drivers/net/ethernet/broadcom/cnic.c

   1 /* cnic.c: QLogic CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2014 Broadcom Corporation
   4  * Copyright (c) 2014-2015 QLogic Corporation
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation.
   9  *
  10  * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
  11  * Previously modified and maintained by: Michael Chan <mchan@broadcom.com>
  12  * Maintained By: Dept-HSGLinuxNICDev@qlogic.com
  13  */
  14
  15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  16
  17 #include <linux/module.h>
  18
  19 #include <linux/kernel.h>
  20 #include <linux/errno.h>
  21 #include <linux/list.h>
  22 #include <linux/slab.h>
  23 #include <linux/pci.h>
  24 #include <linux/init.h>
  25 #include <linux/netdevice.h>
  26 #include <linux/uio_driver.h>
  27 #include <linux/in.h>
  28 #include <linux/dma-mapping.h>
  29 #include <linux/delay.h>
  30 #include <linux/ethtool.h>
  31 #include <linux/if_vlan.h>
  32 #include <linux/prefetch.h>
  33 #include <linux/random.h>
  34 #if IS_ENABLED(CONFIG_VLAN_8021Q)
  35 #define BCM_VLAN 1
  36 #endif
  37 #include <net/ip.h>
  38 #include <net/tcp.h>
  39 #include <net/route.h>
  40 #include <net/ipv6.h>
  41 #include <net/ip6_route.h>
  42 #include <net/ip6_checksum.h>
  43 #include <scsi/iscsi_if.h>
  44
  45 #define BCM_CNIC        1
  46 #include "cnic_if.h"
  47 #include "bnx2.h"
  48 #include "bnx2x/bnx2x.h"
  49 #include "bnx2x/bnx2x_reg.h"
  50 #include "bnx2x/bnx2x_fw_defs.h"
  51 #include "bnx2x/bnx2x_hsi.h"
  52 #include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
  53 #include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
  54 #include "../../../scsi/bnx2fc/bnx2fc_constants.h"
  55 #include "cnic.h"
  56 #include "cnic_defs.h"
  57
  58 #define CNIC_MODULE_NAME        "cnic"
  59
  60 static char version[] =
  61         "QLogic " CNIC_MODULE_NAME "Driver v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  62
  63 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  64               "Chen (zongxi@broadcom.com");
  65 MODULE_DESCRIPTION("QLogic cnic Driver");
  66 MODULE_LICENSE("GPL");
  67 MODULE_VERSION(CNIC_MODULE_VERSION);
  68
  69 /* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
  70 static LIST_HEAD(cnic_dev_list);
  71 static LIST_HEAD(cnic_udev_list);
  72 static DEFINE_RWLOCK(cnic_dev_lock);
  73 static DEFINE_MUTEX(cnic_lock);
  74
  75 static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  76
  77 /* helper function, assuming cnic_lock is held */
  78 static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
  79 {
  80         return rcu_dereference_protected(cnic_ulp_tbl[type],
  81                                          lockdep_is_held(&cnic_lock));
  82 }
  83
  84 static int cnic_service_bnx2(void *, void *);
  85 static int cnic_service_bnx2x(void *, void *);
  86 static int cnic_ctl(void *, struct cnic_ctl_info *);
  87
  88 static struct cnic_ops cnic_bnx2_ops = {
  89         .cnic_owner     = THIS_MODULE,
  90         .cnic_handler   = cnic_service_bnx2,
  91         .cnic_ctl       = cnic_ctl,
  92 };
  93
  94 static struct cnic_ops cnic_bnx2x_ops = {
  95         .cnic_owner     = THIS_MODULE,
  96         .cnic_handler   = cnic_service_bnx2x,
  97         .cnic_ctl       = cnic_ctl,
  98 };
  99
 100 static struct workqueue_struct *cnic_wq;
 101
 102 static void cnic_shutdown_rings(struct cnic_dev *);
 103 static void cnic_init_rings(struct cnic_dev *);
 104 static int cnic_cm_set_pg(struct cnic_sock *);
 105
 106 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
 107 {
 108         struct cnic_uio_dev *udev = uinfo->priv;
 109         struct cnic_dev *dev;
 110
 111         if (!capable(CAP_NET_ADMIN))
 112                 return -EPERM;
 113
 114         if (udev->uio_dev != -1)
 115                 return -EBUSY;
 116
 117         rtnl_lock();
 118         dev = udev->dev;
 119
 120         if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 121                 rtnl_unlock();
 122                 return -ENODEV;
 123         }
 124
 125         udev->uio_dev = iminor(inode);
 126
 127         cnic_shutdown_rings(dev);
 128         cnic_init_rings(dev);
 129         rtnl_unlock();
 130
 131         return 0;
 132 }
 133
 134 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 135 {
 136         struct cnic_uio_dev *udev = uinfo->priv;
 137
 138         udev->uio_dev = -1;
 139         return 0;
 140 }
 141
 142 static inline void cnic_hold(struct cnic_dev *dev)
 143 {
 144         atomic_inc(&dev->ref_count);
 145 }
 146
 147 static inline void cnic_put(struct cnic_dev *dev)
 148 {
 149         atomic_dec(&dev->ref_count);
 150 }
 151
 152 static inline void csk_hold(struct cnic_sock *csk)
 153 {
 154         atomic_inc(&csk->ref_count);
 155 }
 156
 157 static inline void csk_put(struct cnic_sock *csk)
 158 {
 159         atomic_dec(&csk->ref_count);
 160 }
 161
 162 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 163 {
 164         struct cnic_dev *cdev;
 165
 166         read_lock(&cnic_dev_lock);
 167         list_for_each_entry(cdev, &cnic_dev_list, list) {
 168                 if (netdev == cdev->netdev) {
 169                         cnic_hold(cdev);
 170                         read_unlock(&cnic_dev_lock);
 171                         return cdev;
 172                 }
 173         }
 174         read_unlock(&cnic_dev_lock);
 175         return NULL;
 176 }
 177
 178 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 179 {
 180         atomic_inc(&ulp_ops->ref_count);
 181 }
 182
 183 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 184 {
 185         atomic_dec(&ulp_ops->ref_count);
 186 }
 187
 188 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 189 {
 190         struct cnic_local *cp = dev->cnic_priv;
 191         struct cnic_eth_dev *ethdev = cp->ethdev;
 192         struct drv_ctl_info info;
 193         struct drv_ctl_io *io = &info.data.io;
 194
 195         memset(&info, 0, sizeof(struct drv_ctl_info));
 196         info.cmd = DRV_CTL_CTX_WR_CMD;
 197         io->cid_addr = cid_addr;
 198         io->offset = off;
 199         io->data = val;
 200         ethdev->drv_ctl(dev->netdev, &info);
 201 }
 202
 203 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 204 {
 205         struct cnic_local *cp = dev->cnic_priv;
 206         struct cnic_eth_dev *ethdev = cp->ethdev;
 207         struct drv_ctl_info info;
 208         struct drv_ctl_io *io = &info.data.io;
 209
 210         memset(&info, 0, sizeof(struct drv_ctl_info));
 211         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 212         io->offset = off;
 213         io->dma_addr = addr;
 214         ethdev->drv_ctl(dev->netdev, &info);
 215 }
 216
 217 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 218 {
 219         struct cnic_local *cp = dev->cnic_priv;
 220         struct cnic_eth_dev *ethdev = cp->ethdev;
 221         struct drv_ctl_info info;
 222         struct drv_ctl_l2_ring *ring = &info.data.ring;
 223
 224         memset(&info, 0, sizeof(struct drv_ctl_info));
 225         if (start)
 226                 info.cmd = DRV_CTL_START_L2_CMD;
 227         else
 228                 info.cmd = DRV_CTL_STOP_L2_CMD;
 229
 230         ring->cid = cid;
 231         ring->client_id = cl_id;
 232         ethdev->drv_ctl(dev->netdev, &info);
 233 }
 234
 235 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 236 {
 237         struct cnic_local *cp = dev->cnic_priv;
 238         struct cnic_eth_dev *ethdev = cp->ethdev;
 239         struct drv_ctl_info info;
 240         struct drv_ctl_io *io = &info.data.io;
 241
 242         memset(&info, 0, sizeof(struct drv_ctl_info));
 243         info.cmd = DRV_CTL_IO_WR_CMD;
 244         io->offset = off;
 245         io->data = val;
 246         ethdev->drv_ctl(dev->netdev, &info);
 247 }
 248
 249 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 250 {
 251         struct cnic_local *cp = dev->cnic_priv;
 252         struct cnic_eth_dev *ethdev = cp->ethdev;
 253         struct drv_ctl_info info;
 254         struct drv_ctl_io *io = &info.data.io;
 255
 256         memset(&info, 0, sizeof(struct drv_ctl_info));
 257         info.cmd = DRV_CTL_IO_RD_CMD;
 258         io->offset = off;
 259         ethdev->drv_ctl(dev->netdev, &info);
 260         return io->data;
 261 }
 262
 263 static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg, int state)
 264 {
 265         struct cnic_local *cp = dev->cnic_priv;
 266         struct cnic_eth_dev *ethdev = cp->ethdev;
 267         struct drv_ctl_info info;
 268         struct fcoe_capabilities *fcoe_cap =
 269                 &info.data.register_data.fcoe_features;
 270
 271         memset(&info, 0, sizeof(struct drv_ctl_info));
 272         if (reg) {
 273                 info.cmd = DRV_CTL_ULP_REGISTER_CMD;
 274                 if (ulp_type == CNIC_ULP_FCOE && dev->fcoe_cap)
 275                         memcpy(fcoe_cap, dev->fcoe_cap, sizeof(*fcoe_cap));
 276         } else {
 277                 info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;
 278         }
 279
 280         info.data.ulp_type = ulp_type;
 281         info.drv_state = state;
 282         ethdev->drv_ctl(dev->netdev, &info);
 283 }
 284
 285 static int cnic_in_use(struct cnic_sock *csk)
 286 {
 287         return test_bit(SK_F_INUSE, &csk->flags);
 288 }
 289
 290 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
 291 {
 292         struct cnic_local *cp = dev->cnic_priv;
 293         struct cnic_eth_dev *ethdev = cp->ethdev;
 294         struct drv_ctl_info info;
 295
 296         memset(&info, 0, sizeof(struct drv_ctl_info));
 297         info.cmd = cmd;
 298         info.data.credit.credit_count = count;
 299         ethdev->drv_ctl(dev->netdev, &info);
 300 }
 301
 302 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 303 {
 304         u32 i;
 305
 306         if (!cp->ctx_tbl)
 307                 return -EINVAL;
 308
 309         for (i = 0; i < cp->max_cid_space; i++) {
 310                 if (cp->ctx_tbl[i].cid == cid) {
 311                         *l5_cid = i;
 312                         return 0;
 313                 }
 314         }
 315         return -EINVAL;
 316 }
 317
 318 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 319                            struct cnic_sock *csk)
 320 {
 321         struct iscsi_path path_req;
 322         char *buf = NULL;
 323         u16 len = 0;
 324         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 325         struct cnic_ulp_ops *ulp_ops;
 326         struct cnic_uio_dev *udev = cp->udev;
 327         int rc = 0, retry = 0;
 328
 329         if (!udev || udev->uio_dev == -1)
 330                 return -ENODEV;
 331
 332         if (csk) {
 333                 len = sizeof(path_req);
 334                 buf = (char *) &path_req;
 335                 memset(&path_req, 0, len);
 336
 337                 msg_type = ISCSI_KEVENT_PATH_REQ;
 338                 path_req.handle = (u64) csk->l5_cid;
 339                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 340                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 341                                sizeof(struct in6_addr));
 342                         path_req.ip_addr_len = 16;
 343                 } else {
 344                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 345                                sizeof(struct in_addr));
 346                         path_req.ip_addr_len = 4;
 347                 }
 348                 path_req.vlan_id = csk->vlan_id;
 349                 path_req.pmtu = csk->mtu;
 350         }
 351
 352         while (retry < 3) {
 353                 rc = 0;
 354                 rcu_read_lock();
 355                 ulp_ops = rcu_dereference(cp->ulp_ops[CNIC_ULP_ISCSI]);
 356                 if (ulp_ops)
 357                         rc = ulp_ops->iscsi_nl_send_msg(
 358                                 cp->ulp_handle[CNIC_ULP_ISCSI],
 359                                 msg_type, buf, len);
 360                 rcu_read_unlock();
 361                 if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
 362                         break;
 363
 364                 msleep(100);
 365                 retry++;
 366         }
 367         return rc;
 368 }
 369
 370 static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
 371
 372 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 373                                   char *buf, u16 len)
 374 {
 375         int rc = -EINVAL;
 376
 377         switch (msg_type) {
 378         case ISCSI_UEVENT_PATH_UPDATE: {
 379                 struct cnic_local *cp;
 380                 u32 l5_cid;
 381                 struct cnic_sock *csk;
 382                 struct iscsi_path *path_resp;
 383
 384                 if (len < sizeof(*path_resp))
 385                         break;
 386
 387                 path_resp = (struct iscsi_path *) buf;
 388                 cp = dev->cnic_priv;
 389                 l5_cid = (u32) path_resp->handle;
 390                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 391                         break;
 392
 393                 if (!rcu_access_pointer(cp->ulp_ops[CNIC_ULP_L4])) {
 394                         rc = -ENODEV;
 395                         break;
 396                 }
 397                 csk = &cp->csk_tbl[l5_cid];
 398                 csk_hold(csk);
 399                 if (cnic_in_use(csk) &&
 400                     test_bit(SK_F_CONNECT_START, &csk->flags)) {
 401
 402                         csk->vlan_id = path_resp->vlan_id;
 403
 404                         memcpy(csk->ha, path_resp->mac_addr, ETH_ALEN);
 405                         if (test_bit(SK_F_IPV6, &csk->flags))
 406                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 407                                        sizeof(struct in6_addr));
 408                         else
 409                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 410                                        sizeof(struct in_addr));
 411
 412                         if (is_valid_ether_addr(csk->ha)) {
 413                                 cnic_cm_set_pg(csk);
 414                         } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
 415                                 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 416
 417                                 cnic_cm_upcall(cp, csk,
 418                                         L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
 419                                 clear_bit(SK_F_CONNECT_START, &csk->flags);
 420                         }
 421                 }
 422                 csk_put(csk);
 423                 rc = 0;
 424         }
 425         }
 426
 427         return rc;
 428 }
 429
 430 static int cnic_offld_prep(struct cnic_sock *csk)
 431 {
 432         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 433                 return 0;
 434
 435         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 436                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 437                 return 0;
 438         }
 439
 440         return 1;
 441 }
 442
 443 static int cnic_close_prep(struct cnic_sock *csk)
 444 {
 445         clear_bit(SK_F_CONNECT_START, &csk->flags);
 446         smp_mb__after_atomic();
 447
 448         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 449                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 450                         msleep(1);
 451
 452                 return 1;
 453         }
 454         return 0;
 455 }
 456
 457 static int cnic_abort_prep(struct cnic_sock *csk)
 458 {
 459         clear_bit(SK_F_CONNECT_START, &csk->flags);
 460         smp_mb__after_atomic();
 461
 462         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 463                 msleep(1);
 464
 465         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 466                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 467                 return 1;
 468         }
 469
 470         return 0;
 471 }
 472
 473 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 474 {
 475         struct cnic_dev *dev;
 476
 477         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 478                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 479                 return -EINVAL;
 480         }
 481         mutex_lock(&cnic_lock);
 482         if (cnic_ulp_tbl_prot(ulp_type)) {
 483                 pr_err("%s: Type %d has already been registered\n",
 484                        __func__, ulp_type);
 485                 mutex_unlock(&cnic_lock);
 486                 return -EBUSY;
 487         }
 488
 489         read_lock(&cnic_dev_lock);
 490         list_for_each_entry(dev, &cnic_dev_list, list) {
 491                 struct cnic_local *cp = dev->cnic_priv;
 492
 493                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 494         }
 495         read_unlock(&cnic_dev_lock);
 496
 497         atomic_set(&ulp_ops->ref_count, 0);
 498         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 499         mutex_unlock(&cnic_lock);
 500
 501         /* Prevent race conditions with netdev_event */
 502         rtnl_lock();
 503         list_for_each_entry(dev, &cnic_dev_list, list) {
 504                 struct cnic_local *cp = dev->cnic_priv;
 505
 506                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 507                         ulp_ops->cnic_init(dev);
 508         }
 509         rtnl_unlock();
 510
 511         return 0;
 512 }
 513
 514 int cnic_unregister_driver(int ulp_type)
 515 {
 516         struct cnic_dev *dev;
 517         struct cnic_ulp_ops *ulp_ops;
 518         int i = 0;
 519
 520         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 521                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 522                 return -EINVAL;
 523         }
 524         mutex_lock(&cnic_lock);
 525         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 526         if (!ulp_ops) {
 527                 pr_err("%s: Type %d has not been registered\n",
 528                        __func__, ulp_type);
 529                 goto out_unlock;
 530         }
 531         read_lock(&cnic_dev_lock);
 532         list_for_each_entry(dev, &cnic_dev_list, list) {
 533                 struct cnic_local *cp = dev->cnic_priv;
 534
 535                 if (rcu_access_pointer(cp->ulp_ops[ulp_type])) {
 536                         pr_err("%s: Type %d still has devices registered\n",
 537                                __func__, ulp_type);
 538                         read_unlock(&cnic_dev_lock);
 539                         goto out_unlock;
 540                 }
 541         }
 542         read_unlock(&cnic_dev_lock);
 543
 544         RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);
 545
 546         mutex_unlock(&cnic_lock);
 547         synchronize_rcu();
 548         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 549                 msleep(100);
 550                 i++;
 551         }
 552
 553         if (atomic_read(&ulp_ops->ref_count) != 0)
 554                 pr_warn("%s: Failed waiting for ref count to go to zero\n",
 555                         __func__);
 556         return 0;
 557
 558 out_unlock:
 559         mutex_unlock(&cnic_lock);
 560         return -EINVAL;
 561 }
 562
 563 static int cnic_start_hw(struct cnic_dev *);
 564 static void cnic_stop_hw(struct cnic_dev *);
 565
 566 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 567                                 void *ulp_ctx)
 568 {
 569         struct cnic_local *cp = dev->cnic_priv;
 570         struct cnic_ulp_ops *ulp_ops;
 571
 572         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 573                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 574                 return -EINVAL;
 575         }
 576         mutex_lock(&cnic_lock);
 577         if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
 578                 pr_err("%s: Driver with type %d has not been registered\n",
 579                        __func__, ulp_type);
 580                 mutex_unlock(&cnic_lock);
 581                 return -EAGAIN;
 582         }
 583         if (rcu_access_pointer(cp->ulp_ops[ulp_type])) {
 584                 pr_err("%s: Type %d has already been registered to this device\n",
 585                        __func__, ulp_type);
 586                 mutex_unlock(&cnic_lock);
 587                 return -EBUSY;
 588         }
 589
 590         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 591         cp->ulp_handle[ulp_type] = ulp_ctx;
 592         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 593         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 594         cnic_hold(dev);
 595
 596         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 597                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 598                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 599
 600         mutex_unlock(&cnic_lock);
 601
 602         cnic_ulp_ctl(dev, ulp_type, true, DRV_ACTIVE);
 603
 604         return 0;
 605
 606 }
 607 EXPORT_SYMBOL(cnic_register_driver);
 608
 609 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 610 {
 611         struct cnic_local *cp = dev->cnic_priv;
 612         int i = 0;
 613
 614         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 615                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 616                 return -EINVAL;
 617         }
 618
 619         if (ulp_type == CNIC_ULP_ISCSI)
 620                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 621
 622         mutex_lock(&cnic_lock);
 623         if (rcu_access_pointer(cp->ulp_ops[ulp_type])) {
 624                 RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
 625                 cnic_put(dev);
 626         } else {
 627                 pr_err("%s: device not registered to this ulp type %d\n",
 628                        __func__, ulp_type);
 629                 mutex_unlock(&cnic_lock);
 630                 return -EINVAL;
 631         }
 632         mutex_unlock(&cnic_lock);
 633
 634         if (ulp_type == CNIC_ULP_FCOE)
 635                 dev->fcoe_cap = NULL;
 636
 637         synchronize_rcu();
 638
 639         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 640                i < 20) {
 641                 msleep(100);
 642                 i++;
 643         }
 644         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 645                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 646
 647         if (test_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 648                 cnic_ulp_ctl(dev, ulp_type, false, DRV_UNLOADED);
 649         else
 650                 cnic_ulp_ctl(dev, ulp_type, false, DRV_INACTIVE);
 651
 652         return 0;
 653 }
 654 EXPORT_SYMBOL(cnic_unregister_driver);
 655
 656 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
 657                             u32 next)
 658 {
 659         id_tbl->start = start_id;
 660         id_tbl->max = size;
 661         id_tbl->next = next;
 662         spin_lock_init(&id_tbl->lock);
 663         id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
 664         if (!id_tbl->table)
 665                 return -ENOMEM;
 666
 667         return 0;
 668 }
 669
 670 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 671 {
 672         kfree(id_tbl->table);
 673         id_tbl->table = NULL;
 674 }
 675
 676 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 677 {
 678         int ret = -1;
 679
 680         id -= id_tbl->start;
 681         if (id >= id_tbl->max)
 682                 return ret;
 683
 684         spin_lock(&id_tbl->lock);
 685         if (!test_bit(id, id_tbl->table)) {
 686                 set_bit(id, id_tbl->table);
 687                 ret = 0;
 688         }
 689         spin_unlock(&id_tbl->lock);
 690         return ret;
 691 }
 692
 693 /* Returns -1 if not successful */
 694 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 695 {
 696         u32 id;
 697
 698         spin_lock(&id_tbl->lock);
 699         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 700         if (id >= id_tbl->max) {
 701                 id = -1;
 702                 if (id_tbl->next != 0) {
 703                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 704                         if (id >= id_tbl->next)
 705                                 id = -1;
 706                 }
 707         }
 708
 709         if (id < id_tbl->max) {
 710                 set_bit(id, id_tbl->table);
 711                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 712                 id += id_tbl->start;
 713         }
 714
 715         spin_unlock(&id_tbl->lock);
 716
 717         return id;
 718 }
 719
 720 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 721 {
 722         if (id == -1)
 723                 return;
 724
 725         id -= id_tbl->start;
 726         if (id >= id_tbl->max)
 727                 return;
 728
 729         clear_bit(id, id_tbl->table);
 730 }
 731
 732 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 733 {
 734         int i;
 735
 736         if (!dma->pg_arr)
 737                 return;
 738
 739         for (i = 0; i < dma->num_pages; i++) {
 740                 if (dma->pg_arr[i]) {
 741                         dma_free_coherent(&dev->pcidev->dev, CNIC_PAGE_SIZE,
 742                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 743                         dma->pg_arr[i] = NULL;
 744                 }
 745         }
 746         if (dma->pgtbl) {
 747                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 748                                   dma->pgtbl, dma->pgtbl_map);
 749                 dma->pgtbl = NULL;
 750         }
 751         kfree(dma->pg_arr);
 752         dma->pg_arr = NULL;
 753         dma->num_pages = 0;
 754 }
 755
 756 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 757 {
 758         int i;
 759         __le32 *page_table = (__le32 *) dma->pgtbl;
 760
 761         for (i = 0; i < dma->num_pages; i++) {
 762                 /* Each entry needs to be in big endian format. */
 763                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 764                 page_table++;
 765                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 766                 page_table++;
 767         }
 768 }
 769
 770 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 771 {
 772         int i;
 773         __le32 *page_table = (__le32 *) dma->pgtbl;
 774
 775         for (i = 0; i < dma->num_pages; i++) {
 776                 /* Each entry needs to be in little endian format. */
 777                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 778                 page_table++;
 779                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 780                 page_table++;
 781         }
 782 }
 783
 784 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 785                           int pages, int use_pg_tbl)
 786 {
 787         int i, size;
 788         struct cnic_local *cp = dev->cnic_priv;
 789
 790         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 791         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 792         if (dma->pg_arr == NULL)
