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_atomic();
 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_atomic();
 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
 612         if (ulp_type == CNIC_ULP_ISCSI)
 613                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 614
 615         mutex_lock(&cnic_lock);
 616         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 617                 RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
 618                 cnic_put(dev);
 619         } else {
 620                 pr_err("%s: device not registered to this ulp type %d\n",
 621                        __func__, ulp_type);
 622                 mutex_unlock(&cnic_lock);
 623                 return -EINVAL;
 624         }
 625         mutex_unlock(&cnic_lock);
 626
 627         if (ulp_type == CNIC_ULP_FCOE)
 628                 dev->fcoe_cap = NULL;
 629
 630         synchronize_rcu();
 631
 632         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 633                i < 20) {
 634                 msleep(100);
 635                 i++;
 636         }
 637         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 638                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 639
 640         cnic_ulp_ctl(dev, ulp_type, false);
 641
 642         return 0;
 643 }
 644 EXPORT_SYMBOL(cnic_unregister_driver);
 645
 646 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
 647                             u32 next)
 648 {
 649         id_tbl->start = start_id;
 650         id_tbl->max = size;
 651         id_tbl->next = next;
 652         spin_lock_init(&id_tbl->lock);
 653         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 654         if (!id_tbl->table)
 655                 return -ENOMEM;
 656
 657         return 0;
 658 }
 659
 660 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 661 {
 662         kfree(id_tbl->table);
 663         id_tbl->table = NULL;
 664 }
 665
 666 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 667 {
 668         int ret = -1;
 669
 670         id -= id_tbl->start;
 671         if (id >= id_tbl->max)
 672                 return ret;
 673
 674         spin_lock(&id_tbl->lock);
 675         if (!test_bit(id, id_tbl->table)) {
 676                 set_bit(id, id_tbl->table);
 677                 ret = 0;
 678         }
 679         spin_unlock(&id_tbl->lock);
 680         return ret;
 681 }
 682
 683 /* Returns -1 if not successful */
 684 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 685 {
 686         u32 id;
 687
 688         spin_lock(&id_tbl->lock);
 689         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 690         if (id >= id_tbl->max) {
 691                 id = -1;
 692                 if (id_tbl->next != 0) {
 693                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 694                         if (id >= id_tbl->next)
 695                                 id = -1;
 696                 }
 697         }
 698
 699         if (id < id_tbl->max) {
 700                 set_bit(id, id_tbl->table);
 701                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 702                 id += id_tbl->start;
 703         }
 704
 705         spin_unlock(&id_tbl->lock);
 706
 707         return id;
 708 }
 709
 710 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 711 {
 712         if (id == -1)
 713                 return;
 714
 715         id -= id_tbl->start;
 716         if (id >= id_tbl->max)
 717                 return;
 718
 719         clear_bit(id, id_tbl->table);
 720 }
 721
 722 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 723 {
 724         int i;
 725
 726         if (!dma->pg_arr)
 727                 return;
 728
 729         for (i = 0; i < dma->num_pages; i++) {
 730                 if (dma->pg_arr[i]) {
 731                         dma_free_coherent(&dev->pcidev->dev, CNIC_PAGE_SIZE,
 732                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 733                         dma->pg_arr[i] = NULL;
 734                 }
 735         }
 736         if (dma->pgtbl) {
 737                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 738                                   dma->pgtbl, dma->pgtbl_map);
 739                 dma->pgtbl = NULL;
 740         }
 741         kfree(dma->pg_arr);
 742         dma->pg_arr = NULL;
 743         dma->num_pages = 0;
 744 }
 745
 746 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 747 {
 748         int i;
 749         __le32 *page_table = (__le32 *) dma->pgtbl;
 750
 751         for (i = 0; i < dma->num_pages; i++) {
 752                 /* Each entry needs to be in big endian format. */
 753                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 754                 page_table++;
 755                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 756                 page_table++;
 757         }
 758 }
 759
 760 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 761 {
 762         int i;
 763         __le32 *page_table = (__le32 *) dma->pgtbl;
 764
 765         for (i = 0; i < dma->num_pages; i++) {
 766                 /* Each entry needs to be in little endian format. */
 767                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 768                 page_table++;
 769                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 770                 page_table++;
 771         }
 772 }
 773
 774 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 775                           int pages, int use_pg_tbl)
 776 {
 777         int i, size;
 778         struct cnic_local *cp = dev->cnic_priv;
 779
 780         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 781         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 782         if (dma->pg_arr == NULL)
 783                 return -ENOMEM;
 784
 785         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 786         dma->num_pages = pages;
 787
 788         for (i = 0; i < pages; i++) {
 789                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 790                                                     CNIC_PAGE_SIZE,
 791                                                     &dma->pg_map_arr[i],
 792                                                     GFP_ATOMIC);
 793                 if (dma->pg_arr[i] == NULL)
 794                         goto error;
 795         }
 796         if (!use_pg_tbl)
 797                 return 0;
 798
 799         dma->pgtbl_size = ((pages * 8) + CNIC_PAGE_SIZE - 1) &
 800                           ~(CNIC_PAGE_SIZE - 1);
 801         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 802                                         &dma->pgtbl_map, GFP_ATOMIC);
 803         if (dma->pgtbl == NULL)
 804                 goto error;
 805
 806         cp->setup_pgtbl(dev, dma);
 807
 808         return 0;
 809
 810 error:
 811         cnic_free_dma(dev, dma);
 812         return -ENOMEM;
 813 }
 814
 815 static void cnic_free_context(struct cnic_dev *dev)
 816 {
 817         struct cnic_local *cp = dev->cnic_priv;
 818         int i;
 819
 820         for (i = 0; i < cp->ctx_blks; i++) {
 821                 if (cp->ctx_arr[i].ctx) {
 822                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 823                                           cp->ctx_arr[i].ctx,
 824                                           cp->ctx_arr[i].mapping);
 825                         cp->ctx_arr[i].ctx = NULL;
 826                 }
 827         }
 828 }
 829
 830 static void __cnic_free_uio_rings(struct cnic_uio_dev *udev)
 831 {
 832         if (udev->l2_buf) {
 833                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 834                                   udev->l2_buf, udev->l2_buf_map);
 835                 udev->l2_buf = NULL;
 836         }
 837
 838         if (udev->l2_ring) {
 839                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 840                                   udev->l2_ring, udev->l2_ring_map);
 841                 udev->l2_ring = NULL;
 842         }
 843
 844 }
 845
 846 static void __cnic_free_uio(struct cnic_uio_dev *udev)
 847 {
 848         uio_unregister_device(&udev->cnic_uinfo);
 849
 850         __cnic_free_uio_rings(udev);
 851
 852         pci_dev_put(udev->pdev);
 853         kfree(udev);
 854 }
 855
 856 static void cnic_free_uio(struct cnic_uio_dev *udev)
 857 {
 858         if (!udev)
 859                 return;
 860
 861         write_lock(&cnic_dev_lock);
 862         list_del_init(&udev->list);
 863         write_unlock(&cnic_dev_lock);
 864         __cnic_free_uio(udev);
 865 }
 866
 867 static void cnic_free_resc(struct cnic_dev *dev)
 868 {
 869         struct cnic_local *cp = dev->cnic_priv;
 870         struct cnic_uio_dev *udev = cp->udev;
 871
 872         if (udev) {
 873                 udev->dev = NULL;
 874                 cp->udev = NULL;
 875                 if (udev->uio_dev == -1)
 876                         __cnic_free_uio_rings(udev);
 877         }
 878
 879         cnic_free_context(dev);
 880         kfree(cp->ctx_arr);
 881         cp->ctx_arr = NULL;
 882         cp->ctx_blks = 0;
 883
 884         cnic_free_dma(dev, &cp->gbl_buf_info);
 885         cnic_free_dma(dev, &cp->kwq_info);
 886         cnic_free_dma(dev, &cp->kwq_16_data_info);
 887         cnic_free_dma(dev, &cp->kcq2.dma);
 888         cnic_free_dma(dev, &cp->kcq1.dma);
 889         kfree(cp->iscsi_tbl);
 890         cp->iscsi_tbl = NULL;
 891         kfree(cp->ctx_tbl);
 892         cp->ctx_tbl = NULL;
 893
 894         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
 895         cnic_free_id_tbl(&cp->cid_tbl);
 896 }
 897
 898 static int cnic_alloc_context(struct cnic_dev *dev)
 899 {
 900         struct cnic_local *cp = dev->cnic_priv;
 901
 902         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
 903                 int i, k, arr_size;
 904
 905                 cp->ctx_blk_size = CNIC_PAGE_SIZE;
 906                 cp->cids_per_blk = CNIC_PAGE_SIZE / 128;
 907                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 908                            sizeof(struct cnic_ctx);
 909                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 910                 if (cp->ctx_arr == NULL)
 911                         return -ENOMEM;
 912
 913                 k = 0;
 914                 for (i = 0; i < 2; i++) {
 915                         u32 j, reg, off, lo, hi;
 916
 917                         if (i == 0)
 918                                 off = BNX2_PG_CTX_MAP;
 919                         else
 920                                 off = BNX2_ISCSI_CTX_MAP;
 921
 922                         reg = cnic_reg_rd_ind(dev, off);
 923                         lo = reg >> 16;
 924                         hi = reg & 0xffff;
 925                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 926                                 cp->ctx_arr[k].cid = j;
 927                 }
 928
 929                 cp->ctx_blks = k;
 930                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 931                         cp->ctx_blks = 0;
 932                         return -ENOMEM;
 933                 }
 934
 935                 for (i = 0; i < cp->ctx_blks; i++) {
 936                         cp->ctx_arr[i].ctx =
 937                                 dma_alloc_coherent(&dev->pcidev->dev,
 938                                                    CNIC_PAGE_SIZE,
 939                                                    &cp->ctx_arr[i].mapping,
 940                                                    GFP_KERNEL);
 941                         if (cp->ctx_arr[i].ctx == NULL)
 942                                 return -ENOMEM;
 943                 }
 944         }
 945         return 0;
 946 }
 947
 948 static u16 cnic_bnx2_next_idx(u16 idx)
 949 {
 950         return idx + 1;
 951 }
 952
 953 static u16 cnic_bnx2_hw_idx(u16 idx)
 954 {
 955         return idx;
 956 }
 957
 958 static u16 cnic_bnx2x_next_idx(u16 idx)
 959 {
 960         idx++;
 961         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 962                 idx++;
 963
 964         return idx;
 965 }
 966
 967 static u16 cnic_bnx2x_hw_idx(u16 idx)
 968 {
 969         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 970                 idx++;
 971         return idx;
 972 }
 973
 974 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
 975                           bool use_pg_tbl)
 976 {
 977         int err, i, use_page_tbl = 0;
 978         struct kcqe **kcq;
 979
 980         if (use_pg_tbl)
 981                 use_page_tbl = 1;
 982
 983         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
 984         if (err)
 985                 return err;
 986
 987         kcq = (struct kcqe **) info->dma.pg_arr;
 988         info->kcq = kcq;
 989
 990         info->next_idx = cnic_bnx2_next_idx;
 991         info->hw_idx = cnic_bnx2_hw_idx;
 992         if (use_pg_tbl)
 993                 return 0;
 994
 995         info->next_idx = cnic_bnx2x_next_idx;
 996         info->hw_idx = cnic_bnx2x_hw_idx;
 997
 998         for (i = 0; i < KCQ_PAGE_CNT; i++) {
 999                 struct bnx2x_bd_chain_next *next =
1000                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
1001                 int j = i + 1;
1002
1003                 if (j >= KCQ_PAGE_CNT)
1004                         j = 0;
1005                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
1006                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
1007         }
1008         return 0;
1009 }
1010
1011 static int __cnic_alloc_uio_rings(struct cnic_uio_dev *udev, int pages)
1012 {
1013         struct cnic_local *cp = udev->dev->cnic_priv;
1014
1015         if (udev->l2_ring)
1016                 return 0;
1017
1018         udev->l2_ring_size = pages * CNIC_PAGE_SIZE;
1019         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
1020                                            &udev->l2_ring_map,
1021                                            GFP_KERNEL | __GFP_COMP);
1022         if (!udev->l2_ring)
1023                 return -ENOMEM;
1024
1025         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
1026         udev->l2_buf_size = CNIC_PAGE_ALIGN(udev->l2_buf_size);
1027         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1028                                           &udev->l2_buf_map,
1029                                           GFP_KERNEL | __GFP_COMP);
1030         if (!udev->l2_buf) {
1031                 __cnic_free_uio_rings(udev);
1032                 return -ENOMEM;
1033         }
1034
1035         return 0;
1036
1037 }
1038
1039 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
1040 {
1041         struct cnic_local *cp = dev->cnic_priv;
1042         struct cnic_uio_dev *udev;
1043
1044         list_for_each_entry(udev, &cnic_udev_list, list) {
1045                 if (udev->pdev == dev->pcidev) {
1046                         udev->dev = dev;
1047                         if (__cnic_alloc_uio_rings(udev, pages)) {
1048                                 udev->dev = NULL;
1049                                 return -ENOMEM;
1050                         }
1051                         cp->udev = udev;
1052                         return 0;
1053                 }
1054         }
1055
1056         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
1057         if (!udev)
1058                 return -ENOMEM;
1059
1060         udev->uio_dev = -1;
1061
1062         udev->dev = dev;
1063         udev->pdev = dev->pcidev;
1064
1065         if (__cnic_alloc_uio_rings(udev, pages))
1066                 goto err_udev;
1067
1068         list_add(&udev->list, &cnic_udev_list);
1069
1070         pci_dev_get(udev->pdev);
1071
1072         cp->udev = udev;
1073
1074         return 0;
1075
1076  err_udev:
1077         kfree(udev);
1078         return -ENOMEM;
1079 }
1080
1081 static int cnic_init_uio(struct cnic_dev *dev)
1082 {
1083         struct cnic_local *cp = dev->cnic_priv;
1084         struct cnic_uio_dev *udev = cp->udev;
1085         struct uio_info *uinfo;
1086         int ret = 0;
1087
1088         if (!udev)
1089                 return -ENOMEM;
1090
1091         uinfo = &udev->cnic_uinfo;
1092
1093         uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
1094         uinfo->mem[0].internal_addr = dev->regview;
1095         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1096
1097         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1098                 uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
1099                                                      TX_MAX_TSS_RINGS + 1);
1100                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1101                                         CNIC_PAGE_MASK;
1102                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1103                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1104                 else
1105                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1106
1107                 uinfo->name = "bnx2_cnic";
1108         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1109                 uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);
1110
1111                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1112                         CNIC_PAGE_MASK;
1113                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1114
1115                 uinfo->name = "bnx2x_cnic";
1116         }
1117
1118         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1119
1120         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1121         uinfo->mem[2].size = udev->l2_ring_size;
1122         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1123
1124         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1125         uinfo->mem[3].size = udev->l2_buf_size;
1126         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1127
1128         uinfo->version = CNIC_MODULE_VERSION;
1129         uinfo->irq = UIO_IRQ_CUSTOM;
1130
1131         uinfo->open = cnic_uio_open;
1132         uinfo->release = cnic_uio_close;
1133
1134         if (udev->uio_dev == -1) {
1135                 if (!uinfo->priv) {
1136                         uinfo->priv = udev;
1137
1138                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1139                 }
1140         } else {
1141                 cnic_init_rings(dev);
1142         }
1143
1144         return ret;
1145 }
1146
1147 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1148 {
1149         struct cnic_local *cp = dev->cnic_priv;
1150         int ret;
1151
1152         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1153         if (ret)
1154                 goto error;
1155         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1156
1157         ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1158         if (ret)
1159                 goto error;
1160
1161         ret = cnic_alloc_context(dev);
1162         if (ret)
1163                 goto error;
1164
1165         ret = cnic_alloc_uio_rings(dev, 2);
1166         if (ret)
1167                 goto error;
1168
1169         ret = cnic_init_uio(dev);
1170         if (ret)
1171                 goto error;
1172
1173         return 0;
1174
1175 error:
1176         cnic_free_resc(dev);
1177         return ret;
1178 }
1179
1180 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1181 {
1182         struct cnic_local *cp = dev->cnic_priv;
1183         struct bnx2x *bp = netdev_priv(dev->netdev);
1184         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1185         int total_mem, blks, i;
1186
1187         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1188         blks = total_mem / ctx_blk_size;
1189         if (total_mem % ctx_blk_size)
1190                 blks++;
1191
1192         if (blks > cp->ethdev->ctx_tbl_len)
1193                 return -ENOMEM;
1194
1195         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1196         if (cp->ctx_arr == NULL)
1197                 return -ENOMEM;
1198
1199         cp->ctx_blks = blks;
1200         cp->ctx_blk_size = ctx_blk_size;
1201         if (!CHIP_IS_E1(bp))
1202                 cp->ctx_align = 0;
1203         else
1204                 cp->ctx_align = ctx_blk_size;
1205
1206         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1207
1208         for (i = 0; i < blks; i++) {
1209                 cp->ctx_arr[i].ctx =
1210                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1211                                            &cp->ctx_arr[i].mapping,
1212                                            GFP_KERNEL);
1213                 if (cp->ctx_arr[i].ctx == NULL)
1214                         return -ENOMEM;
1215
1216                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1217                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1218                                 cnic_free_context(dev);
1219                                 cp->ctx_blk_size += cp->ctx_align;
1220                                 i = -1;
1221                                 continue;
1222                         }
1223                 }
1224         }
1225         return 0;
1226 }
1227
1228 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1229 {
1230         struct cnic_local *cp = dev->cnic_priv;
1231         struct bnx2x *bp = netdev_priv(dev->netdev);
1232         struct cnic_eth_dev *ethdev = cp->ethdev;
1233         u32 start_cid = ethdev->starting_cid;
1234         int i, j, n, ret, pages;
1235         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1236
1237         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1238         cp->iscsi_start_cid = start_cid;
1239         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1240
1241         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
1242                 cp->max_cid_space += dev->max_fcoe_conn;
1243                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1244                 if (!cp->fcoe_init_cid)
1245                         cp->fcoe_init_cid = 0x10;
1246         }
1247
1248         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1249                                 GFP_KERNEL);
1250         if (!cp->iscsi_tbl)
1251                 goto error;
1252
1253         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1254                                 cp->max_cid_space, GFP_KERNEL);
1255         if (!cp->ctx_tbl)
1256                 goto error;
1257
1258         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1259                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1260                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1261         }
1262
1263         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1264                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1265
1266         pages = CNIC_PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1267                 CNIC_PAGE_SIZE;
1268
1269         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1270         if (ret)
1271                 return -ENOMEM;
1272
1273         n = CNIC_PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1274         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1275                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1276
1277                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1278                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1279                                                    off;
1280
1281                 if ((i % n) == (n - 1))
1282                         j++;
1283         }
1284
1285         ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1286         if (ret)
1287                 goto error;
1288
1289         if (CNIC_SUPPORTS_FCOE(bp)) {
1290                 ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1291                 if (ret)
1292                         goto error;
1293         }
1294
1295         pages = CNIC_PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / CNIC_PAGE_SIZE;
1296         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1297         if (ret)
1298                 goto error;
1299
1300         ret = cnic_alloc_bnx2x_context(dev);
1301         if (ret)
1302                 goto error;
1303
1304         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
1305                 return 0;
1306
1307         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1308
1309         cp->l2_rx_ring_size = 15;
1310
1311         ret = cnic_alloc_uio_rings(dev, 4);
1312         if (ret)
1313                 goto error;
1314
1315         ret = cnic_init_uio(dev);
1316         if (ret)
1317                 goto error;
1318
1319         return 0;
1320
1321 error:
1322         cnic_free_resc(dev);
1323         return -ENOMEM;
1324 }
1325
1326 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1327 {
1328         return cp->max_kwq_idx -
1329                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1330 }
1331
1332 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1333                                   u32 num_wqes)
1334 {
1335         struct cnic_local *cp = dev->cnic_priv;
1336         struct kwqe *prod_qe;
1337         u16 prod, sw_prod, i;
1338
1339         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1340                 return -EAGAIN;         /* bnx2 is down */
1341
1342         spin_lock_bh(&cp->cnic_ulp_lock);
1343         if (num_wqes > cnic_kwq_avail(cp) &&
1344             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1345                 spin_unlock_bh(&cp->cnic_ulp_lock);
1346                 return -EAGAIN;
1347         }
1348
1349         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1350
1351         prod = cp->kwq_prod_idx;
1352         sw_prod = prod & MAX_KWQ_IDX;
1353         for (i = 0; i < num_wqes; i++) {
1354                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1355                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1356                 prod++;
1357                 sw_prod = prod & MAX_KWQ_IDX;
1358         }
1359         cp->kwq_prod_idx = prod;
1360
1361         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1362
1363         spin_unlock_bh(&cp->cnic_ulp_lock);
1364         return 0;
1365 }
1366
1367 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1368                                    union l5cm_specific_data *l5_data)
1369 {
1370         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1371         dma_addr_t map;
1372
1373         map = ctx->kwqe_data_mapping;
1374         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1375         l5_data->phy_address.hi = (u64) map >> 32;
1376         return ctx->kwqe_data;
1377 }
1378
1379 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1380                                 u32 type, union l5cm_specific_data *l5_data)
1381 {
1382         struct cnic_local *cp = dev->cnic_priv;
1383         struct bnx2x *bp = netdev_priv(dev->netdev);
1384         struct l5cm_spe kwqe;
1385         struct kwqe_16 *kwq[1];
1386         u16 type_16;
1387         int ret;
1388
1389         kwqe.hdr.conn_and_cmd_data =
1390                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1391                              BNX2X_HW_CID(bp, cid)));
1392
1393         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1394         type_16 |= (bp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1395                    SPE_HDR_FUNCTION_ID;
1396
1397         kwqe.hdr.type = cpu_to_le16(type_16);
1398         kwqe.hdr.reserved1 = 0;
1399         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1400         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1401
1402         kwq[0] = (struct kwqe_16 *) &kwqe;
1403
1404         spin_lock_bh(&cp->cnic_ulp_lock);
1405         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1406         spin_unlock_bh(&cp->cnic_ulp_lock);
1407
1408         if (ret == 1)
1409                 return 0;
1410
1411         return ret;
1412 }
1413
1414 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1415                                    struct kcqe *cqes[], u32 num_cqes)
