drivers/net/cnic.c

   1 /* cnic.c: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2010 Broadcom Corporation
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation.
   8  *
   9  * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
  10  * Modified and maintained by: Michael Chan <mchan@broadcom.com>
  11  */
  12
  13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  14
  15 #include <linux/module.h>
  16
  17 #include <linux/kernel.h>
  18 #include <linux/errno.h>
  19 #include <linux/list.h>
  20 #include <linux/slab.h>
  21 #include <linux/pci.h>
  22 #include <linux/init.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/uio_driver.h>
  25 #include <linux/in.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/delay.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_vlan.h>
  30 #include <linux/prefetch.h>
  31 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
  32 #define BCM_VLAN 1
  33 #endif
  34 #include <net/ip.h>
  35 #include <net/tcp.h>
  36 #include <net/route.h>
  37 #include <net/ipv6.h>
  38 #include <net/ip6_route.h>
  39 #include <net/ip6_checksum.h>
  40 #include <scsi/iscsi_if.h>
  41
  42 #include "cnic_if.h"
  43 #include "bnx2.h"
  44 #include "bnx2x/bnx2x_reg.h"
  45 #include "bnx2x/bnx2x_fw_defs.h"
  46 #include "bnx2x/bnx2x_hsi.h"
  47 #include "../scsi/bnx2i/57xx_iscsi_constants.h"
  48 #include "../scsi/bnx2i/57xx_iscsi_hsi.h"
  49 #include "cnic.h"
  50 #include "cnic_defs.h"
  51
  52 #define DRV_MODULE_NAME         "cnic"
  53
  54 static char version[] __devinitdata =
  55         "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  56
  57 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  58               "Chen (zongxi@broadcom.com");
  59 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
  60 MODULE_LICENSE("GPL");
  61 MODULE_VERSION(CNIC_MODULE_VERSION);
  62
  63 /* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
  64 static LIST_HEAD(cnic_dev_list);
  65 static LIST_HEAD(cnic_udev_list);
  66 static DEFINE_RWLOCK(cnic_dev_lock);
  67 static DEFINE_MUTEX(cnic_lock);
  68
  69 static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  70
  71 /* helper function, assuming cnic_lock is held */
  72 static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
  73 {
  74         return rcu_dereference_protected(cnic_ulp_tbl[type],
  75                                          lockdep_is_held(&cnic_lock));
  76 }
  77
  78 static int cnic_service_bnx2(void *, void *);
  79 static int cnic_service_bnx2x(void *, void *);
  80 static int cnic_ctl(void *, struct cnic_ctl_info *);
  81
  82 static struct cnic_ops cnic_bnx2_ops = {
  83         .cnic_owner     = THIS_MODULE,
  84         .cnic_handler   = cnic_service_bnx2,
  85         .cnic_ctl       = cnic_ctl,
  86 };
  87
  88 static struct cnic_ops cnic_bnx2x_ops = {
  89         .cnic_owner     = THIS_MODULE,
  90         .cnic_handler   = cnic_service_bnx2x,
  91         .cnic_ctl       = cnic_ctl,
  92 };
  93
  94 static struct workqueue_struct *cnic_wq;
  95
  96 static void cnic_shutdown_rings(struct cnic_dev *);
  97 static void cnic_init_rings(struct cnic_dev *);
  98 static int cnic_cm_set_pg(struct cnic_sock *);
  99
 100 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
 101 {
 102         struct cnic_uio_dev *udev = uinfo->priv;
 103         struct cnic_dev *dev;
 104
 105         if (!capable(CAP_NET_ADMIN))
 106                 return -EPERM;
 107
 108         if (udev->uio_dev != -1)
 109                 return -EBUSY;
 110
 111         rtnl_lock();
 112         dev = udev->dev;
 113
 114         if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 115                 rtnl_unlock();
 116                 return -ENODEV;
 117         }
 118
 119         udev->uio_dev = iminor(inode);
 120
 121         cnic_shutdown_rings(dev);
 122         cnic_init_rings(dev);
 123         rtnl_unlock();
 124
 125         return 0;
 126 }
 127
 128 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 129 {
 130         struct cnic_uio_dev *udev = uinfo->priv;
 131
 132         udev->uio_dev = -1;
 133         return 0;
 134 }
 135
 136 static inline void cnic_hold(struct cnic_dev *dev)
 137 {
 138         atomic_inc(&dev->ref_count);
 139 }
 140
 141 static inline void cnic_put(struct cnic_dev *dev)
 142 {
 143         atomic_dec(&dev->ref_count);
 144 }
 145
 146 static inline void csk_hold(struct cnic_sock *csk)
 147 {
 148         atomic_inc(&csk->ref_count);
 149 }
 150
 151 static inline void csk_put(struct cnic_sock *csk)
 152 {
 153         atomic_dec(&csk->ref_count);
 154 }
 155
 156 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 157 {
 158         struct cnic_dev *cdev;
 159
 160         read_lock(&cnic_dev_lock);
 161         list_for_each_entry(cdev, &cnic_dev_list, list) {
 162                 if (netdev == cdev->netdev) {
 163                         cnic_hold(cdev);
 164                         read_unlock(&cnic_dev_lock);
 165                         return cdev;
 166                 }
 167         }
 168         read_unlock(&cnic_dev_lock);
 169         return NULL;
 170 }
 171
 172 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 173 {
 174         atomic_inc(&ulp_ops->ref_count);
 175 }
 176
 177 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 178 {
 179         atomic_dec(&ulp_ops->ref_count);
 180 }
 181
 182 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 183 {
 184         struct cnic_local *cp = dev->cnic_priv;
 185         struct cnic_eth_dev *ethdev = cp->ethdev;
 186         struct drv_ctl_info info;
 187         struct drv_ctl_io *io = &info.data.io;
 188
 189         info.cmd = DRV_CTL_CTX_WR_CMD;
 190         io->cid_addr = cid_addr;
 191         io->offset = off;
 192         io->data = val;
 193         ethdev->drv_ctl(dev->netdev, &info);
 194 }
 195
 196 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 197 {
 198         struct cnic_local *cp = dev->cnic_priv;
 199         struct cnic_eth_dev *ethdev = cp->ethdev;
 200         struct drv_ctl_info info;
 201         struct drv_ctl_io *io = &info.data.io;
 202
 203         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 204         io->offset = off;
 205         io->dma_addr = addr;
 206         ethdev->drv_ctl(dev->netdev, &info);
 207 }
 208
 209 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 210 {
 211         struct cnic_local *cp = dev->cnic_priv;
 212         struct cnic_eth_dev *ethdev = cp->ethdev;
 213         struct drv_ctl_info info;
 214         struct drv_ctl_l2_ring *ring = &info.data.ring;
 215
 216         if (start)
 217                 info.cmd = DRV_CTL_START_L2_CMD;
 218         else
 219                 info.cmd = DRV_CTL_STOP_L2_CMD;
 220
 221         ring->cid = cid;
 222         ring->client_id = cl_id;
 223         ethdev->drv_ctl(dev->netdev, &info);
 224 }
 225
 226 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 227 {
 228         struct cnic_local *cp = dev->cnic_priv;
 229         struct cnic_eth_dev *ethdev = cp->ethdev;
 230         struct drv_ctl_info info;
 231         struct drv_ctl_io *io = &info.data.io;
 232
 233         info.cmd = DRV_CTL_IO_WR_CMD;
 234         io->offset = off;
 235         io->data = val;
 236         ethdev->drv_ctl(dev->netdev, &info);
 237 }
 238
 239 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 240 {
 241         struct cnic_local *cp = dev->cnic_priv;
 242         struct cnic_eth_dev *ethdev = cp->ethdev;
 243         struct drv_ctl_info info;
 244         struct drv_ctl_io *io = &info.data.io;
 245
 246         info.cmd = DRV_CTL_IO_RD_CMD;
 247         io->offset = off;
 248         ethdev->drv_ctl(dev->netdev, &info);
 249         return io->data;
 250 }
 251
 252 static int cnic_in_use(struct cnic_sock *csk)
 253 {
 254         return test_bit(SK_F_INUSE, &csk->flags);
 255 }
 256
 257 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
 258 {
 259         struct cnic_local *cp = dev->cnic_priv;
 260         struct cnic_eth_dev *ethdev = cp->ethdev;
 261         struct drv_ctl_info info;
 262
 263         info.cmd = cmd;
 264         info.data.credit.credit_count = count;
 265         ethdev->drv_ctl(dev->netdev, &info);
 266 }
 267
 268 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 269 {
 270         u32 i;
 271
 272         for (i = 0; i < cp->max_cid_space; i++) {
 273                 if (cp->ctx_tbl[i].cid == cid) {
 274                         *l5_cid = i;
 275                         return 0;
 276                 }
 277         }
 278         return -EINVAL;
 279 }
 280
 281 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 282                            struct cnic_sock *csk)
 283 {
 284         struct iscsi_path path_req;
 285         char *buf = NULL;
 286         u16 len = 0;
 287         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 288         struct cnic_ulp_ops *ulp_ops;
 289         struct cnic_uio_dev *udev = cp->udev;
 290         int rc = 0, retry = 0;
 291
 292         if (!udev || udev->uio_dev == -1)
 293                 return -ENODEV;
 294
 295         if (csk) {
 296                 len = sizeof(path_req);
 297                 buf = (char *) &path_req;
 298                 memset(&path_req, 0, len);
 299
 300                 msg_type = ISCSI_KEVENT_PATH_REQ;
 301                 path_req.handle = (u64) csk->l5_cid;
 302                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 303                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 304                                sizeof(struct in6_addr));
 305                         path_req.ip_addr_len = 16;
 306                 } else {
 307                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 308                                sizeof(struct in_addr));
 309                         path_req.ip_addr_len = 4;
 310                 }
 311                 path_req.vlan_id = csk->vlan_id;
 312                 path_req.pmtu = csk->mtu;
 313         }
 314
 315         while (retry < 3) {
 316                 rc = 0;
 317                 rcu_read_lock();
 318                 ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
 319                 if (ulp_ops)
 320                         rc = ulp_ops->iscsi_nl_send_msg(
 321                                 cp->ulp_handle[CNIC_ULP_ISCSI],
 322                                 msg_type, buf, len);
 323                 rcu_read_unlock();
 324                 if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
 325                         break;
 326
 327                 msleep(100);
 328                 retry++;
 329         }
 330         return 0;
 331 }
 332
 333 static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
 334
 335 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 336                                   char *buf, u16 len)
 337 {
 338         int rc = -EINVAL;
 339
 340         switch (msg_type) {
 341         case ISCSI_UEVENT_PATH_UPDATE: {
 342                 struct cnic_local *cp;
 343                 u32 l5_cid;
 344                 struct cnic_sock *csk;
 345                 struct iscsi_path *path_resp;
 346
 347                 if (len < sizeof(*path_resp))
 348                         break;
 349
 350                 path_resp = (struct iscsi_path *) buf;
 351                 cp = dev->cnic_priv;
 352                 l5_cid = (u32) path_resp->handle;
 353                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 354                         break;
 355
 356                 rcu_read_lock();
 357                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
 358                         rc = -ENODEV;
 359                         rcu_read_unlock();
 360                         break;
 361                 }
 362                 csk = &cp->csk_tbl[l5_cid];
 363                 csk_hold(csk);
 364                 if (cnic_in_use(csk) &&
 365                     test_bit(SK_F_CONNECT_START, &csk->flags)) {
 366
 367                         memcpy(csk->ha, path_resp->mac_addr, 6);
 368                         if (test_bit(SK_F_IPV6, &csk->flags))
 369                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 370                                        sizeof(struct in6_addr));
 371                         else
 372                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 373                                        sizeof(struct in_addr));
 374
 375                         if (is_valid_ether_addr(csk->ha)) {
 376                                 cnic_cm_set_pg(csk);
 377                         } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
 378                                 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 379
 380                                 cnic_cm_upcall(cp, csk,
 381                                         L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
 382                                 clear_bit(SK_F_CONNECT_START, &csk->flags);
 383                         }
 384                 }
 385                 csk_put(csk);
 386                 rcu_read_unlock();
 387                 rc = 0;
 388         }
 389         }
 390
 391         return rc;
 392 }
 393
 394 static int cnic_offld_prep(struct cnic_sock *csk)
 395 {
 396         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 397                 return 0;
 398
 399         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 400                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 401                 return 0;
 402         }
 403
 404         return 1;
 405 }
 406
 407 static int cnic_close_prep(struct cnic_sock *csk)
 408 {
 409         clear_bit(SK_F_CONNECT_START, &csk->flags);
 410         smp_mb__after_clear_bit();
 411
 412         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 413                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 414                         msleep(1);
 415
 416                 return 1;
 417         }
 418         return 0;
 419 }
 420
 421 static int cnic_abort_prep(struct cnic_sock *csk)
 422 {
 423         clear_bit(SK_F_CONNECT_START, &csk->flags);
 424         smp_mb__after_clear_bit();
 425
 426         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 427                 msleep(1);
 428
 429         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 430                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 431                 return 1;
 432         }
 433
 434         return 0;
 435 }
 436
 437 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 438 {
 439         struct cnic_dev *dev;
 440
 441         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 442                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 443                 return -EINVAL;
 444         }
 445         mutex_lock(&cnic_lock);
 446         if (cnic_ulp_tbl_prot(ulp_type)) {
 447                 pr_err("%s: Type %d has already been registered\n",
 448                        __func__, ulp_type);
 449                 mutex_unlock(&cnic_lock);
 450                 return -EBUSY;
 451         }
 452
 453         read_lock(&cnic_dev_lock);
 454         list_for_each_entry(dev, &cnic_dev_list, list) {
 455                 struct cnic_local *cp = dev->cnic_priv;
 456
 457                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 458         }
 459         read_unlock(&cnic_dev_lock);
 460
 461         atomic_set(&ulp_ops->ref_count, 0);
 462         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 463         mutex_unlock(&cnic_lock);
 464
 465         /* Prevent race conditions with netdev_event */
 466         rtnl_lock();
 467         list_for_each_entry(dev, &cnic_dev_list, list) {
 468                 struct cnic_local *cp = dev->cnic_priv;
 469
 470                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 471                         ulp_ops->cnic_init(dev);
 472         }
 473         rtnl_unlock();
 474
 475         return 0;
 476 }
 477
 478 int cnic_unregister_driver(int ulp_type)
 479 {
 480         struct cnic_dev *dev;
 481         struct cnic_ulp_ops *ulp_ops;
 482         int i = 0;
 483
 484         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 485                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 486                 return -EINVAL;
 487         }
 488         mutex_lock(&cnic_lock);
 489         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 490         if (!ulp_ops) {
 491                 pr_err("%s: Type %d has not been registered\n",
 492                        __func__, ulp_type);
 493                 goto out_unlock;
 494         }
 495         read_lock(&cnic_dev_lock);
 496         list_for_each_entry(dev, &cnic_dev_list, list) {
 497                 struct cnic_local *cp = dev->cnic_priv;
 498
 499                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 500                         pr_err("%s: Type %d still has devices registered\n",
 501                                __func__, ulp_type);
 502                         read_unlock(&cnic_dev_lock);
 503                         goto out_unlock;
 504                 }
 505         }
 506         read_unlock(&cnic_dev_lock);
 507
 508         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
 509
 510         mutex_unlock(&cnic_lock);
 511         synchronize_rcu();
 512         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 513                 msleep(100);
 514                 i++;
 515         }
 516
 517         if (atomic_read(&ulp_ops->ref_count) != 0)
 518                 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
 519         return 0;
 520
 521 out_unlock:
 522         mutex_unlock(&cnic_lock);
 523         return -EINVAL;
 524 }
 525
 526 static int cnic_start_hw(struct cnic_dev *);
 527 static void cnic_stop_hw(struct cnic_dev *);
 528
 529 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 530                                 void *ulp_ctx)
 531 {
 532         struct cnic_local *cp = dev->cnic_priv;
 533         struct cnic_ulp_ops *ulp_ops;
 534
 535         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 536                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 537                 return -EINVAL;
 538         }
 539         mutex_lock(&cnic_lock);
 540         if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
 541                 pr_err("%s: Driver with type %d has not been registered\n",
 542                        __func__, ulp_type);
 543                 mutex_unlock(&cnic_lock);
 544                 return -EAGAIN;
 545         }
 546         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 547                 pr_err("%s: Type %d has already been registered to this device\n",
 548                        __func__, ulp_type);
 549                 mutex_unlock(&cnic_lock);
 550                 return -EBUSY;
 551         }
 552
 553         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 554         cp->ulp_handle[ulp_type] = ulp_ctx;
 555         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 556         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 557         cnic_hold(dev);
 558
 559         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 560                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 561                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 562
 563         mutex_unlock(&cnic_lock);
 564
 565         return 0;
 566
 567 }
 568 EXPORT_SYMBOL(cnic_register_driver);
 569
 570 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 571 {
 572         struct cnic_local *cp = dev->cnic_priv;
 573         int i = 0;
 574
 575         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 576                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 577                 return -EINVAL;
 578         }
 579         mutex_lock(&cnic_lock);
 580         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 581                 rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
 582                 cnic_put(dev);
 583         } else {
 584                 pr_err("%s: device not registered to this ulp type %d\n",
 585                        __func__, ulp_type);
 586                 mutex_unlock(&cnic_lock);
 587                 return -EINVAL;
 588         }
 589         mutex_unlock(&cnic_lock);
 590
 591         if (ulp_type == CNIC_ULP_ISCSI)
 592                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 593
 594         synchronize_rcu();
 595
 596         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 597                i < 20) {
 598                 msleep(100);
 599                 i++;
 600         }
 601         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 602                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 603
 604         return 0;
 605 }
 606 EXPORT_SYMBOL(cnic_unregister_driver);
 607
 608 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
 609                             u32 next)
 610 {
 611         id_tbl->start = start_id;
 612         id_tbl->max = size;
 613         id_tbl->next = next;
 614         spin_lock_init(&id_tbl->lock);
 615         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 616         if (!id_tbl->table)
 617                 return -ENOMEM;
 618
 619         return 0;
 620 }
 621
 622 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 623 {
 624         kfree(id_tbl->table);
 625         id_tbl->table = NULL;
 626 }
 627
 628 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 629 {
 630         int ret = -1;
 631
 632         id -= id_tbl->start;
 633         if (id >= id_tbl->max)
 634                 return ret;
 635
 636         spin_lock(&id_tbl->lock);
 637         if (!test_bit(id, id_tbl->table)) {
 638                 set_bit(id, id_tbl->table);
 639                 ret = 0;
 640         }
 641         spin_unlock(&id_tbl->lock);
 642         return ret;
 643 }
 644
 645 /* Returns -1 if not successful */
 646 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 647 {
 648         u32 id;
 649
 650         spin_lock(&id_tbl->lock);
 651         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 652         if (id >= id_tbl->max) {
 653                 id = -1;
 654                 if (id_tbl->next != 0) {
 655                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 656                         if (id >= id_tbl->next)
 657                                 id = -1;
 658                 }
 659         }
 660
 661         if (id < id_tbl->max) {
 662                 set_bit(id, id_tbl->table);
 663                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 664                 id += id_tbl->start;
 665         }
 666
 667         spin_unlock(&id_tbl->lock);
 668
 669         return id;
 670 }
 671
 672 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 673 {
 674         if (id == -1)
 675                 return;
 676
 677         id -= id_tbl->start;
 678         if (id >= id_tbl->max)
 679                 return;
 680
 681         clear_bit(id, id_tbl->table);
 682 }
 683
 684 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 685 {
 686         int i;
 687
 688         if (!dma->pg_arr)
 689                 return;
 690
 691         for (i = 0; i < dma->num_pages; i++) {
 692                 if (dma->pg_arr[i]) {
 693                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
 694                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 695                         dma->pg_arr[i] = NULL;
 696                 }
 697         }
 698         if (dma->pgtbl) {
 699                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 700                                   dma->pgtbl, dma->pgtbl_map);
 701                 dma->pgtbl = NULL;
 702         }
 703         kfree(dma->pg_arr);
 704         dma->pg_arr = NULL;
 705         dma->num_pages = 0;
 706 }
 707
 708 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 709 {
 710         int i;
 711         __le32 *page_table = (__le32 *) dma->pgtbl;
 712
 713         for (i = 0; i < dma->num_pages; i++) {
 714                 /* Each entry needs to be in big endian format. */
 715                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 716                 page_table++;
 717                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 718                 page_table++;
 719         }
 720 }
 721
 722 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 723 {
 724         int i;
 725         __le32 *page_table = (__le32 *) dma->pgtbl;
 726
 727         for (i = 0; i < dma->num_pages; i++) {
 728                 /* Each entry needs to be in little endian format. */
 729                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 730                 page_table++;
 731                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 732                 page_table++;
 733         }
 734 }
 735
 736 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 737                           int pages, int use_pg_tbl)
 738 {
 739         int i, size;
 740         struct cnic_local *cp = dev->cnic_priv;
 741
 742         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 743         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 744         if (dma->pg_arr == NULL)
 745                 return -ENOMEM;
 746
 747         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 748         dma->num_pages = pages;
 749
 750         for (i = 0; i < pages; i++) {
 751                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 752                                                     BCM_PAGE_SIZE,
 753                                                     &dma->pg_map_arr[i],
 754                                                     GFP_ATOMIC);
 755                 if (dma->pg_arr[i] == NULL)
 756                         goto error;
 757         }
 758         if (!use_pg_tbl)
 759                 return 0;
 760
 761         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 762                           ~(BCM_PAGE_SIZE - 1);
 763         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 764                                         &dma->pgtbl_map, GFP_ATOMIC);
 765         if (dma->pgtbl == NULL)
 766                 goto error;
 767
 768         cp->setup_pgtbl(dev, dma);
 769
 770         return 0;
 771
 772 error:
 773         cnic_free_dma(dev, dma);
 774         return -ENOMEM;
 775 }
 776
 777 static void cnic_free_context(struct cnic_dev *dev)
 778 {
 779         struct cnic_local *cp = dev->cnic_priv;
 780         int i;
 781
 782         for (i = 0; i < cp->ctx_blks; i++) {
 783                 if (cp->ctx_arr[i].ctx) {
 784                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 785                                           cp->ctx_arr[i].ctx,
 786                                           cp->ctx_arr[i].mapping);
 787                         cp->ctx_arr[i].ctx = NULL;
 788                 }
 789         }
 790 }
 791
 792 static void __cnic_free_uio(struct cnic_uio_dev *udev)
 793 {
 794         uio_unregister_device(&udev->cnic_uinfo);
 795
 796         if (udev->l2_buf) {
 797                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 798                                   udev->l2_buf, udev->l2_buf_map);
 799                 udev->l2_buf = NULL;
 800         }
 801
 802         if (udev->l2_ring) {
