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 ([email protected])
  11  * Previously modified and maintained by: Michael Chan <[email protected]>
  12  * Maintained By: [email protected]
  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 <[email protected]> and John(Zongxi) "
  64               "Chen ([email protected]");
  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 = bitmap_zalloc(size, 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         bitmap_free(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, GFP_KERNEL);
1031         if (!udev->l2_ring)
1032                 return -ENOMEM;
1033
1034         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
1035         udev->l2_buf_size = CNIC_PAGE_ALIGN(udev->l2_buf_size);
1036         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1037                                           &udev->l2_buf_map, GFP_KERNEL);
1038         if (!udev->l2_buf) {
1039                 __cnic_free_uio_rings(udev);
1040                 return -ENOMEM;
1041         }
1042
1043         return 0;
1044
1045 }
1046
1047 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
1048 {
1049         struct cnic_local *cp = dev->cnic_priv;
1050         struct cnic_uio_dev *udev;
1051
1052         list_for_each_entry(udev, &cnic_udev_list, list) {
1053                 if (udev->pdev == dev->pcidev) {
1054                         udev->dev = dev;
1055                         if (__cnic_alloc_uio_rings(udev, pages)) {
1056                                 udev->dev = NULL;
1057                                 return -ENOMEM;
1058                         }
1059                         cp->udev = udev;
1060                         return 0;
1061                 }
1062         }
1063
1064         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
1065         if (!udev)
1066                 return -ENOMEM;
1067
1068         udev->uio_dev = -1;
1069
1070         udev->dev = dev;
1071         udev->pdev = dev->pcidev;
1072
1073         if (__cnic_alloc_uio_rings(udev, pages))
1074                 goto err_udev;
1075
1076         list_add(&udev->list, &cnic_udev_list);
1077
1078         pci_dev_get(udev->pdev);
1079
1080         cp->udev = udev;
1081
1082         return 0;
1083
1084  err_udev:
1085         kfree(udev);
1086         return -ENOMEM;
1087 }
1088
1089 static int cnic_init_uio(struct cnic_dev *dev)
1090 {
1091         struct cnic_local *cp = dev->cnic_priv;
1092         struct cnic_uio_dev *udev = cp->udev;
1093         struct uio_info *uinfo;
1094         int ret = 0;
1095
1096         if (!udev)
1097                 return -ENOMEM;
1098
1099         uinfo = &udev->cnic_uinfo;
1100
1101         uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
1102         uinfo->mem[0].internal_addr = dev->regview;
1103         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1104
1105         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1106                 uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
1107                                                      TX_MAX_TSS_RINGS + 1);
1108                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1109                                         CNIC_PAGE_MASK;
1110                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1111                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1112                 else
1113                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1114
1115                 uinfo->name = "bnx2_cnic";
1116         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1117                 uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);
1118
1119                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1120                         CNIC_PAGE_MASK;
1121                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1122
1123                 uinfo->name = "bnx2x_cnic";
1124         }
1125
1126         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1127
1128         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1129         uinfo->mem[2].size = udev->l2_ring_size;
1130         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1131
1132         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1133         uinfo->mem[3].size = udev->l2_buf_size;
1134         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1135
1136         uinfo->version = CNIC_MODULE_VERSION;
1137         uinfo->irq = UIO_IRQ_CUSTOM;
1138
1139         uinfo->open = cnic_uio_open;
1140         uinfo->release = cnic_uio_close;
1141
1142         if (udev->uio_dev == -1) {
1143                 if (!uinfo->priv) {
1144                         uinfo->priv = udev;
1145
1146                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1147                 }
1148         } else {
1149                 cnic_init_rings(dev);
1150         }
1151
1152         return ret;
1153 }
1154
1155 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1156 {
1157         struct cnic_local *cp = dev->cnic_priv;
1158         int ret;
1159
1160         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1161         if (ret)
1162                 goto error;
1163         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1164
1165         ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1166         if (ret)
1167                 goto error;
1168
1169         ret = cnic_alloc_context(dev);
1170         if (ret)
1171                 goto error;
1172
1173         ret = cnic_alloc_uio_rings(dev, 2);
1174         if (ret)
1175                 goto error;
1176
1177         ret = cnic_init_uio(dev);
1178         if (ret)
1179                 goto error;
1180
1181         return 0;
1182
1183 error:
1184         cnic_free_resc(dev);
1185         return ret;
1186 }
1187
1188 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1189 {
1190         struct cnic_local *cp = dev->cnic_priv;
1191         struct bnx2x *bp = netdev_priv(dev->netdev);
1192         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1193         int total_mem, blks, i;
1194
1195         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1196         blks = total_mem / ctx_blk_size;
1197         if (total_mem % ctx_blk_size)
1198                 blks++;
1199
1200         if (blks > cp->ethdev->ctx_tbl_len)
1201                 return -ENOMEM;
1202
1203         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1204         if (cp->ctx_arr == NULL)
1205                 return -ENOMEM;
1206
1207         cp->ctx_blks = blks;
1208         cp->ctx_blk_size = ctx_blk_size;
1209         if (!CHIP_IS_E1(bp))
1210                 cp->ctx_align = 0;
1211         else
1212                 cp->ctx_align = ctx_blk_size;
1213
1214         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1215
1216         for (i = 0; i < blks; i++) {
1217                 cp->ctx_arr[i].ctx =
1218                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1219                                            &cp->ctx_arr[i].mapping,
1220                                            GFP_KERNEL);
1221                 if (cp->ctx_arr[i].ctx == NULL)
1222                         return -ENOMEM;
1223
1224                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1225                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1226                                 cnic_free_context(dev);
1227                                 cp->ctx_blk_size += cp->ctx_align;
1228                                 i = -1;
1229                                 continue;
1230                         }
1231                 }
1232         }
1233         return 0;
1234 }
1235
1236 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1237 {
1238         struct cnic_local *cp = dev->cnic_priv;
1239         struct bnx2x *bp = netdev_priv(dev->netdev);
1240         struct cnic_eth_dev *ethdev = cp->ethdev;
1241         u32 start_cid = ethdev->starting_cid;
1242         int i, j, n, ret, pages;
1243         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1244
1245         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1246         cp->iscsi_start_cid = start_cid;
1247         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1248
1249         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
1250                 cp->max_cid_space += dev->max_fcoe_conn;
1251                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1252                 if (!cp->fcoe_init_cid)
1253                         cp->fcoe_init_cid = 0x10;
1254         }
1255
1256         cp->iscsi_tbl = kcalloc(MAX_ISCSI_TBL_SZ, sizeof(struct cnic_iscsi),
1257                                 GFP_KERNEL);
1258         if (!cp->iscsi_tbl)
1259                 goto error;
1260
1261         cp->ctx_tbl = kcalloc(cp->max_cid_space, sizeof(struct cnic_context),
1262                               GFP_KERNEL);
1263         if (!cp->ctx_tbl)
1264                 goto error;
1265
1266         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1267                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1268                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1269         }
1270
1271         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1272                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1273
1274         pages = CNIC_PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1275                 CNIC_PAGE_SIZE;
1276
1277         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1278         if (ret)
1279                 goto error;
1280
1281         n = CNIC_PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1282         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1283                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1284
1285                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1286                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1287                                                    off;
1288
1289                 if ((i % n) == (n - 1))
1290                         j++;
1291         }
1292
1293         ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1294         if (ret)
1295                 goto error;
1296
1297         if (CNIC_SUPPORTS_FCOE(bp)) {
1298                 ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1299                 if (ret)
1300                         goto error;
1301         }
1302
1303         pages = CNIC_PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / CNIC_PAGE_SIZE;
1304         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1305         if (ret)
1306                 goto error;
1307
1308         ret = cnic_alloc_bnx2x_context(dev);
1309         if (ret)
1310                 goto error;
1311
1312         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
1313                 return 0;
1314
1315         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1316
1317         cp->l2_rx_ring_size = 15;
1318
1319         ret = cnic_alloc_uio_rings(dev, 4);
1320         if (ret)
1321                 goto error;
1322
1323         ret = cnic_init_uio(dev);
1324         if (ret)
1325                 goto error;
1326
1327         return 0;
1328
1329 error:
1330         cnic_free_resc(dev);
1331         return -ENOMEM;
1332 }
1333
1334 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1335 {
1336         return cp->max_kwq_idx -
1337                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1338 }
1339
1340 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1341                                   u32 num_wqes)
1342 {
1343         struct cnic_local *cp = dev->cnic_priv;
1344         struct kwqe *prod_qe;
1345         u16 prod, sw_prod, i;
1346
1347         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1348                 return -EAGAIN;         /* bnx2 is down */
1349
1350         spin_lock_bh(&cp->cnic_ulp_lock);
1351         if (num_wqes > cnic_kwq_avail(cp) &&
1352             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1353                 spin_unlock_bh(&cp->cnic_ulp_lock);
1354                 return -EAGAIN;
1355         }
1356
1357         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1358
1359         prod = cp->kwq_prod_idx;
1360         sw_prod = prod & MAX_KWQ_IDX;
1361         for (i = 0; i < num_wqes; i++) {
1362                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1363                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1364                 prod++;
1365                 sw_prod = prod & MAX_KWQ_IDX;
1366         }
1367         cp->kwq_prod_idx = prod;
1368
1369         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1370
1371         spin_unlock_bh(&cp->cnic_ulp_lock);
1372         return 0;
1373 }
1374
1375 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1376                                    union l5cm_specific_data *l5_data)
1377 {
1378         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1379         dma_addr_t map;
1380
1381         map = ctx->kwqe_data_mapping;
1382         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1383         l5_data->phy_address.hi = (u64) map >> 32;
1384         return ctx->kwqe_data;
1385 }
1386
1387 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1388                                 u32 type, union l5cm_specific_data *l5_data)
1389 {
1390         struct cnic_local *cp = dev->cnic_priv;
1391         struct bnx2x *bp = netdev_priv(dev->netdev);
1392         struct l5cm_spe kwqe;
1393         struct kwqe_16 *kwq[1];
1394         u16 type_16;
1395         int ret;
1396
1397         kwqe.hdr.conn_and_cmd_data =
1398                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1399                              BNX2X_HW_CID(bp, cid)));
1400
1401         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1402         type_16 |= (bp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1403                    SPE_HDR_FUNCTION_ID;
1404
1405         kwqe.hdr.type = cpu_to_le16(type_16);
1406         kwqe.hdr.reserved1 = 0;
1407         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1408         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1409
1410         kwq[0] = (struct kwqe_16 *) &kwqe;
1411
1412         spin_lock_bh(&cp->cnic_ulp_lock);
1413         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1414         spin_unlock_bh(&cp->cnic_ulp_lock);
1415
1416         if (ret == 1)
1417                 return 0;
1418
1419         return ret;
1420 }
1421
1422 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1423                                    struct kcqe *cqes[], u32 num_cqes)
1424 {
1425         struct cnic_local *cp = dev->cnic_priv;
1426         struct cnic_ulp_ops *ulp_ops;
1427
1428         rcu_read_lock();
1429         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1430         if (likely(ulp_ops)) {
1431                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1432                                           cqes, num_cqes);
1433         }
1434         rcu_read_unlock();
1435 }
1436
1437 static void cnic_bnx2x_set_tcp_options(struct cnic_dev *dev, int time_stamps,
1438                                        int en_tcp_dack)
1439 {
1440         struct bnx2x *bp = netdev_priv(dev->netdev);
1441         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1442         u16 tstorm_flags = 0;
1443
1444         if (time_stamps) {
1445                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1446                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1447         }
1448         if (en_tcp_dack)
1449                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_DELAYED_ACK_EN;
1450
1451         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1452                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), xstorm_flags);
1453
1454         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1455                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), tstorm_flags);
1456 }
1457
1458 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1459 {
1460         struct cnic_local *cp = dev->cnic_priv;
1461         struct bnx2x *bp = netdev_priv(dev->netdev);
1462         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1463         int hq_bds, pages;
1464         u32 pfid = bp->pfid;
1465
1466         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1467         cp->num_ccells = req1->num_ccells_per_conn;
1468         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1469                               cp->num_iscsi_tasks;
1470         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1471                         BNX2X_ISCSI_R2TQE_SIZE;
1472         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1473         pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1474         hq_bds = pages * (CNIC_PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1475         cp->num_cqs = req1->num_cqs;
1476
1477         if (!dev->max_iscsi_conn)
1478                 return 0;
1479
1480         /* init Tstorm RAM */
1481         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1482                   req1->rq_num_wqes);
1483         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1484                   CNIC_PAGE_SIZE);
1485         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1486                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1487         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1488                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1489                   req1->num_tasks_per_conn);
1490
1491         /* init Ustorm RAM */
1492         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1493                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1494                   req1->rq_buffer_size);
1495         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1496                   CNIC_PAGE_SIZE);
1497         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1498                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1499         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1500                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1501                   req1->num_tasks_per_conn);
1502         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1503                   req1->rq_num_wqes);
1504         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1505                   req1->cq_num_wqes);
1506         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1507                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1508
1509         /* init Xstorm RAM */
1510         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1511                   CNIC_PAGE_SIZE);
1512         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1513                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1514         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1515                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1516                   req1->num_tasks_per_conn);
1517         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1518                   hq_bds);
1519         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1520                   req1->num_tasks_per_conn);
1521         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1522                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1523
1524         /* init Cstorm RAM */
1525         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1526                   CNIC_PAGE_SIZE);
1527         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1528                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1529         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1530                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1531                   req1->num_tasks_per_conn);
1532         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1533                   req1->cq_num_wqes);
1534         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1535                   hq_bds);
1536
1537         cnic_bnx2x_set_tcp_options(dev,
1538                         req1->flags & ISCSI_KWQE_INIT1_TIME_STAMPS_ENABLE,
1539                         req1->flags & ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE);
1540
1541         return 0;
1542 }
1543
1544 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1545 {
1546         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1547         struct bnx2x *bp = netdev_priv(dev->netdev);
1548         u32 pfid = bp->pfid;
1549         struct iscsi_kcqe kcqe;
1550         struct kcqe *cqes[1];
1551
1552         memset(&kcqe, 0, sizeof(kcqe));
1553         if (!dev->max_iscsi_conn) {
1554                 kcqe.completion_status =
1555                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1556                 goto done;
1557         }
1558
1559         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1560                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1561         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1562                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1563                 req2->error_bit_map[1]);
1564
1565         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1566                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1567         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1568                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1569         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1570                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1571                 req2->error_bit_map[1]);
1572
1573         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1574                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1575
1576         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1577
1578 done:
1579         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1580         cqes[0] = (struct kcqe *) &kcqe;
1581         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1582
1583         return 0;
1584 }
1585
1586 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1587 {
1588         struct cnic_local *cp = dev->cnic_priv;
1589         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1590
1591         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1592                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1593
1594                 cnic_free_dma(dev, &iscsi->hq_info);
1595                 cnic_free_dma(dev, &iscsi->r2tq_info);
1596                 cnic_free_dma(dev, &iscsi->task_array_info);
1597                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1598         } else {
1599                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1600         }
1601
1602         ctx->cid = 0;
1603 }
1604
1605 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1606 {
1607         u32 cid;
1608         int ret, pages;
1609         struct cnic_local *cp = dev->cnic_priv;
1610         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1611         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1612
1613         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1614                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1615                 if (cid == -1) {
1616                         ret = -ENOMEM;
1617                         goto error;
1618                 }
1619                 ctx->cid = cid;
1620                 return 0;
1621         }
1622
1623         cid = cnic_alloc_new_id(&cp->cid_tbl);
1624         if (cid == -1) {
1625                 ret = -ENOMEM;
1626                 goto error;
1627         }
1628
1629         ctx->cid = cid;
1630         pages = CNIC_PAGE_ALIGN(cp->task_array_size) / CNIC_PAGE_SIZE;
1631
1632         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1633         if (ret)
1634                 goto error;
1635
1636         pages = CNIC_PAGE_ALIGN(cp->r2tq_size) / CNIC_PAGE_SIZE;
1637         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1638         if (ret)
1639                 goto error;
1640
1641         pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1642         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1643         if (ret)
1644                 goto error;
1645
1646         return 0;
1647
1648 error:
1649         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1650         return ret;
1651 }
1652
1653 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1654                                 struct regpair *ctx_addr)
