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 = bitmap_zalloc(size, GFP_KERNEL);
 664         if (!id_tbl->table)
 665                 return -ENOMEM;
 666
 667         return 0;
 668 }
 669
 670 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 671 {
 672         bitmap_free(id_tbl->table);
 673         id_tbl->table = NULL;
 674 }
 675
 676 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 677 {
 678         int ret = -1;
 679
 680         id -= id_tbl->start;
 681         if (id >= id_tbl->max)
 682                 return ret;
 683
 684         spin_lock(&id_tbl->lock);
 685         if (!test_bit(id, id_tbl->table)) {
 686                 set_bit(id, id_tbl->table);
 687                 ret = 0;
 688         }
 689         spin_unlock(&id_tbl->lock);
 690         return ret;
 691 }
 692
 693 /* Returns -1 if not successful */
 694 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 695 {
 696         u32 id;
 697
 698         spin_lock(&id_tbl->lock);
 699         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 700         if (id >= id_tbl->max) {
 701                 id = -1;
 702                 if (id_tbl->next != 0) {
 703                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 704                         if (id >= id_tbl->next)
 705                                 id = -1;
 706                 }
 707         }
 708
 709         if (id < id_tbl->max) {
 710                 set_bit(id, id_tbl->table);
 711                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 712                 id += id_tbl->start;
 713         }
 714
 715         spin_unlock(&id_tbl->lock);
 716
 717         return id;
 718 }
 719
 720 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 721 {
 722         if (id == -1)
 723                 return;
 724
 725         id -= id_tbl->start;
 726         if (id >= id_tbl->max)
 727                 return;
 728
 729         clear_bit(id, id_tbl->table);
 730 }
 731
 732 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 733 {
 734         int i;
 735
 736         if (!dma->pg_arr)
 737                 return;
 738
 739         for (i = 0; i < dma->num_pages; i++) {
 740                 if (dma->pg_arr[i]) {
 741                         dma_free_coherent(&dev->pcidev->dev, CNIC_PAGE_SIZE,
 742                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 743                         dma->pg_arr[i] = NULL;
 744                 }
 745         }
 746         if (dma->pgtbl) {
 747                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 748                                   dma->pgtbl, dma->pgtbl_map);
 749                 dma->pgtbl = NULL;
 750         }
 751         kfree(dma->pg_arr);
 752         dma->pg_arr = NULL;
 753         dma->num_pages = 0;
 754 }
 755
 756 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 757 {
 758         int i;
 759         __le32 *page_table = (__le32 *) dma->pgtbl;
 760
 761         for (i = 0; i < dma->num_pages; i++) {
 762                 /* Each entry needs to be in big endian format. */
 763                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 764                 page_table++;
 765                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 766                 page_table++;
 767         }
 768 }
 769
 770 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 771 {
 772         int i;
 773         __le32 *page_table = (__le32 *) dma->pgtbl;
 774
 775         for (i = 0; i < dma->num_pages; i++) {
 776                 /* Each entry needs to be in little endian format. */
 777                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 778                 page_table++;
 779                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 780                 page_table++;
 781         }
 782 }
 783
 784 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 785                           int pages, int use_pg_tbl)
 786 {
 787         int i, size;
 788         struct cnic_local *cp = dev->cnic_priv;
 789
 790         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 791         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 792         if (dma->pg_arr == NULL)
 793                 return -ENOMEM;
 794
 795         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 796         dma->num_pages = pages;
 797
 798         for (i = 0; i < pages; i++) {
 799                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 800                                                     CNIC_PAGE_SIZE,
 801                                                     &dma->pg_map_arr[i],
 802                                                     GFP_ATOMIC);
 803                 if (dma->pg_arr[i] == NULL)
 804                         goto error;
 805         }
 806         if (!use_pg_tbl)
 807                 return 0;
 808
 809         dma->pgtbl_size = ((pages * 8) + CNIC_PAGE_SIZE - 1) &
 810                           ~(CNIC_PAGE_SIZE - 1);
 811         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 812                                         &dma->pgtbl_map, GFP_ATOMIC);
 813         if (dma->pgtbl == NULL)
 814                 goto error;
 815
 816         cp->setup_pgtbl(dev, dma);
 817
 818         return 0;
 819
 820 error:
 821         cnic_free_dma(dev, dma);
 822         return -ENOMEM;
 823 }
 824
 825 static void cnic_free_context(struct cnic_dev *dev)
 826 {
 827         struct cnic_local *cp = dev->cnic_priv;
 828         int i;
 829
 830         for (i = 0; i < cp->ctx_blks; i++) {
 831                 if (cp->ctx_arr[i].ctx) {
 832                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 833                                           cp->ctx_arr[i].ctx,
 834                                           cp->ctx_arr[i].mapping);
 835                         cp->ctx_arr[i].ctx = NULL;
 836                 }
 837         }
 838 }
 839
 840 static void __cnic_free_uio_rings(struct cnic_uio_dev *udev)
 841 {
 842         if (udev->l2_buf) {
 843                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 844                                   udev->l2_buf, udev->l2_buf_map);
 845                 udev->l2_buf = NULL;
 846         }
 847
 848         if (udev->l2_ring) {
 849                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 850                                   udev->l2_ring, udev->l2_ring_map);
 851                 udev->l2_ring = NULL;
 852         }
 853
 854 }
 855
 856 static void __cnic_free_uio(struct cnic_uio_dev *udev)
 857 {
 858         uio_unregister_device(&udev->cnic_uinfo);
 859
 860         __cnic_free_uio_rings(udev);
 861
 862         pci_dev_put(udev->pdev);
 863         kfree(udev);
 864 }
 865
 866 static void cnic_free_uio(struct cnic_uio_dev *udev)
 867 {
 868         if (!udev)
 869                 return;
 870
 871         write_lock(&cnic_dev_lock);
 872         list_del_init(&udev->list);
 873         write_unlock(&cnic_dev_lock);
 874         __cnic_free_uio(udev);
 875 }
 876
 877 static void cnic_free_resc(struct cnic_dev *dev)
 878 {
 879         struct cnic_local *cp = dev->cnic_priv;
 880         struct cnic_uio_dev *udev = cp->udev;
 881
 882         if (udev) {
 883                 udev->dev = NULL;
 884                 cp->udev = NULL;
 885                 if (udev->uio_dev == -1)
 886                         __cnic_free_uio_rings(udev);
 887         }
 888
 889         cnic_free_context(dev);
 890         kfree(cp->ctx_arr);
 891         cp->ctx_arr = NULL;
 892         cp->ctx_blks = 0;
 893
 894         cnic_free_dma(dev, &cp->gbl_buf_info);
 895         cnic_free_dma(dev, &cp->kwq_info);
 896         cnic_free_dma(dev, &cp->kwq_16_data_info);
 897         cnic_free_dma(dev, &cp->kcq2.dma);
 898         cnic_free_dma(dev, &cp->kcq1.dma);
 899         kfree(cp->iscsi_tbl);
 900         cp->iscsi_tbl = NULL;
 901         kfree(cp->ctx_tbl);
 902         cp->ctx_tbl = NULL;
 903
 904         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
 905         cnic_free_id_tbl(&cp->cid_tbl);
 906 }
 907
 908 static int cnic_alloc_context(struct cnic_dev *dev)
 909 {
 910         struct cnic_local *cp = dev->cnic_priv;
 911
 912         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
 913                 int i, k, arr_size;
 914
 915                 cp->ctx_blk_size = CNIC_PAGE_SIZE;
 916                 cp->cids_per_blk = CNIC_PAGE_SIZE / 128;
 917                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 918                            sizeof(struct cnic_ctx);
 919                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 920                 if (cp->ctx_arr == NULL)
 921                         return -ENOMEM;
 922
 923                 k = 0;
 924                 for (i = 0; i < 2; i++) {
 925                         u32 j, reg, off, lo, hi;
 926
 927                         if (i == 0)
 928                                 off = BNX2_PG_CTX_MAP;
 929                         else
 930                                 off = BNX2_ISCSI_CTX_MAP;
 931
 932                         reg = cnic_reg_rd_ind(dev, off);
 933                         lo = reg >> 16;
 934                         hi = reg & 0xffff;
 935                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 936                                 cp->ctx_arr[k].cid = j;
 937                 }
 938
 939                 cp->ctx_blks = k;
 940                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 941                         cp->ctx_blks = 0;
 942                         return -ENOMEM;
 943                 }
 944
 945                 for (i = 0; i < cp->ctx_blks; i++) {
 946                         cp->ctx_arr[i].ctx =
 947                                 dma_alloc_coherent(&dev->pcidev->dev,
 948                                                    CNIC_PAGE_SIZE,
 949                                                    &cp->ctx_arr[i].mapping,
 950                                                    GFP_KERNEL);
 951                         if (cp->ctx_arr[i].ctx == NULL)
 952                                 return -ENOMEM;
 953                 }
 954         }
 955         return 0;
 956 }
 957
 958 static u16 cnic_bnx2_next_idx(u16 idx)
 959 {
 960         return idx + 1;
 961 }
 962
 963 static u16 cnic_bnx2_hw_idx(u16 idx)
 964 {
 965         return idx;
 966 }
 967
 968 static u16 cnic_bnx2x_next_idx(u16 idx)
 969 {
 970         idx++;
 971         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 972                 idx++;
 973
 974         return idx;
 975 }
 976
 977 static u16 cnic_bnx2x_hw_idx(u16 idx)
 978 {
 979         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 980                 idx++;
 981         return idx;
 982 }
 983
 984 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
 985                           bool use_pg_tbl)
 986 {
 987         int err, i, use_page_tbl = 0;
 988         struct kcqe **kcq;
 989
 990         if (use_pg_tbl)
 991                 use_page_tbl = 1;
 992
 993         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
 994         if (err)
 995                 return err;
 996
 997         kcq = (struct kcqe **) info->dma.pg_arr;
 998         info->kcq = kcq;
 999
1000         info->next_idx = cnic_bnx2_next_idx;
1001         info->hw_idx = cnic_bnx2_hw_idx;
1002         if (use_pg_tbl)
1003                 return 0;
1004
1005         info->next_idx = cnic_bnx2x_next_idx;
1006         info->hw_idx = cnic_bnx2x_hw_idx;
1007
1008         for (i = 0; i < KCQ_PAGE_CNT; i++) {
1009                 struct bnx2x_bd_chain_next *next =
1010                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
1011                 int j = i + 1;
1012
1013                 if (j >= KCQ_PAGE_CNT)
1014                         j = 0;
1015                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
1016                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
1017         }
1018         return 0;
1019 }
1020
1021 static int __cnic_alloc_uio_rings(struct cnic_uio_dev *udev, int pages)
1022 {
1023         struct cnic_local *cp = udev->dev->cnic_priv;
1024
1025         if (udev->l2_ring)
1026                 return 0;
1027
1028         udev->l2_ring_size = pages * CNIC_PAGE_SIZE;
1029         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
1030                                            &udev->l2_ring_map, GFP_KERNEL);
1031         if (!udev->l2_ring)
1032                 return -ENOMEM;
1033
1034         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
1035         udev->l2_buf_size = CNIC_PAGE_ALIGN(udev->l2_buf_size);
1036         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1037                                           &udev->l2_buf_map, GFP_KERNEL);
1038         if (!udev->l2_buf) {
1039                 __cnic_free_uio_rings(udev);
1040                 return -ENOMEM;
1041         }
1042
1043         return 0;
1044
1045 }
1046
1047 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
1048 {
1049         struct cnic_local *cp = dev->cnic_priv;
1050         struct cnic_uio_dev *udev;
1051
1052         list_for_each_entry(udev, &cnic_udev_list, list) {
1053                 if (udev->pdev == dev->pcidev) {
1054                         udev->dev = dev;
1055                         if (__cnic_alloc_uio_rings(udev, pages)) {
1056                                 udev->dev = NULL;
1057                                 return -ENOMEM;
1058                         }
1059                         cp->udev = udev;
1060                         return 0;
1061                 }
1062         }
1063
1064         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
1065         if (!udev)
1066                 return -ENOMEM;
1067
1068         udev->uio_dev = -1;
1069
1070         udev->dev = dev;
1071         udev->pdev = dev->pcidev;
1072
1073         if (__cnic_alloc_uio_rings(udev, pages))
1074                 goto err_udev;
1075
1076         list_add(&udev->list, &cnic_udev_list);
1077
1078         pci_dev_get(udev->pdev);
1079
1080         cp->udev = udev;
1081
1082         return 0;
1083
1084  err_udev:
1085         kfree(udev);
1086         return -ENOMEM;
1087 }
1088
1089 static int cnic_init_uio(struct cnic_dev *dev)
1090 {
1091         struct cnic_local *cp = dev->cnic_priv;
1092         struct cnic_uio_dev *udev = cp->udev;
1093         struct uio_info *uinfo;
1094         int ret = 0;
1095
1096         if (!udev)
1097                 return -ENOMEM;
1098
1099         uinfo = &udev->cnic_uinfo;
1100
1101         uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
1102         uinfo->mem[0].internal_addr = dev->regview;
1103         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1104
1105         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1106                 uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
1107                                                      TX_MAX_TSS_RINGS + 1);
1108                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1109                                         CNIC_PAGE_MASK;
1110                 uinfo->mem[1].dma_addr = cp->status_blk_map;
1111                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1112                         uinfo->mem[1].size = PAGE_ALIGN(BNX2_SBLK_MSIX_ALIGN_SIZE * 9);
1113                 else
1114                         uinfo->mem[1].size = PAGE_ALIGN(BNX2_SBLK_MSIX_ALIGN_SIZE);
1115
1116                 uinfo->name = "bnx2_cnic";
1117         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1118                 uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);
1119
1120                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1121                         CNIC_PAGE_MASK;
1122                 uinfo->mem[1].dma_addr = cp->status_blk_map;
1123                 uinfo->mem[1].size = PAGE_ALIGN(sizeof(*cp->bnx2x_def_status_blk));
1124
1125                 uinfo->name = "bnx2x_cnic";
1126         }
1127
1128         uinfo->mem[1].dma_device = &dev->pcidev->dev;
1129         uinfo->mem[1].memtype = UIO_MEM_DMA_COHERENT;
1130
1131         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1132         uinfo->mem[2].dma_addr = udev->l2_ring_map;
1133         uinfo->mem[2].size = PAGE_ALIGN(udev->l2_ring_size);
1134         uinfo->mem[2].dma_device = &dev->pcidev->dev;
1135         uinfo->mem[2].memtype = UIO_MEM_DMA_COHERENT;
1136
1137         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1138         uinfo->mem[3].dma_addr = udev->l2_buf_map;
1139         uinfo->mem[3].size = PAGE_ALIGN(udev->l2_buf_size);
1140         uinfo->mem[3].dma_device = &dev->pcidev->dev;
1141         uinfo->mem[3].memtype = UIO_MEM_DMA_COHERENT;
1142
1143         uinfo->version = CNIC_MODULE_VERSION;
1144         uinfo->irq = UIO_IRQ_CUSTOM;
1145
1146         uinfo->open = cnic_uio_open;
1147         uinfo->release = cnic_uio_close;
1148
1149         if (udev->uio_dev == -1) {
1150                 if (!uinfo->priv) {
1151                         uinfo->priv = udev;
1152
1153                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1154                 }
1155         } else {
1156                 cnic_init_rings(dev);
1157         }
1158
1159         return ret;
1160 }
1161
1162 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1163 {
1164         struct cnic_local *cp = dev->cnic_priv;
1165         int ret;
1166
1167         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1168         if (ret)
1169                 goto error;
1170         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1171
1172         ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1173         if (ret)
1174                 goto error;
1175
1176         ret = cnic_alloc_context(dev);
1177         if (ret)
1178                 goto error;
1179
1180         ret = cnic_alloc_uio_rings(dev, 2);
1181         if (ret)
1182                 goto error;
1183
1184         ret = cnic_init_uio(dev);
1185         if (ret)
1186                 goto error;
1187
1188         return 0;
1189
1190 error:
1191         cnic_free_resc(dev);
1192         return ret;
1193 }
1194
1195 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1196 {
1197         struct cnic_local *cp = dev->cnic_priv;
1198         struct bnx2x *bp = netdev_priv(dev->netdev);
1199         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1200         int total_mem, blks, i;
1201
1202         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1203         blks = total_mem / ctx_blk_size;
1204         if (total_mem % ctx_blk_size)
1205                 blks++;
1206
1207         if (blks > cp->ethdev->ctx_tbl_len)
1208                 return -ENOMEM;
1209
1210         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1211         if (cp->ctx_arr == NULL)
1212                 return -ENOMEM;
1213
1214         cp->ctx_blks = blks;
1215         cp->ctx_blk_size = ctx_blk_size;
1216         if (!CHIP_IS_E1(bp))
1217                 cp->ctx_align = 0;
1218         else
1219                 cp->ctx_align = ctx_blk_size;
1220
1221         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1222
1223         for (i = 0; i < blks; i++) {
1224                 cp->ctx_arr[i].ctx =
1225                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1226                                            &cp->ctx_arr[i].mapping,
1227                                            GFP_KERNEL);
1228                 if (cp->ctx_arr[i].ctx == NULL)
1229                         return -ENOMEM;
1230
1231                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1232                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1233                                 cnic_free_context(dev);
1234                                 cp->ctx_blk_size += cp->ctx_align;
1235                                 i = -1;
1236                                 continue;
1237                         }
1238                 }
1239         }
1240         return 0;
1241 }
1242
1243 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1244 {
1245         struct cnic_local *cp = dev->cnic_priv;
1246         struct bnx2x *bp = netdev_priv(dev->netdev);
1247         struct cnic_eth_dev *ethdev = cp->ethdev;
1248         u32 start_cid = ethdev->starting_cid;
1249         int i, j, n, ret, pages;
1250         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1251
1252         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1253         cp->iscsi_start_cid = start_cid;
1254         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1255
1256         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
1257                 cp->max_cid_space += dev->max_fcoe_conn;
1258                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1259                 if (!cp->fcoe_init_cid)
1260                         cp->fcoe_init_cid = 0x10;
1261         }
1262
1263         cp->iscsi_tbl = kcalloc(MAX_ISCSI_TBL_SZ, sizeof(struct cnic_iscsi),
1264                                 GFP_KERNEL);
1265         if (!cp->iscsi_tbl)
1266                 goto error;
1267
1268         cp->ctx_tbl = kcalloc(cp->max_cid_space, sizeof(struct cnic_context),
1269                               GFP_KERNEL);
1270         if (!cp->ctx_tbl)
1271                 goto error;
1272
1273         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1274                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1275                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1276         }
1277
1278         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1279                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1280
1281         pages = CNIC_PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1282                 CNIC_PAGE_SIZE;
1283
1284         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1285         if (ret)
1286                 goto error;
1287
1288         n = CNIC_PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1289         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1290                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1291
1292                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1293                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1294                                                    off;
1295
1296                 if ((i % n) == (n - 1))
1297                         j++;
1298         }
1299
1300         ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1301         if (ret)
1302                 goto error;
1303
1304         if (CNIC_SUPPORTS_FCOE(bp)) {
1305                 ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1306                 if (ret)
1307                         goto error;
1308         }
1309
1310         pages = CNIC_PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / CNIC_PAGE_SIZE;
1311         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1312         if (ret)
1313                 goto error;
1314
1315         ret = cnic_alloc_bnx2x_context(dev);
1316         if (ret)
1317                 goto error;
1318
1319         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
1320                 return 0;
1321
1322         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1323         cp->status_blk_map = cp->ethdev->irq_arr[1].status_blk_map;
1324
1325         cp->l2_rx_ring_size = 15;
1326
1327         ret = cnic_alloc_uio_rings(dev, 4);
1328         if (ret)
1329                 goto error;
1330
1331         ret = cnic_init_uio(dev);
1332         if (ret)
1333                 goto error;
1334
1335         return 0;
1336
1337 error:
1338         cnic_free_resc(dev);
1339         return -ENOMEM;
1340 }
1341
1342 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1343 {
1344         return cp->max_kwq_idx -
1345                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1346 }
1347
1348 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1349                                   u32 num_wqes)
1350 {
1351         struct cnic_local *cp = dev->cnic_priv;
1352         struct kwqe *prod_qe;
1353         u16 prod, sw_prod, i;
1354
1355         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1356                 return -EAGAIN;         /* bnx2 is down */
1357
1358         spin_lock_bh(&cp->cnic_ulp_lock);
1359         if (num_wqes > cnic_kwq_avail(cp) &&
1360             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1361                 spin_unlock_bh(&cp->cnic_ulp_lock);
1362                 return -EAGAIN;
1363         }
1364
1365         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1366
1367         prod = cp->kwq_prod_idx;
1368         sw_prod = prod & MAX_KWQ_IDX;
1369         for (i = 0; i < num_wqes; i++) {
1370                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1371                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1372                 prod++;
1373                 sw_prod = prod & MAX_KWQ_IDX;
1374         }
1375         cp->kwq_prod_idx = prod;
1376
1377         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1378
1379         spin_unlock_bh(&cp->cnic_ulp_lock);
1380         return 0;
1381 }
1382
1383 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1384                                    union l5cm_specific_data *l5_data)
1385 {
1386         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1387         dma_addr_t map;
1388
1389         map = ctx->kwqe_data_mapping;
1390         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1391         l5_data->phy_address.hi = (u64) map >> 32;
1392         return ctx->kwqe_data;
1393 }
1394
1395 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1396                                 u32 type, union l5cm_specific_data *l5_data)
1397 {
1398         struct cnic_local *cp = dev->cnic_priv;
1399         struct bnx2x *bp = netdev_priv(dev->netdev);
1400         struct l5cm_spe kwqe;
1401         struct kwqe_16 *kwq[1];
1402         u16 type_16;
1403         int ret;
1404
1405         kwqe.hdr.conn_and_cmd_data =
1406                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1407                              BNX2X_HW_CID(bp, cid)));
1408
1409         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1410         type_16 |= (bp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1411                    SPE_HDR_FUNCTION_ID;
1412
1413         kwqe.hdr.type = cpu_to_le16(type_16);
1414         kwqe.hdr.reserved1 = 0;
1415         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1416         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1417
1418         kwq[0] = (struct kwqe_16 *) &kwqe;
1419
1420         spin_lock_bh(&cp->cnic_ulp_lock);
1421         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1422         spin_unlock_bh(&cp->cnic_ulp_lock);
1423
1424         if (ret == 1)
1425                 return 0;
1426
1427         return ret;
1428 }
1429
1430 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1431                                    struct kcqe *cqes[], u32 num_cqes)
1432 {
1433         struct cnic_local *cp = dev->cnic_priv;
1434         struct cnic_ulp_ops *ulp_ops;
1435
1436         rcu_read_lock();
1437         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1438         if (likely(ulp_ops)) {
1439                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1440                                           cqes, num_cqes);
1441         }
1442         rcu_read_unlock();
1443 }
1444
1445 static void cnic_bnx2x_set_tcp_options(struct cnic_dev *dev, int time_stamps,
1446                                        int en_tcp_dack)
1447 {
1448         struct bnx2x *bp = netdev_priv(dev->netdev);
1449         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1450         u16 tstorm_flags = 0;
