drivers/net/cnic.c

   1 /* cnic.c: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2010 Broadcom Corporation
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation.
   8  *
   9  * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
  10  * Modified and maintained by: Michael Chan <mchan@broadcom.com>
  11  */
  12
  13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  14
  15 #include <linux/module.h>
  16
  17 #include <linux/kernel.h>
  18 #include <linux/errno.h>
  19 #include <linux/list.h>
  20 #include <linux/slab.h>
  21 #include <linux/pci.h>
  22 #include <linux/init.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/uio_driver.h>
  25 #include <linux/in.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/delay.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_vlan.h>
  30 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
  31 #define BCM_VLAN 1
  32 #endif
  33 #include <net/ip.h>
  34 #include <net/tcp.h>
  35 #include <net/route.h>
  36 #include <net/ipv6.h>
  37 #include <net/ip6_route.h>
  38 #include <net/ip6_checksum.h>
  39 #include <scsi/iscsi_if.h>
  40
  41 #include "cnic_if.h"
  42 #include "bnx2.h"
  43 #include "bnx2x_reg.h"
  44 #include "bnx2x_fw_defs.h"
  45 #include "bnx2x_hsi.h"
  46 #include "../scsi/bnx2i/57xx_iscsi_constants.h"
  47 #include "../scsi/bnx2i/57xx_iscsi_hsi.h"
  48 #include "cnic.h"
  49 #include "cnic_defs.h"
  50
  51 #define DRV_MODULE_NAME         "cnic"
  52
  53 static char version[] __devinitdata =
  54         "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  55
  56 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  57               "Chen (zongxi@broadcom.com");
  58 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
  59 MODULE_LICENSE("GPL");
  60 MODULE_VERSION(CNIC_MODULE_VERSION);
  61
  62 static LIST_HEAD(cnic_dev_list);
  63 static DEFINE_RWLOCK(cnic_dev_lock);
  64 static DEFINE_MUTEX(cnic_lock);
  65
  66 static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  67
  68 static int cnic_service_bnx2(void *, void *);
  69 static int cnic_service_bnx2x(void *, void *);
  70 static int cnic_ctl(void *, struct cnic_ctl_info *);
  71
  72 static struct cnic_ops cnic_bnx2_ops = {
  73         .cnic_owner     = THIS_MODULE,
  74         .cnic_handler   = cnic_service_bnx2,
  75         .cnic_ctl       = cnic_ctl,
  76 };
  77
  78 static struct cnic_ops cnic_bnx2x_ops = {
  79         .cnic_owner     = THIS_MODULE,
  80         .cnic_handler   = cnic_service_bnx2x,
  81         .cnic_ctl       = cnic_ctl,
  82 };
  83
  84 static void cnic_shutdown_rings(struct cnic_dev *);
  85 static void cnic_init_rings(struct cnic_dev *);
  86 static int cnic_cm_set_pg(struct cnic_sock *);
  87
  88 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
  89 {
  90         struct cnic_dev *dev = uinfo->priv;
  91         struct cnic_local *cp = dev->cnic_priv;
  92
  93         if (!capable(CAP_NET_ADMIN))
  94                 return -EPERM;
  95
  96         if (cp->uio_dev != -1)
  97                 return -EBUSY;
  98
  99         rtnl_lock();
 100         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 101                 rtnl_unlock();
 102                 return -ENODEV;
 103         }
 104
 105         cp->uio_dev = iminor(inode);
 106
 107         cnic_init_rings(dev);
 108         rtnl_unlock();
 109
 110         return 0;
 111 }
 112
 113 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 114 {
 115         struct cnic_dev *dev = uinfo->priv;
 116         struct cnic_local *cp = dev->cnic_priv;
 117
 118         cnic_shutdown_rings(dev);
 119
 120         cp->uio_dev = -1;
 121         return 0;
 122 }
 123
 124 static inline void cnic_hold(struct cnic_dev *dev)
 125 {
 126         atomic_inc(&dev->ref_count);
 127 }
 128
 129 static inline void cnic_put(struct cnic_dev *dev)
 130 {
 131         atomic_dec(&dev->ref_count);
 132 }
 133
 134 static inline void csk_hold(struct cnic_sock *csk)
 135 {
 136         atomic_inc(&csk->ref_count);
 137 }
 138
 139 static inline void csk_put(struct cnic_sock *csk)
 140 {
 141         atomic_dec(&csk->ref_count);
 142 }
 143
 144 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 145 {
 146         struct cnic_dev *cdev;
 147
 148         read_lock(&cnic_dev_lock);
 149         list_for_each_entry(cdev, &cnic_dev_list, list) {
 150                 if (netdev == cdev->netdev) {
 151                         cnic_hold(cdev);
 152                         read_unlock(&cnic_dev_lock);
 153                         return cdev;
 154                 }
 155         }
 156         read_unlock(&cnic_dev_lock);
 157         return NULL;
 158 }
 159
 160 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 161 {
 162         atomic_inc(&ulp_ops->ref_count);
 163 }
 164
 165 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 166 {
 167         atomic_dec(&ulp_ops->ref_count);
 168 }
 169
 170 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 171 {
 172         struct cnic_local *cp = dev->cnic_priv;
 173         struct cnic_eth_dev *ethdev = cp->ethdev;
 174         struct drv_ctl_info info;
 175         struct drv_ctl_io *io = &info.data.io;
 176
 177         info.cmd = DRV_CTL_CTX_WR_CMD;
 178         io->cid_addr = cid_addr;
 179         io->offset = off;
 180         io->data = val;
 181         ethdev->drv_ctl(dev->netdev, &info);
 182 }
 183
 184 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 185 {
 186         struct cnic_local *cp = dev->cnic_priv;
 187         struct cnic_eth_dev *ethdev = cp->ethdev;
 188         struct drv_ctl_info info;
 189         struct drv_ctl_io *io = &info.data.io;
 190
 191         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 192         io->offset = off;
 193         io->dma_addr = addr;
 194         ethdev->drv_ctl(dev->netdev, &info);
 195 }
 196
 197 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 198 {
 199         struct cnic_local *cp = dev->cnic_priv;
 200         struct cnic_eth_dev *ethdev = cp->ethdev;
 201         struct drv_ctl_info info;
 202         struct drv_ctl_l2_ring *ring = &info.data.ring;
 203
 204         if (start)
 205                 info.cmd = DRV_CTL_START_L2_CMD;
 206         else
 207                 info.cmd = DRV_CTL_STOP_L2_CMD;
 208
 209         ring->cid = cid;
 210         ring->client_id = cl_id;
 211         ethdev->drv_ctl(dev->netdev, &info);
 212 }
 213
 214 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 215 {
 216         struct cnic_local *cp = dev->cnic_priv;
 217         struct cnic_eth_dev *ethdev = cp->ethdev;
 218         struct drv_ctl_info info;
 219         struct drv_ctl_io *io = &info.data.io;
 220
 221         info.cmd = DRV_CTL_IO_WR_CMD;
 222         io->offset = off;
 223         io->data = val;
 224         ethdev->drv_ctl(dev->netdev, &info);
 225 }
 226
 227 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 228 {
 229         struct cnic_local *cp = dev->cnic_priv;
 230         struct cnic_eth_dev *ethdev = cp->ethdev;
 231         struct drv_ctl_info info;
 232         struct drv_ctl_io *io = &info.data.io;
 233
 234         info.cmd = DRV_CTL_IO_RD_CMD;
 235         io->offset = off;
 236         ethdev->drv_ctl(dev->netdev, &info);
 237         return io->data;
 238 }
 239
 240 static int cnic_in_use(struct cnic_sock *csk)
 241 {
 242         return test_bit(SK_F_INUSE, &csk->flags);
 243 }
 244
 245 static void cnic_kwq_completion(struct cnic_dev *dev, u32 count)
 246 {
 247         struct cnic_local *cp = dev->cnic_priv;
 248         struct cnic_eth_dev *ethdev = cp->ethdev;
 249         struct drv_ctl_info info;
 250
 251         info.cmd = DRV_CTL_COMPLETION_CMD;
 252         info.data.comp.comp_count = count;
 253         ethdev->drv_ctl(dev->netdev, &info);
 254 }
 255
 256 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 257 {
 258         u32 i;
 259
 260         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
 261                 if (cp->ctx_tbl[i].cid == cid) {
 262                         *l5_cid = i;
 263                         return 0;
 264                 }
 265         }
 266         return -EINVAL;
 267 }
 268
 269 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 270                            struct cnic_sock *csk)
 271 {
 272         struct iscsi_path path_req;
 273         char *buf = NULL;
 274         u16 len = 0;
 275         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 276         struct cnic_ulp_ops *ulp_ops;
 277
 278         if (cp->uio_dev == -1)
 279                 return -ENODEV;
 280
 281         if (csk) {
 282                 len = sizeof(path_req);
 283                 buf = (char *) &path_req;
 284                 memset(&path_req, 0, len);
 285
 286                 msg_type = ISCSI_KEVENT_PATH_REQ;
 287                 path_req.handle = (u64) csk->l5_cid;
 288                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 289                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 290                                sizeof(struct in6_addr));
 291                         path_req.ip_addr_len = 16;
 292                 } else {
 293                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 294                                sizeof(struct in_addr));
 295                         path_req.ip_addr_len = 4;
 296                 }
 297                 path_req.vlan_id = csk->vlan_id;
 298                 path_req.pmtu = csk->mtu;
 299         }
 300
 301         rcu_read_lock();
 302         ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
 303         if (ulp_ops)
 304                 ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len);
 305         rcu_read_unlock();
 306         return 0;
 307 }
 308
 309 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 310                                   char *buf, u16 len)
 311 {
 312         int rc = -EINVAL;
 313
 314         switch (msg_type) {
 315         case ISCSI_UEVENT_PATH_UPDATE: {
 316                 struct cnic_local *cp;
 317                 u32 l5_cid;
 318                 struct cnic_sock *csk;
 319                 struct iscsi_path *path_resp;
 320
 321                 if (len < sizeof(*path_resp))
 322                         break;
 323
 324                 path_resp = (struct iscsi_path *) buf;
 325                 cp = dev->cnic_priv;
 326                 l5_cid = (u32) path_resp->handle;
 327                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 328                         break;
 329
 330                 rcu_read_lock();
 331                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
 332                         rc = -ENODEV;
 333                         rcu_read_unlock();
 334                         break;
 335                 }
 336                 csk = &cp->csk_tbl[l5_cid];
 337                 csk_hold(csk);
 338                 if (cnic_in_use(csk)) {
 339                         memcpy(csk->ha, path_resp->mac_addr, 6);
 340                         if (test_bit(SK_F_IPV6, &csk->flags))
 341                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 342                                        sizeof(struct in6_addr));
 343                         else
 344                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 345                                        sizeof(struct in_addr));
 346                         if (is_valid_ether_addr(csk->ha))
 347                                 cnic_cm_set_pg(csk);
 348                 }
 349                 csk_put(csk);
 350                 rcu_read_unlock();
 351                 rc = 0;
 352         }
 353         }
 354
 355         return rc;
 356 }
 357
 358 static int cnic_offld_prep(struct cnic_sock *csk)
 359 {
 360         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 361                 return 0;
 362
 363         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 364                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 365                 return 0;
 366         }
 367
 368         return 1;
 369 }
 370
 371 static int cnic_close_prep(struct cnic_sock *csk)
 372 {
 373         clear_bit(SK_F_CONNECT_START, &csk->flags);
 374         smp_mb__after_clear_bit();
 375
 376         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 377                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 378                         msleep(1);
 379
 380                 return 1;
 381         }
 382         return 0;
 383 }
 384
 385 static int cnic_abort_prep(struct cnic_sock *csk)
 386 {
 387         clear_bit(SK_F_CONNECT_START, &csk->flags);
 388         smp_mb__after_clear_bit();
 389
 390         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 391                 msleep(1);
 392
 393         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 394                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 395                 return 1;
 396         }
 397
 398         return 0;
 399 }
 400
 401 static void cnic_uio_stop(void)
 402 {
 403         struct cnic_dev *dev;
 404
 405         read_lock(&cnic_dev_lock);
 406         list_for_each_entry(dev, &cnic_dev_list, list) {
 407                 struct cnic_local *cp = dev->cnic_priv;
 408
 409                 if (cp->cnic_uinfo)
 410                         cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 411         }
 412         read_unlock(&cnic_dev_lock);
 413 }
 414
 415 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 416 {
 417         struct cnic_dev *dev;
 418
 419         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 420                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 421                 return -EINVAL;
 422         }
 423         mutex_lock(&cnic_lock);
 424         if (cnic_ulp_tbl[ulp_type]) {
 425                 pr_err("%s: Type %d has already been registered\n",
 426                        __func__, ulp_type);
 427                 mutex_unlock(&cnic_lock);
 428                 return -EBUSY;
 429         }
 430
 431         read_lock(&cnic_dev_lock);
 432         list_for_each_entry(dev, &cnic_dev_list, list) {
 433                 struct cnic_local *cp = dev->cnic_priv;
 434
 435                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 436         }
 437         read_unlock(&cnic_dev_lock);
 438
 439         atomic_set(&ulp_ops->ref_count, 0);
 440         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 441         mutex_unlock(&cnic_lock);
 442
 443         /* Prevent race conditions with netdev_event */
 444         rtnl_lock();
 445         read_lock(&cnic_dev_lock);
 446         list_for_each_entry(dev, &cnic_dev_list, list) {
 447                 struct cnic_local *cp = dev->cnic_priv;
 448
 449                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 450                         ulp_ops->cnic_init(dev);
 451         }
 452         read_unlock(&cnic_dev_lock);
 453         rtnl_unlock();
 454
 455         return 0;
 456 }
 457
 458 int cnic_unregister_driver(int ulp_type)
 459 {
 460         struct cnic_dev *dev;
 461         struct cnic_ulp_ops *ulp_ops;
 462         int i = 0;
 463
 464         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 465                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 466                 return -EINVAL;
 467         }
 468         mutex_lock(&cnic_lock);
 469         ulp_ops = cnic_ulp_tbl[ulp_type];
 470         if (!ulp_ops) {
 471                 pr_err("%s: Type %d has not been registered\n",
 472                        __func__, ulp_type);
 473                 goto out_unlock;
 474         }
 475         read_lock(&cnic_dev_lock);
 476         list_for_each_entry(dev, &cnic_dev_list, list) {
 477                 struct cnic_local *cp = dev->cnic_priv;
 478
 479                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 480                         pr_err("%s: Type %d still has devices registered\n",
 481                                __func__, ulp_type);
 482                         read_unlock(&cnic_dev_lock);
 483                         goto out_unlock;
 484                 }
 485         }
 486         read_unlock(&cnic_dev_lock);
 487
 488         if (ulp_type == CNIC_ULP_ISCSI)
 489                 cnic_uio_stop();
 490
 491         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
 492
 493         mutex_unlock(&cnic_lock);
 494         synchronize_rcu();
 495         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 496                 msleep(100);
 497                 i++;
 498         }
 499
 500         if (atomic_read(&ulp_ops->ref_count) != 0)
 501                 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
 502         return 0;
 503
 504 out_unlock:
 505         mutex_unlock(&cnic_lock);
 506         return -EINVAL;
 507 }
 508
 509 static int cnic_start_hw(struct cnic_dev *);
 510 static void cnic_stop_hw(struct cnic_dev *);
 511
 512 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 513                                 void *ulp_ctx)
 514 {
 515         struct cnic_local *cp = dev->cnic_priv;
 516         struct cnic_ulp_ops *ulp_ops;
 517
 518         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 519                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 520                 return -EINVAL;
 521         }
 522         mutex_lock(&cnic_lock);
 523         if (cnic_ulp_tbl[ulp_type] == NULL) {
 524                 pr_err("%s: Driver with type %d has not been registered\n",
 525                        __func__, ulp_type);
 526                 mutex_unlock(&cnic_lock);
 527                 return -EAGAIN;
 528         }
 529         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 530                 pr_err("%s: Type %d has already been registered to this device\n",
 531                        __func__, ulp_type);
 532                 mutex_unlock(&cnic_lock);
 533                 return -EBUSY;
 534         }
 535
 536         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 537         cp->ulp_handle[ulp_type] = ulp_ctx;
 538         ulp_ops = cnic_ulp_tbl[ulp_type];
 539         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 540         cnic_hold(dev);
 541
 542         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 543                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 544                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 545
 546         mutex_unlock(&cnic_lock);
 547
 548         return 0;
 549
 550 }
 551 EXPORT_SYMBOL(cnic_register_driver);
 552
 553 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 554 {
 555         struct cnic_local *cp = dev->cnic_priv;
 556         int i = 0;
 557
 558         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 559                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 560                 return -EINVAL;
 561         }
 562         mutex_lock(&cnic_lock);
 563         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 564                 rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
 565                 cnic_put(dev);
 566         } else {
 567                 pr_err("%s: device not registered to this ulp type %d\n",
 568                        __func__, ulp_type);
 569                 mutex_unlock(&cnic_lock);
 570                 return -EINVAL;
 571         }
 572         mutex_unlock(&cnic_lock);
 573
 574         synchronize_rcu();
 575
 576         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 577                i < 20) {
 578                 msleep(100);
 579                 i++;
 580         }
 581         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 582                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 583
 584         return 0;
 585 }
 586 EXPORT_SYMBOL(cnic_unregister_driver);
 587
 588 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
 589 {
 590         id_tbl->start = start_id;
 591         id_tbl->max = size;
 592         id_tbl->next = 0;
 593         spin_lock_init(&id_tbl->lock);
 594         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 595         if (!id_tbl->table)
 596                 return -ENOMEM;
 597
 598         return 0;
 599 }
 600
 601 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 602 {
 603         kfree(id_tbl->table);
 604         id_tbl->table = NULL;
 605 }
 606
 607 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 608 {
 609         int ret = -1;
 610
 611         id -= id_tbl->start;
 612         if (id >= id_tbl->max)
 613                 return ret;
 614
 615         spin_lock(&id_tbl->lock);
 616         if (!test_bit(id, id_tbl->table)) {
 617                 set_bit(id, id_tbl->table);
 618                 ret = 0;
 619         }
 620         spin_unlock(&id_tbl->lock);
 621         return ret;
 622 }
 623
 624 /* Returns -1 if not successful */
 625 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 626 {
 627         u32 id;
 628
 629         spin_lock(&id_tbl->lock);
 630         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 631         if (id >= id_tbl->max) {
 632                 id = -1;
 633                 if (id_tbl->next != 0) {
 634                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 635                         if (id >= id_tbl->next)
 636                                 id = -1;
 637                 }
 638         }
 639
 640         if (id < id_tbl->max) {
 641                 set_bit(id, id_tbl->table);
 642                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 643                 id += id_tbl->start;
 644         }
 645
 646         spin_unlock(&id_tbl->lock);
 647
 648         return id;
 649 }
 650
 651 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 652 {
 653         if (id == -1)
 654                 return;
 655
 656         id -= id_tbl->start;
 657         if (id >= id_tbl->max)
 658                 return;
 659
 660         clear_bit(id, id_tbl->table);
 661 }
 662
 663 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 664 {
 665         int i;
 666
 667         if (!dma->pg_arr)
 668                 return;
 669
 670         for (i = 0; i < dma->num_pages; i++) {
 671                 if (dma->pg_arr[i]) {
 672                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
 673                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 674                         dma->pg_arr[i] = NULL;
 675                 }
 676         }
 677         if (dma->pgtbl) {
 678                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 679                                   dma->pgtbl, dma->pgtbl_map);
 680                 dma->pgtbl = NULL;
 681         }
 682         kfree(dma->pg_arr);
 683         dma->pg_arr = NULL;
 684         dma->num_pages = 0;
 685 }
 686
