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         cp->l2_rx_ring_size = 15;
1108
1109         ret = cnic_alloc_l2_rings(dev, 4);
1110         if (ret)
1111                 goto error;
1112
1113         ret = cnic_alloc_uio(dev);
1114         if (ret)
1115                 goto error;
1116
1117         return 0;
1118
1119 error:
1120         cnic_free_resc(dev);
1121         return -ENOMEM;
1122 }
1123
1124 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1125 {
1126         return cp->max_kwq_idx -
1127                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1128 }
1129
1130 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1131                                   u32 num_wqes)
1132 {
1133         struct cnic_local *cp = dev->cnic_priv;
1134         struct kwqe *prod_qe;
1135         u16 prod, sw_prod, i;
1136
1137         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1138                 return -EAGAIN;         /* bnx2 is down */
1139
1140         spin_lock_bh(&cp->cnic_ulp_lock);
1141         if (num_wqes > cnic_kwq_avail(cp) &&
1142             !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) {
1143                 spin_unlock_bh(&cp->cnic_ulp_lock);
1144                 return -EAGAIN;
1145         }
1146
1147         cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT;
1148
1149         prod = cp->kwq_prod_idx;
1150         sw_prod = prod & MAX_KWQ_IDX;
1151         for (i = 0; i < num_wqes; i++) {
1152                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1153                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1154                 prod++;
1155                 sw_prod = prod & MAX_KWQ_IDX;
1156         }
1157         cp->kwq_prod_idx = prod;
1158
1159         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1160
1161         spin_unlock_bh(&cp->cnic_ulp_lock);
1162         return 0;
1163 }
1164
1165 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1166                                    union l5cm_specific_data *l5_data)
1167 {
1168         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1169         dma_addr_t map;
1170
1171         map = ctx->kwqe_data_mapping;
1172         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1173         l5_data->phy_address.hi = (u64) map >> 32;
1174         return ctx->kwqe_data;
1175 }
1176
1177 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1178                                 u32 type, union l5cm_specific_data *l5_data)
1179 {
1180         struct cnic_local *cp = dev->cnic_priv;
1181         struct l5cm_spe kwqe;
1182         struct kwqe_16 *kwq[1];
1183         int ret;
1184
1185         kwqe.hdr.conn_and_cmd_data =
1186                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1187                              BNX2X_HW_CID(cid, cp->func)));
1188         kwqe.hdr.type = cpu_to_le16(type);
1189         kwqe.hdr.reserved = 0;
1190         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1191         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1192
1193         kwq[0] = (struct kwqe_16 *) &kwqe;
1194
1195         spin_lock_bh(&cp->cnic_ulp_lock);
1196         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1197         spin_unlock_bh(&cp->cnic_ulp_lock);
1198
1199         if (ret == 1)
1200                 return 0;
1201
1202         return -EBUSY;
1203 }
1204
1205 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1206                                    struct kcqe *cqes[], u32 num_cqes)
1207 {
1208         struct cnic_local *cp = dev->cnic_priv;
1209         struct cnic_ulp_ops *ulp_ops;
1210
1211         rcu_read_lock();
1212         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1213         if (likely(ulp_ops)) {
1214                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1215                                           cqes, num_cqes);
1216         }
1217         rcu_read_unlock();
1218 }
1219
1220 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1221 {
1222         struct cnic_local *cp = dev->cnic_priv;
1223         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1224         int func = cp->func, pages;
1225         int hq_bds;
1226
1227         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1228         cp->num_ccells = req1->num_ccells_per_conn;
1229         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1230                               cp->num_iscsi_tasks;
1231         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1232                         BNX2X_ISCSI_R2TQE_SIZE;
1233         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1234         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1235         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1236         cp->num_cqs = req1->num_cqs;
1237
1238         if (!dev->max_iscsi_conn)
1239                 return 0;
1240
1241         /* init Tstorm RAM */
1242         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(func),
1243                   req1->rq_num_wqes);
1244         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1245                   PAGE_SIZE);
1246         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1247                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1248         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1249                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1250                   req1->num_tasks_per_conn);
1251
1252         /* init Ustorm RAM */
1253         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1254                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(func),
1255                   req1->rq_buffer_size);
1256         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1257                   PAGE_SIZE);
1258         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1259                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1260         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1261                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1262                   req1->num_tasks_per_conn);
1263         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(func),
1264                   req1->rq_num_wqes);
1265         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(func),
1266                   req1->cq_num_wqes);
1267         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1268                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1269
1270         /* init Xstorm RAM */
1271         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1272                   PAGE_SIZE);
1273         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1274                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1275         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1276                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1277                   req1->num_tasks_per_conn);
1278         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1279                   hq_bds);
1280         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(func),
1281                   req1->num_tasks_per_conn);
1282         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1283                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1284
1285         /* init Cstorm RAM */
1286         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1287                   PAGE_SIZE);
1288         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1289                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1290         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1291                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1292                   req1->num_tasks_per_conn);
1293         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(func),
1294                   req1->cq_num_wqes);
1295         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1296                   hq_bds);
1297
1298         return 0;
1299 }
1300
1301 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1302 {
1303         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1304         struct cnic_local *cp = dev->cnic_priv;
1305         int func = cp->func;
1306         struct iscsi_kcqe kcqe;
1307         struct kcqe *cqes[1];
1308
1309         memset(&kcqe, 0, sizeof(kcqe));
1310         if (!dev->max_iscsi_conn) {
1311                 kcqe.completion_status =
1312                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1313                 goto done;
1314         }
1315
1316         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1317                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1318         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1319                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1320                 req2->error_bit_map[1]);
1321
1322         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1323                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1324         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1325                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1326         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1327                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1328                 req2->error_bit_map[1]);
1329
1330         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1331                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1332
1333         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1334
1335 done:
1336         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1337         cqes[0] = (struct kcqe *) &kcqe;
1338         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1339
1340         return 0;
1341 }
1342
1343 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1344 {
1345         struct cnic_local *cp = dev->cnic_priv;
1346         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1347
1348         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1349                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1350
1351                 cnic_free_dma(dev, &iscsi->hq_info);
1352                 cnic_free_dma(dev, &iscsi->r2tq_info);
1353                 cnic_free_dma(dev, &iscsi->task_array_info);
1354         }
1355         cnic_free_id(&cp->cid_tbl, ctx->cid);
1356         ctx->cid = 0;
1357 }
1358
1359 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1360 {
1361         u32 cid;
1362         int ret, pages;
1363         struct cnic_local *cp = dev->cnic_priv;
1364         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1365         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1366
1367         cid = cnic_alloc_new_id(&cp->cid_tbl);
1368         if (cid == -1) {
1369                 ret = -ENOMEM;
1370                 goto error;
1371         }
1372
1373         ctx->cid = cid;
1374         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1375
1376         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1377         if (ret)
1378                 goto error;
1379
1380         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1381         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1382         if (ret)
1383                 goto error;
1384
1385         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1386         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1387         if (ret)
1388                 goto error;
1389
1390         return 0;
1391
1392 error:
1393         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1394         return ret;
1395 }
1396
1397 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1398                                 struct regpair *ctx_addr)
1399 {
1400         struct cnic_local *cp = dev->cnic_priv;
1401         struct cnic_eth_dev *ethdev = cp->ethdev;
1402         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1403         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1404         unsigned long align_off = 0;
1405         dma_addr_t ctx_map;
1406         void *ctx;
1407
1408         if (cp->ctx_align) {
1409                 unsigned long mask = cp->ctx_align - 1;
1410
1411                 if (cp->ctx_arr[blk].mapping & mask)
1412                         align_off = cp->ctx_align -
1413                                     (cp->ctx_arr[blk].mapping & mask);
1414         }
1415         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1416                 (off * BNX2X_CONTEXT_MEM_SIZE);
1417         ctx = cp->ctx_arr[blk].ctx + align_off +
1418               (off * BNX2X_CONTEXT_MEM_SIZE);
1419         if (init)
1420                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1421
1422         ctx_addr->lo = ctx_map & 0xffffffff;
1423         ctx_addr->hi = (u64) ctx_map >> 32;
1424         return ctx;
1425 }
1426
1427 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1428                                 u32 num)
1429 {
1430         struct cnic_local *cp = dev->cnic_priv;
1431         struct iscsi_kwqe_conn_offload1 *req1 =
1432                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1433         struct iscsi_kwqe_conn_offload2 *req2 =
1434                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1435         struct iscsi_kwqe_conn_offload3 *req3;
1436         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1437         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1438         u32 cid = ctx->cid;
1439         u32 hw_cid = BNX2X_HW_CID(cid, cp->func);
1440         struct iscsi_context *ictx;
1441         struct regpair context_addr;
1442         int i, j, n = 2, n_max;
1443
1444         ctx->ctx_flags = 0;
1445         if (!req2->num_additional_wqes)
1446                 return -EINVAL;
1447
1448         n_max = req2->num_additional_wqes + 2;
1449
1450         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1451         if (ictx == NULL)
1452                 return -ENOMEM;
1453
1454         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1455
1456         ictx->xstorm_ag_context.hq_prod = 1;
1457
1458         ictx->xstorm_st_context.iscsi.first_burst_length =
1459                 ISCSI_DEF_FIRST_BURST_LEN;
1460         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1461                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1462         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1463                 req1->sq_page_table_addr_lo;
1464         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1465                 req1->sq_page_table_addr_hi;
1466         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1467         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1468         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1469                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1470         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1471                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1472         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1473                 iscsi->hq_info.pgtbl[0];
1474         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1475                 iscsi->hq_info.pgtbl[1];
1476         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1477                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1478         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1479                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1480         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1481                 iscsi->r2tq_info.pgtbl[0];
1482         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1483                 iscsi->r2tq_info.pgtbl[1];
1484         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1485                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1486         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1487                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1488         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1489                 BNX2X_ISCSI_PBL_NOT_CACHED;
1490         ictx->xstorm_st_context.iscsi.flags.flags |=
1491                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1492         ictx->xstorm_st_context.iscsi.flags.flags |=
1493                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1494
1495         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1496         /* TSTORM requires the base address of RQ DB & not PTE */
1497         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1498                 req2->rq_page_table_addr_lo & PAGE_MASK;
1499         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1500                 req2->rq_page_table_addr_hi;
1501         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1502         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1503         ictx->tstorm_st_context.tcp.flags2 |=
1504                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1505
1506         ictx->timers_context.flags |= ISCSI_TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1507
1508         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1509                 req2->rq_page_table_addr_lo;
1510         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1511                 req2->rq_page_table_addr_hi;
1512         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1513         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1514         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1515                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1516         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1517                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1518         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1519                 iscsi->r2tq_info.pgtbl[0];
1520         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1521                 iscsi->r2tq_info.pgtbl[1];
1522         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1523                 req1->cq_page_table_addr_lo;
1524         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1525                 req1->cq_page_table_addr_hi;
1526         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1527         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1528         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1529         ictx->ustorm_st_context.task_pbe_cache_index =
1530                 BNX2X_ISCSI_PBL_NOT_CACHED;
1531         ictx->ustorm_st_context.task_pdu_cache_index =
1532                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1533
1534         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1535                 if (j == 3) {
1536                         if (n >= n_max)
