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_E1H(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_bnx2x_msix(struct cnic_dev *dev)
2410 {
2411         struct cnic_local *cp = dev->cnic_priv;
2412
2413         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
2414                            IGU_INT_DISABLE, 0);
2415 }
2416
2417 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
2418 {
2419         u32 last_status = *info->status_idx_ptr;
2420         int kcqe_cnt;
2421
2422         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
2423
2424                 service_kcqes(dev, kcqe_cnt);
2425
2426                 /* Tell compiler that sblk fields can change. */
2427                 barrier();
2428                 if (last_status == *info->status_idx_ptr)
2429                         break;
2430
2431                 last_status = *info->status_idx_ptr;
2432         }
2433         return last_status;
2434 }
2435
2436 static void cnic_service_bnx2x_bh(unsigned long data)
2437 {
2438         struct cnic_dev *dev = (struct cnic_dev *) data;
2439         struct cnic_local *cp = dev->cnic_priv;
2440         u32 status_idx;
2441
2442         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2443                 return;
2444
2445         status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
2446
2447         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
2448         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
2449                            status_idx, IGU_INT_ENABLE, 1);
2450 }
2451
2452 static int cnic_service_bnx2x(void *data, void *status_blk)
2453 {
2454         struct cnic_dev *dev = data;
2455         struct cnic_local *cp = dev->cnic_priv;
2456
2457         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
2458                 cnic_doirq(dev);
2459
2460         cnic_chk_pkt_rings(cp);
2461
2462         return 0;
2463 }
2464
2465 static void cnic_ulp_stop(struct cnic_dev *dev)
2466 {
2467         struct cnic_local *cp = dev->cnic_priv;
2468         int if_type;
2469
2470         cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2471
2472         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2473                 struct cnic_ulp_ops *ulp_ops;
2474
2475                 mutex_lock(&cnic_lock);
2476                 ulp_ops = cp->ulp_ops[if_type];
2477                 if (!ulp_ops) {
2478                         mutex_unlock(&cnic_lock);
2479                         continue;
2480                 }
2481                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2482                 mutex_unlock(&cnic_lock);
2483
2484                 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2485                         ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2486
2487                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2488         }
2489 }
2490
2491 static void cnic_ulp_start(struct cnic_dev *dev)
2492 {
2493         struct cnic_local *cp = dev->cnic_priv;
2494         int if_type;
2495
2496         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2497                 struct cnic_ulp_ops *ulp_ops;
2498
2499                 mutex_lock(&cnic_lock);
2500                 ulp_ops = cp->ulp_ops[if_type];
2501                 if (!ulp_ops || !ulp_ops->cnic_start) {
2502                         mutex_unlock(&cnic_lock);
2503                         continue;
2504                 }
2505                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2506                 mutex_unlock(&cnic_lock);
2507
2508                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2509                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2510
2511                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2512         }
2513 }
2514
2515 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
2516 {
2517         struct cnic_dev *dev = data;
2518
2519         switch (info->cmd) {
2520         case CNIC_CTL_STOP_CMD:
2521                 cnic_hold(dev);
2522
2523                 cnic_ulp_stop(dev);
2524                 cnic_stop_hw(dev);
2525
2526                 cnic_put(dev);
2527                 break;
2528         case CNIC_CTL_START_CMD:
2529                 cnic_hold(dev);
2530
2531                 if (!cnic_start_hw(dev))
2532                         cnic_ulp_start(dev);
2533
2534                 cnic_put(dev);
2535                 break;
2536         case CNIC_CTL_COMPLETION_CMD: {
2537                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
2538                 u32 l5_cid;
2539                 struct cnic_local *cp = dev->cnic_priv;
2540
2541                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
2542                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2543
2544                         ctx->wait_cond = 1;
2545                         wake_up(&ctx->waitq);
2546                 }
2547                 break;
2548         }
2549         default:
2550                 return -EINVAL;
2551         }
2552         return 0;
2553 }
2554
2555 static void cnic_ulp_init(struct cnic_dev *dev)
2556 {
2557         int i;
2558         struct cnic_local *cp = dev->cnic_priv;
2559
2560         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2561                 struct cnic_ulp_ops *ulp_ops;
2562
2563                 mutex_lock(&cnic_lock);
2564                 ulp_ops = cnic_ulp_tbl[i];
2565                 if (!ulp_ops || !ulp_ops->cnic_init) {
2566                         mutex_unlock(&cnic_lock);
2567                         continue;
2568                 }
2569                 ulp_get(ulp_ops);
2570                 mutex_unlock(&cnic_lock);
2571
2572                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2573                         ulp_ops->cnic_init(dev);
2574
2575                 ulp_put(ulp_ops);
2576         }
2577 }
2578
2579 static void cnic_ulp_exit(struct cnic_dev *dev)
2580 {
2581         int i;
2582         struct cnic_local *cp = dev->cnic_priv;
2583
2584         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2585                 struct cnic_ulp_ops *ulp_ops;
2586
2587                 mutex_lock(&cnic_lock);
2588                 ulp_ops = cnic_ulp_tbl[i];
2589                 if (!ulp_ops || !ulp_ops->cnic_exit) {
2590                         mutex_unlock(&cnic_lock);
2591                         continue;
2592                 }
2593                 ulp_get(ulp_ops);
2594                 mutex_unlock(&cnic_lock);
2595
2596                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2597                         ulp_ops->cnic_exit(dev);
2598
2599                 ulp_put(ulp_ops);
2600         }
2601 }
2602
2603 static int cnic_cm_offload_pg(struct cnic_sock *csk)
2604 {
2605         struct cnic_dev *dev = csk->dev;
2606         struct l4_kwq_offload_pg *l4kwqe;
2607         struct kwqe *wqes[1];
2608
2609         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
2610         memset(l4kwqe, 0, sizeof(*l4kwqe));
2611         wqes[0] = (struct kwqe *) l4kwqe;
2612
2613         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
2614         l4kwqe->flags =
2615                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
2616         l4kwqe->l2hdr_nbytes = ETH_HLEN;
2617
2618         l4kwqe->da0 = csk->ha[0];
2619         l4kwqe->da1 = csk->ha[1];
2620         l4kwqe->da2 = csk->ha[2];
2621         l4kwqe->da3 = csk->ha[3];
2622         l4kwqe->da4 = csk->ha[4];
2623         l4kwqe->da5 = csk->ha[5];
2624
2625         l4kwqe->sa0 = dev->mac_addr[0];
2626         l4kwqe->sa1 = dev->mac_addr[1];
2627         l4kwqe->sa2 = dev->mac_addr[2];
2628         l4kwqe->sa3 = dev->mac_addr[3];
2629         l4kwqe->sa4 = dev->mac_addr[4];
2630         l4kwqe->sa5 = dev->mac_addr[5];
2631
2632         l4kwqe->etype = ETH_P_IP;
2633         l4kwqe->ipid_start = DEF_IPID_START;
2634         l4kwqe->host_opaque = csk->l5_cid;
2635
2636         if (csk->vlan_id) {
2637                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
2638                 l4kwqe->vlan_tag = csk->vlan_id;
2639                 l4kwqe->l2hdr_nbytes += 4;
2640         }
2641
2642         return dev->submit_kwqes(dev, wqes, 1);
2643 }
2644
2645 static int cnic_cm_update_pg(struct cnic_sock *csk)
2646 {
2647         struct cnic_dev *dev = csk->dev;
2648         struct l4_kwq_update_pg *l4kwqe;
2649         struct kwqe *wqes[1];
2650
2651         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
2652         memset(l4kwqe, 0, sizeof(*l4kwqe));
2653         wqes[0] = (struct kwqe *) l4kwqe;
2654
2655         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
2656         l4kwqe->flags =
2657                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
2658         l4kwqe->pg_cid = csk->pg_cid;
2659
2660         l4kwqe->da0 = csk->ha[0];
2661         l4kwqe->da1 = csk->ha[1];
2662         l4kwqe->da2 = csk->ha[2];
2663         l4kwqe->da3 = csk->ha[3];
2664         l4kwqe->da4 = csk->ha[4];
2665         l4kwqe->da5 = csk->ha[5];
2666
2667         l4kwqe->pg_host_opaque = csk->l5_cid;
2668         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
2669
2670         return dev->submit_kwqes(dev, wqes, 1);
2671 }
2672
2673 static int cnic_cm_upload_pg(struct cnic_sock *csk)
2674 {
2675         struct cnic_dev *dev = csk->dev;
2676         struct l4_kwq_upload *l4kwqe;
2677         struct kwqe *wqes[1];
2678
2679         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
2680         memset(l4kwqe, 0, sizeof(*l4kwqe));
2681         wqes[0] = (struct kwqe *) l4kwqe;
2682
2683         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
2684         l4kwqe->flags =
2685                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
2686         l4kwqe->cid = csk->pg_cid;
2687
2688         return dev->submit_kwqes(dev, wqes, 1);
2689 }
2690
2691 static int cnic_cm_conn_req(struct cnic_sock *csk)
2692 {
2693         struct cnic_dev *dev = csk->dev;
2694         struct l4_kwq_connect_req1 *l4kwqe1;
2695         struct l4_kwq_connect_req2 *l4kwqe2;
2696         struct l4_kwq_connect_req3 *l4kwqe3;
2697         struct kwqe *wqes[3];
2698         u8 tcp_flags = 0;
2699         int num_wqes = 2;
2700
2701         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
2702         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
2703         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
2704         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
2705         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
2706         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
2707
2708         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
