drivers/net/cnic.c

   1 /* cnic.c: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2010 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 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
  31 #define BCM_VLAN 1
  32 #endif
  33 #include <net/ip.h>
  34 #include <net/tcp.h>
  35 #include <net/route.h>
  36 #include <net/ipv6.h>
  37 #include <net/ip6_route.h>
  38 #include <net/ip6_checksum.h>
  39 #include <scsi/iscsi_if.h>
  40
  41 #include "cnic_if.h"
  42 #include "bnx2.h"
  43 #include "bnx2x_reg.h"
  44 #include "bnx2x_fw_defs.h"
  45 #include "bnx2x_hsi.h"
  46 #include "../scsi/bnx2i/57xx_iscsi_constants.h"
  47 #include "../scsi/bnx2i/57xx_iscsi_hsi.h"
  48 #include "cnic.h"
  49 #include "cnic_defs.h"
  50
  51 #define DRV_MODULE_NAME         "cnic"
  52
  53 static char version[] __devinitdata =
  54         "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  55
  56 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  57               "Chen (zongxi@broadcom.com");
  58 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
  59 MODULE_LICENSE("GPL");
  60 MODULE_VERSION(CNIC_MODULE_VERSION);
  61
  62 static LIST_HEAD(cnic_dev_list);
  63 static DEFINE_RWLOCK(cnic_dev_lock);
  64 static DEFINE_MUTEX(cnic_lock);
  65
  66 static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  67
  68 static int cnic_service_bnx2(void *, void *);
  69 static int cnic_service_bnx2x(void *, void *);
  70 static int cnic_ctl(void *, struct cnic_ctl_info *);
  71
  72 static struct cnic_ops cnic_bnx2_ops = {
  73         .cnic_owner     = THIS_MODULE,
  74         .cnic_handler   = cnic_service_bnx2,
  75         .cnic_ctl       = cnic_ctl,
  76 };
  77
  78 static struct cnic_ops cnic_bnx2x_ops = {
  79         .cnic_owner     = THIS_MODULE,
  80         .cnic_handler   = cnic_service_bnx2x,
  81         .cnic_ctl       = cnic_ctl,
  82 };
  83
  84 static void cnic_shutdown_rings(struct cnic_dev *);
  85 static void cnic_init_rings(struct cnic_dev *);
  86 static int cnic_cm_set_pg(struct cnic_sock *);
  87
  88 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
  89 {
  90         struct cnic_dev *dev = uinfo->priv;
  91         struct cnic_local *cp = dev->cnic_priv;
  92
  93         if (!capable(CAP_NET_ADMIN))
  94                 return -EPERM;
  95
  96         if (cp->uio_dev != -1)
  97                 return -EBUSY;
  98
  99         rtnl_lock();
 100         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 101                 rtnl_unlock();
 102                 return -ENODEV;
 103         }
 104
 105         cp->uio_dev = iminor(inode);
 106
 107         cnic_init_rings(dev);
 108         rtnl_unlock();
 109
 110         return 0;
 111 }
 112
 113 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 114 {
 115         struct cnic_dev *dev = uinfo->priv;
 116         struct cnic_local *cp = dev->cnic_priv;
 117
 118         cnic_shutdown_rings(dev);
 119
 120         cp->uio_dev = -1;
 121         return 0;
 122 }
 123
 124 static inline void cnic_hold(struct cnic_dev *dev)
 125 {
 126         atomic_inc(&dev->ref_count);
 127 }
 128
 129 static inline void cnic_put(struct cnic_dev *dev)
 130 {
 131         atomic_dec(&dev->ref_count);
 132 }
 133
 134 static inline void csk_hold(struct cnic_sock *csk)
 135 {
 136         atomic_inc(&csk->ref_count);
 137 }
 138
 139 static inline void csk_put(struct cnic_sock *csk)
 140 {
 141         atomic_dec(&csk->ref_count);
 142 }
 143
 144 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 145 {
 146         struct cnic_dev *cdev;
 147
 148         read_lock(&cnic_dev_lock);
 149         list_for_each_entry(cdev, &cnic_dev_list, list) {
 150                 if (netdev == cdev->netdev) {
 151                         cnic_hold(cdev);
 152                         read_unlock(&cnic_dev_lock);
 153                         return cdev;
 154                 }
 155         }
 156         read_unlock(&cnic_dev_lock);
 157         return NULL;
 158 }
 159
 160 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 161 {
 162         atomic_inc(&ulp_ops->ref_count);
 163 }
 164
 165 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 166 {
 167         atomic_dec(&ulp_ops->ref_count);
 168 }
 169
 170 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 171 {
 172         struct cnic_local *cp = dev->cnic_priv;
 173         struct cnic_eth_dev *ethdev = cp->ethdev;
 174         struct drv_ctl_info info;
 175         struct drv_ctl_io *io = &info.data.io;
 176
 177         info.cmd = DRV_CTL_CTX_WR_CMD;
 178         io->cid_addr = cid_addr;
 179         io->offset = off;
 180         io->data = val;
 181         ethdev->drv_ctl(dev->netdev, &info);
 182 }
 183
 184 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 185 {
 186         struct cnic_local *cp = dev->cnic_priv;
 187         struct cnic_eth_dev *ethdev = cp->ethdev;
 188         struct drv_ctl_info info;
 189         struct drv_ctl_io *io = &info.data.io;
 190
 191         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 192         io->offset = off;
 193         io->dma_addr = addr;
 194         ethdev->drv_ctl(dev->netdev, &info);
 195 }
 196
 197 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 198 {
 199         struct cnic_local *cp = dev->cnic_priv;
 200         struct cnic_eth_dev *ethdev = cp->ethdev;
 201         struct drv_ctl_info info;
 202         struct drv_ctl_l2_ring *ring = &info.data.ring;
 203
 204         if (start)
 205                 info.cmd = DRV_CTL_START_L2_CMD;
 206         else
 207                 info.cmd = DRV_CTL_STOP_L2_CMD;
 208
 209         ring->cid = cid;
 210         ring->client_id = cl_id;
 211         ethdev->drv_ctl(dev->netdev, &info);
 212 }
 213
 214 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 215 {
 216         struct cnic_local *cp = dev->cnic_priv;
 217         struct cnic_eth_dev *ethdev = cp->ethdev;
 218         struct drv_ctl_info info;
 219         struct drv_ctl_io *io = &info.data.io;
 220
 221         info.cmd = DRV_CTL_IO_WR_CMD;
 222         io->offset = off;
 223         io->data = val;
 224         ethdev->drv_ctl(dev->netdev, &info);
 225 }
 226
 227 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 228 {
 229         struct cnic_local *cp = dev->cnic_priv;
 230         struct cnic_eth_dev *ethdev = cp->ethdev;
 231         struct drv_ctl_info info;
 232         struct drv_ctl_io *io = &info.data.io;
 233
 234         info.cmd = DRV_CTL_IO_RD_CMD;
 235         io->offset = off;
 236         ethdev->drv_ctl(dev->netdev, &info);
 237         return io->data;
 238 }
 239
 240 static int cnic_in_use(struct cnic_sock *csk)
 241 {
 242         return test_bit(SK_F_INUSE, &csk->flags);
 243 }
 244
 245 static void cnic_kwq_completion(struct cnic_dev *dev, u32 count)
 246 {
 247         struct cnic_local *cp = dev->cnic_priv;
 248         struct cnic_eth_dev *ethdev = cp->ethdev;
 249         struct drv_ctl_info info;
 250
 251         info.cmd = DRV_CTL_COMPLETION_CMD;
 252         info.data.comp.comp_count = count;
 253         ethdev->drv_ctl(dev->netdev, &info);
 254 }
 255
 256 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 257 {
 258         u32 i;
 259
 260         for (i = 0; i < cp->max_cid_space; i++) {
 261                 if (cp->ctx_tbl[i].cid == cid) {
 262                         *l5_cid = i;
 263                         return 0;
 264                 }
 265         }
 266         return -EINVAL;
 267 }
 268
 269 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 270                            struct cnic_sock *csk)
 271 {
 272         struct iscsi_path path_req;
 273         char *buf = NULL;
 274         u16 len = 0;
 275         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 276         struct cnic_ulp_ops *ulp_ops;
 277
 278         if (cp->uio_dev == -1)
 279                 return -ENODEV;
 280
 281         if (csk) {
 282                 len = sizeof(path_req);
 283                 buf = (char *) &path_req;
 284                 memset(&path_req, 0, len);
 285
 286                 msg_type = ISCSI_KEVENT_PATH_REQ;
 287                 path_req.handle = (u64) csk->l5_cid;
 288                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 289                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 290                                sizeof(struct in6_addr));
 291                         path_req.ip_addr_len = 16;
 292                 } else {
 293                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 294                                sizeof(struct in_addr));
 295                         path_req.ip_addr_len = 4;
 296                 }
 297                 path_req.vlan_id = csk->vlan_id;
 298                 path_req.pmtu = csk->mtu;
 299         }
 300
 301         rcu_read_lock();
 302         ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
 303         if (ulp_ops)
 304                 ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len);
 305         rcu_read_unlock();
 306         return 0;
 307 }
 308
 309 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 310                                   char *buf, u16 len)
 311 {
 312         int rc = -EINVAL;
 313
 314         switch (msg_type) {
 315         case ISCSI_UEVENT_PATH_UPDATE: {
 316                 struct cnic_local *cp;
 317                 u32 l5_cid;
 318                 struct cnic_sock *csk;
 319                 struct iscsi_path *path_resp;
 320
 321                 if (len < sizeof(*path_resp))
 322                         break;
 323
 324                 path_resp = (struct iscsi_path *) buf;
 325                 cp = dev->cnic_priv;
 326                 l5_cid = (u32) path_resp->handle;
 327                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 328                         break;
 329
 330                 rcu_read_lock();
 331                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
 332                         rc = -ENODEV;
 333                         rcu_read_unlock();
 334                         break;
 335                 }
 336                 csk = &cp->csk_tbl[l5_cid];
 337                 csk_hold(csk);
 338                 if (cnic_in_use(csk)) {
 339                         memcpy(csk->ha, path_resp->mac_addr, 6);
 340                         if (test_bit(SK_F_IPV6, &csk->flags))
 341                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 342                                        sizeof(struct in6_addr));
 343                         else
 344                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 345                                        sizeof(struct in_addr));
 346                         if (is_valid_ether_addr(csk->ha))
 347                                 cnic_cm_set_pg(csk);
 348                 }
 349                 csk_put(csk);
 350                 rcu_read_unlock();
 351                 rc = 0;
 352         }
 353         }
 354
 355         return rc;
 356 }
 357
 358 static int cnic_offld_prep(struct cnic_sock *csk)
 359 {
 360         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 361                 return 0;
 362
 363         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 364                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 365                 return 0;
 366         }
 367
 368         return 1;
 369 }
 370
 371 static int cnic_close_prep(struct cnic_sock *csk)
 372 {
 373         clear_bit(SK_F_CONNECT_START, &csk->flags);
 374         smp_mb__after_clear_bit();
 375
 376         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 377                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 378                         msleep(1);
 379
 380                 return 1;
 381         }
 382         return 0;
 383 }
 384
 385 static int cnic_abort_prep(struct cnic_sock *csk)
 386 {
 387         clear_bit(SK_F_CONNECT_START, &csk->flags);
 388         smp_mb__after_clear_bit();
 389
 390         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 391                 msleep(1);
 392
 393         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 394                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 395                 return 1;
 396         }
 397
 398         return 0;
 399 }
 400
 401 static void cnic_uio_stop(void)
 402 {
 403         struct cnic_dev *dev;
 404
 405         read_lock(&cnic_dev_lock);
 406         list_for_each_entry(dev, &cnic_dev_list, list) {
 407                 struct cnic_local *cp = dev->cnic_priv;
 408
 409                 if (cp->cnic_uinfo)
 410                         cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 411         }
 412         read_unlock(&cnic_dev_lock);
 413 }
 414
 415 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 416 {
 417         struct cnic_dev *dev;
 418
 419         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 420                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 421                 return -EINVAL;
 422         }
 423         mutex_lock(&cnic_lock);
 424         if (cnic_ulp_tbl[ulp_type]) {
 425                 pr_err("%s: Type %d has already been registered\n",
 426                        __func__, ulp_type);
 427                 mutex_unlock(&cnic_lock);
 428                 return -EBUSY;
 429         }
 430
 431         read_lock(&cnic_dev_lock);
 432         list_for_each_entry(dev, &cnic_dev_list, list) {
 433                 struct cnic_local *cp = dev->cnic_priv;
 434
 435                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 436         }
 437         read_unlock(&cnic_dev_lock);
 438
 439         atomic_set(&ulp_ops->ref_count, 0);
 440         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 441         mutex_unlock(&cnic_lock);
 442
 443         /* Prevent race conditions with netdev_event */
 444         rtnl_lock();
 445         read_lock(&cnic_dev_lock);
 446         list_for_each_entry(dev, &cnic_dev_list, list) {
 447                 struct cnic_local *cp = dev->cnic_priv;
 448
 449                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 450                         ulp_ops->cnic_init(dev);
 451         }
 452         read_unlock(&cnic_dev_lock);
 453         rtnl_unlock();
 454
 455         return 0;
 456 }
 457
 458 int cnic_unregister_driver(int ulp_type)
 459 {
 460         struct cnic_dev *dev;
 461         struct cnic_ulp_ops *ulp_ops;
 462         int i = 0;
 463
 464         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 465                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 466                 return -EINVAL;
 467         }
 468         mutex_lock(&cnic_lock);
 469         ulp_ops = cnic_ulp_tbl[ulp_type];
 470         if (!ulp_ops) {
 471                 pr_err("%s: Type %d has not been registered\n",
 472                        __func__, ulp_type);
 473                 goto out_unlock;
 474         }
 475         read_lock(&cnic_dev_lock);
 476         list_for_each_entry(dev, &cnic_dev_list, list) {
 477                 struct cnic_local *cp = dev->cnic_priv;
 478
 479                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 480                         pr_err("%s: Type %d still has devices registered\n",
 481                                __func__, ulp_type);
 482                         read_unlock(&cnic_dev_lock);
 483                         goto out_unlock;
 484                 }
 485         }
 486         read_unlock(&cnic_dev_lock);
 487
 488         if (ulp_type == CNIC_ULP_ISCSI)
 489                 cnic_uio_stop();
 490
 491         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
 492
 493         mutex_unlock(&cnic_lock);
 494         synchronize_rcu();
 495         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 496                 msleep(100);
 497                 i++;
 498         }
 499
 500         if (atomic_read(&ulp_ops->ref_count) != 0)
 501                 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
 502         return 0;
 503
 504 out_unlock:
 505         mutex_unlock(&cnic_lock);
 506         return -EINVAL;
 507 }
 508
 509 static int cnic_start_hw(struct cnic_dev *);
 510 static void cnic_stop_hw(struct cnic_dev *);
 511
 512 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 513                                 void *ulp_ctx)
 514 {
 515         struct cnic_local *cp = dev->cnic_priv;
 516         struct cnic_ulp_ops *ulp_ops;
 517
 518         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 519                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 520                 return -EINVAL;
 521         }
 522         mutex_lock(&cnic_lock);
 523         if (cnic_ulp_tbl[ulp_type] == NULL) {
 524                 pr_err("%s: Driver with type %d has not been registered\n",
 525                        __func__, ulp_type);
 526                 mutex_unlock(&cnic_lock);
 527                 return -EAGAIN;
 528         }
 529         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 530                 pr_err("%s: Type %d has already been registered to this device\n",
 531                        __func__, ulp_type);
 532                 mutex_unlock(&cnic_lock);
 533                 return -EBUSY;
 534         }
 535
 536         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 537         cp->ulp_handle[ulp_type] = ulp_ctx;
 538         ulp_ops = cnic_ulp_tbl[ulp_type];
 539         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 540         cnic_hold(dev);
 541
 542         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 543                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 544                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 545
 546         mutex_unlock(&cnic_lock);
 547
 548         return 0;
 549
 550 }
 551 EXPORT_SYMBOL(cnic_register_driver);
 552
 553 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 554 {
 555         struct cnic_local *cp = dev->cnic_priv;
 556         int i = 0;
 557
 558         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 559                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 560                 return -EINVAL;
 561         }
 562         mutex_lock(&cnic_lock);
 563         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 564                 rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
 565                 cnic_put(dev);
 566         } else {
 567                 pr_err("%s: device not registered to this ulp type %d\n",
 568                        __func__, ulp_type);
 569                 mutex_unlock(&cnic_lock);
 570                 return -EINVAL;
 571         }
 572         mutex_unlock(&cnic_lock);
 573
 574         synchronize_rcu();
 575
 576         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 577                i < 20) {
 578                 msleep(100);
 579                 i++;
 580         }
 581         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 582                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 583
 584         return 0;
 585 }
 586 EXPORT_SYMBOL(cnic_unregister_driver);
 587
 588 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
 589 {
 590         id_tbl->start = start_id;
 591         id_tbl->max = size;
 592         id_tbl->next = 0;
 593         spin_lock_init(&id_tbl->lock);
 594         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 595         if (!id_tbl->table)
 596                 return -ENOMEM;
 597
 598         return 0;
 599 }
 600
 601 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 602 {
 603         kfree(id_tbl->table);
 604         id_tbl->table = NULL;
 605 }
 606
 607 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 608 {
 609         int ret = -1;
 610
 611         id -= id_tbl->start;
 612         if (id >= id_tbl->max)
 613                 return ret;
 614
 615         spin_lock(&id_tbl->lock);
 616         if (!test_bit(id, id_tbl->table)) {
 617                 set_bit(id, id_tbl->table);
 618                 ret = 0;
 619         }
 620         spin_unlock(&id_tbl->lock);
 621         return ret;
 622 }
 623
 624 /* Returns -1 if not successful */
 625 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 626 {
 627         u32 id;
 628
 629         spin_lock(&id_tbl->lock);
 630         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 631         if (id >= id_tbl->max) {
 632                 id = -1;
 633                 if (id_tbl->next != 0) {
 634                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 635                         if (id >= id_tbl->next)
 636                                 id = -1;
 637                 }
 638         }
 639
 640         if (id < id_tbl->max) {
 641                 set_bit(id, id_tbl->table);
 642                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 643                 id += id_tbl->start;
 644         }
 645
 646         spin_unlock(&id_tbl->lock);
 647
 648         return id;
 649 }
 650
 651 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 652 {
 653         if (id == -1)
 654                 return;
 655
 656         id -= id_tbl->start;
 657         if (id >= id_tbl->max)
 658                 return;
 659
 660         clear_bit(id, id_tbl->table);
 661 }
 662
 663 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 664 {
 665         int i;
 666
 667         if (!dma->pg_arr)
 668                 return;
 669
 670         for (i = 0; i < dma->num_pages; i++) {
 671                 if (dma->pg_arr[i]) {
 672                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
 673                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 674                         dma->pg_arr[i] = NULL;
 675                 }
 676         }
 677         if (dma->pgtbl) {
 678                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 679                                   dma->pgtbl, dma->pgtbl_map);
 680                 dma->pgtbl = NULL;
 681         }
 682         kfree(dma->pg_arr);
 683         dma->pg_arr = NULL;
 684         dma->num_pages = 0;
 685 }
 686
 687 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 688 {
 689         int i;
 690         u32 *page_table = dma->pgtbl;
 691
 692         for (i = 0; i < dma->num_pages; i++) {
 693                 /* Each entry needs to be in big endian format. */
 694                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 695                 page_table++;
 696                 *page_table = (u32) dma->pg_map_arr[i];
 697                 page_table++;
 698         }
 699 }
 700
 701 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 702 {
 703         int i;
 704         u32 *page_table = dma->pgtbl;
 705
 706         for (i = 0; i < dma->num_pages; i++) {
 707                 /* Each entry needs to be in little endian format. */
 708                 *page_table = dma->pg_map_arr[i] & 0xffffffff;
 709                 page_table++;
 710                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 711                 page_table++;