 803                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 804                                   udev->l2_ring, udev->l2_ring_map);
 805                 udev->l2_ring = NULL;
 806         }
 807
 808         pci_dev_put(udev->pdev);
 809         kfree(udev);
 810 }
 811
 812 static void cnic_free_uio(struct cnic_uio_dev *udev)
 813 {
 814         if (!udev)
 815                 return;
 816
 817         write_lock(&cnic_dev_lock);
 818         list_del_init(&udev->list);
 819         write_unlock(&cnic_dev_lock);
 820         __cnic_free_uio(udev);
 821 }
 822
 823 static void cnic_free_resc(struct cnic_dev *dev)
 824 {
 825         struct cnic_local *cp = dev->cnic_priv;
 826         struct cnic_uio_dev *udev = cp->udev;
 827
 828         if (udev) {
 829                 udev->dev = NULL;
 830                 cp->udev = NULL;
 831         }
 832
 833         cnic_free_context(dev);
 834         kfree(cp->ctx_arr);
 835         cp->ctx_arr = NULL;
 836         cp->ctx_blks = 0;
 837
 838         cnic_free_dma(dev, &cp->gbl_buf_info);
 839         cnic_free_dma(dev, &cp->conn_buf_info);
 840         cnic_free_dma(dev, &cp->kwq_info);
 841         cnic_free_dma(dev, &cp->kwq_16_data_info);
 842         cnic_free_dma(dev, &cp->kcq2.dma);
 843         cnic_free_dma(dev, &cp->kcq1.dma);
 844         kfree(cp->iscsi_tbl);
 845         cp->iscsi_tbl = NULL;
 846         kfree(cp->ctx_tbl);
 847         cp->ctx_tbl = NULL;
 848
 849         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
 850         cnic_free_id_tbl(&cp->cid_tbl);
 851 }
 852
 853 static int cnic_alloc_context(struct cnic_dev *dev)
 854 {
 855         struct cnic_local *cp = dev->cnic_priv;
 856
 857         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 858                 int i, k, arr_size;
 859
 860                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 861                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 862                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 863                            sizeof(struct cnic_ctx);
 864                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 865                 if (cp->ctx_arr == NULL)
 866                         return -ENOMEM;
 867
 868                 k = 0;
 869                 for (i = 0; i < 2; i++) {
 870                         u32 j, reg, off, lo, hi;
 871
 872                         if (i == 0)
 873                                 off = BNX2_PG_CTX_MAP;
 874                         else
 875                                 off = BNX2_ISCSI_CTX_MAP;
 876
 877                         reg = cnic_reg_rd_ind(dev, off);
 878                         lo = reg >> 16;
 879                         hi = reg & 0xffff;
 880                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 881                                 cp->ctx_arr[k].cid = j;
 882                 }
 883
 884                 cp->ctx_blks = k;
 885                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 886                         cp->ctx_blks = 0;
 887                         return -ENOMEM;
 888                 }
 889
 890                 for (i = 0; i < cp->ctx_blks; i++) {
 891                         cp->ctx_arr[i].ctx =
 892                                 dma_alloc_coherent(&dev->pcidev->dev,
 893                                                    BCM_PAGE_SIZE,
 894                                                    &cp->ctx_arr[i].mapping,
 895                                                    GFP_KERNEL);
 896                         if (cp->ctx_arr[i].ctx == NULL)
 897                                 return -ENOMEM;
 898                 }
 899         }
 900         return 0;
 901 }
 902
 903 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info)
 904 {
 905         int err, i, is_bnx2 = 0;
 906         struct kcqe **kcq;
 907
 908         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags))
 909                 is_bnx2 = 1;
 910
 911         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, is_bnx2);
 912         if (err)
 913                 return err;
 914
 915         kcq = (struct kcqe **) info->dma.pg_arr;
 916         info->kcq = kcq;
 917
 918         if (is_bnx2)
 919                 return 0;
 920
 921         for (i = 0; i < KCQ_PAGE_CNT; i++) {
 922                 struct bnx2x_bd_chain_next *next =
 923                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
 924                 int j = i + 1;
 925
 926                 if (j >= KCQ_PAGE_CNT)
 927                         j = 0;
 928                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
 929                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
 930         }
 931         return 0;
 932 }
 933
 934 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
 935 {
 936         struct cnic_local *cp = dev->cnic_priv;
 937         struct cnic_uio_dev *udev;
 938
 939         read_lock(&cnic_dev_lock);
 940         list_for_each_entry(udev, &cnic_udev_list, list) {
 941                 if (udev->pdev == dev->pcidev) {
 942                         udev->dev = dev;
 943                         cp->udev = udev;
 944                         read_unlock(&cnic_dev_lock);
 945                         return 0;
 946                 }
 947         }
 948         read_unlock(&cnic_dev_lock);
 949
 950         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
 951         if (!udev)
 952                 return -ENOMEM;
 953
 954         udev->uio_dev = -1;
 955
 956         udev->dev = dev;
 957         udev->pdev = dev->pcidev;
 958         udev->l2_ring_size = pages * BCM_PAGE_SIZE;
 959         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
 960                                            &udev->l2_ring_map,
 961                                            GFP_KERNEL | __GFP_COMP);
 962         if (!udev->l2_ring)
 963                 goto err_udev;
 964
 965         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
 966         udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
 967         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
 968                                           &udev->l2_buf_map,
 969                                           GFP_KERNEL | __GFP_COMP);
 970         if (!udev->l2_buf)
 971                 goto err_dma;
 972
 973         write_lock(&cnic_dev_lock);
 974         list_add(&udev->list, &cnic_udev_list);
 975         write_unlock(&cnic_dev_lock);
 976
 977         pci_dev_get(udev->pdev);
 978
 979         cp->udev = udev;
 980
 981         return 0;
 982  err_dma:
 983         dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 984                           udev->l2_ring, udev->l2_ring_map);
 985  err_udev:
 986         kfree(udev);
 987         return -ENOMEM;
 988 }
 989
 990 static int cnic_init_uio(struct cnic_dev *dev)
 991 {
 992         struct cnic_local *cp = dev->cnic_priv;
 993         struct cnic_uio_dev *udev = cp->udev;
 994         struct uio_info *uinfo;
 995         int ret = 0;
 996
 997         if (!udev)
 998                 return -ENOMEM;
 999
1000         uinfo = &udev->cnic_uinfo;
1001
1002         uinfo->mem[0].addr = dev->netdev->base_addr;
1003         uinfo->mem[0].internal_addr = dev->regview;
1004         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
1005         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1006
1007         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1008                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1009                                         PAGE_MASK;
1010                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1011                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1012                 else
1013                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1014
1015                 uinfo->name = "bnx2_cnic";
1016         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1017                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1018                         PAGE_MASK;
1019                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1020
1021                 uinfo->name = "bnx2x_cnic";
1022         }
1023
1024         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1025
1026         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1027         uinfo->mem[2].size = udev->l2_ring_size;
1028         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1029
1030         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1031         uinfo->mem[3].size = udev->l2_buf_size;
1032         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1033
1034         uinfo->version = CNIC_MODULE_VERSION;
1035         uinfo->irq = UIO_IRQ_CUSTOM;
1036
1037         uinfo->open = cnic_uio_open;
1038         uinfo->release = cnic_uio_close;
1039
1040         if (udev->uio_dev == -1) {
1041                 if (!uinfo->priv) {
1042                         uinfo->priv = udev;
1043
1044                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1045                 }
1046         } else {
1047                 cnic_init_rings(dev);
1048         }
1049
1050         return ret;
1051 }
1052
1053 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1054 {
1055         struct cnic_local *cp = dev->cnic_priv;
1056         int ret;
1057
1058         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1059         if (ret)
1060                 goto error;
1061         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1062
1063         ret = cnic_alloc_kcq(dev, &cp->kcq1);
1064         if (ret)
1065                 goto error;
1066
1067         ret = cnic_alloc_context(dev);
1068         if (ret)
1069                 goto error;
1070
1071         ret = cnic_alloc_uio_rings(dev, 2);
1072         if (ret)
1073                 goto error;
1074
1075         ret = cnic_init_uio(dev);
1076         if (ret)
1077                 goto error;
1078
1079         return 0;
1080
1081 error:
1082         cnic_free_resc(dev);
1083         return ret;
1084 }
1085
1086 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1087 {
1088         struct cnic_local *cp = dev->cnic_priv;
1089         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1090         int total_mem, blks, i;
1091
1092         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1093         blks = total_mem / ctx_blk_size;
1094         if (total_mem % ctx_blk_size)
1095                 blks++;
1096
1097         if (blks > cp->ethdev->ctx_tbl_len)
1098                 return -ENOMEM;
1099
1100         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1101         if (cp->ctx_arr == NULL)
1102                 return -ENOMEM;
1103
1104         cp->ctx_blks = blks;
1105         cp->ctx_blk_size = ctx_blk_size;
1106         if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1107                 cp->ctx_align = 0;
1108         else
1109                 cp->ctx_align = ctx_blk_size;
1110
1111         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1112
1113         for (i = 0; i < blks; i++) {
1114                 cp->ctx_arr[i].ctx =
1115                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1116                                            &cp->ctx_arr[i].mapping,
1117                                            GFP_KERNEL);
1118                 if (cp->ctx_arr[i].ctx == NULL)
1119                         return -ENOMEM;
1120
1121                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1122                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1123                                 cnic_free_context(dev);
1124                                 cp->ctx_blk_size += cp->ctx_align;
1125                                 i = -1;
1126                                 continue;
1127                         }
1128                 }
1129         }
1130         return 0;
1131 }
1132
1133 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1134 {
1135         struct cnic_local *cp = dev->cnic_priv;
1136         struct cnic_eth_dev *ethdev = cp->ethdev;
1137         u32 start_cid = ethdev->starting_cid;
1138         int i, j, n, ret, pages;
1139         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1140
1141         cp->iro_arr = ethdev->iro_arr;
1142
1143         cp->max_cid_space = MAX_ISCSI_TBL_SZ + BNX2X_FCOE_NUM_CONNECTIONS;
1144         cp->iscsi_start_cid = start_cid;
1145         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1146
1147         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
1148                 cp->max_cid_space += BNX2X_FCOE_NUM_CONNECTIONS;
1149                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1150                 if (!cp->fcoe_init_cid)
1151                         cp->fcoe_init_cid = 0x10;
1152         }
1153
1154         if (start_cid < BNX2X_ISCSI_START_CID) {
1155                 u32 delta = BNX2X_ISCSI_START_CID - start_cid;
1156
1157                 cp->iscsi_start_cid = BNX2X_ISCSI_START_CID;
1158                 cp->fcoe_start_cid += delta;
1159                 cp->max_cid_space += delta;
1160         }
1161
1162         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1163                                 GFP_KERNEL);
1164         if (!cp->iscsi_tbl)
1165                 goto error;
1166
1167         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1168                                 cp->max_cid_space, GFP_KERNEL);
1169         if (!cp->ctx_tbl)
1170                 goto error;
1171
1172         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1173                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1174                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1175         }
1176
1177         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1178                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1179
1180         pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1181                 PAGE_SIZE;
1182
1183         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1184         if (ret)
1185                 return -ENOMEM;
1186
1187         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1188         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1189                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1190
1191                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1192                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1193                                                    off;
1194
1195                 if ((i % n) == (n - 1))
1196                         j++;
1197         }
1198
1199         ret = cnic_alloc_kcq(dev, &cp->kcq1);
1200         if (ret)
1201                 goto error;
1202
1203         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
1204                 ret = cnic_alloc_kcq(dev, &cp->kcq2);
1205                 if (ret)
1206                         goto error;
1207         }
1208
1209         pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
1210                            BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
1211         ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
1212         if (ret)
1213                 goto error;
1214
1215         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1216         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1217         if (ret)
1218                 goto error;
1219
1220         ret = cnic_alloc_bnx2x_context(dev);
1221         if (ret)
1222                 goto error;
1223
1224         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1225
1226         cp->l2_rx_ring_size = 15;
1227
1228         ret = cnic_alloc_uio_rings(dev, 4);
1229         if (ret)
1230                 goto error;
1231
1232         ret = cnic_init_uio(dev);
1233         if (ret)
1234                 goto error;
1235
1236         return 0;
1237
1238 error:
1239         cnic_free_resc(dev);
1240         return -ENOMEM;
1241 }
1242
1243 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1244 {
1245         return cp->max_kwq_idx -
1246                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1247 }
1248
1249 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1250                                   u32 num_wqes)
1251 {
1252         struct cnic_local *cp = dev->cnic_priv;
1253         struct kwqe *prod_qe;
1254         u16 prod, sw_prod, i;
1255
1256         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1257                 return -EAGAIN;         /* bnx2 is down */
1258
1259         spin_lock_bh(&cp->cnic_ulp_lock);
1260         if (num_wqes > cnic_kwq_avail(cp) &&
1261             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1262                 spin_unlock_bh(&cp->cnic_ulp_lock);
1263                 return -EAGAIN;
1264         }
1265
1266         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1267
1268         prod = cp->kwq_prod_idx;
1269         sw_prod = prod & MAX_KWQ_IDX;
1270         for (i = 0; i < num_wqes; i++) {
1271                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1272                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1273                 prod++;
1274                 sw_prod = prod & MAX_KWQ_IDX;
1275         }
1276         cp->kwq_prod_idx = prod;
1277
1278         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1279
1280         spin_unlock_bh(&cp->cnic_ulp_lock);
1281         return 0;
1282 }
1283
1284 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1285                                    union l5cm_specific_data *l5_data)
1286 {
1287         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1288         dma_addr_t map;
1289
1290         map = ctx->kwqe_data_mapping;
1291         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1292         l5_data->phy_address.hi = (u64) map >> 32;
1293         return ctx->kwqe_data;
1294 }
1295
1296 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1297                                 u32 type, union l5cm_specific_data *l5_data)
1298 {
1299         struct cnic_local *cp = dev->cnic_priv;
1300         struct l5cm_spe kwqe;
1301         struct kwqe_16 *kwq[1];
1302         u16 type_16;
1303         int ret;
1304
1305         kwqe.hdr.conn_and_cmd_data =
1306                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1307                              BNX2X_HW_CID(cp, cid)));
1308
1309         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1310         type_16 |= (cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1311                    SPE_HDR_FUNCTION_ID;
1312
1313         kwqe.hdr.type = cpu_to_le16(type_16);
1314         kwqe.hdr.reserved1 = 0;
1315         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1316         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1317
1318         kwq[0] = (struct kwqe_16 *) &kwqe;
1319
1320         spin_lock_bh(&cp->cnic_ulp_lock);
1321         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1322         spin_unlock_bh(&cp->cnic_ulp_lock);
1323
1324         if (ret == 1)
1325                 return 0;
1326
1327         return -EBUSY;
1328 }
1329
1330 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1331                                    struct kcqe *cqes[], u32 num_cqes)
1332 {
1333         struct cnic_local *cp = dev->cnic_priv;
1334         struct cnic_ulp_ops *ulp_ops;
1335
1336         rcu_read_lock();
1337         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1338         if (likely(ulp_ops)) {
1339                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1340                                           cqes, num_cqes);
1341         }
1342         rcu_read_unlock();
1343 }
1344
1345 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1346 {
1347         struct cnic_local *cp = dev->cnic_priv;
1348         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1349         int hq_bds, pages;
1350         u32 pfid = cp->pfid;
1351
1352         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1353         cp->num_ccells = req1->num_ccells_per_conn;
1354         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1355                               cp->num_iscsi_tasks;
1356         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1357                         BNX2X_ISCSI_R2TQE_SIZE;
1358         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1359         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1360         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1361         cp->num_cqs = req1->num_cqs;
1362
1363         if (!dev->max_iscsi_conn)
1364                 return 0;
1365
1366         /* init Tstorm RAM */
1367         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1368                   req1->rq_num_wqes);
1369         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1370                   PAGE_SIZE);
1371         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1372                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1373         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1374                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1375                   req1->num_tasks_per_conn);
1376
1377         /* init Ustorm RAM */
1378         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1379                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1380                   req1->rq_buffer_size);
1381         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1382                   PAGE_SIZE);
1383         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1384                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1385         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1386                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1387                   req1->num_tasks_per_conn);
1388         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1389                   req1->rq_num_wqes);
1390         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1391                   req1->cq_num_wqes);
1392         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1393                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1394
1395         /* init Xstorm RAM */
1396         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1397                   PAGE_SIZE);
1398         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1399                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1400         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1401                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1402                   req1->num_tasks_per_conn);
1403         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1404                   hq_bds);
1405         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1406                   req1->num_tasks_per_conn);
1407         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1408                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1409
1410         /* init Cstorm RAM */
1411         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1412                   PAGE_SIZE);
1413         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1414                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1415         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1416                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1417                   req1->num_tasks_per_conn);
1418         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1419                   req1->cq_num_wqes);
1420         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1421                   hq_bds);
1422
1423         return 0;
1424 }
1425
1426 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1427 {
1428         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1429         struct cnic_local *cp = dev->cnic_priv;
1430         u32 pfid = cp->pfid;
1431         struct iscsi_kcqe kcqe;
1432         struct kcqe *cqes[1];
1433
1434         memset(&kcqe, 0, sizeof(kcqe));
1435         if (!dev->max_iscsi_conn) {
1436                 kcqe.completion_status =
1437                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1438                 goto done;
1439         }
1440
1441         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1442                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1443         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1444                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1445                 req2->error_bit_map[1]);
1446
1447         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1448                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1449         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1450                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1451         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1452                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1453                 req2->error_bit_map[1]);
1454
1455         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1456                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1457
1458         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1459
1460 done:
1461         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1462         cqes[0] = (struct kcqe *) &kcqe;
1463         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1464
1465         return 0;
1466 }
1467
1468 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1469 {
1470         struct cnic_local *cp = dev->cnic_priv;
1471         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1472
1473         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1474                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1475
1476                 cnic_free_dma(dev, &iscsi->hq_info);
1477                 cnic_free_dma(dev, &iscsi->r2tq_info);
1478                 cnic_free_dma(dev, &iscsi->task_array_info);
1479                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1480         } else {
1481                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1482         }
1483
1484         ctx->cid = 0;
1485 }
1486
1487 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1488 {
1489         u32 cid;
1490         int ret, pages;
1491         struct cnic_local *cp = dev->cnic_priv;
1492         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1493         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1494
1495         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1496                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1497                 if (cid == -1) {
1498                         ret = -ENOMEM;
1499                         goto error;
1500                 }
1501                 ctx->cid = cid;
1502                 return 0;
1503         }
1504
1505         cid = cnic_alloc_new_id(&cp->cid_tbl);
1506         if (cid == -1) {
1507                 ret = -ENOMEM;
1508                 goto error;
1509         }
1510
1511         ctx->cid = cid;
1512         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1513
1514         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1515         if (ret)
1516                 goto error;
1517
