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                 pr_warn("%s: Failed waiting for ref count to go to zero\n",
 538                         __func__);
 539         return 0;
 540
 541 out_unlock:
 542         mutex_unlock(&cnic_lock);
 543         return -EINVAL;
 544 }
 545
 546 static int cnic_start_hw(struct cnic_dev *);
 547 static void cnic_stop_hw(struct cnic_dev *);
 548
 549 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 550                                 void *ulp_ctx)
 551 {
 552         struct cnic_local *cp = dev->cnic_priv;
 553         struct cnic_ulp_ops *ulp_ops;
 554
 555         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 556                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 557                 return -EINVAL;
 558         }
 559         mutex_lock(&cnic_lock);
 560         if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
 561                 pr_err("%s: Driver with type %d has not been registered\n",
 562                        __func__, ulp_type);
 563                 mutex_unlock(&cnic_lock);
 564                 return -EAGAIN;
 565         }
 566         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 567                 pr_err("%s: Type %d has already been registered to this device\n",
 568                        __func__, ulp_type);
 569                 mutex_unlock(&cnic_lock);
 570                 return -EBUSY;
 571         }
 572
 573         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 574         cp->ulp_handle[ulp_type] = ulp_ctx;
 575         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 576         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 577         cnic_hold(dev);
 578
 579         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 580                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 581                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 582
 583         mutex_unlock(&cnic_lock);
 584
 585         cnic_ulp_ctl(dev, ulp_type, true);
 586
 587         return 0;
 588
 589 }
 590 EXPORT_SYMBOL(cnic_register_driver);
 591
 592 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 593 {
 594         struct cnic_local *cp = dev->cnic_priv;
 595         int i = 0;
 596
 597         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 598                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 599                 return -EINVAL;
 600         }
 601         mutex_lock(&cnic_lock);
 602         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 603                 RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
 604                 cnic_put(dev);
 605         } else {
 606                 pr_err("%s: device not registered to this ulp type %d\n",
 607                        __func__, ulp_type);
 608                 mutex_unlock(&cnic_lock);
 609                 return -EINVAL;
 610         }
 611         mutex_unlock(&cnic_lock);
 612
 613         if (ulp_type == CNIC_ULP_ISCSI)
 614                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 615
 616         synchronize_rcu();
 617
 618         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 619                i < 20) {
 620                 msleep(100);
 621                 i++;
 622         }
 623         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 624                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 625
 626         cnic_ulp_ctl(dev, ulp_type, false);
 627
 628         return 0;
 629 }
 630 EXPORT_SYMBOL(cnic_unregister_driver);
 631
 632 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
 633                             u32 next)
 634 {
 635         id_tbl->start = start_id;
 636         id_tbl->max = size;
 637         id_tbl->next = next;
 638         spin_lock_init(&id_tbl->lock);
 639         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 640         if (!id_tbl->table)
 641                 return -ENOMEM;
 642
 643         return 0;
 644 }
 645
 646 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 647 {
 648         kfree(id_tbl->table);
 649         id_tbl->table = NULL;
 650 }
 651
 652 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 653 {
 654         int ret = -1;
 655
 656         id -= id_tbl->start;
 657         if (id >= id_tbl->max)
 658                 return ret;
 659
 660         spin_lock(&id_tbl->lock);
 661         if (!test_bit(id, id_tbl->table)) {
 662                 set_bit(id, id_tbl->table);
 663                 ret = 0;
 664         }
 665         spin_unlock(&id_tbl->lock);
 666         return ret;
 667 }
 668
 669 /* Returns -1 if not successful */
 670 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 671 {
 672         u32 id;
 673
 674         spin_lock(&id_tbl->lock);
 675         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 676         if (id >= id_tbl->max) {
 677                 id = -1;
 678                 if (id_tbl->next != 0) {
 679                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 680                         if (id >= id_tbl->next)
 681                                 id = -1;
 682                 }
 683         }
 684
 685         if (id < id_tbl->max) {
 686                 set_bit(id, id_tbl->table);
 687                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 688                 id += id_tbl->start;
 689         }
 690
 691         spin_unlock(&id_tbl->lock);
 692
 693         return id;
 694 }
 695
 696 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 697 {
 698         if (id == -1)
 699                 return;
 700
 701         id -= id_tbl->start;
 702         if (id >= id_tbl->max)
 703                 return;
 704
 705         clear_bit(id, id_tbl->table);
 706 }
 707
 708 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 709 {
 710         int i;
 711
 712         if (!dma->pg_arr)
 713                 return;
 714
 715         for (i = 0; i < dma->num_pages; i++) {
 716                 if (dma->pg_arr[i]) {
 717                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
 718                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 719                         dma->pg_arr[i] = NULL;
 720                 }
 721         }
 722         if (dma->pgtbl) {
 723                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 724                                   dma->pgtbl, dma->pgtbl_map);
 725                 dma->pgtbl = NULL;
 726         }
 727         kfree(dma->pg_arr);
 728         dma->pg_arr = NULL;
 729         dma->num_pages = 0;
 730 }
 731
 732 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 733 {
 734         int i;
 735         __le32 *page_table = (__le32 *) dma->pgtbl;
 736
 737         for (i = 0; i < dma->num_pages; i++) {
 738                 /* Each entry needs to be in big endian format. */
 739                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 740                 page_table++;
 741                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 742                 page_table++;
 743         }
 744 }
 745
 746 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 747 {
 748         int i;
 749         __le32 *page_table = (__le32 *) dma->pgtbl;
 750
 751         for (i = 0; i < dma->num_pages; i++) {
 752                 /* Each entry needs to be in little endian format. */
 753                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 754                 page_table++;
 755                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 756                 page_table++;
 757         }
 758 }
 759
 760 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 761                           int pages, int use_pg_tbl)
 762 {
 763         int i, size;
 764         struct cnic_local *cp = dev->cnic_priv;
 765
 766         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 767         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 768         if (dma->pg_arr == NULL)
 769                 return -ENOMEM;
 770
 771         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 772         dma->num_pages = pages;
 773
 774         for (i = 0; i < pages; i++) {
 775                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 776                                                     BCM_PAGE_SIZE,
 777                                                     &dma->pg_map_arr[i],
 778                                                     GFP_ATOMIC);
 779                 if (dma->pg_arr[i] == NULL)
 780                         goto error;
 781         }
 782         if (!use_pg_tbl)
 783                 return 0;
 784
 785         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 786                           ~(BCM_PAGE_SIZE - 1);
 787         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 788                                         &dma->pgtbl_map, GFP_ATOMIC);
 789         if (dma->pgtbl == NULL)
 790                 goto error;
 791
 792         cp->setup_pgtbl(dev, dma);
 793
 794         return 0;
 795
 796 error:
 797         cnic_free_dma(dev, dma);
 798         return -ENOMEM;
 799 }
 800
 801 static void cnic_free_context(struct cnic_dev *dev)
 802 {
 803         struct cnic_local *cp = dev->cnic_priv;
 804         int i;
 805
 806         for (i = 0; i < cp->ctx_blks; i++) {
 807                 if (cp->ctx_arr[i].ctx) {
 808                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 809                                           cp->ctx_arr[i].ctx,
 810                                           cp->ctx_arr[i].mapping);
 811                         cp->ctx_arr[i].ctx = NULL;
 812                 }
 813         }
 814 }
 815
 816 static void __cnic_free_uio(struct cnic_uio_dev *udev)
 817 {
 818         uio_unregister_device(&udev->cnic_uinfo);
 819
 820         if (udev->l2_buf) {
 821                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 822                                   udev->l2_buf, udev->l2_buf_map);
 823                 udev->l2_buf = NULL;
 824         }
 825
 826         if (udev->l2_ring) {
 827                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 828                                   udev->l2_ring, udev->l2_ring_map);
 829                 udev->l2_ring = NULL;
 830         }
 831
 832         pci_dev_put(udev->pdev);
 833         kfree(udev);
 834 }
 835
 836 static void cnic_free_uio(struct cnic_uio_dev *udev)
 837 {
 838         if (!udev)
 839                 return;
 840
 841         write_lock(&cnic_dev_lock);
 842         list_del_init(&udev->list);
 843         write_unlock(&cnic_dev_lock);
 844         __cnic_free_uio(udev);
 845 }
 846
 847 static void cnic_free_resc(struct cnic_dev *dev)
 848 {
 849         struct cnic_local *cp = dev->cnic_priv;
 850         struct cnic_uio_dev *udev = cp->udev;
 851
 852         if (udev) {
 853                 udev->dev = NULL;
 854                 cp->udev = NULL;
 855         }
 856
 857         cnic_free_context(dev);
 858         kfree(cp->ctx_arr);
 859         cp->ctx_arr = NULL;
 860         cp->ctx_blks = 0;
 861
 862         cnic_free_dma(dev, &cp->gbl_buf_info);
 863         cnic_free_dma(dev, &cp->kwq_info);
 864         cnic_free_dma(dev, &cp->kwq_16_data_info);
 865         cnic_free_dma(dev, &cp->kcq2.dma);
 866         cnic_free_dma(dev, &cp->kcq1.dma);
 867         kfree(cp->iscsi_tbl);
 868         cp->iscsi_tbl = NULL;
 869         kfree(cp->ctx_tbl);
 870         cp->ctx_tbl = NULL;
 871
 872         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
 873         cnic_free_id_tbl(&cp->cid_tbl);
 874 }
 875
 876 static int cnic_alloc_context(struct cnic_dev *dev)
 877 {
 878         struct cnic_local *cp = dev->cnic_priv;
 879
 880         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 881                 int i, k, arr_size;
 882
 883                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 884                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 885                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 886                            sizeof(struct cnic_ctx);
 887                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 888                 if (cp->ctx_arr == NULL)
 889                         return -ENOMEM;
 890
 891                 k = 0;
 892                 for (i = 0; i < 2; i++) {
 893                         u32 j, reg, off, lo, hi;
 894
 895                         if (i == 0)
 896                                 off = BNX2_PG_CTX_MAP;
 897                         else
 898                                 off = BNX2_ISCSI_CTX_MAP;
 899
 900                         reg = cnic_reg_rd_ind(dev, off);
 901                         lo = reg >> 16;
 902                         hi = reg & 0xffff;
 903                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 904                                 cp->ctx_arr[k].cid = j;
 905                 }
 906
 907                 cp->ctx_blks = k;
 908                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 909                         cp->ctx_blks = 0;
 910                         return -ENOMEM;
 911                 }
 912
 913                 for (i = 0; i < cp->ctx_blks; i++) {
 914                         cp->ctx_arr[i].ctx =
 915                                 dma_alloc_coherent(&dev->pcidev->dev,
 916                                                    BCM_PAGE_SIZE,
 917                                                    &cp->ctx_arr[i].mapping,
 918                                                    GFP_KERNEL);
 919                         if (cp->ctx_arr[i].ctx == NULL)
 920                                 return -ENOMEM;
 921                 }
 922         }
 923         return 0;
 924 }
 925
 926 static u16 cnic_bnx2_next_idx(u16 idx)
 927 {
 928         return idx + 1;
 929 }
 930
 931 static u16 cnic_bnx2_hw_idx(u16 idx)
 932 {
 933         return idx;
 934 }
 935
 936 static u16 cnic_bnx2x_next_idx(u16 idx)
 937 {
 938         idx++;
 939         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 940                 idx++;
 941
 942         return idx;
 943 }
 944
 945 static u16 cnic_bnx2x_hw_idx(u16 idx)
 946 {
 947         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 948                 idx++;
 949         return idx;
 950 }
 951
 952 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
 953                           bool use_pg_tbl)
 954 {
 955         int err, i, use_page_tbl = 0;
 956         struct kcqe **kcq;
 957
 958         if (use_pg_tbl)
 959                 use_page_tbl = 1;
 960
 961         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
 962         if (err)
 963                 return err;
 964
 965         kcq = (struct kcqe **) info->dma.pg_arr;
 966         info->kcq = kcq;
 967
 968         info->next_idx = cnic_bnx2_next_idx;
 969         info->hw_idx = cnic_bnx2_hw_idx;
 970         if (use_pg_tbl)
 971                 return 0;
 972
 973         info->next_idx = cnic_bnx2x_next_idx;
 974         info->hw_idx = cnic_bnx2x_hw_idx;
 975
 976         for (i = 0; i < KCQ_PAGE_CNT; i++) {
 977                 struct bnx2x_bd_chain_next *next =
 978                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
 979                 int j = i + 1;
 980
 981                 if (j >= KCQ_PAGE_CNT)
 982                         j = 0;
 983                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
 984                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
 985         }
 986         return 0;
 987 }
 988
 989 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
 990 {
 991         struct cnic_local *cp = dev->cnic_priv;
 992         struct cnic_uio_dev *udev;
 993
 994         read_lock(&cnic_dev_lock);
 995         list_for_each_entry(udev, &cnic_udev_list, list) {
 996                 if (udev->pdev == dev->pcidev) {
 997                         udev->dev = dev;
 998                         cp->udev = udev;
 999                         read_unlock(&cnic_dev_lock);
1000                         return 0;
1001                 }
1002         }
1003         read_unlock(&cnic_dev_lock);
1004
1005         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
1006         if (!udev)
1007                 return -ENOMEM;
1008
1009         udev->uio_dev = -1;
1010
1011         udev->dev = dev;
1012         udev->pdev = dev->pcidev;
1013         udev->l2_ring_size = pages * BCM_PAGE_SIZE;
1014         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
1015                                            &udev->l2_ring_map,
1016                                            GFP_KERNEL | __GFP_COMP);
1017         if (!udev->l2_ring)
1018                 goto err_udev;
1019
1020         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
1021         udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
1022         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1023                                           &udev->l2_buf_map,
1024                                           GFP_KERNEL | __GFP_COMP);
1025         if (!udev->l2_buf)
1026                 goto err_dma;
1027
1028         write_lock(&cnic_dev_lock);
1029         list_add(&udev->list, &cnic_udev_list);
1030         write_unlock(&cnic_dev_lock);
1031
1032         pci_dev_get(udev->pdev);
1033
1034         cp->udev = udev;
1035
1036         return 0;
1037  err_dma:
1038         dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
1039                           udev->l2_ring, udev->l2_ring_map);
1040  err_udev:
1041         kfree(udev);
1042         return -ENOMEM;
1043 }
1044
1045 static int cnic_init_uio(struct cnic_dev *dev)
1046 {
1047         struct cnic_local *cp = dev->cnic_priv;
1048         struct cnic_uio_dev *udev = cp->udev;
1049         struct uio_info *uinfo;
1050         int ret = 0;
1051
1052         if (!udev)
1053                 return -ENOMEM;
1054
1055         uinfo = &udev->cnic_uinfo;
1056
1057         uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
1058         uinfo->mem[0].internal_addr = dev->regview;
1059         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1060
1061         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1062                 uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
1063                                                      TX_MAX_TSS_RINGS + 1);
1064                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1065                                         PAGE_MASK;
1066                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1067                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1068                 else
1069                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1070
1071                 uinfo->name = "bnx2_cnic";
1072         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1073                 uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);
1074
1075                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1076                         PAGE_MASK;
1077                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1078
1079                 uinfo->name = "bnx2x_cnic";
1080         }
1081
1082         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1083
1084         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1085         uinfo->mem[2].size = udev->l2_ring_size;
1086         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1087
1088         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1089         uinfo->mem[3].size = udev->l2_buf_size;
1090         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1091
1092         uinfo->version = CNIC_MODULE_VERSION;
1093         uinfo->irq = UIO_IRQ_CUSTOM;
1094
1095         uinfo->open = cnic_uio_open;
1096         uinfo->release = cnic_uio_close;
1097
1098         if (udev->uio_dev == -1) {
1099                 if (!uinfo->priv) {
1100                         uinfo->priv = udev;
1101
1102                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1103                 }
1104         } else {
1105                 cnic_init_rings(dev);
1106         }
1107
1108         return ret;
1109 }
1110
1111 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1112 {
1113         struct cnic_local *cp = dev->cnic_priv;
1114         int ret;
1115
1116         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1117         if (ret)
1118                 goto error;
1119         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1120
1121         ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1122         if (ret)
1123                 goto error;
1124
1125         ret = cnic_alloc_context(dev);
1126         if (ret)
1127                 goto error;
1128
1129         ret = cnic_alloc_uio_rings(dev, 2);
1130         if (ret)
1131                 goto error;
1132
1133         ret = cnic_init_uio(dev);
1134         if (ret)
1135                 goto error;
1136
1137         return 0;
1138
1139 error:
1140         cnic_free_resc(dev);
1141         return ret;
1142 }
1143
1144 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1145 {
1146         struct cnic_local *cp = dev->cnic_priv;
1147         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1148         int total_mem, blks, i;
1149
1150         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1151         blks = total_mem / ctx_blk_size;
1152         if (total_mem % ctx_blk_size)
1153                 blks++;
1154
1155         if (blks > cp->ethdev->ctx_tbl_len)
1156                 return -ENOMEM;
1157
1158         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1159         if (cp->ctx_arr == NULL)
1160                 return -ENOMEM;
1161
1162         cp->ctx_blks = blks;
1163         cp->ctx_blk_size = ctx_blk_size;
1164         if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1165                 cp->ctx_align = 0;
1166         else
1167                 cp->ctx_align = ctx_blk_size;
1168
1169         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1170
1171         for (i = 0; i < blks; i++) {
1172                 cp->ctx_arr[i].ctx =
1173                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1174                                            &cp->ctx_arr[i].mapping,
1175                                            GFP_KERNEL);
1176                 if (cp->ctx_arr[i].ctx == NULL)
1177                         return -ENOMEM;
1178
1179                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1180                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1181                                 cnic_free_context(dev);
1182                                 cp->ctx_blk_size += cp->ctx_align;
1183                                 i = -1;
1184                                 continue;
1185                         }
1186                 }
1187         }
1188         return 0;
1189 }
1190
1191 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1192 {
1193         struct cnic_local *cp = dev->cnic_priv;
1194         struct cnic_eth_dev *ethdev = cp->ethdev;
1195         u32 start_cid = ethdev->starting_cid;
1196         int i, j, n, ret, pages;
1197         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1198
1199         cp->iro_arr = ethdev->iro_arr;
1200
1201         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1202         cp->iscsi_start_cid = start_cid;
1203         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1204
1205         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1206                 cp->max_cid_space += dev->max_fcoe_conn;
1207                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1208                 if (!cp->fcoe_init_cid)
1209                         cp->fcoe_init_cid = 0x10;
1210         }
1211
1212         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1213                                 GFP_KERNEL);
1214         if (!cp->iscsi_tbl)
1215                 goto error;
1216
1217         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1218                                 cp->max_cid_space, GFP_KERNEL);
1219         if (!cp->ctx_tbl)
1220                 goto error;
1221
1222         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1223                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1224                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1225         }
1226
1227         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1228                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1229
1230         pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1231                 PAGE_SIZE;
1232
1233         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1234         if (ret)
1235                 return -ENOMEM;
1236
1237         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1238         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1239                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1240
1241                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1242                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1243                                                    off;
1244
1245                 if ((i % n) == (n - 1))
1246                         j++;
1247         }
1248
1249         ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1250         if (ret)
1251                 goto error;
1252
1253         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1254                 ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1255                 if (ret)
1256                         goto error;
1257         }
1258
1259         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1260         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1261         if (ret)
1262                 goto error;
1263
1264         ret = cnic_alloc_bnx2x_context(dev);
1265         if (ret)
1266                 goto error;
1267
1268         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1269
1270         cp->l2_rx_ring_size = 15;
1271
1272         ret = cnic_alloc_uio_rings(dev, 4);
1273         if (ret)
1274                 goto error;
1275
1276         ret = cnic_init_uio(dev);
1277         if (ret)
1278                 goto error;
1279
1280         return 0;
1281
1282 error:
1283         cnic_free_resc(dev);
1284         return -ENOMEM;
1285 }
1286
1287 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1288 {
1289         return cp->max_kwq_idx -
1290                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1291 }
1292
1293 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1294                                   u32 num_wqes)
1295 {
1296         struct cnic_local *cp = dev->cnic_priv;
1297         struct kwqe *prod_qe;
1298         u16 prod, sw_prod, i;
1299
1300         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1301                 return -EAGAIN;         /* bnx2 is down */
1302
1303         spin_lock_bh(&cp->cnic_ulp_lock);
1304         if (num_wqes > cnic_kwq_avail(cp) &&
1305             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1306                 spin_unlock_bh(&cp->cnic_ulp_lock);
1307                 return -EAGAIN;
1308         }
1309
1310         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1311
1312         prod = cp->kwq_prod_idx;
1313         sw_prod = prod & MAX_KWQ_IDX;
1314         for (i = 0; i < num_wqes; i++) {
1315                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1316                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1317                 prod++;
1318                 sw_prod = prod & MAX_KWQ_IDX;
1319         }
1320         cp->kwq_prod_idx = prod;
1321
1322         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1323
1324         spin_unlock_bh(&cp->cnic_ulp_lock);
1325         return 0;
1326 }
1327
1328 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1329                                    union l5cm_specific_data *l5_data)
1330 {
1331         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1332         dma_addr_t map;
1333
1334         map = ctx->kwqe_data_mapping;
1335         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1336         l5_data->phy_address.hi = (u64) map >> 32;
1337         return ctx->kwqe_data;
1338 }
1339
1340 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1341                                 u32 type, union l5cm_specific_data *l5_data)
1342 {
