linux/drivers/net/ethernet/broadcom/cnic.c
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   1/* cnic.c: QLogic CNIC core network driver.
   2 *
   3 * Copyright (c) 2006-2014 Broadcom Corporation
   4 * Copyright (c) 2014-2015 QLogic Corporation
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation.
   9 *
  10 * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
  11 * Previously modified and maintained by: Michael Chan <mchan@broadcom.com>
  12 * Maintained By: Dept-HSGLinuxNICDev@qlogic.com
  13 */
  14
  15#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  16
  17#include <linux/module.h>
  18
  19#include <linux/kernel.h>
  20#include <linux/errno.h>
  21#include <linux/list.h>
  22#include <linux/slab.h>
  23#include <linux/pci.h>
  24#include <linux/init.h>
  25#include <linux/netdevice.h>
  26#include <linux/uio_driver.h>
  27#include <linux/in.h>
  28#include <linux/dma-mapping.h>
  29#include <linux/delay.h>
  30#include <linux/ethtool.h>
  31#include <linux/if_vlan.h>
  32#include <linux/prefetch.h>
  33#include <linux/random.h>
  34#if IS_ENABLED(CONFIG_VLAN_8021Q)
  35#define BCM_VLAN 1
  36#endif
  37#include <net/ip.h>
  38#include <net/tcp.h>
  39#include <net/route.h>
  40#include <net/ipv6.h>
  41#include <net/ip6_route.h>
  42#include <net/ip6_checksum.h>
  43#include <scsi/iscsi_if.h>
  44
  45#define BCM_CNIC        1
  46#include "cnic_if.h"
  47#include "bnx2.h"
  48#include "bnx2x/bnx2x.h"
  49#include "bnx2x/bnx2x_reg.h"
  50#include "bnx2x/bnx2x_fw_defs.h"
  51#include "bnx2x/bnx2x_hsi.h"
  52#include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
  53#include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
  54#include "../../../scsi/bnx2fc/bnx2fc_constants.h"
  55#include "cnic.h"
  56#include "cnic_defs.h"
  57
  58#define CNIC_MODULE_NAME        "cnic"
  59
  60static char version[] =
  61        "QLogic " CNIC_MODULE_NAME "Driver v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
  62
  63MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
  64              "Chen (zongxi@broadcom.com");
  65MODULE_DESCRIPTION("QLogic cnic Driver");
  66MODULE_LICENSE("GPL");
  67MODULE_VERSION(CNIC_MODULE_VERSION);
  68
  69/* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
  70static LIST_HEAD(cnic_dev_list);
  71static LIST_HEAD(cnic_udev_list);
  72static DEFINE_RWLOCK(cnic_dev_lock);
  73static DEFINE_MUTEX(cnic_lock);
  74
  75static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
  76
  77/* helper function, assuming cnic_lock is held */
  78static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
  79{
  80        return rcu_dereference_protected(cnic_ulp_tbl[type],
  81                                         lockdep_is_held(&cnic_lock));
  82}
  83
  84static int cnic_service_bnx2(void *, void *);
  85static int cnic_service_bnx2x(void *, void *);
  86static int cnic_ctl(void *, struct cnic_ctl_info *);
  87
  88static struct cnic_ops cnic_bnx2_ops = {
  89        .cnic_owner     = THIS_MODULE,
  90        .cnic_handler   = cnic_service_bnx2,
  91        .cnic_ctl       = cnic_ctl,
  92};
  93
  94static struct cnic_ops cnic_bnx2x_ops = {
  95        .cnic_owner     = THIS_MODULE,
  96        .cnic_handler   = cnic_service_bnx2x,
  97        .cnic_ctl       = cnic_ctl,
  98};
  99
 100static struct workqueue_struct *cnic_wq;
 101
 102static void cnic_shutdown_rings(struct cnic_dev *);
 103static void cnic_init_rings(struct cnic_dev *);
 104static int cnic_cm_set_pg(struct cnic_sock *);
 105
 106static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
 107{
 108        struct cnic_uio_dev *udev = uinfo->priv;
 109        struct cnic_dev *dev;
 110
 111        if (!capable(CAP_NET_ADMIN))
 112                return -EPERM;
 113
 114        if (udev->uio_dev != -1)
 115                return -EBUSY;
 116
 117        rtnl_lock();
 118        dev = udev->dev;
 119
 120        if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
 121                rtnl_unlock();
 122                return -ENODEV;
 123        }
 124
 125        udev->uio_dev = iminor(inode);
 126
 127        cnic_shutdown_rings(dev);
 128        cnic_init_rings(dev);
 129        rtnl_unlock();
 130
 131        return 0;
 132}
 133
 134static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
 135{
 136        struct cnic_uio_dev *udev = uinfo->priv;
 137
 138        udev->uio_dev = -1;
 139        return 0;
 140}
 141
 142static inline void cnic_hold(struct cnic_dev *dev)
 143{
 144        atomic_inc(&dev->ref_count);
 145}
 146
 147static inline void cnic_put(struct cnic_dev *dev)
 148{
 149        atomic_dec(&dev->ref_count);
 150}
 151
 152static inline void csk_hold(struct cnic_sock *csk)
 153{
 154        atomic_inc(&csk->ref_count);
 155}
 156
 157static inline void csk_put(struct cnic_sock *csk)
 158{
 159        atomic_dec(&csk->ref_count);
 160}
 161
 162static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
 163{
 164        struct cnic_dev *cdev;
 165
 166        read_lock(&cnic_dev_lock);
 167        list_for_each_entry(cdev, &cnic_dev_list, list) {
 168                if (netdev == cdev->netdev) {
 169                        cnic_hold(cdev);
 170                        read_unlock(&cnic_dev_lock);
 171                        return cdev;
 172                }
 173        }
 174        read_unlock(&cnic_dev_lock);
 175        return NULL;
 176}
 177
 178static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
 179{
 180        atomic_inc(&ulp_ops->ref_count);
 181}
 182
 183static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
 184{
 185        atomic_dec(&ulp_ops->ref_count);
 186}
 187
 188static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
 189{
 190        struct cnic_local *cp = dev->cnic_priv;
 191        struct cnic_eth_dev *ethdev = cp->ethdev;
 192        struct drv_ctl_info info;
 193        struct drv_ctl_io *io = &info.data.io;
 194
 195        memset(&info, 0, sizeof(struct drv_ctl_info));
 196        info.cmd = DRV_CTL_CTX_WR_CMD;
 197        io->cid_addr = cid_addr;
 198        io->offset = off;
 199        io->data = val;
 200        ethdev->drv_ctl(dev->netdev, &info);
 201}
 202
 203static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
 204{
 205        struct cnic_local *cp = dev->cnic_priv;
 206        struct cnic_eth_dev *ethdev = cp->ethdev;
 207        struct drv_ctl_info info;
 208        struct drv_ctl_io *io = &info.data.io;
 209
 210        memset(&info, 0, sizeof(struct drv_ctl_info));
 211        info.cmd = DRV_CTL_CTXTBL_WR_CMD;
 212        io->offset = off;
 213        io->dma_addr = addr;
 214        ethdev->drv_ctl(dev->netdev, &info);
 215}
 216
 217static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
 218{
 219        struct cnic_local *cp = dev->cnic_priv;
 220        struct cnic_eth_dev *ethdev = cp->ethdev;
 221        struct drv_ctl_info info;
 222        struct drv_ctl_l2_ring *ring = &info.data.ring;
 223
 224        memset(&info, 0, sizeof(struct drv_ctl_info));
 225        if (start)
 226                info.cmd = DRV_CTL_START_L2_CMD;
 227        else
 228                info.cmd = DRV_CTL_STOP_L2_CMD;
 229
 230        ring->cid = cid;
 231        ring->client_id = cl_id;
 232        ethdev->drv_ctl(dev->netdev, &info);
 233}
 234
 235static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
 236{
 237        struct cnic_local *cp = dev->cnic_priv;
 238        struct cnic_eth_dev *ethdev = cp->ethdev;
 239        struct drv_ctl_info info;
 240        struct drv_ctl_io *io = &info.data.io;
 241
 242        memset(&info, 0, sizeof(struct drv_ctl_info));
 243        info.cmd = DRV_CTL_IO_WR_CMD;
 244        io->offset = off;
 245        io->data = val;
 246        ethdev->drv_ctl(dev->netdev, &info);
 247}
 248
 249static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
 250{
 251        struct cnic_local *cp = dev->cnic_priv;
 252        struct cnic_eth_dev *ethdev = cp->ethdev;
 253        struct drv_ctl_info info;
 254        struct drv_ctl_io *io = &info.data.io;
 255
 256        memset(&info, 0, sizeof(struct drv_ctl_info));
 257        info.cmd = DRV_CTL_IO_RD_CMD;
 258        io->offset = off;
 259        ethdev->drv_ctl(dev->netdev, &info);
 260        return io->data;
 261}
 262
 263static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg, int state)
 264{
 265        struct cnic_local *cp = dev->cnic_priv;
 266        struct cnic_eth_dev *ethdev = cp->ethdev;
 267        struct drv_ctl_info info;
 268        struct fcoe_capabilities *fcoe_cap =
 269                &info.data.register_data.fcoe_features;
 270
 271        memset(&info, 0, sizeof(struct drv_ctl_info));
 272        if (reg) {
 273                info.cmd = DRV_CTL_ULP_REGISTER_CMD;
 274                if (ulp_type == CNIC_ULP_FCOE && dev->fcoe_cap)
 275                        memcpy(fcoe_cap, dev->fcoe_cap, sizeof(*fcoe_cap));
 276        } else {
 277                info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;
 278        }
 279
 280        info.data.ulp_type = ulp_type;
 281        info.drv_state = state;
 282        ethdev->drv_ctl(dev->netdev, &info);
 283}
 284
 285static int cnic_in_use(struct cnic_sock *csk)
 286{
 287        return test_bit(SK_F_INUSE, &csk->flags);
 288}
 289
 290static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
 291{
 292        struct cnic_local *cp = dev->cnic_priv;
 293        struct cnic_eth_dev *ethdev = cp->ethdev;
 294        struct drv_ctl_info info;
 295
 296        memset(&info, 0, sizeof(struct drv_ctl_info));
 297        info.cmd = cmd;
 298        info.data.credit.credit_count = count;
 299        ethdev->drv_ctl(dev->netdev, &info);
 300}
 301
 302static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
 303{
 304        u32 i;
 305
 306        if (!cp->ctx_tbl)
 307                return -EINVAL;
 308
 309        for (i = 0; i < cp->max_cid_space; i++) {
 310                if (cp->ctx_tbl[i].cid == cid) {
 311                        *l5_cid = i;
 312                        return 0;
 313                }
 314        }
 315        return -EINVAL;
 316}
 317
 318static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
 319                           struct cnic_sock *csk)
 320{
 321        struct iscsi_path path_req;
 322        char *buf = NULL;
 323        u16 len = 0;
 324        u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 325        struct cnic_ulp_ops *ulp_ops;
 326        struct cnic_uio_dev *udev = cp->udev;
 327        int rc = 0, retry = 0;
 328
 329        if (!udev || udev->uio_dev == -1)
 330                return -ENODEV;
 331
 332        if (csk) {
 333                len = sizeof(path_req);
 334                buf = (char *) &path_req;
 335                memset(&path_req, 0, len);
 336
 337                msg_type = ISCSI_KEVENT_PATH_REQ;
 338                path_req.handle = (u64) csk->l5_cid;
 339                if (test_bit(SK_F_IPV6, &csk->flags)) {
 340                        memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
 341                               sizeof(struct in6_addr));
 342                        path_req.ip_addr_len = 16;
 343                } else {
 344                        memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
 345                               sizeof(struct in_addr));
 346                        path_req.ip_addr_len = 4;
 347                }
 348                path_req.vlan_id = csk->vlan_id;
 349                path_req.pmtu = csk->mtu;
 350        }
 351
 352        while (retry < 3) {
 353                rc = 0;
 354                rcu_read_lock();
 355                ulp_ops = rcu_dereference(cp->ulp_ops[CNIC_ULP_ISCSI]);
 356                if (ulp_ops)
 357                        rc = ulp_ops->iscsi_nl_send_msg(
 358                                cp->ulp_handle[CNIC_ULP_ISCSI],
 359                                msg_type, buf, len);
 360                rcu_read_unlock();
 361                if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
 362                        break;
 363
 364                msleep(100);
 365                retry++;
 366        }
 367        return rc;
 368}
 369
 370static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
 371
 372static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
 373                                  char *buf, u16 len)
 374{
 375        int rc = -EINVAL;
 376
 377        switch (msg_type) {
 378        case ISCSI_UEVENT_PATH_UPDATE: {
 379                struct cnic_local *cp;
 380                u32 l5_cid;
 381                struct cnic_sock *csk;
 382                struct iscsi_path *path_resp;
 383
 384                if (len < sizeof(*path_resp))
 385                        break;
 386
 387                path_resp = (struct iscsi_path *) buf;
 388                cp = dev->cnic_priv;
 389                l5_cid = (u32) path_resp->handle;
 390                if (l5_cid >= MAX_CM_SK_TBL_SZ)
 391                        break;
 392
 393                if (!rcu_access_pointer(cp->ulp_ops[CNIC_ULP_L4])) {
 394                        rc = -ENODEV;
 395                        break;
 396                }
 397                csk = &cp->csk_tbl[l5_cid];
 398                csk_hold(csk);
 399                if (cnic_in_use(csk) &&
 400                    test_bit(SK_F_CONNECT_START, &csk->flags)) {