2709         l4kwqe3->flags =
2710                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
2711         l4kwqe3->ka_timeout = csk->ka_timeout;
2712         l4kwqe3->ka_interval = csk->ka_interval;
2713         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
2714         l4kwqe3->tos = csk->tos;
2715         l4kwqe3->ttl = csk->ttl;
2716         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
2717         l4kwqe3->pmtu = csk->mtu;
2718         l4kwqe3->rcv_buf = csk->rcv_buf;
2719         l4kwqe3->snd_buf = csk->snd_buf;
2720         l4kwqe3->seed = csk->seed;
2721
2722         wqes[0] = (struct kwqe *) l4kwqe1;
2723         if (test_bit(SK_F_IPV6, &csk->flags)) {
2724                 wqes[1] = (struct kwqe *) l4kwqe2;
2725                 wqes[2] = (struct kwqe *) l4kwqe3;
2726                 num_wqes = 3;
2727
2728                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
2729                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
2730                 l4kwqe2->flags =
2731                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
2732                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
2733                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
2734                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
2735                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
2736                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
2737                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
2738                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
2739                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
2740                                sizeof(struct tcphdr);
2741         } else {
2742                 wqes[1] = (struct kwqe *) l4kwqe3;
2743                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
2744                                sizeof(struct tcphdr);
2745         }
2746
2747         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
2748         l4kwqe1->flags =
2749                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
2750                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
2751         l4kwqe1->cid = csk->cid;
2752         l4kwqe1->pg_cid = csk->pg_cid;
2753         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
2754         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
2755         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
2756         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
2757         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
2758                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
2759         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
2760                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
2761         if (csk->tcp_flags & SK_TCP_NAGLE)
2762                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
2763         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
2764                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
2765         if (csk->tcp_flags & SK_TCP_SACK)
2766                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
2767         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
2768                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
2769
2770         l4kwqe1->tcp_flags = tcp_flags;
2771
2772         return dev->submit_kwqes(dev, wqes, num_wqes);
2773 }
2774
2775 static int cnic_cm_close_req(struct cnic_sock *csk)
2776 {
2777         struct cnic_dev *dev = csk->dev;
2778         struct l4_kwq_close_req *l4kwqe;
2779         struct kwqe *wqes[1];
2780
2781         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
2782         memset(l4kwqe, 0, sizeof(*l4kwqe));
2783         wqes[0] = (struct kwqe *) l4kwqe;
2784
2785         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
2786         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
2787         l4kwqe->cid = csk->cid;
2788
2789         return dev->submit_kwqes(dev, wqes, 1);
2790 }
2791
2792 static int cnic_cm_abort_req(struct cnic_sock *csk)
2793 {
2794         struct cnic_dev *dev = csk->dev;
2795         struct l4_kwq_reset_req *l4kwqe;
2796         struct kwqe *wqes[1];
2797
2798         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
2799         memset(l4kwqe, 0, sizeof(*l4kwqe));
2800         wqes[0] = (struct kwqe *) l4kwqe;
2801
2802         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
2803         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
2804         l4kwqe->cid = csk->cid;
2805
2806         return dev->submit_kwqes(dev, wqes, 1);
2807 }
2808
2809 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
2810                           u32 l5_cid, struct cnic_sock **csk, void *context)
2811 {
2812         struct cnic_local *cp = dev->cnic_priv;
2813         struct cnic_sock *csk1;
2814
2815         if (l5_cid >= MAX_CM_SK_TBL_SZ)
2816                 return -EINVAL;
2817
2818         if (cp->ctx_tbl) {
2819                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2820
2821                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2822                         return -EAGAIN;
2823         }
2824
2825         csk1 = &cp->csk_tbl[l5_cid];
2826         if (atomic_read(&csk1->ref_count))
2827                 return -EAGAIN;
2828
2829         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
2830                 return -EBUSY;
2831
2832         csk1->dev = dev;
2833         csk1->cid = cid;
2834         csk1->l5_cid = l5_cid;
2835         csk1->ulp_type = ulp_type;
2836         csk1->context = context;
2837
2838         csk1->ka_timeout = DEF_KA_TIMEOUT;
2839         csk1->ka_interval = DEF_KA_INTERVAL;
2840         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
2841         csk1->tos = DEF_TOS;
2842         csk1->ttl = DEF_TTL;
2843         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
2844         csk1->rcv_buf = DEF_RCV_BUF;
2845         csk1->snd_buf = DEF_SND_BUF;
2846         csk1->seed = DEF_SEED;
2847
2848         *csk = csk1;
2849         return 0;
2850 }
2851
2852 static void cnic_cm_cleanup(struct cnic_sock *csk)
2853 {
2854         if (csk->src_port) {
2855                 struct cnic_dev *dev = csk->dev;
2856                 struct cnic_local *cp = dev->cnic_priv;
2857
2858                 cnic_free_id(&cp->csk_port_tbl, csk->src_port);
2859                 csk->src_port = 0;
2860         }
2861 }
2862
2863 static void cnic_close_conn(struct cnic_sock *csk)
2864 {
2865         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
2866                 cnic_cm_upload_pg(csk);
2867                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
2868         }
2869         cnic_cm_cleanup(csk);
2870 }
2871
2872 static int cnic_cm_destroy(struct cnic_sock *csk)
2873 {
2874         if (!cnic_in_use(csk))
2875                 return -EINVAL;
2876
2877         csk_hold(csk);
2878         clear_bit(SK_F_INUSE, &csk->flags);
2879         smp_mb__after_clear_bit();
2880         while (atomic_read(&csk->ref_count) != 1)
2881                 msleep(1);
2882         cnic_cm_cleanup(csk);
2883
2884         csk->flags = 0;
2885         csk_put(csk);
2886         return 0;
2887 }
2888
2889 static inline u16 cnic_get_vlan(struct net_device *dev,
2890                                 struct net_device **vlan_dev)
2891 {
2892         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2893                 *vlan_dev = vlan_dev_real_dev(dev);
2894                 return vlan_dev_vlan_id(dev);
2895         }
2896         *vlan_dev = dev;
2897         return 0;
2898 }
2899
2900 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
2901                              struct dst_entry **dst)
2902 {
2903 #if defined(CONFIG_INET)
2904         struct flowi fl;
2905         int err;
2906         struct rtable *rt;
2907
2908         memset(&fl, 0, sizeof(fl));
2909         fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
2910
2911         err = ip_route_output_key(&init_net, &rt, &fl);
2912         if (!err)
2913                 *dst = &rt->dst;
2914         return err;
2915 #else
2916         return -ENETUNREACH;
2917 #endif
2918 }
2919
2920 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
2921                              struct dst_entry **dst)
2922 {
2923 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2924         struct flowi fl;
2925
2926         memset(&fl, 0, sizeof(fl));
2927         ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
2928         if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
2929                 fl.oif = dst_addr->sin6_scope_id;
2930
2931         *dst = ip6_route_output(&init_net, NULL, &fl);
2932         if (*dst)
2933                 return 0;
2934 #endif
2935
2936         return -ENETUNREACH;
2937 }
2938
2939 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
2940                                            int ulp_type)
2941 {
2942         struct cnic_dev *dev = NULL;
2943         struct dst_entry *dst;
2944         struct net_device *netdev = NULL;
2945         int err = -ENETUNREACH;
2946
2947         if (dst_addr->sin_family == AF_INET)
2948                 err = cnic_get_v4_route(dst_addr, &dst);
2949         else if (dst_addr->sin_family == AF_INET6) {
2950                 struct sockaddr_in6 *dst_addr6 =
2951                         (struct sockaddr_in6 *) dst_addr;
2952
2953                 err = cnic_get_v6_route(dst_addr6, &dst);
2954         } else
2955                 return NULL;
2956
2957         if (err)
2958                 return NULL;
2959
2960         if (!dst->dev)
2961                 goto done;
2962
2963         cnic_get_vlan(dst->dev, &netdev);
2964
2965         dev = cnic_from_netdev(netdev);
2966
2967 done:
2968         dst_release(dst);
2969         if (dev)
2970                 cnic_put(dev);
2971         return dev;
2972 }
2973
2974 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2975 {
2976         struct cnic_dev *dev = csk->dev;
2977         struct cnic_local *cp = dev->cnic_priv;
2978
2979         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
2980 }
2981
2982 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2983 {
2984         struct cnic_dev *dev = csk->dev;
2985         struct cnic_local *cp = dev->cnic_priv;
2986         int is_v6, rc = 0;
2987         struct dst_entry *dst = NULL;
2988         struct net_device *realdev;
2989         u32 local_port;
2990
2991         if (saddr->local.v6.sin6_family == AF_INET6 &&
2992             saddr->remote.v6.sin6_family == AF_INET6)
2993                 is_v6 = 1;
