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