 712         }
 713 }
 714
 715 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 716                           int pages, int use_pg_tbl)
 717 {
 718         int i, size;
 719         struct cnic_local *cp = dev->cnic_priv;
 720
 721         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 722         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 723         if (dma->pg_arr == NULL)
 724                 return -ENOMEM;
 725
 726         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 727         dma->num_pages = pages;
 728
 729         for (i = 0; i < pages; i++) {
 730                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 731                                                     BCM_PAGE_SIZE,
 732                                                     &dma->pg_map_arr[i],
 733                                                     GFP_ATOMIC);
 734                 if (dma->pg_arr[i] == NULL)
 735                         goto error;
 736         }
 737         if (!use_pg_tbl)
 738                 return 0;
 739
 740         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 741                           ~(BCM_PAGE_SIZE - 1);
 742         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 743                                         &dma->pgtbl_map, GFP_ATOMIC);
 744         if (dma->pgtbl == NULL)
 745                 goto error;
 746
 747         cp->setup_pgtbl(dev, dma);
 748
 749         return 0;
 750
 751 error:
 752         cnic_free_dma(dev, dma);
 753         return -ENOMEM;
 754 }
 755
 756 static void cnic_free_context(struct cnic_dev *dev)
 757 {
 758         struct cnic_local *cp = dev->cnic_priv;
 759         int i;
 760
 761         for (i = 0; i < cp->ctx_blks; i++) {
 762                 if (cp->ctx_arr[i].ctx) {
 763                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 764                                           cp->ctx_arr[i].ctx,
 765                                           cp->ctx_arr[i].mapping);
 766                         cp->ctx_arr[i].ctx = NULL;
 767                 }
 768         }
 769 }
 770
 771 static void cnic_free_resc(struct cnic_dev *dev)
 772 {
 773         struct cnic_local *cp = dev->cnic_priv;
 774         int i = 0;
 775
 776         if (cp->cnic_uinfo) {
 777                 while (cp->uio_dev != -1 && i < 15) {
 778                         msleep(100);
 779                         i++;
 780                 }
 781                 uio_unregister_device(cp->cnic_uinfo);
 782                 kfree(cp->cnic_uinfo);
 783                 cp->cnic_uinfo = NULL;
 784         }
 785
 786         if (cp->l2_buf) {
 787                 dma_free_coherent(&dev->pcidev->dev, cp->l2_buf_size,
 788                                   cp->l2_buf, cp->l2_buf_map);
 789                 cp->l2_buf = NULL;
 790         }
 791
 792         if (cp->l2_ring) {
 793                 dma_free_coherent(&dev->pcidev->dev, cp->l2_ring_size,
 794                                   cp->l2_ring, cp->l2_ring_map);
 795                 cp->l2_ring = NULL;
 796         }
 797
 798         cnic_free_context(dev);
 799         kfree(cp->ctx_arr);
 800         cp->ctx_arr = NULL;
 801         cp->ctx_blks = 0;
 802
 803         cnic_free_dma(dev, &cp->gbl_buf_info);
 804         cnic_free_dma(dev, &cp->conn_buf_info);
 805         cnic_free_dma(dev, &cp->kwq_info);
 806         cnic_free_dma(dev, &cp->kwq_16_data_info);
 807         cnic_free_dma(dev, &cp->kcq_info);
 808         kfree(cp->iscsi_tbl);
 809         cp->iscsi_tbl = NULL;
 810         kfree(cp->ctx_tbl);
 811         cp->ctx_tbl = NULL;
 812
 813         cnic_free_id_tbl(&cp->cid_tbl);
 814 }
 815
 816 static int cnic_alloc_context(struct cnic_dev *dev)
 817 {
 818         struct cnic_local *cp = dev->cnic_priv;
 819
 820         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 821                 int i, k, arr_size;
 822
 823                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 824                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 825                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 826                            sizeof(struct cnic_ctx);
 827                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 828                 if (cp->ctx_arr == NULL)
 829                         return -ENOMEM;
 830
 831                 k = 0;
 832                 for (i = 0; i < 2; i++) {
 833                         u32 j, reg, off, lo, hi;
 834
 835                         if (i == 0)
 836                                 off = BNX2_PG_CTX_MAP;
 837                         else
 838                                 off = BNX2_ISCSI_CTX_MAP;
 839
 840                         reg = cnic_reg_rd_ind(dev, off);
 841                         lo = reg >> 16;
 842                         hi = reg & 0xffff;
 843                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 844                                 cp->ctx_arr[k].cid = j;
 845                 }
 846
 847                 cp->ctx_blks = k;
 848                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 849                         cp->ctx_blks = 0;
 850                         return -ENOMEM;
 851                 }
 852
 853                 for (i = 0; i < cp->ctx_blks; i++) {
 854                         cp->ctx_arr[i].ctx =
 855                                 dma_alloc_coherent(&dev->pcidev->dev,
 856                                                    BCM_PAGE_SIZE,
 857                                                    &cp->ctx_arr[i].mapping,
 858                                                    GFP_KERNEL);
 859                         if (cp->ctx_arr[i].ctx == NULL)
 860                                 return -ENOMEM;
 861                 }
 862         }
 863         return 0;
 864 }
 865
 866 static int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages)
 867 {
 868         struct cnic_local *cp = dev->cnic_priv;
 869
 870         cp->l2_ring_size = pages * BCM_PAGE_SIZE;
 871         cp->l2_ring = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_ring_size,
 872                                          &cp->l2_ring_map,
 873                                          GFP_KERNEL | __GFP_COMP);
 874         if (!cp->l2_ring)
 875                 return -ENOMEM;
 876
 877         cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
 878         cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size);
 879         cp->l2_buf = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_buf_size,
 880                                         &cp->l2_buf_map,
 881                                         GFP_KERNEL | __GFP_COMP);
 882         if (!cp->l2_buf)
 883                 return -ENOMEM;
 884
 885         return 0;
 886 }
 887
 888 static int cnic_alloc_uio(struct cnic_dev *dev) {
 889         struct cnic_local *cp = dev->cnic_priv;
 890         struct uio_info *uinfo;
 891         int ret;
 892
 893         uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC);
 894         if (!uinfo)
 895                 return -ENOMEM;
 896
 897         uinfo->mem[0].addr = dev->netdev->base_addr;
 898         uinfo->mem[0].internal_addr = dev->regview;
 899         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
 900         uinfo->mem[0].memtype = UIO_MEM_PHYS;
 901
 902         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
 903                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
 904                         PAGE_MASK;
 905                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
 906                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
 907                 else
 908                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
 909
 910                 uinfo->name = "bnx2_cnic";
 911         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
 912                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
 913                         PAGE_MASK;
 914                 uinfo->mem[1].size = sizeof(struct host_def_status_block);
 915
 916                 uinfo->name = "bnx2x_cnic";
 917         }
 918
 919         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 920
 921         uinfo->mem[2].addr = (unsigned long) cp->l2_ring;
 922         uinfo->mem[2].size = cp->l2_ring_size;
 923         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
 924
 925         uinfo->mem[3].addr = (unsigned long) cp->l2_buf;
 926         uinfo->mem[3].size = cp->l2_buf_size;
 927         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
 928
 929         uinfo->version = CNIC_MODULE_VERSION;
 930         uinfo->irq = UIO_IRQ_CUSTOM;
 931
 932         uinfo->open = cnic_uio_open;
 933         uinfo->release = cnic_uio_close;
 934
 935         uinfo->priv = dev;
 936
 937         ret = uio_register_device(&dev->pcidev->dev, uinfo);
 938         if (ret) {
 939                 kfree(uinfo);
 940                 return ret;
 941         }
 942
 943         cp->cnic_uinfo = uinfo;
 944         return 0;
 945 }
 946
 947 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
 948 {
 949         struct cnic_local *cp = dev->cnic_priv;
 950         int ret;
 951
 952         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
 953         if (ret)
 954                 goto error;
 955         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
 956
 957         ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1);
 958         if (ret)
 959                 goto error;
 960         cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
 961
 962         ret = cnic_alloc_context(dev);
 963         if (ret)
 964                 goto error;
 965
 966         ret = cnic_alloc_l2_rings(dev, 2);
 967         if (ret)
 968                 goto error;
 969
 970         ret = cnic_alloc_uio(dev);
 971         if (ret)
 972                 goto error;
 973
 974         return 0;
 975
 976 error:
 977         cnic_free_resc(dev);
 978         return ret;
 979 }
 980
 981 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
 982 {
 983         struct cnic_local *cp = dev->cnic_priv;
 984         int ctx_blk_size = cp->ethdev->ctx_blk_size;
 985         int total_mem, blks, i;
 986
 987         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
 988         blks = total_mem / ctx_blk_size;
 989         if (total_mem % ctx_blk_size)
 990                 blks++;
 991
 992         if (blks > cp->ethdev->ctx_tbl_len)
 993                 return -ENOMEM;
 994
 995         cp->ctx_arr = kzalloc(blks * sizeof(struct cnic_ctx), GFP_KERNEL);
 996         if (cp->ctx_arr == NULL)
 997                 return -ENOMEM;
 998
 999         cp->ctx_blks = blks;
1000         cp->ctx_blk_size = ctx_blk_size;
1001         if (BNX2X_CHIP_IS_E1H(cp->chip_id))
1002                 cp->ctx_align = 0;
1003         else
1004                 cp->ctx_align = ctx_blk_size;
1005
1006         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1007
1008         for (i = 0; i < blks; i++) {
1009                 cp->ctx_arr[i].ctx =
1010                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1011                                            &cp->ctx_arr[i].mapping,
1012                                            GFP_KERNEL);
1013                 if (cp->ctx_arr[i].ctx == NULL)
1014                         return -ENOMEM;
1015
1016                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1017                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1018                                 cnic_free_context(dev);
1019                                 cp->ctx_blk_size += cp->ctx_align;
1020                                 i = -1;
1021                                 continue;
1022                         }
1023                 }
1024         }
1025         return 0;
1026 }
1027
1028 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1029 {
1030         struct cnic_local *cp = dev->cnic_priv;
1031         struct cnic_eth_dev *ethdev = cp->ethdev;
1032         u32 start_cid = ethdev->starting_cid;
1033         int i, j, n, ret, pages;
1034         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1035
1036         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1037         cp->iscsi_start_cid = start_cid;
1038         if (start_cid < BNX2X_ISCSI_START_CID) {
1039                 u32 delta = BNX2X_ISCSI_START_CID - start_cid;
1040
1041                 cp->iscsi_start_cid = BNX2X_ISCSI_START_CID;
1042                 cp->max_cid_space += delta;
1043         }
1044
1045         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1046                                 GFP_KERNEL);
1047         if (!cp->iscsi_tbl)
1048                 goto error;
1049
1050         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1051                                 cp->max_cid_space, GFP_KERNEL);
1052         if (!cp->ctx_tbl)
1053                 goto error;
1054
1055         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1056                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1057                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1058         }
1059
1060         pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1061                 PAGE_SIZE;
1062
1063         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1064         if (ret)
1065                 return -ENOMEM;
1066
1067         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1068         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1069                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1070
1071                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1072                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1073                                                    off;
1074
1075                 if ((i % n) == (n - 1))
1076                         j++;
1077         }
1078
1079         ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 0);
1080         if (ret)
1081                 goto error;
1082         cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
1083
1084         for (i = 0; i < KCQ_PAGE_CNT; i++) {
1085                 struct bnx2x_bd_chain_next *next =
1086                         (struct bnx2x_bd_chain_next *)
1087                         &cp->kcq[i][MAX_KCQE_CNT];
1088                 int j = i + 1;
1089
1090                 if (j >= KCQ_PAGE_CNT)
1091                         j = 0;
1092                 next->addr_hi = (u64) cp->kcq_info.pg_map_arr[j] >> 32;
1093                 next->addr_lo = cp->kcq_info.pg_map_arr[j] & 0xffffffff;
1094         }
1095
1096         pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
1097                            BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
1098         ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
1099         if (ret)
1100                 goto error;
1101
1102         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1103         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1104         if (ret)
1105                 goto error;
1106
1107         ret = cnic_alloc_bnx2x_context(dev);
1108         if (ret)
1109                 goto error;
1110
1111         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1112
1113         memset(cp->status_blk.bnx2x, 0, sizeof(*cp->status_blk.bnx2x));
1114
1115         cp->l2_rx_ring_size = 15;
1116
1117         ret = cnic_alloc_l2_rings(dev, 4);
1118         if (ret)
1119                 goto error;
1120
1121         ret = cnic_alloc_uio(dev);
1122         if (ret)
1123                 goto error;
1124
1125         return 0;
1126
1127 error:
1128         cnic_free_resc(dev);
1129         return -ENOMEM;
1130 }
1131
1132 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1133 {
1134         return cp->max_kwq_idx -
1135                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1136 }
1137
1138 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1139                                   u32 num_wqes)
1140 {
1141         struct cnic_local *cp = dev->cnic_priv;
1142         struct kwqe *prod_qe;
1143         u16 prod, sw_prod, i;
1144
1145         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1146                 return -EAGAIN;         /* bnx2 is down */
1147
1148         spin_lock_bh(&cp->cnic_ulp_lock);
1149         if (num_wqes > cnic_kwq_avail(cp) &&
1150             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1151                 spin_unlock_bh(&cp->cnic_ulp_lock);
1152                 return -EAGAIN;
1153         }
1154
1155         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1156
1157         prod = cp->kwq_prod_idx;
1158         sw_prod = prod & MAX_KWQ_IDX;
1159         for (i = 0; i < num_wqes; i++) {
1160                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1161                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1162                 prod++;
1163                 sw_prod = prod & MAX_KWQ_IDX;
1164         }
1165         cp->kwq_prod_idx = prod;
1166
1167         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1168
1169         spin_unlock_bh(&cp->cnic_ulp_lock);
1170         return 0;
1171 }
1172
1173 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1174                                    union l5cm_specific_data *l5_data)
1175 {
1176         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1177         dma_addr_t map;
1178
1179         map = ctx->kwqe_data_mapping;
1180         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1181         l5_data->phy_address.hi = (u64) map >> 32;
1182         return ctx->kwqe_data;
1183 }
1184
1185 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1186                                 u32 type, union l5cm_specific_data *l5_data)
1187 {
1188         struct cnic_local *cp = dev->cnic_priv;
1189         struct l5cm_spe kwqe;
1190         struct kwqe_16 *kwq[1];
1191         int ret;
1192
1193         kwqe.hdr.conn_and_cmd_data =
1194                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1195                              BNX2X_HW_CID(cid, cp->func)));
1196         kwqe.hdr.type = cpu_to_le16(type);
1197         kwqe.hdr.reserved = 0;
1198         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1199         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1200
1201         kwq[0] = (struct kwqe_16 *) &kwqe;
1202
1203         spin_lock_bh(&cp->cnic_ulp_lock);
1204         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1205         spin_unlock_bh(&cp->cnic_ulp_lock);
1206
1207         if (ret == 1)
1208                 return 0;
1209
1210         return -EBUSY;
1211 }
1212
1213 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1214                                    struct kcqe *cqes[], u32 num_cqes)
1215 {
1216         struct cnic_local *cp = dev->cnic_priv;
1217         struct cnic_ulp_ops *ulp_ops;
1218
1219         rcu_read_lock();
1220         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1221         if (likely(ulp_ops)) {
1222                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1223                                           cqes, num_cqes);
1224         }
1225         rcu_read_unlock();
1226 }
1227
1228 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1229 {
1230         struct cnic_local *cp = dev->cnic_priv;
1231         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1232         int func = cp->func, pages;
1233         int hq_bds;
1234
1235         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1236         cp->num_ccells = req1->num_ccells_per_conn;
1237         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1238                               cp->num_iscsi_tasks;
1239         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1240                         BNX2X_ISCSI_R2TQE_SIZE;
1241         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1242         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1243         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1244         cp->num_cqs = req1->num_cqs;
1245
1246         if (!dev->max_iscsi_conn)
1247                 return 0;
1248
1249         /* init Tstorm RAM */
1250         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(func),
1251                   req1->rq_num_wqes);
1252         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1253                   PAGE_SIZE);
1254         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1255                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1256         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1257                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1258                   req1->num_tasks_per_conn);
1259
1260         /* init Ustorm RAM */
1261         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1262                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(func),
1263                   req1->rq_buffer_size);
1264         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1265                   PAGE_SIZE);
1266         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1267                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1268         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1269                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1270                   req1->num_tasks_per_conn);
1271         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(func),
1272                   req1->rq_num_wqes);
1273         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(func),
1274                   req1->cq_num_wqes);
1275         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1276                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1277
1278         /* init Xstorm RAM */
1279         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1280                   PAGE_SIZE);
1281         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1282                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1283         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1284                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1285                   req1->num_tasks_per_conn);
1286         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1287                   hq_bds);
1288         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(func),
1289                   req1->num_tasks_per_conn);
1290         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1291                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1292
1293         /* init Cstorm RAM */
1294         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1295                   PAGE_SIZE);
1296         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1297                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1298         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1299                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1300                   req1->num_tasks_per_conn);
