drivers/net/cnic.c

   1 /* cnic.c: Broadcom CNIC core network driver.
   2  *
   3  * Copyright (c) 2006-2010 Broadcom Corporation
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation.
   8  *
   9  * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
  10  * Modified and maintained by: Michael Chan <mchan@broadcom.com>
  11  */
  12
  13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  14
  15 #include <linux/module.h>
  16
  17 #include <linux/kernel.h>
  18 #include <linux/errno.h>
  19 #include <linux/list.h>
  20 #include <linux/slab.h>
  21 #include <linux/pci.h>
  22 #include <linux/init.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/uio_driver.h>
  25 #include <linux/in.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/delay.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_vlan.h>
  30 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
  31 #define BCM_VLAN 1
  32 #endif
  33 #include <net/ip.h>
  34 #include <net/tcp.h>
  35 #include <net/route.h>
  36 #include <net/ipv6.h>
  37 #include <net/ip6_route.h>
  38 #include <net/ip6_checksum.h>
  39 #include <scsi/iscsi_if.h>
  40
  41 #include "cnic_if.h"
  42 #include "bnx2.h"
  43 #include "bnx2x_reg.h"
  44 #include "bnx2x_fw_defs.h"
  45 #include "bnx2x_hsi.h"
  46 #include "../scsi/bnx2i/57xx_iscsi_constants.h"
  47 #include "../scsi/bnx2i/57xx_iscsi_hsi.h"
  48 #include "cnic.h"
  49 #include "cnic_defs.h"
  50
  51 #define DRV_MODULE_NAME         "cnic"
  52
  53 static char version[] __devinitdata =
  54         "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  55
  56 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  57               "Chen (zongxi@broadcom.com");
  58 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
  59 MODULE_LICENSE("GPL");
  60 MODULE_VERSION(CNIC_MODULE_VERSION);
  61
  62 static LIST_HEAD(cnic_dev_list);
  63 static DEFINE_RWLOCK(cnic_dev_lock);
  64 static DEFINE_MUTEX(cnic_lock);
  65
  66 static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  67
  68 static int cnic_service_bnx2(void *, void *);
  69 static int cnic_service_bnx2x(void *, void *);
  70 static int cnic_ctl(void *, struct cnic_ctl_info *);
  71
  72 static struct cnic_ops cnic_bnx2_ops = {
  73         .cnic_owner     = THIS_MODULE,
  74         .cnic_handler   = cnic_service_bnx2,
  75         .cnic_ctl       = cnic_ctl,
  76 };
  77
  78 static struct cnic_ops cnic_bnx2x_ops = {
  79         .cnic_owner     = THIS_MODULE,
  80         .cnic_handler   = cnic_service_bnx2x,
  81         .cnic_ctl       = cnic_ctl,
  82 };
  83
  84 static void cnic_shutdown_rings(struct cnic_dev *);
  85 static void cnic_init_rings(struct cnic_dev *);
  86 static int cnic_cm_set_pg(struct cnic_sock *);
  87
  88 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
  89 {
  90         struct cnic_dev *dev = uinfo->priv;
  91         struct cnic_local *cp = dev->cnic_priv;
  92
  93         if (!capable(CAP_NET_ADMIN))
  94                 return -EPERM;
  95
  96         if (cp->uio_dev != -1)
  97                 return -EBUSY;
  98
  99         rtnl_lock();
 100         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 101                 rtnl_unlock();
 102                 return -ENODEV;
 103         }
 104
 105         cp->uio_dev = iminor(inode);
 106
 107         cnic_init_rings(dev);
 108         rtnl_unlock();
 109
 110         return 0;
 111 }
 112
 113 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 114 {
 115         struct cnic_dev *dev = uinfo->priv;
 116         struct cnic_local *cp = dev->cnic_priv;
 117
 118         cnic_shutdown_rings(dev);
 119
 120         cp->uio_dev = -1;
 121         return 0;
 122 }
 123
 124 static inline void cnic_hold(struct cnic_dev *dev)
 125 {
 126         atomic_inc(&dev->ref_count);
 127 }
 128
 129 static inline void cnic_put(struct cnic_dev *dev)
 130 {
 131         atomic_dec(&dev->ref_count);
 132 }
 133
 134 static inline void csk_hold(struct cnic_sock *csk)
 135 {
 136         atomic_inc(&csk->ref_count);
 137 }
 138
 139 static inline void csk_put(struct cnic_sock *csk)
 140 {
 141         atomic_dec(&csk->ref_count);
 142 }
 143
 144 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 145 {
 146         struct cnic_dev *cdev;
 147
 148         read_lock(&cnic_dev_lock);
 149         list_for_each_entry(cdev, &cnic_dev_list, list) {
 150                 if (netdev == cdev->netdev) {
 151                         cnic_hold(cdev);
 152                         read_unlock(&cnic_dev_lock);
 153                         return cdev;
 154                 }
 155         }
 156         read_unlock(&cnic_dev_lock);
 157         return NULL;
 158 }
 159
 160 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 161 {
 162         atomic_inc(&ulp_ops->ref_count);
 163 }
 164
 165 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 166 {
 167         atomic_dec(&ulp_ops->ref_count);
 168 }
 169
 170 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 171 {
 172         struct cnic_local *cp = dev->cnic_priv;
 173         struct cnic_eth_dev *ethdev = cp->ethdev;
 174         struct drv_ctl_info info;
 175         struct drv_ctl_io *io = &info.data.io;
 176
 177         info.cmd = DRV_CTL_CTX_WR_CMD;
 178         io->cid_addr = cid_addr;
 179         io->offset = off;
 180         io->data = val;
 181         ethdev->drv_ctl(dev->netdev, &info);
 182 }
 183
 184 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 185 {
 186         struct cnic_local *cp = dev->cnic_priv;
 187         struct cnic_eth_dev *ethdev = cp->ethdev;
 188         struct drv_ctl_info info;
 189         struct drv_ctl_io *io = &info.data.io;
 190
 191         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 192         io->offset = off;
 193         io->dma_addr = addr;
 194         ethdev->drv_ctl(dev->netdev, &info);
 195 }
 196
 197 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 198 {
 199         struct cnic_local *cp = dev->cnic_priv;
 200         struct cnic_eth_dev *ethdev = cp->ethdev;
 201         struct drv_ctl_info info;
 202         struct drv_ctl_l2_ring *ring = &info.data.ring;
 203
 204         if (start)
 205                 info.cmd = DRV_CTL_START_L2_CMD;
 206         else
 207                 info.cmd = DRV_CTL_STOP_L2_CMD;
 208
 209         ring->cid = cid;
 210         ring->client_id = cl_id;
 211         ethdev->drv_ctl(dev->netdev, &info);
 212 }
 213
 214 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 215 {
 216         struct cnic_local *cp = dev->cnic_priv;
 217         struct cnic_eth_dev *ethdev = cp->ethdev;
 218         struct drv_ctl_info info;
 219         struct drv_ctl_io *io = &info.data.io;
 220
 221         info.cmd = DRV_CTL_IO_WR_CMD;
 222         io->offset = off;
 223         io->data = val;
 224         ethdev->drv_ctl(dev->netdev, &info);
 225 }
 226
 227 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 228 {
 229         struct cnic_local *cp = dev->cnic_priv;
 230         struct cnic_eth_dev *ethdev = cp->ethdev;
 231         struct drv_ctl_info info;
 232         struct drv_ctl_io *io = &info.data.io;
 233
 234         info.cmd = DRV_CTL_IO_RD_CMD;
 235         io->offset = off;
 236         ethdev->drv_ctl(dev->netdev, &info);
 237         return io->data;
 238 }
 239
 240 static int cnic_in_use(struct cnic_sock *csk)
 241 {
 242         return test_bit(SK_F_INUSE, &csk->flags);
 243 }
 244
 245 static void cnic_kwq_completion(struct cnic_dev *dev, u32 count)
 246 {
 247         struct cnic_local *cp = dev->cnic_priv;
 248         struct cnic_eth_dev *ethdev = cp->ethdev;
 249         struct drv_ctl_info info;
 250
 251         info.cmd = DRV_CTL_COMPLETION_CMD;
 252         info.data.comp.comp_count = count;
 253         ethdev->drv_ctl(dev->netdev, &info);
 254 }
 255
 256 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 257 {
 258         u32 i;
 259
 260         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
 261                 if (cp->ctx_tbl[i].cid == cid) {
 262                         *l5_cid = i;
 263                         return 0;
 264                 }
 265         }
 266         return -EINVAL;
 267 }
 268
 269 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 270                            struct cnic_sock *csk)
 271 {
 272         struct iscsi_path path_req;
 273         char *buf = NULL;
 274         u16 len = 0;
 275         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 276         struct cnic_ulp_ops *ulp_ops;
 277
 278         if (cp->uio_dev == -1)
 279                 return -ENODEV;
 280
 281         if (csk) {
 282                 len = sizeof(path_req);
 283                 buf = (char *) &path_req;
 284                 memset(&path_req, 0, len);
 285
 286                 msg_type = ISCSI_KEVENT_PATH_REQ;
 287                 path_req.handle = (u64) csk->l5_cid;
 288                 if (test_bit(SK_F_IPV6, &csk->flags)) {
 289                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 290                                sizeof(struct in6_addr));
 291                         path_req.ip_addr_len = 16;
 292                 } else {
 293                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 294                                sizeof(struct in_addr));
 295                         path_req.ip_addr_len = 4;
 296                 }
 297                 path_req.vlan_id = csk->vlan_id;
 298                 path_req.pmtu = csk->mtu;
 299         }
 300
 301         rcu_read_lock();
 302         ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
 303         if (ulp_ops)
 304                 ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len);
 305         rcu_read_unlock();
 306         return 0;
 307 }
 308
 309 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 310                                   char *buf, u16 len)
 311 {
 312         int rc = -EINVAL;
 313
 314         switch (msg_type) {
 315         case ISCSI_UEVENT_PATH_UPDATE: {
 316                 struct cnic_local *cp;
 317                 u32 l5_cid;
 318                 struct cnic_sock *csk;
 319                 struct iscsi_path *path_resp;
 320
 321                 if (len < sizeof(*path_resp))
 322                         break;
 323
 324                 path_resp = (struct iscsi_path *) buf;
 325                 cp = dev->cnic_priv;
 326                 l5_cid = (u32) path_resp->handle;
 327                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
 328                         break;
 329
 330                 rcu_read_lock();
 331                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
 332                         rc = -ENODEV;
 333                         rcu_read_unlock();
 334                         break;
 335                 }
 336                 csk = &cp->csk_tbl[l5_cid];
 337                 csk_hold(csk);
 338                 if (cnic_in_use(csk)) {
 339                         memcpy(csk->ha, path_resp->mac_addr, 6);
 340                         if (test_bit(SK_F_IPV6, &csk->flags))
 341                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 342                                        sizeof(struct in6_addr));
 343                         else
 344                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 345                                        sizeof(struct in_addr));
 346                         if (is_valid_ether_addr(csk->ha))
 347                                 cnic_cm_set_pg(csk);
 348                 }
 349                 csk_put(csk);
 350                 rcu_read_unlock();
 351                 rc = 0;
 352         }
 353         }
 354
 355         return rc;
 356 }
 357
 358 static int cnic_offld_prep(struct cnic_sock *csk)
 359 {
 360         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 361                 return 0;
 362
 363         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 364                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 365                 return 0;
 366         }
 367
 368         return 1;
 369 }
 370
 371 static int cnic_close_prep(struct cnic_sock *csk)
 372 {
 373         clear_bit(SK_F_CONNECT_START, &csk->flags);
 374         smp_mb__after_clear_bit();
 375
 376         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 377                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 378                         msleep(1);
 379
 380                 return 1;
 381         }
 382         return 0;
 383 }
 384
 385 static int cnic_abort_prep(struct cnic_sock *csk)
 386 {
 387         clear_bit(SK_F_CONNECT_START, &csk->flags);
 388         smp_mb__after_clear_bit();
 389
 390         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 391                 msleep(1);
 392
 393         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 394                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 395                 return 1;
 396         }
 397
 398         return 0;
 399 }
 400
 401 static void cnic_uio_stop(void)
 402 {
 403         struct cnic_dev *dev;
 404
 405         read_lock(&cnic_dev_lock);
 406         list_for_each_entry(dev, &cnic_dev_list, list) {
 407                 struct cnic_local *cp = dev->cnic_priv;
 408
 409                 if (cp->cnic_uinfo)
 410                         cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 411         }
 412         read_unlock(&cnic_dev_lock);
 413 }
 414
 415 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 416 {
 417         struct cnic_dev *dev;
 418
 419         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 420                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 421                 return -EINVAL;
 422         }
 423         mutex_lock(&cnic_lock);
 424         if (cnic_ulp_tbl[ulp_type]) {
 425                 pr_err("%s: Type %d has already been registered\n",
 426                        __func__, ulp_type);
 427                 mutex_unlock(&cnic_lock);
 428                 return -EBUSY;
 429         }
 430
 431         read_lock(&cnic_dev_lock);
 432         list_for_each_entry(dev, &cnic_dev_list, list) {
 433                 struct cnic_local *cp = dev->cnic_priv;
 434
 435                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 436         }
 437         read_unlock(&cnic_dev_lock);
 438
 439         atomic_set(&ulp_ops->ref_count, 0);
 440         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 441         mutex_unlock(&cnic_lock);
 442
 443         /* Prevent race conditions with netdev_event */
 444         rtnl_lock();
 445         read_lock(&cnic_dev_lock);
 446         list_for_each_entry(dev, &cnic_dev_list, list) {
 447                 struct cnic_local *cp = dev->cnic_priv;
 448
 449                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 450                         ulp_ops->cnic_init(dev);
 451         }
 452         read_unlock(&cnic_dev_lock);
 453         rtnl_unlock();
 454
 455         return 0;
 456 }
 457
 458 int cnic_unregister_driver(int ulp_type)
 459 {
 460         struct cnic_dev *dev;
 461         struct cnic_ulp_ops *ulp_ops;
 462         int i = 0;
 463
 464         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 465                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 466                 return -EINVAL;
 467         }
 468         mutex_lock(&cnic_lock);
 469         ulp_ops = cnic_ulp_tbl[ulp_type];
 470         if (!ulp_ops) {
 471                 pr_err("%s: Type %d has not been registered\n",
 472                        __func__, ulp_type);
 473                 goto out_unlock;
 474         }
 475         read_lock(&cnic_dev_lock);
 476         list_for_each_entry(dev, &cnic_dev_list, list) {
 477                 struct cnic_local *cp = dev->cnic_priv;
 478
 479                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 480                         pr_err("%s: Type %d still has devices registered\n",
 481                                __func__, ulp_type);
 482                         read_unlock(&cnic_dev_lock);
 483                         goto out_unlock;
 484                 }
 485         }
 486         read_unlock(&cnic_dev_lock);
 487
 488         if (ulp_type == CNIC_ULP_ISCSI)
 489                 cnic_uio_stop();
 490
 491         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
 492
 493         mutex_unlock(&cnic_lock);
 494         synchronize_rcu();
 495         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 496                 msleep(100);
 497                 i++;
 498         }
 499
 500         if (atomic_read(&ulp_ops->ref_count) != 0)
 501                 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
 502         return 0;
 503
 504 out_unlock:
 505         mutex_unlock(&cnic_lock);
 506         return -EINVAL;
 507 }
 508
 509 static int cnic_start_hw(struct cnic_dev *);
 510 static void cnic_stop_hw(struct cnic_dev *);
 511
 512 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 513                                 void *ulp_ctx)
 514 {
 515         struct cnic_local *cp = dev->cnic_priv;
 516         struct cnic_ulp_ops *ulp_ops;
 517
 518         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 519                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 520                 return -EINVAL;
 521         }
 522         mutex_lock(&cnic_lock);
 523         if (cnic_ulp_tbl[ulp_type] == NULL) {
 524                 pr_err("%s: Driver with type %d has not been registered\n",
 525                        __func__, ulp_type);
 526                 mutex_unlock(&cnic_lock);
 527                 return -EAGAIN;
 528         }
 529         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 530                 pr_err("%s: Type %d has already been registered to this device\n",
 531                        __func__, ulp_type);
 532                 mutex_unlock(&cnic_lock);
 533                 return -EBUSY;
 534         }
 535
 536         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 537         cp->ulp_handle[ulp_type] = ulp_ctx;
 538         ulp_ops = cnic_ulp_tbl[ulp_type];
 539         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 540         cnic_hold(dev);
 541
 542         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 543                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 544                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 545
 546         mutex_unlock(&cnic_lock);
 547
 548         return 0;
 549
 550 }
 551 EXPORT_SYMBOL(cnic_register_driver);
 552
 553 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 554 {
 555         struct cnic_local *cp = dev->cnic_priv;
 556         int i = 0;
 557
 558         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 559                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
 560                 return -EINVAL;
 561         }
 562         mutex_lock(&cnic_lock);
 563         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
 564                 rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
 565                 cnic_put(dev);
 566         } else {
 567                 pr_err("%s: device not registered to this ulp type %d\n",
 568                        __func__, ulp_type);
 569                 mutex_unlock(&cnic_lock);
 570                 return -EINVAL;
 571         }
 572         mutex_unlock(&cnic_lock);
 573
 574         synchronize_rcu();
 575
 576         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 577                i < 20) {
 578                 msleep(100);
 579                 i++;
 580         }
 581         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 582                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 583
 584         return 0;
 585 }
 586 EXPORT_SYMBOL(cnic_unregister_driver);
 587
 588 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
 589 {
 590         id_tbl->start = start_id;
 591         id_tbl->max = size;
 592         id_tbl->next = 0;
 593         spin_lock_init(&id_tbl->lock);
 594         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
 595         if (!id_tbl->table)
 596                 return -ENOMEM;
 597
 598         return 0;
 599 }
 600
 601 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 602 {
 603         kfree(id_tbl->table);
 604         id_tbl->table = NULL;
 605 }
 606
 607 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 608 {
 609         int ret = -1;
 610
 611         id -= id_tbl->start;
 612         if (id >= id_tbl->max)
 613                 return ret;
 614
 615         spin_lock(&id_tbl->lock);
 616         if (!test_bit(id, id_tbl->table)) {
 617                 set_bit(id, id_tbl->table);
 618                 ret = 0;
 619         }
 620         spin_unlock(&id_tbl->lock);
 621         return ret;
 622 }
 623
 624 /* Returns -1 if not successful */
 625 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 626 {
 627         u32 id;
 628
 629         spin_lock(&id_tbl->lock);
 630         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 631         if (id >= id_tbl->max) {
 632                 id = -1;
 633                 if (id_tbl->next != 0) {
 634                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 635                         if (id >= id_tbl->next)
 636                                 id = -1;
 637                 }
 638         }
 639
 640         if (id < id_tbl->max) {
 641                 set_bit(id, id_tbl->table);
 642                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 643                 id += id_tbl->start;
 644         }
 645
 646         spin_unlock(&id_tbl->lock);
 647
 648         return id;
 649 }
 650
 651 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 652 {
 653         if (id == -1)
 654                 return;
 655
 656         id -= id_tbl->start;
 657         if (id >= id_tbl->max)
 658                 return;
 659
 660         clear_bit(id, id_tbl->table);
 661 }
 662
 663 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 664 {
 665         int i;
 666
 667         if (!dma->pg_arr)
 668                 return;
 669
 670         for (i = 0; i < dma->num_pages; i++) {
 671                 if (dma->pg_arr[i]) {
 672                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
 673                                           dma->pg_arr[i], dma->pg_map_arr[i]);
 674                         dma->pg_arr[i] = NULL;
 675                 }
 676         }
 677         if (dma->pgtbl) {
 678                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 679                                   dma->pgtbl, dma->pgtbl_map);
 680                 dma->pgtbl = NULL;
 681         }
 682         kfree(dma->pg_arr);
 683         dma->pg_arr = NULL;
 684         dma->num_pages = 0;
 685 }
 686
 687 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 688 {
 689         int i;
 690         u32 *page_table = dma->pgtbl;
 691
 692         for (i = 0; i < dma->num_pages; i++) {
 693                 /* Each entry needs to be in big endian format. */