2994         else if (saddr->local.v4.sin_family == AF_INET &&
2995                  saddr->remote.v4.sin_family == AF_INET)
2996                 is_v6 = 0;
2997         else
2998                 return -EINVAL;
2999
3000         clear_bit(SK_F_IPV6, &csk->flags);
3001
3002         if (is_v6) {
3003                 set_bit(SK_F_IPV6, &csk->flags);
3004                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3005
3006                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3007                        sizeof(struct in6_addr));
3008                 csk->dst_port = saddr->remote.v6.sin6_port;
3009                 local_port = saddr->local.v6.sin6_port;
3010
3011         } else {
3012                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3013
3014                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3015                 csk->dst_port = saddr->remote.v4.sin_port;
3016                 local_port = saddr->local.v4.sin_port;
3017         }
3018
3019         csk->vlan_id = 0;
3020         csk->mtu = dev->netdev->mtu;
3021         if (dst && dst->dev) {
3022                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3023                 if (realdev == dev->netdev) {
3024                         csk->vlan_id = vlan;
3025                         csk->mtu = dst_mtu(dst);
3026                 }
3027         }
3028
3029         if (local_port >= CNIC_LOCAL_PORT_MIN &&
3030             local_port < CNIC_LOCAL_PORT_MAX) {
3031                 if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
3032                         local_port = 0;
3033         } else
3034                 local_port = 0;
3035
3036         if (!local_port) {
3037                 local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
3038                 if (local_port == -1) {
3039                         rc = -ENOMEM;
3040                         goto err_out;
3041                 }
3042         }
3043         csk->src_port = local_port;
3044
3045 err_out:
3046         dst_release(dst);
3047         return rc;
3048 }
3049
3050 static void cnic_init_csk_state(struct cnic_sock *csk)
3051 {
3052         csk->state = 0;
3053         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3054         clear_bit(SK_F_CLOSING, &csk->flags);
3055 }
3056
3057 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3058 {
3059         int err = 0;
3060
3061         if (!cnic_in_use(csk))
3062                 return -EINVAL;
3063
3064         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3065                 return -EINVAL;
3066
3067         cnic_init_csk_state(csk);
3068
3069         err = cnic_get_route(csk, saddr);
3070         if (err)
3071                 goto err_out;
3072
3073         err = cnic_resolve_addr(csk, saddr);
3074         if (!err)
3075                 return 0;
3076
3077 err_out:
3078         clear_bit(SK_F_CONNECT_START, &csk->flags);
3079         return err;
3080 }
3081
3082 static int cnic_cm_abort(struct cnic_sock *csk)
3083 {
3084         struct cnic_local *cp = csk->dev->cnic_priv;
3085         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3086
3087         if (!cnic_in_use(csk))
3088                 return -EINVAL;
3089
3090         if (cnic_abort_prep(csk))
3091                 return cnic_cm_abort_req(csk);
3092
3093         /* Getting here means that we haven't started connect, or
3094          * connect was not successful.
3095          */
3096
3097         cp->close_conn(csk, opcode);
3098         if (csk->state != opcode)
3099                 return -EALREADY;
3100
3101         return 0;
3102 }
3103
3104 static int cnic_cm_close(struct cnic_sock *csk)
3105 {
3106         if (!cnic_in_use(csk))
3107                 return -EINVAL;
3108
3109         if (cnic_close_prep(csk)) {
3110                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3111                 return cnic_cm_close_req(csk);
3112         } else {
3113                 return -EALREADY;
3114         }
3115         return 0;
3116 }
3117
3118 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3119                            u8 opcode)
3120 {
3121         struct cnic_ulp_ops *ulp_ops;
3122         int ulp_type = csk->ulp_type;
3123
3124         rcu_read_lock();
3125         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3126         if (ulp_ops) {
3127                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3128                         ulp_ops->cm_connect_complete(csk);
3129                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3130                         ulp_ops->cm_close_complete(csk);
3131                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3132                         ulp_ops->cm_remote_abort(csk);
3133                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3134                         ulp_ops->cm_abort_complete(csk);
3135                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3136                         ulp_ops->cm_remote_close(csk);
3137         }
3138         rcu_read_unlock();
3139 }
3140
3141 static int cnic_cm_set_pg(struct cnic_sock *csk)
3142 {
3143         if (cnic_offld_prep(csk)) {
3144                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3145                         cnic_cm_update_pg(csk);
3146                 else
3147                         cnic_cm_offload_pg(csk);
3148         }
3149         return 0;
3150 }
3151
3152 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3153 {
3154         struct cnic_local *cp = dev->cnic_priv;
3155         u32 l5_cid = kcqe->pg_host_opaque;
3156         u8 opcode = kcqe->op_code;
3157         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3158
3159         csk_hold(csk);
3160         if (!cnic_in_use(csk))
3161                 goto done;
3162
3163         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3164                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3165                 goto done;
3166         }
3167         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3168         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3169                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3170                 cnic_cm_upcall(cp, csk,
3171                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3172                 goto done;
3173         }
3174
3175         csk->pg_cid = kcqe->pg_cid;
3176         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3177         cnic_cm_conn_req(csk);
3178
3179 done:
3180         csk_put(csk);
3181 }
3182
3183 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3184 {
3185         struct cnic_local *cp = dev->cnic_priv;
3186         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3187         u8 opcode = l4kcqe->op_code;
3188         u32 l5_cid;
3189         struct cnic_sock *csk;
3190
3191         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3192             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3193                 cnic_cm_process_offld_pg(dev, l4kcqe);
3194                 return;
3195         }
3196
3197         l5_cid = l4kcqe->conn_id;
3198         if (opcode & 0x80)
3199                 l5_cid = l4kcqe->cid;
3200         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3201                 return;
3202
3203         csk = &cp->csk_tbl[l5_cid];
3204         csk_hold(csk);
3205
3206         if (!cnic_in_use(csk)) {
3207                 csk_put(csk);
3208                 return;
3209         }
3210
3211         switch (opcode) {
3212         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3213                 if (l4kcqe->status != 0) {
3214                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3215                         cnic_cm_upcall(cp, csk,
3216                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3217                 }
3218                 break;
3219         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3220                 if (l4kcqe->status == 0)
3221                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3222
3223                 smp_mb__before_clear_bit();
3224                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3225                 cnic_cm_upcall(cp, csk, opcode);
3226                 break;
3227
3228         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3229         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3230         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3231         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3232         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3233                 cp->close_conn(csk, opcode);
3234                 break;
3235
3236         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3237                 cnic_cm_upcall(cp, csk, opcode);
3238                 break;
3239         }
3240         csk_put(csk);
3241 }
3242
3243 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3244 {
3245         struct cnic_dev *dev = data;
3246         int i;
3247
3248         for (i = 0; i < num; i++)
3249                 cnic_cm_process_kcqe(dev, kcqe[i]);
3250 }
3251
3252 static struct cnic_ulp_ops cm_ulp_ops = {
3253         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3254 };
3255
3256 static void cnic_cm_free_mem(struct cnic_dev *dev)
3257 {
3258         struct cnic_local *cp = dev->cnic_priv;
3259
3260         kfree(cp->csk_tbl);
3261         cp->csk_tbl = NULL;
3262         cnic_free_id_tbl(&cp->csk_port_tbl);
3263 }
3264
3265 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3266 {
3267         struct cnic_local *cp = dev->cnic_priv;
3268
3269         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3270                               GFP_KERNEL);
3271         if (!cp->csk_tbl)
3272                 return -ENOMEM;
3273
3274         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3275                              CNIC_LOCAL_PORT_MIN)) {
3276                 cnic_cm_free_mem(dev);
3277                 return -ENOMEM;
3278         }
3279         return 0;
3280 }
3281
3282 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3283 {
3284         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
3285                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
3286                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
3287                 csk->state = opcode;
3288         }
3289
3290         /* 1. If event opcode matches the expected event in csk->state
3291          * 2. If the expected event is CLOSE_COMP, we accept any event
3292          * 3. If the expected event is 0, meaning the connection was never
3293          *    never established, we accept the opcode from cm_abort.