1537                                 break;
1538                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1539                         j = 0;
1540                 }
1541                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1542                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1543                         req3->qp_first_pte[j].hi;
1544                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1545                         req3->qp_first_pte[j].lo;
1546         }
1547
1548         ictx->ustorm_st_context.task_pbl_base.lo =
1549                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1550         ictx->ustorm_st_context.task_pbl_base.hi =
1551                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1552         ictx->ustorm_st_context.tce_phy_addr.lo =
1553                 iscsi->task_array_info.pgtbl[0];
1554         ictx->ustorm_st_context.tce_phy_addr.hi =
1555                 iscsi->task_array_info.pgtbl[1];
1556         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1557         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1558         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1559         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1560                 ISCSI_DEF_MAX_BURST_LEN;
1561         ictx->ustorm_st_context.negotiated_rx |=
1562                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1563                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1564
1565         ictx->cstorm_st_context.hq_pbl_base.lo =
1566                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1567         ictx->cstorm_st_context.hq_pbl_base.hi =
1568                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1569         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1570         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1571         ictx->cstorm_st_context.task_pbl_base.lo =
1572                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1573         ictx->cstorm_st_context.task_pbl_base.hi =
1574                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1575         /* CSTORM and USTORM initialization is different, CSTORM requires
1576          * CQ DB base & not PTE addr */
1577         ictx->cstorm_st_context.cq_db_base.lo =
1578                 req1->cq_page_table_addr_lo & PAGE_MASK;
1579         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1580         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1581         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1582         for (i = 0; i < cp->num_cqs; i++) {
1583                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1584                         ISCSI_INITIAL_SN;
1585                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1586                         ISCSI_INITIAL_SN;
1587         }
1588
1589         ictx->xstorm_ag_context.cdu_reserved =
1590                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1591                                        ISCSI_CONNECTION_TYPE);
1592         ictx->ustorm_ag_context.cdu_usage =
1593                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1594                                        ISCSI_CONNECTION_TYPE);
1595         return 0;
1596
1597 }
1598
1599 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1600                                    u32 num, int *work)
1601 {
1602         struct iscsi_kwqe_conn_offload1 *req1;
1603         struct iscsi_kwqe_conn_offload2 *req2;
1604         struct cnic_local *cp = dev->cnic_priv;
1605         struct iscsi_kcqe kcqe;
1606         struct kcqe *cqes[1];
1607         u32 l5_cid;
1608         int ret;
1609
1610         if (num < 2) {
1611                 *work = num;
1612                 return -EINVAL;
1613         }
1614
1615         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1616         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1617         if ((num - 2) < req2->num_additional_wqes) {
1618                 *work = num;
1619                 return -EINVAL;
1620         }
1621         *work = 2 + req2->num_additional_wqes;;
1622
1623         l5_cid = req1->iscsi_conn_id;
1624         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1625                 return -EINVAL;
1626
1627         memset(&kcqe, 0, sizeof(kcqe));
1628         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1629         kcqe.iscsi_conn_id = l5_cid;
1630         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1631
1632         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1633                 atomic_dec(&cp->iscsi_conn);
1634                 ret = 0;
1635                 goto done;
1636         }
1637         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1638         if (ret) {
1639                 atomic_dec(&cp->iscsi_conn);
1640                 ret = 0;
1641                 goto done;
1642         }
1643         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1644         if (ret < 0) {
1645                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1646                 atomic_dec(&cp->iscsi_conn);
1647                 goto done;
1648         }
1649
1650         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1651         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp->ctx_tbl[l5_cid].cid,
1652                                                   cp->func);
1653
1654 done:
1655         cqes[0] = (struct kcqe *) &kcqe;
1656         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1657         return ret;
1658 }
1659
1660
1661 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1662 {
1663         struct cnic_local *cp = dev->cnic_priv;
1664         struct iscsi_kwqe_conn_update *req =
1665                 (struct iscsi_kwqe_conn_update *) kwqe;
1666         void *data;
1667         union l5cm_specific_data l5_data;
1668         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1669         int ret;
1670
1671         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1672                 return -EINVAL;
1673
1674         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1675         if (!data)
1676                 return -ENOMEM;
1677
1678         memcpy(data, kwqe, sizeof(struct kwqe));
1679
1680         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1681                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1682         return ret;
1683 }
1684
1685 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1686 {
1687         struct cnic_local *cp = dev->cnic_priv;
1688         struct iscsi_kwqe_conn_destroy *req =
1689                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1690         union l5cm_specific_data l5_data;
1691         u32 l5_cid = req->reserved0;
1692         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1693         int ret = 0;
1694         struct iscsi_kcqe kcqe;
1695         struct kcqe *cqes[1];
1696
1697         if (!(ctx->ctx_flags & CTX_FL_OFFLD_START))
1698                 goto skip_cfc_delete;
1699
1700         while (!time_after(jiffies, ctx->timestamp + (2 * HZ)))
1701                 msleep(250);
1702
1703         init_waitqueue_head(&ctx->waitq);
1704         ctx->wait_cond = 0;
1705         memset(&l5_data, 0, sizeof(l5_data));
1706         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
1707                                   req->context_id,
1708                                   ETH_CONNECTION_TYPE |
1709                                   (1 << SPE_HDR_COMMON_RAMROD_SHIFT),
1710                                   &l5_data);
1711         if (ret == 0)
1712                 wait_event(ctx->waitq, ctx->wait_cond);
1713
1714 skip_cfc_delete:
1715         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1716
1717         atomic_dec(&cp->iscsi_conn);
1718
1719         memset(&kcqe, 0, sizeof(kcqe));
1720         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1721         kcqe.iscsi_conn_id = l5_cid;
1722         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1723         kcqe.iscsi_conn_context_id = req->context_id;
1724
1725         cqes[0] = (struct kcqe *) &kcqe;
1726         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1727
1728         return ret;
1729 }
1730
1731 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1732                                       struct l4_kwq_connect_req1 *kwqe1,
1733                                       struct l4_kwq_connect_req3 *kwqe3,
1734                                       struct l5cm_active_conn_buffer *conn_buf)
1735 {
1736         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1737         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1738                 &conn_buf->xstorm_conn_buffer;
1739         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1740                 &conn_buf->tstorm_conn_buffer;
1741         struct regpair context_addr;
1742         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1743         struct in6_addr src_ip, dst_ip;
1744         int i;
1745         u32 *addrp;
1746
1747         addrp = (u32 *) &conn_addr->local_ip_addr;
1748         for (i = 0; i < 4; i++, addrp++)
1749                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1750
1751         addrp = (u32 *) &conn_addr->remote_ip_addr;
1752         for (i = 0; i < 4; i++, addrp++)
1753                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1754
1755         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1756
1757         xstorm_buf->context_addr.hi = context_addr.hi;
1758         xstorm_buf->context_addr.lo = context_addr.lo;
1759         xstorm_buf->mss = 0xffff;
1760         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1761         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1762                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1763         xstorm_buf->pseudo_header_checksum =
1764                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1765
1766         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1767                 tstorm_buf->params |=
1768                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1769         if (kwqe3->ka_timeout) {
1770                 tstorm_buf->ka_enable = 1;
1771                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1772                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1773                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1774         }
1775         tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1776         tstorm_buf->snd_buf = kwqe3->snd_buf;
1777         tstorm_buf->max_rt_time = 0xffffffff;
1778 }
1779
1780 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1781 {
1782         struct cnic_local *cp = dev->cnic_priv;
1783         int func = CNIC_FUNC(cp);
1784         u8 *mac = dev->mac_addr;
1785
1786         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1787                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(func), mac[0]);
1788         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1789                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(func), mac[1]);
1790         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1791                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(func), mac[2]);
1792         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1793                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(func), mac[3]);
1794         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1795                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(func), mac[4]);
1796         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1797                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(func), mac[5]);
1798
1799         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1800                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func), mac[5]);
1801         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1802                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1803                  mac[4]);
1804         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1805                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func), mac[3]);
1806         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1807                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1808                  mac[2]);
1809         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1810                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 2,
1811                  mac[1]);
1812         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1813                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 3,
1814                  mac[0]);
1815 }
1816
1817 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1818 {
1819         struct cnic_local *cp = dev->cnic_priv;
1820         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1821         u16 tstorm_flags = 0;
1822
1823         if (tcp_ts) {
1824                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1825                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1826         }
1827
1828         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1829                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), xstorm_flags);
1830
1831         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1832                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), tstorm_flags);
1833 }
1834
1835 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
1836                               u32 num, int *work)
1837 {
1838         struct cnic_local *cp = dev->cnic_priv;
1839         struct l4_kwq_connect_req1 *kwqe1 =
1840                 (struct l4_kwq_connect_req1 *) wqes[0];
1841         struct l4_kwq_connect_req3 *kwqe3;
1842         struct l5cm_active_conn_buffer *conn_buf;
1843         struct l5cm_conn_addr_params *conn_addr;
1844         union l5cm_specific_data l5_data;
1845         u32 l5_cid = kwqe1->pg_cid;
1846         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
1847         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1848         int ret;
1849
1850         if (num < 2) {
1851                 *work = num;
1852                 return -EINVAL;
1853         }
1854
1855         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
1856                 *work = 3;
1857         else
1858                 *work = 2;
1859
1860         if (num < *work) {
1861                 *work = num;
1862                 return -EINVAL;
1863         }
1864
1865         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
1866                 printk(KERN_ERR PFX "%s: conn_buf size too big\n",
1867                                dev->netdev->name);
1868                 return -ENOMEM;
1869         }
1870         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1871         if (!conn_buf)
1872                 return -ENOMEM;
1873
1874         memset(conn_buf, 0, sizeof(*conn_buf));
1875
1876         conn_addr = &conn_buf->conn_addr_buf;
1877         conn_addr->remote_addr_0 = csk->ha[0];
1878         conn_addr->remote_addr_1 = csk->ha[1];
1879         conn_addr->remote_addr_2 = csk->ha[2];
1880         conn_addr->remote_addr_3 = csk->ha[3];
1881         conn_addr->remote_addr_4 = csk->ha[4];
1882         conn_addr->remote_addr_5 = csk->ha[5];
1883
1884         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
1885                 struct l4_kwq_connect_req2 *kwqe2 =
1886                         (struct l4_kwq_connect_req2 *) wqes[1];
1887
1888                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
1889                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
1890                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
1891
1892                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
1893                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
1894                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
1895                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
1896         }
1897         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
1898
1899         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
1900         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
1901         conn_addr->local_tcp_port = kwqe1->src_port;
1902         conn_addr->remote_tcp_port = kwqe1->dst_port;
1903
1904         conn_addr->pmtu = kwqe3->pmtu;
1905         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
1906
1907         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1908                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->func), csk->vlan_id);
1909
1910         cnic_bnx2x_set_tcp_timestamp(dev,
1911                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
1912
1913         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
1914                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1915         if (!ret)
1916                 ctx->ctx_flags |= CTX_FL_OFFLD_START;
1917
1918         return ret;
1919 }
1920
1921 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
1922 {
1923         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
1924         union l5cm_specific_data l5_data;
1925         int ret;
1926
1927         memset(&l5_data, 0, sizeof(l5_data));
1928         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
1929                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1930         return ret;
1931 }
1932
1933 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
1934 {
1935         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
1936         union l5cm_specific_data l5_data;
1937         int ret;
1938
1939         memset(&l5_data, 0, sizeof(l5_data));
1940         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
1941                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1942         return ret;
1943 }
1944 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1945 {
1946         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
1947         struct l4_kcq kcqe;
1948         struct kcqe *cqes[1];
1949
1950         memset(&kcqe, 0, sizeof(kcqe));
1951         kcqe.pg_host_opaque = req->host_opaque;
1952         kcqe.pg_cid = req->host_opaque;
1953         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
1954         cqes[0] = (struct kcqe *) &kcqe;
1955         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1956         return 0;
1957 }
1958
1959 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1960 {
1961         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
1962         struct l4_kcq kcqe;
1963         struct kcqe *cqes[1];