1301         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(func),
1302                   req1->cq_num_wqes);
1303         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1304                   hq_bds);
1305
1306         return 0;
1307 }
1308
1309 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1310 {
1311         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1312         struct cnic_local *cp = dev->cnic_priv;
1313         int func = cp->func;
1314         struct iscsi_kcqe kcqe;
1315         struct kcqe *cqes[1];
1316
1317         memset(&kcqe, 0, sizeof(kcqe));
1318         if (!dev->max_iscsi_conn) {
1319                 kcqe.completion_status =
1320                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1321                 goto done;
1322         }
1323
1324         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1325                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1326         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1327                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1328                 req2->error_bit_map[1]);
1329
1330         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1331                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1332         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1333                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1334         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1335                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1336                 req2->error_bit_map[1]);
1337
1338         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1339                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1340
1341         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1342
1343 done:
1344         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1345         cqes[0] = (struct kcqe *) &kcqe;
1346         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1347
1348         return 0;
1349 }
1350
1351 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1352 {
1353         struct cnic_local *cp = dev->cnic_priv;
1354         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1355
1356         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1357                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1358
1359                 cnic_free_dma(dev, &iscsi->hq_info);
1360                 cnic_free_dma(dev, &iscsi->r2tq_info);
1361                 cnic_free_dma(dev, &iscsi->task_array_info);
1362         }
1363         cnic_free_id(&cp->cid_tbl, ctx->cid);
1364         ctx->cid = 0;
1365 }
1366
1367 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1368 {
1369         u32 cid;
1370         int ret, pages;
1371         struct cnic_local *cp = dev->cnic_priv;
1372         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1373         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1374
1375         cid = cnic_alloc_new_id(&cp->cid_tbl);
1376         if (cid == -1) {
1377                 ret = -ENOMEM;
1378                 goto error;
1379         }
1380
1381         ctx->cid = cid;
1382         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1383
1384         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1385         if (ret)
1386                 goto error;
1387
1388         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1389         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1390         if (ret)
1391                 goto error;
1392
1393         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1394         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1395         if (ret)
1396                 goto error;
1397
1398         return 0;
1399
1400 error:
1401         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1402         return ret;
1403 }
1404
1405 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1406                                 struct regpair *ctx_addr)
1407 {
1408         struct cnic_local *cp = dev->cnic_priv;
1409         struct cnic_eth_dev *ethdev = cp->ethdev;
1410         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1411         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1412         unsigned long align_off = 0;
1413         dma_addr_t ctx_map;
1414         void *ctx;
1415
1416         if (cp->ctx_align) {
1417                 unsigned long mask = cp->ctx_align - 1;
1418
1419                 if (cp->ctx_arr[blk].mapping & mask)
1420                         align_off = cp->ctx_align -
1421                                     (cp->ctx_arr[blk].mapping & mask);
1422         }
1423         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1424                 (off * BNX2X_CONTEXT_MEM_SIZE);
1425         ctx = cp->ctx_arr[blk].ctx + align_off +
1426               (off * BNX2X_CONTEXT_MEM_SIZE);
1427         if (init)
1428                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1429
1430         ctx_addr->lo = ctx_map & 0xffffffff;
1431         ctx_addr->hi = (u64) ctx_map >> 32;
1432         return ctx;
1433 }
1434
1435 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1436                                 u32 num)
1437 {
1438         struct cnic_local *cp = dev->cnic_priv;
1439         struct iscsi_kwqe_conn_offload1 *req1 =
1440                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1441         struct iscsi_kwqe_conn_offload2 *req2 =
1442                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1443         struct iscsi_kwqe_conn_offload3 *req3;
1444         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1445         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1446         u32 cid = ctx->cid;
1447         u32 hw_cid = BNX2X_HW_CID(cid, cp->func);
1448         struct iscsi_context *ictx;
1449         struct regpair context_addr;
1450         int i, j, n = 2, n_max;
1451
1452         ctx->ctx_flags = 0;
1453         if (!req2->num_additional_wqes)
1454                 return -EINVAL;
1455
1456         n_max = req2->num_additional_wqes + 2;
1457
1458         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1459         if (ictx == NULL)
1460                 return -ENOMEM;
1461
1462         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1463
1464         ictx->xstorm_ag_context.hq_prod = 1;
1465
1466         ictx->xstorm_st_context.iscsi.first_burst_length =
1467                 ISCSI_DEF_FIRST_BURST_LEN;
1468         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1469                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1470         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1471                 req1->sq_page_table_addr_lo;
1472         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1473                 req1->sq_page_table_addr_hi;
1474         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1475         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1476         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1477                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1478         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1479                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1480         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1481                 iscsi->hq_info.pgtbl[0];
1482         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1483                 iscsi->hq_info.pgtbl[1];
1484         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1485                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1486         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1487                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1488         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1489                 iscsi->r2tq_info.pgtbl[0];
1490         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1491                 iscsi->r2tq_info.pgtbl[1];
1492         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1493                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1494         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1495                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1496         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1497                 BNX2X_ISCSI_PBL_NOT_CACHED;
1498         ictx->xstorm_st_context.iscsi.flags.flags |=
1499                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1500         ictx->xstorm_st_context.iscsi.flags.flags |=
1501                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1502
1503         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1504         /* TSTORM requires the base address of RQ DB & not PTE */
1505         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1506                 req2->rq_page_table_addr_lo & PAGE_MASK;
1507         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1508                 req2->rq_page_table_addr_hi;
1509         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1510         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1511         ictx->tstorm_st_context.tcp.flags2 |=
1512                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1513
1514         ictx->timers_context.flags |= ISCSI_TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1515
1516         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1517                 req2->rq_page_table_addr_lo;
1518         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1519                 req2->rq_page_table_addr_hi;
1520         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1521         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1522         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1523                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1524         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1525                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1526         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1527                 iscsi->r2tq_info.pgtbl[0];
1528         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1529                 iscsi->r2tq_info.pgtbl[1];
1530         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1531                 req1->cq_page_table_addr_lo;
1532         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1533                 req1->cq_page_table_addr_hi;
1534         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1535         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1536         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1537         ictx->ustorm_st_context.task_pbe_cache_index =
1538                 BNX2X_ISCSI_PBL_NOT_CACHED;
1539         ictx->ustorm_st_context.task_pdu_cache_index =
1540                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1541
1542         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1543                 if (j == 3) {
1544                         if (n >= n_max)
1545                                 break;
1546                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1547                         j = 0;
1548                 }
1549                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1550                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1551                         req3->qp_first_pte[j].hi;
1552                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1553                         req3->qp_first_pte[j].lo;
1554         }
1555
1556         ictx->ustorm_st_context.task_pbl_base.lo =
1557                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1558         ictx->ustorm_st_context.task_pbl_base.hi =
1559                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1560         ictx->ustorm_st_context.tce_phy_addr.lo =
1561                 iscsi->task_array_info.pgtbl[0];
1562         ictx->ustorm_st_context.tce_phy_addr.hi =
1563                 iscsi->task_array_info.pgtbl[1];
1564         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1565         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1566         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1567         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1568                 ISCSI_DEF_MAX_BURST_LEN;
1569         ictx->ustorm_st_context.negotiated_rx |=
1570                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1571                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1572
1573         ictx->cstorm_st_context.hq_pbl_base.lo =
1574                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1575         ictx->cstorm_st_context.hq_pbl_base.hi =
1576                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1577         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1578         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1579         ictx->cstorm_st_context.task_pbl_base.lo =
1580                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1581         ictx->cstorm_st_context.task_pbl_base.hi =
1582                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1583         /* CSTORM and USTORM initialization is different, CSTORM requires
1584          * CQ DB base & not PTE addr */
1585         ictx->cstorm_st_context.cq_db_base.lo =
1586                 req1->cq_page_table_addr_lo & PAGE_MASK;
1587         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1588         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1589         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1590         for (i = 0; i < cp->num_cqs; i++) {
1591                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1592                         ISCSI_INITIAL_SN;
1593                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1594                         ISCSI_INITIAL_SN;
1595         }
1596
1597         ictx->xstorm_ag_context.cdu_reserved =
1598                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1599                                        ISCSI_CONNECTION_TYPE);
1600         ictx->ustorm_ag_context.cdu_usage =
1601                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1602                                        ISCSI_CONNECTION_TYPE);
1603         return 0;
1604
1605 }
1606
1607 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1608                                    u32 num, int *work)
1609 {
1610         struct iscsi_kwqe_conn_offload1 *req1;
1611         struct iscsi_kwqe_conn_offload2 *req2;
1612         struct cnic_local *cp = dev->cnic_priv;
1613         struct iscsi_kcqe kcqe;
1614         struct kcqe *cqes[1];
1615         u32 l5_cid;
1616         int ret;
1617
1618         if (num < 2) {
1619                 *work = num;
1620                 return -EINVAL;
1621         }
1622
1623         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1624         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1625         if ((num - 2) < req2->num_additional_wqes) {
1626                 *work = num;
1627                 return -EINVAL;
1628         }
1629         *work = 2 + req2->num_additional_wqes;;
1630
1631         l5_cid = req1->iscsi_conn_id;
1632         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1633                 return -EINVAL;
1634
1635         memset(&kcqe, 0, sizeof(kcqe));
1636         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1637         kcqe.iscsi_conn_id = l5_cid;
1638         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1639
1640         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1641                 atomic_dec(&cp->iscsi_conn);
1642                 ret = 0;
1643                 goto done;
1644         }
1645         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1646         if (ret) {
1647                 atomic_dec(&cp->iscsi_conn);
1648                 ret = 0;
1649                 goto done;
1650         }
1651         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1652         if (ret < 0) {
1653                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1654                 atomic_dec(&cp->iscsi_conn);
1655                 goto done;
1656         }
1657
1658         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1659         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp->ctx_tbl[l5_cid].cid,
1660                                                   cp->func);
1661
1662 done:
1663         cqes[0] = (struct kcqe *) &kcqe;
1664         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1665         return ret;
1666 }
1667
1668
1669 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1670 {
1671         struct cnic_local *cp = dev->cnic_priv;
1672         struct iscsi_kwqe_conn_update *req =
1673                 (struct iscsi_kwqe_conn_update *) kwqe;
1674         void *data;
1675         union l5cm_specific_data l5_data;
1676         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1677         int ret;
1678
1679         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1680                 return -EINVAL;
1681
1682         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1683         if (!data)
1684                 return -ENOMEM;
1685
1686         memcpy(data, kwqe, sizeof(struct kwqe));
1687
1688         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1689                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1690         return ret;
1691 }
1692
1693 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1694 {
1695         struct cnic_local *cp = dev->cnic_priv;
1696         struct iscsi_kwqe_conn_destroy *req =
1697                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1698         union l5cm_specific_data l5_data;
1699         u32 l5_cid = req->reserved0;
1700         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1701         int ret = 0;
1702         struct iscsi_kcqe kcqe;
1703         struct kcqe *cqes[1];
1704
1705         if (!(ctx->ctx_flags & CTX_FL_OFFLD_START))
1706                 goto skip_cfc_delete;
1707
1708         while (!time_after(jiffies, ctx->timestamp + (2 * HZ)))
1709                 msleep(250);
1710
1711         init_waitqueue_head(&ctx->waitq);
1712         ctx->wait_cond = 0;
1713         memset(&l5_data, 0, sizeof(l5_data));
1714         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
1715                                   req->context_id,
1716                                   ETH_CONNECTION_TYPE |
1717                                   (1 << SPE_HDR_COMMON_RAMROD_SHIFT),
1718                                   &l5_data);
1719         if (ret == 0)
1720                 wait_event(ctx->waitq, ctx->wait_cond);
1721
1722 skip_cfc_delete:
1723         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1724
1725         atomic_dec(&cp->iscsi_conn);
1726
1727         memset(&kcqe, 0, sizeof(kcqe));
1728         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1729         kcqe.iscsi_conn_id = l5_cid;
1730         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1731         kcqe.iscsi_conn_context_id = req->context_id;
1732
1733         cqes[0] = (struct kcqe *) &kcqe;
1734         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1735
1736         return ret;
1737 }
1738
1739 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1740                                       struct l4_kwq_connect_req1 *kwqe1,
1741                                       struct l4_kwq_connect_req3 *kwqe3,
1742                                       struct l5cm_active_conn_buffer *conn_buf)
1743 {
1744         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1745         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1746                 &conn_buf->xstorm_conn_buffer;
1747         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1748                 &conn_buf->tstorm_conn_buffer;
1749         struct regpair context_addr;
1750         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1751         struct in6_addr src_ip, dst_ip;
1752         int i;
1753         u32 *addrp;
1754
1755         addrp = (u32 *) &conn_addr->local_ip_addr;
1756         for (i = 0; i < 4; i++, addrp++)
1757                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1758
1759         addrp = (u32 *) &conn_addr->remote_ip_addr;
1760         for (i = 0; i < 4; i++, addrp++)
1761                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1762
1763         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1764
1765         xstorm_buf->context_addr.hi = context_addr.hi;
1766         xstorm_buf->context_addr.lo = context_addr.lo;
1767         xstorm_buf->mss = 0xffff;
1768         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1769         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1770                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1771         xstorm_buf->pseudo_header_checksum =
1772                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1773
1774         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1775                 tstorm_buf->params |=
1776                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1777         if (kwqe3->ka_timeout) {
1778                 tstorm_buf->ka_enable = 1;
1779                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1780                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1781                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1782         }
1783         tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1784         tstorm_buf->snd_buf = kwqe3->snd_buf;
1785         tstorm_buf->max_rt_time = 0xffffffff;
1786 }
1787
1788 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1789 {
1790         struct cnic_local *cp = dev->cnic_priv;
1791         int func = CNIC_FUNC(cp);
1792         u8 *mac = dev->mac_addr;
1793
1794         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1795                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(func), mac[0]);
1796         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1797                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(func), mac[1]);
1798         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1799                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(func), mac[2]);
1800         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1801                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(func), mac[3]);
1802         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1803                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(func), mac[4]);
1804         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1805                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(func), mac[5]);