 687 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 688 {
 689         int i;
 690         u32 *page_table = dma->pgtbl;
 691
 692         for (i = 0; i < dma->num_pages; i++) {
 693                 /* Each entry needs to be in big endian format. */
 694                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 695                 page_table++;
 696                 *page_table = (u32) dma->pg_map_arr[i];
 697                 page_table++;
 698         }
 699 }
 700
 701 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 702 {
 703         int i;
 704         u32 *page_table = dma->pgtbl;
 705
 706         for (i = 0; i < dma->num_pages; i++) {
 707                 /* Each entry needs to be in little endian format. */
 708                 *page_table = dma->pg_map_arr[i] & 0xffffffff;
 709                 page_table++;
 710                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 711                 page_table++;
 712         }
 713 }
 714
 715 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 716                           int pages, int use_pg_tbl)
 717 {
 718         int i, size;
 719         struct cnic_local *cp = dev->cnic_priv;
 720
 721         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 722         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 723         if (dma->pg_arr == NULL)
 724                 return -ENOMEM;
 725
 726         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 727         dma->num_pages = pages;
 728
 729         for (i = 0; i < pages; i++) {
 730                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 731                                                     BCM_PAGE_SIZE,
 732                                                     &dma->pg_map_arr[i],
 733                                                     GFP_ATOMIC);
 734                 if (dma->pg_arr[i] == NULL)
 735                         goto error;
 736         }
 737         if (!use_pg_tbl)
 738                 return 0;
 739
 740         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 741                           ~(BCM_PAGE_SIZE - 1);
 742         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 743                                         &dma->pgtbl_map, GFP_ATOMIC);
 744         if (dma->pgtbl == NULL)
 745                 goto error;
 746
 747         cp->setup_pgtbl(dev, dma);
 748
 749         return 0;
 750
 751 error:
 752         cnic_free_dma(dev, dma);
 753         return -ENOMEM;
 754 }
 755
 756 static void cnic_free_context(struct cnic_dev *dev)
 757 {
 758         struct cnic_local *cp = dev->cnic_priv;
 759         int i;
 760
 761         for (i = 0; i < cp->ctx_blks; i++) {
 762                 if (cp->ctx_arr[i].ctx) {
 763                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 764                                           cp->ctx_arr[i].ctx,
 765                                           cp->ctx_arr[i].mapping);
 766                         cp->ctx_arr[i].ctx = NULL;
 767                 }
 768         }
 769 }
 770
 771 static void cnic_free_resc(struct cnic_dev *dev)
 772 {
 773         struct cnic_local *cp = dev->cnic_priv;
 774         int i = 0;
 775
 776         if (cp->cnic_uinfo) {
 777                 while (cp->uio_dev != -1 && i < 15) {
 778                         msleep(100);
 779                         i++;
 780                 }
 781                 uio_unregister_device(cp->cnic_uinfo);
 782                 kfree(cp->cnic_uinfo);
 783                 cp->cnic_uinfo = NULL;
 784         }
 785
 786         if (cp->l2_buf) {
 787                 dma_free_coherent(&dev->pcidev->dev, cp->l2_buf_size,
 788                                   cp->l2_buf, cp->l2_buf_map);
 789                 cp->l2_buf = NULL;
 790         }
 791
 792         if (cp->l2_ring) {
 793                 dma_free_coherent(&dev->pcidev->dev, cp->l2_ring_size,
 794                                   cp->l2_ring, cp->l2_ring_map);
 795                 cp->l2_ring = NULL;
 796         }
 797
 798         cnic_free_context(dev);
 799         kfree(cp->ctx_arr);
 800         cp->ctx_arr = NULL;
 801         cp->ctx_blks = 0;
 802
 803         cnic_free_dma(dev, &cp->gbl_buf_info);
 804         cnic_free_dma(dev, &cp->conn_buf_info);
 805         cnic_free_dma(dev, &cp->kwq_info);
 806         cnic_free_dma(dev, &cp->kwq_16_data_info);
 807         cnic_free_dma(dev, &cp->kcq_info);
 808         kfree(cp->iscsi_tbl);
 809         cp->iscsi_tbl = NULL;
 810         kfree(cp->ctx_tbl);
 811         cp->ctx_tbl = NULL;
 812
 813         cnic_free_id_tbl(&cp->cid_tbl);
 814 }
 815
 816 static int cnic_alloc_context(struct cnic_dev *dev)
 817 {
 818         struct cnic_local *cp = dev->cnic_priv;
 819
 820         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 821                 int i, k, arr_size;
 822
 823                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 824                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 825                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 826                            sizeof(struct cnic_ctx);
 827                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 828                 if (cp->ctx_arr == NULL)
 829                         return -ENOMEM;
 830
 831                 k = 0;
 832                 for (i = 0; i < 2; i++) {
 833                         u32 j, reg, off, lo, hi;
 834
 835                         if (i == 0)
 836                                 off = BNX2_PG_CTX_MAP;
 837                         else
 838                                 off = BNX2_ISCSI_CTX_MAP;
 839
 840                         reg = cnic_reg_rd_ind(dev, off);
 841                         lo = reg >> 16;
 842                         hi = reg & 0xffff;
 843                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 844                                 cp->ctx_arr[k].cid = j;
 845                 }
 846
 847                 cp->ctx_blks = k;
 848                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 849                         cp->ctx_blks = 0;
 850                         return -ENOMEM;
 851                 }
 852
 853                 for (i = 0; i < cp->ctx_blks; i++) {
 854                         cp->ctx_arr[i].ctx =
 855                                 dma_alloc_coherent(&dev->pcidev->dev,
 856                                                    BCM_PAGE_SIZE,
 857                                                    &cp->ctx_arr[i].mapping,
 858                                                    GFP_KERNEL);
 859                         if (cp->ctx_arr[i].ctx == NULL)
 860                                 return -ENOMEM;
 861                 }
 862         }
 863         return 0;
 864 }
 865
 866 static int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages)
 867 {
 868         struct cnic_local *cp = dev->cnic_priv;
 869
 870         cp->l2_ring_size = pages * BCM_PAGE_SIZE;
 871         cp->l2_ring = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_ring_size,
 872                                          &cp->l2_ring_map,
 873                                          GFP_KERNEL | __GFP_COMP);
 874         if (!cp->l2_ring)
 875                 return -ENOMEM;
 876
 877         cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
 878         cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size);
 879         cp->l2_buf = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_buf_size,
 880                                         &cp->l2_buf_map,
 881                                         GFP_KERNEL | __GFP_COMP);
 882         if (!cp->l2_buf)
 883                 return -ENOMEM;
 884
 885         return 0;
 886 }
 887
 888 static int cnic_alloc_uio(struct cnic_dev *dev) {
 889         struct cnic_local *cp = dev->cnic_priv;
 890         struct uio_info *uinfo;
 891         int ret;
 892
 893         uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC);
 894         if (!uinfo)
 895                 return -ENOMEM;
 896
 897         uinfo->mem[0].addr = dev->netdev->base_addr;
 898         uinfo->mem[0].internal_addr = dev->regview;
 899         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
 900         uinfo->mem[0].memtype = UIO_MEM_PHYS;
 901
 902         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
 903                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
 904                         PAGE_MASK;
 905                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
 906                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
 907                 else
 908                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
 909
 910                 uinfo->name = "bnx2_cnic";
 911         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
 912                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
 913                         PAGE_MASK;
 914                 uinfo->mem[1].size = sizeof(struct host_def_status_block);
 915
 916                 uinfo->name = "bnx2x_cnic";
 917         }
 918
 919         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 920
 921         uinfo->mem[2].addr = (unsigned long) cp->l2_ring;
 922         uinfo->mem[2].size = cp->l2_ring_size;
 923         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
 924
 925         uinfo->mem[3].addr = (unsigned long) cp->l2_buf;
 926         uinfo->mem[3].size = cp->l2_buf_size;
 927         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
 928
 929         uinfo->version = CNIC_MODULE_VERSION;
 930         uinfo->irq = UIO_IRQ_CUSTOM;
 931
 932         uinfo->open = cnic_uio_open;
 933         uinfo->release = cnic_uio_close;
 934
 935         uinfo->priv = dev;
 936
 937         ret = uio_register_device(&dev->pcidev->dev, uinfo);
 938         if (ret) {
 939                 kfree(uinfo);
 940                 return ret;
 941         }
 942
 943         cp->cnic_uinfo = uinfo;
 944         return 0;
 945 }
 946
 947 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
 948 {
 949         struct cnic_local *cp = dev->cnic_priv;
 950         int ret;
 951
 952         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
 953         if (ret)
 954                 goto error;
 955         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
 956
 957         ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1);
 958         if (ret)
 959                 goto error;
 960         cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
 961
 962         ret = cnic_alloc_context(dev);
 963         if (ret)
 964                 goto error;
 965
 966         ret = cnic_alloc_l2_rings(dev, 2);
 967         if (ret)
 968                 goto error;
 969
 970         ret = cnic_alloc_uio(dev);
 971         if (ret)
 972                 goto error;
 973
 974         return 0;
 975
 976 error:
 977         cnic_free_resc(dev);
 978         return ret;
 979 }
 980
 981 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
 982 {
 983         struct cnic_local *cp = dev->cnic_priv;
 984         struct cnic_eth_dev *ethdev = cp->ethdev;
 985         int ctx_blk_size = cp->ethdev->ctx_blk_size;
 986         int total_mem, blks, i, cid_space;
 987
 988         if (BNX2X_ISCSI_START_CID < ethdev->starting_cid)
 989                 return -EINVAL;
 990
 991         cid_space = MAX_ISCSI_TBL_SZ +
 992                     (BNX2X_ISCSI_START_CID - ethdev->starting_cid);
 993
 994         total_mem = BNX2X_CONTEXT_MEM_SIZE * cid_space;
 995         blks = total_mem / ctx_blk_size;
 996         if (total_mem % ctx_blk_size)
 997                 blks++;
 998
 999         if (blks > cp->ethdev->ctx_tbl_len)
1000                 return -ENOMEM;
1001
1002         cp->ctx_arr = kzalloc(blks * sizeof(struct cnic_ctx), GFP_KERNEL);
1003         if (cp->ctx_arr == NULL)
1004                 return -ENOMEM;
1005
1006         cp->ctx_blks = blks;
1007         cp->ctx_blk_size = ctx_blk_size;
1008         if (BNX2X_CHIP_IS_E1H(cp->chip_id))
1009                 cp->ctx_align = 0;
1010         else
1011                 cp->ctx_align = ctx_blk_size;
1012
1013         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1014
1015         for (i = 0; i < blks; i++) {
1016                 cp->ctx_arr[i].ctx =
1017                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1018                                            &cp->ctx_arr[i].mapping,
1019                                            GFP_KERNEL);
1020                 if (cp->ctx_arr[i].ctx == NULL)
1021                         return -ENOMEM;
1022
1023                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1024                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1025                                 cnic_free_context(dev);
1026                                 cp->ctx_blk_size += cp->ctx_align;
1027                                 i = -1;
1028                                 continue;
1029                         }
1030                 }
1031         }
1032         return 0;
1033 }
1034
1035 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1036 {
1037         struct cnic_local *cp = dev->cnic_priv;
1038         int i, j, n, ret, pages;
1039         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1040
1041         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1042                                 GFP_KERNEL);
1043         if (!cp->iscsi_tbl)
1044                 goto error;
1045
1046         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1047                                   MAX_CNIC_L5_CONTEXT, GFP_KERNEL);
1048         if (!cp->ctx_tbl)
1049                 goto error;
1050
1051         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1052                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1053                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1054         }
1055
1056         pages = PAGE_ALIGN(MAX_CNIC_L5_CONTEXT * CNIC_KWQ16_DATA_SIZE) /
1057                 PAGE_SIZE;
1058
1059         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1060         if (ret)
1061                 return -ENOMEM;
1062
1063         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1064         for (i = 0, j = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1065                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1066
1067                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1068                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1069                                                    off;
1070
1071                 if ((i % n) == (n - 1))
1072                         j++;
1073         }
1074
1075         ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 0);
1076         if (ret)
1077                 goto error;
1078         cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
1079
1080         for (i = 0; i < KCQ_PAGE_CNT; i++) {
1081                 struct bnx2x_bd_chain_next *next =
1082                         (struct bnx2x_bd_chain_next *)
1083                         &cp->kcq[i][MAX_KCQE_CNT];
1084                 int j = i + 1;
1085
1086                 if (j >= KCQ_PAGE_CNT)
1087                         j = 0;
1088                 next->addr_hi = (u64) cp->kcq_info.pg_map_arr[j] >> 32;
1089                 next->addr_lo = cp->kcq_info.pg_map_arr[j] & 0xffffffff;
1090         }
1091
1092         pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
1093                            BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
1094         ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
1095         if (ret)
1096                 goto error;
1097
1098         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1099         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1100         if (ret)
1101                 goto error;
1102
1103         ret = cnic_alloc_bnx2x_context(dev);
1104         if (ret)
1105                 goto error;
1106
1107         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1108
1109         memset(cp->status_blk.bnx2x, 0, sizeof(*cp->status_blk.bnx2x));
1110
1111         cp->l2_rx_ring_size = 15;
1112
1113         ret = cnic_alloc_l2_rings(dev, 4);
1114         if (ret)
1115                 goto error;
1116
1117         ret = cnic_alloc_uio(dev);
1118         if (ret)
1119                 goto error;
1120
1121         return 0;
1122
1123 error:
1124         cnic_free_resc(dev);
1125         return -ENOMEM;
1126 }
1127
1128 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1129 {
1130         return cp->max_kwq_idx -
1131                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1132 }
1133
1134 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1135                                   u32 num_wqes)
1136 {
1137         struct cnic_local *cp = dev->cnic_priv;
1138         struct kwqe *prod_qe;
1139         u16 prod, sw_prod, i;
1140
1141         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1142                 return -EAGAIN;         /* bnx2 is down */
1143
1144         spin_lock_bh(&cp->cnic_ulp_lock);
1145         if (num_wqes > cnic_kwq_avail(cp) &&
1146             !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) {
1147                 spin_unlock_bh(&cp->cnic_ulp_lock);
1148                 return -EAGAIN;
1149         }
1150
1151         cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT;
1152
1153         prod = cp->kwq_prod_idx;
1154         sw_prod = prod & MAX_KWQ_IDX;
1155         for (i = 0; i < num_wqes; i++) {
1156                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1157                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1158                 prod++;
1159                 sw_prod = prod & MAX_KWQ_IDX;
1160         }
1161         cp->kwq_prod_idx = prod;
1162
1163         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1164
1165         spin_unlock_bh(&cp->cnic_ulp_lock);
1166         return 0;
1167 }
1168
1169 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1170                                    union l5cm_specific_data *l5_data)
1171 {
1172         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1173         dma_addr_t map;
1174
1175         map = ctx->kwqe_data_mapping;
1176         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1177         l5_data->phy_address.hi = (u64) map >> 32;
1178         return ctx->kwqe_data;
1179 }
1180
1181 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1182                                 u32 type, union l5cm_specific_data *l5_data)
1183 {
1184         struct cnic_local *cp = dev->cnic_priv;
1185         struct l5cm_spe kwqe;
1186         struct kwqe_16 *kwq[1];
1187         int ret;
1188
1189         kwqe.hdr.conn_and_cmd_data =
1190                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1191                              BNX2X_HW_CID(cid, cp->func)));
1192         kwqe.hdr.type = cpu_to_le16(type);
1193         kwqe.hdr.reserved = 0;
1194         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1195         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1196
1197         kwq[0] = (struct kwqe_16 *) &kwqe;
1198
1199         spin_lock_bh(&cp->cnic_ulp_lock);
1200         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1201         spin_unlock_bh(&cp->cnic_ulp_lock);
1202
1203         if (ret == 1)
1204                 return 0;
1205
1206         return -EBUSY;
1207 }
1208
1209 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1210                                    struct kcqe *cqes[], u32 num_cqes)
1211 {
1212         struct cnic_local *cp = dev->cnic_priv;
1213         struct cnic_ulp_ops *ulp_ops;
1214
1215         rcu_read_lock();
1216         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1217         if (likely(ulp_ops)) {
1218                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1219                                           cqes, num_cqes);
1220         }
1221         rcu_read_unlock();
1222 }
1223
1224 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1225 {
1226         struct cnic_local *cp = dev->cnic_priv;
1227         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1228         int func = cp->func, pages;
1229         int hq_bds;
1230
1231         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1232         cp->num_ccells = req1->num_ccells_per_conn;
1233         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1234                               cp->num_iscsi_tasks;
1235         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1236                         BNX2X_ISCSI_R2TQE_SIZE;
1237         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1238         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1239         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1240         cp->num_cqs = req1->num_cqs;
1241
1242         if (!dev->max_iscsi_conn)
1243                 return 0;
1244
1245         /* init Tstorm RAM */
1246         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(func),
1247                   req1->rq_num_wqes);
1248         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1249                   PAGE_SIZE);
1250         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1251                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1252         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1253                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1254                   req1->num_tasks_per_conn);
1255
1256         /* init Ustorm RAM */
1257         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1258                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(func),
1259                   req1->rq_buffer_size);
1260         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1261                   PAGE_SIZE);
1262         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1263                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1264         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1265                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1266                   req1->num_tasks_per_conn);
1267         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(func),
1268                   req1->rq_num_wqes);
1269         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(func),
1270                   req1->cq_num_wqes);
1271         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1272                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1273
1274         /* init Xstorm RAM */
1275         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1276                   PAGE_SIZE);
