Pileus Git - ~andy/linux/blob - drivers/scsi/qla4xxx/ql4_os.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2013 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7 #include <linux/moduleparam.h>
   8 #include <linux/slab.h>
   9 #include <linux/blkdev.h>
  10 #include <linux/iscsi_boot_sysfs.h>
  11 #include <linux/inet.h>
  12
  13 #include <scsi/scsi_tcq.h>
  14 #include <scsi/scsicam.h>
  15
  16 #include "ql4_def.h"
  17 #include "ql4_version.h"
  18 #include "ql4_glbl.h"
  19 #include "ql4_dbg.h"
  20 #include "ql4_inline.h"
  21 #include "ql4_83xx.h"
  22
  23 /*
  24  * Driver version
  25  */
  26 static char qla4xxx_version_str[40];
  27
  28 /*
  29  * SRB allocation cache
  30  */
  31 static struct kmem_cache *srb_cachep;
  32
  33 /*
  34  * Module parameter information and variables
  35  */
  36 static int ql4xdisablesysfsboot = 1;
  37 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
  38 MODULE_PARM_DESC(ql4xdisablesysfsboot,
  39                  " Set to disable exporting boot targets to sysfs.\n"
  40                  "\t\t  0 - Export boot targets\n"
  41                  "\t\t  1 - Do not export boot targets (Default)");
  42
  43 int ql4xdontresethba;
  44 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
  45 MODULE_PARM_DESC(ql4xdontresethba,
  46                  " Don't reset the HBA for driver recovery.\n"
  47                  "\t\t  0 - It will reset HBA (Default)\n"
  48                  "\t\t  1 - It will NOT reset HBA");
  49
  50 int ql4xextended_error_logging;
  51 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
  52 MODULE_PARM_DESC(ql4xextended_error_logging,
  53                  " Option to enable extended error logging.\n"
  54                  "\t\t  0 - no logging (Default)\n"
  55                  "\t\t  2 - debug logging");
  56
  57 int ql4xenablemsix = 1;
  58 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
  59 MODULE_PARM_DESC(ql4xenablemsix,
  60                  " Set to enable MSI or MSI-X interrupt mechanism.\n"
  61                  "\t\t  0 = enable INTx interrupt mechanism.\n"
  62                  "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
  63                  "\t\t  2 = enable MSI interrupt mechanism.");
  64
  65 #define QL4_DEF_QDEPTH 32
  66 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
  67 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
  68 MODULE_PARM_DESC(ql4xmaxqdepth,
  69                  " Maximum queue depth to report for target devices.\n"
  70                  "\t\t  Default: 32.");
  71
  72 static int ql4xqfulltracking = 1;
  73 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
  74 MODULE_PARM_DESC(ql4xqfulltracking,
  75                  " Enable or disable dynamic tracking and adjustment of\n"
  76                  "\t\t scsi device queue depth.\n"
  77                  "\t\t  0 - Disable.\n"
  78                  "\t\t  1 - Enable. (Default)");
  79
  80 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
  81 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
  82 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
  83                 " Target Session Recovery Timeout.\n"
  84                 "\t\t  Default: 120 sec.");
  85
  86 int ql4xmdcapmask = 0x1F;
  87 module_param(ql4xmdcapmask, int, S_IRUGO);
  88 MODULE_PARM_DESC(ql4xmdcapmask,
  89                  " Set the Minidump driver capture mask level.\n"
  90                  "\t\t  Default is 0x1F.\n"
  91                  "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F");
  92
  93 int ql4xenablemd = 1;
  94 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
  95 MODULE_PARM_DESC(ql4xenablemd,
  96                  " Set to enable minidump.\n"
  97                  "\t\t  0 - disable minidump\n"
  98                  "\t\t  1 - enable minidump (Default)");
  99
 100 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
 101 /*
 102  * SCSI host template entry points
 103  */
 104 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
 105
 106 /*
 107  * iSCSI template entry points
 108  */
 109 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
 110                                      enum iscsi_param param, char *buf);
 111 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
 112                                   enum iscsi_param param, char *buf);
 113 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 114                                   enum iscsi_host_param param, char *buf);
 115 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
 116                                    uint32_t len);
 117 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 118                                    enum iscsi_param_type param_type,
 119                                    int param, char *buf);
 120 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
 121 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
 122                                                  struct sockaddr *dst_addr,
 123                                                  int non_blocking);
 124 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
 125 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
 126 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 127                                 enum iscsi_param param, char *buf);
 128 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
 129 static struct iscsi_cls_conn *
 130 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
 131 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
 132                              struct iscsi_cls_conn *cls_conn,
 133                              uint64_t transport_fd, int is_leading);
 134 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
 135 static struct iscsi_cls_session *
 136 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 137                         uint16_t qdepth, uint32_t initial_cmdsn);
 138 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
 139 static void qla4xxx_task_work(struct work_struct *wdata);
 140 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
 141 static int qla4xxx_task_xmit(struct iscsi_task *);
 142 static void qla4xxx_task_cleanup(struct iscsi_task *);
 143 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
 144 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 145                                    struct iscsi_stats *stats);
 146 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 147                              uint32_t iface_type, uint32_t payload_size,
 148                              uint32_t pid, struct sockaddr *dst_addr);
 149 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 150                                  uint32_t *num_entries, char *buf);
 151 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
 152 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
 153                                   int len);
 154 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len);
 155
 156 /*
 157  * SCSI host template entry points
 158  */
 159 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 160 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
 161 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
 162 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
 163 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
 164 static int qla4xxx_slave_alloc(struct scsi_device *device);
 165 static int qla4xxx_slave_configure(struct scsi_device *device);
 166 static void qla4xxx_slave_destroy(struct scsi_device *sdev);
 167 static umode_t qla4_attr_is_visible(int param_type, int param);
 168 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
 169 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
 170                                       int reason);
 171
 172 /*
 173  * iSCSI Flash DDB sysfs entry points
 174  */
 175 static int
 176 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
 177                             struct iscsi_bus_flash_conn *fnode_conn,
 178                             void *data, int len);
 179 static int
 180 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 181                             int param, char *buf);
 182 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
 183                                  int len);
 184 static int
 185 qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
 186 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
 187                                    struct iscsi_bus_flash_conn *fnode_conn);
 188 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 189                                     struct iscsi_bus_flash_conn *fnode_conn);
 190 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
 191
 192 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 193     QLA82XX_LEGACY_INTR_CONFIG;
 194
 195 static struct scsi_host_template qla4xxx_driver_template = {
 196         .module                 = THIS_MODULE,
 197         .name                   = DRIVER_NAME,
 198         .proc_name              = DRIVER_NAME,
 199         .queuecommand           = qla4xxx_queuecommand,
 200
 201         .eh_abort_handler       = qla4xxx_eh_abort,
 202         .eh_device_reset_handler = qla4xxx_eh_device_reset,
 203         .eh_target_reset_handler = qla4xxx_eh_target_reset,
 204         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 205         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 206
 207         .slave_configure        = qla4xxx_slave_configure,
 208         .slave_alloc            = qla4xxx_slave_alloc,
 209         .slave_destroy          = qla4xxx_slave_destroy,
 210         .change_queue_depth     = qla4xxx_change_queue_depth,
 211
 212         .this_id                = -1,
 213         .cmd_per_lun            = 3,
 214         .use_clustering         = ENABLE_CLUSTERING,
 215         .sg_tablesize           = SG_ALL,
 216
 217         .max_sectors            = 0xFFFF,
 218         .shost_attrs            = qla4xxx_host_attrs,
 219         .host_reset             = qla4xxx_host_reset,
 220         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 221 };
 222
 223 static struct iscsi_transport qla4xxx_iscsi_transport = {
 224         .owner                  = THIS_MODULE,
 225         .name                   = DRIVER_NAME,
 226         .caps                   = CAP_TEXT_NEGO |
 227                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 228                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 229                                   CAP_MULTI_R2T,
 230         .attr_is_visible        = qla4_attr_is_visible,
 231         .create_session         = qla4xxx_session_create,
 232         .destroy_session        = qla4xxx_session_destroy,
 233         .start_conn             = qla4xxx_conn_start,
 234         .create_conn            = qla4xxx_conn_create,
 235         .bind_conn              = qla4xxx_conn_bind,
 236         .stop_conn              = iscsi_conn_stop,
 237         .destroy_conn           = qla4xxx_conn_destroy,
 238         .set_param              = iscsi_set_param,
 239         .get_conn_param         = qla4xxx_conn_get_param,
 240         .get_session_param      = qla4xxx_session_get_param,
 241         .get_ep_param           = qla4xxx_get_ep_param,
 242         .ep_connect             = qla4xxx_ep_connect,
 243         .ep_poll                = qla4xxx_ep_poll,
 244         .ep_disconnect          = qla4xxx_ep_disconnect,
 245         .get_stats              = qla4xxx_conn_get_stats,
 246         .send_pdu               = iscsi_conn_send_pdu,
 247         .xmit_task              = qla4xxx_task_xmit,
 248         .cleanup_task           = qla4xxx_task_cleanup,
 249         .alloc_pdu              = qla4xxx_alloc_pdu,
 250
 251         .get_host_param         = qla4xxx_host_get_param,
 252         .set_iface_param        = qla4xxx_iface_set_param,
 253         .get_iface_param        = qla4xxx_get_iface_param,
 254         .bsg_request            = qla4xxx_bsg_request,
 255         .send_ping              = qla4xxx_send_ping,
 256         .get_chap               = qla4xxx_get_chap_list,
 257         .delete_chap            = qla4xxx_delete_chap,
 258         .set_chap               = qla4xxx_set_chap_entry,
 259         .get_flashnode_param    = qla4xxx_sysfs_ddb_get_param,
 260         .set_flashnode_param    = qla4xxx_sysfs_ddb_set_param,
 261         .new_flashnode          = qla4xxx_sysfs_ddb_add,
 262         .del_flashnode          = qla4xxx_sysfs_ddb_delete,
 263         .login_flashnode        = qla4xxx_sysfs_ddb_login,
 264         .logout_flashnode       = qla4xxx_sysfs_ddb_logout,
 265         .logout_flashnode_sid   = qla4xxx_sysfs_ddb_logout_sid,
 266         .get_host_stats         = qla4xxx_get_host_stats,
 267 };
 268
 269 static struct scsi_transport_template *qla4xxx_scsi_transport;
 270
 271 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 272                              uint32_t iface_type, uint32_t payload_size,
 273                              uint32_t pid, struct sockaddr *dst_addr)
 274 {
 275         struct scsi_qla_host *ha = to_qla_host(shost);
 276         struct sockaddr_in *addr;
 277         struct sockaddr_in6 *addr6;
 278         uint32_t options = 0;
 279         uint8_t ipaddr[IPv6_ADDR_LEN];
 280         int rval;
 281
 282         memset(ipaddr, 0, IPv6_ADDR_LEN);
 283         /* IPv4 to IPv4 */
 284         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 285             (dst_addr->sa_family == AF_INET)) {
 286                 addr = (struct sockaddr_in *)dst_addr;
 287                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 288                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 289                                   "dest: %pI4\n", __func__,
 290                                   &ha->ip_config.ip_address, ipaddr));
 291                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 292                                          ipaddr);
 293                 if (rval)
 294                         rval = -EINVAL;
 295         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 296                    (dst_addr->sa_family == AF_INET6)) {
 297                 /* IPv6 to IPv6 */
 298                 addr6 = (struct sockaddr_in6 *)dst_addr;
 299                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 300
 301                 options |= PING_IPV6_PROTOCOL_ENABLE;
 302
 303                 /* Ping using LinkLocal address */
 304                 if ((iface_num == 0) || (iface_num == 1)) {
 305                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 306                                           "src: %pI6 dest: %pI6\n", __func__,
 307                                           &ha->ip_config.ipv6_link_local_addr,
 308                                           ipaddr));
 309                         options |= PING_IPV6_LINKLOCAL_ADDR;
 310                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 311                                                  pid, ipaddr);
 312                 } else {
 313                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 314                                    "not supported\n", __func__, iface_num);
 315                         rval = -ENOSYS;
 316                         goto exit_send_ping;
 317                 }
 318
 319                 /*
 320                  * If ping using LinkLocal address fails, try ping using
 321                  * IPv6 address
 322                  */
 323                 if (rval != QLA_SUCCESS) {
 324                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
 325                         if (iface_num == 0) {
 326                                 options |= PING_IPV6_ADDR0;
 327                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 328                                                   "Ping src: %pI6 "
 329                                                   "dest: %pI6\n", __func__,
 330                                                   &ha->ip_config.ipv6_addr0,
 331                                                   ipaddr));
 332                         } else if (iface_num == 1) {
 333                                 options |= PING_IPV6_ADDR1;
 334                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 335                                                   "Ping src: %pI6 "
 336                                                   "dest: %pI6\n", __func__,
 337                                                   &ha->ip_config.ipv6_addr1,
 338                                                   ipaddr));
 339                         }
 340                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 341                                                  pid, ipaddr);
 342                         if (rval)
 343                                 rval = -EINVAL;
 344                 }
 345         } else
 346                 rval = -ENOSYS;
 347 exit_send_ping:
 348         return rval;
 349 }
 350
 351 static umode_t qla4_attr_is_visible(int param_type, int param)
 352 {
 353         switch (param_type) {
 354         case ISCSI_HOST_PARAM:
 355                 switch (param) {
 356                 case ISCSI_HOST_PARAM_HWADDRESS:
 357                 case ISCSI_HOST_PARAM_IPADDRESS:
 358                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
 359                 case ISCSI_HOST_PARAM_PORT_STATE:
 360                 case ISCSI_HOST_PARAM_PORT_SPEED:
 361                         return S_IRUGO;
 362                 default:
 363                         return 0;
 364                 }
 365         case ISCSI_PARAM:
 366                 switch (param) {
 367                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
 368                 case ISCSI_PARAM_PERSISTENT_PORT:
 369                 case ISCSI_PARAM_CONN_ADDRESS:
 370                 case ISCSI_PARAM_CONN_PORT:
 371                 case ISCSI_PARAM_TARGET_NAME:
 372                 case ISCSI_PARAM_TPGT:
 373                 case ISCSI_PARAM_TARGET_ALIAS:
 374                 case ISCSI_PARAM_MAX_BURST:
 375                 case ISCSI_PARAM_MAX_R2T:
 376                 case ISCSI_PARAM_FIRST_BURST:
 377                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
 378                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 379                 case ISCSI_PARAM_IFACE_NAME:
 380                 case ISCSI_PARAM_CHAP_OUT_IDX:
 381                 case ISCSI_PARAM_CHAP_IN_IDX:
 382                 case ISCSI_PARAM_USERNAME:
 383                 case ISCSI_PARAM_PASSWORD:
 384                 case ISCSI_PARAM_USERNAME_IN:
 385                 case ISCSI_PARAM_PASSWORD_IN:
 386                 case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
 387                 case ISCSI_PARAM_DISCOVERY_SESS:
 388                 case ISCSI_PARAM_PORTAL_TYPE:
 389                 case ISCSI_PARAM_CHAP_AUTH_EN:
 390                 case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
 391                 case ISCSI_PARAM_BIDI_CHAP_EN:
 392                 case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
 393                 case ISCSI_PARAM_DEF_TIME2WAIT:
 394                 case ISCSI_PARAM_DEF_TIME2RETAIN:
 395                 case ISCSI_PARAM_HDRDGST_EN:
 396                 case ISCSI_PARAM_DATADGST_EN:
 397                 case ISCSI_PARAM_INITIAL_R2T_EN:
 398                 case ISCSI_PARAM_IMM_DATA_EN:
 399                 case ISCSI_PARAM_PDU_INORDER_EN:
 400                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
 401                 case ISCSI_PARAM_MAX_SEGMENT_SIZE:
 402                 case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
 403                 case ISCSI_PARAM_TCP_WSF_DISABLE:
 404                 case ISCSI_PARAM_TCP_NAGLE_DISABLE:
 405                 case ISCSI_PARAM_TCP_TIMER_SCALE:
 406                 case ISCSI_PARAM_TCP_TIMESTAMP_EN:
 407                 case ISCSI_PARAM_TCP_XMIT_WSF:
 408                 case ISCSI_PARAM_TCP_RECV_WSF:
 409                 case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
 410                 case ISCSI_PARAM_IPV4_TOS:
 411                 case ISCSI_PARAM_IPV6_TC:
 412                 case ISCSI_PARAM_IPV6_FLOW_LABEL:
 413                 case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
 414                 case ISCSI_PARAM_KEEPALIVE_TMO:
 415                 case ISCSI_PARAM_LOCAL_PORT:
 416                 case ISCSI_PARAM_ISID:
 417                 case ISCSI_PARAM_TSID:
 418                 case ISCSI_PARAM_DEF_TASKMGMT_TMO:
 419                 case ISCSI_PARAM_ERL:
 420                 case ISCSI_PARAM_STATSN:
 421                 case ISCSI_PARAM_EXP_STATSN:
 422                 case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
 423                 case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
 424                 case ISCSI_PARAM_LOCAL_IPADDR:
 425                         return S_IRUGO;
 426                 default:
 427                         return 0;
 428                 }
 429         case ISCSI_NET_PARAM:
 430                 switch (param) {
 431                 case ISCSI_NET_PARAM_IPV4_ADDR:
 432                 case ISCSI_NET_PARAM_IPV4_SUBNET:
 433                 case ISCSI_NET_PARAM_IPV4_GW:
 434                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 435                 case ISCSI_NET_PARAM_IFACE_ENABLE:
 436                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 437                 case ISCSI_NET_PARAM_IPV6_ADDR:
 438                 case ISCSI_NET_PARAM_IPV6_ROUTER:
 439                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 440                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 441                 case ISCSI_NET_PARAM_VLAN_ID:
 442                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
 443                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 444                 case ISCSI_NET_PARAM_MTU:
 445                 case ISCSI_NET_PARAM_PORT:
 446                 case ISCSI_NET_PARAM_IPADDR_STATE:
 447                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
 448                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
 449                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
 450                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
 451                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
 452                 case ISCSI_NET_PARAM_TCP_WSF:
 453                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
 454                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
 455                 case ISCSI_NET_PARAM_CACHE_ID:
 456                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
 457                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
 458                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
 459                 case ISCSI_NET_PARAM_IPV4_TOS:
 460                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
 461                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
 462                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
 463                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
 464                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
 465                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
 466                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
 467                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
 468                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
 469                 case ISCSI_NET_PARAM_REDIRECT_EN:
 470                 case ISCSI_NET_PARAM_IPV4_TTL:
 471                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
 472                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
 473                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
 474                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
 475                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
 476                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
 477                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
 478                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
 479                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
 480                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
 481                         return S_IRUGO;
 482                 default:
 483                         return 0;
 484                 }
 485         case ISCSI_IFACE_PARAM:
 486                 switch (param) {
 487                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
 488                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
 489                 case ISCSI_IFACE_PARAM_DATADGST_EN:
 490                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
 491                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
 492                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
 493                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
 494                 case ISCSI_IFACE_PARAM_ERL:
 495                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
 496                 case ISCSI_IFACE_PARAM_FIRST_BURST:
 497                 case ISCSI_IFACE_PARAM_MAX_R2T:
 498                 case ISCSI_IFACE_PARAM_MAX_BURST:
 499                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
 500                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
 501                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
 502                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
 503                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
 504                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
 505                         return S_IRUGO;
 506                 default:
 507                         return 0;
 508                 }
 509         case ISCSI_FLASHNODE_PARAM:
 510                 switch (param) {
 511                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
 512                 case ISCSI_FLASHNODE_PORTAL_TYPE:
 513                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
 514                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
 515                 case ISCSI_FLASHNODE_ENTRY_EN:
 516                 case ISCSI_FLASHNODE_HDR_DGST_EN:
 517                 case ISCSI_FLASHNODE_DATA_DGST_EN:
 518                 case ISCSI_FLASHNODE_IMM_DATA_EN:
 519                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
 520                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
 521                 case ISCSI_FLASHNODE_PDU_INORDER:
 522                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
 523                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
 524                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
 525                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
 526                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
 527                 case ISCSI_FLASHNODE_ERL:
 528                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
 529                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
 530                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
 531                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
 532                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
 533                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
 534                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
 535                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
 536                 case ISCSI_FLASHNODE_FIRST_BURST:
 537                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
 538                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
 539                 case ISCSI_FLASHNODE_MAX_R2T:
 540                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
 541                 case ISCSI_FLASHNODE_ISID:
 542                 case ISCSI_FLASHNODE_TSID:
 543                 case ISCSI_FLASHNODE_PORT:
 544                 case ISCSI_FLASHNODE_MAX_BURST:
 545                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
 546                 case ISCSI_FLASHNODE_IPADDR:
 547                 case ISCSI_FLASHNODE_ALIAS:
 548                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
 549                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
 550                 case ISCSI_FLASHNODE_LOCAL_PORT:
 551                 case ISCSI_FLASHNODE_IPV4_TOS:
 552                 case ISCSI_FLASHNODE_IPV6_TC:
 553                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
 554                 case ISCSI_FLASHNODE_NAME:
 555                 case ISCSI_FLASHNODE_TPGT:
 556                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
 557                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
 558                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
 559                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
 560                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
 561                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
 562                 case ISCSI_FLASHNODE_USERNAME:
 563                 case ISCSI_FLASHNODE_PASSWORD:
 564                 case ISCSI_FLASHNODE_STATSN:
 565                 case ISCSI_FLASHNODE_EXP_STATSN:
 566                 case ISCSI_FLASHNODE_IS_BOOT_TGT:
 567                         return S_IRUGO;
 568                 default:
 569                         return 0;
 570                 }
 571         }
 572
 573         return 0;
 574 }
 575
 576 /**
 577  * qla4xxx_create chap_list - Create CHAP list from FLASH
 578  * @ha: pointer to adapter structure
 579  *
 580  * Read flash and make a list of CHAP entries, during login when a CHAP entry
 581  * is received, it will be checked in this list. If entry exist then the CHAP
 582  * entry index is set in the DDB. If CHAP entry does not exist in this list
 583  * then a new entry is added in FLASH in CHAP table and the index obtained is
 584  * used in the DDB.
 585  **/
 586 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
 587 {
 588         int rval = 0;
 589         uint8_t *chap_flash_data = NULL;
 590         uint32_t offset;
 591         dma_addr_t chap_dma;
 592         uint32_t chap_size = 0;
 593
 594         if (is_qla40XX(ha))
 595                 chap_size = MAX_CHAP_ENTRIES_40XX *
 596                             sizeof(struct ql4_chap_table);
 597         else    /* Single region contains CHAP info for both
 598                  * ports which is divided into half for each port.
 599                  */
 600                 chap_size = ha->hw.flt_chap_size / 2;
 601
 602         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
 603                                              &chap_dma, GFP_KERNEL);
 604         if (!chap_flash_data) {
 605                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
 606                 return;
 607         }
 608
 609         if (is_qla40XX(ha)) {
 610                 offset = FLASH_CHAP_OFFSET;
 611         } else {
 612                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 613                 if (ha->port_num == 1)
 614                         offset += chap_size;
 615         }
 616
 617         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 618         if (rval != QLA_SUCCESS)
 619                 goto exit_chap_list;
 620
 621         if (ha->chap_list == NULL)
 622                 ha->chap_list = vmalloc(chap_size);
 623         if (ha->chap_list == NULL) {
 624                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
 625                 goto exit_chap_list;
 626         }
 627
 628         memset(ha->chap_list, 0, chap_size);
 629         memcpy(ha->chap_list, chap_flash_data, chap_size);
 630
 631 exit_chap_list:
 632         dma_free_coherent(&ha->pdev->dev, chap_size, chap_flash_data, chap_dma);
 633 }
 634
 635 static int qla4xxx_get_chap_by_index(struct scsi_qla_host *ha,
 636                                      int16_t chap_index,
 637                                      struct ql4_chap_table **chap_entry)
 638 {
 639         int rval = QLA_ERROR;
 640         int max_chap_entries;
 641
 642         if (!ha->chap_list) {
 643                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 644                 rval = QLA_ERROR;
 645                 goto exit_get_chap;
 646         }
 647
 648         if (is_qla80XX(ha))
 649                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 650                                    sizeof(struct ql4_chap_table);
 651         else
 652                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 653
 654         if (chap_index > max_chap_entries) {
 655                 ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
 656                 rval = QLA_ERROR;
 657                 goto exit_get_chap;
 658         }
 659
 660         *chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
 661         if ((*chap_entry)->cookie !=
 662              __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
 663                 rval = QLA_ERROR;
 664                 *chap_entry = NULL;
 665         } else {
 666                 rval = QLA_SUCCESS;
 667         }
 668
 669 exit_get_chap:
 670         return rval;
 671 }
 672
 673 /**
 674  * qla4xxx_find_free_chap_index - Find the first free chap index
 675  * @ha: pointer to adapter structure
 676  * @chap_index: CHAP index to be returned
 677  *
 678  * Find the first free chap index available in the chap table
 679  *
 680  * Note: Caller should acquire the chap lock before getting here.
 681  **/
 682 static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
 683                                         uint16_t *chap_index)
 684 {
 685         int i, rval;
 686         int free_index = -1;
 687         int max_chap_entries = 0;
 688         struct ql4_chap_table *chap_table;
 689
 690         if (is_qla80XX(ha))
 691                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 692                                                 sizeof(struct ql4_chap_table);
 693         else
 694                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 695
 696         if (!ha->chap_list) {
 697                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 698                 rval = QLA_ERROR;
 699                 goto exit_find_chap;
 700         }
 701
 702         for (i = 0; i < max_chap_entries; i++) {
 703                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 704
 705                 if ((chap_table->cookie !=
 706                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) &&
 707                    (i > MAX_RESRV_CHAP_IDX)) {
 708                                 free_index = i;
 709                                 break;
 710                 }
 711         }
 712
 713         if (free_index != -1) {
 714                 *chap_index = free_index;
 715                 rval = QLA_SUCCESS;
 716         } else {
 717                 rval = QLA_ERROR;
 718         }
 719
 720 exit_find_chap:
 721         return rval;
 722 }
 723
 724 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 725                                   uint32_t *num_entries, char *buf)
 726 {
 727         struct scsi_qla_host *ha = to_qla_host(shost);
 728         struct ql4_chap_table *chap_table;
 729         struct iscsi_chap_rec *chap_rec;
 730         int max_chap_entries = 0;
 731         int valid_chap_entries = 0;
 732         int ret = 0, i;
 733
 734         if (is_qla80XX(ha))
 735                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 736                                         sizeof(struct ql4_chap_table);
 737         else
 738                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 739
 740         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 741                         __func__, *num_entries, chap_tbl_idx);
 742
 743         if (!buf) {
 744                 ret = -ENOMEM;
 745                 goto exit_get_chap_list;
 746         }
 747
 748         qla4xxx_create_chap_list(ha);
 749
 750         chap_rec = (struct iscsi_chap_rec *) buf;
 751         mutex_lock(&ha->chap_sem);
 752         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 753                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 754                 if (chap_table->cookie !=
 755                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 756                         continue;
 757
 758                 chap_rec->chap_tbl_idx = i;
 759                 strncpy(chap_rec->username, chap_table->name,
 760                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 761                 strncpy(chap_rec->password, chap_table->secret,
 762                         QL4_CHAP_MAX_SECRET_LEN);
 763                 chap_rec->password_length = chap_table->secret_len;
 764
 765                 if (chap_table->flags & BIT_7) /* local */
 766                         chap_rec->chap_type = CHAP_TYPE_OUT;
 767
 768                 if (chap_table->flags & BIT_6) /* peer */
 769                         chap_rec->chap_type = CHAP_TYPE_IN;
 770
 771                 chap_rec++;
 772
 773                 valid_chap_entries++;
 774                 if (valid_chap_entries == *num_entries)
 775                         break;
 776                 else
 777                         continue;
 778         }
 779         mutex_unlock(&ha->chap_sem);
 780
 781 exit_get_chap_list:
 782         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 783                         __func__,  valid_chap_entries);
 784         *num_entries = valid_chap_entries;
 785         return ret;
 786 }
 787
 788 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 789 {
 790         int ret = 0;
 791         uint16_t *chap_tbl_idx = (uint16_t *) data;
 792         struct iscsi_cls_session *cls_session;
 793         struct iscsi_session *sess;
 794         struct ddb_entry *ddb_entry;
 795
 796         if (!iscsi_is_session_dev(dev))
 797                 goto exit_is_chap_active;
 798
 799         cls_session = iscsi_dev_to_session(dev);
 800         sess = cls_session->dd_data;
 801         ddb_entry = sess->dd_data;
 802
 803         if (iscsi_session_chkready(cls_session))
 804                 goto exit_is_chap_active;
 805
 806         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 807                 ret = 1;
 808
 809 exit_is_chap_active:
 810         return ret;
 811 }
 812
 813 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 814                                   uint16_t chap_tbl_idx)
 815 {
 816         int ret = 0;
 817
 818         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 819                                     __qla4xxx_is_chap_active);
 820
 821         return ret;
 822 }
 823
 824 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 825 {
 826         struct scsi_qla_host *ha = to_qla_host(shost);
 827         struct ql4_chap_table *chap_table;
 828         dma_addr_t chap_dma;
 829         int max_chap_entries = 0;
 830         uint32_t offset = 0;
 831         uint32_t chap_size;
 832         int ret = 0;
 833
 834         chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 835         if (chap_table == NULL)
 836                 return -ENOMEM;
 837
 838         memset(chap_table, 0, sizeof(struct ql4_chap_table));
 839
 840         if (is_qla80XX(ha))
 841                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 842                                    sizeof(struct ql4_chap_table);
 843         else
 844                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 845
 846         if (chap_tbl_idx > max_chap_entries) {
 847                 ret = -EINVAL;
 848                 goto exit_delete_chap;
 849         }
 850
 851         /* Check if chap index is in use.
 852          * If chap is in use don't delet chap entry */
 853         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 854         if (ret) {
 855                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 856                            "delete from flash\n", chap_tbl_idx);
 857                 ret = -EBUSY;
 858                 goto exit_delete_chap;
 859         }
 860
 861         chap_size = sizeof(struct ql4_chap_table);
 862         if (is_qla40XX(ha))
 863                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 864         else {
 865                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 866                 /* flt_chap_size is CHAP table size for both ports
 867                  * so divide it by 2 to calculate the offset for second port
 868                  */
 869                 if (ha->port_num == 1)
 870                         offset += (ha->hw.flt_chap_size / 2);
 871                 offset += (chap_tbl_idx * chap_size);
 872         }
 873
 874         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 875         if (ret != QLA_SUCCESS) {
 876                 ret = -EINVAL;
 877                 goto exit_delete_chap;
 878         }
 879
 880         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 881                           __le16_to_cpu(chap_table->cookie)));
 882
 883         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 884                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 885                 goto exit_delete_chap;
 886         }
 887
 888         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 889
 890         offset = FLASH_CHAP_OFFSET |
 891                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 892         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 893                                 FLASH_OPT_RMW_COMMIT);
 894         if (ret == QLA_SUCCESS && ha->chap_list) {
 895                 mutex_lock(&ha->chap_sem);
 896                 /* Update ha chap_list cache */
 897                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 898                         chap_table, sizeof(struct ql4_chap_table));
 899                 mutex_unlock(&ha->chap_sem);
 900         }
 901         if (ret != QLA_SUCCESS)
 902                 ret =  -EINVAL;
 903
 904 exit_delete_chap:
 905         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 906         return ret;
 907 }
 908
 909 /**
 910  * qla4xxx_set_chap_entry - Make chap entry with given information
 911  * @shost: pointer to host
 912  * @data: chap info - credentials, index and type to make chap entry
 913  * @len: length of data
 914  *
 915  * Add or update chap entry with the given information
 916  **/
 917 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
 918 {
 919         struct scsi_qla_host *ha = to_qla_host(shost);
 920         struct iscsi_chap_rec chap_rec;
 921         struct ql4_chap_table *chap_entry = NULL;
 922         struct iscsi_param_info *param_info;
 923         struct nlattr *attr;
 924         int max_chap_entries = 0;
 925         int type;
 926         int rem = len;
 927         int rc = 0;
 928         int size;
 929
 930         memset(&chap_rec, 0, sizeof(chap_rec));
 931
 932         nla_for_each_attr(attr, data, len, rem) {
 933                 param_info = nla_data(attr);
 934
 935                 switch (param_info->param) {
 936                 case ISCSI_CHAP_PARAM_INDEX:
 937                         chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
 938                         break;
 939                 case ISCSI_CHAP_PARAM_CHAP_TYPE:
 940                         chap_rec.chap_type = param_info->value[0];
 941                         break;
 942                 case ISCSI_CHAP_PARAM_USERNAME:
 943                         size = min_t(size_t, sizeof(chap_rec.username),
 944                                      param_info->len);
 945                         memcpy(chap_rec.username, param_info->value, size);
 946                         break;
 947                 case ISCSI_CHAP_PARAM_PASSWORD:
 948                         size = min_t(size_t, sizeof(chap_rec.password),
 949                                      param_info->len);
 950                         memcpy(chap_rec.password, param_info->value, size);
 951                         break;
 952                 case ISCSI_CHAP_PARAM_PASSWORD_LEN:
 953                         chap_rec.password_length = param_info->value[0];
 954                         break;
 955                 default:
 956                         ql4_printk(KERN_ERR, ha,
 957                                    "%s: No such sysfs attribute\n", __func__);
 958                         rc = -ENOSYS;
 959                         goto exit_set_chap;
 960                 };
 961         }
 962
 963         if (chap_rec.chap_type == CHAP_TYPE_IN)
 964                 type = BIDI_CHAP;
 965         else
 966                 type = LOCAL_CHAP;
 967
 968         if (is_qla80XX(ha))
 969                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 970                                    sizeof(struct ql4_chap_table);
 971         else
 972                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 973
 974         mutex_lock(&ha->chap_sem);
 975         if (chap_rec.chap_tbl_idx < max_chap_entries) {
 976                 rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
 977                                                &chap_entry);
 978                 if (!rc) {
 979                         if (!(type == qla4xxx_get_chap_type(chap_entry))) {
 980                                 ql4_printk(KERN_INFO, ha,
 981                                            "Type mismatch for CHAP entry %d\n",
 982                                            chap_rec.chap_tbl_idx);
 983                                 rc = -EINVAL;
 984                                 goto exit_unlock_chap;
 985                         }
 986
 987                         /* If chap index is in use then don't modify it */
 988                         rc = qla4xxx_is_chap_active(shost,
 989                                                     chap_rec.chap_tbl_idx);
 990                         if (rc) {
 991                                 ql4_printk(KERN_INFO, ha,
 992                                            "CHAP entry %d is in use\n",
 993                                            chap_rec.chap_tbl_idx);
 994                                 rc = -EBUSY;
 995                                 goto exit_unlock_chap;
 996                         }
 997                 }
 998         } else {
 999                 rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
1000                 if (rc) {
1001                         ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
1002                         rc = -EBUSY;
1003                         goto exit_unlock_chap;
1004                 }
1005         }
1006
1007         rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
1008                               chap_rec.chap_tbl_idx, type);
1009
1010 exit_unlock_chap:
1011         mutex_unlock(&ha->chap_sem);
1012
1013 exit_set_chap:
1014         return rc;
1015 }
1016
1017
1018 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
1019 {
1020         struct scsi_qla_host *ha = to_qla_host(shost);
1021         struct iscsi_offload_host_stats *host_stats = NULL;
1022         int host_stats_size;
1023         int ret = 0;
1024         int ddb_idx = 0;
1025         struct ql_iscsi_stats *ql_iscsi_stats = NULL;
1026         int stats_size;
1027         dma_addr_t iscsi_stats_dma;
1028
1029         DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));
1030
1031         host_stats_size = sizeof(struct iscsi_offload_host_stats);
1032
1033         if (host_stats_size != len) {
1034                 ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
1035                            __func__, len, host_stats_size);
1036                 ret = -EINVAL;
1037                 goto exit_host_stats;
1038         }
1039         host_stats = (struct iscsi_offload_host_stats *)buf;
1040
1041         if (!buf) {
1042                 ret = -ENOMEM;
1043                 goto exit_host_stats;
1044         }
1045
1046         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1047
1048         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1049                                             &iscsi_stats_dma, GFP_KERNEL);
1050         if (!ql_iscsi_stats) {
1051                 ql4_printk(KERN_ERR, ha,
1052                            "Unable to allocate memory for iscsi stats\n");
1053                 goto exit_host_stats;
1054         }
1055
1056         ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
1057                                      iscsi_stats_dma);
1058         if (ret != QLA_SUCCESS) {
1059                 ql4_printk(KERN_ERR, ha,
1060                            "Unable to retrieve iscsi stats\n");
1061                 goto exit_host_stats;
1062         }
1063         host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
1064         host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
1065         host_stats->mactx_multicast_frames =
1066                         le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
1067         host_stats->mactx_broadcast_frames =
1068                         le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
1069         host_stats->mactx_pause_frames =
1070                         le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
1071         host_stats->mactx_control_frames =
1072                         le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
1073         host_stats->mactx_deferral =
1074                         le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
1075         host_stats->mactx_excess_deferral =
1076                         le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
1077         host_stats->mactx_late_collision =
1078                         le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
1079         host_stats->mactx_abort = le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
1080         host_stats->mactx_single_collision =
1081                         le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
1082         host_stats->mactx_multiple_collision =
1083                         le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
1084         host_stats->mactx_collision =
1085                         le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
1086         host_stats->mactx_frames_dropped =
1087                         le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
1088         host_stats->mactx_jumbo_frames =
1089                         le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
1090         host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
1091         host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
1092         host_stats->macrx_unknown_control_frames =
1093                 le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
1094         host_stats->macrx_pause_frames =
1095                         le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
1096         host_stats->macrx_control_frames =
1097                         le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
1098         host_stats->macrx_dribble =
1099                         le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
1100         host_stats->macrx_frame_length_error =
1101                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
1102         host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
1103         host_stats->macrx_carrier_sense_error =
1104                 le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
1105         host_stats->macrx_frame_discarded =
1106                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
1107         host_stats->macrx_frames_dropped =
1108                         le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
1109         host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
1110         host_stats->mac_encoding_error =
1111                         le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
1112         host_stats->macrx_length_error_large =
1113                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
1114         host_stats->macrx_length_error_small =
1115                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
1116         host_stats->macrx_multicast_frames =
1117                         le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
1118         host_stats->macrx_broadcast_frames =
1119                         le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
1120         host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
1121         host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
1122         host_stats->iptx_fragments =
1123                         le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
1124         host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
1125         host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
1126         host_stats->iprx_fragments =
1127                         le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
1128         host_stats->ip_datagram_reassembly =
1129                         le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
1130         host_stats->ip_invalid_address_error =
1131                         le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
1132         host_stats->ip_error_packets =
1133                         le64_to_cpu(ql_iscsi_stats->ip_error_packets);
1134         host_stats->ip_fragrx_overlap =
1135                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
1136         host_stats->ip_fragrx_outoforder =
1137                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
1138         host_stats->ip_datagram_reassembly_timeout =
1139                 le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
1140         host_stats->ipv6tx_packets =
1141                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
1142         host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
1143         host_stats->ipv6tx_fragments =
1144                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
1145         host_stats->ipv6rx_packets =
1146                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
1147         host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
1148         host_stats->ipv6rx_fragments =
1149                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
1150         host_stats->ipv6_datagram_reassembly =
1151                         le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
1152         host_stats->ipv6_invalid_address_error =
1153                 le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
1154         host_stats->ipv6_error_packets =
1155                         le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
1156         host_stats->ipv6_fragrx_overlap =
1157                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
1158         host_stats->ipv6_fragrx_outoforder =
1159                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
1160         host_stats->ipv6_datagram_reassembly_timeout =
1161                 le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
1162         host_stats->tcptx_segments =
1163                         le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
1164         host_stats->tcptx_bytes = le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
1165         host_stats->tcprx_segments =
1166                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
1167         host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
1168         host_stats->tcp_duplicate_ack_retx =
1169                         le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
1170         host_stats->tcp_retx_timer_expired =
1171                         le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
1172         host_stats->tcprx_duplicate_ack =
1173                         le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
1174         host_stats->tcprx_pure_ackr =
1175                         le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
1176         host_stats->tcptx_delayed_ack =
1177                         le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
1178         host_stats->tcptx_pure_ack =
1179                         le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
1180         host_stats->tcprx_segment_error =
1181                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
1182         host_stats->tcprx_segment_outoforder =
1183                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
1184         host_stats->tcprx_window_probe =
1185                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
1186         host_stats->tcprx_window_update =
1187                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
1188         host_stats->tcptx_window_probe_persist =
1189                 le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
1190         host_stats->ecc_error_correction =
1191                         le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
1192         host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
1193         host_stats->iscsi_data_bytes_tx =
1194                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
1195         host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
1196         host_stats->iscsi_data_bytes_rx =
1197                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
1198         host_stats->iscsi_io_completed =
1199                         le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
1200         host_stats->iscsi_unexpected_io_rx =
1201                         le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
1202         host_stats->iscsi_format_error =
1203                         le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
1204         host_stats->iscsi_hdr_digest_error =
1205                         le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
1206         host_stats->iscsi_data_digest_error =
1207                         le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
1208         host_stats->iscsi_sequence_error =
1209                         le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
1210 exit_host_stats:
1211         if (ql_iscsi_stats)
1212                 dma_free_coherent(&ha->pdev->dev, host_stats_size,
1213                                   ql_iscsi_stats, iscsi_stats_dma);
1214
1215         ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
1216                    __func__);
1217         return ret;
1218 }
1219
1220 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
1221                                    enum iscsi_param_type param_type,
1222                                    int param, char *buf)
1223 {
1224         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
1225         struct scsi_qla_host *ha = to_qla_host(shost);
1226         int ival;
1227         char *pval = NULL;
1228         int len = -ENOSYS;
1229
1230         if (param_type == ISCSI_NET_PARAM) {
1231                 switch (param) {
1232                 case ISCSI_NET_PARAM_IPV4_ADDR:
1233                         len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1234                         break;
1235                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1236                         len = sprintf(buf, "%pI4\n",
1237                                       &ha->ip_config.subnet_mask);
1238                         break;
1239                 case ISCSI_NET_PARAM_IPV4_GW:
1240                         len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
1241                         break;
1242                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1243                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1244                                 OP_STATE(ha->ip_config.ipv4_options,
1245                                          IPOPT_IPV4_PROTOCOL_ENABLE, pval);
1246                         } else {
1247                                 OP_STATE(ha->ip_config.ipv6_options,
1248                                          IPV6_OPT_IPV6_PROTOCOL_ENABLE, pval);
1249                         }
1250
1251                         len = sprintf(buf, "%s\n", pval);
1252                         break;
1253                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1254                         len = sprintf(buf, "%s\n",