1964
1965         memset(&kcqe, 0, sizeof(kcqe));
1966         kcqe.pg_host_opaque = req->pg_host_opaque;
1967         kcqe.pg_cid = req->pg_cid;
1968         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
1969         cqes[0] = (struct kcqe *) &kcqe;
1970         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1971         return 0;
1972 }
1973
1974 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1975                                    u32 num_wqes)
1976 {
1977         int i, work, ret;
1978         u32 opcode;
1979         struct kwqe *kwqe;
1980
1981         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1982                 return -EAGAIN;         /* bnx2 is down */
1983
1984         for (i = 0; i < num_wqes; ) {
1985                 kwqe = wqes[i];
1986                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
1987                 work = 1;
1988
1989                 switch (opcode) {
1990                 case ISCSI_KWQE_OPCODE_INIT1:
1991                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
1992                         break;
1993                 case ISCSI_KWQE_OPCODE_INIT2:
1994                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
1995                         break;
1996                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
1997                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
1998                                                      num_wqes - i, &work);
1999                         break;
2000                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2001                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2002                         break;
2003                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2004                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2005                         break;
2006                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2007                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2008                                                  &work);
2009                         break;
2010                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2011                         ret = cnic_bnx2x_close(dev, kwqe);
2012                         break;
2013                 case L4_KWQE_OPCODE_VALUE_RESET:
2014                         ret = cnic_bnx2x_reset(dev, kwqe);
2015                         break;
2016                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2017                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2018                         break;
2019                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2020                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2021                         break;
2022                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2023                         ret = 0;
2024                         break;
2025                 default:
2026                         ret = 0;
2027                         printk(KERN_ERR PFX "%s: Unknown type of KWQE(0x%x)\n",
2028                                dev->netdev->name, opcode);
2029                         break;
2030                 }
2031                 if (ret < 0)
2032                         printk(KERN_ERR PFX "%s: KWQE(0x%x) failed\n",
2033                                dev->netdev->name, opcode);
2034                 i += work;
2035         }
2036         return 0;
2037 }
2038
2039 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2040 {
2041         struct cnic_local *cp = dev->cnic_priv;
2042         int i, j;
2043
2044         i = 0;
2045         j = 1;
2046         while (num_cqes) {
2047                 struct cnic_ulp_ops *ulp_ops;
2048                 int ulp_type;
2049                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2050                 u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;
2051
2052                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2053                         cnic_kwq_completion(dev, 1);
2054
2055                 while (j < num_cqes) {
2056                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2057
2058                         if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
2059                                 break;
2060
2061                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2062                                 cnic_kwq_completion(dev, 1);
2063                         j++;
2064                 }
2065
2066                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2067                         ulp_type = CNIC_ULP_RDMA;
2068                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2069                         ulp_type = CNIC_ULP_ISCSI;
2070                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2071                         ulp_type = CNIC_ULP_L4;
2072                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2073                         goto end;
2074                 else {
2075                         printk(KERN_ERR PFX "%s: Unknown type of KCQE(0x%x)\n",
2076                                dev->netdev->name, kcqe_op_flag);
2077                         goto end;
2078                 }
2079
2080                 rcu_read_lock();
2081                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2082                 if (likely(ulp_ops)) {
2083                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2084                                                   cp->completed_kcq + i, j);
2085                 }
2086                 rcu_read_unlock();
2087 end:
2088                 num_cqes -= j;
2089                 i += j;
2090                 j = 1;
2091         }
2092         return;
2093 }
2094
2095 static u16 cnic_bnx2_next_idx(u16 idx)
2096 {
2097         return idx + 1;
2098 }
2099
2100 static u16 cnic_bnx2_hw_idx(u16 idx)
2101 {
2102         return idx;
2103 }
2104
2105 static u16 cnic_bnx2x_next_idx(u16 idx)
2106 {
2107         idx++;
2108         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2109                 idx++;
2110
2111         return idx;
2112 }
2113
2114 static u16 cnic_bnx2x_hw_idx(u16 idx)
2115 {
2116         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2117                 idx++;
2118         return idx;
2119 }
2120
2121 static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
2122 {
2123         struct cnic_local *cp = dev->cnic_priv;
2124         u16 i, ri, last;
2125         struct kcqe *kcqe;
2126         int kcqe_cnt = 0, last_cnt = 0;
2127
2128         i = ri = last = *sw_prod;
2129         ri &= MAX_KCQ_IDX;
2130
2131         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2132                 kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2133                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2134                 i = cp->next_idx(i);
2135                 ri = i & MAX_KCQ_IDX;
2136                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2137                         last_cnt = kcqe_cnt;
2138                         last = i;
2139                 }
2140         }
2141
2142         *sw_prod = last;
2143         return last_cnt;
2144 }
2145
2146 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2147 {
2148         u16 rx_cons = *cp->rx_cons_ptr;
2149         u16 tx_cons = *cp->tx_cons_ptr;
2150
2151         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2152                 cp->tx_cons = tx_cons;
2153                 cp->rx_cons = rx_cons;
2154
2155                 uio_event_notify(cp->cnic_uinfo);
2156         }
2157 }
2158
2159 static int cnic_service_bnx2(void *data, void *status_blk)
2160 {
2161         struct cnic_dev *dev = data;
2162         struct status_block *sblk = status_blk;
2163         struct cnic_local *cp = dev->cnic_priv;
2164         u32 status_idx = sblk->status_idx;
2165         u16 hw_prod, sw_prod;
2166         int kcqe_cnt;
2167
2168         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2169                 return status_idx;
2170
2171         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2172
2173         hw_prod = sblk->status_completion_producer_index;
2174         sw_prod = cp->kcq_prod_idx;
2175         while (sw_prod != hw_prod) {
2176                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2177                 if (kcqe_cnt == 0)
2178                         goto done;
2179
2180                 service_kcqes(dev, kcqe_cnt);
2181
2182                 /* Tell compiler that status_blk fields can change. */
2183                 barrier();
2184                 if (status_idx != sblk->status_idx) {
2185                         status_idx = sblk->status_idx;
2186                         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2187                         hw_prod = sblk->status_completion_producer_index;
2188                 } else
2189                         break;
2190         }
2191
2192 done:
2193         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2194
2195         cp->kcq_prod_idx = sw_prod;
2196
2197         cnic_chk_pkt_rings(cp);
2198         return status_idx;
2199 }
2200
2201 static void cnic_service_bnx2_msix(unsigned long data)
2202 {
2203         struct cnic_dev *dev = (struct cnic_dev *) data;
2204         struct cnic_local *cp = dev->cnic_priv;
2205         struct status_block_msix *status_blk = cp->bnx2_status_blk;
2206         u32 status_idx = status_blk->status_idx;
2207         u16 hw_prod, sw_prod;
2208         int kcqe_cnt;
2209
2210         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2211
2212         hw_prod = status_blk->status_completion_producer_index;
2213         sw_prod = cp->kcq_prod_idx;
2214         while (sw_prod != hw_prod) {
2215                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2216                 if (kcqe_cnt == 0)
2217                         goto done;
2218
2219                 service_kcqes(dev, kcqe_cnt);
2220
2221                 /* Tell compiler that status_blk fields can change. */
2222                 barrier();
2223                 if (status_idx != status_blk->status_idx) {
2224                         status_idx = status_blk->status_idx;
2225                         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2226                         hw_prod = status_blk->status_completion_producer_index;
2227                 } else
2228                         break;
2229         }
2230
2231 done:
2232         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2233         cp->kcq_prod_idx = sw_prod;
2234
2235         cnic_chk_pkt_rings(cp);
2236
2237         cp->last_status_idx = status_idx;
2238         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2239                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2240 }
2241
2242 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2243 {
2244         struct cnic_dev *dev = dev_instance;
2245         struct cnic_local *cp = dev->cnic_priv;
2246         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2247
2248         if (cp->ack_int)
2249                 cp->ack_int(dev);
2250
2251         prefetch(cp->status_blk);
2252         prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2253
2254         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2255                 tasklet_schedule(&cp->cnic_irq_task);
2256
2257         return IRQ_HANDLED;
2258 }
2259
2260 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2261                                       u16 index, u8 op, u8 update)
2262 {
2263         struct cnic_local *cp = dev->cnic_priv;
2264         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2265                        COMMAND_REG_INT_ACK);
2266         struct igu_ack_register igu_ack;
2267
2268         igu_ack.status_block_index = index;
2269         igu_ack.sb_id_and_flags =
2270                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2271                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2272                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2273                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2274
2275         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2276 }
2277
2278 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2279 {
2280         struct cnic_local *cp = dev->cnic_priv;
2281
2282         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID, 0,
2283                            IGU_INT_DISABLE, 0);
2284 }
2285
2286 static void cnic_service_bnx2x_bh(unsigned long data)
2287 {
2288         struct cnic_dev *dev = (struct cnic_dev *) data;
2289         struct cnic_local *cp = dev->cnic_priv;
2290         u16 hw_prod, sw_prod;
2291         struct cstorm_status_block_c *sblk =
2292                 &cp->bnx2x_status_blk->c_status_block;
2293         u32 status_idx = sblk->status_block_index;
2294         int kcqe_cnt;
2295
2296         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2297                 return;
2298
2299         hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2300         hw_prod = cp->hw_idx(hw_prod);
2301         sw_prod = cp->kcq_prod_idx;
2302         while (sw_prod != hw_prod) {
2303                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2304                 if (kcqe_cnt == 0)
2305                         goto done;
2306
2307                 service_kcqes(dev, kcqe_cnt);
2308
2309                 /* Tell compiler that sblk fields can change. */
2310                 barrier();
2311                 if (status_idx == sblk->status_block_index)
2312                         break;
2313
2314                 status_idx = sblk->status_block_index;
2315                 hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2316                 hw_prod = cp->hw_idx(hw_prod);
2317         }
2318
2319 done:
2320         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod + MAX_KCQ_IDX);
2321         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID,
2322                            status_idx, IGU_INT_ENABLE, 1);
2323
2324         cp->kcq_prod_idx = sw_prod;
2325         return;
2326 }
2327
2328 static int cnic_service_bnx2x(void *data, void *status_blk)
2329 {
2330         struct cnic_dev *dev = data;
2331         struct cnic_local *cp = dev->cnic_priv;
2332         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2333
2334         prefetch(cp->status_blk);
2335         prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2336
2337         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2338                 tasklet_schedule(&cp->cnic_irq_task);
2339
2340         cnic_chk_pkt_rings(cp);
2341
2342         return 0;
2343 }
2344
2345 static void cnic_ulp_stop(struct cnic_dev *dev)
2346 {
2347         struct cnic_local *cp = dev->cnic_priv;
2348         int if_type;
2349
2350         if (cp->cnic_uinfo)
2351                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2352
2353         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2354                 struct cnic_ulp_ops *ulp_ops;
2355
2356                 mutex_lock(&cnic_lock);
2357                 ulp_ops = cp->ulp_ops[if_type];
2358                 if (!ulp_ops) {
2359                         mutex_unlock(&cnic_lock);
2360                         continue;
2361                 }
2362                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2363                 mutex_unlock(&cnic_lock);
2364
2365                 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2366                         ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2367
2368                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2369         }
2370 }
2371
2372 static void cnic_ulp_start(struct cnic_dev *dev)
2373 {
2374         struct cnic_local *cp = dev->cnic_priv;
2375         int if_type;
2376
2377         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2378                 struct cnic_ulp_ops *ulp_ops;
2379
2380                 mutex_lock(&cnic_lock);
2381                 ulp_ops = cp->ulp_ops[if_type];
2382                 if (!ulp_ops || !ulp_ops->cnic_start) {
2383                         mutex_unlock(&cnic_lock);
2384                         continue;
2385                 }
2386                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2387                 mutex_unlock(&cnic_lock);
2388
2389                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2390                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2391
2392                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2393         }
2394 }
2395
2396 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
2397 {
2398         struct cnic_dev *dev = data;
2399
2400         switch (info->cmd) {
2401         case CNIC_CTL_STOP_CMD:
2402                 cnic_hold(dev);
2403
2404                 cnic_ulp_stop(dev);
2405                 cnic_stop_hw(dev);
2406
2407                 cnic_put(dev);
2408                 break;
2409         case CNIC_CTL_START_CMD:
2410                 cnic_hold(dev);
2411
2412                 if (!cnic_start_hw(dev))
2413                         cnic_ulp_start(dev);
2414
2415                 cnic_put(dev);
2416                 break;
2417         case CNIC_CTL_COMPLETION_CMD: {
2418                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
2419                 u32 l5_cid;
2420                 struct cnic_local *cp = dev->cnic_priv;
2421
2422                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
2423                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2424
2425                         ctx->wait_cond = 1;
2426                         wake_up(&ctx->waitq);
2427                 }
2428                 break;
2429         }
2430         default:
2431                 return -EINVAL;
2432         }
2433         return 0;
2434 }
2435
2436 static void cnic_ulp_init(struct cnic_dev *dev)
2437 {
2438         int i;
2439         struct cnic_local *cp = dev->cnic_priv;
2440
2441         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2442                 struct cnic_ulp_ops *ulp_ops;
2443
2444                 mutex_lock(&cnic_lock);
2445                 ulp_ops = cnic_ulp_tbl[i];
2446                 if (!ulp_ops || !ulp_ops->cnic_init) {
2447                         mutex_unlock(&cnic_lock);
2448                         continue;
2449                 }
2450                 ulp_get(ulp_ops);
2451                 mutex_unlock(&cnic_lock);
2452
2453                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2454                         ulp_ops->cnic_init(dev);
2455
2456                 ulp_put(ulp_ops);
2457         }
2458 }
2459
2460 static void cnic_ulp_exit(struct cnic_dev *dev)
2461 {
2462         int i;
2463         struct cnic_local *cp = dev->cnic_priv;
