drivers/net/cnic.c

   1 /* cnic.c: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2010 Broadcom Corporation
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation.
   8  *
   9  * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
  10  * Modified and maintained by: Michael Chan <mchan@broadcom.com>
  11  */
  12
  13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  14
  15 #include <linux/module.h>
  16
  17 #include <linux/kernel.h>
  18 #include <linux/errno.h>
  19 #include <linux/list.h>
  20 #include <linux/slab.h>
  21 #include <linux/pci.h>
  22 #include <linux/init.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/uio_driver.h>
  25 #include <linux/in.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/delay.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_vlan.h>
  30 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
  31 #define BCM_VLAN 1
  32 #endif
  33 #include <net/ip.h>
  34 #include <net/tcp.h>
  35 #include <net/route.h>
  36 #include <net/ipv6.h>
  37 #include <net/ip6_route.h>
  38 #include <net/ip6_checksum.h>
  39 #include <scsi/iscsi_if.h>
  40
  41 #include "cnic_if.h"
  42 #include "bnx2.h"
  43 #include "bnx2x/bnx2x_reg.h"
  44 #include "bnx2x/bnx2x_fw_defs.h"
  45 #include "bnx2x/bnx2x_hsi.h"
  46 #include "../scsi/bnx2i/57xx_iscsi_constants.h"
  47 #include "../scsi/bnx2i/57xx_iscsi_hsi.h"
  48 #include "cnic.h"
  49 #include "cnic_defs.h"
  50
  51 #define DRV_MODULE_NAME         "cnic"
  52
  53 static char version[] __devinitdata =
  54         "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  55
  56 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  57               "Chen (zongxi@broadcom.com");
  58 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
  59 MODULE_LICENSE("GPL");
  60 MODULE_VERSION(CNIC_MODULE_VERSION);
  61
  62 static LIST_HEAD(cnic_dev_list);
  63 static LIST_HEAD(cnic_udev_list);
  64 static DEFINE_RWLOCK(cnic_dev_lock);
  65 static DEFINE_MUTEX(cnic_lock);
  66
  67 static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  68
  69 static int cnic_service_bnx2(void *, void *);
  70 static int cnic_service_bnx2x(void *, void *);
  71 static int cnic_ctl(void *, struct cnic_ctl_info *);
  72
  73 static struct cnic_ops cnic_bnx2_ops = {
  74         .cnic_owner     = THIS_MODULE,
  75         .cnic_handler   = cnic_service_bnx2,
  76         .cnic_ctl       = cnic_ctl,
  77 };
  78
  79 static struct cnic_ops cnic_bnx2x_ops = {
  80         .cnic_owner     = THIS_MODULE,
  81         .cnic_handler   = cnic_service_bnx2x,
  82         .cnic_ctl       = cnic_ctl,
  83 };
  84
  85 static struct workqueue_struct *cnic_wq;
  86
  87 static void cnic_shutdown_rings(struct cnic_dev *);
  88 static void cnic_init_rings(struct cnic_dev *);
  89 static int cnic_cm_set_pg(struct cnic_sock *);
  90
  91 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
  92 {
  93         struct cnic_uio_dev *udev = uinfo->priv;
  94         struct cnic_dev *dev;
  95
  96         if (!capable(CAP_NET_ADMIN))
  97                 return -EPERM;
  98
  99         if (udev->uio_dev != -1)
 100                 return -EBUSY;
 101
 102         rtnl_lock();
 103         dev = udev->dev;
 104
 105         if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 106                 rtnl_unlock();
 107                 return -ENODEV;
 108         }
 109
 110         udev->uio_dev = iminor(inode);
 111
 112         cnic_shutdown_rings(dev);
 113         cnic_init_rings(dev);
 114         rtnl_unlock();
 115
 116         return 0;
 117 }
 118
 119 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 120 {
 121         struct cnic_uio_dev *udev = uinfo->priv;
 122
 123         udev->uio_dev = -1;
 124         return 0;
 125 }
 126
 127 static inline void cnic_hold(struct cnic_dev *dev)
 128 {
 129         atomic_inc(&dev->ref_count);
 130 }
 131
 132 static inline void cnic_put(struct cnic_dev *dev)
 133 {
 134         atomic_dec(&dev->ref_count);
 135 }
 136
 137 static inline void csk_hold(struct cnic_sock *csk)
 138 {
 139         atomic_inc(&csk->ref_count);
 140 }
 141
 142 static inline void csk_put(struct cnic_sock *csk)
 143 {
 144         atomic_dec(&csk->ref_count);
 145 }
 146
 147 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 148 {
 149         struct cnic_dev *cdev;
 150
 151         read_lock(&cnic_dev_lock);
 152         list_for_each_entry(cdev, &cnic_dev_list, list) {
 153                 if (netdev == cdev->netdev) {
 154                         cnic_hold(cdev);
 155                         read_unlock(&cnic_dev_lock);
 156                         return cdev;
 157                 }
 158         }
 159         read_unlock(&cnic_dev_lock);
 160         return NULL;
 161 }
 162
 163 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 164 {
 165         atomic_inc(&ulp_ops->ref_count);
 166 }
 167
 168 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 169 {
 170         atomic_dec(&ulp_ops->ref_count);
 171 }
 172
 173 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 174 {
 175         struct cnic_local *cp = dev->cnic_priv;
 176         struct cnic_eth_dev *ethdev = cp->ethdev;
 177         struct drv_ctl_info info;
 178         struct drv_ctl_io *io = &info.data.io;
 179
 180         info.cmd = DRV_CTL_CTX_WR_CMD;
 181         io->cid_addr = cid_addr;
 182         io->offset = off;
 183         io->data = val;
 184         ethdev->drv_ctl(dev->netdev, &info);
 185 }
 186
 187 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 188 {
 189         struct cnic_local *cp = dev->cnic_priv;
 190         struct cnic_eth_dev *ethdev = cp->ethdev;
 191         struct drv_ctl_info info;
 192         struct drv_ctl_io *io = &info.data.io;
 193
 194         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 195         io->offset = off;
 196         io->dma_addr = addr;
 197         ethdev->drv_ctl(dev->netdev, &info);
 198 }
 199
 200 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 201 {
 202         struct cnic_local *cp = dev->cnic_priv;
 203         struct cnic_eth_dev *ethdev = cp->ethdev;
 204         struct drv_ctl_info info;
 205         struct drv_ctl_l2_ring *ring = &info.data.ring;
 206
 207         if (start)
 208                 info.cmd = DRV_CTL_START_L2_CMD;
 209         else
 210                 info.cmd = DRV_CTL_STOP_L2_CMD;
 211
 212         ring->cid = cid;
 213         ring->client_id = cl_id;
 214         ethdev->drv_ctl(dev->netdev, &info);
 215 }
 216
 217 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 218 {
 219         struct cnic_local *cp = dev->cnic_priv;
 220         struct cnic_eth_dev *ethdev = cp->ethdev;
 221         struct drv_ctl_info info;
 222         struct drv_ctl_io *io = &info.data.io;
 223
 224         info.cmd = DRV_CTL_IO_WR_CMD;
 225         io->offset = off;
 226         io->data = val;
 227         ethdev->drv_ctl(dev->netdev, &info);
 228 }
 229
 230 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 231 {
 232         struct cnic_local *cp = dev->cnic_priv;
 233         struct cnic_eth_dev *ethdev = cp->ethdev;
 234         struct drv_ctl_info info;
 235         struct drv_ctl_io *io = &info.data.io;
 236
 237         info.cmd = DRV_CTL_IO_RD_CMD;
 238         io->offset = off;
 239         ethdev->drv_ctl(dev->netdev, &info);
 240         return io->data;
 241 }
 242
 243 static int cnic_in_use(struct cnic_sock *csk)
 244 {
 245         return test_bit(SK_F_INUSE, &csk->flags);
 246 }
 247
 248 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
 249 {
 250         struct cnic_local *cp = dev->cnic_priv;
 251         struct cnic_eth_dev *ethdev = cp->ethdev;
 252         struct drv_ctl_info info;
 253
 254         info.cmd = cmd;
 255         info.data.credit.credit_count = count;
 256         ethdev->drv_ctl(dev->netdev, &info);
 257 }
 258
 259 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 260 {
 261         u32 i;
 262
 263         for (i = 0; i < cp->max_cid_space; i++) {
 264                 if (cp->ctx_tbl[i].cid == cid) {
 265                         *l5_cid = i;
 266                         return 0;
 267                 }
 268         }
 269         return -EINVAL;
 270 }
 271
 272 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 273                            struct cnic_sock *csk)
 274 {
 275         struct iscsi_path path_req;
 276         char *buf = NULL;
 277         u16 len = 0;
 278         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 279         struct cnic_ulp_ops *ulp_ops;
 280         struct cnic_uio_dev *udev = cp->udev;
 281
 282         if (!udev || udev->uio_dev == -1)
 283                 return -ENODEV;
 284
 285         if (csk) {
 286                 len = sizeof(path_req);
 287                 buf = (char *) &path_req;
 288                 memset(&path_req, 0, len);
 289
 290                 msg_type = ISCSI_KEVENT_PATH_REQ;
 291                 path_req.handle = (u64) csk->l5_cid;
 292                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 293                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 294                                sizeof(struct in6_addr));
 295                         path_req.ip_addr_len = 16;
 296                 } else {
 297                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 298                                sizeof(struct in_addr));
 299                         path_req.ip_addr_len = 4;
 300                 }
 301                 path_req.vlan_id = csk->vlan_id;
 302                 path_req.pmtu = csk->mtu;
 303         }
 304
 305         rcu_read_lock();
 306         ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
 307         if (ulp_ops)
 308                 ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len);
 309         rcu_read_unlock();
 310         return 0;
 311 }
 312
 313 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 314                                   char *buf, u16 len)
 315 {
 316         int rc = -EINVAL;
 317
 318         switch (msg_type) {
 319         case ISCSI_UEVENT_PATH_UPDATE: {
 320                 struct cnic_local *cp;
 321                 u32 l5_cid;
 322                 struct cnic_sock *csk;
 323                 struct iscsi_path *path_resp;
 324
 325                 if (len < sizeof(*path_resp))
 326                         break;
 327
 328                 path_resp = (struct iscsi_path *) buf;
 329                 cp = dev->cnic_priv;
 330                 l5_cid = (u32) path_resp->handle;
 331                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 332                         break;
 333
 334                 rcu_read_lock();
 335                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
 336                         rc = -ENODEV;
 337                         rcu_read_unlock();
 338                         break;
 339                 }
 340                 csk = &cp->csk_tbl[l5_cid];
 341                 csk_hold(csk);
 342                 if (cnic_in_use(csk)) {
 343                         memcpy(csk->ha, path_resp->mac_addr, 6);
 344                         if (test_bit(SK_F_IPV6, &csk->flags))
 345                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 346                                        sizeof(struct in6_addr));
 347                         else
 348                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 349                                        sizeof(struct in_addr));
 350                         if (is_valid_ether_addr(csk->ha))
 351                                 cnic_cm_set_pg(csk);
 352                 }
 353                 csk_put(csk);
 354                 rcu_read_unlock();
 355                 rc = 0;
 356         }
 357         }
 358
 359         return rc;
 360 }
 361
 362 static int cnic_offld_prep(struct cnic_sock *csk)
 363 {
 364         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 365                 return 0;
 366
 367         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 368                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 369                 return 0;
 370         }
 371
 372         return 1;
 373 }
 374
 375 static int cnic_close_prep(struct cnic_sock *csk)
 376 {
 377         clear_bit(SK_F_CONNECT_START, &csk->flags);
 378         smp_mb__after_clear_bit();
 379
 380         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 381                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 382                         msleep(1);
 383
 384                 return 1;
 385         }
 386         return 0;
 387 }
 388
 389 static int cnic_abort_prep(struct cnic_sock *csk)
 390 {
 391         clear_bit(SK_F_CONNECT_START, &csk->flags);
 392         smp_mb__after_clear_bit();
 393
 394         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 395                 msleep(1);
 396
 397         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 398                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 399                 return 1;
 400         }
 401
 402         return 0;
 403 }
 404
 405 static void cnic_uio_stop(void)
 406 {
 407         struct cnic_dev *dev;
 408
 409         read_lock(&cnic_dev_lock);
 410         list_for_each_entry(dev, &cnic_dev_list, list) {
 411                 struct cnic_local *cp = dev->cnic_priv;
 412
 413                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 414         }
 415         read_unlock(&cnic_dev_lock);
 416 }
 417
 418 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 419 {
 420         struct cnic_dev *dev;
 421
 422         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 423                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 424                 return -EINVAL;
 425         }
 426         mutex_lock(&cnic_lock);
 427         if (cnic_ulp_tbl[ulp_type]) {
 428                 pr_err("%s: Type %d has already been registered\n",
 429                        __func__, ulp_type);
 430                 mutex_unlock(&cnic_lock);
 431                 return -EBUSY;
 432         }
 433
 434         read_lock(&cnic_dev_lock);
 435         list_for_each_entry(dev, &cnic_dev_list, list) {
 436                 struct cnic_local *cp = dev->cnic_priv;
 437
 438                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 439         }
 440         read_unlock(&cnic_dev_lock);
 441
 442         atomic_set(&ulp_ops->ref_count, 0);
 443         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 444         mutex_unlock(&cnic_lock);
 445
 446         /* Prevent race conditions with netdev_event */
 447         rtnl_lock();
 448         read_lock(&cnic_dev_lock);
 449         list_for_each_entry(dev, &cnic_dev_list, list) {
 450                 struct cnic_local *cp = dev->cnic_priv;
 451
 452                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 453                         ulp_ops->cnic_init(dev);
 454         }
 455         read_unlock(&cnic_dev_lock);
 456         rtnl_unlock();
 457
 458         return 0;
 459 }
 460
 461 int cnic_unregister_driver(int ulp_type)
 462 {
 463         struct cnic_dev *dev;
 464         struct cnic_ulp_ops *ulp_ops;
 465         int i = 0;
 466
 467         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 468                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 469                 return -EINVAL;
 470         }
 471         mutex_lock(&cnic_lock);
 472         ulp_ops = cnic_ulp_tbl[ulp_type];
 473         if (!ulp_ops) {
 474                 pr_err("%s: Type %d has not been registered\n",
 475                        __func__, ulp_type);
 476                 goto out_unlock;
 477         }
 478         read_lock(&cnic_dev_lock);
 479         list_for_each_entry(dev, &cnic_dev_list, list) {
 480                 struct cnic_local *cp = dev->cnic_priv;
 481
 482                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 483                         pr_err("%s: Type %d still has devices registered\n",
 484                                __func__, ulp_type);
 485                         read_unlock(&cnic_dev_lock);
 486                         goto out_unlock;
 487                 }
 488         }
 489         read_unlock(&cnic_dev_lock);
 490
 491         if (ulp_type == CNIC_ULP_ISCSI)
 492                 cnic_uio_stop();
 493
 494         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
 495
 496         mutex_unlock(&cnic_lock);
 497         synchronize_rcu();
 498         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 499                 msleep(100);
 500                 i++;
 501         }
 502
 503         if (atomic_read(&ulp_ops->ref_count) != 0)
 504                 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
 505         return 0;
 506
 507 out_unlock:
 508         mutex_unlock(&cnic_lock);
 509         return -EINVAL;
 510 }
 511
 512 static int cnic_start_hw(struct cnic_dev *);
 513 static void cnic_stop_hw(struct cnic_dev *);
 514
 515 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 516                                 void *ulp_ctx)
 517 {
 518         struct cnic_local *cp = dev->cnic_priv;
 519         struct cnic_ulp_ops *ulp_ops;
 520
 521         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 522                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 523                 return -EINVAL;
 524         }
 525         mutex_lock(&cnic_lock);
 526         if (cnic_ulp_tbl[ulp_type] == NULL) {
 527                 pr_err("%s: Driver with type %d has not been registered\n",
 528                        __func__, ulp_type);
 529                 mutex_unlock(&cnic_lock);
 530                 return -EAGAIN;
 531         }
 532         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 533                 pr_err("%s: Type %d has already been registered to this device\n",
 534                        __func__, ulp_type);
 535                 mutex_unlock(&cnic_lock);
 536                 return -EBUSY;
 537         }
 538
 539         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 540         cp->ulp_handle[ulp_type] = ulp_ctx;
 541         ulp_ops = cnic_ulp_tbl[ulp_type];
 542         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 543         cnic_hold(dev);
 544
 545         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 546                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 547                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 548
 549         mutex_unlock(&cnic_lock);
 550
 551         return 0;
 552
 553 }
 554 EXPORT_SYMBOL(cnic_register_driver);
 555
 556 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 557 {
 558         struct cnic_local *cp = dev->cnic_priv;
 559         int i = 0;
 560
 561         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 562                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 563                 return -EINVAL;
 564         }
 565         mutex_lock(&cnic_lock);
 566         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 567                 rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
 568                 cnic_put(dev);
 569         } else {
 570                 pr_err("%s: device not registered to this ulp type %d\n",
 571                        __func__, ulp_type);
 572                 mutex_unlock(&cnic_lock);
 573                 return -EINVAL;
 574         }
 575         mutex_unlock(&cnic_lock);
 576
 577         synchronize_rcu();
 578
 579         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 580                i < 20) {
 581                 msleep(100);
 582                 i++;
 583         }
 584         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 585                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 586
 587         return 0;
 588 }
 589 EXPORT_SYMBOL(cnic_unregister_driver);
 590
 591 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
 592 {
 593         id_tbl->start = start_id;
 594         id_tbl->max = size;
 595         id_tbl->next = 0;
 596         spin_lock_init(&id_tbl->lock);
 597         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 598         if (!id_tbl->table)
 599                 return -ENOMEM;
 600
 601         return 0;
 602 }
 603
 604 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 605 {
 606         kfree(id_tbl->table);
 607         id_tbl->table = NULL;
 608 }
 609
 610 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 611 {
 612         int ret = -1;
 613
 614         id -= id_tbl->start;
 615         if (id >= id_tbl->max)
 616                 return ret;
 617
 618         spin_lock(&id_tbl->lock);
 619         if (!test_bit(id, id_tbl->table)) {
 620                 set_bit(id, id_tbl->table);
 621                 ret = 0;
 622         }
 623         spin_unlock(&id_tbl->lock);
 624         return ret;
 625 }
 626
 627 /* Returns -1 if not successful */
 628 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 629 {
 630         u32 id;
 631
 632         spin_lock(&id_tbl->lock);
 633         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 634         if (id >= id_tbl->max) {
 635                 id = -1;
 636                 if (id_tbl->next != 0) {
 637                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 638                         if (id >= id_tbl->next)
 639                                 id = -1;
 640                 }
 641         }
 642
 643         if (id < id_tbl->max) {
 644                 set_bit(id, id_tbl->table);
 645                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 646                 id += id_tbl->start;
 647         }
 648
 649         spin_unlock(&id_tbl->lock);
 650
 651         return id;
 652 }
 653
 654 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 655 {
 656         if (id == -1)
 657                 return;
 658
 659         id -= id_tbl->start;
 660         if (id >= id_tbl->max)
 661                 return;
 662
 663         clear_bit(id, id_tbl->table);
 664 }
 665
 666 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 667 {
 668         int i;
 669
 670         if (!dma->pg_arr)
 671                 return;
 672
 673         for (i = 0; i < dma->num_pages; i++) {
 674                 if (dma->pg_arr[i]) {
 675                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
 676                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 677                         dma->pg_arr[i] = NULL;
 678                 }
 679         }
 680         if (dma->pgtbl) {
 681                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 682                                   dma->pgtbl, dma->pgtbl_map);
 683                 dma->pgtbl = NULL;
 684         }
 685         kfree(dma->pg_arr);
 686         dma->pg_arr = NULL;
 687         dma->num_pages = 0;
 688 }
 689
 690 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 691 {
 692         int i;
 693         u32 *page_table = dma->pgtbl;
 694
 695         for (i = 0; i < dma->num_pages; i++) {
 696                 /* Each entry needs to be in big endian format. */
 697                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 698                 page_table++;
 699                 *page_table = (u32) dma->pg_map_arr[i];
 700                 page_table++;
 701         }
 702 }
 703
 704 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 705 {
 706         int i;
 707         u32 *page_table = dma->pgtbl;
 708
 709         for (i = 0; i < dma->num_pages; i++) {
 710                 /* Each entry needs to be in little endian format. */
 711                 *page_table = dma->pg_map_arr[i] & 0xffffffff;