1416 {
1417         struct cnic_local *cp = dev->cnic_priv;
1418         struct cnic_ulp_ops *ulp_ops;
1419
1420         rcu_read_lock();
1421         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1422         if (likely(ulp_ops)) {
1423                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1424                                           cqes, num_cqes);
1425         }
1426         rcu_read_unlock();
1427 }
1428
1429 static void cnic_bnx2x_set_tcp_options(struct cnic_dev *dev, int time_stamps,
1430                                        int en_tcp_dack)
1431 {
1432         struct bnx2x *bp = netdev_priv(dev->netdev);
1433         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1434         u16 tstorm_flags = 0;
1435
1436         if (time_stamps) {
1437                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1438                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1439         }
1440         if (en_tcp_dack)
1441                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_DELAYED_ACK_EN;
1442
1443         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1444                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), xstorm_flags);
1445
1446         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1447                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), tstorm_flags);
1448 }
1449
1450 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1451 {
1452         struct cnic_local *cp = dev->cnic_priv;
1453         struct bnx2x *bp = netdev_priv(dev->netdev);
1454         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1455         int hq_bds, pages;
1456         u32 pfid = bp->pfid;
1457
1458         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1459         cp->num_ccells = req1->num_ccells_per_conn;
1460         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1461                               cp->num_iscsi_tasks;
1462         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1463                         BNX2X_ISCSI_R2TQE_SIZE;
1464         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1465         pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1466         hq_bds = pages * (CNIC_PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1467         cp->num_cqs = req1->num_cqs;
1468
1469         if (!dev->max_iscsi_conn)
1470                 return 0;
1471
1472         /* init Tstorm RAM */
1473         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1474                   req1->rq_num_wqes);
1475         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1476                   CNIC_PAGE_SIZE);
1477         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1478                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1479         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1480                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1481                   req1->num_tasks_per_conn);
1482
1483         /* init Ustorm RAM */
1484         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1485                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1486                   req1->rq_buffer_size);
1487         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1488                   CNIC_PAGE_SIZE);
1489         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1490                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1491         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1492                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1493                   req1->num_tasks_per_conn);
1494         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1495                   req1->rq_num_wqes);
1496         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1497                   req1->cq_num_wqes);
1498         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1499                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1500
1501         /* init Xstorm RAM */
1502         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1503                   CNIC_PAGE_SIZE);
1504         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1505                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1506         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1507                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1508                   req1->num_tasks_per_conn);
1509         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1510                   hq_bds);
1511         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1512                   req1->num_tasks_per_conn);
1513         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1514                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1515
1516         /* init Cstorm RAM */
1517         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1518                   CNIC_PAGE_SIZE);
1519         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1520                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1521         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1522                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1523                   req1->num_tasks_per_conn);
1524         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1525                   req1->cq_num_wqes);
1526         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1527                   hq_bds);
1528
1529         cnic_bnx2x_set_tcp_options(dev,
1530                         req1->flags & ISCSI_KWQE_INIT1_TIME_STAMPS_ENABLE,
1531                         req1->flags & ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE);
1532
1533         return 0;
1534 }
1535
1536 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1537 {
1538         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1539         struct bnx2x *bp = netdev_priv(dev->netdev);
1540         u32 pfid = bp->pfid;
1541         struct iscsi_kcqe kcqe;
1542         struct kcqe *cqes[1];
1543
1544         memset(&kcqe, 0, sizeof(kcqe));
1545         if (!dev->max_iscsi_conn) {
1546                 kcqe.completion_status =
1547                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1548                 goto done;
1549         }
1550
1551         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1552                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1553         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1554                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1555                 req2->error_bit_map[1]);
1556
1557         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1558                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1559         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1560                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1561         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1562                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1563                 req2->error_bit_map[1]);
1564
1565         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1566                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1567
1568         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1569
1570 done:
1571         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1572         cqes[0] = (struct kcqe *) &kcqe;
1573         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1574
1575         return 0;
1576 }
1577
1578 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1579 {
1580         struct cnic_local *cp = dev->cnic_priv;
1581         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1582
1583         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1584                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1585
1586                 cnic_free_dma(dev, &iscsi->hq_info);
1587                 cnic_free_dma(dev, &iscsi->r2tq_info);
1588                 cnic_free_dma(dev, &iscsi->task_array_info);
1589                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1590         } else {
1591                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1592         }
1593
1594         ctx->cid = 0;
1595 }
1596
1597 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1598 {
1599         u32 cid;
1600         int ret, pages;
1601         struct cnic_local *cp = dev->cnic_priv;
1602         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1603         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1604
1605         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1606                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1607                 if (cid == -1) {
1608                         ret = -ENOMEM;
1609                         goto error;
1610                 }
1611                 ctx->cid = cid;
1612                 return 0;
1613         }
1614
1615         cid = cnic_alloc_new_id(&cp->cid_tbl);
1616         if (cid == -1) {
1617                 ret = -ENOMEM;
1618                 goto error;
1619         }
1620
1621         ctx->cid = cid;
1622         pages = CNIC_PAGE_ALIGN(cp->task_array_size) / CNIC_PAGE_SIZE;
1623
1624         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1625         if (ret)
1626                 goto error;
1627
1628         pages = CNIC_PAGE_ALIGN(cp->r2tq_size) / CNIC_PAGE_SIZE;
1629         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1630         if (ret)
1631                 goto error;
1632
1633         pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1634         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1635         if (ret)
1636                 goto error;
1637
1638         return 0;
1639
1640 error:
1641         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1642         return ret;
1643 }
1644
1645 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1646                                 struct regpair *ctx_addr)
1647 {
1648         struct cnic_local *cp = dev->cnic_priv;
1649         struct cnic_eth_dev *ethdev = cp->ethdev;
1650         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1651         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1652         unsigned long align_off = 0;
1653         dma_addr_t ctx_map;
1654         void *ctx;
1655
1656         if (cp->ctx_align) {
1657                 unsigned long mask = cp->ctx_align - 1;
1658
1659                 if (cp->ctx_arr[blk].mapping & mask)
1660                         align_off = cp->ctx_align -
1661                                     (cp->ctx_arr[blk].mapping & mask);
1662         }
1663         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1664                 (off * BNX2X_CONTEXT_MEM_SIZE);
1665         ctx = cp->ctx_arr[blk].ctx + align_off +
1666               (off * BNX2X_CONTEXT_MEM_SIZE);
1667         if (init)
1668                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1669
1670         ctx_addr->lo = ctx_map & 0xffffffff;
1671         ctx_addr->hi = (u64) ctx_map >> 32;
1672         return ctx;
1673 }
1674
1675 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1676                                 u32 num)
1677 {
1678         struct cnic_local *cp = dev->cnic_priv;
1679         struct bnx2x *bp = netdev_priv(dev->netdev);
1680         struct iscsi_kwqe_conn_offload1 *req1 =
1681                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1682         struct iscsi_kwqe_conn_offload2 *req2 =
1683                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1684         struct iscsi_kwqe_conn_offload3 *req3;
1685         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1686         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1687         u32 cid = ctx->cid;
1688         u32 hw_cid = BNX2X_HW_CID(bp, cid);
1689         struct iscsi_context *ictx;
1690         struct regpair context_addr;
1691         int i, j, n = 2, n_max;
1692         u8 port = BP_PORT(bp);
1693
1694         ctx->ctx_flags = 0;
1695         if (!req2->num_additional_wqes)
1696                 return -EINVAL;
1697
1698         n_max = req2->num_additional_wqes + 2;
1699
1700         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1701         if (ictx == NULL)
1702                 return -ENOMEM;
1703
1704         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1705
1706         ictx->xstorm_ag_context.hq_prod = 1;
1707
1708         ictx->xstorm_st_context.iscsi.first_burst_length =
1709                 ISCSI_DEF_FIRST_BURST_LEN;
1710         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1711                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1712         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1713                 req1->sq_page_table_addr_lo;
1714         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1715                 req1->sq_page_table_addr_hi;
1716         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1717         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1718         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1719                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1720         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1721                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1722         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1723                 iscsi->hq_info.pgtbl[0];
1724         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1725                 iscsi->hq_info.pgtbl[1];
1726         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1727                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1728         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1729                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1730         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1731                 iscsi->r2tq_info.pgtbl[0];
1732         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1733                 iscsi->r2tq_info.pgtbl[1];
1734         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1735                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1736         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1737                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1738         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1739                 BNX2X_ISCSI_PBL_NOT_CACHED;
1740         ictx->xstorm_st_context.iscsi.flags.flags |=
1741                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1742         ictx->xstorm_st_context.iscsi.flags.flags |=
1743                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1744         ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1745                 ETH_P_8021Q;
1746         if (BNX2X_CHIP_IS_E2_PLUS(bp) &&
1747             bp->common.chip_port_mode == CHIP_2_PORT_MODE) {
1748
1749                 port = 0;
1750         }
1751         ictx->xstorm_st_context.common.flags =
1752                 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1753         ictx->xstorm_st_context.common.flags =
1754                 port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1755
1756         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1757         /* TSTORM requires the base address of RQ DB & not PTE */
1758         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1759                 req2->rq_page_table_addr_lo & CNIC_PAGE_MASK;
1760         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1761                 req2->rq_page_table_addr_hi;
1762         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1763         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1764         ictx->tstorm_st_context.tcp.flags2 |=
1765                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1766         ictx->tstorm_st_context.tcp.ooo_support_mode =
1767                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1768
1769         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1770
1771         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1772                 req2->rq_page_table_addr_lo;
1773         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1774                 req2->rq_page_table_addr_hi;
1775         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1776         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1777         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1778                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1779         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1780                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1781         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1782                 iscsi->r2tq_info.pgtbl[0];
1783         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1784                 iscsi->r2tq_info.pgtbl[1];
1785         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1786                 req1->cq_page_table_addr_lo;
1787         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1788                 req1->cq_page_table_addr_hi;
1789         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1790         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1791         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1792         ictx->ustorm_st_context.task_pbe_cache_index =
1793                 BNX2X_ISCSI_PBL_NOT_CACHED;
1794         ictx->ustorm_st_context.task_pdu_cache_index =
1795                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1796
1797         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1798                 if (j == 3) {
1799                         if (n >= n_max)
1800                                 break;
1801                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1802                         j = 0;
1803                 }
1804                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1805                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1806                         req3->qp_first_pte[j].hi;
1807                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1808                         req3->qp_first_pte[j].lo;
1809         }
1810
1811         ictx->ustorm_st_context.task_pbl_base.lo =
1812                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1813         ictx->ustorm_st_context.task_pbl_base.hi =
1814                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1815         ictx->ustorm_st_context.tce_phy_addr.lo =
1816                 iscsi->task_array_info.pgtbl[0];
1817         ictx->ustorm_st_context.tce_phy_addr.hi =
1818                 iscsi->task_array_info.pgtbl[1];
1819         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1820         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1821         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1822         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1823                 ISCSI_DEF_MAX_BURST_LEN;
1824         ictx->ustorm_st_context.negotiated_rx |=
1825                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1826                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1827
1828         ictx->cstorm_st_context.hq_pbl_base.lo =
1829                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1830         ictx->cstorm_st_context.hq_pbl_base.hi =
1831                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1832         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1833         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1834         ictx->cstorm_st_context.task_pbl_base.lo =
1835                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1836         ictx->cstorm_st_context.task_pbl_base.hi =
1837                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1838         /* CSTORM and USTORM initialization is different, CSTORM requires
1839          * CQ DB base & not PTE addr */
1840         ictx->cstorm_st_context.cq_db_base.lo =
1841                 req1->cq_page_table_addr_lo & CNIC_PAGE_MASK;
1842         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1843         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1844         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1845         for (i = 0; i < cp->num_cqs; i++) {
1846                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1847                         ISCSI_INITIAL_SN;
1848                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1849                         ISCSI_INITIAL_SN;
1850         }
1851
1852         ictx->xstorm_ag_context.cdu_reserved =
1853                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1854                                        ISCSI_CONNECTION_TYPE);
1855         ictx->ustorm_ag_context.cdu_usage =
1856                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1857                                        ISCSI_CONNECTION_TYPE);
1858         return 0;
1859
1860 }
1861
1862 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1863                                    u32 num, int *work)
1864 {
1865         struct iscsi_kwqe_conn_offload1 *req1;
1866         struct iscsi_kwqe_conn_offload2 *req2;
1867         struct cnic_local *cp = dev->cnic_priv;
1868         struct bnx2x *bp = netdev_priv(dev->netdev);
1869         struct cnic_context *ctx;
1870         struct iscsi_kcqe kcqe;
1871         struct kcqe *cqes[1];
1872         u32 l5_cid;
1873         int ret = 0;
1874
1875         if (num < 2) {
1876                 *work = num;
1877                 return -EINVAL;
1878         }
1879
1880         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1881         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1882         if ((num - 2) < req2->num_additional_wqes) {
1883                 *work = num;
1884                 return -EINVAL;
1885         }
1886         *work = 2 + req2->num_additional_wqes;
1887
1888         l5_cid = req1->iscsi_conn_id;
1889         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1890                 return -EINVAL;
1891
1892         memset(&kcqe, 0, sizeof(kcqe));
1893         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1894         kcqe.iscsi_conn_id = l5_cid;
1895         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1896
1897         ctx = &cp->ctx_tbl[l5_cid];
1898         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1899                 kcqe.completion_status =
1900                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1901                 goto done;
1902         }
1903
1904         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1905                 atomic_dec(&cp->iscsi_conn);
1906                 goto done;
1907         }
1908         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1909         if (ret) {
1910                 atomic_dec(&cp->iscsi_conn);
1911                 ret = 0;
1912                 goto done;
1913         }
1914         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1915         if (ret < 0) {
1916                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1917                 atomic_dec(&cp->iscsi_conn);
1918                 goto done;
1919         }
1920
1921         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1922         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(bp, cp->ctx_tbl[l5_cid].cid);
1923
1924 done:
1925         cqes[0] = (struct kcqe *) &kcqe;
1926         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1927         return 0;
1928 }
1929
1930
1931 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1932 {
1933         struct cnic_local *cp = dev->cnic_priv;
1934         struct iscsi_kwqe_conn_update *req =
1935                 (struct iscsi_kwqe_conn_update *) kwqe;
1936         void *data;
1937         union l5cm_specific_data l5_data;
1938         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1939         int ret;
1940
1941         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1942                 return -EINVAL;
1943
1944         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1945         if (!data)
1946                 return -ENOMEM;
1947
1948         memcpy(data, kwqe, sizeof(struct kwqe));
1949
1950         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1951                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1952         return ret;
1953 }
1954
1955 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1956 {
1957         struct cnic_local *cp = dev->cnic_priv;
1958         struct bnx2x *bp = netdev_priv(dev->netdev);
1959         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1960         union l5cm_specific_data l5_data;
1961         int ret;
1962         u32 hw_cid;
1963
1964         init_waitqueue_head(&ctx->waitq);
1965         ctx->wait_cond = 0;
1966         memset(&l5_data, 0, sizeof(l5_data));
1967         hw_cid = BNX2X_HW_CID(bp, ctx->cid);
1968
1969         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1970                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1971
1972         if (ret == 0) {
1973                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1974                 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1975                         return -EBUSY;
1976         }
1977
1978         return 0;
1979 }
1980
1981 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1982 {
1983         struct cnic_local *cp = dev->cnic_priv;
1984         struct iscsi_kwqe_conn_destroy *req =
1985                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1986         u32 l5_cid = req->reserved0;
1987         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1988         int ret = 0;
1989         struct iscsi_kcqe kcqe;
1990         struct kcqe *cqes[1];
1991
1992         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1993                 goto skip_cfc_delete;
1994
1995         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
1996                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
1997
1998                 if (delta > (2 * HZ))
1999                         delta = 0;
2000
2001                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2002                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
2003                 goto destroy_reply;
2004         }
2005
2006         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
2007
2008 skip_cfc_delete:
2009         cnic_free_bnx2x_conn_resc(dev, l5_cid);
2010
2011         if (!ret) {
2012                 atomic_dec(&cp->iscsi_conn);
2013                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2014         }
2015
2016 destroy_reply:
2017         memset(&kcqe, 0, sizeof(kcqe));
2018         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
2019         kcqe.iscsi_conn_id = l5_cid;
2020         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
2021         kcqe.iscsi_conn_context_id = req->context_id;
2022
2023         cqes[0] = (struct kcqe *) &kcqe;
2024         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
2025
2026         return 0;
2027 }
2028
2029 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
2030                                       struct l4_kwq_connect_req1 *kwqe1,
2031                                       struct l4_kwq_connect_req3 *kwqe3,
2032                                       struct l5cm_active_conn_buffer *conn_buf)
2033 {
2034         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
2035         struct l5cm_xstorm_conn_buffer *xstorm_buf =
2036                 &conn_buf->xstorm_conn_buffer;
2037         struct l5cm_tstorm_conn_buffer *tstorm_buf =
2038                 &conn_buf->tstorm_conn_buffer;
2039         struct regpair context_addr;
2040         u32 cid = BNX2X_SW_CID(kwqe1->cid);
2041         struct in6_addr src_ip, dst_ip;
2042         int i;
2043         u32 *addrp;
2044
2045         addrp = (u32 *) &conn_addr->local_ip_addr;
2046         for (i = 0; i < 4; i++, addrp++)
2047                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2048