 401
 402                        csk->vlan_id = path_resp->vlan_id;
 403
 404                        memcpy(csk->ha, path_resp->mac_addr, ETH_ALEN);
 405                        if (test_bit(SK_F_IPV6, &csk->flags))
 406                                memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
 407                                       sizeof(struct in6_addr));
 408                        else
 409                                memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
 410                                       sizeof(struct in_addr));
 411
 412                        if (is_valid_ether_addr(csk->ha)) {
 413                                cnic_cm_set_pg(csk);
 414                        } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
 415                                !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 416
 417                                cnic_cm_upcall(cp, csk,
 418                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
 419                                clear_bit(SK_F_CONNECT_START, &csk->flags);
 420                        }
 421                }
 422                csk_put(csk);
 423                rc = 0;
 424        }
 425        }
 426
 427        return rc;
 428}
 429
 430static int cnic_offld_prep(struct cnic_sock *csk)
 431{
 432        if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 433                return 0;
 434
 435        if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
 436                clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
 437                return 0;
 438        }
 439
 440        return 1;
 441}
 442
 443static int cnic_close_prep(struct cnic_sock *csk)
 444{
 445        clear_bit(SK_F_CONNECT_START, &csk->flags);
 446        smp_mb__after_atomic();
 447
 448        if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 449                while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 450                        msleep(1);
 451
 452                return 1;
 453        }
 454        return 0;
 455}
 456
 457static int cnic_abort_prep(struct cnic_sock *csk)
 458{
 459        clear_bit(SK_F_CONNECT_START, &csk->flags);
 460        smp_mb__after_atomic();
 461
 462        while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
 463                msleep(1);
 464
 465        if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
 466                csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
 467                return 1;
 468        }
 469
 470        return 0;
 471}
 472
 473int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 474{
 475        struct cnic_dev *dev;
 476
 477        if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 478                pr_err("%s: Bad type %d\n", __func__, ulp_type);
 479                return -EINVAL;
 480        }
 481        mutex_lock(&cnic_lock);
 482        if (cnic_ulp_tbl_prot(ulp_type)) {
 483                pr_err("%s: Type %d has already been registered\n",
 484                       __func__, ulp_type);
 485                mutex_unlock(&cnic_lock);
 486                return -EBUSY;
 487        }
 488
 489        read_lock(&cnic_dev_lock);
 490        list_for_each_entry(dev, &cnic_dev_list, list) {
 491                struct cnic_local *cp = dev->cnic_priv;
 492
 493                clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
 494        }
 495        read_unlock(&cnic_dev_lock);
 496
 497        atomic_set(&ulp_ops->ref_count, 0);
 498        rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
 499        mutex_unlock(&cnic_lock);
 500
 501        /* Prevent race conditions with netdev_event */
 502        rtnl_lock();
 503        list_for_each_entry(dev, &cnic_dev_list, list) {
 504                struct cnic_local *cp = dev->cnic_priv;
 505
 506                if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 507                        ulp_ops->cnic_init(dev);
 508        }
 509        rtnl_unlock();
 510
 511        return 0;
 512}
 513
 514int cnic_unregister_driver(int ulp_type)
 515{
 516        struct cnic_dev *dev;
 517        struct cnic_ulp_ops *ulp_ops;
 518        int i = 0;
 519
 520        if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 521                pr_err("%s: Bad type %d\n", __func__, ulp_type);
 522                return -EINVAL;
 523        }
 524        mutex_lock(&cnic_lock);
 525        ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 526        if (!ulp_ops) {
 527                pr_err("%s: Type %d has not been registered\n",
 528                       __func__, ulp_type);
 529                goto out_unlock;
 530        }
 531        read_lock(&cnic_dev_lock);
 532        list_for_each_entry(dev, &cnic_dev_list, list) {
 533                struct cnic_local *cp = dev->cnic_priv;
 534
 535                if (rcu_access_pointer(cp->ulp_ops[ulp_type])) {
 536                        pr_err("%s: Type %d still has devices registered\n",
 537                               __func__, ulp_type);
 538                        read_unlock(&cnic_dev_lock);
 539                        goto out_unlock;
 540                }
 541        }
 542        read_unlock(&cnic_dev_lock);
 543
 544        RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);
 545
 546        mutex_unlock(&cnic_lock);
 547        synchronize_rcu();
 548        while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
 549                msleep(100);
 550                i++;
 551        }
 552
 553        if (atomic_read(&ulp_ops->ref_count) != 0)
 554                pr_warn("%s: Failed waiting for ref count to go to zero\n",
 555                        __func__);
 556        return 0;
 557
 558out_unlock:
 559        mutex_unlock(&cnic_lock);
 560        return -EINVAL;
 561}
 562
 563static int cnic_start_hw(struct cnic_dev *);
 564static void cnic_stop_hw(struct cnic_dev *);
 565
 566static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 567                                void *ulp_ctx)
 568{
 569        struct cnic_local *cp = dev->cnic_priv;
 570        struct cnic_ulp_ops *ulp_ops;
 571
 572        if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 573                pr_err("%s: Bad type %d\n", __func__, ulp_type);
 574                return -EINVAL;
 575        }
 576        mutex_lock(&cnic_lock);
 577        if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
 578                pr_err("%s: Driver with type %d has not been registered\n",
 579                       __func__, ulp_type);
 580                mutex_unlock(&cnic_lock);
 581                return -EAGAIN;
 582        }
 583        if (rcu_access_pointer(cp->ulp_ops[ulp_type])) {
 584                pr_err("%s: Type %d has already been registered to this device\n",
 585                       __func__, ulp_type);
 586                mutex_unlock(&cnic_lock);
 587                return -EBUSY;
 588        }
 589
 590        clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
 591        cp->ulp_handle[ulp_type] = ulp_ctx;
 592        ulp_ops = cnic_ulp_tbl_prot(ulp_type);
 593        rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
 594        cnic_hold(dev);
 595
 596        if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
 597                if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
 598                        ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
 599
 600        mutex_unlock(&cnic_lock);
 601
 602        cnic_ulp_ctl(dev, ulp_type, true, DRV_ACTIVE);
 603
 604        return 0;
 605
 606}
 607EXPORT_SYMBOL(cnic_register_driver);
 608
 609static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 610{
 611        struct cnic_local *cp = dev->cnic_priv;
 612        int i = 0;
 613
 614        if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 615                pr_err("%s: Bad type %d\n", __func__, ulp_type);
 616                return -EINVAL;
 617        }
 618
 619        if (ulp_type == CNIC_ULP_ISCSI)
 620                cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
 621
 622        mutex_lock(&cnic_lock);
 623        if (rcu_access_pointer(cp->ulp_ops[ulp_type])) {
 624                RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
 625                cnic_put(dev);
 626        } else {
 627                pr_err("%s: device not registered to this ulp type %d\n",
 628                       __func__, ulp_type);
 629                mutex_unlock(&cnic_lock);
 630                return -EINVAL;
 631        }
 632        mutex_unlock(&cnic_lock);
 633
 634        if (ulp_type == CNIC_ULP_FCOE)
 635                dev->fcoe_cap = NULL;
 636
 637        synchronize_rcu();
 638
 639        while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
 640               i < 20) {
 641                msleep(100);
 642                i++;
 643        }
 644        if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
 645                netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
 646
 647        if (test_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
 648                cnic_ulp_ctl(dev, ulp_type, false, DRV_UNLOADED);
 649        else
 650                cnic_ulp_ctl(dev, ulp_type, false, DRV_INACTIVE);
 651
 652        return 0;
 653}
 654EXPORT_SYMBOL(cnic_unregister_driver);
 655
 656static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
 657                            u32 next)
 658{
 659        id_tbl->start = start_id;
 660        id_tbl->max = size;
 661        id_tbl->next = next;
 662        spin_lock_init(&id_tbl->lock);
 663        id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
 664        if (!id_tbl->table)
 665                return -ENOMEM;
 666
 667        return 0;
 668}
 669
 670static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
 671{
 672        kfree(id_tbl->table);
 673        id_tbl->table = NULL;
 674}
 675
 676static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
 677{
 678        int ret = -1;
 679
 680        id -= id_tbl->start;
 681        if (id >= id_tbl->max)
 682                return ret;
 683
 684        spin_lock(&id_tbl->lock);
 685        if (!test_bit(id, id_tbl->table)) {
 686                set_bit(id, id_tbl->table);
 687                ret = 0;
 688        }
 689        spin_unlock(&id_tbl->lock);
 690        return ret;
 691}
 692
 693/* Returns -1 if not successful */
 694static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
 695{
 696        u32 id;
 697
 698        spin_lock(&id_tbl->lock);
 699        id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 700        if (id >= id_tbl->max) {
 701                id = -1;
 702                if (id_tbl->next != 0) {
 703                        id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 704                        if (id >= id_tbl->next)
 705                                id = -1;
 706                }
 707        }
 708
 709        if (id < id_tbl->max) {
 710                set_bit(id, id_tbl->table);
 711                id_tbl->next = (id + 1) & (id_tbl->max - 1);
 712                id += id_tbl->start;
 713        }
 714
 715        spin_unlock(&id_tbl->lock);
 716
 717        return id;
 718}
 719
 720static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
 721{
 722        if (id == -1)
 723                return;
 724
 725        id -= id_tbl->start;
 726        if (id >= id_tbl->max)
 727                return;
 728
 729        clear_bit(id, id_tbl->table);
 730}
 731
 732static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 733{
 734        int i;
 735
 736        if (!dma->pg_arr)
 737                return;
 738
 739        for (i = 0; i < dma->num_pages; i++) {
 740                if (dma->pg_arr[i]) {
 741                        dma_free_coherent(&dev->pcidev->dev, CNIC_PAGE_SIZE,
 742                                          dma->pg_arr[i], dma->pg_map_arr[i]);
 743                        dma->pg_arr[i] = NULL;
 744                }
 745        }
 746        if (dma->pgtbl) {
 747                dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 748                                  dma->pgtbl, dma->pgtbl_map);
 749                dma->pgtbl = NULL;
 750        }
 751        kfree(dma->pg_arr);
 752        dma->pg_arr = NULL;
 753        dma->num_pages = 0;
 754}
 755
 756static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 757{
 758        int i;
 759        __le32 *page_table = (__le32 *) dma->pgtbl;
 760
 761        for (i = 0; i < dma->num_pages; i++) {
 762                /* Each entry needs to be in big endian format. */
 763                *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 764                page_table++;
 765                *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 766                page_table++;
 767        }
 768}
 769
 770static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 771{
 772        int i;
 773        __le32 *page_table = (__le32 *) dma->pgtbl;
 774
 775        for (i = 0; i < dma->num_pages; i++) {
 776                /* Each entry needs to be in little endian format. */
 777                *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
 778                page_table++;
 779                *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
