SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/cnic.c

   1 /* cnic.c: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2009 Broadcom Corporation
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation.
   8  *
   9  * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
  10  * Modified and maintained by: Michael Chan <mchan@broadcom.com>
  11  */
  12
  13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  14
  15 #include <linux/module.h>
  16
  17 #include <linux/kernel.h>
  18 #include <linux/errno.h>
  19 #include <linux/list.h>
  20 #include <linux/slab.h>
  21 #include <linux/pci.h>
  22 #include <linux/init.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/uio_driver.h>
  25 #include <linux/in.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/delay.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_vlan.h>
  30 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
  31 #define BCM_VLAN 1
  32 #endif
  33 #include <net/ip.h>
  34 #include <net/tcp.h>
  35 #include <net/route.h>
  36 #include <net/ipv6.h>
  37 #include <net/ip6_route.h>
  38 #include <net/ip6_checksum.h>
  39 #include <scsi/iscsi_if.h>
  40
  41 #include "cnic_if.h"
  42 #include "bnx2.h"
  43 #include "bnx2x_reg.h"
  44 #include "bnx2x_fw_defs.h"
  45 #include "bnx2x_hsi.h"
  46 #include "../scsi/bnx2i/57xx_iscsi_constants.h"
  47 #include "../scsi/bnx2i/57xx_iscsi_hsi.h"
  48 #include "cnic.h"
  49 #include "cnic_defs.h"
  50
  51 #define DRV_MODULE_NAME         "cnic"
  52
  53 static char version[] __devinitdata =
  54         "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  55
  56 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  57               "Chen (zongxi@broadcom.com");
  58 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
  59 MODULE_LICENSE("GPL");
  60 MODULE_VERSION(CNIC_MODULE_VERSION);
  61
  62 static LIST_HEAD(cnic_dev_list);
  63 static DEFINE_RWLOCK(cnic_dev_lock);
  64 static DEFINE_MUTEX(cnic_lock);
  65
  66 static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  67
  68 static int cnic_service_bnx2(void *, void *);
  69 static int cnic_service_bnx2x(void *, void *);
  70 static int cnic_ctl(void *, struct cnic_ctl_info *);
  71
  72 static struct cnic_ops cnic_bnx2_ops = {
  73         .cnic_owner     = THIS_MODULE,
  74         .cnic_handler   = cnic_service_bnx2,
  75         .cnic_ctl       = cnic_ctl,
  76 };
  77
  78 static struct cnic_ops cnic_bnx2x_ops = {
  79         .cnic_owner     = THIS_MODULE,
  80         .cnic_handler   = cnic_service_bnx2x,
  81         .cnic_ctl       = cnic_ctl,
  82 };
  83
  84 static void cnic_shutdown_rings(struct cnic_dev *);
  85 static void cnic_init_rings(struct cnic_dev *);
  86 static int cnic_cm_set_pg(struct cnic_sock *);
  87
  88 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
  89 {
  90         struct cnic_dev *dev = uinfo->priv;
  91         struct cnic_local *cp = dev->cnic_priv;
  92
  93         if (!capable(CAP_NET_ADMIN))
  94                 return -EPERM;
  95
  96         if (cp->uio_dev != -1)
  97                 return -EBUSY;
  98
  99         rtnl_lock();
 100         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 101                 rtnl_unlock();
 102                 return -ENODEV;
 103         }
 104
 105         cp->uio_dev = iminor(inode);
 106
 107         cnic_init_rings(dev);
 108         rtnl_unlock();
 109
 110         return 0;
 111 }
 112
 113 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 114 {
 115         struct cnic_dev *dev = uinfo->priv;
 116         struct cnic_local *cp = dev->cnic_priv;
 117
 118         cnic_shutdown_rings(dev);
 119
 120         cp->uio_dev = -1;
 121         return 0;
 122 }
 123
 124 static inline void cnic_hold(struct cnic_dev *dev)
 125 {
 126         atomic_inc(&dev->ref_count);
 127 }
 128
 129 static inline void cnic_put(struct cnic_dev *dev)
 130 {
 131         atomic_dec(&dev->ref_count);
 132 }
 133
 134 static inline void csk_hold(struct cnic_sock *csk)
 135 {
 136         atomic_inc(&csk->ref_count);
 137 }
 138
 139 static inline void csk_put(struct cnic_sock *csk)
 140 {
 141         atomic_dec(&csk->ref_count);
 142 }
 143
 144 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 145 {
 146         struct cnic_dev *cdev;
 147
 148         read_lock(&cnic_dev_lock);
 149         list_for_each_entry(cdev, &cnic_dev_list, list) {
 150                 if (netdev == cdev->netdev) {
 151                         cnic_hold(cdev);
 152                         read_unlock(&cnic_dev_lock);
 153                         return cdev;
 154                 }
 155         }
 156         read_unlock(&cnic_dev_lock);
 157         return NULL;
 158 }
 159
 160 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 161 {
 162         atomic_inc(&ulp_ops->ref_count);
 163 }
 164
 165 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 166 {
 167         atomic_dec(&ulp_ops->ref_count);
 168 }
 169
 170 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 171 {
 172         struct cnic_local *cp = dev->cnic_priv;
 173         struct cnic_eth_dev *ethdev = cp->ethdev;
 174         struct drv_ctl_info info;
 175         struct drv_ctl_io *io = &info.data.io;
 176
 177         info.cmd = DRV_CTL_CTX_WR_CMD;
 178         io->cid_addr = cid_addr;
 179         io->offset = off;
 180         io->data = val;
 181         ethdev->drv_ctl(dev->netdev, &info);
 182 }
 183
 184 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 185 {
 186         struct cnic_local *cp = dev->cnic_priv;
 187         struct cnic_eth_dev *ethdev = cp->ethdev;
 188         struct drv_ctl_info info;
 189         struct drv_ctl_io *io = &info.data.io;
 190
 191         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 192         io->offset = off;
 193         io->dma_addr = addr;
 194         ethdev->drv_ctl(dev->netdev, &info);
 195 }
 196
 197 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 198 {
 199         struct cnic_local *cp = dev->cnic_priv;
 200         struct cnic_eth_dev *ethdev = cp->ethdev;
 201         struct drv_ctl_info info;
 202         struct drv_ctl_l2_ring *ring = &info.data.ring;
 203
 204         if (start)
 205                 info.cmd = DRV_CTL_START_L2_CMD;
 206         else
 207                 info.cmd = DRV_CTL_STOP_L2_CMD;
 208
 209         ring->cid = cid;
 210         ring->client_id = cl_id;
 211         ethdev->drv_ctl(dev->netdev, &info);
 212 }
 213
 214 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 215 {
 216         struct cnic_local *cp = dev->cnic_priv;
 217         struct cnic_eth_dev *ethdev = cp->ethdev;
 218         struct drv_ctl_info info;
 219         struct drv_ctl_io *io = &info.data.io;
 220
 221         info.cmd = DRV_CTL_IO_WR_CMD;
 222         io->offset = off;
 223         io->data = val;
 224         ethdev->drv_ctl(dev->netdev, &info);
 225 }
 226
 227 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 228 {
 229         struct cnic_local *cp = dev->cnic_priv;
 230         struct cnic_eth_dev *ethdev = cp->ethdev;
 231         struct drv_ctl_info info;
 232         struct drv_ctl_io *io = &info.data.io;
 233
 234         info.cmd = DRV_CTL_IO_RD_CMD;
 235         io->offset = off;
 236         ethdev->drv_ctl(dev->netdev, &info);
 237         return io->data;
 238 }
 239
 240 static int cnic_in_use(struct cnic_sock *csk)
 241 {
 242         return test_bit(SK_F_INUSE, &csk->flags);
 243 }
 244
 245 static void cnic_kwq_completion(struct cnic_dev *dev, u32 count)
 246 {
 247         struct cnic_local *cp = dev->cnic_priv;
 248         struct cnic_eth_dev *ethdev = cp->ethdev;
 249         struct drv_ctl_info info;
 250
 251         info.cmd = DRV_CTL_COMPLETION_CMD;
 252         info.data.comp.comp_count = count;
 253         ethdev->drv_ctl(dev->netdev, &info);
 254 }
 255
 256 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 257 {
 258         u32 i;
 259
 260         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
 261                 if (cp->ctx_tbl[i].cid == cid) {
 262                         *l5_cid = i;
 263                         return 0;
 264                 }
 265         }
 266         return -EINVAL;
 267 }
 268
 269 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 270                            struct cnic_sock *csk)
 271 {
 272         struct iscsi_path path_req;
 273         char *buf = NULL;
 274         u16 len = 0;
 275         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 276         struct cnic_ulp_ops *ulp_ops;
 277
 278         if (cp->uio_dev == -1)
 279                 return -ENODEV;
 280
 281         if (csk) {
 282                 len = sizeof(path_req);
 283                 buf = (char *) &path_req;
 284                 memset(&path_req, 0, len);
 285
 286                 msg_type = ISCSI_KEVENT_PATH_REQ;
 287                 path_req.handle = (u64) csk->l5_cid;
 288                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 289                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 290                                sizeof(struct in6_addr));
 291                         path_req.ip_addr_len = 16;
 292                 } else {
 293                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 294                                sizeof(struct in_addr));
 295                         path_req.ip_addr_len = 4;
 296                 }
 297                 path_req.vlan_id = csk->vlan_id;
 298                 path_req.pmtu = csk->mtu;
 299         }
 300
 301         rcu_read_lock();
 302         ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
 303         if (ulp_ops)
 304                 ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len);
 305         rcu_read_unlock();
 306         return 0;
 307 }
 308
 309 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 310                                   char *buf, u16 len)
 311 {
 312         int rc = -EINVAL;
 313
 314         switch (msg_type) {
 315         case ISCSI_UEVENT_PATH_UPDATE: {
 316                 struct cnic_local *cp;
 317                 u32 l5_cid;
 318                 struct cnic_sock *csk;
 319                 struct iscsi_path *path_resp;
 320
 321                 if (len < sizeof(*path_resp))
 322                         break;
 323
 324                 path_resp = (struct iscsi_path *) buf;
 325                 cp = dev->cnic_priv;
 326                 l5_cid = (u32) path_resp->handle;
 327                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 328                         break;
 329
 330                 csk = &cp->csk_tbl[l5_cid];
 331                 csk_hold(csk);
 332                 if (cnic_in_use(csk)) {
 333                         memcpy(csk->ha, path_resp->mac_addr, 6);
 334                         if (test_bit(SK_F_IPV6, &csk->flags))
 335                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 336                                        sizeof(struct in6_addr));
 337                         else
 338                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 339                                        sizeof(struct in_addr));
 340                         if (is_valid_ether_addr(csk->ha))
 341                                 cnic_cm_set_pg(csk);
 342                 }
 343                 csk_put(csk);
 344                 rc = 0;
 345         }
 346         }
 347
 348         return rc;
 349 }
 350
 351 static int cnic_offld_prep(struct cnic_sock *csk)
 352 {
 353         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 354                 return 0;
 355
 356         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 357                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 358                 return 0;
 359         }
 360
 361         return 1;
 362 }
 363
 364 static int cnic_close_prep(struct cnic_sock *csk)
 365 {
 366         clear_bit(SK_F_CONNECT_START, &csk->flags);
 367         smp_mb__after_clear_bit();
 368
 369         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 370                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 371                         msleep(1);
 372
 373                 return 1;
 374         }
 375         return 0;
 376 }
 377
 378 static int cnic_abort_prep(struct cnic_sock *csk)
 379 {
 380         clear_bit(SK_F_CONNECT_START, &csk->flags);
 381         smp_mb__after_clear_bit();
 382
 383         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 384                 msleep(1);
 385
 386         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 387                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 388                 return 1;
 389         }
 390
 391         return 0;
 392 }
 393
 394 static void cnic_uio_stop(void)
 395 {
 396         struct cnic_dev *dev;
 397
 398         read_lock(&cnic_dev_lock);
 399         list_for_each_entry(dev, &cnic_dev_list, list) {
 400                 struct cnic_local *cp = dev->cnic_priv;
 401
 402                 if (cp->cnic_uinfo)
 403                         cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 404         }
 405         read_unlock(&cnic_dev_lock);
 406 }
 407
 408 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 409 {
 410         struct cnic_dev *dev;
 411
 412         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 413                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 414                 return -EINVAL;
 415         }
 416         mutex_lock(&cnic_lock);
 417         if (cnic_ulp_tbl[ulp_type]) {
 418                 pr_err("%s: Type %d has already been registered\n",
 419                        __func__, ulp_type);
 420                 mutex_unlock(&cnic_lock);
 421                 return -EBUSY;
 422         }
 423
 424         read_lock(&cnic_dev_lock);
 425         list_for_each_entry(dev, &cnic_dev_list, list) {
 426                 struct cnic_local *cp = dev->cnic_priv;
 427
 428                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 429         }
 430         read_unlock(&cnic_dev_lock);
 431
 432         atomic_set(&ulp_ops->ref_count, 0);
 433         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 434         mutex_unlock(&cnic_lock);
 435
 436         /* Prevent race conditions with netdev_event */
 437         rtnl_lock();
 438         read_lock(&cnic_dev_lock);
 439         list_for_each_entry(dev, &cnic_dev_list, list) {
 440                 struct cnic_local *cp = dev->cnic_priv;
 441
 442                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 443                         ulp_ops->cnic_init(dev);
 444         }
 445         read_unlock(&cnic_dev_lock);
 446         rtnl_unlock();
 447
 448         return 0;
 449 }
 450
 451 int cnic_unregister_driver(int ulp_type)
 452 {
 453         struct cnic_dev *dev;
 454         struct cnic_ulp_ops *ulp_ops;
 455         int i = 0;
 456
 457         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 458                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 459                 return -EINVAL;
 460         }
 461         mutex_lock(&cnic_lock);
 462         ulp_ops = cnic_ulp_tbl[ulp_type];
 463         if (!ulp_ops) {
 464                 pr_err("%s: Type %d has not been registered\n",
 465                        __func__, ulp_type);
 466                 goto out_unlock;
 467         }
 468         read_lock(&cnic_dev_lock);
 469         list_for_each_entry(dev, &cnic_dev_list, list) {
 470                 struct cnic_local *cp = dev->cnic_priv;
 471
 472                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 473                         pr_err("%s: Type %d still has devices registered\n",
 474                                __func__, ulp_type);
 475                         read_unlock(&cnic_dev_lock);
 476                         goto out_unlock;
 477                 }
 478         }
 479         read_unlock(&cnic_dev_lock);
 480
 481         if (ulp_type == CNIC_ULP_ISCSI)
 482                 cnic_uio_stop();
 483
 484         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
 485
 486         mutex_unlock(&cnic_lock);
 487         synchronize_rcu();
 488         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 489                 msleep(100);
 490                 i++;
 491         }
 492
 493         if (atomic_read(&ulp_ops->ref_count) != 0)
 494                 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
 495         return 0;
 496
 497 out_unlock:
 498         mutex_unlock(&cnic_lock);
 499         return -EINVAL;
 500 }
 501
 502 static int cnic_start_hw(struct cnic_dev *);
 503 static void cnic_stop_hw(struct cnic_dev *);
 504
 505 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 506                                 void *ulp_ctx)
 507 {
 508         struct cnic_local *cp = dev->cnic_priv;
 509         struct cnic_ulp_ops *ulp_ops;
 510
 511         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 512                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 513                 return -EINVAL;
 514         }
 515         mutex_lock(&cnic_lock);
 516         if (cnic_ulp_tbl[ulp_type] == NULL) {
 517                 pr_err("%s: Driver with type %d has not been registered\n",
 518                        __func__, ulp_type);
 519                 mutex_unlock(&cnic_lock);
 520                 return -EAGAIN;
 521         }
 522         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 523                 pr_err("%s: Type %d has already been registered to this device\n",
 524                        __func__, ulp_type);
 525                 mutex_unlock(&cnic_lock);
 526                 return -EBUSY;
 527         }
 528
 529         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 530         cp->ulp_handle[ulp_type] = ulp_ctx;
 531         ulp_ops = cnic_ulp_tbl[ulp_type];
 532         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 533         cnic_hold(dev);
 534
 535         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 536                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 537                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 538
 539         mutex_unlock(&cnic_lock);
 540
 541         return 0;
 542
 543 }
 544 EXPORT_SYMBOL(cnic_register_driver);
 545
 546 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 547 {
 548         struct cnic_local *cp = dev->cnic_priv;
 549         int i = 0;
 550
 551         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 552                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 553                 return -EINVAL;
 554         }
 555         mutex_lock(&cnic_lock);
 556         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 557                 rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
 558                 cnic_put(dev);
 559         } else {
 560                 pr_err("%s: device not registered to this ulp type %d\n",
 561                        __func__, ulp_type);
 562                 mutex_unlock(&cnic_lock);
 563                 return -EINVAL;
 564         }
 565         mutex_unlock(&cnic_lock);
 566
 567         synchronize_rcu();
 568
 569         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 570                i < 20) {
 571                 msleep(100);
 572                 i++;
 573         }
 574         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 575                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 576
 577         return 0;
 578 }
 579 EXPORT_SYMBOL(cnic_unregister_driver);
 580
 581 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
 582 {
 583         id_tbl->start = start_id;
 584         id_tbl->max = size;
 585         id_tbl->next = 0;
 586         spin_lock_init(&id_tbl->lock);
 587         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 588         if (!id_tbl->table)
 589                 return -ENOMEM;
 590
 591         return 0;
 592 }
 593
 594 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 595 {
 596         kfree(id_tbl->table);
 597         id_tbl->table = NULL;
 598 }
 599
 600 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 601 {
 602         int ret = -1;
 603
 604         id -= id_tbl->start;
 605         if (id >= id_tbl->max)
 606                 return ret;
 607
 608         spin_lock(&id_tbl->lock);
 609         if (!test_bit(id, id_tbl->table)) {
 610                 set_bit(id, id_tbl->table);
 611                 ret = 0;
 612         }
 613         spin_unlock(&id_tbl->lock);
 614         return ret;
 615 }
 616
 617 /* Returns -1 if not successful */
 618 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 619 {
 620         u32 id;
 621
 622         spin_lock(&id_tbl->lock);
 623         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 624         if (id >= id_tbl->max) {
 625                 id = -1;
 626                 if (id_tbl->next != 0) {
 627                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 628                         if (id >= id_tbl->next)
 629                                 id = -1;
 630                 }
 631         }
 632
 633         if (id < id_tbl->max) {
 634                 set_bit(id, id_tbl->table);
 635                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 636                 id += id_tbl->start;
 637         }
 638
 639         spin_unlock(&id_tbl->lock);
 640
 641         return id;
 642 }
 643
 644 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 645 {
 646         if (id == -1)
 647                 return;
 648
 649         id -= id_tbl->start;
 650         if (id >= id_tbl->max)
 651                 return;
 652
 653         clear_bit(id, id_tbl->table);
 654 }
 655
 656 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 657 {
 658         int i;
 659
 660         if (!dma->pg_arr)
 661                 return;
 662
 663         for (i = 0; i < dma->num_pages; i++) {
 664                 if (dma->pg_arr[i]) {
 665                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
 666                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 667                         dma->pg_arr[i] = NULL;
 668                 }
 669         }
 670         if (dma->pgtbl) {
 671                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 672                                   dma->pgtbl, dma->pgtbl_map);
 673                 dma->pgtbl = NULL;
 674         }
 675         kfree(dma->pg_arr);
 676         dma->pg_arr = NULL;
 677         dma->num_pages = 0;
 678 }
 679
 680 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 681 {
 682         int i;
 683         u32 *page_table = dma->pgtbl;
 684
 685         for (i = 0; i < dma->num_pages; i++) {
 686                 /* Each entry needs to be in big endian format. */