1518         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1519         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1520         if (ret)
1521                 goto error;
1522
1523         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1524         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1525         if (ret)
1526                 goto error;
1527
1528         return 0;
1529
1530 error:
1531         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1532         return ret;
1533 }
1534
1535 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1536                                 struct regpair *ctx_addr)
1537 {
1538         struct cnic_local *cp = dev->cnic_priv;
1539         struct cnic_eth_dev *ethdev = cp->ethdev;
1540         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1541         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1542         unsigned long align_off = 0;
1543         dma_addr_t ctx_map;
1544         void *ctx;
1545
1546         if (cp->ctx_align) {
1547                 unsigned long mask = cp->ctx_align - 1;
1548
1549                 if (cp->ctx_arr[blk].mapping & mask)
1550                         align_off = cp->ctx_align -
1551                                     (cp->ctx_arr[blk].mapping & mask);
1552         }
1553         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1554                 (off * BNX2X_CONTEXT_MEM_SIZE);
1555         ctx = cp->ctx_arr[blk].ctx + align_off +
1556               (off * BNX2X_CONTEXT_MEM_SIZE);
1557         if (init)
1558                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1559
1560         ctx_addr->lo = ctx_map & 0xffffffff;
1561         ctx_addr->hi = (u64) ctx_map >> 32;
1562         return ctx;
1563 }
1564
1565 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1566                                 u32 num)
1567 {
1568         struct cnic_local *cp = dev->cnic_priv;
1569         struct iscsi_kwqe_conn_offload1 *req1 =
1570                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1571         struct iscsi_kwqe_conn_offload2 *req2 =
1572                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1573         struct iscsi_kwqe_conn_offload3 *req3;
1574         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1575         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1576         u32 cid = ctx->cid;
1577         u32 hw_cid = BNX2X_HW_CID(cp, cid);
1578         struct iscsi_context *ictx;
1579         struct regpair context_addr;
1580         int i, j, n = 2, n_max;
1581
1582         ctx->ctx_flags = 0;
1583         if (!req2->num_additional_wqes)
1584                 return -EINVAL;
1585
1586         n_max = req2->num_additional_wqes + 2;
1587
1588         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1589         if (ictx == NULL)
1590                 return -ENOMEM;
1591
1592         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1593
1594         ictx->xstorm_ag_context.hq_prod = 1;
1595
1596         ictx->xstorm_st_context.iscsi.first_burst_length =
1597                 ISCSI_DEF_FIRST_BURST_LEN;
1598         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1599                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1600         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1601                 req1->sq_page_table_addr_lo;
1602         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1603                 req1->sq_page_table_addr_hi;
1604         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1605         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1606         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1607                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1608         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1609                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1610         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1611                 iscsi->hq_info.pgtbl[0];
1612         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1613                 iscsi->hq_info.pgtbl[1];
1614         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1615                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1616         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1617                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1618         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1619                 iscsi->r2tq_info.pgtbl[0];
1620         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1621                 iscsi->r2tq_info.pgtbl[1];
1622         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1623                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1624         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1625                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1626         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1627                 BNX2X_ISCSI_PBL_NOT_CACHED;
1628         ictx->xstorm_st_context.iscsi.flags.flags |=
1629                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1630         ictx->xstorm_st_context.iscsi.flags.flags |=
1631                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1632
1633         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1634         /* TSTORM requires the base address of RQ DB & not PTE */
1635         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1636                 req2->rq_page_table_addr_lo & PAGE_MASK;
1637         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1638                 req2->rq_page_table_addr_hi;
1639         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1640         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1641         ictx->tstorm_st_context.tcp.flags2 |=
1642                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1643         ictx->tstorm_st_context.tcp.ooo_support_mode =
1644                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1645
1646         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1647
1648         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1649                 req2->rq_page_table_addr_lo;
1650         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1651                 req2->rq_page_table_addr_hi;
1652         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1653         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1654         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1655                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1656         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1657                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1658         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1659                 iscsi->r2tq_info.pgtbl[0];
1660         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1661                 iscsi->r2tq_info.pgtbl[1];
1662         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1663                 req1->cq_page_table_addr_lo;
1664         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1665                 req1->cq_page_table_addr_hi;
1666         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1667         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1668         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1669         ictx->ustorm_st_context.task_pbe_cache_index =
1670                 BNX2X_ISCSI_PBL_NOT_CACHED;
1671         ictx->ustorm_st_context.task_pdu_cache_index =
1672                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1673
1674         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1675                 if (j == 3) {
1676                         if (n >= n_max)
1677                                 break;
1678                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1679                         j = 0;
1680                 }
1681                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1682                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1683                         req3->qp_first_pte[j].hi;
1684                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1685                         req3->qp_first_pte[j].lo;
1686         }
1687
1688         ictx->ustorm_st_context.task_pbl_base.lo =
1689                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1690         ictx->ustorm_st_context.task_pbl_base.hi =
1691                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1692         ictx->ustorm_st_context.tce_phy_addr.lo =
1693                 iscsi->task_array_info.pgtbl[0];
1694         ictx->ustorm_st_context.tce_phy_addr.hi =
1695                 iscsi->task_array_info.pgtbl[1];
1696         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1697         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1698         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1699         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1700                 ISCSI_DEF_MAX_BURST_LEN;
1701         ictx->ustorm_st_context.negotiated_rx |=
1702                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1703                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1704
1705         ictx->cstorm_st_context.hq_pbl_base.lo =
1706                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1707         ictx->cstorm_st_context.hq_pbl_base.hi =
1708                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1709         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1710         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1711         ictx->cstorm_st_context.task_pbl_base.lo =
1712                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1713         ictx->cstorm_st_context.task_pbl_base.hi =
1714                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1715         /* CSTORM and USTORM initialization is different, CSTORM requires
1716          * CQ DB base & not PTE addr */
1717         ictx->cstorm_st_context.cq_db_base.lo =
1718                 req1->cq_page_table_addr_lo & PAGE_MASK;
1719         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1720         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1721         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1722         for (i = 0; i < cp->num_cqs; i++) {
1723                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1724                         ISCSI_INITIAL_SN;
1725                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1726                         ISCSI_INITIAL_SN;
1727         }
1728
1729         ictx->xstorm_ag_context.cdu_reserved =
1730                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1731                                        ISCSI_CONNECTION_TYPE);
1732         ictx->ustorm_ag_context.cdu_usage =
1733                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1734                                        ISCSI_CONNECTION_TYPE);
1735         return 0;
1736
1737 }
1738
1739 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1740                                    u32 num, int *work)
1741 {
1742         struct iscsi_kwqe_conn_offload1 *req1;
1743         struct iscsi_kwqe_conn_offload2 *req2;
1744         struct cnic_local *cp = dev->cnic_priv;
1745         struct cnic_context *ctx;
1746         struct iscsi_kcqe kcqe;
1747         struct kcqe *cqes[1];
1748         u32 l5_cid;
1749         int ret = 0;
1750
1751         if (num < 2) {
1752                 *work = num;
1753                 return -EINVAL;
1754         }
1755
1756         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1757         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1758         if ((num - 2) < req2->num_additional_wqes) {
1759                 *work = num;
1760                 return -EINVAL;
1761         }
1762         *work = 2 + req2->num_additional_wqes;
1763
1764         l5_cid = req1->iscsi_conn_id;
1765         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1766                 return -EINVAL;
1767
1768         memset(&kcqe, 0, sizeof(kcqe));
1769         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1770         kcqe.iscsi_conn_id = l5_cid;
1771         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1772
1773         ctx = &cp->ctx_tbl[l5_cid];
1774         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1775                 kcqe.completion_status =
1776                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1777                 goto done;
1778         }
1779
1780         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1781                 atomic_dec(&cp->iscsi_conn);
1782                 goto done;
1783         }
1784         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1785         if (ret) {
1786                 atomic_dec(&cp->iscsi_conn);
1787                 ret = 0;
1788                 goto done;
1789         }
1790         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1791         if (ret < 0) {
1792                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1793                 atomic_dec(&cp->iscsi_conn);
1794                 goto done;
1795         }
1796
1797         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1798         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1799
1800 done:
1801         cqes[0] = (struct kcqe *) &kcqe;
1802         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1803         return ret;
1804 }
1805
1806
1807 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1808 {
1809         struct cnic_local *cp = dev->cnic_priv;
1810         struct iscsi_kwqe_conn_update *req =
1811                 (struct iscsi_kwqe_conn_update *) kwqe;
1812         void *data;
1813         union l5cm_specific_data l5_data;
1814         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1815         int ret;
1816
1817         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1818                 return -EINVAL;
1819
1820         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1821         if (!data)
1822                 return -ENOMEM;
1823
1824         memcpy(data, kwqe, sizeof(struct kwqe));
1825
1826         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1827                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1828         return ret;
1829 }
1830
1831 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1832 {
1833         struct cnic_local *cp = dev->cnic_priv;
1834         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1835         union l5cm_specific_data l5_data;
1836         int ret;
1837         u32 hw_cid;
1838
1839         init_waitqueue_head(&ctx->waitq);
1840         ctx->wait_cond = 0;
1841         memset(&l5_data, 0, sizeof(l5_data));
1842         hw_cid = BNX2X_HW_CID(cp, ctx->cid);
1843
1844         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1845                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1846
1847         if (ret == 0)
1848                 wait_event(ctx->waitq, ctx->wait_cond);
1849
1850         return ret;
1851 }
1852
1853 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1854 {
1855         struct cnic_local *cp = dev->cnic_priv;
1856         struct iscsi_kwqe_conn_destroy *req =
1857                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1858         u32 l5_cid = req->reserved0;
1859         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1860         int ret = 0;
1861         struct iscsi_kcqe kcqe;
1862         struct kcqe *cqes[1];
1863
1864         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1865                 goto skip_cfc_delete;
1866
1867         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
1868                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
1869
1870                 if (delta > (2 * HZ))
1871                         delta = 0;
1872
1873                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
1874                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
1875                 goto destroy_reply;
1876         }
1877
1878         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
1879
1880 skip_cfc_delete:
1881         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1882
1883         atomic_dec(&cp->iscsi_conn);
1884         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1885
1886 destroy_reply:
1887         memset(&kcqe, 0, sizeof(kcqe));
1888         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1889         kcqe.iscsi_conn_id = l5_cid;
1890         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1891         kcqe.iscsi_conn_context_id = req->context_id;
1892
1893         cqes[0] = (struct kcqe *) &kcqe;
1894         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1895
1896         return ret;
1897 }
1898
1899 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1900                                       struct l4_kwq_connect_req1 *kwqe1,
1901                                       struct l4_kwq_connect_req3 *kwqe3,
1902                                       struct l5cm_active_conn_buffer *conn_buf)
1903 {
1904         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1905         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1906                 &conn_buf->xstorm_conn_buffer;
1907         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1908                 &conn_buf->tstorm_conn_buffer;
1909         struct regpair context_addr;
1910         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1911         struct in6_addr src_ip, dst_ip;
1912         int i;
1913         u32 *addrp;
1914
1915         addrp = (u32 *) &conn_addr->local_ip_addr;
1916         for (i = 0; i < 4; i++, addrp++)
1917                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1918
1919         addrp = (u32 *) &conn_addr->remote_ip_addr;
1920         for (i = 0; i < 4; i++, addrp++)
1921                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1922
1923         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1924
1925         xstorm_buf->context_addr.hi = context_addr.hi;
1926         xstorm_buf->context_addr.lo = context_addr.lo;
1927         xstorm_buf->mss = 0xffff;
1928         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1929         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1930                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1931         xstorm_buf->pseudo_header_checksum =
1932                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1933
1934         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1935                 tstorm_buf->params |=
1936                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1937         if (kwqe3->ka_timeout) {
1938                 tstorm_buf->ka_enable = 1;
1939                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1940                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1941                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1942         }
1943         tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1944         tstorm_buf->snd_buf = kwqe3->snd_buf;
1945         tstorm_buf->max_rt_time = 0xffffffff;
1946 }
1947
1948 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1949 {
1950         struct cnic_local *cp = dev->cnic_priv;
1951         u32 pfid = cp->pfid;
1952         u8 *mac = dev->mac_addr;
1953
1954         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1955                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
1956         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1957                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
1958         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1959                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
1960         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1961                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
1962         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1963                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
1964         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1965                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
1966
1967         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1968                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
1969         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1970                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1971                  mac[4]);
1972         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1973                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
1974         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1975                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1976                  mac[2]);
1977         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1978                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 2,
1979                  mac[1]);
1980         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1981                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 3,
1982                  mac[0]);
1983 }
1984
1985 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1986 {
1987         struct cnic_local *cp = dev->cnic_priv;
1988         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1989         u16 tstorm_flags = 0;
1990
1991         if (tcp_ts) {
1992                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1993                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1994         }
1995
1996         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1997                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
1998
1999         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
2000                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
2001 }
2002
2003 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2004                               u32 num, int *work)
2005 {
2006         struct cnic_local *cp = dev->cnic_priv;
2007         struct l4_kwq_connect_req1 *kwqe1 =
2008                 (struct l4_kwq_connect_req1 *) wqes[0];
2009         struct l4_kwq_connect_req3 *kwqe3;
2010         struct l5cm_active_conn_buffer *conn_buf;
2011         struct l5cm_conn_addr_params *conn_addr;
2012         union l5cm_specific_data l5_data;
2013         u32 l5_cid = kwqe1->pg_cid;
2014         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2015         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2016         int ret;
2017
2018         if (num < 2) {
2019                 *work = num;
2020                 return -EINVAL;
2021         }
2022
2023         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2024                 *work = 3;
2025         else
2026                 *work = 2;
2027
2028         if (num < *work) {
2029                 *work = num;
2030                 return -EINVAL;
2031         }
2032
2033         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2034                 netdev_err(dev->netdev, "conn_buf size too big\n");
2035                 return -ENOMEM;
2036         }
2037         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2038         if (!conn_buf)
2039                 return -ENOMEM;
2040
2041         memset(conn_buf, 0, sizeof(*conn_buf));
2042
2043         conn_addr = &conn_buf->conn_addr_buf;
2044         conn_addr->remote_addr_0 = csk->ha[0];
2045         conn_addr->remote_addr_1 = csk->ha[1];
2046         conn_addr->remote_addr_2 = csk->ha[2];
2047         conn_addr->remote_addr_3 = csk->ha[3];
2048         conn_addr->remote_addr_4 = csk->ha[4];
2049         conn_addr->remote_addr_5 = csk->ha[5];
2050
2051         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2052                 struct l4_kwq_connect_req2 *kwqe2 =
2053                         (struct l4_kwq_connect_req2 *) wqes[1];
2054
2055                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2056                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2057                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2058
2059                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2060                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2061                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2062                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2063         }
2064         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2065
2066         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2067         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2068         conn_addr->local_tcp_port = kwqe1->src_port;
2069         conn_addr->remote_tcp_port = kwqe1->dst_port;
2070
2071         conn_addr->pmtu = kwqe3->pmtu;
2072         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2073
2074         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2075                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2076
2077         cnic_bnx2x_set_tcp_timestamp(dev,
2078                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
2079
2080         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2081                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2082         if (!ret)
2083                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2084
2085         return ret;
2086 }
2087
2088 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2089 {
2090         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2091         union l5cm_specific_data l5_data;
2092         int ret;
2093
2094         memset(&l5_data, 0, sizeof(l5_data));
2095         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2096                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2097         return ret;
2098 }
2099
2100 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2101 {
2102         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2103         union l5cm_specific_data l5_data;
2104         int ret;
2105
2106         memset(&l5_data, 0, sizeof(l5_data));
2107         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2108                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2109         return ret;
2110 }
2111 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2112 {
2113         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2114         struct l4_kcq kcqe;
2115         struct kcqe *cqes[1];
2116
2117         memset(&kcqe, 0, sizeof(kcqe));
2118         kcqe.pg_host_opaque = req->host_opaque;
2119         kcqe.pg_cid = req->host_opaque;
2120         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2121         cqes[0] = (struct kcqe *) &kcqe;
2122         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2123         return 0;
2124 }
2125
2126 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2127 {
2128         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2129         struct l4_kcq kcqe;
2130         struct kcqe *cqes[1];
2131
2132         memset(&kcqe, 0, sizeof(kcqe));
2133         kcqe.pg_host_opaque = req->pg_host_opaque;
2134         kcqe.pg_cid = req->pg_cid;
2135         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2136         cqes[0] = (struct kcqe *) &kcqe;
