drivers/net/cnic.c

   1 /* cnic.c: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2009 Broadcom Corporation
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation.
   8  *
   9  * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
  10  * Modified and maintained by: Michael Chan <mchan@broadcom.com>
  11  */
  12
  13 #include <linux/module.h>
  14
  15 #include <linux/kernel.h>
  16 #include <linux/errno.h>
  17 #include <linux/list.h>
  18 #include <linux/slab.h>
  19 #include <linux/pci.h>
  20 #include <linux/init.h>
  21 #include <linux/netdevice.h>
  22 #include <linux/uio_driver.h>
  23 #include <linux/in.h>
  24 #include <linux/dma-mapping.h>
  25 #include <linux/delay.h>
  26 #include <linux/ethtool.h>
  27 #include <linux/if_vlan.h>
  28 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
  29 #define BCM_VLAN 1
  30 #endif
  31 #include <net/ip.h>
  32 #include <net/tcp.h>
  33 #include <net/route.h>
  34 #include <net/ipv6.h>
  35 #include <net/ip6_route.h>
  36 #include <scsi/iscsi_if.h>
  37
  38 #include "cnic_if.h"
  39 #include "bnx2.h"
  40 #include "bnx2x_reg.h"
  41 #include "bnx2x_fw_defs.h"
  42 #include "bnx2x_hsi.h"
  43 #include "../scsi/bnx2i/57xx_iscsi_constants.h"
  44 #include "../scsi/bnx2i/57xx_iscsi_hsi.h"
  45 #include "cnic.h"
  46 #include "cnic_defs.h"
  47
  48 #define DRV_MODULE_NAME         "cnic"
  49 #define PFX DRV_MODULE_NAME     ": "
  50
  51 static char version[] __devinitdata =
  52         "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  53
  54 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  55               "Chen (zongxi@broadcom.com");
  56 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
  57 MODULE_LICENSE("GPL");
  58 MODULE_VERSION(CNIC_MODULE_VERSION);
  59
  60 static LIST_HEAD(cnic_dev_list);
  61 static DEFINE_RWLOCK(cnic_dev_lock);
  62 static DEFINE_MUTEX(cnic_lock);
  63
  64 static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  65
  66 static int cnic_service_bnx2(void *, void *);
  67 static int cnic_service_bnx2x(void *, void *);
  68 static int cnic_ctl(void *, struct cnic_ctl_info *);
  69
  70 static struct cnic_ops cnic_bnx2_ops = {
  71         .cnic_owner     = THIS_MODULE,
  72         .cnic_handler   = cnic_service_bnx2,
  73         .cnic_ctl       = cnic_ctl,
  74 };
  75
  76 static struct cnic_ops cnic_bnx2x_ops = {
  77         .cnic_owner     = THIS_MODULE,
  78         .cnic_handler   = cnic_service_bnx2x,
  79         .cnic_ctl       = cnic_ctl,
  80 };
  81
  82 static void cnic_shutdown_rings(struct cnic_dev *);
  83 static void cnic_init_rings(struct cnic_dev *);
  84 static int cnic_cm_set_pg(struct cnic_sock *);
  85
  86 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
  87 {
  88         struct cnic_dev *dev = uinfo->priv;
  89         struct cnic_local *cp = dev->cnic_priv;
  90
  91         if (!capable(CAP_NET_ADMIN))
  92                 return -EPERM;
  93
  94         if (cp->uio_dev != -1)
  95                 return -EBUSY;
  96
  97         rtnl_lock();
  98         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
  99                 rtnl_unlock();
 100                 return -ENODEV;
 101         }
 102
 103         cp->uio_dev = iminor(inode);
 104
 105         cnic_init_rings(dev);
 106         rtnl_unlock();
 107
 108         return 0;
 109 }
 110
 111 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 112 {
 113         struct cnic_dev *dev = uinfo->priv;
 114         struct cnic_local *cp = dev->cnic_priv;
 115
 116         cnic_shutdown_rings(dev);
 117
 118         cp->uio_dev = -1;
 119         return 0;
 120 }
 121
 122 static inline void cnic_hold(struct cnic_dev *dev)
 123 {
 124         atomic_inc(&dev->ref_count);
 125 }
 126
 127 static inline void cnic_put(struct cnic_dev *dev)
 128 {
 129         atomic_dec(&dev->ref_count);
 130 }
 131
 132 static inline void csk_hold(struct cnic_sock *csk)
 133 {
 134         atomic_inc(&csk->ref_count);
 135 }
 136
 137 static inline void csk_put(struct cnic_sock *csk)
 138 {
 139         atomic_dec(&csk->ref_count);
 140 }
 141
 142 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 143 {
 144         struct cnic_dev *cdev;
 145
 146         read_lock(&cnic_dev_lock);
 147         list_for_each_entry(cdev, &cnic_dev_list, list) {
 148                 if (netdev == cdev->netdev) {
 149                         cnic_hold(cdev);
 150                         read_unlock(&cnic_dev_lock);
 151                         return cdev;
 152                 }
 153         }
 154         read_unlock(&cnic_dev_lock);
 155         return NULL;
 156 }
 157
 158 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 159 {
 160         atomic_inc(&ulp_ops->ref_count);
 161 }
 162
 163 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 164 {
 165         atomic_dec(&ulp_ops->ref_count);
 166 }
 167
 168 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 169 {
 170         struct cnic_local *cp = dev->cnic_priv;
 171         struct cnic_eth_dev *ethdev = cp->ethdev;
 172         struct drv_ctl_info info;
 173         struct drv_ctl_io *io = &info.data.io;
 174
 175         info.cmd = DRV_CTL_CTX_WR_CMD;
 176         io->cid_addr = cid_addr;
 177         io->offset = off;
 178         io->data = val;
 179         ethdev->drv_ctl(dev->netdev, &info);
 180 }
 181
 182 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 183 {
 184         struct cnic_local *cp = dev->cnic_priv;
 185         struct cnic_eth_dev *ethdev = cp->ethdev;
 186         struct drv_ctl_info info;
 187         struct drv_ctl_io *io = &info.data.io;
 188
 189         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 190         io->offset = off;
 191         io->dma_addr = addr;
 192         ethdev->drv_ctl(dev->netdev, &info);
 193 }
 194
 195 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 196 {
 197         struct cnic_local *cp = dev->cnic_priv;
 198         struct cnic_eth_dev *ethdev = cp->ethdev;
 199         struct drv_ctl_info info;
 200         struct drv_ctl_l2_ring *ring = &info.data.ring;
 201
 202         if (start)
 203                 info.cmd = DRV_CTL_START_L2_CMD;
 204         else
 205                 info.cmd = DRV_CTL_STOP_L2_CMD;
 206
 207         ring->cid = cid;
 208         ring->client_id = cl_id;
 209         ethdev->drv_ctl(dev->netdev, &info);
 210 }
 211
 212 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 213 {
 214         struct cnic_local *cp = dev->cnic_priv;
 215         struct cnic_eth_dev *ethdev = cp->ethdev;
 216         struct drv_ctl_info info;
 217         struct drv_ctl_io *io = &info.data.io;
 218
 219         info.cmd = DRV_CTL_IO_WR_CMD;
 220         io->offset = off;
 221         io->data = val;
 222         ethdev->drv_ctl(dev->netdev, &info);
 223 }
 224
 225 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 226 {
 227         struct cnic_local *cp = dev->cnic_priv;
 228         struct cnic_eth_dev *ethdev = cp->ethdev;
 229         struct drv_ctl_info info;
 230         struct drv_ctl_io *io = &info.data.io;
 231
 232         info.cmd = DRV_CTL_IO_RD_CMD;
 233         io->offset = off;
 234         ethdev->drv_ctl(dev->netdev, &info);
 235         return io->data;
 236 }
 237
 238 static int cnic_in_use(struct cnic_sock *csk)
 239 {
 240         return test_bit(SK_F_INUSE, &csk->flags);
 241 }
 242
 243 static void cnic_kwq_completion(struct cnic_dev *dev, u32 count)
 244 {
 245         struct cnic_local *cp = dev->cnic_priv;
 246         struct cnic_eth_dev *ethdev = cp->ethdev;
 247         struct drv_ctl_info info;
 248
 249         info.cmd = DRV_CTL_COMPLETION_CMD;
 250         info.data.comp.comp_count = count;
 251         ethdev->drv_ctl(dev->netdev, &info);
 252 }
 253
 254 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 255 {
 256         u32 i;
 257
 258         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
 259                 if (cp->ctx_tbl[i].cid == cid) {
 260                         *l5_cid = i;
 261                         return 0;
 262                 }
 263         }
 264         return -EINVAL;
 265 }
 266
 267 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 268                            struct cnic_sock *csk)
 269 {
 270         struct iscsi_path path_req;
 271         char *buf = NULL;
 272         u16 len = 0;
 273         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 274         struct cnic_ulp_ops *ulp_ops;
 275
 276         if (cp->uio_dev == -1)
 277                 return -ENODEV;
 278
 279         if (csk) {
 280                 len = sizeof(path_req);
 281                 buf = (char *) &path_req;
 282                 memset(&path_req, 0, len);
 283
 284                 msg_type = ISCSI_KEVENT_PATH_REQ;
 285                 path_req.handle = (u64) csk->l5_cid;
 286                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 287                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 288                                sizeof(struct in6_addr));
 289                         path_req.ip_addr_len = 16;
 290                 } else {
 291                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 292                                sizeof(struct in_addr));
 293                         path_req.ip_addr_len = 4;
 294                 }
 295                 path_req.vlan_id = csk->vlan_id;
 296                 path_req.pmtu = csk->mtu;
 297         }
 298
 299         rcu_read_lock();
 300         ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
 301         if (ulp_ops)
 302                 ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len);
 303         rcu_read_unlock();
 304         return 0;
 305 }
 306
 307 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 308                                   char *buf, u16 len)
 309 {
 310         int rc = -EINVAL;
 311
 312         switch (msg_type) {
 313         case ISCSI_UEVENT_PATH_UPDATE: {
 314                 struct cnic_local *cp;
 315                 u32 l5_cid;
 316                 struct cnic_sock *csk;
 317                 struct iscsi_path *path_resp;
 318
 319                 if (len < sizeof(*path_resp))
 320                         break;
 321
 322                 path_resp = (struct iscsi_path *) buf;
 323                 cp = dev->cnic_priv;
 324                 l5_cid = (u32) path_resp->handle;
 325                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 326                         break;
 327
 328                 csk = &cp->csk_tbl[l5_cid];
 329                 csk_hold(csk);
 330                 if (cnic_in_use(csk)) {
 331                         memcpy(csk->ha, path_resp->mac_addr, 6);
 332                         if (test_bit(SK_F_IPV6, &csk->flags))
 333                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 334                                        sizeof(struct in6_addr));
 335                         else
 336                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 337                                        sizeof(struct in_addr));
 338                         if (is_valid_ether_addr(csk->ha))
 339                                 cnic_cm_set_pg(csk);
 340                 }
 341                 csk_put(csk);
 342                 rc = 0;
 343         }
 344         }
 345
 346         return rc;
 347 }
 348
 349 static int cnic_offld_prep(struct cnic_sock *csk)
 350 {
 351         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 352                 return 0;
 353
 354         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 355                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 356                 return 0;
 357         }
 358
 359         return 1;
 360 }
 361
 362 static int cnic_close_prep(struct cnic_sock *csk)
 363 {
 364         clear_bit(SK_F_CONNECT_START, &csk->flags);
 365         smp_mb__after_clear_bit();
 366
 367         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 368                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 369                         msleep(1);
 370
 371                 return 1;
 372         }
 373         return 0;
 374 }
 375
 376 static int cnic_abort_prep(struct cnic_sock *csk)
 377 {
 378         clear_bit(SK_F_CONNECT_START, &csk->flags);
 379         smp_mb__after_clear_bit();
 380
 381         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 382                 msleep(1);
 383
 384         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 385                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 386                 return 1;
 387         }
 388
 389         return 0;
 390 }
 391
 392 static void cnic_uio_stop(void)
 393 {
 394         struct cnic_dev *dev;
 395
 396         read_lock(&cnic_dev_lock);
 397         list_for_each_entry(dev, &cnic_dev_list, list) {
 398                 struct cnic_local *cp = dev->cnic_priv;
 399
 400                 if (cp->cnic_uinfo)
 401                         cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 402         }
 403         read_unlock(&cnic_dev_lock);
 404 }
 405
 406 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 407 {
 408         struct cnic_dev *dev;
 409
 410         if (ulp_type >= MAX_CNIC_ULP_TYPE) {
 411                 printk(KERN_ERR PFX "cnic_register_driver: Bad type %d\n",
 412                        ulp_type);
 413                 return -EINVAL;
 414         }
 415         mutex_lock(&cnic_lock);
 416         if (cnic_ulp_tbl[ulp_type]) {
 417                 printk(KERN_ERR PFX "cnic_register_driver: Type %d has already "
 418                                     "been registered\n", ulp_type);
 419                 mutex_unlock(&cnic_lock);
 420                 return -EBUSY;
 421         }
 422
 423         read_lock(&cnic_dev_lock);
 424         list_for_each_entry(dev, &cnic_dev_list, list) {
 425                 struct cnic_local *cp = dev->cnic_priv;
 426
 427                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 428         }
 429         read_unlock(&cnic_dev_lock);
 430
 431         atomic_set(&ulp_ops->ref_count, 0);
 432         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 433         mutex_unlock(&cnic_lock);
 434
 435         /* Prevent race conditions with netdev_event */
 436         rtnl_lock();
 437         read_lock(&cnic_dev_lock);
 438         list_for_each_entry(dev, &cnic_dev_list, list) {
 439                 struct cnic_local *cp = dev->cnic_priv;
 440
 441                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 442                         ulp_ops->cnic_init(dev);
 443         }
 444         read_unlock(&cnic_dev_lock);
 445         rtnl_unlock();
 446
 447         return 0;
 448 }
 449
 450 int cnic_unregister_driver(int ulp_type)
 451 {
 452         struct cnic_dev *dev;
 453         struct cnic_ulp_ops *ulp_ops;
 454         int i = 0;
 455
 456         if (ulp_type >= MAX_CNIC_ULP_TYPE) {
 457                 printk(KERN_ERR PFX "cnic_unregister_driver: Bad type %d\n",
 458                        ulp_type);
 459                 return -EINVAL;
 460         }
 461         mutex_lock(&cnic_lock);
 462         ulp_ops = cnic_ulp_tbl[ulp_type];
 463         if (!ulp_ops) {
 464                 printk(KERN_ERR PFX "cnic_unregister_driver: Type %d has not "
 465                                     "been registered\n", ulp_type);
 466                 goto out_unlock;
 467         }
 468         read_lock(&cnic_dev_lock);
 469         list_for_each_entry(dev, &cnic_dev_list, list) {
 470                 struct cnic_local *cp = dev->cnic_priv;
 471
 472                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 473                         printk(KERN_ERR PFX "cnic_unregister_driver: Type %d "
 474                                "still has devices registered\n", ulp_type);
 475                         read_unlock(&cnic_dev_lock);
 476                         goto out_unlock;
 477                 }
 478         }
 479         read_unlock(&cnic_dev_lock);
 480
 481         if (ulp_type == CNIC_ULP_ISCSI)
 482                 cnic_uio_stop();
 483
 484         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
 485
 486         mutex_unlock(&cnic_lock);
 487         synchronize_rcu();
 488         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 489                 msleep(100);
 490                 i++;
 491         }
 492
 493         if (atomic_read(&ulp_ops->ref_count) != 0)
 494                 printk(KERN_WARNING PFX "%s: Failed waiting for ref count to go"
 495                                         " to zero.\n", dev->netdev->name);
 496         return 0;
 497
 498 out_unlock:
 499         mutex_unlock(&cnic_lock);
 500         return -EINVAL;
 501 }
 502
 503 static int cnic_start_hw(struct cnic_dev *);
 504 static void cnic_stop_hw(struct cnic_dev *);
 505
 506 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 507                                 void *ulp_ctx)
 508 {
 509         struct cnic_local *cp = dev->cnic_priv;
 510         struct cnic_ulp_ops *ulp_ops;
 511
 512         if (ulp_type >= MAX_CNIC_ULP_TYPE) {
 513                 printk(KERN_ERR PFX "cnic_register_device: Bad type %d\n",
 514                        ulp_type);
 515                 return -EINVAL;
 516         }
 517         mutex_lock(&cnic_lock);
 518         if (cnic_ulp_tbl[ulp_type] == NULL) {
 519                 printk(KERN_ERR PFX "cnic_register_device: Driver with type %d "
 520                                     "has not been registered\n", ulp_type);
 521                 mutex_unlock(&cnic_lock);
 522                 return -EAGAIN;
 523         }
 524         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 525                 printk(KERN_ERR PFX "cnic_register_device: Type %d has already "
 526                        "been registered to this device\n", ulp_type);
 527                 mutex_unlock(&cnic_lock);
 528                 return -EBUSY;
 529         }
 530
 531         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 532         cp->ulp_handle[ulp_type] = ulp_ctx;
 533         ulp_ops = cnic_ulp_tbl[ulp_type];
 534         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 535         cnic_hold(dev);
 536
 537         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 538                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 539                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 540
 541         mutex_unlock(&cnic_lock);
 542
 543         return 0;
 544
 545 }
 546 EXPORT_SYMBOL(cnic_register_driver);
 547
 548 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 549 {
 550         struct cnic_local *cp = dev->cnic_priv;
 551         int i = 0;
 552
 553         if (ulp_type >= MAX_CNIC_ULP_TYPE) {
 554                 printk(KERN_ERR PFX "cnic_unregister_device: Bad type %d\n",
 555                        ulp_type);
 556                 return -EINVAL;
 557         }
 558         mutex_lock(&cnic_lock);
 559         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 560                 rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
 561                 cnic_put(dev);
 562         } else {
 563                 printk(KERN_ERR PFX "cnic_unregister_device: device not "
 564                        "registered to this ulp type %d\n", ulp_type);
 565                 mutex_unlock(&cnic_lock);
 566                 return -EINVAL;
 567         }
 568         mutex_unlock(&cnic_lock);
 569
 570         synchronize_rcu();
 571
 572         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 573                i < 20) {
 574                 msleep(100);
 575                 i++;
 576         }
 577         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 578                 printk(KERN_WARNING PFX "%s: Failed waiting for ULP up call"
 579                                         " to complete.\n", dev->netdev->name);
 580
 581         return 0;
 582 }
 583 EXPORT_SYMBOL(cnic_unregister_driver);
 584
 585 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
 586 {
 587         id_tbl->start = start_id;
 588         id_tbl->max = size;
 589         id_tbl->next = 0;
 590         spin_lock_init(&id_tbl->lock);
 591         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 592         if (!id_tbl->table)
 593                 return -ENOMEM;
 594
 595         return 0;
 596 }
 597
 598 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 599 {
 600         kfree(id_tbl->table);
 601         id_tbl->table = NULL;
 602 }
 603
 604 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 605 {
 606         int ret = -1;
 607
 608         id -= id_tbl->start;
 609         if (id >= id_tbl->max)
 610                 return ret;
 611
 612         spin_lock(&id_tbl->lock);
 613         if (!test_bit(id, id_tbl->table)) {
 614                 set_bit(id, id_tbl->table);
 615                 ret = 0;
 616         }
 617         spin_unlock(&id_tbl->lock);
 618         return ret;
 619 }
 620
 621 /* Returns -1 if not successful */
 622 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 623 {
 624         u32 id;
 625
 626         spin_lock(&id_tbl->lock);
 627         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 628         if (id >= id_tbl->max) {
 629                 id = -1;
 630                 if (id_tbl->next != 0) {
 631                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 632                         if (id >= id_tbl->next)
 633                                 id = -1;
 634                 }
 635         }
 636
 637         if (id < id_tbl->max) {
 638                 set_bit(id, id_tbl->table);
 639                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 640                 id += id_tbl->start;
 641         }
 642
 643         spin_unlock(&id_tbl->lock);
 644
 645         return id;
 646 }
 647
 648 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 649 {
 650         if (id == -1)
 651                 return;
 652
 653         id -= id_tbl->start;
 654         if (id >= id_tbl->max)
 655                 return;
 656
 657         clear_bit(id, id_tbl->table);
 658 }
 659
 660 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 661 {
 662         int i;
 663
 664         if (!dma->pg_arr)
 665                 return;
 666
 667         for (i = 0; i < dma->num_pages; i++) {
 668                 if (dma->pg_arr[i]) {
 669                         pci_free_consistent(dev->pcidev, BCM_PAGE_SIZE,
 670                                             dma->pg_arr[i], dma->pg_map_arr[i]);
 671                         dma->pg_arr[i] = NULL;
 672                 }
 673         }
 674         if (dma->pgtbl) {
 675                 pci_free_consistent(dev->pcidev, dma->pgtbl_size,
 676                                     dma->pgtbl, dma->pgtbl_map);
 677                 dma->pgtbl = NULL;