1806
1807         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1808                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func), mac[5]);
1809         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1810                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1811                  mac[4]);
1812         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1813                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func), mac[3]);
1814         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1815                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1816                  mac[2]);
1817         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1818                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 2,
1819                  mac[1]);
1820         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1821                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 3,
1822                  mac[0]);
1823 }
1824
1825 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1826 {
1827         struct cnic_local *cp = dev->cnic_priv;
1828         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1829         u16 tstorm_flags = 0;
1830
1831         if (tcp_ts) {
1832                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1833                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1834         }
1835
1836         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1837                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), xstorm_flags);
1838
1839         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1840                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), tstorm_flags);
1841 }
1842
1843 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
1844                               u32 num, int *work)
1845 {
1846         struct cnic_local *cp = dev->cnic_priv;
1847         struct l4_kwq_connect_req1 *kwqe1 =
1848                 (struct l4_kwq_connect_req1 *) wqes[0];
1849         struct l4_kwq_connect_req3 *kwqe3;
1850         struct l5cm_active_conn_buffer *conn_buf;
1851         struct l5cm_conn_addr_params *conn_addr;
1852         union l5cm_specific_data l5_data;
1853         u32 l5_cid = kwqe1->pg_cid;
1854         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
1855         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1856         int ret;
1857
1858         if (num < 2) {
1859                 *work = num;
1860                 return -EINVAL;
1861         }
1862
1863         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
1864                 *work = 3;
1865         else
1866                 *work = 2;
1867
1868         if (num < *work) {
1869                 *work = num;
1870                 return -EINVAL;
1871         }
1872
1873         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
1874                 netdev_err(dev->netdev, "conn_buf size too big\n");
1875                 return -ENOMEM;
1876         }
1877         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1878         if (!conn_buf)
1879                 return -ENOMEM;
1880
1881         memset(conn_buf, 0, sizeof(*conn_buf));
1882
1883         conn_addr = &conn_buf->conn_addr_buf;
1884         conn_addr->remote_addr_0 = csk->ha[0];
1885         conn_addr->remote_addr_1 = csk->ha[1];
1886         conn_addr->remote_addr_2 = csk->ha[2];
1887         conn_addr->remote_addr_3 = csk->ha[3];
1888         conn_addr->remote_addr_4 = csk->ha[4];
1889         conn_addr->remote_addr_5 = csk->ha[5];
1890
1891         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
1892                 struct l4_kwq_connect_req2 *kwqe2 =
1893                         (struct l4_kwq_connect_req2 *) wqes[1];
1894
1895                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
1896                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
1897                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
1898
1899                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
1900                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
1901                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
1902                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
1903         }
1904         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
1905
1906         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
1907         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
1908         conn_addr->local_tcp_port = kwqe1->src_port;
1909         conn_addr->remote_tcp_port = kwqe1->dst_port;
1910
1911         conn_addr->pmtu = kwqe3->pmtu;
1912         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
1913
1914         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1915                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->func), csk->vlan_id);
1916
1917         cnic_bnx2x_set_tcp_timestamp(dev,
1918                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
1919
1920         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
1921                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1922         if (!ret)
1923                 ctx->ctx_flags |= CTX_FL_OFFLD_START;
1924
1925         return ret;
1926 }
1927
1928 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
1929 {
1930         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
1931         union l5cm_specific_data l5_data;
1932         int ret;
1933
1934         memset(&l5_data, 0, sizeof(l5_data));
1935         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
1936                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1937         return ret;
1938 }
1939
1940 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
1941 {
1942         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
1943         union l5cm_specific_data l5_data;
1944         int ret;
1945
1946         memset(&l5_data, 0, sizeof(l5_data));
1947         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
1948                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1949         return ret;
1950 }
1951 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1952 {
1953         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
1954         struct l4_kcq kcqe;
1955         struct kcqe *cqes[1];
1956
1957         memset(&kcqe, 0, sizeof(kcqe));
1958         kcqe.pg_host_opaque = req->host_opaque;
1959         kcqe.pg_cid = req->host_opaque;
1960         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
1961         cqes[0] = (struct kcqe *) &kcqe;
1962         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1963         return 0;
1964 }
1965
1966 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1967 {
1968         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
1969         struct l4_kcq kcqe;
1970         struct kcqe *cqes[1];
1971
1972         memset(&kcqe, 0, sizeof(kcqe));
1973         kcqe.pg_host_opaque = req->pg_host_opaque;
1974         kcqe.pg_cid = req->pg_cid;
1975         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
1976         cqes[0] = (struct kcqe *) &kcqe;
1977         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1978         return 0;
1979 }
1980
1981 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1982                                    u32 num_wqes)
1983 {
1984         int i, work, ret;
1985         u32 opcode;
1986         struct kwqe *kwqe;
1987
1988         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1989                 return -EAGAIN;         /* bnx2 is down */
1990
1991         for (i = 0; i < num_wqes; ) {
1992                 kwqe = wqes[i];
1993                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
1994                 work = 1;
1995
1996                 switch (opcode) {
1997                 case ISCSI_KWQE_OPCODE_INIT1:
1998                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
1999                         break;
2000                 case ISCSI_KWQE_OPCODE_INIT2:
2001                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2002                         break;
2003                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2004                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2005                                                      num_wqes - i, &work);
2006                         break;
2007                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2008                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2009                         break;
2010                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2011                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2012                         break;
2013                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2014                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2015                                                  &work);
2016                         break;
2017                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2018                         ret = cnic_bnx2x_close(dev, kwqe);
2019                         break;
2020                 case L4_KWQE_OPCODE_VALUE_RESET:
2021                         ret = cnic_bnx2x_reset(dev, kwqe);
2022                         break;
2023                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2024                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2025                         break;
2026                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2027                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2028                         break;
2029                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2030                         ret = 0;
2031                         break;
2032                 default:
2033                         ret = 0;
2034                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2035                                    opcode);
2036                         break;
2037                 }
2038                 if (ret < 0)
2039                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2040                                    opcode);
2041                 i += work;
2042         }
2043         return 0;
2044 }
2045
2046 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2047 {
2048         struct cnic_local *cp = dev->cnic_priv;
2049         int i, j;
2050
2051         i = 0;
2052         j = 1;
2053         while (num_cqes) {
2054                 struct cnic_ulp_ops *ulp_ops;
2055                 int ulp_type;
2056                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2057                 u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;
2058
2059                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2060                         cnic_kwq_completion(dev, 1);
2061
2062                 while (j < num_cqes) {
2063                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2064
2065                         if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
2066                                 break;
2067
2068                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2069                                 cnic_kwq_completion(dev, 1);
2070                         j++;
2071                 }
2072
2073                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2074                         ulp_type = CNIC_ULP_RDMA;
2075                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2076                         ulp_type = CNIC_ULP_ISCSI;
2077                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2078                         ulp_type = CNIC_ULP_L4;
2079                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2080                         goto end;
2081                 else {
2082                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2083                                    kcqe_op_flag);
2084                         goto end;
2085                 }
2086
2087                 rcu_read_lock();
2088                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2089                 if (likely(ulp_ops)) {
2090                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2091                                                   cp->completed_kcq + i, j);
2092                 }
2093                 rcu_read_unlock();
2094 end:
2095                 num_cqes -= j;
2096                 i += j;
2097                 j = 1;
2098         }
2099 }
2100
2101 static u16 cnic_bnx2_next_idx(u16 idx)
2102 {
2103         return idx + 1;
2104 }
2105
2106 static u16 cnic_bnx2_hw_idx(u16 idx)
2107 {
2108         return idx;
2109 }
2110
2111 static u16 cnic_bnx2x_next_idx(u16 idx)
2112 {
2113         idx++;
2114         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2115                 idx++;
2116
2117         return idx;
2118 }
2119
2120 static u16 cnic_bnx2x_hw_idx(u16 idx)
2121 {
2122         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2123                 idx++;
2124         return idx;
2125 }
2126
2127 static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
2128 {
2129         struct cnic_local *cp = dev->cnic_priv;
2130         u16 i, ri, last;
2131         struct kcqe *kcqe;
2132         int kcqe_cnt = 0, last_cnt = 0;
2133
2134         i = ri = last = *sw_prod;
2135         ri &= MAX_KCQ_IDX;
2136
2137         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2138                 kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2139                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2140                 i = cp->next_idx(i);
2141                 ri = i & MAX_KCQ_IDX;
2142                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2143                         last_cnt = kcqe_cnt;
2144                         last = i;
2145                 }
2146         }
2147
2148         *sw_prod = last;
2149         return last_cnt;
2150 }
2151
2152 static int cnic_l2_completion(struct cnic_local *cp)
2153 {
2154         u16 hw_cons, sw_cons;
2155         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2156                                         (cp->l2_ring + (2 * BCM_PAGE_SIZE));
2157         u32 cmd;
2158         int comp = 0;
2159
2160         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2161                 return 0;
2162
2163         hw_cons = *cp->rx_cons_ptr;
2164         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2165                 hw_cons++;
2166
2167         sw_cons = cp->rx_cons;
2168         while (sw_cons != hw_cons) {
2169                 u8 cqe_fp_flags;
2170
2171                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2172                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2173                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2174                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2175                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2176                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2177                             cmd == RAMROD_CMD_ID_ETH_HALT)
2178                                 comp++;
2179                 }
2180                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2181         }
2182         return comp;
2183 }
2184
2185 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2186 {
2187         u16 rx_cons = *cp->rx_cons_ptr;
2188         u16 tx_cons = *cp->tx_cons_ptr;
2189         int comp = 0;
2190
2191         if (!test_bit(CNIC_F_CNIC_UP, &cp->dev->flags))
2192                 return;
2193
2194         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2195                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2196                         comp = cnic_l2_completion(cp);
2197
2198                 cp->tx_cons = tx_cons;
2199                 cp->rx_cons = rx_cons;
2200
2201                 uio_event_notify(cp->cnic_uinfo);
2202         }
2203         if (comp)
2204                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2205 }
2206
2207 static int cnic_service_bnx2(void *data, void *status_blk)
2208 {
2209         struct cnic_dev *dev = data;
2210         struct status_block *sblk = status_blk;
2211         struct cnic_local *cp = dev->cnic_priv;
2212         u32 status_idx = sblk->status_idx;
2213         u16 hw_prod, sw_prod;
2214         int kcqe_cnt;
2215
2216         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2217                 return status_idx;
2218
2219         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2220
2221         hw_prod = sblk->status_completion_producer_index;
2222         sw_prod = cp->kcq_prod_idx;
2223         while (sw_prod != hw_prod) {
2224                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2225                 if (kcqe_cnt == 0)
2226                         goto done;
2227
2228                 service_kcqes(dev, kcqe_cnt);
2229
2230                 /* Tell compiler that status_blk fields can change. */
2231                 barrier();
2232                 if (status_idx != sblk->status_idx) {
2233                         status_idx = sblk->status_idx;
2234                         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2235                         hw_prod = sblk->status_completion_producer_index;
2236                 } else
2237                         break;
2238         }
2239
2240 done:
2241         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2242
2243         cp->kcq_prod_idx = sw_prod;
2244
2245         cnic_chk_pkt_rings(cp);
2246         return status_idx;
2247 }
2248
2249 static void cnic_service_bnx2_msix(unsigned long data)
2250 {
2251         struct cnic_dev *dev = (struct cnic_dev *) data;
2252         struct cnic_local *cp = dev->cnic_priv;
2253         struct status_block_msix *status_blk = cp->status_blk.bnx2;
2254         u32 status_idx = status_blk->status_idx;
2255         u16 hw_prod, sw_prod;
2256         int kcqe_cnt;
2257
2258         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2259
2260         hw_prod = status_blk->status_completion_producer_index;
2261         sw_prod = cp->kcq_prod_idx;
2262         while (sw_prod != hw_prod) {
2263                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2264                 if (kcqe_cnt == 0)
2265                         goto done;
2266
2267                 service_kcqes(dev, kcqe_cnt);
2268
2269                 /* Tell compiler that status_blk fields can change. */
2270                 barrier();
2271                 if (status_idx != status_blk->status_idx) {
2272                         status_idx = status_blk->status_idx;
2273                         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2274                         hw_prod = status_blk->status_completion_producer_index;
2275                 } else
2276                         break;
2277         }
2278
2279 done:
2280         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2281         cp->kcq_prod_idx = sw_prod;
2282
2283         cnic_chk_pkt_rings(cp);
2284
2285         cp->last_status_idx = status_idx;
2286         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2287                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2288 }
2289
2290 static void cnic_doirq(struct cnic_dev *dev)
2291 {
2292         struct cnic_local *cp = dev->cnic_priv;
2293         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2294
2295         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2296                 prefetch(cp->status_blk.gen);
2297                 prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2298
2299                 tasklet_schedule(&cp->cnic_irq_task);
2300         }
2301 }
2302
2303 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2304 {
2305         struct cnic_dev *dev = dev_instance;
2306         struct cnic_local *cp = dev->cnic_priv;
2307
2308         if (cp->ack_int)
2309                 cp->ack_int(dev);
2310
2311         cnic_doirq(dev);
2312
2313         return IRQ_HANDLED;
2314 }
2315
2316 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2317                                       u16 index, u8 op, u8 update)
2318 {
2319         struct cnic_local *cp = dev->cnic_priv;
2320         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2321                        COMMAND_REG_INT_ACK);
2322         struct igu_ack_register igu_ack;
2323
2324         igu_ack.status_block_index = index;
2325         igu_ack.sb_id_and_flags =
2326                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2327                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2328                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2329                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2330
2331         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2332 }
2333
2334 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2335 {
2336         struct cnic_local *cp = dev->cnic_priv;
2337
2338         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID, 0,
2339                            IGU_INT_DISABLE, 0);
2340 }
2341
2342 static void cnic_service_bnx2x_bh(unsigned long data)
2343 {
2344         struct cnic_dev *dev = (struct cnic_dev *) data;
2345         struct cnic_local *cp = dev->cnic_priv;
2346         u16 hw_prod, sw_prod;
2347         struct cstorm_status_block_c *sblk =
2348                 &cp->status_blk.bnx2x->c_status_block;
2349         u32 status_idx = sblk->status_block_index;
2350         int kcqe_cnt;
2351
2352         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2353                 return;
2354
2355         hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2356         hw_prod = cp->hw_idx(hw_prod);
2357         sw_prod = cp->kcq_prod_idx;
2358         while (sw_prod != hw_prod) {
2359                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2360                 if (kcqe_cnt == 0)
2361                         goto done;
2362
2363                 service_kcqes(dev, kcqe_cnt);
2364
2365                 /* Tell compiler that sblk fields can change. */
2366                 barrier();
2367                 if (status_idx == sblk->status_block_index)
2368                         break;
2369
2370                 status_idx = sblk->status_block_index;
2371                 hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2372                 hw_prod = cp->hw_idx(hw_prod);
2373         }
2374
2375 done:
2376         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod + MAX_KCQ_IDX);
2377         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID,
2378                            status_idx, IGU_INT_ENABLE, 1);
2379
2380         cp->kcq_prod_idx = sw_prod;
2381 }
2382
2383 static int cnic_service_bnx2x(void *data, void *status_blk)