 780                page_table++;
 781        }
 782}
 783
 784static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
 785                          int pages, int use_pg_tbl)
 786{
 787        int i, size;
 788        struct cnic_local *cp = dev->cnic_priv;
 789
 790        size = pages * (sizeof(void *) + sizeof(dma_addr_t));
 791        dma->pg_arr = kzalloc(size, GFP_ATOMIC);
 792        if (dma->pg_arr == NULL)
 793                return -ENOMEM;
 794
 795        dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
 796        dma->num_pages = pages;
 797
 798        for (i = 0; i < pages; i++) {
 799                dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
 800                                                    CNIC_PAGE_SIZE,
 801                                                    &dma->pg_map_arr[i],
 802                                                    GFP_ATOMIC);
 803                if (dma->pg_arr[i] == NULL)
 804                        goto error;
 805        }
 806        if (!use_pg_tbl)
 807                return 0;
 808
 809        dma->pgtbl_size = ((pages * 8) + CNIC_PAGE_SIZE - 1) &
 810                          ~(CNIC_PAGE_SIZE - 1);
 811        dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
 812                                        &dma->pgtbl_map, GFP_ATOMIC);
 813        if (dma->pgtbl == NULL)
 814                goto error;
 815
 816        cp->setup_pgtbl(dev, dma);
 817
 818        return 0;
 819
 820error:
 821        cnic_free_dma(dev, dma);
 822        return -ENOMEM;
 823}
 824
 825static void cnic_free_context(struct cnic_dev *dev)
 826{
 827        struct cnic_local *cp = dev->cnic_priv;
 828        int i;
 829
 830        for (i = 0; i < cp->ctx_blks; i++) {
 831                if (cp->ctx_arr[i].ctx) {
 832                        dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
 833                                          cp->ctx_arr[i].ctx,
 834                                          cp->ctx_arr[i].mapping);
 835                        cp->ctx_arr[i].ctx = NULL;
 836                }
 837        }
 838}
 839
 840static void __cnic_free_uio_rings(struct cnic_uio_dev *udev)
 841{
 842        if (udev->l2_buf) {
 843                dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
 844                                  udev->l2_buf, udev->l2_buf_map);
 845                udev->l2_buf = NULL;
 846        }
 847
 848        if (udev->l2_ring) {
 849                dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
 850                                  udev->l2_ring, udev->l2_ring_map);
 851                udev->l2_ring = NULL;
 852        }
 853
 854}
 855
 856static void __cnic_free_uio(struct cnic_uio_dev *udev)
 857{
 858        uio_unregister_device(&udev->cnic_uinfo);
 859
 860        __cnic_free_uio_rings(udev);
 861
 862        pci_dev_put(udev->pdev);
 863        kfree(udev);
 864}
 865
 866static void cnic_free_uio(struct cnic_uio_dev *udev)
 867{
 868        if (!udev)
 869                return;
 870
 871        write_lock(&cnic_dev_lock);
 872        list_del_init(&udev->list);
 873        write_unlock(&cnic_dev_lock);
 874        __cnic_free_uio(udev);
 875}
 876
 877static void cnic_free_resc(struct cnic_dev *dev)
 878{
 879        struct cnic_local *cp = dev->cnic_priv;
 880        struct cnic_uio_dev *udev = cp->udev;
 881
 882        if (udev) {
 883                udev->dev = NULL;
 884                cp->udev = NULL;
 885                if (udev->uio_dev == -1)
 886                        __cnic_free_uio_rings(udev);
 887        }
 888
 889        cnic_free_context(dev);
 890        kfree(cp->ctx_arr);
 891        cp->ctx_arr = NULL;
 892        cp->ctx_blks = 0;
 893
 894        cnic_free_dma(dev, &cp->gbl_buf_info);
 895        cnic_free_dma(dev, &cp->kwq_info);
 896        cnic_free_dma(dev, &cp->kwq_16_data_info);
 897        cnic_free_dma(dev, &cp->kcq2.dma);
 898        cnic_free_dma(dev, &cp->kcq1.dma);
 899        kfree(cp->iscsi_tbl);
 900        cp->iscsi_tbl = NULL;
 901        kfree(cp->ctx_tbl);
 902        cp->ctx_tbl = NULL;
 903
 904        cnic_free_id_tbl(&cp->fcoe_cid_tbl);
 905        cnic_free_id_tbl(&cp->cid_tbl);
 906}
 907
 908static int cnic_alloc_context(struct cnic_dev *dev)
 909{
 910        struct cnic_local *cp = dev->cnic_priv;
 911
 912        if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
 913                int i, k, arr_size;
 914
 915                cp->ctx_blk_size = CNIC_PAGE_SIZE;
 916                cp->cids_per_blk = CNIC_PAGE_SIZE / 128;
 917                arr_size = BNX2_MAX_CID / cp->cids_per_blk *
 918                           sizeof(struct cnic_ctx);
 919                cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
 920                if (cp->ctx_arr == NULL)
 921                        return -ENOMEM;
 922
 923                k = 0;
 924                for (i = 0; i < 2; i++) {
 925                        u32 j, reg, off, lo, hi;
 926
 927                        if (i == 0)
 928                                off = BNX2_PG_CTX_MAP;
 929                        else
 930                                off = BNX2_ISCSI_CTX_MAP;
 931
 932                        reg = cnic_reg_rd_ind(dev, off);
 933                        lo = reg >> 16;
 934                        hi = reg & 0xffff;
 935                        for (j = lo; j < hi; j += cp->cids_per_blk, k++)
 936                                cp->ctx_arr[k].cid = j;
 937                }
 938
 939                cp->ctx_blks = k;
 940                if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
 941                        cp->ctx_blks = 0;
 942                        return -ENOMEM;
 943                }
 944
 945                for (i = 0; i < cp->ctx_blks; i++) {
 946                        cp->ctx_arr[i].ctx =
 947                                dma_alloc_coherent(&dev->pcidev->dev,
 948                                                   CNIC_PAGE_SIZE,
 949                                                   &cp->ctx_arr[i].mapping,
 950                                                   GFP_KERNEL);
 951                        if (cp->ctx_arr[i].ctx == NULL)
 952                                return -ENOMEM;
 953                }
 954        }
 955        return 0;
 956}
 957
 958static u16 cnic_bnx2_next_idx(u16 idx)
 959{
 960        return idx + 1;
 961}
 962
 963static u16 cnic_bnx2_hw_idx(u16 idx)
 964{
 965        return idx;
 966}
 967
 968static u16 cnic_bnx2x_next_idx(u16 idx)
 969{
 970        idx++;
 971        if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 972                idx++;
 973
 974        return idx;
 975}
 976
 977static u16 cnic_bnx2x_hw_idx(u16 idx)
 978{
 979        if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
 980                idx++;
 981        return idx;
 982}
 983
 984static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
 985                          bool use_pg_tbl)
 986{
 987        int err, i, use_page_tbl = 0;
 988        struct kcqe **kcq;
 989
 990        if (use_pg_tbl)
 991                use_page_tbl = 1;
 992
 993        err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
 994        if (err)
 995                return err;
 996
 997        kcq = (struct kcqe **) info->dma.pg_arr;
 998        info->kcq = kcq;
 999
1000        info->next_idx = cnic_bnx2_next_idx;
1001        info->hw_idx = cnic_bnx2_hw_idx;
1002        if (use_pg_tbl)
1003                return 0;
1004
1005        info->next_idx = cnic_bnx2x_next_idx;
1006        info->hw_idx = cnic_bnx2x_hw_idx;
1007
1008        for (i = 0; i < KCQ_PAGE_CNT; i++) {
1009                struct bnx2x_bd_chain_next *next =
1010                        (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
1011                int j = i + 1;
1012
1013                if (j >= KCQ_PAGE_CNT)
1014                        j = 0;
1015                next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
1016                next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
1017        }
1018        return 0;
1019}
1020
1021static int __cnic_alloc_uio_rings(struct cnic_uio_dev *udev, int pages)
1022{
1023        struct cnic_local *cp = udev->dev->cnic_priv;
1024
1025        if (udev->l2_ring)
1026                return 0;
1027
1028        udev->l2_ring_size = pages * CNIC_PAGE_SIZE;
1029        udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
1030                                           &udev->l2_ring_map,
1031                                           GFP_KERNEL | __GFP_COMP);
1032        if (!udev->l2_ring)
1033                return -ENOMEM;
1034
1035        udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
1036        udev->l2_buf_size = CNIC_PAGE_ALIGN(udev->l2_buf_size);
1037        udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1038                                          &udev->l2_buf_map,
1039                                          GFP_KERNEL | __GFP_COMP);
1040        if (!udev->l2_buf) {
1041                __cnic_free_uio_rings(udev);
1042                return -ENOMEM;
1043        }
1044
1045        return 0;
1046
1047}
1048
1049static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
1050{
1051        struct cnic_local *cp = dev->cnic_priv;
1052        struct cnic_uio_dev *udev;
1053
1054        list_for_each_entry(udev, &cnic_udev_list, list) {
1055                if (udev->pdev == dev->pcidev) {
1056                        udev->dev = dev;
1057                        if (__cnic_alloc_uio_rings(udev, pages)) {
1058                                udev->dev = NULL;
1059                                return -ENOMEM;
1060                        }
1061                        cp->udev = udev;
1062                        return 0;
1063                }
1064        }
1065
1066        udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
1067        if (!udev)
1068                return -ENOMEM;
1069
1070        udev->uio_dev = -1;
1071
1072        udev->dev = dev;
1073        udev->pdev = dev->pcidev;
1074
1075        if (__cnic_alloc_uio_rings(udev, pages))
1076                goto err_udev;
1077
1078        list_add(&udev->list, &cnic_udev_list);
1079
1080        pci_dev_get(udev->pdev);
1081
1082        cp->udev = udev;
1083
1084        return 0;
1085
1086 err_udev:
1087        kfree(udev);
1088        return -ENOMEM;
1089}
1090
1091static int cnic_init_uio(struct cnic_dev *dev)
1092{
1093        struct cnic_local *cp = dev->cnic_priv;
1094        struct cnic_uio_dev *udev = cp->udev;
1095        struct uio_info *uinfo;
1096        int ret = 0;
1097
1098        if (!udev)
1099                return -ENOMEM;
1100
1101        uinfo = &udev->cnic_uinfo;
1102
1103        uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
1104        uinfo->mem[0].internal_addr = dev->regview;
1105        uinfo->mem[0].memtype = UIO_MEM_PHYS;
1106
1107        if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1108                uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
1109                                                     TX_MAX_TSS_RINGS + 1);
1110                uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1111                                        CNIC_PAGE_MASK;
1112                if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1113                        uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1114                else
1115                        uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1116
1117                uinfo->name = "bnx2_cnic";
1118        } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1119                uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);
1120
1121                uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1122                        CNIC_PAGE_MASK;
1123                uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1124
1125                uinfo->name = "bnx2x_cnic";
1126        }
1127
1128        uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1129
1130        uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1131        uinfo->mem[2].size = udev->l2_ring_size;
1132        uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1133
1134        uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1135        uinfo->mem[3].size = udev->l2_buf_size;
1136        uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1137
1138        uinfo->version = CNIC_MODULE_VERSION;
1139        uinfo->irq = UIO_IRQ_CUSTOM;
1140
1141        uinfo->open = cnic_uio_open;
1142        uinfo->release = cnic_uio_close;
1143
1144        if (udev->uio_dev == -1) {
1145                if (!uinfo->priv) {
1146                        uinfo->priv = udev;
1147
1148                        ret = uio_register_device(&udev->pdev->dev, uinfo);
1149                }
1150        } else {
1151                cnic_init_rings(dev);
1152        }
1153
1154        return ret;
1155}
1156
1157static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1158{
1159        struct cnic_local *cp = dev->cnic_priv;
1160        int ret;
1161
1162        ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1163        if (ret)
1164                goto error;
1165        cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1166