 793                 return -ENOMEM;
 794
 795         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 796         dma->num_pages = pages;
 797
 798         for (i = 0; i < pages; i++) {
 799                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 800                                                     CNIC_PAGE_SIZE,
 801                                                     &dma->pg_map_arr[i],
 802                                                     GFP_ATOMIC);
 803                 if (dma->pg_arr[i] == NULL)
 804                         goto error;
 805         }
 806         if (!use_pg_tbl)
 807                 return 0;
 808
 809         dma->pgtbl_size = ((pages * 8) + CNIC_PAGE_SIZE - 1) &
 810                           ~(CNIC_PAGE_SIZE - 1);
 811         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 812                                         &dma->pgtbl_map, GFP_ATOMIC);
 813         if (dma->pgtbl == NULL)
 814                 goto error;
 815
 816         cp->setup_pgtbl(dev, dma);
 817
 818         return 0;
 819
 820 error:
 821         cnic_free_dma(dev, dma);
 822         return -ENOMEM;
 823 }
 824
 825 static void cnic_free_context(struct cnic_dev *dev)
 826 {
 827         struct cnic_local *cp = dev->cnic_priv;
 828         int i;
 829
 830         for (i = 0; i < cp->ctx_blks; i++) {
 831                 if (cp->ctx_arr[i].ctx) {
 832                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 833                                           cp->ctx_arr[i].ctx,
 834                                           cp->ctx_arr[i].mapping);
 835                         cp->ctx_arr[i].ctx = NULL;
 836                 }
 837         }
 838 }
 839
 840 static void __cnic_free_uio_rings(struct cnic_uio_dev *udev)
 841 {
 842         if (udev->l2_buf) {
 843                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 844                                   udev->l2_buf, udev->l2_buf_map);
 845                 udev->l2_buf = NULL;
 846         }
 847
 848         if (udev->l2_ring) {
 849                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 850                                   udev->l2_ring, udev->l2_ring_map);
 851                 udev->l2_ring = NULL;
 852         }
 853
 854 }
 855
 856 static void __cnic_free_uio(struct cnic_uio_dev *udev)
 857 {
 858         uio_unregister_device(&udev->cnic_uinfo);
 859
 860         __cnic_free_uio_rings(udev);
 861
 862         pci_dev_put(udev->pdev);
 863         kfree(udev);
 864 }
 865
 866 static void cnic_free_uio(struct cnic_uio_dev *udev)
 867 {
 868         if (!udev)
 869                 return;
 870
 871         write_lock(&cnic_dev_lock);
 872         list_del_init(&udev->list);
 873         write_unlock(&cnic_dev_lock);
 874         __cnic_free_uio(udev);
 875 }
 876
 877 static void cnic_free_resc(struct cnic_dev *dev)
 878 {
 879         struct cnic_local *cp = dev->cnic_priv;
 880         struct cnic_uio_dev *udev = cp->udev;
 881
 882         if (udev) {
 883                 udev->dev = NULL;
 884                 cp->udev = NULL;
 885                 if (udev->uio_dev == -1)
 886                         __cnic_free_uio_rings(udev);
 887         }
 888
 889         cnic_free_context(dev);
 890         kfree(cp->ctx_arr);
 891         cp->ctx_arr = NULL;
 892         cp->ctx_blks = 0;
 893
 894         cnic_free_dma(dev, &cp->gbl_buf_info);
 895         cnic_free_dma(dev, &cp->kwq_info);
 896         cnic_free_dma(dev, &cp->kwq_16_data_info);
 897         cnic_free_dma(dev, &cp->kcq2.dma);
 898         cnic_free_dma(dev, &cp->kcq1.dma);
 899         kfree(cp->iscsi_tbl);
 900         cp->iscsi_tbl = NULL;
 901         kfree(cp->ctx_tbl);
 902         cp->ctx_tbl = NULL;
 903
 904         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
 905         cnic_free_id_tbl(&cp->cid_tbl);
 906 }
 907
 908 static int cnic_alloc_context(struct cnic_dev *dev)
 909 {
 910         struct cnic_local *cp = dev->cnic_priv;
 911
 912         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
 913                 int i, k, arr_size;
 914
 915                 cp->ctx_blk_size = CNIC_PAGE_SIZE;
 916                 cp->cids_per_blk = CNIC_PAGE_SIZE / 128;
 917                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 918                            sizeof(struct cnic_ctx);
 919                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 920                 if (cp->ctx_arr == NULL)
 921                         return -ENOMEM;
 922
 923                 k = 0;
 924                 for (i = 0; i < 2; i++) {
 925                         u32 j, reg, off, lo, hi;
 926
 927                         if (i == 0)
 928                                 off = BNX2_PG_CTX_MAP;
 929                         else
 930                                 off = BNX2_ISCSI_CTX_MAP;
 931
 932                         reg = cnic_reg_rd_ind(dev, off);
 933                         lo = reg >> 16;
 934                         hi = reg & 0xffff;
 935                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 936                                 cp->ctx_arr[k].cid = j;
 937                 }
 938
 939                 cp->ctx_blks = k;
 940                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 941                         cp->ctx_blks = 0;
 942                         return -ENOMEM;
 943                 }
 944
 945                 for (i = 0; i < cp->ctx_blks; i++) {
 946                         cp->ctx_arr[i].ctx =
 947                                 dma_alloc_coherent(&dev->pcidev->dev,
 948                                                    CNIC_PAGE_SIZE,
 949                                                    &cp->ctx_arr[i].mapping,
 950                                                    GFP_KERNEL);
 951                         if (cp->ctx_arr[i].ctx == NULL)
 952                                 return -ENOMEM;
 953                 }
 954         }
 955         return 0;
 956 }
 957
 958 static u16 cnic_bnx2_next_idx(u16 idx)
 959 {
 960         return idx + 1;
 961 }
 962
 963 static u16 cnic_bnx2_hw_idx(u16 idx)
 964 {
 965         return idx;
 966 }
 967
 968 static u16 cnic_bnx2x_next_idx(u16 idx)
 969 {
 970         idx++;
 971         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 972                 idx++;
 973
 974         return idx;
 975 }
 976
 977 static u16 cnic_bnx2x_hw_idx(u16 idx)
 978 {
 979         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 980                 idx++;
 981         return idx;
 982 }
 983
 984 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
 985                           bool use_pg_tbl)
 986 {
 987         int err, i, use_page_tbl = 0;
 988         struct kcqe **kcq;
 989
 990         if (use_pg_tbl)
 991                 use_page_tbl = 1;
 992
 993         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
 994         if (err)
 995                 return err;
 996
 997         kcq = (struct kcqe **) info->dma.pg_arr;
 998         info->kcq = kcq;
 999
1000         info->next_idx = cnic_bnx2_next_idx;
1001         info->hw_idx = cnic_bnx2_hw_idx;
1002         if (use_pg_tbl)
1003                 return 0;
1004
1005         info->next_idx = cnic_bnx2x_next_idx;
1006         info->hw_idx = cnic_bnx2x_hw_idx;
1007
1008         for (i = 0; i < KCQ_PAGE_CNT; i++) {
1009                 struct bnx2x_bd_chain_next *next =
1010                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
1011                 int j = i + 1;
1012
1013                 if (j >= KCQ_PAGE_CNT)
1014                         j = 0;
1015                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
1016                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
1017         }
1018         return 0;
1019 }
1020
1021 static int __cnic_alloc_uio_rings(struct cnic_uio_dev *udev, int pages)
1022 {
1023         struct cnic_local *cp = udev->dev->cnic_priv;
1024
1025         if (udev->l2_ring)
1026                 return 0;
1027
1028         udev->l2_ring_size = pages * CNIC_PAGE_SIZE;
1029         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
1030                                            &udev->l2_ring_map,
1031                                            GFP_KERNEL | __GFP_COMP);
1032         if (!udev->l2_ring)
1033                 return -ENOMEM;
1034
1035         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
1036         udev->l2_buf_size = CNIC_PAGE_ALIGN(udev->l2_buf_size);
1037         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1038                                           &udev->l2_buf_map,
1039                                           GFP_KERNEL | __GFP_COMP);
1040         if (!udev->l2_buf) {
1041                 __cnic_free_uio_rings(udev);
1042                 return -ENOMEM;
1043         }
1044
1045         return 0;
1046
1047 }
1048
1049 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
1050 {
1051         struct cnic_local *cp = dev->cnic_priv;
1052         struct cnic_uio_dev *udev;
1053
1054         list_for_each_entry(udev, &cnic_udev_list, list) {
1055                 if (udev->pdev == dev->pcidev) {
1056                         udev->dev = dev;
1057                         if (__cnic_alloc_uio_rings(udev, pages)) {
1058                                 udev->dev = NULL;
1059                                 return -ENOMEM;
1060                         }
1061                         cp->udev = udev;
1062                         return 0;
1063                 }
1064         }
1065
1066         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
1067         if (!udev)
1068                 return -ENOMEM;
1069
1070         udev->uio_dev = -1;
1071
1072         udev->dev = dev;
1073         udev->pdev = dev->pcidev;
1074
1075         if (__cnic_alloc_uio_rings(udev, pages))
1076                 goto err_udev;
1077
1078         list_add(&udev->list, &cnic_udev_list);
1079
1080         pci_dev_get(udev->pdev);
1081
1082         cp->udev = udev;
1083
1084         return 0;
1085
1086  err_udev:
1087         kfree(udev);
1088         return -ENOMEM;
1089 }
1090
1091 static int cnic_init_uio(struct cnic_dev *dev)
1092 {
1093         struct cnic_local *cp = dev->cnic_priv;
1094         struct cnic_uio_dev *udev = cp->udev;
1095         struct uio_info *uinfo;
1096         int ret = 0;
1097
1098         if (!udev)
1099                 return -ENOMEM;
1100
1101         uinfo = &udev->cnic_uinfo;
1102
1103         uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
1104         uinfo->mem[0].internal_addr = dev->regview;
1105         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1106
1107         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1108                 uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
1109                                                      TX_MAX_TSS_RINGS + 1);
1110                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1111                                         CNIC_PAGE_MASK;
1112                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1113                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1114                 else
1115                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1116
1117                 uinfo->name = "bnx2_cnic";
1118         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1119                 uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);
1120
1121                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1122                         CNIC_PAGE_MASK;
1123                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1124
1125                 uinfo->name = "bnx2x_cnic";
1126         }
1127
1128         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1129
1130         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1131         uinfo->mem[2].size = udev->l2_ring_size;
1132         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1133
1134         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1135         uinfo->mem[3].size = udev->l2_buf_size;
1136         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1137
1138         uinfo->version = CNIC_MODULE_VERSION;
1139         uinfo->irq = UIO_IRQ_CUSTOM;
1140
1141         uinfo->open = cnic_uio_open;
1142         uinfo->release = cnic_uio_close;
1143
1144         if (udev->uio_dev == -1) {
1145                 if (!uinfo->priv) {
1146                         uinfo->priv = udev;
1147
1148                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1149                 }
1150         } else {
1151                 cnic_init_rings(dev);
1152         }
1153
1154         return ret;
1155 }
1156
1157 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1158 {
1159         struct cnic_local *cp = dev->cnic_priv;
1160         int ret;
1161
1162         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1163         if (ret)
1164                 goto error;
1165         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1166
1167         ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1168         if (ret)
1169                 goto error;
1170
1171         ret = cnic_alloc_context(dev);
1172         if (ret)
1173                 goto error;
1174
1175         ret = cnic_alloc_uio_rings(dev, 2);
1176         if (ret)
1177                 goto error;
1178
1179         ret = cnic_init_uio(dev);
1180         if (ret)
1181                 goto error;
1182
1183         return 0;
1184
1185 error:
1186         cnic_free_resc(dev);
1187         return ret;
1188 }
1189
1190 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1191 {
1192         struct cnic_local *cp = dev->cnic_priv;
1193         struct bnx2x *bp = netdev_priv(dev->netdev);
1194         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1195         int total_mem, blks, i;
1196
1197         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1198         blks = total_mem / ctx_blk_size;
1199         if (total_mem % ctx_blk_size)
1200                 blks++;
1201
1202         if (blks > cp->ethdev->ctx_tbl_len)
1203                 return -ENOMEM;
1204
1205         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1206         if (cp->ctx_arr == NULL)
1207                 return -ENOMEM;
1208
1209         cp->ctx_blks = blks;
1210         cp->ctx_blk_size = ctx_blk_size;
1211         if (!CHIP_IS_E1(bp))
1212                 cp->ctx_align = 0;
1213         else
1214                 cp->ctx_align = ctx_blk_size;
1215
1216         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1217
1218         for (i = 0; i < blks; i++) {
1219                 cp->ctx_arr[i].ctx =
1220                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1221                                            &cp->ctx_arr[i].mapping,
1222                                            GFP_KERNEL);
1223                 if (cp->ctx_arr[i].ctx == NULL)
1224                         return -ENOMEM;
1225
1226                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1227                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1228                                 cnic_free_context(dev);
1229                                 cp->ctx_blk_size += cp->ctx_align;
1230                                 i = -1;
1231                                 continue;
1232                         }
1233                 }
1234         }
1235         return 0;
1236 }
1237
1238 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1239 {
1240         struct cnic_local *cp = dev->cnic_priv;
1241         struct bnx2x *bp = netdev_priv(dev->netdev);
1242         struct cnic_eth_dev *ethdev = cp->ethdev;
1243         u32 start_cid = ethdev->starting_cid;
1244         int i, j, n, ret, pages;
1245         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1246
1247         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1248         cp->iscsi_start_cid = start_cid;
1249         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1250
1251         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
1252                 cp->max_cid_space += dev->max_fcoe_conn;
1253                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1254                 if (!cp->fcoe_init_cid)
1255                         cp->fcoe_init_cid = 0x10;
1256         }
1257
1258         cp->iscsi_tbl = kcalloc(MAX_ISCSI_TBL_SZ, sizeof(struct cnic_iscsi),
1259                                 GFP_KERNEL);
1260         if (!cp->iscsi_tbl)
1261                 goto error;
1262
1263         cp->ctx_tbl = kcalloc(cp->max_cid_space, sizeof(struct cnic_context),
1264                               GFP_KERNEL);
1265         if (!cp->ctx_tbl)
1266                 goto error;
1267
1268         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1269                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1270                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1271         }
1272
1273         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1274                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1275
1276         pages = CNIC_PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1277                 CNIC_PAGE_SIZE;
1278
1279         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1280         if (ret)
1281                 goto error;
1282
1283         n = CNIC_PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1284         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1285                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1286
1287                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1288                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1289                                                    off;
1290
1291                 if ((i % n) == (n - 1))
1292                         j++;
1293         }
1294
1295         ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1296         if (ret)
1297                 goto error;
1298
1299         if (CNIC_SUPPORTS_FCOE(bp)) {
1300                 ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1301                 if (ret)
1302                         goto error;
1303         }
1304
1305         pages = CNIC_PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / CNIC_PAGE_SIZE;
1306         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1307         if (ret)
1308                 goto error;
1309
1310         ret = cnic_alloc_bnx2x_context(dev);
1311         if (ret)
1312                 goto error;
1313
1314         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
1315                 return 0;
1316
1317         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1318
1319         cp->l2_rx_ring_size = 15;
1320
1321         ret = cnic_alloc_uio_rings(dev, 4);
1322         if (ret)
1323                 goto error;
1324
1325         ret = cnic_init_uio(dev);
1326         if (ret)
1327                 goto error;
1328
1329         return 0;
1330
1331 error:
1332         cnic_free_resc(dev);
1333         return -ENOMEM;
1334 }
1335
1336 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1337 {
1338         return cp->max_kwq_idx -
1339                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1340 }
1341
1342 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1343                                   u32 num_wqes)
1344 {
1345         struct cnic_local *cp = dev->cnic_priv;
1346         struct kwqe *prod_qe;
1347         u16 prod, sw_prod, i;
1348
1349         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1350                 return -EAGAIN;         /* bnx2 is down */
1351
1352         spin_lock_bh(&cp->cnic_ulp_lock);
1353         if (num_wqes > cnic_kwq_avail(cp) &&
1354             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1355                 spin_unlock_bh(&cp->cnic_ulp_lock);
1356                 return -EAGAIN;
1357         }
1358
1359         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1360
1361         prod = cp->kwq_prod_idx;
1362         sw_prod = prod & MAX_KWQ_IDX;
1363         for (i = 0; i < num_wqes; i++) {
1364                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1365                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1366                 prod++;
1367                 sw_prod = prod & MAX_KWQ_IDX;
1368         }
1369         cp->kwq_prod_idx = prod;
1370
1371         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1372
1373         spin_unlock_bh(&cp->cnic_ulp_lock);
1374         return 0;
1375 }
1376
1377 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1378                                    union l5cm_specific_data *l5_data)
1379 {
1380         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1381         dma_addr_t map;
1382
1383         map = ctx->kwqe_data_mapping;
1384         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1385         l5_data->phy_address.hi = (u64) map >> 32;
1386         return ctx->kwqe_data;
1387 }
1388
1389 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1390                                 u32 type, union l5cm_specific_data *l5_data)
1391 {
1392         struct cnic_local *cp = dev->cnic_priv;
1393         struct bnx2x *bp = netdev_priv(dev->netdev);
1394         struct l5cm_spe kwqe;
1395         struct kwqe_16 *kwq[1];
1396         u16 type_16;
1397         int ret;
1398
1399         kwqe.hdr.conn_and_cmd_data =
1400                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1401                              BNX2X_HW_CID(bp, cid)));
1402
1403         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1404         type_16 |= (bp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1405                    SPE_HDR_FUNCTION_ID;
1406
1407         kwqe.hdr.type = cpu_to_le16(type_16);
1408         kwqe.hdr.reserved1 = 0;
1409         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1410         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1411
1412         kwq[0] = (struct kwqe_16 *) &kwqe;
1413
1414         spin_lock_bh(&cp->cnic_ulp_lock);
1415         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1416         spin_unlock_bh(&cp->cnic_ulp_lock);
1417
1418         if (ret == 1)
1419                 return 0;
1420
1421         return ret;
1422 }
1423
1424 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1425                                    struct kcqe *cqes[], u32 num_cqes)
1426 {
1427         struct cnic_local *cp = dev->cnic_priv;
1428         struct cnic_ulp_ops *ulp_ops;
1429
1430         rcu_read_lock();
1431         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1432         if (likely(ulp_ops)) {
1433                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1434                                           cqes, num_cqes);
1435         }
1436         rcu_read_unlock();
1437 }
1438
1439 static void cnic_bnx2x_set_tcp_options(struct cnic_dev *dev, int time_stamps,
1440                                        int en_tcp_dack)
1441 {
1442         struct bnx2x *bp = netdev_priv(dev->netdev);
1443         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1444         u16 tstorm_flags = 0;
1445
1446         if (time_stamps) {
1447                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1448                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1449         }
1450         if (en_tcp_dack)
1451                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_DELAYED_ACK_EN;
1452
1453         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1454                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), xstorm_flags);
1455
1456         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1457                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), tstorm_flags);
1458 }
1459
1460 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1461 {
1462         struct cnic_local *cp = dev->cnic_priv;
1463         struct bnx2x *bp = netdev_priv(dev->netdev);
1464         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1465         int hq_bds, pages;
1466         u32 pfid = bp->pfid;
1467
1468         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1469         cp->num_ccells = req1->num_ccells_per_conn;
1470         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1471                               cp->num_iscsi_tasks;
1472         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1473                         BNX2X_ISCSI_R2TQE_SIZE;
1474         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1475         pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1476         hq_bds = pages * (CNIC_PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1477         cp->num_cqs = req1->num_cqs;
1478
1479         if (!dev->max_iscsi_conn)
1480                 return 0;
1481
1482         /* init Tstorm RAM */
1483         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1484                   req1->rq_num_wqes);
1485         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1486                   CNIC_PAGE_SIZE);
1487         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1488                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1489         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1490                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1491                   req1->num_tasks_per_conn);
1492
1493         /* init Ustorm RAM */
1494         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1495                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1496                   req1->rq_buffer_size);
1497         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1498                   CNIC_PAGE_SIZE);
1499         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1500                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1501         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1502                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1503                   req1->num_tasks_per_conn);
1504         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1505                   req1->rq_num_wqes);
1506         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1507                   req1->cq_num_wqes);
1508         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1509                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1510
1511         /* init Xstorm RAM */
1512         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1513                   CNIC_PAGE_SIZE);
1514         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1515                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1516         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1517                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1518                   req1->num_tasks_per_conn);
1519         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1520                   hq_bds);
1521         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1522                   req1->num_tasks_per_conn);
1523         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1524                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1525