 687                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 688                 page_table++;
 689                 *page_table = (u32) dma->pg_map_arr[i];
 690                 page_table++;
 691         }
 692 }
 693
 694 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 695 {
 696         int i;
 697         u32 *page_table = dma->pgtbl;
 698
 699         for (i = 0; i < dma->num_pages; i++) {
 700                 /* Each entry needs to be in little endian format. */
 701                 *page_table = dma->pg_map_arr[i] & 0xffffffff;
 702                 page_table++;
 703                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 704                 page_table++;
 705         }
 706 }
 707
 708 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 709                           int pages, int use_pg_tbl)
 710 {
 711         int i, size;
 712         struct cnic_local *cp = dev->cnic_priv;
 713
 714         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 715         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 716         if (dma->pg_arr == NULL)
 717                 return -ENOMEM;
 718
 719         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 720         dma->num_pages = pages;
 721
 722         for (i = 0; i < pages; i++) {
 723                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 724                                                     BCM_PAGE_SIZE,
 725                                                     &dma->pg_map_arr[i],
 726                                                     GFP_ATOMIC);
 727                 if (dma->pg_arr[i] == NULL)
 728                         goto error;
 729         }
 730         if (!use_pg_tbl)
 731                 return 0;
 732
 733         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 734                           ~(BCM_PAGE_SIZE - 1);
 735         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 736                                         &dma->pgtbl_map, GFP_ATOMIC);
 737         if (dma->pgtbl == NULL)
 738                 goto error;
 739
 740         cp->setup_pgtbl(dev, dma);
 741
 742         return 0;
 743
 744 error:
 745         cnic_free_dma(dev, dma);
 746         return -ENOMEM;
 747 }
 748
 749 static void cnic_free_context(struct cnic_dev *dev)
 750 {
 751         struct cnic_local *cp = dev->cnic_priv;
 752         int i;
 753
 754         for (i = 0; i < cp->ctx_blks; i++) {
 755                 if (cp->ctx_arr[i].ctx) {
 756                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 757                                           cp->ctx_arr[i].ctx,
 758                                           cp->ctx_arr[i].mapping);
 759                         cp->ctx_arr[i].ctx = NULL;
 760                 }
 761         }
 762 }
 763
 764 static void cnic_free_resc(struct cnic_dev *dev)
 765 {
 766         struct cnic_local *cp = dev->cnic_priv;
 767         int i = 0;
 768
 769         if (cp->cnic_uinfo) {
 770                 while (cp->uio_dev != -1 && i < 15) {
 771                         msleep(100);
 772                         i++;
 773                 }
 774                 uio_unregister_device(cp->cnic_uinfo);
 775                 kfree(cp->cnic_uinfo);
 776                 cp->cnic_uinfo = NULL;
 777         }
 778
 779         if (cp->l2_buf) {
 780                 dma_free_coherent(&dev->pcidev->dev, cp->l2_buf_size,
 781                                   cp->l2_buf, cp->l2_buf_map);
 782                 cp->l2_buf = NULL;
 783         }
 784
 785         if (cp->l2_ring) {
 786                 dma_free_coherent(&dev->pcidev->dev, cp->l2_ring_size,
 787                                   cp->l2_ring, cp->l2_ring_map);
 788                 cp->l2_ring = NULL;
 789         }
 790
 791         cnic_free_context(dev);
 792         kfree(cp->ctx_arr);
 793         cp->ctx_arr = NULL;
 794         cp->ctx_blks = 0;
 795
 796         cnic_free_dma(dev, &cp->gbl_buf_info);
 797         cnic_free_dma(dev, &cp->conn_buf_info);
 798         cnic_free_dma(dev, &cp->kwq_info);
 799         cnic_free_dma(dev, &cp->kwq_16_data_info);
 800         cnic_free_dma(dev, &cp->kcq_info);
 801         kfree(cp->iscsi_tbl);
 802         cp->iscsi_tbl = NULL;
 803         kfree(cp->ctx_tbl);
 804         cp->ctx_tbl = NULL;
 805
 806         cnic_free_id_tbl(&cp->cid_tbl);
 807 }
 808
 809 static int cnic_alloc_context(struct cnic_dev *dev)
 810 {
 811         struct cnic_local *cp = dev->cnic_priv;
 812
 813         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 814                 int i, k, arr_size;
 815
 816                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 817                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 818                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 819                            sizeof(struct cnic_ctx);
 820                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 821                 if (cp->ctx_arr == NULL)
 822                         return -ENOMEM;
 823
 824                 k = 0;
 825                 for (i = 0; i < 2; i++) {
 826                         u32 j, reg, off, lo, hi;
 827
 828                         if (i == 0)
 829                                 off = BNX2_PG_CTX_MAP;
 830                         else
 831                                 off = BNX2_ISCSI_CTX_MAP;
 832
 833                         reg = cnic_reg_rd_ind(dev, off);
 834                         lo = reg >> 16;
 835                         hi = reg & 0xffff;
 836                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 837                                 cp->ctx_arr[k].cid = j;
 838                 }
 839
 840                 cp->ctx_blks = k;
 841                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 842                         cp->ctx_blks = 0;
 843                         return -ENOMEM;
 844                 }
 845
 846                 for (i = 0; i < cp->ctx_blks; i++) {
 847                         cp->ctx_arr[i].ctx =
 848                                 dma_alloc_coherent(&dev->pcidev->dev,
 849                                                    BCM_PAGE_SIZE,
 850                                                    &cp->ctx_arr[i].mapping,
 851                                                    GFP_KERNEL);
 852                         if (cp->ctx_arr[i].ctx == NULL)
 853                                 return -ENOMEM;
 854                 }
 855         }
 856         return 0;
 857 }
 858
 859 static int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages)
 860 {
 861         struct cnic_local *cp = dev->cnic_priv;
 862
 863         cp->l2_ring_size = pages * BCM_PAGE_SIZE;
 864         cp->l2_ring = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_ring_size,
 865                                          &cp->l2_ring_map,
 866                                          GFP_KERNEL | __GFP_COMP);
 867         if (!cp->l2_ring)
 868                 return -ENOMEM;
 869
 870         cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
 871         cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size);
 872         cp->l2_buf = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_buf_size,
 873                                         &cp->l2_buf_map,
 874                                         GFP_KERNEL | __GFP_COMP);
 875         if (!cp->l2_buf)
 876                 return -ENOMEM;
 877
 878         return 0;
 879 }
 880
 881 static int cnic_alloc_uio(struct cnic_dev *dev) {
 882         struct cnic_local *cp = dev->cnic_priv;
 883         struct uio_info *uinfo;
 884         int ret;
 885
 886         uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC);
 887         if (!uinfo)
 888                 return -ENOMEM;
 889
 890         uinfo->mem[0].addr = dev->netdev->base_addr;
 891         uinfo->mem[0].internal_addr = dev->regview;
 892         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
 893         uinfo->mem[0].memtype = UIO_MEM_PHYS;
 894
 895         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
 896                 uinfo->mem[1].addr = (unsigned long) cp->status_blk & PAGE_MASK;
 897                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
 898                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
 899                 else
 900                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
 901
 902                 uinfo->name = "bnx2_cnic";
 903         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
 904                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
 905                         PAGE_MASK;
 906                 uinfo->mem[1].size = sizeof(struct host_def_status_block);
 907
 908                 uinfo->name = "bnx2x_cnic";
 909         }
 910
 911         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 912
 913         uinfo->mem[2].addr = (unsigned long) cp->l2_ring;
 914         uinfo->mem[2].size = cp->l2_ring_size;
 915         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
 916
 917         uinfo->mem[3].addr = (unsigned long) cp->l2_buf;
 918         uinfo->mem[3].size = cp->l2_buf_size;
 919         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
 920
 921         uinfo->version = CNIC_MODULE_VERSION;
 922         uinfo->irq = UIO_IRQ_CUSTOM;
 923
 924         uinfo->open = cnic_uio_open;
 925         uinfo->release = cnic_uio_close;
 926
 927         uinfo->priv = dev;
 928
 929         ret = uio_register_device(&dev->pcidev->dev, uinfo);
 930         if (ret) {
 931                 kfree(uinfo);
 932                 return ret;
 933         }
 934
 935         cp->cnic_uinfo = uinfo;
 936         return 0;
 937 }
 938
 939 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
 940 {
 941         struct cnic_local *cp = dev->cnic_priv;
 942         int ret;
 943
 944         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
 945         if (ret)
 946                 goto error;
 947         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
 948
 949         ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1);
 950         if (ret)
 951                 goto error;
 952         cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
 953
 954         ret = cnic_alloc_context(dev);
 955         if (ret)
 956                 goto error;
 957
 958         ret = cnic_alloc_l2_rings(dev, 2);
 959         if (ret)
 960                 goto error;
 961
 962         ret = cnic_alloc_uio(dev);
 963         if (ret)
 964                 goto error;
 965
 966         return 0;
 967
 968 error:
 969         cnic_free_resc(dev);
 970         return ret;
 971 }
 972
 973 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
 974 {
 975         struct cnic_local *cp = dev->cnic_priv;
 976         struct cnic_eth_dev *ethdev = cp->ethdev;
 977         int ctx_blk_size = cp->ethdev->ctx_blk_size;
 978         int total_mem, blks, i, cid_space;
 979
 980         if (BNX2X_ISCSI_START_CID < ethdev->starting_cid)
 981                 return -EINVAL;
 982
 983         cid_space = MAX_ISCSI_TBL_SZ +
 984                     (BNX2X_ISCSI_START_CID - ethdev->starting_cid);
 985
 986         total_mem = BNX2X_CONTEXT_MEM_SIZE * cid_space;
 987         blks = total_mem / ctx_blk_size;
 988         if (total_mem % ctx_blk_size)
 989                 blks++;
 990
 991         if (blks > cp->ethdev->ctx_tbl_len)
 992                 return -ENOMEM;
 993
 994         cp->ctx_arr = kzalloc(blks * sizeof(struct cnic_ctx), GFP_KERNEL);
 995         if (cp->ctx_arr == NULL)
 996                 return -ENOMEM;
 997
 998         cp->ctx_blks = blks;
 999         cp->ctx_blk_size = ctx_blk_size;
1000         if (BNX2X_CHIP_IS_E1H(cp->chip_id))
1001                 cp->ctx_align = 0;
1002         else
1003                 cp->ctx_align = ctx_blk_size;
1004
1005         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1006
1007         for (i = 0; i < blks; i++) {
1008                 cp->ctx_arr[i].ctx =
1009                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1010                                            &cp->ctx_arr[i].mapping,
1011                                            GFP_KERNEL);
1012                 if (cp->ctx_arr[i].ctx == NULL)
1013                         return -ENOMEM;
1014
1015                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1016                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1017                                 cnic_free_context(dev);
1018                                 cp->ctx_blk_size += cp->ctx_align;
1019                                 i = -1;
1020                                 continue;
1021                         }
1022                 }
1023         }
1024         return 0;
1025 }
1026
1027 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1028 {
1029         struct cnic_local *cp = dev->cnic_priv;
1030         int i, j, n, ret, pages;
1031         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1032
1033         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1034                                 GFP_KERNEL);
1035         if (!cp->iscsi_tbl)
1036                 goto error;
1037
1038         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1039                                   MAX_CNIC_L5_CONTEXT, GFP_KERNEL);
1040         if (!cp->ctx_tbl)
1041                 goto error;
1042
1043         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1044                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1045                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1046         }
1047
1048         pages = PAGE_ALIGN(MAX_CNIC_L5_CONTEXT * CNIC_KWQ16_DATA_SIZE) /
1049                 PAGE_SIZE;
1050
1051         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1052         if (ret)
1053                 return -ENOMEM;
1054
1055         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1056         for (i = 0, j = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1057                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1058
1059                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1060                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1061                                                    off;
1062
1063                 if ((i % n) == (n - 1))
1064                         j++;
1065         }
1066
1067         ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 0);
1068         if (ret)
1069                 goto error;
1070         cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
1071
1072         for (i = 0; i < KCQ_PAGE_CNT; i++) {
1073                 struct bnx2x_bd_chain_next *next =
1074                         (struct bnx2x_bd_chain_next *)
1075                         &cp->kcq[i][MAX_KCQE_CNT];
1076                 int j = i + 1;
1077
1078                 if (j >= KCQ_PAGE_CNT)
1079                         j = 0;
1080                 next->addr_hi = (u64) cp->kcq_info.pg_map_arr[j] >> 32;
1081                 next->addr_lo = cp->kcq_info.pg_map_arr[j] & 0xffffffff;
1082         }
1083
1084         pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
1085                            BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
1086         ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
1087         if (ret)
1088                 goto error;
1089
1090         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1091         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1092         if (ret)
1093                 goto error;
1094
1095         ret = cnic_alloc_bnx2x_context(dev);
1096         if (ret)
1097                 goto error;
1098
1099         cp->bnx2x_status_blk = cp->status_blk;
1100         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1101
1102         memset(cp->bnx2x_status_blk, 0, sizeof(struct host_status_block));
1103
1104         cp->l2_rx_ring_size = 15;
1105
1106         ret = cnic_alloc_l2_rings(dev, 4);
1107         if (ret)
1108                 goto error;
1109
1110         ret = cnic_alloc_uio(dev);
1111         if (ret)
1112                 goto error;
1113
1114         return 0;
1115
1116 error:
1117         cnic_free_resc(dev);
1118         return -ENOMEM;
1119 }
1120
1121 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1122 {
1123         return cp->max_kwq_idx -
1124                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1125 }
1126
1127 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1128                                   u32 num_wqes)
1129 {
1130         struct cnic_local *cp = dev->cnic_priv;
1131         struct kwqe *prod_qe;
1132         u16 prod, sw_prod, i;
1133
1134         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1135                 return -EAGAIN;         /* bnx2 is down */
1136
1137         spin_lock_bh(&cp->cnic_ulp_lock);
1138         if (num_wqes > cnic_kwq_avail(cp) &&
1139             !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) {
1140                 spin_unlock_bh(&cp->cnic_ulp_lock);
1141                 return -EAGAIN;
1142         }
1143
1144         cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT;
1145
1146         prod = cp->kwq_prod_idx;
1147         sw_prod = prod & MAX_KWQ_IDX;
1148         for (i = 0; i < num_wqes; i++) {
1149                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1150                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1151                 prod++;
1152                 sw_prod = prod & MAX_KWQ_IDX;
1153         }
1154         cp->kwq_prod_idx = prod;
1155
1156         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1157
1158         spin_unlock_bh(&cp->cnic_ulp_lock);
1159         return 0;
1160 }
1161
1162 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1163                                    union l5cm_specific_data *l5_data)
1164 {
1165         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1166         dma_addr_t map;
1167
1168         map = ctx->kwqe_data_mapping;
1169         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1170         l5_data->phy_address.hi = (u64) map >> 32;
1171         return ctx->kwqe_data;
1172 }
1173
1174 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1175                                 u32 type, union l5cm_specific_data *l5_data)
1176 {
1177         struct cnic_local *cp = dev->cnic_priv;
1178         struct l5cm_spe kwqe;
1179         struct kwqe_16 *kwq[1];
1180         int ret;
1181
1182         kwqe.hdr.conn_and_cmd_data =
1183                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1184                              BNX2X_HW_CID(cid, cp->func)));
1185         kwqe.hdr.type = cpu_to_le16(type);
1186         kwqe.hdr.reserved = 0;
1187         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1188         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1189
1190         kwq[0] = (struct kwqe_16 *) &kwqe;
1191
1192         spin_lock_bh(&cp->cnic_ulp_lock);
1193         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1194         spin_unlock_bh(&cp->cnic_ulp_lock);
1195
1196         if (ret == 1)
1197                 return 0;
1198
1199         return -EBUSY;
1200 }
1201
1202 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1203                                    struct kcqe *cqes[], u32 num_cqes)
1204 {
1205         struct cnic_local *cp = dev->cnic_priv;
1206         struct cnic_ulp_ops *ulp_ops;
1207
1208         rcu_read_lock();
1209         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1210         if (likely(ulp_ops)) {
1211                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1212                                           cqes, num_cqes);
1213         }
1214         rcu_read_unlock();
1215 }
1216
1217 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1218 {
1219         struct cnic_local *cp = dev->cnic_priv;
1220         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1221         int func = cp->func, pages;
1222         int hq_bds;
1223
1224         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1225         cp->num_ccells = req1->num_ccells_per_conn;
1226         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1227                               cp->num_iscsi_tasks;
1228         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1229                         BNX2X_ISCSI_R2TQE_SIZE;
1230         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1231         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1232         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1233         cp->num_cqs = req1->num_cqs;
1234
1235         if (!dev->max_iscsi_conn)
1236                 return 0;
1237
1238         /* init Tstorm RAM */
1239         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(func),
1240                   req1->rq_num_wqes);
1241         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1242                   PAGE_SIZE);
1243         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1244                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1245         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1246                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1247                   req1->num_tasks_per_conn);
1248
1249         /* init Ustorm RAM */
1250         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1251                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(func),
1252                   req1->rq_buffer_size);
1253         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1254                   PAGE_SIZE);
1255         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1256                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1257         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1258                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1259                   req1->num_tasks_per_conn);
1260         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(func),
1261                   req1->rq_num_wqes);
1262         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(func),
1263                   req1->cq_num_wqes);
1264         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1265                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1266
1267         /* init Xstorm RAM */
1268         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1269                   PAGE_SIZE);
1270         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1271                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1272         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1273                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1274                   req1->num_tasks_per_conn);