1343         struct cnic_local *cp = dev->cnic_priv;
1344         struct l5cm_spe kwqe;
1345         struct kwqe_16 *kwq[1];
1346         u16 type_16;
1347         int ret;
1348
1349         kwqe.hdr.conn_and_cmd_data =
1350                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1351                              BNX2X_HW_CID(cp, cid)));
1352
1353         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1354         type_16 |= (cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1355                    SPE_HDR_FUNCTION_ID;
1356
1357         kwqe.hdr.type = cpu_to_le16(type_16);
1358         kwqe.hdr.reserved1 = 0;
1359         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1360         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1361
1362         kwq[0] = (struct kwqe_16 *) &kwqe;
1363
1364         spin_lock_bh(&cp->cnic_ulp_lock);
1365         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1366         spin_unlock_bh(&cp->cnic_ulp_lock);
1367
1368         if (ret == 1)
1369                 return 0;
1370
1371         return ret;
1372 }
1373
1374 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1375                                    struct kcqe *cqes[], u32 num_cqes)
1376 {
1377         struct cnic_local *cp = dev->cnic_priv;
1378         struct cnic_ulp_ops *ulp_ops;
1379
1380         rcu_read_lock();
1381         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1382         if (likely(ulp_ops)) {
1383                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1384                                           cqes, num_cqes);
1385         }
1386         rcu_read_unlock();
1387 }
1388
1389 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1390 {
1391         struct cnic_local *cp = dev->cnic_priv;
1392         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1393         int hq_bds, pages;
1394         u32 pfid = cp->pfid;
1395
1396         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1397         cp->num_ccells = req1->num_ccells_per_conn;
1398         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1399                               cp->num_iscsi_tasks;
1400         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1401                         BNX2X_ISCSI_R2TQE_SIZE;
1402         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1403         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1404         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1405         cp->num_cqs = req1->num_cqs;
1406
1407         if (!dev->max_iscsi_conn)
1408                 return 0;
1409
1410         /* init Tstorm RAM */
1411         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1412                   req1->rq_num_wqes);
1413         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1414                   PAGE_SIZE);
1415         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1416                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1417         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1418                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1419                   req1->num_tasks_per_conn);
1420
1421         /* init Ustorm RAM */
1422         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1423                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1424                   req1->rq_buffer_size);
1425         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1426                   PAGE_SIZE);
1427         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1428                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1429         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1430                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1431                   req1->num_tasks_per_conn);
1432         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1433                   req1->rq_num_wqes);
1434         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1435                   req1->cq_num_wqes);
1436         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1437                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1438
1439         /* init Xstorm RAM */
1440         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1441                   PAGE_SIZE);
1442         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1443                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1444         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1445                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1446                   req1->num_tasks_per_conn);
1447         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1448                   hq_bds);
1449         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1450                   req1->num_tasks_per_conn);
1451         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1452                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1453
1454         /* init Cstorm RAM */
1455         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1456                   PAGE_SIZE);
1457         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1458                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1459         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1460                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1461                   req1->num_tasks_per_conn);
1462         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1463                   req1->cq_num_wqes);
1464         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1465                   hq_bds);
1466
1467         return 0;
1468 }
1469
1470 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1471 {
1472         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1473         struct cnic_local *cp = dev->cnic_priv;
1474         u32 pfid = cp->pfid;
1475         struct iscsi_kcqe kcqe;
1476         struct kcqe *cqes[1];
1477
1478         memset(&kcqe, 0, sizeof(kcqe));
1479         if (!dev->max_iscsi_conn) {
1480                 kcqe.completion_status =
1481                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1482                 goto done;
1483         }
1484
1485         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1486                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1487         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1488                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1489                 req2->error_bit_map[1]);
1490
1491         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1492                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1493         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1494                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1495         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1496                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1497                 req2->error_bit_map[1]);
1498
1499         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1500                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1501
1502         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1503
1504 done:
1505         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1506         cqes[0] = (struct kcqe *) &kcqe;
1507         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1508
1509         return 0;
1510 }
1511
1512 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1513 {
1514         struct cnic_local *cp = dev->cnic_priv;
1515         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1516
1517         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1518                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1519
1520                 cnic_free_dma(dev, &iscsi->hq_info);
1521                 cnic_free_dma(dev, &iscsi->r2tq_info);
1522                 cnic_free_dma(dev, &iscsi->task_array_info);
1523                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1524         } else {
1525                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1526         }
1527
1528         ctx->cid = 0;
1529 }
1530
1531 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1532 {
1533         u32 cid;
1534         int ret, pages;
1535         struct cnic_local *cp = dev->cnic_priv;
1536         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1537         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1538
1539         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1540                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1541                 if (cid == -1) {
1542                         ret = -ENOMEM;
1543                         goto error;
1544                 }
1545                 ctx->cid = cid;
1546                 return 0;
1547         }
1548
1549         cid = cnic_alloc_new_id(&cp->cid_tbl);
1550         if (cid == -1) {
1551                 ret = -ENOMEM;
1552                 goto error;
1553         }
1554
1555         ctx->cid = cid;
1556         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1557
1558         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1559         if (ret)
1560                 goto error;
1561
1562         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1563         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1564         if (ret)
1565                 goto error;
1566
1567         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1568         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1569         if (ret)
1570                 goto error;
1571
1572         return 0;
1573
1574 error:
1575         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1576         return ret;
1577 }
1578
1579 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1580                                 struct regpair *ctx_addr)
1581 {
1582         struct cnic_local *cp = dev->cnic_priv;
1583         struct cnic_eth_dev *ethdev = cp->ethdev;
1584         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1585         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1586         unsigned long align_off = 0;
1587         dma_addr_t ctx_map;
1588         void *ctx;
1589
1590         if (cp->ctx_align) {
1591                 unsigned long mask = cp->ctx_align - 1;
1592
1593                 if (cp->ctx_arr[blk].mapping & mask)
1594                         align_off = cp->ctx_align -
1595                                     (cp->ctx_arr[blk].mapping & mask);
1596         }
1597         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1598                 (off * BNX2X_CONTEXT_MEM_SIZE);
1599         ctx = cp->ctx_arr[blk].ctx + align_off +
1600               (off * BNX2X_CONTEXT_MEM_SIZE);
1601         if (init)
1602                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1603
1604         ctx_addr->lo = ctx_map & 0xffffffff;
1605         ctx_addr->hi = (u64) ctx_map >> 32;
1606         return ctx;
1607 }
1608
1609 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1610                                 u32 num)
1611 {
1612         struct cnic_local *cp = dev->cnic_priv;
1613         struct iscsi_kwqe_conn_offload1 *req1 =
1614                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1615         struct iscsi_kwqe_conn_offload2 *req2 =
1616                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1617         struct iscsi_kwqe_conn_offload3 *req3;
1618         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1619         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1620         u32 cid = ctx->cid;
1621         u32 hw_cid = BNX2X_HW_CID(cp, cid);
1622         struct iscsi_context *ictx;
1623         struct regpair context_addr;
1624         int i, j, n = 2, n_max;
1625         u8 port = CNIC_PORT(cp);
1626
1627         ctx->ctx_flags = 0;
1628         if (!req2->num_additional_wqes)
1629                 return -EINVAL;
1630
1631         n_max = req2->num_additional_wqes + 2;
1632
1633         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1634         if (ictx == NULL)
1635                 return -ENOMEM;
1636
1637         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1638
1639         ictx->xstorm_ag_context.hq_prod = 1;
1640
1641         ictx->xstorm_st_context.iscsi.first_burst_length =
1642                 ISCSI_DEF_FIRST_BURST_LEN;
1643         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1644                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1645         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1646                 req1->sq_page_table_addr_lo;
1647         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1648                 req1->sq_page_table_addr_hi;
1649         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1650         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1651         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1652                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1653         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1654                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1655         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1656                 iscsi->hq_info.pgtbl[0];
1657         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1658                 iscsi->hq_info.pgtbl[1];
1659         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1660                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1661         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1662                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1663         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1664                 iscsi->r2tq_info.pgtbl[0];
1665         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1666                 iscsi->r2tq_info.pgtbl[1];
1667         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1668                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1669         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1670                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1671         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1672                 BNX2X_ISCSI_PBL_NOT_CACHED;
1673         ictx->xstorm_st_context.iscsi.flags.flags |=
1674                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1675         ictx->xstorm_st_context.iscsi.flags.flags |=
1676                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1677         ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1678                 ETH_P_8021Q;
1679         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
1680                 cp->port_mode == CHIP_2_PORT_MODE) {
1681
1682                 port = 0;
1683         }
1684         ictx->xstorm_st_context.common.flags =
1685                 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1686         ictx->xstorm_st_context.common.flags =
1687                 port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1688
1689         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1690         /* TSTORM requires the base address of RQ DB & not PTE */
1691         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1692                 req2->rq_page_table_addr_lo & PAGE_MASK;
1693         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1694                 req2->rq_page_table_addr_hi;
1695         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1696         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1697         ictx->tstorm_st_context.tcp.flags2 |=
1698                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1699         ictx->tstorm_st_context.tcp.ooo_support_mode =
1700                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1701
1702         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1703
1704         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1705                 req2->rq_page_table_addr_lo;
1706         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1707                 req2->rq_page_table_addr_hi;
1708         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1709         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1710         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1711                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1712         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1713                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1714         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1715                 iscsi->r2tq_info.pgtbl[0];
1716         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1717                 iscsi->r2tq_info.pgtbl[1];
1718         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1719                 req1->cq_page_table_addr_lo;
1720         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1721                 req1->cq_page_table_addr_hi;
1722         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1723         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1724         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1725         ictx->ustorm_st_context.task_pbe_cache_index =
1726                 BNX2X_ISCSI_PBL_NOT_CACHED;
1727         ictx->ustorm_st_context.task_pdu_cache_index =
1728                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1729
1730         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1731                 if (j == 3) {
1732                         if (n >= n_max)
1733                                 break;
1734                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1735                         j = 0;
1736                 }
1737                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1738                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1739                         req3->qp_first_pte[j].hi;
1740                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1741                         req3->qp_first_pte[j].lo;
1742         }
1743
1744         ictx->ustorm_st_context.task_pbl_base.lo =
1745                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1746         ictx->ustorm_st_context.task_pbl_base.hi =
1747                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1748         ictx->ustorm_st_context.tce_phy_addr.lo =
1749                 iscsi->task_array_info.pgtbl[0];
1750         ictx->ustorm_st_context.tce_phy_addr.hi =
1751                 iscsi->task_array_info.pgtbl[1];
1752         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1753         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1754         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1755         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1756                 ISCSI_DEF_MAX_BURST_LEN;
1757         ictx->ustorm_st_context.negotiated_rx |=
1758                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1759                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1760
1761         ictx->cstorm_st_context.hq_pbl_base.lo =
1762                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1763         ictx->cstorm_st_context.hq_pbl_base.hi =
1764                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1765         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1766         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1767         ictx->cstorm_st_context.task_pbl_base.lo =
1768                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1769         ictx->cstorm_st_context.task_pbl_base.hi =
1770                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1771         /* CSTORM and USTORM initialization is different, CSTORM requires
1772          * CQ DB base & not PTE addr */
1773         ictx->cstorm_st_context.cq_db_base.lo =
1774                 req1->cq_page_table_addr_lo & PAGE_MASK;
1775         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1776         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1777         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1778         for (i = 0; i < cp->num_cqs; i++) {
1779                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1780                         ISCSI_INITIAL_SN;
1781                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1782                         ISCSI_INITIAL_SN;
1783         }
1784
1785         ictx->xstorm_ag_context.cdu_reserved =
1786                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1787                                        ISCSI_CONNECTION_TYPE);
1788         ictx->ustorm_ag_context.cdu_usage =
1789                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1790                                        ISCSI_CONNECTION_TYPE);
1791         return 0;
1792
1793 }
1794
1795 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1796                                    u32 num, int *work)
1797 {
1798         struct iscsi_kwqe_conn_offload1 *req1;
1799         struct iscsi_kwqe_conn_offload2 *req2;
1800         struct cnic_local *cp = dev->cnic_priv;
1801         struct cnic_context *ctx;
1802         struct iscsi_kcqe kcqe;
1803         struct kcqe *cqes[1];
1804         u32 l5_cid;
1805         int ret = 0;
1806
1807         if (num < 2) {
1808                 *work = num;
1809                 return -EINVAL;
1810         }
1811
1812         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1813         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1814         if ((num - 2) < req2->num_additional_wqes) {
1815                 *work = num;
1816                 return -EINVAL;
1817         }
1818         *work = 2 + req2->num_additional_wqes;
1819
1820         l5_cid = req1->iscsi_conn_id;
1821         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1822                 return -EINVAL;
1823
1824         memset(&kcqe, 0, sizeof(kcqe));
1825         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1826         kcqe.iscsi_conn_id = l5_cid;
1827         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1828
1829         ctx = &cp->ctx_tbl[l5_cid];
1830         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1831                 kcqe.completion_status =
1832                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1833                 goto done;
1834         }
1835
1836         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1837                 atomic_dec(&cp->iscsi_conn);
1838                 goto done;
1839         }
1840         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1841         if (ret) {
1842                 atomic_dec(&cp->iscsi_conn);
1843                 ret = 0;
1844                 goto done;
1845         }
1846         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1847         if (ret < 0) {
1848                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1849                 atomic_dec(&cp->iscsi_conn);
1850                 goto done;
1851         }
1852
1853         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1854         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1855
1856 done:
1857         cqes[0] = (struct kcqe *) &kcqe;
1858         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1859         return 0;
1860 }
1861
1862
1863 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1864 {
1865         struct cnic_local *cp = dev->cnic_priv;
1866         struct iscsi_kwqe_conn_update *req =
1867                 (struct iscsi_kwqe_conn_update *) kwqe;
1868         void *data;
1869         union l5cm_specific_data l5_data;
1870         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1871         int ret;
1872
1873         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1874                 return -EINVAL;
1875
1876         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1877         if (!data)
1878                 return -ENOMEM;
1879
1880         memcpy(data, kwqe, sizeof(struct kwqe));
1881
1882         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1883                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1884         return ret;
1885 }
1886
1887 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1888 {
1889         struct cnic_local *cp = dev->cnic_priv;
1890         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1891         union l5cm_specific_data l5_data;
1892         int ret;
1893         u32 hw_cid;
1894
1895         init_waitqueue_head(&ctx->waitq);
1896         ctx->wait_cond = 0;
1897         memset(&l5_data, 0, sizeof(l5_data));
1898         hw_cid = BNX2X_HW_CID(cp, ctx->cid);
1899
1900         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1901                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1902
1903         if (ret == 0) {
1904                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1905                 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1906                         return -EBUSY;
1907         }
1908
1909         return 0;
1910 }
1911
1912 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1913 {
1914         struct cnic_local *cp = dev->cnic_priv;
1915         struct iscsi_kwqe_conn_destroy *req =
1916                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1917         u32 l5_cid = req->reserved0;
1918         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1919         int ret = 0;
1920         struct iscsi_kcqe kcqe;
1921         struct kcqe *cqes[1];
1922
1923         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1924                 goto skip_cfc_delete;
1925
1926         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
1927                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
1928
1929                 if (delta > (2 * HZ))
1930                         delta = 0;
1931
1932                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
1933                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
1934                 goto destroy_reply;
1935         }
1936
1937         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
1938
1939 skip_cfc_delete:
1940         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1941
1942         if (!ret) {
1943                 atomic_dec(&cp->iscsi_conn);
1944                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1945         }
1946
1947 destroy_reply:
1948         memset(&kcqe, 0, sizeof(kcqe));
1949         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1950         kcqe.iscsi_conn_id = l5_cid;
1951         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1952         kcqe.iscsi_conn_context_id = req->context_id;
1953
1954         cqes[0] = (struct kcqe *) &kcqe;
1955         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1956
1957         return 0;
1958 }
1959
1960 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1961                                       struct l4_kwq_connect_req1 *kwqe1,
1962                                       struct l4_kwq_connect_req3 *kwqe3,
1963                                       struct l5cm_active_conn_buffer *conn_buf)
1964 {
1965         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1966         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1967                 &conn_buf->xstorm_conn_buffer;
1968         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1969                 &conn_buf->tstorm_conn_buffer;
1970         struct regpair context_addr;
1971         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1972         struct in6_addr src_ip, dst_ip;
1973         int i;
1974         u32 *addrp;
1975
1976         addrp = (u32 *) &conn_addr->local_ip_addr;
1977         for (i = 0; i < 4; i++, addrp++)
1978                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1979
1980         addrp = (u32 *) &conn_addr->remote_ip_addr;
1981         for (i = 0; i < 4; i++, addrp++)
1982                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1983
1984         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1985
1986         xstorm_buf->context_addr.hi = context_addr.hi;
1987         xstorm_buf->context_addr.lo = context_addr.lo;
1988         xstorm_buf->mss = 0xffff;