2137         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2138         return 0;
2139 }
2140
2141 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2142 {
2143         struct fcoe_kwqe_stat *req;
2144         struct fcoe_stat_ramrod_params *fcoe_stat;
2145         union l5cm_specific_data l5_data;
2146         struct cnic_local *cp = dev->cnic_priv;
2147         int ret;
2148         u32 cid;
2149
2150         req = (struct fcoe_kwqe_stat *) kwqe;
2151         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2152
2153         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2154         if (!fcoe_stat)
2155                 return -ENOMEM;
2156
2157         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2158         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2159
2160         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT, cid,
2161                                   FCOE_CONNECTION_TYPE, &l5_data);
2162         return ret;
2163 }
2164
2165 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2166                                  u32 num, int *work)
2167 {
2168         int ret;
2169         struct cnic_local *cp = dev->cnic_priv;
2170         u32 cid;
2171         struct fcoe_init_ramrod_params *fcoe_init;
2172         struct fcoe_kwqe_init1 *req1;
2173         struct fcoe_kwqe_init2 *req2;
2174         struct fcoe_kwqe_init3 *req3;
2175         union l5cm_specific_data l5_data;
2176
2177         if (num < 3) {
2178                 *work = num;
2179                 return -EINVAL;
2180         }
2181         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2182         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2183         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2184         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2185                 *work = 1;
2186                 return -EINVAL;
2187         }
2188         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2189                 *work = 2;
2190                 return -EINVAL;
2191         }
2192
2193         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2194                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2195                 return -ENOMEM;
2196         }
2197         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2198         if (!fcoe_init)
2199                 return -ENOMEM;
2200
2201         memset(fcoe_init, 0, sizeof(*fcoe_init));
2202         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2203         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2204         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2205         fcoe_init->eq_addr.lo = cp->kcq2.dma.pg_map_arr[0] & 0xffffffff;
2206         fcoe_init->eq_addr.hi = (u64) cp->kcq2.dma.pg_map_arr[0] >> 32;
2207         fcoe_init->eq_next_page_addr.lo =
2208                 cp->kcq2.dma.pg_map_arr[1] & 0xffffffff;
2209         fcoe_init->eq_next_page_addr.hi =
2210                 (u64) cp->kcq2.dma.pg_map_arr[1] >> 32;
2211
2212         fcoe_init->sb_num = cp->status_blk_num;
2213         fcoe_init->eq_prod = MAX_KCQ_IDX;
2214         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2215         cp->kcq2.sw_prod_idx = 0;
2216
2217         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2218         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT, cid,
2219                                   FCOE_CONNECTION_TYPE, &l5_data);
2220         *work = 3;
2221         return ret;
2222 }
2223
2224 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2225                                  u32 num, int *work)
2226 {
2227         int ret = 0;
2228         u32 cid = -1, l5_cid;
2229         struct cnic_local *cp = dev->cnic_priv;
2230         struct fcoe_kwqe_conn_offload1 *req1;
2231         struct fcoe_kwqe_conn_offload2 *req2;
2232         struct fcoe_kwqe_conn_offload3 *req3;
2233         struct fcoe_kwqe_conn_offload4 *req4;
2234         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2235         struct cnic_context *ctx;
2236         struct fcoe_context *fctx;
2237         struct regpair ctx_addr;
2238         union l5cm_specific_data l5_data;
2239         struct fcoe_kcqe kcqe;
2240         struct kcqe *cqes[1];
2241
2242         if (num < 4) {
2243                 *work = num;
2244                 return -EINVAL;
2245         }
2246         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2247         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2248         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2249         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2250
2251         *work = 4;
2252
2253         l5_cid = req1->fcoe_conn_id;
2254         if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2255                 goto err_reply;
2256
2257         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2258
2259         ctx = &cp->ctx_tbl[l5_cid];
2260         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2261                 goto err_reply;
2262
2263         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2264         if (ret) {
2265                 ret = 0;
2266                 goto err_reply;
2267         }
2268         cid = ctx->cid;
2269
2270         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2271         if (fctx) {
2272                 u32 hw_cid = BNX2X_HW_CID(cp, cid);
2273                 u32 val;
2274
2275                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2276                                              FCOE_CONNECTION_TYPE);
2277                 fctx->xstorm_ag_context.cdu_reserved = val;
2278                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2279                                              FCOE_CONNECTION_TYPE);
2280                 fctx->ustorm_ag_context.cdu_usage = val;
2281         }
2282         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2283                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2284                 goto err_reply;
2285         }
2286         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2287         if (!fcoe_offload)
2288                 goto err_reply;
2289
2290         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2291         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2292         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2293         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2294         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2295
2296         cid = BNX2X_HW_CID(cp, cid);
2297         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2298                                   FCOE_CONNECTION_TYPE, &l5_data);
2299         if (!ret)
2300                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2301
2302         return ret;
2303
2304 err_reply:
2305         if (cid != -1)
2306                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2307
2308         memset(&kcqe, 0, sizeof(kcqe));
2309         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2310         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2311         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2312
2313         cqes[0] = (struct kcqe *) &kcqe;
2314         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2315         return ret;
2316 }
2317
2318 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2319 {
2320         struct fcoe_kwqe_conn_enable_disable *req;
2321         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2322         union l5cm_specific_data l5_data;
2323         int ret;
2324         u32 cid, l5_cid;
2325         struct cnic_local *cp = dev->cnic_priv;
2326
2327         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2328         cid = req->context_id;
2329         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2330
2331         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2332                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2333                 return -ENOMEM;
2334         }
2335         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2336         if (!fcoe_enable)
2337                 return -ENOMEM;
2338
2339         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2340         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2341         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2342                                   FCOE_CONNECTION_TYPE, &l5_data);
2343         return ret;
2344 }
2345
2346 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2347 {
2348         struct fcoe_kwqe_conn_enable_disable *req;
2349         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2350         union l5cm_specific_data l5_data;
2351         int ret;
2352         u32 cid, l5_cid;
2353         struct cnic_local *cp = dev->cnic_priv;
2354
2355         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2356         cid = req->context_id;
2357         l5_cid = req->conn_id;
2358         if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2359                 return -EINVAL;
2360
2361         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2362
2363         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2364                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2365                 return -ENOMEM;
2366         }
2367         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2368         if (!fcoe_disable)
2369                 return -ENOMEM;
2370
2371         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2372         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2373         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2374                                   FCOE_CONNECTION_TYPE, &l5_data);
2375         return ret;
2376 }
2377
2378 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2379 {
2380         struct fcoe_kwqe_conn_destroy *req;
2381         union l5cm_specific_data l5_data;
2382         int ret;
2383         u32 cid, l5_cid;
2384         struct cnic_local *cp = dev->cnic_priv;
2385         struct cnic_context *ctx;
2386         struct fcoe_kcqe kcqe;
2387         struct kcqe *cqes[1];
2388
2389         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2390         cid = req->context_id;
2391         l5_cid = req->conn_id;
2392         if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2393                 return -EINVAL;
2394
2395         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2396
2397         ctx = &cp->ctx_tbl[l5_cid];
2398
2399         init_waitqueue_head(&ctx->waitq);
2400         ctx->wait_cond = 0;
2401
2402         memset(&l5_data, 0, sizeof(l5_data));
2403         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2404                                   FCOE_CONNECTION_TYPE, &l5_data);
2405         if (ret == 0) {
2406                 wait_event(ctx->waitq, ctx->wait_cond);
2407                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2408                 queue_delayed_work(cnic_wq, &cp->delete_task,
2409                                    msecs_to_jiffies(2000));
2410         }
2411
2412         memset(&kcqe, 0, sizeof(kcqe));
2413         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2414         kcqe.fcoe_conn_id = req->conn_id;
2415         kcqe.fcoe_conn_context_id = cid;
2416
2417         cqes[0] = (struct kcqe *) &kcqe;
2418         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2419         return ret;
2420 }
2421
2422 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2423 {
2424         struct fcoe_kwqe_destroy *req;
2425         union l5cm_specific_data l5_data;
2426         struct cnic_local *cp = dev->cnic_priv;
2427         int ret;
2428         u32 cid;
2429
2430         req = (struct fcoe_kwqe_destroy *) kwqe;
2431         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2432
2433         memset(&l5_data, 0, sizeof(l5_data));
2434         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY, cid,
2435                                   FCOE_CONNECTION_TYPE, &l5_data);
2436         return ret;
2437 }
2438
2439 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2440                                          struct kwqe *wqes[], u32 num_wqes)
2441 {
2442         int i, work, ret;
2443         u32 opcode;
2444         struct kwqe *kwqe;
2445
2446         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2447                 return -EAGAIN;         /* bnx2 is down */
2448
2449         for (i = 0; i < num_wqes; ) {
2450                 kwqe = wqes[i];
2451                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2452                 work = 1;
2453
2454                 switch (opcode) {
2455                 case ISCSI_KWQE_OPCODE_INIT1:
2456                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2457                         break;
2458                 case ISCSI_KWQE_OPCODE_INIT2:
2459                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2460                         break;
2461                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2462                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2463                                                      num_wqes - i, &work);
2464                         break;
2465                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2466                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2467                         break;
2468                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2469                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2470                         break;
2471                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2472                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2473                                                  &work);
2474                         break;
2475                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2476                         ret = cnic_bnx2x_close(dev, kwqe);
2477                         break;
2478                 case L4_KWQE_OPCODE_VALUE_RESET:
2479                         ret = cnic_bnx2x_reset(dev, kwqe);
2480                         break;
2481                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2482                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2483                         break;
2484                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2485                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2486                         break;
2487                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2488                         ret = 0;
2489                         break;
2490                 default:
2491                         ret = 0;
2492                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2493                                    opcode);
2494                         break;
2495                 }
2496                 if (ret < 0)
2497                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2498                                    opcode);
2499                 i += work;
2500         }
2501         return 0;
2502 }
2503
2504 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2505                                         struct kwqe *wqes[], u32 num_wqes)
2506 {
2507         struct cnic_local *cp = dev->cnic_priv;
2508         int i, work, ret;
2509         u32 opcode;
2510         struct kwqe *kwqe;
2511
2512         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2513                 return -EAGAIN;         /* bnx2 is down */
2514
2515         if (BNX2X_CHIP_NUM(cp->chip_id) == BNX2X_CHIP_NUM_57710)
2516                 return -EINVAL;
2517
2518         for (i = 0; i < num_wqes; ) {
2519                 kwqe = wqes[i];
2520                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2521                 work = 1;
2522
2523                 switch (opcode) {
2524                 case FCOE_KWQE_OPCODE_INIT1:
2525                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2526                                                     num_wqes - i, &work);
2527                         break;
2528                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2529                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2530                                                     num_wqes - i, &work);
2531                         break;
2532                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2533                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2534                         break;
2535                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2536                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2537                         break;
2538                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2539                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2540                         break;
2541                 case FCOE_KWQE_OPCODE_DESTROY:
2542                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2543                         break;
2544                 case FCOE_KWQE_OPCODE_STAT:
2545                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2546                         break;
2547                 default:
2548                         ret = 0;
2549                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2550                                    opcode);
2551                         break;
2552                 }
2553                 if (ret < 0)
2554                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2555                                    opcode);
2556                 i += work;
2557         }
2558         return 0;
2559 }
2560
2561 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2562                                    u32 num_wqes)
2563 {
2564         int ret = -EINVAL;
2565         u32 layer_code;
2566
2567         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2568                 return -EAGAIN;         /* bnx2x is down */
2569
2570         if (!num_wqes)
2571                 return 0;
2572
2573         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2574         switch (layer_code) {
2575         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2576         case KWQE_FLAGS_LAYER_MASK_L4:
2577         case KWQE_FLAGS_LAYER_MASK_L2:
2578                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2579                 break;
2580
2581         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2582                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2583                 break;
2584         }
2585         return ret;
2586 }
2587
2588 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2589 {
2590         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2591                 return KCQE_FLAGS_LAYER_MASK_L4;
2592
2593         return opflag & KCQE_FLAGS_LAYER_MASK;
2594 }
2595
2596 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2597 {
2598         struct cnic_local *cp = dev->cnic_priv;
2599         int i, j, comp = 0;
2600
2601         i = 0;
2602         j = 1;
2603         while (num_cqes) {
2604                 struct cnic_ulp_ops *ulp_ops;
2605                 int ulp_type;
2606                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2607                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2608
2609                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2610                         comp++;
2611
2612                 while (j < num_cqes) {
2613                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2614
2615                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2616                                 break;
2617
2618                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2619                                 comp++;
2620                         j++;
2621                 }
2622
2623                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2624                         ulp_type = CNIC_ULP_RDMA;
2625                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2626                         ulp_type = CNIC_ULP_ISCSI;
2627                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2628                         ulp_type = CNIC_ULP_FCOE;
2629                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2630                         ulp_type = CNIC_ULP_L4;
2631                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2632                         goto end;
2633                 else {
2634                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2635                                    kcqe_op_flag);
2636                         goto end;
2637                 }
2638
2639                 rcu_read_lock();
2640                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2641                 if (likely(ulp_ops)) {
2642                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2643                                                   cp->completed_kcq + i, j);
2644                 }
2645                 rcu_read_unlock();
2646 end:
2647                 num_cqes -= j;
2648                 i += j;
2649                 j = 1;
2650         }
2651         if (unlikely(comp))
2652                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2653 }
2654
2655 static u16 cnic_bnx2_next_idx(u16 idx)
2656 {
2657         return idx + 1;
2658 }
2659
2660 static u16 cnic_bnx2_hw_idx(u16 idx)
2661 {
2662         return idx;
2663 }
2664
2665 static u16 cnic_bnx2x_next_idx(u16 idx)
2666 {
2667         idx++;
2668         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2669                 idx++;
2670
2671         return idx;
2672 }
2673
2674 static u16 cnic_bnx2x_hw_idx(u16 idx)
2675 {
2676         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2677                 idx++;
2678         return idx;
2679 }
2680
2681 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2682 {
2683         struct cnic_local *cp = dev->cnic_priv;
2684         u16 i, ri, hw_prod, last;
2685         struct kcqe *kcqe;
2686         int kcqe_cnt = 0, last_cnt = 0;
2687
2688         i = ri = last = info->sw_prod_idx;
2689         ri &= MAX_KCQ_IDX;
2690         hw_prod = *info->hw_prod_idx_ptr;
2691         hw_prod = cp->hw_idx(hw_prod);
2692
2693         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2694                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2695                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2696                 i = cp->next_idx(i);
2697                 ri = i & MAX_KCQ_IDX;
2698                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2699                         last_cnt = kcqe_cnt;
2700                         last = i;
2701                 }
2702         }
2703
2704         info->sw_prod_idx = last;
2705         return last_cnt;
2706 }
2707
2708 static int cnic_l2_completion(struct cnic_local *cp)
2709 {
2710         u16 hw_cons, sw_cons;
2711         struct cnic_uio_dev *udev = cp->udev;
2712         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2713                                         (udev->l2_ring + (2 * BCM_PAGE_SIZE));
2714         u32 cmd;
2715         int comp = 0;
2716
2717         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2718                 return 0;
2719
2720         hw_cons = *cp->rx_cons_ptr;
2721         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2722                 hw_cons++;
2723
2724         sw_cons = cp->rx_cons;
2725         while (sw_cons != hw_cons) {
2726                 u8 cqe_fp_flags;
2727
2728                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2729                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2730                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2731                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2732                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2733                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2734                             cmd == RAMROD_CMD_ID_ETH_HALT)
2735                                 comp++;
2736                 }
2737                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2738         }
2739         return comp;
2740 }
2741
2742 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2743 {
2744         u16 rx_cons, tx_cons;
2745         int comp = 0;
2746
2747         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2748                 return;
2749
2750         rx_cons = *cp->rx_cons_ptr;
2751         tx_cons = *cp->tx_cons_ptr;
2752         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2753                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2754                         comp = cnic_l2_completion(cp);
2755
2756                 cp->tx_cons = tx_cons;
2757                 cp->rx_cons = rx_cons;
2758
2759                 if (cp->udev)
2760                         uio_event_notify(&cp->udev->cnic_uinfo);
2761         }
2762         if (comp)
2763                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2764 }
2765
2766 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2767 {
2768         struct cnic_local *cp = dev->cnic_priv;
2769         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2770         int kcqe_cnt;
2771
2772         /* status block index must be read before reading other fields */
2773         rmb();
2774         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2775
2776         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2777
2778                 service_kcqes(dev, kcqe_cnt);
2779
2780                 /* Tell compiler that status_blk fields can change. */
2781                 barrier();
2782                 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2783                 /* status block index must be read first */
2784                 rmb();
2785                 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2786         }
2787
2788         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2789
2790         cnic_chk_pkt_rings(cp);
2791
2792         return status_idx;
2793 }
2794
2795 static int cnic_service_bnx2(void *data, void *status_blk)
2796 {
2797         struct cnic_dev *dev = data;
2798
2799         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2800                 struct status_block *sblk = status_blk;
2801
2802                 return sblk->status_idx;
2803         }
2804
2805         return cnic_service_bnx2_queues(dev);
2806 }
2807
2808 static void cnic_service_bnx2_msix(unsigned long data)
2809 {
2810         struct cnic_dev *dev = (struct cnic_dev *) data;
2811         struct cnic_local *cp = dev->cnic_priv;
2812
2813         cp->last_status_idx = cnic_service_bnx2_queues(dev);
2814
2815         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2816                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2817 }
2818
2819 static void cnic_doirq(struct cnic_dev *dev)
2820 {
2821         struct cnic_local *cp = dev->cnic_priv;
2822
2823         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2824                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
2825
2826                 prefetch(cp->status_blk.gen);
2827                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2828