 678         }
 679         kfree(dma->pg_arr);
 680         dma->pg_arr = NULL;
 681         dma->num_pages = 0;
 682 }
 683
 684 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 685 {
 686         int i;
 687         u32 *page_table = dma->pgtbl;
 688
 689         for (i = 0; i < dma->num_pages; i++) {
 690                 /* Each entry needs to be in big endian format. */
 691                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 692                 page_table++;
 693                 *page_table = (u32) dma->pg_map_arr[i];
 694                 page_table++;
 695         }
 696 }
 697
 698 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 699 {
 700         int i;
 701         u32 *page_table = dma->pgtbl;
 702
 703         for (i = 0; i < dma->num_pages; i++) {
 704                 /* Each entry needs to be in little endian format. */
 705                 *page_table = dma->pg_map_arr[i] & 0xffffffff;
 706                 page_table++;
 707                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 708                 page_table++;
 709         }
 710 }
 711
 712 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 713                           int pages, int use_pg_tbl)
 714 {
 715         int i, size;
 716         struct cnic_local *cp = dev->cnic_priv;
 717
 718         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 719         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 720         if (dma->pg_arr == NULL)
 721                 return -ENOMEM;
 722
 723         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 724         dma->num_pages = pages;
 725
 726         for (i = 0; i < pages; i++) {
 727                 dma->pg_arr[i] = pci_alloc_consistent(dev->pcidev,
 728                                                       BCM_PAGE_SIZE,
 729                                                       &dma->pg_map_arr[i]);
 730                 if (dma->pg_arr[i] == NULL)
 731                         goto error;
 732         }
 733         if (!use_pg_tbl)
 734                 return 0;
 735
 736         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 737                           ~(BCM_PAGE_SIZE - 1);
 738         dma->pgtbl = pci_alloc_consistent(dev->pcidev, dma->pgtbl_size,
 739                                           &dma->pgtbl_map);
 740         if (dma->pgtbl == NULL)
 741                 goto error;
 742
 743         cp->setup_pgtbl(dev, dma);
 744
 745         return 0;
 746
 747 error:
 748         cnic_free_dma(dev, dma);
 749         return -ENOMEM;
 750 }
 751
 752 static void cnic_free_context(struct cnic_dev *dev)
 753 {
 754         struct cnic_local *cp = dev->cnic_priv;
 755         int i;
 756
 757         for (i = 0; i < cp->ctx_blks; i++) {
 758                 if (cp->ctx_arr[i].ctx) {
 759                         pci_free_consistent(dev->pcidev, cp->ctx_blk_size,
 760                                             cp->ctx_arr[i].ctx,
 761                                             cp->ctx_arr[i].mapping);
 762                         cp->ctx_arr[i].ctx = NULL;
 763                 }
 764         }
 765 }
 766
 767 static void cnic_free_resc(struct cnic_dev *dev)
 768 {
 769         struct cnic_local *cp = dev->cnic_priv;
 770         int i = 0;
 771
 772         if (cp->cnic_uinfo) {
 773                 while (cp->uio_dev != -1 && i < 15) {
 774                         msleep(100);
 775                         i++;
 776                 }
 777                 uio_unregister_device(cp->cnic_uinfo);
 778                 kfree(cp->cnic_uinfo);
 779                 cp->cnic_uinfo = NULL;
 780         }
 781
 782         if (cp->l2_buf) {
 783                 pci_free_consistent(dev->pcidev, cp->l2_buf_size,
 784                                     cp->l2_buf, cp->l2_buf_map);
 785                 cp->l2_buf = NULL;
 786         }
 787
 788         if (cp->l2_ring) {
 789                 pci_free_consistent(dev->pcidev, cp->l2_ring_size,
 790                                     cp->l2_ring, cp->l2_ring_map);
 791                 cp->l2_ring = NULL;
 792         }
 793
 794         cnic_free_context(dev);
 795         kfree(cp->ctx_arr);
 796         cp->ctx_arr = NULL;
 797         cp->ctx_blks = 0;
 798
 799         cnic_free_dma(dev, &cp->gbl_buf_info);
 800         cnic_free_dma(dev, &cp->conn_buf_info);
 801         cnic_free_dma(dev, &cp->kwq_info);
 802         cnic_free_dma(dev, &cp->kwq_16_data_info);
 803         cnic_free_dma(dev, &cp->kcq_info);
 804         kfree(cp->iscsi_tbl);
 805         cp->iscsi_tbl = NULL;
 806         kfree(cp->ctx_tbl);
 807         cp->ctx_tbl = NULL;
 808
 809         cnic_free_id_tbl(&cp->cid_tbl);
 810 }
 811
 812 static int cnic_alloc_context(struct cnic_dev *dev)
 813 {
 814         struct cnic_local *cp = dev->cnic_priv;
 815
 816         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 817                 int i, k, arr_size;
 818
 819                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 820                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 821                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 822                            sizeof(struct cnic_ctx);
 823                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 824                 if (cp->ctx_arr == NULL)
 825                         return -ENOMEM;
 826
 827                 k = 0;
 828                 for (i = 0; i < 2; i++) {
 829                         u32 j, reg, off, lo, hi;
 830
 831                         if (i == 0)
 832                                 off = BNX2_PG_CTX_MAP;
 833                         else
 834                                 off = BNX2_ISCSI_CTX_MAP;
 835
 836                         reg = cnic_reg_rd_ind(dev, off);
 837                         lo = reg >> 16;
 838                         hi = reg & 0xffff;
 839                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 840                                 cp->ctx_arr[k].cid = j;
 841                 }
 842
 843                 cp->ctx_blks = k;
 844                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 845                         cp->ctx_blks = 0;
 846                         return -ENOMEM;
 847                 }
 848
 849                 for (i = 0; i < cp->ctx_blks; i++) {
 850                         cp->ctx_arr[i].ctx =
 851                                 pci_alloc_consistent(dev->pcidev, BCM_PAGE_SIZE,
 852                                                      &cp->ctx_arr[i].mapping);
 853                         if (cp->ctx_arr[i].ctx == NULL)
 854                                 return -ENOMEM;
 855                 }
 856         }
 857         return 0;
 858 }
 859
 860 static int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages)
 861 {
 862         struct cnic_local *cp = dev->cnic_priv;
 863
 864         cp->l2_ring_size = pages * BCM_PAGE_SIZE;
 865         cp->l2_ring = pci_alloc_consistent(dev->pcidev, cp->l2_ring_size,
 866                                            &cp->l2_ring_map);
 867         if (!cp->l2_ring)
 868                 return -ENOMEM;
 869
 870         cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
 871         cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size);
 872         cp->l2_buf = pci_alloc_consistent(dev->pcidev, cp->l2_buf_size,
 873                                            &cp->l2_buf_map);
 874         if (!cp->l2_buf)
 875                 return -ENOMEM;
 876
 877         return 0;
 878 }
 879
 880 static int cnic_alloc_uio(struct cnic_dev *dev) {
 881         struct cnic_local *cp = dev->cnic_priv;
 882         struct uio_info *uinfo;
 883         int ret;
 884
 885         uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC);
 886         if (!uinfo)
 887                 return -ENOMEM;
 888
 889         uinfo->mem[0].addr = dev->netdev->base_addr;
 890         uinfo->mem[0].internal_addr = dev->regview;
 891         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
 892         uinfo->mem[0].memtype = UIO_MEM_PHYS;
 893
 894         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
 895                 uinfo->mem[1].addr = (unsigned long) cp->status_blk & PAGE_MASK;
 896                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
 897                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
 898                 else
 899                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
 900
 901                 uinfo->name = "bnx2_cnic";
 902         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
 903                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
 904                         PAGE_MASK;
 905                 uinfo->mem[1].size = sizeof(struct host_def_status_block);
 906
 907                 uinfo->name = "bnx2x_cnic";
 908         }
 909
 910         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 911
 912         uinfo->mem[2].addr = (unsigned long) cp->l2_ring;
 913         uinfo->mem[2].size = cp->l2_ring_size;
 914         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
 915
 916         uinfo->mem[3].addr = (unsigned long) cp->l2_buf;
 917         uinfo->mem[3].size = cp->l2_buf_size;
 918         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
 919
 920         uinfo->version = CNIC_MODULE_VERSION;
 921         uinfo->irq = UIO_IRQ_CUSTOM;
 922
 923         uinfo->open = cnic_uio_open;
 924         uinfo->release = cnic_uio_close;
 925
 926         uinfo->priv = dev;
 927
 928         ret = uio_register_device(&dev->pcidev->dev, uinfo);
 929         if (ret) {
 930                 kfree(uinfo);
 931                 return ret;
 932         }
 933
 934         cp->cnic_uinfo = uinfo;
 935         return 0;
 936 }
 937
 938 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
 939 {
 940         struct cnic_local *cp = dev->cnic_priv;
 941         int ret;
 942
 943         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
 944         if (ret)
 945                 goto error;
 946         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
 947
 948         ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1);
 949         if (ret)
 950                 goto error;
 951         cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
 952
 953         ret = cnic_alloc_context(dev);
 954         if (ret)
 955                 goto error;
 956
 957         ret = cnic_alloc_l2_rings(dev, 2);
 958         if (ret)
 959                 goto error;
 960
 961         ret = cnic_alloc_uio(dev);
 962         if (ret)
 963                 goto error;
 964
 965         return 0;
 966
 967 error:
 968         cnic_free_resc(dev);
 969         return ret;
 970 }
 971
 972 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
 973 {
 974         struct cnic_local *cp = dev->cnic_priv;
 975         struct cnic_eth_dev *ethdev = cp->ethdev;
 976         int ctx_blk_size = cp->ethdev->ctx_blk_size;
 977         int total_mem, blks, i, cid_space;
 978
 979         if (BNX2X_ISCSI_START_CID < ethdev->starting_cid)
 980                 return -EINVAL;
 981
 982         cid_space = MAX_ISCSI_TBL_SZ +
 983                     (BNX2X_ISCSI_START_CID - ethdev->starting_cid);
 984
 985         total_mem = BNX2X_CONTEXT_MEM_SIZE * cid_space;
 986         blks = total_mem / ctx_blk_size;
 987         if (total_mem % ctx_blk_size)
 988                 blks++;
 989
 990         if (blks > cp->ethdev->ctx_tbl_len)
 991                 return -ENOMEM;
 992
 993         cp->ctx_arr = kzalloc(blks * sizeof(struct cnic_ctx), GFP_KERNEL);
 994         if (cp->ctx_arr == NULL)
 995                 return -ENOMEM;
 996
 997         cp->ctx_blks = blks;
 998         cp->ctx_blk_size = ctx_blk_size;
 999         if (BNX2X_CHIP_IS_E1H(cp->chip_id))
1000                 cp->ctx_align = 0;
1001         else
1002                 cp->ctx_align = ctx_blk_size;
1003
1004         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1005
1006         for (i = 0; i < blks; i++) {
1007                 cp->ctx_arr[i].ctx =
1008                         pci_alloc_consistent(dev->pcidev, cp->ctx_blk_size,
1009                                              &cp->ctx_arr[i].mapping);
1010                 if (cp->ctx_arr[i].ctx == NULL)
1011                         return -ENOMEM;
1012
1013                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1014                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1015                                 cnic_free_context(dev);
1016                                 cp->ctx_blk_size += cp->ctx_align;
1017                                 i = -1;
1018                                 continue;
1019                         }
1020                 }
1021         }
1022         return 0;
1023 }
1024
1025 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1026 {
1027         struct cnic_local *cp = dev->cnic_priv;
1028         int i, j, n, ret, pages;
1029         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1030
1031         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1032                                 GFP_KERNEL);
1033         if (!cp->iscsi_tbl)
1034                 goto error;
1035
1036         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1037                                   MAX_CNIC_L5_CONTEXT, GFP_KERNEL);
1038         if (!cp->ctx_tbl)
1039                 goto error;
1040
1041         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1042                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1043                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1044         }
1045
1046         pages = PAGE_ALIGN(MAX_CNIC_L5_CONTEXT * CNIC_KWQ16_DATA_SIZE) /
1047                 PAGE_SIZE;
1048
1049         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1050         if (ret)
1051                 return -ENOMEM;
1052
1053         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1054         for (i = 0, j = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1055                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1056
1057                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1058                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1059                                                    off;
1060
1061                 if ((i % n) == (n - 1))
1062                         j++;
1063         }
1064
1065         ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 0);
1066         if (ret)
1067                 goto error;
1068         cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
1069
1070         for (i = 0; i < KCQ_PAGE_CNT; i++) {
1071                 struct bnx2x_bd_chain_next *next =
1072                         (struct bnx2x_bd_chain_next *)
1073                         &cp->kcq[i][MAX_KCQE_CNT];
1074                 int j = i + 1;
1075
1076                 if (j >= KCQ_PAGE_CNT)
1077                         j = 0;
1078                 next->addr_hi = (u64) cp->kcq_info.pg_map_arr[j] >> 32;
1079                 next->addr_lo = cp->kcq_info.pg_map_arr[j] & 0xffffffff;
1080         }
1081
1082         pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
1083                            BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
1084         ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
1085         if (ret)
1086                 goto error;
1087
1088         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1089         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1090         if (ret)
1091                 goto error;
1092
1093         ret = cnic_alloc_bnx2x_context(dev);
1094         if (ret)
1095                 goto error;
1096
1097         cp->bnx2x_status_blk = cp->status_blk;
1098         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1099
1100         cp->l2_rx_ring_size = 15;
1101
1102         ret = cnic_alloc_l2_rings(dev, 4);
1103         if (ret)
1104                 goto error;
1105
1106         ret = cnic_alloc_uio(dev);
1107         if (ret)
1108                 goto error;
1109
1110         return 0;
1111
1112 error:
1113         cnic_free_resc(dev);
1114         return -ENOMEM;
1115 }
1116
1117 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1118 {
1119         return cp->max_kwq_idx -
1120                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1121 }
1122
1123 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1124                                   u32 num_wqes)
1125 {
1126         struct cnic_local *cp = dev->cnic_priv;
1127         struct kwqe *prod_qe;
1128         u16 prod, sw_prod, i;
1129
1130         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1131                 return -EAGAIN;         /* bnx2 is down */
1132
1133         spin_lock_bh(&cp->cnic_ulp_lock);
1134         if (num_wqes > cnic_kwq_avail(cp) &&
1135             !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) {
1136                 spin_unlock_bh(&cp->cnic_ulp_lock);
1137                 return -EAGAIN;
1138         }
1139
1140         cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT;
1141
1142         prod = cp->kwq_prod_idx;
1143         sw_prod = prod & MAX_KWQ_IDX;
1144         for (i = 0; i < num_wqes; i++) {
1145                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1146                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1147                 prod++;
1148                 sw_prod = prod & MAX_KWQ_IDX;
1149         }
1150         cp->kwq_prod_idx = prod;
1151
1152         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1153
1154         spin_unlock_bh(&cp->cnic_ulp_lock);
1155         return 0;
1156 }
1157
1158 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1159                                    union l5cm_specific_data *l5_data)
1160 {
1161         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1162         dma_addr_t map;
1163
1164         map = ctx->kwqe_data_mapping;
1165         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1166         l5_data->phy_address.hi = (u64) map >> 32;
1167         return ctx->kwqe_data;
1168 }
1169
1170 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1171                                 u32 type, union l5cm_specific_data *l5_data)
1172 {
1173         struct cnic_local *cp = dev->cnic_priv;
1174         struct l5cm_spe kwqe;
1175         struct kwqe_16 *kwq[1];
1176         int ret;
1177
1178         kwqe.hdr.conn_and_cmd_data =
1179                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1180                              BNX2X_HW_CID(cid, cp->func)));
1181         kwqe.hdr.type = cpu_to_le16(type);
1182         kwqe.hdr.reserved = 0;
1183         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1184         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1185
1186         kwq[0] = (struct kwqe_16 *) &kwqe;
1187
1188         spin_lock_bh(&cp->cnic_ulp_lock);
1189         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1190         spin_unlock_bh(&cp->cnic_ulp_lock);
1191
1192         if (ret == 1)
1193                 return 0;
1194
1195         return -EBUSY;
1196 }
1197
1198 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1199                                    struct kcqe *cqes[], u32 num_cqes)
1200 {
1201         struct cnic_local *cp = dev->cnic_priv;
1202         struct cnic_ulp_ops *ulp_ops;
1203
1204         rcu_read_lock();
1205         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1206         if (likely(ulp_ops)) {
1207                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1208                                           cqes, num_cqes);
1209         }
1210         rcu_read_unlock();
1211 }
1212
1213 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1214 {
1215         struct cnic_local *cp = dev->cnic_priv;
1216         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1217         int func = cp->func, pages;
1218         int hq_bds;
1219
1220         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1221         cp->num_ccells = req1->num_ccells_per_conn;
1222         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1223                               cp->num_iscsi_tasks;
1224         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1225                         BNX2X_ISCSI_R2TQE_SIZE;
1226         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1227         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1228         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1229         cp->num_cqs = req1->num_cqs;
1230
1231         if (!dev->max_iscsi_conn)
1232                 return 0;
1233
1234         /* init Tstorm RAM */
1235         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(func),
1236                   req1->rq_num_wqes);
1237         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1238                   PAGE_SIZE);
1239         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1240                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1241         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1242                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1243                   req1->num_tasks_per_conn);
1244
1245         /* init Ustorm RAM */
1246         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1247                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(func),
1248                   req1->rq_buffer_size);
1249         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1250                   PAGE_SIZE);
1251         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1252                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1253         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1254                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1255                   req1->num_tasks_per_conn);
1256         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(func),
1257                   req1->rq_num_wqes);
1258         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(func),
1259                   req1->cq_num_wqes);
1260         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1261                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1262
1263         /* init Xstorm RAM */
1264         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1265                   PAGE_SIZE);
1266         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1267                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1268         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1269                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1270                   req1->num_tasks_per_conn);