1655 {
1656         struct cnic_local *cp = dev->cnic_priv;
1657         struct cnic_eth_dev *ethdev = cp->ethdev;
1658         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1659         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1660         unsigned long align_off = 0;
1661         dma_addr_t ctx_map;
1662         void *ctx;
1663
1664         if (cp->ctx_align) {
1665                 unsigned long mask = cp->ctx_align - 1;
1666
1667                 if (cp->ctx_arr[blk].mapping & mask)
1668                         align_off = cp->ctx_align -
1669                                     (cp->ctx_arr[blk].mapping & mask);
1670         }
1671         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1672                 (off * BNX2X_CONTEXT_MEM_SIZE);
1673         ctx = cp->ctx_arr[blk].ctx + align_off +
1674               (off * BNX2X_CONTEXT_MEM_SIZE);
1675         if (init)
1676                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1677
1678         ctx_addr->lo = ctx_map & 0xffffffff;
1679         ctx_addr->hi = (u64) ctx_map >> 32;
1680         return ctx;
1681 }
1682
1683 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1684                                 u32 num)
1685 {
1686         struct cnic_local *cp = dev->cnic_priv;
1687         struct bnx2x *bp = netdev_priv(dev->netdev);
1688         struct iscsi_kwqe_conn_offload1 *req1 =
1689                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1690         struct iscsi_kwqe_conn_offload2 *req2 =
1691                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1692         struct iscsi_kwqe_conn_offload3 *req3;
1693         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1694         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1695         u32 cid = ctx->cid;
1696         u32 hw_cid = BNX2X_HW_CID(bp, cid);
1697         struct iscsi_context *ictx;
1698         struct regpair context_addr;
1699         int i, j, n = 2, n_max;
1700         u8 port = BP_PORT(bp);
1701
1702         ctx->ctx_flags = 0;
1703         if (!req2->num_additional_wqes)
1704                 return -EINVAL;
1705
1706         n_max = req2->num_additional_wqes + 2;
1707
1708         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1709         if (ictx == NULL)
1710                 return -ENOMEM;
1711
1712         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1713
1714         ictx->xstorm_ag_context.hq_prod = 1;
1715
1716         ictx->xstorm_st_context.iscsi.first_burst_length =
1717                 ISCSI_DEF_FIRST_BURST_LEN;
1718         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1719                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1720         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1721                 req1->sq_page_table_addr_lo;
1722         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1723                 req1->sq_page_table_addr_hi;
1724         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1725         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1726         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1727                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1728         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1729                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1730         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1731                 iscsi->hq_info.pgtbl[0];
1732         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1733                 iscsi->hq_info.pgtbl[1];
1734         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1735                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1736         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1737                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1738         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1739                 iscsi->r2tq_info.pgtbl[0];
1740         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1741                 iscsi->r2tq_info.pgtbl[1];
1742         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1743                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1744         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1745                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1746         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1747                 BNX2X_ISCSI_PBL_NOT_CACHED;
1748         ictx->xstorm_st_context.iscsi.flags.flags |=
1749                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1750         ictx->xstorm_st_context.iscsi.flags.flags |=
1751                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1752         ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1753                 ETH_P_8021Q;
1754         if (BNX2X_CHIP_IS_E2_PLUS(bp) &&
1755             bp->common.chip_port_mode == CHIP_2_PORT_MODE) {
1756
1757                 port = 0;
1758         }
1759         ictx->xstorm_st_context.common.flags =
1760                 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1761         ictx->xstorm_st_context.common.flags =
1762                 port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1763
1764         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1765         /* TSTORM requires the base address of RQ DB & not PTE */
1766         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1767                 req2->rq_page_table_addr_lo & CNIC_PAGE_MASK;
1768         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1769                 req2->rq_page_table_addr_hi;
1770         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1771         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1772         ictx->tstorm_st_context.tcp.flags2 |=
1773                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1774         ictx->tstorm_st_context.tcp.ooo_support_mode =
1775                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1776
1777         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1778
1779         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1780                 req2->rq_page_table_addr_lo;
1781         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1782                 req2->rq_page_table_addr_hi;
1783         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1784         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1785         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1786                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1787         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1788                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1789         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1790                 iscsi->r2tq_info.pgtbl[0];
1791         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1792                 iscsi->r2tq_info.pgtbl[1];
1793         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1794                 req1->cq_page_table_addr_lo;
1795         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1796                 req1->cq_page_table_addr_hi;
1797         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1798         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1799         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1800         ictx->ustorm_st_context.task_pbe_cache_index =
1801                 BNX2X_ISCSI_PBL_NOT_CACHED;
1802         ictx->ustorm_st_context.task_pdu_cache_index =
1803                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1804
1805         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1806                 if (j == 3) {
1807                         if (n >= n_max)
1808                                 break;
1809                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1810                         j = 0;
1811                 }
1812                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1813                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1814                         req3->qp_first_pte[j].hi;
1815                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1816                         req3->qp_first_pte[j].lo;
1817         }
1818
1819         ictx->ustorm_st_context.task_pbl_base.lo =
1820                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1821         ictx->ustorm_st_context.task_pbl_base.hi =
1822                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1823         ictx->ustorm_st_context.tce_phy_addr.lo =
1824                 iscsi->task_array_info.pgtbl[0];
1825         ictx->ustorm_st_context.tce_phy_addr.hi =
1826                 iscsi->task_array_info.pgtbl[1];
1827         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1828         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1829         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1830         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1831                 ISCSI_DEF_MAX_BURST_LEN;
1832         ictx->ustorm_st_context.negotiated_rx |=
1833                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1834                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1835
1836         ictx->cstorm_st_context.hq_pbl_base.lo =
1837                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1838         ictx->cstorm_st_context.hq_pbl_base.hi =
1839                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1840         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1841         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1842         ictx->cstorm_st_context.task_pbl_base.lo =
1843                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1844         ictx->cstorm_st_context.task_pbl_base.hi =
1845                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1846         /* CSTORM and USTORM initialization is different, CSTORM requires
1847          * CQ DB base & not PTE addr */
1848         ictx->cstorm_st_context.cq_db_base.lo =
1849                 req1->cq_page_table_addr_lo & CNIC_PAGE_MASK;
1850         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1851         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1852         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1853         for (i = 0; i < cp->num_cqs; i++) {
1854                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1855                         ISCSI_INITIAL_SN;
1856                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1857                         ISCSI_INITIAL_SN;
1858         }
1859
1860         ictx->xstorm_ag_context.cdu_reserved =
1861                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1862                                        ISCSI_CONNECTION_TYPE);
1863         ictx->ustorm_ag_context.cdu_usage =
1864                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1865                                        ISCSI_CONNECTION_TYPE);
1866         return 0;
1867
1868 }
1869
1870 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1871                                    u32 num, int *work)
1872 {
1873         struct iscsi_kwqe_conn_offload1 *req1;
1874         struct iscsi_kwqe_conn_offload2 *req2;
1875         struct cnic_local *cp = dev->cnic_priv;
1876         struct bnx2x *bp = netdev_priv(dev->netdev);
1877         struct cnic_context *ctx;
1878         struct iscsi_kcqe kcqe;
1879         struct kcqe *cqes[1];
1880         u32 l5_cid;
1881         int ret = 0;
1882
1883         if (num < 2) {
1884                 *work = num;
1885                 return -EINVAL;
1886         }
1887
1888         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1889         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1890         if ((num - 2) < req2->num_additional_wqes) {
1891                 *work = num;
1892                 return -EINVAL;
1893         }
1894         *work = 2 + req2->num_additional_wqes;
1895
1896         l5_cid = req1->iscsi_conn_id;
1897         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1898                 return -EINVAL;
1899
1900         memset(&kcqe, 0, sizeof(kcqe));
1901         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1902         kcqe.iscsi_conn_id = l5_cid;
1903         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1904
1905         ctx = &cp->ctx_tbl[l5_cid];
1906         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1907                 kcqe.completion_status =
1908                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1909                 goto done;
1910         }
1911
1912         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1913                 atomic_dec(&cp->iscsi_conn);
1914                 goto done;
1915         }
1916         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1917         if (ret) {
1918                 atomic_dec(&cp->iscsi_conn);
1919                 goto done;
1920         }
1921         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1922         if (ret < 0) {
1923                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1924                 atomic_dec(&cp->iscsi_conn);
1925                 goto done;
1926         }
1927
1928         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1929         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(bp, cp->ctx_tbl[l5_cid].cid);
1930
1931 done:
1932         cqes[0] = (struct kcqe *) &kcqe;
1933         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1934         return 0;
1935 }
1936
1937
1938 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1939 {
1940         struct cnic_local *cp = dev->cnic_priv;
1941         struct iscsi_kwqe_conn_update *req =
1942                 (struct iscsi_kwqe_conn_update *) kwqe;
1943         void *data;
1944         union l5cm_specific_data l5_data;
1945         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1946         int ret;
1947
1948         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1949                 return -EINVAL;
1950
1951         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1952         if (!data)
1953                 return -ENOMEM;
1954
1955         memcpy(data, kwqe, sizeof(struct kwqe));
1956
1957         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1958                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1959         return ret;
1960 }
1961
1962 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1963 {
1964         struct cnic_local *cp = dev->cnic_priv;
1965         struct bnx2x *bp = netdev_priv(dev->netdev);
1966         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1967         union l5cm_specific_data l5_data;
1968         int ret;
1969         u32 hw_cid;
1970
1971         init_waitqueue_head(&ctx->waitq);
1972         ctx->wait_cond = 0;
1973         memset(&l5_data, 0, sizeof(l5_data));
1974         hw_cid = BNX2X_HW_CID(bp, ctx->cid);
1975
1976         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1977                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1978
1979         if (ret == 0) {
1980                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1981                 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1982                         return -EBUSY;
1983         }
1984
1985         return 0;
1986 }
1987
1988 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1989 {
1990         struct cnic_local *cp = dev->cnic_priv;
1991         struct iscsi_kwqe_conn_destroy *req =
1992                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1993         u32 l5_cid = req->reserved0;
1994         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1995         int ret = 0;
1996         struct iscsi_kcqe kcqe;
1997         struct kcqe *cqes[1];
1998
1999         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2000                 goto skip_cfc_delete;
2001
2002         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
2003                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
2004
2005                 if (delta > (2 * HZ))
2006                         delta = 0;
2007
2008                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2009                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
2010                 goto destroy_reply;
2011         }
2012
2013         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
2014
2015 skip_cfc_delete:
2016         cnic_free_bnx2x_conn_resc(dev, l5_cid);
2017
2018         if (!ret) {
2019                 atomic_dec(&cp->iscsi_conn);
2020                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2021         }
2022
2023 destroy_reply:
2024         memset(&kcqe, 0, sizeof(kcqe));
2025         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
2026         kcqe.iscsi_conn_id = l5_cid;
2027         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
2028         kcqe.iscsi_conn_context_id = req->context_id;
2029
2030         cqes[0] = (struct kcqe *) &kcqe;
2031         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
2032
2033         return 0;
2034 }
2035
2036 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
2037                                       struct l4_kwq_connect_req1 *kwqe1,
2038                                       struct l4_kwq_connect_req3 *kwqe3,
2039                                       struct l5cm_active_conn_buffer *conn_buf)
2040 {
2041         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
2042         struct l5cm_xstorm_conn_buffer *xstorm_buf =
2043                 &conn_buf->xstorm_conn_buffer;
2044         struct l5cm_tstorm_conn_buffer *tstorm_buf =
2045                 &conn_buf->tstorm_conn_buffer;
2046         struct regpair context_addr;
2047         u32 cid = BNX2X_SW_CID(kwqe1->cid);
2048         struct in6_addr src_ip, dst_ip;
2049         int i;
2050         u32 *addrp;
2051
2052         addrp = (u32 *) &conn_addr->local_ip_addr;
2053         for (i = 0; i < 4; i++, addrp++)
2054                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2055
2056         addrp = (u32 *) &conn_addr->remote_ip_addr;
2057         for (i = 0; i < 4; i++, addrp++)
2058                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2059
2060         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
2061
2062         xstorm_buf->context_addr.hi = context_addr.hi;
2063         xstorm_buf->context_addr.lo = context_addr.lo;
2064         xstorm_buf->mss = 0xffff;
2065         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
2066         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
2067                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
2068         xstorm_buf->pseudo_header_checksum =
2069                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
2070
2071         if (kwqe3->ka_timeout) {
2072                 tstorm_buf->ka_enable = 1;
2073                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
2074                 tstorm_buf->ka_interval = kwqe3->ka_interval;
2075                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
2076         }
2077         tstorm_buf->max_rt_time = 0xffffffff;
2078 }
2079
2080 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2081 {
2082         struct bnx2x *bp = netdev_priv(dev->netdev);
2083         u32 pfid = bp->pfid;
2084         u8 *mac = dev->mac_addr;
2085
2086         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2087                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2088         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2089                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2090         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2091                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2092         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2093                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2094         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2095                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2096         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2097                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2098
2099         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2100                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2101         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2102                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2103                  mac[4]);
2104         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2105                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2106         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2107                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2108                  mac[2]);
2109         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2110                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2111         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2112                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2113                  mac[0]);
2114 }
2115
2116 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2117                               u32 num, int *work)
2118 {
2119         struct cnic_local *cp = dev->cnic_priv;
2120         struct bnx2x *bp = netdev_priv(dev->netdev);
2121         struct l4_kwq_connect_req1 *kwqe1 =
2122                 (struct l4_kwq_connect_req1 *) wqes[0];
2123         struct l4_kwq_connect_req3 *kwqe3;
2124         struct l5cm_active_conn_buffer *conn_buf;
2125         struct l5cm_conn_addr_params *conn_addr;
2126         union l5cm_specific_data l5_data;
2127         u32 l5_cid = kwqe1->pg_cid;
2128         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2129         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2130         int ret;
2131
2132         if (num < 2) {
2133                 *work = num;
2134                 return -EINVAL;
2135         }
2136
2137         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2138                 *work = 3;
2139         else
2140                 *work = 2;
2141
2142         if (num < *work) {
2143                 *work = num;
2144                 return -EINVAL;
2145         }
2146
2147         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2148                 netdev_err(dev->netdev, "conn_buf size too big\n");
2149                 return -ENOMEM;
2150         }
2151         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2152         if (!conn_buf)
2153                 return -ENOMEM;
2154
2155         memset(conn_buf, 0, sizeof(*conn_buf));
2156
2157         conn_addr = &conn_buf->conn_addr_buf;
2158         conn_addr->remote_addr_0 = csk->ha[0];
2159         conn_addr->remote_addr_1 = csk->ha[1];
2160         conn_addr->remote_addr_2 = csk->ha[2];
2161         conn_addr->remote_addr_3 = csk->ha[3];
2162         conn_addr->remote_addr_4 = csk->ha[4];
2163         conn_addr->remote_addr_5 = csk->ha[5];
2164
2165         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2166                 struct l4_kwq_connect_req2 *kwqe2 =
2167                         (struct l4_kwq_connect_req2 *) wqes[1];
2168
2169                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2170                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2171                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2172
2173                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2174                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2175                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2176                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2177         }
2178         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2179
2180         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2181         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2182         conn_addr->local_tcp_port = kwqe1->src_port;
2183         conn_addr->remote_tcp_port = kwqe1->dst_port;
2184
2185         conn_addr->pmtu = kwqe3->pmtu;
2186         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2187
2188         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2189                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(bp->pfid), csk->vlan_id);
2190
2191         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2192                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2193         if (!ret)
