Pileus Git - ~andy/linux/blob - drivers/net/ethernet/broadcom/cnic.c

   1 /* cnic.c: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2012 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 #include <linux/prefetch.h>
  31 #include <linux/random.h>
  32 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
  33 #define BCM_VLAN 1
  34 #endif
  35 #include <net/ip.h>
  36 #include <net/tcp.h>
  37 #include <net/route.h>
  38 #include <net/ipv6.h>
  39 #include <net/ip6_route.h>
  40 #include <net/ip6_checksum.h>
  41 #include <scsi/iscsi_if.h>
  42
  43 #include "cnic_if.h"
  44 #include "bnx2.h"
  45 #include "bnx2x/bnx2x_reg.h"
  46 #include "bnx2x/bnx2x_fw_defs.h"
  47 #include "bnx2x/bnx2x_hsi.h"
  48 #include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
  49 #include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
  50 #include "../../../scsi/bnx2fc/bnx2fc_constants.h"
  51 #include "cnic.h"
  52 #include "cnic_defs.h"
  53
  54 #define DRV_MODULE_NAME         "cnic"
  55
  56 static char version[] __devinitdata =
  57         "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  58
  59 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  60               "Chen (zongxi@broadcom.com");
  61 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
  62 MODULE_LICENSE("GPL");
  63 MODULE_VERSION(CNIC_MODULE_VERSION);
  64
  65 /* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
  66 static LIST_HEAD(cnic_dev_list);
  67 static LIST_HEAD(cnic_udev_list);
  68 static DEFINE_RWLOCK(cnic_dev_lock);
  69 static DEFINE_MUTEX(cnic_lock);
  70
  71 static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  72
  73 /* helper function, assuming cnic_lock is held */
  74 static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
  75 {
  76         return rcu_dereference_protected(cnic_ulp_tbl[type],
  77                                          lockdep_is_held(&cnic_lock));
  78 }
  79
  80 static int cnic_service_bnx2(void *, void *);
  81 static int cnic_service_bnx2x(void *, void *);
  82 static int cnic_ctl(void *, struct cnic_ctl_info *);
  83
  84 static struct cnic_ops cnic_bnx2_ops = {
  85         .cnic_owner     = THIS_MODULE,
  86         .cnic_handler   = cnic_service_bnx2,
  87         .cnic_ctl       = cnic_ctl,
  88 };
  89
  90 static struct cnic_ops cnic_bnx2x_ops = {
  91         .cnic_owner     = THIS_MODULE,
  92         .cnic_handler   = cnic_service_bnx2x,
  93         .cnic_ctl       = cnic_ctl,
  94 };
  95
  96 static struct workqueue_struct *cnic_wq;
  97
  98 static void cnic_shutdown_rings(struct cnic_dev *);
  99 static void cnic_init_rings(struct cnic_dev *);
 100 static int cnic_cm_set_pg(struct cnic_sock *);
 101
 102 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
 103 {
 104         struct cnic_uio_dev *udev = uinfo->priv;
 105         struct cnic_dev *dev;
 106
 107         if (!capable(CAP_NET_ADMIN))
 108                 return -EPERM;
 109
 110         if (udev->uio_dev != -1)
 111                 return -EBUSY;
 112
 113         rtnl_lock();
 114         dev = udev->dev;
 115
 116         if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 117                 rtnl_unlock();
 118                 return -ENODEV;
 119         }
 120
 121         udev->uio_dev = iminor(inode);
 122
 123         cnic_shutdown_rings(dev);
 124         cnic_init_rings(dev);
 125         rtnl_unlock();
 126
 127         return 0;
 128 }
 129
 130 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 131 {
 132         struct cnic_uio_dev *udev = uinfo->priv;
 133
 134         udev->uio_dev = -1;
 135         return 0;
 136 }
 137
 138 static inline void cnic_hold(struct cnic_dev *dev)
 139 {
 140         atomic_inc(&dev->ref_count);
 141 }
 142
 143 static inline void cnic_put(struct cnic_dev *dev)
 144 {
 145         atomic_dec(&dev->ref_count);
 146 }
 147
 148 static inline void csk_hold(struct cnic_sock *csk)
 149 {
 150         atomic_inc(&csk->ref_count);
 151 }
 152
 153 static inline void csk_put(struct cnic_sock *csk)
 154 {
 155         atomic_dec(&csk->ref_count);
 156 }
 157
 158 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 159 {
 160         struct cnic_dev *cdev;
 161
 162         read_lock(&cnic_dev_lock);
 163         list_for_each_entry(cdev, &cnic_dev_list, list) {
 164                 if (netdev == cdev->netdev) {
 165                         cnic_hold(cdev);
 166                         read_unlock(&cnic_dev_lock);
 167                         return cdev;
 168                 }
 169         }
 170         read_unlock(&cnic_dev_lock);
 171         return NULL;
 172 }
 173
 174 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 175 {
 176         atomic_inc(&ulp_ops->ref_count);
 177 }
 178
 179 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 180 {
 181         atomic_dec(&ulp_ops->ref_count);
 182 }
 183
 184 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 185 {
 186         struct cnic_local *cp = dev->cnic_priv;
 187         struct cnic_eth_dev *ethdev = cp->ethdev;
 188         struct drv_ctl_info info;
 189         struct drv_ctl_io *io = &info.data.io;
 190
 191         info.cmd = DRV_CTL_CTX_WR_CMD;
 192         io->cid_addr = cid_addr;
 193         io->offset = off;
 194         io->data = val;
 195         ethdev->drv_ctl(dev->netdev, &info);
 196 }
 197
 198 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 199 {
 200         struct cnic_local *cp = dev->cnic_priv;
 201         struct cnic_eth_dev *ethdev = cp->ethdev;
 202         struct drv_ctl_info info;
 203         struct drv_ctl_io *io = &info.data.io;
 204
 205         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 206         io->offset = off;
 207         io->dma_addr = addr;
 208         ethdev->drv_ctl(dev->netdev, &info);
 209 }
 210
 211 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 212 {
 213         struct cnic_local *cp = dev->cnic_priv;
 214         struct cnic_eth_dev *ethdev = cp->ethdev;
 215         struct drv_ctl_info info;
 216         struct drv_ctl_l2_ring *ring = &info.data.ring;
 217
 218         if (start)
 219                 info.cmd = DRV_CTL_START_L2_CMD;
 220         else
 221                 info.cmd = DRV_CTL_STOP_L2_CMD;
 222
 223         ring->cid = cid;
 224         ring->client_id = cl_id;
 225         ethdev->drv_ctl(dev->netdev, &info);
 226 }
 227
 228 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 229 {
 230         struct cnic_local *cp = dev->cnic_priv;
 231         struct cnic_eth_dev *ethdev = cp->ethdev;
 232         struct drv_ctl_info info;
 233         struct drv_ctl_io *io = &info.data.io;
 234
 235         info.cmd = DRV_CTL_IO_WR_CMD;
 236         io->offset = off;
 237         io->data = val;
 238         ethdev->drv_ctl(dev->netdev, &info);
 239 }
 240
 241 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 242 {
 243         struct cnic_local *cp = dev->cnic_priv;
 244         struct cnic_eth_dev *ethdev = cp->ethdev;
 245         struct drv_ctl_info info;
 246         struct drv_ctl_io *io = &info.data.io;
 247
 248         info.cmd = DRV_CTL_IO_RD_CMD;
 249         io->offset = off;
 250         ethdev->drv_ctl(dev->netdev, &info);
 251         return io->data;
 252 }
 253
 254 static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg)
 255 {
 256         struct cnic_local *cp = dev->cnic_priv;
 257         struct cnic_eth_dev *ethdev = cp->ethdev;
 258         struct drv_ctl_info info;
 259
 260         if (reg)
 261                 info.cmd = DRV_CTL_ULP_REGISTER_CMD;
 262         else
 263                 info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;
 264
 265         info.data.ulp_type = ulp_type;
 266         ethdev->drv_ctl(dev->netdev, &info);
 267 }
 268
 269 static int cnic_in_use(struct cnic_sock *csk)
 270 {
 271         return test_bit(SK_F_INUSE, &csk->flags);
 272 }
 273
 274 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
 275 {
 276         struct cnic_local *cp = dev->cnic_priv;
 277         struct cnic_eth_dev *ethdev = cp->ethdev;
 278         struct drv_ctl_info info;
 279
 280         info.cmd = cmd;
 281         info.data.credit.credit_count = count;
 282         ethdev->drv_ctl(dev->netdev, &info);
 283 }
 284
 285 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 286 {
 287         u32 i;
 288
 289         for (i = 0; i < cp->max_cid_space; i++) {
 290                 if (cp->ctx_tbl[i].cid == cid) {
 291                         *l5_cid = i;
 292                         return 0;
 293                 }
 294         }
 295         return -EINVAL;
 296 }
 297
 298 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 299                            struct cnic_sock *csk)
 300 {
 301         struct iscsi_path path_req;
 302         char *buf = NULL;
 303         u16 len = 0;
 304         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 305         struct cnic_ulp_ops *ulp_ops;
 306         struct cnic_uio_dev *udev = cp->udev;
 307         int rc = 0, retry = 0;
 308
 309         if (!udev || udev->uio_dev == -1)
 310                 return -ENODEV;
 311
 312         if (csk) {
 313                 len = sizeof(path_req);
 314                 buf = (char *) &path_req;
 315                 memset(&path_req, 0, len);
 316
 317                 msg_type = ISCSI_KEVENT_PATH_REQ;
 318                 path_req.handle = (u64) csk->l5_cid;
 319                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 320                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 321                                sizeof(struct in6_addr));
 322                         path_req.ip_addr_len = 16;
 323                 } else {
 324                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 325                                sizeof(struct in_addr));
 326                         path_req.ip_addr_len = 4;
 327                 }
 328                 path_req.vlan_id = csk->vlan_id;
 329                 path_req.pmtu = csk->mtu;
 330         }
 331
 332         while (retry < 3) {
 333                 rc = 0;
 334                 rcu_read_lock();
 335                 ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
 336                 if (ulp_ops)
 337                         rc = ulp_ops->iscsi_nl_send_msg(
 338                                 cp->ulp_handle[CNIC_ULP_ISCSI],
 339                                 msg_type, buf, len);
 340                 rcu_read_unlock();
 341                 if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
 342                         break;
 343
 344                 msleep(100);
 345                 retry++;
 346         }
 347         return rc;
 348 }
 349
 350 static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
 351
 352 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 353                                   char *buf, u16 len)
 354 {
 355         int rc = -EINVAL;
 356
 357         switch (msg_type) {
 358         case ISCSI_UEVENT_PATH_UPDATE: {
 359                 struct cnic_local *cp;
 360                 u32 l5_cid;
 361                 struct cnic_sock *csk;
 362                 struct iscsi_path *path_resp;
 363
 364                 if (len < sizeof(*path_resp))
 365                         break;
 366
 367                 path_resp = (struct iscsi_path *) buf;
 368                 cp = dev->cnic_priv;
 369                 l5_cid = (u32) path_resp->handle;
 370                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 371                         break;
 372
 373                 rcu_read_lock();
 374                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
 375                         rc = -ENODEV;
 376                         rcu_read_unlock();
 377                         break;
 378                 }
 379                 csk = &cp->csk_tbl[l5_cid];
 380                 csk_hold(csk);
 381                 if (cnic_in_use(csk) &&
 382                     test_bit(SK_F_CONNECT_START, &csk->flags)) {
 383
 384                         csk->vlan_id = path_resp->vlan_id;
 385
 386                         memcpy(csk->ha, path_resp->mac_addr, 6);
 387                         if (test_bit(SK_F_IPV6, &csk->flags))
 388                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 389                                        sizeof(struct in6_addr));
 390                         else
 391                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 392                                        sizeof(struct in_addr));
 393
 394                         if (is_valid_ether_addr(csk->ha)) {
 395                                 cnic_cm_set_pg(csk);
 396                         } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
 397                                 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 398
 399                                 cnic_cm_upcall(cp, csk,
 400                                         L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
 401                                 clear_bit(SK_F_CONNECT_START, &csk->flags);
 402                         }
 403                 }
 404                 csk_put(csk);
 405                 rcu_read_unlock();
 406                 rc = 0;
 407         }
 408         }
 409
 410         return rc;
 411 }
 412
 413 static int cnic_offld_prep(struct cnic_sock *csk)
 414 {
 415         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 416                 return 0;
 417
 418         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 419                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 420                 return 0;
 421         }
 422
 423         return 1;
 424 }
 425
 426 static int cnic_close_prep(struct cnic_sock *csk)
 427 {
 428         clear_bit(SK_F_CONNECT_START, &csk->flags);
 429         smp_mb__after_clear_bit();
 430
 431         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 432                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 433                         msleep(1);
 434
 435                 return 1;
 436         }
 437         return 0;
 438 }
 439
 440 static int cnic_abort_prep(struct cnic_sock *csk)
 441 {
 442         clear_bit(SK_F_CONNECT_START, &csk->flags);
 443         smp_mb__after_clear_bit();
 444
 445         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 446                 msleep(1);
 447
 448         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 449                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 450                 return 1;
 451         }
 452
 453         return 0;
 454 }
 455
 456 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 457 {
 458         struct cnic_dev *dev;
 459
 460         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 461                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 462                 return -EINVAL;
 463         }
 464         mutex_lock(&cnic_lock);
 465         if (cnic_ulp_tbl_prot(ulp_type)) {
 466                 pr_err("%s: Type %d has already been registered\n",
 467                        __func__, ulp_type);
 468                 mutex_unlock(&cnic_lock);
 469                 return -EBUSY;
 470         }
 471
 472         read_lock(&cnic_dev_lock);
 473         list_for_each_entry(dev, &cnic_dev_list, list) {
 474                 struct cnic_local *cp = dev->cnic_priv;
 475
 476                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 477         }
 478         read_unlock(&cnic_dev_lock);
 479
 480         atomic_set(&ulp_ops->ref_count, 0);
 481         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 482         mutex_unlock(&cnic_lock);
 483
 484         /* Prevent race conditions with netdev_event */
 485         rtnl_lock();
 486         list_for_each_entry(dev, &cnic_dev_list, list) {
 487                 struct cnic_local *cp = dev->cnic_priv;
 488
 489                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 490                         ulp_ops->cnic_init(dev);
 491         }
 492         rtnl_unlock();
 493
 494         return 0;
 495 }
 496
 497 int cnic_unregister_driver(int ulp_type)
 498 {
 499         struct cnic_dev *dev;
 500         struct cnic_ulp_ops *ulp_ops;
 501         int i = 0;
 502
 503         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 504                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 505                 return -EINVAL;
 506         }
 507         mutex_lock(&cnic_lock);
 508         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 509         if (!ulp_ops) {
 510                 pr_err("%s: Type %d has not been registered\n",
 511                        __func__, ulp_type);
 512                 goto out_unlock;
 513         }
 514         read_lock(&cnic_dev_lock);
 515         list_for_each_entry(dev, &cnic_dev_list, list) {
 516                 struct cnic_local *cp = dev->cnic_priv;
 517
 518                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 519                         pr_err("%s: Type %d still has devices registered\n",
 520                                __func__, ulp_type);
 521                         read_unlock(&cnic_dev_lock);
 522                         goto out_unlock;
 523                 }
 524         }
 525         read_unlock(&cnic_dev_lock);
 526
 527         RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);
 528
 529         mutex_unlock(&cnic_lock);
 530         synchronize_rcu();
 531         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 532                 msleep(100);
 533                 i++;
 534         }
 535
 536         if (atomic_read(&ulp_ops->ref_count) != 0)
 537                 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
 538         return 0;
 539
 540 out_unlock:
 541         mutex_unlock(&cnic_lock);
 542         return -EINVAL;
 543 }
 544
 545 static int cnic_start_hw(struct cnic_dev *);
 546 static void cnic_stop_hw(struct cnic_dev *);
 547
 548 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 549                                 void *ulp_ctx)
 550 {
 551         struct cnic_local *cp = dev->cnic_priv;
 552         struct cnic_ulp_ops *ulp_ops;
 553
 554         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 555                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 556                 return -EINVAL;
 557         }
 558         mutex_lock(&cnic_lock);
 559         if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
 560                 pr_err("%s: Driver with type %d has not been registered\n",
 561                        __func__, ulp_type);
 562                 mutex_unlock(&cnic_lock);
 563                 return -EAGAIN;
 564         }
 565         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 566                 pr_err("%s: Type %d has already been registered to this device\n",
 567                        __func__, ulp_type);
 568                 mutex_unlock(&cnic_lock);
 569                 return -EBUSY;
 570         }
 571
 572         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 573         cp->ulp_handle[ulp_type] = ulp_ctx;
 574         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 575         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 576         cnic_hold(dev);
 577
 578         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 579                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 580                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 581
 582         mutex_unlock(&cnic_lock);
 583
 584         cnic_ulp_ctl(dev, ulp_type, true);
 585
 586         return 0;
 587
 588 }
 589 EXPORT_SYMBOL(cnic_register_driver);
 590
 591 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 592 {
 593         struct cnic_local *cp = dev->cnic_priv;
 594         int i = 0;
 595
 596         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 597                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 598                 return -EINVAL;
 599         }
 600         mutex_lock(&cnic_lock);
 601         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 602                 RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
 603                 cnic_put(dev);
 604         } else {
 605                 pr_err("%s: device not registered to this ulp type %d\n",
 606                        __func__, ulp_type);
 607                 mutex_unlock(&cnic_lock);
 608                 return -EINVAL;
 609         }
 610         mutex_unlock(&cnic_lock);
 611
 612         if (ulp_type == CNIC_ULP_ISCSI)
 613                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 614
 615         synchronize_rcu();
 616
 617         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 618                i < 20) {
 619                 msleep(100);
 620                 i++;
 621         }
 622         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 623                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 624
 625         cnic_ulp_ctl(dev, ulp_type, false);
 626
 627         return 0;
 628 }
 629 EXPORT_SYMBOL(cnic_unregister_driver);
 630
 631 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
 632                             u32 next)
 633 {
 634         id_tbl->start = start_id;
 635         id_tbl->max = size;
 636         id_tbl->next = next;
 637         spin_lock_init(&id_tbl->lock);
 638         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 639         if (!id_tbl->table)
 640                 return -ENOMEM;
 641
 642         return 0;
 643 }
 644
 645 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 646 {
 647         kfree(id_tbl->table);
 648         id_tbl->table = NULL;
 649 }
 650
 651 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 652 {
 653         int ret = -1;
 654
 655         id -= id_tbl->start;
 656         if (id >= id_tbl->max)
 657                 return ret;
 658
 659         spin_lock(&id_tbl->lock);
 660         if (!test_bit(id, id_tbl->table)) {
 661                 set_bit(id, id_tbl->table);
 662                 ret = 0;
 663         }
 664         spin_unlock(&id_tbl->lock);
 665         return ret;
 666 }
 667
 668 /* Returns -1 if not successful */
 669 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 670 {
 671         u32 id;
 672
 673         spin_lock(&id_tbl->lock);
 674         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 675         if (id >= id_tbl->max) {
 676                 id = -1;
 677                 if (id_tbl->next != 0) {
 678                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 679                         if (id >= id_tbl->next)
 680                                 id = -1;
 681                 }
 682         }
 683
 684         if (id < id_tbl->max) {
 685                 set_bit(id, id_tbl->table);
 686                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 687                 id += id_tbl->start;
 688         }
 689
 690         spin_unlock(&id_tbl->lock);
 691
 692         return id;
 693 }
 694
 695 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 696 {
 697         if (id == -1)
 698                 return;
 699
 700         id -= id_tbl->start;
 701         if (id >= id_tbl->max)
 702                 return;
 703
 704         clear_bit(id, id_tbl->table);
 705 }
 706
 707 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 708 {
 709         int i;
 710
 711         if (!dma->pg_arr)
 712                 return;
 713
 714         for (i = 0; i < dma->num_pages; i++) {
 715                 if (dma->pg_arr[i]) {
 716                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
 717                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 718                         dma->pg_arr[i] = NULL;
 719                 }
 720         }
 721         if (dma->pgtbl) {
 722                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 723                                   dma->pgtbl, dma->pgtbl_map);
 724                 dma->pgtbl = NULL;
 725         }
 726         kfree(dma->pg_arr);
 727         dma->pg_arr = NULL;
 728         dma->num_pages = 0;
 729 }
 730
 731 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 732 {
 733         int i;
 734         __le32 *page_table = (__le32 *) dma->pgtbl;
 735
 736         for (i = 0; i < dma->num_pages; i++) {
 737                 /* Each entry needs to be in big endian format. */
 738                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 739                 page_table++;
 740                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 741                 page_table++;
 742         }
 743 }
 744
 745 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 746 {
 747         int i;
 748         __le32 *page_table = (__le32 *) dma->pgtbl;
 749
 750         for (i = 0; i < dma->num_pages; i++) {
 751                 /* Each entry needs to be in little endian format. */
 752                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 753                 page_table++;
 754                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 755                 page_table++;
 756         }
 757 }
 758
 759 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 760                           int pages, int use_pg_tbl)
 761 {
 762         int i, size;
 763         struct cnic_local *cp = dev->cnic_priv;
 764
 765         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 766         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 767         if (dma->pg_arr == NULL)
 768                 return -ENOMEM;
 769
 770         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 771         dma->num_pages = pages;
 772
 773         for (i = 0; i < pages; i++) {
 774                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 775                                                     BCM_PAGE_SIZE,
 776                                                     &dma->pg_map_arr[i],
 777                                                     GFP_ATOMIC);
 778                 if (dma->pg_arr[i] == NULL)
 779                         goto error;
 780         }
 781         if (!use_pg_tbl)
 782                 return 0;
 783
 784         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 785                           ~(BCM_PAGE_SIZE - 1);
 786         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 787                                         &dma->pgtbl_map, GFP_ATOMIC);
 788         if (dma->pgtbl == NULL)
 789                 goto error;
 790
 791         cp->setup_pgtbl(dev, dma);
