drivers/net/ethernet/broadcom/cnic.c

   1 /* cnic.c: QLogic CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2014 Broadcom Corporation
   4  * Copyright (c) 2014-2015 QLogic Corporation
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation.
   9  *
  10  * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
  11  * Previously modified and maintained by: Michael Chan <mchan@broadcom.com>
  12  * Maintained By: Dept-HSGLinuxNICDev@qlogic.com
  13  */
  14
  15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  16
  17 #include <linux/module.h>
  18
  19 #include <linux/kernel.h>
  20 #include <linux/errno.h>
  21 #include <linux/list.h>
  22 #include <linux/slab.h>
  23 #include <linux/pci.h>
  24 #include <linux/init.h>
  25 #include <linux/netdevice.h>
  26 #include <linux/uio_driver.h>
  27 #include <linux/in.h>
  28 #include <linux/dma-mapping.h>
  29 #include <linux/delay.h>
  30 #include <linux/ethtool.h>
  31 #include <linux/if_vlan.h>
  32 #include <linux/prefetch.h>
  33 #include <linux/random.h>
  34 #if IS_ENABLED(CONFIG_VLAN_8021Q)
  35 #define BCM_VLAN 1
  36 #endif
  37 #include <net/ip.h>
  38 #include <net/tcp.h>
  39 #include <net/route.h>
  40 #include <net/ipv6.h>
  41 #include <net/ip6_route.h>
  42 #include <net/ip6_checksum.h>
  43 #include <scsi/iscsi_if.h>
  44
  45 #define BCM_CNIC        1
  46 #include "cnic_if.h"
  47 #include "bnx2.h"
  48 #include "bnx2x/bnx2x.h"
  49 #include "bnx2x/bnx2x_reg.h"
  50 #include "bnx2x/bnx2x_fw_defs.h"
  51 #include "bnx2x/bnx2x_hsi.h"
  52 #include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
  53 #include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
  54 #include "../../../scsi/bnx2fc/bnx2fc_constants.h"
  55 #include "cnic.h"
  56 #include "cnic_defs.h"
  57
  58 #define CNIC_MODULE_NAME        "cnic"
  59
  60 static char version[] =
  61         "QLogic " CNIC_MODULE_NAME "Driver v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  62
  63 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  64               "Chen (zongxi@broadcom.com");
  65 MODULE_DESCRIPTION("QLogic cnic Driver");
  66 MODULE_LICENSE("GPL");
  67 MODULE_VERSION(CNIC_MODULE_VERSION);
  68
  69 /* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
  70 static LIST_HEAD(cnic_dev_list);
  71 static LIST_HEAD(cnic_udev_list);
  72 static DEFINE_RWLOCK(cnic_dev_lock);
  73 static DEFINE_MUTEX(cnic_lock);
  74
  75 static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  76
  77 /* helper function, assuming cnic_lock is held */
  78 static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
  79 {
  80         return rcu_dereference_protected(cnic_ulp_tbl[type],
  81                                          lockdep_is_held(&cnic_lock));
  82 }
  83
  84 static int cnic_service_bnx2(void *, void *);
  85 static int cnic_service_bnx2x(void *, void *);
  86 static int cnic_ctl(void *, struct cnic_ctl_info *);
  87
  88 static struct cnic_ops cnic_bnx2_ops = {
  89         .cnic_owner     = THIS_MODULE,
  90         .cnic_handler   = cnic_service_bnx2,
  91         .cnic_ctl       = cnic_ctl,
  92 };
  93
  94 static struct cnic_ops cnic_bnx2x_ops = {
  95         .cnic_owner     = THIS_MODULE,
  96         .cnic_handler   = cnic_service_bnx2x,
  97         .cnic_ctl       = cnic_ctl,
  98 };
  99
 100 static struct workqueue_struct *cnic_wq;
 101
 102 static void cnic_shutdown_rings(struct cnic_dev *);
 103 static void cnic_init_rings(struct cnic_dev *);
 104 static int cnic_cm_set_pg(struct cnic_sock *);
 105
 106 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
 107 {
 108         struct cnic_uio_dev *udev = uinfo->priv;
 109         struct cnic_dev *dev;
 110
 111         if (!capable(CAP_NET_ADMIN))
 112                 return -EPERM;
 113
 114         if (udev->uio_dev != -1)
 115                 return -EBUSY;
 116
 117         rtnl_lock();
 118         dev = udev->dev;
 119
 120         if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 121                 rtnl_unlock();
 122                 return -ENODEV;
 123         }
 124
 125         udev->uio_dev = iminor(inode);
 126
 127         cnic_shutdown_rings(dev);
 128         cnic_init_rings(dev);
 129         rtnl_unlock();
 130
 131         return 0;
 132 }
 133
 134 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 135 {
 136         struct cnic_uio_dev *udev = uinfo->priv;
 137
 138         udev->uio_dev = -1;
 139         return 0;
 140 }
 141
 142 static inline void cnic_hold(struct cnic_dev *dev)
 143 {
 144         atomic_inc(&dev->ref_count);
 145 }
 146
 147 static inline void cnic_put(struct cnic_dev *dev)
 148 {
 149         atomic_dec(&dev->ref_count);
 150 }
 151
 152 static inline void csk_hold(struct cnic_sock *csk)
 153 {
 154         atomic_inc(&csk->ref_count);
 155 }
 156
 157 static inline void csk_put(struct cnic_sock *csk)
 158 {
 159         atomic_dec(&csk->ref_count);
 160 }
 161
 162 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 163 {
 164         struct cnic_dev *cdev;
 165
 166         read_lock(&cnic_dev_lock);
 167         list_for_each_entry(cdev, &cnic_dev_list, list) {
 168                 if (netdev == cdev->netdev) {
 169                         cnic_hold(cdev);
 170                         read_unlock(&cnic_dev_lock);
 171                         return cdev;
 172                 }
 173         }
 174         read_unlock(&cnic_dev_lock);
 175         return NULL;
 176 }
 177
 178 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 179 {
 180         atomic_inc(&ulp_ops->ref_count);
 181 }
 182
 183 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 184 {
 185         atomic_dec(&ulp_ops->ref_count);
 186 }
 187
 188 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 189 {
 190         struct cnic_local *cp = dev->cnic_priv;
 191         struct cnic_eth_dev *ethdev = cp->ethdev;
 192         struct drv_ctl_info info;
 193         struct drv_ctl_io *io = &info.data.io;
 194
 195         memset(&info, 0, sizeof(struct drv_ctl_info));
 196         info.cmd = DRV_CTL_CTX_WR_CMD;
 197         io->cid_addr = cid_addr;
 198         io->offset = off;
 199         io->data = val;
 200         ethdev->drv_ctl(dev->netdev, &info);
 201 }
 202
 203 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 204 {
 205         struct cnic_local *cp = dev->cnic_priv;
 206         struct cnic_eth_dev *ethdev = cp->ethdev;
 207         struct drv_ctl_info info;
 208         struct drv_ctl_io *io = &info.data.io;
 209
 210         memset(&info, 0, sizeof(struct drv_ctl_info));
 211         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 212         io->offset = off;
 213         io->dma_addr = addr;
 214         ethdev->drv_ctl(dev->netdev, &info);
 215 }
 216
 217 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 218 {
 219         struct cnic_local *cp = dev->cnic_priv;
 220         struct cnic_eth_dev *ethdev = cp->ethdev;
 221         struct drv_ctl_info info;
 222         struct drv_ctl_l2_ring *ring = &info.data.ring;
 223
 224         memset(&info, 0, sizeof(struct drv_ctl_info));
 225         if (start)
 226                 info.cmd = DRV_CTL_START_L2_CMD;
 227         else
 228                 info.cmd = DRV_CTL_STOP_L2_CMD;
 229
 230         ring->cid = cid;
 231         ring->client_id = cl_id;
 232         ethdev->drv_ctl(dev->netdev, &info);
 233 }
 234
 235 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 236 {
 237         struct cnic_local *cp = dev->cnic_priv;
 238         struct cnic_eth_dev *ethdev = cp->ethdev;
 239         struct drv_ctl_info info;
 240         struct drv_ctl_io *io = &info.data.io;
 241
 242         memset(&info, 0, sizeof(struct drv_ctl_info));
 243         info.cmd = DRV_CTL_IO_WR_CMD;
 244         io->offset = off;
 245         io->data = val;
 246         ethdev->drv_ctl(dev->netdev, &info);
 247 }
 248
 249 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 250 {
 251         struct cnic_local *cp = dev->cnic_priv;
 252         struct cnic_eth_dev *ethdev = cp->ethdev;
 253         struct drv_ctl_info info;
 254         struct drv_ctl_io *io = &info.data.io;
 255
 256         memset(&info, 0, sizeof(struct drv_ctl_info));
 257         info.cmd = DRV_CTL_IO_RD_CMD;
 258         io->offset = off;
 259         ethdev->drv_ctl(dev->netdev, &info);
 260         return io->data;
 261 }
 262
 263 static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg, int state)
 264 {
 265         struct cnic_local *cp = dev->cnic_priv;
 266         struct cnic_eth_dev *ethdev = cp->ethdev;
 267         struct drv_ctl_info info;
 268         struct fcoe_capabilities *fcoe_cap =
 269                 &info.data.register_data.fcoe_features;
 270
 271         memset(&info, 0, sizeof(struct drv_ctl_info));
 272         if (reg) {
 273                 info.cmd = DRV_CTL_ULP_REGISTER_CMD;
 274                 if (ulp_type == CNIC_ULP_FCOE && dev->fcoe_cap)
 275                         memcpy(fcoe_cap, dev->fcoe_cap, sizeof(*fcoe_cap));
 276         } else {
 277                 info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;
 278         }
 279
 280         info.data.ulp_type = ulp_type;
 281         info.drv_state = state;
 282         ethdev->drv_ctl(dev->netdev, &info);
 283 }
 284
 285 static int cnic_in_use(struct cnic_sock *csk)
 286 {
 287         return test_bit(SK_F_INUSE, &csk->flags);
 288 }
 289
 290 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
 291 {
 292         struct cnic_local *cp = dev->cnic_priv;
 293         struct cnic_eth_dev *ethdev = cp->ethdev;
 294         struct drv_ctl_info info;
 295
 296         memset(&info, 0, sizeof(struct drv_ctl_info));
 297         info.cmd = cmd;
 298         info.data.credit.credit_count = count;
 299         ethdev->drv_ctl(dev->netdev, &info);
 300 }
 301
 302 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 303 {
 304         u32 i;
 305
 306         if (!cp->ctx_tbl)
 307                 return -EINVAL;
 308
 309         for (i = 0; i < cp->max_cid_space; i++) {
 310                 if (cp->ctx_tbl[i].cid == cid) {
 311                         *l5_cid = i;
 312                         return 0;
 313                 }
 314         }
 315         return -EINVAL;
 316 }
 317
 318 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 319                            struct cnic_sock *csk)
 320 {
 321         struct iscsi_path path_req;
 322         char *buf = NULL;
 323         u16 len = 0;
 324         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 325         struct cnic_ulp_ops *ulp_ops;
 326         struct cnic_uio_dev *udev = cp->udev;
 327         int rc = 0, retry = 0;
 328
 329         if (!udev || udev->uio_dev == -1)
 330                 return -ENODEV;
 331
 332         if (csk) {
 333                 len = sizeof(path_req);
 334                 buf = (char *) &path_req;
 335                 memset(&path_req, 0, len);
 336
 337                 msg_type = ISCSI_KEVENT_PATH_REQ;
 338                 path_req.handle = (u64) csk->l5_cid;
 339                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 340                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 341                                sizeof(struct in6_addr));
 342                         path_req.ip_addr_len = 16;
 343                 } else {
 344                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 345                                sizeof(struct in_addr));
 346                         path_req.ip_addr_len = 4;
 347                 }
 348                 path_req.vlan_id = csk->vlan_id;
 349                 path_req.pmtu = csk->mtu;
 350         }
 351
 352         while (retry < 3) {
 353                 rc = 0;
 354                 rcu_read_lock();
 355                 ulp_ops = rcu_dereference(cp->ulp_ops[CNIC_ULP_ISCSI]);
 356                 if (ulp_ops)
 357                         rc = ulp_ops->iscsi_nl_send_msg(
 358                                 cp->ulp_handle[CNIC_ULP_ISCSI],
 359                                 msg_type, buf, len);
 360                 rcu_read_unlock();
 361                 if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
 362                         break;
 363
 364                 msleep(100);
 365                 retry++;
 366         }
 367         return rc;
 368 }
 369
 370 static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
 371
 372 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 373                                   char *buf, u16 len)
 374 {
 375         int rc = -EINVAL;
 376
 377         switch (msg_type) {
 378         case ISCSI_UEVENT_PATH_UPDATE: {
 379                 struct cnic_local *cp;
 380                 u32 l5_cid;
 381                 struct cnic_sock *csk;
 382                 struct iscsi_path *path_resp;
 383
 384                 if (len < sizeof(*path_resp))
 385                         break;
 386
 387                 path_resp = (struct iscsi_path *) buf;
 388                 cp = dev->cnic_priv;
 389                 l5_cid = (u32) path_resp->handle;
 390                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 391                         break;
 392
 393                 if (!rcu_access_pointer(cp->ulp_ops[CNIC_ULP_L4])) {
 394                         rc = -ENODEV;
 395                         break;
 396                 }
 397                 csk = &cp->csk_tbl[l5_cid];
 398                 csk_hold(csk);
 399                 if (cnic_in_use(csk) &&
 400                     test_bit(SK_F_CONNECT_START, &csk->flags)) {
 401
 402                         csk->vlan_id = path_resp->vlan_id;
 403
 404                         memcpy(csk->ha, path_resp->mac_addr, ETH_ALEN);
 405                         if (test_bit(SK_F_IPV6, &csk->flags))
 406                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 407                                        sizeof(struct in6_addr));
 408                         else
 409                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 410                                        sizeof(struct in_addr));
 411
 412                         if (is_valid_ether_addr(csk->ha)) {
 413                                 cnic_cm_set_pg(csk);
 414                         } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
 415                                 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 416
 417                                 cnic_cm_upcall(cp, csk,
 418                                         L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
 419                                 clear_bit(SK_F_CONNECT_START, &csk->flags);
 420                         }
 421                 }
 422                 csk_put(csk);
 423                 rc = 0;
 424         }
 425         }
 426
 427         return rc;
 428 }
 429
 430 static int cnic_offld_prep(struct cnic_sock *csk)
 431 {
 432         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 433                 return 0;
 434
 435         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 436                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 437                 return 0;
 438         }
 439
 440         return 1;
 441 }
 442
 443 static int cnic_close_prep(struct cnic_sock *csk)
 444 {
 445         clear_bit(SK_F_CONNECT_START, &csk->flags);
 446         smp_mb__after_atomic();
 447
 448         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 449                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 450                         msleep(1);
 451
 452                 return 1;
 453         }
 454         return 0;
 455 }
 456
 457 static int cnic_abort_prep(struct cnic_sock *csk)
 458 {
 459         clear_bit(SK_F_CONNECT_START, &csk->flags);
 460         smp_mb__after_atomic();
 461
 462         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 463                 msleep(1);
 464
 465         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 466                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 467                 return 1;
 468         }
 469
 470         return 0;
 471 }
 472
 473 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 474 {
 475         struct cnic_dev *dev;
 476
 477         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 478                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 479                 return -EINVAL;
 480         }
 481         mutex_lock(&cnic_lock);
 482         if (cnic_ulp_tbl_prot(ulp_type)) {
 483                 pr_err("%s: Type %d has already been registered\n",
 484                        __func__, ulp_type);
 485                 mutex_unlock(&cnic_lock);
 486                 return -EBUSY;
 487         }
 488
 489         read_lock(&cnic_dev_lock);
 490         list_for_each_entry(dev, &cnic_dev_list, list) {
 491                 struct cnic_local *cp = dev->cnic_priv;
 492
 493                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 494         }
 495         read_unlock(&cnic_dev_lock);
 496
 497         atomic_set(&ulp_ops->ref_count, 0);
 498         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 499         mutex_unlock(&cnic_lock);
 500
 501         /* Prevent race conditions with netdev_event */
 502         rtnl_lock();
 503         list_for_each_entry(dev, &cnic_dev_list, list) {
 504                 struct cnic_local *cp = dev->cnic_priv;
 505
 506                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 507                         ulp_ops->cnic_init(dev);
 508         }
 509         rtnl_unlock();
 510
 511         return 0;
 512 }
 513
 514 int cnic_unregister_driver(int ulp_type)
 515 {
 516         struct cnic_dev *dev;
 517         struct cnic_ulp_ops *ulp_ops;
 518         int i = 0;
 519
 520         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 521                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 522                 return -EINVAL;
 523         }
 524         mutex_lock(&cnic_lock);
 525         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 526         if (!ulp_ops) {
 527                 pr_err("%s: Type %d has not been registered\n",
 528                        __func__, ulp_type);
 529                 goto out_unlock;
 530         }
 531         read_lock(&cnic_dev_lock);
 532         list_for_each_entry(dev, &cnic_dev_list, list) {
 533                 struct cnic_local *cp = dev->cnic_priv;
 534
 535                 if (rcu_access_pointer(cp->ulp_ops[ulp_type])) {
 536                         pr_err("%s: Type %d still has devices registered\n",
 537                                __func__, ulp_type);
 538                         read_unlock(&cnic_dev_lock);
 539                         goto out_unlock;
 540                 }
 541         }
 542         read_unlock(&cnic_dev_lock);
 543
 544         RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);
 545
 546         mutex_unlock(&cnic_lock);
 547         synchronize_rcu();
 548         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 549                 msleep(100);
 550                 i++;
 551         }
 552
 553         if (atomic_read(&ulp_ops->ref_count) != 0)
 554                 pr_warn("%s: Failed waiting for ref count to go to zero\n",
 555                         __func__);
 556         return 0;
 557
 558 out_unlock:
 559         mutex_unlock(&cnic_lock);
 560         return -EINVAL;
 561 }
 562
 563 static int cnic_start_hw(struct cnic_dev *);
 564 static void cnic_stop_hw(struct cnic_dev *);
 565
 566 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 567                                 void *ulp_ctx)
 568 {
 569         struct cnic_local *cp = dev->cnic_priv;
 570         struct cnic_ulp_ops *ulp_ops;
 571
 572         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 573                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 574                 return -EINVAL;
 575         }
 576         mutex_lock(&cnic_lock);
 577         if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
 578                 pr_err("%s: Driver with type %d has not been registered\n",
 579                        __func__, ulp_type);
 580                 mutex_unlock(&cnic_lock);
 581                 return -EAGAIN;
 582         }
 583         if (rcu_access_pointer(cp->ulp_ops[ulp_type])) {
 584                 pr_err("%s: Type %d has already been registered to this device\n",
 585                        __func__, ulp_type);
 586                 mutex_unlock(&cnic_lock);
 587                 return -EBUSY;
 588         }
 589
 590         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 591         cp->ulp_handle[ulp_type] = ulp_ctx;
 592         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 593         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 594         cnic_hold(dev);
 595
 596         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 597                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 598                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 599
 600         mutex_unlock(&cnic_lock);
 601
 602         cnic_ulp_ctl(dev, ulp_type, true, DRV_ACTIVE);
 603
 604         return 0;
 605
 606 }
 607 EXPORT_SYMBOL(cnic_register_driver);
 608
 609 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 610 {
 611         struct cnic_local *cp = dev->cnic_priv;
 612         int i = 0;
 613
 614         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 615                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 616                 return -EINVAL;
 617         }
 618
 619         if (ulp_type == CNIC_ULP_ISCSI)
 620                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 621
 622         mutex_lock(&cnic_lock);
 623         if (rcu_access_pointer(cp->ulp_ops[ulp_type])) {
 624                 RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
 625                 cnic_put(dev);
 626         } else {
 627                 pr_err("%s: device not registered to this ulp type %d\n",
 628                        __func__, ulp_type);
 629                 mutex_unlock(&cnic_lock);
 630                 return -EINVAL;
 631         }
 632         mutex_unlock(&cnic_lock);
 633
 634         if (ulp_type == CNIC_ULP_FCOE)
 635                 dev->fcoe_cap = NULL;
 636
 637         synchronize_rcu();
 638
 639         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 640                i < 20) {
 641                 msleep(100);
 642                 i++;
 643         }
 644         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 645                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 646
 647         if (test_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 648                 cnic_ulp_ctl(dev, ulp_type, false, DRV_UNLOADED);
 649         else
 650                 cnic_ulp_ctl(dev, ulp_type, false, DRV_INACTIVE);
 651
 652         return 0;
 653 }
 654 EXPORT_SYMBOL(cnic_unregister_driver);
 655
 656 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
 657                             u32 next)
 658 {
 659         id_tbl->start = start_id;
 660         id_tbl->max = size;
 661         id_tbl->next = next;
 662         spin_lock_init(&id_tbl->lock);
 663         id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
 664         if (!id_tbl->table)
 665                 return -ENOMEM;
 666
 667         return 0;
 668 }
 669
 670 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 671 {
 672         kfree(id_tbl->table);
 673         id_tbl->table = NULL;
 674 }
 675
 676 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 677 {
 678         int ret = -1;
 679
 680         id -= id_tbl->start;
 681         if (id >= id_tbl->max)
 682                 return ret;
 683
 684         spin_lock(&id_tbl->lock);
 685         if (!test_bit(id, id_tbl->table)) {
 686                 set_bit(id, id_tbl->table);
 687                 ret = 0;
 688         }
 689         spin_unlock(&id_tbl->lock);
 690         return ret;
 691 }
 692
 693 /* Returns -1 if not successful */
 694 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 695 {
 696         u32 id;
 697
 698         spin_lock(&id_tbl->lock);
 699         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 700         if (id >= id_tbl->max) {
 701                 id = -1;
 702                 if (id_tbl->next != 0) {
 703                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 704                         if (id >= id_tbl->next)
 705                                 id = -1;
 706                 }
 707         }
 708
 709         if (id < id_tbl->max) {
 710                 set_bit(id, id_tbl->table);
 711                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 712                 id += id_tbl->start;
 713         }
 714
 715         spin_unlock(&id_tbl->lock);
 716
 717         return id;
 718 }
 719
 720 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 721 {
 722         if (id == -1)
 723                 return;
 724
 725         id -= id_tbl->start;
 726         if (id >= id_tbl->max)
 727                 return;
 728
 729         clear_bit(id, id_tbl->table);
 730 }
 731
 732 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 733 {
 734         int i;
 735
 736         if (!dma->pg_arr)
 737                 return;
 738
 739         for (i = 0; i < dma->num_pages; i++) {
 740                 if (dma->pg_arr[i]) {
 741                         dma_free_coherent(&dev->pcidev->dev, CNIC_PAGE_SIZE,
 742                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 743                         dma->pg_arr[i] = NULL;
 744                 }
 745         }
 746         if (dma->pgtbl) {
 747                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 748                                   dma->pgtbl, dma->pgtbl_map);
 749                 dma->pgtbl = NULL;
 750         }
 751         kfree(dma->pg_arr);
 752         dma->pg_arr = NULL;
 753         dma->num_pages = 0;
 754 }
 755
 756 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 757 {
 758         int i;
 759         __le32 *page_table = (__le32 *) dma->pgtbl;
 760
 761         for (i = 0; i < dma->num_pages; i++) {
 762                 /* Each entry needs to be in big endian format. */
 763                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 764                 page_table++;
 765                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 766                 page_table++;
 767         }
 768 }
 769
 770 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 771 {
 772         int i;
 773         __le32 *page_table = (__le32 *) dma->pgtbl;
 774
 775         for (i = 0; i < dma->num_pages; i++) {
 776                 /* Each entry needs to be in little endian format. */
 777                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 778                 page_table++;
 779                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 780                 page_table++;
 781         }
 782 }
 783
 784 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 785                           int pages, int use_pg_tbl)
 786 {
 787         int i, size;
 788         struct cnic_local *cp = dev->cnic_priv;
 789
 790         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 791         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 792         if (dma->pg_arr == NULL)