1277         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1278                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1279         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1280                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1281                   req1->num_tasks_per_conn);
1282         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1283                   hq_bds);
1284         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(func),
1285                   req1->num_tasks_per_conn);
1286         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1287                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1288
1289         /* init Cstorm RAM */
1290         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1291                   PAGE_SIZE);
1292         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1293                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1294         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1295                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1296                   req1->num_tasks_per_conn);
1297         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(func),
1298                   req1->cq_num_wqes);
1299         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1300                   hq_bds);
1301
1302         return 0;
1303 }
1304
1305 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1306 {
1307         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1308         struct cnic_local *cp = dev->cnic_priv;
1309         int func = cp->func;
1310         struct iscsi_kcqe kcqe;
1311         struct kcqe *cqes[1];
1312
1313         memset(&kcqe, 0, sizeof(kcqe));
1314         if (!dev->max_iscsi_conn) {
1315                 kcqe.completion_status =
1316                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1317                 goto done;
1318         }
1319
1320         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1321                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1322         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1323                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1324                 req2->error_bit_map[1]);
1325
1326         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1327                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1328         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1329                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1330         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1331                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1332                 req2->error_bit_map[1]);
1333
1334         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1335                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1336
1337         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1338
1339 done:
1340         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1341         cqes[0] = (struct kcqe *) &kcqe;
1342         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1343
1344         return 0;
1345 }
1346
1347 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1348 {
1349         struct cnic_local *cp = dev->cnic_priv;
1350         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1351
1352         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1353                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1354
1355                 cnic_free_dma(dev, &iscsi->hq_info);
1356                 cnic_free_dma(dev, &iscsi->r2tq_info);
1357                 cnic_free_dma(dev, &iscsi->task_array_info);
1358         }
1359         cnic_free_id(&cp->cid_tbl, ctx->cid);
1360         ctx->cid = 0;
1361 }
1362
1363 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1364 {
1365         u32 cid;
1366         int ret, pages;
1367         struct cnic_local *cp = dev->cnic_priv;
1368         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1369         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1370
1371         cid = cnic_alloc_new_id(&cp->cid_tbl);
1372         if (cid == -1) {
1373                 ret = -ENOMEM;
1374                 goto error;
1375         }
1376
1377         ctx->cid = cid;
1378         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1379
1380         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1381         if (ret)
1382                 goto error;
1383
1384         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1385         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1386         if (ret)
1387                 goto error;
1388
1389         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1390         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1391         if (ret)
1392                 goto error;
1393
1394         return 0;
1395
1396 error:
1397         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1398         return ret;
1399 }
1400
1401 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1402                                 struct regpair *ctx_addr)
1403 {
1404         struct cnic_local *cp = dev->cnic_priv;
1405         struct cnic_eth_dev *ethdev = cp->ethdev;
1406         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1407         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1408         unsigned long align_off = 0;
1409         dma_addr_t ctx_map;
1410         void *ctx;
1411
1412         if (cp->ctx_align) {
1413                 unsigned long mask = cp->ctx_align - 1;
1414
1415                 if (cp->ctx_arr[blk].mapping & mask)
1416                         align_off = cp->ctx_align -
1417                                     (cp->ctx_arr[blk].mapping & mask);
1418         }
1419         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1420                 (off * BNX2X_CONTEXT_MEM_SIZE);
1421         ctx = cp->ctx_arr[blk].ctx + align_off +
1422               (off * BNX2X_CONTEXT_MEM_SIZE);
1423         if (init)
1424                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1425
1426         ctx_addr->lo = ctx_map & 0xffffffff;
1427         ctx_addr->hi = (u64) ctx_map >> 32;
1428         return ctx;
1429 }
1430
1431 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1432                                 u32 num)
1433 {
1434         struct cnic_local *cp = dev->cnic_priv;
1435         struct iscsi_kwqe_conn_offload1 *req1 =
1436                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1437         struct iscsi_kwqe_conn_offload2 *req2 =
1438                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1439         struct iscsi_kwqe_conn_offload3 *req3;
1440         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1441         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1442         u32 cid = ctx->cid;
1443         u32 hw_cid = BNX2X_HW_CID(cid, cp->func);
1444         struct iscsi_context *ictx;
1445         struct regpair context_addr;
1446         int i, j, n = 2, n_max;
1447
1448         ctx->ctx_flags = 0;
1449         if (!req2->num_additional_wqes)
1450                 return -EINVAL;
1451
1452         n_max = req2->num_additional_wqes + 2;
1453
1454         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1455         if (ictx == NULL)
1456                 return -ENOMEM;
1457
1458         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1459
1460         ictx->xstorm_ag_context.hq_prod = 1;
1461
1462         ictx->xstorm_st_context.iscsi.first_burst_length =
1463                 ISCSI_DEF_FIRST_BURST_LEN;
1464         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1465                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1466         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1467                 req1->sq_page_table_addr_lo;
1468         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1469                 req1->sq_page_table_addr_hi;
1470         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1471         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1472         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1473                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1474         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1475                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1476         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1477                 iscsi->hq_info.pgtbl[0];
1478         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1479                 iscsi->hq_info.pgtbl[1];
1480         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1481                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1482         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1483                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1484         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1485                 iscsi->r2tq_info.pgtbl[0];
1486         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1487                 iscsi->r2tq_info.pgtbl[1];
1488         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1489                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1490         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1491                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1492         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1493                 BNX2X_ISCSI_PBL_NOT_CACHED;
1494         ictx->xstorm_st_context.iscsi.flags.flags |=
1495                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1496         ictx->xstorm_st_context.iscsi.flags.flags |=
1497                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1498
1499         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1500         /* TSTORM requires the base address of RQ DB & not PTE */
1501         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1502                 req2->rq_page_table_addr_lo & PAGE_MASK;
1503         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1504                 req2->rq_page_table_addr_hi;
1505         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1506         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1507         ictx->tstorm_st_context.tcp.flags2 |=
1508                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1509
1510         ictx->timers_context.flags |= ISCSI_TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1511
1512         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1513                 req2->rq_page_table_addr_lo;
1514         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1515                 req2->rq_page_table_addr_hi;
1516         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1517         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1518         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1519                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1520         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1521                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1522         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1523                 iscsi->r2tq_info.pgtbl[0];
1524         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1525                 iscsi->r2tq_info.pgtbl[1];
1526         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1527                 req1->cq_page_table_addr_lo;
1528         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1529                 req1->cq_page_table_addr_hi;
1530         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1531         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1532         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1533         ictx->ustorm_st_context.task_pbe_cache_index =
1534                 BNX2X_ISCSI_PBL_NOT_CACHED;
1535         ictx->ustorm_st_context.task_pdu_cache_index =
1536                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1537
1538         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1539                 if (j == 3) {
1540                         if (n >= n_max)
1541                                 break;
1542                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1543                         j = 0;
1544                 }
1545                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1546                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1547                         req3->qp_first_pte[j].hi;
1548                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1549                         req3->qp_first_pte[j].lo;
1550         }
1551
1552         ictx->ustorm_st_context.task_pbl_base.lo =
1553                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1554         ictx->ustorm_st_context.task_pbl_base.hi =
1555                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1556         ictx->ustorm_st_context.tce_phy_addr.lo =
1557                 iscsi->task_array_info.pgtbl[0];
1558         ictx->ustorm_st_context.tce_phy_addr.hi =
1559                 iscsi->task_array_info.pgtbl[1];
1560         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1561         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1562         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1563         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1564                 ISCSI_DEF_MAX_BURST_LEN;
1565         ictx->ustorm_st_context.negotiated_rx |=
1566                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1567                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1568
1569         ictx->cstorm_st_context.hq_pbl_base.lo =
1570                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1571         ictx->cstorm_st_context.hq_pbl_base.hi =
1572                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1573         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1574         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1575         ictx->cstorm_st_context.task_pbl_base.lo =
1576                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1577         ictx->cstorm_st_context.task_pbl_base.hi =
1578                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1579         /* CSTORM and USTORM initialization is different, CSTORM requires
1580          * CQ DB base & not PTE addr */
1581         ictx->cstorm_st_context.cq_db_base.lo =
1582                 req1->cq_page_table_addr_lo & PAGE_MASK;
1583         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1584         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1585         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1586         for (i = 0; i < cp->num_cqs; i++) {
1587                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1588                         ISCSI_INITIAL_SN;
1589                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1590                         ISCSI_INITIAL_SN;
1591         }
1592
1593         ictx->xstorm_ag_context.cdu_reserved =
1594                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1595                                        ISCSI_CONNECTION_TYPE);
1596         ictx->ustorm_ag_context.cdu_usage =
1597                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1598                                        ISCSI_CONNECTION_TYPE);
1599         return 0;
1600
1601 }
1602
1603 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1604                                    u32 num, int *work)
1605 {
1606         struct iscsi_kwqe_conn_offload1 *req1;
1607         struct iscsi_kwqe_conn_offload2 *req2;
1608         struct cnic_local *cp = dev->cnic_priv;
1609         struct iscsi_kcqe kcqe;
1610         struct kcqe *cqes[1];
1611         u32 l5_cid;
1612         int ret;
1613
1614         if (num < 2) {
1615                 *work = num;
1616                 return -EINVAL;
1617         }
1618
1619         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1620         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1621         if ((num - 2) < req2->num_additional_wqes) {
1622                 *work = num;
1623                 return -EINVAL;
1624         }
1625         *work = 2 + req2->num_additional_wqes;;
1626
1627         l5_cid = req1->iscsi_conn_id;
1628         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1629                 return -EINVAL;
1630
1631         memset(&kcqe, 0, sizeof(kcqe));
1632         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1633         kcqe.iscsi_conn_id = l5_cid;
1634         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1635
1636         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1637                 atomic_dec(&cp->iscsi_conn);
1638                 ret = 0;
1639                 goto done;
1640         }
1641         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1642         if (ret) {
1643                 atomic_dec(&cp->iscsi_conn);
1644                 ret = 0;
1645                 goto done;
1646         }
1647         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1648         if (ret < 0) {
1649                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1650                 atomic_dec(&cp->iscsi_conn);
1651                 goto done;
1652         }
1653
1654         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1655         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp->ctx_tbl[l5_cid].cid,
1656                                                   cp->func);
1657
1658 done:
1659         cqes[0] = (struct kcqe *) &kcqe;
1660         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1661         return ret;
1662 }
1663
1664
1665 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1666 {
1667         struct cnic_local *cp = dev->cnic_priv;
1668         struct iscsi_kwqe_conn_update *req =
1669                 (struct iscsi_kwqe_conn_update *) kwqe;
1670         void *data;
1671         union l5cm_specific_data l5_data;
1672         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1673         int ret;
1674
1675         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1676                 return -EINVAL;
1677
1678         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1679         if (!data)
1680                 return -ENOMEM;
1681
1682         memcpy(data, kwqe, sizeof(struct kwqe));
1683
1684         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1685                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1686         return ret;
1687 }
1688
1689 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1690 {
1691         struct cnic_local *cp = dev->cnic_priv;
1692         struct iscsi_kwqe_conn_destroy *req =
1693                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1694         union l5cm_specific_data l5_data;
1695         u32 l5_cid = req->reserved0;
1696         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1697         int ret = 0;
1698         struct iscsi_kcqe kcqe;
1699         struct kcqe *cqes[1];
1700
1701         if (!(ctx->ctx_flags & CTX_FL_OFFLD_START))
1702                 goto skip_cfc_delete;
1703
1704         while (!time_after(jiffies, ctx->timestamp + (2 * HZ)))
1705                 msleep(250);
1706
1707         init_waitqueue_head(&ctx->waitq);
1708         ctx->wait_cond = 0;
1709         memset(&l5_data, 0, sizeof(l5_data));
1710         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
1711                                   req->context_id,
1712                                   ETH_CONNECTION_TYPE |
1713                                   (1 << SPE_HDR_COMMON_RAMROD_SHIFT),
1714                                   &l5_data);
1715         if (ret == 0)
1716                 wait_event(ctx->waitq, ctx->wait_cond);
1717
1718 skip_cfc_delete:
1719         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1720
1721         atomic_dec(&cp->iscsi_conn);
1722
1723         memset(&kcqe, 0, sizeof(kcqe));
1724         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1725         kcqe.iscsi_conn_id = l5_cid;
1726         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1727         kcqe.iscsi_conn_context_id = req->context_id;
1728
1729         cqes[0] = (struct kcqe *) &kcqe;
1730         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1731
1732         return ret;
1733 }
1734
1735 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1736                                       struct l4_kwq_connect_req1 *kwqe1,
1737                                       struct l4_kwq_connect_req3 *kwqe3,
1738                                       struct l5cm_active_conn_buffer *conn_buf)
1739 {
1740         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1741         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1742                 &conn_buf->xstorm_conn_buffer;
1743         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1744                 &conn_buf->tstorm_conn_buffer;
1745         struct regpair context_addr;
1746         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1747         struct in6_addr src_ip, dst_ip;
1748         int i;
1749         u32 *addrp;
1750
1751         addrp = (u32 *) &conn_addr->local_ip_addr;
1752         for (i = 0; i < 4; i++, addrp++)
1753                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1754
1755         addrp = (u32 *) &conn_addr->remote_ip_addr;
1756         for (i = 0; i < 4; i++, addrp++)
1757                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1758
1759         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1760
1761         xstorm_buf->context_addr.hi = context_addr.hi;
1762         xstorm_buf->context_addr.lo = context_addr.lo;
1763         xstorm_buf->mss = 0xffff;
1764         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1765         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1766                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1767         xstorm_buf->pseudo_header_checksum =
1768                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1769
1770         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1771                 tstorm_buf->params |=
1772                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1773         if (kwqe3->ka_timeout) {
1774                 tstorm_buf->ka_enable = 1;
1775                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1776                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1777                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1778         }