1167        ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1168        if (ret)
1169                goto error;
1170
1171        ret = cnic_alloc_context(dev);
1172        if (ret)
1173                goto error;
1174
1175        ret = cnic_alloc_uio_rings(dev, 2);
1176        if (ret)
1177                goto error;
1178
1179        ret = cnic_init_uio(dev);
1180        if (ret)
1181                goto error;
1182
1183        return 0;
1184
1185error:
1186        cnic_free_resc(dev);
1187        return ret;
1188}
1189
1190static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1191{
1192        struct cnic_local *cp = dev->cnic_priv;
1193        struct bnx2x *bp = netdev_priv(dev->netdev);
1194        int ctx_blk_size = cp->ethdev->ctx_blk_size;
1195        int total_mem, blks, i;
1196
1197        total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1198        blks = total_mem / ctx_blk_size;
1199        if (total_mem % ctx_blk_size)
1200                blks++;
1201
1202        if (blks > cp->ethdev->ctx_tbl_len)
1203                return -ENOMEM;
1204
1205        cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1206        if (cp->ctx_arr == NULL)
1207                return -ENOMEM;
1208
1209        cp->ctx_blks = blks;
1210        cp->ctx_blk_size = ctx_blk_size;
1211        if (!CHIP_IS_E1(bp))
1212                cp->ctx_align = 0;
1213        else
1214                cp->ctx_align = ctx_blk_size;
1215
1216        cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1217
1218        for (i = 0; i < blks; i++) {
1219                cp->ctx_arr[i].ctx =
1220                        dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1221                                           &cp->ctx_arr[i].mapping,
1222                                           GFP_KERNEL);
1223                if (cp->ctx_arr[i].ctx == NULL)
1224                        return -ENOMEM;
1225
1226                if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1227                        if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1228                                cnic_free_context(dev);
1229                                cp->ctx_blk_size += cp->ctx_align;
1230                                i = -1;
1231                                continue;
1232                        }
1233                }
1234        }
1235        return 0;
1236}
1237
1238static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1239{
1240        struct cnic_local *cp = dev->cnic_priv;
1241        struct bnx2x *bp = netdev_priv(dev->netdev);
1242        struct cnic_eth_dev *ethdev = cp->ethdev;
1243        u32 start_cid = ethdev->starting_cid;
1244        int i, j, n, ret, pages;
1245        struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1246
1247        cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1248        cp->iscsi_start_cid = start_cid;
1249        cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1250
1251        if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
1252                cp->max_cid_space += dev->max_fcoe_conn;
1253                cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1254                if (!cp->fcoe_init_cid)
1255                        cp->fcoe_init_cid = 0x10;
1256        }
1257
1258        cp->iscsi_tbl = kcalloc(MAX_ISCSI_TBL_SZ, sizeof(struct cnic_iscsi),
1259                                GFP_KERNEL);
1260        if (!cp->iscsi_tbl)
1261                goto error;
1262
1263        cp->ctx_tbl = kcalloc(cp->max_cid_space, sizeof(struct cnic_context),
1264                              GFP_KERNEL);
1265        if (!cp->ctx_tbl)
1266                goto error;
1267
1268        for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1269                cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1270                cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1271        }
1272
1273        for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1274                cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1275
1276        pages = CNIC_PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1277                CNIC_PAGE_SIZE;
1278
1279        ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1280        if (ret)
1281                goto error;
1282
1283        n = CNIC_PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1284        for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1285                long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1286
1287                cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1288                cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1289                                                   off;
1290
1291                if ((i % n) == (n - 1))
1292                        j++;
1293        }
1294
1295        ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1296        if (ret)
1297                goto error;
1298
1299        if (CNIC_SUPPORTS_FCOE(bp)) {
1300                ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1301                if (ret)
1302                        goto error;
1303        }
1304
1305        pages = CNIC_PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / CNIC_PAGE_SIZE;
1306        ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1307        if (ret)
1308                goto error;
1309
1310        ret = cnic_alloc_bnx2x_context(dev);
1311        if (ret)
1312                goto error;
1313
1314        if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
1315                return 0;
1316
1317        cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1318
1319        cp->l2_rx_ring_size = 15;
1320
1321        ret = cnic_alloc_uio_rings(dev, 4);
1322        if (ret)
1323                goto error;
1324
1325        ret = cnic_init_uio(dev);
1326        if (ret)
1327                goto error;
1328
1329        return 0;
1330
1331error:
1332        cnic_free_resc(dev);
1333        return -ENOMEM;
1334}
1335
1336static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1337{
1338        return cp->max_kwq_idx -
1339                ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1340}
1341
1342static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1343                                  u32 num_wqes)
1344{
1345        struct cnic_local *cp = dev->cnic_priv;
1346        struct kwqe *prod_qe;
1347        u16 prod, sw_prod, i;
1348
1349        if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1350                return -EAGAIN;         /* bnx2 is down */
1351
1352        spin_lock_bh(&cp->cnic_ulp_lock);
1353        if (num_wqes > cnic_kwq_avail(cp) &&
1354            !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1355                spin_unlock_bh(&cp->cnic_ulp_lock);
1356                return -EAGAIN;
1357        }
1358
1359        clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1360
1361        prod = cp->kwq_prod_idx;
1362        sw_prod = prod & MAX_KWQ_IDX;
1363        for (i = 0; i < num_wqes; i++) {
1364                prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1365                memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1366                prod++;
1367                sw_prod = prod & MAX_KWQ_IDX;
1368        }
1369        cp->kwq_prod_idx = prod;
1370
1371        CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1372
1373        spin_unlock_bh(&cp->cnic_ulp_lock);
1374        return 0;
1375}
1376
1377static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1378                                   union l5cm_specific_data *l5_data)
1379{
1380        struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1381        dma_addr_t map;
1382
1383        map = ctx->kwqe_data_mapping;
1384        l5_data->phy_address.lo = (u64) map & 0xffffffff;
1385        l5_data->phy_address.hi = (u64) map >> 32;
1386        return ctx->kwqe_data;
1387}
1388
1389static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1390                                u32 type, union l5cm_specific_data *l5_data)
1391{
1392        struct cnic_local *cp = dev->cnic_priv;
1393        struct bnx2x *bp = netdev_priv(dev->netdev);
1394        struct l5cm_spe kwqe;
1395        struct kwqe_16 *kwq[1];
1396        u16 type_16;
1397        int ret;
1398
1399        kwqe.hdr.conn_and_cmd_data =
1400                cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1401                             BNX2X_HW_CID(bp, cid)));
1402
1403        type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1404        type_16 |= (bp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1405                   SPE_HDR_FUNCTION_ID;
1406
1407        kwqe.hdr.type = cpu_to_le16(type_16);
1408        kwqe.hdr.reserved1 = 0;
1409        kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1410        kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1411
1412        kwq[0] = (struct kwqe_16 *) &kwqe;
1413
1414        spin_lock_bh(&cp->cnic_ulp_lock);
1415        ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1416        spin_unlock_bh(&cp->cnic_ulp_lock);
1417
1418        if (ret == 1)
1419                return 0;
1420
1421        return ret;
1422}
1423
1424static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1425                                   struct kcqe *cqes[], u32 num_cqes)
1426{
1427        struct cnic_local *cp = dev->cnic_priv;
1428        struct cnic_ulp_ops *ulp_ops;
1429
1430        rcu_read_lock();
1431        ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1432        if (likely(ulp_ops)) {
1433                ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1434                                          cqes, num_cqes);
1435        }
1436        rcu_read_unlock();
1437}
1438
1439static void cnic_bnx2x_set_tcp_options(struct cnic_dev *dev, int time_stamps,
1440                                       int en_tcp_dack)
1441{
1442        struct bnx2x *bp = netdev_priv(dev->netdev);
1443        u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1444        u16 tstorm_flags = 0;
1445
1446        if (time_stamps) {
1447                xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1448                tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1449        }
1450        if (en_tcp_dack)
1451                tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_DELAYED_ACK_EN;
1452
1453        CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1454                 XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), xstorm_flags);
1455
1456        CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1457                  TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), tstorm_flags);
1458}
1459
1460static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1461{
1462        struct cnic_local *cp = dev->cnic_priv;
1463        struct bnx2x *bp = netdev_priv(dev->netdev);
1464        struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1465        int hq_bds, pages;
1466        u32 pfid = bp->pfid;
1467
1468        cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1469        cp->num_ccells = req1->num_ccells_per_conn;
1470        cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1471                              cp->num_iscsi_tasks;
1472        cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1473                        BNX2X_ISCSI_R2TQE_SIZE;
1474        cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1475        pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1476        hq_bds = pages * (CNIC_PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1477        cp->num_cqs = req1->num_cqs;
1478
1479        if (!dev->max_iscsi_conn)
1480                return 0;
1481
1482        /* init Tstorm RAM */
1483        CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1484                  req1->rq_num_wqes);
1485        CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1486                  CNIC_PAGE_SIZE);
1487        CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1488                 TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1489        CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1490                  TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1491                  req1->num_tasks_per_conn);
1492
1493        /* init Ustorm RAM */
1494        CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1495                  USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1496                  req1->rq_buffer_size);
1497        CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1498                  CNIC_PAGE_SIZE);
1499        CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1500                 USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1501        CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1502                  USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1503                  req1->num_tasks_per_conn);
1504        CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1505                  req1->rq_num_wqes);
1506        CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1507                  req1->cq_num_wqes);
1508        CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1509                  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1510