 792
 793         return 0;
 794
 795 error:
 796         cnic_free_dma(dev, dma);
 797         return -ENOMEM;
 798 }
 799
 800 static void cnic_free_context(struct cnic_dev *dev)
 801 {
 802         struct cnic_local *cp = dev->cnic_priv;
 803         int i;
 804
 805         for (i = 0; i < cp->ctx_blks; i++) {
 806                 if (cp->ctx_arr[i].ctx) {
 807                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 808                                           cp->ctx_arr[i].ctx,
 809                                           cp->ctx_arr[i].mapping);
 810                         cp->ctx_arr[i].ctx = NULL;
 811                 }
 812         }
 813 }
 814
 815 static void __cnic_free_uio(struct cnic_uio_dev *udev)
 816 {
 817         uio_unregister_device(&udev->cnic_uinfo);
 818
 819         if (udev->l2_buf) {
 820                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 821                                   udev->l2_buf, udev->l2_buf_map);
 822                 udev->l2_buf = NULL;
 823         }
 824
 825         if (udev->l2_ring) {
 826                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 827                                   udev->l2_ring, udev->l2_ring_map);
 828                 udev->l2_ring = NULL;
 829         }
 830
 831         pci_dev_put(udev->pdev);
 832         kfree(udev);
 833 }
 834
 835 static void cnic_free_uio(struct cnic_uio_dev *udev)
 836 {
 837         if (!udev)
 838                 return;
 839
 840         write_lock(&cnic_dev_lock);
 841         list_del_init(&udev->list);
 842         write_unlock(&cnic_dev_lock);
 843         __cnic_free_uio(udev);
 844 }
 845
 846 static void cnic_free_resc(struct cnic_dev *dev)
 847 {
 848         struct cnic_local *cp = dev->cnic_priv;
 849         struct cnic_uio_dev *udev = cp->udev;
 850
 851         if (udev) {
 852                 udev->dev = NULL;
 853                 cp->udev = NULL;
 854         }
 855
 856         cnic_free_context(dev);
 857         kfree(cp->ctx_arr);
 858         cp->ctx_arr = NULL;
 859         cp->ctx_blks = 0;
 860
 861         cnic_free_dma(dev, &cp->gbl_buf_info);
 862         cnic_free_dma(dev, &cp->kwq_info);
 863         cnic_free_dma(dev, &cp->kwq_16_data_info);
 864         cnic_free_dma(dev, &cp->kcq2.dma);
 865         cnic_free_dma(dev, &cp->kcq1.dma);
 866         kfree(cp->iscsi_tbl);
 867         cp->iscsi_tbl = NULL;
 868         kfree(cp->ctx_tbl);
 869         cp->ctx_tbl = NULL;
 870
 871         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
 872         cnic_free_id_tbl(&cp->cid_tbl);
 873 }
 874
 875 static int cnic_alloc_context(struct cnic_dev *dev)
 876 {
 877         struct cnic_local *cp = dev->cnic_priv;
 878
 879         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 880                 int i, k, arr_size;
 881
 882                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 883                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 884                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 885                            sizeof(struct cnic_ctx);
 886                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 887                 if (cp->ctx_arr == NULL)
 888                         return -ENOMEM;
 889
 890                 k = 0;
 891                 for (i = 0; i < 2; i++) {
 892                         u32 j, reg, off, lo, hi;
 893
 894                         if (i == 0)
 895                                 off = BNX2_PG_CTX_MAP;
 896                         else
 897                                 off = BNX2_ISCSI_CTX_MAP;
 898
 899                         reg = cnic_reg_rd_ind(dev, off);
 900                         lo = reg >> 16;
 901                         hi = reg & 0xffff;
 902                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 903                                 cp->ctx_arr[k].cid = j;
 904                 }
 905
 906                 cp->ctx_blks = k;
 907                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 908                         cp->ctx_blks = 0;
 909                         return -ENOMEM;
 910                 }
 911
 912                 for (i = 0; i < cp->ctx_blks; i++) {
 913                         cp->ctx_arr[i].ctx =
 914                                 dma_alloc_coherent(&dev->pcidev->dev,
 915                                                    BCM_PAGE_SIZE,
 916                                                    &cp->ctx_arr[i].mapping,
 917                                                    GFP_KERNEL);
 918                         if (cp->ctx_arr[i].ctx == NULL)
 919                                 return -ENOMEM;
 920                 }
 921         }
 922         return 0;
 923 }
 924
 925 static u16 cnic_bnx2_next_idx(u16 idx)
 926 {
 927         return idx + 1;
 928 }
 929
 930 static u16 cnic_bnx2_hw_idx(u16 idx)
 931 {
 932         return idx;
 933 }
 934
 935 static u16 cnic_bnx2x_next_idx(u16 idx)
 936 {
 937         idx++;
 938         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 939                 idx++;
 940
 941         return idx;
 942 }
 943
 944 static u16 cnic_bnx2x_hw_idx(u16 idx)
 945 {
 946         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 947                 idx++;
 948         return idx;
 949 }
 950
 951 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
 952                           bool use_pg_tbl)
 953 {
 954         int err, i, use_page_tbl = 0;
 955         struct kcqe **kcq;
 956
 957         if (use_pg_tbl)
 958                 use_page_tbl = 1;
 959
 960         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
 961         if (err)
 962                 return err;
 963
 964         kcq = (struct kcqe **) info->dma.pg_arr;
 965         info->kcq = kcq;
 966
 967         info->next_idx = cnic_bnx2_next_idx;
 968         info->hw_idx = cnic_bnx2_hw_idx;
 969         if (use_pg_tbl)
 970                 return 0;
 971
 972         info->next_idx = cnic_bnx2x_next_idx;
 973         info->hw_idx = cnic_bnx2x_hw_idx;
 974
 975         for (i = 0; i < KCQ_PAGE_CNT; i++) {
 976                 struct bnx2x_bd_chain_next *next =
 977                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
 978                 int j = i + 1;
 979
 980                 if (j >= KCQ_PAGE_CNT)
 981                         j = 0;
 982                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
 983                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
 984         }
 985         return 0;
 986 }
 987
 988 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
 989 {
 990         struct cnic_local *cp = dev->cnic_priv;
 991         struct cnic_uio_dev *udev;
 992
 993         read_lock(&cnic_dev_lock);
 994         list_for_each_entry(udev, &cnic_udev_list, list) {
 995                 if (udev->pdev == dev->pcidev) {
 996                         udev->dev = dev;
 997                         cp->udev = udev;
 998                         read_unlock(&cnic_dev_lock);
 999                         return 0;
1000                 }
1001         }
1002         read_unlock(&cnic_dev_lock);
1003
1004         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
1005         if (!udev)
1006                 return -ENOMEM;
1007
1008         udev->uio_dev = -1;
1009
1010         udev->dev = dev;
1011         udev->pdev = dev->pcidev;
1012         udev->l2_ring_size = pages * BCM_PAGE_SIZE;
1013         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
1014                                            &udev->l2_ring_map,
1015                                            GFP_KERNEL | __GFP_COMP);
1016         if (!udev->l2_ring)
1017                 goto err_udev;
1018
1019         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
1020         udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
1021         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1022                                           &udev->l2_buf_map,
1023                                           GFP_KERNEL | __GFP_COMP);
1024         if (!udev->l2_buf)
1025                 goto err_dma;
1026
1027         write_lock(&cnic_dev_lock);
1028         list_add(&udev->list, &cnic_udev_list);
1029         write_unlock(&cnic_dev_lock);
1030
1031         pci_dev_get(udev->pdev);
1032
1033         cp->udev = udev;
1034
1035         return 0;
1036  err_dma:
1037         dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
1038                           udev->l2_ring, udev->l2_ring_map);
1039  err_udev:
1040         kfree(udev);
1041         return -ENOMEM;
1042 }
1043
1044 static int cnic_init_uio(struct cnic_dev *dev)
1045 {
1046         struct cnic_local *cp = dev->cnic_priv;
1047         struct cnic_uio_dev *udev = cp->udev;
1048         struct uio_info *uinfo;
1049         int ret = 0;
1050
1051         if (!udev)
1052                 return -ENOMEM;
1053
1054         uinfo = &udev->cnic_uinfo;
1055
1056         uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
1057         uinfo->mem[0].internal_addr = dev->regview;
1058         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1059
1060         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1061                 uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
1062                                                      TX_MAX_TSS_RINGS + 1);
1063                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1064                                         PAGE_MASK;
1065                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1066                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1067                 else
1068                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1069
1070                 uinfo->name = "bnx2_cnic";
1071         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1072                 uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);
1073
1074                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1075                         PAGE_MASK;
1076                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1077
1078                 uinfo->name = "bnx2x_cnic";
1079         }
1080
1081         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1082
1083         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1084         uinfo->mem[2].size = udev->l2_ring_size;
1085         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1086
1087         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1088         uinfo->mem[3].size = udev->l2_buf_size;
1089         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1090
1091         uinfo->version = CNIC_MODULE_VERSION;
1092         uinfo->irq = UIO_IRQ_CUSTOM;
1093
1094         uinfo->open = cnic_uio_open;
1095         uinfo->release = cnic_uio_close;
1096
1097         if (udev->uio_dev == -1) {
1098                 if (!uinfo->priv) {
1099                         uinfo->priv = udev;
1100
1101                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1102                 }
1103         } else {
1104                 cnic_init_rings(dev);
1105         }
1106
1107         return ret;
1108 }
1109
1110 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1111 {
1112         struct cnic_local *cp = dev->cnic_priv;
1113         int ret;
1114
1115         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1116         if (ret)
1117                 goto error;
1118         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1119
1120         ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1121         if (ret)
1122                 goto error;
1123
1124         ret = cnic_alloc_context(dev);
1125         if (ret)
1126                 goto error;
1127
1128         ret = cnic_alloc_uio_rings(dev, 2);
1129         if (ret)
1130                 goto error;
1131
1132         ret = cnic_init_uio(dev);
1133         if (ret)
1134                 goto error;
1135
1136         return 0;
1137
1138 error:
1139         cnic_free_resc(dev);
1140         return ret;
1141 }
1142
1143 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1144 {
1145         struct cnic_local *cp = dev->cnic_priv;
1146         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1147         int total_mem, blks, i;
1148
1149         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1150         blks = total_mem / ctx_blk_size;
1151         if (total_mem % ctx_blk_size)
1152                 blks++;
1153
1154         if (blks > cp->ethdev->ctx_tbl_len)
1155                 return -ENOMEM;
1156
1157         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1158         if (cp->ctx_arr == NULL)
1159                 return -ENOMEM;
1160
1161         cp->ctx_blks = blks;
1162         cp->ctx_blk_size = ctx_blk_size;
1163         if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1164                 cp->ctx_align = 0;
1165         else
1166                 cp->ctx_align = ctx_blk_size;
1167
1168         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1169
1170         for (i = 0; i < blks; i++) {
1171                 cp->ctx_arr[i].ctx =
1172                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1173                                            &cp->ctx_arr[i].mapping,
1174                                            GFP_KERNEL);
1175                 if (cp->ctx_arr[i].ctx == NULL)
1176                         return -ENOMEM;
1177
1178                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1179                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1180                                 cnic_free_context(dev);
1181                                 cp->ctx_blk_size += cp->ctx_align;
1182                                 i = -1;
1183                                 continue;
1184                         }
1185                 }
1186         }
1187         return 0;
1188 }
1189
1190 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1191 {
1192         struct cnic_local *cp = dev->cnic_priv;
1193         struct cnic_eth_dev *ethdev = cp->ethdev;
1194         u32 start_cid = ethdev->starting_cid;
1195         int i, j, n, ret, pages;
1196         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1197
1198         cp->iro_arr = ethdev->iro_arr;
1199
1200         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1201         cp->iscsi_start_cid = start_cid;
1202         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1203
1204         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1205                 cp->max_cid_space += dev->max_fcoe_conn;
1206                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1207                 if (!cp->fcoe_init_cid)
1208                         cp->fcoe_init_cid = 0x10;
1209         }
1210
1211         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1212                                 GFP_KERNEL);
1213         if (!cp->iscsi_tbl)
1214                 goto error;
1215
1216         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1217                                 cp->max_cid_space, GFP_KERNEL);
1218         if (!cp->ctx_tbl)
1219                 goto error;
1220
1221         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1222                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1223                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1224         }
1225
1226         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1227                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1228
1229         pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1230                 PAGE_SIZE;
1231
1232         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1233         if (ret)
1234                 return -ENOMEM;
1235
1236         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1237         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1238                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1239
1240                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1241                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1242                                                    off;
1243
1244                 if ((i % n) == (n - 1))
1245                         j++;
1246         }
1247
1248         ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1249         if (ret)
1250                 goto error;
1251
1252         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1253                 ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1254                 if (ret)
1255                         goto error;
1256         }
1257
1258         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1259         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1260         if (ret)
1261                 goto error;
1262
1263         ret = cnic_alloc_bnx2x_context(dev);
1264         if (ret)
1265                 goto error;
1266
1267         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1268
1269         cp->l2_rx_ring_size = 15;
1270
1271         ret = cnic_alloc_uio_rings(dev, 4);
1272         if (ret)
1273                 goto error;
1274
1275         ret = cnic_init_uio(dev);
1276         if (ret)
1277                 goto error;
1278
1279         return 0;
1280
1281 error:
1282         cnic_free_resc(dev);
1283         return -ENOMEM;
1284 }
1285
1286 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1287 {
1288         return cp->max_kwq_idx -
1289                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1290 }
1291
1292 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1293                                   u32 num_wqes)
1294 {
1295         struct cnic_local *cp = dev->cnic_priv;
1296         struct kwqe *prod_qe;
1297         u16 prod, sw_prod, i;
1298
1299         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1300                 return -EAGAIN;         /* bnx2 is down */
1301
1302         spin_lock_bh(&cp->cnic_ulp_lock);
1303         if (num_wqes > cnic_kwq_avail(cp) &&
1304             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1305                 spin_unlock_bh(&cp->cnic_ulp_lock);
1306                 return -EAGAIN;
1307         }
1308
1309         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1310
1311         prod = cp->kwq_prod_idx;
1312         sw_prod = prod & MAX_KWQ_IDX;
1313         for (i = 0; i < num_wqes; i++) {
1314                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1315                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1316                 prod++;
1317                 sw_prod = prod & MAX_KWQ_IDX;
1318         }
1319         cp->kwq_prod_idx = prod;
1320
1321         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1322
1323         spin_unlock_bh(&cp->cnic_ulp_lock);
1324         return 0;
1325 }
1326
1327 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1328                                    union l5cm_specific_data *l5_data)
1329 {
1330         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1331         dma_addr_t map;
1332
1333         map = ctx->kwqe_data_mapping;
1334         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1335         l5_data->phy_address.hi = (u64) map >> 32;
1336         return ctx->kwqe_data;
1337 }
1338
1339 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1340                                 u32 type, union l5cm_specific_data *l5_data)
1341 {
1342         struct cnic_local *cp = dev->cnic_priv;
1343         struct l5cm_spe kwqe;
1344         struct kwqe_16 *kwq[1];
1345         u16 type_16;
1346         int ret;
1347
1348         kwqe.hdr.conn_and_cmd_data =
1349                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1350                              BNX2X_HW_CID(cp, cid)));
1351
1352         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1353         type_16 |= (cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1354                    SPE_HDR_FUNCTION_ID;
1355
1356         kwqe.hdr.type = cpu_to_le16(type_16);
1357         kwqe.hdr.reserved1 = 0;
1358         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1359         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1360
1361         kwq[0] = (struct kwqe_16 *) &kwqe;
1362
1363         spin_lock_bh(&cp->cnic_ulp_lock);
1364         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1365         spin_unlock_bh(&cp->cnic_ulp_lock);
1366
1367         if (ret == 1)
1368                 return 0;
1369
1370         return ret;
1371 }
1372
1373 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1374                                    struct kcqe *cqes[], u32 num_cqes)
1375 {
1376         struct cnic_local *cp = dev->cnic_priv;
1377         struct cnic_ulp_ops *ulp_ops;
1378
1379         rcu_read_lock();
1380         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1381         if (likely(ulp_ops)) {
1382                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1383                                           cqes, num_cqes);
1384         }
1385         rcu_read_unlock();
1386 }
1387
1388 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1389 {
1390         struct cnic_local *cp = dev->cnic_priv;
1391         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1392         int hq_bds, pages;
1393         u32 pfid = cp->pfid;
1394
1395         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1396         cp->num_ccells = req1->num_ccells_per_conn;
1397         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1398                               cp->num_iscsi_tasks;
1399         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1400                         BNX2X_ISCSI_R2TQE_SIZE;
1401         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1402         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1403         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1404         cp->num_cqs = req1->num_cqs;
1405
1406         if (!dev->max_iscsi_conn)
1407                 return 0;
1408
1409         /* init Tstorm RAM */
1410         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1411                   req1->rq_num_wqes);
1412         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1413                   PAGE_SIZE);
1414         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1415                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1416         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1417                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1418                   req1->num_tasks_per_conn);
1419
1420         /* init Ustorm RAM */
1421         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1422                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1423                   req1->rq_buffer_size);
1424         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1425                   PAGE_SIZE);
1426         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1427                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1428         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1429                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1430                   req1->num_tasks_per_conn);
1431         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1432                   req1->rq_num_wqes);
1433         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1434                   req1->cq_num_wqes);
1435         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1436                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1437
1438         /* init Xstorm RAM */
1439         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1440                   PAGE_SIZE);
1441         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1442                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1443         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1444                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1445                   req1->num_tasks_per_conn);
1446         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1447                   hq_bds);
1448         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1449                   req1->num_tasks_per_conn);
1450         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1451                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1452
1453         /* init Cstorm RAM */
1454         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1455                   PAGE_SIZE);
1456         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1457                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1458         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1459                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1460                   req1->num_tasks_per_conn);
1461         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1462                   req1->cq_num_wqes);
1463         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1464                   hq_bds);
1465
1466         return 0;
1467 }
1468
1469 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1470 {
1471         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1472         struct cnic_local *cp = dev->cnic_priv;
1473         u32 pfid = cp->pfid;
1474         struct iscsi_kcqe kcqe;
1475         struct kcqe *cqes[1];
1476
1477         memset(&kcqe, 0, sizeof(kcqe));
1478         if (!dev->max_iscsi_conn) {
1479                 kcqe.completion_status =
1480                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1481                 goto done;
1482         }
1483
1484         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1485                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1486         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1487                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1488                 req2->error_bit_map[1]);
1489
1490         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1491                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1492         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1493                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1494         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1495                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1496                 req2->error_bit_map[1]);
