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

   1 /* cnic.c: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2014 Broadcom Corporation
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation.
   8  *
   9  * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
  10  * Modified and maintained by: Michael Chan <mchan@broadcom.com>
  11  */
  12
  13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  14
  15 #include <linux/module.h>
  16
  17 #include <linux/kernel.h>
  18 #include <linux/errno.h>
  19 #include <linux/list.h>
  20 #include <linux/slab.h>
  21 #include <linux/pci.h>
  22 #include <linux/init.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/uio_driver.h>
  25 #include <linux/in.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/delay.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_vlan.h>
  30 #include <linux/prefetch.h>
  31 #include <linux/random.h>
  32 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
  33 #define BCM_VLAN 1
  34 #endif
  35 #include <net/ip.h>
  36 #include <net/tcp.h>
  37 #include <net/route.h>
  38 #include <net/ipv6.h>
  39 #include <net/ip6_route.h>
  40 #include <net/ip6_checksum.h>
  41 #include <scsi/iscsi_if.h>
  42
  43 #define BCM_CNIC        1
  44 #include "cnic_if.h"
  45 #include "bnx2.h"
  46 #include "bnx2x/bnx2x.h"
  47 #include "bnx2x/bnx2x_reg.h"
  48 #include "bnx2x/bnx2x_fw_defs.h"
  49 #include "bnx2x/bnx2x_hsi.h"
  50 #include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
  51 #include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
  52 #include "../../../scsi/bnx2fc/bnx2fc_constants.h"
  53 #include "cnic.h"
  54 #include "cnic_defs.h"
  55
  56 #define CNIC_MODULE_NAME        "cnic"
  57
  58 static char version[] =
  59         "Broadcom NetXtreme II CNIC Driver " CNIC_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  60
  61 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  62               "Chen (zongxi@broadcom.com");
  63 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
  64 MODULE_LICENSE("GPL");
  65 MODULE_VERSION(CNIC_MODULE_VERSION);
  66
  67 /* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
  68 static LIST_HEAD(cnic_dev_list);
  69 static LIST_HEAD(cnic_udev_list);
  70 static DEFINE_RWLOCK(cnic_dev_lock);
  71 static DEFINE_MUTEX(cnic_lock);
  72
  73 static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  74
  75 /* helper function, assuming cnic_lock is held */
  76 static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
  77 {
  78         return rcu_dereference_protected(cnic_ulp_tbl[type],
  79                                          lockdep_is_held(&cnic_lock));
  80 }
  81
  82 static int cnic_service_bnx2(void *, void *);
  83 static int cnic_service_bnx2x(void *, void *);
  84 static int cnic_ctl(void *, struct cnic_ctl_info *);
  85
  86 static struct cnic_ops cnic_bnx2_ops = {
  87         .cnic_owner     = THIS_MODULE,
  88         .cnic_handler   = cnic_service_bnx2,
  89         .cnic_ctl       = cnic_ctl,
  90 };
  91
  92 static struct cnic_ops cnic_bnx2x_ops = {
  93         .cnic_owner     = THIS_MODULE,
  94         .cnic_handler   = cnic_service_bnx2x,
  95         .cnic_ctl       = cnic_ctl,
  96 };
  97
  98 static struct workqueue_struct *cnic_wq;
  99
 100 static void cnic_shutdown_rings(struct cnic_dev *);
 101 static void cnic_init_rings(struct cnic_dev *);
 102 static int cnic_cm_set_pg(struct cnic_sock *);
 103
 104 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
 105 {
 106         struct cnic_uio_dev *udev = uinfo->priv;
 107         struct cnic_dev *dev;
 108
 109         if (!capable(CAP_NET_ADMIN))
 110                 return -EPERM;
 111
 112         if (udev->uio_dev != -1)
 113                 return -EBUSY;
 114
 115         rtnl_lock();
 116         dev = udev->dev;
 117
 118         if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 119                 rtnl_unlock();
 120                 return -ENODEV;
 121         }
 122
 123         udev->uio_dev = iminor(inode);
 124
 125         cnic_shutdown_rings(dev);
 126         cnic_init_rings(dev);
 127         rtnl_unlock();
 128
 129         return 0;
 130 }
 131
 132 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 133 {
 134         struct cnic_uio_dev *udev = uinfo->priv;
 135
 136         udev->uio_dev = -1;
 137         return 0;
 138 }
 139
 140 static inline void cnic_hold(struct cnic_dev *dev)
 141 {
 142         atomic_inc(&dev->ref_count);
 143 }
 144
 145 static inline void cnic_put(struct cnic_dev *dev)
 146 {
 147         atomic_dec(&dev->ref_count);
 148 }
 149
 150 static inline void csk_hold(struct cnic_sock *csk)
 151 {
 152         atomic_inc(&csk->ref_count);
 153 }
 154
 155 static inline void csk_put(struct cnic_sock *csk)
 156 {
 157         atomic_dec(&csk->ref_count);
 158 }
 159
 160 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 161 {
 162         struct cnic_dev *cdev;
 163
 164         read_lock(&cnic_dev_lock);
 165         list_for_each_entry(cdev, &cnic_dev_list, list) {
 166                 if (netdev == cdev->netdev) {
 167                         cnic_hold(cdev);
 168                         read_unlock(&cnic_dev_lock);
 169                         return cdev;
 170                 }
 171         }
 172         read_unlock(&cnic_dev_lock);
 173         return NULL;
 174 }
 175
 176 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 177 {
 178         atomic_inc(&ulp_ops->ref_count);
 179 }
 180
 181 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 182 {
 183         atomic_dec(&ulp_ops->ref_count);
 184 }
 185
 186 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 187 {
 188         struct cnic_local *cp = dev->cnic_priv;
 189         struct cnic_eth_dev *ethdev = cp->ethdev;
 190         struct drv_ctl_info info;
 191         struct drv_ctl_io *io = &info.data.io;
 192
 193         info.cmd = DRV_CTL_CTX_WR_CMD;
 194         io->cid_addr = cid_addr;
 195         io->offset = off;
 196         io->data = val;
 197         ethdev->drv_ctl(dev->netdev, &info);
 198 }
 199
 200 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 201 {
 202         struct cnic_local *cp = dev->cnic_priv;
 203         struct cnic_eth_dev *ethdev = cp->ethdev;
 204         struct drv_ctl_info info;
 205         struct drv_ctl_io *io = &info.data.io;
 206
 207         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 208         io->offset = off;
 209         io->dma_addr = addr;
 210         ethdev->drv_ctl(dev->netdev, &info);
 211 }
 212
 213 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 214 {
 215         struct cnic_local *cp = dev->cnic_priv;
 216         struct cnic_eth_dev *ethdev = cp->ethdev;
 217         struct drv_ctl_info info;
 218         struct drv_ctl_l2_ring *ring = &info.data.ring;
 219
 220         if (start)
 221                 info.cmd = DRV_CTL_START_L2_CMD;
 222         else
 223                 info.cmd = DRV_CTL_STOP_L2_CMD;
 224
 225         ring->cid = cid;
 226         ring->client_id = cl_id;
 227         ethdev->drv_ctl(dev->netdev, &info);
 228 }
 229
 230 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 231 {
 232         struct cnic_local *cp = dev->cnic_priv;
 233         struct cnic_eth_dev *ethdev = cp->ethdev;
 234         struct drv_ctl_info info;
 235         struct drv_ctl_io *io = &info.data.io;
 236
 237         info.cmd = DRV_CTL_IO_WR_CMD;
 238         io->offset = off;
 239         io->data = val;
 240         ethdev->drv_ctl(dev->netdev, &info);
 241 }
 242
 243 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 244 {
 245         struct cnic_local *cp = dev->cnic_priv;
 246         struct cnic_eth_dev *ethdev = cp->ethdev;
 247         struct drv_ctl_info info;
 248         struct drv_ctl_io *io = &info.data.io;
 249
 250         info.cmd = DRV_CTL_IO_RD_CMD;
 251         io->offset = off;
 252         ethdev->drv_ctl(dev->netdev, &info);
 253         return io->data;
 254 }
 255
 256 static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg)
 257 {
 258         struct cnic_local *cp = dev->cnic_priv;
 259         struct cnic_eth_dev *ethdev = cp->ethdev;
 260         struct drv_ctl_info info;
 261         struct fcoe_capabilities *fcoe_cap =
 262                 &info.data.register_data.fcoe_features;
 263
 264         if (reg) {
 265                 info.cmd = DRV_CTL_ULP_REGISTER_CMD;
 266                 if (ulp_type == CNIC_ULP_FCOE && dev->fcoe_cap)
 267                         memcpy(fcoe_cap, dev->fcoe_cap, sizeof(*fcoe_cap));
 268         } else {
 269                 info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;
 270         }
 271
 272         info.data.ulp_type = ulp_type;
 273         ethdev->drv_ctl(dev->netdev, &info);
 274 }
 275
 276 static int cnic_in_use(struct cnic_sock *csk)
 277 {
 278         return test_bit(SK_F_INUSE, &csk->flags);
 279 }
 280
 281 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
 282 {
 283         struct cnic_local *cp = dev->cnic_priv;
 284         struct cnic_eth_dev *ethdev = cp->ethdev;
 285         struct drv_ctl_info info;
 286
 287         info.cmd = cmd;
 288         info.data.credit.credit_count = count;
 289         ethdev->drv_ctl(dev->netdev, &info);
 290 }
 291
 292 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 293 {
 294         u32 i;
 295
 296         if (!cp->ctx_tbl)
 297                 return -EINVAL;
 298
 299         for (i = 0; i < cp->max_cid_space; i++) {
 300                 if (cp->ctx_tbl[i].cid == cid) {
 301                         *l5_cid = i;
 302                         return 0;
 303                 }
 304         }
 305         return -EINVAL;
 306 }
 307
 308 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 309                            struct cnic_sock *csk)
 310 {
 311         struct iscsi_path path_req;
 312         char *buf = NULL;
 313         u16 len = 0;
 314         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 315         struct cnic_ulp_ops *ulp_ops;
 316         struct cnic_uio_dev *udev = cp->udev;
 317         int rc = 0, retry = 0;
 318
 319         if (!udev || udev->uio_dev == -1)
 320                 return -ENODEV;
 321
 322         if (csk) {
 323                 len = sizeof(path_req);
 324                 buf = (char *) &path_req;
 325                 memset(&path_req, 0, len);
 326
 327                 msg_type = ISCSI_KEVENT_PATH_REQ;
 328                 path_req.handle = (u64) csk->l5_cid;
 329                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 330                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 331                                sizeof(struct in6_addr));
 332                         path_req.ip_addr_len = 16;
 333                 } else {
 334                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 335                                sizeof(struct in_addr));
 336                         path_req.ip_addr_len = 4;
 337                 }
 338                 path_req.vlan_id = csk->vlan_id;
 339                 path_req.pmtu = csk->mtu;
 340         }
 341
 342         while (retry < 3) {
 343                 rc = 0;
 344                 rcu_read_lock();
 345                 ulp_ops = rcu_dereference(cp->ulp_ops[CNIC_ULP_ISCSI]);
 346                 if (ulp_ops)
 347                         rc = ulp_ops->iscsi_nl_send_msg(
 348                                 cp->ulp_handle[CNIC_ULP_ISCSI],
 349                                 msg_type, buf, len);
 350                 rcu_read_unlock();
 351                 if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
 352                         break;
 353
 354                 msleep(100);
 355                 retry++;
 356         }
 357         return rc;
 358 }
 359
 360 static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
 361
 362 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 363                                   char *buf, u16 len)
 364 {
 365         int rc = -EINVAL;
 366
 367         switch (msg_type) {
 368         case ISCSI_UEVENT_PATH_UPDATE: {
 369                 struct cnic_local *cp;
 370                 u32 l5_cid;
 371                 struct cnic_sock *csk;
 372                 struct iscsi_path *path_resp;
 373
 374                 if (len < sizeof(*path_resp))
 375                         break;
 376
 377                 path_resp = (struct iscsi_path *) buf;
 378                 cp = dev->cnic_priv;
 379                 l5_cid = (u32) path_resp->handle;
 380                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 381                         break;
 382
 383                 rcu_read_lock();
 384                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
 385                         rc = -ENODEV;
 386                         rcu_read_unlock();
 387                         break;
 388                 }
 389                 csk = &cp->csk_tbl[l5_cid];
 390                 csk_hold(csk);
 391                 if (cnic_in_use(csk) &&
 392                     test_bit(SK_F_CONNECT_START, &csk->flags)) {
 393
 394                         csk->vlan_id = path_resp->vlan_id;
 395
 396                         memcpy(csk->ha, path_resp->mac_addr, ETH_ALEN);
 397                         if (test_bit(SK_F_IPV6, &csk->flags))
 398                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 399                                        sizeof(struct in6_addr));
 400                         else
 401                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 402                                        sizeof(struct in_addr));
 403
 404                         if (is_valid_ether_addr(csk->ha)) {
 405                                 cnic_cm_set_pg(csk);
 406                         } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
 407                                 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 408
 409                                 cnic_cm_upcall(cp, csk,
 410                                         L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
 411                                 clear_bit(SK_F_CONNECT_START, &csk->flags);
 412                         }
 413                 }
 414                 csk_put(csk);
 415                 rcu_read_unlock();
 416                 rc = 0;
 417         }
 418         }
 419
 420         return rc;
 421 }
 422
 423 static int cnic_offld_prep(struct cnic_sock *csk)
 424 {
 425         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 426                 return 0;
 427
 428         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 429                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 430                 return 0;
 431         }
 432
 433         return 1;
 434 }
 435
 436 static int cnic_close_prep(struct cnic_sock *csk)
 437 {
 438         clear_bit(SK_F_CONNECT_START, &csk->flags);
 439         smp_mb__after_clear_bit();
 440
 441         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 442                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 443                         msleep(1);
 444
 445                 return 1;
 446         }
 447         return 0;
 448 }
 449
 450 static int cnic_abort_prep(struct cnic_sock *csk)
 451 {
 452         clear_bit(SK_F_CONNECT_START, &csk->flags);
 453         smp_mb__after_clear_bit();
 454
 455         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 456                 msleep(1);
 457
 458         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 459                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 460                 return 1;
 461         }
 462
 463         return 0;
 464 }
 465
 466 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 467 {
 468         struct cnic_dev *dev;
 469
 470         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 471                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 472                 return -EINVAL;
 473         }
 474         mutex_lock(&cnic_lock);
 475         if (cnic_ulp_tbl_prot(ulp_type)) {
 476                 pr_err("%s: Type %d has already been registered\n",
 477                        __func__, ulp_type);
 478                 mutex_unlock(&cnic_lock);
 479                 return -EBUSY;
 480         }
 481
 482         read_lock(&cnic_dev_lock);
 483         list_for_each_entry(dev, &cnic_dev_list, list) {
 484                 struct cnic_local *cp = dev->cnic_priv;
 485
 486                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 487         }
 488         read_unlock(&cnic_dev_lock);
 489
 490         atomic_set(&ulp_ops->ref_count, 0);
 491         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 492         mutex_unlock(&cnic_lock);
 493
 494         /* Prevent race conditions with netdev_event */
 495         rtnl_lock();
 496         list_for_each_entry(dev, &cnic_dev_list, list) {
 497                 struct cnic_local *cp = dev->cnic_priv;
 498
 499                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 500                         ulp_ops->cnic_init(dev);
 501         }
 502         rtnl_unlock();
 503
 504         return 0;
 505 }
 506
 507 int cnic_unregister_driver(int ulp_type)
 508 {
 509         struct cnic_dev *dev;
 510         struct cnic_ulp_ops *ulp_ops;
 511         int i = 0;
 512
 513         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 514                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 515                 return -EINVAL;
 516         }
 517         mutex_lock(&cnic_lock);
 518         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 519         if (!ulp_ops) {
 520                 pr_err("%s: Type %d has not been registered\n",
 521                        __func__, ulp_type);
 522                 goto out_unlock;
 523         }
 524         read_lock(&cnic_dev_lock);
 525         list_for_each_entry(dev, &cnic_dev_list, list) {
 526                 struct cnic_local *cp = dev->cnic_priv;
 527
 528                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 529                         pr_err("%s: Type %d still has devices registered\n",
 530                                __func__, ulp_type);
 531                         read_unlock(&cnic_dev_lock);
 532                         goto out_unlock;
 533                 }
 534         }
 535         read_unlock(&cnic_dev_lock);
 536
 537         RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);
 538
 539         mutex_unlock(&cnic_lock);
 540         synchronize_rcu();
 541         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 542                 msleep(100);
 543                 i++;
 544         }
 545
 546         if (atomic_read(&ulp_ops->ref_count) != 0)
 547                 pr_warn("%s: Failed waiting for ref count to go to zero\n",
 548                         __func__);
 549         return 0;
 550
 551 out_unlock:
 552         mutex_unlock(&cnic_lock);
 553         return -EINVAL;
 554 }
 555
 556 static int cnic_start_hw(struct cnic_dev *);
 557 static void cnic_stop_hw(struct cnic_dev *);
 558
 559 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 560                                 void *ulp_ctx)
 561 {
 562         struct cnic_local *cp = dev->cnic_priv;
 563         struct cnic_ulp_ops *ulp_ops;
 564
 565         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 566                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 567                 return -EINVAL;
 568         }
 569         mutex_lock(&cnic_lock);
 570         if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
 571                 pr_err("%s: Driver with type %d has not been registered\n",
 572                        __func__, ulp_type);
 573                 mutex_unlock(&cnic_lock);
 574                 return -EAGAIN;
 575         }
 576         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 577                 pr_err("%s: Type %d has already been registered to this device\n",
 578                        __func__, ulp_type);
 579                 mutex_unlock(&cnic_lock);
 580                 return -EBUSY;
 581         }
 582
 583         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 584         cp->ulp_handle[ulp_type] = ulp_ctx;
 585         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 586         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 587         cnic_hold(dev);
 588
 589         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 590                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 591                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 592
 593         mutex_unlock(&cnic_lock);
 594
 595         cnic_ulp_ctl(dev, ulp_type, true);
 596
 597         return 0;
 598
 599 }
 600 EXPORT_SYMBOL(cnic_register_driver);
 601
 602 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 603 {
 604         struct cnic_local *cp = dev->cnic_priv;
 605         int i = 0;
 606
 607         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 608                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 609                 return -EINVAL;
 610         }
 611         mutex_lock(&cnic_lock);
 612         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 613                 RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
 614                 cnic_put(dev);
 615         } else {
 616                 pr_err("%s: device not registered to this ulp type %d\n",
 617                        __func__, ulp_type);
 618                 mutex_unlock(&cnic_lock);
 619                 return -EINVAL;
 620         }
 621         mutex_unlock(&cnic_lock);
 622
 623         if (ulp_type == CNIC_ULP_ISCSI)
 624                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 625         else if (ulp_type == CNIC_ULP_FCOE)
 626                 dev->fcoe_cap = NULL;
 627
 628         synchronize_rcu();
 629
 630         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 631                i < 20) {
 632                 msleep(100);
 633                 i++;
 634         }
 635         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 636                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 637
 638         cnic_ulp_ctl(dev, ulp_type, false);
 639
 640         return 0;
 641 }
 642 EXPORT_SYMBOL(cnic_unregister_driver);
 643
 644 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
 645                             u32 next)
 646 {
 647         id_tbl->start = start_id;
 648         id_tbl->max = size;
 649         id_tbl->next = next;
 650         spin_lock_init(&id_tbl->lock);
 651         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 652         if (!id_tbl->table)
 653                 return -ENOMEM;
 654
 655         return 0;
 656 }
 657
 658 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 659 {
 660         kfree(id_tbl->table);
 661         id_tbl->table = NULL;
 662 }
 663
 664 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 665 {
 666         int ret = -1;
 667
 668         id -= id_tbl->start;
 669         if (id >= id_tbl->max)
 670                 return ret;
 671
 672         spin_lock(&id_tbl->lock);
 673         if (!test_bit(id, id_tbl->table)) {
 674                 set_bit(id, id_tbl->table);
 675                 ret = 0;
 676         }
 677         spin_unlock(&id_tbl->lock);
 678         return ret;
 679 }
 680
 681 /* Returns -1 if not successful */
 682 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 683 {
 684         u32 id;
 685
 686         spin_lock(&id_tbl->lock);
 687         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 688         if (id >= id_tbl->max) {
 689                 id = -1;
 690                 if (id_tbl->next != 0) {
 691                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 692                         if (id >= id_tbl->next)
 693                                 id = -1;
 694                 }
 695         }
 696
 697         if (id < id_tbl->max) {
 698                 set_bit(id, id_tbl->table);
 699                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 700                 id += id_tbl->start;
 701         }
 702
 703         spin_unlock(&id_tbl->lock);
 704
 705         return id;
 706 }
 707
 708 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 709 {
 710         if (id == -1)
 711                 return;
 712
 713         id -= id_tbl->start;
 714         if (id >= id_tbl->max)
 715                 return;
 716
 717         clear_bit(id, id_tbl->table);
 718 }
 719
 720 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 721 {
 722         int i;
 723
 724         if (!dma->pg_arr)
 725                 return;
 726
 727         for (i = 0; i < dma->num_pages; i++) {
 728                 if (dma->pg_arr[i]) {
 729                         dma_free_coherent(&dev->pcidev->dev, CNIC_PAGE_SIZE,
 730                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 731                         dma->pg_arr[i] = NULL;
 732                 }
 733         }
 734         if (dma->pgtbl) {
 735                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 736                                   dma->pgtbl, dma->pgtbl_map);
 737                 dma->pgtbl = NULL;
 738         }
 739         kfree(dma->pg_arr);
 740         dma->pg_arr = NULL;
 741         dma->num_pages = 0;
 742 }
 743
 744 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 745 {
 746         int i;
 747         __le32 *page_table = (__le32 *) dma->pgtbl;
 748
 749         for (i = 0; i < dma->num_pages; i++) {
 750                 /* Each entry needs to be in big endian format. */
 751                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 752                 page_table++;
 753                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 754                 page_table++;
 755         }
 756 }
 757
 758 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 759 {
 760         int i;
 761         __le32 *page_table = (__le32 *) dma->pgtbl;
 762
 763         for (i = 0; i < dma->num_pages; i++) {
 764                 /* Each entry needs to be in little endian format. */
 765                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 766                 page_table++;
 767                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 768                 page_table++;
 769         }
 770 }
 771
 772 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 773                           int pages, int use_pg_tbl)
 774 {
 775         int i, size;
 776         struct cnic_local *cp = dev->cnic_priv;
 777
 778         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 779         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 780         if (dma->pg_arr == NULL)
 781                 return -ENOMEM;
 782
 783         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 784         dma->num_pages = pages;
 785
 786         for (i = 0; i < pages; i++) {
 787                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 788                                                     CNIC_PAGE_SIZE,
 789                                                     &dma->pg_map_arr[i],
 790                                                     GFP_ATOMIC);
 791                 if (dma->pg_arr[i] == NULL)