 694                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 695                 page_table++;
 696                 *page_table = (u32) dma->pg_map_arr[i];
 697                 page_table++;
 698         }
 699 }
 700
 701 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 702 {
 703         int i;
 704         u32 *page_table = dma->pgtbl;
 705
 706         for (i = 0; i < dma->num_pages; i++) {
 707                 /* Each entry needs to be in little endian format. */
 708                 *page_table = dma->pg_map_arr[i] & 0xffffffff;
 709                 page_table++;
 710                 *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
 711                 page_table++;
 712         }
 713 }
 714
 715 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 716                           int pages, int use_pg_tbl)
 717 {
 718         int i, size;
 719         struct cnic_local *cp = dev->cnic_priv;
 720
 721         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 722         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 723         if (dma->pg_arr == NULL)
 724                 return -ENOMEM;
 725
 726         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 727         dma->num_pages = pages;
 728
 729         for (i = 0; i < pages; i++) {
 730                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 731                                                     BCM_PAGE_SIZE,
 732                                                     &dma->pg_map_arr[i],
 733                                                     GFP_ATOMIC);
 734                 if (dma->pg_arr[i] == NULL)
 735                         goto error;
 736         }
 737         if (!use_pg_tbl)
 738                 return 0;
 739
 740         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
 741                           ~(BCM_PAGE_SIZE - 1);
 742         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 743                                         &dma->pgtbl_map, GFP_ATOMIC);
 744         if (dma->pgtbl == NULL)
 745                 goto error;
 746
 747         cp->setup_pgtbl(dev, dma);
 748
 749         return 0;
 750
 751 error:
 752         cnic_free_dma(dev, dma);
 753         return -ENOMEM;
 754 }
 755
 756 static void cnic_free_context(struct cnic_dev *dev)
 757 {
 758         struct cnic_local *cp = dev->cnic_priv;
 759         int i;
 760
 761         for (i = 0; i < cp->ctx_blks; i++) {
 762                 if (cp->ctx_arr[i].ctx) {
 763                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 764                                           cp->ctx_arr[i].ctx,
 765                                           cp->ctx_arr[i].mapping);
 766                         cp->ctx_arr[i].ctx = NULL;
 767                 }
 768         }
 769 }
 770
 771 static void cnic_free_resc(struct cnic_dev *dev)
 772 {
 773         struct cnic_local *cp = dev->cnic_priv;
 774         int i = 0;
 775
 776         if (cp->cnic_uinfo) {
 777                 while (cp->uio_dev != -1 && i < 15) {
 778                         msleep(100);
 779                         i++;
 780                 }
 781                 uio_unregister_device(cp->cnic_uinfo);
 782                 kfree(cp->cnic_uinfo);
 783                 cp->cnic_uinfo = NULL;
 784         }
 785
 786         if (cp->l2_buf) {
 787                 dma_free_coherent(&dev->pcidev->dev, cp->l2_buf_size,
 788                                   cp->l2_buf, cp->l2_buf_map);
 789                 cp->l2_buf = NULL;
 790         }
 791
 792         if (cp->l2_ring) {
 793                 dma_free_coherent(&dev->pcidev->dev, cp->l2_ring_size,
 794                                   cp->l2_ring, cp->l2_ring_map);
 795                 cp->l2_ring = NULL;
 796         }
 797
 798         cnic_free_context(dev);
 799         kfree(cp->ctx_arr);
 800         cp->ctx_arr = NULL;
 801         cp->ctx_blks = 0;
 802
 803         cnic_free_dma(dev, &cp->gbl_buf_info);
 804         cnic_free_dma(dev, &cp->conn_buf_info);
 805         cnic_free_dma(dev, &cp->kwq_info);
 806         cnic_free_dma(dev, &cp->kwq_16_data_info);
 807         cnic_free_dma(dev, &cp->kcq_info);
 808         kfree(cp->iscsi_tbl);
 809         cp->iscsi_tbl = NULL;
 810         kfree(cp->ctx_tbl);
 811         cp->ctx_tbl = NULL;
 812
 813         cnic_free_id_tbl(&cp->cid_tbl);
 814 }
 815
 816 static int cnic_alloc_context(struct cnic_dev *dev)
 817 {
 818         struct cnic_local *cp = dev->cnic_priv;
 819
 820         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
 821                 int i, k, arr_size;
 822
 823                 cp->ctx_blk_size = BCM_PAGE_SIZE;
 824                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
 825                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 826                            sizeof(struct cnic_ctx);
 827                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 828                 if (cp->ctx_arr == NULL)
 829                         return -ENOMEM;
 830
 831                 k = 0;
 832                 for (i = 0; i < 2; i++) {
 833                         u32 j, reg, off, lo, hi;
 834
 835                         if (i == 0)
 836                                 off = BNX2_PG_CTX_MAP;
 837                         else
 838                                 off = BNX2_ISCSI_CTX_MAP;
 839
 840                         reg = cnic_reg_rd_ind(dev, off);
 841                         lo = reg >> 16;
 842                         hi = reg & 0xffff;
 843                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 844                                 cp->ctx_arr[k].cid = j;
 845                 }
 846
 847                 cp->ctx_blks = k;
 848                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 849                         cp->ctx_blks = 0;
 850                         return -ENOMEM;
 851                 }
 852
 853                 for (i = 0; i < cp->ctx_blks; i++) {
 854                         cp->ctx_arr[i].ctx =
 855                                 dma_alloc_coherent(&dev->pcidev->dev,
 856                                                    BCM_PAGE_SIZE,
 857                                                    &cp->ctx_arr[i].mapping,
 858                                                    GFP_KERNEL);
 859                         if (cp->ctx_arr[i].ctx == NULL)
 860                                 return -ENOMEM;
 861                 }
 862         }
 863         return 0;
 864 }
 865
 866 static int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages)
 867 {
 868         struct cnic_local *cp = dev->cnic_priv;
 869
 870         cp->l2_ring_size = pages * BCM_PAGE_SIZE;
 871         cp->l2_ring = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_ring_size,
 872                                          &cp->l2_ring_map,
 873                                          GFP_KERNEL | __GFP_COMP);
 874         if (!cp->l2_ring)
 875                 return -ENOMEM;
 876
 877         cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
 878         cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size);
 879         cp->l2_buf = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_buf_size,
 880                                         &cp->l2_buf_map,
 881                                         GFP_KERNEL | __GFP_COMP);
 882         if (!cp->l2_buf)
 883                 return -ENOMEM;
 884
 885         return 0;
 886 }
 887
 888 static int cnic_alloc_uio(struct cnic_dev *dev) {
 889         struct cnic_local *cp = dev->cnic_priv;
 890         struct uio_info *uinfo;
 891         int ret;
 892
 893         uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC);
 894         if (!uinfo)
 895                 return -ENOMEM;
 896
 897         uinfo->mem[0].addr = dev->netdev->base_addr;
 898         uinfo->mem[0].internal_addr = dev->regview;
 899         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
 900         uinfo->mem[0].memtype = UIO_MEM_PHYS;
 901
 902         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
 903                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
 904                         PAGE_MASK;
 905                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
 906                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
 907                 else
 908                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
 909
 910                 uinfo->name = "bnx2_cnic";
 911         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
 912                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
 913                         PAGE_MASK;
 914                 uinfo->mem[1].size = sizeof(struct host_def_status_block);
 915
 916                 uinfo->name = "bnx2x_cnic";
 917         }
 918
 919         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 920
 921         uinfo->mem[2].addr = (unsigned long) cp->l2_ring;
 922         uinfo->mem[2].size = cp->l2_ring_size;
 923         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
 924
 925         uinfo->mem[3].addr = (unsigned long) cp->l2_buf;
 926         uinfo->mem[3].size = cp->l2_buf_size;
 927         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
 928
 929         uinfo->version = CNIC_MODULE_VERSION;
 930         uinfo->irq = UIO_IRQ_CUSTOM;
 931
 932         uinfo->open = cnic_uio_open;
 933         uinfo->release = cnic_uio_close;
 934
 935         uinfo->priv = dev;
 936
 937         ret = uio_register_device(&dev->pcidev->dev, uinfo);
 938         if (ret) {
 939                 kfree(uinfo);
 940                 return ret;
 941         }
 942
 943         cp->cnic_uinfo = uinfo;
 944         return 0;
 945 }
 946
 947 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
 948 {
 949         struct cnic_local *cp = dev->cnic_priv;
 950         int ret;
 951
 952         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
 953         if (ret)
 954                 goto error;
 955         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
 956
 957         ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1);
 958         if (ret)
 959                 goto error;
 960         cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
 961
 962         ret = cnic_alloc_context(dev);
 963         if (ret)
 964                 goto error;
 965
 966         ret = cnic_alloc_l2_rings(dev, 2);
 967         if (ret)
 968                 goto error;
 969
 970         ret = cnic_alloc_uio(dev);
 971         if (ret)
 972                 goto error;
 973
 974         return 0;
 975
 976 error:
 977         cnic_free_resc(dev);
 978         return ret;
 979 }
 980
 981 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
 982 {
 983         struct cnic_local *cp = dev->cnic_priv;
 984         struct cnic_eth_dev *ethdev = cp->ethdev;
 985         int ctx_blk_size = cp->ethdev->ctx_blk_size;
 986         int total_mem, blks, i, cid_space;
 987
 988         if (BNX2X_ISCSI_START_CID < ethdev->starting_cid)
 989                 return -EINVAL;
 990
 991         cid_space = MAX_ISCSI_TBL_SZ +
 992                     (BNX2X_ISCSI_START_CID - ethdev->starting_cid);
 993
 994         total_mem = BNX2X_CONTEXT_MEM_SIZE * cid_space;
 995         blks = total_mem / ctx_blk_size;
 996         if (total_mem % ctx_blk_size)
 997                 blks++;
 998
 999         if (blks > cp->ethdev->ctx_tbl_len)
1000                 return -ENOMEM;
1001
1002         cp->ctx_arr = kzalloc(blks * sizeof(struct cnic_ctx), GFP_KERNEL);
1003         if (cp->ctx_arr == NULL)
1004                 return -ENOMEM;
1005
1006         cp->ctx_blks = blks;
1007         cp->ctx_blk_size = ctx_blk_size;
1008         if (BNX2X_CHIP_IS_E1H(cp->chip_id))
1009                 cp->ctx_align = 0;
1010         else
1011                 cp->ctx_align = ctx_blk_size;
1012
1013         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1014
1015         for (i = 0; i < blks; i++) {
1016                 cp->ctx_arr[i].ctx =
1017                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1018                                            &cp->ctx_arr[i].mapping,
1019                                            GFP_KERNEL);
1020                 if (cp->ctx_arr[i].ctx == NULL)
1021                         return -ENOMEM;
1022
1023                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1024                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1025                                 cnic_free_context(dev);
1026                                 cp->ctx_blk_size += cp->ctx_align;
1027                                 i = -1;
1028                                 continue;
1029                         }
1030                 }
1031         }
1032         return 0;
1033 }
1034
1035 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1036 {
1037         struct cnic_local *cp = dev->cnic_priv;
1038         int i, j, n, ret, pages;
1039         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1040
1041         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1042                                 GFP_KERNEL);
1043         if (!cp->iscsi_tbl)
1044                 goto error;
1045
1046         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1047                                   MAX_CNIC_L5_CONTEXT, GFP_KERNEL);
1048         if (!cp->ctx_tbl)
1049                 goto error;
1050
1051         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1052                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1053                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1054         }
1055
1056         pages = PAGE_ALIGN(MAX_CNIC_L5_CONTEXT * CNIC_KWQ16_DATA_SIZE) /
1057                 PAGE_SIZE;
1058
1059         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1060         if (ret)
1061                 return -ENOMEM;
1062
1063         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1064         for (i = 0, j = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1065                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1066
1067                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1068                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1069                                                    off;
1070
1071                 if ((i % n) == (n - 1))
1072                         j++;
1073         }
1074
1075         ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 0);
1076         if (ret)
1077                 goto error;
1078         cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
1079
1080         for (i = 0; i < KCQ_PAGE_CNT; i++) {
1081                 struct bnx2x_bd_chain_next *next =
1082                         (struct bnx2x_bd_chain_next *)
1083                         &cp->kcq[i][MAX_KCQE_CNT];
1084                 int j = i + 1;
1085
1086                 if (j >= KCQ_PAGE_CNT)
1087                         j = 0;
1088                 next->addr_hi = (u64) cp->kcq_info.pg_map_arr[j] >> 32;
1089                 next->addr_lo = cp->kcq_info.pg_map_arr[j] & 0xffffffff;
1090         }
1091
1092         pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
1093                            BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
1094         ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
1095         if (ret)
1096                 goto error;
1097
1098         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1099         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1100         if (ret)
1101                 goto error;
1102
1103         ret = cnic_alloc_bnx2x_context(dev);
1104         if (ret)
1105                 goto error;
1106
1107         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1108
1109         memset(cp->status_blk.bnx2x, 0, sizeof(*cp->status_blk.bnx2x));
1110
1111         cp->l2_rx_ring_size = 15;
1112
1113         ret = cnic_alloc_l2_rings(dev, 4);
1114         if (ret)
1115                 goto error;
1116
1117         ret = cnic_alloc_uio(dev);
1118         if (ret)
1119                 goto error;
1120
1121         return 0;
1122
1123 error:
1124         cnic_free_resc(dev);
1125         return -ENOMEM;
1126 }
1127
1128 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1129 {
1130         return cp->max_kwq_idx -
1131                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1132 }
1133
1134 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1135                                   u32 num_wqes)
1136 {
1137         struct cnic_local *cp = dev->cnic_priv;
1138         struct kwqe *prod_qe;
1139         u16 prod, sw_prod, i;
1140
1141         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1142                 return -EAGAIN;         /* bnx2 is down */
1143
1144         spin_lock_bh(&cp->cnic_ulp_lock);
1145         if (num_wqes > cnic_kwq_avail(cp) &&
1146             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1147                 spin_unlock_bh(&cp->cnic_ulp_lock);
1148                 return -EAGAIN;
1149         }
1150
1151         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1152
1153         prod = cp->kwq_prod_idx;
1154         sw_prod = prod & MAX_KWQ_IDX;
1155         for (i = 0; i < num_wqes; i++) {
1156                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1157                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1158                 prod++;
1159                 sw_prod = prod & MAX_KWQ_IDX;
1160         }
1161         cp->kwq_prod_idx = prod;
1162
1163         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1164
1165         spin_unlock_bh(&cp->cnic_ulp_lock);
1166         return 0;
1167 }
1168
1169 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1170                                    union l5cm_specific_data *l5_data)
1171 {
1172         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1173         dma_addr_t map;
1174
1175         map = ctx->kwqe_data_mapping;
1176         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1177         l5_data->phy_address.hi = (u64) map >> 32;
1178         return ctx->kwqe_data;
1179 }
1180
1181 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1182                                 u32 type, union l5cm_specific_data *l5_data)
1183 {
1184         struct cnic_local *cp = dev->cnic_priv;
1185         struct l5cm_spe kwqe;
1186         struct kwqe_16 *kwq[1];
1187         int ret;
1188
1189         kwqe.hdr.conn_and_cmd_data =
1190                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1191                              BNX2X_HW_CID(cid, cp->func)));
1192         kwqe.hdr.type = cpu_to_le16(type);
1193         kwqe.hdr.reserved = 0;
1194         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1195         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1196
1197         kwq[0] = (struct kwqe_16 *) &kwqe;
1198
1199         spin_lock_bh(&cp->cnic_ulp_lock);
1200         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1201         spin_unlock_bh(&cp->cnic_ulp_lock);
1202
1203         if (ret == 1)
1204                 return 0;
1205
1206         return -EBUSY;
1207 }
1208
1209 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1210                                    struct kcqe *cqes[], u32 num_cqes)
1211 {
1212         struct cnic_local *cp = dev->cnic_priv;
1213         struct cnic_ulp_ops *ulp_ops;
1214
1215         rcu_read_lock();
1216         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1217         if (likely(ulp_ops)) {
1218                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1219                                           cqes, num_cqes);
1220         }
1221         rcu_read_unlock();
1222 }
1223
1224 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1225 {
1226         struct cnic_local *cp = dev->cnic_priv;
1227         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1228         int func = cp->func, pages;
1229         int hq_bds;
1230
1231         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1232         cp->num_ccells = req1->num_ccells_per_conn;
1233         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1234                               cp->num_iscsi_tasks;
1235         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1236                         BNX2X_ISCSI_R2TQE_SIZE;
1237         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1238         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1239         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1240         cp->num_cqs = req1->num_cqs;
1241
1242         if (!dev->max_iscsi_conn)
1243                 return 0;
1244
1245         /* init Tstorm RAM */
1246         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(func),
1247                   req1->rq_num_wqes);
1248         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1249                   PAGE_SIZE);
1250         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1251                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1252         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1253                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1254                   req1->num_tasks_per_conn);
1255
1256         /* init Ustorm RAM */
1257         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1258                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(func),
1259                   req1->rq_buffer_size);
1260         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1261                   PAGE_SIZE);
1262         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1263                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1264         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1265                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1266                   req1->num_tasks_per_conn);
1267         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(func),
1268                   req1->rq_num_wqes);
1269         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(func),
1270                   req1->cq_num_wqes);
1271         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1272                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1273
1274         /* init Xstorm RAM */
1275         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1276                   PAGE_SIZE);
1277         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1278                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1279         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1280                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1281                   req1->num_tasks_per_conn);
1282         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1283                   hq_bds);
1284         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(func),
1285                   req1->num_tasks_per_conn);
1286         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
1287                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1288
