SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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                         pci_free_consistent(dev->pcidev, 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                 pci_free_consistent(dev->pcidev, 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] = pci_alloc_consistent(dev->pcidev,
 729                                                       BCM_PAGE_SIZE,
 730                                                       &dma->pg_map_arr[i]);
 731                 if (dma->pg_arr[i] == NULL)
 732                         goto error;
 733         }
 734         if (!use_pg_tbl)
 735                 return 0;
 736
 737         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 738                           ~(BCM_PAGE_SIZE - 1);
 739         dma->pgtbl = pci_alloc_consistent(dev->pcidev, dma->pgtbl_size,
 740                                           &dma->pgtbl_map);
 741         if (dma->pgtbl == NULL)
 742                 goto error;
 743
 744         cp->setup_pgtbl(dev, dma);
 745
 746         return 0;
 747
 748 error:
 749         cnic_free_dma(dev, dma);
 750         return -ENOMEM;
 751 }
 752
 753 static void cnic_free_context(struct cnic_dev *dev)
 754 {
 755         struct cnic_local *cp = dev->cnic_priv;
 756         int i;
 757
 758         for (i = 0; i < cp->ctx_blks; i++) {
 759                 if (cp->ctx_arr[i].ctx) {
 760                         pci_free_consistent(dev->pcidev, cp->ctx_blk_size,
 761                                             cp->ctx_arr[i].ctx,
 762                                             cp->ctx_arr[i].mapping);
 763                         cp->ctx_arr[i].ctx = NULL;
 764                 }
 765         }
 766 }
 767
 768 static void cnic_free_resc(struct cnic_dev *dev)
 769 {
 770         struct cnic_local *cp = dev->cnic_priv;
 771         int i = 0;
 772
 773         if (cp->cnic_uinfo) {
 774                 while (cp->uio_dev != -1 && i < 15) {
 775                         msleep(100);
 776                         i++;
 777                 }
 778                 uio_unregister_device(cp->cnic_uinfo);
 779                 kfree(cp->cnic_uinfo);
 780                 cp->cnic_uinfo = NULL;
 781         }
 782
 783         if (cp->l2_buf) {
 784                 pci_free_consistent(dev->pcidev, cp->l2_buf_size,
 785                                     cp->l2_buf, cp->l2_buf_map);
 786                 cp->l2_buf = NULL;
 787         }
 788
 789         if (cp->l2_ring) {
 790                 pci_free_consistent(dev->pcidev, cp->l2_ring_size,
 791                                     cp->l2_ring, cp->l2_ring_map);
 792                 cp->l2_ring = NULL;
 793         }
 794
 795         cnic_free_context(dev);
 796         kfree(cp->ctx_arr);
 797         cp->ctx_arr = NULL;
 798         cp->ctx_blks = 0;
 799
 800         cnic_free_dma(dev, &cp->gbl_buf_info);
 801         cnic_free_dma(dev, &cp->conn_buf_info);
 802         cnic_free_dma(dev, &cp->kwq_info);
 803         cnic_free_dma(dev, &cp->kwq_16_data_info);
 804         cnic_free_dma(dev, &cp->kcq_info);
 805         kfree(cp->iscsi_tbl);
 806         cp->iscsi_tbl = NULL;
 807         kfree(cp->ctx_tbl);
 808         cp->ctx_tbl = NULL;
 809
 810         cnic_free_id_tbl(&cp->cid_tbl);
 811 }
 812
 813 static int cnic_alloc_context(struct cnic_dev *dev)
 814 {
 815         struct cnic_local *cp = dev->cnic_priv;
 816
 817         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 818                 int i, k, arr_size;
 819
 820                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 821                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 822                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 823                            sizeof(struct cnic_ctx);
 824                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 825                 if (cp->ctx_arr == NULL)
 826                         return -ENOMEM;
 827
 828                 k = 0;
 829                 for (i = 0; i < 2; i++) {
 830                         u32 j, reg, off, lo, hi;
 831
 832                         if (i == 0)
 833                                 off = BNX2_PG_CTX_MAP;
 834                         else
 835                                 off = BNX2_ISCSI_CTX_MAP;
 836
 837                         reg = cnic_reg_rd_ind(dev, off);
 838                         lo = reg >> 16;
 839                         hi = reg & 0xffff;
 840                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 841                                 cp->ctx_arr[k].cid = j;
 842                 }
 843
 844                 cp->ctx_blks = k;
 845                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 846                         cp->ctx_blks = 0;
 847                         return -ENOMEM;
 848                 }
 849
 850                 for (i = 0; i < cp->ctx_blks; i++) {
 851                         cp->ctx_arr[i].ctx =
 852                                 pci_alloc_consistent(dev->pcidev, BCM_PAGE_SIZE,
 853                                                      &cp->ctx_arr[i].mapping);
 854                         if (cp->ctx_arr[i].ctx == NULL)
 855                                 return -ENOMEM;
 856                 }
 857         }
 858         return 0;
 859 }
 860
 861 static int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages)
 862 {
 863         struct cnic_local *cp = dev->cnic_priv;
 864
 865         cp->l2_ring_size = pages * BCM_PAGE_SIZE;
 866         cp->l2_ring = pci_alloc_consistent(dev->pcidev, cp->l2_ring_size,
 867                                            &cp->l2_ring_map);
 868         if (!cp->l2_ring)
 869                 return -ENOMEM;
 870
 871         cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
 872         cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size);
 873         cp->l2_buf = pci_alloc_consistent(dev->pcidev, cp->l2_buf_size,
 874                                            &cp->l2_buf_map);
 875         if (!cp->l2_buf)
 876                 return -ENOMEM;
 877
 878         return 0;
 879 }
 880
 881 static int cnic_alloc_uio(struct cnic_dev *dev) {
 882         struct cnic_local *cp = dev->cnic_priv;
 883         struct uio_info *uinfo;
 884         int ret;
 885
 886         uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC);
 887         if (!uinfo)
 888                 return -ENOMEM;
 889
 890         uinfo->mem[0].addr = dev->netdev->base_addr;
 891         uinfo->mem[0].internal_addr = dev->regview;
 892         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
 893         uinfo->mem[0].memtype = UIO_MEM_PHYS;
 894
 895         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
 896                 uinfo->mem[1].addr = (unsigned long) cp->status_blk & PAGE_MASK;
 897                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
 898                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
 899                 else
 900                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
 901
 902                 uinfo->name = "bnx2_cnic";
 903         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
 904                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
 905                         PAGE_MASK;
 906                 uinfo->mem[1].size = sizeof(struct host_def_status_block);
 907
 908                 uinfo->name = "bnx2x_cnic";
 909         }
 910
 911         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 912
 913         uinfo->mem[2].addr = (unsigned long) cp->l2_ring;
 914         uinfo->mem[2].size = cp->l2_ring_size;
 915         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
 916
 917         uinfo->mem[3].addr = (unsigned long) cp->l2_buf;
 918         uinfo->mem[3].size = cp->l2_buf_size;
 919         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
 920
 921         uinfo->version = CNIC_MODULE_VERSION;
 922         uinfo->irq = UIO_IRQ_CUSTOM;
 923
 924         uinfo->open = cnic_uio_open;
 925         uinfo->release = cnic_uio_close;
 926
 927         uinfo->priv = dev;
 928
 929         ret = uio_register_device(&dev->pcidev->dev, uinfo);
 930         if (ret) {
 931                 kfree(uinfo);
 932                 return ret;
 933         }
 934
 935         cp->cnic_uinfo = uinfo;
 936         return 0;
 937 }
 938
 939 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
 940 {
 941         struct cnic_local *cp = dev->cnic_priv;
 942         int ret;
 943
 944         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
 945         if (ret)
 946                 goto error;
 947         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
 948
 949         ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1);
 950         if (ret)
 951                 goto error;
 952         cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
 953
 954         ret = cnic_alloc_context(dev);
 955         if (ret)
 956                 goto error;
 957
 958         ret = cnic_alloc_l2_rings(dev, 2);
 959         if (ret)
 960                 goto error;
 961
 962         ret = cnic_alloc_uio(dev);
 963         if (ret)
 964                 goto error;
 965
 966         return 0;
 967
 968 error:
 969         cnic_free_resc(dev);
 970         return ret;
 971 }
 972
 973 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
 974 {
 975         struct cnic_local *cp = dev->cnic_priv;
 976         struct cnic_eth_dev *ethdev = cp->ethdev;
 977         int ctx_blk_size = cp->ethdev->ctx_blk_size;
 978         int total_mem, blks, i, cid_space;
 979
 980         if (BNX2X_ISCSI_START_CID < ethdev->starting_cid)
 981                 return -EINVAL;
 982
 983         cid_space = MAX_ISCSI_TBL_SZ +
 984                     (BNX2X_ISCSI_START_CID - ethdev->starting_cid);
 985
 986         total_mem = BNX2X_CONTEXT_MEM_SIZE * cid_space;
 987         blks = total_mem / ctx_blk_size;
 988         if (total_mem % ctx_blk_size)
 989                 blks++;
 990
 991         if (blks > cp->ethdev->ctx_tbl_len)
 992                 return -ENOMEM;
 993
 994         cp->ctx_arr = kzalloc(blks * sizeof(struct cnic_ctx), GFP_KERNEL);
 995         if (cp->ctx_arr == NULL)
 996                 return -ENOMEM;
 997
 998         cp->ctx_blks = blks;
 999         cp->ctx_blk_size = ctx_blk_size;
1000         if (BNX2X_CHIP_IS_E1H(cp->chip_id))
1001                 cp->ctx_align = 0;
1002         else
1003                 cp->ctx_align = ctx_blk_size;
1004
1005         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1006
1007         for (i = 0; i < blks; i++) {
1008                 cp->ctx_arr[i].ctx =
1009                         pci_alloc_consistent(dev->pcidev, cp->ctx_blk_size,
1010                                              &cp->ctx_arr[i].mapping);
1011                 if (cp->ctx_arr[i].ctx == NULL)
1012                         return -ENOMEM;
1013
1014                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1015                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1016                                 cnic_free_context(dev);
1017                                 cp->ctx_blk_size += cp->ctx_align;
1018                                 i = -1;
1019                                 continue;
1020                         }
1021                 }
1022         }
1023         return 0;
1024 }
1025
1026 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1027 {
1028         struct cnic_local *cp = dev->cnic_priv;
1029         int i, j, n, ret, pages;
1030         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1031
1032         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1033                                 GFP_KERNEL);
1034         if (!cp->iscsi_tbl)
1035                 goto error;
1036
1037         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1038                                   MAX_CNIC_L5_CONTEXT, GFP_KERNEL);
1039         if (!cp->ctx_tbl)
1040                 goto error;
1041
1042         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1043                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1044                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1045         }
1046
1047         pages = PAGE_ALIGN(MAX_CNIC_L5_CONTEXT * CNIC_KWQ16_DATA_SIZE) /
1048                 PAGE_SIZE;
1049
1050         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1051         if (ret)
1052                 return -ENOMEM;
1053
1054         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1055         for (i = 0, j = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1056                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1057
1058                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1059                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1060                                                    off;
1061
1062                 if ((i % n) == (n - 1))
1063                         j++;
1064         }
1065
1066         ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 0);
1067         if (ret)
1068                 goto error;
1069         cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
1070
1071         for (i = 0; i < KCQ_PAGE_CNT; i++) {
1072                 struct bnx2x_bd_chain_next *next =
1073                         (struct bnx2x_bd_chain_next *)
1074                         &cp->kcq[i][MAX_KCQE_CNT];
1075                 int j = i + 1;
1076
1077                 if (j >= KCQ_PAGE_CNT)
1078                         j = 0;
1079                 next->addr_hi = (u64) cp->kcq_info.pg_map_arr[j] >> 32;
1080                 next->addr_lo = cp->kcq_info.pg_map_arr[j] & 0xffffffff;
1081         }
1082
1083         pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
1084                            BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
1085         ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
1086         if (ret)
1087                 goto error;
1088
1089         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1090         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1091         if (ret)
1092                 goto error;
1093
1094         ret = cnic_alloc_bnx2x_context(dev);
1095         if (ret)
1096                 goto error;
1097
1098         cp->bnx2x_status_blk = cp->status_blk;
1099         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1100
1101         cp->l2_rx_ring_size = 15;
1102
1103         ret = cnic_alloc_l2_rings(dev, 4);
1104         if (ret)
1105                 goto error;
1106
1107         ret = cnic_alloc_uio(dev);
1108         if (ret)
1109                 goto error;
1110
1111         return 0;
1112
1113 error:
1114         cnic_free_resc(dev);
1115         return -ENOMEM;
1116 }
1117
1118 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1119 {
1120         return cp->max_kwq_idx -
1121                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1122 }
1123
1124 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1125                                   u32 num_wqes)
1126 {
1127         struct cnic_local *cp = dev->cnic_priv;
1128         struct kwqe *prod_qe;
1129         u16 prod, sw_prod, i;
1130
1131         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1132                 return -EAGAIN;         /* bnx2 is down */
1133
1134         spin_lock_bh(&cp->cnic_ulp_lock);
1135         if (num_wqes > cnic_kwq_avail(cp) &&
1136             !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) {
1137                 spin_unlock_bh(&cp->cnic_ulp_lock);
1138                 return -EAGAIN;
1139         }
1140
1141         cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT;
1142
1143         prod = cp->kwq_prod_idx;
1144         sw_prod = prod & MAX_KWQ_IDX;
1145         for (i = 0; i < num_wqes; i++) {
1146                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1147                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1148                 prod++;
1149                 sw_prod = prod & MAX_KWQ_IDX;
1150         }
1151         cp->kwq_prod_idx = prod;
1152
1153         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1154
1155         spin_unlock_bh(&cp->cnic_ulp_lock);
1156         return 0;
1157 }
1158
1159 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1160                                    union l5cm_specific_data *l5_data)
1161 {
1162         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1163         dma_addr_t map;
1164
1165         map = ctx->kwqe_data_mapping;
1166         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1167         l5_data->phy_address.hi = (u64) map >> 32;
1168         return ctx->kwqe_data;
1169 }
1170
1171 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1172                                 u32 type, union l5cm_specific_data *l5_data)
1173 {
1174         struct cnic_local *cp = dev->cnic_priv;
1175         struct l5cm_spe kwqe;
1176         struct kwqe_16 *kwq[1];
1177         int ret;
1178
1179         kwqe.hdr.conn_and_cmd_data =
1180                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1181                              BNX2X_HW_CID(cid, cp->func)));
1182         kwqe.hdr.type = cpu_to_le16(type);
1183         kwqe.hdr.reserved = 0;
1184         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1185         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1186
1187         kwq[0] = (struct kwqe_16 *) &kwqe;
1188
1189         spin_lock_bh(&cp->cnic_ulp_lock);
1190         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1191         spin_unlock_bh(&cp->cnic_ulp_lock);
1192
1193         if (ret == 1)
1194                 return 0;
1195
1196         return -EBUSY;
1197 }
1198
1199 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1200                                    struct kcqe *cqes[], u32 num_cqes)
1201 {
1202         struct cnic_local *cp = dev->cnic_priv;
1203         struct cnic_ulp_ops *ulp_ops;
1204
1205         rcu_read_lock();
1206         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1207         if (likely(ulp_ops)) {
1208                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1209                                           cqes, num_cqes);
1210         }
1211         rcu_read_unlock();
1212 }
1213
1214 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1215 {
1216         struct cnic_local *cp = dev->cnic_priv;
1217         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1218         int func = cp->func, pages;
1219         int hq_bds;
1220
1221         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1222         cp->num_ccells = req1->num_ccells_per_conn;
1223         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1224                               cp->num_iscsi_tasks;
1225         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1226                         BNX2X_ISCSI_R2TQE_SIZE;
1227         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1228         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1229         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1230         cp->num_cqs = req1->num_cqs;
1231
1232         if (!dev->max_iscsi_conn)
1233                 return 0;