 712                 page_table++;
 713                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 714                 page_table++;
 715         }
 716 }
 717
 718 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 719                           int pages, int use_pg_tbl)
 720 {
 721         int i, size;
 722         struct cnic_local *cp = dev->cnic_priv;
 723
 724         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 725         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 726         if (dma->pg_arr == NULL)
 727                 return -ENOMEM;
 728
 729         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 730         dma->num_pages = pages;
 731
 732         for (i = 0; i < pages; i++) {
 733                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 734                                                     BCM_PAGE_SIZE,
 735                                                     &dma->pg_map_arr[i],
 736                                                     GFP_ATOMIC);
 737                 if (dma->pg_arr[i] == NULL)
 738                         goto error;
 739         }
 740         if (!use_pg_tbl)
 741                 return 0;
 742
 743         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 744                           ~(BCM_PAGE_SIZE - 1);
 745         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 746                                         &dma->pgtbl_map, GFP_ATOMIC);
 747         if (dma->pgtbl == NULL)
 748                 goto error;
 749
 750         cp->setup_pgtbl(dev, dma);
 751
 752         return 0;
 753
 754 error:
 755         cnic_free_dma(dev, dma);
 756         return -ENOMEM;
 757 }
 758
 759 static void cnic_free_context(struct cnic_dev *dev)
 760 {
 761         struct cnic_local *cp = dev->cnic_priv;
 762         int i;
 763
 764         for (i = 0; i < cp->ctx_blks; i++) {
 765                 if (cp->ctx_arr[i].ctx) {
 766                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 767                                           cp->ctx_arr[i].ctx,
 768                                           cp->ctx_arr[i].mapping);
 769                         cp->ctx_arr[i].ctx = NULL;
 770                 }
 771         }
 772 }
 773
 774 static void __cnic_free_uio(struct cnic_uio_dev *udev)
 775 {
 776         uio_unregister_device(&udev->cnic_uinfo);
 777
 778         if (udev->l2_buf) {
 779                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 780                                   udev->l2_buf, udev->l2_buf_map);
 781                 udev->l2_buf = NULL;
 782         }
 783
 784         if (udev->l2_ring) {
 785                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 786                                   udev->l2_ring, udev->l2_ring_map);
 787                 udev->l2_ring = NULL;
 788         }
 789
 790         pci_dev_put(udev->pdev);
 791         kfree(udev);
 792 }
 793
 794 static void cnic_free_uio(struct cnic_uio_dev *udev)
 795 {
 796         if (!udev)
 797                 return;
 798
 799         write_lock(&cnic_dev_lock);
 800         list_del_init(&udev->list);
 801         write_unlock(&cnic_dev_lock);
 802         __cnic_free_uio(udev);
 803 }
 804
 805 static void cnic_free_resc(struct cnic_dev *dev)
 806 {
 807         struct cnic_local *cp = dev->cnic_priv;
 808         struct cnic_uio_dev *udev = cp->udev;
 809
 810         if (udev) {
 811                 udev->dev = NULL;
 812                 cp->udev = NULL;
 813         }
 814
 815         cnic_free_context(dev);
 816         kfree(cp->ctx_arr);
 817         cp->ctx_arr = NULL;
 818         cp->ctx_blks = 0;
 819
 820         cnic_free_dma(dev, &cp->gbl_buf_info);
 821         cnic_free_dma(dev, &cp->conn_buf_info);
 822         cnic_free_dma(dev, &cp->kwq_info);
 823         cnic_free_dma(dev, &cp->kwq_16_data_info);
 824         cnic_free_dma(dev, &cp->kcq1.dma);
 825         kfree(cp->iscsi_tbl);
 826         cp->iscsi_tbl = NULL;
 827         kfree(cp->ctx_tbl);
 828         cp->ctx_tbl = NULL;
 829
 830         cnic_free_id_tbl(&cp->cid_tbl);
 831 }
 832
 833 static int cnic_alloc_context(struct cnic_dev *dev)
 834 {
 835         struct cnic_local *cp = dev->cnic_priv;
 836
 837         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 838                 int i, k, arr_size;
 839
 840                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 841                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 842                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 843                            sizeof(struct cnic_ctx);
 844                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 845                 if (cp->ctx_arr == NULL)
 846                         return -ENOMEM;
 847
 848                 k = 0;
 849                 for (i = 0; i < 2; i++) {
 850                         u32 j, reg, off, lo, hi;
 851
 852                         if (i == 0)
 853                                 off = BNX2_PG_CTX_MAP;
 854                         else
 855                                 off = BNX2_ISCSI_CTX_MAP;
 856
 857                         reg = cnic_reg_rd_ind(dev, off);
 858                         lo = reg >> 16;
 859                         hi = reg & 0xffff;
 860                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 861                                 cp->ctx_arr[k].cid = j;
 862                 }
 863
 864                 cp->ctx_blks = k;
 865                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 866                         cp->ctx_blks = 0;
 867                         return -ENOMEM;
 868                 }
 869
 870                 for (i = 0; i < cp->ctx_blks; i++) {
 871                         cp->ctx_arr[i].ctx =
 872                                 dma_alloc_coherent(&dev->pcidev->dev,
 873                                                    BCM_PAGE_SIZE,
 874                                                    &cp->ctx_arr[i].mapping,
 875                                                    GFP_KERNEL);
 876                         if (cp->ctx_arr[i].ctx == NULL)
 877                                 return -ENOMEM;
 878                 }
 879         }
 880         return 0;
 881 }
 882
 883 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info)
 884 {
 885         int err, i, is_bnx2 = 0;
 886         struct kcqe **kcq;
 887
 888         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags))
 889                 is_bnx2 = 1;
 890
 891         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, is_bnx2);
 892         if (err)
 893                 return err;
 894
 895         kcq = (struct kcqe **) info->dma.pg_arr;
 896         info->kcq = kcq;
 897
 898         if (is_bnx2)
 899                 return 0;
 900
 901         for (i = 0; i < KCQ_PAGE_CNT; i++) {
 902                 struct bnx2x_bd_chain_next *next =
 903                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
 904                 int j = i + 1;
 905
 906                 if (j >= KCQ_PAGE_CNT)
 907                         j = 0;
 908                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
 909                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
 910         }
 911         return 0;
 912 }
 913
 914 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
 915 {
 916         struct cnic_local *cp = dev->cnic_priv;
 917         struct cnic_uio_dev *udev;
 918
 919         read_lock(&cnic_dev_lock);
 920         list_for_each_entry(udev, &cnic_udev_list, list) {
 921                 if (udev->pdev == dev->pcidev) {
 922                         udev->dev = dev;
 923                         cp->udev = udev;
 924                         read_unlock(&cnic_dev_lock);
 925                         return 0;
 926                 }
 927         }
 928         read_unlock(&cnic_dev_lock);
 929
 930         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
 931         if (!udev)
 932                 return -ENOMEM;
 933
 934         udev->uio_dev = -1;
 935
 936         udev->dev = dev;
 937         udev->pdev = dev->pcidev;
 938         udev->l2_ring_size = pages * BCM_PAGE_SIZE;
 939         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
 940                                            &udev->l2_ring_map,
 941                                            GFP_KERNEL | __GFP_COMP);
 942         if (!udev->l2_ring)
 943                 return -ENOMEM;
 944
 945         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
 946         udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
 947         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
 948                                           &udev->l2_buf_map,
 949                                           GFP_KERNEL | __GFP_COMP);
 950         if (!udev->l2_buf)
 951                 return -ENOMEM;
 952
 953         write_lock(&cnic_dev_lock);
 954         list_add(&udev->list, &cnic_udev_list);
 955         write_unlock(&cnic_dev_lock);
 956
 957         pci_dev_get(udev->pdev);
 958
 959         cp->udev = udev;
 960
 961         return 0;
 962 }
 963
 964 static int cnic_init_uio(struct cnic_dev *dev)
 965 {
 966         struct cnic_local *cp = dev->cnic_priv;
 967         struct cnic_uio_dev *udev = cp->udev;
 968         struct uio_info *uinfo;
 969         int ret = 0;
 970
 971         if (!udev)
 972                 return -ENOMEM;
 973
 974         uinfo = &udev->cnic_uinfo;
 975
 976         uinfo->mem[0].addr = dev->netdev->base_addr;
 977         uinfo->mem[0].internal_addr = dev->regview;
 978         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
 979         uinfo->mem[0].memtype = UIO_MEM_PHYS;
 980
 981         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
 982                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
 983                                         PAGE_MASK;
 984                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
 985                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
 986                 else
 987                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
 988
 989                 uinfo->name = "bnx2_cnic";
 990         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
 991                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
 992                         PAGE_MASK;
 993                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
 994
 995                 uinfo->name = "bnx2x_cnic";
 996         }
 997
 998         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 999
1000         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1001         uinfo->mem[2].size = udev->l2_ring_size;
1002         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1003
1004         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1005         uinfo->mem[3].size = udev->l2_buf_size;
1006         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1007
1008         uinfo->version = CNIC_MODULE_VERSION;
1009         uinfo->irq = UIO_IRQ_CUSTOM;
1010
1011         uinfo->open = cnic_uio_open;
1012         uinfo->release = cnic_uio_close;
1013
1014         if (udev->uio_dev == -1) {
1015                 if (!uinfo->priv) {
1016                         uinfo->priv = udev;
1017
1018                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1019                 }
1020         } else {
1021                 cnic_init_rings(dev);
1022         }
1023
1024         return ret;
1025 }
1026
1027 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1028 {
1029         struct cnic_local *cp = dev->cnic_priv;
1030         int ret;
1031
1032         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1033         if (ret)
1034                 goto error;
1035         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1036
1037         ret = cnic_alloc_kcq(dev, &cp->kcq1);
1038         if (ret)
1039                 goto error;
1040
1041         ret = cnic_alloc_context(dev);
1042         if (ret)
1043                 goto error;
1044
1045         ret = cnic_alloc_uio_rings(dev, 2);
1046         if (ret)
1047                 goto error;
1048
1049         ret = cnic_init_uio(dev);
1050         if (ret)
1051                 goto error;
1052
1053         return 0;
1054
1055 error:
1056         cnic_free_resc(dev);
1057         return ret;
1058 }
1059
1060 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1061 {
1062         struct cnic_local *cp = dev->cnic_priv;
1063         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1064         int total_mem, blks, i;
1065
1066         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1067         blks = total_mem / ctx_blk_size;
1068         if (total_mem % ctx_blk_size)
1069                 blks++;
1070
1071         if (blks > cp->ethdev->ctx_tbl_len)
1072                 return -ENOMEM;
1073
1074         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1075         if (cp->ctx_arr == NULL)
1076                 return -ENOMEM;
1077
1078         cp->ctx_blks = blks;
1079         cp->ctx_blk_size = ctx_blk_size;
1080         if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1081                 cp->ctx_align = 0;
1082         else
1083                 cp->ctx_align = ctx_blk_size;
1084
1085         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1086
1087         for (i = 0; i < blks; i++) {
1088                 cp->ctx_arr[i].ctx =
1089                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1090                                            &cp->ctx_arr[i].mapping,
1091                                            GFP_KERNEL);
1092                 if (cp->ctx_arr[i].ctx == NULL)
1093                         return -ENOMEM;
1094
1095                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1096                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1097                                 cnic_free_context(dev);
1098                                 cp->ctx_blk_size += cp->ctx_align;
1099                                 i = -1;
1100                                 continue;
1101                         }
1102                 }
1103         }
1104         return 0;
1105 }
1106
1107 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1108 {
1109         struct cnic_local *cp = dev->cnic_priv;
1110         struct cnic_eth_dev *ethdev = cp->ethdev;
1111         u32 start_cid = ethdev->starting_cid;
1112         int i, j, n, ret, pages;
1113         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1114
1115         cp->iro_arr = ethdev->iro_arr;
1116
1117         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1118         cp->iscsi_start_cid = start_cid;
1119         if (start_cid < BNX2X_ISCSI_START_CID) {
1120                 u32 delta = BNX2X_ISCSI_START_CID - start_cid;
1121
1122                 cp->iscsi_start_cid = BNX2X_ISCSI_START_CID;
1123                 cp->max_cid_space += delta;
1124         }
1125
1126         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1127                                 GFP_KERNEL);
1128         if (!cp->iscsi_tbl)
1129                 goto error;
1130
1131         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1132                                 cp->max_cid_space, GFP_KERNEL);
1133         if (!cp->ctx_tbl)
1134                 goto error;
1135
1136         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1137                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1138                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1139         }
1140
1141         pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1142                 PAGE_SIZE;
1143
1144         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1145         if (ret)
1146                 return -ENOMEM;
1147
1148         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1149         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1150                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1151
1152                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1153                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1154                                                    off;
1155
1156                 if ((i % n) == (n - 1))
1157                         j++;
1158         }
1159
1160         ret = cnic_alloc_kcq(dev, &cp->kcq1);
1161         if (ret)
1162                 goto error;
1163
1164         pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
1165                            BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
1166         ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
1167         if (ret)
1168                 goto error;
1169
1170         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1171         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1172         if (ret)
1173                 goto error;
1174
1175         ret = cnic_alloc_bnx2x_context(dev);
1176         if (ret)
1177                 goto error;
1178
1179         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1180
1181         cp->l2_rx_ring_size = 15;
1182
1183         ret = cnic_alloc_uio_rings(dev, 4);
1184         if (ret)
1185                 goto error;
1186
1187         ret = cnic_init_uio(dev);
1188         if (ret)
1189                 goto error;
1190
1191         return 0;
1192
1193 error:
1194         cnic_free_resc(dev);
1195         return -ENOMEM;
1196 }
1197
1198 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1199 {
1200         return cp->max_kwq_idx -
1201                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1202 }
1203
1204 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1205                                   u32 num_wqes)
1206 {
1207         struct cnic_local *cp = dev->cnic_priv;
1208         struct kwqe *prod_qe;
1209         u16 prod, sw_prod, i;
1210
1211         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1212                 return -EAGAIN;         /* bnx2 is down */
1213
1214         spin_lock_bh(&cp->cnic_ulp_lock);
1215         if (num_wqes > cnic_kwq_avail(cp) &&
1216             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1217                 spin_unlock_bh(&cp->cnic_ulp_lock);
1218                 return -EAGAIN;
1219         }
1220
1221         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1222
1223         prod = cp->kwq_prod_idx;
1224         sw_prod = prod & MAX_KWQ_IDX;
1225         for (i = 0; i < num_wqes; i++) {
1226                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1227                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1228                 prod++;
1229                 sw_prod = prod & MAX_KWQ_IDX;
1230         }
1231         cp->kwq_prod_idx = prod;
1232
1233         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1234
1235         spin_unlock_bh(&cp->cnic_ulp_lock);
1236         return 0;
1237 }
1238
1239 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1240                                    union l5cm_specific_data *l5_data)
1241 {
1242         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1243         dma_addr_t map;
1244
1245         map = ctx->kwqe_data_mapping;
1246         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1247         l5_data->phy_address.hi = (u64) map >> 32;
1248         return ctx->kwqe_data;
1249 }
1250
1251 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1252                                 u32 type, union l5cm_specific_data *l5_data)
1253 {
1254         struct cnic_local *cp = dev->cnic_priv;
1255         struct l5cm_spe kwqe;
1256         struct kwqe_16 *kwq[1];
1257         int ret;
1258
1259         kwqe.hdr.conn_and_cmd_data =
1260                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1261                              BNX2X_HW_CID(cp, cid)));
1262         kwqe.hdr.type = cpu_to_le16(type);
1263         kwqe.hdr.reserved1 = 0;
1264         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1265         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1266
1267         kwq[0] = (struct kwqe_16 *) &kwqe;
1268
1269         spin_lock_bh(&cp->cnic_ulp_lock);
1270         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1271         spin_unlock_bh(&cp->cnic_ulp_lock);
1272
1273         if (ret == 1)
1274                 return 0;
1275
1276         return -EBUSY;
1277 }
1278
1279 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1280                                    struct kcqe *cqes[], u32 num_cqes)
1281 {
1282         struct cnic_local *cp = dev->cnic_priv;
1283         struct cnic_ulp_ops *ulp_ops;
1284
1285         rcu_read_lock();
1286         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1287         if (likely(ulp_ops)) {
1288                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1289                                           cqes, num_cqes);
1290         }
1291         rcu_read_unlock();
1292 }
1293
1294 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1295 {
1296         struct cnic_local *cp = dev->cnic_priv;
1297         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1298         int hq_bds, pages;
1299         u32 pfid = cp->pfid;
1300
1301         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1302         cp->num_ccells = req1->num_ccells_per_conn;
1303         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1304                               cp->num_iscsi_tasks;
1305         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1306                         BNX2X_ISCSI_R2TQE_SIZE;
1307         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1308         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1309         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1310         cp->num_cqs = req1->num_cqs;
1311
1312         if (!dev->max_iscsi_conn)
1313                 return 0;
1314
1315         /* init Tstorm RAM */
1316         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1317                   req1->rq_num_wqes);
1318         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1319                   PAGE_SIZE);
1320         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1321                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1322         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1323                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1324                   req1->num_tasks_per_conn);
1325
1326         /* init Ustorm RAM */
1327         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1328                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1329                   req1->rq_buffer_size);
1330         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1331                   PAGE_SIZE);
1332         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1333                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1334         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1335                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1336                   req1->num_tasks_per_conn);
1337         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1338                   req1->rq_num_wqes);
1339         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1340                   req1->cq_num_wqes);
1341         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1342                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1343
1344         /* init Xstorm RAM */