 792                         goto error;
 793         }
 794         if (!use_pg_tbl)
 795                 return 0;
 796
 797         dma->pgtbl_size = ((pages * 8) + CNIC_PAGE_SIZE - 1) &
 798                           ~(CNIC_PAGE_SIZE - 1);
 799         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 800                                         &dma->pgtbl_map, GFP_ATOMIC);
 801         if (dma->pgtbl == NULL)
 802                 goto error;
 803
 804         cp->setup_pgtbl(dev, dma);
 805
 806         return 0;
 807
 808 error:
 809         cnic_free_dma(dev, dma);
 810         return -ENOMEM;
 811 }
 812
 813 static void cnic_free_context(struct cnic_dev *dev)
 814 {
 815         struct cnic_local *cp = dev->cnic_priv;
 816         int i;
 817
 818         for (i = 0; i < cp->ctx_blks; i++) {
 819                 if (cp->ctx_arr[i].ctx) {
 820                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 821                                           cp->ctx_arr[i].ctx,
 822                                           cp->ctx_arr[i].mapping);
 823                         cp->ctx_arr[i].ctx = NULL;
 824                 }
 825         }
 826 }
 827
 828 static void __cnic_free_uio_rings(struct cnic_uio_dev *udev)
 829 {
 830         if (udev->l2_buf) {
 831                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 832                                   udev->l2_buf, udev->l2_buf_map);
 833                 udev->l2_buf = NULL;
 834         }
 835
 836         if (udev->l2_ring) {
 837                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 838                                   udev->l2_ring, udev->l2_ring_map);
 839                 udev->l2_ring = NULL;
 840         }
 841
 842 }
 843
 844 static void __cnic_free_uio(struct cnic_uio_dev *udev)
 845 {
 846         uio_unregister_device(&udev->cnic_uinfo);
 847
 848         __cnic_free_uio_rings(udev);
 849
 850         pci_dev_put(udev->pdev);
 851         kfree(udev);
 852 }
 853
 854 static void cnic_free_uio(struct cnic_uio_dev *udev)
 855 {
 856         if (!udev)
 857                 return;
 858
 859         write_lock(&cnic_dev_lock);
 860         list_del_init(&udev->list);
 861         write_unlock(&cnic_dev_lock);
 862         __cnic_free_uio(udev);
 863 }
 864
 865 static void cnic_free_resc(struct cnic_dev *dev)
 866 {
 867         struct cnic_local *cp = dev->cnic_priv;
 868         struct cnic_uio_dev *udev = cp->udev;
 869
 870         if (udev) {
 871                 udev->dev = NULL;
 872                 cp->udev = NULL;
 873                 if (udev->uio_dev == -1)
 874                         __cnic_free_uio_rings(udev);
 875         }
 876
 877         cnic_free_context(dev);
 878         kfree(cp->ctx_arr);
 879         cp->ctx_arr = NULL;
 880         cp->ctx_blks = 0;
 881
 882         cnic_free_dma(dev, &cp->gbl_buf_info);
 883         cnic_free_dma(dev, &cp->kwq_info);
 884         cnic_free_dma(dev, &cp->kwq_16_data_info);
 885         cnic_free_dma(dev, &cp->kcq2.dma);
 886         cnic_free_dma(dev, &cp->kcq1.dma);
 887         kfree(cp->iscsi_tbl);
 888         cp->iscsi_tbl = NULL;
 889         kfree(cp->ctx_tbl);
 890         cp->ctx_tbl = NULL;
 891
 892         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
 893         cnic_free_id_tbl(&cp->cid_tbl);
 894 }
 895
 896 static int cnic_alloc_context(struct cnic_dev *dev)
 897 {
 898         struct cnic_local *cp = dev->cnic_priv;
 899
 900         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
 901                 int i, k, arr_size;
 902
 903                 cp->ctx_blk_size = CNIC_PAGE_SIZE;
 904                 cp->cids_per_blk = CNIC_PAGE_SIZE / 128;
 905                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 906                            sizeof(struct cnic_ctx);
 907                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 908                 if (cp->ctx_arr == NULL)
 909                         return -ENOMEM;
 910
 911                 k = 0;
 912                 for (i = 0; i < 2; i++) {
 913                         u32 j, reg, off, lo, hi;
 914
 915                         if (i == 0)
 916                                 off = BNX2_PG_CTX_MAP;
 917                         else
 918                                 off = BNX2_ISCSI_CTX_MAP;
 919
 920                         reg = cnic_reg_rd_ind(dev, off);
 921                         lo = reg >> 16;
 922                         hi = reg & 0xffff;
 923                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 924                                 cp->ctx_arr[k].cid = j;
 925                 }
 926
 927                 cp->ctx_blks = k;
 928                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 929                         cp->ctx_blks = 0;
 930                         return -ENOMEM;
 931                 }
 932
 933                 for (i = 0; i < cp->ctx_blks; i++) {
 934                         cp->ctx_arr[i].ctx =
 935                                 dma_alloc_coherent(&dev->pcidev->dev,
 936                                                    CNIC_PAGE_SIZE,
 937                                                    &cp->ctx_arr[i].mapping,
 938                                                    GFP_KERNEL);
 939                         if (cp->ctx_arr[i].ctx == NULL)
 940                                 return -ENOMEM;
 941                 }
 942         }
 943         return 0;
 944 }
 945
 946 static u16 cnic_bnx2_next_idx(u16 idx)
 947 {
 948         return idx + 1;
 949 }
 950
 951 static u16 cnic_bnx2_hw_idx(u16 idx)
 952 {
 953         return idx;
 954 }
 955
 956 static u16 cnic_bnx2x_next_idx(u16 idx)
 957 {
 958         idx++;
 959         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 960                 idx++;
 961
 962         return idx;
 963 }
 964
 965 static u16 cnic_bnx2x_hw_idx(u16 idx)
 966 {
 967         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 968                 idx++;
 969         return idx;
 970 }
 971
 972 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
 973                           bool use_pg_tbl)
 974 {
 975         int err, i, use_page_tbl = 0;
 976         struct kcqe **kcq;
 977
 978         if (use_pg_tbl)
 979                 use_page_tbl = 1;
 980
 981         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
 982         if (err)
 983                 return err;
 984
 985         kcq = (struct kcqe **) info->dma.pg_arr;
 986         info->kcq = kcq;
 987
 988         info->next_idx = cnic_bnx2_next_idx;
 989         info->hw_idx = cnic_bnx2_hw_idx;
 990         if (use_pg_tbl)
 991                 return 0;
 992
 993         info->next_idx = cnic_bnx2x_next_idx;
 994         info->hw_idx = cnic_bnx2x_hw_idx;
 995
 996         for (i = 0; i < KCQ_PAGE_CNT; i++) {
 997                 struct bnx2x_bd_chain_next *next =
 998                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
 999                 int j = i + 1;
1000
1001                 if (j >= KCQ_PAGE_CNT)
1002                         j = 0;
1003                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
1004                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
1005         }
1006         return 0;
1007 }
1008
1009 static int __cnic_alloc_uio_rings(struct cnic_uio_dev *udev, int pages)
1010 {
1011         struct cnic_local *cp = udev->dev->cnic_priv;
1012
1013         if (udev->l2_ring)
1014                 return 0;
1015
1016         udev->l2_ring_size = pages * CNIC_PAGE_SIZE;
1017         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
1018                                            &udev->l2_ring_map,
1019                                            GFP_KERNEL | __GFP_COMP);
1020         if (!udev->l2_ring)
1021                 return -ENOMEM;
1022
1023         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
1024         udev->l2_buf_size = CNIC_PAGE_ALIGN(udev->l2_buf_size);
1025         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1026                                           &udev->l2_buf_map,
1027                                           GFP_KERNEL | __GFP_COMP);
1028         if (!udev->l2_buf) {
1029                 __cnic_free_uio_rings(udev);
1030                 return -ENOMEM;
1031         }
1032
1033         return 0;
1034
1035 }
1036
1037 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
1038 {
1039         struct cnic_local *cp = dev->cnic_priv;
1040         struct cnic_uio_dev *udev;
1041
1042         read_lock(&cnic_dev_lock);
1043         list_for_each_entry(udev, &cnic_udev_list, list) {
1044                 if (udev->pdev == dev->pcidev) {
1045                         udev->dev = dev;
1046                         if (__cnic_alloc_uio_rings(udev, pages)) {
1047                                 udev->dev = NULL;
1048                                 read_unlock(&cnic_dev_lock);
1049                                 return -ENOMEM;
1050                         }
1051                         cp->udev = udev;
1052                         read_unlock(&cnic_dev_lock);
1053                         return 0;
1054                 }
1055         }
1056         read_unlock(&cnic_dev_lock);
1057
1058         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
1059         if (!udev)
1060                 return -ENOMEM;
1061
1062         udev->uio_dev = -1;
1063
1064         udev->dev = dev;
1065         udev->pdev = dev->pcidev;
1066
1067         if (__cnic_alloc_uio_rings(udev, pages))
1068                 goto err_udev;
1069
1070         write_lock(&cnic_dev_lock);
1071         list_add(&udev->list, &cnic_udev_list);
1072         write_unlock(&cnic_dev_lock);
1073
1074         pci_dev_get(udev->pdev);
1075
1076         cp->udev = udev;
1077
1078         return 0;
1079
1080  err_udev:
1081         kfree(udev);
1082         return -ENOMEM;
1083 }
1084
1085 static int cnic_init_uio(struct cnic_dev *dev)
1086 {
1087         struct cnic_local *cp = dev->cnic_priv;
1088         struct cnic_uio_dev *udev = cp->udev;
1089         struct uio_info *uinfo;
1090         int ret = 0;
1091
1092         if (!udev)
1093                 return -ENOMEM;
1094
1095         uinfo = &udev->cnic_uinfo;
1096
1097         uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
1098         uinfo->mem[0].internal_addr = dev->regview;
1099         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1100
1101         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1102                 uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
1103                                                      TX_MAX_TSS_RINGS + 1);
1104                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1105                                         CNIC_PAGE_MASK;
1106                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1107                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1108                 else
1109                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1110
1111                 uinfo->name = "bnx2_cnic";
1112         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1113                 uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);
1114
1115                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1116                         CNIC_PAGE_MASK;
1117                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1118
1119                 uinfo->name = "bnx2x_cnic";
1120         }
1121
1122         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1123
1124         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1125         uinfo->mem[2].size = udev->l2_ring_size;
1126         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1127
1128         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1129         uinfo->mem[3].size = udev->l2_buf_size;
1130         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1131
1132         uinfo->version = CNIC_MODULE_VERSION;
1133         uinfo->irq = UIO_IRQ_CUSTOM;
1134
1135         uinfo->open = cnic_uio_open;
1136         uinfo->release = cnic_uio_close;
1137
1138         if (udev->uio_dev == -1) {
1139                 if (!uinfo->priv) {
1140                         uinfo->priv = udev;
1141
1142                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1143                 }
1144         } else {
1145                 cnic_init_rings(dev);
1146         }
1147
1148         return ret;
1149 }
1150
1151 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1152 {
1153         struct cnic_local *cp = dev->cnic_priv;
1154         int ret;
1155
1156         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1157         if (ret)
1158                 goto error;
1159         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1160
1161         ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1162         if (ret)
1163                 goto error;
1164
1165         ret = cnic_alloc_context(dev);
1166         if (ret)
1167                 goto error;
1168
1169         ret = cnic_alloc_uio_rings(dev, 2);
1170         if (ret)
1171                 goto error;
1172
1173         ret = cnic_init_uio(dev);
1174         if (ret)
1175                 goto error;
1176
1177         return 0;
1178
1179 error:
1180         cnic_free_resc(dev);
1181         return ret;
1182 }
1183
1184 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1185 {
1186         struct cnic_local *cp = dev->cnic_priv;
1187         struct bnx2x *bp = netdev_priv(dev->netdev);
1188         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1189         int total_mem, blks, i;
1190
1191         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1192         blks = total_mem / ctx_blk_size;
1193         if (total_mem % ctx_blk_size)
1194                 blks++;
1195
1196         if (blks > cp->ethdev->ctx_tbl_len)
1197                 return -ENOMEM;
1198
1199         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1200         if (cp->ctx_arr == NULL)
1201                 return -ENOMEM;
1202
1203         cp->ctx_blks = blks;
1204         cp->ctx_blk_size = ctx_blk_size;
1205         if (!CHIP_IS_E1(bp))
1206                 cp->ctx_align = 0;
1207         else
1208                 cp->ctx_align = ctx_blk_size;
1209
1210         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1211
1212         for (i = 0; i < blks; i++) {
1213                 cp->ctx_arr[i].ctx =
1214                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1215                                            &cp->ctx_arr[i].mapping,
1216                                            GFP_KERNEL);
1217                 if (cp->ctx_arr[i].ctx == NULL)
1218                         return -ENOMEM;
1219
1220                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1221                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1222                                 cnic_free_context(dev);
1223                                 cp->ctx_blk_size += cp->ctx_align;
1224                                 i = -1;
1225                                 continue;
1226                         }
1227                 }
1228         }
1229         return 0;
1230 }
1231
1232 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1233 {
1234         struct cnic_local *cp = dev->cnic_priv;
1235         struct bnx2x *bp = netdev_priv(dev->netdev);
1236         struct cnic_eth_dev *ethdev = cp->ethdev;
1237         u32 start_cid = ethdev->starting_cid;
1238         int i, j, n, ret, pages;
1239         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1240
1241         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1242         cp->iscsi_start_cid = start_cid;
1243         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1244
1245         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
1246                 cp->max_cid_space += dev->max_fcoe_conn;
1247                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1248                 if (!cp->fcoe_init_cid)
1249                         cp->fcoe_init_cid = 0x10;
1250         }
1251
1252         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1253                                 GFP_KERNEL);
1254         if (!cp->iscsi_tbl)
1255                 goto error;
1256
1257         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1258                                 cp->max_cid_space, GFP_KERNEL);
1259         if (!cp->ctx_tbl)
1260                 goto error;
1261
1262         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1263                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1264                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1265         }
1266
1267         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1268                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1269
1270         pages = CNIC_PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1271                 CNIC_PAGE_SIZE;
1272
1273         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1274         if (ret)
1275                 return -ENOMEM;
1276
1277         n = CNIC_PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1278         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1279                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1280
1281                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1282                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1283                                                    off;
1284
1285                 if ((i % n) == (n - 1))
1286                         j++;
1287         }
1288
1289         ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1290         if (ret)
1291                 goto error;
1292
1293         if (CNIC_SUPPORTS_FCOE(bp)) {
1294                 ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1295                 if (ret)
1296                         goto error;
1297         }
1298
1299         pages = CNIC_PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / CNIC_PAGE_SIZE;
1300         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1301         if (ret)
1302                 goto error;
1303
1304         ret = cnic_alloc_bnx2x_context(dev);
1305         if (ret)
1306                 goto error;
1307
1308         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
1309                 return 0;
1310
1311         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1312
1313         cp->l2_rx_ring_size = 15;
1314
1315         ret = cnic_alloc_uio_rings(dev, 4);
1316         if (ret)
1317                 goto error;
1318
1319         ret = cnic_init_uio(dev);
1320         if (ret)
1321                 goto error;
1322
1323         return 0;
1324
1325 error:
1326         cnic_free_resc(dev);
1327         return -ENOMEM;
1328 }
1329
1330 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1331 {
1332         return cp->max_kwq_idx -
1333                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1334 }
1335
1336 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1337                                   u32 num_wqes)
1338 {
1339         struct cnic_local *cp = dev->cnic_priv;
1340         struct kwqe *prod_qe;
1341         u16 prod, sw_prod, i;
1342
1343         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1344                 return -EAGAIN;         /* bnx2 is down */
1345
1346         spin_lock_bh(&cp->cnic_ulp_lock);
1347         if (num_wqes > cnic_kwq_avail(cp) &&
1348             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1349                 spin_unlock_bh(&cp->cnic_ulp_lock);
1350                 return -EAGAIN;
1351         }
1352
1353         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1354
1355         prod = cp->kwq_prod_idx;
1356         sw_prod = prod & MAX_KWQ_IDX;
1357         for (i = 0; i < num_wqes; i++) {
1358                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1359                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1360                 prod++;
1361                 sw_prod = prod & MAX_KWQ_IDX;
1362         }
1363         cp->kwq_prod_idx = prod;
1364
1365         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1366
1367         spin_unlock_bh(&cp->cnic_ulp_lock);
1368         return 0;
1369 }
1370
1371 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1372                                    union l5cm_specific_data *l5_data)
1373 {
1374         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1375         dma_addr_t map;
1376
1377         map = ctx->kwqe_data_mapping;
1378         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1379         l5_data->phy_address.hi = (u64) map >> 32;
1380         return ctx->kwqe_data;
1381 }
1382
1383 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1384                                 u32 type, union l5cm_specific_data *l5_data)
1385 {
1386         struct cnic_local *cp = dev->cnic_priv;
1387         struct bnx2x *bp = netdev_priv(dev->netdev);
1388         struct l5cm_spe kwqe;
1389         struct kwqe_16 *kwq[1];
1390         u16 type_16;
1391         int ret;
1392
1393         kwqe.hdr.conn_and_cmd_data =
1394                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1395                              BNX2X_HW_CID(bp, cid)));
1396
1397         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1398         type_16 |= (bp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1399                    SPE_HDR_FUNCTION_ID;
1400
1401         kwqe.hdr.type = cpu_to_le16(type_16);
1402         kwqe.hdr.reserved1 = 0;
1403         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1404         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1405
1406         kwq[0] = (struct kwqe_16 *) &kwqe;
1407
1408         spin_lock_bh(&cp->cnic_ulp_lock);
1409         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1410         spin_unlock_bh(&cp->cnic_ulp_lock);
1411
1412         if (ret == 1)
1413                 return 0;
1414
1415         return ret;
1416 }
1417
1418 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1419                                    struct kcqe *cqes[], u32 num_cqes)
1420 {
1421         struct cnic_local *cp = dev->cnic_priv;
1422         struct cnic_ulp_ops *ulp_ops;
1423
1424         rcu_read_lock();
1425         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1426         if (likely(ulp_ops)) {
1427                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1428                                           cqes, num_cqes);
1429         }
1430         rcu_read_unlock();
1431 }
1432
1433 static void cnic_bnx2x_set_tcp_options(struct cnic_dev *dev, int time_stamps,
1434                                        int en_tcp_dack)
1435 {
1436         struct bnx2x *bp = netdev_priv(dev->netdev);
1437         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1438         u16 tstorm_flags = 0;
1439
1440         if (time_stamps) {
1441                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1442                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1443         }
1444         if (en_tcp_dack)
1445                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_DELAYED_ACK_EN;
1446
1447         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1448                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), xstorm_flags);
1449
1450         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1451                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), tstorm_flags);
1452 }
1453
1454 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1455 {
1456         struct cnic_local *cp = dev->cnic_priv;
1457         struct bnx2x *bp = netdev_priv(dev->netdev);
1458         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1459         int hq_bds, pages;
1460         u32 pfid = bp->pfid;
1461
1462         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1463         cp->num_ccells = req1->num_ccells_per_conn;
1464         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1465                               cp->num_iscsi_tasks;
1466         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1467                         BNX2X_ISCSI_R2TQE_SIZE;
1468         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1469         pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1470         hq_bds = pages * (CNIC_PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1471         cp->num_cqs = req1->num_cqs;
1472
1473         if (!dev->max_iscsi_conn)
1474                 return 0;
1475
1476         /* init Tstorm RAM */
1477         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1478                   req1->rq_num_wqes);
1479         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1480                   CNIC_PAGE_SIZE);
1481         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1482                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1483         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1484                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1485                   req1->num_tasks_per_conn);
1486
1487         /* init Ustorm RAM */
1488         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1489                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1490                   req1->rq_buffer_size);
1491         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1492                   CNIC_PAGE_SIZE);
1493         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1494                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1495         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1496                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1497                   req1->num_tasks_per_conn);
1498         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1499                   req1->rq_num_wqes);
1500         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1501                   req1->cq_num_wqes);
1502         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1503                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1504
1505         /* init Xstorm RAM */
1506         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1507                   CNIC_PAGE_SIZE);
1508         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1509                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1510         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1511                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1512                   req1->num_tasks_per_conn);
1513         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1514                   hq_bds);
1515         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1516                   req1->num_tasks_per_conn);
1517         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1518                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1519
1520         /* init Cstorm RAM */
1521         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1522                   CNIC_PAGE_SIZE);