3294          */
3295         if (opcode == csk->state || csk->state == 0 ||
3296             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) {
3297                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
3298                         if (csk->state == 0)
3299                                 csk->state = opcode;
3300                         return 1;
3301                 }
3302         }
3303         return 0;
3304 }
3305
3306 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3307 {
3308         struct cnic_dev *dev = csk->dev;
3309         struct cnic_local *cp = dev->cnic_priv;
3310
3311         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
3312                 cnic_cm_upcall(cp, csk, opcode);
3313                 return;
3314         }
3315
3316         clear_bit(SK_F_CONNECT_START, &csk->flags);
3317         cnic_close_conn(csk);
3318         csk->state = opcode;
3319         cnic_cm_upcall(cp, csk, opcode);
3320 }
3321
3322 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3323 {
3324 }
3325
3326 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3327 {
3328         u32 seed;
3329
3330         get_random_bytes(&seed, 4);
3331         cnic_ctx_wr(dev, 45, 0, seed);
3332         return 0;
3333 }
3334
3335 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3336 {
3337         struct cnic_dev *dev = csk->dev;
3338         struct cnic_local *cp = dev->cnic_priv;
3339         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3340         union l5cm_specific_data l5_data;
3341         u32 cmd = 0;
3342         int close_complete = 0;
3343
3344         switch (opcode) {
3345         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3346         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3347         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3348                 if (cnic_ready_to_close(csk, opcode)) {
3349                         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3350                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3351                         else
3352                                 close_complete = 1;
3353                 }
3354                 break;
3355         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3356                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3357                 break;
3358         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3359                 close_complete = 1;
3360                 break;
3361         }
3362         if (cmd) {
3363                 memset(&l5_data, 0, sizeof(l5_data));
3364
3365                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3366                                     &l5_data);
3367         } else if (close_complete) {
3368                 ctx->timestamp = jiffies;
3369                 cnic_close_conn(csk);
3370                 cnic_cm_upcall(cp, csk, csk->state);
3371         }
3372 }
3373
3374 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3375 {
3376         struct cnic_local *cp = dev->cnic_priv;
3377         int i;
3378
3379         if (!cp->ctx_tbl)
3380                 return;
3381
3382         if (!netif_running(dev->netdev))
3383                 return;
3384
3385         for (i = 0; i < cp->max_cid_space; i++) {
3386                 struct cnic_context *ctx = &cp->ctx_tbl[i];
3387
3388                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3389                         msleep(10);
3390
3391                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3392                         netdev_warn(dev->netdev, "CID %x not deleted\n",
3393                                    ctx->cid);
3394         }
3395
3396         cancel_delayed_work(&cp->delete_task);
3397         flush_workqueue(cnic_wq);
3398
3399         if (atomic_read(&cp->iscsi_conn) != 0)
3400                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
3401                             atomic_read(&cp->iscsi_conn));
3402 }
3403
3404 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3405 {
3406         struct cnic_local *cp = dev->cnic_priv;
3407         u32 pfid = cp->pfid;
3408         u32 port = CNIC_PORT(cp);
3409
3410         cnic_init_bnx2x_mac(dev);
3411         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3412
3413         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3414                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
3415
3416         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3417                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
3418         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3419                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
3420                 DEF_MAX_DA_COUNT);
3421
3422         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3423                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
3424         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3425                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
3426         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3427                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
3428         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3429                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
3430
3431         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
3432                 DEF_MAX_CWND);
3433         return 0;
3434 }
3435
3436 static void cnic_delete_task(struct work_struct *work)
3437 {
3438         struct cnic_local *cp;
3439         struct cnic_dev *dev;
3440         u32 i;
3441         int need_resched = 0;
3442
3443         cp = container_of(work, struct cnic_local, delete_task.work);
3444         dev = cp->dev;
3445
3446         for (i = 0; i < cp->max_cid_space; i++) {
3447                 struct cnic_context *ctx = &cp->ctx_tbl[i];
3448
3449                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
3450                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3451                         continue;
3452
3453                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
3454                         need_resched = 1;
3455                         continue;
3456                 }
3457
3458                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3459                         continue;
3460
3461                 cnic_bnx2x_destroy_ramrod(dev, i);
3462
3463                 cnic_free_bnx2x_conn_resc(dev, i);
3464                 if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
3465                         atomic_dec(&cp->iscsi_conn);
3466
3467                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
3468         }
3469
3470         if (need_resched)
3471                 queue_delayed_work(cnic_wq, &cp->delete_task,
3472                                    msecs_to_jiffies(10));
3473
3474 }
3475
3476 static int cnic_cm_open(struct cnic_dev *dev)
3477 {
3478         struct cnic_local *cp = dev->cnic_priv;
3479         int err;
3480
3481         err = cnic_cm_alloc_mem(dev);
3482         if (err)
3483                 return err;
3484
3485         err = cp->start_cm(dev);
3486
3487         if (err)
3488                 goto err_out;
3489
3490         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
3491
3492         dev->cm_create = cnic_cm_create;
3493         dev->cm_destroy = cnic_cm_destroy;
3494         dev->cm_connect = cnic_cm_connect;
3495         dev->cm_abort = cnic_cm_abort;
3496         dev->cm_close = cnic_cm_close;
3497         dev->cm_select_dev = cnic_cm_select_dev;
3498
3499         cp->ulp_handle[CNIC_ULP_L4] = dev;
3500         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
3501         return 0;
3502
3503 err_out:
3504         cnic_cm_free_mem(dev);
3505         return err;
3506 }
3507
3508 static int cnic_cm_shutdown(struct cnic_dev *dev)
3509 {
3510         struct cnic_local *cp = dev->cnic_priv;
3511         int i;
3512
3513         cp->stop_cm(dev);
3514
3515         if (!cp->csk_tbl)
3516                 return 0;
3517
3518         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
3519                 struct cnic_sock *csk = &cp->csk_tbl[i];
3520
3521                 clear_bit(SK_F_INUSE, &csk->flags);
3522                 cnic_cm_cleanup(csk);
3523         }
3524         cnic_cm_free_mem(dev);
3525
3526         return 0;
3527 }
3528
3529 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
3530 {
3531         u32 cid_addr;
3532         int i;
3533
3534         cid_addr = GET_CID_ADDR(cid);
3535
3536         for (i = 0; i < CTX_SIZE; i += 4)
3537                 cnic_ctx_wr(dev, cid_addr, i, 0);
3538 }
3539
3540 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
3541 {
3542         struct cnic_local *cp = dev->cnic_priv;
3543         int ret = 0, i;
3544         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
3545
3546         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3547                 return 0;
3548
3549         for (i = 0; i < cp->ctx_blks; i++) {
3550                 int j;
3551                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
3552                 u32 val;
3553
3554                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
3555
3556                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
3557                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
3558                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
3559                         (u64) cp->ctx_arr[i].mapping >> 32);
3560                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
3561                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
3562                 for (j = 0; j < 10; j++) {
3563
3564                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
3565                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
3566                                 break;
3567                         udelay(5);
3568                 }
3569                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
3570                         ret = -EBUSY;
3571                         break;
3572                 }
3573         }
3574         return ret;
3575 }
3576
3577 static void cnic_free_irq(struct cnic_dev *dev)
3578 {
3579         struct cnic_local *cp = dev->cnic_priv;
3580         struct cnic_eth_dev *ethdev = cp->ethdev;
3581
3582         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3583                 cp->disable_int_sync(dev);
3584                 tasklet_kill(&cp->cnic_irq_task);
3585                 free_irq(ethdev->irq_arr[0].vector, dev);
3586         }
3587 }
3588
3589 static int cnic_request_irq(struct cnic_dev *dev)
3590 {
3591         struct cnic_local *cp = dev->cnic_priv;
3592         struct cnic_eth_dev *ethdev = cp->ethdev;
3593         int err;
3594
3595         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
3596         if (err)
3597                 tasklet_disable(&cp->cnic_irq_task);
3598
3599         return err;
3600 }
3601
3602 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
3603 {
3604         struct cnic_local *cp = dev->cnic_priv;
3605         struct cnic_eth_dev *ethdev = cp->ethdev;
3606
3607         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3608                 int err, i = 0;
3609                 int sblk_num = cp->status_blk_num;
3610                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
3611                            BNX2_HC_SB_CONFIG_1;
3612
3613                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
3614
3615                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
3616                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
3617                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
3618
3619                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
3620                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
3621                              (unsigned long) dev);
3622                 err = cnic_request_irq(dev);
3623                 if (err)
3624                         return err;
3625
3626                 while (cp->status_blk.bnx2->status_completion_producer_index &&
3627                        i < 10) {
3628                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
3629                                 1 << (11 + sblk_num));
3630                         udelay(10);
3631                         i++;
3632                         barrier();
3633                 }
3634                 if (cp->status_blk.bnx2->status_completion_producer_index) {
3635                         cnic_free_irq(dev);
3636                         goto failed;
3637                 }
3638
3639         } else {
3640                 struct status_block *sblk = cp->status_blk.gen;
3641                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
3642                 int i = 0;
3643
3644                 while (sblk->status_completion_producer_index && i < 10) {
3645                         CNIC_WR(dev, BNX2_HC_COMMAND,