2829                 tasklet_schedule(&cp->cnic_irq_task);
2830         }
2831 }
2832
2833 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2834 {
2835         struct cnic_dev *dev = dev_instance;
2836         struct cnic_local *cp = dev->cnic_priv;
2837
2838         if (cp->ack_int)
2839                 cp->ack_int(dev);
2840
2841         cnic_doirq(dev);
2842
2843         return IRQ_HANDLED;
2844 }
2845
2846 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2847                                       u16 index, u8 op, u8 update)
2848 {
2849         struct cnic_local *cp = dev->cnic_priv;
2850         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2851                        COMMAND_REG_INT_ACK);
2852         struct igu_ack_register igu_ack;
2853
2854         igu_ack.status_block_index = index;
2855         igu_ack.sb_id_and_flags =
2856                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2857                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2858                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2859                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2860
2861         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2862 }
2863
2864 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
2865                             u16 index, u8 op, u8 update)
2866 {
2867         struct igu_regular cmd_data;
2868         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
2869
2870         cmd_data.sb_id_and_flags =
2871                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
2872                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
2873                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
2874                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
2875
2876
2877         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
2878 }
2879
2880 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2881 {
2882         struct cnic_local *cp = dev->cnic_priv;
2883
2884         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
2885                            IGU_INT_DISABLE, 0);
2886 }
2887
2888 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
2889 {
2890         struct cnic_local *cp = dev->cnic_priv;
2891
2892         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
2893                         IGU_INT_DISABLE, 0);
2894 }
2895
2896 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
2897 {
2898         u32 last_status = *info->status_idx_ptr;
2899         int kcqe_cnt;
2900
2901         /* status block index must be read before reading the KCQ */
2902         rmb();
2903         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
2904
2905                 service_kcqes(dev, kcqe_cnt);
2906
2907                 /* Tell compiler that sblk fields can change. */
2908                 barrier();
2909
2910                 last_status = *info->status_idx_ptr;
2911                 /* status block index must be read before reading the KCQ */
2912                 rmb();
2913         }
2914         return last_status;
2915 }
2916
2917 static void cnic_service_bnx2x_bh(unsigned long data)
2918 {
2919         struct cnic_dev *dev = (struct cnic_dev *) data;
2920         struct cnic_local *cp = dev->cnic_priv;
2921         u32 status_idx, new_status_idx;
2922
2923         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2924                 return;
2925
2926         while (1) {
2927                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
2928
2929                 CNIC_WR16(dev, cp->kcq1.io_addr,
2930                           cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
2931
2932                 if (!BNX2X_CHIP_IS_E2(cp->chip_id)) {
2933                         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
2934                                            status_idx, IGU_INT_ENABLE, 1);
2935                         break;
2936                 }
2937
2938                 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
2939
2940                 if (new_status_idx != status_idx)
2941                         continue;
2942
2943                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
2944                           MAX_KCQ_IDX);
2945
2946                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
2947                                 status_idx, IGU_INT_ENABLE, 1);
2948
2949                 break;
2950         }
2951 }
2952
2953 static int cnic_service_bnx2x(void *data, void *status_blk)
2954 {
2955         struct cnic_dev *dev = data;
2956         struct cnic_local *cp = dev->cnic_priv;
2957
2958         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
2959                 cnic_doirq(dev);
2960
2961         cnic_chk_pkt_rings(cp);
2962
2963         return 0;
2964 }
2965
2966 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
2967 {
2968         struct cnic_ulp_ops *ulp_ops;
2969
2970         if (if_type == CNIC_ULP_ISCSI)
2971                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2972
2973         mutex_lock(&cnic_lock);
2974         ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
2975                                             lockdep_is_held(&cnic_lock));
2976         if (!ulp_ops) {
2977                 mutex_unlock(&cnic_lock);
2978                 return;
2979         }
2980         set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2981         mutex_unlock(&cnic_lock);
2982
2983         if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2984                 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2985
2986         clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2987 }
2988
2989 static void cnic_ulp_stop(struct cnic_dev *dev)
2990 {
2991         struct cnic_local *cp = dev->cnic_priv;
2992         int if_type;
2993
2994         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
2995                 cnic_ulp_stop_one(cp, if_type);
2996 }
2997
2998 static void cnic_ulp_start(struct cnic_dev *dev)
2999 {
3000         struct cnic_local *cp = dev->cnic_priv;
3001         int if_type;
3002
3003         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3004                 struct cnic_ulp_ops *ulp_ops;
3005
3006                 mutex_lock(&cnic_lock);
3007                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3008                                                     lockdep_is_held(&cnic_lock));
3009                 if (!ulp_ops || !ulp_ops->cnic_start) {
3010                         mutex_unlock(&cnic_lock);
3011                         continue;
3012                 }
3013                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3014                 mutex_unlock(&cnic_lock);
3015
3016                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3017                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3018
3019                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3020         }
3021 }
3022
3023 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3024 {
3025         struct cnic_dev *dev = data;
3026
3027         switch (info->cmd) {
3028         case CNIC_CTL_STOP_CMD:
3029                 cnic_hold(dev);
3030
3031                 cnic_ulp_stop(dev);
3032                 cnic_stop_hw(dev);
3033
3034                 cnic_put(dev);
3035                 break;
3036         case CNIC_CTL_START_CMD:
3037                 cnic_hold(dev);
3038
3039                 if (!cnic_start_hw(dev))
3040                         cnic_ulp_start(dev);
3041
3042                 cnic_put(dev);
3043                 break;
3044         case CNIC_CTL_STOP_ISCSI_CMD: {
3045                 struct cnic_local *cp = dev->cnic_priv;
3046                 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3047                 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3048                 break;
3049         }
3050         case CNIC_CTL_COMPLETION_CMD: {
3051                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
3052                 u32 l5_cid;
3053                 struct cnic_local *cp = dev->cnic_priv;
3054
3055                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3056                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3057
3058                         ctx->wait_cond = 1;
3059                         wake_up(&ctx->waitq);
3060                 }
3061                 break;
3062         }
3063         default:
3064                 return -EINVAL;
3065         }
3066         return 0;
3067 }
3068
3069 static void cnic_ulp_init(struct cnic_dev *dev)
3070 {
3071         int i;
3072         struct cnic_local *cp = dev->cnic_priv;
3073
3074         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3075                 struct cnic_ulp_ops *ulp_ops;
3076
3077                 mutex_lock(&cnic_lock);
3078                 ulp_ops = cnic_ulp_tbl_prot(i);
3079                 if (!ulp_ops || !ulp_ops->cnic_init) {
3080                         mutex_unlock(&cnic_lock);
3081                         continue;
3082                 }
3083                 ulp_get(ulp_ops);
3084                 mutex_unlock(&cnic_lock);
3085
3086                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3087                         ulp_ops->cnic_init(dev);
3088
3089                 ulp_put(ulp_ops);
3090         }
3091 }
3092
3093 static void cnic_ulp_exit(struct cnic_dev *dev)
3094 {
3095         int i;
3096         struct cnic_local *cp = dev->cnic_priv;
3097
3098         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3099                 struct cnic_ulp_ops *ulp_ops;
3100
3101                 mutex_lock(&cnic_lock);
3102                 ulp_ops = cnic_ulp_tbl_prot(i);
3103                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3104                         mutex_unlock(&cnic_lock);
3105                         continue;
3106                 }
3107                 ulp_get(ulp_ops);
3108                 mutex_unlock(&cnic_lock);
3109
3110                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3111                         ulp_ops->cnic_exit(dev);
3112
3113                 ulp_put(ulp_ops);
3114         }
3115 }
3116
3117 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3118 {
3119         struct cnic_dev *dev = csk->dev;
3120         struct l4_kwq_offload_pg *l4kwqe;
3121         struct kwqe *wqes[1];
3122
3123         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3124         memset(l4kwqe, 0, sizeof(*l4kwqe));
3125         wqes[0] = (struct kwqe *) l4kwqe;
3126
3127         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3128         l4kwqe->flags =
3129                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3130         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3131
3132         l4kwqe->da0 = csk->ha[0];
3133         l4kwqe->da1 = csk->ha[1];
3134         l4kwqe->da2 = csk->ha[2];
3135         l4kwqe->da3 = csk->ha[3];
3136         l4kwqe->da4 = csk->ha[4];
3137         l4kwqe->da5 = csk->ha[5];
3138
3139         l4kwqe->sa0 = dev->mac_addr[0];
3140         l4kwqe->sa1 = dev->mac_addr[1];
3141         l4kwqe->sa2 = dev->mac_addr[2];
3142         l4kwqe->sa3 = dev->mac_addr[3];
3143         l4kwqe->sa4 = dev->mac_addr[4];
3144         l4kwqe->sa5 = dev->mac_addr[5];
3145
3146         l4kwqe->etype = ETH_P_IP;
3147         l4kwqe->ipid_start = DEF_IPID_START;
3148         l4kwqe->host_opaque = csk->l5_cid;
3149
3150         if (csk->vlan_id) {
3151                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3152                 l4kwqe->vlan_tag = csk->vlan_id;
3153                 l4kwqe->l2hdr_nbytes += 4;
3154         }
3155
3156         return dev->submit_kwqes(dev, wqes, 1);
3157 }
3158
3159 static int cnic_cm_update_pg(struct cnic_sock *csk)
3160 {
3161         struct cnic_dev *dev = csk->dev;
3162         struct l4_kwq_update_pg *l4kwqe;
3163         struct kwqe *wqes[1];
3164
3165         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3166         memset(l4kwqe, 0, sizeof(*l4kwqe));
3167         wqes[0] = (struct kwqe *) l4kwqe;
3168
3169         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3170         l4kwqe->flags =
3171                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3172         l4kwqe->pg_cid = csk->pg_cid;
3173
3174         l4kwqe->da0 = csk->ha[0];
3175         l4kwqe->da1 = csk->ha[1];
3176         l4kwqe->da2 = csk->ha[2];
3177         l4kwqe->da3 = csk->ha[3];
3178         l4kwqe->da4 = csk->ha[4];
3179         l4kwqe->da5 = csk->ha[5];
3180
3181         l4kwqe->pg_host_opaque = csk->l5_cid;
3182         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3183
3184         return dev->submit_kwqes(dev, wqes, 1);
3185 }
3186
3187 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3188 {
3189         struct cnic_dev *dev = csk->dev;
3190         struct l4_kwq_upload *l4kwqe;
3191         struct kwqe *wqes[1];
3192
3193         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3194         memset(l4kwqe, 0, sizeof(*l4kwqe));
3195         wqes[0] = (struct kwqe *) l4kwqe;
3196
3197         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3198         l4kwqe->flags =
3199                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3200         l4kwqe->cid = csk->pg_cid;
3201
3202         return dev->submit_kwqes(dev, wqes, 1);
3203 }
3204
3205 static int cnic_cm_conn_req(struct cnic_sock *csk)
3206 {
3207         struct cnic_dev *dev = csk->dev;
3208         struct l4_kwq_connect_req1 *l4kwqe1;
3209         struct l4_kwq_connect_req2 *l4kwqe2;
3210         struct l4_kwq_connect_req3 *l4kwqe3;
3211         struct kwqe *wqes[3];
3212         u8 tcp_flags = 0;
3213         int num_wqes = 2;
3214
3215         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3216         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3217         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3218         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3219         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3220         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3221
3222         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3223         l4kwqe3->flags =
3224                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3225         l4kwqe3->ka_timeout = csk->ka_timeout;
3226         l4kwqe3->ka_interval = csk->ka_interval;
3227         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3228         l4kwqe3->tos = csk->tos;
3229         l4kwqe3->ttl = csk->ttl;
3230         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3231         l4kwqe3->pmtu = csk->mtu;
3232         l4kwqe3->rcv_buf = csk->rcv_buf;
3233         l4kwqe3->snd_buf = csk->snd_buf;
3234         l4kwqe3->seed = csk->seed;
3235
3236         wqes[0] = (struct kwqe *) l4kwqe1;
3237         if (test_bit(SK_F_IPV6, &csk->flags)) {
3238                 wqes[1] = (struct kwqe *) l4kwqe2;
3239                 wqes[2] = (struct kwqe *) l4kwqe3;
3240                 num_wqes = 3;
3241
3242                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3243                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3244                 l4kwqe2->flags =
3245                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3246                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3247                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3248                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3249                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3250                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3251                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3252                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3253                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3254                                sizeof(struct tcphdr);
3255         } else {
3256                 wqes[1] = (struct kwqe *) l4kwqe3;
3257                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3258                                sizeof(struct tcphdr);
3259         }
3260
3261         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3262         l4kwqe1->flags =
3263                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3264                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3265         l4kwqe1->cid = csk->cid;
3266         l4kwqe1->pg_cid = csk->pg_cid;
3267         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3268         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3269         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3270         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3271         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3272                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3273         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3274                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3275         if (csk->tcp_flags & SK_TCP_NAGLE)
3276                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3277         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3278                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3279         if (csk->tcp_flags & SK_TCP_SACK)
3280                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3281         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3282                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3283
3284         l4kwqe1->tcp_flags = tcp_flags;
3285
3286         return dev->submit_kwqes(dev, wqes, num_wqes);
3287 }
3288
3289 static int cnic_cm_close_req(struct cnic_sock *csk)
3290 {
3291         struct cnic_dev *dev = csk->dev;
3292         struct l4_kwq_close_req *l4kwqe;
3293         struct kwqe *wqes[1];
3294
3295         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3296         memset(l4kwqe, 0, sizeof(*l4kwqe));
3297         wqes[0] = (struct kwqe *) l4kwqe;
3298
3299         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3300         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3301         l4kwqe->cid = csk->cid;
3302
3303         return dev->submit_kwqes(dev, wqes, 1);
3304 }
3305
3306 static int cnic_cm_abort_req(struct cnic_sock *csk)
3307 {
3308         struct cnic_dev *dev = csk->dev;
3309         struct l4_kwq_reset_req *l4kwqe;
3310         struct kwqe *wqes[1];
3311
3312         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3313         memset(l4kwqe, 0, sizeof(*l4kwqe));
3314         wqes[0] = (struct kwqe *) l4kwqe;
3315
3316         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3317         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3318         l4kwqe->cid = csk->cid;
3319
3320         return dev->submit_kwqes(dev, wqes, 1);
3321 }
3322
3323 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3324                           u32 l5_cid, struct cnic_sock **csk, void *context)
3325 {
3326         struct cnic_local *cp = dev->cnic_priv;
3327         struct cnic_sock *csk1;
3328
3329         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3330                 return -EINVAL;
3331
3332         if (cp->ctx_tbl) {
3333                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3334
3335                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3336                         return -EAGAIN;
3337         }
3338
3339         csk1 = &cp->csk_tbl[l5_cid];
3340         if (atomic_read(&csk1->ref_count))
3341                 return -EAGAIN;
3342
3343         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3344                 return -EBUSY;
3345
3346         csk1->dev = dev;
3347         csk1->cid = cid;
3348         csk1->l5_cid = l5_cid;
3349         csk1->ulp_type = ulp_type;
3350         csk1->context = context;
3351
3352         csk1->ka_timeout = DEF_KA_TIMEOUT;
3353         csk1->ka_interval = DEF_KA_INTERVAL;
3354         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3355         csk1->tos = DEF_TOS;
3356         csk1->ttl = DEF_TTL;
3357         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3358         csk1->rcv_buf = DEF_RCV_BUF;
3359         csk1->snd_buf = DEF_SND_BUF;
3360         csk1->seed = DEF_SEED;
3361
3362         *csk = csk1;
3363         return 0;
3364 }
3365
3366 static void cnic_cm_cleanup(struct cnic_sock *csk)
3367 {
3368         if (csk->src_port) {
3369                 struct cnic_dev *dev = csk->dev;
3370                 struct cnic_local *cp = dev->cnic_priv;
3371
3372                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3373                 csk->src_port = 0;
3374         }
3375 }
3376
3377 static void cnic_close_conn(struct cnic_sock *csk)
3378 {
3379         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3380                 cnic_cm_upload_pg(csk);
3381                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3382         }
3383         cnic_cm_cleanup(csk);
3384 }
3385
3386 static int cnic_cm_destroy(struct cnic_sock *csk)
3387 {
3388         if (!cnic_in_use(csk))
3389                 return -EINVAL;
3390
3391         csk_hold(csk);
3392         clear_bit(SK_F_INUSE, &csk->flags);
3393         smp_mb__after_clear_bit();
3394         while (atomic_read(&csk->ref_count) != 1)
3395                 msleep(1);
3396         cnic_cm_cleanup(csk);
3397
3398         csk->flags = 0;
3399         csk_put(csk);
3400         return 0;
3401 }
3402
3403 static inline u16 cnic_get_vlan(struct net_device *dev,
3404                                 struct net_device **vlan_dev)
3405 {
3406         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3407                 *vlan_dev = vlan_dev_real_dev(dev);
3408                 return vlan_dev_vlan_id(dev);
3409         }
3410         *vlan_dev = dev;
3411         return 0;
3412 }
3413
3414 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3415                              struct dst_entry **dst)
3416 {
3417 #if defined(CONFIG_INET)
3418         struct rtable *rt;
3419
3420         rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3421         if (!IS_ERR(rt)) {
3422                 *dst = &rt->dst;
3423                 return 0;
3424         }
3425         return PTR_ERR(rt);
3426 #else
3427         return -ENETUNREACH;
3428 #endif
3429 }
3430
3431 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3432                              struct dst_entry **dst)
3433 {
3434 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3435         struct flowi6 fl6;
3436
3437         memset(&fl6, 0, sizeof(fl6));
3438         ipv6_addr_copy(&fl6.daddr, &dst_addr->sin6_addr);
3439         if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3440                 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3441
3442         *dst = ip6_route_output(&init_net, NULL, &fl6);
3443         if (*dst)
3444                 return 0;
3445 #endif
3446
3447         return -ENETUNREACH;
3448 }
3449
3450 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3451                                            int ulp_type)
3452 {
3453         struct cnic_dev *dev = NULL;
3454         struct dst_entry *dst;
3455         struct net_device *netdev = NULL;
3456         int err = -ENETUNREACH;
3457
3458         if (dst_addr->sin_family == AF_INET)
3459                 err = cnic_get_v4_route(dst_addr, &dst);
3460         else if (dst_addr->sin_family == AF_INET6) {
3461                 struct sockaddr_in6 *dst_addr6 =
3462                         (struct sockaddr_in6 *) dst_addr;
3463
3464                 err = cnic_get_v6_route(dst_addr6, &dst);
3465         } else
3466                 return NULL;
3467
3468         if (err)
3469                 return NULL;
3470
3471         if (!dst->dev)
3472                 goto done;
3473
3474         cnic_get_vlan(dst->dev, &netdev);
3475
3476         dev = cnic_from_netdev(netdev);
3477
3478 done:
3479         dst_release(dst);
3480         if (dev)
3481                 cnic_put(dev);
3482         return dev;
3483 }
3484
3485 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3486 {
3487         struct cnic_dev *dev = csk->dev;
3488         struct cnic_local *cp = dev->cnic_priv;
3489
3490         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3491 }
3492
3493 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3494 {
3495         struct cnic_dev *dev = csk->dev;
3496         struct cnic_local *cp = dev->cnic_priv;
3497         int is_v6, rc = 0;
3498         struct dst_entry *dst = NULL;
3499         struct net_device *realdev;
3500         __be16 local_port;
3501         u32 port_id;
3502
3503         if (saddr->local.v6.sin6_family == AF_INET6 &&
3504             saddr->remote.v6.sin6_family == AF_INET6)
3505                 is_v6 = 1;
3506         else if (saddr->local.v4.sin_family == AF_INET &&
3507                  saddr->remote.v4.sin_family == AF_INET)
3508                 is_v6 = 0;
3509         else
3510                 return -EINVAL;
3511
3512         clear_bit(SK_F_IPV6, &csk->flags);
3513
3514         if (is_v6) {
3515                 set_bit(SK_F_IPV6, &csk->flags);
3516                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3517
3518                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3519                        sizeof(struct in6_addr));
3520                 csk->dst_port = saddr->remote.v6.sin6_port;
3521                 local_port = saddr->local.v6.sin6_port;
3522
3523         } else {
3524                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3525
3526                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3527                 csk->dst_port = saddr->remote.v4.sin_port;
3528                 local_port = saddr->local.v4.sin_port;
3529         }
3530
3531         csk->vlan_id = 0;
3532         csk->mtu = dev->netdev->mtu;
3533         if (dst && dst->dev) {
3534                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3535                 if (realdev == dev->netdev) {
3536                         csk->vlan_id = vlan;
3537                         csk->mtu = dst_mtu(dst);
3538                 }
3539         }
3540
3541         port_id = be16_to_cpu(local_port);
3542         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3543             port_id < CNIC_LOCAL_PORT_MAX) {
3544                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3545                         port_id = 0;
3546         } else
3547                 port_id = 0;
3548
3549         if (!port_id) {
3550                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3551                 if (port_id == -1) {
3552                         rc = -ENOMEM;
3553                         goto err_out;
3554                 }
3555                 local_port = cpu_to_be16(port_id);
3556         }
3557         csk->src_port = local_port;
3558
3559 err_out:
3560         dst_release(dst);
3561         return rc;
3562 }
3563
3564 static void cnic_init_csk_state(struct cnic_sock *csk)
3565 {
3566         csk->state = 0;
3567         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3568         clear_bit(SK_F_CLOSING, &csk->flags);
3569 }
3570
3571 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3572 {
3573         struct cnic_local *cp = csk->dev->cnic_priv;
3574         int err = 0;
3575