1497
1498         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1499                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1500
1501         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1502
1503 done:
1504         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1505         cqes[0] = (struct kcqe *) &kcqe;
1506         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1507
1508         return 0;
1509 }
1510
1511 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1512 {
1513         struct cnic_local *cp = dev->cnic_priv;
1514         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1515
1516         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1517                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1518
1519                 cnic_free_dma(dev, &iscsi->hq_info);
1520                 cnic_free_dma(dev, &iscsi->r2tq_info);
1521                 cnic_free_dma(dev, &iscsi->task_array_info);
1522                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1523         } else {
1524                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1525         }
1526
1527         ctx->cid = 0;
1528 }
1529
1530 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1531 {
1532         u32 cid;
1533         int ret, pages;
1534         struct cnic_local *cp = dev->cnic_priv;
1535         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1536         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1537
1538         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1539                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1540                 if (cid == -1) {
1541                         ret = -ENOMEM;
1542                         goto error;
1543                 }
1544                 ctx->cid = cid;
1545                 return 0;
1546         }
1547
1548         cid = cnic_alloc_new_id(&cp->cid_tbl);
1549         if (cid == -1) {
1550                 ret = -ENOMEM;
1551                 goto error;
1552         }
1553
1554         ctx->cid = cid;
1555         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1556
1557         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1558         if (ret)
1559                 goto error;
1560
1561         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1562         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1563         if (ret)
1564                 goto error;
1565
1566         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1567         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1568         if (ret)
1569                 goto error;
1570
1571         return 0;
1572
1573 error:
1574         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1575         return ret;
1576 }
1577
1578 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1579                                 struct regpair *ctx_addr)
1580 {
1581         struct cnic_local *cp = dev->cnic_priv;
1582         struct cnic_eth_dev *ethdev = cp->ethdev;
1583         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1584         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1585         unsigned long align_off = 0;
1586         dma_addr_t ctx_map;
1587         void *ctx;
1588
1589         if (cp->ctx_align) {
1590                 unsigned long mask = cp->ctx_align - 1;
1591
1592                 if (cp->ctx_arr[blk].mapping & mask)
1593                         align_off = cp->ctx_align -
1594                                     (cp->ctx_arr[blk].mapping & mask);
1595         }
1596         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1597                 (off * BNX2X_CONTEXT_MEM_SIZE);
1598         ctx = cp->ctx_arr[blk].ctx + align_off +
1599               (off * BNX2X_CONTEXT_MEM_SIZE);
1600         if (init)
1601                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1602
1603         ctx_addr->lo = ctx_map & 0xffffffff;
1604         ctx_addr->hi = (u64) ctx_map >> 32;
1605         return ctx;
1606 }
1607
1608 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1609                                 u32 num)
1610 {
1611         struct cnic_local *cp = dev->cnic_priv;
1612         struct iscsi_kwqe_conn_offload1 *req1 =
1613                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1614         struct iscsi_kwqe_conn_offload2 *req2 =
1615                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1616         struct iscsi_kwqe_conn_offload3 *req3;
1617         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1618         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1619         u32 cid = ctx->cid;
1620         u32 hw_cid = BNX2X_HW_CID(cp, cid);
1621         struct iscsi_context *ictx;
1622         struct regpair context_addr;
1623         int i, j, n = 2, n_max;
1624         u8 port = CNIC_PORT(cp);
1625
1626         ctx->ctx_flags = 0;
1627         if (!req2->num_additional_wqes)
1628                 return -EINVAL;
1629
1630         n_max = req2->num_additional_wqes + 2;
1631
1632         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1633         if (ictx == NULL)
1634                 return -ENOMEM;
1635
1636         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1637
1638         ictx->xstorm_ag_context.hq_prod = 1;
1639
1640         ictx->xstorm_st_context.iscsi.first_burst_length =
1641                 ISCSI_DEF_FIRST_BURST_LEN;
1642         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1643                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1644         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1645                 req1->sq_page_table_addr_lo;
1646         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1647                 req1->sq_page_table_addr_hi;
1648         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1649         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1650         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1651                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1652         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1653                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1654         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1655                 iscsi->hq_info.pgtbl[0];
1656         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1657                 iscsi->hq_info.pgtbl[1];
1658         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1659                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1660         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1661                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1662         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1663                 iscsi->r2tq_info.pgtbl[0];
1664         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1665                 iscsi->r2tq_info.pgtbl[1];
1666         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1667                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1668         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1669                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1670         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1671                 BNX2X_ISCSI_PBL_NOT_CACHED;
1672         ictx->xstorm_st_context.iscsi.flags.flags |=
1673                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1674         ictx->xstorm_st_context.iscsi.flags.flags |=
1675                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1676         ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1677                 ETH_P_8021Q;
1678         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
1679                 cp->port_mode == CHIP_2_PORT_MODE) {
1680
1681                 port = 0;
1682         }
1683         ictx->xstorm_st_context.common.flags =
1684                 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1685         ictx->xstorm_st_context.common.flags =
1686                 port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1687
1688         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1689         /* TSTORM requires the base address of RQ DB & not PTE */
1690         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1691                 req2->rq_page_table_addr_lo & PAGE_MASK;
1692         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1693                 req2->rq_page_table_addr_hi;
1694         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1695         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1696         ictx->tstorm_st_context.tcp.flags2 |=
1697                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1698         ictx->tstorm_st_context.tcp.ooo_support_mode =
1699                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1700
1701         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1702
1703         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1704                 req2->rq_page_table_addr_lo;
1705         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1706                 req2->rq_page_table_addr_hi;
1707         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1708         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1709         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1710                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1711         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1712                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1713         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1714                 iscsi->r2tq_info.pgtbl[0];
1715         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1716                 iscsi->r2tq_info.pgtbl[1];
1717         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1718                 req1->cq_page_table_addr_lo;
1719         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1720                 req1->cq_page_table_addr_hi;
1721         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1722         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1723         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1724         ictx->ustorm_st_context.task_pbe_cache_index =
1725                 BNX2X_ISCSI_PBL_NOT_CACHED;
1726         ictx->ustorm_st_context.task_pdu_cache_index =
1727                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1728
1729         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1730                 if (j == 3) {
1731                         if (n >= n_max)
1732                                 break;
1733                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1734                         j = 0;
1735                 }
1736                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1737                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1738                         req3->qp_first_pte[j].hi;
1739                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1740                         req3->qp_first_pte[j].lo;
1741         }
1742
1743         ictx->ustorm_st_context.task_pbl_base.lo =
1744                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1745         ictx->ustorm_st_context.task_pbl_base.hi =
1746                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1747         ictx->ustorm_st_context.tce_phy_addr.lo =
1748                 iscsi->task_array_info.pgtbl[0];
1749         ictx->ustorm_st_context.tce_phy_addr.hi =
1750                 iscsi->task_array_info.pgtbl[1];
1751         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1752         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1753         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1754         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1755                 ISCSI_DEF_MAX_BURST_LEN;
1756         ictx->ustorm_st_context.negotiated_rx |=
1757                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1758                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1759
1760         ictx->cstorm_st_context.hq_pbl_base.lo =
1761                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1762         ictx->cstorm_st_context.hq_pbl_base.hi =
1763                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1764         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1765         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1766         ictx->cstorm_st_context.task_pbl_base.lo =
1767                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1768         ictx->cstorm_st_context.task_pbl_base.hi =
1769                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1770         /* CSTORM and USTORM initialization is different, CSTORM requires
1771          * CQ DB base & not PTE addr */
1772         ictx->cstorm_st_context.cq_db_base.lo =
1773                 req1->cq_page_table_addr_lo & PAGE_MASK;
1774         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1775         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1776         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1777         for (i = 0; i < cp->num_cqs; i++) {
1778                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1779                         ISCSI_INITIAL_SN;
1780                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1781                         ISCSI_INITIAL_SN;
1782         }
1783
1784         ictx->xstorm_ag_context.cdu_reserved =
1785                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1786                                        ISCSI_CONNECTION_TYPE);
1787         ictx->ustorm_ag_context.cdu_usage =
1788                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1789                                        ISCSI_CONNECTION_TYPE);
1790         return 0;
1791
1792 }
1793
1794 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1795                                    u32 num, int *work)
1796 {
1797         struct iscsi_kwqe_conn_offload1 *req1;
1798         struct iscsi_kwqe_conn_offload2 *req2;
1799         struct cnic_local *cp = dev->cnic_priv;
1800         struct cnic_context *ctx;
1801         struct iscsi_kcqe kcqe;
1802         struct kcqe *cqes[1];
1803         u32 l5_cid;
1804         int ret = 0;
1805
1806         if (num < 2) {
1807                 *work = num;
1808                 return -EINVAL;
1809         }
1810
1811         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1812         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1813         if ((num - 2) < req2->num_additional_wqes) {
1814                 *work = num;
1815                 return -EINVAL;
1816         }
1817         *work = 2 + req2->num_additional_wqes;
1818
1819         l5_cid = req1->iscsi_conn_id;
1820         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1821                 return -EINVAL;
1822
1823         memset(&kcqe, 0, sizeof(kcqe));
1824         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1825         kcqe.iscsi_conn_id = l5_cid;
1826         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1827
1828         ctx = &cp->ctx_tbl[l5_cid];
1829         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1830                 kcqe.completion_status =
1831                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1832                 goto done;
1833         }
1834
1835         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1836                 atomic_dec(&cp->iscsi_conn);
1837                 goto done;
1838         }
1839         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1840         if (ret) {
1841                 atomic_dec(&cp->iscsi_conn);
1842                 ret = 0;
1843                 goto done;
1844         }
1845         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1846         if (ret < 0) {
1847                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1848                 atomic_dec(&cp->iscsi_conn);
1849                 goto done;
1850         }
1851
1852         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1853         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1854
1855 done:
1856         cqes[0] = (struct kcqe *) &kcqe;
1857         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1858         return 0;
1859 }
1860
1861
1862 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1863 {
1864         struct cnic_local *cp = dev->cnic_priv;
1865         struct iscsi_kwqe_conn_update *req =
1866                 (struct iscsi_kwqe_conn_update *) kwqe;
1867         void *data;
1868         union l5cm_specific_data l5_data;
1869         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1870         int ret;
1871
1872         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1873                 return -EINVAL;
1874
1875         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1876         if (!data)
1877                 return -ENOMEM;
1878
1879         memcpy(data, kwqe, sizeof(struct kwqe));
1880
1881         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1882                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1883         return ret;
1884 }
1885
1886 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1887 {
1888         struct cnic_local *cp = dev->cnic_priv;
1889         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1890         union l5cm_specific_data l5_data;
1891         int ret;
1892         u32 hw_cid;
1893
1894         init_waitqueue_head(&ctx->waitq);
1895         ctx->wait_cond = 0;
1896         memset(&l5_data, 0, sizeof(l5_data));
1897         hw_cid = BNX2X_HW_CID(cp, ctx->cid);
1898
1899         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1900                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1901
1902         if (ret == 0) {
1903                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1904                 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1905                         return -EBUSY;
1906         }
1907
1908         return 0;
1909 }
1910
1911 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1912 {
1913         struct cnic_local *cp = dev->cnic_priv;
1914         struct iscsi_kwqe_conn_destroy *req =
1915                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1916         u32 l5_cid = req->reserved0;
1917         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1918         int ret = 0;
1919         struct iscsi_kcqe kcqe;
1920         struct kcqe *cqes[1];
1921
1922         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1923                 goto skip_cfc_delete;
1924
1925         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
1926                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
1927
1928                 if (delta > (2 * HZ))
1929                         delta = 0;
1930
1931                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
1932                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
1933                 goto destroy_reply;
1934         }
1935
1936         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
1937
1938 skip_cfc_delete:
1939         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1940
1941         if (!ret) {
1942                 atomic_dec(&cp->iscsi_conn);
1943                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1944         }
1945
1946 destroy_reply:
1947         memset(&kcqe, 0, sizeof(kcqe));
1948         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1949         kcqe.iscsi_conn_id = l5_cid;
1950         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1951         kcqe.iscsi_conn_context_id = req->context_id;
1952
1953         cqes[0] = (struct kcqe *) &kcqe;
1954         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1955
1956         return 0;
1957 }
1958
1959 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1960                                       struct l4_kwq_connect_req1 *kwqe1,
1961                                       struct l4_kwq_connect_req3 *kwqe3,
1962                                       struct l5cm_active_conn_buffer *conn_buf)
1963 {
1964         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1965         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1966                 &conn_buf->xstorm_conn_buffer;
1967         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1968                 &conn_buf->tstorm_conn_buffer;
1969         struct regpair context_addr;
1970         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1971         struct in6_addr src_ip, dst_ip;
1972         int i;
1973         u32 *addrp;
1974
1975         addrp = (u32 *) &conn_addr->local_ip_addr;
1976         for (i = 0; i < 4; i++, addrp++)
1977                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1978
1979         addrp = (u32 *) &conn_addr->remote_ip_addr;
1980         for (i = 0; i < 4; i++, addrp++)
1981                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1982
1983         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1984
1985         xstorm_buf->context_addr.hi = context_addr.hi;
1986         xstorm_buf->context_addr.lo = context_addr.lo;
1987         xstorm_buf->mss = 0xffff;
1988         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1989         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1990                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1991         xstorm_buf->pseudo_header_checksum =
1992                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1993
1994         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1995                 tstorm_buf->params |=
1996                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1997         if (kwqe3->ka_timeout) {
1998                 tstorm_buf->ka_enable = 1;
1999                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
2000                 tstorm_buf->ka_interval = kwqe3->ka_interval;
2001                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
2002         }
2003         tstorm_buf->max_rt_time = 0xffffffff;
2004 }
2005
2006 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2007 {
2008         struct cnic_local *cp = dev->cnic_priv;
2009         u32 pfid = cp->pfid;
2010         u8 *mac = dev->mac_addr;
2011
2012         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2013                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2014         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2015                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2016         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2017                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2018         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2019                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2020         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2021                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2022         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2023                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2024
2025         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2026                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2027         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2028                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2029                  mac[4]);
2030         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2031                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2032         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2033                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2034                  mac[2]);
2035         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2036                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2037         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2038                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2039                  mac[0]);
2040 }
2041
2042 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
2043 {
2044         struct cnic_local *cp = dev->cnic_priv;
2045         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
2046         u16 tstorm_flags = 0;
2047
2048         if (tcp_ts) {
2049                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
2050                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
2051         }
2052
2053         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2054                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
2055
2056         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
2057                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
2058 }
2059
2060 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2061                               u32 num, int *work)
2062 {
2063         struct cnic_local *cp = dev->cnic_priv;
2064         struct l4_kwq_connect_req1 *kwqe1 =
2065                 (struct l4_kwq_connect_req1 *) wqes[0];
2066         struct l4_kwq_connect_req3 *kwqe3;
2067         struct l5cm_active_conn_buffer *conn_buf;
2068         struct l5cm_conn_addr_params *conn_addr;
2069         union l5cm_specific_data l5_data;
2070         u32 l5_cid = kwqe1->pg_cid;
2071         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2072         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2073         int ret;
2074
2075         if (num < 2) {
2076                 *work = num;
2077                 return -EINVAL;
2078         }
2079
2080         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2081                 *work = 3;
2082         else
2083                 *work = 2;
2084
2085         if (num < *work) {
2086                 *work = num;
2087                 return -EINVAL;
2088         }
2089
2090         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2091                 netdev_err(dev->netdev, "conn_buf size too big\n");
2092                 return -ENOMEM;
2093         }
2094         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2095         if (!conn_buf)
2096                 return -ENOMEM;
2097
2098         memset(conn_buf, 0, sizeof(*conn_buf));
2099
2100         conn_addr = &conn_buf->conn_addr_buf;