1234
1235         /* init Tstorm RAM */
1236         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(func),
1237                   req1->rq_num_wqes);
1238         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1239                   PAGE_SIZE);
1240         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1241                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1242         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1243                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1244                   req1->num_tasks_per_conn);
1245
1246         /* init Ustorm RAM */
1247         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1248                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(func),
1249                   req1->rq_buffer_size);
1250         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1251                   PAGE_SIZE);
1252         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1253                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1254         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1255                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1256                   req1->num_tasks_per_conn);
1257         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(func),
1258                   req1->rq_num_wqes);
1259         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(func),
1260                   req1->cq_num_wqes);
1261         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1262                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1263
1264         /* init Xstorm RAM */
1265         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1266                   PAGE_SIZE);
1267         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1268                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1269         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1270                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1271                   req1->num_tasks_per_conn);
1272         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1273                   hq_bds);
1274         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(func),
1275                   req1->num_tasks_per_conn);
1276         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1277                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1278
1279         /* init Cstorm RAM */
1280         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1281                   PAGE_SIZE);
1282         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1283                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1284         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1285                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1286                   req1->num_tasks_per_conn);
1287         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(func),
1288                   req1->cq_num_wqes);
1289         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1290                   hq_bds);
1291
1292         return 0;
1293 }
1294
1295 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1296 {
1297         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1298         struct cnic_local *cp = dev->cnic_priv;
1299         int func = cp->func;
1300         struct iscsi_kcqe kcqe;
1301         struct kcqe *cqes[1];
1302
1303         memset(&kcqe, 0, sizeof(kcqe));
1304         if (!dev->max_iscsi_conn) {
1305                 kcqe.completion_status =
1306                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1307                 goto done;
1308         }
1309
1310         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1311                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1312         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1313                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1314                 req2->error_bit_map[1]);
1315
1316         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1317                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1318         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1319                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1320         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1321                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1322                 req2->error_bit_map[1]);
1323
1324         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1325                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1326
1327         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1328
1329 done:
1330         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1331         cqes[0] = (struct kcqe *) &kcqe;
1332         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1333
1334         return 0;
1335 }
1336
1337 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1338 {
1339         struct cnic_local *cp = dev->cnic_priv;
1340         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1341
1342         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1343                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1344
1345                 cnic_free_dma(dev, &iscsi->hq_info);
1346                 cnic_free_dma(dev, &iscsi->r2tq_info);
1347                 cnic_free_dma(dev, &iscsi->task_array_info);
1348         }
1349         cnic_free_id(&cp->cid_tbl, ctx->cid);
1350         ctx->cid = 0;
1351 }
1352
1353 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1354 {
1355         u32 cid;
1356         int ret, pages;
1357         struct cnic_local *cp = dev->cnic_priv;
1358         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1359         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1360
1361         cid = cnic_alloc_new_id(&cp->cid_tbl);
1362         if (cid == -1) {
1363                 ret = -ENOMEM;
1364                 goto error;
1365         }
1366
1367         ctx->cid = cid;
1368         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1369
1370         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1371         if (ret)
1372                 goto error;
1373
1374         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1375         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1376         if (ret)
1377                 goto error;
1378
1379         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1380         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1381         if (ret)
1382                 goto error;
1383
1384         return 0;
1385
1386 error:
1387         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1388         return ret;
1389 }
1390
1391 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1392                                 struct regpair *ctx_addr)
1393 {
1394         struct cnic_local *cp = dev->cnic_priv;
1395         struct cnic_eth_dev *ethdev = cp->ethdev;
1396         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1397         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1398         unsigned long align_off = 0;
1399         dma_addr_t ctx_map;
1400         void *ctx;
1401
1402         if (cp->ctx_align) {
1403                 unsigned long mask = cp->ctx_align - 1;
1404
1405                 if (cp->ctx_arr[blk].mapping & mask)
1406                         align_off = cp->ctx_align -
1407                                     (cp->ctx_arr[blk].mapping & mask);
1408         }
1409         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1410                 (off * BNX2X_CONTEXT_MEM_SIZE);
1411         ctx = cp->ctx_arr[blk].ctx + align_off +
1412               (off * BNX2X_CONTEXT_MEM_SIZE);
1413         if (init)
1414                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1415
1416         ctx_addr->lo = ctx_map & 0xffffffff;
1417         ctx_addr->hi = (u64) ctx_map >> 32;
1418         return ctx;
1419 }
1420
1421 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1422                                 u32 num)
1423 {
1424         struct cnic_local *cp = dev->cnic_priv;
1425         struct iscsi_kwqe_conn_offload1 *req1 =
1426                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1427         struct iscsi_kwqe_conn_offload2 *req2 =
1428                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1429         struct iscsi_kwqe_conn_offload3 *req3;
1430         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1431         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1432         u32 cid = ctx->cid;
1433         u32 hw_cid = BNX2X_HW_CID(cid, cp->func);
1434         struct iscsi_context *ictx;
1435         struct regpair context_addr;
1436         int i, j, n = 2, n_max;
1437
1438         ctx->ctx_flags = 0;
1439         if (!req2->num_additional_wqes)
1440                 return -EINVAL;
1441
1442         n_max = req2->num_additional_wqes + 2;
1443
1444         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1445         if (ictx == NULL)
1446                 return -ENOMEM;
1447
1448         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1449
1450         ictx->xstorm_ag_context.hq_prod = 1;
1451
1452         ictx->xstorm_st_context.iscsi.first_burst_length =
1453                 ISCSI_DEF_FIRST_BURST_LEN;
1454         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1455                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1456         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1457                 req1->sq_page_table_addr_lo;
1458         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1459                 req1->sq_page_table_addr_hi;
1460         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1461         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1462         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1463                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1464         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1465                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1466         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1467                 iscsi->hq_info.pgtbl[0];
1468         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1469                 iscsi->hq_info.pgtbl[1];
1470         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1471                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1472         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1473                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1474         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1475                 iscsi->r2tq_info.pgtbl[0];
1476         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1477                 iscsi->r2tq_info.pgtbl[1];
1478         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1479                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1480         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1481                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1482         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1483                 BNX2X_ISCSI_PBL_NOT_CACHED;
1484         ictx->xstorm_st_context.iscsi.flags.flags |=
1485                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1486         ictx->xstorm_st_context.iscsi.flags.flags |=
1487                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1488
1489         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1490         /* TSTORM requires the base address of RQ DB & not PTE */
1491         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1492                 req2->rq_page_table_addr_lo & PAGE_MASK;
1493         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1494                 req2->rq_page_table_addr_hi;
1495         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1496         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1497         ictx->tstorm_st_context.tcp.flags2 |=
1498                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1499
1500         ictx->timers_context.flags |= ISCSI_TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1501
1502         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1503                 req2->rq_page_table_addr_lo & 0xffffffff;
1504         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1505                 (u64) req2->rq_page_table_addr_hi >> 32;
1506         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1507         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1508         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1509                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1510         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1511                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1512         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1513                 iscsi->r2tq_info.pgtbl[0];
1514         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1515                 iscsi->r2tq_info.pgtbl[1];
1516         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1517                 req1->cq_page_table_addr_lo;
1518         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1519                 req1->cq_page_table_addr_hi;
1520         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1521         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1522         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1523         ictx->ustorm_st_context.task_pbe_cache_index =
1524                 BNX2X_ISCSI_PBL_NOT_CACHED;
1525         ictx->ustorm_st_context.task_pdu_cache_index =
1526                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1527
1528         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1529                 if (j == 3) {
1530                         if (n >= n_max)
1531                                 break;
1532                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1533                         j = 0;
1534                 }
1535                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1536                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1537                         req3->qp_first_pte[j].hi;
1538                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1539                         req3->qp_first_pte[j].lo;
1540         }
1541
1542         ictx->ustorm_st_context.task_pbl_base.lo =
1543                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1544         ictx->ustorm_st_context.task_pbl_base.hi =
1545                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1546         ictx->ustorm_st_context.tce_phy_addr.lo =
1547                 iscsi->task_array_info.pgtbl[0];
1548         ictx->ustorm_st_context.tce_phy_addr.hi =
1549                 iscsi->task_array_info.pgtbl[1];
1550         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1551         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1552         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1553         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1554                 ISCSI_DEF_MAX_BURST_LEN;
1555         ictx->ustorm_st_context.negotiated_rx |=
1556                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1557                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1558
1559         ictx->cstorm_st_context.hq_pbl_base.lo =
1560                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1561         ictx->cstorm_st_context.hq_pbl_base.hi =
1562                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1563         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1564         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1565         ictx->cstorm_st_context.task_pbl_base.lo =
1566                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1567         ictx->cstorm_st_context.task_pbl_base.hi =
1568                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1569         /* CSTORM and USTORM initialization is different, CSTORM requires
1570          * CQ DB base & not PTE addr */
1571         ictx->cstorm_st_context.cq_db_base.lo =
1572                 req1->cq_page_table_addr_lo & PAGE_MASK;
1573         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1574         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1575         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1576         for (i = 0; i < cp->num_cqs; i++) {
1577                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1578                         ISCSI_INITIAL_SN;
1579                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1580                         ISCSI_INITIAL_SN;
1581         }
1582
1583         ictx->xstorm_ag_context.cdu_reserved =
1584                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1585                                        ISCSI_CONNECTION_TYPE);
1586         ictx->ustorm_ag_context.cdu_usage =
1587                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1588                                        ISCSI_CONNECTION_TYPE);
1589         return 0;
1590
1591 }
1592
1593 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1594                                    u32 num, int *work)
1595 {
1596         struct iscsi_kwqe_conn_offload1 *req1;
1597         struct iscsi_kwqe_conn_offload2 *req2;
1598         struct cnic_local *cp = dev->cnic_priv;
1599         struct iscsi_kcqe kcqe;
1600         struct kcqe *cqes[1];
1601         u32 l5_cid;
1602         int ret;
1603
1604         if (num < 2) {
1605                 *work = num;
1606                 return -EINVAL;
1607         }
1608
1609         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1610         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1611         if ((num - 2) < req2->num_additional_wqes) {
1612                 *work = num;
1613                 return -EINVAL;
1614         }
1615         *work = 2 + req2->num_additional_wqes;;
1616
1617         l5_cid = req1->iscsi_conn_id;
1618         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1619                 return -EINVAL;
1620
1621         memset(&kcqe, 0, sizeof(kcqe));
1622         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1623         kcqe.iscsi_conn_id = l5_cid;
1624         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1625
1626         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1627                 atomic_dec(&cp->iscsi_conn);
1628                 ret = 0;
1629                 goto done;
1630         }
1631         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1632         if (ret) {
1633                 atomic_dec(&cp->iscsi_conn);
1634                 ret = 0;
1635                 goto done;
1636         }
1637         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1638         if (ret < 0) {
1639                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1640                 atomic_dec(&cp->iscsi_conn);
1641                 goto done;
1642         }
1643