2384 {
2385         struct cnic_dev *dev = data;
2386         struct cnic_local *cp = dev->cnic_priv;
2387
2388         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
2389                 cnic_doirq(dev);
2390
2391         cnic_chk_pkt_rings(cp);
2392
2393         return 0;
2394 }
2395
2396 static void cnic_ulp_stop(struct cnic_dev *dev)
2397 {
2398         struct cnic_local *cp = dev->cnic_priv;
2399         int if_type;
2400
2401         if (cp->cnic_uinfo)
2402                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2403
2404         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2405                 struct cnic_ulp_ops *ulp_ops;
2406
2407                 mutex_lock(&cnic_lock);
2408                 ulp_ops = cp->ulp_ops[if_type];
2409                 if (!ulp_ops) {
2410                         mutex_unlock(&cnic_lock);
2411                         continue;
2412                 }
2413                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2414                 mutex_unlock(&cnic_lock);
2415
2416                 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2417                         ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2418
2419                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2420         }
2421 }
2422
2423 static void cnic_ulp_start(struct cnic_dev *dev)
2424 {
2425         struct cnic_local *cp = dev->cnic_priv;
2426         int if_type;
2427
2428         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2429                 struct cnic_ulp_ops *ulp_ops;
2430
2431                 mutex_lock(&cnic_lock);
2432                 ulp_ops = cp->ulp_ops[if_type];
2433                 if (!ulp_ops || !ulp_ops->cnic_start) {
2434                         mutex_unlock(&cnic_lock);
2435                         continue;
2436                 }
2437                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2438                 mutex_unlock(&cnic_lock);
2439
2440                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2441                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2442
2443                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2444         }
2445 }
2446
2447 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
2448 {
2449         struct cnic_dev *dev = data;
2450
2451         switch (info->cmd) {
2452         case CNIC_CTL_STOP_CMD:
2453                 cnic_hold(dev);
2454
2455                 cnic_ulp_stop(dev);
2456                 cnic_stop_hw(dev);
2457
2458                 cnic_put(dev);
2459                 break;
2460         case CNIC_CTL_START_CMD:
2461                 cnic_hold(dev);
2462
2463                 if (!cnic_start_hw(dev))
2464                         cnic_ulp_start(dev);
2465
2466                 cnic_put(dev);
2467                 break;
2468         case CNIC_CTL_COMPLETION_CMD: {
2469                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
2470                 u32 l5_cid;
2471                 struct cnic_local *cp = dev->cnic_priv;
2472
2473                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
2474                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2475
2476                         ctx->wait_cond = 1;
2477                         wake_up(&ctx->waitq);
2478                 }
2479                 break;
2480         }
2481         default:
2482                 return -EINVAL;
2483         }
2484         return 0;
2485 }
2486
2487 static void cnic_ulp_init(struct cnic_dev *dev)
2488 {
2489         int i;
2490         struct cnic_local *cp = dev->cnic_priv;
2491
2492         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2493                 struct cnic_ulp_ops *ulp_ops;
2494
2495                 mutex_lock(&cnic_lock);
2496                 ulp_ops = cnic_ulp_tbl[i];
2497                 if (!ulp_ops || !ulp_ops->cnic_init) {
2498                         mutex_unlock(&cnic_lock);
2499                         continue;
2500                 }
2501                 ulp_get(ulp_ops);
2502                 mutex_unlock(&cnic_lock);
2503
2504                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2505                         ulp_ops->cnic_init(dev);
2506
2507                 ulp_put(ulp_ops);
2508         }
2509 }
2510
2511 static void cnic_ulp_exit(struct cnic_dev *dev)
2512 {
2513         int i;
2514         struct cnic_local *cp = dev->cnic_priv;
2515
2516         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2517                 struct cnic_ulp_ops *ulp_ops;
2518
2519                 mutex_lock(&cnic_lock);
2520                 ulp_ops = cnic_ulp_tbl[i];
2521                 if (!ulp_ops || !ulp_ops->cnic_exit) {
2522                         mutex_unlock(&cnic_lock);
2523                         continue;
2524                 }
2525                 ulp_get(ulp_ops);
2526                 mutex_unlock(&cnic_lock);
2527
2528                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2529                         ulp_ops->cnic_exit(dev);
2530
2531                 ulp_put(ulp_ops);
2532         }
2533 }
2534
2535 static int cnic_cm_offload_pg(struct cnic_sock *csk)
2536 {
2537         struct cnic_dev *dev = csk->dev;
2538         struct l4_kwq_offload_pg *l4kwqe;
2539         struct kwqe *wqes[1];
2540
2541         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
2542         memset(l4kwqe, 0, sizeof(*l4kwqe));
2543         wqes[0] = (struct kwqe *) l4kwqe;
2544
2545         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
2546         l4kwqe->flags =
2547                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
2548         l4kwqe->l2hdr_nbytes = ETH_HLEN;
2549
2550         l4kwqe->da0 = csk->ha[0];
2551         l4kwqe->da1 = csk->ha[1];
2552         l4kwqe->da2 = csk->ha[2];
2553         l4kwqe->da3 = csk->ha[3];
2554         l4kwqe->da4 = csk->ha[4];
2555         l4kwqe->da5 = csk->ha[5];
2556
2557         l4kwqe->sa0 = dev->mac_addr[0];
2558         l4kwqe->sa1 = dev->mac_addr[1];
2559         l4kwqe->sa2 = dev->mac_addr[2];
2560         l4kwqe->sa3 = dev->mac_addr[3];
2561         l4kwqe->sa4 = dev->mac_addr[4];
2562         l4kwqe->sa5 = dev->mac_addr[5];
2563
2564         l4kwqe->etype = ETH_P_IP;
2565         l4kwqe->ipid_start = DEF_IPID_START;
2566         l4kwqe->host_opaque = csk->l5_cid;
2567
2568         if (csk->vlan_id) {
2569                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
2570                 l4kwqe->vlan_tag = csk->vlan_id;
2571                 l4kwqe->l2hdr_nbytes += 4;
2572         }
2573
2574         return dev->submit_kwqes(dev, wqes, 1);
2575 }
2576
2577 static int cnic_cm_update_pg(struct cnic_sock *csk)
2578 {
2579         struct cnic_dev *dev = csk->dev;
2580         struct l4_kwq_update_pg *l4kwqe;
2581         struct kwqe *wqes[1];
2582
2583         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
2584         memset(l4kwqe, 0, sizeof(*l4kwqe));
2585         wqes[0] = (struct kwqe *) l4kwqe;
2586
2587         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
2588         l4kwqe->flags =
2589                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
2590         l4kwqe->pg_cid = csk->pg_cid;
2591
2592         l4kwqe->da0 = csk->ha[0];
2593         l4kwqe->da1 = csk->ha[1];
2594         l4kwqe->da2 = csk->ha[2];
2595         l4kwqe->da3 = csk->ha[3];
2596         l4kwqe->da4 = csk->ha[4];
2597         l4kwqe->da5 = csk->ha[5];
2598
2599         l4kwqe->pg_host_opaque = csk->l5_cid;
2600         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
2601
2602         return dev->submit_kwqes(dev, wqes, 1);
2603 }
2604
2605 static int cnic_cm_upload_pg(struct cnic_sock *csk)
2606 {
2607         struct cnic_dev *dev = csk->dev;
2608         struct l4_kwq_upload *l4kwqe;
2609         struct kwqe *wqes[1];
2610
2611         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
2612         memset(l4kwqe, 0, sizeof(*l4kwqe));
2613         wqes[0] = (struct kwqe *) l4kwqe;
2614
2615         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
2616         l4kwqe->flags =
2617                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
2618         l4kwqe->cid = csk->pg_cid;
2619
2620         return dev->submit_kwqes(dev, wqes, 1);
2621 }
2622
2623 static int cnic_cm_conn_req(struct cnic_sock *csk)
2624 {
2625         struct cnic_dev *dev = csk->dev;
2626         struct l4_kwq_connect_req1 *l4kwqe1;
2627         struct l4_kwq_connect_req2 *l4kwqe2;
2628         struct l4_kwq_connect_req3 *l4kwqe3;
2629         struct kwqe *wqes[3];
2630         u8 tcp_flags = 0;
2631         int num_wqes = 2;
2632
2633         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
2634         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
2635         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
2636         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
2637         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
2638         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
2639
2640         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
2641         l4kwqe3->flags =
2642                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
2643         l4kwqe3->ka_timeout = csk->ka_timeout;
2644         l4kwqe3->ka_interval = csk->ka_interval;
2645         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
2646         l4kwqe3->tos = csk->tos;
2647         l4kwqe3->ttl = csk->ttl;
2648         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
2649         l4kwqe3->pmtu = csk->mtu;
2650         l4kwqe3->rcv_buf = csk->rcv_buf;
2651         l4kwqe3->snd_buf = csk->snd_buf;
2652         l4kwqe3->seed = csk->seed;
2653
2654         wqes[0] = (struct kwqe *) l4kwqe1;
2655         if (test_bit(SK_F_IPV6, &csk->flags)) {
2656                 wqes[1] = (struct kwqe *) l4kwqe2;
2657                 wqes[2] = (struct kwqe *) l4kwqe3;
2658                 num_wqes = 3;
2659
2660                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
2661                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
2662                 l4kwqe2->flags =
2663                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
2664                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
2665                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
2666                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
2667                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
2668                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
2669                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
2670                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
2671                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
2672                                sizeof(struct tcphdr);
2673         } else {
2674                 wqes[1] = (struct kwqe *) l4kwqe3;
2675                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
2676                                sizeof(struct tcphdr);
2677         }
2678
2679         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
2680         l4kwqe1->flags =
2681                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
2682                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
2683         l4kwqe1->cid = csk->cid;
2684         l4kwqe1->pg_cid = csk->pg_cid;
2685         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
2686         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
2687         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
2688         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
2689         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
2690                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
2691         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
2692                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
2693         if (csk->tcp_flags & SK_TCP_NAGLE)
2694                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
2695         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
2696                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
2697         if (csk->tcp_flags & SK_TCP_SACK)
2698                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
2699         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
2700                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
2701
2702         l4kwqe1->tcp_flags = tcp_flags;
2703
2704         return dev->submit_kwqes(dev, wqes, num_wqes);
2705 }
2706
2707 static int cnic_cm_close_req(struct cnic_sock *csk)
2708 {
2709         struct cnic_dev *dev = csk->dev;
2710         struct l4_kwq_close_req *l4kwqe;
2711         struct kwqe *wqes[1];
2712
2713         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
2714         memset(l4kwqe, 0, sizeof(*l4kwqe));
2715         wqes[0] = (struct kwqe *) l4kwqe;
2716
2717         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
2718         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
2719         l4kwqe->cid = csk->cid;
2720
2721         return dev->submit_kwqes(dev, wqes, 1);
2722 }
2723
2724 static int cnic_cm_abort_req(struct cnic_sock *csk)
2725 {
2726         struct cnic_dev *dev = csk->dev;
2727         struct l4_kwq_reset_req *l4kwqe;
2728         struct kwqe *wqes[1];
2729
2730         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
2731         memset(l4kwqe, 0, sizeof(*l4kwqe));
2732         wqes[0] = (struct kwqe *) l4kwqe;
2733
2734         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
2735         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
2736         l4kwqe->cid = csk->cid;
2737
2738         return dev->submit_kwqes(dev, wqes, 1);
2739 }
2740
2741 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
2742                           u32 l5_cid, struct cnic_sock **csk, void *context)
2743 {
2744         struct cnic_local *cp = dev->cnic_priv;
2745         struct cnic_sock *csk1;
2746
2747         if (l5_cid >= MAX_CM_SK_TBL_SZ)
2748                 return -EINVAL;
2749
2750         csk1 = &cp->csk_tbl[l5_cid];
2751         if (atomic_read(&csk1->ref_count))
2752                 return -EAGAIN;
2753
2754         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
2755                 return -EBUSY;
2756
2757         csk1->dev = dev;
2758         csk1->cid = cid;
2759         csk1->l5_cid = l5_cid;
2760         csk1->ulp_type = ulp_type;
2761         csk1->context = context;
2762
2763         csk1->ka_timeout = DEF_KA_TIMEOUT;
2764         csk1->ka_interval = DEF_KA_INTERVAL;
2765         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
2766         csk1->tos = DEF_TOS;
2767         csk1->ttl = DEF_TTL;
2768         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
2769         csk1->rcv_buf = DEF_RCV_BUF;
2770         csk1->snd_buf = DEF_SND_BUF;
2771         csk1->seed = DEF_SEED;
2772
2773         *csk = csk1;
2774         return 0;
2775 }
2776
2777 static void cnic_cm_cleanup(struct cnic_sock *csk)
2778 {
2779         if (csk->src_port) {
2780                 struct cnic_dev *dev = csk->dev;
2781                 struct cnic_local *cp = dev->cnic_priv;
2782
2783                 cnic_free_id(&cp->csk_port_tbl, csk->src_port);
2784                 csk->src_port = 0;
2785         }
2786 }
2787
2788 static void cnic_close_conn(struct cnic_sock *csk)
2789 {
2790         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
2791                 cnic_cm_upload_pg(csk);
2792                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
2793         }
2794         cnic_cm_cleanup(csk);
2795 }
2796
2797 static int cnic_cm_destroy(struct cnic_sock *csk)
2798 {
2799         if (!cnic_in_use(csk))
2800                 return -EINVAL;
2801
2802         csk_hold(csk);
2803         clear_bit(SK_F_INUSE, &csk->flags);
2804         smp_mb__after_clear_bit();
2805         while (atomic_read(&csk->ref_count) != 1)
2806                 msleep(1);
2807         cnic_cm_cleanup(csk);
2808
2809         csk->flags = 0;
2810         csk_put(csk);
2811         return 0;
2812 }
2813
2814 static inline u16 cnic_get_vlan(struct net_device *dev,
2815                                 struct net_device **vlan_dev)
2816 {
2817         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2818                 *vlan_dev = vlan_dev_real_dev(dev);
2819                 return vlan_dev_vlan_id(dev);
2820         }
2821         *vlan_dev = dev;
2822         return 0;
2823 }
2824
2825 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
2826                              struct dst_entry **dst)
2827 {
2828 #if defined(CONFIG_INET)
2829         struct flowi fl;
2830         int err;
2831         struct rtable *rt;
2832
2833         memset(&fl, 0, sizeof(fl));
2834         fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
2835
2836         err = ip_route_output_key(&init_net, &rt, &fl);
2837         if (!err)
2838                 *dst = &rt->dst;
2839         return err;
2840 #else
2841         return -ENETUNREACH;
2842 #endif
2843 }
2844
2845 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
2846                              struct dst_entry **dst)
2847 {
2848 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2849         struct flowi fl;
2850
2851         memset(&fl, 0, sizeof(fl));
2852         ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
2853         if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
2854                 fl.oif = dst_addr->sin6_scope_id;
2855
2856         *dst = ip6_route_output(&init_net, NULL, &fl);
2857         if (*dst)
2858                 return 0;
2859 #endif
2860
2861         return -ENETUNREACH;
2862 }
2863
2864 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
2865                                            int ulp_type)
2866 {
2867         struct cnic_dev *dev = NULL;
2868         struct dst_entry *dst;
2869         struct net_device *netdev = NULL;
2870         int err = -ENETUNREACH;
2871
2872         if (dst_addr->sin_family == AF_INET)
2873                 err = cnic_get_v4_route(dst_addr, &dst);
2874         else if (dst_addr->sin_family == AF_INET6) {
2875                 struct sockaddr_in6 *dst_addr6 =
2876                         (struct sockaddr_in6 *) dst_addr;
2877
2878                 err = cnic_get_v6_route(dst_addr6, &dst);
2879         } else
2880                 return NULL;
2881
2882         if (err)
2883                 return NULL;
2884
2885         if (!dst->dev)
2886                 goto done;
2887
2888         cnic_get_vlan(dst->dev, &netdev);
2889
2890         dev = cnic_from_netdev(netdev);
2891
2892 done:
2893         dst_release(dst);
2894         if (dev)
2895                 cnic_put(dev);
2896         return dev;
2897 }
2898
2899 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2900 {
2901         struct cnic_dev *dev = csk->dev;
2902         struct cnic_local *cp = dev->cnic_priv;
2903
2904         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
2905 }
2906
2907 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2908 {
2909         struct cnic_dev *dev = csk->dev;
2910         struct cnic_local *cp = dev->cnic_priv;
2911         int is_v6, rc = 0;
2912         struct dst_entry *dst = NULL;
2913         struct net_device *realdev;
2914         u32 local_port;
2915
2916         if (saddr->local.v6.sin6_family == AF_INET6 &&
2917             saddr->remote.v6.sin6_family == AF_INET6)
2918                 is_v6 = 1;
2919         else if (saddr->local.v4.sin_family == AF_INET &&
2920                  saddr->remote.v4.sin_family == AF_INET)
2921                 is_v6 = 0;
2922         else
2923                 return -EINVAL;
2924
2925         clear_bit(SK_F_IPV6, &csk->flags);
2926
2927         if (is_v6) {
2928                 set_bit(SK_F_IPV6, &csk->flags);
2929                 cnic_get_v6_route(&saddr->remote.v6, &dst);
2930
2931                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
2932                        sizeof(struct in6_addr));
2933                 csk->dst_port = saddr->remote.v6.sin6_port;
2934                 local_port = saddr->local.v6.sin6_port;
2935
2936         } else {
2937                 cnic_get_v4_route(&saddr->remote.v4, &dst);
2938
2939                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
2940                 csk->dst_port = saddr->remote.v4.sin_port;
2941                 local_port = saddr->local.v4.sin_port;
2942         }
2943
2944         csk->vlan_id = 0;
2945         csk->mtu = dev->netdev->mtu;
2946         if (dst && dst->dev) {
2947                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
2948                 if (realdev == dev->netdev) {
2949                         csk->vlan_id = vlan;
2950                         csk->mtu = dst_mtu(dst);
2951                 }
2952         }
2953
2954         if (local_port >= CNIC_LOCAL_PORT_MIN &&
2955             local_port < CNIC_LOCAL_PORT_MAX) {
2956                 if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
2957                         local_port = 0;
2958         } else
2959                 local_port = 0;
2960
2961         if (!local_port) {
2962                 local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
2963                 if (local_port == -1) {
2964                         rc = -ENOMEM;
2965                         goto err_out;
2966                 }
2967         }
2968         csk->src_port = local_port;
2969
2970 err_out:
2971         dst_release(dst);
2972         return rc;
2973 }
2974
2975 static void cnic_init_csk_state(struct cnic_sock *csk)
2976 {
2977         csk->state = 0;
2978         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
2979         clear_bit(SK_F_CLOSING, &csk->flags);
2980 }
2981
2982 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2983 {
2984         int err = 0;
2985
2986         if (!cnic_in_use(csk))
2987                 return -EINVAL;
2988
2989         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
2990                 return -EINVAL;
2991
2992         cnic_init_csk_state(csk);
2993
2994         err = cnic_get_route(csk, saddr);
2995         if (err)
2996                 goto err_out;
2997
2998         err = cnic_resolve_addr(csk, saddr);
2999         if (!err)
3000                 return 0;
3001
3002 err_out:
3003         clear_bit(SK_F_CONNECT_START, &csk->flags);
3004         return err;
3005 }
3006
3007 static int cnic_cm_abort(struct cnic_sock *csk)
3008 {
3009         struct cnic_local *cp = csk->dev->cnic_priv;
3010         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3011
3012         if (!cnic_in_use(csk))
3013                 return -EINVAL;
3014
3015         if (cnic_abort_prep(csk))
3016                 return cnic_cm_abort_req(csk);
3017
3018         /* Getting here means that we haven't started connect, or
3019          * connect was not successful.