1779         tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1780         tstorm_buf->snd_buf = kwqe3->snd_buf;
1781         tstorm_buf->max_rt_time = 0xffffffff;
1782 }
1783
1784 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1785 {
1786         struct cnic_local *cp = dev->cnic_priv;
1787         int func = CNIC_FUNC(cp);
1788         u8 *mac = dev->mac_addr;
1789
1790         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1791                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(func), mac[0]);
1792         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1793                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(func), mac[1]);
1794         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1795                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(func), mac[2]);
1796         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1797                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(func), mac[3]);
1798         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1799                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(func), mac[4]);
1800         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1801                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(func), mac[5]);
1802
1803         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1804                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func), mac[5]);
1805         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1806                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1807                  mac[4]);
1808         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1809                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func), mac[3]);
1810         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1811                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1812                  mac[2]);
1813         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1814                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 2,
1815                  mac[1]);
1816         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1817                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 3,
1818                  mac[0]);
1819 }
1820
1821 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1822 {
1823         struct cnic_local *cp = dev->cnic_priv;
1824         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1825         u16 tstorm_flags = 0;
1826
1827         if (tcp_ts) {
1828                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1829                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1830         }
1831
1832         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1833                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), xstorm_flags);
1834
1835         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1836                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), tstorm_flags);
1837 }
1838
1839 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
1840                               u32 num, int *work)
1841 {
1842         struct cnic_local *cp = dev->cnic_priv;
1843         struct l4_kwq_connect_req1 *kwqe1 =
1844                 (struct l4_kwq_connect_req1 *) wqes[0];
1845         struct l4_kwq_connect_req3 *kwqe3;
1846         struct l5cm_active_conn_buffer *conn_buf;
1847         struct l5cm_conn_addr_params *conn_addr;
1848         union l5cm_specific_data l5_data;
1849         u32 l5_cid = kwqe1->pg_cid;
1850         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
1851         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1852         int ret;
1853
1854         if (num < 2) {
1855                 *work = num;
1856                 return -EINVAL;
1857         }
1858
1859         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
1860                 *work = 3;
1861         else
1862                 *work = 2;
1863
1864         if (num < *work) {
1865                 *work = num;
1866                 return -EINVAL;
1867         }
1868
1869         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
1870                 netdev_err(dev->netdev, "conn_buf size too big\n");
1871                 return -ENOMEM;
1872         }
1873         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1874         if (!conn_buf)
1875                 return -ENOMEM;
1876
1877         memset(conn_buf, 0, sizeof(*conn_buf));
1878
1879         conn_addr = &conn_buf->conn_addr_buf;
1880         conn_addr->remote_addr_0 = csk->ha[0];
1881         conn_addr->remote_addr_1 = csk->ha[1];
1882         conn_addr->remote_addr_2 = csk->ha[2];
1883         conn_addr->remote_addr_3 = csk->ha[3];
1884         conn_addr->remote_addr_4 = csk->ha[4];
1885         conn_addr->remote_addr_5 = csk->ha[5];
1886
1887         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
1888                 struct l4_kwq_connect_req2 *kwqe2 =
1889                         (struct l4_kwq_connect_req2 *) wqes[1];
1890
1891                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
1892                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
1893                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
1894
1895                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
1896                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
1897                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
1898                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
1899         }
1900         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
1901
1902         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
1903         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
1904         conn_addr->local_tcp_port = kwqe1->src_port;
1905         conn_addr->remote_tcp_port = kwqe1->dst_port;
1906
1907         conn_addr->pmtu = kwqe3->pmtu;
1908         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
1909
1910         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1911                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->func), csk->vlan_id);
1912
1913         cnic_bnx2x_set_tcp_timestamp(dev,
1914                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
1915
1916         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
1917                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1918         if (!ret)
1919                 ctx->ctx_flags |= CTX_FL_OFFLD_START;
1920
1921         return ret;
1922 }
1923
1924 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
1925 {
1926         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
1927         union l5cm_specific_data l5_data;
1928         int ret;
1929
1930         memset(&l5_data, 0, sizeof(l5_data));
1931         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
1932                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1933         return ret;
1934 }
1935
1936 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
1937 {
1938         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
1939         union l5cm_specific_data l5_data;
1940         int ret;
1941
1942         memset(&l5_data, 0, sizeof(l5_data));
1943         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
1944                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1945         return ret;
1946 }
1947 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1948 {
1949         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
1950         struct l4_kcq kcqe;
1951         struct kcqe *cqes[1];
1952
1953         memset(&kcqe, 0, sizeof(kcqe));
1954         kcqe.pg_host_opaque = req->host_opaque;
1955         kcqe.pg_cid = req->host_opaque;
1956         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
1957         cqes[0] = (struct kcqe *) &kcqe;
1958         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1959         return 0;
1960 }
1961
1962 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1963 {
1964         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
1965         struct l4_kcq kcqe;
1966         struct kcqe *cqes[1];
1967
1968         memset(&kcqe, 0, sizeof(kcqe));
1969         kcqe.pg_host_opaque = req->pg_host_opaque;
1970         kcqe.pg_cid = req->pg_cid;
1971         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
1972         cqes[0] = (struct kcqe *) &kcqe;
1973         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1974         return 0;
1975 }
1976
1977 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1978                                    u32 num_wqes)
1979 {
1980         int i, work, ret;
1981         u32 opcode;
1982         struct kwqe *kwqe;
1983
1984         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1985                 return -EAGAIN;         /* bnx2 is down */
1986
1987         for (i = 0; i < num_wqes; ) {
1988                 kwqe = wqes[i];
1989                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
1990                 work = 1;
1991
1992                 switch (opcode) {
1993                 case ISCSI_KWQE_OPCODE_INIT1:
1994                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
1995                         break;
1996                 case ISCSI_KWQE_OPCODE_INIT2:
1997                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
1998                         break;
1999                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2000                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2001                                                      num_wqes - i, &work);
2002                         break;
2003                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2004                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2005                         break;
2006                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2007                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2008                         break;
2009                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2010                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2011                                                  &work);
2012                         break;
2013                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2014                         ret = cnic_bnx2x_close(dev, kwqe);
2015                         break;
2016                 case L4_KWQE_OPCODE_VALUE_RESET:
2017                         ret = cnic_bnx2x_reset(dev, kwqe);
2018                         break;
2019                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2020                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2021                         break;
2022                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2023                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2024                         break;
2025                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2026                         ret = 0;
2027                         break;
2028                 default:
2029                         ret = 0;
2030                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2031                                    opcode);
2032                         break;
2033                 }
2034                 if (ret < 0)
2035                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2036                                    opcode);
2037                 i += work;
2038         }
2039         return 0;
2040 }
2041
2042 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2043 {
2044         struct cnic_local *cp = dev->cnic_priv;
2045         int i, j;
2046
2047         i = 0;
2048         j = 1;
2049         while (num_cqes) {
2050                 struct cnic_ulp_ops *ulp_ops;
2051                 int ulp_type;
2052                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2053                 u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;
2054
2055                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2056                         cnic_kwq_completion(dev, 1);
2057
2058                 while (j < num_cqes) {
2059                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2060
2061                         if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
2062                                 break;
2063
2064                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2065                                 cnic_kwq_completion(dev, 1);
2066                         j++;
2067                 }
2068
2069                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2070                         ulp_type = CNIC_ULP_RDMA;
2071                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2072                         ulp_type = CNIC_ULP_ISCSI;
2073                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2074                         ulp_type = CNIC_ULP_L4;
2075                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2076                         goto end;
2077                 else {
2078                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2079                                    kcqe_op_flag);
2080                         goto end;
2081                 }
2082
2083                 rcu_read_lock();
2084                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2085                 if (likely(ulp_ops)) {
2086                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2087                                                   cp->completed_kcq + i, j);
2088                 }
2089                 rcu_read_unlock();
2090 end:
2091                 num_cqes -= j;
2092                 i += j;
2093                 j = 1;
2094         }
2095         return;
2096 }
2097
2098 static u16 cnic_bnx2_next_idx(u16 idx)
2099 {
2100         return idx + 1;
2101 }
2102
2103 static u16 cnic_bnx2_hw_idx(u16 idx)
2104 {
2105         return idx;
2106 }
2107
2108 static u16 cnic_bnx2x_next_idx(u16 idx)
2109 {
2110         idx++;
2111         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2112                 idx++;
2113
2114         return idx;
2115 }
2116
2117 static u16 cnic_bnx2x_hw_idx(u16 idx)
2118 {
2119         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2120                 idx++;
2121         return idx;
2122 }
2123
2124 static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
2125 {
2126         struct cnic_local *cp = dev->cnic_priv;
2127         u16 i, ri, last;
2128         struct kcqe *kcqe;
2129         int kcqe_cnt = 0, last_cnt = 0;
2130
2131         i = ri = last = *sw_prod;
2132         ri &= MAX_KCQ_IDX;
2133
2134         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2135                 kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2136                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2137                 i = cp->next_idx(i);
2138                 ri = i & MAX_KCQ_IDX;
2139                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2140                         last_cnt = kcqe_cnt;
2141                         last = i;
2142                 }
2143         }
2144
2145         *sw_prod = last;
2146         return last_cnt;
2147 }
2148
2149 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2150 {
2151         u16 rx_cons = *cp->rx_cons_ptr;
2152         u16 tx_cons = *cp->tx_cons_ptr;
2153
2154         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2155                 cp->tx_cons = tx_cons;
2156                 cp->rx_cons = rx_cons;
2157
2158                 uio_event_notify(cp->cnic_uinfo);
2159         }
2160 }
2161
2162 static int cnic_service_bnx2(void *data, void *status_blk)
2163 {
2164         struct cnic_dev *dev = data;
2165         struct status_block *sblk = status_blk;
2166         struct cnic_local *cp = dev->cnic_priv;
2167         u32 status_idx = sblk->status_idx;
2168         u16 hw_prod, sw_prod;
2169         int kcqe_cnt;
2170
2171         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2172                 return status_idx;
2173
2174         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2175
2176         hw_prod = sblk->status_completion_producer_index;
2177         sw_prod = cp->kcq_prod_idx;
2178         while (sw_prod != hw_prod) {
2179                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2180                 if (kcqe_cnt == 0)
2181                         goto done;
2182
2183                 service_kcqes(dev, kcqe_cnt);
2184
2185                 /* Tell compiler that status_blk fields can change. */
2186                 barrier();
2187                 if (status_idx != sblk->status_idx) {
2188                         status_idx = sblk->status_idx;
2189                         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2190                         hw_prod = sblk->status_completion_producer_index;
2191                 } else
2192                         break;
2193         }
2194
2195 done:
2196         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2197
2198         cp->kcq_prod_idx = sw_prod;
2199
2200         cnic_chk_pkt_rings(cp);
2201         return status_idx;
2202 }
2203
2204 static void cnic_service_bnx2_msix(unsigned long data)
2205 {
2206         struct cnic_dev *dev = (struct cnic_dev *) data;
2207         struct cnic_local *cp = dev->cnic_priv;
2208         struct status_block_msix *status_blk = cp->status_blk.bnx2;
2209         u32 status_idx = status_blk->status_idx;
2210         u16 hw_prod, sw_prod;
2211         int kcqe_cnt;
2212
2213         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2214
2215         hw_prod = status_blk->status_completion_producer_index;
2216         sw_prod = cp->kcq_prod_idx;
2217         while (sw_prod != hw_prod) {
2218                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2219                 if (kcqe_cnt == 0)
2220                         goto done;
2221
2222                 service_kcqes(dev, kcqe_cnt);
2223
2224                 /* Tell compiler that status_blk fields can change. */
2225                 barrier();
2226                 if (status_idx != status_blk->status_idx) {
2227                         status_idx = status_blk->status_idx;
2228                         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2229                         hw_prod = status_blk->status_completion_producer_index;
2230                 } else
2231                         break;
2232         }
2233
2234 done:
2235         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2236         cp->kcq_prod_idx = sw_prod;
2237
2238         cnic_chk_pkt_rings(cp);
2239
2240         cp->last_status_idx = status_idx;
2241         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2242                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2243 }
2244
2245 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2246 {
2247         struct cnic_dev *dev = dev_instance;
2248         struct cnic_local *cp = dev->cnic_priv;
2249         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2250
2251         if (cp->ack_int)
2252                 cp->ack_int(dev);
2253
2254         prefetch(cp->status_blk.gen);
2255         prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2256
2257         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2258                 tasklet_schedule(&cp->cnic_irq_task);
2259
2260         return IRQ_HANDLED;
2261 }
2262
2263 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2264                                       u16 index, u8 op, u8 update)
2265 {
2266         struct cnic_local *cp = dev->cnic_priv;
2267         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2268                        COMMAND_REG_INT_ACK);
2269         struct igu_ack_register igu_ack;
2270
2271         igu_ack.status_block_index = index;
2272         igu_ack.sb_id_and_flags =
2273                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2274                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2275                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2276                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2277
2278         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2279 }
2280
2281 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2282 {
2283         struct cnic_local *cp = dev->cnic_priv;
2284
2285         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID, 0,
2286                            IGU_INT_DISABLE, 0);
2287 }
2288
2289 static void cnic_service_bnx2x_bh(unsigned long data)
2290 {
2291         struct cnic_dev *dev = (struct cnic_dev *) data;
2292         struct cnic_local *cp = dev->cnic_priv;
2293         u16 hw_prod, sw_prod;
2294         struct cstorm_status_block_c *sblk =
2295                 &cp->status_blk.bnx2x->c_status_block;
2296         u32 status_idx = sblk->status_block_index;
2297         int kcqe_cnt;
2298
2299         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2300                 return;
2301
2302         hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2303         hw_prod = cp->hw_idx(hw_prod);
2304         sw_prod = cp->kcq_prod_idx;
2305         while (sw_prod != hw_prod) {
2306                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2307                 if (kcqe_cnt == 0)
2308                         goto done;
2309
2310                 service_kcqes(dev, kcqe_cnt);
2311
2312                 /* Tell compiler that sblk fields can change. */
2313                 barrier();
2314                 if (status_idx == sblk->status_block_index)
2315                         break;
2316
2317                 status_idx = sblk->status_block_index;
2318                 hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2319                 hw_prod = cp->hw_idx(hw_prod);
2320         }
2321
2322 done:
2323         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod + MAX_KCQ_IDX);
2324         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID,
2325                            status_idx, IGU_INT_ENABLE, 1);
2326
2327         cp->kcq_prod_idx = sw_prod;
2328         return;
2329 }
2330
2331 static int cnic_service_bnx2x(void *data, void *status_blk)
2332 {
2333         struct cnic_dev *dev = data;
2334         struct cnic_local *cp = dev->cnic_priv;
2335         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2336
2337         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2338                 prefetch(cp->status_blk.bnx2x);
2339                 prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2340
