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 #define BCM_CNIC        1
  44 #include "cnic_if.h"
  45 #include "bnx2.h"
  46 #include "bnx2x/bnx2x.h"
  47 #include "bnx2x/bnx2x_reg.h"
  48 #include "bnx2x/bnx2x_fw_defs.h"
  49 #include "bnx2x/bnx2x_hsi.h"
  50 #include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
  51 #include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
  52 #include "../../../scsi/bnx2fc/bnx2fc_constants.h"
  53 #include "cnic.h"
  54 #include "cnic_defs.h"
  55
  56 #define CNIC_MODULE_NAME        "cnic"
  57
  58 static char version[] =
  59         "Broadcom NetXtreme II CNIC Driver " CNIC_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  60
  61 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  62               "Chen (zongxi@broadcom.com");
  63 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
  64 MODULE_LICENSE("GPL");
  65 MODULE_VERSION(CNIC_MODULE_VERSION);
  66
  67 /* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
  68 static LIST_HEAD(cnic_dev_list);
  69 static LIST_HEAD(cnic_udev_list);
  70 static DEFINE_RWLOCK(cnic_dev_lock);
  71 static DEFINE_MUTEX(cnic_lock);
  72
  73 static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  74
  75 /* helper function, assuming cnic_lock is held */
  76 static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
  77 {
  78         return rcu_dereference_protected(cnic_ulp_tbl[type],
  79                                          lockdep_is_held(&cnic_lock));
  80 }
  81
  82 static int cnic_service_bnx2(void *, void *);
  83 static int cnic_service_bnx2x(void *, void *);
  84 static int cnic_ctl(void *, struct cnic_ctl_info *);
  85
  86 static struct cnic_ops cnic_bnx2_ops = {
  87         .cnic_owner     = THIS_MODULE,
  88         .cnic_handler   = cnic_service_bnx2,
  89         .cnic_ctl       = cnic_ctl,
  90 };
  91
  92 static struct cnic_ops cnic_bnx2x_ops = {
  93         .cnic_owner     = THIS_MODULE,
  94         .cnic_handler   = cnic_service_bnx2x,
  95         .cnic_ctl       = cnic_ctl,
  96 };
  97
  98 static struct workqueue_struct *cnic_wq;
  99
 100 static void cnic_shutdown_rings(struct cnic_dev *);
 101 static void cnic_init_rings(struct cnic_dev *);
 102 static int cnic_cm_set_pg(struct cnic_sock *);
 103
 104 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
 105 {
 106         struct cnic_uio_dev *udev = uinfo->priv;
 107         struct cnic_dev *dev;
 108
 109         if (!capable(CAP_NET_ADMIN))
 110                 return -EPERM;
 111
 112         if (udev->uio_dev != -1)
 113                 return -EBUSY;
 114
 115         rtnl_lock();
 116         dev = udev->dev;
 117
 118         if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 119                 rtnl_unlock();
 120                 return -ENODEV;
 121         }
 122
 123         udev->uio_dev = iminor(inode);
 124
 125         cnic_shutdown_rings(dev);
 126         cnic_init_rings(dev);
 127         rtnl_unlock();
 128
 129         return 0;
 130 }
 131
 132 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 133 {
 134         struct cnic_uio_dev *udev = uinfo->priv;
 135
 136         udev->uio_dev = -1;
 137         return 0;
 138 }
 139
 140 static inline void cnic_hold(struct cnic_dev *dev)
 141 {
 142         atomic_inc(&dev->ref_count);
 143 }
 144
 145 static inline void cnic_put(struct cnic_dev *dev)
 146 {
 147         atomic_dec(&dev->ref_count);
 148 }
 149
 150 static inline void csk_hold(struct cnic_sock *csk)
 151 {
 152         atomic_inc(&csk->ref_count);
 153 }
 154
 155 static inline void csk_put(struct cnic_sock *csk)
 156 {
 157         atomic_dec(&csk->ref_count);
 158 }
 159
 160 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 161 {
 162         struct cnic_dev *cdev;
 163
 164         read_lock(&cnic_dev_lock);
 165         list_for_each_entry(cdev, &cnic_dev_list, list) {
 166                 if (netdev == cdev->netdev) {
 167                         cnic_hold(cdev);
 168                         read_unlock(&cnic_dev_lock);
 169                         return cdev;
 170                 }
 171         }
 172         read_unlock(&cnic_dev_lock);
 173         return NULL;
 174 }
 175
 176 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 177 {
 178         atomic_inc(&ulp_ops->ref_count);
 179 }
 180
 181 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 182 {
 183         atomic_dec(&ulp_ops->ref_count);
 184 }
 185
 186 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 187 {
 188         struct cnic_local *cp = dev->cnic_priv;
 189         struct cnic_eth_dev *ethdev = cp->ethdev;
 190         struct drv_ctl_info info;
 191         struct drv_ctl_io *io = &info.data.io;
 192
 193         info.cmd = DRV_CTL_CTX_WR_CMD;
 194         io->cid_addr = cid_addr;
 195         io->offset = off;
 196         io->data = val;
 197         ethdev->drv_ctl(dev->netdev, &info);
 198 }
 199
 200 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 201 {
 202         struct cnic_local *cp = dev->cnic_priv;
 203         struct cnic_eth_dev *ethdev = cp->ethdev;
 204         struct drv_ctl_info info;
 205         struct drv_ctl_io *io = &info.data.io;
 206
 207         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 208         io->offset = off;
 209         io->dma_addr = addr;
 210         ethdev->drv_ctl(dev->netdev, &info);
 211 }
 212
 213 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 214 {
 215         struct cnic_local *cp = dev->cnic_priv;
 216         struct cnic_eth_dev *ethdev = cp->ethdev;
 217         struct drv_ctl_info info;
 218         struct drv_ctl_l2_ring *ring = &info.data.ring;
 219
 220         if (start)
 221                 info.cmd = DRV_CTL_START_L2_CMD;
 222         else
 223                 info.cmd = DRV_CTL_STOP_L2_CMD;
 224
 225         ring->cid = cid;
 226         ring->client_id = cl_id;
 227         ethdev->drv_ctl(dev->netdev, &info);
 228 }
 229
 230 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 231 {
 232         struct cnic_local *cp = dev->cnic_priv;
 233         struct cnic_eth_dev *ethdev = cp->ethdev;
 234         struct drv_ctl_info info;
 235         struct drv_ctl_io *io = &info.data.io;
 236
 237         info.cmd = DRV_CTL_IO_WR_CMD;
 238         io->offset = off;
 239         io->data = val;
 240         ethdev->drv_ctl(dev->netdev, &info);
 241 }
 242
 243 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 244 {
 245         struct cnic_local *cp = dev->cnic_priv;
 246         struct cnic_eth_dev *ethdev = cp->ethdev;
 247         struct drv_ctl_info info;
 248         struct drv_ctl_io *io = &info.data.io;
 249
 250         info.cmd = DRV_CTL_IO_RD_CMD;
 251         io->offset = off;
 252         ethdev->drv_ctl(dev->netdev, &info);
 253         return io->data;
 254 }
 255
 256 static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg)
 257 {
 258         struct cnic_local *cp = dev->cnic_priv;
 259         struct cnic_eth_dev *ethdev = cp->ethdev;
 260         struct drv_ctl_info info;
 261         struct fcoe_capabilities *fcoe_cap =
 262                 &info.data.register_data.fcoe_features;
 263
 264         if (reg) {
 265                 info.cmd = DRV_CTL_ULP_REGISTER_CMD;
 266                 if (ulp_type == CNIC_ULP_FCOE && dev->fcoe_cap)
 267                         memcpy(fcoe_cap, dev->fcoe_cap, sizeof(*fcoe_cap));
 268         } else {
 269                 info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;
 270         }
 271
 272         info.data.ulp_type = ulp_type;
 273         ethdev->drv_ctl(dev->netdev, &info);
 274 }
 275
 276 static int cnic_in_use(struct cnic_sock *csk)
 277 {
 278         return test_bit(SK_F_INUSE, &csk->flags);
 279 }
 280
 281 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
 282 {
 283         struct cnic_local *cp = dev->cnic_priv;
 284         struct cnic_eth_dev *ethdev = cp->ethdev;
 285         struct drv_ctl_info info;
 286
 287         info.cmd = cmd;
 288         info.data.credit.credit_count = count;
 289         ethdev->drv_ctl(dev->netdev, &info);
 290 }
 291
 292 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 293 {
 294         u32 i;
 295
 296         if (!cp->ctx_tbl)
 297                 return -EINVAL;
 298
 299         for (i = 0; i < cp->max_cid_space; i++) {
 300                 if (cp->ctx_tbl[i].cid == cid) {
 301                         *l5_cid = i;
 302                         return 0;
 303                 }
 304         }
 305         return -EINVAL;
 306 }
 307
 308 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 309                            struct cnic_sock *csk)
 310 {
 311         struct iscsi_path path_req;
 312         char *buf = NULL;
 313         u16 len = 0;
 314         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 315         struct cnic_ulp_ops *ulp_ops;
 316         struct cnic_uio_dev *udev = cp->udev;
 317         int rc = 0, retry = 0;
 318
 319         if (!udev || udev->uio_dev == -1)
 320                 return -ENODEV;
 321
 322         if (csk) {
 323                 len = sizeof(path_req);
 324                 buf = (char *) &path_req;
 325                 memset(&path_req, 0, len);
 326
 327                 msg_type = ISCSI_KEVENT_PATH_REQ;
 328                 path_req.handle = (u64) csk->l5_cid;
 329                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 330                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 331                                sizeof(struct in6_addr));
 332                         path_req.ip_addr_len = 16;
 333                 } else {
 334                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 335                                sizeof(struct in_addr));
 336                         path_req.ip_addr_len = 4;
 337                 }
 338                 path_req.vlan_id = csk->vlan_id;
 339                 path_req.pmtu = csk->mtu;
 340         }
 341
 342         while (retry < 3) {
 343                 rc = 0;
 344                 rcu_read_lock();
 345                 ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
 346                 if (ulp_ops)
 347                         rc = ulp_ops->iscsi_nl_send_msg(
 348                                 cp->ulp_handle[CNIC_ULP_ISCSI],
 349                                 msg_type, buf, len);
 350                 rcu_read_unlock();
 351                 if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
 352                         break;
 353
 354                 msleep(100);
 355                 retry++;
 356         }
 357         return rc;
 358 }
 359
 360 static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
 361
 362 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 363                                   char *buf, u16 len)
 364 {
 365         int rc = -EINVAL;
 366
 367         switch (msg_type) {
 368         case ISCSI_UEVENT_PATH_UPDATE: {
 369                 struct cnic_local *cp;
 370                 u32 l5_cid;
 371                 struct cnic_sock *csk;
 372                 struct iscsi_path *path_resp;
 373
 374                 if (len < sizeof(*path_resp))
 375                         break;
 376
 377                 path_resp = (struct iscsi_path *) buf;
 378                 cp = dev->cnic_priv;
 379                 l5_cid = (u32) path_resp->handle;
 380                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 381                         break;
 382
 383                 rcu_read_lock();
 384                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
 385                         rc = -ENODEV;
 386                         rcu_read_unlock();
 387                         break;
 388                 }
 389                 csk = &cp->csk_tbl[l5_cid];
 390                 csk_hold(csk);
 391                 if (cnic_in_use(csk) &&
 392                     test_bit(SK_F_CONNECT_START, &csk->flags)) {
 393
 394                         csk->vlan_id = path_resp->vlan_id;
 395
 396                         memcpy(csk->ha, path_resp->mac_addr, 6);
 397                         if (test_bit(SK_F_IPV6, &csk->flags))
 398                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 399                                        sizeof(struct in6_addr));
 400                         else
 401                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 402                                        sizeof(struct in_addr));
 403
 404                         if (is_valid_ether_addr(csk->ha)) {
 405                                 cnic_cm_set_pg(csk);
 406                         } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
 407                                 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 408
 409                                 cnic_cm_upcall(cp, csk,
 410                                         L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
 411                                 clear_bit(SK_F_CONNECT_START, &csk->flags);
 412                         }
 413                 }
 414                 csk_put(csk);
 415                 rcu_read_unlock();
 416                 rc = 0;
 417         }
 418         }
 419
 420         return rc;
 421 }
 422
 423 static int cnic_offld_prep(struct cnic_sock *csk)
 424 {
 425         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 426                 return 0;
 427
 428         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 429                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 430                 return 0;
 431         }
 432
 433         return 1;
 434 }
 435
 436 static int cnic_close_prep(struct cnic_sock *csk)
 437 {
 438         clear_bit(SK_F_CONNECT_START, &csk->flags);
 439         smp_mb__after_clear_bit();
 440
 441         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 442                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 443                         msleep(1);
 444
 445                 return 1;
 446         }
 447         return 0;
 448 }
 449
 450 static int cnic_abort_prep(struct cnic_sock *csk)
 451 {
 452         clear_bit(SK_F_CONNECT_START, &csk->flags);
 453         smp_mb__after_clear_bit();
 454
 455         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 456                 msleep(1);
 457
 458         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 459                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 460                 return 1;
 461         }
 462
 463         return 0;
 464 }
 465
 466 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 467 {
 468         struct cnic_dev *dev;
 469
 470         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 471                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 472                 return -EINVAL;
 473         }
 474         mutex_lock(&cnic_lock);
 475         if (cnic_ulp_tbl_prot(ulp_type)) {
 476                 pr_err("%s: Type %d has already been registered\n",
 477                        __func__, ulp_type);
 478                 mutex_unlock(&cnic_lock);
 479                 return -EBUSY;
 480         }
 481
 482         read_lock(&cnic_dev_lock);
 483         list_for_each_entry(dev, &cnic_dev_list, list) {
 484                 struct cnic_local *cp = dev->cnic_priv;
 485
 486                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 487         }
 488         read_unlock(&cnic_dev_lock);
 489
 490         atomic_set(&ulp_ops->ref_count, 0);
 491         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 492         mutex_unlock(&cnic_lock);
 493
 494         /* Prevent race conditions with netdev_event */
 495         rtnl_lock();
 496         list_for_each_entry(dev, &cnic_dev_list, list) {
 497                 struct cnic_local *cp = dev->cnic_priv;
 498
 499                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 500                         ulp_ops->cnic_init(dev);
 501         }
 502         rtnl_unlock();
 503
 504         return 0;
 505 }
 506
 507 int cnic_unregister_driver(int ulp_type)
 508 {
 509         struct cnic_dev *dev;
 510         struct cnic_ulp_ops *ulp_ops;
 511         int i = 0;
 512
 513         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 514                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 515                 return -EINVAL;
 516         }
 517         mutex_lock(&cnic_lock);
 518         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 519         if (!ulp_ops) {
 520                 pr_err("%s: Type %d has not been registered\n",
 521                        __func__, ulp_type);
 522                 goto out_unlock;
 523         }
 524         read_lock(&cnic_dev_lock);
 525         list_for_each_entry(dev, &cnic_dev_list, list) {
 526                 struct cnic_local *cp = dev->cnic_priv;
 527
 528                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 529                         pr_err("%s: Type %d still has devices registered\n",
 530                                __func__, ulp_type);
 531                         read_unlock(&cnic_dev_lock);
 532                         goto out_unlock;
 533                 }
 534         }
 535         read_unlock(&cnic_dev_lock);
 536
 537         RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);
 538
 539         mutex_unlock(&cnic_lock);
 540         synchronize_rcu();
 541         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 542                 msleep(100);
 543                 i++;
 544         }
 545
 546         if (atomic_read(&ulp_ops->ref_count) != 0)
 547                 pr_warn("%s: Failed waiting for ref count to go to zero\n",
 548                         __func__);
 549         return 0;
 550
 551 out_unlock:
 552         mutex_unlock(&cnic_lock);
 553         return -EINVAL;
 554 }
 555
 556 static int cnic_start_hw(struct cnic_dev *);
 557 static void cnic_stop_hw(struct cnic_dev *);
 558
 559 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 560                                 void *ulp_ctx)
 561 {
 562         struct cnic_local *cp = dev->cnic_priv;
 563         struct cnic_ulp_ops *ulp_ops;
 564
 565         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 566                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 567                 return -EINVAL;
 568         }
 569         mutex_lock(&cnic_lock);
 570         if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
 571                 pr_err("%s: Driver with type %d has not been registered\n",
 572                        __func__, ulp_type);
 573                 mutex_unlock(&cnic_lock);
 574                 return -EAGAIN;
 575         }
 576         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 577                 pr_err("%s: Type %d has already been registered to this device\n",
 578                        __func__, ulp_type);
 579                 mutex_unlock(&cnic_lock);
 580                 return -EBUSY;
 581         }
 582
 583         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 584         cp->ulp_handle[ulp_type] = ulp_ctx;
 585         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 586         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 587         cnic_hold(dev);
 588
 589         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 590                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 591                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 592
 593         mutex_unlock(&cnic_lock);
 594
 595         cnic_ulp_ctl(dev, ulp_type, true);
 596
 597         return 0;
 598
 599 }
 600 EXPORT_SYMBOL(cnic_register_driver);
 601
 602 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 603 {
 604         struct cnic_local *cp = dev->cnic_priv;
 605         int i = 0;
 606
 607         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 608                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 609                 return -EINVAL;
 610         }
 611         mutex_lock(&cnic_lock);
 612         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 613                 RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
 614                 cnic_put(dev);
 615         } else {
 616                 pr_err("%s: device not registered to this ulp type %d\n",
 617                        __func__, ulp_type);
 618                 mutex_unlock(&cnic_lock);
 619                 return -EINVAL;
 620         }
 621         mutex_unlock(&cnic_lock);
 622
 623         if (ulp_type == CNIC_ULP_ISCSI)
 624                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 625         else if (ulp_type == CNIC_ULP_FCOE)
 626                 dev->fcoe_cap = NULL;
 627
 628         synchronize_rcu();
 629
 630         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 631                i < 20) {
 632                 msleep(100);
 633                 i++;
 634         }
 635         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 636                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 637
 638         cnic_ulp_ctl(dev, ulp_type, false);
 639
 640         return 0;
 641 }
 642 EXPORT_SYMBOL(cnic_unregister_driver);
 643
 644 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
 645                             u32 next)
 646 {
 647         id_tbl->start = start_id;
 648         id_tbl->max = size;
 649         id_tbl->next = next;
 650         spin_lock_init(&id_tbl->lock);
 651         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 652         if (!id_tbl->table)
 653                 return -ENOMEM;
 654
 655         return 0;
 656 }
 657
 658 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 659 {
 660         kfree(id_tbl->table);
 661         id_tbl->table = NULL;
 662 }
 663
 664 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 665 {
 666         int ret = -1;
 667
 668         id -= id_tbl->start;
 669         if (id >= id_tbl->max)
 670                 return ret;
 671
 672         spin_lock(&id_tbl->lock);
 673         if (!test_bit(id, id_tbl->table)) {
 674                 set_bit(id, id_tbl->table);
 675                 ret = 0;
 676         }
 677         spin_unlock(&id_tbl->lock);
 678         return ret;
 679 }
 680
 681 /* Returns -1 if not successful */
 682 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 683 {
 684         u32 id;
 685
 686         spin_lock(&id_tbl->lock);
 687         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 688         if (id >= id_tbl->max) {
 689                 id = -1;
 690                 if (id_tbl->next != 0) {
 691                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 692                         if (id >= id_tbl->next)
 693                                 id = -1;
 694                 }
 695         }
 696
 697         if (id < id_tbl->max) {
 698                 set_bit(id, id_tbl->table);
 699                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 700                 id += id_tbl->start;
 701         }
 702
 703         spin_unlock(&id_tbl->lock);
 704
 705         return id;
 706 }
 707
 708 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 709 {
 710         if (id == -1)
 711                 return;
 712
 713         id -= id_tbl->start;
 714         if (id >= id_tbl->max)
 715                 return;
 716
 717         clear_bit(id, id_tbl->table);
 718 }
 719
 720 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 721 {
 722         int i;
 723
 724         if (!dma->pg_arr)
 725                 return;
 726
 727         for (i = 0; i < dma->num_pages; i++) {
 728                 if (dma->pg_arr[i]) {
 729                         dma_free_coherent(&dev->pcidev->dev, BNX2_PAGE_SIZE,
 730                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 731                         dma->pg_arr[i] = NULL;
 732                 }
 733         }
 734         if (dma->pgtbl) {
 735                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 736                                   dma->pgtbl, dma->pgtbl_map);
 737                 dma->pgtbl = NULL;
 738         }
 739         kfree(dma->pg_arr);
 740         dma->pg_arr = NULL;
 741         dma->num_pages = 0;
 742 }
 743
 744 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 745 {
 746         int i;
 747         __le32 *page_table = (__le32 *) dma->pgtbl;
 748
 749         for (i = 0; i < dma->num_pages; i++) {
 750                 /* Each entry needs to be in big endian format. */
 751                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 752                 page_table++;
 753                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 754                 page_table++;
 755         }
 756 }
 757
 758 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 759 {
 760         int i;
 761         __le32 *page_table = (__le32 *) dma->pgtbl;
 762
 763         for (i = 0; i < dma->num_pages; i++) {
 764                 /* Each entry needs to be in little endian format. */
 765                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 766                 page_table++;
 767                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 768                 page_table++;
 769         }
 770 }
 771
 772 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 773                           int pages, int use_pg_tbl)
 774 {
 775         int i, size;
 776         struct cnic_local *cp = dev->cnic_priv;
 777
 778         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 779         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 780         if (dma->pg_arr == NULL)
 781                 return -ENOMEM;
 782
 783         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 784         dma->num_pages = pages;
 785
 786         for (i = 0; i < pages; i++) {
 787                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 788                                                     BNX2_PAGE_SIZE,
 789                                                     &dma->pg_map_arr[i],
 790                                                     GFP_ATOMIC);
 791                 if (dma->pg_arr[i] == NULL)
 792                         goto error;
 793         }
 794         if (!use_pg_tbl)
 795                 return 0;
 796
 797         dma->pgtbl_size = ((pages * 8) + BNX2_PAGE_SIZE - 1) &
 798                           ~(BNX2_PAGE_SIZE - 1);
 799         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 800                                         &dma->pgtbl_map, GFP_ATOMIC);
 801         if (dma->pgtbl == NULL)
 802                 goto error;
 803
 804         cp->setup_pgtbl(dev, dma);
 805
 806         return 0;
 807
 808 error:
 809         cnic_free_dma(dev, dma);
 810         return -ENOMEM;
 811 }
 812
 813 static void cnic_free_context(struct cnic_dev *dev)
 814 {
