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/bnx2x_reg.h"
  44 #include "bnx2x/bnx2x_fw_defs.h"
  45 #include "bnx2x/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 /* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
  63 static LIST_HEAD(cnic_dev_list);
  64 static LIST_HEAD(cnic_udev_list);
  65 static DEFINE_RWLOCK(cnic_dev_lock);
  66 static DEFINE_MUTEX(cnic_lock);
  67
  68 static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  69
  70 static int cnic_service_bnx2(void *, void *);
  71 static int cnic_service_bnx2x(void *, void *);
  72 static int cnic_ctl(void *, struct cnic_ctl_info *);
  73
  74 static struct cnic_ops cnic_bnx2_ops = {
  75         .cnic_owner     = THIS_MODULE,
  76         .cnic_handler   = cnic_service_bnx2,
  77         .cnic_ctl       = cnic_ctl,
  78 };
  79
  80 static struct cnic_ops cnic_bnx2x_ops = {
  81         .cnic_owner     = THIS_MODULE,
  82         .cnic_handler   = cnic_service_bnx2x,
  83         .cnic_ctl       = cnic_ctl,
  84 };
  85
  86 static struct workqueue_struct *cnic_wq;
  87
  88 static void cnic_shutdown_rings(struct cnic_dev *);
  89 static void cnic_init_rings(struct cnic_dev *);
  90 static int cnic_cm_set_pg(struct cnic_sock *);
  91
  92 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
  93 {
  94         struct cnic_uio_dev *udev = uinfo->priv;
  95         struct cnic_dev *dev;
  96
  97         if (!capable(CAP_NET_ADMIN))
  98                 return -EPERM;
  99
 100         if (udev->uio_dev != -1)
 101                 return -EBUSY;
 102
 103         rtnl_lock();
 104         dev = udev->dev;
 105
 106         if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 107                 rtnl_unlock();
 108                 return -ENODEV;
 109         }
 110
 111         udev->uio_dev = iminor(inode);
 112
 113         cnic_shutdown_rings(dev);
 114         cnic_init_rings(dev);
 115         rtnl_unlock();
 116
 117         return 0;
 118 }
 119
 120 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 121 {
 122         struct cnic_uio_dev *udev = uinfo->priv;
 123
 124         udev->uio_dev = -1;
 125         return 0;
 126 }
 127
 128 static inline void cnic_hold(struct cnic_dev *dev)
 129 {
 130         atomic_inc(&dev->ref_count);
 131 }
 132
 133 static inline void cnic_put(struct cnic_dev *dev)
 134 {
 135         atomic_dec(&dev->ref_count);
 136 }
 137
 138 static inline void csk_hold(struct cnic_sock *csk)
 139 {
 140         atomic_inc(&csk->ref_count);
 141 }
 142
 143 static inline void csk_put(struct cnic_sock *csk)
 144 {
 145         atomic_dec(&csk->ref_count);
 146 }
 147
 148 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 149 {
 150         struct cnic_dev *cdev;
 151
 152         read_lock(&cnic_dev_lock);
 153         list_for_each_entry(cdev, &cnic_dev_list, list) {
 154                 if (netdev == cdev->netdev) {
 155                         cnic_hold(cdev);
 156                         read_unlock(&cnic_dev_lock);
 157                         return cdev;
 158                 }
 159         }
 160         read_unlock(&cnic_dev_lock);
 161         return NULL;
 162 }
 163
 164 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 165 {
 166         atomic_inc(&ulp_ops->ref_count);
 167 }
 168
 169 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 170 {
 171         atomic_dec(&ulp_ops->ref_count);
 172 }
 173
 174 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 175 {
 176         struct cnic_local *cp = dev->cnic_priv;
 177         struct cnic_eth_dev *ethdev = cp->ethdev;
 178         struct drv_ctl_info info;
 179         struct drv_ctl_io *io = &info.data.io;
 180
 181         info.cmd = DRV_CTL_CTX_WR_CMD;
 182         io->cid_addr = cid_addr;
 183         io->offset = off;
 184         io->data = val;
 185         ethdev->drv_ctl(dev->netdev, &info);
 186 }
 187
 188 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 189 {
 190         struct cnic_local *cp = dev->cnic_priv;
 191         struct cnic_eth_dev *ethdev = cp->ethdev;
 192         struct drv_ctl_info info;
 193         struct drv_ctl_io *io = &info.data.io;
 194
 195         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 196         io->offset = off;
 197         io->dma_addr = addr;
 198         ethdev->drv_ctl(dev->netdev, &info);
 199 }
 200
 201 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 202 {
 203         struct cnic_local *cp = dev->cnic_priv;
 204         struct cnic_eth_dev *ethdev = cp->ethdev;
 205         struct drv_ctl_info info;
 206         struct drv_ctl_l2_ring *ring = &info.data.ring;
 207
 208         if (start)
 209                 info.cmd = DRV_CTL_START_L2_CMD;
 210         else
 211                 info.cmd = DRV_CTL_STOP_L2_CMD;
 212
 213         ring->cid = cid;
 214         ring->client_id = cl_id;
 215         ethdev->drv_ctl(dev->netdev, &info);
 216 }
 217
 218 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 219 {
 220         struct cnic_local *cp = dev->cnic_priv;
 221         struct cnic_eth_dev *ethdev = cp->ethdev;
 222         struct drv_ctl_info info;
 223         struct drv_ctl_io *io = &info.data.io;
 224
 225         info.cmd = DRV_CTL_IO_WR_CMD;
 226         io->offset = off;
 227         io->data = val;
 228         ethdev->drv_ctl(dev->netdev, &info);
 229 }
 230
 231 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 232 {
 233         struct cnic_local *cp = dev->cnic_priv;
 234         struct cnic_eth_dev *ethdev = cp->ethdev;
 235         struct drv_ctl_info info;
 236         struct drv_ctl_io *io = &info.data.io;
 237
 238         info.cmd = DRV_CTL_IO_RD_CMD;
 239         io->offset = off;
 240         ethdev->drv_ctl(dev->netdev, &info);
 241         return io->data;
 242 }
 243
 244 static int cnic_in_use(struct cnic_sock *csk)
 245 {
 246         return test_bit(SK_F_INUSE, &csk->flags);
 247 }
 248
 249 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
 250 {
 251         struct cnic_local *cp = dev->cnic_priv;
 252         struct cnic_eth_dev *ethdev = cp->ethdev;
 253         struct drv_ctl_info info;
 254
 255         info.cmd = cmd;
 256         info.data.credit.credit_count = count;
 257         ethdev->drv_ctl(dev->netdev, &info);
 258 }
 259
 260 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 261 {
 262         u32 i;
 263
 264         for (i = 0; i < cp->max_cid_space; i++) {
 265                 if (cp->ctx_tbl[i].cid == cid) {
 266                         *l5_cid = i;
 267                         return 0;
 268                 }
 269         }
 270         return -EINVAL;
 271 }
 272
 273 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 274                            struct cnic_sock *csk)
 275 {
 276         struct iscsi_path path_req;
 277         char *buf = NULL;
 278         u16 len = 0;
 279         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 280         struct cnic_ulp_ops *ulp_ops;
 281         struct cnic_uio_dev *udev = cp->udev;
 282         int rc = 0, retry = 0;
 283
 284         if (!udev || udev->uio_dev == -1)
 285                 return -ENODEV;
 286
 287         if (csk) {
 288                 len = sizeof(path_req);
 289                 buf = (char *) &path_req;
 290                 memset(&path_req, 0, len);
 291
 292                 msg_type = ISCSI_KEVENT_PATH_REQ;
 293                 path_req.handle = (u64) csk->l5_cid;
 294                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 295                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 296                                sizeof(struct in6_addr));
 297                         path_req.ip_addr_len = 16;
 298                 } else {
 299                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 300                                sizeof(struct in_addr));
 301                         path_req.ip_addr_len = 4;
 302                 }
 303                 path_req.vlan_id = csk->vlan_id;
 304                 path_req.pmtu = csk->mtu;
 305         }
 306
 307         while (retry < 3) {
 308                 rc = 0;
 309                 rcu_read_lock();
 310                 ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
 311                 if (ulp_ops)
 312                         rc = ulp_ops->iscsi_nl_send_msg(
 313                                 cp->ulp_handle[CNIC_ULP_ISCSI],
 314                                 msg_type, buf, len);
 315                 rcu_read_unlock();
 316                 if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
 317                         break;
 318
 319                 msleep(100);
 320                 retry++;
 321         }
 322         return 0;
 323 }
 324
 325 static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
 326
 327 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 328                                   char *buf, u16 len)
 329 {
 330         int rc = -EINVAL;
 331
 332         switch (msg_type) {
 333         case ISCSI_UEVENT_PATH_UPDATE: {
 334                 struct cnic_local *cp;
 335                 u32 l5_cid;
 336                 struct cnic_sock *csk;
 337                 struct iscsi_path *path_resp;
 338
 339                 if (len < sizeof(*path_resp))
 340                         break;
 341
 342                 path_resp = (struct iscsi_path *) buf;
 343                 cp = dev->cnic_priv;
 344                 l5_cid = (u32) path_resp->handle;
 345                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 346                         break;
 347
 348                 rcu_read_lock();
 349                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
 350                         rc = -ENODEV;
 351                         rcu_read_unlock();
 352                         break;
 353                 }
 354                 csk = &cp->csk_tbl[l5_cid];
 355                 csk_hold(csk);
 356                 if (cnic_in_use(csk) &&
 357                     test_bit(SK_F_CONNECT_START, &csk->flags)) {
 358
 359                         memcpy(csk->ha, path_resp->mac_addr, 6);
 360                         if (test_bit(SK_F_IPV6, &csk->flags))
 361                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 362                                        sizeof(struct in6_addr));
 363                         else
 364                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 365                                        sizeof(struct in_addr));
 366
 367                         if (is_valid_ether_addr(csk->ha)) {
 368                                 cnic_cm_set_pg(csk);
 369                         } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
 370                                 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 371
 372                                 cnic_cm_upcall(cp, csk,
 373                                         L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
 374                                 clear_bit(SK_F_CONNECT_START, &csk->flags);
 375                         }
 376                 }
 377                 csk_put(csk);
 378                 rcu_read_unlock();
 379                 rc = 0;
 380         }
 381         }
 382
 383         return rc;
 384 }
 385
 386 static int cnic_offld_prep(struct cnic_sock *csk)
 387 {
 388         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 389                 return 0;
 390
 391         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 392                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 393                 return 0;
 394         }
 395
 396         return 1;
 397 }
 398
 399 static int cnic_close_prep(struct cnic_sock *csk)
 400 {
 401         clear_bit(SK_F_CONNECT_START, &csk->flags);
 402         smp_mb__after_clear_bit();
 403
 404         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 405                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 406                         msleep(1);
 407
 408                 return 1;
 409         }
 410         return 0;
 411 }
 412
 413 static int cnic_abort_prep(struct cnic_sock *csk)
 414 {
 415         clear_bit(SK_F_CONNECT_START, &csk->flags);
 416         smp_mb__after_clear_bit();
 417
 418         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 419                 msleep(1);
 420
 421         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 422                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 423                 return 1;
 424         }
 425
 426         return 0;
 427 }
 428
 429 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 430 {
 431         struct cnic_dev *dev;
 432
 433         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 434                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 435                 return -EINVAL;
 436         }
 437         mutex_lock(&cnic_lock);
 438         if (cnic_ulp_tbl[ulp_type]) {
 439                 pr_err("%s: Type %d has already been registered\n",
 440                        __func__, ulp_type);
 441                 mutex_unlock(&cnic_lock);
 442                 return -EBUSY;
 443         }
 444
 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                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 450         }
 451         read_unlock(&cnic_dev_lock);
 452
 453         atomic_set(&ulp_ops->ref_count, 0);
 454         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 455         mutex_unlock(&cnic_lock);
 456
 457         /* Prevent race conditions with netdev_event */
 458         rtnl_lock();
 459         list_for_each_entry(dev, &cnic_dev_list, list) {
 460                 struct cnic_local *cp = dev->cnic_priv;
 461
 462                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 463                         ulp_ops->cnic_init(dev);
 464         }
 465         rtnl_unlock();
 466
 467         return 0;
 468 }
 469
 470 int cnic_unregister_driver(int ulp_type)
 471 {
 472         struct cnic_dev *dev;
 473         struct cnic_ulp_ops *ulp_ops;
 474         int i = 0;
 475
 476         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 477                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 478                 return -EINVAL;
 479         }
 480         mutex_lock(&cnic_lock);
 481         ulp_ops = cnic_ulp_tbl[ulp_type];
 482         if (!ulp_ops) {
 483                 pr_err("%s: Type %d has not been registered\n",
 484                        __func__, ulp_type);
 485                 goto out_unlock;
 486         }
 487         read_lock(&cnic_dev_lock);
 488         list_for_each_entry(dev, &cnic_dev_list, list) {
 489                 struct cnic_local *cp = dev->cnic_priv;
 490
 491                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 492                         pr_err("%s: Type %d still has devices registered\n",
 493                                __func__, ulp_type);
 494                         read_unlock(&cnic_dev_lock);
 495                         goto out_unlock;
 496                 }
 497         }
 498         read_unlock(&cnic_dev_lock);
 499
 500         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
 501
 502         mutex_unlock(&cnic_lock);
 503         synchronize_rcu();
 504         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 505                 msleep(100);
 506                 i++;
 507         }
 508
 509         if (atomic_read(&ulp_ops->ref_count) != 0)
 510                 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
 511         return 0;
 512
 513 out_unlock:
 514         mutex_unlock(&cnic_lock);
 515         return -EINVAL;
 516 }
 517
 518 static int cnic_start_hw(struct cnic_dev *);
 519 static void cnic_stop_hw(struct cnic_dev *);
 520
 521 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 522                                 void *ulp_ctx)
 523 {
 524         struct cnic_local *cp = dev->cnic_priv;
 525         struct cnic_ulp_ops *ulp_ops;
 526
 527         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 528                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 529                 return -EINVAL;
 530         }
 531         mutex_lock(&cnic_lock);
 532         if (cnic_ulp_tbl[ulp_type] == NULL) {
 533                 pr_err("%s: Driver with type %d has not been registered\n",
 534                        __func__, ulp_type);
 535                 mutex_unlock(&cnic_lock);
 536                 return -EAGAIN;
 537         }
 538         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 539                 pr_err("%s: Type %d has already been registered to this device\n",
 540                        __func__, ulp_type);
 541                 mutex_unlock(&cnic_lock);
 542                 return -EBUSY;
 543         }
 544
 545         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 546         cp->ulp_handle[ulp_type] = ulp_ctx;
 547         ulp_ops = cnic_ulp_tbl[ulp_type];
 548         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 549         cnic_hold(dev);
 550
 551         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 552                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 553                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 554
 555         mutex_unlock(&cnic_lock);
 556
 557         return 0;
 558
 559 }
 560 EXPORT_SYMBOL(cnic_register_driver);
 561
 562 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 563 {
 564         struct cnic_local *cp = dev->cnic_priv;
 565         int i = 0;
 566
 567         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 568                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 569                 return -EINVAL;
 570         }
 571         mutex_lock(&cnic_lock);
 572         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 573                 rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
 574                 cnic_put(dev);
 575         } else {
 576                 pr_err("%s: device not registered to this ulp type %d\n",
 577                        __func__, ulp_type);
 578                 mutex_unlock(&cnic_lock);
 579                 return -EINVAL;
 580         }
 581         mutex_unlock(&cnic_lock);
 582
 583         if (ulp_type == CNIC_ULP_ISCSI)
 584                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 585
 586         synchronize_rcu();
 587
 588         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 589                i < 20) {
 590                 msleep(100);
 591                 i++;
 592         }
 593         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 594                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 595
 596         return 0;
 597 }
 598 EXPORT_SYMBOL(cnic_unregister_driver);
 599
 600 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
 601 {
 602         id_tbl->start = start_id;
 603         id_tbl->max = size;
 604         id_tbl->next = 0;
 605         spin_lock_init(&id_tbl->lock);
 606         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 607         if (!id_tbl->table)
 608                 return -ENOMEM;
 609
 610         return 0;
 611 }
 612
 613 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 614 {
 615         kfree(id_tbl->table);
 616         id_tbl->table = NULL;
 617 }
 618
 619 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 620 {
 621         int ret = -1;
 622
 623         id -= id_tbl->start;
 624         if (id >= id_tbl->max)
 625                 return ret;
 626
 627         spin_lock(&id_tbl->lock);
 628         if (!test_bit(id, id_tbl->table)) {
 629                 set_bit(id, id_tbl->table);
 630                 ret = 0;
 631         }
 632         spin_unlock(&id_tbl->lock);
 633         return ret;
 634 }
 635
 636 /* Returns -1 if not successful */
 637 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 638 {
 639         u32 id;
 640
 641         spin_lock(&id_tbl->lock);
 642         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 643         if (id >= id_tbl->max) {
 644                 id = -1;
 645                 if (id_tbl->next != 0) {
 646                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 647                         if (id >= id_tbl->next)
 648                                 id = -1;
 649                 }
 650         }
 651
 652         if (id < id_tbl->max) {
 653                 set_bit(id, id_tbl->table);
 654                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 655                 id += id_tbl->start;
 656         }
 657
 658         spin_unlock(&id_tbl->lock);
 659
 660         return id;
 661 }
 662
 663 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 664 {
 665         if (id == -1)
 666                 return;
 667
 668         id -= id_tbl->start;
 669         if (id >= id_tbl->max)
 670                 return;
 671
 672         clear_bit(id, id_tbl->table);
 673 }
 674
 675 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 676 {
 677         int i;
 678
 679         if (!dma->pg_arr)
 680                 return;
 681
 682         for (i = 0; i < dma->num_pages; i++) {
 683                 if (dma->pg_arr[i]) {
 684                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
 685                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 686                         dma->pg_arr[i] = NULL;
 687                 }
 688         }
 689         if (dma->pgtbl) {
 690                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 691                                   dma->pgtbl, dma->pgtbl_map);
 692                 dma->pgtbl = NULL;
 693         }
 694         kfree(dma->pg_arr);
 695         dma->pg_arr = NULL;
 696         dma->num_pages = 0;
 697 }
 698
 699 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 700 {
 701         int i;
 702         __le32 *page_table = (__le32 *) dma->pgtbl;
 703
 704         for (i = 0; i < dma->num_pages; i++) {
 705                 /* Each entry needs to be in big endian format. */
 706                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 707                 page_table++;
 708                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 709                 page_table++;
 710         }
 711 }
 712
 713 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 714 {
 715         int i;
 716         __le32 *page_table = (__le32 *) dma->pgtbl;
 717
 718         for (i = 0; i < dma->num_pages; i++) {
 719                 /* Each entry needs to be in little endian format. */
 720                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 721                 page_table++;
 722                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 723                 page_table++;
 724         }
 725 }
 726
 727 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 728                           int pages, int use_pg_tbl)
 729 {
 730         int i, size;
 731         struct cnic_local *cp = dev->cnic_priv;
 732
 733         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 734         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 735         if (dma->pg_arr == NULL)
 736                 return -ENOMEM;
 737
 738         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 739         dma->num_pages = pages;
 740
 741         for (i = 0; i < pages; i++) {
 742                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 743                                                     BCM_PAGE_SIZE,
 744                                                     &dma->pg_map_arr[i],
 745                                                     GFP_ATOMIC);
 746                 if (dma->pg_arr[i] == NULL)
 747                         goto error;
 748         }
 749         if (!use_pg_tbl)
 750                 return 0;
 751
 752         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 753                           ~(BCM_PAGE_SIZE - 1);
 754         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 755                                         &dma->pgtbl_map, GFP_ATOMIC);
 756         if (dma->pgtbl == NULL)
 757                 goto error;
 758
 759         cp->setup_pgtbl(dev, dma);
 760
 761         return 0;
 762
 763 error:
 764         cnic_free_dma(dev, dma);
 765         return -ENOMEM;
 766 }
 767
 768 static void cnic_free_context(struct cnic_dev *dev)
 769 {
 770         struct cnic_local *cp = dev->cnic_priv;
 771         int i;
 772
 773         for (i = 0; i < cp->ctx_blks; i++) {
 774                 if (cp->ctx_arr[i].ctx) {
 775                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 776                                           cp->ctx_arr[i].ctx,
 777                                           cp->ctx_arr[i].mapping);
 778                         cp->ctx_arr[i].ctx = NULL;
 779                 }
 780         }
 781 }
 782
 783 static void __cnic_free_uio(struct cnic_uio_dev *udev)
 784 {
 785         uio_unregister_device(&udev->cnic_uinfo);
 786
 787         if (udev->l2_buf) {
 788                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 789                                   udev->l2_buf, udev->l2_buf_map);
 790                 udev->l2_buf = NULL;
 791         }
 792
 793         if (udev->l2_ring) {
 794                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 795                                   udev->l2_ring, udev->l2_ring_map);
 796                 udev->l2_ring = NULL;
 797         }
 798
 799         pci_dev_put(udev->pdev);
 800         kfree(udev);
 801 }
 802
 803 static void cnic_free_uio(struct cnic_uio_dev *udev)
 804 {
 805         if (!udev)
 806                 return;
 807
 808         write_lock(&cnic_dev_lock);
 809         list_del_init(&udev->list);
 810         write_unlock(&cnic_dev_lock);
 811         __cnic_free_uio(udev);
 812 }
 813
 814 static void cnic_free_resc(struct cnic_dev *dev)
 815 {
 816         struct cnic_local *cp = dev->cnic_priv;
 817         struct cnic_uio_dev *udev = cp->udev;
 818
 819         if (udev) {
 820                 udev->dev = NULL;
 821                 cp->udev = NULL;
 822         }
 823
 824         cnic_free_context(dev);
 825         kfree(cp->ctx_arr);
 826         cp->ctx_arr = NULL;
 827         cp->ctx_blks = 0;
 828
 829         cnic_free_dma(dev, &cp->gbl_buf_info);
 830         cnic_free_dma(dev, &cp->conn_buf_info);
 831         cnic_free_dma(dev, &cp->kwq_info);
 832         cnic_free_dma(dev, &cp->kwq_16_data_info);
 833         cnic_free_dma(dev, &cp->kcq2.dma);
 834         cnic_free_dma(dev, &cp->kcq1.dma);
 835         kfree(cp->iscsi_tbl);
 836         cp->iscsi_tbl = NULL;
 837         kfree(cp->ctx_tbl);
 838         cp->ctx_tbl = NULL;
 839
 840         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
 841         cnic_free_id_tbl(&cp->cid_tbl);
 842 }
 843
 844 static int cnic_alloc_context(struct cnic_dev *dev)
 845 {
 846         struct cnic_local *cp = dev->cnic_priv;
 847
 848         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 849                 int i, k, arr_size;