1255                                       (ha->ip_config.tcp_options &
1256                                        TCPOPT_DHCP_ENABLE) ?
1257                                       "dhcp" : "static");
1258                         break;
1259                 case ISCSI_NET_PARAM_IPV6_ADDR:
1260                         if (iface->iface_num == 0)
1261                                 len = sprintf(buf, "%pI6\n",
1262                                               &ha->ip_config.ipv6_addr0);
1263                         if (iface->iface_num == 1)
1264                                 len = sprintf(buf, "%pI6\n",
1265                                               &ha->ip_config.ipv6_addr1);
1266                         break;
1267                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1268                         len = sprintf(buf, "%pI6\n",
1269                                       &ha->ip_config.ipv6_link_local_addr);
1270                         break;
1271                 case ISCSI_NET_PARAM_IPV6_ROUTER:
1272                         len = sprintf(buf, "%pI6\n",
1273                                       &ha->ip_config.ipv6_default_router_addr);
1274                         break;
1275                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1276                         pval = (ha->ip_config.ipv6_addl_options &
1277                                 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
1278                                 "nd" : "static";
1279
1280                         len = sprintf(buf, "%s\n", pval);
1281                         break;
1282                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1283                         pval = (ha->ip_config.ipv6_addl_options &
1284                                 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
1285                                 "auto" : "static";
1286
1287                         len = sprintf(buf, "%s\n", pval);
1288                         break;
1289                 case ISCSI_NET_PARAM_VLAN_ID:
1290                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1291                                 ival = ha->ip_config.ipv4_vlan_tag &
1292                                        ISCSI_MAX_VLAN_ID;
1293                         else
1294                                 ival = ha->ip_config.ipv6_vlan_tag &
1295                                        ISCSI_MAX_VLAN_ID;
1296
1297                         len = sprintf(buf, "%d\n", ival);
1298                         break;
1299                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1300                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1301                                 ival = (ha->ip_config.ipv4_vlan_tag >> 13) &
1302                                        ISCSI_MAX_VLAN_PRIORITY;
1303                         else
1304                                 ival = (ha->ip_config.ipv6_vlan_tag >> 13) &
1305                                        ISCSI_MAX_VLAN_PRIORITY;
1306
1307                         len = sprintf(buf, "%d\n", ival);
1308                         break;
1309                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1310                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1311                                 OP_STATE(ha->ip_config.ipv4_options,
1312                                          IPOPT_VLAN_TAGGING_ENABLE, pval);
1313                         } else {
1314                                 OP_STATE(ha->ip_config.ipv6_options,
1315                                          IPV6_OPT_VLAN_TAGGING_ENABLE, pval);
1316                         }
1317                         len = sprintf(buf, "%s\n", pval);
1318                         break;
1319                 case ISCSI_NET_PARAM_MTU:
1320                         len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
1321                         break;
1322                 case ISCSI_NET_PARAM_PORT:
1323                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1324                                 len = sprintf(buf, "%d\n",
1325                                               ha->ip_config.ipv4_port);
1326                         else
1327                                 len = sprintf(buf, "%d\n",
1328                                               ha->ip_config.ipv6_port);
1329                         break;
1330                 case ISCSI_NET_PARAM_IPADDR_STATE:
1331                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1332                                 pval = iscsi_get_ipaddress_state_name(
1333                                                 ha->ip_config.ipv4_addr_state);
1334                         } else {
1335                                 if (iface->iface_num == 0)
1336                                         pval = iscsi_get_ipaddress_state_name(
1337                                                 ha->ip_config.ipv6_addr0_state);
1338                                 else if (iface->iface_num == 1)
1339                                         pval = iscsi_get_ipaddress_state_name(
1340                                                 ha->ip_config.ipv6_addr1_state);
1341                         }
1342
1343                         len = sprintf(buf, "%s\n", pval);
1344                         break;
1345                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
1346                         pval = iscsi_get_ipaddress_state_name(
1347                                         ha->ip_config.ipv6_link_local_state);
1348                         len = sprintf(buf, "%s\n", pval);
1349                         break;
1350                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
1351                         pval = iscsi_get_router_state_name(
1352                                       ha->ip_config.ipv6_default_router_state);
1353                         len = sprintf(buf, "%s\n", pval);
1354                         break;
1355                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
1356                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1357                                 OP_STATE(~ha->ip_config.tcp_options,
1358                                          TCPOPT_DELAYED_ACK_DISABLE, pval);
1359                         } else {
1360                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1361                                          IPV6_TCPOPT_DELAYED_ACK_DISABLE, pval);
1362                         }
1363                         len = sprintf(buf, "%s\n", pval);
1364                         break;
1365                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
1366                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1367                                 OP_STATE(~ha->ip_config.tcp_options,
1368                                          TCPOPT_NAGLE_ALGO_DISABLE, pval);
1369                         } else {
1370                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1371                                          IPV6_TCPOPT_NAGLE_ALGO_DISABLE, pval);
1372                         }
1373                         len = sprintf(buf, "%s\n", pval);
1374                         break;
1375                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
1376                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1377                                 OP_STATE(~ha->ip_config.tcp_options,
1378                                          TCPOPT_WINDOW_SCALE_DISABLE, pval);
1379                         } else {
1380                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1381                                          IPV6_TCPOPT_WINDOW_SCALE_DISABLE,
1382                                          pval);
1383                         }
1384                         len = sprintf(buf, "%s\n", pval);
1385                         break;
1386                 case ISCSI_NET_PARAM_TCP_WSF:
1387                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1388                                 len = sprintf(buf, "%d\n",
1389                                               ha->ip_config.tcp_wsf);
1390                         else
1391                                 len = sprintf(buf, "%d\n",
1392                                               ha->ip_config.ipv6_tcp_wsf);
1393                         break;
1394                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
1395                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1396                                 ival = (ha->ip_config.tcp_options &
1397                                         TCPOPT_TIMER_SCALE) >> 1;
1398                         else
1399                                 ival = (ha->ip_config.ipv6_tcp_options &
1400                                         IPV6_TCPOPT_TIMER_SCALE) >> 1;
1401
1402                         len = sprintf(buf, "%d\n", ival);
1403                         break;
1404                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
1405                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1406                                 OP_STATE(ha->ip_config.tcp_options,
1407                                          TCPOPT_TIMESTAMP_ENABLE, pval);
1408                         } else {
1409                                 OP_STATE(ha->ip_config.ipv6_tcp_options,
1410                                          IPV6_TCPOPT_TIMESTAMP_EN, pval);
1411                         }
1412                         len = sprintf(buf, "%s\n", pval);
1413                         break;
1414                 case ISCSI_NET_PARAM_CACHE_ID:
1415                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1416                                 len = sprintf(buf, "%d\n",
1417                                               ha->ip_config.ipv4_cache_id);
1418                         else
1419                                 len = sprintf(buf, "%d\n",
1420                                               ha->ip_config.ipv6_cache_id);
1421                         break;
1422                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
1423                         OP_STATE(ha->ip_config.tcp_options,
1424                                  TCPOPT_DNS_SERVER_IP_EN, pval);
1425
1426                         len = sprintf(buf, "%s\n", pval);
1427                         break;
1428                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
1429                         OP_STATE(ha->ip_config.tcp_options,
1430                                  TCPOPT_SLP_DA_INFO_EN, pval);
1431
1432                         len = sprintf(buf, "%s\n", pval);
1433                         break;
1434                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
1435                         OP_STATE(ha->ip_config.ipv4_options,
1436                                  IPOPT_IPV4_TOS_EN, pval);
1437
1438                         len = sprintf(buf, "%s\n", pval);
1439                         break;
1440                 case ISCSI_NET_PARAM_IPV4_TOS:
1441                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_tos);
1442                         break;
1443                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
1444                         OP_STATE(ha->ip_config.ipv4_options,
1445                                  IPOPT_GRAT_ARP_EN, pval);
1446
1447                         len = sprintf(buf, "%s\n", pval);
1448                         break;
1449                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
1450                         OP_STATE(ha->ip_config.ipv4_options, IPOPT_ALT_CID_EN,
1451                                  pval);
1452
1453                         len = sprintf(buf, "%s\n", pval);
1454                         break;
1455                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
1456                         pval = (ha->ip_config.ipv4_alt_cid_len) ?
1457                                (char *)ha->ip_config.ipv4_alt_cid : "";
1458
1459                         len = sprintf(buf, "%s\n", pval);
1460                         break;
1461                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
1462                         OP_STATE(ha->ip_config.ipv4_options,
1463                                  IPOPT_REQ_VID_EN, pval);
1464
1465                         len = sprintf(buf, "%s\n", pval);
1466                         break;
1467                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
1468                         OP_STATE(ha->ip_config.ipv4_options,
1469                                  IPOPT_USE_VID_EN, pval);
1470
1471                         len = sprintf(buf, "%s\n", pval);
1472                         break;
1473                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
1474                         pval = (ha->ip_config.ipv4_vid_len) ?
1475                                (char *)ha->ip_config.ipv4_vid : "";
1476
1477                         len = sprintf(buf, "%s\n", pval);
1478                         break;
1479                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
1480                         OP_STATE(ha->ip_config.ipv4_options,
1481                                  IPOPT_LEARN_IQN_EN, pval);
1482
1483                         len = sprintf(buf, "%s\n", pval);
1484                         break;
1485                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
1486                         OP_STATE(~ha->ip_config.ipv4_options,
1487                                  IPOPT_FRAGMENTATION_DISABLE, pval);
1488
1489                         len = sprintf(buf, "%s\n", pval);
1490                         break;
1491                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
1492                         OP_STATE(ha->ip_config.ipv4_options,
1493                                  IPOPT_IN_FORWARD_EN, pval);
1494
1495                         len = sprintf(buf, "%s\n", pval);
1496                         break;
1497                 case ISCSI_NET_PARAM_REDIRECT_EN:
1498                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1499                                 OP_STATE(ha->ip_config.ipv4_options,
1500                                          IPOPT_ARP_REDIRECT_EN, pval);
1501                         } else {
1502                                 OP_STATE(ha->ip_config.ipv6_options,
1503                                          IPV6_OPT_REDIRECT_EN, pval);
1504                         }
1505                         len = sprintf(buf, "%s\n", pval);
1506                         break;
1507                 case ISCSI_NET_PARAM_IPV4_TTL:
1508                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_ttl);
1509                         break;
1510                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
1511                         OP_STATE(ha->ip_config.ipv6_options,
1512                                  IPV6_OPT_GRAT_NEIGHBOR_ADV_EN, pval);
1513
1514                         len = sprintf(buf, "%s\n", pval);
1515                         break;
1516                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
1517                         OP_STATE(ha->ip_config.ipv6_addl_options,
1518                                  IPV6_ADDOPT_MLD_EN, pval);
1519
1520                         len = sprintf(buf, "%s\n", pval);
1521                         break;
1522                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
1523                         len = sprintf(buf, "%u\n", ha->ip_config.ipv6_flow_lbl);
1524                         break;
1525                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
1526                         len = sprintf(buf, "%d\n",
1527                                       ha->ip_config.ipv6_traffic_class);
1528                         break;
1529                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
1530                         len = sprintf(buf, "%d\n",
1531                                       ha->ip_config.ipv6_hop_limit);
1532                         break;
1533                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
1534                         len = sprintf(buf, "%d\n",
1535                                       ha->ip_config.ipv6_nd_reach_time);
1536                         break;
1537                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
1538                         len = sprintf(buf, "%d\n",
1539                                       ha->ip_config.ipv6_nd_rexmit_timer);
1540                         break;
1541                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
1542                         len = sprintf(buf, "%d\n",
1543                                       ha->ip_config.ipv6_nd_stale_timeout);
1544                         break;
1545                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
1546                         len = sprintf(buf, "%d\n",
1547                                       ha->ip_config.ipv6_dup_addr_detect_count);
1548                         break;
1549                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
1550                         len = sprintf(buf, "%d\n",
1551                                       ha->ip_config.ipv6_gw_advrt_mtu);
1552                         break;
1553                 default:
1554                         len = -ENOSYS;
1555                 }
1556         } else if (param_type == ISCSI_IFACE_PARAM) {
1557                 switch (param) {
1558                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
1559                         len = sprintf(buf, "%d\n", ha->ip_config.def_timeout);
1560                         break;
1561                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
1562                         OP_STATE(ha->ip_config.iscsi_options,
1563                                  ISCSIOPTS_HEADER_DIGEST_EN, pval);
1564
1565                         len = sprintf(buf, "%s\n", pval);
1566                         break;
1567                 case ISCSI_IFACE_PARAM_DATADGST_EN:
1568                         OP_STATE(ha->ip_config.iscsi_options,
1569                                  ISCSIOPTS_DATA_DIGEST_EN, pval);
1570
1571                         len = sprintf(buf, "%s\n", pval);
1572                         break;
1573                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
1574                         OP_STATE(ha->ip_config.iscsi_options,
1575                                  ISCSIOPTS_IMMEDIATE_DATA_EN, pval);
1576
1577                         len = sprintf(buf, "%s\n", pval);
1578                         break;
1579                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
1580                         OP_STATE(ha->ip_config.iscsi_options,
1581                                  ISCSIOPTS_INITIAL_R2T_EN, pval);
1582
1583                         len = sprintf(buf, "%s\n", pval);
1584                         break;
1585                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
1586                         OP_STATE(ha->ip_config.iscsi_options,
1587                                  ISCSIOPTS_DATA_SEQ_INORDER_EN, pval);
1588
1589                         len = sprintf(buf, "%s\n", pval);
1590                         break;
1591                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
1592                         OP_STATE(ha->ip_config.iscsi_options,
1593                                  ISCSIOPTS_DATA_PDU_INORDER_EN, pval);
1594
1595                         len = sprintf(buf, "%s\n", pval);
1596                         break;
1597                 case ISCSI_IFACE_PARAM_ERL:
1598                         len = sprintf(buf, "%d\n",
1599                                       (ha->ip_config.iscsi_options &
1600                                        ISCSIOPTS_ERL));
1601                         break;
1602                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
1603                         len = sprintf(buf, "%u\n",
1604                                       ha->ip_config.iscsi_max_pdu_size *
1605                                       BYTE_UNITS);
1606                         break;
1607                 case ISCSI_IFACE_PARAM_FIRST_BURST:
1608                         len = sprintf(buf, "%u\n",
1609                                       ha->ip_config.iscsi_first_burst_len *
1610                                       BYTE_UNITS);
1611                         break;
1612                 case ISCSI_IFACE_PARAM_MAX_R2T:
1613                         len = sprintf(buf, "%d\n",
1614                                       ha->ip_config.iscsi_max_outstnd_r2t);
1615                         break;
1616                 case ISCSI_IFACE_PARAM_MAX_BURST:
1617                         len = sprintf(buf, "%u\n",
1618                                       ha->ip_config.iscsi_max_burst_len *
1619                                       BYTE_UNITS);
1620                         break;
1621                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
1622                         OP_STATE(ha->ip_config.iscsi_options,
1623                                  ISCSIOPTS_CHAP_AUTH_EN, pval);
1624
1625                         len = sprintf(buf, "%s\n", pval);
1626                         break;
1627                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
1628                         OP_STATE(ha->ip_config.iscsi_options,
1629                                  ISCSIOPTS_BIDI_CHAP_EN, pval);
1630
1631                         len = sprintf(buf, "%s\n", pval);
1632                         break;
1633                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
1634                         OP_STATE(ha->ip_config.iscsi_options,
1635                                  ISCSIOPTS_DISCOVERY_AUTH_EN, pval);
1636
1637                         len = sprintf(buf, "%s\n", pval);
1638                         break;
1639                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
1640                         OP_STATE(ha->ip_config.iscsi_options,
1641                                  ISCSIOPTS_DISCOVERY_LOGOUT_EN, pval);
1642
1643                         len = sprintf(buf, "%s\n", pval);
1644                         break;
1645                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
1646                         OP_STATE(ha->ip_config.iscsi_options,
1647                                  ISCSIOPTS_STRICT_LOGIN_COMP_EN, pval);
1648
1649                         len = sprintf(buf, "%s\n", pval);
1650                         break;
1651                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
1652                         len = sprintf(buf, "%s\n", ha->ip_config.iscsi_name);
1653                         break;
1654                 default:
1655                         len = -ENOSYS;
1656                 }
1657         }
1658
1659         return len;
1660 }
1661
1662 static struct iscsi_endpoint *
1663 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1664                    int non_blocking)
1665 {
1666         int ret;
1667         struct iscsi_endpoint *ep;
1668         struct qla_endpoint *qla_ep;
1669         struct scsi_qla_host *ha;
1670         struct sockaddr_in *addr;
1671         struct sockaddr_in6 *addr6;
1672
1673         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1674         if (!shost) {
1675                 ret = -ENXIO;
1676                 printk(KERN_ERR "%s: shost is NULL\n",
1677                        __func__);
1678                 return ERR_PTR(ret);
1679         }
1680
1681         ha = iscsi_host_priv(shost);
1682
1683         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
1684         if (!ep) {
1685                 ret = -ENOMEM;
1686                 return ERR_PTR(ret);
1687         }
1688
1689         qla_ep = ep->dd_data;
1690         memset(qla_ep, 0, sizeof(struct qla_endpoint));
1691         if (dst_addr->sa_family == AF_INET) {
1692                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
1693                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
1694                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
1695                                   (char *)&addr->sin_addr));
1696         } else if (dst_addr->sa_family == AF_INET6) {
1697                 memcpy(&qla_ep->dst_addr, dst_addr,
1698                        sizeof(struct sockaddr_in6));
1699                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
1700                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
1701                                   (char *)&addr6->sin6_addr));
1702         }
1703
1704         qla_ep->host = shost;
1705
1706         return ep;
1707 }
1708
1709 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1710 {
1711         struct qla_endpoint *qla_ep;
1712         struct scsi_qla_host *ha;
1713         int ret = 0;
1714
1715         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1716         qla_ep = ep->dd_data;
1717         ha = to_qla_host(qla_ep->host);
1718
1719         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
1720                 ret = 1;
1721
1722         return ret;
1723 }
1724
1725 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
1726 {
1727         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1728         iscsi_destroy_endpoint(ep);
1729 }
1730
1731 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
1732                                 enum iscsi_param param,
1733                                 char *buf)
1734 {
1735         struct qla_endpoint *qla_ep = ep->dd_data;
1736         struct sockaddr *dst_addr;
1737
1738         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1739
1740         switch (param) {
1741         case ISCSI_PARAM_CONN_PORT:
1742         case ISCSI_PARAM_CONN_ADDRESS:
1743                 if (!qla_ep)
1744                         return -ENOTCONN;
1745
1746                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1747                 if (!dst_addr)
1748                         return -ENOTCONN;
1749
1750                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1751                                                  &qla_ep->dst_addr, param, buf);
1752         default:
1753                 return -ENOSYS;
1754         }
1755 }
1756
1757 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1758                                    struct iscsi_stats *stats)
1759 {
1760         struct iscsi_session *sess;
1761         struct iscsi_cls_session *cls_sess;
1762         struct ddb_entry *ddb_entry;
1763         struct scsi_qla_host *ha;
1764         struct ql_iscsi_stats *ql_iscsi_stats;
1765         int stats_size;
1766         int ret;
1767         dma_addr_t iscsi_stats_dma;
1768
1769         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1770
1771         cls_sess = iscsi_conn_to_session(cls_conn);
1772         sess = cls_sess->dd_data;
1773         ddb_entry = sess->dd_data;
1774         ha = ddb_entry->ha;
1775
1776         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1777         /* Allocate memory */
1778         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1779                                             &iscsi_stats_dma, GFP_KERNEL);
1780         if (!ql_iscsi_stats) {
1781                 ql4_printk(KERN_ERR, ha,
1782                            "Unable to allocate memory for iscsi stats\n");
1783                 goto exit_get_stats;
1784         }
1785
1786         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
1787                                      iscsi_stats_dma);
1788         if (ret != QLA_SUCCESS) {
1789                 ql4_printk(KERN_ERR, ha,
1790                            "Unable to retrieve iscsi stats\n");
1791                 goto free_stats;
1792         }
1793
1794         /* octets */
1795         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
1796         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
1797         /* xmit pdus */
1798         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
1799         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
1800         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
1801         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
1802         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
1803         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
1804         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
1805         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
1806         /* recv pdus */
1807         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
1808         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
1809         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
1810         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
1811         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
1812         stats->logoutrsp_pdus =
1813                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
1814         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
1815         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
1816         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
1817
1818 free_stats:
1819         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
1820                           iscsi_stats_dma);
1821 exit_get_stats:
1822         return;
1823 }
1824
1825 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
1826 {
1827         struct iscsi_cls_session *session;
1828         struct iscsi_session *sess;
1829         unsigned long flags;
1830         enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
1831
1832         session = starget_to_session(scsi_target(sc->device));
1833         sess = session->dd_data;
1834
1835         spin_lock_irqsave(&session->lock, flags);
1836         if (session->state == ISCSI_SESSION_FAILED)
1837                 ret = BLK_EH_RESET_TIMER;
1838         spin_unlock_irqrestore(&session->lock, flags);
1839
1840         return ret;
1841 }
1842
1843 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
1844 {
1845         struct scsi_qla_host *ha = to_qla_host(shost);
1846         struct iscsi_cls_host *ihost = shost->shost_data;
1847         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
1848
1849         qla4xxx_get_firmware_state(ha);
1850
1851         switch (ha->addl_fw_state & 0x0F00) {
1852         case FW_ADDSTATE_LINK_SPEED_10MBPS:
1853                 speed = ISCSI_PORT_SPEED_10MBPS;
1854                 break;
1855         case FW_ADDSTATE_LINK_SPEED_100MBPS:
1856                 speed = ISCSI_PORT_SPEED_100MBPS;
1857                 break;
1858         case FW_ADDSTATE_LINK_SPEED_1GBPS:
1859                 speed = ISCSI_PORT_SPEED_1GBPS;
1860                 break;
1861         case FW_ADDSTATE_LINK_SPEED_10GBPS:
1862                 speed = ISCSI_PORT_SPEED_10GBPS;
1863                 break;
1864         }
1865         ihost->port_speed = speed;
1866 }
1867
1868 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1869 {
1870         struct scsi_qla_host *ha = to_qla_host(shost);
1871         struct iscsi_cls_host *ihost = shost->shost_data;
1872         uint32_t state = ISCSI_PORT_STATE_DOWN;
1873
1874         if (test_bit(AF_LINK_UP, &ha->flags))
1875                 state = ISCSI_PORT_STATE_UP;
1876
1877         ihost->port_state = state;
1878 }
1879
1880 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1881                                   enum iscsi_host_param param, char *buf)
1882 {
1883         struct scsi_qla_host *ha = to_qla_host(shost);
1884         int len;
1885
1886         switch (param) {
1887         case ISCSI_HOST_PARAM_HWADDRESS:
1888                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1889                 break;
1890         case ISCSI_HOST_PARAM_IPADDRESS:
1891                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1892                 break;
1893         case ISCSI_HOST_PARAM_INITIATOR_NAME:
1894                 len = sprintf(buf, "%s\n", ha->name_string);
1895                 break;
1896         case ISCSI_HOST_PARAM_PORT_STATE:
1897                 qla4xxx_set_port_state(shost);
1898                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1899                 break;
1900         case ISCSI_HOST_PARAM_PORT_SPEED:
1901                 qla4xxx_set_port_speed(shost);
1902                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1903                 break;
1904         default:
1905                 return -ENOSYS;
1906         }
1907
1908         return len;
1909 }
1910
1911 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1912 {
1913         if (ha->iface_ipv4)
1914                 return;
1915
1916         /* IPv4 */
1917         ha->iface_ipv4 = iscsi_create_iface(ha->host,
1918                                             &qla4xxx_iscsi_transport,
1919                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
1920         if (!ha->iface_ipv4)
1921                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1922                            "iface0.\n");
1923 }
1924
1925 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1926 {
1927         if (!ha->iface_ipv6_0)
1928                 /* IPv6 iface-0 */
1929                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1930                                                       &qla4xxx_iscsi_transport,
1931                                                       ISCSI_IFACE_TYPE_IPV6, 0,
1932                                                       0);
1933         if (!ha->iface_ipv6_0)
1934                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1935                            "iface0.\n");
1936
1937         if (!ha->iface_ipv6_1)
1938                 /* IPv6 iface-1 */
1939                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1940                                                       &qla4xxx_iscsi_transport,
1941                                                       ISCSI_IFACE_TYPE_IPV6, 1,
1942                                                       0);
1943         if (!ha->iface_ipv6_1)
1944                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1945                            "iface1.\n");
1946 }
1947
1948 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
1949 {
1950         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
1951                 qla4xxx_create_ipv4_iface(ha);
1952
1953         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
1954                 qla4xxx_create_ipv6_iface(ha);
1955 }
1956
1957 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
1958 {
1959         if (ha->iface_ipv4) {
1960                 iscsi_destroy_iface(ha->iface_ipv4);
1961                 ha->iface_ipv4 = NULL;
1962         }
1963 }
1964
1965 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
1966 {
1967         if (ha->iface_ipv6_0) {
1968                 iscsi_destroy_iface(ha->iface_ipv6_0);
1969                 ha->iface_ipv6_0 = NULL;
1970         }
1971         if (ha->iface_ipv6_1) {
1972                 iscsi_destroy_iface(ha->iface_ipv6_1);
1973                 ha->iface_ipv6_1 = NULL;
1974         }
1975 }
1976
1977 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
1978 {
1979         qla4xxx_destroy_ipv4_iface(ha);
1980         qla4xxx_destroy_ipv6_iface(ha);
1981 }
1982
1983 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1984                              struct iscsi_iface_param_info *iface_param,
1985                              struct addr_ctrl_blk *init_fw_cb)
1986 {
1987         /*
1988          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1989          * iface_num 1 is valid only for IPv6 Addr.