2464
2465         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2466                 struct cnic_ulp_ops *ulp_ops;
2467
2468                 mutex_lock(&cnic_lock);
2469                 ulp_ops = cnic_ulp_tbl[i];
2470                 if (!ulp_ops || !ulp_ops->cnic_exit) {
2471                         mutex_unlock(&cnic_lock);
2472                         continue;
2473                 }
2474                 ulp_get(ulp_ops);
2475                 mutex_unlock(&cnic_lock);
2476
2477                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2478                         ulp_ops->cnic_exit(dev);
2479
2480                 ulp_put(ulp_ops);
2481         }
2482 }
2483
2484 static int cnic_cm_offload_pg(struct cnic_sock *csk)
2485 {
2486         struct cnic_dev *dev = csk->dev;
2487         struct l4_kwq_offload_pg *l4kwqe;
2488         struct kwqe *wqes[1];
2489
2490         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
2491         memset(l4kwqe, 0, sizeof(*l4kwqe));
2492         wqes[0] = (struct kwqe *) l4kwqe;
2493
2494         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
2495         l4kwqe->flags =
2496                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
2497         l4kwqe->l2hdr_nbytes = ETH_HLEN;
2498
2499         l4kwqe->da0 = csk->ha[0];
2500         l4kwqe->da1 = csk->ha[1];
2501         l4kwqe->da2 = csk->ha[2];
2502         l4kwqe->da3 = csk->ha[3];
2503         l4kwqe->da4 = csk->ha[4];
2504         l4kwqe->da5 = csk->ha[5];
2505
2506         l4kwqe->sa0 = dev->mac_addr[0];
2507         l4kwqe->sa1 = dev->mac_addr[1];
2508         l4kwqe->sa2 = dev->mac_addr[2];
2509         l4kwqe->sa3 = dev->mac_addr[3];
2510         l4kwqe->sa4 = dev->mac_addr[4];
2511         l4kwqe->sa5 = dev->mac_addr[5];
2512
2513         l4kwqe->etype = ETH_P_IP;
2514         l4kwqe->ipid_count = DEF_IPID_COUNT;
2515         l4kwqe->host_opaque = csk->l5_cid;
2516
2517         if (csk->vlan_id) {
2518                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
2519                 l4kwqe->vlan_tag = csk->vlan_id;
2520                 l4kwqe->l2hdr_nbytes += 4;
2521         }
2522
2523         return dev->submit_kwqes(dev, wqes, 1);
2524 }
2525
2526 static int cnic_cm_update_pg(struct cnic_sock *csk)
2527 {
2528         struct cnic_dev *dev = csk->dev;
2529         struct l4_kwq_update_pg *l4kwqe;
2530         struct kwqe *wqes[1];
2531
2532         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
2533         memset(l4kwqe, 0, sizeof(*l4kwqe));
2534         wqes[0] = (struct kwqe *) l4kwqe;
2535
2536         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
2537         l4kwqe->flags =
2538                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
2539         l4kwqe->pg_cid = csk->pg_cid;
2540
2541         l4kwqe->da0 = csk->ha[0];
2542         l4kwqe->da1 = csk->ha[1];
2543         l4kwqe->da2 = csk->ha[2];
2544         l4kwqe->da3 = csk->ha[3];
2545         l4kwqe->da4 = csk->ha[4];
2546         l4kwqe->da5 = csk->ha[5];
2547
2548         l4kwqe->pg_host_opaque = csk->l5_cid;
2549         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
2550
2551         return dev->submit_kwqes(dev, wqes, 1);
2552 }
2553
2554 static int cnic_cm_upload_pg(struct cnic_sock *csk)
2555 {
2556         struct cnic_dev *dev = csk->dev;
2557         struct l4_kwq_upload *l4kwqe;
2558         struct kwqe *wqes[1];
2559
2560         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
2561         memset(l4kwqe, 0, sizeof(*l4kwqe));
2562         wqes[0] = (struct kwqe *) l4kwqe;
2563
2564         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
2565         l4kwqe->flags =
2566                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
2567         l4kwqe->cid = csk->pg_cid;
2568
2569         return dev->submit_kwqes(dev, wqes, 1);
2570 }
2571
2572 static int cnic_cm_conn_req(struct cnic_sock *csk)
2573 {
2574         struct cnic_dev *dev = csk->dev;
2575         struct l4_kwq_connect_req1 *l4kwqe1;
2576         struct l4_kwq_connect_req2 *l4kwqe2;
2577         struct l4_kwq_connect_req3 *l4kwqe3;
2578         struct kwqe *wqes[3];
2579         u8 tcp_flags = 0;
2580         int num_wqes = 2;
2581
2582         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
2583         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
2584         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
2585         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
2586         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
2587         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
2588
2589         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
2590         l4kwqe3->flags =
2591                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
2592         l4kwqe3->ka_timeout = csk->ka_timeout;
2593         l4kwqe3->ka_interval = csk->ka_interval;
2594         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
2595         l4kwqe3->tos = csk->tos;
2596         l4kwqe3->ttl = csk->ttl;
2597         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
2598         l4kwqe3->pmtu = csk->mtu;
2599         l4kwqe3->rcv_buf = csk->rcv_buf;
2600         l4kwqe3->snd_buf = csk->snd_buf;
2601         l4kwqe3->seed = csk->seed;
2602
2603         wqes[0] = (struct kwqe *) l4kwqe1;
2604         if (test_bit(SK_F_IPV6, &csk->flags)) {
2605                 wqes[1] = (struct kwqe *) l4kwqe2;
2606                 wqes[2] = (struct kwqe *) l4kwqe3;
2607                 num_wqes = 3;
2608
2609                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
2610                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
2611                 l4kwqe2->flags =
2612                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
2613                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
2614                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
2615                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
2616                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
2617                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
2618                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
2619                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
2620                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
2621                                sizeof(struct tcphdr);
2622         } else {
2623                 wqes[1] = (struct kwqe *) l4kwqe3;
2624                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
2625                                sizeof(struct tcphdr);
2626         }
2627
2628         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
2629         l4kwqe1->flags =
2630                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
2631                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
2632         l4kwqe1->cid = csk->cid;
2633         l4kwqe1->pg_cid = csk->pg_cid;
2634         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
2635         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
2636         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
2637         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
2638         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
2639                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
2640         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
2641                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
2642         if (csk->tcp_flags & SK_TCP_NAGLE)
2643                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
2644         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
2645                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
2646         if (csk->tcp_flags & SK_TCP_SACK)
2647                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
2648         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
2649                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
2650
2651         l4kwqe1->tcp_flags = tcp_flags;
2652
2653         return dev->submit_kwqes(dev, wqes, num_wqes);
2654 }
2655
2656 static int cnic_cm_close_req(struct cnic_sock *csk)
2657 {
2658         struct cnic_dev *dev = csk->dev;
2659         struct l4_kwq_close_req *l4kwqe;
2660         struct kwqe *wqes[1];
2661
2662         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
2663         memset(l4kwqe, 0, sizeof(*l4kwqe));
2664         wqes[0] = (struct kwqe *) l4kwqe;
2665
2666         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
2667         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
2668         l4kwqe->cid = csk->cid;
2669
2670         return dev->submit_kwqes(dev, wqes, 1);
2671 }
2672
2673 static int cnic_cm_abort_req(struct cnic_sock *csk)
2674 {
2675         struct cnic_dev *dev = csk->dev;
2676         struct l4_kwq_reset_req *l4kwqe;
2677         struct kwqe *wqes[1];
2678
2679         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
2680         memset(l4kwqe, 0, sizeof(*l4kwqe));
2681         wqes[0] = (struct kwqe *) l4kwqe;
2682
2683         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
2684         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
2685         l4kwqe->cid = csk->cid;
2686
2687         return dev->submit_kwqes(dev, wqes, 1);
2688 }
2689
2690 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
2691                           u32 l5_cid, struct cnic_sock **csk, void *context)
2692 {
2693         struct cnic_local *cp = dev->cnic_priv;
2694         struct cnic_sock *csk1;
2695
2696         if (l5_cid >= MAX_CM_SK_TBL_SZ)
2697                 return -EINVAL;
2698
2699         csk1 = &cp->csk_tbl[l5_cid];
2700         if (atomic_read(&csk1->ref_count))
2701                 return -EAGAIN;
2702
2703         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
2704                 return -EBUSY;
2705
2706         csk1->dev = dev;
2707         csk1->cid = cid;
2708         csk1->l5_cid = l5_cid;
2709         csk1->ulp_type = ulp_type;
2710         csk1->context = context;
2711
2712         csk1->ka_timeout = DEF_KA_TIMEOUT;
2713         csk1->ka_interval = DEF_KA_INTERVAL;
2714         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
2715         csk1->tos = DEF_TOS;
2716         csk1->ttl = DEF_TTL;
2717         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
2718         csk1->rcv_buf = DEF_RCV_BUF;
2719         csk1->snd_buf = DEF_SND_BUF;
2720         csk1->seed = DEF_SEED;
2721
2722         *csk = csk1;
2723         return 0;
2724 }
2725
2726 static void cnic_cm_cleanup(struct cnic_sock *csk)
2727 {
2728         if (csk->src_port) {
2729                 struct cnic_dev *dev = csk->dev;
2730                 struct cnic_local *cp = dev->cnic_priv;
2731
2732                 cnic_free_id(&cp->csk_port_tbl, csk->src_port);
2733                 csk->src_port = 0;
2734         }
2735 }
2736
2737 static void cnic_close_conn(struct cnic_sock *csk)
2738 {
2739         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
2740                 cnic_cm_upload_pg(csk);
2741                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
2742         }
2743         cnic_cm_cleanup(csk);
2744 }
2745
2746 static int cnic_cm_destroy(struct cnic_sock *csk)
2747 {
2748         if (!cnic_in_use(csk))
2749                 return -EINVAL;
2750
2751         csk_hold(csk);
2752         clear_bit(SK_F_INUSE, &csk->flags);
2753         smp_mb__after_clear_bit();
2754         while (atomic_read(&csk->ref_count) != 1)
2755                 msleep(1);
2756         cnic_cm_cleanup(csk);
2757
2758         csk->flags = 0;
2759         csk_put(csk);
2760         return 0;
2761 }
2762
2763 static inline u16 cnic_get_vlan(struct net_device *dev,
2764                                 struct net_device **vlan_dev)
2765 {
2766         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2767                 *vlan_dev = vlan_dev_real_dev(dev);
2768                 return vlan_dev_vlan_id(dev);
2769         }
2770         *vlan_dev = dev;
2771         return 0;
2772 }
2773
2774 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
2775                              struct dst_entry **dst)
2776 {
2777 #if defined(CONFIG_INET)
2778         struct flowi fl;
2779         int err;
2780         struct rtable *rt;
2781
2782         memset(&fl, 0, sizeof(fl));
2783         fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
2784
2785         err = ip_route_output_key(&init_net, &rt, &fl);
2786         if (!err)
2787                 *dst = &rt->u.dst;
2788         return err;
2789 #else
2790         return -ENETUNREACH;
2791 #endif
2792 }
2793
2794 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
2795                              struct dst_entry **dst)
2796 {
2797 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2798         struct flowi fl;
2799
2800         memset(&fl, 0, sizeof(fl));
2801         ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
2802         if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
2803                 fl.oif = dst_addr->sin6_scope_id;
2804
2805         *dst = ip6_route_output(&init_net, NULL, &fl);
2806         if (*dst)
2807                 return 0;
2808 #endif
2809
2810         return -ENETUNREACH;
2811 }
2812
2813 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
2814                                            int ulp_type)
2815 {
2816         struct cnic_dev *dev = NULL;
2817         struct dst_entry *dst;
2818         struct net_device *netdev = NULL;
2819         int err = -ENETUNREACH;
2820
2821         if (dst_addr->sin_family == AF_INET)
2822                 err = cnic_get_v4_route(dst_addr, &dst);
2823         else if (dst_addr->sin_family == AF_INET6) {
2824                 struct sockaddr_in6 *dst_addr6 =
2825                         (struct sockaddr_in6 *) dst_addr;
2826
2827                 err = cnic_get_v6_route(dst_addr6, &dst);
2828         } else
2829                 return NULL;
2830
2831         if (err)
2832                 return NULL;
2833
2834         if (!dst->dev)
2835                 goto done;
2836
2837         cnic_get_vlan(dst->dev, &netdev);
2838
2839         dev = cnic_from_netdev(netdev);
2840
2841 done:
2842         dst_release(dst);
2843         if (dev)
2844                 cnic_put(dev);
2845         return dev;
2846 }
2847
2848 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2849 {
2850         struct cnic_dev *dev = csk->dev;
2851         struct cnic_local *cp = dev->cnic_priv;
2852
2853         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
2854 }
2855
2856 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2857 {
2858         struct cnic_dev *dev = csk->dev;
2859         struct cnic_local *cp = dev->cnic_priv;
2860         int is_v6, err, rc = -ENETUNREACH;
2861         struct dst_entry *dst;
2862         struct net_device *realdev;
2863         u32 local_port;
2864
2865         if (saddr->local.v6.sin6_family == AF_INET6 &&
2866             saddr->remote.v6.sin6_family == AF_INET6)
2867                 is_v6 = 1;
2868         else if (saddr->local.v4.sin_family == AF_INET &&
2869                  saddr->remote.v4.sin_family == AF_INET)
2870                 is_v6 = 0;
2871         else
2872                 return -EINVAL;
2873
2874         clear_bit(SK_F_IPV6, &csk->flags);
2875
2876         if (is_v6) {
2877 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2878                 set_bit(SK_F_IPV6, &csk->flags);
2879                 err = cnic_get_v6_route(&saddr->remote.v6, &dst);
2880                 if (err)
2881                         return err;
2882
2883                 if (!dst || dst->error || !dst->dev)
2884                         goto err_out;
2885
2886                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
2887                        sizeof(struct in6_addr));
2888                 csk->dst_port = saddr->remote.v6.sin6_port;
2889                 local_port = saddr->local.v6.sin6_port;
2890 #else
2891                 return rc;
2892 #endif
2893
2894         } else {
2895                 err = cnic_get_v4_route(&saddr->remote.v4, &dst);
2896                 if (err)
2897                         return err;
2898
2899                 if (!dst || dst->error || !dst->dev)
2900                         goto err_out;
2901
2902                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
2903                 csk->dst_port = saddr->remote.v4.sin_port;
2904                 local_port = saddr->local.v4.sin_port;
2905         }
2906
2907         csk->vlan_id = cnic_get_vlan(dst->dev, &realdev);
2908         if (realdev != dev->netdev)
2909                 goto err_out;
2910
2911         if (local_port >= CNIC_LOCAL_PORT_MIN &&
2912             local_port < CNIC_LOCAL_PORT_MAX) {
2913                 if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
2914                         local_port = 0;
2915         } else
2916                 local_port = 0;
2917
2918         if (!local_port) {
2919                 local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
2920                 if (local_port == -1) {
2921                         rc = -ENOMEM;
2922                         goto err_out;
2923                 }
2924         }
2925         csk->src_port = local_port;
2926
2927         csk->mtu = dst_mtu(dst);
2928         rc = 0;
2929
2930 err_out:
2931         dst_release(dst);
2932         return rc;
2933 }
2934
2935 static void cnic_init_csk_state(struct cnic_sock *csk)
2936 {
2937         csk->state = 0;
2938         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
2939         clear_bit(SK_F_CLOSING, &csk->flags);
2940 }
2941
2942 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2943 {
2944         int err = 0;
2945
2946         if (!cnic_in_use(csk))
2947                 return -EINVAL;
2948
2949         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
2950                 return -EINVAL;
2951
2952         cnic_init_csk_state(csk);
2953
2954         err = cnic_get_route(csk, saddr);
2955         if (err)
2956                 goto err_out;
2957
2958         err = cnic_resolve_addr(csk, saddr);
2959         if (!err)
2960                 return 0;
2961
2962 err_out:
2963         clear_bit(SK_F_CONNECT_START, &csk->flags);
2964         return err;
2965 }
2966
2967 static int cnic_cm_abort(struct cnic_sock *csk)
2968 {
2969         struct cnic_local *cp = csk->dev->cnic_priv;
2970         u32 opcode;
2971
2972         if (!cnic_in_use(csk))
2973                 return -EINVAL;
2974
2975         if (cnic_abort_prep(csk))
2976                 return cnic_cm_abort_req(csk);
2977
2978         /* Getting here means that we haven't started connect, or
2979          * connect was not successful.