2101         conn_addr->remote_addr_0 = csk->ha[0];
2102         conn_addr->remote_addr_1 = csk->ha[1];
2103         conn_addr->remote_addr_2 = csk->ha[2];
2104         conn_addr->remote_addr_3 = csk->ha[3];
2105         conn_addr->remote_addr_4 = csk->ha[4];
2106         conn_addr->remote_addr_5 = csk->ha[5];
2107
2108         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2109                 struct l4_kwq_connect_req2 *kwqe2 =
2110                         (struct l4_kwq_connect_req2 *) wqes[1];
2111
2112                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2113                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2114                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2115
2116                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2117                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2118                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2119                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2120         }
2121         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2122
2123         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2124         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2125         conn_addr->local_tcp_port = kwqe1->src_port;
2126         conn_addr->remote_tcp_port = kwqe1->dst_port;
2127
2128         conn_addr->pmtu = kwqe3->pmtu;
2129         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2130
2131         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2132                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2133
2134         cnic_bnx2x_set_tcp_timestamp(dev,
2135                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
2136
2137         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2138                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2139         if (!ret)
2140                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2141
2142         return ret;
2143 }
2144
2145 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2146 {
2147         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2148         union l5cm_specific_data l5_data;
2149         int ret;
2150
2151         memset(&l5_data, 0, sizeof(l5_data));
2152         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2153                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2154         return ret;
2155 }
2156
2157 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2158 {
2159         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2160         union l5cm_specific_data l5_data;
2161         int ret;
2162
2163         memset(&l5_data, 0, sizeof(l5_data));
2164         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2165                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2166         return ret;
2167 }
2168 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2169 {
2170         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2171         struct l4_kcq kcqe;
2172         struct kcqe *cqes[1];
2173
2174         memset(&kcqe, 0, sizeof(kcqe));
2175         kcqe.pg_host_opaque = req->host_opaque;
2176         kcqe.pg_cid = req->host_opaque;
2177         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2178         cqes[0] = (struct kcqe *) &kcqe;
2179         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2180         return 0;
2181 }
2182
2183 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2184 {
2185         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2186         struct l4_kcq kcqe;
2187         struct kcqe *cqes[1];
2188
2189         memset(&kcqe, 0, sizeof(kcqe));
2190         kcqe.pg_host_opaque = req->pg_host_opaque;
2191         kcqe.pg_cid = req->pg_cid;
2192         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2193         cqes[0] = (struct kcqe *) &kcqe;
2194         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2195         return 0;
2196 }
2197
2198 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2199 {
2200         struct fcoe_kwqe_stat *req;
2201         struct fcoe_stat_ramrod_params *fcoe_stat;
2202         union l5cm_specific_data l5_data;
2203         struct cnic_local *cp = dev->cnic_priv;
2204         int ret;
2205         u32 cid;
2206
2207         req = (struct fcoe_kwqe_stat *) kwqe;
2208         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2209
2210         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2211         if (!fcoe_stat)
2212                 return -ENOMEM;
2213
2214         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2215         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2216
2217         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2218                                   FCOE_CONNECTION_TYPE, &l5_data);
2219         return ret;
2220 }
2221
2222 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2223                                  u32 num, int *work)
2224 {
2225         int ret;
2226         struct cnic_local *cp = dev->cnic_priv;
2227         u32 cid;
2228         struct fcoe_init_ramrod_params *fcoe_init;
2229         struct fcoe_kwqe_init1 *req1;
2230         struct fcoe_kwqe_init2 *req2;
2231         struct fcoe_kwqe_init3 *req3;
2232         union l5cm_specific_data l5_data;
2233
2234         if (num < 3) {
2235                 *work = num;
2236                 return -EINVAL;
2237         }
2238         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2239         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2240         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2241         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2242                 *work = 1;
2243                 return -EINVAL;
2244         }
2245         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2246                 *work = 2;
2247                 return -EINVAL;
2248         }
2249
2250         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2251                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2252                 return -ENOMEM;
2253         }
2254         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2255         if (!fcoe_init)
2256                 return -ENOMEM;
2257
2258         memset(fcoe_init, 0, sizeof(*fcoe_init));
2259         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2260         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2261         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2262         fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2263         fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2264         fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2265
2266         fcoe_init->sb_num = cp->status_blk_num;
2267         fcoe_init->eq_prod = MAX_KCQ_IDX;
2268         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2269         cp->kcq2.sw_prod_idx = 0;
2270
2271         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2272         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2273                                   FCOE_CONNECTION_TYPE, &l5_data);
2274         *work = 3;
2275         return ret;
2276 }
2277
2278 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2279                                  u32 num, int *work)
2280 {
2281         int ret = 0;
2282         u32 cid = -1, l5_cid;
2283         struct cnic_local *cp = dev->cnic_priv;
2284         struct fcoe_kwqe_conn_offload1 *req1;
2285         struct fcoe_kwqe_conn_offload2 *req2;
2286         struct fcoe_kwqe_conn_offload3 *req3;
2287         struct fcoe_kwqe_conn_offload4 *req4;
2288         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2289         struct cnic_context *ctx;
2290         struct fcoe_context *fctx;
2291         struct regpair ctx_addr;
2292         union l5cm_specific_data l5_data;
2293         struct fcoe_kcqe kcqe;
2294         struct kcqe *cqes[1];
2295
2296         if (num < 4) {
2297                 *work = num;
2298                 return -EINVAL;
2299         }
2300         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2301         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2302         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2303         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2304
2305         *work = 4;
2306
2307         l5_cid = req1->fcoe_conn_id;
2308         if (l5_cid >= dev->max_fcoe_conn)
2309                 goto err_reply;
2310
2311         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2312
2313         ctx = &cp->ctx_tbl[l5_cid];
2314         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2315                 goto err_reply;
2316
2317         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2318         if (ret) {
2319                 ret = 0;
2320                 goto err_reply;
2321         }
2322         cid = ctx->cid;
2323
2324         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2325         if (fctx) {
2326                 u32 hw_cid = BNX2X_HW_CID(cp, cid);
2327                 u32 val;
2328
2329                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2330                                              FCOE_CONNECTION_TYPE);
2331                 fctx->xstorm_ag_context.cdu_reserved = val;
2332                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2333                                              FCOE_CONNECTION_TYPE);
2334                 fctx->ustorm_ag_context.cdu_usage = val;
2335         }
2336         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2337                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2338                 goto err_reply;
2339         }
2340         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2341         if (!fcoe_offload)
2342                 goto err_reply;
2343
2344         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2345         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2346         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2347         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2348         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2349
2350         cid = BNX2X_HW_CID(cp, cid);
2351         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2352                                   FCOE_CONNECTION_TYPE, &l5_data);
2353         if (!ret)
2354                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2355
2356         return ret;
2357
2358 err_reply:
2359         if (cid != -1)
2360                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2361
2362         memset(&kcqe, 0, sizeof(kcqe));
2363         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2364         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2365         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2366
2367         cqes[0] = (struct kcqe *) &kcqe;
2368         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2369         return ret;
2370 }
2371
2372 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2373 {
2374         struct fcoe_kwqe_conn_enable_disable *req;
2375         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2376         union l5cm_specific_data l5_data;
2377         int ret;
2378         u32 cid, l5_cid;
2379         struct cnic_local *cp = dev->cnic_priv;
2380
2381         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2382         cid = req->context_id;
2383         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2384
2385         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2386                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2387                 return -ENOMEM;
2388         }
2389         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2390         if (!fcoe_enable)
2391                 return -ENOMEM;
2392
2393         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2394         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2395         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2396                                   FCOE_CONNECTION_TYPE, &l5_data);
2397         return ret;
2398 }
2399
2400 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2401 {
2402         struct fcoe_kwqe_conn_enable_disable *req;
2403         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2404         union l5cm_specific_data l5_data;
2405         int ret;
2406         u32 cid, l5_cid;
2407         struct cnic_local *cp = dev->cnic_priv;
2408
2409         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2410         cid = req->context_id;
2411         l5_cid = req->conn_id;
2412         if (l5_cid >= dev->max_fcoe_conn)
2413                 return -EINVAL;
2414
2415         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2416
2417         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2418                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2419                 return -ENOMEM;
2420         }
2421         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2422         if (!fcoe_disable)
2423                 return -ENOMEM;
2424
2425         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2426         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2427         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2428                                   FCOE_CONNECTION_TYPE, &l5_data);
2429         return ret;
2430 }
2431
2432 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2433 {
2434         struct fcoe_kwqe_conn_destroy *req;
2435         union l5cm_specific_data l5_data;
2436         int ret;
2437         u32 cid, l5_cid;
2438         struct cnic_local *cp = dev->cnic_priv;
2439         struct cnic_context *ctx;
2440         struct fcoe_kcqe kcqe;
2441         struct kcqe *cqes[1];
2442
2443         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2444         cid = req->context_id;
2445         l5_cid = req->conn_id;
2446         if (l5_cid >= dev->max_fcoe_conn)
2447                 return -EINVAL;
2448
2449         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2450
2451         ctx = &cp->ctx_tbl[l5_cid];
2452
2453         init_waitqueue_head(&ctx->waitq);
2454         ctx->wait_cond = 0;
2455
2456         memset(&kcqe, 0, sizeof(kcqe));
2457         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2458         memset(&l5_data, 0, sizeof(l5_data));
2459         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2460                                   FCOE_CONNECTION_TYPE, &l5_data);
2461         if (ret == 0) {
2462                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2463                 if (ctx->wait_cond)
2464                         kcqe.completion_status = 0;
2465         }
2466
2467         set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2468         queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2469
2470         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2471         kcqe.fcoe_conn_id = req->conn_id;
2472         kcqe.fcoe_conn_context_id = cid;
2473
2474         cqes[0] = (struct kcqe *) &kcqe;
2475         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2476         return ret;
2477 }
2478
2479 static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2480 {
2481         struct cnic_local *cp = dev->cnic_priv;
2482         u32 i;
2483
2484         for (i = start_cid; i < cp->max_cid_space; i++) {
2485                 struct cnic_context *ctx = &cp->ctx_tbl[i];
2486                 int j;
2487
2488                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2489                         msleep(10);
2490
2491                 for (j = 0; j < 5; j++) {
2492                         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2493                                 break;
2494                         msleep(20);
2495                 }
2496
2497                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2498                         netdev_warn(dev->netdev, "CID %x not deleted\n",
2499                                    ctx->cid);
2500         }
2501 }
2502
2503 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2504 {
2505         struct fcoe_kwqe_destroy *req;
2506         union l5cm_specific_data l5_data;
2507         struct cnic_local *cp = dev->cnic_priv;
2508         int ret;
2509         u32 cid;
2510
2511         cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2512
2513         req = (struct fcoe_kwqe_destroy *) kwqe;
2514         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2515
2516         memset(&l5_data, 0, sizeof(l5_data));
2517         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2518                                   FCOE_CONNECTION_TYPE, &l5_data);
2519         return ret;
2520 }
2521
2522 static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2523 {
2524         struct cnic_local *cp = dev->cnic_priv;
2525         struct kcqe kcqe;
2526         struct kcqe *cqes[1];
2527         u32 cid;
2528         u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2529         u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2530         u32 kcqe_op;
2531         int ulp_type;
2532
2533         cid = kwqe->kwqe_info0;
2534         memset(&kcqe, 0, sizeof(kcqe));
2535
2536         if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2537                 u32 l5_cid = 0;
2538
2539                 ulp_type = CNIC_ULP_FCOE;
2540                 if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2541                         struct fcoe_kwqe_conn_enable_disable *req;
2542
2543                         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2544                         kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2545                         cid = req->context_id;
2546                         l5_cid = req->conn_id;
2547                 } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2548                         kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2549                 } else {
2550                         return;
2551                 }
2552                 kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2553                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2554                 kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2555                 kcqe.kcqe_info2 = cid;
2556                 kcqe.kcqe_info0 = l5_cid;
2557
2558         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2559                 ulp_type = CNIC_ULP_ISCSI;
2560                 if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2561                         cid = kwqe->kwqe_info1;
2562
2563                 kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2564                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2565                 kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2566                 kcqe.kcqe_info2 = cid;
2567                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2568
2569         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2570                 struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2571
2572                 ulp_type = CNIC_ULP_L4;
2573                 if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2574                         kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2575                 else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2576                         kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2577                 else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2578                         kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2579                 else
2580                         return;
2581
2582                 kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2583                                     KCQE_FLAGS_LAYER_MASK_L4;
2584                 l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2585                 l4kcqe->cid = cid;
2586                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2587         } else {
2588                 return;
2589         }
2590
2591         cqes[0] = (struct kcqe *) &kcqe;
2592         cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2593 }
2594
2595 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2596                                          struct kwqe *wqes[], u32 num_wqes)
2597 {
2598         int i, work, ret;
2599         u32 opcode;
2600         struct kwqe *kwqe;
2601
2602         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2603                 return -EAGAIN;         /* bnx2 is down */
2604
2605         for (i = 0; i < num_wqes; ) {
2606                 kwqe = wqes[i];
2607                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2608                 work = 1;
2609
2610                 switch (opcode) {
2611                 case ISCSI_KWQE_OPCODE_INIT1:
2612                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2613                         break;
2614                 case ISCSI_KWQE_OPCODE_INIT2:
2615                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2616                         break;
2617                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2618                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2619                                                      num_wqes - i, &work);
2620                         break;
2621                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2622                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2623                         break;
2624                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2625                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2626                         break;
2627                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2628                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2629                                                  &work);
2630                         break;
2631                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2632                         ret = cnic_bnx2x_close(dev, kwqe);
2633                         break;
2634                 case L4_KWQE_OPCODE_VALUE_RESET:
2635                         ret = cnic_bnx2x_reset(dev, kwqe);
2636                         break;
2637                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2638                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2639                         break;
2640                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2641                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2642                         break;
2643                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2644                         ret = 0;
2645                         break;
2646                 default:
2647                         ret = 0;
2648                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2649                                    opcode);
2650                         break;
2651                 }
2652                 if (ret < 0) {
2653                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2654                                    opcode);
2655
2656                         /* Possibly bnx2x parity error, send completion
2657                          * to ulp drivers with error code to speed up
2658                          * cleanup and reset recovery.
2659                          */
2660                         if (ret == -EIO || ret == -EAGAIN)
2661                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2662                 }
2663                 i += work;
2664         }
2665         return 0;
2666 }
2667
2668 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2669                                         struct kwqe *wqes[], u32 num_wqes)
2670 {
2671         struct cnic_local *cp = dev->cnic_priv;
2672         int i, work, ret;
2673         u32 opcode;
2674         struct kwqe *kwqe;
2675
2676         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2677                 return -EAGAIN;         /* bnx2 is down */
2678
2679         if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
2680                 return -EINVAL;
2681
2682         for (i = 0; i < num_wqes; ) {
2683                 kwqe = wqes[i];
2684                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2685                 work = 1;
2686
2687                 switch (opcode) {
2688                 case FCOE_KWQE_OPCODE_INIT1:
2689                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2690                                                     num_wqes - i, &work);
2691                         break;
2692                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2693                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2694                                                     num_wqes - i, &work);
2695                         break;
2696                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2697                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2698                         break;
2699                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2700                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2701                         break;
2702                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2703                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2704                         break;
2705                 case FCOE_KWQE_OPCODE_DESTROY:
2706                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2707                         break;
2708                 case FCOE_KWQE_OPCODE_STAT:
2709                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2710                         break;
2711                 default:
2712                         ret = 0;
2713                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2714                                    opcode);
2715                         break;
2716                 }
2717                 if (ret < 0) {
2718                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2719                                    opcode);
2720
2721                         /* Possibly bnx2x parity error, send completion
2722                          * to ulp drivers with error code to speed up
2723                          * cleanup and reset recovery.