1523         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1524                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1525         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1526                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1527                   req1->num_tasks_per_conn);
1528         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1529                   req1->cq_num_wqes);
1530         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1531                   hq_bds);
1532
1533         cnic_bnx2x_set_tcp_options(dev,
1534                         req1->flags & ISCSI_KWQE_INIT1_TIME_STAMPS_ENABLE,
1535                         req1->flags & ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE);
1536
1537         return 0;
1538 }
1539
1540 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1541 {
1542         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1543         struct bnx2x *bp = netdev_priv(dev->netdev);
1544         u32 pfid = bp->pfid;
1545         struct iscsi_kcqe kcqe;
1546         struct kcqe *cqes[1];
1547
1548         memset(&kcqe, 0, sizeof(kcqe));
1549         if (!dev->max_iscsi_conn) {
1550                 kcqe.completion_status =
1551                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1552                 goto done;
1553         }
1554
1555         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1556                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1557         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1558                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1559                 req2->error_bit_map[1]);
1560
1561         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1562                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1563         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1564                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1565         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1566                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1567                 req2->error_bit_map[1]);
1568
1569         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1570                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1571
1572         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1573
1574 done:
1575         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1576         cqes[0] = (struct kcqe *) &kcqe;
1577         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1578
1579         return 0;
1580 }
1581
1582 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1583 {
1584         struct cnic_local *cp = dev->cnic_priv;
1585         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1586
1587         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1588                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1589
1590                 cnic_free_dma(dev, &iscsi->hq_info);
1591                 cnic_free_dma(dev, &iscsi->r2tq_info);
1592                 cnic_free_dma(dev, &iscsi->task_array_info);
1593                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1594         } else {
1595                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1596         }
1597
1598         ctx->cid = 0;
1599 }
1600
1601 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1602 {
1603         u32 cid;
1604         int ret, pages;
1605         struct cnic_local *cp = dev->cnic_priv;
1606         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1607         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1608
1609         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1610                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1611                 if (cid == -1) {
1612                         ret = -ENOMEM;
1613                         goto error;
1614                 }
1615                 ctx->cid = cid;
1616                 return 0;
1617         }
1618
1619         cid = cnic_alloc_new_id(&cp->cid_tbl);
1620         if (cid == -1) {
1621                 ret = -ENOMEM;
1622                 goto error;
1623         }
1624
1625         ctx->cid = cid;
1626         pages = CNIC_PAGE_ALIGN(cp->task_array_size) / CNIC_PAGE_SIZE;
1627
1628         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1629         if (ret)
1630                 goto error;
1631
1632         pages = CNIC_PAGE_ALIGN(cp->r2tq_size) / CNIC_PAGE_SIZE;
1633         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1634         if (ret)
1635                 goto error;
1636
1637         pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1638         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1639         if (ret)
1640                 goto error;
1641
1642         return 0;
1643
1644 error:
1645         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1646         return ret;
1647 }
1648
1649 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1650                                 struct regpair *ctx_addr)
1651 {
1652         struct cnic_local *cp = dev->cnic_priv;
1653         struct cnic_eth_dev *ethdev = cp->ethdev;
1654         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1655         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1656         unsigned long align_off = 0;
1657         dma_addr_t ctx_map;
1658         void *ctx;
1659
1660         if (cp->ctx_align) {
1661                 unsigned long mask = cp->ctx_align - 1;
1662
1663                 if (cp->ctx_arr[blk].mapping & mask)
1664                         align_off = cp->ctx_align -
1665                                     (cp->ctx_arr[blk].mapping & mask);
1666         }
1667         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1668                 (off * BNX2X_CONTEXT_MEM_SIZE);
1669         ctx = cp->ctx_arr[blk].ctx + align_off +
1670               (off * BNX2X_CONTEXT_MEM_SIZE);
1671         if (init)
1672                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1673
1674         ctx_addr->lo = ctx_map & 0xffffffff;
1675         ctx_addr->hi = (u64) ctx_map >> 32;
1676         return ctx;
1677 }
1678
1679 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1680                                 u32 num)
1681 {
1682         struct cnic_local *cp = dev->cnic_priv;
1683         struct bnx2x *bp = netdev_priv(dev->netdev);
1684         struct iscsi_kwqe_conn_offload1 *req1 =
1685                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1686         struct iscsi_kwqe_conn_offload2 *req2 =
1687                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1688         struct iscsi_kwqe_conn_offload3 *req3;
1689         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1690         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1691         u32 cid = ctx->cid;
1692         u32 hw_cid = BNX2X_HW_CID(bp, cid);
1693         struct iscsi_context *ictx;
1694         struct regpair context_addr;
1695         int i, j, n = 2, n_max;
1696         u8 port = BP_PORT(bp);
1697
1698         ctx->ctx_flags = 0;
1699         if (!req2->num_additional_wqes)
1700                 return -EINVAL;
1701
1702         n_max = req2->num_additional_wqes + 2;
1703
1704         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1705         if (ictx == NULL)
1706                 return -ENOMEM;
1707
1708         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1709
1710         ictx->xstorm_ag_context.hq_prod = 1;
1711
1712         ictx->xstorm_st_context.iscsi.first_burst_length =
1713                 ISCSI_DEF_FIRST_BURST_LEN;
1714         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1715                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1716         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1717                 req1->sq_page_table_addr_lo;
1718         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1719                 req1->sq_page_table_addr_hi;
1720         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1721         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1722         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1723                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1724         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1725                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1726         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1727                 iscsi->hq_info.pgtbl[0];
1728         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1729                 iscsi->hq_info.pgtbl[1];
1730         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1731                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1732         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1733                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1734         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1735                 iscsi->r2tq_info.pgtbl[0];
1736         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1737                 iscsi->r2tq_info.pgtbl[1];
1738         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1739                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1740         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1741                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1742         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1743                 BNX2X_ISCSI_PBL_NOT_CACHED;
1744         ictx->xstorm_st_context.iscsi.flags.flags |=
1745                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1746         ictx->xstorm_st_context.iscsi.flags.flags |=
1747                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1748         ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1749                 ETH_P_8021Q;
1750         if (BNX2X_CHIP_IS_E2_PLUS(bp) &&
1751             bp->common.chip_port_mode == CHIP_2_PORT_MODE) {
1752
1753                 port = 0;
1754         }
1755         ictx->xstorm_st_context.common.flags =
1756                 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1757         ictx->xstorm_st_context.common.flags =
1758                 port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1759
1760         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1761         /* TSTORM requires the base address of RQ DB & not PTE */
1762         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1763                 req2->rq_page_table_addr_lo & CNIC_PAGE_MASK;
1764         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1765                 req2->rq_page_table_addr_hi;
1766         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1767         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1768         ictx->tstorm_st_context.tcp.flags2 |=
1769                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1770         ictx->tstorm_st_context.tcp.ooo_support_mode =
1771                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1772
1773         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1774
1775         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1776                 req2->rq_page_table_addr_lo;
1777         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1778                 req2->rq_page_table_addr_hi;
1779         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1780         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1781         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1782                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1783         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1784                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1785         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1786                 iscsi->r2tq_info.pgtbl[0];
1787         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1788                 iscsi->r2tq_info.pgtbl[1];
1789         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1790                 req1->cq_page_table_addr_lo;
1791         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1792                 req1->cq_page_table_addr_hi;
1793         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1794         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1795         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1796         ictx->ustorm_st_context.task_pbe_cache_index =
1797                 BNX2X_ISCSI_PBL_NOT_CACHED;
1798         ictx->ustorm_st_context.task_pdu_cache_index =
1799                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1800
1801         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1802                 if (j == 3) {
1803                         if (n >= n_max)
1804                                 break;
1805                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1806                         j = 0;
1807                 }
1808                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1809                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1810                         req3->qp_first_pte[j].hi;
1811                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1812                         req3->qp_first_pte[j].lo;
1813         }
1814
1815         ictx->ustorm_st_context.task_pbl_base.lo =
1816                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1817         ictx->ustorm_st_context.task_pbl_base.hi =
1818                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1819         ictx->ustorm_st_context.tce_phy_addr.lo =
1820                 iscsi->task_array_info.pgtbl[0];
1821         ictx->ustorm_st_context.tce_phy_addr.hi =
1822                 iscsi->task_array_info.pgtbl[1];
1823         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1824         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1825         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1826         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1827                 ISCSI_DEF_MAX_BURST_LEN;
1828         ictx->ustorm_st_context.negotiated_rx |=
1829                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1830                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1831
1832         ictx->cstorm_st_context.hq_pbl_base.lo =
1833                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1834         ictx->cstorm_st_context.hq_pbl_base.hi =
1835                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1836         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1837         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1838         ictx->cstorm_st_context.task_pbl_base.lo =
1839                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1840         ictx->cstorm_st_context.task_pbl_base.hi =
1841                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1842         /* CSTORM and USTORM initialization is different, CSTORM requires
1843          * CQ DB base & not PTE addr */
1844         ictx->cstorm_st_context.cq_db_base.lo =
1845                 req1->cq_page_table_addr_lo & CNIC_PAGE_MASK;
1846         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1847         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1848         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1849         for (i = 0; i < cp->num_cqs; i++) {
1850                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1851                         ISCSI_INITIAL_SN;
1852                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1853                         ISCSI_INITIAL_SN;
1854         }
1855
1856         ictx->xstorm_ag_context.cdu_reserved =
1857                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1858                                        ISCSI_CONNECTION_TYPE);
1859         ictx->ustorm_ag_context.cdu_usage =
1860                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1861                                        ISCSI_CONNECTION_TYPE);
1862         return 0;
1863
1864 }
1865
1866 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1867                                    u32 num, int *work)
1868 {
1869         struct iscsi_kwqe_conn_offload1 *req1;
1870         struct iscsi_kwqe_conn_offload2 *req2;
1871         struct cnic_local *cp = dev->cnic_priv;
1872         struct bnx2x *bp = netdev_priv(dev->netdev);
1873         struct cnic_context *ctx;
1874         struct iscsi_kcqe kcqe;
1875         struct kcqe *cqes[1];
1876         u32 l5_cid;
1877         int ret = 0;
1878
1879         if (num < 2) {
1880                 *work = num;
1881                 return -EINVAL;
1882         }
1883
1884         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1885         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1886         if ((num - 2) < req2->num_additional_wqes) {
1887                 *work = num;
1888                 return -EINVAL;
1889         }
1890         *work = 2 + req2->num_additional_wqes;
1891
1892         l5_cid = req1->iscsi_conn_id;
1893         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1894                 return -EINVAL;
1895
1896         memset(&kcqe, 0, sizeof(kcqe));
1897         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1898         kcqe.iscsi_conn_id = l5_cid;
1899         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1900
1901         ctx = &cp->ctx_tbl[l5_cid];
1902         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1903                 kcqe.completion_status =
1904                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1905                 goto done;
1906         }
1907
1908         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1909                 atomic_dec(&cp->iscsi_conn);
1910                 goto done;
1911         }
1912         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1913         if (ret) {
1914                 atomic_dec(&cp->iscsi_conn);
1915                 ret = 0;
1916                 goto done;
1917         }
1918         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1919         if (ret < 0) {
1920                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1921                 atomic_dec(&cp->iscsi_conn);
1922                 goto done;
1923         }
1924
1925         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1926         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(bp, cp->ctx_tbl[l5_cid].cid);
1927
1928 done:
1929         cqes[0] = (struct kcqe *) &kcqe;
1930         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1931         return 0;
1932 }
1933
1934
1935 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1936 {
1937         struct cnic_local *cp = dev->cnic_priv;
1938         struct iscsi_kwqe_conn_update *req =
1939                 (struct iscsi_kwqe_conn_update *) kwqe;
1940         void *data;
1941         union l5cm_specific_data l5_data;
1942         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1943         int ret;
1944
1945         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1946                 return -EINVAL;
1947
1948         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1949         if (!data)
1950                 return -ENOMEM;
1951
1952         memcpy(data, kwqe, sizeof(struct kwqe));
1953
1954         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1955                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1956         return ret;
1957 }
1958
1959 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1960 {
1961         struct cnic_local *cp = dev->cnic_priv;
1962         struct bnx2x *bp = netdev_priv(dev->netdev);
1963         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1964         union l5cm_specific_data l5_data;
1965         int ret;
1966         u32 hw_cid;
1967
1968         init_waitqueue_head(&ctx->waitq);
1969         ctx->wait_cond = 0;
1970         memset(&l5_data, 0, sizeof(l5_data));
1971         hw_cid = BNX2X_HW_CID(bp, ctx->cid);
1972
1973         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1974                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1975
1976         if (ret == 0) {
1977                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1978                 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1979                         return -EBUSY;
1980         }
1981
1982         return 0;
1983 }
1984
1985 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1986 {
1987         struct cnic_local *cp = dev->cnic_priv;
1988         struct iscsi_kwqe_conn_destroy *req =
1989                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1990         u32 l5_cid = req->reserved0;
1991         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1992         int ret = 0;
1993         struct iscsi_kcqe kcqe;
1994         struct kcqe *cqes[1];
1995
1996         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1997                 goto skip_cfc_delete;
1998
1999         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
2000                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
2001
2002                 if (delta > (2 * HZ))
2003                         delta = 0;
2004
2005                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2006                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
2007                 goto destroy_reply;
2008         }
2009
2010         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
2011
2012 skip_cfc_delete:
2013         cnic_free_bnx2x_conn_resc(dev, l5_cid);
2014
2015         if (!ret) {
2016                 atomic_dec(&cp->iscsi_conn);
2017                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2018         }
2019
2020 destroy_reply:
2021         memset(&kcqe, 0, sizeof(kcqe));
2022         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
2023         kcqe.iscsi_conn_id = l5_cid;
2024         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
2025         kcqe.iscsi_conn_context_id = req->context_id;
2026
2027         cqes[0] = (struct kcqe *) &kcqe;
2028         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
2029
2030         return 0;
2031 }
2032
2033 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
2034                                       struct l4_kwq_connect_req1 *kwqe1,
2035                                       struct l4_kwq_connect_req3 *kwqe3,
2036                                       struct l5cm_active_conn_buffer *conn_buf)
2037 {
2038         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
2039         struct l5cm_xstorm_conn_buffer *xstorm_buf =
2040                 &conn_buf->xstorm_conn_buffer;
2041         struct l5cm_tstorm_conn_buffer *tstorm_buf =
2042                 &conn_buf->tstorm_conn_buffer;
2043         struct regpair context_addr;
2044         u32 cid = BNX2X_SW_CID(kwqe1->cid);
2045         struct in6_addr src_ip, dst_ip;
2046         int i;
2047         u32 *addrp;
2048
2049         addrp = (u32 *) &conn_addr->local_ip_addr;
2050         for (i = 0; i < 4; i++, addrp++)
2051                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2052
2053         addrp = (u32 *) &conn_addr->remote_ip_addr;
2054         for (i = 0; i < 4; i++, addrp++)
2055                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2056
2057         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
2058
2059         xstorm_buf->context_addr.hi = context_addr.hi;
2060         xstorm_buf->context_addr.lo = context_addr.lo;
2061         xstorm_buf->mss = 0xffff;
2062         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
2063         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
2064                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
2065         xstorm_buf->pseudo_header_checksum =
2066                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
2067
2068         if (kwqe3->ka_timeout) {
2069                 tstorm_buf->ka_enable = 1;
2070                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
2071                 tstorm_buf->ka_interval = kwqe3->ka_interval;
2072                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
2073         }
2074         tstorm_buf->max_rt_time = 0xffffffff;
2075 }
2076
2077 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2078 {
2079         struct bnx2x *bp = netdev_priv(dev->netdev);
2080         u32 pfid = bp->pfid;
2081         u8 *mac = dev->mac_addr;
2082
2083         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2084                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2085         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2086                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2087         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2088                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2089         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2090                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2091         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2092                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2093         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2094                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2095
2096         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2097                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2098         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2099                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2100                  mac[4]);
2101         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2102                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2103         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2104                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2105                  mac[2]);
2106         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2107                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2108         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2109                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2110                  mac[0]);
2111 }
2112
2113 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2114                               u32 num, int *work)
2115 {
2116         struct cnic_local *cp = dev->cnic_priv;
2117         struct bnx2x *bp = netdev_priv(dev->netdev);
2118         struct l4_kwq_connect_req1 *kwqe1 =
2119                 (struct l4_kwq_connect_req1 *) wqes[0];
2120         struct l4_kwq_connect_req3 *kwqe3;
2121         struct l5cm_active_conn_buffer *conn_buf;
2122         struct l5cm_conn_addr_params *conn_addr;
2123         union l5cm_specific_data l5_data;
2124         u32 l5_cid = kwqe1->pg_cid;
2125         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2126         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2127         int ret;
2128
2129         if (num < 2) {
2130                 *work = num;
2131                 return -EINVAL;
2132         }
2133
2134         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2135                 *work = 3;