1275         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1276                   hq_bds);
1277         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(func),
1278                   req1->num_tasks_per_conn);
1279         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1280                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1281
1282         /* init Cstorm RAM */
1283         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1284                   PAGE_SIZE);
1285         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1286                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1287         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1288                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1289                   req1->num_tasks_per_conn);
1290         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(func),
1291                   req1->cq_num_wqes);
1292         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1293                   hq_bds);
1294
1295         return 0;
1296 }
1297
1298 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1299 {
1300         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1301         struct cnic_local *cp = dev->cnic_priv;
1302         int func = cp->func;
1303         struct iscsi_kcqe kcqe;
1304         struct kcqe *cqes[1];
1305
1306         memset(&kcqe, 0, sizeof(kcqe));
1307         if (!dev->max_iscsi_conn) {
1308                 kcqe.completion_status =
1309                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1310                 goto done;
1311         }
1312
1313         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1314                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1315         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1316                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1317                 req2->error_bit_map[1]);
1318
1319         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1320                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1321         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1322                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1323         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1324                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1325                 req2->error_bit_map[1]);
1326
1327         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1328                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1329
1330         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1331
1332 done:
1333         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1334         cqes[0] = (struct kcqe *) &kcqe;
1335         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1336
1337         return 0;
1338 }
1339
1340 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1341 {
1342         struct cnic_local *cp = dev->cnic_priv;
1343         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1344
1345         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1346                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1347
1348                 cnic_free_dma(dev, &iscsi->hq_info);
1349                 cnic_free_dma(dev, &iscsi->r2tq_info);
1350                 cnic_free_dma(dev, &iscsi->task_array_info);
1351         }
1352         cnic_free_id(&cp->cid_tbl, ctx->cid);
1353         ctx->cid = 0;
1354 }
1355
1356 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1357 {
1358         u32 cid;
1359         int ret, pages;
1360         struct cnic_local *cp = dev->cnic_priv;
1361         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1362         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1363
1364         cid = cnic_alloc_new_id(&cp->cid_tbl);
1365         if (cid == -1) {
1366                 ret = -ENOMEM;
1367                 goto error;
1368         }
1369
1370         ctx->cid = cid;
1371         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1372
1373         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1374         if (ret)
1375                 goto error;
1376
1377         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1378         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1379         if (ret)
1380                 goto error;
1381
1382         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1383         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1384         if (ret)
1385                 goto error;
1386
1387         return 0;
1388
1389 error:
1390         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1391         return ret;
1392 }
1393
1394 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1395                                 struct regpair *ctx_addr)
1396 {
1397         struct cnic_local *cp = dev->cnic_priv;
1398         struct cnic_eth_dev *ethdev = cp->ethdev;
1399         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1400         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1401         unsigned long align_off = 0;
1402         dma_addr_t ctx_map;
1403         void *ctx;
1404
1405         if (cp->ctx_align) {
1406                 unsigned long mask = cp->ctx_align - 1;
1407
1408                 if (cp->ctx_arr[blk].mapping & mask)
1409                         align_off = cp->ctx_align -
1410                                     (cp->ctx_arr[blk].mapping & mask);
1411         }
1412         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1413                 (off * BNX2X_CONTEXT_MEM_SIZE);
1414         ctx = cp->ctx_arr[blk].ctx + align_off +
1415               (off * BNX2X_CONTEXT_MEM_SIZE);
1416         if (init)
1417                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1418
1419         ctx_addr->lo = ctx_map & 0xffffffff;
1420         ctx_addr->hi = (u64) ctx_map >> 32;
1421         return ctx;
1422 }
1423
1424 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1425                                 u32 num)
1426 {
1427         struct cnic_local *cp = dev->cnic_priv;
1428         struct iscsi_kwqe_conn_offload1 *req1 =
1429                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1430         struct iscsi_kwqe_conn_offload2 *req2 =
1431                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1432         struct iscsi_kwqe_conn_offload3 *req3;
1433         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1434         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1435         u32 cid = ctx->cid;
1436         u32 hw_cid = BNX2X_HW_CID(cid, cp->func);
1437         struct iscsi_context *ictx;
1438         struct regpair context_addr;
1439         int i, j, n = 2, n_max;
1440
1441         ctx->ctx_flags = 0;
1442         if (!req2->num_additional_wqes)
1443                 return -EINVAL;
1444
1445         n_max = req2->num_additional_wqes + 2;
1446
1447         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1448         if (ictx == NULL)
1449                 return -ENOMEM;
1450
1451         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1452
1453         ictx->xstorm_ag_context.hq_prod = 1;
1454
1455         ictx->xstorm_st_context.iscsi.first_burst_length =
1456                 ISCSI_DEF_FIRST_BURST_LEN;
1457         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1458                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1459         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1460                 req1->sq_page_table_addr_lo;
1461         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1462                 req1->sq_page_table_addr_hi;
1463         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1464         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1465         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1466                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1467         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1468                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1469         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1470                 iscsi->hq_info.pgtbl[0];
1471         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1472                 iscsi->hq_info.pgtbl[1];
1473         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1474                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1475         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1476                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1477         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1478                 iscsi->r2tq_info.pgtbl[0];
1479         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1480                 iscsi->r2tq_info.pgtbl[1];
1481         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1482                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1483         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1484                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1485         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1486                 BNX2X_ISCSI_PBL_NOT_CACHED;
1487         ictx->xstorm_st_context.iscsi.flags.flags |=
1488                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1489         ictx->xstorm_st_context.iscsi.flags.flags |=
1490                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1491
1492         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1493         /* TSTORM requires the base address of RQ DB & not PTE */
1494         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1495                 req2->rq_page_table_addr_lo & PAGE_MASK;
1496         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1497                 req2->rq_page_table_addr_hi;
1498         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1499         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1500         ictx->tstorm_st_context.tcp.flags2 |=
1501                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1502
1503         ictx->timers_context.flags |= ISCSI_TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1504
1505         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1506                 req2->rq_page_table_addr_lo;
1507         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1508                 req2->rq_page_table_addr_hi;
1509         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1510         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1511         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1512                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1513         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1514                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1515         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1516                 iscsi->r2tq_info.pgtbl[0];
1517         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1518                 iscsi->r2tq_info.pgtbl[1];
1519         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1520                 req1->cq_page_table_addr_lo;
1521         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1522                 req1->cq_page_table_addr_hi;
1523         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1524         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1525         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1526         ictx->ustorm_st_context.task_pbe_cache_index =
1527                 BNX2X_ISCSI_PBL_NOT_CACHED;
1528         ictx->ustorm_st_context.task_pdu_cache_index =
1529                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1530
1531         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1532                 if (j == 3) {
1533                         if (n >= n_max)
1534                                 break;
1535                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1536                         j = 0;
1537                 }
1538                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1539                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1540                         req3->qp_first_pte[j].hi;
1541                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1542                         req3->qp_first_pte[j].lo;
1543         }
1544
1545         ictx->ustorm_st_context.task_pbl_base.lo =
1546                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1547         ictx->ustorm_st_context.task_pbl_base.hi =
1548                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1549         ictx->ustorm_st_context.tce_phy_addr.lo =
1550                 iscsi->task_array_info.pgtbl[0];
1551         ictx->ustorm_st_context.tce_phy_addr.hi =
1552                 iscsi->task_array_info.pgtbl[1];
1553         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1554         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1555         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1556         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1557                 ISCSI_DEF_MAX_BURST_LEN;
1558         ictx->ustorm_st_context.negotiated_rx |=
1559                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1560                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1561
1562         ictx->cstorm_st_context.hq_pbl_base.lo =
1563                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1564         ictx->cstorm_st_context.hq_pbl_base.hi =
1565                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1566         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1567         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1568         ictx->cstorm_st_context.task_pbl_base.lo =
1569                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1570         ictx->cstorm_st_context.task_pbl_base.hi =
1571                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1572         /* CSTORM and USTORM initialization is different, CSTORM requires
1573          * CQ DB base & not PTE addr */
1574         ictx->cstorm_st_context.cq_db_base.lo =
1575                 req1->cq_page_table_addr_lo & PAGE_MASK;
1576         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1577         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1578         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1579         for (i = 0; i < cp->num_cqs; i++) {
1580                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1581                         ISCSI_INITIAL_SN;
1582                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1583                         ISCSI_INITIAL_SN;
1584         }
1585
1586         ictx->xstorm_ag_context.cdu_reserved =
1587                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1588                                        ISCSI_CONNECTION_TYPE);
1589         ictx->ustorm_ag_context.cdu_usage =
1590                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1591                                        ISCSI_CONNECTION_TYPE);
1592         return 0;
1593
1594 }
1595
1596 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1597                                    u32 num, int *work)
1598 {
1599         struct iscsi_kwqe_conn_offload1 *req1;
1600         struct iscsi_kwqe_conn_offload2 *req2;
1601         struct cnic_local *cp = dev->cnic_priv;
1602         struct iscsi_kcqe kcqe;
1603         struct kcqe *cqes[1];
1604         u32 l5_cid;
1605         int ret;
1606
1607         if (num < 2) {
1608                 *work = num;
1609                 return -EINVAL;
1610         }
1611
1612         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1613         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1614         if ((num - 2) < req2->num_additional_wqes) {
1615                 *work = num;
1616                 return -EINVAL;
1617         }
1618         *work = 2 + req2->num_additional_wqes;;
1619
1620         l5_cid = req1->iscsi_conn_id;
1621         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1622                 return -EINVAL;
1623
1624         memset(&kcqe, 0, sizeof(kcqe));
1625         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1626         kcqe.iscsi_conn_id = l5_cid;
1627         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1628
1629         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1630                 atomic_dec(&cp->iscsi_conn);
1631                 ret = 0;
1632                 goto done;
1633         }
1634         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1635         if (ret) {
1636                 atomic_dec(&cp->iscsi_conn);
1637                 ret = 0;
1638                 goto done;
1639         }
1640         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1641         if (ret < 0) {
1642                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1643                 atomic_dec(&cp->iscsi_conn);
1644                 goto done;
1645         }
1646
1647         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1648         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp->ctx_tbl[l5_cid].cid,
1649                                                   cp->func);
1650
1651 done:
1652         cqes[0] = (struct kcqe *) &kcqe;
1653         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1654         return ret;
1655 }
1656
1657
1658 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1659 {
1660         struct cnic_local *cp = dev->cnic_priv;
1661         struct iscsi_kwqe_conn_update *req =
1662                 (struct iscsi_kwqe_conn_update *) kwqe;
1663         void *data;
1664         union l5cm_specific_data l5_data;
1665         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1666         int ret;
1667
1668         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1669                 return -EINVAL;
1670
1671         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1672         if (!data)
1673                 return -ENOMEM;
1674
1675         memcpy(data, kwqe, sizeof(struct kwqe));
1676
1677         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1678                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1679         return ret;
1680 }
1681
1682 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1683 {
1684         struct cnic_local *cp = dev->cnic_priv;
1685         struct iscsi_kwqe_conn_destroy *req =
1686                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1687         union l5cm_specific_data l5_data;
1688         u32 l5_cid = req->reserved0;
1689         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1690         int ret = 0;
1691         struct iscsi_kcqe kcqe;
1692         struct kcqe *cqes[1];
1693
1694         if (!(ctx->ctx_flags & CTX_FL_OFFLD_START))
1695                 goto skip_cfc_delete;
1696
1697         while (!time_after(jiffies, ctx->timestamp + (2 * HZ)))
1698                 msleep(250);
1699
1700         init_waitqueue_head(&ctx->waitq);
1701         ctx->wait_cond = 0;
1702         memset(&l5_data, 0, sizeof(l5_data));
1703         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
1704                                   req->context_id,
1705                                   ETH_CONNECTION_TYPE |
1706                                   (1 << SPE_HDR_COMMON_RAMROD_SHIFT),
1707                                   &l5_data);
1708         if (ret == 0)
1709                 wait_event(ctx->waitq, ctx->wait_cond);
1710
1711 skip_cfc_delete:
1712         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1713
1714         atomic_dec(&cp->iscsi_conn);
1715
1716         memset(&kcqe, 0, sizeof(kcqe));
1717         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1718         kcqe.iscsi_conn_id = l5_cid;
1719         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1720         kcqe.iscsi_conn_context_id = req->context_id;
1721
1722         cqes[0] = (struct kcqe *) &kcqe;
1723         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1724
1725         return ret;
1726 }
1727
1728 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1729                                       struct l4_kwq_connect_req1 *kwqe1,
1730                                       struct l4_kwq_connect_req3 *kwqe3,
1731                                       struct l5cm_active_conn_buffer *conn_buf)
1732 {
1733         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1734         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1735                 &conn_buf->xstorm_conn_buffer;
1736         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1737                 &conn_buf->tstorm_conn_buffer;
1738         struct regpair context_addr;
1739         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1740         struct in6_addr src_ip, dst_ip;
1741         int i;
1742         u32 *addrp;
1743
1744         addrp = (u32 *) &conn_addr->local_ip_addr;
1745         for (i = 0; i < 4; i++, addrp++)
1746                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1747
1748         addrp = (u32 *) &conn_addr->remote_ip_addr;
1749         for (i = 0; i < 4; i++, addrp++)
1750                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1751
1752         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1753
1754         xstorm_buf->context_addr.hi = context_addr.hi;
1755         xstorm_buf->context_addr.lo = context_addr.lo;
1756         xstorm_buf->mss = 0xffff;
1757         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1758         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1759                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1760         xstorm_buf->pseudo_header_checksum =
1761                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1762
1763         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1764                 tstorm_buf->params |=
1765                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1766         if (kwqe3->ka_timeout) {
1767                 tstorm_buf->ka_enable = 1;
1768                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1769                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1770                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1771         }
1772         tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1773         tstorm_buf->snd_buf = kwqe3->snd_buf;
1774         tstorm_buf->max_rt_time = 0xffffffff;
1775 }
1776
1777 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1778 {
1779         struct cnic_local *cp = dev->cnic_priv;