1271         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1272                   hq_bds);
1273         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(func),
1274                   req1->num_tasks_per_conn);
1275         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1276                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1277
1278         /* init Cstorm RAM */
1279         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1280                   PAGE_SIZE);
1281         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1282                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1283         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1284                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1285                   req1->num_tasks_per_conn);
1286         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(func),
1287                   req1->cq_num_wqes);
1288         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1289                   hq_bds);
1290
1291         return 0;
1292 }
1293
1294 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1295 {
1296         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1297         struct cnic_local *cp = dev->cnic_priv;
1298         int func = cp->func;
1299         struct iscsi_kcqe kcqe;
1300         struct kcqe *cqes[1];
1301
1302         memset(&kcqe, 0, sizeof(kcqe));
1303         if (!dev->max_iscsi_conn) {
1304                 kcqe.completion_status =
1305                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1306                 goto done;
1307         }
1308
1309         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1310                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1311         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1312                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1313                 req2->error_bit_map[1]);
1314
1315         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1316                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1317         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1318                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1319         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1320                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1321                 req2->error_bit_map[1]);
1322
1323         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1324                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1325
1326         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1327
1328 done:
1329         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1330         cqes[0] = (struct kcqe *) &kcqe;
1331         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1332
1333         return 0;
1334 }
1335
1336 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1337 {
1338         struct cnic_local *cp = dev->cnic_priv;
1339         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1340
1341         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1342                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1343
1344                 cnic_free_dma(dev, &iscsi->hq_info);
1345                 cnic_free_dma(dev, &iscsi->r2tq_info);
1346                 cnic_free_dma(dev, &iscsi->task_array_info);
1347         }
1348         cnic_free_id(&cp->cid_tbl, ctx->cid);
1349         ctx->cid = 0;
1350 }
1351
1352 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1353 {
1354         u32 cid;
1355         int ret, pages;
1356         struct cnic_local *cp = dev->cnic_priv;
1357         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1358         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1359
1360         cid = cnic_alloc_new_id(&cp->cid_tbl);
1361         if (cid == -1) {
1362                 ret = -ENOMEM;
1363                 goto error;
1364         }
1365
1366         ctx->cid = cid;
1367         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1368
1369         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1370         if (ret)
1371                 goto error;
1372
1373         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1374         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1375         if (ret)
1376                 goto error;
1377
1378         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1379         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1380         if (ret)
1381                 goto error;
1382
1383         return 0;
1384
1385 error:
1386         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1387         return ret;
1388 }
1389
1390 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1391                                 struct regpair *ctx_addr)
1392 {
1393         struct cnic_local *cp = dev->cnic_priv;
1394         struct cnic_eth_dev *ethdev = cp->ethdev;
1395         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1396         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1397         unsigned long align_off = 0;
1398         dma_addr_t ctx_map;
1399         void *ctx;
1400
1401         if (cp->ctx_align) {
1402                 unsigned long mask = cp->ctx_align - 1;
1403
1404                 if (cp->ctx_arr[blk].mapping & mask)
1405                         align_off = cp->ctx_align -
1406                                     (cp->ctx_arr[blk].mapping & mask);
1407         }
1408         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1409                 (off * BNX2X_CONTEXT_MEM_SIZE);
1410         ctx = cp->ctx_arr[blk].ctx + align_off +
1411               (off * BNX2X_CONTEXT_MEM_SIZE);
1412         if (init)
1413                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1414
1415         ctx_addr->lo = ctx_map & 0xffffffff;
1416         ctx_addr->hi = (u64) ctx_map >> 32;
1417         return ctx;
1418 }
1419
1420 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1421                                 u32 num)
1422 {
1423         struct cnic_local *cp = dev->cnic_priv;
1424         struct iscsi_kwqe_conn_offload1 *req1 =
1425                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1426         struct iscsi_kwqe_conn_offload2 *req2 =
1427                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1428         struct iscsi_kwqe_conn_offload3 *req3;
1429         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1430         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1431         u32 cid = ctx->cid;
1432         u32 hw_cid = BNX2X_HW_CID(cid, cp->func);
1433         struct iscsi_context *ictx;
1434         struct regpair context_addr;
1435         int i, j, n = 2, n_max;
1436
1437         ctx->ctx_flags = 0;
1438         if (!req2->num_additional_wqes)
1439                 return -EINVAL;
1440
1441         n_max = req2->num_additional_wqes + 2;
1442
1443         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1444         if (ictx == NULL)
1445                 return -ENOMEM;
1446
1447         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1448
1449         ictx->xstorm_ag_context.hq_prod = 1;
1450
1451         ictx->xstorm_st_context.iscsi.first_burst_length =
1452                 ISCSI_DEF_FIRST_BURST_LEN;
1453         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1454                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1455         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1456                 req1->sq_page_table_addr_lo;
1457         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1458                 req1->sq_page_table_addr_hi;
1459         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1460         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1461         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1462                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1463         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1464                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1465         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1466                 iscsi->hq_info.pgtbl[0];
1467         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1468                 iscsi->hq_info.pgtbl[1];
1469         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1470                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1471         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1472                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1473         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1474                 iscsi->r2tq_info.pgtbl[0];
1475         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1476                 iscsi->r2tq_info.pgtbl[1];
1477         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1478                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1479         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1480                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1481         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1482                 BNX2X_ISCSI_PBL_NOT_CACHED;
1483         ictx->xstorm_st_context.iscsi.flags.flags |=
1484                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1485         ictx->xstorm_st_context.iscsi.flags.flags |=
1486                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1487
1488         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1489         /* TSTORM requires the base address of RQ DB & not PTE */
1490         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1491                 req2->rq_page_table_addr_lo & PAGE_MASK;
1492         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1493                 req2->rq_page_table_addr_hi;
1494         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1495         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1496         ictx->tstorm_st_context.tcp.flags2 |=
1497                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1498
1499         ictx->timers_context.flags |= ISCSI_TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1500
1501         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1502                 req2->rq_page_table_addr_lo & 0xffffffff;
1503         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1504                 (u64) req2->rq_page_table_addr_hi >> 32;
1505         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1506         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1507         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1508                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1509         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1510                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1511         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1512                 iscsi->r2tq_info.pgtbl[0];
1513         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1514                 iscsi->r2tq_info.pgtbl[1];
1515         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1516                 req1->cq_page_table_addr_lo;
1517         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1518                 req1->cq_page_table_addr_hi;
1519         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1520         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1521         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1522         ictx->ustorm_st_context.task_pbe_cache_index =
1523                 BNX2X_ISCSI_PBL_NOT_CACHED;
1524         ictx->ustorm_st_context.task_pdu_cache_index =
1525                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1526
1527         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1528                 if (j == 3) {
1529                         if (n >= n_max)
1530                                 break;
1531                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1532                         j = 0;
1533                 }
1534                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1535                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1536                         req3->qp_first_pte[j].hi;
1537                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1538                         req3->qp_first_pte[j].lo;
1539         }
1540
1541         ictx->ustorm_st_context.task_pbl_base.lo =
1542                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1543         ictx->ustorm_st_context.task_pbl_base.hi =
1544                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1545         ictx->ustorm_st_context.tce_phy_addr.lo =
1546                 iscsi->task_array_info.pgtbl[0];
1547         ictx->ustorm_st_context.tce_phy_addr.hi =
1548                 iscsi->task_array_info.pgtbl[1];
1549         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1550         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1551         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1552         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1553                 ISCSI_DEF_MAX_BURST_LEN;
1554         ictx->ustorm_st_context.negotiated_rx |=
1555                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1556                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1557
1558         ictx->cstorm_st_context.hq_pbl_base.lo =
1559                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1560         ictx->cstorm_st_context.hq_pbl_base.hi =
1561                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1562         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1563         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1564         ictx->cstorm_st_context.task_pbl_base.lo =
1565                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1566         ictx->cstorm_st_context.task_pbl_base.hi =
1567                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1568         /* CSTORM and USTORM initialization is different, CSTORM requires
1569          * CQ DB base & not PTE addr */
1570         ictx->cstorm_st_context.cq_db_base.lo =
1571                 req1->cq_page_table_addr_lo & PAGE_MASK;
1572         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1573         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1574         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1575         for (i = 0; i < cp->num_cqs; i++) {
1576                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1577                         ISCSI_INITIAL_SN;
1578                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1579                         ISCSI_INITIAL_SN;
1580         }
1581
1582         ictx->xstorm_ag_context.cdu_reserved =
1583                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1584                                        ISCSI_CONNECTION_TYPE);
1585         ictx->ustorm_ag_context.cdu_usage =
1586                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1587                                        ISCSI_CONNECTION_TYPE);
1588         return 0;
1589
1590 }
1591
1592 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1593                                    u32 num, int *work)
1594 {
1595         struct iscsi_kwqe_conn_offload1 *req1;
1596         struct iscsi_kwqe_conn_offload2 *req2;
1597         struct cnic_local *cp = dev->cnic_priv;
1598         struct iscsi_kcqe kcqe;
1599         struct kcqe *cqes[1];
1600         u32 l5_cid;
1601         int ret;
1602
1603         if (num < 2) {
1604                 *work = num;
1605                 return -EINVAL;
1606         }
1607
1608         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1609         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1610         if ((num - 2) < req2->num_additional_wqes) {
1611                 *work = num;
1612                 return -EINVAL;
1613         }
1614         *work = 2 + req2->num_additional_wqes;;
1615
1616         l5_cid = req1->iscsi_conn_id;
1617         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1618                 return -EINVAL;
1619
1620         memset(&kcqe, 0, sizeof(kcqe));
1621         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1622         kcqe.iscsi_conn_id = l5_cid;
1623         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1624
1625         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1626                 atomic_dec(&cp->iscsi_conn);
1627                 ret = 0;
1628                 goto done;
1629         }
1630         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1631         if (ret) {
1632                 atomic_dec(&cp->iscsi_conn);
1633                 ret = 0;
1634                 goto done;
1635         }
1636         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1637         if (ret < 0) {
1638                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1639                 atomic_dec(&cp->iscsi_conn);
1640                 goto done;
1641         }
1642
1643         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1644         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp->ctx_tbl[l5_cid].cid,
1645                                                   cp->func);
1646
1647 done:
1648         cqes[0] = (struct kcqe *) &kcqe;
1649         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1650         return ret;
1651 }
1652
1653
1654 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1655 {
1656         struct cnic_local *cp = dev->cnic_priv;
1657         struct iscsi_kwqe_conn_update *req =
1658                 (struct iscsi_kwqe_conn_update *) kwqe;
1659         void *data;
1660         union l5cm_specific_data l5_data;
1661         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1662         int ret;
1663
1664         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1665                 return -EINVAL;
1666
1667         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1668         if (!data)
1669                 return -ENOMEM;
1670
1671         memcpy(data, kwqe, sizeof(struct kwqe));
1672
1673         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1674                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1675         return ret;
1676 }
1677
1678 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1679 {
1680         struct cnic_local *cp = dev->cnic_priv;
1681         struct iscsi_kwqe_conn_destroy *req =
1682                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1683         union l5cm_specific_data l5_data;
1684         u32 l5_cid = req->reserved0;
1685         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1686         int ret = 0;
1687         struct iscsi_kcqe kcqe;
1688         struct kcqe *cqes[1];
1689
1690         if (!(ctx->ctx_flags & CTX_FL_OFFLD_START))
1691                 goto skip_cfc_delete;
1692
1693         while (!time_after(jiffies, ctx->timestamp + (2 * HZ)))
1694                 msleep(250);
1695
1696         init_waitqueue_head(&ctx->waitq);
1697         ctx->wait_cond = 0;
1698         memset(&l5_data, 0, sizeof(l5_data));
1699         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
1700                                   req->context_id,
1701                                   ETH_CONNECTION_TYPE |
1702                                   (1 << SPE_HDR_COMMON_RAMROD_SHIFT),
1703                                   &l5_data);
1704         if (ret == 0)
1705                 wait_event(ctx->waitq, ctx->wait_cond);
1706
1707 skip_cfc_delete:
1708         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1709
1710         atomic_dec(&cp->iscsi_conn);
1711
1712         memset(&kcqe, 0, sizeof(kcqe));
1713         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1714         kcqe.iscsi_conn_id = l5_cid;
1715         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1716         kcqe.iscsi_conn_context_id = req->context_id;
1717
1718         cqes[0] = (struct kcqe *) &kcqe;
1719         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1720
1721         return ret;
1722 }
1723
1724 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1725                                       struct l4_kwq_connect_req1 *kwqe1,
1726                                       struct l4_kwq_connect_req3 *kwqe3,
1727                                       struct l5cm_active_conn_buffer *conn_buf)
1728 {
1729         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1730         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1731                 &conn_buf->xstorm_conn_buffer;
1732         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1733                 &conn_buf->tstorm_conn_buffer;
1734         struct regpair context_addr;
1735         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1736         struct in6_addr src_ip, dst_ip;
1737         int i;
1738         u32 *addrp;
1739
1740         addrp = (u32 *) &conn_addr->local_ip_addr;
1741         for (i = 0; i < 4; i++, addrp++)
1742                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1743
1744         addrp = (u32 *) &conn_addr->remote_ip_addr;
1745         for (i = 0; i < 4; i++, addrp++)
1746                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1747
1748         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1749
1750         xstorm_buf->context_addr.hi = context_addr.hi;
1751         xstorm_buf->context_addr.lo = context_addr.lo;
1752         xstorm_buf->mss = 0xffff;
1753         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1754         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1755                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1756         xstorm_buf->pseudo_header_checksum =
1757                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1758
1759         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1760                 tstorm_buf->params |=
1761                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1762         if (kwqe3->ka_timeout) {
1763                 tstorm_buf->ka_enable = 1;
1764                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1765                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1766                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1767         }
1768         tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1769         tstorm_buf->snd_buf = kwqe3->snd_buf;
1770         tstorm_buf->max_rt_time = 0xffffffff;
1771 }
1772
1773 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1774 {
1775         struct cnic_local *cp = dev->cnic_priv;
1776         int func = CNIC_FUNC(cp);
1777         u8 *mac = dev->mac_addr;
1778
