Pileus Git - ~andy/linux/blob - drivers/net/cnic.c

   1 /* cnic.c: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2010 Broadcom Corporation
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation.
   8  *
   9  * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
  10  * Modified and maintained by: Michael Chan <mchan@broadcom.com>
  11  */
  12
  13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  14
  15 #include <linux/module.h>
  16
  17 #include <linux/kernel.h>
  18 #include <linux/errno.h>
  19 #include <linux/list.h>
  20 #include <linux/slab.h>
  21 #include <linux/pci.h>
  22 #include <linux/init.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/uio_driver.h>
  25 #include <linux/in.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/delay.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_vlan.h>
  30 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
  31 #define BCM_VLAN 1
  32 #endif
  33 #include <net/ip.h>
  34 #include <net/tcp.h>
  35 #include <net/route.h>
  36 #include <net/ipv6.h>
  37 #include <net/ip6_route.h>
  38 #include <net/ip6_checksum.h>
  39 #include <scsi/iscsi_if.h>
  40
  41 #include "cnic_if.h"
  42 #include "bnx2.h"
  43 #include "bnx2x/bnx2x_reg.h"
  44 #include "bnx2x/bnx2x_fw_defs.h"
  45 #include "bnx2x/bnx2x_hsi.h"
  46 #include "../scsi/bnx2i/57xx_iscsi_constants.h"
  47 #include "../scsi/bnx2i/57xx_iscsi_hsi.h"
  48 #include "cnic.h"
  49 #include "cnic_defs.h"
  50
  51 #define DRV_MODULE_NAME         "cnic"
  52
  53 static char version[] __devinitdata =
  54         "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  55
  56 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  57               "Chen (zongxi@broadcom.com");
  58 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
  59 MODULE_LICENSE("GPL");
  60 MODULE_VERSION(CNIC_MODULE_VERSION);
  61
  62 static LIST_HEAD(cnic_dev_list);
  63 static DEFINE_RWLOCK(cnic_dev_lock);
  64 static DEFINE_MUTEX(cnic_lock);
  65
  66 static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  67
  68 static int cnic_service_bnx2(void *, void *);
  69 static int cnic_service_bnx2x(void *, void *);
  70 static int cnic_ctl(void *, struct cnic_ctl_info *);
  71
  72 static struct cnic_ops cnic_bnx2_ops = {
  73         .cnic_owner     = THIS_MODULE,
  74         .cnic_handler   = cnic_service_bnx2,
  75         .cnic_ctl       = cnic_ctl,
  76 };
  77
  78 static struct cnic_ops cnic_bnx2x_ops = {
  79         .cnic_owner     = THIS_MODULE,
  80         .cnic_handler   = cnic_service_bnx2x,
  81         .cnic_ctl       = cnic_ctl,
  82 };
  83
  84 static void cnic_shutdown_rings(struct cnic_dev *);
  85 static void cnic_init_rings(struct cnic_dev *);
  86 static int cnic_cm_set_pg(struct cnic_sock *);
  87
  88 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
  89 {
  90         struct cnic_dev *dev = uinfo->priv;
  91         struct cnic_local *cp = dev->cnic_priv;
  92
  93         if (!capable(CAP_NET_ADMIN))
  94                 return -EPERM;
  95
  96         if (cp->uio_dev != -1)
  97                 return -EBUSY;
  98
  99         rtnl_lock();
 100         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 101                 rtnl_unlock();
 102                 return -ENODEV;
 103         }
 104
 105         cp->uio_dev = iminor(inode);
 106
 107         cnic_init_rings(dev);
 108         rtnl_unlock();
 109
 110         return 0;
 111 }
 112
 113 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 114 {
 115         struct cnic_dev *dev = uinfo->priv;
 116         struct cnic_local *cp = dev->cnic_priv;
 117
 118         cnic_shutdown_rings(dev);
 119
 120         cp->uio_dev = -1;
 121         return 0;
 122 }
 123
 124 static inline void cnic_hold(struct cnic_dev *dev)
 125 {
 126         atomic_inc(&dev->ref_count);
 127 }
 128
 129 static inline void cnic_put(struct cnic_dev *dev)
 130 {
 131         atomic_dec(&dev->ref_count);
 132 }
 133
 134 static inline void csk_hold(struct cnic_sock *csk)
 135 {
 136         atomic_inc(&csk->ref_count);
 137 }
 138
 139 static inline void csk_put(struct cnic_sock *csk)
 140 {
 141         atomic_dec(&csk->ref_count);
 142 }
 143
 144 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 145 {
 146         struct cnic_dev *cdev;
 147
 148         read_lock(&cnic_dev_lock);
 149         list_for_each_entry(cdev, &cnic_dev_list, list) {
 150                 if (netdev == cdev->netdev) {
 151                         cnic_hold(cdev);
 152                         read_unlock(&cnic_dev_lock);
 153                         return cdev;
 154                 }
 155         }
 156         read_unlock(&cnic_dev_lock);
 157         return NULL;
 158 }
 159
 160 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 161 {
 162         atomic_inc(&ulp_ops->ref_count);
 163 }
 164
 165 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 166 {
 167         atomic_dec(&ulp_ops->ref_count);
 168 }
 169
 170 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 171 {
 172         struct cnic_local *cp = dev->cnic_priv;
 173         struct cnic_eth_dev *ethdev = cp->ethdev;
 174         struct drv_ctl_info info;
 175         struct drv_ctl_io *io = &info.data.io;
 176
 177         info.cmd = DRV_CTL_CTX_WR_CMD;
 178         io->cid_addr = cid_addr;
 179         io->offset = off;
 180         io->data = val;
 181         ethdev->drv_ctl(dev->netdev, &info);
 182 }
 183
 184 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 185 {
 186         struct cnic_local *cp = dev->cnic_priv;
 187         struct cnic_eth_dev *ethdev = cp->ethdev;
 188         struct drv_ctl_info info;
 189         struct drv_ctl_io *io = &info.data.io;
 190
 191         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 192         io->offset = off;
 193         io->dma_addr = addr;
 194         ethdev->drv_ctl(dev->netdev, &info);
 195 }
 196
 197 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 198 {
 199         struct cnic_local *cp = dev->cnic_priv;
 200         struct cnic_eth_dev *ethdev = cp->ethdev;
 201         struct drv_ctl_info info;
 202         struct drv_ctl_l2_ring *ring = &info.data.ring;
 203
 204         if (start)
 205                 info.cmd = DRV_CTL_START_L2_CMD;
 206         else
 207                 info.cmd = DRV_CTL_STOP_L2_CMD;
 208
 209         ring->cid = cid;
 210         ring->client_id = cl_id;
 211         ethdev->drv_ctl(dev->netdev, &info);
 212 }
 213
 214 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 215 {
 216         struct cnic_local *cp = dev->cnic_priv;
 217         struct cnic_eth_dev *ethdev = cp->ethdev;
 218         struct drv_ctl_info info;
 219         struct drv_ctl_io *io = &info.data.io;
 220
 221         info.cmd = DRV_CTL_IO_WR_CMD;
 222         io->offset = off;
 223         io->data = val;
 224         ethdev->drv_ctl(dev->netdev, &info);
 225 }
 226
 227 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 228 {
 229         struct cnic_local *cp = dev->cnic_priv;
 230         struct cnic_eth_dev *ethdev = cp->ethdev;
 231         struct drv_ctl_info info;
 232         struct drv_ctl_io *io = &info.data.io;
 233
 234         info.cmd = DRV_CTL_IO_RD_CMD;
 235         io->offset = off;
 236         ethdev->drv_ctl(dev->netdev, &info);
 237         return io->data;
 238 }
 239
 240 static int cnic_in_use(struct cnic_sock *csk)
 241 {
 242         return test_bit(SK_F_INUSE, &csk->flags);
 243 }
 244
 245 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
 246 {
 247         struct cnic_local *cp = dev->cnic_priv;
 248         struct cnic_eth_dev *ethdev = cp->ethdev;
 249         struct drv_ctl_info info;
 250
 251         info.cmd = cmd;
 252         info.data.credit.credit_count = count;
 253         ethdev->drv_ctl(dev->netdev, &info);
 254 }
 255
 256 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 257 {
 258         u32 i;
 259
 260         for (i = 0; i < cp->max_cid_space; i++) {
 261                 if (cp->ctx_tbl[i].cid == cid) {
 262                         *l5_cid = i;
 263                         return 0;
 264                 }
 265         }
 266         return -EINVAL;
 267 }
 268
 269 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 270                            struct cnic_sock *csk)
 271 {
 272         struct iscsi_path path_req;
 273         char *buf = NULL;
 274         u16 len = 0;
 275         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 276         struct cnic_ulp_ops *ulp_ops;
 277
 278         if (cp->uio_dev == -1)
 279                 return -ENODEV;
 280
 281         if (csk) {
 282                 len = sizeof(path_req);
 283                 buf = (char *) &path_req;
 284                 memset(&path_req, 0, len);
 285
 286                 msg_type = ISCSI_KEVENT_PATH_REQ;
 287                 path_req.handle = (u64) csk->l5_cid;
 288                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 289                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 290                                sizeof(struct in6_addr));
 291                         path_req.ip_addr_len = 16;
 292                 } else {
 293                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 294                                sizeof(struct in_addr));
 295                         path_req.ip_addr_len = 4;
 296                 }
 297                 path_req.vlan_id = csk->vlan_id;
 298                 path_req.pmtu = csk->mtu;
 299         }
 300
 301         rcu_read_lock();
 302         ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
 303         if (ulp_ops)
 304                 ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len);
 305         rcu_read_unlock();
 306         return 0;
 307 }
 308
 309 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 310                                   char *buf, u16 len)
 311 {
 312         int rc = -EINVAL;
 313
 314         switch (msg_type) {
 315         case ISCSI_UEVENT_PATH_UPDATE: {
 316                 struct cnic_local *cp;
 317                 u32 l5_cid;
 318                 struct cnic_sock *csk;
 319                 struct iscsi_path *path_resp;
 320
 321                 if (len < sizeof(*path_resp))
 322                         break;
 323
 324                 path_resp = (struct iscsi_path *) buf;
 325                 cp = dev->cnic_priv;
 326                 l5_cid = (u32) path_resp->handle;
 327                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 328                         break;
 329
 330                 rcu_read_lock();
 331                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
 332                         rc = -ENODEV;
 333                         rcu_read_unlock();
 334                         break;
 335                 }
 336                 csk = &cp->csk_tbl[l5_cid];
 337                 csk_hold(csk);
 338                 if (cnic_in_use(csk)) {
 339                         memcpy(csk->ha, path_resp->mac_addr, 6);
 340                         if (test_bit(SK_F_IPV6, &csk->flags))
 341                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 342                                        sizeof(struct in6_addr));
 343                         else
 344                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 345                                        sizeof(struct in_addr));
 346                         if (is_valid_ether_addr(csk->ha))
 347                                 cnic_cm_set_pg(csk);
 348                 }
 349                 csk_put(csk);
 350                 rcu_read_unlock();
 351                 rc = 0;
 352         }
 353         }
 354
 355         return rc;
 356 }
 357
 358 static int cnic_offld_prep(struct cnic_sock *csk)
 359 {
 360         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 361                 return 0;
 362
 363         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 364                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 365                 return 0;
 366         }
 367
 368         return 1;
 369 }
 370
 371 static int cnic_close_prep(struct cnic_sock *csk)
 372 {
 373         clear_bit(SK_F_CONNECT_START, &csk->flags);
 374         smp_mb__after_clear_bit();
 375
 376         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 377                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 378                         msleep(1);
 379
 380                 return 1;
 381         }
 382         return 0;
 383 }
 384
 385 static int cnic_abort_prep(struct cnic_sock *csk)
 386 {
 387         clear_bit(SK_F_CONNECT_START, &csk->flags);
 388         smp_mb__after_clear_bit();
 389
 390         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 391                 msleep(1);
 392
 393         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 394                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 395                 return 1;
 396         }
 397
 398         return 0;
 399 }
 400
 401 static void cnic_uio_stop(void)
 402 {
 403         struct cnic_dev *dev;
 404
 405         read_lock(&cnic_dev_lock);
 406         list_for_each_entry(dev, &cnic_dev_list, list) {
 407                 struct cnic_local *cp = dev->cnic_priv;
 408
 409                 if (cp->cnic_uinfo)
 410                         cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 411         }
 412         read_unlock(&cnic_dev_lock);
 413 }
 414
 415 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 416 {
 417         struct cnic_dev *dev;
 418
 419         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 420                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 421                 return -EINVAL;
 422         }
 423         mutex_lock(&cnic_lock);
 424         if (cnic_ulp_tbl[ulp_type]) {
 425                 pr_err("%s: Type %d has already been registered\n",
 426                        __func__, ulp_type);
 427                 mutex_unlock(&cnic_lock);
 428                 return -EBUSY;
 429         }
 430
 431         read_lock(&cnic_dev_lock);
 432         list_for_each_entry(dev, &cnic_dev_list, list) {
 433                 struct cnic_local *cp = dev->cnic_priv;
 434
 435                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 436         }
 437         read_unlock(&cnic_dev_lock);
 438
 439         atomic_set(&ulp_ops->ref_count, 0);
 440         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 441         mutex_unlock(&cnic_lock);
 442
 443         /* Prevent race conditions with netdev_event */
 444         rtnl_lock();
 445         read_lock(&cnic_dev_lock);
 446         list_for_each_entry(dev, &cnic_dev_list, list) {
 447                 struct cnic_local *cp = dev->cnic_priv;
 448
 449                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 450                         ulp_ops->cnic_init(dev);
 451         }
 452         read_unlock(&cnic_dev_lock);
 453         rtnl_unlock();
 454
 455         return 0;
 456 }
 457
 458 int cnic_unregister_driver(int ulp_type)
 459 {
 460         struct cnic_dev *dev;
 461         struct cnic_ulp_ops *ulp_ops;
 462         int i = 0;
 463
 464         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 465                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 466                 return -EINVAL;
 467         }
 468         mutex_lock(&cnic_lock);
 469         ulp_ops = cnic_ulp_tbl[ulp_type];
 470         if (!ulp_ops) {
 471                 pr_err("%s: Type %d has not been registered\n",
 472                        __func__, ulp_type);
 473                 goto out_unlock;
 474         }
 475         read_lock(&cnic_dev_lock);
 476         list_for_each_entry(dev, &cnic_dev_list, list) {
 477                 struct cnic_local *cp = dev->cnic_priv;
 478
 479                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 480                         pr_err("%s: Type %d still has devices registered\n",
 481                                __func__, ulp_type);
 482                         read_unlock(&cnic_dev_lock);
 483                         goto out_unlock;
 484                 }
 485         }
 486         read_unlock(&cnic_dev_lock);
 487
 488         if (ulp_type == CNIC_ULP_ISCSI)
 489                 cnic_uio_stop();
 490
 491         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
 492
 493         mutex_unlock(&cnic_lock);
 494         synchronize_rcu();
 495         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 496                 msleep(100);
 497                 i++;
 498         }
 499
 500         if (atomic_read(&ulp_ops->ref_count) != 0)
 501                 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
 502         return 0;
 503
 504 out_unlock:
 505         mutex_unlock(&cnic_lock);
 506         return -EINVAL;
 507 }
 508
 509 static int cnic_start_hw(struct cnic_dev *);
 510 static void cnic_stop_hw(struct cnic_dev *);
 511
 512 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 513                                 void *ulp_ctx)
 514 {
 515         struct cnic_local *cp = dev->cnic_priv;
 516         struct cnic_ulp_ops *ulp_ops;
 517
 518         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 519                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 520                 return -EINVAL;
 521         }
 522         mutex_lock(&cnic_lock);
 523         if (cnic_ulp_tbl[ulp_type] == NULL) {
 524                 pr_err("%s: Driver with type %d has not been registered\n",
 525                        __func__, ulp_type);
 526                 mutex_unlock(&cnic_lock);
 527                 return -EAGAIN;
 528         }
 529         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 530                 pr_err("%s: Type %d has already been registered to this device\n",
 531                        __func__, ulp_type);
 532                 mutex_unlock(&cnic_lock);
 533                 return -EBUSY;
 534         }
 535
 536         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 537         cp->ulp_handle[ulp_type] = ulp_ctx;
 538         ulp_ops = cnic_ulp_tbl[ulp_type];
 539         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 540         cnic_hold(dev);
 541
 542         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 543                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 544                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 545
 546         mutex_unlock(&cnic_lock);
 547
 548         return 0;
 549
 550 }
 551 EXPORT_SYMBOL(cnic_register_driver);
 552
 553 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 554 {
 555         struct cnic_local *cp = dev->cnic_priv;
 556         int i = 0;
 557
 558         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 559                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 560                 return -EINVAL;
 561         }
 562         mutex_lock(&cnic_lock);
 563         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 564                 rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
 565                 cnic_put(dev);
 566         } else {
 567                 pr_err("%s: device not registered to this ulp type %d\n",
 568                        __func__, ulp_type);
 569                 mutex_unlock(&cnic_lock);
 570                 return -EINVAL;
 571         }
 572         mutex_unlock(&cnic_lock);
 573
 574         synchronize_rcu();
 575
 576         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 577                i < 20) {
 578                 msleep(100);
 579                 i++;
 580         }
 581         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 582                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 583
 584         return 0;
 585 }
 586 EXPORT_SYMBOL(cnic_unregister_driver);
 587
 588 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
 589 {
 590         id_tbl->start = start_id;
 591         id_tbl->max = size;
 592         id_tbl->next = 0;
 593         spin_lock_init(&id_tbl->lock);
 594         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 595         if (!id_tbl->table)
 596                 return -ENOMEM;
 597
 598         return 0;
 599 }
 600
 601 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 602 {
 603         kfree(id_tbl->table);
 604         id_tbl->table = NULL;
 605 }
 606
 607 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 608 {
 609         int ret = -1;
 610
 611         id -= id_tbl->start;
 612         if (id >= id_tbl->max)
 613                 return ret;
 614
 615         spin_lock(&id_tbl->lock);
 616         if (!test_bit(id, id_tbl->table)) {
 617                 set_bit(id, id_tbl->table);
 618                 ret = 0;
 619         }
 620         spin_unlock(&id_tbl->lock);
 621         return ret;
 622 }
 623
 624 /* Returns -1 if not successful */
 625 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 626 {
 627         u32 id;
 628
 629         spin_lock(&id_tbl->lock);
 630         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 631         if (id >= id_tbl->max) {
 632                 id = -1;
 633                 if (id_tbl->next != 0) {
 634                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 635                         if (id >= id_tbl->next)
 636                                 id = -1;
 637                 }
 638         }
 639
 640         if (id < id_tbl->max) {
 641                 set_bit(id, id_tbl->table);
 642                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 643                 id += id_tbl->start;
 644         }
 645
 646         spin_unlock(&id_tbl->lock);
 647
 648         return id;
 649 }
 650
 651 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 652 {
 653         if (id == -1)
 654                 return;
 655
 656         id -= id_tbl->start;
 657         if (id >= id_tbl->max)
 658                 return;
 659
 660         clear_bit(id, id_tbl->table);
 661 }
 662
 663 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 664 {
 665         int i;
 666
 667         if (!dma->pg_arr)
 668                 return;
 669
 670         for (i = 0; i < dma->num_pages; i++) {
 671                 if (dma->pg_arr[i]) {
 672                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
 673                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 674                         dma->pg_arr[i] = NULL;
 675                 }
 676         }
 677         if (dma->pgtbl) {
 678                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 679                                   dma->pgtbl, dma->pgtbl_map);
 680                 dma->pgtbl = NULL;
 681         }
 682         kfree(dma->pg_arr);
 683         dma->pg_arr = NULL;
 684         dma->num_pages = 0;
 685 }
 686
 687 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 688 {
 689         int i;
 690         u32 *page_table = dma->pgtbl;
 691