2980          */
2981
2982         csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2983         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
2984                 opcode = csk->state;
2985         else
2986                 opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
2987         cp->close_conn(csk, opcode);
2988
2989         return 0;
2990 }
2991
2992 static int cnic_cm_close(struct cnic_sock *csk)
2993 {
2994         if (!cnic_in_use(csk))
2995                 return -EINVAL;
2996
2997         if (cnic_close_prep(csk)) {
2998                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2999                 return cnic_cm_close_req(csk);
3000         }
3001         return 0;
3002 }
3003
3004 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3005                            u8 opcode)
3006 {
3007         struct cnic_ulp_ops *ulp_ops;
3008         int ulp_type = csk->ulp_type;
3009
3010         rcu_read_lock();
3011         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3012         if (ulp_ops) {
3013                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3014                         ulp_ops->cm_connect_complete(csk);
3015                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3016                         ulp_ops->cm_close_complete(csk);
3017                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3018                         ulp_ops->cm_remote_abort(csk);
3019                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3020                         ulp_ops->cm_abort_complete(csk);
3021                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3022                         ulp_ops->cm_remote_close(csk);
3023         }
3024         rcu_read_unlock();
3025 }
3026
3027 static int cnic_cm_set_pg(struct cnic_sock *csk)
3028 {
3029         if (cnic_offld_prep(csk)) {
3030                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3031                         cnic_cm_update_pg(csk);
3032                 else
3033                         cnic_cm_offload_pg(csk);
3034         }
3035         return 0;
3036 }
3037
3038 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3039 {
3040         struct cnic_local *cp = dev->cnic_priv;
3041         u32 l5_cid = kcqe->pg_host_opaque;
3042         u8 opcode = kcqe->op_code;
3043         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3044
3045         csk_hold(csk);
3046         if (!cnic_in_use(csk))
3047                 goto done;
3048
3049         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3050                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3051                 goto done;
3052         }
3053         csk->pg_cid = kcqe->pg_cid;
3054         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3055         cnic_cm_conn_req(csk);
3056
3057 done:
3058         csk_put(csk);
3059 }
3060
3061 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3062 {
3063         struct cnic_local *cp = dev->cnic_priv;
3064         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3065         u8 opcode = l4kcqe->op_code;
3066         u32 l5_cid;
3067         struct cnic_sock *csk;
3068
3069         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3070             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3071                 cnic_cm_process_offld_pg(dev, l4kcqe);
3072                 return;
3073         }
3074
3075         l5_cid = l4kcqe->conn_id;
3076         if (opcode & 0x80)
3077                 l5_cid = l4kcqe->cid;
3078         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3079                 return;
3080
3081         csk = &cp->csk_tbl[l5_cid];
3082         csk_hold(csk);
3083
3084         if (!cnic_in_use(csk)) {
3085                 csk_put(csk);
3086                 return;
3087         }
3088
3089         switch (opcode) {
3090         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3091                 if (l4kcqe->status == 0)
3092                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3093
3094                 smp_mb__before_clear_bit();
3095                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3096                 cnic_cm_upcall(cp, csk, opcode);
3097                 break;
3098
3099         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3100                 if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags))
3101                         csk->state = opcode;
3102                 /* fall through */
3103         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3104         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3105         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3106         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3107                 cp->close_conn(csk, opcode);
3108                 break;
3109
3110         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3111                 cnic_cm_upcall(cp, csk, opcode);
3112                 break;
3113         }
3114         csk_put(csk);
3115 }
3116
3117 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3118 {
3119         struct cnic_dev *dev = data;
3120         int i;
3121
3122         for (i = 0; i < num; i++)
3123                 cnic_cm_process_kcqe(dev, kcqe[i]);
3124 }
3125
3126 static struct cnic_ulp_ops cm_ulp_ops = {
3127         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3128 };
3129
3130 static void cnic_cm_free_mem(struct cnic_dev *dev)
3131 {
3132         struct cnic_local *cp = dev->cnic_priv;
3133
3134         kfree(cp->csk_tbl);
3135         cp->csk_tbl = NULL;
3136         cnic_free_id_tbl(&cp->csk_port_tbl);
3137 }
3138
3139 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3140 {
3141         struct cnic_local *cp = dev->cnic_priv;
3142
3143         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3144                               GFP_KERNEL);
3145         if (!cp->csk_tbl)
3146                 return -ENOMEM;
3147
3148         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3149                              CNIC_LOCAL_PORT_MIN)) {
3150                 cnic_cm_free_mem(dev);
3151                 return -ENOMEM;
3152         }
3153         return 0;
3154 }
3155
3156 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3157 {
3158         if ((opcode == csk->state) ||
3159             (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED &&
3160              csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) {
3161                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags))
3162                         return 1;
3163         }
3164         return 0;
3165 }
3166
3167 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3168 {
3169         struct cnic_dev *dev = csk->dev;
3170         struct cnic_local *cp = dev->cnic_priv;
3171
3172         clear_bit(SK_F_CONNECT_START, &csk->flags);
3173         if (cnic_ready_to_close(csk, opcode)) {
3174                 cnic_close_conn(csk);
3175                 cnic_cm_upcall(cp, csk, opcode);
3176         }
3177 }
3178
3179 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3180 {
3181 }
3182
3183 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3184 {
3185         u32 seed;
3186
3187         get_random_bytes(&seed, 4);
3188         cnic_ctx_wr(dev, 45, 0, seed);
3189         return 0;
3190 }
3191
3192 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3193 {
3194         struct cnic_dev *dev = csk->dev;
3195         struct cnic_local *cp = dev->cnic_priv;
3196         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3197         union l5cm_specific_data l5_data;
3198         u32 cmd = 0;
3199         int close_complete = 0;
3200
3201         switch (opcode) {
3202         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3203         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3204         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3205                 if (cnic_ready_to_close(csk, opcode))
3206                         cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3207                 break;
3208         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3209                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3210                 break;
3211         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3212                 close_complete = 1;
3213                 break;
3214         }
3215         if (cmd) {
3216                 memset(&l5_data, 0, sizeof(l5_data));
3217
3218                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3219                                     &l5_data);
3220         } else if (close_complete) {
3221                 ctx->timestamp = jiffies;
3222                 cnic_close_conn(csk);
3223                 cnic_cm_upcall(cp, csk, csk->state);
3224         }
3225 }
3226
3227 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3228 {
3229 }
3230
3231 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3232 {
3233         struct cnic_local *cp = dev->cnic_priv;
3234         int func = CNIC_FUNC(cp);
3235
3236         cnic_init_bnx2x_mac(dev);
3237         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3238
3239         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3240                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(func), 0);
3241
3242         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3243                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(func), 1);
3244         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3245                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(func),
3246                 DEF_MAX_DA_COUNT);
3247
3248         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3249                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(func), DEF_TTL);
3250         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3251                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(func), DEF_TOS);
3252         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3253                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(func), 2);
3254         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3255                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(func), DEF_SWS_TIMER);
3256
3257         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(func),
3258                 DEF_MAX_CWND);
3259         return 0;
3260 }
3261
3262 static int cnic_cm_open(struct cnic_dev *dev)
3263 {
3264         struct cnic_local *cp = dev->cnic_priv;
3265         int err;
3266
3267         err = cnic_cm_alloc_mem(dev);
3268         if (err)
3269                 return err;
3270
3271         err = cp->start_cm(dev);
3272
3273         if (err)
3274                 goto err_out;
3275
3276         dev->cm_create = cnic_cm_create;
3277         dev->cm_destroy = cnic_cm_destroy;
3278         dev->cm_connect = cnic_cm_connect;
3279         dev->cm_abort = cnic_cm_abort;
3280         dev->cm_close = cnic_cm_close;
3281         dev->cm_select_dev = cnic_cm_select_dev;
3282
3283         cp->ulp_handle[CNIC_ULP_L4] = dev;
3284         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
3285         return 0;
3286
3287 err_out:
3288         cnic_cm_free_mem(dev);
3289         return err;
3290 }
3291
3292 static int cnic_cm_shutdown(struct cnic_dev *dev)
3293 {
3294         struct cnic_local *cp = dev->cnic_priv;
3295         int i;
3296
3297         cp->stop_cm(dev);
3298
3299         if (!cp->csk_tbl)
3300                 return 0;
3301
3302         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
3303                 struct cnic_sock *csk = &cp->csk_tbl[i];
3304
3305                 clear_bit(SK_F_INUSE, &csk->flags);
3306                 cnic_cm_cleanup(csk);
3307         }
3308         cnic_cm_free_mem(dev);
3309
3310         return 0;
3311 }
3312
3313 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
3314 {
3315         struct cnic_local *cp = dev->cnic_priv;
3316         u32 cid_addr;
3317         int i;
3318
3319         if (CHIP_NUM(cp) == CHIP_NUM_5709)
3320                 return;
3321
3322         cid_addr = GET_CID_ADDR(cid);
3323
3324         for (i = 0; i < CTX_SIZE; i += 4)
3325                 cnic_ctx_wr(dev, cid_addr, i, 0);
3326 }
3327
3328 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
3329 {
3330         struct cnic_local *cp = dev->cnic_priv;
3331         int ret = 0, i;
3332         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
3333
3334         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3335                 return 0;
3336
3337         for (i = 0; i < cp->ctx_blks; i++) {
3338                 int j;
3339                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
3340                 u32 val;
3341
3342                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
3343
3344                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
3345                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
3346                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
3347                         (u64) cp->ctx_arr[i].mapping >> 32);
3348                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
3349                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
3350                 for (j = 0; j < 10; j++) {
3351
3352                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
3353                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
3354                                 break;
3355                         udelay(5);
3356                 }
3357                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
3358                         ret = -EBUSY;
3359                         break;
3360                 }
3361         }
3362         return ret;
3363 }
3364
3365 static void cnic_free_irq(struct cnic_dev *dev)
3366 {
3367         struct cnic_local *cp = dev->cnic_priv;
3368         struct cnic_eth_dev *ethdev = cp->ethdev;
3369
3370         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3371                 cp->disable_int_sync(dev);
3372                 tasklet_disable(&cp->cnic_irq_task);
3373                 free_irq(ethdev->irq_arr[0].vector, dev);
3374         }
3375 }
3376
3377 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
3378 {
3379         struct cnic_local *cp = dev->cnic_priv;
3380         struct cnic_eth_dev *ethdev = cp->ethdev;
3381
3382         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3383                 int err, i = 0;
3384                 int sblk_num = cp->status_blk_num;
3385                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
3386                            BNX2_HC_SB_CONFIG_1;
3387
3388                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
3389
3390                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
3391                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
3392                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
3393
3394                 cp->bnx2_status_blk = cp->status_blk;
3395                 cp->last_status_idx = cp->bnx2_status_blk->status_idx;
3396                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
3397                              (unsigned long) dev);
3398                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3399                                   "cnic", dev);
3400                 if (err) {
3401                         tasklet_disable(&cp->cnic_irq_task);
3402                         return err;
3403                 }
3404                 while (cp->bnx2_status_blk->status_completion_producer_index &&
3405                        i < 10) {
3406                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
3407                                 1 << (11 + sblk_num));
3408                         udelay(10);
3409                         i++;
3410                         barrier();
3411                 }
3412                 if (cp->bnx2_status_blk->status_completion_producer_index) {
3413                         cnic_free_irq(dev);
3414                         goto failed;
3415                 }
3416
3417         } else {