1990          */
1991         switch (iface_param->param) {
1992         case ISCSI_NET_PARAM_IPV6_ADDR:
1993                 if (iface_param->iface_num & 0x1)
1994                         /* IPv6 Addr 1 */
1995                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
1996                                sizeof(init_fw_cb->ipv6_addr1));
1997                 else
1998                         /* IPv6 Addr 0 */
1999                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
2000                                sizeof(init_fw_cb->ipv6_addr0));
2001                 break;
2002         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
2003                 if (iface_param->iface_num & 0x1)
2004                         break;
2005                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
2006                        sizeof(init_fw_cb->ipv6_if_id));
2007                 break;
2008         case ISCSI_NET_PARAM_IPV6_ROUTER:
2009                 if (iface_param->iface_num & 0x1)
2010                         break;
2011                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
2012                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2013                 break;
2014         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
2015                 /* Autocfg applies to even interface */
2016                 if (iface_param->iface_num & 0x1)
2017                         break;
2018
2019                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
2020                         init_fw_cb->ipv6_addtl_opts &=
2021                                 cpu_to_le16(
2022                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2023                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
2024                         init_fw_cb->ipv6_addtl_opts |=
2025                                 cpu_to_le16(
2026                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2027                 else
2028                         ql4_printk(KERN_ERR, ha,
2029                                    "Invalid autocfg setting for IPv6 addr\n");
2030                 break;
2031         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
2032                 /* Autocfg applies to even interface */
2033                 if (iface_param->iface_num & 0x1)
2034                         break;
2035
2036                 if (iface_param->value[0] ==
2037                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
2038                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
2039                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2040                 else if (iface_param->value[0] ==
2041                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
2042                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
2043                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2044                 else
2045                         ql4_printk(KERN_ERR, ha,
2046                                    "Invalid autocfg setting for IPv6 linklocal addr\n");
2047                 break;
2048         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
2049                 /* Autocfg applies to even interface */
2050                 if (iface_param->iface_num & 0x1)
2051                         break;
2052
2053                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
2054                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
2055                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2056                 break;
2057         case ISCSI_NET_PARAM_IFACE_ENABLE:
2058                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2059                         init_fw_cb->ipv6_opts |=
2060                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
2061                         qla4xxx_create_ipv6_iface(ha);
2062                 } else {
2063                         init_fw_cb->ipv6_opts &=
2064                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
2065                                             0xFFFF);
2066                         qla4xxx_destroy_ipv6_iface(ha);
2067                 }
2068                 break;
2069         case ISCSI_NET_PARAM_VLAN_TAG:
2070                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
2071                         break;
2072                 init_fw_cb->ipv6_vlan_tag =
2073                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2074                 break;
2075         case ISCSI_NET_PARAM_VLAN_ENABLED:
2076                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2077                         init_fw_cb->ipv6_opts |=
2078                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
2079                 else
2080                         init_fw_cb->ipv6_opts &=
2081                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
2082                 break;
2083         case ISCSI_NET_PARAM_MTU:
2084                 init_fw_cb->eth_mtu_size =
2085                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2086                 break;
2087         case ISCSI_NET_PARAM_PORT:
2088                 /* Autocfg applies to even interface */
2089                 if (iface_param->iface_num & 0x1)
2090                         break;
2091
2092                 init_fw_cb->ipv6_port =
2093                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2094                 break;
2095         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2096                 if (iface_param->iface_num & 0x1)
2097                         break;
2098                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2099                         init_fw_cb->ipv6_tcp_opts |=
2100                                 cpu_to_le16(IPV6_TCPOPT_DELAYED_ACK_DISABLE);
2101                 else
2102                         init_fw_cb->ipv6_tcp_opts &=
2103                                 cpu_to_le16(~IPV6_TCPOPT_DELAYED_ACK_DISABLE);
2104                 break;
2105         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2106                 if (iface_param->iface_num & 0x1)
2107                         break;
2108                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2109                         init_fw_cb->ipv6_tcp_opts |=
2110                                 cpu_to_le16(IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2111                 else
2112                         init_fw_cb->ipv6_tcp_opts &=
2113                                 cpu_to_le16(~IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2114                 break;
2115         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2116                 if (iface_param->iface_num & 0x1)
2117                         break;
2118                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2119                         init_fw_cb->ipv6_tcp_opts |=
2120                                 cpu_to_le16(IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2121                 else
2122                         init_fw_cb->ipv6_tcp_opts &=
2123                                 cpu_to_le16(~IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2124                 break;
2125         case ISCSI_NET_PARAM_TCP_WSF:
2126                 if (iface_param->iface_num & 0x1)
2127                         break;
2128                 init_fw_cb->ipv6_tcp_wsf = iface_param->value[0];
2129                 break;
2130         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2131                 if (iface_param->iface_num & 0x1)
2132                         break;
2133                 init_fw_cb->ipv6_tcp_opts &=
2134                                         cpu_to_le16(~IPV6_TCPOPT_TIMER_SCALE);
2135                 init_fw_cb->ipv6_tcp_opts |=
2136                                 cpu_to_le16((iface_param->value[0] << 1) &
2137                                             IPV6_TCPOPT_TIMER_SCALE);
2138                 break;
2139         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2140                 if (iface_param->iface_num & 0x1)
2141                         break;
2142                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2143                         init_fw_cb->ipv6_tcp_opts |=
2144                                 cpu_to_le16(IPV6_TCPOPT_TIMESTAMP_EN);
2145                 else
2146                         init_fw_cb->ipv6_tcp_opts &=
2147                                 cpu_to_le16(~IPV6_TCPOPT_TIMESTAMP_EN);
2148                 break;
2149         case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
2150                 if (iface_param->iface_num & 0x1)
2151                         break;
2152                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2153                         init_fw_cb->ipv6_opts |=
2154                                 cpu_to_le16(IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2155                 else
2156                         init_fw_cb->ipv6_opts &=
2157                                 cpu_to_le16(~IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2158                 break;
2159         case ISCSI_NET_PARAM_REDIRECT_EN:
2160                 if (iface_param->iface_num & 0x1)
2161                         break;
2162                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2163                         init_fw_cb->ipv6_opts |=
2164                                 cpu_to_le16(IPV6_OPT_REDIRECT_EN);
2165                 else
2166                         init_fw_cb->ipv6_opts &=
2167                                 cpu_to_le16(~IPV6_OPT_REDIRECT_EN);
2168                 break;
2169         case ISCSI_NET_PARAM_IPV6_MLD_EN:
2170                 if (iface_param->iface_num & 0x1)
2171                         break;
2172                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2173                         init_fw_cb->ipv6_addtl_opts |=
2174                                 cpu_to_le16(IPV6_ADDOPT_MLD_EN);
2175                 else
2176                         init_fw_cb->ipv6_addtl_opts &=
2177                                 cpu_to_le16(~IPV6_ADDOPT_MLD_EN);
2178                 break;
2179         case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
2180                 if (iface_param->iface_num & 0x1)
2181                         break;
2182                 init_fw_cb->ipv6_flow_lbl =
2183                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2184                 break;
2185         case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
2186                 if (iface_param->iface_num & 0x1)
2187                         break;
2188                 init_fw_cb->ipv6_traffic_class = iface_param->value[0];
2189                 break;
2190         case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
2191                 if (iface_param->iface_num & 0x1)
2192                         break;
2193                 init_fw_cb->ipv6_hop_limit = iface_param->value[0];
2194                 break;
2195         case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
2196                 if (iface_param->iface_num & 0x1)
2197                         break;
2198                 init_fw_cb->ipv6_nd_reach_time =
2199                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2200                 break;
2201         case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
2202                 if (iface_param->iface_num & 0x1)
2203                         break;
2204                 init_fw_cb->ipv6_nd_rexmit_timer =
2205                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2206                 break;
2207         case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
2208                 if (iface_param->iface_num & 0x1)
2209                         break;
2210                 init_fw_cb->ipv6_nd_stale_timeout =
2211                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2212                 break;
2213         case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
2214                 if (iface_param->iface_num & 0x1)
2215                         break;
2216                 init_fw_cb->ipv6_dup_addr_detect_count = iface_param->value[0];
2217                 break;
2218         case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
2219                 if (iface_param->iface_num & 0x1)
2220                         break;
2221                 init_fw_cb->ipv6_gw_advrt_mtu =
2222                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2223                 break;
2224         default:
2225                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
2226                            iface_param->param);
2227                 break;
2228         }
2229 }
2230
2231 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
2232                              struct iscsi_iface_param_info *iface_param,
2233                              struct addr_ctrl_blk *init_fw_cb)
2234 {
2235         switch (iface_param->param) {
2236         case ISCSI_NET_PARAM_IPV4_ADDR:
2237                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
2238                        sizeof(init_fw_cb->ipv4_addr));
2239                 break;
2240         case ISCSI_NET_PARAM_IPV4_SUBNET:
2241                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
2242                        sizeof(init_fw_cb->ipv4_subnet));
2243                 break;
2244         case ISCSI_NET_PARAM_IPV4_GW:
2245                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
2246                        sizeof(init_fw_cb->ipv4_gw_addr));
2247                 break;
2248         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
2249                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
2250                         init_fw_cb->ipv4_tcp_opts |=
2251                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
2252                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
2253                         init_fw_cb->ipv4_tcp_opts &=
2254                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
2255                 else
2256                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
2257                 break;
2258         case ISCSI_NET_PARAM_IFACE_ENABLE:
2259                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2260                         init_fw_cb->ipv4_ip_opts |=
2261                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
2262                         qla4xxx_create_ipv4_iface(ha);
2263                 } else {
2264                         init_fw_cb->ipv4_ip_opts &=
2265                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
2266                                             0xFFFF);
2267                         qla4xxx_destroy_ipv4_iface(ha);
2268                 }
2269                 break;
2270         case ISCSI_NET_PARAM_VLAN_TAG:
2271                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
2272                         break;
2273                 init_fw_cb->ipv4_vlan_tag =
2274                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2275                 break;
2276         case ISCSI_NET_PARAM_VLAN_ENABLED:
2277                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2278                         init_fw_cb->ipv4_ip_opts |=
2279                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
2280                 else
2281                         init_fw_cb->ipv4_ip_opts &=
2282                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
2283                 break;
2284         case ISCSI_NET_PARAM_MTU:
2285                 init_fw_cb->eth_mtu_size =
2286                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2287                 break;
2288         case ISCSI_NET_PARAM_PORT:
2289                 init_fw_cb->ipv4_port =
2290                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2291                 break;
2292         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2293                 if (iface_param->iface_num & 0x1)
2294                         break;
2295                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2296                         init_fw_cb->ipv4_tcp_opts |=
2297                                 cpu_to_le16(TCPOPT_DELAYED_ACK_DISABLE);
2298                 else
2299                         init_fw_cb->ipv4_tcp_opts &=
2300                                 cpu_to_le16(~TCPOPT_DELAYED_ACK_DISABLE);
2301                 break;
2302         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2303                 if (iface_param->iface_num & 0x1)
2304                         break;
2305                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2306                         init_fw_cb->ipv4_tcp_opts |=
2307                                 cpu_to_le16(TCPOPT_NAGLE_ALGO_DISABLE);
2308                 else
2309                         init_fw_cb->ipv4_tcp_opts &=
2310                                 cpu_to_le16(~TCPOPT_NAGLE_ALGO_DISABLE);
2311                 break;
2312         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2313                 if (iface_param->iface_num & 0x1)
2314                         break;
2315                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2316                         init_fw_cb->ipv4_tcp_opts |=
2317                                 cpu_to_le16(TCPOPT_WINDOW_SCALE_DISABLE);
2318                 else
2319                         init_fw_cb->ipv4_tcp_opts &=
2320                                 cpu_to_le16(~TCPOPT_WINDOW_SCALE_DISABLE);
2321                 break;
2322         case ISCSI_NET_PARAM_TCP_WSF:
2323                 if (iface_param->iface_num & 0x1)
2324                         break;
2325                 init_fw_cb->ipv4_tcp_wsf = iface_param->value[0];
2326                 break;
2327         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2328                 if (iface_param->iface_num & 0x1)
2329                         break;
2330                 init_fw_cb->ipv4_tcp_opts &= cpu_to_le16(~TCPOPT_TIMER_SCALE);
2331                 init_fw_cb->ipv4_tcp_opts |=
2332                                 cpu_to_le16((iface_param->value[0] << 1) &
2333                                             TCPOPT_TIMER_SCALE);
2334                 break;
2335         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2336                 if (iface_param->iface_num & 0x1)
2337                         break;
2338                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2339                         init_fw_cb->ipv4_tcp_opts |=
2340                                 cpu_to_le16(TCPOPT_TIMESTAMP_ENABLE);
2341                 else
2342                         init_fw_cb->ipv4_tcp_opts &=
2343                                 cpu_to_le16(~TCPOPT_TIMESTAMP_ENABLE);
2344                 break;
2345         case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
2346                 if (iface_param->iface_num & 0x1)
2347                         break;
2348                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2349                         init_fw_cb->ipv4_tcp_opts |=
2350                                 cpu_to_le16(TCPOPT_DNS_SERVER_IP_EN);
2351                 else
2352                         init_fw_cb->ipv4_tcp_opts &=
2353                                 cpu_to_le16(~TCPOPT_DNS_SERVER_IP_EN);
2354                 break;
2355         case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
2356                 if (iface_param->iface_num & 0x1)
2357                         break;
2358                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2359                         init_fw_cb->ipv4_tcp_opts |=
2360                                 cpu_to_le16(TCPOPT_SLP_DA_INFO_EN);
2361                 else
2362                         init_fw_cb->ipv4_tcp_opts &=
2363                                 cpu_to_le16(~TCPOPT_SLP_DA_INFO_EN);
2364                 break;
2365         case ISCSI_NET_PARAM_IPV4_TOS_EN:
2366                 if (iface_param->iface_num & 0x1)
2367                         break;
2368                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2369                         init_fw_cb->ipv4_ip_opts |=
2370                                 cpu_to_le16(IPOPT_IPV4_TOS_EN);
2371                 else
2372                         init_fw_cb->ipv4_ip_opts &=
2373                                 cpu_to_le16(~IPOPT_IPV4_TOS_EN);
2374                 break;
2375         case ISCSI_NET_PARAM_IPV4_TOS:
2376                 if (iface_param->iface_num & 0x1)
2377                         break;
2378                 init_fw_cb->ipv4_tos = iface_param->value[0];
2379                 break;
2380         case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
2381                 if (iface_param->iface_num & 0x1)
2382                         break;
2383                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2384                         init_fw_cb->ipv4_ip_opts |=
2385                                         cpu_to_le16(IPOPT_GRAT_ARP_EN);
2386                 else
2387                         init_fw_cb->ipv4_ip_opts &=
2388                                         cpu_to_le16(~IPOPT_GRAT_ARP_EN);
2389                 break;
2390         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
2391                 if (iface_param->iface_num & 0x1)
2392                         break;
2393                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2394                         init_fw_cb->ipv4_ip_opts |=
2395                                 cpu_to_le16(IPOPT_ALT_CID_EN);
2396                 else
2397                         init_fw_cb->ipv4_ip_opts &=
2398                                 cpu_to_le16(~IPOPT_ALT_CID_EN);
2399                 break;
2400         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
2401                 if (iface_param->iface_num & 0x1)
2402                         break;
2403                 memcpy(init_fw_cb->ipv4_dhcp_alt_cid, iface_param->value,
2404                        (sizeof(init_fw_cb->ipv4_dhcp_alt_cid) - 1));
2405                 init_fw_cb->ipv4_dhcp_alt_cid_len =
2406                                         strlen(init_fw_cb->ipv4_dhcp_alt_cid);
2407                 break;
2408         case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
2409                 if (iface_param->iface_num & 0x1)
2410                         break;
2411                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2412                         init_fw_cb->ipv4_ip_opts |=
2413                                         cpu_to_le16(IPOPT_REQ_VID_EN);
2414                 else
2415                         init_fw_cb->ipv4_ip_opts &=
2416                                         cpu_to_le16(~IPOPT_REQ_VID_EN);
2417                 break;
2418         case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
2419                 if (iface_param->iface_num & 0x1)
2420                         break;
2421                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2422                         init_fw_cb->ipv4_ip_opts |=
2423                                         cpu_to_le16(IPOPT_USE_VID_EN);
2424                 else
2425                         init_fw_cb->ipv4_ip_opts &=
2426                                         cpu_to_le16(~IPOPT_USE_VID_EN);
2427                 break;
2428         case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
2429                 if (iface_param->iface_num & 0x1)
2430                         break;
2431                 memcpy(init_fw_cb->ipv4_dhcp_vid, iface_param->value,
2432                        (sizeof(init_fw_cb->ipv4_dhcp_vid) - 1));
2433                 init_fw_cb->ipv4_dhcp_vid_len =
2434                                         strlen(init_fw_cb->ipv4_dhcp_vid);
2435                 break;
2436         case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
2437                 if (iface_param->iface_num & 0x1)
2438                         break;
2439                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2440                         init_fw_cb->ipv4_ip_opts |=
2441                                         cpu_to_le16(IPOPT_LEARN_IQN_EN);
2442                 else
2443                         init_fw_cb->ipv4_ip_opts &=
2444                                         cpu_to_le16(~IPOPT_LEARN_IQN_EN);
2445                 break;
2446         case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
2447                 if (iface_param->iface_num & 0x1)
2448                         break;
2449                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2450                         init_fw_cb->ipv4_ip_opts |=
2451                                 cpu_to_le16(IPOPT_FRAGMENTATION_DISABLE);
2452                 else
2453                         init_fw_cb->ipv4_ip_opts &=
2454                                 cpu_to_le16(~IPOPT_FRAGMENTATION_DISABLE);
2455                 break;
2456         case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
2457                 if (iface_param->iface_num & 0x1)
2458                         break;
2459                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2460                         init_fw_cb->ipv4_ip_opts |=
2461                                 cpu_to_le16(IPOPT_IN_FORWARD_EN);
2462                 else
2463                         init_fw_cb->ipv4_ip_opts &=
2464                                 cpu_to_le16(~IPOPT_IN_FORWARD_EN);
2465                 break;
2466         case ISCSI_NET_PARAM_REDIRECT_EN:
2467                 if (iface_param->iface_num & 0x1)
2468                         break;
2469                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2470                         init_fw_cb->ipv4_ip_opts |=
2471                                 cpu_to_le16(IPOPT_ARP_REDIRECT_EN);
2472                 else
2473                         init_fw_cb->ipv4_ip_opts &=
2474                                 cpu_to_le16(~IPOPT_ARP_REDIRECT_EN);
2475                 break;
2476         case ISCSI_NET_PARAM_IPV4_TTL:
2477                 if (iface_param->iface_num & 0x1)
2478                         break;
2479                 init_fw_cb->ipv4_ttl = iface_param->value[0];
2480                 break;
2481         default:
2482                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
2483                            iface_param->param);
2484                 break;
2485         }
2486 }
2487
2488 static void qla4xxx_set_iscsi_param(struct scsi_qla_host *ha,
2489                                     struct iscsi_iface_param_info *iface_param,
2490                                     struct addr_ctrl_blk *init_fw_cb)
2491 {
2492         switch (iface_param->param) {
2493         case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
2494                 if (iface_param->iface_num & 0x1)
2495                         break;
2496                 init_fw_cb->def_timeout =
2497                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2498                 break;
2499         case ISCSI_IFACE_PARAM_HDRDGST_EN:
2500                 if (iface_param->iface_num & 0x1)
2501                         break;
2502                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2503                         init_fw_cb->iscsi_opts |=
2504                                 cpu_to_le16(ISCSIOPTS_HEADER_DIGEST_EN);
2505                 else
2506                         init_fw_cb->iscsi_opts &=
2507                                 cpu_to_le16(~ISCSIOPTS_HEADER_DIGEST_EN);
2508                 break;
2509         case ISCSI_IFACE_PARAM_DATADGST_EN:
2510                 if (iface_param->iface_num & 0x1)
2511                         break;
2512                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2513                         init_fw_cb->iscsi_opts |=
2514                                 cpu_to_le16(ISCSIOPTS_DATA_DIGEST_EN);
2515                 else
2516                         init_fw_cb->iscsi_opts &=
2517                                 cpu_to_le16(~ISCSIOPTS_DATA_DIGEST_EN);
2518                 break;
2519         case ISCSI_IFACE_PARAM_IMM_DATA_EN:
2520                 if (iface_param->iface_num & 0x1)
2521                         break;
2522                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2523                         init_fw_cb->iscsi_opts |=
2524                                 cpu_to_le16(ISCSIOPTS_IMMEDIATE_DATA_EN);
2525                 else
2526                         init_fw_cb->iscsi_opts &=
2527                                 cpu_to_le16(~ISCSIOPTS_IMMEDIATE_DATA_EN);
2528                 break;
2529         case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
2530                 if (iface_param->iface_num & 0x1)
2531                         break;
2532                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2533                         init_fw_cb->iscsi_opts |=
2534                                 cpu_to_le16(ISCSIOPTS_INITIAL_R2T_EN);
2535                 else
2536                         init_fw_cb->iscsi_opts &=
2537                                 cpu_to_le16(~ISCSIOPTS_INITIAL_R2T_EN);
2538                 break;
2539         case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
2540                 if (iface_param->iface_num & 0x1)
2541                         break;
2542                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2543                         init_fw_cb->iscsi_opts |=
2544                                 cpu_to_le16(ISCSIOPTS_DATA_SEQ_INORDER_EN);
2545                 else
2546                         init_fw_cb->iscsi_opts &=
2547                                 cpu_to_le16(~ISCSIOPTS_DATA_SEQ_INORDER_EN);
2548                 break;
2549         case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
2550                 if (iface_param->iface_num & 0x1)
2551                         break;
2552                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2553                         init_fw_cb->iscsi_opts |=
2554                                 cpu_to_le16(ISCSIOPTS_DATA_PDU_INORDER_EN);
2555                 else
2556                         init_fw_cb->iscsi_opts &=
2557                                 cpu_to_le16(~ISCSIOPTS_DATA_PDU_INORDER_EN);
2558                 break;
2559         case ISCSI_IFACE_PARAM_ERL:
2560                 if (iface_param->iface_num & 0x1)
2561                         break;
2562                 init_fw_cb->iscsi_opts &= cpu_to_le16(~ISCSIOPTS_ERL);
2563                 init_fw_cb->iscsi_opts |= cpu_to_le16(iface_param->value[0] &
2564                                                       ISCSIOPTS_ERL);
2565                 break;
2566         case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
2567                 if (iface_param->iface_num & 0x1)
2568                         break;
2569                 init_fw_cb->iscsi_max_pdu_size =
2570                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2571                                 BYTE_UNITS;
2572                 break;
2573         case ISCSI_IFACE_PARAM_FIRST_BURST:
2574                 if (iface_param->iface_num & 0x1)
2575                         break;
2576                 init_fw_cb->iscsi_fburst_len =
2577                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2578                                 BYTE_UNITS;
2579                 break;
2580         case ISCSI_IFACE_PARAM_MAX_R2T:
2581                 if (iface_param->iface_num & 0x1)
2582                         break;
2583                 init_fw_cb->iscsi_max_outstnd_r2t =
2584                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2585                 break;
2586         case ISCSI_IFACE_PARAM_MAX_BURST:
2587                 if (iface_param->iface_num & 0x1)
2588                         break;
2589                 init_fw_cb->iscsi_max_burst_len =
2590                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2591                                 BYTE_UNITS;
2592                 break;
2593         case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
2594                 if (iface_param->iface_num & 0x1)
2595                         break;
2596                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2597                         init_fw_cb->iscsi_opts |=
2598                                 cpu_to_le16(ISCSIOPTS_CHAP_AUTH_EN);
2599                 else
2600                         init_fw_cb->iscsi_opts &=
2601                                 cpu_to_le16(~ISCSIOPTS_CHAP_AUTH_EN);
2602                 break;
2603         case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
2604                 if (iface_param->iface_num & 0x1)
2605                         break;
2606                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2607                         init_fw_cb->iscsi_opts |=
2608                                 cpu_to_le16(ISCSIOPTS_BIDI_CHAP_EN);
2609                 else
2610                         init_fw_cb->iscsi_opts &=
2611                                 cpu_to_le16(~ISCSIOPTS_BIDI_CHAP_EN);
2612                 break;
2613         case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
2614                 if (iface_param->iface_num & 0x1)
2615                         break;
2616                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2617                         init_fw_cb->iscsi_opts |=
2618                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_AUTH_EN);
2619                 else
2620                         init_fw_cb->iscsi_opts &=
2621                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_AUTH_EN);
2622                 break;
2623         case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
2624                 if (iface_param->iface_num & 0x1)
2625                         break;
2626                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2627                         init_fw_cb->iscsi_opts |=
2628                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2629                 else
2630                         init_fw_cb->iscsi_opts &=
2631                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2632                 break;
2633         case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
2634                 if (iface_param->iface_num & 0x1)
2635                         break;
2636                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2637                         init_fw_cb->iscsi_opts |=
2638                                 cpu_to_le16(ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2639                 else
2640                         init_fw_cb->iscsi_opts &=
2641                                 cpu_to_le16(~ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2642                 break;
2643         default:
2644                 ql4_printk(KERN_ERR, ha, "Unknown iscsi param = %d\n",
2645                            iface_param->param);
2646                 break;
2647         }
2648 }
2649
2650 static void
2651 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
2652 {
2653         struct addr_ctrl_blk_def *acb;
2654         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
2655         memset(acb->reserved1, 0, sizeof(acb->reserved1));
2656         memset(acb->reserved2, 0, sizeof(acb->reserved2));
2657         memset(acb->reserved3, 0, sizeof(acb->reserved3));
2658         memset(acb->reserved4, 0, sizeof(acb->reserved4));
2659         memset(acb->reserved5, 0, sizeof(acb->reserved5));
2660         memset(acb->reserved6, 0, sizeof(acb->reserved6));
2661         memset(acb->reserved7, 0, sizeof(acb->reserved7));
2662         memset(acb->reserved8, 0, sizeof(acb->reserved8));
2663         memset(acb->reserved9, 0, sizeof(acb->reserved9));
2664         memset(acb->reserved10, 0, sizeof(acb->reserved10));
2665         memset(acb->reserved11, 0, sizeof(acb->reserved11));
2666         memset(acb->reserved12, 0, sizeof(acb->reserved12));
2667         memset(acb->reserved13, 0, sizeof(acb->reserved13));
2668         memset(acb->reserved14, 0, sizeof(acb->reserved14));
2669         memset(acb->reserved15, 0, sizeof(acb->reserved15));
2670 }
2671
2672 static int
2673 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
2674 {
2675         struct scsi_qla_host *ha = to_qla_host(shost);
2676         int rval = 0;
2677         struct iscsi_iface_param_info *iface_param = NULL;
2678         struct addr_ctrl_blk *init_fw_cb = NULL;
2679         dma_addr_t init_fw_cb_dma;
2680         uint32_t mbox_cmd[MBOX_REG_COUNT];
2681         uint32_t mbox_sts[MBOX_REG_COUNT];
2682         uint32_t rem = len;
2683         struct nlattr *attr;
2684
2685         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
2686                                         sizeof(struct addr_ctrl_blk),
2687                                         &init_fw_cb_dma, GFP_KERNEL);
2688         if (!init_fw_cb) {
2689                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
2690                            __func__);
2691                 return -ENOMEM;
2692         }
2693
2694         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2695         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2696         memset(&mbox_sts, 0, sizeof(mbox_sts));
2697
2698         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
2699                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
2700                 rval = -EIO;
2701                 goto exit_init_fw_cb;
2702         }
2703
2704         nla_for_each_attr(attr, data, len, rem) {
2705                 iface_param = nla_data(attr);
2706
2707                 if (iface_param->param_type == ISCSI_NET_PARAM) {
2708                         switch (iface_param->iface_type) {
2709                         case ISCSI_IFACE_TYPE_IPV4:
2710                                 switch (iface_param->iface_num) {
2711                                 case 0:
2712                                         qla4xxx_set_ipv4(ha, iface_param,
2713                                                          init_fw_cb);
2714                                         break;
2715                                 default:
2716                                 /* Cannot have more than one IPv4 interface */
2717                                         ql4_printk(KERN_ERR, ha,
2718                                                    "Invalid IPv4 iface number = %d\n",
2719                                                    iface_param->iface_num);
2720                                         break;
2721                                 }
2722                                 break;
2723                         case ISCSI_IFACE_TYPE_IPV6:
2724                                 switch (iface_param->iface_num) {
2725                                 case 0:
2726                                 case 1:
2727                                         qla4xxx_set_ipv6(ha, iface_param,
2728                                                          init_fw_cb);
2729                                         break;
2730                                 default:
2731                                 /* Cannot have more than two IPv6 interface */
2732                                         ql4_printk(KERN_ERR, ha,
2733                                                    "Invalid IPv6 iface number = %d\n",
2734                                                    iface_param->iface_num);
2735                                         break;
2736                                 }
2737                                 break;
2738                         default:
2739                                 ql4_printk(KERN_ERR, ha,
2740                                            "Invalid iface type\n");
2741                                 break;
2742                         }
2743                 } else if (iface_param->param_type == ISCSI_IFACE_PARAM) {
2744                                 qla4xxx_set_iscsi_param(ha, iface_param,
2745                                                         init_fw_cb);
2746                 } else {
2747                         continue;
2748                 }
2749         }
2750
2751         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
2752
2753         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
2754                                  sizeof(struct addr_ctrl_blk),
2755                                  FLASH_OPT_RMW_COMMIT);
2756         if (rval != QLA_SUCCESS) {
2757                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
2758                            __func__);
2759                 rval = -EIO;
2760                 goto exit_init_fw_cb;
2761         }
2762
2763         rval = qla4xxx_disable_acb(ha);
2764         if (rval != QLA_SUCCESS) {
2765                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
2766                            __func__);
2767                 rval = -EIO;
2768                 goto exit_init_fw_cb;
2769         }
2770
2771         wait_for_completion_timeout(&ha->disable_acb_comp,
2772                                     DISABLE_ACB_TOV * HZ);
2773
2774         qla4xxx_initcb_to_acb(init_fw_cb);
2775
2776         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
2777         if (rval != QLA_SUCCESS) {
2778                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
2779                            __func__);
2780                 rval = -EIO;
2781                 goto exit_init_fw_cb;
2782         }
2783
2784         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2785         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
2786                                   init_fw_cb_dma);
2787
2788 exit_init_fw_cb:
2789         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
2790                           init_fw_cb, init_fw_cb_dma);
2791
2792         return rval;
2793 }
2794
2795 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
2796                                      enum iscsi_param param, char *buf)
2797 {
2798         struct iscsi_session *sess = cls_sess->dd_data;
2799         struct ddb_entry *ddb_entry = sess->dd_data;
2800         struct scsi_qla_host *ha = ddb_entry->ha;
2801         struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
2802         struct ql4_chap_table chap_tbl;
2803         int rval, len;
2804         uint16_t idx;
2805
2806         memset(&chap_tbl, 0, sizeof(chap_tbl));
2807         switch (param) {
2808         case ISCSI_PARAM_CHAP_IN_IDX:
2809                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
2810                                               sess->password_in, BIDI_CHAP,
2811                                               &idx);
2812                 if (rval)
2813                         len = sprintf(buf, "\n");
2814                 else
2815                         len = sprintf(buf, "%hu\n", idx);
2816                 break;
2817         case ISCSI_PARAM_CHAP_OUT_IDX:
2818                 if (ddb_entry->ddb_type == FLASH_DDB) {
2819                         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
2820                                 idx = ddb_entry->chap_tbl_idx;
2821                                 rval = QLA_SUCCESS;
2822                         } else {
2823                                 rval = QLA_ERROR;
2824                         }
2825                 } else {
2826                         rval = qla4xxx_get_chap_index(ha, sess->username,
2827                                                       sess->password,
2828                                                       LOCAL_CHAP, &idx);
2829                 }
2830                 if (rval)
2831                         len = sprintf(buf, "\n");
2832                 else
2833                         len = sprintf(buf, "%hu\n", idx);
2834                 break;
2835         case ISCSI_PARAM_USERNAME:
2836         case ISCSI_PARAM_PASSWORD:
2837                 /* First, populate session username and password for FLASH DDB,
2838                  * if not already done. This happens when session login fails
2839                  * for a FLASH DDB.
2840                  */
2841                 if (ddb_entry->ddb_type == FLASH_DDB &&
2842                     ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
2843                     !sess->username && !sess->password) {
2844                         idx = ddb_entry->chap_tbl_idx;
2845                         rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
2846                                                             chap_tbl.secret,
2847                                                             idx);
2848                         if (!rval) {
2849                                 iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
2850                                                 (char *)chap_tbl.name,
2851                                                 strlen((char *)chap_tbl.name));
2852                                 iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
2853                                                 (char *)chap_tbl.secret,
2854                                                 chap_tbl.secret_len);
2855                         }
2856                 }
2857                 /* allow fall-through */
2858         default:
2859                 return iscsi_session_get_param(cls_sess, param, buf);
2860         }
2861
2862         return len;
2863 }
2864
2865 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
2866                                   enum iscsi_param param, char *buf)
2867 {
2868         struct iscsi_conn *conn;
2869         struct qla_conn *qla_conn;
2870         struct sockaddr *dst_addr;
2871         int len = 0;
2872
2873         conn = cls_conn->dd_data;
2874         qla_conn = conn->dd_data;
2875         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2876
2877         switch (param) {
2878         case ISCSI_PARAM_CONN_PORT:
2879         case ISCSI_PARAM_CONN_ADDRESS:
2880                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
2881                                                  dst_addr, param, buf);
2882         default:
2883                 return iscsi_conn_get_param(cls_conn, param, buf);
2884         }
2885
2886         return len;
2887
2888 }
2889
2890 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
2891 {
2892         uint32_t mbx_sts = 0;
2893         uint16_t tmp_ddb_index;
2894         int ret;
2895
2896 get_ddb_index:
2897         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
2898
2899         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
2900                 DEBUG2(ql4_printk(KERN_INFO, ha,
2901                                   "Free DDB index not available\n"));
2902                 ret = QLA_ERROR;
2903                 goto exit_get_ddb_index;
2904         }
2905
2906         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
2907                 goto get_ddb_index;
2908
2909         DEBUG2(ql4_printk(KERN_INFO, ha,
2910                           "Found a free DDB index at %d\n", tmp_ddb_index));
2911         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
2912         if (ret == QLA_ERROR) {
2913                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
2914                         ql4_printk(KERN_INFO, ha,
2915                                    "DDB index = %d not available trying next\n",
2916                                    tmp_ddb_index);
2917                         goto get_ddb_index;
2918                 }
2919                 DEBUG2(ql4_printk(KERN_INFO, ha,
2920                                   "Free FW DDB not available\n"));
2921         }
2922
2923         *ddb_index = tmp_ddb_index;
2924
2925 exit_get_ddb_index:
2926         return ret;
2927 }
2928
2929 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
2930                                    struct ddb_entry *ddb_entry,
2931                                    char *existing_ipaddr,
2932                                    char *user_ipaddr)
2933 {
2934         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
2935         char formatted_ipaddr[DDB_IPADDR_LEN];
2936         int status = QLA_SUCCESS, ret = 0;
2937
2938         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
2939                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2940                                '\0', NULL);
2941                 if (ret == 0) {
2942                         status = QLA_ERROR;
2943                         goto out_match;
2944                 }
2945                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
2946         } else {
2947                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2948                                '\0', NULL);
2949                 if (ret == 0) {
2950                         status = QLA_ERROR;
2951                         goto out_match;
2952                 }
2953                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
2954         }
2955
2956         if (strcmp(existing_ipaddr, formatted_ipaddr))
2957                 status = QLA_ERROR;
2958
2959 out_match:
2960         return status;
2961 }
2962
2963 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
2964                                       struct iscsi_cls_conn *cls_conn)
2965 {
2966         int idx = 0, max_ddbs, rval;
2967         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
2968         struct iscsi_session *sess, *existing_sess;
2969         struct iscsi_conn *conn, *existing_conn;
2970         struct ddb_entry *ddb_entry;
2971
2972         sess = cls_sess->dd_data;
2973         conn = cls_conn->dd_data;
2974
2975         if (sess->targetname == NULL ||
2976             conn->persistent_address == NULL ||
2977             conn->persistent_port == 0)
2978                 return QLA_ERROR;
2979
2980         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
2981                                      MAX_DEV_DB_ENTRIES;
2982
2983         for (idx = 0; idx < max_ddbs; idx++) {
2984                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
2985                 if (ddb_entry == NULL)
2986                         continue;
2987
2988                 if (ddb_entry->ddb_type != FLASH_DDB)
2989                         continue;
2990
2991                 existing_sess = ddb_entry->sess->dd_data;
2992                 existing_conn = ddb_entry->conn->dd_data;
2993
2994                 if (existing_sess->targetname == NULL ||
2995                     existing_conn->persistent_address == NULL ||
2996                     existing_conn->persistent_port == 0)
2997                         continue;
2998
2999                 DEBUG2(ql4_printk(KERN_INFO, ha,
3000                                   "IQN = %s User IQN = %s\n",
3001                                   existing_sess->targetname,
3002                                   sess->targetname));
3003
3004                 DEBUG2(ql4_printk(KERN_INFO, ha,
3005                                   "IP = %s User IP = %s\n",
3006                                   existing_conn->persistent_address,
3007                                   conn->persistent_address));
3008
3009                 DEBUG2(ql4_printk(KERN_INFO, ha,
3010                                   "Port = %d User Port = %d\n",
3011                                   existing_conn->persistent_port,
3012                                   conn->persistent_port));
3013
3014                 if (strcmp(existing_sess->targetname, sess->targetname))
3015                         continue;
3016                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
3017                                         existing_conn->persistent_address,
3018                                         conn->persistent_address);
3019                 if (rval == QLA_ERROR)
3020                         continue;
3021                 if (existing_conn->persistent_port != conn->persistent_port)
3022                         continue;
3023                 break;
3024         }
3025
3026         if (idx == max_ddbs)
3027                 return QLA_ERROR;
3028
3029         DEBUG2(ql4_printk(KERN_INFO, ha,
3030                           "Match found in fwdb sessions\n"));
3031         return QLA_SUCCESS;
3032 }
3033
3034 static struct iscsi_cls_session *
3035 qla4xxx_session_create(struct iscsi_endpoint *ep,
3036                         uint16_t cmds_max, uint16_t qdepth,
3037                         uint32_t initial_cmdsn)
3038 {
3039         struct iscsi_cls_session *cls_sess;
3040         struct scsi_qla_host *ha;
3041         struct qla_endpoint *qla_ep;
3042         struct ddb_entry *ddb_entry;
3043         uint16_t ddb_index;
3044         struct iscsi_session *sess;
3045         struct sockaddr *dst_addr;
3046         int ret;
3047
3048         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
3049         if (!ep) {
3050                 printk(KERN_ERR "qla4xxx: missing ep.\n");
3051                 return NULL;
3052         }
3053
3054         qla_ep = ep->dd_data;
3055         dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
3056         ha = to_qla_host(qla_ep->host);
3057
3058         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
3059         if (ret == QLA_ERROR)
3060                 return NULL;
3061
3062         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
3063                                        cmds_max, sizeof(struct ddb_entry),
3064                                        sizeof(struct ql4_task_data),
3065                                        initial_cmdsn, ddb_index);
3066         if (!cls_sess)
3067                 return NULL;
3068
3069         sess = cls_sess->dd_data;
3070         ddb_entry = sess->dd_data;
3071         ddb_entry->fw_ddb_index = ddb_index;
3072         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
3073         ddb_entry->ha = ha;
3074         ddb_entry->sess = cls_sess;
3075         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
3076         ddb_entry->ddb_change = qla4xxx_ddb_change;
3077         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
3078         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
3079         ha->tot_ddbs++;
3080
3081         return cls_sess;
3082 }
3083
3084 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
3085 {
3086         struct iscsi_session *sess;
3087         struct ddb_entry *ddb_entry;
3088         struct scsi_qla_host *ha;
3089         unsigned long flags, wtime;
3090         struct dev_db_entry *fw_ddb_entry = NULL;
3091         dma_addr_t fw_ddb_entry_dma;
3092         uint32_t ddb_state;
3093         int ret;
3094
3095         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
3096         sess = cls_sess->dd_data;
3097         ddb_entry = sess->dd_data;
3098         ha = ddb_entry->ha;
3099
3100         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3101                                           &fw_ddb_entry_dma, GFP_KERNEL);
3102         if (!fw_ddb_entry) {
3103                 ql4_printk(KERN_ERR, ha,
3104                            "%s: Unable to allocate dma buffer\n", __func__);
3105                 goto destroy_session;
3106         }
3107
3108         wtime = jiffies + (HZ * LOGOUT_TOV);
3109         do {
3110                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
3111                                               fw_ddb_entry, fw_ddb_entry_dma,
3112                                               NULL, NULL, &ddb_state, NULL,
3113                                               NULL, NULL);
3114                 if (ret == QLA_ERROR)
3115                         goto destroy_session;
3116
3117                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
3118                     (ddb_state == DDB_DS_SESSION_FAILED))
3119                         goto destroy_session;
3120
3121                 schedule_timeout_uninterruptible(HZ);
3122         } while ((time_after(wtime, jiffies)));
3123
3124 destroy_session:
3125         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
3126
3127         spin_lock_irqsave(&ha->hardware_lock, flags);
3128         qla4xxx_free_ddb(ha, ddb_entry);
3129         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3130
3131         iscsi_session_teardown(cls_sess);
3132
3133         if (fw_ddb_entry)
3134                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3135                                   fw_ddb_entry, fw_ddb_entry_dma);
3136 }
3137
3138 static struct iscsi_cls_conn *
3139 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
3140 {
3141         struct iscsi_cls_conn *cls_conn;
3142         struct iscsi_session *sess;
3143         struct ddb_entry *ddb_entry;
3144
3145         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
3146         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
3147                                     conn_idx);
3148         if (!cls_conn)
3149                 return NULL;
3150
3151         sess = cls_sess->dd_data;
3152         ddb_entry = sess->dd_data;
3153         ddb_entry->conn = cls_conn;
3154
3155         return cls_conn;
3156 }
3157
3158 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
3159                              struct iscsi_cls_conn *cls_conn,
3160                              uint64_t transport_fd, int is_leading)
3161 {
3162         struct iscsi_conn *conn;
3163         struct qla_conn *qla_conn;
3164         struct iscsi_endpoint *ep;
3165
3166         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
3167
3168         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
3169                 return -EINVAL;
3170         ep = iscsi_lookup_endpoint(transport_fd);
3171         conn = cls_conn->dd_data;
3172         qla_conn = conn->dd_data;
3173         qla_conn->qla_ep = ep->dd_data;
3174         return 0;
3175 }
3176
3177 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
3178 {
3179         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3180         struct iscsi_session *sess;
3181         struct ddb_entry *ddb_entry;
3182         struct scsi_qla_host *ha;
3183         struct dev_db_entry *fw_ddb_entry = NULL;
3184         dma_addr_t fw_ddb_entry_dma;
3185         uint32_t mbx_sts = 0;
3186         int ret = 0;
3187         int status = QLA_SUCCESS;
3188
3189         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
3190         sess = cls_sess->dd_data;
3191         ddb_entry = sess->dd_data;
3192         ha = ddb_entry->ha;
3193
3194         /* Check if we have  matching FW DDB, if yes then do not
3195          * login to this target. This could cause target to logout previous
3196          * connection
3197          */
3198         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
3199         if (ret == QLA_SUCCESS) {
3200                 ql4_printk(KERN_INFO, ha,
3201                            "Session already exist in FW.\n");
3202                 ret = -EEXIST;
3203                 goto exit_conn_start;
3204         }
3205
3206         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3207                                           &fw_ddb_entry_dma, GFP_KERNEL);
3208         if (!fw_ddb_entry) {
3209                 ql4_printk(KERN_ERR, ha,
3210                            "%s: Unable to allocate dma buffer\n", __func__);
3211                 ret = -ENOMEM;
3212                 goto exit_conn_start;
3213         }
3214
3215         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
3216         if (ret) {
3217                 /* If iscsid is stopped and started then no need to do
3218                 * set param again since ddb state will be already
3219                 * active and FW does not allow set ddb to an
3220                 * active session.