 850
 851                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 852                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 853                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 854                            sizeof(struct cnic_ctx);
 855                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 856                 if (cp->ctx_arr == NULL)
 857                         return -ENOMEM;
 858
 859                 k = 0;
 860                 for (i = 0; i < 2; i++) {
 861                         u32 j, reg, off, lo, hi;
 862
 863                         if (i == 0)
 864                                 off = BNX2_PG_CTX_MAP;
 865                         else
 866                                 off = BNX2_ISCSI_CTX_MAP;
 867
 868                         reg = cnic_reg_rd_ind(dev, off);
 869                         lo = reg >> 16;
 870                         hi = reg & 0xffff;
 871                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 872                                 cp->ctx_arr[k].cid = j;
 873                 }
 874
 875                 cp->ctx_blks = k;
 876                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 877                         cp->ctx_blks = 0;
 878                         return -ENOMEM;
 879                 }
 880
 881                 for (i = 0; i < cp->ctx_blks; i++) {
 882                         cp->ctx_arr[i].ctx =
 883                                 dma_alloc_coherent(&dev->pcidev->dev,
 884                                                    BCM_PAGE_SIZE,
 885                                                    &cp->ctx_arr[i].mapping,
 886                                                    GFP_KERNEL);
 887                         if (cp->ctx_arr[i].ctx == NULL)
 888                                 return -ENOMEM;
 889                 }
 890         }
 891         return 0;
 892 }
 893
 894 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info)
 895 {
 896         int err, i, is_bnx2 = 0;
 897         struct kcqe **kcq;
 898
 899         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags))
 900                 is_bnx2 = 1;
 901
 902         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, is_bnx2);
 903         if (err)
 904                 return err;
 905
 906         kcq = (struct kcqe **) info->dma.pg_arr;
 907         info->kcq = kcq;
 908
 909         if (is_bnx2)
 910                 return 0;
 911
 912         for (i = 0; i < KCQ_PAGE_CNT; i++) {
 913                 struct bnx2x_bd_chain_next *next =
 914                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
 915                 int j = i + 1;
 916
 917                 if (j >= KCQ_PAGE_CNT)
 918                         j = 0;
 919                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
 920                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
 921         }
 922         return 0;
 923 }
 924
 925 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
 926 {
 927         struct cnic_local *cp = dev->cnic_priv;
 928         struct cnic_uio_dev *udev;
 929
 930         read_lock(&cnic_dev_lock);
 931         list_for_each_entry(udev, &cnic_udev_list, list) {
 932                 if (udev->pdev == dev->pcidev) {
 933                         udev->dev = dev;
 934                         cp->udev = udev;
 935                         read_unlock(&cnic_dev_lock);
 936                         return 0;
 937                 }
 938         }
 939         read_unlock(&cnic_dev_lock);
 940
 941         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
 942         if (!udev)
 943                 return -ENOMEM;
 944
 945         udev->uio_dev = -1;
 946
 947         udev->dev = dev;
 948         udev->pdev = dev->pcidev;
 949         udev->l2_ring_size = pages * BCM_PAGE_SIZE;
 950         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
 951                                            &udev->l2_ring_map,
 952                                            GFP_KERNEL | __GFP_COMP);
 953         if (!udev->l2_ring)
 954                 goto err_udev;
 955
 956         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
 957         udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
 958         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
 959                                           &udev->l2_buf_map,
 960                                           GFP_KERNEL | __GFP_COMP);
 961         if (!udev->l2_buf)
 962                 goto err_dma;
 963
 964         write_lock(&cnic_dev_lock);
 965         list_add(&udev->list, &cnic_udev_list);
 966         write_unlock(&cnic_dev_lock);
 967
 968         pci_dev_get(udev->pdev);
 969
 970         cp->udev = udev;
 971
 972         return 0;
 973  err_dma:
 974         dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 975                           udev->l2_ring, udev->l2_ring_map);
 976  err_udev:
 977         kfree(udev);
 978         return -ENOMEM;
 979 }
 980
 981 static int cnic_init_uio(struct cnic_dev *dev)
 982 {
 983         struct cnic_local *cp = dev->cnic_priv;
 984         struct cnic_uio_dev *udev = cp->udev;
 985         struct uio_info *uinfo;
 986         int ret = 0;
 987
 988         if (!udev)
 989                 return -ENOMEM;
 990
 991         uinfo = &udev->cnic_uinfo;
 992
 993         uinfo->mem[0].addr = dev->netdev->base_addr;
 994         uinfo->mem[0].internal_addr = dev->regview;
 995         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
 996         uinfo->mem[0].memtype = UIO_MEM_PHYS;
 997
 998         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
 999                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1000                                         PAGE_MASK;
1001                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1002                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1003                 else
1004                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1005
1006                 uinfo->name = "bnx2_cnic";
1007         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1008                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1009                         PAGE_MASK;
1010                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1011
1012                 uinfo->name = "bnx2x_cnic";
1013         }
1014
1015         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1016
1017         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1018         uinfo->mem[2].size = udev->l2_ring_size;
1019         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1020
1021         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1022         uinfo->mem[3].size = udev->l2_buf_size;
1023         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1024
1025         uinfo->version = CNIC_MODULE_VERSION;
1026         uinfo->irq = UIO_IRQ_CUSTOM;
1027
1028         uinfo->open = cnic_uio_open;
1029         uinfo->release = cnic_uio_close;
1030
1031         if (udev->uio_dev == -1) {
1032                 if (!uinfo->priv) {
1033                         uinfo->priv = udev;
1034
1035                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1036                 }
1037         } else {
1038                 cnic_init_rings(dev);
1039         }
1040
1041         return ret;
1042 }
1043
1044 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1045 {
1046         struct cnic_local *cp = dev->cnic_priv;
1047         int ret;
1048
1049         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1050         if (ret)
1051                 goto error;
1052         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1053
1054         ret = cnic_alloc_kcq(dev, &cp->kcq1);
1055         if (ret)
1056                 goto error;
1057
1058         ret = cnic_alloc_context(dev);
1059         if (ret)
1060                 goto error;
1061
1062         ret = cnic_alloc_uio_rings(dev, 2);
1063         if (ret)
1064                 goto error;
1065
1066         ret = cnic_init_uio(dev);
1067         if (ret)
1068                 goto error;
1069
1070         return 0;
1071
1072 error:
1073         cnic_free_resc(dev);
1074         return ret;
1075 }
1076
1077 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1078 {
1079         struct cnic_local *cp = dev->cnic_priv;
1080         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1081         int total_mem, blks, i;
1082
1083         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1084         blks = total_mem / ctx_blk_size;
1085         if (total_mem % ctx_blk_size)
1086                 blks++;
1087
1088         if (blks > cp->ethdev->ctx_tbl_len)
1089                 return -ENOMEM;
1090
1091         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1092         if (cp->ctx_arr == NULL)
1093                 return -ENOMEM;
1094
1095         cp->ctx_blks = blks;
1096         cp->ctx_blk_size = ctx_blk_size;
1097         if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1098                 cp->ctx_align = 0;
1099         else
1100                 cp->ctx_align = ctx_blk_size;
1101
1102         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1103
1104         for (i = 0; i < blks; i++) {
1105                 cp->ctx_arr[i].ctx =
1106                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1107                                            &cp->ctx_arr[i].mapping,
1108                                            GFP_KERNEL);
1109                 if (cp->ctx_arr[i].ctx == NULL)
1110                         return -ENOMEM;
1111
1112                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1113                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1114                                 cnic_free_context(dev);
1115                                 cp->ctx_blk_size += cp->ctx_align;
1116                                 i = -1;
1117                                 continue;
1118                         }
1119                 }
1120         }
1121         return 0;
1122 }
1123
1124 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1125 {
1126         struct cnic_local *cp = dev->cnic_priv;
1127         struct cnic_eth_dev *ethdev = cp->ethdev;
1128         u32 start_cid = ethdev->starting_cid;
1129         int i, j, n, ret, pages;
1130         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1131
1132         cp->iro_arr = ethdev->iro_arr;
1133
1134         cp->max_cid_space = MAX_ISCSI_TBL_SZ + BNX2X_FCOE_NUM_CONNECTIONS;
1135         cp->iscsi_start_cid = start_cid;
1136         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1137
1138         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
1139                 cp->max_cid_space += BNX2X_FCOE_NUM_CONNECTIONS;
1140                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1141                 if (!cp->fcoe_init_cid)
1142                         cp->fcoe_init_cid = 0x10;
1143         }
1144
1145         if (start_cid < BNX2X_ISCSI_START_CID) {
1146                 u32 delta = BNX2X_ISCSI_START_CID - start_cid;
1147
1148                 cp->iscsi_start_cid = BNX2X_ISCSI_START_CID;
1149                 cp->fcoe_start_cid += delta;
1150                 cp->max_cid_space += delta;
1151         }
1152
1153         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1154                                 GFP_KERNEL);
1155         if (!cp->iscsi_tbl)
1156                 goto error;
1157
1158         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1159                                 cp->max_cid_space, GFP_KERNEL);
1160         if (!cp->ctx_tbl)
1161                 goto error;
1162
1163         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1164                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1165                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1166         }
1167
1168         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1169                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1170
1171         pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1172                 PAGE_SIZE;
1173
1174         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1175         if (ret)
1176                 return -ENOMEM;
1177
1178         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1179         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1180                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1181
1182                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1183                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1184                                                    off;
1185
1186                 if ((i % n) == (n - 1))
1187                         j++;
1188         }
1189
1190         ret = cnic_alloc_kcq(dev, &cp->kcq1);
1191         if (ret)
1192                 goto error;
1193
1194         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
1195                 ret = cnic_alloc_kcq(dev, &cp->kcq2);
1196                 if (ret)
1197                         goto error;
1198         }
1199
1200         pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
1201                            BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
1202         ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
1203         if (ret)
1204                 goto error;
1205
1206         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1207         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1208         if (ret)
1209                 goto error;
1210
1211         ret = cnic_alloc_bnx2x_context(dev);
1212         if (ret)
1213                 goto error;
1214
1215         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1216
1217         cp->l2_rx_ring_size = 15;
1218
1219         ret = cnic_alloc_uio_rings(dev, 4);
1220         if (ret)
1221                 goto error;
1222
1223         ret = cnic_init_uio(dev);
1224         if (ret)
1225                 goto error;
1226
1227         return 0;
1228
1229 error:
1230         cnic_free_resc(dev);
1231         return -ENOMEM;
1232 }
1233
1234 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1235 {
1236         return cp->max_kwq_idx -
1237                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1238 }
1239
1240 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1241                                   u32 num_wqes)
1242 {
1243         struct cnic_local *cp = dev->cnic_priv;
1244         struct kwqe *prod_qe;
1245         u16 prod, sw_prod, i;
1246
1247         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1248                 return -EAGAIN;         /* bnx2 is down */
1249
1250         spin_lock_bh(&cp->cnic_ulp_lock);
1251         if (num_wqes > cnic_kwq_avail(cp) &&
1252             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1253                 spin_unlock_bh(&cp->cnic_ulp_lock);
1254                 return -EAGAIN;
1255         }
1256
1257         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1258
1259         prod = cp->kwq_prod_idx;
1260         sw_prod = prod & MAX_KWQ_IDX;
1261         for (i = 0; i < num_wqes; i++) {
1262                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1263                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1264                 prod++;
1265                 sw_prod = prod & MAX_KWQ_IDX;
1266         }
1267         cp->kwq_prod_idx = prod;
1268
1269         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1270
1271         spin_unlock_bh(&cp->cnic_ulp_lock);
1272         return 0;
1273 }
1274
1275 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1276                                    union l5cm_specific_data *l5_data)
1277 {
1278         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1279         dma_addr_t map;
1280
1281         map = ctx->kwqe_data_mapping;
1282         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1283         l5_data->phy_address.hi = (u64) map >> 32;
1284         return ctx->kwqe_data;
1285 }
1286
1287 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1288                                 u32 type, union l5cm_specific_data *l5_data)
1289 {
1290         struct cnic_local *cp = dev->cnic_priv;
1291         struct l5cm_spe kwqe;
1292         struct kwqe_16 *kwq[1];
1293         u16 type_16;
1294         int ret;
1295
1296         kwqe.hdr.conn_and_cmd_data =
1297                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1298                              BNX2X_HW_CID(cp, cid)));
1299
1300         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1301         type_16 |= (cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1302                    SPE_HDR_FUNCTION_ID;
1303
1304         kwqe.hdr.type = cpu_to_le16(type_16);
1305         kwqe.hdr.reserved1 = 0;
1306         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1307         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1308
1309         kwq[0] = (struct kwqe_16 *) &kwqe;
1310
1311         spin_lock_bh(&cp->cnic_ulp_lock);
1312         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1313         spin_unlock_bh(&cp->cnic_ulp_lock);
1314
1315         if (ret == 1)
1316                 return 0;
1317
1318         return -EBUSY;
1319 }
1320
1321 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1322                                    struct kcqe *cqes[], u32 num_cqes)
1323 {
1324         struct cnic_local *cp = dev->cnic_priv;
1325         struct cnic_ulp_ops *ulp_ops;
1326
1327         rcu_read_lock();
1328         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1329         if (likely(ulp_ops)) {
1330                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1331                                           cqes, num_cqes);
1332         }
1333         rcu_read_unlock();
1334 }
1335
1336 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1337 {
1338         struct cnic_local *cp = dev->cnic_priv;
1339         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1340         int hq_bds, pages;
1341         u32 pfid = cp->pfid;
1342
1343         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1344         cp->num_ccells = req1->num_ccells_per_conn;
1345         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1346                               cp->num_iscsi_tasks;
1347         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1348                         BNX2X_ISCSI_R2TQE_SIZE;
1349         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1350         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1351         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1352         cp->num_cqs = req1->num_cqs;
1353
1354         if (!dev->max_iscsi_conn)
1355                 return 0;
1356
1357         /* init Tstorm RAM */
1358         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1359                   req1->rq_num_wqes);
1360         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1361                   PAGE_SIZE);
1362         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1363                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1364         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1365                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1366                   req1->num_tasks_per_conn);
1367
1368         /* init Ustorm RAM */
1369         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1370                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1371                   req1->rq_buffer_size);
1372         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1373                   PAGE_SIZE);
1374         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1375                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1376         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1377                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1378                   req1->num_tasks_per_conn);
1379         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1380                   req1->rq_num_wqes);
1381         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1382                   req1->cq_num_wqes);
1383         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1384                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1385
1386         /* init Xstorm RAM */
1387         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1388                   PAGE_SIZE);
1389         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1390                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1391         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1392                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1393                   req1->num_tasks_per_conn);
1394         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1395                   hq_bds);
1396         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1397                   req1->num_tasks_per_conn);
1398         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1399                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1400
1401         /* init Cstorm RAM */
1402         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1403                   PAGE_SIZE);
1404         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1405                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1406         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1407                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1408                   req1->num_tasks_per_conn);
1409         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1410                   req1->cq_num_wqes);
1411         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1412                   hq_bds);
1413
1414         return 0;
1415 }
1416
1417 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1418 {
1419         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1420         struct cnic_local *cp = dev->cnic_priv;
1421         u32 pfid = cp->pfid;
1422         struct iscsi_kcqe kcqe;
1423         struct kcqe *cqes[1];
1424
1425         memset(&kcqe, 0, sizeof(kcqe));
1426         if (!dev->max_iscsi_conn) {
1427                 kcqe.completion_status =
1428                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1429                 goto done;
1430         }
1431
1432         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1433                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1434         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1435                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1436                 req2->error_bit_map[1]);
1437
1438         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1439                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1440         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1441                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1442         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1443                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1444                 req2->error_bit_map[1]);
1445
1446         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1447                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1448
1449         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1450
1451 done:
1452         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1453         cqes[0] = (struct kcqe *) &kcqe;
1454         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1455
1456         return 0;
1457 }
1458
1459 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1460 {
1461         struct cnic_local *cp = dev->cnic_priv;
1462         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1463
1464         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1465                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1466
1467                 cnic_free_dma(dev, &iscsi->hq_info);
1468                 cnic_free_dma(dev, &iscsi->r2tq_info);
1469                 cnic_free_dma(dev, &iscsi->task_array_info);
1470                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1471         } else {
1472                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1473         }
1474
1475         ctx->cid = 0;
1476 }
1477
1478 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1479 {
1480         u32 cid;
1481         int ret, pages;
1482         struct cnic_local *cp = dev->cnic_priv;
1483         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1484         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1485
1486         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1487                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1488                 if (cid == -1) {
1489                         ret = -ENOMEM;
1490                         goto error;
1491                 }
1492                 ctx->cid = cid;
1493                 return 0;
1494         }
1495
1496         cid = cnic_alloc_new_id(&cp->cid_tbl);
1497         if (cid == -1) {
1498                 ret = -ENOMEM;
1499                 goto error;
1500         }
1501
1502         ctx->cid = cid;
1503         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1504
1505         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1506         if (ret)
1507                 goto error;
1508
1509         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1510         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1511         if (ret)
1512                 goto error;
1513
1514         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1515         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1516         if (ret)
1517                 goto error;
1518
1519         return 0;
1520
1521 error:
1522         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1523         return ret;
1524 }
1525
1526 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1527                                 struct regpair *ctx_addr)
1528 {
1529         struct cnic_local *cp = dev->cnic_priv;
1530         struct cnic_eth_dev *ethdev = cp->ethdev;
1531         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1532         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1533         unsigned long align_off = 0;
1534         dma_addr_t ctx_map;
1535         void *ctx;
1536
1537         if (cp->ctx_align) {
1538                 unsigned long mask = cp->ctx_align - 1;
1539
1540                 if (cp->ctx_arr[blk].mapping & mask)
1541                         align_off = cp->ctx_align -
1542                                     (cp->ctx_arr[blk].mapping & mask);
1543         }
1544         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1545                 (off * BNX2X_CONTEXT_MEM_SIZE);
