drivers/net/ethernet/broadcom/cnic.c

   1 /* cnic.c: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2012 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 ([email protected])
  10  * Modified and maintained by: Michael Chan <[email protected]>
  11  */
  12
  13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  14
  15 #include <linux/module.h>
  16
  17 #include <linux/kernel.h>
  18 #include <linux/errno.h>
  19 #include <linux/list.h>
  20 #include <linux/slab.h>
  21 #include <linux/pci.h>
  22 #include <linux/init.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/uio_driver.h>
  25 #include <linux/in.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/delay.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_vlan.h>
  30 #include <linux/prefetch.h>
  31 #include <linux/random.h>
  32 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
  33 #define BCM_VLAN 1
  34 #endif
  35 #include <net/ip.h>
  36 #include <net/tcp.h>
  37 #include <net/route.h>
  38 #include <net/ipv6.h>
  39 #include <net/ip6_route.h>
  40 #include <net/ip6_checksum.h>
  41 #include <scsi/iscsi_if.h>
  42
  43 #include "cnic_if.h"
  44 #include "bnx2.h"
  45 #include "bnx2x/bnx2x_reg.h"
  46 #include "bnx2x/bnx2x_fw_defs.h"
  47 #include "bnx2x/bnx2x_hsi.h"
  48 #include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
  49 #include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
  50 #include "cnic.h"
  51 #include "cnic_defs.h"
  52
  53 #define DRV_MODULE_NAME         "cnic"
  54
  55 static char version[] __devinitdata =
  56         "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  57
  58 MODULE_AUTHOR("Michael Chan <[email protected]> and John(Zongxi) "
  59               "Chen ([email protected]");
  60 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
  61 MODULE_LICENSE("GPL");
  62 MODULE_VERSION(CNIC_MODULE_VERSION);
  63
  64 /* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
  65 static LIST_HEAD(cnic_dev_list);
  66 static LIST_HEAD(cnic_udev_list);
  67 static DEFINE_RWLOCK(cnic_dev_lock);
  68 static DEFINE_MUTEX(cnic_lock);
  69
  70 static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  71
  72 /* helper function, assuming cnic_lock is held */
  73 static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
  74 {
  75         return rcu_dereference_protected(cnic_ulp_tbl[type],
  76                                          lockdep_is_held(&cnic_lock));
  77 }
  78
  79 static int cnic_service_bnx2(void *, void *);
  80 static int cnic_service_bnx2x(void *, void *);
  81 static int cnic_ctl(void *, struct cnic_ctl_info *);
  82
  83 static struct cnic_ops cnic_bnx2_ops = {
  84         .cnic_owner     = THIS_MODULE,
  85         .cnic_handler   = cnic_service_bnx2,
  86         .cnic_ctl       = cnic_ctl,
  87 };
  88
  89 static struct cnic_ops cnic_bnx2x_ops = {
  90         .cnic_owner     = THIS_MODULE,
  91         .cnic_handler   = cnic_service_bnx2x,
  92         .cnic_ctl       = cnic_ctl,
  93 };
  94
  95 static struct workqueue_struct *cnic_wq;
  96
  97 static void cnic_shutdown_rings(struct cnic_dev *);
  98 static void cnic_init_rings(struct cnic_dev *);
  99 static int cnic_cm_set_pg(struct cnic_sock *);
 100
 101 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
 102 {
 103         struct cnic_uio_dev *udev = uinfo->priv;
 104         struct cnic_dev *dev;
 105
 106         if (!capable(CAP_NET_ADMIN))
 107                 return -EPERM;
 108
 109         if (udev->uio_dev != -1)
 110                 return -EBUSY;
 111
 112         rtnl_lock();
 113         dev = udev->dev;
 114
 115         if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 116                 rtnl_unlock();
 117                 return -ENODEV;
 118         }
 119
 120         udev->uio_dev = iminor(inode);
 121
 122         cnic_shutdown_rings(dev);
 123         cnic_init_rings(dev);
 124         rtnl_unlock();
 125
 126         return 0;
 127 }
 128
 129 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 130 {
 131         struct cnic_uio_dev *udev = uinfo->priv;
 132
 133         udev->uio_dev = -1;
 134         return 0;
 135 }
 136
 137 static inline void cnic_hold(struct cnic_dev *dev)
 138 {
 139         atomic_inc(&dev->ref_count);
 140 }
 141
 142 static inline void cnic_put(struct cnic_dev *dev)
 143 {
 144         atomic_dec(&dev->ref_count);
 145 }
 146
 147 static inline void csk_hold(struct cnic_sock *csk)
 148 {
 149         atomic_inc(&csk->ref_count);
 150 }
 151
 152 static inline void csk_put(struct cnic_sock *csk)
 153 {
 154         atomic_dec(&csk->ref_count);
 155 }
 156
 157 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 158 {
 159         struct cnic_dev *cdev;
 160
 161         read_lock(&cnic_dev_lock);
 162         list_for_each_entry(cdev, &cnic_dev_list, list) {
 163                 if (netdev == cdev->netdev) {
 164                         cnic_hold(cdev);
 165                         read_unlock(&cnic_dev_lock);
 166                         return cdev;
 167                 }
 168         }
 169         read_unlock(&cnic_dev_lock);
 170         return NULL;
 171 }
 172
 173 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 174 {
 175         atomic_inc(&ulp_ops->ref_count);
 176 }
 177
 178 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 179 {
 180         atomic_dec(&ulp_ops->ref_count);
 181 }
 182
 183 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 184 {
 185         struct cnic_local *cp = dev->cnic_priv;
 186         struct cnic_eth_dev *ethdev = cp->ethdev;
 187         struct drv_ctl_info info;
 188         struct drv_ctl_io *io = &info.data.io;
 189
 190         info.cmd = DRV_CTL_CTX_WR_CMD;
 191         io->cid_addr = cid_addr;
 192         io->offset = off;
 193         io->data = val;
 194         ethdev->drv_ctl(dev->netdev, &info);
 195 }
 196
 197 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 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_io *io = &info.data.io;
 203
 204         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 205         io->offset = off;
 206         io->dma_addr = addr;
 207         ethdev->drv_ctl(dev->netdev, &info);
 208 }
 209
 210 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 211 {
 212         struct cnic_local *cp = dev->cnic_priv;
 213         struct cnic_eth_dev *ethdev = cp->ethdev;
 214         struct drv_ctl_info info;
 215         struct drv_ctl_l2_ring *ring = &info.data.ring;
 216
 217         if (start)
 218                 info.cmd = DRV_CTL_START_L2_CMD;
 219         else
 220                 info.cmd = DRV_CTL_STOP_L2_CMD;
 221
 222         ring->cid = cid;
 223         ring->client_id = cl_id;
 224         ethdev->drv_ctl(dev->netdev, &info);
 225 }
 226
 227 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 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_WR_CMD;
 235         io->offset = off;
 236         io->data = val;
 237         ethdev->drv_ctl(dev->netdev, &info);
 238 }
 239
 240 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 241 {
 242         struct cnic_local *cp = dev->cnic_priv;
 243         struct cnic_eth_dev *ethdev = cp->ethdev;
 244         struct drv_ctl_info info;
 245         struct drv_ctl_io *io = &info.data.io;
 246
 247         info.cmd = DRV_CTL_IO_RD_CMD;
 248         io->offset = off;
 249         ethdev->drv_ctl(dev->netdev, &info);
 250         return io->data;
 251 }
 252
 253 static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg)
 254 {
 255         struct cnic_local *cp = dev->cnic_priv;
 256         struct cnic_eth_dev *ethdev = cp->ethdev;
 257         struct drv_ctl_info info;
 258
 259         if (reg)
 260                 info.cmd = DRV_CTL_ULP_REGISTER_CMD;
 261         else
 262                 info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;
 263
 264         info.data.ulp_type = ulp_type;
 265         ethdev->drv_ctl(dev->netdev, &info);
 266 }
 267
 268 static int cnic_in_use(struct cnic_sock *csk)
 269 {
 270         return test_bit(SK_F_INUSE, &csk->flags);
 271 }
 272
 273 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
 274 {
 275         struct cnic_local *cp = dev->cnic_priv;
 276         struct cnic_eth_dev *ethdev = cp->ethdev;
 277         struct drv_ctl_info info;
 278
 279         info.cmd = cmd;
 280         info.data.credit.credit_count = count;
 281         ethdev->drv_ctl(dev->netdev, &info);
 282 }
 283
 284 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 285 {
 286         u32 i;
 287
 288         for (i = 0; i < cp->max_cid_space; i++) {
 289                 if (cp->ctx_tbl[i].cid == cid) {
 290                         *l5_cid = i;
 291                         return 0;
 292                 }
 293         }
 294         return -EINVAL;
 295 }
 296
 297 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 298                            struct cnic_sock *csk)
 299 {
 300         struct iscsi_path path_req;
 301         char *buf = NULL;
 302         u16 len = 0;
 303         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 304         struct cnic_ulp_ops *ulp_ops;
 305         struct cnic_uio_dev *udev = cp->udev;
 306         int rc = 0, retry = 0;
 307
 308         if (!udev || udev->uio_dev == -1)
 309                 return -ENODEV;
 310
 311         if (csk) {
 312                 len = sizeof(path_req);
 313                 buf = (char *) &path_req;
 314                 memset(&path_req, 0, len);
 315
 316                 msg_type = ISCSI_KEVENT_PATH_REQ;
 317                 path_req.handle = (u64) csk->l5_cid;
 318                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 319                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 320                                sizeof(struct in6_addr));
 321                         path_req.ip_addr_len = 16;
 322                 } else {
 323                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 324                                sizeof(struct in_addr));
 325                         path_req.ip_addr_len = 4;
 326                 }
 327                 path_req.vlan_id = csk->vlan_id;
 328                 path_req.pmtu = csk->mtu;
 329         }
 330
 331         while (retry < 3) {
 332                 rc = 0;
 333                 rcu_read_lock();
 334                 ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
 335                 if (ulp_ops)
 336                         rc = ulp_ops->iscsi_nl_send_msg(
 337                                 cp->ulp_handle[CNIC_ULP_ISCSI],
 338                                 msg_type, buf, len);
 339                 rcu_read_unlock();
 340                 if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
 341                         break;
 342
 343                 msleep(100);
 344                 retry++;
 345         }
 346         return rc;
 347 }
 348
 349 static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
 350
 351 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 352                                   char *buf, u16 len)
 353 {
 354         int rc = -EINVAL;
 355
 356         switch (msg_type) {
 357         case ISCSI_UEVENT_PATH_UPDATE: {
 358                 struct cnic_local *cp;
 359                 u32 l5_cid;
 360                 struct cnic_sock *csk;
 361                 struct iscsi_path *path_resp;
 362
 363                 if (len < sizeof(*path_resp))
 364                         break;
 365
 366                 path_resp = (struct iscsi_path *) buf;
 367                 cp = dev->cnic_priv;
 368                 l5_cid = (u32) path_resp->handle;
 369                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 370                         break;
 371
 372                 rcu_read_lock();
 373                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
 374                         rc = -ENODEV;
 375                         rcu_read_unlock();
 376                         break;
 377                 }
 378                 csk = &cp->csk_tbl[l5_cid];
 379                 csk_hold(csk);
 380                 if (cnic_in_use(csk) &&
 381                     test_bit(SK_F_CONNECT_START, &csk->flags)) {
 382
 383                         csk->vlan_id = path_resp->vlan_id;
 384
 385                         memcpy(csk->ha, path_resp->mac_addr, 6);
 386                         if (test_bit(SK_F_IPV6, &csk->flags))
 387                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 388                                        sizeof(struct in6_addr));
 389                         else
 390                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 391                                        sizeof(struct in_addr));
 392
 393                         if (is_valid_ether_addr(csk->ha)) {
 394                                 cnic_cm_set_pg(csk);
 395                         } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
 396                                 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 397
 398                                 cnic_cm_upcall(cp, csk,
 399                                         L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
 400                                 clear_bit(SK_F_CONNECT_START, &csk->flags);
 401                         }
 402                 }
 403                 csk_put(csk);
 404                 rcu_read_unlock();
 405                 rc = 0;
 406         }
 407         }
 408
 409         return rc;
 410 }
 411
 412 static int cnic_offld_prep(struct cnic_sock *csk)
 413 {
 414         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 415                 return 0;
 416
 417         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 418                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 419                 return 0;
 420         }
 421
 422         return 1;
 423 }
 424
 425 static int cnic_close_prep(struct cnic_sock *csk)
 426 {
 427         clear_bit(SK_F_CONNECT_START, &csk->flags);
 428         smp_mb__after_clear_bit();
 429
 430         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 431                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 432                         msleep(1);
 433
 434                 return 1;
 435         }
 436         return 0;
 437 }
 438
 439 static int cnic_abort_prep(struct cnic_sock *csk)
 440 {
 441         clear_bit(SK_F_CONNECT_START, &csk->flags);
 442         smp_mb__after_clear_bit();
 443
 444         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 445                 msleep(1);
 446
 447         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 448                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 449                 return 1;
 450         }
 451
 452         return 0;
 453 }
 454
 455 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 456 {
 457         struct cnic_dev *dev;
 458
 459         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 460                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 461                 return -EINVAL;
 462         }
 463         mutex_lock(&cnic_lock);
 464         if (cnic_ulp_tbl_prot(ulp_type)) {
 465                 pr_err("%s: Type %d has already been registered\n",
 466                        __func__, ulp_type);
 467                 mutex_unlock(&cnic_lock);
 468                 return -EBUSY;
 469         }
 470
 471         read_lock(&cnic_dev_lock);
 472         list_for_each_entry(dev, &cnic_dev_list, list) {
 473                 struct cnic_local *cp = dev->cnic_priv;
 474
 475                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 476         }
 477         read_unlock(&cnic_dev_lock);
 478
 479         atomic_set(&ulp_ops->ref_count, 0);
 480         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 481         mutex_unlock(&cnic_lock);
 482
 483         /* Prevent race conditions with netdev_event */
 484         rtnl_lock();
 485         list_for_each_entry(dev, &cnic_dev_list, list) {
 486                 struct cnic_local *cp = dev->cnic_priv;
 487
 488                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 489                         ulp_ops->cnic_init(dev);
 490         }
 491         rtnl_unlock();
 492
 493         return 0;
 494 }
 495
 496 int cnic_unregister_driver(int ulp_type)
 497 {
 498         struct cnic_dev *dev;
 499         struct cnic_ulp_ops *ulp_ops;
 500         int i = 0;
 501
 502         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 503                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 504                 return -EINVAL;
 505         }
 506         mutex_lock(&cnic_lock);
 507         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 508         if (!ulp_ops) {
 509                 pr_err("%s: Type %d has not been registered\n",
 510                        __func__, ulp_type);
 511                 goto out_unlock;
 512         }
 513         read_lock(&cnic_dev_lock);
 514         list_for_each_entry(dev, &cnic_dev_list, list) {
 515                 struct cnic_local *cp = dev->cnic_priv;
 516
 517                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 518                         pr_err("%s: Type %d still has devices registered\n",
 519                                __func__, ulp_type);
 520                         read_unlock(&cnic_dev_lock);
 521                         goto out_unlock;
 522                 }
 523         }
 524         read_unlock(&cnic_dev_lock);
 525
 526         RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);
 527
 528         mutex_unlock(&cnic_lock);
 529         synchronize_rcu();
 530         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 531                 msleep(100);
 532                 i++;
 533         }
 534
 535         if (atomic_read(&ulp_ops->ref_count) != 0)
 536                 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
 537         return 0;
 538
 539 out_unlock:
 540         mutex_unlock(&cnic_lock);
 541         return -EINVAL;
 542 }
 543
 544 static int cnic_start_hw(struct cnic_dev *);
 545 static void cnic_stop_hw(struct cnic_dev *);
 546
 547 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 548                                 void *ulp_ctx)
 549 {
 550         struct cnic_local *cp = dev->cnic_priv;
 551         struct cnic_ulp_ops *ulp_ops;
 552
 553         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 554                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 555                 return -EINVAL;
 556         }
 557         mutex_lock(&cnic_lock);
 558         if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
 559                 pr_err("%s: Driver with type %d has not been registered\n",
 560                        __func__, ulp_type);
 561                 mutex_unlock(&cnic_lock);
 562                 return -EAGAIN;
 563         }
 564         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 565                 pr_err("%s: Type %d has already been registered to this device\n",
 566                        __func__, ulp_type);
 567                 mutex_unlock(&cnic_lock);
 568                 return -EBUSY;
 569         }
 570
 571         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 572         cp->ulp_handle[ulp_type] = ulp_ctx;
 573         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 574         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 575         cnic_hold(dev);
 576
 577         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 578                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 579                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 580
 581         mutex_unlock(&cnic_lock);
 582
 583         cnic_ulp_ctl(dev, ulp_type, true);
 584
 585         return 0;
 586
 587 }
 588 EXPORT_SYMBOL(cnic_register_driver);
 589
 590 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 591 {
 592         struct cnic_local *cp = dev->cnic_priv;
 593         int i = 0;
 594
 595         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 596                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 597                 return -EINVAL;
 598         }
 599         mutex_lock(&cnic_lock);
 600         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 601                 RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
 602                 cnic_put(dev);
 603         } else {
 604                 pr_err("%s: device not registered to this ulp type %d\n",
 605                        __func__, ulp_type);
 606                 mutex_unlock(&cnic_lock);
 607                 return -EINVAL;
 608         }
 609         mutex_unlock(&cnic_lock);
 610
 611         if (ulp_type == CNIC_ULP_ISCSI)
 612                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 613
 614         synchronize_rcu();
 615
 616         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 617                i < 20) {
 618                 msleep(100);
 619                 i++;
 620         }
 621         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 622                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 623
 624         cnic_ulp_ctl(dev, ulp_type, false);
 625
 626         return 0;
 627 }
 628 EXPORT_SYMBOL(cnic_unregister_driver);
 629
 630 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
 631                             u32 next)
 632 {
 633         id_tbl->start = start_id;
 634         id_tbl->max = size;
 635         id_tbl->next = next;
 636         spin_lock_init(&id_tbl->lock);
 637         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 638         if (!id_tbl->table)
 639                 return -ENOMEM;
 640
 641         return 0;
 642 }
 643
 644 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 645 {
 646         kfree(id_tbl->table);
 647         id_tbl->table = NULL;
 648 }
 649
 650 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 651 {
 652         int ret = -1;
 653
 654         id -= id_tbl->start;
 655         if (id >= id_tbl->max)
 656                 return ret;
 657
 658         spin_lock(&id_tbl->lock);
 659         if (!test_bit(id, id_tbl->table)) {
 660                 set_bit(id, id_tbl->table);
 661                 ret = 0;
 662         }
 663         spin_unlock(&id_tbl->lock);
 664         return ret;
 665 }
 666
 667 /* Returns -1 if not successful */
 668 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 669 {
 670         u32 id;
 671
 672         spin_lock(&id_tbl->lock);
 673         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 674         if (id >= id_tbl->max) {
 675                 id = -1;
 676                 if (id_tbl->next != 0) {
 677                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 678                         if (id >= id_tbl->next)
 679                                 id = -1;
 680                 }
 681         }
 682
 683         if (id < id_tbl->max) {
 684                 set_bit(id, id_tbl->table);
 685                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 686                 id += id_tbl->start;
 687         }
 688
 689         spin_unlock(&id_tbl->lock);
 690
 691         return id;
 692 }
 693
 694 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 695 {
 696         if (id == -1)
 697                 return;
 698
 699         id -= id_tbl->start;
 700         if (id >= id_tbl->max)
 701                 return;
 702
 703         clear_bit(id, id_tbl->table);
 704 }
 705
 706 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 707 {
 708         int i;
 709
 710         if (!dma->pg_arr)
 711                 return;
 712
 713         for (i = 0; i < dma->num_pages; i++) {
 714                 if (dma->pg_arr[i]) {
 715                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
 716                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 717                         dma->pg_arr[i] = NULL;
 718                 }
 719         }
 720         if (dma->pgtbl) {
 721                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 722                                   dma->pgtbl, dma->pgtbl_map);
 723                 dma->pgtbl = NULL;
 724         }
 725         kfree(dma->pg_arr);
 726         dma->pg_arr = NULL;
 727         dma->num_pages = 0;
 728 }
 729
 730 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 731 {
 732         int i;
 733         __le32 *page_table = (__le32 *) dma->pgtbl;
 734
 735         for (i = 0; i < dma->num_pages; i++) {
 736                 /* Each entry needs to be in big endian format. */
 737                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 738                 page_table++;
 739                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 740                 page_table++;
 741         }
 742 }
 743
 744 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 745 {
 746         int i;
 747         __le32 *page_table = (__le32 *) dma->pgtbl;
 748
 749         for (i = 0; i < dma->num_pages; i++) {
 750                 /* Each entry needs to be in little endian format. */
 751                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 752                 page_table++;
 753                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 754                 page_table++;
 755         }
 756 }
 757
 758 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 759                           int pages, int use_pg_tbl)
 760 {
 761         int i, size;
 762         struct cnic_local *cp = dev->cnic_priv;
 763
 764         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 765         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 766         if (dma->pg_arr == NULL)
 767                 return -ENOMEM;
 768
 769         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 770         dma->num_pages = pages;
 771
 772         for (i = 0; i < pages; i++) {
 773                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 774                                                     BCM_PAGE_SIZE,
 775                                                     &dma->pg_map_arr[i],
 776                                                     GFP_ATOMIC);
 777                 if (dma->pg_arr[i] == NULL)
 778                         goto error;
 779         }
 780         if (!use_pg_tbl)
 781                 return 0;
 782
 783         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 784                           ~(BCM_PAGE_SIZE - 1);