1289         /* init Cstorm RAM */
1290         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
1291                   PAGE_SIZE);
1292         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1293                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
1294         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1295                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
1296                   req1->num_tasks_per_conn);
1297         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(func),
1298                   req1->cq_num_wqes);
1299         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(func),
1300                   hq_bds);
1301
1302         return 0;
1303 }
1304
1305 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1306 {
1307         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1308         struct cnic_local *cp = dev->cnic_priv;
1309         int func = cp->func;
1310         struct iscsi_kcqe kcqe;
1311         struct kcqe *cqes[1];
1312
1313         memset(&kcqe, 0, sizeof(kcqe));
1314         if (!dev->max_iscsi_conn) {
1315                 kcqe.completion_status =
1316                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1317                 goto done;
1318         }
1319
1320         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1321                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1322         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1323                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1324                 req2->error_bit_map[1]);
1325
1326         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1327                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1328         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1329                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
1330         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1331                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
1332                 req2->error_bit_map[1]);
1333
1334         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1335                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
1336
1337         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1338
1339 done:
1340         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1341         cqes[0] = (struct kcqe *) &kcqe;
1342         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1343
1344         return 0;
1345 }
1346
1347 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1348 {
1349         struct cnic_local *cp = dev->cnic_priv;
1350         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1351
1352         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1353                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1354
1355                 cnic_free_dma(dev, &iscsi->hq_info);
1356                 cnic_free_dma(dev, &iscsi->r2tq_info);
1357                 cnic_free_dma(dev, &iscsi->task_array_info);
1358         }
1359         cnic_free_id(&cp->cid_tbl, ctx->cid);
1360         ctx->cid = 0;
1361 }
1362
1363 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1364 {
1365         u32 cid;
1366         int ret, pages;
1367         struct cnic_local *cp = dev->cnic_priv;
1368         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1369         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1370
1371         cid = cnic_alloc_new_id(&cp->cid_tbl);
1372         if (cid == -1) {
1373                 ret = -ENOMEM;
1374                 goto error;
1375         }
1376
1377         ctx->cid = cid;
1378         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1379
1380         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1381         if (ret)
1382                 goto error;
1383
1384         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1385         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1386         if (ret)
1387                 goto error;
1388
1389         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1390         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1391         if (ret)
1392                 goto error;
1393
1394         return 0;
1395
1396 error:
1397         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1398         return ret;
1399 }
1400
1401 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1402                                 struct regpair *ctx_addr)
1403 {
1404         struct cnic_local *cp = dev->cnic_priv;
1405         struct cnic_eth_dev *ethdev = cp->ethdev;
1406         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1407         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1408         unsigned long align_off = 0;
1409         dma_addr_t ctx_map;
1410         void *ctx;
1411
1412         if (cp->ctx_align) {
1413                 unsigned long mask = cp->ctx_align - 1;
1414
1415                 if (cp->ctx_arr[blk].mapping & mask)
1416                         align_off = cp->ctx_align -
1417                                     (cp->ctx_arr[blk].mapping & mask);
1418         }
1419         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1420                 (off * BNX2X_CONTEXT_MEM_SIZE);
1421         ctx = cp->ctx_arr[blk].ctx + align_off +
1422               (off * BNX2X_CONTEXT_MEM_SIZE);
1423         if (init)
1424                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1425
1426         ctx_addr->lo = ctx_map & 0xffffffff;
1427         ctx_addr->hi = (u64) ctx_map >> 32;
1428         return ctx;
1429 }
1430
1431 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1432                                 u32 num)
1433 {
1434         struct cnic_local *cp = dev->cnic_priv;
1435         struct iscsi_kwqe_conn_offload1 *req1 =
1436                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1437         struct iscsi_kwqe_conn_offload2 *req2 =
1438                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1439         struct iscsi_kwqe_conn_offload3 *req3;
1440         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1441         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1442         u32 cid = ctx->cid;
1443         u32 hw_cid = BNX2X_HW_CID(cid, cp->func);
1444         struct iscsi_context *ictx;
1445         struct regpair context_addr;
1446         int i, j, n = 2, n_max;
1447
1448         ctx->ctx_flags = 0;
1449         if (!req2->num_additional_wqes)
1450                 return -EINVAL;
1451
1452         n_max = req2->num_additional_wqes + 2;
1453
1454         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1455         if (ictx == NULL)
1456                 return -ENOMEM;
1457
1458         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1459
1460         ictx->xstorm_ag_context.hq_prod = 1;
1461
1462         ictx->xstorm_st_context.iscsi.first_burst_length =
1463                 ISCSI_DEF_FIRST_BURST_LEN;
1464         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1465                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1466         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1467                 req1->sq_page_table_addr_lo;
1468         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1469                 req1->sq_page_table_addr_hi;
1470         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1471         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1472         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1473                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1474         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1475                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1476         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1477                 iscsi->hq_info.pgtbl[0];
1478         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1479                 iscsi->hq_info.pgtbl[1];
1480         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1481                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1482         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1483                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1484         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1485                 iscsi->r2tq_info.pgtbl[0];
1486         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1487                 iscsi->r2tq_info.pgtbl[1];
1488         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1489                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1490         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1491                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1492         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1493                 BNX2X_ISCSI_PBL_NOT_CACHED;
1494         ictx->xstorm_st_context.iscsi.flags.flags |=
1495                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1496         ictx->xstorm_st_context.iscsi.flags.flags |=
1497                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1498
1499         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1500         /* TSTORM requires the base address of RQ DB & not PTE */
1501         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1502                 req2->rq_page_table_addr_lo & PAGE_MASK;
1503         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1504                 req2->rq_page_table_addr_hi;
1505         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1506         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1507         ictx->tstorm_st_context.tcp.flags2 |=
1508                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1509
1510         ictx->timers_context.flags |= ISCSI_TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1511
1512         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1513                 req2->rq_page_table_addr_lo;
1514         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1515                 req2->rq_page_table_addr_hi;
1516         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1517         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1518         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1519                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1520         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1521                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1522         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1523                 iscsi->r2tq_info.pgtbl[0];
1524         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1525                 iscsi->r2tq_info.pgtbl[1];
1526         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1527                 req1->cq_page_table_addr_lo;
1528         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1529                 req1->cq_page_table_addr_hi;
1530         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1531         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1532         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1533         ictx->ustorm_st_context.task_pbe_cache_index =
1534                 BNX2X_ISCSI_PBL_NOT_CACHED;
1535         ictx->ustorm_st_context.task_pdu_cache_index =
1536                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1537
1538         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1539                 if (j == 3) {
1540                         if (n >= n_max)
1541                                 break;
1542                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1543                         j = 0;
1544                 }
1545                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1546                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1547                         req3->qp_first_pte[j].hi;
1548                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1549                         req3->qp_first_pte[j].lo;
1550         }
1551
1552         ictx->ustorm_st_context.task_pbl_base.lo =
1553                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1554         ictx->ustorm_st_context.task_pbl_base.hi =
1555                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1556         ictx->ustorm_st_context.tce_phy_addr.lo =
1557                 iscsi->task_array_info.pgtbl[0];
1558         ictx->ustorm_st_context.tce_phy_addr.hi =
1559                 iscsi->task_array_info.pgtbl[1];
1560         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1561         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1562         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1563         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1564                 ISCSI_DEF_MAX_BURST_LEN;
1565         ictx->ustorm_st_context.negotiated_rx |=
1566                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1567                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1568
1569         ictx->cstorm_st_context.hq_pbl_base.lo =
1570                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1571         ictx->cstorm_st_context.hq_pbl_base.hi =
1572                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1573         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1574         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1575         ictx->cstorm_st_context.task_pbl_base.lo =
1576                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1577         ictx->cstorm_st_context.task_pbl_base.hi =
1578                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1579         /* CSTORM and USTORM initialization is different, CSTORM requires
1580          * CQ DB base & not PTE addr */
1581         ictx->cstorm_st_context.cq_db_base.lo =
1582                 req1->cq_page_table_addr_lo & PAGE_MASK;
1583         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1584         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1585         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1586         for (i = 0; i < cp->num_cqs; i++) {
1587                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1588                         ISCSI_INITIAL_SN;
1589                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1590                         ISCSI_INITIAL_SN;
1591         }
1592
1593         ictx->xstorm_ag_context.cdu_reserved =
1594                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1595                                        ISCSI_CONNECTION_TYPE);
1596         ictx->ustorm_ag_context.cdu_usage =
1597                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1598                                        ISCSI_CONNECTION_TYPE);
1599         return 0;
1600
1601 }
1602
1603 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1604                                    u32 num, int *work)
1605 {
1606         struct iscsi_kwqe_conn_offload1 *req1;
1607         struct iscsi_kwqe_conn_offload2 *req2;
1608         struct cnic_local *cp = dev->cnic_priv;
1609         struct iscsi_kcqe kcqe;
1610         struct kcqe *cqes[1];
1611         u32 l5_cid;
1612         int ret;
1613
1614         if (num < 2) {
1615                 *work = num;
1616                 return -EINVAL;
1617         }
1618
1619         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1620         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1621         if ((num - 2) < req2->num_additional_wqes) {
1622                 *work = num;
1623                 return -EINVAL;
1624         }
1625         *work = 2 + req2->num_additional_wqes;;
1626
1627         l5_cid = req1->iscsi_conn_id;
1628         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1629                 return -EINVAL;
1630
1631         memset(&kcqe, 0, sizeof(kcqe));
1632         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1633         kcqe.iscsi_conn_id = l5_cid;
1634         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1635
1636         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1637                 atomic_dec(&cp->iscsi_conn);
1638                 ret = 0;
1639                 goto done;
1640         }
1641         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1642         if (ret) {
1643                 atomic_dec(&cp->iscsi_conn);
1644                 ret = 0;
1645                 goto done;
1646         }
1647         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1648         if (ret < 0) {
1649                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1650                 atomic_dec(&cp->iscsi_conn);
1651                 goto done;
1652         }
1653
1654         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1655         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp->ctx_tbl[l5_cid].cid,
1656                                                   cp->func);
1657
1658 done:
1659         cqes[0] = (struct kcqe *) &kcqe;
1660         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1661         return ret;
1662 }
1663
1664
1665 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1666 {
1667         struct cnic_local *cp = dev->cnic_priv;
1668         struct iscsi_kwqe_conn_update *req =
1669                 (struct iscsi_kwqe_conn_update *) kwqe;
1670         void *data;
1671         union l5cm_specific_data l5_data;
1672         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1673         int ret;
1674
1675         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1676                 return -EINVAL;
1677
1678         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1679         if (!data)
1680                 return -ENOMEM;
1681
1682         memcpy(data, kwqe, sizeof(struct kwqe));
1683
1684         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1685                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1686         return ret;
1687 }
1688
1689 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1690 {
1691         struct cnic_local *cp = dev->cnic_priv;
1692         struct iscsi_kwqe_conn_destroy *req =
1693                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1694         union l5cm_specific_data l5_data;
1695         u32 l5_cid = req->reserved0;
1696         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1697         int ret = 0;
1698         struct iscsi_kcqe kcqe;
1699         struct kcqe *cqes[1];
1700
1701         if (!(ctx->ctx_flags & CTX_FL_OFFLD_START))
1702                 goto skip_cfc_delete;
1703
1704         while (!time_after(jiffies, ctx->timestamp + (2 * HZ)))
1705                 msleep(250);
1706
1707         init_waitqueue_head(&ctx->waitq);
1708         ctx->wait_cond = 0;
1709         memset(&l5_data, 0, sizeof(l5_data));
1710         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
1711                                   req->context_id,
1712                                   ETH_CONNECTION_TYPE |
1713                                   (1 << SPE_HDR_COMMON_RAMROD_SHIFT),
1714                                   &l5_data);
1715         if (ret == 0)
1716                 wait_event(ctx->waitq, ctx->wait_cond);
1717
1718 skip_cfc_delete:
1719         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1720
1721         atomic_dec(&cp->iscsi_conn);
1722
1723         memset(&kcqe, 0, sizeof(kcqe));
1724         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1725         kcqe.iscsi_conn_id = l5_cid;
1726         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1727         kcqe.iscsi_conn_context_id = req->context_id;
1728
1729         cqes[0] = (struct kcqe *) &kcqe;
1730         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1731
1732         return ret;
1733 }
1734
1735 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1736                                       struct l4_kwq_connect_req1 *kwqe1,
1737                                       struct l4_kwq_connect_req3 *kwqe3,
1738                                       struct l5cm_active_conn_buffer *conn_buf)
1739 {
1740         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1741         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1742                 &conn_buf->xstorm_conn_buffer;
1743         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1744                 &conn_buf->tstorm_conn_buffer;
1745         struct regpair context_addr;
1746         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1747         struct in6_addr src_ip, dst_ip;
1748         int i;
1749         u32 *addrp;
1750
1751         addrp = (u32 *) &conn_addr->local_ip_addr;
1752         for (i = 0; i < 4; i++, addrp++)
1753                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1754
1755         addrp = (u32 *) &conn_addr->remote_ip_addr;
1756         for (i = 0; i < 4; i++, addrp++)
1757                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1758
1759         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1760
1761         xstorm_buf->context_addr.hi = context_addr.hi;
1762         xstorm_buf->context_addr.lo = context_addr.lo;
1763         xstorm_buf->mss = 0xffff;
1764         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1765         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1766                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1767         xstorm_buf->pseudo_header_checksum =
1768                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1769
1770         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1771                 tstorm_buf->params |=
1772                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1773         if (kwqe3->ka_timeout) {
1774                 tstorm_buf->ka_enable = 1;
1775                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1776                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1777                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1778         }
1779         tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1780         tstorm_buf->snd_buf = kwqe3->snd_buf;
1781         tstorm_buf->max_rt_time = 0xffffffff;
1782 }
1783
1784 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1785 {
1786         struct cnic_local *cp = dev->cnic_priv;
1787         int func = CNIC_FUNC(cp);
1788         u8 *mac = dev->mac_addr;
1789
1790         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1791                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(func), mac[0]);
1792         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1793                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(func), mac[1]);
1794         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1795                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(func), mac[2]);
1796         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1797                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(func), mac[3]);