1779         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1780                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(func), mac[0]);
1781         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1782                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(func), mac[1]);
1783         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1784                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(func), mac[2]);
1785         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1786                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(func), mac[3]);
1787         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1788                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(func), mac[4]);
1789         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1790                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(func), mac[5]);
1791
1792         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1793                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func), mac[5]);
1794         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1795                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1796                  mac[4]);
1797         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1798                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func), mac[3]);
1799         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1800                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1801                  mac[2]);
1802         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1803                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 2,
1804                  mac[1]);
1805         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1806                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 3,
1807                  mac[0]);
1808 }
1809
1810 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1811 {
1812         struct cnic_local *cp = dev->cnic_priv;
1813         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1814         u16 tstorm_flags = 0;
1815
1816         if (tcp_ts) {
1817                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1818                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1819         }
1820
1821         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1822                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), xstorm_flags);
1823
1824         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1825                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), tstorm_flags);
1826 }
1827
1828 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
1829                               u32 num, int *work)
1830 {
1831         struct cnic_local *cp = dev->cnic_priv;
1832         struct l4_kwq_connect_req1 *kwqe1 =
1833                 (struct l4_kwq_connect_req1 *) wqes[0];
1834         struct l4_kwq_connect_req3 *kwqe3;
1835         struct l5cm_active_conn_buffer *conn_buf;
1836         struct l5cm_conn_addr_params *conn_addr;
1837         union l5cm_specific_data l5_data;
1838         u32 l5_cid = kwqe1->pg_cid;
1839         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
1840         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1841         int ret;
1842
1843         if (num < 2) {
1844                 *work = num;
1845                 return -EINVAL;
1846         }
1847
1848         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
1849                 *work = 3;
1850         else
1851                 *work = 2;
1852
1853         if (num < *work) {
1854                 *work = num;
1855                 return -EINVAL;
1856         }
1857
1858         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
1859                 printk(KERN_ERR PFX "%s: conn_buf size too big\n",
1860                                dev->netdev->name);
1861                 return -ENOMEM;
1862         }
1863         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1864         if (!conn_buf)
1865                 return -ENOMEM;
1866
1867         memset(conn_buf, 0, sizeof(*conn_buf));
1868
1869         conn_addr = &conn_buf->conn_addr_buf;
1870         conn_addr->remote_addr_0 = csk->ha[0];
1871         conn_addr->remote_addr_1 = csk->ha[1];
1872         conn_addr->remote_addr_2 = csk->ha[2];
1873         conn_addr->remote_addr_3 = csk->ha[3];
1874         conn_addr->remote_addr_4 = csk->ha[4];
1875         conn_addr->remote_addr_5 = csk->ha[5];
1876
1877         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
1878                 struct l4_kwq_connect_req2 *kwqe2 =
1879                         (struct l4_kwq_connect_req2 *) wqes[1];
1880
1881                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
1882                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
1883                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
1884
1885                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
1886                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
1887                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
1888                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
1889         }
1890         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
1891
1892         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
1893         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
1894         conn_addr->local_tcp_port = kwqe1->src_port;
1895         conn_addr->remote_tcp_port = kwqe1->dst_port;
1896
1897         conn_addr->pmtu = kwqe3->pmtu;
1898         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
1899
1900         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1901                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->func), csk->vlan_id);
1902
1903         cnic_bnx2x_set_tcp_timestamp(dev,
1904                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
1905
1906         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
1907                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1908         if (!ret)
1909                 ctx->ctx_flags |= CTX_FL_OFFLD_START;
1910
1911         return ret;
1912 }
1913
1914 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
1915 {
1916         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
1917         union l5cm_specific_data l5_data;
1918         int ret;
1919
1920         memset(&l5_data, 0, sizeof(l5_data));
1921         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
1922                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1923         return ret;
1924 }
1925
1926 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
1927 {
1928         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
1929         union l5cm_specific_data l5_data;
1930         int ret;
1931
1932         memset(&l5_data, 0, sizeof(l5_data));
1933         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
1934                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1935         return ret;
1936 }
1937 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1938 {
1939         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
1940         struct l4_kcq kcqe;
1941         struct kcqe *cqes[1];
1942
1943         memset(&kcqe, 0, sizeof(kcqe));
1944         kcqe.pg_host_opaque = req->host_opaque;
1945         kcqe.pg_cid = req->host_opaque;
1946         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
1947         cqes[0] = (struct kcqe *) &kcqe;
1948         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1949         return 0;
1950 }
1951
1952 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1953 {
1954         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
1955         struct l4_kcq kcqe;
1956         struct kcqe *cqes[1];
1957
1958         memset(&kcqe, 0, sizeof(kcqe));
1959         kcqe.pg_host_opaque = req->pg_host_opaque;
1960         kcqe.pg_cid = req->pg_cid;
1961         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
1962         cqes[0] = (struct kcqe *) &kcqe;
1963         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1964         return 0;
1965 }
1966
1967 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1968                                    u32 num_wqes)
1969 {
1970         int i, work, ret;
1971         u32 opcode;
1972         struct kwqe *kwqe;
1973
1974         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1975                 return -EAGAIN;         /* bnx2 is down */
1976
1977         for (i = 0; i < num_wqes; ) {
1978                 kwqe = wqes[i];
1979                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
1980                 work = 1;
1981
1982                 switch (opcode) {
1983                 case ISCSI_KWQE_OPCODE_INIT1:
1984                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
1985                         break;
1986                 case ISCSI_KWQE_OPCODE_INIT2:
1987                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
1988                         break;
1989                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
1990                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
1991                                                      num_wqes - i, &work);
1992                         break;
1993                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
1994                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
1995                         break;
1996                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
1997                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
1998                         break;
1999                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2000                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2001                                                  &work);
2002                         break;
2003                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2004                         ret = cnic_bnx2x_close(dev, kwqe);
2005                         break;
2006                 case L4_KWQE_OPCODE_VALUE_RESET:
2007                         ret = cnic_bnx2x_reset(dev, kwqe);
2008                         break;
2009                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2010                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2011                         break;
2012                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2013                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2014                         break;
2015                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2016                         ret = 0;
2017                         break;
2018                 default:
2019                         ret = 0;
2020                         printk(KERN_ERR PFX "%s: Unknown type of KWQE(0x%x)\n",
2021                                dev->netdev->name, opcode);
2022                         break;
2023                 }
2024                 if (ret < 0)
2025                         printk(KERN_ERR PFX "%s: KWQE(0x%x) failed\n",
2026                                dev->netdev->name, opcode);
2027                 i += work;
2028         }
2029         return 0;
2030 }
2031
2032 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2033 {
2034         struct cnic_local *cp = dev->cnic_priv;
2035         int i, j;
2036
2037         i = 0;
2038         j = 1;
2039         while (num_cqes) {
2040                 struct cnic_ulp_ops *ulp_ops;
2041                 int ulp_type;
2042                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2043                 u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;
2044
2045                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2046                         cnic_kwq_completion(dev, 1);
2047
2048                 while (j < num_cqes) {
2049                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2050
2051                         if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
2052                                 break;
2053
2054                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2055                                 cnic_kwq_completion(dev, 1);
2056                         j++;
2057                 }
2058
2059                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2060                         ulp_type = CNIC_ULP_RDMA;
2061                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2062                         ulp_type = CNIC_ULP_ISCSI;
2063                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2064                         ulp_type = CNIC_ULP_L4;
2065                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2066                         goto end;
2067                 else {
2068                         printk(KERN_ERR PFX "%s: Unknown type of KCQE(0x%x)\n",
2069                                dev->netdev->name, kcqe_op_flag);
2070                         goto end;
2071                 }
2072
2073                 rcu_read_lock();
2074                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2075                 if (likely(ulp_ops)) {
2076                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2077                                                   cp->completed_kcq + i, j);
2078                 }
2079                 rcu_read_unlock();
2080 end:
2081                 num_cqes -= j;
2082                 i += j;
2083                 j = 1;
2084         }
2085         return;
2086 }
2087
2088 static u16 cnic_bnx2_next_idx(u16 idx)
2089 {
2090         return idx + 1;
2091 }
2092
2093 static u16 cnic_bnx2_hw_idx(u16 idx)
2094 {
2095         return idx;
2096 }
2097
2098 static u16 cnic_bnx2x_next_idx(u16 idx)
2099 {
2100         idx++;
2101         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2102                 idx++;
2103
2104         return idx;
2105 }
2106
2107 static u16 cnic_bnx2x_hw_idx(u16 idx)
2108 {
2109         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2110                 idx++;
2111         return idx;
2112 }
2113
2114 static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
2115 {
2116         struct cnic_local *cp = dev->cnic_priv;
2117         u16 i, ri, last;
2118         struct kcqe *kcqe;
2119         int kcqe_cnt = 0, last_cnt = 0;
2120
2121         i = ri = last = *sw_prod;
2122         ri &= MAX_KCQ_IDX;
2123
2124         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2125                 kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2126                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2127                 i = cp->next_idx(i);
2128                 ri = i & MAX_KCQ_IDX;
2129                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2130                         last_cnt = kcqe_cnt;
2131                         last = i;
2132                 }
2133         }
2134
2135         *sw_prod = last;
2136         return last_cnt;
2137 }
2138
2139 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2140 {
2141         u16 rx_cons = *cp->rx_cons_ptr;
2142         u16 tx_cons = *cp->tx_cons_ptr;
2143
2144         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2145                 cp->tx_cons = tx_cons;
2146                 cp->rx_cons = rx_cons;
2147
2148                 uio_event_notify(cp->cnic_uinfo);
2149         }
2150 }
2151
2152 static int cnic_service_bnx2(void *data, void *status_blk)
2153 {
2154         struct cnic_dev *dev = data;
2155         struct status_block *sblk = status_blk;
2156         struct cnic_local *cp = dev->cnic_priv;
2157         u32 status_idx = sblk->status_idx;
2158         u16 hw_prod, sw_prod;
2159         int kcqe_cnt;
2160
2161         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2162                 return status_idx;
2163
2164         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2165
2166         hw_prod = sblk->status_completion_producer_index;
2167         sw_prod = cp->kcq_prod_idx;
2168         while (sw_prod != hw_prod) {
2169                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2170                 if (kcqe_cnt == 0)
2171                         goto done;
2172
2173                 service_kcqes(dev, kcqe_cnt);
2174
2175                 /* Tell compiler that status_blk fields can change. */
2176                 barrier();
2177                 if (status_idx != sblk->status_idx) {
2178                         status_idx = sblk->status_idx;
2179                         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2180                         hw_prod = sblk->status_completion_producer_index;
2181                 } else
2182                         break;
2183         }
2184
2185 done:
2186         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2187
2188         cp->kcq_prod_idx = sw_prod;
2189
2190         cnic_chk_pkt_rings(cp);
2191         return status_idx;
2192 }
2193
2194 static void cnic_service_bnx2_msix(unsigned long data)
2195 {
2196         struct cnic_dev *dev = (struct cnic_dev *) data;
2197         struct cnic_local *cp = dev->cnic_priv;
2198         struct status_block_msix *status_blk = cp->bnx2_status_blk;
2199         u32 status_idx = status_blk->status_idx;
2200         u16 hw_prod, sw_prod;
2201         int kcqe_cnt;
2202
2203         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2204
2205         hw_prod = status_blk->status_completion_producer_index;
2206         sw_prod = cp->kcq_prod_idx;
2207         while (sw_prod != hw_prod) {
2208                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2209                 if (kcqe_cnt == 0)
2210                         goto done;
2211
2212                 service_kcqes(dev, kcqe_cnt);
2213
2214                 /* Tell compiler that status_blk fields can change. */
2215                 barrier();
2216                 if (status_idx != status_blk->status_idx) {
2217                         status_idx = status_blk->status_idx;
2218                         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2219                         hw_prod = status_blk->status_completion_producer_index;
2220                 } else
2221                         break;
2222         }
2223
2224 done:
2225         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2226         cp->kcq_prod_idx = sw_prod;
2227
2228         cnic_chk_pkt_rings(cp);
2229
2230         cp->last_status_idx = status_idx;
2231         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2232                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2233 }
2234
2235 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2236 {
2237         struct cnic_dev *dev = dev_instance;
2238         struct cnic_local *cp = dev->cnic_priv;
2239         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2240
2241         if (cp->ack_int)
2242                 cp->ack_int(dev);
2243
2244         prefetch(cp->status_blk);
2245         prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2246
2247         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2248                 tasklet_schedule(&cp->cnic_irq_task);
2249
2250         return IRQ_HANDLED;
2251 }
2252
2253 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2254                                       u16 index, u8 op, u8 update)
2255 {
2256         struct cnic_local *cp = dev->cnic_priv;
2257         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2258                        COMMAND_REG_INT_ACK);
2259         struct igu_ack_register igu_ack;
2260
2261         igu_ack.status_block_index = index;
2262         igu_ack.sb_id_and_flags =
2263                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2264                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2265                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2266                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2267
2268         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2269 }
2270
2271 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2272 {
2273         struct cnic_local *cp = dev->cnic_priv;
2274
2275         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID, 0,
2276                            IGU_INT_DISABLE, 0);
2277 }
2278
2279 static void cnic_service_bnx2x_bh(unsigned long data)
2280 {
2281         struct cnic_dev *dev = (struct cnic_dev *) data;
2282         struct cnic_local *cp = dev->cnic_priv;
2283         u16 hw_prod, sw_prod;
2284         struct cstorm_status_block_c *sblk =
2285                 &cp->bnx2x_status_blk->c_status_block;
2286         u32 status_idx = sblk->status_block_index;
2287         int kcqe_cnt;
2288
2289         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2290                 return;
2291
2292         hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2293         hw_prod = cp->hw_idx(hw_prod);
2294         sw_prod = cp->kcq_prod_idx;
2295         while (sw_prod != hw_prod) {
2296                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2297                 if (kcqe_cnt == 0)
2298                         goto done;
2299
2300                 service_kcqes(dev, kcqe_cnt);
2301
2302                 /* Tell compiler that sblk fields can change. */
2303                 barrier();
2304                 if (status_idx == sblk->status_block_index)
2305                         break;
2306
2307                 status_idx = sblk->status_block_index;
2308                 hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2309                 hw_prod = cp->hw_idx(hw_prod);
2310         }
2311
2312 done:
2313         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod + MAX_KCQ_IDX);
2314         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID,
2315                            status_idx, IGU_INT_ENABLE, 1);
2316
2317         cp->kcq_prod_idx = sw_prod;
2318         return;
2319 }
2320
2321 static int cnic_service_bnx2x(void *data, void *status_blk)
2322 {
2323         struct cnic_dev *dev = data;
2324         struct cnic_local *cp = dev->cnic_priv;
2325         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2326
2327         prefetch(cp->status_blk);
2328         prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2329
2330         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2331                 tasklet_schedule(&cp->cnic_irq_task);
2332
2333         cnic_chk_pkt_rings(cp);
2334
2335         return 0;
2336 }
2337
2338 static void cnic_ulp_stop(struct cnic_dev *dev)
2339 {
2340         struct cnic_local *cp = dev->cnic_priv;
2341         int if_type;
2342