3576         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3577                 return -EOPNOTSUPP;
3578
3579         if (!cnic_in_use(csk))
3580                 return -EINVAL;
3581
3582         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3583                 return -EINVAL;
3584
3585         cnic_init_csk_state(csk);
3586
3587         err = cnic_get_route(csk, saddr);
3588         if (err)
3589                 goto err_out;
3590
3591         err = cnic_resolve_addr(csk, saddr);
3592         if (!err)
3593                 return 0;
3594
3595 err_out:
3596         clear_bit(SK_F_CONNECT_START, &csk->flags);
3597         return err;
3598 }
3599
3600 static int cnic_cm_abort(struct cnic_sock *csk)
3601 {
3602         struct cnic_local *cp = csk->dev->cnic_priv;
3603         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3604
3605         if (!cnic_in_use(csk))
3606                 return -EINVAL;
3607
3608         if (cnic_abort_prep(csk))
3609                 return cnic_cm_abort_req(csk);
3610
3611         /* Getting here means that we haven't started connect, or
3612          * connect was not successful.
3613          */
3614
3615         cp->close_conn(csk, opcode);
3616         if (csk->state != opcode)
3617                 return -EALREADY;
3618
3619         return 0;
3620 }
3621
3622 static int cnic_cm_close(struct cnic_sock *csk)
3623 {
3624         if (!cnic_in_use(csk))
3625                 return -EINVAL;
3626
3627         if (cnic_close_prep(csk)) {
3628                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3629                 return cnic_cm_close_req(csk);
3630         } else {
3631                 return -EALREADY;
3632         }
3633         return 0;
3634 }
3635
3636 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3637                            u8 opcode)
3638 {
3639         struct cnic_ulp_ops *ulp_ops;
3640         int ulp_type = csk->ulp_type;
3641
3642         rcu_read_lock();
3643         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3644         if (ulp_ops) {
3645                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3646                         ulp_ops->cm_connect_complete(csk);
3647                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3648                         ulp_ops->cm_close_complete(csk);
3649                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3650                         ulp_ops->cm_remote_abort(csk);
3651                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3652                         ulp_ops->cm_abort_complete(csk);
3653                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3654                         ulp_ops->cm_remote_close(csk);
3655         }
3656         rcu_read_unlock();
3657 }
3658
3659 static int cnic_cm_set_pg(struct cnic_sock *csk)
3660 {
3661         if (cnic_offld_prep(csk)) {
3662                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3663                         cnic_cm_update_pg(csk);
3664                 else
3665                         cnic_cm_offload_pg(csk);
3666         }
3667         return 0;
3668 }
3669
3670 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3671 {
3672         struct cnic_local *cp = dev->cnic_priv;
3673         u32 l5_cid = kcqe->pg_host_opaque;
3674         u8 opcode = kcqe->op_code;
3675         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3676
3677         csk_hold(csk);
3678         if (!cnic_in_use(csk))
3679                 goto done;
3680
3681         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3682                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3683                 goto done;
3684         }
3685         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3686         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3687                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3688                 cnic_cm_upcall(cp, csk,
3689                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3690                 goto done;
3691         }
3692
3693         csk->pg_cid = kcqe->pg_cid;
3694         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3695         cnic_cm_conn_req(csk);
3696
3697 done:
3698         csk_put(csk);
3699 }
3700
3701 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3702 {
3703         struct cnic_local *cp = dev->cnic_priv;
3704         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3705         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3706         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3707
3708         ctx->timestamp = jiffies;
3709         ctx->wait_cond = 1;
3710         wake_up(&ctx->waitq);
3711 }
3712
3713 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3714 {
3715         struct cnic_local *cp = dev->cnic_priv;
3716         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3717         u8 opcode = l4kcqe->op_code;
3718         u32 l5_cid;
3719         struct cnic_sock *csk;
3720
3721         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3722                 cnic_process_fcoe_term_conn(dev, kcqe);
3723                 return;
3724         }
3725         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3726             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3727                 cnic_cm_process_offld_pg(dev, l4kcqe);
3728                 return;
3729         }
3730
3731         l5_cid = l4kcqe->conn_id;
3732         if (opcode & 0x80)
3733                 l5_cid = l4kcqe->cid;
3734         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3735                 return;
3736
3737         csk = &cp->csk_tbl[l5_cid];
3738         csk_hold(csk);
3739
3740         if (!cnic_in_use(csk)) {
3741                 csk_put(csk);
3742                 return;
3743         }
3744
3745         switch (opcode) {
3746         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3747                 if (l4kcqe->status != 0) {
3748                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3749                         cnic_cm_upcall(cp, csk,
3750                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3751                 }
3752                 break;
3753         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3754                 if (l4kcqe->status == 0)
3755                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3756
3757                 smp_mb__before_clear_bit();
3758                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3759                 cnic_cm_upcall(cp, csk, opcode);
3760                 break;
3761
3762         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3763         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3764         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3765         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3766         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3767                 cp->close_conn(csk, opcode);
3768                 break;
3769
3770         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3771                 /* after we already sent CLOSE_REQ */
3772                 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
3773                     !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
3774                     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3775                         cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
3776                 else
3777                         cnic_cm_upcall(cp, csk, opcode);
3778                 break;
3779         }
3780         csk_put(csk);
3781 }
3782
3783 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3784 {
3785         struct cnic_dev *dev = data;
3786         int i;
3787
3788         for (i = 0; i < num; i++)
3789                 cnic_cm_process_kcqe(dev, kcqe[i]);
3790 }
3791
3792 static struct cnic_ulp_ops cm_ulp_ops = {
3793         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3794 };
3795
3796 static void cnic_cm_free_mem(struct cnic_dev *dev)
3797 {
3798         struct cnic_local *cp = dev->cnic_priv;
3799
3800         kfree(cp->csk_tbl);
3801         cp->csk_tbl = NULL;
3802         cnic_free_id_tbl(&cp->csk_port_tbl);
3803 }
3804
3805 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3806 {
3807         struct cnic_local *cp = dev->cnic_priv;
3808         u32 port_id;
3809
3810         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3811                               GFP_KERNEL);
3812         if (!cp->csk_tbl)
3813                 return -ENOMEM;
3814
3815         get_random_bytes(&port_id, sizeof(port_id));
3816         port_id %= CNIC_LOCAL_PORT_RANGE;
3817         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3818                              CNIC_LOCAL_PORT_MIN, port_id)) {
3819                 cnic_cm_free_mem(dev);
3820                 return -ENOMEM;
3821         }
3822         return 0;
3823 }
3824
3825 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3826 {
3827         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
3828                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
3829                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
3830                 csk->state = opcode;
3831         }
3832
3833         /* 1. If event opcode matches the expected event in csk->state
3834          * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
3835          *    event
3836          * 3. If the expected event is 0, meaning the connection was never
3837          *    never established, we accept the opcode from cm_abort.
3838          */
3839         if (opcode == csk->state || csk->state == 0 ||
3840             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
3841             csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
3842                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
3843                         if (csk->state == 0)
3844                                 csk->state = opcode;
3845                         return 1;
3846                 }
3847         }
3848         return 0;
3849 }
3850
3851 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3852 {
3853         struct cnic_dev *dev = csk->dev;
3854         struct cnic_local *cp = dev->cnic_priv;
3855
3856         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
3857                 cnic_cm_upcall(cp, csk, opcode);
3858                 return;
3859         }
3860
3861         clear_bit(SK_F_CONNECT_START, &csk->flags);
3862         cnic_close_conn(csk);
3863         csk->state = opcode;
3864         cnic_cm_upcall(cp, csk, opcode);
3865 }
3866
3867 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3868 {
3869 }
3870
3871 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3872 {
3873         u32 seed;
3874
3875         get_random_bytes(&seed, 4);
3876         cnic_ctx_wr(dev, 45, 0, seed);
3877         return 0;
3878 }
3879
3880 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3881 {
3882         struct cnic_dev *dev = csk->dev;
3883         struct cnic_local *cp = dev->cnic_priv;
3884         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3885         union l5cm_specific_data l5_data;
3886         u32 cmd = 0;
3887         int close_complete = 0;
3888
3889         switch (opcode) {
3890         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3891         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3892         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3893                 if (cnic_ready_to_close(csk, opcode)) {
3894                         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3895                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3896                         else
3897                                 close_complete = 1;
3898                 }
3899                 break;
3900         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3901                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3902                 break;
3903         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3904                 close_complete = 1;
3905                 break;
3906         }
3907         if (cmd) {
3908                 memset(&l5_data, 0, sizeof(l5_data));
3909
3910                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3911                                     &l5_data);
3912         } else if (close_complete) {
3913                 ctx->timestamp = jiffies;
3914                 cnic_close_conn(csk);
3915                 cnic_cm_upcall(cp, csk, csk->state);
3916         }
3917 }
3918
3919 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3920 {
3921         struct cnic_local *cp = dev->cnic_priv;
3922         int i;
3923
3924         if (!cp->ctx_tbl)
3925                 return;
3926
3927         if (!netif_running(dev->netdev))
3928                 return;
3929
3930         for (i = 0; i < cp->max_cid_space; i++) {
3931                 struct cnic_context *ctx = &cp->ctx_tbl[i];
3932
3933                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3934                         msleep(10);
3935
3936                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3937                         netdev_warn(dev->netdev, "CID %x not deleted\n",
3938                                    ctx->cid);
3939         }
3940
3941         cancel_delayed_work(&cp->delete_task);
3942         flush_workqueue(cnic_wq);
3943
3944         if (atomic_read(&cp->iscsi_conn) != 0)
3945                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
3946                             atomic_read(&cp->iscsi_conn));
3947 }
3948
3949 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3950 {
3951         struct cnic_local *cp = dev->cnic_priv;
3952         u32 pfid = cp->pfid;
3953         u32 port = CNIC_PORT(cp);
3954
3955         cnic_init_bnx2x_mac(dev);
3956         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3957
3958         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3959                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
3960
3961         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3962                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
3963         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3964                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
3965                 DEF_MAX_DA_COUNT);
3966
3967         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3968                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
3969         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3970                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
3971         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3972                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
3973         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3974                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
3975
3976         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
3977                 DEF_MAX_CWND);
3978         return 0;
3979 }
3980
3981 static void cnic_delete_task(struct work_struct *work)
3982 {
3983         struct cnic_local *cp;
3984         struct cnic_dev *dev;
3985         u32 i;
3986         int need_resched = 0;
3987
3988         cp = container_of(work, struct cnic_local, delete_task.work);
3989         dev = cp->dev;
3990
3991         if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
3992                 struct drv_ctl_info info;
3993
3994                 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
3995
3996                 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
3997                 cp->ethdev->drv_ctl(dev->netdev, &info);
3998         }
3999
4000         for (i = 0; i < cp->max_cid_space; i++) {
4001                 struct cnic_context *ctx = &cp->ctx_tbl[i];
4002
4003                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4004                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4005                         continue;
4006
4007                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4008                         need_resched = 1;
4009                         continue;
4010                 }
4011
4012                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4013                         continue;
4014
4015                 cnic_bnx2x_destroy_ramrod(dev, i);
4016
4017                 cnic_free_bnx2x_conn_resc(dev, i);
4018                 if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4019                         atomic_dec(&cp->iscsi_conn);
4020
4021                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4022         }
4023
4024         if (need_resched)
4025                 queue_delayed_work(cnic_wq, &cp->delete_task,
4026                                    msecs_to_jiffies(10));
4027
4028 }
4029
4030 static int cnic_cm_open(struct cnic_dev *dev)
4031 {
4032         struct cnic_local *cp = dev->cnic_priv;
4033         int err;
4034
4035         err = cnic_cm_alloc_mem(dev);
4036         if (err)
4037                 return err;
4038
4039         err = cp->start_cm(dev);
4040
4041         if (err)
4042                 goto err_out;
4043
4044         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4045
4046         dev->cm_create = cnic_cm_create;
4047         dev->cm_destroy = cnic_cm_destroy;
4048         dev->cm_connect = cnic_cm_connect;
4049         dev->cm_abort = cnic_cm_abort;
4050         dev->cm_close = cnic_cm_close;
4051         dev->cm_select_dev = cnic_cm_select_dev;
4052
4053         cp->ulp_handle[CNIC_ULP_L4] = dev;
4054         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4055         return 0;
4056
4057 err_out:
4058         cnic_cm_free_mem(dev);
4059         return err;
4060 }
4061
4062 static int cnic_cm_shutdown(struct cnic_dev *dev)
4063 {
4064         struct cnic_local *cp = dev->cnic_priv;
4065         int i;
4066
4067         cp->stop_cm(dev);
4068
4069         if (!cp->csk_tbl)
4070                 return 0;
4071
4072         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4073                 struct cnic_sock *csk = &cp->csk_tbl[i];
4074
4075                 clear_bit(SK_F_INUSE, &csk->flags);
4076                 cnic_cm_cleanup(csk);
4077         }
4078         cnic_cm_free_mem(dev);
4079
4080         return 0;
4081 }
4082
4083 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4084 {
4085         u32 cid_addr;
4086         int i;
4087
4088         cid_addr = GET_CID_ADDR(cid);
4089
4090         for (i = 0; i < CTX_SIZE; i += 4)
4091                 cnic_ctx_wr(dev, cid_addr, i, 0);
4092 }
4093
4094 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4095 {
4096         struct cnic_local *cp = dev->cnic_priv;
4097         int ret = 0, i;
4098         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4099
4100         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4101                 return 0;
4102
4103         for (i = 0; i < cp->ctx_blks; i++) {
4104                 int j;
4105                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4106                 u32 val;
4107
4108                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
4109
4110                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4111                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4112                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4113                         (u64) cp->ctx_arr[i].mapping >> 32);
4114                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4115                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4116                 for (j = 0; j < 10; j++) {
4117
4118                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4119                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4120                                 break;
4121                         udelay(5);
4122                 }
4123                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4124                         ret = -EBUSY;
4125                         break;
4126                 }
4127         }
4128         return ret;
4129 }
4130
4131 static void cnic_free_irq(struct cnic_dev *dev)
4132 {
4133         struct cnic_local *cp = dev->cnic_priv;
4134         struct cnic_eth_dev *ethdev = cp->ethdev;
4135
4136         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4137                 cp->disable_int_sync(dev);
4138                 tasklet_kill(&cp->cnic_irq_task);
4139                 free_irq(ethdev->irq_arr[0].vector, dev);
4140         }
4141 }
4142
4143 static int cnic_request_irq(struct cnic_dev *dev)
4144 {
4145         struct cnic_local *cp = dev->cnic_priv;
4146         struct cnic_eth_dev *ethdev = cp->ethdev;
4147         int err;
4148
4149         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4150         if (err)
4151                 tasklet_disable(&cp->cnic_irq_task);
4152
4153         return err;
4154 }
4155
4156 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4157 {
4158         struct cnic_local *cp = dev->cnic_priv;
4159         struct cnic_eth_dev *ethdev = cp->ethdev;
4160
4161         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4162                 int err, i = 0;
4163                 int sblk_num = cp->status_blk_num;
4164                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4165                            BNX2_HC_SB_CONFIG_1;
4166
4167                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4168
4169                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4170                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4171                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4172
4173                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4174                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4175                              (unsigned long) dev);
4176                 err = cnic_request_irq(dev);
4177                 if (err)
4178                         return err;
4179
4180                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4181                        i < 10) {
4182                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4183                                 1 << (11 + sblk_num));
4184                         udelay(10);
4185                         i++;
4186                         barrier();
4187                 }
4188                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4189                         cnic_free_irq(dev);
4190                         goto failed;
4191                 }
4192
4193         } else {
4194                 struct status_block *sblk = cp->status_blk.gen;
4195                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4196                 int i = 0;
4197
4198                 while (sblk->status_completion_producer_index && i < 10) {
4199                         CNIC_WR(dev, BNX2_HC_COMMAND,
4200                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4201                         udelay(10);
4202                         i++;
4203                         barrier();
4204                 }
4205                 if (sblk->status_completion_producer_index)
4206                         goto failed;
4207
4208         }
4209         return 0;
4210
4211 failed:
4212         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4213         return -EBUSY;
4214 }
4215
4216 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4217 {
4218         struct cnic_local *cp = dev->cnic_priv;
4219         struct cnic_eth_dev *ethdev = cp->ethdev;
4220
4221         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4222                 return;
4223
4224         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4225                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4226 }
4227
4228 static void cnic_get_bnx2_iscsi_info(struct cnic_dev *dev)
4229 {
4230         u32 max_conn;
4231
4232         max_conn = cnic_reg_rd_ind(dev, BNX2_FW_MAX_ISCSI_CONN);
4233         dev->max_iscsi_conn = max_conn;
4234 }
4235
4236 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4237 {
4238         struct cnic_local *cp = dev->cnic_priv;
4239         struct cnic_eth_dev *ethdev = cp->ethdev;
4240
4241         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4242                 return;
4243
4244         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4245                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4246         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4247         synchronize_irq(ethdev->irq_arr[0].vector);
4248 }
4249
4250 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4251 {
4252         struct cnic_local *cp = dev->cnic_priv;
4253         struct cnic_eth_dev *ethdev = cp->ethdev;
4254         struct cnic_uio_dev *udev = cp->udev;
4255         u32 cid_addr, tx_cid, sb_id;
4256         u32 val, offset0, offset1, offset2, offset3;
4257         int i;
4258         struct tx_bd *txbd;
4259         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4260         struct status_block *s_blk = cp->status_blk.gen;
4261
4262         sb_id = cp->status_blk_num;
4263         tx_cid = 20;
4264         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4265         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4266                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4267
4268                 tx_cid = TX_TSS_CID + sb_id - 1;
4269                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4270                         (TX_TSS_CID << 7));
4271                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4272         }
4273         cp->tx_cons = *cp->tx_cons_ptr;
4274
4275         cid_addr = GET_CID_ADDR(tx_cid);
4276         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
4277                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4278
4279                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4280                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4281
4282                 offset0 = BNX2_L2CTX_TYPE_XI;
4283                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4284                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4285                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4286         } else {
4287                 cnic_init_context(dev, tx_cid);
4288                 cnic_init_context(dev, tx_cid + 1);
4289
4290                 offset0 = BNX2_L2CTX_TYPE;
4291                 offset1 = BNX2_L2CTX_CMD_TYPE;
4292                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4293                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4294         }
4295         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4296         cnic_ctx_wr(dev, cid_addr, offset0, val);
4297
4298         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4299         cnic_ctx_wr(dev, cid_addr, offset1, val);
4300
4301         txbd = (struct tx_bd *) udev->l2_ring;
4302
4303         buf_map = udev->l2_buf_map;
4304         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
4305                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4306                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4307         }
