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