2343         if (cp->cnic_uinfo)
2344                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2345
2346         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2347                 struct cnic_ulp_ops *ulp_ops;
2348
2349                 mutex_lock(&cnic_lock);
2350                 ulp_ops = cp->ulp_ops[if_type];
2351                 if (!ulp_ops) {
2352                         mutex_unlock(&cnic_lock);
2353                         continue;
2354                 }
2355                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2356                 mutex_unlock(&cnic_lock);
2357
2358                 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2359                         ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2360
2361                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2362         }
2363 }
2364
2365 static void cnic_ulp_start(struct cnic_dev *dev)
2366 {
2367         struct cnic_local *cp = dev->cnic_priv;
2368         int if_type;
2369
2370         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2371                 struct cnic_ulp_ops *ulp_ops;
2372
2373                 mutex_lock(&cnic_lock);
2374                 ulp_ops = cp->ulp_ops[if_type];
2375                 if (!ulp_ops || !ulp_ops->cnic_start) {
2376                         mutex_unlock(&cnic_lock);
2377                         continue;
2378                 }
2379                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2380                 mutex_unlock(&cnic_lock);
2381
2382                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2383                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2384
2385                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2386         }
2387 }
2388
2389 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
2390 {
2391         struct cnic_dev *dev = data;
2392
2393         switch (info->cmd) {
2394         case CNIC_CTL_STOP_CMD:
2395                 cnic_hold(dev);
2396
2397                 cnic_ulp_stop(dev);
2398                 cnic_stop_hw(dev);
2399
2400                 cnic_put(dev);
2401                 break;
2402         case CNIC_CTL_START_CMD:
2403                 cnic_hold(dev);
2404
2405                 if (!cnic_start_hw(dev))
2406                         cnic_ulp_start(dev);
2407
2408                 cnic_put(dev);
2409                 break;
2410         case CNIC_CTL_COMPLETION_CMD: {
2411                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
2412                 u32 l5_cid;
2413                 struct cnic_local *cp = dev->cnic_priv;
2414
2415                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
2416                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2417
2418                         ctx->wait_cond = 1;
2419                         wake_up(&ctx->waitq);
2420                 }
2421                 break;
2422         }
2423         default:
2424                 return -EINVAL;
2425         }
2426         return 0;
2427 }
2428
2429 static void cnic_ulp_init(struct cnic_dev *dev)
2430 {
2431         int i;
2432         struct cnic_local *cp = dev->cnic_priv;
2433
2434         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2435                 struct cnic_ulp_ops *ulp_ops;
2436
2437                 mutex_lock(&cnic_lock);
2438                 ulp_ops = cnic_ulp_tbl[i];
2439                 if (!ulp_ops || !ulp_ops->cnic_init) {
2440                         mutex_unlock(&cnic_lock);
2441                         continue;
2442                 }
2443                 ulp_get(ulp_ops);
2444                 mutex_unlock(&cnic_lock);
2445
2446                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2447                         ulp_ops->cnic_init(dev);
2448
2449                 ulp_put(ulp_ops);
2450         }
2451 }
2452
2453 static void cnic_ulp_exit(struct cnic_dev *dev)
2454 {
2455         int i;
2456         struct cnic_local *cp = dev->cnic_priv;
2457
2458         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2459                 struct cnic_ulp_ops *ulp_ops;
2460
2461                 mutex_lock(&cnic_lock);
2462                 ulp_ops = cnic_ulp_tbl[i];
2463                 if (!ulp_ops || !ulp_ops->cnic_exit) {
2464                         mutex_unlock(&cnic_lock);
2465                         continue;
2466                 }
2467                 ulp_get(ulp_ops);
2468                 mutex_unlock(&cnic_lock);
2469
2470                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2471                         ulp_ops->cnic_exit(dev);
2472
2473                 ulp_put(ulp_ops);
2474         }
2475 }
2476
2477 static int cnic_cm_offload_pg(struct cnic_sock *csk)
2478 {
2479         struct cnic_dev *dev = csk->dev;
2480         struct l4_kwq_offload_pg *l4kwqe;
2481         struct kwqe *wqes[1];
2482
2483         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
2484         memset(l4kwqe, 0, sizeof(*l4kwqe));
2485         wqes[0] = (struct kwqe *) l4kwqe;
2486
2487         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
2488         l4kwqe->flags =
2489                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
2490         l4kwqe->l2hdr_nbytes = ETH_HLEN;
2491
2492         l4kwqe->da0 = csk->ha[0];
2493         l4kwqe->da1 = csk->ha[1];
2494         l4kwqe->da2 = csk->ha[2];
2495         l4kwqe->da3 = csk->ha[3];
2496         l4kwqe->da4 = csk->ha[4];
2497         l4kwqe->da5 = csk->ha[5];
2498
2499         l4kwqe->sa0 = dev->mac_addr[0];
2500         l4kwqe->sa1 = dev->mac_addr[1];
2501         l4kwqe->sa2 = dev->mac_addr[2];
2502         l4kwqe->sa3 = dev->mac_addr[3];
2503         l4kwqe->sa4 = dev->mac_addr[4];
2504         l4kwqe->sa5 = dev->mac_addr[5];
2505
2506         l4kwqe->etype = ETH_P_IP;
2507         l4kwqe->ipid_count = DEF_IPID_COUNT;
2508         l4kwqe->host_opaque = csk->l5_cid;
2509
2510         if (csk->vlan_id) {
2511                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
2512                 l4kwqe->vlan_tag = csk->vlan_id;
2513                 l4kwqe->l2hdr_nbytes += 4;
2514         }
2515
2516         return dev->submit_kwqes(dev, wqes, 1);
2517 }
2518
2519 static int cnic_cm_update_pg(struct cnic_sock *csk)
2520 {
2521         struct cnic_dev *dev = csk->dev;
2522         struct l4_kwq_update_pg *l4kwqe;
2523         struct kwqe *wqes[1];
2524
2525         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
2526         memset(l4kwqe, 0, sizeof(*l4kwqe));
2527         wqes[0] = (struct kwqe *) l4kwqe;
2528
2529         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
2530         l4kwqe->flags =
2531                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
2532         l4kwqe->pg_cid = csk->pg_cid;
2533
2534         l4kwqe->da0 = csk->ha[0];
2535         l4kwqe->da1 = csk->ha[1];
2536         l4kwqe->da2 = csk->ha[2];
2537         l4kwqe->da3 = csk->ha[3];
2538         l4kwqe->da4 = csk->ha[4];
2539         l4kwqe->da5 = csk->ha[5];
2540
2541         l4kwqe->pg_host_opaque = csk->l5_cid;
2542         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
2543
2544         return dev->submit_kwqes(dev, wqes, 1);
2545 }
2546
2547 static int cnic_cm_upload_pg(struct cnic_sock *csk)
2548 {
2549         struct cnic_dev *dev = csk->dev;
2550         struct l4_kwq_upload *l4kwqe;
2551         struct kwqe *wqes[1];
2552
2553         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
2554         memset(l4kwqe, 0, sizeof(*l4kwqe));
2555         wqes[0] = (struct kwqe *) l4kwqe;
2556
2557         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
2558         l4kwqe->flags =
2559                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
2560         l4kwqe->cid = csk->pg_cid;
2561
2562         return dev->submit_kwqes(dev, wqes, 1);
2563 }
2564
2565 static int cnic_cm_conn_req(struct cnic_sock *csk)
2566 {
2567         struct cnic_dev *dev = csk->dev;
2568         struct l4_kwq_connect_req1 *l4kwqe1;
2569         struct l4_kwq_connect_req2 *l4kwqe2;
2570         struct l4_kwq_connect_req3 *l4kwqe3;
2571         struct kwqe *wqes[3];
2572         u8 tcp_flags = 0;
2573         int num_wqes = 2;
2574
2575         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
2576         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
2577         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
2578         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
2579         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
2580         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
2581
2582         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
2583         l4kwqe3->flags =
2584                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
2585         l4kwqe3->ka_timeout = csk->ka_timeout;
2586         l4kwqe3->ka_interval = csk->ka_interval;
2587         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
2588         l4kwqe3->tos = csk->tos;
2589         l4kwqe3->ttl = csk->ttl;
2590         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
2591         l4kwqe3->pmtu = csk->mtu;
2592         l4kwqe3->rcv_buf = csk->rcv_buf;
2593         l4kwqe3->snd_buf = csk->snd_buf;
2594         l4kwqe3->seed = csk->seed;
2595
2596         wqes[0] = (struct kwqe *) l4kwqe1;
2597         if (test_bit(SK_F_IPV6, &csk->flags)) {
2598                 wqes[1] = (struct kwqe *) l4kwqe2;
2599                 wqes[2] = (struct kwqe *) l4kwqe3;
2600                 num_wqes = 3;
2601
2602                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
2603                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
2604                 l4kwqe2->flags =
2605                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
2606                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
2607                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
2608                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
2609                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
2610                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
2611                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
2612                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
2613                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
2614                                sizeof(struct tcphdr);
2615         } else {
2616                 wqes[1] = (struct kwqe *) l4kwqe3;
2617                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
2618                                sizeof(struct tcphdr);
2619         }
2620
2621         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
2622         l4kwqe1->flags =
2623                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
2624                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
2625         l4kwqe1->cid = csk->cid;
2626         l4kwqe1->pg_cid = csk->pg_cid;
2627         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
2628         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
2629         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
2630         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
2631         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
2632                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
2633         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
2634                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
2635         if (csk->tcp_flags & SK_TCP_NAGLE)
2636                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
2637         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
2638                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
2639         if (csk->tcp_flags & SK_TCP_SACK)
2640                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
2641         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
2642                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
2643
2644         l4kwqe1->tcp_flags = tcp_flags;
2645
2646         return dev->submit_kwqes(dev, wqes, num_wqes);
2647 }
2648
2649 static int cnic_cm_close_req(struct cnic_sock *csk)
2650 {
2651         struct cnic_dev *dev = csk->dev;
2652         struct l4_kwq_close_req *l4kwqe;
2653         struct kwqe *wqes[1];
2654
2655         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
2656         memset(l4kwqe, 0, sizeof(*l4kwqe));
2657         wqes[0] = (struct kwqe *) l4kwqe;
2658
2659         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
2660         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
2661         l4kwqe->cid = csk->cid;
2662
2663         return dev->submit_kwqes(dev, wqes, 1);
2664 }
2665
2666 static int cnic_cm_abort_req(struct cnic_sock *csk)
2667 {
2668         struct cnic_dev *dev = csk->dev;
2669         struct l4_kwq_reset_req *l4kwqe;
2670         struct kwqe *wqes[1];
2671
2672         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
2673         memset(l4kwqe, 0, sizeof(*l4kwqe));
2674         wqes[0] = (struct kwqe *) l4kwqe;
2675
2676         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
2677         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
2678         l4kwqe->cid = csk->cid;
2679
2680         return dev->submit_kwqes(dev, wqes, 1);
2681 }
2682
2683 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
2684                           u32 l5_cid, struct cnic_sock **csk, void *context)
2685 {
2686         struct cnic_local *cp = dev->cnic_priv;
2687         struct cnic_sock *csk1;
2688
2689         if (l5_cid >= MAX_CM_SK_TBL_SZ)
2690                 return -EINVAL;
2691
2692         csk1 = &cp->csk_tbl[l5_cid];
2693         if (atomic_read(&csk1->ref_count))
2694                 return -EAGAIN;
2695
2696         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
2697                 return -EBUSY;
2698
2699         csk1->dev = dev;
2700         csk1->cid = cid;
2701         csk1->l5_cid = l5_cid;
2702         csk1->ulp_type = ulp_type;
2703         csk1->context = context;
2704
2705         csk1->ka_timeout = DEF_KA_TIMEOUT;
2706         csk1->ka_interval = DEF_KA_INTERVAL;
2707         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
2708         csk1->tos = DEF_TOS;
2709         csk1->ttl = DEF_TTL;
2710         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
2711         csk1->rcv_buf = DEF_RCV_BUF;
2712         csk1->snd_buf = DEF_SND_BUF;
2713         csk1->seed = DEF_SEED;
2714
2715         *csk = csk1;
2716         return 0;
2717 }
2718
2719 static void cnic_cm_cleanup(struct cnic_sock *csk)
2720 {
2721         if (csk->src_port) {
2722                 struct cnic_dev *dev = csk->dev;
2723                 struct cnic_local *cp = dev->cnic_priv;
2724
2725                 cnic_free_id(&cp->csk_port_tbl, csk->src_port);
2726                 csk->src_port = 0;
2727         }
2728 }
2729
2730 static void cnic_close_conn(struct cnic_sock *csk)
2731 {
2732         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
2733                 cnic_cm_upload_pg(csk);
2734                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
2735         }
2736         cnic_cm_cleanup(csk);
2737 }
2738
2739 static int cnic_cm_destroy(struct cnic_sock *csk)
2740 {
2741         if (!cnic_in_use(csk))
2742                 return -EINVAL;
2743
2744         csk_hold(csk);
2745         clear_bit(SK_F_INUSE, &csk->flags);
2746         smp_mb__after_clear_bit();
2747         while (atomic_read(&csk->ref_count) != 1)
2748                 msleep(1);
2749         cnic_cm_cleanup(csk);
2750
2751         csk->flags = 0;
2752         csk_put(csk);
2753         return 0;
2754 }
2755
2756 static inline u16 cnic_get_vlan(struct net_device *dev,
2757                                 struct net_device **vlan_dev)
2758 {
2759         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2760                 *vlan_dev = vlan_dev_real_dev(dev);
2761                 return vlan_dev_vlan_id(dev);
2762         }
2763         *vlan_dev = dev;
2764         return 0;
2765 }
2766
2767 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
2768                              struct dst_entry **dst)
2769 {
2770 #if defined(CONFIG_INET)
2771         struct flowi fl;
2772         int err;
2773         struct rtable *rt;
2774
2775         memset(&fl, 0, sizeof(fl));
2776         fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
2777
2778         err = ip_route_output_key(&init_net, &rt, &fl);
2779         if (!err)
2780                 *dst = &rt->u.dst;
2781         return err;
2782 #else
2783         return -ENETUNREACH;
2784 #endif
2785 }
2786
2787 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
2788                              struct dst_entry **dst)
2789 {
2790 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2791         struct flowi fl;
2792
2793         memset(&fl, 0, sizeof(fl));
2794         ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
2795         if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
2796                 fl.oif = dst_addr->sin6_scope_id;
2797
2798         *dst = ip6_route_output(&init_net, NULL, &fl);
2799         if (*dst)
2800                 return 0;
2801 #endif
2802
2803         return -ENETUNREACH;
2804 }
2805
2806 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
2807                                            int ulp_type)
2808 {
2809         struct cnic_dev *dev = NULL;
2810         struct dst_entry *dst;
2811         struct net_device *netdev = NULL;
2812         int err = -ENETUNREACH;
2813
2814         if (dst_addr->sin_family == AF_INET)
2815                 err = cnic_get_v4_route(dst_addr, &dst);
2816         else if (dst_addr->sin_family == AF_INET6) {
2817                 struct sockaddr_in6 *dst_addr6 =
2818                         (struct sockaddr_in6 *) dst_addr;
2819
2820                 err = cnic_get_v6_route(dst_addr6, &dst);
2821         } else
2822                 return NULL;
2823
2824         if (err)
2825                 return NULL;
2826
2827         if (!dst->dev)
2828                 goto done;
2829
2830         cnic_get_vlan(dst->dev, &netdev);
2831
2832         dev = cnic_from_netdev(netdev);
2833
2834 done:
2835         dst_release(dst);
2836         if (dev)
2837                 cnic_put(dev);
2838         return dev;
2839 }
2840
2841 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2842 {
2843         struct cnic_dev *dev = csk->dev;
2844         struct cnic_local *cp = dev->cnic_priv;
2845
2846         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
2847 }
2848
2849 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2850 {
2851         struct cnic_dev *dev = csk->dev;
2852         struct cnic_local *cp = dev->cnic_priv;
2853         int is_v6, err, rc = -ENETUNREACH;
2854         struct dst_entry *dst;
2855         struct net_device *realdev;
2856         u32 local_port;
2857
2858         if (saddr->local.v6.sin6_family == AF_INET6 &&
2859             saddr->remote.v6.sin6_family == AF_INET6)
2860                 is_v6 = 1;
2861         else if (saddr->local.v4.sin_family == AF_INET &&
2862                  saddr->remote.v4.sin_family == AF_INET)
2863                 is_v6 = 0;
2864         else
2865                 return -EINVAL;
2866
2867         clear_bit(SK_F_IPV6, &csk->flags);
2868
2869         if (is_v6) {
2870 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2871                 set_bit(SK_F_IPV6, &csk->flags);
2872                 err = cnic_get_v6_route(&saddr->remote.v6, &dst);
2873                 if (err)
2874                         return err;
2875
2876                 if (!dst || dst->error || !dst->dev)
2877                         goto err_out;
2878
2879                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
2880                        sizeof(struct in6_addr));
2881                 csk->dst_port = saddr->remote.v6.sin6_port;
2882                 local_port = saddr->local.v6.sin6_port;
2883 #else
2884                 return rc;
2885 #endif
2886
2887         } else {
2888                 err = cnic_get_v4_route(&saddr->remote.v4, &dst);
2889                 if (err)
2890                         return err;
2891
2892                 if (!dst || dst->error || !dst->dev)
2893                         goto err_out;
2894
2895                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
2896                 csk->dst_port = saddr->remote.v4.sin_port;
2897                 local_port = saddr->local.v4.sin_port;
2898         }
2899
2900         csk->vlan_id = cnic_get_vlan(dst->dev, &realdev);
2901         if (realdev != dev->netdev)
2902                 goto err_out;
2903
2904         if (local_port >= CNIC_LOCAL_PORT_MIN &&
2905             local_port < CNIC_LOCAL_PORT_MAX) {
2906                 if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
2907                         local_port = 0;
2908         } else
2909                 local_port = 0;
2910
2911         if (!local_port) {
2912                 local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
2913                 if (local_port == -1) {
2914                         rc = -ENOMEM;
2915                         goto err_out;
2916                 }
2917         }
2918         csk->src_port = local_port;
2919
2920         csk->mtu = dst_mtu(dst);
2921         rc = 0;
2922
2923 err_out:
2924         dst_release(dst);
2925         return rc;
2926 }
2927
2928 static void cnic_init_csk_state(struct cnic_sock *csk)
2929 {
2930         csk->state = 0;
2931         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
2932         clear_bit(SK_F_CLOSING, &csk->flags);
2933 }
2934
2935 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2936 {
2937         int err = 0;
2938
2939         if (!cnic_in_use(csk))
2940                 return -EINVAL;
2941
2942         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
2943                 return -EINVAL;
2944
2945         cnic_init_csk_state(csk);
2946
2947         err = cnic_get_route(csk, saddr);
2948         if (err)
2949                 goto err_out;
2950
2951         err = cnic_resolve_addr(csk, saddr);
2952         if (!err)
2953                 return 0;
2954
2955 err_out:
2956         clear_bit(SK_F_CONNECT_START, &csk->flags);
2957         return err;
2958 }
2959
2960 static int cnic_cm_abort(struct cnic_sock *csk)
2961 {
2962         struct cnic_local *cp = csk->dev->cnic_priv;
2963         u32 opcode;
2964
2965         if (!cnic_in_use(csk))
2966                 return -EINVAL;
2967
2968         if (cnic_abort_prep(csk))
2969                 return cnic_cm_abort_req(csk);
2970
2971         /* Getting here means that we haven't started connect, or
2972          * connect was not successful.