1526         /* init Cstorm RAM */
1527         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1528                   CNIC_PAGE_SIZE);
1529         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1530                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1531         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1532                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1533                   req1->num_tasks_per_conn);
1534         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1535                   req1->cq_num_wqes);
1536         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1537                   hq_bds);
1538
1539         cnic_bnx2x_set_tcp_options(dev,
1540                         req1->flags & ISCSI_KWQE_INIT1_TIME_STAMPS_ENABLE,
1541                         req1->flags & ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE);
1542
1543         return 0;
1544 }
1545
1546 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1547 {
1548         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1549         struct bnx2x *bp = netdev_priv(dev->netdev);
1550         u32 pfid = bp->pfid;
1551         struct iscsi_kcqe kcqe;
1552         struct kcqe *cqes[1];
1553
1554         memset(&kcqe, 0, sizeof(kcqe));
1555         if (!dev->max_iscsi_conn) {
1556                 kcqe.completion_status =
1557                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1558                 goto done;
1559         }
1560
1561         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1562                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1563         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1564                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1565                 req2->error_bit_map[1]);
1566
1567         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1568                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1569         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1570                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1571         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1572                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1573                 req2->error_bit_map[1]);
1574
1575         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1576                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1577
1578         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1579
1580 done:
1581         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1582         cqes[0] = (struct kcqe *) &kcqe;
1583         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1584
1585         return 0;
1586 }
1587
1588 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1589 {
1590         struct cnic_local *cp = dev->cnic_priv;
1591         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1592
1593         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1594                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1595
1596                 cnic_free_dma(dev, &iscsi->hq_info);
1597                 cnic_free_dma(dev, &iscsi->r2tq_info);
1598                 cnic_free_dma(dev, &iscsi->task_array_info);
1599                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1600         } else {
1601                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1602         }
1603
1604         ctx->cid = 0;
1605 }
1606
1607 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1608 {
1609         u32 cid;
1610         int ret, pages;
1611         struct cnic_local *cp = dev->cnic_priv;
1612         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1613         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1614
1615         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1616                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1617                 if (cid == -1) {
1618                         ret = -ENOMEM;
1619                         goto error;
1620                 }
1621                 ctx->cid = cid;
1622                 return 0;
1623         }
1624
1625         cid = cnic_alloc_new_id(&cp->cid_tbl);
1626         if (cid == -1) {
1627                 ret = -ENOMEM;
1628                 goto error;
1629         }
1630
1631         ctx->cid = cid;
1632         pages = CNIC_PAGE_ALIGN(cp->task_array_size) / CNIC_PAGE_SIZE;
1633
1634         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1635         if (ret)
1636                 goto error;
1637
1638         pages = CNIC_PAGE_ALIGN(cp->r2tq_size) / CNIC_PAGE_SIZE;
1639         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1640         if (ret)
1641                 goto error;
1642
1643         pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1644         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1645         if (ret)
1646                 goto error;
1647
1648         return 0;
1649
1650 error:
1651         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1652         return ret;
1653 }
1654
1655 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1656                                 struct regpair *ctx_addr)
1657 {
1658         struct cnic_local *cp = dev->cnic_priv;
1659         struct cnic_eth_dev *ethdev = cp->ethdev;
1660         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1661         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1662         unsigned long align_off = 0;
1663         dma_addr_t ctx_map;
1664         void *ctx;
1665
1666         if (cp->ctx_align) {
1667                 unsigned long mask = cp->ctx_align - 1;
1668
1669                 if (cp->ctx_arr[blk].mapping & mask)
1670                         align_off = cp->ctx_align -
1671                                     (cp->ctx_arr[blk].mapping & mask);
1672         }
1673         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1674                 (off * BNX2X_CONTEXT_MEM_SIZE);
1675         ctx = cp->ctx_arr[blk].ctx + align_off +
1676               (off * BNX2X_CONTEXT_MEM_SIZE);
1677         if (init)
1678                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1679
1680         ctx_addr->lo = ctx_map & 0xffffffff;
1681         ctx_addr->hi = (u64) ctx_map >> 32;
1682         return ctx;
1683 }
1684
1685 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1686                                 u32 num)
1687 {
1688         struct cnic_local *cp = dev->cnic_priv;
1689         struct bnx2x *bp = netdev_priv(dev->netdev);
1690         struct iscsi_kwqe_conn_offload1 *req1 =
1691                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1692         struct iscsi_kwqe_conn_offload2 *req2 =
1693                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1694         struct iscsi_kwqe_conn_offload3 *req3;
1695         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1696         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1697         u32 cid = ctx->cid;
1698         u32 hw_cid = BNX2X_HW_CID(bp, cid);
1699         struct iscsi_context *ictx;
1700         struct regpair context_addr;
1701         int i, j, n = 2, n_max;
1702         u8 port = BP_PORT(bp);
1703
1704         ctx->ctx_flags = 0;
1705         if (!req2->num_additional_wqes)
1706                 return -EINVAL;
1707
1708         n_max = req2->num_additional_wqes + 2;
1709
1710         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1711         if (ictx == NULL)
1712                 return -ENOMEM;
1713
1714         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1715
1716         ictx->xstorm_ag_context.hq_prod = 1;
1717
1718         ictx->xstorm_st_context.iscsi.first_burst_length =
1719                 ISCSI_DEF_FIRST_BURST_LEN;
1720         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1721                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1722         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1723                 req1->sq_page_table_addr_lo;
1724         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1725                 req1->sq_page_table_addr_hi;
1726         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1727         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1728         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1729                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1730         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1731                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1732         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1733                 iscsi->hq_info.pgtbl[0];
1734         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1735                 iscsi->hq_info.pgtbl[1];
1736         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1737                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1738         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1739                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1740         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1741                 iscsi->r2tq_info.pgtbl[0];
1742         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1743                 iscsi->r2tq_info.pgtbl[1];
1744         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1745                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1746         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1747                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1748         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1749                 BNX2X_ISCSI_PBL_NOT_CACHED;
1750         ictx->xstorm_st_context.iscsi.flags.flags |=
1751                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1752         ictx->xstorm_st_context.iscsi.flags.flags |=
1753                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1754         ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1755                 ETH_P_8021Q;
1756         if (BNX2X_CHIP_IS_E2_PLUS(bp) &&
1757             bp->common.chip_port_mode == CHIP_2_PORT_MODE) {
1758
1759                 port = 0;
1760         }
1761         ictx->xstorm_st_context.common.flags =
1762                 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1763         ictx->xstorm_st_context.common.flags =
1764                 port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1765
1766         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1767         /* TSTORM requires the base address of RQ DB & not PTE */
1768         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1769                 req2->rq_page_table_addr_lo & CNIC_PAGE_MASK;
1770         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1771                 req2->rq_page_table_addr_hi;
1772         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1773         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1774         ictx->tstorm_st_context.tcp.flags2 |=
1775                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1776         ictx->tstorm_st_context.tcp.ooo_support_mode =
1777                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1778
1779         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1780
1781         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1782                 req2->rq_page_table_addr_lo;
1783         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1784                 req2->rq_page_table_addr_hi;
1785         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1786         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1787         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1788                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1789         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1790                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1791         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1792                 iscsi->r2tq_info.pgtbl[0];
1793         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1794                 iscsi->r2tq_info.pgtbl[1];
1795         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1796                 req1->cq_page_table_addr_lo;
1797         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1798                 req1->cq_page_table_addr_hi;
1799         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1800         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1801         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1802         ictx->ustorm_st_context.task_pbe_cache_index =
1803                 BNX2X_ISCSI_PBL_NOT_CACHED;
1804         ictx->ustorm_st_context.task_pdu_cache_index =
1805                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1806
1807         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1808                 if (j == 3) {
1809                         if (n >= n_max)
1810                                 break;
1811                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1812                         j = 0;
1813                 }
1814                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1815                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1816                         req3->qp_first_pte[j].hi;
1817                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1818                         req3->qp_first_pte[j].lo;
1819         }
1820
1821         ictx->ustorm_st_context.task_pbl_base.lo =
1822                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1823         ictx->ustorm_st_context.task_pbl_base.hi =
1824                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1825         ictx->ustorm_st_context.tce_phy_addr.lo =
1826                 iscsi->task_array_info.pgtbl[0];
1827         ictx->ustorm_st_context.tce_phy_addr.hi =
1828                 iscsi->task_array_info.pgtbl[1];
1829         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1830         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1831         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1832         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1833                 ISCSI_DEF_MAX_BURST_LEN;
1834         ictx->ustorm_st_context.negotiated_rx |=
1835                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1836                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1837
1838         ictx->cstorm_st_context.hq_pbl_base.lo =
1839                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1840         ictx->cstorm_st_context.hq_pbl_base.hi =
1841                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1842         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1843         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1844         ictx->cstorm_st_context.task_pbl_base.lo =
1845                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1846         ictx->cstorm_st_context.task_pbl_base.hi =
1847                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1848         /* CSTORM and USTORM initialization is different, CSTORM requires
1849          * CQ DB base & not PTE addr */
1850         ictx->cstorm_st_context.cq_db_base.lo =
1851                 req1->cq_page_table_addr_lo & CNIC_PAGE_MASK;
1852         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1853         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1854         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1855         for (i = 0; i < cp->num_cqs; i++) {
1856                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1857                         ISCSI_INITIAL_SN;
1858                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1859                         ISCSI_INITIAL_SN;
1860         }
1861
1862         ictx->xstorm_ag_context.cdu_reserved =
1863                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1864                                        ISCSI_CONNECTION_TYPE);
1865         ictx->ustorm_ag_context.cdu_usage =
1866                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1867                                        ISCSI_CONNECTION_TYPE);
1868         return 0;
1869
1870 }
1871
1872 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1873                                    u32 num, int *work)
1874 {
1875         struct iscsi_kwqe_conn_offload1 *req1;
1876         struct iscsi_kwqe_conn_offload2 *req2;
1877         struct cnic_local *cp = dev->cnic_priv;
1878         struct bnx2x *bp = netdev_priv(dev->netdev);
1879         struct cnic_context *ctx;
1880         struct iscsi_kcqe kcqe;
1881         struct kcqe *cqes[1];
1882         u32 l5_cid;
1883         int ret = 0;
1884
1885         if (num < 2) {
1886                 *work = num;
1887                 return -EINVAL;
1888         }
1889
1890         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1891         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1892         if ((num - 2) < req2->num_additional_wqes) {
1893                 *work = num;
1894                 return -EINVAL;
1895         }
1896         *work = 2 + req2->num_additional_wqes;
1897
1898         l5_cid = req1->iscsi_conn_id;
1899         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1900                 return -EINVAL;
1901
1902         memset(&kcqe, 0, sizeof(kcqe));
1903         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1904         kcqe.iscsi_conn_id = l5_cid;
1905         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1906
1907         ctx = &cp->ctx_tbl[l5_cid];
1908         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1909                 kcqe.completion_status =
1910                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1911                 goto done;
1912         }
1913
1914         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1915                 atomic_dec(&cp->iscsi_conn);
1916                 goto done;
1917         }
1918         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1919         if (ret) {
1920                 atomic_dec(&cp->iscsi_conn);
1921                 goto done;
1922         }
1923         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1924         if (ret < 0) {
1925                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1926                 atomic_dec(&cp->iscsi_conn);
1927                 goto done;
1928         }
1929
1930         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1931         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(bp, cp->ctx_tbl[l5_cid].cid);
1932
1933 done:
1934         cqes[0] = (struct kcqe *) &kcqe;
1935         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1936         return 0;
1937 }
1938
1939
1940 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1941 {
1942         struct cnic_local *cp = dev->cnic_priv;
1943         struct iscsi_kwqe_conn_update *req =
1944                 (struct iscsi_kwqe_conn_update *) kwqe;
1945         void *data;
1946         union l5cm_specific_data l5_data;
1947         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1948         int ret;
1949
1950         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1951                 return -EINVAL;
1952
1953         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1954         if (!data)
1955                 return -ENOMEM;
1956
1957         memcpy(data, kwqe, sizeof(struct kwqe));
1958
1959         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1960                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1961         return ret;
1962 }
1963
1964 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1965 {
1966         struct cnic_local *cp = dev->cnic_priv;
1967         struct bnx2x *bp = netdev_priv(dev->netdev);
1968         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1969         union l5cm_specific_data l5_data;
1970         int ret;
1971         u32 hw_cid;
1972
1973         init_waitqueue_head(&ctx->waitq);
1974         ctx->wait_cond = 0;
1975         memset(&l5_data, 0, sizeof(l5_data));
1976         hw_cid = BNX2X_HW_CID(bp, ctx->cid);
1977
1978         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1979                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1980
1981         if (ret == 0) {
1982                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1983                 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1984                         return -EBUSY;
1985         }
1986
1987         return 0;
1988 }
1989
1990 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1991 {
1992         struct cnic_local *cp = dev->cnic_priv;
1993         struct iscsi_kwqe_conn_destroy *req =
1994                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1995         u32 l5_cid = req->reserved0;
1996         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1997         int ret = 0;
1998         struct iscsi_kcqe kcqe;
1999         struct kcqe *cqes[1];
2000
2001         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2002                 goto skip_cfc_delete;
2003
2004         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
2005                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
2006
2007                 if (delta > (2 * HZ))
2008                         delta = 0;
2009
2010                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2011                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
2012                 goto destroy_reply;
2013         }
2014
2015         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
2016
2017 skip_cfc_delete:
2018         cnic_free_bnx2x_conn_resc(dev, l5_cid);
2019
2020         if (!ret) {
2021                 atomic_dec(&cp->iscsi_conn);
2022                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2023         }
2024
2025 destroy_reply:
2026         memset(&kcqe, 0, sizeof(kcqe));
2027         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
2028         kcqe.iscsi_conn_id = l5_cid;
2029         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
2030         kcqe.iscsi_conn_context_id = req->context_id;
2031
2032         cqes[0] = (struct kcqe *) &kcqe;
2033         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
2034
2035         return 0;
2036 }
2037
2038 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
2039                                       struct l4_kwq_connect_req1 *kwqe1,
2040                                       struct l4_kwq_connect_req3 *kwqe3,
2041                                       struct l5cm_active_conn_buffer *conn_buf)
2042 {
2043         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
2044         struct l5cm_xstorm_conn_buffer *xstorm_buf =
2045                 &conn_buf->xstorm_conn_buffer;
2046         struct l5cm_tstorm_conn_buffer *tstorm_buf =
2047                 &conn_buf->tstorm_conn_buffer;
2048         struct regpair context_addr;
2049         u32 cid = BNX2X_SW_CID(kwqe1->cid);
2050         struct in6_addr src_ip, dst_ip;
2051         int i;
2052         u32 *addrp;
2053
2054         addrp = (u32 *) &conn_addr->local_ip_addr;
2055         for (i = 0; i < 4; i++, addrp++)
2056                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2057
2058         addrp = (u32 *) &conn_addr->remote_ip_addr;
2059         for (i = 0; i < 4; i++, addrp++)
2060                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2061
2062         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
2063
2064         xstorm_buf->context_addr.hi = context_addr.hi;
2065         xstorm_buf->context_addr.lo = context_addr.lo;
2066         xstorm_buf->mss = 0xffff;
2067         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
2068         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
2069                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
2070         xstorm_buf->pseudo_header_checksum =
2071                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
2072
2073         if (kwqe3->ka_timeout) {
2074                 tstorm_buf->ka_enable = 1;
2075                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
2076                 tstorm_buf->ka_interval = kwqe3->ka_interval;
2077                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
2078         }
2079         tstorm_buf->max_rt_time = 0xffffffff;
2080 }
2081
2082 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2083 {
2084         struct bnx2x *bp = netdev_priv(dev->netdev);
2085         u32 pfid = bp->pfid;
2086         u8 *mac = dev->mac_addr;
2087
2088         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2089                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2090         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2091                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2092         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2093                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2094         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2095                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2096         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2097                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2098         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2099                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2100
2101         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2102                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2103         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2104                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2105                  mac[4]);
2106         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2107                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2108         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2109                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2110                  mac[2]);
2111         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2112                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2113         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2114                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2115                  mac[0]);
2116 }
2117
2118 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2119                               u32 num, int *work)
2120 {
2121         struct cnic_local *cp = dev->cnic_priv;
2122         struct bnx2x *bp = netdev_priv(dev->netdev);
2123         struct l4_kwq_connect_req1 *kwqe1 =
2124                 (struct l4_kwq_connect_req1 *) wqes[0];
2125         struct l4_kwq_connect_req3 *kwqe3;
2126         struct l5cm_active_conn_buffer *conn_buf;
2127         struct l5cm_conn_addr_params *conn_addr;
2128         union l5cm_specific_data l5_data;
2129         u32 l5_cid = kwqe1->pg_cid;
2130         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2131         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2132         int ret;
2133
2134         if (num < 2) {