1345         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1346                   PAGE_SIZE);
1347         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1348                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1349         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1350                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1351                   req1->num_tasks_per_conn);
1352         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1353                   hq_bds);
1354         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1355                   req1->num_tasks_per_conn);
1356         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1357                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1358
1359         /* init Cstorm RAM */
1360         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1361                   PAGE_SIZE);
1362         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1363                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1364         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1365                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1366                   req1->num_tasks_per_conn);
1367         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1368                   req1->cq_num_wqes);
1369         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1370                   hq_bds);
1371
1372         return 0;
1373 }
1374
1375 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1376 {
1377         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1378         struct cnic_local *cp = dev->cnic_priv;
1379         u32 pfid = cp->pfid;
1380         struct iscsi_kcqe kcqe;
1381         struct kcqe *cqes[1];
1382
1383         memset(&kcqe, 0, sizeof(kcqe));
1384         if (!dev->max_iscsi_conn) {
1385                 kcqe.completion_status =
1386                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1387                 goto done;
1388         }
1389
1390         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1391                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1392         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1393                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1394                 req2->error_bit_map[1]);
1395
1396         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1397                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1398         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1399                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1400         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1401                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1402                 req2->error_bit_map[1]);
1403
1404         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1405                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1406
1407         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1408
1409 done:
1410         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1411         cqes[0] = (struct kcqe *) &kcqe;
1412         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1413
1414         return 0;
1415 }
1416
1417 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1418 {
1419         struct cnic_local *cp = dev->cnic_priv;
1420         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1421
1422         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1423                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1424
1425                 cnic_free_dma(dev, &iscsi->hq_info);
1426                 cnic_free_dma(dev, &iscsi->r2tq_info);
1427                 cnic_free_dma(dev, &iscsi->task_array_info);
1428         }
1429         cnic_free_id(&cp->cid_tbl, ctx->cid);
1430         ctx->cid = 0;
1431 }
1432
1433 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1434 {
1435         u32 cid;
1436         int ret, pages;
1437         struct cnic_local *cp = dev->cnic_priv;
1438         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1439         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1440
1441         cid = cnic_alloc_new_id(&cp->cid_tbl);
1442         if (cid == -1) {
1443                 ret = -ENOMEM;
1444                 goto error;
1445         }
1446
1447         ctx->cid = cid;
1448         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1449
1450         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1451         if (ret)
1452                 goto error;
1453
1454         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1455         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1456         if (ret)
1457                 goto error;
1458
1459         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1460         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1461         if (ret)
1462                 goto error;
1463
1464         return 0;
1465
1466 error:
1467         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1468         return ret;
1469 }
1470
1471 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1472                                 struct regpair *ctx_addr)
1473 {
1474         struct cnic_local *cp = dev->cnic_priv;
1475         struct cnic_eth_dev *ethdev = cp->ethdev;
1476         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1477         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1478         unsigned long align_off = 0;
1479         dma_addr_t ctx_map;
1480         void *ctx;
1481
1482         if (cp->ctx_align) {
1483                 unsigned long mask = cp->ctx_align - 1;
1484
1485                 if (cp->ctx_arr[blk].mapping & mask)
1486                         align_off = cp->ctx_align -
1487                                     (cp->ctx_arr[blk].mapping & mask);
1488         }
1489         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1490                 (off * BNX2X_CONTEXT_MEM_SIZE);
1491         ctx = cp->ctx_arr[blk].ctx + align_off +
1492               (off * BNX2X_CONTEXT_MEM_SIZE);
1493         if (init)
1494                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1495
1496         ctx_addr->lo = ctx_map & 0xffffffff;
1497         ctx_addr->hi = (u64) ctx_map >> 32;
1498         return ctx;
1499 }
1500
1501 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1502                                 u32 num)
1503 {
1504         struct cnic_local *cp = dev->cnic_priv;
1505         struct iscsi_kwqe_conn_offload1 *req1 =
1506                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1507         struct iscsi_kwqe_conn_offload2 *req2 =
1508                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1509         struct iscsi_kwqe_conn_offload3 *req3;
1510         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1511         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1512         u32 cid = ctx->cid;
1513         u32 hw_cid = BNX2X_HW_CID(cp, cid);
1514         struct iscsi_context *ictx;
1515         struct regpair context_addr;
1516         int i, j, n = 2, n_max;
1517
1518         ctx->ctx_flags = 0;
1519         if (!req2->num_additional_wqes)
1520                 return -EINVAL;
1521
1522         n_max = req2->num_additional_wqes + 2;
1523
1524         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1525         if (ictx == NULL)
1526                 return -ENOMEM;
1527
1528         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1529
1530         ictx->xstorm_ag_context.hq_prod = 1;
1531
1532         ictx->xstorm_st_context.iscsi.first_burst_length =
1533                 ISCSI_DEF_FIRST_BURST_LEN;
1534         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1535                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1536         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1537                 req1->sq_page_table_addr_lo;
1538         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1539                 req1->sq_page_table_addr_hi;
1540         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1541         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1542         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1543                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1544         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1545                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1546         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1547                 iscsi->hq_info.pgtbl[0];
1548         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1549                 iscsi->hq_info.pgtbl[1];
1550         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1551                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1552         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1553                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1554         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1555                 iscsi->r2tq_info.pgtbl[0];
1556         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1557                 iscsi->r2tq_info.pgtbl[1];
1558         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1559                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1560         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1561                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1562         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1563                 BNX2X_ISCSI_PBL_NOT_CACHED;
1564         ictx->xstorm_st_context.iscsi.flags.flags |=
1565                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1566         ictx->xstorm_st_context.iscsi.flags.flags |=
1567                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1568
1569         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1570         /* TSTORM requires the base address of RQ DB & not PTE */
1571         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1572                 req2->rq_page_table_addr_lo & PAGE_MASK;
1573         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1574                 req2->rq_page_table_addr_hi;
1575         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1576         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1577         ictx->tstorm_st_context.tcp.flags2 |=
1578                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1579         ictx->tstorm_st_context.tcp.ooo_support_mode =
1580                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1581
1582         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1583
1584         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1585                 req2->rq_page_table_addr_lo;
1586         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1587                 req2->rq_page_table_addr_hi;
1588         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1589         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1590         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1591                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1592         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1593                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1594         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1595                 iscsi->r2tq_info.pgtbl[0];
1596         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1597                 iscsi->r2tq_info.pgtbl[1];
1598         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1599                 req1->cq_page_table_addr_lo;
1600         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1601                 req1->cq_page_table_addr_hi;
1602         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1603         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1604         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1605         ictx->ustorm_st_context.task_pbe_cache_index =
1606                 BNX2X_ISCSI_PBL_NOT_CACHED;
1607         ictx->ustorm_st_context.task_pdu_cache_index =
1608                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1609
1610         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1611                 if (j == 3) {
1612                         if (n >= n_max)
1613                                 break;
1614                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1615                         j = 0;
1616                 }
1617                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1618                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1619                         req3->qp_first_pte[j].hi;
1620                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1621                         req3->qp_first_pte[j].lo;
1622         }
1623
1624         ictx->ustorm_st_context.task_pbl_base.lo =
1625                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1626         ictx->ustorm_st_context.task_pbl_base.hi =
1627                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1628         ictx->ustorm_st_context.tce_phy_addr.lo =
1629                 iscsi->task_array_info.pgtbl[0];
1630         ictx->ustorm_st_context.tce_phy_addr.hi =
1631                 iscsi->task_array_info.pgtbl[1];
1632         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1633         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1634         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1635         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1636                 ISCSI_DEF_MAX_BURST_LEN;
1637         ictx->ustorm_st_context.negotiated_rx |=
1638                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1639                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1640
1641         ictx->cstorm_st_context.hq_pbl_base.lo =
1642                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1643         ictx->cstorm_st_context.hq_pbl_base.hi =
1644                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1645         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1646         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1647         ictx->cstorm_st_context.task_pbl_base.lo =
1648                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1649         ictx->cstorm_st_context.task_pbl_base.hi =
1650                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1651         /* CSTORM and USTORM initialization is different, CSTORM requires
1652          * CQ DB base & not PTE addr */
1653         ictx->cstorm_st_context.cq_db_base.lo =
1654                 req1->cq_page_table_addr_lo & PAGE_MASK;
1655         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1656         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1657         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1658         for (i = 0; i < cp->num_cqs; i++) {
1659                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1660                         ISCSI_INITIAL_SN;
1661                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1662                         ISCSI_INITIAL_SN;
1663         }
1664
1665         ictx->xstorm_ag_context.cdu_reserved =
1666                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1667                                        ISCSI_CONNECTION_TYPE);
1668         ictx->ustorm_ag_context.cdu_usage =
1669                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1670                                        ISCSI_CONNECTION_TYPE);
1671         return 0;
1672
1673 }
1674
1675 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1676                                    u32 num, int *work)
1677 {
1678         struct iscsi_kwqe_conn_offload1 *req1;
1679         struct iscsi_kwqe_conn_offload2 *req2;
1680         struct cnic_local *cp = dev->cnic_priv;
1681         struct cnic_context *ctx;
1682         struct iscsi_kcqe kcqe;
1683         struct kcqe *cqes[1];
1684         u32 l5_cid;
1685         int ret = 0;
1686
1687         if (num < 2) {
1688                 *work = num;
1689                 return -EINVAL;
1690         }
1691
1692         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1693         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1694         if ((num - 2) < req2->num_additional_wqes) {
1695                 *work = num;
1696                 return -EINVAL;
1697         }
1698         *work = 2 + req2->num_additional_wqes;
1699
1700         l5_cid = req1->iscsi_conn_id;
1701         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1702                 return -EINVAL;
1703
1704         memset(&kcqe, 0, sizeof(kcqe));
1705         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1706         kcqe.iscsi_conn_id = l5_cid;
1707         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1708
1709         ctx = &cp->ctx_tbl[l5_cid];
1710         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1711                 kcqe.completion_status =
1712                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1713                 goto done;
1714         }
1715
1716         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1717                 atomic_dec(&cp->iscsi_conn);
1718                 goto done;
1719         }
1720         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1721         if (ret) {
1722                 atomic_dec(&cp->iscsi_conn);
1723                 ret = 0;
1724                 goto done;
1725         }
1726         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1727         if (ret < 0) {
1728                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1729                 atomic_dec(&cp->iscsi_conn);
1730                 goto done;
1731         }
1732
1733         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1734         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1735
1736 done:
1737         cqes[0] = (struct kcqe *) &kcqe;
1738         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1739         return ret;
1740 }
1741
1742
1743 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1744 {
1745         struct cnic_local *cp = dev->cnic_priv;
1746         struct iscsi_kwqe_conn_update *req =
1747                 (struct iscsi_kwqe_conn_update *) kwqe;
1748         void *data;
1749         union l5cm_specific_data l5_data;
1750         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1751         int ret;
1752
1753         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1754                 return -EINVAL;
1755
1756         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1757         if (!data)
1758                 return -ENOMEM;
1759
1760         memcpy(data, kwqe, sizeof(struct kwqe));
1761
1762         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1763                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1764         return ret;
1765 }
1766
1767 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1768 {
1769         struct cnic_local *cp = dev->cnic_priv;
1770         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1771         union l5cm_specific_data l5_data;
1772         int ret;
1773         u32 hw_cid, type;
1774
1775         init_waitqueue_head(&ctx->waitq);
1776         ctx->wait_cond = 0;
1777         memset(&l5_data, 0, sizeof(l5_data));
1778         hw_cid = BNX2X_HW_CID(cp, ctx->cid);
1779         type = (NONE_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
1780                 & SPE_HDR_CONN_TYPE;
1781         type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1782                  SPE_HDR_FUNCTION_ID);
1783
1784         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1785                                   hw_cid, type, &l5_data);
1786
1787         if (ret == 0)
1788                 wait_event(ctx->waitq, ctx->wait_cond);
1789
1790         return ret;
1791 }
1792
1793 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1794 {
1795         struct cnic_local *cp = dev->cnic_priv;
1796         struct iscsi_kwqe_conn_destroy *req =
1797                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1798         u32 l5_cid = req->reserved0;
1799         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1800         int ret = 0;
1801         struct iscsi_kcqe kcqe;
1802         struct kcqe *cqes[1];
1803
1804         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1805                 goto skip_cfc_delete;
1806
1807         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
1808                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
1809
1810                 if (delta > (2 * HZ))
1811                         delta = 0;
1812
1813                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
1814                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
1815                 goto destroy_reply;
1816         }
1817
1818         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
1819
1820 skip_cfc_delete:
1821         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1822
1823         atomic_dec(&cp->iscsi_conn);
1824         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1825
1826 destroy_reply:
1827         memset(&kcqe, 0, sizeof(kcqe));
1828         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1829         kcqe.iscsi_conn_id = l5_cid;
1830         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1831         kcqe.iscsi_conn_context_id = req->context_id;
1832
1833         cqes[0] = (struct kcqe *) &kcqe;
1834         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1835
1836         return ret;
1837 }
1838
1839 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1840                                       struct l4_kwq_connect_req1 *kwqe1,
1841                                       struct l4_kwq_connect_req3 *kwqe3,
1842                                       struct l5cm_active_conn_buffer *conn_buf)
1843 {
1844         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1845         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1846                 &conn_buf->xstorm_conn_buffer;
1847         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1848                 &conn_buf->tstorm_conn_buffer;
1849         struct regpair context_addr;
1850         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1851         struct in6_addr src_ip, dst_ip;
1852         int i;
1853         u32 *addrp;
1854
1855         addrp = (u32 *) &conn_addr->local_ip_addr;
1856         for (i = 0; i < 4; i++, addrp++)
1857                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1858
1859         addrp = (u32 *) &conn_addr->remote_ip_addr;
1860         for (i = 0; i < 4; i++, addrp++)
1861                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1862
1863         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1864
1865         xstorm_buf->context_addr.hi = context_addr.hi;
1866         xstorm_buf->context_addr.lo = context_addr.lo;
1867         xstorm_buf->mss = 0xffff;
1868         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1869         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1870                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1871         xstorm_buf->pseudo_header_checksum =
1872                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1873
1874         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1875                 tstorm_buf->params |=