3418                 struct status_block *sblk = cp->status_blk;
3419                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
3420                 int i = 0;
3421
3422                 while (sblk->status_completion_producer_index && i < 10) {
3423                         CNIC_WR(dev, BNX2_HC_COMMAND,
3424                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
3425                         udelay(10);
3426                         i++;
3427                         barrier();
3428                 }
3429                 if (sblk->status_completion_producer_index)
3430                         goto failed;
3431
3432         }
3433         return 0;
3434
3435 failed:
3436         printk(KERN_ERR PFX "%s: " "KCQ index not resetting to 0.\n",
3437                dev->netdev->name);
3438         return -EBUSY;
3439 }
3440
3441 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
3442 {
3443         struct cnic_local *cp = dev->cnic_priv;
3444         struct cnic_eth_dev *ethdev = cp->ethdev;
3445
3446         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3447                 return;
3448
3449         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3450                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3451 }
3452
3453 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
3454 {
3455         struct cnic_local *cp = dev->cnic_priv;
3456         struct cnic_eth_dev *ethdev = cp->ethdev;
3457
3458         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3459                 return;
3460
3461         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3462                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
3463         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
3464         synchronize_irq(ethdev->irq_arr[0].vector);
3465 }
3466
3467 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
3468 {
3469         struct cnic_local *cp = dev->cnic_priv;
3470         struct cnic_eth_dev *ethdev = cp->ethdev;
3471         u32 cid_addr, tx_cid, sb_id;
3472         u32 val, offset0, offset1, offset2, offset3;
3473         int i;
3474         struct tx_bd *txbd;
3475         dma_addr_t buf_map;
3476         struct status_block *s_blk = cp->status_blk;
3477
3478         sb_id = cp->status_blk_num;
3479         tx_cid = 20;
3480         cnic_init_context(dev, tx_cid);
3481         cnic_init_context(dev, tx_cid + 1);
3482         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
3483         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3484                 struct status_block_msix *sblk = cp->status_blk;
3485
3486                 tx_cid = TX_TSS_CID + sb_id - 1;
3487                 cnic_init_context(dev, tx_cid);
3488                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
3489                         (TX_TSS_CID << 7));
3490                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
3491         }
3492         cp->tx_cons = *cp->tx_cons_ptr;
3493
3494         cid_addr = GET_CID_ADDR(tx_cid);
3495         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
3496                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
3497
3498                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
3499                         cnic_ctx_wr(dev, cid_addr2, i, 0);
3500
3501                 offset0 = BNX2_L2CTX_TYPE_XI;
3502                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
3503                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
3504                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
3505         } else {
3506                 offset0 = BNX2_L2CTX_TYPE;
3507                 offset1 = BNX2_L2CTX_CMD_TYPE;
3508                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
3509                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
3510         }
3511         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
3512         cnic_ctx_wr(dev, cid_addr, offset0, val);
3513
3514         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
3515         cnic_ctx_wr(dev, cid_addr, offset1, val);
3516
3517         txbd = (struct tx_bd *) cp->l2_ring;
3518
3519         buf_map = cp->l2_buf_map;
3520         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
3521                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
3522                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3523         }
3524         val = (u64) cp->l2_ring_map >> 32;
3525         cnic_ctx_wr(dev, cid_addr, offset2, val);
3526         txbd->tx_bd_haddr_hi = val;
3527
3528         val = (u64) cp->l2_ring_map & 0xffffffff;
3529         cnic_ctx_wr(dev, cid_addr, offset3, val);
3530         txbd->tx_bd_haddr_lo = val;
3531 }
3532
3533 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
3534 {
3535         struct cnic_local *cp = dev->cnic_priv;
3536         struct cnic_eth_dev *ethdev = cp->ethdev;
3537         u32 cid_addr, sb_id, val, coal_reg, coal_val;
3538         int i;
3539         struct rx_bd *rxbd;
3540         struct status_block *s_blk = cp->status_blk;
3541
3542         sb_id = cp->status_blk_num;
3543         cnic_init_context(dev, 2);
3544         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
3545         coal_reg = BNX2_HC_COMMAND;
3546         coal_val = CNIC_RD(dev, coal_reg);
3547         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3548                 struct status_block_msix *sblk = cp->status_blk;
3549
3550                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
3551                 coal_reg = BNX2_HC_COALESCE_NOW;
3552                 coal_val = 1 << (11 + sb_id);
3553         }
3554         i = 0;
3555         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
3556                 CNIC_WR(dev, coal_reg, coal_val);
3557                 udelay(10);
3558                 i++;
3559                 barrier();
3560         }
3561         cp->rx_cons = *cp->rx_cons_ptr;
3562
3563         cid_addr = GET_CID_ADDR(2);
3564         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
3565               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
3566         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
3567
3568         if (sb_id == 0)
3569                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
3570         else
3571                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
3572         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
3573
3574         rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE);
3575         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
3576                 dma_addr_t buf_map;
3577                 int n = (i % cp->l2_rx_ring_size) + 1;
3578
3579                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3580                 rxbd->rx_bd_len = cp->l2_single_buf_size;
3581                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
3582                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
3583                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3584         }
3585         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3586         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
3587         rxbd->rx_bd_haddr_hi = val;
3588
3589         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3590         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
3591         rxbd->rx_bd_haddr_lo = val;
3592
3593         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
3594         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
3595 }
3596
3597 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
3598 {
3599         struct kwqe *wqes[1], l2kwqe;
3600
3601         memset(&l2kwqe, 0, sizeof(l2kwqe));
3602         wqes[0] = &l2kwqe;
3603         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) |
3604                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
3605                                KWQE_OPCODE_SHIFT) | 2;
3606         dev->submit_kwqes(dev, wqes, 1);
3607 }
3608
3609 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
3610 {
3611         struct cnic_local *cp = dev->cnic_priv;
3612         u32 val;
3613
3614         val = cp->func << 2;
3615
3616         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
3617
3618         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3619                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
3620         dev->mac_addr[0] = (u8) (val >> 8);
3621         dev->mac_addr[1] = (u8) val;
3622
3623         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
3624
3625         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3626                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
3627         dev->mac_addr[2] = (u8) (val >> 24);
3628         dev->mac_addr[3] = (u8) (val >> 16);
3629         dev->mac_addr[4] = (u8) (val >> 8);
3630         dev->mac_addr[5] = (u8) val;
3631
3632         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
3633
3634         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
3635         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3636                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
3637
3638         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
3639         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
3640         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
3641 }
3642
3643 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
3644 {
3645         struct cnic_local *cp = dev->cnic_priv;
3646         struct cnic_eth_dev *ethdev = cp->ethdev;
3647         struct status_block *sblk = cp->status_blk;
3648         u32 val;
3649         int err;
3650
3651         cnic_set_bnx2_mac(dev);
3652
3653         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
3654         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
3655         if (BCM_PAGE_BITS > 12)
3656                 val |= (12 - 8)  << 4;
3657         else
3658                 val |= (BCM_PAGE_BITS - 8)  << 4;
3659
3660         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
3661
3662         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
3663         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
3664         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
3665
3666         err = cnic_setup_5709_context(dev, 1);
3667         if (err)
3668                 return err;
3669
3670         cnic_init_context(dev, KWQ_CID);
3671         cnic_init_context(dev, KCQ_CID);
3672
3673         cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
3674         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
3675
3676         cp->max_kwq_idx = MAX_KWQ_IDX;
3677         cp->kwq_prod_idx = 0;
3678         cp->kwq_con_idx = 0;
3679         cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT;
3680
3681         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
3682                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
3683         else
3684                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
3685
3686         /* Initialize the kernel work queue context. */
3687         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3688               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3689         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val);
3690
3691         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
3692         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3693
3694         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
3695         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3696
3697         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
3698         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3699
3700         val = (u32) cp->kwq_info.pgtbl_map;
3701         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3702
3703         cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
3704         cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
3705
3706         cp->kcq_prod_idx = 0;
3707
3708         /* Initialize the kernel complete queue context. */
3709         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3710               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3711         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val);
3712
3713         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
3714         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3715
3716         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
3717         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3718
3719         val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32);
3720         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3721
3722         val = (u32) cp->kcq_info.pgtbl_map;
3723         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3724
3725         cp->int_num = 0;
3726         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3727                 u32 sb_id = cp->status_blk_num;
3728                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
3729
3730                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
3731                 cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3732                 cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3733         }
3734
3735         /* Enable Commnad Scheduler notification when we write to the
3736          * host producer index of the kernel contexts. */
3737         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
3738
3739         /* Enable Command Scheduler notification when we write to either
3740          * the Send Queue or Receive Queue producer indexes of the kernel
3741          * bypass contexts. */
3742         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
3743         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
3744
3745         /* Notify COM when the driver post an application buffer. */
3746         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
3747
3748         /* Set the CP and COM doorbells.  These two processors polls the
3749          * doorbell for a non zero value before running.  This must be done
3750          * after setting up the kernel queue contexts. */
3751         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
3752         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
3753
3754         cnic_init_bnx2_tx_ring(dev);
3755         cnic_init_bnx2_rx_ring(dev);
3756
3757         err = cnic_init_bnx2_irq(dev);
3758         if (err) {
3759                 printk(KERN_ERR PFX "%s: cnic_init_irq failed\n",
3760                        dev->netdev->name);
3761                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
3762                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
3763                 return err;
3764         }
3765
3766         return 0;
3767 }
3768
3769 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
3770 {
3771         struct cnic_local *cp = dev->cnic_priv;
3772         struct cnic_eth_dev *ethdev = cp->ethdev;
3773         u32 start_offset = ethdev->ctx_tbl_offset;
3774         int i;
3775
3776         for (i = 0; i < cp->ctx_blks; i++) {
3777                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
3778                 dma_addr_t map = ctx->mapping;
3779
3780                 if (cp->ctx_align) {
3781                         unsigned long mask = cp->ctx_align - 1;
3782
3783                         map = (map + mask) & ~mask;
3784                 }
3785
3786                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
3787         }
3788 }
3789
3790 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
3791 {
3792         struct cnic_local *cp = dev->cnic_priv;
3793         struct cnic_eth_dev *ethdev = cp->ethdev;
3794         int err = 0;
3795
3796         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
3797                      (unsigned long) dev);
3798         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3799                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3800                                   "cnic", dev);