3020          */
3021
3022         cp->close_conn(csk, opcode);
3023         if (csk->state != opcode)
3024                 return -EALREADY;
3025
3026         return 0;
3027 }
3028
3029 static int cnic_cm_close(struct cnic_sock *csk)
3030 {
3031         if (!cnic_in_use(csk))
3032                 return -EINVAL;
3033
3034         if (cnic_close_prep(csk)) {
3035                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3036                 return cnic_cm_close_req(csk);
3037         } else {
3038                 return -EALREADY;
3039         }
3040         return 0;
3041 }
3042
3043 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3044                            u8 opcode)
3045 {
3046         struct cnic_ulp_ops *ulp_ops;
3047         int ulp_type = csk->ulp_type;
3048
3049         rcu_read_lock();
3050         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3051         if (ulp_ops) {
3052                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3053                         ulp_ops->cm_connect_complete(csk);
3054                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3055                         ulp_ops->cm_close_complete(csk);
3056                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3057                         ulp_ops->cm_remote_abort(csk);
3058                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3059                         ulp_ops->cm_abort_complete(csk);
3060                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3061                         ulp_ops->cm_remote_close(csk);
3062         }
3063         rcu_read_unlock();
3064 }
3065
3066 static int cnic_cm_set_pg(struct cnic_sock *csk)
3067 {
3068         if (cnic_offld_prep(csk)) {
3069                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3070                         cnic_cm_update_pg(csk);
3071                 else
3072                         cnic_cm_offload_pg(csk);
3073         }
3074         return 0;
3075 }
3076
3077 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3078 {
3079         struct cnic_local *cp = dev->cnic_priv;
3080         u32 l5_cid = kcqe->pg_host_opaque;
3081         u8 opcode = kcqe->op_code;
3082         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3083
3084         csk_hold(csk);
3085         if (!cnic_in_use(csk))
3086                 goto done;
3087
3088         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3089                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3090                 goto done;
3091         }
3092         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3093         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3094                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3095                 cnic_cm_upcall(cp, csk,
3096                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3097                 goto done;
3098         }
3099
3100         csk->pg_cid = kcqe->pg_cid;
3101         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3102         cnic_cm_conn_req(csk);
3103
3104 done:
3105         csk_put(csk);
3106 }
3107
3108 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3109 {
3110         struct cnic_local *cp = dev->cnic_priv;
3111         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3112         u8 opcode = l4kcqe->op_code;
3113         u32 l5_cid;
3114         struct cnic_sock *csk;
3115
3116         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3117             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3118                 cnic_cm_process_offld_pg(dev, l4kcqe);
3119                 return;
3120         }
3121
3122         l5_cid = l4kcqe->conn_id;
3123         if (opcode & 0x80)
3124                 l5_cid = l4kcqe->cid;
3125         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3126                 return;
3127
3128         csk = &cp->csk_tbl[l5_cid];
3129         csk_hold(csk);
3130
3131         if (!cnic_in_use(csk)) {
3132                 csk_put(csk);
3133                 return;
3134         }
3135
3136         switch (opcode) {
3137         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3138                 if (l4kcqe->status != 0) {
3139                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3140                         cnic_cm_upcall(cp, csk,
3141                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3142                 }
3143                 break;
3144         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3145                 if (l4kcqe->status == 0)
3146                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3147
3148                 smp_mb__before_clear_bit();
3149                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3150                 cnic_cm_upcall(cp, csk, opcode);
3151                 break;
3152
3153         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3154         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3155         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3156         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3157         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3158                 cp->close_conn(csk, opcode);
3159                 break;
3160
3161         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3162                 cnic_cm_upcall(cp, csk, opcode);
3163                 break;
3164         }
3165         csk_put(csk);
3166 }
3167
3168 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3169 {
3170         struct cnic_dev *dev = data;
3171         int i;
3172
3173         for (i = 0; i < num; i++)
3174                 cnic_cm_process_kcqe(dev, kcqe[i]);
3175 }
3176
3177 static struct cnic_ulp_ops cm_ulp_ops = {
3178         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3179 };
3180
3181 static void cnic_cm_free_mem(struct cnic_dev *dev)
3182 {
3183         struct cnic_local *cp = dev->cnic_priv;
3184
3185         kfree(cp->csk_tbl);
3186         cp->csk_tbl = NULL;
3187         cnic_free_id_tbl(&cp->csk_port_tbl);
3188 }
3189
3190 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3191 {
3192         struct cnic_local *cp = dev->cnic_priv;
3193
3194         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3195                               GFP_KERNEL);
3196         if (!cp->csk_tbl)
3197                 return -ENOMEM;
3198
3199         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3200                              CNIC_LOCAL_PORT_MIN)) {
3201                 cnic_cm_free_mem(dev);
3202                 return -ENOMEM;
3203         }
3204         return 0;
3205 }
3206
3207 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3208 {
3209         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
3210                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
3211                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
3212                 csk->state = opcode;
3213         }
3214
3215         /* 1. If event opcode matches the expected event in csk->state
3216          * 2. If the expected event is CLOSE_COMP, we accept any event
3217          * 3. If the expected event is 0, meaning the connection was never
3218          *    never established, we accept the opcode from cm_abort.
3219          */
3220         if (opcode == csk->state || csk->state == 0 ||
3221             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) {
3222                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
3223                         if (csk->state == 0)
3224                                 csk->state = opcode;
3225                         return 1;
3226                 }
3227         }
3228         return 0;
3229 }
3230
3231 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3232 {
3233         struct cnic_dev *dev = csk->dev;
3234         struct cnic_local *cp = dev->cnic_priv;
3235
3236         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
3237                 cnic_cm_upcall(cp, csk, opcode);
3238                 return;
3239         }
3240
3241         clear_bit(SK_F_CONNECT_START, &csk->flags);
3242         cnic_close_conn(csk);
3243         csk->state = opcode;
3244         cnic_cm_upcall(cp, csk, opcode);
3245 }
3246
3247 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3248 {
3249 }
3250
3251 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3252 {
3253         u32 seed;
3254
3255         get_random_bytes(&seed, 4);
3256         cnic_ctx_wr(dev, 45, 0, seed);
3257         return 0;
3258 }
3259
3260 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3261 {
3262         struct cnic_dev *dev = csk->dev;
3263         struct cnic_local *cp = dev->cnic_priv;
3264         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3265         union l5cm_specific_data l5_data;
3266         u32 cmd = 0;
3267         int close_complete = 0;
3268
3269         switch (opcode) {
3270         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3271         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3272         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3273                 if (cnic_ready_to_close(csk, opcode)) {
3274                         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3275                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3276                         else
3277                                 close_complete = 1;
3278                 }
3279                 break;
3280         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3281                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3282                 break;
3283         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3284                 close_complete = 1;
3285                 break;
3286         }
3287         if (cmd) {
3288                 memset(&l5_data, 0, sizeof(l5_data));
3289
3290                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3291                                     &l5_data);
3292         } else if (close_complete) {
3293                 ctx->timestamp = jiffies;
3294                 cnic_close_conn(csk);
3295                 cnic_cm_upcall(cp, csk, csk->state);
3296         }
3297 }
3298
3299 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3300 {
3301 }
3302
3303 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3304 {
3305         struct cnic_local *cp = dev->cnic_priv;
3306         int func = CNIC_FUNC(cp);
3307
3308         cnic_init_bnx2x_mac(dev);
3309         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3310
3311         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3312                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(func), 0);
3313
3314         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3315                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(func), 1);
3316         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3317                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(func),
3318                 DEF_MAX_DA_COUNT);
3319
3320         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3321                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(func), DEF_TTL);
3322         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3323                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(func), DEF_TOS);
3324         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3325                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(func), 2);
3326         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3327                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(func), DEF_SWS_TIMER);
3328
3329         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(func),
3330                 DEF_MAX_CWND);
3331         return 0;
3332 }
3333
3334 static int cnic_cm_open(struct cnic_dev *dev)
3335 {
3336         struct cnic_local *cp = dev->cnic_priv;
3337         int err;
3338
3339         err = cnic_cm_alloc_mem(dev);
3340         if (err)
3341                 return err;
3342
3343         err = cp->start_cm(dev);
3344
3345         if (err)
3346                 goto err_out;
3347
3348         dev->cm_create = cnic_cm_create;
3349         dev->cm_destroy = cnic_cm_destroy;
3350         dev->cm_connect = cnic_cm_connect;
3351         dev->cm_abort = cnic_cm_abort;
3352         dev->cm_close = cnic_cm_close;
3353         dev->cm_select_dev = cnic_cm_select_dev;
3354
3355         cp->ulp_handle[CNIC_ULP_L4] = dev;
3356         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
3357         return 0;
3358
3359 err_out:
3360         cnic_cm_free_mem(dev);
3361         return err;
3362 }
3363
3364 static int cnic_cm_shutdown(struct cnic_dev *dev)
3365 {
3366         struct cnic_local *cp = dev->cnic_priv;
3367         int i;
3368
3369         cp->stop_cm(dev);
3370
3371         if (!cp->csk_tbl)
3372                 return 0;
3373
3374         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
3375                 struct cnic_sock *csk = &cp->csk_tbl[i];
3376
3377                 clear_bit(SK_F_INUSE, &csk->flags);
3378                 cnic_cm_cleanup(csk);
3379         }
3380         cnic_cm_free_mem(dev);
3381
3382         return 0;
3383 }
3384
3385 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
3386 {
3387         u32 cid_addr;
3388         int i;
3389
3390         cid_addr = GET_CID_ADDR(cid);
3391
3392         for (i = 0; i < CTX_SIZE; i += 4)
3393                 cnic_ctx_wr(dev, cid_addr, i, 0);
3394 }
3395
3396 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
3397 {
3398         struct cnic_local *cp = dev->cnic_priv;
3399         int ret = 0, i;
3400         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
3401
3402         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3403                 return 0;
3404
3405         for (i = 0; i < cp->ctx_blks; i++) {
3406                 int j;
3407                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
3408                 u32 val;
3409
3410                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
3411
3412                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
3413                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
3414                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
3415                         (u64) cp->ctx_arr[i].mapping >> 32);
3416                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
3417                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
3418                 for (j = 0; j < 10; j++) {
3419
3420                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
3421                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
3422                                 break;
3423                         udelay(5);
3424                 }
3425                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
3426                         ret = -EBUSY;
3427                         break;
3428                 }
3429         }
3430         return ret;
3431 }
3432
3433 static void cnic_free_irq(struct cnic_dev *dev)
3434 {
3435         struct cnic_local *cp = dev->cnic_priv;
3436         struct cnic_eth_dev *ethdev = cp->ethdev;
3437
3438         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3439                 cp->disable_int_sync(dev);
3440                 tasklet_disable(&cp->cnic_irq_task);
3441                 free_irq(ethdev->irq_arr[0].vector, dev);
3442         }
3443 }
3444
3445 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
3446 {
3447         struct cnic_local *cp = dev->cnic_priv;
3448         struct cnic_eth_dev *ethdev = cp->ethdev;
3449
3450         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3451                 int err, i = 0;
3452                 int sblk_num = cp->status_blk_num;
3453                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
3454                            BNX2_HC_SB_CONFIG_1;
3455
3456                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
3457
3458                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
3459                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
3460                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
3461
3462                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
3463                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
3464                              (unsigned long) dev);
3465                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3466                                   "cnic", dev);
3467                 if (err) {
3468                         tasklet_disable(&cp->cnic_irq_task);
3469                         return err;
3470                 }
3471                 while (cp->status_blk.bnx2->status_completion_producer_index &&
3472                        i < 10) {
3473                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
3474                                 1 << (11 + sblk_num));
3475                         udelay(10);
3476                         i++;
3477                         barrier();
3478                 }
3479                 if (cp->status_blk.bnx2->status_completion_producer_index) {
3480                         cnic_free_irq(dev);
3481                         goto failed;
3482                 }
3483
3484         } else {
3485                 struct status_block *sblk = cp->status_blk.gen;
3486                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
3487                 int i = 0;
3488
3489                 while (sblk->status_completion_producer_index && i < 10) {
3490                         CNIC_WR(dev, BNX2_HC_COMMAND,
3491                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
3492                         udelay(10);
3493                         i++;
3494                         barrier();
3495                 }
3496                 if (sblk->status_completion_producer_index)
3497                         goto failed;
3498
3499         }
3500         return 0;
3501
3502 failed:
3503         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
3504         return -EBUSY;
3505 }
3506
3507 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
3508 {
3509         struct cnic_local *cp = dev->cnic_priv;
3510         struct cnic_eth_dev *ethdev = cp->ethdev;
3511
3512         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3513                 return;
3514
3515         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3516                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3517 }
3518
3519 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
3520 {
3521         struct cnic_local *cp = dev->cnic_priv;
3522         struct cnic_eth_dev *ethdev = cp->ethdev;
3523
3524         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3525                 return;
3526
3527         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3528                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
3529         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
3530         synchronize_irq(ethdev->irq_arr[0].vector);
3531 }
3532
3533 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
3534 {
3535         struct cnic_local *cp = dev->cnic_priv;
3536         struct cnic_eth_dev *ethdev = cp->ethdev;
3537         u32 cid_addr, tx_cid, sb_id;
3538         u32 val, offset0, offset1, offset2, offset3;
3539         int i;
3540         struct tx_bd *txbd;
3541         dma_addr_t buf_map;
3542         struct status_block *s_blk = cp->status_blk.gen;
3543
3544         sb_id = cp->status_blk_num;
3545         tx_cid = 20;
3546         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
3547         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3548                 struct status_block_msix *sblk = cp->status_blk.bnx2;
3549
3550                 tx_cid = TX_TSS_CID + sb_id - 1;
3551                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
3552                         (TX_TSS_CID << 7));
3553                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
3554         }
3555         cp->tx_cons = *cp->tx_cons_ptr;
3556
3557         cid_addr = GET_CID_ADDR(tx_cid);
3558         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
3559                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
3560
3561                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
3562                         cnic_ctx_wr(dev, cid_addr2, i, 0);
3563
3564                 offset0 = BNX2_L2CTX_TYPE_XI;
3565                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
3566                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
3567                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
3568         } else {
3569                 cnic_init_context(dev, tx_cid);
3570                 cnic_init_context(dev, tx_cid + 1);
3571
3572                 offset0 = BNX2_L2CTX_TYPE;
3573                 offset1 = BNX2_L2CTX_CMD_TYPE;
3574                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
3575                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
3576         }
3577         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
3578         cnic_ctx_wr(dev, cid_addr, offset0, val);
3579
3580         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
3581         cnic_ctx_wr(dev, cid_addr, offset1, val);
3582
3583         txbd = (struct tx_bd *) cp->l2_ring;
3584
3585         buf_map = cp->l2_buf_map;
3586         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
3587                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
3588                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3589         }
3590         val = (u64) cp->l2_ring_map >> 32;
3591         cnic_ctx_wr(dev, cid_addr, offset2, val);
3592         txbd->tx_bd_haddr_hi = val;
3593
3594         val = (u64) cp->l2_ring_map & 0xffffffff;
3595         cnic_ctx_wr(dev, cid_addr, offset3, val);
3596         txbd->tx_bd_haddr_lo = val;
3597 }
3598
3599 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
3600 {
3601         struct cnic_local *cp = dev->cnic_priv;
3602         struct cnic_eth_dev *ethdev = cp->ethdev;
3603         u32 cid_addr, sb_id, val, coal_reg, coal_val;
3604         int i;
3605         struct rx_bd *rxbd;
3606         struct status_block *s_blk = cp->status_blk.gen;
3607
3608         sb_id = cp->status_blk_num;
3609         cnic_init_context(dev, 2);
3610         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
3611         coal_reg = BNX2_HC_COMMAND;