 785         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 786                                         &dma->pgtbl_map, GFP_ATOMIC);
 787         if (dma->pgtbl == NULL)
 788                 goto error;
 789
 790         cp->setup_pgtbl(dev, dma);
 791
 792         return 0;
 793
 794 error:
 795         cnic_free_dma(dev, dma);
 796         return -ENOMEM;
 797 }
 798
 799 static void cnic_free_context(struct cnic_dev *dev)
 800 {
 801         struct cnic_local *cp = dev->cnic_priv;
 802         int i;
 803
 804         for (i = 0; i < cp->ctx_blks; i++) {
 805                 if (cp->ctx_arr[i].ctx) {
 806                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 807                                           cp->ctx_arr[i].ctx,
 808                                           cp->ctx_arr[i].mapping);
 809                         cp->ctx_arr[i].ctx = NULL;
 810                 }
 811         }
 812 }
 813
 814 static void __cnic_free_uio(struct cnic_uio_dev *udev)
 815 {
 816         uio_unregister_device(&udev->cnic_uinfo);
 817
 818         if (udev->l2_buf) {
 819                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 820                                   udev->l2_buf, udev->l2_buf_map);
 821                 udev->l2_buf = NULL;
 822         }
 823
 824         if (udev->l2_ring) {
 825                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 826                                   udev->l2_ring, udev->l2_ring_map);
 827                 udev->l2_ring = NULL;
 828         }
 829
 830         pci_dev_put(udev->pdev);
 831         kfree(udev);
 832 }
 833
 834 static void cnic_free_uio(struct cnic_uio_dev *udev)
 835 {
 836         if (!udev)
 837                 return;
 838
 839         write_lock(&cnic_dev_lock);
 840         list_del_init(&udev->list);
 841         write_unlock(&cnic_dev_lock);
 842         __cnic_free_uio(udev);
 843 }
 844
 845 static void cnic_free_resc(struct cnic_dev *dev)
 846 {
 847         struct cnic_local *cp = dev->cnic_priv;
 848         struct cnic_uio_dev *udev = cp->udev;
 849
 850         if (udev) {
 851                 udev->dev = NULL;
 852                 cp->udev = NULL;
 853         }
 854
 855         cnic_free_context(dev);
 856         kfree(cp->ctx_arr);
 857         cp->ctx_arr = NULL;
 858         cp->ctx_blks = 0;
 859
 860         cnic_free_dma(dev, &cp->gbl_buf_info);
 861         cnic_free_dma(dev, &cp->kwq_info);
 862         cnic_free_dma(dev, &cp->kwq_16_data_info);
 863         cnic_free_dma(dev, &cp->kcq2.dma);
 864         cnic_free_dma(dev, &cp->kcq1.dma);
 865         kfree(cp->iscsi_tbl);
 866         cp->iscsi_tbl = NULL;
 867         kfree(cp->ctx_tbl);
 868         cp->ctx_tbl = NULL;
 869
 870         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
 871         cnic_free_id_tbl(&cp->cid_tbl);
 872 }
 873
 874 static int cnic_alloc_context(struct cnic_dev *dev)
 875 {
 876         struct cnic_local *cp = dev->cnic_priv;
 877
 878         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 879                 int i, k, arr_size;
 880
 881                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 882                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 883                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 884                            sizeof(struct cnic_ctx);
 885                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 886                 if (cp->ctx_arr == NULL)
 887                         return -ENOMEM;
 888
 889                 k = 0;
 890                 for (i = 0; i < 2; i++) {
 891                         u32 j, reg, off, lo, hi;
 892
 893                         if (i == 0)
 894                                 off = BNX2_PG_CTX_MAP;
 895                         else
 896                                 off = BNX2_ISCSI_CTX_MAP;
 897
 898                         reg = cnic_reg_rd_ind(dev, off);
 899                         lo = reg >> 16;
 900                         hi = reg & 0xffff;
 901                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 902                                 cp->ctx_arr[k].cid = j;
 903                 }
 904
 905                 cp->ctx_blks = k;
 906                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 907                         cp->ctx_blks = 0;
 908                         return -ENOMEM;
 909                 }
 910
 911                 for (i = 0; i < cp->ctx_blks; i++) {
 912                         cp->ctx_arr[i].ctx =
 913                                 dma_alloc_coherent(&dev->pcidev->dev,
 914                                                    BCM_PAGE_SIZE,
 915                                                    &cp->ctx_arr[i].mapping,
 916                                                    GFP_KERNEL);
 917                         if (cp->ctx_arr[i].ctx == NULL)
 918                                 return -ENOMEM;
 919                 }
 920         }
 921         return 0;
 922 }
 923
 924 static u16 cnic_bnx2_next_idx(u16 idx)
 925 {
 926         return idx + 1;
 927 }
 928
 929 static u16 cnic_bnx2_hw_idx(u16 idx)
 930 {
 931         return idx;
 932 }
 933
 934 static u16 cnic_bnx2x_next_idx(u16 idx)
 935 {
 936         idx++;
 937         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 938                 idx++;
 939
 940         return idx;
 941 }
 942
 943 static u16 cnic_bnx2x_hw_idx(u16 idx)
 944 {
 945         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 946                 idx++;
 947         return idx;
 948 }
 949
 950 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
 951                           bool use_pg_tbl)
 952 {
 953         int err, i, use_page_tbl = 0;
 954         struct kcqe **kcq;
 955
 956         if (use_pg_tbl)
 957                 use_page_tbl = 1;
 958
 959         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
 960         if (err)
 961                 return err;
 962
 963         kcq = (struct kcqe **) info->dma.pg_arr;
 964         info->kcq = kcq;
 965
 966         info->next_idx = cnic_bnx2_next_idx;
 967         info->hw_idx = cnic_bnx2_hw_idx;
 968         if (use_pg_tbl)
 969                 return 0;
 970
 971         info->next_idx = cnic_bnx2x_next_idx;
 972         info->hw_idx = cnic_bnx2x_hw_idx;
 973
 974         for (i = 0; i < KCQ_PAGE_CNT; i++) {
 975                 struct bnx2x_bd_chain_next *next =
 976                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
 977                 int j = i + 1;
 978
 979                 if (j >= KCQ_PAGE_CNT)
 980                         j = 0;
 981                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
 982                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
 983         }
 984         return 0;
 985 }
 986
 987 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
 988 {
 989         struct cnic_local *cp = dev->cnic_priv;
 990         struct cnic_uio_dev *udev;
 991
 992         read_lock(&cnic_dev_lock);
 993         list_for_each_entry(udev, &cnic_udev_list, list) {
 994                 if (udev->pdev == dev->pcidev) {
 995                         udev->dev = dev;
 996                         cp->udev = udev;
 997                         read_unlock(&cnic_dev_lock);
 998                         return 0;
 999                 }
1000         }
1001         read_unlock(&cnic_dev_lock);
1002
1003         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
1004         if (!udev)
1005                 return -ENOMEM;
1006
1007         udev->uio_dev = -1;
1008
1009         udev->dev = dev;
1010         udev->pdev = dev->pcidev;
1011         udev->l2_ring_size = pages * BCM_PAGE_SIZE;
1012         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
1013                                            &udev->l2_ring_map,
1014                                            GFP_KERNEL | __GFP_COMP);
1015         if (!udev->l2_ring)
1016                 goto err_udev;
1017
1018         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
1019         udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
1020         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1021                                           &udev->l2_buf_map,
1022                                           GFP_KERNEL | __GFP_COMP);
1023         if (!udev->l2_buf)
1024                 goto err_dma;
1025
1026         write_lock(&cnic_dev_lock);
1027         list_add(&udev->list, &cnic_udev_list);
1028         write_unlock(&cnic_dev_lock);
1029
1030         pci_dev_get(udev->pdev);
1031
1032         cp->udev = udev;
1033
1034         return 0;
1035  err_dma:
1036         dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
1037                           udev->l2_ring, udev->l2_ring_map);
1038  err_udev:
1039         kfree(udev);
1040         return -ENOMEM;
1041 }
1042
1043 static int cnic_init_uio(struct cnic_dev *dev)
1044 {
1045         struct cnic_local *cp = dev->cnic_priv;
1046         struct cnic_uio_dev *udev = cp->udev;
1047         struct uio_info *uinfo;
1048         int ret = 0;
1049
1050         if (!udev)
1051                 return -ENOMEM;
1052
1053         uinfo = &udev->cnic_uinfo;
1054
1055         uinfo->mem[0].addr = dev->netdev->base_addr;
1056         uinfo->mem[0].internal_addr = dev->regview;
1057         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
1058         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1059
1060         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1061                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1062                                         PAGE_MASK;
1063                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1064                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1065                 else
1066                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1067
1068                 uinfo->name = "bnx2_cnic";
1069         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1070                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1071                         PAGE_MASK;
1072                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1073
1074                 uinfo->name = "bnx2x_cnic";
1075         }
1076
1077         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1078
1079         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1080         uinfo->mem[2].size = udev->l2_ring_size;
1081         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1082
1083         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1084         uinfo->mem[3].size = udev->l2_buf_size;
1085         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1086
1087         uinfo->version = CNIC_MODULE_VERSION;
1088         uinfo->irq = UIO_IRQ_CUSTOM;
1089
1090         uinfo->open = cnic_uio_open;
1091         uinfo->release = cnic_uio_close;
1092
1093         if (udev->uio_dev == -1) {
1094                 if (!uinfo->priv) {
1095                         uinfo->priv = udev;
1096
1097                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1098                 }
1099         } else {
1100                 cnic_init_rings(dev);
1101         }
1102
1103         return ret;
1104 }
1105
1106 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1107 {
1108         struct cnic_local *cp = dev->cnic_priv;
1109         int ret;
1110
1111         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1112         if (ret)
1113                 goto error;
1114         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1115
1116         ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1117         if (ret)
1118                 goto error;
1119
1120         ret = cnic_alloc_context(dev);
1121         if (ret)
1122                 goto error;
1123
1124         ret = cnic_alloc_uio_rings(dev, 2);
1125         if (ret)
1126                 goto error;
1127
1128         ret = cnic_init_uio(dev);
1129         if (ret)
1130                 goto error;
1131
1132         return 0;
1133
1134 error:
1135         cnic_free_resc(dev);
1136         return ret;
1137 }
1138
1139 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1140 {
1141         struct cnic_local *cp = dev->cnic_priv;
1142         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1143         int total_mem, blks, i;
1144
1145         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1146         blks = total_mem / ctx_blk_size;
1147         if (total_mem % ctx_blk_size)
1148                 blks++;
1149
1150         if (blks > cp->ethdev->ctx_tbl_len)
1151                 return -ENOMEM;
1152
1153         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1154         if (cp->ctx_arr == NULL)
1155                 return -ENOMEM;
1156
1157         cp->ctx_blks = blks;
1158         cp->ctx_blk_size = ctx_blk_size;
1159         if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1160                 cp->ctx_align = 0;
1161         else
1162                 cp->ctx_align = ctx_blk_size;
1163
1164         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1165
1166         for (i = 0; i < blks; i++) {
1167                 cp->ctx_arr[i].ctx =
1168                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1169                                            &cp->ctx_arr[i].mapping,
1170                                            GFP_KERNEL);
1171                 if (cp->ctx_arr[i].ctx == NULL)
1172                         return -ENOMEM;
1173
1174                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1175                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1176                                 cnic_free_context(dev);
1177                                 cp->ctx_blk_size += cp->ctx_align;
1178                                 i = -1;
1179                                 continue;
1180                         }
1181                 }
1182         }
1183         return 0;
1184 }
1185
1186 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1187 {
1188         struct cnic_local *cp = dev->cnic_priv;
1189         struct cnic_eth_dev *ethdev = cp->ethdev;
1190         u32 start_cid = ethdev->starting_cid;
1191         int i, j, n, ret, pages;
1192         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1193
1194         cp->iro_arr = ethdev->iro_arr;
1195
1196         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1197         cp->iscsi_start_cid = start_cid;
1198         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1199
1200         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1201                 cp->max_cid_space += dev->max_fcoe_conn;
1202                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1203                 if (!cp->fcoe_init_cid)
1204                         cp->fcoe_init_cid = 0x10;
1205         }
1206
1207         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1208                                 GFP_KERNEL);
1209         if (!cp->iscsi_tbl)
1210                 goto error;
1211
1212         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1213                                 cp->max_cid_space, GFP_KERNEL);
1214         if (!cp->ctx_tbl)
1215                 goto error;
1216
1217         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1218                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1219                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1220         }
1221
1222         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1223                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1224
1225         pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1226                 PAGE_SIZE;
1227
1228         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1229         if (ret)
1230                 return -ENOMEM;
1231
1232         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1233         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1234                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1235
1236                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1237                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1238                                                    off;
1239
1240                 if ((i % n) == (n - 1))
1241                         j++;
1242         }
1243
1244         ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1245         if (ret)
1246                 goto error;
1247
1248         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1249                 ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1250                 if (ret)
1251                         goto error;
1252         }
1253
1254         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1255         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1256         if (ret)
1257                 goto error;
1258
1259         ret = cnic_alloc_bnx2x_context(dev);
1260         if (ret)
1261                 goto error;
1262
1263         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1264
1265         cp->l2_rx_ring_size = 15;
1266
1267         ret = cnic_alloc_uio_rings(dev, 4);
1268         if (ret)
1269                 goto error;
1270
1271         ret = cnic_init_uio(dev);
1272         if (ret)
1273                 goto error;
1274
1275         return 0;
1276
1277 error:
1278         cnic_free_resc(dev);
1279         return -ENOMEM;
1280 }
1281
1282 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1283 {
1284         return cp->max_kwq_idx -
1285                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1286 }
1287
1288 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1289                                   u32 num_wqes)
1290 {
1291         struct cnic_local *cp = dev->cnic_priv;
1292         struct kwqe *prod_qe;
1293         u16 prod, sw_prod, i;
1294
1295         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1296                 return -EAGAIN;         /* bnx2 is down */
1297
1298         spin_lock_bh(&cp->cnic_ulp_lock);
1299         if (num_wqes > cnic_kwq_avail(cp) &&
1300             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1301                 spin_unlock_bh(&cp->cnic_ulp_lock);
1302                 return -EAGAIN;
1303         }
1304
1305         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1306
1307         prod = cp->kwq_prod_idx;
1308         sw_prod = prod & MAX_KWQ_IDX;
1309         for (i = 0; i < num_wqes; i++) {
1310                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1311                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1312                 prod++;
1313                 sw_prod = prod & MAX_KWQ_IDX;
1314         }
1315         cp->kwq_prod_idx = prod;
1316
1317         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1318
1319         spin_unlock_bh(&cp->cnic_ulp_lock);
1320         return 0;
1321 }
1322
1323 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1324                                    union l5cm_specific_data *l5_data)
1325 {
1326         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1327         dma_addr_t map;
1328
1329         map = ctx->kwqe_data_mapping;
1330         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1331         l5_data->phy_address.hi = (u64) map >> 32;
1332         return ctx->kwqe_data;
1333 }
1334
1335 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1336                                 u32 type, union l5cm_specific_data *l5_data)
1337 {
1338         struct cnic_local *cp = dev->cnic_priv;
1339         struct l5cm_spe kwqe;
1340         struct kwqe_16 *kwq[1];
1341         u16 type_16;
1342         int ret;
1343
1344         kwqe.hdr.conn_and_cmd_data =
1345                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1346                              BNX2X_HW_CID(cp, cid)));
1347
1348         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1349         type_16 |= (cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1350                    SPE_HDR_FUNCTION_ID;
1351
1352         kwqe.hdr.type = cpu_to_le16(type_16);
1353         kwqe.hdr.reserved1 = 0;
1354         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1355         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1356
1357         kwq[0] = (struct kwqe_16 *) &kwqe;
1358
1359         spin_lock_bh(&cp->cnic_ulp_lock);
1360         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1361         spin_unlock_bh(&cp->cnic_ulp_lock);
1362
1363         if (ret == 1)
1364                 return 0;
1365
1366         return ret;
1367 }
1368
1369 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1370                                    struct kcqe *cqes[], u32 num_cqes)
1371 {
1372         struct cnic_local *cp = dev->cnic_priv;
1373         struct cnic_ulp_ops *ulp_ops;
1374
1375         rcu_read_lock();
1376         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1377         if (likely(ulp_ops)) {
1378                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1379                                           cqes, num_cqes);
1380         }
1381         rcu_read_unlock();
1382 }
1383
1384 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1385 {
1386         struct cnic_local *cp = dev->cnic_priv;
1387         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1388         int hq_bds, pages;
1389         u32 pfid = cp->pfid;
1390
1391         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1392         cp->num_ccells = req1->num_ccells_per_conn;
1393         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1394                               cp->num_iscsi_tasks;
1395         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1396                         BNX2X_ISCSI_R2TQE_SIZE;
1397         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1398         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1399         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1400         cp->num_cqs = req1->num_cqs;
1401
1402         if (!dev->max_iscsi_conn)
1403                 return 0;
1404
1405         /* init Tstorm RAM */
1406         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1407                   req1->rq_num_wqes);
1408         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1409                   PAGE_SIZE);
1410         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1411                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1412         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1413                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1414                   req1->num_tasks_per_conn);
1415
1416         /* init Ustorm RAM */
1417         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1418                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1419                   req1->rq_buffer_size);
1420         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1421                   PAGE_SIZE);
1422         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1423                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1424         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1425                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1426                   req1->num_tasks_per_conn);
1427         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1428                   req1->rq_num_wqes);
1429         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1430                   req1->cq_num_wqes);
1431         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1432                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1433
1434         /* init Xstorm RAM */
1435         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1436                   PAGE_SIZE);
1437         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1438                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1439         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1440                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1441                   req1->num_tasks_per_conn);
1442         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1443                   hq_bds);
1444         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1445                   req1->num_tasks_per_conn);
1446         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1447                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1448
1449         /* init Cstorm RAM */
1450         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1451                   PAGE_SIZE);
1452         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1453                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1454         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1455                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1456                   req1->num_tasks_per_conn);
1457         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1458                   req1->cq_num_wqes);
1459         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1460                   hq_bds);
1461
1462         return 0;
1463 }
1464
1465 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1466 {
1467         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1468         struct cnic_local *cp = dev->cnic_priv;
1469         u32 pfid = cp->pfid;
1470         struct iscsi_kcqe kcqe;
1471         struct kcqe *cqes[1];
1472
1473         memset(&kcqe, 0, sizeof(kcqe));
1474         if (!dev->max_iscsi_conn) {
1475                 kcqe.completion_status =
1476                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1477                 goto done;
1478         }
1479
1480         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1481                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1482         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1483                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1484                 req2->error_bit_map[1]);
1485
1486         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1487                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1488         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1489                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1490         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1491                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1492                 req2->error_bit_map[1]);