1876                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1877         if (kwqe3->ka_timeout) {
1878                 tstorm_buf->ka_enable = 1;
1879                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1880                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1881                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1882         }
1883         tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1884         tstorm_buf->snd_buf = kwqe3->snd_buf;
1885         tstorm_buf->max_rt_time = 0xffffffff;
1886 }
1887
1888 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1889 {
1890         struct cnic_local *cp = dev->cnic_priv;
1891         u32 pfid = cp->pfid;
1892         u8 *mac = dev->mac_addr;
1893
1894         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1895                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
1896         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1897                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
1898         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1899                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
1900         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1901                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
1902         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1903                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
1904         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1905                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
1906
1907         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1908                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
1909         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1910                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1911                  mac[4]);
1912         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1913                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
1914         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1915                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1916                  mac[2]);
1917         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1918                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 2,
1919                  mac[1]);
1920         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1921                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 3,
1922                  mac[0]);
1923 }
1924
1925 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1926 {
1927         struct cnic_local *cp = dev->cnic_priv;
1928         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1929         u16 tstorm_flags = 0;
1930
1931         if (tcp_ts) {
1932                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1933                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1934         }
1935
1936         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1937                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
1938
1939         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1940                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
1941 }
1942
1943 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
1944                               u32 num, int *work)
1945 {
1946         struct cnic_local *cp = dev->cnic_priv;
1947         struct l4_kwq_connect_req1 *kwqe1 =
1948                 (struct l4_kwq_connect_req1 *) wqes[0];
1949         struct l4_kwq_connect_req3 *kwqe3;
1950         struct l5cm_active_conn_buffer *conn_buf;
1951         struct l5cm_conn_addr_params *conn_addr;
1952         union l5cm_specific_data l5_data;
1953         u32 l5_cid = kwqe1->pg_cid;
1954         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
1955         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1956         int ret;
1957
1958         if (num < 2) {
1959                 *work = num;
1960                 return -EINVAL;
1961         }
1962
1963         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
1964                 *work = 3;
1965         else
1966                 *work = 2;
1967
1968         if (num < *work) {
1969                 *work = num;
1970                 return -EINVAL;
1971         }
1972
1973         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
1974                 netdev_err(dev->netdev, "conn_buf size too big\n");
1975                 return -ENOMEM;
1976         }
1977         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1978         if (!conn_buf)
1979                 return -ENOMEM;
1980
1981         memset(conn_buf, 0, sizeof(*conn_buf));
1982
1983         conn_addr = &conn_buf->conn_addr_buf;
1984         conn_addr->remote_addr_0 = csk->ha[0];
1985         conn_addr->remote_addr_1 = csk->ha[1];
1986         conn_addr->remote_addr_2 = csk->ha[2];
1987         conn_addr->remote_addr_3 = csk->ha[3];
1988         conn_addr->remote_addr_4 = csk->ha[4];
1989         conn_addr->remote_addr_5 = csk->ha[5];
1990
1991         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
1992                 struct l4_kwq_connect_req2 *kwqe2 =
1993                         (struct l4_kwq_connect_req2 *) wqes[1];
1994
1995                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
1996                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
1997                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
1998
1999                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2000                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2001                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2002                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2003         }
2004         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2005
2006         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2007         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2008         conn_addr->local_tcp_port = kwqe1->src_port;
2009         conn_addr->remote_tcp_port = kwqe1->dst_port;
2010
2011         conn_addr->pmtu = kwqe3->pmtu;
2012         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2013
2014         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2015                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2016
2017         cnic_bnx2x_set_tcp_timestamp(dev,
2018                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
2019
2020         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2021                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2022         if (!ret)
2023                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2024
2025         return ret;
2026 }
2027
2028 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2029 {
2030         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2031         union l5cm_specific_data l5_data;
2032         int ret;
2033
2034         memset(&l5_data, 0, sizeof(l5_data));
2035         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2036                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2037         return ret;
2038 }
2039
2040 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2041 {
2042         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2043         union l5cm_specific_data l5_data;
2044         int ret;
2045
2046         memset(&l5_data, 0, sizeof(l5_data));
2047         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2048                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2049         return ret;
2050 }
2051 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2052 {
2053         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2054         struct l4_kcq kcqe;
2055         struct kcqe *cqes[1];
2056
2057         memset(&kcqe, 0, sizeof(kcqe));
2058         kcqe.pg_host_opaque = req->host_opaque;
2059         kcqe.pg_cid = req->host_opaque;
2060         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2061         cqes[0] = (struct kcqe *) &kcqe;
2062         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2063         return 0;
2064 }
2065
2066 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2067 {
2068         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2069         struct l4_kcq kcqe;
2070         struct kcqe *cqes[1];
2071
2072         memset(&kcqe, 0, sizeof(kcqe));
2073         kcqe.pg_host_opaque = req->pg_host_opaque;
2074         kcqe.pg_cid = req->pg_cid;
2075         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2076         cqes[0] = (struct kcqe *) &kcqe;
2077         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2078         return 0;
2079 }
2080
2081 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2082                                    u32 num_wqes)
2083 {
2084         int i, work, ret;
2085         u32 opcode;
2086         struct kwqe *kwqe;
2087
2088         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2089                 return -EAGAIN;         /* bnx2 is down */
2090
2091         for (i = 0; i < num_wqes; ) {
2092                 kwqe = wqes[i];
2093                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2094                 work = 1;
2095
2096                 switch (opcode) {
2097                 case ISCSI_KWQE_OPCODE_INIT1:
2098                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2099                         break;
2100                 case ISCSI_KWQE_OPCODE_INIT2:
2101                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2102                         break;
2103                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2104                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2105                                                      num_wqes - i, &work);
2106                         break;
2107                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2108                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2109                         break;
2110                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2111                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2112                         break;
2113                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2114                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2115                                                  &work);
2116                         break;
2117                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2118                         ret = cnic_bnx2x_close(dev, kwqe);
2119                         break;
2120                 case L4_KWQE_OPCODE_VALUE_RESET:
2121                         ret = cnic_bnx2x_reset(dev, kwqe);
2122                         break;
2123                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2124                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2125                         break;
2126                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2127                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2128                         break;
2129                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2130                         ret = 0;
2131                         break;
2132                 default:
2133                         ret = 0;
2134                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2135                                    opcode);
2136                         break;
2137                 }
2138                 if (ret < 0)
2139                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2140                                    opcode);
2141                 i += work;
2142         }
2143         return 0;
2144 }
2145
2146 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2147 {
2148         struct cnic_local *cp = dev->cnic_priv;
2149         int i, j, comp = 0;
2150
2151         i = 0;
2152         j = 1;
2153         while (num_cqes) {
2154                 struct cnic_ulp_ops *ulp_ops;
2155                 int ulp_type;
2156                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2157                 u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;
2158
2159                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2160                         comp++;
2161
2162                 while (j < num_cqes) {
2163                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2164
2165                         if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
2166                                 break;
2167
2168                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2169                                 comp++;
2170                         j++;
2171                 }
2172
2173                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2174                         ulp_type = CNIC_ULP_RDMA;
2175                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2176                         ulp_type = CNIC_ULP_ISCSI;
2177                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2178                         ulp_type = CNIC_ULP_L4;
2179                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2180                         goto end;
2181                 else {
2182                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2183                                    kcqe_op_flag);
2184                         goto end;
2185                 }
2186
2187                 rcu_read_lock();
2188                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2189                 if (likely(ulp_ops)) {
2190                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2191                                                   cp->completed_kcq + i, j);
2192                 }
2193                 rcu_read_unlock();
2194 end:
2195                 num_cqes -= j;
2196                 i += j;
2197                 j = 1;
2198         }
2199         if (unlikely(comp))
2200                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2201 }
2202
2203 static u16 cnic_bnx2_next_idx(u16 idx)
2204 {
2205         return idx + 1;
2206 }
2207
2208 static u16 cnic_bnx2_hw_idx(u16 idx)
2209 {
2210         return idx;
2211 }
2212
2213 static u16 cnic_bnx2x_next_idx(u16 idx)
2214 {
2215         idx++;
2216         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2217                 idx++;
2218
2219         return idx;
2220 }
2221
2222 static u16 cnic_bnx2x_hw_idx(u16 idx)
2223 {
2224         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2225                 idx++;
2226         return idx;
2227 }
2228
2229 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2230 {
2231         struct cnic_local *cp = dev->cnic_priv;
2232         u16 i, ri, hw_prod, last;
2233         struct kcqe *kcqe;
2234         int kcqe_cnt = 0, last_cnt = 0;
2235
2236         i = ri = last = info->sw_prod_idx;
2237         ri &= MAX_KCQ_IDX;
2238         hw_prod = *info->hw_prod_idx_ptr;
2239         hw_prod = cp->hw_idx(hw_prod);
2240
2241         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2242                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2243                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2244                 i = cp->next_idx(i);
2245                 ri = i & MAX_KCQ_IDX;
2246                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2247                         last_cnt = kcqe_cnt;
2248                         last = i;
2249                 }
2250         }
2251
2252         info->sw_prod_idx = last;
2253         return last_cnt;
2254 }
2255
2256 static int cnic_l2_completion(struct cnic_local *cp)
2257 {
2258         u16 hw_cons, sw_cons;
2259         struct cnic_uio_dev *udev = cp->udev;
2260         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2261                                         (udev->l2_ring + (2 * BCM_PAGE_SIZE));
2262         u32 cmd;
2263         int comp = 0;
2264
2265         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2266                 return 0;
2267
2268         hw_cons = *cp->rx_cons_ptr;
2269         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2270                 hw_cons++;
2271
2272         sw_cons = cp->rx_cons;
2273         while (sw_cons != hw_cons) {
2274                 u8 cqe_fp_flags;
2275
2276                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2277                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2278                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2279                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2280                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2281                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2282                             cmd == RAMROD_CMD_ID_ETH_HALT)
2283                                 comp++;
2284                 }
2285                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2286         }
2287         return comp;
2288 }
2289
2290 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2291 {
2292         u16 rx_cons, tx_cons;
2293         int comp = 0;
2294
2295         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2296                 return;
2297
2298         rx_cons = *cp->rx_cons_ptr;
2299         tx_cons = *cp->tx_cons_ptr;
2300         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2301                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2302                         comp = cnic_l2_completion(cp);
2303
2304                 cp->tx_cons = tx_cons;
2305                 cp->rx_cons = rx_cons;
2306
2307                 if (cp->udev)
2308                         uio_event_notify(&cp->udev->cnic_uinfo);
2309         }
2310         if (comp)
2311                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2312 }
2313
2314 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2315 {
2316         struct cnic_local *cp = dev->cnic_priv;
2317         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2318         int kcqe_cnt;
2319
2320         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2321
2322         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2323
2324                 service_kcqes(dev, kcqe_cnt);
2325
2326                 /* Tell compiler that status_blk fields can change. */
2327                 barrier();
2328                 if (status_idx != *cp->kcq1.status_idx_ptr) {
2329                         status_idx = (u16) *cp->kcq1.status_idx_ptr;
2330                         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2331                 } else
2332                         break;
2333         }
2334
2335         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2336
2337         cnic_chk_pkt_rings(cp);
2338
2339         return status_idx;
2340 }
2341
2342 static int cnic_service_bnx2(void *data, void *status_blk)
2343 {
2344         struct cnic_dev *dev = data;
2345         struct cnic_local *cp = dev->cnic_priv;
2346         u32 status_idx = *cp->kcq1.status_idx_ptr;
2347
2348         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2349                 return status_idx;
2350
2351         return cnic_service_bnx2_queues(dev);
2352 }
2353
2354 static void cnic_service_bnx2_msix(unsigned long data)
2355 {
2356         struct cnic_dev *dev = (struct cnic_dev *) data;
2357         struct cnic_local *cp = dev->cnic_priv;
2358
2359         cp->last_status_idx = cnic_service_bnx2_queues(dev);
2360
2361         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2362                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2363 }
2364
2365 static void cnic_doirq(struct cnic_dev *dev)
2366 {
2367         struct cnic_local *cp = dev->cnic_priv;
2368         u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
2369
2370         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2371                 prefetch(cp->status_blk.gen);
2372                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2373
2374                 tasklet_schedule(&cp->cnic_irq_task);
2375         }
2376 }
2377
2378 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2379 {
2380         struct cnic_dev *dev = dev_instance;
2381         struct cnic_local *cp = dev->cnic_priv;
2382
2383         if (cp->ack_int)
2384                 cp->ack_int(dev);
2385
2386         cnic_doirq(dev);
2387
2388         return IRQ_HANDLED;
2389 }
2390
2391 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2392                                       u16 index, u8 op, u8 update)
2393 {
2394         struct cnic_local *cp = dev->cnic_priv;
2395         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2396                        COMMAND_REG_INT_ACK);
2397         struct igu_ack_register igu_ack;
2398
2399         igu_ack.status_block_index = index;
2400         igu_ack.sb_id_and_flags =
2401                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2402                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2403                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2404                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2405
2406         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2407 }
2408
2409 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
2410                             u16 index, u8 op, u8 update)
2411 {
2412         struct igu_regular cmd_data;
2413         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
2414
2415         cmd_data.sb_id_and_flags =
2416                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
2417                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
2418                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
2419                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
2420
2421
2422         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
2423 }
2424
2425 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2426 {
2427         struct cnic_local *cp = dev->cnic_priv;
2428
2429         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
2430                            IGU_INT_DISABLE, 0);
2431 }
2432
2433 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
2434 {
2435         struct cnic_local *cp = dev->cnic_priv;
2436
2437         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
2438                         IGU_INT_DISABLE, 0);
2439 }
2440
2441 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
2442 {
2443         u32 last_status = *info->status_idx_ptr;
2444         int kcqe_cnt;
2445
2446         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
2447
2448                 service_kcqes(dev, kcqe_cnt);
2449
2450                 /* Tell compiler that sblk fields can change. */
2451                 barrier();
2452                 if (last_status == *info->status_idx_ptr)
2453                         break;
2454
2455                 last_status = *info->status_idx_ptr;
2456         }
2457         return last_status;
2458 }
2459
2460 static void cnic_service_bnx2x_bh(unsigned long data)
2461 {
2462         struct cnic_dev *dev = (struct cnic_dev *) data;
2463         struct cnic_local *cp = dev->cnic_priv;
2464         u32 status_idx;
2465
2466         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2467                 return;
2468
2469         status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
2470
2471         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