2194                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2195
2196         return ret;
2197 }
2198
2199 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2200 {
2201         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2202         union l5cm_specific_data l5_data;
2203         int ret;
2204
2205         memset(&l5_data, 0, sizeof(l5_data));
2206         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2207                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2208         return ret;
2209 }
2210
2211 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2212 {
2213         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2214         union l5cm_specific_data l5_data;
2215         int ret;
2216
2217         memset(&l5_data, 0, sizeof(l5_data));
2218         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2219                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2220         return ret;
2221 }
2222 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2223 {
2224         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2225         struct l4_kcq kcqe;
2226         struct kcqe *cqes[1];
2227
2228         memset(&kcqe, 0, sizeof(kcqe));
2229         kcqe.pg_host_opaque = req->host_opaque;
2230         kcqe.pg_cid = req->host_opaque;
2231         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2232         cqes[0] = (struct kcqe *) &kcqe;
2233         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2234         return 0;
2235 }
2236
2237 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2238 {
2239         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2240         struct l4_kcq kcqe;
2241         struct kcqe *cqes[1];
2242
2243         memset(&kcqe, 0, sizeof(kcqe));
2244         kcqe.pg_host_opaque = req->pg_host_opaque;
2245         kcqe.pg_cid = req->pg_cid;
2246         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2247         cqes[0] = (struct kcqe *) &kcqe;
2248         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2249         return 0;
2250 }
2251
2252 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2253 {
2254         struct fcoe_kwqe_stat *req;
2255         struct fcoe_stat_ramrod_params *fcoe_stat;
2256         union l5cm_specific_data l5_data;
2257         struct cnic_local *cp = dev->cnic_priv;
2258         struct bnx2x *bp = netdev_priv(dev->netdev);
2259         int ret;
2260         u32 cid;
2261
2262         req = (struct fcoe_kwqe_stat *) kwqe;
2263         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2264
2265         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2266         if (!fcoe_stat)
2267                 return -ENOMEM;
2268
2269         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2270         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2271
2272         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2273                                   FCOE_CONNECTION_TYPE, &l5_data);
2274         return ret;
2275 }
2276
2277 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2278                                  u32 num, int *work)
2279 {
2280         int ret;
2281         struct cnic_local *cp = dev->cnic_priv;
2282         struct bnx2x *bp = netdev_priv(dev->netdev);
2283         u32 cid;
2284         struct fcoe_init_ramrod_params *fcoe_init;
2285         struct fcoe_kwqe_init1 *req1;
2286         struct fcoe_kwqe_init2 *req2;
2287         struct fcoe_kwqe_init3 *req3;
2288         union l5cm_specific_data l5_data;
2289
2290         if (num < 3) {
2291                 *work = num;
2292                 return -EINVAL;
2293         }
2294         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2295         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2296         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2297         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2298                 *work = 1;
2299                 return -EINVAL;
2300         }
2301         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2302                 *work = 2;
2303                 return -EINVAL;
2304         }
2305
2306         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2307                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2308                 return -ENOMEM;
2309         }
2310         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2311         if (!fcoe_init)
2312                 return -ENOMEM;
2313
2314         memset(fcoe_init, 0, sizeof(*fcoe_init));
2315         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2316         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2317         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2318         fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2319         fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2320         fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2321
2322         fcoe_init->sb_num = cp->status_blk_num;
2323         fcoe_init->eq_prod = MAX_KCQ_IDX;
2324         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2325         cp->kcq2.sw_prod_idx = 0;
2326
2327         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2328         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2329                                   FCOE_CONNECTION_TYPE, &l5_data);
2330         *work = 3;
2331         return ret;
2332 }
2333
2334 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2335                                  u32 num, int *work)
2336 {
2337         int ret = 0;
2338         u32 cid = -1, l5_cid;
2339         struct cnic_local *cp = dev->cnic_priv;
2340         struct bnx2x *bp = netdev_priv(dev->netdev);
2341         struct fcoe_kwqe_conn_offload1 *req1;
2342         struct fcoe_kwqe_conn_offload2 *req2;
2343         struct fcoe_kwqe_conn_offload3 *req3;
2344         struct fcoe_kwqe_conn_offload4 *req4;
2345         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2346         struct cnic_context *ctx;
2347         struct fcoe_context *fctx;
2348         struct regpair ctx_addr;
2349         union l5cm_specific_data l5_data;
2350         struct fcoe_kcqe kcqe;
2351         struct kcqe *cqes[1];
2352
2353         if (num < 4) {
2354                 *work = num;
2355                 return -EINVAL;
2356         }
2357         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2358         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2359         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2360         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2361
2362         *work = 4;
2363
2364         l5_cid = req1->fcoe_conn_id;
2365         if (l5_cid >= dev->max_fcoe_conn)
2366                 goto err_reply;
2367
2368         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2369
2370         ctx = &cp->ctx_tbl[l5_cid];
2371         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2372                 goto err_reply;
2373
2374         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2375         if (ret) {
2376                 ret = 0;
2377                 goto err_reply;
2378         }
2379         cid = ctx->cid;
2380
2381         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2382         if (fctx) {
2383                 u32 hw_cid = BNX2X_HW_CID(bp, cid);
2384                 u32 val;
2385
2386                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2387                                              FCOE_CONNECTION_TYPE);
2388                 fctx->xstorm_ag_context.cdu_reserved = val;
2389                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2390                                              FCOE_CONNECTION_TYPE);
2391                 fctx->ustorm_ag_context.cdu_usage = val;
2392         }
2393         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2394                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2395                 goto err_reply;
2396         }
2397         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2398         if (!fcoe_offload)
2399                 goto err_reply;
2400
2401         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2402         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2403         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2404         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2405         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2406
2407         cid = BNX2X_HW_CID(bp, cid);
2408         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2409                                   FCOE_CONNECTION_TYPE, &l5_data);
2410         if (!ret)
2411                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2412
2413         return ret;
2414
2415 err_reply:
2416         if (cid != -1)
2417                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2418
2419         memset(&kcqe, 0, sizeof(kcqe));
2420         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2421         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2422         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2423
2424         cqes[0] = (struct kcqe *) &kcqe;
2425         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2426         return ret;
2427 }
2428
2429 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2430 {
2431         struct fcoe_kwqe_conn_enable_disable *req;
2432         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2433         union l5cm_specific_data l5_data;
2434         int ret;
2435         u32 cid, l5_cid;
2436         struct cnic_local *cp = dev->cnic_priv;
2437
2438         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2439         cid = req->context_id;
2440         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2441
2442         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2443                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2444                 return -ENOMEM;
2445         }
2446         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2447         if (!fcoe_enable)
2448                 return -ENOMEM;
2449
2450         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2451         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2452         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2453                                   FCOE_CONNECTION_TYPE, &l5_data);
2454         return ret;
2455 }
2456
2457 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2458 {
2459         struct fcoe_kwqe_conn_enable_disable *req;
2460         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2461         union l5cm_specific_data l5_data;
2462         int ret;
2463         u32 cid, l5_cid;
2464         struct cnic_local *cp = dev->cnic_priv;
2465
2466         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2467         cid = req->context_id;
2468         l5_cid = req->conn_id;
2469         if (l5_cid >= dev->max_fcoe_conn)
2470                 return -EINVAL;
2471
2472         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2473
2474         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2475                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2476                 return -ENOMEM;
2477         }
2478         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2479         if (!fcoe_disable)
2480                 return -ENOMEM;
2481
2482         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2483         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2484         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2485                                   FCOE_CONNECTION_TYPE, &l5_data);
2486         return ret;
2487 }
2488
2489 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2490 {
2491         struct fcoe_kwqe_conn_destroy *req;
2492         union l5cm_specific_data l5_data;
2493         int ret;
2494         u32 cid, l5_cid;
2495         struct cnic_local *cp = dev->cnic_priv;
2496         struct cnic_context *ctx;
2497         struct fcoe_kcqe kcqe;
2498         struct kcqe *cqes[1];
2499
2500         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2501         cid = req->context_id;
2502         l5_cid = req->conn_id;
2503         if (l5_cid >= dev->max_fcoe_conn)
2504                 return -EINVAL;
2505
2506         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2507
2508         ctx = &cp->ctx_tbl[l5_cid];
2509
2510         init_waitqueue_head(&ctx->waitq);
2511         ctx->wait_cond = 0;
2512
2513         memset(&kcqe, 0, sizeof(kcqe));
2514         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2515         memset(&l5_data, 0, sizeof(l5_data));
2516         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2517                                   FCOE_CONNECTION_TYPE, &l5_data);
2518         if (ret == 0) {
2519                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2520                 if (ctx->wait_cond)
2521                         kcqe.completion_status = 0;
2522         }
2523
2524         set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2525         queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2526
2527         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2528         kcqe.fcoe_conn_id = req->conn_id;
2529         kcqe.fcoe_conn_context_id = cid;
2530
2531         cqes[0] = (struct kcqe *) &kcqe;
2532         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2533         return ret;
2534 }
2535
2536 static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2537 {
2538         struct cnic_local *cp = dev->cnic_priv;
2539         u32 i;
2540
2541         for (i = start_cid; i < cp->max_cid_space; i++) {
2542                 struct cnic_context *ctx = &cp->ctx_tbl[i];
2543                 int j;
2544
2545                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2546                         msleep(10);
2547
2548                 for (j = 0; j < 5; j++) {
2549                         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2550                                 break;
2551                         msleep(20);
2552                 }
2553
2554                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2555                         netdev_warn(dev->netdev, "CID %x not deleted\n",
2556                                    ctx->cid);
2557         }
2558 }
2559
2560 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2561 {
2562         union l5cm_specific_data l5_data;
2563         struct cnic_local *cp = dev->cnic_priv;
2564         struct bnx2x *bp = netdev_priv(dev->netdev);
2565         int ret;
2566         u32 cid;
2567
2568         cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2569
2570         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2571
2572         memset(&l5_data, 0, sizeof(l5_data));
2573         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2574                                   FCOE_CONNECTION_TYPE, &l5_data);
2575         return ret;
2576 }
2577
2578 static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2579 {
2580         struct cnic_local *cp = dev->cnic_priv;
2581         struct kcqe kcqe;
2582         struct kcqe *cqes[1];
2583         u32 cid;
2584         u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2585         u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2586         u32 kcqe_op;
2587         int ulp_type;
2588
2589         cid = kwqe->kwqe_info0;
2590         memset(&kcqe, 0, sizeof(kcqe));
2591
2592         if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2593                 u32 l5_cid = 0;
2594
2595                 ulp_type = CNIC_ULP_FCOE;
2596                 if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2597                         struct fcoe_kwqe_conn_enable_disable *req;
2598
2599                         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2600                         kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2601                         cid = req->context_id;
2602                         l5_cid = req->conn_id;
2603                 } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2604                         kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2605                 } else {
2606                         return;
2607                 }
2608                 kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2609                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2610                 kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2611                 kcqe.kcqe_info2 = cid;
2612                 kcqe.kcqe_info0 = l5_cid;
2613
2614         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2615                 ulp_type = CNIC_ULP_ISCSI;
2616                 if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2617                         cid = kwqe->kwqe_info1;
2618
2619                 kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2620                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2621                 kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2622                 kcqe.kcqe_info2 = cid;
2623                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2624
2625         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2626                 struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2627
2628                 ulp_type = CNIC_ULP_L4;
2629                 if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2630                         kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2631                 else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2632                         kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2633                 else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2634                         kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2635                 else
2636                         return;
2637
2638                 kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2639                                     KCQE_FLAGS_LAYER_MASK_L4;
2640                 l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2641                 l4kcqe->cid = cid;
2642                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2643         } else {
2644                 return;
2645         }
2646
2647         cqes[0] = &kcqe;
2648         cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2649 }
2650
2651 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2652                                          struct kwqe *wqes[], u32 num_wqes)
2653 {
2654         int i, work, ret;
2655         u32 opcode;
2656         struct kwqe *kwqe;
2657
2658         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2659                 return -EAGAIN;         /* bnx2 is down */
2660
2661         for (i = 0; i < num_wqes; ) {
2662                 kwqe = wqes[i];
2663                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2664                 work = 1;
2665
2666                 switch (opcode) {
2667                 case ISCSI_KWQE_OPCODE_INIT1:
2668                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2669                         break;
2670                 case ISCSI_KWQE_OPCODE_INIT2:
2671                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2672                         break;
2673                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2674                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2675                                                      num_wqes - i, &work);
2676                         break;
2677                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2678                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2679                         break;
2680                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2681                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2682                         break;
2683                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2684                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2685                                                  &work);
2686                         break;
2687                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2688                         ret = cnic_bnx2x_close(dev, kwqe);
2689                         break;
2690                 case L4_KWQE_OPCODE_VALUE_RESET:
2691                         ret = cnic_bnx2x_reset(dev, kwqe);
2692                         break;
2693                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2694                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2695                         break;
2696                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2697                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2698                         break;
2699                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2700                         ret = 0;
2701                         break;
2702                 default:
2703                         ret = 0;
2704                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2705                                    opcode);
2706                         break;
2707                 }
2708                 if (ret < 0) {
2709                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2710                                    opcode);
2711
2712                         /* Possibly bnx2x parity error, send completion
2713                          * to ulp drivers with error code to speed up
2714                          * cleanup and reset recovery.
2715                          */
2716                         if (ret == -EIO || ret == -EAGAIN)
2717                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2718                 }
2719                 i += work;
2720         }
2721         return 0;
2722 }
2723
2724 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2725                                         struct kwqe *wqes[], u32 num_wqes)
2726 {
2727         struct bnx2x *bp = netdev_priv(dev->netdev);
2728         int i, work, ret;
2729         u32 opcode;
2730         struct kwqe *kwqe;
2731
2732         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2733                 return -EAGAIN;         /* bnx2 is down */
2734
2735         if (!BNX2X_CHIP_IS_E2_PLUS(bp))
2736                 return -EINVAL;
2737
2738         for (i = 0; i < num_wqes; ) {
2739                 kwqe = wqes[i];
2740                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2741                 work = 1;
2742
2743                 switch (opcode) {
2744                 case FCOE_KWQE_OPCODE_INIT1:
2745                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2746                                                     num_wqes - i, &work);
2747                         break;
2748                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2749                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2750                                                     num_wqes - i, &work);
2751                         break;
2752                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2753                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2754                         break;
2755                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2756                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2757                         break;
2758                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2759                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2760                         break;
2761                 case FCOE_KWQE_OPCODE_DESTROY:
2762                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2763                         break;
2764                 case FCOE_KWQE_OPCODE_STAT:
2765                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2766                         break;
2767                 default:
2768                         ret = 0;
2769                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2770                                    opcode);
2771                         break;
2772                 }
2773                 if (ret < 0) {
2774                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2775                                    opcode);
2776
2777                         /* Possibly bnx2x parity error, send completion
2778                          * to ulp drivers with error code to speed up
2779                          * cleanup and reset recovery.