1451
1452         if (time_stamps) {
1453                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1454                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1455         }
1456         if (en_tcp_dack)
1457                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_DELAYED_ACK_EN;
1458
1459         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1460                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), xstorm_flags);
1461
1462         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1463                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), tstorm_flags);
1464 }
1465
1466 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1467 {
1468         struct cnic_local *cp = dev->cnic_priv;
1469         struct bnx2x *bp = netdev_priv(dev->netdev);
1470         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1471         int hq_bds, pages;
1472         u32 pfid = bp->pfid;
1473
1474         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1475         cp->num_ccells = req1->num_ccells_per_conn;
1476         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1477                               cp->num_iscsi_tasks;
1478         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1479                         BNX2X_ISCSI_R2TQE_SIZE;
1480         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1481         pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1482         hq_bds = pages * (CNIC_PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1483         cp->num_cqs = req1->num_cqs;
1484
1485         if (!dev->max_iscsi_conn)
1486                 return 0;
1487
1488         /* init Tstorm RAM */
1489         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1490                   req1->rq_num_wqes);
1491         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1492                   CNIC_PAGE_SIZE);
1493         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1494                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1495         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1496                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1497                   req1->num_tasks_per_conn);
1498
1499         /* init Ustorm RAM */
1500         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1501                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1502                   req1->rq_buffer_size);
1503         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1504                   CNIC_PAGE_SIZE);
1505         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1506                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1507         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1508                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1509                   req1->num_tasks_per_conn);
1510         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1511                   req1->rq_num_wqes);
1512         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1513                   req1->cq_num_wqes);
1514         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1515                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1516
1517         /* init Xstorm RAM */
1518         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1519                   CNIC_PAGE_SIZE);
1520         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1521                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1522         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1523                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1524                   req1->num_tasks_per_conn);
1525         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1526                   hq_bds);
1527         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1528                   req1->num_tasks_per_conn);
1529         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1530                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1531
1532         /* init Cstorm RAM */
1533         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1534                   CNIC_PAGE_SIZE);
1535         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1536                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1537         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1538                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1539                   req1->num_tasks_per_conn);
1540         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1541                   req1->cq_num_wqes);
1542         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1543                   hq_bds);
1544
1545         cnic_bnx2x_set_tcp_options(dev,
1546                         req1->flags & ISCSI_KWQE_INIT1_TIME_STAMPS_ENABLE,
1547                         req1->flags & ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE);
1548
1549         return 0;
1550 }
1551
1552 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1553 {
1554         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1555         struct bnx2x *bp = netdev_priv(dev->netdev);
1556         u32 pfid = bp->pfid;
1557         struct iscsi_kcqe kcqe;
1558         struct kcqe *cqes[1];
1559
1560         memset(&kcqe, 0, sizeof(kcqe));
1561         if (!dev->max_iscsi_conn) {
1562                 kcqe.completion_status =
1563                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1564                 goto done;
1565         }
1566
1567         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1568                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1569         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1570                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1571                 req2->error_bit_map[1]);
1572
1573         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1574                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1575         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1576                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1577         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1578                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1579                 req2->error_bit_map[1]);
1580
1581         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1582                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1583
1584         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1585
1586 done:
1587         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1588         cqes[0] = (struct kcqe *) &kcqe;
1589         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1590
1591         return 0;
1592 }
1593
1594 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1595 {
1596         struct cnic_local *cp = dev->cnic_priv;
1597         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1598
1599         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1600                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1601
1602                 cnic_free_dma(dev, &iscsi->hq_info);
1603                 cnic_free_dma(dev, &iscsi->r2tq_info);
1604                 cnic_free_dma(dev, &iscsi->task_array_info);
1605                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1606         } else {
1607                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1608         }
1609
1610         ctx->cid = 0;
1611 }
1612
1613 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1614 {
1615         u32 cid;
1616         int ret, pages;
1617         struct cnic_local *cp = dev->cnic_priv;
1618         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1619         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1620
1621         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1622                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1623                 if (cid == -1) {
1624                         ret = -ENOMEM;
1625                         goto error;
1626                 }
1627                 ctx->cid = cid;
1628                 return 0;
1629         }
1630
1631         cid = cnic_alloc_new_id(&cp->cid_tbl);
1632         if (cid == -1) {
1633                 ret = -ENOMEM;
1634                 goto error;
1635         }
1636
1637         ctx->cid = cid;
1638         pages = CNIC_PAGE_ALIGN(cp->task_array_size) / CNIC_PAGE_SIZE;
1639
1640         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1641         if (ret)
1642                 goto error;
1643
1644         pages = CNIC_PAGE_ALIGN(cp->r2tq_size) / CNIC_PAGE_SIZE;
1645         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1646         if (ret)
1647                 goto error;
1648
1649         pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1650         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1651         if (ret)
1652                 goto error;
1653
1654         return 0;
1655
1656 error:
1657         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1658         return ret;
1659 }
1660
1661 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1662                                 struct regpair *ctx_addr)
1663 {
1664         struct cnic_local *cp = dev->cnic_priv;
1665         struct cnic_eth_dev *ethdev = cp->ethdev;
1666         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1667         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1668         unsigned long align_off = 0;
1669         dma_addr_t ctx_map;
1670         void *ctx;
1671
1672         if (cp->ctx_align) {
1673                 unsigned long mask = cp->ctx_align - 1;
1674
1675                 if (cp->ctx_arr[blk].mapping & mask)
1676                         align_off = cp->ctx_align -
1677                                     (cp->ctx_arr[blk].mapping & mask);
1678         }
1679         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1680                 (off * BNX2X_CONTEXT_MEM_SIZE);
1681         ctx = cp->ctx_arr[blk].ctx + align_off +
1682               (off * BNX2X_CONTEXT_MEM_SIZE);
1683         if (init)
1684                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1685
1686         ctx_addr->lo = ctx_map & 0xffffffff;
1687         ctx_addr->hi = (u64) ctx_map >> 32;
1688         return ctx;
1689 }
1690
1691 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1692                                 u32 num)
1693 {
1694         struct cnic_local *cp = dev->cnic_priv;
1695         struct bnx2x *bp = netdev_priv(dev->netdev);
1696         struct iscsi_kwqe_conn_offload1 *req1 =
1697                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1698         struct iscsi_kwqe_conn_offload2 *req2 =
1699                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1700         struct iscsi_kwqe_conn_offload3 *req3;
1701         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1702         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1703         u32 cid = ctx->cid;
1704         u32 hw_cid = BNX2X_HW_CID(bp, cid);
1705         struct iscsi_context *ictx;
1706         struct regpair context_addr;
1707         int i, j, n = 2, n_max;
1708         u8 port = BP_PORT(bp);
1709
1710         ctx->ctx_flags = 0;
1711         if (!req2->num_additional_wqes)
1712                 return -EINVAL;
1713
1714         n_max = req2->num_additional_wqes + 2;
1715
1716         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1717         if (ictx == NULL)
1718                 return -ENOMEM;
1719
1720         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1721
1722         ictx->xstorm_ag_context.hq_prod = 1;
1723
1724         ictx->xstorm_st_context.iscsi.first_burst_length =
1725                 ISCSI_DEF_FIRST_BURST_LEN;
1726         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1727                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1728         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1729                 req1->sq_page_table_addr_lo;
1730         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1731                 req1->sq_page_table_addr_hi;
1732         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1733         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1734         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1735                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1736         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1737                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1738         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1739                 iscsi->hq_info.pgtbl[0];
1740         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1741                 iscsi->hq_info.pgtbl[1];
1742         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1743                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1744         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1745                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1746         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1747                 iscsi->r2tq_info.pgtbl[0];
1748         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1749                 iscsi->r2tq_info.pgtbl[1];
1750         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1751                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1752         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1753                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1754         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1755                 BNX2X_ISCSI_PBL_NOT_CACHED;
1756         ictx->xstorm_st_context.iscsi.flags.flags |=
1757                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1758         ictx->xstorm_st_context.iscsi.flags.flags |=
1759                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1760         ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1761                 ETH_P_8021Q;
1762         if (BNX2X_CHIP_IS_E2_PLUS(bp) &&
1763             bp->common.chip_port_mode == CHIP_2_PORT_MODE) {
1764
1765                 port = 0;
1766         }
1767         ictx->xstorm_st_context.common.flags =
1768                 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1769         ictx->xstorm_st_context.common.flags =
1770                 port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1771
1772         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1773         /* TSTORM requires the base address of RQ DB & not PTE */
1774         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1775                 req2->rq_page_table_addr_lo & CNIC_PAGE_MASK;
1776         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1777                 req2->rq_page_table_addr_hi;
1778         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1779         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1780         ictx->tstorm_st_context.tcp.flags2 |=
1781                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1782         ictx->tstorm_st_context.tcp.ooo_support_mode =
1783                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1784
1785         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1786
1787         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1788                 req2->rq_page_table_addr_lo;
1789         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1790                 req2->rq_page_table_addr_hi;
1791         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1792         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1793         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1794                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1795         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1796                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1797         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1798                 iscsi->r2tq_info.pgtbl[0];
1799         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1800                 iscsi->r2tq_info.pgtbl[1];
1801         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1802                 req1->cq_page_table_addr_lo;
1803         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1804                 req1->cq_page_table_addr_hi;
1805         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1806         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1807         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1808         ictx->ustorm_st_context.task_pbe_cache_index =
1809                 BNX2X_ISCSI_PBL_NOT_CACHED;
1810         ictx->ustorm_st_context.task_pdu_cache_index =
1811                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1812
1813         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1814                 if (j == 3) {
1815                         if (n >= n_max)
1816                                 break;
1817                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1818                         j = 0;
1819                 }
1820                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1821                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1822                         req3->qp_first_pte[j].hi;
1823                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1824                         req3->qp_first_pte[j].lo;
1825         }
1826
1827         ictx->ustorm_st_context.task_pbl_base.lo =
1828                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1829         ictx->ustorm_st_context.task_pbl_base.hi =
1830                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1831         ictx->ustorm_st_context.tce_phy_addr.lo =
1832                 iscsi->task_array_info.pgtbl[0];
1833         ictx->ustorm_st_context.tce_phy_addr.hi =
1834                 iscsi->task_array_info.pgtbl[1];
1835         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1836         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1837         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1838         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1839                 ISCSI_DEF_MAX_BURST_LEN;
1840         ictx->ustorm_st_context.negotiated_rx |=
1841                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1842                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1843
1844         ictx->cstorm_st_context.hq_pbl_base.lo =
1845                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1846         ictx->cstorm_st_context.hq_pbl_base.hi =
1847                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1848         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1849         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1850         ictx->cstorm_st_context.task_pbl_base.lo =
1851                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1852         ictx->cstorm_st_context.task_pbl_base.hi =
1853                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1854         /* CSTORM and USTORM initialization is different, CSTORM requires
1855          * CQ DB base & not PTE addr */
1856         ictx->cstorm_st_context.cq_db_base.lo =
1857                 req1->cq_page_table_addr_lo & CNIC_PAGE_MASK;
1858         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1859         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1860         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1861         for (i = 0; i < cp->num_cqs; i++) {
1862                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1863                         ISCSI_INITIAL_SN;
1864                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1865                         ISCSI_INITIAL_SN;
1866         }
1867
1868         ictx->xstorm_ag_context.cdu_reserved =
1869                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1870                                        ISCSI_CONNECTION_TYPE);
1871         ictx->ustorm_ag_context.cdu_usage =
1872                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1873                                        ISCSI_CONNECTION_TYPE);
1874         return 0;
1875
1876 }
1877
1878 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1879                                    u32 num, int *work)
1880 {
1881         struct iscsi_kwqe_conn_offload1 *req1;
1882         struct iscsi_kwqe_conn_offload2 *req2;
1883         struct cnic_local *cp = dev->cnic_priv;
1884         struct bnx2x *bp = netdev_priv(dev->netdev);
1885         struct cnic_context *ctx;
1886         struct iscsi_kcqe kcqe;
1887         struct kcqe *cqes[1];
1888         u32 l5_cid;
1889         int ret = 0;
1890
1891         if (num < 2) {
1892                 *work = num;
1893                 return -EINVAL;
1894         }
1895
1896         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1897         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1898         if ((num - 2) < req2->num_additional_wqes) {
1899                 *work = num;
1900                 return -EINVAL;
1901         }
1902         *work = 2 + req2->num_additional_wqes;
1903
1904         l5_cid = req1->iscsi_conn_id;
1905         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1906                 return -EINVAL;
1907
1908         memset(&kcqe, 0, sizeof(kcqe));
1909         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1910         kcqe.iscsi_conn_id = l5_cid;
1911         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1912
1913         ctx = &cp->ctx_tbl[l5_cid];
1914         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1915                 kcqe.completion_status =
1916                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1917                 goto done;
1918         }
1919
1920         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1921                 atomic_dec(&cp->iscsi_conn);
1922                 goto done;
1923         }
1924         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1925         if (ret) {
1926                 atomic_dec(&cp->iscsi_conn);
1927                 goto done;
1928         }
1929         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1930         if (ret < 0) {
1931                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1932                 atomic_dec(&cp->iscsi_conn);
1933                 goto done;
1934         }
1935
1936         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1937         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(bp, cp->ctx_tbl[l5_cid].cid);
1938
1939 done:
1940         cqes[0] = (struct kcqe *) &kcqe;
1941         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1942         return 0;
1943 }
1944
1945
1946 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1947 {
1948         struct cnic_local *cp = dev->cnic_priv;
1949         struct iscsi_kwqe_conn_update *req =
1950                 (struct iscsi_kwqe_conn_update *) kwqe;
1951         void *data;
1952         union l5cm_specific_data l5_data;
1953         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1954         int ret;
1955
1956         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1957                 return -EINVAL;
1958
1959         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1960         if (!data)
1961                 return -ENOMEM;
1962
1963         memcpy(data, kwqe, sizeof(struct kwqe));
1964
1965         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1966                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1967         return ret;
1968 }
1969
1970 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1971 {
1972         struct cnic_local *cp = dev->cnic_priv;
1973         struct bnx2x *bp = netdev_priv(dev->netdev);
1974         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1975         union l5cm_specific_data l5_data;
1976         int ret;
1977         u32 hw_cid;
1978
1979         init_waitqueue_head(&ctx->waitq);
1980         ctx->wait_cond = 0;
1981         memset(&l5_data, 0, sizeof(l5_data));
1982         hw_cid = BNX2X_HW_CID(bp, ctx->cid);
1983
1984         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1985                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1986
1987         if (ret == 0) {
1988                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1989                 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1990                         return -EBUSY;
1991         }
1992
1993         return 0;
1994 }
1995
1996 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1997 {
1998         struct cnic_local *cp = dev->cnic_priv;
1999         struct iscsi_kwqe_conn_destroy *req =
2000                 (struct iscsi_kwqe_conn_destroy *) kwqe;
2001         u32 l5_cid = req->reserved0;
2002         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2003         int ret = 0;
2004         struct iscsi_kcqe kcqe;
2005         struct kcqe *cqes[1];
2006
2007         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2008                 goto skip_cfc_delete;
2009
2010         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
2011                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
2012
2013                 if (delta > (2 * HZ))
2014                         delta = 0;
2015
2016                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2017                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
2018                 goto destroy_reply;
2019         }
2020
2021         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
2022
2023 skip_cfc_delete:
2024         cnic_free_bnx2x_conn_resc(dev, l5_cid);
2025
2026         if (!ret) {
2027                 atomic_dec(&cp->iscsi_conn);
2028                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2029         }
2030
2031 destroy_reply:
2032         memset(&kcqe, 0, sizeof(kcqe));
2033         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
2034         kcqe.iscsi_conn_id = l5_cid;
2035         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
2036         kcqe.iscsi_conn_context_id = req->context_id;
2037
2038         cqes[0] = (struct kcqe *) &kcqe;
2039         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
2040
2041         return 0;
2042 }
2043
2044 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
2045                                       struct l4_kwq_connect_req1 *kwqe1,
2046                                       struct l4_kwq_connect_req3 *kwqe3,
2047                                       struct l5cm_active_conn_buffer *conn_buf)
2048 {
2049         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
2050         struct l5cm_xstorm_conn_buffer *xstorm_buf =
2051                 &conn_buf->xstorm_conn_buffer;
2052         struct l5cm_tstorm_conn_buffer *tstorm_buf =
2053                 &conn_buf->tstorm_conn_buffer;
2054         struct regpair context_addr;
2055         u32 cid = BNX2X_SW_CID(kwqe1->cid);
2056         struct in6_addr src_ip, dst_ip;
2057         int i;
2058         u32 *addrp;
2059
2060         addrp = (u32 *) &conn_addr->local_ip_addr;
2061         for (i = 0; i < 4; i++, addrp++)
2062                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2063
2064         addrp = (u32 *) &conn_addr->remote_ip_addr;
2065         for (i = 0; i < 4; i++, addrp++)
2066                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2067
2068         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
2069
2070         xstorm_buf->context_addr.hi = context_addr.hi;
2071         xstorm_buf->context_addr.lo = context_addr.lo;