 815         struct cnic_local *cp = dev->cnic_priv;
 816         int i;
 817
 818         for (i = 0; i < cp->ctx_blks; i++) {
 819                 if (cp->ctx_arr[i].ctx) {
 820                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 821                                           cp->ctx_arr[i].ctx,
 822                                           cp->ctx_arr[i].mapping);
 823                         cp->ctx_arr[i].ctx = NULL;
 824                 }
 825         }
 826 }
 827
 828 static void __cnic_free_uio_rings(struct cnic_uio_dev *udev)
 829 {
 830         if (udev->l2_buf) {
 831                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 832                                   udev->l2_buf, udev->l2_buf_map);
 833                 udev->l2_buf = NULL;
 834         }
 835
 836         if (udev->l2_ring) {
 837                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 838                                   udev->l2_ring, udev->l2_ring_map);
 839                 udev->l2_ring = NULL;
 840         }
 841
 842 }
 843
 844 static void __cnic_free_uio(struct cnic_uio_dev *udev)
 845 {
 846         uio_unregister_device(&udev->cnic_uinfo);
 847
 848         __cnic_free_uio_rings(udev);
 849
 850         pci_dev_put(udev->pdev);
 851         kfree(udev);
 852 }
 853
 854 static void cnic_free_uio(struct cnic_uio_dev *udev)
 855 {
 856         if (!udev)
 857                 return;
 858
 859         write_lock(&cnic_dev_lock);
 860         list_del_init(&udev->list);
 861         write_unlock(&cnic_dev_lock);
 862         __cnic_free_uio(udev);
 863 }
 864
 865 static void cnic_free_resc(struct cnic_dev *dev)
 866 {
 867         struct cnic_local *cp = dev->cnic_priv;
 868         struct cnic_uio_dev *udev = cp->udev;
 869
 870         if (udev) {
 871                 udev->dev = NULL;
 872                 cp->udev = NULL;
 873                 if (udev->uio_dev == -1)
 874                         __cnic_free_uio_rings(udev);
 875         }
 876
 877         cnic_free_context(dev);
 878         kfree(cp->ctx_arr);
 879         cp->ctx_arr = NULL;
 880         cp->ctx_blks = 0;
 881
 882         cnic_free_dma(dev, &cp->gbl_buf_info);
 883         cnic_free_dma(dev, &cp->kwq_info);
 884         cnic_free_dma(dev, &cp->kwq_16_data_info);
 885         cnic_free_dma(dev, &cp->kcq2.dma);
 886         cnic_free_dma(dev, &cp->kcq1.dma);
 887         kfree(cp->iscsi_tbl);
 888         cp->iscsi_tbl = NULL;
 889         kfree(cp->ctx_tbl);
 890         cp->ctx_tbl = NULL;
 891
 892         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
 893         cnic_free_id_tbl(&cp->cid_tbl);
 894 }
 895
 896 static int cnic_alloc_context(struct cnic_dev *dev)
 897 {
 898         struct cnic_local *cp = dev->cnic_priv;
 899
 900         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
 901                 int i, k, arr_size;
 902
 903                 cp->ctx_blk_size = BNX2_PAGE_SIZE;
 904                 cp->cids_per_blk = BNX2_PAGE_SIZE / 128;
 905                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 906                            sizeof(struct cnic_ctx);
 907                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 908                 if (cp->ctx_arr == NULL)
 909                         return -ENOMEM;
 910
 911                 k = 0;
 912                 for (i = 0; i < 2; i++) {
 913                         u32 j, reg, off, lo, hi;
 914
 915                         if (i == 0)
 916                                 off = BNX2_PG_CTX_MAP;
 917                         else
 918                                 off = BNX2_ISCSI_CTX_MAP;
 919
 920                         reg = cnic_reg_rd_ind(dev, off);
 921                         lo = reg >> 16;
 922                         hi = reg & 0xffff;
 923                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 924                                 cp->ctx_arr[k].cid = j;
 925                 }
 926
 927                 cp->ctx_blks = k;
 928                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 929                         cp->ctx_blks = 0;
 930                         return -ENOMEM;
 931                 }
 932
 933                 for (i = 0; i < cp->ctx_blks; i++) {
 934                         cp->ctx_arr[i].ctx =
 935                                 dma_alloc_coherent(&dev->pcidev->dev,
 936                                                    BNX2_PAGE_SIZE,
 937                                                    &cp->ctx_arr[i].mapping,
 938                                                    GFP_KERNEL);
 939                         if (cp->ctx_arr[i].ctx == NULL)
 940                                 return -ENOMEM;
 941                 }
 942         }
 943         return 0;
 944 }
 945
 946 static u16 cnic_bnx2_next_idx(u16 idx)
 947 {
 948         return idx + 1;
 949 }
 950
 951 static u16 cnic_bnx2_hw_idx(u16 idx)
 952 {
 953         return idx;
 954 }
 955
 956 static u16 cnic_bnx2x_next_idx(u16 idx)
 957 {
 958         idx++;
 959         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 960                 idx++;
 961
 962         return idx;
 963 }
 964
 965 static u16 cnic_bnx2x_hw_idx(u16 idx)
 966 {
 967         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 968                 idx++;
 969         return idx;
 970 }
 971
 972 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
 973                           bool use_pg_tbl)
 974 {
 975         int err, i, use_page_tbl = 0;
 976         struct kcqe **kcq;
 977
 978         if (use_pg_tbl)
 979                 use_page_tbl = 1;
 980
 981         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
 982         if (err)
 983                 return err;
 984
 985         kcq = (struct kcqe **) info->dma.pg_arr;
 986         info->kcq = kcq;
 987
 988         info->next_idx = cnic_bnx2_next_idx;
 989         info->hw_idx = cnic_bnx2_hw_idx;
 990         if (use_pg_tbl)
 991                 return 0;
 992
 993         info->next_idx = cnic_bnx2x_next_idx;
 994         info->hw_idx = cnic_bnx2x_hw_idx;
 995
 996         for (i = 0; i < KCQ_PAGE_CNT; i++) {
 997                 struct bnx2x_bd_chain_next *next =
 998                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
 999                 int j = i + 1;
1000
1001                 if (j >= KCQ_PAGE_CNT)
1002                         j = 0;
1003                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
1004                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
1005         }
1006         return 0;
1007 }
1008
1009 static int __cnic_alloc_uio_rings(struct cnic_uio_dev *udev, int pages)
1010 {
1011         struct cnic_local *cp = udev->dev->cnic_priv;
1012
1013         if (udev->l2_ring)
1014                 return 0;
1015
1016         udev->l2_ring_size = pages * BNX2_PAGE_SIZE;
1017         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
1018                                            &udev->l2_ring_map,
1019                                            GFP_KERNEL | __GFP_COMP);
1020         if (!udev->l2_ring)
1021                 return -ENOMEM;
1022
1023         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
1024         udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
1025         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1026                                           &udev->l2_buf_map,
1027                                           GFP_KERNEL | __GFP_COMP);
1028         if (!udev->l2_buf) {
1029                 __cnic_free_uio_rings(udev);
1030                 return -ENOMEM;
1031         }
1032
1033         return 0;
1034
1035 }
1036
1037 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
1038 {
1039         struct cnic_local *cp = dev->cnic_priv;
1040         struct cnic_uio_dev *udev;
1041
1042         read_lock(&cnic_dev_lock);
1043         list_for_each_entry(udev, &cnic_udev_list, list) {
1044                 if (udev->pdev == dev->pcidev) {
1045                         udev->dev = dev;
1046                         if (__cnic_alloc_uio_rings(udev, pages)) {
1047                                 udev->dev = NULL;
1048                                 read_unlock(&cnic_dev_lock);
1049                                 return -ENOMEM;
1050                         }
1051                         cp->udev = udev;
1052                         read_unlock(&cnic_dev_lock);
1053                         return 0;
1054                 }
1055         }
1056         read_unlock(&cnic_dev_lock);
1057
1058         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
1059         if (!udev)
1060                 return -ENOMEM;
1061
1062         udev->uio_dev = -1;
1063
1064         udev->dev = dev;
1065         udev->pdev = dev->pcidev;
1066
1067         if (__cnic_alloc_uio_rings(udev, pages))
1068                 goto err_udev;
1069
1070         write_lock(&cnic_dev_lock);
1071         list_add(&udev->list, &cnic_udev_list);
1072         write_unlock(&cnic_dev_lock);
1073
1074         pci_dev_get(udev->pdev);
1075
1076         cp->udev = udev;
1077
1078         return 0;
1079
1080  err_udev:
1081         kfree(udev);
1082         return -ENOMEM;
1083 }
1084
1085 static int cnic_init_uio(struct cnic_dev *dev)
1086 {
1087         struct cnic_local *cp = dev->cnic_priv;
1088         struct cnic_uio_dev *udev = cp->udev;
1089         struct uio_info *uinfo;
1090         int ret = 0;
1091
1092         if (!udev)
1093                 return -ENOMEM;
1094
1095         uinfo = &udev->cnic_uinfo;
1096
1097         uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
1098         uinfo->mem[0].internal_addr = dev->regview;
1099         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1100
1101         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1102                 uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
1103                                                      TX_MAX_TSS_RINGS + 1);
1104                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1105                                         PAGE_MASK;
1106                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1107                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1108                 else
1109                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1110
1111                 uinfo->name = "bnx2_cnic";
1112         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1113                 uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);
1114
1115                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1116                         PAGE_MASK;
1117                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1118
1119                 uinfo->name = "bnx2x_cnic";
1120         }
1121
1122         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1123
1124         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1125         uinfo->mem[2].size = udev->l2_ring_size;
1126         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1127
1128         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1129         uinfo->mem[3].size = udev->l2_buf_size;
1130         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1131
1132         uinfo->version = CNIC_MODULE_VERSION;
1133         uinfo->irq = UIO_IRQ_CUSTOM;
1134
1135         uinfo->open = cnic_uio_open;
1136         uinfo->release = cnic_uio_close;
1137
1138         if (udev->uio_dev == -1) {
1139                 if (!uinfo->priv) {
1140                         uinfo->priv = udev;
1141
1142                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1143                 }
1144         } else {
1145                 cnic_init_rings(dev);
1146         }
1147
1148         return ret;
1149 }
1150
1151 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1152 {
1153         struct cnic_local *cp = dev->cnic_priv;
1154         int ret;
1155
1156         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1157         if (ret)
1158                 goto error;
1159         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1160
1161         ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1162         if (ret)
1163                 goto error;
1164
1165         ret = cnic_alloc_context(dev);
1166         if (ret)
1167                 goto error;
1168
1169         ret = cnic_alloc_uio_rings(dev, 2);
1170         if (ret)
1171                 goto error;
1172
1173         ret = cnic_init_uio(dev);
1174         if (ret)
1175                 goto error;
1176
1177         return 0;
1178
1179 error:
1180         cnic_free_resc(dev);
1181         return ret;
1182 }
1183
1184 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1185 {
1186         struct cnic_local *cp = dev->cnic_priv;
1187         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1188         int total_mem, blks, i;
1189
1190         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1191         blks = total_mem / ctx_blk_size;
1192         if (total_mem % ctx_blk_size)
1193                 blks++;
1194
1195         if (blks > cp->ethdev->ctx_tbl_len)
1196                 return -ENOMEM;
1197
1198         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1199         if (cp->ctx_arr == NULL)
1200                 return -ENOMEM;
1201
1202         cp->ctx_blks = blks;
1203         cp->ctx_blk_size = ctx_blk_size;
1204         if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1205                 cp->ctx_align = 0;
1206         else
1207                 cp->ctx_align = ctx_blk_size;
1208
1209         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1210
1211         for (i = 0; i < blks; i++) {
1212                 cp->ctx_arr[i].ctx =
1213                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1214                                            &cp->ctx_arr[i].mapping,
1215                                            GFP_KERNEL);
1216                 if (cp->ctx_arr[i].ctx == NULL)
1217                         return -ENOMEM;
1218
1219                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1220                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1221                                 cnic_free_context(dev);
1222                                 cp->ctx_blk_size += cp->ctx_align;
1223                                 i = -1;
1224                                 continue;
1225                         }
1226                 }
1227         }
1228         return 0;
1229 }
1230
1231 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1232 {
1233         struct cnic_local *cp = dev->cnic_priv;
1234         struct cnic_eth_dev *ethdev = cp->ethdev;
1235         u32 start_cid = ethdev->starting_cid;
1236         int i, j, n, ret, pages;
1237         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1238
1239         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1240         cp->iscsi_start_cid = start_cid;
1241         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1242
1243         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1244                 cp->max_cid_space += dev->max_fcoe_conn;
1245                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1246                 if (!cp->fcoe_init_cid)
1247                         cp->fcoe_init_cid = 0x10;
1248         }
1249
1250         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1251                                 GFP_KERNEL);
1252         if (!cp->iscsi_tbl)
1253                 goto error;
1254
1255         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1256                                 cp->max_cid_space, GFP_KERNEL);
1257         if (!cp->ctx_tbl)
1258                 goto error;
1259
1260         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1261                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1262                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1263         }
1264
1265         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1266                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1267
1268         pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1269                 PAGE_SIZE;
1270
1271         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1272         if (ret)
1273                 return -ENOMEM;
1274
1275         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1276         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1277                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1278
1279                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1280                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1281                                                    off;
1282
1283                 if ((i % n) == (n - 1))
1284                         j++;
1285         }
1286
1287         ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1288         if (ret)
1289                 goto error;
1290
1291         if (CNIC_SUPPORTS_FCOE(cp)) {
1292                 ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1293                 if (ret)
1294                         goto error;
1295         }
1296
1297         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1298         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1299         if (ret)
1300                 goto error;
1301
1302         ret = cnic_alloc_bnx2x_context(dev);
1303         if (ret)
1304                 goto error;
1305
1306         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
1307                 return 0;
1308
1309         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1310
1311         cp->l2_rx_ring_size = 15;
1312
1313         ret = cnic_alloc_uio_rings(dev, 4);
1314         if (ret)
1315                 goto error;
1316
1317         ret = cnic_init_uio(dev);
1318         if (ret)
1319                 goto error;
1320
1321         return 0;
1322
1323 error:
1324         cnic_free_resc(dev);
1325         return -ENOMEM;
1326 }
1327
1328 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1329 {
1330         return cp->max_kwq_idx -
1331                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1332 }
1333
1334 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1335                                   u32 num_wqes)
1336 {
1337         struct cnic_local *cp = dev->cnic_priv;
1338         struct kwqe *prod_qe;
1339         u16 prod, sw_prod, i;
1340
1341         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1342                 return -EAGAIN;         /* bnx2 is down */
1343
1344         spin_lock_bh(&cp->cnic_ulp_lock);
1345         if (num_wqes > cnic_kwq_avail(cp) &&
1346             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1347                 spin_unlock_bh(&cp->cnic_ulp_lock);
1348                 return -EAGAIN;
1349         }
1350
1351         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1352
1353         prod = cp->kwq_prod_idx;
1354         sw_prod = prod & MAX_KWQ_IDX;
1355         for (i = 0; i < num_wqes; i++) {
1356                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1357                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1358                 prod++;
1359                 sw_prod = prod & MAX_KWQ_IDX;
1360         }
1361         cp->kwq_prod_idx = prod;
1362
1363         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1364
1365         spin_unlock_bh(&cp->cnic_ulp_lock);
1366         return 0;
1367 }
1368
1369 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1370                                    union l5cm_specific_data *l5_data)
1371 {
1372         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1373         dma_addr_t map;
1374
1375         map = ctx->kwqe_data_mapping;
1376         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1377         l5_data->phy_address.hi = (u64) map >> 32;
1378         return ctx->kwqe_data;
1379 }
1380
1381 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1382                                 u32 type, union l5cm_specific_data *l5_data)
1383 {
1384         struct cnic_local *cp = dev->cnic_priv;
1385         struct l5cm_spe kwqe;
1386         struct kwqe_16 *kwq[1];
1387         u16 type_16;
1388         int ret;
1389
1390         kwqe.hdr.conn_and_cmd_data =
1391                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1392                              BNX2X_HW_CID(cp, cid)));
1393
1394         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1395         type_16 |= (cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1396                    SPE_HDR_FUNCTION_ID;
1397
1398         kwqe.hdr.type = cpu_to_le16(type_16);
1399         kwqe.hdr.reserved1 = 0;
1400         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1401         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1402
1403         kwq[0] = (struct kwqe_16 *) &kwqe;
1404
1405         spin_lock_bh(&cp->cnic_ulp_lock);
1406         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1407         spin_unlock_bh(&cp->cnic_ulp_lock);
1408
1409         if (ret == 1)
1410                 return 0;
1411
1412         return ret;
1413 }
1414
1415 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1416                                    struct kcqe *cqes[], u32 num_cqes)
1417 {
1418         struct cnic_local *cp = dev->cnic_priv;
1419         struct cnic_ulp_ops *ulp_ops;
1420
1421         rcu_read_lock();
1422         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1423         if (likely(ulp_ops)) {
1424                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1425                                           cqes, num_cqes);
1426         }
1427         rcu_read_unlock();
1428 }
1429
1430 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1431 {
1432         struct cnic_local *cp = dev->cnic_priv;
1433         struct bnx2x *bp = netdev_priv(dev->netdev);
1434         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1435         int hq_bds, pages;
1436         u32 pfid = cp->pfid;
1437
1438         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1439         cp->num_ccells = req1->num_ccells_per_conn;
1440         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1441                               cp->num_iscsi_tasks;
1442         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1443                         BNX2X_ISCSI_R2TQE_SIZE;
1444         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1445         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1446         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1447         cp->num_cqs = req1->num_cqs;
1448
1449         if (!dev->max_iscsi_conn)
1450                 return 0;
1451
1452         /* init Tstorm RAM */
1453         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1454                   req1->rq_num_wqes);
1455         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1456                   PAGE_SIZE);
1457         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1458                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1459         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1460                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1461                   req1->num_tasks_per_conn);
1462
1463         /* init Ustorm RAM */
1464         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1465                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1466                   req1->rq_buffer_size);
1467         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1468                   PAGE_SIZE);
1469         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1470                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1471         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1472                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1473                   req1->num_tasks_per_conn);
1474         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1475                   req1->rq_num_wqes);
1476         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1477                   req1->cq_num_wqes);
1478         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1479                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1480
1481         /* init Xstorm RAM */
1482         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1483                   PAGE_SIZE);
1484         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1485                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1486         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1487                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1488                   req1->num_tasks_per_conn);
1489         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1490                   hq_bds);
1491         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1492                   req1->num_tasks_per_conn);
1493         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1494                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1495
1496         /* init Cstorm RAM */
1497         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1498                   PAGE_SIZE);
1499         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1500                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1501         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1502                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1503                   req1->num_tasks_per_conn);
1504         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1505                   req1->cq_num_wqes);
1506         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1507                   hq_bds);
1508
1509         return 0;
1510 }
1511
1512 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1513 {
1514         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1515         struct cnic_local *cp = dev->cnic_priv;
1516         struct bnx2x *bp = netdev_priv(dev->netdev);
1517         u32 pfid = cp->pfid;
1518         struct iscsi_kcqe kcqe;
1519         struct kcqe *cqes[1];
1520
1521         memset(&kcqe, 0, sizeof(kcqe));
1522         if (!dev->max_iscsi_conn) {
1523                 kcqe.completion_status =
1524                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1525                 goto done;
1526         }
1527
1528         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1529                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1530         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1531                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1532                 req2->error_bit_map[1]);
1533