1798         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1799                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(func), mac[4]);
1800         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1801                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(func), mac[5]);
1802
1803         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1804                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func), mac[5]);
1805         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1806                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1807                  mac[4]);
1808         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1809                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func), mac[3]);
1810         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1811                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
1812                  mac[2]);
1813         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1814                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 2,
1815                  mac[1]);
1816         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1817                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 3,
1818                  mac[0]);
1819 }
1820
1821 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1822 {
1823         struct cnic_local *cp = dev->cnic_priv;
1824         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1825         u16 tstorm_flags = 0;
1826
1827         if (tcp_ts) {
1828                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1829                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1830         }
1831
1832         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1833                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), xstorm_flags);
1834
1835         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1836                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), tstorm_flags);
1837 }
1838
1839 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
1840                               u32 num, int *work)
1841 {
1842         struct cnic_local *cp = dev->cnic_priv;
1843         struct l4_kwq_connect_req1 *kwqe1 =
1844                 (struct l4_kwq_connect_req1 *) wqes[0];
1845         struct l4_kwq_connect_req3 *kwqe3;
1846         struct l5cm_active_conn_buffer *conn_buf;
1847         struct l5cm_conn_addr_params *conn_addr;
1848         union l5cm_specific_data l5_data;
1849         u32 l5_cid = kwqe1->pg_cid;
1850         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
1851         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1852         int ret;
1853
1854         if (num < 2) {
1855                 *work = num;
1856                 return -EINVAL;
1857         }
1858
1859         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
1860                 *work = 3;
1861         else
1862                 *work = 2;
1863
1864         if (num < *work) {
1865                 *work = num;
1866                 return -EINVAL;
1867         }
1868
1869         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
1870                 netdev_err(dev->netdev, "conn_buf size too big\n");
1871                 return -ENOMEM;
1872         }
1873         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1874         if (!conn_buf)
1875                 return -ENOMEM;
1876
1877         memset(conn_buf, 0, sizeof(*conn_buf));
1878
1879         conn_addr = &conn_buf->conn_addr_buf;
1880         conn_addr->remote_addr_0 = csk->ha[0];
1881         conn_addr->remote_addr_1 = csk->ha[1];
1882         conn_addr->remote_addr_2 = csk->ha[2];
1883         conn_addr->remote_addr_3 = csk->ha[3];
1884         conn_addr->remote_addr_4 = csk->ha[4];
1885         conn_addr->remote_addr_5 = csk->ha[5];
1886
1887         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
1888                 struct l4_kwq_connect_req2 *kwqe2 =
1889                         (struct l4_kwq_connect_req2 *) wqes[1];
1890
1891                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
1892                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
1893                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
1894
1895                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
1896                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
1897                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
1898                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
1899         }
1900         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
1901
1902         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
1903         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
1904         conn_addr->local_tcp_port = kwqe1->src_port;
1905         conn_addr->remote_tcp_port = kwqe1->dst_port;
1906
1907         conn_addr->pmtu = kwqe3->pmtu;
1908         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
1909
1910         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1911                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->func), csk->vlan_id);
1912
1913         cnic_bnx2x_set_tcp_timestamp(dev,
1914                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
1915
1916         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
1917                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1918         if (!ret)
1919                 ctx->ctx_flags |= CTX_FL_OFFLD_START;
1920
1921         return ret;
1922 }
1923
1924 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
1925 {
1926         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
1927         union l5cm_specific_data l5_data;
1928         int ret;
1929
1930         memset(&l5_data, 0, sizeof(l5_data));
1931         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
1932                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1933         return ret;
1934 }
1935
1936 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
1937 {
1938         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
1939         union l5cm_specific_data l5_data;
1940         int ret;
1941
1942         memset(&l5_data, 0, sizeof(l5_data));
1943         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
1944                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
1945         return ret;
1946 }
1947 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1948 {
1949         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
1950         struct l4_kcq kcqe;
1951         struct kcqe *cqes[1];
1952
1953         memset(&kcqe, 0, sizeof(kcqe));
1954         kcqe.pg_host_opaque = req->host_opaque;
1955         kcqe.pg_cid = req->host_opaque;
1956         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
1957         cqes[0] = (struct kcqe *) &kcqe;
1958         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1959         return 0;
1960 }
1961
1962 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
1963 {
1964         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
1965         struct l4_kcq kcqe;
1966         struct kcqe *cqes[1];
1967
1968         memset(&kcqe, 0, sizeof(kcqe));
1969         kcqe.pg_host_opaque = req->pg_host_opaque;
1970         kcqe.pg_cid = req->pg_cid;
1971         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
1972         cqes[0] = (struct kcqe *) &kcqe;
1973         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
1974         return 0;
1975 }
1976
1977 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1978                                    u32 num_wqes)
1979 {
1980         int i, work, ret;
1981         u32 opcode;
1982         struct kwqe *kwqe;
1983
1984         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1985                 return -EAGAIN;         /* bnx2 is down */
1986
1987         for (i = 0; i < num_wqes; ) {
1988                 kwqe = wqes[i];
1989                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
1990                 work = 1;
1991
1992                 switch (opcode) {
1993                 case ISCSI_KWQE_OPCODE_INIT1:
1994                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
1995                         break;
1996                 case ISCSI_KWQE_OPCODE_INIT2:
1997                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
1998                         break;
1999                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2000                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2001                                                      num_wqes - i, &work);
2002                         break;
2003                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2004                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2005                         break;
2006                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2007                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2008                         break;
2009                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2010                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2011                                                  &work);
2012                         break;
2013                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2014                         ret = cnic_bnx2x_close(dev, kwqe);
2015                         break;
2016                 case L4_KWQE_OPCODE_VALUE_RESET:
2017                         ret = cnic_bnx2x_reset(dev, kwqe);
2018                         break;
2019                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2020                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2021                         break;
2022                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2023                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2024                         break;
2025                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2026                         ret = 0;
2027                         break;
2028                 default:
2029                         ret = 0;
2030                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2031                                    opcode);
2032                         break;
2033                 }
2034                 if (ret < 0)
2035                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2036                                    opcode);
2037                 i += work;
2038         }
2039         return 0;
2040 }
2041
2042 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2043 {
2044         struct cnic_local *cp = dev->cnic_priv;
2045         int i, j;
2046
2047         i = 0;
2048         j = 1;
2049         while (num_cqes) {
2050                 struct cnic_ulp_ops *ulp_ops;
2051                 int ulp_type;
2052                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2053                 u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;
2054
2055                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2056                         cnic_kwq_completion(dev, 1);
2057
2058                 while (j < num_cqes) {
2059                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2060
2061                         if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
2062                                 break;
2063
2064                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2065                                 cnic_kwq_completion(dev, 1);
2066                         j++;
2067                 }
2068
2069                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2070                         ulp_type = CNIC_ULP_RDMA;
2071                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2072                         ulp_type = CNIC_ULP_ISCSI;
2073                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2074                         ulp_type = CNIC_ULP_L4;
2075                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2076                         goto end;
2077                 else {
2078                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2079                                    kcqe_op_flag);
2080                         goto end;
2081                 }
2082
2083                 rcu_read_lock();
2084                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2085                 if (likely(ulp_ops)) {
2086                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2087                                                   cp->completed_kcq + i, j);
2088                 }
2089                 rcu_read_unlock();
2090 end:
2091                 num_cqes -= j;
2092                 i += j;
2093                 j = 1;
2094         }
2095 }
2096
2097 static u16 cnic_bnx2_next_idx(u16 idx)
2098 {
2099         return idx + 1;
2100 }
2101
2102 static u16 cnic_bnx2_hw_idx(u16 idx)
2103 {
2104         return idx;
2105 }
2106
2107 static u16 cnic_bnx2x_next_idx(u16 idx)
2108 {
2109         idx++;
2110         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2111                 idx++;
2112
2113         return idx;
2114 }
2115
2116 static u16 cnic_bnx2x_hw_idx(u16 idx)
2117 {
2118         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2119                 idx++;
2120         return idx;
2121 }
2122
2123 static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
2124 {
2125         struct cnic_local *cp = dev->cnic_priv;
2126         u16 i, ri, last;
2127         struct kcqe *kcqe;
2128         int kcqe_cnt = 0, last_cnt = 0;
2129
2130         i = ri = last = *sw_prod;
2131         ri &= MAX_KCQ_IDX;
2132
2133         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2134                 kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2135                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2136                 i = cp->next_idx(i);
2137                 ri = i & MAX_KCQ_IDX;
2138                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2139                         last_cnt = kcqe_cnt;
2140                         last = i;
2141                 }
2142         }
2143
2144         *sw_prod = last;
2145         return last_cnt;
2146 }
2147
2148 static int cnic_l2_completion(struct cnic_local *cp)
2149 {
2150         u16 hw_cons, sw_cons;
2151         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2152                                         (cp->l2_ring + (2 * BCM_PAGE_SIZE));
2153         u32 cmd;
2154         int comp = 0;
2155
2156         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2157                 return 0;
2158
2159         hw_cons = *cp->rx_cons_ptr;
2160         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2161                 hw_cons++;
2162
2163         sw_cons = cp->rx_cons;
2164         while (sw_cons != hw_cons) {
2165                 u8 cqe_fp_flags;
2166
2167                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2168                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2169                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2170                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2171                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2172                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2173                             cmd == RAMROD_CMD_ID_ETH_HALT)
2174                                 comp++;
2175                 }
2176                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2177         }
2178         return comp;
2179 }
2180
2181 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2182 {
2183         u16 rx_cons = *cp->rx_cons_ptr;
2184         u16 tx_cons = *cp->tx_cons_ptr;
2185         int comp = 0;
2186
2187         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2188                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2189                         comp = cnic_l2_completion(cp);
2190
2191                 cp->tx_cons = tx_cons;
2192                 cp->rx_cons = rx_cons;
2193
2194                 uio_event_notify(cp->cnic_uinfo);
2195         }
2196         if (comp)
2197                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2198 }
2199
2200 static int cnic_service_bnx2(void *data, void *status_blk)
2201 {
2202         struct cnic_dev *dev = data;
2203         struct status_block *sblk = status_blk;
2204         struct cnic_local *cp = dev->cnic_priv;
2205         u32 status_idx = sblk->status_idx;
2206         u16 hw_prod, sw_prod;
2207         int kcqe_cnt;
2208
2209         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2210                 return status_idx;
2211
2212         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2213
2214         hw_prod = sblk->status_completion_producer_index;
2215         sw_prod = cp->kcq_prod_idx;
2216         while (sw_prod != hw_prod) {
2217                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2218                 if (kcqe_cnt == 0)
2219                         goto done;
2220
2221                 service_kcqes(dev, kcqe_cnt);
2222
2223                 /* Tell compiler that status_blk fields can change. */
2224                 barrier();
2225                 if (status_idx != sblk->status_idx) {
2226                         status_idx = sblk->status_idx;
2227                         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2228                         hw_prod = sblk->status_completion_producer_index;
2229                 } else
2230                         break;
2231         }
2232
2233 done:
2234         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2235
2236         cp->kcq_prod_idx = sw_prod;
2237
2238         cnic_chk_pkt_rings(cp);
2239         return status_idx;
2240 }
2241
2242 static void cnic_service_bnx2_msix(unsigned long data)
2243 {
2244         struct cnic_dev *dev = (struct cnic_dev *) data;
2245         struct cnic_local *cp = dev->cnic_priv;
2246         struct status_block_msix *status_blk = cp->status_blk.bnx2;
2247         u32 status_idx = status_blk->status_idx;
2248         u16 hw_prod, sw_prod;
2249         int kcqe_cnt;
2250
2251         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2252
2253         hw_prod = status_blk->status_completion_producer_index;
2254         sw_prod = cp->kcq_prod_idx;
2255         while (sw_prod != hw_prod) {
2256                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2257                 if (kcqe_cnt == 0)
2258                         goto done;
2259
2260                 service_kcqes(dev, kcqe_cnt);
2261
2262                 /* Tell compiler that status_blk fields can change. */
2263                 barrier();
2264                 if (status_idx != status_blk->status_idx) {
2265                         status_idx = status_blk->status_idx;
2266                         cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
2267                         hw_prod = status_blk->status_completion_producer_index;
2268                 } else
2269                         break;
2270         }
2271
2272 done:
2273         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
2274         cp->kcq_prod_idx = sw_prod;
2275
2276         cnic_chk_pkt_rings(cp);
2277
2278         cp->last_status_idx = status_idx;
2279         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2280                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2281 }
2282
2283 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2284 {
2285         struct cnic_dev *dev = dev_instance;
2286         struct cnic_local *cp = dev->cnic_priv;
2287         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2288
2289         if (cp->ack_int)
2290                 cp->ack_int(dev);
2291
2292         prefetch(cp->status_blk.gen);
2293         prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2294
2295         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2296                 tasklet_schedule(&cp->cnic_irq_task);
2297
2298         return IRQ_HANDLED;
2299 }
2300
2301 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2302                                       u16 index, u8 op, u8 update)
2303 {
2304         struct cnic_local *cp = dev->cnic_priv;
2305         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2306                        COMMAND_REG_INT_ACK);
2307         struct igu_ack_register igu_ack;
2308
2309         igu_ack.status_block_index = index;
2310         igu_ack.sb_id_and_flags =
2311                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2312                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2313                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2314                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2315
2316         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2317 }
2318
2319 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2320 {
2321         struct cnic_local *cp = dev->cnic_priv;
2322
2323         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID, 0,
2324                            IGU_INT_DISABLE, 0);
2325 }
2326
2327 static void cnic_service_bnx2x_bh(unsigned long data)
2328 {
2329         struct cnic_dev *dev = (struct cnic_dev *) data;
2330         struct cnic_local *cp = dev->cnic_priv;
2331         u16 hw_prod, sw_prod;
2332         struct cstorm_status_block_c *sblk =
2333                 &cp->status_blk.bnx2x->c_status_block;
2334         u32 status_idx = sblk->status_block_index;
2335         int kcqe_cnt;
2336
2337         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2338                 return;
2339
2340         hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2341         hw_prod = cp->hw_idx(hw_prod);
2342         sw_prod = cp->kcq_prod_idx;
2343         while (sw_prod != hw_prod) {
2344                 kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
2345                 if (kcqe_cnt == 0)
2346                         goto done;
2347
2348                 service_kcqes(dev, kcqe_cnt);
2349
2350                 /* Tell compiler that sblk fields can change. */
2351                 barrier();
2352                 if (status_idx == sblk->status_block_index)
2353                         break;
2354
2355                 status_idx = sblk->status_block_index;
2356                 hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
2357                 hw_prod = cp->hw_idx(hw_prod);
2358         }
2359
2360 done:
2361         CNIC_WR16(dev, cp->kcq_io_addr, sw_prod + MAX_KCQ_IDX);
2362         cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID,
2363                            status_idx, IGU_INT_ENABLE, 1);
2364
2365         cp->kcq_prod_idx = sw_prod;
2366 }
2367
2368 static int cnic_service_bnx2x(void *data, void *status_blk)
2369 {
2370         struct cnic_dev *dev = data;
2371         struct cnic_local *cp = dev->cnic_priv;