2973          */
2974
2975         csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2976         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
2977                 opcode = csk->state;
2978         else
2979                 opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
2980         cp->close_conn(csk, opcode);
2981
2982         return 0;
2983 }
2984
2985 static int cnic_cm_close(struct cnic_sock *csk)
2986 {
2987         if (!cnic_in_use(csk))
2988                 return -EINVAL;
2989
2990         if (cnic_close_prep(csk)) {
2991                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2992                 return cnic_cm_close_req(csk);
2993         }
2994         return 0;
2995 }
2996
2997 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
2998                            u8 opcode)
2999 {
3000         struct cnic_ulp_ops *ulp_ops;
3001         int ulp_type = csk->ulp_type;
3002
3003         rcu_read_lock();
3004         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3005         if (ulp_ops) {
3006                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3007                         ulp_ops->cm_connect_complete(csk);
3008                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3009                         ulp_ops->cm_close_complete(csk);
3010                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3011                         ulp_ops->cm_remote_abort(csk);
3012                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3013                         ulp_ops->cm_abort_complete(csk);
3014                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3015                         ulp_ops->cm_remote_close(csk);
3016         }
3017         rcu_read_unlock();
3018 }
3019
3020 static int cnic_cm_set_pg(struct cnic_sock *csk)
3021 {
3022         if (cnic_offld_prep(csk)) {
3023                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3024                         cnic_cm_update_pg(csk);
3025                 else
3026                         cnic_cm_offload_pg(csk);
3027         }
3028         return 0;
3029 }
3030
3031 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3032 {
3033         struct cnic_local *cp = dev->cnic_priv;
3034         u32 l5_cid = kcqe->pg_host_opaque;
3035         u8 opcode = kcqe->op_code;
3036         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3037
3038         csk_hold(csk);
3039         if (!cnic_in_use(csk))
3040                 goto done;
3041
3042         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3043                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3044                 goto done;
3045         }
3046         csk->pg_cid = kcqe->pg_cid;
3047         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3048         cnic_cm_conn_req(csk);
3049
3050 done:
3051         csk_put(csk);
3052 }
3053
3054 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3055 {
3056         struct cnic_local *cp = dev->cnic_priv;
3057         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3058         u8 opcode = l4kcqe->op_code;
3059         u32 l5_cid;
3060         struct cnic_sock *csk;
3061
3062         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3063             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3064                 cnic_cm_process_offld_pg(dev, l4kcqe);
3065                 return;
3066         }
3067
3068         l5_cid = l4kcqe->conn_id;
3069         if (opcode & 0x80)
3070                 l5_cid = l4kcqe->cid;
3071         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3072                 return;
3073
3074         csk = &cp->csk_tbl[l5_cid];
3075         csk_hold(csk);
3076
3077         if (!cnic_in_use(csk)) {
3078                 csk_put(csk);
3079                 return;
3080         }
3081
3082         switch (opcode) {
3083         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3084                 if (l4kcqe->status == 0)
3085                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3086
3087                 smp_mb__before_clear_bit();
3088                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3089                 cnic_cm_upcall(cp, csk, opcode);
3090                 break;
3091
3092         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3093                 if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags))
3094                         csk->state = opcode;
3095                 /* fall through */
3096         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3097         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3098         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3099         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3100                 cp->close_conn(csk, opcode);
3101                 break;
3102
3103         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3104                 cnic_cm_upcall(cp, csk, opcode);
3105                 break;
3106         }
3107         csk_put(csk);
3108 }
3109
3110 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3111 {
3112         struct cnic_dev *dev = data;
3113         int i;
3114
3115         for (i = 0; i < num; i++)
3116                 cnic_cm_process_kcqe(dev, kcqe[i]);
3117 }
3118
3119 static struct cnic_ulp_ops cm_ulp_ops = {
3120         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3121 };
3122
3123 static void cnic_cm_free_mem(struct cnic_dev *dev)
3124 {
3125         struct cnic_local *cp = dev->cnic_priv;
3126
3127         kfree(cp->csk_tbl);
3128         cp->csk_tbl = NULL;
3129         cnic_free_id_tbl(&cp->csk_port_tbl);
3130 }
3131
3132 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3133 {
3134         struct cnic_local *cp = dev->cnic_priv;
3135
3136         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3137                               GFP_KERNEL);
3138         if (!cp->csk_tbl)
3139                 return -ENOMEM;
3140
3141         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3142                              CNIC_LOCAL_PORT_MIN)) {
3143                 cnic_cm_free_mem(dev);
3144                 return -ENOMEM;
3145         }
3146         return 0;
3147 }
3148
3149 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3150 {
3151         if ((opcode == csk->state) ||
3152             (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED &&
3153              csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) {
3154                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags))
3155                         return 1;
3156         }
3157         return 0;
3158 }
3159
3160 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3161 {
3162         struct cnic_dev *dev = csk->dev;
3163         struct cnic_local *cp = dev->cnic_priv;
3164
3165         clear_bit(SK_F_CONNECT_START, &csk->flags);
3166         if (cnic_ready_to_close(csk, opcode)) {
3167                 cnic_close_conn(csk);
3168                 cnic_cm_upcall(cp, csk, opcode);
3169         }
3170 }
3171
3172 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3173 {
3174 }
3175
3176 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3177 {
3178         u32 seed;
3179
3180         get_random_bytes(&seed, 4);
3181         cnic_ctx_wr(dev, 45, 0, seed);
3182         return 0;
3183 }
3184
3185 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3186 {
3187         struct cnic_dev *dev = csk->dev;
3188         struct cnic_local *cp = dev->cnic_priv;
3189         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3190         union l5cm_specific_data l5_data;
3191         u32 cmd = 0;
3192         int close_complete = 0;
3193
3194         switch (opcode) {
3195         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3196         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3197         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3198                 if (cnic_ready_to_close(csk, opcode))
3199                         cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3200                 break;
3201         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3202                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3203                 break;
3204         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3205                 close_complete = 1;
3206                 break;
3207         }
3208         if (cmd) {
3209                 memset(&l5_data, 0, sizeof(l5_data));
3210
3211                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3212                                     &l5_data);
3213         } else if (close_complete) {
3214                 ctx->timestamp = jiffies;
3215                 cnic_close_conn(csk);
3216                 cnic_cm_upcall(cp, csk, csk->state);
3217         }
3218 }
3219
3220 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3221 {
3222 }
3223
3224 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3225 {
3226         struct cnic_local *cp = dev->cnic_priv;
3227         int func = CNIC_FUNC(cp);
3228
3229         cnic_init_bnx2x_mac(dev);
3230         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3231
3232         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3233                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(func), 0);
3234
3235         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3236                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(func), 1);
3237         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3238                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(func),
3239                 DEF_MAX_DA_COUNT);
3240
3241         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3242                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(func), DEF_TTL);
3243         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3244                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(func), DEF_TOS);
3245         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3246                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(func), 2);
3247         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3248                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(func), DEF_SWS_TIMER);
3249
3250         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(func),
3251                 DEF_MAX_CWND);
3252         return 0;
3253 }
3254
3255 static int cnic_cm_open(struct cnic_dev *dev)
3256 {
3257         struct cnic_local *cp = dev->cnic_priv;
3258         int err;
3259
3260         err = cnic_cm_alloc_mem(dev);
3261         if (err)
3262                 return err;
3263
3264         err = cp->start_cm(dev);
3265
3266         if (err)
3267                 goto err_out;
3268
3269         dev->cm_create = cnic_cm_create;
3270         dev->cm_destroy = cnic_cm_destroy;
3271         dev->cm_connect = cnic_cm_connect;
3272         dev->cm_abort = cnic_cm_abort;
3273         dev->cm_close = cnic_cm_close;
3274         dev->cm_select_dev = cnic_cm_select_dev;
3275
3276         cp->ulp_handle[CNIC_ULP_L4] = dev;
3277         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
3278         return 0;
3279
3280 err_out:
3281         cnic_cm_free_mem(dev);
3282         return err;
3283 }
3284
3285 static int cnic_cm_shutdown(struct cnic_dev *dev)
3286 {
3287         struct cnic_local *cp = dev->cnic_priv;
3288         int i;
3289
3290         cp->stop_cm(dev);
3291
3292         if (!cp->csk_tbl)
3293                 return 0;
3294
3295         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
3296                 struct cnic_sock *csk = &cp->csk_tbl[i];
3297
3298                 clear_bit(SK_F_INUSE, &csk->flags);
3299                 cnic_cm_cleanup(csk);
3300         }
3301         cnic_cm_free_mem(dev);
3302
3303         return 0;
3304 }
3305
3306 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
3307 {
3308         struct cnic_local *cp = dev->cnic_priv;
3309         u32 cid_addr;
3310         int i;
3311
3312         if (CHIP_NUM(cp) == CHIP_NUM_5709)
3313                 return;
3314
3315         cid_addr = GET_CID_ADDR(cid);
3316
3317         for (i = 0; i < CTX_SIZE; i += 4)
3318                 cnic_ctx_wr(dev, cid_addr, i, 0);
3319 }
3320
3321 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
3322 {
3323         struct cnic_local *cp = dev->cnic_priv;
3324         int ret = 0, i;
3325         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
3326
3327         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3328                 return 0;
3329
3330         for (i = 0; i < cp->ctx_blks; i++) {
3331                 int j;
3332                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
3333                 u32 val;
3334
3335                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
3336
3337                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
3338                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
3339                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
3340                         (u64) cp->ctx_arr[i].mapping >> 32);
3341                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
3342                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
3343                 for (j = 0; j < 10; j++) {
3344
3345                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
3346                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
3347                                 break;
3348                         udelay(5);
3349                 }
3350                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
3351                         ret = -EBUSY;
3352                         break;
3353                 }
3354         }
3355         return ret;
3356 }
3357
3358 static void cnic_free_irq(struct cnic_dev *dev)
3359 {
3360         struct cnic_local *cp = dev->cnic_priv;
3361         struct cnic_eth_dev *ethdev = cp->ethdev;
3362
3363         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3364                 cp->disable_int_sync(dev);
3365                 tasklet_disable(&cp->cnic_irq_task);
3366                 free_irq(ethdev->irq_arr[0].vector, dev);
3367         }
3368 }
3369
3370 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
3371 {
3372         struct cnic_local *cp = dev->cnic_priv;
3373         struct cnic_eth_dev *ethdev = cp->ethdev;
3374
3375         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3376                 int err, i = 0;
3377                 int sblk_num = cp->status_blk_num;
3378                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
3379                            BNX2_HC_SB_CONFIG_1;
3380
3381                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
3382
3383                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
3384                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
3385                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
3386
3387                 cp->bnx2_status_blk = cp->status_blk;
3388                 cp->last_status_idx = cp->bnx2_status_blk->status_idx;
3389                 tasklet_init(&cp->cnic_irq_task, &cnic_service_bnx2_msix,
3390                              (unsigned long) dev);
3391                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3392                                   "cnic", dev);
3393                 if (err) {
3394                         tasklet_disable(&cp->cnic_irq_task);
3395                         return err;
3396                 }
3397                 while (cp->bnx2_status_blk->status_completion_producer_index &&
3398                        i < 10) {
3399                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
3400                                 1 << (11 + sblk_num));
3401                         udelay(10);
3402                         i++;
3403                         barrier();
3404                 }
3405                 if (cp->bnx2_status_blk->status_completion_producer_index) {
3406                         cnic_free_irq(dev);
3407                         goto failed;
3408                 }
3409
3410         } else {
3411                 struct status_block *sblk = cp->status_blk;
3412                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
3413                 int i = 0;
3414
3415                 while (sblk->status_completion_producer_index && i < 10) {
3416                         CNIC_WR(dev, BNX2_HC_COMMAND,
3417                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
3418                         udelay(10);
3419                         i++;
3420                         barrier();
3421                 }
3422                 if (sblk->status_completion_producer_index)
3423                         goto failed;
3424
3425         }
3426         return 0;
3427
3428 failed:
3429         printk(KERN_ERR PFX "%s: " "KCQ index not resetting to 0.\n",
3430                dev->netdev->name);
3431         return -EBUSY;
3432 }
3433
3434 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
3435 {
3436         struct cnic_local *cp = dev->cnic_priv;
3437         struct cnic_eth_dev *ethdev = cp->ethdev;
3438
3439         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3440                 return;
3441
3442         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3443                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3444 }
3445
3446 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
3447 {
3448         struct cnic_local *cp = dev->cnic_priv;
3449         struct cnic_eth_dev *ethdev = cp->ethdev;
3450
3451         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3452                 return;
3453
3454         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3455                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
3456         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
3457         synchronize_irq(ethdev->irq_arr[0].vector);
3458 }
3459
3460 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
3461 {
3462         struct cnic_local *cp = dev->cnic_priv;
3463         struct cnic_eth_dev *ethdev = cp->ethdev;
3464         u32 cid_addr, tx_cid, sb_id;
3465         u32 val, offset0, offset1, offset2, offset3;
3466         int i;
3467         struct tx_bd *txbd;
3468         dma_addr_t buf_map;
3469         struct status_block *s_blk = cp->status_blk;
3470
3471         sb_id = cp->status_blk_num;
3472         tx_cid = 20;
3473         cnic_init_context(dev, tx_cid);
3474         cnic_init_context(dev, tx_cid + 1);
3475         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
3476         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3477                 struct status_block_msix *sblk = cp->status_blk;
3478
3479                 tx_cid = TX_TSS_CID + sb_id - 1;
3480                 cnic_init_context(dev, tx_cid);
3481                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
3482                         (TX_TSS_CID << 7));
3483                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
3484         }
3485         cp->tx_cons = *cp->tx_cons_ptr;
3486
3487         cid_addr = GET_CID_ADDR(tx_cid);
3488         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
3489                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
3490
3491                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
3492                         cnic_ctx_wr(dev, cid_addr2, i, 0);
3493
3494                 offset0 = BNX2_L2CTX_TYPE_XI;
3495                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
3496                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
3497                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
3498         } else {
3499                 offset0 = BNX2_L2CTX_TYPE;
3500                 offset1 = BNX2_L2CTX_CMD_TYPE;
3501                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
3502                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
3503         }
3504         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
3505         cnic_ctx_wr(dev, cid_addr, offset0, val);
3506
3507         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
3508         cnic_ctx_wr(dev, cid_addr, offset1, val);
3509
3510         txbd = (struct tx_bd *) cp->l2_ring;
3511
3512         buf_map = cp->l2_buf_map;
3513         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
3514                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
3515                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3516         }
3517         val = (u64) cp->l2_ring_map >> 32;
3518         cnic_ctx_wr(dev, cid_addr, offset2, val);
3519         txbd->tx_bd_haddr_hi = val;
3520
3521         val = (u64) cp->l2_ring_map & 0xffffffff;
3522         cnic_ctx_wr(dev, cid_addr, offset3, val);
3523         txbd->tx_bd_haddr_lo = val;
3524 }
3525
3526 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
3527 {
3528         struct cnic_local *cp = dev->cnic_priv;
3529         struct cnic_eth_dev *ethdev = cp->ethdev;
3530         u32 cid_addr, sb_id, val, coal_reg, coal_val;
3531         int i;
3532         struct rx_bd *rxbd;
3533         struct status_block *s_blk = cp->status_blk;
3534
3535         sb_id = cp->status_blk_num;
3536         cnic_init_context(dev, 2);
3537         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
3538         coal_reg = BNX2_HC_COMMAND;