2724                          */
2725                         if (ret == -EIO || ret == -EAGAIN)
2726                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2727                 }
2728                 i += work;
2729         }
2730         return 0;
2731 }
2732
2733 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2734                                    u32 num_wqes)
2735 {
2736         int ret = -EINVAL;
2737         u32 layer_code;
2738
2739         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2740                 return -EAGAIN;         /* bnx2x is down */
2741
2742         if (!num_wqes)
2743                 return 0;
2744
2745         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2746         switch (layer_code) {
2747         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2748         case KWQE_FLAGS_LAYER_MASK_L4:
2749         case KWQE_FLAGS_LAYER_MASK_L2:
2750                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2751                 break;
2752
2753         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2754                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2755                 break;
2756         }
2757         return ret;
2758 }
2759
2760 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2761 {
2762         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2763                 return KCQE_FLAGS_LAYER_MASK_L4;
2764
2765         return opflag & KCQE_FLAGS_LAYER_MASK;
2766 }
2767
2768 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2769 {
2770         struct cnic_local *cp = dev->cnic_priv;
2771         int i, j, comp = 0;
2772
2773         i = 0;
2774         j = 1;
2775         while (num_cqes) {
2776                 struct cnic_ulp_ops *ulp_ops;
2777                 int ulp_type;
2778                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2779                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2780
2781                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2782                         comp++;
2783
2784                 while (j < num_cqes) {
2785                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2786
2787                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2788                                 break;
2789
2790                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2791                                 comp++;
2792                         j++;
2793                 }
2794
2795                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2796                         ulp_type = CNIC_ULP_RDMA;
2797                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2798                         ulp_type = CNIC_ULP_ISCSI;
2799                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2800                         ulp_type = CNIC_ULP_FCOE;
2801                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2802                         ulp_type = CNIC_ULP_L4;
2803                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2804                         goto end;
2805                 else {
2806                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2807                                    kcqe_op_flag);
2808                         goto end;
2809                 }
2810
2811                 rcu_read_lock();
2812                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2813                 if (likely(ulp_ops)) {
2814                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2815                                                   cp->completed_kcq + i, j);
2816                 }
2817                 rcu_read_unlock();
2818 end:
2819                 num_cqes -= j;
2820                 i += j;
2821                 j = 1;
2822         }
2823         if (unlikely(comp))
2824                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2825 }
2826
2827 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2828 {
2829         struct cnic_local *cp = dev->cnic_priv;
2830         u16 i, ri, hw_prod, last;
2831         struct kcqe *kcqe;
2832         int kcqe_cnt = 0, last_cnt = 0;
2833
2834         i = ri = last = info->sw_prod_idx;
2835         ri &= MAX_KCQ_IDX;
2836         hw_prod = *info->hw_prod_idx_ptr;
2837         hw_prod = info->hw_idx(hw_prod);
2838
2839         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2840                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2841                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2842                 i = info->next_idx(i);
2843                 ri = i & MAX_KCQ_IDX;
2844                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2845                         last_cnt = kcqe_cnt;
2846                         last = i;
2847                 }
2848         }
2849
2850         info->sw_prod_idx = last;
2851         return last_cnt;
2852 }
2853
2854 static int cnic_l2_completion(struct cnic_local *cp)
2855 {
2856         u16 hw_cons, sw_cons;
2857         struct cnic_uio_dev *udev = cp->udev;
2858         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2859                                         (udev->l2_ring + (2 * BCM_PAGE_SIZE));
2860         u32 cmd;
2861         int comp = 0;
2862
2863         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2864                 return 0;
2865
2866         hw_cons = *cp->rx_cons_ptr;
2867         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2868                 hw_cons++;
2869
2870         sw_cons = cp->rx_cons;
2871         while (sw_cons != hw_cons) {
2872                 u8 cqe_fp_flags;
2873
2874                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2875                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2876                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2877                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2878                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2879                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2880                             cmd == RAMROD_CMD_ID_ETH_HALT)
2881                                 comp++;
2882                 }
2883                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2884         }
2885         return comp;
2886 }
2887
2888 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2889 {
2890         u16 rx_cons, tx_cons;
2891         int comp = 0;
2892
2893         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2894                 return;
2895
2896         rx_cons = *cp->rx_cons_ptr;
2897         tx_cons = *cp->tx_cons_ptr;
2898         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2899                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2900                         comp = cnic_l2_completion(cp);
2901
2902                 cp->tx_cons = tx_cons;
2903                 cp->rx_cons = rx_cons;
2904
2905                 if (cp->udev)
2906                         uio_event_notify(&cp->udev->cnic_uinfo);
2907         }
2908         if (comp)
2909                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2910 }
2911
2912 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2913 {
2914         struct cnic_local *cp = dev->cnic_priv;
2915         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2916         int kcqe_cnt;
2917
2918         /* status block index must be read before reading other fields */
2919         rmb();
2920         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2921
2922         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2923
2924                 service_kcqes(dev, kcqe_cnt);
2925
2926                 /* Tell compiler that status_blk fields can change. */
2927                 barrier();
2928                 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2929                 /* status block index must be read first */
2930                 rmb();
2931                 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2932         }
2933
2934         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2935
2936         cnic_chk_pkt_rings(cp);
2937
2938         return status_idx;
2939 }
2940
2941 static int cnic_service_bnx2(void *data, void *status_blk)
2942 {
2943         struct cnic_dev *dev = data;
2944
2945         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2946                 struct status_block *sblk = status_blk;
2947
2948                 return sblk->status_idx;
2949         }
2950
2951         return cnic_service_bnx2_queues(dev);
2952 }
2953
2954 static void cnic_service_bnx2_msix(unsigned long data)
2955 {
2956         struct cnic_dev *dev = (struct cnic_dev *) data;
2957         struct cnic_local *cp = dev->cnic_priv;
2958
2959         cp->last_status_idx = cnic_service_bnx2_queues(dev);
2960
2961         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2962                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2963 }
2964
2965 static void cnic_doirq(struct cnic_dev *dev)
2966 {
2967         struct cnic_local *cp = dev->cnic_priv;
2968
2969         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2970                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
2971
2972                 prefetch(cp->status_blk.gen);
2973                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2974
2975                 tasklet_schedule(&cp->cnic_irq_task);
2976         }
2977 }
2978
2979 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2980 {
2981         struct cnic_dev *dev = dev_instance;
2982         struct cnic_local *cp = dev->cnic_priv;
2983
2984         if (cp->ack_int)
2985                 cp->ack_int(dev);
2986
2987         cnic_doirq(dev);
2988
2989         return IRQ_HANDLED;
2990 }
2991
2992 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2993                                       u16 index, u8 op, u8 update)
2994 {
2995         struct cnic_local *cp = dev->cnic_priv;
2996         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2997                        COMMAND_REG_INT_ACK);
2998         struct igu_ack_register igu_ack;
2999
3000         igu_ack.status_block_index = index;
3001         igu_ack.sb_id_and_flags =
3002                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
3003                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3004                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3005                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3006
3007         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3008 }
3009
3010 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3011                             u16 index, u8 op, u8 update)
3012 {
3013         struct igu_regular cmd_data;
3014         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3015
3016         cmd_data.sb_id_and_flags =
3017                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3018                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3019                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
3020                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3021
3022
3023         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3024 }
3025
3026 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3027 {
3028         struct cnic_local *cp = dev->cnic_priv;
3029
3030         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3031                            IGU_INT_DISABLE, 0);
3032 }
3033
3034 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3035 {
3036         struct cnic_local *cp = dev->cnic_priv;
3037
3038         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3039                         IGU_INT_DISABLE, 0);
3040 }
3041
3042 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3043 {
3044         u32 last_status = *info->status_idx_ptr;
3045         int kcqe_cnt;
3046
3047         /* status block index must be read before reading the KCQ */
3048         rmb();
3049         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3050
3051                 service_kcqes(dev, kcqe_cnt);
3052
3053                 /* Tell compiler that sblk fields can change. */
3054                 barrier();
3055
3056                 last_status = *info->status_idx_ptr;
3057                 /* status block index must be read before reading the KCQ */
3058                 rmb();
3059         }
3060         return last_status;
3061 }
3062
3063 static void cnic_service_bnx2x_bh(unsigned long data)
3064 {
3065         struct cnic_dev *dev = (struct cnic_dev *) data;
3066         struct cnic_local *cp = dev->cnic_priv;
3067         u32 status_idx, new_status_idx;
3068
3069         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3070                 return;
3071
3072         while (1) {
3073                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3074
3075                 CNIC_WR16(dev, cp->kcq1.io_addr,
3076                           cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3077
3078                 if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
3079                         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
3080                                            status_idx, IGU_INT_ENABLE, 1);
3081                         break;
3082                 }
3083
3084                 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3085
3086                 if (new_status_idx != status_idx)
3087                         continue;
3088
3089                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3090                           MAX_KCQ_IDX);
3091
3092                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3093                                 status_idx, IGU_INT_ENABLE, 1);
3094
3095                 break;
3096         }
3097 }
3098
3099 static int cnic_service_bnx2x(void *data, void *status_blk)
3100 {
3101         struct cnic_dev *dev = data;
3102         struct cnic_local *cp = dev->cnic_priv;
3103
3104         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3105                 cnic_doirq(dev);
3106
3107         cnic_chk_pkt_rings(cp);
3108
3109         return 0;
3110 }
3111
3112 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3113 {
3114         struct cnic_ulp_ops *ulp_ops;
3115
3116         if (if_type == CNIC_ULP_ISCSI)
3117                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3118
3119         mutex_lock(&cnic_lock);
3120         ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3121                                             lockdep_is_held(&cnic_lock));
3122         if (!ulp_ops) {
3123                 mutex_unlock(&cnic_lock);
3124                 return;
3125         }
3126         set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3127         mutex_unlock(&cnic_lock);
3128
3129         if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3130                 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3131
3132         clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3133 }
3134
3135 static void cnic_ulp_stop(struct cnic_dev *dev)
3136 {
3137         struct cnic_local *cp = dev->cnic_priv;
3138         int if_type;
3139
3140         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3141                 cnic_ulp_stop_one(cp, if_type);
3142 }
3143
3144 static void cnic_ulp_start(struct cnic_dev *dev)
3145 {
3146         struct cnic_local *cp = dev->cnic_priv;
3147         int if_type;
3148
3149         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3150                 struct cnic_ulp_ops *ulp_ops;
3151
3152                 mutex_lock(&cnic_lock);
3153                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3154                                                     lockdep_is_held(&cnic_lock));
3155                 if (!ulp_ops || !ulp_ops->cnic_start) {
3156                         mutex_unlock(&cnic_lock);
3157                         continue;
3158                 }
3159                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3160                 mutex_unlock(&cnic_lock);
3161
3162                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3163                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3164
3165                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3166         }
3167 }
3168
3169 static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3170 {
3171         struct cnic_local *cp = dev->cnic_priv;
3172         struct cnic_ulp_ops *ulp_ops;
3173         int rc;
3174
3175         mutex_lock(&cnic_lock);
3176         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
3177         if (ulp_ops && ulp_ops->cnic_get_stats)
3178                 rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3179         else
3180                 rc = -ENODEV;
3181         mutex_unlock(&cnic_lock);
3182         return rc;
3183 }
3184
3185 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3186 {
3187         struct cnic_dev *dev = data;
3188         int ulp_type = CNIC_ULP_ISCSI;
3189
3190         switch (info->cmd) {
3191         case CNIC_CTL_STOP_CMD:
3192                 cnic_hold(dev);
3193
3194                 cnic_ulp_stop(dev);
3195                 cnic_stop_hw(dev);
3196
3197                 cnic_put(dev);
3198                 break;
3199         case CNIC_CTL_START_CMD:
3200                 cnic_hold(dev);
3201
3202                 if (!cnic_start_hw(dev))
3203                         cnic_ulp_start(dev);
3204
3205                 cnic_put(dev);
3206                 break;
3207         case CNIC_CTL_STOP_ISCSI_CMD: {
3208                 struct cnic_local *cp = dev->cnic_priv;
3209                 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3210                 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3211                 break;
3212         }
3213         case CNIC_CTL_COMPLETION_CMD: {
3214                 struct cnic_ctl_completion *comp = &info->data.comp;
3215                 u32 cid = BNX2X_SW_CID(comp->cid);
3216                 u32 l5_cid;
3217                 struct cnic_local *cp = dev->cnic_priv;
3218
3219                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3220                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3221
3222                         if (unlikely(comp->error)) {
3223                                 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3224                                 netdev_err(dev->netdev,
3225                                            "CID %x CFC delete comp error %x\n",
3226                                            cid, comp->error);
3227                         }
3228
3229                         ctx->wait_cond = 1;
3230                         wake_up(&ctx->waitq);
3231                 }
3232                 break;
3233         }
3234         case CNIC_CTL_FCOE_STATS_GET_CMD:
3235                 ulp_type = CNIC_ULP_FCOE;
3236                 /* fall through */
3237         case CNIC_CTL_ISCSI_STATS_GET_CMD:
3238                 cnic_hold(dev);
3239                 cnic_copy_ulp_stats(dev, ulp_type);
3240                 cnic_put(dev);
3241                 break;
3242
3243         default:
3244                 return -EINVAL;
3245         }
3246         return 0;
3247 }
3248
3249 static void cnic_ulp_init(struct cnic_dev *dev)
3250 {
3251         int i;
3252         struct cnic_local *cp = dev->cnic_priv;
3253
3254         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3255                 struct cnic_ulp_ops *ulp_ops;
3256
3257                 mutex_lock(&cnic_lock);
3258                 ulp_ops = cnic_ulp_tbl_prot(i);
3259                 if (!ulp_ops || !ulp_ops->cnic_init) {
3260                         mutex_unlock(&cnic_lock);
3261                         continue;
3262                 }
3263                 ulp_get(ulp_ops);
3264                 mutex_unlock(&cnic_lock);
3265
3266                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3267                         ulp_ops->cnic_init(dev);
3268
3269                 ulp_put(ulp_ops);
3270         }
3271 }
3272
3273 static void cnic_ulp_exit(struct cnic_dev *dev)
3274 {
3275         int i;
3276         struct cnic_local *cp = dev->cnic_priv;
3277
3278         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3279                 struct cnic_ulp_ops *ulp_ops;
3280
3281                 mutex_lock(&cnic_lock);
3282                 ulp_ops = cnic_ulp_tbl_prot(i);
3283                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3284                         mutex_unlock(&cnic_lock);
3285                         continue;
3286                 }
3287                 ulp_get(ulp_ops);
3288                 mutex_unlock(&cnic_lock);
3289
3290                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3291                         ulp_ops->cnic_exit(dev);
3292
3293                 ulp_put(ulp_ops);
3294         }
3295 }
3296
3297 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3298 {
3299         struct cnic_dev *dev = csk->dev;
3300         struct l4_kwq_offload_pg *l4kwqe;
3301         struct kwqe *wqes[1];
3302
3303         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3304         memset(l4kwqe, 0, sizeof(*l4kwqe));
3305         wqes[0] = (struct kwqe *) l4kwqe;
3306
3307         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3308         l4kwqe->flags =
3309                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3310         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3311
3312         l4kwqe->da0 = csk->ha[0];
3313         l4kwqe->da1 = csk->ha[1];
3314         l4kwqe->da2 = csk->ha[2];
3315         l4kwqe->da3 = csk->ha[3];
3316         l4kwqe->da4 = csk->ha[4];
3317         l4kwqe->da5 = csk->ha[5];
3318
3319         l4kwqe->sa0 = dev->mac_addr[0];
3320         l4kwqe->sa1 = dev->mac_addr[1];
3321         l4kwqe->sa2 = dev->mac_addr[2];
3322         l4kwqe->sa3 = dev->mac_addr[3];
3323         l4kwqe->sa4 = dev->mac_addr[4];
3324         l4kwqe->sa5 = dev->mac_addr[5];
3325
3326         l4kwqe->etype = ETH_P_IP;
3327         l4kwqe->ipid_start = DEF_IPID_START;
3328         l4kwqe->host_opaque = csk->l5_cid;
3329
3330         if (csk->vlan_id) {
3331                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3332                 l4kwqe->vlan_tag = csk->vlan_id;
3333                 l4kwqe->l2hdr_nbytes += 4;
3334         }
3335
3336         return dev->submit_kwqes(dev, wqes, 1);
3337 }
3338
3339 static int cnic_cm_update_pg(struct cnic_sock *csk)
3340 {
3341         struct cnic_dev *dev = csk->dev;
3342         struct l4_kwq_update_pg *l4kwqe;
3343         struct kwqe *wqes[1];
3344
3345         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3346         memset(l4kwqe, 0, sizeof(*l4kwqe));
3347         wqes[0] = (struct kwqe *) l4kwqe;
3348
3349         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3350         l4kwqe->flags =
3351                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3352         l4kwqe->pg_cid = csk->pg_cid;
3353
3354         l4kwqe->da0 = csk->ha[0];
3355         l4kwqe->da1 = csk->ha[1];
3356         l4kwqe->da2 = csk->ha[2];
3357         l4kwqe->da3 = csk->ha[3];
3358         l4kwqe->da4 = csk->ha[4];
3359         l4kwqe->da5 = csk->ha[5];
3360
3361         l4kwqe->pg_host_opaque = csk->l5_cid;
3362         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3363
3364         return dev->submit_kwqes(dev, wqes, 1);
3365 }
3366
3367 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3368 {
3369         struct cnic_dev *dev = csk->dev;
3370         struct l4_kwq_upload *l4kwqe;
3371         struct kwqe *wqes[1];
3372
3373         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3374         memset(l4kwqe, 0, sizeof(*l4kwqe));
3375         wqes[0] = (struct kwqe *) l4kwqe;
3376
3377         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3378         l4kwqe->flags =
3379                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3380         l4kwqe->cid = csk->pg_cid;
3381
3382         return dev->submit_kwqes(dev, wqes, 1);
3383 }
3384
3385 static int cnic_cm_conn_req(struct cnic_sock *csk)
3386 {
3387         struct cnic_dev *dev = csk->dev;
3388         struct l4_kwq_connect_req1 *l4kwqe1;
3389         struct l4_kwq_connect_req2 *l4kwqe2;
3390         struct l4_kwq_connect_req3 *l4kwqe3;
3391         struct kwqe *wqes[3];
3392         u8 tcp_flags = 0;
3393         int num_wqes = 2;
3394
3395         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3396         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3397         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3398         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3399         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3400         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3401
3402         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3403         l4kwqe3->flags =
3404                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3405         l4kwqe3->ka_timeout = csk->ka_timeout;
3406         l4kwqe3->ka_interval = csk->ka_interval;
3407         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3408         l4kwqe3->tos = csk->tos;
3409         l4kwqe3->ttl = csk->ttl;
3410         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3411         l4kwqe3->pmtu = csk->mtu;
3412         l4kwqe3->rcv_buf = csk->rcv_buf;
3413         l4kwqe3->snd_buf = csk->snd_buf;
3414         l4kwqe3->seed = csk->seed;
3415
3416         wqes[0] = (struct kwqe *) l4kwqe1;
3417         if (test_bit(SK_F_IPV6, &csk->flags)) {
3418                 wqes[1] = (struct kwqe *) l4kwqe2;
3419                 wqes[2] = (struct kwqe *) l4kwqe3;
3420                 num_wqes = 3;
3421
3422                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3423                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3424                 l4kwqe2->flags =
3425                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3426                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3427                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3428                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3429                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3430                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3431                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3432                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3433                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3434                                sizeof(struct tcphdr);
3435         } else {
3436                 wqes[1] = (struct kwqe *) l4kwqe3;
3437                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3438                                sizeof(struct tcphdr);
3439         }
3440
3441         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3442         l4kwqe1->flags =
3443                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3444                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3445         l4kwqe1->cid = csk->cid;
3446         l4kwqe1->pg_cid = csk->pg_cid;
3447         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3448         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3449         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3450         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3451         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3452                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3453         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3454                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3455         if (csk->tcp_flags & SK_TCP_NAGLE)
3456                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3457         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3458                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3459         if (csk->tcp_flags & SK_TCP_SACK)
3460                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3461         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3462                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3463
3464         l4kwqe1->tcp_flags = tcp_flags;
3465
3466         return dev->submit_kwqes(dev, wqes, num_wqes);
3467 }
3468
3469 static int cnic_cm_close_req(struct cnic_sock *csk)
3470 {
3471         struct cnic_dev *dev = csk->dev;
3472         struct l4_kwq_close_req *l4kwqe;
3473         struct kwqe *wqes[1];
3474
3475         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3476         memset(l4kwqe, 0, sizeof(*l4kwqe));
3477         wqes[0] = (struct kwqe *) l4kwqe;
3478
3479         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3480         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3481         l4kwqe->cid = csk->cid;
3482
3483         return dev->submit_kwqes(dev, wqes, 1);
3484 }
3485
3486 static int cnic_cm_abort_req(struct cnic_sock *csk)
3487 {
3488         struct cnic_dev *dev = csk->dev;
3489         struct l4_kwq_reset_req *l4kwqe;
3490         struct kwqe *wqes[1];
3491
3492         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3493         memset(l4kwqe, 0, sizeof(*l4kwqe));
3494         wqes[0] = (struct kwqe *) l4kwqe;
3495
3496         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3497         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3498         l4kwqe->cid = csk->cid;
3499
3500         return dev->submit_kwqes(dev, wqes, 1);
3501 }
3502
3503 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3504                           u32 l5_cid, struct cnic_sock **csk, void *context)
3505 {
3506         struct cnic_local *cp = dev->cnic_priv;
3507         struct cnic_sock *csk1;
3508
3509         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3510                 return -EINVAL;
3511
3512         if (cp->ctx_tbl) {
3513                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3514
3515                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3516                         return -EAGAIN;
3517         }
3518
3519         csk1 = &cp->csk_tbl[l5_cid];
3520         if (atomic_read(&csk1->ref_count))
3521                 return -EAGAIN;
3522
3523         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3524                 return -EBUSY;
3525
3526         csk1->dev = dev;
3527         csk1->cid = cid;
3528         csk1->l5_cid = l5_cid;
3529         csk1->ulp_type = ulp_type;