 692         for (i = 0; i < dma->num_pages; i++) {
 693                 /* Each entry needs to be in big endian format. */
 694                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 695                 page_table++;
 696                 *page_table = (u32) dma->pg_map_arr[i];
 697                 page_table++;
 698         }
 699 }
 700
 701 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 702 {
 703         int i;
 704         u32 *page_table = dma->pgtbl;
 705
 706         for (i = 0; i < dma->num_pages; i++) {
 707                 /* Each entry needs to be in little endian format. */
 708                 *page_table = dma->pg_map_arr[i] & 0xffffffff;
 709                 page_table++;
 710                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 711                 page_table++;
 712         }
 713 }
 714
 715 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 716                           int pages, int use_pg_tbl)
 717 {
 718         int i, size;
 719         struct cnic_local *cp = dev->cnic_priv;
 720
 721         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 722         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 723         if (dma->pg_arr == NULL)
 724                 return -ENOMEM;
 725
 726         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 727         dma->num_pages = pages;
 728
 729         for (i = 0; i < pages; i++) {
 730                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 731                                                     BCM_PAGE_SIZE,
 732                                                     &dma->pg_map_arr[i],
 733                                                     GFP_ATOMIC);
 734                 if (dma->pg_arr[i] == NULL)
 735                         goto error;
 736         }
 737         if (!use_pg_tbl)
 738                 return 0;
 739
 740         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 741                           ~(BCM_PAGE_SIZE - 1);
 742         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 743                                         &dma->pgtbl_map, GFP_ATOMIC);
 744         if (dma->pgtbl == NULL)
 745                 goto error;
 746
 747         cp->setup_pgtbl(dev, dma);
 748
 749         return 0;
 750
 751 error:
 752         cnic_free_dma(dev, dma);
 753         return -ENOMEM;
 754 }
 755
 756 static void cnic_free_context(struct cnic_dev *dev)
 757 {
 758         struct cnic_local *cp = dev->cnic_priv;
 759         int i;
 760
 761         for (i = 0; i < cp->ctx_blks; i++) {
 762                 if (cp->ctx_arr[i].ctx) {
 763                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 764                                           cp->ctx_arr[i].ctx,
 765                                           cp->ctx_arr[i].mapping);
 766                         cp->ctx_arr[i].ctx = NULL;
 767                 }
 768         }
 769 }
 770
 771 static void cnic_free_resc(struct cnic_dev *dev)
 772 {
 773         struct cnic_local *cp = dev->cnic_priv;
 774         int i = 0;
 775
 776         if (cp->cnic_uinfo) {
 777                 while (cp->uio_dev != -1 && i < 15) {
 778                         msleep(100);
 779                         i++;
 780                 }
 781                 uio_unregister_device(cp->cnic_uinfo);
 782                 kfree(cp->cnic_uinfo);
 783                 cp->cnic_uinfo = NULL;
 784         }
 785
 786         if (cp->l2_buf) {
 787                 dma_free_coherent(&dev->pcidev->dev, cp->l2_buf_size,
 788                                   cp->l2_buf, cp->l2_buf_map);
 789                 cp->l2_buf = NULL;
 790         }
 791
 792         if (cp->l2_ring) {
 793                 dma_free_coherent(&dev->pcidev->dev, cp->l2_ring_size,
 794                                   cp->l2_ring, cp->l2_ring_map);
 795                 cp->l2_ring = NULL;
 796         }
 797
 798         cnic_free_context(dev);
 799         kfree(cp->ctx_arr);
 800         cp->ctx_arr = NULL;
 801         cp->ctx_blks = 0;
 802
 803         cnic_free_dma(dev, &cp->gbl_buf_info);
 804         cnic_free_dma(dev, &cp->conn_buf_info);
 805         cnic_free_dma(dev, &cp->kwq_info);
 806         cnic_free_dma(dev, &cp->kwq_16_data_info);
 807         cnic_free_dma(dev, &cp->kcq1.dma);
 808         kfree(cp->iscsi_tbl);
 809         cp->iscsi_tbl = NULL;
 810         kfree(cp->ctx_tbl);
 811         cp->ctx_tbl = NULL;
 812
 813         cnic_free_id_tbl(&cp->cid_tbl);
 814 }
 815
 816 static int cnic_alloc_context(struct cnic_dev *dev)
 817 {
 818         struct cnic_local *cp = dev->cnic_priv;
 819
 820         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 821                 int i, k, arr_size;
 822
 823                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 824                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 825                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 826                            sizeof(struct cnic_ctx);
 827                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 828                 if (cp->ctx_arr == NULL)
 829                         return -ENOMEM;
 830
 831                 k = 0;
 832                 for (i = 0; i < 2; i++) {
 833                         u32 j, reg, off, lo, hi;
 834
 835                         if (i == 0)
 836                                 off = BNX2_PG_CTX_MAP;
 837                         else
 838                                 off = BNX2_ISCSI_CTX_MAP;
 839
 840                         reg = cnic_reg_rd_ind(dev, off);
 841                         lo = reg >> 16;
 842                         hi = reg & 0xffff;
 843                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 844                                 cp->ctx_arr[k].cid = j;
 845                 }
 846
 847                 cp->ctx_blks = k;
 848                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 849                         cp->ctx_blks = 0;
 850                         return -ENOMEM;
 851                 }
 852
 853                 for (i = 0; i < cp->ctx_blks; i++) {
 854                         cp->ctx_arr[i].ctx =
 855                                 dma_alloc_coherent(&dev->pcidev->dev,
 856                                                    BCM_PAGE_SIZE,
 857                                                    &cp->ctx_arr[i].mapping,
 858                                                    GFP_KERNEL);
 859                         if (cp->ctx_arr[i].ctx == NULL)
 860                                 return -ENOMEM;
 861                 }
 862         }
 863         return 0;
 864 }
 865
 866 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info)
 867 {
 868         int err, i, is_bnx2 = 0;
 869         struct kcqe **kcq;
 870
 871         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags))
 872                 is_bnx2 = 1;
 873
 874         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, is_bnx2);
 875         if (err)
 876                 return err;
 877
 878         kcq = (struct kcqe **) info->dma.pg_arr;
 879         info->kcq = kcq;
 880
 881         if (is_bnx2)
 882                 return 0;
 883
 884         for (i = 0; i < KCQ_PAGE_CNT; i++) {
 885                 struct bnx2x_bd_chain_next *next =
 886                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
 887                 int j = i + 1;
 888
 889                 if (j >= KCQ_PAGE_CNT)
 890                         j = 0;
 891                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
 892                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
 893         }
 894         return 0;
 895 }
 896
 897 static int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages)
 898 {
 899         struct cnic_local *cp = dev->cnic_priv;
 900
 901         cp->l2_ring_size = pages * BCM_PAGE_SIZE;
 902         cp->l2_ring = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_ring_size,
 903                                          &cp->l2_ring_map,
 904                                          GFP_KERNEL | __GFP_COMP);
 905         if (!cp->l2_ring)
 906                 return -ENOMEM;
 907
 908         cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
 909         cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size);
 910         cp->l2_buf = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_buf_size,
 911                                         &cp->l2_buf_map,
 912                                         GFP_KERNEL | __GFP_COMP);
 913         if (!cp->l2_buf)
 914                 return -ENOMEM;
 915
 916         return 0;
 917 }
 918
 919 static int cnic_alloc_uio(struct cnic_dev *dev) {
 920         struct cnic_local *cp = dev->cnic_priv;
 921         struct uio_info *uinfo;
 922         int ret;
 923
 924         uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC);
 925         if (!uinfo)
 926                 return -ENOMEM;
 927
 928         uinfo->mem[0].addr = dev->netdev->base_addr;
 929         uinfo->mem[0].internal_addr = dev->regview;
 930         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
 931         uinfo->mem[0].memtype = UIO_MEM_PHYS;
 932
 933         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
 934                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
 935                         PAGE_MASK;
 936                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
 937                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
 938                 else
 939                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
 940
 941                 uinfo->name = "bnx2_cnic";
 942         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
 943                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
 944                         PAGE_MASK;
 945                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
 946
 947                 uinfo->name = "bnx2x_cnic";
 948         }
 949
 950         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 951
 952         uinfo->mem[2].addr = (unsigned long) cp->l2_ring;
 953         uinfo->mem[2].size = cp->l2_ring_size;
 954         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
 955
 956         uinfo->mem[3].addr = (unsigned long) cp->l2_buf;
 957         uinfo->mem[3].size = cp->l2_buf_size;
 958         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
 959
 960         uinfo->version = CNIC_MODULE_VERSION;
 961         uinfo->irq = UIO_IRQ_CUSTOM;
 962
 963         uinfo->open = cnic_uio_open;
 964         uinfo->release = cnic_uio_close;
 965
 966         uinfo->priv = dev;
 967
 968         ret = uio_register_device(&dev->pcidev->dev, uinfo);
 969         if (ret) {
 970                 kfree(uinfo);
 971                 return ret;
 972         }
 973
 974         cp->cnic_uinfo = uinfo;
 975         return 0;
 976 }
 977
 978 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
 979 {
 980         struct cnic_local *cp = dev->cnic_priv;
 981         int ret;
 982
 983         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
 984         if (ret)
 985                 goto error;
 986         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
 987
 988         ret = cnic_alloc_kcq(dev, &cp->kcq1);
 989         if (ret)
 990                 goto error;
 991
 992         ret = cnic_alloc_context(dev);
 993         if (ret)
 994                 goto error;
 995
 996         ret = cnic_alloc_l2_rings(dev, 2);
 997         if (ret)
 998                 goto error;
 999
1000         ret = cnic_alloc_uio(dev);
1001         if (ret)
1002                 goto error;
1003
1004         return 0;
1005
1006 error:
1007         cnic_free_resc(dev);
1008         return ret;
1009 }
1010
1011 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1012 {
1013         struct cnic_local *cp = dev->cnic_priv;
1014         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1015         int total_mem, blks, i;
1016
1017         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1018         blks = total_mem / ctx_blk_size;
1019         if (total_mem % ctx_blk_size)
1020                 blks++;
1021
1022         if (blks > cp->ethdev->ctx_tbl_len)
1023                 return -ENOMEM;
1024
1025         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1026         if (cp->ctx_arr == NULL)
1027                 return -ENOMEM;
1028
1029         cp->ctx_blks = blks;
1030         cp->ctx_blk_size = ctx_blk_size;
1031         if (BNX2X_CHIP_IS_E1H(cp->chip_id))
1032                 cp->ctx_align = 0;
1033         else
1034                 cp->ctx_align = ctx_blk_size;
1035
1036         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1037
1038         for (i = 0; i < blks; i++) {
1039                 cp->ctx_arr[i].ctx =
1040                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1041                                            &cp->ctx_arr[i].mapping,
1042                                            GFP_KERNEL);
1043                 if (cp->ctx_arr[i].ctx == NULL)
1044                         return -ENOMEM;
1045
1046                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1047                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1048                                 cnic_free_context(dev);
1049                                 cp->ctx_blk_size += cp->ctx_align;
1050                                 i = -1;
1051                                 continue;
1052                         }
1053                 }
1054         }
1055         return 0;
1056 }
1057
1058 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1059 {
1060         struct cnic_local *cp = dev->cnic_priv;
1061         struct cnic_eth_dev *ethdev = cp->ethdev;
1062         u32 start_cid = ethdev->starting_cid;
1063         int i, j, n, ret, pages;
1064         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1065
1066         cp->iro_arr = ethdev->iro_arr;
1067
1068         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1069         cp->iscsi_start_cid = start_cid;
1070         if (start_cid < BNX2X_ISCSI_START_CID) {
1071                 u32 delta = BNX2X_ISCSI_START_CID - start_cid;
1072
1073                 cp->iscsi_start_cid = BNX2X_ISCSI_START_CID;
1074                 cp->max_cid_space += delta;
1075         }
1076
1077         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1078                                 GFP_KERNEL);
1079         if (!cp->iscsi_tbl)
1080                 goto error;
1081
1082         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1083                                 cp->max_cid_space, GFP_KERNEL);
1084         if (!cp->ctx_tbl)
1085                 goto error;
1086
1087         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1088                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1089                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1090         }
1091
1092         pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1093                 PAGE_SIZE;
1094
1095         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1096         if (ret)
1097                 return -ENOMEM;
1098
1099         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1100         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1101                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1102
1103                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1104                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1105                                                    off;
1106
1107                 if ((i % n) == (n - 1))
1108                         j++;
1109         }
1110
1111         ret = cnic_alloc_kcq(dev, &cp->kcq1);
1112         if (ret)
1113                 goto error;
1114
1115         pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
1116                            BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
1117         ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
1118         if (ret)
1119                 goto error;
1120
1121         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1122         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1123         if (ret)
1124                 goto error;
1125
1126         ret = cnic_alloc_bnx2x_context(dev);
1127         if (ret)
1128                 goto error;
1129
1130         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1131
1132         cp->l2_rx_ring_size = 15;
1133
1134         ret = cnic_alloc_l2_rings(dev, 4);
1135         if (ret)
1136                 goto error;
1137
1138         ret = cnic_alloc_uio(dev);
1139         if (ret)
1140                 goto error;
1141
1142         return 0;
1143
1144 error:
1145         cnic_free_resc(dev);
1146         return -ENOMEM;
1147 }
1148
1149 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1150 {
1151         return cp->max_kwq_idx -
1152                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1153 }
1154
1155 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1156                                   u32 num_wqes)
1157 {
1158         struct cnic_local *cp = dev->cnic_priv;
1159         struct kwqe *prod_qe;
1160         u16 prod, sw_prod, i;
1161
1162         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1163                 return -EAGAIN;         /* bnx2 is down */
1164
1165         spin_lock_bh(&cp->cnic_ulp_lock);
1166         if (num_wqes > cnic_kwq_avail(cp) &&
1167             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1168                 spin_unlock_bh(&cp->cnic_ulp_lock);
1169                 return -EAGAIN;
1170         }
1171
1172         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1173
1174         prod = cp->kwq_prod_idx;
1175         sw_prod = prod & MAX_KWQ_IDX;
1176         for (i = 0; i < num_wqes; i++) {
1177                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1178                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1179                 prod++;
1180                 sw_prod = prod & MAX_KWQ_IDX;
1181         }
1182         cp->kwq_prod_idx = prod;
1183
1184         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1185
1186         spin_unlock_bh(&cp->cnic_ulp_lock);
1187         return 0;
1188 }
1189
1190 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1191                                    union l5cm_specific_data *l5_data)
1192 {
1193         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1194         dma_addr_t map;
1195
1196         map = ctx->kwqe_data_mapping;
1197         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1198         l5_data->phy_address.hi = (u64) map >> 32;
1199         return ctx->kwqe_data;
1200 }
1201
1202 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1203                                 u32 type, union l5cm_specific_data *l5_data)
1204 {
1205         struct cnic_local *cp = dev->cnic_priv;
1206         struct l5cm_spe kwqe;
1207         struct kwqe_16 *kwq[1];
1208         int ret;
1209
1210         kwqe.hdr.conn_and_cmd_data =
1211                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1212                              BNX2X_HW_CID(cp, cid)));
1213         kwqe.hdr.type = cpu_to_le16(type);
1214         kwqe.hdr.reserved1 = 0;
1215         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1216         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1217
1218         kwq[0] = (struct kwqe_16 *) &kwqe;
1219
1220         spin_lock_bh(&cp->cnic_ulp_lock);
1221         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1222         spin_unlock_bh(&cp->cnic_ulp_lock);
1223
1224         if (ret == 1)
1225                 return 0;
1226
1227         return -EBUSY;
1228 }
1229
1230 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1231                                    struct kcqe *cqes[], u32 num_cqes)
1232 {
1233         struct cnic_local *cp = dev->cnic_priv;
1234         struct cnic_ulp_ops *ulp_ops;
1235
1236         rcu_read_lock();
1237         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1238         if (likely(ulp_ops)) {
1239                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1240                                           cqes, num_cqes);
1241         }
1242         rcu_read_unlock();
1243 }
1244
1245 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1246 {
1247         struct cnic_local *cp = dev->cnic_priv;
1248         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1249         int hq_bds, pages;
1250         u32 pfid = cp->pfid;
1251
1252         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1253         cp->num_ccells = req1->num_ccells_per_conn;
1254         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1255                               cp->num_iscsi_tasks;
1256         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1257                         BNX2X_ISCSI_R2TQE_SIZE;
1258         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1259         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1260         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1261         cp->num_cqs = req1->num_cqs;
1262
1263         if (!dev->max_iscsi_conn)
1264                 return 0;
1265
1266         /* init Tstorm RAM */
1267         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1268                   req1->rq_num_wqes);
1269         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1270                   PAGE_SIZE);
1271         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1272                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1273         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1274                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1275                   req1->num_tasks_per_conn);
1276
1277         /* init Ustorm RAM */
1278         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1279                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1280                   req1->rq_buffer_size);
1281         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1282                   PAGE_SIZE);
1283         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1284                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1285         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1286                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1287                   req1->num_tasks_per_conn);
1288         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1289                   req1->rq_num_wqes);
1290         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1291                   req1->cq_num_wqes);
1292         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1293                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1294
1295         /* init Xstorm RAM */