1534         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1535                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1536         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1537                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1538         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1539                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1540                 req2->error_bit_map[1]);
1541
1542         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1543                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1544
1545         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1546
1547 done:
1548         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1549         cqes[0] = (struct kcqe *) &kcqe;
1550         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1551
1552         return 0;
1553 }
1554
1555 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1556 {
1557         struct cnic_local *cp = dev->cnic_priv;
1558         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1559
1560         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1561                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1562
1563                 cnic_free_dma(dev, &iscsi->hq_info);
1564                 cnic_free_dma(dev, &iscsi->r2tq_info);
1565                 cnic_free_dma(dev, &iscsi->task_array_info);
1566                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1567         } else {
1568                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1569         }
1570
1571         ctx->cid = 0;
1572 }
1573
1574 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1575 {
1576         u32 cid;
1577         int ret, pages;
1578         struct cnic_local *cp = dev->cnic_priv;
1579         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1580         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1581
1582         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1583                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1584                 if (cid == -1) {
1585                         ret = -ENOMEM;
1586                         goto error;
1587                 }
1588                 ctx->cid = cid;
1589                 return 0;
1590         }
1591
1592         cid = cnic_alloc_new_id(&cp->cid_tbl);
1593         if (cid == -1) {
1594                 ret = -ENOMEM;
1595                 goto error;
1596         }
1597
1598         ctx->cid = cid;
1599         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1600
1601         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1602         if (ret)
1603                 goto error;
1604
1605         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1606         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1607         if (ret)
1608                 goto error;
1609
1610         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1611         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1612         if (ret)
1613                 goto error;
1614
1615         return 0;
1616
1617 error:
1618         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1619         return ret;
1620 }
1621
1622 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1623                                 struct regpair *ctx_addr)
1624 {
1625         struct cnic_local *cp = dev->cnic_priv;
1626         struct cnic_eth_dev *ethdev = cp->ethdev;
1627         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1628         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1629         unsigned long align_off = 0;
1630         dma_addr_t ctx_map;
1631         void *ctx;
1632
1633         if (cp->ctx_align) {
1634                 unsigned long mask = cp->ctx_align - 1;
1635
1636                 if (cp->ctx_arr[blk].mapping & mask)
1637                         align_off = cp->ctx_align -
1638                                     (cp->ctx_arr[blk].mapping & mask);
1639         }
1640         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1641                 (off * BNX2X_CONTEXT_MEM_SIZE);
1642         ctx = cp->ctx_arr[blk].ctx + align_off +
1643               (off * BNX2X_CONTEXT_MEM_SIZE);
1644         if (init)
1645                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1646
1647         ctx_addr->lo = ctx_map & 0xffffffff;
1648         ctx_addr->hi = (u64) ctx_map >> 32;
1649         return ctx;
1650 }
1651
1652 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1653                                 u32 num)
1654 {
1655         struct cnic_local *cp = dev->cnic_priv;
1656         struct iscsi_kwqe_conn_offload1 *req1 =
1657                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1658         struct iscsi_kwqe_conn_offload2 *req2 =
1659                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1660         struct iscsi_kwqe_conn_offload3 *req3;
1661         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1662         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1663         u32 cid = ctx->cid;
1664         u32 hw_cid = BNX2X_HW_CID(cp, cid);
1665         struct iscsi_context *ictx;
1666         struct regpair context_addr;
1667         int i, j, n = 2, n_max;
1668         u8 port = CNIC_PORT(cp);
1669
1670         ctx->ctx_flags = 0;
1671         if (!req2->num_additional_wqes)
1672                 return -EINVAL;
1673
1674         n_max = req2->num_additional_wqes + 2;
1675
1676         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1677         if (ictx == NULL)
1678                 return -ENOMEM;
1679
1680         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1681
1682         ictx->xstorm_ag_context.hq_prod = 1;
1683
1684         ictx->xstorm_st_context.iscsi.first_burst_length =
1685                 ISCSI_DEF_FIRST_BURST_LEN;
1686         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1687                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1688         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1689                 req1->sq_page_table_addr_lo;
1690         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1691                 req1->sq_page_table_addr_hi;
1692         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1693         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1694         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1695                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1696         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1697                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1698         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1699                 iscsi->hq_info.pgtbl[0];
1700         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1701                 iscsi->hq_info.pgtbl[1];
1702         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1703                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1704         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1705                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1706         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1707                 iscsi->r2tq_info.pgtbl[0];
1708         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1709                 iscsi->r2tq_info.pgtbl[1];
1710         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1711                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1712         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1713                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1714         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1715                 BNX2X_ISCSI_PBL_NOT_CACHED;
1716         ictx->xstorm_st_context.iscsi.flags.flags |=
1717                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1718         ictx->xstorm_st_context.iscsi.flags.flags |=
1719                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1720         ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1721                 ETH_P_8021Q;
1722         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
1723                 cp->port_mode == CHIP_2_PORT_MODE) {
1724
1725                 port = 0;
1726         }
1727         ictx->xstorm_st_context.common.flags =
1728                 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1729         ictx->xstorm_st_context.common.flags =
1730                 port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1731
1732         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1733         /* TSTORM requires the base address of RQ DB & not PTE */
1734         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1735                 req2->rq_page_table_addr_lo & PAGE_MASK;
1736         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1737                 req2->rq_page_table_addr_hi;
1738         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1739         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1740         ictx->tstorm_st_context.tcp.flags2 |=
1741                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1742         ictx->tstorm_st_context.tcp.ooo_support_mode =
1743                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1744
1745         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1746
1747         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1748                 req2->rq_page_table_addr_lo;
1749         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1750                 req2->rq_page_table_addr_hi;
1751         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1752         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1753         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1754                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1755         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1756                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1757         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1758                 iscsi->r2tq_info.pgtbl[0];
1759         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1760                 iscsi->r2tq_info.pgtbl[1];
1761         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1762                 req1->cq_page_table_addr_lo;
1763         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1764                 req1->cq_page_table_addr_hi;
1765         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1766         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1767         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1768         ictx->ustorm_st_context.task_pbe_cache_index =
1769                 BNX2X_ISCSI_PBL_NOT_CACHED;
1770         ictx->ustorm_st_context.task_pdu_cache_index =
1771                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1772
1773         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1774                 if (j == 3) {
1775                         if (n >= n_max)
1776                                 break;
1777                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1778                         j = 0;
1779                 }
1780                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1781                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1782                         req3->qp_first_pte[j].hi;
1783                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1784                         req3->qp_first_pte[j].lo;
1785         }
1786
1787         ictx->ustorm_st_context.task_pbl_base.lo =
1788                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1789         ictx->ustorm_st_context.task_pbl_base.hi =
1790                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1791         ictx->ustorm_st_context.tce_phy_addr.lo =
1792                 iscsi->task_array_info.pgtbl[0];
1793         ictx->ustorm_st_context.tce_phy_addr.hi =
1794                 iscsi->task_array_info.pgtbl[1];
1795         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1796         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1797         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1798         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1799                 ISCSI_DEF_MAX_BURST_LEN;
1800         ictx->ustorm_st_context.negotiated_rx |=
1801                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1802                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1803
1804         ictx->cstorm_st_context.hq_pbl_base.lo =
1805                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1806         ictx->cstorm_st_context.hq_pbl_base.hi =
1807                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1808         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1809         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1810         ictx->cstorm_st_context.task_pbl_base.lo =
1811                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1812         ictx->cstorm_st_context.task_pbl_base.hi =
1813                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1814         /* CSTORM and USTORM initialization is different, CSTORM requires
1815          * CQ DB base & not PTE addr */
1816         ictx->cstorm_st_context.cq_db_base.lo =
1817                 req1->cq_page_table_addr_lo & PAGE_MASK;
1818         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1819         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1820         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1821         for (i = 0; i < cp->num_cqs; i++) {
1822                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1823                         ISCSI_INITIAL_SN;
1824                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1825                         ISCSI_INITIAL_SN;
1826         }
1827
1828         ictx->xstorm_ag_context.cdu_reserved =
1829                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1830                                        ISCSI_CONNECTION_TYPE);
1831         ictx->ustorm_ag_context.cdu_usage =
1832                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1833                                        ISCSI_CONNECTION_TYPE);
1834         return 0;
1835
1836 }
1837
1838 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1839                                    u32 num, int *work)
1840 {
1841         struct iscsi_kwqe_conn_offload1 *req1;
1842         struct iscsi_kwqe_conn_offload2 *req2;
1843         struct cnic_local *cp = dev->cnic_priv;
1844         struct cnic_context *ctx;
1845         struct iscsi_kcqe kcqe;
1846         struct kcqe *cqes[1];
1847         u32 l5_cid;
1848         int ret = 0;
1849
1850         if (num < 2) {
1851                 *work = num;
1852                 return -EINVAL;
1853         }
1854
1855         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1856         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1857         if ((num - 2) < req2->num_additional_wqes) {
1858                 *work = num;
1859                 return -EINVAL;
1860         }
1861         *work = 2 + req2->num_additional_wqes;
1862
1863         l5_cid = req1->iscsi_conn_id;
1864         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1865                 return -EINVAL;
1866
1867         memset(&kcqe, 0, sizeof(kcqe));
1868         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1869         kcqe.iscsi_conn_id = l5_cid;
1870         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1871
1872         ctx = &cp->ctx_tbl[l5_cid];
1873         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1874                 kcqe.completion_status =
1875                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1876                 goto done;
1877         }
1878
1879         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1880                 atomic_dec(&cp->iscsi_conn);
1881                 goto done;
1882         }
1883         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1884         if (ret) {
1885                 atomic_dec(&cp->iscsi_conn);
1886                 ret = 0;
1887                 goto done;
1888         }
1889         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1890         if (ret < 0) {
1891                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1892                 atomic_dec(&cp->iscsi_conn);
1893                 goto done;
1894         }
1895
1896         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1897         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1898
1899 done:
1900         cqes[0] = (struct kcqe *) &kcqe;
1901         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1902         return 0;
1903 }
1904
1905
1906 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1907 {
1908         struct cnic_local *cp = dev->cnic_priv;
1909         struct iscsi_kwqe_conn_update *req =
1910                 (struct iscsi_kwqe_conn_update *) kwqe;
1911         void *data;
1912         union l5cm_specific_data l5_data;
1913         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1914         int ret;
1915
1916         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1917                 return -EINVAL;
1918
1919         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1920         if (!data)
1921                 return -ENOMEM;
1922
1923         memcpy(data, kwqe, sizeof(struct kwqe));
1924
1925         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1926                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1927         return ret;
1928 }
1929
1930 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1931 {
1932         struct cnic_local *cp = dev->cnic_priv;
1933         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1934         union l5cm_specific_data l5_data;
1935         int ret;
1936         u32 hw_cid;
1937
1938         init_waitqueue_head(&ctx->waitq);
1939         ctx->wait_cond = 0;
1940         memset(&l5_data, 0, sizeof(l5_data));
1941         hw_cid = BNX2X_HW_CID(cp, ctx->cid);
1942
1943         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1944                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1945
1946         if (ret == 0) {
1947                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1948                 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1949                         return -EBUSY;
1950         }
1951
1952         return 0;
1953 }
1954
1955 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1956 {
1957         struct cnic_local *cp = dev->cnic_priv;
1958         struct iscsi_kwqe_conn_destroy *req =
1959                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1960         u32 l5_cid = req->reserved0;
1961         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1962         int ret = 0;
1963         struct iscsi_kcqe kcqe;
1964         struct kcqe *cqes[1];
1965
1966         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1967                 goto skip_cfc_delete;
1968
1969         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
1970                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
1971
1972                 if (delta > (2 * HZ))
1973                         delta = 0;
1974
1975                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
1976                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
1977                 goto destroy_reply;
1978         }
1979
1980         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
1981
1982 skip_cfc_delete:
1983         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1984
1985         if (!ret) {
1986                 atomic_dec(&cp->iscsi_conn);
1987                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1988         }
1989
1990 destroy_reply:
1991         memset(&kcqe, 0, sizeof(kcqe));
1992         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1993         kcqe.iscsi_conn_id = l5_cid;
1994         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1995         kcqe.iscsi_conn_context_id = req->context_id;
1996
1997         cqes[0] = (struct kcqe *) &kcqe;
1998         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1999
2000         return 0;
2001 }
2002
2003 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
2004                                       struct l4_kwq_connect_req1 *kwqe1,
2005                                       struct l4_kwq_connect_req3 *kwqe3,
2006                                       struct l5cm_active_conn_buffer *conn_buf)
2007 {
2008         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
2009         struct l5cm_xstorm_conn_buffer *xstorm_buf =
2010                 &conn_buf->xstorm_conn_buffer;
2011         struct l5cm_tstorm_conn_buffer *tstorm_buf =
2012                 &conn_buf->tstorm_conn_buffer;
2013         struct regpair context_addr;
2014         u32 cid = BNX2X_SW_CID(kwqe1->cid);
2015         struct in6_addr src_ip, dst_ip;
2016         int i;
2017         u32 *addrp;
2018
2019         addrp = (u32 *) &conn_addr->local_ip_addr;
2020         for (i = 0; i < 4; i++, addrp++)
2021                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2022
2023         addrp = (u32 *) &conn_addr->remote_ip_addr;
2024         for (i = 0; i < 4; i++, addrp++)
2025                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2026
2027         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
2028
2029         xstorm_buf->context_addr.hi = context_addr.hi;
2030         xstorm_buf->context_addr.lo = context_addr.lo;
2031         xstorm_buf->mss = 0xffff;
2032         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
2033         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
2034                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
2035         xstorm_buf->pseudo_header_checksum =
2036                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
2037
2038         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
2039                 tstorm_buf->params |=
2040                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
2041         if (kwqe3->ka_timeout) {
2042                 tstorm_buf->ka_enable = 1;
2043                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
2044                 tstorm_buf->ka_interval = kwqe3->ka_interval;
2045                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
2046         }
2047         tstorm_buf->max_rt_time = 0xffffffff;
2048 }
2049
2050 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2051 {
2052         struct cnic_local *cp = dev->cnic_priv;
2053         struct bnx2x *bp = netdev_priv(dev->netdev);
2054         u32 pfid = cp->pfid;
2055         u8 *mac = dev->mac_addr;
2056
2057         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2058                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2059         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2060                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2061         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2062                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2063         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2064                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2065         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2066                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2067         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2068                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2069
2070         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2071                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2072         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2073                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2074                  mac[4]);
2075         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2076                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2077         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2078                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2079                  mac[2]);
2080         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2081                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2082         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2083                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2084                  mac[0]);
2085 }
2086
2087 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
2088 {
2089         struct cnic_local *cp = dev->cnic_priv;
2090         struct bnx2x *bp = netdev_priv(dev->netdev);
2091         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
2092         u16 tstorm_flags = 0;
2093
2094         if (tcp_ts) {
2095                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
2096                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
2097         }
2098
2099         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2100                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
2101
2102         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
2103                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
2104 }
2105
2106 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2107                               u32 num, int *work)
2108 {
2109         struct cnic_local *cp = dev->cnic_priv;
2110         struct bnx2x *bp = netdev_priv(dev->netdev);
2111         struct l4_kwq_connect_req1 *kwqe1 =
2112                 (struct l4_kwq_connect_req1 *) wqes[0];
2113         struct l4_kwq_connect_req3 *kwqe3;
2114         struct l5cm_active_conn_buffer *conn_buf;
2115         struct l5cm_conn_addr_params *conn_addr;
2116         union l5cm_specific_data l5_data;
2117         u32 l5_cid = kwqe1->pg_cid;
2118         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2119         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2120         int ret;
2121
2122         if (num < 2) {
2123                 *work = num;
2124                 return -EINVAL;
2125         }
2126
2127         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2128                 *work = 3;
2129         else
2130                 *work = 2;
2131
2132         if (num < *work) {
2133                 *work = num;
2134                 return -EINVAL;
2135         }
2136
2137         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2138                 netdev_err(dev->netdev, "conn_buf size too big\n");