3530         csk1->context = context;
3531
3532         csk1->ka_timeout = DEF_KA_TIMEOUT;
3533         csk1->ka_interval = DEF_KA_INTERVAL;
3534         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3535         csk1->tos = DEF_TOS;
3536         csk1->ttl = DEF_TTL;
3537         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3538         csk1->rcv_buf = DEF_RCV_BUF;
3539         csk1->snd_buf = DEF_SND_BUF;
3540         csk1->seed = DEF_SEED;
3541
3542         *csk = csk1;
3543         return 0;
3544 }
3545
3546 static void cnic_cm_cleanup(struct cnic_sock *csk)
3547 {
3548         if (csk->src_port) {
3549                 struct cnic_dev *dev = csk->dev;
3550                 struct cnic_local *cp = dev->cnic_priv;
3551
3552                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3553                 csk->src_port = 0;
3554         }
3555 }
3556
3557 static void cnic_close_conn(struct cnic_sock *csk)
3558 {
3559         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3560                 cnic_cm_upload_pg(csk);
3561                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3562         }
3563         cnic_cm_cleanup(csk);
3564 }
3565
3566 static int cnic_cm_destroy(struct cnic_sock *csk)
3567 {
3568         if (!cnic_in_use(csk))
3569                 return -EINVAL;
3570
3571         csk_hold(csk);
3572         clear_bit(SK_F_INUSE, &csk->flags);
3573         smp_mb__after_clear_bit();
3574         while (atomic_read(&csk->ref_count) != 1)
3575                 msleep(1);
3576         cnic_cm_cleanup(csk);
3577
3578         csk->flags = 0;
3579         csk_put(csk);
3580         return 0;
3581 }
3582
3583 static inline u16 cnic_get_vlan(struct net_device *dev,
3584                                 struct net_device **vlan_dev)
3585 {
3586         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3587                 *vlan_dev = vlan_dev_real_dev(dev);
3588                 return vlan_dev_vlan_id(dev);
3589         }
3590         *vlan_dev = dev;
3591         return 0;
3592 }
3593
3594 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3595                              struct dst_entry **dst)
3596 {
3597 #if defined(CONFIG_INET)
3598         struct rtable *rt;
3599
3600         rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3601         if (!IS_ERR(rt)) {
3602                 *dst = &rt->dst;
3603                 return 0;
3604         }
3605         return PTR_ERR(rt);
3606 #else
3607         return -ENETUNREACH;
3608 #endif
3609 }
3610
3611 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3612                              struct dst_entry **dst)
3613 {
3614 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3615         struct flowi6 fl6;
3616
3617         memset(&fl6, 0, sizeof(fl6));
3618         fl6.daddr = dst_addr->sin6_addr;
3619         if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3620                 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3621
3622         *dst = ip6_route_output(&init_net, NULL, &fl6);
3623         if ((*dst)->error) {
3624                 dst_release(*dst);
3625                 *dst = NULL;
3626                 return -ENETUNREACH;
3627         } else
3628                 return 0;
3629 #endif
3630
3631         return -ENETUNREACH;
3632 }
3633
3634 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3635                                            int ulp_type)
3636 {
3637         struct cnic_dev *dev = NULL;
3638         struct dst_entry *dst;
3639         struct net_device *netdev = NULL;
3640         int err = -ENETUNREACH;
3641
3642         if (dst_addr->sin_family == AF_INET)
3643                 err = cnic_get_v4_route(dst_addr, &dst);
3644         else if (dst_addr->sin_family == AF_INET6) {
3645                 struct sockaddr_in6 *dst_addr6 =
3646                         (struct sockaddr_in6 *) dst_addr;
3647
3648                 err = cnic_get_v6_route(dst_addr6, &dst);
3649         } else
3650                 return NULL;
3651
3652         if (err)
3653                 return NULL;
3654
3655         if (!dst->dev)
3656                 goto done;
3657
3658         cnic_get_vlan(dst->dev, &netdev);
3659
3660         dev = cnic_from_netdev(netdev);
3661
3662 done:
3663         dst_release(dst);
3664         if (dev)
3665                 cnic_put(dev);
3666         return dev;
3667 }
3668
3669 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3670 {
3671         struct cnic_dev *dev = csk->dev;
3672         struct cnic_local *cp = dev->cnic_priv;
3673
3674         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3675 }
3676
3677 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3678 {
3679         struct cnic_dev *dev = csk->dev;
3680         struct cnic_local *cp = dev->cnic_priv;
3681         int is_v6, rc = 0;
3682         struct dst_entry *dst = NULL;
3683         struct net_device *realdev;
3684         __be16 local_port;
3685         u32 port_id;
3686
3687         if (saddr->local.v6.sin6_family == AF_INET6 &&
3688             saddr->remote.v6.sin6_family == AF_INET6)
3689                 is_v6 = 1;
3690         else if (saddr->local.v4.sin_family == AF_INET &&
3691                  saddr->remote.v4.sin_family == AF_INET)
3692                 is_v6 = 0;
3693         else
3694                 return -EINVAL;
3695
3696         clear_bit(SK_F_IPV6, &csk->flags);
3697
3698         if (is_v6) {
3699                 set_bit(SK_F_IPV6, &csk->flags);
3700                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3701
3702                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3703                        sizeof(struct in6_addr));
3704                 csk->dst_port = saddr->remote.v6.sin6_port;
3705                 local_port = saddr->local.v6.sin6_port;
3706
3707         } else {
3708                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3709
3710                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3711                 csk->dst_port = saddr->remote.v4.sin_port;
3712                 local_port = saddr->local.v4.sin_port;
3713         }
3714
3715         csk->vlan_id = 0;
3716         csk->mtu = dev->netdev->mtu;
3717         if (dst && dst->dev) {
3718                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3719                 if (realdev == dev->netdev) {
3720                         csk->vlan_id = vlan;
3721                         csk->mtu = dst_mtu(dst);
3722                 }
3723         }
3724
3725         port_id = be16_to_cpu(local_port);
3726         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3727             port_id < CNIC_LOCAL_PORT_MAX) {
3728                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3729                         port_id = 0;
3730         } else
3731                 port_id = 0;
3732
3733         if (!port_id) {
3734                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3735                 if (port_id == -1) {
3736                         rc = -ENOMEM;
3737                         goto err_out;
3738                 }
3739                 local_port = cpu_to_be16(port_id);
3740         }
3741         csk->src_port = local_port;
3742
3743 err_out:
3744         dst_release(dst);
3745         return rc;
3746 }
3747
3748 static void cnic_init_csk_state(struct cnic_sock *csk)
3749 {
3750         csk->state = 0;
3751         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3752         clear_bit(SK_F_CLOSING, &csk->flags);
3753 }
3754
3755 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3756 {
3757         struct cnic_local *cp = csk->dev->cnic_priv;
3758         int err = 0;
3759
3760         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3761                 return -EOPNOTSUPP;
3762
3763         if (!cnic_in_use(csk))
3764                 return -EINVAL;
3765
3766         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3767                 return -EINVAL;
3768
3769         cnic_init_csk_state(csk);
3770
3771         err = cnic_get_route(csk, saddr);
3772         if (err)
3773                 goto err_out;
3774
3775         err = cnic_resolve_addr(csk, saddr);
3776         if (!err)
3777                 return 0;
3778
3779 err_out:
3780         clear_bit(SK_F_CONNECT_START, &csk->flags);
3781         return err;
3782 }
3783
3784 static int cnic_cm_abort(struct cnic_sock *csk)
3785 {
3786         struct cnic_local *cp = csk->dev->cnic_priv;
3787         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3788
3789         if (!cnic_in_use(csk))
3790                 return -EINVAL;
3791
3792         if (cnic_abort_prep(csk))
3793                 return cnic_cm_abort_req(csk);
3794
3795         /* Getting here means that we haven't started connect, or
3796          * connect was not successful.
3797          */
3798
3799         cp->close_conn(csk, opcode);
3800         if (csk->state != opcode)
3801                 return -EALREADY;
3802
3803         return 0;
3804 }
3805
3806 static int cnic_cm_close(struct cnic_sock *csk)
3807 {
3808         if (!cnic_in_use(csk))
3809                 return -EINVAL;
3810
3811         if (cnic_close_prep(csk)) {
3812                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3813                 return cnic_cm_close_req(csk);
3814         } else {
3815                 return -EALREADY;
3816         }
3817         return 0;
3818 }
3819
3820 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3821                            u8 opcode)
3822 {
3823         struct cnic_ulp_ops *ulp_ops;
3824         int ulp_type = csk->ulp_type;
3825
3826         rcu_read_lock();
3827         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3828         if (ulp_ops) {
3829                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3830                         ulp_ops->cm_connect_complete(csk);
3831                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3832                         ulp_ops->cm_close_complete(csk);
3833                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3834                         ulp_ops->cm_remote_abort(csk);
3835                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3836                         ulp_ops->cm_abort_complete(csk);
3837                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3838                         ulp_ops->cm_remote_close(csk);
3839         }
3840         rcu_read_unlock();
3841 }
3842
3843 static int cnic_cm_set_pg(struct cnic_sock *csk)
3844 {
3845         if (cnic_offld_prep(csk)) {
3846                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3847                         cnic_cm_update_pg(csk);
3848                 else
3849                         cnic_cm_offload_pg(csk);
3850         }
3851         return 0;
3852 }
3853
3854 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3855 {
3856         struct cnic_local *cp = dev->cnic_priv;
3857         u32 l5_cid = kcqe->pg_host_opaque;
3858         u8 opcode = kcqe->op_code;
3859         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3860
3861         csk_hold(csk);
3862         if (!cnic_in_use(csk))
3863                 goto done;
3864
3865         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3866                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3867                 goto done;
3868         }
3869         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3870         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3871                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3872                 cnic_cm_upcall(cp, csk,
3873                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3874                 goto done;
3875         }
3876
3877         csk->pg_cid = kcqe->pg_cid;
3878         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3879         cnic_cm_conn_req(csk);
3880
3881 done:
3882         csk_put(csk);
3883 }
3884
3885 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3886 {
3887         struct cnic_local *cp = dev->cnic_priv;
3888         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3889         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3890         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3891
3892         ctx->timestamp = jiffies;
3893         ctx->wait_cond = 1;
3894         wake_up(&ctx->waitq);
3895 }
3896
3897 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3898 {
3899         struct cnic_local *cp = dev->cnic_priv;
3900         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3901         u8 opcode = l4kcqe->op_code;
3902         u32 l5_cid;
3903         struct cnic_sock *csk;
3904
3905         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3906                 cnic_process_fcoe_term_conn(dev, kcqe);
3907                 return;
3908         }
3909         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3910             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3911                 cnic_cm_process_offld_pg(dev, l4kcqe);
3912                 return;
3913         }
3914
3915         l5_cid = l4kcqe->conn_id;
3916         if (opcode & 0x80)
3917                 l5_cid = l4kcqe->cid;
3918         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3919                 return;
3920
3921         csk = &cp->csk_tbl[l5_cid];
3922         csk_hold(csk);
3923
3924         if (!cnic_in_use(csk)) {
3925                 csk_put(csk);
3926                 return;
3927         }
3928
3929         switch (opcode) {
3930         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3931                 if (l4kcqe->status != 0) {
3932                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3933                         cnic_cm_upcall(cp, csk,
3934                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3935                 }
3936                 break;
3937         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3938                 if (l4kcqe->status == 0)
3939                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3940                 else if (l4kcqe->status ==
3941                          L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
3942                         set_bit(SK_F_HW_ERR, &csk->flags);
3943
3944                 smp_mb__before_clear_bit();
3945                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3946                 cnic_cm_upcall(cp, csk, opcode);
3947                 break;
3948
3949         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3950         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3951         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3952         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3953         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3954                 if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
3955                         set_bit(SK_F_HW_ERR, &csk->flags);
3956
3957                 cp->close_conn(csk, opcode);
3958                 break;
3959
3960         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3961                 /* after we already sent CLOSE_REQ */
3962                 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
3963                     !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
3964                     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3965                         cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
3966                 else
3967                         cnic_cm_upcall(cp, csk, opcode);
3968                 break;
3969         }
3970         csk_put(csk);
3971 }
3972
3973 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3974 {
3975         struct cnic_dev *dev = data;
3976         int i;
3977
3978         for (i = 0; i < num; i++)
3979                 cnic_cm_process_kcqe(dev, kcqe[i]);
3980 }
3981
3982 static struct cnic_ulp_ops cm_ulp_ops = {
3983         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3984 };
3985
3986 static void cnic_cm_free_mem(struct cnic_dev *dev)
3987 {
3988         struct cnic_local *cp = dev->cnic_priv;
3989
3990         kfree(cp->csk_tbl);
3991         cp->csk_tbl = NULL;
3992         cnic_free_id_tbl(&cp->csk_port_tbl);
3993 }
3994
3995 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3996 {
3997         struct cnic_local *cp = dev->cnic_priv;
3998         u32 port_id;
3999
4000         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
4001                               GFP_KERNEL);
4002         if (!cp->csk_tbl)
4003                 return -ENOMEM;
4004
4005         port_id = random32();
4006         port_id %= CNIC_LOCAL_PORT_RANGE;
4007         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4008                              CNIC_LOCAL_PORT_MIN, port_id)) {
4009                 cnic_cm_free_mem(dev);
4010                 return -ENOMEM;
4011         }
4012         return 0;
4013 }
4014
4015 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
4016 {
4017         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
4018                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
4019                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
4020                 csk->state = opcode;
4021         }
4022
4023         /* 1. If event opcode matches the expected event in csk->state
4024          * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
4025          *    event
4026          * 3. If the expected event is 0, meaning the connection was never
4027          *    never established, we accept the opcode from cm_abort.
4028          */
4029         if (opcode == csk->state || csk->state == 0 ||
4030             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
4031             csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4032                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
4033                         if (csk->state == 0)
4034                                 csk->state = opcode;
4035                         return 1;
4036                 }
4037         }
4038         return 0;
4039 }
4040
4041 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
4042 {
4043         struct cnic_dev *dev = csk->dev;
4044         struct cnic_local *cp = dev->cnic_priv;
4045
4046         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
4047                 cnic_cm_upcall(cp, csk, opcode);
4048                 return;
4049         }
4050
4051         clear_bit(SK_F_CONNECT_START, &csk->flags);
4052         cnic_close_conn(csk);
4053         csk->state = opcode;
4054         cnic_cm_upcall(cp, csk, opcode);
4055 }
4056
4057 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
4058 {
4059 }
4060
4061 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
4062 {
4063         u32 seed;
4064
4065         seed = random32();
4066         cnic_ctx_wr(dev, 45, 0, seed);
4067         return 0;
4068 }
4069
4070 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
4071 {
4072         struct cnic_dev *dev = csk->dev;
4073         struct cnic_local *cp = dev->cnic_priv;
4074         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
4075         union l5cm_specific_data l5_data;
4076         u32 cmd = 0;
4077         int close_complete = 0;
4078
4079         switch (opcode) {
4080         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4081         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4082         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4083                 if (cnic_ready_to_close(csk, opcode)) {
4084                         if (test_bit(SK_F_HW_ERR, &csk->flags))
4085                                 close_complete = 1;
4086                         else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4087                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
4088                         else
4089                                 close_complete = 1;
4090                 }
4091                 break;
4092         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4093                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
4094                 break;
4095         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4096                 close_complete = 1;
4097                 break;
4098         }
4099         if (cmd) {
4100                 memset(&l5_data, 0, sizeof(l5_data));
4101
4102                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
4103                                     &l5_data);
4104         } else if (close_complete) {
4105                 ctx->timestamp = jiffies;
4106                 cnic_close_conn(csk);
4107                 cnic_cm_upcall(cp, csk, csk->state);
4108         }
4109 }
4110
4111 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
4112 {
4113         struct cnic_local *cp = dev->cnic_priv;
4114
4115         if (!cp->ctx_tbl)
4116                 return;
4117
4118         if (!netif_running(dev->netdev))
4119                 return;
4120
4121         cnic_bnx2x_delete_wait(dev, 0);
4122
4123         cancel_delayed_work(&cp->delete_task);
4124         flush_workqueue(cnic_wq);
4125
4126         if (atomic_read(&cp->iscsi_conn) != 0)
4127                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
4128                             atomic_read(&cp->iscsi_conn));
4129 }
4130
4131 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
4132 {
4133         struct cnic_local *cp = dev->cnic_priv;
4134         u32 pfid = cp->pfid;
4135         u32 port = CNIC_PORT(cp);
4136
4137         cnic_init_bnx2x_mac(dev);
4138         cnic_bnx2x_set_tcp_timestamp(dev, 1);
4139
4140         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4141                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4142
4143         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4144                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4145         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4146                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4147                 DEF_MAX_DA_COUNT);
4148
4149         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4150                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4151         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4152                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4153         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4154                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4155         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4156                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4157
4158         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4159                 DEF_MAX_CWND);
4160         return 0;
4161 }
4162
4163 static void cnic_delete_task(struct work_struct *work)
4164 {
4165         struct cnic_local *cp;
4166         struct cnic_dev *dev;
4167         u32 i;
4168         int need_resched = 0;
4169
4170         cp = container_of(work, struct cnic_local, delete_task.work);
4171         dev = cp->dev;
4172
4173         if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4174                 struct drv_ctl_info info;
4175
4176                 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4177
4178                 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4179                 cp->ethdev->drv_ctl(dev->netdev, &info);
4180         }
4181
4182         for (i = 0; i < cp->max_cid_space; i++) {
4183                 struct cnic_context *ctx = &cp->ctx_tbl[i];
4184                 int err;
4185
4186                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4187                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4188                         continue;
4189
4190                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4191                         need_resched = 1;
4192                         continue;
4193                 }
4194
4195                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4196                         continue;
4197
4198                 err = cnic_bnx2x_destroy_ramrod(dev, i);
4199
4200                 cnic_free_bnx2x_conn_resc(dev, i);
4201                 if (!err) {
4202                         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4203                                 atomic_dec(&cp->iscsi_conn);
4204
4205                         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4206                 }
4207         }
4208
4209         if (need_resched)
4210                 queue_delayed_work(cnic_wq, &cp->delete_task,
4211                                    msecs_to_jiffies(10));
4212
4213 }
4214
4215 static int cnic_cm_open(struct cnic_dev *dev)
4216 {
4217         struct cnic_local *cp = dev->cnic_priv;
4218         int err;
4219
4220         err = cnic_cm_alloc_mem(dev);
4221         if (err)
4222                 return err;
4223
4224         err = cp->start_cm(dev);
4225
4226         if (err)
4227                 goto err_out;
4228
4229         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4230
4231         dev->cm_create = cnic_cm_create;
4232         dev->cm_destroy = cnic_cm_destroy;
4233         dev->cm_connect = cnic_cm_connect;
4234         dev->cm_abort = cnic_cm_abort;
4235         dev->cm_close = cnic_cm_close;
4236         dev->cm_select_dev = cnic_cm_select_dev;
4237
4238         cp->ulp_handle[CNIC_ULP_L4] = dev;
4239         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4240         return 0;
4241
4242 err_out:
4243         cnic_cm_free_mem(dev);
4244         return err;
4245 }
4246
4247 static int cnic_cm_shutdown(struct cnic_dev *dev)
4248 {
4249         struct cnic_local *cp = dev->cnic_priv;
4250         int i;
4251
4252         cp->stop_cm(dev);
4253
4254         if (!cp->csk_tbl)
4255                 return 0;
4256
4257         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4258                 struct cnic_sock *csk = &cp->csk_tbl[i];
4259
4260                 clear_bit(SK_F_INUSE, &csk->flags);
4261                 cnic_cm_cleanup(csk);
4262         }
4263         cnic_cm_free_mem(dev);
4264
4265         return 0;
4266 }
4267
4268 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4269 {
4270         u32 cid_addr;
4271         int i;
4272
4273         cid_addr = GET_CID_ADDR(cid);
4274
4275         for (i = 0; i < CTX_SIZE; i += 4)
4276                 cnic_ctx_wr(dev, cid_addr, i, 0);
4277 }
4278
4279 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4280 {
4281         struct cnic_local *cp = dev->cnic_priv;
4282         int ret = 0, i;
4283         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4284
4285         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4286                 return 0;
4287
4288         for (i = 0; i < cp->ctx_blks; i++) {
4289                 int j;
4290                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4291                 u32 val;
4292
4293                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
4294
4295                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4296                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4297                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4298                         (u64) cp->ctx_arr[i].mapping >> 32);
4299                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4300                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4301                 for (j = 0; j < 10; j++) {
4302
4303                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4304                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4305                                 break;
4306                         udelay(5);
4307                 }
4308                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4309                         ret = -EBUSY;
4310                         break;
4311                 }
4312         }
4313         return ret;
4314 }
4315
4316 static void cnic_free_irq(struct cnic_dev *dev)
4317 {
4318         struct cnic_local *cp = dev->cnic_priv;
4319         struct cnic_eth_dev *ethdev = cp->ethdev;
4320
4321         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4322                 cp->disable_int_sync(dev);
4323                 tasklet_kill(&cp->cnic_irq_task);
4324                 free_irq(ethdev->irq_arr[0].vector, dev);
4325         }
4326 }
4327
4328 static int cnic_request_irq(struct cnic_dev *dev)
4329 {
4330         struct cnic_local *cp = dev->cnic_priv;
4331         struct cnic_eth_dev *ethdev = cp->ethdev;
4332         int err;
4333
4334         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4335         if (err)
4336                 tasklet_disable(&cp->cnic_irq_task);
4337
4338         return err;
4339 }
4340
4341 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4342 {
4343         struct cnic_local *cp = dev->cnic_priv;
4344         struct cnic_eth_dev *ethdev = cp->ethdev;
4345
4346         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4347                 int err, i = 0;
4348                 int sblk_num = cp->status_blk_num;
4349                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4350                            BNX2_HC_SB_CONFIG_1;
4351
4352                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4353
4354                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4355                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4356                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4357
4358                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4359                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4360                              (unsigned long) dev);
4361                 err = cnic_request_irq(dev);
4362                 if (err)
4363                         return err;
4364
4365                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4366                        i < 10) {
4367                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4368                                 1 << (11 + sblk_num));
4369                         udelay(10);
4370                         i++;
4371                         barrier();
4372                 }
4373                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4374                         cnic_free_irq(dev);
4375                         goto failed;
4376                 }
4377
4378         } else {
4379                 struct status_block *sblk = cp->status_blk.gen;
4380                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4381                 int i = 0;