1493
1494         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1495                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1496
1497         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1498
1499 done:
1500         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1501         cqes[0] = (struct kcqe *) &kcqe;
1502         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1503
1504         return 0;
1505 }
1506
1507 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1508 {
1509         struct cnic_local *cp = dev->cnic_priv;
1510         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1511
1512         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1513                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1514
1515                 cnic_free_dma(dev, &iscsi->hq_info);
1516                 cnic_free_dma(dev, &iscsi->r2tq_info);
1517                 cnic_free_dma(dev, &iscsi->task_array_info);
1518                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1519         } else {
1520                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1521         }
1522
1523         ctx->cid = 0;
1524 }
1525
1526 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1527 {
1528         u32 cid;
1529         int ret, pages;
1530         struct cnic_local *cp = dev->cnic_priv;
1531         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1532         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1533
1534         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1535                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1536                 if (cid == -1) {
1537                         ret = -ENOMEM;
1538                         goto error;
1539                 }
1540                 ctx->cid = cid;
1541                 return 0;
1542         }
1543
1544         cid = cnic_alloc_new_id(&cp->cid_tbl);
1545         if (cid == -1) {
1546                 ret = -ENOMEM;
1547                 goto error;
1548         }
1549
1550         ctx->cid = cid;
1551         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1552
1553         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1554         if (ret)
1555                 goto error;
1556
1557         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1558         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1559         if (ret)
1560                 goto error;
1561
1562         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1563         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1564         if (ret)
1565                 goto error;
1566
1567         return 0;
1568
1569 error:
1570         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1571         return ret;
1572 }
1573
1574 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1575                                 struct regpair *ctx_addr)
1576 {
1577         struct cnic_local *cp = dev->cnic_priv;
1578         struct cnic_eth_dev *ethdev = cp->ethdev;
1579         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1580         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1581         unsigned long align_off = 0;
1582         dma_addr_t ctx_map;
1583         void *ctx;
1584
1585         if (cp->ctx_align) {
1586                 unsigned long mask = cp->ctx_align - 1;
1587
1588                 if (cp->ctx_arr[blk].mapping & mask)
1589                         align_off = cp->ctx_align -
1590                                     (cp->ctx_arr[blk].mapping & mask);
1591         }
1592         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1593                 (off * BNX2X_CONTEXT_MEM_SIZE);
1594         ctx = cp->ctx_arr[blk].ctx + align_off +
1595               (off * BNX2X_CONTEXT_MEM_SIZE);
1596         if (init)
1597                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1598
1599         ctx_addr->lo = ctx_map & 0xffffffff;
1600         ctx_addr->hi = (u64) ctx_map >> 32;
1601         return ctx;
1602 }
1603
1604 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1605                                 u32 num)
1606 {
1607         struct cnic_local *cp = dev->cnic_priv;
1608         struct iscsi_kwqe_conn_offload1 *req1 =
1609                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1610         struct iscsi_kwqe_conn_offload2 *req2 =
1611                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1612         struct iscsi_kwqe_conn_offload3 *req3;
1613         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1614         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1615         u32 cid = ctx->cid;
1616         u32 hw_cid = BNX2X_HW_CID(cp, cid);
1617         struct iscsi_context *ictx;
1618         struct regpair context_addr;
1619         int i, j, n = 2, n_max;
1620         u8 port = CNIC_PORT(cp);
1621
1622         ctx->ctx_flags = 0;
1623         if (!req2->num_additional_wqes)
1624                 return -EINVAL;
1625
1626         n_max = req2->num_additional_wqes + 2;
1627
1628         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1629         if (ictx == NULL)
1630                 return -ENOMEM;
1631
1632         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1633
1634         ictx->xstorm_ag_context.hq_prod = 1;
1635
1636         ictx->xstorm_st_context.iscsi.first_burst_length =
1637                 ISCSI_DEF_FIRST_BURST_LEN;
1638         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1639                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1640         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1641                 req1->sq_page_table_addr_lo;
1642         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1643                 req1->sq_page_table_addr_hi;
1644         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1645         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1646         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1647                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1648         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1649                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1650         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1651                 iscsi->hq_info.pgtbl[0];
1652         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1653                 iscsi->hq_info.pgtbl[1];
1654         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1655                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1656         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1657                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1658         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1659                 iscsi->r2tq_info.pgtbl[0];
1660         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1661                 iscsi->r2tq_info.pgtbl[1];
1662         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1663                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1664         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1665                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1666         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1667                 BNX2X_ISCSI_PBL_NOT_CACHED;
1668         ictx->xstorm_st_context.iscsi.flags.flags |=
1669                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1670         ictx->xstorm_st_context.iscsi.flags.flags |=
1671                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1672         ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1673                 ETH_P_8021Q;
1674         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
1675                 cp->port_mode == CHIP_2_PORT_MODE) {
1676
1677                 port = 0;
1678         }
1679         ictx->xstorm_st_context.common.flags =
1680                 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1681         ictx->xstorm_st_context.common.flags =
1682                 port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1683
1684         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1685         /* TSTORM requires the base address of RQ DB & not PTE */
1686         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1687                 req2->rq_page_table_addr_lo & PAGE_MASK;
1688         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1689                 req2->rq_page_table_addr_hi;
1690         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1691         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1692         ictx->tstorm_st_context.tcp.flags2 |=
1693                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1694         ictx->tstorm_st_context.tcp.ooo_support_mode =
1695                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1696
1697         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1698
1699         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1700                 req2->rq_page_table_addr_lo;
1701         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1702                 req2->rq_page_table_addr_hi;
1703         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1704         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1705         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1706                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1707         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1708                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1709         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1710                 iscsi->r2tq_info.pgtbl[0];
1711         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1712                 iscsi->r2tq_info.pgtbl[1];
1713         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1714                 req1->cq_page_table_addr_lo;
1715         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1716                 req1->cq_page_table_addr_hi;
1717         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1718         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1719         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1720         ictx->ustorm_st_context.task_pbe_cache_index =
1721                 BNX2X_ISCSI_PBL_NOT_CACHED;
1722         ictx->ustorm_st_context.task_pdu_cache_index =
1723                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1724
1725         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1726                 if (j == 3) {
1727                         if (n >= n_max)
1728                                 break;
1729                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1730                         j = 0;
1731                 }
1732                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1733                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1734                         req3->qp_first_pte[j].hi;
1735                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1736                         req3->qp_first_pte[j].lo;
1737         }
1738
1739         ictx->ustorm_st_context.task_pbl_base.lo =
1740                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1741         ictx->ustorm_st_context.task_pbl_base.hi =
1742                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1743         ictx->ustorm_st_context.tce_phy_addr.lo =
1744                 iscsi->task_array_info.pgtbl[0];
1745         ictx->ustorm_st_context.tce_phy_addr.hi =
1746                 iscsi->task_array_info.pgtbl[1];
1747         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1748         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1749         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1750         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1751                 ISCSI_DEF_MAX_BURST_LEN;
1752         ictx->ustorm_st_context.negotiated_rx |=
1753                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1754                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1755
1756         ictx->cstorm_st_context.hq_pbl_base.lo =
1757                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1758         ictx->cstorm_st_context.hq_pbl_base.hi =
1759                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1760         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1761         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1762         ictx->cstorm_st_context.task_pbl_base.lo =
1763                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1764         ictx->cstorm_st_context.task_pbl_base.hi =
1765                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1766         /* CSTORM and USTORM initialization is different, CSTORM requires
1767          * CQ DB base & not PTE addr */
1768         ictx->cstorm_st_context.cq_db_base.lo =
1769                 req1->cq_page_table_addr_lo & PAGE_MASK;
1770         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1771         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1772         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1773         for (i = 0; i < cp->num_cqs; i++) {
1774                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1775                         ISCSI_INITIAL_SN;
1776                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1777                         ISCSI_INITIAL_SN;
1778         }
1779
1780         ictx->xstorm_ag_context.cdu_reserved =
1781                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1782                                        ISCSI_CONNECTION_TYPE);
1783         ictx->ustorm_ag_context.cdu_usage =
1784                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1785                                        ISCSI_CONNECTION_TYPE);
1786         return 0;
1787
1788 }
1789
1790 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1791                                    u32 num, int *work)
1792 {
1793         struct iscsi_kwqe_conn_offload1 *req1;
1794         struct iscsi_kwqe_conn_offload2 *req2;
1795         struct cnic_local *cp = dev->cnic_priv;
1796         struct cnic_context *ctx;
1797         struct iscsi_kcqe kcqe;
1798         struct kcqe *cqes[1];
1799         u32 l5_cid;
1800         int ret = 0;
1801
1802         if (num < 2) {
1803                 *work = num;
1804                 return -EINVAL;
1805         }
1806
1807         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1808         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1809         if ((num - 2) < req2->num_additional_wqes) {
1810                 *work = num;
1811                 return -EINVAL;
1812         }
1813         *work = 2 + req2->num_additional_wqes;
1814
1815         l5_cid = req1->iscsi_conn_id;
1816         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1817                 return -EINVAL;
1818
1819         memset(&kcqe, 0, sizeof(kcqe));
1820         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1821         kcqe.iscsi_conn_id = l5_cid;
1822         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1823
1824         ctx = &cp->ctx_tbl[l5_cid];
1825         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1826                 kcqe.completion_status =
1827                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1828                 goto done;
1829         }
1830
1831         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1832                 atomic_dec(&cp->iscsi_conn);
1833                 goto done;
1834         }
1835         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1836         if (ret) {
1837                 atomic_dec(&cp->iscsi_conn);
1838                 ret = 0;
1839                 goto done;
1840         }
1841         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1842         if (ret < 0) {
1843                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1844                 atomic_dec(&cp->iscsi_conn);
1845                 goto done;
1846         }
1847
1848         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1849         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1850
1851 done:
1852         cqes[0] = (struct kcqe *) &kcqe;
1853         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1854         return 0;
1855 }
1856
1857
1858 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1859 {
1860         struct cnic_local *cp = dev->cnic_priv;
1861         struct iscsi_kwqe_conn_update *req =
1862                 (struct iscsi_kwqe_conn_update *) kwqe;
1863         void *data;
1864         union l5cm_specific_data l5_data;
1865         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1866         int ret;
1867
1868         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1869                 return -EINVAL;
1870
1871         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1872         if (!data)
1873                 return -ENOMEM;
1874
1875         memcpy(data, kwqe, sizeof(struct kwqe));
1876
1877         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1878                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1879         return ret;
1880 }
1881
1882 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1883 {
1884         struct cnic_local *cp = dev->cnic_priv;
1885         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1886         union l5cm_specific_data l5_data;
1887         int ret;
1888         u32 hw_cid;
1889
1890         init_waitqueue_head(&ctx->waitq);
1891         ctx->wait_cond = 0;
1892         memset(&l5_data, 0, sizeof(l5_data));
1893         hw_cid = BNX2X_HW_CID(cp, ctx->cid);
1894
1895         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1896                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1897
1898         if (ret == 0) {
1899                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1900                 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1901                         return -EBUSY;
1902         }
1903
1904         return 0;
1905 }
1906
1907 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1908 {
1909         struct cnic_local *cp = dev->cnic_priv;
1910         struct iscsi_kwqe_conn_destroy *req =
1911                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1912         u32 l5_cid = req->reserved0;
1913         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1914         int ret = 0;
1915         struct iscsi_kcqe kcqe;
1916         struct kcqe *cqes[1];
1917
1918         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1919                 goto skip_cfc_delete;
1920
1921         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
1922                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
1923
1924                 if (delta > (2 * HZ))
1925                         delta = 0;
1926
1927                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
1928                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
1929                 goto destroy_reply;
1930         }
1931
1932         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
1933
1934 skip_cfc_delete:
1935         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1936
1937         if (!ret) {
1938                 atomic_dec(&cp->iscsi_conn);
1939                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1940         }
1941
1942 destroy_reply:
1943         memset(&kcqe, 0, sizeof(kcqe));
1944         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1945         kcqe.iscsi_conn_id = l5_cid;
1946         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1947         kcqe.iscsi_conn_context_id = req->context_id;
1948
1949         cqes[0] = (struct kcqe *) &kcqe;
1950         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1951
1952         return 0;
1953 }
1954
1955 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1956                                       struct l4_kwq_connect_req1 *kwqe1,
1957                                       struct l4_kwq_connect_req3 *kwqe3,
1958                                       struct l5cm_active_conn_buffer *conn_buf)
1959 {
1960         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1961         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1962                 &conn_buf->xstorm_conn_buffer;
1963         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1964                 &conn_buf->tstorm_conn_buffer;
1965         struct regpair context_addr;
1966         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1967         struct in6_addr src_ip, dst_ip;
1968         int i;
1969         u32 *addrp;
1970
1971         addrp = (u32 *) &conn_addr->local_ip_addr;
1972         for (i = 0; i < 4; i++, addrp++)
1973                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1974
1975         addrp = (u32 *) &conn_addr->remote_ip_addr;
1976         for (i = 0; i < 4; i++, addrp++)
1977                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1978
1979         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1980
1981         xstorm_buf->context_addr.hi = context_addr.hi;
1982         xstorm_buf->context_addr.lo = context_addr.lo;
1983         xstorm_buf->mss = 0xffff;
1984         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1985         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1986                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1987         xstorm_buf->pseudo_header_checksum =
1988                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1989
1990         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1991                 tstorm_buf->params |=
1992                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1993         if (kwqe3->ka_timeout) {
1994                 tstorm_buf->ka_enable = 1;
1995                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1996                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1997                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1998         }
1999         tstorm_buf->max_rt_time = 0xffffffff;
2000 }
2001
2002 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2003 {
2004         struct cnic_local *cp = dev->cnic_priv;
2005         u32 pfid = cp->pfid;
2006         u8 *mac = dev->mac_addr;
2007
2008         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2009                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2010         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2011                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2012         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2013                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2014         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2015                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2016         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2017                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2018         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2019                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2020
2021         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2022                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2023         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2024                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2025                  mac[4]);
2026         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2027                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2028         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2029                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2030                  mac[2]);
2031         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2032                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2033         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2034                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2035                  mac[0]);
2036 }
2037
2038 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
2039 {
2040         struct cnic_local *cp = dev->cnic_priv;
2041         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
2042         u16 tstorm_flags = 0;
2043
2044         if (tcp_ts) {
2045                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
2046                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
2047         }
2048
2049         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2050                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
2051
2052         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
2053                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
2054 }
2055
2056 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2057                               u32 num, int *work)
2058 {
2059         struct cnic_local *cp = dev->cnic_priv;
2060         struct l4_kwq_connect_req1 *kwqe1 =
2061                 (struct l4_kwq_connect_req1 *) wqes[0];
2062         struct l4_kwq_connect_req3 *kwqe3;
2063         struct l5cm_active_conn_buffer *conn_buf;
2064         struct l5cm_conn_addr_params *conn_addr;
2065         union l5cm_specific_data l5_data;
2066         u32 l5_cid = kwqe1->pg_cid;
2067         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2068         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2069         int ret;
2070
2071         if (num < 2) {
2072                 *work = num;
2073                 return -EINVAL;
2074         }
2075
2076         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2077                 *work = 3;
2078         else
2079                 *work = 2;
2080
2081         if (num < *work) {
2082                 *work = num;
2083                 return -EINVAL;
2084         }
2085
2086         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2087                 netdev_err(dev->netdev, "conn_buf size too big\n");
2088                 return -ENOMEM;
2089         }
2090         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2091         if (!conn_buf)
2092                 return -ENOMEM;
2093
2094         memset(conn_buf, 0, sizeof(*conn_buf));
2095
2096         conn_addr = &conn_buf->conn_addr_buf;
2097         conn_addr->remote_addr_0 = csk->ha[0];