 793                 return -ENOMEM;
 794
 795         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 796         dma->num_pages = pages;
 797
 798         for (i = 0; i < pages; i++) {
 799                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 800                                                     CNIC_PAGE_SIZE,
 801                                                     &dma->pg_map_arr[i],
 802                                                     GFP_ATOMIC);
 803                 if (dma->pg_arr[i] == NULL)
 804                         goto error;
 805         }
 806         if (!use_pg_tbl)
 807                 return 0;
 808
 809         dma->pgtbl_size = ((pages * 8) + CNIC_PAGE_SIZE - 1) &
 810                           ~(CNIC_PAGE_SIZE - 1);
 811         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 812                                         &dma->pgtbl_map, GFP_ATOMIC);
 813         if (dma->pgtbl == NULL)
 814                 goto error;
 815
 816         cp->setup_pgtbl(dev, dma);
 817
 818         return 0;
 819
 820 error:
 821         cnic_free_dma(dev, dma);
 822         return -ENOMEM;
 823 }
 824
 825 static void cnic_free_context(struct cnic_dev *dev)
 826 {
 827         struct cnic_local *cp = dev->cnic_priv;
 828         int i;
 829
 830         for (i = 0; i < cp->ctx_blks; i++) {
 831                 if (cp->ctx_arr[i].ctx) {
 832                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 833                                           cp->ctx_arr[i].ctx,
 834                                           cp->ctx_arr[i].mapping);
 835                         cp->ctx_arr[i].ctx = NULL;
 836                 }
 837         }
 838 }
 839
 840 static void __cnic_free_uio_rings(struct cnic_uio_dev *udev)
 841 {
 842         if (udev->l2_buf) {
 843                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 844                                   udev->l2_buf, udev->l2_buf_map);
 845                 udev->l2_buf = NULL;
 846         }
 847
 848         if (udev->l2_ring) {
 849                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 850                                   udev->l2_ring, udev->l2_ring_map);
 851                 udev->l2_ring = NULL;
 852         }
 853
 854 }
 855
 856 static void __cnic_free_uio(struct cnic_uio_dev *udev)
 857 {
 858         uio_unregister_device(&udev->cnic_uinfo);
 859
 860         __cnic_free_uio_rings(udev);
 861
 862         pci_dev_put(udev->pdev);
 863         kfree(udev);
 864 }
 865
 866 static void cnic_free_uio(struct cnic_uio_dev *udev)
 867 {
 868         if (!udev)
 869                 return;
 870
 871         write_lock(&cnic_dev_lock);
 872         list_del_init(&udev->list);
 873         write_unlock(&cnic_dev_lock);
 874         __cnic_free_uio(udev);
 875 }
 876
 877 static void cnic_free_resc(struct cnic_dev *dev)
 878 {
 879         struct cnic_local *cp = dev->cnic_priv;
 880         struct cnic_uio_dev *udev = cp->udev;
 881
 882         if (udev) {
 883                 udev->dev = NULL;
 884                 cp->udev = NULL;
 885                 if (udev->uio_dev == -1)
 886                         __cnic_free_uio_rings(udev);
 887         }
 888
 889         cnic_free_context(dev);
 890         kfree(cp->ctx_arr);
 891         cp->ctx_arr = NULL;
 892         cp->ctx_blks = 0;
 893
 894         cnic_free_dma(dev, &cp->gbl_buf_info);
 895         cnic_free_dma(dev, &cp->kwq_info);
 896         cnic_free_dma(dev, &cp->kwq_16_data_info);
 897         cnic_free_dma(dev, &cp->kcq2.dma);
 898         cnic_free_dma(dev, &cp->kcq1.dma);
 899         kfree(cp->iscsi_tbl);
 900         cp->iscsi_tbl = NULL;
 901         kfree(cp->ctx_tbl);
 902         cp->ctx_tbl = NULL;
 903
 904         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
 905         cnic_free_id_tbl(&cp->cid_tbl);
 906 }
 907
 908 static int cnic_alloc_context(struct cnic_dev *dev)
 909 {
 910         struct cnic_local *cp = dev->cnic_priv;
 911
 912         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
 913                 int i, k, arr_size;
 914
 915                 cp->ctx_blk_size = CNIC_PAGE_SIZE;
 916                 cp->cids_per_blk = CNIC_PAGE_SIZE / 128;
 917                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 918                            sizeof(struct cnic_ctx);
 919                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 920                 if (cp->ctx_arr == NULL)
 921                         return -ENOMEM;
 922
 923                 k = 0;
 924                 for (i = 0; i < 2; i++) {
 925                         u32 j, reg, off, lo, hi;
 926
 927                         if (i == 0)
 928                                 off = BNX2_PG_CTX_MAP;
 929                         else
 930                                 off = BNX2_ISCSI_CTX_MAP;
 931
 932                         reg = cnic_reg_rd_ind(dev, off);
 933                         lo = reg >> 16;
 934                         hi = reg & 0xffff;
 935                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 936                                 cp->ctx_arr[k].cid = j;
 937                 }
 938
 939                 cp->ctx_blks = k;
 940                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 941                         cp->ctx_blks = 0;
 942                         return -ENOMEM;
 943                 }
 944
 945                 for (i = 0; i < cp->ctx_blks; i++) {
 946                         cp->ctx_arr[i].ctx =
 947                                 dma_alloc_coherent(&dev->pcidev->dev,
 948                                                    CNIC_PAGE_SIZE,
 949                                                    &cp->ctx_arr[i].mapping,
 950                                                    GFP_KERNEL);
 951                         if (cp->ctx_arr[i].ctx == NULL)
 952                                 return -ENOMEM;
 953                 }
 954         }
 955         return 0;
 956 }
 957
 958 static u16 cnic_bnx2_next_idx(u16 idx)
 959 {
 960         return idx + 1;
 961 }
 962
 963 static u16 cnic_bnx2_hw_idx(u16 idx)
 964 {
 965         return idx;
 966 }
 967
 968 static u16 cnic_bnx2x_next_idx(u16 idx)
 969 {
 970         idx++;
 971         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 972                 idx++;
 973
 974         return idx;
 975 }
 976
 977 static u16 cnic_bnx2x_hw_idx(u16 idx)
 978 {
 979         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 980                 idx++;
 981         return idx;
 982 }
 983
 984 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
 985                           bool use_pg_tbl)
 986 {
 987         int err, i, use_page_tbl = 0;
 988         struct kcqe **kcq;
 989
 990         if (use_pg_tbl)
 991                 use_page_tbl = 1;
 992
 993         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
 994         if (err)
 995                 return err;
 996
 997         kcq = (struct kcqe **) info->dma.pg_arr;
 998         info->kcq = kcq;
 999
1000         info->next_idx = cnic_bnx2_next_idx;
1001         info->hw_idx = cnic_bnx2_hw_idx;
1002         if (use_pg_tbl)
1003                 return 0;
1004
1005         info->next_idx = cnic_bnx2x_next_idx;
1006         info->hw_idx = cnic_bnx2x_hw_idx;
1007
1008         for (i = 0; i < KCQ_PAGE_CNT; i++) {
1009                 struct bnx2x_bd_chain_next *next =
1010                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
1011                 int j = i + 1;
1012
1013                 if (j >= KCQ_PAGE_CNT)
1014                         j = 0;
1015                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
1016                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
1017         }
1018         return 0;
1019 }
1020
1021 static int __cnic_alloc_uio_rings(struct cnic_uio_dev *udev, int pages)
1022 {
1023         struct cnic_local *cp = udev->dev->cnic_priv;
1024
1025         if (udev->l2_ring)
1026                 return 0;
1027
1028         udev->l2_ring_size = pages * CNIC_PAGE_SIZE;
1029         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
1030                                            &udev->l2_ring_map,
1031                                            GFP_KERNEL | __GFP_COMP);
1032         if (!udev->l2_ring)
1033                 return -ENOMEM;
1034
1035         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
1036         udev->l2_buf_size = CNIC_PAGE_ALIGN(udev->l2_buf_size);
1037         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1038                                           &udev->l2_buf_map,
1039                                           GFP_KERNEL | __GFP_COMP);
1040         if (!udev->l2_buf) {
1041                 __cnic_free_uio_rings(udev);
1042                 return -ENOMEM;
1043         }
1044
1045         return 0;
1046
1047 }
1048
1049 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
1050 {
1051         struct cnic_local *cp = dev->cnic_priv;
1052         struct cnic_uio_dev *udev;
1053
1054         list_for_each_entry(udev, &cnic_udev_list, list) {
1055                 if (udev->pdev == dev->pcidev) {
1056                         udev->dev = dev;
1057                         if (__cnic_alloc_uio_rings(udev, pages)) {
1058                                 udev->dev = NULL;
1059                                 return -ENOMEM;
1060                         }
1061                         cp->udev = udev;
1062                         return 0;
1063                 }
1064         }
1065
1066         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
1067         if (!udev)
1068                 return -ENOMEM;
1069
1070         udev->uio_dev = -1;
1071
1072         udev->dev = dev;
1073         udev->pdev = dev->pcidev;
1074
1075         if (__cnic_alloc_uio_rings(udev, pages))
1076                 goto err_udev;
1077
1078         list_add(&udev->list, &cnic_udev_list);
1079
1080         pci_dev_get(udev->pdev);
1081
1082         cp->udev = udev;
1083
1084         return 0;
1085
1086  err_udev:
1087         kfree(udev);
1088         return -ENOMEM;
1089 }
1090
1091 static int cnic_init_uio(struct cnic_dev *dev)
1092 {
1093         struct cnic_local *cp = dev->cnic_priv;
1094         struct cnic_uio_dev *udev = cp->udev;
1095         struct uio_info *uinfo;
1096         int ret = 0;
1097
1098         if (!udev)
1099                 return -ENOMEM;
1100
1101         uinfo = &udev->cnic_uinfo;
1102
1103         uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
1104         uinfo->mem[0].internal_addr = dev->regview;
1105         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1106
1107         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1108                 uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
1109                                                      TX_MAX_TSS_RINGS + 1);
1110                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1111                                         CNIC_PAGE_MASK;
1112                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1113                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1114                 else
1115                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1116
1117                 uinfo->name = "bnx2_cnic";
1118         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1119                 uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);
1120
1121                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1122                         CNIC_PAGE_MASK;
1123                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1124
1125                 uinfo->name = "bnx2x_cnic";
1126         }
1127
1128         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1129
1130         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1131         uinfo->mem[2].size = udev->l2_ring_size;
1132         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1133
1134         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1135         uinfo->mem[3].size = udev->l2_buf_size;
1136         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1137
1138         uinfo->version = CNIC_MODULE_VERSION;
1139         uinfo->irq = UIO_IRQ_CUSTOM;
1140
1141         uinfo->open = cnic_uio_open;
1142         uinfo->release = cnic_uio_close;
1143
1144         if (udev->uio_dev == -1) {
1145                 if (!uinfo->priv) {
1146                         uinfo->priv = udev;
1147
1148                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1149                 }
1150         } else {
1151                 cnic_init_rings(dev);
1152         }
1153
1154         return ret;
1155 }
1156
1157 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1158 {
1159         struct cnic_local *cp = dev->cnic_priv;
1160         int ret;
1161
1162         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1163         if (ret)
1164                 goto error;
1165         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1166
1167         ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1168         if (ret)
1169                 goto error;
1170
1171         ret = cnic_alloc_context(dev);
1172         if (ret)
1173                 goto error;
1174
1175         ret = cnic_alloc_uio_rings(dev, 2);
1176         if (ret)
1177                 goto error;
1178
1179         ret = cnic_init_uio(dev);
1180         if (ret)
1181                 goto error;
1182
1183         return 0;
1184
1185 error:
1186         cnic_free_resc(dev);
1187         return ret;
1188 }
1189
1190 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1191 {
1192         struct cnic_local *cp = dev->cnic_priv;
1193         struct bnx2x *bp = netdev_priv(dev->netdev);
1194         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1195         int total_mem, blks, i;
1196
1197         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1198         blks = total_mem / ctx_blk_size;
1199         if (total_mem % ctx_blk_size)
1200                 blks++;
1201
1202         if (blks > cp->ethdev->ctx_tbl_len)
1203                 return -ENOMEM;
1204
1205         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1206         if (cp->ctx_arr == NULL)
1207                 return -ENOMEM;
1208
1209         cp->ctx_blks = blks;
1210         cp->ctx_blk_size = ctx_blk_size;
1211         if (!CHIP_IS_E1(bp))
1212                 cp->ctx_align = 0;
1213         else
1214                 cp->ctx_align = ctx_blk_size;
1215
1216         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1217
1218         for (i = 0; i < blks; i++) {
1219                 cp->ctx_arr[i].ctx =
1220                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1221                                            &cp->ctx_arr[i].mapping,
1222                                            GFP_KERNEL);
1223                 if (cp->ctx_arr[i].ctx == NULL)
1224                         return -ENOMEM;
1225
1226                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1227                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1228                                 cnic_free_context(dev);
1229                                 cp->ctx_blk_size += cp->ctx_align;
1230                                 i = -1;
1231                                 continue;
1232                         }
1233                 }
1234         }
1235         return 0;
1236 }
1237
1238 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1239 {
1240         struct cnic_local *cp = dev->cnic_priv;
1241         struct bnx2x *bp = netdev_priv(dev->netdev);
1242         struct cnic_eth_dev *ethdev = cp->ethdev;
1243         u32 start_cid = ethdev->starting_cid;
1244         int i, j, n, ret, pages;
1245         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1246
1247         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1248         cp->iscsi_start_cid = start_cid;
1249         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1250
1251         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
1252                 cp->max_cid_space += dev->max_fcoe_conn;
1253                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1254                 if (!cp->fcoe_init_cid)
1255                         cp->fcoe_init_cid = 0x10;
1256         }
1257
1258         cp->iscsi_tbl = kcalloc(MAX_ISCSI_TBL_SZ, sizeof(struct cnic_iscsi),
1259                                 GFP_KERNEL);
1260         if (!cp->iscsi_tbl)
1261                 goto error;
1262
1263         cp->ctx_tbl = kcalloc(cp->max_cid_space, sizeof(struct cnic_context),
1264                               GFP_KERNEL);
1265         if (!cp->ctx_tbl)
1266                 goto error;
1267
1268         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1269                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1270                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1271         }
1272
1273         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1274                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1275
1276         pages = CNIC_PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1277                 CNIC_PAGE_SIZE;
1278
1279         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1280         if (ret)
1281                 goto error;
1282
1283         n = CNIC_PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1284         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1285                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1286
1287                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1288                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1289                                                    off;
1290
1291                 if ((i % n) == (n - 1))
1292                         j++;
1293         }
1294
1295         ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1296         if (ret)
1297                 goto error;
1298
1299         if (CNIC_SUPPORTS_FCOE(bp)) {
1300                 ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1301                 if (ret)
1302                         goto error;
1303         }
1304
1305         pages = CNIC_PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / CNIC_PAGE_SIZE;
1306         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1307         if (ret)
1308                 goto error;
1309
1310         ret = cnic_alloc_bnx2x_context(dev);
1311         if (ret)
1312                 goto error;
1313
1314         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
1315                 return 0;
1316
1317         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1318
1319         cp->l2_rx_ring_size = 15;
1320
1321         ret = cnic_alloc_uio_rings(dev, 4);
1322         if (ret)
1323                 goto error;
1324
1325         ret = cnic_init_uio(dev);
1326         if (ret)
1327                 goto error;
1328
1329         return 0;
1330
1331 error:
1332         cnic_free_resc(dev);
1333         return -ENOMEM;
1334 }
1335
1336 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1337 {
1338         return cp->max_kwq_idx -
1339                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1340 }
1341
1342 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1343                                   u32 num_wqes)
1344 {
1345         struct cnic_local *cp = dev->cnic_priv;
1346         struct kwqe *prod_qe;
1347         u16 prod, sw_prod, i;
1348
1349         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1350                 return -EAGAIN;         /* bnx2 is down */
1351
1352         spin_lock_bh(&cp->cnic_ulp_lock);
1353         if (num_wqes > cnic_kwq_avail(cp) &&
1354             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1355                 spin_unlock_bh(&cp->cnic_ulp_lock);
1356                 return -EAGAIN;
1357         }
1358
1359         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1360
1361         prod = cp->kwq_prod_idx;
1362         sw_prod = prod & MAX_KWQ_IDX;
1363         for (i = 0; i < num_wqes; i++) {
1364                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1365                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1366                 prod++;
1367                 sw_prod = prod & MAX_KWQ_IDX;
1368         }
1369         cp->kwq_prod_idx = prod;
1370
1371         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1372
1373         spin_unlock_bh(&cp->cnic_ulp_lock);
1374         return 0;
1375 }
1376
1377 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1378                                    union l5cm_specific_data *l5_data)
1379 {
1380         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1381         dma_addr_t map;
1382
1383         map = ctx->kwqe_data_mapping;
1384         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1385         l5_data->phy_address.hi = (u64) map >> 32;
1386         return ctx->kwqe_data;
1387 }
1388
1389 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1390                                 u32 type, union l5cm_specific_data *l5_data)
1391 {
1392         struct cnic_local *cp = dev->cnic_priv;
1393         struct bnx2x *bp = netdev_priv(dev->netdev);
1394         struct l5cm_spe kwqe;
1395         struct kwqe_16 *kwq[1];
1396         u16 type_16;
1397         int ret;
1398
1399         kwqe.hdr.conn_and_cmd_data =
1400                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1401                              BNX2X_HW_CID(bp, cid)));
1402
1403         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1404         type_16 |= (bp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1405                    SPE_HDR_FUNCTION_ID;
1406
1407         kwqe.hdr.type = cpu_to_le16(type_16);
1408         kwqe.hdr.reserved1 = 0;
1409         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1410         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1411
1412         kwq[0] = (struct kwqe_16 *) &kwqe;
1413
1414         spin_lock_bh(&cp->cnic_ulp_lock);
1415         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1416         spin_unlock_bh(&cp->cnic_ulp_lock);
1417
1418         if (ret == 1)
1419                 return 0;
1420
1421         return ret;
1422 }
1423
1424 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1425                                    struct kcqe *cqes[], u32 num_cqes)
1426 {
1427         struct cnic_local *cp = dev->cnic_priv;
1428         struct cnic_ulp_ops *ulp_ops;
1429
1430         rcu_read_lock();
1431         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1432         if (likely(ulp_ops)) {
1433                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1434                                           cqes, num_cqes);
1435         }
1436         rcu_read_unlock();
1437 }
1438
1439 static void cnic_bnx2x_set_tcp_options(struct cnic_dev *dev, int time_stamps,
1440                                        int en_tcp_dack)
1441 {
1442         struct bnx2x *bp = netdev_priv(dev->netdev);
1443         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1444         u16 tstorm_flags = 0;
1445
1446         if (time_stamps) {
1447                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1448                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1449         }
1450         if (en_tcp_dack)
1451                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_DELAYED_ACK_EN;
1452
1453         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1454                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), xstorm_flags);
1455
1456         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1457                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), tstorm_flags);
1458 }
1459
1460 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1461 {
1462         struct cnic_local *cp = dev->cnic_priv;
1463         struct bnx2x *bp = netdev_priv(dev->netdev);
1464         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1465         int hq_bds, pages;
1466         u32 pfid = bp->pfid;
1467
1468         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1469         cp->num_ccells = req1->num_ccells_per_conn;
1470         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1471                               cp->num_iscsi_tasks;
1472         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1473                         BNX2X_ISCSI_R2TQE_SIZE;
1474         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1475         pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1476         hq_bds = pages * (CNIC_PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1477         cp->num_cqs = req1->num_cqs;
1478
1479         if (!dev->max_iscsi_conn)
1480                 return 0;
1481
1482         /* init Tstorm RAM */
1483         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1484                   req1->rq_num_wqes);
1485         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1486                   CNIC_PAGE_SIZE);
1487         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1488                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1489         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1490                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1491                   req1->num_tasks_per_conn);
1492
1493         /* init Ustorm RAM */
1494         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1495                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1496                   req1->rq_buffer_size);
1497         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1498                   CNIC_PAGE_SIZE);
1499         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1500                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1501         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1502                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1503                   req1->num_tasks_per_conn);
1504         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1505                   req1->rq_num_wqes);
1506         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1507                   req1->cq_num_wqes);
1508         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1509                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1510
1511         /* init Xstorm RAM */
1512         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1513                   CNIC_PAGE_SIZE);
1514         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1515                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1516         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1517                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1518                   req1->num_tasks_per_conn);
1519         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1520                   hq_bds);
1521         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1522                   req1->num_tasks_per_conn);
1523         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1524                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1525