2780                          */
2781                         if (ret == -EIO || ret == -EAGAIN)
2782                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2783                 }
2784                 i += work;
2785         }
2786         return 0;
2787 }
2788
2789 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2790                                    u32 num_wqes)
2791 {
2792         int ret = -EINVAL;
2793         u32 layer_code;
2794
2795         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2796                 return -EAGAIN;         /* bnx2x is down */
2797
2798         if (!num_wqes)
2799                 return 0;
2800
2801         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2802         switch (layer_code) {
2803         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2804         case KWQE_FLAGS_LAYER_MASK_L4:
2805         case KWQE_FLAGS_LAYER_MASK_L2:
2806                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2807                 break;
2808
2809         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2810                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2811                 break;
2812         }
2813         return ret;
2814 }
2815
2816 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2817 {
2818         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2819                 return KCQE_FLAGS_LAYER_MASK_L4;
2820
2821         return opflag & KCQE_FLAGS_LAYER_MASK;
2822 }
2823
2824 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2825 {
2826         struct cnic_local *cp = dev->cnic_priv;
2827         int i, j, comp = 0;
2828
2829         i = 0;
2830         j = 1;
2831         while (num_cqes) {
2832                 struct cnic_ulp_ops *ulp_ops;
2833                 int ulp_type;
2834                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2835                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2836
2837                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2838                         comp++;
2839
2840                 while (j < num_cqes) {
2841                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2842
2843                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2844                                 break;
2845
2846                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2847                                 comp++;
2848                         j++;
2849                 }
2850
2851                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2852                         ulp_type = CNIC_ULP_RDMA;
2853                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2854                         ulp_type = CNIC_ULP_ISCSI;
2855                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2856                         ulp_type = CNIC_ULP_FCOE;
2857                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2858                         ulp_type = CNIC_ULP_L4;
2859                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2860                         goto end;
2861                 else {
2862                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2863                                    kcqe_op_flag);
2864                         goto end;
2865                 }
2866
2867                 rcu_read_lock();
2868                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2869                 if (likely(ulp_ops)) {
2870                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2871                                                   cp->completed_kcq + i, j);
2872                 }
2873                 rcu_read_unlock();
2874 end:
2875                 num_cqes -= j;
2876                 i += j;
2877                 j = 1;
2878         }
2879         if (unlikely(comp))
2880                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2881 }
2882
2883 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2884 {
2885         struct cnic_local *cp = dev->cnic_priv;
2886         u16 i, ri, hw_prod, last;
2887         struct kcqe *kcqe;
2888         int kcqe_cnt = 0, last_cnt = 0;
2889
2890         i = ri = last = info->sw_prod_idx;
2891         ri &= MAX_KCQ_IDX;
2892         hw_prod = *info->hw_prod_idx_ptr;
2893         hw_prod = info->hw_idx(hw_prod);
2894
2895         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2896                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2897                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2898                 i = info->next_idx(i);
2899                 ri = i & MAX_KCQ_IDX;
2900                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2901                         last_cnt = kcqe_cnt;
2902                         last = i;
2903                 }
2904         }
2905
2906         info->sw_prod_idx = last;
2907         return last_cnt;
2908 }
2909
2910 static int cnic_l2_completion(struct cnic_local *cp)
2911 {
2912         u16 hw_cons, sw_cons;
2913         struct cnic_uio_dev *udev = cp->udev;
2914         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2915                                         (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
2916         u32 cmd;
2917         int comp = 0;
2918
2919         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2920                 return 0;
2921
2922         hw_cons = *cp->rx_cons_ptr;
2923         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2924                 hw_cons++;
2925
2926         sw_cons = cp->rx_cons;
2927         while (sw_cons != hw_cons) {
2928                 u8 cqe_fp_flags;
2929
2930                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2931                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2932                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2933                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2934                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2935                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2936                             cmd == RAMROD_CMD_ID_ETH_HALT)
2937                                 comp++;
2938                 }
2939                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2940         }
2941         return comp;
2942 }
2943
2944 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2945 {
2946         u16 rx_cons, tx_cons;
2947         int comp = 0;
2948
2949         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2950                 return;
2951
2952         rx_cons = *cp->rx_cons_ptr;
2953         tx_cons = *cp->tx_cons_ptr;
2954         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2955                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2956                         comp = cnic_l2_completion(cp);
2957
2958                 cp->tx_cons = tx_cons;
2959                 cp->rx_cons = rx_cons;
2960
2961                 if (cp->udev)
2962                         uio_event_notify(&cp->udev->cnic_uinfo);
2963         }
2964         if (comp)
2965                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2966 }
2967
2968 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2969 {
2970         struct cnic_local *cp = dev->cnic_priv;
2971         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2972         int kcqe_cnt;
2973
2974         /* status block index must be read before reading other fields */
2975         rmb();
2976         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2977
2978         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2979
2980                 service_kcqes(dev, kcqe_cnt);
2981
2982                 /* Tell compiler that status_blk fields can change. */
2983                 barrier();
2984                 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2985                 /* status block index must be read first */
2986                 rmb();
2987                 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2988         }
2989
2990         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2991
2992         cnic_chk_pkt_rings(cp);
2993
2994         return status_idx;
2995 }
2996
2997 static int cnic_service_bnx2(void *data, void *status_blk)
2998 {
2999         struct cnic_dev *dev = data;
3000
3001         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3002                 struct status_block *sblk = status_blk;
3003
3004                 return sblk->status_idx;
3005         }
3006
3007         return cnic_service_bnx2_queues(dev);
3008 }
3009
3010 static void cnic_service_bnx2_msix(struct tasklet_struct *t)
3011 {
3012         struct cnic_local *cp = from_tasklet(cp, t, cnic_irq_task);
3013         struct cnic_dev *dev = cp->dev;
3014
3015         cp->last_status_idx = cnic_service_bnx2_queues(dev);
3016
3017         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3018                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3019 }
3020
3021 static void cnic_doirq(struct cnic_dev *dev)
3022 {
3023         struct cnic_local *cp = dev->cnic_priv;
3024
3025         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3026                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
3027
3028                 prefetch(cp->status_blk.gen);
3029                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
3030
3031                 tasklet_schedule(&cp->cnic_irq_task);
3032         }
3033 }
3034
3035 static irqreturn_t cnic_irq(int irq, void *dev_instance)
3036 {
3037         struct cnic_dev *dev = dev_instance;
3038         struct cnic_local *cp = dev->cnic_priv;
3039
3040         if (cp->ack_int)
3041                 cp->ack_int(dev);
3042
3043         cnic_doirq(dev);
3044
3045         return IRQ_HANDLED;
3046 }
3047
3048 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
3049                                       u16 index, u8 op, u8 update)
3050 {
3051         struct bnx2x *bp = netdev_priv(dev->netdev);
3052         u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp) * 32 +
3053                        COMMAND_REG_INT_ACK);
3054         struct igu_ack_register igu_ack;
3055
3056         igu_ack.status_block_index = index;
3057         igu_ack.sb_id_and_flags =
3058                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
3059                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3060                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3061                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3062
3063         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3064 }
3065
3066 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3067                             u16 index, u8 op, u8 update)
3068 {
3069         struct igu_regular cmd_data;
3070         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3071
3072         cmd_data.sb_id_and_flags =
3073                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3074                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3075                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
3076                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3077
3078
3079         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3080 }
3081
3082 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3083 {
3084         struct cnic_local *cp = dev->cnic_priv;
3085
3086         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3087                            IGU_INT_DISABLE, 0);
3088 }
3089
3090 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3091 {
3092         struct cnic_local *cp = dev->cnic_priv;
3093
3094         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3095                         IGU_INT_DISABLE, 0);
3096 }
3097
3098 static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
3099 {
3100         struct cnic_local *cp = dev->cnic_priv;
3101
3102         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
3103                            IGU_INT_ENABLE, 1);
3104 }
3105
3106 static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
3107 {
3108         struct cnic_local *cp = dev->cnic_priv;
3109
3110         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
3111                         IGU_INT_ENABLE, 1);
3112 }
3113
3114 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3115 {
3116         u32 last_status = *info->status_idx_ptr;
3117         int kcqe_cnt;
3118
3119         /* status block index must be read before reading the KCQ */
3120         rmb();
3121         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3122
3123                 service_kcqes(dev, kcqe_cnt);
3124
3125                 /* Tell compiler that sblk fields can change. */
3126                 barrier();
3127
3128                 last_status = *info->status_idx_ptr;
3129                 /* status block index must be read before reading the KCQ */
3130                 rmb();
3131         }
3132         return last_status;
3133 }
3134
3135 static void cnic_service_bnx2x_bh(struct tasklet_struct *t)
3136 {
3137         struct cnic_local *cp = from_tasklet(cp, t, cnic_irq_task);
3138         struct cnic_dev *dev = cp->dev;
3139         struct bnx2x *bp = netdev_priv(dev->netdev);
3140         u32 status_idx, new_status_idx;
3141
3142         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3143                 return;
3144
3145         while (1) {
3146                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3147
3148                 CNIC_WR16(dev, cp->kcq1.io_addr,
3149                           cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3150
3151                 if (!CNIC_SUPPORTS_FCOE(bp)) {
3152                         cp->arm_int(dev, status_idx);
3153                         break;
3154                 }
3155
3156                 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3157
3158                 if (new_status_idx != status_idx)
3159                         continue;
3160
3161                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3162                           MAX_KCQ_IDX);
3163
3164                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3165                                 status_idx, IGU_INT_ENABLE, 1);
3166
3167                 break;
3168         }
3169 }
3170
3171 static int cnic_service_bnx2x(void *data, void *status_blk)
3172 {
3173         struct cnic_dev *dev = data;
3174         struct cnic_local *cp = dev->cnic_priv;
3175
3176         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3177                 cnic_doirq(dev);
3178
3179         cnic_chk_pkt_rings(cp);
3180
3181         return 0;
3182 }
3183
3184 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3185 {
3186         struct cnic_ulp_ops *ulp_ops;
3187
3188         if (if_type == CNIC_ULP_ISCSI)
3189                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3190
3191         mutex_lock(&cnic_lock);
3192         ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3193                                             lockdep_is_held(&cnic_lock));
3194         if (!ulp_ops) {
3195                 mutex_unlock(&cnic_lock);
3196                 return;
3197         }
3198         set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3199         mutex_unlock(&cnic_lock);
3200
3201         if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3202                 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3203
3204         clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3205 }
3206
3207 static void cnic_ulp_stop(struct cnic_dev *dev)
3208 {
3209         struct cnic_local *cp = dev->cnic_priv;
3210         int if_type;
3211
3212         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3213                 cnic_ulp_stop_one(cp, if_type);
3214 }
3215
3216 static void cnic_ulp_start(struct cnic_dev *dev)
3217 {
3218         struct cnic_local *cp = dev->cnic_priv;
3219         int if_type;
3220
3221         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3222                 struct cnic_ulp_ops *ulp_ops;
3223
3224                 mutex_lock(&cnic_lock);
3225                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3226                                                     lockdep_is_held(&cnic_lock));
3227                 if (!ulp_ops || !ulp_ops->cnic_start) {
3228                         mutex_unlock(&cnic_lock);
3229                         continue;
3230                 }
3231                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3232                 mutex_unlock(&cnic_lock);
3233
3234                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3235                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3236
3237                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3238         }
3239 }
3240
3241 static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3242 {
3243         struct cnic_local *cp = dev->cnic_priv;
3244         struct cnic_ulp_ops *ulp_ops;
3245         int rc;
3246
3247         mutex_lock(&cnic_lock);
3248         ulp_ops = rcu_dereference_protected(cp->ulp_ops[ulp_type],
3249                                             lockdep_is_held(&cnic_lock));
3250         if (ulp_ops && ulp_ops->cnic_get_stats)
3251                 rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3252         else
3253                 rc = -ENODEV;
3254         mutex_unlock(&cnic_lock);
3255         return rc;
3256 }
3257
3258 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3259 {
3260         struct cnic_dev *dev = data;
3261         int ulp_type = CNIC_ULP_ISCSI;
3262
3263         switch (info->cmd) {
3264         case CNIC_CTL_STOP_CMD:
3265                 cnic_hold(dev);
3266
3267                 cnic_ulp_stop(dev);
3268                 cnic_stop_hw(dev);
3269
3270                 cnic_put(dev);
3271                 break;
3272         case CNIC_CTL_START_CMD:
3273                 cnic_hold(dev);
3274
3275                 if (!cnic_start_hw(dev))
3276                         cnic_ulp_start(dev);
3277
3278                 cnic_put(dev);
3279                 break;
3280         case CNIC_CTL_STOP_ISCSI_CMD: {
3281                 struct cnic_local *cp = dev->cnic_priv;
3282                 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3283                 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3284                 break;
3285         }
3286         case CNIC_CTL_COMPLETION_CMD: {
3287                 struct cnic_ctl_completion *comp = &info->data.comp;
3288                 u32 cid = BNX2X_SW_CID(comp->cid);
3289                 u32 l5_cid;
3290                 struct cnic_local *cp = dev->cnic_priv;
3291
3292                 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
3293                         break;
3294
3295                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3296                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3297
3298                         if (unlikely(comp->error)) {
3299                                 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3300                                 netdev_err(dev->netdev,
3301                                            "CID %x CFC delete comp error %x\n",
3302                                            cid, comp->error);
3303                         }
3304
3305                         ctx->wait_cond = 1;
3306                         wake_up(&ctx->waitq);
3307                 }
3308                 break;
3309         }
3310         case CNIC_CTL_FCOE_STATS_GET_CMD:
3311                 ulp_type = CNIC_ULP_FCOE;
3312                 fallthrough;
3313         case CNIC_CTL_ISCSI_STATS_GET_CMD:
3314                 cnic_hold(dev);
3315                 cnic_copy_ulp_stats(dev, ulp_type);
3316                 cnic_put(dev);
3317                 break;
3318
3319         default:
3320                 return -EINVAL;
3321         }
3322         return 0;
3323 }
3324
3325 static void cnic_ulp_init(struct cnic_dev *dev)