1511        /* init Xstorm RAM */
1512        CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1513                  CNIC_PAGE_SIZE);
1514        CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1515                 XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1516        CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1517                  XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1518                  req1->num_tasks_per_conn);
1519        CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1520                  hq_bds);
1521        CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1522                  req1->num_tasks_per_conn);
1523        CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1524                  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1525
1526        /* init Cstorm RAM */
1527        CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1528                  CNIC_PAGE_SIZE);
1529        CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1530                 CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
1531        CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1532                  CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1533                  req1->num_tasks_per_conn);
1534        CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1535                  req1->cq_num_wqes);
1536        CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1537                  hq_bds);
1538
1539        cnic_bnx2x_set_tcp_options(dev,
1540                        req1->flags & ISCSI_KWQE_INIT1_TIME_STAMPS_ENABLE,
1541                        req1->flags & ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE);
1542
1543        return 0;
1544}
1545
1546static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1547{
1548        struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1549        struct bnx2x *bp = netdev_priv(dev->netdev);
1550        u32 pfid = bp->pfid;
1551        struct iscsi_kcqe kcqe;
1552        struct kcqe *cqes[1];
1553
1554        memset(&kcqe, 0, sizeof(kcqe));
1555        if (!dev->max_iscsi_conn) {
1556                kcqe.completion_status =
1557                        ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1558                goto done;
1559        }
1560
1561        CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1562                TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1563        CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1564                TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1565                req2->error_bit_map[1]);
1566
1567        CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1568                  USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1569        CNIC_WR(dev, BAR_USTRORM_INTMEM +
1570                USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1571        CNIC_WR(dev, BAR_USTRORM_INTMEM +
1572                USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1573                req2->error_bit_map[1]);
1574
1575        CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1576                  CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1577
1578        kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1579
1580done:
1581        kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1582        cqes[0] = (struct kcqe *) &kcqe;
1583        cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1584
1585        return 0;
1586}
1587
1588static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1589{
1590        struct cnic_local *cp = dev->cnic_priv;
1591        struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1592
1593        if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1594                struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1595
1596                cnic_free_dma(dev, &iscsi->hq_info);
1597                cnic_free_dma(dev, &iscsi->r2tq_info);
1598                cnic_free_dma(dev, &iscsi->task_array_info);
1599                cnic_free_id(&cp->cid_tbl, ctx->cid);
1600        } else {
1601                cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1602        }
1603
1604        ctx->cid = 0;
1605}
1606
1607static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1608{
1609        u32 cid;
1610        int ret, pages;
1611        struct cnic_local *cp = dev->cnic_priv;
1612        struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1613        struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1614
1615        if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1616                cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1617                if (cid == -1) {
1618                        ret = -ENOMEM;
1619                        goto error;
1620                }
1621                ctx->cid = cid;
1622                return 0;
1623        }
1624
1625        cid = cnic_alloc_new_id(&cp->cid_tbl);
1626        if (cid == -1) {
1627                ret = -ENOMEM;
1628                goto error;
1629        }
1630
1631        ctx->cid = cid;
1632        pages = CNIC_PAGE_ALIGN(cp->task_array_size) / CNIC_PAGE_SIZE;
1633
1634        ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1635        if (ret)
1636                goto error;
1637
1638        pages = CNIC_PAGE_ALIGN(cp->r2tq_size) / CNIC_PAGE_SIZE;
1639        ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1640        if (ret)
1641                goto error;
1642
1643        pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
1644        ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1645        if (ret)
1646                goto error;
1647
1648        return 0;
1649
1650error:
1651        cnic_free_bnx2x_conn_resc(dev, l5_cid);
1652        return ret;
1653}
1654
1655static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1656                                struct regpair *ctx_addr)
1657{
1658        struct cnic_local *cp = dev->cnic_priv;
1659        struct cnic_eth_dev *ethdev = cp->ethdev;
1660        int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1661        int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1662        unsigned long align_off = 0;
1663        dma_addr_t ctx_map;
1664        void *ctx;
1665
1666        if (cp->ctx_align) {
1667                unsigned long mask = cp->ctx_align - 1;
1668
1669                if (cp->ctx_arr[blk].mapping & mask)
1670                        align_off = cp->ctx_align -
1671                                    (cp->ctx_arr[blk].mapping & mask);
1672        }
1673        ctx_map = cp->ctx_arr[blk].mapping + align_off +
1674                (off * BNX2X_CONTEXT_MEM_SIZE);
1675        ctx = cp->ctx_arr[blk].ctx + align_off +
1676              (off * BNX2X_CONTEXT_MEM_SIZE);
1677        if (init)
1678                memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1679
1680        ctx_addr->lo = ctx_map & 0xffffffff;
1681        ctx_addr->hi = (u64) ctx_map >> 32;
1682        return ctx;
1683}
1684
1685static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1686                                u32 num)
1687{
1688        struct cnic_local *cp = dev->cnic_priv;
1689        struct bnx2x *bp = netdev_priv(dev->netdev);
1690        struct iscsi_kwqe_conn_offload1 *req1 =
1691                        (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1692        struct iscsi_kwqe_conn_offload2 *req2 =
1693                        (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1694        struct iscsi_kwqe_conn_offload3 *req3;
1695        struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1696        struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1697        u32 cid = ctx->cid;
1698        u32 hw_cid = BNX2X_HW_CID(bp, cid);
1699        struct iscsi_context *ictx;
1700        struct regpair context_addr;
1701        int i, j, n = 2, n_max;
1702        u8 port = BP_PORT(bp);
1703
1704        ctx->ctx_flags = 0;
1705        if (!req2->num_additional_wqes)
1706                return -EINVAL;
1707
1708        n_max = req2->num_additional_wqes + 2;
1709
1710        ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1711        if (ictx == NULL)
1712                return -ENOMEM;
1713
1714        req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1715
1716        ictx->xstorm_ag_context.hq_prod = 1;
1717
1718        ictx->xstorm_st_context.iscsi.first_burst_length =
1719                ISCSI_DEF_FIRST_BURST_LEN;
1720        ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1721                ISCSI_DEF_MAX_RECV_SEG_LEN;
1722        ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1723                req1->sq_page_table_addr_lo;
1724        ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1725                req1->sq_page_table_addr_hi;
1726        ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1727        ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1728        ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1729                iscsi->hq_info.pgtbl_map & 0xffffffff;
1730        ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1731                (u64) iscsi->hq_info.pgtbl_map >> 32;
1732        ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1733                iscsi->hq_info.pgtbl[0];
1734        ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1735                iscsi->hq_info.pgtbl[1];
1736        ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1737                iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1738        ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1739                (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1740        ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1741                iscsi->r2tq_info.pgtbl[0];
1742        ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1743                iscsi->r2tq_info.pgtbl[1];
1744        ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1745                iscsi->task_array_info.pgtbl_map & 0xffffffff;
1746        ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1747                (u64) iscsi->task_array_info.pgtbl_map >> 32;
1748        ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1749                BNX2X_ISCSI_PBL_NOT_CACHED;
1750        ictx->xstorm_st_context.iscsi.flags.flags |=
1751                XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1752        ictx->xstorm_st_context.iscsi.flags.flags |=
1753                XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1754        ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1755                ETH_P_8021Q;
1756        if (BNX2X_CHIP_IS_E2_PLUS(bp) &&
1757            bp->common.chip_port_mode == CHIP_2_PORT_MODE) {
1758
1759                port = 0;
1760        }
1761        ictx->xstorm_st_context.common.flags =
1762                1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1763        ictx->xstorm_st_context.common.flags =
1764                port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1765
1766        ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1767        /* TSTORM requires the base address of RQ DB & not PTE */
1768        ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1769                req2->rq_page_table_addr_lo & CNIC_PAGE_MASK;
1770        ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1771                req2->rq_page_table_addr_hi;
1772        ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1773        ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1774        ictx->tstorm_st_context.tcp.flags2 |=
1775                TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1776        ictx->tstorm_st_context.tcp.ooo_support_mode =
1777                TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1778
1779        ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1780
1781        ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1782                req2->rq_page_table_addr_lo;
1783        ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1784                req2->rq_page_table_addr_hi;
1785        ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1786        ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1787        ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1788                iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1789        ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1790                (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1791        ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1792                iscsi->r2tq_info.pgtbl[0];
1793        ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1794                iscsi->r2tq_info.pgtbl[1];
1795        ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1796                req1->cq_page_table_addr_lo;
1797        ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1798                req1->cq_page_table_addr_hi;
1799        ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1800        ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1801        ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1802        ictx->ustorm_st_context.task_pbe_cache_index =