2072         xstorm_buf->mss = 0xffff;
2073         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
2074         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
2075                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
2076         xstorm_buf->pseudo_header_checksum =
2077                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
2078
2079         if (kwqe3->ka_timeout) {
2080                 tstorm_buf->ka_enable = 1;
2081                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
2082                 tstorm_buf->ka_interval = kwqe3->ka_interval;
2083                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
2084         }
2085         tstorm_buf->max_rt_time = 0xffffffff;
2086 }
2087
2088 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2089 {
2090         struct bnx2x *bp = netdev_priv(dev->netdev);
2091         u32 pfid = bp->pfid;
2092         u8 *mac = dev->mac_addr;
2093
2094         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2095                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2096         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2097                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2098         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2099                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2100         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2101                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2102         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2103                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2104         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2105                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2106
2107         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2108                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2109         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2110                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2111                  mac[4]);
2112         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2113                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2114         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2115                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2116                  mac[2]);
2117         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2118                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2119         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2120                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2121                  mac[0]);
2122 }
2123
2124 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2125                               u32 num, int *work)
2126 {
2127         struct cnic_local *cp = dev->cnic_priv;
2128         struct bnx2x *bp = netdev_priv(dev->netdev);
2129         struct l4_kwq_connect_req1 *kwqe1 =
2130                 (struct l4_kwq_connect_req1 *) wqes[0];
2131         struct l4_kwq_connect_req3 *kwqe3;
2132         struct l5cm_active_conn_buffer *conn_buf;
2133         struct l5cm_conn_addr_params *conn_addr;
2134         union l5cm_specific_data l5_data;
2135         u32 l5_cid = kwqe1->pg_cid;
2136         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2137         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2138         int ret;
2139
2140         if (num < 2) {
2141                 *work = num;
2142                 return -EINVAL;
2143         }
2144
2145         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2146                 *work = 3;
2147         else
2148                 *work = 2;
2149
2150         if (num < *work) {
2151                 *work = num;
2152                 return -EINVAL;
2153         }
2154
2155         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2156                 netdev_err(dev->netdev, "conn_buf size too big\n");
2157                 return -ENOMEM;
2158         }
2159         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2160         if (!conn_buf)
2161                 return -ENOMEM;
2162
2163         memset(conn_buf, 0, sizeof(*conn_buf));
2164
2165         conn_addr = &conn_buf->conn_addr_buf;
2166         conn_addr->remote_addr_0 = csk->ha[0];
2167         conn_addr->remote_addr_1 = csk->ha[1];
2168         conn_addr->remote_addr_2 = csk->ha[2];
2169         conn_addr->remote_addr_3 = csk->ha[3];
2170         conn_addr->remote_addr_4 = csk->ha[4];
2171         conn_addr->remote_addr_5 = csk->ha[5];
2172
2173         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2174                 struct l4_kwq_connect_req2 *kwqe2 =
2175                         (struct l4_kwq_connect_req2 *) wqes[1];
2176
2177                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2178                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2179                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2180
2181                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2182                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2183                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2184                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2185         }
2186         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2187
2188         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2189         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2190         conn_addr->local_tcp_port = kwqe1->src_port;
2191         conn_addr->remote_tcp_port = kwqe1->dst_port;
2192
2193         conn_addr->pmtu = kwqe3->pmtu;
2194         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2195
2196         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2197                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(bp->pfid), csk->vlan_id);
2198
2199         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2200                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2201         if (!ret)
2202                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2203
2204         return ret;
2205 }
2206
2207 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2208 {
2209         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2210         union l5cm_specific_data l5_data;
2211         int ret;
2212
2213         memset(&l5_data, 0, sizeof(l5_data));
2214         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2215                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2216         return ret;
2217 }
2218
2219 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2220 {
2221         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2222         union l5cm_specific_data l5_data;
2223         int ret;
2224
2225         memset(&l5_data, 0, sizeof(l5_data));
2226         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2227                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2228         return ret;
2229 }
2230 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2231 {
2232         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2233         struct l4_kcq kcqe;
2234         struct kcqe *cqes[1];
2235
2236         memset(&kcqe, 0, sizeof(kcqe));
2237         kcqe.pg_host_opaque = req->host_opaque;
2238         kcqe.pg_cid = req->host_opaque;
2239         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2240         cqes[0] = (struct kcqe *) &kcqe;
2241         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2242         return 0;
2243 }
2244
2245 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2246 {
2247         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2248         struct l4_kcq kcqe;
2249         struct kcqe *cqes[1];
2250
2251         memset(&kcqe, 0, sizeof(kcqe));
2252         kcqe.pg_host_opaque = req->pg_host_opaque;
2253         kcqe.pg_cid = req->pg_cid;
2254         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2255         cqes[0] = (struct kcqe *) &kcqe;
2256         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2257         return 0;
2258 }
2259
2260 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2261 {
2262         struct fcoe_kwqe_stat *req;
2263         struct fcoe_stat_ramrod_params *fcoe_stat;
2264         union l5cm_specific_data l5_data;
2265         struct cnic_local *cp = dev->cnic_priv;
2266         struct bnx2x *bp = netdev_priv(dev->netdev);
2267         int ret;
2268         u32 cid;
2269
2270         req = (struct fcoe_kwqe_stat *) kwqe;
2271         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2272
2273         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2274         if (!fcoe_stat)
2275                 return -ENOMEM;
2276
2277         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2278         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2279
2280         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2281                                   FCOE_CONNECTION_TYPE, &l5_data);
2282         return ret;
2283 }
2284
2285 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2286                                  u32 num, int *work)
2287 {
2288         int ret;
2289         struct cnic_local *cp = dev->cnic_priv;
2290         struct bnx2x *bp = netdev_priv(dev->netdev);
2291         u32 cid;
2292         struct fcoe_init_ramrod_params *fcoe_init;
2293         struct fcoe_kwqe_init1 *req1;
2294         struct fcoe_kwqe_init2 *req2;
2295         struct fcoe_kwqe_init3 *req3;
2296         union l5cm_specific_data l5_data;
2297
2298         if (num < 3) {
2299                 *work = num;
2300                 return -EINVAL;
2301         }
2302         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2303         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2304         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2305         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2306                 *work = 1;
2307                 return -EINVAL;
2308         }
2309         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2310                 *work = 2;
2311                 return -EINVAL;
2312         }
2313
2314         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2315                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2316                 return -ENOMEM;
2317         }
2318         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2319         if (!fcoe_init)
2320                 return -ENOMEM;
2321
2322         memset(fcoe_init, 0, sizeof(*fcoe_init));
2323         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2324         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2325         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2326         fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2327         fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2328         fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2329
2330         fcoe_init->sb_num = cp->status_blk_num;
2331         fcoe_init->eq_prod = MAX_KCQ_IDX;
2332         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2333         cp->kcq2.sw_prod_idx = 0;
2334
2335         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2336         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2337                                   FCOE_CONNECTION_TYPE, &l5_data);
2338         *work = 3;
2339         return ret;
2340 }
2341
2342 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2343                                  u32 num, int *work)
2344 {
2345         int ret = 0;
2346         u32 cid = -1, l5_cid;
2347         struct cnic_local *cp = dev->cnic_priv;
2348         struct bnx2x *bp = netdev_priv(dev->netdev);
2349         struct fcoe_kwqe_conn_offload1 *req1;
2350         struct fcoe_kwqe_conn_offload2 *req2;
2351         struct fcoe_kwqe_conn_offload3 *req3;
2352         struct fcoe_kwqe_conn_offload4 *req4;
2353         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2354         struct cnic_context *ctx;
2355         struct fcoe_context *fctx;
2356         struct regpair ctx_addr;
2357         union l5cm_specific_data l5_data;
2358         struct fcoe_kcqe kcqe;
2359         struct kcqe *cqes[1];
2360
2361         if (num < 4) {
2362                 *work = num;
2363                 return -EINVAL;
2364         }
2365         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2366         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2367         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2368         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2369
2370         *work = 4;
2371
2372         l5_cid = req1->fcoe_conn_id;
2373         if (l5_cid >= dev->max_fcoe_conn)
2374                 goto err_reply;
2375
2376         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2377
2378         ctx = &cp->ctx_tbl[l5_cid];
2379         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2380                 goto err_reply;
2381
2382         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2383         if (ret) {
2384                 ret = 0;
2385                 goto err_reply;
2386         }
2387         cid = ctx->cid;
2388
2389         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2390         if (fctx) {
2391                 u32 hw_cid = BNX2X_HW_CID(bp, cid);
2392                 u32 val;
2393
2394                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2395                                              FCOE_CONNECTION_TYPE);
2396                 fctx->xstorm_ag_context.cdu_reserved = val;
2397                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2398                                              FCOE_CONNECTION_TYPE);
2399                 fctx->ustorm_ag_context.cdu_usage = val;
2400         }
2401         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2402                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2403                 goto err_reply;
2404         }
2405         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2406         if (!fcoe_offload)
2407                 goto err_reply;
2408
2409         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2410         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2411         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2412         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2413         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2414
2415         cid = BNX2X_HW_CID(bp, cid);
2416         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2417                                   FCOE_CONNECTION_TYPE, &l5_data);
2418         if (!ret)
2419                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2420
2421         return ret;
2422
2423 err_reply:
2424         if (cid != -1)
2425                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2426
2427         memset(&kcqe, 0, sizeof(kcqe));
2428         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2429         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2430         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2431
2432         cqes[0] = (struct kcqe *) &kcqe;
2433         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2434         return ret;
2435 }
2436
2437 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2438 {
2439         struct fcoe_kwqe_conn_enable_disable *req;
2440         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2441         union l5cm_specific_data l5_data;
2442         int ret;
2443         u32 cid, l5_cid;
2444         struct cnic_local *cp = dev->cnic_priv;
2445
2446         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2447         cid = req->context_id;
2448         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2449
2450         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2451                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2452                 return -ENOMEM;
2453         }
2454         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2455         if (!fcoe_enable)
2456                 return -ENOMEM;
2457
2458         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2459         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2460         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2461                                   FCOE_CONNECTION_TYPE, &l5_data);
2462         return ret;
2463 }
2464
2465 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2466 {
2467         struct fcoe_kwqe_conn_enable_disable *req;
2468         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2469         union l5cm_specific_data l5_data;
2470         int ret;
2471         u32 cid, l5_cid;
2472         struct cnic_local *cp = dev->cnic_priv;
2473
2474         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2475         cid = req->context_id;
2476         l5_cid = req->conn_id;
2477         if (l5_cid >= dev->max_fcoe_conn)
2478                 return -EINVAL;
2479
2480         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2481
2482         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2483                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2484                 return -ENOMEM;
2485         }
2486         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2487         if (!fcoe_disable)
2488                 return -ENOMEM;
2489
2490         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2491         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2492         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2493                                   FCOE_CONNECTION_TYPE, &l5_data);
2494         return ret;
2495 }
2496
2497 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2498 {
2499         struct fcoe_kwqe_conn_destroy *req;
2500         union l5cm_specific_data l5_data;
2501         int ret;
2502         u32 cid, l5_cid;
2503         struct cnic_local *cp = dev->cnic_priv;
2504         struct cnic_context *ctx;
2505         struct fcoe_kcqe kcqe;
2506         struct kcqe *cqes[1];
2507
2508         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2509         cid = req->context_id;
2510         l5_cid = req->conn_id;
2511         if (l5_cid >= dev->max_fcoe_conn)
2512                 return -EINVAL;
2513
2514         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2515
2516         ctx = &cp->ctx_tbl[l5_cid];
2517
2518         init_waitqueue_head(&ctx->waitq);
2519         ctx->wait_cond = 0;
2520
2521         memset(&kcqe, 0, sizeof(kcqe));
2522         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2523         memset(&l5_data, 0, sizeof(l5_data));
2524         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2525                                   FCOE_CONNECTION_TYPE, &l5_data);
2526         if (ret == 0) {
2527                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2528                 if (ctx->wait_cond)
2529                         kcqe.completion_status = 0;
2530         }
2531
2532         set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2533         queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2534
2535         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2536         kcqe.fcoe_conn_id = req->conn_id;
2537         kcqe.fcoe_conn_context_id = cid;
2538
2539         cqes[0] = (struct kcqe *) &kcqe;
2540         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2541         return ret;
2542 }
2543
2544 static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2545 {
2546         struct cnic_local *cp = dev->cnic_priv;
2547         u32 i;
2548
2549         for (i = start_cid; i < cp->max_cid_space; i++) {
2550                 struct cnic_context *ctx = &cp->ctx_tbl[i];
2551                 int j;
2552
2553                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2554                         msleep(10);
2555
2556                 for (j = 0; j < 5; j++) {
2557                         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2558                                 break;
2559                         msleep(20);
2560                 }
2561
2562                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2563                         netdev_warn(dev->netdev, "CID %x not deleted\n",
2564                                    ctx->cid);
2565         }
2566 }
2567
2568 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2569 {
2570         union l5cm_specific_data l5_data;
2571         struct cnic_local *cp = dev->cnic_priv;
2572         struct bnx2x *bp = netdev_priv(dev->netdev);
2573         int ret;
2574         u32 cid;
2575
2576         cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2577
2578         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2579
2580         memset(&l5_data, 0, sizeof(l5_data));
2581         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2582                                   FCOE_CONNECTION_TYPE, &l5_data);
2583         return ret;
2584 }
2585
2586 static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2587 {
2588         struct cnic_local *cp = dev->cnic_priv;
2589         struct kcqe kcqe;
2590         struct kcqe *cqes[1];
2591         u32 cid;
2592         u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2593         u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2594         u32 kcqe_op;
2595         int ulp_type;
2596
2597         cid = kwqe->kwqe_info0;
2598         memset(&kcqe, 0, sizeof(kcqe));
2599
2600         if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2601                 u32 l5_cid = 0;
2602
2603                 ulp_type = CNIC_ULP_FCOE;
2604                 if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2605                         struct fcoe_kwqe_conn_enable_disable *req;
2606
2607                         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2608                         kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2609                         cid = req->context_id;
2610                         l5_cid = req->conn_id;
2611                 } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2612                         kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2613                 } else {
2614                         return;
2615                 }
2616                 kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2617                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2618                 kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2619                 kcqe.kcqe_info2 = cid;
2620                 kcqe.kcqe_info0 = l5_cid;
2621
2622         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2623                 ulp_type = CNIC_ULP_ISCSI;
2624                 if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2625                         cid = kwqe->kwqe_info1;
2626
2627                 kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2628                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2629                 kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2630                 kcqe.kcqe_info2 = cid;
2631                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2632
2633         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2634                 struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2635
2636                 ulp_type = CNIC_ULP_L4;
2637                 if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2638                         kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2639                 else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2640                         kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2641                 else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2642                         kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2643                 else
2644                         return;
2645
2646                 kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2647                                     KCQE_FLAGS_LAYER_MASK_L4;
2648                 l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2649                 l4kcqe->cid = cid;
2650                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2651         } else {
2652                 return;
2653         }
2654
2655         cqes[0] = &kcqe;
2656         cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2657 }
2658
2659 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2660                                          struct kwqe *wqes[], u32 num_wqes)
2661 {
2662         int i, work, ret;
2663         u32 opcode;
2664         struct kwqe *kwqe;
2665
2666         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2667                 return -EAGAIN;         /* bnx2 is down */
2668
2669         for (i = 0; i < num_wqes; ) {
2670                 kwqe = wqes[i];
2671                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2672                 work = 1;
2673
2674                 switch (opcode) {
2675                 case ISCSI_KWQE_OPCODE_INIT1:
2676                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2677                         break;
2678                 case ISCSI_KWQE_OPCODE_INIT2:
2679                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2680                         break;
2681                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2682                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2683                                                      num_wqes - i, &work);
2684                         break;
2685                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2686                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2687                         break;
2688                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2689                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2690                         break;
2691                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2692                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2693                                                  &work);
2694                         break;
2695                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2696                         ret = cnic_bnx2x_close(dev, kwqe);
2697                         break;
2698                 case L4_KWQE_OPCODE_VALUE_RESET:
2699                         ret = cnic_bnx2x_reset(dev, kwqe);
2700                         break;
2701                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2702                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2703                         break;
2704                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2705                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2706                         break;
2707                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2708                         ret = 0;
2709                         break;
2710                 default:
2711                         ret = 0;
2712                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2713                                    opcode);
2714                         break;
2715                 }
2716                 if (ret < 0) {
2717                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2718                                    opcode);
2719
2720                         /* Possibly bnx2x parity error, send completion
2721                          * to ulp drivers with error code to speed up
2722                          * cleanup and reset recovery.