1296         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1297                   PAGE_SIZE);
1298         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1299                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1300         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1301                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1302                   req1->num_tasks_per_conn);
1303         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1304                   hq_bds);
1305         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1306                   req1->num_tasks_per_conn);
1307         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1308                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1309
1310         /* init Cstorm RAM */
1311         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1312                   PAGE_SIZE);
1313         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1314                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1315         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1316                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1317                   req1->num_tasks_per_conn);
1318         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1319                   req1->cq_num_wqes);
1320         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1321                   hq_bds);
1322
1323         return 0;
1324 }
1325
1326 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1327 {
1328         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1329         struct cnic_local *cp = dev->cnic_priv;
1330         u32 pfid = cp->pfid;
1331         struct iscsi_kcqe kcqe;
1332         struct kcqe *cqes[1];
1333
1334         memset(&kcqe, 0, sizeof(kcqe));
1335         if (!dev->max_iscsi_conn) {
1336                 kcqe.completion_status =
1337                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1338                 goto done;
1339         }
1340
1341         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1342                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1343         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1344                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1345                 req2->error_bit_map[1]);
1346
1347         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1348                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1349         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1350                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1351         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1352                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1353                 req2->error_bit_map[1]);
1354
1355         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1356                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1357
1358         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1359
1360 done:
1361         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1362         cqes[0] = (struct kcqe *) &kcqe;
1363         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1364
1365         return 0;
1366 }
1367
1368 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1369 {
1370         struct cnic_local *cp = dev->cnic_priv;
1371         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1372
1373         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1374                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1375
1376                 cnic_free_dma(dev, &iscsi->hq_info);
1377                 cnic_free_dma(dev, &iscsi->r2tq_info);
1378                 cnic_free_dma(dev, &iscsi->task_array_info);
1379         }
1380         cnic_free_id(&cp->cid_tbl, ctx->cid);
1381         ctx->cid = 0;
1382 }
1383
1384 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1385 {
1386         u32 cid;
1387         int ret, pages;
1388         struct cnic_local *cp = dev->cnic_priv;
1389         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1390         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1391
1392         cid = cnic_alloc_new_id(&cp->cid_tbl);
1393         if (cid == -1) {
1394                 ret = -ENOMEM;
1395                 goto error;
1396         }
1397
1398         ctx->cid = cid;
1399         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1400
1401         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1402         if (ret)
1403                 goto error;
1404
1405         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1406         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1407         if (ret)
1408                 goto error;
1409
1410         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1411         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1412         if (ret)
1413                 goto error;
1414
1415         return 0;
1416
1417 error:
1418         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1419         return ret;
1420 }
1421
1422 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1423                                 struct regpair *ctx_addr)
1424 {
1425         struct cnic_local *cp = dev->cnic_priv;
1426         struct cnic_eth_dev *ethdev = cp->ethdev;
1427         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1428         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1429         unsigned long align_off = 0;
1430         dma_addr_t ctx_map;
1431         void *ctx;
1432
1433         if (cp->ctx_align) {
1434                 unsigned long mask = cp->ctx_align - 1;
1435
1436                 if (cp->ctx_arr[blk].mapping & mask)
1437                         align_off = cp->ctx_align -
1438                                     (cp->ctx_arr[blk].mapping & mask);
1439         }
1440         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1441                 (off * BNX2X_CONTEXT_MEM_SIZE);
1442         ctx = cp->ctx_arr[blk].ctx + align_off +
1443               (off * BNX2X_CONTEXT_MEM_SIZE);
1444         if (init)
1445                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1446
1447         ctx_addr->lo = ctx_map & 0xffffffff;
1448         ctx_addr->hi = (u64) ctx_map >> 32;
1449         return ctx;
1450 }
1451
1452 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1453                                 u32 num)
1454 {
1455         struct cnic_local *cp = dev->cnic_priv;
1456         struct iscsi_kwqe_conn_offload1 *req1 =
1457                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1458         struct iscsi_kwqe_conn_offload2 *req2 =
1459                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1460         struct iscsi_kwqe_conn_offload3 *req3;
1461         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1462         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1463         u32 cid = ctx->cid;
1464         u32 hw_cid = BNX2X_HW_CID(cp, cid);
1465         struct iscsi_context *ictx;
1466         struct regpair context_addr;
1467         int i, j, n = 2, n_max;
1468
1469         ctx->ctx_flags = 0;
1470         if (!req2->num_additional_wqes)
1471                 return -EINVAL;
1472
1473         n_max = req2->num_additional_wqes + 2;
1474
1475         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1476         if (ictx == NULL)
1477                 return -ENOMEM;
1478
1479         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1480
1481         ictx->xstorm_ag_context.hq_prod = 1;
1482
1483         ictx->xstorm_st_context.iscsi.first_burst_length =
1484                 ISCSI_DEF_FIRST_BURST_LEN;
1485         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1486                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1487         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1488                 req1->sq_page_table_addr_lo;
1489         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1490                 req1->sq_page_table_addr_hi;
1491         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1492         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1493         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1494                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1495         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1496                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1497         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1498                 iscsi->hq_info.pgtbl[0];
1499         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1500                 iscsi->hq_info.pgtbl[1];
1501         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1502                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1503         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1504                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1505         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1506                 iscsi->r2tq_info.pgtbl[0];
1507         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1508                 iscsi->r2tq_info.pgtbl[1];
1509         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1510                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1511         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1512                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1513         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1514                 BNX2X_ISCSI_PBL_NOT_CACHED;
1515         ictx->xstorm_st_context.iscsi.flags.flags |=
1516                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1517         ictx->xstorm_st_context.iscsi.flags.flags |=
1518                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1519
1520         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1521         /* TSTORM requires the base address of RQ DB & not PTE */
1522         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1523                 req2->rq_page_table_addr_lo & PAGE_MASK;
1524         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1525                 req2->rq_page_table_addr_hi;
1526         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1527         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1528         ictx->tstorm_st_context.tcp.flags2 |=
1529                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1530         ictx->tstorm_st_context.tcp.ooo_support_mode =
1531                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1532
1533         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1534
1535         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1536                 req2->rq_page_table_addr_lo;
1537         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1538                 req2->rq_page_table_addr_hi;
1539         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1540         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1541         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1542                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1543         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1544                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1545         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1546                 iscsi->r2tq_info.pgtbl[0];
1547         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1548                 iscsi->r2tq_info.pgtbl[1];
1549         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1550                 req1->cq_page_table_addr_lo;
1551         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1552                 req1->cq_page_table_addr_hi;
1553         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1554         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1555         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1556         ictx->ustorm_st_context.task_pbe_cache_index =
1557                 BNX2X_ISCSI_PBL_NOT_CACHED;
1558         ictx->ustorm_st_context.task_pdu_cache_index =
1559                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1560
1561         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1562                 if (j == 3) {
1563                         if (n >= n_max)
1564                                 break;
1565                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1566                         j = 0;
1567                 }
1568                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1569                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1570                         req3->qp_first_pte[j].hi;
1571                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1572                         req3->qp_first_pte[j].lo;
1573         }
1574
1575         ictx->ustorm_st_context.task_pbl_base.lo =
1576                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1577         ictx->ustorm_st_context.task_pbl_base.hi =
1578                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1579         ictx->ustorm_st_context.tce_phy_addr.lo =
1580                 iscsi->task_array_info.pgtbl[0];
1581         ictx->ustorm_st_context.tce_phy_addr.hi =
1582                 iscsi->task_array_info.pgtbl[1];
1583         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1584         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1585         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1586         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1587                 ISCSI_DEF_MAX_BURST_LEN;
1588         ictx->ustorm_st_context.negotiated_rx |=
1589                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1590                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1591
1592         ictx->cstorm_st_context.hq_pbl_base.lo =
1593                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1594         ictx->cstorm_st_context.hq_pbl_base.hi =
1595                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1596         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1597         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1598         ictx->cstorm_st_context.task_pbl_base.lo =
1599                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1600         ictx->cstorm_st_context.task_pbl_base.hi =
1601                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1602         /* CSTORM and USTORM initialization is different, CSTORM requires
1603          * CQ DB base & not PTE addr */
1604         ictx->cstorm_st_context.cq_db_base.lo =
1605                 req1->cq_page_table_addr_lo & PAGE_MASK;
1606         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1607         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1608         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1609         for (i = 0; i < cp->num_cqs; i++) {
1610                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1611                         ISCSI_INITIAL_SN;
1612                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1613                         ISCSI_INITIAL_SN;
1614         }
1615
1616         ictx->xstorm_ag_context.cdu_reserved =
1617                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1618                                        ISCSI_CONNECTION_TYPE);
1619         ictx->ustorm_ag_context.cdu_usage =
1620                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1621                                        ISCSI_CONNECTION_TYPE);
1622         return 0;
1623
1624 }
1625
1626 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1627                                    u32 num, int *work)
1628 {
1629         struct iscsi_kwqe_conn_offload1 *req1;
1630         struct iscsi_kwqe_conn_offload2 *req2;
1631         struct cnic_local *cp = dev->cnic_priv;
1632         struct iscsi_kcqe kcqe;
1633         struct kcqe *cqes[1];
1634         u32 l5_cid;
1635         int ret;
1636
1637         if (num < 2) {
1638                 *work = num;
1639                 return -EINVAL;
1640         }
1641
1642         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1643         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1644         if ((num - 2) < req2->num_additional_wqes) {
1645                 *work = num;
1646                 return -EINVAL;
1647         }
1648         *work = 2 + req2->num_additional_wqes;;
1649
1650         l5_cid = req1->iscsi_conn_id;
1651         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1652                 return -EINVAL;
1653
1654         memset(&kcqe, 0, sizeof(kcqe));
1655         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1656         kcqe.iscsi_conn_id = l5_cid;
1657         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1658
1659         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1660                 atomic_dec(&cp->iscsi_conn);
1661                 ret = 0;
1662                 goto done;
1663         }
1664         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1665         if (ret) {
1666                 atomic_dec(&cp->iscsi_conn);
1667                 ret = 0;
1668                 goto done;
1669         }
1670         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1671         if (ret < 0) {
1672                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1673                 atomic_dec(&cp->iscsi_conn);
1674                 goto done;
1675         }
1676
1677         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1678         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1679
1680 done:
1681         cqes[0] = (struct kcqe *) &kcqe;
1682         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1683         return ret;
1684 }
1685
1686
1687 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1688 {
1689         struct cnic_local *cp = dev->cnic_priv;
1690         struct iscsi_kwqe_conn_update *req =
1691                 (struct iscsi_kwqe_conn_update *) kwqe;
1692         void *data;
1693         union l5cm_specific_data l5_data;
1694         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1695         int ret;
1696
1697         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1698                 return -EINVAL;
1699
1700         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1701         if (!data)
1702                 return -ENOMEM;
1703
1704         memcpy(data, kwqe, sizeof(struct kwqe));
1705
1706         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1707                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1708         return ret;
1709 }
1710
1711 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1712 {
1713         struct cnic_local *cp = dev->cnic_priv;
1714         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1715         union l5cm_specific_data l5_data;
1716         int ret;
1717         u32 hw_cid, type;
1718
1719         init_waitqueue_head(&ctx->waitq);
1720         ctx->wait_cond = 0;
1721         memset(&l5_data, 0, sizeof(l5_data));
1722         hw_cid = BNX2X_HW_CID(cp, ctx->cid);
1723         type = (NONE_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
1724                 & SPE_HDR_CONN_TYPE;
1725         type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1726                  SPE_HDR_FUNCTION_ID);
1727
1728         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1729                                   hw_cid, type, &l5_data);
1730
1731         if (ret == 0)
1732                 wait_event(ctx->waitq, ctx->wait_cond);
1733
1734         return ret;
1735 }
1736
1737 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1738 {
1739         struct cnic_local *cp = dev->cnic_priv;
1740         struct iscsi_kwqe_conn_destroy *req =
1741                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1742         u32 l5_cid = req->reserved0;
1743         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1744         int ret = 0;
1745         struct iscsi_kcqe kcqe;
1746         struct kcqe *cqes[1];
1747
1748         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1749                 goto skip_cfc_delete;
1750
1751         while (!time_after(jiffies, ctx->timestamp + (2 * HZ)))
1752                 msleep(250);
1753
1754         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
1755
1756 skip_cfc_delete:
1757         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1758
1759         atomic_dec(&cp->iscsi_conn);
1760
1761         memset(&kcqe, 0, sizeof(kcqe));
1762         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1763         kcqe.iscsi_conn_id = l5_cid;
1764         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1765         kcqe.iscsi_conn_context_id = req->context_id;
1766
1767         cqes[0] = (struct kcqe *) &kcqe;
1768         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1769
1770         return ret;
1771 }
1772
1773 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1774                                       struct l4_kwq_connect_req1 *kwqe1,
1775                                       struct l4_kwq_connect_req3 *kwqe3,
1776                                       struct l5cm_active_conn_buffer *conn_buf)
1777 {
1778         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1779         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1780                 &conn_buf->xstorm_conn_buffer;
1781         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1782                 &conn_buf->tstorm_conn_buffer;
1783         struct regpair context_addr;
1784         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1785         struct in6_addr src_ip, dst_ip;
1786         int i;
1787         u32 *addrp;
1788
1789         addrp = (u32 *) &conn_addr->local_ip_addr;
1790         for (i = 0; i < 4; i++, addrp++)
1791                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1792
1793         addrp = (u32 *) &conn_addr->remote_ip_addr;
1794         for (i = 0; i < 4; i++, addrp++)
1795                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1796
1797         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1798
1799         xstorm_buf->context_addr.hi = context_addr.hi;
1800         xstorm_buf->context_addr.lo = context_addr.lo;
1801         xstorm_buf->mss = 0xffff;
1802         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1803         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1804                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1805         xstorm_buf->pseudo_header_checksum =
1806                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1807
1808         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1809                 tstorm_buf->params |=
