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