1526         /* init Cstorm RAM */
1527         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1528                   CNIC_PAGE_SIZE);
1529         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1530                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1531         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1532                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1533                   req1->num_tasks_per_conn);
1534         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1535                   req1->cq_num_wqes);
1536         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1537                   hq_bds);
1538
1539         cnic_bnx2x_set_tcp_options(dev,
1540                         req1->flags & ISCSI_KWQE_INIT1_TIME_STAMPS_ENABLE,
1541                         req1->flags & ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE);
1542
1543         return 0;
1544 }
1545
1546 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1547 {
1548         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1549         struct bnx2x *bp = netdev_priv(dev->netdev);
1550         u32 pfid = bp->pfid;
1551         struct iscsi_kcqe kcqe;
1552         struct kcqe *cqes[1];
1553
1554         memset(&kcqe, 0, sizeof(kcqe));
1555         if (!dev->max_iscsi_conn) {
1556                 kcqe.completion_status =
1557                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1558                 goto done;
1559         }
1560
1561         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1562                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1563         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1564                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1565                 req2->error_bit_map[1]);
1566
1567         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1568                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1569         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1570                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1571         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1572                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1573                 req2->error_bit_map[1]);
1574
1575         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1576                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1577
1578         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1579
1580 done:
1581         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1582         cqes[0] = (struct kcqe *) &kcqe;
1583         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1584
1585         return 0;
1586 }
1587
1588 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1589 {
1590         struct cnic_local *cp = dev->cnic_priv;
1591         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1592
1593         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1594                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1595
1596                 cnic_free_dma(dev, &iscsi->hq_info);
1597                 cnic_free_dma(dev, &iscsi->r2tq_info);
1598                 cnic_free_dma(dev, &iscsi->task_array_info);
1599                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1600         } else {
1601                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1602         }
1603
1604         ctx->cid = 0;
1605 }
1606
1607 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1608 {
1609         u32 cid;
1610         int ret, pages;
1611         struct cnic_local *cp = dev->cnic_priv;
1612         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1613         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1614
1615         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1616                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1617                 if (cid == -1) {
1618                         ret = -ENOMEM;
1619                         goto error;
1620                 }
1621                 ctx->cid = cid;
1622                 return 0;
1623         }
1624
1625         cid = cnic_alloc_new_id(&cp->cid_tbl);
1626         if (cid == -1) {
1627                 ret = -ENOMEM;
1628                 goto error;
1629         }
1630
1631         ctx->cid = cid;
1632         pages = CNIC_PAGE_ALIGN(cp->task_array_size) / CNIC_PAGE_SIZE;
1633
1634         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1635         if (ret)
1636                 goto error;
1637
1638         pages = CNIC_PAGE_ALIGN(cp->r2tq_size) / CNIC_PAGE_SIZE;
1639         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1640         if (ret)
1641                 goto error;
1642
1643         pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1644         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1645         if (ret)
1646                 goto error;
1647
1648         return 0;
1649
1650 error:
1651         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1652         return ret;
1653 }
1654
1655 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1656                                 struct regpair *ctx_addr)
1657 {
1658         struct cnic_local *cp = dev->cnic_priv;
1659         struct cnic_eth_dev *ethdev = cp->ethdev;
1660         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1661         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1662         unsigned long align_off = 0;
1663         dma_addr_t ctx_map;
1664         void *ctx;
1665
1666         if (cp->ctx_align) {
1667                 unsigned long mask = cp->ctx_align - 1;
1668
1669                 if (cp->ctx_arr[blk].mapping & mask)
1670                         align_off = cp->ctx_align -
1671                                     (cp->ctx_arr[blk].mapping & mask);
1672         }
1673         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1674                 (off * BNX2X_CONTEXT_MEM_SIZE);
1675         ctx = cp->ctx_arr[blk].ctx + align_off +
1676               (off * BNX2X_CONTEXT_MEM_SIZE);
1677         if (init)
1678                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1679
1680         ctx_addr->lo = ctx_map & 0xffffffff;
1681         ctx_addr->hi = (u64) ctx_map >> 32;
1682         return ctx;
1683 }
1684
1685 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1686                                 u32 num)
1687 {
1688         struct cnic_local *cp = dev->cnic_priv;
1689         struct bnx2x *bp = netdev_priv(dev->netdev);
1690         struct iscsi_kwqe_conn_offload1 *req1 =
1691                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1692         struct iscsi_kwqe_conn_offload2 *req2 =
1693                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1694         struct iscsi_kwqe_conn_offload3 *req3;
1695         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1696         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1697         u32 cid = ctx->cid;
1698         u32 hw_cid = BNX2X_HW_CID(bp, cid);
1699         struct iscsi_context *ictx;
1700         struct regpair context_addr;
1701         int i, j, n = 2, n_max;
1702         u8 port = BP_PORT(bp);
1703
1704         ctx->ctx_flags = 0;
1705         if (!req2->num_additional_wqes)
1706                 return -EINVAL;
1707
1708         n_max = req2->num_additional_wqes + 2;
1709
1710         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1711         if (ictx == NULL)
1712                 return -ENOMEM;
1713
1714         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1715
1716         ictx->xstorm_ag_context.hq_prod = 1;
1717
1718         ictx->xstorm_st_context.iscsi.first_burst_length =
1719                 ISCSI_DEF_FIRST_BURST_LEN;
1720         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1721                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1722         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1723                 req1->sq_page_table_addr_lo;
1724         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1725                 req1->sq_page_table_addr_hi;
1726         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1727         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1728         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1729                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1730         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1731                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1732         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1733                 iscsi->hq_info.pgtbl[0];
1734         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1735                 iscsi->hq_info.pgtbl[1];
1736         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1737                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1738         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1739                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1740         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1741                 iscsi->r2tq_info.pgtbl[0];
1742         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1743                 iscsi->r2tq_info.pgtbl[1];
1744         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1745                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1746         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1747                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1748         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1749                 BNX2X_ISCSI_PBL_NOT_CACHED;
1750         ictx->xstorm_st_context.iscsi.flags.flags |=
1751                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1752         ictx->xstorm_st_context.iscsi.flags.flags |=
1753                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1754         ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1755                 ETH_P_8021Q;
1756         if (BNX2X_CHIP_IS_E2_PLUS(bp) &&
1757             bp->common.chip_port_mode == CHIP_2_PORT_MODE) {
1758
1759                 port = 0;
1760         }
1761         ictx->xstorm_st_context.common.flags =
1762                 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1763         ictx->xstorm_st_context.common.flags =
1764                 port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1765
1766         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1767         /* TSTORM requires the base address of RQ DB & not PTE */
1768         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1769                 req2->rq_page_table_addr_lo & CNIC_PAGE_MASK;
1770         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1771                 req2->rq_page_table_addr_hi;
1772         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1773         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1774         ictx->tstorm_st_context.tcp.flags2 |=
1775                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1776         ictx->tstorm_st_context.tcp.ooo_support_mode =
1777                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1778
1779         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1780
1781         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1782                 req2->rq_page_table_addr_lo;
1783         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1784                 req2->rq_page_table_addr_hi;
1785         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1786         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1787         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1788                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1789         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1790                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1791         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1792                 iscsi->r2tq_info.pgtbl[0];
1793         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1794                 iscsi->r2tq_info.pgtbl[1];
1795         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1796                 req1->cq_page_table_addr_lo;
1797         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1798                 req1->cq_page_table_addr_hi;
1799         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1800         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1801         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1802         ictx->ustorm_st_context.task_pbe_cache_index =
1803                 BNX2X_ISCSI_PBL_NOT_CACHED;
1804         ictx->ustorm_st_context.task_pdu_cache_index =
1805                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1806
1807         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1808                 if (j == 3) {
1809                         if (n >= n_max)
1810                                 break;
1811                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1812                         j = 0;
1813                 }
1814                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1815                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1816                         req3->qp_first_pte[j].hi;
1817                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1818                         req3->qp_first_pte[j].lo;
1819         }
1820
1821         ictx->ustorm_st_context.task_pbl_base.lo =
1822                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1823         ictx->ustorm_st_context.task_pbl_base.hi =
1824                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1825         ictx->ustorm_st_context.tce_phy_addr.lo =
1826                 iscsi->task_array_info.pgtbl[0];
1827         ictx->ustorm_st_context.tce_phy_addr.hi =
1828                 iscsi->task_array_info.pgtbl[1];
1829         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1830         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1831         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1832         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1833                 ISCSI_DEF_MAX_BURST_LEN;
1834         ictx->ustorm_st_context.negotiated_rx |=
1835                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1836                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1837
1838         ictx->cstorm_st_context.hq_pbl_base.lo =
1839                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1840         ictx->cstorm_st_context.hq_pbl_base.hi =
1841                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1842         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1843         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1844         ictx->cstorm_st_context.task_pbl_base.lo =
1845                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1846         ictx->cstorm_st_context.task_pbl_base.hi =
1847                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1848         /* CSTORM and USTORM initialization is different, CSTORM requires
1849          * CQ DB base & not PTE addr */
1850         ictx->cstorm_st_context.cq_db_base.lo =
1851                 req1->cq_page_table_addr_lo & CNIC_PAGE_MASK;
1852         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1853         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1854         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1855         for (i = 0; i < cp->num_cqs; i++) {
1856                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1857                         ISCSI_INITIAL_SN;
1858                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1859                         ISCSI_INITIAL_SN;
1860         }
1861
1862         ictx->xstorm_ag_context.cdu_reserved =
1863                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1864                                        ISCSI_CONNECTION_TYPE);
1865         ictx->ustorm_ag_context.cdu_usage =
1866                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1867                                        ISCSI_CONNECTION_TYPE);
1868         return 0;
1869
1870 }
1871
1872 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1873                                    u32 num, int *work)
1874 {
1875         struct iscsi_kwqe_conn_offload1 *req1;
1876         struct iscsi_kwqe_conn_offload2 *req2;
1877         struct cnic_local *cp = dev->cnic_priv;
1878         struct bnx2x *bp = netdev_priv(dev->netdev);
1879         struct cnic_context *ctx;
1880         struct iscsi_kcqe kcqe;
1881         struct kcqe *cqes[1];
1882         u32 l5_cid;
1883         int ret = 0;
1884
1885         if (num < 2) {
1886                 *work = num;
1887                 return -EINVAL;
1888         }
1889
1890         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1891         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1892         if ((num - 2) < req2->num_additional_wqes) {
1893                 *work = num;
1894                 return -EINVAL;
1895         }
1896         *work = 2 + req2->num_additional_wqes;
1897
1898         l5_cid = req1->iscsi_conn_id;
1899         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1900                 return -EINVAL;
1901
1902         memset(&kcqe, 0, sizeof(kcqe));
1903         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1904         kcqe.iscsi_conn_id = l5_cid;
1905         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1906
1907         ctx = &cp->ctx_tbl[l5_cid];
1908         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1909                 kcqe.completion_status =
1910                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1911                 goto done;
1912         }
1913
1914         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1915                 atomic_dec(&cp->iscsi_conn);
1916                 goto done;
1917         }
1918         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1919         if (ret) {
1920                 atomic_dec(&cp->iscsi_conn);
1921                 ret = 0;
1922                 goto done;
1923         }
1924         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1925         if (ret < 0) {
1926                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1927                 atomic_dec(&cp->iscsi_conn);
1928                 goto done;
1929         }
1930
1931         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1932         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(bp, cp->ctx_tbl[l5_cid].cid);
1933
1934 done:
1935         cqes[0] = (struct kcqe *) &kcqe;
1936         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1937         return 0;
1938 }
1939
1940
1941 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1942 {
1943         struct cnic_local *cp = dev->cnic_priv;
1944         struct iscsi_kwqe_conn_update *req =
1945                 (struct iscsi_kwqe_conn_update *) kwqe;
1946         void *data;
1947         union l5cm_specific_data l5_data;
1948         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1949         int ret;
1950
1951         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1952                 return -EINVAL;
1953
1954         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1955         if (!data)
1956                 return -ENOMEM;
1957
1958         memcpy(data, kwqe, sizeof(struct kwqe));
1959
1960         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1961                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1962         return ret;
1963 }
1964
1965 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1966 {
1967         struct cnic_local *cp = dev->cnic_priv;
1968         struct bnx2x *bp = netdev_priv(dev->netdev);
1969         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1970         union l5cm_specific_data l5_data;
1971         int ret;
1972         u32 hw_cid;
1973
1974         init_waitqueue_head(&ctx->waitq);
1975         ctx->wait_cond = 0;
1976         memset(&l5_data, 0, sizeof(l5_data));
1977         hw_cid = BNX2X_HW_CID(bp, ctx->cid);
1978
1979         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1980                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1981
1982         if (ret == 0) {
1983                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1984                 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1985                         return -EBUSY;
1986         }
1987
1988         return 0;
1989 }
1990
1991 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1992 {
1993         struct cnic_local *cp = dev->cnic_priv;
1994         struct iscsi_kwqe_conn_destroy *req =
1995                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1996         u32 l5_cid = req->reserved0;
1997         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1998         int ret = 0;
1999         struct iscsi_kcqe kcqe;
2000         struct kcqe *cqes[1];
2001
2002         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2003                 goto skip_cfc_delete;
2004
2005         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
2006                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
2007
2008                 if (delta > (2 * HZ))
2009                         delta = 0;
2010
2011                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2012                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
2013                 goto destroy_reply;
2014         }
2015
2016         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
2017
2018 skip_cfc_delete:
2019         cnic_free_bnx2x_conn_resc(dev, l5_cid);
2020
2021         if (!ret) {
2022                 atomic_dec(&cp->iscsi_conn);
2023                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2024         }
2025
2026 destroy_reply:
2027         memset(&kcqe, 0, sizeof(kcqe));
2028         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
2029         kcqe.iscsi_conn_id = l5_cid;
2030         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
2031         kcqe.iscsi_conn_context_id = req->context_id;
2032
2033         cqes[0] = (struct kcqe *) &kcqe;
2034         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
2035
2036         return 0;
2037 }
2038
2039 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
2040                                       struct l4_kwq_connect_req1 *kwqe1,
2041                                       struct l4_kwq_connect_req3 *kwqe3,
2042                                       struct l5cm_active_conn_buffer *conn_buf)
2043 {
2044         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
2045         struct l5cm_xstorm_conn_buffer *xstorm_buf =
2046                 &conn_buf->xstorm_conn_buffer;
2047         struct l5cm_tstorm_conn_buffer *tstorm_buf =
2048                 &conn_buf->tstorm_conn_buffer;
2049         struct regpair context_addr;
2050         u32 cid = BNX2X_SW_CID(kwqe1->cid);
2051         struct in6_addr src_ip, dst_ip;
2052         int i;
2053         u32 *addrp;
2054
2055         addrp = (u32 *) &conn_addr->local_ip_addr;
2056         for (i = 0; i < 4; i++, addrp++)
2057                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2058
2059         addrp = (u32 *) &conn_addr->remote_ip_addr;
2060         for (i = 0; i < 4; i++, addrp++)
2061                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2062
2063         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
2064
2065         xstorm_buf->context_addr.hi = context_addr.hi;
2066         xstorm_buf->context_addr.lo = context_addr.lo;
2067         xstorm_buf->mss = 0xffff;
2068         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
2069         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
2070                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
2071         xstorm_buf->pseudo_header_checksum =
2072                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
2073
2074         if (kwqe3->ka_timeout) {
2075                 tstorm_buf->ka_enable = 1;
2076                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
2077                 tstorm_buf->ka_interval = kwqe3->ka_interval;
2078                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
2079         }
2080         tstorm_buf->max_rt_time = 0xffffffff;
2081 }
2082
2083 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2084 {
2085         struct bnx2x *bp = netdev_priv(dev->netdev);
2086         u32 pfid = bp->pfid;
2087         u8 *mac = dev->mac_addr;
2088
2089         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2090                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2091         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2092                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2093         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2094                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2095         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2096                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2097         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2098                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2099         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2100                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2101
2102         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2103                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2104         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2105                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2106                  mac[4]);
2107         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2108                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2109         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2110                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2111                  mac[2]);
2112         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2113                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2114         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2115                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2116                  mac[0]);
2117 }
2118
2119 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2120                               u32 num, int *work)
2121 {
2122         struct cnic_local *cp = dev->cnic_priv;
2123         struct bnx2x *bp = netdev_priv(dev->netdev);
2124         struct l4_kwq_connect_req1 *kwqe1 =
2125                 (struct l4_kwq_connect_req1 *) wqes[0];
2126         struct l4_kwq_connect_req3 *kwqe3;
2127         struct l5cm_active_conn_buffer *conn_buf;
2128         struct l5cm_conn_addr_params *conn_addr;
2129         union l5cm_specific_data l5_data;
2130         u32 l5_cid = kwqe1->pg_cid;
2131         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2132         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2133         int ret;
2134
2135         if (num < 2) {