2341                 tasklet_schedule(&cp->cnic_irq_task);
2342                 cnic_chk_pkt_rings(cp);
2343         }
2344
2345         return 0;
2346 }
2347
2348 static void cnic_ulp_stop(struct cnic_dev *dev)
2349 {
2350         struct cnic_local *cp = dev->cnic_priv;
2351         int if_type;
2352
2353         if (cp->cnic_uinfo)
2354                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2355
2356         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2357                 struct cnic_ulp_ops *ulp_ops;
2358
2359                 mutex_lock(&cnic_lock);
2360                 ulp_ops = cp->ulp_ops[if_type];
2361                 if (!ulp_ops) {
2362                         mutex_unlock(&cnic_lock);
2363                         continue;
2364                 }
2365                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2366                 mutex_unlock(&cnic_lock);
2367
2368                 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2369                         ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2370
2371                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2372         }
2373 }
2374
2375 static void cnic_ulp_start(struct cnic_dev *dev)
2376 {
2377         struct cnic_local *cp = dev->cnic_priv;
2378         int if_type;
2379
2380         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2381                 struct cnic_ulp_ops *ulp_ops;
2382
2383                 mutex_lock(&cnic_lock);
2384                 ulp_ops = cp->ulp_ops[if_type];
2385                 if (!ulp_ops || !ulp_ops->cnic_start) {
2386                         mutex_unlock(&cnic_lock);
2387                         continue;
2388                 }
2389                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2390                 mutex_unlock(&cnic_lock);
2391
2392                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2393                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2394
2395                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2396         }
2397 }
2398
2399 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
2400 {
2401         struct cnic_dev *dev = data;
2402
2403         switch (info->cmd) {
2404         case CNIC_CTL_STOP_CMD:
2405                 cnic_hold(dev);
2406
2407                 cnic_ulp_stop(dev);
2408                 cnic_stop_hw(dev);
2409
2410                 cnic_put(dev);
2411                 break;
2412         case CNIC_CTL_START_CMD:
2413                 cnic_hold(dev);
2414
2415                 if (!cnic_start_hw(dev))
2416                         cnic_ulp_start(dev);
2417
2418                 cnic_put(dev);
2419                 break;
2420         case CNIC_CTL_COMPLETION_CMD: {
2421                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
2422                 u32 l5_cid;
2423                 struct cnic_local *cp = dev->cnic_priv;
2424
2425                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
2426                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2427
2428                         ctx->wait_cond = 1;
2429                         wake_up(&ctx->waitq);
2430                 }
2431                 break;
2432         }
2433         default:
2434                 return -EINVAL;
2435         }
2436         return 0;
2437 }
2438
2439 static void cnic_ulp_init(struct cnic_dev *dev)
2440 {
2441         int i;
2442         struct cnic_local *cp = dev->cnic_priv;
2443
2444         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2445                 struct cnic_ulp_ops *ulp_ops;
2446
2447                 mutex_lock(&cnic_lock);
2448                 ulp_ops = cnic_ulp_tbl[i];
2449                 if (!ulp_ops || !ulp_ops->cnic_init) {
2450                         mutex_unlock(&cnic_lock);
2451                         continue;
2452                 }
2453                 ulp_get(ulp_ops);
2454                 mutex_unlock(&cnic_lock);
2455
2456                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2457                         ulp_ops->cnic_init(dev);
2458
2459                 ulp_put(ulp_ops);
2460         }
2461 }
2462
2463 static void cnic_ulp_exit(struct cnic_dev *dev)
2464 {
2465         int i;
2466         struct cnic_local *cp = dev->cnic_priv;
2467
2468         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2469                 struct cnic_ulp_ops *ulp_ops;
2470
2471                 mutex_lock(&cnic_lock);
2472                 ulp_ops = cnic_ulp_tbl[i];
2473                 if (!ulp_ops || !ulp_ops->cnic_exit) {
2474                         mutex_unlock(&cnic_lock);
2475                         continue;
2476                 }
2477                 ulp_get(ulp_ops);
2478                 mutex_unlock(&cnic_lock);
2479
2480                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2481                         ulp_ops->cnic_exit(dev);
2482
2483                 ulp_put(ulp_ops);
2484         }
2485 }
2486
2487 static int cnic_cm_offload_pg(struct cnic_sock *csk)
2488 {
2489         struct cnic_dev *dev = csk->dev;
2490         struct l4_kwq_offload_pg *l4kwqe;
2491         struct kwqe *wqes[1];
2492
2493         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
2494         memset(l4kwqe, 0, sizeof(*l4kwqe));
2495         wqes[0] = (struct kwqe *) l4kwqe;
2496
2497         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
2498         l4kwqe->flags =
2499                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
2500         l4kwqe->l2hdr_nbytes = ETH_HLEN;
2501
2502         l4kwqe->da0 = csk->ha[0];
2503         l4kwqe->da1 = csk->ha[1];
2504         l4kwqe->da2 = csk->ha[2];
2505         l4kwqe->da3 = csk->ha[3];
2506         l4kwqe->da4 = csk->ha[4];
2507         l4kwqe->da5 = csk->ha[5];
2508
2509         l4kwqe->sa0 = dev->mac_addr[0];
2510         l4kwqe->sa1 = dev->mac_addr[1];
2511         l4kwqe->sa2 = dev->mac_addr[2];
2512         l4kwqe->sa3 = dev->mac_addr[3];
2513         l4kwqe->sa4 = dev->mac_addr[4];
2514         l4kwqe->sa5 = dev->mac_addr[5];
2515
2516         l4kwqe->etype = ETH_P_IP;
2517         l4kwqe->ipid_start = DEF_IPID_START;
2518         l4kwqe->host_opaque = csk->l5_cid;
2519
2520         if (csk->vlan_id) {
2521                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
2522                 l4kwqe->vlan_tag = csk->vlan_id;
2523                 l4kwqe->l2hdr_nbytes += 4;
2524         }
2525
2526         return dev->submit_kwqes(dev, wqes, 1);
2527 }
2528
2529 static int cnic_cm_update_pg(struct cnic_sock *csk)
2530 {
2531         struct cnic_dev *dev = csk->dev;
2532         struct l4_kwq_update_pg *l4kwqe;
2533         struct kwqe *wqes[1];
2534
2535         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
2536         memset(l4kwqe, 0, sizeof(*l4kwqe));
2537         wqes[0] = (struct kwqe *) l4kwqe;
2538
2539         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
2540         l4kwqe->flags =
2541                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
2542         l4kwqe->pg_cid = csk->pg_cid;
2543
2544         l4kwqe->da0 = csk->ha[0];
2545         l4kwqe->da1 = csk->ha[1];
2546         l4kwqe->da2 = csk->ha[2];
2547         l4kwqe->da3 = csk->ha[3];
2548         l4kwqe->da4 = csk->ha[4];
2549         l4kwqe->da5 = csk->ha[5];
2550
2551         l4kwqe->pg_host_opaque = csk->l5_cid;
2552         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
2553
2554         return dev->submit_kwqes(dev, wqes, 1);
2555 }
2556
2557 static int cnic_cm_upload_pg(struct cnic_sock *csk)
2558 {
2559         struct cnic_dev *dev = csk->dev;
2560         struct l4_kwq_upload *l4kwqe;
2561         struct kwqe *wqes[1];
2562
2563         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
2564         memset(l4kwqe, 0, sizeof(*l4kwqe));
2565         wqes[0] = (struct kwqe *) l4kwqe;
2566
2567         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
2568         l4kwqe->flags =
2569                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
2570         l4kwqe->cid = csk->pg_cid;
2571
2572         return dev->submit_kwqes(dev, wqes, 1);
2573 }
2574
2575 static int cnic_cm_conn_req(struct cnic_sock *csk)
2576 {
2577         struct cnic_dev *dev = csk->dev;
2578         struct l4_kwq_connect_req1 *l4kwqe1;
2579         struct l4_kwq_connect_req2 *l4kwqe2;
2580         struct l4_kwq_connect_req3 *l4kwqe3;
2581         struct kwqe *wqes[3];
2582         u8 tcp_flags = 0;
2583         int num_wqes = 2;
2584
2585         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
2586         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
2587         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
2588         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
2589         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
2590         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
2591
2592         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
2593         l4kwqe3->flags =
2594                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
2595         l4kwqe3->ka_timeout = csk->ka_timeout;
2596         l4kwqe3->ka_interval = csk->ka_interval;
2597         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
2598         l4kwqe3->tos = csk->tos;
2599         l4kwqe3->ttl = csk->ttl;
2600         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
2601         l4kwqe3->pmtu = csk->mtu;
2602         l4kwqe3->rcv_buf = csk->rcv_buf;
2603         l4kwqe3->snd_buf = csk->snd_buf;
2604         l4kwqe3->seed = csk->seed;
2605
2606         wqes[0] = (struct kwqe *) l4kwqe1;
2607         if (test_bit(SK_F_IPV6, &csk->flags)) {
2608                 wqes[1] = (struct kwqe *) l4kwqe2;
2609                 wqes[2] = (struct kwqe *) l4kwqe3;
2610                 num_wqes = 3;
2611
2612                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
2613                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
2614                 l4kwqe2->flags =
2615                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
2616                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
2617                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
2618                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
2619                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
2620                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
2621                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
2622                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
2623                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
2624                                sizeof(struct tcphdr);
2625         } else {
2626                 wqes[1] = (struct kwqe *) l4kwqe3;
2627                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
2628                                sizeof(struct tcphdr);
2629         }
2630
2631         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
2632         l4kwqe1->flags =
2633                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
2634                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
2635         l4kwqe1->cid = csk->cid;
2636         l4kwqe1->pg_cid = csk->pg_cid;
2637         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
2638         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
2639         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
2640         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
2641         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
2642                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
2643         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
2644                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
2645         if (csk->tcp_flags & SK_TCP_NAGLE)
2646                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
2647         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
2648                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
2649         if (csk->tcp_flags & SK_TCP_SACK)
2650                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
2651         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
2652                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
2653
2654         l4kwqe1->tcp_flags = tcp_flags;
2655
2656         return dev->submit_kwqes(dev, wqes, num_wqes);
2657 }
2658
2659 static int cnic_cm_close_req(struct cnic_sock *csk)
2660 {
2661         struct cnic_dev *dev = csk->dev;
2662         struct l4_kwq_close_req *l4kwqe;
2663         struct kwqe *wqes[1];
2664
2665         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
2666         memset(l4kwqe, 0, sizeof(*l4kwqe));
2667         wqes[0] = (struct kwqe *) l4kwqe;
2668
2669         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
2670         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
2671         l4kwqe->cid = csk->cid;
2672
2673         return dev->submit_kwqes(dev, wqes, 1);
2674 }
2675
2676 static int cnic_cm_abort_req(struct cnic_sock *csk)
2677 {
2678         struct cnic_dev *dev = csk->dev;
2679         struct l4_kwq_reset_req *l4kwqe;
2680         struct kwqe *wqes[1];
2681
2682         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
2683         memset(l4kwqe, 0, sizeof(*l4kwqe));
2684         wqes[0] = (struct kwqe *) l4kwqe;
2685
2686         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
2687         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
2688         l4kwqe->cid = csk->cid;
2689
2690         return dev->submit_kwqes(dev, wqes, 1);
2691 }
2692
2693 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
2694                           u32 l5_cid, struct cnic_sock **csk, void *context)
2695 {
2696         struct cnic_local *cp = dev->cnic_priv;
2697         struct cnic_sock *csk1;
2698
2699         if (l5_cid >= MAX_CM_SK_TBL_SZ)
2700                 return -EINVAL;
2701
2702         csk1 = &cp->csk_tbl[l5_cid];
2703         if (atomic_read(&csk1->ref_count))
2704                 return -EAGAIN;
2705
2706         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
2707                 return -EBUSY;
2708
2709         csk1->dev = dev;
2710         csk1->cid = cid;
2711         csk1->l5_cid = l5_cid;
2712         csk1->ulp_type = ulp_type;
2713         csk1->context = context;
2714
2715         csk1->ka_timeout = DEF_KA_TIMEOUT;
2716         csk1->ka_interval = DEF_KA_INTERVAL;
2717         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
2718         csk1->tos = DEF_TOS;
2719         csk1->ttl = DEF_TTL;
2720         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
2721         csk1->rcv_buf = DEF_RCV_BUF;
2722         csk1->snd_buf = DEF_SND_BUF;
2723         csk1->seed = DEF_SEED;
2724
2725         *csk = csk1;
2726         return 0;
2727 }
2728
2729 static void cnic_cm_cleanup(struct cnic_sock *csk)
2730 {
2731         if (csk->src_port) {
2732                 struct cnic_dev *dev = csk->dev;
2733                 struct cnic_local *cp = dev->cnic_priv;
2734
2735                 cnic_free_id(&cp->csk_port_tbl, csk->src_port);
2736                 csk->src_port = 0;
2737         }
2738 }
2739
2740 static void cnic_close_conn(struct cnic_sock *csk)
2741 {
2742         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
2743                 cnic_cm_upload_pg(csk);
2744                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
2745         }
2746         cnic_cm_cleanup(csk);
2747 }
2748
2749 static int cnic_cm_destroy(struct cnic_sock *csk)
2750 {
2751         if (!cnic_in_use(csk))
2752                 return -EINVAL;
2753
2754         csk_hold(csk);
2755         clear_bit(SK_F_INUSE, &csk->flags);
2756         smp_mb__after_clear_bit();
2757         while (atomic_read(&csk->ref_count) != 1)
2758                 msleep(1);
2759         cnic_cm_cleanup(csk);
2760
2761         csk->flags = 0;
2762         csk_put(csk);
2763         return 0;
2764 }
2765
2766 static inline u16 cnic_get_vlan(struct net_device *dev,
2767                                 struct net_device **vlan_dev)
2768 {
2769         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2770                 *vlan_dev = vlan_dev_real_dev(dev);
2771                 return vlan_dev_vlan_id(dev);
2772         }
2773         *vlan_dev = dev;
2774         return 0;
2775 }
2776
2777 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
2778                              struct dst_entry **dst)
2779 {
2780 #if defined(CONFIG_INET)
2781         struct flowi fl;
2782         int err;
2783         struct rtable *rt;
2784
2785         memset(&fl, 0, sizeof(fl));
2786         fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
2787
2788         err = ip_route_output_key(&init_net, &rt, &fl);
2789         if (!err)
2790                 *dst = &rt->u.dst;
2791         return err;
2792 #else
2793         return -ENETUNREACH;
2794 #endif
2795 }
2796
2797 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
2798                              struct dst_entry **dst)
2799 {
2800 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2801         struct flowi fl;
2802
2803         memset(&fl, 0, sizeof(fl));
2804         ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
2805         if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
2806                 fl.oif = dst_addr->sin6_scope_id;
2807
2808         *dst = ip6_route_output(&init_net, NULL, &fl);
2809         if (*dst)
2810                 return 0;
2811 #endif
2812
2813         return -ENETUNREACH;
2814 }
2815
2816 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
2817                                            int ulp_type)
2818 {
2819         struct cnic_dev *dev = NULL;
2820         struct dst_entry *dst;
2821         struct net_device *netdev = NULL;
2822         int err = -ENETUNREACH;
2823
2824         if (dst_addr->sin_family == AF_INET)
2825                 err = cnic_get_v4_route(dst_addr, &dst);
2826         else if (dst_addr->sin_family == AF_INET6) {
2827                 struct sockaddr_in6 *dst_addr6 =
2828                         (struct sockaddr_in6 *) dst_addr;
2829
2830                 err = cnic_get_v6_route(dst_addr6, &dst);
2831         } else
2832                 return NULL;
2833
2834         if (err)
2835                 return NULL;
2836
2837         if (!dst->dev)
2838                 goto done;
2839
2840         cnic_get_vlan(dst->dev, &netdev);
2841
2842         dev = cnic_from_netdev(netdev);
2843
2844 done:
2845         dst_release(dst);
2846         if (dev)
2847                 cnic_put(dev);
2848         return dev;
2849 }
2850
2851 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2852 {
2853         struct cnic_dev *dev = csk->dev;
2854         struct cnic_local *cp = dev->cnic_priv;
2855
2856         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
2857 }
2858
2859 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2860 {
2861         struct cnic_dev *dev = csk->dev;
2862         struct cnic_local *cp = dev->cnic_priv;
2863         int is_v6, rc = 0;
2864         struct dst_entry *dst = NULL;
2865         struct net_device *realdev;
2866         u32 local_port;
2867
2868         if (saddr->local.v6.sin6_family == AF_INET6 &&
2869             saddr->remote.v6.sin6_family == AF_INET6)
2870                 is_v6 = 1;
2871         else if (saddr->local.v4.sin_family == AF_INET &&
2872                  saddr->remote.v4.sin_family == AF_INET)
2873                 is_v6 = 0;
2874         else
2875                 return -EINVAL;
2876
2877         clear_bit(SK_F_IPV6, &csk->flags);
2878
2879         if (is_v6) {
2880                 set_bit(SK_F_IPV6, &csk->flags);
2881                 cnic_get_v6_route(&saddr->remote.v6, &dst);
2882
2883                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
2884                        sizeof(struct in6_addr));
2885                 csk->dst_port = saddr->remote.v6.sin6_port;
2886                 local_port = saddr->local.v6.sin6_port;
2887
2888         } else {
2889                 cnic_get_v4_route(&saddr->remote.v4, &dst);
2890
2891                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
2892                 csk->dst_port = saddr->remote.v4.sin_port;
2893                 local_port = saddr->local.v4.sin_port;
2894         }
2895
2896         csk->vlan_id = 0;
2897         csk->mtu = dev->netdev->mtu;
2898         if (dst && dst->dev) {
2899                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
2900                 if (realdev == dev->netdev) {
2901                         csk->vlan_id = vlan;
2902                         csk->mtu = dst_mtu(dst);
2903                 }
2904         }
2905
2906         if (local_port >= CNIC_LOCAL_PORT_MIN &&
2907             local_port < CNIC_LOCAL_PORT_MAX) {
2908                 if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
2909                         local_port = 0;
2910         } else
2911                 local_port = 0;
2912
2913         if (!local_port) {
2914                 local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
2915                 if (local_port == -1) {
2916                         rc = -ENOMEM;
2917                         goto err_out;
2918                 }
2919         }
2920         csk->src_port = local_port;
2921
2922 err_out:
2923         dst_release(dst);
2924         return rc;
2925 }
2926
2927 static void cnic_init_csk_state(struct cnic_sock *csk)
2928 {
2929         csk->state = 0;
2930         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
2931         clear_bit(SK_F_CLOSING, &csk->flags);
2932 }
2933
2934 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2935 {
2936         int err = 0;
2937
2938         if (!cnic_in_use(csk))
2939                 return -EINVAL;
2940
2941         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
2942                 return -EINVAL;
2943
2944         cnic_init_csk_state(csk);
2945
2946         err = cnic_get_route(csk, saddr);
2947         if (err)
2948                 goto err_out;
2949
2950         err = cnic_resolve_addr(csk, saddr);
2951         if (!err)
2952                 return 0;
2953
2954 err_out:
2955         clear_bit(SK_F_CONNECT_START, &csk->flags);
2956         return err;
2957 }
2958
2959 static int cnic_cm_abort(struct cnic_sock *csk)
2960 {
2961         struct cnic_local *cp = csk->dev->cnic_priv;
2962         u32 opcode;
2963
2964         if (!cnic_in_use(csk))
2965                 return -EINVAL;
2966
2967         if (cnic_abort_prep(csk))
2968                 return cnic_cm_abort_req(csk);
2969
2970         /* Getting here means that we haven't started connect, or
2971          * connect was not successful.