3326 {
3327         int i;
3328         struct cnic_local *cp = dev->cnic_priv;
3329
3330         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3331                 struct cnic_ulp_ops *ulp_ops;
3332
3333                 mutex_lock(&cnic_lock);
3334                 ulp_ops = cnic_ulp_tbl_prot(i);
3335                 if (!ulp_ops || !ulp_ops->cnic_init) {
3336                         mutex_unlock(&cnic_lock);
3337                         continue;
3338                 }
3339                 ulp_get(ulp_ops);
3340                 mutex_unlock(&cnic_lock);
3341
3342                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3343                         ulp_ops->cnic_init(dev);
3344
3345                 ulp_put(ulp_ops);
3346         }
3347 }
3348
3349 static void cnic_ulp_exit(struct cnic_dev *dev)
3350 {
3351         int i;
3352         struct cnic_local *cp = dev->cnic_priv;
3353
3354         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3355                 struct cnic_ulp_ops *ulp_ops;
3356
3357                 mutex_lock(&cnic_lock);
3358                 ulp_ops = cnic_ulp_tbl_prot(i);
3359                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3360                         mutex_unlock(&cnic_lock);
3361                         continue;
3362                 }
3363                 ulp_get(ulp_ops);
3364                 mutex_unlock(&cnic_lock);
3365
3366                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3367                         ulp_ops->cnic_exit(dev);
3368
3369                 ulp_put(ulp_ops);
3370         }
3371 }
3372
3373 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3374 {
3375         struct cnic_dev *dev = csk->dev;
3376         struct l4_kwq_offload_pg *l4kwqe;
3377         struct kwqe *wqes[1];
3378
3379         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3380         memset(l4kwqe, 0, sizeof(*l4kwqe));
3381         wqes[0] = (struct kwqe *) l4kwqe;
3382
3383         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3384         l4kwqe->flags =
3385                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3386         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3387
3388         l4kwqe->da0 = csk->ha[0];
3389         l4kwqe->da1 = csk->ha[1];
3390         l4kwqe->da2 = csk->ha[2];
3391         l4kwqe->da3 = csk->ha[3];
3392         l4kwqe->da4 = csk->ha[4];
3393         l4kwqe->da5 = csk->ha[5];
3394
3395         l4kwqe->sa0 = dev->mac_addr[0];
3396         l4kwqe->sa1 = dev->mac_addr[1];
3397         l4kwqe->sa2 = dev->mac_addr[2];
3398         l4kwqe->sa3 = dev->mac_addr[3];
3399         l4kwqe->sa4 = dev->mac_addr[4];
3400         l4kwqe->sa5 = dev->mac_addr[5];
3401
3402         l4kwqe->etype = ETH_P_IP;
3403         l4kwqe->ipid_start = DEF_IPID_START;
3404         l4kwqe->host_opaque = csk->l5_cid;
3405
3406         if (csk->vlan_id) {
3407                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3408                 l4kwqe->vlan_tag = csk->vlan_id;
3409                 l4kwqe->l2hdr_nbytes += 4;
3410         }
3411
3412         return dev->submit_kwqes(dev, wqes, 1);
3413 }
3414
3415 static int cnic_cm_update_pg(struct cnic_sock *csk)
3416 {
3417         struct cnic_dev *dev = csk->dev;
3418         struct l4_kwq_update_pg *l4kwqe;
3419         struct kwqe *wqes[1];
3420
3421         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3422         memset(l4kwqe, 0, sizeof(*l4kwqe));
3423         wqes[0] = (struct kwqe *) l4kwqe;
3424
3425         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3426         l4kwqe->flags =
3427                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3428         l4kwqe->pg_cid = csk->pg_cid;
3429
3430         l4kwqe->da0 = csk->ha[0];
3431         l4kwqe->da1 = csk->ha[1];
3432         l4kwqe->da2 = csk->ha[2];
3433         l4kwqe->da3 = csk->ha[3];
3434         l4kwqe->da4 = csk->ha[4];
3435         l4kwqe->da5 = csk->ha[5];
3436
3437         l4kwqe->pg_host_opaque = csk->l5_cid;
3438         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3439
3440         return dev->submit_kwqes(dev, wqes, 1);
3441 }
3442
3443 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3444 {
3445         struct cnic_dev *dev = csk->dev;
3446         struct l4_kwq_upload *l4kwqe;
3447         struct kwqe *wqes[1];
3448
3449         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3450         memset(l4kwqe, 0, sizeof(*l4kwqe));
3451         wqes[0] = (struct kwqe *) l4kwqe;
3452
3453         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3454         l4kwqe->flags =
3455                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3456         l4kwqe->cid = csk->pg_cid;
3457
3458         return dev->submit_kwqes(dev, wqes, 1);
3459 }
3460
3461 static int cnic_cm_conn_req(struct cnic_sock *csk)
3462 {
3463         struct cnic_dev *dev = csk->dev;
3464         struct l4_kwq_connect_req1 *l4kwqe1;
3465         struct l4_kwq_connect_req2 *l4kwqe2;
3466         struct l4_kwq_connect_req3 *l4kwqe3;
3467         struct kwqe *wqes[3];
3468         u8 tcp_flags = 0;
3469         int num_wqes = 2;
3470
3471         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3472         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3473         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3474         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3475         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3476         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3477
3478         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3479         l4kwqe3->flags =
3480                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3481         l4kwqe3->ka_timeout = csk->ka_timeout;
3482         l4kwqe3->ka_interval = csk->ka_interval;
3483         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3484         l4kwqe3->tos = csk->tos;
3485         l4kwqe3->ttl = csk->ttl;
3486         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3487         l4kwqe3->pmtu = csk->mtu;
3488         l4kwqe3->rcv_buf = csk->rcv_buf;
3489         l4kwqe3->snd_buf = csk->snd_buf;
3490         l4kwqe3->seed = csk->seed;
3491
3492         wqes[0] = (struct kwqe *) l4kwqe1;
3493         if (test_bit(SK_F_IPV6, &csk->flags)) {
3494                 wqes[1] = (struct kwqe *) l4kwqe2;
3495                 wqes[2] = (struct kwqe *) l4kwqe3;
3496                 num_wqes = 3;
3497
3498                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3499                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3500                 l4kwqe2->flags =
3501                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3502                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3503                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3504                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3505                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3506                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3507                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3508                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3509                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3510                                sizeof(struct tcphdr);
3511         } else {
3512                 wqes[1] = (struct kwqe *) l4kwqe3;
3513                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3514                                sizeof(struct tcphdr);
3515         }
3516
3517         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3518         l4kwqe1->flags =
3519                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3520                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3521         l4kwqe1->cid = csk->cid;
3522         l4kwqe1->pg_cid = csk->pg_cid;
3523         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3524         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3525         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3526         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3527         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3528                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3529         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3530                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3531         if (csk->tcp_flags & SK_TCP_NAGLE)
3532                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3533         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3534                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3535         if (csk->tcp_flags & SK_TCP_SACK)
3536                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3537         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3538                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3539
3540         l4kwqe1->tcp_flags = tcp_flags;
3541
3542         return dev->submit_kwqes(dev, wqes, num_wqes);
3543 }
3544
3545 static int cnic_cm_close_req(struct cnic_sock *csk)
3546 {
3547         struct cnic_dev *dev = csk->dev;
3548         struct l4_kwq_close_req *l4kwqe;
3549         struct kwqe *wqes[1];
3550
3551         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3552         memset(l4kwqe, 0, sizeof(*l4kwqe));
3553         wqes[0] = (struct kwqe *) l4kwqe;
3554
3555         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3556         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3557         l4kwqe->cid = csk->cid;
3558
3559         return dev->submit_kwqes(dev, wqes, 1);
3560 }
3561
3562 static int cnic_cm_abort_req(struct cnic_sock *csk)
3563 {
3564         struct cnic_dev *dev = csk->dev;
3565         struct l4_kwq_reset_req *l4kwqe;
3566         struct kwqe *wqes[1];
3567
3568         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3569         memset(l4kwqe, 0, sizeof(*l4kwqe));
3570         wqes[0] = (struct kwqe *) l4kwqe;
3571
3572         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3573         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3574         l4kwqe->cid = csk->cid;
3575
3576         return dev->submit_kwqes(dev, wqes, 1);
3577 }
3578
3579 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3580                           u32 l5_cid, struct cnic_sock **csk, void *context)
3581 {
3582         struct cnic_local *cp = dev->cnic_priv;
3583         struct cnic_sock *csk1;
3584
3585         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3586                 return -EINVAL;
3587
3588         if (cp->ctx_tbl) {
3589                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3590
3591                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3592                         return -EAGAIN;
3593         }
3594
3595         csk1 = &cp->csk_tbl[l5_cid];
3596         if (atomic_read(&csk1->ref_count))
3597                 return -EAGAIN;
3598
3599         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3600                 return -EBUSY;
3601
3602         csk1->dev = dev;
3603         csk1->cid = cid;
3604         csk1->l5_cid = l5_cid;
3605         csk1->ulp_type = ulp_type;
3606         csk1->context = context;
3607
3608         csk1->ka_timeout = DEF_KA_TIMEOUT;
3609         csk1->ka_interval = DEF_KA_INTERVAL;
3610         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3611         csk1->tos = DEF_TOS;
3612         csk1->ttl = DEF_TTL;
3613         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3614         csk1->rcv_buf = DEF_RCV_BUF;
3615         csk1->snd_buf = DEF_SND_BUF;
3616         csk1->seed = DEF_SEED;
3617         csk1->tcp_flags = 0;
3618
3619         *csk = csk1;
3620         return 0;
3621 }
3622
3623 static void cnic_cm_cleanup(struct cnic_sock *csk)
3624 {
3625         if (csk->src_port) {
3626                 struct cnic_dev *dev = csk->dev;
3627                 struct cnic_local *cp = dev->cnic_priv;
3628
3629                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3630                 csk->src_port = 0;
3631         }
3632 }
3633
3634 static void cnic_close_conn(struct cnic_sock *csk)
3635 {
3636         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3637                 cnic_cm_upload_pg(csk);
3638                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3639         }
3640         cnic_cm_cleanup(csk);
3641 }
3642
3643 static int cnic_cm_destroy(struct cnic_sock *csk)
3644 {
3645         if (!cnic_in_use(csk))
3646                 return -EINVAL;
3647
3648         csk_hold(csk);
3649         clear_bit(SK_F_INUSE, &csk->flags);
3650         smp_mb__after_atomic();
3651         while (atomic_read(&csk->ref_count) != 1)
3652                 msleep(1);
3653         cnic_cm_cleanup(csk);
3654
3655         csk->flags = 0;
3656         csk_put(csk);
3657         return 0;
3658 }
3659
3660 static inline u16 cnic_get_vlan(struct net_device *dev,
3661                                 struct net_device **vlan_dev)
3662 {
3663         if (is_vlan_dev(dev)) {
3664                 *vlan_dev = vlan_dev_real_dev(dev);
3665                 return vlan_dev_vlan_id(dev);
3666         }
3667         *vlan_dev = dev;
3668         return 0;
3669 }
3670
3671 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3672                              struct dst_entry **dst)
3673 {
3674 #if defined(CONFIG_INET)
3675         struct rtable *rt;
3676
3677         rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3678         if (!IS_ERR(rt)) {
3679                 *dst = &rt->dst;
3680                 return 0;
3681         }
3682         return PTR_ERR(rt);
3683 #else
3684         return -ENETUNREACH;
3685 #endif
3686 }
3687
3688 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3689                              struct dst_entry **dst)
3690 {
3691 #if IS_ENABLED(CONFIG_IPV6)
3692         struct flowi6 fl6;
3693
3694         memset(&fl6, 0, sizeof(fl6));
3695         fl6.daddr = dst_addr->sin6_addr;
3696         if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3697                 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3698
3699         *dst = ip6_route_output(&init_net, NULL, &fl6);
3700         if ((*dst)->error) {
3701                 dst_release(*dst);
3702                 *dst = NULL;
3703                 return -ENETUNREACH;
3704         } else
3705                 return 0;
3706 #endif
3707
3708         return -ENETUNREACH;
3709 }
3710
3711 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3712                                            int ulp_type)
3713 {
3714         struct cnic_dev *dev = NULL;
3715         struct dst_entry *dst;
3716         struct net_device *netdev = NULL;
3717         int err = -ENETUNREACH;
3718
3719         if (dst_addr->sin_family == AF_INET)
3720                 err = cnic_get_v4_route(dst_addr, &dst);
3721         else if (dst_addr->sin_family == AF_INET6) {
3722                 struct sockaddr_in6 *dst_addr6 =
3723                         (struct sockaddr_in6 *) dst_addr;
3724
3725                 err = cnic_get_v6_route(dst_addr6, &dst);
3726         } else
3727                 return NULL;
3728
3729         if (err)
3730                 return NULL;
3731
3732         if (!dst->dev)
3733                 goto done;
3734
3735         cnic_get_vlan(dst->dev, &netdev);
3736
3737         dev = cnic_from_netdev(netdev);
3738
3739 done:
3740         dst_release(dst);
3741         if (dev)
3742                 cnic_put(dev);
3743         return dev;
3744 }
3745
3746 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3747 {
3748         struct cnic_dev *dev = csk->dev;
3749         struct cnic_local *cp = dev->cnic_priv;
3750
3751         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3752 }
3753
3754 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3755 {
3756         struct cnic_dev *dev = csk->dev;
3757         struct cnic_local *cp = dev->cnic_priv;
3758         int is_v6, rc = 0;
3759         struct dst_entry *dst = NULL;
3760         struct net_device *realdev;
3761         __be16 local_port;
3762         u32 port_id;
3763
3764         if (saddr->local.v6.sin6_family == AF_INET6 &&
3765             saddr->remote.v6.sin6_family == AF_INET6)
3766                 is_v6 = 1;
3767         else if (saddr->local.v4.sin_family == AF_INET &&
3768                  saddr->remote.v4.sin_family == AF_INET)
3769                 is_v6 = 0;
3770         else
3771                 return -EINVAL;
3772
3773         clear_bit(SK_F_IPV6, &csk->flags);
3774
3775         if (is_v6) {
3776                 set_bit(SK_F_IPV6, &csk->flags);
3777                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3778
3779                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3780                        sizeof(struct in6_addr));
3781                 csk->dst_port = saddr->remote.v6.sin6_port;
3782                 local_port = saddr->local.v6.sin6_port;
3783
3784         } else {
3785                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3786
3787                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3788                 csk->dst_port = saddr->remote.v4.sin_port;
3789                 local_port = saddr->local.v4.sin_port;
3790         }
3791
3792         csk->vlan_id = 0;
3793         csk->mtu = dev->netdev->mtu;
3794         if (dst && dst->dev) {
3795                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3796                 if (realdev == dev->netdev) {
3797                         csk->vlan_id = vlan;
3798                         csk->mtu = dst_mtu(dst);
3799                 }
3800         }
3801
3802         port_id = be16_to_cpu(local_port);
3803         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3804             port_id < CNIC_LOCAL_PORT_MAX) {
3805                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3806                         port_id = 0;
3807         } else
3808                 port_id = 0;
3809
3810         if (!port_id) {
3811                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3812                 if (port_id == -1) {
3813                         rc = -ENOMEM;
3814                         goto err_out;
3815                 }
3816                 local_port = cpu_to_be16(port_id);
3817         }
3818         csk->src_port = local_port;
3819
3820 err_out:
3821         dst_release(dst);
3822         return rc;
3823 }
3824
3825 static void cnic_init_csk_state(struct cnic_sock *csk)
3826 {
3827         csk->state = 0;
3828         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3829         clear_bit(SK_F_CLOSING, &csk->flags);
3830 }
3831
3832 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3833 {
3834         struct cnic_local *cp = csk->dev->cnic_priv;
3835         int err = 0;
3836
3837         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3838                 return -EOPNOTSUPP;
3839
3840         if (!cnic_in_use(csk))
3841                 return -EINVAL;
3842
3843         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3844                 return -EINVAL;
3845
3846         cnic_init_csk_state(csk);
3847
3848         err = cnic_get_route(csk, saddr);
3849         if (err)
3850                 goto err_out;
3851
3852         err = cnic_resolve_addr(csk, saddr);
3853         if (!err)
3854                 return 0;
3855
3856 err_out:
3857         clear_bit(SK_F_CONNECT_START, &csk->flags);
3858         return err;
3859 }
3860
3861 static int cnic_cm_abort(struct cnic_sock *csk)
3862 {
3863         struct cnic_local *cp = csk->dev->cnic_priv;
3864         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3865
3866         if (!cnic_in_use(csk))
3867                 return -EINVAL;
3868
3869         if (cnic_abort_prep(csk))
3870                 return cnic_cm_abort_req(csk);
3871
3872         /* Getting here means that we haven't started connect, or
3873          * connect was not successful, or it has been reset by the target.