2136                 *work = num;
2137                 return -EINVAL;
2138         }
2139
2140         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2141                 *work = 3;
2142         else
2143                 *work = 2;
2144
2145         if (num < *work) {
2146                 *work = num;
2147                 return -EINVAL;
2148         }
2149
2150         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2151                 netdev_err(dev->netdev, "conn_buf size too big\n");
2152                 return -ENOMEM;
2153         }
2154         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2155         if (!conn_buf)
2156                 return -ENOMEM;
2157
2158         memset(conn_buf, 0, sizeof(*conn_buf));
2159
2160         conn_addr = &conn_buf->conn_addr_buf;
2161         conn_addr->remote_addr_0 = csk->ha[0];
2162         conn_addr->remote_addr_1 = csk->ha[1];
2163         conn_addr->remote_addr_2 = csk->ha[2];
2164         conn_addr->remote_addr_3 = csk->ha[3];
2165         conn_addr->remote_addr_4 = csk->ha[4];
2166         conn_addr->remote_addr_5 = csk->ha[5];
2167
2168         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2169                 struct l4_kwq_connect_req2 *kwqe2 =
2170                         (struct l4_kwq_connect_req2 *) wqes[1];
2171
2172                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2173                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2174                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2175
2176                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2177                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2178                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2179                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2180         }
2181         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2182
2183         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2184         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2185         conn_addr->local_tcp_port = kwqe1->src_port;
2186         conn_addr->remote_tcp_port = kwqe1->dst_port;
2187
2188         conn_addr->pmtu = kwqe3->pmtu;
2189         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2190
2191         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2192                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(bp->pfid), csk->vlan_id);
2193
2194         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2195                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2196         if (!ret)
2197                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2198
2199         return ret;
2200 }
2201
2202 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2203 {
2204         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2205         union l5cm_specific_data l5_data;
2206         int ret;
2207
2208         memset(&l5_data, 0, sizeof(l5_data));
2209         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2210                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2211         return ret;
2212 }
2213
2214 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2215 {
2216         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2217         union l5cm_specific_data l5_data;
2218         int ret;
2219
2220         memset(&l5_data, 0, sizeof(l5_data));
2221         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2222                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2223         return ret;
2224 }
2225 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2226 {
2227         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2228         struct l4_kcq kcqe;
2229         struct kcqe *cqes[1];
2230
2231         memset(&kcqe, 0, sizeof(kcqe));
2232         kcqe.pg_host_opaque = req->host_opaque;
2233         kcqe.pg_cid = req->host_opaque;
2234         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2235         cqes[0] = (struct kcqe *) &kcqe;
2236         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2237         return 0;
2238 }
2239
2240 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2241 {
2242         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2243         struct l4_kcq kcqe;
2244         struct kcqe *cqes[1];
2245
2246         memset(&kcqe, 0, sizeof(kcqe));
2247         kcqe.pg_host_opaque = req->pg_host_opaque;
2248         kcqe.pg_cid = req->pg_cid;
2249         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2250         cqes[0] = (struct kcqe *) &kcqe;
2251         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2252         return 0;
2253 }
2254
2255 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2256 {
2257         struct fcoe_kwqe_stat *req;
2258         struct fcoe_stat_ramrod_params *fcoe_stat;
2259         union l5cm_specific_data l5_data;
2260         struct cnic_local *cp = dev->cnic_priv;
2261         struct bnx2x *bp = netdev_priv(dev->netdev);
2262         int ret;
2263         u32 cid;
2264
2265         req = (struct fcoe_kwqe_stat *) kwqe;
2266         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2267
2268         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2269         if (!fcoe_stat)
2270                 return -ENOMEM;
2271
2272         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2273         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2274
2275         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2276                                   FCOE_CONNECTION_TYPE, &l5_data);
2277         return ret;
2278 }
2279
2280 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2281                                  u32 num, int *work)
2282 {
2283         int ret;
2284         struct cnic_local *cp = dev->cnic_priv;
2285         struct bnx2x *bp = netdev_priv(dev->netdev);
2286         u32 cid;
2287         struct fcoe_init_ramrod_params *fcoe_init;
2288         struct fcoe_kwqe_init1 *req1;
2289         struct fcoe_kwqe_init2 *req2;
2290         struct fcoe_kwqe_init3 *req3;
2291         union l5cm_specific_data l5_data;
2292
2293         if (num < 3) {
2294                 *work = num;
2295                 return -EINVAL;
2296         }
2297         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2298         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2299         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2300         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2301                 *work = 1;
2302                 return -EINVAL;
2303         }
2304         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2305                 *work = 2;
2306                 return -EINVAL;
2307         }
2308
2309         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2310                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2311                 return -ENOMEM;
2312         }
2313         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2314         if (!fcoe_init)
2315                 return -ENOMEM;
2316
2317         memset(fcoe_init, 0, sizeof(*fcoe_init));
2318         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2319         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2320         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2321         fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2322         fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2323         fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2324
2325         fcoe_init->sb_num = cp->status_blk_num;
2326         fcoe_init->eq_prod = MAX_KCQ_IDX;
2327         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2328         cp->kcq2.sw_prod_idx = 0;
2329
2330         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2331         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2332                                   FCOE_CONNECTION_TYPE, &l5_data);
2333         *work = 3;
2334         return ret;
2335 }
2336
2337 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2338                                  u32 num, int *work)
2339 {
2340         int ret = 0;
2341         u32 cid = -1, l5_cid;
2342         struct cnic_local *cp = dev->cnic_priv;
2343         struct bnx2x *bp = netdev_priv(dev->netdev);
2344         struct fcoe_kwqe_conn_offload1 *req1;
2345         struct fcoe_kwqe_conn_offload2 *req2;
2346         struct fcoe_kwqe_conn_offload3 *req3;
2347         struct fcoe_kwqe_conn_offload4 *req4;
2348         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2349         struct cnic_context *ctx;
2350         struct fcoe_context *fctx;
2351         struct regpair ctx_addr;
2352         union l5cm_specific_data l5_data;
2353         struct fcoe_kcqe kcqe;
2354         struct kcqe *cqes[1];
2355
2356         if (num < 4) {
2357                 *work = num;
2358                 return -EINVAL;
2359         }
2360         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2361         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2362         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2363         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2364
2365         *work = 4;
2366
2367         l5_cid = req1->fcoe_conn_id;
2368         if (l5_cid >= dev->max_fcoe_conn)
2369                 goto err_reply;
2370
2371         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2372
2373         ctx = &cp->ctx_tbl[l5_cid];
2374         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2375                 goto err_reply;
2376
2377         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2378         if (ret) {
2379                 ret = 0;
2380                 goto err_reply;
2381         }
2382         cid = ctx->cid;
2383
2384         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2385         if (fctx) {
2386                 u32 hw_cid = BNX2X_HW_CID(bp, cid);
2387                 u32 val;
2388
2389                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2390                                              FCOE_CONNECTION_TYPE);
2391                 fctx->xstorm_ag_context.cdu_reserved = val;
2392                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2393                                              FCOE_CONNECTION_TYPE);
2394                 fctx->ustorm_ag_context.cdu_usage = val;
2395         }
2396         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2397                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2398                 goto err_reply;
2399         }
2400         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2401         if (!fcoe_offload)
2402                 goto err_reply;
2403
2404         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2405         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2406         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2407         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2408         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2409
2410         cid = BNX2X_HW_CID(bp, cid);
2411         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2412                                   FCOE_CONNECTION_TYPE, &l5_data);
2413         if (!ret)
2414                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2415
2416         return ret;
2417
2418 err_reply:
2419         if (cid != -1)
2420                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2421
2422         memset(&kcqe, 0, sizeof(kcqe));
2423         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2424         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2425         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2426
2427         cqes[0] = (struct kcqe *) &kcqe;
2428         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2429         return ret;
2430 }
2431
2432 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2433 {
2434         struct fcoe_kwqe_conn_enable_disable *req;
2435         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2436         union l5cm_specific_data l5_data;
2437         int ret;
2438         u32 cid, l5_cid;
2439         struct cnic_local *cp = dev->cnic_priv;
2440
2441         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2442         cid = req->context_id;
2443         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2444
2445         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2446                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2447                 return -ENOMEM;
2448         }
2449         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2450         if (!fcoe_enable)
2451                 return -ENOMEM;
2452
2453         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2454         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2455         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2456                                   FCOE_CONNECTION_TYPE, &l5_data);
2457         return ret;
2458 }
2459
2460 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2461 {
2462         struct fcoe_kwqe_conn_enable_disable *req;
2463         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2464         union l5cm_specific_data l5_data;
2465         int ret;
2466         u32 cid, l5_cid;
2467         struct cnic_local *cp = dev->cnic_priv;
2468
2469         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2470         cid = req->context_id;
2471         l5_cid = req->conn_id;
2472         if (l5_cid >= dev->max_fcoe_conn)
2473                 return -EINVAL;
2474
2475         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2476
2477         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2478                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2479                 return -ENOMEM;
2480         }
2481         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2482         if (!fcoe_disable)
2483                 return -ENOMEM;
2484
2485         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2486         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2487         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2488                                   FCOE_CONNECTION_TYPE, &l5_data);
2489         return ret;
2490 }
2491
2492 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2493 {
2494         struct fcoe_kwqe_conn_destroy *req;
2495         union l5cm_specific_data l5_data;
2496         int ret;
2497         u32 cid, l5_cid;
2498         struct cnic_local *cp = dev->cnic_priv;
2499         struct cnic_context *ctx;
2500         struct fcoe_kcqe kcqe;
2501         struct kcqe *cqes[1];
2502
2503         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2504         cid = req->context_id;
2505         l5_cid = req->conn_id;
2506         if (l5_cid >= dev->max_fcoe_conn)
2507                 return -EINVAL;
2508
2509         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2510
2511         ctx = &cp->ctx_tbl[l5_cid];
2512
2513         init_waitqueue_head(&ctx->waitq);
2514         ctx->wait_cond = 0;
2515
2516         memset(&kcqe, 0, sizeof(kcqe));
2517         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2518         memset(&l5_data, 0, sizeof(l5_data));
2519         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2520                                   FCOE_CONNECTION_TYPE, &l5_data);
2521         if (ret == 0) {
2522                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2523                 if (ctx->wait_cond)
2524                         kcqe.completion_status = 0;
2525         }
2526
2527         set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2528         queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2529
2530         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2531         kcqe.fcoe_conn_id = req->conn_id;
2532         kcqe.fcoe_conn_context_id = cid;
2533
2534         cqes[0] = (struct kcqe *) &kcqe;
2535         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2536         return ret;
2537 }
2538
2539 static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2540 {
2541         struct cnic_local *cp = dev->cnic_priv;
2542         u32 i;
2543
2544         for (i = start_cid; i < cp->max_cid_space; i++) {
2545                 struct cnic_context *ctx = &cp->ctx_tbl[i];
2546                 int j;
2547
2548                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2549                         msleep(10);
2550
2551                 for (j = 0; j < 5; j++) {
2552                         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2553                                 break;
2554                         msleep(20);
2555                 }
2556
2557                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2558                         netdev_warn(dev->netdev, "CID %x not deleted\n",
2559                                    ctx->cid);
2560         }
2561 }
2562
2563 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2564 {
2565         union l5cm_specific_data l5_data;
2566         struct cnic_local *cp = dev->cnic_priv;
2567         struct bnx2x *bp = netdev_priv(dev->netdev);
2568         int ret;
2569         u32 cid;
2570
2571         cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2572
2573         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2574
2575         memset(&l5_data, 0, sizeof(l5_data));
2576         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2577                                   FCOE_CONNECTION_TYPE, &l5_data);
2578         return ret;
2579 }
2580
2581 static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2582 {
2583         struct cnic_local *cp = dev->cnic_priv;
2584         struct kcqe kcqe;
2585         struct kcqe *cqes[1];
2586         u32 cid;
2587         u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2588         u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2589         u32 kcqe_op;
2590         int ulp_type;
2591
2592         cid = kwqe->kwqe_info0;
2593         memset(&kcqe, 0, sizeof(kcqe));
2594
2595         if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2596                 u32 l5_cid = 0;
2597
2598                 ulp_type = CNIC_ULP_FCOE;
2599                 if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2600                         struct fcoe_kwqe_conn_enable_disable *req;
2601
2602                         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2603                         kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2604                         cid = req->context_id;
2605                         l5_cid = req->conn_id;
2606                 } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2607                         kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2608                 } else {
2609                         return;
2610                 }
2611                 kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2612                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2613                 kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2614                 kcqe.kcqe_info2 = cid;
2615                 kcqe.kcqe_info0 = l5_cid;
2616
2617         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2618                 ulp_type = CNIC_ULP_ISCSI;
2619                 if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2620                         cid = kwqe->kwqe_info1;
2621
2622                 kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2623                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2624                 kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2625                 kcqe.kcqe_info2 = cid;
2626                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2627
2628         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2629                 struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2630
2631                 ulp_type = CNIC_ULP_L4;
2632                 if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2633                         kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2634                 else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2635                         kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2636                 else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2637                         kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2638                 else
2639                         return;
2640
2641                 kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2642                                     KCQE_FLAGS_LAYER_MASK_L4;
2643                 l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2644                 l4kcqe->cid = cid;
2645                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2646         } else {
2647                 return;
2648         }
2649
2650         cqes[0] = &kcqe;
2651         cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2652 }
2653
2654 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2655                                          struct kwqe *wqes[], u32 num_wqes)
2656 {
2657         int i, work, ret;
2658         u32 opcode;
2659         struct kwqe *kwqe;
2660
2661         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2662                 return -EAGAIN;         /* bnx2 is down */
2663
2664         for (i = 0; i < num_wqes; ) {
2665                 kwqe = wqes[i];
2666                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2667                 work = 1;
2668
2669                 switch (opcode) {
2670                 case ISCSI_KWQE_OPCODE_INIT1:
2671                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2672                         break;
2673                 case ISCSI_KWQE_OPCODE_INIT2:
2674                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2675                         break;
2676                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2677                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2678                                                      num_wqes - i, &work);
2679                         break;
2680                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2681                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2682                         break;
2683                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2684                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2685                         break;
2686                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2687                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2688                                                  &work);
2689                         break;
2690                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2691                         ret = cnic_bnx2x_close(dev, kwqe);
2692                         break;
2693                 case L4_KWQE_OPCODE_VALUE_RESET:
2694                         ret = cnic_bnx2x_reset(dev, kwqe);
2695                         break;
2696                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2697                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2698                         break;
2699                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2700                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2701                         break;
2702                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2703                         ret = 0;
2704                         break;
2705                 default:
2706                         ret = 0;
2707                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2708                                    opcode);
2709                         break;
2710                 }
2711                 if (ret < 0) {
2712                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2713                                    opcode);
2714
2715                         /* Possibly bnx2x parity error, send completion
2716                          * to ulp drivers with error code to speed up
2717                          * cleanup and reset recovery.
2718                          */
2719                         if (ret == -EIO || ret == -EAGAIN)
2720                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2721                 }
2722                 i += work;
2723         }
2724         return 0;
2725 }
2726
2727 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2728                                         struct kwqe *wqes[], u32 num_wqes)
2729 {
2730         struct bnx2x *bp = netdev_priv(dev->netdev);
2731         int i, work, ret;
2732         u32 opcode;
2733         struct kwqe *kwqe;
2734
2735         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2736                 return -EAGAIN;         /* bnx2 is down */
2737
2738         if (!BNX2X_CHIP_IS_E2_PLUS(bp))
2739                 return -EINVAL;
2740
2741         for (i = 0; i < num_wqes; ) {
2742                 kwqe = wqes[i];
2743                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2744                 work = 1;
2745
2746                 switch (opcode) {
2747                 case FCOE_KWQE_OPCODE_INIT1:
2748                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2749                                                     num_wqes - i, &work);
2750                         break;
2751                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2752                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2753                                                     num_wqes - i, &work);
2754                         break;
2755                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2756                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2757                         break;
2758                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2759                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2760                         break;
2761                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2762                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2763                         break;
2764                 case FCOE_KWQE_OPCODE_DESTROY:
2765                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2766                         break;
2767                 case FCOE_KWQE_OPCODE_STAT:
2768                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2769                         break;
2770                 default:
2771                         ret = 0;
2772                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2773                                    opcode);
2774                         break;
2775                 }
2776                 if (ret < 0) {
2777                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2778                                    opcode);
2779
2780                         /* Possibly bnx2x parity error, send completion
2781                          * to ulp drivers with error code to speed up
2782                          * cleanup and reset recovery.