1989         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1990         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1991                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1992         xstorm_buf->pseudo_header_checksum =
1993                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1994
1995         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1996                 tstorm_buf->params |=
1997                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1998         if (kwqe3->ka_timeout) {
1999                 tstorm_buf->ka_enable = 1;
2000                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
2001                 tstorm_buf->ka_interval = kwqe3->ka_interval;
2002                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
2003         }
2004         tstorm_buf->max_rt_time = 0xffffffff;
2005 }
2006
2007 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2008 {
2009         struct cnic_local *cp = dev->cnic_priv;
2010         u32 pfid = cp->pfid;
2011         u8 *mac = dev->mac_addr;
2012
2013         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2014                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2015         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2016                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2017         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2018                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2019         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2020                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2021         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2022                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2023         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2024                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2025
2026         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2027                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2028         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2029                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2030                  mac[4]);
2031         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2032                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2033         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2034                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2035                  mac[2]);
2036         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2037                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2038         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2039                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2040                  mac[0]);
2041 }
2042
2043 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
2044 {
2045         struct cnic_local *cp = dev->cnic_priv;
2046         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
2047         u16 tstorm_flags = 0;
2048
2049         if (tcp_ts) {
2050                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
2051                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
2052         }
2053
2054         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2055                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
2056
2057         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
2058                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
2059 }
2060
2061 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2062                               u32 num, int *work)
2063 {
2064         struct cnic_local *cp = dev->cnic_priv;
2065         struct l4_kwq_connect_req1 *kwqe1 =
2066                 (struct l4_kwq_connect_req1 *) wqes[0];
2067         struct l4_kwq_connect_req3 *kwqe3;
2068         struct l5cm_active_conn_buffer *conn_buf;
2069         struct l5cm_conn_addr_params *conn_addr;
2070         union l5cm_specific_data l5_data;
2071         u32 l5_cid = kwqe1->pg_cid;
2072         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2073         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2074         int ret;
2075
2076         if (num < 2) {
2077                 *work = num;
2078                 return -EINVAL;
2079         }
2080
2081         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2082                 *work = 3;
2083         else
2084                 *work = 2;
2085
2086         if (num < *work) {
2087                 *work = num;
2088                 return -EINVAL;
2089         }
2090
2091         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2092                 netdev_err(dev->netdev, "conn_buf size too big\n");
2093                 return -ENOMEM;
2094         }
2095         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2096         if (!conn_buf)
2097                 return -ENOMEM;
2098
2099         memset(conn_buf, 0, sizeof(*conn_buf));
2100
2101         conn_addr = &conn_buf->conn_addr_buf;
2102         conn_addr->remote_addr_0 = csk->ha[0];
2103         conn_addr->remote_addr_1 = csk->ha[1];
2104         conn_addr->remote_addr_2 = csk->ha[2];
2105         conn_addr->remote_addr_3 = csk->ha[3];
2106         conn_addr->remote_addr_4 = csk->ha[4];
2107         conn_addr->remote_addr_5 = csk->ha[5];
2108
2109         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2110                 struct l4_kwq_connect_req2 *kwqe2 =
2111                         (struct l4_kwq_connect_req2 *) wqes[1];
2112
2113                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2114                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2115                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2116
2117                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2118                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2119                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2120                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2121         }
2122         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2123
2124         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2125         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2126         conn_addr->local_tcp_port = kwqe1->src_port;
2127         conn_addr->remote_tcp_port = kwqe1->dst_port;
2128
2129         conn_addr->pmtu = kwqe3->pmtu;
2130         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2131
2132         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2133                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2134
2135         cnic_bnx2x_set_tcp_timestamp(dev,
2136                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
2137
2138         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2139                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2140         if (!ret)
2141                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2142
2143         return ret;
2144 }
2145
2146 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2147 {
2148         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2149         union l5cm_specific_data l5_data;
2150         int ret;
2151
2152         memset(&l5_data, 0, sizeof(l5_data));
2153         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2154                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2155         return ret;
2156 }
2157
2158 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2159 {
2160         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2161         union l5cm_specific_data l5_data;
2162         int ret;
2163
2164         memset(&l5_data, 0, sizeof(l5_data));
2165         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2166                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2167         return ret;
2168 }
2169 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2170 {
2171         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2172         struct l4_kcq kcqe;
2173         struct kcqe *cqes[1];
2174
2175         memset(&kcqe, 0, sizeof(kcqe));
2176         kcqe.pg_host_opaque = req->host_opaque;
2177         kcqe.pg_cid = req->host_opaque;
2178         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2179         cqes[0] = (struct kcqe *) &kcqe;
2180         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2181         return 0;
2182 }
2183
2184 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2185 {
2186         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2187         struct l4_kcq kcqe;
2188         struct kcqe *cqes[1];
2189
2190         memset(&kcqe, 0, sizeof(kcqe));
2191         kcqe.pg_host_opaque = req->pg_host_opaque;
2192         kcqe.pg_cid = req->pg_cid;
2193         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2194         cqes[0] = (struct kcqe *) &kcqe;
2195         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2196         return 0;
2197 }
2198
2199 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2200 {
2201         struct fcoe_kwqe_stat *req;
2202         struct fcoe_stat_ramrod_params *fcoe_stat;
2203         union l5cm_specific_data l5_data;
2204         struct cnic_local *cp = dev->cnic_priv;
2205         int ret;
2206         u32 cid;
2207
2208         req = (struct fcoe_kwqe_stat *) kwqe;
2209         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2210
2211         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2212         if (!fcoe_stat)
2213                 return -ENOMEM;
2214
2215         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2216         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2217
2218         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2219                                   FCOE_CONNECTION_TYPE, &l5_data);
2220         return ret;
2221 }
2222
2223 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2224                                  u32 num, int *work)
2225 {
2226         int ret;
2227         struct cnic_local *cp = dev->cnic_priv;
2228         u32 cid;
2229         struct fcoe_init_ramrod_params *fcoe_init;
2230         struct fcoe_kwqe_init1 *req1;
2231         struct fcoe_kwqe_init2 *req2;
2232         struct fcoe_kwqe_init3 *req3;
2233         union l5cm_specific_data l5_data;
2234
2235         if (num < 3) {
2236                 *work = num;
2237                 return -EINVAL;
2238         }
2239         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2240         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2241         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2242         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2243                 *work = 1;
2244                 return -EINVAL;
2245         }
2246         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2247                 *work = 2;
2248                 return -EINVAL;
2249         }
2250
2251         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2252                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2253                 return -ENOMEM;
2254         }
2255         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2256         if (!fcoe_init)
2257                 return -ENOMEM;
2258
2259         memset(fcoe_init, 0, sizeof(*fcoe_init));
2260         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2261         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2262         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2263         fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2264         fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2265         fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2266
2267         fcoe_init->sb_num = cp->status_blk_num;
2268         fcoe_init->eq_prod = MAX_KCQ_IDX;
2269         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2270         cp->kcq2.sw_prod_idx = 0;
2271
2272         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2273         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2274                                   FCOE_CONNECTION_TYPE, &l5_data);
2275         *work = 3;
2276         return ret;
2277 }
2278
2279 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2280                                  u32 num, int *work)
2281 {
2282         int ret = 0;
2283         u32 cid = -1, l5_cid;
2284         struct cnic_local *cp = dev->cnic_priv;
2285         struct fcoe_kwqe_conn_offload1 *req1;
2286         struct fcoe_kwqe_conn_offload2 *req2;
2287         struct fcoe_kwqe_conn_offload3 *req3;
2288         struct fcoe_kwqe_conn_offload4 *req4;
2289         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2290         struct cnic_context *ctx;
2291         struct fcoe_context *fctx;
2292         struct regpair ctx_addr;
2293         union l5cm_specific_data l5_data;
2294         struct fcoe_kcqe kcqe;
2295         struct kcqe *cqes[1];
2296
2297         if (num < 4) {
2298                 *work = num;
2299                 return -EINVAL;
2300         }
2301         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2302         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2303         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2304         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2305
2306         *work = 4;
2307
2308         l5_cid = req1->fcoe_conn_id;
2309         if (l5_cid >= dev->max_fcoe_conn)
2310                 goto err_reply;
2311
2312         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2313
2314         ctx = &cp->ctx_tbl[l5_cid];
2315         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2316                 goto err_reply;
2317
2318         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2319         if (ret) {
2320                 ret = 0;
2321                 goto err_reply;
2322         }
2323         cid = ctx->cid;
2324
2325         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2326         if (fctx) {
2327                 u32 hw_cid = BNX2X_HW_CID(cp, cid);
2328                 u32 val;
2329
2330                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2331                                              FCOE_CONNECTION_TYPE);
2332                 fctx->xstorm_ag_context.cdu_reserved = val;
2333                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2334                                              FCOE_CONNECTION_TYPE);
2335                 fctx->ustorm_ag_context.cdu_usage = val;
2336         }
2337         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2338                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2339                 goto err_reply;
2340         }
2341         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2342         if (!fcoe_offload)
2343                 goto err_reply;
2344
2345         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2346         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2347         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2348         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2349         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2350
2351         cid = BNX2X_HW_CID(cp, cid);
2352         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2353                                   FCOE_CONNECTION_TYPE, &l5_data);
2354         if (!ret)
2355                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2356
2357         return ret;
2358
2359 err_reply:
2360         if (cid != -1)
2361                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2362
2363         memset(&kcqe, 0, sizeof(kcqe));
2364         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2365         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2366         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2367
2368         cqes[0] = (struct kcqe *) &kcqe;
2369         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2370         return ret;
2371 }
2372
2373 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2374 {
2375         struct fcoe_kwqe_conn_enable_disable *req;
2376         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2377         union l5cm_specific_data l5_data;
2378         int ret;
2379         u32 cid, l5_cid;
2380         struct cnic_local *cp = dev->cnic_priv;
2381
2382         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2383         cid = req->context_id;
2384         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2385
2386         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2387                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2388                 return -ENOMEM;
2389         }
2390         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2391         if (!fcoe_enable)
2392                 return -ENOMEM;
2393
2394         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2395         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2396         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2397                                   FCOE_CONNECTION_TYPE, &l5_data);
2398         return ret;
2399 }
2400
2401 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2402 {
2403         struct fcoe_kwqe_conn_enable_disable *req;
2404         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2405         union l5cm_specific_data l5_data;
2406         int ret;
2407         u32 cid, l5_cid;
2408         struct cnic_local *cp = dev->cnic_priv;
2409
2410         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2411         cid = req->context_id;
2412         l5_cid = req->conn_id;
2413         if (l5_cid >= dev->max_fcoe_conn)
2414                 return -EINVAL;
2415
2416         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2417
2418         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2419                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2420                 return -ENOMEM;
2421         }
2422         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2423         if (!fcoe_disable)
2424                 return -ENOMEM;
2425
2426         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2427         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2428         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2429                                   FCOE_CONNECTION_TYPE, &l5_data);
2430         return ret;
2431 }
2432
2433 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2434 {
2435         struct fcoe_kwqe_conn_destroy *req;
2436         union l5cm_specific_data l5_data;
2437         int ret;
2438         u32 cid, l5_cid;
2439         struct cnic_local *cp = dev->cnic_priv;
2440         struct cnic_context *ctx;
2441         struct fcoe_kcqe kcqe;
2442         struct kcqe *cqes[1];
2443
2444         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2445         cid = req->context_id;
2446         l5_cid = req->conn_id;
2447         if (l5_cid >= dev->max_fcoe_conn)
2448                 return -EINVAL;
2449
2450         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2451
2452         ctx = &cp->ctx_tbl[l5_cid];
2453
2454         init_waitqueue_head(&ctx->waitq);
2455         ctx->wait_cond = 0;
2456
2457         memset(&kcqe, 0, sizeof(kcqe));
2458         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2459         memset(&l5_data, 0, sizeof(l5_data));
2460         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2461                                   FCOE_CONNECTION_TYPE, &l5_data);
2462         if (ret == 0) {
2463                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2464                 if (ctx->wait_cond)
2465                         kcqe.completion_status = 0;
2466         }
2467
2468         set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2469         queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2470
2471         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2472         kcqe.fcoe_conn_id = req->conn_id;
2473         kcqe.fcoe_conn_context_id = cid;
2474
2475         cqes[0] = (struct kcqe *) &kcqe;
2476         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2477         return ret;
2478 }
2479
2480 static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2481 {
2482         struct cnic_local *cp = dev->cnic_priv;
2483         u32 i;
2484
2485         for (i = start_cid; i < cp->max_cid_space; i++) {
2486                 struct cnic_context *ctx = &cp->ctx_tbl[i];
2487                 int j;
2488
2489                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2490                         msleep(10);
2491
2492                 for (j = 0; j < 5; j++) {
2493                         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2494                                 break;
2495                         msleep(20);
2496                 }
2497
2498                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2499                         netdev_warn(dev->netdev, "CID %x not deleted\n",
2500                                    ctx->cid);
2501         }
2502 }
2503
2504 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2505 {
2506         struct fcoe_kwqe_destroy *req;
2507         union l5cm_specific_data l5_data;
2508         struct cnic_local *cp = dev->cnic_priv;
2509         int ret;
2510         u32 cid;
2511
2512         cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2513
2514         req = (struct fcoe_kwqe_destroy *) kwqe;
2515         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2516
2517         memset(&l5_data, 0, sizeof(l5_data));
2518         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2519                                   FCOE_CONNECTION_TYPE, &l5_data);
2520         return ret;
2521 }
2522
2523 static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2524 {
2525         struct cnic_local *cp = dev->cnic_priv;
2526         struct kcqe kcqe;
2527         struct kcqe *cqes[1];
2528         u32 cid;
2529         u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2530         u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2531         u32 kcqe_op;
2532         int ulp_type;
2533
2534         cid = kwqe->kwqe_info0;
2535         memset(&kcqe, 0, sizeof(kcqe));
2536
2537         if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2538                 u32 l5_cid = 0;
2539
2540                 ulp_type = CNIC_ULP_FCOE;
2541                 if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2542                         struct fcoe_kwqe_conn_enable_disable *req;
2543
2544                         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2545                         kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2546                         cid = req->context_id;
2547                         l5_cid = req->conn_id;
2548                 } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2549                         kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2550                 } else {
2551                         return;
2552                 }
2553                 kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2554                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2555                 kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2556                 kcqe.kcqe_info2 = cid;
2557                 kcqe.kcqe_info0 = l5_cid;
2558
2559         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2560                 ulp_type = CNIC_ULP_ISCSI;
2561                 if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2562                         cid = kwqe->kwqe_info1;
2563
2564                 kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2565                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2566                 kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2567                 kcqe.kcqe_info2 = cid;
2568                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2569
2570         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2571                 struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2572
2573                 ulp_type = CNIC_ULP_L4;
2574                 if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2575                         kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2576                 else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2577                         kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2578                 else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2579                         kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2580                 else
2581                         return;
2582
2583                 kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2584                                     KCQE_FLAGS_LAYER_MASK_L4;
2585                 l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2586                 l4kcqe->cid = cid;
2587                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2588         } else {
2589                 return;
2590         }
2591
2592         cqes[0] = (struct kcqe *) &kcqe;
2593         cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2594 }
2595
2596 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2597                                          struct kwqe *wqes[], u32 num_wqes)
2598 {
2599         int i, work, ret;
2600         u32 opcode;
2601         struct kwqe *kwqe;
2602
2603         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2604                 return -EAGAIN;         /* bnx2 is down */
2605
2606         for (i = 0; i < num_wqes; ) {
2607                 kwqe = wqes[i];
2608                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2609                 work = 1;
2610
2611                 switch (opcode) {
2612                 case ISCSI_KWQE_OPCODE_INIT1:
2613                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2614                         break;
2615                 case ISCSI_KWQE_OPCODE_INIT2:
2616                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2617                         break;
2618                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2619                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2620                                                      num_wqes - i, &work);
2621                         break;
2622                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2623                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2624                         break;
2625                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2626                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2627                         break;
2628                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2629                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2630                                                  &work);
2631                         break;
2632                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2633                         ret = cnic_bnx2x_close(dev, kwqe);
2634                         break;
2635                 case L4_KWQE_OPCODE_VALUE_RESET:
2636                         ret = cnic_bnx2x_reset(dev, kwqe);
2637                         break;
2638                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2639                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2640                         break;
2641                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2642                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2643                         break;
2644                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2645                         ret = 0;
2646                         break;
2647                 default:
2648                         ret = 0;
2649                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2650                                    opcode);
2651                         break;
2652                 }
2653                 if (ret < 0) {
2654                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2655                                    opcode);
2656
2657                         /* Possibly bnx2x parity error, send completion
2658                          * to ulp drivers with error code to speed up
2659                          * cleanup and reset recovery.