2972          */
2973
2974         csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2975         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
2976                 opcode = csk->state;
2977         else
2978                 opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
2979         cp->close_conn(csk, opcode);
2980
2981         return 0;
2982 }
2983
2984 static int cnic_cm_close(struct cnic_sock *csk)
2985 {
2986         if (!cnic_in_use(csk))
2987                 return -EINVAL;
2988
2989         if (cnic_close_prep(csk)) {
2990                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2991                 return cnic_cm_close_req(csk);
2992         }
2993         return 0;
2994 }
2995
2996 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
2997                            u8 opcode)
2998 {
2999         struct cnic_ulp_ops *ulp_ops;
3000         int ulp_type = csk->ulp_type;
3001
3002         rcu_read_lock();
3003         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3004         if (ulp_ops) {
3005                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3006                         ulp_ops->cm_connect_complete(csk);
3007                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3008                         ulp_ops->cm_close_complete(csk);
3009                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3010                         ulp_ops->cm_remote_abort(csk);
3011                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3012                         ulp_ops->cm_abort_complete(csk);
3013                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3014                         ulp_ops->cm_remote_close(csk);
3015         }
3016         rcu_read_unlock();
3017 }
3018
3019 static int cnic_cm_set_pg(struct cnic_sock *csk)
3020 {
3021         if (cnic_offld_prep(csk)) {
3022                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3023                         cnic_cm_update_pg(csk);
3024                 else
3025                         cnic_cm_offload_pg(csk);
3026         }
3027         return 0;
3028 }
3029
3030 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3031 {
3032         struct cnic_local *cp = dev->cnic_priv;
3033         u32 l5_cid = kcqe->pg_host_opaque;
3034         u8 opcode = kcqe->op_code;
3035         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3036
3037         csk_hold(csk);
3038         if (!cnic_in_use(csk))
3039                 goto done;
3040
3041         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3042                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3043                 goto done;
3044         }
3045         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3046         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3047                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3048                 cnic_cm_upcall(cp, csk,
3049                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3050                 goto done;
3051         }
3052
3053         csk->pg_cid = kcqe->pg_cid;
3054         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3055         cnic_cm_conn_req(csk);
3056
3057 done:
3058         csk_put(csk);
3059 }
3060
3061 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3062 {
3063         struct cnic_local *cp = dev->cnic_priv;
3064         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3065         u8 opcode = l4kcqe->op_code;
3066         u32 l5_cid;
3067         struct cnic_sock *csk;
3068
3069         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3070             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3071                 cnic_cm_process_offld_pg(dev, l4kcqe);
3072                 return;
3073         }
3074
3075         l5_cid = l4kcqe->conn_id;
3076         if (opcode & 0x80)
3077                 l5_cid = l4kcqe->cid;
3078         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3079                 return;
3080
3081         csk = &cp->csk_tbl[l5_cid];
3082         csk_hold(csk);
3083
3084         if (!cnic_in_use(csk)) {
3085                 csk_put(csk);
3086                 return;
3087         }
3088
3089         switch (opcode) {
3090         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3091                 if (l4kcqe->status != 0) {
3092                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3093                         cnic_cm_upcall(cp, csk,
3094                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3095                 }
3096                 break;
3097         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3098                 if (l4kcqe->status == 0)
3099                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3100
3101                 smp_mb__before_clear_bit();
3102                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3103                 cnic_cm_upcall(cp, csk, opcode);
3104                 break;
3105
3106         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3107                 if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
3108                         cnic_cm_upcall(cp, csk, opcode);
3109                         break;
3110                 } else if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags))
3111                         csk->state = opcode;
3112                 /* fall through */
3113         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3114         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3115         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3116         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3117                 cp->close_conn(csk, opcode);
3118                 break;
3119
3120         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3121                 cnic_cm_upcall(cp, csk, opcode);
3122                 break;
3123         }
3124         csk_put(csk);
3125 }
3126
3127 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3128 {
3129         struct cnic_dev *dev = data;
3130         int i;
3131
3132         for (i = 0; i < num; i++)
3133                 cnic_cm_process_kcqe(dev, kcqe[i]);
3134 }
3135
3136 static struct cnic_ulp_ops cm_ulp_ops = {
3137         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3138 };
3139
3140 static void cnic_cm_free_mem(struct cnic_dev *dev)
3141 {
3142         struct cnic_local *cp = dev->cnic_priv;
3143
3144         kfree(cp->csk_tbl);
3145         cp->csk_tbl = NULL;
3146         cnic_free_id_tbl(&cp->csk_port_tbl);
3147 }
3148
3149 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3150 {
3151         struct cnic_local *cp = dev->cnic_priv;
3152
3153         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3154                               GFP_KERNEL);
3155         if (!cp->csk_tbl)
3156                 return -ENOMEM;
3157
3158         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3159                              CNIC_LOCAL_PORT_MIN)) {
3160                 cnic_cm_free_mem(dev);
3161                 return -ENOMEM;
3162         }
3163         return 0;
3164 }
3165
3166 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3167 {
3168         if ((opcode == csk->state) ||
3169             (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED &&
3170              csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) {
3171                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags))
3172                         return 1;
3173         }
3174         /* 57710+ only  workaround to handle unsolicited RESET_COMP
3175          * which will be treated like a RESET RCVD notification
3176          * which triggers the clean up procedure
3177          */
3178         else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
3179                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
3180                         csk->state = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
3181                         return 1;
3182                 }
3183         }
3184         return 0;
3185 }
3186
3187 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3188 {
3189         struct cnic_dev *dev = csk->dev;
3190         struct cnic_local *cp = dev->cnic_priv;
3191
3192         clear_bit(SK_F_CONNECT_START, &csk->flags);
3193         cnic_close_conn(csk);
3194         cnic_cm_upcall(cp, csk, opcode);
3195 }
3196
3197 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3198 {
3199 }
3200
3201 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3202 {
3203         u32 seed;
3204
3205         get_random_bytes(&seed, 4);
3206         cnic_ctx_wr(dev, 45, 0, seed);
3207         return 0;
3208 }
3209
3210 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3211 {
3212         struct cnic_dev *dev = csk->dev;
3213         struct cnic_local *cp = dev->cnic_priv;
3214         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3215         union l5cm_specific_data l5_data;
3216         u32 cmd = 0;
3217         int close_complete = 0;
3218
3219         switch (opcode) {
3220         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3221         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3222         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3223                 if (cnic_ready_to_close(csk, opcode))
3224                         cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3225                 break;
3226         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3227                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3228                 break;
3229         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3230                 close_complete = 1;
3231                 break;
3232         }
3233         if (cmd) {
3234                 memset(&l5_data, 0, sizeof(l5_data));
3235
3236                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3237                                     &l5_data);
3238         } else if (close_complete) {
3239                 ctx->timestamp = jiffies;
3240                 cnic_close_conn(csk);
3241                 cnic_cm_upcall(cp, csk, csk->state);
3242         }
3243 }
3244
3245 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3246 {
3247 }
3248
3249 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3250 {
3251         struct cnic_local *cp = dev->cnic_priv;
3252         int func = CNIC_FUNC(cp);
3253
3254         cnic_init_bnx2x_mac(dev);
3255         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3256
3257         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3258                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(func), 0);
3259
3260         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3261                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(func), 1);
3262         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3263                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(func),
3264                 DEF_MAX_DA_COUNT);
3265
3266         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3267                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(func), DEF_TTL);
3268         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3269                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(func), DEF_TOS);
3270         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3271                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(func), 2);
3272         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3273                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(func), DEF_SWS_TIMER);
3274
3275         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(func),
3276                 DEF_MAX_CWND);
3277         return 0;
3278 }
3279
3280 static int cnic_cm_open(struct cnic_dev *dev)
3281 {
3282         struct cnic_local *cp = dev->cnic_priv;
3283         int err;
3284
3285         err = cnic_cm_alloc_mem(dev);
3286         if (err)
3287                 return err;
3288
3289         err = cp->start_cm(dev);
3290
3291         if (err)
3292                 goto err_out;
3293
3294         dev->cm_create = cnic_cm_create;
3295         dev->cm_destroy = cnic_cm_destroy;
3296         dev->cm_connect = cnic_cm_connect;
3297         dev->cm_abort = cnic_cm_abort;
3298         dev->cm_close = cnic_cm_close;
3299         dev->cm_select_dev = cnic_cm_select_dev;
3300
3301         cp->ulp_handle[CNIC_ULP_L4] = dev;
3302         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
3303         return 0;
3304
3305 err_out:
3306         cnic_cm_free_mem(dev);
3307         return err;
3308 }
3309
3310 static int cnic_cm_shutdown(struct cnic_dev *dev)
3311 {
3312         struct cnic_local *cp = dev->cnic_priv;
3313         int i;
3314
3315         cp->stop_cm(dev);
3316
3317         if (!cp->csk_tbl)
3318                 return 0;
3319
3320         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
3321                 struct cnic_sock *csk = &cp->csk_tbl[i];
3322
3323                 clear_bit(SK_F_INUSE, &csk->flags);
3324                 cnic_cm_cleanup(csk);
3325         }
3326         cnic_cm_free_mem(dev);
3327
3328         return 0;
3329 }
3330
3331 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
3332 {
3333         struct cnic_local *cp = dev->cnic_priv;
3334         u32 cid_addr;
3335         int i;
3336
3337         if (CHIP_NUM(cp) == CHIP_NUM_5709)
3338                 return;
3339
3340         cid_addr = GET_CID_ADDR(cid);
3341
3342         for (i = 0; i < CTX_SIZE; i += 4)
3343                 cnic_ctx_wr(dev, cid_addr, i, 0);
3344 }
3345
3346 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
3347 {
3348         struct cnic_local *cp = dev->cnic_priv;
3349         int ret = 0, i;
3350         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
3351
3352         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3353                 return 0;
3354
3355         for (i = 0; i < cp->ctx_blks; i++) {
3356                 int j;
3357                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
3358                 u32 val;
3359
3360                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
3361
3362                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
3363                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
3364                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
3365                         (u64) cp->ctx_arr[i].mapping >> 32);
3366                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
3367                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
3368                 for (j = 0; j < 10; j++) {
3369
3370                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
3371                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
3372                                 break;
3373                         udelay(5);
3374                 }
3375                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
3376                         ret = -EBUSY;
3377                         break;
3378                 }
3379         }
3380         return ret;
3381 }
3382
3383 static void cnic_free_irq(struct cnic_dev *dev)
3384 {
3385         struct cnic_local *cp = dev->cnic_priv;
3386         struct cnic_eth_dev *ethdev = cp->ethdev;
3387
3388         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3389                 cp->disable_int_sync(dev);
3390                 tasklet_disable(&cp->cnic_irq_task);
3391                 free_irq(ethdev->irq_arr[0].vector, dev);
3392         }
3393 }
3394
3395 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
3396 {
3397         struct cnic_local *cp = dev->cnic_priv;
3398         struct cnic_eth_dev *ethdev = cp->ethdev;
3399
3400         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3401                 int err, i = 0;
3402                 int sblk_num = cp->status_blk_num;
3403                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
3404                            BNX2_HC_SB_CONFIG_1;
3405
3406                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
3407
3408                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
3409                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
3410                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
3411
3412                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
3413                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
3414                              (unsigned long) dev);
3415                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3416                                   "cnic", dev);
3417                 if (err) {
3418                         tasklet_disable(&cp->cnic_irq_task);
3419                         return err;
3420                 }
3421                 while (cp->status_blk.bnx2->status_completion_producer_index &&
3422                        i < 10) {
3423                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
3424                                 1 << (11 + sblk_num));
3425                         udelay(10);
3426                         i++;
3427                         barrier();
3428                 }
3429                 if (cp->status_blk.bnx2->status_completion_producer_index) {
3430                         cnic_free_irq(dev);
3431                         goto failed;
3432                 }
3433
3434         } else {
3435                 struct status_block *sblk = cp->status_blk.gen;
3436                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
3437                 int i = 0;
3438
3439                 while (sblk->status_completion_producer_index && i < 10) {
3440                         CNIC_WR(dev, BNX2_HC_COMMAND,
3441                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
3442                         udelay(10);
3443                         i++;
3444                         barrier();
3445                 }
3446                 if (sblk->status_completion_producer_index)
3447                         goto failed;
3448
3449         }
3450         return 0;
3451
3452 failed:
3453         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
3454         return -EBUSY;
3455 }
3456
3457 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
3458 {
3459         struct cnic_local *cp = dev->cnic_priv;
3460         struct cnic_eth_dev *ethdev = cp->ethdev;
3461
3462         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3463                 return;
3464
3465         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3466                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3467 }
3468
3469 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
3470 {
3471         struct cnic_local *cp = dev->cnic_priv;
3472         struct cnic_eth_dev *ethdev = cp->ethdev;
3473
3474         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3475                 return;
3476
3477         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3478                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
3479         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
3480         synchronize_irq(ethdev->irq_arr[0].vector);
3481 }
3482
3483 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
3484 {
3485         struct cnic_local *cp = dev->cnic_priv;
3486         struct cnic_eth_dev *ethdev = cp->ethdev;
3487         u32 cid_addr, tx_cid, sb_id;
3488         u32 val, offset0, offset1, offset2, offset3;
3489         int i;
3490         struct tx_bd *txbd;
3491         dma_addr_t buf_map;
3492         struct status_block *s_blk = cp->status_blk.gen;
3493
3494         sb_id = cp->status_blk_num;
3495         tx_cid = 20;
3496         cnic_init_context(dev, tx_cid);
3497         cnic_init_context(dev, tx_cid + 1);
3498         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
3499         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3500                 struct status_block_msix *sblk = cp->status_blk.bnx2;
3501
3502                 tx_cid = TX_TSS_CID + sb_id - 1;
3503                 cnic_init_context(dev, tx_cid);
3504                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
3505                         (TX_TSS_CID << 7));
3506                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
3507         }
3508         cp->tx_cons = *cp->tx_cons_ptr;
3509
3510         cid_addr = GET_CID_ADDR(tx_cid);
3511         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
3512                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
3513
3514                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
3515                         cnic_ctx_wr(dev, cid_addr2, i, 0);
3516
3517                 offset0 = BNX2_L2CTX_TYPE_XI;
3518                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
3519                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
3520                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
3521         } else {
3522                 offset0 = BNX2_L2CTX_TYPE;
3523                 offset1 = BNX2_L2CTX_CMD_TYPE;
3524                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
3525                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
3526         }
3527         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
3528         cnic_ctx_wr(dev, cid_addr, offset0, val);
3529
3530         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
3531         cnic_ctx_wr(dev, cid_addr, offset1, val);
3532
3533         txbd = (struct tx_bd *) cp->l2_ring;
3534
3535         buf_map = cp->l2_buf_map;
3536         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
3537                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
3538                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3539         }
3540         val = (u64) cp->l2_ring_map >> 32;
3541         cnic_ctx_wr(dev, cid_addr, offset2, val);