2049         addrp = (u32 *) &conn_addr->remote_ip_addr;
2050         for (i = 0; i < 4; i++, addrp++)
2051                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2052
2053         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
2054
2055         xstorm_buf->context_addr.hi = context_addr.hi;
2056         xstorm_buf->context_addr.lo = context_addr.lo;
2057         xstorm_buf->mss = 0xffff;
2058         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
2059         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
2060                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
2061         xstorm_buf->pseudo_header_checksum =
2062                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
2063
2064         if (kwqe3->ka_timeout) {
2065                 tstorm_buf->ka_enable = 1;
2066                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
2067                 tstorm_buf->ka_interval = kwqe3->ka_interval;
2068                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
2069         }
2070         tstorm_buf->max_rt_time = 0xffffffff;
2071 }
2072
2073 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2074 {
2075         struct bnx2x *bp = netdev_priv(dev->netdev);
2076         u32 pfid = bp->pfid;
2077         u8 *mac = dev->mac_addr;
2078
2079         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2080                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2081         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2082                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2083         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2084                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2085         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2086                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2087         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2088                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2089         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2090                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2091
2092         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2093                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2094         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2095                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2096                  mac[4]);
2097         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2098                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2099         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2100                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2101                  mac[2]);
2102         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2103                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2104         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2105                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2106                  mac[0]);
2107 }
2108
2109 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2110                               u32 num, int *work)
2111 {
2112         struct cnic_local *cp = dev->cnic_priv;
2113         struct bnx2x *bp = netdev_priv(dev->netdev);
2114         struct l4_kwq_connect_req1 *kwqe1 =
2115                 (struct l4_kwq_connect_req1 *) wqes[0];
2116         struct l4_kwq_connect_req3 *kwqe3;
2117         struct l5cm_active_conn_buffer *conn_buf;
2118         struct l5cm_conn_addr_params *conn_addr;
2119         union l5cm_specific_data l5_data;
2120         u32 l5_cid = kwqe1->pg_cid;
2121         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2122         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2123         int ret;
2124
2125         if (num < 2) {
2126                 *work = num;
2127                 return -EINVAL;
2128         }
2129
2130         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2131                 *work = 3;
2132         else
2133                 *work = 2;
2134
2135         if (num < *work) {
2136                 *work = num;
2137                 return -EINVAL;
2138         }
2139
2140         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2141                 netdev_err(dev->netdev, "conn_buf size too big\n");
2142                 return -ENOMEM;
2143         }
2144         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2145         if (!conn_buf)
2146                 return -ENOMEM;
2147
2148         memset(conn_buf, 0, sizeof(*conn_buf));
2149
2150         conn_addr = &conn_buf->conn_addr_buf;
2151         conn_addr->remote_addr_0 = csk->ha[0];
2152         conn_addr->remote_addr_1 = csk->ha[1];
2153         conn_addr->remote_addr_2 = csk->ha[2];
2154         conn_addr->remote_addr_3 = csk->ha[3];
2155         conn_addr->remote_addr_4 = csk->ha[4];
2156         conn_addr->remote_addr_5 = csk->ha[5];
2157
2158         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2159                 struct l4_kwq_connect_req2 *kwqe2 =
2160                         (struct l4_kwq_connect_req2 *) wqes[1];
2161
2162                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2163                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2164                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2165
2166                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2167                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2168                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2169                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2170         }
2171         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2172
2173         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2174         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2175         conn_addr->local_tcp_port = kwqe1->src_port;
2176         conn_addr->remote_tcp_port = kwqe1->dst_port;
2177
2178         conn_addr->pmtu = kwqe3->pmtu;
2179         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2180
2181         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2182                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(bp->pfid), csk->vlan_id);
2183
2184         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2185                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2186         if (!ret)
2187                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2188
2189         return ret;
2190 }
2191
2192 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2193 {
2194         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2195         union l5cm_specific_data l5_data;
2196         int ret;
2197
2198         memset(&l5_data, 0, sizeof(l5_data));
2199         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2200                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2201         return ret;
2202 }
2203
2204 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2205 {
2206         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2207         union l5cm_specific_data l5_data;
2208         int ret;
2209
2210         memset(&l5_data, 0, sizeof(l5_data));
2211         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2212                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2213         return ret;
2214 }
2215 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2216 {
2217         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2218         struct l4_kcq kcqe;
2219         struct kcqe *cqes[1];
2220
2221         memset(&kcqe, 0, sizeof(kcqe));
2222         kcqe.pg_host_opaque = req->host_opaque;
2223         kcqe.pg_cid = req->host_opaque;
2224         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2225         cqes[0] = (struct kcqe *) &kcqe;
2226         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2227         return 0;
2228 }
2229
2230 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2231 {
2232         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2233         struct l4_kcq kcqe;
2234         struct kcqe *cqes[1];
2235
2236         memset(&kcqe, 0, sizeof(kcqe));
2237         kcqe.pg_host_opaque = req->pg_host_opaque;
2238         kcqe.pg_cid = req->pg_cid;
2239         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2240         cqes[0] = (struct kcqe *) &kcqe;
2241         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2242         return 0;
2243 }
2244
2245 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2246 {
2247         struct fcoe_kwqe_stat *req;
2248         struct fcoe_stat_ramrod_params *fcoe_stat;
2249         union l5cm_specific_data l5_data;
2250         struct cnic_local *cp = dev->cnic_priv;
2251         struct bnx2x *bp = netdev_priv(dev->netdev);
2252         int ret;
2253         u32 cid;
2254
2255         req = (struct fcoe_kwqe_stat *) kwqe;
2256         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2257
2258         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2259         if (!fcoe_stat)
2260                 return -ENOMEM;
2261
2262         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2263         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2264
2265         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2266                                   FCOE_CONNECTION_TYPE, &l5_data);
2267         return ret;
2268 }
2269
2270 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2271                                  u32 num, int *work)
2272 {
2273         int ret;
2274         struct cnic_local *cp = dev->cnic_priv;
2275         struct bnx2x *bp = netdev_priv(dev->netdev);
2276         u32 cid;
2277         struct fcoe_init_ramrod_params *fcoe_init;
2278         struct fcoe_kwqe_init1 *req1;
2279         struct fcoe_kwqe_init2 *req2;
2280         struct fcoe_kwqe_init3 *req3;
2281         union l5cm_specific_data l5_data;
2282
2283         if (num < 3) {
2284                 *work = num;
2285                 return -EINVAL;
2286         }
2287         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2288         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2289         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2290         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2291                 *work = 1;
2292                 return -EINVAL;
2293         }
2294         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2295                 *work = 2;
2296                 return -EINVAL;
2297         }
2298
2299         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2300                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2301                 return -ENOMEM;
2302         }
2303         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2304         if (!fcoe_init)
2305                 return -ENOMEM;
2306
2307         memset(fcoe_init, 0, sizeof(*fcoe_init));
2308         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2309         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2310         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2311         fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2312         fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2313         fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2314
2315         fcoe_init->sb_num = cp->status_blk_num;
2316         fcoe_init->eq_prod = MAX_KCQ_IDX;
2317         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2318         cp->kcq2.sw_prod_idx = 0;
2319
2320         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2321         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2322                                   FCOE_CONNECTION_TYPE, &l5_data);
2323         *work = 3;
2324         return ret;
2325 }
2326
2327 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2328                                  u32 num, int *work)
2329 {
2330         int ret = 0;
2331         u32 cid = -1, l5_cid;
2332         struct cnic_local *cp = dev->cnic_priv;
2333         struct bnx2x *bp = netdev_priv(dev->netdev);
2334         struct fcoe_kwqe_conn_offload1 *req1;
2335         struct fcoe_kwqe_conn_offload2 *req2;
2336         struct fcoe_kwqe_conn_offload3 *req3;
2337         struct fcoe_kwqe_conn_offload4 *req4;
2338         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2339         struct cnic_context *ctx;
2340         struct fcoe_context *fctx;
2341         struct regpair ctx_addr;
2342         union l5cm_specific_data l5_data;
2343         struct fcoe_kcqe kcqe;
2344         struct kcqe *cqes[1];
2345
2346         if (num < 4) {
2347                 *work = num;
2348                 return -EINVAL;
2349         }
2350         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2351         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2352         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2353         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2354
2355         *work = 4;
2356
2357         l5_cid = req1->fcoe_conn_id;
2358         if (l5_cid >= dev->max_fcoe_conn)
2359                 goto err_reply;
2360
2361         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2362
2363         ctx = &cp->ctx_tbl[l5_cid];
2364         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2365                 goto err_reply;
2366
2367         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2368         if (ret) {
2369                 ret = 0;
2370                 goto err_reply;
2371         }
2372         cid = ctx->cid;
2373
2374         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2375         if (fctx) {
2376                 u32 hw_cid = BNX2X_HW_CID(bp, cid);
2377                 u32 val;
2378
2379                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2380                                              FCOE_CONNECTION_TYPE);
2381                 fctx->xstorm_ag_context.cdu_reserved = val;
2382                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2383                                              FCOE_CONNECTION_TYPE);
2384                 fctx->ustorm_ag_context.cdu_usage = val;
2385         }
2386         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2387                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2388                 goto err_reply;
2389         }
2390         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2391         if (!fcoe_offload)
2392                 goto err_reply;
2393
2394         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2395         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2396         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2397         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2398         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2399
2400         cid = BNX2X_HW_CID(bp, cid);
2401         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2402                                   FCOE_CONNECTION_TYPE, &l5_data);
2403         if (!ret)
2404                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2405
2406         return ret;
2407
2408 err_reply:
2409         if (cid != -1)
2410                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2411
2412         memset(&kcqe, 0, sizeof(kcqe));
2413         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2414         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2415         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2416
2417         cqes[0] = (struct kcqe *) &kcqe;
2418         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2419         return ret;
2420 }
2421
2422 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2423 {
2424         struct fcoe_kwqe_conn_enable_disable *req;
2425         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2426         union l5cm_specific_data l5_data;
2427         int ret;
2428         u32 cid, l5_cid;
2429         struct cnic_local *cp = dev->cnic_priv;
2430
2431         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2432         cid = req->context_id;
2433         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2434
2435         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2436                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2437                 return -ENOMEM;
2438         }
2439         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2440         if (!fcoe_enable)
2441                 return -ENOMEM;
2442
2443         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2444         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2445         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2446                                   FCOE_CONNECTION_TYPE, &l5_data);
2447         return ret;
2448 }
2449
2450 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2451 {
2452         struct fcoe_kwqe_conn_enable_disable *req;
2453         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2454         union l5cm_specific_data l5_data;
2455         int ret;
2456         u32 cid, l5_cid;
2457         struct cnic_local *cp = dev->cnic_priv;
2458
2459         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2460         cid = req->context_id;
2461         l5_cid = req->conn_id;
2462         if (l5_cid >= dev->max_fcoe_conn)
2463                 return -EINVAL;
2464
2465         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2466
2467         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2468                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2469                 return -ENOMEM;
2470         }
2471         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2472         if (!fcoe_disable)
2473                 return -ENOMEM;
2474
2475         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2476         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2477         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2478                                   FCOE_CONNECTION_TYPE, &l5_data);
2479         return ret;
2480 }
2481
2482 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2483 {
2484         struct fcoe_kwqe_conn_destroy *req;
2485         union l5cm_specific_data l5_data;
2486         int ret;
2487         u32 cid, l5_cid;
2488         struct cnic_local *cp = dev->cnic_priv;
2489         struct cnic_context *ctx;
2490         struct fcoe_kcqe kcqe;
2491         struct kcqe *cqes[1];
2492
2493         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2494         cid = req->context_id;
2495         l5_cid = req->conn_id;
2496         if (l5_cid >= dev->max_fcoe_conn)
2497                 return -EINVAL;
2498
2499         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2500
2501         ctx = &cp->ctx_tbl[l5_cid];
2502
2503         init_waitqueue_head(&ctx->waitq);
2504         ctx->wait_cond = 0;
2505
2506         memset(&kcqe, 0, sizeof(kcqe));
2507         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2508         memset(&l5_data, 0, sizeof(l5_data));
2509         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2510                                   FCOE_CONNECTION_TYPE, &l5_data);
2511         if (ret == 0) {
2512                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2513                 if (ctx->wait_cond)
2514                         kcqe.completion_status = 0;
2515         }
2516
2517         set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2518         queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2519
2520         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2521         kcqe.fcoe_conn_id = req->conn_id;
2522         kcqe.fcoe_conn_context_id = cid;
2523
2524         cqes[0] = (struct kcqe *) &kcqe;
2525         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2526         return ret;
2527 }
2528
2529 static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2530 {
2531         struct cnic_local *cp = dev->cnic_priv;
2532         u32 i;
2533
2534         for (i = start_cid; i < cp->max_cid_space; i++) {
2535                 struct cnic_context *ctx = &cp->ctx_tbl[i];
2536                 int j;
2537
2538                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2539                         msleep(10);
2540
2541                 for (j = 0; j < 5; j++) {
2542                         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2543                                 break;
2544                         msleep(20);
2545                 }
2546
2547                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2548                         netdev_warn(dev->netdev, "CID %x not deleted\n",
2549                                    ctx->cid);
2550         }
2551 }
2552
2553 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2554 {
2555         struct fcoe_kwqe_destroy *req;
2556         union l5cm_specific_data l5_data;
2557         struct cnic_local *cp = dev->cnic_priv;
2558         struct bnx2x *bp = netdev_priv(dev->netdev);
2559         int ret;
2560         u32 cid;
2561
2562         cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2563
2564         req = (struct fcoe_kwqe_destroy *) kwqe;
2565         cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2566
2567         memset(&l5_data, 0, sizeof(l5_data));
2568         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2569                                   FCOE_CONNECTION_TYPE, &l5_data);
2570         return ret;
2571 }
2572
2573 static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2574 {
2575         struct cnic_local *cp = dev->cnic_priv;
2576         struct kcqe kcqe;
2577         struct kcqe *cqes[1];
2578         u32 cid;
2579         u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2580         u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2581         u32 kcqe_op;
2582         int ulp_type;
2583
2584         cid = kwqe->kwqe_info0;
2585         memset(&kcqe, 0, sizeof(kcqe));
2586
2587         if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2588                 u32 l5_cid = 0;
2589
2590                 ulp_type = CNIC_ULP_FCOE;
2591                 if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2592                         struct fcoe_kwqe_conn_enable_disable *req;
2593
2594                         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2595                         kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2596                         cid = req->context_id;
2597                         l5_cid = req->conn_id;
2598                 } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2599                         kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2600                 } else {
2601                         return;
2602                 }
2603                 kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2604                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2605                 kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2606                 kcqe.kcqe_info2 = cid;
2607                 kcqe.kcqe_info0 = l5_cid;
2608
2609         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2610                 ulp_type = CNIC_ULP_ISCSI;
2611                 if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2612                         cid = kwqe->kwqe_info1;
2613
2614                 kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2615                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2616                 kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2617                 kcqe.kcqe_info2 = cid;
2618                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2619
2620         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2621                 struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2622
2623                 ulp_type = CNIC_ULP_L4;
2624                 if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2625                         kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2626                 else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2627                         kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2628                 else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2629                         kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2630                 else
2631                         return;
2632
2633                 kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2634                                     KCQE_FLAGS_LAYER_MASK_L4;
2635                 l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2636                 l4kcqe->cid = cid;
2637                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2638         } else {
2639                 return;
2640         }
2641
2642         cqes[0] = &kcqe;
2643         cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2644 }
2645
2646 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2647                                          struct kwqe *wqes[], u32 num_wqes)
2648 {
2649         int i, work, ret;
2650         u32 opcode;
2651         struct kwqe *kwqe;
2652
2653         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2654                 return -EAGAIN;         /* bnx2 is down */
2655
2656         for (i = 0; i < num_wqes; ) {
2657                 kwqe = wqes[i];
2658                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2659                 work = 1;
2660
2661                 switch (opcode) {
2662                 case ISCSI_KWQE_OPCODE_INIT1:
2663                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2664                         break;
2665                 case ISCSI_KWQE_OPCODE_INIT2:
2666                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2667                         break;
2668                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2669                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2670                                                      num_wqes - i, &work);
2671                         break;
2672                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2673                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2674                         break;
2675                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2676                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2677                         break;
2678                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2679                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2680                                                  &work);
2681                         break;
2682                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2683                         ret = cnic_bnx2x_close(dev, kwqe);
2684                         break;
2685                 case L4_KWQE_OPCODE_VALUE_RESET:
2686                         ret = cnic_bnx2x_reset(dev, kwqe);
2687                         break;
2688                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2689                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2690                         break;
2691                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2692                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2693                         break;
2694                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2695                         ret = 0;
2696                         break;
2697                 default:
2698                         ret = 0;
2699                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2700                                    opcode);
2701                         break;
2702                 }
2703                 if (ret < 0) {
2704                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2705                                    opcode);
2706
2707                         /* Possibly bnx2x parity error, send completion
2708                          * to ulp drivers with error code to speed up
2709                          * cleanup and reset recovery.