3612         coal_val = CNIC_RD(dev, coal_reg);
3613         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3614                 struct status_block_msix *sblk = cp->status_blk.bnx2;
3615
3616                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
3617                 coal_reg = BNX2_HC_COALESCE_NOW;
3618                 coal_val = 1 << (11 + sb_id);
3619         }
3620         i = 0;
3621         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
3622                 CNIC_WR(dev, coal_reg, coal_val);
3623                 udelay(10);
3624                 i++;
3625                 barrier();
3626         }
3627         cp->rx_cons = *cp->rx_cons_ptr;
3628
3629         cid_addr = GET_CID_ADDR(2);
3630         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
3631               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
3632         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
3633
3634         if (sb_id == 0)
3635                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
3636         else
3637                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
3638         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
3639
3640         rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE);
3641         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
3642                 dma_addr_t buf_map;
3643                 int n = (i % cp->l2_rx_ring_size) + 1;
3644
3645                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3646                 rxbd->rx_bd_len = cp->l2_single_buf_size;
3647                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
3648                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
3649                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3650         }
3651         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3652         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
3653         rxbd->rx_bd_haddr_hi = val;
3654
3655         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3656         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
3657         rxbd->rx_bd_haddr_lo = val;
3658
3659         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
3660         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
3661 }
3662
3663 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
3664 {
3665         struct kwqe *wqes[1], l2kwqe;
3666
3667         memset(&l2kwqe, 0, sizeof(l2kwqe));
3668         wqes[0] = &l2kwqe;
3669         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) |
3670                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
3671                                KWQE_OPCODE_SHIFT) | 2;
3672         dev->submit_kwqes(dev, wqes, 1);
3673 }
3674
3675 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
3676 {
3677         struct cnic_local *cp = dev->cnic_priv;
3678         u32 val;
3679
3680         val = cp->func << 2;
3681
3682         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
3683
3684         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3685                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
3686         dev->mac_addr[0] = (u8) (val >> 8);
3687         dev->mac_addr[1] = (u8) val;
3688
3689         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
3690
3691         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3692                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
3693         dev->mac_addr[2] = (u8) (val >> 24);
3694         dev->mac_addr[3] = (u8) (val >> 16);
3695         dev->mac_addr[4] = (u8) (val >> 8);
3696         dev->mac_addr[5] = (u8) val;
3697
3698         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
3699
3700         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
3701         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3702                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
3703
3704         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
3705         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
3706         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
3707 }
3708
3709 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
3710 {
3711         struct cnic_local *cp = dev->cnic_priv;
3712         struct cnic_eth_dev *ethdev = cp->ethdev;
3713         struct status_block *sblk = cp->status_blk.gen;
3714         u32 val;
3715         int err;
3716
3717         cnic_set_bnx2_mac(dev);
3718
3719         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
3720         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
3721         if (BCM_PAGE_BITS > 12)
3722                 val |= (12 - 8)  << 4;
3723         else
3724                 val |= (BCM_PAGE_BITS - 8)  << 4;
3725
3726         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
3727
3728         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
3729         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
3730         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
3731
3732         err = cnic_setup_5709_context(dev, 1);
3733         if (err)
3734                 return err;
3735
3736         cnic_init_context(dev, KWQ_CID);
3737         cnic_init_context(dev, KCQ_CID);
3738
3739         cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
3740         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
3741
3742         cp->max_kwq_idx = MAX_KWQ_IDX;
3743         cp->kwq_prod_idx = 0;
3744         cp->kwq_con_idx = 0;
3745         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
3746
3747         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
3748                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
3749         else
3750                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
3751
3752         /* Initialize the kernel work queue context. */
3753         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3754               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3755         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val);
3756
3757         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
3758         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3759
3760         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
3761         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3762
3763         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
3764         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3765
3766         val = (u32) cp->kwq_info.pgtbl_map;
3767         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3768
3769         cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
3770         cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
3771
3772         cp->kcq_prod_idx = 0;
3773
3774         /* Initialize the kernel complete queue context. */
3775         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3776               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3777         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val);
3778
3779         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
3780         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3781
3782         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
3783         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3784
3785         val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32);
3786         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3787
3788         val = (u32) cp->kcq_info.pgtbl_map;
3789         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3790
3791         cp->int_num = 0;
3792         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3793                 u32 sb_id = cp->status_blk_num;
3794                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
3795
3796                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
3797                 cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3798                 cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3799         }
3800
3801         /* Enable Commnad Scheduler notification when we write to the
3802          * host producer index of the kernel contexts. */
3803         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
3804
3805         /* Enable Command Scheduler notification when we write to either
3806          * the Send Queue or Receive Queue producer indexes of the kernel
3807          * bypass contexts. */
3808         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
3809         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
3810
3811         /* Notify COM when the driver post an application buffer. */
3812         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
3813
3814         /* Set the CP and COM doorbells.  These two processors polls the
3815          * doorbell for a non zero value before running.  This must be done
3816          * after setting up the kernel queue contexts. */
3817         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
3818         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
3819
3820         cnic_init_bnx2_tx_ring(dev);
3821         cnic_init_bnx2_rx_ring(dev);
3822
3823         err = cnic_init_bnx2_irq(dev);
3824         if (err) {
3825                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
3826                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
3827                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
3828                 return err;
3829         }
3830
3831         return 0;
3832 }
3833
3834 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
3835 {
3836         struct cnic_local *cp = dev->cnic_priv;
3837         struct cnic_eth_dev *ethdev = cp->ethdev;
3838         u32 start_offset = ethdev->ctx_tbl_offset;
3839         int i;
3840
3841         for (i = 0; i < cp->ctx_blks; i++) {
3842                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
3843                 dma_addr_t map = ctx->mapping;
3844
3845                 if (cp->ctx_align) {
3846                         unsigned long mask = cp->ctx_align - 1;
3847
3848                         map = (map + mask) & ~mask;
3849                 }
3850
3851                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
3852         }
3853 }
3854
3855 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
3856 {
3857         struct cnic_local *cp = dev->cnic_priv;
3858         struct cnic_eth_dev *ethdev = cp->ethdev;
3859         int err = 0;
3860
3861         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
3862                      (unsigned long) dev);
3863         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3864                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3865                                   "cnic", dev);
3866                 if (err)
3867                         tasklet_disable(&cp->cnic_irq_task);
3868         }
3869         return err;
3870 }
3871
3872 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
3873 {
3874         struct cnic_local *cp = dev->cnic_priv;
3875         u8 sb_id = cp->status_blk_num;
3876         int port = CNIC_PORT(cp);
3877
3878         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
3879                  CSTORM_SB_HC_TIMEOUT_C_OFFSET(port, sb_id,
3880                                                HC_INDEX_C_ISCSI_EQ_CONS),
3881                  64 / 12);
3882         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
3883                   CSTORM_SB_HC_DISABLE_C_OFFSET(port, sb_id,
3884                                                 HC_INDEX_C_ISCSI_EQ_CONS), 0);
3885 }
3886
3887 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
3888 {
3889 }
3890
3891 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev)
3892 {
3893         struct cnic_local *cp = dev->cnic_priv;
3894         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) cp->l2_ring;
3895         struct eth_context *context;
3896         struct regpair context_addr;
3897         dma_addr_t buf_map;
3898         int func = CNIC_FUNC(cp);
3899         int port = CNIC_PORT(cp);
3900         int i;
3901         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3902         u32 val;
3903
3904         memset(txbd, 0, BCM_PAGE_SIZE);
3905
3906         buf_map = cp->l2_buf_map;
3907         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
3908                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
3909                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
3910
3911                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3912                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3913                 reg_bd->addr_hi = start_bd->addr_hi;
3914                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
3915                 start_bd->nbytes = cpu_to_le16(0x10);
3916                 start_bd->nbd = cpu_to_le16(3);
3917                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
3918                 start_bd->general_data = (UNICAST_ADDRESS <<
3919                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
3920                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
3921
3922         }
3923         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 1, &context_addr);
3924
3925         val = (u64) cp->l2_ring_map >> 32;
3926         txbd->next_bd.addr_hi = cpu_to_le32(val);
3927
3928         context->xstorm_st_context.tx_bd_page_base_hi = val;
3929
3930         val = (u64) cp->l2_ring_map & 0xffffffff;
3931         txbd->next_bd.addr_lo = cpu_to_le32(val);
3932
3933         context->xstorm_st_context.tx_bd_page_base_lo = val;
3934
3935         context->cstorm_st_context.sb_index_number =
3936                 HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS;
3937         context->cstorm_st_context.status_block_id = BNX2X_DEF_SB_ID;
3938
3939         if (cli < MAX_X_STAT_COUNTER_ID)
3940                 context->xstorm_st_context.statistics_data = cli |
3941                                 XSTORM_ETH_ST_CONTEXT_STATISTICS_ENABLE;
3942
3943         context->xstorm_ag_context.cdu_reserved =
3944                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3945                                         CDU_REGION_NUMBER_XCM_AG,
3946                                         ETH_CONNECTION_TYPE);
3947
3948         /* reset xstorm per client statistics */
3949         if (cli < MAX_X_STAT_COUNTER_ID) {
3950                 val = BAR_XSTRORM_INTMEM +
3951                       XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3952                 for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
3953                         CNIC_WR(dev, val + i * 4, 0);
3954         }
3955
3956         cp->tx_cons_ptr =
3957                 &cp->bnx2x_def_status_blk->c_def_status_block.index_values[
3958                         HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS];
3959 }
3960
3961 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev)
3962 {
3963         struct cnic_local *cp = dev->cnic_priv;
3964         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (cp->l2_ring +
3965                                 BCM_PAGE_SIZE);
3966         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
3967                                 (cp->l2_ring + (2 * BCM_PAGE_SIZE));
3968         struct eth_context *context;
3969         struct regpair context_addr;
3970         int i;
3971         int port = CNIC_PORT(cp);
3972         int func = CNIC_FUNC(cp);
3973         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3974         u32 val;
3975         struct tstorm_eth_client_config tstorm_client = {0};
3976
3977         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
3978                 dma_addr_t buf_map;
3979                 int n = (i % cp->l2_rx_ring_size) + 1;
3980
3981                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3982                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3983                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3984         }
3985         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 0, &context_addr);
3986
3987         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3988         rxbd->addr_hi = cpu_to_le32(val);
3989
3990         context->ustorm_st_context.common.bd_page_base_hi = val;
3991
3992         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3993         rxbd->addr_lo = cpu_to_le32(val);
3994
3995         context->ustorm_st_context.common.bd_page_base_lo = val;
3996
3997         context->ustorm_st_context.common.sb_index_numbers =
3998                                                 BNX2X_ISCSI_RX_SB_INDEX_NUM;
3999         context->ustorm_st_context.common.clientId = cli;
4000         context->ustorm_st_context.common.status_block_id = BNX2X_DEF_SB_ID;
4001         if (cli < MAX_U_STAT_COUNTER_ID) {
4002                 context->ustorm_st_context.common.flags =
4003                         USTORM_ETH_ST_CONTEXT_CONFIG_ENABLE_STATISTICS;
4004                 context->ustorm_st_context.common.statistics_counter_id = cli;
4005         }
4006         context->ustorm_st_context.common.mc_alignment_log_size = 0;
4007         context->ustorm_st_context.common.bd_buff_size =
4008                                                 cp->l2_single_buf_size;
4009
4010         context->ustorm_ag_context.cdu_usage =
4011                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
4012                                         CDU_REGION_NUMBER_UCM_AG,
4013                                         ETH_CONNECTION_TYPE);
4014
4015         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4016         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4017         rxcqe->addr_hi = cpu_to_le32(val);
4018
4019         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4020                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli) + 4, val);
4021
4022         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4023                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli) + 4, val);
4024
4025         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4026         rxcqe->addr_lo = cpu_to_le32(val);
4027
4028         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4029                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli), val);
4030
4031         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4032                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli), val);
4033
4034         /* client tstorm info */
4035         tstorm_client.mtu = cp->l2_single_buf_size - 14;
4036         tstorm_client.config_flags = TSTORM_ETH_CLIENT_CONFIG_E1HOV_REM_ENABLE;
4037
4038         if (cli < MAX_T_STAT_COUNTER_ID) {
4039                 tstorm_client.config_flags |=
4040                                 TSTORM_ETH_CLIENT_CONFIG_STATSITICS_ENABLE;
4041                 tstorm_client.statistics_counter_id = cli;
4042         }
4043
4044         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4045                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli),
4046                    ((u32 *)&tstorm_client)[0]);
4047         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4048                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli) + 4,
4049                    ((u32 *)&tstorm_client)[1]);
4050
4051         /* reset tstorm per client statistics */
4052         if (cli < MAX_T_STAT_COUNTER_ID) {
4053
4054                 val = BAR_TSTRORM_INTMEM +
4055                       TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4056                 for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
4057                         CNIC_WR(dev, val + i * 4, 0);
4058         }
4059
4060         /* reset ustorm per client statistics */
4061         if (cli < MAX_U_STAT_COUNTER_ID) {
4062                 val = BAR_USTRORM_INTMEM +
4063                       USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4064                 for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
4065                         CNIC_WR(dev, val + i * 4, 0);
4066         }
4067
4068         cp->rx_cons_ptr =
4069                 &cp->bnx2x_def_status_blk->u_def_status_block.index_values[
4070                         HC_INDEX_DEF_U_ETH_ISCSI_RX_CQ_CONS];
4071 }
4072
4073 static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
4074 {
4075         struct cnic_local *cp = dev->cnic_priv;
4076         u32 base, addr, val;
4077         int port = CNIC_PORT(cp);
4078
4079         dev->max_iscsi_conn = 0;
4080         base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
4081         if (base < 0xa0000 || base >= 0xc0000)
4082                 return;
4083
4084         addr = BNX2X_SHMEM_ADDR(base,
4085                 dev_info.port_hw_config[port].iscsi_mac_upper);
4086
4087         val = CNIC_RD(dev, addr);
4088
4089         dev->mac_addr[0] = (u8) (val >> 8);
4090         dev->mac_addr[1] = (u8) val;
4091
4092         addr = BNX2X_SHMEM_ADDR(base,
4093                 dev_info.port_hw_config[port].iscsi_mac_lower);
4094
4095         val = CNIC_RD(dev, addr);
4096
4097         dev->mac_addr[2] = (u8) (val >> 24);
4098         dev->mac_addr[3] = (u8) (val >> 16);
4099         dev->mac_addr[4] = (u8) (val >> 8);
4100         dev->mac_addr[5] = (u8) val;
4101
4102         addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
4103         val = CNIC_RD(dev, addr);
4104
4105         if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
4106                 u16 val16;
4107
4108                 addr = BNX2X_SHMEM_ADDR(base,
4109                                 drv_lic_key[port].max_iscsi_init_conn);
4110                 val16 = CNIC_RD16(dev, addr);
4111
4112                 if (val16)
4113                         val16 ^= 0x1e1e;
4114                 dev->max_iscsi_conn = val16;
4115         }
4116         if (BNX2X_CHIP_IS_E1H(cp->chip_id)) {
4117                 int func = CNIC_FUNC(cp);
4118
4119                 addr = BNX2X_SHMEM_ADDR(base,
4120                                 mf_cfg.func_mf_config[func].e1hov_tag);
4121                 val = CNIC_RD(dev, addr);
4122                 val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
4123                 if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
4124                         addr = BNX2X_SHMEM_ADDR(base,
4125                                 mf_cfg.func_mf_config[func].config);
4126                         val = CNIC_RD(dev, addr);
4127                         val &= FUNC_MF_CFG_PROTOCOL_MASK;