2660                          */
2661                         if (ret == -EIO || ret == -EAGAIN)
2662                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2663                 }
2664                 i += work;
2665         }
2666         return 0;
2667 }
2668
2669 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2670                                         struct kwqe *wqes[], u32 num_wqes)
2671 {
2672         struct cnic_local *cp = dev->cnic_priv;
2673         int i, work, ret;
2674         u32 opcode;
2675         struct kwqe *kwqe;
2676
2677         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2678                 return -EAGAIN;         /* bnx2 is down */
2679
2680         if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
2681                 return -EINVAL;
2682
2683         for (i = 0; i < num_wqes; ) {
2684                 kwqe = wqes[i];
2685                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2686                 work = 1;
2687
2688                 switch (opcode) {
2689                 case FCOE_KWQE_OPCODE_INIT1:
2690                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2691                                                     num_wqes - i, &work);
2692                         break;
2693                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2694                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2695                                                     num_wqes - i, &work);
2696                         break;
2697                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2698                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2699                         break;
2700                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2701                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2702                         break;
2703                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2704                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2705                         break;
2706                 case FCOE_KWQE_OPCODE_DESTROY:
2707                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2708                         break;
2709                 case FCOE_KWQE_OPCODE_STAT:
2710                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2711                         break;
2712                 default:
2713                         ret = 0;
2714                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2715                                    opcode);
2716                         break;
2717                 }
2718                 if (ret < 0) {
2719                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2720                                    opcode);
2721
2722                         /* Possibly bnx2x parity error, send completion
2723                          * to ulp drivers with error code to speed up
2724                          * cleanup and reset recovery.
2725                          */
2726                         if (ret == -EIO || ret == -EAGAIN)
2727                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2728                 }
2729                 i += work;
2730         }
2731         return 0;
2732 }
2733
2734 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2735                                    u32 num_wqes)
2736 {
2737         int ret = -EINVAL;
2738         u32 layer_code;
2739
2740         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2741                 return -EAGAIN;         /* bnx2x is down */
2742
2743         if (!num_wqes)
2744                 return 0;
2745
2746         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2747         switch (layer_code) {
2748         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2749         case KWQE_FLAGS_LAYER_MASK_L4:
2750         case KWQE_FLAGS_LAYER_MASK_L2:
2751                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2752                 break;
2753
2754         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2755                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2756                 break;
2757         }
2758         return ret;
2759 }
2760
2761 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2762 {
2763         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2764                 return KCQE_FLAGS_LAYER_MASK_L4;
2765
2766         return opflag & KCQE_FLAGS_LAYER_MASK;
2767 }
2768
2769 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2770 {
2771         struct cnic_local *cp = dev->cnic_priv;
2772         int i, j, comp = 0;
2773
2774         i = 0;
2775         j = 1;
2776         while (num_cqes) {
2777                 struct cnic_ulp_ops *ulp_ops;
2778                 int ulp_type;
2779                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2780                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2781
2782                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2783                         comp++;
2784
2785                 while (j < num_cqes) {
2786                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2787
2788                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2789                                 break;
2790
2791                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2792                                 comp++;
2793                         j++;
2794                 }
2795
2796                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2797                         ulp_type = CNIC_ULP_RDMA;
2798                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2799                         ulp_type = CNIC_ULP_ISCSI;
2800                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2801                         ulp_type = CNIC_ULP_FCOE;
2802                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2803                         ulp_type = CNIC_ULP_L4;
2804                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2805                         goto end;
2806                 else {
2807                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2808                                    kcqe_op_flag);
2809                         goto end;
2810                 }
2811
2812                 rcu_read_lock();
2813                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2814                 if (likely(ulp_ops)) {
2815                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2816                                                   cp->completed_kcq + i, j);
2817                 }
2818                 rcu_read_unlock();
2819 end:
2820                 num_cqes -= j;
2821                 i += j;
2822                 j = 1;
2823         }
2824         if (unlikely(comp))
2825                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2826 }
2827
2828 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2829 {
2830         struct cnic_local *cp = dev->cnic_priv;
2831         u16 i, ri, hw_prod, last;
2832         struct kcqe *kcqe;
2833         int kcqe_cnt = 0, last_cnt = 0;
2834
2835         i = ri = last = info->sw_prod_idx;
2836         ri &= MAX_KCQ_IDX;
2837         hw_prod = *info->hw_prod_idx_ptr;
2838         hw_prod = info->hw_idx(hw_prod);
2839
2840         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2841                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2842                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2843                 i = info->next_idx(i);
2844                 ri = i & MAX_KCQ_IDX;
2845                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2846                         last_cnt = kcqe_cnt;
2847                         last = i;
2848                 }
2849         }
2850
2851         info->sw_prod_idx = last;
2852         return last_cnt;
2853 }
2854
2855 static int cnic_l2_completion(struct cnic_local *cp)
2856 {
2857         u16 hw_cons, sw_cons;
2858         struct cnic_uio_dev *udev = cp->udev;
2859         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2860                                         (udev->l2_ring + (2 * BCM_PAGE_SIZE));
2861         u32 cmd;
2862         int comp = 0;
2863
2864         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2865                 return 0;
2866
2867         hw_cons = *cp->rx_cons_ptr;
2868         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2869                 hw_cons++;
2870
2871         sw_cons = cp->rx_cons;
2872         while (sw_cons != hw_cons) {
2873                 u8 cqe_fp_flags;
2874
2875                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2876                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2877                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2878                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2879                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2880                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2881                             cmd == RAMROD_CMD_ID_ETH_HALT)
2882                                 comp++;
2883                 }
2884                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2885         }
2886         return comp;
2887 }
2888
2889 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2890 {
2891         u16 rx_cons, tx_cons;
2892         int comp = 0;
2893
2894         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2895                 return;
2896
2897         rx_cons = *cp->rx_cons_ptr;
2898         tx_cons = *cp->tx_cons_ptr;
2899         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2900                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2901                         comp = cnic_l2_completion(cp);
2902
2903                 cp->tx_cons = tx_cons;
2904                 cp->rx_cons = rx_cons;
2905
2906                 if (cp->udev)
2907                         uio_event_notify(&cp->udev->cnic_uinfo);
2908         }
2909         if (comp)
2910                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2911 }
2912
2913 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2914 {
2915         struct cnic_local *cp = dev->cnic_priv;
2916         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2917         int kcqe_cnt;
2918
2919         /* status block index must be read before reading other fields */
2920         rmb();
2921         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2922
2923         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2924
2925                 service_kcqes(dev, kcqe_cnt);
2926
2927                 /* Tell compiler that status_blk fields can change. */
2928                 barrier();
2929                 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2930                 /* status block index must be read first */
2931                 rmb();
2932                 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2933         }
2934
2935         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2936
2937         cnic_chk_pkt_rings(cp);
2938
2939         return status_idx;
2940 }
2941
2942 static int cnic_service_bnx2(void *data, void *status_blk)
2943 {
2944         struct cnic_dev *dev = data;
2945
2946         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2947                 struct status_block *sblk = status_blk;
2948
2949                 return sblk->status_idx;
2950         }
2951
2952         return cnic_service_bnx2_queues(dev);
2953 }
2954
2955 static void cnic_service_bnx2_msix(unsigned long data)
2956 {
2957         struct cnic_dev *dev = (struct cnic_dev *) data;
2958         struct cnic_local *cp = dev->cnic_priv;
2959
2960         cp->last_status_idx = cnic_service_bnx2_queues(dev);
2961
2962         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2963                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2964 }
2965
2966 static void cnic_doirq(struct cnic_dev *dev)
2967 {
2968         struct cnic_local *cp = dev->cnic_priv;
2969
2970         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2971                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
2972
2973                 prefetch(cp->status_blk.gen);
2974                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2975
2976                 tasklet_schedule(&cp->cnic_irq_task);
2977         }
2978 }
2979
2980 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2981 {
2982         struct cnic_dev *dev = dev_instance;
2983         struct cnic_local *cp = dev->cnic_priv;
2984
2985         if (cp->ack_int)
2986                 cp->ack_int(dev);
2987
2988         cnic_doirq(dev);
2989
2990         return IRQ_HANDLED;
2991 }
2992
2993 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2994                                       u16 index, u8 op, u8 update)
2995 {
2996         struct cnic_local *cp = dev->cnic_priv;
2997         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2998                        COMMAND_REG_INT_ACK);
2999         struct igu_ack_register igu_ack;
3000
3001         igu_ack.status_block_index = index;
3002         igu_ack.sb_id_and_flags =
3003                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
3004                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3005                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3006                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3007
3008         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3009 }
3010
3011 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3012                             u16 index, u8 op, u8 update)
3013 {
3014         struct igu_regular cmd_data;
3015         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3016
3017         cmd_data.sb_id_and_flags =
3018                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3019                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3020                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
3021                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3022
3023
3024         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3025 }
3026
3027 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3028 {
3029         struct cnic_local *cp = dev->cnic_priv;
3030
3031         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3032                            IGU_INT_DISABLE, 0);
3033 }
3034
3035 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3036 {
3037         struct cnic_local *cp = dev->cnic_priv;
3038
3039         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3040                         IGU_INT_DISABLE, 0);
3041 }
3042
3043 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3044 {
3045         u32 last_status = *info->status_idx_ptr;
3046         int kcqe_cnt;
3047
3048         /* status block index must be read before reading the KCQ */
3049         rmb();
3050         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3051
3052                 service_kcqes(dev, kcqe_cnt);
3053
3054                 /* Tell compiler that sblk fields can change. */
3055                 barrier();
3056
3057                 last_status = *info->status_idx_ptr;
3058                 /* status block index must be read before reading the KCQ */
3059                 rmb();
3060         }
3061         return last_status;
3062 }
3063
3064 static void cnic_service_bnx2x_bh(unsigned long data)
3065 {
3066         struct cnic_dev *dev = (struct cnic_dev *) data;
3067         struct cnic_local *cp = dev->cnic_priv;
3068         u32 status_idx, new_status_idx;
3069
3070         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3071                 return;
3072
3073         while (1) {
3074                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3075
3076                 CNIC_WR16(dev, cp->kcq1.io_addr,
3077                           cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3078
3079                 if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
3080                         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
3081                                            status_idx, IGU_INT_ENABLE, 1);
3082                         break;
3083                 }
3084
3085                 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3086
3087                 if (new_status_idx != status_idx)
3088                         continue;
3089
3090                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3091                           MAX_KCQ_IDX);
3092
3093                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3094                                 status_idx, IGU_INT_ENABLE, 1);
3095
3096                 break;
3097         }
3098 }
3099
3100 static int cnic_service_bnx2x(void *data, void *status_blk)
3101 {
3102         struct cnic_dev *dev = data;
3103         struct cnic_local *cp = dev->cnic_priv;
3104
3105         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3106                 cnic_doirq(dev);
3107
3108         cnic_chk_pkt_rings(cp);
3109
3110         return 0;
3111 }
3112
3113 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3114 {
3115         struct cnic_ulp_ops *ulp_ops;
3116
3117         if (if_type == CNIC_ULP_ISCSI)
3118                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3119
3120         mutex_lock(&cnic_lock);
3121         ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3122                                             lockdep_is_held(&cnic_lock));
3123         if (!ulp_ops) {
3124                 mutex_unlock(&cnic_lock);
3125                 return;
3126         }
3127         set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3128         mutex_unlock(&cnic_lock);
3129
3130         if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3131                 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3132
3133         clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3134 }
3135
3136 static void cnic_ulp_stop(struct cnic_dev *dev)
3137 {
3138         struct cnic_local *cp = dev->cnic_priv;
3139         int if_type;
3140
3141         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3142                 cnic_ulp_stop_one(cp, if_type);
3143 }
3144
3145 static void cnic_ulp_start(struct cnic_dev *dev)
3146 {
3147         struct cnic_local *cp = dev->cnic_priv;
3148         int if_type;
3149
3150         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3151                 struct cnic_ulp_ops *ulp_ops;
3152
3153                 mutex_lock(&cnic_lock);
3154                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3155                                                     lockdep_is_held(&cnic_lock));
3156                 if (!ulp_ops || !ulp_ops->cnic_start) {
3157                         mutex_unlock(&cnic_lock);
3158                         continue;
3159                 }
3160                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3161                 mutex_unlock(&cnic_lock);
3162
3163                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3164                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3165
3166                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3167         }
3168 }
3169
3170 static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3171 {
3172         struct cnic_local *cp = dev->cnic_priv;
3173         struct cnic_ulp_ops *ulp_ops;
3174         int rc;
3175
3176         mutex_lock(&cnic_lock);
3177         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
3178         if (ulp_ops && ulp_ops->cnic_get_stats)
3179                 rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3180         else
3181                 rc = -ENODEV;
3182         mutex_unlock(&cnic_lock);
3183         return rc;
3184 }
3185
3186 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3187 {
3188         struct cnic_dev *dev = data;
3189         int ulp_type = CNIC_ULP_ISCSI;
3190
3191         switch (info->cmd) {
3192         case CNIC_CTL_STOP_CMD:
3193                 cnic_hold(dev);
3194
3195                 cnic_ulp_stop(dev);
3196                 cnic_stop_hw(dev);
3197
3198                 cnic_put(dev);
3199                 break;
3200         case CNIC_CTL_START_CMD:
3201                 cnic_hold(dev);
3202
3203                 if (!cnic_start_hw(dev))
3204                         cnic_ulp_start(dev);
3205
3206                 cnic_put(dev);
3207                 break;
3208         case CNIC_CTL_STOP_ISCSI_CMD: {
3209                 struct cnic_local *cp = dev->cnic_priv;
3210                 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3211                 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3212                 break;
3213         }
3214         case CNIC_CTL_COMPLETION_CMD: {
3215                 struct cnic_ctl_completion *comp = &info->data.comp;
3216                 u32 cid = BNX2X_SW_CID(comp->cid);
3217                 u32 l5_cid;
3218                 struct cnic_local *cp = dev->cnic_priv;
3219