2710                          */
2711                         if (ret == -EIO || ret == -EAGAIN)
2712                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2713                 }
2714                 i += work;
2715         }
2716         return 0;
2717 }
2718
2719 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2720                                         struct kwqe *wqes[], u32 num_wqes)
2721 {
2722         struct bnx2x *bp = netdev_priv(dev->netdev);
2723         int i, work, ret;
2724         u32 opcode;
2725         struct kwqe *kwqe;
2726
2727         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2728                 return -EAGAIN;         /* bnx2 is down */
2729
2730         if (!BNX2X_CHIP_IS_E2_PLUS(bp))
2731                 return -EINVAL;
2732
2733         for (i = 0; i < num_wqes; ) {
2734                 kwqe = wqes[i];
2735                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2736                 work = 1;
2737
2738                 switch (opcode) {
2739                 case FCOE_KWQE_OPCODE_INIT1:
2740                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2741                                                     num_wqes - i, &work);
2742                         break;
2743                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2744                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2745                                                     num_wqes - i, &work);
2746                         break;
2747                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2748                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2749                         break;
2750                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2751                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2752                         break;
2753                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2754                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2755                         break;
2756                 case FCOE_KWQE_OPCODE_DESTROY:
2757                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2758                         break;
2759                 case FCOE_KWQE_OPCODE_STAT:
2760                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2761                         break;
2762                 default:
2763                         ret = 0;
2764                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2765                                    opcode);
2766                         break;
2767                 }
2768                 if (ret < 0) {
2769                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2770                                    opcode);
2771
2772                         /* Possibly bnx2x parity error, send completion
2773                          * to ulp drivers with error code to speed up
2774                          * cleanup and reset recovery.
2775                          */
2776                         if (ret == -EIO || ret == -EAGAIN)
2777                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2778                 }
2779                 i += work;
2780         }
2781         return 0;
2782 }
2783
2784 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2785                                    u32 num_wqes)
2786 {
2787         int ret = -EINVAL;
2788         u32 layer_code;
2789
2790         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2791                 return -EAGAIN;         /* bnx2x is down */
2792
2793         if (!num_wqes)
2794                 return 0;
2795
2796         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2797         switch (layer_code) {
2798         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2799         case KWQE_FLAGS_LAYER_MASK_L4:
2800         case KWQE_FLAGS_LAYER_MASK_L2:
2801                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2802                 break;
2803
2804         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2805                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2806                 break;
2807         }
2808         return ret;
2809 }
2810
2811 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2812 {
2813         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2814                 return KCQE_FLAGS_LAYER_MASK_L4;
2815
2816         return opflag & KCQE_FLAGS_LAYER_MASK;
2817 }
2818
2819 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2820 {
2821         struct cnic_local *cp = dev->cnic_priv;
2822         int i, j, comp = 0;
2823
2824         i = 0;
2825         j = 1;
2826         while (num_cqes) {
2827                 struct cnic_ulp_ops *ulp_ops;
2828                 int ulp_type;
2829                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2830                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2831
2832                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2833                         comp++;
2834
2835                 while (j < num_cqes) {
2836                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2837
2838                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2839                                 break;
2840
2841                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2842                                 comp++;
2843                         j++;
2844                 }
2845
2846                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2847                         ulp_type = CNIC_ULP_RDMA;
2848                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2849                         ulp_type = CNIC_ULP_ISCSI;
2850                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2851                         ulp_type = CNIC_ULP_FCOE;
2852                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2853                         ulp_type = CNIC_ULP_L4;
2854                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2855                         goto end;
2856                 else {
2857                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2858                                    kcqe_op_flag);
2859                         goto end;
2860                 }
2861
2862                 rcu_read_lock();
2863                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2864                 if (likely(ulp_ops)) {
2865                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2866                                                   cp->completed_kcq + i, j);
2867                 }
2868                 rcu_read_unlock();
2869 end:
2870                 num_cqes -= j;
2871                 i += j;
2872                 j = 1;
2873         }
2874         if (unlikely(comp))
2875                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2876 }
2877
2878 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2879 {
2880         struct cnic_local *cp = dev->cnic_priv;
2881         u16 i, ri, hw_prod, last;
2882         struct kcqe *kcqe;
2883         int kcqe_cnt = 0, last_cnt = 0;
2884
2885         i = ri = last = info->sw_prod_idx;
2886         ri &= MAX_KCQ_IDX;
2887         hw_prod = *info->hw_prod_idx_ptr;
2888         hw_prod = info->hw_idx(hw_prod);
2889
2890         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2891                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2892                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2893                 i = info->next_idx(i);
2894                 ri = i & MAX_KCQ_IDX;
2895                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2896                         last_cnt = kcqe_cnt;
2897                         last = i;
2898                 }
2899         }
2900
2901         info->sw_prod_idx = last;
2902         return last_cnt;
2903 }
2904
2905 static int cnic_l2_completion(struct cnic_local *cp)
2906 {
2907         u16 hw_cons, sw_cons;
2908         struct cnic_uio_dev *udev = cp->udev;
2909         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2910                                         (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
2911         u32 cmd;
2912         int comp = 0;
2913
2914         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2915                 return 0;
2916
2917         hw_cons = *cp->rx_cons_ptr;
2918         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2919                 hw_cons++;
2920
2921         sw_cons = cp->rx_cons;
2922         while (sw_cons != hw_cons) {
2923                 u8 cqe_fp_flags;
2924
2925                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2926                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2927                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2928                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2929                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2930                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2931                             cmd == RAMROD_CMD_ID_ETH_HALT)
2932                                 comp++;
2933                 }
2934                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2935         }
2936         return comp;
2937 }
2938
2939 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2940 {
2941         u16 rx_cons, tx_cons;
2942         int comp = 0;
2943
2944         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2945                 return;
2946
2947         rx_cons = *cp->rx_cons_ptr;
2948         tx_cons = *cp->tx_cons_ptr;
2949         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2950                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2951                         comp = cnic_l2_completion(cp);
2952
2953                 cp->tx_cons = tx_cons;
2954                 cp->rx_cons = rx_cons;
2955
2956                 if (cp->udev)
2957                         uio_event_notify(&cp->udev->cnic_uinfo);
2958         }
2959         if (comp)
2960                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2961 }
2962
2963 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2964 {
2965         struct cnic_local *cp = dev->cnic_priv;
2966         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2967         int kcqe_cnt;
2968
2969         /* status block index must be read before reading other fields */
2970         rmb();
2971         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2972
2973         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2974
2975                 service_kcqes(dev, kcqe_cnt);
2976
2977                 /* Tell compiler that status_blk fields can change. */
2978                 barrier();
2979                 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2980                 /* status block index must be read first */
2981                 rmb();
2982                 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2983         }
2984
2985         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2986
2987         cnic_chk_pkt_rings(cp);
2988
2989         return status_idx;
2990 }
2991
2992 static int cnic_service_bnx2(void *data, void *status_blk)
2993 {
2994         struct cnic_dev *dev = data;
2995
2996         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2997                 struct status_block *sblk = status_blk;
2998
2999                 return sblk->status_idx;
3000         }
3001
3002         return cnic_service_bnx2_queues(dev);
3003 }
3004
3005 static void cnic_service_bnx2_msix(unsigned long data)
3006 {
3007         struct cnic_dev *dev = (struct cnic_dev *) data;
3008         struct cnic_local *cp = dev->cnic_priv;
3009
3010         cp->last_status_idx = cnic_service_bnx2_queues(dev);
3011
3012         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3013                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3014 }
3015
3016 static void cnic_doirq(struct cnic_dev *dev)
3017 {
3018         struct cnic_local *cp = dev->cnic_priv;
3019
3020         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3021                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
3022
3023                 prefetch(cp->status_blk.gen);
3024                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
3025
3026                 tasklet_schedule(&cp->cnic_irq_task);
3027         }
3028 }
3029
3030 static irqreturn_t cnic_irq(int irq, void *dev_instance)
3031 {
3032         struct cnic_dev *dev = dev_instance;
3033         struct cnic_local *cp = dev->cnic_priv;
3034
3035         if (cp->ack_int)
3036                 cp->ack_int(dev);
3037
3038         cnic_doirq(dev);
3039
3040         return IRQ_HANDLED;
3041 }
3042
3043 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
3044                                       u16 index, u8 op, u8 update)
3045 {
3046         struct bnx2x *bp = netdev_priv(dev->netdev);
3047         u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp) * 32 +
3048                        COMMAND_REG_INT_ACK);
3049         struct igu_ack_register igu_ack;
3050
3051         igu_ack.status_block_index = index;
3052         igu_ack.sb_id_and_flags =
3053                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
3054                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3055                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3056                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3057
3058         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3059 }
3060
3061 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3062                             u16 index, u8 op, u8 update)
3063 {
3064         struct igu_regular cmd_data;
3065         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3066
3067         cmd_data.sb_id_and_flags =
3068                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3069                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3070                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
3071                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3072
3073
3074         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3075 }
3076
3077 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3078 {
3079         struct cnic_local *cp = dev->cnic_priv;
3080
3081         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3082                            IGU_INT_DISABLE, 0);
3083 }
3084
3085 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3086 {
3087         struct cnic_local *cp = dev->cnic_priv;
3088
3089         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3090                         IGU_INT_DISABLE, 0);
3091 }
3092
3093 static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
3094 {
3095         struct cnic_local *cp = dev->cnic_priv;
3096
3097         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
3098                            IGU_INT_ENABLE, 1);
3099 }
3100
3101 static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
3102 {
3103         struct cnic_local *cp = dev->cnic_priv;
3104
3105         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
3106                         IGU_INT_ENABLE, 1);
3107 }
3108
3109 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3110 {
3111         u32 last_status = *info->status_idx_ptr;
3112         int kcqe_cnt;
3113
3114         /* status block index must be read before reading the KCQ */
3115         rmb();
3116         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3117
3118                 service_kcqes(dev, kcqe_cnt);
3119
3120                 /* Tell compiler that sblk fields can change. */
3121                 barrier();
3122
3123                 last_status = *info->status_idx_ptr;
3124                 /* status block index must be read before reading the KCQ */
3125                 rmb();
3126         }
3127         return last_status;
3128 }
3129
3130 static void cnic_service_bnx2x_bh(unsigned long data)
3131 {
3132         struct cnic_dev *dev = (struct cnic_dev *) data;
3133         struct cnic_local *cp = dev->cnic_priv;
3134         struct bnx2x *bp = netdev_priv(dev->netdev);
3135         u32 status_idx, new_status_idx;
3136
3137         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3138                 return;
3139
3140         while (1) {
3141                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3142
3143                 CNIC_WR16(dev, cp->kcq1.io_addr,
3144                           cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3145
3146                 if (!CNIC_SUPPORTS_FCOE(bp)) {
3147                         cp->arm_int(dev, status_idx);
3148                         break;
3149                 }
3150
3151                 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3152
3153                 if (new_status_idx != status_idx)
3154                         continue;
3155
3156                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3157                           MAX_KCQ_IDX);
3158
3159                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3160                                 status_idx, IGU_INT_ENABLE, 1);
3161
3162                 break;
3163         }
3164 }
3165
3166 static int cnic_service_bnx2x(void *data, void *status_blk)
3167 {
3168         struct cnic_dev *dev = data;
3169         struct cnic_local *cp = dev->cnic_priv;
3170
3171         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3172                 cnic_doirq(dev);
3173
3174         cnic_chk_pkt_rings(cp);
3175
3176         return 0;
3177 }
3178
3179 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3180 {
3181         struct cnic_ulp_ops *ulp_ops;
3182
3183         if (if_type == CNIC_ULP_ISCSI)
3184                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3185
3186         mutex_lock(&cnic_lock);
3187         ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3188                                             lockdep_is_held(&cnic_lock));
3189         if (!ulp_ops) {
3190                 mutex_unlock(&cnic_lock);
3191                 return;
3192         }
3193         set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3194         mutex_unlock(&cnic_lock);
3195
3196         if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3197                 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3198
3199         clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3200 }
3201
3202 static void cnic_ulp_stop(struct cnic_dev *dev)
3203 {
3204         struct cnic_local *cp = dev->cnic_priv;
3205         int if_type;
3206
3207         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3208                 cnic_ulp_stop_one(cp, if_type);
3209 }
3210
3211 static void cnic_ulp_start(struct cnic_dev *dev)
3212 {
3213         struct cnic_local *cp = dev->cnic_priv;
3214         int if_type;
3215
3216         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3217                 struct cnic_ulp_ops *ulp_ops;
3218
3219                 mutex_lock(&cnic_lock);
3220                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3221                                                     lockdep_is_held(&cnic_lock));
3222                 if (!ulp_ops || !ulp_ops->cnic_start) {
3223                         mutex_unlock(&cnic_lock);
3224                         continue;
3225                 }
3226                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3227                 mutex_unlock(&cnic_lock);
3228
3229                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3230                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3231
3232                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3233         }
3234 }
3235
3236 static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3237 {
3238         struct cnic_local *cp = dev->cnic_priv;
3239         struct cnic_ulp_ops *ulp_ops;
3240         int rc;
3241
3242         mutex_lock(&cnic_lock);
3243         ulp_ops = rcu_dereference_protected(cp->ulp_ops[ulp_type],
3244                                             lockdep_is_held(&cnic_lock));
3245         if (ulp_ops && ulp_ops->cnic_get_stats)
3246                 rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3247         else
3248                 rc = -ENODEV;
3249         mutex_unlock(&cnic_lock);
3250         return rc;
3251 }
3252
3253 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3254 {
3255         struct cnic_dev *dev = data;
3256         int ulp_type = CNIC_ULP_ISCSI;
3257
3258         switch (info->cmd) {
3259         case CNIC_CTL_STOP_CMD:
3260                 cnic_hold(dev);
3261
3262                 cnic_ulp_stop(dev);
3263                 cnic_stop_hw(dev);
3264
3265                 cnic_put(dev);
3266                 break;
3267         case CNIC_CTL_START_CMD:
3268                 cnic_hold(dev);
3269
3270                 if (!cnic_start_hw(dev))
3271                         cnic_ulp_start(dev);
3272
3273                 cnic_put(dev);
3274                 break;
3275         case CNIC_CTL_STOP_ISCSI_CMD: {
3276                 struct cnic_local *cp = dev->cnic_priv;
3277                 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3278                 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3279                 break;
3280         }
3281         case CNIC_CTL_COMPLETION_CMD: {
3282                 struct cnic_ctl_completion *comp = &info->data.comp;