2135                 *work = num;
2136                 return -EINVAL;
2137         }
2138
2139         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2140                 *work = 3;
2141         else
2142                 *work = 2;
2143
2144         if (num < *work) {
2145                 *work = num;
2146                 return -EINVAL;
2147         }
2148
2149         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2150                 netdev_err(dev->netdev, "conn_buf size too big\n");
2151                 return -ENOMEM;
2152         }
2153         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2154         if (!conn_buf)
2155                 return -ENOMEM;
2156
2157         memset(conn_buf, 0, sizeof(*conn_buf));
2158
2159         conn_addr = &conn_buf->conn_addr_buf;
2160         conn_addr->remote_addr_0 = csk->ha[0];
2161         conn_addr->remote_addr_1 = csk->ha[1];
2162         conn_addr->remote_addr_2 = csk->ha[2];
2163         conn_addr->remote_addr_3 = csk->ha[3];
2164         conn_addr->remote_addr_4 = csk->ha[4];
2165         conn_addr->remote_addr_5 = csk->ha[5];
2166
2167         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2168                 struct l4_kwq_connect_req2 *kwqe2 =
2169                         (struct l4_kwq_connect_req2 *) wqes[1];
2170
2171                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2172                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2173                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2174
2175                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2176                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2177                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2178                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2179         }
2180         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2181
2182         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2183         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2184         conn_addr->local_tcp_port = kwqe1->src_port;
2185         conn_addr->remote_tcp_port = kwqe1->dst_port;
2186
2187         conn_addr->pmtu = kwqe3->pmtu;
2188         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2189
2190         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2191                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(bp->pfid), csk->vlan_id);
2192
2193         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2194                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2195         if (!ret)
2196                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2197
2198         return ret;
2199 }
2200
2201 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2202 {
2203         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2204         union l5cm_specific_data l5_data;
2205         int ret;
2206
2207         memset(&l5_data, 0, sizeof(l5_data));
2208         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2209                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2210         return ret;
2211 }
2212
2213 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2214 {
2215         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2216         union l5cm_specific_data l5_data;
2217         int ret;
2218
2219         memset(&l5_data, 0, sizeof(l5_data));
2220         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2221                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2222         return ret;
2223 }
2224 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2225 {
2226         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2227         struct l4_kcq kcqe;
2228         struct kcqe *cqes[1];
2229
2230         memset(&kcqe, 0, sizeof(kcqe));
2231         kcqe.pg_host_opaque = req->host_opaque;
2232         kcqe.pg_cid = req->host_opaque;
2233         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2234         cqes[0] = (struct kcqe *) &kcqe;
2235         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2236         return 0;
2237 }
2238
2239 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2240 {
2241         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2242         struct l4_kcq kcqe;
2243         struct kcqe *cqes[1];
2244
2245         memset(&kcqe, 0, sizeof(kcqe));
2246         kcqe.pg_host_opaque = req->pg_host_opaque;
2247         kcqe.pg_cid = req->pg_cid;
2248         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2249         cqes[0] = (struct kcqe *) &kcqe;
2250         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2251         return 0;
2252 }
2253
2254 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2255 {
2256         struct fcoe_kwqe_stat *req;
2257         struct fcoe_stat_ramrod_params *fcoe_stat;
2258         union l5cm_specific_data l5_data;
2259         struct cnic_local *cp = dev->cnic_priv;
2260         struct bnx2x *bp = netdev_priv(dev->netdev);
2261         int ret;
2262         u32 cid;
2263
2264         req = (struct fcoe_kwqe_stat *) kwqe;
2265         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2266
2267         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2268         if (!fcoe_stat)
2269                 return -ENOMEM;
2270
2271         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2272         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2273
2274         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2275                                   FCOE_CONNECTION_TYPE, &l5_data);
2276         return ret;
2277 }
2278
2279 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2280                                  u32 num, int *work)
2281 {
2282         int ret;
2283         struct cnic_local *cp = dev->cnic_priv;
2284         struct bnx2x *bp = netdev_priv(dev->netdev);
2285         u32 cid;
2286         struct fcoe_init_ramrod_params *fcoe_init;
2287         struct fcoe_kwqe_init1 *req1;
2288         struct fcoe_kwqe_init2 *req2;
2289         struct fcoe_kwqe_init3 *req3;
2290         union l5cm_specific_data l5_data;
2291
2292         if (num < 3) {
2293                 *work = num;
2294                 return -EINVAL;
2295         }
2296         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2297         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2298         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2299         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2300                 *work = 1;
2301                 return -EINVAL;
2302         }
2303         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2304                 *work = 2;
2305                 return -EINVAL;
2306         }
2307
2308         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2309                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2310                 return -ENOMEM;
2311         }
2312         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2313         if (!fcoe_init)
2314                 return -ENOMEM;
2315
2316         memset(fcoe_init, 0, sizeof(*fcoe_init));
2317         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2318         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2319         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2320         fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2321         fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2322         fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2323
2324         fcoe_init->sb_num = cp->status_blk_num;
2325         fcoe_init->eq_prod = MAX_KCQ_IDX;
2326         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2327         cp->kcq2.sw_prod_idx = 0;
2328
2329         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2330         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2331                                   FCOE_CONNECTION_TYPE, &l5_data);
2332         *work = 3;
2333         return ret;
2334 }
2335
2336 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2337                                  u32 num, int *work)
2338 {
2339         int ret = 0;
2340         u32 cid = -1, l5_cid;
2341         struct cnic_local *cp = dev->cnic_priv;
2342         struct bnx2x *bp = netdev_priv(dev->netdev);
2343         struct fcoe_kwqe_conn_offload1 *req1;
2344         struct fcoe_kwqe_conn_offload2 *req2;
2345         struct fcoe_kwqe_conn_offload3 *req3;
2346         struct fcoe_kwqe_conn_offload4 *req4;
2347         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2348         struct cnic_context *ctx;
2349         struct fcoe_context *fctx;
2350         struct regpair ctx_addr;
2351         union l5cm_specific_data l5_data;
2352         struct fcoe_kcqe kcqe;
2353         struct kcqe *cqes[1];
2354
2355         if (num < 4) {
2356                 *work = num;
2357                 return -EINVAL;
2358         }
2359         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2360         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2361         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2362         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2363
2364         *work = 4;
2365
2366         l5_cid = req1->fcoe_conn_id;
2367         if (l5_cid >= dev->max_fcoe_conn)
2368                 goto err_reply;
2369
2370         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2371
2372         ctx = &cp->ctx_tbl[l5_cid];
2373         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2374                 goto err_reply;
2375
2376         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2377         if (ret) {
2378                 ret = 0;
2379                 goto err_reply;
2380         }
2381         cid = ctx->cid;
2382
2383         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2384         if (fctx) {
2385                 u32 hw_cid = BNX2X_HW_CID(bp, cid);
2386                 u32 val;
2387
2388                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2389                                              FCOE_CONNECTION_TYPE);
2390                 fctx->xstorm_ag_context.cdu_reserved = val;
2391                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2392                                              FCOE_CONNECTION_TYPE);
2393                 fctx->ustorm_ag_context.cdu_usage = val;
2394         }
2395         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2396                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2397                 goto err_reply;
2398         }
2399         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2400         if (!fcoe_offload)
2401                 goto err_reply;
2402
2403         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2404         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2405         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2406         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2407         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2408
2409         cid = BNX2X_HW_CID(bp, cid);
2410         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2411                                   FCOE_CONNECTION_TYPE, &l5_data);
2412         if (!ret)
2413                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2414
2415         return ret;
2416
2417 err_reply:
2418         if (cid != -1)
2419                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2420
2421         memset(&kcqe, 0, sizeof(kcqe));
2422         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2423         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2424         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2425
2426         cqes[0] = (struct kcqe *) &kcqe;
2427         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2428         return ret;
2429 }
2430
2431 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2432 {
2433         struct fcoe_kwqe_conn_enable_disable *req;
2434         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2435         union l5cm_specific_data l5_data;
2436         int ret;
2437         u32 cid, l5_cid;
2438         struct cnic_local *cp = dev->cnic_priv;
2439
2440         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2441         cid = req->context_id;
2442         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2443
2444         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2445                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2446                 return -ENOMEM;
2447         }
2448         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2449         if (!fcoe_enable)
2450                 return -ENOMEM;
2451
2452         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2453         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2454         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2455                                   FCOE_CONNECTION_TYPE, &l5_data);
2456         return ret;
2457 }
2458
2459 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2460 {
2461         struct fcoe_kwqe_conn_enable_disable *req;
2462         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2463         union l5cm_specific_data l5_data;
2464         int ret;
2465         u32 cid, l5_cid;
2466         struct cnic_local *cp = dev->cnic_priv;
2467
2468         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2469         cid = req->context_id;
2470         l5_cid = req->conn_id;
2471         if (l5_cid >= dev->max_fcoe_conn)
2472                 return -EINVAL;
2473
2474         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2475
2476         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2477                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2478                 return -ENOMEM;
2479         }
2480         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2481         if (!fcoe_disable)
2482                 return -ENOMEM;
2483
2484         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2485         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2486         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2487                                   FCOE_CONNECTION_TYPE, &l5_data);
2488         return ret;
2489 }
2490
2491 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2492 {
2493         struct fcoe_kwqe_conn_destroy *req;
2494         union l5cm_specific_data l5_data;
2495         int ret;
2496         u32 cid, l5_cid;
2497         struct cnic_local *cp = dev->cnic_priv;
2498         struct cnic_context *ctx;
2499         struct fcoe_kcqe kcqe;
2500         struct kcqe *cqes[1];
2501
2502         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2503         cid = req->context_id;
2504         l5_cid = req->conn_id;
2505         if (l5_cid >= dev->max_fcoe_conn)
2506                 return -EINVAL;
2507
2508         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2509
2510         ctx = &cp->ctx_tbl[l5_cid];
2511
2512         init_waitqueue_head(&ctx->waitq);
2513         ctx->wait_cond = 0;
2514
2515         memset(&kcqe, 0, sizeof(kcqe));
2516         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2517         memset(&l5_data, 0, sizeof(l5_data));
2518         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2519                                   FCOE_CONNECTION_TYPE, &l5_data);
2520         if (ret == 0) {
2521                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2522                 if (ctx->wait_cond)
2523                         kcqe.completion_status = 0;
2524         }
2525
2526         set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2527         queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2528
2529         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2530         kcqe.fcoe_conn_id = req->conn_id;
2531         kcqe.fcoe_conn_context_id = cid;
2532
2533         cqes[0] = (struct kcqe *) &kcqe;
2534         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2535         return ret;
2536 }
2537
2538 static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2539 {
2540         struct cnic_local *cp = dev->cnic_priv;
2541         u32 i;
2542
2543         for (i = start_cid; i < cp->max_cid_space; i++) {
2544                 struct cnic_context *ctx = &cp->ctx_tbl[i];
2545                 int j;
2546
2547                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2548                         msleep(10);
2549
2550                 for (j = 0; j < 5; j++) {
2551                         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2552                                 break;
2553                         msleep(20);
2554                 }
2555
2556                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2557                         netdev_warn(dev->netdev, "CID %x not deleted\n",
2558                                    ctx->cid);
2559         }
2560 }
2561
2562 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2563 {
2564         union l5cm_specific_data l5_data;
2565         struct cnic_local *cp = dev->cnic_priv;
2566         struct bnx2x *bp = netdev_priv(dev->netdev);
2567         int ret;
2568         u32 cid;
2569
2570         cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2571
2572         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2573
2574         memset(&l5_data, 0, sizeof(l5_data));
2575         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2576                                   FCOE_CONNECTION_TYPE, &l5_data);
2577         return ret;
2578 }
2579
2580 static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2581 {
2582         struct cnic_local *cp = dev->cnic_priv;
2583         struct kcqe kcqe;
2584         struct kcqe *cqes[1];
2585         u32 cid;
2586         u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2587         u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2588         u32 kcqe_op;
2589         int ulp_type;
2590
2591         cid = kwqe->kwqe_info0;
2592         memset(&kcqe, 0, sizeof(kcqe));
2593
2594         if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2595                 u32 l5_cid = 0;
2596
2597                 ulp_type = CNIC_ULP_FCOE;
2598                 if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2599                         struct fcoe_kwqe_conn_enable_disable *req;
2600
2601                         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2602                         kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2603                         cid = req->context_id;
2604                         l5_cid = req->conn_id;
2605                 } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2606                         kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2607                 } else {
2608                         return;
2609                 }
2610                 kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2611                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2612                 kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2613                 kcqe.kcqe_info2 = cid;
2614                 kcqe.kcqe_info0 = l5_cid;
2615
2616         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2617                 ulp_type = CNIC_ULP_ISCSI;
2618                 if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2619                         cid = kwqe->kwqe_info1;
2620
2621                 kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2622                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2623                 kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2624                 kcqe.kcqe_info2 = cid;
2625                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2626
2627         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2628                 struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2629
2630                 ulp_type = CNIC_ULP_L4;
2631                 if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2632                         kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2633                 else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2634                         kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2635                 else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2636                         kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2637                 else
2638                         return;
2639
2640                 kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2641                                     KCQE_FLAGS_LAYER_MASK_L4;
2642                 l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2643                 l4kcqe->cid = cid;
2644                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2645         } else {
2646                 return;
2647         }
2648
2649         cqes[0] = &kcqe;
2650         cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2651 }
2652
2653 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2654                                          struct kwqe *wqes[], u32 num_wqes)
2655 {
2656         int i, work, ret;
2657         u32 opcode;
2658         struct kwqe *kwqe;
2659
2660         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2661                 return -EAGAIN;         /* bnx2 is down */
2662
2663         for (i = 0; i < num_wqes; ) {
2664                 kwqe = wqes[i];
2665                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2666                 work = 1;
2667
2668                 switch (opcode) {
2669                 case ISCSI_KWQE_OPCODE_INIT1:
2670                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2671                         break;
2672                 case ISCSI_KWQE_OPCODE_INIT2:
2673                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2674                         break;
2675                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2676                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2677                                                      num_wqes - i, &work);
2678                         break;
2679                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2680                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2681                         break;
2682                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2683                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2684                         break;
2685                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2686                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2687                                                  &work);
2688                         break;
2689                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2690                         ret = cnic_bnx2x_close(dev, kwqe);
2691                         break;
2692                 case L4_KWQE_OPCODE_VALUE_RESET:
2693                         ret = cnic_bnx2x_reset(dev, kwqe);
2694                         break;
2695                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2696                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2697                         break;
2698                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2699                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2700                         break;
2701                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2702                         ret = 0;
2703                         break;
2704                 default:
2705                         ret = 0;
2706                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2707                                    opcode);
2708                         break;
2709                 }
2710                 if (ret < 0) {
2711                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2712                                    opcode);
2713
2714                         /* Possibly bnx2x parity error, send completion
2715                          * to ulp drivers with error code to speed up
2716                          * cleanup and reset recovery.
2717                          */
2718                         if (ret == -EIO || ret == -EAGAIN)
2719                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2720                 }
2721                 i += work;
2722         }
2723         return 0;
2724 }
2725
2726 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2727                                         struct kwqe *wqes[], u32 num_wqes)
2728 {
2729         struct bnx2x *bp = netdev_priv(dev->netdev);
2730         int i, work, ret;
2731         u32 opcode;
2732         struct kwqe *kwqe;
2733
2734         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2735                 return -EAGAIN;         /* bnx2 is down */
2736
2737         if (!BNX2X_CHIP_IS_E2_PLUS(bp))
2738                 return -EINVAL;
2739
2740         for (i = 0; i < num_wqes; ) {
2741                 kwqe = wqes[i];
2742                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2743                 work = 1;
2744
2745                 switch (opcode) {
2746                 case FCOE_KWQE_OPCODE_INIT1:
2747                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2748                                                     num_wqes - i, &work);
2749                         break;
2750                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2751                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2752                                                     num_wqes - i, &work);
2753                         break;
2754                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2755                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2756                         break;
2757                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2758                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2759                         break;
2760                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2761                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2762                         break;
2763                 case FCOE_KWQE_OPCODE_DESTROY:
2764                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2765                         break;
2766                 case FCOE_KWQE_OPCODE_STAT:
2767                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2768                         break;
2769                 default:
2770                         ret = 0;
2771                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2772                                    opcode);
2773                         break;
2774                 }
2775                 if (ret < 0) {
2776                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2777                                    opcode);
2778
2779                         /* Possibly bnx2x parity error, send completion
2780                          * to ulp drivers with error code to speed up
2781                          * cleanup and reset recovery.