2136         else
2137                 *work = 2;
2138
2139         if (num < *work) {
2140                 *work = num;
2141                 return -EINVAL;
2142         }
2143
2144         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2145                 netdev_err(dev->netdev, "conn_buf size too big\n");
2146                 return -ENOMEM;
2147         }
2148         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2149         if (!conn_buf)
2150                 return -ENOMEM;
2151
2152         memset(conn_buf, 0, sizeof(*conn_buf));
2153
2154         conn_addr = &conn_buf->conn_addr_buf;
2155         conn_addr->remote_addr_0 = csk->ha[0];
2156         conn_addr->remote_addr_1 = csk->ha[1];
2157         conn_addr->remote_addr_2 = csk->ha[2];
2158         conn_addr->remote_addr_3 = csk->ha[3];
2159         conn_addr->remote_addr_4 = csk->ha[4];
2160         conn_addr->remote_addr_5 = csk->ha[5];
2161
2162         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2163                 struct l4_kwq_connect_req2 *kwqe2 =
2164                         (struct l4_kwq_connect_req2 *) wqes[1];
2165
2166                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2167                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2168                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2169
2170                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2171                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2172                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2173                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2174         }
2175         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2176
2177         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2178         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2179         conn_addr->local_tcp_port = kwqe1->src_port;
2180         conn_addr->remote_tcp_port = kwqe1->dst_port;
2181
2182         conn_addr->pmtu = kwqe3->pmtu;
2183         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2184
2185         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2186                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(bp->pfid), csk->vlan_id);
2187
2188         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2189                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2190         if (!ret)
2191                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2192
2193         return ret;
2194 }
2195
2196 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2197 {
2198         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2199         union l5cm_specific_data l5_data;
2200         int ret;
2201
2202         memset(&l5_data, 0, sizeof(l5_data));
2203         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2204                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2205         return ret;
2206 }
2207
2208 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2209 {
2210         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2211         union l5cm_specific_data l5_data;
2212         int ret;
2213
2214         memset(&l5_data, 0, sizeof(l5_data));
2215         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2216                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2217         return ret;
2218 }
2219 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2220 {
2221         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2222         struct l4_kcq kcqe;
2223         struct kcqe *cqes[1];
2224
2225         memset(&kcqe, 0, sizeof(kcqe));
2226         kcqe.pg_host_opaque = req->host_opaque;
2227         kcqe.pg_cid = req->host_opaque;
2228         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2229         cqes[0] = (struct kcqe *) &kcqe;
2230         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2231         return 0;
2232 }
2233
2234 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2235 {
2236         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2237         struct l4_kcq kcqe;
2238         struct kcqe *cqes[1];
2239
2240         memset(&kcqe, 0, sizeof(kcqe));
2241         kcqe.pg_host_opaque = req->pg_host_opaque;
2242         kcqe.pg_cid = req->pg_cid;
2243         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2244         cqes[0] = (struct kcqe *) &kcqe;
2245         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2246         return 0;
2247 }
2248
2249 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2250 {
2251         struct fcoe_kwqe_stat *req;
2252         struct fcoe_stat_ramrod_params *fcoe_stat;
2253         union l5cm_specific_data l5_data;
2254         struct cnic_local *cp = dev->cnic_priv;
2255         struct bnx2x *bp = netdev_priv(dev->netdev);
2256         int ret;
2257         u32 cid;
2258
2259         req = (struct fcoe_kwqe_stat *) kwqe;
2260         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2261
2262         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2263         if (!fcoe_stat)
2264                 return -ENOMEM;
2265
2266         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2267         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2268
2269         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2270                                   FCOE_CONNECTION_TYPE, &l5_data);
2271         return ret;
2272 }
2273
2274 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2275                                  u32 num, int *work)
2276 {
2277         int ret;
2278         struct cnic_local *cp = dev->cnic_priv;
2279         struct bnx2x *bp = netdev_priv(dev->netdev);
2280         u32 cid;
2281         struct fcoe_init_ramrod_params *fcoe_init;
2282         struct fcoe_kwqe_init1 *req1;
2283         struct fcoe_kwqe_init2 *req2;
2284         struct fcoe_kwqe_init3 *req3;
2285         union l5cm_specific_data l5_data;
2286
2287         if (num < 3) {
2288                 *work = num;
2289                 return -EINVAL;
2290         }
2291         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2292         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2293         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2294         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2295                 *work = 1;
2296                 return -EINVAL;
2297         }
2298         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2299                 *work = 2;
2300                 return -EINVAL;
2301         }
2302
2303         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2304                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2305                 return -ENOMEM;
2306         }
2307         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2308         if (!fcoe_init)
2309                 return -ENOMEM;
2310
2311         memset(fcoe_init, 0, sizeof(*fcoe_init));
2312         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2313         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2314         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2315         fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2316         fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2317         fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2318
2319         fcoe_init->sb_num = cp->status_blk_num;
2320         fcoe_init->eq_prod = MAX_KCQ_IDX;
2321         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2322         cp->kcq2.sw_prod_idx = 0;
2323
2324         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2325         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2326                                   FCOE_CONNECTION_TYPE, &l5_data);
2327         *work = 3;
2328         return ret;
2329 }
2330
2331 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2332                                  u32 num, int *work)
2333 {
2334         int ret = 0;
2335         u32 cid = -1, l5_cid;
2336         struct cnic_local *cp = dev->cnic_priv;
2337         struct bnx2x *bp = netdev_priv(dev->netdev);
2338         struct fcoe_kwqe_conn_offload1 *req1;
2339         struct fcoe_kwqe_conn_offload2 *req2;
2340         struct fcoe_kwqe_conn_offload3 *req3;
2341         struct fcoe_kwqe_conn_offload4 *req4;
2342         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2343         struct cnic_context *ctx;
2344         struct fcoe_context *fctx;
2345         struct regpair ctx_addr;
2346         union l5cm_specific_data l5_data;
2347         struct fcoe_kcqe kcqe;
2348         struct kcqe *cqes[1];
2349
2350         if (num < 4) {
2351                 *work = num;
2352                 return -EINVAL;
2353         }
2354         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2355         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2356         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2357         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2358
2359         *work = 4;
2360
2361         l5_cid = req1->fcoe_conn_id;
2362         if (l5_cid >= dev->max_fcoe_conn)
2363                 goto err_reply;
2364
2365         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2366
2367         ctx = &cp->ctx_tbl[l5_cid];
2368         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2369                 goto err_reply;
2370
2371         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2372         if (ret) {
2373                 ret = 0;
2374                 goto err_reply;
2375         }
2376         cid = ctx->cid;
2377
2378         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2379         if (fctx) {
2380                 u32 hw_cid = BNX2X_HW_CID(bp, cid);
2381                 u32 val;
2382
2383                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2384                                              FCOE_CONNECTION_TYPE);
2385                 fctx->xstorm_ag_context.cdu_reserved = val;
2386                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2387                                              FCOE_CONNECTION_TYPE);
2388                 fctx->ustorm_ag_context.cdu_usage = val;
2389         }
2390         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2391                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2392                 goto err_reply;
2393         }
2394         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2395         if (!fcoe_offload)
2396                 goto err_reply;
2397
2398         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2399         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2400         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2401         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2402         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2403
2404         cid = BNX2X_HW_CID(bp, cid);
2405         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2406                                   FCOE_CONNECTION_TYPE, &l5_data);
2407         if (!ret)
2408                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2409
2410         return ret;
2411
2412 err_reply:
2413         if (cid != -1)
2414                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2415
2416         memset(&kcqe, 0, sizeof(kcqe));
2417         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2418         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2419         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2420
2421         cqes[0] = (struct kcqe *) &kcqe;
2422         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2423         return ret;
2424 }
2425
2426 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2427 {
2428         struct fcoe_kwqe_conn_enable_disable *req;
2429         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2430         union l5cm_specific_data l5_data;
2431         int ret;
2432         u32 cid, l5_cid;
2433         struct cnic_local *cp = dev->cnic_priv;
2434
2435         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2436         cid = req->context_id;
2437         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2438
2439         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2440                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2441                 return -ENOMEM;
2442         }
2443         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2444         if (!fcoe_enable)
2445                 return -ENOMEM;
2446
2447         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2448         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2449         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2450                                   FCOE_CONNECTION_TYPE, &l5_data);
2451         return ret;
2452 }
2453
2454 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2455 {
2456         struct fcoe_kwqe_conn_enable_disable *req;
2457         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2458         union l5cm_specific_data l5_data;
2459         int ret;
2460         u32 cid, l5_cid;
2461         struct cnic_local *cp = dev->cnic_priv;
2462
2463         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2464         cid = req->context_id;
2465         l5_cid = req->conn_id;
2466         if (l5_cid >= dev->max_fcoe_conn)
2467                 return -EINVAL;
2468
2469         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2470
2471         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2472                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2473                 return -ENOMEM;
2474         }
2475         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2476         if (!fcoe_disable)
2477                 return -ENOMEM;
2478
2479         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2480         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2481         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2482                                   FCOE_CONNECTION_TYPE, &l5_data);
2483         return ret;
2484 }
2485
2486 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2487 {
2488         struct fcoe_kwqe_conn_destroy *req;
2489         union l5cm_specific_data l5_data;
2490         int ret;
2491         u32 cid, l5_cid;
2492         struct cnic_local *cp = dev->cnic_priv;
2493         struct cnic_context *ctx;
2494         struct fcoe_kcqe kcqe;
2495         struct kcqe *cqes[1];
2496
2497         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2498         cid = req->context_id;
2499         l5_cid = req->conn_id;
2500         if (l5_cid >= dev->max_fcoe_conn)
2501                 return -EINVAL;
2502
2503         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2504
2505         ctx = &cp->ctx_tbl[l5_cid];
2506
2507         init_waitqueue_head(&ctx->waitq);
2508         ctx->wait_cond = 0;
2509
2510         memset(&kcqe, 0, sizeof(kcqe));
2511         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2512         memset(&l5_data, 0, sizeof(l5_data));
2513         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2514                                   FCOE_CONNECTION_TYPE, &l5_data);
2515         if (ret == 0) {
2516                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2517                 if (ctx->wait_cond)
2518                         kcqe.completion_status = 0;
2519         }
2520
2521         set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2522         queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2523
2524         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2525         kcqe.fcoe_conn_id = req->conn_id;
2526         kcqe.fcoe_conn_context_id = cid;
2527
2528         cqes[0] = (struct kcqe *) &kcqe;
2529         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2530         return ret;
2531 }
2532
2533 static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2534 {
2535         struct cnic_local *cp = dev->cnic_priv;
2536         u32 i;
2537
2538         for (i = start_cid; i < cp->max_cid_space; i++) {
2539                 struct cnic_context *ctx = &cp->ctx_tbl[i];
2540                 int j;
2541
2542                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2543                         msleep(10);
2544
2545                 for (j = 0; j < 5; j++) {
2546                         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2547                                 break;
2548                         msleep(20);
2549                 }
2550
2551                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2552                         netdev_warn(dev->netdev, "CID %x not deleted\n",
2553                                    ctx->cid);
2554         }
2555 }
2556
2557 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2558 {
2559         struct fcoe_kwqe_destroy *req;
2560         union l5cm_specific_data l5_data;
2561         struct cnic_local *cp = dev->cnic_priv;
2562         struct bnx2x *bp = netdev_priv(dev->netdev);
2563         int ret;
2564         u32 cid;
2565
2566         cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2567
2568         req = (struct fcoe_kwqe_destroy *) kwqe;
2569         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2570
2571         memset(&l5_data, 0, sizeof(l5_data));
2572         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2573                                   FCOE_CONNECTION_TYPE, &l5_data);
2574         return ret;
2575 }
2576
2577 static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2578 {
2579         struct cnic_local *cp = dev->cnic_priv;
2580         struct kcqe kcqe;
2581         struct kcqe *cqes[1];
2582         u32 cid;
2583         u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2584         u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2585         u32 kcqe_op;
2586         int ulp_type;
2587
2588         cid = kwqe->kwqe_info0;
2589         memset(&kcqe, 0, sizeof(kcqe));
2590
2591         if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2592                 u32 l5_cid = 0;
2593
2594                 ulp_type = CNIC_ULP_FCOE;
2595                 if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2596                         struct fcoe_kwqe_conn_enable_disable *req;
2597
2598                         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2599                         kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2600                         cid = req->context_id;
2601                         l5_cid = req->conn_id;
2602                 } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2603                         kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2604                 } else {
2605                         return;
2606                 }
2607                 kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2608                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2609                 kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2610                 kcqe.kcqe_info2 = cid;
2611                 kcqe.kcqe_info0 = l5_cid;
2612
2613         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2614                 ulp_type = CNIC_ULP_ISCSI;
2615                 if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2616                         cid = kwqe->kwqe_info1;
2617
2618                 kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2619                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2620                 kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2621                 kcqe.kcqe_info2 = cid;
2622                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2623
2624         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2625                 struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2626
2627                 ulp_type = CNIC_ULP_L4;
2628                 if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2629                         kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2630                 else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2631                         kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2632                 else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2633                         kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2634                 else
2635                         return;
2636
2637                 kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2638                                     KCQE_FLAGS_LAYER_MASK_L4;
2639                 l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2640                 l4kcqe->cid = cid;
2641                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2642         } else {
2643                 return;
2644         }
2645
2646         cqes[0] = &kcqe;
2647         cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2648 }
2649
2650 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2651                                          struct kwqe *wqes[], u32 num_wqes)
2652 {
2653         int i, work, ret;
2654         u32 opcode;
2655         struct kwqe *kwqe;
2656
2657         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2658                 return -EAGAIN;         /* bnx2 is down */
2659
2660         for (i = 0; i < num_wqes; ) {
2661                 kwqe = wqes[i];
2662                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2663                 work = 1;
2664
2665                 switch (opcode) {
2666                 case ISCSI_KWQE_OPCODE_INIT1:
2667                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2668                         break;
2669                 case ISCSI_KWQE_OPCODE_INIT2:
2670                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2671                         break;
2672                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2673                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2674                                                      num_wqes - i, &work);
2675                         break;
2676                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2677                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2678                         break;
2679                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2680                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2681                         break;
2682                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2683                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2684                                                  &work);
2685                         break;
2686                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2687                         ret = cnic_bnx2x_close(dev, kwqe);
2688                         break;
2689                 case L4_KWQE_OPCODE_VALUE_RESET:
2690                         ret = cnic_bnx2x_reset(dev, kwqe);
2691                         break;
2692                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2693                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2694                         break;
2695                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2696                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2697                         break;
2698                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2699                         ret = 0;
2700                         break;
2701                 default:
2702                         ret = 0;
2703                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2704                                    opcode);
2705                         break;
2706                 }
2707                 if (ret < 0) {
2708                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2709                                    opcode);
2710
2711                         /* Possibly bnx2x parity error, send completion
2712                          * to ulp drivers with error code to speed up
2713                          * cleanup and reset recovery.
2714                          */
2715                         if (ret == -EIO || ret == -EAGAIN)
2716                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2717                 }
2718                 i += work;
2719         }
2720         return 0;
2721 }
2722
2723 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2724                                         struct kwqe *wqes[], u32 num_wqes)
2725 {
2726         struct bnx2x *bp = netdev_priv(dev->netdev);
2727         int i, work, ret;
2728         u32 opcode;
2729         struct kwqe *kwqe;
2730
2731         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2732                 return -EAGAIN;         /* bnx2 is down */
2733
2734         if (!BNX2X_CHIP_IS_E2_PLUS(bp))
2735                 return -EINVAL;
2736
2737         for (i = 0; i < num_wqes; ) {
2738                 kwqe = wqes[i];
2739                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2740                 work = 1;
2741
2742                 switch (opcode) {
2743                 case FCOE_KWQE_OPCODE_INIT1:
2744                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2745                                                     num_wqes - i, &work);
2746                         break;
2747                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2748                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2749                                                     num_wqes - i, &work);
2750                         break;
2751                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2752                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2753                         break;
2754                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2755                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2756                         break;
2757                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2758                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2759                         break;
2760                 case FCOE_KWQE_OPCODE_DESTROY:
2761                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2762                         break;
2763                 case FCOE_KWQE_OPCODE_STAT:
2764                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2765                         break;
2766                 default:
2767                         ret = 0;
2768                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2769                                    opcode);
2770                         break;
2771                 }
2772                 if (ret < 0) {
2773                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2774                                    opcode);
2775
2776                         /* Possibly bnx2x parity error, send completion
2777                          * to ulp drivers with error code to speed up
2778                          * cleanup and reset recovery.