1803                BNX2X_ISCSI_PBL_NOT_CACHED;
1804        ictx->ustorm_st_context.task_pdu_cache_index =
1805                BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1806
1807        for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1808                if (j == 3) {
1809                        if (n >= n_max)
1810                                break;
1811                        req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1812                        j = 0;
1813                }
1814                ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1815                ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1816                        req3->qp_first_pte[j].hi;
1817                ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1818                        req3->qp_first_pte[j].lo;
1819        }
1820
1821        ictx->ustorm_st_context.task_pbl_base.lo =
1822                iscsi->task_array_info.pgtbl_map & 0xffffffff;
1823        ictx->ustorm_st_context.task_pbl_base.hi =
1824                (u64) iscsi->task_array_info.pgtbl_map >> 32;
1825        ictx->ustorm_st_context.tce_phy_addr.lo =
1826                iscsi->task_array_info.pgtbl[0];
1827        ictx->ustorm_st_context.tce_phy_addr.hi =
1828                iscsi->task_array_info.pgtbl[1];
1829        ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1830        ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1831        ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1832        ictx->ustorm_st_context.negotiated_rx_and_flags |=
1833                ISCSI_DEF_MAX_BURST_LEN;
1834        ictx->ustorm_st_context.negotiated_rx |=
1835                ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1836                USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1837
1838        ictx->cstorm_st_context.hq_pbl_base.lo =
1839                iscsi->hq_info.pgtbl_map & 0xffffffff;
1840        ictx->cstorm_st_context.hq_pbl_base.hi =
1841                (u64) iscsi->hq_info.pgtbl_map >> 32;
1842        ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1843        ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1844        ictx->cstorm_st_context.task_pbl_base.lo =
1845                iscsi->task_array_info.pgtbl_map & 0xffffffff;
1846        ictx->cstorm_st_context.task_pbl_base.hi =
1847                (u64) iscsi->task_array_info.pgtbl_map >> 32;
1848        /* CSTORM and USTORM initialization is different, CSTORM requires
1849         * CQ DB base & not PTE addr */
1850        ictx->cstorm_st_context.cq_db_base.lo =
1851                req1->cq_page_table_addr_lo & CNIC_PAGE_MASK;
1852        ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1853        ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1854        ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1855        for (i = 0; i < cp->num_cqs; i++) {
1856                ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1857                        ISCSI_INITIAL_SN;
1858                ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1859                        ISCSI_INITIAL_SN;
1860        }
1861
1862        ictx->xstorm_ag_context.cdu_reserved =
1863                CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1864                                       ISCSI_CONNECTION_TYPE);
1865        ictx->ustorm_ag_context.cdu_usage =
1866                CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1867                                       ISCSI_CONNECTION_TYPE);
1868        return 0;
1869
1870}
1871
1872static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1873                                   u32 num, int *work)
1874{
1875        struct iscsi_kwqe_conn_offload1 *req1;
1876        struct iscsi_kwqe_conn_offload2 *req2;
1877        struct cnic_local *cp = dev->cnic_priv;
1878        struct bnx2x *bp = netdev_priv(dev->netdev);
1879        struct cnic_context *ctx;
1880        struct iscsi_kcqe kcqe;
1881        struct kcqe *cqes[1];
1882        u32 l5_cid;
1883        int ret = 0;
1884
1885        if (num < 2) {
1886                *work = num;
1887                return -EINVAL;
1888        }
1889
1890        req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1891        req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1892        if ((num - 2) < req2->num_additional_wqes) {
1893                *work = num;
1894                return -EINVAL;
1895        }
1896        *work = 2 + req2->num_additional_wqes;
1897
1898        l5_cid = req1->iscsi_conn_id;
1899        if (l5_cid >= MAX_ISCSI_TBL_SZ)
1900                return -EINVAL;
1901
1902        memset(&kcqe, 0, sizeof(kcqe));
1903        kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1904        kcqe.iscsi_conn_id = l5_cid;
1905        kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1906
1907        ctx = &cp->ctx_tbl[l5_cid];
1908        if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1909                kcqe.completion_status =
1910                        ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1911                goto done;
1912        }
1913
1914        if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1915                atomic_dec(&cp->iscsi_conn);
1916                goto done;
1917        }
1918        ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1919        if (ret) {
1920                atomic_dec(&cp->iscsi_conn);
1921                goto done;
1922        }
1923        ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1924        if (ret < 0) {
1925                cnic_free_bnx2x_conn_resc(dev, l5_cid);
1926                atomic_dec(&cp->iscsi_conn);
1927                goto done;
1928        }
1929
1930        kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1931        kcqe.iscsi_conn_context_id = BNX2X_HW_CID(bp, cp->ctx_tbl[l5_cid].cid);
1932
1933done:
1934        cqes[0] = (struct kcqe *) &kcqe;
1935        cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1936        return 0;
1937}
1938
1939
1940static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1941{
1942        struct cnic_local *cp = dev->cnic_priv;
1943        struct iscsi_kwqe_conn_update *req =
1944                (struct iscsi_kwqe_conn_update *) kwqe;
1945        void *data;
1946        union l5cm_specific_data l5_data;
1947        u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1948        int ret;
1949
1950        if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1951                return -EINVAL;
1952
1953        data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1954        if (!data)
1955                return -ENOMEM;
1956
1957        memcpy(data, kwqe, sizeof(struct kwqe));
1958
1959        ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1960                        req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1961        return ret;
1962}
1963
1964static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1965{
1966        struct cnic_local *cp = dev->cnic_priv;
1967        struct bnx2x *bp = netdev_priv(dev->netdev);
1968        struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1969        union l5cm_specific_data l5_data;
1970        int ret;
1971        u32 hw_cid;
1972
1973        init_waitqueue_head(&ctx->waitq);
1974        ctx->wait_cond = 0;
1975        memset(&l5_data, 0, sizeof(l5_data));
1976        hw_cid = BNX2X_HW_CID(bp, ctx->cid);
1977
1978        ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1979                                  hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1980
1981        if (ret == 0) {
1982                wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1983                if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1984                        return -EBUSY;
1985        }
1986
1987        return 0;
1988}
1989
1990static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1991{
1992        struct cnic_local *cp = dev->cnic_priv;
1993        struct iscsi_kwqe_conn_destroy *req =
1994                (struct iscsi_kwqe_conn_destroy *) kwqe;
1995        u32 l5_cid = req->reserved0;
1996        struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1997        int ret = 0;
1998        struct iscsi_kcqe kcqe;
1999        struct kcqe *cqes[1];
2000
2001        if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2002                goto skip_cfc_delete;
2003
2004        if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
2005                unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
2006
2007                if (delta > (2 * HZ))
2008                        delta = 0;
2009
2010                set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2011                queue_delayed_work(cnic_wq, &cp->delete_task, delta);
2012                goto destroy_reply;
2013        }
2014
2015        ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
2016
2017skip_cfc_delete:
2018        cnic_free_bnx2x_conn_resc(dev, l5_cid);
2019
2020        if (!ret) {
2021                atomic_dec(&cp->iscsi_conn);
2022                clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2023        }
2024
2025destroy_reply:
2026        memset(&kcqe, 0, sizeof(kcqe));
2027        kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
2028        kcqe.iscsi_conn_id = l5_cid;
2029        kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
2030        kcqe.iscsi_conn_context_id = req->context_id;
2031
2032        cqes[0] = (struct kcqe *) &kcqe;
2033        cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
2034
2035        return 0;
2036}
2037
2038static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
2039                                      struct l4_kwq_connect_req1 *kwqe1,
2040                                      struct l4_kwq_connect_req3 *kwqe3,
2041                                      struct l5cm_active_conn_buffer *conn_buf)
2042{
2043        struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
2044        struct l5cm_xstorm_conn_buffer *xstorm_buf =
2045                &conn_buf->xstorm_conn_buffer;
2046        struct l5cm_tstorm_conn_buffer *tstorm_buf =
2047                &conn_buf->tstorm_conn_buffer;
2048        struct regpair context_addr;
2049        u32 cid = BNX2X_SW_CID(kwqe1->cid);
2050        struct in6_addr src_ip, dst_ip;
2051        int i;
2052        u32 *addrp;
2053
2054        addrp = (u32 *) &conn_addr->local_ip_addr;
2055        for (i = 0; i < 4; i++, addrp++)
2056                src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2057
2058        addrp = (u32 *) &conn_addr->remote_ip_addr;
2059        for (i = 0; i < 4; i++, addrp++)
2060                dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2061
2062        cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
2063
2064        xstorm_buf->context_addr.hi = context_addr.hi;
2065        xstorm_buf->context_addr.lo = context_addr.lo;
2066        xstorm_buf->mss = 0xffff;
2067        xstorm_buf->rcv_buf = kwqe3->rcv_buf;
2068        if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
2069                xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
2070        xstorm_buf->pseudo_header_checksum =
2071                swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
2072
2073        if (kwqe3->ka_timeout) {
2074                tstorm_buf->ka_enable = 1;
2075                tstorm_buf->ka_timeout = kwqe3->ka_timeout;
2076                tstorm_buf->ka_interval = kwqe3->ka_interval;
2077                tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
2078        }
2079        tstorm_buf->max_rt_time = 0xffffffff;
2080}
2081
2082static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2083{
2084        struct bnx2x *bp = netdev_priv(dev->netdev);
2085        u32 pfid = bp->pfid;
2086        u8 *mac = dev->mac_addr;
2087
2088        CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2089                 XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2090        CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2091                 XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2092        CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2093                 XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2094        CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2095                 XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2096        CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2097                 XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2098        CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2099                 XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2100
2101        CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2102                 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2103        CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2104                 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2105                 mac[4]);
2106        CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2107                 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2108        CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2109                 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2110                 mac[2]);