2098         conn_addr->remote_addr_1 = csk->ha[1];
2099         conn_addr->remote_addr_2 = csk->ha[2];
2100         conn_addr->remote_addr_3 = csk->ha[3];
2101         conn_addr->remote_addr_4 = csk->ha[4];
2102         conn_addr->remote_addr_5 = csk->ha[5];
2103
2104         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2105                 struct l4_kwq_connect_req2 *kwqe2 =
2106                         (struct l4_kwq_connect_req2 *) wqes[1];
2107
2108                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2109                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2110                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2111
2112                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2113                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2114                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2115                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2116         }
2117         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2118
2119         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2120         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2121         conn_addr->local_tcp_port = kwqe1->src_port;
2122         conn_addr->remote_tcp_port = kwqe1->dst_port;
2123
2124         conn_addr->pmtu = kwqe3->pmtu;
2125         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2126
2127         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2128                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2129
2130         cnic_bnx2x_set_tcp_timestamp(dev,
2131                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
2132
2133         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2134                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2135         if (!ret)
2136                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2137
2138         return ret;
2139 }
2140
2141 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2142 {
2143         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2144         union l5cm_specific_data l5_data;
2145         int ret;
2146
2147         memset(&l5_data, 0, sizeof(l5_data));
2148         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2149                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2150         return ret;
2151 }
2152
2153 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2154 {
2155         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2156         union l5cm_specific_data l5_data;
2157         int ret;
2158
2159         memset(&l5_data, 0, sizeof(l5_data));
2160         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2161                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2162         return ret;
2163 }
2164 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2165 {
2166         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2167         struct l4_kcq kcqe;
2168         struct kcqe *cqes[1];
2169
2170         memset(&kcqe, 0, sizeof(kcqe));
2171         kcqe.pg_host_opaque = req->host_opaque;
2172         kcqe.pg_cid = req->host_opaque;
2173         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2174         cqes[0] = (struct kcqe *) &kcqe;
2175         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2176         return 0;
2177 }
2178
2179 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2180 {
2181         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2182         struct l4_kcq kcqe;
2183         struct kcqe *cqes[1];
2184
2185         memset(&kcqe, 0, sizeof(kcqe));
2186         kcqe.pg_host_opaque = req->pg_host_opaque;
2187         kcqe.pg_cid = req->pg_cid;
2188         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2189         cqes[0] = (struct kcqe *) &kcqe;
2190         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2191         return 0;
2192 }
2193
2194 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2195 {
2196         struct fcoe_kwqe_stat *req;
2197         struct fcoe_stat_ramrod_params *fcoe_stat;
2198         union l5cm_specific_data l5_data;
2199         struct cnic_local *cp = dev->cnic_priv;
2200         int ret;
2201         u32 cid;
2202
2203         req = (struct fcoe_kwqe_stat *) kwqe;
2204         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2205
2206         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2207         if (!fcoe_stat)
2208                 return -ENOMEM;
2209
2210         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2211         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2212
2213         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2214                                   FCOE_CONNECTION_TYPE, &l5_data);
2215         return ret;
2216 }
2217
2218 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2219                                  u32 num, int *work)
2220 {
2221         int ret;
2222         struct cnic_local *cp = dev->cnic_priv;
2223         u32 cid;
2224         struct fcoe_init_ramrod_params *fcoe_init;
2225         struct fcoe_kwqe_init1 *req1;
2226         struct fcoe_kwqe_init2 *req2;
2227         struct fcoe_kwqe_init3 *req3;
2228         union l5cm_specific_data l5_data;
2229
2230         if (num < 3) {
2231                 *work = num;
2232                 return -EINVAL;
2233         }
2234         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2235         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2236         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2237         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2238                 *work = 1;
2239                 return -EINVAL;
2240         }
2241         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2242                 *work = 2;
2243                 return -EINVAL;
2244         }
2245
2246         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2247                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2248                 return -ENOMEM;
2249         }
2250         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2251         if (!fcoe_init)
2252                 return -ENOMEM;
2253
2254         memset(fcoe_init, 0, sizeof(*fcoe_init));
2255         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2256         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2257         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2258         fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2259         fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2260         fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2261
2262         fcoe_init->sb_num = cp->status_blk_num;
2263         fcoe_init->eq_prod = MAX_KCQ_IDX;
2264         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2265         cp->kcq2.sw_prod_idx = 0;
2266
2267         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2268         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2269                                   FCOE_CONNECTION_TYPE, &l5_data);
2270         *work = 3;
2271         return ret;
2272 }
2273
2274 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2275                                  u32 num, int *work)
2276 {
2277         int ret = 0;
2278         u32 cid = -1, l5_cid;
2279         struct cnic_local *cp = dev->cnic_priv;
2280         struct fcoe_kwqe_conn_offload1 *req1;
2281         struct fcoe_kwqe_conn_offload2 *req2;
2282         struct fcoe_kwqe_conn_offload3 *req3;
2283         struct fcoe_kwqe_conn_offload4 *req4;
2284         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2285         struct cnic_context *ctx;
2286         struct fcoe_context *fctx;
2287         struct regpair ctx_addr;
2288         union l5cm_specific_data l5_data;
2289         struct fcoe_kcqe kcqe;
2290         struct kcqe *cqes[1];
2291
2292         if (num < 4) {
2293                 *work = num;
2294                 return -EINVAL;
2295         }
2296         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2297         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2298         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2299         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2300
2301         *work = 4;
2302
2303         l5_cid = req1->fcoe_conn_id;
2304         if (l5_cid >= dev->max_fcoe_conn)
2305                 goto err_reply;
2306
2307         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2308
2309         ctx = &cp->ctx_tbl[l5_cid];
2310         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2311                 goto err_reply;
2312
2313         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2314         if (ret) {
2315                 ret = 0;
2316                 goto err_reply;
2317         }
2318         cid = ctx->cid;
2319
2320         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2321         if (fctx) {
2322                 u32 hw_cid = BNX2X_HW_CID(cp, cid);
2323                 u32 val;
2324
2325                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2326                                              FCOE_CONNECTION_TYPE);
2327                 fctx->xstorm_ag_context.cdu_reserved = val;
2328                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2329                                              FCOE_CONNECTION_TYPE);
2330                 fctx->ustorm_ag_context.cdu_usage = val;
2331         }
2332         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2333                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2334                 goto err_reply;
2335         }
2336         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2337         if (!fcoe_offload)
2338                 goto err_reply;
2339
2340         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2341         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2342         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2343         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2344         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2345
2346         cid = BNX2X_HW_CID(cp, cid);
2347         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2348                                   FCOE_CONNECTION_TYPE, &l5_data);
2349         if (!ret)
2350                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2351
2352         return ret;
2353
2354 err_reply:
2355         if (cid != -1)
2356                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2357
2358         memset(&kcqe, 0, sizeof(kcqe));
2359         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2360         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2361         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2362
2363         cqes[0] = (struct kcqe *) &kcqe;
2364         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2365         return ret;
2366 }
2367
2368 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2369 {
2370         struct fcoe_kwqe_conn_enable_disable *req;
2371         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2372         union l5cm_specific_data l5_data;
2373         int ret;
2374         u32 cid, l5_cid;
2375         struct cnic_local *cp = dev->cnic_priv;
2376
2377         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2378         cid = req->context_id;
2379         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2380
2381         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2382                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2383                 return -ENOMEM;
2384         }
2385         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2386         if (!fcoe_enable)
2387                 return -ENOMEM;
2388
2389         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2390         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2391         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2392                                   FCOE_CONNECTION_TYPE, &l5_data);
2393         return ret;
2394 }
2395
2396 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2397 {
2398         struct fcoe_kwqe_conn_enable_disable *req;
2399         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2400         union l5cm_specific_data l5_data;
2401         int ret;
2402         u32 cid, l5_cid;
2403         struct cnic_local *cp = dev->cnic_priv;
2404
2405         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2406         cid = req->context_id;
2407         l5_cid = req->conn_id;
2408         if (l5_cid >= dev->max_fcoe_conn)
2409                 return -EINVAL;
2410
2411         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2412
2413         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2414                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2415                 return -ENOMEM;
2416         }
2417         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2418         if (!fcoe_disable)
2419                 return -ENOMEM;
2420
2421         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2422         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2423         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2424                                   FCOE_CONNECTION_TYPE, &l5_data);
2425         return ret;
2426 }
2427
2428 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2429 {
2430         struct fcoe_kwqe_conn_destroy *req;
2431         union l5cm_specific_data l5_data;
2432         int ret;
2433         u32 cid, l5_cid;
2434         struct cnic_local *cp = dev->cnic_priv;
2435         struct cnic_context *ctx;
2436         struct fcoe_kcqe kcqe;
2437         struct kcqe *cqes[1];
2438
2439         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2440         cid = req->context_id;
2441         l5_cid = req->conn_id;
2442         if (l5_cid >= dev->max_fcoe_conn)
2443                 return -EINVAL;
2444
2445         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2446
2447         ctx = &cp->ctx_tbl[l5_cid];
2448
2449         init_waitqueue_head(&ctx->waitq);
2450         ctx->wait_cond = 0;
2451
2452         memset(&kcqe, 0, sizeof(kcqe));
2453         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2454         memset(&l5_data, 0, sizeof(l5_data));
2455         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2456                                   FCOE_CONNECTION_TYPE, &l5_data);
2457         if (ret == 0) {
2458                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2459                 if (ctx->wait_cond)
2460                         kcqe.completion_status = 0;
2461         }
2462
2463         set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2464         queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2465
2466         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2467         kcqe.fcoe_conn_id = req->conn_id;
2468         kcqe.fcoe_conn_context_id = cid;
2469
2470         cqes[0] = (struct kcqe *) &kcqe;
2471         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2472         return ret;
2473 }
2474
2475 static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2476 {
2477         struct cnic_local *cp = dev->cnic_priv;
2478         u32 i;
2479
2480         for (i = start_cid; i < cp->max_cid_space; i++) {
2481                 struct cnic_context *ctx = &cp->ctx_tbl[i];
2482                 int j;
2483
2484                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2485                         msleep(10);
2486
2487                 for (j = 0; j < 5; j++) {
2488                         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2489                                 break;
2490                         msleep(20);
2491                 }
2492
2493                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2494                         netdev_warn(dev->netdev, "CID %x not deleted\n",
2495                                    ctx->cid);
2496         }
2497 }
2498
2499 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2500 {
2501         struct fcoe_kwqe_destroy *req;
2502         union l5cm_specific_data l5_data;
2503         struct cnic_local *cp = dev->cnic_priv;
2504         int ret;
2505         u32 cid;
2506
2507         cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2508
2509         req = (struct fcoe_kwqe_destroy *) kwqe;
2510         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2511
2512         memset(&l5_data, 0, sizeof(l5_data));
2513         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2514                                   FCOE_CONNECTION_TYPE, &l5_data);
2515         return ret;
2516 }
2517
2518 static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2519 {
2520         struct cnic_local *cp = dev->cnic_priv;
2521         struct kcqe kcqe;
2522         struct kcqe *cqes[1];
2523         u32 cid;
2524         u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2525         u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2526         u32 kcqe_op;
2527         int ulp_type;
2528
2529         cid = kwqe->kwqe_info0;
2530         memset(&kcqe, 0, sizeof(kcqe));
2531
2532         if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2533                 u32 l5_cid = 0;
2534
2535                 ulp_type = CNIC_ULP_FCOE;
2536                 if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2537                         struct fcoe_kwqe_conn_enable_disable *req;
2538
2539                         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2540                         kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2541                         cid = req->context_id;
2542                         l5_cid = req->conn_id;
2543                 } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2544                         kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2545                 } else {
2546                         return;
2547                 }
2548                 kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2549                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2550                 kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_NIC_ERROR;
2551                 kcqe.kcqe_info2 = cid;
2552                 kcqe.kcqe_info0 = l5_cid;
2553
2554         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2555                 ulp_type = CNIC_ULP_ISCSI;
2556                 if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2557                         cid = kwqe->kwqe_info1;
2558
2559                 kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2560                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2561                 kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_NIC_ERROR;
2562                 kcqe.kcqe_info2 = cid;
2563                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2564
2565         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2566                 struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2567
2568                 ulp_type = CNIC_ULP_L4;
2569                 if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2570                         kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2571                 else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2572                         kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2573                 else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2574                         kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2575                 else
2576                         return;
2577
2578                 kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2579                                     KCQE_FLAGS_LAYER_MASK_L4;
2580                 l4kcqe->status = L4_KCQE_COMPLETION_STATUS_NIC_ERROR;
2581                 l4kcqe->cid = cid;
2582                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2583         } else {
2584                 return;
2585         }
2586
2587         cqes[0] = (struct kcqe *) &kcqe;
2588         cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2589 }
2590
2591 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2592                                          struct kwqe *wqes[], u32 num_wqes)
2593 {
2594         int i, work, ret;
2595         u32 opcode;
2596         struct kwqe *kwqe;
2597
2598         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2599                 return -EAGAIN;         /* bnx2 is down */
2600
2601         for (i = 0; i < num_wqes; ) {
2602                 kwqe = wqes[i];
2603                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2604                 work = 1;
2605
2606                 switch (opcode) {
2607                 case ISCSI_KWQE_OPCODE_INIT1:
2608                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2609                         break;
2610                 case ISCSI_KWQE_OPCODE_INIT2:
2611                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2612                         break;
2613                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2614                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2615                                                      num_wqes - i, &work);
2616                         break;
2617                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2618                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2619                         break;
2620                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2621                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2622                         break;
2623                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2624                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2625                                                  &work);
2626                         break;
2627                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2628                         ret = cnic_bnx2x_close(dev, kwqe);
2629                         break;
2630                 case L4_KWQE_OPCODE_VALUE_RESET:
2631                         ret = cnic_bnx2x_reset(dev, kwqe);
2632                         break;
2633                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2634                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2635                         break;
2636                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2637                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2638                         break;
2639                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2640                         ret = 0;
2641                         break;
2642                 default:
2643                         ret = 0;
2644                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2645                                    opcode);
2646                         break;
2647                 }
2648                 if (ret < 0) {
2649                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2650                                    opcode);
2651
2652                         /* Possibly bnx2x parity error, send completion
2653                          * to ulp drivers with error code to speed up
2654                          * cleanup and reset recovery.
2655                          */
2656                         if (ret == -EIO || ret == -EAGAIN)
2657                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2658                 }
2659                 i += work;
2660         }
2661         return 0;
2662 }
2663
2664 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2665                                         struct kwqe *wqes[], u32 num_wqes)
2666 {
2667         struct cnic_local *cp = dev->cnic_priv;
2668         int i, work, ret;
2669         u32 opcode;
2670         struct kwqe *kwqe;
2671
2672         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2673                 return -EAGAIN;         /* bnx2 is down */
2674
2675         if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
2676                 return -EINVAL;
2677
2678         for (i = 0; i < num_wqes; ) {
2679                 kwqe = wqes[i];
2680                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2681                 work = 1;
2682
2683                 switch (opcode) {
2684                 case FCOE_KWQE_OPCODE_INIT1:
2685                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2686                                                     num_wqes - i, &work);
2687                         break;
2688                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2689                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2690                                                     num_wqes - i, &work);
2691                         break;
2692                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2693                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2694                         break;
2695                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2696                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2697                         break;
2698                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2699                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2700                         break;
2701                 case FCOE_KWQE_OPCODE_DESTROY:
2702                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2703                         break;
2704                 case FCOE_KWQE_OPCODE_STAT:
2705                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2706                         break;
2707                 default:
2708                         ret = 0;
2709                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2710                                    opcode);
2711                         break;
2712                 }
2713                 if (ret < 0) {
2714                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2715                                    opcode);
2716
2717                         /* Possibly bnx2x parity error, send completion
2718                          * to ulp drivers with error code to speed up
2719                          * cleanup and reset recovery.