2783                          */
2784                         if (ret == -EIO || ret == -EAGAIN)
2785                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2786                 }
2787                 i += work;
2788         }
2789         return 0;
2790 }
2791
2792 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2793                                    u32 num_wqes)
2794 {
2795         int ret = -EINVAL;
2796         u32 layer_code;
2797
2798         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2799                 return -EAGAIN;         /* bnx2x is down */
2800
2801         if (!num_wqes)
2802                 return 0;
2803
2804         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2805         switch (layer_code) {
2806         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2807         case KWQE_FLAGS_LAYER_MASK_L4:
2808         case KWQE_FLAGS_LAYER_MASK_L2:
2809                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2810                 break;
2811
2812         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2813                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2814                 break;
2815         }
2816         return ret;
2817 }
2818
2819 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2820 {
2821         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2822                 return KCQE_FLAGS_LAYER_MASK_L4;
2823
2824         return opflag & KCQE_FLAGS_LAYER_MASK;
2825 }
2826
2827 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2828 {
2829         struct cnic_local *cp = dev->cnic_priv;
2830         int i, j, comp = 0;
2831
2832         i = 0;
2833         j = 1;
2834         while (num_cqes) {
2835                 struct cnic_ulp_ops *ulp_ops;
2836                 int ulp_type;
2837                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2838                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2839
2840                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2841                         comp++;
2842
2843                 while (j < num_cqes) {
2844                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2845
2846                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2847                                 break;
2848
2849                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2850                                 comp++;
2851                         j++;
2852                 }
2853
2854                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2855                         ulp_type = CNIC_ULP_RDMA;
2856                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2857                         ulp_type = CNIC_ULP_ISCSI;
2858                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2859                         ulp_type = CNIC_ULP_FCOE;
2860                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2861                         ulp_type = CNIC_ULP_L4;
2862                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2863                         goto end;
2864                 else {
2865                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2866                                    kcqe_op_flag);
2867                         goto end;
2868                 }
2869
2870                 rcu_read_lock();
2871                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2872                 if (likely(ulp_ops)) {
2873                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2874                                                   cp->completed_kcq + i, j);
2875                 }
2876                 rcu_read_unlock();
2877 end:
2878                 num_cqes -= j;
2879                 i += j;
2880                 j = 1;
2881         }
2882         if (unlikely(comp))
2883                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2884 }
2885
2886 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2887 {
2888         struct cnic_local *cp = dev->cnic_priv;
2889         u16 i, ri, hw_prod, last;
2890         struct kcqe *kcqe;
2891         int kcqe_cnt = 0, last_cnt = 0;
2892
2893         i = ri = last = info->sw_prod_idx;
2894         ri &= MAX_KCQ_IDX;
2895         hw_prod = *info->hw_prod_idx_ptr;
2896         hw_prod = info->hw_idx(hw_prod);
2897
2898         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2899                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2900                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2901                 i = info->next_idx(i);
2902                 ri = i & MAX_KCQ_IDX;
2903                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2904                         last_cnt = kcqe_cnt;
2905                         last = i;
2906                 }
2907         }
2908
2909         info->sw_prod_idx = last;
2910         return last_cnt;
2911 }
2912
2913 static int cnic_l2_completion(struct cnic_local *cp)
2914 {
2915         u16 hw_cons, sw_cons;
2916         struct cnic_uio_dev *udev = cp->udev;
2917         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2918                                         (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
2919         u32 cmd;
2920         int comp = 0;
2921
2922         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2923                 return 0;
2924
2925         hw_cons = *cp->rx_cons_ptr;
2926         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2927                 hw_cons++;
2928
2929         sw_cons = cp->rx_cons;
2930         while (sw_cons != hw_cons) {
2931                 u8 cqe_fp_flags;
2932
2933                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2934                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2935                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2936                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2937                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2938                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2939                             cmd == RAMROD_CMD_ID_ETH_HALT)
2940                                 comp++;
2941                 }
2942                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2943         }
2944         return comp;
2945 }
2946
2947 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2948 {
2949         u16 rx_cons, tx_cons;
2950         int comp = 0;
2951
2952         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2953                 return;
2954
2955         rx_cons = *cp->rx_cons_ptr;
2956         tx_cons = *cp->tx_cons_ptr;
2957         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2958                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2959                         comp = cnic_l2_completion(cp);
2960
2961                 cp->tx_cons = tx_cons;
2962                 cp->rx_cons = rx_cons;
2963
2964                 if (cp->udev)
2965                         uio_event_notify(&cp->udev->cnic_uinfo);
2966         }
2967         if (comp)
2968                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2969 }
2970
2971 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2972 {
2973         struct cnic_local *cp = dev->cnic_priv;
2974         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2975         int kcqe_cnt;
2976
2977         /* status block index must be read before reading other fields */
2978         rmb();
2979         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2980
2981         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2982
2983                 service_kcqes(dev, kcqe_cnt);
2984
2985                 /* Tell compiler that status_blk fields can change. */
2986                 barrier();
2987                 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2988                 /* status block index must be read first */
2989                 rmb();
2990                 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2991         }
2992
2993         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2994
2995         cnic_chk_pkt_rings(cp);
2996
2997         return status_idx;
2998 }
2999
3000 static int cnic_service_bnx2(void *data, void *status_blk)
3001 {
3002         struct cnic_dev *dev = data;
3003
3004         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3005                 struct status_block *sblk = status_blk;
3006
3007                 return sblk->status_idx;
3008         }
3009
3010         return cnic_service_bnx2_queues(dev);
3011 }
3012
3013 static void cnic_service_bnx2_msix(unsigned long data)
3014 {
3015         struct cnic_dev *dev = (struct cnic_dev *) data;
3016         struct cnic_local *cp = dev->cnic_priv;
3017
3018         cp->last_status_idx = cnic_service_bnx2_queues(dev);
3019
3020         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3021                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3022 }
3023
3024 static void cnic_doirq(struct cnic_dev *dev)
3025 {
3026         struct cnic_local *cp = dev->cnic_priv;
3027
3028         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3029                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
3030
3031                 prefetch(cp->status_blk.gen);
3032                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
3033
3034                 tasklet_schedule(&cp->cnic_irq_task);
3035         }
3036 }
3037
3038 static irqreturn_t cnic_irq(int irq, void *dev_instance)
3039 {
3040         struct cnic_dev *dev = dev_instance;
3041         struct cnic_local *cp = dev->cnic_priv;
3042
3043         if (cp->ack_int)
3044                 cp->ack_int(dev);
3045
3046         cnic_doirq(dev);
3047
3048         return IRQ_HANDLED;
3049 }
3050
3051 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
3052                                       u16 index, u8 op, u8 update)
3053 {
3054         struct bnx2x *bp = netdev_priv(dev->netdev);
3055         u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp) * 32 +
3056                        COMMAND_REG_INT_ACK);
3057         struct igu_ack_register igu_ack;
3058
3059         igu_ack.status_block_index = index;
3060         igu_ack.sb_id_and_flags =
3061                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
3062                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3063                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3064                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3065
3066         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3067 }
3068
3069 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3070                             u16 index, u8 op, u8 update)
3071 {
3072         struct igu_regular cmd_data;
3073         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3074
3075         cmd_data.sb_id_and_flags =
3076                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3077                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3078                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
3079                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3080
3081
3082         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3083 }
3084
3085 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3086 {
3087         struct cnic_local *cp = dev->cnic_priv;
3088
3089         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3090                            IGU_INT_DISABLE, 0);
3091 }
3092
3093 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3094 {
3095         struct cnic_local *cp = dev->cnic_priv;
3096
3097         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3098                         IGU_INT_DISABLE, 0);
3099 }
3100
3101 static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
3102 {
3103         struct cnic_local *cp = dev->cnic_priv;
3104
3105         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
3106                            IGU_INT_ENABLE, 1);
3107 }
3108
3109 static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
3110 {
3111         struct cnic_local *cp = dev->cnic_priv;
3112
3113         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
3114                         IGU_INT_ENABLE, 1);
3115 }
3116
3117 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3118 {
3119         u32 last_status = *info->status_idx_ptr;
3120         int kcqe_cnt;
3121
3122         /* status block index must be read before reading the KCQ */
3123         rmb();
3124         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3125
3126                 service_kcqes(dev, kcqe_cnt);
3127
3128                 /* Tell compiler that sblk fields can change. */
3129                 barrier();
3130
3131                 last_status = *info->status_idx_ptr;
3132                 /* status block index must be read before reading the KCQ */
3133                 rmb();
3134         }
3135         return last_status;
3136 }
3137
3138 static void cnic_service_bnx2x_bh(unsigned long data)
3139 {
3140         struct cnic_dev *dev = (struct cnic_dev *) data;
3141         struct cnic_local *cp = dev->cnic_priv;
3142         struct bnx2x *bp = netdev_priv(dev->netdev);
3143         u32 status_idx, new_status_idx;
3144
3145         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3146                 return;
3147
3148         while (1) {
3149                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3150
3151                 CNIC_WR16(dev, cp->kcq1.io_addr,
3152                           cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3153
3154                 if (!CNIC_SUPPORTS_FCOE(bp)) {
3155                         cp->arm_int(dev, status_idx);
3156                         break;
3157                 }
3158
3159                 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3160
3161                 if (new_status_idx != status_idx)
3162                         continue;
3163
3164                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3165                           MAX_KCQ_IDX);
3166
3167                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3168                                 status_idx, IGU_INT_ENABLE, 1);
3169
3170                 break;
3171         }
3172 }
3173
3174 static int cnic_service_bnx2x(void *data, void *status_blk)
3175 {
3176         struct cnic_dev *dev = data;
3177         struct cnic_local *cp = dev->cnic_priv;
3178
3179         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3180                 cnic_doirq(dev);
3181
3182         cnic_chk_pkt_rings(cp);
3183
3184         return 0;
3185 }
3186
3187 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3188 {
3189         struct cnic_ulp_ops *ulp_ops;
3190
3191         if (if_type == CNIC_ULP_ISCSI)
3192                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3193
3194         mutex_lock(&cnic_lock);
3195         ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3196                                             lockdep_is_held(&cnic_lock));
3197         if (!ulp_ops) {
3198                 mutex_unlock(&cnic_lock);
3199                 return;
3200         }
3201         set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3202         mutex_unlock(&cnic_lock);
3203
3204         if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3205                 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3206
3207         clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3208 }
3209
3210 static void cnic_ulp_stop(struct cnic_dev *dev)
3211 {
3212         struct cnic_local *cp = dev->cnic_priv;
3213         int if_type;
3214
3215         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3216                 cnic_ulp_stop_one(cp, if_type);
3217 }
3218
3219 static void cnic_ulp_start(struct cnic_dev *dev)
3220 {
3221         struct cnic_local *cp = dev->cnic_priv;
3222         int if_type;
3223
3224         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3225                 struct cnic_ulp_ops *ulp_ops;
3226
3227                 mutex_lock(&cnic_lock);
3228                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3229                                                     lockdep_is_held(&cnic_lock));
3230                 if (!ulp_ops || !ulp_ops->cnic_start) {
3231                         mutex_unlock(&cnic_lock);
3232                         continue;
3233                 }
3234                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3235                 mutex_unlock(&cnic_lock);
3236
3237                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3238                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3239
3240                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3241         }
3242 }
3243
3244 static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3245 {
3246         struct cnic_local *cp = dev->cnic_priv;
3247         struct cnic_ulp_ops *ulp_ops;
3248         int rc;
3249
3250         mutex_lock(&cnic_lock);
3251         ulp_ops = rcu_dereference_protected(cp->ulp_ops[ulp_type],
3252                                             lockdep_is_held(&cnic_lock));
3253         if (ulp_ops && ulp_ops->cnic_get_stats)
3254                 rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3255         else
3256                 rc = -ENODEV;
3257         mutex_unlock(&cnic_lock);
3258         return rc;
3259 }
3260
3261 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3262 {
3263         struct cnic_dev *dev = data;
3264         int ulp_type = CNIC_ULP_ISCSI;
3265
3266         switch (info->cmd) {
3267         case CNIC_CTL_STOP_CMD:
3268                 cnic_hold(dev);
3269
3270                 cnic_ulp_stop(dev);
3271                 cnic_stop_hw(dev);
3272
3273                 cnic_put(dev);
3274                 break;
3275         case CNIC_CTL_START_CMD:
3276                 cnic_hold(dev);
3277
3278                 if (!cnic_start_hw(dev))
3279                         cnic_ulp_start(dev);
3280
3281                 cnic_put(dev);
3282                 break;
3283         case CNIC_CTL_STOP_ISCSI_CMD: {
3284                 struct cnic_local *cp = dev->cnic_priv;
3285                 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3286                 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3287                 break;
3288         }
3289         case CNIC_CTL_COMPLETION_CMD: {
3290                 struct cnic_ctl_completion *comp = &info->data.comp;
3291                 u32 cid = BNX2X_SW_CID(comp->cid);
3292                 u32 l5_cid;
3293                 struct cnic_local *cp = dev->cnic_priv;
3294
3295                 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
3296                         break;
3297
3298                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3299                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3300
3301                         if (unlikely(comp->error)) {
3302                                 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3303                                 netdev_err(dev->netdev,
3304                                            "CID %x CFC delete comp error %x\n",
3305                                            cid, comp->error);
3306                         }
3307
3308                         ctx->wait_cond = 1;
3309                         wake_up(&ctx->waitq);
3310                 }
3311                 break;
3312         }
3313         case CNIC_CTL_FCOE_STATS_GET_CMD:
3314                 ulp_type = CNIC_ULP_FCOE;
3315                 /* fall through */
3316         case CNIC_CTL_ISCSI_STATS_GET_CMD:
3317                 cnic_hold(dev);
3318                 cnic_copy_ulp_stats(dev, ulp_type);
3319                 cnic_put(dev);
3320                 break;
3321
3322         default:
3323                 return -EINVAL;
3324         }
3325         return 0;
3326 }
3327
3328 static void cnic_ulp_init(struct cnic_dev *dev)
3329 {
3330         int i;
3331         struct cnic_local *cp = dev->cnic_priv;
3332
3333         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3334                 struct cnic_ulp_ops *ulp_ops;
3335
3336                 mutex_lock(&cnic_lock);
3337                 ulp_ops = cnic_ulp_tbl_prot(i);
3338                 if (!ulp_ops || !ulp_ops->cnic_init) {
3339                         mutex_unlock(&cnic_lock);
3340                         continue;
3341                 }
3342                 ulp_get(ulp_ops);
3343                 mutex_unlock(&cnic_lock);
3344
3345                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3346                         ulp_ops->cnic_init(dev);
3347
3348                 ulp_put(ulp_ops);
3349         }
3350 }
3351
3352 static void cnic_ulp_exit(struct cnic_dev *dev)
3353 {
3354         int i;
3355         struct cnic_local *cp = dev->cnic_priv;
3356
3357         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3358                 struct cnic_ulp_ops *ulp_ops;
3359
3360                 mutex_lock(&cnic_lock);
3361                 ulp_ops = cnic_ulp_tbl_prot(i);
3362                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3363                         mutex_unlock(&cnic_lock);
3364                         continue;
3365                 }
3366                 ulp_get(ulp_ops);
3367                 mutex_unlock(&cnic_lock);
3368
3369                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3370                         ulp_ops->cnic_exit(dev);
3371
3372                 ulp_put(ulp_ops);
3373         }
3374 }
3375
3376 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3377 {
3378         struct cnic_dev *dev = csk->dev;
3379         struct l4_kwq_offload_pg *l4kwqe;
3380         struct kwqe *wqes[1];
3381
3382         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3383         memset(l4kwqe, 0, sizeof(*l4kwqe));
3384         wqes[0] = (struct kwqe *) l4kwqe;
3385
3386         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3387         l4kwqe->flags =
3388                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3389         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3390
3391         l4kwqe->da0 = csk->ha[0];
3392         l4kwqe->da1 = csk->ha[1];
3393         l4kwqe->da2 = csk->ha[2];
3394         l4kwqe->da3 = csk->ha[3];
3395         l4kwqe->da4 = csk->ha[4];
3396         l4kwqe->da5 = csk->ha[5];
3397
3398         l4kwqe->sa0 = dev->mac_addr[0];
3399         l4kwqe->sa1 = dev->mac_addr[1];
3400         l4kwqe->sa2 = dev->mac_addr[2];
3401         l4kwqe->sa3 = dev->mac_addr[3];
3402         l4kwqe->sa4 = dev->mac_addr[4];
3403         l4kwqe->sa5 = dev->mac_addr[5];
3404
3405         l4kwqe->etype = ETH_P_IP;
3406         l4kwqe->ipid_start = DEF_IPID_START;
3407         l4kwqe->host_opaque = csk->l5_cid;
3408
3409         if (csk->vlan_id) {
3410                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3411                 l4kwqe->vlan_tag = csk->vlan_id;
3412                 l4kwqe->l2hdr_nbytes += 4;
3413         }
3414
3415         return dev->submit_kwqes(dev, wqes, 1);
3416 }
3417
3418 static int cnic_cm_update_pg(struct cnic_sock *csk)
3419 {
3420         struct cnic_dev *dev = csk->dev;
3421         struct l4_kwq_update_pg *l4kwqe;
3422         struct kwqe *wqes[1];
3423
3424         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3425         memset(l4kwqe, 0, sizeof(*l4kwqe));
3426         wqes[0] = (struct kwqe *) l4kwqe;
3427
3428         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3429         l4kwqe->flags =
3430                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3431         l4kwqe->pg_cid = csk->pg_cid;
3432
3433         l4kwqe->da0 = csk->ha[0];
3434         l4kwqe->da1 = csk->ha[1];
3435         l4kwqe->da2 = csk->ha[2];
3436         l4kwqe->da3 = csk->ha[3];
3437         l4kwqe->da4 = csk->ha[4];
3438         l4kwqe->da5 = csk->ha[5];
3439
3440         l4kwqe->pg_host_opaque = csk->l5_cid;
3441         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3442
3443         return dev->submit_kwqes(dev, wqes, 1);
3444 }
3445
3446 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3447 {
3448         struct cnic_dev *dev = csk->dev;
3449         struct l4_kwq_upload *l4kwqe;
3450         struct kwqe *wqes[1];
3451
3452         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3453         memset(l4kwqe, 0, sizeof(*l4kwqe));
3454         wqes[0] = (struct kwqe *) l4kwqe;
3455
3456         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3457         l4kwqe->flags =
3458                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3459         l4kwqe->cid = csk->pg_cid;
3460
3461         return dev->submit_kwqes(dev, wqes, 1);
3462 }
3463
3464 static int cnic_cm_conn_req(struct cnic_sock *csk)
3465 {
3466         struct cnic_dev *dev = csk->dev;
3467         struct l4_kwq_connect_req1 *l4kwqe1;
3468         struct l4_kwq_connect_req2 *l4kwqe2;
3469         struct l4_kwq_connect_req3 *l4kwqe3;
3470         struct kwqe *wqes[3];
3471         u8 tcp_flags = 0;
3472         int num_wqes = 2;
3473
3474         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3475         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3476         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3477         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3478         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3479         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3480
3481         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3482         l4kwqe3->flags =
3483                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3484         l4kwqe3->ka_timeout = csk->ka_timeout;
3485         l4kwqe3->ka_interval = csk->ka_interval;
3486         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3487         l4kwqe3->tos = csk->tos;
3488         l4kwqe3->ttl = csk->ttl;
3489         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3490         l4kwqe3->pmtu = csk->mtu;
3491         l4kwqe3->rcv_buf = csk->rcv_buf;
3492         l4kwqe3->snd_buf = csk->snd_buf;
3493         l4kwqe3->seed = csk->seed;
3494
3495         wqes[0] = (struct kwqe *) l4kwqe1;
3496         if (test_bit(SK_F_IPV6, &csk->flags)) {
3497                 wqes[1] = (struct kwqe *) l4kwqe2;
3498                 wqes[2] = (struct kwqe *) l4kwqe3;
3499                 num_wqes = 3;
3500
3501                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3502                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3503                 l4kwqe2->flags =
3504                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3505                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3506                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3507                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3508                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3509                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3510                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3511                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3512                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3513                                sizeof(struct tcphdr);
3514         } else {
3515                 wqes[1] = (struct kwqe *) l4kwqe3;
3516                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3517                                sizeof(struct tcphdr);
3518         }
3519
3520         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3521         l4kwqe1->flags =
3522                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3523                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3524         l4kwqe1->cid = csk->cid;
3525         l4kwqe1->pg_cid = csk->pg_cid;
3526         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3527         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3528         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3529         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3530         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3531                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3532         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3533                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3534         if (csk->tcp_flags & SK_TCP_NAGLE)
3535                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3536         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3537                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3538         if (csk->tcp_flags & SK_TCP_SACK)
3539                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3540         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3541                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3542
3543         l4kwqe1->tcp_flags = tcp_flags;
3544
3545         return dev->submit_kwqes(dev, wqes, num_wqes);
3546 }
3547
3548 static int cnic_cm_close_req(struct cnic_sock *csk)
3549 {
3550         struct cnic_dev *dev = csk->dev;
3551         struct l4_kwq_close_req *l4kwqe;
3552         struct kwqe *wqes[1];
3553
3554         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3555         memset(l4kwqe, 0, sizeof(*l4kwqe));
3556         wqes[0] = (struct kwqe *) l4kwqe;
3557
3558         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3559         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3560         l4kwqe->cid = csk->cid;
3561
3562         return dev->submit_kwqes(dev, wqes, 1);
3563 }
3564
3565 static int cnic_cm_abort_req(struct cnic_sock *csk)
3566 {
3567         struct cnic_dev *dev = csk->dev;
3568         struct l4_kwq_reset_req *l4kwqe;
3569         struct kwqe *wqes[1];
3570
3571         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3572         memset(l4kwqe, 0, sizeof(*l4kwqe));
3573         wqes[0] = (struct kwqe *) l4kwqe;
3574
3575         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3576         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3577         l4kwqe->cid = csk->cid;
3578
3579         return dev->submit_kwqes(dev, wqes, 1);
3580 }
3581
3582 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3583                           u32 l5_cid, struct cnic_sock **csk, void *context)
3584 {
3585         struct cnic_local *cp = dev->cnic_priv;
3586         struct cnic_sock *csk1;
3587
3588         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3589                 return -EINVAL;
3590
3591         if (cp->ctx_tbl) {
3592                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3593
3594                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3595                         return -EAGAIN;
3596         }
3597
3598         csk1 = &cp->csk_tbl[l5_cid];
3599         if (atomic_read(&csk1->ref_count))
3600                 return -EAGAIN;
3601
3602         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3603                 return -EBUSY;
3604
3605         csk1->dev = dev;
3606         csk1->cid = cid;
3607         csk1->l5_cid = l5_cid;
3608         csk1->ulp_type = ulp_type;
3609         csk1->context = context;
3610