2111        CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2112                 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2113        CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2114                 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2115                 mac[0]);
2116}
2117
2118static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2119                              u32 num, int *work)
2120{
2121        struct cnic_local *cp = dev->cnic_priv;
2122        struct bnx2x *bp = netdev_priv(dev->netdev);
2123        struct l4_kwq_connect_req1 *kwqe1 =
2124                (struct l4_kwq_connect_req1 *) wqes[0];
2125        struct l4_kwq_connect_req3 *kwqe3;
2126        struct l5cm_active_conn_buffer *conn_buf;
2127        struct l5cm_conn_addr_params *conn_addr;
2128        union l5cm_specific_data l5_data;
2129        u32 l5_cid = kwqe1->pg_cid;
2130        struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2131        struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2132        int ret;
2133
2134        if (num < 2) {
2135                *work = num;
2136                return -EINVAL;
2137        }
2138
2139        if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2140                *work = 3;
2141        else
2142                *work = 2;
2143
2144        if (num < *work) {
2145                *work = num;
2146                return -EINVAL;
2147        }
2148
2149        if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2150                netdev_err(dev->netdev, "conn_buf size too big\n");
2151                return -ENOMEM;
2152        }
2153        conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2154        if (!conn_buf)
2155                return -ENOMEM;
2156
2157        memset(conn_buf, 0, sizeof(*conn_buf));
2158
2159        conn_addr = &conn_buf->conn_addr_buf;
2160        conn_addr->remote_addr_0 = csk->ha[0];
2161        conn_addr->remote_addr_1 = csk->ha[1];
2162        conn_addr->remote_addr_2 = csk->ha[2];
2163        conn_addr->remote_addr_3 = csk->ha[3];
2164        conn_addr->remote_addr_4 = csk->ha[4];
2165        conn_addr->remote_addr_5 = csk->ha[5];
2166
2167        if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2168                struct l4_kwq_connect_req2 *kwqe2 =
2169                        (struct l4_kwq_connect_req2 *) wqes[1];
2170
2171                conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2172                conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2173                conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2174
2175                conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2176                conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2177                conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2178                conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2179        }
2180        kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2181
2182        conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2183        conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2184        conn_addr->local_tcp_port = kwqe1->src_port;
2185        conn_addr->remote_tcp_port = kwqe1->dst_port;
2186
2187        conn_addr->pmtu = kwqe3->pmtu;
2188        cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2189
2190        CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2191                  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(bp->pfid), csk->vlan_id);
2192
2193        ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2194                        kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2195        if (!ret)
2196                set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2197
2198        return ret;
2199}
2200
2201static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2202{
2203        struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2204        union l5cm_specific_data l5_data;
2205        int ret;
2206
2207        memset(&l5_data, 0, sizeof(l5_data));
2208        ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2209                        req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2210        return ret;
2211}
2212
2213static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2214{
2215        struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2216        union l5cm_specific_data l5_data;
2217        int ret;
2218
2219        memset(&l5_data, 0, sizeof(l5_data));
2220        ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2221                        req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2222        return ret;
2223}
2224static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2225{
2226        struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2227        struct l4_kcq kcqe;
2228        struct kcqe *cqes[1];
2229
2230        memset(&kcqe, 0, sizeof(kcqe));
2231        kcqe.pg_host_opaque = req->host_opaque;
2232        kcqe.pg_cid = req->host_opaque;
2233        kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2234        cqes[0] = (struct kcqe *) &kcqe;
2235        cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2236        return 0;
2237}
2238
2239static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2240{
2241        struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2242        struct l4_kcq kcqe;
2243        struct kcqe *cqes[1];
2244
2245        memset(&kcqe, 0, sizeof(kcqe));
2246        kcqe.pg_host_opaque = req->pg_host_opaque;
2247        kcqe.pg_cid = req->pg_cid;
2248        kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2249        cqes[0] = (struct kcqe *) &kcqe;
2250        cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2251        return 0;
2252}
2253
2254static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2255{
2256        struct fcoe_kwqe_stat *req;
2257        struct fcoe_stat_ramrod_params *fcoe_stat;
2258        union l5cm_specific_data l5_data;
2259        struct cnic_local *cp = dev->cnic_priv;
2260        struct bnx2x *bp = netdev_priv(dev->netdev);
2261        int ret;
2262        u32 cid;
2263
2264        req = (struct fcoe_kwqe_stat *) kwqe;
2265        cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2266
2267        fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2268        if (!fcoe_stat)
2269                return -ENOMEM;
2270
2271        memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2272        memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2273
2274        ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2275                                  FCOE_CONNECTION_TYPE, &l5_data);
2276        return ret;
2277}
2278
2279static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2280                                 u32 num, int *work)
2281{
2282        int ret;
2283        struct cnic_local *cp = dev->cnic_priv;
2284        struct bnx2x *bp = netdev_priv(dev->netdev);
2285        u32 cid;
2286        struct fcoe_init_ramrod_params *fcoe_init;
2287        struct fcoe_kwqe_init1 *req1;
2288        struct fcoe_kwqe_init2 *req2;
2289        struct fcoe_kwqe_init3 *req3;
2290        union l5cm_specific_data l5_data;
2291
2292        if (num < 3) {
2293                *work = num;
2294                return -EINVAL;
2295        }
2296        req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2297        req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2298        req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2299        if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2300                *work = 1;
2301                return -EINVAL;
2302        }
2303        if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2304                *work = 2;
2305                return -EINVAL;
2306        }
2307
2308        if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2309                netdev_err(dev->netdev, "fcoe_init size too big\n");
2310                return -ENOMEM;
2311        }
2312        fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2313        if (!fcoe_init)
2314                return -ENOMEM;
2315
2316        memset(fcoe_init, 0, sizeof(*fcoe_init));
2317        memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2318        memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2319        memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2320        fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2321        fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2322        fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2323
2324        fcoe_init->sb_num = cp->status_blk_num;
2325        fcoe_init->eq_prod = MAX_KCQ_IDX;
2326        fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2327        cp->kcq2.sw_prod_idx = 0;
2328
2329        cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2330        ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2331                                  FCOE_CONNECTION_TYPE, &l5_data);
2332        *work = 3;
2333        return ret;
2334}
2335
2336static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2337                                 u32 num, int *work)
2338{
2339        int ret = 0;
2340        u32 cid = -1, l5_cid;
2341        struct cnic_local *cp = dev->cnic_priv;
2342        struct bnx2x *bp = netdev_priv(dev->netdev);
2343        struct fcoe_kwqe_conn_offload1 *req1;
2344        struct fcoe_kwqe_conn_offload2 *req2;
2345        struct fcoe_kwqe_conn_offload3 *req3;
2346        struct fcoe_kwqe_conn_offload4 *req4;
2347        struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2348        struct cnic_context *ctx;
2349        struct fcoe_context *fctx;
2350        struct regpair ctx_addr;
2351        union l5cm_specific_data l5_data;
2352        struct fcoe_kcqe kcqe;
2353        struct kcqe *cqes[1];
2354
2355        if (num < 4) {
2356                *work = num;
2357                return -EINVAL;
2358        }
2359        req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2360        req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2361        req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2362        req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2363
2364        *work = 4;
2365
2366        l5_cid = req1->fcoe_conn_id;
2367        if (l5_cid >= dev->max_fcoe_conn)
2368                goto err_reply;
2369
2370        l5_cid += BNX2X_FCOE_L5_CID_BASE;
2371
2372        ctx = &cp->ctx_tbl[l5_cid];
2373        if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2374                goto err_reply;
2375
2376        ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2377        if (ret) {
2378                ret = 0;
2379                goto err_reply;
2380        }
2381        cid = ctx->cid;
2382
2383        fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2384        if (fctx) {
2385                u32 hw_cid = BNX2X_HW_CID(bp, cid);
2386                u32 val;
2387
2388                val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2389                                             FCOE_CONNECTION_TYPE);
2390                fctx->xstorm_ag_context.cdu_reserved = val;
2391                val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2392                                             FCOE_CONNECTION_TYPE);
2393                fctx->ustorm_ag_context.cdu_usage = val;
2394        }
2395        if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2396                netdev_err(dev->netdev, "fcoe_offload size too big\n");
2397                goto err_reply;
2398        }
2399        fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2400        if (!fcoe_offload)
2401                goto err_reply;
2402
2403        memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2404        memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2405        memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2406        memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2407        memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2408
2409        cid = BNX2X_HW_CID(bp, cid);
2410        ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2411                                  FCOE_CONNECTION_TYPE, &l5_data);
2412        if (!ret)
2413                set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2414
2415        return ret;
2416
2417err_reply:
2418        if (cid != -1)
2419                cnic_free_bnx2x_conn_resc(dev, l5_cid);
2420
2421        memset(&kcqe, 0, sizeof(kcqe));
2422        kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2423        kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2424        kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2425
2426        cqes[0] = (struct kcqe *) &kcqe;
2427        cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2428        return ret;
2429}
2430
2431static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2432{
2433        struct fcoe_kwqe_conn_enable_disable *req;
2434        struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2435        union l5cm_specific_data l5_data;
2436        int ret;