1810                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1811         if (kwqe3->ka_timeout) {
1812                 tstorm_buf->ka_enable = 1;
1813                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1814                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1815                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1816         }
1817         tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1818         tstorm_buf->snd_buf = kwqe3->snd_buf;
1819         tstorm_buf->max_rt_time = 0xffffffff;
1820 }
1821
1822 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1823 {
1824         struct cnic_local *cp = dev->cnic_priv;
1825         u32 pfid = cp->pfid;
1826         u8 *mac = dev->mac_addr;
1827
1828         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1829                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
1830         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1831                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
1832         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1833                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
1834         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1835                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
1836         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1837                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
1838         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1839                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
1840
1841         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1842                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
1843         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1844                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1845                  mac[4]);
1846         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1847                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
1848         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1849                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1850                  mac[2]);
1851         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1852                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 2,
1853                  mac[1]);
1854         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1855                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 3,
1856                  mac[0]);
1857 }
1858
1859 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1860 {
1861         struct cnic_local *cp = dev->cnic_priv;
1862         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1863         u16 tstorm_flags = 0;
1864
1865         if (tcp_ts) {
1866                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1867                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1868         }
1869
1870         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1871                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
1872
1873         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1874                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
1875 }
1876
1877 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
1878                               u32 num, int *work)
1879 {
1880         struct cnic_local *cp = dev->cnic_priv;
1881         struct l4_kwq_connect_req1 *kwqe1 =
1882                 (struct l4_kwq_connect_req1 *) wqes[0];
1883         struct l4_kwq_connect_req3 *kwqe3;
1884         struct l5cm_active_conn_buffer *conn_buf;
1885         struct l5cm_conn_addr_params *conn_addr;
1886         union l5cm_specific_data l5_data;
1887         u32 l5_cid = kwqe1->pg_cid;
1888         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
1889         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1890         int ret;
1891
1892         if (num < 2) {
1893                 *work = num;
1894                 return -EINVAL;
1895         }
1896
1897         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
1898                 *work = 3;
1899         else
1900                 *work = 2;
1901
1902         if (num < *work) {
1903                 *work = num;
1904                 return -EINVAL;
1905         }
1906
1907         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
1908                 netdev_err(dev->netdev, "conn_buf size too big\n");
1909                 return -ENOMEM;
1910         }
1911         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1912         if (!conn_buf)
1913                 return -ENOMEM;
1914
1915         memset(conn_buf, 0, sizeof(*conn_buf));
1916
1917         conn_addr = &conn_buf->conn_addr_buf;
1918         conn_addr->remote_addr_0 = csk->ha[0];
1919         conn_addr->remote_addr_1 = csk->ha[1];
1920         conn_addr->remote_addr_2 = csk->ha[2];
1921         conn_addr->remote_addr_3 = csk->ha[3];
1922         conn_addr->remote_addr_4 = csk->ha[4];
1923         conn_addr->remote_addr_5 = csk->ha[5];
1924
1925         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
1926                 struct l4_kwq_connect_req2 *kwqe2 =
1927                         (struct l4_kwq_connect_req2 *) wqes[1];
1928
1929                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
1930                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
1931                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
1932
1933                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
1934                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
1935                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
1936                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
1937         }
1938         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
1939
1940         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
1941         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
1942         conn_addr->local_tcp_port = kwqe1->src_port;
1943         conn_addr->remote_tcp_port = kwqe1->dst_port;
1944
1945         conn_addr->pmtu = kwqe3->pmtu;
1946         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
1947
1948         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1949                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
1950
1951         cnic_bnx2x_set_tcp_timestamp(dev,
1952                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
1953
1954         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
1955                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1956         if (!ret)
1957                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1958
1959         return ret;
1960 }
1961
1962 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
1963 {
1964         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
1965         union l5cm_specific_data l5_data;
1966         int ret;
1967
1968         memset(&l5_data, 0, sizeof(l5_data));
1969         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
1970                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1971         return ret;
1972 }
1973
1974 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
1975 {
1976         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
1977         union l5cm_specific_data l5_data;
1978         int ret;
1979
1980         memset(&l5_data, 0, sizeof(l5_data));
1981         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
1982                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1983         return ret;
1984 }
1985 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1986 {
1987         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
1988         struct l4_kcq kcqe;
1989         struct kcqe *cqes[1];
1990
1991         memset(&kcqe, 0, sizeof(kcqe));
1992         kcqe.pg_host_opaque = req->host_opaque;
1993         kcqe.pg_cid = req->host_opaque;
1994         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
1995         cqes[0] = (struct kcqe *) &kcqe;
1996         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1997         return 0;
1998 }
1999
2000 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2001 {
2002         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2003         struct l4_kcq kcqe;
2004         struct kcqe *cqes[1];
2005
2006         memset(&kcqe, 0, sizeof(kcqe));
2007         kcqe.pg_host_opaque = req->pg_host_opaque;
2008         kcqe.pg_cid = req->pg_cid;
2009         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2010         cqes[0] = (struct kcqe *) &kcqe;
2011         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2012         return 0;
2013 }
2014
2015 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2016                                    u32 num_wqes)
2017 {
2018         int i, work, ret;
2019         u32 opcode;
2020         struct kwqe *kwqe;
2021
2022         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2023                 return -EAGAIN;         /* bnx2 is down */
2024
2025         for (i = 0; i < num_wqes; ) {
2026                 kwqe = wqes[i];
2027                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2028                 work = 1;
2029
2030                 switch (opcode) {
2031                 case ISCSI_KWQE_OPCODE_INIT1:
2032                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2033                         break;
2034                 case ISCSI_KWQE_OPCODE_INIT2:
2035                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2036                         break;
2037                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2038                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2039                                                      num_wqes - i, &work);
2040                         break;
2041                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2042                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2043                         break;
2044                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2045                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2046                         break;
2047                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2048                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2049                                                  &work);
2050                         break;
2051                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2052                         ret = cnic_bnx2x_close(dev, kwqe);
2053                         break;
2054                 case L4_KWQE_OPCODE_VALUE_RESET:
2055                         ret = cnic_bnx2x_reset(dev, kwqe);
2056                         break;
2057                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2058                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2059                         break;
2060                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2061                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2062                         break;
2063                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2064                         ret = 0;
2065                         break;
2066                 default:
2067                         ret = 0;
2068                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2069                                    opcode);
2070                         break;
2071                 }
2072                 if (ret < 0)
2073                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2074                                    opcode);
2075                 i += work;
2076         }
2077         return 0;
2078 }
2079
2080 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2081 {
2082         struct cnic_local *cp = dev->cnic_priv;
2083         int i, j, comp = 0;
2084
2085         i = 0;
2086         j = 1;
2087         while (num_cqes) {
2088                 struct cnic_ulp_ops *ulp_ops;
2089                 int ulp_type;
2090                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2091                 u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;
2092
2093                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2094                         comp++;
2095
2096                 while (j < num_cqes) {
2097                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2098
2099                         if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
2100                                 break;
2101
2102                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2103                                 comp++;
2104                         j++;
2105                 }
2106
2107                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2108                         ulp_type = CNIC_ULP_RDMA;
2109                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2110                         ulp_type = CNIC_ULP_ISCSI;
2111                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2112                         ulp_type = CNIC_ULP_L4;
2113                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2114                         goto end;
2115                 else {
2116                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2117                                    kcqe_op_flag);
2118                         goto end;
2119                 }
2120
2121                 rcu_read_lock();
2122                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2123                 if (likely(ulp_ops)) {
2124                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2125                                                   cp->completed_kcq + i, j);
2126                 }
2127                 rcu_read_unlock();
2128 end:
2129                 num_cqes -= j;
2130                 i += j;
2131                 j = 1;
2132         }
2133         if (unlikely(comp))
2134                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2135 }
2136
2137 static u16 cnic_bnx2_next_idx(u16 idx)
2138 {
2139         return idx + 1;
2140 }
2141
2142 static u16 cnic_bnx2_hw_idx(u16 idx)
2143 {
2144         return idx;
2145 }
2146
2147 static u16 cnic_bnx2x_next_idx(u16 idx)
2148 {
2149         idx++;
2150         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2151                 idx++;
2152
2153         return idx;
2154 }
2155
2156 static u16 cnic_bnx2x_hw_idx(u16 idx)
2157 {
2158         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2159                 idx++;
2160         return idx;
2161 }
2162
2163 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2164 {
2165         struct cnic_local *cp = dev->cnic_priv;
2166         u16 i, ri, hw_prod, last;
2167         struct kcqe *kcqe;
2168         int kcqe_cnt = 0, last_cnt = 0;
2169
2170         i = ri = last = info->sw_prod_idx;
2171         ri &= MAX_KCQ_IDX;
2172         hw_prod = *info->hw_prod_idx_ptr;
2173         hw_prod = cp->hw_idx(hw_prod);
2174
2175         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2176                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2177                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2178                 i = cp->next_idx(i);
2179                 ri = i & MAX_KCQ_IDX;
2180                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2181                         last_cnt = kcqe_cnt;
2182                         last = i;
2183                 }
2184         }
2185
2186         info->sw_prod_idx = last;
2187         return last_cnt;
2188 }
2189
2190 static int cnic_l2_completion(struct cnic_local *cp)
2191 {
2192         u16 hw_cons, sw_cons;
2193         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2194                                         (cp->l2_ring + (2 * BCM_PAGE_SIZE));
2195         u32 cmd;
2196         int comp = 0;
2197
2198         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2199                 return 0;
2200
2201         hw_cons = *cp->rx_cons_ptr;
2202         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2203                 hw_cons++;
2204
2205         sw_cons = cp->rx_cons;
2206         while (sw_cons != hw_cons) {
2207                 u8 cqe_fp_flags;
2208
2209                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2210                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2211                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2212                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2213                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2214                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2215                             cmd == RAMROD_CMD_ID_ETH_HALT)
2216                                 comp++;
2217                 }
2218                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2219         }
2220         return comp;
2221 }
2222
2223 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2224 {
2225         u16 rx_cons, tx_cons;
2226         int comp = 0;
2227
2228         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2229                 return;
2230
2231         rx_cons = *cp->rx_cons_ptr;
2232         tx_cons = *cp->tx_cons_ptr;
2233         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2234                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2235                         comp = cnic_l2_completion(cp);
2236
2237                 cp->tx_cons = tx_cons;
2238                 cp->rx_cons = rx_cons;
2239
2240                 uio_event_notify(cp->cnic_uinfo);
2241         }
2242         if (comp)
2243                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2244 }
2245
2246 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2247 {
2248         struct cnic_local *cp = dev->cnic_priv;
2249         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2250         int kcqe_cnt;
2251
2252         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2253
2254         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2255
2256                 service_kcqes(dev, kcqe_cnt);
2257
2258                 /* Tell compiler that status_blk fields can change. */
2259                 barrier();
2260                 if (status_idx != *cp->kcq1.status_idx_ptr) {
2261                         status_idx = (u16) *cp->kcq1.status_idx_ptr;
2262                         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2263                 } else
2264                         break;
2265         }
2266
2267         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2268
2269         cnic_chk_pkt_rings(cp);
2270
2271         return status_idx;
2272 }
2273
2274 static int cnic_service_bnx2(void *data, void *status_blk)
2275 {
2276         struct cnic_dev *dev = data;
2277         struct cnic_local *cp = dev->cnic_priv;
2278         u32 status_idx = *cp->kcq1.status_idx_ptr;
2279
2280         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2281                 return status_idx;
2282
2283         return cnic_service_bnx2_queues(dev);
2284 }
2285
2286 static void cnic_service_bnx2_msix(unsigned long data)
2287 {
2288         struct cnic_dev *dev = (struct cnic_dev *) data;
2289         struct cnic_local *cp = dev->cnic_priv;
2290
2291         cp->last_status_idx = cnic_service_bnx2_queues(dev);
2292
2293         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2294                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2295 }
2296
2297 static void cnic_doirq(struct cnic_dev *dev)
2298 {
2299         struct cnic_local *cp = dev->cnic_priv;
2300         u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
2301
2302         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2303                 prefetch(cp->status_blk.gen);
2304                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2305
2306                 tasklet_schedule(&cp->cnic_irq_task);
2307         }
2308 }
2309
2310 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2311 {
2312         struct cnic_dev *dev = dev_instance;
2313         struct cnic_local *cp = dev->cnic_priv;
2314
2315         if (cp->ack_int)
2316                 cp->ack_int(dev);
2317
2318         cnic_doirq(dev);
2319
2320         return IRQ_HANDLED;
2321 }
2322
2323 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2324                                       u16 index, u8 op, u8 update)
2325 {
2326         struct cnic_local *cp = dev->cnic_priv;
2327         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2328                        COMMAND_REG_INT_ACK);
2329         struct igu_ack_register igu_ack;
2330
2331         igu_ack.status_block_index = index;
2332         igu_ack.sb_id_and_flags =
2333                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2334                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2335                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2336                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2337
2338         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2339 }
2340
2341 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2342 {
2343         struct cnic_local *cp = dev->cnic_priv;
2344
2345         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
2346                            IGU_INT_DISABLE, 0);
2347 }
2348
2349 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
2350 {
2351         u32 last_status = *info->status_idx_ptr;
2352         int kcqe_cnt;
2353
2354         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
2355
2356                 service_kcqes(dev, kcqe_cnt);
2357
2358                 /* Tell compiler that sblk fields can change. */
2359                 barrier();
2360                 if (last_status == *info->status_idx_ptr)
2361                         break;
2362
2363                 last_status = *info->status_idx_ptr;
2364         }
2365         return last_status;
2366 }
2367
2368 static void cnic_service_bnx2x_bh(unsigned long data)
2369 {
2370         struct cnic_dev *dev = (struct cnic_dev *) data;
2371         struct cnic_local *cp = dev->cnic_priv;
2372         u32 status_idx;
2373
2374         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2375                 return;
2376
2377         status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
2378
2379         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
2380         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
2381                            status_idx, IGU_INT_ENABLE, 1);
2382 }
2383
2384 static int cnic_service_bnx2x(void *data, void *status_blk)
2385 {
2386         struct cnic_dev *dev = data;