1780         int func = CNIC_FUNC(cp);
1781         u8 *mac = dev->mac_addr;
1782
1783         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1784                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(func), mac[0]);
1785         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1786                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(func), mac[1]);
1787         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1788                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(func), mac[2]);
1789         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1790                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(func), mac[3]);
1791         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1792                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(func), mac[4]);
1793         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1794                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(func), mac[5]);
1795
1796         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1797                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func), mac[5]);
1798         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1799                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1800                  mac[4]);
1801         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1802                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func), mac[3]);
1803         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1804                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1805                  mac[2]);
1806         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1807                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 2,
1808                  mac[1]);
1809         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1810                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 3,
1811                  mac[0]);
1812 }
1813
1814 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1815 {
1816         struct cnic_local *cp = dev->cnic_priv;
1817         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1818         u16 tstorm_flags = 0;
1819
1820         if (tcp_ts) {
1821                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1822                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1823         }
1824
1825         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1826                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), xstorm_flags);
1827
1828         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1829                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), tstorm_flags);
1830 }
1831
1832 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
1833                               u32 num, int *work)
1834 {
1835         struct cnic_local *cp = dev->cnic_priv;
1836         struct l4_kwq_connect_req1 *kwqe1 =
1837                 (struct l4_kwq_connect_req1 *) wqes[0];
1838         struct l4_kwq_connect_req3 *kwqe3;
1839         struct l5cm_active_conn_buffer *conn_buf;
1840         struct l5cm_conn_addr_params *conn_addr;
1841         union l5cm_specific_data l5_data;
1842         u32 l5_cid = kwqe1->pg_cid;
1843         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
1844         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1845         int ret;
1846
1847         if (num < 2) {
1848                 *work = num;
1849                 return -EINVAL;
1850         }
1851
1852         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
1853                 *work = 3;
1854         else
1855                 *work = 2;
1856
1857         if (num < *work) {
1858                 *work = num;
1859                 return -EINVAL;
1860         }
1861
1862         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
1863                 netdev_err(dev->netdev, "conn_buf size too big\n");
1864                 return -ENOMEM;
1865         }
1866         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1867         if (!conn_buf)
1868                 return -ENOMEM;
1869
1870         memset(conn_buf, 0, sizeof(*conn_buf));
1871
1872         conn_addr = &conn_buf->conn_addr_buf;
1873         conn_addr->remote_addr_0 = csk->ha[0];
1874         conn_addr->remote_addr_1 = csk->ha[1];
1875         conn_addr->remote_addr_2 = csk->ha[2];
1876         conn_addr->remote_addr_3 = csk->ha[3];
1877         conn_addr->remote_addr_4 = csk->ha[4];
1878         conn_addr->remote_addr_5 = csk->ha[5];
1879
1880         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
1881                 struct l4_kwq_connect_req2 *kwqe2 =
1882                         (struct l4_kwq_connect_req2 *) wqes[1];
1883
1884                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
1885                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
1886                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
1887
1888                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
1889                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
1890                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
1891                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
1892         }
1893         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
1894
1895         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
1896         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
1897         conn_addr->local_tcp_port = kwqe1->src_port;
1898         conn_addr->remote_tcp_port = kwqe1->dst_port;
1899
1900         conn_addr->pmtu = kwqe3->pmtu;
1901         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
1902
1903         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1904                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->func), csk->vlan_id);
1905
1906         cnic_bnx2x_set_tcp_timestamp(dev,
1907                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
1908
1909         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
1910                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1911         if (!ret)
1912                 ctx->ctx_flags |= CTX_FL_OFFLD_START;
1913
1914         return ret;
1915 }
1916
1917 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
1918 {
1919         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
1920         union l5cm_specific_data l5_data;
1921         int ret;
1922
1923         memset(&l5_data, 0, sizeof(l5_data));
1924         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
1925                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1926         return ret;
1927 }
1928
1929 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
1930 {
1931         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
1932         union l5cm_specific_data l5_data;
1933         int ret;
1934
1935         memset(&l5_data, 0, sizeof(l5_data));
1936         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
1937                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1938         return ret;
1939 }
1940 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1941 {
1942         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
1943         struct l4_kcq kcqe;
1944         struct kcqe *cqes[1];
1945
1946         memset(&kcqe, 0, sizeof(kcqe));
1947         kcqe.pg_host_opaque = req->host_opaque;
1948         kcqe.pg_cid = req->host_opaque;
1949         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
1950         cqes[0] = (struct kcqe *) &kcqe;
1951         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1952         return 0;
1953 }
1954
1955 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1956 {
1957         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
1958         struct l4_kcq kcqe;
1959         struct kcqe *cqes[1];
1960
1961         memset(&kcqe, 0, sizeof(kcqe));
1962         kcqe.pg_host_opaque = req->pg_host_opaque;
1963         kcqe.pg_cid = req->pg_cid;
1964         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
1965         cqes[0] = (struct kcqe *) &kcqe;
1966         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1967         return 0;
1968 }
1969
1970 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1971                                    u32 num_wqes)
1972 {
1973         int i, work, ret;
1974         u32 opcode;
1975         struct kwqe *kwqe;
1976
1977         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1978                 return -EAGAIN;         /* bnx2 is down */
1979
1980         for (i = 0; i < num_wqes; ) {
1981                 kwqe = wqes[i];
1982                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
1983                 work = 1;
1984
1985                 switch (opcode) {
1986                 case ISCSI_KWQE_OPCODE_INIT1:
1987                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
1988                         break;
1989                 case ISCSI_KWQE_OPCODE_INIT2:
1990                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
1991                         break;
1992                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
1993                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
1994                                                      num_wqes - i, &work);
1995                         break;
1996                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
1997                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
1998                         break;
1999                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2000                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2001                         break;
2002                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2003                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2004                                                  &work);
2005                         break;
2006                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2007                         ret = cnic_bnx2x_close(dev, kwqe);
2008                         break;
2009                 case L4_KWQE_OPCODE_VALUE_RESET:
2010                         ret = cnic_bnx2x_reset(dev, kwqe);
2011                         break;
2012                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2013                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2014                         break;
2015                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2016                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2017                         break;
2018                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2019                         ret = 0;
2020                         break;
2021                 default:
2022                         ret = 0;
2023                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2024                                    opcode);
2025                         break;
2026                 }
2027                 if (ret < 0)
2028                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2029                                    opcode);
2030                 i += work;
2031         }
2032         return 0;
2033 }
2034
2035 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2036 {
2037         struct cnic_local *cp = dev->cnic_priv;
2038         int i, j;
2039
2040         i = 0;
2041         j = 1;
2042         while (num_cqes) {
2043                 struct cnic_ulp_ops *ulp_ops;
2044                 int ulp_type;
2045                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2046                 u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;
2047
2048                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2049                         cnic_kwq_completion(dev, 1);
2050
2051                 while (j < num_cqes) {
2052                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2053
2054                         if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
2055                                 break;
2056
2057                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2058                                 cnic_kwq_completion(dev, 1);
2059                         j++;
2060                 }
2061
2062                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2063                         ulp_type = CNIC_ULP_RDMA;
2064                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2065                         ulp_type = CNIC_ULP_ISCSI;
2066                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2067                         ulp_type = CNIC_ULP_L4;
2068                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2069                         goto end;
2070                 else {
2071                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2072                                    kcqe_op_flag);
2073                         goto end;
2074                 }
2075
2076                 rcu_read_lock();
2077                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2078                 if (likely(ulp_ops)) {
2079                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2080                                                   cp->completed_kcq + i, j);
2081                 }
2082                 rcu_read_unlock();
2083 end:
2084                 num_cqes -= j;
2085                 i += j;
2086                 j = 1;
2087         }
2088         return;
2089 }
2090
2091 static u16 cnic_bnx2_next_idx(u16 idx)
2092 {
2093         return idx + 1;
2094 }
2095
2096 static u16 cnic_bnx2_hw_idx(u16 idx)
2097 {
2098         return idx;
2099 }
2100
2101 static u16 cnic_bnx2x_next_idx(u16 idx)
2102 {
2103         idx++;
2104         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2105                 idx++;
2106
2107         return idx;
2108 }
2109
2110 static u16 cnic_bnx2x_hw_idx(u16 idx)
2111 {
2112         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2113                 idx++;
2114         return idx;
2115 }
2116
2117 static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
2118 {
2119         struct cnic_local *cp = dev->cnic_priv;
2120         u16 i, ri, last;
2121         struct kcqe *kcqe;
2122         int kcqe_cnt = 0, last_cnt = 0;
2123
2124         i = ri = last = *sw_prod;
2125         ri &= MAX_KCQ_IDX;
2126
2127         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2128                 kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2129                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2130                 i = cp->next_idx(i);
2131                 ri = i & MAX_KCQ_IDX;
2132                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2133                         last_cnt = kcqe_cnt;
2134                         last = i;
2135                 }
2136         }
2137
2138         *sw_prod = last;
2139         return last_cnt;
2140 }
2141
2142 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2143 {
2144         u16 rx_cons = *cp->rx_cons_ptr;
2145         u16 tx_cons = *cp->tx_cons_ptr;
2146
2147         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2148                 cp->tx_cons = tx_cons;
2149                 cp->rx_cons = rx_cons;
2150
2151                 uio_event_notify(cp->cnic_uinfo);
2152         }
2153 }
2154
2155 static int cnic_service_bnx2(void *data, void *status_blk)
2156 {
2157         struct cnic_dev *dev = data;
2158         struct status_block *sblk = status_blk;
2159         struct cnic_local *cp = dev->cnic_priv;
2160         u32 status_idx = sblk->status_idx;
2161         u16 hw_prod, sw_prod;
2162         int kcqe_cnt;
2163
2164         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2165                 return status_idx;
2166
2167         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2168
2169         hw_prod = sblk->status_completion_producer_index;
2170         sw_prod = cp->kcq_prod_idx;
2171         while (sw_prod != hw_prod) {
2172                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2173                 if (kcqe_cnt == 0)
2174                         goto done;
2175
2176                 service_kcqes(dev, kcqe_cnt);
2177
2178                 /* Tell compiler that status_blk fields can change. */
2179                 barrier();
2180                 if (status_idx != sblk->status_idx) {
2181                         status_idx = sblk->status_idx;
2182                         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2183                         hw_prod = sblk->status_completion_producer_index;
2184                 } else
2185                         break;
2186         }
2187
2188 done:
2189         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2190
2191         cp->kcq_prod_idx = sw_prod;
2192
2193         cnic_chk_pkt_rings(cp);
2194         return status_idx;
2195 }
2196
2197 static void cnic_service_bnx2_msix(unsigned long data)
2198 {
2199         struct cnic_dev *dev = (struct cnic_dev *) data;
2200         struct cnic_local *cp = dev->cnic_priv;
2201         struct status_block_msix *status_blk = cp->bnx2_status_blk;
2202         u32 status_idx = status_blk->status_idx;
2203         u16 hw_prod, sw_prod;
2204         int kcqe_cnt;
2205
2206         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2207
2208         hw_prod = status_blk->status_completion_producer_index;
2209         sw_prod = cp->kcq_prod_idx;
2210         while (sw_prod != hw_prod) {
2211                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2212                 if (kcqe_cnt == 0)
2213                         goto done;
2214
2215                 service_kcqes(dev, kcqe_cnt);
2216
2217                 /* Tell compiler that status_blk fields can change. */
2218                 barrier();
2219                 if (status_idx != status_blk->status_idx) {
2220                         status_idx = status_blk->status_idx;
2221                         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2222                         hw_prod = status_blk->status_completion_producer_index;
2223                 } else
2224                         break;
2225         }
2226
2227 done:
2228         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2229         cp->kcq_prod_idx = sw_prod;
2230
2231         cnic_chk_pkt_rings(cp);
2232
2233         cp->last_status_idx = status_idx;
2234         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2235                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2236 }
2237
2238 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2239 {
2240         struct cnic_dev *dev = dev_instance;
2241         struct cnic_local *cp = dev->cnic_priv;
2242         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2243
2244         if (cp->ack_int)
2245                 cp->ack_int(dev);
2246
2247         prefetch(cp->status_blk);
2248         prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2249
2250         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2251                 tasklet_schedule(&cp->cnic_irq_task);
2252
2253         return IRQ_HANDLED;
2254 }
2255
2256 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2257                                       u16 index, u8 op, u8 update)
2258 {
2259         struct cnic_local *cp = dev->cnic_priv;
2260         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2261                        COMMAND_REG_INT_ACK);
2262         struct igu_ack_register igu_ack;
2263
2264         igu_ack.status_block_index = index;
2265         igu_ack.sb_id_and_flags =
2266                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2267                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2268                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2269                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2270
2271         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2272 }
2273
2274 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2275 {
2276         struct cnic_local *cp = dev->cnic_priv;
2277
2278         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID, 0,
2279                            IGU_INT_DISABLE, 0);
2280 }
2281
2282 static void cnic_service_bnx2x_bh(unsigned long data)
2283 {
2284         struct cnic_dev *dev = (struct cnic_dev *) data;
2285         struct cnic_local *cp = dev->cnic_priv;
2286         u16 hw_prod, sw_prod;
2287         struct cstorm_status_block_c *sblk =
2288                 &cp->bnx2x_status_blk->c_status_block;
2289         u32 status_idx = sblk->status_block_index;
2290         int kcqe_cnt;
2291
2292         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2293                 return;
2294
2295         hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2296         hw_prod = cp->hw_idx(hw_prod);
2297         sw_prod = cp->kcq_prod_idx;
2298         while (sw_prod != hw_prod) {
2299                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2300                 if (kcqe_cnt == 0)
2301                         goto done;
2302
2303                 service_kcqes(dev, kcqe_cnt);
2304
2305                 /* Tell compiler that sblk fields can change. */
2306                 barrier();
2307                 if (status_idx == sblk->status_block_index)
2308                         break;
2309
2310                 status_idx = sblk->status_block_index;
2311                 hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2312                 hw_prod = cp->hw_idx(hw_prod);
2313         }
2314
2315 done:
2316         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod + MAX_KCQ_IDX);
2317         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID,
2318                            status_idx, IGU_INT_ENABLE, 1);
2319
2320         cp->kcq_prod_idx = sw_prod;
2321         return;
2322 }
2323
2324 static int cnic_service_bnx2x(void *data, void *status_blk)
2325 {
2326         struct cnic_dev *dev = data;
2327         struct cnic_local *cp = dev->cnic_priv;
2328         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2329
2330         prefetch(cp->status_blk);
2331         prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2332
2333         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2334                 tasklet_schedule(&cp->cnic_irq_task);
2335
2336         cnic_chk_pkt_rings(cp);
2337
2338         return 0;
2339 }
2340
2341 static void cnic_ulp_stop(struct cnic_dev *dev)
2342 {
2343         struct cnic_local *cp = dev->cnic_priv;
2344         int if_type;
2345
2346         if (cp->cnic_uinfo)