4308         val = (u64) ring_map >> 32;
4309         cnic_ctx_wr(dev, cid_addr, offset2, val);
4310         txbd->tx_bd_haddr_hi = val;
4311
4312         val = (u64) ring_map & 0xffffffff;
4313         cnic_ctx_wr(dev, cid_addr, offset3, val);
4314         txbd->tx_bd_haddr_lo = val;
4315 }
4316
4317 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4318 {
4319         struct cnic_local *cp = dev->cnic_priv;
4320         struct cnic_eth_dev *ethdev = cp->ethdev;
4321         struct cnic_uio_dev *udev = cp->udev;
4322         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4323         int i;
4324         struct rx_bd *rxbd;
4325         struct status_block *s_blk = cp->status_blk.gen;
4326         dma_addr_t ring_map = udev->l2_ring_map;
4327
4328         sb_id = cp->status_blk_num;
4329         cnic_init_context(dev, 2);
4330         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4331         coal_reg = BNX2_HC_COMMAND;
4332         coal_val = CNIC_RD(dev, coal_reg);
4333         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4334                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4335
4336                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4337                 coal_reg = BNX2_HC_COALESCE_NOW;
4338                 coal_val = 1 << (11 + sb_id);
4339         }
4340         i = 0;
4341         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4342                 CNIC_WR(dev, coal_reg, coal_val);
4343                 udelay(10);
4344                 i++;
4345                 barrier();
4346         }
4347         cp->rx_cons = *cp->rx_cons_ptr;
4348
4349         cid_addr = GET_CID_ADDR(2);
4350         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4351               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4352         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4353
4354         if (sb_id == 0)
4355                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4356         else
4357                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4358         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4359
4360         rxbd = (struct rx_bd *) (udev->l2_ring + BCM_PAGE_SIZE);
4361         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
4362                 dma_addr_t buf_map;
4363                 int n = (i % cp->l2_rx_ring_size) + 1;
4364
4365                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4366                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4367                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4368                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4369                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4370         }
4371         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4372         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4373         rxbd->rx_bd_haddr_hi = val;
4374
4375         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4376         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4377         rxbd->rx_bd_haddr_lo = val;
4378
4379         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4380         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4381 }
4382
4383 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4384 {
4385         struct kwqe *wqes[1], l2kwqe;
4386
4387         memset(&l2kwqe, 0, sizeof(l2kwqe));
4388         wqes[0] = &l2kwqe;
4389         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4390                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4391                                KWQE_OPCODE_SHIFT) | 2;
4392         dev->submit_kwqes(dev, wqes, 1);
4393 }
4394
4395 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4396 {
4397         struct cnic_local *cp = dev->cnic_priv;
4398         u32 val;
4399
4400         val = cp->func << 2;
4401
4402         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4403
4404         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4405                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4406         dev->mac_addr[0] = (u8) (val >> 8);
4407         dev->mac_addr[1] = (u8) val;
4408
4409         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4410
4411         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4412                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4413         dev->mac_addr[2] = (u8) (val >> 24);
4414         dev->mac_addr[3] = (u8) (val >> 16);
4415         dev->mac_addr[4] = (u8) (val >> 8);
4416         dev->mac_addr[5] = (u8) val;
4417
4418         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4419
4420         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4421         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4422                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4423
4424         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4425         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4426         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4427 }
4428
4429 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4430 {
4431         struct cnic_local *cp = dev->cnic_priv;
4432         struct cnic_eth_dev *ethdev = cp->ethdev;
4433         struct status_block *sblk = cp->status_blk.gen;
4434         u32 val, kcq_cid_addr, kwq_cid_addr;
4435         int err;
4436
4437         cnic_set_bnx2_mac(dev);
4438
4439         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4440         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4441         if (BCM_PAGE_BITS > 12)
4442                 val |= (12 - 8)  << 4;
4443         else
4444                 val |= (BCM_PAGE_BITS - 8)  << 4;
4445
4446         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4447
4448         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4449         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4450         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4451
4452         err = cnic_setup_5709_context(dev, 1);
4453         if (err)
4454                 return err;
4455
4456         cnic_init_context(dev, KWQ_CID);
4457         cnic_init_context(dev, KCQ_CID);
4458
4459         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4460         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4461
4462         cp->max_kwq_idx = MAX_KWQ_IDX;
4463         cp->kwq_prod_idx = 0;
4464         cp->kwq_con_idx = 0;
4465         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4466
4467         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
4468                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4469         else
4470                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4471
4472         /* Initialize the kernel work queue context. */
4473         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4474               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4475         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4476
4477         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4478         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4479
4480         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4481         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4482
4483         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4484         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4485
4486         val = (u32) cp->kwq_info.pgtbl_map;
4487         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4488
4489         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4490         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4491
4492         cp->kcq1.sw_prod_idx = 0;
4493         cp->kcq1.hw_prod_idx_ptr =
4494                 (u16 *) &sblk->status_completion_producer_index;
4495
4496         cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
4497
4498         /* Initialize the kernel complete queue context. */
4499         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4500               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4501         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4502
4503         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4504         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4505
4506         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4507         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4508
4509         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4510         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4511
4512         val = (u32) cp->kcq1.dma.pgtbl_map;
4513         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4514
4515         cp->int_num = 0;
4516         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4517                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4518                 u32 sb_id = cp->status_blk_num;
4519                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4520
4521                 cp->kcq1.hw_prod_idx_ptr =
4522                         (u16 *) &msblk->status_completion_producer_index;
4523                 cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
4524                 cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
4525                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4526                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4527                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4528         }
4529
4530         /* Enable Commnad Scheduler notification when we write to the
4531          * host producer index of the kernel contexts. */
4532         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4533
4534         /* Enable Command Scheduler notification when we write to either
4535          * the Send Queue or Receive Queue producer indexes of the kernel
4536          * bypass contexts. */
4537         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4538         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4539
4540         /* Notify COM when the driver post an application buffer. */
4541         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4542
4543         /* Set the CP and COM doorbells.  These two processors polls the
4544          * doorbell for a non zero value before running.  This must be done
4545          * after setting up the kernel queue contexts. */
4546         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4547         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4548
4549         cnic_init_bnx2_tx_ring(dev);
4550         cnic_init_bnx2_rx_ring(dev);
4551
4552         err = cnic_init_bnx2_irq(dev);
4553         if (err) {
4554                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4555                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4556                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4557                 return err;
4558         }
4559
4560         cnic_get_bnx2_iscsi_info(dev);
4561
4562         return 0;
4563 }
4564
4565 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4566 {
4567         struct cnic_local *cp = dev->cnic_priv;
4568         struct cnic_eth_dev *ethdev = cp->ethdev;
4569         u32 start_offset = ethdev->ctx_tbl_offset;
4570         int i;
4571
4572         for (i = 0; i < cp->ctx_blks; i++) {
4573                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4574                 dma_addr_t map = ctx->mapping;
4575
4576                 if (cp->ctx_align) {
4577                         unsigned long mask = cp->ctx_align - 1;
4578
4579                         map = (map + mask) & ~mask;
4580                 }
4581
4582                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4583         }
4584 }
4585
4586 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4587 {
4588         struct cnic_local *cp = dev->cnic_priv;
4589         struct cnic_eth_dev *ethdev = cp->ethdev;
4590         int err = 0;
4591
4592         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4593                      (unsigned long) dev);
4594         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4595                 err = cnic_request_irq(dev);
4596
4597         return err;
4598 }
4599
4600 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4601                                                 u16 sb_id, u8 sb_index,
4602                                                 u8 disable)
4603 {
4604
4605         u32 addr = BAR_CSTRORM_INTMEM +
4606                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4607                         offsetof(struct hc_status_block_data_e1x, index_data) +
4608                         sizeof(struct hc_index_data)*sb_index +
4609                         offsetof(struct hc_index_data, flags);
4610         u16 flags = CNIC_RD16(dev, addr);
4611         /* clear and set */
4612         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4613         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4614                   HC_INDEX_DATA_HC_ENABLED);
4615         CNIC_WR16(dev, addr, flags);
4616 }
4617
4618 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4619 {
4620         struct cnic_local *cp = dev->cnic_priv;
4621         u8 sb_id = cp->status_blk_num;
4622
4623         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4624                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4625                         offsetof(struct hc_status_block_data_e1x, index_data) +
4626                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4627                         offsetof(struct hc_index_data, timeout), 64 / 12);
4628         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4629 }
4630
4631 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4632 {
4633 }
4634
4635 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4636                                     struct client_init_ramrod_data *data)
4637 {
4638         struct cnic_local *cp = dev->cnic_priv;
4639         struct cnic_uio_dev *udev = cp->udev;
4640         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4641         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4642         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4643         int port = CNIC_PORT(cp);
4644         int i;
4645         u32 cli = cp->ethdev->iscsi_l2_client_id;
4646         u32 val;
4647
4648         memset(txbd, 0, BCM_PAGE_SIZE);
4649
4650         buf_map = udev->l2_buf_map;
4651         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4652                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4653                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4654
4655                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4656                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4657                 reg_bd->addr_hi = start_bd->addr_hi;
4658                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4659                 start_bd->nbytes = cpu_to_le16(0x10);
4660                 start_bd->nbd = cpu_to_le16(3);
4661                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4662                 start_bd->general_data = (UNICAST_ADDRESS <<
4663                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
4664                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4665
4666         }
4667
4668         val = (u64) ring_map >> 32;
4669         txbd->next_bd.addr_hi = cpu_to_le32(val);
4670
4671         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4672
4673         val = (u64) ring_map & 0xffffffff;
4674         txbd->next_bd.addr_lo = cpu_to_le32(val);
4675
4676         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4677
4678         /* Other ramrod params */
4679         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4680         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4681
4682         /* reset xstorm per client statistics */
4683         if (cli < MAX_STAT_COUNTER_ID) {
4684                 val = BAR_XSTRORM_INTMEM +
4685                       XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4686                 for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
4687                         CNIC_WR(dev, val + i * 4, 0);
4688         }
4689
4690         cp->tx_cons_ptr =
4691                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4692 }
4693
4694 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4695                                     struct client_init_ramrod_data *data)
4696 {
4697         struct cnic_local *cp = dev->cnic_priv;
4698         struct cnic_uio_dev *udev = cp->udev;
4699         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4700                                 BCM_PAGE_SIZE);
4701         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4702                                 (udev->l2_ring + (2 * BCM_PAGE_SIZE));
4703         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4704         int i;
4705         int port = CNIC_PORT(cp);
4706         u32 cli = cp->ethdev->iscsi_l2_client_id;
4707         int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4708         u32 val;
4709         dma_addr_t ring_map = udev->l2_ring_map;
4710
4711         /* General data */
4712         data->general.client_id = cli;
4713         data->general.statistics_en_flg = 1;
4714         data->general.statistics_counter_id = cli;
4715         data->general.activate_flg = 1;
4716         data->general.sp_client_id = cli;
4717
4718         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4719                 dma_addr_t buf_map;
4720                 int n = (i % cp->l2_rx_ring_size) + 1;
4721
4722                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4723                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4724                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4725         }
4726
4727         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4728         rxbd->addr_hi = cpu_to_le32(val);
4729         data->rx.bd_page_base.hi = cpu_to_le32(val);
4730
4731         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4732         rxbd->addr_lo = cpu_to_le32(val);
4733         data->rx.bd_page_base.lo = cpu_to_le32(val);
4734
4735         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4736         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4737         rxcqe->addr_hi = cpu_to_le32(val);
4738         data->rx.cqe_page_base.hi = cpu_to_le32(val);
4739
4740         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4741         rxcqe->addr_lo = cpu_to_le32(val);
4742         data->rx.cqe_page_base.lo = cpu_to_le32(val);
4743
4744         /* Other ramrod params */
4745         data->rx.client_qzone_id = cl_qzone_id;
4746         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
4747         data->rx.status_block_id = BNX2X_DEF_SB_ID;
4748
4749         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4750         data->rx.bd_buff_size = cpu_to_le16(cp->l2_single_buf_size);
4751
4752         data->rx.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4753         data->rx.outer_vlan_removal_enable_flg = 1;
4754
4755         /* reset tstorm and ustorm per client statistics */
4756         if (cli < MAX_STAT_COUNTER_ID) {
4757                 val = BAR_TSTRORM_INTMEM +
4758                       TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4759                 for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
4760                         CNIC_WR(dev, val + i * 4, 0);
4761
4762                 val = BAR_USTRORM_INTMEM +
4763                       USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4764                 for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
4765                         CNIC_WR(dev, val + i * 4, 0);
4766         }
4767
4768         cp->rx_cons_ptr =
4769                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4770         cp->rx_cons = *cp->rx_cons_ptr;
4771 }
4772
4773 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
4774 {
4775         struct cnic_local *cp = dev->cnic_priv;
4776         u32 pfid = cp->pfid;
4777
4778         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4779                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4780         cp->kcq1.sw_prod_idx = 0;
4781
4782         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4783                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4784
4785                 cp->kcq1.hw_prod_idx_ptr =
4786                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4787                 cp->kcq1.status_idx_ptr =
4788                         &sb->sb.running_index[SM_RX_ID];
4789         } else {
4790                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
4791
4792                 cp->kcq1.hw_prod_idx_ptr =
4793                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4794                 cp->kcq1.status_idx_ptr =
4795                         &sb->sb.running_index[SM_RX_ID];
4796         }
4797
4798         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4799                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4800
4801                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
4802                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
4803                 cp->kcq2.sw_prod_idx = 0;
4804                 cp->kcq2.hw_prod_idx_ptr =
4805                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
4806                 cp->kcq2.status_idx_ptr =
4807                         &sb->sb.running_index[SM_RX_ID];
4808         }
4809 }
4810
4811 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4812 {
4813         struct cnic_local *cp = dev->cnic_priv;
4814         struct cnic_eth_dev *ethdev = cp->ethdev;
4815         int func = CNIC_FUNC(cp), ret, i;
4816         u32 pfid;
4817
4818         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4819                 u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);
4820
4821                 if (!(val & 1))
4822                         val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN);
4823                 else
4824                         val = (val >> 1) & 1;
4825
4826                 if (val)
4827                         cp->pfid = func >> 1;
4828                 else
4829                         cp->pfid = func & 0x6;
4830         } else {
4831                 cp->pfid = func;
4832         }
4833         pfid = cp->pfid;
4834
4835         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4836                                cp->iscsi_start_cid, 0);
4837
4838         if (ret)
4839                 return -ENOMEM;
4840
4841         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4842                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl,
4843                                         BNX2X_FCOE_NUM_CONNECTIONS,
4844                                         cp->fcoe_start_cid, 0);
4845
4846                 if (ret)
4847                         return -ENOMEM;
4848         }
4849
4850         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
4851
4852         cnic_init_bnx2x_kcq(dev);
4853
4854         /* Only 1 EQ */
4855         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
4856         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4857                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
4858         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4859                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
4860                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
4861         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4862                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
4863                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
4864         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4865                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
4866                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
4867         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4868                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
4869                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
4870         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4871                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
4872         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4873                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
4874         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4875                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
4876                 HC_INDEX_ISCSI_EQ_CONS);
4877
4878         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4879                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4880                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i),
4881                         cp->conn_buf_info.pgtbl[2 * i]);
4882                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4883                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i) + 4,
4884                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4885         }
4886
4887         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4888                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
4889                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4890         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4891                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
4892                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4893
4894         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4895                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
4896
4897         cnic_setup_bnx2x_context(dev);
4898
4899         ret = cnic_init_bnx2x_irq(dev);
4900         if (ret)
4901                 return ret;
4902
4903         return 0;
4904 }
4905
4906 static void cnic_init_rings(struct cnic_dev *dev)
4907 {
4908         struct cnic_local *cp = dev->cnic_priv;
4909         struct cnic_uio_dev *udev = cp->udev;
4910
4911         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4912                 return;
4913
4914         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4915                 cnic_init_bnx2_tx_ring(dev);
4916                 cnic_init_bnx2_rx_ring(dev);
4917                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4918         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4919                 u32 cli = cp->ethdev->iscsi_l2_client_id;
4920                 u32 cid = cp->ethdev->iscsi_l2_cid;
4921                 u32 cl_qzone_id;
4922                 struct client_init_ramrod_data *data;
4923                 union l5cm_specific_data l5_data;
4924                 struct ustorm_eth_rx_producers rx_prods = {0};
4925                 u32 off, i;
4926
4927                 rx_prods.bd_prod = 0;
4928                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4929                 barrier();
4930
4931                 cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4932
4933                 off = BAR_USTRORM_INTMEM +
4934                         (BNX2X_CHIP_IS_E2(cp->chip_id) ?