2779                          */
2780                         if (ret == -EIO || ret == -EAGAIN)
2781                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2782                 }
2783                 i += work;
2784         }
2785         return 0;
2786 }
2787
2788 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2789                                    u32 num_wqes)
2790 {
2791         int ret = -EINVAL;
2792         u32 layer_code;
2793
2794         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2795                 return -EAGAIN;         /* bnx2x is down */
2796
2797         if (!num_wqes)
2798                 return 0;
2799
2800         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2801         switch (layer_code) {
2802         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2803         case KWQE_FLAGS_LAYER_MASK_L4:
2804         case KWQE_FLAGS_LAYER_MASK_L2:
2805                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2806                 break;
2807
2808         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2809                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2810                 break;
2811         }
2812         return ret;
2813 }
2814
2815 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2816 {
2817         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2818                 return KCQE_FLAGS_LAYER_MASK_L4;
2819
2820         return opflag & KCQE_FLAGS_LAYER_MASK;
2821 }
2822
2823 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2824 {
2825         struct cnic_local *cp = dev->cnic_priv;
2826         int i, j, comp = 0;
2827
2828         i = 0;
2829         j = 1;
2830         while (num_cqes) {
2831                 struct cnic_ulp_ops *ulp_ops;
2832                 int ulp_type;
2833                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2834                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2835
2836                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2837                         comp++;
2838
2839                 while (j < num_cqes) {
2840                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2841
2842                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2843                                 break;
2844
2845                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2846                                 comp++;
2847                         j++;
2848                 }
2849
2850                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2851                         ulp_type = CNIC_ULP_RDMA;
2852                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2853                         ulp_type = CNIC_ULP_ISCSI;
2854                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2855                         ulp_type = CNIC_ULP_FCOE;
2856                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2857                         ulp_type = CNIC_ULP_L4;
2858                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2859                         goto end;
2860                 else {
2861                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2862                                    kcqe_op_flag);
2863                         goto end;
2864                 }
2865
2866                 rcu_read_lock();
2867                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2868                 if (likely(ulp_ops)) {
2869                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2870                                                   cp->completed_kcq + i, j);
2871                 }
2872                 rcu_read_unlock();
2873 end:
2874                 num_cqes -= j;
2875                 i += j;
2876                 j = 1;
2877         }
2878         if (unlikely(comp))
2879                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2880 }
2881
2882 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2883 {
2884         struct cnic_local *cp = dev->cnic_priv;
2885         u16 i, ri, hw_prod, last;
2886         struct kcqe *kcqe;
2887         int kcqe_cnt = 0, last_cnt = 0;
2888
2889         i = ri = last = info->sw_prod_idx;
2890         ri &= MAX_KCQ_IDX;
2891         hw_prod = *info->hw_prod_idx_ptr;
2892         hw_prod = info->hw_idx(hw_prod);
2893
2894         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2895                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2896                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2897                 i = info->next_idx(i);
2898                 ri = i & MAX_KCQ_IDX;
2899                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2900                         last_cnt = kcqe_cnt;
2901                         last = i;
2902                 }
2903         }
2904
2905         info->sw_prod_idx = last;
2906         return last_cnt;
2907 }
2908
2909 static int cnic_l2_completion(struct cnic_local *cp)
2910 {
2911         u16 hw_cons, sw_cons;
2912         struct cnic_uio_dev *udev = cp->udev;
2913         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2914                                         (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
2915         u32 cmd;
2916         int comp = 0;
2917
2918         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2919                 return 0;
2920
2921         hw_cons = *cp->rx_cons_ptr;
2922         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2923                 hw_cons++;
2924
2925         sw_cons = cp->rx_cons;
2926         while (sw_cons != hw_cons) {
2927                 u8 cqe_fp_flags;
2928
2929                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2930                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2931                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2932                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2933                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2934                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2935                             cmd == RAMROD_CMD_ID_ETH_HALT)
2936                                 comp++;
2937                 }
2938                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2939         }
2940         return comp;
2941 }
2942
2943 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2944 {
2945         u16 rx_cons, tx_cons;
2946         int comp = 0;
2947
2948         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2949                 return;
2950
2951         rx_cons = *cp->rx_cons_ptr;
2952         tx_cons = *cp->tx_cons_ptr;
2953         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2954                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2955                         comp = cnic_l2_completion(cp);
2956
2957                 cp->tx_cons = tx_cons;
2958                 cp->rx_cons = rx_cons;
2959
2960                 if (cp->udev)
2961                         uio_event_notify(&cp->udev->cnic_uinfo);
2962         }
2963         if (comp)
2964                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2965 }
2966
2967 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2968 {
2969         struct cnic_local *cp = dev->cnic_priv;
2970         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2971         int kcqe_cnt;
2972
2973         /* status block index must be read before reading other fields */
2974         rmb();
2975         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2976
2977         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2978
2979                 service_kcqes(dev, kcqe_cnt);
2980
2981                 /* Tell compiler that status_blk fields can change. */
2982                 barrier();
2983                 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2984                 /* status block index must be read first */
2985                 rmb();
2986                 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2987         }
2988
2989         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2990
2991         cnic_chk_pkt_rings(cp);
2992
2993         return status_idx;
2994 }
2995
2996 static int cnic_service_bnx2(void *data, void *status_blk)
2997 {
2998         struct cnic_dev *dev = data;
2999
3000         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3001                 struct status_block *sblk = status_blk;
3002
3003                 return sblk->status_idx;
3004         }
3005
3006         return cnic_service_bnx2_queues(dev);
3007 }
3008
3009 static void cnic_service_bnx2_msix(unsigned long data)
3010 {
3011         struct cnic_dev *dev = (struct cnic_dev *) data;
3012         struct cnic_local *cp = dev->cnic_priv;
3013
3014         cp->last_status_idx = cnic_service_bnx2_queues(dev);
3015
3016         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3017                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3018 }
3019
3020 static void cnic_doirq(struct cnic_dev *dev)
3021 {
3022         struct cnic_local *cp = dev->cnic_priv;
3023
3024         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3025                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
3026
3027                 prefetch(cp->status_blk.gen);
3028                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
3029
3030                 tasklet_schedule(&cp->cnic_irq_task);
3031         }
3032 }
3033
3034 static irqreturn_t cnic_irq(int irq, void *dev_instance)
3035 {
3036         struct cnic_dev *dev = dev_instance;
3037         struct cnic_local *cp = dev->cnic_priv;
3038
3039         if (cp->ack_int)
3040                 cp->ack_int(dev);
3041
3042         cnic_doirq(dev);
3043
3044         return IRQ_HANDLED;
3045 }
3046
3047 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
3048                                       u16 index, u8 op, u8 update)
3049 {
3050         struct bnx2x *bp = netdev_priv(dev->netdev);
3051         u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp) * 32 +
3052                        COMMAND_REG_INT_ACK);
3053         struct igu_ack_register igu_ack;
3054
3055         igu_ack.status_block_index = index;
3056         igu_ack.sb_id_and_flags =
3057                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
3058                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3059                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3060                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3061
3062         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3063 }
3064
3065 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3066                             u16 index, u8 op, u8 update)
3067 {
3068         struct igu_regular cmd_data;
3069         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3070
3071         cmd_data.sb_id_and_flags =
3072                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3073                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3074                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
3075                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3076
3077
3078         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3079 }
3080
3081 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3082 {
3083         struct cnic_local *cp = dev->cnic_priv;
3084
3085         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3086                            IGU_INT_DISABLE, 0);
3087 }
3088
3089 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3090 {
3091         struct cnic_local *cp = dev->cnic_priv;
3092
3093         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3094                         IGU_INT_DISABLE, 0);
3095 }
3096
3097 static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
3098 {
3099         struct cnic_local *cp = dev->cnic_priv;
3100
3101         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
3102                            IGU_INT_ENABLE, 1);
3103 }
3104
3105 static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
3106 {
3107         struct cnic_local *cp = dev->cnic_priv;
3108
3109         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
3110                         IGU_INT_ENABLE, 1);
3111 }
3112
3113 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3114 {
3115         u32 last_status = *info->status_idx_ptr;
3116         int kcqe_cnt;
3117
3118         /* status block index must be read before reading the KCQ */
3119         rmb();
3120         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3121
3122                 service_kcqes(dev, kcqe_cnt);
3123
3124                 /* Tell compiler that sblk fields can change. */
3125                 barrier();
3126
3127                 last_status = *info->status_idx_ptr;
3128                 /* status block index must be read before reading the KCQ */
3129                 rmb();
3130         }
3131         return last_status;
3132 }
3133
3134 static void cnic_service_bnx2x_bh(unsigned long data)
3135 {
3136         struct cnic_dev *dev = (struct cnic_dev *) data;
3137         struct cnic_local *cp = dev->cnic_priv;
3138         struct bnx2x *bp = netdev_priv(dev->netdev);
3139         u32 status_idx, new_status_idx;
3140
3141         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3142                 return;
3143
3144         while (1) {
3145                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3146
3147                 CNIC_WR16(dev, cp->kcq1.io_addr,
3148                           cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3149
3150                 if (!CNIC_SUPPORTS_FCOE(bp)) {
3151                         cp->arm_int(dev, status_idx);
3152                         break;
3153                 }
3154
3155                 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3156
3157                 if (new_status_idx != status_idx)
3158                         continue;
3159
3160                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3161                           MAX_KCQ_IDX);
3162
3163                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3164                                 status_idx, IGU_INT_ENABLE, 1);
3165
3166                 break;
3167         }
3168 }
3169
3170 static int cnic_service_bnx2x(void *data, void *status_blk)
3171 {
3172         struct cnic_dev *dev = data;
3173         struct cnic_local *cp = dev->cnic_priv;
3174
3175         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3176                 cnic_doirq(dev);
3177
3178         cnic_chk_pkt_rings(cp);
3179
3180         return 0;
3181 }
3182
3183 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3184 {
3185         struct cnic_ulp_ops *ulp_ops;
3186
3187         if (if_type == CNIC_ULP_ISCSI)
3188                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3189
3190         mutex_lock(&cnic_lock);
3191         ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3192                                             lockdep_is_held(&cnic_lock));
3193         if (!ulp_ops) {
3194                 mutex_unlock(&cnic_lock);
3195                 return;
3196         }
3197         set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3198         mutex_unlock(&cnic_lock);
3199
3200         if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3201                 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3202
3203         clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3204 }
3205
3206 static void cnic_ulp_stop(struct cnic_dev *dev)
3207 {
3208         struct cnic_local *cp = dev->cnic_priv;
3209         int if_type;
3210
3211         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3212                 cnic_ulp_stop_one(cp, if_type);
3213 }
3214
3215 static void cnic_ulp_start(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                 struct cnic_ulp_ops *ulp_ops;
3222
3223                 mutex_lock(&cnic_lock);
3224                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3225                                                     lockdep_is_held(&cnic_lock));
3226                 if (!ulp_ops || !ulp_ops->cnic_start) {
3227                         mutex_unlock(&cnic_lock);
3228                         continue;
3229                 }
3230                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3231                 mutex_unlock(&cnic_lock);
3232
3233                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3234                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3235
3236                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3237         }
3238 }
3239
3240 static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3241 {
3242         struct cnic_local *cp = dev->cnic_priv;
3243         struct cnic_ulp_ops *ulp_ops;
3244         int rc;
3245
3246         mutex_lock(&cnic_lock);
3247         ulp_ops = rcu_dereference_protected(cp->ulp_ops[ulp_type],
3248                                             lockdep_is_held(&cnic_lock));
3249         if (ulp_ops && ulp_ops->cnic_get_stats)
3250                 rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3251         else
3252                 rc = -ENODEV;
3253         mutex_unlock(&cnic_lock);
3254         return rc;
3255 }
3256
3257 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3258 {
3259         struct cnic_dev *dev = data;
3260         int ulp_type = CNIC_ULP_ISCSI;
3261
3262         switch (info->cmd) {
3263         case CNIC_CTL_STOP_CMD:
3264                 cnic_hold(dev);
3265
3266                 cnic_ulp_stop(dev);
3267                 cnic_stop_hw(dev);
3268
3269                 cnic_put(dev);
3270                 break;
3271         case CNIC_CTL_START_CMD:
3272                 cnic_hold(dev);
3273
3274                 if (!cnic_start_hw(dev))
3275                         cnic_ulp_start(dev);
3276
3277                 cnic_put(dev);
3278                 break;
3279         case CNIC_CTL_STOP_ISCSI_CMD: {
3280                 struct cnic_local *cp = dev->cnic_priv;
3281                 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3282                 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3283                 break;
3284         }
3285         case CNIC_CTL_COMPLETION_CMD: {
3286                 struct cnic_ctl_completion *comp = &info->data.comp;
3287                 u32 cid = BNX2X_SW_CID(comp->cid);
3288                 u32 l5_cid;
3289                 struct cnic_local *cp = dev->cnic_priv;
3290
3291                 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
3292                         break;
3293
3294                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3295                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3296
3297                         if (unlikely(comp->error)) {
3298                                 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3299                                 netdev_err(dev->netdev,
3300                                            "CID %x CFC delete comp error %x\n",
3301                                            cid, comp->error);
3302                         }
3303
3304                         ctx->wait_cond = 1;
3305                         wake_up(&ctx->waitq);
3306                 }
3307                 break;
3308         }
3309         case CNIC_CTL_FCOE_STATS_GET_CMD:
3310                 ulp_type = CNIC_ULP_FCOE;
3311                 /* fall through */
3312         case CNIC_CTL_ISCSI_STATS_GET_CMD:
3313                 cnic_hold(dev);
3314                 cnic_copy_ulp_stats(dev, ulp_type);
3315                 cnic_put(dev);
3316                 break;
3317
3318         default:
3319                 return -EINVAL;
3320         }
3321         return 0;
3322 }
3323
3324 static void cnic_ulp_init(struct cnic_dev *dev)
3325 {
3326         int i;
3327         struct cnic_local *cp = dev->cnic_priv;
3328
3329         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3330                 struct cnic_ulp_ops *ulp_ops;
3331
3332                 mutex_lock(&cnic_lock);
3333                 ulp_ops = cnic_ulp_tbl_prot(i);
3334                 if (!ulp_ops || !ulp_ops->cnic_init) {
3335                         mutex_unlock(&cnic_lock);
3336                         continue;
3337                 }
3338                 ulp_get(ulp_ops);
3339                 mutex_unlock(&cnic_lock);
3340
3341                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3342                         ulp_ops->cnic_init(dev);
3343
3344                 ulp_put(ulp_ops);
3345         }
3346 }
3347
3348 static void cnic_ulp_exit(struct cnic_dev *dev)
3349 {
3350         int i;
3351         struct cnic_local *cp = dev->cnic_priv;
3352
3353         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3354                 struct cnic_ulp_ops *ulp_ops;
3355
3356                 mutex_lock(&cnic_lock);
3357                 ulp_ops = cnic_ulp_tbl_prot(i);
3358                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3359                         mutex_unlock(&cnic_lock);
3360                         continue;
3361                 }
3362                 ulp_get(ulp_ops);
3363                 mutex_unlock(&cnic_lock);
3364
3365                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3366                         ulp_ops->cnic_exit(dev);
3367
3368                 ulp_put(ulp_ops);
3369         }
3370 }
3371
3372 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3373 {
3374         struct cnic_dev *dev = csk->dev;
3375         struct l4_kwq_offload_pg *l4kwqe;
3376         struct kwqe *wqes[1];
3377
3378         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3379         memset(l4kwqe, 0, sizeof(*l4kwqe));
3380         wqes[0] = (struct kwqe *) l4kwqe;
3381
3382         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3383         l4kwqe->flags =
3384                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3385         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3386
3387         l4kwqe->da0 = csk->ha[0];
3388         l4kwqe->da1 = csk->ha[1];
3389         l4kwqe->da2 = csk->ha[2];
3390         l4kwqe->da3 = csk->ha[3];
3391         l4kwqe->da4 = csk->ha[4];
3392         l4kwqe->da5 = csk->ha[5];
3393
3394         l4kwqe->sa0 = dev->mac_addr[0];
3395         l4kwqe->sa1 = dev->mac_addr[1];
3396         l4kwqe->sa2 = dev->mac_addr[2];
3397         l4kwqe->sa3 = dev->mac_addr[3];
3398         l4kwqe->sa4 = dev->mac_addr[4];
3399         l4kwqe->sa5 = dev->mac_addr[5];
3400
3401         l4kwqe->etype = ETH_P_IP;
3402         l4kwqe->ipid_start = DEF_IPID_START;
3403         l4kwqe->host_opaque = csk->l5_cid;
3404
3405         if (csk->vlan_id) {
3406                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3407                 l4kwqe->vlan_tag = csk->vlan_id;
3408                 l4kwqe->l2hdr_nbytes += 4;
3409         }
3410
3411         return dev->submit_kwqes(dev, wqes, 1);
3412 }
3413
3414 static int cnic_cm_update_pg(struct cnic_sock *csk)
3415 {
3416         struct cnic_dev *dev = csk->dev;
3417         struct l4_kwq_update_pg *l4kwqe;
3418         struct kwqe *wqes[1];
3419
3420         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3421         memset(l4kwqe, 0, sizeof(*l4kwqe));
3422         wqes[0] = (struct kwqe *) l4kwqe;
3423
3424         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3425         l4kwqe->flags =
3426                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3427         l4kwqe->pg_cid = csk->pg_cid;
3428
3429         l4kwqe->da0 = csk->ha[0];
3430         l4kwqe->da1 = csk->ha[1];
3431         l4kwqe->da2 = csk->ha[2];
3432         l4kwqe->da3 = csk->ha[3];
3433         l4kwqe->da4 = csk->ha[4];
3434         l4kwqe->da5 = csk->ha[5];
3435
3436         l4kwqe->pg_host_opaque = csk->l5_cid;
3437         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3438
3439         return dev->submit_kwqes(dev, wqes, 1);
3440 }
3441
3442 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3443 {
3444         struct cnic_dev *dev = csk->dev;
3445         struct l4_kwq_upload *l4kwqe;
3446         struct kwqe *wqes[1];
3447
3448         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3449         memset(l4kwqe, 0, sizeof(*l4kwqe));
3450         wqes[0] = (struct kwqe *) l4kwqe;
3451
3452         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3453         l4kwqe->flags =
3454                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3455         l4kwqe->cid = csk->pg_cid;
3456
3457         return dev->submit_kwqes(dev, wqes, 1);
3458 }
3459
3460 static int cnic_cm_conn_req(struct cnic_sock *csk)
3461 {
3462         struct cnic_dev *dev = csk->dev;
3463         struct l4_kwq_connect_req1 *l4kwqe1;
3464         struct l4_kwq_connect_req2 *l4kwqe2;