2139                 return -ENOMEM;
2140         }
2141         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2142         if (!conn_buf)
2143                 return -ENOMEM;
2144
2145         memset(conn_buf, 0, sizeof(*conn_buf));
2146
2147         conn_addr = &conn_buf->conn_addr_buf;
2148         conn_addr->remote_addr_0 = csk->ha[0];
2149         conn_addr->remote_addr_1 = csk->ha[1];
2150         conn_addr->remote_addr_2 = csk->ha[2];
2151         conn_addr->remote_addr_3 = csk->ha[3];
2152         conn_addr->remote_addr_4 = csk->ha[4];
2153         conn_addr->remote_addr_5 = csk->ha[5];
2154
2155         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2156                 struct l4_kwq_connect_req2 *kwqe2 =
2157                         (struct l4_kwq_connect_req2 *) wqes[1];
2158
2159                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2160                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2161                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2162
2163                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2164                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2165                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2166                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2167         }
2168         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2169
2170         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2171         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2172         conn_addr->local_tcp_port = kwqe1->src_port;
2173         conn_addr->remote_tcp_port = kwqe1->dst_port;
2174
2175         conn_addr->pmtu = kwqe3->pmtu;
2176         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2177
2178         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2179                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2180
2181         cnic_bnx2x_set_tcp_timestamp(dev,
2182                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
2183
2184         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2185                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2186         if (!ret)
2187                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2188
2189         return ret;
2190 }
2191
2192 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2193 {
2194         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2195         union l5cm_specific_data l5_data;
2196         int ret;
2197
2198         memset(&l5_data, 0, sizeof(l5_data));
2199         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2200                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2201         return ret;
2202 }
2203
2204 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2205 {
2206         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2207         union l5cm_specific_data l5_data;
2208         int ret;
2209
2210         memset(&l5_data, 0, sizeof(l5_data));
2211         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2212                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2213         return ret;
2214 }
2215 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2216 {
2217         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2218         struct l4_kcq kcqe;
2219         struct kcqe *cqes[1];
2220
2221         memset(&kcqe, 0, sizeof(kcqe));
2222         kcqe.pg_host_opaque = req->host_opaque;
2223         kcqe.pg_cid = req->host_opaque;
2224         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2225         cqes[0] = (struct kcqe *) &kcqe;
2226         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2227         return 0;
2228 }
2229
2230 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2231 {
2232         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2233         struct l4_kcq kcqe;
2234         struct kcqe *cqes[1];
2235
2236         memset(&kcqe, 0, sizeof(kcqe));
2237         kcqe.pg_host_opaque = req->pg_host_opaque;
2238         kcqe.pg_cid = req->pg_cid;
2239         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2240         cqes[0] = (struct kcqe *) &kcqe;
2241         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2242         return 0;
2243 }
2244
2245 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2246 {
2247         struct fcoe_kwqe_stat *req;
2248         struct fcoe_stat_ramrod_params *fcoe_stat;
2249         union l5cm_specific_data l5_data;
2250         struct cnic_local *cp = dev->cnic_priv;
2251         int ret;
2252         u32 cid;
2253
2254         req = (struct fcoe_kwqe_stat *) kwqe;
2255         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2256
2257         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2258         if (!fcoe_stat)
2259                 return -ENOMEM;
2260
2261         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2262         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2263
2264         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2265                                   FCOE_CONNECTION_TYPE, &l5_data);
2266         return ret;
2267 }
2268
2269 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2270                                  u32 num, int *work)
2271 {
2272         int ret;
2273         struct cnic_local *cp = dev->cnic_priv;
2274         u32 cid;
2275         struct fcoe_init_ramrod_params *fcoe_init;
2276         struct fcoe_kwqe_init1 *req1;
2277         struct fcoe_kwqe_init2 *req2;
2278         struct fcoe_kwqe_init3 *req3;
2279         union l5cm_specific_data l5_data;
2280
2281         if (num < 3) {
2282                 *work = num;
2283                 return -EINVAL;
2284         }
2285         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2286         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2287         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2288         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2289                 *work = 1;
2290                 return -EINVAL;
2291         }
2292         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2293                 *work = 2;
2294                 return -EINVAL;
2295         }
2296
2297         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2298                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2299                 return -ENOMEM;
2300         }
2301         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2302         if (!fcoe_init)
2303                 return -ENOMEM;
2304
2305         memset(fcoe_init, 0, sizeof(*fcoe_init));
2306         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2307         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2308         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2309         fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2310         fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2311         fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2312
2313         fcoe_init->sb_num = cp->status_blk_num;
2314         fcoe_init->eq_prod = MAX_KCQ_IDX;
2315         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2316         cp->kcq2.sw_prod_idx = 0;
2317
2318         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2319         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2320                                   FCOE_CONNECTION_TYPE, &l5_data);
2321         *work = 3;
2322         return ret;
2323 }
2324
2325 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2326                                  u32 num, int *work)
2327 {
2328         int ret = 0;
2329         u32 cid = -1, l5_cid;
2330         struct cnic_local *cp = dev->cnic_priv;
2331         struct fcoe_kwqe_conn_offload1 *req1;
2332         struct fcoe_kwqe_conn_offload2 *req2;
2333         struct fcoe_kwqe_conn_offload3 *req3;
2334         struct fcoe_kwqe_conn_offload4 *req4;
2335         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2336         struct cnic_context *ctx;
2337         struct fcoe_context *fctx;
2338         struct regpair ctx_addr;
2339         union l5cm_specific_data l5_data;
2340         struct fcoe_kcqe kcqe;
2341         struct kcqe *cqes[1];
2342
2343         if (num < 4) {
2344                 *work = num;
2345                 return -EINVAL;
2346         }
2347         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2348         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2349         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2350         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2351
2352         *work = 4;
2353
2354         l5_cid = req1->fcoe_conn_id;
2355         if (l5_cid >= dev->max_fcoe_conn)
2356                 goto err_reply;
2357
2358         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2359
2360         ctx = &cp->ctx_tbl[l5_cid];
2361         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2362                 goto err_reply;
2363
2364         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2365         if (ret) {
2366                 ret = 0;
2367                 goto err_reply;
2368         }
2369         cid = ctx->cid;
2370
2371         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2372         if (fctx) {
2373                 u32 hw_cid = BNX2X_HW_CID(cp, cid);
2374                 u32 val;
2375
2376                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2377                                              FCOE_CONNECTION_TYPE);
2378                 fctx->xstorm_ag_context.cdu_reserved = val;
2379                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2380                                              FCOE_CONNECTION_TYPE);
2381                 fctx->ustorm_ag_context.cdu_usage = val;
2382         }
2383         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2384                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2385                 goto err_reply;
2386         }
2387         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2388         if (!fcoe_offload)
2389                 goto err_reply;
2390
2391         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2392         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2393         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2394         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2395         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2396
2397         cid = BNX2X_HW_CID(cp, cid);
2398         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2399                                   FCOE_CONNECTION_TYPE, &l5_data);
2400         if (!ret)
2401                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2402
2403         return ret;
2404
2405 err_reply:
2406         if (cid != -1)
2407                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2408
2409         memset(&kcqe, 0, sizeof(kcqe));
2410         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2411         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2412         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2413
2414         cqes[0] = (struct kcqe *) &kcqe;
2415         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2416         return ret;
2417 }
2418
2419 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2420 {
2421         struct fcoe_kwqe_conn_enable_disable *req;
2422         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2423         union l5cm_specific_data l5_data;
2424         int ret;
2425         u32 cid, l5_cid;
2426         struct cnic_local *cp = dev->cnic_priv;
2427
2428         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2429         cid = req->context_id;
2430         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2431
2432         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2433                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2434                 return -ENOMEM;
2435         }
2436         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2437         if (!fcoe_enable)
2438                 return -ENOMEM;
2439
2440         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2441         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2442         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2443                                   FCOE_CONNECTION_TYPE, &l5_data);
2444         return ret;
2445 }
2446
2447 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2448 {
2449         struct fcoe_kwqe_conn_enable_disable *req;
2450         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2451         union l5cm_specific_data l5_data;
2452         int ret;
2453         u32 cid, l5_cid;
2454         struct cnic_local *cp = dev->cnic_priv;
2455
2456         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2457         cid = req->context_id;
2458         l5_cid = req->conn_id;
2459         if (l5_cid >= dev->max_fcoe_conn)
2460                 return -EINVAL;
2461
2462         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2463
2464         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2465                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2466                 return -ENOMEM;
2467         }
2468         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2469         if (!fcoe_disable)
2470                 return -ENOMEM;
2471
2472         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2473         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2474         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2475                                   FCOE_CONNECTION_TYPE, &l5_data);
2476         return ret;
2477 }
2478
2479 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2480 {
2481         struct fcoe_kwqe_conn_destroy *req;
2482         union l5cm_specific_data l5_data;
2483         int ret;
2484         u32 cid, l5_cid;
2485         struct cnic_local *cp = dev->cnic_priv;
2486         struct cnic_context *ctx;
2487         struct fcoe_kcqe kcqe;
2488         struct kcqe *cqes[1];
2489
2490         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2491         cid = req->context_id;
2492         l5_cid = req->conn_id;
2493         if (l5_cid >= dev->max_fcoe_conn)
2494                 return -EINVAL;
2495
2496         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2497
2498         ctx = &cp->ctx_tbl[l5_cid];
2499
2500         init_waitqueue_head(&ctx->waitq);
2501         ctx->wait_cond = 0;
2502
2503         memset(&kcqe, 0, sizeof(kcqe));
2504         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2505         memset(&l5_data, 0, sizeof(l5_data));
2506         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2507                                   FCOE_CONNECTION_TYPE, &l5_data);
2508         if (ret == 0) {
2509                 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2510                 if (ctx->wait_cond)
2511                         kcqe.completion_status = 0;
2512         }
2513
2514         set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2515         queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2516
2517         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2518         kcqe.fcoe_conn_id = req->conn_id;
2519         kcqe.fcoe_conn_context_id = cid;
2520
2521         cqes[0] = (struct kcqe *) &kcqe;
2522         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2523         return ret;
2524 }
2525
2526 static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2527 {
2528         struct cnic_local *cp = dev->cnic_priv;
2529         u32 i;
2530
2531         for (i = start_cid; i < cp->max_cid_space; i++) {
2532                 struct cnic_context *ctx = &cp->ctx_tbl[i];
2533                 int j;
2534
2535                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2536                         msleep(10);
2537
2538                 for (j = 0; j < 5; j++) {
2539                         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2540                                 break;
2541                         msleep(20);
2542                 }
2543
2544                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2545                         netdev_warn(dev->netdev, "CID %x not deleted\n",
2546                                    ctx->cid);
2547         }
2548 }
2549
2550 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2551 {
2552         struct fcoe_kwqe_destroy *req;
2553         union l5cm_specific_data l5_data;
2554         struct cnic_local *cp = dev->cnic_priv;
2555         int ret;
2556         u32 cid;
2557
2558         cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2559
2560         req = (struct fcoe_kwqe_destroy *) kwqe;
2561         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2562
2563         memset(&l5_data, 0, sizeof(l5_data));
2564         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2565                                   FCOE_CONNECTION_TYPE, &l5_data);
2566         return ret;
2567 }
2568
2569 static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2570 {
2571         struct cnic_local *cp = dev->cnic_priv;
2572         struct kcqe kcqe;
2573         struct kcqe *cqes[1];
2574         u32 cid;
2575         u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2576         u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2577         u32 kcqe_op;
2578         int ulp_type;
2579
2580         cid = kwqe->kwqe_info0;
2581         memset(&kcqe, 0, sizeof(kcqe));
2582
2583         if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2584                 u32 l5_cid = 0;
2585
2586                 ulp_type = CNIC_ULP_FCOE;
2587                 if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2588                         struct fcoe_kwqe_conn_enable_disable *req;
2589
2590                         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2591                         kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2592                         cid = req->context_id;
2593                         l5_cid = req->conn_id;
2594                 } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2595                         kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2596                 } else {
2597                         return;
2598                 }
2599                 kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2600                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2601                 kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2602                 kcqe.kcqe_info2 = cid;
2603                 kcqe.kcqe_info0 = l5_cid;
2604
2605         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2606                 ulp_type = CNIC_ULP_ISCSI;
2607                 if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2608                         cid = kwqe->kwqe_info1;
2609
2610                 kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2611                 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2612                 kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2613                 kcqe.kcqe_info2 = cid;
2614                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2615
2616         } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2617                 struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2618
2619                 ulp_type = CNIC_ULP_L4;
2620                 if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2621                         kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2622                 else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2623                         kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2624                 else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2625                         kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2626                 else
2627                         return;
2628
2629                 kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2630                                     KCQE_FLAGS_LAYER_MASK_L4;
2631                 l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2632                 l4kcqe->cid = cid;
2633                 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2634         } else {
2635                 return;
2636         }
2637
2638         cqes[0] = &kcqe;
2639         cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2640 }
2641
2642 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2643                                          struct kwqe *wqes[], u32 num_wqes)
2644 {
2645         int i, work, ret;
2646         u32 opcode;
2647         struct kwqe *kwqe;
2648
2649         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2650                 return -EAGAIN;         /* bnx2 is down */
2651
2652         for (i = 0; i < num_wqes; ) {
2653                 kwqe = wqes[i];
2654                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2655                 work = 1;
2656
2657                 switch (opcode) {
2658                 case ISCSI_KWQE_OPCODE_INIT1:
2659                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2660                         break;
2661                 case ISCSI_KWQE_OPCODE_INIT2:
2662                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2663                         break;
2664                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2665                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2666                                                      num_wqes - i, &work);
2667                         break;
2668                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2669                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2670                         break;
2671                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2672                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2673                         break;
2674                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2675                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2676                                                  &work);
2677                         break;
2678                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2679                         ret = cnic_bnx2x_close(dev, kwqe);
2680                         break;
2681                 case L4_KWQE_OPCODE_VALUE_RESET:
2682                         ret = cnic_bnx2x_reset(dev, kwqe);
2683                         break;
2684                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2685                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2686                         break;
2687                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2688                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2689                         break;
2690                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2691                         ret = 0;
2692                         break;
2693                 default:
2694                         ret = 0;
2695                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2696                                    opcode);
2697                         break;
2698                 }
2699                 if (ret < 0) {
2700                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2701                                    opcode);
2702
2703                         /* Possibly bnx2x parity error, send completion
2704                          * to ulp drivers with error code to speed up
2705                          * cleanup and reset recovery.
2706                          */
2707                         if (ret == -EIO || ret == -EAGAIN)
2708                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2709                 }
2710                 i += work;
2711         }
2712         return 0;
2713 }
2714
2715 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2716                                         struct kwqe *wqes[], u32 num_wqes)
2717 {
2718         struct cnic_local *cp = dev->cnic_priv;
2719         int i, work, ret;
2720         u32 opcode;
2721         struct kwqe *kwqe;
2722
2723         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2724                 return -EAGAIN;         /* bnx2 is down */
2725
2726         if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
2727                 return -EINVAL;
2728
2729         for (i = 0; i < num_wqes; ) {
2730                 kwqe = wqes[i];
2731                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2732                 work = 1;
2733
2734                 switch (opcode) {
2735                 case FCOE_KWQE_OPCODE_INIT1:
2736                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2737                                                     num_wqes - i, &work);
2738                         break;
2739                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2740                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2741                                                     num_wqes - i, &work);
2742                         break;
2743                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2744                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2745                         break;
2746                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2747                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2748                         break;
2749                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2750                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2751                         break;
2752                 case FCOE_KWQE_OPCODE_DESTROY:
2753                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2754                         break;
2755                 case FCOE_KWQE_OPCODE_STAT:
2756                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2757                         break;
2758                 default:
2759                         ret = 0;
2760                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2761                                    opcode);
2762                         break;
2763                 }
2764                 if (ret < 0) {
2765                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2766                                    opcode);
2767
2768                         /* Possibly bnx2x parity error, send completion
2769                          * to ulp drivers with error code to speed up
2770                          * cleanup and reset recovery.