3539         coal_val = CNIC_RD(dev, coal_reg);
3540         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3541                 struct status_block_msix *sblk = cp->status_blk;
3542
3543                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
3544                 coal_reg = BNX2_HC_COALESCE_NOW;
3545                 coal_val = 1 << (11 + sb_id);
3546         }
3547         i = 0;
3548         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
3549                 CNIC_WR(dev, coal_reg, coal_val);
3550                 udelay(10);
3551                 i++;
3552                 barrier();
3553         }
3554         cp->rx_cons = *cp->rx_cons_ptr;
3555
3556         cid_addr = GET_CID_ADDR(2);
3557         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
3558               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
3559         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
3560
3561         if (sb_id == 0)
3562                 val = 2 << BNX2_L2CTX_STATUSB_NUM_SHIFT;
3563         else
3564                 val = BNX2_L2CTX_STATUSB_NUM(sb_id);
3565         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
3566
3567         rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE);
3568         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
3569                 dma_addr_t buf_map;
3570                 int n = (i % cp->l2_rx_ring_size) + 1;
3571
3572                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3573                 rxbd->rx_bd_len = cp->l2_single_buf_size;
3574                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
3575                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
3576                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3577         }
3578         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3579         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
3580         rxbd->rx_bd_haddr_hi = val;
3581
3582         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3583         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
3584         rxbd->rx_bd_haddr_lo = val;
3585
3586         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
3587         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
3588 }
3589
3590 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
3591 {
3592         struct kwqe *wqes[1], l2kwqe;
3593
3594         memset(&l2kwqe, 0, sizeof(l2kwqe));
3595         wqes[0] = &l2kwqe;
3596         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) |
3597                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
3598                                KWQE_OPCODE_SHIFT) | 2;
3599         dev->submit_kwqes(dev, wqes, 1);
3600 }
3601
3602 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
3603 {
3604         struct cnic_local *cp = dev->cnic_priv;
3605         u32 val;
3606
3607         val = cp->func << 2;
3608
3609         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
3610
3611         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3612                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
3613         dev->mac_addr[0] = (u8) (val >> 8);
3614         dev->mac_addr[1] = (u8) val;
3615
3616         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
3617
3618         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3619                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
3620         dev->mac_addr[2] = (u8) (val >> 24);
3621         dev->mac_addr[3] = (u8) (val >> 16);
3622         dev->mac_addr[4] = (u8) (val >> 8);
3623         dev->mac_addr[5] = (u8) val;
3624
3625         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
3626
3627         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
3628         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3629                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
3630
3631         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
3632         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
3633         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
3634 }
3635
3636 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
3637 {
3638         struct cnic_local *cp = dev->cnic_priv;
3639         struct cnic_eth_dev *ethdev = cp->ethdev;
3640         struct status_block *sblk = cp->status_blk;
3641         u32 val;
3642         int err;
3643
3644         cnic_set_bnx2_mac(dev);
3645
3646         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
3647         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
3648         if (BCM_PAGE_BITS > 12)
3649                 val |= (12 - 8)  << 4;
3650         else
3651                 val |= (BCM_PAGE_BITS - 8)  << 4;
3652
3653         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
3654
3655         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
3656         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
3657         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
3658
3659         err = cnic_setup_5709_context(dev, 1);
3660         if (err)
3661                 return err;
3662
3663         cnic_init_context(dev, KWQ_CID);
3664         cnic_init_context(dev, KCQ_CID);
3665
3666         cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
3667         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
3668
3669         cp->max_kwq_idx = MAX_KWQ_IDX;
3670         cp->kwq_prod_idx = 0;
3671         cp->kwq_con_idx = 0;
3672         cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT;
3673
3674         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
3675                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
3676         else
3677                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
3678
3679         /* Initialize the kernel work queue context. */
3680         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3681               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3682         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val);
3683
3684         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
3685         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3686
3687         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
3688         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3689
3690         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
3691         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3692
3693         val = (u32) cp->kwq_info.pgtbl_map;
3694         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3695
3696         cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
3697         cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
3698
3699         cp->kcq_prod_idx = 0;
3700
3701         /* Initialize the kernel complete queue context. */
3702         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3703               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3704         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val);
3705
3706         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
3707         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3708
3709         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
3710         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3711
3712         val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32);
3713         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3714
3715         val = (u32) cp->kcq_info.pgtbl_map;
3716         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3717
3718         cp->int_num = 0;
3719         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3720                 u32 sb_id = cp->status_blk_num;
3721                 u32 sb = BNX2_L2CTX_STATUSB_NUM(sb_id);
3722
3723                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
3724                 cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3725                 cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3726         }
3727
3728         /* Enable Commnad Scheduler notification when we write to the
3729          * host producer index of the kernel contexts. */
3730         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
3731
3732         /* Enable Command Scheduler notification when we write to either
3733          * the Send Queue or Receive Queue producer indexes of the kernel
3734          * bypass contexts. */
3735         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
3736         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
3737
3738         /* Notify COM when the driver post an application buffer. */
3739         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
3740
3741         /* Set the CP and COM doorbells.  These two processors polls the
3742          * doorbell for a non zero value before running.  This must be done
3743          * after setting up the kernel queue contexts. */
3744         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
3745         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
3746
3747         cnic_init_bnx2_tx_ring(dev);
3748         cnic_init_bnx2_rx_ring(dev);
3749
3750         err = cnic_init_bnx2_irq(dev);
3751         if (err) {
3752                 printk(KERN_ERR PFX "%s: cnic_init_irq failed\n",
3753                        dev->netdev->name);
3754                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
3755                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
3756                 return err;
3757         }
3758
3759         return 0;
3760 }
3761
3762 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
3763 {
3764         struct cnic_local *cp = dev->cnic_priv;
3765         struct cnic_eth_dev *ethdev = cp->ethdev;
3766         u32 start_offset = ethdev->ctx_tbl_offset;
3767         int i;
3768
3769         for (i = 0; i < cp->ctx_blks; i++) {
3770                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
3771                 dma_addr_t map = ctx->mapping;
3772
3773                 if (cp->ctx_align) {
3774                         unsigned long mask = cp->ctx_align - 1;
3775
3776                         map = (map + mask) & ~mask;
3777                 }
3778
3779                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
3780         }
3781 }
3782
3783 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
3784 {
3785         struct cnic_local *cp = dev->cnic_priv;
3786         struct cnic_eth_dev *ethdev = cp->ethdev;
3787         int err = 0;
3788
3789         tasklet_init(&cp->cnic_irq_task, &cnic_service_bnx2x_bh,
3790                      (unsigned long) dev);
3791         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3792                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3793                                   "cnic", dev);
3794                 if (err)
3795                         tasklet_disable(&cp->cnic_irq_task);
3796         }
3797         return err;
3798 }
3799
3800 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
3801 {
3802         struct cnic_local *cp = dev->cnic_priv;
3803         u8 sb_id = cp->status_blk_num;
3804         int port = CNIC_PORT(cp);
3805
3806         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
3807                  CSTORM_SB_HC_TIMEOUT_C_OFFSET(port, sb_id,
3808                                                HC_INDEX_C_ISCSI_EQ_CONS),
3809                  64 / 12);
3810         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
3811                   CSTORM_SB_HC_DISABLE_C_OFFSET(port, sb_id,
3812                                                 HC_INDEX_C_ISCSI_EQ_CONS), 0);
3813 }
3814
3815 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
3816 {
3817 }
3818
3819 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev)
3820 {
3821         struct cnic_local *cp = dev->cnic_priv;
3822         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) cp->l2_ring;
3823         struct eth_context *context;
3824         struct regpair context_addr;
3825         dma_addr_t buf_map;
3826         int func = CNIC_FUNC(cp);
3827         int port = CNIC_PORT(cp);
3828         int i;
3829         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3830         u32 val;
3831
3832         memset(txbd, 0, BCM_PAGE_SIZE);
3833
3834         buf_map = cp->l2_buf_map;
3835         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
3836                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
3837                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
3838
3839                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3840                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3841                 reg_bd->addr_hi = start_bd->addr_hi;
3842                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
3843                 start_bd->nbytes = cpu_to_le16(0x10);
3844                 start_bd->nbd = cpu_to_le16(3);
3845                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
3846                 start_bd->general_data = (UNICAST_ADDRESS <<
3847                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
3848                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
3849
3850         }
3851         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 1, &context_addr);
3852
3853         val = (u64) cp->l2_ring_map >> 32;
3854         txbd->next_bd.addr_hi = cpu_to_le32(val);
3855
3856         context->xstorm_st_context.tx_bd_page_base_hi = val;
3857
3858         val = (u64) cp->l2_ring_map & 0xffffffff;
3859         txbd->next_bd.addr_lo = cpu_to_le32(val);
3860
3861         context->xstorm_st_context.tx_bd_page_base_lo = val;
3862
3863         context->cstorm_st_context.sb_index_number =
3864                 HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS;
3865         context->cstorm_st_context.status_block_id = BNX2X_DEF_SB_ID;
3866
3867         context->xstorm_st_context.statistics_data = (cli |
3868                                 XSTORM_ETH_ST_CONTEXT_STATISTICS_ENABLE);
3869
3870         context->xstorm_ag_context.cdu_reserved =
3871                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3872                                         CDU_REGION_NUMBER_XCM_AG,
3873                                         ETH_CONNECTION_TYPE);
3874
3875         /* reset xstorm per client statistics */
3876         val = BAR_XSTRORM_INTMEM +
3877               XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3878         for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
3879                 CNIC_WR(dev, val + i * 4, 0);
3880
3881         cp->tx_cons_ptr =
3882                 &cp->bnx2x_def_status_blk->c_def_status_block.index_values[
3883                         HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS];
3884 }
3885
3886 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev)
3887 {
3888         struct cnic_local *cp = dev->cnic_priv;
3889         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (cp->l2_ring +
3890                                 BCM_PAGE_SIZE);
3891         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
3892                                 (cp->l2_ring + (2 * BCM_PAGE_SIZE));
3893         struct eth_context *context;
3894         struct regpair context_addr;
3895         int i;
3896         int port = CNIC_PORT(cp);
3897         int func = CNIC_FUNC(cp);
3898         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3899         u32 val;
3900         struct tstorm_eth_client_config tstorm_client = {0};
3901
3902         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
3903                 dma_addr_t buf_map;
3904                 int n = (i % cp->l2_rx_ring_size) + 1;
3905
3906                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3907                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3908                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3909         }
3910         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 0, &context_addr);
3911
3912         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3913         rxbd->addr_hi = cpu_to_le32(val);
3914
3915         context->ustorm_st_context.common.bd_page_base_hi = val;
3916
3917         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3918         rxbd->addr_lo = cpu_to_le32(val);
3919
3920         context->ustorm_st_context.common.bd_page_base_lo = val;
3921
3922         context->ustorm_st_context.common.sb_index_numbers =
3923                                                 BNX2X_ISCSI_RX_SB_INDEX_NUM;
3924         context->ustorm_st_context.common.clientId = cli;
3925         context->ustorm_st_context.common.status_block_id = BNX2X_DEF_SB_ID;
3926         context->ustorm_st_context.common.flags =
3927                 USTORM_ETH_ST_CONTEXT_CONFIG_ENABLE_STATISTICS;
3928         context->ustorm_st_context.common.statistics_counter_id = cli;
3929         context->ustorm_st_context.common.mc_alignment_log_size = 0;
3930         context->ustorm_st_context.common.bd_buff_size =
3931                                                 cp->l2_single_buf_size;
3932
3933         context->ustorm_ag_context.cdu_usage =
3934                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3935                                         CDU_REGION_NUMBER_UCM_AG,
3936                                         ETH_CONNECTION_TYPE);
3937
3938         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
3939         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
3940         rxcqe->addr_hi = cpu_to_le32(val);
3941
3942         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3943                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli) + 4, val);
3944
3945         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3946                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli) + 4, val);
3947
3948         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
3949         rxcqe->addr_lo = cpu_to_le32(val);
3950
3951         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3952                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli), val);
3953
3954         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3955                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli), val);
3956
3957         /* client tstorm info */
3958         tstorm_client.mtu = cp->l2_single_buf_size - 14;
3959         tstorm_client.config_flags =
3960                         (TSTORM_ETH_CLIENT_CONFIG_E1HOV_REM_ENABLE |
3961                         TSTORM_ETH_CLIENT_CONFIG_STATSITICS_ENABLE);
3962         tstorm_client.statistics_counter_id = cli;
3963
3964         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
3965                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli),
3966                    ((u32 *)&tstorm_client)[0]);
3967         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
3968                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli) + 4,
3969                    ((u32 *)&tstorm_client)[1]);
3970
3971         /* reset tstorm per client statistics */
3972         val = BAR_TSTRORM_INTMEM +
3973               TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3974         for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
3975                 CNIC_WR(dev, val + i * 4, 0);
3976
3977         /* reset ustorm per client statistics */
3978         val = BAR_USTRORM_INTMEM +
3979               USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3980         for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
3981                 CNIC_WR(dev, val + i * 4, 0);
3982
3983         cp->rx_cons_ptr =
3984                 &cp->bnx2x_def_status_blk->u_def_status_block.index_values[
3985                         HC_INDEX_DEF_U_ETH_ISCSI_RX_CQ_CONS];
3986 }
3987
3988 static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
3989 {
3990         struct cnic_local *cp = dev->cnic_priv;
3991         u32 base, addr, val;
3992         int port = CNIC_PORT(cp);
3993
3994         dev->max_iscsi_conn = 0;
3995         base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
3996         if (base < 0xa0000 || base >= 0xc0000)
3997                 return;
3998
3999         val = BNX2X_SHMEM_ADDR(base,
4000                 dev_info.port_hw_config[port].iscsi_mac_upper);
4001
4002         dev->mac_addr[0] = (u8) (val >> 8);
4003         dev->mac_addr[1] = (u8) val;
4004
4005         val = BNX2X_SHMEM_ADDR(base,
4006                 dev_info.port_hw_config[port].iscsi_mac_lower);
4007
4008         dev->mac_addr[2] = (u8) (val >> 24);
4009         dev->mac_addr[3] = (u8) (val >> 16);
4010         dev->mac_addr[4] = (u8) (val >> 8);
4011         dev->mac_addr[5] = (u8) val;
4012
4013         addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
4014         val = CNIC_RD(dev, addr);
4015
4016         if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
4017                 u16 val16;
4018
4019                 addr = BNX2X_SHMEM_ADDR(base,
4020                                 drv_lic_key[port].max_iscsi_init_conn);
4021                 val16 = CNIC_RD16(dev, addr);
4022
4023                 if (val16)
4024                         val16 ^= 0x1e1e;
4025                 dev->max_iscsi_conn = val16;
4026         }
4027         if (BNX2X_CHIP_IS_E1H(cp->chip_id)) {
4028                 int func = CNIC_FUNC(cp);
4029