3220                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3221                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3222
3223                         if (unlikely(comp->error)) {
3224                                 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3225                                 netdev_err(dev->netdev,
3226                                            "CID %x CFC delete comp error %x\n",
3227                                            cid, comp->error);
3228                         }
3229
3230                         ctx->wait_cond = 1;
3231                         wake_up(&ctx->waitq);
3232                 }
3233                 break;
3234         }
3235         case CNIC_CTL_FCOE_STATS_GET_CMD:
3236                 ulp_type = CNIC_ULP_FCOE;
3237                 /* fall through */
3238         case CNIC_CTL_ISCSI_STATS_GET_CMD:
3239                 cnic_hold(dev);
3240                 cnic_copy_ulp_stats(dev, ulp_type);
3241                 cnic_put(dev);
3242                 break;
3243
3244         default:
3245                 return -EINVAL;
3246         }
3247         return 0;
3248 }
3249
3250 static void cnic_ulp_init(struct cnic_dev *dev)
3251 {
3252         int i;
3253         struct cnic_local *cp = dev->cnic_priv;
3254
3255         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3256                 struct cnic_ulp_ops *ulp_ops;
3257
3258                 mutex_lock(&cnic_lock);
3259                 ulp_ops = cnic_ulp_tbl_prot(i);
3260                 if (!ulp_ops || !ulp_ops->cnic_init) {
3261                         mutex_unlock(&cnic_lock);
3262                         continue;
3263                 }
3264                 ulp_get(ulp_ops);
3265                 mutex_unlock(&cnic_lock);
3266
3267                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3268                         ulp_ops->cnic_init(dev);
3269
3270                 ulp_put(ulp_ops);
3271         }
3272 }
3273
3274 static void cnic_ulp_exit(struct cnic_dev *dev)
3275 {
3276         int i;
3277         struct cnic_local *cp = dev->cnic_priv;
3278
3279         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3280                 struct cnic_ulp_ops *ulp_ops;
3281
3282                 mutex_lock(&cnic_lock);
3283                 ulp_ops = cnic_ulp_tbl_prot(i);
3284                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3285                         mutex_unlock(&cnic_lock);
3286                         continue;
3287                 }
3288                 ulp_get(ulp_ops);
3289                 mutex_unlock(&cnic_lock);
3290
3291                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3292                         ulp_ops->cnic_exit(dev);
3293
3294                 ulp_put(ulp_ops);
3295         }
3296 }
3297
3298 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3299 {
3300         struct cnic_dev *dev = csk->dev;
3301         struct l4_kwq_offload_pg *l4kwqe;
3302         struct kwqe *wqes[1];
3303
3304         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3305         memset(l4kwqe, 0, sizeof(*l4kwqe));
3306         wqes[0] = (struct kwqe *) l4kwqe;
3307
3308         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3309         l4kwqe->flags =
3310                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3311         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3312
3313         l4kwqe->da0 = csk->ha[0];
3314         l4kwqe->da1 = csk->ha[1];
3315         l4kwqe->da2 = csk->ha[2];
3316         l4kwqe->da3 = csk->ha[3];
3317         l4kwqe->da4 = csk->ha[4];
3318         l4kwqe->da5 = csk->ha[5];
3319
3320         l4kwqe->sa0 = dev->mac_addr[0];
3321         l4kwqe->sa1 = dev->mac_addr[1];
3322         l4kwqe->sa2 = dev->mac_addr[2];
3323         l4kwqe->sa3 = dev->mac_addr[3];
3324         l4kwqe->sa4 = dev->mac_addr[4];
3325         l4kwqe->sa5 = dev->mac_addr[5];
3326
3327         l4kwqe->etype = ETH_P_IP;
3328         l4kwqe->ipid_start = DEF_IPID_START;
3329         l4kwqe->host_opaque = csk->l5_cid;
3330
3331         if (csk->vlan_id) {
3332                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3333                 l4kwqe->vlan_tag = csk->vlan_id;
3334                 l4kwqe->l2hdr_nbytes += 4;
3335         }
3336
3337         return dev->submit_kwqes(dev, wqes, 1);
3338 }
3339
3340 static int cnic_cm_update_pg(struct cnic_sock *csk)
3341 {
3342         struct cnic_dev *dev = csk->dev;
3343         struct l4_kwq_update_pg *l4kwqe;
3344         struct kwqe *wqes[1];
3345
3346         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3347         memset(l4kwqe, 0, sizeof(*l4kwqe));
3348         wqes[0] = (struct kwqe *) l4kwqe;
3349
3350         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3351         l4kwqe->flags =
3352                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3353         l4kwqe->pg_cid = csk->pg_cid;
3354
3355         l4kwqe->da0 = csk->ha[0];
3356         l4kwqe->da1 = csk->ha[1];
3357         l4kwqe->da2 = csk->ha[2];
3358         l4kwqe->da3 = csk->ha[3];
3359         l4kwqe->da4 = csk->ha[4];
3360         l4kwqe->da5 = csk->ha[5];
3361
3362         l4kwqe->pg_host_opaque = csk->l5_cid;
3363         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3364
3365         return dev->submit_kwqes(dev, wqes, 1);
3366 }
3367
3368 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3369 {
3370         struct cnic_dev *dev = csk->dev;
3371         struct l4_kwq_upload *l4kwqe;
3372         struct kwqe *wqes[1];
3373
3374         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3375         memset(l4kwqe, 0, sizeof(*l4kwqe));
3376         wqes[0] = (struct kwqe *) l4kwqe;
3377
3378         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3379         l4kwqe->flags =
3380                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3381         l4kwqe->cid = csk->pg_cid;
3382
3383         return dev->submit_kwqes(dev, wqes, 1);
3384 }
3385
3386 static int cnic_cm_conn_req(struct cnic_sock *csk)
3387 {
3388         struct cnic_dev *dev = csk->dev;
3389         struct l4_kwq_connect_req1 *l4kwqe1;
3390         struct l4_kwq_connect_req2 *l4kwqe2;
3391         struct l4_kwq_connect_req3 *l4kwqe3;
3392         struct kwqe *wqes[3];
3393         u8 tcp_flags = 0;
3394         int num_wqes = 2;
3395
3396         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3397         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3398         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3399         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3400         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3401         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3402
3403         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3404         l4kwqe3->flags =
3405                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3406         l4kwqe3->ka_timeout = csk->ka_timeout;
3407         l4kwqe3->ka_interval = csk->ka_interval;
3408         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3409         l4kwqe3->tos = csk->tos;
3410         l4kwqe3->ttl = csk->ttl;
3411         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3412         l4kwqe3->pmtu = csk->mtu;
3413         l4kwqe3->rcv_buf = csk->rcv_buf;
3414         l4kwqe3->snd_buf = csk->snd_buf;
3415         l4kwqe3->seed = csk->seed;
3416
3417         wqes[0] = (struct kwqe *) l4kwqe1;
3418         if (test_bit(SK_F_IPV6, &csk->flags)) {
3419                 wqes[1] = (struct kwqe *) l4kwqe2;
3420                 wqes[2] = (struct kwqe *) l4kwqe3;
3421                 num_wqes = 3;
3422
3423                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3424                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3425                 l4kwqe2->flags =
3426                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3427                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3428                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3429                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3430                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3431                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3432                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3433                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3434                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3435                                sizeof(struct tcphdr);
3436         } else {
3437                 wqes[1] = (struct kwqe *) l4kwqe3;
3438                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3439                                sizeof(struct tcphdr);
3440         }
3441
3442         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3443         l4kwqe1->flags =
3444                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3445                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3446         l4kwqe1->cid = csk->cid;
3447         l4kwqe1->pg_cid = csk->pg_cid;
3448         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3449         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3450         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3451         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3452         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3453                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3454         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3455                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3456         if (csk->tcp_flags & SK_TCP_NAGLE)
3457                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3458         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3459                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3460         if (csk->tcp_flags & SK_TCP_SACK)
3461                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3462         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3463                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3464
3465         l4kwqe1->tcp_flags = tcp_flags;
3466
3467         return dev->submit_kwqes(dev, wqes, num_wqes);
3468 }
3469
3470 static int cnic_cm_close_req(struct cnic_sock *csk)
3471 {
3472         struct cnic_dev *dev = csk->dev;
3473         struct l4_kwq_close_req *l4kwqe;
3474         struct kwqe *wqes[1];
3475
3476         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3477         memset(l4kwqe, 0, sizeof(*l4kwqe));
3478         wqes[0] = (struct kwqe *) l4kwqe;
3479
3480         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3481         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3482         l4kwqe->cid = csk->cid;
3483
3484         return dev->submit_kwqes(dev, wqes, 1);
3485 }
3486
3487 static int cnic_cm_abort_req(struct cnic_sock *csk)
3488 {
3489         struct cnic_dev *dev = csk->dev;
3490         struct l4_kwq_reset_req *l4kwqe;
3491         struct kwqe *wqes[1];
3492
3493         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3494         memset(l4kwqe, 0, sizeof(*l4kwqe));
3495         wqes[0] = (struct kwqe *) l4kwqe;
3496
3497         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3498         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3499         l4kwqe->cid = csk->cid;
3500
3501         return dev->submit_kwqes(dev, wqes, 1);
3502 }
3503
3504 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3505                           u32 l5_cid, struct cnic_sock **csk, void *context)
3506 {
3507         struct cnic_local *cp = dev->cnic_priv;
3508         struct cnic_sock *csk1;
3509
3510         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3511                 return -EINVAL;
3512
3513         if (cp->ctx_tbl) {
3514                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3515
3516                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3517                         return -EAGAIN;
3518         }
3519
3520         csk1 = &cp->csk_tbl[l5_cid];
3521         if (atomic_read(&csk1->ref_count))
3522                 return -EAGAIN;
3523
3524         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3525                 return -EBUSY;
3526
3527         csk1->dev = dev;
3528         csk1->cid = cid;
3529         csk1->l5_cid = l5_cid;
3530         csk1->ulp_type = ulp_type;
3531         csk1->context = context;
3532
3533         csk1->ka_timeout = DEF_KA_TIMEOUT;
3534         csk1->ka_interval = DEF_KA_INTERVAL;
3535         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3536         csk1->tos = DEF_TOS;
3537         csk1->ttl = DEF_TTL;
3538         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3539         csk1->rcv_buf = DEF_RCV_BUF;
3540         csk1->snd_buf = DEF_SND_BUF;
3541         csk1->seed = DEF_SEED;
3542
3543         *csk = csk1;
3544         return 0;
3545 }
3546
3547 static void cnic_cm_cleanup(struct cnic_sock *csk)
3548 {
3549         if (csk->src_port) {
3550                 struct cnic_dev *dev = csk->dev;
3551                 struct cnic_local *cp = dev->cnic_priv;
3552
3553                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3554                 csk->src_port = 0;
3555         }
3556 }
3557
3558 static void cnic_close_conn(struct cnic_sock *csk)
3559 {
3560         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3561                 cnic_cm_upload_pg(csk);
3562                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3563         }
3564         cnic_cm_cleanup(csk);
3565 }
3566
3567 static int cnic_cm_destroy(struct cnic_sock *csk)
3568 {
3569         if (!cnic_in_use(csk))
3570                 return -EINVAL;
3571
3572         csk_hold(csk);
3573         clear_bit(SK_F_INUSE, &csk->flags);
3574         smp_mb__after_clear_bit();
3575         while (atomic_read(&csk->ref_count) != 1)
3576                 msleep(1);
3577         cnic_cm_cleanup(csk);
3578
3579         csk->flags = 0;
3580         csk_put(csk);
3581         return 0;
3582 }
3583
3584 static inline u16 cnic_get_vlan(struct net_device *dev,
3585                                 struct net_device **vlan_dev)
3586 {
3587         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3588                 *vlan_dev = vlan_dev_real_dev(dev);
3589                 return vlan_dev_vlan_id(dev);
3590         }
3591         *vlan_dev = dev;
3592         return 0;
3593 }
3594
3595 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3596                              struct dst_entry **dst)
3597 {
3598 #if defined(CONFIG_INET)
3599         struct rtable *rt;
3600
3601         rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3602         if (!IS_ERR(rt)) {
3603                 *dst = &rt->dst;
3604                 return 0;
3605         }
3606         return PTR_ERR(rt);
3607 #else
3608         return -ENETUNREACH;
3609 #endif
3610 }
3611
3612 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3613                              struct dst_entry **dst)
3614 {
3615 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3616         struct flowi6 fl6;
3617
3618         memset(&fl6, 0, sizeof(fl6));
3619         fl6.daddr = dst_addr->sin6_addr;
3620         if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3621                 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3622
3623         *dst = ip6_route_output(&init_net, NULL, &fl6);
3624         if ((*dst)->error) {
3625                 dst_release(*dst);
3626                 *dst = NULL;
3627                 return -ENETUNREACH;
3628         } else
3629                 return 0;
3630 #endif
3631
3632         return -ENETUNREACH;
3633 }
3634
3635 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3636                                            int ulp_type)
3637 {
3638         struct cnic_dev *dev = NULL;
3639         struct dst_entry *dst;
3640         struct net_device *netdev = NULL;
3641         int err = -ENETUNREACH;
3642
3643         if (dst_addr->sin_family == AF_INET)
3644                 err = cnic_get_v4_route(dst_addr, &dst);
3645         else if (dst_addr->sin_family == AF_INET6) {
3646                 struct sockaddr_in6 *dst_addr6 =
3647                         (struct sockaddr_in6 *) dst_addr;
3648
3649                 err = cnic_get_v6_route(dst_addr6, &dst);
3650         } else
3651                 return NULL;
3652
3653         if (err)
3654                 return NULL;
3655
3656         if (!dst->dev)
3657                 goto done;
3658
3659         cnic_get_vlan(dst->dev, &netdev);
3660
3661         dev = cnic_from_netdev(netdev);
3662
3663 done:
3664         dst_release(dst);
3665         if (dev)
3666                 cnic_put(dev);
3667         return dev;
3668 }
3669
3670 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3671 {
3672         struct cnic_dev *dev = csk->dev;
3673         struct cnic_local *cp = dev->cnic_priv;
3674
3675         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3676 }
3677
3678 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3679 {
3680         struct cnic_dev *dev = csk->dev;
3681         struct cnic_local *cp = dev->cnic_priv;
3682         int is_v6, rc = 0;
3683         struct dst_entry *dst = NULL;
3684         struct net_device *realdev;
3685         __be16 local_port;
3686         u32 port_id;
3687
3688         if (saddr->local.v6.sin6_family == AF_INET6 &&
3689             saddr->remote.v6.sin6_family == AF_INET6)
3690                 is_v6 = 1;
3691         else if (saddr->local.v4.sin_family == AF_INET &&
3692                  saddr->remote.v4.sin_family == AF_INET)
3693                 is_v6 = 0;
3694         else
3695                 return -EINVAL;
3696
3697         clear_bit(SK_F_IPV6, &csk->flags);
3698
3699         if (is_v6) {
3700                 set_bit(SK_F_IPV6, &csk->flags);
3701                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3702
3703                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3704                        sizeof(struct in6_addr));
3705                 csk->dst_port = saddr->remote.v6.sin6_port;
3706                 local_port = saddr->local.v6.sin6_port;
3707
3708         } else {
3709                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3710
3711                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3712                 csk->dst_port = saddr->remote.v4.sin_port;
3713                 local_port = saddr->local.v4.sin_port;
3714         }
3715
3716         csk->vlan_id = 0;
3717         csk->mtu = dev->netdev->mtu;
3718         if (dst && dst->dev) {
3719                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3720                 if (realdev == dev->netdev) {
3721                         csk->vlan_id = vlan;
3722                         csk->mtu = dst_mtu(dst);
3723                 }
3724         }
3725
3726         port_id = be16_to_cpu(local_port);
3727         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3728             port_id < CNIC_LOCAL_PORT_MAX) {
3729                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3730                         port_id = 0;
3731         } else
3732                 port_id = 0;
3733
3734         if (!port_id) {
3735                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3736                 if (port_id == -1) {
3737                         rc = -ENOMEM;
3738                         goto err_out;
3739                 }
3740                 local_port = cpu_to_be16(port_id);
3741         }
3742         csk->src_port = local_port;
3743
3744 err_out:
3745         dst_release(dst);
3746         return rc;
3747 }
3748
3749 static void cnic_init_csk_state(struct cnic_sock *csk)
3750 {
3751         csk->state = 0;
3752         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3753         clear_bit(SK_F_CLOSING, &csk->flags);
3754 }
3755
3756 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3757 {
3758         struct cnic_local *cp = csk->dev->cnic_priv;
3759         int err = 0;
3760
3761         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3762                 return -EOPNOTSUPP;
3763
3764         if (!cnic_in_use(csk))
3765                 return -EINVAL;
3766
3767         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3768                 return -EINVAL;
3769
3770         cnic_init_csk_state(csk);
3771
3772         err = cnic_get_route(csk, saddr);
3773         if (err)
3774                 goto err_out;
3775
3776         err = cnic_resolve_addr(csk, saddr);
3777         if (!err)
3778                 return 0;
3779
3780 err_out:
3781         clear_bit(SK_F_CONNECT_START, &csk->flags);
3782         return err;
3783 }
3784
3785 static int cnic_cm_abort(struct cnic_sock *csk)
3786 {
3787         struct cnic_local *cp = csk->dev->cnic_priv;
3788         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3789
3790         if (!cnic_in_use(csk))
3791                 return -EINVAL;
3792
3793         if (cnic_abort_prep(csk))
3794                 return cnic_cm_abort_req(csk);
3795
3796         /* Getting here means that we haven't started connect, or
3797          * connect was not successful.