1644         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1645         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp->ctx_tbl[l5_cid].cid,
1646                                                   cp->func);
1647
1648 done:
1649         cqes[0] = (struct kcqe *) &kcqe;
1650         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1651         return ret;
1652 }
1653
1654
1655 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1656 {
1657         struct cnic_local *cp = dev->cnic_priv;
1658         struct iscsi_kwqe_conn_update *req =
1659                 (struct iscsi_kwqe_conn_update *) kwqe;
1660         void *data;
1661         union l5cm_specific_data l5_data;
1662         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1663         int ret;
1664
1665         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1666                 return -EINVAL;
1667
1668         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1669         if (!data)
1670                 return -ENOMEM;
1671
1672         memcpy(data, kwqe, sizeof(struct kwqe));
1673
1674         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1675                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1676         return ret;
1677 }
1678
1679 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1680 {
1681         struct cnic_local *cp = dev->cnic_priv;
1682         struct iscsi_kwqe_conn_destroy *req =
1683                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1684         union l5cm_specific_data l5_data;
1685         u32 l5_cid = req->reserved0;
1686         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1687         int ret = 0;
1688         struct iscsi_kcqe kcqe;
1689         struct kcqe *cqes[1];
1690
1691         if (!(ctx->ctx_flags & CTX_FL_OFFLD_START))
1692                 goto skip_cfc_delete;
1693
1694         while (!time_after(jiffies, ctx->timestamp + (2 * HZ)))
1695                 msleep(250);
1696
1697         init_waitqueue_head(&ctx->waitq);
1698         ctx->wait_cond = 0;
1699         memset(&l5_data, 0, sizeof(l5_data));
1700         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
1701                                   req->context_id,
1702                                   ETH_CONNECTION_TYPE |
1703                                   (1 << SPE_HDR_COMMON_RAMROD_SHIFT),
1704                                   &l5_data);
1705         if (ret == 0)
1706                 wait_event(ctx->waitq, ctx->wait_cond);
1707
1708 skip_cfc_delete:
1709         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1710
1711         atomic_dec(&cp->iscsi_conn);
1712
1713         memset(&kcqe, 0, sizeof(kcqe));
1714         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1715         kcqe.iscsi_conn_id = l5_cid;
1716         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1717         kcqe.iscsi_conn_context_id = req->context_id;
1718
1719         cqes[0] = (struct kcqe *) &kcqe;
1720         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1721
1722         return ret;
1723 }
1724
1725 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1726                                       struct l4_kwq_connect_req1 *kwqe1,
1727                                       struct l4_kwq_connect_req3 *kwqe3,
1728                                       struct l5cm_active_conn_buffer *conn_buf)
1729 {
1730         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1731         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1732                 &conn_buf->xstorm_conn_buffer;
1733         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1734                 &conn_buf->tstorm_conn_buffer;
1735         struct regpair context_addr;
1736         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1737         struct in6_addr src_ip, dst_ip;
1738         int i;
1739         u32 *addrp;
1740
1741         addrp = (u32 *) &conn_addr->local_ip_addr;
1742         for (i = 0; i < 4; i++, addrp++)
1743                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1744
1745         addrp = (u32 *) &conn_addr->remote_ip_addr;
1746         for (i = 0; i < 4; i++, addrp++)
1747                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1748
1749         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1750
1751         xstorm_buf->context_addr.hi = context_addr.hi;
1752         xstorm_buf->context_addr.lo = context_addr.lo;
1753         xstorm_buf->mss = 0xffff;
1754         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1755         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1756                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1757         xstorm_buf->pseudo_header_checksum =
1758                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1759
1760         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1761                 tstorm_buf->params |=
1762                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1763         if (kwqe3->ka_timeout) {
1764                 tstorm_buf->ka_enable = 1;
1765                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1766                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1767                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1768         }
1769         tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1770         tstorm_buf->snd_buf = kwqe3->snd_buf;
1771         tstorm_buf->max_rt_time = 0xffffffff;
1772 }
1773
1774 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1775 {
1776         struct cnic_local *cp = dev->cnic_priv;
1777         int func = CNIC_FUNC(cp);
1778         u8 *mac = dev->mac_addr;
1779
1780         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1781                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(func), mac[0]);
1782         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1783                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(func), mac[1]);
1784         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1785                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(func), mac[2]);
1786         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1787                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(func), mac[3]);
1788         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1789                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(func), mac[4]);
1790         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1791                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(func), mac[5]);
1792
1793         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1794                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func), mac[5]);
1795         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1796                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1797                  mac[4]);
1798         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1799                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func), mac[3]);
1800         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1801                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1802                  mac[2]);
1803         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1804                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 2,
1805                  mac[1]);
1806         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1807                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 3,
1808                  mac[0]);
1809 }
1810
1811 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1812 {
1813         struct cnic_local *cp = dev->cnic_priv;
1814         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1815         u16 tstorm_flags = 0;
1816
1817         if (tcp_ts) {
1818                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1819                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1820         }
1821
1822         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1823                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), xstorm_flags);
1824
1825         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1826                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), tstorm_flags);
1827 }
1828
1829 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
1830                               u32 num, int *work)
1831 {
1832         struct cnic_local *cp = dev->cnic_priv;
1833         struct l4_kwq_connect_req1 *kwqe1 =
1834                 (struct l4_kwq_connect_req1 *) wqes[0];
1835         struct l4_kwq_connect_req3 *kwqe3;
1836         struct l5cm_active_conn_buffer *conn_buf;
1837         struct l5cm_conn_addr_params *conn_addr;
1838         union l5cm_specific_data l5_data;
1839         u32 l5_cid = kwqe1->pg_cid;
1840         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
1841         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1842         int ret;
1843
1844         if (num < 2) {
1845                 *work = num;
1846                 return -EINVAL;
1847         }
1848
1849         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
1850                 *work = 3;
1851         else
1852                 *work = 2;
1853
1854         if (num < *work) {
1855                 *work = num;
1856                 return -EINVAL;
1857         }
1858
1859         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
1860                 printk(KERN_ERR PFX "%s: conn_buf size too big\n",
1861                                dev->netdev->name);
1862                 return -ENOMEM;
1863         }
1864         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1865         if (!conn_buf)
1866                 return -ENOMEM;
1867
1868         memset(conn_buf, 0, sizeof(*conn_buf));
1869
1870         conn_addr = &conn_buf->conn_addr_buf;
1871         conn_addr->remote_addr_0 = csk->ha[0];
1872         conn_addr->remote_addr_1 = csk->ha[1];
1873         conn_addr->remote_addr_2 = csk->ha[2];
1874         conn_addr->remote_addr_3 = csk->ha[3];
1875         conn_addr->remote_addr_4 = csk->ha[4];
1876         conn_addr->remote_addr_5 = csk->ha[5];
1877
1878         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
1879                 struct l4_kwq_connect_req2 *kwqe2 =
1880                         (struct l4_kwq_connect_req2 *) wqes[1];
1881
1882                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
1883                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
1884                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
1885
1886                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
1887                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
1888                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
1889                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
1890         }
1891         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
1892
1893         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
1894         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
1895         conn_addr->local_tcp_port = kwqe1->src_port;
1896         conn_addr->remote_tcp_port = kwqe1->dst_port;
1897
1898         conn_addr->pmtu = kwqe3->pmtu;
1899         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
1900
1901         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1902                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->func), csk->vlan_id);
1903
1904         cnic_bnx2x_set_tcp_timestamp(dev,
1905                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
1906
1907         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
1908                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1909         if (!ret)
1910                 ctx->ctx_flags |= CTX_FL_OFFLD_START;
1911
1912         return ret;
1913 }
1914
1915 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
1916 {
1917         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
1918         union l5cm_specific_data l5_data;
1919         int ret;
1920
1921         memset(&l5_data, 0, sizeof(l5_data));
1922         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
1923                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1924         return ret;
1925 }
1926
1927 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
1928 {
1929         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
1930         union l5cm_specific_data l5_data;
1931         int ret;
1932
1933         memset(&l5_data, 0, sizeof(l5_data));
1934         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
1935                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1936         return ret;
1937 }
1938 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1939 {
1940         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
1941         struct l4_kcq kcqe;
1942         struct kcqe *cqes[1];
1943
1944         memset(&kcqe, 0, sizeof(kcqe));
1945         kcqe.pg_host_opaque = req->host_opaque;
1946         kcqe.pg_cid = req->host_opaque;
1947         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
1948         cqes[0] = (struct kcqe *) &kcqe;
1949         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1950         return 0;
1951 }
1952
1953 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1954 {
1955         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
1956         struct l4_kcq kcqe;
1957         struct kcqe *cqes[1];
1958
1959         memset(&kcqe, 0, sizeof(kcqe));
1960         kcqe.pg_host_opaque = req->pg_host_opaque;
1961         kcqe.pg_cid = req->pg_cid;
1962         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
1963         cqes[0] = (struct kcqe *) &kcqe;
1964         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1965         return 0;
1966 }
1967
1968 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1969                                    u32 num_wqes)
1970 {
1971         int i, work, ret;
1972         u32 opcode;
1973         struct kwqe *kwqe;
1974
1975         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1976                 return -EAGAIN;         /* bnx2 is down */
1977
1978         for (i = 0; i < num_wqes; ) {
1979                 kwqe = wqes[i];
1980                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
1981                 work = 1;
1982
1983                 switch (opcode) {
1984                 case ISCSI_KWQE_OPCODE_INIT1:
1985                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
1986                         break;
1987                 case ISCSI_KWQE_OPCODE_INIT2:
1988                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
1989                         break;
1990                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
1991                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
1992                                                      num_wqes - i, &work);
1993                         break;
1994                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
1995                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
1996                         break;
1997                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
1998                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
1999                         break;
2000                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2001                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2002                                                  &work);
2003                         break;
2004                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2005                         ret = cnic_bnx2x_close(dev, kwqe);
2006                         break;
2007                 case L4_KWQE_OPCODE_VALUE_RESET:
2008                         ret = cnic_bnx2x_reset(dev, kwqe);
2009                         break;
2010                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2011                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2012                         break;
2013                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2014                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2015                         break;
2016                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2017                         ret = 0;
2018                         break;
2019                 default:
2020                         ret = 0;
2021                         printk(KERN_ERR PFX "%s: Unknown type of KWQE(0x%x)\n",
2022                                dev->netdev->name, opcode);
2023                         break;
2024                 }
2025                 if (ret < 0)
2026                         printk(KERN_ERR PFX "%s: KWQE(0x%x) failed\n",
2027                                dev->netdev->name, opcode);
2028                 i += work;
2029         }
2030         return 0;
2031 }
2032
2033 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2034 {
2035         struct cnic_local *cp = dev->cnic_priv;
2036         int i, j;
2037
2038         i = 0;
2039         j = 1;
2040         while (num_cqes) {
2041                 struct cnic_ulp_ops *ulp_ops;
2042                 int ulp_type;
2043                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2044                 u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;
2045
2046                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2047                         cnic_kwq_completion(dev, 1);
2048
2049                 while (j < num_cqes) {
2050                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2051
2052                         if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
2053                                 break;
2054
2055                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2056                                 cnic_kwq_completion(dev, 1);
2057                         j++;
2058                 }
2059
2060                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2061                         ulp_type = CNIC_ULP_RDMA;
2062                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2063                         ulp_type = CNIC_ULP_ISCSI;
2064                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2065                         ulp_type = CNIC_ULP_L4;
2066                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2067                         goto end;
2068                 else {
2069                         printk(KERN_ERR PFX "%s: Unknown type of KCQE(0x%x)\n",
2070                                dev->netdev->name, kcqe_op_flag);
2071                         goto end;
2072                 }
2073
2074                 rcu_read_lock();
2075                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2076                 if (likely(ulp_ops)) {
2077                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2078                                                   cp->completed_kcq + i, j);
2079                 }
2080                 rcu_read_unlock();
2081 end:
2082                 num_cqes -= j;