1546         ctx = cp->ctx_arr[blk].ctx + align_off +
1547               (off * BNX2X_CONTEXT_MEM_SIZE);
1548         if (init)
1549                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1550
1551         ctx_addr->lo = ctx_map & 0xffffffff;
1552         ctx_addr->hi = (u64) ctx_map >> 32;
1553         return ctx;
1554 }
1555
1556 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1557                                 u32 num)
1558 {
1559         struct cnic_local *cp = dev->cnic_priv;
1560         struct iscsi_kwqe_conn_offload1 *req1 =
1561                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1562         struct iscsi_kwqe_conn_offload2 *req2 =
1563                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1564         struct iscsi_kwqe_conn_offload3 *req3;
1565         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1566         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1567         u32 cid = ctx->cid;
1568         u32 hw_cid = BNX2X_HW_CID(cp, cid);
1569         struct iscsi_context *ictx;
1570         struct regpair context_addr;
1571         int i, j, n = 2, n_max;
1572
1573         ctx->ctx_flags = 0;
1574         if (!req2->num_additional_wqes)
1575                 return -EINVAL;
1576
1577         n_max = req2->num_additional_wqes + 2;
1578
1579         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1580         if (ictx == NULL)
1581                 return -ENOMEM;
1582
1583         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1584
1585         ictx->xstorm_ag_context.hq_prod = 1;
1586
1587         ictx->xstorm_st_context.iscsi.first_burst_length =
1588                 ISCSI_DEF_FIRST_BURST_LEN;
1589         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1590                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1591         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1592                 req1->sq_page_table_addr_lo;
1593         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1594                 req1->sq_page_table_addr_hi;
1595         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1596         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1597         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1598                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1599         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1600                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1601         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1602                 iscsi->hq_info.pgtbl[0];
1603         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1604                 iscsi->hq_info.pgtbl[1];
1605         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1606                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1607         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1608                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1609         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1610                 iscsi->r2tq_info.pgtbl[0];
1611         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1612                 iscsi->r2tq_info.pgtbl[1];
1613         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1614                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1615         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1616                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1617         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1618                 BNX2X_ISCSI_PBL_NOT_CACHED;
1619         ictx->xstorm_st_context.iscsi.flags.flags |=
1620                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1621         ictx->xstorm_st_context.iscsi.flags.flags |=
1622                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1623
1624         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1625         /* TSTORM requires the base address of RQ DB & not PTE */
1626         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1627                 req2->rq_page_table_addr_lo & PAGE_MASK;
1628         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1629                 req2->rq_page_table_addr_hi;
1630         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1631         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1632         ictx->tstorm_st_context.tcp.flags2 |=
1633                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1634         ictx->tstorm_st_context.tcp.ooo_support_mode =
1635                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1636
1637         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1638
1639         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1640                 req2->rq_page_table_addr_lo;
1641         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1642                 req2->rq_page_table_addr_hi;
1643         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1644         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1645         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1646                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1647         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1648                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1649         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1650                 iscsi->r2tq_info.pgtbl[0];
1651         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1652                 iscsi->r2tq_info.pgtbl[1];
1653         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1654                 req1->cq_page_table_addr_lo;
1655         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1656                 req1->cq_page_table_addr_hi;
1657         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1658         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1659         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1660         ictx->ustorm_st_context.task_pbe_cache_index =
1661                 BNX2X_ISCSI_PBL_NOT_CACHED;
1662         ictx->ustorm_st_context.task_pdu_cache_index =
1663                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1664
1665         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1666                 if (j == 3) {
1667                         if (n >= n_max)
1668                                 break;
1669                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1670                         j = 0;
1671                 }
1672                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1673                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1674                         req3->qp_first_pte[j].hi;
1675                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1676                         req3->qp_first_pte[j].lo;
1677         }
1678
1679         ictx->ustorm_st_context.task_pbl_base.lo =
1680                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1681         ictx->ustorm_st_context.task_pbl_base.hi =
1682                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1683         ictx->ustorm_st_context.tce_phy_addr.lo =
1684                 iscsi->task_array_info.pgtbl[0];
1685         ictx->ustorm_st_context.tce_phy_addr.hi =
1686                 iscsi->task_array_info.pgtbl[1];
1687         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1688         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1689         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1690         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1691                 ISCSI_DEF_MAX_BURST_LEN;
1692         ictx->ustorm_st_context.negotiated_rx |=
1693                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1694                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1695
1696         ictx->cstorm_st_context.hq_pbl_base.lo =
1697                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1698         ictx->cstorm_st_context.hq_pbl_base.hi =
1699                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1700         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1701         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1702         ictx->cstorm_st_context.task_pbl_base.lo =
1703                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1704         ictx->cstorm_st_context.task_pbl_base.hi =
1705                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1706         /* CSTORM and USTORM initialization is different, CSTORM requires
1707          * CQ DB base & not PTE addr */
1708         ictx->cstorm_st_context.cq_db_base.lo =
1709                 req1->cq_page_table_addr_lo & PAGE_MASK;
1710         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1711         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1712         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1713         for (i = 0; i < cp->num_cqs; i++) {
1714                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1715                         ISCSI_INITIAL_SN;
1716                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1717                         ISCSI_INITIAL_SN;
1718         }
1719
1720         ictx->xstorm_ag_context.cdu_reserved =
1721                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1722                                        ISCSI_CONNECTION_TYPE);
1723         ictx->ustorm_ag_context.cdu_usage =
1724                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1725                                        ISCSI_CONNECTION_TYPE);
1726         return 0;
1727
1728 }
1729
1730 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1731                                    u32 num, int *work)
1732 {
1733         struct iscsi_kwqe_conn_offload1 *req1;
1734         struct iscsi_kwqe_conn_offload2 *req2;
1735         struct cnic_local *cp = dev->cnic_priv;
1736         struct cnic_context *ctx;
1737         struct iscsi_kcqe kcqe;
1738         struct kcqe *cqes[1];
1739         u32 l5_cid;
1740         int ret = 0;
1741
1742         if (num < 2) {
1743                 *work = num;
1744                 return -EINVAL;
1745         }
1746
1747         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1748         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1749         if ((num - 2) < req2->num_additional_wqes) {
1750                 *work = num;
1751                 return -EINVAL;
1752         }
1753         *work = 2 + req2->num_additional_wqes;
1754
1755         l5_cid = req1->iscsi_conn_id;
1756         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1757                 return -EINVAL;
1758
1759         memset(&kcqe, 0, sizeof(kcqe));
1760         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1761         kcqe.iscsi_conn_id = l5_cid;
1762         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1763
1764         ctx = &cp->ctx_tbl[l5_cid];
1765         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1766                 kcqe.completion_status =
1767                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1768                 goto done;
1769         }
1770
1771         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1772                 atomic_dec(&cp->iscsi_conn);
1773                 goto done;
1774         }
1775         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1776         if (ret) {
1777                 atomic_dec(&cp->iscsi_conn);
1778                 ret = 0;
1779                 goto done;
1780         }
1781         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1782         if (ret < 0) {
1783                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1784                 atomic_dec(&cp->iscsi_conn);
1785                 goto done;
1786         }
1787
1788         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1789         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1790
1791 done:
1792         cqes[0] = (struct kcqe *) &kcqe;
1793         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1794         return ret;
1795 }
1796
1797
1798 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1799 {
1800         struct cnic_local *cp = dev->cnic_priv;
1801         struct iscsi_kwqe_conn_update *req =
1802                 (struct iscsi_kwqe_conn_update *) kwqe;
1803         void *data;
1804         union l5cm_specific_data l5_data;
1805         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1806         int ret;
1807
1808         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1809                 return -EINVAL;
1810
1811         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1812         if (!data)
1813                 return -ENOMEM;
1814
1815         memcpy(data, kwqe, sizeof(struct kwqe));
1816
1817         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1818                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1819         return ret;
1820 }
1821
1822 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1823 {
1824         struct cnic_local *cp = dev->cnic_priv;
1825         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1826         union l5cm_specific_data l5_data;
1827         int ret;
1828         u32 hw_cid;
1829
1830         init_waitqueue_head(&ctx->waitq);
1831         ctx->wait_cond = 0;
1832         memset(&l5_data, 0, sizeof(l5_data));
1833         hw_cid = BNX2X_HW_CID(cp, ctx->cid);
1834
1835         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1836                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1837
1838         if (ret == 0)
1839                 wait_event(ctx->waitq, ctx->wait_cond);
1840
1841         return ret;
1842 }
1843
1844 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1845 {
1846         struct cnic_local *cp = dev->cnic_priv;
1847         struct iscsi_kwqe_conn_destroy *req =
1848                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1849         u32 l5_cid = req->reserved0;
1850         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1851         int ret = 0;
1852         struct iscsi_kcqe kcqe;
1853         struct kcqe *cqes[1];
1854
1855         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1856                 goto skip_cfc_delete;
1857
1858         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
1859                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
1860
1861                 if (delta > (2 * HZ))
1862                         delta = 0;
1863
1864                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
1865                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
1866                 goto destroy_reply;
1867         }
1868
1869         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
1870
1871 skip_cfc_delete:
1872         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1873
1874         atomic_dec(&cp->iscsi_conn);
1875         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1876
1877 destroy_reply:
1878         memset(&kcqe, 0, sizeof(kcqe));
1879         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1880         kcqe.iscsi_conn_id = l5_cid;
1881         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1882         kcqe.iscsi_conn_context_id = req->context_id;
1883
1884         cqes[0] = (struct kcqe *) &kcqe;
1885         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1886
1887         return ret;
1888 }
1889
1890 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1891                                       struct l4_kwq_connect_req1 *kwqe1,
1892                                       struct l4_kwq_connect_req3 *kwqe3,
1893                                       struct l5cm_active_conn_buffer *conn_buf)
1894 {
1895         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1896         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1897                 &conn_buf->xstorm_conn_buffer;
1898         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1899                 &conn_buf->tstorm_conn_buffer;
1900         struct regpair context_addr;
1901         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1902         struct in6_addr src_ip, dst_ip;
1903         int i;
1904         u32 *addrp;
1905
1906         addrp = (u32 *) &conn_addr->local_ip_addr;
1907         for (i = 0; i < 4; i++, addrp++)
1908                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1909
1910         addrp = (u32 *) &conn_addr->remote_ip_addr;
1911         for (i = 0; i < 4; i++, addrp++)
1912                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1913
1914         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1915
1916         xstorm_buf->context_addr.hi = context_addr.hi;
1917         xstorm_buf->context_addr.lo = context_addr.lo;
1918         xstorm_buf->mss = 0xffff;
1919         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1920         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1921                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1922         xstorm_buf->pseudo_header_checksum =
1923                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1924
1925         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1926                 tstorm_buf->params |=
1927                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1928         if (kwqe3->ka_timeout) {
1929                 tstorm_buf->ka_enable = 1;
1930                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1931                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1932                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1933         }
1934         tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1935         tstorm_buf->snd_buf = kwqe3->snd_buf;
1936         tstorm_buf->max_rt_time = 0xffffffff;
1937 }
1938
1939 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1940 {
1941         struct cnic_local *cp = dev->cnic_priv;
1942         u32 pfid = cp->pfid;
1943         u8 *mac = dev->mac_addr;
1944
1945         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1946                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
1947         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1948                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
1949         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1950                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
1951         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1952                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
1953         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1954                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
1955         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1956                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
1957
1958         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1959                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
1960         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1961                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1962                  mac[4]);
1963         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1964                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
1965         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1966                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1967                  mac[2]);
1968         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1969                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 2,
1970                  mac[1]);
1971         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1972                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 3,
1973                  mac[0]);
1974 }
1975
1976 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1977 {
1978         struct cnic_local *cp = dev->cnic_priv;
1979         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1980         u16 tstorm_flags = 0;
1981
1982         if (tcp_ts) {
1983                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1984                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1985         }
1986
1987         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1988                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
1989
1990         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1991                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
1992 }
1993
1994 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
1995                               u32 num, int *work)
1996 {
1997         struct cnic_local *cp = dev->cnic_priv;
1998         struct l4_kwq_connect_req1 *kwqe1 =
1999                 (struct l4_kwq_connect_req1 *) wqes[0];
2000         struct l4_kwq_connect_req3 *kwqe3;
2001         struct l5cm_active_conn_buffer *conn_buf;
2002         struct l5cm_conn_addr_params *conn_addr;
2003         union l5cm_specific_data l5_data;
2004         u32 l5_cid = kwqe1->pg_cid;
2005         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2006         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2007         int ret;
2008
2009         if (num < 2) {
2010                 *work = num;
2011                 return -EINVAL;
2012         }
2013
2014         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2015                 *work = 3;
2016         else
2017                 *work = 2;
2018
2019         if (num < *work) {
2020                 *work = num;
2021                 return -EINVAL;
2022         }
2023
2024         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2025                 netdev_err(dev->netdev, "conn_buf size too big\n");
2026                 return -ENOMEM;
2027         }
2028         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2029         if (!conn_buf)
2030                 return -ENOMEM;
2031
2032         memset(conn_buf, 0, sizeof(*conn_buf));
2033
2034         conn_addr = &conn_buf->conn_addr_buf;
2035         conn_addr->remote_addr_0 = csk->ha[0];
2036         conn_addr->remote_addr_1 = csk->ha[1];
2037         conn_addr->remote_addr_2 = csk->ha[2];
2038         conn_addr->remote_addr_3 = csk->ha[3];
2039         conn_addr->remote_addr_4 = csk->ha[4];
2040         conn_addr->remote_addr_5 = csk->ha[5];
2041
2042         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2043                 struct l4_kwq_connect_req2 *kwqe2 =
2044                         (struct l4_kwq_connect_req2 *) wqes[1];
2045
2046                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2047                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2048                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2049
2050                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2051                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2052                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2053                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2054         }
2055         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2056
2057         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2058         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2059         conn_addr->local_tcp_port = kwqe1->src_port;
2060         conn_addr->remote_tcp_port = kwqe1->dst_port;
2061
2062         conn_addr->pmtu = kwqe3->pmtu;
2063         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2064
2065         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2066                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2067
2068         cnic_bnx2x_set_tcp_timestamp(dev,
2069                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
2070
2071         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2072                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2073         if (!ret)
2074                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2075
2076         return ret;
2077 }
2078
2079 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2080 {
2081         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2082         union l5cm_specific_data l5_data;
2083         int ret;
2084
2085         memset(&l5_data, 0, sizeof(l5_data));
2086         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2087                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2088         return ret;
2089 }
2090
2091 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2092 {
2093         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2094         union l5cm_specific_data l5_data;
2095         int ret;
2096
2097         memset(&l5_data, 0, sizeof(l5_data));
2098         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2099                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2100         return ret;
2101 }
2102 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2103 {
2104         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2105         struct l4_kcq kcqe;
2106         struct kcqe *cqes[1];
2107
2108         memset(&kcqe, 0, sizeof(kcqe));
2109         kcqe.pg_host_opaque = req->host_opaque;
2110         kcqe.pg_cid = req->host_opaque;
2111         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2112         cqes[0] = (struct kcqe *) &kcqe;
2113         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2114         return 0;
2115 }
2116
2117 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2118 {
2119         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2120         struct l4_kcq kcqe;
2121         struct kcqe *cqes[1];
2122
2123         memset(&kcqe, 0, sizeof(kcqe));
2124         kcqe.pg_host_opaque = req->pg_host_opaque;
2125         kcqe.pg_cid = req->pg_cid;
2126         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2127         cqes[0] = (struct kcqe *) &kcqe;
2128         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2129         return 0;
2130 }
2131
2132 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2133 {
2134         struct fcoe_kwqe_stat *req;
2135         struct fcoe_stat_ramrod_params *fcoe_stat;
2136         union l5cm_specific_data l5_data;
2137         struct cnic_local *cp = dev->cnic_priv;
2138         int ret;
2139         u32 cid;
2140
2141         req = (struct fcoe_kwqe_stat *) kwqe;
2142         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2143
2144         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2145         if (!fcoe_stat)
2146                 return -ENOMEM;
2147
2148         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2149         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2150
2151         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT, cid,