3801                 if (err)
3802                         tasklet_disable(&cp->cnic_irq_task);
3803         }
3804         return err;
3805 }
3806
3807 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
3808 {
3809         struct cnic_local *cp = dev->cnic_priv;
3810         u8 sb_id = cp->status_blk_num;
3811         int port = CNIC_PORT(cp);
3812
3813         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
3814                  CSTORM_SB_HC_TIMEOUT_C_OFFSET(port, sb_id,
3815                                                HC_INDEX_C_ISCSI_EQ_CONS),
3816                  64 / 12);
3817         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
3818                   CSTORM_SB_HC_DISABLE_C_OFFSET(port, sb_id,
3819                                                 HC_INDEX_C_ISCSI_EQ_CONS), 0);
3820 }
3821
3822 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
3823 {
3824 }
3825
3826 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev)
3827 {
3828         struct cnic_local *cp = dev->cnic_priv;
3829         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) cp->l2_ring;
3830         struct eth_context *context;
3831         struct regpair context_addr;
3832         dma_addr_t buf_map;
3833         int func = CNIC_FUNC(cp);
3834         int port = CNIC_PORT(cp);
3835         int i;
3836         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3837         u32 val;
3838
3839         memset(txbd, 0, BCM_PAGE_SIZE);
3840
3841         buf_map = cp->l2_buf_map;
3842         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
3843                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
3844                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
3845
3846                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3847                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3848                 reg_bd->addr_hi = start_bd->addr_hi;
3849                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
3850                 start_bd->nbytes = cpu_to_le16(0x10);
3851                 start_bd->nbd = cpu_to_le16(3);
3852                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
3853                 start_bd->general_data = (UNICAST_ADDRESS <<
3854                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
3855                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
3856
3857         }
3858         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 1, &context_addr);
3859
3860         val = (u64) cp->l2_ring_map >> 32;
3861         txbd->next_bd.addr_hi = cpu_to_le32(val);
3862
3863         context->xstorm_st_context.tx_bd_page_base_hi = val;
3864
3865         val = (u64) cp->l2_ring_map & 0xffffffff;
3866         txbd->next_bd.addr_lo = cpu_to_le32(val);
3867
3868         context->xstorm_st_context.tx_bd_page_base_lo = val;
3869
3870         context->cstorm_st_context.sb_index_number =
3871                 HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS;
3872         context->cstorm_st_context.status_block_id = BNX2X_DEF_SB_ID;
3873
3874         context->xstorm_st_context.statistics_data = (cli |
3875                                 XSTORM_ETH_ST_CONTEXT_STATISTICS_ENABLE);
3876
3877         context->xstorm_ag_context.cdu_reserved =
3878                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3879                                         CDU_REGION_NUMBER_XCM_AG,
3880                                         ETH_CONNECTION_TYPE);
3881
3882         /* reset xstorm per client statistics */
3883         val = BAR_XSTRORM_INTMEM +
3884               XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3885         for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
3886                 CNIC_WR(dev, val + i * 4, 0);
3887
3888         cp->tx_cons_ptr =
3889                 &cp->bnx2x_def_status_blk->c_def_status_block.index_values[
3890                         HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS];
3891 }
3892
3893 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev)
3894 {
3895         struct cnic_local *cp = dev->cnic_priv;
3896         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (cp->l2_ring +
3897                                 BCM_PAGE_SIZE);
3898         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
3899                                 (cp->l2_ring + (2 * BCM_PAGE_SIZE));
3900         struct eth_context *context;
3901         struct regpair context_addr;
3902         int i;
3903         int port = CNIC_PORT(cp);
3904         int func = CNIC_FUNC(cp);
3905         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3906         u32 val;
3907         struct tstorm_eth_client_config tstorm_client = {0};
3908
3909         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
3910                 dma_addr_t buf_map;
3911                 int n = (i % cp->l2_rx_ring_size) + 1;
3912
3913                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3914                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3915                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3916         }
3917         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 0, &context_addr);
3918
3919         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3920         rxbd->addr_hi = cpu_to_le32(val);
3921
3922         context->ustorm_st_context.common.bd_page_base_hi = val;
3923
3924         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3925         rxbd->addr_lo = cpu_to_le32(val);
3926
3927         context->ustorm_st_context.common.bd_page_base_lo = val;
3928
3929         context->ustorm_st_context.common.sb_index_numbers =
3930                                                 BNX2X_ISCSI_RX_SB_INDEX_NUM;
3931         context->ustorm_st_context.common.clientId = cli;
3932         context->ustorm_st_context.common.status_block_id = BNX2X_DEF_SB_ID;
3933         context->ustorm_st_context.common.flags =
3934                 USTORM_ETH_ST_CONTEXT_CONFIG_ENABLE_STATISTICS;
3935         context->ustorm_st_context.common.statistics_counter_id = cli;
3936         context->ustorm_st_context.common.mc_alignment_log_size = 0;
3937         context->ustorm_st_context.common.bd_buff_size =
3938                                                 cp->l2_single_buf_size;
3939
3940         context->ustorm_ag_context.cdu_usage =
3941                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3942                                         CDU_REGION_NUMBER_UCM_AG,
3943                                         ETH_CONNECTION_TYPE);
3944
3945         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
3946         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
3947         rxcqe->addr_hi = cpu_to_le32(val);
3948
3949         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3950                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli) + 4, val);
3951
3952         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3953                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli) + 4, val);
3954
3955         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
3956         rxcqe->addr_lo = cpu_to_le32(val);
3957
3958         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3959                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli), val);
3960
3961         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3962                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli), val);
3963
3964         /* client tstorm info */
3965         tstorm_client.mtu = cp->l2_single_buf_size - 14;
3966         tstorm_client.config_flags =
3967                         (TSTORM_ETH_CLIENT_CONFIG_E1HOV_REM_ENABLE |
3968                         TSTORM_ETH_CLIENT_CONFIG_STATSITICS_ENABLE);
3969         tstorm_client.statistics_counter_id = cli;
3970
3971         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
3972                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli),
3973                    ((u32 *)&tstorm_client)[0]);
3974         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
3975                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli) + 4,
3976                    ((u32 *)&tstorm_client)[1]);
3977
3978         /* reset tstorm per client statistics */
3979         val = BAR_TSTRORM_INTMEM +
3980               TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3981         for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
3982                 CNIC_WR(dev, val + i * 4, 0);
3983
3984         /* reset ustorm per client statistics */
3985         val = BAR_USTRORM_INTMEM +
3986               USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3987         for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
3988                 CNIC_WR(dev, val + i * 4, 0);
3989
3990         cp->rx_cons_ptr =
3991                 &cp->bnx2x_def_status_blk->u_def_status_block.index_values[
3992                         HC_INDEX_DEF_U_ETH_ISCSI_RX_CQ_CONS];
3993 }
3994
3995 static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
3996 {
3997         struct cnic_local *cp = dev->cnic_priv;
3998         u32 base, addr, val;
3999         int port = CNIC_PORT(cp);
4000
4001         dev->max_iscsi_conn = 0;
4002         base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
4003         if (base < 0xa0000 || base >= 0xc0000)
4004                 return;
4005
4006         addr = BNX2X_SHMEM_ADDR(base,
4007                 dev_info.port_hw_config[port].iscsi_mac_upper);
4008
4009         val = CNIC_RD(dev, addr);
4010
4011         dev->mac_addr[0] = (u8) (val >> 8);
4012         dev->mac_addr[1] = (u8) val;
4013
4014         addr = BNX2X_SHMEM_ADDR(base,
4015                 dev_info.port_hw_config[port].iscsi_mac_lower);
4016
4017         val = CNIC_RD(dev, addr);
4018
4019         dev->mac_addr[2] = (u8) (val >> 24);
4020         dev->mac_addr[3] = (u8) (val >> 16);
4021         dev->mac_addr[4] = (u8) (val >> 8);
4022         dev->mac_addr[5] = (u8) val;
4023
4024         addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
4025         val = CNIC_RD(dev, addr);
4026
4027         if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
4028                 u16 val16;
4029
4030                 addr = BNX2X_SHMEM_ADDR(base,
4031                                 drv_lic_key[port].max_iscsi_init_conn);
4032                 val16 = CNIC_RD16(dev, addr);
4033
4034                 if (val16)
4035                         val16 ^= 0x1e1e;
4036                 dev->max_iscsi_conn = val16;
4037         }
4038         if (BNX2X_CHIP_IS_E1H(cp->chip_id)) {
4039                 int func = CNIC_FUNC(cp);
4040
4041                 addr = BNX2X_SHMEM_ADDR(base,
4042                                 mf_cfg.func_mf_config[func].e1hov_tag);
4043                 val = CNIC_RD(dev, addr);
4044                 val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
4045                 if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
4046                         addr = BNX2X_SHMEM_ADDR(base,
4047                                 mf_cfg.func_mf_config[func].config);
4048                         val = CNIC_RD(dev, addr);
4049                         val &= FUNC_MF_CFG_PROTOCOL_MASK;
4050                         if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
4051                                 dev->max_iscsi_conn = 0;
4052                 }
4053         }
4054 }
4055
4056 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4057 {
4058         struct cnic_local *cp = dev->cnic_priv;
4059         int func = CNIC_FUNC(cp), ret, i;
4060         int port = CNIC_PORT(cp);
4061         u16 eq_idx;
4062         u8 sb_id = cp->status_blk_num;
4063
4064         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4065                                BNX2X_ISCSI_START_CID);
4066
4067         if (ret)
4068                 return -ENOMEM;
4069
4070         cp->kcq_io_addr = BAR_CSTRORM_INTMEM +
4071                           CSTORM_ISCSI_EQ_PROD_OFFSET(func, 0);
4072         cp->kcq_prod_idx = 0;
4073
4074         cnic_get_bnx2x_iscsi_info(dev);
4075
4076         /* Only 1 EQ */
4077         CNIC_WR16(dev, cp->kcq_io_addr, MAX_KCQ_IDX);
4078         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4079                 CSTORM_ISCSI_EQ_CONS_OFFSET(func, 0), 0);
4080         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4081                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0),
4082                 cp->kcq_info.pg_map_arr[1] & 0xffffffff);
4083         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4084                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0) + 4,
4085                 (u64) cp->kcq_info.pg_map_arr[1] >> 32);
4086         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4087                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0),
4088                 cp->kcq_info.pg_map_arr[0] & 0xffffffff);
4089         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4090                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0) + 4,
4091                 (u64) cp->kcq_info.pg_map_arr[0] >> 32);
4092         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4093                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(func, 0), 1);
4094         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4095                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(func, 0), cp->status_blk_num);
4096         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4097                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(func, 0),
4098                 HC_INDEX_C_ISCSI_EQ_CONS);
4099
4100         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4101                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4102                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i),
4103                         cp->conn_buf_info.pgtbl[2 * i]);
4104                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4105                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i) + 4,
4106                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4107         }
4108
4109         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4110                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func),
4111                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4112         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4113                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func) + 4,
4114                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4115
4116         cnic_setup_bnx2x_context(dev);
4117
4118         eq_idx = CNIC_RD16(dev, BAR_CSTRORM_INTMEM +
4119                            CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4120                            offsetof(struct cstorm_status_block_c,
4121                                     index_values[HC_INDEX_C_ISCSI_EQ_CONS]));
4122         if (eq_idx != 0) {
4123                 printk(KERN_ERR PFX "%s: EQ cons index %x != 0\n",
4124                        dev->netdev->name, eq_idx);
4125                 return -EBUSY;
4126         }
4127         ret = cnic_init_bnx2x_irq(dev);
4128         if (ret)
4129                 return ret;
4130
4131         cnic_init_bnx2x_tx_ring(dev);
4132         cnic_init_bnx2x_rx_ring(dev);
4133
4134         return 0;
4135 }
4136
4137 static void cnic_init_rings(struct cnic_dev *dev)
4138 {
4139         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4140                 cnic_init_bnx2_tx_ring(dev);
4141                 cnic_init_bnx2_rx_ring(dev);
4142         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4143                 struct cnic_local *cp = dev->cnic_priv;
4144                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4145                 union l5cm_specific_data l5_data;
4146                 struct ustorm_eth_rx_producers rx_prods = {0};
4147                 u32 off, i;
4148
4149                 rx_prods.bd_prod = 0;
4150                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4151                 barrier();