3221                 */
3222                 if (mbx_sts)
3223                         if (ddb_entry->fw_ddb_device_state ==
3224                                                 DDB_DS_SESSION_ACTIVE) {
3225                                 ddb_entry->unblock_sess(ddb_entry->sess);
3226                                 goto exit_set_param;
3227                         }
3228
3229                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
3230                            __func__, ddb_entry->fw_ddb_index);
3231                 goto exit_conn_start;
3232         }
3233
3234         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
3235         if (status == QLA_ERROR) {
3236                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
3237                            sess->targetname);
3238                 ret = -EINVAL;
3239                 goto exit_conn_start;
3240         }
3241
3242         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
3243                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
3244
3245         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
3246                       ddb_entry->fw_ddb_device_state));
3247
3248 exit_set_param:
3249         ret = 0;
3250
3251 exit_conn_start:
3252         if (fw_ddb_entry)
3253                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3254                                   fw_ddb_entry, fw_ddb_entry_dma);
3255         return ret;
3256 }
3257
3258 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
3259 {
3260         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3261         struct iscsi_session *sess;
3262         struct scsi_qla_host *ha;
3263         struct ddb_entry *ddb_entry;
3264         int options;
3265
3266         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
3267         sess = cls_sess->dd_data;
3268         ddb_entry = sess->dd_data;
3269         ha = ddb_entry->ha;
3270
3271         options = LOGOUT_OPTION_CLOSE_SESSION;
3272         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
3273                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
3274 }
3275
3276 static void qla4xxx_task_work(struct work_struct *wdata)
3277 {
3278         struct ql4_task_data *task_data;
3279         struct scsi_qla_host *ha;
3280         struct passthru_status *sts;
3281         struct iscsi_task *task;
3282         struct iscsi_hdr *hdr;
3283         uint8_t *data;
3284         uint32_t data_len;
3285         struct iscsi_conn *conn;
3286         int hdr_len;
3287         itt_t itt;
3288
3289         task_data = container_of(wdata, struct ql4_task_data, task_work);
3290         ha = task_data->ha;
3291         task = task_data->task;
3292         sts = &task_data->sts;
3293         hdr_len = sizeof(struct iscsi_hdr);
3294
3295         DEBUG3(printk(KERN_INFO "Status returned\n"));
3296         DEBUG3(qla4xxx_dump_buffer(sts, 64));
3297         DEBUG3(printk(KERN_INFO "Response buffer"));
3298         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
3299
3300         conn = task->conn;
3301
3302         switch (sts->completionStatus) {
3303         case PASSTHRU_STATUS_COMPLETE:
3304                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
3305                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
3306                 itt = sts->handle;
3307                 hdr->itt = itt;
3308                 data = task_data->resp_buffer + hdr_len;
3309                 data_len = task_data->resp_len - hdr_len;
3310                 iscsi_complete_pdu(conn, hdr, data, data_len);
3311                 break;
3312         default:
3313                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
3314                            sts->completionStatus);
3315                 break;
3316         }
3317         return;
3318 }
3319
3320 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
3321 {
3322         struct ql4_task_data *task_data;
3323         struct iscsi_session *sess;
3324         struct ddb_entry *ddb_entry;
3325         struct scsi_qla_host *ha;
3326         int hdr_len;
3327
3328         sess = task->conn->session;
3329         ddb_entry = sess->dd_data;
3330         ha = ddb_entry->ha;
3331         task_data = task->dd_data;
3332         memset(task_data, 0, sizeof(struct ql4_task_data));
3333
3334         if (task->sc) {
3335                 ql4_printk(KERN_INFO, ha,
3336                            "%s: SCSI Commands not implemented\n", __func__);
3337                 return -EINVAL;
3338         }
3339
3340         hdr_len = sizeof(struct iscsi_hdr);
3341         task_data->ha = ha;
3342         task_data->task = task;
3343
3344         if (task->data_count) {
3345                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
3346                                                      task->data_count,
3347                                                      PCI_DMA_TODEVICE);
3348         }
3349
3350         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3351                       __func__, task->conn->max_recv_dlength, hdr_len));
3352
3353         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
3354         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
3355                                                     task_data->resp_len,
3356                                                     &task_data->resp_dma,
3357                                                     GFP_ATOMIC);
3358         if (!task_data->resp_buffer)
3359                 goto exit_alloc_pdu;
3360
3361         task_data->req_len = task->data_count + hdr_len;
3362         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
3363                                                    task_data->req_len,
3364                                                    &task_data->req_dma,
3365                                                    GFP_ATOMIC);
3366         if (!task_data->req_buffer)
3367                 goto exit_alloc_pdu;
3368
3369         task->hdr = task_data->req_buffer;
3370
3371         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
3372
3373         return 0;
3374
3375 exit_alloc_pdu:
3376         if (task_data->resp_buffer)
3377                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3378                                   task_data->resp_buffer, task_data->resp_dma);
3379
3380         if (task_data->req_buffer)
3381                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3382                                   task_data->req_buffer, task_data->req_dma);
3383         return -ENOMEM;
3384 }
3385
3386 static void qla4xxx_task_cleanup(struct iscsi_task *task)
3387 {
3388         struct ql4_task_data *task_data;
3389         struct iscsi_session *sess;
3390         struct ddb_entry *ddb_entry;
3391         struct scsi_qla_host *ha;
3392         int hdr_len;
3393
3394         hdr_len = sizeof(struct iscsi_hdr);
3395         sess = task->conn->session;
3396         ddb_entry = sess->dd_data;
3397         ha = ddb_entry->ha;
3398         task_data = task->dd_data;
3399
3400         if (task->data_count) {
3401                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
3402                                  task->data_count, PCI_DMA_TODEVICE);
3403         }
3404
3405         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3406                       __func__, task->conn->max_recv_dlength, hdr_len));
3407
3408         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3409                           task_data->resp_buffer, task_data->resp_dma);
3410         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3411                           task_data->req_buffer, task_data->req_dma);
3412         return;
3413 }
3414
3415 static int qla4xxx_task_xmit(struct iscsi_task *task)
3416 {
3417         struct scsi_cmnd *sc = task->sc;
3418         struct iscsi_session *sess = task->conn->session;
3419         struct ddb_entry *ddb_entry = sess->dd_data;
3420         struct scsi_qla_host *ha = ddb_entry->ha;
3421
3422         if (!sc)
3423                 return qla4xxx_send_passthru0(task);
3424
3425         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
3426                    __func__);
3427         return -ENOSYS;
3428 }
3429
3430 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
3431                                          struct iscsi_bus_flash_conn *conn,
3432                                          struct dev_db_entry *fw_ddb_entry)
3433 {
3434         unsigned long options = 0;
3435         int rc = 0;
3436
3437         options = le16_to_cpu(fw_ddb_entry->options);
3438         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3439         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3440                 rc = iscsi_switch_str_param(&sess->portal_type,
3441                                             PORTAL_TYPE_IPV6);
3442                 if (rc)
3443                         goto exit_copy;
3444         } else {
3445                 rc = iscsi_switch_str_param(&sess->portal_type,
3446                                             PORTAL_TYPE_IPV4);
3447                 if (rc)
3448                         goto exit_copy;
3449         }
3450
3451         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3452                                               &options);
3453         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3454         sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
3455
3456         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3457         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3458         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3459         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3460         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3461         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3462                                             &options);
3463         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3464         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3465         conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
3466         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3467                                              &options);
3468         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3469         sess->discovery_auth_optional =
3470                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3471         if (test_bit(ISCSIOPT_ERL1, &options))
3472                 sess->erl |= BIT_1;
3473         if (test_bit(ISCSIOPT_ERL0, &options))
3474                 sess->erl |= BIT_0;
3475
3476         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3477         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3478         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3479         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3480         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3481                 conn->tcp_timer_scale |= BIT_3;
3482         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3483                 conn->tcp_timer_scale |= BIT_2;
3484         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3485                 conn->tcp_timer_scale |= BIT_1;
3486
3487         conn->tcp_timer_scale >>= 1;
3488         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3489
3490         options = le16_to_cpu(fw_ddb_entry->ip_options);
3491         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3492
3493         conn->max_recv_dlength = BYTE_UNITS *
3494                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3495         conn->max_xmit_dlength = BYTE_UNITS *
3496                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3497         sess->first_burst = BYTE_UNITS *
3498                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3499         sess->max_burst = BYTE_UNITS *
3500                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3501         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3502         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3503         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3504         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3505         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3506         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3507         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3508         conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
3509         conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
3510         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3511         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3512         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3513         sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
3514         sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
3515         sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3516         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3517
3518         sess->default_taskmgmt_timeout =
3519                                 le16_to_cpu(fw_ddb_entry->def_timeout);
3520         conn->port = le16_to_cpu(fw_ddb_entry->port);
3521
3522         options = le16_to_cpu(fw_ddb_entry->options);
3523         conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3524         if (!conn->ipaddress) {
3525                 rc = -ENOMEM;
3526                 goto exit_copy;
3527         }
3528
3529         conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3530         if (!conn->redirect_ipaddr) {
3531                 rc = -ENOMEM;
3532                 goto exit_copy;
3533         }
3534
3535         memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
3536         memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
3537
3538         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3539                 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
3540
3541                 conn->link_local_ipv6_addr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3542                 if (!conn->link_local_ipv6_addr) {
3543                         rc = -ENOMEM;
3544                         goto exit_copy;
3545                 }
3546
3547                 memcpy(conn->link_local_ipv6_addr,
3548                        fw_ddb_entry->link_local_ipv6_addr, IPv6_ADDR_LEN);
3549         } else {
3550                 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3551         }
3552
3553         if (fw_ddb_entry->iscsi_name[0]) {
3554                 rc = iscsi_switch_str_param(&sess->targetname,
3555                                             (char *)fw_ddb_entry->iscsi_name);
3556                 if (rc)
3557                         goto exit_copy;
3558         }
3559
3560         if (fw_ddb_entry->iscsi_alias[0]) {
3561                 rc = iscsi_switch_str_param(&sess->targetalias,
3562                                             (char *)fw_ddb_entry->iscsi_alias);
3563                 if (rc)
3564                         goto exit_copy;
3565         }
3566
3567         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3568
3569 exit_copy:
3570         return rc;
3571 }
3572
3573 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
3574                                        struct iscsi_bus_flash_conn *conn,
3575                                        struct dev_db_entry *fw_ddb_entry)
3576 {
3577         uint16_t options;
3578         int rc = 0;
3579
3580         options = le16_to_cpu(fw_ddb_entry->options);
3581         SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
3582         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3583                 options |= BIT_8;
3584         else
3585                 options &= ~BIT_8;
3586
3587         SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
3588         SET_BITVAL(sess->discovery_sess, options, BIT_4);
3589         SET_BITVAL(sess->entry_state, options, BIT_3);
3590         fw_ddb_entry->options = cpu_to_le16(options);
3591
3592         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3593         SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
3594         SET_BITVAL(conn->datadgst_en, options, BIT_12);
3595         SET_BITVAL(sess->imm_data_en, options, BIT_11);
3596         SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
3597         SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
3598         SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
3599         SET_BITVAL(sess->chap_auth_en, options, BIT_7);
3600         SET_BITVAL(conn->snack_req_en, options, BIT_6);
3601         SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
3602         SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
3603         SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
3604         SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
3605         SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
3606         fw_ddb_entry->iscsi_options = cpu_to_le16(options);
3607
3608         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3609         SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
3610         SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
3611         SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
3612         SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
3613         SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
3614         SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
3615         SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
3616         fw_ddb_entry->tcp_options = cpu_to_le16(options);
3617
3618         options = le16_to_cpu(fw_ddb_entry->ip_options);
3619         SET_BITVAL(conn->fragment_disable, options, BIT_4);
3620         fw_ddb_entry->ip_options = cpu_to_le16(options);
3621
3622         fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
3623         fw_ddb_entry->iscsi_max_rcv_data_seg_len =
3624                                cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
3625         fw_ddb_entry->iscsi_max_snd_data_seg_len =
3626                                cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
3627         fw_ddb_entry->iscsi_first_burst_len =
3628                                 cpu_to_le16(sess->first_burst / BYTE_UNITS);
3629         fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
3630                                             BYTE_UNITS);
3631         fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
3632         fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
3633         fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
3634         fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
3635         fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
3636         fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
3637         fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
3638         fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
3639         fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
3640         fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
3641         fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
3642         fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
3643         fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
3644         fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
3645         fw_ddb_entry->port = cpu_to_le16(conn->port);
3646         fw_ddb_entry->def_timeout =
3647                                 cpu_to_le16(sess->default_taskmgmt_timeout);
3648
3649         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3650                 fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
3651         else
3652                 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
3653
3654         if (conn->ipaddress)
3655                 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
3656                        sizeof(fw_ddb_entry->ip_addr));
3657
3658         if (conn->redirect_ipaddr)
3659                 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
3660                        sizeof(fw_ddb_entry->tgt_addr));
3661
3662         if (conn->link_local_ipv6_addr)
3663                 memcpy(fw_ddb_entry->link_local_ipv6_addr,
3664                        conn->link_local_ipv6_addr,
3665                        sizeof(fw_ddb_entry->link_local_ipv6_addr));
3666
3667         if (sess->targetname)
3668                 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
3669                        sizeof(fw_ddb_entry->iscsi_name));
3670
3671         if (sess->targetalias)
3672                 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
3673                        sizeof(fw_ddb_entry->iscsi_alias));
3674
3675         COPY_ISID(fw_ddb_entry->isid, sess->isid);
3676
3677         return rc;
3678 }
3679
3680 static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
3681                                              struct iscsi_session *sess,
3682                                              struct dev_db_entry *fw_ddb_entry)
3683 {
3684         unsigned long options = 0;
3685         uint16_t ddb_link;
3686         uint16_t disc_parent;
3687         char ip_addr[DDB_IPADDR_LEN];
3688
3689         options = le16_to_cpu(fw_ddb_entry->options);
3690         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3691         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3692                                               &options);
3693         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3694
3695         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3696         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3697         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3698         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3699         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3700         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3701                                             &options);
3702         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3703         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3704         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3705                                              &options);
3706         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3707         sess->discovery_auth_optional =
3708                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3709         if (test_bit(ISCSIOPT_ERL1, &options))
3710                 sess->erl |= BIT_1;
3711         if (test_bit(ISCSIOPT_ERL0, &options))
3712                 sess->erl |= BIT_0;
3713
3714         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3715         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3716         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3717         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3718         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3719                 conn->tcp_timer_scale |= BIT_3;
3720         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3721                 conn->tcp_timer_scale |= BIT_2;
3722         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3723                 conn->tcp_timer_scale |= BIT_1;
3724
3725         conn->tcp_timer_scale >>= 1;
3726         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3727
3728         options = le16_to_cpu(fw_ddb_entry->ip_options);
3729         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3730
3731         conn->max_recv_dlength = BYTE_UNITS *
3732                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3733         conn->max_xmit_dlength = BYTE_UNITS *
3734                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3735         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3736         sess->first_burst = BYTE_UNITS *
3737                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3738         sess->max_burst = BYTE_UNITS *
3739                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3740         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3741         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3742         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3743         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3744         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3745         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3746         conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3747         conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
3748         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3749         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3750         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3751         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3752         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3753
3754         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
3755         if (ddb_link == DDB_ISNS)
3756                 disc_parent = ISCSI_DISC_PARENT_ISNS;
3757         else if (ddb_link == DDB_NO_LINK)
3758                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3759         else if (ddb_link < MAX_DDB_ENTRIES)
3760                 disc_parent = ISCSI_DISC_PARENT_SENDTGT;
3761         else
3762                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3763
3764         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
3765                         iscsi_get_discovery_parent_name(disc_parent), 0);
3766
3767         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
3768                         (char *)fw_ddb_entry->iscsi_alias, 0);
3769
3770         options = le16_to_cpu(fw_ddb_entry->options);
3771         if (options & DDB_OPT_IPV6_DEVICE) {
3772                 memset(ip_addr, 0, sizeof(ip_addr));
3773                 sprintf(ip_addr, "%pI6", fw_ddb_entry->link_local_ipv6_addr);
3774                 iscsi_set_param(conn->cls_conn, ISCSI_PARAM_LOCAL_IPADDR,
3775                                 (char *)ip_addr, 0);
3776         }
3777 }
3778
3779 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
3780                                      struct dev_db_entry *fw_ddb_entry,
3781                                      struct iscsi_cls_session *cls_sess,
3782                                      struct iscsi_cls_conn *cls_conn)
3783 {
3784         int buflen = 0;
3785         struct iscsi_session *sess;
3786         struct ddb_entry *ddb_entry;
3787         struct ql4_chap_table chap_tbl;
3788         struct iscsi_conn *conn;
3789         char ip_addr[DDB_IPADDR_LEN];
3790         uint16_t options = 0;
3791
3792         sess = cls_sess->dd_data;
3793         ddb_entry = sess->dd_data;
3794         conn = cls_conn->dd_data;
3795         memset(&chap_tbl, 0, sizeof(chap_tbl));
3796
3797         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3798
3799         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3800
3801         sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
3802         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
3803
3804         memset(ip_addr, 0, sizeof(ip_addr));
3805         options = le16_to_cpu(fw_ddb_entry->options);
3806         if (options & DDB_OPT_IPV6_DEVICE) {
3807                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
3808
3809                 memset(ip_addr, 0, sizeof(ip_addr));
3810                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3811         } else {
3812                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
3813                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3814         }
3815
3816         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
3817                         (char *)ip_addr, buflen);
3818         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
3819                         (char *)fw_ddb_entry->iscsi_name, buflen);
3820         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
3821                         (char *)ha->name_string, buflen);
3822
3823         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
3824                 if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
3825                                                    chap_tbl.secret,
3826                                                    ddb_entry->chap_tbl_idx)) {
3827                         iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
3828                                         (char *)chap_tbl.name,
3829                                         strlen((char *)chap_tbl.name));
3830                         iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
3831                                         (char *)chap_tbl.secret,
3832                                         chap_tbl.secret_len);
3833                 }
3834         }
3835 }
3836
3837 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
3838                                              struct ddb_entry *ddb_entry)
3839 {
3840         struct iscsi_cls_session *cls_sess;
3841         struct iscsi_cls_conn *cls_conn;
3842         uint32_t ddb_state;
3843         dma_addr_t fw_ddb_entry_dma;
3844         struct dev_db_entry *fw_ddb_entry;
3845
3846         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3847                                           &fw_ddb_entry_dma, GFP_KERNEL);
3848         if (!fw_ddb_entry) {
3849                 ql4_printk(KERN_ERR, ha,
3850                            "%s: Unable to allocate dma buffer\n", __func__);
3851                 goto exit_session_conn_fwddb_param;
3852         }
3853
3854         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3855                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3856                                     NULL, NULL, NULL) == QLA_ERROR) {
3857                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3858                                   "get_ddb_entry for fw_ddb_index %d\n",
3859                                   ha->host_no, __func__,
3860                                   ddb_entry->fw_ddb_index));
3861                 goto exit_session_conn_fwddb_param;
3862         }
3863
3864         cls_sess = ddb_entry->sess;
3865
3866         cls_conn = ddb_entry->conn;
3867
3868         /* Update params */
3869         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
3870
3871 exit_session_conn_fwddb_param:
3872         if (fw_ddb_entry)
3873                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3874                                   fw_ddb_entry, fw_ddb_entry_dma);
3875 }
3876
3877 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
3878                                        struct ddb_entry *ddb_entry)
3879 {
3880         struct iscsi_cls_session *cls_sess;
3881         struct iscsi_cls_conn *cls_conn;
3882         struct iscsi_session *sess;
3883         struct iscsi_conn *conn;
3884         uint32_t ddb_state;
3885         dma_addr_t fw_ddb_entry_dma;
3886         struct dev_db_entry *fw_ddb_entry;
3887
3888         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3889                                           &fw_ddb_entry_dma, GFP_KERNEL);
3890         if (!fw_ddb_entry) {
3891                 ql4_printk(KERN_ERR, ha,
3892                            "%s: Unable to allocate dma buffer\n", __func__);
3893                 goto exit_session_conn_param;
3894         }
3895
3896         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3897                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3898                                     NULL, NULL, NULL) == QLA_ERROR) {
3899                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3900                                   "get_ddb_entry for fw_ddb_index %d\n",
3901                                   ha->host_no, __func__,
3902                                   ddb_entry->fw_ddb_index));
3903                 goto exit_session_conn_param;
3904         }
3905
3906         cls_sess = ddb_entry->sess;
3907         sess = cls_sess->dd_data;
3908
3909         cls_conn = ddb_entry->conn;
3910         conn = cls_conn->dd_data;
3911
3912         /* Update timers after login */
3913         ddb_entry->default_relogin_timeout =
3914                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
3915                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
3916                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
3917         ddb_entry->default_time2wait =
3918                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3919
3920         /* Update params */
3921         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3922         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3923
3924         memcpy(sess->initiatorname, ha->name_string,
3925                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
3926
3927 exit_session_conn_param:
3928         if (fw_ddb_entry)
3929                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3930                                   fw_ddb_entry, fw_ddb_entry_dma);
3931 }
3932
3933 /*
3934  * Timer routines
3935  */
3936
3937 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
3938                                 unsigned long interval)
3939 {
3940         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
3941                      __func__, ha->host->host_no));
3942         init_timer(&ha->timer);
3943         ha->timer.expires = jiffies + interval * HZ;
3944         ha->timer.data = (unsigned long)ha;
3945         ha->timer.function = (void (*)(unsigned long))func;
3946         add_timer(&ha->timer);
3947         ha->timer_active = 1;
3948 }
3949
3950 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
3951 {
3952         del_timer_sync(&ha->timer);
3953         ha->timer_active = 0;
3954 }
3955
3956 /***
3957  * qla4xxx_mark_device_missing - blocks the session
3958  * @cls_session: Pointer to the session to be blocked
3959  * @ddb_entry: Pointer to device database entry
3960  *
3961  * This routine marks a device missing and close connection.
3962  **/
3963 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
3964 {
3965         iscsi_block_session(cls_session);
3966 }
3967
3968 /**
3969  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
3970  * @ha: Pointer to host adapter structure.
3971  *
3972  * This routine marks a device missing and resets the relogin retry count.
3973  **/
3974 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
3975 {
3976         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
3977 }
3978
3979 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
3980                                        struct ddb_entry *ddb_entry,
3981                                        struct scsi_cmnd *cmd)
3982 {
3983         struct srb *srb;
3984
3985         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
3986         if (!srb)
3987                 return srb;
3988
3989         kref_init(&srb->srb_ref);
3990         srb->ha = ha;
3991         srb->ddb = ddb_entry;
3992         srb->cmd = cmd;
3993         srb->flags = 0;
3994         CMD_SP(cmd) = (void *)srb;
3995
3996         return srb;
3997 }
3998
3999 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
4000 {
4001         struct scsi_cmnd *cmd = srb->cmd;
4002
4003         if (srb->flags & SRB_DMA_VALID) {
4004                 scsi_dma_unmap(cmd);
4005                 srb->flags &= ~SRB_DMA_VALID;
4006         }
4007         CMD_SP(cmd) = NULL;
4008 }
4009
4010 void qla4xxx_srb_compl(struct kref *ref)
4011 {
4012         struct srb *srb = container_of(ref, struct srb, srb_ref);
4013         struct scsi_cmnd *cmd = srb->cmd;
4014         struct scsi_qla_host *ha = srb->ha;
4015
4016         qla4xxx_srb_free_dma(ha, srb);
4017
4018         mempool_free(srb, ha->srb_mempool);
4019
4020         cmd->scsi_done(cmd);
4021 }
4022
4023 /**
4024  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
4025  * @host: scsi host
4026  * @cmd: Pointer to Linux's SCSI command structure
4027  *
4028  * Remarks:
4029  * This routine is invoked by Linux to send a SCSI command to the driver.
4030  * The mid-level driver tries to ensure that queuecommand never gets
4031  * invoked concurrently with itself or the interrupt handler (although
4032  * the interrupt handler may call this routine as part of request-
4033  * completion handling).   Unfortunely, it sometimes calls the scheduler
4034  * in interrupt context which is a big NO! NO!.
4035  **/
4036 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
4037 {
4038         struct scsi_qla_host *ha = to_qla_host(host);
4039         struct ddb_entry *ddb_entry = cmd->device->hostdata;
4040         struct iscsi_cls_session *sess = ddb_entry->sess;
4041         struct srb *srb;
4042         int rval;
4043
4044         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4045                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
4046                         cmd->result = DID_NO_CONNECT << 16;
4047                 else
4048                         cmd->result = DID_REQUEUE << 16;
4049                 goto qc_fail_command;
4050         }
4051
4052         if (!sess) {
4053                 cmd->result = DID_IMM_RETRY << 16;
4054                 goto qc_fail_command;
4055         }
4056
4057         rval = iscsi_session_chkready(sess);
4058         if (rval) {
4059                 cmd->result = rval;
4060                 goto qc_fail_command;
4061         }
4062
4063         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4064             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4065             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4066             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4067             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4068             !test_bit(AF_ONLINE, &ha->flags) ||
4069             !test_bit(AF_LINK_UP, &ha->flags) ||
4070             test_bit(AF_LOOPBACK, &ha->flags) ||
4071             test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
4072             test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
4073             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
4074                 goto qc_host_busy;
4075
4076         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
4077         if (!srb)
4078                 goto qc_host_busy;
4079
4080         rval = qla4xxx_send_command_to_isp(ha, srb);
4081         if (rval != QLA_SUCCESS)
4082                 goto qc_host_busy_free_sp;
4083
4084         return 0;
4085
4086 qc_host_busy_free_sp:
4087         qla4xxx_srb_free_dma(ha, srb);
4088         mempool_free(srb, ha->srb_mempool);
4089
4090 qc_host_busy:
4091         return SCSI_MLQUEUE_HOST_BUSY;
4092
4093 qc_fail_command:
4094         cmd->scsi_done(cmd);
4095
4096         return 0;
4097 }
4098
4099 /**
4100  * qla4xxx_mem_free - frees memory allocated to adapter
4101  * @ha: Pointer to host adapter structure.
4102  *
4103  * Frees memory previously allocated by qla4xxx_mem_alloc
4104  **/
4105 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
4106 {
4107         if (ha->queues)
4108                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
4109                                   ha->queues_dma);
4110
4111          if (ha->fw_dump)
4112                 vfree(ha->fw_dump);
4113
4114         ha->queues_len = 0;
4115         ha->queues = NULL;
4116         ha->queues_dma = 0;
4117         ha->request_ring = NULL;
4118         ha->request_dma = 0;
4119         ha->response_ring = NULL;
4120         ha->response_dma = 0;
4121         ha->shadow_regs = NULL;
4122         ha->shadow_regs_dma = 0;
4123         ha->fw_dump = NULL;
4124         ha->fw_dump_size = 0;
4125
4126         /* Free srb pool. */
4127         if (ha->srb_mempool)
4128                 mempool_destroy(ha->srb_mempool);
4129
4130         ha->srb_mempool = NULL;
4131
4132         if (ha->chap_dma_pool)
4133                 dma_pool_destroy(ha->chap_dma_pool);
4134
4135         if (ha->chap_list)
4136                 vfree(ha->chap_list);
4137         ha->chap_list = NULL;
4138
4139         if (ha->fw_ddb_dma_pool)
4140                 dma_pool_destroy(ha->fw_ddb_dma_pool);
4141
4142         /* release io space registers  */
4143         if (is_qla8022(ha)) {
4144                 if (ha->nx_pcibase)
4145                         iounmap(
4146                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
4147         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4148                 if (ha->nx_pcibase)
4149                         iounmap(
4150                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
4151         } else if (ha->reg) {
4152                 iounmap(ha->reg);
4153         }
4154
4155         if (ha->reset_tmplt.buff)
4156                 vfree(ha->reset_tmplt.buff);
4157
4158         pci_release_regions(ha->pdev);
4159 }
4160
4161 /**
4162  * qla4xxx_mem_alloc - allocates memory for use by adapter.
4163  * @ha: Pointer to host adapter structure
4164  *
4165  * Allocates DMA memory for request and response queues. Also allocates memory
4166  * for srbs.
4167  **/
4168 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
4169 {
4170         unsigned long align;
4171
4172         /* Allocate contiguous block of DMA memory for queues. */
4173         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4174                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
4175                           sizeof(struct shadow_regs) +
4176                           MEM_ALIGN_VALUE +
4177                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
4178         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
4179                                         &ha->queues_dma, GFP_KERNEL);
4180         if (ha->queues == NULL) {
4181                 ql4_printk(KERN_WARNING, ha,
4182                     "Memory Allocation failed - queues.\n");
4183
4184                 goto mem_alloc_error_exit;
4185         }
4186         memset(ha->queues, 0, ha->queues_len);
4187
4188         /*
4189          * As per RISC alignment requirements -- the bus-address must be a
4190          * multiple of the request-ring size (in bytes).
4191          */
4192         align = 0;
4193         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
4194                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
4195                                            (MEM_ALIGN_VALUE - 1));
4196
4197         /* Update request and response queue pointers. */
4198         ha->request_dma = ha->queues_dma + align;
4199         ha->request_ring = (struct queue_entry *) (ha->queues + align);
4200         ha->response_dma = ha->queues_dma + align +
4201                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
4202         ha->response_ring = (struct queue_entry *) (ha->queues + align +
4203                                                     (REQUEST_QUEUE_DEPTH *
4204                                                      QUEUE_SIZE));
4205         ha->shadow_regs_dma = ha->queues_dma + align +
4206                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4207                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
4208         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
4209                                                   (REQUEST_QUEUE_DEPTH *
4210                                                    QUEUE_SIZE) +
4211                                                   (RESPONSE_QUEUE_DEPTH *
4212                                                    QUEUE_SIZE));
4213
4214         /* Allocate memory for srb pool. */
4215         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
4216                                          mempool_free_slab, srb_cachep);
4217         if (ha->srb_mempool == NULL) {
4218                 ql4_printk(KERN_WARNING, ha,
4219                     "Memory Allocation failed - SRB Pool.\n");
4220
4221                 goto mem_alloc_error_exit;
4222         }
4223
4224         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
4225                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
4226
4227         if (ha->chap_dma_pool == NULL) {
4228                 ql4_printk(KERN_WARNING, ha,
4229                     "%s: chap_dma_pool allocation failed..\n", __func__);
4230                 goto mem_alloc_error_exit;
4231         }
4232
4233         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
4234                                               DDB_DMA_BLOCK_SIZE, 8, 0);
4235
4236         if (ha->fw_ddb_dma_pool == NULL) {
4237                 ql4_printk(KERN_WARNING, ha,
4238                            "%s: fw_ddb_dma_pool allocation failed..\n",
4239                            __func__);
4240                 goto mem_alloc_error_exit;
4241         }
4242
4243         return QLA_SUCCESS;
4244
4245 mem_alloc_error_exit:
4246         qla4xxx_mem_free(ha);
4247         return QLA_ERROR;
4248 }
4249
4250 /**
4251  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
4252  * @ha: adapter block pointer.
4253  *
4254  * Note: The caller should not hold the idc lock.
4255  **/
4256 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
4257 {
4258         uint32_t temp, temp_state, temp_val;
4259         int status = QLA_SUCCESS;
4260
4261         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
4262
4263         temp_state = qla82xx_get_temp_state(temp);
4264         temp_val = qla82xx_get_temp_val(temp);
4265
4266         if (temp_state == QLA82XX_TEMP_PANIC) {
4267                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
4268                            " exceeds maximum allowed. Hardware has been shut"
4269                            " down.\n", temp_val);
4270                 status = QLA_ERROR;
4271         } else if (temp_state == QLA82XX_TEMP_WARN) {
4272                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
4273                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
4274                                    " degrees C exceeds operating range."
4275                                    " Immediate action needed.\n", temp_val);
4276         } else {
4277                 if (ha->temperature == QLA82XX_TEMP_WARN)
4278                         ql4_printk(KERN_INFO, ha, "Device temperature is"
4279                                    " now %d degrees C in normal range.\n",
4280                                    temp_val);
4281         }
4282         ha->temperature = temp_state;
4283         return status;
4284 }
4285
4286 /**
4287  * qla4_8xxx_check_fw_alive  - Check firmware health
4288  * @ha: Pointer to host adapter structure.
4289  *
4290  * Context: Interrupt
4291  **/
4292 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
4293 {
4294         uint32_t fw_heartbeat_counter;
4295         int status = QLA_SUCCESS;
4296
4297         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
4298                                                    QLA8XXX_PEG_ALIVE_COUNTER);
4299         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
4300         if (fw_heartbeat_counter == 0xffffffff) {
4301                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
4302                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
4303                     ha->host_no, __func__));
4304                 return status;
4305         }
4306
4307         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
4308                 ha->seconds_since_last_heartbeat++;
4309                 /* FW not alive after 2 seconds */
4310                 if (ha->seconds_since_last_heartbeat == 2) {
4311                         ha->seconds_since_last_heartbeat = 0;
4312                         qla4_8xxx_dump_peg_reg(ha);
4313                         status = QLA_ERROR;
4314                 }
4315         } else
4316                 ha->seconds_since_last_heartbeat = 0;
4317
4318         ha->fw_heartbeat_counter = fw_heartbeat_counter;
4319         return status;
4320 }
4321
4322 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
4323 {
4324         uint32_t halt_status;
4325         int halt_status_unrecoverable = 0;
4326
4327         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
4328
4329         if (is_qla8022(ha)) {
4330                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4331                            __func__);
4332                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4333                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4334                                 CRB_NIU_XG_PAUSE_CTL_P1);
4335
4336                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
4337                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
4338                                    __func__);
4339                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
4340                         halt_status_unrecoverable = 1;
4341         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4342                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
4343                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
4344                                    __func__);
4345                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
4346                         halt_status_unrecoverable = 1;
4347         }
4348
4349         /*
4350          * Since we cannot change dev_state in interrupt context,
4351          * set appropriate DPC flag then wakeup DPC
4352          */
4353         if (halt_status_unrecoverable) {
4354                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4355         } else {
4356                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
4357                            __func__);
4358                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4359         }
4360         qla4xxx_mailbox_premature_completion(ha);
4361         qla4xxx_wake_dpc(ha);
4362 }
4363
4364 /**
4365  * qla4_8xxx_watchdog - Poll dev state
4366  * @ha: Pointer to host adapter structure.
4367  *
4368  * Context: Interrupt
4369  **/
4370 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
4371 {
4372         uint32_t dev_state;
4373         uint32_t idc_ctrl;
4374
4375         /* don't poll if reset is going on */
4376         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4377             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4378             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
4379                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
4380
4381                 if (qla4_8xxx_check_temp(ha)) {
4382                         if (is_qla8022(ha)) {
4383                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
4384                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4385                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4386                                                 CRB_NIU_XG_PAUSE_CTL_P1);
4387                         }
4388                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4389                         qla4xxx_wake_dpc(ha);
4390                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
4391                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4392
4393                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
4394                                    __func__);
4395
4396                         if (is_qla8032(ha) || is_qla8042(ha)) {
4397                                 idc_ctrl = qla4_83xx_rd_reg(ha,
4398                                                         QLA83XX_IDC_DRV_CTRL);
4399                                 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
4400                                         ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
4401                                                    __func__);
4402                                         qla4xxx_mailbox_premature_completion(
4403                                                                             ha);
4404                                 }
4405                         }
4406
4407                         if ((is_qla8032(ha) || is_qla8042(ha)) ||
4408                             (is_qla8022(ha) && !ql4xdontresethba)) {
4409                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4410                                 qla4xxx_wake_dpc(ha);
4411                         }
4412                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
4413                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
4414                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
4415                             __func__);
4416                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
4417                         qla4xxx_wake_dpc(ha);
4418                 } else  {
4419                         /* Check firmware health */
4420                         if (qla4_8xxx_check_fw_alive(ha))
4421                                 qla4_8xxx_process_fw_error(ha);
4422                 }
4423         }
4424 }
4425
4426 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
4427 {
4428         struct iscsi_session *sess;
4429         struct ddb_entry *ddb_entry;
4430         struct scsi_qla_host *ha;
4431
4432         sess = cls_sess->dd_data;
4433         ddb_entry = sess->dd_data;
4434         ha = ddb_entry->ha;
4435
4436         if (!(ddb_entry->ddb_type == FLASH_DDB))
4437                 return;
4438
4439         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
4440             !iscsi_is_session_online(cls_sess)) {
4441                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
4442                     INVALID_ENTRY) {
4443                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
4444                                         0) {
4445                                 atomic_set(&ddb_entry->retry_relogin_timer,
4446                                            INVALID_ENTRY);
4447                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4448                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4449                                 DEBUG2(ql4_printk(KERN_INFO, ha,
4450                                        "%s: index [%d] login device\n",
4451                                         __func__, ddb_entry->fw_ddb_index));
4452                         } else
4453                                 atomic_dec(&ddb_entry->retry_relogin_timer);
4454                 }
4455         }
4456
4457         /* Wait for relogin to timeout */
4458         if (atomic_read(&ddb_entry->relogin_timer) &&
4459             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
4460                 /*
4461                  * If the relogin times out and the device is
4462                  * still NOT ONLINE then try and relogin again.
4463                  */
4464                 if (!iscsi_is_session_online(cls_sess)) {
4465                         /* Reset retry relogin timer */
4466                         atomic_inc(&ddb_entry->relogin_retry_count);
4467                         DEBUG2(ql4_printk(KERN_INFO, ha,
4468                                 "%s: index[%d] relogin timed out-retrying"
4469                                 " relogin (%d), retry (%d)\n", __func__,
4470                                 ddb_entry->fw_ddb_index,
4471                                 atomic_read(&ddb_entry->relogin_retry_count),
4472                                 ddb_entry->default_time2wait + 4));
4473                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4474                         atomic_set(&ddb_entry->retry_relogin_timer,
4475                                    ddb_entry->default_time2wait + 4);
4476                 }
4477         }
4478 }
4479
4480 /**
4481  * qla4xxx_timer - checks every second for work to do.
4482  * @ha: Pointer to host adapter structure.
4483  **/
4484 static void qla4xxx_timer(struct scsi_qla_host *ha)
4485 {
4486         int start_dpc = 0;
4487         uint16_t w;
4488
4489         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
4490
4491         /* If we are in the middle of AER/EEH processing
4492          * skip any processing and reschedule the timer
4493          */
4494         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4495                 mod_timer(&ha->timer, jiffies + HZ);
4496                 return;
4497         }
4498
4499         /* Hardware read to trigger an EEH error during mailbox waits. */
4500         if (!pci_channel_offline(ha->pdev))
4501                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
4502
4503         if (is_qla80XX(ha))
4504                 qla4_8xxx_watchdog(ha);
4505
4506         if (is_qla40XX(ha)) {
4507                 /* Check for heartbeat interval. */
4508                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
4509                     ha->heartbeat_interval != 0) {
4510                         ha->seconds_since_last_heartbeat++;
4511                         if (ha->seconds_since_last_heartbeat >
4512                             ha->heartbeat_interval + 2)
4513                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4514                 }
4515         }
4516
4517         /* Process any deferred work. */
4518         if (!list_empty(&ha->work_list))
4519                 start_dpc++;
4520
4521         /* Wakeup the dpc routine for this adapter, if needed. */
4522         if (start_dpc ||
4523              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4524              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
4525              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
4526              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
4527              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4528              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
4529              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
4530              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4531              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4532              test_bit(DPC_AEN, &ha->dpc_flags)) {
4533                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
4534                               " - dpc flags = 0x%lx\n",
4535                               ha->host_no, __func__, ha->dpc_flags));
4536                 qla4xxx_wake_dpc(ha);
4537         }
4538
4539         /* Reschedule timer thread to call us back in one second */
4540         mod_timer(&ha->timer, jiffies + HZ);
4541
4542         DEBUG2(ha->seconds_since_last_intr++);
4543 }
4544
4545 /**
4546  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
4547  * @ha: Pointer to host adapter structure.
4548  *
4549  * This routine stalls the driver until all outstanding commands are returned.
4550  * Caller must release the Hardware Lock prior to calling this routine.
4551  **/
4552 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
4553 {
4554         uint32_t index = 0;
4555         unsigned long flags;
4556         struct scsi_cmnd *cmd;
4557
4558         unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
4559
4560         DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
4561             "complete\n", WAIT_CMD_TOV));
4562
4563         while (!time_after_eq(jiffies, wtime)) {
4564                 spin_lock_irqsave(&ha->hardware_lock, flags);
4565                 /* Find a command that hasn't completed. */
4566                 for (index = 0; index < ha->host->can_queue; index++) {
4567                         cmd = scsi_host_find_tag(ha->host, index);
4568                         /*
4569                          * We cannot just check if the index is valid,
4570                          * becase if we are run from the scsi eh, then
4571                          * the scsi/block layer is going to prevent
4572                          * the tag from being released.
4573                          */
4574                         if (cmd != NULL && CMD_SP(cmd))
4575                                 break;
4576                 }
4577                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4578
4579                 /* If No Commands are pending, wait is complete */
4580                 if (index == ha->host->can_queue)
4581                         return QLA_SUCCESS;
4582
4583                 msleep(1000);
4584         }
4585         /* If we timed out on waiting for commands to come back
4586          * return ERROR. */
4587         return QLA_ERROR;
4588 }
4589
4590 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
4591 {
4592         uint32_t ctrl_status;
4593         unsigned long flags = 0;
4594
4595         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
4596
4597         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
4598                 return QLA_ERROR;
4599
4600         spin_lock_irqsave(&ha->hardware_lock, flags);
4601
4602         /*
4603          * If the SCSI Reset Interrupt bit is set, clear it.
4604          * Otherwise, the Soft Reset won't work.
4605          */
4606         ctrl_status = readw(&ha->reg->ctrl_status);
4607         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
4608                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4609
4610         /* Issue Soft Reset */
4611         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
4612         readl(&ha->reg->ctrl_status);
4613
4614         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4615         return QLA_SUCCESS;
4616 }
4617
4618 /**
4619  * qla4xxx_soft_reset - performs soft reset.
4620  * @ha: Pointer to host adapter structure.
4621  **/
4622 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
4623 {
4624         uint32_t max_wait_time;
4625         unsigned long flags = 0;
4626         int status;
4627         uint32_t ctrl_status;
4628
4629         status = qla4xxx_hw_reset(ha);
4630         if (status != QLA_SUCCESS)
4631                 return status;
4632
4633         status = QLA_ERROR;
4634         /* Wait until the Network Reset Intr bit is cleared */
4635         max_wait_time = RESET_INTR_TOV;
4636         do {
4637                 spin_lock_irqsave(&ha->hardware_lock, flags);
4638                 ctrl_status = readw(&ha->reg->ctrl_status);
4639                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4640
4641                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
4642                         break;
4643
4644                 msleep(1000);
4645         } while ((--max_wait_time));
4646
4647         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
4648                 DEBUG2(printk(KERN_WARNING
4649                               "scsi%ld: Network Reset Intr not cleared by "
4650                               "Network function, clearing it now!\n",
4651                               ha->host_no));
4652                 spin_lock_irqsave(&ha->hardware_lock, flags);
4653                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
4654                 readl(&ha->reg->ctrl_status);
4655                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4656         }
4657
4658         /* Wait until the firmware tells us the Soft Reset is done */
4659         max_wait_time = SOFT_RESET_TOV;
4660         do {
4661                 spin_lock_irqsave(&ha->hardware_lock, flags);
4662                 ctrl_status = readw(&ha->reg->ctrl_status);
4663                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4664
4665                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
4666                         status = QLA_SUCCESS;
4667                         break;
4668                 }
4669
4670                 msleep(1000);
4671         } while ((--max_wait_time));
4672
4673         /*
4674          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
4675          * after the soft reset has taken place.
4676          */
4677         spin_lock_irqsave(&ha->hardware_lock, flags);
4678         ctrl_status = readw(&ha->reg->ctrl_status);
4679         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
4680                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4681                 readl(&ha->reg->ctrl_status);
4682         }
4683         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4684
4685         /* If soft reset fails then most probably the bios on other
4686          * function is also enabled.
4687          * Since the initialization is sequential the other fn
4688          * wont be able to acknowledge the soft reset.
4689          * Issue a force soft reset to workaround this scenario.
4690          */
4691         if (max_wait_time == 0) {
4692                 /* Issue Force Soft Reset */
4693                 spin_lock_irqsave(&ha->hardware_lock, flags);
4694                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
4695                 readl(&ha->reg->ctrl_status);
4696                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4697                 /* Wait until the firmware tells us the Soft Reset is done */
4698                 max_wait_time = SOFT_RESET_TOV;
4699                 do {
4700                         spin_lock_irqsave(&ha->hardware_lock, flags);
4701                         ctrl_status = readw(&ha->reg->ctrl_status);
4702                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4703
4704                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
4705                                 status = QLA_SUCCESS;
4706                                 break;
4707                         }
4708
4709                         msleep(1000);
4710                 } while ((--max_wait_time));
4711         }
4712
4713         return status;
4714 }
4715
4716 /**
4717  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
4718  * @ha: Pointer to host adapter structure.
4719  * @res: returned scsi status
4720  *
4721  * This routine is called just prior to a HARD RESET to return all
4722  * outstanding commands back to the Operating System.
4723  * Caller should make sure that the following locks are released
4724  * before this calling routine: Hardware lock, and io_request_lock.
4725  **/
4726 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
4727 {
4728         struct srb *srb;
4729         int i;
4730         unsigned long flags;
4731
4732         spin_lock_irqsave(&ha->hardware_lock, flags);
4733         for (i = 0; i < ha->host->can_queue; i++) {
4734                 srb = qla4xxx_del_from_active_array(ha, i);
4735                 if (srb != NULL) {
4736                         srb->cmd->result = res;
4737                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4738                 }
4739         }
4740         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4741 }
4742
4743 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
4744 {
4745         clear_bit(AF_ONLINE, &ha->flags);
4746
4747         /* Disable the board */
4748         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
4749
4750         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
4751         qla4xxx_mark_all_devices_missing(ha);
4752         clear_bit(AF_INIT_DONE, &ha->flags);
4753 }
4754
4755 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
4756 {
4757         struct iscsi_session *sess;
4758         struct ddb_entry *ddb_entry;
4759
4760         sess = cls_session->dd_data;
4761         ddb_entry = sess->dd_data;
4762         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
4763
4764         if (ddb_entry->ddb_type == FLASH_DDB)
4765                 iscsi_block_session(ddb_entry->sess);
4766         else
4767                 iscsi_session_failure(cls_session->dd_data,
4768                                       ISCSI_ERR_CONN_FAILED);
4769 }
4770
4771 /**
4772  * qla4xxx_recover_adapter - recovers adapter after a fatal error
4773  * @ha: Pointer to host adapter structure.