2152                                   FCOE_CONNECTION_TYPE, &l5_data);
2153         return ret;
2154 }
2155
2156 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2157                                  u32 num, int *work)
2158 {
2159         int ret;
2160         struct cnic_local *cp = dev->cnic_priv;
2161         u32 cid;
2162         struct fcoe_init_ramrod_params *fcoe_init;
2163         struct fcoe_kwqe_init1 *req1;
2164         struct fcoe_kwqe_init2 *req2;
2165         struct fcoe_kwqe_init3 *req3;
2166         union l5cm_specific_data l5_data;
2167
2168         if (num < 3) {
2169                 *work = num;
2170                 return -EINVAL;
2171         }
2172         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2173         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2174         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2175         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2176                 *work = 1;
2177                 return -EINVAL;
2178         }
2179         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2180                 *work = 2;
2181                 return -EINVAL;
2182         }
2183
2184         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2185                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2186                 return -ENOMEM;
2187         }
2188         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2189         if (!fcoe_init)
2190                 return -ENOMEM;
2191
2192         memset(fcoe_init, 0, sizeof(*fcoe_init));
2193         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2194         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2195         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2196         fcoe_init->eq_addr.lo = cp->kcq2.dma.pg_map_arr[0] & 0xffffffff;
2197         fcoe_init->eq_addr.hi = (u64) cp->kcq2.dma.pg_map_arr[0] >> 32;
2198         fcoe_init->eq_next_page_addr.lo =
2199                 cp->kcq2.dma.pg_map_arr[1] & 0xffffffff;
2200         fcoe_init->eq_next_page_addr.hi =
2201                 (u64) cp->kcq2.dma.pg_map_arr[1] >> 32;
2202
2203         fcoe_init->sb_num = cp->status_blk_num;
2204         fcoe_init->eq_prod = MAX_KCQ_IDX;
2205         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2206         cp->kcq2.sw_prod_idx = 0;
2207
2208         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2209         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT, cid,
2210                                   FCOE_CONNECTION_TYPE, &l5_data);
2211         *work = 3;
2212         return ret;
2213 }
2214
2215 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2216                                  u32 num, int *work)
2217 {
2218         int ret = 0;
2219         u32 cid = -1, l5_cid;
2220         struct cnic_local *cp = dev->cnic_priv;
2221         struct fcoe_kwqe_conn_offload1 *req1;
2222         struct fcoe_kwqe_conn_offload2 *req2;
2223         struct fcoe_kwqe_conn_offload3 *req3;
2224         struct fcoe_kwqe_conn_offload4 *req4;
2225         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2226         struct cnic_context *ctx;
2227         struct fcoe_context *fctx;
2228         struct regpair ctx_addr;
2229         union l5cm_specific_data l5_data;
2230         struct fcoe_kcqe kcqe;
2231         struct kcqe *cqes[1];
2232
2233         if (num < 4) {
2234                 *work = num;
2235                 return -EINVAL;
2236         }
2237         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2238         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2239         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2240         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2241
2242         *work = 4;
2243
2244         l5_cid = req1->fcoe_conn_id;
2245         if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2246                 goto err_reply;
2247
2248         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2249
2250         ctx = &cp->ctx_tbl[l5_cid];
2251         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2252                 goto err_reply;
2253
2254         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2255         if (ret) {
2256                 ret = 0;
2257                 goto err_reply;
2258         }
2259         cid = ctx->cid;
2260
2261         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2262         if (fctx) {
2263                 u32 hw_cid = BNX2X_HW_CID(cp, cid);
2264                 u32 val;
2265
2266                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2267                                              FCOE_CONNECTION_TYPE);
2268                 fctx->xstorm_ag_context.cdu_reserved = val;
2269                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2270                                              FCOE_CONNECTION_TYPE);
2271                 fctx->ustorm_ag_context.cdu_usage = val;
2272         }
2273         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2274                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2275                 goto err_reply;
2276         }
2277         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2278         if (!fcoe_offload)
2279                 goto err_reply;
2280
2281         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2282         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2283         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2284         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2285         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2286
2287         cid = BNX2X_HW_CID(cp, cid);
2288         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2289                                   FCOE_CONNECTION_TYPE, &l5_data);
2290         if (!ret)
2291                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2292
2293         return ret;
2294
2295 err_reply:
2296         if (cid != -1)
2297                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2298
2299         memset(&kcqe, 0, sizeof(kcqe));
2300         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2301         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2302         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2303
2304         cqes[0] = (struct kcqe *) &kcqe;
2305         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2306         return ret;
2307 }
2308
2309 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2310 {
2311         struct fcoe_kwqe_conn_enable_disable *req;
2312         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2313         union l5cm_specific_data l5_data;
2314         int ret;
2315         u32 cid, l5_cid;
2316         struct cnic_local *cp = dev->cnic_priv;
2317
2318         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2319         cid = req->context_id;
2320         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2321
2322         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2323                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2324                 return -ENOMEM;
2325         }
2326         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2327         if (!fcoe_enable)
2328                 return -ENOMEM;
2329
2330         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2331         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2332         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2333                                   FCOE_CONNECTION_TYPE, &l5_data);
2334         return ret;
2335 }
2336
2337 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2338 {
2339         struct fcoe_kwqe_conn_enable_disable *req;
2340         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2341         union l5cm_specific_data l5_data;
2342         int ret;
2343         u32 cid, l5_cid;
2344         struct cnic_local *cp = dev->cnic_priv;
2345
2346         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2347         cid = req->context_id;
2348         l5_cid = req->conn_id;
2349         if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2350                 return -EINVAL;
2351
2352         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2353
2354         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2355                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2356                 return -ENOMEM;
2357         }
2358         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2359         if (!fcoe_disable)
2360                 return -ENOMEM;
2361
2362         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2363         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2364         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2365                                   FCOE_CONNECTION_TYPE, &l5_data);
2366         return ret;
2367 }
2368
2369 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2370 {
2371         struct fcoe_kwqe_conn_destroy *req;
2372         union l5cm_specific_data l5_data;
2373         int ret;
2374         u32 cid, l5_cid;
2375         struct cnic_local *cp = dev->cnic_priv;
2376         struct cnic_context *ctx;
2377         struct fcoe_kcqe kcqe;
2378         struct kcqe *cqes[1];
2379
2380         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2381         cid = req->context_id;
2382         l5_cid = req->conn_id;
2383         if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2384                 return -EINVAL;
2385
2386         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2387
2388         ctx = &cp->ctx_tbl[l5_cid];
2389
2390         init_waitqueue_head(&ctx->waitq);
2391         ctx->wait_cond = 0;
2392
2393         memset(&l5_data, 0, sizeof(l5_data));
2394         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2395                                   FCOE_CONNECTION_TYPE, &l5_data);
2396         if (ret == 0) {
2397                 wait_event(ctx->waitq, ctx->wait_cond);
2398                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2399                 queue_delayed_work(cnic_wq, &cp->delete_task,
2400                                    msecs_to_jiffies(2000));
2401         }
2402
2403         memset(&kcqe, 0, sizeof(kcqe));
2404         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2405         kcqe.fcoe_conn_id = req->conn_id;
2406         kcqe.fcoe_conn_context_id = cid;
2407
2408         cqes[0] = (struct kcqe *) &kcqe;
2409         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2410         return ret;
2411 }
2412
2413 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2414 {
2415         struct fcoe_kwqe_destroy *req;
2416         union l5cm_specific_data l5_data;
2417         struct cnic_local *cp = dev->cnic_priv;
2418         int ret;
2419         u32 cid;
2420
2421         req = (struct fcoe_kwqe_destroy *) kwqe;
2422         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2423
2424         memset(&l5_data, 0, sizeof(l5_data));
2425         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY, cid,
2426                                   FCOE_CONNECTION_TYPE, &l5_data);
2427         return ret;
2428 }
2429
2430 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2431                                          struct kwqe *wqes[], u32 num_wqes)
2432 {
2433         int i, work, ret;
2434         u32 opcode;
2435         struct kwqe *kwqe;
2436
2437         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2438                 return -EAGAIN;         /* bnx2 is down */
2439
2440         for (i = 0; i < num_wqes; ) {
2441                 kwqe = wqes[i];
2442                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2443                 work = 1;
2444
2445                 switch (opcode) {
2446                 case ISCSI_KWQE_OPCODE_INIT1:
2447                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2448                         break;
2449                 case ISCSI_KWQE_OPCODE_INIT2:
2450                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2451                         break;
2452                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2453                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2454                                                      num_wqes - i, &work);
2455                         break;
2456                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2457                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2458                         break;
2459                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2460                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2461                         break;
2462                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2463                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2464                                                  &work);
2465                         break;
2466                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2467                         ret = cnic_bnx2x_close(dev, kwqe);
2468                         break;
2469                 case L4_KWQE_OPCODE_VALUE_RESET:
2470                         ret = cnic_bnx2x_reset(dev, kwqe);
2471                         break;
2472                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2473                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2474                         break;
2475                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2476                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2477                         break;
2478                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2479                         ret = 0;
2480                         break;
2481                 default:
2482                         ret = 0;
2483                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2484                                    opcode);
2485                         break;
2486                 }
2487                 if (ret < 0)
2488                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2489                                    opcode);
2490                 i += work;
2491         }
2492         return 0;
2493 }
2494
2495 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2496                                         struct kwqe *wqes[], u32 num_wqes)
2497 {
2498         struct cnic_local *cp = dev->cnic_priv;
2499         int i, work, ret;
2500         u32 opcode;
2501         struct kwqe *kwqe;
2502
2503         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2504                 return -EAGAIN;         /* bnx2 is down */
2505
2506         if (BNX2X_CHIP_NUM(cp->chip_id) == BNX2X_CHIP_NUM_57710)
2507                 return -EINVAL;
2508
2509         for (i = 0; i < num_wqes; ) {
2510                 kwqe = wqes[i];
2511                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2512                 work = 1;
2513
2514                 switch (opcode) {
2515                 case FCOE_KWQE_OPCODE_INIT1:
2516                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2517                                                     num_wqes - i, &work);
2518                         break;
2519                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2520                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2521                                                     num_wqes - i, &work);
2522                         break;
2523                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2524                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2525                         break;
2526                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2527                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2528                         break;
2529                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2530                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2531                         break;
2532                 case FCOE_KWQE_OPCODE_DESTROY:
2533                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2534                         break;
2535                 case FCOE_KWQE_OPCODE_STAT:
2536                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2537                         break;
2538                 default:
2539                         ret = 0;
2540                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2541                                    opcode);
2542                         break;
2543                 }
2544                 if (ret < 0)
2545                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2546                                    opcode);
2547                 i += work;
2548         }
2549         return 0;
2550 }
2551
2552 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2553                                    u32 num_wqes)
2554 {
2555         int ret = -EINVAL;
2556         u32 layer_code;
2557
2558         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2559                 return -EAGAIN;         /* bnx2x is down */
2560
2561         if (!num_wqes)
2562                 return 0;
2563
2564         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2565         switch (layer_code) {
2566         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2567         case KWQE_FLAGS_LAYER_MASK_L4:
2568         case KWQE_FLAGS_LAYER_MASK_L2:
2569                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2570                 break;
2571
2572         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2573                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2574                 break;
2575         }
2576         return ret;
2577 }
2578
2579 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2580 {
2581         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2582                 return KCQE_FLAGS_LAYER_MASK_L4;
2583
2584         return opflag & KCQE_FLAGS_LAYER_MASK;
2585 }
2586
2587 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2588 {
2589         struct cnic_local *cp = dev->cnic_priv;
2590         int i, j, comp = 0;
2591
2592         i = 0;
2593         j = 1;
2594         while (num_cqes) {
2595                 struct cnic_ulp_ops *ulp_ops;
2596                 int ulp_type;
2597                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2598                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2599
2600                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2601                         comp++;
2602
2603                 while (j < num_cqes) {
2604                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2605
2606                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2607                                 break;
2608
2609                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2610                                 comp++;
2611                         j++;
2612                 }
2613
2614                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2615                         ulp_type = CNIC_ULP_RDMA;
2616                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2617                         ulp_type = CNIC_ULP_ISCSI;
2618                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2619                         ulp_type = CNIC_ULP_FCOE;
2620                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2621                         ulp_type = CNIC_ULP_L4;
2622                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2623                         goto end;
2624                 else {
2625                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2626                                    kcqe_op_flag);
2627                         goto end;
2628                 }
2629
2630                 rcu_read_lock();
2631                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2632                 if (likely(ulp_ops)) {
2633                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2634                                                   cp->completed_kcq + i, j);
2635                 }
2636                 rcu_read_unlock();
2637 end:
2638                 num_cqes -= j;
2639                 i += j;
2640                 j = 1;
2641         }
2642         if (unlikely(comp))
2643                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2644 }
2645
2646 static u16 cnic_bnx2_next_idx(u16 idx)
2647 {
2648         return idx + 1;
2649 }
2650
2651 static u16 cnic_bnx2_hw_idx(u16 idx)
2652 {
2653         return idx;
2654 }
2655
2656 static u16 cnic_bnx2x_next_idx(u16 idx)
2657 {
2658         idx++;
2659         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2660                 idx++;
2661
2662         return idx;
2663 }
2664
2665 static u16 cnic_bnx2x_hw_idx(u16 idx)
2666 {
2667         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2668                 idx++;
2669         return idx;
2670 }
2671
2672 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2673 {
2674         struct cnic_local *cp = dev->cnic_priv;
2675         u16 i, ri, hw_prod, last;
2676         struct kcqe *kcqe;
2677         int kcqe_cnt = 0, last_cnt = 0;
2678
2679         i = ri = last = info->sw_prod_idx;
2680         ri &= MAX_KCQ_IDX;
2681         hw_prod = *info->hw_prod_idx_ptr;
2682         hw_prod = cp->hw_idx(hw_prod);
2683
2684         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2685                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2686                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2687                 i = cp->next_idx(i);
2688                 ri = i & MAX_KCQ_IDX;
2689                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2690                         last_cnt = kcqe_cnt;
2691                         last = i;
2692                 }
2693         }
2694
2695         info->sw_prod_idx = last;
2696         return last_cnt;
2697 }
2698
2699 static int cnic_l2_completion(struct cnic_local *cp)
2700 {
2701         u16 hw_cons, sw_cons;
2702         struct cnic_uio_dev *udev = cp->udev;
2703         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2704                                         (udev->l2_ring + (2 * BCM_PAGE_SIZE));
2705         u32 cmd;
2706         int comp = 0;
2707
2708         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2709                 return 0;
2710
2711         hw_cons = *cp->rx_cons_ptr;
2712         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2713                 hw_cons++;
2714
2715         sw_cons = cp->rx_cons;
2716         while (sw_cons != hw_cons) {
2717                 u8 cqe_fp_flags;
2718
2719                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2720                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2721                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2722                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2723                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2724                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2725                             cmd == RAMROD_CMD_ID_ETH_HALT)
2726                                 comp++;
2727                 }
2728                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2729         }
2730         return comp;
2731 }
2732
2733 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2734 {
2735         u16 rx_cons, tx_cons;
2736         int comp = 0;
2737
2738         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2739                 return;
2740
2741         rx_cons = *cp->rx_cons_ptr;
2742         tx_cons = *cp->tx_cons_ptr;
2743         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2744                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2745                         comp = cnic_l2_completion(cp);
2746
2747                 cp->tx_cons = tx_cons;
2748                 cp->rx_cons = rx_cons;
2749
2750                 if (cp->udev)
2751                         uio_event_notify(&cp->udev->cnic_uinfo);
2752         }
2753         if (comp)
2754                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2755 }
2756
2757 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2758 {
2759         struct cnic_local *cp = dev->cnic_priv;
2760         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2761         int kcqe_cnt;
2762
2763         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2764
2765         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2766
2767                 service_kcqes(dev, kcqe_cnt);
2768
2769                 /* Tell compiler that status_blk fields can change. */
2770                 barrier();
2771                 if (status_idx != *cp->kcq1.status_idx_ptr) {
2772                         status_idx = (u16) *cp->kcq1.status_idx_ptr;
2773                         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2774                 } else
2775                         break;
2776         }
2777
2778         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2779
2780         cnic_chk_pkt_rings(cp);
2781
2782         return status_idx;
2783 }
2784
2785 static int cnic_service_bnx2(void *data, void *status_blk)
2786 {
2787         struct cnic_dev *dev = data;
2788
2789         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2790                 struct status_block *sblk = status_blk;
2791
2792                 return sblk->status_idx;
2793         }
2794
2795         return cnic_service_bnx2_queues(dev);
2796 }
2797
2798 static void cnic_service_bnx2_msix(unsigned long data)
2799 {
2800         struct cnic_dev *dev = (struct cnic_dev *) data;
2801         struct cnic_local *cp = dev->cnic_priv;
2802
2803         cp->last_status_idx = cnic_service_bnx2_queues(dev);
2804
2805         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2806                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2807 }
2808
2809 static void cnic_doirq(struct cnic_dev *dev)
2810 {
2811         struct cnic_local *cp = dev->cnic_priv;
2812
2813         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2814                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
2815
2816                 prefetch(cp->status_blk.gen);
2817                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2818
2819                 tasklet_schedule(&cp->cnic_irq_task);
2820         }
2821 }
2822
2823 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2824 {
2825         struct cnic_dev *dev = dev_instance;
2826         struct cnic_local *cp = dev->cnic_priv;
2827
2828         if (cp->ack_int)
2829                 cp->ack_int(dev);
2830
2831         cnic_doirq(dev);
2832
2833         return IRQ_HANDLED;
2834 }
2835