2472         if (BNX2X_CHIP_IS_E2(cp->chip_id))
2473                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
2474                                 status_idx, IGU_INT_ENABLE, 1);
2475         else
2476                 cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
2477                                    status_idx, IGU_INT_ENABLE, 1);
2478 }
2479
2480 static int cnic_service_bnx2x(void *data, void *status_blk)
2481 {
2482         struct cnic_dev *dev = data;
2483         struct cnic_local *cp = dev->cnic_priv;
2484
2485         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
2486                 cnic_doirq(dev);
2487
2488         cnic_chk_pkt_rings(cp);
2489
2490         return 0;
2491 }
2492
2493 static void cnic_ulp_stop(struct cnic_dev *dev)
2494 {
2495         struct cnic_local *cp = dev->cnic_priv;
2496         int if_type;
2497
2498         cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2499
2500         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2501                 struct cnic_ulp_ops *ulp_ops;
2502
2503                 mutex_lock(&cnic_lock);
2504                 ulp_ops = cp->ulp_ops[if_type];
2505                 if (!ulp_ops) {
2506                         mutex_unlock(&cnic_lock);
2507                         continue;
2508                 }
2509                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2510                 mutex_unlock(&cnic_lock);
2511
2512                 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2513                         ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2514
2515                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2516         }
2517 }
2518
2519 static void cnic_ulp_start(struct cnic_dev *dev)
2520 {
2521         struct cnic_local *cp = dev->cnic_priv;
2522         int if_type;
2523
2524         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2525                 struct cnic_ulp_ops *ulp_ops;
2526
2527                 mutex_lock(&cnic_lock);
2528                 ulp_ops = cp->ulp_ops[if_type];
2529                 if (!ulp_ops || !ulp_ops->cnic_start) {
2530                         mutex_unlock(&cnic_lock);
2531                         continue;
2532                 }
2533                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2534                 mutex_unlock(&cnic_lock);
2535
2536                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2537                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2538
2539                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2540         }
2541 }
2542
2543 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
2544 {
2545         struct cnic_dev *dev = data;
2546
2547         switch (info->cmd) {
2548         case CNIC_CTL_STOP_CMD:
2549                 cnic_hold(dev);
2550
2551                 cnic_ulp_stop(dev);
2552                 cnic_stop_hw(dev);
2553
2554                 cnic_put(dev);
2555                 break;
2556         case CNIC_CTL_START_CMD:
2557                 cnic_hold(dev);
2558
2559                 if (!cnic_start_hw(dev))
2560                         cnic_ulp_start(dev);
2561
2562                 cnic_put(dev);
2563                 break;
2564         case CNIC_CTL_COMPLETION_CMD: {
2565                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
2566                 u32 l5_cid;
2567                 struct cnic_local *cp = dev->cnic_priv;
2568
2569                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
2570                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2571
2572                         ctx->wait_cond = 1;
2573                         wake_up(&ctx->waitq);
2574                 }
2575                 break;
2576         }
2577         default:
2578                 return -EINVAL;
2579         }
2580         return 0;
2581 }
2582
2583 static void cnic_ulp_init(struct cnic_dev *dev)
2584 {
2585         int i;
2586         struct cnic_local *cp = dev->cnic_priv;
2587
2588         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2589                 struct cnic_ulp_ops *ulp_ops;
2590
2591                 mutex_lock(&cnic_lock);
2592                 ulp_ops = cnic_ulp_tbl[i];
2593                 if (!ulp_ops || !ulp_ops->cnic_init) {
2594                         mutex_unlock(&cnic_lock);
2595                         continue;
2596                 }
2597                 ulp_get(ulp_ops);
2598                 mutex_unlock(&cnic_lock);
2599
2600                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2601                         ulp_ops->cnic_init(dev);
2602
2603                 ulp_put(ulp_ops);
2604         }
2605 }
2606
2607 static void cnic_ulp_exit(struct cnic_dev *dev)
2608 {
2609         int i;
2610         struct cnic_local *cp = dev->cnic_priv;
2611
2612         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2613                 struct cnic_ulp_ops *ulp_ops;
2614
2615                 mutex_lock(&cnic_lock);
2616                 ulp_ops = cnic_ulp_tbl[i];
2617                 if (!ulp_ops || !ulp_ops->cnic_exit) {
2618                         mutex_unlock(&cnic_lock);
2619                         continue;
2620                 }
2621                 ulp_get(ulp_ops);
2622                 mutex_unlock(&cnic_lock);
2623
2624                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2625                         ulp_ops->cnic_exit(dev);
2626
2627                 ulp_put(ulp_ops);
2628         }
2629 }
2630
2631 static int cnic_cm_offload_pg(struct cnic_sock *csk)
2632 {
2633         struct cnic_dev *dev = csk->dev;
2634         struct l4_kwq_offload_pg *l4kwqe;
2635         struct kwqe *wqes[1];
2636
2637         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
2638         memset(l4kwqe, 0, sizeof(*l4kwqe));
2639         wqes[0] = (struct kwqe *) l4kwqe;
2640
2641         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
2642         l4kwqe->flags =
2643                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
2644         l4kwqe->l2hdr_nbytes = ETH_HLEN;
2645
2646         l4kwqe->da0 = csk->ha[0];
2647         l4kwqe->da1 = csk->ha[1];
2648         l4kwqe->da2 = csk->ha[2];
2649         l4kwqe->da3 = csk->ha[3];
2650         l4kwqe->da4 = csk->ha[4];
2651         l4kwqe->da5 = csk->ha[5];
2652
2653         l4kwqe->sa0 = dev->mac_addr[0];
2654         l4kwqe->sa1 = dev->mac_addr[1];
2655         l4kwqe->sa2 = dev->mac_addr[2];
2656         l4kwqe->sa3 = dev->mac_addr[3];
2657         l4kwqe->sa4 = dev->mac_addr[4];
2658         l4kwqe->sa5 = dev->mac_addr[5];
2659
2660         l4kwqe->etype = ETH_P_IP;
2661         l4kwqe->ipid_start = DEF_IPID_START;
2662         l4kwqe->host_opaque = csk->l5_cid;
2663
2664         if (csk->vlan_id) {
2665                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
2666                 l4kwqe->vlan_tag = csk->vlan_id;
2667                 l4kwqe->l2hdr_nbytes += 4;
2668         }
2669
2670         return dev->submit_kwqes(dev, wqes, 1);
2671 }
2672
2673 static int cnic_cm_update_pg(struct cnic_sock *csk)
2674 {
2675         struct cnic_dev *dev = csk->dev;
2676         struct l4_kwq_update_pg *l4kwqe;
2677         struct kwqe *wqes[1];
2678
2679         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
2680         memset(l4kwqe, 0, sizeof(*l4kwqe));
2681         wqes[0] = (struct kwqe *) l4kwqe;
2682
2683         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
2684         l4kwqe->flags =
2685                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
2686         l4kwqe->pg_cid = csk->pg_cid;
2687
2688         l4kwqe->da0 = csk->ha[0];
2689         l4kwqe->da1 = csk->ha[1];
2690         l4kwqe->da2 = csk->ha[2];
2691         l4kwqe->da3 = csk->ha[3];
2692         l4kwqe->da4 = csk->ha[4];
2693         l4kwqe->da5 = csk->ha[5];
2694
2695         l4kwqe->pg_host_opaque = csk->l5_cid;
2696         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
2697
2698         return dev->submit_kwqes(dev, wqes, 1);
2699 }
2700
2701 static int cnic_cm_upload_pg(struct cnic_sock *csk)
2702 {
2703         struct cnic_dev *dev = csk->dev;
2704         struct l4_kwq_upload *l4kwqe;
2705         struct kwqe *wqes[1];
2706
2707         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
2708         memset(l4kwqe, 0, sizeof(*l4kwqe));
2709         wqes[0] = (struct kwqe *) l4kwqe;
2710
2711         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
2712         l4kwqe->flags =
2713                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
2714         l4kwqe->cid = csk->pg_cid;
2715
2716         return dev->submit_kwqes(dev, wqes, 1);
2717 }
2718
2719 static int cnic_cm_conn_req(struct cnic_sock *csk)
2720 {
2721         struct cnic_dev *dev = csk->dev;
2722         struct l4_kwq_connect_req1 *l4kwqe1;
2723         struct l4_kwq_connect_req2 *l4kwqe2;
2724         struct l4_kwq_connect_req3 *l4kwqe3;
2725         struct kwqe *wqes[3];
2726         u8 tcp_flags = 0;
2727         int num_wqes = 2;
2728
2729         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
2730         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
2731         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
2732         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
2733         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
2734         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
2735
2736         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
2737         l4kwqe3->flags =
2738                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
2739         l4kwqe3->ka_timeout = csk->ka_timeout;
2740         l4kwqe3->ka_interval = csk->ka_interval;
2741         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
2742         l4kwqe3->tos = csk->tos;
2743         l4kwqe3->ttl = csk->ttl;
2744         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
2745         l4kwqe3->pmtu = csk->mtu;
2746         l4kwqe3->rcv_buf = csk->rcv_buf;
2747         l4kwqe3->snd_buf = csk->snd_buf;
2748         l4kwqe3->seed = csk->seed;
2749
2750         wqes[0] = (struct kwqe *) l4kwqe1;
2751         if (test_bit(SK_F_IPV6, &csk->flags)) {
2752                 wqes[1] = (struct kwqe *) l4kwqe2;
2753                 wqes[2] = (struct kwqe *) l4kwqe3;
2754                 num_wqes = 3;
2755
2756                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
2757                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
2758                 l4kwqe2->flags =
2759                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
2760                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
2761                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
2762                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
2763                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
2764                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
2765                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
2766                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
2767                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
2768                                sizeof(struct tcphdr);
2769         } else {
2770                 wqes[1] = (struct kwqe *) l4kwqe3;
2771                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
2772                                sizeof(struct tcphdr);
2773         }
2774
2775         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
2776         l4kwqe1->flags =
2777                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
2778                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
2779         l4kwqe1->cid = csk->cid;
2780         l4kwqe1->pg_cid = csk->pg_cid;
2781         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
2782         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
2783         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
2784         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
2785         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
2786                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
2787         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
2788                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
2789         if (csk->tcp_flags & SK_TCP_NAGLE)
2790                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
2791         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
2792                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
2793         if (csk->tcp_flags & SK_TCP_SACK)
2794                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
2795         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
2796                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
2797
2798         l4kwqe1->tcp_flags = tcp_flags;
2799
2800         return dev->submit_kwqes(dev, wqes, num_wqes);
2801 }
2802
2803 static int cnic_cm_close_req(struct cnic_sock *csk)
2804 {
2805         struct cnic_dev *dev = csk->dev;
2806         struct l4_kwq_close_req *l4kwqe;
2807         struct kwqe *wqes[1];
2808
2809         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
2810         memset(l4kwqe, 0, sizeof(*l4kwqe));
2811         wqes[0] = (struct kwqe *) l4kwqe;
2812
2813         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
2814         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
2815         l4kwqe->cid = csk->cid;
2816
2817         return dev->submit_kwqes(dev, wqes, 1);
2818 }
2819
2820 static int cnic_cm_abort_req(struct cnic_sock *csk)
2821 {
2822         struct cnic_dev *dev = csk->dev;
2823         struct l4_kwq_reset_req *l4kwqe;
2824         struct kwqe *wqes[1];
2825
2826         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
2827         memset(l4kwqe, 0, sizeof(*l4kwqe));
2828         wqes[0] = (struct kwqe *) l4kwqe;
2829
2830         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
2831         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
2832         l4kwqe->cid = csk->cid;
2833
2834         return dev->submit_kwqes(dev, wqes, 1);
2835 }
2836
2837 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
2838                           u32 l5_cid, struct cnic_sock **csk, void *context)
2839 {
2840         struct cnic_local *cp = dev->cnic_priv;
2841         struct cnic_sock *csk1;
2842
2843         if (l5_cid >= MAX_CM_SK_TBL_SZ)
2844                 return -EINVAL;
2845
2846         if (cp->ctx_tbl) {
2847                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2848
2849                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2850                         return -EAGAIN;
2851         }
2852
2853         csk1 = &cp->csk_tbl[l5_cid];
2854         if (atomic_read(&csk1->ref_count))
2855                 return -EAGAIN;
2856
2857         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
2858                 return -EBUSY;
2859
2860         csk1->dev = dev;
2861         csk1->cid = cid;
2862         csk1->l5_cid = l5_cid;
2863         csk1->ulp_type = ulp_type;
2864         csk1->context = context;
2865
2866         csk1->ka_timeout = DEF_KA_TIMEOUT;
2867         csk1->ka_interval = DEF_KA_INTERVAL;
2868         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
2869         csk1->tos = DEF_TOS;
2870         csk1->ttl = DEF_TTL;
2871         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
2872         csk1->rcv_buf = DEF_RCV_BUF;
2873         csk1->snd_buf = DEF_SND_BUF;
2874         csk1->seed = DEF_SEED;
2875
2876         *csk = csk1;
2877         return 0;
2878 }
2879
2880 static void cnic_cm_cleanup(struct cnic_sock *csk)
2881 {
2882         if (csk->src_port) {
2883                 struct cnic_dev *dev = csk->dev;
2884                 struct cnic_local *cp = dev->cnic_priv;
2885
2886                 cnic_free_id(&cp->csk_port_tbl, csk->src_port);
2887                 csk->src_port = 0;
2888         }
2889 }
2890
2891 static void cnic_close_conn(struct cnic_sock *csk)
2892 {
2893         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
2894                 cnic_cm_upload_pg(csk);
2895                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
2896         }
2897         cnic_cm_cleanup(csk);
2898 }
2899
2900 static int cnic_cm_destroy(struct cnic_sock *csk)
2901 {
2902         if (!cnic_in_use(csk))
2903                 return -EINVAL;
2904
2905         csk_hold(csk);
2906         clear_bit(SK_F_INUSE, &csk->flags);
2907         smp_mb__after_clear_bit();
2908         while (atomic_read(&csk->ref_count) != 1)
2909                 msleep(1);
2910         cnic_cm_cleanup(csk);
2911
2912         csk->flags = 0;
2913         csk_put(csk);
2914         return 0;
2915 }
2916
2917 static inline u16 cnic_get_vlan(struct net_device *dev,
2918                                 struct net_device **vlan_dev)
2919 {
2920         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2921                 *vlan_dev = vlan_dev_real_dev(dev);
2922                 return vlan_dev_vlan_id(dev);
2923         }
2924         *vlan_dev = dev;
2925         return 0;
2926 }
2927
2928 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
2929                              struct dst_entry **dst)
2930 {
2931 #if defined(CONFIG_INET)
2932         struct flowi fl;
2933         int err;
2934         struct rtable *rt;
2935
2936         memset(&fl, 0, sizeof(fl));
2937         fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
2938
2939         err = ip_route_output_key(&init_net, &rt, &fl);
2940         if (!err)
2941                 *dst = &rt->dst;
2942         return err;
2943 #else
2944         return -ENETUNREACH;
2945 #endif
2946 }
2947
2948 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
2949                              struct dst_entry **dst)
2950 {
2951 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2952         struct flowi fl;
2953
2954         memset(&fl, 0, sizeof(fl));
2955         ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
2956         if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
2957                 fl.oif = dst_addr->sin6_scope_id;
2958
2959         *dst = ip6_route_output(&init_net, NULL, &fl);
2960         if (*dst)
2961                 return 0;
2962 #endif
2963
2964         return -ENETUNREACH;
2965 }
2966
2967 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
2968                                            int ulp_type)
2969 {
2970         struct cnic_dev *dev = NULL;
2971         struct dst_entry *dst;
2972         struct net_device *netdev = NULL;
2973         int err = -ENETUNREACH;
2974
2975         if (dst_addr->sin_family == AF_INET)
2976                 err = cnic_get_v4_route(dst_addr, &dst);
2977         else if (dst_addr->sin_family == AF_INET6) {
2978                 struct sockaddr_in6 *dst_addr6 =
2979                         (struct sockaddr_in6 *) dst_addr;
2980
2981                 err = cnic_get_v6_route(dst_addr6, &dst);
2982         } else
2983                 return NULL;
2984
2985         if (err)
2986                 return NULL;
2987
2988         if (!dst->dev)
2989                 goto done;
2990
2991         cnic_get_vlan(dst->dev, &netdev);
2992
2993         dev = cnic_from_netdev(netdev);
2994
2995 done:
2996         dst_release(dst);
2997         if (dev)
2998                 cnic_put(dev);
2999         return dev;
3000 }
3001
3002 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3003 {
3004         struct cnic_dev *dev = csk->dev;
3005         struct cnic_local *cp = dev->cnic_priv;
3006
3007         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3008 }
3009
3010 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3011 {
3012         struct cnic_dev *dev = csk->dev;
3013         struct cnic_local *cp = dev->cnic_priv;
3014         int is_v6, rc = 0;
3015         struct dst_entry *dst = NULL;
3016         struct net_device *realdev;
3017         u32 local_port;
3018
3019         if (saddr->local.v6.sin6_family == AF_INET6 &&
3020             saddr->remote.v6.sin6_family == AF_INET6)
3021                 is_v6 = 1;
3022         else if (saddr->local.v4.sin_family == AF_INET &&
3023                  saddr->remote.v4.sin_family == AF_INET)
3024                 is_v6 = 0;
3025         else
3026                 return -EINVAL;
3027
3028         clear_bit(SK_F_IPV6, &csk->flags);
3029
3030         if (is_v6) {
3031                 set_bit(SK_F_IPV6, &csk->flags);
3032                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3033
3034                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3035                        sizeof(struct in6_addr));
3036                 csk->dst_port = saddr->remote.v6.sin6_port;
3037                 local_port = saddr->local.v6.sin6_port;
3038
3039         } else {
3040                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3041
3042                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3043                 csk->dst_port = saddr->remote.v4.sin_port;
3044                 local_port = saddr->local.v4.sin_port;
3045         }
3046
3047         csk->vlan_id = 0;
3048         csk->mtu = dev->netdev->mtu;
3049         if (dst && dst->dev) {
3050                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3051                 if (realdev == dev->netdev) {
3052                         csk->vlan_id = vlan;
3053                         csk->mtu = dst_mtu(dst);
3054                 }
3055         }
3056
3057         if (local_port >= CNIC_LOCAL_PORT_MIN &&
3058             local_port < CNIC_LOCAL_PORT_MAX) {
3059                 if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
3060                         local_port = 0;
3061         } else
3062                 local_port = 0;
3063
3064         if (!local_port) {
3065                 local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
3066                 if (local_port == -1) {
3067                         rc = -ENOMEM;
3068                         goto err_out;
3069                 }
3070         }
3071         csk->src_port = local_port;
3072
3073 err_out:
3074         dst_release(dst);
3075         return rc;
3076 }
3077
3078 static void cnic_init_csk_state(struct cnic_sock *csk)
3079 {
3080         csk->state = 0;
3081         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3082         clear_bit(SK_F_CLOSING, &csk->flags);
3083 }
3084
3085 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3086 {
3087         int err = 0;
3088
3089         if (!cnic_in_use(csk))
3090                 return -EINVAL;
3091
3092         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3093                 return -EINVAL;
3094
3095         cnic_init_csk_state(csk);
3096
3097         err = cnic_get_route(csk, saddr);
3098         if (err)
3099                 goto err_out;
3100
3101         err = cnic_resolve_addr(csk, saddr);
3102         if (!err)
3103                 return 0;
3104
3105 err_out:
3106         clear_bit(SK_F_CONNECT_START, &csk->flags);
3107         return err;
3108 }
3109
3110 static int cnic_cm_abort(struct cnic_sock *csk)
3111 {
3112         struct cnic_local *cp = csk->dev->cnic_priv;
3113         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3114
3115         if (!cnic_in_use(csk))
3116                 return -EINVAL;
3117
3118         if (cnic_abort_prep(csk))
3119                 return cnic_cm_abort_req(csk);
3120
3121         /* Getting here means that we haven't started connect, or
3122          * connect was not successful.