3283                 u32 cid = BNX2X_SW_CID(comp->cid);
3284                 u32 l5_cid;
3285                 struct cnic_local *cp = dev->cnic_priv;
3286
3287                 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
3288                         break;
3289
3290                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3291                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3292
3293                         if (unlikely(comp->error)) {
3294                                 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3295                                 netdev_err(dev->netdev,
3296                                            "CID %x CFC delete comp error %x\n",
3297                                            cid, comp->error);
3298                         }
3299
3300                         ctx->wait_cond = 1;
3301                         wake_up(&ctx->waitq);
3302                 }
3303                 break;
3304         }
3305         case CNIC_CTL_FCOE_STATS_GET_CMD:
3306                 ulp_type = CNIC_ULP_FCOE;
3307                 /* fall through */
3308         case CNIC_CTL_ISCSI_STATS_GET_CMD:
3309                 cnic_hold(dev);
3310                 cnic_copy_ulp_stats(dev, ulp_type);
3311                 cnic_put(dev);
3312                 break;
3313
3314         default:
3315                 return -EINVAL;
3316         }
3317         return 0;
3318 }
3319
3320 static void cnic_ulp_init(struct cnic_dev *dev)
3321 {
3322         int i;
3323         struct cnic_local *cp = dev->cnic_priv;
3324
3325         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3326                 struct cnic_ulp_ops *ulp_ops;
3327
3328                 mutex_lock(&cnic_lock);
3329                 ulp_ops = cnic_ulp_tbl_prot(i);
3330                 if (!ulp_ops || !ulp_ops->cnic_init) {
3331                         mutex_unlock(&cnic_lock);
3332                         continue;
3333                 }
3334                 ulp_get(ulp_ops);
3335                 mutex_unlock(&cnic_lock);
3336
3337                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3338                         ulp_ops->cnic_init(dev);
3339
3340                 ulp_put(ulp_ops);
3341         }
3342 }
3343
3344 static void cnic_ulp_exit(struct cnic_dev *dev)
3345 {
3346         int i;
3347         struct cnic_local *cp = dev->cnic_priv;
3348
3349         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3350                 struct cnic_ulp_ops *ulp_ops;
3351
3352                 mutex_lock(&cnic_lock);
3353                 ulp_ops = cnic_ulp_tbl_prot(i);
3354                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3355                         mutex_unlock(&cnic_lock);
3356                         continue;
3357                 }
3358                 ulp_get(ulp_ops);
3359                 mutex_unlock(&cnic_lock);
3360
3361                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3362                         ulp_ops->cnic_exit(dev);
3363
3364                 ulp_put(ulp_ops);
3365         }
3366 }
3367
3368 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3369 {
3370         struct cnic_dev *dev = csk->dev;
3371         struct l4_kwq_offload_pg *l4kwqe;
3372         struct kwqe *wqes[1];
3373
3374         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3375         memset(l4kwqe, 0, sizeof(*l4kwqe));
3376         wqes[0] = (struct kwqe *) l4kwqe;
3377
3378         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3379         l4kwqe->flags =
3380                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3381         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3382
3383         l4kwqe->da0 = csk->ha[0];
3384         l4kwqe->da1 = csk->ha[1];
3385         l4kwqe->da2 = csk->ha[2];
3386         l4kwqe->da3 = csk->ha[3];
3387         l4kwqe->da4 = csk->ha[4];
3388         l4kwqe->da5 = csk->ha[5];
3389
3390         l4kwqe->sa0 = dev->mac_addr[0];
3391         l4kwqe->sa1 = dev->mac_addr[1];
3392         l4kwqe->sa2 = dev->mac_addr[2];
3393         l4kwqe->sa3 = dev->mac_addr[3];
3394         l4kwqe->sa4 = dev->mac_addr[4];
3395         l4kwqe->sa5 = dev->mac_addr[5];
3396
3397         l4kwqe->etype = ETH_P_IP;
3398         l4kwqe->ipid_start = DEF_IPID_START;
3399         l4kwqe->host_opaque = csk->l5_cid;
3400
3401         if (csk->vlan_id) {
3402                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3403                 l4kwqe->vlan_tag = csk->vlan_id;
3404                 l4kwqe->l2hdr_nbytes += 4;
3405         }
3406
3407         return dev->submit_kwqes(dev, wqes, 1);
3408 }
3409
3410 static int cnic_cm_update_pg(struct cnic_sock *csk)
3411 {
3412         struct cnic_dev *dev = csk->dev;
3413         struct l4_kwq_update_pg *l4kwqe;
3414         struct kwqe *wqes[1];
3415
3416         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3417         memset(l4kwqe, 0, sizeof(*l4kwqe));
3418         wqes[0] = (struct kwqe *) l4kwqe;
3419
3420         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3421         l4kwqe->flags =
3422                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3423         l4kwqe->pg_cid = csk->pg_cid;
3424
3425         l4kwqe->da0 = csk->ha[0];
3426         l4kwqe->da1 = csk->ha[1];
3427         l4kwqe->da2 = csk->ha[2];
3428         l4kwqe->da3 = csk->ha[3];
3429         l4kwqe->da4 = csk->ha[4];
3430         l4kwqe->da5 = csk->ha[5];
3431
3432         l4kwqe->pg_host_opaque = csk->l5_cid;
3433         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3434
3435         return dev->submit_kwqes(dev, wqes, 1);
3436 }
3437
3438 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3439 {
3440         struct cnic_dev *dev = csk->dev;
3441         struct l4_kwq_upload *l4kwqe;
3442         struct kwqe *wqes[1];
3443
3444         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3445         memset(l4kwqe, 0, sizeof(*l4kwqe));
3446         wqes[0] = (struct kwqe *) l4kwqe;
3447
3448         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3449         l4kwqe->flags =
3450                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3451         l4kwqe->cid = csk->pg_cid;
3452
3453         return dev->submit_kwqes(dev, wqes, 1);
3454 }
3455
3456 static int cnic_cm_conn_req(struct cnic_sock *csk)
3457 {
3458         struct cnic_dev *dev = csk->dev;
3459         struct l4_kwq_connect_req1 *l4kwqe1;
3460         struct l4_kwq_connect_req2 *l4kwqe2;
3461         struct l4_kwq_connect_req3 *l4kwqe3;
3462         struct kwqe *wqes[3];
3463         u8 tcp_flags = 0;
3464         int num_wqes = 2;
3465
3466         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3467         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3468         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3469         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3470         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3471         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3472
3473         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3474         l4kwqe3->flags =
3475                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3476         l4kwqe3->ka_timeout = csk->ka_timeout;
3477         l4kwqe3->ka_interval = csk->ka_interval;
3478         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3479         l4kwqe3->tos = csk->tos;
3480         l4kwqe3->ttl = csk->ttl;
3481         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3482         l4kwqe3->pmtu = csk->mtu;
3483         l4kwqe3->rcv_buf = csk->rcv_buf;
3484         l4kwqe3->snd_buf = csk->snd_buf;
3485         l4kwqe3->seed = csk->seed;
3486
3487         wqes[0] = (struct kwqe *) l4kwqe1;
3488         if (test_bit(SK_F_IPV6, &csk->flags)) {
3489                 wqes[1] = (struct kwqe *) l4kwqe2;
3490                 wqes[2] = (struct kwqe *) l4kwqe3;
3491                 num_wqes = 3;
3492
3493                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3494                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3495                 l4kwqe2->flags =
3496                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3497                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3498                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3499                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3500                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3501                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3502                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3503                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3504                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3505                                sizeof(struct tcphdr);
3506         } else {
3507                 wqes[1] = (struct kwqe *) l4kwqe3;
3508                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3509                                sizeof(struct tcphdr);
3510         }
3511
3512         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3513         l4kwqe1->flags =
3514                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3515                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3516         l4kwqe1->cid = csk->cid;
3517         l4kwqe1->pg_cid = csk->pg_cid;
3518         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3519         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3520         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3521         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3522         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3523                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3524         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3525                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3526         if (csk->tcp_flags & SK_TCP_NAGLE)
3527                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3528         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3529                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3530         if (csk->tcp_flags & SK_TCP_SACK)
3531                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3532         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3533                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3534
3535         l4kwqe1->tcp_flags = tcp_flags;
3536
3537         return dev->submit_kwqes(dev, wqes, num_wqes);
3538 }
3539
3540 static int cnic_cm_close_req(struct cnic_sock *csk)
3541 {
3542         struct cnic_dev *dev = csk->dev;
3543         struct l4_kwq_close_req *l4kwqe;
3544         struct kwqe *wqes[1];
3545
3546         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3547         memset(l4kwqe, 0, sizeof(*l4kwqe));
3548         wqes[0] = (struct kwqe *) l4kwqe;
3549
3550         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3551         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3552         l4kwqe->cid = csk->cid;
3553
3554         return dev->submit_kwqes(dev, wqes, 1);
3555 }
3556
3557 static int cnic_cm_abort_req(struct cnic_sock *csk)
3558 {
3559         struct cnic_dev *dev = csk->dev;
3560         struct l4_kwq_reset_req *l4kwqe;
3561         struct kwqe *wqes[1];
3562
3563         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3564         memset(l4kwqe, 0, sizeof(*l4kwqe));
3565         wqes[0] = (struct kwqe *) l4kwqe;
3566
3567         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3568         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3569         l4kwqe->cid = csk->cid;
3570
3571         return dev->submit_kwqes(dev, wqes, 1);
3572 }
3573
3574 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3575                           u32 l5_cid, struct cnic_sock **csk, void *context)
3576 {
3577         struct cnic_local *cp = dev->cnic_priv;
3578         struct cnic_sock *csk1;
3579
3580         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3581                 return -EINVAL;
3582
3583         if (cp->ctx_tbl) {
3584                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3585
3586                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3587                         return -EAGAIN;
3588         }
3589
3590         csk1 = &cp->csk_tbl[l5_cid];
3591         if (atomic_read(&csk1->ref_count))
3592                 return -EAGAIN;
3593
3594         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3595                 return -EBUSY;
3596
3597         csk1->dev = dev;
3598         csk1->cid = cid;
3599         csk1->l5_cid = l5_cid;
3600         csk1->ulp_type = ulp_type;
3601         csk1->context = context;
3602
3603         csk1->ka_timeout = DEF_KA_TIMEOUT;
3604         csk1->ka_interval = DEF_KA_INTERVAL;
3605         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3606         csk1->tos = DEF_TOS;
3607         csk1->ttl = DEF_TTL;
3608         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3609         csk1->rcv_buf = DEF_RCV_BUF;
3610         csk1->snd_buf = DEF_SND_BUF;
3611         csk1->seed = DEF_SEED;
3612         csk1->tcp_flags = 0;
3613
3614         *csk = csk1;
3615         return 0;
3616 }
3617
3618 static void cnic_cm_cleanup(struct cnic_sock *csk)
3619 {
3620         if (csk->src_port) {
3621                 struct cnic_dev *dev = csk->dev;
3622                 struct cnic_local *cp = dev->cnic_priv;
3623
3624                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3625                 csk->src_port = 0;
3626         }
3627 }
3628
3629 static void cnic_close_conn(struct cnic_sock *csk)
3630 {
3631         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3632                 cnic_cm_upload_pg(csk);
3633                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3634         }
3635         cnic_cm_cleanup(csk);
3636 }
3637
3638 static int cnic_cm_destroy(struct cnic_sock *csk)
3639 {
3640         if (!cnic_in_use(csk))
3641                 return -EINVAL;
3642
3643         csk_hold(csk);
3644         clear_bit(SK_F_INUSE, &csk->flags);
3645         smp_mb__after_atomic();
3646         while (atomic_read(&csk->ref_count) != 1)
3647                 msleep(1);
3648         cnic_cm_cleanup(csk);
3649
3650         csk->flags = 0;
3651         csk_put(csk);
3652         return 0;
3653 }
3654
3655 static inline u16 cnic_get_vlan(struct net_device *dev,
3656                                 struct net_device **vlan_dev)
3657 {
3658         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3659                 *vlan_dev = vlan_dev_real_dev(dev);
3660                 return vlan_dev_vlan_id(dev);
3661         }
3662         *vlan_dev = dev;
3663         return 0;
3664 }
3665
3666 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3667                              struct dst_entry **dst)
3668 {
3669 #if defined(CONFIG_INET)
3670         struct rtable *rt;
3671
3672         rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3673         if (!IS_ERR(rt)) {
3674                 *dst = &rt->dst;
3675                 return 0;
3676         }
3677         return PTR_ERR(rt);
3678 #else
3679         return -ENETUNREACH;
3680 #endif
3681 }
3682
3683 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3684                              struct dst_entry **dst)
3685 {
3686 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3687         struct flowi6 fl6;
3688
3689         memset(&fl6, 0, sizeof(fl6));
3690         fl6.daddr = dst_addr->sin6_addr;
3691         if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3692                 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3693
3694         *dst = ip6_route_output(&init_net, NULL, &fl6);
3695         if ((*dst)->error) {
3696                 dst_release(*dst);
3697                 *dst = NULL;
3698                 return -ENETUNREACH;
3699         } else
3700                 return 0;
3701 #endif
3702
3703         return -ENETUNREACH;
3704 }
3705
3706 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3707                                            int ulp_type)
3708 {
3709         struct cnic_dev *dev = NULL;
3710         struct dst_entry *dst;
3711         struct net_device *netdev = NULL;
3712         int err = -ENETUNREACH;
3713
3714         if (dst_addr->sin_family == AF_INET)
3715                 err = cnic_get_v4_route(dst_addr, &dst);
3716         else if (dst_addr->sin_family == AF_INET6) {
3717                 struct sockaddr_in6 *dst_addr6 =
3718                         (struct sockaddr_in6 *) dst_addr;
3719
3720                 err = cnic_get_v6_route(dst_addr6, &dst);
3721         } else
3722                 return NULL;
3723
3724         if (err)
3725                 return NULL;
3726
3727         if (!dst->dev)
3728                 goto done;
3729
3730         cnic_get_vlan(dst->dev, &netdev);
3731
3732         dev = cnic_from_netdev(netdev);
3733
3734 done:
3735         dst_release(dst);
3736         if (dev)
3737                 cnic_put(dev);
3738         return dev;
3739 }
3740
3741 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3742 {
3743         struct cnic_dev *dev = csk->dev;
3744         struct cnic_local *cp = dev->cnic_priv;
3745
3746         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3747 }
3748
3749 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3750 {
3751         struct cnic_dev *dev = csk->dev;
3752         struct cnic_local *cp = dev->cnic_priv;
3753         int is_v6, rc = 0;
3754         struct dst_entry *dst = NULL;
3755         struct net_device *realdev;
3756         __be16 local_port;
3757         u32 port_id;
3758
3759         if (saddr->local.v6.sin6_family == AF_INET6 &&
3760             saddr->remote.v6.sin6_family == AF_INET6)
3761                 is_v6 = 1;
3762         else if (saddr->local.v4.sin_family == AF_INET &&
3763                  saddr->remote.v4.sin_family == AF_INET)
3764                 is_v6 = 0;
3765         else
3766                 return -EINVAL;
3767
3768         clear_bit(SK_F_IPV6, &csk->flags);
3769
3770         if (is_v6) {
3771                 set_bit(SK_F_IPV6, &csk->flags);
3772                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3773
3774                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3775                        sizeof(struct in6_addr));
3776                 csk->dst_port = saddr->remote.v6.sin6_port;
3777                 local_port = saddr->local.v6.sin6_port;
3778
3779         } else {
3780                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3781
3782                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3783                 csk->dst_port = saddr->remote.v4.sin_port;
3784                 local_port = saddr->local.v4.sin_port;
3785         }
3786
3787         csk->vlan_id = 0;
3788         csk->mtu = dev->netdev->mtu;
3789         if (dst && dst->dev) {
3790                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3791                 if (realdev == dev->netdev) {
3792                         csk->vlan_id = vlan;
3793                         csk->mtu = dst_mtu(dst);
3794                 }
3795         }
3796
3797         port_id = be16_to_cpu(local_port);
3798         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3799             port_id < CNIC_LOCAL_PORT_MAX) {
3800                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3801                         port_id = 0;
3802         } else
3803                 port_id = 0;
3804
3805         if (!port_id) {
3806                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3807                 if (port_id == -1) {
3808                         rc = -ENOMEM;
3809                         goto err_out;
3810                 }
3811                 local_port = cpu_to_be16(port_id);
3812         }
3813         csk->src_port = local_port;
3814
3815 err_out:
3816         dst_release(dst);
3817         return rc;
3818 }
3819
3820 static void cnic_init_csk_state(struct cnic_sock *csk)
3821 {
3822         csk->state = 0;
3823         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3824         clear_bit(SK_F_CLOSING, &csk->flags);
3825 }
3826
3827 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3828 {
3829         struct cnic_local *cp = csk->dev->cnic_priv;
3830         int err = 0;
3831
3832         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3833                 return -EOPNOTSUPP;
3834
3835         if (!cnic_in_use(csk))
3836                 return -EINVAL;
3837
3838         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3839                 return -EINVAL;
3840
3841         cnic_init_csk_state(csk);
3842
3843         err = cnic_get_route(csk, saddr);
3844         if (err)
3845                 goto err_out;
3846
3847         err = cnic_resolve_addr(csk, saddr);
3848         if (!err)
3849                 return 0;
3850
3851 err_out:
3852         clear_bit(SK_F_CONNECT_START, &csk->flags);
3853         return err;
3854 }
3855
3856 static int cnic_cm_abort(struct cnic_sock *csk)
3857 {
3858         struct cnic_local *cp = csk->dev->cnic_priv;
3859         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3860
3861         if (!cnic_in_use(csk))
3862                 return -EINVAL;
3863
3864         if (cnic_abort_prep(csk))
3865                 return cnic_cm_abort_req(csk);
3866
3867         /* Getting here means that we haven't started connect, or
3868          * connect was not successful, or it has been reset by the target.