2723                          */
2724                         if (ret == -EIO || ret == -EAGAIN)
2725                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2726                 }
2727                 i += work;
2728         }
2729         return 0;
2730 }
2731
2732 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2733                                         struct kwqe *wqes[], u32 num_wqes)
2734 {
2735         struct bnx2x *bp = netdev_priv(dev->netdev);
2736         int i, work, ret;
2737         u32 opcode;
2738         struct kwqe *kwqe;
2739
2740         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2741                 return -EAGAIN;         /* bnx2 is down */
2742
2743         if (!BNX2X_CHIP_IS_E2_PLUS(bp))
2744                 return -EINVAL;
2745
2746         for (i = 0; i < num_wqes; ) {
2747                 kwqe = wqes[i];
2748                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2749                 work = 1;
2750
2751                 switch (opcode) {
2752                 case FCOE_KWQE_OPCODE_INIT1:
2753                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2754                                                     num_wqes - i, &work);
2755                         break;
2756                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2757                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2758                                                     num_wqes - i, &work);
2759                         break;
2760                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2761                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2762                         break;
2763                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2764                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2765                         break;
2766                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2767                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2768                         break;
2769                 case FCOE_KWQE_OPCODE_DESTROY:
2770                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2771                         break;
2772                 case FCOE_KWQE_OPCODE_STAT:
2773                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2774                         break;
2775                 default:
2776                         ret = 0;
2777                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2778                                    opcode);
2779                         break;
2780                 }
2781                 if (ret < 0) {
2782                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2783                                    opcode);
2784
2785                         /* Possibly bnx2x parity error, send completion
2786                          * to ulp drivers with error code to speed up
2787                          * cleanup and reset recovery.
2788                          */
2789                         if (ret == -EIO || ret == -EAGAIN)
2790                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2791                 }
2792                 i += work;
2793         }
2794         return 0;
2795 }
2796
2797 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2798                                    u32 num_wqes)
2799 {
2800         int ret = -EINVAL;
2801         u32 layer_code;
2802
2803         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2804                 return -EAGAIN;         /* bnx2x is down */
2805
2806         if (!num_wqes)
2807                 return 0;
2808
2809         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2810         switch (layer_code) {
2811         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2812         case KWQE_FLAGS_LAYER_MASK_L4:
2813         case KWQE_FLAGS_LAYER_MASK_L2:
2814                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2815                 break;
2816
2817         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2818                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2819                 break;
2820         }
2821         return ret;
2822 }
2823
2824 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2825 {
2826         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2827                 return KCQE_FLAGS_LAYER_MASK_L4;
2828
2829         return opflag & KCQE_FLAGS_LAYER_MASK;
2830 }
2831
2832 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2833 {
2834         struct cnic_local *cp = dev->cnic_priv;
2835         int i, j, comp = 0;
2836
2837         i = 0;
2838         j = 1;
2839         while (num_cqes) {
2840                 struct cnic_ulp_ops *ulp_ops;
2841                 int ulp_type;
2842                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2843                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2844
2845                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2846                         comp++;
2847
2848                 while (j < num_cqes) {
2849                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2850
2851                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2852                                 break;
2853
2854                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2855                                 comp++;
2856                         j++;
2857                 }
2858
2859                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2860                         ulp_type = CNIC_ULP_RDMA;
2861                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2862                         ulp_type = CNIC_ULP_ISCSI;
2863                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2864                         ulp_type = CNIC_ULP_FCOE;
2865                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2866                         ulp_type = CNIC_ULP_L4;
2867                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2868                         goto end;
2869                 else {
2870                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2871                                    kcqe_op_flag);
2872                         goto end;
2873                 }
2874
2875                 rcu_read_lock();
2876                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2877                 if (likely(ulp_ops)) {
2878                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2879                                                   cp->completed_kcq + i, j);
2880                 }
2881                 rcu_read_unlock();
2882 end:
2883                 num_cqes -= j;
2884                 i += j;
2885                 j = 1;
2886         }
2887         if (unlikely(comp))
2888                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2889 }
2890
2891 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2892 {
2893         struct cnic_local *cp = dev->cnic_priv;
2894         u16 i, ri, hw_prod, last;
2895         struct kcqe *kcqe;
2896         int kcqe_cnt = 0, last_cnt = 0;
2897
2898         i = ri = last = info->sw_prod_idx;
2899         ri &= MAX_KCQ_IDX;
2900         hw_prod = *info->hw_prod_idx_ptr;
2901         hw_prod = info->hw_idx(hw_prod);
2902
2903         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2904                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2905                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2906                 i = info->next_idx(i);
2907                 ri = i & MAX_KCQ_IDX;
2908                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2909                         last_cnt = kcqe_cnt;
2910                         last = i;
2911                 }
2912         }
2913
2914         info->sw_prod_idx = last;
2915         return last_cnt;
2916 }
2917
2918 static int cnic_l2_completion(struct cnic_local *cp)
2919 {
2920         u16 hw_cons, sw_cons;
2921         struct cnic_uio_dev *udev = cp->udev;
2922         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2923                                         (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
2924         u32 cmd;
2925         int comp = 0;
2926
2927         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2928                 return 0;
2929
2930         hw_cons = *cp->rx_cons_ptr;
2931         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2932                 hw_cons++;
2933
2934         sw_cons = cp->rx_cons;
2935         while (sw_cons != hw_cons) {
2936                 u8 cqe_fp_flags;
2937
2938                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2939                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2940                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2941                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2942                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2943                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2944                             cmd == RAMROD_CMD_ID_ETH_HALT)
2945                                 comp++;
2946                 }
2947                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2948         }
2949         return comp;
2950 }
2951
2952 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2953 {
2954         u16 rx_cons, tx_cons;
2955         int comp = 0;
2956
2957         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2958                 return;
2959
2960         rx_cons = *cp->rx_cons_ptr;
2961         tx_cons = *cp->tx_cons_ptr;
2962         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2963                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2964                         comp = cnic_l2_completion(cp);
2965
2966                 cp->tx_cons = tx_cons;
2967                 cp->rx_cons = rx_cons;
2968
2969                 if (cp->udev)
2970                         uio_event_notify(&cp->udev->cnic_uinfo);
2971         }
2972         if (comp)
2973                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2974 }
2975
2976 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2977 {
2978         struct cnic_local *cp = dev->cnic_priv;
2979         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2980         int kcqe_cnt;
2981
2982         /* status block index must be read before reading other fields */
2983         rmb();
2984         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2985
2986         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2987
2988                 service_kcqes(dev, kcqe_cnt);
2989
2990                 /* Tell compiler that status_blk fields can change. */
2991                 barrier();
2992                 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2993                 /* status block index must be read first */
2994                 rmb();
2995                 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2996         }
2997
2998         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2999
3000         cnic_chk_pkt_rings(cp);
3001
3002         return status_idx;
3003 }
3004
3005 static int cnic_service_bnx2(void *data, void *status_blk)
3006 {
3007         struct cnic_dev *dev = data;
3008
3009         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3010                 struct status_block *sblk = status_blk;
3011
3012                 return sblk->status_idx;
3013         }
3014
3015         return cnic_service_bnx2_queues(dev);
3016 }
3017
3018 static void cnic_service_bnx2_msix(struct tasklet_struct *t)
3019 {
3020         struct cnic_local *cp = from_tasklet(cp, t, cnic_irq_task);
3021         struct cnic_dev *dev = cp->dev;
3022
3023         cp->last_status_idx = cnic_service_bnx2_queues(dev);
3024
3025         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3026                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3027 }
3028
3029 static void cnic_doirq(struct cnic_dev *dev)
3030 {
3031         struct cnic_local *cp = dev->cnic_priv;
3032
3033         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3034                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
3035
3036                 prefetch(cp->status_blk.gen);
3037                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
3038
3039                 tasklet_schedule(&cp->cnic_irq_task);
3040         }
3041 }
3042
3043 static irqreturn_t cnic_irq(int irq, void *dev_instance)
3044 {
3045         struct cnic_dev *dev = dev_instance;
3046         struct cnic_local *cp = dev->cnic_priv;
3047
3048         if (cp->ack_int)
3049                 cp->ack_int(dev);
3050
3051         cnic_doirq(dev);
3052
3053         return IRQ_HANDLED;
3054 }
3055
3056 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
3057                                       u16 index, u8 op, u8 update)
3058 {
3059         struct bnx2x *bp = netdev_priv(dev->netdev);
3060         u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp) * 32 +
3061                        COMMAND_REG_INT_ACK);
3062         struct igu_ack_register igu_ack;
3063
3064         igu_ack.status_block_index = index;
3065         igu_ack.sb_id_and_flags =
3066                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
3067                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3068                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3069                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3070
3071         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3072 }
3073
3074 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3075                             u16 index, u8 op, u8 update)
3076 {
3077         struct igu_regular cmd_data;
3078         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3079
3080         cmd_data.sb_id_and_flags =
3081                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3082                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3083                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
3084                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3085
3086
3087         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3088 }
3089
3090 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3091 {
3092         struct cnic_local *cp = dev->cnic_priv;
3093
3094         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3095                            IGU_INT_DISABLE, 0);
3096 }
3097
3098 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3099 {
3100         struct cnic_local *cp = dev->cnic_priv;
3101
3102         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3103                         IGU_INT_DISABLE, 0);
3104 }
3105
3106 static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
3107 {
3108         struct cnic_local *cp = dev->cnic_priv;
3109
3110         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
3111                            IGU_INT_ENABLE, 1);
3112 }
3113
3114 static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
3115 {
3116         struct cnic_local *cp = dev->cnic_priv;
3117
3118         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
3119                         IGU_INT_ENABLE, 1);
3120 }
3121
3122 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3123 {
3124         u32 last_status = *info->status_idx_ptr;
3125         int kcqe_cnt;
3126
3127         /* status block index must be read before reading the KCQ */
3128         rmb();
3129         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3130
3131                 service_kcqes(dev, kcqe_cnt);
3132
3133                 /* Tell compiler that sblk fields can change. */
3134                 barrier();
3135
3136                 last_status = *info->status_idx_ptr;
3137                 /* status block index must be read before reading the KCQ */
3138                 rmb();
3139         }
3140         return last_status;
3141 }
3142
3143 static void cnic_service_bnx2x_bh(struct tasklet_struct *t)
3144 {
3145         struct cnic_local *cp = from_tasklet(cp, t, cnic_irq_task);
3146         struct cnic_dev *dev = cp->dev;
3147         struct bnx2x *bp = netdev_priv(dev->netdev);
3148         u32 status_idx, new_status_idx;
3149
3150         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3151                 return;
3152
3153         while (1) {
3154                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3155
3156                 CNIC_WR16(dev, cp->kcq1.io_addr,
3157                           cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3158
3159                 if (!CNIC_SUPPORTS_FCOE(bp)) {
3160                         cp->arm_int(dev, status_idx);
3161                         break;
3162                 }
3163
3164                 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3165
3166                 if (new_status_idx != status_idx)
3167                         continue;
3168
3169                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3170                           MAX_KCQ_IDX);
3171
3172                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3173                                 status_idx, IGU_INT_ENABLE, 1);
3174
3175                 break;
3176         }
3177 }
3178
3179 static int cnic_service_bnx2x(void *data, void *status_blk)
3180 {
3181         struct cnic_dev *dev = data;
3182         struct cnic_local *cp = dev->cnic_priv;
3183
3184         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3185                 cnic_doirq(dev);
3186
3187         cnic_chk_pkt_rings(cp);
3188
3189         return 0;
3190 }
3191
3192 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3193 {
3194         struct cnic_ulp_ops *ulp_ops;
3195
3196         if (if_type == CNIC_ULP_ISCSI)
3197                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3198
3199         mutex_lock(&cnic_lock);
3200         ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3201                                             lockdep_is_held(&cnic_lock));
3202         if (!ulp_ops) {
3203                 mutex_unlock(&cnic_lock);
3204                 return;
3205         }
3206         set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3207         mutex_unlock(&cnic_lock);
3208
3209         if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3210                 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3211
3212         clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3213 }
3214
3215 static void cnic_ulp_stop(struct cnic_dev *dev)
3216 {
3217         struct cnic_local *cp = dev->cnic_priv;
3218         int if_type;
3219
3220         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3221                 cnic_ulp_stop_one(cp, if_type);
3222 }
3223
3224 static void cnic_ulp_start(struct cnic_dev *dev)
3225 {
3226         struct cnic_local *cp = dev->cnic_priv;
3227         int if_type;
3228
3229         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3230                 struct cnic_ulp_ops *ulp_ops;
3231
3232                 mutex_lock(&cnic_lock);
3233                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3234                                                     lockdep_is_held(&cnic_lock));
3235                 if (!ulp_ops || !ulp_ops->cnic_start) {
3236                         mutex_unlock(&cnic_lock);
3237                         continue;
3238                 }
3239                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3240                 mutex_unlock(&cnic_lock);
3241
3242                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3243                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3244
3245                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3246         }
3247 }
3248
3249 static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3250 {
3251         struct cnic_local *cp = dev->cnic_priv;
3252         struct cnic_ulp_ops *ulp_ops;
3253         int rc;
3254
3255         mutex_lock(&cnic_lock);
3256         ulp_ops = rcu_dereference_protected(cp->ulp_ops[ulp_type],
3257                                             lockdep_is_held(&cnic_lock));
3258         if (ulp_ops && ulp_ops->cnic_get_stats)
3259                 rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3260         else
3261                 rc = -ENODEV;
3262         mutex_unlock(&cnic_lock);
3263         return rc;
3264 }
3265
3266 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3267 {
3268         struct cnic_dev *dev = data;
3269         int ulp_type = CNIC_ULP_ISCSI;
3270
3271         switch (info->cmd) {
3272         case CNIC_CTL_STOP_CMD:
3273                 cnic_hold(dev);
3274
3275                 cnic_ulp_stop(dev);
3276                 cnic_stop_hw(dev);
3277
3278                 cnic_put(dev);
3279                 break;
3280         case CNIC_CTL_START_CMD:
3281                 cnic_hold(dev);
3282
3283                 if (!cnic_start_hw(dev))
3284                         cnic_ulp_start(dev);
3285
3286                 cnic_put(dev);
3287                 break;
3288         case CNIC_CTL_STOP_ISCSI_CMD: {
3289                 struct cnic_local *cp = dev->cnic_priv;
3290                 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3291                 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3292                 break;
3293         }
3294         case CNIC_CTL_COMPLETION_CMD: {
3295                 struct cnic_ctl_completion *comp = &info->data.comp;