2083                 i += j;
2084                 j = 1;
2085         }
2086         return;
2087 }
2088
2089 static u16 cnic_bnx2_next_idx(u16 idx)
2090 {
2091         return idx + 1;
2092 }
2093
2094 static u16 cnic_bnx2_hw_idx(u16 idx)
2095 {
2096         return idx;
2097 }
2098
2099 static u16 cnic_bnx2x_next_idx(u16 idx)
2100 {
2101         idx++;
2102         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2103                 idx++;
2104
2105         return idx;
2106 }
2107
2108 static u16 cnic_bnx2x_hw_idx(u16 idx)
2109 {
2110         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2111                 idx++;
2112         return idx;
2113 }
2114
2115 static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
2116 {
2117         struct cnic_local *cp = dev->cnic_priv;
2118         u16 i, ri, last;
2119         struct kcqe *kcqe;
2120         int kcqe_cnt = 0, last_cnt = 0;
2121
2122         i = ri = last = *sw_prod;
2123         ri &= MAX_KCQ_IDX;
2124
2125         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2126                 kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2127                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2128                 i = cp->next_idx(i);
2129                 ri = i & MAX_KCQ_IDX;
2130                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2131                         last_cnt = kcqe_cnt;
2132                         last = i;
2133                 }
2134         }
2135
2136         *sw_prod = last;
2137         return last_cnt;
2138 }
2139
2140 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2141 {
2142         u16 rx_cons = *cp->rx_cons_ptr;
2143         u16 tx_cons = *cp->tx_cons_ptr;
2144
2145         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2146                 cp->tx_cons = tx_cons;
2147                 cp->rx_cons = rx_cons;
2148
2149                 uio_event_notify(cp->cnic_uinfo);
2150         }
2151 }
2152
2153 static int cnic_service_bnx2(void *data, void *status_blk)
2154 {
2155         struct cnic_dev *dev = data;
2156         struct status_block *sblk = status_blk;
2157         struct cnic_local *cp = dev->cnic_priv;
2158         u32 status_idx = sblk->status_idx;
2159         u16 hw_prod, sw_prod;
2160         int kcqe_cnt;
2161
2162         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2163                 return status_idx;
2164
2165         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2166
2167         hw_prod = sblk->status_completion_producer_index;
2168         sw_prod = cp->kcq_prod_idx;
2169         while (sw_prod != hw_prod) {
2170                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2171                 if (kcqe_cnt == 0)
2172                         goto done;
2173
2174                 service_kcqes(dev, kcqe_cnt);
2175
2176                 /* Tell compiler that status_blk fields can change. */
2177                 barrier();
2178                 if (status_idx != sblk->status_idx) {
2179                         status_idx = sblk->status_idx;
2180                         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2181                         hw_prod = sblk->status_completion_producer_index;
2182                 } else
2183                         break;
2184         }
2185
2186 done:
2187         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2188
2189         cp->kcq_prod_idx = sw_prod;
2190
2191         cnic_chk_pkt_rings(cp);
2192         return status_idx;
2193 }
2194
2195 static void cnic_service_bnx2_msix(unsigned long data)
2196 {
2197         struct cnic_dev *dev = (struct cnic_dev *) data;
2198         struct cnic_local *cp = dev->cnic_priv;
2199         struct status_block_msix *status_blk = cp->bnx2_status_blk;
2200         u32 status_idx = status_blk->status_idx;
2201         u16 hw_prod, sw_prod;
2202         int kcqe_cnt;
2203
2204         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2205
2206         hw_prod = status_blk->status_completion_producer_index;
2207         sw_prod = cp->kcq_prod_idx;
2208         while (sw_prod != hw_prod) {
2209                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2210                 if (kcqe_cnt == 0)
2211                         goto done;
2212
2213                 service_kcqes(dev, kcqe_cnt);
2214
2215                 /* Tell compiler that status_blk fields can change. */
2216                 barrier();
2217                 if (status_idx != status_blk->status_idx) {
2218                         status_idx = status_blk->status_idx;
2219                         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2220                         hw_prod = status_blk->status_completion_producer_index;
2221                 } else
2222                         break;
2223         }
2224
2225 done:
2226         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2227         cp->kcq_prod_idx = sw_prod;
2228
2229         cnic_chk_pkt_rings(cp);
2230
2231         cp->last_status_idx = status_idx;
2232         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2233                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2234 }
2235
2236 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2237 {
2238         struct cnic_dev *dev = dev_instance;
2239         struct cnic_local *cp = dev->cnic_priv;
2240         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2241
2242         if (cp->ack_int)
2243                 cp->ack_int(dev);
2244
2245         prefetch(cp->status_blk);
2246         prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2247
2248         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2249                 tasklet_schedule(&cp->cnic_irq_task);
2250
2251         return IRQ_HANDLED;
2252 }
2253
2254 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2255                                       u16 index, u8 op, u8 update)
2256 {
2257         struct cnic_local *cp = dev->cnic_priv;
2258         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2259                        COMMAND_REG_INT_ACK);
2260         struct igu_ack_register igu_ack;
2261
2262         igu_ack.status_block_index = index;
2263         igu_ack.sb_id_and_flags =
2264                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2265                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2266                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2267                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2268
2269         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2270 }
2271
2272 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2273 {
2274         struct cnic_local *cp = dev->cnic_priv;
2275
2276         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID, 0,
2277                            IGU_INT_DISABLE, 0);
2278 }
2279
2280 static void cnic_service_bnx2x_bh(unsigned long data)
2281 {
2282         struct cnic_dev *dev = (struct cnic_dev *) data;
2283         struct cnic_local *cp = dev->cnic_priv;
2284         u16 hw_prod, sw_prod;
2285         struct cstorm_status_block_c *sblk =
2286                 &cp->bnx2x_status_blk->c_status_block;
2287         u32 status_idx = sblk->status_block_index;
2288         int kcqe_cnt;
2289
2290         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2291                 return;
2292
2293         hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2294         hw_prod = cp->hw_idx(hw_prod);
2295         sw_prod = cp->kcq_prod_idx;
2296         while (sw_prod != hw_prod) {
2297                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2298                 if (kcqe_cnt == 0)
2299                         goto done;
2300
2301                 service_kcqes(dev, kcqe_cnt);
2302
2303                 /* Tell compiler that sblk fields can change. */
2304                 barrier();
2305                 if (status_idx == sblk->status_block_index)
2306                         break;
2307
2308                 status_idx = sblk->status_block_index;
2309                 hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2310                 hw_prod = cp->hw_idx(hw_prod);
2311         }
2312
2313 done:
2314         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod + MAX_KCQ_IDX);
2315         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID,
2316                            status_idx, IGU_INT_ENABLE, 1);
2317
2318         cp->kcq_prod_idx = sw_prod;
2319         return;
2320 }
2321
2322 static int cnic_service_bnx2x(void *data, void *status_blk)
2323 {
2324         struct cnic_dev *dev = data;
2325         struct cnic_local *cp = dev->cnic_priv;
2326         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2327
2328         prefetch(cp->status_blk);
2329         prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2330
2331         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2332                 tasklet_schedule(&cp->cnic_irq_task);
2333
2334         cnic_chk_pkt_rings(cp);
2335
2336         return 0;
2337 }
2338
2339 static void cnic_ulp_stop(struct cnic_dev *dev)
2340 {
2341         struct cnic_local *cp = dev->cnic_priv;
2342         int if_type;
2343
2344         if (cp->cnic_uinfo)
2345                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2346
2347         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2348                 struct cnic_ulp_ops *ulp_ops;
2349
2350                 mutex_lock(&cnic_lock);
2351                 ulp_ops = cp->ulp_ops[if_type];
2352                 if (!ulp_ops) {
2353                         mutex_unlock(&cnic_lock);
2354                         continue;
2355                 }
2356                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2357                 mutex_unlock(&cnic_lock);
2358
2359                 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2360                         ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2361
2362                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2363         }
2364 }
2365
2366 static void cnic_ulp_start(struct cnic_dev *dev)
2367 {
2368         struct cnic_local *cp = dev->cnic_priv;
2369         int if_type;
2370
2371         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2372                 struct cnic_ulp_ops *ulp_ops;
2373
2374                 mutex_lock(&cnic_lock);
2375                 ulp_ops = cp->ulp_ops[if_type];
2376                 if (!ulp_ops || !ulp_ops->cnic_start) {
2377                         mutex_unlock(&cnic_lock);
2378                         continue;
2379                 }
2380                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2381                 mutex_unlock(&cnic_lock);
2382
2383                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2384                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2385
2386                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2387         }
2388 }
2389
2390 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
2391 {
2392         struct cnic_dev *dev = data;
2393
2394         switch (info->cmd) {
2395         case CNIC_CTL_STOP_CMD:
2396                 cnic_hold(dev);
2397
2398                 cnic_ulp_stop(dev);
2399                 cnic_stop_hw(dev);
2400
2401                 cnic_put(dev);
2402                 break;
2403         case CNIC_CTL_START_CMD:
2404                 cnic_hold(dev);
2405
2406                 if (!cnic_start_hw(dev))
2407                         cnic_ulp_start(dev);
2408
2409                 cnic_put(dev);
2410                 break;
2411         case CNIC_CTL_COMPLETION_CMD: {
2412                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
2413                 u32 l5_cid;
2414                 struct cnic_local *cp = dev->cnic_priv;
2415
2416                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
2417                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2418
2419                         ctx->wait_cond = 1;
2420                         wake_up(&ctx->waitq);
2421                 }
2422                 break;
2423         }
2424         default:
2425                 return -EINVAL;
2426         }
2427         return 0;
2428 }
2429
2430 static void cnic_ulp_init(struct cnic_dev *dev)
2431 {
2432         int i;
2433         struct cnic_local *cp = dev->cnic_priv;
2434
2435         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2436                 struct cnic_ulp_ops *ulp_ops;
2437
2438                 mutex_lock(&cnic_lock);
2439                 ulp_ops = cnic_ulp_tbl[i];
2440                 if (!ulp_ops || !ulp_ops->cnic_init) {
2441                         mutex_unlock(&cnic_lock);
2442                         continue;
2443                 }
2444                 ulp_get(ulp_ops);
2445                 mutex_unlock(&cnic_lock);
2446
2447                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2448                         ulp_ops->cnic_init(dev);
2449
2450                 ulp_put(ulp_ops);
2451         }
2452 }
2453
2454 static void cnic_ulp_exit(struct cnic_dev *dev)
2455 {
2456         int i;
2457         struct cnic_local *cp = dev->cnic_priv;
2458
2459         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2460                 struct cnic_ulp_ops *ulp_ops;
2461
2462                 mutex_lock(&cnic_lock);
2463                 ulp_ops = cnic_ulp_tbl[i];
2464                 if (!ulp_ops || !ulp_ops->cnic_exit) {
2465                         mutex_unlock(&cnic_lock);
2466                         continue;
2467                 }
2468                 ulp_get(ulp_ops);
2469                 mutex_unlock(&cnic_lock);
2470
2471                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2472                         ulp_ops->cnic_exit(dev);
2473
2474                 ulp_put(ulp_ops);
2475         }
2476 }
2477
2478 static int cnic_cm_offload_pg(struct cnic_sock *csk)
2479 {
2480         struct cnic_dev *dev = csk->dev;
2481         struct l4_kwq_offload_pg *l4kwqe;
2482         struct kwqe *wqes[1];
2483
2484         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
2485         memset(l4kwqe, 0, sizeof(*l4kwqe));
2486         wqes[0] = (struct kwqe *) l4kwqe;
2487
2488         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
2489         l4kwqe->flags =
2490                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
2491         l4kwqe->l2hdr_nbytes = ETH_HLEN;
2492
2493         l4kwqe->da0 = csk->ha[0];
2494         l4kwqe->da1 = csk->ha[1];
2495         l4kwqe->da2 = csk->ha[2];
2496         l4kwqe->da3 = csk->ha[3];
2497         l4kwqe->da4 = csk->ha[4];
2498         l4kwqe->da5 = csk->ha[5];
2499
2500         l4kwqe->sa0 = dev->mac_addr[0];
2501         l4kwqe->sa1 = dev->mac_addr[1];
2502         l4kwqe->sa2 = dev->mac_addr[2];
2503         l4kwqe->sa3 = dev->mac_addr[3];
2504         l4kwqe->sa4 = dev->mac_addr[4];
2505         l4kwqe->sa5 = dev->mac_addr[5];
2506
2507         l4kwqe->etype = ETH_P_IP;
2508         l4kwqe->ipid_count = DEF_IPID_COUNT;
2509         l4kwqe->host_opaque = csk->l5_cid;
2510
2511         if (csk->vlan_id) {
2512                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
2513                 l4kwqe->vlan_tag = csk->vlan_id;
2514                 l4kwqe->l2hdr_nbytes += 4;
2515         }
2516
2517         return dev->submit_kwqes(dev, wqes, 1);
2518 }
2519
2520 static int cnic_cm_update_pg(struct cnic_sock *csk)
2521 {
2522         struct cnic_dev *dev = csk->dev;
2523         struct l4_kwq_update_pg *l4kwqe;
2524         struct kwqe *wqes[1];
2525
2526         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
2527         memset(l4kwqe, 0, sizeof(*l4kwqe));
2528         wqes[0] = (struct kwqe *) l4kwqe;
2529
2530         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
2531         l4kwqe->flags =
2532                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
2533         l4kwqe->pg_cid = csk->pg_cid;
2534
2535         l4kwqe->da0 = csk->ha[0];
2536         l4kwqe->da1 = csk->ha[1];
2537         l4kwqe->da2 = csk->ha[2];
2538         l4kwqe->da3 = csk->ha[3];
2539         l4kwqe->da4 = csk->ha[4];
2540         l4kwqe->da5 = csk->ha[5];
2541
2542         l4kwqe->pg_host_opaque = csk->l5_cid;
2543         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
2544
2545         return dev->submit_kwqes(dev, wqes, 1);
2546 }
2547
2548 static int cnic_cm_upload_pg(struct cnic_sock *csk)
2549 {
2550         struct cnic_dev *dev = csk->dev;
2551         struct l4_kwq_upload *l4kwqe;
2552         struct kwqe *wqes[1];
2553
2554         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
2555         memset(l4kwqe, 0, sizeof(*l4kwqe));
2556         wqes[0] = (struct kwqe *) l4kwqe;
2557
2558         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
2559         l4kwqe->flags =
2560                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
2561         l4kwqe->cid = csk->pg_cid;
2562
2563         return dev->submit_kwqes(dev, wqes, 1);
2564 }
2565
2566 static int cnic_cm_conn_req(struct cnic_sock *csk)
2567 {
2568         struct cnic_dev *dev = csk->dev;
2569         struct l4_kwq_connect_req1 *l4kwqe1;
2570         struct l4_kwq_connect_req2 *l4kwqe2;
2571         struct l4_kwq_connect_req3 *l4kwqe3;
2572         struct kwqe *wqes[3];
2573         u8 tcp_flags = 0;
2574         int num_wqes = 2;
2575
2576         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
2577         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
2578         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
2579         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
2580         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
2581         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
2582
2583         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
2584         l4kwqe3->flags =
2585                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
2586         l4kwqe3->ka_timeout = csk->ka_timeout;
2587         l4kwqe3->ka_interval = csk->ka_interval;
2588         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
2589         l4kwqe3->tos = csk->tos;
2590         l4kwqe3->ttl = csk->ttl;
2591         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
2592         l4kwqe3->pmtu = csk->mtu;
2593         l4kwqe3->rcv_buf = csk->rcv_buf;
2594         l4kwqe3->snd_buf = csk->snd_buf;
2595         l4kwqe3->seed = csk->seed;
2596
2597         wqes[0] = (struct kwqe *) l4kwqe1;
2598         if (test_bit(SK_F_IPV6, &csk->flags)) {
2599                 wqes[1] = (struct kwqe *) l4kwqe2;
2600                 wqes[2] = (struct kwqe *) l4kwqe3;
2601                 num_wqes = 3;
2602
2603                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
2604                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
2605                 l4kwqe2->flags =
2606                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
2607                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
2608                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
2609                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
2610                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