2782                          */
2783                         if (ret == -EIO || ret == -EAGAIN)
2784                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2785                 }
2786                 i += work;
2787         }
2788         return 0;
2789 }
2790
2791 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2792                                    u32 num_wqes)
2793 {
2794         int ret = -EINVAL;
2795         u32 layer_code;
2796
2797         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2798                 return -EAGAIN;         /* bnx2x is down */
2799
2800         if (!num_wqes)
2801                 return 0;
2802
2803         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2804         switch (layer_code) {
2805         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2806         case KWQE_FLAGS_LAYER_MASK_L4:
2807         case KWQE_FLAGS_LAYER_MASK_L2:
2808                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2809                 break;
2810
2811         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2812                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2813                 break;
2814         }
2815         return ret;
2816 }
2817
2818 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2819 {
2820         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2821                 return KCQE_FLAGS_LAYER_MASK_L4;
2822
2823         return opflag & KCQE_FLAGS_LAYER_MASK;
2824 }
2825
2826 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2827 {
2828         struct cnic_local *cp = dev->cnic_priv;
2829         int i, j, comp = 0;
2830
2831         i = 0;
2832         j = 1;
2833         while (num_cqes) {
2834                 struct cnic_ulp_ops *ulp_ops;
2835                 int ulp_type;
2836                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2837                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2838
2839                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2840                         comp++;
2841
2842                 while (j < num_cqes) {
2843                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2844
2845                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2846                                 break;
2847
2848                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2849                                 comp++;
2850                         j++;
2851                 }
2852
2853                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2854                         ulp_type = CNIC_ULP_RDMA;
2855                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2856                         ulp_type = CNIC_ULP_ISCSI;
2857                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2858                         ulp_type = CNIC_ULP_FCOE;
2859                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2860                         ulp_type = CNIC_ULP_L4;
2861                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2862                         goto end;
2863                 else {
2864                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2865                                    kcqe_op_flag);
2866                         goto end;
2867                 }
2868
2869                 rcu_read_lock();
2870                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2871                 if (likely(ulp_ops)) {
2872                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2873                                                   cp->completed_kcq + i, j);
2874                 }
2875                 rcu_read_unlock();
2876 end:
2877                 num_cqes -= j;
2878                 i += j;
2879                 j = 1;
2880         }
2881         if (unlikely(comp))
2882                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2883 }
2884
2885 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2886 {
2887         struct cnic_local *cp = dev->cnic_priv;
2888         u16 i, ri, hw_prod, last;
2889         struct kcqe *kcqe;
2890         int kcqe_cnt = 0, last_cnt = 0;
2891
2892         i = ri = last = info->sw_prod_idx;
2893         ri &= MAX_KCQ_IDX;
2894         hw_prod = *info->hw_prod_idx_ptr;
2895         hw_prod = info->hw_idx(hw_prod);
2896
2897         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2898                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2899                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2900                 i = info->next_idx(i);
2901                 ri = i & MAX_KCQ_IDX;
2902                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2903                         last_cnt = kcqe_cnt;
2904                         last = i;
2905                 }
2906         }
2907
2908         info->sw_prod_idx = last;
2909         return last_cnt;
2910 }
2911
2912 static int cnic_l2_completion(struct cnic_local *cp)
2913 {
2914         u16 hw_cons, sw_cons;
2915         struct cnic_uio_dev *udev = cp->udev;
2916         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2917                                         (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
2918         u32 cmd;
2919         int comp = 0;
2920
2921         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2922                 return 0;
2923
2924         hw_cons = *cp->rx_cons_ptr;
2925         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2926                 hw_cons++;
2927
2928         sw_cons = cp->rx_cons;
2929         while (sw_cons != hw_cons) {
2930                 u8 cqe_fp_flags;
2931
2932                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2933                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2934                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2935                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2936                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2937                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2938                             cmd == RAMROD_CMD_ID_ETH_HALT)
2939                                 comp++;
2940                 }
2941                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2942         }
2943         return comp;
2944 }
2945
2946 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2947 {
2948         u16 rx_cons, tx_cons;
2949         int comp = 0;
2950
2951         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2952                 return;
2953
2954         rx_cons = *cp->rx_cons_ptr;
2955         tx_cons = *cp->tx_cons_ptr;
2956         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2957                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2958                         comp = cnic_l2_completion(cp);
2959
2960                 cp->tx_cons = tx_cons;
2961                 cp->rx_cons = rx_cons;
2962
2963                 if (cp->udev)
2964                         uio_event_notify(&cp->udev->cnic_uinfo);
2965         }
2966         if (comp)
2967                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2968 }
2969
2970 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2971 {
2972         struct cnic_local *cp = dev->cnic_priv;
2973         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2974         int kcqe_cnt;
2975
2976         /* status block index must be read before reading other fields */
2977         rmb();
2978         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2979
2980         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2981
2982                 service_kcqes(dev, kcqe_cnt);
2983
2984                 /* Tell compiler that status_blk fields can change. */
2985                 barrier();
2986                 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2987                 /* status block index must be read first */
2988                 rmb();
2989                 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2990         }
2991
2992         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2993
2994         cnic_chk_pkt_rings(cp);
2995
2996         return status_idx;
2997 }
2998
2999 static int cnic_service_bnx2(void *data, void *status_blk)
3000 {
3001         struct cnic_dev *dev = data;
3002
3003         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3004                 struct status_block *sblk = status_blk;
3005
3006                 return sblk->status_idx;
3007         }
3008
3009         return cnic_service_bnx2_queues(dev);
3010 }
3011
3012 static void cnic_service_bnx2_msix(unsigned long data)
3013 {
3014         struct cnic_dev *dev = (struct cnic_dev *) data;
3015         struct cnic_local *cp = dev->cnic_priv;
3016
3017         cp->last_status_idx = cnic_service_bnx2_queues(dev);
3018
3019         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3020                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3021 }
3022
3023 static void cnic_doirq(struct cnic_dev *dev)
3024 {
3025         struct cnic_local *cp = dev->cnic_priv;
3026
3027         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3028                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
3029
3030                 prefetch(cp->status_blk.gen);
3031                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
3032
3033                 tasklet_schedule(&cp->cnic_irq_task);
3034         }
3035 }
3036
3037 static irqreturn_t cnic_irq(int irq, void *dev_instance)
3038 {
3039         struct cnic_dev *dev = dev_instance;
3040         struct cnic_local *cp = dev->cnic_priv;
3041
3042         if (cp->ack_int)
3043                 cp->ack_int(dev);
3044
3045         cnic_doirq(dev);
3046
3047         return IRQ_HANDLED;
3048 }
3049
3050 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
3051                                       u16 index, u8 op, u8 update)
3052 {
3053         struct bnx2x *bp = netdev_priv(dev->netdev);
3054         u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp) * 32 +
3055                        COMMAND_REG_INT_ACK);
3056         struct igu_ack_register igu_ack;
3057
3058         igu_ack.status_block_index = index;
3059         igu_ack.sb_id_and_flags =
3060                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
3061                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3062                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3063                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3064
3065         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3066 }
3067
3068 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3069                             u16 index, u8 op, u8 update)
3070 {
3071         struct igu_regular cmd_data;
3072         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3073
3074         cmd_data.sb_id_and_flags =
3075                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3076                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3077                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
3078                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3079
3080
3081         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3082 }
3083
3084 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3085 {
3086         struct cnic_local *cp = dev->cnic_priv;
3087
3088         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3089                            IGU_INT_DISABLE, 0);
3090 }
3091
3092 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3093 {
3094         struct cnic_local *cp = dev->cnic_priv;
3095
3096         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3097                         IGU_INT_DISABLE, 0);
3098 }
3099
3100 static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
3101 {
3102         struct cnic_local *cp = dev->cnic_priv;
3103
3104         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
3105                            IGU_INT_ENABLE, 1);
3106 }
3107
3108 static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
3109 {
3110         struct cnic_local *cp = dev->cnic_priv;
3111
3112         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
3113                         IGU_INT_ENABLE, 1);
3114 }
3115
3116 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3117 {
3118         u32 last_status = *info->status_idx_ptr;
3119         int kcqe_cnt;
3120
3121         /* status block index must be read before reading the KCQ */
3122         rmb();
3123         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3124
3125                 service_kcqes(dev, kcqe_cnt);
3126
3127                 /* Tell compiler that sblk fields can change. */
3128                 barrier();
3129
3130                 last_status = *info->status_idx_ptr;
3131                 /* status block index must be read before reading the KCQ */
3132                 rmb();
3133         }
3134         return last_status;
3135 }
3136
3137 static void cnic_service_bnx2x_bh(unsigned long data)
3138 {
3139         struct cnic_dev *dev = (struct cnic_dev *) data;
3140         struct cnic_local *cp = dev->cnic_priv;
3141         struct bnx2x *bp = netdev_priv(dev->netdev);
3142         u32 status_idx, new_status_idx;
3143
3144         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3145                 return;
3146
3147         while (1) {
3148                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3149
3150                 CNIC_WR16(dev, cp->kcq1.io_addr,
3151                           cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3152
3153                 if (!CNIC_SUPPORTS_FCOE(bp)) {
3154                         cp->arm_int(dev, status_idx);
3155                         break;
3156                 }
3157
3158                 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3159
3160                 if (new_status_idx != status_idx)
3161                         continue;
3162
3163                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3164                           MAX_KCQ_IDX);
3165
3166                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3167                                 status_idx, IGU_INT_ENABLE, 1);
3168
3169                 break;
3170         }
3171 }
3172
3173 static int cnic_service_bnx2x(void *data, void *status_blk)
3174 {
3175         struct cnic_dev *dev = data;
3176         struct cnic_local *cp = dev->cnic_priv;
3177
3178         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3179                 cnic_doirq(dev);
3180
3181         cnic_chk_pkt_rings(cp);
3182
3183         return 0;
3184 }
3185
3186 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3187 {
3188         struct cnic_ulp_ops *ulp_ops;
3189
3190         if (if_type == CNIC_ULP_ISCSI)
3191                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3192
3193         mutex_lock(&cnic_lock);
3194         ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3195                                             lockdep_is_held(&cnic_lock));
3196         if (!ulp_ops) {
3197                 mutex_unlock(&cnic_lock);
3198                 return;
3199         }
3200         set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3201         mutex_unlock(&cnic_lock);
3202
3203         if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3204                 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3205
3206         clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3207 }
3208
3209 static void cnic_ulp_stop(struct cnic_dev *dev)
3210 {
3211         struct cnic_local *cp = dev->cnic_priv;
3212         int if_type;
3213
3214         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3215                 cnic_ulp_stop_one(cp, if_type);
3216 }
3217
3218 static void cnic_ulp_start(struct cnic_dev *dev)
3219 {
3220         struct cnic_local *cp = dev->cnic_priv;
3221         int if_type;
3222
3223         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3224                 struct cnic_ulp_ops *ulp_ops;
3225
3226                 mutex_lock(&cnic_lock);
3227                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3228                                                     lockdep_is_held(&cnic_lock));
3229                 if (!ulp_ops || !ulp_ops->cnic_start) {
3230                         mutex_unlock(&cnic_lock);
3231                         continue;
3232                 }
3233                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3234                 mutex_unlock(&cnic_lock);
3235
3236                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3237                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3238
3239                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3240         }
3241 }
3242
3243 static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3244 {
3245         struct cnic_local *cp = dev->cnic_priv;
3246         struct cnic_ulp_ops *ulp_ops;
3247         int rc;
3248
3249         mutex_lock(&cnic_lock);
3250         ulp_ops = rcu_dereference_protected(cp->ulp_ops[ulp_type],
3251                                             lockdep_is_held(&cnic_lock));
3252         if (ulp_ops && ulp_ops->cnic_get_stats)
3253                 rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3254         else
3255                 rc = -ENODEV;
3256         mutex_unlock(&cnic_lock);
3257         return rc;
3258 }
3259
3260 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3261 {
3262         struct cnic_dev *dev = data;
3263         int ulp_type = CNIC_ULP_ISCSI;
3264
3265         switch (info->cmd) {
3266         case CNIC_CTL_STOP_CMD:
3267                 cnic_hold(dev);
3268
3269                 cnic_ulp_stop(dev);
3270                 cnic_stop_hw(dev);
3271
3272                 cnic_put(dev);
3273                 break;
3274         case CNIC_CTL_START_CMD:
3275                 cnic_hold(dev);
3276
3277                 if (!cnic_start_hw(dev))
3278                         cnic_ulp_start(dev);
3279
3280                 cnic_put(dev);
3281                 break;
3282         case CNIC_CTL_STOP_ISCSI_CMD: {
3283                 struct cnic_local *cp = dev->cnic_priv;
3284                 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3285                 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3286                 break;
3287         }
3288         case CNIC_CTL_COMPLETION_CMD: {
3289                 struct cnic_ctl_completion *comp = &info->data.comp;
3290                 u32 cid = BNX2X_SW_CID(comp->cid);
3291                 u32 l5_cid;
3292                 struct cnic_local *cp = dev->cnic_priv;
3293
3294                 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
3295                         break;
3296
3297                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3298                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3299
3300                         if (unlikely(comp->error)) {
3301                                 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3302                                 netdev_err(dev->netdev,
3303                                            "CID %x CFC delete comp error %x\n",
3304                                            cid, comp->error);
3305                         }
3306
3307                         ctx->wait_cond = 1;
3308                         wake_up(&ctx->waitq);
3309                 }
3310                 break;
3311         }
3312         case CNIC_CTL_FCOE_STATS_GET_CMD:
3313                 ulp_type = CNIC_ULP_FCOE;
3314                 fallthrough;
3315         case CNIC_CTL_ISCSI_STATS_GET_CMD:
3316                 cnic_hold(dev);
3317                 cnic_copy_ulp_stats(dev, ulp_type);
3318                 cnic_put(dev);
3319                 break;
3320
3321         default:
3322                 return -EINVAL;
3323         }
3324         return 0;
3325 }
3326
3327 static void cnic_ulp_init(struct cnic_dev *dev)
3328 {
3329         int i;
3330         struct cnic_local *cp = dev->cnic_priv;
3331
3332         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3333                 struct cnic_ulp_ops *ulp_ops;
3334
3335                 mutex_lock(&cnic_lock);
3336                 ulp_ops = cnic_ulp_tbl_prot(i);
3337                 if (!ulp_ops || !ulp_ops->cnic_init) {
3338                         mutex_unlock(&cnic_lock);
3339                         continue;
3340                 }
3341                 ulp_get(ulp_ops);
3342                 mutex_unlock(&cnic_lock);
3343
3344                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3345                         ulp_ops->cnic_init(dev);
3346
3347                 ulp_put(ulp_ops);
3348         }
3349 }
3350
3351 static void cnic_ulp_exit(struct cnic_dev *dev)
3352 {
3353         int i;
3354         struct cnic_local *cp = dev->cnic_priv;
3355
3356         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3357                 struct cnic_ulp_ops *ulp_ops;
3358
3359                 mutex_lock(&cnic_lock);
3360                 ulp_ops = cnic_ulp_tbl_prot(i);
3361                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3362                         mutex_unlock(&cnic_lock);
3363                         continue;
3364                 }
3365                 ulp_get(ulp_ops);
3366                 mutex_unlock(&cnic_lock);
3367
3368                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3369                         ulp_ops->cnic_exit(dev);
3370
3371                 ulp_put(ulp_ops);
3372         }
3373 }
3374
3375 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3376 {
3377         struct cnic_dev *dev = csk->dev;
3378         struct l4_kwq_offload_pg *l4kwqe;
3379         struct kwqe *wqes[1];
3380
3381         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3382         memset(l4kwqe, 0, sizeof(*l4kwqe));
3383         wqes[0] = (struct kwqe *) l4kwqe;
3384
3385         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3386         l4kwqe->flags =
3387                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3388         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3389
3390         l4kwqe->da0 = csk->ha[0];
3391         l4kwqe->da1 = csk->ha[1];
3392         l4kwqe->da2 = csk->ha[2];
3393         l4kwqe->da3 = csk->ha[3];
3394         l4kwqe->da4 = csk->ha[4];
3395         l4kwqe->da5 = csk->ha[5];
3396
3397         l4kwqe->sa0 = dev->mac_addr[0];
3398         l4kwqe->sa1 = dev->mac_addr[1];
3399         l4kwqe->sa2 = dev->mac_addr[2];
3400         l4kwqe->sa3 = dev->mac_addr[3];
3401         l4kwqe->sa4 = dev->mac_addr[4];
3402         l4kwqe->sa5 = dev->mac_addr[5];
3403
3404         l4kwqe->etype = ETH_P_IP;
3405         l4kwqe->ipid_start = DEF_IPID_START;
3406         l4kwqe->host_opaque = csk->l5_cid;
3407
3408         if (csk->vlan_id) {
3409                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3410                 l4kwqe->vlan_tag = csk->vlan_id;
3411                 l4kwqe->l2hdr_nbytes += 4;
3412         }
3413
3414         return dev->submit_kwqes(dev, wqes, 1);
3415 }
3416
3417 static int cnic_cm_update_pg(struct cnic_sock *csk)
3418 {
3419         struct cnic_dev *dev = csk->dev;
3420         struct l4_kwq_update_pg *l4kwqe;
3421         struct kwqe *wqes[1];
3422
3423         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3424         memset(l4kwqe, 0, sizeof(*l4kwqe));
3425         wqes[0] = (struct kwqe *) l4kwqe;
3426
3427         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3428         l4kwqe->flags =
3429                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3430         l4kwqe->pg_cid = csk->pg_cid;
3431
3432         l4kwqe->da0 = csk->ha[0];
3433         l4kwqe->da1 = csk->ha[1];
3434         l4kwqe->da2 = csk->ha[2];
3435         l4kwqe->da3 = csk->ha[3];
3436         l4kwqe->da4 = csk->ha[4];
3437         l4kwqe->da5 = csk->ha[5];
3438
3439         l4kwqe->pg_host_opaque = csk->l5_cid;
3440         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3441
3442         return dev->submit_kwqes(dev, wqes, 1);
3443 }
3444
3445 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3446 {
3447         struct cnic_dev *dev = csk->dev;
3448         struct l4_kwq_upload *l4kwqe;
3449         struct kwqe *wqes[1];
3450
3451         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3452         memset(l4kwqe, 0, sizeof(*l4kwqe));
3453         wqes[0] = (struct kwqe *) l4kwqe;
3454
3455         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3456         l4kwqe->flags =
3457                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3458         l4kwqe->cid = csk->pg_cid;
3459
3460         return dev->submit_kwqes(dev, wqes, 1);
3461 }
3462
3463 static int cnic_cm_conn_req(struct cnic_sock *csk)
3464 {
3465         struct cnic_dev *dev = csk->dev;
3466         struct l4_kwq_connect_req1 *l4kwqe1;
3467         struct l4_kwq_connect_req2 *l4kwqe2;
3468         struct l4_kwq_connect_req3 *l4kwqe3;
3469         struct kwqe *wqes[3];
3470         u8 tcp_flags = 0;
3471         int num_wqes = 2;
3472
3473         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3474         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3475         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3476         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3477         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3478         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3479
3480         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3481         l4kwqe3->flags =
3482                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3483         l4kwqe3->ka_timeout = csk->ka_timeout;
3484         l4kwqe3->ka_interval = csk->ka_interval;
3485         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3486         l4kwqe3->tos = csk->tos;
3487         l4kwqe3->ttl = csk->ttl;
3488         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3489         l4kwqe3->pmtu = csk->mtu;
3490         l4kwqe3->rcv_buf = csk->rcv_buf;
3491         l4kwqe3->snd_buf = csk->snd_buf;
3492         l4kwqe3->seed = csk->seed;
3493
3494         wqes[0] = (struct kwqe *) l4kwqe1;
3495         if (test_bit(SK_F_IPV6, &csk->flags)) {
3496                 wqes[1] = (struct kwqe *) l4kwqe2;
3497                 wqes[2] = (struct kwqe *) l4kwqe3;
3498                 num_wqes = 3;
3499
3500                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3501                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3502                 l4kwqe2->flags =
3503                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3504                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3505                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3506                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3507                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3508                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3509                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3510                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3511                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3512                                sizeof(struct tcphdr);
3513         } else {
3514                 wqes[1] = (struct kwqe *) l4kwqe3;
3515                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3516                                sizeof(struct tcphdr);
3517         }
3518
3519         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3520         l4kwqe1->flags =
3521                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3522                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3523         l4kwqe1->cid = csk->cid;
3524         l4kwqe1->pg_cid = csk->pg_cid;
3525         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3526         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3527         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3528         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3529         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3530                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3531         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3532                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3533         if (csk->tcp_flags & SK_TCP_NAGLE)
3534                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3535         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3536                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3537         if (csk->tcp_flags & SK_TCP_SACK)
3538                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3539         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3540                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3541
3542         l4kwqe1->tcp_flags = tcp_flags;
3543
3544         return dev->submit_kwqes(dev, wqes, num_wqes);
3545 }
3546
3547 static int cnic_cm_close_req(struct cnic_sock *csk)
3548 {
3549         struct cnic_dev *dev = csk->dev;
3550         struct l4_kwq_close_req *l4kwqe;
3551         struct kwqe *wqes[1];
3552
3553         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3554         memset(l4kwqe, 0, sizeof(*l4kwqe));
3555         wqes[0] = (struct kwqe *) l4kwqe;
3556
3557         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3558         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3559         l4kwqe->cid = csk->cid;
3560
3561         return dev->submit_kwqes(dev, wqes, 1);
3562 }
3563
3564 static int cnic_cm_abort_req(struct cnic_sock *csk)
3565 {
3566         struct cnic_dev *dev = csk->dev;
3567         struct l4_kwq_reset_req *l4kwqe;
3568         struct kwqe *wqes[1];
3569
3570         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3571         memset(l4kwqe, 0, sizeof(*l4kwqe));
3572         wqes[0] = (struct kwqe *) l4kwqe;
3573
3574         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3575         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3576         l4kwqe->cid = csk->cid;
3577
3578         return dev->submit_kwqes(dev, wqes, 1);
3579 }
3580
3581 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3582                           u32 l5_cid, struct cnic_sock **csk, void *context)
3583 {
3584         struct cnic_local *cp = dev->cnic_priv;
3585         struct cnic_sock *csk1;
3586
3587         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3588                 return -EINVAL;
3589
3590         if (cp->ctx_tbl) {
3591                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3592
3593                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3594                         return -EAGAIN;
3595         }
3596
3597         csk1 = &cp->csk_tbl[l5_cid];
3598         if (atomic_read(&csk1->ref_count))
3599                 return -EAGAIN;
3600
3601         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3602                 return -EBUSY;
3603
3604         csk1->dev = dev;
3605         csk1->cid = cid;
3606         csk1->l5_cid = l5_cid;
3607         csk1->ulp_type = ulp_type;
3608         csk1->context = context;
3609
3610         csk1->ka_timeout = DEF_KA_TIMEOUT;