4128                         if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
4129                                 dev->max_iscsi_conn = 0;
4130                 }
4131         }
4132 }
4133
4134 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4135 {
4136         struct cnic_local *cp = dev->cnic_priv;
4137         int func = CNIC_FUNC(cp), ret, i;
4138         int port = CNIC_PORT(cp);
4139         u16 eq_idx;
4140         u8 sb_id = cp->status_blk_num;
4141
4142         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4143                                cp->iscsi_start_cid);
4144
4145         if (ret)
4146                 return -ENOMEM;
4147
4148         cp->kcq_io_addr = BAR_CSTRORM_INTMEM +
4149                           CSTORM_ISCSI_EQ_PROD_OFFSET(func, 0);
4150         cp->kcq_prod_idx = 0;
4151
4152         cnic_get_bnx2x_iscsi_info(dev);
4153
4154         /* Only 1 EQ */
4155         CNIC_WR16(dev, cp->kcq_io_addr, MAX_KCQ_IDX);
4156         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4157                 CSTORM_ISCSI_EQ_CONS_OFFSET(func, 0), 0);
4158         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4159                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0),
4160                 cp->kcq_info.pg_map_arr[1] & 0xffffffff);
4161         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4162                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0) + 4,
4163                 (u64) cp->kcq_info.pg_map_arr[1] >> 32);
4164         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4165                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0),
4166                 cp->kcq_info.pg_map_arr[0] & 0xffffffff);
4167         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4168                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0) + 4,
4169                 (u64) cp->kcq_info.pg_map_arr[0] >> 32);
4170         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4171                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(func, 0), 1);
4172         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4173                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(func, 0), cp->status_blk_num);
4174         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4175                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(func, 0),
4176                 HC_INDEX_C_ISCSI_EQ_CONS);
4177
4178         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4179                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4180                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i),
4181                         cp->conn_buf_info.pgtbl[2 * i]);
4182                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4183                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i) + 4,
4184                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4185         }
4186
4187         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4188                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func),
4189                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4190         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4191                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func) + 4,
4192                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4193
4194         cnic_setup_bnx2x_context(dev);
4195
4196         eq_idx = CNIC_RD16(dev, BAR_CSTRORM_INTMEM +
4197                            CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4198                            offsetof(struct cstorm_status_block_c,
4199                                     index_values[HC_INDEX_C_ISCSI_EQ_CONS]));
4200         if (eq_idx != 0) {
4201                 netdev_err(dev->netdev, "EQ cons index %x != 0\n", eq_idx);
4202                 return -EBUSY;
4203         }
4204         ret = cnic_init_bnx2x_irq(dev);
4205         if (ret)
4206                 return ret;
4207
4208         cnic_init_bnx2x_tx_ring(dev);
4209         cnic_init_bnx2x_rx_ring(dev);
4210
4211         return 0;
4212 }
4213
4214 static void cnic_init_rings(struct cnic_dev *dev)
4215 {
4216         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4217                 cnic_init_bnx2_tx_ring(dev);
4218                 cnic_init_bnx2_rx_ring(dev);
4219         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4220                 struct cnic_local *cp = dev->cnic_priv;
4221                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4222                 union l5cm_specific_data l5_data;
4223                 struct ustorm_eth_rx_producers rx_prods = {0};
4224                 u32 off, i;
4225
4226                 rx_prods.bd_prod = 0;
4227                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4228                 barrier();
4229
4230                 off = BAR_USTRORM_INTMEM +
4231                         USTORM_RX_PRODS_OFFSET(CNIC_PORT(cp), cli);
4232
4233                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4234                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4235
4236                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4237
4238                 cnic_init_bnx2x_tx_ring(dev);
4239                 cnic_init_bnx2x_rx_ring(dev);
4240
4241                 l5_data.phy_address.lo = cli;
4242                 l5_data.phy_address.hi = 0;
4243                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4244                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4245                 i = 0;
4246                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4247                        ++i < 10)
4248                         msleep(1);
4249
4250                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4251                         netdev_err(dev->netdev,
4252                                 "iSCSI CLIENT_SETUP did not complete\n");
4253                 cnic_kwq_completion(dev, 1);
4254                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
4255         }
4256 }
4257
4258 static void cnic_shutdown_rings(struct cnic_dev *dev)
4259 {
4260         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4261                 cnic_shutdown_bnx2_rx_ring(dev);
4262         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4263                 struct cnic_local *cp = dev->cnic_priv;
4264                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4265                 union l5cm_specific_data l5_data;
4266                 int i;
4267
4268                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0);
4269
4270                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4271
4272                 l5_data.phy_address.lo = cli;
4273                 l5_data.phy_address.hi = 0;
4274                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4275                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4276                 i = 0;
4277                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4278                        ++i < 10)
4279                         msleep(1);
4280
4281                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4282                         netdev_err(dev->netdev,
4283                                 "iSCSI CLIENT_HALT did not complete\n");
4284                 cnic_kwq_completion(dev, 1);
4285
4286                 memset(&l5_data, 0, sizeof(l5_data));
4287                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
4288                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE |
4289                         (1 << SPE_HDR_COMMON_RAMROD_SHIFT), &l5_data);
4290                 msleep(10);
4291         }
4292 }
4293
4294 static int cnic_register_netdev(struct cnic_dev *dev)
4295 {
4296         struct cnic_local *cp = dev->cnic_priv;
4297         struct cnic_eth_dev *ethdev = cp->ethdev;
4298         int err;
4299
4300         if (!ethdev)
4301                 return -ENODEV;
4302
4303         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
4304                 return 0;
4305
4306         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4307         if (err)
4308                 netdev_err(dev->netdev, "register_cnic failed\n");
4309
4310         return err;
4311 }
4312
4313 static void cnic_unregister_netdev(struct cnic_dev *dev)
4314 {
4315         struct cnic_local *cp = dev->cnic_priv;
4316         struct cnic_eth_dev *ethdev = cp->ethdev;
4317
4318         if (!ethdev)
4319                 return;
4320
4321         ethdev->drv_unregister_cnic(dev->netdev);
4322 }
4323
4324 static int cnic_start_hw(struct cnic_dev *dev)
4325 {
4326         struct cnic_local *cp = dev->cnic_priv;
4327         struct cnic_eth_dev *ethdev = cp->ethdev;
4328         int err;
4329
4330         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
4331                 return -EALREADY;
4332
4333         dev->regview = ethdev->io_base;
4334         cp->chip_id = ethdev->chip_id;
4335         pci_dev_get(dev->pcidev);
4336         cp->func = PCI_FUNC(dev->pcidev->devfn);
4337         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
4338         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
4339
4340         err = cp->alloc_resc(dev);
4341         if (err) {
4342                 netdev_err(dev->netdev, "allocate resource failure\n");
4343                 goto err1;
4344         }
4345
4346         err = cp->start_hw(dev);
4347         if (err)
4348                 goto err1;
4349
4350         err = cnic_cm_open(dev);
4351         if (err)
4352                 goto err1;
4353
4354         set_bit(CNIC_F_CNIC_UP, &dev->flags);
4355
4356         cp->enable_int(dev);
4357
4358         return 0;
4359
4360 err1:
4361         cp->free_resc(dev);
4362         pci_dev_put(dev->pcidev);
4363         return err;
4364 }
4365
4366 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
4367 {
4368         cnic_disable_bnx2_int_sync(dev);
4369
4370         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4371         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4372
4373         cnic_init_context(dev, KWQ_CID);
4374         cnic_init_context(dev, KCQ_CID);
4375
4376         cnic_setup_5709_context(dev, 0);
4377         cnic_free_irq(dev);
4378
4379         cnic_free_resc(dev);
4380 }
4381
4382
4383 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
4384 {
4385         struct cnic_local *cp = dev->cnic_priv;
4386         u8 sb_id = cp->status_blk_num;
4387         int port = CNIC_PORT(cp);
4388
4389         cnic_free_irq(dev);
4390         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4391                   CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4392                   offsetof(struct cstorm_status_block_c,
4393                            index_values[HC_INDEX_C_ISCSI_EQ_CONS]),
4394                   0);
4395         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4396                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->func, 0), 0);
4397         CNIC_WR16(dev, cp->kcq_io_addr, 0);
4398         cnic_free_resc(dev);
4399 }
4400
4401 static void cnic_stop_hw(struct cnic_dev *dev)
4402 {
4403         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4404                 struct cnic_local *cp = dev->cnic_priv;
4405                 int i = 0;
4406
4407                 /* Need to wait for the ring shutdown event to complete
4408                  * before clearing the CNIC_UP flag.
4409                  */
4410                 while (cp->uio_dev != -1 && i < 15) {
4411                         msleep(100);
4412                         i++;
4413                 }
4414                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
4415                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
4416                 synchronize_rcu();
4417                 cnic_cm_shutdown(dev);
4418                 cp->stop_hw(dev);
4419                 pci_dev_put(dev->pcidev);
4420         }
4421 }
4422
4423 static void cnic_free_dev(struct cnic_dev *dev)
4424 {
4425         int i = 0;
4426
4427         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
4428                 msleep(100);
4429                 i++;
4430         }
4431         if (atomic_read(&dev->ref_count) != 0)
4432                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
4433
4434         netdev_info(dev->netdev, "Removed CNIC device\n");
4435         dev_put(dev->netdev);
4436         kfree(dev);
4437 }
4438
4439 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
4440                                        struct pci_dev *pdev)
4441 {
4442         struct cnic_dev *cdev;
4443         struct cnic_local *cp;
4444         int alloc_size;
4445
4446         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
4447
4448         cdev = kzalloc(alloc_size , GFP_KERNEL);
4449         if (cdev == NULL) {
4450                 netdev_err(dev, "allocate dev struct failure\n");
4451                 return NULL;
4452         }
4453
4454         cdev->netdev = dev;
4455         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
4456         cdev->register_device = cnic_register_device;
4457         cdev->unregister_device = cnic_unregister_device;
4458         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
4459
4460         cp = cdev->cnic_priv;
4461         cp->dev = cdev;
4462         cp->uio_dev = -1;
4463         cp->l2_single_buf_size = 0x400;
4464         cp->l2_rx_ring_size = 3;
4465
4466         spin_lock_init(&cp->cnic_ulp_lock);
4467
4468         netdev_info(dev, "Added CNIC device\n");
4469
4470         return cdev;
4471 }
4472
4473 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
4474 {
4475         struct pci_dev *pdev;
4476         struct cnic_dev *cdev;
4477         struct cnic_local *cp;
4478         struct cnic_eth_dev *ethdev = NULL;
4479         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4480
4481         probe = symbol_get(bnx2_cnic_probe);
4482         if (probe) {
4483                 ethdev = (*probe)(dev);
4484                 symbol_put(bnx2_cnic_probe);
4485         }
4486         if (!ethdev)
4487                 return NULL;
4488
4489         pdev = ethdev->pdev;
4490         if (!pdev)
4491                 return NULL;
4492
4493         dev_hold(dev);
4494         pci_dev_get(pdev);
4495         if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
4496             pdev->device == PCI_DEVICE_ID_NX2_5709S) {
4497                 u8 rev;
4498
4499                 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
4500                 if (rev < 0x10) {
4501                         pci_dev_put(pdev);
4502                         goto cnic_err;
4503                 }
4504         }
4505         pci_dev_put(pdev);
4506
4507         cdev = cnic_alloc_dev(dev, pdev);
4508         if (cdev == NULL)
4509                 goto cnic_err;
4510
4511         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
4512         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
4513
4514         cp = cdev->cnic_priv;
4515         cp->ethdev = ethdev;
4516         cdev->pcidev = pdev;
4517
4518         cp->cnic_ops = &cnic_bnx2_ops;
4519         cp->start_hw = cnic_start_bnx2_hw;
4520         cp->stop_hw = cnic_stop_bnx2_hw;
4521         cp->setup_pgtbl = cnic_setup_page_tbl;
4522         cp->alloc_resc = cnic_alloc_bnx2_resc;
4523         cp->free_resc = cnic_free_resc;
4524         cp->start_cm = cnic_cm_init_bnx2_hw;
4525         cp->stop_cm = cnic_cm_stop_bnx2_hw;
4526         cp->enable_int = cnic_enable_bnx2_int;
4527         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
4528         cp->close_conn = cnic_close_bnx2_conn;
4529         cp->next_idx = cnic_bnx2_next_idx;
4530         cp->hw_idx = cnic_bnx2_hw_idx;
4531         return cdev;
4532
4533 cnic_err:
4534         dev_put(dev);
4535         return NULL;
4536 }
4537
4538 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
4539 {
4540         struct pci_dev *pdev;
4541         struct cnic_dev *cdev;
4542         struct cnic_local *cp;
4543         struct cnic_eth_dev *ethdev = NULL;
4544         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4545
4546         probe = symbol_get(bnx2x_cnic_probe);
4547         if (probe) {
4548                 ethdev = (*probe)(dev);
4549                 symbol_put(bnx2x_cnic_probe);
4550         }
4551         if (!ethdev)
4552                 return NULL;
4553
4554         pdev = ethdev->pdev;
4555         if (!pdev)
4556                 return NULL;
4557
4558         dev_hold(dev);
4559         cdev = cnic_alloc_dev(dev, pdev);
4560         if (cdev == NULL) {
4561                 dev_put(dev);
4562                 return NULL;
4563         }
4564
4565         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
4566         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
4567
4568         cp = cdev->cnic_priv;
4569         cp->ethdev = ethdev;
4570         cdev->pcidev = pdev;
4571
4572         cp->cnic_ops = &cnic_bnx2x_ops;
4573         cp->start_hw = cnic_start_bnx2x_hw;
4574         cp->stop_hw = cnic_stop_bnx2x_hw;
4575         cp->setup_pgtbl = cnic_setup_page_tbl_le;
4576         cp->alloc_resc = cnic_alloc_bnx2x_resc;
4577         cp->free_resc = cnic_free_resc;
4578         cp->start_cm = cnic_cm_init_bnx2x_hw;
4579         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
4580         cp->enable_int = cnic_enable_bnx2x_int;
4581         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
4582         cp->ack_int = cnic_ack_bnx2x_msix;
4583         cp->close_conn = cnic_close_bnx2x_conn;
4584         cp->next_idx = cnic_bnx2x_next_idx;
4585         cp->hw_idx = cnic_bnx2x_hw_idx;
4586         return cdev;
4587 }
4588
4589 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
4590 {
4591         struct ethtool_drvinfo drvinfo;
4592         struct cnic_dev *cdev = NULL;
4593
4594         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
4595                 memset(&drvinfo, 0, sizeof(drvinfo));
4596                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
4597
4598                 if (!strcmp(drvinfo.driver, "bnx2"))
4599                         cdev = init_bnx2_cnic(dev);
4600                 if (!strcmp(drvinfo.driver, "bnx2x"))
4601                         cdev = init_bnx2x_cnic(dev);
4602                 if (cdev) {
4603                         write_lock(&cnic_dev_lock);
4604                         list_add(&cdev->list, &cnic_dev_list);
4605                         write_unlock(&cnic_dev_lock);
4606                 }
4607         }
4608         return cdev;
4609 }
4610
4611 /**
4612  * netdev event handler
4613  */
4614 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
4615                                                          void *ptr)
4616 {
4617         struct net_device *netdev = ptr;
4618         struct cnic_dev *dev;
4619         int if_type;
4620         int new_dev = 0;
4621
4622         dev = cnic_from_netdev(netdev);
4623
4624         if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
4625                 /* Check for the hot-plug device */
4626                 dev = is_cnic_dev(netdev);
4627                 if (dev) {
4628                         new_dev = 1;
4629                         cnic_hold(dev);
4630                 }
4631         }
4632         if (dev) {
4633                 struct cnic_local *cp = dev->cnic_priv;
4634
4635                 if (new_dev)
4636                         cnic_ulp_init(dev);
4637                 else if (event == NETDEV_UNREGISTER)
4638                         cnic_ulp_exit(dev);
4639
4640                 if (event == NETDEV_UP) {
4641                         if (cnic_register_netdev(dev) != 0) {
4642                                 cnic_put(dev);
4643                                 goto done;
4644                         }
4645                         if (!cnic_start_hw(dev))
4646                                 cnic_ulp_start(dev);
4647                 }
4648
4649                 rcu_read_lock();
4650                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
4651                         struct cnic_ulp_ops *ulp_ops;
4652                         void *ctx;
4653
4654                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
4655                         if (!ulp_ops || !ulp_ops->indicate_netevent)
4656                                 continue;
4657
4658                         ctx = cp->ulp_handle[if_type];
4659
4660                         ulp_ops->indicate_netevent(ctx, event);
4661                 }
4662                 rcu_read_unlock();
4663
4664                 if (event == NETDEV_GOING_DOWN) {
4665                         cnic_ulp_stop(dev);
4666                         cnic_stop_hw(dev);
4667                         cnic_unregister_netdev(dev);
4668                 } else if (event == NETDEV_UNREGISTER) {
4669                         write_lock(&cnic_dev_lock);
4670                         list_del_init(&dev->list);
4671                         write_unlock(&cnic_dev_lock);
4672
4673                         cnic_put(dev);
4674                         cnic_free_dev(dev);
4675                         goto done;
4676                 }
4677                 cnic_put(dev);
4678         }
4679 done:
4680         return NOTIFY_DONE;
4681 }
4682
4683 static struct notifier_block cnic_netdev_notifier = {
4684         .notifier_call = cnic_netdev_event
4685 };
4686
4687 static void cnic_release(void)
4688 {
4689         struct cnic_dev *dev;
4690
4691         while (!list_empty(&cnic_dev_list)) {
4692                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
4693                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4694                         cnic_ulp_stop(dev);
4695                         cnic_stop_hw(dev);
4696                 }
4697
4698                 cnic_ulp_exit(dev);
4699                 cnic_unregister_netdev(dev);
4700                 list_del_init(&dev->list);
4701                 cnic_free_dev(dev);
4702         }
4703 }
4704
4705 static int __init cnic_init(void)
4706 {
4707         int rc = 0;
4708
4709         pr_info("%s", version);
4710
4711         rc = register_netdevice_notifier(&cnic_netdev_notifier);
4712         if (rc) {
4713                 cnic_release();
4714                 return rc;
4715         }
4716
4717         return 0;
4718 }
4719
4720 static void __exit cnic_exit(void)
4721 {
4722         unregister_netdevice_notifier(&cnic_netdev_notifier);
4723         cnic_release();
4724 }
4725
4726 module_init(cnic_init);
4727 module_exit(cnic_exit);