2611                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
2612                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
2613                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
2614                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
2615                                sizeof(struct tcphdr);
2616         } else {
2617                 wqes[1] = (struct kwqe *) l4kwqe3;
2618                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
2619                                sizeof(struct tcphdr);
2620         }
2621
2622         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
2623         l4kwqe1->flags =
2624                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
2625                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
2626         l4kwqe1->cid = csk->cid;
2627         l4kwqe1->pg_cid = csk->pg_cid;
2628         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
2629         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
2630         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
2631         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
2632         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
2633                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
2634         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
2635                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
2636         if (csk->tcp_flags & SK_TCP_NAGLE)
2637                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
2638         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
2639                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
2640         if (csk->tcp_flags & SK_TCP_SACK)
2641                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
2642         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
2643                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
2644
2645         l4kwqe1->tcp_flags = tcp_flags;
2646
2647         return dev->submit_kwqes(dev, wqes, num_wqes);
2648 }
2649
2650 static int cnic_cm_close_req(struct cnic_sock *csk)
2651 {
2652         struct cnic_dev *dev = csk->dev;
2653         struct l4_kwq_close_req *l4kwqe;
2654         struct kwqe *wqes[1];
2655
2656         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
2657         memset(l4kwqe, 0, sizeof(*l4kwqe));
2658         wqes[0] = (struct kwqe *) l4kwqe;
2659
2660         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
2661         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
2662         l4kwqe->cid = csk->cid;
2663
2664         return dev->submit_kwqes(dev, wqes, 1);
2665 }
2666
2667 static int cnic_cm_abort_req(struct cnic_sock *csk)
2668 {
2669         struct cnic_dev *dev = csk->dev;
2670         struct l4_kwq_reset_req *l4kwqe;
2671         struct kwqe *wqes[1];
2672
2673         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
2674         memset(l4kwqe, 0, sizeof(*l4kwqe));
2675         wqes[0] = (struct kwqe *) l4kwqe;
2676
2677         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
2678         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
2679         l4kwqe->cid = csk->cid;
2680
2681         return dev->submit_kwqes(dev, wqes, 1);
2682 }
2683
2684 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
2685                           u32 l5_cid, struct cnic_sock **csk, void *context)
2686 {
2687         struct cnic_local *cp = dev->cnic_priv;
2688         struct cnic_sock *csk1;
2689
2690         if (l5_cid >= MAX_CM_SK_TBL_SZ)
2691                 return -EINVAL;
2692
2693         csk1 = &cp->csk_tbl[l5_cid];
2694         if (atomic_read(&csk1->ref_count))
2695                 return -EAGAIN;
2696
2697         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
2698                 return -EBUSY;
2699
2700         csk1->dev = dev;
2701         csk1->cid = cid;
2702         csk1->l5_cid = l5_cid;
2703         csk1->ulp_type = ulp_type;
2704         csk1->context = context;
2705
2706         csk1->ka_timeout = DEF_KA_TIMEOUT;
2707         csk1->ka_interval = DEF_KA_INTERVAL;
2708         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
2709         csk1->tos = DEF_TOS;
2710         csk1->ttl = DEF_TTL;
2711         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
2712         csk1->rcv_buf = DEF_RCV_BUF;
2713         csk1->snd_buf = DEF_SND_BUF;
2714         csk1->seed = DEF_SEED;
2715
2716         *csk = csk1;
2717         return 0;
2718 }
2719
2720 static void cnic_cm_cleanup(struct cnic_sock *csk)
2721 {
2722         if (csk->src_port) {
2723                 struct cnic_dev *dev = csk->dev;
2724                 struct cnic_local *cp = dev->cnic_priv;
2725
2726                 cnic_free_id(&cp->csk_port_tbl, csk->src_port);
2727                 csk->src_port = 0;
2728         }
2729 }
2730
2731 static void cnic_close_conn(struct cnic_sock *csk)
2732 {
2733         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
2734                 cnic_cm_upload_pg(csk);
2735                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
2736         }
2737         cnic_cm_cleanup(csk);
2738 }
2739
2740 static int cnic_cm_destroy(struct cnic_sock *csk)
2741 {
2742         if (!cnic_in_use(csk))
2743                 return -EINVAL;
2744
2745         csk_hold(csk);
2746         clear_bit(SK_F_INUSE, &csk->flags);
2747         smp_mb__after_clear_bit();
2748         while (atomic_read(&csk->ref_count) != 1)
2749                 msleep(1);
2750         cnic_cm_cleanup(csk);
2751
2752         csk->flags = 0;
2753         csk_put(csk);
2754         return 0;
2755 }
2756
2757 static inline u16 cnic_get_vlan(struct net_device *dev,
2758                                 struct net_device **vlan_dev)
2759 {
2760         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2761                 *vlan_dev = vlan_dev_real_dev(dev);
2762                 return vlan_dev_vlan_id(dev);
2763         }
2764         *vlan_dev = dev;
2765         return 0;
2766 }
2767
2768 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
2769                              struct dst_entry **dst)
2770 {
2771 #if defined(CONFIG_INET)
2772         struct flowi fl;
2773         int err;
2774         struct rtable *rt;
2775
2776         memset(&fl, 0, sizeof(fl));
2777         fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
2778
2779         err = ip_route_output_key(&init_net, &rt, &fl);
2780         if (!err)
2781                 *dst = &rt->u.dst;
2782         return err;
2783 #else
2784         return -ENETUNREACH;
2785 #endif
2786 }
2787
2788 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
2789                              struct dst_entry **dst)
2790 {
2791 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2792         struct flowi fl;
2793
2794         memset(&fl, 0, sizeof(fl));
2795         ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
2796         if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
2797                 fl.oif = dst_addr->sin6_scope_id;
2798
2799         *dst = ip6_route_output(&init_net, NULL, &fl);
2800         if (*dst)
2801                 return 0;
2802 #endif
2803
2804         return -ENETUNREACH;
2805 }
2806
2807 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
2808                                            int ulp_type)
2809 {
2810         struct cnic_dev *dev = NULL;
2811         struct dst_entry *dst;
2812         struct net_device *netdev = NULL;
2813         int err = -ENETUNREACH;
2814
2815         if (dst_addr->sin_family == AF_INET)
2816                 err = cnic_get_v4_route(dst_addr, &dst);
2817         else if (dst_addr->sin_family == AF_INET6) {
2818                 struct sockaddr_in6 *dst_addr6 =
2819                         (struct sockaddr_in6 *) dst_addr;
2820
2821                 err = cnic_get_v6_route(dst_addr6, &dst);
2822         } else
2823                 return NULL;
2824
2825         if (err)
2826                 return NULL;
2827
2828         if (!dst->dev)
2829                 goto done;
2830
2831         cnic_get_vlan(dst->dev, &netdev);
2832
2833         dev = cnic_from_netdev(netdev);
2834
2835 done:
2836         dst_release(dst);
2837         if (dev)
2838                 cnic_put(dev);
2839         return dev;
2840 }
2841
2842 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2843 {
2844         struct cnic_dev *dev = csk->dev;
2845         struct cnic_local *cp = dev->cnic_priv;
2846
2847         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
2848 }
2849
2850 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2851 {
2852         struct cnic_dev *dev = csk->dev;
2853         struct cnic_local *cp = dev->cnic_priv;
2854         int is_v6, err, rc = -ENETUNREACH;
2855         struct dst_entry *dst;
2856         struct net_device *realdev;
2857         u32 local_port;
2858
2859         if (saddr->local.v6.sin6_family == AF_INET6 &&
2860             saddr->remote.v6.sin6_family == AF_INET6)
2861                 is_v6 = 1;
2862         else if (saddr->local.v4.sin_family == AF_INET &&
2863                  saddr->remote.v4.sin_family == AF_INET)
2864                 is_v6 = 0;
2865         else
2866                 return -EINVAL;
2867
2868         clear_bit(SK_F_IPV6, &csk->flags);
2869
2870         if (is_v6) {
2871 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2872                 set_bit(SK_F_IPV6, &csk->flags);
2873                 err = cnic_get_v6_route(&saddr->remote.v6, &dst);
2874                 if (err)
2875                         return err;
2876
2877                 if (!dst || dst->error || !dst->dev)
2878                         goto err_out;
2879
2880                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
2881                        sizeof(struct in6_addr));
2882                 csk->dst_port = saddr->remote.v6.sin6_port;
2883                 local_port = saddr->local.v6.sin6_port;
2884 #else
2885                 return rc;
2886 #endif
2887
2888         } else {
2889                 err = cnic_get_v4_route(&saddr->remote.v4, &dst);
2890                 if (err)
2891                         return err;
2892
2893                 if (!dst || dst->error || !dst->dev)
2894                         goto err_out;
2895
2896                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
2897                 csk->dst_port = saddr->remote.v4.sin_port;
2898                 local_port = saddr->local.v4.sin_port;
2899         }
2900
2901         csk->vlan_id = cnic_get_vlan(dst->dev, &realdev);
2902         if (realdev != dev->netdev)
2903                 goto err_out;
2904
2905         if (local_port >= CNIC_LOCAL_PORT_MIN &&
2906             local_port < CNIC_LOCAL_PORT_MAX) {
2907                 if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
2908                         local_port = 0;
2909         } else
2910                 local_port = 0;
2911
2912         if (!local_port) {
2913                 local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
2914                 if (local_port == -1) {
2915                         rc = -ENOMEM;
2916                         goto err_out;
2917                 }
2918         }
2919         csk->src_port = local_port;
2920
2921         csk->mtu = dst_mtu(dst);
2922         rc = 0;
2923
2924 err_out:
2925         dst_release(dst);
2926         return rc;
2927 }
2928
2929 static void cnic_init_csk_state(struct cnic_sock *csk)
2930 {
2931         csk->state = 0;
2932         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
2933         clear_bit(SK_F_CLOSING, &csk->flags);
2934 }
2935
2936 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2937 {
2938         int err = 0;
2939
2940         if (!cnic_in_use(csk))
2941                 return -EINVAL;
2942
2943         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
2944                 return -EINVAL;
2945
2946         cnic_init_csk_state(csk);
2947
2948         err = cnic_get_route(csk, saddr);
2949         if (err)
2950                 goto err_out;
2951
2952         err = cnic_resolve_addr(csk, saddr);
2953         if (!err)
2954                 return 0;
2955
2956 err_out:
2957         clear_bit(SK_F_CONNECT_START, &csk->flags);
2958         return err;
2959 }
2960
2961 static int cnic_cm_abort(struct cnic_sock *csk)
2962 {
2963         struct cnic_local *cp = csk->dev->cnic_priv;
2964         u32 opcode;
2965
2966         if (!cnic_in_use(csk))
2967                 return -EINVAL;
2968
2969         if (cnic_abort_prep(csk))
2970                 return cnic_cm_abort_req(csk);
2971
2972         /* Getting here means that we haven't started connect, or
2973          * connect was not successful.
2974          */
2975
2976         csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2977         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
2978                 opcode = csk->state;
2979         else
2980                 opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
2981         cp->close_conn(csk, opcode);
2982
2983         return 0;
2984 }
2985
2986 static int cnic_cm_close(struct cnic_sock *csk)
2987 {
2988         if (!cnic_in_use(csk))
2989                 return -EINVAL;
2990
2991         if (cnic_close_prep(csk)) {
2992                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2993                 return cnic_cm_close_req(csk);
2994         }
2995         return 0;
2996 }
2997
2998 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
2999                            u8 opcode)
3000 {
3001         struct cnic_ulp_ops *ulp_ops;
3002         int ulp_type = csk->ulp_type;
3003
3004         rcu_read_lock();
3005         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3006         if (ulp_ops) {
3007                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3008                         ulp_ops->cm_connect_complete(csk);
3009                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3010                         ulp_ops->cm_close_complete(csk);
3011                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3012                         ulp_ops->cm_remote_abort(csk);
3013                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3014                         ulp_ops->cm_abort_complete(csk);
3015                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3016                         ulp_ops->cm_remote_close(csk);
3017         }
3018         rcu_read_unlock();
3019 }
3020
3021 static int cnic_cm_set_pg(struct cnic_sock *csk)
3022 {
3023         if (cnic_offld_prep(csk)) {
3024                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3025                         cnic_cm_update_pg(csk);
3026                 else
3027                         cnic_cm_offload_pg(csk);
3028         }
3029         return 0;
3030 }
3031
3032 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3033 {
3034         struct cnic_local *cp = dev->cnic_priv;
3035         u32 l5_cid = kcqe->pg_host_opaque;
3036         u8 opcode = kcqe->op_code;
3037         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3038
3039         csk_hold(csk);
3040         if (!cnic_in_use(csk))
3041                 goto done;
3042
3043         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3044                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3045                 goto done;
3046         }
3047         csk->pg_cid = kcqe->pg_cid;
3048         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3049         cnic_cm_conn_req(csk);
3050
3051 done:
3052         csk_put(csk);
3053 }
3054
3055 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3056 {
3057         struct cnic_local *cp = dev->cnic_priv;
3058         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3059         u8 opcode = l4kcqe->op_code;
3060         u32 l5_cid;
3061         struct cnic_sock *csk;
3062
3063         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3064             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3065                 cnic_cm_process_offld_pg(dev, l4kcqe);
3066                 return;
3067         }
3068
3069         l5_cid = l4kcqe->conn_id;
3070         if (opcode & 0x80)
3071                 l5_cid = l4kcqe->cid;
3072         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3073                 return;
3074
3075         csk = &cp->csk_tbl[l5_cid];
3076         csk_hold(csk);
3077
3078         if (!cnic_in_use(csk)) {
3079                 csk_put(csk);
3080                 return;
3081         }
3082
3083         switch (opcode) {
3084         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3085                 if (l4kcqe->status == 0)
3086                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3087
3088                 smp_mb__before_clear_bit();
3089                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3090                 cnic_cm_upcall(cp, csk, opcode);
3091                 break;
3092
3093         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3094                 if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags))
3095                         csk->state = opcode;
3096                 /* fall through */
3097         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3098         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3099         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3100         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3101                 cp->close_conn(csk, opcode);
3102                 break;
3103
3104         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3105                 cnic_cm_upcall(cp, csk, opcode);
3106                 break;
3107         }
3108         csk_put(csk);
3109 }
3110
3111 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3112 {
3113         struct cnic_dev *dev = data;
3114         int i;
3115
3116         for (i = 0; i < num; i++)
3117                 cnic_cm_process_kcqe(dev, kcqe[i]);
3118 }
3119
3120 static struct cnic_ulp_ops cm_ulp_ops = {
3121         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3122 };
3123
3124 static void cnic_cm_free_mem(struct cnic_dev *dev)
3125 {
3126         struct cnic_local *cp = dev->cnic_priv;
3127
3128         kfree(cp->csk_tbl);
3129         cp->csk_tbl = NULL;
3130         cnic_free_id_tbl(&cp->csk_port_tbl);
3131 }
3132
3133 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3134 {
3135         struct cnic_local *cp = dev->cnic_priv;
3136
3137         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3138                               GFP_KERNEL);
3139         if (!cp->csk_tbl)
3140                 return -ENOMEM;
3141
3142         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3143                              CNIC_LOCAL_PORT_MIN)) {
3144                 cnic_cm_free_mem(dev);
3145                 return -ENOMEM;
3146         }
3147         return 0;
3148 }
3149
3150 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3151 {
3152         if ((opcode == csk->state) ||
3153             (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED &&
3154              csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) {
3155                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags))