3646                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
3647                         udelay(10);
3648                         i++;
3649                         barrier();
3650                 }
3651                 if (sblk->status_completion_producer_index)
3652                         goto failed;
3653
3654         }
3655         return 0;
3656
3657 failed:
3658         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
3659         return -EBUSY;
3660 }
3661
3662 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
3663 {
3664         struct cnic_local *cp = dev->cnic_priv;
3665         struct cnic_eth_dev *ethdev = cp->ethdev;
3666
3667         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3668                 return;
3669
3670         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3671                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3672 }
3673
3674 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
3675 {
3676         struct cnic_local *cp = dev->cnic_priv;
3677         struct cnic_eth_dev *ethdev = cp->ethdev;
3678
3679         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3680                 return;
3681
3682         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3683                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
3684         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
3685         synchronize_irq(ethdev->irq_arr[0].vector);
3686 }
3687
3688 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
3689 {
3690         struct cnic_local *cp = dev->cnic_priv;
3691         struct cnic_eth_dev *ethdev = cp->ethdev;
3692         struct cnic_uio_dev *udev = cp->udev;
3693         u32 cid_addr, tx_cid, sb_id;
3694         u32 val, offset0, offset1, offset2, offset3;
3695         int i;
3696         struct tx_bd *txbd;
3697         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
3698         struct status_block *s_blk = cp->status_blk.gen;
3699
3700         sb_id = cp->status_blk_num;
3701         tx_cid = 20;
3702         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
3703         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3704                 struct status_block_msix *sblk = cp->status_blk.bnx2;
3705
3706                 tx_cid = TX_TSS_CID + sb_id - 1;
3707                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
3708                         (TX_TSS_CID << 7));
3709                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
3710         }
3711         cp->tx_cons = *cp->tx_cons_ptr;
3712
3713         cid_addr = GET_CID_ADDR(tx_cid);
3714         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
3715                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
3716
3717                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
3718                         cnic_ctx_wr(dev, cid_addr2, i, 0);
3719
3720                 offset0 = BNX2_L2CTX_TYPE_XI;
3721                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
3722                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
3723                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
3724         } else {
3725                 cnic_init_context(dev, tx_cid);
3726                 cnic_init_context(dev, tx_cid + 1);
3727
3728                 offset0 = BNX2_L2CTX_TYPE;
3729                 offset1 = BNX2_L2CTX_CMD_TYPE;
3730                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
3731                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
3732         }
3733         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
3734         cnic_ctx_wr(dev, cid_addr, offset0, val);
3735
3736         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
3737         cnic_ctx_wr(dev, cid_addr, offset1, val);
3738
3739         txbd = (struct tx_bd *) udev->l2_ring;
3740
3741         buf_map = udev->l2_buf_map;
3742         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
3743                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
3744                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3745         }
3746         val = (u64) ring_map >> 32;
3747         cnic_ctx_wr(dev, cid_addr, offset2, val);
3748         txbd->tx_bd_haddr_hi = val;
3749
3750         val = (u64) ring_map & 0xffffffff;
3751         cnic_ctx_wr(dev, cid_addr, offset3, val);
3752         txbd->tx_bd_haddr_lo = val;
3753 }
3754
3755 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
3756 {
3757         struct cnic_local *cp = dev->cnic_priv;
3758         struct cnic_eth_dev *ethdev = cp->ethdev;
3759         struct cnic_uio_dev *udev = cp->udev;
3760         u32 cid_addr, sb_id, val, coal_reg, coal_val;
3761         int i;
3762         struct rx_bd *rxbd;
3763         struct status_block *s_blk = cp->status_blk.gen;
3764         dma_addr_t ring_map = udev->l2_ring_map;
3765
3766         sb_id = cp->status_blk_num;
3767         cnic_init_context(dev, 2);
3768         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
3769         coal_reg = BNX2_HC_COMMAND;
3770         coal_val = CNIC_RD(dev, coal_reg);
3771         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3772                 struct status_block_msix *sblk = cp->status_blk.bnx2;
3773
3774                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
3775                 coal_reg = BNX2_HC_COALESCE_NOW;
3776                 coal_val = 1 << (11 + sb_id);
3777         }
3778         i = 0;
3779         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
3780                 CNIC_WR(dev, coal_reg, coal_val);
3781                 udelay(10);
3782                 i++;
3783                 barrier();
3784         }
3785         cp->rx_cons = *cp->rx_cons_ptr;
3786
3787         cid_addr = GET_CID_ADDR(2);
3788         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
3789               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
3790         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
3791
3792         if (sb_id == 0)
3793                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
3794         else
3795                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
3796         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
3797
3798         rxbd = (struct rx_bd *) (udev->l2_ring + BCM_PAGE_SIZE);
3799         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
3800                 dma_addr_t buf_map;
3801                 int n = (i % cp->l2_rx_ring_size) + 1;
3802
3803                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
3804                 rxbd->rx_bd_len = cp->l2_single_buf_size;
3805                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
3806                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
3807                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3808         }
3809         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
3810         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
3811         rxbd->rx_bd_haddr_hi = val;
3812
3813         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3814         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
3815         rxbd->rx_bd_haddr_lo = val;
3816
3817         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
3818         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
3819 }
3820
3821 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
3822 {
3823         struct kwqe *wqes[1], l2kwqe;
3824
3825         memset(&l2kwqe, 0, sizeof(l2kwqe));
3826         wqes[0] = &l2kwqe;
3827         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) |
3828                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
3829                                KWQE_OPCODE_SHIFT) | 2;
3830         dev->submit_kwqes(dev, wqes, 1);
3831 }
3832
3833 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
3834 {
3835         struct cnic_local *cp = dev->cnic_priv;
3836         u32 val;
3837
3838         val = cp->func << 2;
3839
3840         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
3841
3842         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3843                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
3844         dev->mac_addr[0] = (u8) (val >> 8);
3845         dev->mac_addr[1] = (u8) val;
3846
3847         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
3848
3849         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3850                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
3851         dev->mac_addr[2] = (u8) (val >> 24);
3852         dev->mac_addr[3] = (u8) (val >> 16);
3853         dev->mac_addr[4] = (u8) (val >> 8);
3854         dev->mac_addr[5] = (u8) val;
3855
3856         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
3857
3858         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
3859         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3860                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
3861
3862         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
3863         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
3864         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
3865 }
3866
3867 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
3868 {
3869         struct cnic_local *cp = dev->cnic_priv;
3870         struct cnic_eth_dev *ethdev = cp->ethdev;
3871         struct status_block *sblk = cp->status_blk.gen;
3872         u32 val, kcq_cid_addr, kwq_cid_addr;
3873         int err;
3874
3875         cnic_set_bnx2_mac(dev);
3876
3877         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
3878         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
3879         if (BCM_PAGE_BITS > 12)
3880                 val |= (12 - 8)  << 4;
3881         else
3882                 val |= (BCM_PAGE_BITS - 8)  << 4;
3883
3884         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
3885
3886         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
3887         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
3888         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
3889
3890         err = cnic_setup_5709_context(dev, 1);
3891         if (err)
3892                 return err;
3893
3894         cnic_init_context(dev, KWQ_CID);
3895         cnic_init_context(dev, KCQ_CID);
3896
3897         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
3898         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
3899
3900         cp->max_kwq_idx = MAX_KWQ_IDX;
3901         cp->kwq_prod_idx = 0;
3902         cp->kwq_con_idx = 0;
3903         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
3904
3905         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
3906                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
3907         else
3908                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
3909
3910         /* Initialize the kernel work queue context. */
3911         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3912               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3913         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
3914
3915         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
3916         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3917
3918         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
3919         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3920
3921         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
3922         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3923
3924         val = (u32) cp->kwq_info.pgtbl_map;
3925         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3926
3927         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
3928         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
3929
3930         cp->kcq1.sw_prod_idx = 0;
3931         cp->kcq1.hw_prod_idx_ptr =
3932                 (u16 *) &sblk->status_completion_producer_index;
3933
3934         cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
3935
3936         /* Initialize the kernel complete queue context. */
3937         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3938               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3939         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
3940
3941         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
3942         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3943
3944         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
3945         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3946
3947         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
3948         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3949
3950         val = (u32) cp->kcq1.dma.pgtbl_map;
3951         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3952
3953         cp->int_num = 0;
3954         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3955                 struct status_block_msix *msblk = cp->status_blk.bnx2;