2387         struct cnic_local *cp = dev->cnic_priv;
2388
2389         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
2390                 cnic_doirq(dev);
2391
2392         cnic_chk_pkt_rings(cp);
2393
2394         return 0;
2395 }
2396
2397 static void cnic_ulp_stop(struct cnic_dev *dev)
2398 {
2399         struct cnic_local *cp = dev->cnic_priv;
2400         int if_type;
2401
2402         if (cp->cnic_uinfo)
2403                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2404
2405         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2406                 struct cnic_ulp_ops *ulp_ops;
2407
2408                 mutex_lock(&cnic_lock);
2409                 ulp_ops = cp->ulp_ops[if_type];
2410                 if (!ulp_ops) {
2411                         mutex_unlock(&cnic_lock);
2412                         continue;
2413                 }
2414                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2415                 mutex_unlock(&cnic_lock);
2416
2417                 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2418                         ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2419
2420                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2421         }
2422 }
2423
2424 static void cnic_ulp_start(struct cnic_dev *dev)
2425 {
2426         struct cnic_local *cp = dev->cnic_priv;
2427         int if_type;
2428
2429         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2430                 struct cnic_ulp_ops *ulp_ops;
2431
2432                 mutex_lock(&cnic_lock);
2433                 ulp_ops = cp->ulp_ops[if_type];
2434                 if (!ulp_ops || !ulp_ops->cnic_start) {
2435                         mutex_unlock(&cnic_lock);
2436                         continue;
2437                 }
2438                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2439                 mutex_unlock(&cnic_lock);
2440
2441                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2442                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2443
2444                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2445         }
2446 }
2447
2448 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
2449 {
2450         struct cnic_dev *dev = data;
2451
2452         switch (info->cmd) {
2453         case CNIC_CTL_STOP_CMD:
2454                 cnic_hold(dev);
2455
2456                 cnic_ulp_stop(dev);
2457                 cnic_stop_hw(dev);
2458
2459                 cnic_put(dev);
2460                 break;
2461         case CNIC_CTL_START_CMD:
2462                 cnic_hold(dev);
2463
2464                 if (!cnic_start_hw(dev))
2465                         cnic_ulp_start(dev);
2466
2467                 cnic_put(dev);
2468                 break;
2469         case CNIC_CTL_COMPLETION_CMD: {
2470                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
2471                 u32 l5_cid;
2472                 struct cnic_local *cp = dev->cnic_priv;
2473
2474                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
2475                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2476
2477                         ctx->wait_cond = 1;
2478                         wake_up(&ctx->waitq);
2479                 }
2480                 break;
2481         }
2482         default:
2483                 return -EINVAL;
2484         }
2485         return 0;
2486 }
2487
2488 static void cnic_ulp_init(struct cnic_dev *dev)
2489 {
2490         int i;
2491         struct cnic_local *cp = dev->cnic_priv;
2492
2493         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2494                 struct cnic_ulp_ops *ulp_ops;
2495
2496                 mutex_lock(&cnic_lock);
2497                 ulp_ops = cnic_ulp_tbl[i];
2498                 if (!ulp_ops || !ulp_ops->cnic_init) {
2499                         mutex_unlock(&cnic_lock);
2500                         continue;
2501                 }
2502                 ulp_get(ulp_ops);
2503                 mutex_unlock(&cnic_lock);
2504
2505                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2506                         ulp_ops->cnic_init(dev);
2507
2508                 ulp_put(ulp_ops);
2509         }
2510 }
2511
2512 static void cnic_ulp_exit(struct cnic_dev *dev)
2513 {
2514         int i;
2515         struct cnic_local *cp = dev->cnic_priv;
2516
2517         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2518                 struct cnic_ulp_ops *ulp_ops;
2519
2520                 mutex_lock(&cnic_lock);
2521                 ulp_ops = cnic_ulp_tbl[i];
2522                 if (!ulp_ops || !ulp_ops->cnic_exit) {
2523                         mutex_unlock(&cnic_lock);
2524                         continue;
2525                 }
2526                 ulp_get(ulp_ops);
2527                 mutex_unlock(&cnic_lock);
2528
2529                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2530                         ulp_ops->cnic_exit(dev);
2531
2532                 ulp_put(ulp_ops);
2533         }
2534 }
2535
2536 static int cnic_cm_offload_pg(struct cnic_sock *csk)
2537 {
2538         struct cnic_dev *dev = csk->dev;
2539         struct l4_kwq_offload_pg *l4kwqe;
2540         struct kwqe *wqes[1];
2541
2542         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
2543         memset(l4kwqe, 0, sizeof(*l4kwqe));
2544         wqes[0] = (struct kwqe *) l4kwqe;
2545
2546         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
2547         l4kwqe->flags =
2548                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
2549         l4kwqe->l2hdr_nbytes = ETH_HLEN;
2550
2551         l4kwqe->da0 = csk->ha[0];
2552         l4kwqe->da1 = csk->ha[1];
2553         l4kwqe->da2 = csk->ha[2];
2554         l4kwqe->da3 = csk->ha[3];
2555         l4kwqe->da4 = csk->ha[4];
2556         l4kwqe->da5 = csk->ha[5];
2557
2558         l4kwqe->sa0 = dev->mac_addr[0];
2559         l4kwqe->sa1 = dev->mac_addr[1];
2560         l4kwqe->sa2 = dev->mac_addr[2];
2561         l4kwqe->sa3 = dev->mac_addr[3];
2562         l4kwqe->sa4 = dev->mac_addr[4];
2563         l4kwqe->sa5 = dev->mac_addr[5];
2564
2565         l4kwqe->etype = ETH_P_IP;
2566         l4kwqe->ipid_start = DEF_IPID_START;
2567         l4kwqe->host_opaque = csk->l5_cid;
2568
2569         if (csk->vlan_id) {
2570                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
2571                 l4kwqe->vlan_tag = csk->vlan_id;
2572                 l4kwqe->l2hdr_nbytes += 4;
2573         }
2574
2575         return dev->submit_kwqes(dev, wqes, 1);
2576 }
2577
2578 static int cnic_cm_update_pg(struct cnic_sock *csk)
2579 {
2580         struct cnic_dev *dev = csk->dev;
2581         struct l4_kwq_update_pg *l4kwqe;
2582         struct kwqe *wqes[1];
2583
2584         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
2585         memset(l4kwqe, 0, sizeof(*l4kwqe));
2586         wqes[0] = (struct kwqe *) l4kwqe;
2587
2588         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
2589         l4kwqe->flags =
2590                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
2591         l4kwqe->pg_cid = csk->pg_cid;
2592
2593         l4kwqe->da0 = csk->ha[0];
2594         l4kwqe->da1 = csk->ha[1];
2595         l4kwqe->da2 = csk->ha[2];
2596         l4kwqe->da3 = csk->ha[3];
2597         l4kwqe->da4 = csk->ha[4];
2598         l4kwqe->da5 = csk->ha[5];
2599
2600         l4kwqe->pg_host_opaque = csk->l5_cid;
2601         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
2602
2603         return dev->submit_kwqes(dev, wqes, 1);
2604 }
2605
2606 static int cnic_cm_upload_pg(struct cnic_sock *csk)
2607 {
2608         struct cnic_dev *dev = csk->dev;
2609         struct l4_kwq_upload *l4kwqe;
2610         struct kwqe *wqes[1];
2611
2612         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
2613         memset(l4kwqe, 0, sizeof(*l4kwqe));
2614         wqes[0] = (struct kwqe *) l4kwqe;
2615
2616         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
2617         l4kwqe->flags =
2618                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
2619         l4kwqe->cid = csk->pg_cid;
2620
2621         return dev->submit_kwqes(dev, wqes, 1);
2622 }
2623
2624 static int cnic_cm_conn_req(struct cnic_sock *csk)
2625 {
2626         struct cnic_dev *dev = csk->dev;
2627         struct l4_kwq_connect_req1 *l4kwqe1;
2628         struct l4_kwq_connect_req2 *l4kwqe2;
2629         struct l4_kwq_connect_req3 *l4kwqe3;
2630         struct kwqe *wqes[3];
2631         u8 tcp_flags = 0;
2632         int num_wqes = 2;
2633
2634         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
2635         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
2636         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
2637         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
2638         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
2639         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
2640
2641         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
2642         l4kwqe3->flags =
2643                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
2644         l4kwqe3->ka_timeout = csk->ka_timeout;
2645         l4kwqe3->ka_interval = csk->ka_interval;
2646         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
2647         l4kwqe3->tos = csk->tos;
2648         l4kwqe3->ttl = csk->ttl;
2649         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
2650         l4kwqe3->pmtu = csk->mtu;
2651         l4kwqe3->rcv_buf = csk->rcv_buf;
2652         l4kwqe3->snd_buf = csk->snd_buf;
2653         l4kwqe3->seed = csk->seed;
2654
2655         wqes[0] = (struct kwqe *) l4kwqe1;
2656         if (test_bit(SK_F_IPV6, &csk->flags)) {
2657                 wqes[1] = (struct kwqe *) l4kwqe2;
2658                 wqes[2] = (struct kwqe *) l4kwqe3;
2659                 num_wqes = 3;
2660
2661                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
2662                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
2663                 l4kwqe2->flags =
2664                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
2665                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
2666                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
2667                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
2668                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
2669                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
2670                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
2671                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
2672                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
2673                                sizeof(struct tcphdr);
2674         } else {
2675                 wqes[1] = (struct kwqe *) l4kwqe3;
2676                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
2677                                sizeof(struct tcphdr);
2678         }
2679
2680         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
2681         l4kwqe1->flags =
2682                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
2683                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
2684         l4kwqe1->cid = csk->cid;
2685         l4kwqe1->pg_cid = csk->pg_cid;
2686         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
2687         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
2688         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
2689         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
2690         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
2691                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
2692         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
2693                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
2694         if (csk->tcp_flags & SK_TCP_NAGLE)
2695                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
2696         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
2697                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
2698         if (csk->tcp_flags & SK_TCP_SACK)
2699                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
2700         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
2701                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
2702
2703         l4kwqe1->tcp_flags = tcp_flags;
2704
2705         return dev->submit_kwqes(dev, wqes, num_wqes);
2706 }
2707
2708 static int cnic_cm_close_req(struct cnic_sock *csk)
2709 {
2710         struct cnic_dev *dev = csk->dev;
2711         struct l4_kwq_close_req *l4kwqe;
2712         struct kwqe *wqes[1];
2713
2714         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
2715         memset(l4kwqe, 0, sizeof(*l4kwqe));
2716         wqes[0] = (struct kwqe *) l4kwqe;
2717
2718         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
2719         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
2720         l4kwqe->cid = csk->cid;
2721
2722         return dev->submit_kwqes(dev, wqes, 1);
2723 }
2724
2725 static int cnic_cm_abort_req(struct cnic_sock *csk)
2726 {
2727         struct cnic_dev *dev = csk->dev;
2728         struct l4_kwq_reset_req *l4kwqe;
2729         struct kwqe *wqes[1];
2730
2731         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
2732         memset(l4kwqe, 0, sizeof(*l4kwqe));
2733         wqes[0] = (struct kwqe *) l4kwqe;
2734
2735         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
2736         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
2737         l4kwqe->cid = csk->cid;
2738
2739         return dev->submit_kwqes(dev, wqes, 1);
2740 }
2741
2742 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
2743                           u32 l5_cid, struct cnic_sock **csk, void *context)
2744 {
2745         struct cnic_local *cp = dev->cnic_priv;
2746         struct cnic_sock *csk1;
2747
2748         if (l5_cid >= MAX_CM_SK_TBL_SZ)
2749                 return -EINVAL;
2750
2751         csk1 = &cp->csk_tbl[l5_cid];
2752         if (atomic_read(&csk1->ref_count))
2753                 return -EAGAIN;
2754
2755         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
2756                 return -EBUSY;
2757
2758         csk1->dev = dev;
2759         csk1->cid = cid;
2760         csk1->l5_cid = l5_cid;
2761         csk1->ulp_type = ulp_type;
2762         csk1->context = context;
2763
2764         csk1->ka_timeout = DEF_KA_TIMEOUT;
2765         csk1->ka_interval = DEF_KA_INTERVAL;
2766         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
2767         csk1->tos = DEF_TOS;
2768         csk1->ttl = DEF_TTL;
2769         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
2770         csk1->rcv_buf = DEF_RCV_BUF;
2771         csk1->snd_buf = DEF_SND_BUF;
2772         csk1->seed = DEF_SEED;
2773
2774         *csk = csk1;
2775         return 0;
2776 }
2777
2778 static void cnic_cm_cleanup(struct cnic_sock *csk)
2779 {
2780         if (csk->src_port) {
2781                 struct cnic_dev *dev = csk->dev;
2782                 struct cnic_local *cp = dev->cnic_priv;
2783
2784                 cnic_free_id(&cp->csk_port_tbl, csk->src_port);
2785                 csk->src_port = 0;
2786         }
2787 }
2788
2789 static void cnic_close_conn(struct cnic_sock *csk)
2790 {
2791         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
2792                 cnic_cm_upload_pg(csk);
2793                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
2794         }
2795         cnic_cm_cleanup(csk);
2796 }
2797
2798 static int cnic_cm_destroy(struct cnic_sock *csk)
2799 {
2800         if (!cnic_in_use(csk))
2801                 return -EINVAL;
2802
2803         csk_hold(csk);
2804         clear_bit(SK_F_INUSE, &csk->flags);
2805         smp_mb__after_clear_bit();
2806         while (atomic_read(&csk->ref_count) != 1)
2807                 msleep(1);
2808         cnic_cm_cleanup(csk);
2809
2810         csk->flags = 0;
2811         csk_put(csk);
2812         return 0;
2813 }
2814
2815 static inline u16 cnic_get_vlan(struct net_device *dev,
2816                                 struct net_device **vlan_dev)
2817 {
2818         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2819                 *vlan_dev = vlan_dev_real_dev(dev);
2820                 return vlan_dev_vlan_id(dev);
2821         }
2822         *vlan_dev = dev;
2823         return 0;
2824 }
2825
2826 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
2827                              struct dst_entry **dst)
2828 {
2829 #if defined(CONFIG_INET)
2830         struct flowi fl;
2831         int err;
2832         struct rtable *rt;
2833
2834         memset(&fl, 0, sizeof(fl));
2835         fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
2836
2837         err = ip_route_output_key(&init_net, &rt, &fl);
2838         if (!err)
2839                 *dst = &rt->dst;
2840         return err;
2841 #else
2842         return -ENETUNREACH;
2843 #endif
2844 }
2845
2846 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
2847                              struct dst_entry **dst)
2848 {
2849 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2850         struct flowi fl;
2851
2852         memset(&fl, 0, sizeof(fl));
2853         ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
2854         if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
2855                 fl.oif = dst_addr->sin6_scope_id;
2856
2857         *dst = ip6_route_output(&init_net, NULL, &fl);
2858         if (*dst)
2859                 return 0;
2860 #endif
2861
2862         return -ENETUNREACH;
2863 }
2864
2865 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
2866                                            int ulp_type)
2867 {
2868         struct cnic_dev *dev = NULL;
2869         struct dst_entry *dst;
2870         struct net_device *netdev = NULL;
2871         int err = -ENETUNREACH;
2872
2873         if (dst_addr->sin_family == AF_INET)
2874                 err = cnic_get_v4_route(dst_addr, &dst);
2875         else if (dst_addr->sin_family == AF_INET6) {
2876                 struct sockaddr_in6 *dst_addr6 =
2877                         (struct sockaddr_in6 *) dst_addr;
2878
2879                 err = cnic_get_v6_route(dst_addr6, &dst);
2880         } else
2881                 return NULL;
2882
2883         if (err)
2884                 return NULL;
2885
2886         if (!dst->dev)
2887                 goto done;
2888
2889         cnic_get_vlan(dst->dev, &netdev);
2890
2891         dev = cnic_from_netdev(netdev);
2892
2893 done:
2894         dst_release(dst);
2895         if (dev)
2896                 cnic_put(dev);
2897         return dev;
2898 }
2899
2900 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2901 {
2902         struct cnic_dev *dev = csk->dev;
2903         struct cnic_local *cp = dev->cnic_priv;
2904
2905         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
2906 }
2907
2908 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2909 {
2910         struct cnic_dev *dev = csk->dev;
2911         struct cnic_local *cp = dev->cnic_priv;
2912         int is_v6, rc = 0;
2913         struct dst_entry *dst = NULL;
2914         struct net_device *realdev;
2915         u32 local_port;
2916
2917         if (saddr->local.v6.sin6_family == AF_INET6 &&
2918             saddr->remote.v6.sin6_family == AF_INET6)
2919                 is_v6 = 1;
2920         else if (saddr->local.v4.sin_family == AF_INET &&
2921                  saddr->remote.v4.sin_family == AF_INET)
2922                 is_v6 = 0;
2923         else
2924                 return -EINVAL;
2925
2926         clear_bit(SK_F_IPV6, &csk->flags);
2927
2928         if (is_v6) {
2929                 set_bit(SK_F_IPV6, &csk->flags);
2930                 cnic_get_v6_route(&saddr->remote.v6, &dst);
2931
2932                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
2933                        sizeof(struct in6_addr));
2934                 csk->dst_port = saddr->remote.v6.sin6_port;
2935                 local_port = saddr->local.v6.sin6_port;
2936
2937         } else {
2938                 cnic_get_v4_route(&saddr->remote.v4, &dst);
2939
2940                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
2941                 csk->dst_port = saddr->remote.v4.sin_port;
2942                 local_port = saddr->local.v4.sin_port;
2943         }
2944
2945         csk->vlan_id = 0;
2946         csk->mtu = dev->netdev->mtu;
2947         if (dst && dst->dev) {
2948                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
2949                 if (realdev == dev->netdev) {
2950                         csk->vlan_id = vlan;
2951                         csk->mtu = dst_mtu(dst);
2952                 }
2953         }
2954
2955         if (local_port >= CNIC_LOCAL_PORT_MIN &&
2956             local_port < CNIC_LOCAL_PORT_MAX) {
2957                 if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
2958                         local_port = 0;
2959         } else
2960                 local_port = 0;
2961
2962         if (!local_port) {
2963                 local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
2964                 if (local_port == -1) {
2965                         rc = -ENOMEM;
2966                         goto err_out;
2967                 }
2968         }
2969         csk->src_port = local_port;
2970
2971 err_out:
2972         dst_release(dst);
2973         return rc;
2974 }
2975
2976 static void cnic_init_csk_state(struct cnic_sock *csk)
2977 {
2978         csk->state = 0;
2979         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
2980         clear_bit(SK_F_CLOSING, &csk->flags);
2981 }
2982
2983 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2984 {
2985         int err = 0;
2986
2987         if (!cnic_in_use(csk))
2988                 return -EINVAL;
2989
2990         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
2991                 return -EINVAL;
2992
2993         cnic_init_csk_state(csk);
2994
2995         err = cnic_get_route(csk, saddr);
2996         if (err)
2997                 goto err_out;
2998
2999         err = cnic_resolve_addr(csk, saddr);
3000         if (!err)
3001                 return 0;
3002
3003 err_out:
3004         clear_bit(SK_F_CONNECT_START, &csk->flags);
3005         return err;
3006 }
3007
3008 static int cnic_cm_abort(struct cnic_sock *csk)
3009 {
3010         struct cnic_local *cp = csk->dev->cnic_priv;
3011         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3012
3013         if (!cnic_in_use(csk))
3014                 return -EINVAL;
3015
3016         if (cnic_abort_prep(csk))
3017                 return cnic_cm_abort_req(csk);
3018
3019         /* Getting here means that we haven't started connect, or
3020          * connect was not successful.