3296                 u32 cid = BNX2X_SW_CID(comp->cid);
3297                 u32 l5_cid;
3298                 struct cnic_local *cp = dev->cnic_priv;
3299
3300                 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
3301                         break;
3302
3303                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3304                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3305
3306                         if (unlikely(comp->error)) {
3307                                 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3308                                 netdev_err(dev->netdev,
3309                                            "CID %x CFC delete comp error %x\n",
3310                                            cid, comp->error);
3311                         }
3312
3313                         ctx->wait_cond = 1;
3314                         wake_up(&ctx->waitq);
3315                 }
3316                 break;
3317         }
3318         case CNIC_CTL_FCOE_STATS_GET_CMD:
3319                 ulp_type = CNIC_ULP_FCOE;
3320                 fallthrough;
3321         case CNIC_CTL_ISCSI_STATS_GET_CMD:
3322                 cnic_hold(dev);
3323                 cnic_copy_ulp_stats(dev, ulp_type);
3324                 cnic_put(dev);
3325                 break;
3326
3327         default:
3328                 return -EINVAL;
3329         }
3330         return 0;
3331 }
3332
3333 static void cnic_ulp_init(struct cnic_dev *dev)
3334 {
3335         int i;
3336         struct cnic_local *cp = dev->cnic_priv;
3337
3338         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3339                 struct cnic_ulp_ops *ulp_ops;
3340
3341                 mutex_lock(&cnic_lock);
3342                 ulp_ops = cnic_ulp_tbl_prot(i);
3343                 if (!ulp_ops || !ulp_ops->cnic_init) {
3344                         mutex_unlock(&cnic_lock);
3345                         continue;
3346                 }
3347                 ulp_get(ulp_ops);
3348                 mutex_unlock(&cnic_lock);
3349
3350                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3351                         ulp_ops->cnic_init(dev);
3352
3353                 ulp_put(ulp_ops);
3354         }
3355 }
3356
3357 static void cnic_ulp_exit(struct cnic_dev *dev)
3358 {
3359         int i;
3360         struct cnic_local *cp = dev->cnic_priv;
3361
3362         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3363                 struct cnic_ulp_ops *ulp_ops;
3364
3365                 mutex_lock(&cnic_lock);
3366                 ulp_ops = cnic_ulp_tbl_prot(i);
3367                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3368                         mutex_unlock(&cnic_lock);
3369                         continue;
3370                 }
3371                 ulp_get(ulp_ops);
3372                 mutex_unlock(&cnic_lock);
3373
3374                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3375                         ulp_ops->cnic_exit(dev);
3376
3377                 ulp_put(ulp_ops);
3378         }
3379 }
3380
3381 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3382 {
3383         struct cnic_dev *dev = csk->dev;
3384         struct l4_kwq_offload_pg *l4kwqe;
3385         struct kwqe *wqes[1];
3386
3387         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3388         memset(l4kwqe, 0, sizeof(*l4kwqe));
3389         wqes[0] = (struct kwqe *) l4kwqe;
3390
3391         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3392         l4kwqe->flags =
3393                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3394         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3395
3396         l4kwqe->da0 = csk->ha[0];
3397         l4kwqe->da1 = csk->ha[1];
3398         l4kwqe->da2 = csk->ha[2];
3399         l4kwqe->da3 = csk->ha[3];
3400         l4kwqe->da4 = csk->ha[4];
3401         l4kwqe->da5 = csk->ha[5];
3402
3403         l4kwqe->sa0 = dev->mac_addr[0];
3404         l4kwqe->sa1 = dev->mac_addr[1];
3405         l4kwqe->sa2 = dev->mac_addr[2];
3406         l4kwqe->sa3 = dev->mac_addr[3];
3407         l4kwqe->sa4 = dev->mac_addr[4];
3408         l4kwqe->sa5 = dev->mac_addr[5];
3409
3410         l4kwqe->etype = ETH_P_IP;
3411         l4kwqe->ipid_start = DEF_IPID_START;
3412         l4kwqe->host_opaque = csk->l5_cid;
3413
3414         if (csk->vlan_id) {
3415                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3416                 l4kwqe->vlan_tag = csk->vlan_id;
3417                 l4kwqe->l2hdr_nbytes += 4;
3418         }
3419
3420         return dev->submit_kwqes(dev, wqes, 1);
3421 }
3422
3423 static int cnic_cm_update_pg(struct cnic_sock *csk)
3424 {
3425         struct cnic_dev *dev = csk->dev;
3426         struct l4_kwq_update_pg *l4kwqe;
3427         struct kwqe *wqes[1];
3428
3429         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3430         memset(l4kwqe, 0, sizeof(*l4kwqe));
3431         wqes[0] = (struct kwqe *) l4kwqe;
3432
3433         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3434         l4kwqe->flags =
3435                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3436         l4kwqe->pg_cid = csk->pg_cid;
3437
3438         l4kwqe->da0 = csk->ha[0];
3439         l4kwqe->da1 = csk->ha[1];
3440         l4kwqe->da2 = csk->ha[2];
3441         l4kwqe->da3 = csk->ha[3];
3442         l4kwqe->da4 = csk->ha[4];
3443         l4kwqe->da5 = csk->ha[5];
3444
3445         l4kwqe->pg_host_opaque = csk->l5_cid;
3446         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3447
3448         return dev->submit_kwqes(dev, wqes, 1);
3449 }
3450
3451 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3452 {
3453         struct cnic_dev *dev = csk->dev;
3454         struct l4_kwq_upload *l4kwqe;
3455         struct kwqe *wqes[1];
3456
3457         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3458         memset(l4kwqe, 0, sizeof(*l4kwqe));
3459         wqes[0] = (struct kwqe *) l4kwqe;
3460
3461         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3462         l4kwqe->flags =
3463                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3464         l4kwqe->cid = csk->pg_cid;
3465
3466         return dev->submit_kwqes(dev, wqes, 1);
3467 }
3468
3469 static int cnic_cm_conn_req(struct cnic_sock *csk)
3470 {
3471         struct cnic_dev *dev = csk->dev;
3472         struct l4_kwq_connect_req1 *l4kwqe1;
3473         struct l4_kwq_connect_req2 *l4kwqe2;
3474         struct l4_kwq_connect_req3 *l4kwqe3;
3475         struct kwqe *wqes[3];
3476         u8 tcp_flags = 0;
3477         int num_wqes = 2;
3478
3479         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3480         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3481         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3482         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3483         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3484         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3485
3486         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3487         l4kwqe3->flags =
3488                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3489         l4kwqe3->ka_timeout = csk->ka_timeout;
3490         l4kwqe3->ka_interval = csk->ka_interval;
3491         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3492         l4kwqe3->tos = csk->tos;
3493         l4kwqe3->ttl = csk->ttl;
3494         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3495         l4kwqe3->pmtu = csk->mtu;
3496         l4kwqe3->rcv_buf = csk->rcv_buf;
3497         l4kwqe3->snd_buf = csk->snd_buf;
3498         l4kwqe3->seed = csk->seed;
3499
3500         wqes[0] = (struct kwqe *) l4kwqe1;
3501         if (test_bit(SK_F_IPV6, &csk->flags)) {
3502                 wqes[1] = (struct kwqe *) l4kwqe2;
3503                 wqes[2] = (struct kwqe *) l4kwqe3;
3504                 num_wqes = 3;
3505
3506                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3507                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3508                 l4kwqe2->flags =
3509                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3510                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3511                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3512                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3513                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3514                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3515                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3516                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3517                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3518                                sizeof(struct tcphdr);
3519         } else {
3520                 wqes[1] = (struct kwqe *) l4kwqe3;
3521                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3522                                sizeof(struct tcphdr);
3523         }
3524
3525         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3526         l4kwqe1->flags =
3527                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3528                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3529         l4kwqe1->cid = csk->cid;
3530         l4kwqe1->pg_cid = csk->pg_cid;
3531         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3532         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3533         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3534         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3535         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3536                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3537         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3538                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3539         if (csk->tcp_flags & SK_TCP_NAGLE)
3540                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3541         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3542                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3543         if (csk->tcp_flags & SK_TCP_SACK)
3544                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3545         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3546                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3547
3548         l4kwqe1->tcp_flags = tcp_flags;
3549
3550         return dev->submit_kwqes(dev, wqes, num_wqes);
3551 }
3552
3553 static int cnic_cm_close_req(struct cnic_sock *csk)
3554 {
3555         struct cnic_dev *dev = csk->dev;
3556         struct l4_kwq_close_req *l4kwqe;
3557         struct kwqe *wqes[1];
3558
3559         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3560         memset(l4kwqe, 0, sizeof(*l4kwqe));
3561         wqes[0] = (struct kwqe *) l4kwqe;
3562
3563         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3564         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3565         l4kwqe->cid = csk->cid;
3566
3567         return dev->submit_kwqes(dev, wqes, 1);
3568 }
3569
3570 static int cnic_cm_abort_req(struct cnic_sock *csk)
3571 {
3572         struct cnic_dev *dev = csk->dev;
3573         struct l4_kwq_reset_req *l4kwqe;
3574         struct kwqe *wqes[1];
3575
3576         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3577         memset(l4kwqe, 0, sizeof(*l4kwqe));
3578         wqes[0] = (struct kwqe *) l4kwqe;
3579
3580         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3581         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3582         l4kwqe->cid = csk->cid;
3583
3584         return dev->submit_kwqes(dev, wqes, 1);
3585 }
3586
3587 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3588                           u32 l5_cid, struct cnic_sock **csk, void *context)
3589 {
3590         struct cnic_local *cp = dev->cnic_priv;
3591         struct cnic_sock *csk1;
3592
3593         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3594                 return -EINVAL;
3595
3596         if (cp->ctx_tbl) {
3597                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3598
3599                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3600                         return -EAGAIN;
3601         }
3602
3603         csk1 = &cp->csk_tbl[l5_cid];
3604         if (atomic_read(&csk1->ref_count))
3605                 return -EAGAIN;
3606
3607         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3608                 return -EBUSY;
3609
3610         csk1->dev = dev;
3611         csk1->cid = cid;
3612         csk1->l5_cid = l5_cid;
3613         csk1->ulp_type = ulp_type;
3614         csk1->context = context;
3615
3616         csk1->ka_timeout = DEF_KA_TIMEOUT;
3617         csk1->ka_interval = DEF_KA_INTERVAL;
3618         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3619         csk1->tos = DEF_TOS;
3620         csk1->ttl = DEF_TTL;
3621         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3622         csk1->rcv_buf = DEF_RCV_BUF;
3623         csk1->snd_buf = DEF_SND_BUF;
3624         csk1->seed = DEF_SEED;
3625         csk1->tcp_flags = 0;
3626
3627         *csk = csk1;
3628         return 0;
3629 }
3630
3631 static void cnic_cm_cleanup(struct cnic_sock *csk)
3632 {
3633         if (csk->src_port) {
3634                 struct cnic_dev *dev = csk->dev;
3635                 struct cnic_local *cp = dev->cnic_priv;
3636
3637                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3638                 csk->src_port = 0;
3639         }
3640 }
3641
3642 static void cnic_close_conn(struct cnic_sock *csk)
3643 {
3644         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3645                 cnic_cm_upload_pg(csk);
3646                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3647         }
3648         cnic_cm_cleanup(csk);
3649 }
3650
3651 static int cnic_cm_destroy(struct cnic_sock *csk)
3652 {
3653         if (!cnic_in_use(csk))
3654                 return -EINVAL;
3655
3656         csk_hold(csk);
3657         clear_bit(SK_F_INUSE, &csk->flags);
3658         smp_mb__after_atomic();
3659         while (atomic_read(&csk->ref_count) != 1)
3660                 msleep(1);
3661         cnic_cm_cleanup(csk);
3662
3663         csk->flags = 0;
3664         csk_put(csk);
3665         return 0;
3666 }
3667
3668 static inline u16 cnic_get_vlan(struct net_device *dev,
3669                                 struct net_device **vlan_dev)
3670 {
3671         if (is_vlan_dev(dev)) {
3672                 *vlan_dev = vlan_dev_real_dev(dev);
3673                 return vlan_dev_vlan_id(dev);
3674         }
3675         *vlan_dev = dev;
3676         return 0;
3677 }
3678
3679 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3680                              struct dst_entry **dst)
3681 {
3682 #if defined(CONFIG_INET)
3683         struct rtable *rt;
3684
3685         rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3686         if (!IS_ERR(rt)) {
3687                 *dst = &rt->dst;
3688                 return 0;
3689         }
3690         return PTR_ERR(rt);
3691 #else
3692         return -ENETUNREACH;
3693 #endif
3694 }
3695
3696 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3697                              struct dst_entry **dst)
3698 {
3699 #if IS_ENABLED(CONFIG_IPV6)
3700         struct flowi6 fl6;
3701
3702         memset(&fl6, 0, sizeof(fl6));
3703         fl6.daddr = dst_addr->sin6_addr;
3704         if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3705                 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3706
3707         *dst = ip6_route_output(&init_net, NULL, &fl6);
3708         if ((*dst)->error) {
3709                 dst_release(*dst);
3710                 *dst = NULL;
3711                 return -ENETUNREACH;
3712         } else
3713                 return 0;
3714 #endif
3715
3716         return -ENETUNREACH;
3717 }
3718
3719 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3720                                            int ulp_type)
3721 {
3722         struct cnic_dev *dev = NULL;
3723         struct dst_entry *dst;
3724         struct net_device *netdev = NULL;
3725         int err = -ENETUNREACH;
3726
3727         if (dst_addr->sin_family == AF_INET)
3728                 err = cnic_get_v4_route(dst_addr, &dst);
3729         else if (dst_addr->sin_family == AF_INET6) {
3730                 struct sockaddr_in6 *dst_addr6 =
3731                         (struct sockaddr_in6 *) dst_addr;
3732
3733                 err = cnic_get_v6_route(dst_addr6, &dst);
3734         } else
3735                 return NULL;
3736
3737         if (err)
3738                 return NULL;
3739
3740         if (!dst->dev)
3741                 goto done;
3742
3743         cnic_get_vlan(dst->dev, &netdev);
3744
3745         dev = cnic_from_netdev(netdev);
3746
3747 done:
3748         dst_release(dst);
3749         if (dev)
3750                 cnic_put(dev);
3751         return dev;
3752 }
3753
3754 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3755 {
3756         struct cnic_dev *dev = csk->dev;
3757         struct cnic_local *cp = dev->cnic_priv;
3758
3759         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3760 }
3761
3762 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3763 {
3764         struct cnic_dev *dev = csk->dev;
3765         struct cnic_local *cp = dev->cnic_priv;
3766         int is_v6, rc = 0;
3767         struct dst_entry *dst = NULL;
3768         struct net_device *realdev;
3769         __be16 local_port;
3770         u32 port_id;
3771
3772         if (saddr->local.v6.sin6_family == AF_INET6 &&
3773             saddr->remote.v6.sin6_family == AF_INET6)
3774                 is_v6 = 1;
3775         else if (saddr->local.v4.sin_family == AF_INET &&
3776                  saddr->remote.v4.sin_family == AF_INET)
3777                 is_v6 = 0;
3778         else
3779                 return -EINVAL;
3780
3781         clear_bit(SK_F_IPV6, &csk->flags);
3782
3783         if (is_v6) {
3784                 set_bit(SK_F_IPV6, &csk->flags);
3785                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3786
3787                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3788                        sizeof(struct in6_addr));
3789                 csk->dst_port = saddr->remote.v6.sin6_port;
3790                 local_port = saddr->local.v6.sin6_port;
3791
3792         } else {
3793                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3794
3795                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3796                 csk->dst_port = saddr->remote.v4.sin_port;
3797                 local_port = saddr->local.v4.sin_port;
3798         }
3799
3800         csk->vlan_id = 0;
3801         csk->mtu = dev->netdev->mtu;
3802         if (dst && dst->dev) {
3803                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3804                 if (realdev == dev->netdev) {
3805                         csk->vlan_id = vlan;
3806                         csk->mtu = dst_mtu(dst);
3807                 }
3808         }
3809
3810         port_id = be16_to_cpu(local_port);
3811         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3812             port_id < CNIC_LOCAL_PORT_MAX) {
3813                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3814                         port_id = 0;
3815         } else
3816                 port_id = 0;
3817
3818         if (!port_id) {
3819                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3820                 if (port_id == -1) {
3821                         rc = -ENOMEM;
3822                         goto err_out;
3823                 }
3824                 local_port = cpu_to_be16(port_id);
3825         }
3826         csk->src_port = local_port;
3827
3828 err_out:
3829         dst_release(dst);
3830         return rc;
3831 }
3832
3833 static void cnic_init_csk_state(struct cnic_sock *csk)
3834 {
3835         csk->state = 0;
3836         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3837         clear_bit(SK_F_CLOSING, &csk->flags);
3838 }
3839
3840 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3841 {
3842         struct cnic_local *cp = csk->dev->cnic_priv;
3843         int err = 0;
3844
3845         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3846                 return -EOPNOTSUPP;
3847
3848         if (!cnic_in_use(csk))
3849                 return -EINVAL;
3850
3851         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3852                 return -EINVAL;
3853
3854         cnic_init_csk_state(csk);
3855
3856         err = cnic_get_route(csk, saddr);
3857         if (err)
3858                 goto err_out;
3859
3860         err = cnic_resolve_addr(csk, saddr);
3861         if (!err)
3862                 return 0;
3863
3864 err_out:
3865         clear_bit(SK_F_CONNECT_START, &csk->flags);
3866         return err;
3867 }
3868
3869 static int cnic_cm_abort(struct cnic_sock *csk)
3870 {
3871         struct cnic_local *cp = csk->dev->cnic_priv;
3872         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3873
3874         if (!cnic_in_use(csk))
3875                 return -EINVAL;
3876
3877         if (cnic_abort_prep(csk))
3878                 return cnic_cm_abort_req(csk);
3879
3880         /* Getting here means that we haven't started connect, or
3881          * connect was not successful, or it has been reset by the target.