3611         csk1->ka_interval = DEF_KA_INTERVAL;
3612         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3613         csk1->tos = DEF_TOS;
3614         csk1->ttl = DEF_TTL;
3615         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3616         csk1->rcv_buf = DEF_RCV_BUF;
3617         csk1->snd_buf = DEF_SND_BUF;
3618         csk1->seed = DEF_SEED;
3619         csk1->tcp_flags = 0;
3620
3621         *csk = csk1;
3622         return 0;
3623 }
3624
3625 static void cnic_cm_cleanup(struct cnic_sock *csk)
3626 {
3627         if (csk->src_port) {
3628                 struct cnic_dev *dev = csk->dev;
3629                 struct cnic_local *cp = dev->cnic_priv;
3630
3631                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3632                 csk->src_port = 0;
3633         }
3634 }
3635
3636 static void cnic_close_conn(struct cnic_sock *csk)
3637 {
3638         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3639                 cnic_cm_upload_pg(csk);
3640                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3641         }
3642         cnic_cm_cleanup(csk);
3643 }
3644
3645 static int cnic_cm_destroy(struct cnic_sock *csk)
3646 {
3647         if (!cnic_in_use(csk))
3648                 return -EINVAL;
3649
3650         csk_hold(csk);
3651         clear_bit(SK_F_INUSE, &csk->flags);
3652         smp_mb__after_atomic();
3653         while (atomic_read(&csk->ref_count) != 1)
3654                 msleep(1);
3655         cnic_cm_cleanup(csk);
3656
3657         csk->flags = 0;
3658         csk_put(csk);
3659         return 0;
3660 }
3661
3662 static inline u16 cnic_get_vlan(struct net_device *dev,
3663                                 struct net_device **vlan_dev)
3664 {
3665         if (is_vlan_dev(dev)) {
3666                 *vlan_dev = vlan_dev_real_dev(dev);
3667                 return vlan_dev_vlan_id(dev);
3668         }
3669         *vlan_dev = dev;
3670         return 0;
3671 }
3672
3673 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3674                              struct dst_entry **dst)
3675 {
3676 #if defined(CONFIG_INET)
3677         struct rtable *rt;
3678
3679         rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3680         if (!IS_ERR(rt)) {
3681                 *dst = &rt->dst;
3682                 return 0;
3683         }
3684         return PTR_ERR(rt);
3685 #else
3686         return -ENETUNREACH;
3687 #endif
3688 }
3689
3690 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3691                              struct dst_entry **dst)
3692 {
3693 #if IS_ENABLED(CONFIG_IPV6)
3694         struct flowi6 fl6;
3695
3696         memset(&fl6, 0, sizeof(fl6));
3697         fl6.daddr = dst_addr->sin6_addr;
3698         if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3699                 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3700
3701         *dst = ip6_route_output(&init_net, NULL, &fl6);
3702         if ((*dst)->error) {
3703                 dst_release(*dst);
3704                 *dst = NULL;
3705                 return -ENETUNREACH;
3706         } else
3707                 return 0;
3708 #endif
3709
3710         return -ENETUNREACH;
3711 }
3712
3713 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3714                                            int ulp_type)
3715 {
3716         struct cnic_dev *dev = NULL;
3717         struct dst_entry *dst;
3718         struct net_device *netdev = NULL;
3719         int err = -ENETUNREACH;
3720
3721         if (dst_addr->sin_family == AF_INET)
3722                 err = cnic_get_v4_route(dst_addr, &dst);
3723         else if (dst_addr->sin_family == AF_INET6) {
3724                 struct sockaddr_in6 *dst_addr6 =
3725                         (struct sockaddr_in6 *) dst_addr;
3726
3727                 err = cnic_get_v6_route(dst_addr6, &dst);
3728         } else
3729                 return NULL;
3730
3731         if (err)
3732                 return NULL;
3733
3734         if (!dst->dev)
3735                 goto done;
3736
3737         cnic_get_vlan(dst->dev, &netdev);
3738
3739         dev = cnic_from_netdev(netdev);
3740
3741 done:
3742         dst_release(dst);
3743         if (dev)
3744                 cnic_put(dev);
3745         return dev;
3746 }
3747
3748 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3749 {
3750         struct cnic_dev *dev = csk->dev;
3751         struct cnic_local *cp = dev->cnic_priv;
3752
3753         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3754 }
3755
3756 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3757 {
3758         struct cnic_dev *dev = csk->dev;
3759         struct cnic_local *cp = dev->cnic_priv;
3760         int is_v6, rc = 0;
3761         struct dst_entry *dst = NULL;
3762         struct net_device *realdev;
3763         __be16 local_port;
3764         u32 port_id;
3765
3766         if (saddr->local.v6.sin6_family == AF_INET6 &&
3767             saddr->remote.v6.sin6_family == AF_INET6)
3768                 is_v6 = 1;
3769         else if (saddr->local.v4.sin_family == AF_INET &&
3770                  saddr->remote.v4.sin_family == AF_INET)
3771                 is_v6 = 0;
3772         else
3773                 return -EINVAL;
3774
3775         clear_bit(SK_F_IPV6, &csk->flags);
3776
3777         if (is_v6) {
3778                 set_bit(SK_F_IPV6, &csk->flags);
3779                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3780
3781                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3782                        sizeof(struct in6_addr));
3783                 csk->dst_port = saddr->remote.v6.sin6_port;
3784                 local_port = saddr->local.v6.sin6_port;
3785
3786         } else {
3787                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3788
3789                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3790                 csk->dst_port = saddr->remote.v4.sin_port;
3791                 local_port = saddr->local.v4.sin_port;
3792         }
3793
3794         csk->vlan_id = 0;
3795         csk->mtu = dev->netdev->mtu;
3796         if (dst && dst->dev) {
3797                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3798                 if (realdev == dev->netdev) {
3799                         csk->vlan_id = vlan;
3800                         csk->mtu = dst_mtu(dst);
3801                 }
3802         }
3803
3804         port_id = be16_to_cpu(local_port);
3805         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3806             port_id < CNIC_LOCAL_PORT_MAX) {
3807                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3808                         port_id = 0;
3809         } else
3810                 port_id = 0;
3811
3812         if (!port_id) {
3813                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3814                 if (port_id == -1) {
3815                         rc = -ENOMEM;
3816                         goto err_out;
3817                 }
3818                 local_port = cpu_to_be16(port_id);
3819         }
3820         csk->src_port = local_port;
3821
3822 err_out:
3823         dst_release(dst);
3824         return rc;
3825 }
3826
3827 static void cnic_init_csk_state(struct cnic_sock *csk)
3828 {
3829         csk->state = 0;
3830         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3831         clear_bit(SK_F_CLOSING, &csk->flags);
3832 }
3833
3834 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3835 {
3836         struct cnic_local *cp = csk->dev->cnic_priv;
3837         int err = 0;
3838
3839         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3840                 return -EOPNOTSUPP;
3841
3842         if (!cnic_in_use(csk))
3843                 return -EINVAL;
3844
3845         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3846                 return -EINVAL;
3847
3848         cnic_init_csk_state(csk);
3849
3850         err = cnic_get_route(csk, saddr);
3851         if (err)
3852                 goto err_out;
3853
3854         err = cnic_resolve_addr(csk, saddr);
3855         if (!err)
3856                 return 0;
3857
3858 err_out:
3859         clear_bit(SK_F_CONNECT_START, &csk->flags);
3860         return err;
3861 }
3862
3863 static int cnic_cm_abort(struct cnic_sock *csk)
3864 {
3865         struct cnic_local *cp = csk->dev->cnic_priv;
3866         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3867
3868         if (!cnic_in_use(csk))
3869                 return -EINVAL;
3870
3871         if (cnic_abort_prep(csk))
3872                 return cnic_cm_abort_req(csk);
3873
3874         /* Getting here means that we haven't started connect, or
3875          * connect was not successful, or it has been reset by the target.
3876          */
3877
3878         cp->close_conn(csk, opcode);
3879         if (csk->state != opcode) {
3880                 /* Wait for remote reset sequence to complete */
3881                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3882                         msleep(1);
3883
3884                 return -EALREADY;
3885         }
3886
3887         return 0;
3888 }
3889
3890 static int cnic_cm_close(struct cnic_sock *csk)
3891 {
3892         if (!cnic_in_use(csk))
3893                 return -EINVAL;
3894
3895         if (cnic_close_prep(csk)) {
3896                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3897                 return cnic_cm_close_req(csk);
3898         } else {
3899                 /* Wait for remote reset sequence to complete */
3900                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3901                         msleep(1);
3902
3903                 return -EALREADY;
3904         }
3905         return 0;
3906 }
3907
3908 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3909                            u8 opcode)
3910 {
3911         struct cnic_ulp_ops *ulp_ops;
3912         int ulp_type = csk->ulp_type;
3913
3914         rcu_read_lock();
3915         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3916         if (ulp_ops) {
3917                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3918                         ulp_ops->cm_connect_complete(csk);
3919                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3920                         ulp_ops->cm_close_complete(csk);
3921                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3922                         ulp_ops->cm_remote_abort(csk);
3923                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3924                         ulp_ops->cm_abort_complete(csk);
3925                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3926                         ulp_ops->cm_remote_close(csk);
3927         }
3928         rcu_read_unlock();
3929 }
3930
3931 static int cnic_cm_set_pg(struct cnic_sock *csk)
3932 {
3933         if (cnic_offld_prep(csk)) {
3934                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3935                         cnic_cm_update_pg(csk);
3936                 else
3937                         cnic_cm_offload_pg(csk);
3938         }
3939         return 0;
3940 }
3941
3942 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3943 {
3944         struct cnic_local *cp = dev->cnic_priv;
3945         u32 l5_cid = kcqe->pg_host_opaque;
3946         u8 opcode = kcqe->op_code;
3947         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3948
3949         csk_hold(csk);
3950         if (!cnic_in_use(csk))
3951                 goto done;
3952
3953         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3954                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3955                 goto done;
3956         }
3957         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3958         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3959                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3960                 cnic_cm_upcall(cp, csk,
3961                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3962                 goto done;
3963         }
3964
3965         csk->pg_cid = kcqe->pg_cid;
3966         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3967         cnic_cm_conn_req(csk);
3968
3969 done:
3970         csk_put(csk);
3971 }
3972
3973 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3974 {
3975         struct cnic_local *cp = dev->cnic_priv;
3976         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3977         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3978         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3979
3980         ctx->timestamp = jiffies;
3981         ctx->wait_cond = 1;
3982         wake_up(&ctx->waitq);
3983 }
3984
3985 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3986 {
3987         struct cnic_local *cp = dev->cnic_priv;
3988         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3989         u8 opcode = l4kcqe->op_code;
3990         u32 l5_cid;
3991         struct cnic_sock *csk;
3992
3993         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3994                 cnic_process_fcoe_term_conn(dev, kcqe);
3995                 return;
3996         }
3997         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3998             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3999                 cnic_cm_process_offld_pg(dev, l4kcqe);
4000                 return;
4001         }
4002
4003         l5_cid = l4kcqe->conn_id;
4004         if (opcode & 0x80)
4005                 l5_cid = l4kcqe->cid;
4006         if (l5_cid >= MAX_CM_SK_TBL_SZ)
4007                 return;
4008
4009         csk = &cp->csk_tbl[l5_cid];
4010         csk_hold(csk);
4011
4012         if (!cnic_in_use(csk)) {
4013                 csk_put(csk);
4014                 return;
4015         }
4016
4017         switch (opcode) {
4018         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
4019                 if (l4kcqe->status != 0) {
4020                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4021                         cnic_cm_upcall(cp, csk,
4022                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
4023                 }
4024                 break;
4025         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
4026                 if (l4kcqe->status == 0)
4027                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
4028                 else if (l4kcqe->status ==
4029                          L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4030                         set_bit(SK_F_HW_ERR, &csk->flags);
4031
4032                 smp_mb__before_atomic();
4033                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4034                 cnic_cm_upcall(cp, csk, opcode);
4035                 break;
4036
4037         case L5CM_RAMROD_CMD_ID_CLOSE: {
4038                 struct iscsi_kcqe *l5kcqe = (struct iscsi_kcqe *) kcqe;
4039
4040                 if (l4kcqe->status == 0 && l5kcqe->completion_status == 0)
4041                         break;
4042
4043                 netdev_warn(dev->netdev, "RAMROD CLOSE compl with status 0x%x completion status 0x%x\n",
4044                             l4kcqe->status, l5kcqe->completion_status);
4045                 opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
4046         }
4047                 fallthrough;
4048         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4049         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4050         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4051         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4052         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4053                 if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4054                         set_bit(SK_F_HW_ERR, &csk->flags);
4055
4056                 cp->close_conn(csk, opcode);
4057                 break;
4058
4059         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
4060                 /* after we already sent CLOSE_REQ */
4061                 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
4062                     !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
4063                     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
4064                         cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
4065                 else
4066                         cnic_cm_upcall(cp, csk, opcode);
4067                 break;
4068         }
4069         csk_put(csk);
4070 }
4071
4072 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
4073 {
4074         struct cnic_dev *dev = data;
4075         int i;
4076
4077         for (i = 0; i < num; i++)
4078                 cnic_cm_process_kcqe(dev, kcqe[i]);
4079 }
4080
4081 static struct cnic_ulp_ops cm_ulp_ops = {
4082         .indicate_kcqes         = cnic_cm_indicate_kcqe,
4083 };
4084
4085 static void cnic_cm_free_mem(struct cnic_dev *dev)
4086 {
4087         struct cnic_local *cp = dev->cnic_priv;
4088
4089         kvfree(cp->csk_tbl);
4090         cp->csk_tbl = NULL;
4091         cnic_free_id_tbl(&cp->csk_port_tbl);
4092 }
4093
4094 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
4095 {
4096         struct cnic_local *cp = dev->cnic_priv;
4097         u32 port_id;
4098         int i;
4099
4100         cp->csk_tbl = kvcalloc(MAX_CM_SK_TBL_SZ, sizeof(struct cnic_sock),
4101                                GFP_KERNEL);
4102         if (!cp->csk_tbl)
4103                 return -ENOMEM;
4104
4105         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++)
4106                 atomic_set(&cp->csk_tbl[i].ref_count, 0);
4107
4108         port_id = prandom_u32();
4109         port_id %= CNIC_LOCAL_PORT_RANGE;
4110         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4111                              CNIC_LOCAL_PORT_MIN, port_id)) {
4112                 cnic_cm_free_mem(dev);
4113                 return -ENOMEM;
4114         }
4115         return 0;
4116 }
4117
4118 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
4119 {
4120         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
4121                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
4122                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
4123                 csk->state = opcode;
4124         }
4125
4126         /* 1. If event opcode matches the expected event in csk->state
4127          * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
4128          *    event
4129          * 3. If the expected event is 0, meaning the connection was never
4130          *    never established, we accept the opcode from cm_abort.
4131          */
4132         if (opcode == csk->state || csk->state == 0 ||
4133             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
4134             csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4135                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
4136                         if (csk->state == 0)
4137                                 csk->state = opcode;
4138                         return 1;
4139                 }
4140         }
4141         return 0;
4142 }
4143
4144 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
4145 {
4146         struct cnic_dev *dev = csk->dev;
4147         struct cnic_local *cp = dev->cnic_priv;
4148
4149         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
4150                 cnic_cm_upcall(cp, csk, opcode);
4151                 return;
4152         }
4153
4154         clear_bit(SK_F_CONNECT_START, &csk->flags);
4155         cnic_close_conn(csk);
4156         csk->state = opcode;
4157         cnic_cm_upcall(cp, csk, opcode);
4158 }
4159
4160 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
4161 {
4162 }
4163
4164 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
4165 {
4166         u32 seed;
4167
4168         seed = prandom_u32();
4169         cnic_ctx_wr(dev, 45, 0, seed);
4170         return 0;
4171 }
4172
4173 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
4174 {
4175         struct cnic_dev *dev = csk->dev;
4176         struct cnic_local *cp = dev->cnic_priv;
4177         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
4178         union l5cm_specific_data l5_data;
4179         u32 cmd = 0;
4180         int close_complete = 0;
4181
4182         switch (opcode) {
4183         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4184         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4185         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4186                 if (cnic_ready_to_close(csk, opcode)) {
4187                         if (test_bit(SK_F_HW_ERR, &csk->flags))
4188                                 close_complete = 1;
4189                         else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4190                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
4191                         else
4192                                 close_complete = 1;
4193                 }
4194                 break;
4195         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4196                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
4197                 break;
4198         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4199                 close_complete = 1;
4200                 break;
4201         }
4202         if (cmd) {
4203                 memset(&l5_data, 0, sizeof(l5_data));
4204
4205                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
4206                                     &l5_data);
4207         } else if (close_complete) {
4208                 ctx->timestamp = jiffies;
4209                 cnic_close_conn(csk);
4210                 cnic_cm_upcall(cp, csk, csk->state);
4211         }
4212 }
4213
4214 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
4215 {
4216         struct cnic_local *cp = dev->cnic_priv;
4217
4218         if (!cp->ctx_tbl)
4219                 return;
4220
4221         if (!netif_running(dev->netdev))
4222                 return;
4223
4224         cnic_bnx2x_delete_wait(dev, 0);
4225
4226         cancel_delayed_work(&cp->delete_task);
4227         flush_workqueue(cnic_wq);
4228
4229         if (atomic_read(&cp->iscsi_conn) != 0)
4230                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
4231                             atomic_read(&cp->iscsi_conn));
4232 }
4233
4234 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
4235 {
4236         struct bnx2x *bp = netdev_priv(dev->netdev);
4237         u32 pfid = bp->pfid;
4238         u32 port = BP_PORT(bp);
4239
4240         cnic_init_bnx2x_mac(dev);
4241         cnic_bnx2x_set_tcp_options(dev, 0, 1);
4242
4243         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4244                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4245
4246         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4247                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4248         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4249                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4250                 DEF_MAX_DA_COUNT);
4251
4252         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4253                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4254         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4255                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4256         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4257                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4258         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4259                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4260
4261         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4262                 DEF_MAX_CWND);
4263         return 0;
4264 }
4265
4266 static void cnic_delete_task(struct work_struct *work)
4267 {
4268         struct cnic_local *cp;
4269         struct cnic_dev *dev;
4270         u32 i;
4271         int need_resched = 0;
4272
4273         cp = container_of(work, struct cnic_local, delete_task.work);
4274         dev = cp->dev;
4275
4276         if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4277                 struct drv_ctl_info info;
4278
4279                 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4280
4281                 memset(&info, 0, sizeof(struct drv_ctl_info));
4282                 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4283                 cp->ethdev->drv_ctl(dev->netdev, &info);
4284         }
4285
4286         for (i = 0; i < cp->max_cid_space; i++) {
4287                 struct cnic_context *ctx = &cp->ctx_tbl[i];
4288                 int err;
4289
4290                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4291                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4292                         continue;
4293
4294                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4295                         need_resched = 1;
4296                         continue;
4297                 }
4298
4299                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4300                         continue;
4301
4302                 err = cnic_bnx2x_destroy_ramrod(dev, i);
4303
4304                 cnic_free_bnx2x_conn_resc(dev, i);
4305                 if (!err) {
4306                         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4307                                 atomic_dec(&cp->iscsi_conn);
4308
4309                         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4310                 }
4311         }
4312
4313         if (need_resched)
4314                 queue_delayed_work(cnic_wq, &cp->delete_task,
4315                                    msecs_to_jiffies(10));
4316
4317 }
4318
4319 static int cnic_cm_open(struct cnic_dev *dev)
4320 {
4321         struct cnic_local *cp = dev->cnic_priv;
4322         int err;
4323
4324         err = cnic_cm_alloc_mem(dev);
4325         if (err)
4326                 return err;
4327
4328         err = cp->start_cm(dev);
4329
4330         if (err)
4331                 goto err_out;
4332
4333         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4334
4335         dev->cm_create = cnic_cm_create;
4336         dev->cm_destroy = cnic_cm_destroy;
4337         dev->cm_connect = cnic_cm_connect;
4338         dev->cm_abort = cnic_cm_abort;
4339         dev->cm_close = cnic_cm_close;
4340         dev->cm_select_dev = cnic_cm_select_dev;
4341
4342         cp->ulp_handle[CNIC_ULP_L4] = dev;
4343         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4344         return 0;
4345
4346 err_out:
4347         cnic_cm_free_mem(dev);
4348         return err;
4349 }
4350
4351 static int cnic_cm_shutdown(struct cnic_dev *dev)
4352 {
4353         struct cnic_local *cp = dev->cnic_priv;
4354         int i;
4355
4356         if (!cp->csk_tbl)
4357                 return 0;
4358
4359         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4360                 struct cnic_sock *csk = &cp->csk_tbl[i];
4361
4362                 clear_bit(SK_F_INUSE, &csk->flags);
4363                 cnic_cm_cleanup(csk);
4364         }
4365         cnic_cm_free_mem(dev);
4366
4367         return 0;
4368 }
4369
4370 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4371 {
4372         u32 cid_addr;
4373         int i;
4374
4375         cid_addr = GET_CID_ADDR(cid);
4376
4377         for (i = 0; i < CTX_SIZE; i += 4)
4378                 cnic_ctx_wr(dev, cid_addr, i, 0);
4379 }
4380
4381 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4382 {
4383         struct cnic_local *cp = dev->cnic_priv;
4384         int ret = 0, i;
4385         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4386
4387         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4388                 return 0;
4389
4390         for (i = 0; i < cp->ctx_blks; i++) {
4391                 int j;
4392                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4393                 u32 val;
4394
4395                 memset(cp->ctx_arr[i].ctx, 0, CNIC_PAGE_SIZE);
4396
4397                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4398                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4399                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4400                         (u64) cp->ctx_arr[i].mapping >> 32);
4401                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4402                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4403                 for (j = 0; j < 10; j++) {
4404
4405                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4406                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4407                                 break;
4408                         udelay(5);
4409                 }
4410                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4411                         ret = -EBUSY;
4412                         break;
4413                 }
4414         }
4415         return ret;
4416 }
4417
4418 static void cnic_free_irq(struct cnic_dev *dev)
4419 {
4420         struct cnic_local *cp = dev->cnic_priv;
4421         struct cnic_eth_dev *ethdev = cp->ethdev;
4422
4423         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4424                 cp->disable_int_sync(dev);
4425                 tasklet_kill(&cp->cnic_irq_task);
4426                 free_irq(ethdev->irq_arr[0].vector, dev);
4427         }
4428 }
4429
4430 static int cnic_request_irq(struct cnic_dev *dev)
4431 {
4432         struct cnic_local *cp = dev->cnic_priv;
4433         struct cnic_eth_dev *ethdev = cp->ethdev;
4434         int err;
4435
4436         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4437         if (err)
4438                 tasklet_disable(&cp->cnic_irq_task);
4439
4440         return err;
4441 }
4442
4443 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4444 {
4445         struct cnic_local *cp = dev->cnic_priv;
4446         struct cnic_eth_dev *ethdev = cp->ethdev;
4447
4448         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4449                 int err, i = 0;
4450                 int sblk_num = cp->status_blk_num;
4451                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4452                            BNX2_HC_SB_CONFIG_1;
4453
4454                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4455
4456                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4457                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4458                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4459
4460                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4461                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4462                              (unsigned long) dev);
4463                 err = cnic_request_irq(dev);
4464                 if (err)
4465                         return err;
4466
4467                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4468                        i < 10) {
4469                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4470                                 1 << (11 + sblk_num));
4471                         udelay(10);
4472                         i++;
4473                         barrier();
4474                 }