2347                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2348
2349         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2350                 struct cnic_ulp_ops *ulp_ops;
2351
2352                 mutex_lock(&cnic_lock);
2353                 ulp_ops = cp->ulp_ops[if_type];
2354                 if (!ulp_ops) {
2355                         mutex_unlock(&cnic_lock);
2356                         continue;
2357                 }
2358                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2359                 mutex_unlock(&cnic_lock);
2360
2361                 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2362                         ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2363
2364                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2365         }
2366 }
2367
2368 static void cnic_ulp_start(struct cnic_dev *dev)
2369 {
2370         struct cnic_local *cp = dev->cnic_priv;
2371         int if_type;
2372
2373         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2374                 struct cnic_ulp_ops *ulp_ops;
2375
2376                 mutex_lock(&cnic_lock);
2377                 ulp_ops = cp->ulp_ops[if_type];
2378                 if (!ulp_ops || !ulp_ops->cnic_start) {
2379                         mutex_unlock(&cnic_lock);
2380                         continue;
2381                 }
2382                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2383                 mutex_unlock(&cnic_lock);
2384
2385                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2386                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2387
2388                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2389         }
2390 }
2391
2392 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
2393 {
2394         struct cnic_dev *dev = data;
2395
2396         switch (info->cmd) {
2397         case CNIC_CTL_STOP_CMD:
2398                 cnic_hold(dev);
2399
2400                 cnic_ulp_stop(dev);
2401                 cnic_stop_hw(dev);
2402
2403                 cnic_put(dev);
2404                 break;
2405         case CNIC_CTL_START_CMD:
2406                 cnic_hold(dev);
2407
2408                 if (!cnic_start_hw(dev))
2409                         cnic_ulp_start(dev);
2410
2411                 cnic_put(dev);
2412                 break;
2413         case CNIC_CTL_COMPLETION_CMD: {
2414                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
2415                 u32 l5_cid;
2416                 struct cnic_local *cp = dev->cnic_priv;
2417
2418                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
2419                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2420
2421                         ctx->wait_cond = 1;
2422                         wake_up(&ctx->waitq);
2423                 }
2424                 break;
2425         }
2426         default:
2427                 return -EINVAL;
2428         }
2429         return 0;
2430 }
2431
2432 static void cnic_ulp_init(struct cnic_dev *dev)
2433 {
2434         int i;
2435         struct cnic_local *cp = dev->cnic_priv;
2436
2437         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2438                 struct cnic_ulp_ops *ulp_ops;
2439
2440                 mutex_lock(&cnic_lock);
2441                 ulp_ops = cnic_ulp_tbl[i];
2442                 if (!ulp_ops || !ulp_ops->cnic_init) {
2443                         mutex_unlock(&cnic_lock);
2444                         continue;
2445                 }
2446                 ulp_get(ulp_ops);
2447                 mutex_unlock(&cnic_lock);
2448
2449                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2450                         ulp_ops->cnic_init(dev);
2451
2452                 ulp_put(ulp_ops);
2453         }
2454 }
2455
2456 static void cnic_ulp_exit(struct cnic_dev *dev)
2457 {
2458         int i;
2459         struct cnic_local *cp = dev->cnic_priv;
2460
2461         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2462                 struct cnic_ulp_ops *ulp_ops;
2463
2464                 mutex_lock(&cnic_lock);
2465                 ulp_ops = cnic_ulp_tbl[i];
2466                 if (!ulp_ops || !ulp_ops->cnic_exit) {
2467                         mutex_unlock(&cnic_lock);
2468                         continue;
2469                 }
2470                 ulp_get(ulp_ops);
2471                 mutex_unlock(&cnic_lock);
2472
2473                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2474                         ulp_ops->cnic_exit(dev);
2475
2476                 ulp_put(ulp_ops);
2477         }
2478 }
2479
2480 static int cnic_cm_offload_pg(struct cnic_sock *csk)
2481 {
2482         struct cnic_dev *dev = csk->dev;
2483         struct l4_kwq_offload_pg *l4kwqe;
2484         struct kwqe *wqes[1];
2485
2486         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
2487         memset(l4kwqe, 0, sizeof(*l4kwqe));
2488         wqes[0] = (struct kwqe *) l4kwqe;
2489
2490         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
2491         l4kwqe->flags =
2492                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
2493         l4kwqe->l2hdr_nbytes = ETH_HLEN;
2494
2495         l4kwqe->da0 = csk->ha[0];
2496         l4kwqe->da1 = csk->ha[1];
2497         l4kwqe->da2 = csk->ha[2];
2498         l4kwqe->da3 = csk->ha[3];
2499         l4kwqe->da4 = csk->ha[4];
2500         l4kwqe->da5 = csk->ha[5];
2501
2502         l4kwqe->sa0 = dev->mac_addr[0];
2503         l4kwqe->sa1 = dev->mac_addr[1];
2504         l4kwqe->sa2 = dev->mac_addr[2];
2505         l4kwqe->sa3 = dev->mac_addr[3];
2506         l4kwqe->sa4 = dev->mac_addr[4];
2507         l4kwqe->sa5 = dev->mac_addr[5];
2508
2509         l4kwqe->etype = ETH_P_IP;
2510         l4kwqe->ipid_start = DEF_IPID_START;
2511         l4kwqe->host_opaque = csk->l5_cid;
2512
2513         if (csk->vlan_id) {
2514                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
2515                 l4kwqe->vlan_tag = csk->vlan_id;
2516                 l4kwqe->l2hdr_nbytes += 4;
2517         }
2518
2519         return dev->submit_kwqes(dev, wqes, 1);
2520 }
2521
2522 static int cnic_cm_update_pg(struct cnic_sock *csk)
2523 {
2524         struct cnic_dev *dev = csk->dev;
2525         struct l4_kwq_update_pg *l4kwqe;
2526         struct kwqe *wqes[1];
2527
2528         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
2529         memset(l4kwqe, 0, sizeof(*l4kwqe));
2530         wqes[0] = (struct kwqe *) l4kwqe;
2531
2532         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
2533         l4kwqe->flags =
2534                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
2535         l4kwqe->pg_cid = csk->pg_cid;
2536
2537         l4kwqe->da0 = csk->ha[0];
2538         l4kwqe->da1 = csk->ha[1];
2539         l4kwqe->da2 = csk->ha[2];
2540         l4kwqe->da3 = csk->ha[3];
2541         l4kwqe->da4 = csk->ha[4];
2542         l4kwqe->da5 = csk->ha[5];
2543
2544         l4kwqe->pg_host_opaque = csk->l5_cid;
2545         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
2546
2547         return dev->submit_kwqes(dev, wqes, 1);
2548 }
2549
2550 static int cnic_cm_upload_pg(struct cnic_sock *csk)
2551 {
2552         struct cnic_dev *dev = csk->dev;
2553         struct l4_kwq_upload *l4kwqe;
2554         struct kwqe *wqes[1];
2555
2556         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
2557         memset(l4kwqe, 0, sizeof(*l4kwqe));
2558         wqes[0] = (struct kwqe *) l4kwqe;
2559
2560         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
2561         l4kwqe->flags =
2562                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
2563         l4kwqe->cid = csk->pg_cid;
2564
2565         return dev->submit_kwqes(dev, wqes, 1);
2566 }
2567
2568 static int cnic_cm_conn_req(struct cnic_sock *csk)
2569 {
2570         struct cnic_dev *dev = csk->dev;
2571         struct l4_kwq_connect_req1 *l4kwqe1;
2572         struct l4_kwq_connect_req2 *l4kwqe2;
2573         struct l4_kwq_connect_req3 *l4kwqe3;
2574         struct kwqe *wqes[3];
2575         u8 tcp_flags = 0;
2576         int num_wqes = 2;
2577
2578         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
2579         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
2580         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
2581         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
2582         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
2583         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
2584
2585         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
2586         l4kwqe3->flags =
2587                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
2588         l4kwqe3->ka_timeout = csk->ka_timeout;
2589         l4kwqe3->ka_interval = csk->ka_interval;
2590         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
2591         l4kwqe3->tos = csk->tos;
2592         l4kwqe3->ttl = csk->ttl;
2593         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
2594         l4kwqe3->pmtu = csk->mtu;
2595         l4kwqe3->rcv_buf = csk->rcv_buf;
2596         l4kwqe3->snd_buf = csk->snd_buf;
2597         l4kwqe3->seed = csk->seed;
2598
2599         wqes[0] = (struct kwqe *) l4kwqe1;
2600         if (test_bit(SK_F_IPV6, &csk->flags)) {
2601                 wqes[1] = (struct kwqe *) l4kwqe2;
2602                 wqes[2] = (struct kwqe *) l4kwqe3;
2603                 num_wqes = 3;
2604
2605                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
2606                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
2607                 l4kwqe2->flags =
2608                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
2609                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
2610                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
2611                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
2612                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
2613                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
2614                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
2615                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
2616                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
2617                                sizeof(struct tcphdr);
2618         } else {
2619                 wqes[1] = (struct kwqe *) l4kwqe3;
2620                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
2621                                sizeof(struct tcphdr);
2622         }
2623
2624         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
2625         l4kwqe1->flags =
2626                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
2627                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
2628         l4kwqe1->cid = csk->cid;
2629         l4kwqe1->pg_cid = csk->pg_cid;
2630         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
2631         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
2632         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
2633         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
2634         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
2635                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
2636         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
2637                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
2638         if (csk->tcp_flags & SK_TCP_NAGLE)
2639                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
2640         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
2641                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
2642         if (csk->tcp_flags & SK_TCP_SACK)
2643                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
2644         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
2645                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
2646
2647         l4kwqe1->tcp_flags = tcp_flags;
2648
2649         return dev->submit_kwqes(dev, wqes, num_wqes);
2650 }
2651
2652 static int cnic_cm_close_req(struct cnic_sock *csk)
2653 {
2654         struct cnic_dev *dev = csk->dev;
2655         struct l4_kwq_close_req *l4kwqe;
2656         struct kwqe *wqes[1];
2657
2658         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
2659         memset(l4kwqe, 0, sizeof(*l4kwqe));
2660         wqes[0] = (struct kwqe *) l4kwqe;
2661
2662         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
2663         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
2664         l4kwqe->cid = csk->cid;
2665
2666         return dev->submit_kwqes(dev, wqes, 1);
2667 }
2668
2669 static int cnic_cm_abort_req(struct cnic_sock *csk)
2670 {
2671         struct cnic_dev *dev = csk->dev;
2672         struct l4_kwq_reset_req *l4kwqe;
2673         struct kwqe *wqes[1];
2674
2675         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
2676         memset(l4kwqe, 0, sizeof(*l4kwqe));
2677         wqes[0] = (struct kwqe *) l4kwqe;
2678
2679         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
2680         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
2681         l4kwqe->cid = csk->cid;
2682
2683         return dev->submit_kwqes(dev, wqes, 1);
2684 }
2685
2686 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
2687                           u32 l5_cid, struct cnic_sock **csk, void *context)
2688 {
2689         struct cnic_local *cp = dev->cnic_priv;
2690         struct cnic_sock *csk1;
2691
2692         if (l5_cid >= MAX_CM_SK_TBL_SZ)
2693                 return -EINVAL;
2694
2695         csk1 = &cp->csk_tbl[l5_cid];
2696         if (atomic_read(&csk1->ref_count))
2697                 return -EAGAIN;
2698
2699         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
2700                 return -EBUSY;
2701
2702         csk1->dev = dev;
2703         csk1->cid = cid;
2704         csk1->l5_cid = l5_cid;
2705         csk1->ulp_type = ulp_type;
2706         csk1->context = context;
2707
2708         csk1->ka_timeout = DEF_KA_TIMEOUT;
2709         csk1->ka_interval = DEF_KA_INTERVAL;
2710         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
2711         csk1->tos = DEF_TOS;
2712         csk1->ttl = DEF_TTL;
2713         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
2714         csk1->rcv_buf = DEF_RCV_BUF;
2715         csk1->snd_buf = DEF_SND_BUF;
2716         csk1->seed = DEF_SEED;
2717
2718         *csk = csk1;
2719         return 0;
2720 }
2721
2722 static void cnic_cm_cleanup(struct cnic_sock *csk)
2723 {
2724         if (csk->src_port) {
2725                 struct cnic_dev *dev = csk->dev;
2726                 struct cnic_local *cp = dev->cnic_priv;
2727
2728                 cnic_free_id(&cp->csk_port_tbl, csk->src_port);
2729                 csk->src_port = 0;
2730         }
2731 }
2732
2733 static void cnic_close_conn(struct cnic_sock *csk)
2734 {
2735         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
2736                 cnic_cm_upload_pg(csk);
2737                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
2738         }
2739         cnic_cm_cleanup(csk);
2740 }
2741
2742 static int cnic_cm_destroy(struct cnic_sock *csk)
2743 {
2744         if (!cnic_in_use(csk))
2745                 return -EINVAL;
2746
2747         csk_hold(csk);
2748         clear_bit(SK_F_INUSE, &csk->flags);
2749         smp_mb__after_clear_bit();
2750         while (atomic_read(&csk->ref_count) != 1)
2751                 msleep(1);
2752         cnic_cm_cleanup(csk);
2753
2754         csk->flags = 0;
2755         csk_put(csk);
2756         return 0;
2757 }
2758
2759 static inline u16 cnic_get_vlan(struct net_device *dev,
2760                                 struct net_device **vlan_dev)
2761 {
2762         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2763                 *vlan_dev = vlan_dev_real_dev(dev);
2764                 return vlan_dev_vlan_id(dev);
2765         }
2766         *vlan_dev = dev;
2767         return 0;
2768 }
2769
2770 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
2771                              struct dst_entry **dst)
2772 {
2773 #if defined(CONFIG_INET)
2774         struct flowi fl;
2775         int err;
2776         struct rtable *rt;
2777
2778         memset(&fl, 0, sizeof(fl));
2779         fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
2780
2781         err = ip_route_output_key(&init_net, &rt, &fl);
2782         if (!err)
2783                 *dst = &rt->u.dst;
2784         return err;
2785 #else
2786         return -ENETUNREACH;
2787 #endif
2788 }
2789
2790 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
2791                              struct dst_entry **dst)
2792 {
2793 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2794         struct flowi fl;
2795
2796         memset(&fl, 0, sizeof(fl));
2797         ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
2798         if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
2799                 fl.oif = dst_addr->sin6_scope_id;
2800
2801         *dst = ip6_route_output(&init_net, NULL, &fl);
2802         if (*dst)
2803                 return 0;
2804 #endif
2805
2806         return -ENETUNREACH;
2807 }
2808
2809 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
2810                                            int ulp_type)
2811 {
2812         struct cnic_dev *dev = NULL;
2813         struct dst_entry *dst;
2814         struct net_device *netdev = NULL;
2815         int err = -ENETUNREACH;
2816
2817         if (dst_addr->sin_family == AF_INET)
2818                 err = cnic_get_v4_route(dst_addr, &dst);
2819         else if (dst_addr->sin_family == AF_INET6) {
2820                 struct sockaddr_in6 *dst_addr6 =
2821                         (struct sockaddr_in6 *) dst_addr;
2822
2823                 err = cnic_get_v6_route(dst_addr6, &dst);
2824         } else
2825                 return NULL;
2826
2827         if (err)
2828                 return NULL;
2829
2830         if (!dst->dev)
2831                 goto done;
2832
2833         cnic_get_vlan(dst->dev, &netdev);
2834
2835         dev = cnic_from_netdev(netdev);
2836
2837 done:
2838         dst_release(dst);
2839         if (dev)
2840                 cnic_put(dev);
2841         return dev;
2842 }
2843
2844 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2845 {
2846         struct cnic_dev *dev = csk->dev;
2847         struct cnic_local *cp = dev->cnic_priv;
2848
2849         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
2850 }
2851
2852 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2853 {
2854         struct cnic_dev *dev = csk->dev;
2855         struct cnic_local *cp = dev->cnic_priv;
2856         int is_v6, err, rc = -ENETUNREACH;
2857         struct dst_entry *dst;
2858         struct net_device *realdev;
2859         u32 local_port;
2860
2861         if (saddr->local.v6.sin6_family == AF_INET6 &&
2862             saddr->remote.v6.sin6_family == AF_INET6)
2863                 is_v6 = 1;
2864         else if (saddr->local.v4.sin_family == AF_INET &&
2865                  saddr->remote.v4.sin_family == AF_INET)
2866                 is_v6 = 0;
2867         else
2868                 return -EINVAL;
2869
2870         clear_bit(SK_F_IPV6, &csk->flags);
2871
2872         if (is_v6) {
2873 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2874                 set_bit(SK_F_IPV6, &csk->flags);
2875                 err = cnic_get_v6_route(&saddr->remote.v6, &dst);
2876                 if (err)
2877                         return err;
2878
2879                 if (!dst || dst->error || !dst->dev)
2880                         goto err_out;
2881
2882                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
2883                        sizeof(struct in6_addr));
2884                 csk->dst_port = saddr->remote.v6.sin6_port;
2885                 local_port = saddr->local.v6.sin6_port;
2886 #else
2887                 return rc;
2888 #endif
2889
2890         } else {
2891                 err = cnic_get_v4_route(&saddr->remote.v4, &dst);
2892                 if (err)
2893                         return err;
2894
2895                 if (!dst || dst->error || !dst->dev)
2896                         goto err_out;
2897
2898                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
2899                 csk->dst_port = saddr->remote.v4.sin_port;
2900                 local_port = saddr->local.v4.sin_port;
2901         }
2902
2903         csk->vlan_id = cnic_get_vlan(dst->dev, &realdev);
2904         if (realdev != dev->netdev)
2905                 goto err_out;
2906
2907         if (local_port >= CNIC_LOCAL_PORT_MIN &&
2908             local_port < CNIC_LOCAL_PORT_MAX) {
2909                 if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
2910                         local_port = 0;
2911         } else
2912                 local_port = 0;
2913
2914         if (!local_port) {
2915                 local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
2916                 if (local_port == -1) {
2917                         rc = -ENOMEM;
2918                         goto err_out;
2919                 }
2920         }
2921         csk->src_port = local_port;
2922
2923         csk->mtu = dst_mtu(dst);
2924         rc = 0;
2925
2926 err_out:
2927         dst_release(dst);
2928         return rc;
2929 }
2930
2931 static void cnic_init_csk_state(struct cnic_sock *csk)
2932 {
2933         csk->state = 0;
2934         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
2935         clear_bit(SK_F_CLOSING, &csk->flags);
2936 }
2937
2938 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2939 {
2940         int err = 0;
2941
2942         if (!cnic_in_use(csk))
2943                 return -EINVAL;
2944
2945         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
2946                 return -EINVAL;
2947
2948         cnic_init_csk_state(csk);
2949
2950         err = cnic_get_route(csk, saddr);
2951         if (err)
2952                 goto err_out;
2953
2954         err = cnic_resolve_addr(csk, saddr);
2955         if (!err)
2956                 return 0;
2957
2958 err_out:
2959         clear_bit(SK_F_CONNECT_START, &csk->flags);
2960         return err;
2961 }
2962
2963 static int cnic_cm_abort(struct cnic_sock *csk)
2964 {
2965         struct cnic_local *cp = csk->dev->cnic_priv;
2966         u32 opcode;
2967
2968         if (!cnic_in_use(csk))
2969                 return -EINVAL;
2970
2971         if (cnic_abort_prep(csk))
2972                 return cnic_cm_abort_req(csk);
2973
2974         /* Getting here means that we haven't started connect, or
2975          * connect was not successful.