4774  **/
4775 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
4776 {
4777         int status = QLA_ERROR;
4778         uint8_t reset_chip = 0;
4779         uint32_t dev_state;
4780         unsigned long wait;
4781
4782         /* Stall incoming I/O until we are done */
4783         scsi_block_requests(ha->host);
4784         clear_bit(AF_ONLINE, &ha->flags);
4785         clear_bit(AF_LINK_UP, &ha->flags);
4786
4787         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
4788
4789         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
4790
4791         if ((is_qla8032(ha) || is_qla8042(ha)) &&
4792             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4793                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4794                            __func__);
4795                 /* disable pause frame for ISP83xx */
4796                 qla4_83xx_disable_pause(ha);
4797         }
4798
4799         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
4800
4801         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
4802                 reset_chip = 1;
4803
4804         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
4805          * do not reset adapter, jump to initialize_adapter */
4806         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4807                 status = QLA_SUCCESS;
4808                 goto recover_ha_init_adapter;
4809         }
4810
4811         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
4812          * from eh_host_reset or ioctl module */
4813         if (is_qla80XX(ha) && !reset_chip &&
4814             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4815
4816                 DEBUG2(ql4_printk(KERN_INFO, ha,
4817                     "scsi%ld: %s - Performing stop_firmware...\n",
4818                     ha->host_no, __func__));
4819                 status = ha->isp_ops->reset_firmware(ha);
4820                 if (status == QLA_SUCCESS) {
4821                         if (!test_bit(AF_FW_RECOVERY, &ha->flags))
4822                                 qla4xxx_cmd_wait(ha);
4823
4824                         ha->isp_ops->disable_intrs(ha);
4825                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4826                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4827                 } else {
4828                         /* If the stop_firmware fails then
4829                          * reset the entire chip */
4830                         reset_chip = 1;
4831                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4832                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
4833                 }
4834         }
4835
4836         /* Issue full chip reset if recovering from a catastrophic error,
4837          * or if stop_firmware fails for ISP-8xxx.
4838          * This is the default case for ISP-4xxx */
4839         if (is_qla40XX(ha) || reset_chip) {
4840                 if (is_qla40XX(ha))
4841                         goto chip_reset;
4842
4843                 /* Check if 8XXX firmware is alive or not
4844                  * We may have arrived here from NEED_RESET
4845                  * detection only */
4846                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
4847                         goto chip_reset;
4848
4849                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
4850                 while (time_before(jiffies, wait)) {
4851                         if (qla4_8xxx_check_fw_alive(ha)) {
4852                                 qla4xxx_mailbox_premature_completion(ha);
4853                                 break;
4854                         }
4855
4856                         set_current_state(TASK_UNINTERRUPTIBLE);
4857                         schedule_timeout(HZ);
4858                 }
4859 chip_reset:
4860                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
4861                         qla4xxx_cmd_wait(ha);
4862
4863                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4864                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4865                 DEBUG2(ql4_printk(KERN_INFO, ha,
4866                     "scsi%ld: %s - Performing chip reset..\n",
4867                     ha->host_no, __func__));
4868                 status = ha->isp_ops->reset_chip(ha);
4869         }
4870
4871         /* Flush any pending ddb changed AENs */
4872         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4873
4874 recover_ha_init_adapter:
4875         /* Upon successful firmware/chip reset, re-initialize the adapter */
4876         if (status == QLA_SUCCESS) {
4877                 /* For ISP-4xxx, force function 1 to always initialize
4878                  * before function 3 to prevent both funcions from
4879                  * stepping on top of the other */
4880                 if (is_qla40XX(ha) && (ha->mac_index == 3))
4881                         ssleep(6);
4882
4883                 /* NOTE: AF_ONLINE flag set upon successful completion of
4884                  *       qla4xxx_initialize_adapter */
4885                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
4886         }
4887
4888         /* Retry failed adapter initialization, if necessary
4889          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
4890          * case to prevent ping-pong resets between functions */
4891         if (!test_bit(AF_ONLINE, &ha->flags) &&
4892             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4893                 /* Adapter initialization failed, see if we can retry
4894                  * resetting the ha.
4895                  * Since we don't want to block the DPC for too long
4896                  * with multiple resets in the same thread,
4897                  * utilize DPC to retry */
4898                 if (is_qla80XX(ha)) {
4899                         ha->isp_ops->idc_lock(ha);
4900                         dev_state = qla4_8xxx_rd_direct(ha,
4901                                                         QLA8XXX_CRB_DEV_STATE);
4902                         ha->isp_ops->idc_unlock(ha);
4903                         if (dev_state == QLA8XXX_DEV_FAILED) {
4904                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
4905                                            "recover adapter. H/W is in Failed "
4906                                            "state\n", __func__);
4907                                 qla4xxx_dead_adapter_cleanup(ha);
4908                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4909                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4910                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4911                                                 &ha->dpc_flags);
4912                                 status = QLA_ERROR;
4913
4914                                 goto exit_recover;
4915                         }
4916                 }
4917
4918                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
4919                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
4920                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
4921                                       "(%d) more times\n", ha->host_no,
4922                                       ha->retry_reset_ha_cnt));
4923                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4924                         status = QLA_ERROR;
4925                 } else {
4926                         if (ha->retry_reset_ha_cnt > 0) {
4927                                 /* Schedule another Reset HA--DPC will retry */
4928                                 ha->retry_reset_ha_cnt--;
4929                                 DEBUG2(printk("scsi%ld: recover adapter - "
4930                                               "retry remaining %d\n",
4931                                               ha->host_no,
4932                                               ha->retry_reset_ha_cnt));
4933                                 status = QLA_ERROR;
4934                         }
4935
4936                         if (ha->retry_reset_ha_cnt == 0) {
4937                                 /* Recover adapter retries have been exhausted.
4938                                  * Adapter DEAD */
4939                                 DEBUG2(printk("scsi%ld: recover adapter "
4940                                               "failed - board disabled\n",
4941                                               ha->host_no));
4942                                 qla4xxx_dead_adapter_cleanup(ha);
4943                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4944                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4945                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4946                                           &ha->dpc_flags);
4947                                 status = QLA_ERROR;
4948                         }
4949                 }
4950         } else {
4951                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4952                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4953                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4954         }
4955
4956 exit_recover:
4957         ha->adapter_error_count++;
4958
4959         if (test_bit(AF_ONLINE, &ha->flags))
4960                 ha->isp_ops->enable_intrs(ha);
4961
4962         scsi_unblock_requests(ha->host);
4963
4964         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
4965         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
4966             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
4967
4968         return status;
4969 }
4970
4971 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
4972 {
4973         struct iscsi_session *sess;
4974         struct ddb_entry *ddb_entry;
4975         struct scsi_qla_host *ha;
4976
4977         sess = cls_session->dd_data;
4978         ddb_entry = sess->dd_data;
4979         ha = ddb_entry->ha;
4980         if (!iscsi_is_session_online(cls_session)) {
4981                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
4982                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
4983                                    " unblock session\n", ha->host_no, __func__,
4984                                    ddb_entry->fw_ddb_index);
4985                         iscsi_unblock_session(ddb_entry->sess);
4986                 } else {
4987                         /* Trigger relogin */
4988                         if (ddb_entry->ddb_type == FLASH_DDB) {
4989                                 if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
4990                                       test_bit(DF_DISABLE_RELOGIN,
4991                                                &ddb_entry->flags)))
4992                                         qla4xxx_arm_relogin_timer(ddb_entry);
4993                         } else
4994                                 iscsi_session_failure(cls_session->dd_data,
4995                                                       ISCSI_ERR_CONN_FAILED);
4996                 }
4997         }
4998 }
4999
5000 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
5001 {
5002         struct iscsi_session *sess;
5003         struct ddb_entry *ddb_entry;
5004         struct scsi_qla_host *ha;
5005
5006         sess = cls_session->dd_data;
5007         ddb_entry = sess->dd_data;
5008         ha = ddb_entry->ha;
5009         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5010                    " unblock session\n", ha->host_no, __func__,
5011                    ddb_entry->fw_ddb_index);
5012
5013         iscsi_unblock_session(ddb_entry->sess);
5014
5015         /* Start scan target */
5016         if (test_bit(AF_ONLINE, &ha->flags)) {
5017                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5018                            " start scan\n", ha->host_no, __func__,
5019                            ddb_entry->fw_ddb_index);
5020                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
5021         }
5022         return QLA_SUCCESS;
5023 }
5024
5025 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
5026 {
5027         struct iscsi_session *sess;
5028         struct ddb_entry *ddb_entry;
5029         struct scsi_qla_host *ha;
5030         int status = QLA_SUCCESS;
5031
5032         sess = cls_session->dd_data;
5033         ddb_entry = sess->dd_data;
5034         ha = ddb_entry->ha;
5035         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5036                    " unblock user space session\n", ha->host_no, __func__,
5037                    ddb_entry->fw_ddb_index);
5038
5039         if (!iscsi_is_session_online(cls_session)) {
5040                 iscsi_conn_start(ddb_entry->conn);
5041                 iscsi_conn_login_event(ddb_entry->conn,
5042                                        ISCSI_CONN_STATE_LOGGED_IN);
5043         } else {
5044                 ql4_printk(KERN_INFO, ha,
5045                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
5046                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
5047                            cls_session->sid);
5048                 status = QLA_ERROR;
5049         }
5050
5051         return status;
5052 }
5053
5054 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
5055 {
5056         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
5057 }
5058
5059 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
5060 {
5061         uint16_t relogin_timer;
5062         struct iscsi_session *sess;
5063         struct ddb_entry *ddb_entry;
5064         struct scsi_qla_host *ha;
5065
5066         sess = cls_sess->dd_data;
5067         ddb_entry = sess->dd_data;
5068         ha = ddb_entry->ha;
5069
5070         relogin_timer = max(ddb_entry->default_relogin_timeout,
5071                             (uint16_t)RELOGIN_TOV);
5072         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
5073
5074         DEBUG2(ql4_printk(KERN_INFO, ha,
5075                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
5076                           ddb_entry->fw_ddb_index, relogin_timer));
5077
5078         qla4xxx_login_flash_ddb(cls_sess);
5079 }
5080
5081 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
5082 {
5083         struct iscsi_session *sess;
5084         struct ddb_entry *ddb_entry;
5085         struct scsi_qla_host *ha;
5086
5087         sess = cls_sess->dd_data;
5088         ddb_entry = sess->dd_data;
5089         ha = ddb_entry->ha;
5090
5091         if (!(ddb_entry->ddb_type == FLASH_DDB))
5092                 return;
5093
5094         if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
5095                 return;
5096
5097         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
5098             !iscsi_is_session_online(cls_sess)) {
5099                 DEBUG2(ql4_printk(KERN_INFO, ha,
5100                                   "relogin issued\n"));
5101                 qla4xxx_relogin_flash_ddb(cls_sess);
5102         }
5103 }
5104
5105 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
5106 {
5107         if (ha->dpc_thread)
5108                 queue_work(ha->dpc_thread, &ha->dpc_work);
5109 }
5110
5111 static struct qla4_work_evt *
5112 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
5113                    enum qla4_work_type type)
5114 {
5115         struct qla4_work_evt *e;
5116         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
5117
5118         e = kzalloc(size, GFP_ATOMIC);
5119         if (!e)
5120                 return NULL;
5121
5122         INIT_LIST_HEAD(&e->list);
5123         e->type = type;
5124         return e;
5125 }
5126
5127 static void qla4xxx_post_work(struct scsi_qla_host *ha,
5128                              struct qla4_work_evt *e)
5129 {
5130         unsigned long flags;
5131
5132         spin_lock_irqsave(&ha->work_lock, flags);
5133         list_add_tail(&e->list, &ha->work_list);
5134         spin_unlock_irqrestore(&ha->work_lock, flags);
5135         qla4xxx_wake_dpc(ha);
5136 }
5137
5138 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
5139                           enum iscsi_host_event_code aen_code,
5140                           uint32_t data_size, uint8_t *data)
5141 {
5142         struct qla4_work_evt *e;
5143
5144         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
5145         if (!e)
5146                 return QLA_ERROR;
5147
5148         e->u.aen.code = aen_code;
5149         e->u.aen.data_size = data_size;
5150         memcpy(e->u.aen.data, data, data_size);
5151
5152         qla4xxx_post_work(ha, e);
5153
5154         return QLA_SUCCESS;
5155 }
5156
5157 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
5158                                uint32_t status, uint32_t pid,
5159                                uint32_t data_size, uint8_t *data)
5160 {
5161         struct qla4_work_evt *e;
5162
5163         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
5164         if (!e)
5165                 return QLA_ERROR;
5166
5167         e->u.ping.status = status;
5168         e->u.ping.pid = pid;
5169         e->u.ping.data_size = data_size;
5170         memcpy(e->u.ping.data, data, data_size);
5171
5172         qla4xxx_post_work(ha, e);
5173
5174         return QLA_SUCCESS;
5175 }
5176
5177 static void qla4xxx_do_work(struct scsi_qla_host *ha)
5178 {
5179         struct qla4_work_evt *e, *tmp;
5180         unsigned long flags;
5181         LIST_HEAD(work);
5182
5183         spin_lock_irqsave(&ha->work_lock, flags);
5184         list_splice_init(&ha->work_list, &work);
5185         spin_unlock_irqrestore(&ha->work_lock, flags);
5186
5187         list_for_each_entry_safe(e, tmp, &work, list) {
5188                 list_del_init(&e->list);
5189
5190                 switch (e->type) {
5191                 case QLA4_EVENT_AEN:
5192                         iscsi_post_host_event(ha->host_no,
5193                                               &qla4xxx_iscsi_transport,
5194                                               e->u.aen.code,
5195                                               e->u.aen.data_size,
5196                                               e->u.aen.data);
5197                         break;
5198                 case QLA4_EVENT_PING_STATUS:
5199                         iscsi_ping_comp_event(ha->host_no,
5200                                               &qla4xxx_iscsi_transport,
5201                                               e->u.ping.status,
5202                                               e->u.ping.pid,
5203                                               e->u.ping.data_size,
5204                                               e->u.ping.data);
5205                         break;
5206                 default:
5207                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
5208                                    "supported", e->type);
5209                 }
5210                 kfree(e);
5211         }
5212 }
5213
5214 /**
5215  * qla4xxx_do_dpc - dpc routine
5216  * @data: in our case pointer to adapter structure
5217  *
5218  * This routine is a task that is schedule by the interrupt handler
5219  * to perform the background processing for interrupts.  We put it
5220  * on a task queue that is consumed whenever the scheduler runs; that's
5221  * so you can do anything (i.e. put the process to sleep etc).  In fact,
5222  * the mid-level tries to sleep when it reaches the driver threshold
5223  * "host->can_queue". This can cause a panic if we were in our interrupt code.
5224  **/
5225 static void qla4xxx_do_dpc(struct work_struct *work)
5226 {
5227         struct scsi_qla_host *ha =
5228                 container_of(work, struct scsi_qla_host, dpc_work);
5229         int status = QLA_ERROR;
5230
5231         DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
5232             "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
5233             ha->host_no, __func__, ha->flags, ha->dpc_flags))
5234
5235         /* Initialization not yet finished. Don't do anything yet. */
5236         if (!test_bit(AF_INIT_DONE, &ha->flags))
5237                 return;
5238
5239         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
5240                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
5241                     ha->host_no, __func__, ha->flags));
5242                 return;
5243         }
5244
5245         /* post events to application */
5246         qla4xxx_do_work(ha);
5247
5248         if (is_qla80XX(ha)) {
5249                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
5250                         if (is_qla8032(ha) || is_qla8042(ha)) {
5251                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
5252                                            __func__);
5253                                 /* disable pause frame for ISP83xx */
5254                                 qla4_83xx_disable_pause(ha);
5255                         }
5256
5257                         ha->isp_ops->idc_lock(ha);
5258                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5259                                             QLA8XXX_DEV_FAILED);
5260                         ha->isp_ops->idc_unlock(ha);
5261                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
5262                         qla4_8xxx_device_state_handler(ha);
5263                 }
5264
5265                 if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
5266                         if (is_qla8042(ha)) {
5267                                 if (ha->idc_info.info2 &
5268                                     ENABLE_INTERNAL_LOOPBACK) {
5269                                         ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
5270                                                    __func__);
5271                                         status = qla4_84xx_config_acb(ha,
5272                                                             ACB_CONFIG_DISABLE);
5273                                         if (status != QLA_SUCCESS) {
5274                                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
5275                                                            __func__);
5276                                         }
5277                                 }
5278                         }
5279                         qla4_83xx_post_idc_ack(ha);
5280                         clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
5281                 }
5282
5283                 if (is_qla8042(ha) &&
5284                     test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
5285                         ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
5286                                    __func__);
5287                         if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
5288                             QLA_SUCCESS) {
5289                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
5290                                            __func__);
5291                         }
5292                         clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
5293                 }
5294
5295                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
5296                         qla4_8xxx_need_qsnt_handler(ha);
5297                 }
5298         }
5299
5300         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
5301             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
5302             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
5303             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
5304                 if ((is_qla8022(ha) && ql4xdontresethba) ||
5305                     ((is_qla8032(ha) || is_qla8042(ha)) &&
5306                      qla4_83xx_idc_dontreset(ha))) {
5307                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5308                             ha->host_no, __func__));
5309                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5310                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5311                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5312                         goto dpc_post_reset_ha;
5313                 }
5314                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
5315                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
5316                         qla4xxx_recover_adapter(ha);
5317
5318                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
5319                         uint8_t wait_time = RESET_INTR_TOV;
5320
5321                         while ((readw(&ha->reg->ctrl_status) &
5322                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
5323                                 if (--wait_time == 0)
5324                                         break;
5325                                 msleep(1000);
5326                         }
5327                         if (wait_time == 0)
5328                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
5329                                               "bit not cleared-- resetting\n",
5330                                               ha->host_no, __func__));
5331                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
5332                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
5333                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
5334                                 status = qla4xxx_recover_adapter(ha);
5335                         }
5336                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5337                         if (status == QLA_SUCCESS)
5338                                 ha->isp_ops->enable_intrs(ha);
5339                 }
5340         }
5341
5342 dpc_post_reset_ha:
5343         /* ---- process AEN? --- */
5344         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
5345                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
5346
5347         /* ---- Get DHCP IP Address? --- */
5348         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
5349                 qla4xxx_get_dhcp_ip_address(ha);
5350
5351         /* ---- relogin device? --- */
5352         if (adapter_up(ha) &&
5353             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
5354                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
5355         }
5356
5357         /* ---- link change? --- */
5358         if (!test_bit(AF_LOOPBACK, &ha->flags) &&
5359             test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
5360                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
5361                         /* ---- link down? --- */
5362                         qla4xxx_mark_all_devices_missing(ha);
5363                 } else {
5364                         /* ---- link up? --- *
5365                          * F/W will auto login to all devices ONLY ONCE after
5366                          * link up during driver initialization and runtime
5367                          * fatal error recovery.  Therefore, the driver must
5368                          * manually relogin to devices when recovering from
5369                          * connection failures, logouts, expired KATO, etc. */
5370                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
5371                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
5372                                 iscsi_host_for_each_session(ha->host,
5373                                                 qla4xxx_login_flash_ddb);
5374                         } else
5375                                 qla4xxx_relogin_all_devices(ha);
5376                 }
5377         }
5378 }
5379
5380 /**
5381  * qla4xxx_free_adapter - release the adapter
5382  * @ha: pointer to adapter structure
5383  **/
5384 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
5385 {
5386         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5387
5388         /* Turn-off interrupts on the card. */
5389         ha->isp_ops->disable_intrs(ha);
5390
5391         if (is_qla40XX(ha)) {
5392                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
5393                        &ha->reg->ctrl_status);
5394                 readl(&ha->reg->ctrl_status);
5395         } else if (is_qla8022(ha)) {
5396                 writel(0, &ha->qla4_82xx_reg->host_int);
5397                 readl(&ha->qla4_82xx_reg->host_int);
5398         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5399                 writel(0, &ha->qla4_83xx_reg->risc_intr);
5400                 readl(&ha->qla4_83xx_reg->risc_intr);
5401         }
5402
5403         /* Remove timer thread, if present */
5404         if (ha->timer_active)
5405                 qla4xxx_stop_timer(ha);
5406
5407         /* Kill the kernel thread for this host */
5408         if (ha->dpc_thread)
5409                 destroy_workqueue(ha->dpc_thread);
5410
5411         /* Kill the kernel thread for this host */
5412         if (ha->task_wq)
5413                 destroy_workqueue(ha->task_wq);
5414
5415         /* Put firmware in known state */
5416         ha->isp_ops->reset_firmware(ha);
5417
5418         if (is_qla80XX(ha)) {
5419                 ha->isp_ops->idc_lock(ha);
5420                 qla4_8xxx_clear_drv_active(ha);
5421                 ha->isp_ops->idc_unlock(ha);
5422         }
5423
5424         /* Detach interrupts */
5425         qla4xxx_free_irqs(ha);
5426
5427         /* free extra memory */
5428         qla4xxx_mem_free(ha);
5429 }
5430
5431 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
5432 {
5433         int status = 0;
5434         unsigned long mem_base, mem_len, db_base, db_len;
5435         struct pci_dev *pdev = ha->pdev;
5436
5437         status = pci_request_regions(pdev, DRIVER_NAME);
5438         if (status) {
5439                 printk(KERN_WARNING
5440                     "scsi(%ld) Failed to reserve PIO regions (%s) "
5441                     "status=%d\n", ha->host_no, pci_name(pdev), status);
5442                 goto iospace_error_exit;
5443         }
5444
5445         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
5446             __func__, pdev->revision));
5447         ha->revision_id = pdev->revision;
5448
5449         /* remap phys address */
5450         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
5451         mem_len = pci_resource_len(pdev, 0);
5452         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
5453             __func__, mem_base, mem_len));
5454
5455         /* mapping of pcibase pointer */
5456         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
5457         if (!ha->nx_pcibase) {
5458                 printk(KERN_ERR
5459                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
5460                 pci_release_regions(ha->pdev);
5461                 goto iospace_error_exit;
5462         }
5463
5464         /* Mapping of IO base pointer, door bell read and write pointer */
5465
5466         /* mapping of IO base pointer */
5467         if (is_qla8022(ha)) {
5468                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
5469                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
5470                                      (ha->pdev->devfn << 11));
5471                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
5472                                     QLA82XX_CAM_RAM_DB2);
5473         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5474                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
5475                                     ((uint8_t *)ha->nx_pcibase);
5476         }
5477
5478         db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
5479         db_len = pci_resource_len(pdev, 4);
5480
5481         return 0;
5482 iospace_error_exit:
5483         return -ENOMEM;
5484 }
5485
5486 /***
5487  * qla4xxx_iospace_config - maps registers
5488  * @ha: pointer to adapter structure
5489  *
5490  * This routines maps HBA's registers from the pci address space
5491  * into the kernel virtual address space for memory mapped i/o.
5492  **/
5493 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
5494 {
5495         unsigned long pio, pio_len, pio_flags;
5496         unsigned long mmio, mmio_len, mmio_flags;
5497
5498         pio = pci_resource_start(ha->pdev, 0);
5499         pio_len = pci_resource_len(ha->pdev, 0);
5500         pio_flags = pci_resource_flags(ha->pdev, 0);
5501         if (pio_flags & IORESOURCE_IO) {
5502                 if (pio_len < MIN_IOBASE_LEN) {
5503                         ql4_printk(KERN_WARNING, ha,
5504                                 "Invalid PCI I/O region size\n");
5505                         pio = 0;
5506                 }
5507         } else {
5508                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
5509                 pio = 0;
5510         }
5511
5512         /* Use MMIO operations for all accesses. */
5513         mmio = pci_resource_start(ha->pdev, 1);
5514         mmio_len = pci_resource_len(ha->pdev, 1);
5515         mmio_flags = pci_resource_flags(ha->pdev, 1);
5516
5517         if (!(mmio_flags & IORESOURCE_MEM)) {
5518                 ql4_printk(KERN_ERR, ha,
5519                     "region #0 not an MMIO resource, aborting\n");
5520
5521                 goto iospace_error_exit;
5522         }
5523
5524         if (mmio_len < MIN_IOBASE_LEN) {
5525                 ql4_printk(KERN_ERR, ha,
5526                     "Invalid PCI mem region size, aborting\n");
5527                 goto iospace_error_exit;
5528         }
5529
5530         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
5531                 ql4_printk(KERN_WARNING, ha,
5532                     "Failed to reserve PIO/MMIO regions\n");
5533
5534                 goto iospace_error_exit;
5535         }
5536
5537         ha->pio_address = pio;
5538         ha->pio_length = pio_len;
5539         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
5540         if (!ha->reg) {
5541                 ql4_printk(KERN_ERR, ha,
5542                     "cannot remap MMIO, aborting\n");
5543
5544                 goto iospace_error_exit;
5545         }
5546
5547         return 0;
5548
5549 iospace_error_exit:
5550         return -ENOMEM;
5551 }
5552
5553 static struct isp_operations qla4xxx_isp_ops = {
5554         .iospace_config         = qla4xxx_iospace_config,
5555         .pci_config             = qla4xxx_pci_config,
5556         .disable_intrs          = qla4xxx_disable_intrs,
5557         .enable_intrs           = qla4xxx_enable_intrs,
5558         .start_firmware         = qla4xxx_start_firmware,
5559         .intr_handler           = qla4xxx_intr_handler,
5560         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
5561         .reset_chip             = qla4xxx_soft_reset,
5562         .reset_firmware         = qla4xxx_hw_reset,
5563         .queue_iocb             = qla4xxx_queue_iocb,
5564         .complete_iocb          = qla4xxx_complete_iocb,
5565         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5566         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5567         .get_sys_info           = qla4xxx_get_sys_info,
5568         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
5569         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
5570 };
5571
5572 static struct isp_operations qla4_82xx_isp_ops = {
5573         .iospace_config         = qla4_8xxx_iospace_config,
5574         .pci_config             = qla4_8xxx_pci_config,
5575         .disable_intrs          = qla4_82xx_disable_intrs,
5576         .enable_intrs           = qla4_82xx_enable_intrs,
5577         .start_firmware         = qla4_8xxx_load_risc,
5578         .restart_firmware       = qla4_82xx_try_start_fw,
5579         .intr_handler           = qla4_82xx_intr_handler,
5580         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
5581         .need_reset             = qla4_8xxx_need_reset,
5582         .reset_chip             = qla4_82xx_isp_reset,
5583         .reset_firmware         = qla4_8xxx_stop_firmware,
5584         .queue_iocb             = qla4_82xx_queue_iocb,
5585         .complete_iocb          = qla4_82xx_complete_iocb,
5586         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
5587         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
5588         .get_sys_info           = qla4_8xxx_get_sys_info,
5589         .rd_reg_direct          = qla4_82xx_rd_32,
5590         .wr_reg_direct          = qla4_82xx_wr_32,
5591         .rd_reg_indirect        = qla4_82xx_md_rd_32,
5592         .wr_reg_indirect        = qla4_82xx_md_wr_32,
5593         .idc_lock               = qla4_82xx_idc_lock,
5594         .idc_unlock             = qla4_82xx_idc_unlock,
5595         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
5596         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
5597         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
5598 };
5599
5600 static struct isp_operations qla4_83xx_isp_ops = {
5601         .iospace_config         = qla4_8xxx_iospace_config,
5602         .pci_config             = qla4_8xxx_pci_config,
5603         .disable_intrs          = qla4_83xx_disable_intrs,
5604         .enable_intrs           = qla4_83xx_enable_intrs,
5605         .start_firmware         = qla4_8xxx_load_risc,
5606         .restart_firmware       = qla4_83xx_start_firmware,
5607         .intr_handler           = qla4_83xx_intr_handler,
5608         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
5609         .need_reset             = qla4_8xxx_need_reset,
5610         .reset_chip             = qla4_83xx_isp_reset,
5611         .reset_firmware         = qla4_8xxx_stop_firmware,
5612         .queue_iocb             = qla4_83xx_queue_iocb,
5613         .complete_iocb          = qla4_83xx_complete_iocb,
5614         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5615         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5616         .get_sys_info           = qla4_8xxx_get_sys_info,
5617         .rd_reg_direct          = qla4_83xx_rd_reg,
5618         .wr_reg_direct          = qla4_83xx_wr_reg,
5619         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
5620         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
5621         .idc_lock               = qla4_83xx_drv_lock,
5622         .idc_unlock             = qla4_83xx_drv_unlock,
5623         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
5624         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
5625         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
5626 };
5627
5628 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5629 {
5630         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
5631 }
5632
5633 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5634 {
5635         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
5636 }
5637
5638 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5639 {
5640         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
5641 }
5642
5643 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5644 {
5645         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
5646 }
5647
5648 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
5649 {
5650         struct scsi_qla_host *ha = data;
5651         char *str = buf;
5652         int rc;
5653
5654         switch (type) {
5655         case ISCSI_BOOT_ETH_FLAGS:
5656                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5657                 break;
5658         case ISCSI_BOOT_ETH_INDEX:
5659                 rc = sprintf(str, "0\n");
5660                 break;
5661         case ISCSI_BOOT_ETH_MAC:
5662                 rc = sysfs_format_mac(str, ha->my_mac,
5663                                       MAC_ADDR_LEN);
5664                 break;
5665         default:
5666                 rc = -ENOSYS;
5667                 break;
5668         }
5669         return rc;
5670 }
5671
5672 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
5673 {
5674         int rc;
5675
5676         switch (type) {
5677         case ISCSI_BOOT_ETH_FLAGS:
5678         case ISCSI_BOOT_ETH_MAC:
5679         case ISCSI_BOOT_ETH_INDEX:
5680                 rc = S_IRUGO;
5681                 break;
5682         default:
5683                 rc = 0;
5684                 break;
5685         }
5686         return rc;
5687 }
5688
5689 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
5690 {
5691         struct scsi_qla_host *ha = data;
5692         char *str = buf;
5693         int rc;
5694
5695         switch (type) {
5696         case ISCSI_BOOT_INI_INITIATOR_NAME:
5697                 rc = sprintf(str, "%s\n", ha->name_string);
5698                 break;
5699         default:
5700                 rc = -ENOSYS;
5701                 break;
5702         }
5703         return rc;
5704 }
5705
5706 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
5707 {
5708         int rc;
5709
5710         switch (type) {
5711         case ISCSI_BOOT_INI_INITIATOR_NAME:
5712                 rc = S_IRUGO;
5713                 break;
5714         default:
5715                 rc = 0;
5716                 break;
5717         }
5718         return rc;
5719 }
5720
5721 static ssize_t
5722 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
5723                            char *buf)
5724 {
5725         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
5726         char *str = buf;
5727         int rc;
5728
5729         switch (type) {
5730         case ISCSI_BOOT_TGT_NAME:
5731                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
5732                 break;
5733         case ISCSI_BOOT_TGT_IP_ADDR:
5734                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
5735                         rc = sprintf(buf, "%pI4\n",
5736                                      &boot_conn->dest_ipaddr.ip_address);
5737                 else
5738                         rc = sprintf(str, "%pI6\n",
5739                                      &boot_conn->dest_ipaddr.ip_address);
5740                 break;
5741         case ISCSI_BOOT_TGT_PORT:
5742                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
5743                 break;
5744         case ISCSI_BOOT_TGT_CHAP_NAME:
5745                 rc = sprintf(str,  "%.*s\n",
5746                              boot_conn->chap.target_chap_name_length,
5747                              (char *)&boot_conn->chap.target_chap_name);
5748                 break;
5749         case ISCSI_BOOT_TGT_CHAP_SECRET:
5750                 rc = sprintf(str,  "%.*s\n",
5751                              boot_conn->chap.target_secret_length,
5752                              (char *)&boot_conn->chap.target_secret);
5753                 break;
5754         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5755                 rc = sprintf(str,  "%.*s\n",
5756                              boot_conn->chap.intr_chap_name_length,
5757                              (char *)&boot_conn->chap.intr_chap_name);
5758                 break;
5759         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5760                 rc = sprintf(str,  "%.*s\n",
5761                              boot_conn->chap.intr_secret_length,
5762                              (char *)&boot_conn->chap.intr_secret);
5763                 break;
5764         case ISCSI_BOOT_TGT_FLAGS:
5765                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5766                 break;
5767         case ISCSI_BOOT_TGT_NIC_ASSOC:
5768                 rc = sprintf(str, "0\n");
5769                 break;
5770         default:
5771                 rc = -ENOSYS;
5772                 break;
5773         }
5774         return rc;
5775 }
5776
5777 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
5778 {
5779         struct scsi_qla_host *ha = data;
5780         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
5781
5782         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5783 }
5784
5785 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
5786 {
5787         struct scsi_qla_host *ha = data;
5788         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
5789
5790         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5791 }
5792
5793 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
5794 {
5795         int rc;
5796
5797         switch (type) {
5798         case ISCSI_BOOT_TGT_NAME:
5799         case ISCSI_BOOT_TGT_IP_ADDR:
5800         case ISCSI_BOOT_TGT_PORT:
5801         case ISCSI_BOOT_TGT_CHAP_NAME:
5802         case ISCSI_BOOT_TGT_CHAP_SECRET:
5803         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5804         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5805         case ISCSI_BOOT_TGT_NIC_ASSOC:
5806         case ISCSI_BOOT_TGT_FLAGS:
5807                 rc = S_IRUGO;
5808                 break;
5809         default:
5810                 rc = 0;
5811                 break;
5812         }
5813         return rc;
5814 }
5815
5816 static void qla4xxx_boot_release(void *data)
5817 {
5818         struct scsi_qla_host *ha = data;
5819
5820         scsi_host_put(ha->host);
5821 }
5822
5823 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
5824 {
5825         dma_addr_t buf_dma;
5826         uint32_t addr, pri_addr, sec_addr;
5827         uint32_t offset;
5828         uint16_t func_num;
5829         uint8_t val;
5830         uint8_t *buf = NULL;
5831         size_t size = 13 * sizeof(uint8_t);
5832         int ret = QLA_SUCCESS;
5833
5834         func_num = PCI_FUNC(ha->pdev->devfn);
5835
5836         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
5837                    __func__, ha->pdev->device, func_num);
5838
5839         if (is_qla40XX(ha)) {
5840                 if (func_num == 1) {
5841                         addr = NVRAM_PORT0_BOOT_MODE;
5842                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
5843                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
5844                 } else if (func_num == 3) {
5845                         addr = NVRAM_PORT1_BOOT_MODE;
5846                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
5847                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
5848                 } else {
5849                         ret = QLA_ERROR;
5850                         goto exit_boot_info;
5851                 }
5852
5853                 /* Check Boot Mode */
5854                 val = rd_nvram_byte(ha, addr);
5855                 if (!(val & 0x07)) {
5856                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
5857                                           "options : 0x%x\n", __func__, val));
5858                         ret = QLA_ERROR;
5859                         goto exit_boot_info;
5860                 }
5861
5862                 /* get primary valid target index */
5863                 val = rd_nvram_byte(ha, pri_addr);
5864                 if (val & BIT_7)
5865                         ddb_index[0] = (val & 0x7f);
5866
5867                 /* get secondary valid target index */
5868                 val = rd_nvram_byte(ha, sec_addr);
5869                 if (val & BIT_7)
5870                         ddb_index[1] = (val & 0x7f);
5871
5872         } else if (is_qla80XX(ha)) {
5873                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
5874                                          &buf_dma, GFP_KERNEL);
5875                 if (!buf) {
5876                         DEBUG2(ql4_printk(KERN_ERR, ha,
5877                                           "%s: Unable to allocate dma buffer\n",
5878                                            __func__));
5879                         ret = QLA_ERROR;
5880                         goto exit_boot_info;
5881                 }
5882
5883                 if (ha->port_num == 0)
5884                         offset = BOOT_PARAM_OFFSET_PORT0;
5885                 else if (ha->port_num == 1)
5886                         offset = BOOT_PARAM_OFFSET_PORT1;
5887                 else {
5888                         ret = QLA_ERROR;
5889                         goto exit_boot_info_free;
5890                 }
5891                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
5892                        offset;
5893                 if (qla4xxx_get_flash(ha, buf_dma, addr,
5894                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
5895                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
5896                                           " failed\n", ha->host_no, __func__));
5897                         ret = QLA_ERROR;
5898                         goto exit_boot_info_free;
5899                 }
5900                 /* Check Boot Mode */
5901                 if (!(buf[1] & 0x07)) {
5902                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
5903                                           " : 0x%x\n", buf[1]));
5904                         ret = QLA_ERROR;
5905                         goto exit_boot_info_free;
5906                 }
5907
5908                 /* get primary valid target index */
5909                 if (buf[2] & BIT_7)
5910                         ddb_index[0] = buf[2] & 0x7f;
5911
5912                 /* get secondary valid target index */
5913                 if (buf[11] & BIT_7)
5914                         ddb_index[1] = buf[11] & 0x7f;
5915         } else {
5916                 ret = QLA_ERROR;
5917                 goto exit_boot_info;
5918         }
5919
5920         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
5921                           " target ID %d\n", __func__, ddb_index[0],
5922                           ddb_index[1]));
5923
5924 exit_boot_info_free:
5925         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
5926 exit_boot_info:
5927         ha->pri_ddb_idx = ddb_index[0];
5928         ha->sec_ddb_idx = ddb_index[1];
5929         return ret;
5930 }
5931
5932 /**
5933  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
5934  * @ha: pointer to adapter structure
5935  * @username: CHAP username to be returned
5936  * @password: CHAP password to be returned
5937  *
5938  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
5939  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
5940  * So from the CHAP cache find the first BIDI CHAP entry and set it
5941  * to the boot record in sysfs.