3956                 u32 sb_id = cp->status_blk_num;
3957                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
3958
3959                 cp->kcq1.hw_prod_idx_ptr =
3960                         (u16 *) &msblk->status_completion_producer_index;
3961                 cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
3962                 cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
3963                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
3964                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3965                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3966         }
3967
3968         /* Enable Commnad Scheduler notification when we write to the
3969          * host producer index of the kernel contexts. */
3970         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
3971
3972         /* Enable Command Scheduler notification when we write to either
3973          * the Send Queue or Receive Queue producer indexes of the kernel
3974          * bypass contexts. */
3975         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
3976         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
3977
3978         /* Notify COM when the driver post an application buffer. */
3979         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
3980
3981         /* Set the CP and COM doorbells.  These two processors polls the
3982          * doorbell for a non zero value before running.  This must be done
3983          * after setting up the kernel queue contexts. */
3984         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
3985         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
3986
3987         cnic_init_bnx2_tx_ring(dev);
3988         cnic_init_bnx2_rx_ring(dev);
3989
3990         err = cnic_init_bnx2_irq(dev);
3991         if (err) {
3992                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
3993                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
3994                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
3995                 return err;
3996         }
3997
3998         return 0;
3999 }
4000
4001 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4002 {
4003         struct cnic_local *cp = dev->cnic_priv;
4004         struct cnic_eth_dev *ethdev = cp->ethdev;
4005         u32 start_offset = ethdev->ctx_tbl_offset;
4006         int i;
4007
4008         for (i = 0; i < cp->ctx_blks; i++) {
4009                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4010                 dma_addr_t map = ctx->mapping;
4011
4012                 if (cp->ctx_align) {
4013                         unsigned long mask = cp->ctx_align - 1;
4014
4015                         map = (map + mask) & ~mask;
4016                 }
4017
4018                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4019         }
4020 }
4021
4022 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4023 {
4024         struct cnic_local *cp = dev->cnic_priv;
4025         struct cnic_eth_dev *ethdev = cp->ethdev;
4026         int err = 0;
4027
4028         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4029                      (unsigned long) dev);
4030         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4031                 err = cnic_request_irq(dev);
4032
4033         return err;
4034 }
4035
4036 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4037                                                 u16 sb_id, u8 sb_index,
4038                                                 u8 disable)
4039 {
4040
4041         u32 addr = BAR_CSTRORM_INTMEM +
4042                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4043                         offsetof(struct hc_status_block_data_e1x, index_data) +
4044                         sizeof(struct hc_index_data)*sb_index +
4045                         offsetof(struct hc_index_data, flags);
4046         u16 flags = CNIC_RD16(dev, addr);
4047         /* clear and set */
4048         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4049         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4050                   HC_INDEX_DATA_HC_ENABLED);
4051         CNIC_WR16(dev, addr, flags);
4052 }
4053
4054 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4055 {
4056         struct cnic_local *cp = dev->cnic_priv;
4057         u8 sb_id = cp->status_blk_num;
4058
4059         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4060                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4061                         offsetof(struct hc_status_block_data_e1x, index_data) +
4062                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4063                         offsetof(struct hc_index_data, timeout), 64 / 12);
4064         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4065 }
4066
4067 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4068 {
4069 }
4070
4071 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4072                                     struct client_init_ramrod_data *data)
4073 {
4074         struct cnic_local *cp = dev->cnic_priv;
4075         struct cnic_uio_dev *udev = cp->udev;
4076         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4077         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4078         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4079         int port = CNIC_PORT(cp);
4080         int i;
4081         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4082         u32 val;
4083
4084         memset(txbd, 0, BCM_PAGE_SIZE);
4085
4086         buf_map = udev->l2_buf_map;
4087         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4088                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4089                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4090
4091                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4092                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4093                 reg_bd->addr_hi = start_bd->addr_hi;
4094                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4095                 start_bd->nbytes = cpu_to_le16(0x10);
4096                 start_bd->nbd = cpu_to_le16(3);
4097                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4098                 start_bd->general_data = (UNICAST_ADDRESS <<
4099                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
4100                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4101
4102         }
4103
4104         val = (u64) ring_map >> 32;
4105         txbd->next_bd.addr_hi = cpu_to_le32(val);
4106
4107         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4108
4109         val = (u64) ring_map & 0xffffffff;
4110         txbd->next_bd.addr_lo = cpu_to_le32(val);
4111
4112         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4113
4114         /* Other ramrod params */
4115         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4116         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4117
4118         /* reset xstorm per client statistics */
4119         if (cli < MAX_STAT_COUNTER_ID) {
4120                 val = BAR_XSTRORM_INTMEM +
4121                       XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4122                 for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
4123                         CNIC_WR(dev, val + i * 4, 0);
4124         }
4125
4126         cp->tx_cons_ptr =
4127                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4128 }
4129
4130 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4131                                     struct client_init_ramrod_data *data)
4132 {
4133         struct cnic_local *cp = dev->cnic_priv;
4134         struct cnic_uio_dev *udev = cp->udev;
4135         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4136                                 BCM_PAGE_SIZE);
4137         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4138                                 (udev->l2_ring + (2 * BCM_PAGE_SIZE));
4139         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4140         int i;
4141         int port = CNIC_PORT(cp);
4142         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4143         int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4144         u32 val;
4145         dma_addr_t ring_map = udev->l2_ring_map;
4146
4147         /* General data */
4148         data->general.client_id = cli;
4149         data->general.statistics_en_flg = 1;
4150         data->general.statistics_counter_id = cli;
4151         data->general.activate_flg = 1;
4152         data->general.sp_client_id = cli;
4153
4154         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4155                 dma_addr_t buf_map;
4156                 int n = (i % cp->l2_rx_ring_size) + 1;
4157
4158                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4159                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4160                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4161         }
4162
4163         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4164         rxbd->addr_hi = cpu_to_le32(val);
4165         data->rx.bd_page_base.hi = cpu_to_le32(val);
4166
4167         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4168         rxbd->addr_lo = cpu_to_le32(val);
4169         data->rx.bd_page_base.lo = cpu_to_le32(val);
4170
4171         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4172         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4173         rxcqe->addr_hi = cpu_to_le32(val);
4174         data->rx.cqe_page_base.hi = cpu_to_le32(val);
4175
4176         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4177         rxcqe->addr_lo = cpu_to_le32(val);
4178         data->rx.cqe_page_base.lo = cpu_to_le32(val);
4179
4180         /* Other ramrod params */
4181         data->rx.client_qzone_id = cl_qzone_id;
4182         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
4183         data->rx.status_block_id = BNX2X_DEF_SB_ID;
4184
4185         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4186         data->rx.bd_buff_size = cpu_to_le16(cp->l2_single_buf_size);
4187
4188         data->rx.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4189         data->rx.outer_vlan_removal_enable_flg = 1;
4190
4191         /* reset tstorm and ustorm per client statistics */
4192         if (cli < MAX_STAT_COUNTER_ID) {
4193                 val = BAR_TSTRORM_INTMEM +
4194                       TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4195                 for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
4196                         CNIC_WR(dev, val + i * 4, 0);
4197
4198                 val = BAR_USTRORM_INTMEM +
4199                       USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4200                 for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
4201                         CNIC_WR(dev, val + i * 4, 0);
4202         }
4203
4204         cp->rx_cons_ptr =
4205                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4206 }
4207
4208 static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
4209 {
4210         struct cnic_local *cp = dev->cnic_priv;
4211         u32 base, addr, val;
4212         int port = CNIC_PORT(cp);
4213
4214         dev->max_iscsi_conn = 0;
4215         base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
4216         if (base == 0)
4217                 return;
4218
4219         addr = BNX2X_SHMEM_ADDR(base,
4220                 dev_info.port_hw_config[port].iscsi_mac_upper);
4221
4222         val = CNIC_RD(dev, addr);
4223
4224         dev->mac_addr[0] = (u8) (val >> 8);
4225         dev->mac_addr[1] = (u8) val;
4226
4227         addr = BNX2X_SHMEM_ADDR(base,
4228                 dev_info.port_hw_config[port].iscsi_mac_lower);
4229
4230         val = CNIC_RD(dev, addr);
4231
4232         dev->mac_addr[2] = (u8) (val >> 24);
4233         dev->mac_addr[3] = (u8) (val >> 16);
4234         dev->mac_addr[4] = (u8) (val >> 8);
4235         dev->mac_addr[5] = (u8) val;
4236
4237         addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
4238         val = CNIC_RD(dev, addr);
4239
4240         if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
4241                 u16 val16;
4242
4243                 addr = BNX2X_SHMEM_ADDR(base,
4244                                 drv_lic_key[port].max_iscsi_init_conn);
4245                 val16 = CNIC_RD16(dev, addr);
4246
4247                 if (val16)
4248                         val16 ^= 0x1e1e;
4249                 dev->max_iscsi_conn = val16;
4250         }
4251         if (BNX2X_CHIP_IS_E1H(cp->chip_id)) {
4252                 int func = CNIC_FUNC(cp);
4253                 u32 mf_cfg_addr;
4254
4255                 mf_cfg_addr = base + BNX2X_SHMEM_MF_BLK_OFFSET;
4256
4257                 addr = mf_cfg_addr +
4258                         offsetof(struct mf_cfg, func_mf_config[func].e1hov_tag);
4259
4260                 val = CNIC_RD(dev, addr);