2771                          */
2772                         if (ret == -EIO || ret == -EAGAIN)
2773                                 cnic_bnx2x_kwqe_err(dev, kwqe);
2774                 }
2775                 i += work;
2776         }
2777         return 0;
2778 }
2779
2780 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2781                                    u32 num_wqes)
2782 {
2783         int ret = -EINVAL;
2784         u32 layer_code;
2785
2786         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2787                 return -EAGAIN;         /* bnx2x is down */
2788
2789         if (!num_wqes)
2790                 return 0;
2791
2792         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2793         switch (layer_code) {
2794         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2795         case KWQE_FLAGS_LAYER_MASK_L4:
2796         case KWQE_FLAGS_LAYER_MASK_L2:
2797                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2798                 break;
2799
2800         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2801                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2802                 break;
2803         }
2804         return ret;
2805 }
2806
2807 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2808 {
2809         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2810                 return KCQE_FLAGS_LAYER_MASK_L4;
2811
2812         return opflag & KCQE_FLAGS_LAYER_MASK;
2813 }
2814
2815 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2816 {
2817         struct cnic_local *cp = dev->cnic_priv;
2818         int i, j, comp = 0;
2819
2820         i = 0;
2821         j = 1;
2822         while (num_cqes) {
2823                 struct cnic_ulp_ops *ulp_ops;
2824                 int ulp_type;
2825                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2826                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2827
2828                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2829                         comp++;
2830
2831                 while (j < num_cqes) {
2832                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2833
2834                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2835                                 break;
2836
2837                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2838                                 comp++;
2839                         j++;
2840                 }
2841
2842                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2843                         ulp_type = CNIC_ULP_RDMA;
2844                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2845                         ulp_type = CNIC_ULP_ISCSI;
2846                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2847                         ulp_type = CNIC_ULP_FCOE;
2848                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2849                         ulp_type = CNIC_ULP_L4;
2850                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2851                         goto end;
2852                 else {
2853                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2854                                    kcqe_op_flag);
2855                         goto end;
2856                 }
2857
2858                 rcu_read_lock();
2859                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2860                 if (likely(ulp_ops)) {
2861                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2862                                                   cp->completed_kcq + i, j);
2863                 }
2864                 rcu_read_unlock();
2865 end:
2866                 num_cqes -= j;
2867                 i += j;
2868                 j = 1;
2869         }
2870         if (unlikely(comp))
2871                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2872 }
2873
2874 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2875 {
2876         struct cnic_local *cp = dev->cnic_priv;
2877         u16 i, ri, hw_prod, last;
2878         struct kcqe *kcqe;
2879         int kcqe_cnt = 0, last_cnt = 0;
2880
2881         i = ri = last = info->sw_prod_idx;
2882         ri &= MAX_KCQ_IDX;
2883         hw_prod = *info->hw_prod_idx_ptr;
2884         hw_prod = info->hw_idx(hw_prod);
2885
2886         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2887                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2888                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2889                 i = info->next_idx(i);
2890                 ri = i & MAX_KCQ_IDX;
2891                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2892                         last_cnt = kcqe_cnt;
2893                         last = i;
2894                 }
2895         }
2896
2897         info->sw_prod_idx = last;
2898         return last_cnt;
2899 }
2900
2901 static int cnic_l2_completion(struct cnic_local *cp)
2902 {
2903         u16 hw_cons, sw_cons;
2904         struct cnic_uio_dev *udev = cp->udev;
2905         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2906                                         (udev->l2_ring + (2 * BNX2_PAGE_SIZE));
2907         u32 cmd;
2908         int comp = 0;
2909
2910         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2911                 return 0;
2912
2913         hw_cons = *cp->rx_cons_ptr;
2914         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2915                 hw_cons++;
2916
2917         sw_cons = cp->rx_cons;
2918         while (sw_cons != hw_cons) {
2919                 u8 cqe_fp_flags;
2920
2921                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2922                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2923                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2924                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2925                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2926                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2927                             cmd == RAMROD_CMD_ID_ETH_HALT)
2928                                 comp++;
2929                 }
2930                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2931         }
2932         return comp;
2933 }
2934
2935 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2936 {
2937         u16 rx_cons, tx_cons;
2938         int comp = 0;
2939
2940         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2941                 return;
2942
2943         rx_cons = *cp->rx_cons_ptr;
2944         tx_cons = *cp->tx_cons_ptr;
2945         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2946                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2947                         comp = cnic_l2_completion(cp);
2948
2949                 cp->tx_cons = tx_cons;
2950                 cp->rx_cons = rx_cons;
2951
2952                 if (cp->udev)
2953                         uio_event_notify(&cp->udev->cnic_uinfo);
2954         }
2955         if (comp)
2956                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2957 }
2958
2959 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2960 {
2961         struct cnic_local *cp = dev->cnic_priv;
2962         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2963         int kcqe_cnt;
2964
2965         /* status block index must be read before reading other fields */
2966         rmb();
2967         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2968
2969         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2970
2971                 service_kcqes(dev, kcqe_cnt);
2972
2973                 /* Tell compiler that status_blk fields can change. */
2974                 barrier();
2975                 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2976                 /* status block index must be read first */
2977                 rmb();
2978                 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2979         }
2980
2981         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2982
2983         cnic_chk_pkt_rings(cp);
2984
2985         return status_idx;
2986 }
2987
2988 static int cnic_service_bnx2(void *data, void *status_blk)
2989 {
2990         struct cnic_dev *dev = data;
2991
2992         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2993                 struct status_block *sblk = status_blk;
2994
2995                 return sblk->status_idx;
2996         }
2997
2998         return cnic_service_bnx2_queues(dev);
2999 }
3000
3001 static void cnic_service_bnx2_msix(unsigned long data)
3002 {
3003         struct cnic_dev *dev = (struct cnic_dev *) data;
3004         struct cnic_local *cp = dev->cnic_priv;
3005
3006         cp->last_status_idx = cnic_service_bnx2_queues(dev);
3007
3008         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3009                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3010 }
3011
3012 static void cnic_doirq(struct cnic_dev *dev)
3013 {
3014         struct cnic_local *cp = dev->cnic_priv;
3015
3016         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3017                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
3018
3019                 prefetch(cp->status_blk.gen);
3020                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
3021
3022                 tasklet_schedule(&cp->cnic_irq_task);
3023         }
3024 }
3025
3026 static irqreturn_t cnic_irq(int irq, void *dev_instance)
3027 {
3028         struct cnic_dev *dev = dev_instance;
3029         struct cnic_local *cp = dev->cnic_priv;
3030
3031         if (cp->ack_int)
3032                 cp->ack_int(dev);
3033
3034         cnic_doirq(dev);
3035
3036         return IRQ_HANDLED;
3037 }
3038
3039 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
3040                                       u16 index, u8 op, u8 update)
3041 {
3042         struct cnic_local *cp = dev->cnic_priv;
3043         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
3044                        COMMAND_REG_INT_ACK);
3045         struct igu_ack_register igu_ack;
3046
3047         igu_ack.status_block_index = index;
3048         igu_ack.sb_id_and_flags =
3049                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
3050                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3051                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3052                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3053
3054         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3055 }
3056
3057 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3058                             u16 index, u8 op, u8 update)
3059 {
3060         struct igu_regular cmd_data;
3061         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3062
3063         cmd_data.sb_id_and_flags =
3064                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3065                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3066                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
3067                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3068
3069
3070         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3071 }
3072
3073 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3074 {
3075         struct cnic_local *cp = dev->cnic_priv;
3076
3077         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3078                            IGU_INT_DISABLE, 0);
3079 }
3080
3081 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3082 {
3083         struct cnic_local *cp = dev->cnic_priv;
3084
3085         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3086                         IGU_INT_DISABLE, 0);
3087 }
3088
3089 static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
3090 {
3091         struct cnic_local *cp = dev->cnic_priv;
3092
3093         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
3094                            IGU_INT_ENABLE, 1);
3095 }
3096
3097 static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
3098 {
3099         struct cnic_local *cp = dev->cnic_priv;
3100
3101         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
3102                         IGU_INT_ENABLE, 1);
3103 }
3104
3105 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3106 {
3107         u32 last_status = *info->status_idx_ptr;
3108         int kcqe_cnt;
3109
3110         /* status block index must be read before reading the KCQ */
3111         rmb();
3112         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3113
3114                 service_kcqes(dev, kcqe_cnt);
3115
3116                 /* Tell compiler that sblk fields can change. */
3117                 barrier();
3118
3119                 last_status = *info->status_idx_ptr;
3120                 /* status block index must be read before reading the KCQ */
3121                 rmb();
3122         }
3123         return last_status;
3124 }
3125
3126 static void cnic_service_bnx2x_bh(unsigned long data)
3127 {
3128         struct cnic_dev *dev = (struct cnic_dev *) data;
3129         struct cnic_local *cp = dev->cnic_priv;
3130         u32 status_idx, new_status_idx;
3131
3132         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3133                 return;
3134
3135         while (1) {
3136                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3137
3138                 CNIC_WR16(dev, cp->kcq1.io_addr,
3139                           cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3140
3141                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE) {
3142                         cp->arm_int(dev, status_idx);
3143                         break;
3144                 }
3145
3146                 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3147
3148                 if (new_status_idx != status_idx)
3149                         continue;
3150
3151                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3152                           MAX_KCQ_IDX);
3153
3154                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3155                                 status_idx, IGU_INT_ENABLE, 1);
3156
3157                 break;
3158         }
3159 }
3160
3161 static int cnic_service_bnx2x(void *data, void *status_blk)
3162 {
3163         struct cnic_dev *dev = data;
3164         struct cnic_local *cp = dev->cnic_priv;
3165
3166         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3167                 cnic_doirq(dev);
3168
3169         cnic_chk_pkt_rings(cp);
3170
3171         return 0;
3172 }
3173
3174 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3175 {
3176         struct cnic_ulp_ops *ulp_ops;
3177
3178         if (if_type == CNIC_ULP_ISCSI)
3179                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3180
3181         mutex_lock(&cnic_lock);
3182         ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3183                                             lockdep_is_held(&cnic_lock));
3184         if (!ulp_ops) {
3185                 mutex_unlock(&cnic_lock);
3186                 return;
3187         }
3188         set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3189         mutex_unlock(&cnic_lock);
3190
3191         if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3192                 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3193
3194         clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3195 }
3196
3197 static void cnic_ulp_stop(struct cnic_dev *dev)
3198 {
3199         struct cnic_local *cp = dev->cnic_priv;
3200         int if_type;
3201
3202         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3203                 cnic_ulp_stop_one(cp, if_type);
3204 }
3205
3206 static void cnic_ulp_start(struct cnic_dev *dev)
3207 {
3208         struct cnic_local *cp = dev->cnic_priv;
3209         int if_type;
3210
3211         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3212                 struct cnic_ulp_ops *ulp_ops;
3213
3214                 mutex_lock(&cnic_lock);
3215                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3216                                                     lockdep_is_held(&cnic_lock));
3217                 if (!ulp_ops || !ulp_ops->cnic_start) {
3218                         mutex_unlock(&cnic_lock);
3219                         continue;
3220                 }
3221                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3222                 mutex_unlock(&cnic_lock);
3223
3224                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3225                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3226
3227                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3228         }
3229 }
3230
3231 static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3232 {
3233         struct cnic_local *cp = dev->cnic_priv;
3234         struct cnic_ulp_ops *ulp_ops;
3235         int rc;
3236
3237         mutex_lock(&cnic_lock);
3238         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
3239         if (ulp_ops && ulp_ops->cnic_get_stats)
3240                 rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3241         else
3242                 rc = -ENODEV;
3243         mutex_unlock(&cnic_lock);
3244         return rc;
3245 }
3246
3247 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3248 {
3249         struct cnic_dev *dev = data;
3250         int ulp_type = CNIC_ULP_ISCSI;
3251
3252         switch (info->cmd) {
3253         case CNIC_CTL_STOP_CMD:
3254                 cnic_hold(dev);
3255
3256                 cnic_ulp_stop(dev);
3257                 cnic_stop_hw(dev);
3258
3259                 cnic_put(dev);
3260                 break;
3261         case CNIC_CTL_START_CMD:
3262                 cnic_hold(dev);
3263
3264                 if (!cnic_start_hw(dev))
3265                         cnic_ulp_start(dev);
3266
3267                 cnic_put(dev);
3268                 break;
3269         case CNIC_CTL_STOP_ISCSI_CMD: {
3270                 struct cnic_local *cp = dev->cnic_priv;
3271                 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3272                 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3273                 break;
3274         }
3275         case CNIC_CTL_COMPLETION_CMD: {
3276                 struct cnic_ctl_completion *comp = &info->data.comp;
3277                 u32 cid = BNX2X_SW_CID(comp->cid);
3278                 u32 l5_cid;
3279                 struct cnic_local *cp = dev->cnic_priv;
3280
3281                 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
3282                         break;
3283
3284                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3285                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3286
3287                         if (unlikely(comp->error)) {
3288                                 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3289                                 netdev_err(dev->netdev,
3290                                            "CID %x CFC delete comp error %x\n",
3291                                            cid, comp->error);
3292                         }
3293
3294                         ctx->wait_cond = 1;
3295                         wake_up(&ctx->waitq);
3296                 }
3297                 break;
3298         }
3299         case CNIC_CTL_FCOE_STATS_GET_CMD:
3300                 ulp_type = CNIC_ULP_FCOE;
3301                 /* fall through */
3302         case CNIC_CTL_ISCSI_STATS_GET_CMD:
3303                 cnic_hold(dev);
3304                 cnic_copy_ulp_stats(dev, ulp_type);
3305                 cnic_put(dev);
3306                 break;
3307
3308         default:
3309                 return -EINVAL;
3310         }
3311         return 0;
3312 }
3313
3314 static void cnic_ulp_init(struct cnic_dev *dev)
3315 {
3316         int i;
3317         struct cnic_local *cp = dev->cnic_priv;
3318
3319         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3320                 struct cnic_ulp_ops *ulp_ops;
3321
3322                 mutex_lock(&cnic_lock);
3323                 ulp_ops = cnic_ulp_tbl_prot(i);
3324                 if (!ulp_ops || !ulp_ops->cnic_init) {
3325                         mutex_unlock(&cnic_lock);
3326                         continue;
3327                 }
3328                 ulp_get(ulp_ops);
3329                 mutex_unlock(&cnic_lock);
3330
3331                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3332                         ulp_ops->cnic_init(dev);
3333
3334                 ulp_put(ulp_ops);
3335         }
3336 }
3337
3338 static void cnic_ulp_exit(struct cnic_dev *dev)
3339 {
3340         int i;
3341         struct cnic_local *cp = dev->cnic_priv;
3342
3343         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3344                 struct cnic_ulp_ops *ulp_ops;
3345
3346                 mutex_lock(&cnic_lock);
3347                 ulp_ops = cnic_ulp_tbl_prot(i);
3348                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3349                         mutex_unlock(&cnic_lock);
3350                         continue;
3351                 }
3352                 ulp_get(ulp_ops);
3353                 mutex_unlock(&cnic_lock);
3354
3355                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3356                         ulp_ops->cnic_exit(dev);
3357
3358                 ulp_put(ulp_ops);
3359         }
3360 }
3361
3362 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3363 {
3364         struct cnic_dev *dev = csk->dev;
3365         struct l4_kwq_offload_pg *l4kwqe;
3366         struct kwqe *wqes[1];
3367
3368         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3369         memset(l4kwqe, 0, sizeof(*l4kwqe));
3370         wqes[0] = (struct kwqe *) l4kwqe;
3371
3372         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3373         l4kwqe->flags =
3374                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3375         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3376
3377         l4kwqe->da0 = csk->ha[0];
3378         l4kwqe->da1 = csk->ha[1];
3379         l4kwqe->da2 = csk->ha[2];
3380         l4kwqe->da3 = csk->ha[3];
3381         l4kwqe->da4 = csk->ha[4];
3382         l4kwqe->da5 = csk->ha[5];
3383
3384         l4kwqe->sa0 = dev->mac_addr[0];
3385         l4kwqe->sa1 = dev->mac_addr[1];
3386         l4kwqe->sa2 = dev->mac_addr[2];
3387         l4kwqe->sa3 = dev->mac_addr[3];
3388         l4kwqe->sa4 = dev->mac_addr[4];
3389         l4kwqe->sa5 = dev->mac_addr[5];
3390
3391         l4kwqe->etype = ETH_P_IP;
3392         l4kwqe->ipid_start = DEF_IPID_START;
3393         l4kwqe->host_opaque = csk->l5_cid;
3394
3395         if (csk->vlan_id) {
3396                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3397                 l4kwqe->vlan_tag = csk->vlan_id;
3398                 l4kwqe->l2hdr_nbytes += 4;
3399         }
3400
3401         return dev->submit_kwqes(dev, wqes, 1);
3402 }
3403
3404 static int cnic_cm_update_pg(struct cnic_sock *csk)
3405 {
3406         struct cnic_dev *dev = csk->dev;
3407         struct l4_kwq_update_pg *l4kwqe;
3408         struct kwqe *wqes[1];
3409
3410         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3411         memset(l4kwqe, 0, sizeof(*l4kwqe));
3412         wqes[0] = (struct kwqe *) l4kwqe;
3413
3414         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3415         l4kwqe->flags =
3416                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3417         l4kwqe->pg_cid = csk->pg_cid;
3418
3419         l4kwqe->da0 = csk->ha[0];
3420         l4kwqe->da1 = csk->ha[1];
3421         l4kwqe->da2 = csk->ha[2];
3422         l4kwqe->da3 = csk->ha[3];
3423         l4kwqe->da4 = csk->ha[4];
3424         l4kwqe->da5 = csk->ha[5];
3425
3426         l4kwqe->pg_host_opaque = csk->l5_cid;
3427         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3428
3429         return dev->submit_kwqes(dev, wqes, 1);
3430 }
3431
3432 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3433 {
3434         struct cnic_dev *dev = csk->dev;
3435         struct l4_kwq_upload *l4kwqe;
3436         struct kwqe *wqes[1];
3437
3438         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3439         memset(l4kwqe, 0, sizeof(*l4kwqe));
3440         wqes[0] = (struct kwqe *) l4kwqe;
3441
3442         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3443         l4kwqe->flags =
3444                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3445         l4kwqe->cid = csk->pg_cid;
3446
3447         return dev->submit_kwqes(dev, wqes, 1);
3448 }
3449
3450 static int cnic_cm_conn_req(struct cnic_sock *csk)
3451 {
3452         struct cnic_dev *dev = csk->dev;
3453         struct l4_kwq_connect_req1 *l4kwqe1;
3454         struct l4_kwq_connect_req2 *l4kwqe2;
3455         struct l4_kwq_connect_req3 *l4kwqe3;
3456         struct kwqe *wqes[3];
3457         u8 tcp_flags = 0;
3458         int num_wqes = 2;
3459
3460         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3461         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3462         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3463         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3464         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3465         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3466
3467         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3468         l4kwqe3->flags =
3469                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3470         l4kwqe3->ka_timeout = csk->ka_timeout;
3471         l4kwqe3->ka_interval = csk->ka_interval;
3472         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3473         l4kwqe3->tos = csk->tos;
3474         l4kwqe3->ttl = csk->ttl;
3475         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3476         l4kwqe3->pmtu = csk->mtu;
3477         l4kwqe3->rcv_buf = csk->rcv_buf;
3478         l4kwqe3->snd_buf = csk->snd_buf;
3479         l4kwqe3->seed = csk->seed;
3480
3481         wqes[0] = (struct kwqe *) l4kwqe1;
3482         if (test_bit(SK_F_IPV6, &csk->flags)) {
3483                 wqes[1] = (struct kwqe *) l4kwqe2;
3484                 wqes[2] = (struct kwqe *) l4kwqe3;
3485                 num_wqes = 3;
3486
3487                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3488                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3489                 l4kwqe2->flags =
3490                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3491                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3492                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3493                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3494                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3495                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3496                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3497                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3498                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3499                                sizeof(struct tcphdr);
3500         } else {
3501                 wqes[1] = (struct kwqe *) l4kwqe3;
3502                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3503                                sizeof(struct tcphdr);
3504         }
3505
3506         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3507         l4kwqe1->flags =
3508                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3509                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3510         l4kwqe1->cid = csk->cid;
3511         l4kwqe1->pg_cid = csk->pg_cid;
3512         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3513         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3514         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3515         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3516         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3517                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3518         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3519                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3520         if (csk->tcp_flags & SK_TCP_NAGLE)
3521                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3522         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3523                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3524         if (csk->tcp_flags & SK_TCP_SACK)
3525                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3526         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3527                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3528
3529         l4kwqe1->tcp_flags = tcp_flags;
3530
3531         return dev->submit_kwqes(dev, wqes, num_wqes);
3532 }
3533
3534 static int cnic_cm_close_req(struct cnic_sock *csk)
3535 {
3536         struct cnic_dev *dev = csk->dev;
3537         struct l4_kwq_close_req *l4kwqe;
3538         struct kwqe *wqes[1];
3539
3540         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3541         memset(l4kwqe, 0, sizeof(*l4kwqe));
3542         wqes[0] = (struct kwqe *) l4kwqe;
3543
3544         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3545         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3546         l4kwqe->cid = csk->cid;
3547
3548         return dev->submit_kwqes(dev, wqes, 1);
3549 }
3550
3551 static int cnic_cm_abort_req(struct cnic_sock *csk)
3552 {
3553         struct cnic_dev *dev = csk->dev;
3554         struct l4_kwq_reset_req *l4kwqe;
3555         struct kwqe *wqes[1];
3556
3557         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3558         memset(l4kwqe, 0, sizeof(*l4kwqe));
3559         wqes[0] = (struct kwqe *) l4kwqe;
3560
3561         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3562         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3563         l4kwqe->cid = csk->cid;
3564
3565         return dev->submit_kwqes(dev, wqes, 1);
3566 }
3567
3568 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3569                           u32 l5_cid, struct cnic_sock **csk, void *context)
3570 {
3571         struct cnic_local *cp = dev->cnic_priv;
3572         struct cnic_sock *csk1;
3573
3574         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3575                 return -EINVAL;
3576
3577         if (cp->ctx_tbl) {
3578                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3579
3580                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3581                         return -EAGAIN;
3582         }
3583
3584         csk1 = &cp->csk_tbl[l5_cid];
3585         if (atomic_read(&csk1->ref_count))
3586                 return -EAGAIN;
3587
3588         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3589                 return -EBUSY;
3590
3591         csk1->dev = dev;
3592         csk1->cid = cid;
3593         csk1->l5_cid = l5_cid;
3594         csk1->ulp_type = ulp_type;
3595         csk1->context = context;
3596
3597         csk1->ka_timeout = DEF_KA_TIMEOUT;