2720                          */
2721                         if (ret == -EIO || ret == -EAGAIN)
2722                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2723                 }
2724                 i += work;
2725         }
2726         return 0;
2727 }
2728
2729 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2730                                    u32 num_wqes)
2731 {
2732         int ret = -EINVAL;
2733         u32 layer_code;
2734
2735         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2736                 return -EAGAIN;         /* bnx2x is down */
2737
2738         if (!num_wqes)
2739                 return 0;
2740
2741         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2742         switch (layer_code) {
2743         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2744         case KWQE_FLAGS_LAYER_MASK_L4:
2745         case KWQE_FLAGS_LAYER_MASK_L2:
2746                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2747                 break;
2748
2749         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2750                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2751                 break;
2752         }
2753         return ret;
2754 }
2755
2756 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2757 {
2758         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2759                 return KCQE_FLAGS_LAYER_MASK_L4;
2760
2761         return opflag & KCQE_FLAGS_LAYER_MASK;
2762 }
2763
2764 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2765 {
2766         struct cnic_local *cp = dev->cnic_priv;
2767         int i, j, comp = 0;
2768
2769         i = 0;
2770         j = 1;
2771         while (num_cqes) {
2772                 struct cnic_ulp_ops *ulp_ops;
2773                 int ulp_type;
2774                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2775                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2776
2777                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2778                         comp++;
2779
2780                 while (j < num_cqes) {
2781                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2782
2783                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2784                                 break;
2785
2786                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2787                                 comp++;
2788                         j++;
2789                 }
2790
2791                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2792                         ulp_type = CNIC_ULP_RDMA;
2793                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2794                         ulp_type = CNIC_ULP_ISCSI;
2795                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2796                         ulp_type = CNIC_ULP_FCOE;
2797                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2798                         ulp_type = CNIC_ULP_L4;
2799                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2800                         goto end;
2801                 else {
2802                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2803                                    kcqe_op_flag);
2804                         goto end;
2805                 }
2806
2807                 rcu_read_lock();
2808                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2809                 if (likely(ulp_ops)) {
2810                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2811                                                   cp->completed_kcq + i, j);
2812                 }
2813                 rcu_read_unlock();
2814 end:
2815                 num_cqes -= j;
2816                 i += j;
2817                 j = 1;
2818         }
2819         if (unlikely(comp))
2820                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2821 }
2822
2823 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2824 {
2825         struct cnic_local *cp = dev->cnic_priv;
2826         u16 i, ri, hw_prod, last;
2827         struct kcqe *kcqe;
2828         int kcqe_cnt = 0, last_cnt = 0;
2829
2830         i = ri = last = info->sw_prod_idx;
2831         ri &= MAX_KCQ_IDX;
2832         hw_prod = *info->hw_prod_idx_ptr;
2833         hw_prod = info->hw_idx(hw_prod);
2834
2835         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2836                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2837                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2838                 i = info->next_idx(i);
2839                 ri = i & MAX_KCQ_IDX;
2840                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2841                         last_cnt = kcqe_cnt;
2842                         last = i;
2843                 }
2844         }
2845
2846         info->sw_prod_idx = last;
2847         return last_cnt;
2848 }
2849
2850 static int cnic_l2_completion(struct cnic_local *cp)
2851 {
2852         u16 hw_cons, sw_cons;
2853         struct cnic_uio_dev *udev = cp->udev;
2854         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2855                                         (udev->l2_ring + (2 * BCM_PAGE_SIZE));
2856         u32 cmd;
2857         int comp = 0;
2858
2859         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2860                 return 0;
2861
2862         hw_cons = *cp->rx_cons_ptr;
2863         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2864                 hw_cons++;
2865
2866         sw_cons = cp->rx_cons;
2867         while (sw_cons != hw_cons) {
2868                 u8 cqe_fp_flags;
2869
2870                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2871                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2872                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2873                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2874                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2875                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2876                             cmd == RAMROD_CMD_ID_ETH_HALT)
2877                                 comp++;
2878                 }
2879                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2880         }
2881         return comp;
2882 }
2883
2884 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2885 {
2886         u16 rx_cons, tx_cons;
2887         int comp = 0;
2888
2889         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2890                 return;
2891
2892         rx_cons = *cp->rx_cons_ptr;
2893         tx_cons = *cp->tx_cons_ptr;
2894         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2895                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2896                         comp = cnic_l2_completion(cp);
2897
2898                 cp->tx_cons = tx_cons;
2899                 cp->rx_cons = rx_cons;
2900
2901                 if (cp->udev)
2902                         uio_event_notify(&cp->udev->cnic_uinfo);
2903         }
2904         if (comp)
2905                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2906 }
2907
2908 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2909 {
2910         struct cnic_local *cp = dev->cnic_priv;
2911         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2912         int kcqe_cnt;
2913
2914         /* status block index must be read before reading other fields */
2915         rmb();
2916         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2917
2918         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2919
2920                 service_kcqes(dev, kcqe_cnt);
2921
2922                 /* Tell compiler that status_blk fields can change. */
2923                 barrier();
2924                 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2925                 /* status block index must be read first */
2926                 rmb();
2927                 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2928         }
2929
2930         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2931
2932         cnic_chk_pkt_rings(cp);
2933
2934         return status_idx;
2935 }
2936
2937 static int cnic_service_bnx2(void *data, void *status_blk)
2938 {
2939         struct cnic_dev *dev = data;
2940
2941         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2942                 struct status_block *sblk = status_blk;
2943
2944                 return sblk->status_idx;
2945         }
2946
2947         return cnic_service_bnx2_queues(dev);
2948 }
2949
2950 static void cnic_service_bnx2_msix(unsigned long data)
2951 {
2952         struct cnic_dev *dev = (struct cnic_dev *) data;
2953         struct cnic_local *cp = dev->cnic_priv;
2954
2955         cp->last_status_idx = cnic_service_bnx2_queues(dev);
2956
2957         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2958                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2959 }
2960
2961 static void cnic_doirq(struct cnic_dev *dev)
2962 {
2963         struct cnic_local *cp = dev->cnic_priv;
2964
2965         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2966                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
2967
2968                 prefetch(cp->status_blk.gen);
2969                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2970
2971                 tasklet_schedule(&cp->cnic_irq_task);
2972         }
2973 }
2974
2975 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2976 {
2977         struct cnic_dev *dev = dev_instance;
2978         struct cnic_local *cp = dev->cnic_priv;
2979
2980         if (cp->ack_int)
2981                 cp->ack_int(dev);
2982
2983         cnic_doirq(dev);
2984
2985         return IRQ_HANDLED;
2986 }
2987
2988 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2989                                       u16 index, u8 op, u8 update)
2990 {
2991         struct cnic_local *cp = dev->cnic_priv;
2992         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2993                        COMMAND_REG_INT_ACK);
2994         struct igu_ack_register igu_ack;
2995
2996         igu_ack.status_block_index = index;
2997         igu_ack.sb_id_and_flags =
2998                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2999                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3000                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3001                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3002
3003         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3004 }
3005
3006 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3007                             u16 index, u8 op, u8 update)
3008 {
3009         struct igu_regular cmd_data;
3010         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3011
3012         cmd_data.sb_id_and_flags =
3013                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3014                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3015                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
3016                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3017
3018
3019         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3020 }
3021
3022 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3023 {
3024         struct cnic_local *cp = dev->cnic_priv;
3025
3026         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3027                            IGU_INT_DISABLE, 0);
3028 }
3029
3030 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3031 {
3032         struct cnic_local *cp = dev->cnic_priv;
3033
3034         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3035                         IGU_INT_DISABLE, 0);
3036 }
3037
3038 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3039 {
3040         u32 last_status = *info->status_idx_ptr;
3041         int kcqe_cnt;
3042
3043         /* status block index must be read before reading the KCQ */
3044         rmb();
3045         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3046
3047                 service_kcqes(dev, kcqe_cnt);
3048
3049                 /* Tell compiler that sblk fields can change. */
3050                 barrier();
3051
3052                 last_status = *info->status_idx_ptr;
3053                 /* status block index must be read before reading the KCQ */
3054                 rmb();
3055         }
3056         return last_status;
3057 }
3058
3059 static void cnic_service_bnx2x_bh(unsigned long data)
3060 {
3061         struct cnic_dev *dev = (struct cnic_dev *) data;
3062         struct cnic_local *cp = dev->cnic_priv;
3063         u32 status_idx, new_status_idx;
3064
3065         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3066                 return;
3067
3068         while (1) {
3069                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3070
3071                 CNIC_WR16(dev, cp->kcq1.io_addr,
3072                           cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3073
3074                 if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
3075                         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
3076                                            status_idx, IGU_INT_ENABLE, 1);
3077                         break;
3078                 }
3079
3080                 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3081
3082                 if (new_status_idx != status_idx)
3083                         continue;
3084
3085                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3086                           MAX_KCQ_IDX);
3087
3088                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3089                                 status_idx, IGU_INT_ENABLE, 1);
3090
3091                 break;
3092         }
3093 }
3094
3095 static int cnic_service_bnx2x(void *data, void *status_blk)
3096 {
3097         struct cnic_dev *dev = data;
3098         struct cnic_local *cp = dev->cnic_priv;
3099
3100         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3101                 cnic_doirq(dev);
3102
3103         cnic_chk_pkt_rings(cp);
3104
3105         return 0;
3106 }
3107
3108 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3109 {
3110         struct cnic_ulp_ops *ulp_ops;
3111
3112         if (if_type == CNIC_ULP_ISCSI)
3113                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3114
3115         mutex_lock(&cnic_lock);
3116         ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3117                                             lockdep_is_held(&cnic_lock));
3118         if (!ulp_ops) {
3119                 mutex_unlock(&cnic_lock);
3120                 return;
3121         }
3122         set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3123         mutex_unlock(&cnic_lock);
3124
3125         if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3126                 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3127
3128         clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3129 }
3130
3131 static void cnic_ulp_stop(struct cnic_dev *dev)
3132 {
3133         struct cnic_local *cp = dev->cnic_priv;
3134         int if_type;
3135
3136         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3137                 cnic_ulp_stop_one(cp, if_type);
3138 }
3139
3140 static void cnic_ulp_start(struct cnic_dev *dev)
3141 {
3142         struct cnic_local *cp = dev->cnic_priv;
3143         int if_type;
3144
3145         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3146                 struct cnic_ulp_ops *ulp_ops;
3147
3148                 mutex_lock(&cnic_lock);
3149                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3150                                                     lockdep_is_held(&cnic_lock));
3151                 if (!ulp_ops || !ulp_ops->cnic_start) {
3152                         mutex_unlock(&cnic_lock);
3153                         continue;
3154                 }
3155                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3156                 mutex_unlock(&cnic_lock);
3157
3158                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3159                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3160
3161                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3162         }
3163 }
3164
3165 static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3166 {
3167         struct cnic_local *cp = dev->cnic_priv;
3168         struct cnic_ulp_ops *ulp_ops;
3169         int rc;
3170
3171         mutex_lock(&cnic_lock);
3172         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
3173         if (ulp_ops && ulp_ops->cnic_get_stats)
3174                 rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3175         else
3176                 rc = -ENODEV;
3177         mutex_unlock(&cnic_lock);
3178         return rc;
3179 }
3180
3181 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3182 {
3183         struct cnic_dev *dev = data;
3184         int ulp_type = CNIC_ULP_ISCSI;
3185
3186         switch (info->cmd) {
3187         case CNIC_CTL_STOP_CMD:
3188                 cnic_hold(dev);
3189
3190                 cnic_ulp_stop(dev);
3191                 cnic_stop_hw(dev);
3192
3193                 cnic_put(dev);
3194                 break;
3195         case CNIC_CTL_START_CMD:
3196                 cnic_hold(dev);
3197
3198                 if (!cnic_start_hw(dev))
3199                         cnic_ulp_start(dev);
3200
3201                 cnic_put(dev);
3202                 break;
3203         case CNIC_CTL_STOP_ISCSI_CMD: {
3204                 struct cnic_local *cp = dev->cnic_priv;
3205                 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3206                 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3207                 break;
3208         }
3209         case CNIC_CTL_COMPLETION_CMD: {
3210                 struct cnic_ctl_completion *comp = &info->data.comp;
3211                 u32 cid = BNX2X_SW_CID(comp->cid);
3212                 u32 l5_cid;
3213                 struct cnic_local *cp = dev->cnic_priv;
3214
3215                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3216                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3217
3218                         if (unlikely(comp->error)) {
3219                                 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3220                                 netdev_err(dev->netdev,
3221                                            "CID %x CFC delete comp error %x\n",
3222                                            cid, comp->error);
3223                         }
3224
3225                         ctx->wait_cond = 1;
3226                         wake_up(&ctx->waitq);
3227                 }
3228                 break;
3229         }
3230         case CNIC_CTL_FCOE_STATS_GET_CMD:
3231                 ulp_type = CNIC_ULP_FCOE;
3232                 /* fall through */
3233         case CNIC_CTL_ISCSI_STATS_GET_CMD:
3234                 cnic_hold(dev);
3235                 cnic_copy_ulp_stats(dev, ulp_type);
3236                 cnic_put(dev);
3237                 break;
3238
3239         default:
3240                 return -EINVAL;
3241         }
3242         return 0;
3243 }
3244
3245 static void cnic_ulp_init(struct cnic_dev *dev)
3246 {
3247         int i;
3248         struct cnic_local *cp = dev->cnic_priv;
3249
3250         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3251                 struct cnic_ulp_ops *ulp_ops;
3252
3253                 mutex_lock(&cnic_lock);
3254                 ulp_ops = cnic_ulp_tbl_prot(i);
3255                 if (!ulp_ops || !ulp_ops->cnic_init) {
3256                         mutex_unlock(&cnic_lock);
3257                         continue;
3258                 }
3259                 ulp_get(ulp_ops);
3260                 mutex_unlock(&cnic_lock);
3261
3262                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3263                         ulp_ops->cnic_init(dev);
3264
3265                 ulp_put(ulp_ops);
3266         }
3267 }
3268
3269 static void cnic_ulp_exit(struct cnic_dev *dev)
3270 {
3271         int i;
3272         struct cnic_local *cp = dev->cnic_priv;
3273
3274         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3275                 struct cnic_ulp_ops *ulp_ops;
3276
3277                 mutex_lock(&cnic_lock);
3278                 ulp_ops = cnic_ulp_tbl_prot(i);
3279                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3280                         mutex_unlock(&cnic_lock);
3281                         continue;
3282                 }
3283                 ulp_get(ulp_ops);
3284                 mutex_unlock(&cnic_lock);
3285
3286                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3287                         ulp_ops->cnic_exit(dev);
3288
3289                 ulp_put(ulp_ops);
3290         }
3291 }
3292
3293 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3294 {
3295         struct cnic_dev *dev = csk->dev;
3296         struct l4_kwq_offload_pg *l4kwqe;
3297         struct kwqe *wqes[1];
3298
3299         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3300         memset(l4kwqe, 0, sizeof(*l4kwqe));
3301         wqes[0] = (struct kwqe *) l4kwqe;
3302
3303         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3304         l4kwqe->flags =
3305                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3306         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3307
3308         l4kwqe->da0 = csk->ha[0];
3309         l4kwqe->da1 = csk->ha[1];
3310         l4kwqe->da2 = csk->ha[2];
3311         l4kwqe->da3 = csk->ha[3];
3312         l4kwqe->da4 = csk->ha[4];
3313         l4kwqe->da5 = csk->ha[5];
3314
3315         l4kwqe->sa0 = dev->mac_addr[0];
3316         l4kwqe->sa1 = dev->mac_addr[1];
3317         l4kwqe->sa2 = dev->mac_addr[2];
3318         l4kwqe->sa3 = dev->mac_addr[3];
3319         l4kwqe->sa4 = dev->mac_addr[4];
3320         l4kwqe->sa5 = dev->mac_addr[5];
3321
3322         l4kwqe->etype = ETH_P_IP;
3323         l4kwqe->ipid_start = DEF_IPID_START;
3324         l4kwqe->host_opaque = csk->l5_cid;
3325
3326         if (csk->vlan_id) {
3327                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3328                 l4kwqe->vlan_tag = csk->vlan_id;
3329                 l4kwqe->l2hdr_nbytes += 4;
3330         }
3331
3332         return dev->submit_kwqes(dev, wqes, 1);
3333 }
3334
3335 static int cnic_cm_update_pg(struct cnic_sock *csk)
3336 {
3337         struct cnic_dev *dev = csk->dev;
3338         struct l4_kwq_update_pg *l4kwqe;
3339         struct kwqe *wqes[1];
3340
3341         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3342         memset(l4kwqe, 0, sizeof(*l4kwqe));
3343         wqes[0] = (struct kwqe *) l4kwqe;
3344
3345         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3346         l4kwqe->flags =
3347                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3348         l4kwqe->pg_cid = csk->pg_cid;
3349
3350         l4kwqe->da0 = csk->ha[0];
3351         l4kwqe->da1 = csk->ha[1];
3352         l4kwqe->da2 = csk->ha[2];
3353         l4kwqe->da3 = csk->ha[3];
3354         l4kwqe->da4 = csk->ha[4];
3355         l4kwqe->da5 = csk->ha[5];
3356
3357         l4kwqe->pg_host_opaque = csk->l5_cid;
3358         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3359
3360         return dev->submit_kwqes(dev, wqes, 1);
3361 }
3362
3363 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3364 {
3365         struct cnic_dev *dev = csk->dev;
3366         struct l4_kwq_upload *l4kwqe;
3367         struct kwqe *wqes[1];
3368
3369         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3370         memset(l4kwqe, 0, sizeof(*l4kwqe));
3371         wqes[0] = (struct kwqe *) l4kwqe;
3372
3373         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3374         l4kwqe->flags =
3375                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3376         l4kwqe->cid = csk->pg_cid;
3377
3378         return dev->submit_kwqes(dev, wqes, 1);
3379 }
3380
3381 static int cnic_cm_conn_req(struct cnic_sock *csk)
3382 {
3383         struct cnic_dev *dev = csk->dev;
3384         struct l4_kwq_connect_req1 *l4kwqe1;
3385         struct l4_kwq_connect_req2 *l4kwqe2;
3386         struct l4_kwq_connect_req3 *l4kwqe3;
3387         struct kwqe *wqes[3];
3388         u8 tcp_flags = 0;
3389         int num_wqes = 2;
3390
3391         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3392         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3393         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3394         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3395         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3396         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3397
3398         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3399         l4kwqe3->flags =
3400                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3401         l4kwqe3->ka_timeout = csk->ka_timeout;
3402         l4kwqe3->ka_interval = csk->ka_interval;
3403         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3404         l4kwqe3->tos = csk->tos;
3405         l4kwqe3->ttl = csk->ttl;
3406         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3407         l4kwqe3->pmtu = csk->mtu;
3408         l4kwqe3->rcv_buf = csk->rcv_buf;
3409         l4kwqe3->snd_buf = csk->snd_buf;
3410         l4kwqe3->seed = csk->seed;
3411
3412         wqes[0] = (struct kwqe *) l4kwqe1;
3413         if (test_bit(SK_F_IPV6, &csk->flags)) {
3414                 wqes[1] = (struct kwqe *) l4kwqe2;
3415                 wqes[2] = (struct kwqe *) l4kwqe3;
3416                 num_wqes = 3;
3417
3418                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3419                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3420                 l4kwqe2->flags =
3421                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3422                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3423                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3424                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3425                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3426                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3427                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3428                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3429                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3430                                sizeof(struct tcphdr);
3431         } else {
3432                 wqes[1] = (struct kwqe *) l4kwqe3;
3433                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3434                                sizeof(struct tcphdr);
3435         }
3436
3437         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3438         l4kwqe1->flags =
3439                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3440                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3441         l4kwqe1->cid = csk->cid;
3442         l4kwqe1->pg_cid = csk->pg_cid;
3443         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3444         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3445         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3446         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3447         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3448                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3449         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3450                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3451         if (csk->tcp_flags & SK_TCP_NAGLE)
3452                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3453         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3454                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3455         if (csk->tcp_flags & SK_TCP_SACK)
3456                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3457         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3458                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3459
3460         l4kwqe1->tcp_flags = tcp_flags;
3461
3462         return dev->submit_kwqes(dev, wqes, num_wqes);
3463 }
3464
3465 static int cnic_cm_close_req(struct cnic_sock *csk)
3466 {
3467         struct cnic_dev *dev = csk->dev;
3468         struct l4_kwq_close_req *l4kwqe;
3469         struct kwqe *wqes[1];
3470
3471         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3472         memset(l4kwqe, 0, sizeof(*l4kwqe));
3473         wqes[0] = (struct kwqe *) l4kwqe;
3474
3475         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3476         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3477         l4kwqe->cid = csk->cid;
3478
3479         return dev->submit_kwqes(dev, wqes, 1);
3480 }
3481
3482 static int cnic_cm_abort_req(struct cnic_sock *csk)
3483 {
3484         struct cnic_dev *dev = csk->dev;
3485         struct l4_kwq_reset_req *l4kwqe;
3486         struct kwqe *wqes[1];
3487
3488         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3489         memset(l4kwqe, 0, sizeof(*l4kwqe));
3490         wqes[0] = (struct kwqe *) l4kwqe;
3491
3492         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3493         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3494         l4kwqe->cid = csk->cid;
3495
3496         return dev->submit_kwqes(dev, wqes, 1);
3497 }
3498
3499 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3500                           u32 l5_cid, struct cnic_sock **csk, void *context)
3501 {
3502         struct cnic_local *cp = dev->cnic_priv;
3503         struct cnic_sock *csk1;
3504
3505         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3506                 return -EINVAL;
3507
3508         if (cp->ctx_tbl) {
3509                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3510
3511                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3512                         return -EAGAIN;
3513         }
3514
3515         csk1 = &cp->csk_tbl[l5_cid];
3516         if (atomic_read(&csk1->ref_count))
3517                 return -EAGAIN;
3518
3519         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3520                 return -EBUSY;
3521
3522         csk1->dev = dev;
3523         csk1->cid = cid;
3524         csk1->l5_cid = l5_cid;
3525         csk1->ulp_type = ulp_type;