2372         u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
2373
2374         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2375                 prefetch(cp->status_blk.bnx2x);
2376                 prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2377
2378                 tasklet_schedule(&cp->cnic_irq_task);
2379                 cnic_chk_pkt_rings(cp);
2380         }
2381
2382         return 0;
2383 }
2384
2385 static void cnic_ulp_stop(struct cnic_dev *dev)
2386 {
2387         struct cnic_local *cp = dev->cnic_priv;
2388         int if_type;
2389
2390         if (cp->cnic_uinfo)
2391                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2392
2393         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2394                 struct cnic_ulp_ops *ulp_ops;
2395
2396                 mutex_lock(&cnic_lock);
2397                 ulp_ops = cp->ulp_ops[if_type];
2398                 if (!ulp_ops) {
2399                         mutex_unlock(&cnic_lock);
2400                         continue;
2401                 }
2402                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2403                 mutex_unlock(&cnic_lock);
2404
2405                 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2406                         ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2407
2408                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2409         }
2410 }
2411
2412 static void cnic_ulp_start(struct cnic_dev *dev)
2413 {
2414         struct cnic_local *cp = dev->cnic_priv;
2415         int if_type;
2416
2417         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2418                 struct cnic_ulp_ops *ulp_ops;
2419
2420                 mutex_lock(&cnic_lock);
2421                 ulp_ops = cp->ulp_ops[if_type];
2422                 if (!ulp_ops || !ulp_ops->cnic_start) {
2423                         mutex_unlock(&cnic_lock);
2424                         continue;
2425                 }
2426                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2427                 mutex_unlock(&cnic_lock);
2428
2429                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2430                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2431
2432                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2433         }
2434 }
2435
2436 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
2437 {
2438         struct cnic_dev *dev = data;
2439
2440         switch (info->cmd) {
2441         case CNIC_CTL_STOP_CMD:
2442                 cnic_hold(dev);
2443
2444                 cnic_ulp_stop(dev);
2445                 cnic_stop_hw(dev);
2446
2447                 cnic_put(dev);
2448                 break;
2449         case CNIC_CTL_START_CMD:
2450                 cnic_hold(dev);
2451
2452                 if (!cnic_start_hw(dev))
2453                         cnic_ulp_start(dev);
2454
2455                 cnic_put(dev);
2456                 break;
2457         case CNIC_CTL_COMPLETION_CMD: {
2458                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
2459                 u32 l5_cid;
2460                 struct cnic_local *cp = dev->cnic_priv;
2461
2462                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
2463                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2464
2465                         ctx->wait_cond = 1;
2466                         wake_up(&ctx->waitq);
2467                 }
2468                 break;
2469         }
2470         default:
2471                 return -EINVAL;
2472         }
2473         return 0;
2474 }
2475
2476 static void cnic_ulp_init(struct cnic_dev *dev)
2477 {
2478         int i;
2479         struct cnic_local *cp = dev->cnic_priv;
2480
2481         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2482                 struct cnic_ulp_ops *ulp_ops;
2483
2484                 mutex_lock(&cnic_lock);
2485                 ulp_ops = cnic_ulp_tbl[i];
2486                 if (!ulp_ops || !ulp_ops->cnic_init) {
2487                         mutex_unlock(&cnic_lock);
2488                         continue;
2489                 }
2490                 ulp_get(ulp_ops);
2491                 mutex_unlock(&cnic_lock);
2492
2493                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2494                         ulp_ops->cnic_init(dev);
2495
2496                 ulp_put(ulp_ops);
2497         }
2498 }
2499
2500 static void cnic_ulp_exit(struct cnic_dev *dev)
2501 {
2502         int i;
2503         struct cnic_local *cp = dev->cnic_priv;
2504
2505         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
2506                 struct cnic_ulp_ops *ulp_ops;
2507
2508                 mutex_lock(&cnic_lock);
2509                 ulp_ops = cnic_ulp_tbl[i];
2510                 if (!ulp_ops || !ulp_ops->cnic_exit) {
2511                         mutex_unlock(&cnic_lock);
2512                         continue;
2513                 }
2514                 ulp_get(ulp_ops);
2515                 mutex_unlock(&cnic_lock);
2516
2517                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
2518                         ulp_ops->cnic_exit(dev);
2519
2520                 ulp_put(ulp_ops);
2521         }
2522 }
2523
2524 static int cnic_cm_offload_pg(struct cnic_sock *csk)
2525 {
2526         struct cnic_dev *dev = csk->dev;
2527         struct l4_kwq_offload_pg *l4kwqe;
2528         struct kwqe *wqes[1];
2529
2530         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
2531         memset(l4kwqe, 0, sizeof(*l4kwqe));
2532         wqes[0] = (struct kwqe *) l4kwqe;
2533
2534         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
2535         l4kwqe->flags =
2536                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
2537         l4kwqe->l2hdr_nbytes = ETH_HLEN;
2538
2539         l4kwqe->da0 = csk->ha[0];
2540         l4kwqe->da1 = csk->ha[1];
2541         l4kwqe->da2 = csk->ha[2];
2542         l4kwqe->da3 = csk->ha[3];
2543         l4kwqe->da4 = csk->ha[4];
2544         l4kwqe->da5 = csk->ha[5];
2545
2546         l4kwqe->sa0 = dev->mac_addr[0];
2547         l4kwqe->sa1 = dev->mac_addr[1];
2548         l4kwqe->sa2 = dev->mac_addr[2];
2549         l4kwqe->sa3 = dev->mac_addr[3];
2550         l4kwqe->sa4 = dev->mac_addr[4];
2551         l4kwqe->sa5 = dev->mac_addr[5];
2552
2553         l4kwqe->etype = ETH_P_IP;
2554         l4kwqe->ipid_start = DEF_IPID_START;
2555         l4kwqe->host_opaque = csk->l5_cid;
2556
2557         if (csk->vlan_id) {
2558                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
2559                 l4kwqe->vlan_tag = csk->vlan_id;
2560                 l4kwqe->l2hdr_nbytes += 4;
2561         }
2562
2563         return dev->submit_kwqes(dev, wqes, 1);
2564 }
2565
2566 static int cnic_cm_update_pg(struct cnic_sock *csk)
2567 {
2568         struct cnic_dev *dev = csk->dev;
2569         struct l4_kwq_update_pg *l4kwqe;
2570         struct kwqe *wqes[1];
2571
2572         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
2573         memset(l4kwqe, 0, sizeof(*l4kwqe));
2574         wqes[0] = (struct kwqe *) l4kwqe;
2575
2576         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
2577         l4kwqe->flags =
2578                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
2579         l4kwqe->pg_cid = csk->pg_cid;
2580
2581         l4kwqe->da0 = csk->ha[0];
2582         l4kwqe->da1 = csk->ha[1];
2583         l4kwqe->da2 = csk->ha[2];
2584         l4kwqe->da3 = csk->ha[3];
2585         l4kwqe->da4 = csk->ha[4];
2586         l4kwqe->da5 = csk->ha[5];
2587
2588         l4kwqe->pg_host_opaque = csk->l5_cid;
2589         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
2590
2591         return dev->submit_kwqes(dev, wqes, 1);
2592 }
2593
2594 static int cnic_cm_upload_pg(struct cnic_sock *csk)
2595 {
2596         struct cnic_dev *dev = csk->dev;
2597         struct l4_kwq_upload *l4kwqe;
2598         struct kwqe *wqes[1];
2599
2600         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
2601         memset(l4kwqe, 0, sizeof(*l4kwqe));
2602         wqes[0] = (struct kwqe *) l4kwqe;
2603
2604         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
2605         l4kwqe->flags =
2606                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
2607         l4kwqe->cid = csk->pg_cid;
2608
2609         return dev->submit_kwqes(dev, wqes, 1);
2610 }
2611
2612 static int cnic_cm_conn_req(struct cnic_sock *csk)
2613 {
2614         struct cnic_dev *dev = csk->dev;
2615         struct l4_kwq_connect_req1 *l4kwqe1;
2616         struct l4_kwq_connect_req2 *l4kwqe2;
2617         struct l4_kwq_connect_req3 *l4kwqe3;
2618         struct kwqe *wqes[3];
2619         u8 tcp_flags = 0;
2620         int num_wqes = 2;
2621
2622         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
2623         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
2624         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
2625         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
2626         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
2627         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
2628
2629         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
2630         l4kwqe3->flags =
2631                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
2632         l4kwqe3->ka_timeout = csk->ka_timeout;
2633         l4kwqe3->ka_interval = csk->ka_interval;
2634         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
2635         l4kwqe3->tos = csk->tos;
2636         l4kwqe3->ttl = csk->ttl;
2637         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
2638         l4kwqe3->pmtu = csk->mtu;
2639         l4kwqe3->rcv_buf = csk->rcv_buf;
2640         l4kwqe3->snd_buf = csk->snd_buf;
2641         l4kwqe3->seed = csk->seed;
2642
2643         wqes[0] = (struct kwqe *) l4kwqe1;
2644         if (test_bit(SK_F_IPV6, &csk->flags)) {
2645                 wqes[1] = (struct kwqe *) l4kwqe2;
2646                 wqes[2] = (struct kwqe *) l4kwqe3;
2647                 num_wqes = 3;
2648
2649                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
2650                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
2651                 l4kwqe2->flags =
2652                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
2653                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
2654                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
2655                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
2656                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
2657                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
2658                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
2659                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
2660                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
2661                                sizeof(struct tcphdr);
2662         } else {
2663                 wqes[1] = (struct kwqe *) l4kwqe3;
2664                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
2665                                sizeof(struct tcphdr);
2666         }
2667
2668         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
2669         l4kwqe1->flags =
2670                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
2671                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
2672         l4kwqe1->cid = csk->cid;
2673         l4kwqe1->pg_cid = csk->pg_cid;
2674         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
2675         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
2676         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
2677         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
2678         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
2679                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
2680         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
2681                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
2682         if (csk->tcp_flags & SK_TCP_NAGLE)
2683                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
2684         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
2685                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
2686         if (csk->tcp_flags & SK_TCP_SACK)
2687                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
2688         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
2689                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
2690
2691         l4kwqe1->tcp_flags = tcp_flags;
2692
2693         return dev->submit_kwqes(dev, wqes, num_wqes);
2694 }
2695
2696 static int cnic_cm_close_req(struct cnic_sock *csk)
2697 {
2698         struct cnic_dev *dev = csk->dev;
2699         struct l4_kwq_close_req *l4kwqe;
2700         struct kwqe *wqes[1];
2701
2702         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
2703         memset(l4kwqe, 0, sizeof(*l4kwqe));
2704         wqes[0] = (struct kwqe *) l4kwqe;
2705
2706         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
2707         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
2708         l4kwqe->cid = csk->cid;
2709
2710         return dev->submit_kwqes(dev, wqes, 1);
2711 }
2712
2713 static int cnic_cm_abort_req(struct cnic_sock *csk)
2714 {
2715         struct cnic_dev *dev = csk->dev;
2716         struct l4_kwq_reset_req *l4kwqe;
2717         struct kwqe *wqes[1];
2718
2719         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
2720         memset(l4kwqe, 0, sizeof(*l4kwqe));
2721         wqes[0] = (struct kwqe *) l4kwqe;
2722
2723         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
2724         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
2725         l4kwqe->cid = csk->cid;
2726
2727         return dev->submit_kwqes(dev, wqes, 1);
2728 }
2729
2730 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
2731                           u32 l5_cid, struct cnic_sock **csk, void *context)
2732 {
2733         struct cnic_local *cp = dev->cnic_priv;
2734         struct cnic_sock *csk1;
2735
2736         if (l5_cid >= MAX_CM_SK_TBL_SZ)
2737                 return -EINVAL;
2738
2739         csk1 = &cp->csk_tbl[l5_cid];
2740         if (atomic_read(&csk1->ref_count))
2741                 return -EAGAIN;
2742
2743         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
2744                 return -EBUSY;
2745
2746         csk1->dev = dev;
2747         csk1->cid = cid;
2748         csk1->l5_cid = l5_cid;
2749         csk1->ulp_type = ulp_type;
2750         csk1->context = context;
2751
2752         csk1->ka_timeout = DEF_KA_TIMEOUT;
2753         csk1->ka_interval = DEF_KA_INTERVAL;
2754         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
2755         csk1->tos = DEF_TOS;
2756         csk1->ttl = DEF_TTL;
2757         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
2758         csk1->rcv_buf = DEF_RCV_BUF;
2759         csk1->snd_buf = DEF_SND_BUF;
2760         csk1->seed = DEF_SEED;
2761
2762         *csk = csk1;
2763         return 0;
2764 }
2765
2766 static void cnic_cm_cleanup(struct cnic_sock *csk)
2767 {
2768         if (csk->src_port) {
2769                 struct cnic_dev *dev = csk->dev;
2770                 struct cnic_local *cp = dev->cnic_priv;
2771
2772                 cnic_free_id(&cp->csk_port_tbl, csk->src_port);
2773                 csk->src_port = 0;
2774         }
2775 }
2776
2777 static void cnic_close_conn(struct cnic_sock *csk)
2778 {
2779         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
2780                 cnic_cm_upload_pg(csk);
2781                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
2782         }
2783         cnic_cm_cleanup(csk);
2784 }
2785
2786 static int cnic_cm_destroy(struct cnic_sock *csk)
2787 {
2788         if (!cnic_in_use(csk))
2789                 return -EINVAL;
2790
2791         csk_hold(csk);
2792         clear_bit(SK_F_INUSE, &csk->flags);
2793         smp_mb__after_clear_bit();
2794         while (atomic_read(&csk->ref_count) != 1)
2795                 msleep(1);
2796         cnic_cm_cleanup(csk);
2797
2798         csk->flags = 0;
2799         csk_put(csk);
2800         return 0;
2801 }
2802
2803 static inline u16 cnic_get_vlan(struct net_device *dev,
2804                                 struct net_device **vlan_dev)
2805 {
2806         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2807                 *vlan_dev = vlan_dev_real_dev(dev);
2808                 return vlan_dev_vlan_id(dev);
2809         }
2810         *vlan_dev = dev;
2811         return 0;
2812 }
2813
2814 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
2815                              struct dst_entry **dst)
2816 {
2817 #if defined(CONFIG_INET)
2818         struct flowi fl;
2819         int err;
2820         struct rtable *rt;
2821
2822         memset(&fl, 0, sizeof(fl));
2823         fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
2824
2825         err = ip_route_output_key(&init_net, &rt, &fl);
2826         if (!err)
2827                 *dst = &rt->dst;
2828         return err;
2829 #else
2830         return -ENETUNREACH;
2831 #endif
2832 }
2833
2834 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
2835                              struct dst_entry **dst)
2836 {
2837 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2838         struct flowi fl;
2839
2840         memset(&fl, 0, sizeof(fl));
2841         ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
2842         if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
2843                 fl.oif = dst_addr->sin6_scope_id;
2844
2845         *dst = ip6_route_output(&init_net, NULL, &fl);
2846         if (*dst)
2847                 return 0;
2848 #endif
2849
2850         return -ENETUNREACH;
2851 }
2852
2853 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
2854                                            int ulp_type)
2855 {
2856         struct cnic_dev *dev = NULL;
2857         struct dst_entry *dst;
2858         struct net_device *netdev = NULL;
2859         int err = -ENETUNREACH;
2860
2861         if (dst_addr->sin_family == AF_INET)
2862                 err = cnic_get_v4_route(dst_addr, &dst);
2863         else if (dst_addr->sin_family == AF_INET6) {
2864                 struct sockaddr_in6 *dst_addr6 =
2865                         (struct sockaddr_in6 *) dst_addr;
2866
2867                 err = cnic_get_v6_route(dst_addr6, &dst);
2868         } else
2869                 return NULL;
2870
2871         if (err)
2872                 return NULL;
2873
2874         if (!dst->dev)
2875                 goto done;
2876
2877         cnic_get_vlan(dst->dev, &netdev);
2878
2879         dev = cnic_from_netdev(netdev);
2880
2881 done:
2882         dst_release(dst);
2883         if (dev)
2884                 cnic_put(dev);
2885         return dev;
2886 }
2887
2888 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2889 {
2890         struct cnic_dev *dev = csk->dev;
2891         struct cnic_local *cp = dev->cnic_priv;
2892
2893         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
2894 }
2895
2896 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2897 {
2898         struct cnic_dev *dev = csk->dev;
2899         struct cnic_local *cp = dev->cnic_priv;
2900         int is_v6, rc = 0;
2901         struct dst_entry *dst = NULL;
2902         struct net_device *realdev;
2903         u32 local_port;
2904
2905         if (saddr->local.v6.sin6_family == AF_INET6 &&
2906             saddr->remote.v6.sin6_family == AF_INET6)
2907                 is_v6 = 1;
2908         else if (saddr->local.v4.sin_family == AF_INET &&
2909                  saddr->remote.v4.sin_family == AF_INET)
2910                 is_v6 = 0;
2911         else
2912                 return -EINVAL;
2913
2914         clear_bit(SK_F_IPV6, &csk->flags);
2915
2916         if (is_v6) {
2917                 set_bit(SK_F_IPV6, &csk->flags);
2918                 cnic_get_v6_route(&saddr->remote.v6, &dst);
2919
2920                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
2921                        sizeof(struct in6_addr));
2922                 csk->dst_port = saddr->remote.v6.sin6_port;
2923                 local_port = saddr->local.v6.sin6_port;
2924
2925         } else {
2926                 cnic_get_v4_route(&saddr->remote.v4, &dst);
2927
2928                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
2929                 csk->dst_port = saddr->remote.v4.sin_port;
2930                 local_port = saddr->local.v4.sin_port;
2931         }
2932
2933         csk->vlan_id = 0;
2934         csk->mtu = dev->netdev->mtu;
2935         if (dst && dst->dev) {
2936                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
2937                 if (realdev == dev->netdev) {
2938                         csk->vlan_id = vlan;
2939                         csk->mtu = dst_mtu(dst);
2940                 }
2941         }
2942
2943         if (local_port >= CNIC_LOCAL_PORT_MIN &&
2944             local_port < CNIC_LOCAL_PORT_MAX) {
2945                 if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
2946                         local_port = 0;
2947         } else
2948                 local_port = 0;
2949
2950         if (!local_port) {
2951                 local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
2952                 if (local_port == -1) {
2953                         rc = -ENOMEM;
2954                         goto err_out;
2955                 }
2956         }
2957         csk->src_port = local_port;
2958
2959 err_out:
2960         dst_release(dst);
2961         return rc;
2962 }
2963
2964 static void cnic_init_csk_state(struct cnic_sock *csk)
2965 {
2966         csk->state = 0;
2967         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
2968         clear_bit(SK_F_CLOSING, &csk->flags);
2969 }
2970
2971 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
2972 {
2973         int err = 0;
2974
2975         if (!cnic_in_use(csk))
2976                 return -EINVAL;
2977
2978         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
2979                 return -EINVAL;
2980
2981         cnic_init_csk_state(csk);
2982
2983         err = cnic_get_route(csk, saddr);
2984         if (err)
2985                 goto err_out;
2986
2987         err = cnic_resolve_addr(csk, saddr);
2988         if (!err)
2989                 return 0;
2990
2991 err_out:
2992         clear_bit(SK_F_CONNECT_START, &csk->flags);
2993         return err;
2994 }
2995
2996 static int cnic_cm_abort(struct cnic_sock *csk)
2997 {
2998         struct cnic_local *cp = csk->dev->cnic_priv;
2999         u32 opcode;
3000
3001         if (!cnic_in_use(csk))
3002                 return -EINVAL;
3003
3004         if (cnic_abort_prep(csk))
3005                 return cnic_cm_abort_req(csk);
3006
3007         /* Getting here means that we haven't started connect, or
3008          * connect was not successful.