4261                 val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
4262                 if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
4263                         addr = mf_cfg_addr +
4264                                 offsetof(struct mf_cfg,
4265                                          func_mf_config[func].config);
4266                         val = CNIC_RD(dev, addr);
4267                         val &= FUNC_MF_CFG_PROTOCOL_MASK;
4268                         if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
4269                                 dev->max_iscsi_conn = 0;
4270                 }
4271         }
4272 }
4273
4274 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4275 {
4276         struct cnic_local *cp = dev->cnic_priv;
4277         struct cnic_eth_dev *ethdev = cp->ethdev;
4278         int func = CNIC_FUNC(cp), ret, i;
4279         u32 pfid;
4280         struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
4281
4282         cp->pfid = func;
4283         pfid = cp->pfid;
4284
4285         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4286                                cp->iscsi_start_cid);
4287
4288         if (ret)
4289                 return -ENOMEM;
4290
4291         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
4292
4293         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4294                           CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4295         cp->kcq1.sw_prod_idx = 0;
4296
4297         cp->kcq1.hw_prod_idx_ptr =
4298                 &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4299         cp->kcq1.status_idx_ptr =
4300                 &sb->sb.running_index[SM_RX_ID];
4301
4302         cnic_get_bnx2x_iscsi_info(dev);
4303
4304         /* Only 1 EQ */
4305         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
4306         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4307                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
4308         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4309                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
4310                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
4311         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4312                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
4313                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
4314         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4315                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
4316                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
4317         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4318                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
4319                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
4320         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4321                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
4322         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4323                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
4324         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4325                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
4326                 HC_INDEX_ISCSI_EQ_CONS);
4327
4328         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4329                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4330                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i),
4331                         cp->conn_buf_info.pgtbl[2 * i]);
4332                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4333                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i) + 4,
4334                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4335         }
4336
4337         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4338                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
4339                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4340         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4341                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
4342                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4343
4344         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4345                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
4346
4347         cnic_setup_bnx2x_context(dev);
4348
4349         ret = cnic_init_bnx2x_irq(dev);
4350         if (ret)
4351                 return ret;
4352
4353         return 0;
4354 }
4355
4356 static void cnic_init_rings(struct cnic_dev *dev)
4357 {
4358         struct cnic_local *cp = dev->cnic_priv;
4359         struct cnic_uio_dev *udev = cp->udev;
4360
4361         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4362                 return;
4363
4364         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4365                 cnic_init_bnx2_tx_ring(dev);
4366                 cnic_init_bnx2_rx_ring(dev);
4367                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4368         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4369                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4370                 u32 cl_qzone_id, type;
4371                 struct client_init_ramrod_data *data;
4372                 union l5cm_specific_data l5_data;
4373                 struct ustorm_eth_rx_producers rx_prods = {0};
4374                 u32 off, i;
4375
4376                 rx_prods.bd_prod = 0;
4377                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4378                 barrier();
4379
4380                 cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4381
4382                 off = BAR_USTRORM_INTMEM +
4383                          USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli);
4384
4385                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4386                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4387
4388                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4389
4390                 data = udev->l2_buf;
4391
4392                 memset(data, 0, sizeof(*data));
4393
4394                 cnic_init_bnx2x_tx_ring(dev, data);
4395                 cnic_init_bnx2x_rx_ring(dev, data);
4396
4397                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
4398                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
4399
4400                 type = (ETH_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
4401                         & SPE_HDR_CONN_TYPE;
4402                 type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
4403                         SPE_HDR_FUNCTION_ID);
4404
4405                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4406
4407                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4408                         BNX2X_ISCSI_L2_CID, type, &l5_data);
4409
4410                 i = 0;
4411                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4412                        ++i < 10)
4413                         msleep(1);
4414
4415                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4416                         netdev_err(dev->netdev,
4417                                 "iSCSI CLIENT_SETUP did not complete\n");
4418                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4419                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
4420         }
4421 }
4422
4423 static void cnic_shutdown_rings(struct cnic_dev *dev)
4424 {
4425         struct cnic_local *cp = dev->cnic_priv;
4426
4427         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4428                 return;
4429
4430         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4431                 cnic_shutdown_bnx2_rx_ring(dev);
4432         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4433                 struct cnic_local *cp = dev->cnic_priv;
4434                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4435                 union l5cm_specific_data l5_data;
4436                 int i;
4437                 u32 type;
4438
4439                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0);
4440
4441                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4442
4443                 l5_data.phy_address.lo = cli;
4444                 l5_data.phy_address.hi = 0;
4445                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4446                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4447                 i = 0;
4448                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4449                        ++i < 10)
4450                         msleep(1);
4451
4452                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4453                         netdev_err(dev->netdev,
4454                                 "iSCSI CLIENT_HALT did not complete\n");
4455                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4456
4457                 memset(&l5_data, 0, sizeof(l5_data));
4458                 type = (NONE_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
4459                         & SPE_HDR_CONN_TYPE;
4460                 type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
4461                          SPE_HDR_FUNCTION_ID);
4462                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
4463                         BNX2X_ISCSI_L2_CID, type, &l5_data);
4464                 msleep(10);
4465         }
4466         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4467 }
4468
4469 static int cnic_register_netdev(struct cnic_dev *dev)
4470 {
4471         struct cnic_local *cp = dev->cnic_priv;
4472         struct cnic_eth_dev *ethdev = cp->ethdev;
4473         int err;
4474
4475         if (!ethdev)
4476                 return -ENODEV;
4477
4478         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
4479                 return 0;
4480
4481         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4482         if (err)
4483                 netdev_err(dev->netdev, "register_cnic failed\n");
4484
4485         return err;
4486 }
4487
4488 static void cnic_unregister_netdev(struct cnic_dev *dev)
4489 {
4490         struct cnic_local *cp = dev->cnic_priv;
4491         struct cnic_eth_dev *ethdev = cp->ethdev;
4492
4493         if (!ethdev)
4494                 return;
4495
4496         ethdev->drv_unregister_cnic(dev->netdev);
4497 }
4498
4499 static int cnic_start_hw(struct cnic_dev *dev)
4500 {
4501         struct cnic_local *cp = dev->cnic_priv;
4502         struct cnic_eth_dev *ethdev = cp->ethdev;
4503         int err;
4504
4505         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
4506                 return -EALREADY;
4507
4508         dev->regview = ethdev->io_base;
4509         cp->chip_id = ethdev->chip_id;
4510         pci_dev_get(dev->pcidev);
4511         cp->func = PCI_FUNC(dev->pcidev->devfn);
4512         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
4513         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
4514
4515         err = cp->alloc_resc(dev);
4516         if (err) {
4517                 netdev_err(dev->netdev, "allocate resource failure\n");
4518                 goto err1;
4519         }
4520
4521         err = cp->start_hw(dev);
4522         if (err)
4523                 goto err1;
4524
4525         err = cnic_cm_open(dev);
4526         if (err)
4527                 goto err1;
4528
4529         set_bit(CNIC_F_CNIC_UP, &dev->flags);
4530
4531         cp->enable_int(dev);
4532
4533         return 0;
4534
4535 err1:
4536         cp->free_resc(dev);
4537         pci_dev_put(dev->pcidev);
4538         return err;
4539 }
4540
4541 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
4542 {
4543         cnic_disable_bnx2_int_sync(dev);
4544
4545         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4546         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4547
4548         cnic_init_context(dev, KWQ_CID);
4549         cnic_init_context(dev, KCQ_CID);
4550
4551         cnic_setup_5709_context(dev, 0);
4552         cnic_free_irq(dev);
4553
4554         cnic_free_resc(dev);
4555 }
4556
4557
4558 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
4559 {
4560         struct cnic_local *cp = dev->cnic_priv;
4561
4562         cnic_free_irq(dev);
4563         *cp->kcq1.hw_prod_idx_ptr = 0;
4564         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4565                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
4566         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
4567         cnic_free_resc(dev);
4568 }
4569
4570 static void cnic_stop_hw(struct cnic_dev *dev)
4571 {
4572         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4573                 struct cnic_local *cp = dev->cnic_priv;
4574                 int i = 0;
4575
4576                 /* Need to wait for the ring shutdown event to complete
4577                  * before clearing the CNIC_UP flag.