4475                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4476                         cnic_free_irq(dev);
4477                         goto failed;
4478                 }
4479
4480         } else {
4481                 struct status_block *sblk = cp->status_blk.gen;
4482                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4483                 int i = 0;
4484
4485                 while (sblk->status_completion_producer_index && i < 10) {
4486                         CNIC_WR(dev, BNX2_HC_COMMAND,
4487                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4488                         udelay(10);
4489                         i++;
4490                         barrier();
4491                 }
4492                 if (sblk->status_completion_producer_index)
4493                         goto failed;
4494
4495         }
4496         return 0;
4497
4498 failed:
4499         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4500         return -EBUSY;
4501 }
4502
4503 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4504 {
4505         struct cnic_local *cp = dev->cnic_priv;
4506         struct cnic_eth_dev *ethdev = cp->ethdev;
4507
4508         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4509                 return;
4510
4511         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4512                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4513 }
4514
4515 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4516 {
4517         struct cnic_local *cp = dev->cnic_priv;
4518         struct cnic_eth_dev *ethdev = cp->ethdev;
4519
4520         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4521                 return;
4522
4523         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4524                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4525         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4526         synchronize_irq(ethdev->irq_arr[0].vector);
4527 }
4528
4529 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4530 {
4531         struct cnic_local *cp = dev->cnic_priv;
4532         struct cnic_eth_dev *ethdev = cp->ethdev;
4533         struct cnic_uio_dev *udev = cp->udev;
4534         u32 cid_addr, tx_cid, sb_id;
4535         u32 val, offset0, offset1, offset2, offset3;
4536         int i;
4537         struct bnx2_tx_bd *txbd;
4538         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4539         struct status_block *s_blk = cp->status_blk.gen;
4540
4541         sb_id = cp->status_blk_num;
4542         tx_cid = 20;
4543         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4544         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4545                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4546
4547                 tx_cid = TX_TSS_CID + sb_id - 1;
4548                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4549                         (TX_TSS_CID << 7));
4550                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4551         }
4552         cp->tx_cons = *cp->tx_cons_ptr;
4553
4554         cid_addr = GET_CID_ADDR(tx_cid);
4555         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
4556                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4557
4558                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4559                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4560
4561                 offset0 = BNX2_L2CTX_TYPE_XI;
4562                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4563                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4564                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4565         } else {
4566                 cnic_init_context(dev, tx_cid);
4567                 cnic_init_context(dev, tx_cid + 1);
4568
4569                 offset0 = BNX2_L2CTX_TYPE;
4570                 offset1 = BNX2_L2CTX_CMD_TYPE;
4571                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4572                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4573         }
4574         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4575         cnic_ctx_wr(dev, cid_addr, offset0, val);
4576
4577         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4578         cnic_ctx_wr(dev, cid_addr, offset1, val);
4579
4580         txbd = udev->l2_ring;
4581
4582         buf_map = udev->l2_buf_map;
4583         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i++, txbd++) {
4584                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4585                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4586         }
4587         val = (u64) ring_map >> 32;
4588         cnic_ctx_wr(dev, cid_addr, offset2, val);
4589         txbd->tx_bd_haddr_hi = val;
4590
4591         val = (u64) ring_map & 0xffffffff;
4592         cnic_ctx_wr(dev, cid_addr, offset3, val);
4593         txbd->tx_bd_haddr_lo = val;
4594 }
4595
4596 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4597 {
4598         struct cnic_local *cp = dev->cnic_priv;
4599         struct cnic_eth_dev *ethdev = cp->ethdev;
4600         struct cnic_uio_dev *udev = cp->udev;
4601         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4602         int i;
4603         struct bnx2_rx_bd *rxbd;
4604         struct status_block *s_blk = cp->status_blk.gen;
4605         dma_addr_t ring_map = udev->l2_ring_map;
4606
4607         sb_id = cp->status_blk_num;
4608         cnic_init_context(dev, 2);
4609         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4610         coal_reg = BNX2_HC_COMMAND;
4611         coal_val = CNIC_RD(dev, coal_reg);
4612         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4613                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4614
4615                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4616                 coal_reg = BNX2_HC_COALESCE_NOW;
4617                 coal_val = 1 << (11 + sb_id);
4618         }
4619         i = 0;
4620         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4621                 CNIC_WR(dev, coal_reg, coal_val);
4622                 udelay(10);
4623                 i++;
4624                 barrier();
4625         }
4626         cp->rx_cons = *cp->rx_cons_ptr;
4627
4628         cid_addr = GET_CID_ADDR(2);
4629         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4630               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4631         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4632
4633         if (sb_id == 0)
4634                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4635         else
4636                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4637         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4638
4639         rxbd = udev->l2_ring + CNIC_PAGE_SIZE;
4640         for (i = 0; i < BNX2_MAX_RX_DESC_CNT; i++, rxbd++) {
4641                 dma_addr_t buf_map;
4642                 int n = (i % cp->l2_rx_ring_size) + 1;
4643
4644                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4645                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4646                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4647                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4648                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4649         }
4650         val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
4651         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4652         rxbd->rx_bd_haddr_hi = val;
4653
4654         val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
4655         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4656         rxbd->rx_bd_haddr_lo = val;
4657
4658         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4659         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4660 }
4661
4662 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4663 {
4664         struct kwqe *wqes[1], l2kwqe;
4665
4666         memset(&l2kwqe, 0, sizeof(l2kwqe));
4667         wqes[0] = &l2kwqe;
4668         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4669                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4670                                KWQE_OPCODE_SHIFT) | 2;
4671         dev->submit_kwqes(dev, wqes, 1);
4672 }
4673
4674 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4675 {
4676         struct cnic_local *cp = dev->cnic_priv;
4677         u32 val;
4678
4679         val = cp->func << 2;
4680
4681         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4682
4683         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4684                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4685         dev->mac_addr[0] = (u8) (val >> 8);
4686         dev->mac_addr[1] = (u8) val;
4687
4688         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4689
4690         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4691                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4692         dev->mac_addr[2] = (u8) (val >> 24);
4693         dev->mac_addr[3] = (u8) (val >> 16);
4694         dev->mac_addr[4] = (u8) (val >> 8);
4695         dev->mac_addr[5] = (u8) val;
4696
4697         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4698
4699         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4700         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4701                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4702
4703         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4704         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4705         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4706 }
4707
4708 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4709 {
4710         struct cnic_local *cp = dev->cnic_priv;
4711         struct cnic_eth_dev *ethdev = cp->ethdev;
4712         struct status_block *sblk = cp->status_blk.gen;
4713         u32 val, kcq_cid_addr, kwq_cid_addr;
4714         int err;
4715
4716         cnic_set_bnx2_mac(dev);
4717
4718         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4719         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4720         if (CNIC_PAGE_BITS > 12)
4721                 val |= (12 - 8)  << 4;
4722         else
4723                 val |= (CNIC_PAGE_BITS - 8)  << 4;
4724
4725         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4726
4727         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4728         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4729         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4730
4731         err = cnic_setup_5709_context(dev, 1);
4732         if (err)
4733                 return err;
4734
4735         cnic_init_context(dev, KWQ_CID);
4736         cnic_init_context(dev, KCQ_CID);
4737
4738         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4739         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4740
4741         cp->max_kwq_idx = MAX_KWQ_IDX;
4742         cp->kwq_prod_idx = 0;
4743         cp->kwq_con_idx = 0;
4744         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4745
4746         if (BNX2_CHIP(cp) == BNX2_CHIP_5706 || BNX2_CHIP(cp) == BNX2_CHIP_5708)
4747                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4748         else
4749                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4750
4751         /* Initialize the kernel work queue context. */
4752         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4753               (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4754         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4755
4756         val = (CNIC_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4757         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4758
4759         val = ((CNIC_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4760         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4761
4762         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4763         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4764
4765         val = (u32) cp->kwq_info.pgtbl_map;
4766         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4767
4768         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4769         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4770
4771         cp->kcq1.sw_prod_idx = 0;
4772         cp->kcq1.hw_prod_idx_ptr =
4773                 &sblk->status_completion_producer_index;
4774
4775         cp->kcq1.status_idx_ptr = &sblk->status_idx;
4776
4777         /* Initialize the kernel complete queue context. */
4778         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4779               (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4780         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4781
4782         val = (CNIC_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4783         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4784
4785         val = ((CNIC_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4786         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4787
4788         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4789         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4790
4791         val = (u32) cp->kcq1.dma.pgtbl_map;
4792         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4793
4794         cp->int_num = 0;
4795         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4796                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4797                 u32 sb_id = cp->status_blk_num;
4798                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4799
4800                 cp->kcq1.hw_prod_idx_ptr =
4801                         &msblk->status_completion_producer_index;
4802                 cp->kcq1.status_idx_ptr = &msblk->status_idx;
4803                 cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
4804                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4805                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4806                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4807         }
4808
4809         /* Enable Commnad Scheduler notification when we write to the
4810          * host producer index of the kernel contexts. */
4811         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4812
4813         /* Enable Command Scheduler notification when we write to either
4814          * the Send Queue or Receive Queue producer indexes of the kernel
4815          * bypass contexts. */
4816         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4817         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4818
4819         /* Notify COM when the driver post an application buffer. */
4820         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4821
4822         /* Set the CP and COM doorbells.  These two processors polls the
4823          * doorbell for a non zero value before running.  This must be done
4824          * after setting up the kernel queue contexts. */
4825         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4826         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4827
4828         cnic_init_bnx2_tx_ring(dev);
4829         cnic_init_bnx2_rx_ring(dev);
4830
4831         err = cnic_init_bnx2_irq(dev);
4832         if (err) {
4833                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4834                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4835                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4836                 return err;
4837         }
4838
4839         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
4840
4841         return 0;
4842 }
4843
4844 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4845 {
4846         struct cnic_local *cp = dev->cnic_priv;
4847         struct cnic_eth_dev *ethdev = cp->ethdev;
4848         u32 start_offset = ethdev->ctx_tbl_offset;
4849         int i;
4850
4851         for (i = 0; i < cp->ctx_blks; i++) {
4852                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4853                 dma_addr_t map = ctx->mapping;
4854
4855                 if (cp->ctx_align) {
4856                         unsigned long mask = cp->ctx_align - 1;
4857
4858                         map = (map + mask) & ~mask;
4859                 }
4860
4861                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4862         }
4863 }
4864
4865 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4866 {
4867         struct cnic_local *cp = dev->cnic_priv;
4868         struct cnic_eth_dev *ethdev = cp->ethdev;
4869         int err = 0;
4870
4871         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4872                      (unsigned long) dev);
4873         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4874                 err = cnic_request_irq(dev);
4875
4876         return err;
4877 }
4878
4879 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4880                                                 u16 sb_id, u8 sb_index,
4881                                                 u8 disable)
4882 {
4883         struct bnx2x *bp = netdev_priv(dev->netdev);
4884
4885         u32 addr = BAR_CSTRORM_INTMEM +
4886                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4887                         offsetof(struct hc_status_block_data_e1x, index_data) +
4888                         sizeof(struct hc_index_data)*sb_index +
4889                         offsetof(struct hc_index_data, flags);
4890         u16 flags = CNIC_RD16(dev, addr);
4891         /* clear and set */
4892         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4893         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4894                   HC_INDEX_DATA_HC_ENABLED);
4895         CNIC_WR16(dev, addr, flags);
4896 }
4897
4898 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4899 {
4900         struct cnic_local *cp = dev->cnic_priv;
4901         struct bnx2x *bp = netdev_priv(dev->netdev);
4902         u8 sb_id = cp->status_blk_num;
4903
4904         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4905                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4906                         offsetof(struct hc_status_block_data_e1x, index_data) +
4907                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4908                         offsetof(struct hc_index_data, timeout), 64 / 4);
4909         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4910 }
4911
4912 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4913 {
4914 }
4915
4916 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4917                                     struct client_init_ramrod_data *data)
4918 {
4919         struct cnic_local *cp = dev->cnic_priv;
4920         struct bnx2x *bp = netdev_priv(dev->netdev);
4921         struct cnic_uio_dev *udev = cp->udev;
4922         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4923         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4924         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4925         int i;
4926         u32 cli = cp->ethdev->iscsi_l2_client_id;
4927         u32 val;
4928
4929         memset(txbd, 0, CNIC_PAGE_SIZE);
4930
4931         buf_map = udev->l2_buf_map;
4932         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4933                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4934                 struct eth_tx_parse_bd_e1x *pbd_e1x =
4935                         &((txbd + 1)->parse_bd_e1x);
4936                 struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2);
4937                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4938
4939                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4940                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4941                 reg_bd->addr_hi = start_bd->addr_hi;
4942                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4943                 start_bd->nbytes = cpu_to_le16(0x10);
4944                 start_bd->nbd = cpu_to_le16(3);
4945                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4946                 start_bd->general_data &= ~ETH_TX_START_BD_PARSE_NBDS;
4947                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4948
4949                 if (BNX2X_CHIP_IS_E2_PLUS(bp))
4950                         pbd_e2->parsing_data = (UNICAST_ADDRESS <<
4951                                 ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT);
4952                 else
4953                         pbd_e1x->global_data = (UNICAST_ADDRESS <<
4954                                 ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT);
4955         }
4956
4957         val = (u64) ring_map >> 32;
4958         txbd->next_bd.addr_hi = cpu_to_le32(val);
4959
4960         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4961
4962         val = (u64) ring_map & 0xffffffff;
4963         txbd->next_bd.addr_lo = cpu_to_le32(val);
4964
4965         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4966
4967         /* Other ramrod params */
4968         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4969         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4970
4971         /* reset xstorm per client statistics */
4972         if (cli < MAX_STAT_COUNTER_ID) {
4973                 data->general.statistics_zero_flg = 1;
4974                 data->general.statistics_en_flg = 1;
4975                 data->general.statistics_counter_id = cli;
4976         }
4977
4978         cp->tx_cons_ptr =
4979                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4980 }
4981
4982 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4983                                     struct client_init_ramrod_data *data)
4984 {
4985         struct cnic_local *cp = dev->cnic_priv;
4986         struct bnx2x *bp = netdev_priv(dev->netdev);
4987         struct cnic_uio_dev *udev = cp->udev;
4988         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4989                                 CNIC_PAGE_SIZE);
4990         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4991                                 (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
4992         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4993         int i;
4994         u32 cli = cp->ethdev->iscsi_l2_client_id;
4995         int cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
4996         u32 val;
4997         dma_addr_t ring_map = udev->l2_ring_map;
4998
4999         /* General data */
5000         data->general.client_id = cli;
5001         data->general.activate_flg = 1;
5002         data->general.sp_client_id = cli;
5003         data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
5004         data->general.func_id = bp->pfid;
5005
5006         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
5007                 dma_addr_t buf_map;
5008                 int n = (i % cp->l2_rx_ring_size) + 1;
5009
5010                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
5011                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
5012                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
5013         }
5014
5015         val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
5016         rxbd->addr_hi = cpu_to_le32(val);
5017         data->rx.bd_page_base.hi = cpu_to_le32(val);
5018
5019         val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
5020         rxbd->addr_lo = cpu_to_le32(val);
5021         data->rx.bd_page_base.lo = cpu_to_le32(val);
5022
5023         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
5024         val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) >> 32;
5025         rxcqe->addr_hi = cpu_to_le32(val);
5026         data->rx.cqe_page_base.hi = cpu_to_le32(val);
5027
5028         val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) & 0xffffffff;
5029         rxcqe->addr_lo = cpu_to_le32(val);
5030         data->rx.cqe_page_base.lo = cpu_to_le32(val);
5031
5032         /* Other ramrod params */
5033         data->rx.client_qzone_id = cl_qzone_id;
5034         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
5035         data->rx.status_block_id = BNX2X_DEF_SB_ID;
5036
5037         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
5038
5039         data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
5040         data->rx.outer_vlan_removal_enable_flg = 1;
5041         data->rx.silent_vlan_removal_flg = 1;
5042         data->rx.silent_vlan_value = 0;
5043         data->rx.silent_vlan_mask = 0xffff;
5044
5045         cp->rx_cons_ptr =
5046                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
5047         cp->rx_cons = *cp->rx_cons_ptr;
5048 }
5049
5050 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
5051 {
5052         struct cnic_local *cp = dev->cnic_priv;
5053         struct bnx2x *bp = netdev_priv(dev->netdev);
5054         u32 pfid = bp->pfid;
5055
5056         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
5057                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
5058         cp->kcq1.sw_prod_idx = 0;
5059
5060         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5061                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5062
5063                 cp->kcq1.hw_prod_idx_ptr =
5064                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5065                 cp->kcq1.status_idx_ptr =
5066                         &sb->sb.running_index[SM_RX_ID];
5067         } else {
5068                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
5069
5070                 cp->kcq1.hw_prod_idx_ptr =
5071                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5072                 cp->kcq1.status_idx_ptr =
5073                         &sb->sb.running_index[SM_RX_ID];
5074         }
5075
5076         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5077                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5078
5079                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
5080                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
5081                 cp->kcq2.sw_prod_idx = 0;
5082                 cp->kcq2.hw_prod_idx_ptr =
5083                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
5084                 cp->kcq2.status_idx_ptr =
5085                         &sb->sb.running_index[SM_RX_ID];
5086         }
5087 }
5088
5089 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
5090 {
5091         struct cnic_local *cp = dev->cnic_priv;
5092         struct bnx2x *bp = netdev_priv(dev->netdev);
5093         struct cnic_eth_dev *ethdev = cp->ethdev;
5094         int ret;
5095         u32 pfid;
5096
5097         dev->stats_addr = ethdev->addr_drv_info_to_mcp;
5098         cp->func = bp->pf_num;
5099
5100         pfid = bp->pfid;
5101
5102         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5103                                cp->iscsi_start_cid, 0);
5104
5105         if (ret)
5106                 return -ENOMEM;
5107
5108         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5109                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5110                                         cp->fcoe_start_cid, 0);
5111
5112                 if (ret)
5113                         return -ENOMEM;
5114         }
5115
5116         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
5117
5118         cnic_init_bnx2x_kcq(dev);
5119
5120         /* Only 1 EQ */
5121         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5122         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5123                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5124         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5125                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5126                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5127         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5128                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5129                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5130         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5131                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5132                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5133         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5134                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5135                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5136         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5137                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5138         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5139                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5140         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5141                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5142                 HC_INDEX_ISCSI_EQ_CONS);
5143
5144         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5145                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5146                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
5147         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5148                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5149                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
5150
5151         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
5152                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
5153
5154         cnic_setup_bnx2x_context(dev);
5155
5156         ret = cnic_init_bnx2x_irq(dev);
5157         if (ret)
5158                 return ret;
5159
5160         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
5161         return 0;
5162 }
5163
5164 static void cnic_init_rings(struct cnic_dev *dev)
5165 {
5166         struct cnic_local *cp = dev->cnic_priv;
5167         struct bnx2x *bp = netdev_priv(dev->netdev);
5168         struct cnic_uio_dev *udev = cp->udev;
5169
5170         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5171                 return;
5172
5173         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5174                 cnic_init_bnx2_tx_ring(dev);
5175                 cnic_init_bnx2_rx_ring(dev);
5176                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5177         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5178                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5179                 u32 cid = cp->ethdev->iscsi_l2_cid;
5180                 u32 cl_qzone_id;
5181                 struct client_init_ramrod_data *data;
5182                 union l5cm_specific_data l5_data;
5183                 struct ustorm_eth_rx_producers rx_prods = {0};
5184                 u32 off, i, *cid_ptr;
5185
5186                 rx_prods.bd_prod = 0;
5187                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
5188                 barrier();
5189
5190                 cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
5191
5192                 off = BAR_USTRORM_INTMEM +
5193                         (BNX2X_CHIP_IS_E2_PLUS(bp) ?