3009          */
3010
3011         csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3012         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3013                 opcode = csk->state;
3014         else
3015                 opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3016         cp->close_conn(csk, opcode);
3017
3018         return 0;
3019 }
3020
3021 static int cnic_cm_close(struct cnic_sock *csk)
3022 {
3023         if (!cnic_in_use(csk))
3024                 return -EINVAL;
3025
3026         if (cnic_close_prep(csk)) {
3027                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3028                 return cnic_cm_close_req(csk);
3029         } else {
3030                 return -EALREADY;
3031         }
3032         return 0;
3033 }
3034
3035 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3036                            u8 opcode)
3037 {
3038         struct cnic_ulp_ops *ulp_ops;
3039         int ulp_type = csk->ulp_type;
3040
3041         rcu_read_lock();
3042         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3043         if (ulp_ops) {
3044                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3045                         ulp_ops->cm_connect_complete(csk);
3046                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3047                         ulp_ops->cm_close_complete(csk);
3048                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3049                         ulp_ops->cm_remote_abort(csk);
3050                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3051                         ulp_ops->cm_abort_complete(csk);
3052                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3053                         ulp_ops->cm_remote_close(csk);
3054         }
3055         rcu_read_unlock();
3056 }
3057
3058 static int cnic_cm_set_pg(struct cnic_sock *csk)
3059 {
3060         if (cnic_offld_prep(csk)) {
3061                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3062                         cnic_cm_update_pg(csk);
3063                 else
3064                         cnic_cm_offload_pg(csk);
3065         }
3066         return 0;
3067 }
3068
3069 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3070 {
3071         struct cnic_local *cp = dev->cnic_priv;
3072         u32 l5_cid = kcqe->pg_host_opaque;
3073         u8 opcode = kcqe->op_code;
3074         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3075
3076         csk_hold(csk);
3077         if (!cnic_in_use(csk))
3078                 goto done;
3079
3080         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3081                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3082                 goto done;
3083         }
3084         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3085         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3086                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3087                 cnic_cm_upcall(cp, csk,
3088                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3089                 goto done;
3090         }
3091
3092         csk->pg_cid = kcqe->pg_cid;
3093         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3094         cnic_cm_conn_req(csk);
3095
3096 done:
3097         csk_put(csk);
3098 }
3099
3100 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3101 {
3102         struct cnic_local *cp = dev->cnic_priv;
3103         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3104         u8 opcode = l4kcqe->op_code;
3105         u32 l5_cid;
3106         struct cnic_sock *csk;
3107
3108         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3109             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3110                 cnic_cm_process_offld_pg(dev, l4kcqe);
3111                 return;
3112         }
3113
3114         l5_cid = l4kcqe->conn_id;
3115         if (opcode & 0x80)
3116                 l5_cid = l4kcqe->cid;
3117         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3118                 return;
3119
3120         csk = &cp->csk_tbl[l5_cid];
3121         csk_hold(csk);
3122
3123         if (!cnic_in_use(csk)) {
3124                 csk_put(csk);
3125                 return;
3126         }
3127
3128         switch (opcode) {
3129         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3130                 if (l4kcqe->status != 0) {
3131                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3132                         cnic_cm_upcall(cp, csk,
3133                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3134                 }
3135                 break;
3136         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3137                 if (l4kcqe->status == 0)
3138                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3139
3140                 smp_mb__before_clear_bit();
3141                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3142                 cnic_cm_upcall(cp, csk, opcode);
3143                 break;
3144
3145         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3146                 if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
3147                         cnic_cm_upcall(cp, csk, opcode);
3148                         break;
3149                 } else if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags))
3150                         csk->state = opcode;
3151                 /* fall through */
3152         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3153         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3154         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3155         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3156                 cp->close_conn(csk, opcode);
3157                 break;
3158
3159         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3160                 cnic_cm_upcall(cp, csk, opcode);
3161                 break;
3162         }
3163         csk_put(csk);
3164 }
3165
3166 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3167 {
3168         struct cnic_dev *dev = data;
3169         int i;
3170
3171         for (i = 0; i < num; i++)
3172                 cnic_cm_process_kcqe(dev, kcqe[i]);
3173 }
3174
3175 static struct cnic_ulp_ops cm_ulp_ops = {
3176         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3177 };
3178
3179 static void cnic_cm_free_mem(struct cnic_dev *dev)
3180 {
3181         struct cnic_local *cp = dev->cnic_priv;
3182
3183         kfree(cp->csk_tbl);
3184         cp->csk_tbl = NULL;
3185         cnic_free_id_tbl(&cp->csk_port_tbl);
3186 }
3187
3188 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3189 {
3190         struct cnic_local *cp = dev->cnic_priv;
3191
3192         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3193                               GFP_KERNEL);
3194         if (!cp->csk_tbl)
3195                 return -ENOMEM;
3196
3197         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3198                              CNIC_LOCAL_PORT_MIN)) {
3199                 cnic_cm_free_mem(dev);
3200                 return -ENOMEM;
3201         }
3202         return 0;
3203 }
3204
3205 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3206 {
3207         if ((opcode == csk->state) ||
3208             (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED &&
3209              csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) {
3210                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags))
3211                         return 1;
3212         }
3213         /* 57710+ only  workaround to handle unsolicited RESET_COMP
3214          * which will be treated like a RESET RCVD notification
3215          * which triggers the clean up procedure
3216          */
3217         else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
3218                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
3219                         csk->state = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
3220                         return 1;
3221                 }
3222         }
3223         return 0;
3224 }
3225
3226 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3227 {
3228         struct cnic_dev *dev = csk->dev;
3229         struct cnic_local *cp = dev->cnic_priv;
3230
3231         clear_bit(SK_F_CONNECT_START, &csk->flags);
3232         cnic_close_conn(csk);
3233         cnic_cm_upcall(cp, csk, opcode);
3234 }
3235
3236 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3237 {
3238 }
3239
3240 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3241 {
3242         u32 seed;
3243
3244         get_random_bytes(&seed, 4);
3245         cnic_ctx_wr(dev, 45, 0, seed);
3246         return 0;
3247 }
3248
3249 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3250 {
3251         struct cnic_dev *dev = csk->dev;
3252         struct cnic_local *cp = dev->cnic_priv;
3253         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3254         union l5cm_specific_data l5_data;
3255         u32 cmd = 0;
3256         int close_complete = 0;
3257
3258         switch (opcode) {
3259         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3260         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3261         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3262                 if (cnic_ready_to_close(csk, opcode))
3263                         cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3264                 break;
3265         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3266                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3267                 break;
3268         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3269                 close_complete = 1;
3270                 break;
3271         }
3272         if (cmd) {
3273                 memset(&l5_data, 0, sizeof(l5_data));
3274
3275                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3276                                     &l5_data);
3277         } else if (close_complete) {
3278                 ctx->timestamp = jiffies;
3279                 cnic_close_conn(csk);
3280                 cnic_cm_upcall(cp, csk, csk->state);
3281         }
3282 }
3283
3284 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3285 {
3286 }
3287
3288 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3289 {
3290         struct cnic_local *cp = dev->cnic_priv;
3291         int func = CNIC_FUNC(cp);
3292
3293         cnic_init_bnx2x_mac(dev);
3294         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3295
3296         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3297                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(func), 0);
3298
3299         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3300                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(func), 1);
3301         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3302                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(func),
3303                 DEF_MAX_DA_COUNT);
3304
3305         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3306                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(func), DEF_TTL);
3307         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3308                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(func), DEF_TOS);
3309         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3310                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(func), 2);
3311         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3312                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(func), DEF_SWS_TIMER);
3313
3314         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(func),
3315                 DEF_MAX_CWND);
3316         return 0;
3317 }
3318
3319 static int cnic_cm_open(struct cnic_dev *dev)
3320 {
3321         struct cnic_local *cp = dev->cnic_priv;
3322         int err;
3323
3324         err = cnic_cm_alloc_mem(dev);
3325         if (err)
3326                 return err;
3327
3328         err = cp->start_cm(dev);
3329
3330         if (err)
3331                 goto err_out;
3332
3333         dev->cm_create = cnic_cm_create;
3334         dev->cm_destroy = cnic_cm_destroy;
3335         dev->cm_connect = cnic_cm_connect;
3336         dev->cm_abort = cnic_cm_abort;
3337         dev->cm_close = cnic_cm_close;
3338         dev->cm_select_dev = cnic_cm_select_dev;
3339
3340         cp->ulp_handle[CNIC_ULP_L4] = dev;
3341         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
3342         return 0;
3343
3344 err_out:
3345         cnic_cm_free_mem(dev);
3346         return err;
3347 }
3348
3349 static int cnic_cm_shutdown(struct cnic_dev *dev)
3350 {
3351         struct cnic_local *cp = dev->cnic_priv;
3352         int i;
3353
3354         cp->stop_cm(dev);
3355
3356         if (!cp->csk_tbl)
3357                 return 0;
3358
3359         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
3360                 struct cnic_sock *csk = &cp->csk_tbl[i];
3361
3362                 clear_bit(SK_F_INUSE, &csk->flags);
3363                 cnic_cm_cleanup(csk);
3364         }
3365         cnic_cm_free_mem(dev);
3366
3367         return 0;
3368 }
3369
3370 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
3371 {
3372         u32 cid_addr;
3373         int i;
3374
3375         cid_addr = GET_CID_ADDR(cid);
3376
3377         for (i = 0; i < CTX_SIZE; i += 4)
3378                 cnic_ctx_wr(dev, cid_addr, i, 0);
3379 }
3380
3381 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
3382 {
3383         struct cnic_local *cp = dev->cnic_priv;
3384         int ret = 0, i;
3385         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
3386
3387         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3388                 return 0;
3389
3390         for (i = 0; i < cp->ctx_blks; i++) {
3391                 int j;
3392                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
3393                 u32 val;
3394
3395                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
3396
3397                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
3398                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
3399                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
3400                         (u64) cp->ctx_arr[i].mapping >> 32);
3401                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
3402                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
3403                 for (j = 0; j < 10; j++) {
3404
3405                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
3406                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
3407                                 break;
3408                         udelay(5);
3409                 }
3410                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
3411                         ret = -EBUSY;
3412                         break;
3413                 }
3414         }
3415         return ret;
3416 }
3417
3418 static void cnic_free_irq(struct cnic_dev *dev)
3419 {
3420         struct cnic_local *cp = dev->cnic_priv;
3421         struct cnic_eth_dev *ethdev = cp->ethdev;
3422
3423         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3424                 cp->disable_int_sync(dev);
3425                 tasklet_disable(&cp->cnic_irq_task);
3426                 free_irq(ethdev->irq_arr[0].vector, dev);
3427         }
3428 }
3429
3430 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
3431 {
3432         struct cnic_local *cp = dev->cnic_priv;
3433         struct cnic_eth_dev *ethdev = cp->ethdev;
3434
3435         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3436                 int err, i = 0;
3437                 int sblk_num = cp->status_blk_num;
3438                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
3439                            BNX2_HC_SB_CONFIG_1;
3440
3441                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
3442
3443                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
3444                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
3445                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
3446
3447                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
3448                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
3449                              (unsigned long) dev);
3450                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3451                                   "cnic", dev);
3452                 if (err) {
3453                         tasklet_disable(&cp->cnic_irq_task);
3454                         return err;
3455                 }
3456                 while (cp->status_blk.bnx2->status_completion_producer_index &&
3457                        i < 10) {
3458                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
3459                                 1 << (11 + sblk_num));
3460                         udelay(10);
3461                         i++;
3462                         barrier();
3463                 }
3464                 if (cp->status_blk.bnx2->status_completion_producer_index) {
3465                         cnic_free_irq(dev);
3466                         goto failed;
3467                 }
3468
3469         } else {
3470                 struct status_block *sblk = cp->status_blk.gen;
3471                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
3472                 int i = 0;
3473
3474                 while (sblk->status_completion_producer_index && i < 10) {
3475                         CNIC_WR(dev, BNX2_HC_COMMAND,
3476                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
3477                         udelay(10);
3478                         i++;
3479                         barrier();
3480                 }
3481                 if (sblk->status_completion_producer_index)
3482                         goto failed;
3483
3484         }
3485         return 0;
3486
3487 failed:
3488         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
3489         return -EBUSY;
3490 }
3491
3492 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
3493 {
3494         struct cnic_local *cp = dev->cnic_priv;
3495         struct cnic_eth_dev *ethdev = cp->ethdev;
3496
3497         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3498                 return;
3499
3500         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3501                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3502 }
3503
3504 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
3505 {
3506         struct cnic_local *cp = dev->cnic_priv;
3507         struct cnic_eth_dev *ethdev = cp->ethdev;
3508
3509         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3510                 return;
3511
3512         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3513                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
3514         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
3515         synchronize_irq(ethdev->irq_arr[0].vector);
3516 }
3517
3518 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
3519 {
3520         struct cnic_local *cp = dev->cnic_priv;
3521         struct cnic_eth_dev *ethdev = cp->ethdev;
3522         u32 cid_addr, tx_cid, sb_id;
3523         u32 val, offset0, offset1, offset2, offset3;
3524         int i;
3525         struct tx_bd *txbd;
3526         dma_addr_t buf_map;
3527         struct status_block *s_blk = cp->status_blk.gen;
3528
3529         sb_id = cp->status_blk_num;
3530         tx_cid = 20;
3531         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
3532         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3533                 struct status_block_msix *sblk = cp->status_blk.bnx2;
3534
3535                 tx_cid = TX_TSS_CID + sb_id - 1;
3536                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
3537                         (TX_TSS_CID << 7));
3538                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
3539         }
3540         cp->tx_cons = *cp->tx_cons_ptr;
3541
3542         cid_addr = GET_CID_ADDR(tx_cid);
3543         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
3544                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
3545
3546                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
3547                         cnic_ctx_wr(dev, cid_addr2, i, 0);
3548
3549                 offset0 = BNX2_L2CTX_TYPE_XI;
3550                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
3551                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
3552                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
3553         } else {
3554                 cnic_init_context(dev, tx_cid);
3555                 cnic_init_context(dev, tx_cid + 1);
3556
3557                 offset0 = BNX2_L2CTX_TYPE;
3558                 offset1 = BNX2_L2CTX_CMD_TYPE;
3559                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
3560                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
3561         }
3562         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
3563         cnic_ctx_wr(dev, cid_addr, offset0, val);
3564
3565         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
3566         cnic_ctx_wr(dev, cid_addr, offset1, val);
3567
3568         txbd = (struct tx_bd *) cp->l2_ring;
3569
3570         buf_map = cp->l2_buf_map;
3571         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
3572                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
3573                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3574         }
3575         val = (u64) cp->l2_ring_map >> 32;
3576         cnic_ctx_wr(dev, cid_addr, offset2, val);
3577         txbd->tx_bd_haddr_hi = val;
3578
3579         val = (u64) cp->l2_ring_map & 0xffffffff;
3580         cnic_ctx_wr(dev, cid_addr, offset3, val);
3581         txbd->tx_bd_haddr_lo = val;
3582 }
3583
3584 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
3585 {
3586         struct cnic_local *cp = dev->cnic_priv;
3587         struct cnic_eth_dev *ethdev = cp->ethdev;
3588         u32 cid_addr, sb_id, val, coal_reg, coal_val;
3589         int i;
3590         struct rx_bd *rxbd;
3591         struct status_block *s_blk = cp->status_blk.gen;
3592