3465         struct l4_kwq_connect_req3 *l4kwqe3;
3466         struct kwqe *wqes[3];
3467         u8 tcp_flags = 0;
3468         int num_wqes = 2;
3469
3470         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3471         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3472         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3473         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3474         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3475         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3476
3477         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3478         l4kwqe3->flags =
3479                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3480         l4kwqe3->ka_timeout = csk->ka_timeout;
3481         l4kwqe3->ka_interval = csk->ka_interval;
3482         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3483         l4kwqe3->tos = csk->tos;
3484         l4kwqe3->ttl = csk->ttl;
3485         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3486         l4kwqe3->pmtu = csk->mtu;
3487         l4kwqe3->rcv_buf = csk->rcv_buf;
3488         l4kwqe3->snd_buf = csk->snd_buf;
3489         l4kwqe3->seed = csk->seed;
3490
3491         wqes[0] = (struct kwqe *) l4kwqe1;
3492         if (test_bit(SK_F_IPV6, &csk->flags)) {
3493                 wqes[1] = (struct kwqe *) l4kwqe2;
3494                 wqes[2] = (struct kwqe *) l4kwqe3;
3495                 num_wqes = 3;
3496
3497                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3498                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3499                 l4kwqe2->flags =
3500                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3501                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3502                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3503                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3504                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3505                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3506                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3507                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3508                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3509                                sizeof(struct tcphdr);
3510         } else {
3511                 wqes[1] = (struct kwqe *) l4kwqe3;
3512                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3513                                sizeof(struct tcphdr);
3514         }
3515
3516         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3517         l4kwqe1->flags =
3518                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3519                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3520         l4kwqe1->cid = csk->cid;
3521         l4kwqe1->pg_cid = csk->pg_cid;
3522         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3523         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3524         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3525         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3526         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3527                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3528         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3529                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3530         if (csk->tcp_flags & SK_TCP_NAGLE)
3531                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3532         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3533                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3534         if (csk->tcp_flags & SK_TCP_SACK)
3535                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3536         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3537                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3538
3539         l4kwqe1->tcp_flags = tcp_flags;
3540
3541         return dev->submit_kwqes(dev, wqes, num_wqes);
3542 }
3543
3544 static int cnic_cm_close_req(struct cnic_sock *csk)
3545 {
3546         struct cnic_dev *dev = csk->dev;
3547         struct l4_kwq_close_req *l4kwqe;
3548         struct kwqe *wqes[1];
3549
3550         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3551         memset(l4kwqe, 0, sizeof(*l4kwqe));
3552         wqes[0] = (struct kwqe *) l4kwqe;
3553
3554         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3555         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3556         l4kwqe->cid = csk->cid;
3557
3558         return dev->submit_kwqes(dev, wqes, 1);
3559 }
3560
3561 static int cnic_cm_abort_req(struct cnic_sock *csk)
3562 {
3563         struct cnic_dev *dev = csk->dev;
3564         struct l4_kwq_reset_req *l4kwqe;
3565         struct kwqe *wqes[1];
3566
3567         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3568         memset(l4kwqe, 0, sizeof(*l4kwqe));
3569         wqes[0] = (struct kwqe *) l4kwqe;
3570
3571         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3572         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3573         l4kwqe->cid = csk->cid;
3574
3575         return dev->submit_kwqes(dev, wqes, 1);
3576 }
3577
3578 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3579                           u32 l5_cid, struct cnic_sock **csk, void *context)
3580 {
3581         struct cnic_local *cp = dev->cnic_priv;
3582         struct cnic_sock *csk1;
3583
3584         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3585                 return -EINVAL;
3586
3587         if (cp->ctx_tbl) {
3588                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3589
3590                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3591                         return -EAGAIN;
3592         }
3593
3594         csk1 = &cp->csk_tbl[l5_cid];
3595         if (atomic_read(&csk1->ref_count))
3596                 return -EAGAIN;
3597
3598         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3599                 return -EBUSY;
3600
3601         csk1->dev = dev;
3602         csk1->cid = cid;
3603         csk1->l5_cid = l5_cid;
3604         csk1->ulp_type = ulp_type;
3605         csk1->context = context;
3606
3607         csk1->ka_timeout = DEF_KA_TIMEOUT;
3608         csk1->ka_interval = DEF_KA_INTERVAL;
3609         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3610         csk1->tos = DEF_TOS;
3611         csk1->ttl = DEF_TTL;
3612         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3613         csk1->rcv_buf = DEF_RCV_BUF;
3614         csk1->snd_buf = DEF_SND_BUF;
3615         csk1->seed = DEF_SEED;
3616         csk1->tcp_flags = 0;
3617
3618         *csk = csk1;
3619         return 0;
3620 }
3621
3622 static void cnic_cm_cleanup(struct cnic_sock *csk)
3623 {
3624         if (csk->src_port) {
3625                 struct cnic_dev *dev = csk->dev;
3626                 struct cnic_local *cp = dev->cnic_priv;
3627
3628                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3629                 csk->src_port = 0;
3630         }
3631 }
3632
3633 static void cnic_close_conn(struct cnic_sock *csk)
3634 {
3635         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3636                 cnic_cm_upload_pg(csk);
3637                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3638         }
3639         cnic_cm_cleanup(csk);
3640 }
3641
3642 static int cnic_cm_destroy(struct cnic_sock *csk)
3643 {
3644         if (!cnic_in_use(csk))
3645                 return -EINVAL;
3646
3647         csk_hold(csk);
3648         clear_bit(SK_F_INUSE, &csk->flags);
3649         smp_mb__after_clear_bit();
3650         while (atomic_read(&csk->ref_count) != 1)
3651                 msleep(1);
3652         cnic_cm_cleanup(csk);
3653
3654         csk->flags = 0;
3655         csk_put(csk);
3656         return 0;
3657 }
3658
3659 static inline u16 cnic_get_vlan(struct net_device *dev,
3660                                 struct net_device **vlan_dev)
3661 {
3662         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3663                 *vlan_dev = vlan_dev_real_dev(dev);
3664                 return vlan_dev_vlan_id(dev);
3665         }
3666         *vlan_dev = dev;
3667         return 0;
3668 }
3669
3670 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3671                              struct dst_entry **dst)
3672 {
3673 #if defined(CONFIG_INET)
3674         struct rtable *rt;
3675
3676         rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3677         if (!IS_ERR(rt)) {
3678                 *dst = &rt->dst;
3679                 return 0;
3680         }
3681         return PTR_ERR(rt);
3682 #else
3683         return -ENETUNREACH;
3684 #endif
3685 }
3686
3687 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3688                              struct dst_entry **dst)
3689 {
3690 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3691         struct flowi6 fl6;
3692
3693         memset(&fl6, 0, sizeof(fl6));
3694         fl6.daddr = dst_addr->sin6_addr;
3695         if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3696                 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3697
3698         *dst = ip6_route_output(&init_net, NULL, &fl6);
3699         if ((*dst)->error) {
3700                 dst_release(*dst);
3701                 *dst = NULL;
3702                 return -ENETUNREACH;
3703         } else
3704                 return 0;
3705 #endif
3706
3707         return -ENETUNREACH;
3708 }
3709
3710 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3711                                            int ulp_type)
3712 {
3713         struct cnic_dev *dev = NULL;
3714         struct dst_entry *dst;
3715         struct net_device *netdev = NULL;
3716         int err = -ENETUNREACH;
3717
3718         if (dst_addr->sin_family == AF_INET)
3719                 err = cnic_get_v4_route(dst_addr, &dst);
3720         else if (dst_addr->sin_family == AF_INET6) {
3721                 struct sockaddr_in6 *dst_addr6 =
3722                         (struct sockaddr_in6 *) dst_addr;
3723
3724                 err = cnic_get_v6_route(dst_addr6, &dst);
3725         } else
3726                 return NULL;
3727
3728         if (err)
3729                 return NULL;
3730
3731         if (!dst->dev)
3732                 goto done;
3733
3734         cnic_get_vlan(dst->dev, &netdev);
3735
3736         dev = cnic_from_netdev(netdev);
3737
3738 done:
3739         dst_release(dst);
3740         if (dev)
3741                 cnic_put(dev);
3742         return dev;
3743 }
3744
3745 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3746 {
3747         struct cnic_dev *dev = csk->dev;
3748         struct cnic_local *cp = dev->cnic_priv;
3749
3750         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3751 }
3752
3753 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3754 {
3755         struct cnic_dev *dev = csk->dev;
3756         struct cnic_local *cp = dev->cnic_priv;
3757         int is_v6, rc = 0;
3758         struct dst_entry *dst = NULL;
3759         struct net_device *realdev;
3760         __be16 local_port;
3761         u32 port_id;
3762
3763         if (saddr->local.v6.sin6_family == AF_INET6 &&
3764             saddr->remote.v6.sin6_family == AF_INET6)
3765                 is_v6 = 1;
3766         else if (saddr->local.v4.sin_family == AF_INET &&
3767                  saddr->remote.v4.sin_family == AF_INET)
3768                 is_v6 = 0;
3769         else
3770                 return -EINVAL;
3771
3772         clear_bit(SK_F_IPV6, &csk->flags);
3773
3774         if (is_v6) {
3775                 set_bit(SK_F_IPV6, &csk->flags);
3776                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3777
3778                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3779                        sizeof(struct in6_addr));
3780                 csk->dst_port = saddr->remote.v6.sin6_port;
3781                 local_port = saddr->local.v6.sin6_port;
3782
3783         } else {
3784                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3785
3786                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3787                 csk->dst_port = saddr->remote.v4.sin_port;
3788                 local_port = saddr->local.v4.sin_port;
3789         }
3790
3791         csk->vlan_id = 0;
3792         csk->mtu = dev->netdev->mtu;
3793         if (dst && dst->dev) {
3794                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3795                 if (realdev == dev->netdev) {
3796                         csk->vlan_id = vlan;
3797                         csk->mtu = dst_mtu(dst);
3798                 }
3799         }
3800
3801         port_id = be16_to_cpu(local_port);
3802         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3803             port_id < CNIC_LOCAL_PORT_MAX) {
3804                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3805                         port_id = 0;
3806         } else
3807                 port_id = 0;
3808
3809         if (!port_id) {
3810                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3811                 if (port_id == -1) {
3812                         rc = -ENOMEM;
3813                         goto err_out;
3814                 }
3815                 local_port = cpu_to_be16(port_id);
3816         }
3817         csk->src_port = local_port;
3818
3819 err_out:
3820         dst_release(dst);
3821         return rc;
3822 }
3823
3824 static void cnic_init_csk_state(struct cnic_sock *csk)
3825 {
3826         csk->state = 0;
3827         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3828         clear_bit(SK_F_CLOSING, &csk->flags);
3829 }
3830
3831 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3832 {
3833         struct cnic_local *cp = csk->dev->cnic_priv;
3834         int err = 0;
3835
3836         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3837                 return -EOPNOTSUPP;
3838
3839         if (!cnic_in_use(csk))
3840                 return -EINVAL;
3841
3842         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3843                 return -EINVAL;
3844
3845         cnic_init_csk_state(csk);
3846
3847         err = cnic_get_route(csk, saddr);
3848         if (err)
3849                 goto err_out;
3850
3851         err = cnic_resolve_addr(csk, saddr);
3852         if (!err)
3853                 return 0;
3854
3855 err_out:
3856         clear_bit(SK_F_CONNECT_START, &csk->flags);
3857         return err;
3858 }
3859
3860 static int cnic_cm_abort(struct cnic_sock *csk)
3861 {
3862         struct cnic_local *cp = csk->dev->cnic_priv;
3863         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3864
3865         if (!cnic_in_use(csk))
3866                 return -EINVAL;
3867
3868         if (cnic_abort_prep(csk))
3869                 return cnic_cm_abort_req(csk);
3870
3871         /* Getting here means that we haven't started connect, or
3872          * connect was not successful, or it has been reset by the target.
3873          */
3874
3875         cp->close_conn(csk, opcode);
3876         if (csk->state != opcode) {
3877                 /* Wait for remote reset sequence to complete */
3878                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3879                         msleep(1);
3880
3881                 return -EALREADY;
3882         }
3883
3884         return 0;
3885 }
3886
3887 static int cnic_cm_close(struct cnic_sock *csk)
3888 {
3889         if (!cnic_in_use(csk))
3890                 return -EINVAL;
3891
3892         if (cnic_close_prep(csk)) {
3893                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3894                 return cnic_cm_close_req(csk);
3895         } else {
3896                 /* Wait for remote reset sequence to complete */
3897                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3898                         msleep(1);
3899
3900                 return -EALREADY;
3901         }
3902         return 0;
3903 }
3904
3905 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3906                            u8 opcode)
3907 {
3908         struct cnic_ulp_ops *ulp_ops;
3909         int ulp_type = csk->ulp_type;
3910
3911         rcu_read_lock();
3912         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3913         if (ulp_ops) {
3914                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3915                         ulp_ops->cm_connect_complete(csk);
3916                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3917                         ulp_ops->cm_close_complete(csk);
3918                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3919                         ulp_ops->cm_remote_abort(csk);
3920                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3921                         ulp_ops->cm_abort_complete(csk);
3922                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3923                         ulp_ops->cm_remote_close(csk);
3924         }
3925         rcu_read_unlock();
3926 }
3927
3928 static int cnic_cm_set_pg(struct cnic_sock *csk)
3929 {
3930         if (cnic_offld_prep(csk)) {
3931                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3932                         cnic_cm_update_pg(csk);
3933                 else
3934                         cnic_cm_offload_pg(csk);
3935         }
3936         return 0;
3937 }
3938
3939 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3940 {
3941         struct cnic_local *cp = dev->cnic_priv;
3942         u32 l5_cid = kcqe->pg_host_opaque;
3943         u8 opcode = kcqe->op_code;
3944         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3945
3946         csk_hold(csk);
3947         if (!cnic_in_use(csk))
3948                 goto done;
3949
3950         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3951                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3952                 goto done;
3953         }
3954         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3955         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3956                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3957                 cnic_cm_upcall(cp, csk,
3958                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3959                 goto done;
3960         }
3961
3962         csk->pg_cid = kcqe->pg_cid;
3963         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3964         cnic_cm_conn_req(csk);
3965
3966 done:
3967         csk_put(csk);
3968 }
3969
3970 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3971 {
3972         struct cnic_local *cp = dev->cnic_priv;
3973         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3974         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3975         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3976
3977         ctx->timestamp = jiffies;
3978         ctx->wait_cond = 1;
3979         wake_up(&ctx->waitq);
3980 }
3981
3982 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3983 {
3984         struct cnic_local *cp = dev->cnic_priv;
3985         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3986         u8 opcode = l4kcqe->op_code;
3987         u32 l5_cid;
3988         struct cnic_sock *csk;
3989
3990         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3991                 cnic_process_fcoe_term_conn(dev, kcqe);
3992                 return;
3993         }
3994         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3995             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3996                 cnic_cm_process_offld_pg(dev, l4kcqe);
3997                 return;
3998         }
3999
4000         l5_cid = l4kcqe->conn_id;
4001         if (opcode & 0x80)
4002                 l5_cid = l4kcqe->cid;
4003         if (l5_cid >= MAX_CM_SK_TBL_SZ)
4004                 return;
4005
4006         csk = &cp->csk_tbl[l5_cid];
4007         csk_hold(csk);
4008
4009         if (!cnic_in_use(csk)) {
4010                 csk_put(csk);
4011                 return;
4012         }
4013
4014         switch (opcode) {
4015         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
4016                 if (l4kcqe->status != 0) {
4017                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4018                         cnic_cm_upcall(cp, csk,
4019                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
4020                 }
4021                 break;
4022         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
4023                 if (l4kcqe->status == 0)
4024                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
4025                 else if (l4kcqe->status ==
4026                          L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4027                         set_bit(SK_F_HW_ERR, &csk->flags);
4028
4029                 smp_mb__before_clear_bit();
4030                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4031                 cnic_cm_upcall(cp, csk, opcode);
4032                 break;
4033
4034         case L5CM_RAMROD_CMD_ID_CLOSE: {
4035                 struct iscsi_kcqe *l5kcqe = (struct iscsi_kcqe *) kcqe;
4036
4037                 if (l4kcqe->status != 0 || l5kcqe->completion_status != 0) {
4038                         netdev_warn(dev->netdev, "RAMROD CLOSE compl with status 0x%x completion status 0x%x\n",
4039                                     l4kcqe->status, l5kcqe->completion_status);
4040                         opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
4041                         /* Fall through */
4042                 } else {
4043                         break;
4044                 }
4045         }
4046         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4047         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4048         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4049         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4050         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4051                 if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4052                         set_bit(SK_F_HW_ERR, &csk->flags);
4053
4054                 cp->close_conn(csk, opcode);
4055                 break;
4056
4057         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
4058                 /* after we already sent CLOSE_REQ */
4059                 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
4060                     !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
4061                     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
4062                         cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
4063                 else
4064                         cnic_cm_upcall(cp, csk, opcode);
4065                 break;
4066         }
4067         csk_put(csk);
4068 }
4069
4070 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
4071 {
4072         struct cnic_dev *dev = data;
4073         int i;
4074
4075         for (i = 0; i < num; i++)
4076                 cnic_cm_process_kcqe(dev, kcqe[i]);
4077 }
4078
4079 static struct cnic_ulp_ops cm_ulp_ops = {
4080         .indicate_kcqes         = cnic_cm_indicate_kcqe,
4081 };
4082
4083 static void cnic_cm_free_mem(struct cnic_dev *dev)
4084 {
4085         struct cnic_local *cp = dev->cnic_priv;
4086
4087         kfree(cp->csk_tbl);
4088         cp->csk_tbl = NULL;
4089         cnic_free_id_tbl(&cp->csk_port_tbl);
4090 }
4091
4092 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
4093 {
4094         struct cnic_local *cp = dev->cnic_priv;
4095         u32 port_id;
4096
4097         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
4098                               GFP_KERNEL);
4099         if (!cp->csk_tbl)
4100                 return -ENOMEM;
4101
4102         port_id = prandom_u32();
4103         port_id %= CNIC_LOCAL_PORT_RANGE;
4104         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4105                              CNIC_LOCAL_PORT_MIN, port_id)) {
4106                 cnic_cm_free_mem(dev);
4107                 return -ENOMEM;
4108         }
4109         return 0;
4110 }
4111
4112 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
4113 {
4114         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
4115                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
4116                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
4117                 csk->state = opcode;
4118         }
4119
4120         /* 1. If event opcode matches the expected event in csk->state
4121          * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
4122          *    event
4123          * 3. If the expected event is 0, meaning the connection was never
4124          *    never established, we accept the opcode from cm_abort.