3542         txbd->tx_bd_haddr_hi = val;
3543
3544         val = (u64) cp->l2_ring_map & 0xffffffff;
3545         cnic_ctx_wr(dev, cid_addr, offset3, val);
3546         txbd->tx_bd_haddr_lo = val;
3547 }
3548
3549 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
3550 {
3551         struct cnic_local *cp = dev->cnic_priv;
3552         struct cnic_eth_dev *ethdev = cp->ethdev;
3553         u32 cid_addr, sb_id, val, coal_reg, coal_val;
3554         int i;
3555         struct rx_bd *rxbd;
3556         struct status_block *s_blk = cp->status_blk.gen;
3557
3558         sb_id = cp->status_blk_num;
3559         cnic_init_context(dev, 2);
3560         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
3561         coal_reg = BNX2_HC_COMMAND;
3562         coal_val = CNIC_RD(dev, coal_reg);
3563         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3564                 struct status_block_msix *sblk = cp->status_blk.bnx2;
3565
3566                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
3567                 coal_reg = BNX2_HC_COALESCE_NOW;
3568                 coal_val = 1 << (11 + sb_id);
3569         }
3570         i = 0;
3571         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
3572                 CNIC_WR(dev, coal_reg, coal_val);
3573                 udelay(10);
3574                 i++;
3575                 barrier();
3576         }
3577         cp->rx_cons = *cp->rx_cons_ptr;
3578
3579         cid_addr = GET_CID_ADDR(2);
3580         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
3581               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
3582         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
3583
3584         if (sb_id == 0)
3585                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
3586         else
3587                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
3588         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
3589
3590         rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE);
3591         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
3592                 dma_addr_t buf_map;
3593                 int n = (i % cp->l2_rx_ring_size) + 1;
3594
3595                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3596                 rxbd->rx_bd_len = cp->l2_single_buf_size;
3597                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
3598                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
3599                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3600         }
3601         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3602         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
3603         rxbd->rx_bd_haddr_hi = val;
3604
3605         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3606         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
3607         rxbd->rx_bd_haddr_lo = val;
3608
3609         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
3610         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
3611 }
3612
3613 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
3614 {
3615         struct kwqe *wqes[1], l2kwqe;
3616
3617         memset(&l2kwqe, 0, sizeof(l2kwqe));
3618         wqes[0] = &l2kwqe;
3619         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) |
3620                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
3621                                KWQE_OPCODE_SHIFT) | 2;
3622         dev->submit_kwqes(dev, wqes, 1);
3623 }
3624
3625 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
3626 {
3627         struct cnic_local *cp = dev->cnic_priv;
3628         u32 val;
3629
3630         val = cp->func << 2;
3631
3632         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
3633
3634         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3635                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
3636         dev->mac_addr[0] = (u8) (val >> 8);
3637         dev->mac_addr[1] = (u8) val;
3638
3639         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
3640
3641         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3642                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
3643         dev->mac_addr[2] = (u8) (val >> 24);
3644         dev->mac_addr[3] = (u8) (val >> 16);
3645         dev->mac_addr[4] = (u8) (val >> 8);
3646         dev->mac_addr[5] = (u8) val;
3647
3648         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
3649
3650         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
3651         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3652                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
3653
3654         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
3655         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
3656         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
3657 }
3658
3659 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
3660 {
3661         struct cnic_local *cp = dev->cnic_priv;
3662         struct cnic_eth_dev *ethdev = cp->ethdev;
3663         struct status_block *sblk = cp->status_blk.gen;
3664         u32 val;
3665         int err;
3666
3667         cnic_set_bnx2_mac(dev);
3668
3669         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
3670         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
3671         if (BCM_PAGE_BITS > 12)
3672                 val |= (12 - 8)  << 4;
3673         else
3674                 val |= (BCM_PAGE_BITS - 8)  << 4;
3675
3676         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
3677
3678         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
3679         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
3680         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
3681
3682         err = cnic_setup_5709_context(dev, 1);
3683         if (err)
3684                 return err;
3685
3686         cnic_init_context(dev, KWQ_CID);
3687         cnic_init_context(dev, KCQ_CID);
3688
3689         cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
3690         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
3691
3692         cp->max_kwq_idx = MAX_KWQ_IDX;
3693         cp->kwq_prod_idx = 0;
3694         cp->kwq_con_idx = 0;
3695         cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT;
3696
3697         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
3698                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
3699         else
3700                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
3701
3702         /* Initialize the kernel work 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->kwq_cid_addr, L5_KRNLQ_TYPE, val);
3706
3707         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
3708         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3709
3710         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
3711         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3712
3713         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
3714         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3715
3716         val = (u32) cp->kwq_info.pgtbl_map;
3717         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3718
3719         cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
3720         cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
3721
3722         cp->kcq_prod_idx = 0;
3723
3724         /* Initialize the kernel complete queue context. */
3725         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3726               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3727         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val);
3728
3729         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
3730         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3731
3732         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
3733         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3734
3735         val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32);
3736         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3737
3738         val = (u32) cp->kcq_info.pgtbl_map;
3739         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3740
3741         cp->int_num = 0;
3742         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3743                 u32 sb_id = cp->status_blk_num;
3744                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
3745
3746                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
3747                 cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3748                 cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3749         }
3750
3751         /* Enable Commnad Scheduler notification when we write to the
3752          * host producer index of the kernel contexts. */
3753         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
3754
3755         /* Enable Command Scheduler notification when we write to either
3756          * the Send Queue or Receive Queue producer indexes of the kernel
3757          * bypass contexts. */
3758         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
3759         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
3760
3761         /* Notify COM when the driver post an application buffer. */
3762         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
3763
3764         /* Set the CP and COM doorbells.  These two processors polls the
3765          * doorbell for a non zero value before running.  This must be done
3766          * after setting up the kernel queue contexts. */
3767         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
3768         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
3769
3770         cnic_init_bnx2_tx_ring(dev);
3771         cnic_init_bnx2_rx_ring(dev);
3772
3773         err = cnic_init_bnx2_irq(dev);
3774         if (err) {
3775                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
3776                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
3777                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
3778                 return err;
3779         }
3780
3781         return 0;
3782 }
3783
3784 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
3785 {
3786         struct cnic_local *cp = dev->cnic_priv;
3787         struct cnic_eth_dev *ethdev = cp->ethdev;
3788         u32 start_offset = ethdev->ctx_tbl_offset;
3789         int i;
3790
3791         for (i = 0; i < cp->ctx_blks; i++) {
3792                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
3793                 dma_addr_t map = ctx->mapping;
3794
3795                 if (cp->ctx_align) {
3796                         unsigned long mask = cp->ctx_align - 1;
3797
3798                         map = (map + mask) & ~mask;
3799                 }
3800
3801                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
3802         }
3803 }
3804
3805 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
3806 {
3807         struct cnic_local *cp = dev->cnic_priv;
3808         struct cnic_eth_dev *ethdev = cp->ethdev;
3809         int err = 0;
3810
3811         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
3812                      (unsigned long) dev);
3813         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3814                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3815                                   "cnic", dev);
3816                 if (err)
3817                         tasklet_disable(&cp->cnic_irq_task);
3818         }
3819         return err;
3820 }
3821
3822 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
3823 {
3824         struct cnic_local *cp = dev->cnic_priv;
3825         u8 sb_id = cp->status_blk_num;
3826         int port = CNIC_PORT(cp);
3827
3828         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
3829                  CSTORM_SB_HC_TIMEOUT_C_OFFSET(port, sb_id,
3830                                                HC_INDEX_C_ISCSI_EQ_CONS),
3831                  64 / 12);
3832         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
3833                   CSTORM_SB_HC_DISABLE_C_OFFSET(port, sb_id,
3834                                                 HC_INDEX_C_ISCSI_EQ_CONS), 0);
3835 }
3836
3837 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
3838 {
3839 }
3840
3841 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev)
3842 {
3843         struct cnic_local *cp = dev->cnic_priv;
3844         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) cp->l2_ring;
3845         struct eth_context *context;
3846         struct regpair context_addr;
3847         dma_addr_t buf_map;
3848         int func = CNIC_FUNC(cp);
3849         int port = CNIC_PORT(cp);
3850         int i;
3851         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3852         u32 val;
3853
3854         memset(txbd, 0, BCM_PAGE_SIZE);
3855
3856         buf_map = cp->l2_buf_map;
3857         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
3858                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
3859                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
3860
3861                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3862                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3863                 reg_bd->addr_hi = start_bd->addr_hi;
3864                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
3865                 start_bd->nbytes = cpu_to_le16(0x10);
3866                 start_bd->nbd = cpu_to_le16(3);
3867                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
3868                 start_bd->general_data = (UNICAST_ADDRESS <<
3869                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
3870                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
3871
3872         }
3873         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 1, &context_addr);
3874
3875         val = (u64) cp->l2_ring_map >> 32;
3876         txbd->next_bd.addr_hi = cpu_to_le32(val);
3877
3878         context->xstorm_st_context.tx_bd_page_base_hi = val;
3879
3880         val = (u64) cp->l2_ring_map & 0xffffffff;
3881         txbd->next_bd.addr_lo = cpu_to_le32(val);
3882
3883         context->xstorm_st_context.tx_bd_page_base_lo = val;
3884
3885         context->cstorm_st_context.sb_index_number =
3886                 HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS;
3887         context->cstorm_st_context.status_block_id = BNX2X_DEF_SB_ID;
3888
3889         context->xstorm_st_context.statistics_data = (cli |
3890                                 XSTORM_ETH_ST_CONTEXT_STATISTICS_ENABLE);
3891
3892         context->xstorm_ag_context.cdu_reserved =
3893                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3894                                         CDU_REGION_NUMBER_XCM_AG,
3895                                         ETH_CONNECTION_TYPE);
3896
3897         /* reset xstorm per client statistics */
3898         val = BAR_XSTRORM_INTMEM +
3899               XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3900         for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
3901                 CNIC_WR(dev, val + i * 4, 0);
3902
3903         cp->tx_cons_ptr =
3904                 &cp->bnx2x_def_status_blk->c_def_status_block.index_values[
3905                         HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS];
3906 }
3907
3908 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev)
3909 {
3910         struct cnic_local *cp = dev->cnic_priv;
3911         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (cp->l2_ring +
3912                                 BCM_PAGE_SIZE);
3913         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
3914                                 (cp->l2_ring + (2 * BCM_PAGE_SIZE));
3915         struct eth_context *context;
3916         struct regpair context_addr;
3917         int i;
3918         int port = CNIC_PORT(cp);
3919         int func = CNIC_FUNC(cp);
3920         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3921         u32 val;
3922         struct tstorm_eth_client_config tstorm_client = {0};
3923
3924         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
3925                 dma_addr_t buf_map;
3926                 int n = (i % cp->l2_rx_ring_size) + 1;
3927
3928                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3929                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3930                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3931         }
3932         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 0, &context_addr);
3933
3934         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3935         rxbd->addr_hi = cpu_to_le32(val);
3936
3937         context->ustorm_st_context.common.bd_page_base_hi = val;
3938
3939         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3940         rxbd->addr_lo = cpu_to_le32(val);
3941
3942         context->ustorm_st_context.common.bd_page_base_lo = val;
3943
3944         context->ustorm_st_context.common.sb_index_numbers =
3945                                                 BNX2X_ISCSI_RX_SB_INDEX_NUM;
3946         context->ustorm_st_context.common.clientId = cli;
3947         context->ustorm_st_context.common.status_block_id = BNX2X_DEF_SB_ID;
3948         context->ustorm_st_context.common.flags =
3949                 USTORM_ETH_ST_CONTEXT_CONFIG_ENABLE_STATISTICS;
3950         context->ustorm_st_context.common.statistics_counter_id = cli;
3951         context->ustorm_st_context.common.mc_alignment_log_size = 0;
3952         context->ustorm_st_context.common.bd_buff_size =
3953                                                 cp->l2_single_buf_size;
3954
3955         context->ustorm_ag_context.cdu_usage =
3956                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3957                                         CDU_REGION_NUMBER_UCM_AG,
3958                                         ETH_CONNECTION_TYPE);
3959
3960         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
3961         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
3962         rxcqe->addr_hi = cpu_to_le32(val);
3963
3964         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3965                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli) + 4, val);
3966
3967         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3968                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli) + 4, val);
3969
3970         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
3971         rxcqe->addr_lo = cpu_to_le32(val);
3972
3973         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3974                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli), val);
3975
3976         CNIC_WR(dev, BAR_USTRORM_INTMEM +
3977                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli), val);
3978
3979         /* client tstorm info */
3980         tstorm_client.mtu = cp->l2_single_buf_size - 14;
3981         tstorm_client.config_flags =
3982                         (TSTORM_ETH_CLIENT_CONFIG_E1HOV_REM_ENABLE |
3983                         TSTORM_ETH_CLIENT_CONFIG_STATSITICS_ENABLE);
3984         tstorm_client.statistics_counter_id = cli;
3985
3986         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
3987                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli),
3988                    ((u32 *)&tstorm_client)[0]);
3989         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
3990                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli) + 4,
3991                    ((u32 *)&tstorm_client)[1]);
3992
3993         /* reset tstorm per client statistics */
3994         val = BAR_TSTRORM_INTMEM +
3995               TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3996         for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
3997                 CNIC_WR(dev, val + i * 4, 0);
3998
3999         /* reset ustorm per client statistics */
4000         val = BAR_USTRORM_INTMEM +
4001               USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4002         for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
4003                 CNIC_WR(dev, val + i * 4, 0);
4004
4005         cp->rx_cons_ptr =
4006                 &cp->bnx2x_def_status_blk->u_def_status_block.index_values[
4007                         HC_INDEX_DEF_U_ETH_ISCSI_RX_CQ_CONS];
4008 }
4009
4010 static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
4011 {
4012         struct cnic_local *cp = dev->cnic_priv;
4013         u32 base, addr, val;
4014         int port = CNIC_PORT(cp);
4015
4016         dev->max_iscsi_conn = 0;
4017         base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
4018         if (base < 0xa0000 || base >= 0xc0000)
4019                 return;
4020
4021         addr = BNX2X_SHMEM_ADDR(base,
4022                 dev_info.port_hw_config[port].iscsi_mac_upper);
4023
4024         val = CNIC_RD(dev, addr);
4025
4026         dev->mac_addr[0] = (u8) (val >> 8);
4027         dev->mac_addr[1] = (u8) val;
4028
4029         addr = BNX2X_SHMEM_ADDR(base,
4030                 dev_info.port_hw_config[port].iscsi_mac_lower);
4031
4032         val = CNIC_RD(dev, addr);
4033
4034         dev->mac_addr[2] = (u8) (val >> 24);
4035         dev->mac_addr[3] = (u8) (val >> 16);
4036         dev->mac_addr[4] = (u8) (val >> 8);
4037         dev->mac_addr[5] = (u8) val;
4038
4039         addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
4040         val = CNIC_RD(dev, addr);
4041
4042         if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
4043                 u16 val16;
4044
4045                 addr = BNX2X_SHMEM_ADDR(base,
4046                                 drv_lic_key[port].max_iscsi_init_conn);
4047                 val16 = CNIC_RD16(dev, addr);
4048
4049                 if (val16)
4050                         val16 ^= 0x1e1e;
4051                 dev->max_iscsi_conn = val16;