4578                  */
4579                 while (cp->udev->uio_dev != -1 && i < 15) {
4580                         msleep(100);
4581                         i++;
4582                 }
4583                 cnic_shutdown_rings(dev);
4584                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
4585                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
4586                 synchronize_rcu();
4587                 cnic_cm_shutdown(dev);
4588                 cp->stop_hw(dev);
4589                 pci_dev_put(dev->pcidev);
4590         }
4591 }
4592
4593 static void cnic_free_dev(struct cnic_dev *dev)
4594 {
4595         int i = 0;
4596
4597         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
4598                 msleep(100);
4599                 i++;
4600         }
4601         if (atomic_read(&dev->ref_count) != 0)
4602                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
4603
4604         netdev_info(dev->netdev, "Removed CNIC device\n");
4605         dev_put(dev->netdev);
4606         kfree(dev);
4607 }
4608
4609 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
4610                                        struct pci_dev *pdev)
4611 {
4612         struct cnic_dev *cdev;
4613         struct cnic_local *cp;
4614         int alloc_size;
4615
4616         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
4617
4618         cdev = kzalloc(alloc_size , GFP_KERNEL);
4619         if (cdev == NULL) {
4620                 netdev_err(dev, "allocate dev struct failure\n");
4621                 return NULL;
4622         }
4623
4624         cdev->netdev = dev;
4625         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
4626         cdev->register_device = cnic_register_device;
4627         cdev->unregister_device = cnic_unregister_device;
4628         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
4629
4630         cp = cdev->cnic_priv;
4631         cp->dev = cdev;
4632         cp->l2_single_buf_size = 0x400;
4633         cp->l2_rx_ring_size = 3;
4634
4635         spin_lock_init(&cp->cnic_ulp_lock);
4636
4637         netdev_info(dev, "Added CNIC device\n");
4638
4639         return cdev;
4640 }
4641
4642 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
4643 {
4644         struct pci_dev *pdev;
4645         struct cnic_dev *cdev;
4646         struct cnic_local *cp;
4647         struct cnic_eth_dev *ethdev = NULL;
4648         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4649
4650         probe = symbol_get(bnx2_cnic_probe);
4651         if (probe) {
4652                 ethdev = (*probe)(dev);
4653                 symbol_put(bnx2_cnic_probe);
4654         }
4655         if (!ethdev)
4656                 return NULL;
4657
4658         pdev = ethdev->pdev;
4659         if (!pdev)
4660                 return NULL;
4661
4662         dev_hold(dev);
4663         pci_dev_get(pdev);
4664         if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
4665             pdev->device == PCI_DEVICE_ID_NX2_5709S) {
4666                 u8 rev;
4667
4668                 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
4669                 if (rev < 0x10) {
4670                         pci_dev_put(pdev);
4671                         goto cnic_err;
4672                 }
4673         }
4674         pci_dev_put(pdev);
4675
4676         cdev = cnic_alloc_dev(dev, pdev);
4677         if (cdev == NULL)
4678                 goto cnic_err;
4679
4680         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
4681         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
4682
4683         cp = cdev->cnic_priv;
4684         cp->ethdev = ethdev;
4685         cdev->pcidev = pdev;
4686
4687         cp->cnic_ops = &cnic_bnx2_ops;
4688         cp->start_hw = cnic_start_bnx2_hw;
4689         cp->stop_hw = cnic_stop_bnx2_hw;
4690         cp->setup_pgtbl = cnic_setup_page_tbl;
4691         cp->alloc_resc = cnic_alloc_bnx2_resc;
4692         cp->free_resc = cnic_free_resc;
4693         cp->start_cm = cnic_cm_init_bnx2_hw;
4694         cp->stop_cm = cnic_cm_stop_bnx2_hw;
4695         cp->enable_int = cnic_enable_bnx2_int;
4696         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
4697         cp->close_conn = cnic_close_bnx2_conn;
4698         cp->next_idx = cnic_bnx2_next_idx;
4699         cp->hw_idx = cnic_bnx2_hw_idx;
4700         return cdev;
4701
4702 cnic_err:
4703         dev_put(dev);
4704         return NULL;
4705 }
4706
4707 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
4708 {
4709         struct pci_dev *pdev;
4710         struct cnic_dev *cdev;
4711         struct cnic_local *cp;
4712         struct cnic_eth_dev *ethdev = NULL;
4713         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4714
4715         probe = symbol_get(bnx2x_cnic_probe);
4716         if (probe) {
4717                 ethdev = (*probe)(dev);
4718                 symbol_put(bnx2x_cnic_probe);
4719         }
4720         if (!ethdev)
4721                 return NULL;
4722
4723         pdev = ethdev->pdev;
4724         if (!pdev)
4725                 return NULL;
4726
4727         dev_hold(dev);
4728         cdev = cnic_alloc_dev(dev, pdev);
4729         if (cdev == NULL) {
4730                 dev_put(dev);
4731                 return NULL;
4732         }
4733
4734         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
4735         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
4736
4737         cp = cdev->cnic_priv;
4738         cp->ethdev = ethdev;
4739         cdev->pcidev = pdev;
4740
4741         cp->cnic_ops = &cnic_bnx2x_ops;
4742         cp->start_hw = cnic_start_bnx2x_hw;
4743         cp->stop_hw = cnic_stop_bnx2x_hw;
4744         cp->setup_pgtbl = cnic_setup_page_tbl_le;
4745         cp->alloc_resc = cnic_alloc_bnx2x_resc;
4746         cp->free_resc = cnic_free_resc;
4747         cp->start_cm = cnic_cm_init_bnx2x_hw;
4748         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
4749         cp->enable_int = cnic_enable_bnx2x_int;
4750         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
4751         cp->ack_int = cnic_ack_bnx2x_msix;
4752         cp->close_conn = cnic_close_bnx2x_conn;
4753         cp->next_idx = cnic_bnx2x_next_idx;
4754         cp->hw_idx = cnic_bnx2x_hw_idx;
4755         return cdev;
4756 }
4757
4758 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
4759 {
4760         struct ethtool_drvinfo drvinfo;
4761         struct cnic_dev *cdev = NULL;
4762
4763         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
4764                 memset(&drvinfo, 0, sizeof(drvinfo));
4765                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
4766
4767                 if (!strcmp(drvinfo.driver, "bnx2"))
4768                         cdev = init_bnx2_cnic(dev);
4769                 if (!strcmp(drvinfo.driver, "bnx2x"))
4770                         cdev = init_bnx2x_cnic(dev);
4771                 if (cdev) {
4772                         write_lock(&cnic_dev_lock);
4773                         list_add(&cdev->list, &cnic_dev_list);
4774                         write_unlock(&cnic_dev_lock);
4775                 }
4776         }
4777         return cdev;
4778 }
4779
4780 /**
4781  * netdev event handler
4782  */
4783 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
4784                                                          void *ptr)
4785 {
4786         struct net_device *netdev = ptr;
4787         struct cnic_dev *dev;
4788         int if_type;
4789         int new_dev = 0;
4790
4791         dev = cnic_from_netdev(netdev);
4792
4793         if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
4794                 /* Check for the hot-plug device */
4795                 dev = is_cnic_dev(netdev);
4796                 if (dev) {
4797                         new_dev = 1;
4798                         cnic_hold(dev);
4799                 }
4800         }
4801         if (dev) {
4802                 struct cnic_local *cp = dev->cnic_priv;
4803
4804                 if (new_dev)
4805                         cnic_ulp_init(dev);
4806                 else if (event == NETDEV_UNREGISTER)
4807                         cnic_ulp_exit(dev);
4808
4809                 if (event == NETDEV_UP) {
4810                         if (cnic_register_netdev(dev) != 0) {
4811                                 cnic_put(dev);
4812                                 goto done;
4813                         }
4814                         if (!cnic_start_hw(dev))
4815                                 cnic_ulp_start(dev);
4816                 }
4817
4818                 rcu_read_lock();
4819                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
4820                         struct cnic_ulp_ops *ulp_ops;
4821                         void *ctx;
4822
4823                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
4824                         if (!ulp_ops || !ulp_ops->indicate_netevent)
4825                                 continue;
4826
4827                         ctx = cp->ulp_handle[if_type];
4828
4829                         ulp_ops->indicate_netevent(ctx, event);
4830                 }
4831                 rcu_read_unlock();
4832
4833                 if (event == NETDEV_GOING_DOWN) {
4834                         cnic_ulp_stop(dev);
4835                         cnic_stop_hw(dev);
4836                         cnic_unregister_netdev(dev);
4837                 } else if (event == NETDEV_UNREGISTER) {
4838                         write_lock(&cnic_dev_lock);
4839                         list_del_init(&dev->list);
4840                         write_unlock(&cnic_dev_lock);
4841
4842                         cnic_put(dev);
4843                         cnic_free_dev(dev);
4844                         goto done;
4845                 }
4846                 cnic_put(dev);
4847         }
4848 done:
4849         return NOTIFY_DONE;
4850 }
4851
4852 static struct notifier_block cnic_netdev_notifier = {
4853         .notifier_call = cnic_netdev_event
4854 };
4855
4856 static void cnic_release(void)
4857 {
4858         struct cnic_dev *dev;
4859         struct cnic_uio_dev *udev;
4860
4861         while (!list_empty(&cnic_dev_list)) {
4862                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
4863                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4864                         cnic_ulp_stop(dev);
4865                         cnic_stop_hw(dev);
4866                 }
4867
4868                 cnic_ulp_exit(dev);
4869                 cnic_unregister_netdev(dev);
4870                 list_del_init(&dev->list);
4871                 cnic_free_dev(dev);
4872         }
4873         while (!list_empty(&cnic_udev_list)) {
4874                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
4875                                   list);
4876                 cnic_free_uio(udev);
4877         }
4878 }
4879
4880 static int __init cnic_init(void)
4881 {
4882         int rc = 0;
4883
4884         pr_info("%s", version);
4885
4886         rc = register_netdevice_notifier(&cnic_netdev_notifier);
4887         if (rc) {
4888                 cnic_release();
4889                 return rc;
4890         }
4891
4892         cnic_wq = create_singlethread_workqueue("cnic_wq");
4893         if (!cnic_wq) {
4894                 cnic_release();
4895                 unregister_netdevice_notifier(&cnic_netdev_notifier);
4896                 return -ENOMEM;
4897         }
4898
4899         return 0;
4900 }
4901
4902 static void __exit cnic_exit(void)
4903 {
4904         unregister_netdevice_notifier(&cnic_netdev_notifier);
4905         cnic_release();
4906         destroy_workqueue(cnic_wq);
4907 }
4908
4909 module_init(cnic_init);
4910 module_exit(cnic_exit);