2976          */
2977
2978         csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2979         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
2980                 opcode = csk->state;
2981         else
2982                 opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
2983         cp->close_conn(csk, opcode);
2984
2985         return 0;
2986 }
2987
2988 static int cnic_cm_close(struct cnic_sock *csk)
2989 {
2990         if (!cnic_in_use(csk))
2991                 return -EINVAL;
2992
2993         if (cnic_close_prep(csk)) {
2994                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2995                 return cnic_cm_close_req(csk);
2996         }
2997         return 0;
2998 }
2999
3000 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3001                            u8 opcode)
3002 {
3003         struct cnic_ulp_ops *ulp_ops;
3004         int ulp_type = csk->ulp_type;
3005
3006         rcu_read_lock();
3007         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3008         if (ulp_ops) {
3009                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3010                         ulp_ops->cm_connect_complete(csk);
3011                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3012                         ulp_ops->cm_close_complete(csk);
3013                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3014                         ulp_ops->cm_remote_abort(csk);
3015                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3016                         ulp_ops->cm_abort_complete(csk);
3017                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3018                         ulp_ops->cm_remote_close(csk);
3019         }
3020         rcu_read_unlock();
3021 }
3022
3023 static int cnic_cm_set_pg(struct cnic_sock *csk)
3024 {
3025         if (cnic_offld_prep(csk)) {
3026                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3027                         cnic_cm_update_pg(csk);
3028                 else
3029                         cnic_cm_offload_pg(csk);
3030         }
3031         return 0;
3032 }
3033
3034 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3035 {
3036         struct cnic_local *cp = dev->cnic_priv;
3037         u32 l5_cid = kcqe->pg_host_opaque;
3038         u8 opcode = kcqe->op_code;
3039         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3040
3041         csk_hold(csk);
3042         if (!cnic_in_use(csk))
3043                 goto done;
3044
3045         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3046                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3047                 goto done;
3048         }
3049         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3050         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3051                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3052                 cnic_cm_upcall(cp, csk,
3053                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3054                 goto done;
3055         }
3056
3057         csk->pg_cid = kcqe->pg_cid;
3058         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3059         cnic_cm_conn_req(csk);
3060
3061 done:
3062         csk_put(csk);
3063 }
3064
3065 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3066 {
3067         struct cnic_local *cp = dev->cnic_priv;
3068         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3069         u8 opcode = l4kcqe->op_code;
3070         u32 l5_cid;
3071         struct cnic_sock *csk;
3072
3073         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3074             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3075                 cnic_cm_process_offld_pg(dev, l4kcqe);
3076                 return;
3077         }
3078
3079         l5_cid = l4kcqe->conn_id;
3080         if (opcode & 0x80)
3081                 l5_cid = l4kcqe->cid;
3082         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3083                 return;
3084
3085         csk = &cp->csk_tbl[l5_cid];
3086         csk_hold(csk);
3087
3088         if (!cnic_in_use(csk)) {
3089                 csk_put(csk);
3090                 return;
3091         }
3092
3093         switch (opcode) {
3094         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3095                 if (l4kcqe->status != 0) {
3096                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3097                         cnic_cm_upcall(cp, csk,
3098                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3099                 }
3100                 break;
3101         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3102                 if (l4kcqe->status == 0)
3103                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3104
3105                 smp_mb__before_clear_bit();
3106                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3107                 cnic_cm_upcall(cp, csk, opcode);
3108                 break;
3109
3110         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3111                 if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
3112                         cnic_cm_upcall(cp, csk, opcode);
3113                         break;
3114                 } else if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags))
3115                         csk->state = opcode;
3116                 /* fall through */
3117         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3118         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3119         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3120         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3121                 cp->close_conn(csk, opcode);
3122                 break;
3123
3124         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3125                 cnic_cm_upcall(cp, csk, opcode);
3126                 break;
3127         }
3128         csk_put(csk);
3129 }
3130
3131 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3132 {
3133         struct cnic_dev *dev = data;
3134         int i;
3135
3136         for (i = 0; i < num; i++)
3137                 cnic_cm_process_kcqe(dev, kcqe[i]);
3138 }
3139
3140 static struct cnic_ulp_ops cm_ulp_ops = {
3141         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3142 };
3143
3144 static void cnic_cm_free_mem(struct cnic_dev *dev)
3145 {
3146         struct cnic_local *cp = dev->cnic_priv;
3147
3148         kfree(cp->csk_tbl);
3149         cp->csk_tbl = NULL;
3150         cnic_free_id_tbl(&cp->csk_port_tbl);
3151 }
3152
3153 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3154 {
3155         struct cnic_local *cp = dev->cnic_priv;
3156
3157         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3158                               GFP_KERNEL);
3159         if (!cp->csk_tbl)
3160                 return -ENOMEM;
3161
3162         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3163                              CNIC_LOCAL_PORT_MIN)) {
3164                 cnic_cm_free_mem(dev);
3165                 return -ENOMEM;
3166         }
3167         return 0;
3168 }
3169
3170 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3171 {
3172         if ((opcode == csk->state) ||
3173             (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED &&
3174              csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) {
3175                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags))
3176                         return 1;
3177         }
3178         /* 57710+ only  workaround to handle unsolicited RESET_COMP
3179          * which will be treated like a RESET RCVD notification
3180          * which triggers the clean up procedure
3181          */
3182         else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
3183                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
3184                         csk->state = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
3185                         return 1;
3186                 }
3187         }
3188         return 0;
3189 }
3190
3191 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3192 {
3193         struct cnic_dev *dev = csk->dev;
3194         struct cnic_local *cp = dev->cnic_priv;
3195
3196         clear_bit(SK_F_CONNECT_START, &csk->flags);
3197         cnic_close_conn(csk);
3198         cnic_cm_upcall(cp, csk, opcode);
3199 }
3200
3201 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3202 {
3203 }
3204
3205 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3206 {
3207         u32 seed;
3208
3209         get_random_bytes(&seed, 4);
3210         cnic_ctx_wr(dev, 45, 0, seed);
3211         return 0;
3212 }
3213
3214 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3215 {
3216         struct cnic_dev *dev = csk->dev;
3217         struct cnic_local *cp = dev->cnic_priv;
3218         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3219         union l5cm_specific_data l5_data;
3220         u32 cmd = 0;
3221         int close_complete = 0;
3222
3223         switch (opcode) {
3224         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3225         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3226         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3227                 if (cnic_ready_to_close(csk, opcode))
3228                         cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3229                 break;
3230         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3231                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3232                 break;
3233         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3234                 close_complete = 1;
3235                 break;
3236         }
3237         if (cmd) {
3238                 memset(&l5_data, 0, sizeof(l5_data));
3239
3240                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3241                                     &l5_data);
3242         } else if (close_complete) {
3243                 ctx->timestamp = jiffies;
3244                 cnic_close_conn(csk);
3245                 cnic_cm_upcall(cp, csk, csk->state);
3246         }
3247 }
3248
3249 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3250 {
3251 }
3252
3253 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3254 {
3255         struct cnic_local *cp = dev->cnic_priv;
3256         int func = CNIC_FUNC(cp);
3257
3258         cnic_init_bnx2x_mac(dev);
3259         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3260
3261         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3262                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(func), 0);
3263
3264         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3265                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(func), 1);
3266         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3267                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(func),
3268                 DEF_MAX_DA_COUNT);
3269
3270         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3271                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(func), DEF_TTL);
3272         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3273                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(func), DEF_TOS);
3274         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3275                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(func), 2);
3276         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3277                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(func), DEF_SWS_TIMER);
3278
3279         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(func),
3280                 DEF_MAX_CWND);
3281         return 0;
3282 }
3283
3284 static int cnic_cm_open(struct cnic_dev *dev)
3285 {
3286         struct cnic_local *cp = dev->cnic_priv;
3287         int err;
3288
3289         err = cnic_cm_alloc_mem(dev);
3290         if (err)
3291                 return err;
3292
3293         err = cp->start_cm(dev);
3294
3295         if (err)
3296                 goto err_out;
3297
3298         dev->cm_create = cnic_cm_create;
3299         dev->cm_destroy = cnic_cm_destroy;
3300         dev->cm_connect = cnic_cm_connect;
3301         dev->cm_abort = cnic_cm_abort;
3302         dev->cm_close = cnic_cm_close;
3303         dev->cm_select_dev = cnic_cm_select_dev;
3304
3305         cp->ulp_handle[CNIC_ULP_L4] = dev;
3306         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
3307         return 0;
3308
3309 err_out:
3310         cnic_cm_free_mem(dev);
3311         return err;
3312 }
3313
3314 static int cnic_cm_shutdown(struct cnic_dev *dev)
3315 {
3316         struct cnic_local *cp = dev->cnic_priv;
3317         int i;
3318
3319         cp->stop_cm(dev);
3320
3321         if (!cp->csk_tbl)
3322                 return 0;
3323
3324         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
3325                 struct cnic_sock *csk = &cp->csk_tbl[i];
3326
3327                 clear_bit(SK_F_INUSE, &csk->flags);
3328                 cnic_cm_cleanup(csk);
3329         }
3330         cnic_cm_free_mem(dev);
3331
3332         return 0;
3333 }
3334
3335 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
3336 {
3337         struct cnic_local *cp = dev->cnic_priv;
3338         u32 cid_addr;
3339         int i;
3340
3341         if (CHIP_NUM(cp) == CHIP_NUM_5709)
3342                 return;
3343
3344         cid_addr = GET_CID_ADDR(cid);
3345
3346         for (i = 0; i < CTX_SIZE; i += 4)
3347                 cnic_ctx_wr(dev, cid_addr, i, 0);
3348 }
3349
3350 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
3351 {
3352         struct cnic_local *cp = dev->cnic_priv;
3353         int ret = 0, i;
3354         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
3355
3356         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3357                 return 0;
3358
3359         for (i = 0; i < cp->ctx_blks; i++) {
3360                 int j;
3361                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
3362                 u32 val;
3363
3364                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
3365
3366                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
3367                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
3368                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
3369                         (u64) cp->ctx_arr[i].mapping >> 32);
3370                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
3371                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
3372                 for (j = 0; j < 10; j++) {
3373
3374                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
3375                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
3376                                 break;
3377                         udelay(5);
3378                 }
3379                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
3380                         ret = -EBUSY;
3381                         break;
3382                 }
3383         }
3384         return ret;
3385 }
3386
3387 static void cnic_free_irq(struct cnic_dev *dev)
3388 {
3389         struct cnic_local *cp = dev->cnic_priv;
3390         struct cnic_eth_dev *ethdev = cp->ethdev;
3391
3392         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3393                 cp->disable_int_sync(dev);
3394                 tasklet_disable(&cp->cnic_irq_task);
3395                 free_irq(ethdev->irq_arr[0].vector, dev);
3396         }
3397 }
3398
3399 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
3400 {
3401         struct cnic_local *cp = dev->cnic_priv;
3402         struct cnic_eth_dev *ethdev = cp->ethdev;
3403
3404         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3405                 int err, i = 0;
3406                 int sblk_num = cp->status_blk_num;
3407                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
3408                            BNX2_HC_SB_CONFIG_1;
3409
3410                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
3411
3412                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
3413                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
3414                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
3415
3416                 cp->bnx2_status_blk = cp->status_blk;
3417                 cp->last_status_idx = cp->bnx2_status_blk->status_idx;
3418                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
3419                              (unsigned long) dev);
3420                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3421                                   "cnic", dev);
3422                 if (err) {
3423                         tasklet_disable(&cp->cnic_irq_task);
3424                         return err;
3425                 }
3426                 while (cp->bnx2_status_blk->status_completion_producer_index &&
3427                        i < 10) {
3428                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
3429                                 1 << (11 + sblk_num));
3430                         udelay(10);
3431                         i++;
3432                         barrier();
3433                 }
3434                 if (cp->bnx2_status_blk->status_completion_producer_index) {
3435                         cnic_free_irq(dev);
3436                         goto failed;
3437                 }
3438
3439         } else {
3440                 struct status_block *sblk = cp->status_blk;
3441                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
3442                 int i = 0;
3443
3444                 while (sblk->status_completion_producer_index && i < 10) {
3445                         CNIC_WR(dev, BNX2_HC_COMMAND,
3446                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
3447                         udelay(10);
3448                         i++;
3449                         barrier();
3450                 }
3451                 if (sblk->status_completion_producer_index)
3452                         goto failed;
3453
3454         }
3455         return 0;
3456
3457 failed:
3458         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
3459         return -EBUSY;
3460 }
3461
3462 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
3463 {
3464         struct cnic_local *cp = dev->cnic_priv;
3465         struct cnic_eth_dev *ethdev = cp->ethdev;
3466
3467         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3468                 return;
3469
3470         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3471                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3472 }
3473
3474 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
3475 {
3476         struct cnic_local *cp = dev->cnic_priv;
3477         struct cnic_eth_dev *ethdev = cp->ethdev;
3478
3479         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3480                 return;
3481
3482         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3483                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
3484         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
3485         synchronize_irq(ethdev->irq_arr[0].vector);
3486 }
3487
3488 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
3489 {
3490         struct cnic_local *cp = dev->cnic_priv;
3491         struct cnic_eth_dev *ethdev = cp->ethdev;
3492         u32 cid_addr, tx_cid, sb_id;
3493         u32 val, offset0, offset1, offset2, offset3;
3494         int i;
3495         struct tx_bd *txbd;
3496         dma_addr_t buf_map;
3497         struct status_block *s_blk = cp->status_blk;
3498
3499         sb_id = cp->status_blk_num;
3500         tx_cid = 20;
3501         cnic_init_context(dev, tx_cid);
3502         cnic_init_context(dev, tx_cid + 1);
3503         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
3504         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3505                 struct status_block_msix *sblk = cp->status_blk;
3506
3507                 tx_cid = TX_TSS_CID + sb_id - 1;
3508                 cnic_init_context(dev, tx_cid);
3509                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
3510                         (TX_TSS_CID << 7));
3511                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
3512         }
3513         cp->tx_cons = *cp->tx_cons_ptr;
3514
3515         cid_addr = GET_CID_ADDR(tx_cid);
3516         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
3517                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
3518
3519                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
3520                         cnic_ctx_wr(dev, cid_addr2, i, 0);
3521
3522                 offset0 = BNX2_L2CTX_TYPE_XI;
3523                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
3524                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
3525                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
3526         } else {
3527                 offset0 = BNX2_L2CTX_TYPE;
3528                 offset1 = BNX2_L2CTX_CMD_TYPE;
3529                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
3530                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
3531         }
3532         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
3533         cnic_ctx_wr(dev, cid_addr, offset0, val);
3534
3535         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
3536         cnic_ctx_wr(dev, cid_addr, offset1, val);
3537
3538         txbd = (struct tx_bd *) cp->l2_ring;
3539
3540         buf_map = cp->l2_buf_map;
3541         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
3542                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
3543                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3544         }
3545         val = (u64) cp->l2_ring_map >> 32;
3546         cnic_ctx_wr(dev, cid_addr, offset2, val);