3798          */
3799
3800         cp->close_conn(csk, opcode);
3801         if (csk->state != opcode)
3802                 return -EALREADY;
3803
3804         return 0;
3805 }
3806
3807 static int cnic_cm_close(struct cnic_sock *csk)
3808 {
3809         if (!cnic_in_use(csk))
3810                 return -EINVAL;
3811
3812         if (cnic_close_prep(csk)) {
3813                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3814                 return cnic_cm_close_req(csk);
3815         } else {
3816                 return -EALREADY;
3817         }
3818         return 0;
3819 }
3820
3821 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3822                            u8 opcode)
3823 {
3824         struct cnic_ulp_ops *ulp_ops;
3825         int ulp_type = csk->ulp_type;
3826
3827         rcu_read_lock();
3828         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3829         if (ulp_ops) {
3830                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3831                         ulp_ops->cm_connect_complete(csk);
3832                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3833                         ulp_ops->cm_close_complete(csk);
3834                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3835                         ulp_ops->cm_remote_abort(csk);
3836                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3837                         ulp_ops->cm_abort_complete(csk);
3838                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3839                         ulp_ops->cm_remote_close(csk);
3840         }
3841         rcu_read_unlock();
3842 }
3843
3844 static int cnic_cm_set_pg(struct cnic_sock *csk)
3845 {
3846         if (cnic_offld_prep(csk)) {
3847                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3848                         cnic_cm_update_pg(csk);
3849                 else
3850                         cnic_cm_offload_pg(csk);
3851         }
3852         return 0;
3853 }
3854
3855 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3856 {
3857         struct cnic_local *cp = dev->cnic_priv;
3858         u32 l5_cid = kcqe->pg_host_opaque;
3859         u8 opcode = kcqe->op_code;
3860         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3861
3862         csk_hold(csk);
3863         if (!cnic_in_use(csk))
3864                 goto done;
3865
3866         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3867                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3868                 goto done;
3869         }
3870         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3871         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3872                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3873                 cnic_cm_upcall(cp, csk,
3874                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3875                 goto done;
3876         }
3877
3878         csk->pg_cid = kcqe->pg_cid;
3879         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3880         cnic_cm_conn_req(csk);
3881
3882 done:
3883         csk_put(csk);
3884 }
3885
3886 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3887 {
3888         struct cnic_local *cp = dev->cnic_priv;
3889         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3890         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3891         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3892
3893         ctx->timestamp = jiffies;
3894         ctx->wait_cond = 1;
3895         wake_up(&ctx->waitq);
3896 }
3897
3898 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3899 {
3900         struct cnic_local *cp = dev->cnic_priv;
3901         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3902         u8 opcode = l4kcqe->op_code;
3903         u32 l5_cid;
3904         struct cnic_sock *csk;
3905
3906         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3907                 cnic_process_fcoe_term_conn(dev, kcqe);
3908                 return;
3909         }
3910         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3911             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3912                 cnic_cm_process_offld_pg(dev, l4kcqe);
3913                 return;
3914         }
3915
3916         l5_cid = l4kcqe->conn_id;
3917         if (opcode & 0x80)
3918                 l5_cid = l4kcqe->cid;
3919         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3920                 return;
3921
3922         csk = &cp->csk_tbl[l5_cid];
3923         csk_hold(csk);
3924
3925         if (!cnic_in_use(csk)) {
3926                 csk_put(csk);
3927                 return;
3928         }
3929
3930         switch (opcode) {
3931         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3932                 if (l4kcqe->status != 0) {
3933                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3934                         cnic_cm_upcall(cp, csk,
3935                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3936                 }
3937                 break;
3938         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3939                 if (l4kcqe->status == 0)
3940                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3941                 else if (l4kcqe->status ==
3942                          L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
3943                         set_bit(SK_F_HW_ERR, &csk->flags);
3944
3945                 smp_mb__before_clear_bit();
3946                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3947                 cnic_cm_upcall(cp, csk, opcode);
3948                 break;
3949
3950         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3951         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3952         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3953         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3954         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3955                 if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
3956                         set_bit(SK_F_HW_ERR, &csk->flags);
3957
3958                 cp->close_conn(csk, opcode);
3959                 break;
3960
3961         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3962                 /* after we already sent CLOSE_REQ */
3963                 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
3964                     !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
3965                     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3966                         cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
3967                 else
3968                         cnic_cm_upcall(cp, csk, opcode);
3969                 break;
3970         }
3971         csk_put(csk);
3972 }
3973
3974 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3975 {
3976         struct cnic_dev *dev = data;
3977         int i;
3978
3979         for (i = 0; i < num; i++)
3980                 cnic_cm_process_kcqe(dev, kcqe[i]);
3981 }
3982
3983 static struct cnic_ulp_ops cm_ulp_ops = {
3984         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3985 };
3986
3987 static void cnic_cm_free_mem(struct cnic_dev *dev)
3988 {
3989         struct cnic_local *cp = dev->cnic_priv;
3990
3991         kfree(cp->csk_tbl);
3992         cp->csk_tbl = NULL;
3993         cnic_free_id_tbl(&cp->csk_port_tbl);
3994 }
3995
3996 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3997 {
3998         struct cnic_local *cp = dev->cnic_priv;
3999         u32 port_id;
4000
4001         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
4002                               GFP_KERNEL);
4003         if (!cp->csk_tbl)
4004                 return -ENOMEM;
4005
4006         port_id = random32();
4007         port_id %= CNIC_LOCAL_PORT_RANGE;
4008         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4009                              CNIC_LOCAL_PORT_MIN, port_id)) {
4010                 cnic_cm_free_mem(dev);
4011                 return -ENOMEM;
4012         }
4013         return 0;
4014 }
4015
4016 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
4017 {
4018         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
4019                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
4020                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
4021                 csk->state = opcode;
4022         }
4023
4024         /* 1. If event opcode matches the expected event in csk->state
4025          * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
4026          *    event
4027          * 3. If the expected event is 0, meaning the connection was never
4028          *    never established, we accept the opcode from cm_abort.
4029          */
4030         if (opcode == csk->state || csk->state == 0 ||
4031             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
4032             csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4033                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
4034                         if (csk->state == 0)
4035                                 csk->state = opcode;
4036                         return 1;
4037                 }
4038         }
4039         return 0;
4040 }
4041
4042 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
4043 {
4044         struct cnic_dev *dev = csk->dev;
4045         struct cnic_local *cp = dev->cnic_priv;
4046
4047         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
4048                 cnic_cm_upcall(cp, csk, opcode);
4049                 return;
4050         }
4051
4052         clear_bit(SK_F_CONNECT_START, &csk->flags);
4053         cnic_close_conn(csk);
4054         csk->state = opcode;
4055         cnic_cm_upcall(cp, csk, opcode);
4056 }
4057
4058 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
4059 {
4060 }
4061
4062 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
4063 {
4064         u32 seed;
4065
4066         seed = random32();
4067         cnic_ctx_wr(dev, 45, 0, seed);
4068         return 0;
4069 }
4070
4071 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
4072 {
4073         struct cnic_dev *dev = csk->dev;
4074         struct cnic_local *cp = dev->cnic_priv;
4075         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
4076         union l5cm_specific_data l5_data;
4077         u32 cmd = 0;
4078         int close_complete = 0;
4079
4080         switch (opcode) {
4081         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4082         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4083         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4084                 if (cnic_ready_to_close(csk, opcode)) {
4085                         if (test_bit(SK_F_HW_ERR, &csk->flags))
4086                                 close_complete = 1;
4087                         else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4088                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
4089                         else
4090                                 close_complete = 1;
4091                 }
4092                 break;
4093         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4094                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
4095                 break;
4096         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4097                 close_complete = 1;
4098                 break;
4099         }
4100         if (cmd) {
4101                 memset(&l5_data, 0, sizeof(l5_data));
4102
4103                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
4104                                     &l5_data);
4105         } else if (close_complete) {
4106                 ctx->timestamp = jiffies;
4107                 cnic_close_conn(csk);
4108                 cnic_cm_upcall(cp, csk, csk->state);
4109         }
4110 }
4111
4112 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
4113 {
4114         struct cnic_local *cp = dev->cnic_priv;
4115
4116         if (!cp->ctx_tbl)
4117                 return;
4118
4119         if (!netif_running(dev->netdev))
4120                 return;
4121
4122         cnic_bnx2x_delete_wait(dev, 0);
4123
4124         cancel_delayed_work(&cp->delete_task);
4125         flush_workqueue(cnic_wq);
4126
4127         if (atomic_read(&cp->iscsi_conn) != 0)
4128                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
4129                             atomic_read(&cp->iscsi_conn));
4130 }
4131
4132 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
4133 {
4134         struct cnic_local *cp = dev->cnic_priv;
4135         u32 pfid = cp->pfid;
4136         u32 port = CNIC_PORT(cp);
4137
4138         cnic_init_bnx2x_mac(dev);
4139         cnic_bnx2x_set_tcp_timestamp(dev, 1);
4140
4141         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4142                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4143
4144         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4145                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4146         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4147                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4148                 DEF_MAX_DA_COUNT);
4149
4150         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4151                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4152         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4153                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4154         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4155                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4156         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4157                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4158
4159         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4160                 DEF_MAX_CWND);
4161         return 0;
4162 }
4163
4164 static void cnic_delete_task(struct work_struct *work)
4165 {
4166         struct cnic_local *cp;
4167         struct cnic_dev *dev;
4168         u32 i;
4169         int need_resched = 0;
4170
4171         cp = container_of(work, struct cnic_local, delete_task.work);
4172         dev = cp->dev;
4173
4174         if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4175                 struct drv_ctl_info info;
4176
4177                 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4178
4179                 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4180                 cp->ethdev->drv_ctl(dev->netdev, &info);
4181         }
4182
4183         for (i = 0; i < cp->max_cid_space; i++) {
4184                 struct cnic_context *ctx = &cp->ctx_tbl[i];
4185                 int err;
4186
4187                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4188                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4189                         continue;
4190
4191                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4192                         need_resched = 1;
4193                         continue;
4194                 }
4195
4196                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4197                         continue;
4198
4199                 err = cnic_bnx2x_destroy_ramrod(dev, i);
4200
4201                 cnic_free_bnx2x_conn_resc(dev, i);
4202                 if (!err) {
4203                         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4204                                 atomic_dec(&cp->iscsi_conn);
4205
4206                         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4207                 }
4208         }
4209
4210         if (need_resched)
4211                 queue_delayed_work(cnic_wq, &cp->delete_task,
4212                                    msecs_to_jiffies(10));
4213
4214 }
4215
4216 static int cnic_cm_open(struct cnic_dev *dev)
4217 {
4218         struct cnic_local *cp = dev->cnic_priv;
4219         int err;
4220
4221         err = cnic_cm_alloc_mem(dev);
4222         if (err)
4223                 return err;
4224
4225         err = cp->start_cm(dev);
4226
4227         if (err)
4228                 goto err_out;
4229
4230         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4231
4232         dev->cm_create = cnic_cm_create;
4233         dev->cm_destroy = cnic_cm_destroy;
4234         dev->cm_connect = cnic_cm_connect;
4235         dev->cm_abort = cnic_cm_abort;
4236         dev->cm_close = cnic_cm_close;
4237         dev->cm_select_dev = cnic_cm_select_dev;
4238
4239         cp->ulp_handle[CNIC_ULP_L4] = dev;
4240         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4241         return 0;
4242
4243 err_out:
4244         cnic_cm_free_mem(dev);
4245         return err;
4246 }
4247
4248 static int cnic_cm_shutdown(struct cnic_dev *dev)
4249 {
4250         struct cnic_local *cp = dev->cnic_priv;
4251         int i;
4252
4253         cp->stop_cm(dev);
4254
4255         if (!cp->csk_tbl)
4256                 return 0;
4257
4258         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4259                 struct cnic_sock *csk = &cp->csk_tbl[i];
4260
4261                 clear_bit(SK_F_INUSE, &csk->flags);
4262                 cnic_cm_cleanup(csk);
4263         }
4264         cnic_cm_free_mem(dev);
4265
4266         return 0;
4267 }
4268
4269 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4270 {
4271         u32 cid_addr;
4272         int i;
4273
4274         cid_addr = GET_CID_ADDR(cid);
4275
4276         for (i = 0; i < CTX_SIZE; i += 4)
4277                 cnic_ctx_wr(dev, cid_addr, i, 0);
4278 }
4279
4280 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4281 {
4282         struct cnic_local *cp = dev->cnic_priv;
4283         int ret = 0, i;
4284         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4285
4286         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4287                 return 0;
4288
4289         for (i = 0; i < cp->ctx_blks; i++) {
4290                 int j;
4291                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4292                 u32 val;
4293
4294                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
4295
4296                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4297                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4298                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4299                         (u64) cp->ctx_arr[i].mapping >> 32);
4300                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4301                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4302                 for (j = 0; j < 10; j++) {
4303
4304                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4305                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4306                                 break;
4307                         udelay(5);
4308                 }
4309                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4310                         ret = -EBUSY;
4311                         break;
4312                 }
4313         }
4314         return ret;
4315 }
4316
4317 static void cnic_free_irq(struct cnic_dev *dev)
4318 {
4319         struct cnic_local *cp = dev->cnic_priv;
4320         struct cnic_eth_dev *ethdev = cp->ethdev;
4321
4322         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4323                 cp->disable_int_sync(dev);
4324                 tasklet_kill(&cp->cnic_irq_task);
4325                 free_irq(ethdev->irq_arr[0].vector, dev);
4326         }
4327 }
4328
4329 static int cnic_request_irq(struct cnic_dev *dev)
4330 {
4331         struct cnic_local *cp = dev->cnic_priv;
4332         struct cnic_eth_dev *ethdev = cp->ethdev;
4333         int err;
4334
4335         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4336         if (err)
4337                 tasklet_disable(&cp->cnic_irq_task);
4338
4339         return err;
4340 }
4341
4342 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4343 {
4344         struct cnic_local *cp = dev->cnic_priv;
4345         struct cnic_eth_dev *ethdev = cp->ethdev;
4346
4347         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4348                 int err, i = 0;
4349                 int sblk_num = cp->status_blk_num;
4350                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4351                            BNX2_HC_SB_CONFIG_1;
4352
4353                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4354
4355                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4356                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4357                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4358
4359                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4360                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4361                              (unsigned long) dev);
4362                 err = cnic_request_irq(dev);
4363                 if (err)
4364                         return err;
4365
4366                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4367                        i < 10) {
4368                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4369                                 1 << (11 + sblk_num));
4370                         udelay(10);
4371                         i++;
4372                         barrier();
4373                 }
4374                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4375                         cnic_free_irq(dev);
4376                         goto failed;
4377                 }
4378
4379         } else {
4380                 struct status_block *sblk = cp->status_blk.gen;
4381                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4382                 int i = 0;
4383
4384                 while (sblk->status_completion_producer_index && i < 10) {
4385                         CNIC_WR(dev, BNX2_HC_COMMAND,
4386                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4387                         udelay(10);
4388                         i++;
4389                         barrier();
4390                 }
4391                 if (sblk->status_completion_producer_index)
4392                         goto failed;
4393
4394         }
4395         return 0;
4396
4397 failed:
4398         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4399         return -EBUSY;
4400 }
4401
4402 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4403 {
4404         struct cnic_local *cp = dev->cnic_priv;
4405         struct cnic_eth_dev *ethdev = cp->ethdev;
4406
4407         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4408                 return;
4409
4410         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4411                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4412 }
4413
4414 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4415 {
4416         struct cnic_local *cp = dev->cnic_priv;
4417         struct cnic_eth_dev *ethdev = cp->ethdev;
4418
4419         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4420                 return;
4421
4422         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4423                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4424         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4425         synchronize_irq(ethdev->irq_arr[0].vector);
4426 }
4427
4428 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4429 {
4430         struct cnic_local *cp = dev->cnic_priv;
4431         struct cnic_eth_dev *ethdev = cp->ethdev;
4432         struct cnic_uio_dev *udev = cp->udev;
4433         u32 cid_addr, tx_cid, sb_id;
4434         u32 val, offset0, offset1, offset2, offset3;
4435         int i;
4436         struct tx_bd *txbd;
4437         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4438         struct status_block *s_blk = cp->status_blk.gen;
4439
4440         sb_id = cp->status_blk_num;
4441         tx_cid = 20;
4442         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4443         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4444                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4445
4446                 tx_cid = TX_TSS_CID + sb_id - 1;
4447                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4448                         (TX_TSS_CID << 7));
4449                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4450         }
4451         cp->tx_cons = *cp->tx_cons_ptr;
4452
4453         cid_addr = GET_CID_ADDR(tx_cid);
4454         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
4455                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4456
4457                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4458                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4459
4460                 offset0 = BNX2_L2CTX_TYPE_XI;
4461                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4462                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4463                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4464         } else {
4465                 cnic_init_context(dev, tx_cid);
4466                 cnic_init_context(dev, tx_cid + 1);
4467
4468                 offset0 = BNX2_L2CTX_TYPE;
4469                 offset1 = BNX2_L2CTX_CMD_TYPE;
4470                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4471                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4472         }
4473         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4474         cnic_ctx_wr(dev, cid_addr, offset0, val);
4475
4476         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4477         cnic_ctx_wr(dev, cid_addr, offset1, val);
4478
4479         txbd = udev->l2_ring;
4480
4481         buf_map = udev->l2_buf_map;
4482         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
4483                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4484                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4485         }
4486         val = (u64) ring_map >> 32;
4487         cnic_ctx_wr(dev, cid_addr, offset2, val);