3874          */
3875
3876         cp->close_conn(csk, opcode);
3877         if (csk->state != opcode) {
3878                 /* Wait for remote reset sequence to complete */
3879                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3880                         msleep(1);
3881
3882                 return -EALREADY;
3883         }
3884
3885         return 0;
3886 }
3887
3888 static int cnic_cm_close(struct cnic_sock *csk)
3889 {
3890         if (!cnic_in_use(csk))
3891                 return -EINVAL;
3892
3893         if (cnic_close_prep(csk)) {
3894                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3895                 return cnic_cm_close_req(csk);
3896         } else {
3897                 /* Wait for remote reset sequence to complete */
3898                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3899                         msleep(1);
3900
3901                 return -EALREADY;
3902         }
3903         return 0;
3904 }
3905
3906 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3907                            u8 opcode)
3908 {
3909         struct cnic_ulp_ops *ulp_ops;
3910         int ulp_type = csk->ulp_type;
3911
3912         rcu_read_lock();
3913         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3914         if (ulp_ops) {
3915                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3916                         ulp_ops->cm_connect_complete(csk);
3917                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3918                         ulp_ops->cm_close_complete(csk);
3919                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3920                         ulp_ops->cm_remote_abort(csk);
3921                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3922                         ulp_ops->cm_abort_complete(csk);
3923                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3924                         ulp_ops->cm_remote_close(csk);
3925         }
3926         rcu_read_unlock();
3927 }
3928
3929 static int cnic_cm_set_pg(struct cnic_sock *csk)
3930 {
3931         if (cnic_offld_prep(csk)) {
3932                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3933                         cnic_cm_update_pg(csk);
3934                 else
3935                         cnic_cm_offload_pg(csk);
3936         }
3937         return 0;
3938 }
3939
3940 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3941 {
3942         struct cnic_local *cp = dev->cnic_priv;
3943         u32 l5_cid = kcqe->pg_host_opaque;
3944         u8 opcode = kcqe->op_code;
3945         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3946
3947         csk_hold(csk);
3948         if (!cnic_in_use(csk))
3949                 goto done;
3950
3951         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3952                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3953                 goto done;
3954         }
3955         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3956         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3957                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3958                 cnic_cm_upcall(cp, csk,
3959                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3960                 goto done;
3961         }
3962
3963         csk->pg_cid = kcqe->pg_cid;
3964         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3965         cnic_cm_conn_req(csk);
3966
3967 done:
3968         csk_put(csk);
3969 }
3970
3971 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3972 {
3973         struct cnic_local *cp = dev->cnic_priv;
3974         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3975         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3976         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3977
3978         ctx->timestamp = jiffies;
3979         ctx->wait_cond = 1;
3980         wake_up(&ctx->waitq);
3981 }
3982
3983 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3984 {
3985         struct cnic_local *cp = dev->cnic_priv;
3986         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3987         u8 opcode = l4kcqe->op_code;
3988         u32 l5_cid;
3989         struct cnic_sock *csk;
3990
3991         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3992                 cnic_process_fcoe_term_conn(dev, kcqe);
3993                 return;
3994         }
3995         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3996             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3997                 cnic_cm_process_offld_pg(dev, l4kcqe);
3998                 return;
3999         }
4000
4001         l5_cid = l4kcqe->conn_id;
4002         if (opcode & 0x80)
4003                 l5_cid = l4kcqe->cid;
4004         if (l5_cid >= MAX_CM_SK_TBL_SZ)
4005                 return;
4006
4007         csk = &cp->csk_tbl[l5_cid];
4008         csk_hold(csk);
4009
4010         if (!cnic_in_use(csk)) {
4011                 csk_put(csk);
4012                 return;
4013         }
4014
4015         switch (opcode) {
4016         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
4017                 if (l4kcqe->status != 0) {
4018                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4019                         cnic_cm_upcall(cp, csk,
4020                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
4021                 }
4022                 break;
4023         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
4024                 if (l4kcqe->status == 0)
4025                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
4026                 else if (l4kcqe->status ==
4027                          L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4028                         set_bit(SK_F_HW_ERR, &csk->flags);
4029
4030                 smp_mb__before_atomic();
4031                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4032                 cnic_cm_upcall(cp, csk, opcode);
4033                 break;
4034
4035         case L5CM_RAMROD_CMD_ID_CLOSE: {
4036                 struct iscsi_kcqe *l5kcqe = (struct iscsi_kcqe *) kcqe;
4037
4038                 if (l4kcqe->status == 0 && l5kcqe->completion_status == 0)
4039                         break;
4040
4041                 netdev_warn(dev->netdev, "RAMROD CLOSE compl with status 0x%x completion status 0x%x\n",
4042                             l4kcqe->status, l5kcqe->completion_status);
4043                 opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
4044         }
4045                 fallthrough;
4046         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4047         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4048         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4049         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4050         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4051                 if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4052                         set_bit(SK_F_HW_ERR, &csk->flags);
4053
4054                 cp->close_conn(csk, opcode);
4055                 break;
4056
4057         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
4058                 /* after we already sent CLOSE_REQ */
4059                 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
4060                     !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
4061                     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
4062                         cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
4063                 else
4064                         cnic_cm_upcall(cp, csk, opcode);
4065                 break;
4066         }
4067         csk_put(csk);
4068 }
4069
4070 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
4071 {
4072         struct cnic_dev *dev = data;
4073         int i;
4074
4075         for (i = 0; i < num; i++)
4076                 cnic_cm_process_kcqe(dev, kcqe[i]);
4077 }
4078
4079 static struct cnic_ulp_ops cm_ulp_ops = {
4080         .indicate_kcqes         = cnic_cm_indicate_kcqe,
4081 };
4082
4083 static void cnic_cm_free_mem(struct cnic_dev *dev)
4084 {
4085         struct cnic_local *cp = dev->cnic_priv;
4086
4087         kvfree(cp->csk_tbl);
4088         cp->csk_tbl = NULL;
4089         cnic_free_id_tbl(&cp->csk_port_tbl);
4090 }
4091
4092 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
4093 {
4094         struct cnic_local *cp = dev->cnic_priv;
4095         u32 port_id;
4096         int i;
4097
4098         cp->csk_tbl = kvcalloc(MAX_CM_SK_TBL_SZ, sizeof(struct cnic_sock),
4099                                GFP_KERNEL);
4100         if (!cp->csk_tbl)
4101                 return -ENOMEM;
4102
4103         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++)
4104                 atomic_set(&cp->csk_tbl[i].ref_count, 0);
4105
4106         port_id = get_random_u32_below(CNIC_LOCAL_PORT_RANGE);
4107         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4108                              CNIC_LOCAL_PORT_MIN, port_id)) {
4109                 cnic_cm_free_mem(dev);
4110                 return -ENOMEM;
4111         }
4112         return 0;
4113 }
4114
4115 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
4116 {
4117         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
4118                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
4119                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
4120                 csk->state = opcode;
4121         }
4122
4123         /* 1. If event opcode matches the expected event in csk->state
4124          * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
4125          *    event
4126          * 3. If the expected event is 0, meaning the connection was never
4127          *    never established, we accept the opcode from cm_abort.
4128          */
4129         if (opcode == csk->state || csk->state == 0 ||
4130             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
4131             csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4132                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
4133                         if (csk->state == 0)
4134                                 csk->state = opcode;
4135                         return 1;
4136                 }
4137         }
4138         return 0;
4139 }
4140
4141 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
4142 {
4143         struct cnic_dev *dev = csk->dev;
4144         struct cnic_local *cp = dev->cnic_priv;
4145
4146         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
4147                 cnic_cm_upcall(cp, csk, opcode);
4148                 return;
4149         }
4150
4151         clear_bit(SK_F_CONNECT_START, &csk->flags);
4152         cnic_close_conn(csk);
4153         csk->state = opcode;
4154         cnic_cm_upcall(cp, csk, opcode);
4155 }
4156
4157 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
4158 {
4159 }
4160
4161 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
4162 {
4163         u32 seed;
4164
4165         seed = get_random_u32();
4166         cnic_ctx_wr(dev, 45, 0, seed);
4167         return 0;
4168 }
4169
4170 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
4171 {
4172         struct cnic_dev *dev = csk->dev;
4173         struct cnic_local *cp = dev->cnic_priv;
4174         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
4175         union l5cm_specific_data l5_data;
4176         u32 cmd = 0;
4177         int close_complete = 0;
4178
4179         switch (opcode) {
4180         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4181         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4182         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4183                 if (cnic_ready_to_close(csk, opcode)) {
4184                         if (test_bit(SK_F_HW_ERR, &csk->flags))
4185                                 close_complete = 1;
4186                         else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4187                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
4188                         else
4189                                 close_complete = 1;
4190                 }
4191                 break;
4192         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4193                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
4194                 break;
4195         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4196                 close_complete = 1;
4197                 break;
4198         }
4199         if (cmd) {
4200                 memset(&l5_data, 0, sizeof(l5_data));
4201
4202                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
4203                                     &l5_data);
4204         } else if (close_complete) {
4205                 ctx->timestamp = jiffies;
4206                 cnic_close_conn(csk);
4207                 cnic_cm_upcall(cp, csk, csk->state);
4208         }
4209 }
4210
4211 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
4212 {
4213         struct cnic_local *cp = dev->cnic_priv;
4214
4215         if (!cp->ctx_tbl)
4216                 return;
4217
4218         if (!netif_running(dev->netdev))
4219                 return;
4220
4221         cnic_bnx2x_delete_wait(dev, 0);
4222
4223         cancel_delayed_work(&cp->delete_task);
4224         flush_workqueue(cnic_wq);
4225
4226         if (atomic_read(&cp->iscsi_conn) != 0)
4227                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
4228                             atomic_read(&cp->iscsi_conn));
4229 }
4230
4231 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
4232 {
4233         struct bnx2x *bp = netdev_priv(dev->netdev);
4234         u32 pfid = bp->pfid;
4235         u32 port = BP_PORT(bp);
4236
4237         cnic_init_bnx2x_mac(dev);
4238         cnic_bnx2x_set_tcp_options(dev, 0, 1);
4239
4240         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4241                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4242
4243         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4244                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4245         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4246                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4247                 DEF_MAX_DA_COUNT);
4248
4249         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4250                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4251         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4252                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4253         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4254                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4255         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4256                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4257
4258         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4259                 DEF_MAX_CWND);
4260         return 0;
4261 }
4262
4263 static void cnic_delete_task(struct work_struct *work)
4264 {
4265         struct cnic_local *cp;
4266         struct cnic_dev *dev;
4267         u32 i;
4268         int need_resched = 0;
4269
4270         cp = container_of(work, struct cnic_local, delete_task.work);
4271         dev = cp->dev;
4272
4273         if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4274                 struct drv_ctl_info info;
4275
4276                 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4277
4278                 memset(&info, 0, sizeof(struct drv_ctl_info));
4279                 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4280                 cp->ethdev->drv_ctl(dev->netdev, &info);
4281         }
4282
4283         for (i = 0; i < cp->max_cid_space; i++) {
4284                 struct cnic_context *ctx = &cp->ctx_tbl[i];
4285                 int err;
4286
4287                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4288                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4289                         continue;
4290
4291                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4292                         need_resched = 1;
4293                         continue;
4294                 }
4295
4296                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4297                         continue;
4298
4299                 err = cnic_bnx2x_destroy_ramrod(dev, i);
4300
4301                 cnic_free_bnx2x_conn_resc(dev, i);
4302                 if (!err) {
4303                         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4304                                 atomic_dec(&cp->iscsi_conn);
4305
4306                         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4307                 }
4308         }
4309
4310         if (need_resched)
4311                 queue_delayed_work(cnic_wq, &cp->delete_task,
4312                                    msecs_to_jiffies(10));
4313
4314 }
4315
4316 static int cnic_cm_open(struct cnic_dev *dev)
4317 {
4318         struct cnic_local *cp = dev->cnic_priv;
4319         int err;
4320
4321         err = cnic_cm_alloc_mem(dev);
4322         if (err)
4323                 return err;
4324
4325         err = cp->start_cm(dev);
4326
4327         if (err)
4328                 goto err_out;
4329
4330         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4331
4332         dev->cm_create = cnic_cm_create;
4333         dev->cm_destroy = cnic_cm_destroy;
4334         dev->cm_connect = cnic_cm_connect;
4335         dev->cm_abort = cnic_cm_abort;
4336         dev->cm_close = cnic_cm_close;
4337         dev->cm_select_dev = cnic_cm_select_dev;
4338
4339         cp->ulp_handle[CNIC_ULP_L4] = dev;
4340         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4341         return 0;
4342
4343 err_out:
4344         cnic_cm_free_mem(dev);
4345         return err;
4346 }
4347
4348 static int cnic_cm_shutdown(struct cnic_dev *dev)
4349 {
4350         struct cnic_local *cp = dev->cnic_priv;
4351         int i;
4352
4353         if (!cp->csk_tbl)
4354                 return 0;
4355
4356         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4357                 struct cnic_sock *csk = &cp->csk_tbl[i];
4358
4359                 clear_bit(SK_F_INUSE, &csk->flags);
4360                 cnic_cm_cleanup(csk);
4361         }
4362         cnic_cm_free_mem(dev);
4363
4364         return 0;
4365 }
4366
4367 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4368 {
4369         u32 cid_addr;
4370         int i;
4371
4372         cid_addr = GET_CID_ADDR(cid);
4373
4374         for (i = 0; i < CTX_SIZE; i += 4)
4375                 cnic_ctx_wr(dev, cid_addr, i, 0);
4376 }
4377
4378 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4379 {
4380         struct cnic_local *cp = dev->cnic_priv;
4381         int ret = 0, i;
4382         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4383
4384         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4385                 return 0;
4386
4387         for (i = 0; i < cp->ctx_blks; i++) {
4388                 int j;
4389                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4390                 u32 val;
4391
4392                 memset(cp->ctx_arr[i].ctx, 0, CNIC_PAGE_SIZE);
4393
4394                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4395                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4396                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4397                         (u64) cp->ctx_arr[i].mapping >> 32);
4398                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4399                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4400                 for (j = 0; j < 10; j++) {
4401
4402                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4403                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4404                                 break;
4405                         udelay(5);
4406                 }
4407                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4408                         ret = -EBUSY;
4409                         break;
4410                 }
4411         }
4412         return ret;
4413 }
4414
4415 static void cnic_free_irq(struct cnic_dev *dev)
4416 {
4417         struct cnic_local *cp = dev->cnic_priv;
4418         struct cnic_eth_dev *ethdev = cp->ethdev;
4419
4420         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4421                 cp->disable_int_sync(dev);
4422                 tasklet_kill(&cp->cnic_irq_task);
4423                 free_irq(ethdev->irq_arr[0].vector, dev);
4424         }
4425 }
4426
4427 static int cnic_request_irq(struct cnic_dev *dev)
4428 {
4429         struct cnic_local *cp = dev->cnic_priv;
4430         struct cnic_eth_dev *ethdev = cp->ethdev;
4431         int err;
4432
4433         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4434         if (err)
4435                 tasklet_disable(&cp->cnic_irq_task);
4436
4437         return err;
4438 }
4439
4440 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4441 {
4442         struct cnic_local *cp = dev->cnic_priv;
4443         struct cnic_eth_dev *ethdev = cp->ethdev;
4444
4445         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4446                 int err, i = 0;
4447                 int sblk_num = cp->status_blk_num;
4448                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4449                            BNX2_HC_SB_CONFIG_1;
4450
4451                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4452