5942  **/
5943 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
5944                             char *password)
5945 {
5946         int i, ret = -EINVAL;
5947         int max_chap_entries = 0;
5948         struct ql4_chap_table *chap_table;
5949
5950         if (is_qla80XX(ha))
5951                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
5952                                                 sizeof(struct ql4_chap_table);
5953         else
5954                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
5955
5956         if (!ha->chap_list) {
5957                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
5958                 return ret;
5959         }
5960
5961         mutex_lock(&ha->chap_sem);
5962         for (i = 0; i < max_chap_entries; i++) {
5963                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
5964                 if (chap_table->cookie !=
5965                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
5966                         continue;
5967                 }
5968
5969                 if (chap_table->flags & BIT_7) /* local */
5970                         continue;
5971
5972                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
5973                         continue;
5974
5975                 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
5976                 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
5977                 ret = 0;
5978                 break;
5979         }
5980         mutex_unlock(&ha->chap_sem);
5981
5982         return ret;
5983 }
5984
5985
5986 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
5987                                    struct ql4_boot_session_info *boot_sess,
5988                                    uint16_t ddb_index)
5989 {
5990         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
5991         struct dev_db_entry *fw_ddb_entry;
5992         dma_addr_t fw_ddb_entry_dma;
5993         uint16_t idx;
5994         uint16_t options;
5995         int ret = QLA_SUCCESS;
5996
5997         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5998                                           &fw_ddb_entry_dma, GFP_KERNEL);
5999         if (!fw_ddb_entry) {
6000                 DEBUG2(ql4_printk(KERN_ERR, ha,
6001                                   "%s: Unable to allocate dma buffer.\n",
6002                                   __func__));
6003                 ret = QLA_ERROR;
6004                 return ret;
6005         }
6006
6007         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
6008                                    fw_ddb_entry_dma, ddb_index)) {
6009                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
6010                                   "index [%d]\n", __func__, ddb_index));
6011                 ret = QLA_ERROR;
6012                 goto exit_boot_target;
6013         }
6014
6015         /* Update target name and IP from DDB */
6016         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
6017                min(sizeof(boot_sess->target_name),
6018                    sizeof(fw_ddb_entry->iscsi_name)));
6019
6020         options = le16_to_cpu(fw_ddb_entry->options);
6021         if (options & DDB_OPT_IPV6_DEVICE) {
6022                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6023                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
6024         } else {
6025                 boot_conn->dest_ipaddr.ip_type = 0x1;
6026                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6027                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
6028         }
6029
6030         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
6031
6032         /* update chap information */
6033         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
6034
6035         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
6036
6037                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
6038
6039                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
6040                                        target_chap_name,
6041                                        (char *)&boot_conn->chap.target_secret,
6042                                        idx);
6043                 if (ret) {
6044                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
6045                         ret = QLA_ERROR;
6046                         goto exit_boot_target;
6047                 }
6048
6049                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6050                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6051         }
6052
6053         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
6054
6055                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
6056
6057                 ret = qla4xxx_get_bidi_chap(ha,
6058                                     (char *)&boot_conn->chap.intr_chap_name,
6059                                     (char *)&boot_conn->chap.intr_secret);
6060
6061                 if (ret) {
6062                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
6063                         ret = QLA_ERROR;
6064                         goto exit_boot_target;
6065                 }
6066
6067                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6068                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6069         }
6070
6071 exit_boot_target:
6072         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6073                           fw_ddb_entry, fw_ddb_entry_dma);
6074         return ret;
6075 }
6076
6077 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
6078 {
6079         uint16_t ddb_index[2];
6080         int ret = QLA_ERROR;
6081         int rval;
6082
6083         memset(ddb_index, 0, sizeof(ddb_index));
6084         ddb_index[0] = 0xffff;
6085         ddb_index[1] = 0xffff;
6086         ret = get_fw_boot_info(ha, ddb_index);
6087         if (ret != QLA_SUCCESS) {
6088                 DEBUG2(ql4_printk(KERN_INFO, ha,
6089                                 "%s: No boot target configured.\n", __func__));
6090                 return ret;
6091         }
6092
6093         if (ql4xdisablesysfsboot)
6094                 return QLA_SUCCESS;
6095
6096         if (ddb_index[0] == 0xffff)
6097                 goto sec_target;
6098
6099         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
6100                                       ddb_index[0]);
6101         if (rval != QLA_SUCCESS) {
6102                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
6103                                   "configured\n", __func__));
6104         } else
6105                 ret = QLA_SUCCESS;
6106
6107 sec_target:
6108         if (ddb_index[1] == 0xffff)
6109                 goto exit_get_boot_info;
6110
6111         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
6112                                       ddb_index[1]);
6113         if (rval != QLA_SUCCESS) {
6114                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
6115                                   " configured\n", __func__));
6116         } else
6117                 ret = QLA_SUCCESS;
6118
6119 exit_get_boot_info:
6120         return ret;
6121 }
6122
6123 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
6124 {
6125         struct iscsi_boot_kobj *boot_kobj;
6126
6127         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
6128                 return QLA_ERROR;
6129
6130         if (ql4xdisablesysfsboot) {
6131                 ql4_printk(KERN_INFO, ha,
6132                            "%s: syfsboot disabled - driver will trigger login "
6133                            "and publish session for discovery .\n", __func__);
6134                 return QLA_SUCCESS;
6135         }
6136
6137
6138         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
6139         if (!ha->boot_kset)
6140                 goto kset_free;
6141
6142         if (!scsi_host_get(ha->host))
6143                 goto kset_free;
6144         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
6145                                              qla4xxx_show_boot_tgt_pri_info,
6146                                              qla4xxx_tgt_get_attr_visibility,
6147                                              qla4xxx_boot_release);
6148         if (!boot_kobj)
6149                 goto put_host;
6150
6151         if (!scsi_host_get(ha->host))
6152                 goto kset_free;
6153         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
6154                                              qla4xxx_show_boot_tgt_sec_info,
6155                                              qla4xxx_tgt_get_attr_visibility,
6156                                              qla4xxx_boot_release);
6157         if (!boot_kobj)
6158                 goto put_host;
6159
6160         if (!scsi_host_get(ha->host))
6161                 goto kset_free;
6162         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
6163                                                qla4xxx_show_boot_ini_info,
6164                                                qla4xxx_ini_get_attr_visibility,
6165                                                qla4xxx_boot_release);
6166         if (!boot_kobj)
6167                 goto put_host;
6168
6169         if (!scsi_host_get(ha->host))
6170                 goto kset_free;
6171         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
6172                                                qla4xxx_show_boot_eth_info,
6173                                                qla4xxx_eth_get_attr_visibility,
6174                                                qla4xxx_boot_release);
6175         if (!boot_kobj)
6176                 goto put_host;
6177
6178         return QLA_SUCCESS;
6179
6180 put_host:
6181         scsi_host_put(ha->host);
6182 kset_free:
6183         iscsi_boot_destroy_kset(ha->boot_kset);
6184         return -ENOMEM;
6185 }
6186
6187
6188 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
6189                                   struct ql4_tuple_ddb *tddb)
6190 {
6191         struct scsi_qla_host *ha;
6192         struct iscsi_cls_session *cls_sess;
6193         struct iscsi_cls_conn *cls_conn;
6194         struct iscsi_session *sess;
6195         struct iscsi_conn *conn;
6196
6197         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
6198         ha = ddb_entry->ha;
6199         cls_sess = ddb_entry->sess;
6200         sess = cls_sess->dd_data;
6201         cls_conn = ddb_entry->conn;
6202         conn = cls_conn->dd_data;
6203
6204         tddb->tpgt = sess->tpgt;
6205         tddb->port = conn->persistent_port;
6206         strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
6207         strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
6208 }
6209
6210 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
6211                                       struct ql4_tuple_ddb *tddb,
6212                                       uint8_t *flash_isid)
6213 {
6214         uint16_t options = 0;
6215
6216         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
6217         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
6218                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
6219
6220         options = le16_to_cpu(fw_ddb_entry->options);
6221         if (options & DDB_OPT_IPV6_DEVICE)
6222                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
6223         else
6224                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
6225
6226         tddb->port = le16_to_cpu(fw_ddb_entry->port);
6227
6228         if (flash_isid == NULL)
6229                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
6230                        sizeof(tddb->isid));
6231         else
6232                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
6233 }
6234
6235 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
6236                                      struct ql4_tuple_ddb *old_tddb,
6237                                      struct ql4_tuple_ddb *new_tddb,
6238                                      uint8_t is_isid_compare)
6239 {
6240         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6241                 return QLA_ERROR;
6242
6243         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
6244                 return QLA_ERROR;
6245
6246         if (old_tddb->port != new_tddb->port)
6247                 return QLA_ERROR;
6248
6249         /* For multi sessions, driver generates the ISID, so do not compare
6250          * ISID in reset path since it would be a comparison between the
6251          * driver generated ISID and firmware generated ISID. This could
6252          * lead to adding duplicated DDBs in the list as driver generated
6253          * ISID would not match firmware generated ISID.
6254          */
6255         if (is_isid_compare) {
6256                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
6257                         "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
6258                         __func__, old_tddb->isid[5], old_tddb->isid[4],
6259                         old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
6260                         old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
6261                         new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
6262                         new_tddb->isid[0]));
6263
6264                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6265                            sizeof(old_tddb->isid)))
6266                         return QLA_ERROR;
6267         }
6268
6269         DEBUG2(ql4_printk(KERN_INFO, ha,
6270                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
6271                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
6272                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
6273                           new_tddb->ip_addr, new_tddb->iscsi_name));
6274
6275         return QLA_SUCCESS;
6276 }
6277
6278 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
6279                                      struct dev_db_entry *fw_ddb_entry,
6280                                      uint32_t *index)
6281 {
6282         struct ddb_entry *ddb_entry;
6283         struct ql4_tuple_ddb *fw_tddb = NULL;
6284         struct ql4_tuple_ddb *tmp_tddb = NULL;
6285         int idx;
6286         int ret = QLA_ERROR;
6287
6288         fw_tddb = vzalloc(sizeof(*fw_tddb));
6289         if (!fw_tddb) {
6290                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6291                                   "Memory Allocation failed.\n"));
6292                 ret = QLA_SUCCESS;
6293                 goto exit_check;
6294         }
6295
6296         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6297         if (!tmp_tddb) {
6298                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6299                                   "Memory Allocation failed.\n"));
6300                 ret = QLA_SUCCESS;
6301                 goto exit_check;
6302         }
6303
6304         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6305
6306         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6307                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6308                 if (ddb_entry == NULL)
6309                         continue;
6310
6311                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
6312                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
6313                         ret = QLA_SUCCESS; /* found */
6314                         if (index != NULL)
6315                                 *index = idx;
6316                         goto exit_check;
6317                 }
6318         }
6319
6320 exit_check:
6321         if (fw_tddb)
6322                 vfree(fw_tddb);
6323         if (tmp_tddb)
6324                 vfree(tmp_tddb);
6325         return ret;
6326 }
6327
6328 /**
6329  * qla4xxx_check_existing_isid - check if target with same isid exist
6330  *                               in target list
6331  * @list_nt: list of target
6332  * @isid: isid to check
6333  *
6334  * This routine return QLA_SUCCESS if target with same isid exist
6335  **/
6336 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
6337 {
6338         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
6339         struct dev_db_entry *fw_ddb_entry;
6340
6341         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6342                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
6343
6344                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
6345                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
6346                         return QLA_SUCCESS;
6347                 }
6348         }
6349         return QLA_ERROR;
6350 }
6351
6352 /**
6353  * qla4xxx_update_isid - compare ddbs and updated isid
6354  * @ha: Pointer to host adapter structure.
6355  * @list_nt: list of nt target
6356  * @fw_ddb_entry: firmware ddb entry
6357  *
6358  * This routine update isid if ddbs have same iqn, same isid and
6359  * different IP addr.
6360  * Return QLA_SUCCESS if isid is updated.
6361  **/
6362 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
6363                                struct list_head *list_nt,
6364                                struct dev_db_entry *fw_ddb_entry)
6365 {
6366         uint8_t base_value, i;
6367
6368         base_value = fw_ddb_entry->isid[1] & 0x1f;
6369         for (i = 0; i < 8; i++) {
6370                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
6371                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6372                         break;
6373         }
6374
6375         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6376                 return QLA_ERROR;
6377
6378         return QLA_SUCCESS;
6379 }
6380
6381 /**
6382  * qla4xxx_should_update_isid - check if isid need to update
6383  * @ha: Pointer to host adapter structure.
6384  * @old_tddb: ddb tuple
6385  * @new_tddb: ddb tuple
6386  *
6387  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
6388  * same isid
6389  **/
6390 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
6391                                       struct ql4_tuple_ddb *old_tddb,
6392                                       struct ql4_tuple_ddb *new_tddb)
6393 {
6394         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
6395                 /* Same ip */
6396                 if (old_tddb->port == new_tddb->port)
6397                         return QLA_ERROR;
6398         }
6399
6400         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6401                 /* different iqn */
6402                 return QLA_ERROR;
6403
6404         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6405                    sizeof(old_tddb->isid)))
6406                 /* different isid */
6407                 return QLA_ERROR;
6408
6409         return QLA_SUCCESS;
6410 }
6411
6412 /**
6413  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
6414  * @ha: Pointer to host adapter structure.
6415  * @list_nt: list of nt target.
6416  * @fw_ddb_entry: firmware ddb entry.
6417  *
6418  * This routine check if fw_ddb_entry already exists in list_nt to avoid
6419  * duplicate ddb in list_nt.
6420  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
6421  * Note: This function also update isid of DDB if required.
6422  **/
6423
6424 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
6425                                        struct list_head *list_nt,
6426                                        struct dev_db_entry *fw_ddb_entry)
6427 {
6428         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
6429         struct ql4_tuple_ddb *fw_tddb = NULL;
6430         struct ql4_tuple_ddb *tmp_tddb = NULL;
6431         int rval, ret = QLA_ERROR;
6432
6433         fw_tddb = vzalloc(sizeof(*fw_tddb));
6434         if (!fw_tddb) {
6435                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6436                                   "Memory Allocation failed.\n"));
6437                 ret = QLA_SUCCESS;
6438                 goto exit_check;
6439         }
6440
6441         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6442         if (!tmp_tddb) {
6443                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6444                                   "Memory Allocation failed.\n"));
6445                 ret = QLA_SUCCESS;
6446                 goto exit_check;
6447         }
6448
6449         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6450
6451         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6452                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
6453                                           nt_ddb_idx->flash_isid);
6454                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
6455                 /* found duplicate ddb */
6456                 if (ret == QLA_SUCCESS)
6457                         goto exit_check;
6458         }
6459
6460         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6461                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
6462
6463                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
6464                 if (ret == QLA_SUCCESS) {
6465                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
6466                         if (rval == QLA_SUCCESS)
6467                                 ret = QLA_ERROR;
6468                         else
6469                                 ret = QLA_SUCCESS;
6470
6471                         goto exit_check;
6472                 }
6473         }
6474
6475 exit_check:
6476         if (fw_tddb)
6477                 vfree(fw_tddb);
6478         if (tmp_tddb)
6479                 vfree(tmp_tddb);
6480         return ret;
6481 }
6482
6483 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
6484 {
6485         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6486
6487         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6488                 list_del_init(&ddb_idx->list);
6489                 vfree(ddb_idx);
6490         }
6491 }
6492
6493 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
6494                                         struct dev_db_entry *fw_ddb_entry)
6495 {
6496         struct iscsi_endpoint *ep;
6497         struct sockaddr_in *addr;
6498         struct sockaddr_in6 *addr6;
6499         struct sockaddr *t_addr;
6500         struct sockaddr_storage *dst_addr;
6501         char *ip;
6502
6503         /* TODO: need to destroy on unload iscsi_endpoint*/
6504         dst_addr = vmalloc(sizeof(*dst_addr));
6505         if (!dst_addr)
6506                 return NULL;
6507
6508         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
6509                 t_addr = (struct sockaddr *)dst_addr;
6510                 t_addr->sa_family = AF_INET6;
6511                 addr6 = (struct sockaddr_in6 *)dst_addr;
6512                 ip = (char *)&addr6->sin6_addr;
6513                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
6514                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
6515
6516         } else {
6517                 t_addr = (struct sockaddr *)dst_addr;
6518                 t_addr->sa_family = AF_INET;
6519                 addr = (struct sockaddr_in *)dst_addr;
6520                 ip = (char *)&addr->sin_addr;
6521                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
6522                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
6523         }
6524
6525         ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
6526         vfree(dst_addr);
6527         return ep;
6528 }
6529
6530 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
6531 {
6532         if (ql4xdisablesysfsboot)
6533                 return QLA_SUCCESS;
6534         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
6535                 return QLA_ERROR;
6536         return QLA_SUCCESS;
6537 }
6538
6539 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
6540                                           struct ddb_entry *ddb_entry,
6541                                           uint16_t idx)
6542 {
6543         uint16_t def_timeout;
6544
6545         ddb_entry->ddb_type = FLASH_DDB;
6546         ddb_entry->fw_ddb_index = INVALID_ENTRY;
6547         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
6548         ddb_entry->ha = ha;
6549         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
6550         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
6551         ddb_entry->chap_tbl_idx = INVALID_ENTRY;
6552
6553         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6554         atomic_set(&ddb_entry->relogin_timer, 0);
6555         atomic_set(&ddb_entry->relogin_retry_count, 0);
6556         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
6557         ddb_entry->default_relogin_timeout =
6558                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
6559                 def_timeout : LOGIN_TOV;
6560         ddb_entry->default_time2wait =
6561                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
6562
6563         if (ql4xdisablesysfsboot &&
6564             (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
6565                 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
6566 }
6567
6568 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
6569 {
6570         uint32_t idx = 0;
6571         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
6572         uint32_t sts[MBOX_REG_COUNT];
6573         uint32_t ip_state;
6574         unsigned long wtime;
6575         int ret;
6576
6577         wtime = jiffies + (HZ * IP_CONFIG_TOV);
6578         do {
6579                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
6580                         if (ip_idx[idx] == -1)
6581                                 continue;
6582
6583                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
6584
6585                         if (ret == QLA_ERROR) {
6586                                 ip_idx[idx] = -1;
6587                                 continue;
6588                         }
6589
6590                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
6591
6592                         DEBUG2(ql4_printk(KERN_INFO, ha,
6593                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
6594                                           ip_idx[idx], ip_state));
6595                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
6596                             ip_state == IP_ADDRSTATE_INVALID ||
6597                             ip_state == IP_ADDRSTATE_PREFERRED ||
6598                             ip_state == IP_ADDRSTATE_DEPRICATED ||
6599                             ip_state == IP_ADDRSTATE_DISABLING)
6600                                 ip_idx[idx] = -1;
6601                 }
6602
6603                 /* Break if all IP states checked */
6604                 if ((ip_idx[0] == -1) &&
6605                     (ip_idx[1] == -1) &&
6606                     (ip_idx[2] == -1) &&
6607                     (ip_idx[3] == -1))
6608                         break;
6609                 schedule_timeout_uninterruptible(HZ);
6610         } while (time_after(wtime, jiffies));
6611 }
6612
6613 static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
6614                                   struct dev_db_entry *flash_ddb_entry)
6615 {
6616         uint16_t options = 0;
6617         size_t ip_len = IP_ADDR_LEN;
6618
6619         options = le16_to_cpu(fw_ddb_entry->options);
6620         if (options & DDB_OPT_IPV6_DEVICE)
6621                 ip_len = IPv6_ADDR_LEN;
6622
6623         if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
6624                 return QLA_ERROR;
6625
6626         if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
6627                    sizeof(fw_ddb_entry->isid)))
6628                 return QLA_ERROR;
6629
6630         if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
6631                    sizeof(fw_ddb_entry->port)))
6632                 return QLA_ERROR;
6633
6634         return QLA_SUCCESS;
6635 }
6636
6637 static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
6638                                      struct dev_db_entry *fw_ddb_entry,
6639                                      uint32_t fw_idx, uint32_t *flash_index)
6640 {
6641         struct dev_db_entry *flash_ddb_entry;
6642         dma_addr_t flash_ddb_entry_dma;
6643         uint32_t idx = 0;
6644         int max_ddbs;
6645         int ret = QLA_ERROR, status;
6646
6647         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6648                                      MAX_DEV_DB_ENTRIES;
6649
6650         flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6651                                          &flash_ddb_entry_dma);
6652         if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
6653                 ql4_printk(KERN_ERR, ha, "Out of memory\n");
6654                 goto exit_find_st_idx;
6655         }
6656
6657         status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6658                                           flash_ddb_entry_dma, fw_idx);
6659         if (status == QLA_SUCCESS) {
6660                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6661                 if (status == QLA_SUCCESS) {
6662                         *flash_index = fw_idx;
6663                         ret = QLA_SUCCESS;
6664                         goto exit_find_st_idx;
6665                 }
6666         }
6667
6668         for (idx = 0; idx < max_ddbs; idx++) {
6669                 status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6670                                                   flash_ddb_entry_dma, idx);
6671                 if (status == QLA_ERROR)
6672                         continue;
6673
6674                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6675                 if (status == QLA_SUCCESS) {
6676                         *flash_index = idx;
6677                         ret = QLA_SUCCESS;
6678                         goto exit_find_st_idx;
6679                 }
6680         }
6681
6682         if (idx == max_ddbs)
6683                 ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
6684                            fw_idx);
6685
6686 exit_find_st_idx:
6687         if (flash_ddb_entry)
6688                 dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
6689                               flash_ddb_entry_dma);
6690
6691         return ret;
6692 }
6693
6694 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
6695                                   struct list_head *list_st)
6696 {
6697         struct qla_ddb_index  *st_ddb_idx;
6698         int max_ddbs;
6699         int fw_idx_size;
6700         struct dev_db_entry *fw_ddb_entry;
6701         dma_addr_t fw_ddb_dma;
6702         int ret;
6703         uint32_t idx = 0, next_idx = 0;
6704         uint32_t state = 0, conn_err = 0;
6705         uint32_t flash_index = -1;
6706         uint16_t conn_id = 0;
6707
6708         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6709                                       &fw_ddb_dma);
6710         if (fw_ddb_entry == NULL) {
6711                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6712                 goto exit_st_list;
6713         }
6714
6715         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6716                                      MAX_DEV_DB_ENTRIES;
6717         fw_idx_size = sizeof(struct qla_ddb_index);
6718
6719         for (idx = 0; idx < max_ddbs; idx = next_idx) {
6720                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6721                                               NULL, &next_idx, &state,
6722                                               &conn_err, NULL, &conn_id);
6723                 if (ret == QLA_ERROR)
6724                         break;
6725
6726                 /* Ignore DDB if invalid state (unassigned) */
6727                 if (state == DDB_DS_UNASSIGNED)
6728                         goto continue_next_st;
6729
6730                 /* Check if ST, add to the list_st */
6731                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
6732                         goto continue_next_st;
6733
6734                 st_ddb_idx = vzalloc(fw_idx_size);
6735                 if (!st_ddb_idx)
6736                         break;
6737
6738                 ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
6739                                                 &flash_index);
6740                 if (ret == QLA_ERROR) {
6741                         ql4_printk(KERN_ERR, ha,
6742                                    "No flash entry for ST at idx [%d]\n", idx);
6743                         st_ddb_idx->flash_ddb_idx = idx;
6744                 } else {
6745                         ql4_printk(KERN_INFO, ha,
6746                                    "ST at idx [%d] is stored at flash [%d]\n",
6747                                    idx, flash_index);
6748                         st_ddb_idx->flash_ddb_idx = flash_index;
6749                 }
6750
6751                 st_ddb_idx->fw_ddb_idx = idx;
6752
6753                 list_add_tail(&st_ddb_idx->list, list_st);
6754 continue_next_st:
6755                 if (next_idx == 0)
6756                         break;
6757         }
6758
6759 exit_st_list:
6760         if (fw_ddb_entry)
6761                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6762 }
6763
6764 /**
6765  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
6766  * @ha: pointer to adapter structure
6767  * @list_ddb: List from which failed ddb to be removed
6768  *
6769  * Iterate over the list of DDBs and find and remove DDBs that are either in
6770  * no connection active state or failed state
6771  **/
6772 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
6773                                       struct list_head *list_ddb)
6774 {
6775         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6776         uint32_t next_idx = 0;
6777         uint32_t state = 0, conn_err = 0;
6778         int ret;
6779
6780         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6781                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
6782                                               NULL, 0, NULL, &next_idx, &state,
6783                                               &conn_err, NULL, NULL);
6784                 if (ret == QLA_ERROR)
6785                         continue;
6786
6787                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
6788                     state == DDB_DS_SESSION_FAILED) {
6789                         list_del_init(&ddb_idx->list);
6790                         vfree(ddb_idx);
6791                 }
6792         }
6793 }
6794
6795 static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
6796                                          struct ddb_entry *ddb_entry,
6797                                          struct dev_db_entry *fw_ddb_entry)
6798 {
6799         struct iscsi_cls_session *cls_sess;
6800         struct iscsi_session *sess;
6801         uint32_t max_ddbs = 0;
6802         uint16_t ddb_link = -1;
6803
6804         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6805                                      MAX_DEV_DB_ENTRIES;
6806
6807         cls_sess = ddb_entry->sess;
6808         sess = cls_sess->dd_data;
6809
6810         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6811         if (ddb_link < max_ddbs)
6812                 sess->discovery_parent_idx = ddb_link;
6813         else
6814                 sess->discovery_parent_idx = DDB_NO_LINK;
6815 }
6816
6817 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
6818                                    struct dev_db_entry *fw_ddb_entry,
6819                                    int is_reset, uint16_t idx)
6820 {
6821         struct iscsi_cls_session *cls_sess;
6822         struct iscsi_session *sess;
6823         struct iscsi_cls_conn *cls_conn;
6824         struct iscsi_endpoint *ep;
6825         uint16_t cmds_max = 32;
6826         uint16_t conn_id = 0;
6827         uint32_t initial_cmdsn = 0;
6828         int ret = QLA_SUCCESS;
6829
6830         struct ddb_entry *ddb_entry = NULL;
6831
6832         /* Create session object, with INVALID_ENTRY,
6833          * the targer_id would get set when we issue the login
6834          */
6835         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
6836                                        cmds_max, sizeof(struct ddb_entry),
6837                                        sizeof(struct ql4_task_data),
6838                                        initial_cmdsn, INVALID_ENTRY);
6839         if (!cls_sess) {
6840                 ret = QLA_ERROR;
6841                 goto exit_setup;
6842         }
6843
6844         /*
6845          * so calling module_put function to decrement the
6846          * reference count.
6847          **/
6848         module_put(qla4xxx_iscsi_transport.owner);
6849         sess = cls_sess->dd_data;
6850         ddb_entry = sess->dd_data;
6851         ddb_entry->sess = cls_sess;
6852
6853         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
6854         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
6855                sizeof(struct dev_db_entry));
6856
6857         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
6858
6859         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
6860
6861         if (!cls_conn) {
6862                 ret = QLA_ERROR;
6863                 goto exit_setup;
6864         }
6865
6866         ddb_entry->conn = cls_conn;
6867
6868         /* Setup ep, for displaying attributes in sysfs */
6869         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
6870         if (ep) {
6871                 ep->conn = cls_conn;
6872                 cls_conn->ep = ep;
6873         } else {
6874                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
6875                 ret = QLA_ERROR;
6876                 goto exit_setup;
6877         }
6878
6879         /* Update sess/conn params */
6880         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
6881         qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);
6882
6883         if (is_reset == RESET_ADAPTER) {
6884                 iscsi_block_session(cls_sess);
6885                 /* Use the relogin path to discover new devices
6886                  *  by short-circuting the logic of setting
6887                  *  timer to relogin - instead set the flags
6888                  *  to initiate login right away.
6889                  */
6890                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
6891                 set_bit(DF_RELOGIN, &ddb_entry->flags);
6892         }
6893
6894 exit_setup:
6895         return ret;
6896 }
6897
6898 static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
6899                                        struct list_head *list_ddb,
6900                                        struct dev_db_entry *fw_ddb_entry)
6901 {
6902         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6903         uint16_t ddb_link;
6904
6905         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6906
6907         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6908                 if (ddb_idx->fw_ddb_idx == ddb_link) {
6909                         DEBUG2(ql4_printk(KERN_INFO, ha,
6910                                           "Updating NT parent idx from [%d] to [%d]\n",
6911                                           ddb_link, ddb_idx->flash_ddb_idx));
6912                         fw_ddb_entry->ddb_link =
6913                                             cpu_to_le16(ddb_idx->flash_ddb_idx);
6914                         return;
6915                 }
6916         }
6917 }
6918
6919 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
6920                                   struct list_head *list_nt,
6921                                   struct list_head *list_st,
6922                                   int is_reset)
6923 {
6924         struct dev_db_entry *fw_ddb_entry;
6925         struct ddb_entry *ddb_entry = NULL;
6926         dma_addr_t fw_ddb_dma;
6927         int max_ddbs;
6928         int fw_idx_size;
6929         int ret;
6930         uint32_t idx = 0, next_idx = 0;
6931         uint32_t state = 0, conn_err = 0;
6932         uint32_t ddb_idx = -1;
6933         uint16_t conn_id = 0;
6934         uint16_t ddb_link = -1;
6935         struct qla_ddb_index  *nt_ddb_idx;
6936
6937         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6938                                       &fw_ddb_dma);
6939         if (fw_ddb_entry == NULL) {
6940                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6941                 goto exit_nt_list;
6942         }
6943         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6944                                      MAX_DEV_DB_ENTRIES;
6945         fw_idx_size = sizeof(struct qla_ddb_index);
6946
6947         for (idx = 0; idx < max_ddbs; idx = next_idx) {
6948                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6949                                               NULL, &next_idx, &state,
6950                                               &conn_err, NULL, &conn_id);
6951                 if (ret == QLA_ERROR)
6952                         break;
6953
6954                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
6955                         goto continue_next_nt;
6956
6957                 /* Check if NT, then add to list it */
6958                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
6959                         goto continue_next_nt;
6960
6961                 ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6962                 if (ddb_link < max_ddbs)
6963                         qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);
6964
6965                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
6966                     state == DDB_DS_SESSION_FAILED) &&
6967                     (is_reset == INIT_ADAPTER))
6968                         goto continue_next_nt;
6969
6970                 DEBUG2(ql4_printk(KERN_INFO, ha,
6971                                   "Adding  DDB to session = 0x%x\n", idx));
6972
6973                 if (is_reset == INIT_ADAPTER) {
6974                         nt_ddb_idx = vmalloc(fw_idx_size);
6975                         if (!nt_ddb_idx)
6976                                 break;
6977
6978                         nt_ddb_idx->fw_ddb_idx = idx;
6979
6980                         /* Copy original isid as it may get updated in function
6981                          * qla4xxx_update_isid(). We need original isid in
6982                          * function qla4xxx_compare_tuple_ddb to find duplicate
6983                          * target */
6984                         memcpy(&nt_ddb_idx->flash_isid[0],
6985                                &fw_ddb_entry->isid[0],
6986                                sizeof(nt_ddb_idx->flash_isid));
6987
6988                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
6989                                                           fw_ddb_entry);
6990                         if (ret == QLA_SUCCESS) {
6991                                 /* free nt_ddb_idx and do not add to list_nt */
6992                                 vfree(nt_ddb_idx);
6993                                 goto continue_next_nt;
6994                         }
6995
6996                         /* Copy updated isid */
6997                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
6998                                sizeof(struct dev_db_entry));
6999
7000                         list_add_tail(&nt_ddb_idx->list, list_nt);
7001                 } else if (is_reset == RESET_ADAPTER) {
7002                         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
7003                                                         &ddb_idx);
7004                         if (ret == QLA_SUCCESS) {
7005                                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
7006                                                                        ddb_idx);
7007                                 if (ddb_entry != NULL)
7008                                         qla4xxx_update_sess_disc_idx(ha,
7009                                                                      ddb_entry,
7010                                                                   fw_ddb_entry);
7011                                 goto continue_next_nt;
7012                         }
7013                 }
7014
7015                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
7016                 if (ret == QLA_ERROR)
7017                         goto exit_nt_list;
7018
7019 continue_next_nt:
7020                 if (next_idx == 0)
7021                         break;
7022         }
7023
7024 exit_nt_list:
7025         if (fw_ddb_entry)
7026                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7027 }
7028
7029 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
7030                                       struct list_head *list_nt,
7031                                       uint16_t target_id)
7032 {
7033         struct dev_db_entry *fw_ddb_entry;
7034         dma_addr_t fw_ddb_dma;
7035         int max_ddbs;
7036         int fw_idx_size;
7037         int ret;
7038         uint32_t idx = 0, next_idx = 0;
7039         uint32_t state = 0, conn_err = 0;
7040         uint16_t conn_id = 0;
7041         struct qla_ddb_index  *nt_ddb_idx;
7042
7043         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7044                                       &fw_ddb_dma);
7045         if (fw_ddb_entry == NULL) {
7046                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7047                 goto exit_new_nt_list;
7048         }
7049         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7050                                      MAX_DEV_DB_ENTRIES;
7051         fw_idx_size = sizeof(struct qla_ddb_index);
7052
7053         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7054                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7055                                               NULL, &next_idx, &state,
7056                                               &conn_err, NULL, &conn_id);
7057                 if (ret == QLA_ERROR)
7058                         break;
7059
7060                 /* Check if NT, then add it to list */
7061                 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7062                         goto continue_next_new_nt;
7063
7064                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
7065                         goto continue_next_new_nt;
7066
7067                 DEBUG2(ql4_printk(KERN_INFO, ha,
7068                                   "Adding  DDB to session = 0x%x\n", idx));
7069
7070                 nt_ddb_idx = vmalloc(fw_idx_size);
7071                 if (!nt_ddb_idx)
7072                         break;
7073
7074                 nt_ddb_idx->fw_ddb_idx = idx;
7075
7076                 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7077                 if (ret == QLA_SUCCESS) {
7078                         /* free nt_ddb_idx and do not add to list_nt */
7079                         vfree(nt_ddb_idx);
7080                         goto continue_next_new_nt;
7081                 }
7082
7083                 if (target_id < max_ddbs)
7084                         fw_ddb_entry->ddb_link = cpu_to_le16(target_id);
7085
7086                 list_add_tail(&nt_ddb_idx->list, list_nt);
7087
7088                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7089                                               idx);
7090                 if (ret == QLA_ERROR)
7091                         goto exit_new_nt_list;
7092
7093 continue_next_new_nt:
7094                 if (next_idx == 0)
7095                         break;
7096         }
7097
7098 exit_new_nt_list:
7099         if (fw_ddb_entry)
7100                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7101 }
7102
7103 /**
7104  * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
7105  * @dev: dev associated with the sysfs entry
7106  * @data: pointer to flashnode session object
7107  *
7108  * Returns:
7109  *      1: if flashnode entry is non-persistent
7110  *      0: if flashnode entry is persistent
7111  **/
7112 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
7113 {
7114         struct iscsi_bus_flash_session *fnode_sess;
7115
7116         if (!iscsi_flashnode_bus_match(dev, NULL))
7117                 return 0;
7118
7119         fnode_sess = iscsi_dev_to_flash_session(dev);
7120
7121         return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
7122 }
7123
7124 /**
7125  * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
7126  * @ha: pointer to host
7127  * @fw_ddb_entry: flash ddb data
7128  * @idx: target index
7129  * @user: if set then this call is made from userland else from kernel
7130  *
7131  * Returns:
7132  * On sucess: QLA_SUCCESS
7133  * On failure: QLA_ERROR
7134  *
7135  * This create separate sysfs entries for session and connection attributes of
7136  * the given fw ddb entry.
7137  * If this is invoked as a result of a userspace call then the entry is marked
7138  * as nonpersistent using flash_state field.
7139  **/
7140 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
7141                                         struct dev_db_entry *fw_ddb_entry,
7142                                         uint16_t *idx, int user)
7143 {
7144         struct iscsi_bus_flash_session *fnode_sess = NULL;
7145         struct iscsi_bus_flash_conn *fnode_conn = NULL;
7146         int rc = QLA_ERROR;
7147
7148         fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
7149                                                  &qla4xxx_iscsi_transport, 0);
7150         if (!fnode_sess) {
7151                 ql4_printk(KERN_ERR, ha,
7152                            "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
7153                            __func__, *idx, ha->host_no);
7154                 goto exit_tgt_create;
7155         }
7156
7157         fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
7158                                                  &qla4xxx_iscsi_transport, 0);
7159         if (!fnode_conn) {
7160                 ql4_printk(KERN_ERR, ha,
7161                            "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
7162                            __func__, *idx, ha->host_no);
7163                 goto free_sess;
7164         }
7165
7166         if (user) {
7167                 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
7168         } else {
7169                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7170
7171                 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
7172                         fnode_sess->is_boot_target = 1;
7173                 else
7174                         fnode_sess->is_boot_target = 0;
7175         }
7176
7177         rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
7178                                            fw_ddb_entry);
7179
7180         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7181                    __func__, fnode_sess->dev.kobj.name);
7182
7183         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7184                    __func__, fnode_conn->dev.kobj.name);
7185
7186         return QLA_SUCCESS;
7187
7188 free_sess:
7189         iscsi_destroy_flashnode_sess(fnode_sess);
7190
7191 exit_tgt_create:
7192         return QLA_ERROR;
7193 }
7194
7195 /**
7196  * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
7197  * @shost: pointer to host
7198  * @buf: type of ddb entry (ipv4/ipv6)
7199  * @len: length of buf
7200  *
7201  * This creates new ddb entry in the flash by finding first free index and
7202  * storing default ddb there. And then create sysfs entry for the new ddb entry.
7203  **/
7204 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
7205                                  int len)
7206 {
7207         struct scsi_qla_host *ha = to_qla_host(shost);
7208         struct dev_db_entry *fw_ddb_entry = NULL;
7209         dma_addr_t fw_ddb_entry_dma;
7210         struct device *dev;
7211         uint16_t idx = 0;
7212         uint16_t max_ddbs = 0;
7213         uint32_t options = 0;
7214         uint32_t rval = QLA_ERROR;
7215
7216         if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
7217             strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
7218                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
7219                                   __func__));
7220                 goto exit_ddb_add;
7221         }
7222
7223         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
7224                                      MAX_DEV_DB_ENTRIES;
7225
7226         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7227                                           &fw_ddb_entry_dma, GFP_KERNEL);
7228         if (!fw_ddb_entry) {
7229                 DEBUG2(ql4_printk(KERN_ERR, ha,
7230                                   "%s: Unable to allocate dma buffer\n",
7231                                   __func__));
7232                 goto exit_ddb_add;
7233         }
7234
7235         dev = iscsi_find_flashnode_sess(ha->host, NULL,
7236                                         qla4xxx_sysfs_ddb_is_non_persistent);
7237         if (dev) {
7238                 ql4_printk(KERN_ERR, ha,
7239                            "%s: A non-persistent entry %s found\n",
7240                            __func__, dev->kobj.name);
7241                 put_device(dev);
7242                 goto exit_ddb_add;
7243         }
7244
7245         /* Index 0 and 1 are reserved for boot target entries */
7246         for (idx = 2; idx < max_ddbs; idx++) {
7247                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
7248                                              fw_ddb_entry_dma, idx))
7249                         break;
7250         }
7251
7252         if (idx == max_ddbs)
7253                 goto exit_ddb_add;
7254
7255         if (!strncasecmp("ipv6", buf, 4))
7256                 options |= IPV6_DEFAULT_DDB_ENTRY;
7257
7258         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7259         if (rval == QLA_ERROR)
7260                 goto exit_ddb_add;
7261
7262         rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
7263
7264 exit_ddb_add:
7265         if (fw_ddb_entry)
7266                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7267                                   fw_ddb_entry, fw_ddb_entry_dma);
7268         if (rval == QLA_SUCCESS)
7269                 return idx;
7270         else
7271                 return -EIO;
7272 }
7273
7274 /**
7275  * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
7276  * @fnode_sess: pointer to session attrs of flash ddb entry
7277  * @fnode_conn: pointer to connection attrs of flash ddb entry
7278  *
7279  * This writes the contents of target ddb buffer to Flash with a valid cookie
7280  * value in order to make the ddb entry persistent.
7281  **/
7282 static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
7283                                     struct iscsi_bus_flash_conn *fnode_conn)
7284 {
7285         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7286         struct scsi_qla_host *ha = to_qla_host(shost);
7287         uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
7288         struct dev_db_entry *fw_ddb_entry = NULL;
7289         dma_addr_t fw_ddb_entry_dma;
7290         uint32_t options = 0;
7291         int rval = 0;
7292
7293         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7294                                           &fw_ddb_entry_dma, GFP_KERNEL);
7295         if (!fw_ddb_entry) {
7296                 DEBUG2(ql4_printk(KERN_ERR, ha,
7297                                   "%s: Unable to allocate dma buffer\n",
7298                                   __func__));
7299                 rval = -ENOMEM;
7300                 goto exit_ddb_apply;
7301         }
7302
7303         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7304                 options |= IPV6_DEFAULT_DDB_ENTRY;
7305
7306         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7307         if (rval == QLA_ERROR)
7308                 goto exit_ddb_apply;
7309
7310         dev_db_start_offset += (fnode_sess->target_id *
7311                                 sizeof(*fw_ddb_entry));
7312
7313         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7314         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7315
7316         rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
7317                                  sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
7318
7319         if (rval == QLA_SUCCESS) {
7320                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7321                 ql4_printk(KERN_INFO, ha,
7322                            "%s: flash node %u of host %lu written to flash\n",
7323                            __func__, fnode_sess->target_id, ha->host_no);
7324         } else {
7325                 rval = -EIO;
7326                 ql4_printk(KERN_ERR, ha,
7327                            "%s: Error while writing flash node %u of host %lu to flash\n",
7328                            __func__, fnode_sess->target_id, ha->host_no);
7329         }
7330
7331 exit_ddb_apply:
7332         if (fw_ddb_entry)
7333                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7334                                   fw_ddb_entry, fw_ddb_entry_dma);
7335         return rval;
7336 }
7337
7338 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
7339                                            struct dev_db_entry *fw_ddb_entry,
7340                                            uint16_t idx)
7341 {
7342         struct dev_db_entry *ddb_entry = NULL;
7343         dma_addr_t ddb_entry_dma;
7344         unsigned long wtime;
7345         uint32_t mbx_sts = 0;
7346         uint32_t state = 0, conn_err = 0;
7347         uint16_t tmo = 0;
7348         int ret = 0;
7349
7350         ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7351                                        &ddb_entry_dma, GFP_KERNEL);
7352         if (!ddb_entry) {
7353                 DEBUG2(ql4_printk(KERN_ERR, ha,
7354                                   "%s: Unable to allocate dma buffer\n",
7355                                   __func__));
7356                 return QLA_ERROR;
7357         }
7358
7359         memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
7360
7361         ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
7362         if (ret != QLA_SUCCESS) {
7363                 DEBUG2(ql4_printk(KERN_ERR, ha,
7364                                   "%s: Unable to set ddb entry for index %d\n",
7365                                   __func__, idx));
7366                 goto exit_ddb_conn_open;
7367         }
7368
7369         qla4xxx_conn_open(ha, idx);
7370
7371         /* To ensure that sendtargets is done, wait for at least 12 secs */
7372         tmo = ((ha->def_timeout > LOGIN_TOV) &&
7373                (ha->def_timeout < LOGIN_TOV * 10) ?