3882          */
3883
3884         cp->close_conn(csk, opcode);
3885         if (csk->state != opcode) {
3886                 /* Wait for remote reset sequence to complete */
3887                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3888                         msleep(1);
3889
3890                 return -EALREADY;
3891         }
3892
3893         return 0;
3894 }
3895
3896 static int cnic_cm_close(struct cnic_sock *csk)
3897 {
3898         if (!cnic_in_use(csk))
3899                 return -EINVAL;
3900
3901         if (cnic_close_prep(csk)) {
3902                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3903                 return cnic_cm_close_req(csk);
3904         } else {
3905                 /* Wait for remote reset sequence to complete */
3906                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3907                         msleep(1);
3908
3909                 return -EALREADY;
3910         }
3911         return 0;
3912 }
3913
3914 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3915                            u8 opcode)
3916 {
3917         struct cnic_ulp_ops *ulp_ops;
3918         int ulp_type = csk->ulp_type;
3919
3920         rcu_read_lock();
3921         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3922         if (ulp_ops) {
3923                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3924                         ulp_ops->cm_connect_complete(csk);
3925                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3926                         ulp_ops->cm_close_complete(csk);
3927                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3928                         ulp_ops->cm_remote_abort(csk);
3929                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3930                         ulp_ops->cm_abort_complete(csk);
3931                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3932                         ulp_ops->cm_remote_close(csk);
3933         }
3934         rcu_read_unlock();
3935 }
3936
3937 static int cnic_cm_set_pg(struct cnic_sock *csk)
3938 {
3939         if (cnic_offld_prep(csk)) {
3940                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3941                         cnic_cm_update_pg(csk);
3942                 else
3943                         cnic_cm_offload_pg(csk);
3944         }
3945         return 0;
3946 }
3947
3948 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3949 {
3950         struct cnic_local *cp = dev->cnic_priv;
3951         u32 l5_cid = kcqe->pg_host_opaque;
3952         u8 opcode = kcqe->op_code;
3953         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3954
3955         csk_hold(csk);
3956         if (!cnic_in_use(csk))
3957                 goto done;
3958
3959         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3960                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3961                 goto done;
3962         }
3963         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3964         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3965                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3966                 cnic_cm_upcall(cp, csk,
3967                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3968                 goto done;
3969         }
3970
3971         csk->pg_cid = kcqe->pg_cid;
3972         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3973         cnic_cm_conn_req(csk);
3974
3975 done:
3976         csk_put(csk);
3977 }
3978
3979 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3980 {
3981         struct cnic_local *cp = dev->cnic_priv;
3982         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3983         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3984         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3985
3986         ctx->timestamp = jiffies;
3987         ctx->wait_cond = 1;
3988         wake_up(&ctx->waitq);
3989 }
3990
3991 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3992 {
3993         struct cnic_local *cp = dev->cnic_priv;
3994         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3995         u8 opcode = l4kcqe->op_code;
3996         u32 l5_cid;
3997         struct cnic_sock *csk;
3998
3999         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
4000                 cnic_process_fcoe_term_conn(dev, kcqe);
4001                 return;
4002         }
4003         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
4004             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
4005                 cnic_cm_process_offld_pg(dev, l4kcqe);
4006                 return;
4007         }
4008
4009         l5_cid = l4kcqe->conn_id;
4010         if (opcode & 0x80)
4011                 l5_cid = l4kcqe->cid;
4012         if (l5_cid >= MAX_CM_SK_TBL_SZ)
4013                 return;
4014
4015         csk = &cp->csk_tbl[l5_cid];
4016         csk_hold(csk);
4017
4018         if (!cnic_in_use(csk)) {
4019                 csk_put(csk);
4020                 return;
4021         }
4022
4023         switch (opcode) {
4024         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
4025                 if (l4kcqe->status != 0) {
4026                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4027                         cnic_cm_upcall(cp, csk,
4028                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
4029                 }
4030                 break;
4031         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
4032                 if (l4kcqe->status == 0)
4033                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
4034                 else if (l4kcqe->status ==
4035                          L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4036                         set_bit(SK_F_HW_ERR, &csk->flags);
4037
4038                 smp_mb__before_atomic();
4039                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4040                 cnic_cm_upcall(cp, csk, opcode);
4041                 break;
4042
4043         case L5CM_RAMROD_CMD_ID_CLOSE: {
4044                 struct iscsi_kcqe *l5kcqe = (struct iscsi_kcqe *) kcqe;
4045
4046                 if (l4kcqe->status == 0 && l5kcqe->completion_status == 0)
4047                         break;
4048
4049                 netdev_warn(dev->netdev, "RAMROD CLOSE compl with status 0x%x completion status 0x%x\n",
4050                             l4kcqe->status, l5kcqe->completion_status);
4051                 opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
4052         }
4053                 fallthrough;
4054         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4055         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4056         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4057         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4058         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4059                 if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4060                         set_bit(SK_F_HW_ERR, &csk->flags);
4061
4062                 cp->close_conn(csk, opcode);
4063                 break;
4064
4065         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
4066                 /* after we already sent CLOSE_REQ */
4067                 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
4068                     !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
4069                     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
4070                         cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
4071                 else
4072                         cnic_cm_upcall(cp, csk, opcode);
4073                 break;
4074         }
4075         csk_put(csk);
4076 }
4077
4078 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
4079 {
4080         struct cnic_dev *dev = data;
4081         int i;
4082
4083         for (i = 0; i < num; i++)
4084                 cnic_cm_process_kcqe(dev, kcqe[i]);
4085 }
4086
4087 static struct cnic_ulp_ops cm_ulp_ops = {
4088         .indicate_kcqes         = cnic_cm_indicate_kcqe,
4089 };
4090
4091 static void cnic_cm_free_mem(struct cnic_dev *dev)
4092 {
4093         struct cnic_local *cp = dev->cnic_priv;
4094
4095         kvfree(cp->csk_tbl);
4096         cp->csk_tbl = NULL;
4097         cnic_free_id_tbl(&cp->csk_port_tbl);
4098 }
4099
4100 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
4101 {
4102         struct cnic_local *cp = dev->cnic_priv;
4103         u32 port_id;
4104         int i;
4105
4106         cp->csk_tbl = kvcalloc(MAX_CM_SK_TBL_SZ, sizeof(struct cnic_sock),
4107                                GFP_KERNEL);
4108         if (!cp->csk_tbl)
4109                 return -ENOMEM;
4110
4111         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++)
4112                 atomic_set(&cp->csk_tbl[i].ref_count, 0);
4113
4114         port_id = get_random_u32_below(CNIC_LOCAL_PORT_RANGE);
4115         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4116                              CNIC_LOCAL_PORT_MIN, port_id)) {
4117                 cnic_cm_free_mem(dev);
4118                 return -ENOMEM;
4119         }
4120         return 0;
4121 }
4122
4123 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
4124 {
4125         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
4126                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
4127                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
4128                 csk->state = opcode;
4129         }
4130
4131         /* 1. If event opcode matches the expected event in csk->state
4132          * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
4133          *    event
4134          * 3. If the expected event is 0, meaning the connection was never
4135          *    never established, we accept the opcode from cm_abort.
4136          */
4137         if (opcode == csk->state || csk->state == 0 ||
4138             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
4139             csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4140                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
4141                         if (csk->state == 0)
4142                                 csk->state = opcode;
4143                         return 1;
4144                 }
4145         }
4146         return 0;
4147 }
4148
4149 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
4150 {
4151         struct cnic_dev *dev = csk->dev;
4152         struct cnic_local *cp = dev->cnic_priv;
4153
4154         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
4155                 cnic_cm_upcall(cp, csk, opcode);
4156                 return;
4157         }
4158
4159         clear_bit(SK_F_CONNECT_START, &csk->flags);
4160         cnic_close_conn(csk);
4161         csk->state = opcode;
4162         cnic_cm_upcall(cp, csk, opcode);
4163 }
4164
4165 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
4166 {
4167 }
4168
4169 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
4170 {
4171         u32 seed;
4172
4173         seed = get_random_u32();
4174         cnic_ctx_wr(dev, 45, 0, seed);
4175         return 0;
4176 }
4177
4178 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
4179 {
4180         struct cnic_dev *dev = csk->dev;
4181         struct cnic_local *cp = dev->cnic_priv;
4182         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
4183         union l5cm_specific_data l5_data;
4184         u32 cmd = 0;
4185         int close_complete = 0;
4186
4187         switch (opcode) {
4188         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4189         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4190         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4191                 if (cnic_ready_to_close(csk, opcode)) {
4192                         if (test_bit(SK_F_HW_ERR, &csk->flags))
4193                                 close_complete = 1;
4194                         else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4195                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
4196                         else
4197                                 close_complete = 1;
4198                 }
4199                 break;
4200         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4201                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
4202                 break;
4203         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4204                 close_complete = 1;
4205                 break;
4206         }
4207         if (cmd) {
4208                 memset(&l5_data, 0, sizeof(l5_data));
4209
4210                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
4211                                     &l5_data);
4212         } else if (close_complete) {
4213                 ctx->timestamp = jiffies;
4214                 cnic_close_conn(csk);
4215                 cnic_cm_upcall(cp, csk, csk->state);
4216         }
4217 }
4218
4219 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
4220 {
4221         struct cnic_local *cp = dev->cnic_priv;
4222
4223         if (!cp->ctx_tbl)
4224                 return;
4225
4226         if (!netif_running(dev->netdev))
4227                 return;
4228
4229         cnic_bnx2x_delete_wait(dev, 0);
4230
4231         cancel_delayed_work(&cp->delete_task);
4232         flush_workqueue(cnic_wq);
4233
4234         if (atomic_read(&cp->iscsi_conn) != 0)
4235                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
4236                             atomic_read(&cp->iscsi_conn));
4237 }
4238
4239 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
4240 {
4241         struct bnx2x *bp = netdev_priv(dev->netdev);
4242         u32 pfid = bp->pfid;
4243         u32 port = BP_PORT(bp);
4244
4245         cnic_init_bnx2x_mac(dev);
4246         cnic_bnx2x_set_tcp_options(dev, 0, 1);
4247
4248         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4249                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4250
4251         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4252                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4253         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4254                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4255                 DEF_MAX_DA_COUNT);
4256
4257         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4258                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4259         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4260                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4261         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4262                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4263         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4264                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4265
4266         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4267                 DEF_MAX_CWND);
4268         return 0;
4269 }
4270
4271 static void cnic_delete_task(struct work_struct *work)
4272 {
4273         struct cnic_local *cp;
4274         struct cnic_dev *dev;
4275         u32 i;
4276         int need_resched = 0;
4277
4278         cp = container_of(work, struct cnic_local, delete_task.work);
4279         dev = cp->dev;
4280
4281         if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4282                 struct drv_ctl_info info;
4283
4284                 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4285
4286                 memset(&info, 0, sizeof(struct drv_ctl_info));
4287                 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4288                 cp->ethdev->drv_ctl(dev->netdev, &info);
4289         }
4290
4291         for (i = 0; i < cp->max_cid_space; i++) {
4292                 struct cnic_context *ctx = &cp->ctx_tbl[i];
4293                 int err;
4294
4295                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4296                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4297                         continue;
4298
4299                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4300                         need_resched = 1;
4301                         continue;
4302                 }
4303
4304                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4305                         continue;
4306
4307                 err = cnic_bnx2x_destroy_ramrod(dev, i);
4308
4309                 cnic_free_bnx2x_conn_resc(dev, i);
4310                 if (!err) {
4311                         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4312                                 atomic_dec(&cp->iscsi_conn);
4313
4314                         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4315                 }
4316         }
4317
4318         if (need_resched)
4319                 queue_delayed_work(cnic_wq, &cp->delete_task,
4320                                    msecs_to_jiffies(10));
4321
4322 }
4323
4324 static int cnic_cm_open(struct cnic_dev *dev)
4325 {
4326         struct cnic_local *cp = dev->cnic_priv;
4327         int err;
4328
4329         err = cnic_cm_alloc_mem(dev);
4330         if (err)
4331                 return err;
4332
4333         err = cp->start_cm(dev);
4334
4335         if (err)
4336                 goto err_out;
4337
4338         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4339
4340         dev->cm_create = cnic_cm_create;
4341         dev->cm_destroy = cnic_cm_destroy;
4342         dev->cm_connect = cnic_cm_connect;
4343         dev->cm_abort = cnic_cm_abort;
4344         dev->cm_close = cnic_cm_close;
4345         dev->cm_select_dev = cnic_cm_select_dev;
4346
4347         cp->ulp_handle[CNIC_ULP_L4] = dev;
4348         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4349         return 0;
4350
4351 err_out:
4352         cnic_cm_free_mem(dev);
4353         return err;
4354 }
4355
4356 static int cnic_cm_shutdown(struct cnic_dev *dev)
4357 {
4358         struct cnic_local *cp = dev->cnic_priv;
4359         int i;
4360
4361         if (!cp->csk_tbl)
4362                 return 0;
4363
4364         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4365                 struct cnic_sock *csk = &cp->csk_tbl[i];
4366
4367                 clear_bit(SK_F_INUSE, &csk->flags);
4368                 cnic_cm_cleanup(csk);
4369         }
4370         cnic_cm_free_mem(dev);
4371
4372         return 0;
4373 }
4374
4375 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4376 {
4377         u32 cid_addr;
4378         int i;
4379
4380         cid_addr = GET_CID_ADDR(cid);
4381
4382         for (i = 0; i < CTX_SIZE; i += 4)
4383                 cnic_ctx_wr(dev, cid_addr, i, 0);
4384 }
4385
4386 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4387 {
4388         struct cnic_local *cp = dev->cnic_priv;
4389         int ret = 0, i;
4390         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4391
4392         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4393                 return 0;
4394
4395         for (i = 0; i < cp->ctx_blks; i++) {
4396                 int j;
4397                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4398                 u32 val;
4399
4400                 memset(cp->ctx_arr[i].ctx, 0, CNIC_PAGE_SIZE);
4401
4402                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4403                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4404                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4405                         (u64) cp->ctx_arr[i].mapping >> 32);
4406                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4407                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4408                 for (j = 0; j < 10; j++) {
4409
4410                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4411                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4412                                 break;
4413                         udelay(5);
4414                 }
4415                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4416                         ret = -EBUSY;
4417                         break;
4418                 }
4419         }
4420         return ret;
4421 }
4422
4423 static void cnic_free_irq(struct cnic_dev *dev)
4424 {
4425         struct cnic_local *cp = dev->cnic_priv;
4426         struct cnic_eth_dev *ethdev = cp->ethdev;
4427
4428         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4429                 cp->disable_int_sync(dev);
4430                 tasklet_kill(&cp->cnic_irq_task);
4431                 free_irq(ethdev->irq_arr[0].vector, dev);
4432         }
4433 }
4434
4435 static int cnic_request_irq(struct cnic_dev *dev)
4436 {
4437         struct cnic_local *cp = dev->cnic_priv;
4438         struct cnic_eth_dev *ethdev = cp->ethdev;
4439         int err;
4440
4441         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4442         if (err)
4443                 tasklet_disable(&cp->cnic_irq_task);
4444
4445         return err;
4446 }
4447
4448 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4449 {
4450         struct cnic_local *cp = dev->cnic_priv;
4451         struct cnic_eth_dev *ethdev = cp->ethdev;
4452
4453         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4454                 int err, i = 0;
4455                 int sblk_num = cp->status_blk_num;
4456                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4457                            BNX2_HC_SB_CONFIG_1;
4458
4459                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4460
4461                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4462                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4463                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4464
4465                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4466                 tasklet_setup(&cp->cnic_irq_task, cnic_service_bnx2_msix);
4467                 err = cnic_request_irq(dev);
4468                 if (err)
4469                         return err;
4470
4471                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4472                        i < 10) {
4473                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4474                                 1 << (11 + sblk_num));
4475                         udelay(10);
4476                         i++;
4477                         barrier();
4478                 }
4479                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4480                         cnic_free_irq(dev);
4481                         goto failed;
4482                 }
4483
4484         } else {
4485                 struct status_block *sblk = cp->status_blk.gen;
4486                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4487                 int i = 0;
4488
4489                 while (sblk->status_completion_producer_index && i < 10) {
4490                         CNIC_WR(dev, BNX2_HC_COMMAND,
4491                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4492                         udelay(10);
4493                         i++;
4494                         barrier();
4495                 }
4496                 if (sblk->status_completion_producer_index)
4497                         goto failed;
4498
4499         }
4500         return 0;
4501
4502 failed:
4503         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4504         return -EBUSY;
4505 }
4506
4507 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4508 {
4509         struct cnic_local *cp = dev->cnic_priv;
4510         struct cnic_eth_dev *ethdev = cp->ethdev;
4511
4512         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4513                 return;
4514
4515         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4516                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4517 }
4518
4519 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4520 {
4521         struct cnic_local *cp = dev->cnic_priv;
4522         struct cnic_eth_dev *ethdev = cp->ethdev;
4523
4524         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4525                 return;
4526
4527         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4528                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4529         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4530         synchronize_irq(ethdev->irq_arr[0].vector);
4531 }
4532
4533 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4534 {
4535         struct cnic_local *cp = dev->cnic_priv;
4536         struct cnic_eth_dev *ethdev = cp->ethdev;
4537         struct cnic_uio_dev *udev = cp->udev;
4538         u32 cid_addr, tx_cid, sb_id;
4539         u32 val, offset0, offset1, offset2, offset3;
4540         int i;
4541         struct bnx2_tx_bd *txbd;
4542         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4543         struct status_block *s_blk = cp->status_blk.gen;
4544
4545         sb_id = cp->status_blk_num;
4546         tx_cid = 20;
4547         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4548         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4549                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4550
4551                 tx_cid = TX_TSS_CID + sb_id - 1;
4552                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4553                         (TX_TSS_CID << 7));
4554                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4555         }
4556         cp->tx_cons = *cp->tx_cons_ptr;
4557
4558         cid_addr = GET_CID_ADDR(tx_cid);
4559         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
4560                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4561
4562                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4563                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4564
4565                 offset0 = BNX2_L2CTX_TYPE_XI;
4566                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4567                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4568                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4569         } else {
4570                 cnic_init_context(dev, tx_cid);
4571                 cnic_init_context(dev, tx_cid + 1);
4572
4573                 offset0 = BNX2_L2CTX_TYPE;
4574                 offset1 = BNX2_L2CTX_CMD_TYPE;
4575                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4576                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4577         }
4578         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4579         cnic_ctx_wr(dev, cid_addr, offset0, val);
4580
4581         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4582         cnic_ctx_wr(dev, cid_addr, offset1, val);
4583
4584         txbd = udev->l2_ring;
4585