3611         csk1->ka_timeout = DEF_KA_TIMEOUT;
3612         csk1->ka_interval = DEF_KA_INTERVAL;
3613         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3614         csk1->tos = DEF_TOS;
3615         csk1->ttl = DEF_TTL;
3616         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3617         csk1->rcv_buf = DEF_RCV_BUF;
3618         csk1->snd_buf = DEF_SND_BUF;
3619         csk1->seed = DEF_SEED;
3620         csk1->tcp_flags = 0;
3621
3622         *csk = csk1;
3623         return 0;
3624 }
3625
3626 static void cnic_cm_cleanup(struct cnic_sock *csk)
3627 {
3628         if (csk->src_port) {
3629                 struct cnic_dev *dev = csk->dev;
3630                 struct cnic_local *cp = dev->cnic_priv;
3631
3632                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3633                 csk->src_port = 0;
3634         }
3635 }
3636
3637 static void cnic_close_conn(struct cnic_sock *csk)
3638 {
3639         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3640                 cnic_cm_upload_pg(csk);
3641                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3642         }
3643         cnic_cm_cleanup(csk);
3644 }
3645
3646 static int cnic_cm_destroy(struct cnic_sock *csk)
3647 {
3648         if (!cnic_in_use(csk))
3649                 return -EINVAL;
3650
3651         csk_hold(csk);
3652         clear_bit(SK_F_INUSE, &csk->flags);
3653         smp_mb__after_atomic();
3654         while (atomic_read(&csk->ref_count) != 1)
3655                 msleep(1);
3656         cnic_cm_cleanup(csk);
3657
3658         csk->flags = 0;
3659         csk_put(csk);
3660         return 0;
3661 }
3662
3663 static inline u16 cnic_get_vlan(struct net_device *dev,
3664                                 struct net_device **vlan_dev)
3665 {
3666         if (is_vlan_dev(dev)) {
3667                 *vlan_dev = vlan_dev_real_dev(dev);
3668                 return vlan_dev_vlan_id(dev);
3669         }
3670         *vlan_dev = dev;
3671         return 0;
3672 }
3673
3674 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3675                              struct dst_entry **dst)
3676 {
3677 #if defined(CONFIG_INET)
3678         struct rtable *rt;
3679
3680         rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3681         if (!IS_ERR(rt)) {
3682                 *dst = &rt->dst;
3683                 return 0;
3684         }
3685         return PTR_ERR(rt);
3686 #else
3687         return -ENETUNREACH;
3688 #endif
3689 }
3690
3691 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3692                              struct dst_entry **dst)
3693 {
3694 #if IS_ENABLED(CONFIG_IPV6)
3695         struct flowi6 fl6;
3696
3697         memset(&fl6, 0, sizeof(fl6));
3698         fl6.daddr = dst_addr->sin6_addr;
3699         if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3700                 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3701
3702         *dst = ip6_route_output(&init_net, NULL, &fl6);
3703         if ((*dst)->error) {
3704                 dst_release(*dst);
3705                 *dst = NULL;
3706                 return -ENETUNREACH;
3707         } else
3708                 return 0;
3709 #endif
3710
3711         return -ENETUNREACH;
3712 }
3713
3714 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3715                                            int ulp_type)
3716 {
3717         struct cnic_dev *dev = NULL;
3718         struct dst_entry *dst;
3719         struct net_device *netdev = NULL;
3720         int err = -ENETUNREACH;
3721
3722         if (dst_addr->sin_family == AF_INET)
3723                 err = cnic_get_v4_route(dst_addr, &dst);
3724         else if (dst_addr->sin_family == AF_INET6) {
3725                 struct sockaddr_in6 *dst_addr6 =
3726                         (struct sockaddr_in6 *) dst_addr;
3727
3728                 err = cnic_get_v6_route(dst_addr6, &dst);
3729         } else
3730                 return NULL;
3731
3732         if (err)
3733                 return NULL;
3734
3735         if (!dst->dev)
3736                 goto done;
3737
3738         cnic_get_vlan(dst->dev, &netdev);
3739
3740         dev = cnic_from_netdev(netdev);
3741
3742 done:
3743         dst_release(dst);
3744         if (dev)
3745                 cnic_put(dev);
3746         return dev;
3747 }
3748
3749 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3750 {
3751         struct cnic_dev *dev = csk->dev;
3752         struct cnic_local *cp = dev->cnic_priv;
3753
3754         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3755 }
3756
3757 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3758 {
3759         struct cnic_dev *dev = csk->dev;
3760         struct cnic_local *cp = dev->cnic_priv;
3761         int is_v6, rc = 0;
3762         struct dst_entry *dst = NULL;
3763         struct net_device *realdev;
3764         __be16 local_port;
3765         u32 port_id;
3766
3767         if (saddr->local.v6.sin6_family == AF_INET6 &&
3768             saddr->remote.v6.sin6_family == AF_INET6)
3769                 is_v6 = 1;
3770         else if (saddr->local.v4.sin_family == AF_INET &&
3771                  saddr->remote.v4.sin_family == AF_INET)
3772                 is_v6 = 0;
3773         else
3774                 return -EINVAL;
3775
3776         clear_bit(SK_F_IPV6, &csk->flags);
3777
3778         if (is_v6) {
3779                 set_bit(SK_F_IPV6, &csk->flags);
3780                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3781
3782                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3783                        sizeof(struct in6_addr));
3784                 csk->dst_port = saddr->remote.v6.sin6_port;
3785                 local_port = saddr->local.v6.sin6_port;
3786
3787         } else {
3788                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3789
3790                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3791                 csk->dst_port = saddr->remote.v4.sin_port;
3792                 local_port = saddr->local.v4.sin_port;
3793         }
3794
3795         csk->vlan_id = 0;
3796         csk->mtu = dev->netdev->mtu;
3797         if (dst && dst->dev) {
3798                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3799                 if (realdev == dev->netdev) {
3800                         csk->vlan_id = vlan;
3801                         csk->mtu = dst_mtu(dst);
3802                 }
3803         }
3804
3805         port_id = be16_to_cpu(local_port);
3806         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3807             port_id < CNIC_LOCAL_PORT_MAX) {
3808                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3809                         port_id = 0;
3810         } else
3811                 port_id = 0;
3812
3813         if (!port_id) {
3814                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3815                 if (port_id == -1) {
3816                         rc = -ENOMEM;
3817                         goto err_out;
3818                 }
3819                 local_port = cpu_to_be16(port_id);
3820         }
3821         csk->src_port = local_port;
3822
3823 err_out:
3824         dst_release(dst);
3825         return rc;
3826 }
3827
3828 static void cnic_init_csk_state(struct cnic_sock *csk)
3829 {
3830         csk->state = 0;
3831         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3832         clear_bit(SK_F_CLOSING, &csk->flags);
3833 }
3834
3835 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3836 {
3837         struct cnic_local *cp = csk->dev->cnic_priv;
3838         int err = 0;
3839
3840         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3841                 return -EOPNOTSUPP;
3842
3843         if (!cnic_in_use(csk))
3844                 return -EINVAL;
3845
3846         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3847                 return -EINVAL;
3848
3849         cnic_init_csk_state(csk);
3850
3851         err = cnic_get_route(csk, saddr);
3852         if (err)
3853                 goto err_out;
3854
3855         err = cnic_resolve_addr(csk, saddr);
3856         if (!err)
3857                 return 0;
3858
3859 err_out:
3860         clear_bit(SK_F_CONNECT_START, &csk->flags);
3861         return err;
3862 }
3863
3864 static int cnic_cm_abort(struct cnic_sock *csk)
3865 {
3866         struct cnic_local *cp = csk->dev->cnic_priv;
3867         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3868
3869         if (!cnic_in_use(csk))
3870                 return -EINVAL;
3871
3872         if (cnic_abort_prep(csk))
3873                 return cnic_cm_abort_req(csk);
3874
3875         /* Getting here means that we haven't started connect, or
3876          * connect was not successful, or it has been reset by the target.
3877          */
3878
3879         cp->close_conn(csk, opcode);
3880         if (csk->state != opcode) {
3881                 /* Wait for remote reset sequence to complete */
3882                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3883                         msleep(1);
3884
3885                 return -EALREADY;
3886         }
3887
3888         return 0;
3889 }
3890
3891 static int cnic_cm_close(struct cnic_sock *csk)
3892 {
3893         if (!cnic_in_use(csk))
3894                 return -EINVAL;
3895
3896         if (cnic_close_prep(csk)) {
3897                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3898                 return cnic_cm_close_req(csk);
3899         } else {
3900                 /* Wait for remote reset sequence to complete */
3901                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3902                         msleep(1);
3903
3904                 return -EALREADY;
3905         }
3906         return 0;
3907 }
3908
3909 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3910                            u8 opcode)
3911 {
3912         struct cnic_ulp_ops *ulp_ops;
3913         int ulp_type = csk->ulp_type;
3914
3915         rcu_read_lock();
3916         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3917         if (ulp_ops) {
3918                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3919                         ulp_ops->cm_connect_complete(csk);
3920                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3921                         ulp_ops->cm_close_complete(csk);
3922                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3923                         ulp_ops->cm_remote_abort(csk);
3924                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3925                         ulp_ops->cm_abort_complete(csk);
3926                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3927                         ulp_ops->cm_remote_close(csk);
3928         }
3929         rcu_read_unlock();
3930 }
3931
3932 static int cnic_cm_set_pg(struct cnic_sock *csk)
3933 {
3934         if (cnic_offld_prep(csk)) {
3935                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3936                         cnic_cm_update_pg(csk);
3937                 else
3938                         cnic_cm_offload_pg(csk);
3939         }
3940         return 0;
3941 }
3942
3943 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3944 {
3945         struct cnic_local *cp = dev->cnic_priv;
3946         u32 l5_cid = kcqe->pg_host_opaque;
3947         u8 opcode = kcqe->op_code;
3948         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3949
3950         csk_hold(csk);
3951         if (!cnic_in_use(csk))
3952                 goto done;
3953
3954         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3955                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3956                 goto done;
3957         }
3958         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3959         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3960                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3961                 cnic_cm_upcall(cp, csk,
3962                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3963                 goto done;
3964         }
3965
3966         csk->pg_cid = kcqe->pg_cid;
3967         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3968         cnic_cm_conn_req(csk);
3969
3970 done:
3971         csk_put(csk);
3972 }
3973
3974 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3975 {
3976         struct cnic_local *cp = dev->cnic_priv;
3977         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3978         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3979         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3980
3981         ctx->timestamp = jiffies;
3982         ctx->wait_cond = 1;
3983         wake_up(&ctx->waitq);
3984 }
3985
3986 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3987 {
3988         struct cnic_local *cp = dev->cnic_priv;
3989         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3990         u8 opcode = l4kcqe->op_code;
3991         u32 l5_cid;
3992         struct cnic_sock *csk;
3993
3994         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3995                 cnic_process_fcoe_term_conn(dev, kcqe);
3996                 return;
3997         }
3998         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3999             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
4000                 cnic_cm_process_offld_pg(dev, l4kcqe);
4001                 return;
4002         }
4003
4004         l5_cid = l4kcqe->conn_id;
4005         if (opcode & 0x80)
4006                 l5_cid = l4kcqe->cid;
4007         if (l5_cid >= MAX_CM_SK_TBL_SZ)
4008                 return;
4009
4010         csk = &cp->csk_tbl[l5_cid];
4011         csk_hold(csk);
4012
4013         if (!cnic_in_use(csk)) {
4014                 csk_put(csk);
4015                 return;
4016         }
4017
4018         switch (opcode) {
4019         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
4020                 if (l4kcqe->status != 0) {
4021                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4022                         cnic_cm_upcall(cp, csk,
4023                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
4024                 }
4025                 break;
4026         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
4027                 if (l4kcqe->status == 0)
4028                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
4029                 else if (l4kcqe->status ==
4030                          L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4031                         set_bit(SK_F_HW_ERR, &csk->flags);
4032
4033                 smp_mb__before_atomic();
4034                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4035                 cnic_cm_upcall(cp, csk, opcode);
4036                 break;
4037
4038         case L5CM_RAMROD_CMD_ID_CLOSE: {
4039                 struct iscsi_kcqe *l5kcqe = (struct iscsi_kcqe *) kcqe;
4040
4041                 if (l4kcqe->status != 0 || l5kcqe->completion_status != 0) {
4042                         netdev_warn(dev->netdev, "RAMROD CLOSE compl with status 0x%x completion status 0x%x\n",
4043                                     l4kcqe->status, l5kcqe->completion_status);
4044                         opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
4045                         /* Fall through */
4046                 } else {
4047                         break;
4048                 }
4049         }
4050         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4051         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4052         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4053         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4054         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4055                 if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4056                         set_bit(SK_F_HW_ERR, &csk->flags);
4057
4058                 cp->close_conn(csk, opcode);
4059                 break;
4060
4061         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
4062                 /* after we already sent CLOSE_REQ */
4063                 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
4064                     !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
4065                     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
4066                         cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
4067                 else
4068                         cnic_cm_upcall(cp, csk, opcode);
4069                 break;
4070         }
4071         csk_put(csk);
4072 }
4073
4074 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
4075 {
4076         struct cnic_dev *dev = data;
4077         int i;
4078
4079         for (i = 0; i < num; i++)
4080                 cnic_cm_process_kcqe(dev, kcqe[i]);
4081 }
4082
4083 static struct cnic_ulp_ops cm_ulp_ops = {
4084         .indicate_kcqes         = cnic_cm_indicate_kcqe,
4085 };
4086
4087 static void cnic_cm_free_mem(struct cnic_dev *dev)
4088 {
4089         struct cnic_local *cp = dev->cnic_priv;
4090
4091         kvfree(cp->csk_tbl);
4092         cp->csk_tbl = NULL;
4093         cnic_free_id_tbl(&cp->csk_port_tbl);
4094 }
4095
4096 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
4097 {
4098         struct cnic_local *cp = dev->cnic_priv;
4099         u32 port_id;
4100
4101         cp->csk_tbl = kvcalloc(MAX_CM_SK_TBL_SZ, sizeof(struct cnic_sock),
4102                                GFP_KERNEL);
4103         if (!cp->csk_tbl)
4104                 return -ENOMEM;
4105
4106         port_id = prandom_u32();
4107         port_id %= CNIC_LOCAL_PORT_RANGE;
4108         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4109                              CNIC_LOCAL_PORT_MIN, port_id)) {
4110                 cnic_cm_free_mem(dev);
4111                 return -ENOMEM;
4112         }
4113         return 0;
4114 }
4115
4116 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
4117 {
4118         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
4119                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
4120                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
4121                 csk->state = opcode;
4122         }
4123
4124         /* 1. If event opcode matches the expected event in csk->state
4125          * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
4126          *    event
4127          * 3. If the expected event is 0, meaning the connection was never
4128          *    never established, we accept the opcode from cm_abort.
4129          */
4130         if (opcode == csk->state || csk->state == 0 ||
4131             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
4132             csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4133                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
4134                         if (csk->state == 0)
4135                                 csk->state = opcode;
4136                         return 1;
4137                 }
4138         }
4139         return 0;
4140 }
4141
4142 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
4143 {
4144         struct cnic_dev *dev = csk->dev;
4145         struct cnic_local *cp = dev->cnic_priv;
4146
4147         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
4148                 cnic_cm_upcall(cp, csk, opcode);
4149                 return;
4150         }
4151
4152         clear_bit(SK_F_CONNECT_START, &csk->flags);
4153         cnic_close_conn(csk);
4154         csk->state = opcode;
4155         cnic_cm_upcall(cp, csk, opcode);
4156 }
4157
4158 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
4159 {
4160 }
4161
4162 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
4163 {
4164         u32 seed;
4165
4166         seed = prandom_u32();
4167         cnic_ctx_wr(dev, 45, 0, seed);
4168         return 0;
4169 }
4170
4171 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
4172 {
4173         struct cnic_dev *dev = csk->dev;
4174         struct cnic_local *cp = dev->cnic_priv;
4175         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
4176         union l5cm_specific_data l5_data;
4177         u32 cmd = 0;
4178         int close_complete = 0;
4179
4180         switch (opcode) {
4181         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4182         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4183         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4184                 if (cnic_ready_to_close(csk, opcode)) {
4185                         if (test_bit(SK_F_HW_ERR, &csk->flags))
4186                                 close_complete = 1;
4187                         else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4188                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
4189                         else
4190                                 close_complete = 1;
4191                 }
4192                 break;
4193         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4194                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
4195                 break;
4196         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4197                 close_complete = 1;
4198                 break;
4199         }
4200         if (cmd) {
4201                 memset(&l5_data, 0, sizeof(l5_data));
4202
4203                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
4204                                     &l5_data);
4205         } else if (close_complete) {
4206                 ctx->timestamp = jiffies;
4207                 cnic_close_conn(csk);
4208                 cnic_cm_upcall(cp, csk, csk->state);
4209         }
4210 }
4211
4212 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
4213 {
4214         struct cnic_local *cp = dev->cnic_priv;
4215
4216         if (!cp->ctx_tbl)
4217                 return;
4218
4219         if (!netif_running(dev->netdev))
4220                 return;
4221
4222         cnic_bnx2x_delete_wait(dev, 0);
4223
4224         cancel_delayed_work(&cp->delete_task);
4225         flush_workqueue(cnic_wq);
4226
4227         if (atomic_read(&cp->iscsi_conn) != 0)
4228                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
4229                             atomic_read(&cp->iscsi_conn));
4230 }
4231
4232 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
4233 {
4234         struct bnx2x *bp = netdev_priv(dev->netdev);
4235         u32 pfid = bp->pfid;
4236         u32 port = BP_PORT(bp);
4237
4238         cnic_init_bnx2x_mac(dev);
4239         cnic_bnx2x_set_tcp_options(dev, 0, 1);
4240
4241         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4242                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4243
4244         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4245                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4246         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4247                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4248                 DEF_MAX_DA_COUNT);
4249
4250         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4251                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4252         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4253                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4254         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4255                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4256         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4257                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4258
4259         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4260                 DEF_MAX_CWND);
4261         return 0;
4262 }
4263
4264 static void cnic_delete_task(struct work_struct *work)
4265 {
4266         struct cnic_local *cp;
4267         struct cnic_dev *dev;
4268         u32 i;
4269         int need_resched = 0;
4270
4271         cp = container_of(work, struct cnic_local, delete_task.work);
4272         dev = cp->dev;
4273
4274         if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4275                 struct drv_ctl_info info;
4276
4277                 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4278
4279                 memset(&info, 0, sizeof(struct drv_ctl_info));
4280                 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4281                 cp->ethdev->drv_ctl(dev->netdev, &info);
4282         }
4283
4284         for (i = 0; i < cp->max_cid_space; i++) {
4285                 struct cnic_context *ctx = &cp->ctx_tbl[i];
4286                 int err;
4287
4288                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4289                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4290                         continue;
4291
4292                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4293                         need_resched = 1;
4294                         continue;
4295                 }
4296
4297                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4298                         continue;
4299
4300                 err = cnic_bnx2x_destroy_ramrod(dev, i);
4301
4302                 cnic_free_bnx2x_conn_resc(dev, i);
4303                 if (!err) {
4304                         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4305                                 atomic_dec(&cp->iscsi_conn);
4306
4307                         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4308                 }
4309         }
4310
4311         if (need_resched)
4312                 queue_delayed_work(cnic_wq, &cp->delete_task,
4313                                    msecs_to_jiffies(10));
4314
4315 }
4316
4317 static int cnic_cm_open(struct cnic_dev *dev)
4318 {
4319         struct cnic_local *cp = dev->cnic_priv;
4320         int err;
4321
4322         err = cnic_cm_alloc_mem(dev);
4323         if (err)
4324                 return err;
4325
4326         err = cp->start_cm(dev);
4327
4328         if (err)
4329                 goto err_out;
4330
4331         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4332
4333         dev->cm_create = cnic_cm_create;
4334         dev->cm_destroy = cnic_cm_destroy;
4335         dev->cm_connect = cnic_cm_connect;
4336         dev->cm_abort = cnic_cm_abort;
4337         dev->cm_close = cnic_cm_close;
4338         dev->cm_select_dev = cnic_cm_select_dev;
4339
4340         cp->ulp_handle[CNIC_ULP_L4] = dev;
4341         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4342         return 0;
4343
4344 err_out:
4345         cnic_cm_free_mem(dev);
4346         return err;
4347 }
4348
4349 static int cnic_cm_shutdown(struct cnic_dev *dev)
4350 {
4351         struct cnic_local *cp = dev->cnic_priv;
4352         int i;
4353
4354         if (!cp->csk_tbl)
4355                 return 0;
4356
4357         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4358                 struct cnic_sock *csk = &cp->csk_tbl[i];
4359
4360                 clear_bit(SK_F_INUSE, &csk->flags);
4361                 cnic_cm_cleanup(csk);
4362         }
4363         cnic_cm_free_mem(dev);
4364
4365         return 0;
4366 }
4367
4368 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4369 {
4370         u32 cid_addr;
4371         int i;
4372
4373         cid_addr = GET_CID_ADDR(cid);
4374
4375         for (i = 0; i < CTX_SIZE; i += 4)
4376                 cnic_ctx_wr(dev, cid_addr, i, 0);
4377 }
4378
4379 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4380 {
4381         struct cnic_local *cp = dev->cnic_priv;
4382         int ret = 0, i;
4383         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4384
4385         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4386                 return 0;
4387
4388         for (i = 0; i < cp->ctx_blks; i++) {
4389                 int j;
4390                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4391                 u32 val;
4392
4393                 memset(cp->ctx_arr[i].ctx, 0, CNIC_PAGE_SIZE);
4394
4395                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4396                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4397                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4398                         (u64) cp->ctx_arr[i].mapping >> 32);
4399                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4400                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4401                 for (j = 0; j < 10; j++) {
4402
4403                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4404                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4405                                 break;
4406                         udelay(5);
4407                 }
4408                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4409                         ret = -EBUSY;
4410                         break;
4411                 }
4412         }
4413         return ret;
4414 }
4415
4416 static void cnic_free_irq(struct cnic_dev *dev)
4417 {
4418         struct cnic_local *cp = dev->cnic_priv;
4419         struct cnic_eth_dev *ethdev = cp->ethdev;
4420
4421         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4422                 cp->disable_int_sync(dev);
4423                 tasklet_kill(&cp->cnic_irq_task);
4424                 free_irq(ethdev->irq_arr[0].vector, dev);
4425         }
4426 }
4427
4428 static int cnic_request_irq(struct cnic_dev *dev)
4429 {
4430         struct cnic_local *cp = dev->cnic_priv;
4431         struct cnic_eth_dev *ethdev = cp->ethdev;
4432         int err;
4433
4434         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4435         if (err)
4436                 tasklet_disable(&cp->cnic_irq_task);
4437
4438         return err;
4439 }
4440
4441 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4442 {
4443         struct cnic_local *cp = dev->cnic_priv;
4444         struct cnic_eth_dev *ethdev = cp->ethdev;
4445
4446         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4447                 int err, i = 0;
4448                 int sblk_num = cp->status_blk_num;
4449                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4450                            BNX2_HC_SB_CONFIG_1;
4451
4452                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4453
4454                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4455                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4456                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4457
4458                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4459                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4460                              (unsigned long) dev);
4461                 err = cnic_request_irq(dev);
4462                 if (err)
4463                         return err;
4464
4465                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4466                        i < 10) {
4467                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4468                                 1 << (11 + sblk_num));
4469                         udelay(10);
4470                         i++;
4471                         barrier();
4472                 }