4935                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
4936                          USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
4937
4938                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4939                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4940
4941                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4942
4943                 data = udev->l2_buf;
4944
4945                 memset(data, 0, sizeof(*data));
4946
4947                 cnic_init_bnx2x_tx_ring(dev, data);
4948                 cnic_init_bnx2x_rx_ring(dev, data);
4949
4950                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
4951                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
4952
4953                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4954
4955                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4956                         cid, ETH_CONNECTION_TYPE, &l5_data);
4957
4958                 i = 0;
4959                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4960                        ++i < 10)
4961                         msleep(1);
4962
4963                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4964                         netdev_err(dev->netdev,
4965                                 "iSCSI CLIENT_SETUP did not complete\n");
4966                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4967                 cnic_ring_ctl(dev, cid, cli, 1);
4968         }
4969 }
4970
4971 static void cnic_shutdown_rings(struct cnic_dev *dev)
4972 {
4973         struct cnic_local *cp = dev->cnic_priv;
4974
4975         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4976                 return;
4977
4978         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4979                 cnic_shutdown_bnx2_rx_ring(dev);
4980         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4981                 struct cnic_local *cp = dev->cnic_priv;
4982                 u32 cli = cp->ethdev->iscsi_l2_client_id;
4983                 u32 cid = cp->ethdev->iscsi_l2_cid;
4984                 union l5cm_specific_data l5_data;
4985                 int i;
4986
4987                 cnic_ring_ctl(dev, cid, cli, 0);
4988
4989                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4990
4991                 l5_data.phy_address.lo = cli;
4992                 l5_data.phy_address.hi = 0;
4993                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4994                         cid, ETH_CONNECTION_TYPE, &l5_data);
4995                 i = 0;
4996                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4997                        ++i < 10)
4998                         msleep(1);
4999
5000                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5001                         netdev_err(dev->netdev,
5002                                 "iSCSI CLIENT_HALT did not complete\n");
5003                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5004
5005                 memset(&l5_data, 0, sizeof(l5_data));
5006                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5007                         cid, NONE_CONNECTION_TYPE, &l5_data);
5008                 msleep(10);
5009         }
5010         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5011 }
5012
5013 static int cnic_register_netdev(struct cnic_dev *dev)
5014 {
5015         struct cnic_local *cp = dev->cnic_priv;
5016         struct cnic_eth_dev *ethdev = cp->ethdev;
5017         int err;
5018
5019         if (!ethdev)
5020                 return -ENODEV;
5021
5022         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5023                 return 0;
5024
5025         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5026         if (err)
5027                 netdev_err(dev->netdev, "register_cnic failed\n");
5028
5029         return err;
5030 }
5031
5032 static void cnic_unregister_netdev(struct cnic_dev *dev)
5033 {
5034         struct cnic_local *cp = dev->cnic_priv;
5035         struct cnic_eth_dev *ethdev = cp->ethdev;
5036
5037         if (!ethdev)
5038                 return;
5039
5040         ethdev->drv_unregister_cnic(dev->netdev);
5041 }
5042
5043 static int cnic_start_hw(struct cnic_dev *dev)
5044 {
5045         struct cnic_local *cp = dev->cnic_priv;
5046         struct cnic_eth_dev *ethdev = cp->ethdev;
5047         int err;
5048
5049         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5050                 return -EALREADY;
5051
5052         dev->regview = ethdev->io_base;
5053         pci_dev_get(dev->pcidev);
5054         cp->func = PCI_FUNC(dev->pcidev->devfn);
5055         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5056         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5057
5058         err = cp->alloc_resc(dev);
5059         if (err) {
5060                 netdev_err(dev->netdev, "allocate resource failure\n");
5061                 goto err1;
5062         }
5063
5064         err = cp->start_hw(dev);
5065         if (err)
5066                 goto err1;
5067
5068         err = cnic_cm_open(dev);
5069         if (err)
5070                 goto err1;
5071
5072         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5073
5074         cp->enable_int(dev);
5075
5076         return 0;
5077
5078 err1:
5079         cp->free_resc(dev);
5080         pci_dev_put(dev->pcidev);
5081         return err;
5082 }
5083
5084 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5085 {
5086         cnic_disable_bnx2_int_sync(dev);
5087
5088         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5089         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5090
5091         cnic_init_context(dev, KWQ_CID);
5092         cnic_init_context(dev, KCQ_CID);
5093
5094         cnic_setup_5709_context(dev, 0);
5095         cnic_free_irq(dev);
5096
5097         cnic_free_resc(dev);
5098 }
5099
5100
5101 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5102 {
5103         struct cnic_local *cp = dev->cnic_priv;
5104
5105         cnic_free_irq(dev);
5106         *cp->kcq1.hw_prod_idx_ptr = 0;
5107         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5108                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5109         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5110         cnic_free_resc(dev);
5111 }
5112
5113 static void cnic_stop_hw(struct cnic_dev *dev)
5114 {
5115         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5116                 struct cnic_local *cp = dev->cnic_priv;
5117                 int i = 0;
5118
5119                 /* Need to wait for the ring shutdown event to complete
5120                  * before clearing the CNIC_UP flag.
5121                  */
5122                 while (cp->udev->uio_dev != -1 && i < 15) {
5123                         msleep(100);
5124                         i++;
5125                 }
5126                 cnic_shutdown_rings(dev);
5127                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5128                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
5129                 synchronize_rcu();
5130                 cnic_cm_shutdown(dev);
5131                 cp->stop_hw(dev);
5132                 pci_dev_put(dev->pcidev);
5133         }
5134 }
5135
5136 static void cnic_free_dev(struct cnic_dev *dev)
5137 {
5138         int i = 0;
5139
5140         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5141                 msleep(100);
5142                 i++;
5143         }
5144         if (atomic_read(&dev->ref_count) != 0)
5145                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5146
5147         netdev_info(dev->netdev, "Removed CNIC device\n");
5148         dev_put(dev->netdev);
5149         kfree(dev);
5150 }
5151
5152 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5153                                        struct pci_dev *pdev)
5154 {
5155         struct cnic_dev *cdev;
5156         struct cnic_local *cp;
5157         int alloc_size;
5158
5159         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5160
5161         cdev = kzalloc(alloc_size , GFP_KERNEL);
5162         if (cdev == NULL) {
5163                 netdev_err(dev, "allocate dev struct failure\n");
5164                 return NULL;
5165         }
5166
5167         cdev->netdev = dev;
5168         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5169         cdev->register_device = cnic_register_device;
5170         cdev->unregister_device = cnic_unregister_device;
5171         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5172
5173         cp = cdev->cnic_priv;
5174         cp->dev = cdev;
5175         cp->l2_single_buf_size = 0x400;
5176         cp->l2_rx_ring_size = 3;
5177
5178         spin_lock_init(&cp->cnic_ulp_lock);
5179
5180         netdev_info(dev, "Added CNIC device\n");
5181
5182         return cdev;
5183 }
5184
5185 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5186 {
5187         struct pci_dev *pdev;
5188         struct cnic_dev *cdev;
5189         struct cnic_local *cp;
5190         struct cnic_eth_dev *ethdev = NULL;
5191         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5192
5193         probe = symbol_get(bnx2_cnic_probe);
5194         if (probe) {
5195                 ethdev = (*probe)(dev);
5196                 symbol_put(bnx2_cnic_probe);
5197         }
5198         if (!ethdev)
5199                 return NULL;
5200
5201         pdev = ethdev->pdev;
5202         if (!pdev)
5203                 return NULL;
5204
5205         dev_hold(dev);
5206         pci_dev_get(pdev);
5207         if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5208              pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5209             (pdev->revision < 0x10)) {
5210                 pci_dev_put(pdev);
5211                 goto cnic_err;
5212         }
5213         pci_dev_put(pdev);
5214
5215         cdev = cnic_alloc_dev(dev, pdev);
5216         if (cdev == NULL)
5217                 goto cnic_err;
5218
5219         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5220         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5221
5222         cp = cdev->cnic_priv;
5223         cp->ethdev = ethdev;
5224         cdev->pcidev = pdev;
5225         cp->chip_id = ethdev->chip_id;
5226
5227         cp->cnic_ops = &cnic_bnx2_ops;
5228         cp->start_hw = cnic_start_bnx2_hw;
5229         cp->stop_hw = cnic_stop_bnx2_hw;
5230         cp->setup_pgtbl = cnic_setup_page_tbl;
5231         cp->alloc_resc = cnic_alloc_bnx2_resc;
5232         cp->free_resc = cnic_free_resc;
5233         cp->start_cm = cnic_cm_init_bnx2_hw;
5234         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5235         cp->enable_int = cnic_enable_bnx2_int;
5236         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5237         cp->close_conn = cnic_close_bnx2_conn;
5238         cp->next_idx = cnic_bnx2_next_idx;
5239         cp->hw_idx = cnic_bnx2_hw_idx;
5240         return cdev;
5241
5242 cnic_err:
5243         dev_put(dev);
5244         return NULL;
5245 }
5246
5247 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5248 {
5249         struct pci_dev *pdev;
5250         struct cnic_dev *cdev;
5251         struct cnic_local *cp;
5252         struct cnic_eth_dev *ethdev = NULL;
5253         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5254
5255         probe = symbol_get(bnx2x_cnic_probe);
5256         if (probe) {
5257                 ethdev = (*probe)(dev);
5258                 symbol_put(bnx2x_cnic_probe);
5259         }
5260         if (!ethdev)
5261                 return NULL;
5262
5263         pdev = ethdev->pdev;
5264         if (!pdev)
5265                 return NULL;
5266
5267         dev_hold(dev);
5268         cdev = cnic_alloc_dev(dev, pdev);
5269         if (cdev == NULL) {
5270                 dev_put(dev);
5271                 return NULL;
5272         }
5273
5274         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5275         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5276
5277         cp = cdev->cnic_priv;
5278         cp->ethdev = ethdev;
5279         cdev->pcidev = pdev;
5280         cp->chip_id = ethdev->chip_id;
5281
5282         if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5283                 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5284         if (BNX2X_CHIP_IS_E2(cp->chip_id) &&
5285             !(ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE))
5286                 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5287
5288         memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);
5289
5290         cp->cnic_ops = &cnic_bnx2x_ops;
5291         cp->start_hw = cnic_start_bnx2x_hw;
5292         cp->stop_hw = cnic_stop_bnx2x_hw;
5293         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5294         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5295         cp->free_resc = cnic_free_resc;
5296         cp->start_cm = cnic_cm_init_bnx2x_hw;
5297         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5298         cp->enable_int = cnic_enable_bnx2x_int;
5299         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5300         if (BNX2X_CHIP_IS_E2(cp->chip_id))
5301                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5302         else
5303                 cp->ack_int = cnic_ack_bnx2x_msix;
5304         cp->close_conn = cnic_close_bnx2x_conn;
5305         cp->next_idx = cnic_bnx2x_next_idx;
5306         cp->hw_idx = cnic_bnx2x_hw_idx;
5307         return cdev;
5308 }
5309
5310 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5311 {
5312         struct ethtool_drvinfo drvinfo;
5313         struct cnic_dev *cdev = NULL;
5314
5315         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5316                 memset(&drvinfo, 0, sizeof(drvinfo));
5317                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5318
5319                 if (!strcmp(drvinfo.driver, "bnx2"))
5320                         cdev = init_bnx2_cnic(dev);
5321                 if (!strcmp(drvinfo.driver, "bnx2x"))
5322                         cdev = init_bnx2x_cnic(dev);
5323                 if (cdev) {
5324                         write_lock(&cnic_dev_lock);
5325                         list_add(&cdev->list, &cnic_dev_list);
5326                         write_unlock(&cnic_dev_lock);
5327                 }
5328         }
5329         return cdev;
5330 }
5331
5332 /**
5333  * netdev event handler
5334  */
5335 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5336                                                          void *ptr)
5337 {
5338         struct net_device *netdev = ptr;
5339         struct cnic_dev *dev;
5340         int if_type;
5341         int new_dev = 0;
5342
5343         dev = cnic_from_netdev(netdev);
5344
5345         if (!dev && (event == NETDEV_REGISTER || netif_running(netdev))) {
5346                 /* Check for the hot-plug device */
5347                 dev = is_cnic_dev(netdev);
5348                 if (dev) {
5349                         new_dev = 1;
5350                         cnic_hold(dev);
5351                 }
5352         }
5353         if (dev) {
5354                 struct cnic_local *cp = dev->cnic_priv;
5355
5356                 if (new_dev)
5357                         cnic_ulp_init(dev);
5358                 else if (event == NETDEV_UNREGISTER)
5359                         cnic_ulp_exit(dev);
5360
5361                 if (event == NETDEV_UP || (new_dev && netif_running(netdev))) {
5362                         if (cnic_register_netdev(dev) != 0) {
5363                                 cnic_put(dev);
5364                                 goto done;
5365                         }
5366                         if (!cnic_start_hw(dev))
5367                                 cnic_ulp_start(dev);
5368                 }
5369
5370                 rcu_read_lock();
5371                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5372                         struct cnic_ulp_ops *ulp_ops;
5373                         void *ctx;
5374
5375                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
5376                         if (!ulp_ops || !ulp_ops->indicate_netevent)
5377                                 continue;
5378
5379                         ctx = cp->ulp_handle[if_type];
5380
5381                         ulp_ops->indicate_netevent(ctx, event);
5382                 }
5383                 rcu_read_unlock();
5384
5385                 if (event == NETDEV_GOING_DOWN) {
5386                         cnic_ulp_stop(dev);
5387                         cnic_stop_hw(dev);
5388                         cnic_unregister_netdev(dev);
5389                 } else if (event == NETDEV_UNREGISTER) {
5390                         write_lock(&cnic_dev_lock);
5391                         list_del_init(&dev->list);
5392                         write_unlock(&cnic_dev_lock);
5393
5394                         cnic_put(dev);
5395                         cnic_free_dev(dev);
5396                         goto done;
5397                 }
5398                 cnic_put(dev);
5399         }
5400 done:
5401         return NOTIFY_DONE;
5402 }
5403
5404 static struct notifier_block cnic_netdev_notifier = {
5405         .notifier_call = cnic_netdev_event
5406 };
5407
5408 static void cnic_release(void)
5409 {
5410         struct cnic_dev *dev;
5411         struct cnic_uio_dev *udev;
5412
5413         while (!list_empty(&cnic_dev_list)) {
5414                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
5415                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5416                         cnic_ulp_stop(dev);
5417                         cnic_stop_hw(dev);
5418                 }
5419
5420                 cnic_ulp_exit(dev);
5421                 cnic_unregister_netdev(dev);
5422                 list_del_init(&dev->list);
5423                 cnic_free_dev(dev);
5424         }
5425         while (!list_empty(&cnic_udev_list)) {
5426                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5427                                   list);
5428                 cnic_free_uio(udev);
5429         }
5430 }
5431
5432 static int __init cnic_init(void)
5433 {
5434         int rc = 0;
5435
5436         pr_info("%s", version);
5437
5438         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5439         if (rc) {
5440                 cnic_release();
5441                 return rc;
5442         }
5443
5444         cnic_wq = create_singlethread_workqueue("cnic_wq");
5445         if (!cnic_wq) {
5446                 cnic_release();
5447                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5448                 return -ENOMEM;
5449         }
5450
5451         return 0;
5452 }
5453
5454 static void __exit cnic_exit(void)
5455 {
5456         unregister_netdevice_notifier(&cnic_netdev_notifier);
5457         cnic_release();
5458         destroy_workqueue(cnic_wq);
5459 }
5460
5461 module_init(cnic_init);
5462 module_exit(cnic_exit);