4453                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4454                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4455                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4456
4457                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4458                 tasklet_setup(&cp->cnic_irq_task, cnic_service_bnx2_msix);
4459                 err = cnic_request_irq(dev);
4460                 if (err)
4461                         return err;
4462
4463                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4464                        i < 10) {
4465                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4466                                 1 << (11 + sblk_num));
4467                         udelay(10);
4468                         i++;
4469                         barrier();
4470                 }
4471                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4472                         cnic_free_irq(dev);
4473                         goto failed;
4474                 }
4475
4476         } else {
4477                 struct status_block *sblk = cp->status_blk.gen;
4478                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4479                 int i = 0;
4480
4481                 while (sblk->status_completion_producer_index && i < 10) {
4482                         CNIC_WR(dev, BNX2_HC_COMMAND,
4483                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4484                         udelay(10);
4485                         i++;
4486                         barrier();
4487                 }
4488                 if (sblk->status_completion_producer_index)
4489                         goto failed;
4490
4491         }
4492         return 0;
4493
4494 failed:
4495         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4496         return -EBUSY;
4497 }
4498
4499 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4500 {
4501         struct cnic_local *cp = dev->cnic_priv;
4502         struct cnic_eth_dev *ethdev = cp->ethdev;
4503
4504         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4505                 return;
4506
4507         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4508                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4509 }
4510
4511 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4512 {
4513         struct cnic_local *cp = dev->cnic_priv;
4514         struct cnic_eth_dev *ethdev = cp->ethdev;
4515
4516         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4517                 return;
4518
4519         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4520                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4521         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4522         synchronize_irq(ethdev->irq_arr[0].vector);
4523 }
4524
4525 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4526 {
4527         struct cnic_local *cp = dev->cnic_priv;
4528         struct cnic_eth_dev *ethdev = cp->ethdev;
4529         struct cnic_uio_dev *udev = cp->udev;
4530         u32 cid_addr, tx_cid, sb_id;
4531         u32 val, offset0, offset1, offset2, offset3;
4532         int i;
4533         struct bnx2_tx_bd *txbd;
4534         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4535         struct status_block *s_blk = cp->status_blk.gen;
4536
4537         sb_id = cp->status_blk_num;
4538         tx_cid = 20;
4539         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4540         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4541                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4542
4543                 tx_cid = TX_TSS_CID + sb_id - 1;
4544                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4545                         (TX_TSS_CID << 7));
4546                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4547         }
4548         cp->tx_cons = *cp->tx_cons_ptr;
4549
4550         cid_addr = GET_CID_ADDR(tx_cid);
4551         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
4552                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4553
4554                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4555                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4556
4557                 offset0 = BNX2_L2CTX_TYPE_XI;
4558                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4559                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4560                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4561         } else {
4562                 cnic_init_context(dev, tx_cid);
4563                 cnic_init_context(dev, tx_cid + 1);
4564
4565                 offset0 = BNX2_L2CTX_TYPE;
4566                 offset1 = BNX2_L2CTX_CMD_TYPE;
4567                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4568                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4569         }
4570         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4571         cnic_ctx_wr(dev, cid_addr, offset0, val);
4572
4573         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4574         cnic_ctx_wr(dev, cid_addr, offset1, val);
4575
4576         txbd = udev->l2_ring;
4577
4578         buf_map = udev->l2_buf_map;
4579         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i++, txbd++) {
4580                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4581                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4582         }
4583         val = (u64) ring_map >> 32;
4584         cnic_ctx_wr(dev, cid_addr, offset2, val);
4585         txbd->tx_bd_haddr_hi = val;
4586
4587         val = (u64) ring_map & 0xffffffff;
4588         cnic_ctx_wr(dev, cid_addr, offset3, val);
4589         txbd->tx_bd_haddr_lo = val;
4590 }
4591
4592 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4593 {
4594         struct cnic_local *cp = dev->cnic_priv;
4595         struct cnic_eth_dev *ethdev = cp->ethdev;
4596         struct cnic_uio_dev *udev = cp->udev;
4597         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4598         int i;
4599         struct bnx2_rx_bd *rxbd;
4600         struct status_block *s_blk = cp->status_blk.gen;
4601         dma_addr_t ring_map = udev->l2_ring_map;
4602
4603         sb_id = cp->status_blk_num;
4604         cnic_init_context(dev, 2);
4605         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4606         coal_reg = BNX2_HC_COMMAND;
4607         coal_val = CNIC_RD(dev, coal_reg);
4608         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4609                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4610
4611                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4612                 coal_reg = BNX2_HC_COALESCE_NOW;
4613                 coal_val = 1 << (11 + sb_id);
4614         }
4615         i = 0;
4616         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4617                 CNIC_WR(dev, coal_reg, coal_val);
4618                 udelay(10);
4619                 i++;
4620                 barrier();
4621         }
4622         cp->rx_cons = *cp->rx_cons_ptr;
4623
4624         cid_addr = GET_CID_ADDR(2);
4625         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4626               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4627         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4628
4629         if (sb_id == 0)
4630                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4631         else
4632                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4633         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4634
4635         rxbd = udev->l2_ring + CNIC_PAGE_SIZE;
4636         for (i = 0; i < BNX2_MAX_RX_DESC_CNT; i++, rxbd++) {
4637                 dma_addr_t buf_map;
4638                 int n = (i % cp->l2_rx_ring_size) + 1;
4639
4640                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4641                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4642                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4643                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4644                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4645         }
4646         val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
4647         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4648         rxbd->rx_bd_haddr_hi = val;
4649
4650         val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
4651         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4652         rxbd->rx_bd_haddr_lo = val;
4653
4654         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4655         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4656 }
4657
4658 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4659 {
4660         struct kwqe *wqes[1], l2kwqe;
4661
4662         memset(&l2kwqe, 0, sizeof(l2kwqe));
4663         wqes[0] = &l2kwqe;
4664         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4665                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4666                                KWQE_OPCODE_SHIFT) | 2;
4667         dev->submit_kwqes(dev, wqes, 1);
4668 }
4669
4670 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4671 {
4672         struct cnic_local *cp = dev->cnic_priv;
4673         u32 val;
4674
4675         val = cp->func << 2;
4676
4677         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4678
4679         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4680                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4681         dev->mac_addr[0] = (u8) (val >> 8);
4682         dev->mac_addr[1] = (u8) val;
4683
4684         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4685
4686         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4687                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4688         dev->mac_addr[2] = (u8) (val >> 24);
4689         dev->mac_addr[3] = (u8) (val >> 16);
4690         dev->mac_addr[4] = (u8) (val >> 8);
4691         dev->mac_addr[5] = (u8) val;
4692
4693         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4694
4695         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4696         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4697                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4698
4699         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4700         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4701         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4702 }
4703
4704 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4705 {
4706         struct cnic_local *cp = dev->cnic_priv;
4707         struct cnic_eth_dev *ethdev = cp->ethdev;
4708         struct status_block *sblk = cp->status_blk.gen;
4709         u32 val, kcq_cid_addr, kwq_cid_addr;
4710         int err;
4711
4712         cnic_set_bnx2_mac(dev);
4713
4714         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4715         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4716         if (CNIC_PAGE_BITS > 12)
4717                 val |= (12 - 8)  << 4;
4718         else
4719                 val |= (CNIC_PAGE_BITS - 8)  << 4;
4720
4721         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4722
4723         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4724         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4725         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4726
4727         err = cnic_setup_5709_context(dev, 1);
4728         if (err)
4729                 return err;
4730
4731         cnic_init_context(dev, KWQ_CID);
4732         cnic_init_context(dev, KCQ_CID);
4733
4734         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4735         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4736
4737         cp->max_kwq_idx = MAX_KWQ_IDX;
4738         cp->kwq_prod_idx = 0;
4739         cp->kwq_con_idx = 0;
4740         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4741
4742         if (BNX2_CHIP(cp) == BNX2_CHIP_5706 || BNX2_CHIP(cp) == BNX2_CHIP_5708)
4743                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4744         else
4745                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4746
4747         /* Initialize the kernel work queue context. */
4748         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4749               (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4750         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4751
4752         val = (CNIC_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4753         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4754
4755         val = ((CNIC_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4756         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4757
4758         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4759         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4760
4761         val = (u32) cp->kwq_info.pgtbl_map;
4762         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4763
4764         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4765         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4766
4767         cp->kcq1.sw_prod_idx = 0;
4768         cp->kcq1.hw_prod_idx_ptr =
4769                 &sblk->status_completion_producer_index;
4770
4771         cp->kcq1.status_idx_ptr = &sblk->status_idx;
4772
4773         /* Initialize the kernel complete queue context. */
4774         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4775               (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4776         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4777
4778         val = (CNIC_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4779         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4780
4781         val = ((CNIC_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4782         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4783
4784         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4785         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4786
4787         val = (u32) cp->kcq1.dma.pgtbl_map;
4788         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4789
4790         cp->int_num = 0;
4791         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4792                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4793                 u32 sb_id = cp->status_blk_num;
4794                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4795
4796                 cp->kcq1.hw_prod_idx_ptr =
4797                         &msblk->status_completion_producer_index;
4798                 cp->kcq1.status_idx_ptr = &msblk->status_idx;
4799                 cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
4800                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4801                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4802                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4803         }
4804
4805         /* Enable Commnad Scheduler notification when we write to the
4806          * host producer index of the kernel contexts. */
4807         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4808
4809         /* Enable Command Scheduler notification when we write to either
4810          * the Send Queue or Receive Queue producer indexes of the kernel
4811          * bypass contexts. */
4812         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4813         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4814
4815         /* Notify COM when the driver post an application buffer. */
4816         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4817
4818         /* Set the CP and COM doorbells.  These two processors polls the
4819          * doorbell for a non zero value before running.  This must be done
4820          * after setting up the kernel queue contexts. */
4821         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4822         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4823
4824         cnic_init_bnx2_tx_ring(dev);
4825         cnic_init_bnx2_rx_ring(dev);
4826
4827         err = cnic_init_bnx2_irq(dev);
4828         if (err) {
4829                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4830                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4831                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4832                 return err;
4833         }
4834
4835         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
4836
4837         return 0;
4838 }
4839
4840 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4841 {
4842         struct cnic_local *cp = dev->cnic_priv;
4843         struct cnic_eth_dev *ethdev = cp->ethdev;
4844         u32 start_offset = ethdev->ctx_tbl_offset;
4845         int i;
4846
4847         for (i = 0; i < cp->ctx_blks; i++) {
4848                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4849                 dma_addr_t map = ctx->mapping;
4850
4851                 if (cp->ctx_align) {
4852                         unsigned long mask = cp->ctx_align - 1;
4853
4854                         map = (map + mask) & ~mask;
4855                 }
4856
4857                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4858         }
4859 }
4860
4861 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4862 {
4863         struct cnic_local *cp = dev->cnic_priv;
4864         struct cnic_eth_dev *ethdev = cp->ethdev;
4865         int err = 0;
4866
4867         tasklet_setup(&cp->cnic_irq_task, cnic_service_bnx2x_bh);
4868         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4869                 err = cnic_request_irq(dev);
4870
4871         return err;
4872 }
4873
4874 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4875                                                 u16 sb_id, u8 sb_index,
4876                                                 u8 disable)
4877 {
4878         struct bnx2x *bp = netdev_priv(dev->netdev);
4879
4880         u32 addr = BAR_CSTRORM_INTMEM +
4881                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4882                         offsetof(struct hc_status_block_data_e1x, index_data) +
4883                         sizeof(struct hc_index_data)*sb_index +
4884                         offsetof(struct hc_index_data, flags);
4885         u16 flags = CNIC_RD16(dev, addr);
4886         /* clear and set */
4887         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4888         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4889                   HC_INDEX_DATA_HC_ENABLED);
4890         CNIC_WR16(dev, addr, flags);
4891 }
4892
4893 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4894 {
4895         struct cnic_local *cp = dev->cnic_priv;
4896         struct bnx2x *bp = netdev_priv(dev->netdev);
4897         u8 sb_id = cp->status_blk_num;
4898
4899         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4900                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4901                         offsetof(struct hc_status_block_data_e1x, index_data) +
4902                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4903                         offsetof(struct hc_index_data, timeout), 64 / 4);
4904         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4905 }
4906
4907 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4908 {
4909 }
4910
4911 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4912                                     struct client_init_ramrod_data *data)
4913 {
4914         struct cnic_local *cp = dev->cnic_priv;
4915         struct bnx2x *bp = netdev_priv(dev->netdev);
4916         struct cnic_uio_dev *udev = cp->udev;
4917         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4918         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4919         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4920         int i;
4921         u32 cli = cp->ethdev->iscsi_l2_client_id;
4922         u32 val;
4923
4924         memset(txbd, 0, CNIC_PAGE_SIZE);
4925
4926         buf_map = udev->l2_buf_map;
4927         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4928                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4929                 struct eth_tx_parse_bd_e1x *pbd_e1x =
4930                         &((txbd + 1)->parse_bd_e1x);
4931                 struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2);
4932                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4933
4934                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4935                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4936                 reg_bd->addr_hi = start_bd->addr_hi;
4937                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4938                 start_bd->nbytes = cpu_to_le16(0x10);
4939                 start_bd->nbd = cpu_to_le16(3);
4940                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4941                 start_bd->general_data &= ~ETH_TX_START_BD_PARSE_NBDS;
4942                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4943
4944                 if (BNX2X_CHIP_IS_E2_PLUS(bp))
4945                         pbd_e2->parsing_data = (UNICAST_ADDRESS <<
4946                                 ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT);
4947                 else
4948                         pbd_e1x->global_data = (UNICAST_ADDRESS <<
4949                                 ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT);
4950         }
4951
4952         val = (u64) ring_map >> 32;
4953         txbd->next_bd.addr_hi = cpu_to_le32(val);
4954
4955         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4956