4152
4153                 off = BAR_USTRORM_INTMEM +
4154                         USTORM_RX_PRODS_OFFSET(CNIC_PORT(cp), cli);
4155
4156                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4157                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4158
4159                 cnic_init_bnx2x_tx_ring(dev);
4160                 cnic_init_bnx2x_rx_ring(dev);
4161
4162                 l5_data.phy_address.lo = cli;
4163                 l5_data.phy_address.hi = 0;
4164                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4165                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4166                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
4167         }
4168 }
4169
4170 static void cnic_shutdown_rings(struct cnic_dev *dev)
4171 {
4172         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4173                 cnic_shutdown_bnx2_rx_ring(dev);
4174         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4175                 struct cnic_local *cp = dev->cnic_priv;
4176                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4177                 union l5cm_specific_data l5_data;
4178
4179                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0);
4180
4181                 l5_data.phy_address.lo = cli;
4182                 l5_data.phy_address.hi = 0;
4183                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4184                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4185                 msleep(10);
4186         }
4187 }
4188
4189 static int cnic_register_netdev(struct cnic_dev *dev)
4190 {
4191         struct cnic_local *cp = dev->cnic_priv;
4192         struct cnic_eth_dev *ethdev = cp->ethdev;
4193         int err;
4194
4195         if (!ethdev)
4196                 return -ENODEV;
4197
4198         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
4199                 return 0;
4200
4201         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4202         if (err)
4203                 printk(KERN_ERR PFX "%s: register_cnic failed\n",
4204                        dev->netdev->name);
4205
4206         return err;
4207 }
4208
4209 static void cnic_unregister_netdev(struct cnic_dev *dev)
4210 {
4211         struct cnic_local *cp = dev->cnic_priv;
4212         struct cnic_eth_dev *ethdev = cp->ethdev;
4213
4214         if (!ethdev)
4215                 return;
4216
4217         ethdev->drv_unregister_cnic(dev->netdev);
4218 }
4219
4220 static int cnic_start_hw(struct cnic_dev *dev)
4221 {
4222         struct cnic_local *cp = dev->cnic_priv;
4223         struct cnic_eth_dev *ethdev = cp->ethdev;
4224         int err;
4225
4226         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
4227                 return -EALREADY;
4228
4229         dev->regview = ethdev->io_base;
4230         cp->chip_id = ethdev->chip_id;
4231         pci_dev_get(dev->pcidev);
4232         cp->func = PCI_FUNC(dev->pcidev->devfn);
4233         cp->status_blk = ethdev->irq_arr[0].status_blk;
4234         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
4235
4236         err = cp->alloc_resc(dev);
4237         if (err) {
4238                 printk(KERN_ERR PFX "%s: allocate resource failure\n",
4239                        dev->netdev->name);
4240                 goto err1;
4241         }
4242
4243         err = cp->start_hw(dev);
4244         if (err)
4245                 goto err1;
4246
4247         err = cnic_cm_open(dev);
4248         if (err)
4249                 goto err1;
4250
4251         set_bit(CNIC_F_CNIC_UP, &dev->flags);
4252
4253         cp->enable_int(dev);
4254
4255         return 0;
4256
4257 err1:
4258         cp->free_resc(dev);
4259         pci_dev_put(dev->pcidev);
4260         return err;
4261 }
4262
4263 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
4264 {
4265         cnic_disable_bnx2_int_sync(dev);
4266
4267         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4268         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4269
4270         cnic_init_context(dev, KWQ_CID);
4271         cnic_init_context(dev, KCQ_CID);
4272
4273         cnic_setup_5709_context(dev, 0);
4274         cnic_free_irq(dev);
4275
4276         cnic_free_resc(dev);
4277 }
4278
4279
4280 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
4281 {
4282         struct cnic_local *cp = dev->cnic_priv;
4283         u8 sb_id = cp->status_blk_num;
4284         int port = CNIC_PORT(cp);
4285
4286         cnic_free_irq(dev);
4287         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4288                   CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4289                   offsetof(struct cstorm_status_block_c,
4290                            index_values[HC_INDEX_C_ISCSI_EQ_CONS]),
4291                   0);
4292         cnic_free_resc(dev);
4293 }
4294
4295 static void cnic_stop_hw(struct cnic_dev *dev)
4296 {
4297         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4298                 struct cnic_local *cp = dev->cnic_priv;
4299
4300                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
4301                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
4302                 synchronize_rcu();
4303                 cnic_cm_shutdown(dev);
4304                 cp->stop_hw(dev);
4305                 pci_dev_put(dev->pcidev);
4306         }
4307 }
4308
4309 static void cnic_free_dev(struct cnic_dev *dev)
4310 {
4311         int i = 0;
4312
4313         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
4314                 msleep(100);
4315                 i++;
4316         }
4317         if (atomic_read(&dev->ref_count) != 0)
4318                 printk(KERN_ERR PFX "%s: Failed waiting for ref count to go"
4319                                     " to zero.\n", dev->netdev->name);
4320
4321         printk(KERN_INFO PFX "Removed CNIC device: %s\n", dev->netdev->name);
4322         dev_put(dev->netdev);
4323         kfree(dev);
4324 }
4325
4326 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
4327                                        struct pci_dev *pdev)
4328 {
4329         struct cnic_dev *cdev;
4330         struct cnic_local *cp;
4331         int alloc_size;
4332
4333         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
4334
4335         cdev = kzalloc(alloc_size , GFP_KERNEL);
4336         if (cdev == NULL) {
4337                 printk(KERN_ERR PFX "%s: allocate dev struct failure\n",
4338                        dev->name);
4339                 return NULL;
4340         }
4341
4342         cdev->netdev = dev;
4343         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
4344         cdev->register_device = cnic_register_device;
4345         cdev->unregister_device = cnic_unregister_device;
4346         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
4347
4348         cp = cdev->cnic_priv;
4349         cp->dev = cdev;
4350         cp->uio_dev = -1;
4351         cp->l2_single_buf_size = 0x400;
4352         cp->l2_rx_ring_size = 3;
4353
4354         spin_lock_init(&cp->cnic_ulp_lock);
4355
4356         printk(KERN_INFO PFX "Added CNIC device: %s\n", dev->name);
4357
4358         return cdev;
4359 }
4360
4361 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
4362 {
4363         struct pci_dev *pdev;
4364         struct cnic_dev *cdev;
4365         struct cnic_local *cp;
4366         struct cnic_eth_dev *ethdev = NULL;
4367         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4368
4369         probe = symbol_get(bnx2_cnic_probe);
4370         if (probe) {
4371                 ethdev = (*probe)(dev);
4372                 symbol_put(bnx2_cnic_probe);
4373         }
4374         if (!ethdev)
4375                 return NULL;
4376
4377         pdev = ethdev->pdev;
4378         if (!pdev)
4379                 return NULL;
4380
4381         dev_hold(dev);
4382         pci_dev_get(pdev);
4383         if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
4384             pdev->device == PCI_DEVICE_ID_NX2_5709S) {
4385                 u8 rev;
4386
4387                 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
4388                 if (rev < 0x10) {
4389                         pci_dev_put(pdev);
4390                         goto cnic_err;
4391                 }
4392         }
4393         pci_dev_put(pdev);
4394
4395         cdev = cnic_alloc_dev(dev, pdev);
4396         if (cdev == NULL)
4397                 goto cnic_err;
4398
4399         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
4400         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
4401
4402         cp = cdev->cnic_priv;
4403         cp->ethdev = ethdev;
4404         cdev->pcidev = pdev;
4405
4406         cp->cnic_ops = &cnic_bnx2_ops;
4407         cp->start_hw = cnic_start_bnx2_hw;
4408         cp->stop_hw = cnic_stop_bnx2_hw;
4409         cp->setup_pgtbl = cnic_setup_page_tbl;
4410         cp->alloc_resc = cnic_alloc_bnx2_resc;
4411         cp->free_resc = cnic_free_resc;
4412         cp->start_cm = cnic_cm_init_bnx2_hw;
4413         cp->stop_cm = cnic_cm_stop_bnx2_hw;
4414         cp->enable_int = cnic_enable_bnx2_int;
4415         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
4416         cp->close_conn = cnic_close_bnx2_conn;
4417         cp->next_idx = cnic_bnx2_next_idx;
4418         cp->hw_idx = cnic_bnx2_hw_idx;
4419         return cdev;
4420
4421 cnic_err:
4422         dev_put(dev);
4423         return NULL;
4424 }
4425
4426 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
4427 {
4428         struct pci_dev *pdev;
4429         struct cnic_dev *cdev;
4430         struct cnic_local *cp;
4431         struct cnic_eth_dev *ethdev = NULL;
4432         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4433
4434         probe = symbol_get(bnx2x_cnic_probe);
4435         if (probe) {
4436                 ethdev = (*probe)(dev);
4437                 symbol_put(bnx2x_cnic_probe);
4438         }
4439         if (!ethdev)
4440                 return NULL;
4441
4442         pdev = ethdev->pdev;
4443         if (!pdev)
4444                 return NULL;
4445
4446         dev_hold(dev);
4447         cdev = cnic_alloc_dev(dev, pdev);
4448         if (cdev == NULL) {
4449                 dev_put(dev);
4450                 return NULL;
4451         }
4452
4453         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
4454         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
4455
4456         cp = cdev->cnic_priv;
4457         cp->ethdev = ethdev;
4458         cdev->pcidev = pdev;
4459
4460         cp->cnic_ops = &cnic_bnx2x_ops;
4461         cp->start_hw = cnic_start_bnx2x_hw;
4462         cp->stop_hw = cnic_stop_bnx2x_hw;
4463         cp->setup_pgtbl = cnic_setup_page_tbl_le;
4464         cp->alloc_resc = cnic_alloc_bnx2x_resc;
4465         cp->free_resc = cnic_free_resc;
4466         cp->start_cm = cnic_cm_init_bnx2x_hw;
4467         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
4468         cp->enable_int = cnic_enable_bnx2x_int;
4469         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
4470         cp->ack_int = cnic_ack_bnx2x_msix;
4471         cp->close_conn = cnic_close_bnx2x_conn;
4472         cp->next_idx = cnic_bnx2x_next_idx;
4473         cp->hw_idx = cnic_bnx2x_hw_idx;
4474         return cdev;
4475 }
4476
4477 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
4478 {
4479         struct ethtool_drvinfo drvinfo;
4480         struct cnic_dev *cdev = NULL;
4481
4482         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
4483                 memset(&drvinfo, 0, sizeof(drvinfo));
4484                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
4485
4486                 if (!strcmp(drvinfo.driver, "bnx2"))
4487                         cdev = init_bnx2_cnic(dev);
4488                 if (!strcmp(drvinfo.driver, "bnx2x"))
4489                         cdev = init_bnx2x_cnic(dev);
4490                 if (cdev) {
4491                         write_lock(&cnic_dev_lock);
4492                         list_add(&cdev->list, &cnic_dev_list);
4493                         write_unlock(&cnic_dev_lock);
4494                 }
4495         }
4496         return cdev;
4497 }
4498
4499 /**
4500  * netdev event handler
4501  */
4502 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
4503                                                          void *ptr)
4504 {
4505         struct net_device *netdev = ptr;
4506         struct cnic_dev *dev;
4507         int if_type;
4508         int new_dev = 0;
4509
4510         dev = cnic_from_netdev(netdev);
4511
4512         if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
4513                 /* Check for the hot-plug device */
4514                 dev = is_cnic_dev(netdev);
4515                 if (dev) {
4516                         new_dev = 1;
4517                         cnic_hold(dev);
4518                 }
4519         }
4520         if (dev) {
4521                 struct cnic_local *cp = dev->cnic_priv;
4522
4523                 if (new_dev)
4524                         cnic_ulp_init(dev);
4525                 else if (event == NETDEV_UNREGISTER)
4526                         cnic_ulp_exit(dev);
4527
4528                 if (event == NETDEV_UP) {
4529                         if (cnic_register_netdev(dev) != 0) {
4530                                 cnic_put(dev);
4531                                 goto done;
4532                         }
4533                         if (!cnic_start_hw(dev))
4534                                 cnic_ulp_start(dev);
4535                 }
4536
4537                 rcu_read_lock();
4538                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
4539                         struct cnic_ulp_ops *ulp_ops;
4540                         void *ctx;
4541
4542                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
4543                         if (!ulp_ops || !ulp_ops->indicate_netevent)
4544                                 continue;
4545
4546                         ctx = cp->ulp_handle[if_type];
4547
4548                         ulp_ops->indicate_netevent(ctx, event);
4549                 }
4550                 rcu_read_unlock();
4551
4552                 if (event == NETDEV_GOING_DOWN) {
4553                         cnic_ulp_stop(dev);
4554                         cnic_stop_hw(dev);
4555                         cnic_unregister_netdev(dev);
4556                 } else if (event == NETDEV_UNREGISTER) {
4557                         write_lock(&cnic_dev_lock);
4558                         list_del_init(&dev->list);
4559                         write_unlock(&cnic_dev_lock);
4560
4561                         cnic_put(dev);
4562                         cnic_free_dev(dev);
4563                         goto done;
4564                 }
4565                 cnic_put(dev);
4566         }
4567 done:
4568         return NOTIFY_DONE;
4569 }
4570
4571 static struct notifier_block cnic_netdev_notifier = {
4572         .notifier_call = cnic_netdev_event
4573 };
4574
4575 static void cnic_release(void)
4576 {
4577         struct cnic_dev *dev;
4578
4579         while (!list_empty(&cnic_dev_list)) {
4580                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
4581                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4582                         cnic_ulp_stop(dev);
4583                         cnic_stop_hw(dev);
4584                 }
4585
4586                 cnic_ulp_exit(dev);
4587                 cnic_unregister_netdev(dev);
4588                 list_del_init(&dev->list);
4589                 cnic_free_dev(dev);
4590         }
4591 }
4592
4593 static int __init cnic_init(void)
4594 {
4595         int rc = 0;
4596
4597         printk(KERN_INFO "%s", version);
4598
4599         rc = register_netdevice_notifier(&cnic_netdev_notifier);
4600         if (rc) {
4601                 cnic_release();
4602                 return rc;
4603         }
4604
4605         return 0;
4606 }
4607
4608 static void __exit cnic_exit(void)
4609 {
4610         unregister_netdevice_notifier(&cnic_netdev_notifier);
4611         cnic_release();
4612         return;
4613 }
4614
4615 module_init(cnic_init);
4616 module_exit(cnic_exit);