4488         txbd->tx_bd_haddr_hi = val;
4489
4490         val = (u64) ring_map & 0xffffffff;
4491         cnic_ctx_wr(dev, cid_addr, offset3, val);
4492         txbd->tx_bd_haddr_lo = val;
4493 }
4494
4495 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4496 {
4497         struct cnic_local *cp = dev->cnic_priv;
4498         struct cnic_eth_dev *ethdev = cp->ethdev;
4499         struct cnic_uio_dev *udev = cp->udev;
4500         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4501         int i;
4502         struct rx_bd *rxbd;
4503         struct status_block *s_blk = cp->status_blk.gen;
4504         dma_addr_t ring_map = udev->l2_ring_map;
4505
4506         sb_id = cp->status_blk_num;
4507         cnic_init_context(dev, 2);
4508         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4509         coal_reg = BNX2_HC_COMMAND;
4510         coal_val = CNIC_RD(dev, coal_reg);
4511         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4512                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4513
4514                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4515                 coal_reg = BNX2_HC_COALESCE_NOW;
4516                 coal_val = 1 << (11 + sb_id);
4517         }
4518         i = 0;
4519         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4520                 CNIC_WR(dev, coal_reg, coal_val);
4521                 udelay(10);
4522                 i++;
4523                 barrier();
4524         }
4525         cp->rx_cons = *cp->rx_cons_ptr;
4526
4527         cid_addr = GET_CID_ADDR(2);
4528         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4529               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4530         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4531
4532         if (sb_id == 0)
4533                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4534         else
4535                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4536         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4537
4538         rxbd = udev->l2_ring + BCM_PAGE_SIZE;
4539         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
4540                 dma_addr_t buf_map;
4541                 int n = (i % cp->l2_rx_ring_size) + 1;
4542
4543                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4544                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4545                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4546                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4547                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4548         }
4549         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4550         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4551         rxbd->rx_bd_haddr_hi = val;
4552
4553         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4554         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4555         rxbd->rx_bd_haddr_lo = val;
4556
4557         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4558         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4559 }
4560
4561 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4562 {
4563         struct kwqe *wqes[1], l2kwqe;
4564
4565         memset(&l2kwqe, 0, sizeof(l2kwqe));
4566         wqes[0] = &l2kwqe;
4567         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4568                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4569                                KWQE_OPCODE_SHIFT) | 2;
4570         dev->submit_kwqes(dev, wqes, 1);
4571 }
4572
4573 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4574 {
4575         struct cnic_local *cp = dev->cnic_priv;
4576         u32 val;
4577
4578         val = cp->func << 2;
4579
4580         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4581
4582         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4583                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4584         dev->mac_addr[0] = (u8) (val >> 8);
4585         dev->mac_addr[1] = (u8) val;
4586
4587         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4588
4589         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4590                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4591         dev->mac_addr[2] = (u8) (val >> 24);
4592         dev->mac_addr[3] = (u8) (val >> 16);
4593         dev->mac_addr[4] = (u8) (val >> 8);
4594         dev->mac_addr[5] = (u8) val;
4595
4596         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4597
4598         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4599         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4600                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4601
4602         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4603         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4604         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4605 }
4606
4607 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4608 {
4609         struct cnic_local *cp = dev->cnic_priv;
4610         struct cnic_eth_dev *ethdev = cp->ethdev;
4611         struct status_block *sblk = cp->status_blk.gen;
4612         u32 val, kcq_cid_addr, kwq_cid_addr;
4613         int err;
4614
4615         cnic_set_bnx2_mac(dev);
4616
4617         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4618         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4619         if (BCM_PAGE_BITS > 12)
4620                 val |= (12 - 8)  << 4;
4621         else
4622                 val |= (BCM_PAGE_BITS - 8)  << 4;
4623
4624         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4625
4626         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4627         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4628         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4629
4630         err = cnic_setup_5709_context(dev, 1);
4631         if (err)
4632                 return err;
4633
4634         cnic_init_context(dev, KWQ_CID);
4635         cnic_init_context(dev, KCQ_CID);
4636
4637         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4638         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4639
4640         cp->max_kwq_idx = MAX_KWQ_IDX;
4641         cp->kwq_prod_idx = 0;
4642         cp->kwq_con_idx = 0;
4643         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4644
4645         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
4646                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4647         else
4648                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4649
4650         /* Initialize the kernel work queue context. */
4651         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4652               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4653         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4654
4655         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4656         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4657
4658         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4659         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4660
4661         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4662         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4663
4664         val = (u32) cp->kwq_info.pgtbl_map;
4665         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4666
4667         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4668         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4669
4670         cp->kcq1.sw_prod_idx = 0;
4671         cp->kcq1.hw_prod_idx_ptr =
4672                 (u16 *) &sblk->status_completion_producer_index;
4673
4674         cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
4675
4676         /* Initialize the kernel complete queue context. */
4677         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4678               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4679         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4680
4681         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4682         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4683
4684         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4685         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4686
4687         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4688         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4689
4690         val = (u32) cp->kcq1.dma.pgtbl_map;
4691         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4692
4693         cp->int_num = 0;
4694         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4695                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4696                 u32 sb_id = cp->status_blk_num;
4697                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4698
4699                 cp->kcq1.hw_prod_idx_ptr =
4700                         (u16 *) &msblk->status_completion_producer_index;
4701                 cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
4702                 cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
4703                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4704                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4705                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4706         }
4707
4708         /* Enable Commnad Scheduler notification when we write to the
4709          * host producer index of the kernel contexts. */
4710         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4711
4712         /* Enable Command Scheduler notification when we write to either
4713          * the Send Queue or Receive Queue producer indexes of the kernel
4714          * bypass contexts. */
4715         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4716         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4717
4718         /* Notify COM when the driver post an application buffer. */
4719         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4720
4721         /* Set the CP and COM doorbells.  These two processors polls the
4722          * doorbell for a non zero value before running.  This must be done
4723          * after setting up the kernel queue contexts. */
4724         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4725         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4726
4727         cnic_init_bnx2_tx_ring(dev);
4728         cnic_init_bnx2_rx_ring(dev);
4729
4730         err = cnic_init_bnx2_irq(dev);
4731         if (err) {
4732                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4733                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4734                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4735                 return err;
4736         }
4737
4738         return 0;
4739 }
4740
4741 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4742 {
4743         struct cnic_local *cp = dev->cnic_priv;
4744         struct cnic_eth_dev *ethdev = cp->ethdev;
4745         u32 start_offset = ethdev->ctx_tbl_offset;
4746         int i;
4747
4748         for (i = 0; i < cp->ctx_blks; i++) {
4749                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4750                 dma_addr_t map = ctx->mapping;
4751
4752                 if (cp->ctx_align) {
4753                         unsigned long mask = cp->ctx_align - 1;
4754
4755                         map = (map + mask) & ~mask;
4756                 }
4757
4758                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4759         }
4760 }
4761
4762 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4763 {
4764         struct cnic_local *cp = dev->cnic_priv;
4765         struct cnic_eth_dev *ethdev = cp->ethdev;
4766         int err = 0;
4767
4768         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4769                      (unsigned long) dev);
4770         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4771                 err = cnic_request_irq(dev);
4772
4773         return err;
4774 }
4775
4776 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4777                                                 u16 sb_id, u8 sb_index,
4778                                                 u8 disable)
4779 {
4780
4781         u32 addr = BAR_CSTRORM_INTMEM +
4782                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4783                         offsetof(struct hc_status_block_data_e1x, index_data) +
4784                         sizeof(struct hc_index_data)*sb_index +
4785                         offsetof(struct hc_index_data, flags);
4786         u16 flags = CNIC_RD16(dev, addr);
4787         /* clear and set */
4788         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4789         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4790                   HC_INDEX_DATA_HC_ENABLED);
4791         CNIC_WR16(dev, addr, flags);
4792 }
4793
4794 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4795 {
4796         struct cnic_local *cp = dev->cnic_priv;
4797         u8 sb_id = cp->status_blk_num;
4798
4799         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4800                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4801                         offsetof(struct hc_status_block_data_e1x, index_data) +
4802                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4803                         offsetof(struct hc_index_data, timeout), 64 / 4);
4804         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4805 }
4806
4807 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4808 {
4809 }
4810
4811 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4812                                     struct client_init_ramrod_data *data)
4813 {
4814         struct cnic_local *cp = dev->cnic_priv;
4815         struct cnic_uio_dev *udev = cp->udev;
4816         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4817         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4818         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4819         int i;
4820         u32 cli = cp->ethdev->iscsi_l2_client_id;
4821         u32 val;
4822
4823         memset(txbd, 0, BCM_PAGE_SIZE);
4824
4825         buf_map = udev->l2_buf_map;
4826         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4827                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4828                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4829
4830                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4831                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4832                 reg_bd->addr_hi = start_bd->addr_hi;
4833                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4834                 start_bd->nbytes = cpu_to_le16(0x10);
4835                 start_bd->nbd = cpu_to_le16(3);
4836                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4837                 start_bd->general_data = (UNICAST_ADDRESS <<
4838                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
4839                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4840
4841         }
4842
4843         val = (u64) ring_map >> 32;
4844         txbd->next_bd.addr_hi = cpu_to_le32(val);
4845
4846         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4847
4848         val = (u64) ring_map & 0xffffffff;
4849         txbd->next_bd.addr_lo = cpu_to_le32(val);
4850
4851         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4852
4853         /* Other ramrod params */
4854         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4855         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4856
4857         /* reset xstorm per client statistics */
4858         if (cli < MAX_STAT_COUNTER_ID) {
4859                 data->general.statistics_zero_flg = 1;
4860                 data->general.statistics_en_flg = 1;
4861                 data->general.statistics_counter_id = cli;
4862         }
4863
4864         cp->tx_cons_ptr =
4865                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4866 }
4867
4868 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4869                                     struct client_init_ramrod_data *data)
4870 {
4871         struct cnic_local *cp = dev->cnic_priv;
4872         struct cnic_uio_dev *udev = cp->udev;
4873         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4874                                 BCM_PAGE_SIZE);
4875         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4876                                 (udev->l2_ring + (2 * BCM_PAGE_SIZE));
4877         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4878         int i;
4879         u32 cli = cp->ethdev->iscsi_l2_client_id;
4880         int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4881         u32 val;
4882         dma_addr_t ring_map = udev->l2_ring_map;
4883
4884         /* General data */
4885         data->general.client_id = cli;
4886         data->general.activate_flg = 1;
4887         data->general.sp_client_id = cli;
4888         data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4889         data->general.func_id = cp->pfid;
4890
4891         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4892                 dma_addr_t buf_map;
4893                 int n = (i % cp->l2_rx_ring_size) + 1;
4894
4895                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4896                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4897                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4898         }
4899
4900         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4901         rxbd->addr_hi = cpu_to_le32(val);
4902         data->rx.bd_page_base.hi = cpu_to_le32(val);
4903
4904         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4905         rxbd->addr_lo = cpu_to_le32(val);
4906         data->rx.bd_page_base.lo = cpu_to_le32(val);
4907
4908         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4909         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4910         rxcqe->addr_hi = cpu_to_le32(val);
4911         data->rx.cqe_page_base.hi = cpu_to_le32(val);
4912
4913         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4914         rxcqe->addr_lo = cpu_to_le32(val);
4915         data->rx.cqe_page_base.lo = cpu_to_le32(val);
4916
4917         /* Other ramrod params */
4918         data->rx.client_qzone_id = cl_qzone_id;
4919         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
4920         data->rx.status_block_id = BNX2X_DEF_SB_ID;
4921
4922         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4923
4924         data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
4925         data->rx.outer_vlan_removal_enable_flg = 1;
4926         data->rx.silent_vlan_removal_flg = 1;
4927         data->rx.silent_vlan_value = 0;
4928         data->rx.silent_vlan_mask = 0xffff;
4929
4930         cp->rx_cons_ptr =
4931                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4932         cp->rx_cons = *cp->rx_cons_ptr;
4933 }
4934
4935 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
4936 {
4937         struct cnic_local *cp = dev->cnic_priv;
4938         u32 pfid = cp->pfid;
4939
4940         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4941                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4942         cp->kcq1.sw_prod_idx = 0;
4943
4944         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4945                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4946
4947                 cp->kcq1.hw_prod_idx_ptr =
4948                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4949                 cp->kcq1.status_idx_ptr =
4950                         &sb->sb.running_index[SM_RX_ID];
4951         } else {
4952                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
4953
4954                 cp->kcq1.hw_prod_idx_ptr =
4955                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4956                 cp->kcq1.status_idx_ptr =
4957                         &sb->sb.running_index[SM_RX_ID];
4958         }
4959
4960         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4961                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4962
4963                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
4964                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
4965                 cp->kcq2.sw_prod_idx = 0;
4966                 cp->kcq2.hw_prod_idx_ptr =
4967                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
4968                 cp->kcq2.status_idx_ptr =
4969                         &sb->sb.running_index[SM_RX_ID];
4970         }
4971 }
4972
4973 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4974 {
4975         struct cnic_local *cp = dev->cnic_priv;
4976         struct cnic_eth_dev *ethdev = cp->ethdev;
4977         int func = CNIC_FUNC(cp), ret;
4978         u32 pfid;
4979
4980         dev->stats_addr = ethdev->addr_drv_info_to_mcp;
4981         cp->port_mode = CHIP_PORT_MODE_NONE;
4982
4983         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4984                 u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);
4985
4986                 if (!(val & 1))
4987                         val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN);
4988                 else
4989                         val = (val >> 1) & 1;
4990
4991                 if (val) {
4992                         cp->port_mode = CHIP_4_PORT_MODE;
4993                         cp->pfid = func >> 1;
4994                 } else {
4995                         cp->port_mode = CHIP_2_PORT_MODE;
4996                         cp->pfid = func & 0x6;
4997                 }
4998         } else {
4999                 cp->pfid = func;
5000         }
5001         pfid = cp->pfid;
5002
5003         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5004                                cp->iscsi_start_cid, 0);
5005
5006         if (ret)
5007                 return -ENOMEM;
5008
5009         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
5010                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5011                                         cp->fcoe_start_cid, 0);
5012
5013                 if (ret)
5014                         return -ENOMEM;
5015         }
5016
5017         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
5018
5019         cnic_init_bnx2x_kcq(dev);
5020
5021         /* Only 1 EQ */
5022         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5023         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5024                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5025         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5026                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5027                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5028         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5029                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5030                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5031         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5032                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5033                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5034         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5035                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5036                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5037         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5038                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5039         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5040                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5041         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5042                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5043                 HC_INDEX_ISCSI_EQ_CONS);
5044
5045         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5046                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5047                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
5048         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5049                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5050                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
5051
5052         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
5053                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
5054
5055         cnic_setup_bnx2x_context(dev);
5056
5057         ret = cnic_init_bnx2x_irq(dev);
5058         if (ret)
5059                 return ret;
5060
5061         return 0;
5062 }
5063
5064 static void cnic_init_rings(struct cnic_dev *dev)
5065 {
5066         struct cnic_local *cp = dev->cnic_priv;
5067         struct cnic_uio_dev *udev = cp->udev;
5068
5069         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5070                 return;
5071
5072         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5073                 cnic_init_bnx2_tx_ring(dev);
5074                 cnic_init_bnx2_rx_ring(dev);
5075                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5076         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5077                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5078                 u32 cid = cp->ethdev->iscsi_l2_cid;
5079                 u32 cl_qzone_id;
5080                 struct client_init_ramrod_data *data;
5081                 union l5cm_specific_data l5_data;
5082                 struct ustorm_eth_rx_producers rx_prods = {0};
5083                 u32 off, i, *cid_ptr;
5084
5085                 rx_prods.bd_prod = 0;
5086                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
5087                 barrier();
5088
5089                 cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
5090
5091                 off = BAR_USTRORM_INTMEM +
5092                         (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) ?