4382
4383                 while (sblk->status_completion_producer_index && i < 10) {
4384                         CNIC_WR(dev, BNX2_HC_COMMAND,
4385                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4386                         udelay(10);
4387                         i++;
4388                         barrier();
4389                 }
4390                 if (sblk->status_completion_producer_index)
4391                         goto failed;
4392
4393         }
4394         return 0;
4395
4396 failed:
4397         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4398         return -EBUSY;
4399 }
4400
4401 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4402 {
4403         struct cnic_local *cp = dev->cnic_priv;
4404         struct cnic_eth_dev *ethdev = cp->ethdev;
4405
4406         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4407                 return;
4408
4409         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4410                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4411 }
4412
4413 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4414 {
4415         struct cnic_local *cp = dev->cnic_priv;
4416         struct cnic_eth_dev *ethdev = cp->ethdev;
4417
4418         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4419                 return;
4420
4421         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4422                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4423         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4424         synchronize_irq(ethdev->irq_arr[0].vector);
4425 }
4426
4427 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4428 {
4429         struct cnic_local *cp = dev->cnic_priv;
4430         struct cnic_eth_dev *ethdev = cp->ethdev;
4431         struct cnic_uio_dev *udev = cp->udev;
4432         u32 cid_addr, tx_cid, sb_id;
4433         u32 val, offset0, offset1, offset2, offset3;
4434         int i;
4435         struct tx_bd *txbd;
4436         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4437         struct status_block *s_blk = cp->status_blk.gen;
4438
4439         sb_id = cp->status_blk_num;
4440         tx_cid = 20;
4441         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4442         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4443                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4444
4445                 tx_cid = TX_TSS_CID + sb_id - 1;
4446                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4447                         (TX_TSS_CID << 7));
4448                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4449         }
4450         cp->tx_cons = *cp->tx_cons_ptr;
4451
4452         cid_addr = GET_CID_ADDR(tx_cid);
4453         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
4454                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4455
4456                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4457                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4458
4459                 offset0 = BNX2_L2CTX_TYPE_XI;
4460                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4461                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4462                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4463         } else {
4464                 cnic_init_context(dev, tx_cid);
4465                 cnic_init_context(dev, tx_cid + 1);
4466
4467                 offset0 = BNX2_L2CTX_TYPE;
4468                 offset1 = BNX2_L2CTX_CMD_TYPE;
4469                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4470                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4471         }
4472         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4473         cnic_ctx_wr(dev, cid_addr, offset0, val);
4474
4475         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4476         cnic_ctx_wr(dev, cid_addr, offset1, val);
4477
4478         txbd = udev->l2_ring;
4479
4480         buf_map = udev->l2_buf_map;
4481         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
4482                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4483                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4484         }
4485         val = (u64) ring_map >> 32;
4486         cnic_ctx_wr(dev, cid_addr, offset2, val);
4487         txbd->tx_bd_haddr_hi = val;
4488
4489         val = (u64) ring_map & 0xffffffff;
4490         cnic_ctx_wr(dev, cid_addr, offset3, val);
4491         txbd->tx_bd_haddr_lo = val;
4492 }
4493
4494 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4495 {
4496         struct cnic_local *cp = dev->cnic_priv;
4497         struct cnic_eth_dev *ethdev = cp->ethdev;
4498         struct cnic_uio_dev *udev = cp->udev;
4499         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4500         int i;
4501         struct rx_bd *rxbd;
4502         struct status_block *s_blk = cp->status_blk.gen;
4503         dma_addr_t ring_map = udev->l2_ring_map;
4504
4505         sb_id = cp->status_blk_num;
4506         cnic_init_context(dev, 2);
4507         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4508         coal_reg = BNX2_HC_COMMAND;
4509         coal_val = CNIC_RD(dev, coal_reg);
4510         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4511                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4512
4513                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4514                 coal_reg = BNX2_HC_COALESCE_NOW;
4515                 coal_val = 1 << (11 + sb_id);
4516         }
4517         i = 0;
4518         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4519                 CNIC_WR(dev, coal_reg, coal_val);
4520                 udelay(10);
4521                 i++;
4522                 barrier();
4523         }
4524         cp->rx_cons = *cp->rx_cons_ptr;
4525
4526         cid_addr = GET_CID_ADDR(2);
4527         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4528               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4529         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4530
4531         if (sb_id == 0)
4532                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4533         else
4534                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4535         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4536
4537         rxbd = udev->l2_ring + BCM_PAGE_SIZE;
4538         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
4539                 dma_addr_t buf_map;
4540                 int n = (i % cp->l2_rx_ring_size) + 1;
4541
4542                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4543                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4544                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4545                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4546                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4547         }
4548         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4549         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4550         rxbd->rx_bd_haddr_hi = val;
4551
4552         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4553         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4554         rxbd->rx_bd_haddr_lo = val;
4555
4556         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4557         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4558 }
4559
4560 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4561 {
4562         struct kwqe *wqes[1], l2kwqe;
4563
4564         memset(&l2kwqe, 0, sizeof(l2kwqe));
4565         wqes[0] = &l2kwqe;
4566         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4567                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4568                                KWQE_OPCODE_SHIFT) | 2;
4569         dev->submit_kwqes(dev, wqes, 1);
4570 }
4571
4572 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4573 {
4574         struct cnic_local *cp = dev->cnic_priv;
4575         u32 val;
4576
4577         val = cp->func << 2;
4578
4579         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4580
4581         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4582                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4583         dev->mac_addr[0] = (u8) (val >> 8);
4584         dev->mac_addr[1] = (u8) val;
4585
4586         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4587
4588         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4589                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4590         dev->mac_addr[2] = (u8) (val >> 24);
4591         dev->mac_addr[3] = (u8) (val >> 16);
4592         dev->mac_addr[4] = (u8) (val >> 8);
4593         dev->mac_addr[5] = (u8) val;
4594
4595         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4596
4597         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4598         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4599                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4600
4601         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4602         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4603         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4604 }
4605
4606 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4607 {
4608         struct cnic_local *cp = dev->cnic_priv;
4609         struct cnic_eth_dev *ethdev = cp->ethdev;
4610         struct status_block *sblk = cp->status_blk.gen;
4611         u32 val, kcq_cid_addr, kwq_cid_addr;
4612         int err;
4613
4614         cnic_set_bnx2_mac(dev);
4615
4616         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4617         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4618         if (BCM_PAGE_BITS > 12)
4619                 val |= (12 - 8)  << 4;
4620         else
4621                 val |= (BCM_PAGE_BITS - 8)  << 4;
4622
4623         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4624
4625         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4626         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4627         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4628
4629         err = cnic_setup_5709_context(dev, 1);
4630         if (err)
4631                 return err;
4632
4633         cnic_init_context(dev, KWQ_CID);
4634         cnic_init_context(dev, KCQ_CID);
4635
4636         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4637         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4638
4639         cp->max_kwq_idx = MAX_KWQ_IDX;
4640         cp->kwq_prod_idx = 0;
4641         cp->kwq_con_idx = 0;
4642         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4643
4644         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
4645                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4646         else
4647                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4648
4649         /* Initialize the kernel work queue context. */
4650         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4651               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4652         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4653
4654         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4655         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4656
4657         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4658         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4659
4660         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4661         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4662
4663         val = (u32) cp->kwq_info.pgtbl_map;
4664         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4665
4666         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4667         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4668
4669         cp->kcq1.sw_prod_idx = 0;
4670         cp->kcq1.hw_prod_idx_ptr =
4671                 (u16 *) &sblk->status_completion_producer_index;
4672
4673         cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
4674
4675         /* Initialize the kernel complete queue context. */
4676         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4677               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4678         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4679
4680         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4681         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4682
4683         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4684         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4685
4686         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4687         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4688
4689         val = (u32) cp->kcq1.dma.pgtbl_map;
4690         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4691
4692         cp->int_num = 0;
4693         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4694                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4695                 u32 sb_id = cp->status_blk_num;
4696                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4697
4698                 cp->kcq1.hw_prod_idx_ptr =
4699                         (u16 *) &msblk->status_completion_producer_index;
4700                 cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
4701                 cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
4702                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4703                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4704                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4705         }
4706
4707         /* Enable Commnad Scheduler notification when we write to the
4708          * host producer index of the kernel contexts. */
4709         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4710
4711         /* Enable Command Scheduler notification when we write to either
4712          * the Send Queue or Receive Queue producer indexes of the kernel
4713          * bypass contexts. */
4714         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4715         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4716
4717         /* Notify COM when the driver post an application buffer. */
4718         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4719
4720         /* Set the CP and COM doorbells.  These two processors polls the
4721          * doorbell for a non zero value before running.  This must be done
4722          * after setting up the kernel queue contexts. */
4723         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4724         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4725
4726         cnic_init_bnx2_tx_ring(dev);
4727         cnic_init_bnx2_rx_ring(dev);
4728
4729         err = cnic_init_bnx2_irq(dev);
4730         if (err) {
4731                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4732                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4733                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4734                 return err;
4735         }
4736
4737         return 0;
4738 }
4739
4740 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4741 {
4742         struct cnic_local *cp = dev->cnic_priv;
4743         struct cnic_eth_dev *ethdev = cp->ethdev;
4744         u32 start_offset = ethdev->ctx_tbl_offset;
4745         int i;
4746
4747         for (i = 0; i < cp->ctx_blks; i++) {
4748                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4749                 dma_addr_t map = ctx->mapping;
4750
4751                 if (cp->ctx_align) {
4752                         unsigned long mask = cp->ctx_align - 1;
4753
4754                         map = (map + mask) & ~mask;
4755                 }
4756
4757                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4758         }
4759 }
4760
4761 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4762 {
4763         struct cnic_local *cp = dev->cnic_priv;
4764         struct cnic_eth_dev *ethdev = cp->ethdev;
4765         int err = 0;
4766
4767         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4768                      (unsigned long) dev);
4769         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4770                 err = cnic_request_irq(dev);
4771
4772         return err;
4773 }
4774
4775 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4776                                                 u16 sb_id, u8 sb_index,
4777                                                 u8 disable)
4778 {
4779
4780         u32 addr = BAR_CSTRORM_INTMEM +
4781                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4782                         offsetof(struct hc_status_block_data_e1x, index_data) +
4783                         sizeof(struct hc_index_data)*sb_index +
4784                         offsetof(struct hc_index_data, flags);
4785         u16 flags = CNIC_RD16(dev, addr);
4786         /* clear and set */
4787         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4788         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4789                   HC_INDEX_DATA_HC_ENABLED);
4790         CNIC_WR16(dev, addr, flags);
4791 }
4792
4793 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4794 {
4795         struct cnic_local *cp = dev->cnic_priv;
4796         u8 sb_id = cp->status_blk_num;
4797
4798         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4799                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4800                         offsetof(struct hc_status_block_data_e1x, index_data) +
4801                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4802                         offsetof(struct hc_index_data, timeout), 64 / 4);
4803         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4804 }
4805
4806 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4807 {
4808 }
4809
4810 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4811                                     struct client_init_ramrod_data *data)
4812 {
4813         struct cnic_local *cp = dev->cnic_priv;
4814         struct cnic_uio_dev *udev = cp->udev;
4815         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4816         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4817         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4818         int i;
4819         u32 cli = cp->ethdev->iscsi_l2_client_id;
4820         u32 val;
4821
4822         memset(txbd, 0, BCM_PAGE_SIZE);
4823
4824         buf_map = udev->l2_buf_map;
4825         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4826                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4827                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4828
4829                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4830                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4831                 reg_bd->addr_hi = start_bd->addr_hi;
4832                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4833                 start_bd->nbytes = cpu_to_le16(0x10);
4834                 start_bd->nbd = cpu_to_le16(3);
4835                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4836                 start_bd->general_data = (UNICAST_ADDRESS <<
4837                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
4838                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4839
4840         }
4841
4842         val = (u64) ring_map >> 32;
4843         txbd->next_bd.addr_hi = cpu_to_le32(val);
4844
4845         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4846
4847         val = (u64) ring_map & 0xffffffff;
4848         txbd->next_bd.addr_lo = cpu_to_le32(val);
4849
4850         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4851
4852         /* Other ramrod params */
4853         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4854         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4855
4856         /* reset xstorm per client statistics */
4857         if (cli < MAX_STAT_COUNTER_ID) {
4858                 data->general.statistics_zero_flg = 1;
4859                 data->general.statistics_en_flg = 1;
4860                 data->general.statistics_counter_id = cli;
4861         }
4862
4863         cp->tx_cons_ptr =
4864                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4865 }
4866
4867 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4868                                     struct client_init_ramrod_data *data)
4869 {
4870         struct cnic_local *cp = dev->cnic_priv;
4871         struct cnic_uio_dev *udev = cp->udev;
4872         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4873                                 BCM_PAGE_SIZE);
4874         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4875                                 (udev->l2_ring + (2 * BCM_PAGE_SIZE));
4876         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4877         int i;
4878         u32 cli = cp->ethdev->iscsi_l2_client_id;
4879         int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4880         u32 val;
4881         dma_addr_t ring_map = udev->l2_ring_map;
4882
4883         /* General data */
4884         data->general.client_id = cli;
4885         data->general.activate_flg = 1;
4886         data->general.sp_client_id = cli;
4887         data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4888         data->general.func_id = cp->pfid;
4889
4890         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4891                 dma_addr_t buf_map;
4892                 int n = (i % cp->l2_rx_ring_size) + 1;
4893
4894                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4895                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4896                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4897         }
4898
4899         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4900         rxbd->addr_hi = cpu_to_le32(val);
4901         data->rx.bd_page_base.hi = cpu_to_le32(val);
4902
4903         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4904         rxbd->addr_lo = cpu_to_le32(val);
4905         data->rx.bd_page_base.lo = cpu_to_le32(val);
4906
4907         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4908         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4909         rxcqe->addr_hi = cpu_to_le32(val);
4910         data->rx.cqe_page_base.hi = cpu_to_le32(val);
4911
4912         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4913         rxcqe->addr_lo = cpu_to_le32(val);
4914         data->rx.cqe_page_base.lo = cpu_to_le32(val);
4915
4916         /* Other ramrod params */
4917         data->rx.client_qzone_id = cl_qzone_id;
4918         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
4919         data->rx.status_block_id = BNX2X_DEF_SB_ID;
4920
4921         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4922
4923         data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
4924         data->rx.outer_vlan_removal_enable_flg = 1;
4925         data->rx.silent_vlan_removal_flg = 1;
4926         data->rx.silent_vlan_value = 0;
4927         data->rx.silent_vlan_mask = 0xffff;
4928
4929         cp->rx_cons_ptr =
4930                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4931         cp->rx_cons = *cp->rx_cons_ptr;
4932 }
4933
4934 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
4935 {
4936         struct cnic_local *cp = dev->cnic_priv;
4937         u32 pfid = cp->pfid;
4938
4939         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4940                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4941         cp->kcq1.sw_prod_idx = 0;
4942
4943         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4944                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4945
4946                 cp->kcq1.hw_prod_idx_ptr =
4947                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4948                 cp->kcq1.status_idx_ptr =
4949                         &sb->sb.running_index[SM_RX_ID];
4950         } else {
4951                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
4952
4953                 cp->kcq1.hw_prod_idx_ptr =
4954                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4955                 cp->kcq1.status_idx_ptr =
4956                         &sb->sb.running_index[SM_RX_ID];
4957         }
4958
4959         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4960                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4961
4962                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
4963                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
4964                 cp->kcq2.sw_prod_idx = 0;
4965                 cp->kcq2.hw_prod_idx_ptr =
4966                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
4967                 cp->kcq2.status_idx_ptr =
4968                         &sb->sb.running_index[SM_RX_ID];
4969         }
4970 }
4971
4972 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4973 {
4974         struct cnic_local *cp = dev->cnic_priv;
4975         struct cnic_eth_dev *ethdev = cp->ethdev;
4976         int func = CNIC_FUNC(cp), ret;
4977         u32 pfid;
4978
4979         dev->stats_addr = ethdev->addr_drv_info_to_mcp;
4980         cp->port_mode = CHIP_PORT_MODE_NONE;
4981
4982         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4983                 u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);
4984
4985                 if (!(val & 1))
4986                         val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN);
4987                 else
4988                         val = (val >> 1) & 1;
4989
4990                 if (val) {
4991                         cp->port_mode = CHIP_4_PORT_MODE;
4992                         cp->pfid = func >> 1;
4993                 } else {
4994                         cp->port_mode = CHIP_2_PORT_MODE;
4995                         cp->pfid = func & 0x6;
4996                 }
4997         } else {
4998                 cp->pfid = func;
4999         }
5000         pfid = cp->pfid;
5001
5002         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5003                                cp->iscsi_start_cid, 0);
5004
5005         if (ret)
5006                 return -ENOMEM;
5007
5008         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
5009                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5010                                         cp->fcoe_start_cid, 0);
5011
5012                 if (ret)
5013                         return -ENOMEM;
5014         }
5015
5016         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
5017
5018         cnic_init_bnx2x_kcq(dev);
5019
5020         /* Only 1 EQ */
5021         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5022         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5023                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5024         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5025                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5026                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5027         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5028                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5029                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5030         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5031                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5032                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5033         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5034                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5035                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5036         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5037                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5038         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5039                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5040         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5041                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5042                 HC_INDEX_ISCSI_EQ_CONS);
5043
5044         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5045                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5046                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
5047         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5048                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5049                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
5050
5051         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
5052                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
5053
5054         cnic_setup_bnx2x_context(dev);
5055
5056         ret = cnic_init_bnx2x_irq(dev);
5057         if (ret)
5058                 return ret;
5059
5060         return 0;
5061 }
5062
5063 static void cnic_init_rings(struct cnic_dev *dev)
5064 {
5065         struct cnic_local *cp = dev->cnic_priv;
5066         struct cnic_uio_dev *udev = cp->udev;
5067
5068         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5069                 return;
5070
5071         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5072                 cnic_init_bnx2_tx_ring(dev);
5073                 cnic_init_bnx2_rx_ring(dev);
5074                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5075         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5076                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5077                 u32 cid = cp->ethdev->iscsi_l2_cid;
5078                 u32 cl_qzone_id;
5079                 struct client_init_ramrod_data *data;
5080                 union l5cm_specific_data l5_data;
5081                 struct ustorm_eth_rx_producers rx_prods = {0};
5082                 u32 off, i, *cid_ptr;
5083
5084                 rx_prods.bd_prod = 0;
5085                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
5086                 barrier();
5087
5088                 cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
5089
5090                 off = BAR_USTRORM_INTMEM +
5091                         (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) ?