3021          */
3022
3023         cp->close_conn(csk, opcode);
3024         if (csk->state != opcode)
3025                 return -EALREADY;
3026
3027         return 0;
3028 }
3029
3030 static int cnic_cm_close(struct cnic_sock *csk)
3031 {
3032         if (!cnic_in_use(csk))
3033                 return -EINVAL;
3034
3035         if (cnic_close_prep(csk)) {
3036                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3037                 return cnic_cm_close_req(csk);
3038         } else {
3039                 return -EALREADY;
3040         }
3041         return 0;
3042 }
3043
3044 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3045                            u8 opcode)
3046 {
3047         struct cnic_ulp_ops *ulp_ops;
3048         int ulp_type = csk->ulp_type;
3049
3050         rcu_read_lock();
3051         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3052         if (ulp_ops) {
3053                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3054                         ulp_ops->cm_connect_complete(csk);
3055                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3056                         ulp_ops->cm_close_complete(csk);
3057                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3058                         ulp_ops->cm_remote_abort(csk);
3059                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3060                         ulp_ops->cm_abort_complete(csk);
3061                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3062                         ulp_ops->cm_remote_close(csk);
3063         }
3064         rcu_read_unlock();
3065 }
3066
3067 static int cnic_cm_set_pg(struct cnic_sock *csk)
3068 {
3069         if (cnic_offld_prep(csk)) {
3070                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3071                         cnic_cm_update_pg(csk);
3072                 else
3073                         cnic_cm_offload_pg(csk);
3074         }
3075         return 0;
3076 }
3077
3078 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3079 {
3080         struct cnic_local *cp = dev->cnic_priv;
3081         u32 l5_cid = kcqe->pg_host_opaque;
3082         u8 opcode = kcqe->op_code;
3083         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3084
3085         csk_hold(csk);
3086         if (!cnic_in_use(csk))
3087                 goto done;
3088
3089         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3090                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3091                 goto done;
3092         }
3093         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3094         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3095                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3096                 cnic_cm_upcall(cp, csk,
3097                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3098                 goto done;
3099         }
3100
3101         csk->pg_cid = kcqe->pg_cid;
3102         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3103         cnic_cm_conn_req(csk);
3104
3105 done:
3106         csk_put(csk);
3107 }
3108
3109 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3110 {
3111         struct cnic_local *cp = dev->cnic_priv;
3112         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3113         u8 opcode = l4kcqe->op_code;
3114         u32 l5_cid;
3115         struct cnic_sock *csk;
3116
3117         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3118             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3119                 cnic_cm_process_offld_pg(dev, l4kcqe);
3120                 return;
3121         }
3122
3123         l5_cid = l4kcqe->conn_id;
3124         if (opcode & 0x80)
3125                 l5_cid = l4kcqe->cid;
3126         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3127                 return;
3128
3129         csk = &cp->csk_tbl[l5_cid];
3130         csk_hold(csk);
3131
3132         if (!cnic_in_use(csk)) {
3133                 csk_put(csk);
3134                 return;
3135         }
3136
3137         switch (opcode) {
3138         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3139                 if (l4kcqe->status != 0) {
3140                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3141                         cnic_cm_upcall(cp, csk,
3142                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3143                 }
3144                 break;
3145         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3146                 if (l4kcqe->status == 0)
3147                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3148
3149                 smp_mb__before_clear_bit();
3150                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3151                 cnic_cm_upcall(cp, csk, opcode);
3152                 break;
3153
3154         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3155         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3156         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3157         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3158         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3159                 cp->close_conn(csk, opcode);
3160                 break;
3161
3162         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3163                 cnic_cm_upcall(cp, csk, opcode);
3164                 break;
3165         }
3166         csk_put(csk);
3167 }
3168
3169 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3170 {
3171         struct cnic_dev *dev = data;
3172         int i;
3173
3174         for (i = 0; i < num; i++)
3175                 cnic_cm_process_kcqe(dev, kcqe[i]);
3176 }
3177
3178 static struct cnic_ulp_ops cm_ulp_ops = {
3179         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3180 };
3181
3182 static void cnic_cm_free_mem(struct cnic_dev *dev)
3183 {
3184         struct cnic_local *cp = dev->cnic_priv;
3185
3186         kfree(cp->csk_tbl);
3187         cp->csk_tbl = NULL;
3188         cnic_free_id_tbl(&cp->csk_port_tbl);
3189 }
3190
3191 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3192 {
3193         struct cnic_local *cp = dev->cnic_priv;
3194
3195         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3196                               GFP_KERNEL);
3197         if (!cp->csk_tbl)
3198                 return -ENOMEM;
3199
3200         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3201                              CNIC_LOCAL_PORT_MIN)) {
3202                 cnic_cm_free_mem(dev);
3203                 return -ENOMEM;
3204         }
3205         return 0;
3206 }
3207
3208 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3209 {
3210         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
3211                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
3212                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
3213                 csk->state = opcode;
3214         }
3215
3216         /* 1. If event opcode matches the expected event in csk->state
3217          * 2. If the expected event is CLOSE_COMP, we accept any event
3218          * 3. If the expected event is 0, meaning the connection was never
3219          *    never established, we accept the opcode from cm_abort.
3220          */
3221         if (opcode == csk->state || csk->state == 0 ||
3222             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) {
3223                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
3224                         if (csk->state == 0)
3225                                 csk->state = opcode;
3226                         return 1;
3227                 }
3228         }
3229         return 0;
3230 }
3231
3232 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3233 {
3234         struct cnic_dev *dev = csk->dev;
3235         struct cnic_local *cp = dev->cnic_priv;
3236
3237         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
3238                 cnic_cm_upcall(cp, csk, opcode);
3239                 return;
3240         }
3241
3242         clear_bit(SK_F_CONNECT_START, &csk->flags);
3243         cnic_close_conn(csk);
3244         csk->state = opcode;
3245         cnic_cm_upcall(cp, csk, opcode);
3246 }
3247
3248 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3249 {
3250 }
3251
3252 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3253 {
3254         u32 seed;
3255
3256         get_random_bytes(&seed, 4);
3257         cnic_ctx_wr(dev, 45, 0, seed);
3258         return 0;
3259 }
3260
3261 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3262 {
3263         struct cnic_dev *dev = csk->dev;
3264         struct cnic_local *cp = dev->cnic_priv;
3265         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3266         union l5cm_specific_data l5_data;
3267         u32 cmd = 0;
3268         int close_complete = 0;
3269
3270         switch (opcode) {
3271         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3272         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3273         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3274                 if (cnic_ready_to_close(csk, opcode)) {
3275                         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3276                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3277                         else
3278                                 close_complete = 1;
3279                 }
3280                 break;
3281         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3282                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3283                 break;
3284         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3285                 close_complete = 1;
3286                 break;
3287         }
3288         if (cmd) {
3289                 memset(&l5_data, 0, sizeof(l5_data));
3290
3291                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3292                                     &l5_data);
3293         } else if (close_complete) {
3294                 ctx->timestamp = jiffies;
3295                 cnic_close_conn(csk);
3296                 cnic_cm_upcall(cp, csk, csk->state);
3297         }
3298 }
3299
3300 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3301 {
3302 }
3303
3304 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3305 {
3306         struct cnic_local *cp = dev->cnic_priv;
3307         u32 pfid = cp->pfid;
3308         u32 port = CNIC_PORT(cp);
3309
3310         cnic_init_bnx2x_mac(dev);
3311         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3312
3313         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3314                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
3315
3316         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3317                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
3318         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3319                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
3320                 DEF_MAX_DA_COUNT);
3321
3322         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3323                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
3324         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3325                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
3326         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3327                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
3328         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3329                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
3330
3331         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
3332                 DEF_MAX_CWND);
3333         return 0;
3334 }
3335
3336 static int cnic_cm_open(struct cnic_dev *dev)
3337 {
3338         struct cnic_local *cp = dev->cnic_priv;
3339         int err;
3340
3341         err = cnic_cm_alloc_mem(dev);
3342         if (err)
3343                 return err;
3344
3345         err = cp->start_cm(dev);
3346
3347         if (err)
3348                 goto err_out;
3349
3350         dev->cm_create = cnic_cm_create;
3351         dev->cm_destroy = cnic_cm_destroy;
3352         dev->cm_connect = cnic_cm_connect;
3353         dev->cm_abort = cnic_cm_abort;
3354         dev->cm_close = cnic_cm_close;
3355         dev->cm_select_dev = cnic_cm_select_dev;
3356
3357         cp->ulp_handle[CNIC_ULP_L4] = dev;
3358         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
3359         return 0;
3360
3361 err_out:
3362         cnic_cm_free_mem(dev);
3363         return err;
3364 }
3365
3366 static int cnic_cm_shutdown(struct cnic_dev *dev)
3367 {
3368         struct cnic_local *cp = dev->cnic_priv;
3369         int i;
3370
3371         cp->stop_cm(dev);
3372
3373         if (!cp->csk_tbl)
3374                 return 0;
3375
3376         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
3377                 struct cnic_sock *csk = &cp->csk_tbl[i];
3378
3379                 clear_bit(SK_F_INUSE, &csk->flags);
3380                 cnic_cm_cleanup(csk);
3381         }
3382         cnic_cm_free_mem(dev);
3383
3384         return 0;
3385 }
3386
3387 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
3388 {
3389         u32 cid_addr;
3390         int i;
3391
3392         cid_addr = GET_CID_ADDR(cid);
3393
3394         for (i = 0; i < CTX_SIZE; i += 4)
3395                 cnic_ctx_wr(dev, cid_addr, i, 0);
3396 }
3397
3398 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
3399 {
3400         struct cnic_local *cp = dev->cnic_priv;
3401         int ret = 0, i;
3402         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
3403
3404         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3405                 return 0;
3406
3407         for (i = 0; i < cp->ctx_blks; i++) {
3408                 int j;
3409                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
3410                 u32 val;
3411
3412                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
3413
3414                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
3415                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
3416                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
3417                         (u64) cp->ctx_arr[i].mapping >> 32);
3418                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
3419                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
3420                 for (j = 0; j < 10; j++) {
3421
3422                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
3423                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
3424                                 break;
3425                         udelay(5);
3426                 }
3427                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
3428                         ret = -EBUSY;
3429                         break;
3430                 }
3431         }
3432         return ret;
3433 }
3434
3435 static void cnic_free_irq(struct cnic_dev *dev)
3436 {
3437         struct cnic_local *cp = dev->cnic_priv;
3438         struct cnic_eth_dev *ethdev = cp->ethdev;
3439
3440         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3441                 cp->disable_int_sync(dev);
3442                 tasklet_kill(&cp->cnic_irq_task);
3443                 free_irq(ethdev->irq_arr[0].vector, dev);
3444         }
3445 }
3446
3447 static int cnic_request_irq(struct cnic_dev *dev)
3448 {
3449         struct cnic_local *cp = dev->cnic_priv;
3450         struct cnic_eth_dev *ethdev = cp->ethdev;
3451         int err;
3452
3453         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
3454         if (err)
3455                 tasklet_disable(&cp->cnic_irq_task);
3456
3457         return err;
3458 }
3459
3460 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
3461 {
3462         struct cnic_local *cp = dev->cnic_priv;
3463         struct cnic_eth_dev *ethdev = cp->ethdev;
3464
3465         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3466                 int err, i = 0;
3467                 int sblk_num = cp->status_blk_num;
3468                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
3469                            BNX2_HC_SB_CONFIG_1;
3470
3471                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
3472
3473                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
3474                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
3475                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
3476
3477                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
3478                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
3479                              (unsigned long) dev);
3480                 err = cnic_request_irq(dev);
3481                 if (err)
3482                         return err;
3483
3484                 while (cp->status_blk.bnx2->status_completion_producer_index &&
3485                        i < 10) {
3486                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
3487                                 1 << (11 + sblk_num));
3488                         udelay(10);
3489                         i++;
3490                         barrier();
3491                 }
3492                 if (cp->status_blk.bnx2->status_completion_producer_index) {
3493                         cnic_free_irq(dev);
3494                         goto failed;
3495                 }
3496
3497         } else {
3498                 struct status_block *sblk = cp->status_blk.gen;
3499                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
3500                 int i = 0;
3501
3502                 while (sblk->status_completion_producer_index && i < 10) {
3503                         CNIC_WR(dev, BNX2_HC_COMMAND,
3504                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
3505                         udelay(10);
3506                         i++;
3507                         barrier();
3508                 }
3509                 if (sblk->status_completion_producer_index)
3510                         goto failed;
3511
3512         }
3513         return 0;
3514
3515 failed:
3516         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
3517         return -EBUSY;
3518 }
3519
3520 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
3521 {
3522         struct cnic_local *cp = dev->cnic_priv;
3523         struct cnic_eth_dev *ethdev = cp->ethdev;
3524
3525         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3526                 return;
3527
3528         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3529                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3530 }
3531
3532 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
3533 {
3534         struct cnic_local *cp = dev->cnic_priv;
3535         struct cnic_eth_dev *ethdev = cp->ethdev;
3536
3537         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3538                 return;
3539
3540         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3541                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
3542         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
3543         synchronize_irq(ethdev->irq_arr[0].vector);
3544 }
3545
3546 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
3547 {
3548         struct cnic_local *cp = dev->cnic_priv;
3549         struct cnic_eth_dev *ethdev = cp->ethdev;
3550         u32 cid_addr, tx_cid, sb_id;
3551         u32 val, offset0, offset1, offset2, offset3;
3552         int i;
3553         struct tx_bd *txbd;
3554         dma_addr_t buf_map;
3555         struct status_block *s_blk = cp->status_blk.gen;
3556
3557         sb_id = cp->status_blk_num;
3558         tx_cid = 20;
3559         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
3560         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3561                 struct status_block_msix *sblk = cp->status_blk.bnx2;
3562
3563                 tx_cid = TX_TSS_CID + sb_id - 1;
3564                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
3565                         (TX_TSS_CID << 7));
3566                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
3567         }
3568         cp->tx_cons = *cp->tx_cons_ptr;
3569
3570         cid_addr = GET_CID_ADDR(tx_cid);
3571         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
3572                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
3573
3574                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
3575                         cnic_ctx_wr(dev, cid_addr2, i, 0);
3576
3577                 offset0 = BNX2_L2CTX_TYPE_XI;
3578                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
3579                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
3580                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
3581         } else {
3582                 cnic_init_context(dev, tx_cid);
3583                 cnic_init_context(dev, tx_cid + 1);
3584
3585                 offset0 = BNX2_L2CTX_TYPE;
3586                 offset1 = BNX2_L2CTX_CMD_TYPE;
3587                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
3588                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
3589         }
3590         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
3591         cnic_ctx_wr(dev, cid_addr, offset0, val);
3592
3593         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
3594         cnic_ctx_wr(dev, cid_addr, offset1, val);
3595
3596         txbd = (struct tx_bd *) cp->l2_ring;
3597
3598         buf_map = cp->l2_buf_map;
3599         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
3600                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
3601                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3602         }
3603         val = (u64) cp->l2_ring_map >> 32;
3604         cnic_ctx_wr(dev, cid_addr, offset2, val);
3605         txbd->tx_bd_haddr_hi = val;
3606
3607         val = (u64) cp->l2_ring_map & 0xffffffff;
3608         cnic_ctx_wr(dev, cid_addr, offset3, val);
3609         txbd->tx_bd_haddr_lo = val;
3610 }
3611
3612 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
3613 {
3614         struct cnic_local *cp = dev->cnic_priv;
3615         struct cnic_eth_dev *ethdev = cp->ethdev;
3616         u32 cid_addr, sb_id, val, coal_reg, coal_val;
3617         int i;
3618         struct rx_bd *rxbd;
3619         struct status_block *s_blk = cp->status_blk.gen;
3620
3621         sb_id = cp->status_blk_num;