2836 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2837                                       u16 index, u8 op, u8 update)
2838 {
2839         struct cnic_local *cp = dev->cnic_priv;
2840         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2841                        COMMAND_REG_INT_ACK);
2842         struct igu_ack_register igu_ack;
2843
2844         igu_ack.status_block_index = index;
2845         igu_ack.sb_id_and_flags =
2846                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2847                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2848                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2849                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2850
2851         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2852 }
2853
2854 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
2855                             u16 index, u8 op, u8 update)
2856 {
2857         struct igu_regular cmd_data;
2858         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
2859
2860         cmd_data.sb_id_and_flags =
2861                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
2862                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
2863                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
2864                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
2865
2866
2867         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
2868 }
2869
2870 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2871 {
2872         struct cnic_local *cp = dev->cnic_priv;
2873
2874         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
2875                            IGU_INT_DISABLE, 0);
2876 }
2877
2878 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
2879 {
2880         struct cnic_local *cp = dev->cnic_priv;
2881
2882         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
2883                         IGU_INT_DISABLE, 0);
2884 }
2885
2886 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
2887 {
2888         u32 last_status = *info->status_idx_ptr;
2889         int kcqe_cnt;
2890
2891         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
2892
2893                 service_kcqes(dev, kcqe_cnt);
2894
2895                 /* Tell compiler that sblk fields can change. */
2896                 barrier();
2897                 if (last_status == *info->status_idx_ptr)
2898                         break;
2899
2900                 last_status = *info->status_idx_ptr;
2901         }
2902         return last_status;
2903 }
2904
2905 static void cnic_service_bnx2x_bh(unsigned long data)
2906 {
2907         struct cnic_dev *dev = (struct cnic_dev *) data;
2908         struct cnic_local *cp = dev->cnic_priv;
2909         u32 status_idx;
2910
2911         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2912                 return;
2913
2914         status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
2915
2916         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
2917
2918         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
2919                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
2920
2921                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
2922                           MAX_KCQ_IDX);
2923
2924                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
2925                                 status_idx, IGU_INT_ENABLE, 1);
2926         } else {
2927                 cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
2928                                    status_idx, IGU_INT_ENABLE, 1);
2929         }
2930 }
2931
2932 static int cnic_service_bnx2x(void *data, void *status_blk)
2933 {
2934         struct cnic_dev *dev = data;
2935         struct cnic_local *cp = dev->cnic_priv;
2936
2937         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
2938                 cnic_doirq(dev);
2939
2940         cnic_chk_pkt_rings(cp);
2941
2942         return 0;
2943 }
2944
2945 static void cnic_ulp_stop(struct cnic_dev *dev)
2946 {
2947         struct cnic_local *cp = dev->cnic_priv;
2948         int if_type;
2949
2950         cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2951
2952         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2953                 struct cnic_ulp_ops *ulp_ops;
2954
2955                 mutex_lock(&cnic_lock);
2956                 ulp_ops = cp->ulp_ops[if_type];
2957                 if (!ulp_ops) {
2958                         mutex_unlock(&cnic_lock);
2959                         continue;
2960                 }
2961                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2962                 mutex_unlock(&cnic_lock);
2963
2964                 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2965                         ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2966
2967                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2968         }
2969 }
2970
2971 static void cnic_ulp_start(struct cnic_dev *dev)
2972 {
2973         struct cnic_local *cp = dev->cnic_priv;
2974         int if_type;
2975
2976         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2977                 struct cnic_ulp_ops *ulp_ops;
2978
2979                 mutex_lock(&cnic_lock);
2980                 ulp_ops = cp->ulp_ops[if_type];
2981                 if (!ulp_ops || !ulp_ops->cnic_start) {
2982                         mutex_unlock(&cnic_lock);
2983                         continue;
2984                 }
2985                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2986                 mutex_unlock(&cnic_lock);
2987
2988                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2989                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2990
2991                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2992         }
2993 }
2994
2995 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
2996 {
2997         struct cnic_dev *dev = data;
2998
2999         switch (info->cmd) {
3000         case CNIC_CTL_STOP_CMD:
3001                 cnic_hold(dev);
3002
3003                 cnic_ulp_stop(dev);
3004                 cnic_stop_hw(dev);
3005
3006                 cnic_put(dev);
3007                 break;
3008         case CNIC_CTL_START_CMD:
3009                 cnic_hold(dev);
3010
3011                 if (!cnic_start_hw(dev))
3012                         cnic_ulp_start(dev);
3013
3014                 cnic_put(dev);
3015                 break;
3016         case CNIC_CTL_COMPLETION_CMD: {
3017                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
3018                 u32 l5_cid;
3019                 struct cnic_local *cp = dev->cnic_priv;
3020
3021                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3022                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3023
3024                         ctx->wait_cond = 1;
3025                         wake_up(&ctx->waitq);
3026                 }
3027                 break;
3028         }
3029         default:
3030                 return -EINVAL;
3031         }
3032         return 0;
3033 }
3034
3035 static void cnic_ulp_init(struct cnic_dev *dev)
3036 {
3037         int i;
3038         struct cnic_local *cp = dev->cnic_priv;
3039
3040         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3041                 struct cnic_ulp_ops *ulp_ops;
3042
3043                 mutex_lock(&cnic_lock);
3044                 ulp_ops = cnic_ulp_tbl[i];
3045                 if (!ulp_ops || !ulp_ops->cnic_init) {
3046                         mutex_unlock(&cnic_lock);
3047                         continue;
3048                 }
3049                 ulp_get(ulp_ops);
3050                 mutex_unlock(&cnic_lock);
3051
3052                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3053                         ulp_ops->cnic_init(dev);
3054
3055                 ulp_put(ulp_ops);
3056         }
3057 }
3058
3059 static void cnic_ulp_exit(struct cnic_dev *dev)
3060 {
3061         int i;
3062         struct cnic_local *cp = dev->cnic_priv;
3063
3064         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3065                 struct cnic_ulp_ops *ulp_ops;
3066
3067                 mutex_lock(&cnic_lock);
3068                 ulp_ops = cnic_ulp_tbl[i];
3069                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3070                         mutex_unlock(&cnic_lock);
3071                         continue;
3072                 }
3073                 ulp_get(ulp_ops);
3074                 mutex_unlock(&cnic_lock);
3075
3076                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3077                         ulp_ops->cnic_exit(dev);
3078
3079                 ulp_put(ulp_ops);
3080         }
3081 }
3082
3083 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3084 {
3085         struct cnic_dev *dev = csk->dev;
3086         struct l4_kwq_offload_pg *l4kwqe;
3087         struct kwqe *wqes[1];
3088
3089         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3090         memset(l4kwqe, 0, sizeof(*l4kwqe));
3091         wqes[0] = (struct kwqe *) l4kwqe;
3092
3093         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3094         l4kwqe->flags =
3095                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3096         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3097
3098         l4kwqe->da0 = csk->ha[0];
3099         l4kwqe->da1 = csk->ha[1];
3100         l4kwqe->da2 = csk->ha[2];
3101         l4kwqe->da3 = csk->ha[3];
3102         l4kwqe->da4 = csk->ha[4];
3103         l4kwqe->da5 = csk->ha[5];
3104
3105         l4kwqe->sa0 = dev->mac_addr[0];
3106         l4kwqe->sa1 = dev->mac_addr[1];
3107         l4kwqe->sa2 = dev->mac_addr[2];
3108         l4kwqe->sa3 = dev->mac_addr[3];
3109         l4kwqe->sa4 = dev->mac_addr[4];
3110         l4kwqe->sa5 = dev->mac_addr[5];
3111
3112         l4kwqe->etype = ETH_P_IP;
3113         l4kwqe->ipid_start = DEF_IPID_START;
3114         l4kwqe->host_opaque = csk->l5_cid;
3115
3116         if (csk->vlan_id) {
3117                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3118                 l4kwqe->vlan_tag = csk->vlan_id;
3119                 l4kwqe->l2hdr_nbytes += 4;
3120         }
3121
3122         return dev->submit_kwqes(dev, wqes, 1);
3123 }
3124
3125 static int cnic_cm_update_pg(struct cnic_sock *csk)
3126 {
3127         struct cnic_dev *dev = csk->dev;
3128         struct l4_kwq_update_pg *l4kwqe;
3129         struct kwqe *wqes[1];
3130
3131         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3132         memset(l4kwqe, 0, sizeof(*l4kwqe));
3133         wqes[0] = (struct kwqe *) l4kwqe;
3134
3135         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3136         l4kwqe->flags =
3137                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3138         l4kwqe->pg_cid = csk->pg_cid;
3139
3140         l4kwqe->da0 = csk->ha[0];
3141         l4kwqe->da1 = csk->ha[1];
3142         l4kwqe->da2 = csk->ha[2];
3143         l4kwqe->da3 = csk->ha[3];
3144         l4kwqe->da4 = csk->ha[4];
3145         l4kwqe->da5 = csk->ha[5];
3146
3147         l4kwqe->pg_host_opaque = csk->l5_cid;
3148         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3149
3150         return dev->submit_kwqes(dev, wqes, 1);
3151 }
3152
3153 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3154 {
3155         struct cnic_dev *dev = csk->dev;
3156         struct l4_kwq_upload *l4kwqe;
3157         struct kwqe *wqes[1];
3158
3159         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3160         memset(l4kwqe, 0, sizeof(*l4kwqe));
3161         wqes[0] = (struct kwqe *) l4kwqe;
3162
3163         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3164         l4kwqe->flags =
3165                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3166         l4kwqe->cid = csk->pg_cid;
3167
3168         return dev->submit_kwqes(dev, wqes, 1);
3169 }
3170
3171 static int cnic_cm_conn_req(struct cnic_sock *csk)
3172 {
3173         struct cnic_dev *dev = csk->dev;
3174         struct l4_kwq_connect_req1 *l4kwqe1;
3175         struct l4_kwq_connect_req2 *l4kwqe2;
3176         struct l4_kwq_connect_req3 *l4kwqe3;
3177         struct kwqe *wqes[3];
3178         u8 tcp_flags = 0;
3179         int num_wqes = 2;
3180
3181         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3182         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3183         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3184         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3185         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3186         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3187
3188         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3189         l4kwqe3->flags =
3190                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3191         l4kwqe3->ka_timeout = csk->ka_timeout;
3192         l4kwqe3->ka_interval = csk->ka_interval;
3193         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3194         l4kwqe3->tos = csk->tos;
3195         l4kwqe3->ttl = csk->ttl;
3196         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3197         l4kwqe3->pmtu = csk->mtu;
3198         l4kwqe3->rcv_buf = csk->rcv_buf;
3199         l4kwqe3->snd_buf = csk->snd_buf;
3200         l4kwqe3->seed = csk->seed;
3201
3202         wqes[0] = (struct kwqe *) l4kwqe1;
3203         if (test_bit(SK_F_IPV6, &csk->flags)) {
3204                 wqes[1] = (struct kwqe *) l4kwqe2;
3205                 wqes[2] = (struct kwqe *) l4kwqe3;
3206                 num_wqes = 3;
3207
3208                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3209                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3210                 l4kwqe2->flags =
3211                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3212                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3213                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3214                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3215                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3216                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3217                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3218                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3219                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3220                                sizeof(struct tcphdr);
3221         } else {
3222                 wqes[1] = (struct kwqe *) l4kwqe3;
3223                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3224                                sizeof(struct tcphdr);
3225         }
3226
3227         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3228         l4kwqe1->flags =
3229                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3230                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3231         l4kwqe1->cid = csk->cid;
3232         l4kwqe1->pg_cid = csk->pg_cid;
3233         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3234         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3235         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3236         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3237         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3238                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3239         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3240                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3241         if (csk->tcp_flags & SK_TCP_NAGLE)
3242                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3243         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3244                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3245         if (csk->tcp_flags & SK_TCP_SACK)
3246                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3247         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3248                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3249
3250         l4kwqe1->tcp_flags = tcp_flags;
3251
3252         return dev->submit_kwqes(dev, wqes, num_wqes);
3253 }
3254
3255 static int cnic_cm_close_req(struct cnic_sock *csk)
3256 {
3257         struct cnic_dev *dev = csk->dev;
3258         struct l4_kwq_close_req *l4kwqe;
3259         struct kwqe *wqes[1];
3260
3261         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3262         memset(l4kwqe, 0, sizeof(*l4kwqe));
3263         wqes[0] = (struct kwqe *) l4kwqe;
3264
3265         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3266         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3267         l4kwqe->cid = csk->cid;
3268
3269         return dev->submit_kwqes(dev, wqes, 1);
3270 }
3271
3272 static int cnic_cm_abort_req(struct cnic_sock *csk)
3273 {
3274         struct cnic_dev *dev = csk->dev;
3275         struct l4_kwq_reset_req *l4kwqe;
3276         struct kwqe *wqes[1];
3277
3278         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3279         memset(l4kwqe, 0, sizeof(*l4kwqe));
3280         wqes[0] = (struct kwqe *) l4kwqe;
3281
3282         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3283         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3284         l4kwqe->cid = csk->cid;
3285
3286         return dev->submit_kwqes(dev, wqes, 1);
3287 }
3288
3289 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3290                           u32 l5_cid, struct cnic_sock **csk, void *context)
3291 {
3292         struct cnic_local *cp = dev->cnic_priv;
3293         struct cnic_sock *csk1;
3294
3295         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3296                 return -EINVAL;
3297
3298         if (cp->ctx_tbl) {
3299                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3300
3301                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3302                         return -EAGAIN;
3303         }
3304
3305         csk1 = &cp->csk_tbl[l5_cid];
3306         if (atomic_read(&csk1->ref_count))
3307                 return -EAGAIN;
3308
3309         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3310                 return -EBUSY;
3311
3312         csk1->dev = dev;
3313         csk1->cid = cid;
3314         csk1->l5_cid = l5_cid;
3315         csk1->ulp_type = ulp_type;
3316         csk1->context = context;
3317
3318         csk1->ka_timeout = DEF_KA_TIMEOUT;
3319         csk1->ka_interval = DEF_KA_INTERVAL;
3320         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3321         csk1->tos = DEF_TOS;
3322         csk1->ttl = DEF_TTL;
3323         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3324         csk1->rcv_buf = DEF_RCV_BUF;
3325         csk1->snd_buf = DEF_SND_BUF;
3326         csk1->seed = DEF_SEED;
3327
3328         *csk = csk1;
3329         return 0;
3330 }
3331
3332 static void cnic_cm_cleanup(struct cnic_sock *csk)
3333 {
3334         if (csk->src_port) {
3335                 struct cnic_dev *dev = csk->dev;
3336                 struct cnic_local *cp = dev->cnic_priv;
3337
3338                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3339                 csk->src_port = 0;
3340         }
3341 }
3342
3343 static void cnic_close_conn(struct cnic_sock *csk)
3344 {
3345         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3346                 cnic_cm_upload_pg(csk);
3347                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3348         }
3349         cnic_cm_cleanup(csk);
3350 }
3351
3352 static int cnic_cm_destroy(struct cnic_sock *csk)
3353 {
3354         if (!cnic_in_use(csk))
3355                 return -EINVAL;
3356
3357         csk_hold(csk);
3358         clear_bit(SK_F_INUSE, &csk->flags);
3359         smp_mb__after_clear_bit();
3360         while (atomic_read(&csk->ref_count) != 1)
3361                 msleep(1);
3362         cnic_cm_cleanup(csk);
3363
3364         csk->flags = 0;
3365         csk_put(csk);
3366         return 0;
3367 }
3368
3369 static inline u16 cnic_get_vlan(struct net_device *dev,
3370                                 struct net_device **vlan_dev)
3371 {
3372         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3373                 *vlan_dev = vlan_dev_real_dev(dev);
3374                 return vlan_dev_vlan_id(dev);
3375         }
3376         *vlan_dev = dev;
3377         return 0;
3378 }
3379
3380 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3381                              struct dst_entry **dst)
3382 {
3383 #if defined(CONFIG_INET)
3384         struct flowi fl;
3385         int err;
3386         struct rtable *rt;
3387
3388         memset(&fl, 0, sizeof(fl));
3389         fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
3390
3391         err = ip_route_output_key(&init_net, &rt, &fl);
3392         if (!err)
3393                 *dst = &rt->dst;
3394         return err;
3395 #else
3396         return -ENETUNREACH;
3397 #endif
3398 }
3399
3400 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3401                              struct dst_entry **dst)
3402 {
3403 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3404         struct flowi fl;
3405
3406         memset(&fl, 0, sizeof(fl));
3407         ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
3408         if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
3409                 fl.oif = dst_addr->sin6_scope_id;
3410
3411         *dst = ip6_route_output(&init_net, NULL, &fl);
3412         if (*dst)
3413                 return 0;
3414 #endif
3415
3416         return -ENETUNREACH;
3417 }
3418
3419 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3420                                            int ulp_type)
3421 {
3422         struct cnic_dev *dev = NULL;
3423         struct dst_entry *dst;
3424         struct net_device *netdev = NULL;
3425         int err = -ENETUNREACH;
3426
3427         if (dst_addr->sin_family == AF_INET)
3428                 err = cnic_get_v4_route(dst_addr, &dst);
3429         else if (dst_addr->sin_family == AF_INET6) {
3430                 struct sockaddr_in6 *dst_addr6 =
3431                         (struct sockaddr_in6 *) dst_addr;
3432
3433                 err = cnic_get_v6_route(dst_addr6, &dst);
3434         } else
3435                 return NULL;
3436
3437         if (err)
3438                 return NULL;
3439
3440         if (!dst->dev)
3441                 goto done;
3442
3443         cnic_get_vlan(dst->dev, &netdev);
3444
3445         dev = cnic_from_netdev(netdev);
3446
3447 done:
3448         dst_release(dst);
3449         if (dev)
3450                 cnic_put(dev);
3451         return dev;
3452 }
3453
3454 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3455 {
3456         struct cnic_dev *dev = csk->dev;
3457         struct cnic_local *cp = dev->cnic_priv;
3458
3459         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3460 }
3461
3462 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3463 {
3464         struct cnic_dev *dev = csk->dev;
3465         struct cnic_local *cp = dev->cnic_priv;
3466         int is_v6, rc = 0;
3467         struct dst_entry *dst = NULL;
3468         struct net_device *realdev;
3469         __be16 local_port;
3470         u32 port_id;
3471
3472         if (saddr->local.v6.sin6_family == AF_INET6 &&
3473             saddr->remote.v6.sin6_family == AF_INET6)
3474                 is_v6 = 1;
3475         else if (saddr->local.v4.sin_family == AF_INET &&
3476                  saddr->remote.v4.sin_family == AF_INET)
3477                 is_v6 = 0;
3478         else
3479                 return -EINVAL;
3480
3481         clear_bit(SK_F_IPV6, &csk->flags);
3482
3483         if (is_v6) {
3484                 set_bit(SK_F_IPV6, &csk->flags);
3485                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3486
3487                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3488                        sizeof(struct in6_addr));
3489                 csk->dst_port = saddr->remote.v6.sin6_port;
3490                 local_port = saddr->local.v6.sin6_port;
3491
3492         } else {
3493                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3494
3495                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3496                 csk->dst_port = saddr->remote.v4.sin_port;
3497                 local_port = saddr->local.v4.sin_port;
3498         }
3499
3500         csk->vlan_id = 0;
3501         csk->mtu = dev->netdev->mtu;
3502         if (dst && dst->dev) {
3503                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3504                 if (realdev == dev->netdev) {
3505                         csk->vlan_id = vlan;
3506                         csk->mtu = dst_mtu(dst);
3507                 }
3508         }
3509
3510         port_id = be16_to_cpu(local_port);
3511         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3512             port_id < CNIC_LOCAL_PORT_MAX) {
3513                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3514                         port_id = 0;
3515         } else
3516                 port_id = 0;
3517
3518         if (!port_id) {
3519                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3520                 if (port_id == -1) {
3521                         rc = -ENOMEM;
3522                         goto err_out;
3523                 }
3524                 local_port = cpu_to_be16(port_id);
3525         }
3526         csk->src_port = local_port;
3527
3528 err_out:
3529         dst_release(dst);
3530         return rc;
3531 }
3532
3533 static void cnic_init_csk_state(struct cnic_sock *csk)
3534 {
3535         csk->state = 0;
3536         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3537         clear_bit(SK_F_CLOSING, &csk->flags);
3538 }
3539
3540 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3541 {
3542         int err = 0;
3543
3544         if (!cnic_in_use(csk))
3545                 return -EINVAL;
3546
3547         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3548                 return -EINVAL;
3549
3550         cnic_init_csk_state(csk);
3551
3552         err = cnic_get_route(csk, saddr);
3553         if (err)
3554                 goto err_out;
3555
3556         err = cnic_resolve_addr(csk, saddr);
3557         if (!err)
3558                 return 0;
3559
3560 err_out:
3561         clear_bit(SK_F_CONNECT_START, &csk->flags);
3562         return err;
3563 }
3564
3565 static int cnic_cm_abort(struct cnic_sock *csk)
3566 {
3567         struct cnic_local *cp = csk->dev->cnic_priv;
3568         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3569
3570         if (!cnic_in_use(csk))
3571                 return -EINVAL;
3572
3573         if (cnic_abort_prep(csk))
3574                 return cnic_cm_abort_req(csk);
3575
3576         /* Getting here means that we haven't started connect, or
3577          * connect was not successful.
