drivers/net/cnic.c

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