3547         txbd->tx_bd_haddr_hi = val;
3548
3549         val = (u64) cp->l2_ring_map & 0xffffffff;
3550         cnic_ctx_wr(dev, cid_addr, offset3, val);
3551         txbd->tx_bd_haddr_lo = val;
3552 }
3553
3554 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
3555 {
3556         struct cnic_local *cp = dev->cnic_priv;
3557         struct cnic_eth_dev *ethdev = cp->ethdev;
3558         u32 cid_addr, sb_id, val, coal_reg, coal_val;
3559         int i;
3560         struct rx_bd *rxbd;
3561         struct status_block *s_blk = cp->status_blk;
3562
3563         sb_id = cp->status_blk_num;
3564         cnic_init_context(dev, 2);
3565         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
3566         coal_reg = BNX2_HC_COMMAND;
3567         coal_val = CNIC_RD(dev, coal_reg);
3568         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3569                 struct status_block_msix *sblk = cp->status_blk;
3570
3571                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
3572                 coal_reg = BNX2_HC_COALESCE_NOW;
3573                 coal_val = 1 << (11 + sb_id);
3574         }
3575         i = 0;
3576         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
3577                 CNIC_WR(dev, coal_reg, coal_val);
3578                 udelay(10);
3579                 i++;
3580                 barrier();
3581         }
3582         cp->rx_cons = *cp->rx_cons_ptr;
3583
3584         cid_addr = GET_CID_ADDR(2);
3585         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
3586               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
3587         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
3588
3589         if (sb_id == 0)
3590                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
3591         else
3592                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
3593         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
3594
3595         rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE);
3596         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
3597                 dma_addr_t buf_map;
3598                 int n = (i % cp->l2_rx_ring_size) + 1;
3599
3600                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3601                 rxbd->rx_bd_len = cp->l2_single_buf_size;
3602                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
3603                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
3604                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3605         }
3606         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3607         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
3608         rxbd->rx_bd_haddr_hi = val;
3609
3610         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3611         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
3612         rxbd->rx_bd_haddr_lo = val;
3613
3614         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
3615         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
3616 }
3617
3618 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
3619 {
3620         struct kwqe *wqes[1], l2kwqe;
3621
3622         memset(&l2kwqe, 0, sizeof(l2kwqe));
3623         wqes[0] = &l2kwqe;
3624         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) |
3625                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
3626                                KWQE_OPCODE_SHIFT) | 2;
3627         dev->submit_kwqes(dev, wqes, 1);
3628 }
3629
3630 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
3631 {
3632         struct cnic_local *cp = dev->cnic_priv;
3633         u32 val;
3634
3635         val = cp->func << 2;
3636
3637         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
3638
3639         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3640                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
3641         dev->mac_addr[0] = (u8) (val >> 8);
3642         dev->mac_addr[1] = (u8) val;
3643
3644         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
3645
3646         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3647                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
3648         dev->mac_addr[2] = (u8) (val >> 24);
3649         dev->mac_addr[3] = (u8) (val >> 16);
3650         dev->mac_addr[4] = (u8) (val >> 8);
3651         dev->mac_addr[5] = (u8) val;
3652
3653         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
3654
3655         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
3656         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3657                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
3658
3659         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
3660         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
3661         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
3662 }
3663
3664 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
3665 {
3666         struct cnic_local *cp = dev->cnic_priv;
3667         struct cnic_eth_dev *ethdev = cp->ethdev;
3668         struct status_block *sblk = cp->status_blk;
3669         u32 val;
3670         int err;
3671
3672         cnic_set_bnx2_mac(dev);
3673
3674         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
3675         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
3676         if (BCM_PAGE_BITS > 12)
3677                 val |= (12 - 8)  << 4;
3678         else
3679                 val |= (BCM_PAGE_BITS - 8)  << 4;
3680
3681         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
3682
3683         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
3684         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
3685         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
3686
3687         err = cnic_setup_5709_context(dev, 1);
3688         if (err)
3689                 return err;
3690
3691         cnic_init_context(dev, KWQ_CID);
3692         cnic_init_context(dev, KCQ_CID);
3693
3694         cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
3695         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
3696
3697         cp->max_kwq_idx = MAX_KWQ_IDX;
3698         cp->kwq_prod_idx = 0;
3699         cp->kwq_con_idx = 0;
3700         cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT;
3701
3702         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
3703                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
3704         else
3705                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
3706
3707         /* Initialize the kernel work queue context. */
3708         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3709               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3710         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val);
3711
3712         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
3713         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3714
3715         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
3716         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3717
3718         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
3719         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3720
3721         val = (u32) cp->kwq_info.pgtbl_map;
3722         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3723
3724         cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
3725         cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
3726
3727         cp->kcq_prod_idx = 0;
3728
3729         /* Initialize the kernel complete queue context. */
3730         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3731               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3732         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val);
3733
3734         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
3735         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3736
3737         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
3738         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3739
3740         val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32);
3741         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3742
3743         val = (u32) cp->kcq_info.pgtbl_map;
3744         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3745
3746         cp->int_num = 0;
3747         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3748                 u32 sb_id = cp->status_blk_num;
3749                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
3750
3751                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
3752                 cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3753                 cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3754         }
3755
3756         /* Enable Commnad Scheduler notification when we write to the
3757          * host producer index of the kernel contexts. */
3758         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
3759
3760         /* Enable Command Scheduler notification when we write to either
3761          * the Send Queue or Receive Queue producer indexes of the kernel
3762          * bypass contexts. */
3763         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
3764         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
3765
3766         /* Notify COM when the driver post an application buffer. */
3767         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
3768
3769         /* Set the CP and COM doorbells.  These two processors polls the
3770          * doorbell for a non zero value before running.  This must be done
3771          * after setting up the kernel queue contexts. */
3772         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
3773         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
3774
3775         cnic_init_bnx2_tx_ring(dev);
3776         cnic_init_bnx2_rx_ring(dev);
3777
3778         err = cnic_init_bnx2_irq(dev);
3779         if (err) {
3780                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
3781                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
3782                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
3783                 return err;
3784         }
3785
3786         return 0;
3787 }
3788
3789 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
3790 {
3791         struct cnic_local *cp = dev->cnic_priv;
3792         struct cnic_eth_dev *ethdev = cp->ethdev;
3793         u32 start_offset = ethdev->ctx_tbl_offset;
3794         int i;
3795
3796         for (i = 0; i < cp->ctx_blks; i++) {
3797                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
3798                 dma_addr_t map = ctx->mapping;
3799
3800                 if (cp->ctx_align) {
3801                         unsigned long mask = cp->ctx_align - 1;
3802
3803                         map = (map + mask) & ~mask;
3804                 }
3805
3806                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
3807         }
3808 }
3809
3810 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
3811 {
3812         struct cnic_local *cp = dev->cnic_priv;
3813         struct cnic_eth_dev *ethdev = cp->ethdev;
3814         int err = 0;
3815
3816         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
3817                      (unsigned long) dev);
3818         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3819                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3820                                   "cnic", dev);
3821                 if (err)
3822                         tasklet_disable(&cp->cnic_irq_task);
3823         }
3824         return err;
3825 }
3826
3827 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
3828 {
3829         struct cnic_local *cp = dev->cnic_priv;
3830         u8 sb_id = cp->status_blk_num;
3831         int port = CNIC_PORT(cp);
3832
3833         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
3834                  CSTORM_SB_HC_TIMEOUT_C_OFFSET(port, sb_id,
3835                                                HC_INDEX_C_ISCSI_EQ_CONS),
3836                  64 / 12);
3837         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
3838                   CSTORM_SB_HC_DISABLE_C_OFFSET(port, sb_id,
3839                                                 HC_INDEX_C_ISCSI_EQ_CONS), 0);
3840 }
3841
3842 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
3843 {
3844 }
3845
3846 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev)
3847 {
3848         struct cnic_local *cp = dev->cnic_priv;
3849         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) cp->l2_ring;
3850         struct eth_context *context;
3851         struct regpair context_addr;
3852         dma_addr_t buf_map;
3853         int func = CNIC_FUNC(cp);
3854         int port = CNIC_PORT(cp);
3855         int i;
3856         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3857         u32 val;
3858
3859         memset(txbd, 0, BCM_PAGE_SIZE);
3860
3861         buf_map = cp->l2_buf_map;
3862         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
3863                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
3864                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
3865
3866                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3867                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3868                 reg_bd->addr_hi = start_bd->addr_hi;
3869                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
3870                 start_bd->nbytes = cpu_to_le16(0x10);
3871                 start_bd->nbd = cpu_to_le16(3);
3872                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
3873                 start_bd->general_data = (UNICAST_ADDRESS <<
3874                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
3875                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
3876
3877         }
3878         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 1, &context_addr);
3879
3880         val = (u64) cp->l2_ring_map >> 32;
3881         txbd->next_bd.addr_hi = cpu_to_le32(val);
3882
3883         context->xstorm_st_context.tx_bd_page_base_hi = val;
3884
3885         val = (u64) cp->l2_ring_map & 0xffffffff;
3886         txbd->next_bd.addr_lo = cpu_to_le32(val);
3887
3888         context->xstorm_st_context.tx_bd_page_base_lo = val;
3889
3890         context->cstorm_st_context.sb_index_number =
3891                 HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS;
3892         context->cstorm_st_context.status_block_id = BNX2X_DEF_SB_ID;
3893
3894         context->xstorm_st_context.statistics_data = (cli |
3895                                 XSTORM_ETH_ST_CONTEXT_STATISTICS_ENABLE);
3896
3897         context->xstorm_ag_context.cdu_reserved =
3898                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3899                                         CDU_REGION_NUMBER_XCM_AG,
3900                                         ETH_CONNECTION_TYPE);
3901
3902         /* reset xstorm per client statistics */
3903         val = BAR_XSTRORM_INTMEM +
3904               XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3905         for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
3906                 CNIC_WR(dev, val + i * 4, 0);
3907
3908         cp->tx_cons_ptr =
3909                 &cp->bnx2x_def_status_blk->c_def_status_block.index_values[
3910                         HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS];
3911 }
3912
3913 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev)
3914 {
3915         struct cnic_local *cp = dev->cnic_priv;
3916         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (cp->l2_ring +
3917                                 BCM_PAGE_SIZE);
3918         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
3919                                 (cp->l2_ring + (2 * BCM_PAGE_SIZE));
3920         struct eth_context *context;
3921         struct regpair context_addr;
3922         int i;
3923         int port = CNIC_PORT(cp);
3924         int func = CNIC_FUNC(cp);
3925         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3926         u32 val;
3927         struct tstorm_eth_client_config tstorm_client = {0};
3928
3929         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
3930                 dma_addr_t buf_map;
3931                 int n = (i % cp->l2_rx_ring_size) + 1;
3932
3933                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3934                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3935                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3936         }
3937         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 0, &context_addr);
3938
3939         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3940         rxbd->addr_hi = cpu_to_le32(val);
3941
3942         context->ustorm_st_context.common.bd_page_base_hi = val;
3943
3944         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3945         rxbd->addr_lo = cpu_to_le32(val);
3946
3947         context->ustorm_st_context.common.bd_page_base_lo = val;
3948
3949         context->ustorm_st_context.common.sb_index_numbers =
3950                                                 BNX2X_ISCSI_RX_SB_INDEX_NUM;
3951         context->ustorm_st_context.common.clientId = cli;
3952         context->ustorm_st_context.common.status_block_id = BNX2X_DEF_SB_ID;
3953         context->ustorm_st_context.common.flags =
3954                 USTORM_ETH_ST_CONTEXT_CONFIG_ENABLE_STATISTICS;
3955         context->ustorm_st_context.common.statistics_counter_id = cli;
3956         context->ustorm_st_context.common.mc_alignment_log_size = 0;
3957         context->ustorm_st_context.common.bd_buff_size =
3958                                                 cp->l2_single_buf_size;
3959
3960         context->ustorm_ag_context.cdu_usage =
3961                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3962                                         CDU_REGION_NUMBER_UCM_AG,
3963                                         ETH_CONNECTION_TYPE);
3964
3965         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
3966         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
3967         rxcqe->addr_hi = cpu_to_le32(val);
3968
3969         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3970                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli) + 4, val);
3971
3972         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3973                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli) + 4, val);
3974
3975         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
3976         rxcqe->addr_lo = cpu_to_le32(val);
3977
3978         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3979                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli), val);
3980
3981         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3982                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli), val);
3983
3984         /* client tstorm info */
3985         tstorm_client.mtu = cp->l2_single_buf_size - 14;
3986         tstorm_client.config_flags =
3987                         (TSTORM_ETH_CLIENT_CONFIG_E1HOV_REM_ENABLE |
3988                         TSTORM_ETH_CLIENT_CONFIG_STATSITICS_ENABLE);
3989         tstorm_client.statistics_counter_id = cli;
3990
3991         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
3992                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli),
3993                    ((u32 *)&tstorm_client)[0]);
3994         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
3995                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli) + 4,
3996                    ((u32 *)&tstorm_client)[1]);
3997
3998         /* reset tstorm per client statistics */
3999         val = BAR_TSTRORM_INTMEM +
4000               TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4001         for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
4002                 CNIC_WR(dev, val + i * 4, 0);
4003
4004         /* reset ustorm per client statistics */
4005         val = BAR_USTRORM_INTMEM +
4006               USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4007         for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
4008                 CNIC_WR(dev, val + i * 4, 0);
4009
4010         cp->rx_cons_ptr =
4011                 &cp->bnx2x_def_status_blk->u_def_status_block.index_values[
4012                         HC_INDEX_DEF_U_ETH_ISCSI_RX_CQ_CONS];
4013 }
4014
4015 static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
4016 {
4017         struct cnic_local *cp = dev->cnic_priv;
4018         u32 base, addr, val;
4019         int port = CNIC_PORT(cp);
4020
4021         dev->max_iscsi_conn = 0;
4022         base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
4023         if (base < 0xa0000 || base >= 0xc0000)
4024                 return;
4025
4026         addr = BNX2X_SHMEM_ADDR(base,
4027                 dev_info.port_hw_config[port].iscsi_mac_upper);
4028
4029         val = CNIC_RD(dev, addr);
4030
4031         dev->mac_addr[0] = (u8) (val >> 8);
4032         dev->mac_addr[1] = (u8) val;
4033
4034         addr = BNX2X_SHMEM_ADDR(base,
4035                 dev_info.port_hw_config[port].iscsi_mac_lower);
4036
4037         val = CNIC_RD(dev, addr);
4038
4039         dev->mac_addr[2] = (u8) (val >> 24);
4040         dev->mac_addr[3] = (u8) (val >> 16);
4041         dev->mac_addr[4] = (u8) (val >> 8);
4042         dev->mac_addr[5] = (u8) val;
4043
4044         addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
4045         val = CNIC_RD(dev, addr);
4046
4047         if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
4048                 u16 val16;
4049
4050                 addr = BNX2X_SHMEM_ADDR(base,
4051                                 drv_lic_key[port].max_iscsi_init_conn);
4052                 val16 = CNIC_RD16(dev, addr);
4053
4054                 if (val16)
4055                         val16 ^= 0x1e1e;