4586         buf_map = udev->l2_buf_map;
4587         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i++, txbd++) {
4588                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4589                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4590         }
4591         val = (u64) ring_map >> 32;
4592         cnic_ctx_wr(dev, cid_addr, offset2, val);
4593         txbd->tx_bd_haddr_hi = val;
4594
4595         val = (u64) ring_map & 0xffffffff;
4596         cnic_ctx_wr(dev, cid_addr, offset3, val);
4597         txbd->tx_bd_haddr_lo = val;
4598 }
4599
4600 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4601 {
4602         struct cnic_local *cp = dev->cnic_priv;
4603         struct cnic_eth_dev *ethdev = cp->ethdev;
4604         struct cnic_uio_dev *udev = cp->udev;
4605         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4606         int i;
4607         struct bnx2_rx_bd *rxbd;
4608         struct status_block *s_blk = cp->status_blk.gen;
4609         dma_addr_t ring_map = udev->l2_ring_map;
4610
4611         sb_id = cp->status_blk_num;
4612         cnic_init_context(dev, 2);
4613         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4614         coal_reg = BNX2_HC_COMMAND;
4615         coal_val = CNIC_RD(dev, coal_reg);
4616         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4617                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4618
4619                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4620                 coal_reg = BNX2_HC_COALESCE_NOW;
4621                 coal_val = 1 << (11 + sb_id);
4622         }
4623         i = 0;
4624         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4625                 CNIC_WR(dev, coal_reg, coal_val);
4626                 udelay(10);
4627                 i++;
4628                 barrier();
4629         }
4630         cp->rx_cons = *cp->rx_cons_ptr;
4631
4632         cid_addr = GET_CID_ADDR(2);
4633         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4634               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4635         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4636
4637         if (sb_id == 0)
4638                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4639         else
4640                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4641         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4642
4643         rxbd = udev->l2_ring + CNIC_PAGE_SIZE;
4644         for (i = 0; i < BNX2_MAX_RX_DESC_CNT; i++, rxbd++) {
4645                 dma_addr_t buf_map;
4646                 int n = (i % cp->l2_rx_ring_size) + 1;
4647
4648                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4649                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4650                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4651                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4652                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4653         }
4654         val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
4655         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4656         rxbd->rx_bd_haddr_hi = val;
4657
4658         val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
4659         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4660         rxbd->rx_bd_haddr_lo = val;
4661
4662         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4663         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4664 }
4665
4666 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4667 {
4668         struct kwqe *wqes[1], l2kwqe;
4669
4670         memset(&l2kwqe, 0, sizeof(l2kwqe));
4671         wqes[0] = &l2kwqe;
4672         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4673                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4674                                KWQE_OPCODE_SHIFT) | 2;
4675         dev->submit_kwqes(dev, wqes, 1);
4676 }
4677
4678 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4679 {
4680         struct cnic_local *cp = dev->cnic_priv;
4681         u32 val;
4682
4683         val = cp->func << 2;
4684
4685         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4686
4687         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4688                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4689         dev->mac_addr[0] = (u8) (val >> 8);
4690         dev->mac_addr[1] = (u8) val;
4691
4692         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4693
4694         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4695                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4696         dev->mac_addr[2] = (u8) (val >> 24);
4697         dev->mac_addr[3] = (u8) (val >> 16);
4698         dev->mac_addr[4] = (u8) (val >> 8);
4699         dev->mac_addr[5] = (u8) val;
4700
4701         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4702
4703         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4704         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4705                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4706
4707         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4708         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4709         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4710 }
4711
4712 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4713 {
4714         struct cnic_local *cp = dev->cnic_priv;
4715         struct cnic_eth_dev *ethdev = cp->ethdev;
4716         struct status_block *sblk = cp->status_blk.gen;
4717         u32 val, kcq_cid_addr, kwq_cid_addr;
4718         int err;
4719
4720         cnic_set_bnx2_mac(dev);
4721
4722         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4723         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4724         if (CNIC_PAGE_BITS > 12)
4725                 val |= (12 - 8)  << 4;
4726         else
4727                 val |= (CNIC_PAGE_BITS - 8)  << 4;
4728
4729         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4730
4731         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4732         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4733         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4734
4735         err = cnic_setup_5709_context(dev, 1);
4736         if (err)
4737                 return err;
4738
4739         cnic_init_context(dev, KWQ_CID);
4740         cnic_init_context(dev, KCQ_CID);
4741
4742         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4743         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4744
4745         cp->max_kwq_idx = MAX_KWQ_IDX;
4746         cp->kwq_prod_idx = 0;
4747         cp->kwq_con_idx = 0;
4748         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4749
4750         if (BNX2_CHIP(cp) == BNX2_CHIP_5706 || BNX2_CHIP(cp) == BNX2_CHIP_5708)
4751                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4752         else
4753                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4754
4755         /* Initialize the kernel work queue context. */
4756         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4757               (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4758         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4759
4760         val = (CNIC_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4761         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4762
4763         val = ((CNIC_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4764         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4765
4766         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4767         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4768
4769         val = (u32) cp->kwq_info.pgtbl_map;
4770         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4771
4772         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4773         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4774
4775         cp->kcq1.sw_prod_idx = 0;
4776         cp->kcq1.hw_prod_idx_ptr =
4777                 &sblk->status_completion_producer_index;
4778
4779         cp->kcq1.status_idx_ptr = &sblk->status_idx;
4780
4781         /* Initialize the kernel complete queue context. */
4782         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4783               (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4784         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4785
4786         val = (CNIC_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4787         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4788
4789         val = ((CNIC_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4790         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4791
4792         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4793         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4794
4795         val = (u32) cp->kcq1.dma.pgtbl_map;
4796         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4797
4798         cp->int_num = 0;
4799         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4800                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4801                 u32 sb_id = cp->status_blk_num;
4802                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4803
4804                 cp->kcq1.hw_prod_idx_ptr =
4805                         &msblk->status_completion_producer_index;
4806                 cp->kcq1.status_idx_ptr = &msblk->status_idx;
4807                 cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
4808                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4809                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4810                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4811         }
4812
4813         /* Enable Commnad Scheduler notification when we write to the
4814          * host producer index of the kernel contexts. */
4815         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4816
4817         /* Enable Command Scheduler notification when we write to either
4818          * the Send Queue or Receive Queue producer indexes of the kernel
4819          * bypass contexts. */
4820         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4821         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4822
4823         /* Notify COM when the driver post an application buffer. */
4824         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4825
4826         /* Set the CP and COM doorbells.  These two processors polls the
4827          * doorbell for a non zero value before running.  This must be done
4828          * after setting up the kernel queue contexts. */
4829         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4830         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4831
4832         cnic_init_bnx2_tx_ring(dev);
4833         cnic_init_bnx2_rx_ring(dev);
4834
4835         err = cnic_init_bnx2_irq(dev);
4836         if (err) {
4837                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4838                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4839                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4840                 return err;
4841         }
4842
4843         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
4844
4845         return 0;
4846 }
4847
4848 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4849 {
4850         struct cnic_local *cp = dev->cnic_priv;
4851         struct cnic_eth_dev *ethdev = cp->ethdev;
4852         u32 start_offset = ethdev->ctx_tbl_offset;
4853         int i;
4854
4855         for (i = 0; i < cp->ctx_blks; i++) {
4856                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4857                 dma_addr_t map = ctx->mapping;
4858
4859                 if (cp->ctx_align) {
4860                         unsigned long mask = cp->ctx_align - 1;
4861
4862                         map = (map + mask) & ~mask;
4863                 }
4864
4865                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4866         }
4867 }
4868
4869 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4870 {
4871         struct cnic_local *cp = dev->cnic_priv;
4872         struct cnic_eth_dev *ethdev = cp->ethdev;
4873         int err = 0;
4874
4875         tasklet_setup(&cp->cnic_irq_task, cnic_service_bnx2x_bh);
4876         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4877                 err = cnic_request_irq(dev);
4878
4879         return err;
4880 }
4881
4882 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4883                                                 u16 sb_id, u8 sb_index,
4884                                                 u8 disable)
4885 {
4886         struct bnx2x *bp = netdev_priv(dev->netdev);
4887
4888         u32 addr = BAR_CSTRORM_INTMEM +
4889                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4890                         offsetof(struct hc_status_block_data_e1x, index_data) +
4891                         sizeof(struct hc_index_data)*sb_index +
4892                         offsetof(struct hc_index_data, flags);
4893         u16 flags = CNIC_RD16(dev, addr);
4894         /* clear and set */
4895         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4896         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4897                   HC_INDEX_DATA_HC_ENABLED);
4898         CNIC_WR16(dev, addr, flags);
4899 }
4900
4901 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4902 {
4903         struct cnic_local *cp = dev->cnic_priv;
4904         struct bnx2x *bp = netdev_priv(dev->netdev);
4905         u8 sb_id = cp->status_blk_num;
4906
4907         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4908                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4909                         offsetof(struct hc_status_block_data_e1x, index_data) +
4910                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4911                         offsetof(struct hc_index_data, timeout), 64 / 4);
4912         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4913 }
4914
4915 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4916 {
4917 }
4918
4919 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4920                                     struct client_init_ramrod_data *data)
4921 {
4922         struct cnic_local *cp = dev->cnic_priv;
4923         struct bnx2x *bp = netdev_priv(dev->netdev);
4924         struct cnic_uio_dev *udev = cp->udev;
4925         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4926         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4927         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4928         int i;
4929         u32 cli = cp->ethdev->iscsi_l2_client_id;
4930         u32 val;
4931
4932         memset(txbd, 0, CNIC_PAGE_SIZE);
4933
4934         buf_map = udev->l2_buf_map;
4935         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4936                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4937                 struct eth_tx_parse_bd_e1x *pbd_e1x =
4938                         &((txbd + 1)->parse_bd_e1x);
4939                 struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2);
4940                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4941
4942                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4943                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4944                 reg_bd->addr_hi = start_bd->addr_hi;
4945                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4946                 start_bd->nbytes = cpu_to_le16(0x10);
4947                 start_bd->nbd = cpu_to_le16(3);
4948                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4949                 start_bd->general_data &= ~ETH_TX_START_BD_PARSE_NBDS;
4950                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4951
4952                 if (BNX2X_CHIP_IS_E2_PLUS(bp))
4953                         pbd_e2->parsing_data = (UNICAST_ADDRESS <<
4954                                 ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT);
4955                 else
4956                         pbd_e1x->global_data = (UNICAST_ADDRESS <<
4957                                 ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT);
4958         }
4959
4960         val = (u64) ring_map >> 32;
4961         txbd->next_bd.addr_hi = cpu_to_le32(val);
4962
4963         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4964
4965         val = (u64) ring_map & 0xffffffff;
4966         txbd->next_bd.addr_lo = cpu_to_le32(val);
4967
4968         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4969
4970         /* Other ramrod params */
4971         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4972         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4973
4974         /* reset xstorm per client statistics */
4975         if (cli < MAX_STAT_COUNTER_ID) {
4976                 data->general.statistics_zero_flg = 1;
4977                 data->general.statistics_en_flg = 1;
4978                 data->general.statistics_counter_id = cli;
4979         }
4980
4981         cp->tx_cons_ptr =
4982                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4983 }
4984
4985 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4986                                     struct client_init_ramrod_data *data)
4987 {
4988         struct cnic_local *cp = dev->cnic_priv;
4989         struct bnx2x *bp = netdev_priv(dev->netdev);
4990         struct cnic_uio_dev *udev = cp->udev;
4991         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4992                                 CNIC_PAGE_SIZE);
4993         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4994                                 (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
4995         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4996         int i;
4997         u32 cli = cp->ethdev->iscsi_l2_client_id;
4998         int cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
4999         u32 val;
5000         dma_addr_t ring_map = udev->l2_ring_map;
5001
5002         /* General data */
5003         data->general.client_id = cli;
5004         data->general.activate_flg = 1;
5005         data->general.sp_client_id = cli;
5006         data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
5007         data->general.func_id = bp->pfid;
5008
5009         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
5010                 dma_addr_t buf_map;
5011                 int n = (i % cp->l2_rx_ring_size) + 1;
5012
5013                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
5014                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
5015                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
5016         }
5017
5018         val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
5019         rxbd->addr_hi = cpu_to_le32(val);
5020         data->rx.bd_page_base.hi = cpu_to_le32(val);
5021
5022         val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
5023         rxbd->addr_lo = cpu_to_le32(val);
5024         data->rx.bd_page_base.lo = cpu_to_le32(val);
5025
5026         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
5027         val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) >> 32;
5028         rxcqe->addr_hi = cpu_to_le32(val);
5029         data->rx.cqe_page_base.hi = cpu_to_le32(val);
5030
5031         val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) & 0xffffffff;
5032         rxcqe->addr_lo = cpu_to_le32(val);
5033         data->rx.cqe_page_base.lo = cpu_to_le32(val);
5034
5035         /* Other ramrod params */
5036         data->rx.client_qzone_id = cl_qzone_id;
5037         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
5038         data->rx.status_block_id = BNX2X_DEF_SB_ID;
5039
5040         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
5041
5042         data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
5043         data->rx.outer_vlan_removal_enable_flg = 1;
5044         data->rx.silent_vlan_removal_flg = 1;
5045         data->rx.silent_vlan_value = 0;
5046         data->rx.silent_vlan_mask = 0xffff;
5047
5048         cp->rx_cons_ptr =
5049                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
5050         cp->rx_cons = *cp->rx_cons_ptr;
5051 }
5052
5053 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
5054 {
5055         struct cnic_local *cp = dev->cnic_priv;
5056         struct bnx2x *bp = netdev_priv(dev->netdev);
5057         u32 pfid = bp->pfid;
5058
5059         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
5060                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
5061         cp->kcq1.sw_prod_idx = 0;
5062
5063         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5064                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5065
5066                 cp->kcq1.hw_prod_idx_ptr =
5067                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5068                 cp->kcq1.status_idx_ptr =
5069                         &sb->sb.running_index[SM_RX_ID];
5070         } else {
5071                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
5072
5073                 cp->kcq1.hw_prod_idx_ptr =
5074                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5075                 cp->kcq1.status_idx_ptr =
5076                         &sb->sb.running_index[SM_RX_ID];
5077         }
5078
5079         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5080                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5081
5082                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
5083                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
5084                 cp->kcq2.sw_prod_idx = 0;
5085                 cp->kcq2.hw_prod_idx_ptr =
5086                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
5087                 cp->kcq2.status_idx_ptr =
5088                         &sb->sb.running_index[SM_RX_ID];
5089         }
5090 }
5091
5092 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
5093 {
5094         struct cnic_local *cp = dev->cnic_priv;
5095         struct bnx2x *bp = netdev_priv(dev->netdev);
5096         struct cnic_eth_dev *ethdev = cp->ethdev;
5097         int ret;
5098         u32 pfid;
5099
5100         dev->stats_addr = ethdev->addr_drv_info_to_mcp;
5101         cp->func = bp->pf_num;
5102
5103         pfid = bp->pfid;
5104
5105         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5106                                cp->iscsi_start_cid, 0);
5107
5108         if (ret)
5109                 return -ENOMEM;
5110
5111         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5112                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5113                                         cp->fcoe_start_cid, 0);
5114
5115                 if (ret)
5116                         return -ENOMEM;
5117         }
5118
5119         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
5120
5121         cnic_init_bnx2x_kcq(dev);
5122
5123         /* Only 1 EQ */
5124         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5125         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5126                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5127         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5128                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5129                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5130         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5131                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5132                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5133         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5134                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5135                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5136         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5137                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5138                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5139         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5140                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5141         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5142                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5143         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5144                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5145                 HC_INDEX_ISCSI_EQ_CONS);
5146
5147         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5148                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5149                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
5150         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5151                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5152                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
5153
5154         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
5155                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
5156
5157         cnic_setup_bnx2x_context(dev);
5158
5159         ret = cnic_init_bnx2x_irq(dev);
5160         if (ret)
5161                 return ret;
5162
5163         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
5164         return 0;
5165 }
5166
5167 static void cnic_init_rings(struct cnic_dev *dev)
5168 {
5169         struct cnic_local *cp = dev->cnic_priv;
5170         struct bnx2x *bp = netdev_priv(dev->netdev);
5171         struct cnic_uio_dev *udev = cp->udev;
5172
5173         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5174                 return;
5175
5176         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5177                 cnic_init_bnx2_tx_ring(dev);
5178                 cnic_init_bnx2_rx_ring(dev);
5179                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5180         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5181                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5182                 u32 cid = cp->ethdev->iscsi_l2_cid;
5183                 u32 cl_qzone_id;
5184                 struct client_init_ramrod_data *data;
5185                 union l5cm_specific_data l5_data;
5186                 struct ustorm_eth_rx_producers rx_prods = {0};
5187                 u32 off, i, *cid_ptr;
5188
5189                 rx_prods.bd_prod = 0;
5190                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
5191                 barrier();
5192
5193                 cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
5194
5195                 off = BAR_USTRORM_INTMEM +
5196                         (BNX2X_CHIP_IS_E2_PLUS(bp) ?