3593         sb_id = cp->status_blk_num;
3594         cnic_init_context(dev, 2);
3595         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
3596         coal_reg = BNX2_HC_COMMAND;
3597         coal_val = CNIC_RD(dev, coal_reg);
3598         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3599                 struct status_block_msix *sblk = cp->status_blk.bnx2;
3600
3601                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
3602                 coal_reg = BNX2_HC_COALESCE_NOW;
3603                 coal_val = 1 << (11 + sb_id);
3604         }
3605         i = 0;
3606         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
3607                 CNIC_WR(dev, coal_reg, coal_val);
3608                 udelay(10);
3609                 i++;
3610                 barrier();
3611         }
3612         cp->rx_cons = *cp->rx_cons_ptr;
3613
3614         cid_addr = GET_CID_ADDR(2);
3615         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
3616               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
3617         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
3618
3619         if (sb_id == 0)
3620                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
3621         else
3622                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
3623         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
3624
3625         rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE);
3626         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
3627                 dma_addr_t buf_map;
3628                 int n = (i % cp->l2_rx_ring_size) + 1;
3629
3630                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3631                 rxbd->rx_bd_len = cp->l2_single_buf_size;
3632                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
3633                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
3634                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
3635         }
3636         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3637         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
3638         rxbd->rx_bd_haddr_hi = val;
3639
3640         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3641         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
3642         rxbd->rx_bd_haddr_lo = val;
3643
3644         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
3645         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
3646 }
3647
3648 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
3649 {
3650         struct kwqe *wqes[1], l2kwqe;
3651
3652         memset(&l2kwqe, 0, sizeof(l2kwqe));
3653         wqes[0] = &l2kwqe;
3654         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) |
3655                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
3656                                KWQE_OPCODE_SHIFT) | 2;
3657         dev->submit_kwqes(dev, wqes, 1);
3658 }
3659
3660 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
3661 {
3662         struct cnic_local *cp = dev->cnic_priv;
3663         u32 val;
3664
3665         val = cp->func << 2;
3666
3667         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
3668
3669         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3670                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
3671         dev->mac_addr[0] = (u8) (val >> 8);
3672         dev->mac_addr[1] = (u8) val;
3673
3674         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
3675
3676         val = cnic_reg_rd_ind(dev, cp->shmem_base +
3677                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
3678         dev->mac_addr[2] = (u8) (val >> 24);
3679         dev->mac_addr[3] = (u8) (val >> 16);
3680         dev->mac_addr[4] = (u8) (val >> 8);
3681         dev->mac_addr[5] = (u8) val;
3682
3683         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
3684
3685         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
3686         if (CHIP_NUM(cp) != CHIP_NUM_5709)
3687                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
3688
3689         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
3690         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
3691         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
3692 }
3693
3694 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
3695 {
3696         struct cnic_local *cp = dev->cnic_priv;
3697         struct cnic_eth_dev *ethdev = cp->ethdev;
3698         struct status_block *sblk = cp->status_blk.gen;
3699         u32 val;
3700         int err;
3701
3702         cnic_set_bnx2_mac(dev);
3703
3704         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
3705         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
3706         if (BCM_PAGE_BITS > 12)
3707                 val |= (12 - 8)  << 4;
3708         else
3709                 val |= (BCM_PAGE_BITS - 8)  << 4;
3710
3711         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
3712
3713         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
3714         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
3715         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
3716
3717         err = cnic_setup_5709_context(dev, 1);
3718         if (err)
3719                 return err;
3720
3721         cnic_init_context(dev, KWQ_CID);
3722         cnic_init_context(dev, KCQ_CID);
3723
3724         cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
3725         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
3726
3727         cp->max_kwq_idx = MAX_KWQ_IDX;
3728         cp->kwq_prod_idx = 0;
3729         cp->kwq_con_idx = 0;
3730         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
3731
3732         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
3733                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
3734         else
3735                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
3736
3737         /* Initialize the kernel work queue context. */
3738         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3739               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3740         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val);
3741
3742         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
3743         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3744
3745         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
3746         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3747
3748         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
3749         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3750
3751         val = (u32) cp->kwq_info.pgtbl_map;
3752         cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3753
3754         cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
3755         cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
3756
3757         cp->kcq_prod_idx = 0;
3758
3759         /* Initialize the kernel complete queue context. */
3760         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
3761               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3762         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val);
3763
3764         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
3765         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3766
3767         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
3768         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3769
3770         val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32);
3771         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3772
3773         val = (u32) cp->kcq_info.pgtbl_map;
3774         cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3775
3776         cp->int_num = 0;
3777         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3778                 u32 sb_id = cp->status_blk_num;
3779                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
3780
3781                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
3782                 cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3783                 cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3784         }
3785
3786         /* Enable Commnad Scheduler notification when we write to the
3787          * host producer index of the kernel contexts. */
3788         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
3789
3790         /* Enable Command Scheduler notification when we write to either
3791          * the Send Queue or Receive Queue producer indexes of the kernel
3792          * bypass contexts. */
3793         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
3794         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
3795
3796         /* Notify COM when the driver post an application buffer. */
3797         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
3798
3799         /* Set the CP and COM doorbells.  These two processors polls the
3800          * doorbell for a non zero value before running.  This must be done
3801          * after setting up the kernel queue contexts. */
3802         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
3803         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
3804
3805         cnic_init_bnx2_tx_ring(dev);
3806         cnic_init_bnx2_rx_ring(dev);
3807
3808         err = cnic_init_bnx2_irq(dev);
3809         if (err) {
3810                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
3811                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
3812                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
3813                 return err;
3814         }
3815
3816         return 0;
3817 }
3818
3819 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
3820 {
3821         struct cnic_local *cp = dev->cnic_priv;
3822         struct cnic_eth_dev *ethdev = cp->ethdev;
3823         u32 start_offset = ethdev->ctx_tbl_offset;
3824         int i;
3825
3826         for (i = 0; i < cp->ctx_blks; i++) {
3827                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
3828                 dma_addr_t map = ctx->mapping;
3829
3830                 if (cp->ctx_align) {
3831                         unsigned long mask = cp->ctx_align - 1;
3832
3833                         map = (map + mask) & ~mask;
3834                 }
3835
3836                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
3837         }
3838 }
3839
3840 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
3841 {
3842         struct cnic_local *cp = dev->cnic_priv;
3843         struct cnic_eth_dev *ethdev = cp->ethdev;
3844         int err = 0;
3845
3846         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
3847                      (unsigned long) dev);
3848         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3849                 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
3850                                   "cnic", dev);
3851                 if (err)
3852                         tasklet_disable(&cp->cnic_irq_task);
3853         }
3854         return err;
3855 }
3856
3857 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
3858 {
3859         struct cnic_local *cp = dev->cnic_priv;
3860         u8 sb_id = cp->status_blk_num;
3861         int port = CNIC_PORT(cp);
3862
3863         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
3864                  CSTORM_SB_HC_TIMEOUT_C_OFFSET(port, sb_id,
3865                                                HC_INDEX_C_ISCSI_EQ_CONS),
3866                  64 / 12);
3867         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
3868                   CSTORM_SB_HC_DISABLE_C_OFFSET(port, sb_id,
3869                                                 HC_INDEX_C_ISCSI_EQ_CONS), 0);
3870 }
3871
3872 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
3873 {
3874 }
3875
3876 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev)
3877 {
3878         struct cnic_local *cp = dev->cnic_priv;
3879         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) cp->l2_ring;
3880         struct eth_context *context;
3881         struct regpair context_addr;
3882         dma_addr_t buf_map;
3883         int func = CNIC_FUNC(cp);
3884         int port = CNIC_PORT(cp);
3885         int i;
3886         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3887         u32 val;
3888
3889         memset(txbd, 0, BCM_PAGE_SIZE);
3890
3891         buf_map = cp->l2_buf_map;
3892         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
3893                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
3894                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
3895
3896                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3897                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3898                 reg_bd->addr_hi = start_bd->addr_hi;
3899                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
3900                 start_bd->nbytes = cpu_to_le16(0x10);
3901                 start_bd->nbd = cpu_to_le16(3);
3902                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
3903                 start_bd->general_data = (UNICAST_ADDRESS <<
3904                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
3905                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
3906
3907         }
3908         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 1, &context_addr);
3909
3910         val = (u64) cp->l2_ring_map >> 32;
3911         txbd->next_bd.addr_hi = cpu_to_le32(val);
3912
3913         context->xstorm_st_context.tx_bd_page_base_hi = val;
3914
3915         val = (u64) cp->l2_ring_map & 0xffffffff;
3916         txbd->next_bd.addr_lo = cpu_to_le32(val);
3917
3918         context->xstorm_st_context.tx_bd_page_base_lo = val;
3919
3920         context->cstorm_st_context.sb_index_number =
3921                 HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS;
3922         context->cstorm_st_context.status_block_id = BNX2X_DEF_SB_ID;
3923
3924         context->xstorm_st_context.statistics_data = (cli |
3925                                 XSTORM_ETH_ST_CONTEXT_STATISTICS_ENABLE);
3926
3927         context->xstorm_ag_context.cdu_reserved =
3928                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3929                                         CDU_REGION_NUMBER_XCM_AG,
3930                                         ETH_CONNECTION_TYPE);
3931
3932         /* reset xstorm per client statistics */
3933         val = BAR_XSTRORM_INTMEM +
3934               XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
3935         for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
3936                 CNIC_WR(dev, val + i * 4, 0);
3937
3938         cp->tx_cons_ptr =
3939                 &cp->bnx2x_def_status_blk->c_def_status_block.index_values[
3940                         HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS];
3941 }
3942
3943 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev)
3944 {
3945         struct cnic_local *cp = dev->cnic_priv;
3946         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (cp->l2_ring +
3947                                 BCM_PAGE_SIZE);
3948         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
3949                                 (cp->l2_ring + (2 * BCM_PAGE_SIZE));
3950         struct eth_context *context;
3951         struct regpair context_addr;
3952         int i;
3953         int port = CNIC_PORT(cp);
3954         int func = CNIC_FUNC(cp);
3955         int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
3956         u32 val;
3957         struct tstorm_eth_client_config tstorm_client = {0};
3958
3959         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
3960                 dma_addr_t buf_map;
3961                 int n = (i % cp->l2_rx_ring_size) + 1;
3962
3963                 buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
3964                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
3965                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
3966         }
3967         context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 0, &context_addr);
3968
3969         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
3970         rxbd->addr_hi = cpu_to_le32(val);
3971
3972         context->ustorm_st_context.common.bd_page_base_hi = val;
3973
3974         val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3975         rxbd->addr_lo = cpu_to_le32(val);
3976
3977         context->ustorm_st_context.common.bd_page_base_lo = val;
3978
3979         context->ustorm_st_context.common.sb_index_numbers =
3980                                                 BNX2X_ISCSI_RX_SB_INDEX_NUM;
3981         context->ustorm_st_context.common.clientId = cli;
3982         context->ustorm_st_context.common.status_block_id = BNX2X_DEF_SB_ID;
3983         context->ustorm_st_context.common.flags =
3984                 USTORM_ETH_ST_CONTEXT_CONFIG_ENABLE_STATISTICS;
3985         context->ustorm_st_context.common.statistics_counter_id = cli;
3986         context->ustorm_st_context.common.mc_alignment_log_size = 0;
3987         context->ustorm_st_context.common.bd_buff_size =
3988                                                 cp->l2_single_buf_size;
3989
3990         context->ustorm_ag_context.cdu_usage =
3991                 CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
3992                                         CDU_REGION_NUMBER_UCM_AG,
3993                                         ETH_CONNECTION_TYPE);
3994
3995         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
3996         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
3997         rxcqe->addr_hi = cpu_to_le32(val);
3998
3999         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4000                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli) + 4, val);
4001
4002         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4003                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli) + 4, val);
4004
4005         val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4006         rxcqe->addr_lo = cpu_to_le32(val);
4007
4008         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4009                 USTORM_CQE_PAGE_BASE_OFFSET(port, cli), val);
4010
4011         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4012                 USTORM_CQE_PAGE_NEXT_OFFSET(port, cli), val);
4013
4014         /* client tstorm info */
4015         tstorm_client.mtu = cp->l2_single_buf_size - 14;
4016         tstorm_client.config_flags =
4017                         (TSTORM_ETH_CLIENT_CONFIG_E1HOV_REM_ENABLE |
4018                         TSTORM_ETH_CLIENT_CONFIG_STATSITICS_ENABLE);
4019         tstorm_client.statistics_counter_id = cli;
4020
4021         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4022                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli),
4023                    ((u32 *)&tstorm_client)[0]);
4024         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4025                    TSTORM_CLIENT_CONFIG_OFFSET(port, cli) + 4,
4026                    ((u32 *)&tstorm_client)[1]);
4027
4028         /* reset tstorm per client statistics */
4029         val = BAR_TSTRORM_INTMEM +
4030               TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4031         for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
4032                 CNIC_WR(dev, val + i * 4, 0);
4033
4034         /* reset ustorm per client statistics */
4035         val = BAR_USTRORM_INTMEM +
4036               USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4037         for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
4038                 CNIC_WR(dev, val + i * 4, 0);
4039
4040         cp->rx_cons_ptr =
4041                 &cp->bnx2x_def_status_blk->u_def_status_block.index_values[
4042                         HC_INDEX_DEF_U_ETH_ISCSI_RX_CQ_CONS];
4043 }
4044
4045 static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
4046 {
4047         struct cnic_local *cp = dev->cnic_priv;
4048         u32 base, addr, val;
4049         int port = CNIC_PORT(cp);
4050
4051         dev->max_iscsi_conn = 0;
4052         base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
4053         if (base < 0xa0000 || base >= 0xc0000)
4054                 return;
4055
4056         addr = BNX2X_SHMEM_ADDR(base,
4057                 dev_info.port_hw_config[port].iscsi_mac_upper);
4058
4059         val = CNIC_RD(dev, addr);
4060
4061         dev->mac_addr[0] = (u8) (val >> 8);
4062         dev->mac_addr[1] = (u8) val;
4063
4064         addr = BNX2X_SHMEM_ADDR(base,
4065                 dev_info.port_hw_config[port].iscsi_mac_lower);
4066
4067         val = CNIC_RD(dev, addr);
4068
4069         dev->mac_addr[2] = (u8) (val >> 24);
4070         dev->mac_addr[3] = (u8) (val >> 16);
4071         dev->mac_addr[4] = (u8) (val >> 8);
4072         dev->mac_addr[5] = (u8) val;
4073
4074         addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
4075         val = CNIC_RD(dev, addr);
4076
4077         if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
4078                 u16 val16;
4079
4080                 addr = BNX2X_SHMEM_ADDR(base,
4081                                 drv_lic_key[port].max_iscsi_init_conn);
4082                 val16 = CNIC_RD16(dev, addr);
4083
4084                 if (val16)
4085                         val16 ^= 0x1e1e;
4086                 dev->max_iscsi_conn = val16;
4087         }
4088         if (BNX2X_CHIP_IS_E1H(cp->chip_id)) {
4089                 int func = CNIC_FUNC(cp);
4090
4091                 addr = BNX2X_SHMEM_ADDR(base,
4092                                 mf_cfg.func_mf_config[func].e1hov_tag);
4093                 val = CNIC_RD(dev, addr);
4094                 val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
4095                 if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
4096                         addr = BNX2X_SHMEM_ADDR(base,
4097                                 mf_cfg.func_mf_config[func].config);
4098                         val = CNIC_RD(dev, addr);
4099                         val &= FUNC_MF_CFG_PROTOCOL_MASK;
4100                         if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
4101                                 dev->max_iscsi_conn = 0;
4102                 }
4103         }
4104 }
4105