3156                         return 1;
3157         }
3158         return 0;
3159 }
3160
3161 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3162 {
3163         struct cnic_dev *dev = csk->dev;
3164         struct cnic_local *cp = dev->cnic_priv;
3165
3166         clear_bit(SK_F_CONNECT_START, &csk->flags);
3167         if (cnic_ready_to_close(csk, opcode)) {
3168                 cnic_close_conn(csk);
3169                 cnic_cm_upcall(cp, csk, opcode);
3170         }
3171 }
3172
3173 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3174 {
3175 }
3176
3177 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3178 {
3179         u32 seed;
3180
3181         get_random_bytes(&seed, 4);
3182         cnic_ctx_wr(dev, 45, 0, seed);
3183         return 0;
3184 }
3185
3186 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3187 {
3188         struct cnic_dev *dev = csk->dev;
3189         struct cnic_local *cp = dev->cnic_priv;
3190         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3191         union l5cm_specific_data l5_data;
3192         u32 cmd = 0;
3193         int close_complete = 0;
3194
3195         switch (opcode) {
3196         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3197         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3198         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3199                 if (cnic_ready_to_close(csk, opcode))
3200                         cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3201                 break;
3202         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3203                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3204                 break;
3205         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3206                 close_complete = 1;
3207                 break;
3208         }
3209         if (cmd) {
3210                 memset(&l5_data, 0, sizeof(l5_data));
3211
3212                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3213                                     &l5_data);
3214         } else if (close_complete) {
3215                 ctx->timestamp = jiffies;
3216                 cnic_close_conn(csk);
3217                 cnic_cm_upcall(cp, csk, csk->state);
3218         }
3219 }
3220
3221 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3222 {
3223 }
3224
3225 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3226 {
3227         struct cnic_local *cp = dev->cnic_priv;
3228         int func = CNIC_FUNC(cp);
3229
3230         cnic_init_bnx2x_mac(dev);
3231         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3232
3233         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3234                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(func), 0);
3235
3236         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3237                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(func), 1);
3238         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3239                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(func),
3240                 DEF_MAX_DA_COUNT);
3241
3242         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3243                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(func), DEF_TTL);
3244         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3245                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(func), DEF_TOS);
3246         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3247                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(func), 2);
3248         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3249                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(func), DEF_SWS_TIMER);
3250
3251         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(func),
3252                 DEF_MAX_CWND);
3253         return 0;
3254 }
3255
3256 static int cnic_cm_open(struct cnic_dev *dev)
3257 {
3258         struct cnic_local *cp = dev->cnic_priv;
3259         int err;
3260
3261         err = cnic_cm_alloc_mem(dev);
3262         if (err)
3263                 return err;
3264
3265         err = cp->start_cm(dev);
3266
3267         if (err)
3268                 goto err_out;
3269
3270         dev->cm_create = cnic_cm_create;
3271         dev->cm_destroy = cnic_cm_destroy;
3272         dev->cm_connect = cnic_cm_connect;
3273         dev->cm_abort = cnic_cm_abort;
3274         dev->cm_close = cnic_cm_close;
3275         dev->cm_select_dev = cnic_cm_select_dev;
3276
3277         cp->ulp_handle[CNIC_ULP_L4] = dev;
3278         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
3279         return 0;
3280
3281 err_out:
3282         cnic_cm_free_mem(dev);
3283         return err;
3284 }
3285
3286 static int cnic_cm_shutdown(struct cnic_dev *dev)
3287 {
3288         struct cnic_local *cp = dev->cnic_priv;
3289         int i;
3290
3291         cp->stop_cm(dev);
3292
3293         if (!cp->csk_tbl)
3294                 return 0;
3295
3296         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
3297                 struct cnic_sock *csk = &cp->csk_tbl[i];
3298
3299                 clear_bit(SK_F_INUSE, &csk->flags);
3300                 cnic_cm_cleanup(csk);
3301         }
3302         cnic_cm_free_mem(dev);
3303
3304         return 0;
3305 }
3306
3307 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
3308 {
3309         struct cnic_local *cp = dev->cnic_priv;
3310         u32 cid_addr;
3311         int i;
3312
3313         if (CHIP_NUM(cp) == CHIP_NUM_5709)
3314                 return;
3315
3316         cid_addr = GET_CID_ADDR(cid);
3317
3318         for (i = 0; i < CTX_SIZE; i += 4)
3319                 cnic_ctx_wr(dev, cid_addr, i, 0);
3320 }
3321
3322 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
3323 {
3324         struct cnic_local *cp = dev->cnic_priv;
3325         int ret = 0, i;
3326         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
3327
3328         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3329                 return 0;
3330
3331         for (i = 0; i < cp->ctx_blks; i++) {
3332                 int j;
3333                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
3334                 u32 val;
3335
3336                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
3337
3338                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
3339                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
3340                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
3341                         (u64) cp->ctx_arr[i].mapping >> 32);
3342                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
3343                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
3344                 for (j = 0; j < 10; j++) {
3345
3346                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
3347                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
3348                                 break;
3349                         udelay(5);
3350                 }
3351                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
3352                         ret = -EBUSY;
3353                         break;
3354                 }
3355         }
3356         return ret;
3357 }
3358
3359 static void cnic_free_irq(struct cnic_dev *dev)
3360 {
3361         struct cnic_local *cp = dev->cnic_priv;
3362         struct cnic_eth_dev *ethdev = cp->ethdev;
3363
3364         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3365                 cp->disable_int_sync(dev);
3366                 tasklet_disable(&cp->cnic_irq_task);
3367                 free_irq(ethdev->irq_arr[0].vector, dev);
3368         }
3369 }
3370
3371 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
3372 {
3373         struct cnic_local *cp = dev->cnic_priv;
3374         struct cnic_eth_dev *ethdev = cp->ethdev;
3375
3376         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3377                 int err, i = 0;
3378                 int sblk_num = cp->status_blk_num;
3379                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
3380                            BNX2_HC_SB_CONFIG_1;
3381
3382                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
3383
3384                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
3385                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
3386                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
3387
3388                 cp->bnx2_status_blk = cp->status_blk;
3389                 cp->last_status_idx = cp->bnx2_status_blk->status_idx;
3390                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
3391                              (unsigned long) dev);
3392                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3393                                   "cnic", dev);
3394                 if (err) {
3395                         tasklet_disable(&cp->cnic_irq_task);
3396                         return err;
3397                 }
3398                 while (cp->bnx2_status_blk->status_completion_producer_index &&
3399                        i < 10) {
3400                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
3401                                 1 << (11 + sblk_num));
3402                         udelay(10);
3403                         i++;
3404                         barrier();
3405                 }
3406                 if (cp->bnx2_status_blk->status_completion_producer_index) {
3407                         cnic_free_irq(dev);
3408                         goto failed;
3409                 }
3410
3411         } else {
3412                 struct status_block *sblk = cp->status_blk;
3413                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
3414                 int i = 0;
3415
3416                 while (sblk->status_completion_producer_index && i < 10) {
3417                         CNIC_WR(dev, BNX2_HC_COMMAND,
3418                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
3419                         udelay(10);
3420                         i++;
3421                         barrier();
3422                 }
3423                 if (sblk->status_completion_producer_index)
3424                         goto failed;
3425
3426         }
3427         return 0;
3428
3429 failed:
3430         printk(KERN_ERR PFX "%s: " "KCQ index not resetting to 0.\n",
3431                dev->netdev->name);
3432         return -EBUSY;
3433 }
3434
3435 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
3436 {
3437         struct cnic_local *cp = dev->cnic_priv;
3438         struct cnic_eth_dev *ethdev = cp->ethdev;
3439
3440         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3441                 return;
3442
3443         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3444                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3445 }
3446
3447 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
3448 {
3449         struct cnic_local *cp = dev->cnic_priv;
3450         struct cnic_eth_dev *ethdev = cp->ethdev;
3451
3452         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3453                 return;
3454
3455         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3456                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
3457         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
3458         synchronize_irq(ethdev->irq_arr[0].vector);
3459 }
3460
3461 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
3462 {
3463         struct cnic_local *cp = dev->cnic_priv;
3464         struct cnic_eth_dev *ethdev = cp->ethdev;
3465         u32 cid_addr, tx_cid, sb_id;
3466         u32 val, offset0, offset1, offset2, offset3;
3467         int i;
3468         struct tx_bd *txbd;
3469         dma_addr_t buf_map;
3470         struct status_block *s_blk = cp->status_blk;
3471
3472         sb_id = cp->status_blk_num;
3473         tx_cid = 20;
3474         cnic_init_context(dev, tx_cid);
3475         cnic_init_context(dev, tx_cid + 1);
3476         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
3477         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3478                 struct status_block_msix *sblk = cp->status_blk;
3479
3480                 tx_cid = TX_TSS_CID + sb_id - 1;
3481                 cnic_init_context(dev, tx_cid);
3482                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
3483                         (TX_TSS_CID << 7));
3484                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
3485         }
3486         cp->tx_cons = *cp->tx_cons_ptr;
3487
3488         cid_addr = GET_CID_ADDR(tx_cid);
3489         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
3490                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
3491
3492                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
3493                         cnic_ctx_wr(dev, cid_addr2, i, 0);
3494
3495                 offset0 = BNX2_L2CTX_TYPE_XI;
3496                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
3497                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
3498                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
3499         } else {
3500                 offset0 = BNX2_L2CTX_TYPE;
3501                 offset1 = BNX2_L2CTX_CMD_TYPE;
3502                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
3503                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
3504         }
3505         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
3506         cnic_ctx_wr(dev, cid_addr, offset0, val);
3507
3508         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
3509         cnic_ctx_wr(dev, cid_addr, offset1, val);
3510
3511         txbd = (struct tx_bd *) cp->l2_ring;
3512
3513         buf_map = cp->l2_buf_map;
3514         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
3515                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
3516                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3517         }
3518         val = (u64) cp->l2_ring_map >> 32;
3519         cnic_ctx_wr(dev, cid_addr, offset2, val);
3520         txbd->tx_bd_haddr_hi = val;
3521
3522         val = (u64) cp->l2_ring_map & 0xffffffff;
3523         cnic_ctx_wr(dev, cid_addr, offset3, val);
3524         txbd->tx_bd_haddr_lo = val;
3525 }
3526
3527 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
3528 {
3529         struct cnic_local *cp = dev->cnic_priv;
3530         struct cnic_eth_dev *ethdev = cp->ethdev;
3531         u32 cid_addr, sb_id, val, coal_reg, coal_val;
3532         int i;
3533         struct rx_bd *rxbd;
3534         struct status_block *s_blk = cp->status_blk;
3535
3536         sb_id = cp->status_blk_num;
3537         cnic_init_context(dev, 2);
3538         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
3539         coal_reg = BNX2_HC_COMMAND;
3540         coal_val = CNIC_RD(dev, coal_reg);
3541         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3542                 struct status_block_msix *sblk = cp->status_blk;
3543
3544                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
3545                 coal_reg = BNX2_HC_COALESCE_NOW;
3546                 coal_val = 1 << (11 + sb_id);
3547         }
3548         i = 0;
3549         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
3550                 CNIC_WR(dev, coal_reg, coal_val);
3551                 udelay(10);
3552                 i++;
3553                 barrier();
3554         }
3555         cp->rx_cons = *cp->rx_cons_ptr;
3556
3557         cid_addr = GET_CID_ADDR(2);
3558         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
3559               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
3560         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
3561
3562         if (sb_id == 0)
3563                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
3564         else
3565                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
3566         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
3567
3568         rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE);
3569         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
3570                 dma_addr_t buf_map;
3571                 int n = (i % cp->l2_rx_ring_size) + 1;
3572
3573                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3574                 rxbd->rx_bd_len = cp->l2_single_buf_size;
3575                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
3576                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
3577                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3578         }
3579         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3580         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
3581         rxbd->rx_bd_haddr_hi = val;
3582
3583         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3584         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
3585         rxbd->rx_bd_haddr_lo = val;
3586
3587         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
3588         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
3589 }
3590
3591 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
3592 {
3593         struct kwqe *wqes[1], l2kwqe;
3594
3595         memset(&l2kwqe, 0, sizeof(l2kwqe));
3596         wqes[0] = &l2kwqe;
3597         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) |
3598                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
3599                                KWQE_OPCODE_SHIFT) | 2;
3600         dev->submit_kwqes(dev, wqes, 1);
3601 }
3602
3603 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
3604 {
3605         struct cnic_local *cp = dev->cnic_priv;
3606         u32 val;
3607
3608         val = cp->func << 2;
3609
3610         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
3611
3612         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3613                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
3614         dev->mac_addr[0] = (u8) (val >> 8);
3615         dev->mac_addr[1] = (u8) val;
3616
3617         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
3618
3619         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3620                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
3621         dev->mac_addr[2] = (u8) (val >> 24);
3622         dev->mac_addr[3] = (u8) (val >> 16);
3623         dev->mac_addr[4] = (u8) (val >> 8);
3624         dev->mac_addr[5] = (u8) val;
3625
3626         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
3627
3628         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
3629         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3630                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
3631
3632         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
3633         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
3634         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
3635 }
3636
3637 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
3638 {
3639         struct cnic_local *cp = dev->cnic_priv;
3640         struct cnic_eth_dev *ethdev = cp->ethdev;