3123          */
3124
3125         cp->close_conn(csk, opcode);
3126         if (csk->state != opcode)
3127                 return -EALREADY;
3128
3129         return 0;
3130 }
3131
3132 static int cnic_cm_close(struct cnic_sock *csk)
3133 {
3134         if (!cnic_in_use(csk))
3135                 return -EINVAL;
3136
3137         if (cnic_close_prep(csk)) {
3138                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3139                 return cnic_cm_close_req(csk);
3140         } else {
3141                 return -EALREADY;
3142         }
3143         return 0;
3144 }
3145
3146 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3147                            u8 opcode)
3148 {
3149         struct cnic_ulp_ops *ulp_ops;
3150         int ulp_type = csk->ulp_type;
3151
3152         rcu_read_lock();
3153         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3154         if (ulp_ops) {
3155                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3156                         ulp_ops->cm_connect_complete(csk);
3157                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3158                         ulp_ops->cm_close_complete(csk);
3159                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3160                         ulp_ops->cm_remote_abort(csk);
3161                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3162                         ulp_ops->cm_abort_complete(csk);
3163                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3164                         ulp_ops->cm_remote_close(csk);
3165         }
3166         rcu_read_unlock();
3167 }
3168
3169 static int cnic_cm_set_pg(struct cnic_sock *csk)
3170 {
3171         if (cnic_offld_prep(csk)) {
3172                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3173                         cnic_cm_update_pg(csk);
3174                 else
3175                         cnic_cm_offload_pg(csk);
3176         }
3177         return 0;
3178 }
3179
3180 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3181 {
3182         struct cnic_local *cp = dev->cnic_priv;
3183         u32 l5_cid = kcqe->pg_host_opaque;
3184         u8 opcode = kcqe->op_code;
3185         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3186
3187         csk_hold(csk);
3188         if (!cnic_in_use(csk))
3189                 goto done;
3190
3191         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3192                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3193                 goto done;
3194         }
3195         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3196         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3197                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3198                 cnic_cm_upcall(cp, csk,
3199                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3200                 goto done;
3201         }
3202
3203         csk->pg_cid = kcqe->pg_cid;
3204         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3205         cnic_cm_conn_req(csk);
3206
3207 done:
3208         csk_put(csk);
3209 }
3210
3211 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3212 {
3213         struct cnic_local *cp = dev->cnic_priv;
3214         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3215         u8 opcode = l4kcqe->op_code;
3216         u32 l5_cid;
3217         struct cnic_sock *csk;
3218
3219         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3220             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3221                 cnic_cm_process_offld_pg(dev, l4kcqe);
3222                 return;
3223         }
3224
3225         l5_cid = l4kcqe->conn_id;
3226         if (opcode & 0x80)
3227                 l5_cid = l4kcqe->cid;
3228         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3229                 return;
3230
3231         csk = &cp->csk_tbl[l5_cid];
3232         csk_hold(csk);
3233
3234         if (!cnic_in_use(csk)) {
3235                 csk_put(csk);
3236                 return;
3237         }
3238
3239         switch (opcode) {
3240         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3241                 if (l4kcqe->status != 0) {
3242                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3243                         cnic_cm_upcall(cp, csk,
3244                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3245                 }
3246                 break;
3247         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3248                 if (l4kcqe->status == 0)
3249                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3250
3251                 smp_mb__before_clear_bit();
3252                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3253                 cnic_cm_upcall(cp, csk, opcode);
3254                 break;
3255
3256         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3257         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3258         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3259         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3260         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3261                 cp->close_conn(csk, opcode);
3262                 break;
3263
3264         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3265                 cnic_cm_upcall(cp, csk, opcode);
3266                 break;
3267         }
3268         csk_put(csk);
3269 }
3270
3271 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3272 {
3273         struct cnic_dev *dev = data;
3274         int i;
3275
3276         for (i = 0; i < num; i++)
3277                 cnic_cm_process_kcqe(dev, kcqe[i]);
3278 }
3279
3280 static struct cnic_ulp_ops cm_ulp_ops = {
3281         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3282 };
3283
3284 static void cnic_cm_free_mem(struct cnic_dev *dev)
3285 {
3286         struct cnic_local *cp = dev->cnic_priv;
3287
3288         kfree(cp->csk_tbl);
3289         cp->csk_tbl = NULL;
3290         cnic_free_id_tbl(&cp->csk_port_tbl);
3291 }
3292
3293 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3294 {
3295         struct cnic_local *cp = dev->cnic_priv;
3296
3297         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3298                               GFP_KERNEL);
3299         if (!cp->csk_tbl)
3300                 return -ENOMEM;
3301
3302         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3303                              CNIC_LOCAL_PORT_MIN)) {
3304                 cnic_cm_free_mem(dev);
3305                 return -ENOMEM;
3306         }
3307         return 0;
3308 }
3309
3310 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3311 {
3312         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
3313                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
3314                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
3315                 csk->state = opcode;
3316         }
3317
3318         /* 1. If event opcode matches the expected event in csk->state
3319          * 2. If the expected event is CLOSE_COMP, we accept any event
3320          * 3. If the expected event is 0, meaning the connection was never
3321          *    never established, we accept the opcode from cm_abort.
3322          */
3323         if (opcode == csk->state || csk->state == 0 ||
3324             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) {
3325                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
3326                         if (csk->state == 0)
3327                                 csk->state = opcode;
3328                         return 1;
3329                 }
3330         }
3331         return 0;
3332 }
3333
3334 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3335 {
3336         struct cnic_dev *dev = csk->dev;
3337         struct cnic_local *cp = dev->cnic_priv;
3338
3339         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
3340                 cnic_cm_upcall(cp, csk, opcode);
3341                 return;
3342         }
3343
3344         clear_bit(SK_F_CONNECT_START, &csk->flags);
3345         cnic_close_conn(csk);
3346         csk->state = opcode;
3347         cnic_cm_upcall(cp, csk, opcode);
3348 }
3349
3350 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3351 {
3352 }
3353
3354 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3355 {
3356         u32 seed;
3357
3358         get_random_bytes(&seed, 4);
3359         cnic_ctx_wr(dev, 45, 0, seed);
3360         return 0;
3361 }
3362
3363 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3364 {
3365         struct cnic_dev *dev = csk->dev;
3366         struct cnic_local *cp = dev->cnic_priv;
3367         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3368         union l5cm_specific_data l5_data;
3369         u32 cmd = 0;
3370         int close_complete = 0;
3371
3372         switch (opcode) {
3373         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3374         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3375         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3376                 if (cnic_ready_to_close(csk, opcode)) {
3377                         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3378                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3379                         else
3380                                 close_complete = 1;
3381                 }
3382                 break;
3383         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3384                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3385                 break;
3386         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3387                 close_complete = 1;
3388                 break;
3389         }
3390         if (cmd) {
3391                 memset(&l5_data, 0, sizeof(l5_data));
3392
3393                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3394                                     &l5_data);
3395         } else if (close_complete) {
3396                 ctx->timestamp = jiffies;
3397                 cnic_close_conn(csk);
3398                 cnic_cm_upcall(cp, csk, csk->state);
3399         }
3400 }
3401
3402 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3403 {
3404         struct cnic_local *cp = dev->cnic_priv;
3405         int i;
3406
3407         if (!cp->ctx_tbl)
3408                 return;
3409
3410         if (!netif_running(dev->netdev))
3411                 return;
3412
3413         for (i = 0; i < cp->max_cid_space; i++) {
3414                 struct cnic_context *ctx = &cp->ctx_tbl[i];
3415
3416                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3417                         msleep(10);
3418
3419                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3420                         netdev_warn(dev->netdev, "CID %x not deleted\n",
3421                                    ctx->cid);
3422         }
3423
3424         cancel_delayed_work(&cp->delete_task);
3425         flush_workqueue(cnic_wq);
3426
3427         if (atomic_read(&cp->iscsi_conn) != 0)
3428                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
3429                             atomic_read(&cp->iscsi_conn));
3430 }
3431
3432 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3433 {
3434         struct cnic_local *cp = dev->cnic_priv;
3435         u32 pfid = cp->pfid;
3436         u32 port = CNIC_PORT(cp);
3437
3438         cnic_init_bnx2x_mac(dev);
3439         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3440
3441         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3442                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
3443
3444         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3445                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
3446         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3447                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
3448                 DEF_MAX_DA_COUNT);
3449
3450         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3451                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
3452         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3453                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
3454         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3455                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
3456         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3457                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
3458
3459         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
3460                 DEF_MAX_CWND);
3461         return 0;
3462 }
3463
3464 static void cnic_delete_task(struct work_struct *work)
3465 {
3466         struct cnic_local *cp;
3467         struct cnic_dev *dev;
3468         u32 i;
3469         int need_resched = 0;
3470
3471         cp = container_of(work, struct cnic_local, delete_task.work);
3472         dev = cp->dev;
3473
3474         for (i = 0; i < cp->max_cid_space; i++) {
3475                 struct cnic_context *ctx = &cp->ctx_tbl[i];
3476
3477                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
3478                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3479                         continue;
3480
3481                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
3482                         need_resched = 1;
3483                         continue;
3484                 }
3485
3486                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3487                         continue;
3488
3489                 cnic_bnx2x_destroy_ramrod(dev, i);
3490
3491                 cnic_free_bnx2x_conn_resc(dev, i);
3492                 if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
3493                         atomic_dec(&cp->iscsi_conn);
3494
3495                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
3496         }
3497
3498         if (need_resched)
3499                 queue_delayed_work(cnic_wq, &cp->delete_task,
3500                                    msecs_to_jiffies(10));
3501
3502 }
3503
3504 static int cnic_cm_open(struct cnic_dev *dev)
3505 {
3506         struct cnic_local *cp = dev->cnic_priv;
3507         int err;
3508
3509         err = cnic_cm_alloc_mem(dev);
3510         if (err)
3511                 return err;
3512
3513         err = cp->start_cm(dev);
3514
3515         if (err)
3516                 goto err_out;
3517
3518         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
3519
3520         dev->cm_create = cnic_cm_create;
3521         dev->cm_destroy = cnic_cm_destroy;
3522         dev->cm_connect = cnic_cm_connect;
3523         dev->cm_abort = cnic_cm_abort;
3524         dev->cm_close = cnic_cm_close;
3525         dev->cm_select_dev = cnic_cm_select_dev;
3526
3527         cp->ulp_handle[CNIC_ULP_L4] = dev;
3528         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
3529         return 0;
3530
3531 err_out:
3532         cnic_cm_free_mem(dev);
3533         return err;
3534 }
3535
3536 static int cnic_cm_shutdown(struct cnic_dev *dev)
3537 {
3538         struct cnic_local *cp = dev->cnic_priv;
3539         int i;
3540
3541         cp->stop_cm(dev);
3542
3543         if (!cp->csk_tbl)
3544                 return 0;
3545
3546         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
3547                 struct cnic_sock *csk = &cp->csk_tbl[i];
3548
3549                 clear_bit(SK_F_INUSE, &csk->flags);
3550                 cnic_cm_cleanup(csk);
3551         }
3552         cnic_cm_free_mem(dev);
3553
3554         return 0;
3555 }
3556
3557 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
3558 {
3559         u32 cid_addr;
3560         int i;
3561
3562         cid_addr = GET_CID_ADDR(cid);
3563
3564         for (i = 0; i < CTX_SIZE; i += 4)
3565                 cnic_ctx_wr(dev, cid_addr, i, 0);
3566 }
3567
3568 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
3569 {
3570         struct cnic_local *cp = dev->cnic_priv;
3571         int ret = 0, i;
3572         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
3573
3574         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3575                 return 0;
3576
3577         for (i = 0; i < cp->ctx_blks; i++) {
3578                 int j;
3579                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
3580                 u32 val;
3581
3582                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
3583
3584                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
3585                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
3586                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
3587                         (u64) cp->ctx_arr[i].mapping >> 32);
3588                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
3589                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
3590                 for (j = 0; j < 10; j++) {
3591
3592                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
3593                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
3594                                 break;
3595                         udelay(5);
3596                 }
3597                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
3598                         ret = -EBUSY;
3599                         break;
3600                 }
3601         }
3602         return ret;
3603 }
3604
3605 static void cnic_free_irq(struct cnic_dev *dev)
3606 {
3607         struct cnic_local *cp = dev->cnic_priv;
3608         struct cnic_eth_dev *ethdev = cp->ethdev;
3609
3610         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3611                 cp->disable_int_sync(dev);
3612                 tasklet_kill(&cp->cnic_irq_task);
3613                 free_irq(ethdev->irq_arr[0].vector, dev);
3614         }
3615 }
3616
3617 static int cnic_request_irq(struct cnic_dev *dev)
3618 {
3619         struct cnic_local *cp = dev->cnic_priv;
3620         struct cnic_eth_dev *ethdev = cp->ethdev;
3621         int err;
3622
3623         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
3624         if (err)
3625                 tasklet_disable(&cp->cnic_irq_task);
3626
3627         return err;
3628 }
3629
3630 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
3631 {
3632         struct cnic_local *cp = dev->cnic_priv;
3633         struct cnic_eth_dev *ethdev = cp->ethdev;
3634
3635         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3636                 int err, i = 0;
3637                 int sblk_num = cp->status_blk_num;
3638                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
3639                            BNX2_HC_SB_CONFIG_1;
3640
3641                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
3642
3643                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
3644                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
3645                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
3646
3647                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
3648                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
3649                              (unsigned long) dev);
3650                 err = cnic_request_irq(dev);
3651                 if (err)
3652                         return err;
3653
3654                 while (cp->status_blk.bnx2->status_completion_producer_index &&
3655                        i < 10) {
3656                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
3657                                 1 << (11 + sblk_num));
3658                         udelay(10);
3659                         i++;
3660                         barrier();
3661                 }
3662                 if (cp->status_blk.bnx2->status_completion_producer_index) {
3663                         cnic_free_irq(dev);
3664                         goto failed;
3665                 }
3666
3667         } else {
3668                 struct status_block *sblk = cp->status_blk.gen;
3669                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
3670                 int i = 0;
3671
3672                 while (sblk->status_completion_producer_index && i < 10) {
3673                         CNIC_WR(dev, BNX2_HC_COMMAND,
3674                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
3675                         udelay(10);
3676                         i++;
3677                         barrier();
3678                 }
3679                 if (sblk->status_completion_producer_index)
3680                         goto failed;
3681
3682         }
3683         return 0;
3684
3685 failed:
3686         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
3687         return -EBUSY;
3688 }
3689
3690 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
3691 {
3692         struct cnic_local *cp = dev->cnic_priv;
3693         struct cnic_eth_dev *ethdev = cp->ethdev;
3694
3695         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3696                 return;
3697
3698         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3699                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3700 }
3701
3702 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
3703 {
3704         struct cnic_local *cp = dev->cnic_priv;
3705         struct cnic_eth_dev *ethdev = cp->ethdev;
3706
3707         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3708                 return;
3709
3710         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3711                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
3712         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
3713         synchronize_irq(ethdev->irq_arr[0].vector);
3714 }
3715
3716 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
3717 {
3718         struct cnic_local *cp = dev->cnic_priv;
3719         struct cnic_eth_dev *ethdev = cp->ethdev;
3720         struct cnic_uio_dev *udev = cp->udev;
3721         u32 cid_addr, tx_cid, sb_id;
3722         u32 val, offset0, offset1, offset2, offset3;
3723         int i;
3724         struct tx_bd *txbd;
3725         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
3726         struct status_block *s_blk = cp->status_blk.gen;
3727
3728         sb_id = cp->status_blk_num;
3729         tx_cid = 20;
3730         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
3731         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3732                 struct status_block_msix *sblk = cp->status_blk.bnx2;
3733
3734                 tx_cid = TX_TSS_CID + sb_id - 1;
3735                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
3736                         (TX_TSS_CID << 7));
3737                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
3738         }
3739         cp->tx_cons = *cp->tx_cons_ptr;
3740
3741         cid_addr = GET_CID_ADDR(tx_cid);
3742         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
3743                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
3744
3745                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
3746                         cnic_ctx_wr(dev, cid_addr2, i, 0);
3747
3748                 offset0 = BNX2_L2CTX_TYPE_XI;
3749                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
3750                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
3751                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
3752         } else {
3753                 cnic_init_context(dev, tx_cid);
3754                 cnic_init_context(dev, tx_cid + 1);
3755
3756                 offset0 = BNX2_L2CTX_TYPE;
3757                 offset1 = BNX2_L2CTX_CMD_TYPE;
3758                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
3759                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
3760         }
3761         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
3762         cnic_ctx_wr(dev, cid_addr, offset0, val);
3763
3764         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
3765         cnic_ctx_wr(dev, cid_addr, offset1, val);
3766
3767         txbd = (struct tx_bd *) udev->l2_ring;
3768
3769         buf_map = udev->l2_buf_map;
3770         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
3771                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
3772                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3773         }
3774         val = (u64) ring_map >> 32;
3775         cnic_ctx_wr(dev, cid_addr, offset2, val);
3776         txbd->tx_bd_haddr_hi = val;
3777
3778         val = (u64) ring_map & 0xffffffff;
3779         cnic_ctx_wr(dev, cid_addr, offset3, val);
3780         txbd->tx_bd_haddr_lo = val;
3781 }
3782
3783 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
3784 {
3785         struct cnic_local *cp = dev->cnic_priv;
3786         struct cnic_eth_dev *ethdev = cp->ethdev;
3787         struct cnic_uio_dev *udev = cp->udev;
3788         u32 cid_addr, sb_id, val, coal_reg, coal_val;
3789         int i;
3790         struct rx_bd *rxbd;
3791         struct status_block *s_blk = cp->status_blk.gen;
3792         dma_addr_t ring_map = udev->l2_ring_map;
3793
3794         sb_id = cp->status_blk_num;
3795         cnic_init_context(dev, 2);
3796         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
3797         coal_reg = BNX2_HC_COMMAND;
3798         coal_val = CNIC_RD(dev, coal_reg);
3799         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3800                 struct status_block_msix *sblk = cp->status_blk.bnx2;
3801
3802                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
3803                 coal_reg = BNX2_HC_COALESCE_NOW;
3804                 coal_val = 1 << (11 + sb_id);
3805         }
3806         i = 0;
3807         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
3808                 CNIC_WR(dev, coal_reg, coal_val);
3809                 udelay(10);
3810                 i++;
3811                 barrier();
3812         }
3813         cp->rx_cons = *cp->rx_cons_ptr;
3814
3815         cid_addr = GET_CID_ADDR(2);
3816         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
3817               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
3818         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
3819
3820         if (sb_id == 0)
3821                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
3822         else
3823                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
3824         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
3825
3826         rxbd = (struct rx_bd *) (udev->l2_ring + BCM_PAGE_SIZE);
3827         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
3828                 dma_addr_t buf_map;
3829                 int n = (i % cp->l2_rx_ring_size) + 1;