3622         cnic_init_context(dev, 2);
3623         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
3624         coal_reg = BNX2_HC_COMMAND;
3625         coal_val = CNIC_RD(dev, coal_reg);
3626         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3627                 struct status_block_msix *sblk = cp->status_blk.bnx2;
3628
3629                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
3630                 coal_reg = BNX2_HC_COALESCE_NOW;
3631                 coal_val = 1 << (11 + sb_id);
3632         }
3633         i = 0;
3634         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
3635                 CNIC_WR(dev, coal_reg, coal_val);
3636                 udelay(10);
3637                 i++;
3638                 barrier();
3639         }
3640         cp->rx_cons = *cp->rx_cons_ptr;
3641
3642         cid_addr = GET_CID_ADDR(2);
3643         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
3644               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
3645         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
3646
3647         if (sb_id == 0)
3648                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
3649         else
3650                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
3651         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
3652
3653         rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE);
3654         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
3655                 dma_addr_t buf_map;
3656                 int n = (i % cp->l2_rx_ring_size) + 1;
3657
3658                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3659                 rxbd->rx_bd_len = cp->l2_single_buf_size;
3660                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
3661                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
3662                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3663         }
3664         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3665         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
3666         rxbd->rx_bd_haddr_hi = val;
3667
3668         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3669         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
3670         rxbd->rx_bd_haddr_lo = val;
3671
3672         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
3673         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
3674 }
3675
3676 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
3677 {
3678         struct kwqe *wqes[1], l2kwqe;
3679
3680         memset(&l2kwqe, 0, sizeof(l2kwqe));
3681         wqes[0] = &l2kwqe;
3682         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) |
3683                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
3684                                KWQE_OPCODE_SHIFT) | 2;
3685         dev->submit_kwqes(dev, wqes, 1);
3686 }
3687
3688 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
3689 {
3690         struct cnic_local *cp = dev->cnic_priv;
3691         u32 val;
3692
3693         val = cp->func << 2;
3694
3695         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
3696
3697         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3698                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
3699         dev->mac_addr[0] = (u8) (val >> 8);
3700         dev->mac_addr[1] = (u8) val;
3701
3702         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
3703
3704         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3705                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
3706         dev->mac_addr[2] = (u8) (val >> 24);
3707         dev->mac_addr[3] = (u8) (val >> 16);
3708         dev->mac_addr[4] = (u8) (val >> 8);
3709         dev->mac_addr[5] = (u8) val;
3710
3711         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
3712
3713         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
3714         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3715                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
3716
3717         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
3718         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
3719         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
3720 }
3721
3722 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
3723 {
3724         struct cnic_local *cp = dev->cnic_priv;
3725         struct cnic_eth_dev *ethdev = cp->ethdev;
3726         struct status_block *sblk = cp->status_blk.gen;
3727         u32 val, kcq_cid_addr, kwq_cid_addr;
3728         int err;
3729
3730         cnic_set_bnx2_mac(dev);
3731
3732         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
3733         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
3734         if (BCM_PAGE_BITS > 12)
3735                 val |= (12 - 8)  << 4;
3736         else
3737                 val |= (BCM_PAGE_BITS - 8)  << 4;
3738
3739         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
3740
3741         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
3742         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
3743         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
3744
3745         err = cnic_setup_5709_context(dev, 1);
3746         if (err)
3747                 return err;
3748
3749         cnic_init_context(dev, KWQ_CID);
3750         cnic_init_context(dev, KCQ_CID);
3751
3752         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
3753         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
3754
3755         cp->max_kwq_idx = MAX_KWQ_IDX;
3756         cp->kwq_prod_idx = 0;
3757         cp->kwq_con_idx = 0;
3758         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
3759
3760         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
3761                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
3762         else
3763                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
3764
3765         /* Initialize the kernel work queue context. */
3766         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3767               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3768         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
3769
3770         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
3771         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3772
3773         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
3774         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3775
3776         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
3777         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3778
3779         val = (u32) cp->kwq_info.pgtbl_map;
3780         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3781
3782         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
3783         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
3784
3785         cp->kcq1.sw_prod_idx = 0;
3786         cp->kcq1.hw_prod_idx_ptr =
3787                 (u16 *) &sblk->status_completion_producer_index;
3788
3789         cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
3790
3791         /* Initialize the kernel complete queue context. */
3792         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3793               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3794         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
3795
3796         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
3797         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3798
3799         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
3800         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3801
3802         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
3803         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3804
3805         val = (u32) cp->kcq1.dma.pgtbl_map;
3806         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3807
3808         cp->int_num = 0;
3809         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3810                 struct status_block_msix *msblk = cp->status_blk.bnx2;
3811                 u32 sb_id = cp->status_blk_num;
3812                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
3813
3814                 cp->kcq1.hw_prod_idx_ptr =
3815                         (u16 *) &msblk->status_completion_producer_index;
3816                 cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
3817                 cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
3818                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
3819                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3820                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3821         }
3822
3823         /* Enable Commnad Scheduler notification when we write to the
3824          * host producer index of the kernel contexts. */
3825         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
3826
3827         /* Enable Command Scheduler notification when we write to either
3828          * the Send Queue or Receive Queue producer indexes of the kernel
3829          * bypass contexts. */
3830         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
3831         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
3832
3833         /* Notify COM when the driver post an application buffer. */
3834         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
3835
3836         /* Set the CP and COM doorbells.  These two processors polls the
3837          * doorbell for a non zero value before running.  This must be done
3838          * after setting up the kernel queue contexts. */
3839         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
3840         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
3841
3842         cnic_init_bnx2_tx_ring(dev);
3843         cnic_init_bnx2_rx_ring(dev);
3844
3845         err = cnic_init_bnx2_irq(dev);
3846         if (err) {
3847                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
3848                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
3849                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
3850                 return err;
3851         }
3852
3853         return 0;
3854 }
3855
3856 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
3857 {
3858         struct cnic_local *cp = dev->cnic_priv;
3859         struct cnic_eth_dev *ethdev = cp->ethdev;
3860         u32 start_offset = ethdev->ctx_tbl_offset;
3861         int i;
3862
3863         for (i = 0; i < cp->ctx_blks; i++) {
3864                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
3865                 dma_addr_t map = ctx->mapping;
3866
3867                 if (cp->ctx_align) {
3868                         unsigned long mask = cp->ctx_align - 1;
3869
3870                         map = (map + mask) & ~mask;
3871                 }
3872
3873                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
3874         }
3875 }
3876
3877 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
3878 {
3879         struct cnic_local *cp = dev->cnic_priv;
3880         struct cnic_eth_dev *ethdev = cp->ethdev;
3881         int err = 0;
3882
3883         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
3884                      (unsigned long) dev);
3885         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
3886                 err = cnic_request_irq(dev);
3887
3888         return err;
3889 }
3890
3891 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
3892                                                 u16 sb_id, u8 sb_index,
3893                                                 u8 disable)
3894 {
3895
3896         u32 addr = BAR_CSTRORM_INTMEM +
3897                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
3898                         offsetof(struct hc_status_block_data_e1x, index_data) +
3899                         sizeof(struct hc_index_data)*sb_index +
3900                         offsetof(struct hc_index_data, flags);
3901         u16 flags = CNIC_RD16(dev, addr);
3902         /* clear and set */
3903         flags &= ~HC_INDEX_DATA_HC_ENABLED;
3904         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
3905                   HC_INDEX_DATA_HC_ENABLED);
3906         CNIC_WR16(dev, addr, flags);
3907 }
3908
3909 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
3910 {
3911         struct cnic_local *cp = dev->cnic_priv;
3912         u8 sb_id = cp->status_blk_num;
3913
3914         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
3915                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
3916                         offsetof(struct hc_status_block_data_e1x, index_data) +
3917                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
3918                         offsetof(struct hc_index_data, timeout), 64 / 12);
3919         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
3920 }
3921
3922 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
3923 {
3924 }
3925
3926 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
3927                                     struct client_init_ramrod_data *data)
3928 {
3929         struct cnic_local *cp = dev->cnic_priv;
3930         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) cp->l2_ring;
3931         dma_addr_t buf_map, ring_map = cp->l2_ring_map;
3932         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
3933         int port = CNIC_PORT(cp);
3934         int i;
3935         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3936         u32 val;
3937
3938         memset(txbd, 0, BCM_PAGE_SIZE);
3939
3940         buf_map = cp->l2_buf_map;
3941         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
3942                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
3943                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
3944
3945                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3946                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3947                 reg_bd->addr_hi = start_bd->addr_hi;
3948                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
3949                 start_bd->nbytes = cpu_to_le16(0x10);
3950                 start_bd->nbd = cpu_to_le16(3);
3951                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
3952                 start_bd->general_data = (UNICAST_ADDRESS <<
3953                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
3954                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
3955
3956         }
3957
3958         val = (u64) ring_map >> 32;
3959         txbd->next_bd.addr_hi = cpu_to_le32(val);
3960
3961         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
3962
3963         val = (u64) ring_map & 0xffffffff;
3964         txbd->next_bd.addr_lo = cpu_to_le32(val);
3965
3966         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
3967
3968         /* Other ramrod params */
3969         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
3970         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
3971
3972         /* reset xstorm per client statistics */
3973         if (cli < MAX_STAT_COUNTER_ID) {
3974                 val = BAR_XSTRORM_INTMEM +
3975                       XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3976                 for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
3977                         CNIC_WR(dev, val + i * 4, 0);
3978         }
3979
3980         cp->tx_cons_ptr =
3981                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
3982 }
3983
3984 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
3985                                     struct client_init_ramrod_data *data)
3986 {
3987         struct cnic_local *cp = dev->cnic_priv;
3988         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (cp->l2_ring +
3989                                 BCM_PAGE_SIZE);
3990         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
3991                                 (cp->l2_ring + (2 * BCM_PAGE_SIZE));
3992         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
3993         int i;
3994         int port = CNIC_PORT(cp);
3995         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3996         int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
3997         u32 val;
3998         dma_addr_t ring_map = cp->l2_ring_map;
3999
4000         /* General data */
4001         data->general.client_id = cli;
4002         data->general.statistics_en_flg = 1;
4003         data->general.statistics_counter_id = cli;
4004         data->general.activate_flg = 1;
4005         data->general.sp_client_id = cli;
4006
4007         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4008                 dma_addr_t buf_map;
4009                 int n = (i % cp->l2_rx_ring_size) + 1;
4010
4011                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
4012                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4013                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4014         }
4015
4016         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4017         rxbd->addr_hi = cpu_to_le32(val);
4018         data->rx.bd_page_base.hi = cpu_to_le32(val);
4019
4020         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4021         rxbd->addr_lo = cpu_to_le32(val);
4022         data->rx.bd_page_base.lo = cpu_to_le32(val);
4023
4024         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4025         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4026         rxcqe->addr_hi = cpu_to_le32(val);
4027         data->rx.cqe_page_base.hi = cpu_to_le32(val);
4028
4029         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4030         rxcqe->addr_lo = cpu_to_le32(val);
4031         data->rx.cqe_page_base.lo = cpu_to_le32(val);
4032
4033         /* Other ramrod params */
4034         data->rx.client_qzone_id = cl_qzone_id;
4035         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
4036         data->rx.status_block_id = BNX2X_DEF_SB_ID;
4037
4038         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4039         data->rx.bd_buff_size = cpu_to_le16(cp->l2_single_buf_size);
4040
4041         data->rx.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4042         data->rx.outer_vlan_removal_enable_flg = 1;
4043
4044         /* reset tstorm and ustorm per client statistics */
4045         if (cli < MAX_STAT_COUNTER_ID) {
4046                 val = BAR_TSTRORM_INTMEM +
4047                       TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4048                 for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
4049                         CNIC_WR(dev, val + i * 4, 0);
4050
4051                 val = BAR_USTRORM_INTMEM +
4052                       USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4053                 for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
4054                         CNIC_WR(dev, val + i * 4, 0);
4055         }
4056
4057         cp->rx_cons_ptr =
4058                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4059 }
4060
4061 static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
4062 {
4063         struct cnic_local *cp = dev->cnic_priv;
4064         u32 base, addr, val;
4065         int port = CNIC_PORT(cp);
4066
4067         dev->max_iscsi_conn = 0;
4068         base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
4069         if (base == 0)
4070                 return;
4071
4072         addr = BNX2X_SHMEM_ADDR(base,
4073                 dev_info.port_hw_config[port].iscsi_mac_upper);
4074
4075         val = CNIC_RD(dev, addr);
4076
4077         dev->mac_addr[0] = (u8) (val >> 8);
4078         dev->mac_addr[1] = (u8) val;
4079
4080         addr = BNX2X_SHMEM_ADDR(base,
4081                 dev_info.port_hw_config[port].iscsi_mac_lower);
4082
4083         val = CNIC_RD(dev, addr);
4084
4085         dev->mac_addr[2] = (u8) (val >> 24);
4086         dev->mac_addr[3] = (u8) (val >> 16);
4087         dev->mac_addr[4] = (u8) (val >> 8);
4088         dev->mac_addr[5] = (u8) val;
4089
4090         addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
4091         val = CNIC_RD(dev, addr);
4092
4093         if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
4094                 u16 val16;
4095
4096                 addr = BNX2X_SHMEM_ADDR(base,
4097                                 drv_lic_key[port].max_iscsi_init_conn);
4098                 val16 = CNIC_RD16(dev, addr);
4099
4100                 if (val16)
4101                         val16 ^= 0x1e1e;
4102                 dev->max_iscsi_conn = val16;
4103         }
4104         if (BNX2X_CHIP_IS_E1H(cp->chip_id)) {
4105                 int func = CNIC_FUNC(cp);
4106                 u32 mf_cfg_addr;
4107
4108                 mf_cfg_addr = base + BNX2X_SHMEM_MF_BLK_OFFSET;
4109
4110                 addr = mf_cfg_addr +
4111                         offsetof(struct mf_cfg, func_mf_config[func].e1hov_tag);
4112
4113                 val = CNIC_RD(dev, addr);
4114                 val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
4115                 if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
4116                         addr = mf_cfg_addr +
4117                                 offsetof(struct mf_cfg,
4118                                          func_mf_config[func].config);
4119                         val = CNIC_RD(dev, addr);
4120                         val &= FUNC_MF_CFG_PROTOCOL_MASK;
4121                         if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
4122                                 dev->max_iscsi_conn = 0;
4123                 }
4124         }
4125 }
4126
4127 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4128 {
4129         struct cnic_local *cp = dev->cnic_priv;
4130         struct cnic_eth_dev *ethdev = cp->ethdev;
4131         int func = CNIC_FUNC(cp), ret, i;
4132         u32 pfid;
4133         struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
4134
4135         cp->pfid = func;
4136         pfid = cp->pfid;
4137
4138         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4139                                cp->iscsi_start_cid);
4140
4141         if (ret)
4142                 return -ENOMEM;
4143
4144         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
4145
4146         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4147                           CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4148         cp->kcq1.sw_prod_idx = 0;
4149