5197                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
5198                          USTORM_RX_PRODS_E1X_OFFSET(BP_PORT(bp), cli));
5199
5200                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5201                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5202
5203                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5204
5205                 data = udev->l2_buf;
5206                 cid_ptr = udev->l2_buf + 12;
5207
5208                 memset(data, 0, sizeof(*data));
5209
5210                 cnic_init_bnx2x_tx_ring(dev, data);
5211                 cnic_init_bnx2x_rx_ring(dev, data);
5212
5213                 data->general.fp_hsi_ver =  ETH_FP_HSI_VERSION;
5214
5215                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5216                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5217
5218                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5219
5220                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5221                         cid, ETH_CONNECTION_TYPE, &l5_data);
5222
5223                 i = 0;
5224                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5225                        ++i < 10)
5226                         msleep(1);
5227
5228                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5229                         netdev_err(dev->netdev,
5230                                 "iSCSI CLIENT_SETUP did not complete\n");
5231                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5232                 cnic_ring_ctl(dev, cid, cli, 1);
5233                 *cid_ptr = cid >> 4;
5234                 *(cid_ptr + 1) = cid * bp->db_size;
5235                 *(cid_ptr + 2) = UIO_USE_TX_DOORBELL;
5236         }
5237 }
5238
5239 static void cnic_shutdown_rings(struct cnic_dev *dev)
5240 {
5241         struct cnic_local *cp = dev->cnic_priv;
5242         struct cnic_uio_dev *udev = cp->udev;
5243         void *rx_ring;
5244
5245         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5246                 return;
5247
5248         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5249                 cnic_shutdown_bnx2_rx_ring(dev);
5250         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5251                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5252                 u32 cid = cp->ethdev->iscsi_l2_cid;
5253                 union l5cm_specific_data l5_data;
5254                 int i;
5255
5256                 cnic_ring_ctl(dev, cid, cli, 0);
5257
5258                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5259
5260                 l5_data.phy_address.lo = cli;
5261                 l5_data.phy_address.hi = 0;
5262                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5263                         cid, ETH_CONNECTION_TYPE, &l5_data);
5264                 i = 0;
5265                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5266                        ++i < 10)
5267                         msleep(1);
5268
5269                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5270                         netdev_err(dev->netdev,
5271                                 "iSCSI CLIENT_HALT did not complete\n");
5272                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5273
5274                 memset(&l5_data, 0, sizeof(l5_data));
5275                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5276                         cid, NONE_CONNECTION_TYPE, &l5_data);
5277                 msleep(10);
5278         }
5279         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5280         rx_ring = udev->l2_ring + CNIC_PAGE_SIZE;
5281         memset(rx_ring, 0, CNIC_PAGE_SIZE);
5282 }
5283
5284 static int cnic_register_netdev(struct cnic_dev *dev)
5285 {
5286         struct cnic_local *cp = dev->cnic_priv;
5287         struct cnic_eth_dev *ethdev = cp->ethdev;
5288         int err;
5289
5290         if (!ethdev)
5291                 return -ENODEV;
5292
5293         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5294                 return 0;
5295
5296         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5297         if (err)
5298                 netdev_err(dev->netdev, "register_cnic failed\n");
5299
5300         /* Read iSCSI config again.  On some bnx2x device, iSCSI config
5301          * can change after firmware is downloaded.
5302          */
5303         dev->max_iscsi_conn = ethdev->max_iscsi_conn;
5304         if (ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
5305                 dev->max_iscsi_conn = 0;
5306
5307         return err;
5308 }
5309
5310 static void cnic_unregister_netdev(struct cnic_dev *dev)
5311 {
5312         struct cnic_local *cp = dev->cnic_priv;
5313         struct cnic_eth_dev *ethdev = cp->ethdev;
5314
5315         if (!ethdev)
5316                 return;
5317
5318         ethdev->drv_unregister_cnic(dev->netdev);
5319 }
5320
5321 static int cnic_start_hw(struct cnic_dev *dev)
5322 {
5323         struct cnic_local *cp = dev->cnic_priv;
5324         struct cnic_eth_dev *ethdev = cp->ethdev;
5325         int err;
5326
5327         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5328                 return -EALREADY;
5329
5330         dev->regview = ethdev->io_base;
5331         pci_dev_get(dev->pcidev);
5332         cp->func = PCI_FUNC(dev->pcidev->devfn);
5333         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5334         cp->status_blk_map = ethdev->irq_arr[0].status_blk_map;
5335         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5336
5337         err = cp->alloc_resc(dev);
5338         if (err) {
5339                 netdev_err(dev->netdev, "allocate resource failure\n");
5340                 goto err1;
5341         }
5342
5343         err = cp->start_hw(dev);
5344         if (err)
5345                 goto err1;
5346
5347         err = cnic_cm_open(dev);
5348         if (err)
5349                 goto err1;
5350
5351         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5352
5353         cp->enable_int(dev);
5354
5355         return 0;
5356
5357 err1:
5358         if (ethdev->drv_state & CNIC_DRV_STATE_HANDLES_IRQ)
5359                 cp->stop_hw(dev);
5360         else
5361                 cp->free_resc(dev);
5362         pci_dev_put(dev->pcidev);
5363         return err;
5364 }
5365
5366 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5367 {
5368         cnic_disable_bnx2_int_sync(dev);
5369
5370         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5371         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5372
5373         cnic_init_context(dev, KWQ_CID);
5374         cnic_init_context(dev, KCQ_CID);
5375
5376         cnic_setup_5709_context(dev, 0);
5377         cnic_free_irq(dev);
5378
5379         cnic_free_resc(dev);
5380 }
5381
5382
5383 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5384 {
5385         struct cnic_local *cp = dev->cnic_priv;
5386         struct bnx2x *bp = netdev_priv(dev->netdev);
5387         u32 hc_index = HC_INDEX_ISCSI_EQ_CONS;
5388         u32 sb_id = cp->status_blk_num;
5389         u32 idx_off, syn_off;
5390
5391         cnic_free_irq(dev);
5392
5393         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5394                 idx_off = offsetof(struct hc_status_block_e2, index_values) +
5395                           (hc_index * sizeof(u16));
5396
5397                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E2_OFFSET(hc_index, sb_id);
5398         } else {
5399                 idx_off = offsetof(struct hc_status_block_e1x, index_values) +
5400                           (hc_index * sizeof(u16));
5401
5402                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E1X_OFFSET(hc_index, sb_id);
5403         }
5404         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + syn_off, 0);
5405         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_OFFSET(sb_id) +
5406                   idx_off, 0);
5407
5408         *cp->kcq1.hw_prod_idx_ptr = 0;
5409         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5410                 CSTORM_ISCSI_EQ_CONS_OFFSET(bp->pfid, 0), 0);
5411         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5412         cnic_free_resc(dev);
5413 }
5414
5415 static void cnic_stop_hw(struct cnic_dev *dev)
5416 {
5417         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5418                 struct cnic_local *cp = dev->cnic_priv;
5419                 int i = 0;
5420
5421                 /* Need to wait for the ring shutdown event to complete
5422                  * before clearing the CNIC_UP flag.
5423                  */
5424                 while (cp->udev && cp->udev->uio_dev != -1 && i < 15) {
5425                         msleep(100);
5426                         i++;
5427                 }
5428                 cnic_shutdown_rings(dev);
5429                 cp->stop_cm(dev);
5430                 cp->ethdev->drv_state &= ~CNIC_DRV_STATE_HANDLES_IRQ;
5431                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5432                 RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5433                 synchronize_rcu();
5434                 cnic_cm_shutdown(dev);
5435                 cp->stop_hw(dev);
5436                 pci_dev_put(dev->pcidev);
5437         }
5438 }
5439
5440 static void cnic_free_dev(struct cnic_dev *dev)
5441 {
5442         int i = 0;
5443
5444         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5445                 msleep(100);
5446                 i++;
5447         }
5448         if (atomic_read(&dev->ref_count) != 0)
5449                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5450
5451         netdev_info(dev->netdev, "Removed CNIC device\n");
5452         dev_put(dev->netdev);
5453         kfree(dev);
5454 }
5455
5456 static int cnic_get_fc_npiv_tbl(struct cnic_dev *dev,
5457                                 struct cnic_fc_npiv_tbl *npiv_tbl)
5458 {
5459         struct cnic_local *cp = dev->cnic_priv;
5460         struct bnx2x *bp = netdev_priv(dev->netdev);
5461         int ret;
5462
5463         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
5464                 return -EAGAIN;     /* bnx2x is down */
5465
5466         if (!BNX2X_CHIP_IS_E2_PLUS(bp))
5467                 return -EINVAL;
5468
5469         ret = cp->ethdev->drv_get_fc_npiv_tbl(dev->netdev, npiv_tbl);
5470         return ret;
5471 }
5472
5473 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5474                                        struct pci_dev *pdev)
5475 {
5476         struct cnic_dev *cdev;
5477         struct cnic_local *cp;
5478         int alloc_size;
5479
5480         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5481
5482         cdev = kzalloc(alloc_size, GFP_KERNEL);
5483         if (cdev == NULL)
5484                 return NULL;
5485
5486         cdev->netdev = dev;
5487         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5488         cdev->register_device = cnic_register_device;
5489         cdev->unregister_device = cnic_unregister_device;
5490         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5491         cdev->get_fc_npiv_tbl = cnic_get_fc_npiv_tbl;
5492         atomic_set(&cdev->ref_count, 0);
5493
5494         cp = cdev->cnic_priv;
5495         cp->dev = cdev;
5496         cp->l2_single_buf_size = 0x400;
5497         cp->l2_rx_ring_size = 3;
5498
5499         spin_lock_init(&cp->cnic_ulp_lock);
5500
5501         netdev_info(dev, "Added CNIC device\n");
5502
5503         return cdev;
5504 }
5505
5506 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5507 {
5508         struct pci_dev *pdev;
5509         struct cnic_dev *cdev;
5510         struct cnic_local *cp;
5511         struct bnx2 *bp = netdev_priv(dev);
5512         struct cnic_eth_dev *ethdev = NULL;
5513
5514         if (bp->cnic_probe)
5515                 ethdev = (bp->cnic_probe)(dev);
5516
5517         if (!ethdev)
5518                 return NULL;
5519
5520         pdev = ethdev->pdev;
5521         if (!pdev)
5522                 return NULL;
5523
5524         dev_hold(dev);
5525         pci_dev_get(pdev);
5526         if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5527              pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5528             (pdev->revision < 0x10)) {
5529                 pci_dev_put(pdev);
5530                 goto cnic_err;
5531         }
5532         pci_dev_put(pdev);
5533
5534         cdev = cnic_alloc_dev(dev, pdev);
5535         if (cdev == NULL)
5536                 goto cnic_err;
5537
5538         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5539         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5540
5541         cp = cdev->cnic_priv;
5542         cp->ethdev = ethdev;
5543         cdev->pcidev = pdev;
5544         cp->chip_id = ethdev->chip_id;
5545
5546         cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5547
5548         cp->cnic_ops = &cnic_bnx2_ops;
5549         cp->start_hw = cnic_start_bnx2_hw;
5550         cp->stop_hw = cnic_stop_bnx2_hw;
5551         cp->setup_pgtbl = cnic_setup_page_tbl;
5552         cp->alloc_resc = cnic_alloc_bnx2_resc;
5553         cp->free_resc = cnic_free_resc;
5554         cp->start_cm = cnic_cm_init_bnx2_hw;
5555         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5556         cp->enable_int = cnic_enable_bnx2_int;
5557         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5558         cp->close_conn = cnic_close_bnx2_conn;
5559         return cdev;
5560
5561 cnic_err:
5562         dev_put(dev);
5563         return NULL;
5564 }
5565
5566 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5567 {
5568         struct pci_dev *pdev;
5569         struct cnic_dev *cdev;
5570         struct cnic_local *cp;
5571         struct bnx2x *bp = netdev_priv(dev);
5572         struct cnic_eth_dev *ethdev = NULL;
5573
5574         if (bp->cnic_probe)
5575                 ethdev = bp->cnic_probe(dev);
5576
5577         if (!ethdev)
5578                 return NULL;
5579
5580         pdev = ethdev->pdev;
5581         if (!pdev)
5582                 return NULL;
5583
5584         dev_hold(dev);
5585         cdev = cnic_alloc_dev(dev, pdev);
5586         if (cdev == NULL) {
5587                 dev_put(dev);
5588                 return NULL;
5589         }
5590
5591         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5592         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5593
5594         cp = cdev->cnic_priv;
5595         cp->ethdev = ethdev;
5596         cdev->pcidev = pdev;
5597         cp->chip_id = ethdev->chip_id;
5598
5599         cdev->stats_addr = ethdev->addr_drv_info_to_mcp;
5600
5601         if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5602                 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5603         if (CNIC_SUPPORTS_FCOE(bp)) {
5604                 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5605                 cdev->max_fcoe_exchanges = ethdev->max_fcoe_exchanges;
5606         }
5607
5608         if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
5609                 cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
5610
5611         memcpy(cdev->mac_addr, ethdev->iscsi_mac, ETH_ALEN);
5612
5613         cp->cnic_ops = &cnic_bnx2x_ops;
5614         cp->start_hw = cnic_start_bnx2x_hw;
5615         cp->stop_hw = cnic_stop_bnx2x_hw;
5616         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5617         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5618         cp->free_resc = cnic_free_resc;
5619         cp->start_cm = cnic_cm_init_bnx2x_hw;
5620         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5621         cp->enable_int = cnic_enable_bnx2x_int;
5622         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5623         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5624                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5625                 cp->arm_int = cnic_arm_bnx2x_e2_msix;
5626         } else {
5627                 cp->ack_int = cnic_ack_bnx2x_msix;
5628                 cp->arm_int = cnic_arm_bnx2x_msix;
5629         }
5630         cp->close_conn = cnic_close_bnx2x_conn;
5631         return cdev;
5632 }
5633
5634 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5635 {
5636         struct ethtool_drvinfo drvinfo;
5637         struct cnic_dev *cdev = NULL;
5638
5639         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5640                 memset(&drvinfo, 0, sizeof(drvinfo));
5641                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5642
5643                 if (!strcmp(drvinfo.driver, "bnx2"))
5644                         cdev = init_bnx2_cnic(dev);
5645                 if (!strcmp(drvinfo.driver, "bnx2x"))
5646                         cdev = init_bnx2x_cnic(dev);
5647                 if (cdev) {
5648                         write_lock(&cnic_dev_lock);
5649                         list_add(&cdev->list, &cnic_dev_list);
5650                         write_unlock(&cnic_dev_lock);
5651                 }
5652         }
5653         return cdev;
5654 }
5655
5656 static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
5657                               u16 vlan_id)
5658 {
5659         int if_type;
5660
5661         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5662                 struct cnic_ulp_ops *ulp_ops;
5663                 void *ctx;
5664
5665                 mutex_lock(&cnic_lock);
5666                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
5667                                                 lockdep_is_held(&cnic_lock));
5668                 if (!ulp_ops || !ulp_ops->indicate_netevent) {
5669                         mutex_unlock(&cnic_lock);
5670                         continue;
5671                 }
5672
5673                 ctx = cp->ulp_handle[if_type];
5674
5675                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
5676                 mutex_unlock(&cnic_lock);
5677
5678                 ulp_ops->indicate_netevent(ctx, event, vlan_id);
5679
5680                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
5681         }
5682 }
5683
5684 /* netdev event handler */
5685 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5686                                                          void *ptr)
5687 {
5688         struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
5689         struct cnic_dev *dev;
5690         int new_dev = 0;
5691
5692         dev = cnic_from_netdev(netdev);
5693
5694         if (!dev && event == NETDEV_REGISTER) {
5695                 /* Check for the hot-plug device */
5696                 dev = is_cnic_dev(netdev);
5697                 if (dev) {
5698                         new_dev = 1;
5699                         cnic_hold(dev);
5700                 }
5701         }
5702         if (dev) {
5703                 struct cnic_local *cp = dev->cnic_priv;
5704
5705                 if (new_dev)
5706                         cnic_ulp_init(dev);
5707                 else if (event == NETDEV_UNREGISTER)
5708                         cnic_ulp_exit(dev);
5709
5710                 if (event == NETDEV_UP) {
5711                         if (cnic_register_netdev(dev) != 0) {
5712                                 cnic_put(dev);
5713                                 goto done;
5714                         }
5715                         if (!cnic_start_hw(dev))
5716                                 cnic_ulp_start(dev);
5717                 }
5718
5719                 cnic_rcv_netevent(cp, event, 0);
5720
5721                 if (event == NETDEV_GOING_DOWN) {
5722                         cnic_ulp_stop(dev);
5723                         cnic_stop_hw(dev);
5724                         cnic_unregister_netdev(dev);
5725                 } else if (event == NETDEV_UNREGISTER) {
5726                         write_lock(&cnic_dev_lock);
5727                         list_del_init(&dev->list);
5728                         write_unlock(&cnic_dev_lock);
5729
5730                         cnic_put(dev);
5731                         cnic_free_dev(dev);
5732                         goto done;
5733                 }
5734                 cnic_put(dev);
5735         } else {
5736                 struct net_device *realdev;
5737                 u16 vid;
5738
5739                 vid = cnic_get_vlan(netdev, &realdev);
5740                 if (realdev) {
5741                         dev = cnic_from_netdev(realdev);
5742                         if (dev) {
5743                                 vid |= VLAN_CFI_MASK;   /* make non-zero */
5744                                 cnic_rcv_netevent(dev->cnic_priv, event, vid);
5745                                 cnic_put(dev);
5746                         }
5747                 }
5748         }
5749 done:
5750         return NOTIFY_DONE;
5751 }
5752
5753 static struct notifier_block cnic_netdev_notifier = {
5754         .notifier_call = cnic_netdev_event
5755 };
5756
5757 static void cnic_release(void)
5758 {
5759         struct cnic_uio_dev *udev;
5760
5761         while (!list_empty(&cnic_udev_list)) {
5762                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5763                                   list);
5764                 cnic_free_uio(udev);
5765         }
5766 }
5767
5768 static int __init cnic_init(void)
5769 {
5770         int rc = 0;
5771
5772         pr_info("%s", version);
5773
5774         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5775         if (rc) {
5776                 cnic_release();
5777                 return rc;
5778         }
5779
5780         cnic_wq = create_singlethread_workqueue("cnic_wq");
5781         if (!cnic_wq) {
5782                 cnic_release();
5783                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5784                 return -ENOMEM;
5785         }
5786
5787         return 0;
5788 }
5789
5790 static void __exit cnic_exit(void)
5791 {
5792         unregister_netdevice_notifier(&cnic_netdev_notifier);
5793         cnic_release();
5794         destroy_workqueue(cnic_wq);
5795 }
5796
5797 module_init(cnic_init);
5798 module_exit(cnic_exit);