4030                 addr = BNX2X_SHMEM_ADDR(base,
4031                                 mf_cfg.func_mf_config[func].e1hov_tag);
4032                 val = CNIC_RD(dev, addr);
4033                 val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
4034                 if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
4035                         addr = BNX2X_SHMEM_ADDR(base,
4036                                 mf_cfg.func_mf_config[func].config);
4037                         val = CNIC_RD(dev, addr);
4038                         val &= FUNC_MF_CFG_PROTOCOL_MASK;
4039                         if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
4040                                 dev->max_iscsi_conn = 0;
4041                 }
4042         }
4043 }
4044
4045 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4046 {
4047         struct cnic_local *cp = dev->cnic_priv;
4048         int func = CNIC_FUNC(cp), ret, i;
4049         int port = CNIC_PORT(cp);
4050         u16 eq_idx;
4051         u8 sb_id = cp->status_blk_num;
4052
4053         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4054                                BNX2X_ISCSI_START_CID);
4055
4056         if (ret)
4057                 return -ENOMEM;
4058
4059         cp->kcq_io_addr = BAR_CSTRORM_INTMEM +
4060                           CSTORM_ISCSI_EQ_PROD_OFFSET(func, 0);
4061         cp->kcq_prod_idx = 0;
4062
4063         cnic_get_bnx2x_iscsi_info(dev);
4064
4065         /* Only 1 EQ */
4066         CNIC_WR16(dev, cp->kcq_io_addr, MAX_KCQ_IDX);
4067         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4068                 CSTORM_ISCSI_EQ_CONS_OFFSET(func, 0), 0);
4069         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4070                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0),
4071                 cp->kcq_info.pg_map_arr[1] & 0xffffffff);
4072         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4073                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0) + 4,
4074                 (u64) cp->kcq_info.pg_map_arr[1] >> 32);
4075         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4076                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0),
4077                 cp->kcq_info.pg_map_arr[0] & 0xffffffff);
4078         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4079                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0) + 4,
4080                 (u64) cp->kcq_info.pg_map_arr[0] >> 32);
4081         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4082                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(func, 0), 1);
4083         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4084                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(func, 0), cp->status_blk_num);
4085         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4086                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(func, 0),
4087                 HC_INDEX_C_ISCSI_EQ_CONS);
4088
4089         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4090                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4091                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i),
4092                         cp->conn_buf_info.pgtbl[2 * i]);
4093                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4094                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i) + 4,
4095                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4096         }
4097
4098         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4099                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func),
4100                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4101         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4102                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func) + 4,
4103                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4104
4105         cnic_setup_bnx2x_context(dev);
4106
4107         eq_idx = CNIC_RD16(dev, BAR_CSTRORM_INTMEM +
4108                            CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4109                            offsetof(struct cstorm_status_block_c,
4110                                     index_values[HC_INDEX_C_ISCSI_EQ_CONS]));
4111         if (eq_idx != 0) {
4112                 printk(KERN_ERR PFX "%s: EQ cons index %x != 0\n",
4113                        dev->netdev->name, eq_idx);
4114                 return -EBUSY;
4115         }
4116         ret = cnic_init_bnx2x_irq(dev);
4117         if (ret)
4118                 return ret;
4119
4120         cnic_init_bnx2x_tx_ring(dev);
4121         cnic_init_bnx2x_rx_ring(dev);
4122
4123         return 0;
4124 }
4125
4126 static void cnic_init_rings(struct cnic_dev *dev)
4127 {
4128         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4129                 cnic_init_bnx2_tx_ring(dev);
4130                 cnic_init_bnx2_rx_ring(dev);
4131         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4132                 struct cnic_local *cp = dev->cnic_priv;
4133                 struct cnic_eth_dev *ethdev = cp->ethdev;
4134                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4135                 union l5cm_specific_data l5_data;
4136                 struct ustorm_eth_rx_producers rx_prods = {0};
4137                 void __iomem *doorbell;
4138                 int i;
4139
4140                 rx_prods.bd_prod = 0;
4141                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4142                 barrier();
4143
4144                 doorbell = ethdev->io_base2 + BAR_USTRORM_INTMEM +
4145                         USTORM_RX_PRODS_OFFSET(CNIC_PORT(cp), cli);
4146
4147                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4148                         writel(((u32 *) &rx_prods)[i], doorbell + i * 4);
4149
4150                 cnic_init_bnx2x_tx_ring(dev);
4151                 cnic_init_bnx2x_rx_ring(dev);
4152
4153                 l5_data.phy_address.lo = cli;
4154                 l5_data.phy_address.hi = 0;
4155                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4156                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4157                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
4158         }
4159 }
4160
4161 static void cnic_shutdown_rings(struct cnic_dev *dev)
4162 {
4163         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4164                 cnic_shutdown_bnx2_rx_ring(dev);
4165         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4166                 struct cnic_local *cp = dev->cnic_priv;
4167                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4168
4169                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0);
4170         }
4171 }
4172
4173 static int cnic_register_netdev(struct cnic_dev *dev)
4174 {
4175         struct cnic_local *cp = dev->cnic_priv;
4176         struct cnic_eth_dev *ethdev = cp->ethdev;
4177         int err;
4178
4179         if (!ethdev)
4180                 return -ENODEV;
4181
4182         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
4183                 return 0;
4184
4185         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4186         if (err)
4187                 printk(KERN_ERR PFX "%s: register_cnic failed\n",
4188                        dev->netdev->name);
4189
4190         return err;
4191 }
4192
4193 static void cnic_unregister_netdev(struct cnic_dev *dev)
4194 {
4195         struct cnic_local *cp = dev->cnic_priv;
4196         struct cnic_eth_dev *ethdev = cp->ethdev;
4197
4198         if (!ethdev)
4199                 return;
4200
4201         ethdev->drv_unregister_cnic(dev->netdev);
4202 }
4203
4204 static int cnic_start_hw(struct cnic_dev *dev)
4205 {
4206         struct cnic_local *cp = dev->cnic_priv;
4207         struct cnic_eth_dev *ethdev = cp->ethdev;
4208         int err;
4209
4210         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
4211                 return -EALREADY;
4212
4213         dev->regview = ethdev->io_base;
4214         cp->chip_id = ethdev->chip_id;
4215         pci_dev_get(dev->pcidev);
4216         cp->func = PCI_FUNC(dev->pcidev->devfn);
4217         cp->status_blk = ethdev->irq_arr[0].status_blk;
4218         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
4219
4220         err = cp->alloc_resc(dev);
4221         if (err) {
4222                 printk(KERN_ERR PFX "%s: allocate resource failure\n",
4223                        dev->netdev->name);
4224                 goto err1;
4225         }
4226
4227         err = cp->start_hw(dev);
4228         if (err)
4229                 goto err1;
4230
4231         err = cnic_cm_open(dev);
4232         if (err)
4233                 goto err1;
4234
4235         set_bit(CNIC_F_CNIC_UP, &dev->flags);
4236
4237         cp->enable_int(dev);
4238
4239         return 0;
4240
4241 err1:
4242         cp->free_resc(dev);
4243         pci_dev_put(dev->pcidev);
4244         return err;
4245 }
4246
4247 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
4248 {
4249         cnic_disable_bnx2_int_sync(dev);
4250
4251         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4252         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4253
4254         cnic_init_context(dev, KWQ_CID);
4255         cnic_init_context(dev, KCQ_CID);
4256
4257         cnic_setup_5709_context(dev, 0);
4258         cnic_free_irq(dev);
4259
4260         cnic_free_resc(dev);
4261 }
4262
4263
4264 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
4265 {
4266         struct cnic_local *cp = dev->cnic_priv;
4267         u8 sb_id = cp->status_blk_num;
4268         int port = CNIC_PORT(cp);
4269
4270         cnic_free_irq(dev);
4271         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4272                   CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4273                   offsetof(struct cstorm_status_block_c,
4274                            index_values[HC_INDEX_C_ISCSI_EQ_CONS]),
4275                   0);
4276         cnic_free_resc(dev);
4277 }
4278
4279 static void cnic_stop_hw(struct cnic_dev *dev)
4280 {
4281         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4282                 struct cnic_local *cp = dev->cnic_priv;
4283
4284                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
4285                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
4286                 synchronize_rcu();
4287                 cnic_cm_shutdown(dev);
4288                 cp->stop_hw(dev);
4289                 pci_dev_put(dev->pcidev);
4290         }
4291 }
4292
4293 static void cnic_free_dev(struct cnic_dev *dev)
4294 {
4295         int i = 0;
4296
4297         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
4298                 msleep(100);
4299                 i++;
4300         }
4301         if (atomic_read(&dev->ref_count) != 0)
4302                 printk(KERN_ERR PFX "%s: Failed waiting for ref count to go"
4303                                     " to zero.\n", dev->netdev->name);
4304
4305         printk(KERN_INFO PFX "Removed CNIC device: %s\n", dev->netdev->name);
4306         dev_put(dev->netdev);
4307         kfree(dev);
4308 }
4309
4310 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
4311                                        struct pci_dev *pdev)
4312 {
4313         struct cnic_dev *cdev;
4314         struct cnic_local *cp;
4315         int alloc_size;
4316
4317         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
4318
4319         cdev = kzalloc(alloc_size , GFP_KERNEL);
4320         if (cdev == NULL) {
4321                 printk(KERN_ERR PFX "%s: allocate dev struct failure\n",
4322                        dev->name);
4323                 return NULL;
4324         }
4325
4326         cdev->netdev = dev;
4327         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
4328         cdev->register_device = cnic_register_device;
4329         cdev->unregister_device = cnic_unregister_device;
4330         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
4331
4332         cp = cdev->cnic_priv;
4333         cp->dev = cdev;
4334         cp->uio_dev = -1;
4335         cp->l2_single_buf_size = 0x400;
4336         cp->l2_rx_ring_size = 3;
4337
4338         spin_lock_init(&cp->cnic_ulp_lock);
4339
4340         printk(KERN_INFO PFX "Added CNIC device: %s\n", dev->name);
4341
4342         return cdev;
4343 }
4344
4345 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
4346 {
4347         struct pci_dev *pdev;
4348         struct cnic_dev *cdev;
4349         struct cnic_local *cp;
4350         struct cnic_eth_dev *ethdev = NULL;
4351         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4352
4353         probe = symbol_get(bnx2_cnic_probe);
4354         if (probe) {
4355                 ethdev = (*probe)(dev);
4356                 symbol_put(bnx2_cnic_probe);
4357         }
4358         if (!ethdev)
4359                 return NULL;
4360
4361         pdev = ethdev->pdev;
4362         if (!pdev)
4363                 return NULL;
4364
4365         dev_hold(dev);
4366         pci_dev_get(pdev);
4367         if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
4368             pdev->device == PCI_DEVICE_ID_NX2_5709S) {
4369                 u8 rev;
4370
4371                 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
4372                 if (rev < 0x10) {
4373                         pci_dev_put(pdev);
4374                         goto cnic_err;
4375                 }
4376         }
4377         pci_dev_put(pdev);
4378
4379         cdev = cnic_alloc_dev(dev, pdev);
4380         if (cdev == NULL)
4381                 goto cnic_err;
4382
4383         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
4384         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
4385
4386         cp = cdev->cnic_priv;
4387         cp->ethdev = ethdev;
4388         cdev->pcidev = pdev;
4389
4390         cp->cnic_ops = &cnic_bnx2_ops;
4391         cp->start_hw = cnic_start_bnx2_hw;
4392         cp->stop_hw = cnic_stop_bnx2_hw;
4393         cp->setup_pgtbl = cnic_setup_page_tbl;
4394         cp->alloc_resc = cnic_alloc_bnx2_resc;
4395         cp->free_resc = cnic_free_resc;
4396         cp->start_cm = cnic_cm_init_bnx2_hw;
4397         cp->stop_cm = cnic_cm_stop_bnx2_hw;
4398         cp->enable_int = cnic_enable_bnx2_int;
4399         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
4400         cp->close_conn = cnic_close_bnx2_conn;
4401         cp->next_idx = cnic_bnx2_next_idx;
4402         cp->hw_idx = cnic_bnx2_hw_idx;
4403         return cdev;
4404
4405 cnic_err:
4406         dev_put(dev);
4407         return NULL;
4408 }
4409
4410 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
4411 {
4412         struct pci_dev *pdev;
4413         struct cnic_dev *cdev;
4414         struct cnic_local *cp;
4415         struct cnic_eth_dev *ethdev = NULL;
4416         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4417
4418         probe = symbol_get(bnx2x_cnic_probe);
4419         if (probe) {
4420                 ethdev = (*probe)(dev);
4421                 symbol_put(bnx2x_cnic_probe);
4422         }
4423         if (!ethdev)
4424                 return NULL;
4425
4426         pdev = ethdev->pdev;
4427         if (!pdev)
4428                 return NULL;
4429
4430         dev_hold(dev);
4431         cdev = cnic_alloc_dev(dev, pdev);
4432         if (cdev == NULL) {
4433                 dev_put(dev);
4434                 return NULL;
4435         }
4436
4437         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
4438         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
4439
4440         cp = cdev->cnic_priv;
4441         cp->ethdev = ethdev;
4442         cdev->pcidev = pdev;
4443
4444         cp->cnic_ops = &cnic_bnx2x_ops;
4445         cp->start_hw = cnic_start_bnx2x_hw;
4446         cp->stop_hw = cnic_stop_bnx2x_hw;
4447         cp->setup_pgtbl = cnic_setup_page_tbl_le;
4448         cp->alloc_resc = cnic_alloc_bnx2x_resc;
4449         cp->free_resc = cnic_free_resc;
4450         cp->start_cm = cnic_cm_init_bnx2x_hw;
4451         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
4452         cp->enable_int = cnic_enable_bnx2x_int;
4453         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
4454         cp->ack_int = cnic_ack_bnx2x_msix;
4455         cp->close_conn = cnic_close_bnx2x_conn;
4456         cp->next_idx = cnic_bnx2x_next_idx;
4457         cp->hw_idx = cnic_bnx2x_hw_idx;
4458         return cdev;
4459 }
4460
4461 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
4462 {
4463         struct ethtool_drvinfo drvinfo;
4464         struct cnic_dev *cdev = NULL;
4465
4466         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
4467                 memset(&drvinfo, 0, sizeof(drvinfo));
4468                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
4469
4470                 if (!strcmp(drvinfo.driver, "bnx2"))
4471                         cdev = init_bnx2_cnic(dev);
4472                 if (!strcmp(drvinfo.driver, "bnx2x"))
4473                         cdev = init_bnx2x_cnic(dev);
4474                 if (cdev) {
4475                         write_lock(&cnic_dev_lock);
4476                         list_add(&cdev->list, &cnic_dev_list);
4477                         write_unlock(&cnic_dev_lock);
4478                 }
4479         }
4480         return cdev;
4481 }
4482
4483 /**
4484  * netdev event handler
4485  */
4486 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
4487                                                          void *ptr)
4488 {
4489         struct net_device *netdev = ptr;
4490         struct cnic_dev *dev;
4491         int if_type;
4492         int new_dev = 0;
4493
4494         dev = cnic_from_netdev(netdev);
4495
4496         if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
4497                 /* Check for the hot-plug device */
4498                 dev = is_cnic_dev(netdev);
4499                 if (dev) {
4500                         new_dev = 1;
4501                         cnic_hold(dev);
4502                 }
4503         }
4504         if (dev) {
4505                 struct cnic_local *cp = dev->cnic_priv;
4506
4507                 if (new_dev)
4508                         cnic_ulp_init(dev);
4509                 else if (event == NETDEV_UNREGISTER)
4510                         cnic_ulp_exit(dev);
4511
4512                 if (event == NETDEV_UP) {
4513                         if (cnic_register_netdev(dev) != 0) {
4514                                 cnic_put(dev);
4515                                 goto done;
4516                         }
4517                         if (!cnic_start_hw(dev))
4518                                 cnic_ulp_start(dev);
4519                 }
4520
4521                 rcu_read_lock();
4522                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
4523                         struct cnic_ulp_ops *ulp_ops;
4524                         void *ctx;
4525
4526                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
4527                         if (!ulp_ops || !ulp_ops->indicate_netevent)
4528                                 continue;
4529
4530                         ctx = cp->ulp_handle[if_type];
4531
4532                         ulp_ops->indicate_netevent(ctx, event);
4533                 }
4534                 rcu_read_unlock();
4535
4536                 if (event == NETDEV_GOING_DOWN) {
4537                         cnic_ulp_stop(dev);
4538                         cnic_stop_hw(dev);
4539                         cnic_unregister_netdev(dev);
4540                 } else if (event == NETDEV_UNREGISTER) {
4541                         write_lock(&cnic_dev_lock);
4542                         list_del_init(&dev->list);
4543                         write_unlock(&cnic_dev_lock);
4544
4545                         cnic_put(dev);
4546                         cnic_free_dev(dev);
4547                         goto done;
4548                 }
4549                 cnic_put(dev);
4550         }
4551 done:
4552         return NOTIFY_DONE;
4553 }
4554
4555 static struct notifier_block cnic_netdev_notifier = {
4556         .notifier_call = cnic_netdev_event
4557 };
4558
4559 static void cnic_release(void)
4560 {
4561         struct cnic_dev *dev;
4562
4563         while (!list_empty(&cnic_dev_list)) {
4564                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
4565                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4566                         cnic_ulp_stop(dev);
4567                         cnic_stop_hw(dev);
4568                 }
4569
4570                 cnic_ulp_exit(dev);
4571                 cnic_unregister_netdev(dev);
4572                 list_del_init(&dev->list);
4573                 cnic_free_dev(dev);
4574         }
4575 }
4576
4577 static int __init cnic_init(void)
4578 {
4579         int rc = 0;
4580
4581         printk(KERN_INFO "%s", version);
4582
4583         rc = register_netdevice_notifier(&cnic_netdev_notifier);
4584         if (rc) {
4585                 cnic_release();
4586                 return rc;
4587         }
4588
4589         return 0;
4590 }
4591
4592 static void __exit cnic_exit(void)
4593 {
4594         unregister_netdevice_notifier(&cnic_netdev_notifier);
4595         cnic_release();
4596         return;
4597 }
4598
4599 module_init(cnic_init);
4600 module_exit(cnic_exit);