3869          */
3870
3871         cp->close_conn(csk, opcode);
3872         if (csk->state != opcode) {
3873                 /* Wait for remote reset sequence to complete */
3874                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3875                         msleep(1);
3876
3877                 return -EALREADY;
3878         }
3879
3880         return 0;
3881 }
3882
3883 static int cnic_cm_close(struct cnic_sock *csk)
3884 {
3885         if (!cnic_in_use(csk))
3886                 return -EINVAL;
3887
3888         if (cnic_close_prep(csk)) {
3889                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3890                 return cnic_cm_close_req(csk);
3891         } else {
3892                 /* Wait for remote reset sequence to complete */
3893                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3894                         msleep(1);
3895
3896                 return -EALREADY;
3897         }
3898         return 0;
3899 }
3900
3901 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3902                            u8 opcode)
3903 {
3904         struct cnic_ulp_ops *ulp_ops;
3905         int ulp_type = csk->ulp_type;
3906
3907         rcu_read_lock();
3908         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3909         if (ulp_ops) {
3910                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3911                         ulp_ops->cm_connect_complete(csk);
3912                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3913                         ulp_ops->cm_close_complete(csk);
3914                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3915                         ulp_ops->cm_remote_abort(csk);
3916                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3917                         ulp_ops->cm_abort_complete(csk);
3918                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3919                         ulp_ops->cm_remote_close(csk);
3920         }
3921         rcu_read_unlock();
3922 }
3923
3924 static int cnic_cm_set_pg(struct cnic_sock *csk)
3925 {
3926         if (cnic_offld_prep(csk)) {
3927                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3928                         cnic_cm_update_pg(csk);
3929                 else
3930                         cnic_cm_offload_pg(csk);
3931         }
3932         return 0;
3933 }
3934
3935 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3936 {
3937         struct cnic_local *cp = dev->cnic_priv;
3938         u32 l5_cid = kcqe->pg_host_opaque;
3939         u8 opcode = kcqe->op_code;
3940         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3941
3942         csk_hold(csk);
3943         if (!cnic_in_use(csk))
3944                 goto done;
3945
3946         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3947                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3948                 goto done;
3949         }
3950         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3951         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3952                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3953                 cnic_cm_upcall(cp, csk,
3954                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3955                 goto done;
3956         }
3957
3958         csk->pg_cid = kcqe->pg_cid;
3959         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3960         cnic_cm_conn_req(csk);
3961
3962 done:
3963         csk_put(csk);
3964 }
3965
3966 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3967 {
3968         struct cnic_local *cp = dev->cnic_priv;
3969         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3970         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3971         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3972
3973         ctx->timestamp = jiffies;
3974         ctx->wait_cond = 1;
3975         wake_up(&ctx->waitq);
3976 }
3977
3978 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3979 {
3980         struct cnic_local *cp = dev->cnic_priv;
3981         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3982         u8 opcode = l4kcqe->op_code;
3983         u32 l5_cid;
3984         struct cnic_sock *csk;
3985
3986         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3987                 cnic_process_fcoe_term_conn(dev, kcqe);
3988                 return;
3989         }
3990         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3991             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3992                 cnic_cm_process_offld_pg(dev, l4kcqe);
3993                 return;
3994         }
3995
3996         l5_cid = l4kcqe->conn_id;
3997         if (opcode & 0x80)
3998                 l5_cid = l4kcqe->cid;
3999         if (l5_cid >= MAX_CM_SK_TBL_SZ)
4000                 return;
4001
4002         csk = &cp->csk_tbl[l5_cid];
4003         csk_hold(csk);
4004
4005         if (!cnic_in_use(csk)) {
4006                 csk_put(csk);
4007                 return;
4008         }
4009
4010         switch (opcode) {
4011         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
4012                 if (l4kcqe->status != 0) {
4013                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4014                         cnic_cm_upcall(cp, csk,
4015                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
4016                 }
4017                 break;
4018         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
4019                 if (l4kcqe->status == 0)
4020                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
4021                 else if (l4kcqe->status ==
4022                          L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4023                         set_bit(SK_F_HW_ERR, &csk->flags);
4024
4025                 smp_mb__before_atomic();
4026                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4027                 cnic_cm_upcall(cp, csk, opcode);
4028                 break;
4029
4030         case L5CM_RAMROD_CMD_ID_CLOSE: {
4031                 struct iscsi_kcqe *l5kcqe = (struct iscsi_kcqe *) kcqe;
4032
4033                 if (l4kcqe->status != 0 || l5kcqe->completion_status != 0) {
4034                         netdev_warn(dev->netdev, "RAMROD CLOSE compl with status 0x%x completion status 0x%x\n",
4035                                     l4kcqe->status, l5kcqe->completion_status);
4036                         opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
4037                         /* Fall through */
4038                 } else {
4039                         break;
4040                 }
4041         }
4042         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4043         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4044         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4045         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4046         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4047                 if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4048                         set_bit(SK_F_HW_ERR, &csk->flags);
4049
4050                 cp->close_conn(csk, opcode);
4051                 break;
4052
4053         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
4054                 /* after we already sent CLOSE_REQ */
4055                 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
4056                     !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
4057                     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
4058                         cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
4059                 else
4060                         cnic_cm_upcall(cp, csk, opcode);
4061                 break;
4062         }
4063         csk_put(csk);
4064 }
4065
4066 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
4067 {
4068         struct cnic_dev *dev = data;
4069         int i;
4070
4071         for (i = 0; i < num; i++)
4072                 cnic_cm_process_kcqe(dev, kcqe[i]);
4073 }
4074
4075 static struct cnic_ulp_ops cm_ulp_ops = {
4076         .indicate_kcqes         = cnic_cm_indicate_kcqe,
4077 };
4078
4079 static void cnic_cm_free_mem(struct cnic_dev *dev)
4080 {
4081         struct cnic_local *cp = dev->cnic_priv;
4082
4083         kfree(cp->csk_tbl);
4084         cp->csk_tbl = NULL;
4085         cnic_free_id_tbl(&cp->csk_port_tbl);
4086 }
4087
4088 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
4089 {
4090         struct cnic_local *cp = dev->cnic_priv;
4091         u32 port_id;
4092
4093         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
4094                               GFP_KERNEL);
4095         if (!cp->csk_tbl)
4096                 return -ENOMEM;
4097
4098         port_id = prandom_u32();
4099         port_id %= CNIC_LOCAL_PORT_RANGE;
4100         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4101                              CNIC_LOCAL_PORT_MIN, port_id)) {
4102                 cnic_cm_free_mem(dev);
4103                 return -ENOMEM;
4104         }
4105         return 0;
4106 }
4107
4108 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
4109 {
4110         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
4111                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
4112                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
4113                 csk->state = opcode;
4114         }
4115
4116         /* 1. If event opcode matches the expected event in csk->state
4117          * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
4118          *    event
4119          * 3. If the expected event is 0, meaning the connection was never
4120          *    never established, we accept the opcode from cm_abort.
4121          */
4122         if (opcode == csk->state || csk->state == 0 ||
4123             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
4124             csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4125                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
4126                         if (csk->state == 0)
4127                                 csk->state = opcode;
4128                         return 1;
4129                 }
4130         }
4131         return 0;
4132 }
4133
4134 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
4135 {
4136         struct cnic_dev *dev = csk->dev;
4137         struct cnic_local *cp = dev->cnic_priv;
4138
4139         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
4140                 cnic_cm_upcall(cp, csk, opcode);
4141                 return;
4142         }
4143
4144         clear_bit(SK_F_CONNECT_START, &csk->flags);
4145         cnic_close_conn(csk);
4146         csk->state = opcode;
4147         cnic_cm_upcall(cp, csk, opcode);
4148 }
4149
4150 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
4151 {
4152 }
4153
4154 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
4155 {
4156         u32 seed;
4157
4158         seed = prandom_u32();
4159         cnic_ctx_wr(dev, 45, 0, seed);
4160         return 0;
4161 }
4162
4163 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
4164 {
4165         struct cnic_dev *dev = csk->dev;
4166         struct cnic_local *cp = dev->cnic_priv;
4167         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
4168         union l5cm_specific_data l5_data;
4169         u32 cmd = 0;
4170         int close_complete = 0;
4171
4172         switch (opcode) {
4173         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4174         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4175         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4176                 if (cnic_ready_to_close(csk, opcode)) {
4177                         if (test_bit(SK_F_HW_ERR, &csk->flags))
4178                                 close_complete = 1;
4179                         else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4180                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
4181                         else
4182                                 close_complete = 1;
4183                 }
4184                 break;
4185         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4186                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
4187                 break;
4188         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4189                 close_complete = 1;
4190                 break;
4191         }
4192         if (cmd) {
4193                 memset(&l5_data, 0, sizeof(l5_data));
4194
4195                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
4196                                     &l5_data);
4197         } else if (close_complete) {
4198                 ctx->timestamp = jiffies;
4199                 cnic_close_conn(csk);
4200                 cnic_cm_upcall(cp, csk, csk->state);
4201         }
4202 }
4203
4204 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
4205 {
4206         struct cnic_local *cp = dev->cnic_priv;
4207
4208         if (!cp->ctx_tbl)
4209                 return;
4210
4211         if (!netif_running(dev->netdev))
4212                 return;
4213
4214         cnic_bnx2x_delete_wait(dev, 0);
4215
4216         cancel_delayed_work(&cp->delete_task);
4217         flush_workqueue(cnic_wq);
4218
4219         if (atomic_read(&cp->iscsi_conn) != 0)
4220                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
4221                             atomic_read(&cp->iscsi_conn));
4222 }
4223
4224 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
4225 {
4226         struct bnx2x *bp = netdev_priv(dev->netdev);
4227         u32 pfid = bp->pfid;
4228         u32 port = BP_PORT(bp);
4229
4230         cnic_init_bnx2x_mac(dev);
4231         cnic_bnx2x_set_tcp_options(dev, 0, 1);
4232
4233         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4234                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4235
4236         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4237                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4238         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4239                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4240                 DEF_MAX_DA_COUNT);
4241
4242         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4243                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4244         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4245                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4246         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4247                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4248         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4249                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4250
4251         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4252                 DEF_MAX_CWND);
4253         return 0;
4254 }
4255
4256 static void cnic_delete_task(struct work_struct *work)
4257 {
4258         struct cnic_local *cp;
4259         struct cnic_dev *dev;
4260         u32 i;
4261         int need_resched = 0;
4262
4263         cp = container_of(work, struct cnic_local, delete_task.work);
4264         dev = cp->dev;
4265
4266         if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4267                 struct drv_ctl_info info;
4268
4269                 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4270
4271                 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4272                 cp->ethdev->drv_ctl(dev->netdev, &info);
4273         }
4274
4275         for (i = 0; i < cp->max_cid_space; i++) {
4276                 struct cnic_context *ctx = &cp->ctx_tbl[i];
4277                 int err;
4278
4279                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4280                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4281                         continue;
4282
4283                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4284                         need_resched = 1;
4285                         continue;
4286                 }
4287
4288                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4289                         continue;
4290
4291                 err = cnic_bnx2x_destroy_ramrod(dev, i);
4292
4293                 cnic_free_bnx2x_conn_resc(dev, i);
4294                 if (!err) {
4295                         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4296                                 atomic_dec(&cp->iscsi_conn);
4297
4298                         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4299                 }
4300         }
4301
4302         if (need_resched)
4303                 queue_delayed_work(cnic_wq, &cp->delete_task,
4304                                    msecs_to_jiffies(10));
4305
4306 }
4307
4308 static int cnic_cm_open(struct cnic_dev *dev)
4309 {
4310         struct cnic_local *cp = dev->cnic_priv;
4311         int err;
4312
4313         err = cnic_cm_alloc_mem(dev);
4314         if (err)
4315                 return err;
4316
4317         err = cp->start_cm(dev);
4318
4319         if (err)
4320                 goto err_out;
4321
4322         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4323
4324         dev->cm_create = cnic_cm_create;
4325         dev->cm_destroy = cnic_cm_destroy;
4326         dev->cm_connect = cnic_cm_connect;
4327         dev->cm_abort = cnic_cm_abort;
4328         dev->cm_close = cnic_cm_close;
4329         dev->cm_select_dev = cnic_cm_select_dev;
4330
4331         cp->ulp_handle[CNIC_ULP_L4] = dev;
4332         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4333         return 0;
4334
4335 err_out:
4336         cnic_cm_free_mem(dev);
4337         return err;
4338 }
4339
4340 static int cnic_cm_shutdown(struct cnic_dev *dev)
4341 {
4342         struct cnic_local *cp = dev->cnic_priv;
4343         int i;
4344
4345         if (!cp->csk_tbl)
4346                 return 0;
4347
4348         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4349                 struct cnic_sock *csk = &cp->csk_tbl[i];
4350
4351                 clear_bit(SK_F_INUSE, &csk->flags);
4352                 cnic_cm_cleanup(csk);
4353         }
4354         cnic_cm_free_mem(dev);
4355
4356         return 0;
4357 }
4358
4359 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4360 {
4361         u32 cid_addr;
4362         int i;
4363
4364         cid_addr = GET_CID_ADDR(cid);
4365
4366         for (i = 0; i < CTX_SIZE; i += 4)
4367                 cnic_ctx_wr(dev, cid_addr, i, 0);
4368 }
4369
4370 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4371 {
4372         struct cnic_local *cp = dev->cnic_priv;
4373         int ret = 0, i;
4374         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4375
4376         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4377                 return 0;
4378
4379         for (i = 0; i < cp->ctx_blks; i++) {
4380                 int j;
4381                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4382                 u32 val;
4383
4384                 memset(cp->ctx_arr[i].ctx, 0, CNIC_PAGE_SIZE);
4385
4386                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4387                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4388                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4389                         (u64) cp->ctx_arr[i].mapping >> 32);
4390                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4391                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4392                 for (j = 0; j < 10; j++) {
4393
4394                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4395                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4396                                 break;
4397                         udelay(5);
4398                 }
4399                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4400                         ret = -EBUSY;
4401                         break;
4402                 }
4403         }
4404         return ret;
4405 }
4406
4407 static void cnic_free_irq(struct cnic_dev *dev)
4408 {
4409         struct cnic_local *cp = dev->cnic_priv;
4410         struct cnic_eth_dev *ethdev = cp->ethdev;
4411
4412         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4413                 cp->disable_int_sync(dev);
4414                 tasklet_kill(&cp->cnic_irq_task);
4415                 free_irq(ethdev->irq_arr[0].vector, dev);
4416         }
4417 }
4418
4419 static int cnic_request_irq(struct cnic_dev *dev)
4420 {
4421         struct cnic_local *cp = dev->cnic_priv;
4422         struct cnic_eth_dev *ethdev = cp->ethdev;
4423         int err;
4424
4425         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4426         if (err)
4427                 tasklet_disable(&cp->cnic_irq_task);
4428
4429         return err;
4430 }
4431
4432 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4433 {
4434         struct cnic_local *cp = dev->cnic_priv;
4435         struct cnic_eth_dev *ethdev = cp->ethdev;
4436
4437         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4438                 int err, i = 0;
4439                 int sblk_num = cp->status_blk_num;
4440                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4441                            BNX2_HC_SB_CONFIG_1;
4442
4443                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4444
4445                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4446                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4447                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4448
4449                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4450                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4451                              (unsigned long) dev);
4452                 err = cnic_request_irq(dev);
4453                 if (err)
4454                         return err;
4455
4456                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4457                        i < 10) {
4458                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4459                                 1 << (11 + sblk_num));
4460                         udelay(10);
4461                         i++;
4462                         barrier();
4463                 }
4464                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4465                         cnic_free_irq(dev);
4466                         goto failed;
4467                 }
4468
4469         } else {
4470                 struct status_block *sblk = cp->status_blk.gen;
4471                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4472                 int i = 0;
4473
4474                 while (sblk->status_completion_producer_index && i < 10) {
4475                         CNIC_WR(dev, BNX2_HC_COMMAND,
4476                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4477                         udelay(10);
4478                         i++;
4479                         barrier();
4480                 }
4481                 if (sblk->status_completion_producer_index)
4482                         goto failed;
4483
4484         }
4485         return 0;
4486
4487 failed:
4488         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4489         return -EBUSY;
4490 }
4491
4492 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4493 {
4494         struct cnic_local *cp = dev->cnic_priv;
4495         struct cnic_eth_dev *ethdev = cp->ethdev;
4496
4497         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4498                 return;
4499
4500         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4501                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4502 }
4503
4504 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4505 {
4506         struct cnic_local *cp = dev->cnic_priv;
4507         struct cnic_eth_dev *ethdev = cp->ethdev;
4508
4509         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4510                 return;
4511
4512         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4513                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4514         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4515         synchronize_irq(ethdev->irq_arr[0].vector);
4516 }
4517
4518 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4519 {
4520         struct cnic_local *cp = dev->cnic_priv;
4521         struct cnic_eth_dev *ethdev = cp->ethdev;
4522         struct cnic_uio_dev *udev = cp->udev;
4523         u32 cid_addr, tx_cid, sb_id;
4524         u32 val, offset0, offset1, offset2, offset3;
4525         int i;
4526         struct bnx2_tx_bd *txbd;
4527         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4528         struct status_block *s_blk = cp->status_blk.gen;
4529
4530         sb_id = cp->status_blk_num;
4531         tx_cid = 20;
4532         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4533         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4534                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4535
4536                 tx_cid = TX_TSS_CID + sb_id - 1;
4537                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4538                         (TX_TSS_CID << 7));
4539                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4540         }
4541         cp->tx_cons = *cp->tx_cons_ptr;
4542
4543         cid_addr = GET_CID_ADDR(tx_cid);
4544         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
4545                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4546
4547                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4548                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4549
4550                 offset0 = BNX2_L2CTX_TYPE_XI;
4551                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4552                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4553                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4554         } else {
4555                 cnic_init_context(dev, tx_cid);
4556                 cnic_init_context(dev, tx_cid + 1);
4557
4558                 offset0 = BNX2_L2CTX_TYPE;
4559                 offset1 = BNX2_L2CTX_CMD_TYPE;
4560                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4561                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4562         }
4563         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4564         cnic_ctx_wr(dev, cid_addr, offset0, val);
4565
4566         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4567         cnic_ctx_wr(dev, cid_addr, offset1, val);
4568
4569         txbd = udev->l2_ring;
4570
4571         buf_map = udev->l2_buf_map;
4572         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i++, txbd++) {