3578          */
3579
3580         cp->close_conn(csk, opcode);
3581         if (csk->state != opcode)
3582                 return -EALREADY;
3583
3584         return 0;
3585 }
3586
3587 static int cnic_cm_close(struct cnic_sock *csk)
3588 {
3589         if (!cnic_in_use(csk))
3590                 return -EINVAL;
3591
3592         if (cnic_close_prep(csk)) {
3593                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3594                 return cnic_cm_close_req(csk);
3595         } else {
3596                 return -EALREADY;
3597         }
3598         return 0;
3599 }
3600
3601 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3602                            u8 opcode)
3603 {
3604         struct cnic_ulp_ops *ulp_ops;
3605         int ulp_type = csk->ulp_type;
3606
3607         rcu_read_lock();
3608         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3609         if (ulp_ops) {
3610                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3611                         ulp_ops->cm_connect_complete(csk);
3612                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3613                         ulp_ops->cm_close_complete(csk);
3614                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3615                         ulp_ops->cm_remote_abort(csk);
3616                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3617                         ulp_ops->cm_abort_complete(csk);
3618                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3619                         ulp_ops->cm_remote_close(csk);
3620         }
3621         rcu_read_unlock();
3622 }
3623
3624 static int cnic_cm_set_pg(struct cnic_sock *csk)
3625 {
3626         if (cnic_offld_prep(csk)) {
3627                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3628                         cnic_cm_update_pg(csk);
3629                 else
3630                         cnic_cm_offload_pg(csk);
3631         }
3632         return 0;
3633 }
3634
3635 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3636 {
3637         struct cnic_local *cp = dev->cnic_priv;
3638         u32 l5_cid = kcqe->pg_host_opaque;
3639         u8 opcode = kcqe->op_code;
3640         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3641
3642         csk_hold(csk);
3643         if (!cnic_in_use(csk))
3644                 goto done;
3645
3646         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3647                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3648                 goto done;
3649         }
3650         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3651         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3652                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3653                 cnic_cm_upcall(cp, csk,
3654                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3655                 goto done;
3656         }
3657
3658         csk->pg_cid = kcqe->pg_cid;
3659         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3660         cnic_cm_conn_req(csk);
3661
3662 done:
3663         csk_put(csk);
3664 }
3665
3666 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3667 {
3668         struct cnic_local *cp = dev->cnic_priv;
3669         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3670         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3671         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3672
3673         ctx->timestamp = jiffies;
3674         ctx->wait_cond = 1;
3675         wake_up(&ctx->waitq);
3676 }
3677
3678 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3679 {
3680         struct cnic_local *cp = dev->cnic_priv;
3681         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3682         u8 opcode = l4kcqe->op_code;
3683         u32 l5_cid;
3684         struct cnic_sock *csk;
3685
3686         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3687                 cnic_process_fcoe_term_conn(dev, kcqe);
3688                 return;
3689         }
3690         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3691             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3692                 cnic_cm_process_offld_pg(dev, l4kcqe);
3693                 return;
3694         }
3695
3696         l5_cid = l4kcqe->conn_id;
3697         if (opcode & 0x80)
3698                 l5_cid = l4kcqe->cid;
3699         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3700                 return;
3701
3702         csk = &cp->csk_tbl[l5_cid];
3703         csk_hold(csk);
3704
3705         if (!cnic_in_use(csk)) {
3706                 csk_put(csk);
3707                 return;
3708         }
3709
3710         switch (opcode) {
3711         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3712                 if (l4kcqe->status != 0) {
3713                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3714                         cnic_cm_upcall(cp, csk,
3715                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3716                 }
3717                 break;
3718         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3719                 if (l4kcqe->status == 0)
3720                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3721
3722                 smp_mb__before_clear_bit();
3723                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3724                 cnic_cm_upcall(cp, csk, opcode);
3725                 break;
3726
3727         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3728         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3729         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3730         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3731         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3732                 cp->close_conn(csk, opcode);
3733                 break;
3734
3735         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3736                 cnic_cm_upcall(cp, csk, opcode);
3737                 break;
3738         }
3739         csk_put(csk);
3740 }
3741
3742 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3743 {
3744         struct cnic_dev *dev = data;
3745         int i;
3746
3747         for (i = 0; i < num; i++)
3748                 cnic_cm_process_kcqe(dev, kcqe[i]);
3749 }
3750
3751 static struct cnic_ulp_ops cm_ulp_ops = {
3752         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3753 };
3754
3755 static void cnic_cm_free_mem(struct cnic_dev *dev)
3756 {
3757         struct cnic_local *cp = dev->cnic_priv;
3758
3759         kfree(cp->csk_tbl);
3760         cp->csk_tbl = NULL;
3761         cnic_free_id_tbl(&cp->csk_port_tbl);
3762 }
3763
3764 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3765 {
3766         struct cnic_local *cp = dev->cnic_priv;
3767
3768         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3769                               GFP_KERNEL);
3770         if (!cp->csk_tbl)
3771                 return -ENOMEM;
3772
3773         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3774                              CNIC_LOCAL_PORT_MIN)) {
3775                 cnic_cm_free_mem(dev);
3776                 return -ENOMEM;
3777         }
3778         return 0;
3779 }
3780
3781 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3782 {
3783         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
3784                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
3785                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
3786                 csk->state = opcode;
3787         }
3788
3789         /* 1. If event opcode matches the expected event in csk->state
3790          * 2. If the expected event is CLOSE_COMP, we accept any event
3791          * 3. If the expected event is 0, meaning the connection was never
3792          *    never established, we accept the opcode from cm_abort.
3793          */
3794         if (opcode == csk->state || csk->state == 0 ||
3795             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) {
3796                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
3797                         if (csk->state == 0)
3798                                 csk->state = opcode;
3799                         return 1;
3800                 }
3801         }
3802         return 0;
3803 }
3804
3805 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3806 {
3807         struct cnic_dev *dev = csk->dev;
3808         struct cnic_local *cp = dev->cnic_priv;
3809
3810         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
3811                 cnic_cm_upcall(cp, csk, opcode);
3812                 return;
3813         }
3814
3815         clear_bit(SK_F_CONNECT_START, &csk->flags);
3816         cnic_close_conn(csk);
3817         csk->state = opcode;
3818         cnic_cm_upcall(cp, csk, opcode);
3819 }
3820
3821 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3822 {
3823 }
3824
3825 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3826 {
3827         u32 seed;
3828
3829         get_random_bytes(&seed, 4);
3830         cnic_ctx_wr(dev, 45, 0, seed);
3831         return 0;
3832 }
3833
3834 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3835 {
3836         struct cnic_dev *dev = csk->dev;
3837         struct cnic_local *cp = dev->cnic_priv;
3838         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3839         union l5cm_specific_data l5_data;
3840         u32 cmd = 0;
3841         int close_complete = 0;
3842
3843         switch (opcode) {
3844         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3845         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3846         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3847                 if (cnic_ready_to_close(csk, opcode)) {
3848                         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3849                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3850                         else
3851                                 close_complete = 1;
3852                 }
3853                 break;
3854         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3855                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3856                 break;
3857         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3858                 close_complete = 1;
3859                 break;
3860         }
3861         if (cmd) {
3862                 memset(&l5_data, 0, sizeof(l5_data));
3863
3864                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3865                                     &l5_data);
3866         } else if (close_complete) {
3867                 ctx->timestamp = jiffies;
3868                 cnic_close_conn(csk);
3869                 cnic_cm_upcall(cp, csk, csk->state);
3870         }
3871 }
3872
3873 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3874 {
3875         struct cnic_local *cp = dev->cnic_priv;
3876         int i;
3877
3878         if (!cp->ctx_tbl)
3879                 return;
3880
3881         if (!netif_running(dev->netdev))
3882                 return;
3883
3884         for (i = 0; i < cp->max_cid_space; i++) {
3885                 struct cnic_context *ctx = &cp->ctx_tbl[i];
3886
3887                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3888                         msleep(10);
3889
3890                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3891                         netdev_warn(dev->netdev, "CID %x not deleted\n",
3892                                    ctx->cid);
3893         }
3894
3895         cancel_delayed_work(&cp->delete_task);
3896         flush_workqueue(cnic_wq);
3897
3898         if (atomic_read(&cp->iscsi_conn) != 0)
3899                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
3900                             atomic_read(&cp->iscsi_conn));
3901 }
3902
3903 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3904 {
3905         struct cnic_local *cp = dev->cnic_priv;
3906         u32 pfid = cp->pfid;
3907         u32 port = CNIC_PORT(cp);
3908
3909         cnic_init_bnx2x_mac(dev);
3910         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3911
3912         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3913                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
3914
3915         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3916                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
3917         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3918                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
3919                 DEF_MAX_DA_COUNT);
3920
3921         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3922                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
3923         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3924                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
3925         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3926                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
3927         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3928                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
3929
3930         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
3931                 DEF_MAX_CWND);
3932         return 0;
3933 }
3934
3935 static void cnic_delete_task(struct work_struct *work)
3936 {
3937         struct cnic_local *cp;
3938         struct cnic_dev *dev;
3939         u32 i;
3940         int need_resched = 0;
3941
3942         cp = container_of(work, struct cnic_local, delete_task.work);
3943         dev = cp->dev;
3944
3945         for (i = 0; i < cp->max_cid_space; i++) {
3946                 struct cnic_context *ctx = &cp->ctx_tbl[i];
3947
3948                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
3949                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3950                         continue;
3951
3952                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
3953                         need_resched = 1;
3954                         continue;
3955                 }
3956
3957                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3958                         continue;
3959
3960                 cnic_bnx2x_destroy_ramrod(dev, i);
3961
3962                 cnic_free_bnx2x_conn_resc(dev, i);
3963                 if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
3964                         atomic_dec(&cp->iscsi_conn);
3965
3966                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
3967         }
3968
3969         if (need_resched)
3970                 queue_delayed_work(cnic_wq, &cp->delete_task,
3971                                    msecs_to_jiffies(10));
3972
3973 }
3974
3975 static int cnic_cm_open(struct cnic_dev *dev)
3976 {
3977         struct cnic_local *cp = dev->cnic_priv;
3978         int err;
3979
3980         err = cnic_cm_alloc_mem(dev);
3981         if (err)
3982                 return err;
3983
3984         err = cp->start_cm(dev);
3985
3986         if (err)
3987                 goto err_out;
3988
3989         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
3990
3991         dev->cm_create = cnic_cm_create;
3992         dev->cm_destroy = cnic_cm_destroy;
3993         dev->cm_connect = cnic_cm_connect;
3994         dev->cm_abort = cnic_cm_abort;
3995         dev->cm_close = cnic_cm_close;
3996         dev->cm_select_dev = cnic_cm_select_dev;
3997
3998         cp->ulp_handle[CNIC_ULP_L4] = dev;
3999         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4000         return 0;
4001
4002 err_out:
4003         cnic_cm_free_mem(dev);
4004         return err;
4005 }
4006
4007 static int cnic_cm_shutdown(struct cnic_dev *dev)
4008 {
4009         struct cnic_local *cp = dev->cnic_priv;
4010         int i;
4011
4012         cp->stop_cm(dev);
4013
4014         if (!cp->csk_tbl)
4015                 return 0;
4016
4017         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4018                 struct cnic_sock *csk = &cp->csk_tbl[i];
4019
4020                 clear_bit(SK_F_INUSE, &csk->flags);
4021                 cnic_cm_cleanup(csk);
4022         }
4023         cnic_cm_free_mem(dev);
4024
4025         return 0;
4026 }
4027
4028 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4029 {
4030         u32 cid_addr;
4031         int i;
4032
4033         cid_addr = GET_CID_ADDR(cid);
4034
4035         for (i = 0; i < CTX_SIZE; i += 4)
4036                 cnic_ctx_wr(dev, cid_addr, i, 0);
4037 }
4038
4039 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4040 {
4041         struct cnic_local *cp = dev->cnic_priv;
4042         int ret = 0, i;
4043         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4044
4045         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4046                 return 0;
4047
4048         for (i = 0; i < cp->ctx_blks; i++) {
4049                 int j;
4050                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4051                 u32 val;
4052
4053                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
4054
4055                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4056                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4057                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4058                         (u64) cp->ctx_arr[i].mapping >> 32);
4059                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4060                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4061                 for (j = 0; j < 10; j++) {
4062
4063                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4064                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4065                                 break;
4066                         udelay(5);
4067                 }
4068                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4069                         ret = -EBUSY;
4070                         break;
4071                 }
4072         }
4073         return ret;
4074 }
4075
4076 static void cnic_free_irq(struct cnic_dev *dev)
4077 {
4078         struct cnic_local *cp = dev->cnic_priv;
4079         struct cnic_eth_dev *ethdev = cp->ethdev;
4080
4081         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4082                 cp->disable_int_sync(dev);
4083                 tasklet_kill(&cp->cnic_irq_task);
4084                 free_irq(ethdev->irq_arr[0].vector, dev);
4085         }
4086 }
4087
4088 static int cnic_request_irq(struct cnic_dev *dev)
4089 {
4090         struct cnic_local *cp = dev->cnic_priv;
4091         struct cnic_eth_dev *ethdev = cp->ethdev;
4092         int err;
4093
4094         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4095         if (err)
4096                 tasklet_disable(&cp->cnic_irq_task);
4097
4098         return err;
4099 }
4100
4101 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4102 {
4103         struct cnic_local *cp = dev->cnic_priv;
4104         struct cnic_eth_dev *ethdev = cp->ethdev;
4105
4106         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4107                 int err, i = 0;
4108                 int sblk_num = cp->status_blk_num;
4109                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4110                            BNX2_HC_SB_CONFIG_1;
4111
4112                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4113
4114                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4115                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4116                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4117
4118                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4119                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4120                              (unsigned long) dev);
4121                 err = cnic_request_irq(dev);
4122                 if (err)
4123                         return err;
4124
4125                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4126                        i < 10) {
4127                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4128                                 1 << (11 + sblk_num));
4129                         udelay(10);
4130                         i++;
4131                         barrier();
4132                 }
4133                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4134                         cnic_free_irq(dev);
4135                         goto failed;
4136                 }
4137
4138         } else {
4139                 struct status_block *sblk = cp->status_blk.gen;
4140                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4141                 int i = 0;
4142
4143                 while (sblk->status_completion_producer_index && i < 10) {
4144                         CNIC_WR(dev, BNX2_HC_COMMAND,
4145                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4146                         udelay(10);
4147                         i++;
4148                         barrier();
4149                 }
4150                 if (sblk->status_completion_producer_index)
4151                         goto failed;
4152
4153         }
4154         return 0;
4155
4156 failed:
4157         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4158         return -EBUSY;
4159 }
4160
4161 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4162 {
4163         struct cnic_local *cp = dev->cnic_priv;
4164         struct cnic_eth_dev *ethdev = cp->ethdev;
4165
4166         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4167                 return;
4168
4169         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4170                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4171 }
4172
4173 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4174 {
4175         struct cnic_local *cp = dev->cnic_priv;
4176         struct cnic_eth_dev *ethdev = cp->ethdev;
4177
4178         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4179                 return;
4180
4181         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4182                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4183         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4184         synchronize_irq(ethdev->irq_arr[0].vector);
4185 }
4186
4187 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4188 {
4189         struct cnic_local *cp = dev->cnic_priv;
4190         struct cnic_eth_dev *ethdev = cp->ethdev;
4191         struct cnic_uio_dev *udev = cp->udev;
4192         u32 cid_addr, tx_cid, sb_id;
4193         u32 val, offset0, offset1, offset2, offset3;
4194         int i;
4195         struct tx_bd *txbd;
4196         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4197         struct status_block *s_blk = cp->status_blk.gen;
4198
4199         sb_id = cp->status_blk_num;
4200         tx_cid = 20;
4201         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4202         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4203                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4204
4205                 tx_cid = TX_TSS_CID + sb_id - 1;
4206                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4207                         (TX_TSS_CID << 7));
4208                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4209         }
4210         cp->tx_cons = *cp->tx_cons_ptr;
4211
4212         cid_addr = GET_CID_ADDR(tx_cid);
4213         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
4214                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4215
4216                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4217                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4218
4219                 offset0 = BNX2_L2CTX_TYPE_XI;
4220                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4221                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4222                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4223         } else {
4224                 cnic_init_context(dev, tx_cid);
4225                 cnic_init_context(dev, tx_cid + 1);
4226
4227                 offset0 = BNX2_L2CTX_TYPE;
4228                 offset1 = BNX2_L2CTX_CMD_TYPE;
4229                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4230                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4231         }
4232         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4233         cnic_ctx_wr(dev, cid_addr, offset0, val);
4234
4235         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4236         cnic_ctx_wr(dev, cid_addr, offset1, val);