3598         csk1->ka_interval = DEF_KA_INTERVAL;
3599         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3600         csk1->tos = DEF_TOS;
3601         csk1->ttl = DEF_TTL;
3602         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3603         csk1->rcv_buf = DEF_RCV_BUF;
3604         csk1->snd_buf = DEF_SND_BUF;
3605         csk1->seed = DEF_SEED;
3606         csk1->tcp_flags = 0;
3607
3608         *csk = csk1;
3609         return 0;
3610 }
3611
3612 static void cnic_cm_cleanup(struct cnic_sock *csk)
3613 {
3614         if (csk->src_port) {
3615                 struct cnic_dev *dev = csk->dev;
3616                 struct cnic_local *cp = dev->cnic_priv;
3617
3618                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3619                 csk->src_port = 0;
3620         }
3621 }
3622
3623 static void cnic_close_conn(struct cnic_sock *csk)
3624 {
3625         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3626                 cnic_cm_upload_pg(csk);
3627                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3628         }
3629         cnic_cm_cleanup(csk);
3630 }
3631
3632 static int cnic_cm_destroy(struct cnic_sock *csk)
3633 {
3634         if (!cnic_in_use(csk))
3635                 return -EINVAL;
3636
3637         csk_hold(csk);
3638         clear_bit(SK_F_INUSE, &csk->flags);
3639         smp_mb__after_clear_bit();
3640         while (atomic_read(&csk->ref_count) != 1)
3641                 msleep(1);
3642         cnic_cm_cleanup(csk);
3643
3644         csk->flags = 0;
3645         csk_put(csk);
3646         return 0;
3647 }
3648
3649 static inline u16 cnic_get_vlan(struct net_device *dev,
3650                                 struct net_device **vlan_dev)
3651 {
3652         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3653                 *vlan_dev = vlan_dev_real_dev(dev);
3654                 return vlan_dev_vlan_id(dev);
3655         }
3656         *vlan_dev = dev;
3657         return 0;
3658 }
3659
3660 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3661                              struct dst_entry **dst)
3662 {
3663 #if defined(CONFIG_INET)
3664         struct rtable *rt;
3665
3666         rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3667         if (!IS_ERR(rt)) {
3668                 *dst = &rt->dst;
3669                 return 0;
3670         }
3671         return PTR_ERR(rt);
3672 #else
3673         return -ENETUNREACH;
3674 #endif
3675 }
3676
3677 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3678                              struct dst_entry **dst)
3679 {
3680 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3681         struct flowi6 fl6;
3682
3683         memset(&fl6, 0, sizeof(fl6));
3684         fl6.daddr = dst_addr->sin6_addr;
3685         if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3686                 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3687
3688         *dst = ip6_route_output(&init_net, NULL, &fl6);
3689         if ((*dst)->error) {
3690                 dst_release(*dst);
3691                 *dst = NULL;
3692                 return -ENETUNREACH;
3693         } else
3694                 return 0;
3695 #endif
3696
3697         return -ENETUNREACH;
3698 }
3699
3700 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3701                                            int ulp_type)
3702 {
3703         struct cnic_dev *dev = NULL;
3704         struct dst_entry *dst;
3705         struct net_device *netdev = NULL;
3706         int err = -ENETUNREACH;
3707
3708         if (dst_addr->sin_family == AF_INET)
3709                 err = cnic_get_v4_route(dst_addr, &dst);
3710         else if (dst_addr->sin_family == AF_INET6) {
3711                 struct sockaddr_in6 *dst_addr6 =
3712                         (struct sockaddr_in6 *) dst_addr;
3713
3714                 err = cnic_get_v6_route(dst_addr6, &dst);
3715         } else
3716                 return NULL;
3717
3718         if (err)
3719                 return NULL;
3720
3721         if (!dst->dev)
3722                 goto done;
3723
3724         cnic_get_vlan(dst->dev, &netdev);
3725
3726         dev = cnic_from_netdev(netdev);
3727
3728 done:
3729         dst_release(dst);
3730         if (dev)
3731                 cnic_put(dev);
3732         return dev;
3733 }
3734
3735 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3736 {
3737         struct cnic_dev *dev = csk->dev;
3738         struct cnic_local *cp = dev->cnic_priv;
3739
3740         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3741 }
3742
3743 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3744 {
3745         struct cnic_dev *dev = csk->dev;
3746         struct cnic_local *cp = dev->cnic_priv;
3747         int is_v6, rc = 0;
3748         struct dst_entry *dst = NULL;
3749         struct net_device *realdev;
3750         __be16 local_port;
3751         u32 port_id;
3752
3753         if (saddr->local.v6.sin6_family == AF_INET6 &&
3754             saddr->remote.v6.sin6_family == AF_INET6)
3755                 is_v6 = 1;
3756         else if (saddr->local.v4.sin_family == AF_INET &&
3757                  saddr->remote.v4.sin_family == AF_INET)
3758                 is_v6 = 0;
3759         else
3760                 return -EINVAL;
3761
3762         clear_bit(SK_F_IPV6, &csk->flags);
3763
3764         if (is_v6) {
3765                 set_bit(SK_F_IPV6, &csk->flags);
3766                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3767
3768                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3769                        sizeof(struct in6_addr));
3770                 csk->dst_port = saddr->remote.v6.sin6_port;
3771                 local_port = saddr->local.v6.sin6_port;
3772
3773         } else {
3774                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3775
3776                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3777                 csk->dst_port = saddr->remote.v4.sin_port;
3778                 local_port = saddr->local.v4.sin_port;
3779         }
3780
3781         csk->vlan_id = 0;
3782         csk->mtu = dev->netdev->mtu;
3783         if (dst && dst->dev) {
3784                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3785                 if (realdev == dev->netdev) {
3786                         csk->vlan_id = vlan;
3787                         csk->mtu = dst_mtu(dst);
3788                 }
3789         }
3790
3791         port_id = be16_to_cpu(local_port);
3792         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3793             port_id < CNIC_LOCAL_PORT_MAX) {
3794                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3795                         port_id = 0;
3796         } else
3797                 port_id = 0;
3798
3799         if (!port_id) {
3800                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3801                 if (port_id == -1) {
3802                         rc = -ENOMEM;
3803                         goto err_out;
3804                 }
3805                 local_port = cpu_to_be16(port_id);
3806         }
3807         csk->src_port = local_port;
3808
3809 err_out:
3810         dst_release(dst);
3811         return rc;
3812 }
3813
3814 static void cnic_init_csk_state(struct cnic_sock *csk)
3815 {
3816         csk->state = 0;
3817         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3818         clear_bit(SK_F_CLOSING, &csk->flags);
3819 }
3820
3821 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3822 {
3823         struct cnic_local *cp = csk->dev->cnic_priv;
3824         int err = 0;
3825
3826         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3827                 return -EOPNOTSUPP;
3828
3829         if (!cnic_in_use(csk))
3830                 return -EINVAL;
3831
3832         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3833                 return -EINVAL;
3834
3835         cnic_init_csk_state(csk);
3836
3837         err = cnic_get_route(csk, saddr);
3838         if (err)
3839                 goto err_out;
3840
3841         err = cnic_resolve_addr(csk, saddr);
3842         if (!err)
3843                 return 0;
3844
3845 err_out:
3846         clear_bit(SK_F_CONNECT_START, &csk->flags);
3847         return err;
3848 }
3849
3850 static int cnic_cm_abort(struct cnic_sock *csk)
3851 {
3852         struct cnic_local *cp = csk->dev->cnic_priv;
3853         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3854
3855         if (!cnic_in_use(csk))
3856                 return -EINVAL;
3857
3858         if (cnic_abort_prep(csk))
3859                 return cnic_cm_abort_req(csk);
3860
3861         /* Getting here means that we haven't started connect, or
3862          * connect was not successful, or it has been reset by the target.
3863          */
3864
3865         cp->close_conn(csk, opcode);
3866         if (csk->state != opcode) {
3867                 /* Wait for remote reset sequence to complete */
3868                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3869                         msleep(1);
3870
3871                 return -EALREADY;
3872         }
3873
3874         return 0;
3875 }
3876
3877 static int cnic_cm_close(struct cnic_sock *csk)
3878 {
3879         if (!cnic_in_use(csk))
3880                 return -EINVAL;
3881
3882         if (cnic_close_prep(csk)) {
3883                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3884                 return cnic_cm_close_req(csk);
3885         } else {
3886                 /* Wait for remote reset sequence to complete */
3887                 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3888                         msleep(1);
3889
3890                 return -EALREADY;
3891         }
3892         return 0;
3893 }
3894
3895 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3896                            u8 opcode)
3897 {
3898         struct cnic_ulp_ops *ulp_ops;
3899         int ulp_type = csk->ulp_type;
3900
3901         rcu_read_lock();
3902         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3903         if (ulp_ops) {
3904                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3905                         ulp_ops->cm_connect_complete(csk);
3906                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3907                         ulp_ops->cm_close_complete(csk);
3908                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3909                         ulp_ops->cm_remote_abort(csk);
3910                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3911                         ulp_ops->cm_abort_complete(csk);
3912                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3913                         ulp_ops->cm_remote_close(csk);
3914         }
3915         rcu_read_unlock();
3916 }
3917
3918 static int cnic_cm_set_pg(struct cnic_sock *csk)
3919 {
3920         if (cnic_offld_prep(csk)) {
3921                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3922                         cnic_cm_update_pg(csk);
3923                 else
3924                         cnic_cm_offload_pg(csk);
3925         }
3926         return 0;
3927 }
3928
3929 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3930 {
3931         struct cnic_local *cp = dev->cnic_priv;
3932         u32 l5_cid = kcqe->pg_host_opaque;
3933         u8 opcode = kcqe->op_code;
3934         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3935
3936         csk_hold(csk);
3937         if (!cnic_in_use(csk))
3938                 goto done;
3939
3940         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3941                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3942                 goto done;
3943         }
3944         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3945         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3946                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3947                 cnic_cm_upcall(cp, csk,
3948                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3949                 goto done;
3950         }
3951
3952         csk->pg_cid = kcqe->pg_cid;
3953         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3954         cnic_cm_conn_req(csk);
3955
3956 done:
3957         csk_put(csk);
3958 }
3959
3960 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3961 {
3962         struct cnic_local *cp = dev->cnic_priv;
3963         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3964         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3965         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3966
3967         ctx->timestamp = jiffies;
3968         ctx->wait_cond = 1;
3969         wake_up(&ctx->waitq);
3970 }
3971
3972 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3973 {
3974         struct cnic_local *cp = dev->cnic_priv;
3975         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3976         u8 opcode = l4kcqe->op_code;
3977         u32 l5_cid;
3978         struct cnic_sock *csk;
3979
3980         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3981                 cnic_process_fcoe_term_conn(dev, kcqe);
3982                 return;
3983         }
3984         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3985             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3986                 cnic_cm_process_offld_pg(dev, l4kcqe);
3987                 return;
3988         }
3989
3990         l5_cid = l4kcqe->conn_id;
3991         if (opcode & 0x80)
3992                 l5_cid = l4kcqe->cid;
3993         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3994                 return;
3995
3996         csk = &cp->csk_tbl[l5_cid];
3997         csk_hold(csk);
3998
3999         if (!cnic_in_use(csk)) {
4000                 csk_put(csk);
4001                 return;
4002         }
4003
4004         switch (opcode) {
4005         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
4006                 if (l4kcqe->status != 0) {
4007                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4008                         cnic_cm_upcall(cp, csk,
4009                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
4010                 }
4011                 break;
4012         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
4013                 if (l4kcqe->status == 0)
4014                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
4015                 else if (l4kcqe->status ==
4016                          L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4017                         set_bit(SK_F_HW_ERR, &csk->flags);
4018
4019                 smp_mb__before_clear_bit();
4020                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4021                 cnic_cm_upcall(cp, csk, opcode);
4022                 break;
4023
4024         case L5CM_RAMROD_CMD_ID_CLOSE:
4025                 if (l4kcqe->status != 0) {
4026                         netdev_warn(dev->netdev, "RAMROD CLOSE compl with "
4027                                     "status 0x%x\n", l4kcqe->status);
4028                         opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
4029                         /* Fall through */
4030                 } else {
4031                         break;
4032                 }
4033         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4034         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4035         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4036         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4037         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4038                 if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4039                         set_bit(SK_F_HW_ERR, &csk->flags);
4040
4041                 cp->close_conn(csk, opcode);
4042                 break;
4043
4044         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
4045                 /* after we already sent CLOSE_REQ */
4046                 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
4047                     !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
4048                     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
4049                         cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
4050                 else
4051                         cnic_cm_upcall(cp, csk, opcode);
4052                 break;
4053         }
4054         csk_put(csk);
4055 }
4056
4057 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
4058 {
4059         struct cnic_dev *dev = data;
4060         int i;
4061
4062         for (i = 0; i < num; i++)
4063                 cnic_cm_process_kcqe(dev, kcqe[i]);
4064 }
4065
4066 static struct cnic_ulp_ops cm_ulp_ops = {
4067         .indicate_kcqes         = cnic_cm_indicate_kcqe,
4068 };
4069
4070 static void cnic_cm_free_mem(struct cnic_dev *dev)
4071 {
4072         struct cnic_local *cp = dev->cnic_priv;
4073
4074         kfree(cp->csk_tbl);
4075         cp->csk_tbl = NULL;
4076         cnic_free_id_tbl(&cp->csk_port_tbl);
4077 }
4078
4079 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
4080 {
4081         struct cnic_local *cp = dev->cnic_priv;
4082         u32 port_id;
4083
4084         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
4085                               GFP_KERNEL);
4086         if (!cp->csk_tbl)
4087                 return -ENOMEM;
4088
4089         port_id = prandom_u32();
4090         port_id %= CNIC_LOCAL_PORT_RANGE;
4091         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4092                              CNIC_LOCAL_PORT_MIN, port_id)) {
4093                 cnic_cm_free_mem(dev);
4094                 return -ENOMEM;
4095         }
4096         return 0;
4097 }
4098
4099 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
4100 {
4101         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
4102                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
4103                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
4104                 csk->state = opcode;
4105         }
4106
4107         /* 1. If event opcode matches the expected event in csk->state
4108          * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
4109          *    event
4110          * 3. If the expected event is 0, meaning the connection was never
4111          *    never established, we accept the opcode from cm_abort.
4112          */
4113         if (opcode == csk->state || csk->state == 0 ||
4114             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
4115             csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4116                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
4117                         if (csk->state == 0)
4118                                 csk->state = opcode;
4119                         return 1;
4120                 }
4121         }
4122         return 0;
4123 }
4124
4125 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
4126 {
4127         struct cnic_dev *dev = csk->dev;
4128         struct cnic_local *cp = dev->cnic_priv;
4129
4130         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
4131                 cnic_cm_upcall(cp, csk, opcode);
4132                 return;
4133         }
4134
4135         clear_bit(SK_F_CONNECT_START, &csk->flags);
4136         cnic_close_conn(csk);
4137         csk->state = opcode;
4138         cnic_cm_upcall(cp, csk, opcode);
4139 }
4140
4141 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
4142 {
4143 }
4144
4145 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
4146 {
4147         u32 seed;
4148
4149         seed = prandom_u32();
4150         cnic_ctx_wr(dev, 45, 0, seed);
4151         return 0;
4152 }
4153
4154 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
4155 {
4156         struct cnic_dev *dev = csk->dev;
4157         struct cnic_local *cp = dev->cnic_priv;
4158         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
4159         union l5cm_specific_data l5_data;
4160         u32 cmd = 0;
4161         int close_complete = 0;
4162
4163         switch (opcode) {
4164         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4165         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4166         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4167                 if (cnic_ready_to_close(csk, opcode)) {
4168                         if (test_bit(SK_F_HW_ERR, &csk->flags))
4169                                 close_complete = 1;
4170                         else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4171                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
4172                         else
4173                                 close_complete = 1;
4174                 }
4175                 break;
4176         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4177                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
4178                 break;
4179         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4180                 close_complete = 1;
4181                 break;
4182         }
4183         if (cmd) {
4184                 memset(&l5_data, 0, sizeof(l5_data));
4185
4186                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
4187                                     &l5_data);
4188         } else if (close_complete) {
4189                 ctx->timestamp = jiffies;
4190                 cnic_close_conn(csk);
4191                 cnic_cm_upcall(cp, csk, csk->state);
4192         }
4193 }
4194
4195 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
4196 {
4197         struct cnic_local *cp = dev->cnic_priv;
4198
4199         if (!cp->ctx_tbl)
4200                 return;
4201
4202         if (!netif_running(dev->netdev))
4203                 return;
4204
4205         cnic_bnx2x_delete_wait(dev, 0);
4206
4207         cancel_delayed_work(&cp->delete_task);
4208         flush_workqueue(cnic_wq);
4209
4210         if (atomic_read(&cp->iscsi_conn) != 0)
4211                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
4212                             atomic_read(&cp->iscsi_conn));
4213 }
4214
4215 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
4216 {
4217         struct cnic_local *cp = dev->cnic_priv;
4218         struct bnx2x *bp = netdev_priv(dev->netdev);
4219         u32 pfid = cp->pfid;
4220         u32 port = CNIC_PORT(cp);
4221
4222         cnic_init_bnx2x_mac(dev);
4223         cnic_bnx2x_set_tcp_timestamp(dev, 1);
4224
4225         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4226                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4227
4228         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4229                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4230         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4231                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4232                 DEF_MAX_DA_COUNT);
4233
4234         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4235                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4236         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4237                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4238         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4239                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4240         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4241                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4242
4243         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4244                 DEF_MAX_CWND);
4245         return 0;
4246 }
4247
4248 static void cnic_delete_task(struct work_struct *work)
4249 {
4250         struct cnic_local *cp;
4251         struct cnic_dev *dev;
4252         u32 i;
4253         int need_resched = 0;
4254
4255         cp = container_of(work, struct cnic_local, delete_task.work);
4256         dev = cp->dev;
4257
4258         if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4259                 struct drv_ctl_info info;
4260
4261                 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4262
4263                 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4264                 cp->ethdev->drv_ctl(dev->netdev, &info);
4265         }
4266
4267         for (i = 0; i < cp->max_cid_space; i++) {
4268                 struct cnic_context *ctx = &cp->ctx_tbl[i];
4269                 int err;
4270
4271                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4272                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4273                         continue;
4274
4275                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4276                         need_resched = 1;
4277                         continue;
4278                 }
4279
4280                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4281                         continue;
4282
4283                 err = cnic_bnx2x_destroy_ramrod(dev, i);
4284
4285                 cnic_free_bnx2x_conn_resc(dev, i);
4286                 if (!err) {
4287                         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4288                                 atomic_dec(&cp->iscsi_conn);
4289
4290                         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4291                 }
4292         }
4293
4294         if (need_resched)
4295                 queue_delayed_work(cnic_wq, &cp->delete_task,
4296                                    msecs_to_jiffies(10));
4297
4298 }
4299
4300 static int cnic_cm_open(struct cnic_dev *dev)
4301 {
4302         struct cnic_local *cp = dev->cnic_priv;
4303         int err;
4304
4305         err = cnic_cm_alloc_mem(dev);
4306         if (err)
4307                 return err;
4308
4309         err = cp->start_cm(dev);
4310
4311         if (err)
4312                 goto err_out;
4313
4314         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4315
4316         dev->cm_create = cnic_cm_create;
4317         dev->cm_destroy = cnic_cm_destroy;
4318         dev->cm_connect = cnic_cm_connect;
4319         dev->cm_abort = cnic_cm_abort;
4320         dev->cm_close = cnic_cm_close;
4321         dev->cm_select_dev = cnic_cm_select_dev;
4322
4323         cp->ulp_handle[CNIC_ULP_L4] = dev;
4324         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4325         return 0;
4326
4327 err_out:
4328         cnic_cm_free_mem(dev);
4329         return err;
4330 }
4331
4332 static int cnic_cm_shutdown(struct cnic_dev *dev)
4333 {
4334         struct cnic_local *cp = dev->cnic_priv;
4335         int i;
4336
4337         if (!cp->csk_tbl)
4338                 return 0;
4339
4340         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4341                 struct cnic_sock *csk = &cp->csk_tbl[i];
4342
4343                 clear_bit(SK_F_INUSE, &csk->flags);
4344                 cnic_cm_cleanup(csk);
4345         }
4346         cnic_cm_free_mem(dev);
4347
4348         return 0;
4349 }
4350
4351 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4352 {
4353         u32 cid_addr;
4354         int i;
4355
4356         cid_addr = GET_CID_ADDR(cid);
4357
4358         for (i = 0; i < CTX_SIZE; i += 4)
4359                 cnic_ctx_wr(dev, cid_addr, i, 0);
4360 }
4361
4362 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4363 {
4364         struct cnic_local *cp = dev->cnic_priv;
4365         int ret = 0, i;
4366         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4367
4368         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4369                 return 0;
4370
4371         for (i = 0; i < cp->ctx_blks; i++) {
4372                 int j;
4373                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4374                 u32 val;
4375
4376                 memset(cp->ctx_arr[i].ctx, 0, BNX2_PAGE_SIZE);
4377
4378                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4379                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4380                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4381                         (u64) cp->ctx_arr[i].mapping >> 32);
4382                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4383                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4384                 for (j = 0; j < 10; j++) {
4385
4386                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4387                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4388                                 break;
4389                         udelay(5);
4390                 }
4391                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4392                         ret = -EBUSY;
4393                         break;
4394                 }
4395         }
4396         return ret;
4397 }
4398
4399 static void cnic_free_irq(struct cnic_dev *dev)
4400 {
4401         struct cnic_local *cp = dev->cnic_priv;
4402         struct cnic_eth_dev *ethdev = cp->ethdev;
4403
4404         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4405                 cp->disable_int_sync(dev);
4406                 tasklet_kill(&cp->cnic_irq_task);
4407                 free_irq(ethdev->irq_arr[0].vector, dev);
4408         }
4409 }
4410
4411 static int cnic_request_irq(struct cnic_dev *dev)
4412 {
4413         struct cnic_local *cp = dev->cnic_priv;
4414         struct cnic_eth_dev *ethdev = cp->ethdev;
4415         int err;
4416
4417         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4418         if (err)
4419                 tasklet_disable(&cp->cnic_irq_task);
4420
4421         return err;
4422 }
4423
4424 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4425 {
4426         struct cnic_local *cp = dev->cnic_priv;
4427         struct cnic_eth_dev *ethdev = cp->ethdev;
4428
4429         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4430                 int err, i = 0;
4431                 int sblk_num = cp->status_blk_num;
4432                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4433                            BNX2_HC_SB_CONFIG_1;
4434
4435                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4436
4437                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4438                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4439                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4440
4441                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4442                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4443                              (unsigned long) dev);
4444                 err = cnic_request_irq(dev);
4445                 if (err)
4446                         return err;
4447
4448                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4449                        i < 10) {
4450                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4451                                 1 << (11 + sblk_num));
4452                         udelay(10);
4453                         i++;
4454                         barrier();
4455                 }
4456                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4457                         cnic_free_irq(dev);