4106 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4107 {
4108         struct cnic_local *cp = dev->cnic_priv;
4109         int func = CNIC_FUNC(cp), ret, i;
4110         int port = CNIC_PORT(cp);
4111         u16 eq_idx;
4112         u8 sb_id = cp->status_blk_num;
4113
4114         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4115                                BNX2X_ISCSI_START_CID);
4116
4117         if (ret)
4118                 return -ENOMEM;
4119
4120         cp->kcq_io_addr = BAR_CSTRORM_INTMEM +
4121                           CSTORM_ISCSI_EQ_PROD_OFFSET(func, 0);
4122         cp->kcq_prod_idx = 0;
4123
4124         cnic_get_bnx2x_iscsi_info(dev);
4125
4126         /* Only 1 EQ */
4127         CNIC_WR16(dev, cp->kcq_io_addr, MAX_KCQ_IDX);
4128         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4129                 CSTORM_ISCSI_EQ_CONS_OFFSET(func, 0), 0);
4130         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4131                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0),
4132                 cp->kcq_info.pg_map_arr[1] & 0xffffffff);
4133         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4134                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0) + 4,
4135                 (u64) cp->kcq_info.pg_map_arr[1] >> 32);
4136         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4137                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0),
4138                 cp->kcq_info.pg_map_arr[0] & 0xffffffff);
4139         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4140                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0) + 4,
4141                 (u64) cp->kcq_info.pg_map_arr[0] >> 32);
4142         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4143                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(func, 0), 1);
4144         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4145                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(func, 0), cp->status_blk_num);
4146         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4147                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(func, 0),
4148                 HC_INDEX_C_ISCSI_EQ_CONS);
4149
4150         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4151                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4152                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i),
4153                         cp->conn_buf_info.pgtbl[2 * i]);
4154                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4155                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i) + 4,
4156                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4157         }
4158
4159         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4160                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func),
4161                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4162         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4163                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func) + 4,
4164                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4165
4166         cnic_setup_bnx2x_context(dev);
4167
4168         eq_idx = CNIC_RD16(dev, BAR_CSTRORM_INTMEM +
4169                            CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4170                            offsetof(struct cstorm_status_block_c,
4171                                     index_values[HC_INDEX_C_ISCSI_EQ_CONS]));
4172         if (eq_idx != 0) {
4173                 netdev_err(dev->netdev, "EQ cons index %x != 0\n", eq_idx);
4174                 return -EBUSY;
4175         }
4176         ret = cnic_init_bnx2x_irq(dev);
4177         if (ret)
4178                 return ret;
4179
4180         cnic_init_bnx2x_tx_ring(dev);
4181         cnic_init_bnx2x_rx_ring(dev);
4182
4183         return 0;
4184 }
4185
4186 static void cnic_init_rings(struct cnic_dev *dev)
4187 {
4188         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4189                 cnic_init_bnx2_tx_ring(dev);
4190                 cnic_init_bnx2_rx_ring(dev);
4191         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4192                 struct cnic_local *cp = dev->cnic_priv;
4193                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4194                 union l5cm_specific_data l5_data;
4195                 struct ustorm_eth_rx_producers rx_prods = {0};
4196                 u32 off, i;
4197
4198                 rx_prods.bd_prod = 0;
4199                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4200                 barrier();
4201
4202                 off = BAR_USTRORM_INTMEM +
4203                         USTORM_RX_PRODS_OFFSET(CNIC_PORT(cp), cli);
4204
4205                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4206                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4207
4208                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4209
4210                 cnic_init_bnx2x_tx_ring(dev);
4211                 cnic_init_bnx2x_rx_ring(dev);
4212
4213                 l5_data.phy_address.lo = cli;
4214                 l5_data.phy_address.hi = 0;
4215                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4216                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4217                 i = 0;
4218                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4219                        ++i < 10)
4220                         msleep(1);
4221
4222                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4223                         netdev_err(dev->netdev,
4224                                 "iSCSI CLIENT_SETUP did not complete\n");
4225                 cnic_kwq_completion(dev, 1);
4226                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
4227         }
4228 }
4229
4230 static void cnic_shutdown_rings(struct cnic_dev *dev)
4231 {
4232         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4233                 cnic_shutdown_bnx2_rx_ring(dev);
4234         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4235                 struct cnic_local *cp = dev->cnic_priv;
4236                 u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4237                 union l5cm_specific_data l5_data;
4238                 int i;
4239
4240                 cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0);
4241
4242                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4243
4244                 l5_data.phy_address.lo = cli;
4245                 l5_data.phy_address.hi = 0;
4246                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4247                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4248                 i = 0;
4249                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4250                        ++i < 10)
4251                         msleep(1);
4252
4253                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4254                         netdev_err(dev->netdev,
4255                                 "iSCSI CLIENT_HALT did not complete\n");
4256                 cnic_kwq_completion(dev, 1);
4257
4258                 memset(&l5_data, 0, sizeof(l5_data));
4259                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
4260                         BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE |
4261                         (1 << SPE_HDR_COMMON_RAMROD_SHIFT), &l5_data);
4262                 msleep(10);
4263         }
4264 }
4265
4266 static int cnic_register_netdev(struct cnic_dev *dev)
4267 {
4268         struct cnic_local *cp = dev->cnic_priv;
4269         struct cnic_eth_dev *ethdev = cp->ethdev;
4270         int err;
4271
4272         if (!ethdev)
4273                 return -ENODEV;
4274
4275         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
4276                 return 0;
4277
4278         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4279         if (err)
4280                 netdev_err(dev->netdev, "register_cnic failed\n");
4281
4282         return err;
4283 }
4284
4285 static void cnic_unregister_netdev(struct cnic_dev *dev)
4286 {
4287         struct cnic_local *cp = dev->cnic_priv;
4288         struct cnic_eth_dev *ethdev = cp->ethdev;
4289
4290         if (!ethdev)
4291                 return;
4292
4293         ethdev->drv_unregister_cnic(dev->netdev);
4294 }
4295
4296 static int cnic_start_hw(struct cnic_dev *dev)
4297 {
4298         struct cnic_local *cp = dev->cnic_priv;
4299         struct cnic_eth_dev *ethdev = cp->ethdev;
4300         int err;
4301
4302         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
4303                 return -EALREADY;
4304
4305         dev->regview = ethdev->io_base;
4306         cp->chip_id = ethdev->chip_id;
4307         pci_dev_get(dev->pcidev);
4308         cp->func = PCI_FUNC(dev->pcidev->devfn);
4309         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
4310         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
4311
4312         err = cp->alloc_resc(dev);
4313         if (err) {
4314                 netdev_err(dev->netdev, "allocate resource failure\n");
4315                 goto err1;
4316         }
4317
4318         err = cp->start_hw(dev);
4319         if (err)
4320                 goto err1;
4321
4322         err = cnic_cm_open(dev);
4323         if (err)
4324                 goto err1;
4325
4326         set_bit(CNIC_F_CNIC_UP, &dev->flags);
4327
4328         cp->enable_int(dev);
4329
4330         return 0;
4331
4332 err1:
4333         cp->free_resc(dev);
4334         pci_dev_put(dev->pcidev);
4335         return err;
4336 }
4337
4338 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
4339 {
4340         cnic_disable_bnx2_int_sync(dev);
4341
4342         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4343         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4344
4345         cnic_init_context(dev, KWQ_CID);
4346         cnic_init_context(dev, KCQ_CID);
4347
4348         cnic_setup_5709_context(dev, 0);
4349         cnic_free_irq(dev);
4350
4351         cnic_free_resc(dev);
4352 }
4353
4354
4355 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
4356 {
4357         struct cnic_local *cp = dev->cnic_priv;
4358         u8 sb_id = cp->status_blk_num;
4359         int port = CNIC_PORT(cp);
4360
4361         cnic_free_irq(dev);
4362         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4363                   CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
4364                   offsetof(struct cstorm_status_block_c,
4365                            index_values[HC_INDEX_C_ISCSI_EQ_CONS]),
4366                   0);
4367         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4368                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->func, 0), 0);
4369         CNIC_WR16(dev, cp->kcq_io_addr, 0);
4370         cnic_free_resc(dev);
4371 }
4372
4373 static void cnic_stop_hw(struct cnic_dev *dev)
4374 {
4375         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4376                 struct cnic_local *cp = dev->cnic_priv;
4377                 int i = 0;
4378
4379                 /* Need to wait for the ring shutdown event to complete
4380                  * before clearing the CNIC_UP flag.
4381                  */
4382                 while (cp->uio_dev != -1 && i < 15) {
4383                         msleep(100);
4384                         i++;
4385                 }
4386                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
4387                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
4388                 synchronize_rcu();
4389                 cnic_cm_shutdown(dev);
4390                 cp->stop_hw(dev);
4391                 pci_dev_put(dev->pcidev);
4392         }
4393 }
4394
4395 static void cnic_free_dev(struct cnic_dev *dev)
4396 {
4397         int i = 0;
4398
4399         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
4400                 msleep(100);
4401                 i++;
4402         }
4403         if (atomic_read(&dev->ref_count) != 0)
4404                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
4405
4406         netdev_info(dev->netdev, "Removed CNIC device\n");
4407         dev_put(dev->netdev);
4408         kfree(dev);
4409 }
4410
4411 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
4412                                        struct pci_dev *pdev)
4413 {
4414         struct cnic_dev *cdev;
4415         struct cnic_local *cp;
4416         int alloc_size;
4417
4418         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
4419
4420         cdev = kzalloc(alloc_size , GFP_KERNEL);
4421         if (cdev == NULL) {
4422                 netdev_err(dev, "allocate dev struct failure\n");
4423                 return NULL;
4424         }
4425
4426         cdev->netdev = dev;
4427         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
4428         cdev->register_device = cnic_register_device;
4429         cdev->unregister_device = cnic_unregister_device;
4430         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
4431
4432         cp = cdev->cnic_priv;
4433         cp->dev = cdev;
4434         cp->uio_dev = -1;
4435         cp->l2_single_buf_size = 0x400;
4436         cp->l2_rx_ring_size = 3;
4437
4438         spin_lock_init(&cp->cnic_ulp_lock);
4439
4440         netdev_info(dev, "Added CNIC device\n");
4441
4442         return cdev;
4443 }
4444
4445 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
4446 {
4447         struct pci_dev *pdev;
4448         struct cnic_dev *cdev;
4449         struct cnic_local *cp;
4450         struct cnic_eth_dev *ethdev = NULL;
4451         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4452
4453         probe = symbol_get(bnx2_cnic_probe);
4454         if (probe) {
4455                 ethdev = (*probe)(dev);
4456                 symbol_put(bnx2_cnic_probe);
4457         }
4458         if (!ethdev)
4459                 return NULL;
4460
4461         pdev = ethdev->pdev;
4462         if (!pdev)
4463                 return NULL;
4464
4465         dev_hold(dev);
4466         pci_dev_get(pdev);
4467         if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
4468             pdev->device == PCI_DEVICE_ID_NX2_5709S) {
4469                 u8 rev;
4470
4471                 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
4472                 if (rev < 0x10) {
4473                         pci_dev_put(pdev);
4474                         goto cnic_err;
4475                 }
4476         }
4477         pci_dev_put(pdev);
4478
4479         cdev = cnic_alloc_dev(dev, pdev);
4480         if (cdev == NULL)
4481                 goto cnic_err;
4482
4483         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
4484         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
4485
4486         cp = cdev->cnic_priv;
4487         cp->ethdev = ethdev;
4488         cdev->pcidev = pdev;
4489
4490         cp->cnic_ops = &cnic_bnx2_ops;
4491         cp->start_hw = cnic_start_bnx2_hw;
4492         cp->stop_hw = cnic_stop_bnx2_hw;
4493         cp->setup_pgtbl = cnic_setup_page_tbl;
4494         cp->alloc_resc = cnic_alloc_bnx2_resc;
4495         cp->free_resc = cnic_free_resc;
4496         cp->start_cm = cnic_cm_init_bnx2_hw;
4497         cp->stop_cm = cnic_cm_stop_bnx2_hw;
4498         cp->enable_int = cnic_enable_bnx2_int;
4499         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
4500         cp->close_conn = cnic_close_bnx2_conn;
4501         cp->next_idx = cnic_bnx2_next_idx;
4502         cp->hw_idx = cnic_bnx2_hw_idx;
4503         return cdev;
4504
4505 cnic_err:
4506         dev_put(dev);
4507         return NULL;
4508 }
4509
4510 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
4511 {
4512         struct pci_dev *pdev;
4513         struct cnic_dev *cdev;
4514         struct cnic_local *cp;
4515         struct cnic_eth_dev *ethdev = NULL;
4516         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4517
4518         probe = symbol_get(bnx2x_cnic_probe);
4519         if (probe) {
4520                 ethdev = (*probe)(dev);
4521                 symbol_put(bnx2x_cnic_probe);
4522         }
4523         if (!ethdev)
4524                 return NULL;
4525
4526         pdev = ethdev->pdev;
4527         if (!pdev)
4528                 return NULL;
4529
4530         dev_hold(dev);
4531         cdev = cnic_alloc_dev(dev, pdev);
4532         if (cdev == NULL) {
4533                 dev_put(dev);
4534                 return NULL;
4535         }
4536
4537         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
4538         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
4539
4540         cp = cdev->cnic_priv;
4541         cp->ethdev = ethdev;
4542         cdev->pcidev = pdev;
4543
4544         cp->cnic_ops = &cnic_bnx2x_ops;
4545         cp->start_hw = cnic_start_bnx2x_hw;
4546         cp->stop_hw = cnic_stop_bnx2x_hw;
4547         cp->setup_pgtbl = cnic_setup_page_tbl_le;
4548         cp->alloc_resc = cnic_alloc_bnx2x_resc;
4549         cp->free_resc = cnic_free_resc;
4550         cp->start_cm = cnic_cm_init_bnx2x_hw;
4551         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
4552         cp->enable_int = cnic_enable_bnx2x_int;
4553         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
4554         cp->ack_int = cnic_ack_bnx2x_msix;
4555         cp->close_conn = cnic_close_bnx2x_conn;
4556         cp->next_idx = cnic_bnx2x_next_idx;
4557         cp->hw_idx = cnic_bnx2x_hw_idx;
4558         return cdev;
4559 }
4560
4561 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
4562 {
4563         struct ethtool_drvinfo drvinfo;
4564         struct cnic_dev *cdev = NULL;
4565
4566         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
4567                 memset(&drvinfo, 0, sizeof(drvinfo));
4568                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
4569
4570                 if (!strcmp(drvinfo.driver, "bnx2"))
4571                         cdev = init_bnx2_cnic(dev);
4572                 if (!strcmp(drvinfo.driver, "bnx2x"))
4573                         cdev = init_bnx2x_cnic(dev);
4574                 if (cdev) {
4575                         write_lock(&cnic_dev_lock);
4576                         list_add(&cdev->list, &cnic_dev_list);
4577                         write_unlock(&cnic_dev_lock);
4578                 }
4579         }
4580         return cdev;
4581 }
4582
4583 /**
4584  * netdev event handler
4585  */
4586 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
4587                                                          void *ptr)
4588 {
4589         struct net_device *netdev = ptr;
4590         struct cnic_dev *dev;
4591         int if_type;
4592         int new_dev = 0;
4593
4594         dev = cnic_from_netdev(netdev);
4595
4596         if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
4597                 /* Check for the hot-plug device */
4598                 dev = is_cnic_dev(netdev);
4599                 if (dev) {
4600                         new_dev = 1;
4601                         cnic_hold(dev);
4602                 }
4603         }
4604         if (dev) {
4605                 struct cnic_local *cp = dev->cnic_priv;
4606
4607                 if (new_dev)
4608                         cnic_ulp_init(dev);
4609                 else if (event == NETDEV_UNREGISTER)
4610                         cnic_ulp_exit(dev);
4611
4612                 if (event == NETDEV_UP) {
4613                         if (cnic_register_netdev(dev) != 0) {
4614                                 cnic_put(dev);
4615                                 goto done;
4616                         }
4617                         if (!cnic_start_hw(dev))
4618                                 cnic_ulp_start(dev);
4619                 }
4620
4621                 rcu_read_lock();
4622                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
4623                         struct cnic_ulp_ops *ulp_ops;
4624                         void *ctx;
4625
4626                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
4627                         if (!ulp_ops || !ulp_ops->indicate_netevent)
4628                                 continue;
4629
4630                         ctx = cp->ulp_handle[if_type];
4631
4632                         ulp_ops->indicate_netevent(ctx, event);
4633                 }
4634                 rcu_read_unlock();
4635
4636                 if (event == NETDEV_GOING_DOWN) {
4637                         cnic_ulp_stop(dev);
4638                         cnic_stop_hw(dev);
4639                         cnic_unregister_netdev(dev);
4640                 } else if (event == NETDEV_UNREGISTER) {
4641                         write_lock(&cnic_dev_lock);
4642                         list_del_init(&dev->list);
4643                         write_unlock(&cnic_dev_lock);
4644
4645                         cnic_put(dev);
4646                         cnic_free_dev(dev);
4647                         goto done;
4648                 }
4649                 cnic_put(dev);
4650         }
4651 done:
4652         return NOTIFY_DONE;
4653 }
4654
4655 static struct notifier_block cnic_netdev_notifier = {
4656         .notifier_call = cnic_netdev_event
4657 };
4658
4659 static void cnic_release(void)
4660 {
4661         struct cnic_dev *dev;
4662
4663         while (!list_empty(&cnic_dev_list)) {
4664                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
4665                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
4666                         cnic_ulp_stop(dev);
4667                         cnic_stop_hw(dev);
4668                 }
4669
4670                 cnic_ulp_exit(dev);
4671                 cnic_unregister_netdev(dev);
4672                 list_del_init(&dev->list);
4673                 cnic_free_dev(dev);
4674         }
4675 }
4676
4677 static int __init cnic_init(void)
4678 {
4679         int rc = 0;
4680
4681         pr_info("%s", version);
4682
4683         rc = register_netdevice_notifier(&cnic_netdev_notifier);
4684         if (rc) {
4685                 cnic_release();
4686                 return rc;
4687         }
4688
4689         return 0;
4690 }
4691
4692 static void __exit cnic_exit(void)
4693 {
4694         unregister_netdevice_notifier(&cnic_netdev_notifier);
4695         cnic_release();
4696 }
4697
4698 module_init(cnic_init);
4699 module_exit(cnic_exit);