4237
4238         txbd = (struct tx_bd *) udev->l2_ring;
4239
4240         buf_map = udev->l2_buf_map;
4241         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
4242                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4243                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4244         }
4245         val = (u64) ring_map >> 32;
4246         cnic_ctx_wr(dev, cid_addr, offset2, val);
4247         txbd->tx_bd_haddr_hi = val;
4248
4249         val = (u64) ring_map & 0xffffffff;
4250         cnic_ctx_wr(dev, cid_addr, offset3, val);
4251         txbd->tx_bd_haddr_lo = val;
4252 }
4253
4254 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4255 {
4256         struct cnic_local *cp = dev->cnic_priv;
4257         struct cnic_eth_dev *ethdev = cp->ethdev;
4258         struct cnic_uio_dev *udev = cp->udev;
4259         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4260         int i;
4261         struct rx_bd *rxbd;
4262         struct status_block *s_blk = cp->status_blk.gen;
4263         dma_addr_t ring_map = udev->l2_ring_map;
4264
4265         sb_id = cp->status_blk_num;
4266         cnic_init_context(dev, 2);
4267         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4268         coal_reg = BNX2_HC_COMMAND;
4269         coal_val = CNIC_RD(dev, coal_reg);
4270         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4271                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4272
4273                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4274                 coal_reg = BNX2_HC_COALESCE_NOW;
4275                 coal_val = 1 << (11 + sb_id);
4276         }
4277         i = 0;
4278         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4279                 CNIC_WR(dev, coal_reg, coal_val);
4280                 udelay(10);
4281                 i++;
4282                 barrier();
4283         }
4284         cp->rx_cons = *cp->rx_cons_ptr;
4285
4286         cid_addr = GET_CID_ADDR(2);
4287         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4288               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4289         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4290
4291         if (sb_id == 0)
4292                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4293         else
4294                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4295         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4296
4297         rxbd = (struct rx_bd *) (udev->l2_ring + BCM_PAGE_SIZE);
4298         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
4299                 dma_addr_t buf_map;
4300                 int n = (i % cp->l2_rx_ring_size) + 1;
4301
4302                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4303                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4304                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4305                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4306                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4307         }
4308         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4309         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4310         rxbd->rx_bd_haddr_hi = val;
4311
4312         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4313         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4314         rxbd->rx_bd_haddr_lo = val;
4315
4316         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4317         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4318 }
4319
4320 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4321 {
4322         struct kwqe *wqes[1], l2kwqe;
4323
4324         memset(&l2kwqe, 0, sizeof(l2kwqe));
4325         wqes[0] = &l2kwqe;
4326         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4327                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4328                                KWQE_OPCODE_SHIFT) | 2;
4329         dev->submit_kwqes(dev, wqes, 1);
4330 }
4331
4332 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4333 {
4334         struct cnic_local *cp = dev->cnic_priv;
4335         u32 val;
4336
4337         val = cp->func << 2;
4338
4339         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4340
4341         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4342                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4343         dev->mac_addr[0] = (u8) (val >> 8);
4344         dev->mac_addr[1] = (u8) val;
4345
4346         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4347
4348         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4349                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4350         dev->mac_addr[2] = (u8) (val >> 24);
4351         dev->mac_addr[3] = (u8) (val >> 16);
4352         dev->mac_addr[4] = (u8) (val >> 8);
4353         dev->mac_addr[5] = (u8) val;
4354
4355         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4356
4357         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4358         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4359                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4360
4361         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4362         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4363         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4364 }
4365
4366 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4367 {
4368         struct cnic_local *cp = dev->cnic_priv;
4369         struct cnic_eth_dev *ethdev = cp->ethdev;
4370         struct status_block *sblk = cp->status_blk.gen;
4371         u32 val, kcq_cid_addr, kwq_cid_addr;
4372         int err;
4373
4374         cnic_set_bnx2_mac(dev);
4375
4376         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4377         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4378         if (BCM_PAGE_BITS > 12)
4379                 val |= (12 - 8)  << 4;
4380         else
4381                 val |= (BCM_PAGE_BITS - 8)  << 4;
4382
4383         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4384
4385         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4386         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4387         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4388
4389         err = cnic_setup_5709_context(dev, 1);
4390         if (err)
4391                 return err;
4392
4393         cnic_init_context(dev, KWQ_CID);
4394         cnic_init_context(dev, KCQ_CID);
4395
4396         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4397         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4398
4399         cp->max_kwq_idx = MAX_KWQ_IDX;
4400         cp->kwq_prod_idx = 0;
4401         cp->kwq_con_idx = 0;
4402         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4403
4404         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
4405                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4406         else
4407                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4408
4409         /* Initialize the kernel work queue context. */
4410         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4411               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4412         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4413
4414         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4415         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4416
4417         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4418         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4419
4420         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4421         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4422
4423         val = (u32) cp->kwq_info.pgtbl_map;
4424         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4425
4426         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4427         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4428
4429         cp->kcq1.sw_prod_idx = 0;
4430         cp->kcq1.hw_prod_idx_ptr =
4431                 (u16 *) &sblk->status_completion_producer_index;
4432
4433         cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
4434
4435         /* Initialize the kernel complete queue context. */
4436         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4437               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4438         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4439
4440         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4441         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4442
4443         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4444         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4445
4446         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4447         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4448
4449         val = (u32) cp->kcq1.dma.pgtbl_map;
4450         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4451
4452         cp->int_num = 0;
4453         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4454                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4455                 u32 sb_id = cp->status_blk_num;
4456                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4457
4458                 cp->kcq1.hw_prod_idx_ptr =
4459                         (u16 *) &msblk->status_completion_producer_index;
4460                 cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
4461                 cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
4462                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4463                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4464                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4465         }
4466
4467         /* Enable Commnad Scheduler notification when we write to the
4468          * host producer index of the kernel contexts. */
4469         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4470
4471         /* Enable Command Scheduler notification when we write to either
4472          * the Send Queue or Receive Queue producer indexes of the kernel
4473          * bypass contexts. */
4474         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4475         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4476
4477         /* Notify COM when the driver post an application buffer. */
4478         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4479
4480         /* Set the CP and COM doorbells.  These two processors polls the
4481          * doorbell for a non zero value before running.  This must be done
4482          * after setting up the kernel queue contexts. */
4483         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4484         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4485
4486         cnic_init_bnx2_tx_ring(dev);
4487         cnic_init_bnx2_rx_ring(dev);
4488
4489         err = cnic_init_bnx2_irq(dev);
4490         if (err) {
4491                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4492                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4493                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4494                 return err;
4495         }
4496
4497         return 0;
4498 }
4499
4500 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4501 {
4502         struct cnic_local *cp = dev->cnic_priv;
4503         struct cnic_eth_dev *ethdev = cp->ethdev;
4504         u32 start_offset = ethdev->ctx_tbl_offset;
4505         int i;
4506
4507         for (i = 0; i < cp->ctx_blks; i++) {
4508                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4509                 dma_addr_t map = ctx->mapping;
4510
4511                 if (cp->ctx_align) {
4512                         unsigned long mask = cp->ctx_align - 1;
4513
4514                         map = (map + mask) & ~mask;
4515                 }
4516
4517                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4518         }
4519 }
4520
4521 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4522 {
4523         struct cnic_local *cp = dev->cnic_priv;
4524         struct cnic_eth_dev *ethdev = cp->ethdev;
4525         int err = 0;
4526
4527         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4528                      (unsigned long) dev);
4529         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4530                 err = cnic_request_irq(dev);
4531
4532         return err;
4533 }
4534
4535 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4536                                                 u16 sb_id, u8 sb_index,
4537                                                 u8 disable)
4538 {
4539
4540         u32 addr = BAR_CSTRORM_INTMEM +
4541                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4542                         offsetof(struct hc_status_block_data_e1x, index_data) +
4543                         sizeof(struct hc_index_data)*sb_index +
4544                         offsetof(struct hc_index_data, flags);
4545         u16 flags = CNIC_RD16(dev, addr);
4546         /* clear and set */
4547         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4548         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4549                   HC_INDEX_DATA_HC_ENABLED);
4550         CNIC_WR16(dev, addr, flags);
4551 }
4552
4553 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4554 {
4555         struct cnic_local *cp = dev->cnic_priv;
4556         u8 sb_id = cp->status_blk_num;
4557
4558         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4559                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4560                         offsetof(struct hc_status_block_data_e1x, index_data) +
4561                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4562                         offsetof(struct hc_index_data, timeout), 64 / 12);
4563         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4564 }
4565
4566 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4567 {
4568 }
4569
4570 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4571                                     struct client_init_ramrod_data *data)
4572 {
4573         struct cnic_local *cp = dev->cnic_priv;
4574         struct cnic_uio_dev *udev = cp->udev;
4575         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4576         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4577         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4578         int port = CNIC_PORT(cp);
4579         int i;
4580         u32 cli = cp->ethdev->iscsi_l2_client_id;
4581         u32 val;
4582
4583         memset(txbd, 0, BCM_PAGE_SIZE);
4584
4585         buf_map = udev->l2_buf_map;
4586         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4587                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4588                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4589
4590                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4591                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4592                 reg_bd->addr_hi = start_bd->addr_hi;
4593                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4594                 start_bd->nbytes = cpu_to_le16(0x10);
4595                 start_bd->nbd = cpu_to_le16(3);
4596                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4597                 start_bd->general_data = (UNICAST_ADDRESS <<
4598                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
4599                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4600
4601         }
4602
4603         val = (u64) ring_map >> 32;
4604         txbd->next_bd.addr_hi = cpu_to_le32(val);
4605
4606         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4607
4608         val = (u64) ring_map & 0xffffffff;
4609         txbd->next_bd.addr_lo = cpu_to_le32(val);
4610
4611         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4612
4613         /* Other ramrod params */
4614         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4615         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4616
4617         /* reset xstorm per client statistics */
4618         if (cli < MAX_STAT_COUNTER_ID) {
4619                 val = BAR_XSTRORM_INTMEM +
4620                       XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4621                 for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
4622                         CNIC_WR(dev, val + i * 4, 0);
4623         }
4624
4625         cp->tx_cons_ptr =
4626                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4627 }
4628
4629 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4630                                     struct client_init_ramrod_data *data)
4631 {
4632         struct cnic_local *cp = dev->cnic_priv;
4633         struct cnic_uio_dev *udev = cp->udev;
4634         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4635                                 BCM_PAGE_SIZE);
4636         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4637                                 (udev->l2_ring + (2 * BCM_PAGE_SIZE));
4638         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4639         int i;
4640         int port = CNIC_PORT(cp);
4641         u32 cli = cp->ethdev->iscsi_l2_client_id;
4642         int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4643         u32 val;
4644         dma_addr_t ring_map = udev->l2_ring_map;
4645
4646         /* General data */
4647         data->general.client_id = cli;
4648         data->general.statistics_en_flg = 1;
4649         data->general.statistics_counter_id = cli;
4650         data->general.activate_flg = 1;
4651         data->general.sp_client_id = cli;
4652
4653         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4654                 dma_addr_t buf_map;
4655                 int n = (i % cp->l2_rx_ring_size) + 1;
4656
4657                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4658                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4659                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4660         }
4661
4662         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4663         rxbd->addr_hi = cpu_to_le32(val);
4664         data->rx.bd_page_base.hi = cpu_to_le32(val);
4665
4666         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4667         rxbd->addr_lo = cpu_to_le32(val);
4668         data->rx.bd_page_base.lo = cpu_to_le32(val);
4669
4670         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4671         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4672         rxcqe->addr_hi = cpu_to_le32(val);
4673         data->rx.cqe_page_base.hi = cpu_to_le32(val);
4674
4675         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4676         rxcqe->addr_lo = cpu_to_le32(val);
4677         data->rx.cqe_page_base.lo = cpu_to_le32(val);
4678
4679         /* Other ramrod params */
4680         data->rx.client_qzone_id = cl_qzone_id;
4681         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
4682         data->rx.status_block_id = BNX2X_DEF_SB_ID;
4683
4684         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4685         data->rx.bd_buff_size = cpu_to_le16(cp->l2_single_buf_size);
4686
4687         data->rx.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4688         data->rx.outer_vlan_removal_enable_flg = 1;
4689
4690         /* reset tstorm and ustorm per client statistics */
4691         if (cli < MAX_STAT_COUNTER_ID) {
4692                 val = BAR_TSTRORM_INTMEM +
4693                       TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4694                 for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
4695                         CNIC_WR(dev, val + i * 4, 0);
4696
4697                 val = BAR_USTRORM_INTMEM +
4698                       USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4699                 for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
4700                         CNIC_WR(dev, val + i * 4, 0);
4701         }
4702
4703         cp->rx_cons_ptr =
4704                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4705         cp->rx_cons = *cp->rx_cons_ptr;
4706 }
4707
4708 static int cnic_read_bnx2x_iscsi_mac(struct cnic_dev *dev, u32 upper_addr,
4709                                      u32 lower_addr)
4710 {
4711         u32 val;
4712         u8 mac[6];
4713
4714         val = CNIC_RD(dev, upper_addr);
4715
4716         mac[0] = (u8) (val >> 8);
4717         mac[1] = (u8) val;
4718
4719         val = CNIC_RD(dev, lower_addr);
4720
4721         mac[2] = (u8) (val >> 24);
4722         mac[3] = (u8) (val >> 16);
4723         mac[4] = (u8) (val >> 8);
4724         mac[5] = (u8) val;
4725
4726         if (is_valid_ether_addr(mac)) {
4727                 memcpy(dev->mac_addr, mac, 6);
4728                 return 0;
4729         } else {
4730                 return -EINVAL;
4731         }
4732 }
4733
4734 static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
4735 {
4736         struct cnic_local *cp = dev->cnic_priv;
4737         u32 base, base2, addr, addr1, val;
4738         int port = CNIC_PORT(cp);
4739
4740         dev->max_iscsi_conn = 0;
4741         base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
4742         if (base == 0)
4743                 return;
4744
4745         base2 = CNIC_RD(dev, (CNIC_PATH(cp) ? MISC_REG_GENERIC_CR_1 :
4746                                               MISC_REG_GENERIC_CR_0));
4747         addr = BNX2X_SHMEM_ADDR(base,
4748                 dev_info.port_hw_config[port].iscsi_mac_upper);
4749
4750         addr1 = BNX2X_SHMEM_ADDR(base,
4751                 dev_info.port_hw_config[port].iscsi_mac_lower);
4752
4753         cnic_read_bnx2x_iscsi_mac(dev, addr, addr1);
4754
4755         addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
4756         val = CNIC_RD(dev, addr);
4757
4758         if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
4759                 u16 val16;
4760
4761                 addr = BNX2X_SHMEM_ADDR(base,
4762                                 drv_lic_key[port].max_iscsi_init_conn);
4763                 val16 = CNIC_RD16(dev, addr);
4764
4765                 if (val16)
4766                         val16 ^= 0x1e1e;
4767                 dev->max_iscsi_conn = val16;
4768         }
4769
4770         if (BNX2X_CHIP_IS_E2(cp->chip_id))
4771                 dev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
4772
4773         if (BNX2X_CHIP_IS_E1H(cp->chip_id) || BNX2X_CHIP_IS_E2(cp->chip_id)) {
4774                 int func = CNIC_FUNC(cp);
4775                 u32 mf_cfg_addr;
4776
4777                 if (BNX2X_SHMEM2_HAS(base2, mf_cfg_addr))
4778                         mf_cfg_addr = CNIC_RD(dev, BNX2X_SHMEM2_ADDR(base2,
4779                                               mf_cfg_addr));
4780                 else
4781                         mf_cfg_addr = base + BNX2X_SHMEM_MF_BLK_OFFSET;
4782
4783                 if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4784                         /* Must determine if the MF is SD vs SI mode */
4785                         addr = BNX2X_SHMEM_ADDR(base,
4786                                         dev_info.shared_feature_config.config);
4787                         val = CNIC_RD(dev, addr);
4788                         if ((val & SHARED_FEAT_CFG_FORCE_SF_MODE_MASK) ==
4789                             SHARED_FEAT_CFG_FORCE_SF_MODE_SWITCH_INDEPT) {
4790                                 int rc;
4791
4792                                 /* MULTI_FUNCTION_SI mode */
4793                                 addr = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
4794                                         func_ext_config[func].func_cfg);
4795                                 val = CNIC_RD(dev, addr);
4796                                 if (!(val & MACP_FUNC_CFG_FLAGS_ISCSI_OFFLOAD))
4797                                         dev->max_iscsi_conn = 0;
4798
4799                                 if (!(val & MACP_FUNC_CFG_FLAGS_FCOE_OFFLOAD))
4800                                         dev->max_fcoe_conn = 0;
4801
4802                                 addr = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
4803                                         func_ext_config[func].
4804                                         iscsi_mac_addr_upper);
4805                                 addr1 = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
4806                                         func_ext_config[func].