4458                         goto failed;
4459                 }
4460
4461         } else {
4462                 struct status_block *sblk = cp->status_blk.gen;
4463                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4464                 int i = 0;
4465
4466                 while (sblk->status_completion_producer_index && i < 10) {
4467                         CNIC_WR(dev, BNX2_HC_COMMAND,
4468                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4469                         udelay(10);
4470                         i++;
4471                         barrier();
4472                 }
4473                 if (sblk->status_completion_producer_index)
4474                         goto failed;
4475
4476         }
4477         return 0;
4478
4479 failed:
4480         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4481         return -EBUSY;
4482 }
4483
4484 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4485 {
4486         struct cnic_local *cp = dev->cnic_priv;
4487         struct cnic_eth_dev *ethdev = cp->ethdev;
4488
4489         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4490                 return;
4491
4492         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4493                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4494 }
4495
4496 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4497 {
4498         struct cnic_local *cp = dev->cnic_priv;
4499         struct cnic_eth_dev *ethdev = cp->ethdev;
4500
4501         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4502                 return;
4503
4504         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4505                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4506         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4507         synchronize_irq(ethdev->irq_arr[0].vector);
4508 }
4509
4510 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4511 {
4512         struct cnic_local *cp = dev->cnic_priv;
4513         struct cnic_eth_dev *ethdev = cp->ethdev;
4514         struct cnic_uio_dev *udev = cp->udev;
4515         u32 cid_addr, tx_cid, sb_id;
4516         u32 val, offset0, offset1, offset2, offset3;
4517         int i;
4518         struct bnx2_tx_bd *txbd;
4519         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4520         struct status_block *s_blk = cp->status_blk.gen;
4521
4522         sb_id = cp->status_blk_num;
4523         tx_cid = 20;
4524         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4525         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4526                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4527
4528                 tx_cid = TX_TSS_CID + sb_id - 1;
4529                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4530                         (TX_TSS_CID << 7));
4531                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4532         }
4533         cp->tx_cons = *cp->tx_cons_ptr;
4534
4535         cid_addr = GET_CID_ADDR(tx_cid);
4536         if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
4537                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4538
4539                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4540                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4541
4542                 offset0 = BNX2_L2CTX_TYPE_XI;
4543                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4544                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4545                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4546         } else {
4547                 cnic_init_context(dev, tx_cid);
4548                 cnic_init_context(dev, tx_cid + 1);
4549
4550                 offset0 = BNX2_L2CTX_TYPE;
4551                 offset1 = BNX2_L2CTX_CMD_TYPE;
4552                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4553                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4554         }
4555         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4556         cnic_ctx_wr(dev, cid_addr, offset0, val);
4557
4558         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4559         cnic_ctx_wr(dev, cid_addr, offset1, val);
4560
4561         txbd = udev->l2_ring;
4562
4563         buf_map = udev->l2_buf_map;
4564         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i++, txbd++) {
4565                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4566                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4567         }
4568         val = (u64) ring_map >> 32;
4569         cnic_ctx_wr(dev, cid_addr, offset2, val);
4570         txbd->tx_bd_haddr_hi = val;
4571
4572         val = (u64) ring_map & 0xffffffff;
4573         cnic_ctx_wr(dev, cid_addr, offset3, val);
4574         txbd->tx_bd_haddr_lo = val;
4575 }
4576
4577 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4578 {
4579         struct cnic_local *cp = dev->cnic_priv;
4580         struct cnic_eth_dev *ethdev = cp->ethdev;
4581         struct cnic_uio_dev *udev = cp->udev;
4582         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4583         int i;
4584         struct bnx2_rx_bd *rxbd;
4585         struct status_block *s_blk = cp->status_blk.gen;
4586         dma_addr_t ring_map = udev->l2_ring_map;
4587
4588         sb_id = cp->status_blk_num;
4589         cnic_init_context(dev, 2);
4590         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4591         coal_reg = BNX2_HC_COMMAND;
4592         coal_val = CNIC_RD(dev, coal_reg);
4593         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4594                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4595
4596                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4597                 coal_reg = BNX2_HC_COALESCE_NOW;
4598                 coal_val = 1 << (11 + sb_id);
4599         }
4600         i = 0;
4601         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4602                 CNIC_WR(dev, coal_reg, coal_val);
4603                 udelay(10);
4604                 i++;
4605                 barrier();
4606         }
4607         cp->rx_cons = *cp->rx_cons_ptr;
4608
4609         cid_addr = GET_CID_ADDR(2);
4610         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4611               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4612         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4613
4614         if (sb_id == 0)
4615                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4616         else
4617                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4618         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4619
4620         rxbd = udev->l2_ring + BNX2_PAGE_SIZE;
4621         for (i = 0; i < BNX2_MAX_RX_DESC_CNT; i++, rxbd++) {
4622                 dma_addr_t buf_map;
4623                 int n = (i % cp->l2_rx_ring_size) + 1;
4624
4625                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4626                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4627                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4628                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4629                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4630         }
4631         val = (u64) (ring_map + BNX2_PAGE_SIZE) >> 32;
4632         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4633         rxbd->rx_bd_haddr_hi = val;
4634
4635         val = (u64) (ring_map + BNX2_PAGE_SIZE) & 0xffffffff;
4636         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4637         rxbd->rx_bd_haddr_lo = val;
4638
4639         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4640         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4641 }
4642
4643 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4644 {
4645         struct kwqe *wqes[1], l2kwqe;
4646
4647         memset(&l2kwqe, 0, sizeof(l2kwqe));
4648         wqes[0] = &l2kwqe;
4649         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4650                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4651                                KWQE_OPCODE_SHIFT) | 2;
4652         dev->submit_kwqes(dev, wqes, 1);
4653 }
4654
4655 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4656 {
4657         struct cnic_local *cp = dev->cnic_priv;
4658         u32 val;
4659
4660         val = cp->func << 2;
4661
4662         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4663
4664         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4665                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4666         dev->mac_addr[0] = (u8) (val >> 8);
4667         dev->mac_addr[1] = (u8) val;
4668
4669         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4670
4671         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4672                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4673         dev->mac_addr[2] = (u8) (val >> 24);
4674         dev->mac_addr[3] = (u8) (val >> 16);
4675         dev->mac_addr[4] = (u8) (val >> 8);
4676         dev->mac_addr[5] = (u8) val;
4677
4678         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4679
4680         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4681         if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4682                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4683
4684         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4685         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4686         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4687 }
4688
4689 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4690 {
4691         struct cnic_local *cp = dev->cnic_priv;
4692         struct cnic_eth_dev *ethdev = cp->ethdev;
4693         struct status_block *sblk = cp->status_blk.gen;
4694         u32 val, kcq_cid_addr, kwq_cid_addr;
4695         int err;
4696
4697         cnic_set_bnx2_mac(dev);
4698
4699         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4700         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4701         if (BNX2_PAGE_BITS > 12)
4702                 val |= (12 - 8)  << 4;
4703         else
4704                 val |= (BNX2_PAGE_BITS - 8)  << 4;
4705
4706         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4707
4708         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4709         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4710         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4711
4712         err = cnic_setup_5709_context(dev, 1);
4713         if (err)
4714                 return err;
4715
4716         cnic_init_context(dev, KWQ_CID);
4717         cnic_init_context(dev, KCQ_CID);
4718
4719         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4720         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4721
4722         cp->max_kwq_idx = MAX_KWQ_IDX;
4723         cp->kwq_prod_idx = 0;
4724         cp->kwq_con_idx = 0;
4725         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4726
4727         if (BNX2_CHIP(cp) == BNX2_CHIP_5706 || BNX2_CHIP(cp) == BNX2_CHIP_5708)
4728                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4729         else
4730                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4731
4732         /* Initialize the kernel work queue context. */
4733         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4734               (BNX2_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4735         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4736
4737         val = (BNX2_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4738         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4739
4740         val = ((BNX2_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4741         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4742
4743         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4744         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4745
4746         val = (u32) cp->kwq_info.pgtbl_map;
4747         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4748
4749         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4750         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4751
4752         cp->kcq1.sw_prod_idx = 0;
4753         cp->kcq1.hw_prod_idx_ptr =
4754                 &sblk->status_completion_producer_index;
4755
4756         cp->kcq1.status_idx_ptr = &sblk->status_idx;
4757
4758         /* Initialize the kernel complete queue context. */
4759         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4760               (BNX2_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4761         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4762
4763         val = (BNX2_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4764         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4765
4766         val = ((BNX2_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4767         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4768
4769         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4770         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4771
4772         val = (u32) cp->kcq1.dma.pgtbl_map;
4773         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4774
4775         cp->int_num = 0;
4776         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4777                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4778                 u32 sb_id = cp->status_blk_num;
4779                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4780
4781                 cp->kcq1.hw_prod_idx_ptr =
4782                         &msblk->status_completion_producer_index;
4783                 cp->kcq1.status_idx_ptr = &msblk->status_idx;
4784                 cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
4785                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4786                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4787                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4788         }
4789
4790         /* Enable Commnad Scheduler notification when we write to the
4791          * host producer index of the kernel contexts. */
4792         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4793
4794         /* Enable Command Scheduler notification when we write to either
4795          * the Send Queue or Receive Queue producer indexes of the kernel
4796          * bypass contexts. */
4797         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4798         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4799
4800         /* Notify COM when the driver post an application buffer. */
4801         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4802
4803         /* Set the CP and COM doorbells.  These two processors polls the
4804          * doorbell for a non zero value before running.  This must be done
4805          * after setting up the kernel queue contexts. */
4806         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4807         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4808
4809         cnic_init_bnx2_tx_ring(dev);
4810         cnic_init_bnx2_rx_ring(dev);
4811
4812         err = cnic_init_bnx2_irq(dev);
4813         if (err) {
4814                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4815                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4816                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4817                 return err;
4818         }
4819
4820         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
4821
4822         return 0;
4823 }
4824
4825 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4826 {
4827         struct cnic_local *cp = dev->cnic_priv;
4828         struct cnic_eth_dev *ethdev = cp->ethdev;
4829         u32 start_offset = ethdev->ctx_tbl_offset;
4830         int i;
4831
4832         for (i = 0; i < cp->ctx_blks; i++) {
4833                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4834                 dma_addr_t map = ctx->mapping;
4835
4836                 if (cp->ctx_align) {
4837                         unsigned long mask = cp->ctx_align - 1;
4838
4839                         map = (map + mask) & ~mask;
4840                 }
4841
4842                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4843         }
4844 }
4845
4846 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4847 {
4848         struct cnic_local *cp = dev->cnic_priv;
4849         struct cnic_eth_dev *ethdev = cp->ethdev;
4850         int err = 0;
4851
4852         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4853                      (unsigned long) dev);
4854         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4855                 err = cnic_request_irq(dev);
4856
4857         return err;
4858 }
4859
4860 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4861                                                 u16 sb_id, u8 sb_index,
4862                                                 u8 disable)
4863 {
4864         struct bnx2x *bp = netdev_priv(dev->netdev);
4865
4866         u32 addr = BAR_CSTRORM_INTMEM +
4867                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4868                         offsetof(struct hc_status_block_data_e1x, index_data) +
4869                         sizeof(struct hc_index_data)*sb_index +
4870                         offsetof(struct hc_index_data, flags);
4871         u16 flags = CNIC_RD16(dev, addr);
4872         /* clear and set */
4873         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4874         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4875                   HC_INDEX_DATA_HC_ENABLED);
4876         CNIC_WR16(dev, addr, flags);
4877 }
4878
4879 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4880 {
4881         struct cnic_local *cp = dev->cnic_priv;
4882         struct bnx2x *bp = netdev_priv(dev->netdev);
4883         u8 sb_id = cp->status_blk_num;
4884
4885         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4886                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4887                         offsetof(struct hc_status_block_data_e1x, index_data) +
4888                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4889                         offsetof(struct hc_index_data, timeout), 64 / 4);
4890         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4891 }
4892
4893 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4894 {
4895 }
4896
4897 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4898                                     struct client_init_ramrod_data *data)
4899 {
4900         struct cnic_local *cp = dev->cnic_priv;
4901         struct cnic_uio_dev *udev = cp->udev;
4902         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4903         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4904         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4905         int i;
4906         u32 cli = cp->ethdev->iscsi_l2_client_id;
4907         u32 val;
4908
4909         memset(txbd, 0, BNX2_PAGE_SIZE);
4910
4911         buf_map = udev->l2_buf_map;
4912         for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4913                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4914                 struct eth_tx_parse_bd_e1x *pbd_e1x =
4915                         &((txbd + 1)->parse_bd_e1x);
4916                 struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2);
4917                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4918
4919                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4920                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4921                 reg_bd->addr_hi = start_bd->addr_hi;
4922                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4923                 start_bd->nbytes = cpu_to_le16(0x10);
4924                 start_bd->nbd = cpu_to_le16(3);
4925                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4926                 start_bd->general_data &= ~ETH_TX_START_BD_PARSE_NBDS;
4927                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4928
4929                 if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
4930                         pbd_e2->parsing_data = (UNICAST_ADDRESS <<
4931                                 ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT);
4932                 else
4933                         pbd_e1x->global_data = (UNICAST_ADDRESS <<
4934                                 ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT);
4935         }
4936
4937         val = (u64) ring_map >> 32;
4938         txbd->next_bd.addr_hi = cpu_to_le32(val);
4939
4940         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4941
4942         val = (u64) ring_map & 0xffffffff;
4943         txbd->next_bd.addr_lo = cpu_to_le32(val);
4944
4945         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4946
4947         /* Other ramrod params */
4948         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4949         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4950
4951         /* reset xstorm per client statistics */
4952         if (cli < MAX_STAT_COUNTER_ID) {
4953                 data->general.statistics_zero_flg = 1;
4954                 data->general.statistics_en_flg = 1;
4955                 data->general.statistics_counter_id = cli;
4956         }
4957
4958         cp->tx_cons_ptr =
4959                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4960 }
4961
4962 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4963                                     struct client_init_ramrod_data *data)
4964 {
4965         struct cnic_local *cp = dev->cnic_priv;
4966         struct cnic_uio_dev *udev = cp->udev;
4967         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4968                                 BNX2_PAGE_SIZE);
4969         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4970                                 (udev->l2_ring + (2 * BNX2_PAGE_SIZE));
4971         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4972         int i;
4973         u32 cli = cp->ethdev->iscsi_l2_client_id;
4974         int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4975         u32 val;
4976         dma_addr_t ring_map = udev->l2_ring_map;
4977
4978         /* General data */
4979         data->general.client_id = cli;
4980         data->general.activate_flg = 1;
4981         data->general.sp_client_id = cli;
4982         data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4983         data->general.func_id = cp->pfid;
4984
4985         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4986                 dma_addr_t buf_map;
4987                 int n = (i % cp->l2_rx_ring_size) + 1;
4988
4989                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4990                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4991                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4992         }
4993
4994         val = (u64) (ring_map + BNX2_PAGE_SIZE) >> 32;
4995         rxbd->addr_hi = cpu_to_le32(val);
4996         data->rx.bd_page_base.hi = cpu_to_le32(val);
4997
4998         val = (u64) (ring_map + BNX2_PAGE_SIZE) & 0xffffffff;
4999         rxbd->addr_lo = cpu_to_le32(val);
5000         data->rx.bd_page_base.lo = cpu_to_le32(val);
5001
5002         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
5003         val = (u64) (ring_map + (2 * BNX2_PAGE_SIZE)) >> 32;
5004         rxcqe->addr_hi = cpu_to_le32(val);
5005         data->rx.cqe_page_base.hi = cpu_to_le32(val);
5006
5007         val = (u64) (ring_map + (2 * BNX2_PAGE_SIZE)) & 0xffffffff;
5008         rxcqe->addr_lo = cpu_to_le32(val);
5009         data->rx.cqe_page_base.lo = cpu_to_le32(val);
5010
5011         /* Other ramrod params */
5012         data->rx.client_qzone_id = cl_qzone_id;
5013         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
5014         data->rx.status_block_id = BNX2X_DEF_SB_ID;
5015
5016         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
5017
5018         data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
5019         data->rx.outer_vlan_removal_enable_flg = 1;
5020         data->rx.silent_vlan_removal_flg = 1;
5021         data->rx.silent_vlan_value = 0;
5022         data->rx.silent_vlan_mask = 0xffff;
5023
5024         cp->rx_cons_ptr =
5025                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
5026         cp->rx_cons = *cp->rx_cons_ptr;
5027 }
5028
5029 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
5030 {
5031         struct cnic_local *cp = dev->cnic_priv;
5032         struct bnx2x *bp = netdev_priv(dev->netdev);
5033         u32 pfid = cp->pfid;
5034
5035         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
5036                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
5037         cp->kcq1.sw_prod_idx = 0;
5038
5039         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
5040                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5041
5042                 cp->kcq1.hw_prod_idx_ptr =
5043                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5044                 cp->kcq1.status_idx_ptr =
5045                         &sb->sb.running_index[SM_RX_ID];
5046         } else {
5047                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
5048
5049                 cp->kcq1.hw_prod_idx_ptr =
5050                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5051                 cp->kcq1.status_idx_ptr =
5052                         &sb->sb.running_index[SM_RX_ID];
5053         }
5054
5055         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
5056                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5057
5058                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
5059                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
5060                 cp->kcq2.sw_prod_idx = 0;
5061                 cp->kcq2.hw_prod_idx_ptr =
5062                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
5063                 cp->kcq2.status_idx_ptr =
5064                         &sb->sb.running_index[SM_RX_ID];
5065         }
5066 }
5067
5068 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
5069 {
5070         struct cnic_local *cp = dev->cnic_priv;
5071         struct bnx2x *bp = netdev_priv(dev->netdev);
5072         struct cnic_eth_dev *ethdev = cp->ethdev;
5073         int func, ret;
5074         u32 pfid;
5075
5076         dev->stats_addr = ethdev->addr_drv_info_to_mcp;
5077         cp->port_mode = bp->common.chip_port_mode;
5078         cp->pfid = bp->pfid;
5079         cp->func = bp->pf_num;
5080
5081         func = CNIC_FUNC(cp);
5082         pfid = cp->pfid;
5083
5084         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5085                                cp->iscsi_start_cid, 0);
5086
5087         if (ret)
5088                 return -ENOMEM;
5089
5090         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
5091                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5092                                         cp->fcoe_start_cid, 0);
5093
5094                 if (ret)
5095                         return -ENOMEM;
5096         }
5097
5098         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
5099
5100         cnic_init_bnx2x_kcq(dev);
5101
5102         /* Only 1 EQ */
5103         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5104         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5105                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5106         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5107                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5108                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5109         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5110                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5111                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5112         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5113                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5114                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5115         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5116                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5117                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5118         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5119                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5120         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5121                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5122         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5123                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5124                 HC_INDEX_ISCSI_EQ_CONS);
5125
5126         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5127                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5128                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
5129         CNIC_WR(dev, BAR_USTRORM_INTMEM +
5130                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5131                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
5132
5133         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
5134                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
5135
5136         cnic_setup_bnx2x_context(dev);
5137
5138         ret = cnic_init_bnx2x_irq(dev);
5139         if (ret)
5140                 return ret;
5141
5142         ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
5143         return 0;
5144 }
5145
5146 static void cnic_init_rings(struct cnic_dev *dev)
5147 {
5148         struct cnic_local *cp = dev->cnic_priv;
5149         struct bnx2x *bp = netdev_priv(dev->netdev);
5150         struct cnic_uio_dev *udev = cp->udev;
5151
5152         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5153                 return;
5154
5155         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5156                 cnic_init_bnx2_tx_ring(dev);
5157                 cnic_init_bnx2_rx_ring(dev);
5158                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5159         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5160                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5161                 u32 cid = cp->ethdev->iscsi_l2_cid;
5162                 u32 cl_qzone_id;
5163                 struct client_init_ramrod_data *data;
5164                 union l5cm_specific_data l5_data;
5165                 struct ustorm_eth_rx_producers rx_prods = {0};
5166                 u32 off, i, *cid_ptr;
5167
5168                 rx_prods.bd_prod = 0;
5169                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
5170                 barrier();
5171
5172                 cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
5173
5174                 off = BAR_USTRORM_INTMEM +
5175                         (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) ?