3526         csk1->context = context;
3527
3528         csk1->ka_timeout = DEF_KA_TIMEOUT;
3529         csk1->ka_interval = DEF_KA_INTERVAL;
3530         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3531         csk1->tos = DEF_TOS;
3532         csk1->ttl = DEF_TTL;
3533         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3534         csk1->rcv_buf = DEF_RCV_BUF;
3535         csk1->snd_buf = DEF_SND_BUF;
3536         csk1->seed = DEF_SEED;
3537
3538         *csk = csk1;
3539         return 0;
3540 }
3541
3542 static void cnic_cm_cleanup(struct cnic_sock *csk)
3543 {
3544         if (csk->src_port) {
3545                 struct cnic_dev *dev = csk->dev;
3546                 struct cnic_local *cp = dev->cnic_priv;
3547
3548                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3549                 csk->src_port = 0;
3550         }
3551 }
3552
3553 static void cnic_close_conn(struct cnic_sock *csk)
3554 {
3555         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3556                 cnic_cm_upload_pg(csk);
3557                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3558         }
3559         cnic_cm_cleanup(csk);
3560 }
3561
3562 static int cnic_cm_destroy(struct cnic_sock *csk)
3563 {
3564         if (!cnic_in_use(csk))
3565                 return -EINVAL;
3566
3567         csk_hold(csk);
3568         clear_bit(SK_F_INUSE, &csk->flags);
3569         smp_mb__after_clear_bit();
3570         while (atomic_read(&csk->ref_count) != 1)
3571                 msleep(1);
3572         cnic_cm_cleanup(csk);
3573
3574         csk->flags = 0;
3575         csk_put(csk);
3576         return 0;
3577 }
3578
3579 static inline u16 cnic_get_vlan(struct net_device *dev,
3580                                 struct net_device **vlan_dev)
3581 {
3582         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3583                 *vlan_dev = vlan_dev_real_dev(dev);
3584                 return vlan_dev_vlan_id(dev);
3585         }
3586         *vlan_dev = dev;
3587         return 0;
3588 }
3589
3590 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3591                              struct dst_entry **dst)
3592 {
3593 #if defined(CONFIG_INET)
3594         struct rtable *rt;
3595
3596         rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3597         if (!IS_ERR(rt)) {
3598                 *dst = &rt->dst;
3599                 return 0;
3600         }
3601         return PTR_ERR(rt);
3602 #else
3603         return -ENETUNREACH;
3604 #endif
3605 }
3606
3607 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3608                              struct dst_entry **dst)
3609 {
3610 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3611         struct flowi6 fl6;
3612
3613         memset(&fl6, 0, sizeof(fl6));
3614         fl6.daddr = dst_addr->sin6_addr;
3615         if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3616                 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3617
3618         *dst = ip6_route_output(&init_net, NULL, &fl6);
3619         if ((*dst)->error) {
3620                 dst_release(*dst);
3621                 *dst = NULL;
3622                 return -ENETUNREACH;
3623         } else
3624                 return 0;
3625 #endif
3626
3627         return -ENETUNREACH;
3628 }
3629
3630 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3631                                            int ulp_type)
3632 {
3633         struct cnic_dev *dev = NULL;
3634         struct dst_entry *dst;
3635         struct net_device *netdev = NULL;
3636         int err = -ENETUNREACH;
3637
3638         if (dst_addr->sin_family == AF_INET)
3639                 err = cnic_get_v4_route(dst_addr, &dst);
3640         else if (dst_addr->sin_family == AF_INET6) {
3641                 struct sockaddr_in6 *dst_addr6 =
3642                         (struct sockaddr_in6 *) dst_addr;
3643
3644                 err = cnic_get_v6_route(dst_addr6, &dst);
3645         } else
3646                 return NULL;
3647
3648         if (err)
3649                 return NULL;
3650
3651         if (!dst->dev)
3652                 goto done;
3653
3654         cnic_get_vlan(dst->dev, &netdev);
3655
3656         dev = cnic_from_netdev(netdev);
3657
3658 done:
3659         dst_release(dst);
3660         if (dev)
3661                 cnic_put(dev);
3662         return dev;
3663 }
3664
3665 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3666 {
3667         struct cnic_dev *dev = csk->dev;
3668         struct cnic_local *cp = dev->cnic_priv;
3669
3670         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3671 }
3672
3673 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3674 {
3675         struct cnic_dev *dev = csk->dev;
3676         struct cnic_local *cp = dev->cnic_priv;
3677         int is_v6, rc = 0;
3678         struct dst_entry *dst = NULL;
3679         struct net_device *realdev;
3680         __be16 local_port;
3681         u32 port_id;
3682
3683         if (saddr->local.v6.sin6_family == AF_INET6 &&
3684             saddr->remote.v6.sin6_family == AF_INET6)
3685                 is_v6 = 1;
3686         else if (saddr->local.v4.sin_family == AF_INET &&
3687                  saddr->remote.v4.sin_family == AF_INET)
3688                 is_v6 = 0;
3689         else
3690                 return -EINVAL;
3691
3692         clear_bit(SK_F_IPV6, &csk->flags);
3693
3694         if (is_v6) {
3695                 set_bit(SK_F_IPV6, &csk->flags);
3696                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3697
3698                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3699                        sizeof(struct in6_addr));
3700                 csk->dst_port = saddr->remote.v6.sin6_port;
3701                 local_port = saddr->local.v6.sin6_port;
3702
3703         } else {
3704                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3705
3706                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3707                 csk->dst_port = saddr->remote.v4.sin_port;
3708                 local_port = saddr->local.v4.sin_port;
3709         }
3710
3711         csk->vlan_id = 0;
3712         csk->mtu = dev->netdev->mtu;
3713         if (dst && dst->dev) {
3714                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3715                 if (realdev == dev->netdev) {
3716                         csk->vlan_id = vlan;
3717                         csk->mtu = dst_mtu(dst);
3718                 }
3719         }
3720
3721         port_id = be16_to_cpu(local_port);
3722         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3723             port_id < CNIC_LOCAL_PORT_MAX) {
3724                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3725                         port_id = 0;
3726         } else
3727                 port_id = 0;
3728
3729         if (!port_id) {
3730                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3731                 if (port_id == -1) {
3732                         rc = -ENOMEM;
3733                         goto err_out;
3734                 }
3735                 local_port = cpu_to_be16(port_id);
3736         }
3737         csk->src_port = local_port;
3738
3739 err_out:
3740         dst_release(dst);
3741         return rc;
3742 }
3743
3744 static void cnic_init_csk_state(struct cnic_sock *csk)
3745 {
3746         csk->state = 0;
3747         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3748         clear_bit(SK_F_CLOSING, &csk->flags);
3749 }
3750
3751 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3752 {
3753         struct cnic_local *cp = csk->dev->cnic_priv;
3754         int err = 0;
3755
3756         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3757                 return -EOPNOTSUPP;
3758
3759         if (!cnic_in_use(csk))
3760                 return -EINVAL;
3761
3762         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3763                 return -EINVAL;
3764
3765         cnic_init_csk_state(csk);
3766
3767         err = cnic_get_route(csk, saddr);
3768         if (err)
3769                 goto err_out;
3770
3771         err = cnic_resolve_addr(csk, saddr);
3772         if (!err)
3773                 return 0;
3774
3775 err_out:
3776         clear_bit(SK_F_CONNECT_START, &csk->flags);
3777         return err;
3778 }
3779
3780 static int cnic_cm_abort(struct cnic_sock *csk)
3781 {
3782         struct cnic_local *cp = csk->dev->cnic_priv;
3783         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3784
3785         if (!cnic_in_use(csk))
3786                 return -EINVAL;
3787
3788         if (cnic_abort_prep(csk))
3789                 return cnic_cm_abort_req(csk);
3790
3791         /* Getting here means that we haven't started connect, or
3792          * connect was not successful.
3793          */
3794
3795         cp->close_conn(csk, opcode);
3796         if (csk->state != opcode)
3797                 return -EALREADY;
3798
3799         return 0;
3800 }
3801
3802 static int cnic_cm_close(struct cnic_sock *csk)
3803 {
3804         if (!cnic_in_use(csk))
3805                 return -EINVAL;
3806
3807         if (cnic_close_prep(csk)) {
3808                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3809                 return cnic_cm_close_req(csk);
3810         } else {
3811                 return -EALREADY;
3812         }
3813         return 0;
3814 }
3815
3816 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3817                            u8 opcode)
3818 {
3819         struct cnic_ulp_ops *ulp_ops;
3820         int ulp_type = csk->ulp_type;
3821
3822         rcu_read_lock();
3823         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3824         if (ulp_ops) {
3825                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3826                         ulp_ops->cm_connect_complete(csk);
3827                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3828                         ulp_ops->cm_close_complete(csk);
3829                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3830                         ulp_ops->cm_remote_abort(csk);
3831                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3832                         ulp_ops->cm_abort_complete(csk);
3833                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3834                         ulp_ops->cm_remote_close(csk);
3835         }
3836         rcu_read_unlock();
3837 }
3838
3839 static int cnic_cm_set_pg(struct cnic_sock *csk)
3840 {
3841         if (cnic_offld_prep(csk)) {
3842                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3843                         cnic_cm_update_pg(csk);
3844                 else
3845                         cnic_cm_offload_pg(csk);
3846         }
3847         return 0;
3848 }
3849
3850 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3851 {
3852         struct cnic_local *cp = dev->cnic_priv;
3853         u32 l5_cid = kcqe->pg_host_opaque;
3854         u8 opcode = kcqe->op_code;
3855         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3856
3857         csk_hold(csk);
3858         if (!cnic_in_use(csk))
3859                 goto done;
3860
3861         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3862                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3863                 goto done;
3864         }
3865         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3866         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3867                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3868                 cnic_cm_upcall(cp, csk,
3869                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3870                 goto done;
3871         }
3872
3873         csk->pg_cid = kcqe->pg_cid;
3874         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3875         cnic_cm_conn_req(csk);
3876
3877 done:
3878         csk_put(csk);
3879 }
3880
3881 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3882 {
3883         struct cnic_local *cp = dev->cnic_priv;
3884         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3885         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3886         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3887
3888         ctx->timestamp = jiffies;
3889         ctx->wait_cond = 1;
3890         wake_up(&ctx->waitq);
3891 }
3892
3893 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3894 {
3895         struct cnic_local *cp = dev->cnic_priv;
3896         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3897         u8 opcode = l4kcqe->op_code;
3898         u32 l5_cid;
3899         struct cnic_sock *csk;
3900
3901         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3902                 cnic_process_fcoe_term_conn(dev, kcqe);
3903                 return;
3904         }
3905         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3906             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3907                 cnic_cm_process_offld_pg(dev, l4kcqe);
3908                 return;
3909         }
3910
3911         l5_cid = l4kcqe->conn_id;
3912         if (opcode & 0x80)
3913                 l5_cid = l4kcqe->cid;
3914         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3915                 return;
3916
3917         csk = &cp->csk_tbl[l5_cid];
3918         csk_hold(csk);
3919
3920         if (!cnic_in_use(csk)) {
3921                 csk_put(csk);
3922                 return;
3923         }
3924
3925         switch (opcode) {
3926         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3927                 if (l4kcqe->status != 0) {
3928                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3929                         cnic_cm_upcall(cp, csk,
3930                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3931                 }
3932                 break;
3933         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3934                 if (l4kcqe->status == 0)
3935                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3936                 else if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_NIC_ERROR)
3937                         set_bit(SK_F_HW_ERR, &csk->flags);
3938
3939                 smp_mb__before_clear_bit();
3940                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3941                 cnic_cm_upcall(cp, csk, opcode);
3942                 break;
3943
3944         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3945         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3946         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3947         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3948         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3949                 if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_NIC_ERROR)
3950                         set_bit(SK_F_HW_ERR, &csk->flags);
3951
3952                 cp->close_conn(csk, opcode);
3953                 break;
3954
3955         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3956                 /* after we already sent CLOSE_REQ */
3957                 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
3958                     !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
3959                     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3960                         cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
3961                 else
3962                         cnic_cm_upcall(cp, csk, opcode);
3963                 break;
3964         }
3965         csk_put(csk);
3966 }
3967
3968 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3969 {
3970         struct cnic_dev *dev = data;
3971         int i;
3972
3973         for (i = 0; i < num; i++)
3974                 cnic_cm_process_kcqe(dev, kcqe[i]);
3975 }
3976
3977 static struct cnic_ulp_ops cm_ulp_ops = {
3978         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3979 };
3980
3981 static void cnic_cm_free_mem(struct cnic_dev *dev)
3982 {
3983         struct cnic_local *cp = dev->cnic_priv;
3984
3985         kfree(cp->csk_tbl);
3986         cp->csk_tbl = NULL;
3987         cnic_free_id_tbl(&cp->csk_port_tbl);
3988 }
3989
3990 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3991 {
3992         struct cnic_local *cp = dev->cnic_priv;
3993         u32 port_id;
3994
3995         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3996                               GFP_KERNEL);
3997         if (!cp->csk_tbl)
3998                 return -ENOMEM;
3999
4000         port_id = random32();
4001         port_id %= CNIC_LOCAL_PORT_RANGE;
4002         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4003                              CNIC_LOCAL_PORT_MIN, port_id)) {
4004                 cnic_cm_free_mem(dev);
4005                 return -ENOMEM;
4006         }
4007         return 0;
4008 }
4009
4010 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
4011 {
4012         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
4013                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
4014                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
4015                 csk->state = opcode;
4016         }
4017
4018         /* 1. If event opcode matches the expected event in csk->state
4019          * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
4020          *    event
4021          * 3. If the expected event is 0, meaning the connection was never
4022          *    never established, we accept the opcode from cm_abort.
4023          */
4024         if (opcode == csk->state || csk->state == 0 ||
4025             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
4026             csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4027                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
4028                         if (csk->state == 0)
4029                                 csk->state = opcode;
4030                         return 1;
4031                 }
4032         }
4033         return 0;
4034 }
4035
4036 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
4037 {
4038         struct cnic_dev *dev = csk->dev;
4039         struct cnic_local *cp = dev->cnic_priv;
4040
4041         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
4042                 cnic_cm_upcall(cp, csk, opcode);
4043                 return;
4044         }
4045
4046         clear_bit(SK_F_CONNECT_START, &csk->flags);
4047         cnic_close_conn(csk);
4048         csk->state = opcode;
4049         cnic_cm_upcall(cp, csk, opcode);
4050 }
4051
4052 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
4053 {
4054 }
4055
4056 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
4057 {
4058         u32 seed;
4059
4060         seed = random32();
4061         cnic_ctx_wr(dev, 45, 0, seed);
4062         return 0;
4063 }
4064
4065 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
4066 {
4067         struct cnic_dev *dev = csk->dev;
4068         struct cnic_local *cp = dev->cnic_priv;
4069         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
4070         union l5cm_specific_data l5_data;
4071         u32 cmd = 0;
4072         int close_complete = 0;
4073
4074         switch (opcode) {
4075         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4076         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4077         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4078                 if (cnic_ready_to_close(csk, opcode)) {
4079                         if (test_bit(SK_F_HW_ERR, &csk->flags))
4080                                 close_complete = 1;
4081                         else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4082                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
4083                         else
4084                                 close_complete = 1;
4085                 }
4086                 break;
4087         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4088                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
4089                 break;
4090         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4091                 close_complete = 1;
4092                 break;
4093         }
4094         if (cmd) {
4095                 memset(&l5_data, 0, sizeof(l5_data));
4096
4097                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
4098                                     &l5_data);
4099         } else if (close_complete) {
4100                 ctx->timestamp = jiffies;
4101                 cnic_close_conn(csk);
4102                 cnic_cm_upcall(cp, csk, csk->state);
4103         }
4104 }
4105
4106 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
4107 {
4108         struct cnic_local *cp = dev->cnic_priv;
4109
4110         if (!cp->ctx_tbl)
4111                 return;
4112
4113         if (!netif_running(dev->netdev))
4114                 return;
4115
4116         cnic_bnx2x_delete_wait(dev, 0);
4117
4118         cancel_delayed_work(&cp->delete_task);
4119         flush_workqueue(cnic_wq);
4120
4121         if (atomic_read(&cp->iscsi_conn) != 0)
4122                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
4123                             atomic_read(&cp->iscsi_conn));
4124 }
4125
4126 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
4127 {
4128         struct cnic_local *cp = dev->cnic_priv;
4129         u32 pfid = cp->pfid;
4130         u32 port = CNIC_PORT(cp);
4131
4132         cnic_init_bnx2x_mac(dev);
4133         cnic_bnx2x_set_tcp_timestamp(dev, 1);
4134
4135         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4136                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4137
4138         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4139                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4140         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4141                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4142                 DEF_MAX_DA_COUNT);
4143
4144         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4145                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4146         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4147                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4148         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4149                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4150         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4151                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4152
4153         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4154                 DEF_MAX_CWND);
4155         return 0;
4156 }
4157
4158 static void cnic_delete_task(struct work_struct *work)
4159 {
4160         struct cnic_local *cp;
4161         struct cnic_dev *dev;
4162         u32 i;
4163         int need_resched = 0;
4164
4165         cp = container_of(work, struct cnic_local, delete_task.work);
4166         dev = cp->dev;
4167
4168         if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4169                 struct drv_ctl_info info;
4170
4171                 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4172
4173                 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4174                 cp->ethdev->drv_ctl(dev->netdev, &info);
4175         }
4176
4177         for (i = 0; i < cp->max_cid_space; i++) {
4178                 struct cnic_context *ctx = &cp->ctx_tbl[i];
4179                 int err;
4180
4181                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4182                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4183                         continue;
4184
4185                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4186                         need_resched = 1;
4187                         continue;
4188                 }
4189
4190                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4191                         continue;
4192
4193                 err = cnic_bnx2x_destroy_ramrod(dev, i);
4194
4195                 cnic_free_bnx2x_conn_resc(dev, i);
4196                 if (!err) {
4197                         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4198                                 atomic_dec(&cp->iscsi_conn);
4199
4200                         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4201                 }
4202         }
4203
4204         if (need_resched)
4205                 queue_delayed_work(cnic_wq, &cp->delete_task,
4206                                    msecs_to_jiffies(10));
4207
4208 }
4209
4210 static int cnic_cm_open(struct cnic_dev *dev)
4211 {
4212         struct cnic_local *cp = dev->cnic_priv;
4213         int err;
4214
4215         err = cnic_cm_alloc_mem(dev);
4216         if (err)
4217                 return err;
4218
4219         err = cp->start_cm(dev);
4220
4221         if (err)
4222                 goto err_out;
4223
4224         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4225
4226         dev->cm_create = cnic_cm_create;
4227         dev->cm_destroy = cnic_cm_destroy;
4228         dev->cm_connect = cnic_cm_connect;
4229         dev->cm_abort = cnic_cm_abort;
4230         dev->cm_close = cnic_cm_close;
4231         dev->cm_select_dev = cnic_cm_select_dev;
4232
4233         cp->ulp_handle[CNIC_ULP_L4] = dev;
4234         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4235         return 0;
4236
4237 err_out:
4238         cnic_cm_free_mem(dev);
4239         return err;
4240 }
4241
4242 static int cnic_cm_shutdown(struct cnic_dev *dev)
4243 {
4244         struct cnic_local *cp = dev->cnic_priv;
4245         int i;
4246
4247         cp->stop_cm(dev);
4248
4249         if (!cp->csk_tbl)
4250                 return 0;
4251
4252         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4253                 struct cnic_sock *csk = &cp->csk_tbl[i];
4254
4255                 clear_bit(SK_F_INUSE, &csk->flags);
4256                 cnic_cm_cleanup(csk);
4257         }
4258         cnic_cm_free_mem(dev);
4259
4260         return 0;
4261 }
4262
4263 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4264 {
4265         u32 cid_addr;
4266         int i;
4267
4268         cid_addr = GET_CID_ADDR(cid);
4269
4270         for (i = 0; i < CTX_SIZE; i += 4)
4271                 cnic_ctx_wr(dev, cid_addr, i, 0);
4272 }
4273
4274 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4275 {
4276         struct cnic_local *cp = dev->cnic_priv;
4277         int ret = 0, i;
4278         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4279
4280         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4281                 return 0;
4282
4283         for (i = 0; i < cp->ctx_blks; i++) {
4284                 int j;
4285                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4286                 u32 val;
4287
4288                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
4289
4290                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4291                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4292                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4293                         (u64) cp->ctx_arr[i].mapping >> 32);
4294                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4295                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4296                 for (j = 0; j < 10; j++) {
4297
4298                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4299                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4300                                 break;
4301                         udelay(5);
4302                 }
4303                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4304                         ret = -EBUSY;
4305                         break;
4306                 }
4307         }
4308         return ret;
4309 }
4310
4311 static void cnic_free_irq(struct cnic_dev *dev)
4312 {
4313         struct cnic_local *cp = dev->cnic_priv;
4314         struct cnic_eth_dev *ethdev = cp->ethdev;
4315
4316         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4317                 cp->disable_int_sync(dev);
4318                 tasklet_kill(&cp->cnic_irq_task);
4319                 free_irq(ethdev->irq_arr[0].vector, dev);
4320         }
4321 }
4322
4323 static int cnic_request_irq(struct cnic_dev *dev)
4324 {
4325         struct cnic_local *cp = dev->cnic_priv;
4326         struct cnic_eth_dev *ethdev = cp->ethdev;
4327         int err;
4328
4329         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4330         if (err)
4331                 tasklet_disable(&cp->cnic_irq_task);
4332
4333         return err;
4334 }
4335
4336 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4337 {
4338         struct cnic_local *cp = dev->cnic_priv;
4339         struct cnic_eth_dev *ethdev = cp->ethdev;
4340
4341         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4342                 int err, i = 0;
4343                 int sblk_num = cp->status_blk_num;
4344                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4345                            BNX2_HC_SB_CONFIG_1;
4346
4347                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4348
4349                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4350                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4351                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4352
4353                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4354                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4355                              (unsigned long) dev);
4356                 err = cnic_request_irq(dev);
4357                 if (err)
4358                         return err;
4359
4360                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4361                        i < 10) {
4362                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4363                                 1 << (11 + sblk_num));
4364                         udelay(10);
4365                         i++;
4366                         barrier();
4367                 }
4368                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4369                         cnic_free_irq(dev);
4370                         goto failed;
4371                 }
4372
4373         } else {
4374                 struct status_block *sblk = cp->status_blk.gen;
4375                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4376                 int i = 0;