4473                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4474                         cnic_free_irq(dev);
4475                         goto failed;
4476                 }
4477
4478         } else {
4479                 struct status_block *sblk = cp->status_blk.gen;
4480                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4481                 int i = 0;
4482
4483                 while (sblk->status_completion_producer_index && i < 10) {
4484                         CNIC_WR(dev, BNX2_HC_COMMAND,
4485                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4486                         udelay(10);
4487                         i++;
4488                         barrier();
4489                 }
4490                 if (sblk->status_completion_producer_index)
4491                         goto failed;
4492
4493         }
4494         return 0;
4495
4496 failed:
4497         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4498         return -EBUSY;
4499 }
4500
4501 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4502 {
4503         struct cnic_local *cp = dev->cnic_priv;
4504         struct cnic_eth_dev *ethdev = cp->ethdev;
4505
4506         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4507                 return;
4508
4509         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4510                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4511 }
4512
4513 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4514 {
4515         struct cnic_local *cp = dev->cnic_priv;
4516         struct cnic_eth_dev *ethdev = cp->ethdev;
4517
4518         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4519                 return;
4520
4521         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4522                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4523         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4524         synchronize_irq(ethdev->irq_arr[0].vector);
4525 }
4526
4527 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4528 {
4529         struct cnic_local *cp = dev->cnic_priv;
4530         struct cnic_eth_dev *ethdev = cp->ethdev;
4531         struct cnic_uio_dev *udev = cp->udev;
4532         u32 cid_addr, tx_cid, sb_id;
4533         u32 val, offset0, offset1, offset2, offset3;
4534         int i;
4535         struct bnx2_tx_bd *txbd;
4536         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4537         struct status_block *s_blk = cp->status_blk.gen;
4538
4539         sb_id = cp->status_blk_num;
4540         tx_cid = 20;
4541         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4542         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4543                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4544
4545                 tx_cid = TX_TSS_CID + sb_id - 1;
4546                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4547                         (TX_TSS_CID << 7));
4548                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4549         }
4550         cp->tx_cons = *cp->tx_cons_ptr;
4551
4552         cid_addr = GET_CID_ADDR(tx_cid);
4553         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
4554                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4555
4556                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4557                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4558
4559                 offset0 = BNX2_L2CTX_TYPE_XI;
4560                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4561                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4562                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4563         } else {
4564                 cnic_init_context(dev, tx_cid);
4565                 cnic_init_context(dev, tx_cid + 1);
4566
4567                 offset0 = BNX2_L2CTX_TYPE;
4568                 offset1 = BNX2_L2CTX_CMD_TYPE;
4569                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4570                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4571         }
4572         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4573         cnic_ctx_wr(dev, cid_addr, offset0, val);
4574
4575         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4576         cnic_ctx_wr(dev, cid_addr, offset1, val);
4577
4578         txbd = udev->l2_ring;
4579
4580         buf_map = udev->l2_buf_map;
4581         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i++, txbd++) {
4582                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4583                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4584         }
4585         val = (u64) ring_map >> 32;
4586         cnic_ctx_wr(dev, cid_addr, offset2, val);
4587         txbd->tx_bd_haddr_hi = val;
4588
4589         val = (u64) ring_map & 0xffffffff;
4590         cnic_ctx_wr(dev, cid_addr, offset3, val);
4591         txbd->tx_bd_haddr_lo = val;
4592 }
4593
4594 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4595 {
4596         struct cnic_local *cp = dev->cnic_priv;
4597         struct cnic_eth_dev *ethdev = cp->ethdev;
4598         struct cnic_uio_dev *udev = cp->udev;
4599         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4600         int i;
4601         struct bnx2_rx_bd *rxbd;
4602         struct status_block *s_blk = cp->status_blk.gen;
4603         dma_addr_t ring_map = udev->l2_ring_map;
4604
4605         sb_id = cp->status_blk_num;
4606         cnic_init_context(dev, 2);
4607         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4608         coal_reg = BNX2_HC_COMMAND;
4609         coal_val = CNIC_RD(dev, coal_reg);
4610         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4611                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4612
4613                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4614                 coal_reg = BNX2_HC_COALESCE_NOW;
4615                 coal_val = 1 << (11 + sb_id);
4616         }
4617         i = 0;
4618         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4619                 CNIC_WR(dev, coal_reg, coal_val);
4620                 udelay(10);
4621                 i++;
4622                 barrier();
4623         }
4624         cp->rx_cons = *cp->rx_cons_ptr;
4625
4626         cid_addr = GET_CID_ADDR(2);
4627         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4628               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4629         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4630
4631         if (sb_id == 0)
4632                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4633         else
4634                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4635         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4636
4637         rxbd = udev->l2_ring + CNIC_PAGE_SIZE;
4638         for (i = 0; i < BNX2_MAX_RX_DESC_CNT; i++, rxbd++) {
4639                 dma_addr_t buf_map;
4640                 int n = (i % cp->l2_rx_ring_size) + 1;
4641
4642                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4643                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4644                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4645                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4646                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4647         }
4648         val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
4649         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4650         rxbd->rx_bd_haddr_hi = val;
4651
4652         val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
4653         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4654         rxbd->rx_bd_haddr_lo = val;
4655
4656         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4657         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4658 }
4659
4660 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4661 {
4662         struct kwqe *wqes[1], l2kwqe;
4663
4664         memset(&l2kwqe, 0, sizeof(l2kwqe));
4665         wqes[0] = &l2kwqe;
4666         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4667                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4668                                KWQE_OPCODE_SHIFT) | 2;
4669         dev->submit_kwqes(dev, wqes, 1);
4670 }
4671
4672 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4673 {
4674         struct cnic_local *cp = dev->cnic_priv;
4675         u32 val;
4676
4677         val = cp->func << 2;
4678
4679         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4680
4681         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4682                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4683         dev->mac_addr[0] = (u8) (val >> 8);
4684         dev->mac_addr[1] = (u8) val;
4685
4686         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4687
4688         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4689                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4690         dev->mac_addr[2] = (u8) (val >> 24);
4691         dev->mac_addr[3] = (u8) (val >> 16);
4692         dev->mac_addr[4] = (u8) (val >> 8);
4693         dev->mac_addr[5] = (u8) val;
4694
4695         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4696
4697         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4698         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4699                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4700
4701         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4702         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4703         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4704 }
4705
4706 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4707 {
4708         struct cnic_local *cp = dev->cnic_priv;
4709         struct cnic_eth_dev *ethdev = cp->ethdev;
4710         struct status_block *sblk = cp->status_blk.gen;
4711         u32 val, kcq_cid_addr, kwq_cid_addr;
4712         int err;
4713
4714         cnic_set_bnx2_mac(dev);
4715
4716         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4717         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4718         if (CNIC_PAGE_BITS > 12)
4719                 val |= (12 - 8)  << 4;
4720         else
4721                 val |= (CNIC_PAGE_BITS - 8)  << 4;
4722
4723         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4724
4725         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4726         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4727         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4728
4729         err = cnic_setup_5709_context(dev, 1);
4730         if (err)
4731                 return err;
4732
4733         cnic_init_context(dev, KWQ_CID);
4734         cnic_init_context(dev, KCQ_CID);
4735
4736         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4737         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4738
4739         cp->max_kwq_idx = MAX_KWQ_IDX;
4740         cp->kwq_prod_idx = 0;
4741         cp->kwq_con_idx = 0;
4742         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4743
4744         if (BNX2_CHIP(cp) == BNX2_CHIP_5706 || BNX2_CHIP(cp) == BNX2_CHIP_5708)
4745                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4746         else
4747                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4748
4749         /* Initialize the kernel work queue context. */
4750         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4751               (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4752         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4753
4754         val = (CNIC_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4755         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4756
4757         val = ((CNIC_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4758         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4759
4760         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4761         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4762
4763         val = (u32) cp->kwq_info.pgtbl_map;
4764         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4765
4766         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4767         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4768
4769         cp->kcq1.sw_prod_idx = 0;
4770         cp->kcq1.hw_prod_idx_ptr =
4771                 &sblk->status_completion_producer_index;
4772
4773         cp->kcq1.status_idx_ptr = &sblk->status_idx;
4774
4775         /* Initialize the kernel complete queue context. */
4776         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4777               (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4778         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4779
4780         val = (CNIC_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4781         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4782
4783         val = ((CNIC_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4784         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4785
4786         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4787         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4788
4789         val = (u32) cp->kcq1.dma.pgtbl_map;
4790         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4791
4792         cp->int_num = 0;
4793         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4794                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4795                 u32 sb_id = cp->status_blk_num;
4796                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4797
4798                 cp->kcq1.hw_prod_idx_ptr =
4799                         &msblk->status_completion_producer_index;
4800                 cp->kcq1.status_idx_ptr = &msblk->status_idx;
4801                 cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
4802                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4803                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4804                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4805         }
4806
4807         /* Enable Commnad Scheduler notification when we write to the
4808          * host producer index of the kernel contexts. */
4809         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4810
4811         /* Enable Command Scheduler notification when we write to either
4812          * the Send Queue or Receive Queue producer indexes of the kernel
4813          * bypass contexts. */
4814         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4815         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4816
4817         /* Notify COM when the driver post an application buffer. */
4818         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4819
4820         /* Set the CP and COM doorbells.  These two processors polls the
4821          * doorbell for a non zero value before running.  This must be done
4822          * after setting up the kernel queue contexts. */
4823         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4824         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4825
4826         cnic_init_bnx2_tx_ring(dev);
4827         cnic_init_bnx2_rx_ring(dev);
4828
4829         err = cnic_init_bnx2_irq(dev);
4830         if (err) {
4831                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4832                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4833                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4834                 return err;
4835         }
4836
4837         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
4838
4839         return 0;
4840 }
4841
4842 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4843 {
4844         struct cnic_local *cp = dev->cnic_priv;
4845         struct cnic_eth_dev *ethdev = cp->ethdev;
4846         u32 start_offset = ethdev->ctx_tbl_offset;
4847         int i;
4848
4849         for (i = 0; i < cp->ctx_blks; i++) {
4850                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4851                 dma_addr_t map = ctx->mapping;
4852
4853                 if (cp->ctx_align) {
4854                         unsigned long mask = cp->ctx_align - 1;
4855
4856                         map = (map + mask) & ~mask;
4857                 }
4858
4859                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4860         }
4861 }
4862
4863 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4864 {
4865         struct cnic_local *cp = dev->cnic_priv;
4866         struct cnic_eth_dev *ethdev = cp->ethdev;
4867         int err = 0;
4868
4869         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4870                      (unsigned long) dev);
4871         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4872                 err = cnic_request_irq(dev);
4873
4874         return err;
4875 }
4876
4877 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4878                                                 u16 sb_id, u8 sb_index,
4879                                                 u8 disable)
4880 {
4881         struct bnx2x *bp = netdev_priv(dev->netdev);
4882
4883         u32 addr = BAR_CSTRORM_INTMEM +
4884                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4885                         offsetof(struct hc_status_block_data_e1x, index_data) +
4886                         sizeof(struct hc_index_data)*sb_index +
4887                         offsetof(struct hc_index_data, flags);
4888         u16 flags = CNIC_RD16(dev, addr);
4889         /* clear and set */
4890         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4891         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4892                   HC_INDEX_DATA_HC_ENABLED);
4893         CNIC_WR16(dev, addr, flags);
4894 }
4895
4896 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4897 {
4898         struct cnic_local *cp = dev->cnic_priv;
4899         struct bnx2x *bp = netdev_priv(dev->netdev);
4900         u8 sb_id = cp->status_blk_num;
4901
4902         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4903                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4904                         offsetof(struct hc_status_block_data_e1x, index_data) +
4905                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4906                         offsetof(struct hc_index_data, timeout), 64 / 4);
4907         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4908 }
4909
4910 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4911 {
4912 }
4913
4914 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4915                                     struct client_init_ramrod_data *data)
4916 {
4917         struct cnic_local *cp = dev->cnic_priv;
4918         struct bnx2x *bp = netdev_priv(dev->netdev);
4919         struct cnic_uio_dev *udev = cp->udev;
4920         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4921         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4922         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4923         int i;
4924         u32 cli = cp->ethdev->iscsi_l2_client_id;
4925         u32 val;
4926
4927         memset(txbd, 0, CNIC_PAGE_SIZE);
4928
4929         buf_map = udev->l2_buf_map;
4930         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4931                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4932                 struct eth_tx_parse_bd_e1x *pbd_e1x =
4933                         &((txbd + 1)->parse_bd_e1x);
4934                 struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2);
4935                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4936
4937                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4938                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4939                 reg_bd->addr_hi = start_bd->addr_hi;
4940                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4941                 start_bd->nbytes = cpu_to_le16(0x10);
4942                 start_bd->nbd = cpu_to_le16(3);
4943                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4944                 start_bd->general_data &= ~ETH_TX_START_BD_PARSE_NBDS;
4945                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4946
4947                 if (BNX2X_CHIP_IS_E2_PLUS(bp))
4948                         pbd_e2->parsing_data = (UNICAST_ADDRESS <<
4949                                 ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT);
4950                 else
4951                         pbd_e1x->global_data = (UNICAST_ADDRESS <<
4952                                 ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT);
4953         }
4954
4955         val = (u64) ring_map >> 32;
4956         txbd->next_bd.addr_hi = cpu_to_le32(val);
4957
4958         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4959
4960         val = (u64) ring_map & 0xffffffff;
4961         txbd->next_bd.addr_lo = cpu_to_le32(val);
4962
4963         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4964
4965         /* Other ramrod params */
4966         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4967         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4968
4969         /* reset xstorm per client statistics */
4970         if (cli < MAX_STAT_COUNTER_ID) {
4971                 data->general.statistics_zero_flg = 1;
4972                 data->general.statistics_en_flg = 1;
4973                 data->general.statistics_counter_id = cli;
4974         }
4975
4976         cp->tx_cons_ptr =
4977                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4978 }
4979
4980 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4981                                     struct client_init_ramrod_data *data)
4982 {
4983         struct cnic_local *cp = dev->cnic_priv;
4984         struct bnx2x *bp = netdev_priv(dev->netdev);
4985         struct cnic_uio_dev *udev = cp->udev;
4986         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4987                                 CNIC_PAGE_SIZE);
4988         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4989                                 (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
4990         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4991         int i;
4992         u32 cli = cp->ethdev->iscsi_l2_client_id;
4993         int cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
4994         u32 val;
4995         dma_addr_t ring_map = udev->l2_ring_map;
4996
4997         /* General data */
4998         data->general.client_id = cli;
4999         data->general.activate_flg = 1;
5000         data->general.sp_client_id = cli;
5001         data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
5002         data->general.func_id = bp->pfid;
5003
5004         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
5005                 dma_addr_t buf_map;
5006                 int n = (i % cp->l2_rx_ring_size) + 1;
5007
5008                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
5009                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
5010                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
5011         }
5012
5013         val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
5014         rxbd->addr_hi = cpu_to_le32(val);
5015         data->rx.bd_page_base.hi = cpu_to_le32(val);
5016
5017         val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
5018         rxbd->addr_lo = cpu_to_le32(val);
5019         data->rx.bd_page_base.lo = cpu_to_le32(val);
5020
5021         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
5022         val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) >> 32;
5023         rxcqe->addr_hi = cpu_to_le32(val);
5024         data->rx.cqe_page_base.hi = cpu_to_le32(val);
5025
5026         val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) & 0xffffffff;
5027         rxcqe->addr_lo = cpu_to_le32(val);
5028         data->rx.cqe_page_base.lo = cpu_to_le32(val);
5029
5030         /* Other ramrod params */
5031         data->rx.client_qzone_id = cl_qzone_id;
5032         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
5033         data->rx.status_block_id = BNX2X_DEF_SB_ID;
5034
5035         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
5036
5037         data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
5038         data->rx.outer_vlan_removal_enable_flg = 1;
5039         data->rx.silent_vlan_removal_flg = 1;
5040         data->rx.silent_vlan_value = 0;
5041         data->rx.silent_vlan_mask = 0xffff;
5042
5043         cp->rx_cons_ptr =
5044                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
5045         cp->rx_cons = *cp->rx_cons_ptr;
5046 }
5047
5048 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
5049 {
5050         struct cnic_local *cp = dev->cnic_priv;
5051         struct bnx2x *bp = netdev_priv(dev->netdev);
5052         u32 pfid = bp->pfid;
5053
5054         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
5055                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
5056         cp->kcq1.sw_prod_idx = 0;
5057
5058         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5059                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5060
5061                 cp->kcq1.hw_prod_idx_ptr =
5062                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5063                 cp->kcq1.status_idx_ptr =
5064                         &sb->sb.running_index[SM_RX_ID];
5065         } else {
5066                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
5067
5068                 cp->kcq1.hw_prod_idx_ptr =
5069                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5070                 cp->kcq1.status_idx_ptr =
5071                         &sb->sb.running_index[SM_RX_ID];
5072         }
5073
5074         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5075                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5076
5077                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
5078                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
5079                 cp->kcq2.sw_prod_idx = 0;
5080                 cp->kcq2.hw_prod_idx_ptr =
5081                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
5082                 cp->kcq2.status_idx_ptr =
5083                         &sb->sb.running_index[SM_RX_ID];
5084         }
5085 }
5086
5087 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
5088 {
5089         struct cnic_local *cp = dev->cnic_priv;
5090         struct bnx2x *bp = netdev_priv(dev->netdev);
5091         struct cnic_eth_dev *ethdev = cp->ethdev;
5092         int ret;
5093         u32 pfid;
5094
5095         dev->stats_addr = ethdev->addr_drv_info_to_mcp;
5096         cp->func = bp->pf_num;
5097
5098         pfid = bp->pfid;
5099
5100         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5101                                cp->iscsi_start_cid, 0);
5102
5103         if (ret)
5104                 return -ENOMEM;
5105
5106         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5107                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5108                                         cp->fcoe_start_cid, 0);
5109
5110                 if (ret)
5111                         return -ENOMEM;
5112         }
5113
5114         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
5115
5116         cnic_init_bnx2x_kcq(dev);
5117
5118         /* Only 1 EQ */
5119         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5120         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5121                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5122         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5123                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5124                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5125         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5126                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5127                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5128         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5129                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5130                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5131         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5132                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5133                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5134         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5135                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5136         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5137                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5138         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5139                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5140                 HC_INDEX_ISCSI_EQ_CONS);
5141
5142         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5143                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5144                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
5145         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5146                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5147                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
5148
5149         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
5150                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
5151
5152         cnic_setup_bnx2x_context(dev);
5153
5154         ret = cnic_init_bnx2x_irq(dev);
5155         if (ret)
5156                 return ret;
5157
5158         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
5159         return 0;
5160 }
5161
5162 static void cnic_init_rings(struct cnic_dev *dev)
5163 {
5164         struct cnic_local *cp = dev->cnic_priv;
5165         struct bnx2x *bp = netdev_priv(dev->netdev);
5166         struct cnic_uio_dev *udev = cp->udev;
5167
5168         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5169                 return;
5170
5171         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5172                 cnic_init_bnx2_tx_ring(dev);
5173                 cnic_init_bnx2_rx_ring(dev);
5174                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5175         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5176                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5177                 u32 cid = cp->ethdev->iscsi_l2_cid;
5178                 u32 cl_qzone_id;
5179                 struct client_init_ramrod_data *data;
5180                 union l5cm_specific_data l5_data;
5181                 struct ustorm_eth_rx_producers rx_prods = {0};
5182                 u32 off, i, *cid_ptr;
5183
5184                 rx_prods.bd_prod = 0;
5185                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
5186                 barrier();
5187
5188                 cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
5189
5190                 off = BAR_USTRORM_INTMEM +
5191                         (BNX2X_CHIP_IS_E2_PLUS(bp) ?