5092                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
5093                          USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
5094
5095                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5096                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5097
5098                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5099
5100                 data = udev->l2_buf;
5101                 cid_ptr = udev->l2_buf + 12;
5102
5103                 memset(data, 0, sizeof(*data));
5104
5105                 cnic_init_bnx2x_tx_ring(dev, data);
5106                 cnic_init_bnx2x_rx_ring(dev, data);
5107
5108                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5109                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5110
5111                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5112
5113                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5114                         cid, ETH_CONNECTION_TYPE, &l5_data);
5115
5116                 i = 0;
5117                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5118                        ++i < 10)
5119                         msleep(1);
5120
5121                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5122                         netdev_err(dev->netdev,
5123                                 "iSCSI CLIENT_SETUP did not complete\n");
5124                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5125                 cnic_ring_ctl(dev, cid, cli, 1);
5126                 *cid_ptr = cid;
5127         }
5128 }
5129
5130 static void cnic_shutdown_rings(struct cnic_dev *dev)
5131 {
5132         struct cnic_local *cp = dev->cnic_priv;
5133         struct cnic_uio_dev *udev = cp->udev;
5134         void *rx_ring;
5135
5136         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5137                 return;
5138
5139         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5140                 cnic_shutdown_bnx2_rx_ring(dev);
5141         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5142                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5143                 u32 cid = cp->ethdev->iscsi_l2_cid;
5144                 union l5cm_specific_data l5_data;
5145                 int i;
5146
5147                 cnic_ring_ctl(dev, cid, cli, 0);
5148
5149                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5150
5151                 l5_data.phy_address.lo = cli;
5152                 l5_data.phy_address.hi = 0;
5153                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5154                         cid, ETH_CONNECTION_TYPE, &l5_data);
5155                 i = 0;
5156                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5157                        ++i < 10)
5158                         msleep(1);
5159
5160                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5161                         netdev_err(dev->netdev,
5162                                 "iSCSI CLIENT_HALT did not complete\n");
5163                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5164
5165                 memset(&l5_data, 0, sizeof(l5_data));
5166                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5167                         cid, NONE_CONNECTION_TYPE, &l5_data);
5168                 msleep(10);
5169         }
5170         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5171         rx_ring = udev->l2_ring + BCM_PAGE_SIZE;
5172         memset(rx_ring, 0, BCM_PAGE_SIZE);
5173 }
5174
5175 static int cnic_register_netdev(struct cnic_dev *dev)
5176 {
5177         struct cnic_local *cp = dev->cnic_priv;
5178         struct cnic_eth_dev *ethdev = cp->ethdev;
5179         int err;
5180
5181         if (!ethdev)
5182                 return -ENODEV;
5183
5184         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5185                 return 0;
5186
5187         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5188         if (err)
5189                 netdev_err(dev->netdev, "register_cnic failed\n");
5190
5191         return err;
5192 }
5193
5194 static void cnic_unregister_netdev(struct cnic_dev *dev)
5195 {
5196         struct cnic_local *cp = dev->cnic_priv;
5197         struct cnic_eth_dev *ethdev = cp->ethdev;
5198
5199         if (!ethdev)
5200                 return;
5201
5202         ethdev->drv_unregister_cnic(dev->netdev);
5203 }
5204
5205 static int cnic_start_hw(struct cnic_dev *dev)
5206 {
5207         struct cnic_local *cp = dev->cnic_priv;
5208         struct cnic_eth_dev *ethdev = cp->ethdev;
5209         int err;
5210
5211         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5212                 return -EALREADY;
5213
5214         dev->regview = ethdev->io_base;
5215         pci_dev_get(dev->pcidev);
5216         cp->func = PCI_FUNC(dev->pcidev->devfn);
5217         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5218         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5219
5220         err = cp->alloc_resc(dev);
5221         if (err) {
5222                 netdev_err(dev->netdev, "allocate resource failure\n");
5223                 goto err1;
5224         }
5225
5226         err = cp->start_hw(dev);
5227         if (err)
5228                 goto err1;
5229
5230         err = cnic_cm_open(dev);
5231         if (err)
5232                 goto err1;
5233
5234         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5235
5236         cp->enable_int(dev);
5237
5238         return 0;
5239
5240 err1:
5241         cp->free_resc(dev);
5242         pci_dev_put(dev->pcidev);
5243         return err;
5244 }
5245
5246 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5247 {
5248         cnic_disable_bnx2_int_sync(dev);
5249
5250         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5251         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5252
5253         cnic_init_context(dev, KWQ_CID);
5254         cnic_init_context(dev, KCQ_CID);
5255
5256         cnic_setup_5709_context(dev, 0);
5257         cnic_free_irq(dev);
5258
5259         cnic_free_resc(dev);
5260 }
5261
5262
5263 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5264 {
5265         struct cnic_local *cp = dev->cnic_priv;
5266
5267         cnic_free_irq(dev);
5268         *cp->kcq1.hw_prod_idx_ptr = 0;
5269         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5270                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5271         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5272         cnic_free_resc(dev);
5273 }
5274
5275 static void cnic_stop_hw(struct cnic_dev *dev)
5276 {
5277         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5278                 struct cnic_local *cp = dev->cnic_priv;
5279                 int i = 0;
5280
5281                 /* Need to wait for the ring shutdown event to complete
5282                  * before clearing the CNIC_UP flag.
5283                  */
5284                 while (cp->udev->uio_dev != -1 && i < 15) {
5285                         msleep(100);
5286                         i++;
5287                 }
5288                 cnic_shutdown_rings(dev);
5289                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5290                 RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5291                 synchronize_rcu();
5292                 cnic_cm_shutdown(dev);
5293                 cp->stop_hw(dev);
5294                 pci_dev_put(dev->pcidev);
5295         }
5296 }
5297
5298 static void cnic_free_dev(struct cnic_dev *dev)
5299 {
5300         int i = 0;
5301
5302         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5303                 msleep(100);
5304                 i++;
5305         }
5306         if (atomic_read(&dev->ref_count) != 0)
5307                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5308
5309         netdev_info(dev->netdev, "Removed CNIC device\n");
5310         dev_put(dev->netdev);
5311         kfree(dev);
5312 }
5313
5314 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5315                                        struct pci_dev *pdev)
5316 {
5317         struct cnic_dev *cdev;
5318         struct cnic_local *cp;
5319         int alloc_size;
5320
5321         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5322
5323         cdev = kzalloc(alloc_size , GFP_KERNEL);
5324         if (cdev == NULL) {
5325                 netdev_err(dev, "allocate dev struct failure\n");
5326                 return NULL;
5327         }
5328
5329         cdev->netdev = dev;
5330         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5331         cdev->register_device = cnic_register_device;
5332         cdev->unregister_device = cnic_unregister_device;
5333         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5334
5335         cp = cdev->cnic_priv;
5336         cp->dev = cdev;
5337         cp->l2_single_buf_size = 0x400;
5338         cp->l2_rx_ring_size = 3;
5339
5340         spin_lock_init(&cp->cnic_ulp_lock);
5341
5342         netdev_info(dev, "Added CNIC device\n");
5343
5344         return cdev;
5345 }
5346
5347 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5348 {
5349         struct pci_dev *pdev;
5350         struct cnic_dev *cdev;
5351         struct cnic_local *cp;
5352         struct cnic_eth_dev *ethdev = NULL;
5353         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5354
5355         probe = symbol_get(bnx2_cnic_probe);
5356         if (probe) {
5357                 ethdev = (*probe)(dev);
5358                 symbol_put(bnx2_cnic_probe);
5359         }
5360         if (!ethdev)
5361                 return NULL;
5362
5363         pdev = ethdev->pdev;
5364         if (!pdev)
5365                 return NULL;
5366
5367         dev_hold(dev);
5368         pci_dev_get(pdev);
5369         if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5370              pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5371             (pdev->revision < 0x10)) {
5372                 pci_dev_put(pdev);
5373                 goto cnic_err;
5374         }
5375         pci_dev_put(pdev);
5376
5377         cdev = cnic_alloc_dev(dev, pdev);
5378         if (cdev == NULL)
5379                 goto cnic_err;
5380
5381         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5382         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5383
5384         cp = cdev->cnic_priv;
5385         cp->ethdev = ethdev;
5386         cdev->pcidev = pdev;
5387         cp->chip_id = ethdev->chip_id;
5388
5389         cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5390
5391         cp->cnic_ops = &cnic_bnx2_ops;
5392         cp->start_hw = cnic_start_bnx2_hw;
5393         cp->stop_hw = cnic_stop_bnx2_hw;
5394         cp->setup_pgtbl = cnic_setup_page_tbl;
5395         cp->alloc_resc = cnic_alloc_bnx2_resc;
5396         cp->free_resc = cnic_free_resc;
5397         cp->start_cm = cnic_cm_init_bnx2_hw;
5398         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5399         cp->enable_int = cnic_enable_bnx2_int;
5400         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5401         cp->close_conn = cnic_close_bnx2_conn;
5402         return cdev;
5403
5404 cnic_err:
5405         dev_put(dev);
5406         return NULL;
5407 }
5408
5409 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5410 {
5411         struct pci_dev *pdev;
5412         struct cnic_dev *cdev;
5413         struct cnic_local *cp;
5414         struct cnic_eth_dev *ethdev = NULL;
5415         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5416
5417         probe = symbol_get(bnx2x_cnic_probe);
5418         if (probe) {
5419                 ethdev = (*probe)(dev);
5420                 symbol_put(bnx2x_cnic_probe);
5421         }
5422         if (!ethdev)
5423                 return NULL;
5424
5425         pdev = ethdev->pdev;
5426         if (!pdev)
5427                 return NULL;
5428
5429         dev_hold(dev);
5430         cdev = cnic_alloc_dev(dev, pdev);
5431         if (cdev == NULL) {
5432                 dev_put(dev);
5433                 return NULL;
5434         }
5435
5436         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5437         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5438
5439         cp = cdev->cnic_priv;
5440         cp->ethdev = ethdev;
5441         cdev->pcidev = pdev;
5442         cp->chip_id = ethdev->chip_id;
5443
5444         cdev->stats_addr = ethdev->addr_drv_info_to_mcp;
5445
5446         if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5447                 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5448         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
5449             !(ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE))
5450                 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5451
5452         if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
5453                 cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
5454
5455         memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);
5456
5457         cp->cnic_ops = &cnic_bnx2x_ops;
5458         cp->start_hw = cnic_start_bnx2x_hw;
5459         cp->stop_hw = cnic_stop_bnx2x_hw;
5460         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5461         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5462         cp->free_resc = cnic_free_resc;
5463         cp->start_cm = cnic_cm_init_bnx2x_hw;
5464         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5465         cp->enable_int = cnic_enable_bnx2x_int;
5466         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5467         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
5468                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5469         else
5470                 cp->ack_int = cnic_ack_bnx2x_msix;
5471         cp->close_conn = cnic_close_bnx2x_conn;
5472         return cdev;
5473 }
5474
5475 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5476 {
5477         struct ethtool_drvinfo drvinfo;
5478         struct cnic_dev *cdev = NULL;
5479
5480         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5481                 memset(&drvinfo, 0, sizeof(drvinfo));
5482                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5483
5484                 if (!strcmp(drvinfo.driver, "bnx2"))
5485                         cdev = init_bnx2_cnic(dev);
5486                 if (!strcmp(drvinfo.driver, "bnx2x"))
5487                         cdev = init_bnx2x_cnic(dev);
5488                 if (cdev) {
5489                         write_lock(&cnic_dev_lock);
5490                         list_add(&cdev->list, &cnic_dev_list);
5491                         write_unlock(&cnic_dev_lock);
5492                 }
5493         }
5494         return cdev;
5495 }
5496
5497 static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
5498                               u16 vlan_id)
5499 {
5500         int if_type;
5501
5502         rcu_read_lock();
5503         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5504                 struct cnic_ulp_ops *ulp_ops;
5505                 void *ctx;
5506
5507                 ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
5508                 if (!ulp_ops || !ulp_ops->indicate_netevent)
5509                         continue;
5510
5511                 ctx = cp->ulp_handle[if_type];
5512
5513                 ulp_ops->indicate_netevent(ctx, event, vlan_id);
5514         }
5515         rcu_read_unlock();
5516 }
5517
5518 /**
5519  * netdev event handler
5520  */
5521 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5522                                                          void *ptr)
5523 {
5524         struct net_device *netdev = ptr;
5525         struct cnic_dev *dev;
5526         int new_dev = 0;
5527
5528         dev = cnic_from_netdev(netdev);
5529
5530         if (!dev && (event == NETDEV_REGISTER || netif_running(netdev))) {
5531                 /* Check for the hot-plug device */
5532                 dev = is_cnic_dev(netdev);
5533                 if (dev) {
5534                         new_dev = 1;
5535                         cnic_hold(dev);
5536                 }
5537         }
5538         if (dev) {
5539                 struct cnic_local *cp = dev->cnic_priv;
5540
5541                 if (new_dev)
5542                         cnic_ulp_init(dev);
5543                 else if (event == NETDEV_UNREGISTER)
5544                         cnic_ulp_exit(dev);
5545
5546                 if (event == NETDEV_UP || (new_dev && netif_running(netdev))) {
5547                         if (cnic_register_netdev(dev) != 0) {
5548                                 cnic_put(dev);
5549                                 goto done;
5550                         }
5551                         if (!cnic_start_hw(dev))
5552                                 cnic_ulp_start(dev);
5553                 }
5554
5555                 cnic_rcv_netevent(cp, event, 0);
5556
5557                 if (event == NETDEV_GOING_DOWN) {
5558                         cnic_ulp_stop(dev);
5559                         cnic_stop_hw(dev);
5560                         cnic_unregister_netdev(dev);
5561                 } else if (event == NETDEV_UNREGISTER) {
5562                         write_lock(&cnic_dev_lock);
5563                         list_del_init(&dev->list);
5564                         write_unlock(&cnic_dev_lock);
5565
5566                         cnic_put(dev);
5567                         cnic_free_dev(dev);
5568                         goto done;
5569                 }
5570                 cnic_put(dev);
5571         } else {
5572                 struct net_device *realdev;
5573                 u16 vid;
5574
5575                 vid = cnic_get_vlan(netdev, &realdev);
5576                 if (realdev) {
5577                         dev = cnic_from_netdev(realdev);
5578                         if (dev) {
5579                                 vid |= VLAN_TAG_PRESENT;
5580                                 cnic_rcv_netevent(dev->cnic_priv, event, vid);
5581                                 cnic_put(dev);
5582                         }
5583                 }
5584         }
5585 done:
5586         return NOTIFY_DONE;
5587 }
5588
5589 static struct notifier_block cnic_netdev_notifier = {
5590         .notifier_call = cnic_netdev_event
5591 };
5592
5593 static void cnic_release(void)
5594 {
5595         struct cnic_dev *dev;
5596         struct cnic_uio_dev *udev;
5597
5598         while (!list_empty(&cnic_dev_list)) {
5599                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
5600                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5601                         cnic_ulp_stop(dev);
5602                         cnic_stop_hw(dev);
5603                 }
5604
5605                 cnic_ulp_exit(dev);
5606                 cnic_unregister_netdev(dev);
5607                 list_del_init(&dev->list);
5608                 cnic_free_dev(dev);
5609         }
5610         while (!list_empty(&cnic_udev_list)) {
5611                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5612                                   list);
5613                 cnic_free_uio(udev);
5614         }
5615 }
5616
5617 static int __init cnic_init(void)
5618 {
5619         int rc = 0;
5620
5621         pr_info("%s", version);
5622
5623         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5624         if (rc) {
5625                 cnic_release();
5626                 return rc;
5627         }
5628
5629         cnic_wq = create_singlethread_workqueue("cnic_wq");
5630         if (!cnic_wq) {
5631                 cnic_release();
5632                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5633                 return -ENOMEM;
5634         }
5635
5636         return 0;
5637 }
5638
5639 static void __exit cnic_exit(void)
5640 {
5641         unregister_netdevice_notifier(&cnic_netdev_notifier);
5642         cnic_release();
5643         destroy_workqueue(cnic_wq);
5644 }
5645
5646 module_init(cnic_init);
5647 module_exit(cnic_exit);