4573                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4574                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4575         }
4576         val = (u64) ring_map >> 32;
4577         cnic_ctx_wr(dev, cid_addr, offset2, val);
4578         txbd->tx_bd_haddr_hi = val;
4579
4580         val = (u64) ring_map & 0xffffffff;
4581         cnic_ctx_wr(dev, cid_addr, offset3, val);
4582         txbd->tx_bd_haddr_lo = val;
4583 }
4584
4585 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4586 {
4587         struct cnic_local *cp = dev->cnic_priv;
4588         struct cnic_eth_dev *ethdev = cp->ethdev;
4589         struct cnic_uio_dev *udev = cp->udev;
4590         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4591         int i;
4592         struct bnx2_rx_bd *rxbd;
4593         struct status_block *s_blk = cp->status_blk.gen;
4594         dma_addr_t ring_map = udev->l2_ring_map;
4595
4596         sb_id = cp->status_blk_num;
4597         cnic_init_context(dev, 2);
4598         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4599         coal_reg = BNX2_HC_COMMAND;
4600         coal_val = CNIC_RD(dev, coal_reg);
4601         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4602                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4603
4604                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4605                 coal_reg = BNX2_HC_COALESCE_NOW;
4606                 coal_val = 1 << (11 + sb_id);
4607         }
4608         i = 0;
4609         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4610                 CNIC_WR(dev, coal_reg, coal_val);
4611                 udelay(10);
4612                 i++;
4613                 barrier();
4614         }
4615         cp->rx_cons = *cp->rx_cons_ptr;
4616
4617         cid_addr = GET_CID_ADDR(2);
4618         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4619               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4620         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4621
4622         if (sb_id == 0)
4623                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4624         else
4625                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4626         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4627
4628         rxbd = udev->l2_ring + CNIC_PAGE_SIZE;
4629         for (i = 0; i < BNX2_MAX_RX_DESC_CNT; i++, rxbd++) {
4630                 dma_addr_t buf_map;
4631                 int n = (i % cp->l2_rx_ring_size) + 1;
4632
4633                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4634                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4635                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4636                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4637                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4638         }
4639         val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
4640         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4641         rxbd->rx_bd_haddr_hi = val;
4642
4643         val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
4644         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4645         rxbd->rx_bd_haddr_lo = val;
4646
4647         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4648         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4649 }
4650
4651 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4652 {
4653         struct kwqe *wqes[1], l2kwqe;
4654
4655         memset(&l2kwqe, 0, sizeof(l2kwqe));
4656         wqes[0] = &l2kwqe;
4657         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4658                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4659                                KWQE_OPCODE_SHIFT) | 2;
4660         dev->submit_kwqes(dev, wqes, 1);
4661 }
4662
4663 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4664 {
4665         struct cnic_local *cp = dev->cnic_priv;
4666         u32 val;
4667
4668         val = cp->func << 2;
4669
4670         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4671
4672         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4673                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4674         dev->mac_addr[0] = (u8) (val >> 8);
4675         dev->mac_addr[1] = (u8) val;
4676
4677         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4678
4679         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4680                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4681         dev->mac_addr[2] = (u8) (val >> 24);
4682         dev->mac_addr[3] = (u8) (val >> 16);
4683         dev->mac_addr[4] = (u8) (val >> 8);
4684         dev->mac_addr[5] = (u8) val;
4685
4686         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4687
4688         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4689         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4690                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4691
4692         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4693         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4694         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4695 }
4696
4697 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4698 {
4699         struct cnic_local *cp = dev->cnic_priv;
4700         struct cnic_eth_dev *ethdev = cp->ethdev;
4701         struct status_block *sblk = cp->status_blk.gen;
4702         u32 val, kcq_cid_addr, kwq_cid_addr;
4703         int err;
4704
4705         cnic_set_bnx2_mac(dev);
4706
4707         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4708         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4709         if (CNIC_PAGE_BITS > 12)
4710                 val |= (12 - 8)  << 4;
4711         else
4712                 val |= (CNIC_PAGE_BITS - 8)  << 4;
4713
4714         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4715
4716         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4717         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4718         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4719
4720         err = cnic_setup_5709_context(dev, 1);
4721         if (err)
4722                 return err;
4723
4724         cnic_init_context(dev, KWQ_CID);
4725         cnic_init_context(dev, KCQ_CID);
4726
4727         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4728         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4729
4730         cp->max_kwq_idx = MAX_KWQ_IDX;
4731         cp->kwq_prod_idx = 0;
4732         cp->kwq_con_idx = 0;
4733         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4734
4735         if (BNX2_CHIP(cp) == BNX2_CHIP_5706 || BNX2_CHIP(cp) == BNX2_CHIP_5708)
4736                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4737         else
4738                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4739
4740         /* Initialize the kernel work queue context. */
4741         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4742               (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4743         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4744
4745         val = (CNIC_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4746         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4747
4748         val = ((CNIC_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4749         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4750
4751         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4752         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4753
4754         val = (u32) cp->kwq_info.pgtbl_map;
4755         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4756
4757         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4758         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4759
4760         cp->kcq1.sw_prod_idx = 0;
4761         cp->kcq1.hw_prod_idx_ptr =
4762                 &sblk->status_completion_producer_index;
4763
4764         cp->kcq1.status_idx_ptr = &sblk->status_idx;
4765
4766         /* Initialize the kernel complete queue context. */
4767         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4768               (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4769         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4770
4771         val = (CNIC_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4772         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4773
4774         val = ((CNIC_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4775         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4776
4777         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4778         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4779
4780         val = (u32) cp->kcq1.dma.pgtbl_map;
4781         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4782
4783         cp->int_num = 0;
4784         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4785                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4786                 u32 sb_id = cp->status_blk_num;
4787                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4788
4789                 cp->kcq1.hw_prod_idx_ptr =
4790                         &msblk->status_completion_producer_index;
4791                 cp->kcq1.status_idx_ptr = &msblk->status_idx;
4792                 cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
4793                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4794                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4795                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4796         }
4797
4798         /* Enable Commnad Scheduler notification when we write to the
4799          * host producer index of the kernel contexts. */
4800         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4801
4802         /* Enable Command Scheduler notification when we write to either
4803          * the Send Queue or Receive Queue producer indexes of the kernel
4804          * bypass contexts. */
4805         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4806         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4807
4808         /* Notify COM when the driver post an application buffer. */
4809         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4810
4811         /* Set the CP and COM doorbells.  These two processors polls the
4812          * doorbell for a non zero value before running.  This must be done
4813          * after setting up the kernel queue contexts. */
4814         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4815         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4816
4817         cnic_init_bnx2_tx_ring(dev);
4818         cnic_init_bnx2_rx_ring(dev);
4819
4820         err = cnic_init_bnx2_irq(dev);
4821         if (err) {
4822                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4823                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4824                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4825                 return err;
4826         }
4827
4828         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
4829
4830         return 0;
4831 }
4832
4833 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4834 {
4835         struct cnic_local *cp = dev->cnic_priv;
4836         struct cnic_eth_dev *ethdev = cp->ethdev;
4837         u32 start_offset = ethdev->ctx_tbl_offset;
4838         int i;
4839
4840         for (i = 0; i < cp->ctx_blks; i++) {
4841                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4842                 dma_addr_t map = ctx->mapping;
4843
4844                 if (cp->ctx_align) {
4845                         unsigned long mask = cp->ctx_align - 1;
4846
4847                         map = (map + mask) & ~mask;
4848                 }
4849
4850                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4851         }
4852 }
4853
4854 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4855 {
4856         struct cnic_local *cp = dev->cnic_priv;
4857         struct cnic_eth_dev *ethdev = cp->ethdev;
4858         int err = 0;
4859
4860         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4861                      (unsigned long) dev);
4862         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4863                 err = cnic_request_irq(dev);
4864
4865         return err;
4866 }
4867
4868 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4869                                                 u16 sb_id, u8 sb_index,
4870                                                 u8 disable)
4871 {
4872         struct bnx2x *bp = netdev_priv(dev->netdev);
4873
4874         u32 addr = BAR_CSTRORM_INTMEM +
4875                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4876                         offsetof(struct hc_status_block_data_e1x, index_data) +
4877                         sizeof(struct hc_index_data)*sb_index +
4878                         offsetof(struct hc_index_data, flags);
4879         u16 flags = CNIC_RD16(dev, addr);
4880         /* clear and set */
4881         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4882         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4883                   HC_INDEX_DATA_HC_ENABLED);
4884         CNIC_WR16(dev, addr, flags);
4885 }
4886
4887 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4888 {
4889         struct cnic_local *cp = dev->cnic_priv;
4890         struct bnx2x *bp = netdev_priv(dev->netdev);
4891         u8 sb_id = cp->status_blk_num;
4892
4893         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4894                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4895                         offsetof(struct hc_status_block_data_e1x, index_data) +
4896                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4897                         offsetof(struct hc_index_data, timeout), 64 / 4);
4898         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4899 }
4900
4901 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4902 {
4903 }
4904
4905 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4906                                     struct client_init_ramrod_data *data)
4907 {
4908         struct cnic_local *cp = dev->cnic_priv;
4909         struct bnx2x *bp = netdev_priv(dev->netdev);
4910         struct cnic_uio_dev *udev = cp->udev;
4911         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4912         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4913         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4914         int i;
4915         u32 cli = cp->ethdev->iscsi_l2_client_id;
4916         u32 val;
4917
4918         memset(txbd, 0, CNIC_PAGE_SIZE);
4919
4920         buf_map = udev->l2_buf_map;
4921         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4922                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4923                 struct eth_tx_parse_bd_e1x *pbd_e1x =
4924                         &((txbd + 1)->parse_bd_e1x);
4925                 struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2);
4926                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4927
4928                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4929                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4930                 reg_bd->addr_hi = start_bd->addr_hi;
4931                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4932                 start_bd->nbytes = cpu_to_le16(0x10);
4933                 start_bd->nbd = cpu_to_le16(3);
4934                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4935                 start_bd->general_data &= ~ETH_TX_START_BD_PARSE_NBDS;
4936                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4937
4938                 if (BNX2X_CHIP_IS_E2_PLUS(bp))
4939                         pbd_e2->parsing_data = (UNICAST_ADDRESS <<
4940                                 ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT);
4941                 else
4942                         pbd_e1x->global_data = (UNICAST_ADDRESS <<
4943                                 ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT);
4944         }
4945
4946         val = (u64) ring_map >> 32;
4947         txbd->next_bd.addr_hi = cpu_to_le32(val);
4948
4949         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4950
4951         val = (u64) ring_map & 0xffffffff;
4952         txbd->next_bd.addr_lo = cpu_to_le32(val);
4953
4954         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4955
4956         /* Other ramrod params */
4957         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4958         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4959
4960         /* reset xstorm per client statistics */
4961         if (cli < MAX_STAT_COUNTER_ID) {
4962                 data->general.statistics_zero_flg = 1;
4963                 data->general.statistics_en_flg = 1;
4964                 data->general.statistics_counter_id = cli;
4965         }
4966
4967         cp->tx_cons_ptr =
4968                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4969 }
4970
4971 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4972                                     struct client_init_ramrod_data *data)
4973 {
4974         struct cnic_local *cp = dev->cnic_priv;
4975         struct bnx2x *bp = netdev_priv(dev->netdev);
4976         struct cnic_uio_dev *udev = cp->udev;
4977         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4978                                 CNIC_PAGE_SIZE);
4979         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4980                                 (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
4981         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4982         int i;
4983         u32 cli = cp->ethdev->iscsi_l2_client_id;
4984         int cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
4985         u32 val;
4986         dma_addr_t ring_map = udev->l2_ring_map;
4987
4988         /* General data */
4989         data->general.client_id = cli;
4990         data->general.activate_flg = 1;
4991         data->general.sp_client_id = cli;
4992         data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4993         data->general.func_id = bp->pfid;
4994
4995         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4996                 dma_addr_t buf_map;
4997                 int n = (i % cp->l2_rx_ring_size) + 1;
4998
4999                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
5000                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
5001                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
5002         }
5003
5004         val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
5005         rxbd->addr_hi = cpu_to_le32(val);
5006         data->rx.bd_page_base.hi = cpu_to_le32(val);
5007
5008         val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
5009         rxbd->addr_lo = cpu_to_le32(val);
5010         data->rx.bd_page_base.lo = cpu_to_le32(val);
5011
5012         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
5013         val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) >> 32;
5014         rxcqe->addr_hi = cpu_to_le32(val);
5015         data->rx.cqe_page_base.hi = cpu_to_le32(val);
5016
5017         val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) & 0xffffffff;
5018         rxcqe->addr_lo = cpu_to_le32(val);
5019         data->rx.cqe_page_base.lo = cpu_to_le32(val);
5020
5021         /* Other ramrod params */
5022         data->rx.client_qzone_id = cl_qzone_id;
5023         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
5024         data->rx.status_block_id = BNX2X_DEF_SB_ID;
5025
5026         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
5027
5028         data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
5029         data->rx.outer_vlan_removal_enable_flg = 1;
5030         data->rx.silent_vlan_removal_flg = 1;
5031         data->rx.silent_vlan_value = 0;
5032         data->rx.silent_vlan_mask = 0xffff;
5033
5034         cp->rx_cons_ptr =
5035                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
5036         cp->rx_cons = *cp->rx_cons_ptr;
5037 }
5038
5039 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
5040 {
5041         struct cnic_local *cp = dev->cnic_priv;
5042         struct bnx2x *bp = netdev_priv(dev->netdev);
5043         u32 pfid = bp->pfid;
5044
5045         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
5046                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
5047         cp->kcq1.sw_prod_idx = 0;
5048
5049         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5050                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5051
5052                 cp->kcq1.hw_prod_idx_ptr =
5053                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5054                 cp->kcq1.status_idx_ptr =
5055                         &sb->sb.running_index[SM_RX_ID];
5056         } else {
5057                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
5058
5059                 cp->kcq1.hw_prod_idx_ptr =
5060                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5061                 cp->kcq1.status_idx_ptr =
5062                         &sb->sb.running_index[SM_RX_ID];
5063         }
5064
5065         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5066                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5067
5068                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
5069                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
5070                 cp->kcq2.sw_prod_idx = 0;
5071                 cp->kcq2.hw_prod_idx_ptr =
5072                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
5073                 cp->kcq2.status_idx_ptr =
5074                         &sb->sb.running_index[SM_RX_ID];
5075         }
5076 }
5077
5078 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
5079 {
5080         struct cnic_local *cp = dev->cnic_priv;
5081         struct bnx2x *bp = netdev_priv(dev->netdev);
5082         struct cnic_eth_dev *ethdev = cp->ethdev;
5083         int func, ret;
5084         u32 pfid;
5085
5086         dev->stats_addr = ethdev->addr_drv_info_to_mcp;
5087         cp->func = bp->pf_num;
5088
5089         func = CNIC_FUNC(cp);
5090         pfid = bp->pfid;
5091
5092         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5093                                cp->iscsi_start_cid, 0);
5094
5095         if (ret)
5096                 return -ENOMEM;
5097
5098         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5099                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5100                                         cp->fcoe_start_cid, 0);
5101
5102                 if (ret)
5103                         return -ENOMEM;
5104         }
5105
5106         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
5107
5108         cnic_init_bnx2x_kcq(dev);
5109
5110         /* Only 1 EQ */
5111         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5112         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5113                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5114         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5115                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5116                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5117         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5118                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5119                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5120         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5121                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5122                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5123         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5124                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5125                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5126         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5127                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5128         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5129                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5130         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5131                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5132                 HC_INDEX_ISCSI_EQ_CONS);
5133
5134         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5135                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5136                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
5137         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5138                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5139                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
5140
5141         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
5142                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
5143
5144         cnic_setup_bnx2x_context(dev);
5145
5146         ret = cnic_init_bnx2x_irq(dev);
5147         if (ret)
5148                 return ret;
5149
5150         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
5151         return 0;
5152 }
5153
5154 static void cnic_init_rings(struct cnic_dev *dev)
5155 {
5156         struct cnic_local *cp = dev->cnic_priv;
5157         struct bnx2x *bp = netdev_priv(dev->netdev);
5158         struct cnic_uio_dev *udev = cp->udev;
5159
5160         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5161                 return;
5162
5163         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5164                 cnic_init_bnx2_tx_ring(dev);
5165                 cnic_init_bnx2_rx_ring(dev);
5166                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5167         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5168                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5169                 u32 cid = cp->ethdev->iscsi_l2_cid;
5170                 u32 cl_qzone_id;
5171                 struct client_init_ramrod_data *data;
5172                 union l5cm_specific_data l5_data;
5173                 struct ustorm_eth_rx_producers rx_prods = {0};
5174                 u32 off, i, *cid_ptr;
5175
5176                 rx_prods.bd_prod = 0;
5177                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
5178                 barrier();
5179
5180                 cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
5181
5182                 off = BAR_USTRORM_INTMEM +
5183                         (BNX2X_CHIP_IS_E2_PLUS(bp) ?