4377
4378                 while (sblk->status_completion_producer_index && i < 10) {
4379                         CNIC_WR(dev, BNX2_HC_COMMAND,
4380                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4381                         udelay(10);
4382                         i++;
4383                         barrier();
4384                 }
4385                 if (sblk->status_completion_producer_index)
4386                         goto failed;
4387
4388         }
4389         return 0;
4390
4391 failed:
4392         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4393         return -EBUSY;
4394 }
4395
4396 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4397 {
4398         struct cnic_local *cp = dev->cnic_priv;
4399         struct cnic_eth_dev *ethdev = cp->ethdev;
4400
4401         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4402                 return;
4403
4404         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4405                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4406 }
4407
4408 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4409 {
4410         struct cnic_local *cp = dev->cnic_priv;
4411         struct cnic_eth_dev *ethdev = cp->ethdev;
4412
4413         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4414                 return;
4415
4416         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4417                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4418         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4419         synchronize_irq(ethdev->irq_arr[0].vector);
4420 }
4421
4422 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4423 {
4424         struct cnic_local *cp = dev->cnic_priv;
4425         struct cnic_eth_dev *ethdev = cp->ethdev;
4426         struct cnic_uio_dev *udev = cp->udev;
4427         u32 cid_addr, tx_cid, sb_id;
4428         u32 val, offset0, offset1, offset2, offset3;
4429         int i;
4430         struct tx_bd *txbd;
4431         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4432         struct status_block *s_blk = cp->status_blk.gen;
4433
4434         sb_id = cp->status_blk_num;
4435         tx_cid = 20;
4436         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4437         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4438                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4439
4440                 tx_cid = TX_TSS_CID + sb_id - 1;
4441                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4442                         (TX_TSS_CID << 7));
4443                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4444         }
4445         cp->tx_cons = *cp->tx_cons_ptr;
4446
4447         cid_addr = GET_CID_ADDR(tx_cid);
4448         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
4449                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4450
4451                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4452                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4453
4454                 offset0 = BNX2_L2CTX_TYPE_XI;
4455                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4456                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4457                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4458         } else {
4459                 cnic_init_context(dev, tx_cid);
4460                 cnic_init_context(dev, tx_cid + 1);
4461
4462                 offset0 = BNX2_L2CTX_TYPE;
4463                 offset1 = BNX2_L2CTX_CMD_TYPE;
4464                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4465                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4466         }
4467         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4468         cnic_ctx_wr(dev, cid_addr, offset0, val);
4469
4470         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4471         cnic_ctx_wr(dev, cid_addr, offset1, val);
4472
4473         txbd = udev->l2_ring;
4474
4475         buf_map = udev->l2_buf_map;
4476         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
4477                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4478                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4479         }
4480         val = (u64) ring_map >> 32;
4481         cnic_ctx_wr(dev, cid_addr, offset2, val);
4482         txbd->tx_bd_haddr_hi = val;
4483
4484         val = (u64) ring_map & 0xffffffff;
4485         cnic_ctx_wr(dev, cid_addr, offset3, val);
4486         txbd->tx_bd_haddr_lo = val;
4487 }
4488
4489 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4490 {
4491         struct cnic_local *cp = dev->cnic_priv;
4492         struct cnic_eth_dev *ethdev = cp->ethdev;
4493         struct cnic_uio_dev *udev = cp->udev;
4494         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4495         int i;
4496         struct rx_bd *rxbd;
4497         struct status_block *s_blk = cp->status_blk.gen;
4498         dma_addr_t ring_map = udev->l2_ring_map;
4499
4500         sb_id = cp->status_blk_num;
4501         cnic_init_context(dev, 2);
4502         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4503         coal_reg = BNX2_HC_COMMAND;
4504         coal_val = CNIC_RD(dev, coal_reg);
4505         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4506                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4507
4508                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4509                 coal_reg = BNX2_HC_COALESCE_NOW;
4510                 coal_val = 1 << (11 + sb_id);
4511         }
4512         i = 0;
4513         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4514                 CNIC_WR(dev, coal_reg, coal_val);
4515                 udelay(10);
4516                 i++;
4517                 barrier();
4518         }
4519         cp->rx_cons = *cp->rx_cons_ptr;
4520
4521         cid_addr = GET_CID_ADDR(2);
4522         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4523               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4524         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4525
4526         if (sb_id == 0)
4527                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4528         else
4529                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4530         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4531
4532         rxbd = udev->l2_ring + BCM_PAGE_SIZE;
4533         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
4534                 dma_addr_t buf_map;
4535                 int n = (i % cp->l2_rx_ring_size) + 1;
4536
4537                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4538                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4539                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4540                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4541                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4542         }
4543         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4544         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4545         rxbd->rx_bd_haddr_hi = val;
4546
4547         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4548         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4549         rxbd->rx_bd_haddr_lo = val;
4550
4551         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4552         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4553 }
4554
4555 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4556 {
4557         struct kwqe *wqes[1], l2kwqe;
4558
4559         memset(&l2kwqe, 0, sizeof(l2kwqe));
4560         wqes[0] = &l2kwqe;
4561         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4562                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4563                                KWQE_OPCODE_SHIFT) | 2;
4564         dev->submit_kwqes(dev, wqes, 1);
4565 }
4566
4567 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4568 {
4569         struct cnic_local *cp = dev->cnic_priv;
4570         u32 val;
4571
4572         val = cp->func << 2;
4573
4574         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4575
4576         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4577                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4578         dev->mac_addr[0] = (u8) (val >> 8);
4579         dev->mac_addr[1] = (u8) val;
4580
4581         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4582
4583         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4584                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4585         dev->mac_addr[2] = (u8) (val >> 24);
4586         dev->mac_addr[3] = (u8) (val >> 16);
4587         dev->mac_addr[4] = (u8) (val >> 8);
4588         dev->mac_addr[5] = (u8) val;
4589
4590         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4591
4592         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4593         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4594                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4595
4596         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4597         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4598         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4599 }
4600
4601 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4602 {
4603         struct cnic_local *cp = dev->cnic_priv;
4604         struct cnic_eth_dev *ethdev = cp->ethdev;
4605         struct status_block *sblk = cp->status_blk.gen;
4606         u32 val, kcq_cid_addr, kwq_cid_addr;
4607         int err;
4608
4609         cnic_set_bnx2_mac(dev);
4610
4611         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4612         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4613         if (BCM_PAGE_BITS > 12)
4614                 val |= (12 - 8)  << 4;
4615         else
4616                 val |= (BCM_PAGE_BITS - 8)  << 4;
4617
4618         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4619
4620         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4621         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4622         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4623
4624         err = cnic_setup_5709_context(dev, 1);
4625         if (err)
4626                 return err;
4627
4628         cnic_init_context(dev, KWQ_CID);
4629         cnic_init_context(dev, KCQ_CID);
4630
4631         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4632         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4633
4634         cp->max_kwq_idx = MAX_KWQ_IDX;
4635         cp->kwq_prod_idx = 0;
4636         cp->kwq_con_idx = 0;
4637         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4638
4639         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
4640                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4641         else
4642                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4643
4644         /* Initialize the kernel work queue context. */
4645         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4646               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4647         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4648
4649         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4650         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4651
4652         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4653         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4654
4655         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4656         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4657
4658         val = (u32) cp->kwq_info.pgtbl_map;
4659         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4660
4661         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4662         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4663
4664         cp->kcq1.sw_prod_idx = 0;
4665         cp->kcq1.hw_prod_idx_ptr =
4666                 (u16 *) &sblk->status_completion_producer_index;
4667
4668         cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
4669
4670         /* Initialize the kernel complete queue context. */
4671         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4672               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4673         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4674
4675         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4676         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4677
4678         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4679         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4680
4681         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4682         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4683
4684         val = (u32) cp->kcq1.dma.pgtbl_map;
4685         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4686
4687         cp->int_num = 0;
4688         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4689                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4690                 u32 sb_id = cp->status_blk_num;
4691                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4692
4693                 cp->kcq1.hw_prod_idx_ptr =
4694                         (u16 *) &msblk->status_completion_producer_index;
4695                 cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
4696                 cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
4697                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4698                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4699                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4700         }
4701
4702         /* Enable Commnad Scheduler notification when we write to the
4703          * host producer index of the kernel contexts. */
4704         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4705
4706         /* Enable Command Scheduler notification when we write to either
4707          * the Send Queue or Receive Queue producer indexes of the kernel
4708          * bypass contexts. */
4709         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4710         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4711
4712         /* Notify COM when the driver post an application buffer. */
4713         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4714
4715         /* Set the CP and COM doorbells.  These two processors polls the
4716          * doorbell for a non zero value before running.  This must be done
4717          * after setting up the kernel queue contexts. */
4718         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4719         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4720
4721         cnic_init_bnx2_tx_ring(dev);
4722         cnic_init_bnx2_rx_ring(dev);
4723
4724         err = cnic_init_bnx2_irq(dev);
4725         if (err) {
4726                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4727                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4728                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4729                 return err;
4730         }
4731
4732         return 0;
4733 }
4734
4735 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4736 {
4737         struct cnic_local *cp = dev->cnic_priv;
4738         struct cnic_eth_dev *ethdev = cp->ethdev;
4739         u32 start_offset = ethdev->ctx_tbl_offset;
4740         int i;
4741
4742         for (i = 0; i < cp->ctx_blks; i++) {
4743                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4744                 dma_addr_t map = ctx->mapping;
4745
4746                 if (cp->ctx_align) {
4747                         unsigned long mask = cp->ctx_align - 1;
4748
4749                         map = (map + mask) & ~mask;
4750                 }
4751
4752                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4753         }
4754 }
4755
4756 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4757 {
4758         struct cnic_local *cp = dev->cnic_priv;
4759         struct cnic_eth_dev *ethdev = cp->ethdev;
4760         int err = 0;
4761
4762         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4763                      (unsigned long) dev);
4764         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4765                 err = cnic_request_irq(dev);
4766
4767         return err;
4768 }
4769
4770 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4771                                                 u16 sb_id, u8 sb_index,
4772                                                 u8 disable)
4773 {
4774
4775         u32 addr = BAR_CSTRORM_INTMEM +
4776                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4777                         offsetof(struct hc_status_block_data_e1x, index_data) +
4778                         sizeof(struct hc_index_data)*sb_index +
4779                         offsetof(struct hc_index_data, flags);
4780         u16 flags = CNIC_RD16(dev, addr);
4781         /* clear and set */
4782         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4783         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4784                   HC_INDEX_DATA_HC_ENABLED);
4785         CNIC_WR16(dev, addr, flags);
4786 }
4787
4788 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4789 {
4790         struct cnic_local *cp = dev->cnic_priv;
4791         u8 sb_id = cp->status_blk_num;
4792
4793         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4794                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4795                         offsetof(struct hc_status_block_data_e1x, index_data) +
4796                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4797                         offsetof(struct hc_index_data, timeout), 64 / 4);
4798         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4799 }
4800
4801 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4802 {
4803 }
4804
4805 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4806                                     struct client_init_ramrod_data *data)
4807 {
4808         struct cnic_local *cp = dev->cnic_priv;
4809         struct cnic_uio_dev *udev = cp->udev;
4810         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4811         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4812         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4813         int i;
4814         u32 cli = cp->ethdev->iscsi_l2_client_id;
4815         u32 val;
4816
4817         memset(txbd, 0, BCM_PAGE_SIZE);
4818
4819         buf_map = udev->l2_buf_map;
4820         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4821                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4822                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4823
4824                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4825                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4826                 reg_bd->addr_hi = start_bd->addr_hi;
4827                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4828                 start_bd->nbytes = cpu_to_le16(0x10);
4829                 start_bd->nbd = cpu_to_le16(3);
4830                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4831                 start_bd->general_data = (UNICAST_ADDRESS <<
4832                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
4833                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4834
4835         }
4836
4837         val = (u64) ring_map >> 32;
4838         txbd->next_bd.addr_hi = cpu_to_le32(val);
4839
4840         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4841
4842         val = (u64) ring_map & 0xffffffff;
4843         txbd->next_bd.addr_lo = cpu_to_le32(val);
4844
4845         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4846
4847         /* Other ramrod params */
4848         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4849         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4850
4851         /* reset xstorm per client statistics */
4852         if (cli < MAX_STAT_COUNTER_ID) {
4853                 data->general.statistics_zero_flg = 1;
4854                 data->general.statistics_en_flg = 1;
4855                 data->general.statistics_counter_id = cli;
4856         }
4857
4858         cp->tx_cons_ptr =
4859                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4860 }
4861
4862 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4863                                     struct client_init_ramrod_data *data)
4864 {
4865         struct cnic_local *cp = dev->cnic_priv;
4866         struct cnic_uio_dev *udev = cp->udev;
4867         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4868                                 BCM_PAGE_SIZE);
4869         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4870                                 (udev->l2_ring + (2 * BCM_PAGE_SIZE));
4871         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4872         int i;
4873         u32 cli = cp->ethdev->iscsi_l2_client_id;
4874         int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4875         u32 val;
4876         dma_addr_t ring_map = udev->l2_ring_map;
4877
4878         /* General data */
4879         data->general.client_id = cli;
4880         data->general.activate_flg = 1;
4881         data->general.sp_client_id = cli;
4882         data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4883         data->general.func_id = cp->pfid;
4884
4885         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4886                 dma_addr_t buf_map;
4887                 int n = (i % cp->l2_rx_ring_size) + 1;
4888
4889                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4890                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4891                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4892         }
4893
4894         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4895         rxbd->addr_hi = cpu_to_le32(val);
4896         data->rx.bd_page_base.hi = cpu_to_le32(val);
4897
4898         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4899         rxbd->addr_lo = cpu_to_le32(val);
4900         data->rx.bd_page_base.lo = cpu_to_le32(val);
4901
4902         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4903         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4904         rxcqe->addr_hi = cpu_to_le32(val);
4905         data->rx.cqe_page_base.hi = cpu_to_le32(val);
4906
4907         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4908         rxcqe->addr_lo = cpu_to_le32(val);
4909         data->rx.cqe_page_base.lo = cpu_to_le32(val);
4910
4911         /* Other ramrod params */
4912         data->rx.client_qzone_id = cl_qzone_id;
4913         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
4914         data->rx.status_block_id = BNX2X_DEF_SB_ID;
4915
4916         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4917
4918         data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
4919         data->rx.outer_vlan_removal_enable_flg = 1;
4920         data->rx.silent_vlan_removal_flg = 1;
4921         data->rx.silent_vlan_value = 0;
4922         data->rx.silent_vlan_mask = 0xffff;
4923
4924         cp->rx_cons_ptr =
4925                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4926         cp->rx_cons = *cp->rx_cons_ptr;
4927 }
4928
4929 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
4930 {
4931         struct cnic_local *cp = dev->cnic_priv;
4932         u32 pfid = cp->pfid;
4933
4934         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4935                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4936         cp->kcq1.sw_prod_idx = 0;
4937
4938         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4939                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4940
4941                 cp->kcq1.hw_prod_idx_ptr =
4942                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4943                 cp->kcq1.status_idx_ptr =
4944                         &sb->sb.running_index[SM_RX_ID];
4945         } else {
4946                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
4947
4948                 cp->kcq1.hw_prod_idx_ptr =
4949                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4950                 cp->kcq1.status_idx_ptr =
4951                         &sb->sb.running_index[SM_RX_ID];
4952         }
4953
4954         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4955                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4956
4957                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
4958                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
4959                 cp->kcq2.sw_prod_idx = 0;
4960                 cp->kcq2.hw_prod_idx_ptr =
4961                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
4962                 cp->kcq2.status_idx_ptr =
4963                         &sb->sb.running_index[SM_RX_ID];
4964         }
4965 }
4966
4967 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4968 {
4969         struct cnic_local *cp = dev->cnic_priv;
4970         struct cnic_eth_dev *ethdev = cp->ethdev;
4971         int func = CNIC_FUNC(cp), ret;
4972         u32 pfid;
4973
4974         dev->stats_addr = ethdev->addr_drv_info_to_mcp;
4975         cp->port_mode = CHIP_PORT_MODE_NONE;
4976
4977         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4978                 u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);
4979
4980                 if (!(val & 1))
4981                         val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN);
4982                 else
4983                         val = (val >> 1) & 1;
4984
4985                 if (val) {
4986                         cp->port_mode = CHIP_4_PORT_MODE;
4987                         cp->pfid = func >> 1;
4988                 } else {
4989                         cp->port_mode = CHIP_2_PORT_MODE;
4990                         cp->pfid = func & 0x6;
4991                 }
4992         } else {
4993                 cp->pfid = func;
4994         }
4995         pfid = cp->pfid;
4996
4997         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4998                                cp->iscsi_start_cid, 0);
4999
5000         if (ret)
5001                 return -ENOMEM;
5002
5003         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
5004                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5005                                         cp->fcoe_start_cid, 0);
5006
5007                 if (ret)
5008                         return -ENOMEM;
5009         }
5010
5011         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
5012
5013         cnic_init_bnx2x_kcq(dev);
5014
5015         /* Only 1 EQ */
5016         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5017         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5018                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5019         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5020                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5021                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5022         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5023                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5024                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5025         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5026                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5027                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5028         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5029                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5030                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5031         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5032                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5033         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5034                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5035         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5036                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5037                 HC_INDEX_ISCSI_EQ_CONS);
5038
5039         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5040                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5041                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
5042         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5043                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5044                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
5045
5046         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
5047                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
5048
5049         cnic_setup_bnx2x_context(dev);
5050
5051         ret = cnic_init_bnx2x_irq(dev);
5052         if (ret)
5053                 return ret;
5054
5055         return 0;
5056 }
5057
5058 static void cnic_init_rings(struct cnic_dev *dev)
5059 {
5060         struct cnic_local *cp = dev->cnic_priv;
5061         struct cnic_uio_dev *udev = cp->udev;
5062
5063         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5064                 return;
5065
5066         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5067                 cnic_init_bnx2_tx_ring(dev);
5068                 cnic_init_bnx2_rx_ring(dev);
5069                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5070         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5071                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5072                 u32 cid = cp->ethdev->iscsi_l2_cid;
5073                 u32 cl_qzone_id;
5074                 struct client_init_ramrod_data *data;
5075                 union l5cm_specific_data l5_data;
5076                 struct ustorm_eth_rx_producers rx_prods = {0};
5077                 u32 off, i, *cid_ptr;
5078
5079                 rx_prods.bd_prod = 0;
5080                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
5081                 barrier();
5082
5083                 cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
5084
5085                 off = BAR_USTRORM_INTMEM +
5086                         (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) ?