3830
3831                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
3832                 rxbd->rx_bd_len = cp->l2_single_buf_size;
3833                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
3834                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
3835                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3836         }
3837         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
3838         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
3839         rxbd->rx_bd_haddr_hi = val;
3840
3841         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3842         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
3843         rxbd->rx_bd_haddr_lo = val;
3844
3845         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
3846         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
3847 }
3848
3849 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
3850 {
3851         struct kwqe *wqes[1], l2kwqe;
3852
3853         memset(&l2kwqe, 0, sizeof(l2kwqe));
3854         wqes[0] = &l2kwqe;
3855         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) |
3856                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
3857                                KWQE_OPCODE_SHIFT) | 2;
3858         dev->submit_kwqes(dev, wqes, 1);
3859 }
3860
3861 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
3862 {
3863         struct cnic_local *cp = dev->cnic_priv;
3864         u32 val;
3865
3866         val = cp->func << 2;
3867
3868         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
3869
3870         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3871                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
3872         dev->mac_addr[0] = (u8) (val >> 8);
3873         dev->mac_addr[1] = (u8) val;
3874
3875         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
3876
3877         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3878                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
3879         dev->mac_addr[2] = (u8) (val >> 24);
3880         dev->mac_addr[3] = (u8) (val >> 16);
3881         dev->mac_addr[4] = (u8) (val >> 8);
3882         dev->mac_addr[5] = (u8) val;
3883
3884         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
3885
3886         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
3887         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3888                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
3889
3890         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
3891         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
3892         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
3893 }
3894
3895 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
3896 {
3897         struct cnic_local *cp = dev->cnic_priv;
3898         struct cnic_eth_dev *ethdev = cp->ethdev;
3899         struct status_block *sblk = cp->status_blk.gen;
3900         u32 val, kcq_cid_addr, kwq_cid_addr;
3901         int err;
3902
3903         cnic_set_bnx2_mac(dev);
3904
3905         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
3906         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
3907         if (BCM_PAGE_BITS > 12)
3908                 val |= (12 - 8)  << 4;
3909         else
3910                 val |= (BCM_PAGE_BITS - 8)  << 4;
3911
3912         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
3913
3914         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
3915         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
3916         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
3917
3918         err = cnic_setup_5709_context(dev, 1);
3919         if (err)
3920                 return err;
3921
3922         cnic_init_context(dev, KWQ_CID);
3923         cnic_init_context(dev, KCQ_CID);
3924
3925         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
3926         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
3927
3928         cp->max_kwq_idx = MAX_KWQ_IDX;
3929         cp->kwq_prod_idx = 0;
3930         cp->kwq_con_idx = 0;
3931         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
3932
3933         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
3934                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
3935         else
3936                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
3937
3938         /* Initialize the kernel work queue context. */
3939         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3940               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3941         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
3942
3943         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
3944         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3945
3946         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
3947         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3948
3949         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
3950         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3951
3952         val = (u32) cp->kwq_info.pgtbl_map;
3953         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3954
3955         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
3956         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
3957
3958         cp->kcq1.sw_prod_idx = 0;
3959         cp->kcq1.hw_prod_idx_ptr =
3960                 (u16 *) &sblk->status_completion_producer_index;
3961
3962         cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
3963
3964         /* Initialize the kernel complete queue context. */
3965         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3966               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3967         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
3968
3969         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
3970         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3971
3972         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
3973         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3974
3975         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
3976         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3977
3978         val = (u32) cp->kcq1.dma.pgtbl_map;
3979         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3980
3981         cp->int_num = 0;
3982         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3983                 struct status_block_msix *msblk = cp->status_blk.bnx2;
3984                 u32 sb_id = cp->status_blk_num;
3985                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
3986
3987                 cp->kcq1.hw_prod_idx_ptr =
3988                         (u16 *) &msblk->status_completion_producer_index;
3989                 cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
3990                 cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
3991                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
3992                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3993                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3994         }
3995
3996         /* Enable Commnad Scheduler notification when we write to the
3997          * host producer index of the kernel contexts. */
3998         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
3999
4000         /* Enable Command Scheduler notification when we write to either
4001          * the Send Queue or Receive Queue producer indexes of the kernel
4002          * bypass contexts. */
4003         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4004         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4005
4006         /* Notify COM when the driver post an application buffer. */
4007         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4008
4009         /* Set the CP and COM doorbells.  These two processors polls the
4010          * doorbell for a non zero value before running.  This must be done
4011          * after setting up the kernel queue contexts. */
4012         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4013         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4014
4015         cnic_init_bnx2_tx_ring(dev);
4016         cnic_init_bnx2_rx_ring(dev);
4017
4018         err = cnic_init_bnx2_irq(dev);
4019         if (err) {
4020                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4021                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4022                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4023                 return err;
4024         }
4025
4026         return 0;
4027 }
4028
4029 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4030 {
4031         struct cnic_local *cp = dev->cnic_priv;
4032         struct cnic_eth_dev *ethdev = cp->ethdev;
4033         u32 start_offset = ethdev->ctx_tbl_offset;
4034         int i;
4035
4036         for (i = 0; i < cp->ctx_blks; i++) {
4037                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4038                 dma_addr_t map = ctx->mapping;
4039
4040                 if (cp->ctx_align) {
4041                         unsigned long mask = cp->ctx_align - 1;
4042
4043                         map = (map + mask) & ~mask;
4044                 }
4045
4046                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4047         }
4048 }
4049
4050 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4051 {
4052         struct cnic_local *cp = dev->cnic_priv;
4053         struct cnic_eth_dev *ethdev = cp->ethdev;
4054         int err = 0;
4055
4056         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4057                      (unsigned long) dev);
4058         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4059                 err = cnic_request_irq(dev);
4060
4061         return err;
4062 }
4063
4064 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4065                                                 u16 sb_id, u8 sb_index,
4066                                                 u8 disable)
4067 {
4068
4069         u32 addr = BAR_CSTRORM_INTMEM +
4070                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4071                         offsetof(struct hc_status_block_data_e1x, index_data) +
4072                         sizeof(struct hc_index_data)*sb_index +
4073                         offsetof(struct hc_index_data, flags);
4074         u16 flags = CNIC_RD16(dev, addr);
4075         /* clear and set */
4076         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4077         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4078                   HC_INDEX_DATA_HC_ENABLED);
4079         CNIC_WR16(dev, addr, flags);
4080 }
4081
4082 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4083 {
4084         struct cnic_local *cp = dev->cnic_priv;
4085         u8 sb_id = cp->status_blk_num;
4086
4087         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4088                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4089                         offsetof(struct hc_status_block_data_e1x, index_data) +
4090                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4091                         offsetof(struct hc_index_data, timeout), 64 / 12);
4092         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4093 }
4094
4095 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4096 {
4097 }
4098
4099 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4100                                     struct client_init_ramrod_data *data)
4101 {
4102         struct cnic_local *cp = dev->cnic_priv;
4103         struct cnic_uio_dev *udev = cp->udev;
4104         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4105         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4106         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4107         int port = CNIC_PORT(cp);
4108         int i;
4109         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4110         u32 val;
4111
4112         memset(txbd, 0, BCM_PAGE_SIZE);
4113
4114         buf_map = udev->l2_buf_map;
4115         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4116                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4117                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4118
4119                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4120                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4121                 reg_bd->addr_hi = start_bd->addr_hi;
4122                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4123                 start_bd->nbytes = cpu_to_le16(0x10);
4124                 start_bd->nbd = cpu_to_le16(3);
4125                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4126                 start_bd->general_data = (UNICAST_ADDRESS <<
4127                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
4128                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4129
4130         }
4131
4132         val = (u64) ring_map >> 32;
4133         txbd->next_bd.addr_hi = cpu_to_le32(val);
4134
4135         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4136
4137         val = (u64) ring_map & 0xffffffff;
4138         txbd->next_bd.addr_lo = cpu_to_le32(val);
4139
4140         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4141
4142         /* Other ramrod params */
4143         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4144         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4145
4146         /* reset xstorm per client statistics */
4147         if (cli < MAX_STAT_COUNTER_ID) {
4148                 val = BAR_XSTRORM_INTMEM +
4149                       XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4150                 for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
4151                         CNIC_WR(dev, val + i * 4, 0);
4152         }
4153
4154         cp->tx_cons_ptr =
4155                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4156 }
4157
4158 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4159                                     struct client_init_ramrod_data *data)
4160 {
4161         struct cnic_local *cp = dev->cnic_priv;
4162         struct cnic_uio_dev *udev = cp->udev;
4163         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4164                                 BCM_PAGE_SIZE);
4165         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4166                                 (udev->l2_ring + (2 * BCM_PAGE_SIZE));
4167         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4168         int i;
4169         int port = CNIC_PORT(cp);
4170         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4171         int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4172         u32 val;
4173         dma_addr_t ring_map = udev->l2_ring_map;
4174
4175         /* General data */
4176         data->general.client_id = cli;
4177         data->general.statistics_en_flg = 1;
4178         data->general.statistics_counter_id = cli;
4179         data->general.activate_flg = 1;
4180         data->general.sp_client_id = cli;
4181
4182         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4183                 dma_addr_t buf_map;
4184                 int n = (i % cp->l2_rx_ring_size) + 1;
4185
4186                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4187                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4188                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4189         }
4190
4191         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4192         rxbd->addr_hi = cpu_to_le32(val);
4193         data->rx.bd_page_base.hi = cpu_to_le32(val);
4194
4195         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4196         rxbd->addr_lo = cpu_to_le32(val);
4197         data->rx.bd_page_base.lo = cpu_to_le32(val);
4198
4199         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4200         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4201         rxcqe->addr_hi = cpu_to_le32(val);
4202         data->rx.cqe_page_base.hi = cpu_to_le32(val);
4203
4204         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4205         rxcqe->addr_lo = cpu_to_le32(val);
4206         data->rx.cqe_page_base.lo = cpu_to_le32(val);
4207
4208         /* Other ramrod params */
4209         data->rx.client_qzone_id = cl_qzone_id;
4210         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
4211         data->rx.status_block_id = BNX2X_DEF_SB_ID;
4212
4213         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4214         data->rx.bd_buff_size = cpu_to_le16(cp->l2_single_buf_size);
4215
4216         data->rx.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4217         data->rx.outer_vlan_removal_enable_flg = 1;
4218
4219         /* reset tstorm and ustorm per client statistics */
4220         if (cli < MAX_STAT_COUNTER_ID) {
4221                 val = BAR_TSTRORM_INTMEM +
4222                       TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4223                 for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
4224                         CNIC_WR(dev, val + i * 4, 0);
4225
4226                 val = BAR_USTRORM_INTMEM +
4227                       USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4228                 for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
4229                         CNIC_WR(dev, val + i * 4, 0);
4230         }
4231
4232         cp->rx_cons_ptr =
4233                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4234 }
4235
4236 static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
4237 {
4238         struct cnic_local *cp = dev->cnic_priv;
4239         u32 base, base2, addr, val;
4240         int port = CNIC_PORT(cp);
4241
4242         dev->max_iscsi_conn = 0;
4243         base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
4244         if (base == 0)
4245                 return;
4246
4247         base2 = CNIC_RD(dev, (CNIC_PATH(cp) ? MISC_REG_GENERIC_CR_1 :
4248                                               MISC_REG_GENERIC_CR_0));
4249         addr = BNX2X_SHMEM_ADDR(base,
4250                 dev_info.port_hw_config[port].iscsi_mac_upper);
4251
4252         val = CNIC_RD(dev, addr);
4253
4254         dev->mac_addr[0] = (u8) (val >> 8);
4255         dev->mac_addr[1] = (u8) val;
4256
4257         addr = BNX2X_SHMEM_ADDR(base,
4258                 dev_info.port_hw_config[port].iscsi_mac_lower);
4259
4260         val = CNIC_RD(dev, addr);
4261
4262         dev->mac_addr[2] = (u8) (val >> 24);
4263         dev->mac_addr[3] = (u8) (val >> 16);
4264         dev->mac_addr[4] = (u8) (val >> 8);
4265         dev->mac_addr[5] = (u8) val;
4266
4267         addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
4268         val = CNIC_RD(dev, addr);
4269
4270         if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
4271                 u16 val16;
4272
4273                 addr = BNX2X_SHMEM_ADDR(base,
4274                                 drv_lic_key[port].max_iscsi_init_conn);
4275                 val16 = CNIC_RD16(dev, addr);
4276
4277                 if (val16)
4278                         val16 ^= 0x1e1e;
4279                 dev->max_iscsi_conn = val16;
4280         }
4281         if (BNX2X_CHIP_IS_E1H(cp->chip_id) || BNX2X_CHIP_IS_E2(cp->chip_id)) {
4282                 int func = CNIC_FUNC(cp);
4283                 u32 mf_cfg_addr;
4284
4285                 if (BNX2X_SHMEM2_HAS(base2, mf_cfg_addr))
4286                         mf_cfg_addr = CNIC_RD(dev, BNX2X_SHMEM2_ADDR(base2,
4287                                               mf_cfg_addr));
4288                 else
4289                         mf_cfg_addr = base + BNX2X_SHMEM_MF_BLK_OFFSET;
4290
4291                 addr = mf_cfg_addr +
4292                         offsetof(struct mf_cfg, func_mf_config[func].e1hov_tag);
4293
4294                 val = CNIC_RD(dev, addr);
4295                 val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
4296                 if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
4297                         addr = mf_cfg_addr +
4298                                 offsetof(struct mf_cfg,
4299                                          func_mf_config[func].config);
4300                         val = CNIC_RD(dev, addr);
4301                         val &= FUNC_MF_CFG_PROTOCOL_MASK;
4302                         if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
4303                                 dev->max_iscsi_conn = 0;
4304                 }
4305         }
4306 }
4307
4308 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4309 {
4310         struct cnic_local *cp = dev->cnic_priv;
4311         struct cnic_eth_dev *ethdev = cp->ethdev;
4312         int func = CNIC_FUNC(cp), ret, i;
4313         u32 pfid;
4314
4315         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4316                 u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);
4317
4318                 if (!(val & 1))
4319                         val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN);
4320                 else
4321                         val = (val >> 1) & 1;
4322
4323                 if (val)
4324                         cp->pfid = func >> 1;
4325                 else
4326                         cp->pfid = func & 0x6;
4327         } else {
4328                 cp->pfid = func;
4329         }
4330         pfid = cp->pfid;
4331
4332         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4333                                cp->iscsi_start_cid);
4334
4335         if (ret)
4336                 return -ENOMEM;
4337
4338         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
4339
4340         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4341                           CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4342         cp->kcq1.sw_prod_idx = 0;
4343
4344         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4345                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4346
4347                 cp->kcq1.hw_prod_idx_ptr =
4348                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4349                 cp->kcq1.status_idx_ptr =
4350                         &sb->sb.running_index[SM_RX_ID];
4351         } else {
4352                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
4353
4354                 cp->kcq1.hw_prod_idx_ptr =
4355                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4356                 cp->kcq1.status_idx_ptr =
4357                         &sb->sb.running_index[SM_RX_ID];
4358         }
4359
4360         cnic_get_bnx2x_iscsi_info(dev);
4361
4362         /* Only 1 EQ */
4363         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
4364         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4365                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
4366         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4367                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
4368                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
4369         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4370                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
4371                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
4372         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4373                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
4374                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
4375         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4376                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
4377                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
4378         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4379                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
4380         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4381                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
4382         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4383                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
4384                 HC_INDEX_ISCSI_EQ_CONS);
4385
4386         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4387                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4388                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i),
4389                         cp->conn_buf_info.pgtbl[2 * i]);
4390                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4391                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i) + 4,
4392                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4393         }
4394
4395         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4396                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
4397                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4398         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4399                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
4400                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4401
4402         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4403                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
4404
4405         cnic_setup_bnx2x_context(dev);
4406
4407         ret = cnic_init_bnx2x_irq(dev);
4408         if (ret)
4409                 return ret;
4410
4411         return 0;
4412 }
4413
4414 static void cnic_init_rings(struct cnic_dev *dev)
4415 {
4416         struct cnic_local *cp = dev->cnic_priv;
4417         struct cnic_uio_dev *udev = cp->udev;
4418
4419         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4420                 return;
4421
4422         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4423                 cnic_init_bnx2_tx_ring(dev);
4424                 cnic_init_bnx2_rx_ring(dev);
4425                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4426         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4427                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4428                 u32 cl_qzone_id, type;
4429                 struct client_init_ramrod_data *data;
4430                 union l5cm_specific_data l5_data;
4431                 struct ustorm_eth_rx_producers rx_prods = {0};
4432                 u32 off, i;
4433
4434                 rx_prods.bd_prod = 0;
4435                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4436                 barrier();
4437
4438                 cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4439
4440                 off = BAR_USTRORM_INTMEM +
4441                         (BNX2X_CHIP_IS_E2(cp->chip_id) ?