3641         struct status_block *sblk = cp->status_blk;
3642         u32 val;
3643         int err;
3644
3645         cnic_set_bnx2_mac(dev);
3646
3647         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
3648         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
3649         if (BCM_PAGE_BITS > 12)
3650                 val |= (12 - 8)  << 4;
3651         else
3652                 val |= (BCM_PAGE_BITS - 8)  << 4;
3653
3654         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
3655
3656         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
3657         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
3658         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
3659
3660         err = cnic_setup_5709_context(dev, 1);
3661         if (err)
3662                 return err;
3663
3664         cnic_init_context(dev, KWQ_CID);
3665         cnic_init_context(dev, KCQ_CID);
3666
3667         cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
3668         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
3669
3670         cp->max_kwq_idx = MAX_KWQ_IDX;
3671         cp->kwq_prod_idx = 0;
3672         cp->kwq_con_idx = 0;
3673         cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT;
3674
3675         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
3676                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
3677         else
3678                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
3679
3680         /* Initialize the kernel work queue context. */
3681         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3682               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3683         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val);
3684
3685         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
3686         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3687
3688         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
3689         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3690
3691         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
3692         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3693
3694         val = (u32) cp->kwq_info.pgtbl_map;
3695         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3696
3697         cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
3698         cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
3699
3700         cp->kcq_prod_idx = 0;
3701
3702         /* Initialize the kernel complete queue context. */
3703         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3704               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3705         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val);
3706
3707         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
3708         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3709
3710         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
3711         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3712
3713         val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32);
3714         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3715
3716         val = (u32) cp->kcq_info.pgtbl_map;
3717         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3718
3719         cp->int_num = 0;
3720         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3721                 u32 sb_id = cp->status_blk_num;
3722                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
3723
3724                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
3725                 cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3726                 cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3727         }
3728
3729         /* Enable Commnad Scheduler notification when we write to the
3730          * host producer index of the kernel contexts. */
3731         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
3732
3733         /* Enable Command Scheduler notification when we write to either
3734          * the Send Queue or Receive Queue producer indexes of the kernel
3735          * bypass contexts. */
3736         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
3737         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
3738
3739         /* Notify COM when the driver post an application buffer. */
3740         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
3741
3742         /* Set the CP and COM doorbells.  These two processors polls the
3743          * doorbell for a non zero value before running.  This must be done
3744          * after setting up the kernel queue contexts. */
3745         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
3746         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
3747
3748         cnic_init_bnx2_tx_ring(dev);
3749         cnic_init_bnx2_rx_ring(dev);
3750
3751         err = cnic_init_bnx2_irq(dev);
3752         if (err) {
3753                 printk(KERN_ERR PFX "%s: cnic_init_irq failed\n",
3754                        dev->netdev->name);
3755                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
3756                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
3757                 return err;
3758         }
3759
3760         return 0;
3761 }
3762
3763 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
3764 {
3765         struct cnic_local *cp = dev->cnic_priv;
3766         struct cnic_eth_dev *ethdev = cp->ethdev;
3767         u32 start_offset = ethdev->ctx_tbl_offset;
3768         int i;
3769
3770         for (i = 0; i < cp->ctx_blks; i++) {
3771                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
3772                 dma_addr_t map = ctx->mapping;
3773
3774                 if (cp->ctx_align) {
3775                         unsigned long mask = cp->ctx_align - 1;
3776
3777                         map = (map + mask) & ~mask;
3778                 }
3779
3780                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
3781         }
3782 }
3783
3784 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
3785 {
3786         struct cnic_local *cp = dev->cnic_priv;
3787         struct cnic_eth_dev *ethdev = cp->ethdev;
3788         int err = 0;
3789
3790         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
3791                      (unsigned long) dev);
3792         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3793                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3794                                   "cnic", dev);
3795                 if (err)
3796                         tasklet_disable(&cp->cnic_irq_task);
3797         }
3798         return err;
3799 }
3800
3801 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
3802 {
3803         struct cnic_local *cp = dev->cnic_priv;
3804         u8 sb_id = cp->status_blk_num;
3805         int port = CNIC_PORT(cp);
3806
3807         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
3808                  CSTORM_SB_HC_TIMEOUT_C_OFFSET(port, sb_id,
3809                                                HC_INDEX_C_ISCSI_EQ_CONS),
3810                  64 / 12);
3811         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
3812                   CSTORM_SB_HC_DISABLE_C_OFFSET(port, sb_id,
3813                                                 HC_INDEX_C_ISCSI_EQ_CONS), 0);
3814 }
3815
3816 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
3817 {
3818 }
3819
3820 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev)
3821 {
3822         struct cnic_local *cp = dev->cnic_priv;
3823         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) cp->l2_ring;
3824         struct eth_context *context;
3825         struct regpair context_addr;
3826         dma_addr_t buf_map;
3827         int func = CNIC_FUNC(cp);
3828         int port = CNIC_PORT(cp);
3829         int i;
3830         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3831         u32 val;
3832
3833         memset(txbd, 0, BCM_PAGE_SIZE);
3834
3835         buf_map = cp->l2_buf_map;
3836         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
3837                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
3838                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
3839
3840                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3841                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3842                 reg_bd->addr_hi = start_bd->addr_hi;
3843                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
3844                 start_bd->nbytes = cpu_to_le16(0x10);
3845                 start_bd->nbd = cpu_to_le16(3);
3846                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
3847                 start_bd->general_data = (UNICAST_ADDRESS <<
3848                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
3849                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
3850
3851         }
3852         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 1, &context_addr);
3853
3854         val = (u64) cp->l2_ring_map >> 32;
3855         txbd->next_bd.addr_hi = cpu_to_le32(val);
3856
3857         context->xstorm_st_context.tx_bd_page_base_hi = val;
3858
3859         val = (u64) cp->l2_ring_map & 0xffffffff;
3860         txbd->next_bd.addr_lo = cpu_to_le32(val);
3861
3862         context->xstorm_st_context.tx_bd_page_base_lo = val;
3863
3864         context->cstorm_st_context.sb_index_number =
3865                 HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS;
3866         context->cstorm_st_context.status_block_id = BNX2X_DEF_SB_ID;
3867
3868         context->xstorm_st_context.statistics_data = (cli |
3869                                 XSTORM_ETH_ST_CONTEXT_STATISTICS_ENABLE);
3870
3871         context->xstorm_ag_context.cdu_reserved =
3872                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3873                                         CDU_REGION_NUMBER_XCM_AG,
3874                                         ETH_CONNECTION_TYPE);
3875
3876         /* reset xstorm per client statistics */
3877         val = BAR_XSTRORM_INTMEM +
3878               XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3879         for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
3880                 CNIC_WR(dev, val + i * 4, 0);
3881
3882         cp->tx_cons_ptr =
3883                 &cp->bnx2x_def_status_blk->c_def_status_block.index_values[
3884                         HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS];
3885 }
3886
3887 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev)
3888 {
3889         struct cnic_local *cp = dev->cnic_priv;
3890         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (cp->l2_ring +
3891                                 BCM_PAGE_SIZE);
3892         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
3893                                 (cp->l2_ring + (2 * BCM_PAGE_SIZE));
3894         struct eth_context *context;
3895         struct regpair context_addr;
3896         int i;
3897         int port = CNIC_PORT(cp);
3898         int func = CNIC_FUNC(cp);
3899         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3900         u32 val;
3901         struct tstorm_eth_client_config tstorm_client = {0};
3902
3903         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
3904                 dma_addr_t buf_map;
3905                 int n = (i % cp->l2_rx_ring_size) + 1;
3906
3907                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3908                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3909                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3910         }
3911         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 0, &context_addr);
3912
3913         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3914         rxbd->addr_hi = cpu_to_le32(val);
3915
3916         context->ustorm_st_context.common.bd_page_base_hi = val;
3917
3918         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3919         rxbd->addr_lo = cpu_to_le32(val);
3920
3921         context->ustorm_st_context.common.bd_page_base_lo = val;
3922
3923         context->ustorm_st_context.common.sb_index_numbers =
3924                                                 BNX2X_ISCSI_RX_SB_INDEX_NUM;
3925         context->ustorm_st_context.common.clientId = cli;
3926         context->ustorm_st_context.common.status_block_id = BNX2X_DEF_SB_ID;
3927         context->ustorm_st_context.common.flags =
3928                 USTORM_ETH_ST_CONTEXT_CONFIG_ENABLE_STATISTICS;
3929         context->ustorm_st_context.common.statistics_counter_id = cli;
3930         context->ustorm_st_context.common.mc_alignment_log_size = 0;
3931         context->ustorm_st_context.common.bd_buff_size =
3932                                                 cp->l2_single_buf_size;
3933
3934         context->ustorm_ag_context.cdu_usage =
3935                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3936                                         CDU_REGION_NUMBER_UCM_AG,
3937                                         ETH_CONNECTION_TYPE);
3938
3939         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
3940         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
3941         rxcqe->addr_hi = cpu_to_le32(val);
3942
3943         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3944                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli) + 4, val);
3945
3946         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3947                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli) + 4, val);
3948
3949         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
3950         rxcqe->addr_lo = cpu_to_le32(val);
3951
3952         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3953                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli), val);
3954
3955         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3956                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli), val);
3957
3958         /* client tstorm info */
3959         tstorm_client.mtu = cp->l2_single_buf_size - 14;
3960         tstorm_client.config_flags =
3961                         (TSTORM_ETH_CLIENT_CONFIG_E1HOV_REM_ENABLE |
3962                         TSTORM_ETH_CLIENT_CONFIG_STATSITICS_ENABLE);
3963         tstorm_client.statistics_counter_id = cli;
3964
3965         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
3966                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli),
3967                    ((u32 *)&tstorm_client)[0]);
3968         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
3969                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli) + 4,
3970                    ((u32 *)&tstorm_client)[1]);
3971
3972         /* reset tstorm per client statistics */
3973         val = BAR_TSTRORM_INTMEM +
3974               TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3975         for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
3976                 CNIC_WR(dev, val + i * 4, 0);
3977
3978         /* reset ustorm per client statistics */
3979         val = BAR_USTRORM_INTMEM +
3980               USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3981         for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
3982                 CNIC_WR(dev, val + i * 4, 0);
3983
3984         cp->rx_cons_ptr =
3985                 &cp->bnx2x_def_status_blk->u_def_status_block.index_values[
3986                         HC_INDEX_DEF_U_ETH_ISCSI_RX_CQ_CONS];
3987 }
3988
3989 static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
3990 {
3991         struct cnic_local *cp = dev->cnic_priv;
3992         u32 base, addr, val;
3993         int port = CNIC_PORT(cp);
3994
3995         dev->max_iscsi_conn = 0;
3996         base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
3997         if (base < 0xa0000 || base >= 0xc0000)
3998                 return;
3999
4000         val = BNX2X_SHMEM_ADDR(base,
4001                 dev_info.port_hw_config[port].iscsi_mac_upper);
4002
4003         dev->mac_addr[0] = (u8) (val >> 8);
4004         dev->mac_addr[1] = (u8) val;
4005
4006         val = BNX2X_SHMEM_ADDR(base,
4007                 dev_info.port_hw_config[port].iscsi_mac_lower);
4008
4009         dev->mac_addr[2] = (u8) (val >> 24);
4010         dev->mac_addr[3] = (u8) (val >> 16);
4011         dev->mac_addr[4] = (u8) (val >> 8);
4012         dev->mac_addr[5] = (u8) val;
4013
4014         addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
4015         val = CNIC_RD(dev, addr);
4016
4017         if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
4018                 u16 val16;
4019
4020                 addr = BNX2X_SHMEM_ADDR(base,
4021                                 drv_lic_key[port].max_iscsi_init_conn);
4022                 val16 = CNIC_RD16(dev, addr);
4023
4024                 if (val16)
4025                         val16 ^= 0x1e1e;
4026                 dev->max_iscsi_conn = val16;
4027         }
4028         if (BNX2X_CHIP_IS_E1H(cp->chip_id)) {
4029                 int func = CNIC_FUNC(cp);
4030
4031                 addr = BNX2X_SHMEM_ADDR(base,
4032                                 mf_cfg.func_mf_config[func].e1hov_tag);
4033                 val = CNIC_RD(dev, addr);
4034                 val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
4035                 if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
4036                         addr = BNX2X_SHMEM_ADDR(base,
4037                                 mf_cfg.func_mf_config[func].config);
4038                         val = CNIC_RD(dev, addr);
4039                         val &= FUNC_MF_CFG_PROTOCOL_MASK;
4040                         if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
4041                                 dev->max_iscsi_conn = 0;
4042                 }
4043         }
4044 }
4045
4046 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4047 {
4048         struct cnic_local *cp = dev->cnic_priv;
4049         int func = CNIC_FUNC(cp), ret, i;
4050         int port = CNIC_PORT(cp);
4051         u16 eq_idx;
4052         u8 sb_id = cp->status_blk_num;
4053
4054         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4055                                BNX2X_ISCSI_START_CID);
4056
4057         if (ret)
4058                 return -ENOMEM;
4059
4060         cp->kcq_io_addr = BAR_CSTRORM_INTMEM +
4061                           CSTORM_ISCSI_EQ_PROD_OFFSET(func, 0);
4062         cp->kcq_prod_idx = 0;
4063
4064         cnic_get_bnx2x_iscsi_info(dev);
4065
4066         /* Only 1 EQ */
4067         CNIC_WR16(dev, cp->kcq_io_addr, MAX_KCQ_IDX);
4068         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4069                 CSTORM_ISCSI_EQ_CONS_OFFSET(func, 0), 0);
4070         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4071                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0),
4072                 cp->kcq_info.pg_map_arr[1] & 0xffffffff);
4073         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4074                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0) + 4,
4075                 (u64) cp->kcq_info.pg_map_arr[1] >> 32);