5087                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
5088                          USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
5089
5090                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5091                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5092
5093                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5094
5095                 data = udev->l2_buf;
5096                 cid_ptr = udev->l2_buf + 12;
5097
5098                 memset(data, 0, sizeof(*data));
5099
5100                 cnic_init_bnx2x_tx_ring(dev, data);
5101                 cnic_init_bnx2x_rx_ring(dev, data);
5102
5103                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5104                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5105
5106                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5107
5108                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5109                         cid, ETH_CONNECTION_TYPE, &l5_data);
5110
5111                 i = 0;
5112                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5113                        ++i < 10)
5114                         msleep(1);
5115
5116                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5117                         netdev_err(dev->netdev,
5118                                 "iSCSI CLIENT_SETUP did not complete\n");
5119                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5120                 cnic_ring_ctl(dev, cid, cli, 1);
5121                 *cid_ptr = cid;
5122         }
5123 }
5124
5125 static void cnic_shutdown_rings(struct cnic_dev *dev)
5126 {
5127         struct cnic_local *cp = dev->cnic_priv;
5128         struct cnic_uio_dev *udev = cp->udev;
5129         void *rx_ring;
5130
5131         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5132                 return;
5133
5134         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5135                 cnic_shutdown_bnx2_rx_ring(dev);
5136         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5137                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5138                 u32 cid = cp->ethdev->iscsi_l2_cid;
5139                 union l5cm_specific_data l5_data;
5140                 int i;
5141
5142                 cnic_ring_ctl(dev, cid, cli, 0);
5143
5144                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5145
5146                 l5_data.phy_address.lo = cli;
5147                 l5_data.phy_address.hi = 0;
5148                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5149                         cid, ETH_CONNECTION_TYPE, &l5_data);
5150                 i = 0;
5151                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5152                        ++i < 10)
5153                         msleep(1);
5154
5155                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5156                         netdev_err(dev->netdev,
5157                                 "iSCSI CLIENT_HALT did not complete\n");
5158                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5159
5160                 memset(&l5_data, 0, sizeof(l5_data));
5161                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5162                         cid, NONE_CONNECTION_TYPE, &l5_data);
5163                 msleep(10);
5164         }
5165         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5166         rx_ring = udev->l2_ring + BCM_PAGE_SIZE;
5167         memset(rx_ring, 0, BCM_PAGE_SIZE);
5168 }
5169
5170 static int cnic_register_netdev(struct cnic_dev *dev)
5171 {
5172         struct cnic_local *cp = dev->cnic_priv;
5173         struct cnic_eth_dev *ethdev = cp->ethdev;
5174         int err;
5175
5176         if (!ethdev)
5177                 return -ENODEV;
5178
5179         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5180                 return 0;
5181
5182         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5183         if (err)
5184                 netdev_err(dev->netdev, "register_cnic failed\n");
5185
5186         return err;
5187 }
5188
5189 static void cnic_unregister_netdev(struct cnic_dev *dev)
5190 {
5191         struct cnic_local *cp = dev->cnic_priv;
5192         struct cnic_eth_dev *ethdev = cp->ethdev;
5193
5194         if (!ethdev)
5195                 return;
5196
5197         ethdev->drv_unregister_cnic(dev->netdev);
5198 }
5199
5200 static int cnic_start_hw(struct cnic_dev *dev)
5201 {
5202         struct cnic_local *cp = dev->cnic_priv;
5203         struct cnic_eth_dev *ethdev = cp->ethdev;
5204         int err;
5205
5206         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5207                 return -EALREADY;
5208
5209         dev->regview = ethdev->io_base;
5210         pci_dev_get(dev->pcidev);
5211         cp->func = PCI_FUNC(dev->pcidev->devfn);
5212         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5213         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5214
5215         err = cp->alloc_resc(dev);
5216         if (err) {
5217                 netdev_err(dev->netdev, "allocate resource failure\n");
5218                 goto err1;
5219         }
5220
5221         err = cp->start_hw(dev);
5222         if (err)
5223                 goto err1;
5224
5225         err = cnic_cm_open(dev);
5226         if (err)
5227                 goto err1;
5228
5229         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5230
5231         cp->enable_int(dev);
5232
5233         return 0;
5234
5235 err1:
5236         cp->free_resc(dev);
5237         pci_dev_put(dev->pcidev);
5238         return err;
5239 }
5240
5241 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5242 {
5243         cnic_disable_bnx2_int_sync(dev);
5244
5245         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5246         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5247
5248         cnic_init_context(dev, KWQ_CID);
5249         cnic_init_context(dev, KCQ_CID);
5250
5251         cnic_setup_5709_context(dev, 0);
5252         cnic_free_irq(dev);
5253
5254         cnic_free_resc(dev);
5255 }
5256
5257
5258 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5259 {
5260         struct cnic_local *cp = dev->cnic_priv;
5261
5262         cnic_free_irq(dev);
5263         *cp->kcq1.hw_prod_idx_ptr = 0;
5264         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5265                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5266         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5267         cnic_free_resc(dev);
5268 }
5269
5270 static void cnic_stop_hw(struct cnic_dev *dev)
5271 {
5272         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5273                 struct cnic_local *cp = dev->cnic_priv;
5274                 int i = 0;
5275
5276                 /* Need to wait for the ring shutdown event to complete
5277                  * before clearing the CNIC_UP flag.
5278                  */
5279                 while (cp->udev->uio_dev != -1 && i < 15) {
5280                         msleep(100);
5281                         i++;
5282                 }
5283                 cnic_shutdown_rings(dev);
5284                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5285                 RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5286                 synchronize_rcu();
5287                 cnic_cm_shutdown(dev);
5288                 cp->stop_hw(dev);
5289                 pci_dev_put(dev->pcidev);
5290         }
5291 }
5292
5293 static void cnic_free_dev(struct cnic_dev *dev)
5294 {
5295         int i = 0;
5296
5297         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5298                 msleep(100);
5299                 i++;
5300         }
5301         if (atomic_read(&dev->ref_count) != 0)
5302                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5303
5304         netdev_info(dev->netdev, "Removed CNIC device\n");
5305         dev_put(dev->netdev);
5306         kfree(dev);
5307 }
5308
5309 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5310                                        struct pci_dev *pdev)
5311 {
5312         struct cnic_dev *cdev;
5313         struct cnic_local *cp;
5314         int alloc_size;
5315
5316         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5317
5318         cdev = kzalloc(alloc_size , GFP_KERNEL);
5319         if (cdev == NULL) {
5320                 netdev_err(dev, "allocate dev struct failure\n");
5321                 return NULL;
5322         }
5323
5324         cdev->netdev = dev;
5325         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5326         cdev->register_device = cnic_register_device;
5327         cdev->unregister_device = cnic_unregister_device;
5328         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5329
5330         cp = cdev->cnic_priv;
5331         cp->dev = cdev;
5332         cp->l2_single_buf_size = 0x400;
5333         cp->l2_rx_ring_size = 3;
5334
5335         spin_lock_init(&cp->cnic_ulp_lock);
5336
5337         netdev_info(dev, "Added CNIC device\n");
5338
5339         return cdev;
5340 }
5341
5342 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5343 {
5344         struct pci_dev *pdev;
5345         struct cnic_dev *cdev;
5346         struct cnic_local *cp;
5347         struct cnic_eth_dev *ethdev = NULL;
5348         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5349
5350         probe = symbol_get(bnx2_cnic_probe);
5351         if (probe) {
5352                 ethdev = (*probe)(dev);
5353                 symbol_put(bnx2_cnic_probe);
5354         }
5355         if (!ethdev)
5356                 return NULL;
5357
5358         pdev = ethdev->pdev;
5359         if (!pdev)
5360                 return NULL;
5361
5362         dev_hold(dev);
5363         pci_dev_get(pdev);
5364         if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5365              pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5366             (pdev->revision < 0x10)) {
5367                 pci_dev_put(pdev);
5368                 goto cnic_err;
5369         }
5370         pci_dev_put(pdev);
5371
5372         cdev = cnic_alloc_dev(dev, pdev);
5373         if (cdev == NULL)
5374                 goto cnic_err;
5375
5376         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5377         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5378
5379         cp = cdev->cnic_priv;
5380         cp->ethdev = ethdev;
5381         cdev->pcidev = pdev;
5382         cp->chip_id = ethdev->chip_id;
5383
5384         cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5385
5386         cp->cnic_ops = &cnic_bnx2_ops;
5387         cp->start_hw = cnic_start_bnx2_hw;
5388         cp->stop_hw = cnic_stop_bnx2_hw;
5389         cp->setup_pgtbl = cnic_setup_page_tbl;
5390         cp->alloc_resc = cnic_alloc_bnx2_resc;
5391         cp->free_resc = cnic_free_resc;
5392         cp->start_cm = cnic_cm_init_bnx2_hw;
5393         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5394         cp->enable_int = cnic_enable_bnx2_int;
5395         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5396         cp->close_conn = cnic_close_bnx2_conn;
5397         return cdev;
5398
5399 cnic_err:
5400         dev_put(dev);
5401         return NULL;
5402 }
5403
5404 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5405 {
5406         struct pci_dev *pdev;
5407         struct cnic_dev *cdev;
5408         struct cnic_local *cp;
5409         struct cnic_eth_dev *ethdev = NULL;
5410         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5411
5412         probe = symbol_get(bnx2x_cnic_probe);
5413         if (probe) {
5414                 ethdev = (*probe)(dev);
5415                 symbol_put(bnx2x_cnic_probe);
5416         }
5417         if (!ethdev)
5418                 return NULL;
5419
5420         pdev = ethdev->pdev;
5421         if (!pdev)
5422                 return NULL;
5423
5424         dev_hold(dev);
5425         cdev = cnic_alloc_dev(dev, pdev);
5426         if (cdev == NULL) {
5427                 dev_put(dev);
5428                 return NULL;
5429         }
5430
5431         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5432         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5433
5434         cp = cdev->cnic_priv;
5435         cp->ethdev = ethdev;
5436         cdev->pcidev = pdev;
5437         cp->chip_id = ethdev->chip_id;
5438
5439         cdev->stats_addr = ethdev->addr_drv_info_to_mcp;
5440
5441         if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5442                 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5443         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
5444             !(ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE))
5445                 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5446
5447         if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
5448                 cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
5449
5450         memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);
5451
5452         cp->cnic_ops = &cnic_bnx2x_ops;
5453         cp->start_hw = cnic_start_bnx2x_hw;
5454         cp->stop_hw = cnic_stop_bnx2x_hw;
5455         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5456         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5457         cp->free_resc = cnic_free_resc;
5458         cp->start_cm = cnic_cm_init_bnx2x_hw;
5459         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5460         cp->enable_int = cnic_enable_bnx2x_int;
5461         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5462         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
5463                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5464         else
5465                 cp->ack_int = cnic_ack_bnx2x_msix;
5466         cp->close_conn = cnic_close_bnx2x_conn;
5467         return cdev;
5468 }
5469
5470 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5471 {
5472         struct ethtool_drvinfo drvinfo;
5473         struct cnic_dev *cdev = NULL;
5474
5475         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5476                 memset(&drvinfo, 0, sizeof(drvinfo));
5477                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5478
5479                 if (!strcmp(drvinfo.driver, "bnx2"))
5480                         cdev = init_bnx2_cnic(dev);
5481                 if (!strcmp(drvinfo.driver, "bnx2x"))
5482                         cdev = init_bnx2x_cnic(dev);
5483                 if (cdev) {
5484                         write_lock(&cnic_dev_lock);
5485                         list_add(&cdev->list, &cnic_dev_list);
5486                         write_unlock(&cnic_dev_lock);
5487                 }
5488         }
5489         return cdev;
5490 }
5491
5492 static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
5493                               u16 vlan_id)
5494 {
5495         int if_type;
5496
5497         rcu_read_lock();
5498         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5499                 struct cnic_ulp_ops *ulp_ops;
5500                 void *ctx;
5501
5502                 ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
5503                 if (!ulp_ops || !ulp_ops->indicate_netevent)
5504                         continue;
5505
5506                 ctx = cp->ulp_handle[if_type];
5507
5508                 ulp_ops->indicate_netevent(ctx, event, vlan_id);
5509         }
5510         rcu_read_unlock();
5511 }
5512
5513 /**
5514  * netdev event handler
5515  */
5516 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5517                                                          void *ptr)
5518 {
5519         struct net_device *netdev = ptr;
5520         struct cnic_dev *dev;
5521         int new_dev = 0;
5522
5523         dev = cnic_from_netdev(netdev);
5524
5525         if (!dev && (event == NETDEV_REGISTER || netif_running(netdev))) {
5526                 /* Check for the hot-plug device */
5527                 dev = is_cnic_dev(netdev);
5528                 if (dev) {
5529                         new_dev = 1;
5530                         cnic_hold(dev);
5531                 }
5532         }
5533         if (dev) {
5534                 struct cnic_local *cp = dev->cnic_priv;
5535
5536                 if (new_dev)
5537                         cnic_ulp_init(dev);
5538                 else if (event == NETDEV_UNREGISTER)
5539                         cnic_ulp_exit(dev);
5540
5541                 if (event == NETDEV_UP || (new_dev && netif_running(netdev))) {
5542                         if (cnic_register_netdev(dev) != 0) {
5543                                 cnic_put(dev);
5544                                 goto done;
5545                         }
5546                         if (!cnic_start_hw(dev))
5547                                 cnic_ulp_start(dev);
5548                 }
5549
5550                 cnic_rcv_netevent(cp, event, 0);
5551
5552                 if (event == NETDEV_GOING_DOWN) {
5553                         cnic_ulp_stop(dev);
5554                         cnic_stop_hw(dev);
5555                         cnic_unregister_netdev(dev);
5556                 } else if (event == NETDEV_UNREGISTER) {
5557                         write_lock(&cnic_dev_lock);
5558                         list_del_init(&dev->list);
5559                         write_unlock(&cnic_dev_lock);
5560
5561                         cnic_put(dev);
5562                         cnic_free_dev(dev);
5563                         goto done;
5564                 }
5565                 cnic_put(dev);
5566         } else {
5567                 struct net_device *realdev;
5568                 u16 vid;
5569
5570                 vid = cnic_get_vlan(netdev, &realdev);
5571                 if (realdev) {
5572                         dev = cnic_from_netdev(realdev);
5573                         if (dev) {
5574                                 vid |= VLAN_TAG_PRESENT;
5575                                 cnic_rcv_netevent(dev->cnic_priv, event, vid);
5576                                 cnic_put(dev);
5577                         }
5578                 }
5579         }
5580 done:
5581         return NOTIFY_DONE;
5582 }
5583
5584 static struct notifier_block cnic_netdev_notifier = {
5585         .notifier_call = cnic_netdev_event
5586 };
5587
5588 static void cnic_release(void)
5589 {
5590         struct cnic_dev *dev;
5591         struct cnic_uio_dev *udev;
5592
5593         while (!list_empty(&cnic_dev_list)) {
5594                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
5595                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5596                         cnic_ulp_stop(dev);
5597                         cnic_stop_hw(dev);
5598                 }
5599
5600                 cnic_ulp_exit(dev);
5601                 cnic_unregister_netdev(dev);
5602                 list_del_init(&dev->list);
5603                 cnic_free_dev(dev);
5604         }
5605         while (!list_empty(&cnic_udev_list)) {
5606                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5607                                   list);
5608                 cnic_free_uio(udev);
5609         }
5610 }
5611
5612 static int __init cnic_init(void)
5613 {
5614         int rc = 0;
5615
5616         pr_info("%s", version);
5617
5618         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5619         if (rc) {
5620                 cnic_release();
5621                 return rc;
5622         }
5623
5624         cnic_wq = create_singlethread_workqueue("cnic_wq");
5625         if (!cnic_wq) {
5626                 cnic_release();
5627                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5628                 return -ENOMEM;
5629         }
5630
5631         return 0;
5632 }
5633
5634 static void __exit cnic_exit(void)
5635 {
5636         unregister_netdevice_notifier(&cnic_netdev_notifier);
5637         cnic_release();
5638         destroy_workqueue(cnic_wq);
5639 }
5640
5641 module_init(cnic_init);
5642 module_exit(cnic_exit);