4125          */
4126         if (opcode == csk->state || csk->state == 0 ||
4127             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
4128             csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4129                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
4130                         if (csk->state == 0)
4131                                 csk->state = opcode;
4132                         return 1;
4133                 }
4134         }
4135         return 0;
4136 }
4137
4138 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
4139 {
4140         struct cnic_dev *dev = csk->dev;
4141         struct cnic_local *cp = dev->cnic_priv;
4142
4143         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
4144                 cnic_cm_upcall(cp, csk, opcode);
4145                 return;
4146         }
4147
4148         clear_bit(SK_F_CONNECT_START, &csk->flags);
4149         cnic_close_conn(csk);
4150         csk->state = opcode;
4151         cnic_cm_upcall(cp, csk, opcode);
4152 }
4153
4154 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
4155 {
4156 }
4157
4158 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
4159 {
4160         u32 seed;
4161
4162         seed = prandom_u32();
4163         cnic_ctx_wr(dev, 45, 0, seed);
4164         return 0;
4165 }
4166
4167 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
4168 {
4169         struct cnic_dev *dev = csk->dev;
4170         struct cnic_local *cp = dev->cnic_priv;
4171         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
4172         union l5cm_specific_data l5_data;
4173         u32 cmd = 0;
4174         int close_complete = 0;
4175
4176         switch (opcode) {
4177         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4178         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4179         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4180                 if (cnic_ready_to_close(csk, opcode)) {
4181                         if (test_bit(SK_F_HW_ERR, &csk->flags))
4182                                 close_complete = 1;
4183                         else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4184                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
4185                         else
4186                                 close_complete = 1;
4187                 }
4188                 break;
4189         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4190                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
4191                 break;
4192         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4193                 close_complete = 1;
4194                 break;
4195         }
4196         if (cmd) {
4197                 memset(&l5_data, 0, sizeof(l5_data));
4198
4199                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
4200                                     &l5_data);
4201         } else if (close_complete) {
4202                 ctx->timestamp = jiffies;
4203                 cnic_close_conn(csk);
4204                 cnic_cm_upcall(cp, csk, csk->state);
4205         }
4206 }
4207
4208 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
4209 {
4210         struct cnic_local *cp = dev->cnic_priv;
4211
4212         if (!cp->ctx_tbl)
4213                 return;
4214
4215         if (!netif_running(dev->netdev))
4216                 return;
4217
4218         cnic_bnx2x_delete_wait(dev, 0);
4219
4220         cancel_delayed_work(&cp->delete_task);
4221         flush_workqueue(cnic_wq);
4222
4223         if (atomic_read(&cp->iscsi_conn) != 0)
4224                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
4225                             atomic_read(&cp->iscsi_conn));
4226 }
4227
4228 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
4229 {
4230         struct bnx2x *bp = netdev_priv(dev->netdev);
4231         u32 pfid = bp->pfid;
4232         u32 port = BP_PORT(bp);
4233
4234         cnic_init_bnx2x_mac(dev);
4235         cnic_bnx2x_set_tcp_options(dev, 0, 1);
4236
4237         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4238                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4239
4240         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4241                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4242         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4243                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4244                 DEF_MAX_DA_COUNT);
4245
4246         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4247                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4248         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4249                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4250         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4251                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4252         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4253                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4254
4255         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4256                 DEF_MAX_CWND);
4257         return 0;
4258 }
4259
4260 static void cnic_delete_task(struct work_struct *work)
4261 {
4262         struct cnic_local *cp;
4263         struct cnic_dev *dev;
4264         u32 i;
4265         int need_resched = 0;
4266
4267         cp = container_of(work, struct cnic_local, delete_task.work);
4268         dev = cp->dev;
4269
4270         if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4271                 struct drv_ctl_info info;
4272
4273                 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4274
4275                 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4276                 cp->ethdev->drv_ctl(dev->netdev, &info);
4277         }
4278
4279         for (i = 0; i < cp->max_cid_space; i++) {
4280                 struct cnic_context *ctx = &cp->ctx_tbl[i];
4281                 int err;
4282
4283                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4284                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4285                         continue;
4286
4287                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4288                         need_resched = 1;
4289                         continue;
4290                 }
4291
4292                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4293                         continue;
4294
4295                 err = cnic_bnx2x_destroy_ramrod(dev, i);
4296
4297                 cnic_free_bnx2x_conn_resc(dev, i);
4298                 if (!err) {
4299                         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4300                                 atomic_dec(&cp->iscsi_conn);
4301
4302                         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4303                 }
4304         }
4305
4306         if (need_resched)
4307                 queue_delayed_work(cnic_wq, &cp->delete_task,
4308                                    msecs_to_jiffies(10));
4309
4310 }
4311
4312 static int cnic_cm_open(struct cnic_dev *dev)
4313 {
4314         struct cnic_local *cp = dev->cnic_priv;
4315         int err;
4316
4317         err = cnic_cm_alloc_mem(dev);
4318         if (err)
4319                 return err;
4320
4321         err = cp->start_cm(dev);
4322
4323         if (err)
4324                 goto err_out;
4325
4326         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4327
4328         dev->cm_create = cnic_cm_create;
4329         dev->cm_destroy = cnic_cm_destroy;
4330         dev->cm_connect = cnic_cm_connect;
4331         dev->cm_abort = cnic_cm_abort;
4332         dev->cm_close = cnic_cm_close;
4333         dev->cm_select_dev = cnic_cm_select_dev;
4334
4335         cp->ulp_handle[CNIC_ULP_L4] = dev;
4336         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4337         return 0;
4338
4339 err_out:
4340         cnic_cm_free_mem(dev);
4341         return err;
4342 }
4343
4344 static int cnic_cm_shutdown(struct cnic_dev *dev)
4345 {
4346         struct cnic_local *cp = dev->cnic_priv;
4347         int i;
4348
4349         if (!cp->csk_tbl)
4350                 return 0;
4351
4352         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4353                 struct cnic_sock *csk = &cp->csk_tbl[i];
4354
4355                 clear_bit(SK_F_INUSE, &csk->flags);
4356                 cnic_cm_cleanup(csk);
4357         }
4358         cnic_cm_free_mem(dev);
4359
4360         return 0;
4361 }
4362
4363 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4364 {
4365         u32 cid_addr;
4366         int i;
4367
4368         cid_addr = GET_CID_ADDR(cid);
4369
4370         for (i = 0; i < CTX_SIZE; i += 4)
4371                 cnic_ctx_wr(dev, cid_addr, i, 0);
4372 }
4373
4374 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4375 {
4376         struct cnic_local *cp = dev->cnic_priv;
4377         int ret = 0, i;
4378         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4379
4380         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4381                 return 0;
4382
4383         for (i = 0; i < cp->ctx_blks; i++) {
4384                 int j;
4385                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4386                 u32 val;
4387
4388                 memset(cp->ctx_arr[i].ctx, 0, CNIC_PAGE_SIZE);
4389
4390                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4391                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4392                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4393                         (u64) cp->ctx_arr[i].mapping >> 32);
4394                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4395                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4396                 for (j = 0; j < 10; j++) {
4397
4398                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4399                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4400                                 break;
4401                         udelay(5);
4402                 }
4403                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4404                         ret = -EBUSY;
4405                         break;
4406                 }
4407         }
4408         return ret;
4409 }
4410
4411 static void cnic_free_irq(struct cnic_dev *dev)
4412 {
4413         struct cnic_local *cp = dev->cnic_priv;
4414         struct cnic_eth_dev *ethdev = cp->ethdev;
4415
4416         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4417                 cp->disable_int_sync(dev);
4418                 tasklet_kill(&cp->cnic_irq_task);
4419                 free_irq(ethdev->irq_arr[0].vector, dev);
4420         }
4421 }
4422
4423 static int cnic_request_irq(struct cnic_dev *dev)
4424 {
4425         struct cnic_local *cp = dev->cnic_priv;
4426         struct cnic_eth_dev *ethdev = cp->ethdev;
4427         int err;
4428
4429         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4430         if (err)
4431                 tasklet_disable(&cp->cnic_irq_task);
4432
4433         return err;
4434 }
4435
4436 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4437 {
4438         struct cnic_local *cp = dev->cnic_priv;
4439         struct cnic_eth_dev *ethdev = cp->ethdev;
4440
4441         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4442                 int err, i = 0;
4443                 int sblk_num = cp->status_blk_num;
4444                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4445                            BNX2_HC_SB_CONFIG_1;
4446
4447                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4448
4449                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4450                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4451                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4452
4453                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4454                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4455                              (unsigned long) dev);
4456                 err = cnic_request_irq(dev);
4457                 if (err)
4458                         return err;
4459
4460                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4461                        i < 10) {
4462                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4463                                 1 << (11 + sblk_num));
4464                         udelay(10);
4465                         i++;
4466                         barrier();
4467                 }
4468                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4469                         cnic_free_irq(dev);
4470                         goto failed;
4471                 }
4472
4473         } else {
4474                 struct status_block *sblk = cp->status_blk.gen;
4475                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4476                 int i = 0;
4477
4478                 while (sblk->status_completion_producer_index && i < 10) {
4479                         CNIC_WR(dev, BNX2_HC_COMMAND,
4480                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4481                         udelay(10);
4482                         i++;
4483                         barrier();
4484                 }
4485                 if (sblk->status_completion_producer_index)
4486                         goto failed;
4487
4488         }
4489         return 0;
4490
4491 failed:
4492         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4493         return -EBUSY;
4494 }
4495
4496 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4497 {
4498         struct cnic_local *cp = dev->cnic_priv;
4499         struct cnic_eth_dev *ethdev = cp->ethdev;
4500
4501         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4502                 return;
4503
4504         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4505                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4506 }
4507
4508 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4509 {
4510         struct cnic_local *cp = dev->cnic_priv;
4511         struct cnic_eth_dev *ethdev = cp->ethdev;
4512
4513         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4514                 return;
4515
4516         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4517                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4518         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4519         synchronize_irq(ethdev->irq_arr[0].vector);
4520 }
4521
4522 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4523 {
4524         struct cnic_local *cp = dev->cnic_priv;
4525         struct cnic_eth_dev *ethdev = cp->ethdev;
4526         struct cnic_uio_dev *udev = cp->udev;
4527         u32 cid_addr, tx_cid, sb_id;
4528         u32 val, offset0, offset1, offset2, offset3;
4529         int i;
4530         struct bnx2_tx_bd *txbd;
4531         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4532         struct status_block *s_blk = cp->status_blk.gen;
4533
4534         sb_id = cp->status_blk_num;
4535         tx_cid = 20;
4536         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4537         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4538                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4539
4540                 tx_cid = TX_TSS_CID + sb_id - 1;
4541                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4542                         (TX_TSS_CID << 7));
4543                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4544         }
4545         cp->tx_cons = *cp->tx_cons_ptr;
4546
4547         cid_addr = GET_CID_ADDR(tx_cid);
4548         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
4549                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4550
4551                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4552                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4553
4554                 offset0 = BNX2_L2CTX_TYPE_XI;
4555                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4556                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4557                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4558         } else {
4559                 cnic_init_context(dev, tx_cid);
4560                 cnic_init_context(dev, tx_cid + 1);
4561
4562                 offset0 = BNX2_L2CTX_TYPE;
4563                 offset1 = BNX2_L2CTX_CMD_TYPE;
4564                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4565                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4566         }
4567         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4568         cnic_ctx_wr(dev, cid_addr, offset0, val);
4569
4570         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4571         cnic_ctx_wr(dev, cid_addr, offset1, val);
4572
4573         txbd = udev->l2_ring;
4574
4575         buf_map = udev->l2_buf_map;
4576         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i++, txbd++) {
4577                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4578                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4579         }
4580         val = (u64) ring_map >> 32;
4581         cnic_ctx_wr(dev, cid_addr, offset2, val);
4582         txbd->tx_bd_haddr_hi = val;
4583
4584         val = (u64) ring_map & 0xffffffff;
4585         cnic_ctx_wr(dev, cid_addr, offset3, val);
4586         txbd->tx_bd_haddr_lo = val;
4587 }
4588
4589 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4590 {
4591         struct cnic_local *cp = dev->cnic_priv;
4592         struct cnic_eth_dev *ethdev = cp->ethdev;
4593         struct cnic_uio_dev *udev = cp->udev;
4594         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4595         int i;
4596         struct bnx2_rx_bd *rxbd;
4597         struct status_block *s_blk = cp->status_blk.gen;
4598         dma_addr_t ring_map = udev->l2_ring_map;
4599
4600         sb_id = cp->status_blk_num;
4601         cnic_init_context(dev, 2);
4602         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4603         coal_reg = BNX2_HC_COMMAND;
4604         coal_val = CNIC_RD(dev, coal_reg);
4605         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4606                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4607
4608                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4609                 coal_reg = BNX2_HC_COALESCE_NOW;
4610                 coal_val = 1 << (11 + sb_id);
4611         }
4612         i = 0;
4613         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4614                 CNIC_WR(dev, coal_reg, coal_val);
4615                 udelay(10);
4616                 i++;
4617                 barrier();
4618         }
4619         cp->rx_cons = *cp->rx_cons_ptr;
4620
4621         cid_addr = GET_CID_ADDR(2);
4622         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4623               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4624         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4625
4626         if (sb_id == 0)
4627                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4628         else
4629                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4630         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4631
4632         rxbd = udev->l2_ring + CNIC_PAGE_SIZE;
4633         for (i = 0; i < BNX2_MAX_RX_DESC_CNT; i++, rxbd++) {
4634                 dma_addr_t buf_map;
4635                 int n = (i % cp->l2_rx_ring_size) + 1;
4636
4637                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4638                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4639                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4640                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4641                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4642         }
4643         val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
4644         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4645         rxbd->rx_bd_haddr_hi = val;
4646
4647         val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
4648         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4649         rxbd->rx_bd_haddr_lo = val;
4650
4651         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4652         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4653 }
4654
4655 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4656 {
4657         struct kwqe *wqes[1], l2kwqe;
4658
4659         memset(&l2kwqe, 0, sizeof(l2kwqe));
4660         wqes[0] = &l2kwqe;
4661         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4662                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4663                                KWQE_OPCODE_SHIFT) | 2;
4664         dev->submit_kwqes(dev, wqes, 1);
4665 }
4666
4667 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4668 {
4669         struct cnic_local *cp = dev->cnic_priv;
4670         u32 val;
4671
4672         val = cp->func << 2;
4673
4674         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4675
4676         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4677                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4678         dev->mac_addr[0] = (u8) (val >> 8);
4679         dev->mac_addr[1] = (u8) val;
4680
4681         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4682
4683         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4684                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4685         dev->mac_addr[2] = (u8) (val >> 24);
4686         dev->mac_addr[3] = (u8) (val >> 16);
4687         dev->mac_addr[4] = (u8) (val >> 8);
4688         dev->mac_addr[5] = (u8) val;
4689
4690         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4691
4692         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4693         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4694                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4695
4696         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4697         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4698         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4699 }
4700
4701 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4702 {
4703         struct cnic_local *cp = dev->cnic_priv;
4704         struct cnic_eth_dev *ethdev = cp->ethdev;
4705         struct status_block *sblk = cp->status_blk.gen;
4706         u32 val, kcq_cid_addr, kwq_cid_addr;
4707         int err;
4708
4709         cnic_set_bnx2_mac(dev);
4710
4711         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4712         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4713         if (CNIC_PAGE_BITS > 12)
4714                 val |= (12 - 8)  << 4;
4715         else
4716                 val |= (CNIC_PAGE_BITS - 8)  << 4;
4717
4718         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4719
4720         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4721         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4722         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4723
4724         err = cnic_setup_5709_context(dev, 1);
4725         if (err)
4726                 return err;
4727
4728         cnic_init_context(dev, KWQ_CID);
4729         cnic_init_context(dev, KCQ_CID);
4730
4731         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4732         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4733
4734         cp->max_kwq_idx = MAX_KWQ_IDX;
4735         cp->kwq_prod_idx = 0;
4736         cp->kwq_con_idx = 0;
4737         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4738
4739         if (BNX2_CHIP(cp) == BNX2_CHIP_5706 || BNX2_CHIP(cp) == BNX2_CHIP_5708)
4740                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4741         else
4742                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4743
4744         /* Initialize the kernel work queue context. */
4745         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4746               (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4747         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4748
4749         val = (CNIC_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4750         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4751
4752         val = ((CNIC_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4753         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4754
4755         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4756         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4757
4758         val = (u32) cp->kwq_info.pgtbl_map;
4759         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4760
4761         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4762         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4763
4764         cp->kcq1.sw_prod_idx = 0;
4765         cp->kcq1.hw_prod_idx_ptr =
4766                 &sblk->status_completion_producer_index;
4767
4768         cp->kcq1.status_idx_ptr = &sblk->status_idx;
4769
4770         /* Initialize the kernel complete queue context. */
4771         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4772               (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4773         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4774
4775         val = (CNIC_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4776         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4777
4778         val = ((CNIC_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4779         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4780
4781         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4782         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4783
4784         val = (u32) cp->kcq1.dma.pgtbl_map;
4785         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4786
4787         cp->int_num = 0;
4788         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4789                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4790                 u32 sb_id = cp->status_blk_num;
4791                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4792
4793                 cp->kcq1.hw_prod_idx_ptr =
4794                         &msblk->status_completion_producer_index;
4795                 cp->kcq1.status_idx_ptr = &msblk->status_idx;
4796                 cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
4797                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4798                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4799                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4800         }
4801
4802         /* Enable Commnad Scheduler notification when we write to the
4803          * host producer index of the kernel contexts. */
4804         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4805
4806         /* Enable Command Scheduler notification when we write to either
4807          * the Send Queue or Receive Queue producer indexes of the kernel
4808          * bypass contexts. */
4809         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4810         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4811
4812         /* Notify COM when the driver post an application buffer. */
4813         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4814
4815         /* Set the CP and COM doorbells.  These two processors polls the
4816          * doorbell for a non zero value before running.  This must be done
4817          * after setting up the kernel queue contexts. */
4818         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4819         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4820
4821         cnic_init_bnx2_tx_ring(dev);
4822         cnic_init_bnx2_rx_ring(dev);
4823
4824         err = cnic_init_bnx2_irq(dev);
4825         if (err) {
4826                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4827                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4828                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4829                 return err;
4830         }
4831
4832         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
4833
4834         return 0;
4835 }
4836
4837 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4838 {
4839         struct cnic_local *cp = dev->cnic_priv;
4840         struct cnic_eth_dev *ethdev = cp->ethdev;
4841         u32 start_offset = ethdev->ctx_tbl_offset;
4842         int i;
4843
4844         for (i = 0; i < cp->ctx_blks; i++) {
4845                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4846                 dma_addr_t map = ctx->mapping;
4847
4848                 if (cp->ctx_align) {
4849                         unsigned long mask = cp->ctx_align - 1;
4850
4851                         map = (map + mask) & ~mask;
4852                 }
4853
4854                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4855         }
4856 }
4857
4858 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4859 {
4860         struct cnic_local *cp = dev->cnic_priv;
4861         struct cnic_eth_dev *ethdev = cp->ethdev;
4862         int err = 0;
4863
4864         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4865                      (unsigned long) dev);
4866         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4867                 err = cnic_request_irq(dev);
4868
4869         return err;
4870 }
4871
4872 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4873                                                 u16 sb_id, u8 sb_index,
4874                                                 u8 disable)
4875 {
4876         struct bnx2x *bp = netdev_priv(dev->netdev);
4877
4878         u32 addr = BAR_CSTRORM_INTMEM +
4879                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4880                         offsetof(struct hc_status_block_data_e1x, index_data) +
4881                         sizeof(struct hc_index_data)*sb_index +
4882                         offsetof(struct hc_index_data, flags);
4883         u16 flags = CNIC_RD16(dev, addr);
4884         /* clear and set */
4885         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4886         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4887                   HC_INDEX_DATA_HC_ENABLED);
4888         CNIC_WR16(dev, addr, flags);
4889 }
4890
4891 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4892 {
4893         struct cnic_local *cp = dev->cnic_priv;
4894         struct bnx2x *bp = netdev_priv(dev->netdev);
4895         u8 sb_id = cp->status_blk_num;
4896
4897         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4898                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4899                         offsetof(struct hc_status_block_data_e1x, index_data) +
4900                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4901                         offsetof(struct hc_index_data, timeout), 64 / 4);
4902         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4903 }
4904
4905 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4906 {
4907 }
4908
4909 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4910                                     struct client_init_ramrod_data *data)
4911 {
4912         struct cnic_local *cp = dev->cnic_priv;
4913         struct bnx2x *bp = netdev_priv(dev->netdev);
4914         struct cnic_uio_dev *udev = cp->udev;
4915         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4916         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4917         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4918         int i;
4919         u32 cli = cp->ethdev->iscsi_l2_client_id;
4920         u32 val;
4921
4922         memset(txbd, 0, CNIC_PAGE_SIZE);
4923
4924         buf_map = udev->l2_buf_map;
4925         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4926                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4927                 struct eth_tx_parse_bd_e1x *pbd_e1x =
4928                         &((txbd + 1)->parse_bd_e1x);
4929                 struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2);
4930                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4931
4932                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4933                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4934                 reg_bd->addr_hi = start_bd->addr_hi;
4935                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4936                 start_bd->nbytes = cpu_to_le16(0x10);
4937                 start_bd->nbd = cpu_to_le16(3);
4938                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4939                 start_bd->general_data &= ~ETH_TX_START_BD_PARSE_NBDS;
4940                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4941
4942                 if (BNX2X_CHIP_IS_E2_PLUS(bp))
4943                         pbd_e2->parsing_data = (UNICAST_ADDRESS <<
4944                                 ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT);
4945                 else
4946                         pbd_e1x->global_data = (UNICAST_ADDRESS <<
4947                                 ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT);
4948         }
4949
4950         val = (u64) ring_map >> 32;
4951         txbd->next_bd.addr_hi = cpu_to_le32(val);
4952
4953         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4954
4955         val = (u64) ring_map & 0xffffffff;
4956         txbd->next_bd.addr_lo = cpu_to_le32(val);
4957
4958         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4959
4960         /* Other ramrod params */
4961         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4962         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4963
4964         /* reset xstorm per client statistics */
4965         if (cli < MAX_STAT_COUNTER_ID) {
4966                 data->general.statistics_zero_flg = 1;
4967                 data->general.statistics_en_flg = 1;
4968                 data->general.statistics_counter_id = cli;
4969         }
4970
4971         cp->tx_cons_ptr =
4972                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4973 }
4974
4975 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4976                                     struct client_init_ramrod_data *data)
4977 {
4978         struct cnic_local *cp = dev->cnic_priv;
4979         struct bnx2x *bp = netdev_priv(dev->netdev);
4980         struct cnic_uio_dev *udev = cp->udev;
4981         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4982                                 CNIC_PAGE_SIZE);
4983         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4984                                 (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
4985         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4986         int i;
4987         u32 cli = cp->ethdev->iscsi_l2_client_id;
4988         int cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
4989         u32 val;
4990         dma_addr_t ring_map = udev->l2_ring_map;
4991
4992         /* General data */
4993         data->general.client_id = cli;
4994         data->general.activate_flg = 1;
4995         data->general.sp_client_id = cli;
4996         data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4997         data->general.func_id = bp->pfid;
4998
4999         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
5000                 dma_addr_t buf_map;
5001                 int n = (i % cp->l2_rx_ring_size) + 1;
5002
5003                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
5004                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
5005                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
5006         }
5007
5008         val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
5009         rxbd->addr_hi = cpu_to_le32(val);
5010         data->rx.bd_page_base.hi = cpu_to_le32(val);
5011
5012         val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
5013         rxbd->addr_lo = cpu_to_le32(val);
5014         data->rx.bd_page_base.lo = cpu_to_le32(val);
5015
5016         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
5017         val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) >> 32;
5018         rxcqe->addr_hi = cpu_to_le32(val);
5019         data->rx.cqe_page_base.hi = cpu_to_le32(val);
5020
5021         val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) & 0xffffffff;
5022         rxcqe->addr_lo = cpu_to_le32(val);
5023         data->rx.cqe_page_base.lo = cpu_to_le32(val);
5024
5025         /* Other ramrod params */
5026         data->rx.client_qzone_id = cl_qzone_id;
5027         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
5028         data->rx.status_block_id = BNX2X_DEF_SB_ID;
5029
5030         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
5031
5032         data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
5033         data->rx.outer_vlan_removal_enable_flg = 1;
5034         data->rx.silent_vlan_removal_flg = 1;
5035         data->rx.silent_vlan_value = 0;
5036         data->rx.silent_vlan_mask = 0xffff;
5037
5038         cp->rx_cons_ptr =
5039                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
5040         cp->rx_cons = *cp->rx_cons_ptr;
5041 }
5042
5043 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
5044 {
5045         struct cnic_local *cp = dev->cnic_priv;
5046         struct bnx2x *bp = netdev_priv(dev->netdev);
5047         u32 pfid = bp->pfid;
5048
5049         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
5050                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
5051         cp->kcq1.sw_prod_idx = 0;
5052
5053         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5054                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5055
5056                 cp->kcq1.hw_prod_idx_ptr =
5057                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5058                 cp->kcq1.status_idx_ptr =
5059                         &sb->sb.running_index[SM_RX_ID];
5060         } else {
5061                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
5062
5063                 cp->kcq1.hw_prod_idx_ptr =
5064                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5065                 cp->kcq1.status_idx_ptr =
5066                         &sb->sb.running_index[SM_RX_ID];
5067         }
5068
5069         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5070                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5071
5072                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
5073                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
5074                 cp->kcq2.sw_prod_idx = 0;
5075                 cp->kcq2.hw_prod_idx_ptr =
5076                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
5077                 cp->kcq2.status_idx_ptr =
5078                         &sb->sb.running_index[SM_RX_ID];
5079         }
5080 }
5081
5082 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
5083 {
5084         struct cnic_local *cp = dev->cnic_priv;
5085         struct bnx2x *bp = netdev_priv(dev->netdev);
5086         struct cnic_eth_dev *ethdev = cp->ethdev;
5087         int func, ret;
5088         u32 pfid;
5089
5090         dev->stats_addr = ethdev->addr_drv_info_to_mcp;
5091         cp->func = bp->pf_num;
5092
5093         func = CNIC_FUNC(cp);
5094         pfid = bp->pfid;
5095
5096         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5097                                cp->iscsi_start_cid, 0);
5098
5099         if (ret)
5100                 return -ENOMEM;
5101
5102         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5103                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5104                                         cp->fcoe_start_cid, 0);
5105
5106                 if (ret)
5107                         return -ENOMEM;
5108         }
5109
5110         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
5111
5112         cnic_init_bnx2x_kcq(dev);
5113
5114         /* Only 1 EQ */
5115         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5116         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5117                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5118         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5119                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5120                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5121         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5122                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5123                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5124         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5125                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5126                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5127         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5128                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5129                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5130         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5131                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5132         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5133                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5134         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5135                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5136                 HC_INDEX_ISCSI_EQ_CONS);
5137
5138         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5139                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5140                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
5141         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5142                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5143                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
5144
5145         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
5146                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
5147
5148         cnic_setup_bnx2x_context(dev);
5149
5150         ret = cnic_init_bnx2x_irq(dev);
5151         if (ret)
5152                 return ret;
5153
5154         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
5155         return 0;
5156 }
5157
5158 static void cnic_init_rings(struct cnic_dev *dev)
5159 {
5160         struct cnic_local *cp = dev->cnic_priv;
5161         struct bnx2x *bp = netdev_priv(dev->netdev);
5162         struct cnic_uio_dev *udev = cp->udev;
5163
5164         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5165                 return;
5166
5167         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5168                 cnic_init_bnx2_tx_ring(dev);
5169                 cnic_init_bnx2_rx_ring(dev);
5170                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5171         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5172                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5173                 u32 cid = cp->ethdev->iscsi_l2_cid;
5174                 u32 cl_qzone_id;
5175                 struct client_init_ramrod_data *data;
5176                 union l5cm_specific_data l5_data;
5177                 struct ustorm_eth_rx_producers rx_prods = {0};
5178                 u32 off, i, *cid_ptr;
5179
5180                 rx_prods.bd_prod = 0;
5181                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
5182                 barrier();
5183
5184                 cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
5185
5186                 off = BAR_USTRORM_INTMEM +
5187                         (BNX2X_CHIP_IS_E2_PLUS(bp) ?