4056                 dev->max_iscsi_conn = val16;
4057         }
4058         if (BNX2X_CHIP_IS_E1H(cp->chip_id)) {
4059                 int func = CNIC_FUNC(cp);
4060
4061                 addr = BNX2X_SHMEM_ADDR(base,
4062                                 mf_cfg.func_mf_config[func].e1hov_tag);
4063                 val = CNIC_RD(dev, addr);
4064                 val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
4065                 if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
4066                         addr = BNX2X_SHMEM_ADDR(base,
4067                                 mf_cfg.func_mf_config[func].config);
4068                         val = CNIC_RD(dev, addr);
4069                         val &= FUNC_MF_CFG_PROTOCOL_MASK;
4070                         if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
4071                                 dev->max_iscsi_conn = 0;
4072                 }
4073         }
4074 }
4075
4076 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4077 {
4078         struct cnic_local *cp = dev->cnic_priv;
4079         int func = CNIC_FUNC(cp), ret, i;
4080         int port = CNIC_PORT(cp);
4081         u16 eq_idx;
4082         u8 sb_id = cp->status_blk_num;
4083
4084         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4085                                BNX2X_ISCSI_START_CID);
4086
4087         if (ret)
4088                 return -ENOMEM;
4089
4090         cp->kcq_io_addr = BAR_CSTRORM_INTMEM +
4091                           CSTORM_ISCSI_EQ_PROD_OFFSET(func, 0);
4092         cp->kcq_prod_idx = 0;
4093
4094         cnic_get_bnx2x_iscsi_info(dev);
4095
4096         /* Only 1 EQ */
4097         CNIC_WR16(dev, cp->kcq_io_addr, MAX_KCQ_IDX);
4098         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4099                 CSTORM_ISCSI_EQ_CONS_OFFSET(func, 0), 0);
4100         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4101                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0),
4102                 cp->kcq_info.pg_map_arr[1] & 0xffffffff);
4103         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4104                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0) + 4,
4105                 (u64) cp->kcq_info.pg_map_arr[1] >> 32);
4106         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4107                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0),
4108                 cp->kcq_info.pg_map_arr[0] & 0xffffffff);
4109         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4110                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0) + 4,
4111                 (u64) cp->kcq_info.pg_map_arr[0] >> 32);
4112         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4113                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(func, 0), 1);
4114         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4115                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(func, 0), cp->status_blk_num);
4116         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4117                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(func, 0),
4118                 HC_INDEX_C_ISCSI_EQ_CONS);
4119
4120         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4121                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4122                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i),
4123                         cp->conn_buf_info.pgtbl[2 * i]);
4124                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4125                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i) + 4,
4126                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4127         }
4128
4129         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4130                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func),
4131                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4132         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4133                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func) + 4,
4134                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4135
4136         cnic_setup_bnx2x_context(dev);
4137
4138         eq_idx = CNIC_RD16(dev, BAR_CSTRORM_INTMEM +
4139                            CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4140                            offsetof(struct cstorm_status_block_c,
4141                                     index_values[HC_INDEX_C_ISCSI_EQ_CONS]));
4142         if (eq_idx != 0) {
4143                 netdev_err(dev->netdev, "EQ cons index %x != 0\n", eq_idx);
4144                 return -EBUSY;
4145         }
4146         ret = cnic_init_bnx2x_irq(dev);
4147         if (ret)
4148                 return ret;
4149
4150         cnic_init_bnx2x_tx_ring(dev);
4151         cnic_init_bnx2x_rx_ring(dev);
4152
4153         return 0;
4154 }
4155
4156 static void cnic_init_rings(struct cnic_dev *dev)
4157 {
4158         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4159                 cnic_init_bnx2_tx_ring(dev);
4160                 cnic_init_bnx2_rx_ring(dev);
4161         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4162                 struct cnic_local *cp = dev->cnic_priv;
4163                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4164                 union l5cm_specific_data l5_data;
4165                 struct ustorm_eth_rx_producers rx_prods = {0};
4166                 u32 off, i;
4167
4168                 rx_prods.bd_prod = 0;
4169                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4170                 barrier();
4171
4172                 off = BAR_USTRORM_INTMEM +
4173                         USTORM_RX_PRODS_OFFSET(CNIC_PORT(cp), cli);
4174
4175                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4176                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4177
4178                 cnic_init_bnx2x_tx_ring(dev);
4179                 cnic_init_bnx2x_rx_ring(dev);
4180
4181                 l5_data.phy_address.lo = cli;
4182                 l5_data.phy_address.hi = 0;
4183                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4184                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4185                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
4186         }
4187 }
4188
4189 static void cnic_shutdown_rings(struct cnic_dev *dev)
4190 {
4191         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4192                 cnic_shutdown_bnx2_rx_ring(dev);
4193         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4194                 struct cnic_local *cp = dev->cnic_priv;
4195                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4196                 union l5cm_specific_data l5_data;
4197
4198                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0);
4199
4200                 l5_data.phy_address.lo = cli;
4201                 l5_data.phy_address.hi = 0;
4202                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4203                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4204                 msleep(10);
4205
4206                 memset(&l5_data, 0, sizeof(l5_data));
4207                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
4208                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE |
4209                         (1 << SPE_HDR_COMMON_RAMROD_SHIFT), &l5_data);
4210                 msleep(10);
4211         }
4212 }
4213
4214 static int cnic_register_netdev(struct cnic_dev *dev)
4215 {
4216         struct cnic_local *cp = dev->cnic_priv;
4217         struct cnic_eth_dev *ethdev = cp->ethdev;
4218         int err;
4219
4220         if (!ethdev)
4221                 return -ENODEV;
4222
4223         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
4224                 return 0;
4225
4226         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4227         if (err)
4228                 netdev_err(dev->netdev, "register_cnic failed\n");
4229
4230         return err;
4231 }
4232
4233 static void cnic_unregister_netdev(struct cnic_dev *dev)
4234 {
4235         struct cnic_local *cp = dev->cnic_priv;
4236         struct cnic_eth_dev *ethdev = cp->ethdev;
4237
4238         if (!ethdev)
4239                 return;
4240
4241         ethdev->drv_unregister_cnic(dev->netdev);
4242 }
4243
4244 static int cnic_start_hw(struct cnic_dev *dev)
4245 {
4246         struct cnic_local *cp = dev->cnic_priv;
4247         struct cnic_eth_dev *ethdev = cp->ethdev;
4248         int err;
4249
4250         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
4251                 return -EALREADY;
4252
4253         dev->regview = ethdev->io_base;
4254         cp->chip_id = ethdev->chip_id;
4255         pci_dev_get(dev->pcidev);
4256         cp->func = PCI_FUNC(dev->pcidev->devfn);
4257         cp->status_blk = ethdev->irq_arr[0].status_blk;
4258         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
4259
4260         err = cp->alloc_resc(dev);
4261         if (err) {
4262                 netdev_err(dev->netdev, "allocate resource failure\n");
4263                 goto err1;
4264         }
4265
4266         err = cp->start_hw(dev);
4267         if (err)
4268                 goto err1;
4269
4270         err = cnic_cm_open(dev);
4271         if (err)
4272                 goto err1;
4273
4274         set_bit(CNIC_F_CNIC_UP, &dev->flags);
4275
4276         cp->enable_int(dev);
4277
4278         return 0;
4279
4280 err1:
4281         cp->free_resc(dev);
4282         pci_dev_put(dev->pcidev);
4283         return err;
4284 }
4285
4286 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
4287 {
4288         cnic_disable_bnx2_int_sync(dev);
4289
4290         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4291         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4292
4293         cnic_init_context(dev, KWQ_CID);
4294         cnic_init_context(dev, KCQ_CID);
4295
4296         cnic_setup_5709_context(dev, 0);
4297         cnic_free_irq(dev);
4298
4299         cnic_free_resc(dev);
4300 }
4301
4302
4303 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
4304 {
4305         struct cnic_local *cp = dev->cnic_priv;
4306         u8 sb_id = cp->status_blk_num;
4307         int port = CNIC_PORT(cp);
4308
4309         cnic_free_irq(dev);
4310         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4311                   CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4312                   offsetof(struct cstorm_status_block_c,
4313                            index_values[HC_INDEX_C_ISCSI_EQ_CONS]),
4314                   0);
4315         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4316                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->func, 0), 0);
4317         CNIC_WR16(dev, cp->kcq_io_addr, 0);
4318         cnic_free_resc(dev);
4319 }
4320
4321 static void cnic_stop_hw(struct cnic_dev *dev)
4322 {
4323         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4324                 struct cnic_local *cp = dev->cnic_priv;
4325
4326                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
4327                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
4328                 synchronize_rcu();
4329                 cnic_cm_shutdown(dev);
4330                 cp->stop_hw(dev);
4331                 pci_dev_put(dev->pcidev);
4332         }
4333 }
4334
4335 static void cnic_free_dev(struct cnic_dev *dev)
4336 {
4337         int i = 0;
4338
4339         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
4340                 msleep(100);
4341                 i++;
4342         }
4343         if (atomic_read(&dev->ref_count) != 0)
4344                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
4345
4346         netdev_info(dev->netdev, "Removed CNIC device\n");
4347         dev_put(dev->netdev);
4348         kfree(dev);
4349 }
4350
4351 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
4352                                        struct pci_dev *pdev)
4353 {
4354         struct cnic_dev *cdev;
4355         struct cnic_local *cp;
4356         int alloc_size;
4357
4358         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
4359
4360         cdev = kzalloc(alloc_size , GFP_KERNEL);
4361         if (cdev == NULL) {
4362                 netdev_err(dev, "allocate dev struct failure\n");
4363                 return NULL;
4364         }
4365
4366         cdev->netdev = dev;
4367         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
4368         cdev->register_device = cnic_register_device;
4369         cdev->unregister_device = cnic_unregister_device;
4370         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
4371
4372         cp = cdev->cnic_priv;
4373         cp->dev = cdev;
4374         cp->uio_dev = -1;
4375         cp->l2_single_buf_size = 0x400;
4376         cp->l2_rx_ring_size = 3;
4377
4378         spin_lock_init(&cp->cnic_ulp_lock);
4379
4380         netdev_info(dev, "Added CNIC device\n");
4381
4382         return cdev;
4383 }
4384
4385 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
4386 {
4387         struct pci_dev *pdev;
4388         struct cnic_dev *cdev;
4389         struct cnic_local *cp;
4390         struct cnic_eth_dev *ethdev = NULL;
4391         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4392
4393         probe = symbol_get(bnx2_cnic_probe);
4394         if (probe) {
4395                 ethdev = (*probe)(dev);
4396                 symbol_put(bnx2_cnic_probe);
4397         }
4398         if (!ethdev)
4399                 return NULL;
4400
4401         pdev = ethdev->pdev;
4402         if (!pdev)
4403                 return NULL;
4404
4405         dev_hold(dev);
4406         pci_dev_get(pdev);
4407         if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
4408             pdev->device == PCI_DEVICE_ID_NX2_5709S) {
4409                 u8 rev;
4410
4411                 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
4412                 if (rev < 0x10) {
4413                         pci_dev_put(pdev);
4414                         goto cnic_err;
4415                 }
4416         }
4417         pci_dev_put(pdev);
4418
4419         cdev = cnic_alloc_dev(dev, pdev);
4420         if (cdev == NULL)
4421                 goto cnic_err;
4422
4423         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
4424         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
4425
4426         cp = cdev->cnic_priv;
4427         cp->ethdev = ethdev;
4428         cdev->pcidev = pdev;
4429
4430         cp->cnic_ops = &cnic_bnx2_ops;
4431         cp->start_hw = cnic_start_bnx2_hw;
4432         cp->stop_hw = cnic_stop_bnx2_hw;
4433         cp->setup_pgtbl = cnic_setup_page_tbl;
4434         cp->alloc_resc = cnic_alloc_bnx2_resc;
4435         cp->free_resc = cnic_free_resc;
4436         cp->start_cm = cnic_cm_init_bnx2_hw;
4437         cp->stop_cm = cnic_cm_stop_bnx2_hw;
4438         cp->enable_int = cnic_enable_bnx2_int;
4439         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
4440         cp->close_conn = cnic_close_bnx2_conn;
4441         cp->next_idx = cnic_bnx2_next_idx;
4442         cp->hw_idx = cnic_bnx2_hw_idx;
4443         return cdev;
4444
4445 cnic_err:
4446         dev_put(dev);
4447         return NULL;
4448 }
4449
4450 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
4451 {
4452         struct pci_dev *pdev;
4453         struct cnic_dev *cdev;
4454         struct cnic_local *cp;
4455         struct cnic_eth_dev *ethdev = NULL;
4456         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4457
4458         probe = symbol_get(bnx2x_cnic_probe);
4459         if (probe) {
4460                 ethdev = (*probe)(dev);
4461                 symbol_put(bnx2x_cnic_probe);
4462         }
4463         if (!ethdev)
4464                 return NULL;
4465
4466         pdev = ethdev->pdev;
4467         if (!pdev)
4468                 return NULL;
4469
4470         dev_hold(dev);
4471         cdev = cnic_alloc_dev(dev, pdev);
4472         if (cdev == NULL) {
4473                 dev_put(dev);
4474                 return NULL;
4475         }
4476
4477         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
4478         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
4479
4480         cp = cdev->cnic_priv;
4481         cp->ethdev = ethdev;
4482         cdev->pcidev = pdev;
4483
4484         cp->cnic_ops = &cnic_bnx2x_ops;
4485         cp->start_hw = cnic_start_bnx2x_hw;
4486         cp->stop_hw = cnic_stop_bnx2x_hw;
4487         cp->setup_pgtbl = cnic_setup_page_tbl_le;
4488         cp->alloc_resc = cnic_alloc_bnx2x_resc;
4489         cp->free_resc = cnic_free_resc;
4490         cp->start_cm = cnic_cm_init_bnx2x_hw;
4491         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
4492         cp->enable_int = cnic_enable_bnx2x_int;
4493         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
4494         cp->ack_int = cnic_ack_bnx2x_msix;
4495         cp->close_conn = cnic_close_bnx2x_conn;
4496         cp->next_idx = cnic_bnx2x_next_idx;
4497         cp->hw_idx = cnic_bnx2x_hw_idx;
4498         return cdev;
4499 }
4500
4501 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
4502 {
4503         struct ethtool_drvinfo drvinfo;
4504         struct cnic_dev *cdev = NULL;
4505
4506         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
4507                 memset(&drvinfo, 0, sizeof(drvinfo));
4508                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
4509
4510                 if (!strcmp(drvinfo.driver, "bnx2"))
4511                         cdev = init_bnx2_cnic(dev);
4512                 if (!strcmp(drvinfo.driver, "bnx2x"))
4513                         cdev = init_bnx2x_cnic(dev);
4514                 if (cdev) {
4515                         write_lock(&cnic_dev_lock);
4516                         list_add(&cdev->list, &cnic_dev_list);
4517                         write_unlock(&cnic_dev_lock);
4518                 }
4519         }
4520         return cdev;
4521 }
4522
4523 /**
4524  * netdev event handler
4525  */
4526 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
4527                                                          void *ptr)
4528 {
4529         struct net_device *netdev = ptr;
4530         struct cnic_dev *dev;
4531         int if_type;
4532         int new_dev = 0;
4533
4534         dev = cnic_from_netdev(netdev);
4535
4536         if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
4537                 /* Check for the hot-plug device */
4538                 dev = is_cnic_dev(netdev);
4539                 if (dev) {
4540                         new_dev = 1;
4541                         cnic_hold(dev);
4542                 }
4543         }
4544         if (dev) {
4545                 struct cnic_local *cp = dev->cnic_priv;
4546
4547                 if (new_dev)
4548                         cnic_ulp_init(dev);
4549                 else if (event == NETDEV_UNREGISTER)
4550                         cnic_ulp_exit(dev);
4551
4552                 if (event == NETDEV_UP) {
4553                         if (cnic_register_netdev(dev) != 0) {
4554                                 cnic_put(dev);
4555                                 goto done;
4556                         }
4557                         if (!cnic_start_hw(dev))
4558                                 cnic_ulp_start(dev);
4559                 }
4560
4561                 rcu_read_lock();
4562                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
4563                         struct cnic_ulp_ops *ulp_ops;
4564                         void *ctx;
4565
4566                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
4567                         if (!ulp_ops || !ulp_ops->indicate_netevent)
4568                                 continue;
4569
4570                         ctx = cp->ulp_handle[if_type];
4571
4572                         ulp_ops->indicate_netevent(ctx, event);
4573                 }
4574                 rcu_read_unlock();
4575
4576                 if (event == NETDEV_GOING_DOWN) {
4577                         cnic_ulp_stop(dev);
4578                         cnic_stop_hw(dev);
4579                         cnic_unregister_netdev(dev);
4580                 } else if (event == NETDEV_UNREGISTER) {
4581                         write_lock(&cnic_dev_lock);
4582                         list_del_init(&dev->list);
4583                         write_unlock(&cnic_dev_lock);
4584
4585                         cnic_put(dev);
4586                         cnic_free_dev(dev);
4587                         goto done;
4588                 }
4589                 cnic_put(dev);
4590         }
4591 done:
4592         return NOTIFY_DONE;
4593 }
4594
4595 static struct notifier_block cnic_netdev_notifier = {
4596         .notifier_call = cnic_netdev_event
4597 };
4598
4599 static void cnic_release(void)
4600 {
4601         struct cnic_dev *dev;
4602
4603         while (!list_empty(&cnic_dev_list)) {
4604                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
4605                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4606                         cnic_ulp_stop(dev);
4607                         cnic_stop_hw(dev);
4608                 }
4609
4610                 cnic_ulp_exit(dev);
4611                 cnic_unregister_netdev(dev);
4612                 list_del_init(&dev->list);
4613                 cnic_free_dev(dev);
4614         }
4615 }
4616
4617 static int __init cnic_init(void)
4618 {
4619         int rc = 0;
4620
4621         pr_info("%s", version);
4622
4623         rc = register_netdevice_notifier(&cnic_netdev_notifier);
4624         if (rc) {
4625                 cnic_release();
4626                 return rc;
4627         }
4628
4629         return 0;
4630 }
4631
4632 static void __exit cnic_exit(void)
4633 {
4634         unregister_netdevice_notifier(&cnic_netdev_notifier);
4635         cnic_release();
4636         return;
4637 }
4638
4639 module_init(cnic_init);
4640 module_exit(cnic_exit);