5194                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
5195                          USTORM_RX_PRODS_E1X_OFFSET(BP_PORT(bp), cli));
5196
5197                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5198                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5199
5200                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5201
5202                 data = udev->l2_buf;
5203                 cid_ptr = udev->l2_buf + 12;
5204
5205                 memset(data, 0, sizeof(*data));
5206
5207                 cnic_init_bnx2x_tx_ring(dev, data);
5208                 cnic_init_bnx2x_rx_ring(dev, data);
5209
5210                 data->general.fp_hsi_ver =  ETH_FP_HSI_VERSION;
5211
5212                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5213                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5214
5215                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5216
5217                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5218                         cid, ETH_CONNECTION_TYPE, &l5_data);
5219
5220                 i = 0;
5221                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5222                        ++i < 10)
5223                         msleep(1);
5224
5225                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5226                         netdev_err(dev->netdev,
5227                                 "iSCSI CLIENT_SETUP did not complete\n");
5228                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5229                 cnic_ring_ctl(dev, cid, cli, 1);
5230                 *cid_ptr = cid >> 4;
5231                 *(cid_ptr + 1) = cid * bp->db_size;
5232                 *(cid_ptr + 2) = UIO_USE_TX_DOORBELL;
5233         }
5234 }
5235
5236 static void cnic_shutdown_rings(struct cnic_dev *dev)
5237 {
5238         struct cnic_local *cp = dev->cnic_priv;
5239         struct cnic_uio_dev *udev = cp->udev;
5240         void *rx_ring;
5241
5242         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5243                 return;
5244
5245         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5246                 cnic_shutdown_bnx2_rx_ring(dev);
5247         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5248                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5249                 u32 cid = cp->ethdev->iscsi_l2_cid;
5250                 union l5cm_specific_data l5_data;
5251                 int i;
5252
5253                 cnic_ring_ctl(dev, cid, cli, 0);
5254
5255                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5256
5257                 l5_data.phy_address.lo = cli;
5258                 l5_data.phy_address.hi = 0;
5259                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5260                         cid, ETH_CONNECTION_TYPE, &l5_data);
5261                 i = 0;
5262                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5263                        ++i < 10)
5264                         msleep(1);
5265
5266                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5267                         netdev_err(dev->netdev,
5268                                 "iSCSI CLIENT_HALT did not complete\n");
5269                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5270
5271                 memset(&l5_data, 0, sizeof(l5_data));
5272                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5273                         cid, NONE_CONNECTION_TYPE, &l5_data);
5274                 msleep(10);
5275         }
5276         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5277         rx_ring = udev->l2_ring + CNIC_PAGE_SIZE;
5278         memset(rx_ring, 0, CNIC_PAGE_SIZE);
5279 }
5280
5281 static int cnic_register_netdev(struct cnic_dev *dev)
5282 {
5283         struct cnic_local *cp = dev->cnic_priv;
5284         struct cnic_eth_dev *ethdev = cp->ethdev;
5285         int err;
5286
5287         if (!ethdev)
5288                 return -ENODEV;
5289
5290         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5291                 return 0;
5292
5293         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5294         if (err)
5295                 netdev_err(dev->netdev, "register_cnic failed\n");
5296
5297         /* Read iSCSI config again.  On some bnx2x device, iSCSI config
5298          * can change after firmware is downloaded.
5299          */
5300         dev->max_iscsi_conn = ethdev->max_iscsi_conn;
5301         if (ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
5302                 dev->max_iscsi_conn = 0;
5303
5304         return err;
5305 }
5306
5307 static void cnic_unregister_netdev(struct cnic_dev *dev)
5308 {
5309         struct cnic_local *cp = dev->cnic_priv;
5310         struct cnic_eth_dev *ethdev = cp->ethdev;
5311
5312         if (!ethdev)
5313                 return;
5314
5315         ethdev->drv_unregister_cnic(dev->netdev);
5316 }
5317
5318 static int cnic_start_hw(struct cnic_dev *dev)
5319 {
5320         struct cnic_local *cp = dev->cnic_priv;
5321         struct cnic_eth_dev *ethdev = cp->ethdev;
5322         int err;
5323
5324         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5325                 return -EALREADY;
5326
5327         dev->regview = ethdev->io_base;
5328         pci_dev_get(dev->pcidev);
5329         cp->func = PCI_FUNC(dev->pcidev->devfn);
5330         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5331         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5332
5333         err = cp->alloc_resc(dev);
5334         if (err) {
5335                 netdev_err(dev->netdev, "allocate resource failure\n");
5336                 goto err1;
5337         }
5338
5339         err = cp->start_hw(dev);
5340         if (err)
5341                 goto err1;
5342
5343         err = cnic_cm_open(dev);
5344         if (err)
5345                 goto err1;
5346
5347         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5348
5349         cp->enable_int(dev);
5350
5351         return 0;
5352
5353 err1:
5354         if (ethdev->drv_state & CNIC_DRV_STATE_HANDLES_IRQ)
5355                 cp->stop_hw(dev);
5356         else
5357                 cp->free_resc(dev);
5358         pci_dev_put(dev->pcidev);
5359         return err;
5360 }
5361
5362 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5363 {
5364         cnic_disable_bnx2_int_sync(dev);
5365
5366         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5367         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5368
5369         cnic_init_context(dev, KWQ_CID);
5370         cnic_init_context(dev, KCQ_CID);
5371
5372         cnic_setup_5709_context(dev, 0);
5373         cnic_free_irq(dev);
5374
5375         cnic_free_resc(dev);
5376 }
5377
5378
5379 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5380 {
5381         struct cnic_local *cp = dev->cnic_priv;
5382         struct bnx2x *bp = netdev_priv(dev->netdev);
5383         u32 hc_index = HC_INDEX_ISCSI_EQ_CONS;
5384         u32 sb_id = cp->status_blk_num;
5385         u32 idx_off, syn_off;
5386
5387         cnic_free_irq(dev);
5388
5389         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5390                 idx_off = offsetof(struct hc_status_block_e2, index_values) +
5391                           (hc_index * sizeof(u16));
5392
5393                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E2_OFFSET(hc_index, sb_id);
5394         } else {
5395                 idx_off = offsetof(struct hc_status_block_e1x, index_values) +
5396                           (hc_index * sizeof(u16));
5397
5398                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E1X_OFFSET(hc_index, sb_id);
5399         }
5400         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + syn_off, 0);
5401         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_OFFSET(sb_id) +
5402                   idx_off, 0);
5403
5404         *cp->kcq1.hw_prod_idx_ptr = 0;
5405         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5406                 CSTORM_ISCSI_EQ_CONS_OFFSET(bp->pfid, 0), 0);
5407         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5408         cnic_free_resc(dev);
5409 }
5410
5411 static void cnic_stop_hw(struct cnic_dev *dev)
5412 {
5413         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5414                 struct cnic_local *cp = dev->cnic_priv;
5415                 int i = 0;
5416
5417                 /* Need to wait for the ring shutdown event to complete
5418                  * before clearing the CNIC_UP flag.
5419                  */
5420                 while (cp->udev && cp->udev->uio_dev != -1 && i < 15) {
5421                         msleep(100);
5422                         i++;
5423                 }
5424                 cnic_shutdown_rings(dev);
5425                 cp->stop_cm(dev);
5426                 cp->ethdev->drv_state &= ~CNIC_DRV_STATE_HANDLES_IRQ;
5427                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5428                 RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5429                 synchronize_rcu();
5430                 cnic_cm_shutdown(dev);
5431                 cp->stop_hw(dev);
5432                 pci_dev_put(dev->pcidev);
5433         }
5434 }
5435
5436 static void cnic_free_dev(struct cnic_dev *dev)
5437 {
5438         int i = 0;
5439
5440         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5441                 msleep(100);
5442                 i++;
5443         }
5444         if (atomic_read(&dev->ref_count) != 0)
5445                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5446
5447         netdev_info(dev->netdev, "Removed CNIC device\n");
5448         dev_put(dev->netdev);
5449         kfree(dev);
5450 }
5451
5452 static int cnic_get_fc_npiv_tbl(struct cnic_dev *dev,
5453                                 struct cnic_fc_npiv_tbl *npiv_tbl)
5454 {
5455         struct cnic_local *cp = dev->cnic_priv;
5456         struct bnx2x *bp = netdev_priv(dev->netdev);
5457         int ret;
5458
5459         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
5460                 return -EAGAIN;     /* bnx2x is down */
5461
5462         if (!BNX2X_CHIP_IS_E2_PLUS(bp))
5463                 return -EINVAL;
5464
5465         ret = cp->ethdev->drv_get_fc_npiv_tbl(dev->netdev, npiv_tbl);
5466         return ret;
5467 }
5468
5469 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5470                                        struct pci_dev *pdev)
5471 {
5472         struct cnic_dev *cdev;
5473         struct cnic_local *cp;
5474         int alloc_size;
5475
5476         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5477
5478         cdev = kzalloc(alloc_size, GFP_KERNEL);
5479         if (cdev == NULL)
5480                 return NULL;
5481
5482         cdev->netdev = dev;
5483         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5484         cdev->register_device = cnic_register_device;
5485         cdev->unregister_device = cnic_unregister_device;
5486         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5487         cdev->get_fc_npiv_tbl = cnic_get_fc_npiv_tbl;
5488         atomic_set(&cdev->ref_count, 0);
5489
5490         cp = cdev->cnic_priv;
5491         cp->dev = cdev;
5492         cp->l2_single_buf_size = 0x400;
5493         cp->l2_rx_ring_size = 3;
5494
5495         spin_lock_init(&cp->cnic_ulp_lock);
5496
5497         netdev_info(dev, "Added CNIC device\n");
5498
5499         return cdev;
5500 }
5501
5502 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5503 {
5504         struct pci_dev *pdev;
5505         struct cnic_dev *cdev;
5506         struct cnic_local *cp;
5507         struct bnx2 *bp = netdev_priv(dev);
5508         struct cnic_eth_dev *ethdev = NULL;
5509
5510         if (bp->cnic_probe)
5511                 ethdev = (bp->cnic_probe)(dev);
5512
5513         if (!ethdev)
5514                 return NULL;
5515
5516         pdev = ethdev->pdev;
5517         if (!pdev)
5518                 return NULL;
5519
5520         dev_hold(dev);
5521         pci_dev_get(pdev);
5522         if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5523              pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5524             (pdev->revision < 0x10)) {
5525                 pci_dev_put(pdev);
5526                 goto cnic_err;
5527         }
5528         pci_dev_put(pdev);
5529
5530         cdev = cnic_alloc_dev(dev, pdev);
5531         if (cdev == NULL)
5532                 goto cnic_err;
5533
5534         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5535         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5536
5537         cp = cdev->cnic_priv;
5538         cp->ethdev = ethdev;
5539         cdev->pcidev = pdev;
5540         cp->chip_id = ethdev->chip_id;
5541
5542         cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5543
5544         cp->cnic_ops = &cnic_bnx2_ops;
5545         cp->start_hw = cnic_start_bnx2_hw;
5546         cp->stop_hw = cnic_stop_bnx2_hw;
5547         cp->setup_pgtbl = cnic_setup_page_tbl;
5548         cp->alloc_resc = cnic_alloc_bnx2_resc;
5549         cp->free_resc = cnic_free_resc;
5550         cp->start_cm = cnic_cm_init_bnx2_hw;
5551         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5552         cp->enable_int = cnic_enable_bnx2_int;
5553         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5554         cp->close_conn = cnic_close_bnx2_conn;
5555         return cdev;
5556
5557 cnic_err:
5558         dev_put(dev);
5559         return NULL;
5560 }
5561
5562 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5563 {
5564         struct pci_dev *pdev;
5565         struct cnic_dev *cdev;
5566         struct cnic_local *cp;
5567         struct bnx2x *bp = netdev_priv(dev);
5568         struct cnic_eth_dev *ethdev = NULL;
5569
5570         if (bp->cnic_probe)
5571                 ethdev = bp->cnic_probe(dev);
5572
5573         if (!ethdev)
5574                 return NULL;
5575
5576         pdev = ethdev->pdev;
5577         if (!pdev)
5578                 return NULL;
5579
5580         dev_hold(dev);
5581         cdev = cnic_alloc_dev(dev, pdev);
5582         if (cdev == NULL) {
5583                 dev_put(dev);
5584                 return NULL;
5585         }
5586
5587         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5588         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5589
5590         cp = cdev->cnic_priv;
5591         cp->ethdev = ethdev;
5592         cdev->pcidev = pdev;
5593         cp->chip_id = ethdev->chip_id;
5594
5595         cdev->stats_addr = ethdev->addr_drv_info_to_mcp;
5596
5597         if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5598                 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5599         if (CNIC_SUPPORTS_FCOE(bp)) {
5600                 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5601                 cdev->max_fcoe_exchanges = ethdev->max_fcoe_exchanges;
5602         }
5603
5604         if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
5605                 cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
5606
5607         memcpy(cdev->mac_addr, ethdev->iscsi_mac, ETH_ALEN);
5608
5609         cp->cnic_ops = &cnic_bnx2x_ops;
5610         cp->start_hw = cnic_start_bnx2x_hw;
5611         cp->stop_hw = cnic_stop_bnx2x_hw;
5612         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5613         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5614         cp->free_resc = cnic_free_resc;
5615         cp->start_cm = cnic_cm_init_bnx2x_hw;
5616         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5617         cp->enable_int = cnic_enable_bnx2x_int;
5618         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5619         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5620                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5621                 cp->arm_int = cnic_arm_bnx2x_e2_msix;
5622         } else {
5623                 cp->ack_int = cnic_ack_bnx2x_msix;
5624                 cp->arm_int = cnic_arm_bnx2x_msix;
5625         }
5626         cp->close_conn = cnic_close_bnx2x_conn;
5627         return cdev;
5628 }
5629
5630 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5631 {
5632         struct ethtool_drvinfo drvinfo;
5633         struct cnic_dev *cdev = NULL;
5634
5635         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5636                 memset(&drvinfo, 0, sizeof(drvinfo));
5637                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5638
5639                 if (!strcmp(drvinfo.driver, "bnx2"))
5640                         cdev = init_bnx2_cnic(dev);
5641                 if (!strcmp(drvinfo.driver, "bnx2x"))
5642                         cdev = init_bnx2x_cnic(dev);
5643                 if (cdev) {
5644                         write_lock(&cnic_dev_lock);
5645                         list_add(&cdev->list, &cnic_dev_list);
5646                         write_unlock(&cnic_dev_lock);
5647                 }
5648         }
5649         return cdev;
5650 }
5651
5652 static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
5653                               u16 vlan_id)
5654 {
5655         int if_type;
5656
5657         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5658                 struct cnic_ulp_ops *ulp_ops;
5659                 void *ctx;
5660
5661                 mutex_lock(&cnic_lock);
5662                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
5663                                                 lockdep_is_held(&cnic_lock));
5664                 if (!ulp_ops || !ulp_ops->indicate_netevent) {
5665                         mutex_unlock(&cnic_lock);
5666                         continue;
5667                 }
5668
5669                 ctx = cp->ulp_handle[if_type];
5670
5671                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
5672                 mutex_unlock(&cnic_lock);
5673
5674                 ulp_ops->indicate_netevent(ctx, event, vlan_id);
5675
5676                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
5677         }
5678 }
5679
5680 /* netdev event handler */
5681 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5682                                                          void *ptr)
5683 {
5684         struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
5685         struct cnic_dev *dev;
5686         int new_dev = 0;
5687
5688         dev = cnic_from_netdev(netdev);
5689
5690         if (!dev && event == NETDEV_REGISTER) {
5691                 /* Check for the hot-plug device */
5692                 dev = is_cnic_dev(netdev);
5693                 if (dev) {
5694                         new_dev = 1;
5695                         cnic_hold(dev);
5696                 }
5697         }
5698         if (dev) {
5699                 struct cnic_local *cp = dev->cnic_priv;
5700
5701                 if (new_dev)
5702                         cnic_ulp_init(dev);
5703                 else if (event == NETDEV_UNREGISTER)
5704                         cnic_ulp_exit(dev);
5705
5706                 if (event == NETDEV_UP) {
5707                         if (cnic_register_netdev(dev) != 0) {
5708                                 cnic_put(dev);
5709                                 goto done;
5710                         }
5711                         if (!cnic_start_hw(dev))
5712                                 cnic_ulp_start(dev);
5713                 }
5714
5715                 cnic_rcv_netevent(cp, event, 0);
5716
5717                 if (event == NETDEV_GOING_DOWN) {
5718                         cnic_ulp_stop(dev);
5719                         cnic_stop_hw(dev);
5720                         cnic_unregister_netdev(dev);
5721                 } else if (event == NETDEV_UNREGISTER) {
5722                         write_lock(&cnic_dev_lock);
5723                         list_del_init(&dev->list);
5724                         write_unlock(&cnic_dev_lock);
5725
5726                         cnic_put(dev);
5727                         cnic_free_dev(dev);
5728                         goto done;
5729                 }
5730                 cnic_put(dev);
5731         } else {
5732                 struct net_device *realdev;
5733                 u16 vid;
5734
5735                 vid = cnic_get_vlan(netdev, &realdev);
5736                 if (realdev) {
5737                         dev = cnic_from_netdev(realdev);
5738                         if (dev) {
5739                                 vid |= VLAN_CFI_MASK;   /* make non-zero */
5740                                 cnic_rcv_netevent(dev->cnic_priv, event, vid);
5741                                 cnic_put(dev);
5742                         }
5743                 }
5744         }
5745 done:
5746         return NOTIFY_DONE;
5747 }
5748
5749 static struct notifier_block cnic_netdev_notifier = {
5750         .notifier_call = cnic_netdev_event
5751 };
5752
5753 static void cnic_release(void)
5754 {
5755         struct cnic_uio_dev *udev;
5756
5757         while (!list_empty(&cnic_udev_list)) {
5758                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5759                                   list);
5760                 cnic_free_uio(udev);
5761         }
5762 }
5763
5764 static int __init cnic_init(void)
5765 {
5766         int rc = 0;
5767
5768         pr_info("%s", version);
5769
5770         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5771         if (rc) {
5772                 cnic_release();
5773                 return rc;
5774         }
5775
5776         cnic_wq = create_singlethread_workqueue("cnic_wq");
5777         if (!cnic_wq) {
5778                 cnic_release();
5779                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5780                 return -ENOMEM;
5781         }
5782
5783         return 0;
5784 }
5785
5786 static void __exit cnic_exit(void)
5787 {
5788         unregister_netdevice_notifier(&cnic_netdev_notifier);
5789         cnic_release();
5790         destroy_workqueue(cnic_wq);
5791 }
5792
5793 module_init(cnic_init);
5794 module_exit(cnic_exit);