5093                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
5094                          USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
5095
5096                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5097                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5098
5099                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5100
5101                 data = udev->l2_buf;
5102                 cid_ptr = udev->l2_buf + 12;
5103
5104                 memset(data, 0, sizeof(*data));
5105
5106                 cnic_init_bnx2x_tx_ring(dev, data);
5107                 cnic_init_bnx2x_rx_ring(dev, data);
5108
5109                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5110                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5111
5112                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5113
5114                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5115                         cid, ETH_CONNECTION_TYPE, &l5_data);
5116
5117                 i = 0;
5118                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5119                        ++i < 10)
5120                         msleep(1);
5121
5122                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5123                         netdev_err(dev->netdev,
5124                                 "iSCSI CLIENT_SETUP did not complete\n");
5125                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5126                 cnic_ring_ctl(dev, cid, cli, 1);
5127                 *cid_ptr = cid;
5128         }
5129 }
5130
5131 static void cnic_shutdown_rings(struct cnic_dev *dev)
5132 {
5133         struct cnic_local *cp = dev->cnic_priv;
5134         struct cnic_uio_dev *udev = cp->udev;
5135         void *rx_ring;
5136
5137         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5138                 return;
5139
5140         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5141                 cnic_shutdown_bnx2_rx_ring(dev);
5142         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5143                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5144                 u32 cid = cp->ethdev->iscsi_l2_cid;
5145                 union l5cm_specific_data l5_data;
5146                 int i;
5147
5148                 cnic_ring_ctl(dev, cid, cli, 0);
5149
5150                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5151
5152                 l5_data.phy_address.lo = cli;
5153                 l5_data.phy_address.hi = 0;
5154                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5155                         cid, ETH_CONNECTION_TYPE, &l5_data);
5156                 i = 0;
5157                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5158                        ++i < 10)
5159                         msleep(1);
5160
5161                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5162                         netdev_err(dev->netdev,
5163                                 "iSCSI CLIENT_HALT did not complete\n");
5164                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5165
5166                 memset(&l5_data, 0, sizeof(l5_data));
5167                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5168                         cid, NONE_CONNECTION_TYPE, &l5_data);
5169                 msleep(10);
5170         }
5171         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5172         rx_ring = udev->l2_ring + BCM_PAGE_SIZE;
5173         memset(rx_ring, 0, BCM_PAGE_SIZE);
5174 }
5175
5176 static int cnic_register_netdev(struct cnic_dev *dev)
5177 {
5178         struct cnic_local *cp = dev->cnic_priv;
5179         struct cnic_eth_dev *ethdev = cp->ethdev;
5180         int err;
5181
5182         if (!ethdev)
5183                 return -ENODEV;
5184
5185         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5186                 return 0;
5187
5188         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5189         if (err)
5190                 netdev_err(dev->netdev, "register_cnic failed\n");
5191
5192         return err;
5193 }
5194
5195 static void cnic_unregister_netdev(struct cnic_dev *dev)
5196 {
5197         struct cnic_local *cp = dev->cnic_priv;
5198         struct cnic_eth_dev *ethdev = cp->ethdev;
5199
5200         if (!ethdev)
5201                 return;
5202
5203         ethdev->drv_unregister_cnic(dev->netdev);
5204 }
5205
5206 static int cnic_start_hw(struct cnic_dev *dev)
5207 {
5208         struct cnic_local *cp = dev->cnic_priv;
5209         struct cnic_eth_dev *ethdev = cp->ethdev;
5210         int err;
5211
5212         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5213                 return -EALREADY;
5214
5215         dev->regview = ethdev->io_base;
5216         pci_dev_get(dev->pcidev);
5217         cp->func = PCI_FUNC(dev->pcidev->devfn);
5218         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5219         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5220
5221         err = cp->alloc_resc(dev);
5222         if (err) {
5223                 netdev_err(dev->netdev, "allocate resource failure\n");
5224                 goto err1;
5225         }
5226
5227         err = cp->start_hw(dev);
5228         if (err)
5229                 goto err1;
5230
5231         err = cnic_cm_open(dev);
5232         if (err)
5233                 goto err1;
5234
5235         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5236
5237         cp->enable_int(dev);
5238
5239         return 0;
5240
5241 err1:
5242         cp->free_resc(dev);
5243         pci_dev_put(dev->pcidev);
5244         return err;
5245 }
5246
5247 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5248 {
5249         cnic_disable_bnx2_int_sync(dev);
5250
5251         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5252         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5253
5254         cnic_init_context(dev, KWQ_CID);
5255         cnic_init_context(dev, KCQ_CID);
5256
5257         cnic_setup_5709_context(dev, 0);
5258         cnic_free_irq(dev);
5259
5260         cnic_free_resc(dev);
5261 }
5262
5263
5264 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5265 {
5266         struct cnic_local *cp = dev->cnic_priv;
5267
5268         cnic_free_irq(dev);
5269         *cp->kcq1.hw_prod_idx_ptr = 0;
5270         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5271                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5272         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5273         cnic_free_resc(dev);
5274 }
5275
5276 static void cnic_stop_hw(struct cnic_dev *dev)
5277 {
5278         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5279                 struct cnic_local *cp = dev->cnic_priv;
5280                 int i = 0;
5281
5282                 /* Need to wait for the ring shutdown event to complete
5283                  * before clearing the CNIC_UP flag.
5284                  */
5285                 while (cp->udev->uio_dev != -1 && i < 15) {
5286                         msleep(100);
5287                         i++;
5288                 }
5289                 cnic_shutdown_rings(dev);
5290                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5291                 RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5292                 synchronize_rcu();
5293                 cnic_cm_shutdown(dev);
5294                 cp->stop_hw(dev);
5295                 pci_dev_put(dev->pcidev);
5296         }
5297 }
5298
5299 static void cnic_free_dev(struct cnic_dev *dev)
5300 {
5301         int i = 0;
5302
5303         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5304                 msleep(100);
5305                 i++;
5306         }
5307         if (atomic_read(&dev->ref_count) != 0)
5308                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5309
5310         netdev_info(dev->netdev, "Removed CNIC device\n");
5311         dev_put(dev->netdev);
5312         kfree(dev);
5313 }
5314
5315 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5316                                        struct pci_dev *pdev)
5317 {
5318         struct cnic_dev *cdev;
5319         struct cnic_local *cp;
5320         int alloc_size;
5321
5322         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5323
5324         cdev = kzalloc(alloc_size , GFP_KERNEL);
5325         if (cdev == NULL) {
5326                 netdev_err(dev, "allocate dev struct failure\n");
5327                 return NULL;
5328         }
5329
5330         cdev->netdev = dev;
5331         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5332         cdev->register_device = cnic_register_device;
5333         cdev->unregister_device = cnic_unregister_device;
5334         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5335
5336         cp = cdev->cnic_priv;
5337         cp->dev = cdev;
5338         cp->l2_single_buf_size = 0x400;
5339         cp->l2_rx_ring_size = 3;
5340
5341         spin_lock_init(&cp->cnic_ulp_lock);
5342
5343         netdev_info(dev, "Added CNIC device\n");
5344
5345         return cdev;
5346 }
5347
5348 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5349 {
5350         struct pci_dev *pdev;
5351         struct cnic_dev *cdev;
5352         struct cnic_local *cp;
5353         struct cnic_eth_dev *ethdev = NULL;
5354         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5355
5356         probe = symbol_get(bnx2_cnic_probe);
5357         if (probe) {
5358                 ethdev = (*probe)(dev);
5359                 symbol_put(bnx2_cnic_probe);
5360         }
5361         if (!ethdev)
5362                 return NULL;
5363
5364         pdev = ethdev->pdev;
5365         if (!pdev)
5366                 return NULL;
5367
5368         dev_hold(dev);
5369         pci_dev_get(pdev);
5370         if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5371              pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5372             (pdev->revision < 0x10)) {
5373                 pci_dev_put(pdev);
5374                 goto cnic_err;
5375         }
5376         pci_dev_put(pdev);
5377
5378         cdev = cnic_alloc_dev(dev, pdev);
5379         if (cdev == NULL)
5380                 goto cnic_err;
5381
5382         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5383         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5384
5385         cp = cdev->cnic_priv;
5386         cp->ethdev = ethdev;
5387         cdev->pcidev = pdev;
5388         cp->chip_id = ethdev->chip_id;
5389
5390         cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5391
5392         cp->cnic_ops = &cnic_bnx2_ops;
5393         cp->start_hw = cnic_start_bnx2_hw;
5394         cp->stop_hw = cnic_stop_bnx2_hw;
5395         cp->setup_pgtbl = cnic_setup_page_tbl;
5396         cp->alloc_resc = cnic_alloc_bnx2_resc;
5397         cp->free_resc = cnic_free_resc;
5398         cp->start_cm = cnic_cm_init_bnx2_hw;
5399         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5400         cp->enable_int = cnic_enable_bnx2_int;
5401         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5402         cp->close_conn = cnic_close_bnx2_conn;
5403         return cdev;
5404
5405 cnic_err:
5406         dev_put(dev);
5407         return NULL;
5408 }
5409
5410 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5411 {
5412         struct pci_dev *pdev;
5413         struct cnic_dev *cdev;
5414         struct cnic_local *cp;
5415         struct cnic_eth_dev *ethdev = NULL;
5416         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5417
5418         probe = symbol_get(bnx2x_cnic_probe);
5419         if (probe) {
5420                 ethdev = (*probe)(dev);
5421                 symbol_put(bnx2x_cnic_probe);
5422         }
5423         if (!ethdev)
5424                 return NULL;
5425
5426         pdev = ethdev->pdev;
5427         if (!pdev)
5428                 return NULL;
5429
5430         dev_hold(dev);
5431         cdev = cnic_alloc_dev(dev, pdev);
5432         if (cdev == NULL) {
5433                 dev_put(dev);
5434                 return NULL;
5435         }
5436
5437         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5438         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5439
5440         cp = cdev->cnic_priv;
5441         cp->ethdev = ethdev;
5442         cdev->pcidev = pdev;
5443         cp->chip_id = ethdev->chip_id;
5444
5445         cdev->stats_addr = ethdev->addr_drv_info_to_mcp;
5446
5447         if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5448                 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5449         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
5450             !(ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE))
5451                 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5452
5453         if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
5454                 cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
5455
5456         memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);
5457
5458         cp->cnic_ops = &cnic_bnx2x_ops;
5459         cp->start_hw = cnic_start_bnx2x_hw;
5460         cp->stop_hw = cnic_stop_bnx2x_hw;
5461         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5462         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5463         cp->free_resc = cnic_free_resc;
5464         cp->start_cm = cnic_cm_init_bnx2x_hw;
5465         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5466         cp->enable_int = cnic_enable_bnx2x_int;
5467         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5468         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
5469                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5470         else
5471                 cp->ack_int = cnic_ack_bnx2x_msix;
5472         cp->close_conn = cnic_close_bnx2x_conn;
5473         return cdev;
5474 }
5475
5476 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5477 {
5478         struct ethtool_drvinfo drvinfo;
5479         struct cnic_dev *cdev = NULL;
5480
5481         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5482                 memset(&drvinfo, 0, sizeof(drvinfo));
5483                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5484
5485                 if (!strcmp(drvinfo.driver, "bnx2"))
5486                         cdev = init_bnx2_cnic(dev);
5487                 if (!strcmp(drvinfo.driver, "bnx2x"))
5488                         cdev = init_bnx2x_cnic(dev);
5489                 if (cdev) {
5490                         write_lock(&cnic_dev_lock);
5491                         list_add(&cdev->list, &cnic_dev_list);
5492                         write_unlock(&cnic_dev_lock);
5493                 }
5494         }
5495         return cdev;
5496 }
5497
5498 static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
5499                               u16 vlan_id)
5500 {
5501         int if_type;
5502
5503         rcu_read_lock();
5504         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5505                 struct cnic_ulp_ops *ulp_ops;
5506                 void *ctx;
5507
5508                 ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
5509                 if (!ulp_ops || !ulp_ops->indicate_netevent)
5510                         continue;
5511
5512                 ctx = cp->ulp_handle[if_type];
5513
5514                 ulp_ops->indicate_netevent(ctx, event, vlan_id);
5515         }
5516         rcu_read_unlock();
5517 }
5518
5519 /**
5520  * netdev event handler
5521  */
5522 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5523                                                          void *ptr)
5524 {
5525         struct net_device *netdev = ptr;
5526         struct cnic_dev *dev;
5527         int new_dev = 0;
5528
5529         dev = cnic_from_netdev(netdev);
5530
5531         if (!dev && (event == NETDEV_REGISTER || netif_running(netdev))) {
5532                 /* Check for the hot-plug device */
5533                 dev = is_cnic_dev(netdev);
5534                 if (dev) {
5535                         new_dev = 1;
5536                         cnic_hold(dev);
5537                 }
5538         }
5539         if (dev) {
5540                 struct cnic_local *cp = dev->cnic_priv;
5541
5542                 if (new_dev)
5543                         cnic_ulp_init(dev);
5544                 else if (event == NETDEV_UNREGISTER)
5545                         cnic_ulp_exit(dev);
5546
5547                 if (event == NETDEV_UP || (new_dev && netif_running(netdev))) {
5548                         if (cnic_register_netdev(dev) != 0) {
5549                                 cnic_put(dev);
5550                                 goto done;
5551                         }
5552                         if (!cnic_start_hw(dev))
5553                                 cnic_ulp_start(dev);
5554                 }
5555
5556                 cnic_rcv_netevent(cp, event, 0);
5557
5558                 if (event == NETDEV_GOING_DOWN) {
5559                         cnic_ulp_stop(dev);
5560                         cnic_stop_hw(dev);
5561                         cnic_unregister_netdev(dev);
5562                 } else if (event == NETDEV_UNREGISTER) {
5563                         write_lock(&cnic_dev_lock);
5564                         list_del_init(&dev->list);
5565                         write_unlock(&cnic_dev_lock);
5566
5567                         cnic_put(dev);
5568                         cnic_free_dev(dev);
5569                         goto done;
5570                 }
5571                 cnic_put(dev);
5572         } else {
5573                 struct net_device *realdev;
5574                 u16 vid;
5575
5576                 vid = cnic_get_vlan(netdev, &realdev);
5577                 if (realdev) {
5578                         dev = cnic_from_netdev(realdev);
5579                         if (dev) {
5580                                 vid |= VLAN_TAG_PRESENT;
5581                                 cnic_rcv_netevent(dev->cnic_priv, event, vid);
5582                                 cnic_put(dev);
5583                         }
5584                 }
5585         }
5586 done:
5587         return NOTIFY_DONE;
5588 }
5589
5590 static struct notifier_block cnic_netdev_notifier = {
5591         .notifier_call = cnic_netdev_event
5592 };
5593
5594 static void cnic_release(void)
5595 {
5596         struct cnic_dev *dev;
5597         struct cnic_uio_dev *udev;
5598
5599         while (!list_empty(&cnic_dev_list)) {
5600                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
5601                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5602                         cnic_ulp_stop(dev);
5603                         cnic_stop_hw(dev);
5604                 }
5605
5606                 cnic_ulp_exit(dev);
5607                 cnic_unregister_netdev(dev);
5608                 list_del_init(&dev->list);
5609                 cnic_free_dev(dev);
5610         }
5611         while (!list_empty(&cnic_udev_list)) {
5612                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5613                                   list);
5614                 cnic_free_uio(udev);
5615         }
5616 }
5617
5618 static int __init cnic_init(void)
5619 {
5620         int rc = 0;
5621
5622         pr_info("%s", version);
5623
5624         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5625         if (rc) {
5626                 cnic_release();
5627                 return rc;
5628         }
5629
5630         cnic_wq = create_singlethread_workqueue("cnic_wq");
5631         if (!cnic_wq) {
5632                 cnic_release();
5633                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5634                 return -ENOMEM;
5635         }
5636
5637         return 0;
5638 }
5639
5640 static void __exit cnic_exit(void)
5641 {
5642         unregister_netdevice_notifier(&cnic_netdev_notifier);
5643         cnic_release();
5644         destroy_workqueue(cnic_wq);
5645 }
5646
5647 module_init(cnic_init);
5648 module_exit(cnic_exit);