4442                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
4443                          USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
4444
4445                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4446                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4447
4448                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4449
4450                 data = udev->l2_buf;
4451
4452                 memset(data, 0, sizeof(*data));
4453
4454                 cnic_init_bnx2x_tx_ring(dev, data);
4455                 cnic_init_bnx2x_rx_ring(dev, data);
4456
4457                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
4458                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
4459
4460                 type = (ETH_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
4461                         & SPE_HDR_CONN_TYPE;
4462                 type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
4463                         SPE_HDR_FUNCTION_ID);
4464
4465                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4466
4467                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4468                         BNX2X_ISCSI_L2_CID, type, &l5_data);
4469
4470                 i = 0;
4471                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4472                        ++i < 10)
4473                         msleep(1);
4474
4475                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4476                         netdev_err(dev->netdev,
4477                                 "iSCSI CLIENT_SETUP did not complete\n");
4478                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4479                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
4480         }
4481 }
4482
4483 static void cnic_shutdown_rings(struct cnic_dev *dev)
4484 {
4485         struct cnic_local *cp = dev->cnic_priv;
4486
4487         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4488                 return;
4489
4490         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4491                 cnic_shutdown_bnx2_rx_ring(dev);
4492         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4493                 struct cnic_local *cp = dev->cnic_priv;
4494                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4495                 union l5cm_specific_data l5_data;
4496                 int i;
4497                 u32 type;
4498
4499                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0);
4500
4501                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4502
4503                 l5_data.phy_address.lo = cli;
4504                 l5_data.phy_address.hi = 0;
4505                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4506                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4507                 i = 0;
4508                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4509                        ++i < 10)
4510                         msleep(1);
4511
4512                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4513                         netdev_err(dev->netdev,
4514                                 "iSCSI CLIENT_HALT did not complete\n");
4515                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4516
4517                 memset(&l5_data, 0, sizeof(l5_data));
4518                 type = (NONE_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
4519                         & SPE_HDR_CONN_TYPE;
4520                 type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
4521                          SPE_HDR_FUNCTION_ID);
4522                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
4523                         BNX2X_ISCSI_L2_CID, type, &l5_data);
4524                 msleep(10);
4525         }
4526         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4527 }
4528
4529 static int cnic_register_netdev(struct cnic_dev *dev)
4530 {
4531         struct cnic_local *cp = dev->cnic_priv;
4532         struct cnic_eth_dev *ethdev = cp->ethdev;
4533         int err;
4534
4535         if (!ethdev)
4536                 return -ENODEV;
4537
4538         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
4539                 return 0;
4540
4541         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4542         if (err)
4543                 netdev_err(dev->netdev, "register_cnic failed\n");
4544
4545         return err;
4546 }
4547
4548 static void cnic_unregister_netdev(struct cnic_dev *dev)
4549 {
4550         struct cnic_local *cp = dev->cnic_priv;
4551         struct cnic_eth_dev *ethdev = cp->ethdev;
4552
4553         if (!ethdev)
4554                 return;
4555
4556         ethdev->drv_unregister_cnic(dev->netdev);
4557 }
4558
4559 static int cnic_start_hw(struct cnic_dev *dev)
4560 {
4561         struct cnic_local *cp = dev->cnic_priv;
4562         struct cnic_eth_dev *ethdev = cp->ethdev;
4563         int err;
4564
4565         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
4566                 return -EALREADY;
4567
4568         dev->regview = ethdev->io_base;
4569         pci_dev_get(dev->pcidev);
4570         cp->func = PCI_FUNC(dev->pcidev->devfn);
4571         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
4572         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
4573
4574         err = cp->alloc_resc(dev);
4575         if (err) {
4576                 netdev_err(dev->netdev, "allocate resource failure\n");
4577                 goto err1;
4578         }
4579
4580         err = cp->start_hw(dev);
4581         if (err)
4582                 goto err1;
4583
4584         err = cnic_cm_open(dev);
4585         if (err)
4586                 goto err1;
4587
4588         set_bit(CNIC_F_CNIC_UP, &dev->flags);
4589
4590         cp->enable_int(dev);
4591
4592         return 0;
4593
4594 err1:
4595         cp->free_resc(dev);
4596         pci_dev_put(dev->pcidev);
4597         return err;
4598 }
4599
4600 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
4601 {
4602         cnic_disable_bnx2_int_sync(dev);
4603
4604         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4605         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4606
4607         cnic_init_context(dev, KWQ_CID);
4608         cnic_init_context(dev, KCQ_CID);
4609
4610         cnic_setup_5709_context(dev, 0);
4611         cnic_free_irq(dev);
4612
4613         cnic_free_resc(dev);
4614 }
4615
4616
4617 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
4618 {
4619         struct cnic_local *cp = dev->cnic_priv;
4620
4621         cnic_free_irq(dev);
4622         *cp->kcq1.hw_prod_idx_ptr = 0;
4623         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4624                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
4625         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
4626         cnic_free_resc(dev);
4627 }
4628
4629 static void cnic_stop_hw(struct cnic_dev *dev)
4630 {
4631         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4632                 struct cnic_local *cp = dev->cnic_priv;
4633                 int i = 0;
4634
4635                 /* Need to wait for the ring shutdown event to complete
4636                  * before clearing the CNIC_UP flag.
4637                  */
4638                 while (cp->udev->uio_dev != -1 && i < 15) {
4639                         msleep(100);
4640                         i++;
4641                 }
4642                 cnic_shutdown_rings(dev);
4643                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
4644                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
4645                 synchronize_rcu();
4646                 cnic_cm_shutdown(dev);
4647                 cp->stop_hw(dev);
4648                 pci_dev_put(dev->pcidev);
4649         }
4650 }
4651
4652 static void cnic_free_dev(struct cnic_dev *dev)
4653 {
4654         int i = 0;
4655
4656         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
4657                 msleep(100);
4658                 i++;
4659         }
4660         if (atomic_read(&dev->ref_count) != 0)
4661                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
4662
4663         netdev_info(dev->netdev, "Removed CNIC device\n");
4664         dev_put(dev->netdev);
4665         kfree(dev);
4666 }
4667
4668 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
4669                                        struct pci_dev *pdev)
4670 {
4671         struct cnic_dev *cdev;
4672         struct cnic_local *cp;
4673         int alloc_size;
4674
4675         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
4676
4677         cdev = kzalloc(alloc_size , GFP_KERNEL);
4678         if (cdev == NULL) {
4679                 netdev_err(dev, "allocate dev struct failure\n");
4680                 return NULL;
4681         }
4682
4683         cdev->netdev = dev;
4684         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
4685         cdev->register_device = cnic_register_device;
4686         cdev->unregister_device = cnic_unregister_device;
4687         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
4688
4689         cp = cdev->cnic_priv;
4690         cp->dev = cdev;
4691         cp->l2_single_buf_size = 0x400;
4692         cp->l2_rx_ring_size = 3;
4693
4694         spin_lock_init(&cp->cnic_ulp_lock);
4695
4696         netdev_info(dev, "Added CNIC device\n");
4697
4698         return cdev;
4699 }
4700
4701 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
4702 {
4703         struct pci_dev *pdev;
4704         struct cnic_dev *cdev;
4705         struct cnic_local *cp;
4706         struct cnic_eth_dev *ethdev = NULL;
4707         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4708
4709         probe = symbol_get(bnx2_cnic_probe);
4710         if (probe) {
4711                 ethdev = (*probe)(dev);
4712                 symbol_put(bnx2_cnic_probe);
4713         }
4714         if (!ethdev)
4715                 return NULL;
4716
4717         pdev = ethdev->pdev;
4718         if (!pdev)
4719                 return NULL;
4720
4721         dev_hold(dev);
4722         pci_dev_get(pdev);
4723         if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
4724             pdev->device == PCI_DEVICE_ID_NX2_5709S) {
4725                 u8 rev;
4726
4727                 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
4728                 if (rev < 0x10) {
4729                         pci_dev_put(pdev);
4730                         goto cnic_err;
4731                 }
4732         }
4733         pci_dev_put(pdev);
4734
4735         cdev = cnic_alloc_dev(dev, pdev);
4736         if (cdev == NULL)
4737                 goto cnic_err;
4738
4739         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
4740         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
4741
4742         cp = cdev->cnic_priv;
4743         cp->ethdev = ethdev;
4744         cdev->pcidev = pdev;
4745         cp->chip_id = ethdev->chip_id;
4746
4747         cp->cnic_ops = &cnic_bnx2_ops;
4748         cp->start_hw = cnic_start_bnx2_hw;
4749         cp->stop_hw = cnic_stop_bnx2_hw;
4750         cp->setup_pgtbl = cnic_setup_page_tbl;
4751         cp->alloc_resc = cnic_alloc_bnx2_resc;
4752         cp->free_resc = cnic_free_resc;
4753         cp->start_cm = cnic_cm_init_bnx2_hw;
4754         cp->stop_cm = cnic_cm_stop_bnx2_hw;
4755         cp->enable_int = cnic_enable_bnx2_int;
4756         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
4757         cp->close_conn = cnic_close_bnx2_conn;
4758         cp->next_idx = cnic_bnx2_next_idx;
4759         cp->hw_idx = cnic_bnx2_hw_idx;
4760         return cdev;
4761
4762 cnic_err:
4763         dev_put(dev);
4764         return NULL;
4765 }
4766
4767 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
4768 {
4769         struct pci_dev *pdev;
4770         struct cnic_dev *cdev;
4771         struct cnic_local *cp;
4772         struct cnic_eth_dev *ethdev = NULL;
4773         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4774
4775         probe = symbol_get(bnx2x_cnic_probe);
4776         if (probe) {
4777                 ethdev = (*probe)(dev);
4778                 symbol_put(bnx2x_cnic_probe);
4779         }
4780         if (!ethdev)
4781                 return NULL;
4782
4783         pdev = ethdev->pdev;
4784         if (!pdev)
4785                 return NULL;
4786
4787         dev_hold(dev);
4788         cdev = cnic_alloc_dev(dev, pdev);
4789         if (cdev == NULL) {
4790                 dev_put(dev);
4791                 return NULL;
4792         }
4793
4794         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
4795         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
4796
4797         cp = cdev->cnic_priv;
4798         cp->ethdev = ethdev;
4799         cdev->pcidev = pdev;
4800         cp->chip_id = ethdev->chip_id;
4801
4802         cp->cnic_ops = &cnic_bnx2x_ops;
4803         cp->start_hw = cnic_start_bnx2x_hw;
4804         cp->stop_hw = cnic_stop_bnx2x_hw;
4805         cp->setup_pgtbl = cnic_setup_page_tbl_le;
4806         cp->alloc_resc = cnic_alloc_bnx2x_resc;
4807         cp->free_resc = cnic_free_resc;
4808         cp->start_cm = cnic_cm_init_bnx2x_hw;
4809         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
4810         cp->enable_int = cnic_enable_bnx2x_int;
4811         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
4812         if (BNX2X_CHIP_IS_E2(cp->chip_id))
4813                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
4814         else
4815                 cp->ack_int = cnic_ack_bnx2x_msix;
4816         cp->close_conn = cnic_close_bnx2x_conn;
4817         cp->next_idx = cnic_bnx2x_next_idx;
4818         cp->hw_idx = cnic_bnx2x_hw_idx;
4819         return cdev;
4820 }
4821
4822 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
4823 {
4824         struct ethtool_drvinfo drvinfo;
4825         struct cnic_dev *cdev = NULL;
4826
4827         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
4828                 memset(&drvinfo, 0, sizeof(drvinfo));
4829                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
4830
4831                 if (!strcmp(drvinfo.driver, "bnx2"))
4832                         cdev = init_bnx2_cnic(dev);
4833                 if (!strcmp(drvinfo.driver, "bnx2x"))
4834                         cdev = init_bnx2x_cnic(dev);
4835                 if (cdev) {
4836                         write_lock(&cnic_dev_lock);
4837                         list_add(&cdev->list, &cnic_dev_list);
4838                         write_unlock(&cnic_dev_lock);
4839                 }
4840         }
4841         return cdev;
4842 }
4843
4844 /**
4845  * netdev event handler
4846  */
4847 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
4848                                                          void *ptr)
4849 {
4850         struct net_device *netdev = ptr;
4851         struct cnic_dev *dev;
4852         int if_type;
4853         int new_dev = 0;
4854
4855         dev = cnic_from_netdev(netdev);
4856
4857         if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
4858                 /* Check for the hot-plug device */
4859                 dev = is_cnic_dev(netdev);
4860                 if (dev) {
4861                         new_dev = 1;
4862                         cnic_hold(dev);
4863                 }
4864         }
4865         if (dev) {
4866                 struct cnic_local *cp = dev->cnic_priv;
4867
4868                 if (new_dev)
4869                         cnic_ulp_init(dev);
4870                 else if (event == NETDEV_UNREGISTER)
4871                         cnic_ulp_exit(dev);
4872
4873                 if (event == NETDEV_UP) {
4874                         if (cnic_register_netdev(dev) != 0) {
4875                                 cnic_put(dev);
4876                                 goto done;
4877                         }
4878                         if (!cnic_start_hw(dev))
4879                                 cnic_ulp_start(dev);
4880                 }
4881
4882                 rcu_read_lock();
4883                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
4884                         struct cnic_ulp_ops *ulp_ops;
4885                         void *ctx;
4886
4887                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
4888                         if (!ulp_ops || !ulp_ops->indicate_netevent)
4889                                 continue;
4890
4891                         ctx = cp->ulp_handle[if_type];
4892
4893                         ulp_ops->indicate_netevent(ctx, event);
4894                 }
4895                 rcu_read_unlock();
4896
4897                 if (event == NETDEV_GOING_DOWN) {
4898                         cnic_ulp_stop(dev);
4899                         cnic_stop_hw(dev);
4900                         cnic_unregister_netdev(dev);
4901                 } else if (event == NETDEV_UNREGISTER) {
4902                         write_lock(&cnic_dev_lock);
4903                         list_del_init(&dev->list);
4904                         write_unlock(&cnic_dev_lock);
4905
4906                         cnic_put(dev);
4907                         cnic_free_dev(dev);
4908                         goto done;
4909                 }
4910                 cnic_put(dev);
4911         }
4912 done:
4913         return NOTIFY_DONE;
4914 }
4915
4916 static struct notifier_block cnic_netdev_notifier = {
4917         .notifier_call = cnic_netdev_event
4918 };
4919
4920 static void cnic_release(void)
4921 {
4922         struct cnic_dev *dev;
4923         struct cnic_uio_dev *udev;
4924
4925         while (!list_empty(&cnic_dev_list)) {
4926                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
4927                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4928                         cnic_ulp_stop(dev);
4929                         cnic_stop_hw(dev);
4930                 }
4931
4932                 cnic_ulp_exit(dev);
4933                 cnic_unregister_netdev(dev);
4934                 list_del_init(&dev->list);
4935                 cnic_free_dev(dev);
4936         }
4937         while (!list_empty(&cnic_udev_list)) {
4938                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
4939                                   list);
4940                 cnic_free_uio(udev);
4941         }
4942 }
4943
4944 static int __init cnic_init(void)
4945 {
4946         int rc = 0;
4947
4948         pr_info("%s", version);
4949
4950         rc = register_netdevice_notifier(&cnic_netdev_notifier);
4951         if (rc) {
4952                 cnic_release();
4953                 return rc;
4954         }
4955
4956         cnic_wq = create_singlethread_workqueue("cnic_wq");
4957         if (!cnic_wq) {
4958                 cnic_release();
4959                 unregister_netdevice_notifier(&cnic_netdev_notifier);
4960                 return -ENOMEM;
4961         }
4962
4963         return 0;
4964 }
4965
4966 static void __exit cnic_exit(void)
4967 {
4968         unregister_netdevice_notifier(&cnic_netdev_notifier);
4969         cnic_release();
4970         destroy_workqueue(cnic_wq);
4971 }
4972
4973 module_init(cnic_init);
4974 module_exit(cnic_exit);