7374                ha->def_timeout : LOGIN_TOV);
7375
7376         DEBUG2(ql4_printk(KERN_INFO, ha,
7377                           "Default time to wait for login to ddb %d\n", tmo));
7378
7379         wtime = jiffies + (HZ * tmo);
7380         do {
7381                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
7382                                               NULL, &state, &conn_err, NULL,
7383                                               NULL);
7384                 if (ret == QLA_ERROR)
7385                         continue;
7386
7387                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
7388                     state == DDB_DS_SESSION_FAILED)
7389                         break;
7390
7391                 schedule_timeout_uninterruptible(HZ / 10);
7392         } while (time_after(wtime, jiffies));
7393
7394 exit_ddb_conn_open:
7395         if (ddb_entry)
7396                 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7397                                   ddb_entry, ddb_entry_dma);
7398         return ret;
7399 }
7400
7401 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
7402                                 struct dev_db_entry *fw_ddb_entry,
7403                                 uint16_t target_id)
7404 {
7405         struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
7406         struct list_head list_nt;
7407         uint16_t ddb_index;
7408         int ret = 0;
7409
7410         if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
7411                 ql4_printk(KERN_WARNING, ha,
7412                            "%s: A discovery already in progress!\n", __func__);
7413                 return QLA_ERROR;
7414         }
7415
7416         INIT_LIST_HEAD(&list_nt);
7417
7418         set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7419
7420         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
7421         if (ret == QLA_ERROR)
7422                 goto exit_login_st_clr_bit;
7423
7424         ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
7425         if (ret == QLA_ERROR)
7426                 goto exit_login_st;
7427
7428         qla4xxx_build_new_nt_list(ha, &list_nt, target_id);
7429
7430         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
7431                 list_del_init(&ddb_idx->list);
7432                 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
7433                 vfree(ddb_idx);
7434         }
7435
7436 exit_login_st:
7437         if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
7438                 ql4_printk(KERN_ERR, ha,
7439                            "Unable to clear DDB index = 0x%x\n", ddb_index);
7440         }
7441
7442         clear_bit(ddb_index, ha->ddb_idx_map);
7443
7444 exit_login_st_clr_bit:
7445         clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7446         return ret;
7447 }
7448
7449 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
7450                                 struct dev_db_entry *fw_ddb_entry,
7451                                 uint16_t idx)
7452 {
7453         int ret = QLA_ERROR;
7454
7455         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7456         if (ret != QLA_SUCCESS)
7457                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7458                                               idx);
7459         else
7460                 ret = -EPERM;
7461
7462         return ret;
7463 }
7464
7465 /**
7466  * qla4xxx_sysfs_ddb_login - Login to the specified target
7467  * @fnode_sess: pointer to session attrs of flash ddb entry
7468  * @fnode_conn: pointer to connection attrs of flash ddb entry
7469  *
7470  * This logs in to the specified target
7471  **/
7472 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
7473                                    struct iscsi_bus_flash_conn *fnode_conn)
7474 {
7475         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7476         struct scsi_qla_host *ha = to_qla_host(shost);
7477         struct dev_db_entry *fw_ddb_entry = NULL;
7478         dma_addr_t fw_ddb_entry_dma;
7479         uint32_t options = 0;
7480         int ret = 0;
7481
7482         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
7483                 ql4_printk(KERN_ERR, ha,
7484                            "%s: Target info is not persistent\n", __func__);
7485                 ret = -EIO;
7486                 goto exit_ddb_login;
7487         }
7488
7489         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7490                                           &fw_ddb_entry_dma, GFP_KERNEL);
7491         if (!fw_ddb_entry) {
7492                 DEBUG2(ql4_printk(KERN_ERR, ha,
7493                                   "%s: Unable to allocate dma buffer\n",
7494                                   __func__));
7495                 ret = -ENOMEM;
7496                 goto exit_ddb_login;
7497         }
7498
7499         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7500                 options |= IPV6_DEFAULT_DDB_ENTRY;
7501
7502         ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7503         if (ret == QLA_ERROR)
7504                 goto exit_ddb_login;
7505
7506         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7507         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7508
7509         if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7510                 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry,
7511                                            fnode_sess->target_id);
7512         else
7513                 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
7514                                            fnode_sess->target_id);
7515
7516         if (ret > 0)
7517                 ret = -EIO;
7518
7519 exit_ddb_login:
7520         if (fw_ddb_entry)
7521                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7522                                   fw_ddb_entry, fw_ddb_entry_dma);
7523         return ret;
7524 }
7525
7526 /**
7527  * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
7528  * @cls_sess: pointer to session to be logged out
7529  *
7530  * This performs session log out from the specified target
7531  **/
7532 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
7533 {
7534         struct iscsi_session *sess;
7535         struct ddb_entry *ddb_entry = NULL;
7536         struct scsi_qla_host *ha;
7537         struct dev_db_entry *fw_ddb_entry = NULL;
7538         dma_addr_t fw_ddb_entry_dma;
7539         unsigned long flags;
7540         unsigned long wtime;
7541         uint32_t ddb_state;
7542         int options;
7543         int ret = 0;
7544
7545         sess = cls_sess->dd_data;
7546         ddb_entry = sess->dd_data;
7547         ha = ddb_entry->ha;
7548
7549         if (ddb_entry->ddb_type != FLASH_DDB) {
7550                 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
7551                            __func__);
7552                 ret = -ENXIO;
7553                 goto exit_ddb_logout;
7554         }
7555
7556         if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
7557                 ql4_printk(KERN_ERR, ha,
7558                            "%s: Logout from boot target entry is not permitted.\n",
7559                            __func__);
7560                 ret = -EPERM;
7561                 goto exit_ddb_logout;
7562         }
7563
7564         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7565                                           &fw_ddb_entry_dma, GFP_KERNEL);
7566         if (!fw_ddb_entry) {
7567                 ql4_printk(KERN_ERR, ha,
7568                            "%s: Unable to allocate dma buffer\n", __func__);
7569                 ret = -ENOMEM;
7570                 goto exit_ddb_logout;
7571         }
7572
7573         if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
7574                 goto ddb_logout_init;
7575
7576         ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7577                                       fw_ddb_entry, fw_ddb_entry_dma,
7578                                       NULL, NULL, &ddb_state, NULL,
7579                                       NULL, NULL);
7580         if (ret == QLA_ERROR)
7581                 goto ddb_logout_init;
7582
7583         if (ddb_state == DDB_DS_SESSION_ACTIVE)
7584                 goto ddb_logout_init;
7585
7586         /* wait until next relogin is triggered using DF_RELOGIN and
7587          * clear DF_RELOGIN to avoid invocation of further relogin
7588          */
7589         wtime = jiffies + (HZ * RELOGIN_TOV);
7590         do {
7591                 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
7592                         goto ddb_logout_init;
7593
7594                 schedule_timeout_uninterruptible(HZ);
7595         } while ((time_after(wtime, jiffies)));
7596
7597 ddb_logout_init:
7598         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
7599         atomic_set(&ddb_entry->relogin_timer, 0);
7600
7601         options = LOGOUT_OPTION_CLOSE_SESSION;
7602         qla4xxx_session_logout_ddb(ha, ddb_entry, options);
7603
7604         memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
7605         wtime = jiffies + (HZ * LOGOUT_TOV);
7606         do {
7607                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7608                                               fw_ddb_entry, fw_ddb_entry_dma,
7609                                               NULL, NULL, &ddb_state, NULL,
7610                                               NULL, NULL);
7611                 if (ret == QLA_ERROR)
7612                         goto ddb_logout_clr_sess;
7613
7614                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
7615                     (ddb_state == DDB_DS_SESSION_FAILED))
7616                         goto ddb_logout_clr_sess;
7617
7618                 schedule_timeout_uninterruptible(HZ);
7619         } while ((time_after(wtime, jiffies)));
7620
7621 ddb_logout_clr_sess:
7622         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7623         /*
7624          * we have decremented the reference count of the driver
7625          * when we setup the session to have the driver unload
7626          * to be seamless without actually destroying the
7627          * session
7628          **/
7629         try_module_get(qla4xxx_iscsi_transport.owner);
7630         iscsi_destroy_endpoint(ddb_entry->conn->ep);
7631
7632         spin_lock_irqsave(&ha->hardware_lock, flags);
7633         qla4xxx_free_ddb(ha, ddb_entry);
7634         clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
7635         spin_unlock_irqrestore(&ha->hardware_lock, flags);
7636
7637         iscsi_session_teardown(ddb_entry->sess);
7638
7639         clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
7640         ret = QLA_SUCCESS;
7641
7642 exit_ddb_logout:
7643         if (fw_ddb_entry)
7644                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7645                                   fw_ddb_entry, fw_ddb_entry_dma);
7646         return ret;
7647 }
7648
7649 /**
7650  * qla4xxx_sysfs_ddb_logout - Logout from the specified target
7651  * @fnode_sess: pointer to session attrs of flash ddb entry
7652  * @fnode_conn: pointer to connection attrs of flash ddb entry
7653  *
7654  * This performs log out from the specified target
7655  **/
7656 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
7657                                     struct iscsi_bus_flash_conn *fnode_conn)
7658 {
7659         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7660         struct scsi_qla_host *ha = to_qla_host(shost);
7661         struct ql4_tuple_ddb *flash_tddb = NULL;
7662         struct ql4_tuple_ddb *tmp_tddb = NULL;
7663         struct dev_db_entry *fw_ddb_entry = NULL;
7664         struct ddb_entry *ddb_entry = NULL;
7665         dma_addr_t fw_ddb_dma;
7666         uint32_t next_idx = 0;
7667         uint32_t state = 0, conn_err = 0;
7668         uint16_t conn_id = 0;
7669         int idx, index;
7670         int status, ret = 0;
7671
7672         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7673                                       &fw_ddb_dma);
7674         if (fw_ddb_entry == NULL) {
7675                 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
7676                 ret = -ENOMEM;
7677                 goto exit_ddb_logout;
7678         }
7679
7680         flash_tddb = vzalloc(sizeof(*flash_tddb));
7681         if (!flash_tddb) {
7682                 ql4_printk(KERN_WARNING, ha,
7683                            "%s:Memory Allocation failed.\n", __func__);
7684                 ret = -ENOMEM;
7685                 goto exit_ddb_logout;
7686         }
7687
7688         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
7689         if (!tmp_tddb) {
7690                 ql4_printk(KERN_WARNING, ha,
7691                            "%s:Memory Allocation failed.\n", __func__);
7692                 ret = -ENOMEM;
7693                 goto exit_ddb_logout;
7694         }
7695
7696         if (!fnode_sess->targetname) {
7697                 ql4_printk(KERN_ERR, ha,
7698                            "%s:Cannot logout from SendTarget entry\n",
7699                            __func__);
7700                 ret = -EPERM;
7701                 goto exit_ddb_logout;
7702         }
7703
7704         if (fnode_sess->is_boot_target) {
7705                 ql4_printk(KERN_ERR, ha,
7706                            "%s: Logout from boot target entry is not permitted.\n",
7707                            __func__);
7708                 ret = -EPERM;
7709                 goto exit_ddb_logout;
7710         }
7711
7712         strncpy(flash_tddb->iscsi_name, fnode_sess->targetname,
7713                 ISCSI_NAME_SIZE);
7714
7715         if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7716                 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
7717         else
7718                 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
7719
7720         flash_tddb->tpgt = fnode_sess->tpgt;
7721         flash_tddb->port = fnode_conn->port;
7722
7723         COPY_ISID(flash_tddb->isid, fnode_sess->isid);
7724
7725         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7726                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7727                 if (ddb_entry == NULL)
7728                         continue;
7729
7730                 if (ddb_entry->ddb_type != FLASH_DDB)
7731                         continue;
7732
7733                 index = ddb_entry->sess->target_id;
7734                 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
7735                                                  fw_ddb_dma, NULL, &next_idx,
7736                                                  &state, &conn_err, NULL,
7737                                                  &conn_id);
7738                 if (status == QLA_ERROR) {
7739                         ret = -ENOMEM;
7740                         break;
7741                 }
7742
7743                 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
7744
7745                 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
7746                                                    true);
7747                 if (status == QLA_SUCCESS) {
7748                         ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
7749                         break;
7750                 }
7751         }
7752
7753         if (idx == MAX_DDB_ENTRIES)
7754                 ret = -ESRCH;
7755
7756 exit_ddb_logout:
7757         if (flash_tddb)
7758                 vfree(flash_tddb);
7759         if (tmp_tddb)
7760                 vfree(tmp_tddb);
7761         if (fw_ddb_entry)
7762                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7763
7764         return ret;
7765 }
7766
7767 static int
7768 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
7769                             int param, char *buf)
7770 {
7771         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7772         struct scsi_qla_host *ha = to_qla_host(shost);
7773         struct iscsi_bus_flash_conn *fnode_conn;
7774         struct ql4_chap_table chap_tbl;
7775         struct device *dev;
7776         int parent_type;
7777         int rc = 0;
7778
7779         dev = iscsi_find_flashnode_conn(fnode_sess);
7780         if (!dev)
7781                 return -EIO;
7782
7783         fnode_conn = iscsi_dev_to_flash_conn(dev);
7784
7785         switch (param) {
7786         case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
7787                 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
7788                 break;
7789         case ISCSI_FLASHNODE_PORTAL_TYPE:
7790                 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
7791                 break;
7792         case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
7793                 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
7794                 break;
7795         case ISCSI_FLASHNODE_DISCOVERY_SESS:
7796                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
7797                 break;
7798         case ISCSI_FLASHNODE_ENTRY_EN:
7799                 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
7800                 break;
7801         case ISCSI_FLASHNODE_HDR_DGST_EN:
7802                 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
7803                 break;
7804         case ISCSI_FLASHNODE_DATA_DGST_EN:
7805                 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
7806                 break;
7807         case ISCSI_FLASHNODE_IMM_DATA_EN:
7808                 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
7809                 break;
7810         case ISCSI_FLASHNODE_INITIAL_R2T_EN:
7811                 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
7812                 break;
7813         case ISCSI_FLASHNODE_DATASEQ_INORDER:
7814                 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
7815                 break;
7816         case ISCSI_FLASHNODE_PDU_INORDER:
7817                 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
7818                 break;
7819         case ISCSI_FLASHNODE_CHAP_AUTH_EN:
7820                 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
7821                 break;
7822         case ISCSI_FLASHNODE_SNACK_REQ_EN:
7823                 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
7824                 break;
7825         case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
7826                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
7827                 break;
7828         case ISCSI_FLASHNODE_BIDI_CHAP_EN:
7829                 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
7830                 break;
7831         case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
7832                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
7833                 break;
7834         case ISCSI_FLASHNODE_ERL:
7835                 rc = sprintf(buf, "%u\n", fnode_sess->erl);
7836                 break;
7837         case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
7838                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
7839                 break;
7840         case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
7841                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
7842                 break;
7843         case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
7844                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
7845                 break;
7846         case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
7847                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
7848                 break;
7849         case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
7850                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
7851                 break;
7852         case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
7853                 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
7854                 break;
7855         case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
7856                 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
7857                 break;
7858         case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
7859                 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
7860                 break;
7861         case ISCSI_FLASHNODE_FIRST_BURST:
7862                 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
7863                 break;
7864         case ISCSI_FLASHNODE_DEF_TIME2WAIT:
7865                 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
7866                 break;
7867         case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
7868                 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
7869                 break;
7870         case ISCSI_FLASHNODE_MAX_R2T:
7871                 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
7872                 break;
7873         case ISCSI_FLASHNODE_KEEPALIVE_TMO:
7874                 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
7875                 break;
7876         case ISCSI_FLASHNODE_ISID:
7877                 rc = sprintf(buf, "%02x%02x%02x%02x%02x%02x\n",
7878                              fnode_sess->isid[0], fnode_sess->isid[1],
7879                              fnode_sess->isid[2], fnode_sess->isid[3],
7880                              fnode_sess->isid[4], fnode_sess->isid[5]);
7881                 break;
7882         case ISCSI_FLASHNODE_TSID:
7883                 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
7884                 break;
7885         case ISCSI_FLASHNODE_PORT:
7886                 rc = sprintf(buf, "%d\n", fnode_conn->port);
7887                 break;
7888         case ISCSI_FLASHNODE_MAX_BURST:
7889                 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
7890                 break;
7891         case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
7892                 rc = sprintf(buf, "%u\n",
7893                              fnode_sess->default_taskmgmt_timeout);
7894                 break;
7895         case ISCSI_FLASHNODE_IPADDR:
7896                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7897                         rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
7898                 else
7899                         rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
7900                 break;
7901         case ISCSI_FLASHNODE_ALIAS:
7902                 if (fnode_sess->targetalias)
7903                         rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
7904                 else
7905                         rc = sprintf(buf, "\n");
7906                 break;
7907         case ISCSI_FLASHNODE_REDIRECT_IPADDR:
7908                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7909                         rc = sprintf(buf, "%pI6\n",
7910                                      fnode_conn->redirect_ipaddr);
7911                 else
7912                         rc = sprintf(buf, "%pI4\n",
7913                                      fnode_conn->redirect_ipaddr);
7914                 break;
7915         case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
7916                 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
7917                 break;
7918         case ISCSI_FLASHNODE_LOCAL_PORT:
7919                 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
7920                 break;
7921         case ISCSI_FLASHNODE_IPV4_TOS:
7922                 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
7923                 break;
7924         case ISCSI_FLASHNODE_IPV6_TC:
7925                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7926                         rc = sprintf(buf, "%u\n",
7927                                      fnode_conn->ipv6_traffic_class);
7928                 else
7929                         rc = sprintf(buf, "\n");
7930                 break;
7931         case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
7932                 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
7933                 break;
7934         case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
7935                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7936                         rc = sprintf(buf, "%pI6\n",
7937                                      fnode_conn->link_local_ipv6_addr);
7938                 else
7939                         rc = sprintf(buf, "\n");
7940                 break;
7941         case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
7942                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
7943                 break;
7944         case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
7945                 if (fnode_sess->discovery_parent_type == DDB_ISNS)
7946                         parent_type = ISCSI_DISC_PARENT_ISNS;
7947                 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
7948                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
7949                 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
7950                         parent_type = ISCSI_DISC_PARENT_SENDTGT;
7951                 else
7952                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
7953
7954                 rc = sprintf(buf, "%s\n",
7955                              iscsi_get_discovery_parent_name(parent_type));
7956                 break;
7957         case ISCSI_FLASHNODE_NAME:
7958                 if (fnode_sess->targetname)
7959                         rc = sprintf(buf, "%s\n", fnode_sess->targetname);
7960                 else
7961                         rc = sprintf(buf, "\n");
7962                 break;
7963         case ISCSI_FLASHNODE_TPGT:
7964                 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
7965                 break;
7966         case ISCSI_FLASHNODE_TCP_XMIT_WSF:
7967                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
7968                 break;
7969         case ISCSI_FLASHNODE_TCP_RECV_WSF:
7970                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
7971                 break;
7972         case ISCSI_FLASHNODE_CHAP_OUT_IDX:
7973                 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
7974                 break;
7975         case ISCSI_FLASHNODE_USERNAME:
7976                 if (fnode_sess->chap_auth_en) {
7977                         qla4xxx_get_uni_chap_at_index(ha,
7978                                                       chap_tbl.name,
7979                                                       chap_tbl.secret,
7980                                                       fnode_sess->chap_out_idx);
7981                         rc = sprintf(buf, "%s\n", chap_tbl.name);
7982                 } else {
7983                         rc = sprintf(buf, "\n");
7984                 }
7985                 break;
7986         case ISCSI_FLASHNODE_PASSWORD:
7987                 if (fnode_sess->chap_auth_en) {
7988                         qla4xxx_get_uni_chap_at_index(ha,
7989                                                       chap_tbl.name,
7990                                                       chap_tbl.secret,
7991                                                       fnode_sess->chap_out_idx);
7992                         rc = sprintf(buf, "%s\n", chap_tbl.secret);
7993                 } else {
7994                         rc = sprintf(buf, "\n");
7995                 }
7996                 break;
7997         case ISCSI_FLASHNODE_STATSN:
7998                 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
7999                 break;
8000         case ISCSI_FLASHNODE_EXP_STATSN:
8001                 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
8002                 break;
8003         case ISCSI_FLASHNODE_IS_BOOT_TGT:
8004                 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
8005                 break;
8006         default:
8007                 rc = -ENOSYS;
8008                 break;
8009         }
8010
8011         put_device(dev);
8012         return rc;
8013 }
8014
8015 /**
8016  * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
8017  * @fnode_sess: pointer to session attrs of flash ddb entry
8018  * @fnode_conn: pointer to connection attrs of flash ddb entry
8019  * @data: Parameters and their values to update
8020  * @len: len of data
8021  *
8022  * This sets the parameter of flash ddb entry and writes them to flash
8023  **/
8024 static int
8025 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
8026                             struct iscsi_bus_flash_conn *fnode_conn,
8027                             void *data, int len)
8028 {
8029         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8030         struct scsi_qla_host *ha = to_qla_host(shost);
8031         struct iscsi_flashnode_param_info *fnode_param;
8032         struct ql4_chap_table chap_tbl;
8033         struct nlattr *attr;
8034         uint16_t chap_out_idx = INVALID_ENTRY;
8035         int rc = QLA_ERROR;
8036         uint32_t rem = len;
8037
8038         memset((void *)&chap_tbl, 0, sizeof(chap_tbl));
8039         nla_for_each_attr(attr, data, len, rem) {
8040                 fnode_param = nla_data(attr);
8041
8042                 switch (fnode_param->param) {
8043                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
8044                         fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
8045                         break;
8046                 case ISCSI_FLASHNODE_PORTAL_TYPE:
8047                         memcpy(fnode_sess->portal_type, fnode_param->value,
8048                                strlen(fnode_sess->portal_type));
8049                         break;
8050                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
8051                         fnode_sess->auto_snd_tgt_disable =
8052                                                         fnode_param->value[0];
8053                         break;
8054                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
8055                         fnode_sess->discovery_sess = fnode_param->value[0];
8056                         break;
8057                 case ISCSI_FLASHNODE_ENTRY_EN:
8058                         fnode_sess->entry_state = fnode_param->value[0];
8059                         break;
8060                 case ISCSI_FLASHNODE_HDR_DGST_EN:
8061                         fnode_conn->hdrdgst_en = fnode_param->value[0];
8062                         break;
8063                 case ISCSI_FLASHNODE_DATA_DGST_EN:
8064                         fnode_conn->datadgst_en = fnode_param->value[0];
8065                         break;
8066                 case ISCSI_FLASHNODE_IMM_DATA_EN:
8067                         fnode_sess->imm_data_en = fnode_param->value[0];
8068                         break;
8069                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
8070                         fnode_sess->initial_r2t_en = fnode_param->value[0];
8071                         break;
8072                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
8073                         fnode_sess->dataseq_inorder_en = fnode_param->value[0];
8074                         break;
8075                 case ISCSI_FLASHNODE_PDU_INORDER:
8076                         fnode_sess->pdu_inorder_en = fnode_param->value[0];
8077                         break;
8078                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
8079                         fnode_sess->chap_auth_en = fnode_param->value[0];
8080                         /* Invalidate chap index if chap auth is disabled */
8081                         if (!fnode_sess->chap_auth_en)
8082                                 fnode_sess->chap_out_idx = INVALID_ENTRY;
8083
8084                         break;
8085                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
8086                         fnode_conn->snack_req_en = fnode_param->value[0];
8087                         break;
8088                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
8089                         fnode_sess->discovery_logout_en = fnode_param->value[0];
8090                         break;
8091                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
8092                         fnode_sess->bidi_chap_en = fnode_param->value[0];
8093                         break;
8094                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
8095                         fnode_sess->discovery_auth_optional =
8096                                                         fnode_param->value[0];
8097                         break;
8098                 case ISCSI_FLASHNODE_ERL:
8099                         fnode_sess->erl = fnode_param->value[0];
8100                         break;
8101                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
8102                         fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
8103                         break;
8104                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
8105                         fnode_conn->tcp_nagle_disable = fnode_param->value[0];
8106                         break;
8107                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
8108                         fnode_conn->tcp_wsf_disable = fnode_param->value[0];
8109                         break;
8110                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
8111                         fnode_conn->tcp_timer_scale = fnode_param->value[0];
8112                         break;
8113                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
8114                         fnode_conn->tcp_timestamp_en = fnode_param->value[0];
8115                         break;
8116                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
8117                         fnode_conn->fragment_disable = fnode_param->value[0];
8118                         break;
8119                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
8120                         fnode_conn->max_recv_dlength =
8121                                         *(unsigned *)fnode_param->value;
8122                         break;
8123                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
8124                         fnode_conn->max_xmit_dlength =
8125                                         *(unsigned *)fnode_param->value;
8126                         break;
8127                 case ISCSI_FLASHNODE_FIRST_BURST:
8128                         fnode_sess->first_burst =
8129                                         *(unsigned *)fnode_param->value;
8130                         break;
8131                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
8132                         fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
8133                         break;
8134                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
8135                         fnode_sess->time2retain =
8136                                                 *(uint16_t *)fnode_param->value;
8137                         break;
8138                 case ISCSI_FLASHNODE_MAX_R2T:
8139                         fnode_sess->max_r2t =
8140                                         *(uint16_t *)fnode_param->value;
8141                         break;
8142                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
8143                         fnode_conn->keepalive_timeout =
8144                                 *(uint16_t *)fnode_param->value;
8145                         break;
8146                 case ISCSI_FLASHNODE_ISID:
8147                         memcpy(fnode_sess->isid, fnode_param->value,
8148                                sizeof(fnode_sess->isid));
8149                         break;
8150                 case ISCSI_FLASHNODE_TSID:
8151                         fnode_sess->tsid = *(uint16_t *)fnode_param->value;
8152                         break;
8153                 case ISCSI_FLASHNODE_PORT:
8154                         fnode_conn->port = *(uint16_t *)fnode_param->value;
8155                         break;
8156                 case ISCSI_FLASHNODE_MAX_BURST:
8157                         fnode_sess->max_burst = *(unsigned *)fnode_param->value;
8158                         break;
8159                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
8160                         fnode_sess->default_taskmgmt_timeout =
8161                                                 *(uint16_t *)fnode_param->value;
8162                         break;
8163                 case ISCSI_FLASHNODE_IPADDR:
8164                         memcpy(fnode_conn->ipaddress, fnode_param->value,
8165                                IPv6_ADDR_LEN);
8166                         break;
8167                 case ISCSI_FLASHNODE_ALIAS:
8168                         rc = iscsi_switch_str_param(&fnode_sess->targetalias,
8169                                                     (char *)fnode_param->value);
8170                         break;
8171                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
8172                         memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
8173                                IPv6_ADDR_LEN);
8174                         break;
8175                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
8176                         fnode_conn->max_segment_size =
8177                                         *(unsigned *)fnode_param->value;
8178                         break;
8179                 case ISCSI_FLASHNODE_LOCAL_PORT:
8180                         fnode_conn->local_port =
8181                                                 *(uint16_t *)fnode_param->value;
8182                         break;
8183                 case ISCSI_FLASHNODE_IPV4_TOS:
8184                         fnode_conn->ipv4_tos = fnode_param->value[0];
8185                         break;
8186                 case ISCSI_FLASHNODE_IPV6_TC:
8187                         fnode_conn->ipv6_traffic_class = fnode_param->value[0];
8188                         break;
8189                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8190                         fnode_conn->ipv6_flow_label = fnode_param->value[0];
8191                         break;
8192                 case ISCSI_FLASHNODE_NAME:
8193                         rc = iscsi_switch_str_param(&fnode_sess->targetname,
8194                                                     (char *)fnode_param->value);
8195                         break;
8196                 case ISCSI_FLASHNODE_TPGT:
8197                         fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
8198                         break;
8199                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8200                         memcpy(fnode_conn->link_local_ipv6_addr,
8201                                fnode_param->value, IPv6_ADDR_LEN);
8202                         break;
8203                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8204                         fnode_sess->discovery_parent_idx =
8205                                                 *(uint16_t *)fnode_param->value;
8206                         break;
8207                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8208                         fnode_conn->tcp_xmit_wsf =
8209                                                 *(uint8_t *)fnode_param->value;
8210                         break;
8211                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
8212                         fnode_conn->tcp_recv_wsf =
8213                                                 *(uint8_t *)fnode_param->value;
8214                         break;
8215                 case ISCSI_FLASHNODE_STATSN:
8216                         fnode_conn->statsn = *(uint32_t *)fnode_param->value;
8217                         break;
8218                 case ISCSI_FLASHNODE_EXP_STATSN:
8219                         fnode_conn->exp_statsn =
8220                                                 *(uint32_t *)fnode_param->value;
8221                         break;
8222                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8223                         chap_out_idx = *(uint16_t *)fnode_param->value;
8224                         if (!qla4xxx_get_uni_chap_at_index(ha,
8225                                                            chap_tbl.name,
8226                                                            chap_tbl.secret,
8227                                                            chap_out_idx)) {
8228                                 fnode_sess->chap_out_idx = chap_out_idx;
8229                                 /* Enable chap auth if chap index is valid */
8230                                 fnode_sess->chap_auth_en = QL4_PARAM_ENABLE;
8231                         }
8232                         break;
8233                 default:
8234                         ql4_printk(KERN_ERR, ha,
8235                                    "%s: No such sysfs attribute\n", __func__);
8236                         rc = -ENOSYS;
8237                         goto exit_set_param;
8238                 }
8239         }
8240
8241         rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
8242
8243 exit_set_param:
8244         return rc;
8245 }
8246
8247 /**
8248  * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
8249  * @fnode_sess: pointer to session attrs of flash ddb entry
8250  *
8251  * This invalidates the flash ddb entry at the given index
8252  **/
8253 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
8254 {
8255         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8256         struct scsi_qla_host *ha = to_qla_host(shost);
8257         uint32_t dev_db_start_offset;
8258         uint32_t dev_db_end_offset;
8259         struct dev_db_entry *fw_ddb_entry = NULL;
8260         dma_addr_t fw_ddb_entry_dma;
8261         uint16_t *ddb_cookie = NULL;
8262         size_t ddb_size = 0;
8263         void *pddb = NULL;
8264         int target_id;
8265         int rc = 0;
8266
8267         if (fnode_sess->is_boot_target) {
8268                 rc = -EPERM;
8269                 DEBUG2(ql4_printk(KERN_ERR, ha,
8270                                   "%s: Deletion of boot target entry is not permitted.\n",
8271                                   __func__));
8272                 goto exit_ddb_del;
8273         }
8274
8275         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
8276                 goto sysfs_ddb_del;
8277
8278         if (is_qla40XX(ha)) {
8279                 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
8280                 dev_db_end_offset = FLASH_OFFSET_DB_END;
8281                 dev_db_start_offset += (fnode_sess->target_id *
8282                                        sizeof(*fw_ddb_entry));
8283                 ddb_size = sizeof(*fw_ddb_entry);
8284         } else {
8285                 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
8286                                       (ha->hw.flt_region_ddb << 2);
8287                 /* flt_ddb_size is DDB table size for both ports
8288                  * so divide it by 2 to calculate the offset for second port
8289                  */
8290                 if (ha->port_num == 1)
8291                         dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
8292
8293                 dev_db_end_offset = dev_db_start_offset +
8294                                     (ha->hw.flt_ddb_size / 2);
8295
8296                 dev_db_start_offset += (fnode_sess->target_id *
8297                                        sizeof(*fw_ddb_entry));
8298                 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
8299
8300                 ddb_size = sizeof(*ddb_cookie);
8301         }
8302
8303         DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
8304                           __func__, dev_db_start_offset, dev_db_end_offset));
8305
8306         if (dev_db_start_offset > dev_db_end_offset) {
8307                 rc = -EIO;
8308                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
8309                                   __func__, fnode_sess->target_id));
8310                 goto exit_ddb_del;
8311         }
8312
8313         pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
8314                                   &fw_ddb_entry_dma, GFP_KERNEL);
8315         if (!pddb) {
8316                 rc = -ENOMEM;
8317                 DEBUG2(ql4_printk(KERN_ERR, ha,
8318                                   "%s: Unable to allocate dma buffer\n",
8319                                   __func__));
8320                 goto exit_ddb_del;
8321         }
8322
8323         if (is_qla40XX(ha)) {
8324                 fw_ddb_entry = pddb;
8325                 memset(fw_ddb_entry, 0, ddb_size);
8326                 ddb_cookie = &fw_ddb_entry->cookie;
8327         } else {
8328                 ddb_cookie = pddb;
8329         }
8330
8331         /* invalidate the cookie */
8332         *ddb_cookie = 0xFFEE;
8333         qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
8334                           ddb_size, FLASH_OPT_RMW_COMMIT);
8335
8336 sysfs_ddb_del:
8337         target_id = fnode_sess->target_id;
8338         iscsi_destroy_flashnode_sess(fnode_sess);
8339         ql4_printk(KERN_INFO, ha,
8340                    "%s: session and conn entries for flashnode %u of host %lu deleted\n",
8341                    __func__, target_id, ha->host_no);
8342 exit_ddb_del:
8343         if (pddb)
8344                 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
8345                                   fw_ddb_entry_dma);
8346         return rc;
8347 }
8348
8349 /**
8350  * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
8351  * @ha: pointer to adapter structure
8352  *
8353  * Export the firmware DDB for all send targets and normal targets to sysfs.
8354  **/
8355 static int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
8356 {
8357         struct dev_db_entry *fw_ddb_entry = NULL;
8358         dma_addr_t fw_ddb_entry_dma;
8359         uint16_t max_ddbs;
8360         uint16_t idx = 0;
8361         int ret = QLA_SUCCESS;
8362
8363         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
8364                                           sizeof(*fw_ddb_entry),
8365                                           &fw_ddb_entry_dma, GFP_KERNEL);
8366         if (!fw_ddb_entry) {
8367                 DEBUG2(ql4_printk(KERN_ERR, ha,
8368                                   "%s: Unable to allocate dma buffer\n",
8369                                   __func__));
8370                 return -ENOMEM;
8371         }
8372
8373         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
8374                                      MAX_DEV_DB_ENTRIES;
8375
8376         for (idx = 0; idx < max_ddbs; idx++) {
8377                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
8378                                              idx))
8379                         continue;
8380
8381                 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
8382                 if (ret) {
8383                         ret = -EIO;
8384                         break;
8385                 }
8386         }
8387
8388         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
8389                           fw_ddb_entry_dma);
8390
8391         return ret;
8392 }
8393
8394 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
8395 {
8396         iscsi_destroy_all_flashnode(ha->host);
8397 }
8398
8399 /**
8400  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
8401  * @ha: pointer to adapter structure
8402  * @is_reset: Is this init path or reset path
8403  *
8404  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
8405  * using connection open, then create the list of normal targets (nt)
8406  * from firmware DDBs. Based on the list of nt setup session and connection
8407  * objects.
8408  **/
8409 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
8410 {
8411         uint16_t tmo = 0;
8412         struct list_head list_st, list_nt;
8413         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
8414         unsigned long wtime;
8415
8416         if (!test_bit(AF_LINK_UP, &ha->flags)) {
8417                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
8418                 ha->is_reset = is_reset;
8419                 return;
8420         }
8421
8422         INIT_LIST_HEAD(&list_st);
8423         INIT_LIST_HEAD(&list_nt);
8424
8425         qla4xxx_build_st_list(ha, &list_st);
8426
8427         /* Before issuing conn open mbox, ensure all IPs states are configured
8428          * Note, conn open fails if IPs are not configured
8429          */
8430         qla4xxx_wait_for_ip_configuration(ha);
8431
8432         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
8433         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
8434                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
8435         }
8436
8437         /* Wait to ensure all sendtargets are done for min 12 sec wait */
8438         tmo = ((ha->def_timeout > LOGIN_TOV) &&
8439                (ha->def_timeout < LOGIN_TOV * 10) ?
8440                ha->def_timeout : LOGIN_TOV);
8441
8442         DEBUG2(ql4_printk(KERN_INFO, ha,
8443                           "Default time to wait for build ddb %d\n", tmo));
8444
8445         wtime = jiffies + (HZ * tmo);
8446         do {
8447                 if (list_empty(&list_st))
8448                         break;
8449
8450                 qla4xxx_remove_failed_ddb(ha, &list_st);
8451                 schedule_timeout_uninterruptible(HZ / 10);
8452         } while (time_after(wtime, jiffies));
8453
8454
8455         qla4xxx_build_nt_list(ha, &list_nt, &list_st, is_reset);
8456
8457         qla4xxx_free_ddb_list(&list_st);
8458         qla4xxx_free_ddb_list(&list_nt);
8459
8460         qla4xxx_free_ddb_index(ha);
8461 }
8462
8463 /**
8464  * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
8465  * response.
8466  * @ha: pointer to adapter structure
8467  *
8468  * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
8469  * set in DDB and we will wait for login response of boot targets during
8470  * probe.
8471  **/
8472 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
8473 {
8474         struct ddb_entry *ddb_entry;
8475         struct dev_db_entry *fw_ddb_entry = NULL;
8476         dma_addr_t fw_ddb_entry_dma;
8477         unsigned long wtime;
8478         uint32_t ddb_state;
8479         int max_ddbs, idx, ret;
8480
8481         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
8482                                      MAX_DEV_DB_ENTRIES;
8483
8484         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8485                                           &fw_ddb_entry_dma, GFP_KERNEL);
8486         if (!fw_ddb_entry) {
8487                 ql4_printk(KERN_ERR, ha,
8488                            "%s: Unable to allocate dma buffer\n", __func__);
8489                 goto exit_login_resp;
8490         }
8491
8492         wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
8493
8494         for (idx = 0; idx < max_ddbs; idx++) {
8495                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8496                 if (ddb_entry == NULL)
8497                         continue;
8498
8499                 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
8500                         DEBUG2(ql4_printk(KERN_INFO, ha,
8501                                           "%s: DDB index [%d]\n", __func__,
8502                                           ddb_entry->fw_ddb_index));
8503                         do {
8504                                 ret = qla4xxx_get_fwddb_entry(ha,
8505                                                 ddb_entry->fw_ddb_index,
8506                                                 fw_ddb_entry, fw_ddb_entry_dma,
8507                                                 NULL, NULL, &ddb_state, NULL,
8508                                                 NULL, NULL);
8509                                 if (ret == QLA_ERROR)
8510                                         goto exit_login_resp;
8511
8512                                 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
8513                                     (ddb_state == DDB_DS_SESSION_FAILED))
8514                                         break;
8515
8516                                 schedule_timeout_uninterruptible(HZ);
8517
8518                         } while ((time_after(wtime, jiffies)));
8519
8520                         if (!time_after(wtime, jiffies)) {
8521                                 DEBUG2(ql4_printk(KERN_INFO, ha,
8522                                                   "%s: Login response wait timer expired\n",
8523                                                   __func__));
8524                                  goto exit_login_resp;
8525                         }
8526                 }
8527         }
8528
8529 exit_login_resp:
8530         if (fw_ddb_entry)
8531                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8532                                   fw_ddb_entry, fw_ddb_entry_dma);
8533 }
8534
8535 /**
8536  * qla4xxx_probe_adapter - callback function to probe HBA
8537  * @pdev: pointer to pci_dev structure
8538  * @pci_device_id: pointer to pci_device entry
8539  *
8540  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
8541  * It returns zero if successful. It also initializes all data necessary for
8542  * the driver.