4150         cp->kcq1.hw_prod_idx_ptr =
4151                 &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4152         cp->kcq1.status_idx_ptr =
4153                 &sb->sb.running_index[SM_RX_ID];
4154
4155         cnic_get_bnx2x_iscsi_info(dev);
4156
4157         /* Only 1 EQ */
4158         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
4159         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4160                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
4161         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4162                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
4163                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
4164         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4165                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
4166                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
4167         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4168                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
4169                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
4170         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4171                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
4172                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
4173         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4174                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
4175         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4176                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
4177         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4178                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
4179                 HC_INDEX_ISCSI_EQ_CONS);
4180
4181         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4182                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4183                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i),
4184                         cp->conn_buf_info.pgtbl[2 * i]);
4185                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4186                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i) + 4,
4187                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4188         }
4189
4190         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4191                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
4192                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4193         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4194                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
4195                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4196
4197         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4198                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
4199
4200         cnic_setup_bnx2x_context(dev);
4201
4202         ret = cnic_init_bnx2x_irq(dev);
4203         if (ret)
4204                 return ret;
4205
4206         return 0;
4207 }
4208
4209 static void cnic_init_rings(struct cnic_dev *dev)
4210 {
4211         struct cnic_local *cp = dev->cnic_priv;
4212
4213         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4214                 return;
4215
4216         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4217                 cnic_init_bnx2_tx_ring(dev);
4218                 cnic_init_bnx2_rx_ring(dev);
4219                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4220         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4221                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4222                 u32 cl_qzone_id, type;
4223                 struct client_init_ramrod_data *data;
4224                 union l5cm_specific_data l5_data;
4225                 struct ustorm_eth_rx_producers rx_prods = {0};
4226                 u32 off, i;
4227
4228                 rx_prods.bd_prod = 0;
4229                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4230                 barrier();
4231
4232                 cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4233
4234                 off = BAR_USTRORM_INTMEM +
4235                          USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli);
4236
4237                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4238                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4239
4240                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4241
4242                 data = cp->l2_buf;
4243
4244                 memset(data, 0, sizeof(*data));
4245
4246                 cnic_init_bnx2x_tx_ring(dev, data);
4247                 cnic_init_bnx2x_rx_ring(dev, data);
4248
4249                 l5_data.phy_address.lo = cp->l2_buf_map & 0xffffffff;
4250                 l5_data.phy_address.hi = (u64) cp->l2_buf_map >> 32;
4251
4252                 type = (ETH_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
4253                         & SPE_HDR_CONN_TYPE;
4254                 type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
4255                         SPE_HDR_FUNCTION_ID);
4256
4257                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4258
4259                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4260                         BNX2X_ISCSI_L2_CID, type, &l5_data);
4261
4262                 i = 0;
4263                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4264                        ++i < 10)
4265                         msleep(1);
4266
4267                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4268                         netdev_err(dev->netdev,
4269                                 "iSCSI CLIENT_SETUP did not complete\n");
4270                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4271                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
4272         }
4273 }
4274
4275 static void cnic_shutdown_rings(struct cnic_dev *dev)
4276 {
4277         struct cnic_local *cp = dev->cnic_priv;
4278
4279         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4280                 return;
4281
4282         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4283                 cnic_shutdown_bnx2_rx_ring(dev);
4284         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4285                 struct cnic_local *cp = dev->cnic_priv;
4286                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4287                 union l5cm_specific_data l5_data;
4288                 int i;
4289                 u32 type;
4290
4291                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0);
4292
4293                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4294
4295                 l5_data.phy_address.lo = cli;
4296                 l5_data.phy_address.hi = 0;
4297                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4298                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4299                 i = 0;
4300                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4301                        ++i < 10)
4302                         msleep(1);
4303
4304                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4305                         netdev_err(dev->netdev,
4306                                 "iSCSI CLIENT_HALT did not complete\n");
4307                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4308
4309                 memset(&l5_data, 0, sizeof(l5_data));
4310                 type = (NONE_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
4311                         & SPE_HDR_CONN_TYPE;
4312                 type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
4313                          SPE_HDR_FUNCTION_ID);
4314                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
4315                         BNX2X_ISCSI_L2_CID, type, &l5_data);
4316                 msleep(10);
4317         }
4318         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4319 }
4320
4321 static int cnic_register_netdev(struct cnic_dev *dev)
4322 {
4323         struct cnic_local *cp = dev->cnic_priv;
4324         struct cnic_eth_dev *ethdev = cp->ethdev;
4325         int err;
4326
4327         if (!ethdev)
4328                 return -ENODEV;
4329
4330         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
4331                 return 0;
4332
4333         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4334         if (err)
4335                 netdev_err(dev->netdev, "register_cnic failed\n");
4336
4337         return err;
4338 }
4339
4340 static void cnic_unregister_netdev(struct cnic_dev *dev)
4341 {
4342         struct cnic_local *cp = dev->cnic_priv;
4343         struct cnic_eth_dev *ethdev = cp->ethdev;
4344
4345         if (!ethdev)
4346                 return;
4347
4348         ethdev->drv_unregister_cnic(dev->netdev);
4349 }
4350
4351 static int cnic_start_hw(struct cnic_dev *dev)
4352 {
4353         struct cnic_local *cp = dev->cnic_priv;
4354         struct cnic_eth_dev *ethdev = cp->ethdev;
4355         int err;
4356
4357         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
4358                 return -EALREADY;
4359
4360         dev->regview = ethdev->io_base;
4361         cp->chip_id = ethdev->chip_id;
4362         pci_dev_get(dev->pcidev);
4363         cp->func = PCI_FUNC(dev->pcidev->devfn);
4364         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
4365         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
4366
4367         err = cp->alloc_resc(dev);
4368         if (err) {
4369                 netdev_err(dev->netdev, "allocate resource failure\n");
4370                 goto err1;
4371         }
4372
4373         err = cp->start_hw(dev);
4374         if (err)
4375                 goto err1;
4376
4377         err = cnic_cm_open(dev);
4378         if (err)
4379                 goto err1;
4380
4381         set_bit(CNIC_F_CNIC_UP, &dev->flags);
4382
4383         cp->enable_int(dev);
4384
4385         return 0;
4386
4387 err1:
4388         cp->free_resc(dev);
4389         pci_dev_put(dev->pcidev);
4390         return err;
4391 }
4392
4393 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
4394 {
4395         cnic_disable_bnx2_int_sync(dev);
4396
4397         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4398         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4399
4400         cnic_init_context(dev, KWQ_CID);
4401         cnic_init_context(dev, KCQ_CID);
4402
4403         cnic_setup_5709_context(dev, 0);
4404         cnic_free_irq(dev);
4405
4406         cnic_free_resc(dev);
4407 }
4408
4409
4410 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
4411 {
4412         struct cnic_local *cp = dev->cnic_priv;
4413
4414         cnic_free_irq(dev);
4415         *cp->kcq1.hw_prod_idx_ptr = 0;
4416         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4417                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
4418         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
4419         cnic_free_resc(dev);
4420 }
4421
4422 static void cnic_stop_hw(struct cnic_dev *dev)
4423 {
4424         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4425                 struct cnic_local *cp = dev->cnic_priv;
4426                 int i = 0;
4427
4428                 /* Need to wait for the ring shutdown event to complete
4429                  * before clearing the CNIC_UP flag.
4430                  */
4431                 while (cp->uio_dev != -1 && i < 15) {
4432                         msleep(100);
4433                         i++;
4434                 }
4435                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
4436                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
4437                 synchronize_rcu();
4438                 cnic_cm_shutdown(dev);
4439                 cp->stop_hw(dev);
4440                 pci_dev_put(dev->pcidev);
4441         }
4442 }
4443
4444 static void cnic_free_dev(struct cnic_dev *dev)
4445 {
4446         int i = 0;
4447
4448         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
4449                 msleep(100);
4450                 i++;
4451         }
4452         if (atomic_read(&dev->ref_count) != 0)
4453                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
4454
4455         netdev_info(dev->netdev, "Removed CNIC device\n");
4456         dev_put(dev->netdev);
4457         kfree(dev);
4458 }
4459
4460 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
4461                                        struct pci_dev *pdev)
4462 {
4463         struct cnic_dev *cdev;
4464         struct cnic_local *cp;
4465         int alloc_size;
4466
4467         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
4468
4469         cdev = kzalloc(alloc_size , GFP_KERNEL);
4470         if (cdev == NULL) {
4471                 netdev_err(dev, "allocate dev struct failure\n");
4472                 return NULL;
4473         }
4474
4475         cdev->netdev = dev;
4476         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
4477         cdev->register_device = cnic_register_device;
4478         cdev->unregister_device = cnic_unregister_device;
4479         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
4480
4481         cp = cdev->cnic_priv;
4482         cp->dev = cdev;
4483         cp->uio_dev = -1;
4484         cp->l2_single_buf_size = 0x400;
4485         cp->l2_rx_ring_size = 3;
4486
4487         spin_lock_init(&cp->cnic_ulp_lock);
4488
4489         netdev_info(dev, "Added CNIC device\n");
4490
4491         return cdev;
4492 }
4493
4494 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
4495 {
4496         struct pci_dev *pdev;
4497         struct cnic_dev *cdev;
4498         struct cnic_local *cp;
4499         struct cnic_eth_dev *ethdev = NULL;
4500         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4501
4502         probe = symbol_get(bnx2_cnic_probe);
4503         if (probe) {
4504                 ethdev = (*probe)(dev);
4505                 symbol_put(bnx2_cnic_probe);
4506         }
4507         if (!ethdev)
4508                 return NULL;
4509
4510         pdev = ethdev->pdev;
4511         if (!pdev)
4512                 return NULL;
4513
4514         dev_hold(dev);
4515         pci_dev_get(pdev);
4516         if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
4517             pdev->device == PCI_DEVICE_ID_NX2_5709S) {
4518                 u8 rev;
4519
4520                 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
4521                 if (rev < 0x10) {
4522                         pci_dev_put(pdev);
4523                         goto cnic_err;
4524                 }
4525         }
4526         pci_dev_put(pdev);
4527
4528         cdev = cnic_alloc_dev(dev, pdev);
4529         if (cdev == NULL)
4530                 goto cnic_err;
4531
4532         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
4533         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
4534
4535         cp = cdev->cnic_priv;
4536         cp->ethdev = ethdev;
4537         cdev->pcidev = pdev;
4538
4539         cp->cnic_ops = &cnic_bnx2_ops;
4540         cp->start_hw = cnic_start_bnx2_hw;
4541         cp->stop_hw = cnic_stop_bnx2_hw;
4542         cp->setup_pgtbl = cnic_setup_page_tbl;
4543         cp->alloc_resc = cnic_alloc_bnx2_resc;
4544         cp->free_resc = cnic_free_resc;
4545         cp->start_cm = cnic_cm_init_bnx2_hw;
4546         cp->stop_cm = cnic_cm_stop_bnx2_hw;
4547         cp->enable_int = cnic_enable_bnx2_int;
4548         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
4549         cp->close_conn = cnic_close_bnx2_conn;
4550         cp->next_idx = cnic_bnx2_next_idx;
4551         cp->hw_idx = cnic_bnx2_hw_idx;
4552         return cdev;
4553
4554 cnic_err:
4555         dev_put(dev);
4556         return NULL;
4557 }
4558
4559 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
4560 {
4561         struct pci_dev *pdev;
4562         struct cnic_dev *cdev;
4563         struct cnic_local *cp;
4564         struct cnic_eth_dev *ethdev = NULL;
4565         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4566
4567         probe = symbol_get(bnx2x_cnic_probe);
4568         if (probe) {
4569                 ethdev = (*probe)(dev);
4570                 symbol_put(bnx2x_cnic_probe);
4571         }
4572         if (!ethdev)
4573                 return NULL;
4574
4575         pdev = ethdev->pdev;
4576         if (!pdev)
4577                 return NULL;
4578
4579         dev_hold(dev);
4580         cdev = cnic_alloc_dev(dev, pdev);
4581         if (cdev == NULL) {
4582                 dev_put(dev);
4583                 return NULL;
4584         }
4585
4586         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
4587         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
4588
4589         cp = cdev->cnic_priv;
4590         cp->ethdev = ethdev;
4591         cdev->pcidev = pdev;
4592
4593         cp->cnic_ops = &cnic_bnx2x_ops;
4594         cp->start_hw = cnic_start_bnx2x_hw;
4595         cp->stop_hw = cnic_stop_bnx2x_hw;
4596         cp->setup_pgtbl = cnic_setup_page_tbl_le;
4597         cp->alloc_resc = cnic_alloc_bnx2x_resc;
4598         cp->free_resc = cnic_free_resc;
4599         cp->start_cm = cnic_cm_init_bnx2x_hw;
4600         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
4601         cp->enable_int = cnic_enable_bnx2x_int;
4602         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
4603         cp->ack_int = cnic_ack_bnx2x_msix;
4604         cp->close_conn = cnic_close_bnx2x_conn;
4605         cp->next_idx = cnic_bnx2x_next_idx;
4606         cp->hw_idx = cnic_bnx2x_hw_idx;
4607         return cdev;
4608 }
4609
4610 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
4611 {
4612         struct ethtool_drvinfo drvinfo;
4613         struct cnic_dev *cdev = NULL;
4614
4615         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
4616                 memset(&drvinfo, 0, sizeof(drvinfo));
4617                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
4618
4619                 if (!strcmp(drvinfo.driver, "bnx2"))
4620                         cdev = init_bnx2_cnic(dev);
4621                 if (!strcmp(drvinfo.driver, "bnx2x"))
4622                         cdev = init_bnx2x_cnic(dev);
4623                 if (cdev) {
4624                         write_lock(&cnic_dev_lock);
4625                         list_add(&cdev->list, &cnic_dev_list);
4626                         write_unlock(&cnic_dev_lock);
4627                 }
4628         }
4629         return cdev;
4630 }
4631
4632 /**
4633  * netdev event handler
4634  */
4635 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
4636                                                          void *ptr)
4637 {
4638         struct net_device *netdev = ptr;
4639         struct cnic_dev *dev;
4640         int if_type;
4641         int new_dev = 0;
4642
4643         dev = cnic_from_netdev(netdev);
4644
4645         if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
4646                 /* Check for the hot-plug device */
4647                 dev = is_cnic_dev(netdev);
4648                 if (dev) {
4649                         new_dev = 1;
4650                         cnic_hold(dev);
4651                 }
4652         }
4653         if (dev) {
4654                 struct cnic_local *cp = dev->cnic_priv;
4655
4656                 if (new_dev)
4657                         cnic_ulp_init(dev);
4658                 else if (event == NETDEV_UNREGISTER)
4659                         cnic_ulp_exit(dev);
4660
4661                 if (event == NETDEV_UP) {
4662                         if (cnic_register_netdev(dev) != 0) {
4663                                 cnic_put(dev);
4664                                 goto done;
4665                         }
4666                         if (!cnic_start_hw(dev))
4667                                 cnic_ulp_start(dev);
4668                 }
4669
4670                 rcu_read_lock();
4671                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
4672                         struct cnic_ulp_ops *ulp_ops;
4673                         void *ctx;
4674
4675                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
4676                         if (!ulp_ops || !ulp_ops->indicate_netevent)
4677                                 continue;
4678
4679                         ctx = cp->ulp_handle[if_type];
4680
4681                         ulp_ops->indicate_netevent(ctx, event);
4682                 }
4683                 rcu_read_unlock();
4684
4685                 if (event == NETDEV_GOING_DOWN) {
4686                         cnic_ulp_stop(dev);
4687                         cnic_stop_hw(dev);
4688                         cnic_unregister_netdev(dev);
4689                 } else if (event == NETDEV_UNREGISTER) {
4690                         write_lock(&cnic_dev_lock);
4691                         list_del_init(&dev->list);
4692                         write_unlock(&cnic_dev_lock);
4693
4694                         cnic_put(dev);
4695                         cnic_free_dev(dev);
4696                         goto done;
4697                 }
4698                 cnic_put(dev);
4699         }
4700 done:
4701         return NOTIFY_DONE;
4702 }
4703
4704 static struct notifier_block cnic_netdev_notifier = {
4705         .notifier_call = cnic_netdev_event
4706 };
4707
4708 static void cnic_release(void)
4709 {
4710         struct cnic_dev *dev;
4711
4712         while (!list_empty(&cnic_dev_list)) {
4713                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
4714                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4715                         cnic_ulp_stop(dev);
4716                         cnic_stop_hw(dev);
4717                 }
4718
4719                 cnic_ulp_exit(dev);
4720                 cnic_unregister_netdev(dev);
4721                 list_del_init(&dev->list);
4722                 cnic_free_dev(dev);
4723         }
4724 }
4725
4726 static int __init cnic_init(void)
4727 {
4728         int rc = 0;
4729
4730         pr_info("%s", version);
4731
4732         rc = register_netdevice_notifier(&cnic_netdev_notifier);
4733         if (rc) {
4734                 cnic_release();
4735                 return rc;
4736         }
4737
4738         return 0;
4739 }
4740
4741 static void __exit cnic_exit(void)
4742 {
4743         unregister_netdevice_notifier(&cnic_netdev_notifier);
4744         cnic_release();
4745 }
4746
4747 module_init(cnic_init);
4748 module_exit(cnic_exit);