4052         }
4053         if (BNX2X_CHIP_IS_E1H(cp->chip_id)) {
4054                 int func = CNIC_FUNC(cp);
4055
4056                 addr = BNX2X_SHMEM_ADDR(base,
4057                                 mf_cfg.func_mf_config[func].e1hov_tag);
4058                 val = CNIC_RD(dev, addr);
4059                 val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
4060                 if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
4061                         addr = BNX2X_SHMEM_ADDR(base,
4062                                 mf_cfg.func_mf_config[func].config);
4063                         val = CNIC_RD(dev, addr);
4064                         val &= FUNC_MF_CFG_PROTOCOL_MASK;
4065                         if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
4066                                 dev->max_iscsi_conn = 0;
4067                 }
4068         }
4069 }
4070
4071 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4072 {
4073         struct cnic_local *cp = dev->cnic_priv;
4074         int func = CNIC_FUNC(cp), ret, i;
4075         int port = CNIC_PORT(cp);
4076         u16 eq_idx;
4077         u8 sb_id = cp->status_blk_num;
4078
4079         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4080                                BNX2X_ISCSI_START_CID);
4081
4082         if (ret)
4083                 return -ENOMEM;
4084
4085         cp->kcq_io_addr = BAR_CSTRORM_INTMEM +
4086                           CSTORM_ISCSI_EQ_PROD_OFFSET(func, 0);
4087         cp->kcq_prod_idx = 0;
4088
4089         cnic_get_bnx2x_iscsi_info(dev);
4090
4091         /* Only 1 EQ */
4092         CNIC_WR16(dev, cp->kcq_io_addr, MAX_KCQ_IDX);
4093         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4094                 CSTORM_ISCSI_EQ_CONS_OFFSET(func, 0), 0);
4095         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4096                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0),
4097                 cp->kcq_info.pg_map_arr[1] & 0xffffffff);
4098         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4099                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0) + 4,
4100                 (u64) cp->kcq_info.pg_map_arr[1] >> 32);
4101         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4102                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0),
4103                 cp->kcq_info.pg_map_arr[0] & 0xffffffff);
4104         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4105                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0) + 4,
4106                 (u64) cp->kcq_info.pg_map_arr[0] >> 32);
4107         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4108                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(func, 0), 1);
4109         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4110                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(func, 0), cp->status_blk_num);
4111         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4112                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(func, 0),
4113                 HC_INDEX_C_ISCSI_EQ_CONS);
4114
4115         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4116                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4117                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i),
4118                         cp->conn_buf_info.pgtbl[2 * i]);
4119                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4120                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i) + 4,
4121                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4122         }
4123
4124         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4125                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func),
4126                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4127         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4128                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func) + 4,
4129                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4130
4131         cnic_setup_bnx2x_context(dev);
4132
4133         eq_idx = CNIC_RD16(dev, BAR_CSTRORM_INTMEM +
4134                            CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4135                            offsetof(struct cstorm_status_block_c,
4136                                     index_values[HC_INDEX_C_ISCSI_EQ_CONS]));
4137         if (eq_idx != 0) {
4138                 netdev_err(dev->netdev, "EQ cons index %x != 0\n", eq_idx);
4139                 return -EBUSY;
4140         }
4141         ret = cnic_init_bnx2x_irq(dev);
4142         if (ret)
4143                 return ret;
4144
4145         cnic_init_bnx2x_tx_ring(dev);
4146         cnic_init_bnx2x_rx_ring(dev);
4147
4148         return 0;
4149 }
4150
4151 static void cnic_init_rings(struct cnic_dev *dev)
4152 {
4153         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4154                 cnic_init_bnx2_tx_ring(dev);
4155                 cnic_init_bnx2_rx_ring(dev);
4156         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4157                 struct cnic_local *cp = dev->cnic_priv;
4158                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4159                 union l5cm_specific_data l5_data;
4160                 struct ustorm_eth_rx_producers rx_prods = {0};
4161                 u32 off, i;
4162
4163                 rx_prods.bd_prod = 0;
4164                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4165                 barrier();
4166
4167                 off = BAR_USTRORM_INTMEM +
4168                         USTORM_RX_PRODS_OFFSET(CNIC_PORT(cp), cli);
4169
4170                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4171                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4172
4173                 cnic_init_bnx2x_tx_ring(dev);
4174                 cnic_init_bnx2x_rx_ring(dev);
4175
4176                 l5_data.phy_address.lo = cli;
4177                 l5_data.phy_address.hi = 0;
4178                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4179                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4180                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
4181         }
4182 }
4183
4184 static void cnic_shutdown_rings(struct cnic_dev *dev)
4185 {
4186         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4187                 cnic_shutdown_bnx2_rx_ring(dev);
4188         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4189                 struct cnic_local *cp = dev->cnic_priv;
4190                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4191                 union l5cm_specific_data l5_data;
4192
4193                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0);
4194
4195                 l5_data.phy_address.lo = cli;
4196                 l5_data.phy_address.hi = 0;
4197                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4198                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4199                 msleep(10);
4200
4201                 memset(&l5_data, 0, sizeof(l5_data));
4202                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
4203                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE |
4204                         (1 << SPE_HDR_COMMON_RAMROD_SHIFT), &l5_data);
4205                 msleep(10);
4206         }
4207 }
4208
4209 static int cnic_register_netdev(struct cnic_dev *dev)
4210 {
4211         struct cnic_local *cp = dev->cnic_priv;
4212         struct cnic_eth_dev *ethdev = cp->ethdev;
4213         int err;
4214
4215         if (!ethdev)
4216                 return -ENODEV;
4217
4218         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
4219                 return 0;
4220
4221         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4222         if (err)
4223                 netdev_err(dev->netdev, "register_cnic failed\n");
4224
4225         return err;
4226 }
4227
4228 static void cnic_unregister_netdev(struct cnic_dev *dev)
4229 {
4230         struct cnic_local *cp = dev->cnic_priv;
4231         struct cnic_eth_dev *ethdev = cp->ethdev;
4232
4233         if (!ethdev)
4234                 return;
4235
4236         ethdev->drv_unregister_cnic(dev->netdev);
4237 }
4238
4239 static int cnic_start_hw(struct cnic_dev *dev)
4240 {
4241         struct cnic_local *cp = dev->cnic_priv;
4242         struct cnic_eth_dev *ethdev = cp->ethdev;
4243         int err;
4244
4245         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
4246                 return -EALREADY;
4247
4248         dev->regview = ethdev->io_base;
4249         cp->chip_id = ethdev->chip_id;
4250         pci_dev_get(dev->pcidev);
4251         cp->func = PCI_FUNC(dev->pcidev->devfn);
4252         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
4253         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
4254
4255         err = cp->alloc_resc(dev);
4256         if (err) {
4257                 netdev_err(dev->netdev, "allocate resource failure\n");
4258                 goto err1;
4259         }
4260
4261         err = cp->start_hw(dev);
4262         if (err)
4263                 goto err1;
4264
4265         err = cnic_cm_open(dev);
4266         if (err)
4267                 goto err1;
4268
4269         set_bit(CNIC_F_CNIC_UP, &dev->flags);
4270
4271         cp->enable_int(dev);
4272
4273         return 0;
4274
4275 err1:
4276         cp->free_resc(dev);
4277         pci_dev_put(dev->pcidev);
4278         return err;
4279 }
4280
4281 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
4282 {
4283         cnic_disable_bnx2_int_sync(dev);
4284
4285         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4286         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4287
4288         cnic_init_context(dev, KWQ_CID);
4289         cnic_init_context(dev, KCQ_CID);
4290
4291         cnic_setup_5709_context(dev, 0);
4292         cnic_free_irq(dev);
4293
4294         cnic_free_resc(dev);
4295 }
4296
4297
4298 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
4299 {
4300         struct cnic_local *cp = dev->cnic_priv;
4301         u8 sb_id = cp->status_blk_num;
4302         int port = CNIC_PORT(cp);
4303
4304         cnic_free_irq(dev);
4305         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4306                   CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4307                   offsetof(struct cstorm_status_block_c,
4308                            index_values[HC_INDEX_C_ISCSI_EQ_CONS]),
4309                   0);
4310         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4311                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->func, 0), 0);
4312         CNIC_WR16(dev, cp->kcq_io_addr, 0);
4313         cnic_free_resc(dev);
4314 }
4315
4316 static void cnic_stop_hw(struct cnic_dev *dev)
4317 {
4318         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4319                 struct cnic_local *cp = dev->cnic_priv;
4320
4321                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
4322                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
4323                 synchronize_rcu();
4324                 cnic_cm_shutdown(dev);
4325                 cp->stop_hw(dev);
4326                 pci_dev_put(dev->pcidev);
4327         }
4328 }
4329
4330 static void cnic_free_dev(struct cnic_dev *dev)
4331 {
4332         int i = 0;
4333
4334         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
4335                 msleep(100);
4336                 i++;
4337         }
4338         if (atomic_read(&dev->ref_count) != 0)
4339                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
4340
4341         netdev_info(dev->netdev, "Removed CNIC device\n");
4342         dev_put(dev->netdev);
4343         kfree(dev);
4344 }
4345
4346 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
4347                                        struct pci_dev *pdev)
4348 {
4349         struct cnic_dev *cdev;
4350         struct cnic_local *cp;
4351         int alloc_size;
4352
4353         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
4354
4355         cdev = kzalloc(alloc_size , GFP_KERNEL);
4356         if (cdev == NULL) {
4357                 netdev_err(dev, "allocate dev struct failure\n");
4358                 return NULL;
4359         }
4360
4361         cdev->netdev = dev;
4362         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
4363         cdev->register_device = cnic_register_device;
4364         cdev->unregister_device = cnic_unregister_device;
4365         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
4366
4367         cp = cdev->cnic_priv;
4368         cp->dev = cdev;
4369         cp->uio_dev = -1;
4370         cp->l2_single_buf_size = 0x400;
4371         cp->l2_rx_ring_size = 3;
4372
4373         spin_lock_init(&cp->cnic_ulp_lock);
4374
4375         netdev_info(dev, "Added CNIC device\n");
4376
4377         return cdev;
4378 }
4379
4380 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
4381 {
4382         struct pci_dev *pdev;
4383         struct cnic_dev *cdev;
4384         struct cnic_local *cp;
4385         struct cnic_eth_dev *ethdev = NULL;
4386         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4387
4388         probe = symbol_get(bnx2_cnic_probe);
4389         if (probe) {
4390                 ethdev = (*probe)(dev);
4391                 symbol_put(bnx2_cnic_probe);
4392         }
4393         if (!ethdev)
4394                 return NULL;
4395
4396         pdev = ethdev->pdev;
4397         if (!pdev)
4398                 return NULL;
4399
4400         dev_hold(dev);
4401         pci_dev_get(pdev);
4402         if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
4403             pdev->device == PCI_DEVICE_ID_NX2_5709S) {
4404                 u8 rev;
4405
4406                 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
4407                 if (rev < 0x10) {
4408                         pci_dev_put(pdev);
4409                         goto cnic_err;
4410                 }
4411         }
4412         pci_dev_put(pdev);
4413
4414         cdev = cnic_alloc_dev(dev, pdev);
4415         if (cdev == NULL)
4416                 goto cnic_err;
4417
4418         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
4419         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
4420
4421         cp = cdev->cnic_priv;
4422         cp->ethdev = ethdev;
4423         cdev->pcidev = pdev;
4424
4425         cp->cnic_ops = &cnic_bnx2_ops;
4426         cp->start_hw = cnic_start_bnx2_hw;
4427         cp->stop_hw = cnic_stop_bnx2_hw;
4428         cp->setup_pgtbl = cnic_setup_page_tbl;
4429         cp->alloc_resc = cnic_alloc_bnx2_resc;
4430         cp->free_resc = cnic_free_resc;
4431         cp->start_cm = cnic_cm_init_bnx2_hw;
4432         cp->stop_cm = cnic_cm_stop_bnx2_hw;
4433         cp->enable_int = cnic_enable_bnx2_int;
4434         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
4435         cp->close_conn = cnic_close_bnx2_conn;
4436         cp->next_idx = cnic_bnx2_next_idx;
4437         cp->hw_idx = cnic_bnx2_hw_idx;
4438         return cdev;
4439
4440 cnic_err:
4441         dev_put(dev);
4442         return NULL;
4443 }
4444
4445 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
4446 {
4447         struct pci_dev *pdev;
4448         struct cnic_dev *cdev;
4449         struct cnic_local *cp;
4450         struct cnic_eth_dev *ethdev = NULL;
4451         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4452
4453         probe = symbol_get(bnx2x_cnic_probe);
4454         if (probe) {
4455                 ethdev = (*probe)(dev);
4456                 symbol_put(bnx2x_cnic_probe);
4457         }
4458         if (!ethdev)
4459                 return NULL;
4460
4461         pdev = ethdev->pdev;
4462         if (!pdev)
4463                 return NULL;
4464
4465         dev_hold(dev);
4466         cdev = cnic_alloc_dev(dev, pdev);
4467         if (cdev == NULL) {
4468                 dev_put(dev);
4469                 return NULL;
4470         }
4471
4472         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
4473         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
4474
4475         cp = cdev->cnic_priv;
4476         cp->ethdev = ethdev;
4477         cdev->pcidev = pdev;
4478
4479         cp->cnic_ops = &cnic_bnx2x_ops;
4480         cp->start_hw = cnic_start_bnx2x_hw;
4481         cp->stop_hw = cnic_stop_bnx2x_hw;
4482         cp->setup_pgtbl = cnic_setup_page_tbl_le;
4483         cp->alloc_resc = cnic_alloc_bnx2x_resc;
4484         cp->free_resc = cnic_free_resc;
4485         cp->start_cm = cnic_cm_init_bnx2x_hw;
4486         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
4487         cp->enable_int = cnic_enable_bnx2x_int;
4488         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
4489         cp->ack_int = cnic_ack_bnx2x_msix;
4490         cp->close_conn = cnic_close_bnx2x_conn;
4491         cp->next_idx = cnic_bnx2x_next_idx;
4492         cp->hw_idx = cnic_bnx2x_hw_idx;
4493         return cdev;
4494 }
4495
4496 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
4497 {
4498         struct ethtool_drvinfo drvinfo;
4499         struct cnic_dev *cdev = NULL;
4500
4501         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
4502                 memset(&drvinfo, 0, sizeof(drvinfo));
4503                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
4504
4505                 if (!strcmp(drvinfo.driver, "bnx2"))
4506                         cdev = init_bnx2_cnic(dev);
4507                 if (!strcmp(drvinfo.driver, "bnx2x"))
4508                         cdev = init_bnx2x_cnic(dev);
4509                 if (cdev) {
4510                         write_lock(&cnic_dev_lock);
4511                         list_add(&cdev->list, &cnic_dev_list);
4512                         write_unlock(&cnic_dev_lock);
4513                 }
4514         }
4515         return cdev;
4516 }
4517
4518 /**
4519  * netdev event handler
4520  */
4521 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
4522                                                          void *ptr)
4523 {
4524         struct net_device *netdev = ptr;
4525         struct cnic_dev *dev;
4526         int if_type;
4527         int new_dev = 0;
4528
4529         dev = cnic_from_netdev(netdev);
4530
4531         if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
4532                 /* Check for the hot-plug device */
4533                 dev = is_cnic_dev(netdev);
4534                 if (dev) {
4535                         new_dev = 1;
4536                         cnic_hold(dev);
4537                 }
4538         }
4539         if (dev) {
4540                 struct cnic_local *cp = dev->cnic_priv;
4541
4542                 if (new_dev)
4543                         cnic_ulp_init(dev);
4544                 else if (event == NETDEV_UNREGISTER)
4545                         cnic_ulp_exit(dev);
4546
4547                 if (event == NETDEV_UP) {
4548                         if (cnic_register_netdev(dev) != 0) {
4549                                 cnic_put(dev);
4550                                 goto done;
4551                         }
4552                         if (!cnic_start_hw(dev))
4553                                 cnic_ulp_start(dev);
4554                 }
4555
4556                 rcu_read_lock();
4557                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
4558                         struct cnic_ulp_ops *ulp_ops;
4559                         void *ctx;
4560
4561                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
4562                         if (!ulp_ops || !ulp_ops->indicate_netevent)
4563                                 continue;
4564
4565                         ctx = cp->ulp_handle[if_type];
4566
4567                         ulp_ops->indicate_netevent(ctx, event);
4568                 }
4569                 rcu_read_unlock();
4570
4571                 if (event == NETDEV_GOING_DOWN) {
4572                         cnic_ulp_stop(dev);
4573                         cnic_stop_hw(dev);
4574                         cnic_unregister_netdev(dev);
4575                 } else if (event == NETDEV_UNREGISTER) {
4576                         write_lock(&cnic_dev_lock);
4577                         list_del_init(&dev->list);
4578                         write_unlock(&cnic_dev_lock);
4579
4580                         cnic_put(dev);
4581                         cnic_free_dev(dev);
4582                         goto done;
4583                 }
4584                 cnic_put(dev);
4585         }
4586 done:
4587         return NOTIFY_DONE;
4588 }
4589
4590 static struct notifier_block cnic_netdev_notifier = {
4591         .notifier_call = cnic_netdev_event
4592 };
4593
4594 static void cnic_release(void)
4595 {
4596         struct cnic_dev *dev;
4597
4598         while (!list_empty(&cnic_dev_list)) {
4599                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
4600                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4601                         cnic_ulp_stop(dev);
4602                         cnic_stop_hw(dev);
4603                 }
4604
4605                 cnic_ulp_exit(dev);
4606                 cnic_unregister_netdev(dev);
4607                 list_del_init(&dev->list);
4608                 cnic_free_dev(dev);
4609         }
4610 }
4611
4612 static int __init cnic_init(void)
4613 {
4614         int rc = 0;
4615
4616         pr_info("%s", version);
4617
4618         rc = register_netdevice_notifier(&cnic_netdev_notifier);
4619         if (rc) {
4620                 cnic_release();
4621                 return rc;
4622         }
4623
4624         return 0;
4625 }
4626
4627 static void __exit cnic_exit(void)
4628 {
4629         unregister_netdevice_notifier(&cnic_netdev_notifier);
4630         cnic_release();
4631         return;
4632 }
4633
4634 module_init(cnic_init);
4635 module_exit(cnic_exit);