5188                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
5189                          USTORM_RX_PRODS_E1X_OFFSET(BP_PORT(bp), cli));
5190
5191                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5192                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5193
5194                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5195
5196                 data = udev->l2_buf;
5197                 cid_ptr = udev->l2_buf + 12;
5198
5199                 memset(data, 0, sizeof(*data));
5200
5201                 cnic_init_bnx2x_tx_ring(dev, data);
5202                 cnic_init_bnx2x_rx_ring(dev, data);
5203
5204                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5205                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5206
5207                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5208
5209                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5210                         cid, ETH_CONNECTION_TYPE, &l5_data);
5211
5212                 i = 0;
5213                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5214                        ++i < 10)
5215                         msleep(1);
5216
5217                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5218                         netdev_err(dev->netdev,
5219                                 "iSCSI CLIENT_SETUP did not complete\n");
5220                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5221                 cnic_ring_ctl(dev, cid, cli, 1);
5222                 *cid_ptr = cid >> 4;
5223                 *(cid_ptr + 1) = cid * bp->db_size;
5224                 *(cid_ptr + 2) = UIO_USE_TX_DOORBELL;
5225         }
5226 }
5227
5228 static void cnic_shutdown_rings(struct cnic_dev *dev)
5229 {
5230         struct cnic_local *cp = dev->cnic_priv;
5231         struct cnic_uio_dev *udev = cp->udev;
5232         void *rx_ring;
5233
5234         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5235                 return;
5236
5237         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5238                 cnic_shutdown_bnx2_rx_ring(dev);
5239         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5240                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5241                 u32 cid = cp->ethdev->iscsi_l2_cid;
5242                 union l5cm_specific_data l5_data;
5243                 int i;
5244
5245                 cnic_ring_ctl(dev, cid, cli, 0);
5246
5247                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5248
5249                 l5_data.phy_address.lo = cli;
5250                 l5_data.phy_address.hi = 0;
5251                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5252                         cid, ETH_CONNECTION_TYPE, &l5_data);
5253                 i = 0;
5254                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5255                        ++i < 10)
5256                         msleep(1);
5257
5258                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5259                         netdev_err(dev->netdev,
5260                                 "iSCSI CLIENT_HALT did not complete\n");
5261                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5262
5263                 memset(&l5_data, 0, sizeof(l5_data));
5264                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5265                         cid, NONE_CONNECTION_TYPE, &l5_data);
5266                 msleep(10);
5267         }
5268         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5269         rx_ring = udev->l2_ring + CNIC_PAGE_SIZE;
5270         memset(rx_ring, 0, CNIC_PAGE_SIZE);
5271 }
5272
5273 static int cnic_register_netdev(struct cnic_dev *dev)
5274 {
5275         struct cnic_local *cp = dev->cnic_priv;
5276         struct cnic_eth_dev *ethdev = cp->ethdev;
5277         int err;
5278
5279         if (!ethdev)
5280                 return -ENODEV;
5281
5282         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5283                 return 0;
5284
5285         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5286         if (err)
5287                 netdev_err(dev->netdev, "register_cnic failed\n");
5288
5289         /* Read iSCSI config again.  On some bnx2x device, iSCSI config
5290          * can change after firmware is downloaded.
5291          */
5292         dev->max_iscsi_conn = ethdev->max_iscsi_conn;
5293         if (ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
5294                 dev->max_iscsi_conn = 0;
5295
5296         return err;
5297 }
5298
5299 static void cnic_unregister_netdev(struct cnic_dev *dev)
5300 {
5301         struct cnic_local *cp = dev->cnic_priv;
5302         struct cnic_eth_dev *ethdev = cp->ethdev;
5303
5304         if (!ethdev)
5305                 return;
5306
5307         ethdev->drv_unregister_cnic(dev->netdev);
5308 }
5309
5310 static int cnic_start_hw(struct cnic_dev *dev)
5311 {
5312         struct cnic_local *cp = dev->cnic_priv;
5313         struct cnic_eth_dev *ethdev = cp->ethdev;
5314         int err;
5315
5316         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5317                 return -EALREADY;
5318
5319         dev->regview = ethdev->io_base;
5320         pci_dev_get(dev->pcidev);
5321         cp->func = PCI_FUNC(dev->pcidev->devfn);
5322         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5323         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5324
5325         err = cp->alloc_resc(dev);
5326         if (err) {
5327                 netdev_err(dev->netdev, "allocate resource failure\n");
5328                 goto err1;
5329         }
5330
5331         err = cp->start_hw(dev);
5332         if (err)
5333                 goto err1;
5334
5335         err = cnic_cm_open(dev);
5336         if (err)
5337                 goto err1;
5338
5339         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5340
5341         cp->enable_int(dev);
5342
5343         return 0;
5344
5345 err1:
5346         cp->free_resc(dev);
5347         pci_dev_put(dev->pcidev);
5348         return err;
5349 }
5350
5351 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5352 {
5353         cnic_disable_bnx2_int_sync(dev);
5354
5355         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5356         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5357
5358         cnic_init_context(dev, KWQ_CID);
5359         cnic_init_context(dev, KCQ_CID);
5360
5361         cnic_setup_5709_context(dev, 0);
5362         cnic_free_irq(dev);
5363
5364         cnic_free_resc(dev);
5365 }
5366
5367
5368 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5369 {
5370         struct cnic_local *cp = dev->cnic_priv;
5371         struct bnx2x *bp = netdev_priv(dev->netdev);
5372         u32 hc_index = HC_INDEX_ISCSI_EQ_CONS;
5373         u32 sb_id = cp->status_blk_num;
5374         u32 idx_off, syn_off;
5375
5376         cnic_free_irq(dev);
5377
5378         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5379                 idx_off = offsetof(struct hc_status_block_e2, index_values) +
5380                           (hc_index * sizeof(u16));
5381
5382                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E2_OFFSET(hc_index, sb_id);
5383         } else {
5384                 idx_off = offsetof(struct hc_status_block_e1x, index_values) +
5385                           (hc_index * sizeof(u16));
5386
5387                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E1X_OFFSET(hc_index, sb_id);
5388         }
5389         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + syn_off, 0);
5390         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_OFFSET(sb_id) +
5391                   idx_off, 0);
5392
5393         *cp->kcq1.hw_prod_idx_ptr = 0;
5394         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5395                 CSTORM_ISCSI_EQ_CONS_OFFSET(bp->pfid, 0), 0);
5396         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5397         cnic_free_resc(dev);
5398 }
5399
5400 static void cnic_stop_hw(struct cnic_dev *dev)
5401 {
5402         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5403                 struct cnic_local *cp = dev->cnic_priv;
5404                 int i = 0;
5405
5406                 /* Need to wait for the ring shutdown event to complete
5407                  * before clearing the CNIC_UP flag.
5408                  */
5409                 while (cp->udev && cp->udev->uio_dev != -1 && i < 15) {
5410                         msleep(100);
5411                         i++;
5412                 }
5413                 cnic_shutdown_rings(dev);
5414                 cp->stop_cm(dev);
5415                 cp->ethdev->drv_state &= ~CNIC_DRV_STATE_HANDLES_IRQ;
5416                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5417                 RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5418                 synchronize_rcu();
5419                 cnic_cm_shutdown(dev);
5420                 cp->stop_hw(dev);
5421                 pci_dev_put(dev->pcidev);
5422         }
5423 }
5424
5425 static void cnic_free_dev(struct cnic_dev *dev)
5426 {
5427         int i = 0;
5428
5429         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5430                 msleep(100);
5431                 i++;
5432         }
5433         if (atomic_read(&dev->ref_count) != 0)
5434                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5435
5436         netdev_info(dev->netdev, "Removed CNIC device\n");
5437         dev_put(dev->netdev);
5438         kfree(dev);
5439 }
5440
5441 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5442                                        struct pci_dev *pdev)
5443 {
5444         struct cnic_dev *cdev;
5445         struct cnic_local *cp;
5446         int alloc_size;
5447
5448         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5449
5450         cdev = kzalloc(alloc_size, GFP_KERNEL);
5451         if (cdev == NULL)
5452                 return NULL;
5453
5454         cdev->netdev = dev;
5455         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5456         cdev->register_device = cnic_register_device;
5457         cdev->unregister_device = cnic_unregister_device;
5458         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5459
5460         cp = cdev->cnic_priv;
5461         cp->dev = cdev;
5462         cp->l2_single_buf_size = 0x400;
5463         cp->l2_rx_ring_size = 3;
5464
5465         spin_lock_init(&cp->cnic_ulp_lock);
5466
5467         netdev_info(dev, "Added CNIC device\n");
5468
5469         return cdev;
5470 }
5471
5472 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5473 {
5474         struct pci_dev *pdev;
5475         struct cnic_dev *cdev;
5476         struct cnic_local *cp;
5477         struct bnx2 *bp = netdev_priv(dev);
5478         struct cnic_eth_dev *ethdev = NULL;
5479
5480         if (bp->cnic_probe)
5481                 ethdev = (bp->cnic_probe)(dev);
5482
5483         if (!ethdev)
5484                 return NULL;
5485
5486         pdev = ethdev->pdev;
5487         if (!pdev)
5488                 return NULL;
5489
5490         dev_hold(dev);
5491         pci_dev_get(pdev);
5492         if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5493              pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5494             (pdev->revision < 0x10)) {
5495                 pci_dev_put(pdev);
5496                 goto cnic_err;
5497         }
5498         pci_dev_put(pdev);
5499
5500         cdev = cnic_alloc_dev(dev, pdev);
5501         if (cdev == NULL)
5502                 goto cnic_err;
5503
5504         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5505         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5506
5507         cp = cdev->cnic_priv;
5508         cp->ethdev = ethdev;
5509         cdev->pcidev = pdev;
5510         cp->chip_id = ethdev->chip_id;
5511
5512         cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5513
5514         cp->cnic_ops = &cnic_bnx2_ops;
5515         cp->start_hw = cnic_start_bnx2_hw;
5516         cp->stop_hw = cnic_stop_bnx2_hw;
5517         cp->setup_pgtbl = cnic_setup_page_tbl;
5518         cp->alloc_resc = cnic_alloc_bnx2_resc;
5519         cp->free_resc = cnic_free_resc;
5520         cp->start_cm = cnic_cm_init_bnx2_hw;
5521         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5522         cp->enable_int = cnic_enable_bnx2_int;
5523         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5524         cp->close_conn = cnic_close_bnx2_conn;
5525         return cdev;
5526
5527 cnic_err:
5528         dev_put(dev);
5529         return NULL;
5530 }
5531
5532 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5533 {
5534         struct pci_dev *pdev;
5535         struct cnic_dev *cdev;
5536         struct cnic_local *cp;
5537         struct bnx2x *bp = netdev_priv(dev);
5538         struct cnic_eth_dev *ethdev = NULL;
5539
5540         if (bp->cnic_probe)
5541                 ethdev = bp->cnic_probe(dev);
5542
5543         if (!ethdev)
5544                 return NULL;
5545
5546         pdev = ethdev->pdev;
5547         if (!pdev)
5548                 return NULL;
5549
5550         dev_hold(dev);
5551         cdev = cnic_alloc_dev(dev, pdev);
5552         if (cdev == NULL) {
5553                 dev_put(dev);
5554                 return NULL;
5555         }
5556
5557         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5558         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5559
5560         cp = cdev->cnic_priv;
5561         cp->ethdev = ethdev;
5562         cdev->pcidev = pdev;
5563         cp->chip_id = ethdev->chip_id;
5564
5565         cdev->stats_addr = ethdev->addr_drv_info_to_mcp;
5566
5567         if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5568                 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5569         if (CNIC_SUPPORTS_FCOE(bp)) {
5570                 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5571                 cdev->max_fcoe_exchanges = ethdev->max_fcoe_exchanges;
5572         }
5573
5574         if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
5575                 cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
5576
5577         memcpy(cdev->mac_addr, ethdev->iscsi_mac, ETH_ALEN);
5578
5579         cp->cnic_ops = &cnic_bnx2x_ops;
5580         cp->start_hw = cnic_start_bnx2x_hw;
5581         cp->stop_hw = cnic_stop_bnx2x_hw;
5582         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5583         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5584         cp->free_resc = cnic_free_resc;
5585         cp->start_cm = cnic_cm_init_bnx2x_hw;
5586         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5587         cp->enable_int = cnic_enable_bnx2x_int;
5588         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5589         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5590                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5591                 cp->arm_int = cnic_arm_bnx2x_e2_msix;
5592         } else {
5593                 cp->ack_int = cnic_ack_bnx2x_msix;
5594                 cp->arm_int = cnic_arm_bnx2x_msix;
5595         }
5596         cp->close_conn = cnic_close_bnx2x_conn;
5597         return cdev;
5598 }
5599
5600 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5601 {
5602         struct ethtool_drvinfo drvinfo;
5603         struct cnic_dev *cdev = NULL;
5604
5605         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5606                 memset(&drvinfo, 0, sizeof(drvinfo));
5607                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5608
5609                 if (!strcmp(drvinfo.driver, "bnx2"))
5610                         cdev = init_bnx2_cnic(dev);
5611                 if (!strcmp(drvinfo.driver, "bnx2x"))
5612                         cdev = init_bnx2x_cnic(dev);
5613                 if (cdev) {
5614                         write_lock(&cnic_dev_lock);
5615                         list_add(&cdev->list, &cnic_dev_list);
5616                         write_unlock(&cnic_dev_lock);
5617                 }
5618         }
5619         return cdev;
5620 }
5621
5622 static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
5623                               u16 vlan_id)
5624 {
5625         int if_type;
5626
5627         rcu_read_lock();
5628         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5629                 struct cnic_ulp_ops *ulp_ops;
5630                 void *ctx;
5631
5632                 ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
5633                 if (!ulp_ops || !ulp_ops->indicate_netevent)
5634                         continue;
5635
5636                 ctx = cp->ulp_handle[if_type];
5637
5638                 ulp_ops->indicate_netevent(ctx, event, vlan_id);
5639         }
5640         rcu_read_unlock();
5641 }
5642
5643 /* netdev event handler */
5644 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5645                                                          void *ptr)
5646 {
5647         struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
5648         struct cnic_dev *dev;
5649         int new_dev = 0;
5650
5651         dev = cnic_from_netdev(netdev);
5652
5653         if (!dev && event == NETDEV_REGISTER) {
5654                 /* Check for the hot-plug device */
5655                 dev = is_cnic_dev(netdev);
5656                 if (dev) {
5657                         new_dev = 1;
5658                         cnic_hold(dev);
5659                 }
5660         }
5661         if (dev) {
5662                 struct cnic_local *cp = dev->cnic_priv;
5663
5664                 if (new_dev)
5665                         cnic_ulp_init(dev);
5666                 else if (event == NETDEV_UNREGISTER)
5667                         cnic_ulp_exit(dev);
5668
5669                 if (event == NETDEV_UP) {
5670                         if (cnic_register_netdev(dev) != 0) {
5671                                 cnic_put(dev);
5672                                 goto done;
5673                         }
5674                         if (!cnic_start_hw(dev))
5675                                 cnic_ulp_start(dev);
5676                 }
5677
5678                 cnic_rcv_netevent(cp, event, 0);
5679
5680                 if (event == NETDEV_GOING_DOWN) {
5681                         cnic_ulp_stop(dev);
5682                         cnic_stop_hw(dev);
5683                         cnic_unregister_netdev(dev);
5684                 } else if (event == NETDEV_UNREGISTER) {
5685                         write_lock(&cnic_dev_lock);
5686                         list_del_init(&dev->list);
5687                         write_unlock(&cnic_dev_lock);
5688
5689                         cnic_put(dev);
5690                         cnic_free_dev(dev);
5691                         goto done;
5692                 }
5693                 cnic_put(dev);
5694         } else {
5695                 struct net_device *realdev;
5696                 u16 vid;
5697
5698                 vid = cnic_get_vlan(netdev, &realdev);
5699                 if (realdev) {
5700                         dev = cnic_from_netdev(realdev);
5701                         if (dev) {
5702                                 vid |= VLAN_TAG_PRESENT;
5703                                 cnic_rcv_netevent(dev->cnic_priv, event, vid);
5704                                 cnic_put(dev);
5705                         }
5706                 }
5707         }
5708 done:
5709         return NOTIFY_DONE;
5710 }
5711
5712 static struct notifier_block cnic_netdev_notifier = {
5713         .notifier_call = cnic_netdev_event
5714 };
5715
5716 static void cnic_release(void)
5717 {
5718         struct cnic_uio_dev *udev;
5719
5720         while (!list_empty(&cnic_udev_list)) {
5721                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5722                                   list);
5723                 cnic_free_uio(udev);
5724         }
5725 }
5726
5727 static int __init cnic_init(void)
5728 {
5729         int rc = 0;
5730
5731         pr_info("%s", version);
5732
5733         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5734         if (rc) {
5735                 cnic_release();
5736                 return rc;
5737         }
5738
5739         cnic_wq = create_singlethread_workqueue("cnic_wq");
5740         if (!cnic_wq) {
5741                 cnic_release();
5742                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5743                 return -ENOMEM;
5744         }
5745
5746         return 0;
5747 }
5748
5749 static void __exit cnic_exit(void)
5750 {
5751         unregister_netdevice_notifier(&cnic_netdev_notifier);
5752         cnic_release();
5753         destroy_workqueue(cnic_wq);
5754 }
5755
5756 module_init(cnic_init);
5757 module_exit(cnic_exit);