8543  **/
8544 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
8545                                  const struct pci_device_id *ent)
8546 {
8547         int ret = -ENODEV, status;
8548         struct Scsi_Host *host;
8549         struct scsi_qla_host *ha;
8550         uint8_t init_retry_count = 0;
8551         char buf[34];
8552         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
8553         uint32_t dev_state;
8554
8555         if (pci_enable_device(pdev))
8556                 return -1;
8557
8558         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
8559         if (host == NULL) {
8560                 printk(KERN_WARNING
8561                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
8562                 goto probe_disable_device;
8563         }
8564
8565         /* Clear our data area */
8566         ha = to_qla_host(host);
8567         memset(ha, 0, sizeof(*ha));
8568
8569         /* Save the information from PCI BIOS.  */
8570         ha->pdev = pdev;
8571         ha->host = host;
8572         ha->host_no = host->host_no;
8573         ha->func_num = PCI_FUNC(ha->pdev->devfn);
8574
8575         pci_enable_pcie_error_reporting(pdev);
8576
8577         /* Setup Runtime configurable options */
8578         if (is_qla8022(ha)) {
8579                 ha->isp_ops = &qla4_82xx_isp_ops;
8580                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
8581                 ha->qdr_sn_window = -1;
8582                 ha->ddr_mn_window = -1;
8583                 ha->curr_window = 255;
8584                 nx_legacy_intr = &legacy_intr[ha->func_num];
8585                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
8586                 ha->nx_legacy_intr.tgt_status_reg =
8587                         nx_legacy_intr->tgt_status_reg;
8588                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
8589                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
8590         } else if (is_qla8032(ha) || is_qla8042(ha)) {
8591                 ha->isp_ops = &qla4_83xx_isp_ops;
8592                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
8593         } else {
8594                 ha->isp_ops = &qla4xxx_isp_ops;
8595         }
8596
8597         if (is_qla80XX(ha)) {
8598                 rwlock_init(&ha->hw_lock);
8599                 ha->pf_bit = ha->func_num << 16;
8600                 /* Set EEH reset type to fundamental if required by hba */
8601                 pdev->needs_freset = 1;
8602         }
8603
8604         /* Configure PCI I/O space. */
8605         ret = ha->isp_ops->iospace_config(ha);
8606         if (ret)
8607                 goto probe_failed_ioconfig;
8608
8609         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
8610                    pdev->device, pdev->irq, ha->reg);
8611
8612         qla4xxx_config_dma_addressing(ha);
8613
8614         /* Initialize lists and spinlocks. */
8615         INIT_LIST_HEAD(&ha->free_srb_q);
8616
8617         mutex_init(&ha->mbox_sem);
8618         mutex_init(&ha->chap_sem);
8619         init_completion(&ha->mbx_intr_comp);
8620         init_completion(&ha->disable_acb_comp);
8621         init_completion(&ha->idc_comp);
8622         init_completion(&ha->link_up_comp);
8623         init_completion(&ha->disable_acb_comp);
8624
8625         spin_lock_init(&ha->hardware_lock);
8626         spin_lock_init(&ha->work_lock);
8627
8628         /* Initialize work list */
8629         INIT_LIST_HEAD(&ha->work_list);
8630
8631         /* Allocate dma buffers */
8632         if (qla4xxx_mem_alloc(ha)) {
8633                 ql4_printk(KERN_WARNING, ha,
8634                     "[ERROR] Failed to allocate memory for adapter\n");
8635
8636                 ret = -ENOMEM;
8637                 goto probe_failed;
8638         }
8639
8640         host->cmd_per_lun = 3;
8641         host->max_channel = 0;
8642         host->max_lun = MAX_LUNS - 1;
8643         host->max_id = MAX_TARGETS;
8644         host->max_cmd_len = IOCB_MAX_CDB_LEN;
8645         host->can_queue = MAX_SRBS ;
8646         host->transportt = qla4xxx_scsi_transport;
8647
8648         ret = scsi_init_shared_tag_map(host, MAX_SRBS);
8649         if (ret) {
8650                 ql4_printk(KERN_WARNING, ha,
8651                            "%s: scsi_init_shared_tag_map failed\n", __func__);
8652                 goto probe_failed;
8653         }
8654
8655         pci_set_drvdata(pdev, ha);
8656
8657         ret = scsi_add_host(host, &pdev->dev);
8658         if (ret)
8659                 goto probe_failed;
8660
8661         if (is_qla80XX(ha))
8662                 qla4_8xxx_get_flash_info(ha);
8663
8664         if (is_qla8032(ha) || is_qla8042(ha)) {
8665                 qla4_83xx_read_reset_template(ha);
8666                 /*
8667                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
8668                  * If DONRESET_BIT0 is set, drivers should not set dev_state
8669                  * to NEED_RESET. But if NEED_RESET is set, drivers should
8670                  * should honor the reset.
8671                  */
8672                 if (ql4xdontresethba == 1)
8673                         qla4_83xx_set_idc_dontreset(ha);
8674         }
8675
8676         /*
8677          * Initialize the Host adapter request/response queues and
8678          * firmware
8679          * NOTE: interrupts enabled upon successful completion
8680          */
8681         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8682
8683         /* Dont retry adapter initialization if IRQ allocation failed */
8684         if (is_qla80XX(ha) && !test_bit(AF_IRQ_ATTACHED, &ha->flags)) {
8685                 ql4_printk(KERN_WARNING, ha, "%s: Skipping retry of adapter initialization\n",
8686                            __func__);
8687                 goto skip_retry_init;
8688         }
8689
8690         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
8691             init_retry_count++ < MAX_INIT_RETRIES) {
8692
8693                 if (is_qla80XX(ha)) {
8694                         ha->isp_ops->idc_lock(ha);
8695                         dev_state = qla4_8xxx_rd_direct(ha,
8696                                                         QLA8XXX_CRB_DEV_STATE);
8697                         ha->isp_ops->idc_unlock(ha);
8698                         if (dev_state == QLA8XXX_DEV_FAILED) {
8699                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
8700                                     "initialize adapter. H/W is in failed state\n",
8701                                     __func__);
8702                                 break;
8703                         }
8704                 }
8705                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
8706                               "(%d)\n", __func__, init_retry_count));
8707
8708                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
8709                         continue;
8710
8711                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8712         }
8713
8714 skip_retry_init:
8715         if (!test_bit(AF_ONLINE, &ha->flags)) {
8716                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
8717
8718                 if ((is_qla8022(ha) && ql4xdontresethba) ||
8719                     ((is_qla8032(ha) || is_qla8042(ha)) &&
8720                      qla4_83xx_idc_dontreset(ha))) {
8721                         /* Put the device in failed state. */
8722                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
8723                         ha->isp_ops->idc_lock(ha);
8724                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8725                                             QLA8XXX_DEV_FAILED);
8726                         ha->isp_ops->idc_unlock(ha);
8727                 }
8728                 ret = -ENODEV;
8729                 goto remove_host;
8730         }
8731
8732         /* Startup the kernel thread for this host adapter. */
8733         DEBUG2(printk("scsi: %s: Starting kernel thread for "
8734                       "qla4xxx_dpc\n", __func__));
8735         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
8736         ha->dpc_thread = create_singlethread_workqueue(buf);
8737         if (!ha->dpc_thread) {
8738                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
8739                 ret = -ENODEV;
8740                 goto remove_host;
8741         }
8742         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
8743
8744         ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
8745                                       ha->host_no);
8746         if (!ha->task_wq) {
8747                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
8748                 ret = -ENODEV;
8749                 goto remove_host;
8750         }
8751
8752         /*
8753          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
8754          * (which is called indirectly by qla4xxx_initialize_adapter),
8755          * so that irqs will be registered after crbinit but before
8756          * mbx_intr_enable.
8757          */
8758         if (is_qla40XX(ha)) {
8759                 ret = qla4xxx_request_irqs(ha);
8760                 if (ret) {
8761                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
8762                             "interrupt %d already in use.\n", pdev->irq);
8763                         goto remove_host;
8764                 }
8765         }
8766
8767         pci_save_state(ha->pdev);
8768         ha->isp_ops->enable_intrs(ha);
8769
8770         /* Start timer thread. */
8771         qla4xxx_start_timer(ha, qla4xxx_timer, 1);
8772
8773         set_bit(AF_INIT_DONE, &ha->flags);
8774
8775         qla4_8xxx_alloc_sysfs_attr(ha);
8776
8777         printk(KERN_INFO
8778                " QLogic iSCSI HBA Driver version: %s\n"
8779                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
8780                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
8781                ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
8782                ha->fw_info.fw_patch, ha->fw_info.fw_build);
8783
8784         /* Set the driver version */
8785         if (is_qla80XX(ha))
8786                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
8787
8788         if (qla4xxx_setup_boot_info(ha))
8789                 ql4_printk(KERN_ERR, ha,
8790                            "%s: No iSCSI boot target configured\n", __func__);
8791
8792         if (qla4xxx_sysfs_ddb_export(ha))
8793                 ql4_printk(KERN_ERR, ha,
8794                            "%s: Error exporting ddb to sysfs\n", __func__);
8795
8796                 /* Perform the build ddb list and login to each */
8797         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
8798         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
8799         qla4xxx_wait_login_resp_boot_tgt(ha);
8800
8801         qla4xxx_create_chap_list(ha);
8802
8803         qla4xxx_create_ifaces(ha);
8804         return 0;
8805
8806 remove_host:
8807         scsi_remove_host(ha->host);
8808
8809 probe_failed:
8810         qla4xxx_free_adapter(ha);
8811
8812 probe_failed_ioconfig:
8813         pci_disable_pcie_error_reporting(pdev);
8814         scsi_host_put(ha->host);
8815
8816 probe_disable_device:
8817         pci_disable_device(pdev);
8818
8819         return ret;
8820 }
8821
8822 /**
8823  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
8824  * @ha: pointer to adapter structure
8825  *
8826  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
8827  * so that the other port will not re-initialize while in the process of
8828  * removing the ha due to driver unload or hba hotplug.
8829  **/
8830 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
8831 {
8832         struct scsi_qla_host *other_ha = NULL;
8833         struct pci_dev *other_pdev = NULL;
8834         int fn = ISP4XXX_PCI_FN_2;
8835
8836         /*iscsi function numbers for ISP4xxx is 1 and 3*/
8837         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
8838                 fn = ISP4XXX_PCI_FN_1;
8839
8840         other_pdev =
8841                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
8842                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
8843                 fn));
8844
8845         /* Get other_ha if other_pdev is valid and state is enable*/
8846         if (other_pdev) {
8847                 if (atomic_read(&other_pdev->enable_cnt)) {
8848                         other_ha = pci_get_drvdata(other_pdev);
8849                         if (other_ha) {
8850                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
8851                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
8852                                     "Prevent %s reinit\n", __func__,
8853                                     dev_name(&other_ha->pdev->dev)));
8854                         }
8855                 }
8856                 pci_dev_put(other_pdev);
8857         }
8858 }
8859
8860 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
8861 {
8862         struct ddb_entry *ddb_entry;
8863         int options;
8864         int idx;
8865
8866         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
8867
8868                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8869                 if ((ddb_entry != NULL) &&
8870                     (ddb_entry->ddb_type == FLASH_DDB)) {
8871
8872                         options = LOGOUT_OPTION_CLOSE_SESSION;
8873                         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
8874                             == QLA_ERROR)
8875                                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
8876                                            __func__);
8877
8878                         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
8879                         /*
8880                          * we have decremented the reference count of the driver
8881                          * when we setup the session to have the driver unload
8882                          * to be seamless without actually destroying the
8883                          * session
8884                          **/
8885                         try_module_get(qla4xxx_iscsi_transport.owner);
8886                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
8887                         qla4xxx_free_ddb(ha, ddb_entry);
8888                         iscsi_session_teardown(ddb_entry->sess);
8889                 }
8890         }
8891 }
8892 /**
8893  * qla4xxx_remove_adapter - callback function to remove adapter.
8894  * @pci_dev: PCI device pointer
8895  **/
8896 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
8897 {
8898         struct scsi_qla_host *ha;
8899
8900         /*
8901          * If the PCI device is disabled then it means probe_adapter had
8902          * failed and resources already cleaned up on probe_adapter exit.
8903          */
8904         if (!pci_is_enabled(pdev))
8905                 return;
8906
8907         ha = pci_get_drvdata(pdev);
8908
8909         if (is_qla40XX(ha))
8910                 qla4xxx_prevent_other_port_reinit(ha);
8911
8912         /* destroy iface from sysfs */
8913         qla4xxx_destroy_ifaces(ha);
8914
8915         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
8916                 iscsi_boot_destroy_kset(ha->boot_kset);
8917
8918         qla4xxx_destroy_fw_ddb_session(ha);
8919         qla4_8xxx_free_sysfs_attr(ha);
8920
8921         qla4xxx_sysfs_ddb_remove(ha);
8922         scsi_remove_host(ha->host);
8923
8924         qla4xxx_free_adapter(ha);
8925
8926         scsi_host_put(ha->host);
8927
8928         pci_disable_pcie_error_reporting(pdev);
8929         pci_disable_device(pdev);
8930 }
8931
8932 /**
8933  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
8934  * @ha: HA context
8935  *
8936  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
8937  * supported addressing method.
8938  */
8939 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
8940 {
8941         int retval;
8942
8943         /* Update our PCI device dma_mask for full 64 bit mask */
8944         if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
8945                 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
8946                         dev_dbg(&ha->pdev->dev,
8947                                   "Failed to set 64 bit PCI consistent mask; "
8948                                    "using 32 bit.\n");
8949                         retval = pci_set_consistent_dma_mask(ha->pdev,
8950                                                              DMA_BIT_MASK(32));
8951                 }
8952         } else
8953                 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
8954 }
8955
8956 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
8957 {
8958         struct iscsi_cls_session *cls_sess;
8959         struct iscsi_session *sess;
8960         struct ddb_entry *ddb;
8961         int queue_depth = QL4_DEF_QDEPTH;
8962
8963         cls_sess = starget_to_session(sdev->sdev_target);
8964         sess = cls_sess->dd_data;
8965         ddb = sess->dd_data;
8966
8967         sdev->hostdata = ddb;
8968         sdev->tagged_supported = 1;
8969
8970         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
8971                 queue_depth = ql4xmaxqdepth;
8972
8973         scsi_activate_tcq(sdev, queue_depth);
8974         return 0;
8975 }
8976
8977 static int qla4xxx_slave_configure(struct scsi_device *sdev)
8978 {
8979         sdev->tagged_supported = 1;
8980         return 0;
8981 }
8982
8983 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
8984 {
8985         scsi_deactivate_tcq(sdev, 1);
8986 }
8987
8988 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
8989                                       int reason)
8990 {
8991         if (!ql4xqfulltracking)
8992                 return -EOPNOTSUPP;
8993
8994         return iscsi_change_queue_depth(sdev, qdepth, reason);
8995 }
8996
8997 /**
8998  * qla4xxx_del_from_active_array - returns an active srb
8999  * @ha: Pointer to host adapter structure.
9000  * @index: index into the active_array
9001  *
9002  * This routine removes and returns the srb at the specified index
9003  **/
9004 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
9005     uint32_t index)
9006 {
9007         struct srb *srb = NULL;
9008         struct scsi_cmnd *cmd = NULL;
9009
9010         cmd = scsi_host_find_tag(ha->host, index);
9011         if (!cmd)
9012                 return srb;
9013
9014         srb = (struct srb *)CMD_SP(cmd);
9015         if (!srb)
9016                 return srb;
9017
9018         /* update counters */
9019         if (srb->flags & SRB_DMA_VALID) {
9020                 ha->iocb_cnt -= srb->iocb_cnt;
9021                 if (srb->cmd)
9022                         srb->cmd->host_scribble =
9023                                 (unsigned char *)(unsigned long) MAX_SRBS;
9024         }
9025         return srb;
9026 }
9027
9028 /**
9029  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
9030  * @ha: Pointer to host adapter structure.
9031  * @cmd: Scsi Command to wait on.
9032  *
9033  * This routine waits for the command to be returned by the Firmware
9034  * for some max time.
9035  **/
9036 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
9037                                       struct scsi_cmnd *cmd)
9038 {
9039         int done = 0;
9040         struct srb *rp;
9041         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
9042         int ret = SUCCESS;
9043
9044         /* Dont wait on command if PCI error is being handled
9045          * by PCI AER driver
9046          */
9047         if (unlikely(pci_channel_offline(ha->pdev)) ||
9048             (test_bit(AF_EEH_BUSY, &ha->flags))) {
9049                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
9050                     ha->host_no, __func__);
9051                 return ret;
9052         }
9053
9054         do {
9055                 /* Checking to see if its returned to OS */
9056                 rp = (struct srb *) CMD_SP(cmd);
9057                 if (rp == NULL) {
9058                         done++;
9059                         break;
9060                 }
9061
9062                 msleep(2000);
9063         } while (max_wait_time--);
9064
9065         return done;
9066 }
9067
9068 /**
9069  * qla4xxx_wait_for_hba_online - waits for HBA to come online
9070  * @ha: Pointer to host adapter structure
9071  **/
9072 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
9073 {
9074         unsigned long wait_online;
9075
9076         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
9077         while (time_before(jiffies, wait_online)) {
9078
9079                 if (adapter_up(ha))
9080                         return QLA_SUCCESS;
9081
9082                 msleep(2000);
9083         }
9084
9085         return QLA_ERROR;
9086 }
9087
9088 /**
9089  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
9090  * @ha: pointer to HBA
9091  * @t: target id
9092  * @l: lun id
9093  *
9094  * This function waits for all outstanding commands to a lun to complete. It
9095  * returns 0 if all pending commands are returned and 1 otherwise.
9096  **/
9097 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
9098                                         struct scsi_target *stgt,
9099                                         struct scsi_device *sdev)
9100 {
9101         int cnt;
9102         int status = 0;
9103         struct scsi_cmnd *cmd;
9104
9105         /*
9106          * Waiting for all commands for the designated target or dev
9107          * in the active array
9108          */
9109         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
9110                 cmd = scsi_host_find_tag(ha->host, cnt);
9111                 if (cmd && stgt == scsi_target(cmd->device) &&
9112                     (!sdev || sdev == cmd->device)) {
9113                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9114                                 status++;
9115                                 break;
9116                         }
9117                 }
9118         }
9119         return status;
9120 }
9121
9122 /**
9123  * qla4xxx_eh_abort - callback for abort task.
9124  * @cmd: Pointer to Linux's SCSI command structure
9125  *
9126  * This routine is called by the Linux OS to abort the specified
9127  * command.
9128  **/
9129 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
9130 {
9131         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9132         unsigned int id = cmd->device->id;
9133         unsigned int lun = cmd->device->lun;
9134         unsigned long flags;
9135         struct srb *srb = NULL;
9136         int ret = SUCCESS;
9137         int wait = 0;
9138
9139         ql4_printk(KERN_INFO, ha,
9140             "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
9141             ha->host_no, id, lun, cmd);
9142
9143         spin_lock_irqsave(&ha->hardware_lock, flags);
9144         srb = (struct srb *) CMD_SP(cmd);
9145         if (!srb) {
9146                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
9147                 return SUCCESS;
9148         }
9149         kref_get(&srb->srb_ref);
9150         spin_unlock_irqrestore(&ha->hardware_lock, flags);
9151
9152         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
9153                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
9154                     ha->host_no, id, lun));
9155                 ret = FAILED;
9156         } else {
9157                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
9158                     ha->host_no, id, lun));
9159                 wait = 1;
9160         }
9161
9162         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
9163
9164         /* Wait for command to complete */
9165         if (wait) {
9166                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9167                         DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
9168                             ha->host_no, id, lun));
9169                         ret = FAILED;
9170                 }
9171         }
9172
9173         ql4_printk(KERN_INFO, ha,
9174             "scsi%ld:%d:%d: Abort command - %s\n",
9175             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
9176
9177         return ret;
9178 }
9179
9180 /**
9181  * qla4xxx_eh_device_reset - callback for target reset.
9182  * @cmd: Pointer to Linux's SCSI command structure
9183  *
9184  * This routine is called by the Linux OS to reset all luns on the
9185  * specified target.
9186  **/
9187 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
9188 {
9189         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9190         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9191         int ret = FAILED, stat;
9192
9193         if (!ddb_entry)
9194                 return ret;
9195
9196         ret = iscsi_block_scsi_eh(cmd);
9197         if (ret)
9198                 return ret;
9199         ret = FAILED;
9200
9201         ql4_printk(KERN_INFO, ha,
9202                    "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
9203                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9204
9205         DEBUG2(printk(KERN_INFO
9206                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
9207                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
9208                       cmd, jiffies, cmd->request->timeout / HZ,
9209                       ha->dpc_flags, cmd->result, cmd->allowed));
9210
9211         /* FIXME: wait for hba to go online */
9212         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
9213         if (stat != QLA_SUCCESS) {
9214                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
9215                 goto eh_dev_reset_done;
9216         }
9217
9218         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9219                                          cmd->device)) {
9220                 ql4_printk(KERN_INFO, ha,
9221                            "DEVICE RESET FAILED - waiting for "
9222                            "commands.\n");
9223                 goto eh_dev_reset_done;
9224         }
9225
9226         /* Send marker. */
9227         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9228                 MM_LUN_RESET) != QLA_SUCCESS)
9229                 goto eh_dev_reset_done;
9230
9231         ql4_printk(KERN_INFO, ha,
9232                    "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
9233                    ha->host_no, cmd->device->channel, cmd->device->id,
9234                    cmd->device->lun);
9235
9236         ret = SUCCESS;
9237
9238 eh_dev_reset_done:
9239
9240         return ret;
9241 }
9242
9243 /**
9244  * qla4xxx_eh_target_reset - callback for target reset.
9245  * @cmd: Pointer to Linux's SCSI command structure
9246  *
9247  * This routine is called by the Linux OS to reset the target.
9248  **/
9249 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
9250 {
9251         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9252         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9253         int stat, ret;
9254
9255         if (!ddb_entry)
9256                 return FAILED;
9257
9258         ret = iscsi_block_scsi_eh(cmd);
9259         if (ret)
9260                 return ret;
9261
9262         starget_printk(KERN_INFO, scsi_target(cmd->device),
9263                        "WARM TARGET RESET ISSUED.\n");
9264
9265         DEBUG2(printk(KERN_INFO
9266                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
9267                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
9268                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
9269                       ha->dpc_flags, cmd->result, cmd->allowed));
9270
9271         stat = qla4xxx_reset_target(ha, ddb_entry);
9272         if (stat != QLA_SUCCESS) {
9273                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9274                                "WARM TARGET RESET FAILED.\n");
9275                 return FAILED;
9276         }
9277
9278         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9279                                          NULL)) {
9280                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9281                                "WARM TARGET DEVICE RESET FAILED - "
9282                                "waiting for commands.\n");
9283                 return FAILED;
9284         }
9285
9286         /* Send marker. */
9287         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9288                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
9289                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9290                                "WARM TARGET DEVICE RESET FAILED - "
9291                                "marker iocb failed.\n");
9292                 return FAILED;
9293         }
9294
9295         starget_printk(KERN_INFO, scsi_target(cmd->device),
9296                        "WARM TARGET RESET SUCCEEDED.\n");
9297         return SUCCESS;
9298 }
9299
9300 /**
9301  * qla4xxx_is_eh_active - check if error handler is running
9302  * @shost: Pointer to SCSI Host struct
9303  *
9304  * This routine finds that if reset host is called in EH
9305  * scenario or from some application like sg_reset
9306  **/
9307 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
9308 {
9309         if (shost->shost_state == SHOST_RECOVERY)
9310                 return 1;
9311         return 0;
9312 }
9313
9314 /**
9315  * qla4xxx_eh_host_reset - kernel callback
9316  * @cmd: Pointer to Linux's SCSI command structure
9317  *
9318  * This routine is invoked by the Linux kernel to perform fatal error
9319  * recovery on the specified adapter.
9320  **/
9321 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
9322 {
9323         int return_status = FAILED;
9324         struct scsi_qla_host *ha;
9325
9326         ha = to_qla_host(cmd->device->host);
9327
9328         if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
9329                 qla4_83xx_set_idc_dontreset(ha);
9330
9331         /*
9332          * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
9333          * protocol drivers, we should not set device_state to NEED_RESET
9334          */
9335         if (ql4xdontresethba ||
9336             ((is_qla8032(ha) || is_qla8042(ha)) &&
9337              qla4_83xx_idc_dontreset(ha))) {
9338                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
9339                      ha->host_no, __func__));
9340
9341                 /* Clear outstanding srb in queues */
9342                 if (qla4xxx_is_eh_active(cmd->device->host))
9343                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
9344
9345                 return FAILED;
9346         }
9347
9348         ql4_printk(KERN_INFO, ha,
9349                    "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
9350                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9351
9352         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
9353                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
9354                               "DEAD.\n", ha->host_no, cmd->device->channel,
9355                               __func__));
9356
9357                 return FAILED;
9358         }
9359
9360         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9361                 if (is_qla80XX(ha))
9362                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
9363                 else
9364                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
9365         }
9366
9367         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
9368                 return_status = SUCCESS;
9369
9370         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
9371                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
9372
9373         return return_status;
9374 }
9375
9376 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
9377 {
9378         uint32_t mbox_cmd[MBOX_REG_COUNT];
9379         uint32_t mbox_sts[MBOX_REG_COUNT];
9380         struct addr_ctrl_blk_def *acb = NULL;
9381         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
9382         int rval = QLA_SUCCESS;
9383         dma_addr_t acb_dma;
9384
9385         acb = dma_alloc_coherent(&ha->pdev->dev,
9386                                  sizeof(struct addr_ctrl_blk_def),
9387                                  &acb_dma, GFP_KERNEL);
9388         if (!acb) {
9389                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
9390                            __func__);
9391                 rval = -ENOMEM;
9392                 goto exit_port_reset;
9393         }
9394
9395         memset(acb, 0, acb_len);
9396
9397         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
9398         if (rval != QLA_SUCCESS) {
9399                 rval = -EIO;
9400                 goto exit_free_acb;
9401         }
9402
9403         rval = qla4xxx_disable_acb(ha);
9404         if (rval != QLA_SUCCESS) {
9405                 rval = -EIO;
9406                 goto exit_free_acb;
9407         }
9408
9409         wait_for_completion_timeout(&ha->disable_acb_comp,
9410                                     DISABLE_ACB_TOV * HZ);
9411
9412         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
9413         if (rval != QLA_SUCCESS) {
9414                 rval = -EIO;
9415                 goto exit_free_acb;
9416         }
9417
9418 exit_free_acb:
9419         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
9420                           acb, acb_dma);
9421 exit_port_reset:
9422         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
9423                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
9424         return rval;
9425 }
9426
9427 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
9428 {
9429         struct scsi_qla_host *ha = to_qla_host(shost);
9430         int rval = QLA_SUCCESS;
9431         uint32_t idc_ctrl;
9432
9433         if (ql4xdontresethba) {
9434                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
9435                                   __func__));
9436                 rval = -EPERM;
9437                 goto exit_host_reset;
9438         }
9439
9440         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
9441                 goto recover_adapter;
9442
9443         switch (reset_type) {
9444         case SCSI_ADAPTER_RESET:
9445                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
9446                 break;
9447         case SCSI_FIRMWARE_RESET:
9448                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9449                         if (is_qla80XX(ha))
9450                                 /* set firmware context reset */
9451                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
9452                                         &ha->dpc_flags);
9453                         else {
9454                                 rval = qla4xxx_context_reset(ha);
9455                                 goto exit_host_reset;
9456                         }
9457                 }
9458                 break;
9459         }
9460
9461 recover_adapter:
9462         /* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
9463          * reset is issued by application */
9464         if ((is_qla8032(ha) || is_qla8042(ha)) &&
9465             test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9466                 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
9467                 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
9468                                  (idc_ctrl | GRACEFUL_RESET_BIT1));
9469         }
9470
9471         rval = qla4xxx_recover_adapter(ha);
9472         if (rval != QLA_SUCCESS) {
9473                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
9474                                   __func__));
9475                 rval = -EIO;
9476         }
9477
9478 exit_host_reset:
9479         return rval;
9480 }
9481
9482 /* PCI AER driver recovers from all correctable errors w/o
9483  * driver intervention. For uncorrectable errors PCI AER
9484  * driver calls the following device driver's callbacks
9485  *
9486  * - Fatal Errors - link_reset
9487  * - Non-Fatal Errors - driver's pci_error_detected() which
9488  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
9489  *
9490  * PCI AER driver calls
9491  * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
9492  *               returns RECOVERED or NEED_RESET if fw_hung
9493  * NEED_RESET - driver's slot_reset()
9494  * DISCONNECT - device is dead & cannot recover
9495  * RECOVERED - driver's pci_resume()
9496  */
9497 static pci_ers_result_t
9498 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9499 {
9500         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9501
9502         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
9503             ha->host_no, __func__, state);
9504
9505         if (!is_aer_supported(ha))
9506                 return PCI_ERS_RESULT_NONE;
9507
9508         switch (state) {
9509         case pci_channel_io_normal:
9510                 clear_bit(AF_EEH_BUSY, &ha->flags);
9511                 return PCI_ERS_RESULT_CAN_RECOVER;
9512         case pci_channel_io_frozen:
9513                 set_bit(AF_EEH_BUSY, &ha->flags);
9514                 qla4xxx_mailbox_premature_completion(ha);
9515                 qla4xxx_free_irqs(ha);
9516                 pci_disable_device(pdev);
9517                 /* Return back all IOs */
9518                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
9519                 return PCI_ERS_RESULT_NEED_RESET;
9520         case pci_channel_io_perm_failure:
9521                 set_bit(AF_EEH_BUSY, &ha->flags);
9522                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
9523                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
9524                 return PCI_ERS_RESULT_DISCONNECT;
9525         }
9526         return PCI_ERS_RESULT_NEED_RESET;
9527 }
9528
9529 /**
9530  * qla4xxx_pci_mmio_enabled() gets called if
9531  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
9532  * and read/write to the device still works.
9533  **/
9534 static pci_ers_result_t
9535 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
9536 {
9537         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9538
9539         if (!is_aer_supported(ha))
9540                 return PCI_ERS_RESULT_NONE;
9541
9542         return PCI_ERS_RESULT_RECOVERED;
9543 }
9544
9545 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
9546 {
9547         uint32_t rval = QLA_ERROR;
9548         int fn;
9549         struct pci_dev *other_pdev = NULL;
9550
9551         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
9552
9553         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9554
9555         if (test_bit(AF_ONLINE, &ha->flags)) {
9556                 clear_bit(AF_ONLINE, &ha->flags);
9557                 clear_bit(AF_LINK_UP, &ha->flags);
9558                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
9559                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
9560         }
9561
9562         fn = PCI_FUNC(ha->pdev->devfn);
9563         while (fn > 0) {
9564                 fn--;
9565                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
9566                     "func %x\n", ha->host_no, __func__, fn);
9567                 /* Get the pci device given the domain, bus,
9568                  * slot/function number */
9569                 other_pdev =
9570                     pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
9571                     ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
9572                     fn));
9573
9574                 if (!other_pdev)
9575                         continue;
9576
9577                 if (atomic_read(&other_pdev->enable_cnt)) {
9578                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
9579                             "func in enabled state%x\n", ha->host_no,
9580                             __func__, fn);
9581                         pci_dev_put(other_pdev);
9582                         break;
9583                 }
9584                 pci_dev_put(other_pdev);
9585         }
9586
9587         /* The first function on the card, the reset owner will
9588          * start & initialize the firmware. The other functions
9589          * on the card will reset the firmware context
9590          */
9591         if (!fn) {
9592                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
9593                     "0x%x is the owner\n", ha->host_no, __func__,
9594                     ha->pdev->devfn);
9595
9596                 ha->isp_ops->idc_lock(ha);
9597                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9598                                     QLA8XXX_DEV_COLD);
9599                 ha->isp_ops->idc_unlock(ha);
9600
9601                 rval = qla4_8xxx_update_idc_reg(ha);
9602                 if (rval == QLA_ERROR) {
9603                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
9604                                    ha->host_no, __func__);
9605                         ha->isp_ops->idc_lock(ha);
9606                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9607                                             QLA8XXX_DEV_FAILED);
9608                         ha->isp_ops->idc_unlock(ha);
9609                         goto exit_error_recovery;
9610                 }
9611
9612                 clear_bit(AF_FW_RECOVERY, &ha->flags);
9613                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9614
9615                 if (rval != QLA_SUCCESS) {
9616                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9617                             "FAILED\n", ha->host_no, __func__);
9618                         ha->isp_ops->idc_lock(ha);
9619                         qla4_8xxx_clear_drv_active(ha);
9620                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9621                                             QLA8XXX_DEV_FAILED);
9622                         ha->isp_ops->idc_unlock(ha);
9623                 } else {
9624                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9625                             "READY\n", ha->host_no, __func__);
9626                         ha->isp_ops->idc_lock(ha);
9627                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9628                                             QLA8XXX_DEV_READY);
9629                         /* Clear driver state register */
9630                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
9631                         qla4_8xxx_set_drv_active(ha);
9632                         ha->isp_ops->idc_unlock(ha);
9633                         ha->isp_ops->enable_intrs(ha);
9634                 }
9635         } else {
9636                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
9637                     "the reset owner\n", ha->host_no, __func__,
9638                     ha->pdev->devfn);
9639                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
9640                      QLA8XXX_DEV_READY)) {
9641                         clear_bit(AF_FW_RECOVERY, &ha->flags);
9642                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9643                         if (rval == QLA_SUCCESS)
9644                                 ha->isp_ops->enable_intrs(ha);
9645
9646                         ha->isp_ops->idc_lock(ha);
9647                         qla4_8xxx_set_drv_active(ha);
9648                         ha->isp_ops->idc_unlock(ha);
9649                 }
9650         }
9651 exit_error_recovery:
9652         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9653         return rval;
9654 }
9655
9656 static pci_ers_result_t
9657 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
9658 {
9659         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
9660         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9661         int rc;
9662
9663         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
9664             ha->host_no, __func__);
9665
9666         if (!is_aer_supported(ha))
9667                 return PCI_ERS_RESULT_NONE;
9668
9669         /* Restore the saved state of PCIe device -
9670          * BAR registers, PCI Config space, PCIX, MSI,
9671          * IOV states
9672          */
9673         pci_restore_state(pdev);
9674
9675         /* pci_restore_state() clears the saved_state flag of the device
9676          * save restored state which resets saved_state flag
9677          */
9678         pci_save_state(pdev);
9679
9680         /* Initialize device or resume if in suspended state */
9681         rc = pci_enable_device(pdev);
9682         if (rc) {
9683                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
9684                     "device after reset\n", ha->host_no, __func__);
9685                 goto exit_slot_reset;
9686         }
9687
9688         ha->isp_ops->disable_intrs(ha);
9689
9690         if (is_qla80XX(ha)) {
9691                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
9692                         ret = PCI_ERS_RESULT_RECOVERED;
9693                         goto exit_slot_reset;
9694                 } else
9695                         goto exit_slot_reset;
9696         }
9697
9698 exit_slot_reset:
9699         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
9700             "device after reset\n", ha->host_no, __func__, ret);
9701         return ret;
9702 }
9703
9704 static void
9705 qla4xxx_pci_resume(struct pci_dev *pdev)
9706 {
9707         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9708         int ret;
9709
9710         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
9711             ha->host_no, __func__);
9712
9713         ret = qla4xxx_wait_for_hba_online(ha);
9714         if (ret != QLA_SUCCESS) {
9715                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
9716                     "resume I/O from slot/link_reset\n", ha->host_no,
9717                      __func__);
9718         }
9719
9720         pci_cleanup_aer_uncorrect_error_status(pdev);
9721         clear_bit(AF_EEH_BUSY, &ha->flags);
9722 }
9723
9724 static const struct pci_error_handlers qla4xxx_err_handler = {
9725         .error_detected = qla4xxx_pci_error_detected,
9726         .mmio_enabled = qla4xxx_pci_mmio_enabled,
9727         .slot_reset = qla4xxx_pci_slot_reset,
9728         .resume = qla4xxx_pci_resume,
9729 };
9730
9731 static struct pci_device_id qla4xxx_pci_tbl[] = {
9732         {
9733                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9734                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
9735                 .subvendor      = PCI_ANY_ID,
9736                 .subdevice      = PCI_ANY_ID,
9737         },
9738         {
9739                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9740                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
9741                 .subvendor      = PCI_ANY_ID,
9742                 .subdevice      = PCI_ANY_ID,
9743         },
9744         {
9745                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9746                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
9747                 .subvendor      = PCI_ANY_ID,
9748                 .subdevice      = PCI_ANY_ID,
9749         },
9750         {
9751                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9752                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
9753                 .subvendor      = PCI_ANY_ID,
9754                 .subdevice      = PCI_ANY_ID,
9755         },
9756         {
9757                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9758                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
9759                 .subvendor      = PCI_ANY_ID,
9760                 .subdevice      = PCI_ANY_ID,
9761         },
9762         {
9763                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9764                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8042,
9765                 .subvendor      = PCI_ANY_ID,
9766                 .subdevice      = PCI_ANY_ID,
9767         },
9768         {0, 0},
9769 };
9770 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
9771
9772 static struct pci_driver qla4xxx_pci_driver = {
9773         .name           = DRIVER_NAME,
9774         .id_table       = qla4xxx_pci_tbl,
9775         .probe          = qla4xxx_probe_adapter,
9776         .remove         = qla4xxx_remove_adapter,
9777         .err_handler = &qla4xxx_err_handler,
9778 };
9779
9780 static int __init qla4xxx_module_init(void)
9781 {
9782         int ret;
9783
9784         /* Allocate cache for SRBs. */
9785         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
9786                                        SLAB_HWCACHE_ALIGN, NULL);
9787         if (srb_cachep == NULL) {
9788                 printk(KERN_ERR
9789                        "%s: Unable to allocate SRB cache..."
9790                        "Failing load!\n", DRIVER_NAME);
9791                 ret = -ENOMEM;
9792                 goto no_srp_cache;
9793         }
9794
9795         /* Derive version string. */
9796         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
9797         if (ql4xextended_error_logging)
9798                 strcat(qla4xxx_version_str, "-debug");
9799
9800         qla4xxx_scsi_transport =
9801                 iscsi_register_transport(&qla4xxx_iscsi_transport);
9802         if (!qla4xxx_scsi_transport){
9803                 ret = -ENODEV;
9804                 goto release_srb_cache;
9805         }
9806
9807         ret = pci_register_driver(&qla4xxx_pci_driver);
9808         if (ret)
9809                 goto unregister_transport;
9810
9811         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
9812         return 0;
9813
9814 unregister_transport:
9815         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9816 release_srb_cache:
9817         kmem_cache_destroy(srb_cachep);
9818 no_srp_cache:
9819         return ret;
9820 }
9821
9822 static void __exit qla4xxx_module_exit(void)
9823 {
9824         pci_unregister_driver(&qla4xxx_pci_driver);
9825         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9826         kmem_cache_destroy(srb_cachep);
9827 }
9828
9829 module_init(qla4xxx_module_init);
9830 module_exit(qla4xxx_module_exit);
9831
9832 MODULE_AUTHOR("QLogic Corporation");
9833 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
9834 MODULE_LICENSE("GPL");
9835 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);