4076         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4077                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0),
4078                 cp->kcq_info.pg_map_arr[0] & 0xffffffff);
4079         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4080                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0) + 4,
4081                 (u64) cp->kcq_info.pg_map_arr[0] >> 32);
4082         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4083                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(func, 0), 1);
4084         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4085                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(func, 0), cp->status_blk_num);
4086         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4087                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(func, 0),
4088                 HC_INDEX_C_ISCSI_EQ_CONS);
4089
4090         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4091                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4092                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i),
4093                         cp->conn_buf_info.pgtbl[2 * i]);
4094                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4095                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i) + 4,
4096                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4097         }
4098
4099         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4100                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func),
4101                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4102         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4103                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func) + 4,
4104                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4105
4106         cnic_setup_bnx2x_context(dev);
4107
4108         eq_idx = CNIC_RD16(dev, BAR_CSTRORM_INTMEM +
4109                            CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4110                            offsetof(struct cstorm_status_block_c,
4111                                     index_values[HC_INDEX_C_ISCSI_EQ_CONS]));
4112         if (eq_idx != 0) {
4113                 printk(KERN_ERR PFX "%s: EQ cons index %x != 0\n",
4114                        dev->netdev->name, eq_idx);
4115                 return -EBUSY;
4116         }
4117         ret = cnic_init_bnx2x_irq(dev);
4118         if (ret)
4119                 return ret;
4120
4121         cnic_init_bnx2x_tx_ring(dev);
4122         cnic_init_bnx2x_rx_ring(dev);
4123
4124         return 0;
4125 }
4126
4127 static void cnic_init_rings(struct cnic_dev *dev)
4128 {
4129         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4130                 cnic_init_bnx2_tx_ring(dev);
4131                 cnic_init_bnx2_rx_ring(dev);
4132         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4133                 struct cnic_local *cp = dev->cnic_priv;
4134                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4135                 union l5cm_specific_data l5_data;
4136                 struct ustorm_eth_rx_producers rx_prods = {0};
4137                 u32 off, i;
4138
4139                 rx_prods.bd_prod = 0;
4140                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4141                 barrier();
4142
4143                 off = BAR_USTRORM_INTMEM +
4144                         USTORM_RX_PRODS_OFFSET(CNIC_PORT(cp), cli);
4145
4146                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4147                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4148
4149                 cnic_init_bnx2x_tx_ring(dev);
4150                 cnic_init_bnx2x_rx_ring(dev);
4151
4152                 l5_data.phy_address.lo = cli;
4153                 l5_data.phy_address.hi = 0;
4154                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4155                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4156                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
4157         }
4158 }
4159
4160 static void cnic_shutdown_rings(struct cnic_dev *dev)
4161 {
4162         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4163                 cnic_shutdown_bnx2_rx_ring(dev);
4164         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4165                 struct cnic_local *cp = dev->cnic_priv;
4166                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4167
4168                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0);
4169         }
4170 }
4171
4172 static int cnic_register_netdev(struct cnic_dev *dev)
4173 {
4174         struct cnic_local *cp = dev->cnic_priv;
4175         struct cnic_eth_dev *ethdev = cp->ethdev;
4176         int err;
4177
4178         if (!ethdev)
4179                 return -ENODEV;
4180
4181         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
4182                 return 0;
4183
4184         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4185         if (err)
4186                 printk(KERN_ERR PFX "%s: register_cnic failed\n",
4187                        dev->netdev->name);
4188
4189         return err;
4190 }
4191
4192 static void cnic_unregister_netdev(struct cnic_dev *dev)
4193 {
4194         struct cnic_local *cp = dev->cnic_priv;
4195         struct cnic_eth_dev *ethdev = cp->ethdev;
4196
4197         if (!ethdev)
4198                 return;
4199
4200         ethdev->drv_unregister_cnic(dev->netdev);
4201 }
4202
4203 static int cnic_start_hw(struct cnic_dev *dev)
4204 {
4205         struct cnic_local *cp = dev->cnic_priv;
4206         struct cnic_eth_dev *ethdev = cp->ethdev;
4207         int err;
4208
4209         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
4210                 return -EALREADY;
4211
4212         dev->regview = ethdev->io_base;
4213         cp->chip_id = ethdev->chip_id;
4214         pci_dev_get(dev->pcidev);
4215         cp->func = PCI_FUNC(dev->pcidev->devfn);
4216         cp->status_blk = ethdev->irq_arr[0].status_blk;
4217         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
4218
4219         err = cp->alloc_resc(dev);
4220         if (err) {
4221                 printk(KERN_ERR PFX "%s: allocate resource failure\n",
4222                        dev->netdev->name);
4223                 goto err1;
4224         }
4225
4226         err = cp->start_hw(dev);
4227         if (err)
4228                 goto err1;
4229
4230         err = cnic_cm_open(dev);
4231         if (err)
4232                 goto err1;
4233
4234         set_bit(CNIC_F_CNIC_UP, &dev->flags);
4235
4236         cp->enable_int(dev);
4237
4238         return 0;
4239
4240 err1:
4241         cp->free_resc(dev);
4242         pci_dev_put(dev->pcidev);
4243         return err;
4244 }
4245
4246 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
4247 {
4248         cnic_disable_bnx2_int_sync(dev);
4249
4250         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4251         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4252
4253         cnic_init_context(dev, KWQ_CID);
4254         cnic_init_context(dev, KCQ_CID);
4255
4256         cnic_setup_5709_context(dev, 0);
4257         cnic_free_irq(dev);
4258
4259         cnic_free_resc(dev);
4260 }
4261
4262
4263 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
4264 {
4265         struct cnic_local *cp = dev->cnic_priv;
4266         u8 sb_id = cp->status_blk_num;
4267         int port = CNIC_PORT(cp);
4268
4269         cnic_free_irq(dev);
4270         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4271                   CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4272                   offsetof(struct cstorm_status_block_c,
4273                            index_values[HC_INDEX_C_ISCSI_EQ_CONS]),
4274                   0);
4275         cnic_free_resc(dev);
4276 }
4277
4278 static void cnic_stop_hw(struct cnic_dev *dev)
4279 {
4280         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4281                 struct cnic_local *cp = dev->cnic_priv;
4282
4283                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
4284                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
4285                 synchronize_rcu();
4286                 cnic_cm_shutdown(dev);
4287                 cp->stop_hw(dev);
4288                 pci_dev_put(dev->pcidev);
4289         }
4290 }
4291
4292 static void cnic_free_dev(struct cnic_dev *dev)
4293 {
4294         int i = 0;
4295
4296         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
4297                 msleep(100);
4298                 i++;
4299         }
4300         if (atomic_read(&dev->ref_count) != 0)
4301                 printk(KERN_ERR PFX "%s: Failed waiting for ref count to go"
4302                                     " to zero.\n", dev->netdev->name);
4303
4304         printk(KERN_INFO PFX "Removed CNIC device: %s\n", dev->netdev->name);
4305         dev_put(dev->netdev);
4306         kfree(dev);
4307 }
4308
4309 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
4310                                        struct pci_dev *pdev)
4311 {
4312         struct cnic_dev *cdev;
4313         struct cnic_local *cp;
4314         int alloc_size;
4315
4316         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
4317
4318         cdev = kzalloc(alloc_size , GFP_KERNEL);
4319         if (cdev == NULL) {
4320                 printk(KERN_ERR PFX "%s: allocate dev struct failure\n",
4321                        dev->name);
4322                 return NULL;
4323         }
4324
4325         cdev->netdev = dev;
4326         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
4327         cdev->register_device = cnic_register_device;
4328         cdev->unregister_device = cnic_unregister_device;
4329         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
4330
4331         cp = cdev->cnic_priv;
4332         cp->dev = cdev;
4333         cp->uio_dev = -1;
4334         cp->l2_single_buf_size = 0x400;
4335         cp->l2_rx_ring_size = 3;
4336
4337         spin_lock_init(&cp->cnic_ulp_lock);
4338
4339         printk(KERN_INFO PFX "Added CNIC device: %s\n", dev->name);
4340
4341         return cdev;
4342 }
4343
4344 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
4345 {
4346         struct pci_dev *pdev;
4347         struct cnic_dev *cdev;
4348         struct cnic_local *cp;
4349         struct cnic_eth_dev *ethdev = NULL;
4350         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4351
4352         probe = symbol_get(bnx2_cnic_probe);
4353         if (probe) {
4354                 ethdev = (*probe)(dev);
4355                 symbol_put(bnx2_cnic_probe);
4356         }
4357         if (!ethdev)
4358                 return NULL;
4359
4360         pdev = ethdev->pdev;
4361         if (!pdev)
4362                 return NULL;
4363
4364         dev_hold(dev);
4365         pci_dev_get(pdev);
4366         if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
4367             pdev->device == PCI_DEVICE_ID_NX2_5709S) {
4368                 u8 rev;
4369
4370                 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
4371                 if (rev < 0x10) {
4372                         pci_dev_put(pdev);
4373                         goto cnic_err;
4374                 }
4375         }
4376         pci_dev_put(pdev);
4377
4378         cdev = cnic_alloc_dev(dev, pdev);
4379         if (cdev == NULL)
4380                 goto cnic_err;
4381
4382         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
4383         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
4384
4385         cp = cdev->cnic_priv;
4386         cp->ethdev = ethdev;
4387         cdev->pcidev = pdev;
4388
4389         cp->cnic_ops = &cnic_bnx2_ops;
4390         cp->start_hw = cnic_start_bnx2_hw;
4391         cp->stop_hw = cnic_stop_bnx2_hw;
4392         cp->setup_pgtbl = cnic_setup_page_tbl;
4393         cp->alloc_resc = cnic_alloc_bnx2_resc;
4394         cp->free_resc = cnic_free_resc;
4395         cp->start_cm = cnic_cm_init_bnx2_hw;
4396         cp->stop_cm = cnic_cm_stop_bnx2_hw;
4397         cp->enable_int = cnic_enable_bnx2_int;
4398         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
4399         cp->close_conn = cnic_close_bnx2_conn;
4400         cp->next_idx = cnic_bnx2_next_idx;
4401         cp->hw_idx = cnic_bnx2_hw_idx;
4402         return cdev;
4403
4404 cnic_err:
4405         dev_put(dev);
4406         return NULL;
4407 }
4408
4409 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
4410 {
4411         struct pci_dev *pdev;
4412         struct cnic_dev *cdev;
4413         struct cnic_local *cp;
4414         struct cnic_eth_dev *ethdev = NULL;
4415         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4416
4417         probe = symbol_get(bnx2x_cnic_probe);
4418         if (probe) {
4419                 ethdev = (*probe)(dev);
4420                 symbol_put(bnx2x_cnic_probe);
4421         }
4422         if (!ethdev)
4423                 return NULL;
4424
4425         pdev = ethdev->pdev;
4426         if (!pdev)
4427                 return NULL;
4428
4429         dev_hold(dev);
4430         cdev = cnic_alloc_dev(dev, pdev);
4431         if (cdev == NULL) {
4432                 dev_put(dev);
4433                 return NULL;
4434         }
4435
4436         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
4437         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
4438
4439         cp = cdev->cnic_priv;
4440         cp->ethdev = ethdev;
4441         cdev->pcidev = pdev;
4442
4443         cp->cnic_ops = &cnic_bnx2x_ops;
4444         cp->start_hw = cnic_start_bnx2x_hw;
4445         cp->stop_hw = cnic_stop_bnx2x_hw;
4446         cp->setup_pgtbl = cnic_setup_page_tbl_le;
4447         cp->alloc_resc = cnic_alloc_bnx2x_resc;
4448         cp->free_resc = cnic_free_resc;
4449         cp->start_cm = cnic_cm_init_bnx2x_hw;
4450         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
4451         cp->enable_int = cnic_enable_bnx2x_int;
4452         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
4453         cp->ack_int = cnic_ack_bnx2x_msix;
4454         cp->close_conn = cnic_close_bnx2x_conn;
4455         cp->next_idx = cnic_bnx2x_next_idx;
4456         cp->hw_idx = cnic_bnx2x_hw_idx;
4457         return cdev;
4458 }
4459
4460 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
4461 {
4462         struct ethtool_drvinfo drvinfo;
4463         struct cnic_dev *cdev = NULL;
4464
4465         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
4466                 memset(&drvinfo, 0, sizeof(drvinfo));
4467                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
4468
4469                 if (!strcmp(drvinfo.driver, "bnx2"))
4470                         cdev = init_bnx2_cnic(dev);
4471                 if (!strcmp(drvinfo.driver, "bnx2x"))
4472                         cdev = init_bnx2x_cnic(dev);
4473                 if (cdev) {
4474                         write_lock(&cnic_dev_lock);
4475                         list_add(&cdev->list, &cnic_dev_list);
4476                         write_unlock(&cnic_dev_lock);
4477                 }
4478         }
4479         return cdev;
4480 }
4481
4482 /**
4483  * netdev event handler
4484  */
4485 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
4486                                                          void *ptr)
4487 {
4488         struct net_device *netdev = ptr;
4489         struct cnic_dev *dev;
4490         int if_type;
4491         int new_dev = 0;
4492
4493         dev = cnic_from_netdev(netdev);
4494
4495         if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
4496                 /* Check for the hot-plug device */
4497                 dev = is_cnic_dev(netdev);
4498                 if (dev) {
4499                         new_dev = 1;
4500                         cnic_hold(dev);
4501                 }
4502         }
4503         if (dev) {
4504                 struct cnic_local *cp = dev->cnic_priv;
4505
4506                 if (new_dev)
4507                         cnic_ulp_init(dev);
4508                 else if (event == NETDEV_UNREGISTER)
4509                         cnic_ulp_exit(dev);
4510
4511                 if (event == NETDEV_UP) {
4512                         if (cnic_register_netdev(dev) != 0) {
4513                                 cnic_put(dev);
4514                                 goto done;
4515                         }
4516                         if (!cnic_start_hw(dev))
4517                                 cnic_ulp_start(dev);
4518                 }
4519
4520                 rcu_read_lock();
4521                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
4522                         struct cnic_ulp_ops *ulp_ops;
4523                         void *ctx;
4524
4525                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
4526                         if (!ulp_ops || !ulp_ops->indicate_netevent)
4527                                 continue;
4528
4529                         ctx = cp->ulp_handle[if_type];
4530
4531                         ulp_ops->indicate_netevent(ctx, event);
4532                 }
4533                 rcu_read_unlock();
4534
4535                 if (event == NETDEV_GOING_DOWN) {
4536                         cnic_ulp_stop(dev);
4537                         cnic_stop_hw(dev);
4538                         cnic_unregister_netdev(dev);
4539                 } else if (event == NETDEV_UNREGISTER) {
4540                         write_lock(&cnic_dev_lock);
4541                         list_del_init(&dev->list);
4542                         write_unlock(&cnic_dev_lock);
4543
4544                         cnic_put(dev);
4545                         cnic_free_dev(dev);
4546                         goto done;
4547                 }
4548                 cnic_put(dev);
4549         }
4550 done:
4551         return NOTIFY_DONE;
4552 }
4553
4554 static struct notifier_block cnic_netdev_notifier = {
4555         .notifier_call = cnic_netdev_event
4556 };
4557
4558 static void cnic_release(void)
4559 {
4560         struct cnic_dev *dev;
4561
4562         while (!list_empty(&cnic_dev_list)) {
4563                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
4564                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4565                         cnic_ulp_stop(dev);
4566                         cnic_stop_hw(dev);
4567                 }
4568
4569                 cnic_ulp_exit(dev);
4570                 cnic_unregister_netdev(dev);
4571                 list_del_init(&dev->list);
4572                 cnic_free_dev(dev);
4573         }
4574 }
4575
4576 static int __init cnic_init(void)
4577 {
4578         int rc = 0;
4579
4580         printk(KERN_INFO "%s", version);
4581
4582         rc = register_netdevice_notifier(&cnic_netdev_notifier);
4583         if (rc) {
4584                 cnic_release();
4585                 return rc;
4586         }
4587
4588         return 0;
4589 }
4590
4591 static void __exit cnic_exit(void)
4592 {
4593         unregister_netdevice_notifier(&cnic_netdev_notifier);
4594         cnic_release();
4595         return;
4596 }
4597
4598 module_init(cnic_init);
4599 module_exit(cnic_exit);