5184                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
5185                          USTORM_RX_PRODS_E1X_OFFSET(BP_PORT(bp), cli));
5186
5187                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5188                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5189
5190                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5191
5192                 data = udev->l2_buf;
5193                 cid_ptr = udev->l2_buf + 12;
5194
5195                 memset(data, 0, sizeof(*data));
5196
5197                 cnic_init_bnx2x_tx_ring(dev, data);
5198                 cnic_init_bnx2x_rx_ring(dev, data);
5199
5200                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5201                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5202
5203                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5204
5205                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5206                         cid, ETH_CONNECTION_TYPE, &l5_data);
5207
5208                 i = 0;
5209                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5210                        ++i < 10)
5211                         msleep(1);
5212
5213                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5214                         netdev_err(dev->netdev,
5215                                 "iSCSI CLIENT_SETUP did not complete\n");
5216                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5217                 cnic_ring_ctl(dev, cid, cli, 1);
5218                 *cid_ptr = cid >> 4;
5219                 *(cid_ptr + 1) = cid * bp->db_size;
5220                 *(cid_ptr + 2) = UIO_USE_TX_DOORBELL;
5221         }
5222 }
5223
5224 static void cnic_shutdown_rings(struct cnic_dev *dev)
5225 {
5226         struct cnic_local *cp = dev->cnic_priv;
5227         struct cnic_uio_dev *udev = cp->udev;
5228         void *rx_ring;
5229
5230         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5231                 return;
5232
5233         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5234                 cnic_shutdown_bnx2_rx_ring(dev);
5235         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5236                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5237                 u32 cid = cp->ethdev->iscsi_l2_cid;
5238                 union l5cm_specific_data l5_data;
5239                 int i;
5240
5241                 cnic_ring_ctl(dev, cid, cli, 0);
5242
5243                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5244
5245                 l5_data.phy_address.lo = cli;
5246                 l5_data.phy_address.hi = 0;
5247                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5248                         cid, ETH_CONNECTION_TYPE, &l5_data);
5249                 i = 0;
5250                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5251                        ++i < 10)
5252                         msleep(1);
5253
5254                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5255                         netdev_err(dev->netdev,
5256                                 "iSCSI CLIENT_HALT did not complete\n");
5257                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5258
5259                 memset(&l5_data, 0, sizeof(l5_data));
5260                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5261                         cid, NONE_CONNECTION_TYPE, &l5_data);
5262                 msleep(10);
5263         }
5264         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5265         rx_ring = udev->l2_ring + CNIC_PAGE_SIZE;
5266         memset(rx_ring, 0, CNIC_PAGE_SIZE);
5267 }
5268
5269 static int cnic_register_netdev(struct cnic_dev *dev)
5270 {
5271         struct cnic_local *cp = dev->cnic_priv;
5272         struct cnic_eth_dev *ethdev = cp->ethdev;
5273         int err;
5274
5275         if (!ethdev)
5276                 return -ENODEV;
5277
5278         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5279                 return 0;
5280
5281         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5282         if (err)
5283                 netdev_err(dev->netdev, "register_cnic failed\n");
5284
5285         /* Read iSCSI config again.  On some bnx2x device, iSCSI config
5286          * can change after firmware is downloaded.
5287          */
5288         dev->max_iscsi_conn = ethdev->max_iscsi_conn;
5289         if (ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
5290                 dev->max_iscsi_conn = 0;
5291
5292         return err;
5293 }
5294
5295 static void cnic_unregister_netdev(struct cnic_dev *dev)
5296 {
5297         struct cnic_local *cp = dev->cnic_priv;
5298         struct cnic_eth_dev *ethdev = cp->ethdev;
5299
5300         if (!ethdev)
5301                 return;
5302
5303         ethdev->drv_unregister_cnic(dev->netdev);
5304 }
5305
5306 static int cnic_start_hw(struct cnic_dev *dev)
5307 {
5308         struct cnic_local *cp = dev->cnic_priv;
5309         struct cnic_eth_dev *ethdev = cp->ethdev;
5310         int err;
5311
5312         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5313                 return -EALREADY;
5314
5315         dev->regview = ethdev->io_base;
5316         pci_dev_get(dev->pcidev);
5317         cp->func = PCI_FUNC(dev->pcidev->devfn);
5318         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5319         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5320
5321         err = cp->alloc_resc(dev);
5322         if (err) {
5323                 netdev_err(dev->netdev, "allocate resource failure\n");
5324                 goto err1;
5325         }
5326
5327         err = cp->start_hw(dev);
5328         if (err)
5329                 goto err1;
5330
5331         err = cnic_cm_open(dev);
5332         if (err)
5333                 goto err1;
5334
5335         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5336
5337         cp->enable_int(dev);
5338
5339         return 0;
5340
5341 err1:
5342         cp->free_resc(dev);
5343         pci_dev_put(dev->pcidev);
5344         return err;
5345 }
5346
5347 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5348 {
5349         cnic_disable_bnx2_int_sync(dev);
5350
5351         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5352         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5353
5354         cnic_init_context(dev, KWQ_CID);
5355         cnic_init_context(dev, KCQ_CID);
5356
5357         cnic_setup_5709_context(dev, 0);
5358         cnic_free_irq(dev);
5359
5360         cnic_free_resc(dev);
5361 }
5362
5363
5364 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5365 {
5366         struct cnic_local *cp = dev->cnic_priv;
5367         struct bnx2x *bp = netdev_priv(dev->netdev);
5368         u32 hc_index = HC_INDEX_ISCSI_EQ_CONS;
5369         u32 sb_id = cp->status_blk_num;
5370         u32 idx_off, syn_off;
5371
5372         cnic_free_irq(dev);
5373
5374         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5375                 idx_off = offsetof(struct hc_status_block_e2, index_values) +
5376                           (hc_index * sizeof(u16));
5377
5378                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E2_OFFSET(hc_index, sb_id);
5379         } else {
5380                 idx_off = offsetof(struct hc_status_block_e1x, index_values) +
5381                           (hc_index * sizeof(u16));
5382
5383                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E1X_OFFSET(hc_index, sb_id);
5384         }
5385         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + syn_off, 0);
5386         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_OFFSET(sb_id) +
5387                   idx_off, 0);
5388
5389         *cp->kcq1.hw_prod_idx_ptr = 0;
5390         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5391                 CSTORM_ISCSI_EQ_CONS_OFFSET(bp->pfid, 0), 0);
5392         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5393         cnic_free_resc(dev);
5394 }
5395
5396 static void cnic_stop_hw(struct cnic_dev *dev)
5397 {
5398         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5399                 struct cnic_local *cp = dev->cnic_priv;
5400                 int i = 0;
5401
5402                 /* Need to wait for the ring shutdown event to complete
5403                  * before clearing the CNIC_UP flag.
5404                  */
5405                 while (cp->udev && cp->udev->uio_dev != -1 && i < 15) {
5406                         msleep(100);
5407                         i++;
5408                 }
5409                 cnic_shutdown_rings(dev);
5410                 cp->stop_cm(dev);
5411                 cp->ethdev->drv_state &= ~CNIC_DRV_STATE_HANDLES_IRQ;
5412                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5413                 RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5414                 synchronize_rcu();
5415                 cnic_cm_shutdown(dev);
5416                 cp->stop_hw(dev);
5417                 pci_dev_put(dev->pcidev);
5418         }
5419 }
5420
5421 static void cnic_free_dev(struct cnic_dev *dev)
5422 {
5423         int i = 0;
5424
5425         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5426                 msleep(100);
5427                 i++;
5428         }
5429         if (atomic_read(&dev->ref_count) != 0)
5430                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5431
5432         netdev_info(dev->netdev, "Removed CNIC device\n");
5433         dev_put(dev->netdev);
5434         kfree(dev);
5435 }
5436
5437 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5438                                        struct pci_dev *pdev)
5439 {
5440         struct cnic_dev *cdev;
5441         struct cnic_local *cp;
5442         int alloc_size;
5443
5444         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5445
5446         cdev = kzalloc(alloc_size, GFP_KERNEL);
5447         if (cdev == NULL)
5448                 return NULL;
5449
5450         cdev->netdev = dev;
5451         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5452         cdev->register_device = cnic_register_device;
5453         cdev->unregister_device = cnic_unregister_device;
5454         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5455
5456         cp = cdev->cnic_priv;
5457         cp->dev = cdev;
5458         cp->l2_single_buf_size = 0x400;
5459         cp->l2_rx_ring_size = 3;
5460
5461         spin_lock_init(&cp->cnic_ulp_lock);
5462
5463         netdev_info(dev, "Added CNIC device\n");
5464
5465         return cdev;
5466 }
5467
5468 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5469 {
5470         struct pci_dev *pdev;
5471         struct cnic_dev *cdev;
5472         struct cnic_local *cp;
5473         struct bnx2 *bp = netdev_priv(dev);
5474         struct cnic_eth_dev *ethdev = NULL;
5475
5476         if (bp->cnic_probe)
5477                 ethdev = (bp->cnic_probe)(dev);
5478
5479         if (!ethdev)
5480                 return NULL;
5481
5482         pdev = ethdev->pdev;
5483         if (!pdev)
5484                 return NULL;
5485
5486         dev_hold(dev);
5487         pci_dev_get(pdev);
5488         if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5489              pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5490             (pdev->revision < 0x10)) {
5491                 pci_dev_put(pdev);
5492                 goto cnic_err;
5493         }
5494         pci_dev_put(pdev);
5495
5496         cdev = cnic_alloc_dev(dev, pdev);
5497         if (cdev == NULL)
5498                 goto cnic_err;
5499
5500         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5501         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5502
5503         cp = cdev->cnic_priv;
5504         cp->ethdev = ethdev;
5505         cdev->pcidev = pdev;
5506         cp->chip_id = ethdev->chip_id;
5507
5508         cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5509
5510         cp->cnic_ops = &cnic_bnx2_ops;
5511         cp->start_hw = cnic_start_bnx2_hw;
5512         cp->stop_hw = cnic_stop_bnx2_hw;
5513         cp->setup_pgtbl = cnic_setup_page_tbl;
5514         cp->alloc_resc = cnic_alloc_bnx2_resc;
5515         cp->free_resc = cnic_free_resc;
5516         cp->start_cm = cnic_cm_init_bnx2_hw;
5517         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5518         cp->enable_int = cnic_enable_bnx2_int;
5519         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5520         cp->close_conn = cnic_close_bnx2_conn;
5521         return cdev;
5522
5523 cnic_err:
5524         dev_put(dev);
5525         return NULL;
5526 }
5527
5528 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5529 {
5530         struct pci_dev *pdev;
5531         struct cnic_dev *cdev;
5532         struct cnic_local *cp;
5533         struct bnx2x *bp = netdev_priv(dev);
5534         struct cnic_eth_dev *ethdev = NULL;
5535
5536         if (bp->cnic_probe)
5537                 ethdev = bp->cnic_probe(dev);
5538
5539         if (!ethdev)
5540                 return NULL;
5541
5542         pdev = ethdev->pdev;
5543         if (!pdev)
5544                 return NULL;
5545
5546         dev_hold(dev);
5547         cdev = cnic_alloc_dev(dev, pdev);
5548         if (cdev == NULL) {
5549                 dev_put(dev);
5550                 return NULL;
5551         }
5552
5553         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5554         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5555
5556         cp = cdev->cnic_priv;
5557         cp->ethdev = ethdev;
5558         cdev->pcidev = pdev;
5559         cp->chip_id = ethdev->chip_id;
5560
5561         cdev->stats_addr = ethdev->addr_drv_info_to_mcp;
5562
5563         if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5564                 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5565         if (CNIC_SUPPORTS_FCOE(bp)) {
5566                 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5567                 cdev->max_fcoe_exchanges = ethdev->max_fcoe_exchanges;
5568         }
5569
5570         if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
5571                 cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
5572
5573         memcpy(cdev->mac_addr, ethdev->iscsi_mac, ETH_ALEN);
5574
5575         cp->cnic_ops = &cnic_bnx2x_ops;
5576         cp->start_hw = cnic_start_bnx2x_hw;
5577         cp->stop_hw = cnic_stop_bnx2x_hw;
5578         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5579         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5580         cp->free_resc = cnic_free_resc;
5581         cp->start_cm = cnic_cm_init_bnx2x_hw;
5582         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5583         cp->enable_int = cnic_enable_bnx2x_int;
5584         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5585         if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5586                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5587                 cp->arm_int = cnic_arm_bnx2x_e2_msix;
5588         } else {
5589                 cp->ack_int = cnic_ack_bnx2x_msix;
5590                 cp->arm_int = cnic_arm_bnx2x_msix;
5591         }
5592         cp->close_conn = cnic_close_bnx2x_conn;
5593         return cdev;
5594 }
5595
5596 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5597 {
5598         struct ethtool_drvinfo drvinfo;
5599         struct cnic_dev *cdev = NULL;
5600
5601         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5602                 memset(&drvinfo, 0, sizeof(drvinfo));
5603                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5604
5605                 if (!strcmp(drvinfo.driver, "bnx2"))
5606                         cdev = init_bnx2_cnic(dev);
5607                 if (!strcmp(drvinfo.driver, "bnx2x"))
5608                         cdev = init_bnx2x_cnic(dev);
5609                 if (cdev) {
5610                         write_lock(&cnic_dev_lock);
5611                         list_add(&cdev->list, &cnic_dev_list);
5612                         write_unlock(&cnic_dev_lock);
5613                 }
5614         }
5615         return cdev;
5616 }
5617
5618 static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
5619                               u16 vlan_id)
5620 {
5621         int if_type;
5622
5623         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5624                 struct cnic_ulp_ops *ulp_ops;
5625                 void *ctx;
5626
5627                 mutex_lock(&cnic_lock);
5628                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
5629                                                 lockdep_is_held(&cnic_lock));
5630                 if (!ulp_ops || !ulp_ops->indicate_netevent) {
5631                         mutex_unlock(&cnic_lock);
5632                         continue;
5633                 }
5634
5635                 ctx = cp->ulp_handle[if_type];
5636
5637                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
5638                 mutex_unlock(&cnic_lock);
5639
5640                 ulp_ops->indicate_netevent(ctx, event, vlan_id);
5641
5642                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
5643         }
5644 }
5645
5646 /* netdev event handler */
5647 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5648                                                          void *ptr)
5649 {
5650         struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
5651         struct cnic_dev *dev;
5652         int new_dev = 0;
5653
5654         dev = cnic_from_netdev(netdev);
5655
5656         if (!dev && event == NETDEV_REGISTER) {
5657                 /* Check for the hot-plug device */
5658                 dev = is_cnic_dev(netdev);
5659                 if (dev) {
5660                         new_dev = 1;
5661                         cnic_hold(dev);
5662                 }
5663         }
5664         if (dev) {
5665                 struct cnic_local *cp = dev->cnic_priv;
5666
5667                 if (new_dev)
5668                         cnic_ulp_init(dev);
5669                 else if (event == NETDEV_UNREGISTER)
5670                         cnic_ulp_exit(dev);
5671
5672                 if (event == NETDEV_UP) {
5673                         if (cnic_register_netdev(dev) != 0) {
5674                                 cnic_put(dev);
5675                                 goto done;
5676                         }
5677                         if (!cnic_start_hw(dev))
5678                                 cnic_ulp_start(dev);
5679                 }
5680
5681                 cnic_rcv_netevent(cp, event, 0);
5682
5683                 if (event == NETDEV_GOING_DOWN) {
5684                         cnic_ulp_stop(dev);
5685                         cnic_stop_hw(dev);
5686                         cnic_unregister_netdev(dev);
5687                 } else if (event == NETDEV_UNREGISTER) {
5688                         write_lock(&cnic_dev_lock);
5689                         list_del_init(&dev->list);
5690                         write_unlock(&cnic_dev_lock);
5691
5692                         cnic_put(dev);
5693                         cnic_free_dev(dev);
5694                         goto done;
5695                 }
5696                 cnic_put(dev);
5697         } else {
5698                 struct net_device *realdev;
5699                 u16 vid;
5700
5701                 vid = cnic_get_vlan(netdev, &realdev);
5702                 if (realdev) {
5703                         dev = cnic_from_netdev(realdev);
5704                         if (dev) {
5705                                 vid |= VLAN_TAG_PRESENT;
5706                                 cnic_rcv_netevent(dev->cnic_priv, event, vid);
5707                                 cnic_put(dev);
5708                         }
5709                 }
5710         }
5711 done:
5712         return NOTIFY_DONE;
5713 }
5714
5715 static struct notifier_block cnic_netdev_notifier = {
5716         .notifier_call = cnic_netdev_event
5717 };
5718
5719 static void cnic_release(void)
5720 {
5721         struct cnic_uio_dev *udev;
5722
5723         while (!list_empty(&cnic_udev_list)) {
5724                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5725                                   list);
5726                 cnic_free_uio(udev);
5727         }
5728 }
5729
5730 static int __init cnic_init(void)
5731 {
5732         int rc = 0;
5733
5734         pr_info("%s", version);
5735
5736         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5737         if (rc) {
5738                 cnic_release();
5739                 return rc;
5740         }
5741
5742         cnic_wq = create_singlethread_workqueue("cnic_wq");
5743         if (!cnic_wq) {
5744                 cnic_release();
5745                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5746                 return -ENOMEM;
5747         }
5748
5749         return 0;
5750 }
5751
5752 static void __exit cnic_exit(void)
5753 {
5754         unregister_netdevice_notifier(&cnic_netdev_notifier);
5755         cnic_release();
5756         destroy_workqueue(cnic_wq);
5757 }
5758
5759 module_init(cnic_init);
5760 module_exit(cnic_exit);