4807                                         iscsi_mac_addr_lower);
4808                                 rc = cnic_read_bnx2x_iscsi_mac(dev, addr,
4809                                                                 addr1);
4810                                 if (rc && func > 1)
4811                                         dev->max_iscsi_conn = 0;
4812
4813                                 return;
4814                         }
4815                 }
4816
4817                 addr = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
4818                         func_mf_config[func].e1hov_tag);
4819
4820                 val = CNIC_RD(dev, addr);
4821                 val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
4822                 if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
4823                         dev->max_fcoe_conn = 0;
4824                         dev->max_iscsi_conn = 0;
4825                 }
4826         }
4827         if (!is_valid_ether_addr(dev->mac_addr))
4828                 dev->max_iscsi_conn = 0;
4829 }
4830
4831 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
4832 {
4833         struct cnic_local *cp = dev->cnic_priv;
4834         u32 pfid = cp->pfid;
4835
4836         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4837                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4838         cp->kcq1.sw_prod_idx = 0;
4839
4840         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4841                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4842
4843                 cp->kcq1.hw_prod_idx_ptr =
4844                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4845                 cp->kcq1.status_idx_ptr =
4846                         &sb->sb.running_index[SM_RX_ID];
4847         } else {
4848                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
4849
4850                 cp->kcq1.hw_prod_idx_ptr =
4851                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4852                 cp->kcq1.status_idx_ptr =
4853                         &sb->sb.running_index[SM_RX_ID];
4854         }
4855
4856         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4857                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4858
4859                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
4860                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
4861                 cp->kcq2.sw_prod_idx = 0;
4862                 cp->kcq2.hw_prod_idx_ptr =
4863                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
4864                 cp->kcq2.status_idx_ptr =
4865                         &sb->sb.running_index[SM_RX_ID];
4866         }
4867 }
4868
4869 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4870 {
4871         struct cnic_local *cp = dev->cnic_priv;
4872         struct cnic_eth_dev *ethdev = cp->ethdev;
4873         int func = CNIC_FUNC(cp), ret, i;
4874         u32 pfid;
4875
4876         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4877                 u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);
4878
4879                 if (!(val & 1))
4880                         val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN);
4881                 else
4882                         val = (val >> 1) & 1;
4883
4884                 if (val)
4885                         cp->pfid = func >> 1;
4886                 else
4887                         cp->pfid = func & 0x6;
4888         } else {
4889                 cp->pfid = func;
4890         }
4891         pfid = cp->pfid;
4892
4893         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4894                                cp->iscsi_start_cid);
4895
4896         if (ret)
4897                 return -ENOMEM;
4898
4899         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4900                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl,
4901                                         BNX2X_FCOE_NUM_CONNECTIONS,
4902                                         cp->fcoe_start_cid);
4903
4904                 if (ret)
4905                         return -ENOMEM;
4906         }
4907
4908         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
4909
4910         cnic_init_bnx2x_kcq(dev);
4911
4912         cnic_get_bnx2x_iscsi_info(dev);
4913
4914         /* Only 1 EQ */
4915         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
4916         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4917                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
4918         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4919                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
4920                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
4921         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4922                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
4923                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
4924         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4925                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
4926                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
4927         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4928                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
4929                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
4930         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4931                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
4932         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4933                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
4934         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4935                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
4936                 HC_INDEX_ISCSI_EQ_CONS);
4937
4938         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4939                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4940                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i),
4941                         cp->conn_buf_info.pgtbl[2 * i]);
4942                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4943                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i) + 4,
4944                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4945         }
4946
4947         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4948                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
4949                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4950         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4951                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
4952                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4953
4954         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4955                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
4956
4957         cnic_setup_bnx2x_context(dev);
4958
4959         ret = cnic_init_bnx2x_irq(dev);
4960         if (ret)
4961                 return ret;
4962
4963         return 0;
4964 }
4965
4966 static void cnic_init_rings(struct cnic_dev *dev)
4967 {
4968         struct cnic_local *cp = dev->cnic_priv;
4969         struct cnic_uio_dev *udev = cp->udev;
4970
4971         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4972                 return;
4973
4974         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4975                 cnic_init_bnx2_tx_ring(dev);
4976                 cnic_init_bnx2_rx_ring(dev);
4977                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4978         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4979                 u32 cli = cp->ethdev->iscsi_l2_client_id;
4980                 u32 cid = cp->ethdev->iscsi_l2_cid;
4981                 u32 cl_qzone_id;
4982                 struct client_init_ramrod_data *data;
4983                 union l5cm_specific_data l5_data;
4984                 struct ustorm_eth_rx_producers rx_prods = {0};
4985                 u32 off, i;
4986
4987                 rx_prods.bd_prod = 0;
4988                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4989                 barrier();
4990
4991                 cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4992
4993                 off = BAR_USTRORM_INTMEM +
4994                         (BNX2X_CHIP_IS_E2(cp->chip_id) ?
4995                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
4996                          USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
4997
4998                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4999                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5000
5001                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5002
5003                 data = udev->l2_buf;
5004
5005                 memset(data, 0, sizeof(*data));
5006
5007                 cnic_init_bnx2x_tx_ring(dev, data);
5008                 cnic_init_bnx2x_rx_ring(dev, data);
5009
5010                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5011                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5012
5013                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5014
5015                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5016                         cid, ETH_CONNECTION_TYPE, &l5_data);
5017
5018                 i = 0;
5019                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5020                        ++i < 10)
5021                         msleep(1);
5022
5023                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5024                         netdev_err(dev->netdev,
5025                                 "iSCSI CLIENT_SETUP did not complete\n");
5026                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5027                 cnic_ring_ctl(dev, cid, cli, 1);
5028         }
5029 }
5030
5031 static void cnic_shutdown_rings(struct cnic_dev *dev)
5032 {
5033         struct cnic_local *cp = dev->cnic_priv;
5034
5035         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5036                 return;
5037
5038         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5039                 cnic_shutdown_bnx2_rx_ring(dev);
5040         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5041                 struct cnic_local *cp = dev->cnic_priv;
5042                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5043                 u32 cid = cp->ethdev->iscsi_l2_cid;
5044                 union l5cm_specific_data l5_data;
5045                 int i;
5046
5047                 cnic_ring_ctl(dev, cid, cli, 0);
5048
5049                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5050
5051                 l5_data.phy_address.lo = cli;
5052                 l5_data.phy_address.hi = 0;
5053                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5054                         cid, ETH_CONNECTION_TYPE, &l5_data);
5055                 i = 0;
5056                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5057                        ++i < 10)
5058                         msleep(1);
5059
5060                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5061                         netdev_err(dev->netdev,
5062                                 "iSCSI CLIENT_HALT did not complete\n");
5063                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5064
5065                 memset(&l5_data, 0, sizeof(l5_data));
5066                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5067                         cid, NONE_CONNECTION_TYPE, &l5_data);
5068                 msleep(10);
5069         }
5070         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5071 }
5072
5073 static int cnic_register_netdev(struct cnic_dev *dev)
5074 {
5075         struct cnic_local *cp = dev->cnic_priv;
5076         struct cnic_eth_dev *ethdev = cp->ethdev;
5077         int err;
5078
5079         if (!ethdev)
5080                 return -ENODEV;
5081
5082         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5083                 return 0;
5084
5085         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5086         if (err)
5087                 netdev_err(dev->netdev, "register_cnic failed\n");
5088
5089         return err;
5090 }
5091
5092 static void cnic_unregister_netdev(struct cnic_dev *dev)
5093 {
5094         struct cnic_local *cp = dev->cnic_priv;
5095         struct cnic_eth_dev *ethdev = cp->ethdev;
5096
5097         if (!ethdev)
5098                 return;
5099
5100         ethdev->drv_unregister_cnic(dev->netdev);
5101 }
5102
5103 static int cnic_start_hw(struct cnic_dev *dev)
5104 {
5105         struct cnic_local *cp = dev->cnic_priv;
5106         struct cnic_eth_dev *ethdev = cp->ethdev;
5107         int err;
5108
5109         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5110                 return -EALREADY;
5111
5112         dev->regview = ethdev->io_base;
5113         pci_dev_get(dev->pcidev);
5114         cp->func = PCI_FUNC(dev->pcidev->devfn);
5115         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5116         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5117
5118         err = cp->alloc_resc(dev);
5119         if (err) {
5120                 netdev_err(dev->netdev, "allocate resource failure\n");
5121                 goto err1;
5122         }
5123
5124         err = cp->start_hw(dev);
5125         if (err)
5126                 goto err1;
5127
5128         err = cnic_cm_open(dev);
5129         if (err)
5130                 goto err1;
5131
5132         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5133
5134         cp->enable_int(dev);
5135
5136         return 0;
5137
5138 err1:
5139         cp->free_resc(dev);
5140         pci_dev_put(dev->pcidev);
5141         return err;
5142 }
5143
5144 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5145 {
5146         cnic_disable_bnx2_int_sync(dev);
5147
5148         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5149         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5150
5151         cnic_init_context(dev, KWQ_CID);
5152         cnic_init_context(dev, KCQ_CID);
5153
5154         cnic_setup_5709_context(dev, 0);
5155         cnic_free_irq(dev);
5156
5157         cnic_free_resc(dev);
5158 }
5159
5160
5161 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5162 {
5163         struct cnic_local *cp = dev->cnic_priv;
5164
5165         cnic_free_irq(dev);
5166         *cp->kcq1.hw_prod_idx_ptr = 0;
5167         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5168                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5169         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5170         cnic_free_resc(dev);
5171 }
5172
5173 static void cnic_stop_hw(struct cnic_dev *dev)
5174 {
5175         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5176                 struct cnic_local *cp = dev->cnic_priv;
5177                 int i = 0;
5178
5179                 /* Need to wait for the ring shutdown event to complete
5180                  * before clearing the CNIC_UP flag.
5181                  */
5182                 while (cp->udev->uio_dev != -1 && i < 15) {
5183                         msleep(100);
5184                         i++;
5185                 }
5186                 cnic_shutdown_rings(dev);
5187                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5188                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
5189                 synchronize_rcu();
5190                 cnic_cm_shutdown(dev);
5191                 cp->stop_hw(dev);
5192                 pci_dev_put(dev->pcidev);
5193         }
5194 }
5195
5196 static void cnic_free_dev(struct cnic_dev *dev)
5197 {
5198         int i = 0;
5199
5200         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5201                 msleep(100);
5202                 i++;
5203         }
5204         if (atomic_read(&dev->ref_count) != 0)
5205                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5206
5207         netdev_info(dev->netdev, "Removed CNIC device\n");
5208         dev_put(dev->netdev);
5209         kfree(dev);
5210 }
5211
5212 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5213                                        struct pci_dev *pdev)
5214 {
5215         struct cnic_dev *cdev;
5216         struct cnic_local *cp;
5217         int alloc_size;
5218
5219         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5220
5221         cdev = kzalloc(alloc_size , GFP_KERNEL);
5222         if (cdev == NULL) {
5223                 netdev_err(dev, "allocate dev struct failure\n");
5224                 return NULL;
5225         }
5226
5227         cdev->netdev = dev;
5228         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5229         cdev->register_device = cnic_register_device;
5230         cdev->unregister_device = cnic_unregister_device;
5231         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5232
5233         cp = cdev->cnic_priv;
5234         cp->dev = cdev;
5235         cp->l2_single_buf_size = 0x400;
5236         cp->l2_rx_ring_size = 3;
5237
5238         spin_lock_init(&cp->cnic_ulp_lock);
5239
5240         netdev_info(dev, "Added CNIC device\n");
5241
5242         return cdev;
5243 }
5244
5245 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5246 {
5247         struct pci_dev *pdev;
5248         struct cnic_dev *cdev;
5249         struct cnic_local *cp;
5250         struct cnic_eth_dev *ethdev = NULL;
5251         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5252
5253         probe = symbol_get(bnx2_cnic_probe);
5254         if (probe) {
5255                 ethdev = (*probe)(dev);
5256                 symbol_put(bnx2_cnic_probe);
5257         }
5258         if (!ethdev)
5259                 return NULL;
5260
5261         pdev = ethdev->pdev;
5262         if (!pdev)
5263                 return NULL;
5264
5265         dev_hold(dev);
5266         pci_dev_get(pdev);
5267         if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5268             pdev->device == PCI_DEVICE_ID_NX2_5709S) {
5269                 u8 rev;
5270
5271                 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
5272                 if (rev < 0x10) {
5273                         pci_dev_put(pdev);
5274                         goto cnic_err;
5275                 }
5276         }
5277         pci_dev_put(pdev);
5278
5279         cdev = cnic_alloc_dev(dev, pdev);
5280         if (cdev == NULL)
5281                 goto cnic_err;
5282
5283         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5284         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5285
5286         cp = cdev->cnic_priv;
5287         cp->ethdev = ethdev;
5288         cdev->pcidev = pdev;
5289         cp->chip_id = ethdev->chip_id;
5290
5291         cp->cnic_ops = &cnic_bnx2_ops;
5292         cp->start_hw = cnic_start_bnx2_hw;
5293         cp->stop_hw = cnic_stop_bnx2_hw;
5294         cp->setup_pgtbl = cnic_setup_page_tbl;
5295         cp->alloc_resc = cnic_alloc_bnx2_resc;
5296         cp->free_resc = cnic_free_resc;
5297         cp->start_cm = cnic_cm_init_bnx2_hw;
5298         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5299         cp->enable_int = cnic_enable_bnx2_int;
5300         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5301         cp->close_conn = cnic_close_bnx2_conn;
5302         cp->next_idx = cnic_bnx2_next_idx;
5303         cp->hw_idx = cnic_bnx2_hw_idx;
5304         return cdev;
5305
5306 cnic_err:
5307         dev_put(dev);
5308         return NULL;
5309 }
5310
5311 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5312 {
5313         struct pci_dev *pdev;
5314         struct cnic_dev *cdev;
5315         struct cnic_local *cp;
5316         struct cnic_eth_dev *ethdev = NULL;
5317         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5318
5319         probe = symbol_get(bnx2x_cnic_probe);
5320         if (probe) {
5321                 ethdev = (*probe)(dev);
5322                 symbol_put(bnx2x_cnic_probe);
5323         }
5324         if (!ethdev)
5325                 return NULL;
5326
5327         pdev = ethdev->pdev;
5328         if (!pdev)
5329                 return NULL;
5330
5331         dev_hold(dev);
5332         cdev = cnic_alloc_dev(dev, pdev);
5333         if (cdev == NULL) {
5334                 dev_put(dev);
5335                 return NULL;
5336         }
5337
5338         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5339         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5340
5341         cp = cdev->cnic_priv;
5342         cp->ethdev = ethdev;
5343         cdev->pcidev = pdev;
5344         cp->chip_id = ethdev->chip_id;
5345
5346         cp->cnic_ops = &cnic_bnx2x_ops;
5347         cp->start_hw = cnic_start_bnx2x_hw;
5348         cp->stop_hw = cnic_stop_bnx2x_hw;
5349         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5350         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5351         cp->free_resc = cnic_free_resc;
5352         cp->start_cm = cnic_cm_init_bnx2x_hw;
5353         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5354         cp->enable_int = cnic_enable_bnx2x_int;
5355         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5356         if (BNX2X_CHIP_IS_E2(cp->chip_id))
5357                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5358         else
5359                 cp->ack_int = cnic_ack_bnx2x_msix;
5360         cp->close_conn = cnic_close_bnx2x_conn;
5361         cp->next_idx = cnic_bnx2x_next_idx;
5362         cp->hw_idx = cnic_bnx2x_hw_idx;
5363         return cdev;
5364 }
5365
5366 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5367 {
5368         struct ethtool_drvinfo drvinfo;
5369         struct cnic_dev *cdev = NULL;
5370
5371         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5372                 memset(&drvinfo, 0, sizeof(drvinfo));
5373                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5374
5375                 if (!strcmp(drvinfo.driver, "bnx2"))
5376                         cdev = init_bnx2_cnic(dev);
5377                 if (!strcmp(drvinfo.driver, "bnx2x"))
5378                         cdev = init_bnx2x_cnic(dev);
5379                 if (cdev) {
5380                         write_lock(&cnic_dev_lock);
5381                         list_add(&cdev->list, &cnic_dev_list);
5382                         write_unlock(&cnic_dev_lock);
5383                 }
5384         }
5385         return cdev;
5386 }
5387
5388 /**
5389  * netdev event handler
5390  */
5391 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5392                                                          void *ptr)
5393 {
5394         struct net_device *netdev = ptr;
5395         struct cnic_dev *dev;
5396         int if_type;
5397         int new_dev = 0;
5398
5399         dev = cnic_from_netdev(netdev);
5400
5401         if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
5402                 /* Check for the hot-plug device */
5403                 dev = is_cnic_dev(netdev);
5404                 if (dev) {
5405                         new_dev = 1;
5406                         cnic_hold(dev);
5407                 }
5408         }
5409         if (dev) {
5410                 struct cnic_local *cp = dev->cnic_priv;
5411
5412                 if (new_dev)
5413                         cnic_ulp_init(dev);
5414                 else if (event == NETDEV_UNREGISTER)
5415                         cnic_ulp_exit(dev);
5416
5417                 if (event == NETDEV_UP) {
5418                         if (cnic_register_netdev(dev) != 0) {
5419                                 cnic_put(dev);
5420                                 goto done;
5421                         }
5422                         if (!cnic_start_hw(dev))
5423                                 cnic_ulp_start(dev);
5424                 }
5425
5426                 rcu_read_lock();
5427                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5428                         struct cnic_ulp_ops *ulp_ops;
5429                         void *ctx;
5430
5431                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
5432                         if (!ulp_ops || !ulp_ops->indicate_netevent)
5433                                 continue;
5434
5435                         ctx = cp->ulp_handle[if_type];
5436
5437                         ulp_ops->indicate_netevent(ctx, event);
5438                 }
5439                 rcu_read_unlock();
5440
5441                 if (event == NETDEV_GOING_DOWN) {
5442                         cnic_ulp_stop(dev);
5443                         cnic_stop_hw(dev);
5444                         cnic_unregister_netdev(dev);
5445                 } else if (event == NETDEV_UNREGISTER) {
5446                         write_lock(&cnic_dev_lock);
5447                         list_del_init(&dev->list);
5448                         write_unlock(&cnic_dev_lock);
5449
5450                         cnic_put(dev);
5451                         cnic_free_dev(dev);
5452                         goto done;
5453                 }
5454                 cnic_put(dev);
5455         }
5456 done:
5457         return NOTIFY_DONE;
5458 }
5459
5460 static struct notifier_block cnic_netdev_notifier = {
5461         .notifier_call = cnic_netdev_event
5462 };
5463
5464 static void cnic_release(void)
5465 {
5466         struct cnic_dev *dev;
5467         struct cnic_uio_dev *udev;
5468
5469         while (!list_empty(&cnic_dev_list)) {
5470                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
5471                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5472                         cnic_ulp_stop(dev);
5473                         cnic_stop_hw(dev);
5474                 }
5475
5476                 cnic_ulp_exit(dev);
5477                 cnic_unregister_netdev(dev);
5478                 list_del_init(&dev->list);
5479                 cnic_free_dev(dev);
5480         }
5481         while (!list_empty(&cnic_udev_list)) {
5482                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5483                                   list);
5484                 cnic_free_uio(udev);
5485         }
5486 }
5487
5488 static int __init cnic_init(void)
5489 {
5490         int rc = 0;
5491
5492         pr_info("%s", version);
5493
5494         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5495         if (rc) {
5496                 cnic_release();
5497                 return rc;
5498         }
5499
5500         cnic_wq = create_singlethread_workqueue("cnic_wq");
5501         if (!cnic_wq) {
5502                 cnic_release();
5503                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5504                 return -ENOMEM;
5505         }
5506
5507         return 0;
5508 }
5509
5510 static void __exit cnic_exit(void)
5511 {
5512         unregister_netdevice_notifier(&cnic_netdev_notifier);
5513         cnic_release();
5514         destroy_workqueue(cnic_wq);
5515 }
5516
5517 module_init(cnic_init);
5518 module_exit(cnic_exit);