4957         val = (u64) ring_map & 0xffffffff;
4958         txbd->next_bd.addr_lo = cpu_to_le32(val);
4959
4960         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4961
4962         /* Other ramrod params */
4963         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4964         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4965
4966         /* reset xstorm per client statistics */
4967         if (cli < MAX_STAT_COUNTER_ID) {
4968                 data->general.statistics_zero_flg = 1;
4969                 data->general.statistics_en_flg = 1;
4970                 data->general.statistics_counter_id = cli;
4971         }
4972
4973         cp->tx_cons_ptr =
4974                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4975 }
4976
4977 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4978                                     struct client_init_ramrod_data *data)
4979 {
4980         struct cnic_local *cp = dev->cnic_priv;
4981         struct bnx2x *bp = netdev_priv(dev->netdev);
4982         struct cnic_uio_dev *udev = cp->udev;
4983         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4984                                 CNIC_PAGE_SIZE);
4985         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4986                                 (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
4987         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4988         int i;
4989         u32 cli = cp->ethdev->iscsi_l2_client_id;
4990         int cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
4991         u32 val;
4992         dma_addr_t ring_map = udev->l2_ring_map;
4993
4994         /* General data */
4995         data->general.client_id = cli;
4996         data->general.activate_flg = 1;
4997         data->general.sp_client_id = cli;
4998         data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4999         data->general.func_id = bp->pfid;
5000
5001         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
5002                 dma_addr_t buf_map;
5003                 int n = (i % cp->l2_rx_ring_size) + 1;
5004
5005                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
5006                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
5007                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
5008         }
5009
5010         val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
5011         rxbd->addr_hi = cpu_to_le32(val);
5012         data->rx.bd_page_base.hi = cpu_to_le32(val);
5013
5014         val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
5015         rxbd->addr_lo = cpu_to_le32(val);
5016         data->rx.bd_page_base.lo = cpu_to_le32(val);
5017
5018         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
5019         val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) >> 32;
5020         rxcqe->addr_hi = cpu_to_le32(val);
5021         data->rx.cqe_page_base.hi = cpu_to_le32(val);
5022
5023         val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) & 0xffffffff;
5024         rxcqe->addr_lo = cpu_to_le32(val);
5025         data->rx.cqe_page_base.lo = cpu_to_le32(val);
5026
5027         /* Other ramrod params */
5028         data->rx.client_qzone_id = cl_qzone_id;
5029         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
5030         data->rx.status_block_id = BNX2X_DEF_SB_ID;
5031
5032         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
5033
5034         data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
5035         data->rx.outer_vlan_removal_enable_flg = 1;
5036         data->rx.silent_vlan_removal_flg = 1;
5037         data->rx.silent_vlan_value = 0;
5038         data->rx.silent_vlan_mask = 0xffff;
5039
5040         cp->rx_cons_ptr =
5041                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
5042         cp->rx_cons = *cp->rx_cons_ptr;
5043 }
5044
5045 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
5046 {
5047         struct cnic_local *cp = dev->cnic_priv;
5048         struct bnx2x *bp = netdev_priv(dev->netdev);
5049         u32 pfid = bp->pfid;
5050
5051         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
5052                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
5053         cp->kcq1.sw_prod_idx = 0;
5054
5055         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5056                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5057
5058                 cp->kcq1.hw_prod_idx_ptr =
5059                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5060                 cp->kcq1.status_idx_ptr =
5061                         &sb->sb.running_index[SM_RX_ID];
5062         } else {
5063                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
5064
5065                 cp->kcq1.hw_prod_idx_ptr =
5066                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5067                 cp->kcq1.status_idx_ptr =
5068                         &sb->sb.running_index[SM_RX_ID];
5069         }
5070
5071         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5072                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5073
5074                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
5075                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
5076                 cp->kcq2.sw_prod_idx = 0;
5077                 cp->kcq2.hw_prod_idx_ptr =
5078                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
5079                 cp->kcq2.status_idx_ptr =
5080                         &sb->sb.running_index[SM_RX_ID];
5081         }
5082 }
5083
5084 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
5085 {
5086         struct cnic_local *cp = dev->cnic_priv;
5087         struct bnx2x *bp = netdev_priv(dev->netdev);
5088         struct cnic_eth_dev *ethdev = cp->ethdev;
5089         int ret;
5090         u32 pfid;
5091
5092         dev->stats_addr = ethdev->addr_drv_info_to_mcp;
5093         cp->func = bp->pf_num;
5094
5095         pfid = bp->pfid;
5096
5097         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5098                                cp->iscsi_start_cid, 0);
5099
5100         if (ret)
5101                 return -ENOMEM;
5102
5103         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5104                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5105                                         cp->fcoe_start_cid, 0);
5106
5107                 if (ret)
5108                         return -ENOMEM;
5109         }
5110
5111         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
5112
5113         cnic_init_bnx2x_kcq(dev);
5114
5115         /* Only 1 EQ */
5116         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5117         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5118                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5119         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5120                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5121                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5122         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5123                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5124                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5125         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5126                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5127                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5128         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5129                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5130                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5131         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5132                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5133         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5134                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5135         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5136                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5137                 HC_INDEX_ISCSI_EQ_CONS);
5138
5139         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5140                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5141                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
5142         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5143                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5144                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
5145
5146         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
5147                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
5148
5149         cnic_setup_bnx2x_context(dev);
5150
5151         ret = cnic_init_bnx2x_irq(dev);
5152         if (ret)
5153                 return ret;
5154
5155         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
5156         return 0;
5157 }
5158
5159 static void cnic_init_rings(struct cnic_dev *dev)
5160 {
5161         struct cnic_local *cp = dev->cnic_priv;
5162         struct bnx2x *bp = netdev_priv(dev->netdev);
5163         struct cnic_uio_dev *udev = cp->udev;
5164
5165         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5166                 return;
5167
5168         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5169                 cnic_init_bnx2_tx_ring(dev);
5170                 cnic_init_bnx2_rx_ring(dev);
5171                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5172         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5173                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5174                 u32 cid = cp->ethdev->iscsi_l2_cid;
5175                 u32 cl_qzone_id;
5176                 struct client_init_ramrod_data *data;
5177                 union l5cm_specific_data l5_data;
5178                 struct ustorm_eth_rx_producers rx_prods = {0};
5179                 u32 off, i, *cid_ptr;
5180
5181                 rx_prods.bd_prod = 0;
5182                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
5183                 barrier();
5184
5185                 cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
5186
5187                 off = BAR_USTRORM_INTMEM +
5188                         (BNX2X_CHIP_IS_E2_PLUS(bp) ?
5189                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
5190                          USTORM_RX_PRODS_E1X_OFFSET(BP_PORT(bp), cli));
5191
5192                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5193                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5194
5195                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5196
5197                 data = udev->l2_buf;
5198                 cid_ptr = udev->l2_buf + 12;
5199
5200                 memset(data, 0, sizeof(*data));
5201
5202                 cnic_init_bnx2x_tx_ring(dev, data);
5203                 cnic_init_bnx2x_rx_ring(dev, data);
5204
5205                 data->general.fp_hsi_ver =  ETH_FP_HSI_VERSION;
5206
5207                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5208                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5209
5210                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5211
5212                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5213                         cid, ETH_CONNECTION_TYPE, &l5_data);
5214
5215                 i = 0;
5216                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5217                        ++i < 10)
5218                         msleep(1);
5219
5220                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5221                         netdev_err(dev->netdev,
5222                                 "iSCSI CLIENT_SETUP did not complete\n");
5223                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5224                 cnic_ring_ctl(dev, cid, cli, 1);
5225                 *cid_ptr = cid >> 4;
5226                 *(cid_ptr + 1) = cid * bp->db_size;
5227                 *(cid_ptr + 2) = UIO_USE_TX_DOORBELL;
5228         }
5229 }
5230
5231 static void cnic_shutdown_rings(struct cnic_dev *dev)
5232 {
5233         struct cnic_local *cp = dev->cnic_priv;
5234         struct cnic_uio_dev *udev = cp->udev;
5235         void *rx_ring;
5236
5237         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5238                 return;
5239
5240         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5241                 cnic_shutdown_bnx2_rx_ring(dev);
5242         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5243                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5244                 u32 cid = cp->ethdev->iscsi_l2_cid;
5245                 union l5cm_specific_data l5_data;
5246                 int i;
5247
5248                 cnic_ring_ctl(dev, cid, cli, 0);
5249
5250                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5251
5252                 l5_data.phy_address.lo = cli;
5253                 l5_data.phy_address.hi = 0;
5254                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5255                         cid, ETH_CONNECTION_TYPE, &l5_data);
5256                 i = 0;
5257                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5258                        ++i < 10)
5259                         msleep(1);
5260
5261                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5262                         netdev_err(dev->netdev,
5263                                 "iSCSI CLIENT_HALT did not complete\n");
5264                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5265
5266                 memset(&l5_data, 0, sizeof(l5_data));
5267                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5268                         cid, NONE_CONNECTION_TYPE, &l5_data);
5269                 msleep(10);
5270         }
5271         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5272         rx_ring = udev->l2_ring + CNIC_PAGE_SIZE;
5273         memset(rx_ring, 0, CNIC_PAGE_SIZE);
5274 }
5275
5276 static int cnic_register_netdev(struct cnic_dev *dev)
5277 {
5278         struct cnic_local *cp = dev->cnic_priv;
5279         struct cnic_eth_dev *ethdev = cp->ethdev;
5280         int err;
5281
5282         if (!ethdev)
5283                 return -ENODEV;
5284
5285         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5286                 return 0;
5287
5288         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5289         if (err)
5290                 netdev_err(dev->netdev, "register_cnic failed\n");
5291
5292         /* Read iSCSI config again.  On some bnx2x device, iSCSI config
5293          * can change after firmware is downloaded.
5294          */
5295         dev->max_iscsi_conn = ethdev->max_iscsi_conn;
5296         if (ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
5297                 dev->max_iscsi_conn = 0;
5298
5299         return err;
5300 }
5301
5302 static void cnic_unregister_netdev(struct cnic_dev *dev)
5303 {
5304         struct cnic_local *cp = dev->cnic_priv;
5305         struct cnic_eth_dev *ethdev = cp->ethdev;
5306
5307         if (!ethdev)
5308                 return;
5309
5310         ethdev->drv_unregister_cnic(dev->netdev);
5311 }
5312
5313 static int cnic_start_hw(struct cnic_dev *dev)
5314 {
5315         struct cnic_local *cp = dev->cnic_priv;
5316         struct cnic_eth_dev *ethdev = cp->ethdev;
5317         int err;
5318
5319         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5320                 return -EALREADY;
5321
5322         dev->regview = ethdev->io_base;
5323         pci_dev_get(dev->pcidev);
5324         cp->func = PCI_FUNC(dev->pcidev->devfn);
5325         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5326         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5327
5328         err = cp->alloc_resc(dev);
5329         if (err) {
5330                 netdev_err(dev->netdev, "allocate resource failure\n");
5331                 goto err1;
5332         }
5333
5334         err = cp->start_hw(dev);
5335         if (err)
5336                 goto err1;
5337
5338         err = cnic_cm_open(dev);
5339         if (err)
5340                 goto err1;
5341
5342         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5343
5344         cp->enable_int(dev);
5345
5346         return 0;
5347
5348 err1:
5349         if (ethdev->drv_state & CNIC_DRV_STATE_HANDLES_IRQ)
5350                 cp->stop_hw(dev);
5351         else
5352                 cp->free_resc(dev);
5353         pci_dev_put(dev->pcidev);
5354         return err;
5355 }
5356
5357 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5358 {
5359         cnic_disable_bnx2_int_sync(dev);
5360
5361         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5362         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5363
5364         cnic_init_context(dev, KWQ_CID);
5365         cnic_init_context(dev, KCQ_CID);
5366
5367         cnic_setup_5709_context(dev, 0);
5368         cnic_free_irq(dev);
5369
5370         cnic_free_resc(dev);
5371 }
5372
5373
5374 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5375 {
5376         struct cnic_local *cp = dev->cnic_priv;
5377         struct bnx2x *bp = netdev_priv(dev->netdev);
5378         u32 hc_index = HC_INDEX_ISCSI_EQ_CONS;
5379         u32 sb_id = cp->status_blk_num;
5380         u32 idx_off, syn_off;
5381
5382         cnic_free_irq(dev);
5383
5384         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5385                 idx_off = offsetof(struct hc_status_block_e2, index_values) +
5386                           (hc_index * sizeof(u16));
5387
5388                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E2_OFFSET(hc_index, sb_id);
5389         } else {
5390                 idx_off = offsetof(struct hc_status_block_e1x, index_values) +
5391                           (hc_index * sizeof(u16));
5392
5393                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E1X_OFFSET(hc_index, sb_id);
5394         }
5395         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + syn_off, 0);
5396         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_OFFSET(sb_id) +
5397                   idx_off, 0);
5398
5399         *cp->kcq1.hw_prod_idx_ptr = 0;
5400         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5401                 CSTORM_ISCSI_EQ_CONS_OFFSET(bp->pfid, 0), 0);
5402         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5403         cnic_free_resc(dev);
5404 }
5405
5406 static void cnic_stop_hw(struct cnic_dev *dev)
5407 {
5408         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5409                 struct cnic_local *cp = dev->cnic_priv;
5410                 int i = 0;
5411
5412                 /* Need to wait for the ring shutdown event to complete
5413                  * before clearing the CNIC_UP flag.
5414                  */
5415                 while (cp->udev && cp->udev->uio_dev != -1 && i < 15) {
5416                         msleep(100);
5417                         i++;
5418                 }
5419                 cnic_shutdown_rings(dev);
5420                 cp->stop_cm(dev);
5421                 cp->ethdev->drv_state &= ~CNIC_DRV_STATE_HANDLES_IRQ;
5422                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5423                 RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5424                 synchronize_rcu();
5425                 cnic_cm_shutdown(dev);
5426                 cp->stop_hw(dev);
5427                 pci_dev_put(dev->pcidev);
5428         }
5429 }
5430
5431 static void cnic_free_dev(struct cnic_dev *dev)
5432 {
5433         int i = 0;
5434
5435         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5436                 msleep(100);
5437                 i++;
5438         }
5439         if (atomic_read(&dev->ref_count) != 0)
5440                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5441
5442         netdev_info(dev->netdev, "Removed CNIC device\n");
5443         dev_put(dev->netdev);
5444         kfree(dev);
5445 }
5446
5447 static int cnic_get_fc_npiv_tbl(struct cnic_dev *dev,
5448                                 struct cnic_fc_npiv_tbl *npiv_tbl)
5449 {
5450         struct cnic_local *cp = dev->cnic_priv;
5451         struct bnx2x *bp = netdev_priv(dev->netdev);
5452         int ret;
5453
5454         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
5455                 return -EAGAIN;     /* bnx2x is down */
5456
5457         if (!BNX2X_CHIP_IS_E2_PLUS(bp))
5458                 return -EINVAL;
5459
5460         ret = cp->ethdev->drv_get_fc_npiv_tbl(dev->netdev, npiv_tbl);
5461         return ret;
5462 }
5463
5464 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5465                                        struct pci_dev *pdev)
5466 {
5467         struct cnic_dev *cdev;
5468         struct cnic_local *cp;
5469         int alloc_size;
5470
5471         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5472
5473         cdev = kzalloc(alloc_size, GFP_KERNEL);
5474         if (cdev == NULL)
5475                 return NULL;
5476
5477         cdev->netdev = dev;
5478         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5479         cdev->register_device = cnic_register_device;
5480         cdev->unregister_device = cnic_unregister_device;
5481         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5482         cdev->get_fc_npiv_tbl = cnic_get_fc_npiv_tbl;
5483         atomic_set(&cdev->ref_count, 0);
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_CFI_MASK;   /* make non-zero */
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);