5176                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
5177                          USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
5178
5179                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5180                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5181
5182                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5183
5184                 data = udev->l2_buf;
5185                 cid_ptr = udev->l2_buf + 12;
5186
5187                 memset(data, 0, sizeof(*data));
5188
5189                 cnic_init_bnx2x_tx_ring(dev, data);
5190                 cnic_init_bnx2x_rx_ring(dev, data);
5191
5192                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5193                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5194
5195                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5196
5197                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5198                         cid, ETH_CONNECTION_TYPE, &l5_data);
5199
5200                 i = 0;
5201                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5202                        ++i < 10)
5203                         msleep(1);
5204
5205                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5206                         netdev_err(dev->netdev,
5207                                 "iSCSI CLIENT_SETUP did not complete\n");
5208                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5209                 cnic_ring_ctl(dev, cid, cli, 1);
5210                 *cid_ptr = cid;
5211         }
5212 }
5213
5214 static void cnic_shutdown_rings(struct cnic_dev *dev)
5215 {
5216         struct cnic_local *cp = dev->cnic_priv;
5217         struct cnic_uio_dev *udev = cp->udev;
5218         void *rx_ring;
5219
5220         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5221                 return;
5222
5223         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5224                 cnic_shutdown_bnx2_rx_ring(dev);
5225         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5226                 u32 cli = cp->ethdev->iscsi_l2_client_id;
5227                 u32 cid = cp->ethdev->iscsi_l2_cid;
5228                 union l5cm_specific_data l5_data;
5229                 int i;
5230
5231                 cnic_ring_ctl(dev, cid, cli, 0);
5232
5233                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5234
5235                 l5_data.phy_address.lo = cli;
5236                 l5_data.phy_address.hi = 0;
5237                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5238                         cid, ETH_CONNECTION_TYPE, &l5_data);
5239                 i = 0;
5240                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5241                        ++i < 10)
5242                         msleep(1);
5243
5244                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5245                         netdev_err(dev->netdev,
5246                                 "iSCSI CLIENT_HALT did not complete\n");
5247                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5248
5249                 memset(&l5_data, 0, sizeof(l5_data));
5250                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5251                         cid, NONE_CONNECTION_TYPE, &l5_data);
5252                 msleep(10);
5253         }
5254         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5255         rx_ring = udev->l2_ring + BNX2_PAGE_SIZE;
5256         memset(rx_ring, 0, BNX2_PAGE_SIZE);
5257 }
5258
5259 static int cnic_register_netdev(struct cnic_dev *dev)
5260 {
5261         struct cnic_local *cp = dev->cnic_priv;
5262         struct cnic_eth_dev *ethdev = cp->ethdev;
5263         int err;
5264
5265         if (!ethdev)
5266                 return -ENODEV;
5267
5268         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5269                 return 0;
5270
5271         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5272         if (err)
5273                 netdev_err(dev->netdev, "register_cnic failed\n");
5274
5275         return err;
5276 }
5277
5278 static void cnic_unregister_netdev(struct cnic_dev *dev)
5279 {
5280         struct cnic_local *cp = dev->cnic_priv;
5281         struct cnic_eth_dev *ethdev = cp->ethdev;
5282
5283         if (!ethdev)
5284                 return;
5285
5286         ethdev->drv_unregister_cnic(dev->netdev);
5287 }
5288
5289 static int cnic_start_hw(struct cnic_dev *dev)
5290 {
5291         struct cnic_local *cp = dev->cnic_priv;
5292         struct cnic_eth_dev *ethdev = cp->ethdev;
5293         int err;
5294
5295         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5296                 return -EALREADY;
5297
5298         dev->regview = ethdev->io_base;
5299         pci_dev_get(dev->pcidev);
5300         cp->func = PCI_FUNC(dev->pcidev->devfn);
5301         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5302         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5303
5304         err = cp->alloc_resc(dev);
5305         if (err) {
5306                 netdev_err(dev->netdev, "allocate resource failure\n");
5307                 goto err1;
5308         }
5309
5310         err = cp->start_hw(dev);
5311         if (err)
5312                 goto err1;
5313
5314         err = cnic_cm_open(dev);
5315         if (err)
5316                 goto err1;
5317
5318         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5319
5320         cp->enable_int(dev);
5321
5322         return 0;
5323
5324 err1:
5325         cp->free_resc(dev);
5326         pci_dev_put(dev->pcidev);
5327         return err;
5328 }
5329
5330 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5331 {
5332         cnic_disable_bnx2_int_sync(dev);
5333
5334         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5335         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5336
5337         cnic_init_context(dev, KWQ_CID);
5338         cnic_init_context(dev, KCQ_CID);
5339
5340         cnic_setup_5709_context(dev, 0);
5341         cnic_free_irq(dev);
5342
5343         cnic_free_resc(dev);
5344 }
5345
5346
5347 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5348 {
5349         struct cnic_local *cp = dev->cnic_priv;
5350         struct bnx2x *bp = netdev_priv(dev->netdev);
5351         u32 hc_index = HC_INDEX_ISCSI_EQ_CONS;
5352         u32 sb_id = cp->status_blk_num;
5353         u32 idx_off, syn_off;
5354
5355         cnic_free_irq(dev);
5356
5357         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
5358                 idx_off = offsetof(struct hc_status_block_e2, index_values) +
5359                           (hc_index * sizeof(u16));
5360
5361                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E2_OFFSET(hc_index, sb_id);
5362         } else {
5363                 idx_off = offsetof(struct hc_status_block_e1x, index_values) +
5364                           (hc_index * sizeof(u16));
5365
5366                 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E1X_OFFSET(hc_index, sb_id);
5367         }
5368         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + syn_off, 0);
5369         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_OFFSET(sb_id) +
5370                   idx_off, 0);
5371
5372         *cp->kcq1.hw_prod_idx_ptr = 0;
5373         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5374                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5375         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5376         cnic_free_resc(dev);
5377 }
5378
5379 static void cnic_stop_hw(struct cnic_dev *dev)
5380 {
5381         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5382                 struct cnic_local *cp = dev->cnic_priv;
5383                 int i = 0;
5384
5385                 /* Need to wait for the ring shutdown event to complete
5386                  * before clearing the CNIC_UP flag.
5387                  */
5388                 while (cp->udev && cp->udev->uio_dev != -1 && i < 15) {
5389                         msleep(100);
5390                         i++;
5391                 }
5392                 cnic_shutdown_rings(dev);
5393                 cp->stop_cm(dev);
5394                 cp->ethdev->drv_state &= ~CNIC_DRV_STATE_HANDLES_IRQ;
5395                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5396                 RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5397                 synchronize_rcu();
5398                 cnic_cm_shutdown(dev);
5399                 cp->stop_hw(dev);
5400                 pci_dev_put(dev->pcidev);
5401         }
5402 }
5403
5404 static void cnic_free_dev(struct cnic_dev *dev)
5405 {
5406         int i = 0;
5407
5408         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5409                 msleep(100);
5410                 i++;
5411         }
5412         if (atomic_read(&dev->ref_count) != 0)
5413                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5414
5415         netdev_info(dev->netdev, "Removed CNIC device\n");
5416         dev_put(dev->netdev);
5417         kfree(dev);
5418 }
5419
5420 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5421                                        struct pci_dev *pdev)
5422 {
5423         struct cnic_dev *cdev;
5424         struct cnic_local *cp;
5425         int alloc_size;
5426
5427         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5428
5429         cdev = kzalloc(alloc_size, GFP_KERNEL);
5430         if (cdev == NULL)
5431                 return NULL;
5432
5433         cdev->netdev = dev;
5434         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5435         cdev->register_device = cnic_register_device;
5436         cdev->unregister_device = cnic_unregister_device;
5437         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5438
5439         cp = cdev->cnic_priv;
5440         cp->dev = cdev;
5441         cp->l2_single_buf_size = 0x400;
5442         cp->l2_rx_ring_size = 3;
5443
5444         spin_lock_init(&cp->cnic_ulp_lock);
5445
5446         netdev_info(dev, "Added CNIC device\n");
5447
5448         return cdev;
5449 }
5450
5451 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5452 {
5453         struct pci_dev *pdev;
5454         struct cnic_dev *cdev;
5455         struct cnic_local *cp;
5456         struct bnx2 *bp = netdev_priv(dev);
5457         struct cnic_eth_dev *ethdev = NULL;
5458
5459         if (bp->cnic_probe)
5460                 ethdev = (bp->cnic_probe)(dev);
5461
5462         if (!ethdev)
5463                 return NULL;
5464
5465         pdev = ethdev->pdev;
5466         if (!pdev)
5467                 return NULL;
5468
5469         dev_hold(dev);
5470         pci_dev_get(pdev);
5471         if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5472              pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5473             (pdev->revision < 0x10)) {
5474                 pci_dev_put(pdev);
5475                 goto cnic_err;
5476         }
5477         pci_dev_put(pdev);
5478
5479         cdev = cnic_alloc_dev(dev, pdev);
5480         if (cdev == NULL)
5481                 goto cnic_err;
5482
5483         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5484         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5485
5486         cp = cdev->cnic_priv;
5487         cp->ethdev = ethdev;
5488         cdev->pcidev = pdev;
5489         cp->chip_id = ethdev->chip_id;
5490
5491         cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5492
5493         cp->cnic_ops = &cnic_bnx2_ops;
5494         cp->start_hw = cnic_start_bnx2_hw;
5495         cp->stop_hw = cnic_stop_bnx2_hw;
5496         cp->setup_pgtbl = cnic_setup_page_tbl;
5497         cp->alloc_resc = cnic_alloc_bnx2_resc;
5498         cp->free_resc = cnic_free_resc;
5499         cp->start_cm = cnic_cm_init_bnx2_hw;
5500         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5501         cp->enable_int = cnic_enable_bnx2_int;
5502         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5503         cp->close_conn = cnic_close_bnx2_conn;
5504         return cdev;
5505
5506 cnic_err:
5507         dev_put(dev);
5508         return NULL;
5509 }
5510
5511 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5512 {
5513         struct pci_dev *pdev;
5514         struct cnic_dev *cdev;
5515         struct cnic_local *cp;
5516         struct bnx2x *bp = netdev_priv(dev);
5517         struct cnic_eth_dev *ethdev = NULL;
5518
5519         if (bp->cnic_probe)
5520                 ethdev = bp->cnic_probe(dev);
5521
5522         if (!ethdev)
5523                 return NULL;
5524
5525         pdev = ethdev->pdev;
5526         if (!pdev)
5527                 return NULL;
5528
5529         dev_hold(dev);
5530         cdev = cnic_alloc_dev(dev, pdev);
5531         if (cdev == NULL) {
5532                 dev_put(dev);
5533                 return NULL;
5534         }
5535
5536         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5537         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5538
5539         cp = cdev->cnic_priv;
5540         cp->ethdev = ethdev;
5541         cdev->pcidev = pdev;
5542         cp->chip_id = ethdev->chip_id;
5543
5544         cdev->stats_addr = ethdev->addr_drv_info_to_mcp;
5545
5546         if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5547                 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5548         if (CNIC_SUPPORTS_FCOE(cp)) {
5549                 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5550                 cdev->max_fcoe_exchanges = ethdev->max_fcoe_exchanges;
5551         }
5552
5553         if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
5554                 cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
5555
5556         memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);
5557
5558         cp->cnic_ops = &cnic_bnx2x_ops;
5559         cp->start_hw = cnic_start_bnx2x_hw;
5560         cp->stop_hw = cnic_stop_bnx2x_hw;
5561         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5562         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5563         cp->free_resc = cnic_free_resc;
5564         cp->start_cm = cnic_cm_init_bnx2x_hw;
5565         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5566         cp->enable_int = cnic_enable_bnx2x_int;
5567         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5568         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
5569                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5570                 cp->arm_int = cnic_arm_bnx2x_e2_msix;
5571         } else {
5572                 cp->ack_int = cnic_ack_bnx2x_msix;
5573                 cp->arm_int = cnic_arm_bnx2x_msix;
5574         }
5575         cp->close_conn = cnic_close_bnx2x_conn;
5576         return cdev;
5577 }
5578
5579 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5580 {
5581         struct ethtool_drvinfo drvinfo;
5582         struct cnic_dev *cdev = NULL;
5583
5584         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5585                 memset(&drvinfo, 0, sizeof(drvinfo));
5586                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5587
5588                 if (!strcmp(drvinfo.driver, "bnx2"))
5589                         cdev = init_bnx2_cnic(dev);
5590                 if (!strcmp(drvinfo.driver, "bnx2x"))
5591                         cdev = init_bnx2x_cnic(dev);
5592                 if (cdev) {
5593                         write_lock(&cnic_dev_lock);
5594                         list_add(&cdev->list, &cnic_dev_list);
5595                         write_unlock(&cnic_dev_lock);
5596                 }
5597         }
5598         return cdev;
5599 }
5600
5601 static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
5602                               u16 vlan_id)
5603 {
5604         int if_type;
5605
5606         rcu_read_lock();
5607         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5608                 struct cnic_ulp_ops *ulp_ops;
5609                 void *ctx;
5610
5611                 ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
5612                 if (!ulp_ops || !ulp_ops->indicate_netevent)
5613                         continue;
5614
5615                 ctx = cp->ulp_handle[if_type];
5616
5617                 ulp_ops->indicate_netevent(ctx, event, vlan_id);
5618         }
5619         rcu_read_unlock();
5620 }
5621
5622 /* netdev event handler */
5623 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5624                                                          void *ptr)
5625 {
5626         struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
5627         struct cnic_dev *dev;
5628         int new_dev = 0;
5629
5630         dev = cnic_from_netdev(netdev);
5631
5632         if (!dev && event == NETDEV_REGISTER) {
5633                 /* Check for the hot-plug device */
5634                 dev = is_cnic_dev(netdev);
5635                 if (dev) {
5636                         new_dev = 1;
5637                         cnic_hold(dev);
5638                 }
5639         }
5640         if (dev) {
5641                 struct cnic_local *cp = dev->cnic_priv;
5642
5643                 if (new_dev)
5644                         cnic_ulp_init(dev);
5645                 else if (event == NETDEV_UNREGISTER)
5646                         cnic_ulp_exit(dev);
5647
5648                 if (event == NETDEV_UP) {
5649                         if (cnic_register_netdev(dev) != 0) {
5650                                 cnic_put(dev);
5651                                 goto done;
5652                         }
5653                         if (!cnic_start_hw(dev))
5654                                 cnic_ulp_start(dev);
5655                 }
5656
5657                 cnic_rcv_netevent(cp, event, 0);
5658
5659                 if (event == NETDEV_GOING_DOWN) {
5660                         cnic_ulp_stop(dev);
5661                         cnic_stop_hw(dev);
5662                         cnic_unregister_netdev(dev);
5663                 } else if (event == NETDEV_UNREGISTER) {
5664                         write_lock(&cnic_dev_lock);
5665                         list_del_init(&dev->list);
5666                         write_unlock(&cnic_dev_lock);
5667
5668                         cnic_put(dev);
5669                         cnic_free_dev(dev);
5670                         goto done;
5671                 }
5672                 cnic_put(dev);
5673         } else {
5674                 struct net_device *realdev;
5675                 u16 vid;
5676
5677                 vid = cnic_get_vlan(netdev, &realdev);
5678                 if (realdev) {
5679                         dev = cnic_from_netdev(realdev);
5680                         if (dev) {
5681                                 vid |= VLAN_TAG_PRESENT;
5682                                 cnic_rcv_netevent(dev->cnic_priv, event, vid);
5683                                 cnic_put(dev);
5684                         }
5685                 }
5686         }
5687 done:
5688         return NOTIFY_DONE;
5689 }
5690
5691 static struct notifier_block cnic_netdev_notifier = {
5692         .notifier_call = cnic_netdev_event
5693 };
5694
5695 static void cnic_release(void)
5696 {
5697         struct cnic_uio_dev *udev;
5698
5699         while (!list_empty(&cnic_udev_list)) {
5700                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5701                                   list);
5702                 cnic_free_uio(udev);
5703         }
5704 }
5705
5706 static int __init cnic_init(void)
5707 {
5708         int rc = 0;
5709
5710         pr_info("%s", version);
5711
5712         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5713         if (rc) {
5714                 cnic_release();
5715                 return rc;
5716         }
5717
5718         cnic_wq = create_singlethread_workqueue("cnic_wq");
5719         if (!cnic_wq) {
5720                 cnic_release();
5721                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5722                 return -ENOMEM;
5723         }
5724
5725         return 0;
5726 }
5727
5728 static void __exit cnic_exit(void)
5729 {
5730         unregister_netdevice_notifier(&cnic_netdev_notifier);
5731         cnic_release();
5732         destroy_workqueue(cnic_wq);
5733 }
5734
5735 module_init(cnic_init);
5736 module_exit(cnic_exit);