5192                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
5193                          USTORM_RX_PRODS_E1X_OFFSET(BP_PORT(bp), cli));
5194
5195                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5196                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5197
5198                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5199
5200                 data = udev->l2_buf;
5201                 cid_ptr = udev->l2_buf + 12;
5202
5203                 memset(data, 0, sizeof(*data));
5204
5205                 cnic_init_bnx2x_tx_ring(dev, data);
5206                 cnic_init_bnx2x_rx_ring(dev, data);
5207
5208                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5209                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5210
5211                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5212
5213                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5214                         cid, ETH_CONNECTION_TYPE, &l5_data);
5215
5216                 i = 0;
5217                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5218                        ++i < 10)
5219                         msleep(1);
5220
5221                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5222                         netdev_err(dev->netdev,
5223                                 "iSCSI CLIENT_SETUP did not complete\n");
5224                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5225                 cnic_ring_ctl(dev, cid, cli, 1);
5226                 *cid_ptr = cid >> 4;
5227                 *(cid_ptr + 1) = cid * bp->db_size;
5228                 *(cid_ptr + 2) = UIO_USE_TX_DOORBELL;
5229         }
5230 }
5231
5232 static void cnic_shutdown_rings(struct cnic_dev *dev)
5233 {
5234         struct cnic_local *cp = dev->cnic_priv;
5235         struct cnic_uio_dev *udev = cp->udev;
5236         void *rx_ring;
5237
5238         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5239                 return;
5240
5241         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5242                 cnic_shutdown_bnx2_rx_ring(dev);
5243         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5244                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5245                 u32 cid = cp->ethdev->iscsi_l2_cid;
5246                 union l5cm_specific_data l5_data;
5247                 int i;
5248
5249                 cnic_ring_ctl(dev, cid, cli, 0);
5250
5251                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5252
5253                 l5_data.phy_address.lo = cli;
5254                 l5_data.phy_address.hi = 0;
5255                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5256                         cid, ETH_CONNECTION_TYPE, &l5_data);
5257                 i = 0;
5258                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5259                        ++i < 10)
5260                         msleep(1);
5261
5262                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5263                         netdev_err(dev->netdev,
5264                                 "iSCSI CLIENT_HALT did not complete\n");
5265                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5266
5267                 memset(&l5_data, 0, sizeof(l5_data));
5268                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5269                         cid, NONE_CONNECTION_TYPE, &l5_data);
5270                 msleep(10);
5271         }
5272         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5273         rx_ring = udev->l2_ring + CNIC_PAGE_SIZE;
5274         memset(rx_ring, 0, CNIC_PAGE_SIZE);
5275 }
5276
5277 static int cnic_register_netdev(struct cnic_dev *dev)
5278 {
5279         struct cnic_local *cp = dev->cnic_priv;
5280         struct cnic_eth_dev *ethdev = cp->ethdev;
5281         int err;
5282
5283         if (!ethdev)
5284                 return -ENODEV;
5285
5286         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5287                 return 0;
5288
5289         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5290         if (err)
5291                 netdev_err(dev->netdev, "register_cnic failed\n");
5292
5293         /* Read iSCSI config again.  On some bnx2x device, iSCSI config
5294          * can change after firmware is downloaded.
5295          */
5296         dev->max_iscsi_conn = ethdev->max_iscsi_conn;
5297         if (ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
5298                 dev->max_iscsi_conn = 0;
5299
5300         return err;
5301 }
5302
5303 static void cnic_unregister_netdev(struct cnic_dev *dev)
5304 {
5305         struct cnic_local *cp = dev->cnic_priv;
5306         struct cnic_eth_dev *ethdev = cp->ethdev;
5307
5308         if (!ethdev)
5309                 return;
5310
5311         ethdev->drv_unregister_cnic(dev->netdev);
5312 }
5313
5314 static int cnic_start_hw(struct cnic_dev *dev)
5315 {
5316         struct cnic_local *cp = dev->cnic_priv;
5317         struct cnic_eth_dev *ethdev = cp->ethdev;
5318         int err;
5319
5320         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5321                 return -EALREADY;
5322
5323         dev->regview = ethdev->io_base;
5324         pci_dev_get(dev->pcidev);
5325         cp->func = PCI_FUNC(dev->pcidev->devfn);
5326         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5327         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5328
5329         err = cp->alloc_resc(dev);
5330         if (err) {
5331                 netdev_err(dev->netdev, "allocate resource failure\n");
5332                 goto err1;
5333         }
5334
5335         err = cp->start_hw(dev);
5336         if (err)
5337                 goto err1;
5338
5339         err = cnic_cm_open(dev);
5340         if (err)
5341                 goto err1;
5342
5343         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5344
5345         cp->enable_int(dev);
5346
5347         return 0;
5348
5349 err1:
5350         if (ethdev->drv_state & CNIC_DRV_STATE_HANDLES_IRQ)
5351                 cp->stop_hw(dev);
5352         else
5353                 cp->free_resc(dev);
5354         pci_dev_put(dev->pcidev);
5355         return err;
5356 }
5357
5358 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5359 {
5360         cnic_disable_bnx2_int_sync(dev);
5361
5362         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5363         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5364
5365         cnic_init_context(dev, KWQ_CID);
5366         cnic_init_context(dev, KCQ_CID);
5367
5368         cnic_setup_5709_context(dev, 0);
5369         cnic_free_irq(dev);
5370
5371         cnic_free_resc(dev);
5372 }
5373
5374
5375 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5376 {
5377         struct cnic_local *cp = dev->cnic_priv;
5378         struct bnx2x *bp = netdev_priv(dev->netdev);
5379         u32 hc_index = HC_INDEX_ISCSI_EQ_CONS;
5380         u32 sb_id = cp->status_blk_num;
5381         u32 idx_off, syn_off;
5382
5383         cnic_free_irq(dev);
5384
5385         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5386                 idx_off = offsetof(struct hc_status_block_e2, index_values) +
5387                           (hc_index * sizeof(u16));
5388
5389                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E2_OFFSET(hc_index, sb_id);
5390         } else {
5391                 idx_off = offsetof(struct hc_status_block_e1x, index_values) +
5392                           (hc_index * sizeof(u16));
5393
5394                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E1X_OFFSET(hc_index, sb_id);
5395         }
5396         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + syn_off, 0);
5397         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_OFFSET(sb_id) +
5398                   idx_off, 0);
5399
5400         *cp->kcq1.hw_prod_idx_ptr = 0;
5401         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5402                 CSTORM_ISCSI_EQ_CONS_OFFSET(bp->pfid, 0), 0);
5403         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5404         cnic_free_resc(dev);
5405 }
5406
5407 static void cnic_stop_hw(struct cnic_dev *dev)
5408 {
5409         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5410                 struct cnic_local *cp = dev->cnic_priv;
5411                 int i = 0;
5412
5413                 /* Need to wait for the ring shutdown event to complete
5414                  * before clearing the CNIC_UP flag.
5415                  */
5416                 while (cp->udev && cp->udev->uio_dev != -1 && i < 15) {
5417                         msleep(100);
5418                         i++;
5419                 }
5420                 cnic_shutdown_rings(dev);
5421                 cp->stop_cm(dev);
5422                 cp->ethdev->drv_state &= ~CNIC_DRV_STATE_HANDLES_IRQ;
5423                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5424                 RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5425                 synchronize_rcu();
5426                 cnic_cm_shutdown(dev);
5427                 cp->stop_hw(dev);
5428                 pci_dev_put(dev->pcidev);
5429         }
5430 }
5431
5432 static void cnic_free_dev(struct cnic_dev *dev)
5433 {
5434         int i = 0;
5435
5436         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5437                 msleep(100);
5438                 i++;
5439         }
5440         if (atomic_read(&dev->ref_count) != 0)
5441                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5442
5443         netdev_info(dev->netdev, "Removed CNIC device\n");
5444         dev_put(dev->netdev);
5445         kfree(dev);
5446 }
5447
5448 static int cnic_get_fc_npiv_tbl(struct cnic_dev *dev,
5449                                 struct cnic_fc_npiv_tbl *npiv_tbl)
5450 {
5451         struct cnic_local *cp = dev->cnic_priv;
5452         struct bnx2x *bp = netdev_priv(dev->netdev);
5453         int ret;
5454
5455         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
5456                 return -EAGAIN;     /* bnx2x is down */
5457
5458         if (!BNX2X_CHIP_IS_E2_PLUS(bp))
5459                 return -EINVAL;
5460
5461         ret = cp->ethdev->drv_get_fc_npiv_tbl(dev->netdev, npiv_tbl);
5462         return ret;
5463 }
5464
5465 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5466                                        struct pci_dev *pdev)
5467 {
5468         struct cnic_dev *cdev;
5469         struct cnic_local *cp;
5470         int alloc_size;
5471
5472         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5473
5474         cdev = kzalloc(alloc_size, GFP_KERNEL);
5475         if (cdev == NULL)
5476                 return NULL;
5477
5478         cdev->netdev = dev;
5479         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5480         cdev->register_device = cnic_register_device;
5481         cdev->unregister_device = cnic_unregister_device;
5482         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5483         cdev->get_fc_npiv_tbl = cnic_get_fc_npiv_tbl;
5484
5485         cp = cdev->cnic_priv;
5486         cp->dev = cdev;
5487         cp->l2_single_buf_size = 0x400;
5488         cp->l2_rx_ring_size = 3;
5489
5490         spin_lock_init(&cp->cnic_ulp_lock);
5491
5492         netdev_info(dev, "Added CNIC device\n");
5493
5494         return cdev;
5495 }
5496
5497 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5498 {
5499         struct pci_dev *pdev;
5500         struct cnic_dev *cdev;
5501         struct cnic_local *cp;
5502         struct bnx2 *bp = netdev_priv(dev);
5503         struct cnic_eth_dev *ethdev = NULL;
5504
5505         if (bp->cnic_probe)
5506                 ethdev = (bp->cnic_probe)(dev);
5507
5508         if (!ethdev)
5509                 return NULL;
5510
5511         pdev = ethdev->pdev;
5512         if (!pdev)
5513                 return NULL;
5514
5515         dev_hold(dev);
5516         pci_dev_get(pdev);
5517         if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5518              pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5519             (pdev->revision < 0x10)) {
5520                 pci_dev_put(pdev);
5521                 goto cnic_err;
5522         }
5523         pci_dev_put(pdev);
5524
5525         cdev = cnic_alloc_dev(dev, pdev);
5526         if (cdev == NULL)
5527                 goto cnic_err;
5528
5529         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5530         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5531
5532         cp = cdev->cnic_priv;
5533         cp->ethdev = ethdev;
5534         cdev->pcidev = pdev;
5535         cp->chip_id = ethdev->chip_id;
5536
5537         cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5538
5539         cp->cnic_ops = &cnic_bnx2_ops;
5540         cp->start_hw = cnic_start_bnx2_hw;
5541         cp->stop_hw = cnic_stop_bnx2_hw;
5542         cp->setup_pgtbl = cnic_setup_page_tbl;
5543         cp->alloc_resc = cnic_alloc_bnx2_resc;
5544         cp->free_resc = cnic_free_resc;
5545         cp->start_cm = cnic_cm_init_bnx2_hw;
5546         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5547         cp->enable_int = cnic_enable_bnx2_int;
5548         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5549         cp->close_conn = cnic_close_bnx2_conn;
5550         return cdev;
5551
5552 cnic_err:
5553         dev_put(dev);
5554         return NULL;
5555 }
5556
5557 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5558 {
5559         struct pci_dev *pdev;
5560         struct cnic_dev *cdev;
5561         struct cnic_local *cp;
5562         struct bnx2x *bp = netdev_priv(dev);
5563         struct cnic_eth_dev *ethdev = NULL;
5564
5565         if (bp->cnic_probe)
5566                 ethdev = bp->cnic_probe(dev);
5567
5568         if (!ethdev)
5569                 return NULL;
5570
5571         pdev = ethdev->pdev;
5572         if (!pdev)
5573                 return NULL;
5574
5575         dev_hold(dev);
5576         cdev = cnic_alloc_dev(dev, pdev);
5577         if (cdev == NULL) {
5578                 dev_put(dev);
5579                 return NULL;
5580         }
5581
5582         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5583         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5584
5585         cp = cdev->cnic_priv;
5586         cp->ethdev = ethdev;
5587         cdev->pcidev = pdev;
5588         cp->chip_id = ethdev->chip_id;
5589
5590         cdev->stats_addr = ethdev->addr_drv_info_to_mcp;
5591
5592         if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5593                 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5594         if (CNIC_SUPPORTS_FCOE(bp)) {
5595                 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5596                 cdev->max_fcoe_exchanges = ethdev->max_fcoe_exchanges;
5597         }
5598
5599         if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
5600                 cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
5601
5602         memcpy(cdev->mac_addr, ethdev->iscsi_mac, ETH_ALEN);
5603
5604         cp->cnic_ops = &cnic_bnx2x_ops;
5605         cp->start_hw = cnic_start_bnx2x_hw;
5606         cp->stop_hw = cnic_stop_bnx2x_hw;
5607         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5608         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5609         cp->free_resc = cnic_free_resc;
5610         cp->start_cm = cnic_cm_init_bnx2x_hw;
5611         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5612         cp->enable_int = cnic_enable_bnx2x_int;
5613         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5614         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5615                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5616                 cp->arm_int = cnic_arm_bnx2x_e2_msix;
5617         } else {
5618                 cp->ack_int = cnic_ack_bnx2x_msix;
5619                 cp->arm_int = cnic_arm_bnx2x_msix;
5620         }
5621         cp->close_conn = cnic_close_bnx2x_conn;
5622         return cdev;
5623 }
5624
5625 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5626 {
5627         struct ethtool_drvinfo drvinfo;
5628         struct cnic_dev *cdev = NULL;
5629
5630         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5631                 memset(&drvinfo, 0, sizeof(drvinfo));
5632                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5633
5634                 if (!strcmp(drvinfo.driver, "bnx2"))
5635                         cdev = init_bnx2_cnic(dev);
5636                 if (!strcmp(drvinfo.driver, "bnx2x"))
5637                         cdev = init_bnx2x_cnic(dev);
5638                 if (cdev) {
5639                         write_lock(&cnic_dev_lock);
5640                         list_add(&cdev->list, &cnic_dev_list);
5641                         write_unlock(&cnic_dev_lock);
5642                 }
5643         }
5644         return cdev;
5645 }
5646
5647 static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
5648                               u16 vlan_id)
5649 {
5650         int if_type;
5651
5652         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5653                 struct cnic_ulp_ops *ulp_ops;
5654                 void *ctx;
5655
5656                 mutex_lock(&cnic_lock);
5657                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
5658                                                 lockdep_is_held(&cnic_lock));
5659                 if (!ulp_ops || !ulp_ops->indicate_netevent) {
5660                         mutex_unlock(&cnic_lock);
5661                         continue;
5662                 }
5663
5664                 ctx = cp->ulp_handle[if_type];
5665
5666                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
5667                 mutex_unlock(&cnic_lock);
5668
5669                 ulp_ops->indicate_netevent(ctx, event, vlan_id);
5670
5671                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
5672         }
5673 }
5674
5675 /* netdev event handler */
5676 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5677                                                          void *ptr)
5678 {
5679         struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
5680         struct cnic_dev *dev;
5681         int new_dev = 0;
5682
5683         dev = cnic_from_netdev(netdev);
5684
5685         if (!dev && event == NETDEV_REGISTER) {
5686                 /* Check for the hot-plug device */
5687                 dev = is_cnic_dev(netdev);
5688                 if (dev) {
5689                         new_dev = 1;
5690                         cnic_hold(dev);
5691                 }
5692         }
5693         if (dev) {
5694                 struct cnic_local *cp = dev->cnic_priv;
5695
5696                 if (new_dev)
5697                         cnic_ulp_init(dev);
5698                 else if (event == NETDEV_UNREGISTER)
5699                         cnic_ulp_exit(dev);
5700
5701                 if (event == NETDEV_UP) {
5702                         if (cnic_register_netdev(dev) != 0) {
5703                                 cnic_put(dev);
5704                                 goto done;
5705                         }
5706                         if (!cnic_start_hw(dev))
5707                                 cnic_ulp_start(dev);
5708                 }
5709
5710                 cnic_rcv_netevent(cp, event, 0);
5711
5712                 if (event == NETDEV_GOING_DOWN) {
5713                         cnic_ulp_stop(dev);
5714                         cnic_stop_hw(dev);
5715                         cnic_unregister_netdev(dev);
5716                 } else if (event == NETDEV_UNREGISTER) {
5717                         write_lock(&cnic_dev_lock);
5718                         list_del_init(&dev->list);
5719                         write_unlock(&cnic_dev_lock);
5720
5721                         cnic_put(dev);
5722                         cnic_free_dev(dev);
5723                         goto done;
5724                 }
5725                 cnic_put(dev);
5726         } else {
5727                 struct net_device *realdev;
5728                 u16 vid;
5729
5730                 vid = cnic_get_vlan(netdev, &realdev);
5731                 if (realdev) {
5732                         dev = cnic_from_netdev(realdev);
5733                         if (dev) {
5734                                 vid |= VLAN_TAG_PRESENT;
5735                                 cnic_rcv_netevent(dev->cnic_priv, event, vid);
5736                                 cnic_put(dev);
5737                         }
5738                 }
5739         }
5740 done:
5741         return NOTIFY_DONE;
5742 }
5743
5744 static struct notifier_block cnic_netdev_notifier = {
5745         .notifier_call = cnic_netdev_event
5746 };
5747
5748 static void cnic_release(void)
5749 {
5750         struct cnic_uio_dev *udev;
5751
5752         while (!list_empty(&cnic_udev_list)) {
5753                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5754                                   list);
5755                 cnic_free_uio(udev);
5756         }
5757 }
5758
5759 static int __init cnic_init(void)
5760 {
5761         int rc = 0;
5762
5763         pr_info("%s", version);
5764
5765         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5766         if (rc) {
5767                 cnic_release();
5768                 return rc;
5769         }
5770
5771         cnic_wq = create_singlethread_workqueue("cnic_wq");
5772         if (!cnic_wq) {
5773                 cnic_release();
5774                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5775                 return -ENOMEM;
5776         }
5777
5778         return 0;
5779 }
5780
5781 static void __exit cnic_exit(void)
5782 {
5783         unregister_netdevice_notifier(&cnic_netdev_notifier);
5784         cnic_release();
5785         destroy_workqueue(cnic_wq);
5786 }
5787
5788 module_init(cnic_init);
5789 module_exit(cnic_exit);