2437        u32 cid, l5_cid;
2438        struct cnic_local *cp = dev->cnic_priv;
2439
2440        req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2441        cid = req->context_id;
2442        l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2443
2444        if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2445                netdev_err(dev->netdev, "fcoe_enable size too big\n");
2446                return -ENOMEM;
2447        }
2448        fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2449        if (!fcoe_enable)
2450                return -ENOMEM;
2451
2452        memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2453        memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2454        ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2455                                  FCOE_CONNECTION_TYPE, &l5_data);
2456        return ret;
2457}
2458
2459static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2460{
2461        struct fcoe_kwqe_conn_enable_disable *req;
2462        struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2463        union l5cm_specific_data l5_data;
2464        int ret;
2465        u32 cid, l5_cid;
2466        struct cnic_local *cp = dev->cnic_priv;
2467
2468        req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2469        cid = req->context_id;
2470        l5_cid = req->conn_id;
2471        if (l5_cid >= dev->max_fcoe_conn)
2472                return -EINVAL;
2473
2474        l5_cid += BNX2X_FCOE_L5_CID_BASE;
2475
2476        if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2477                netdev_err(dev->netdev, "fcoe_disable size too big\n");
2478                return -ENOMEM;
2479        }
2480        fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2481        if (!fcoe_disable)
2482                return -ENOMEM;
2483
2484        memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2485        memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2486        ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2487                                  FCOE_CONNECTION_TYPE, &l5_data);
2488        return ret;
2489}
2490
2491static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2492{
2493        struct fcoe_kwqe_conn_destroy *req;
2494        union l5cm_specific_data l5_data;
2495        int ret;
2496        u32 cid, l5_cid;
2497        struct cnic_local *cp = dev->cnic_priv;
2498        struct cnic_context *ctx;
2499        struct fcoe_kcqe kcqe;
2500        struct kcqe *cqes[1];
2501
2502        req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2503        cid = req->context_id;
2504        l5_cid = req->conn_id;
2505        if (l5_cid >= dev->max_fcoe_conn)
2506                return -EINVAL;
2507
2508        l5_cid += BNX2X_FCOE_L5_CID_BASE;
2509
2510        ctx = &cp->ctx_tbl[l5_cid];
2511
2512        init_waitqueue_head(&ctx->waitq);
2513        ctx->wait_cond = 0;
2514
2515        memset(&kcqe, 0, sizeof(kcqe));
2516        kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2517        memset(&l5_data, 0, sizeof(l5_data));
2518        ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2519                                  FCOE_CONNECTION_TYPE, &l5_data);
2520        if (ret == 0) {
2521                wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2522                if (ctx->wait_cond)
2523                        kcqe.completion_status = 0;
2524        }
2525
2526        set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2527        queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2528
2529        kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2530        kcqe.fcoe_conn_id = req->conn_id;
2531        kcqe.fcoe_conn_context_id = cid;
2532
2533        cqes[0] = (struct kcqe *) &kcqe;
2534        cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2535        return ret;
2536}
2537
2538static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2539{
2540        struct cnic_local *cp = dev->cnic_priv;
2541        u32 i;
2542
2543        for (i = start_cid; i < cp->max_cid_space; i++) {
2544                struct cnic_context *ctx = &cp->ctx_tbl[i];
2545                int j;
2546
2547                while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2548                        msleep(10);
2549
2550                for (j = 0; j < 5; j++) {
2551                        if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2552                                break;
2553                        msleep(20);
2554                }
2555
2556                if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2557                        netdev_warn(dev->netdev, "CID %x not deleted\n",
2558                                   ctx->cid);
2559        }
2560}
2561
2562static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2563{
2564        union l5cm_specific_data l5_data;
2565        struct cnic_local *cp = dev->cnic_priv;
2566        struct bnx2x *bp = netdev_priv(dev->netdev);
2567        int ret;
2568        u32 cid;
2569
2570        cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2571
2572        cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2573
2574        memset(&l5_data, 0, sizeof(l5_data));
2575        ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2576                                  FCOE_CONNECTION_TYPE, &l5_data);
2577        return ret;
2578}
2579
2580static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2581{
2582        struct cnic_local *cp = dev->cnic_priv;
2583        struct kcqe kcqe;
2584        struct kcqe *cqes[1];
2585        u32 cid;
2586        u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2587        u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2588        u32 kcqe_op;
2589        int ulp_type;
2590
2591        cid = kwqe->kwqe_info0;
2592        memset(&kcqe, 0, sizeof(kcqe));
2593
2594        if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2595                u32 l5_cid = 0;
2596
2597                ulp_type = CNIC_ULP_FCOE;
2598                if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2599                        struct fcoe_kwqe_conn_enable_disable *req;
2600
2601                        req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2602                        kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2603                        cid = req->context_id;
2604                        l5_cid = req->conn_id;
2605                } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2606                        kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2607                } else {
2608                        return;
2609                }
2610                kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2611                kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2612                kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2613                kcqe.kcqe_info2 = cid;
2614                kcqe.kcqe_info0 = l5_cid;
2615
2616        } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2617                ulp_type = CNIC_ULP_ISCSI;
2618                if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2619                        cid = kwqe->kwqe_info1;
2620
2621                kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2622                kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2623                kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2624                kcqe.kcqe_info2 = cid;
2625                cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2626
2627        } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2628                struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2629
2630                ulp_type = CNIC_ULP_L4;
2631                if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2632                        kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2633                else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2634                        kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2635                else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2636                        kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2637                else
2638                        return;
2639
2640                kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2641                                    KCQE_FLAGS_LAYER_MASK_L4;
2642                l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2643                l4kcqe->cid = cid;
2644                cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2645        } else {
2646                return;
2647        }
2648
2649        cqes[0] = &kcqe;
2650        cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2651}
2652
2653static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2654                                         struct kwqe *wqes[], u32 num_wqes)
2655{
2656        int i, work, ret;
2657        u32 opcode;
2658        struct kwqe *kwqe;
2659
2660        if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2661                return -EAGAIN;         /* bnx2 is down */
2662
2663        for (i = 0; i < num_wqes; ) {
2664                kwqe = wqes[i];
2665                opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2666                work = 1;
2667
2668                switch (opcode) {
2669                case ISCSI_KWQE_OPCODE_INIT1:
2670                        ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2671                        break;
2672                case ISCSI_KWQE_OPCODE_INIT2:
2673                        ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2674                        break;
2675                case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2676                        ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2677                                                     num_wqes - i, &work);
2678                        break;
2679                case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2680                        ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2681                        break;
2682                case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2683                        ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2684                        break;
2685                case L4_KWQE_OPCODE_VALUE_CONNECT1:
2686                        ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2687                                                 &work);
2688                        break;
2689                case L4_KWQE_OPCODE_VALUE_CLOSE:
2690                        ret = cnic_bnx2x_close(dev, kwqe);
2691                        break;
2692                case L4_KWQE_OPCODE_VALUE_RESET:
2693                        ret = cnic_bnx2x_reset(dev, kwqe);
2694                        break;
2695                case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2696                        ret = cnic_bnx2x_offload_pg(dev, kwqe);
2697                        break;
2698                case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2699                        ret = cnic_bnx2x_update_pg(dev, kwqe);
2700                        break;
2701                case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2702                        ret = 0;
2703                        break;
2704                default:
2705                        ret = 0;
2706                        netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2707                                   opcode);
2708                        break;
2709                }
2710                if (ret < 0) {
2711                        netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2712                                   opcode);
2713
2714                        /* Possibly bnx2x parity error, send completion
2715                         * to ulp drivers with error code to speed up
2716                         * cleanup and reset recovery.
2717                         */
2718                        if (ret == -EIO || ret == -EAGAIN)
2719                                cnic_bnx2x_kwqe_err(dev, kwqe);
2720                }
2721                i += work;
2722        }
2723        return 0;
2724}
2725
2726static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2727                                        struct kwqe *wqes[], u32 num_wqes)
2728{
2729        struct bnx2x *bp = netdev_priv(dev->netdev);
2730        int i, work, ret;
2731        u32 opcode;
2732        struct kwqe *kwqe;
2733
2734        if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2735                return -EAGAIN;         /* bnx2 is down */
2736
2737        if (!BNX2X_CHIP_IS_E2_PLUS(bp))
2738                return -EINVAL;
2739
2740        for (i = 0; i < num_wqes; ) {
2741                kwqe = wqes[i];
2742                opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2743                work = 1;
2744
2745                switch (opcode) {
2746                case FCOE_KWQE_OPCODE_INIT1:
2747                        ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2748                                                    num_wqes - i, &work);
2749                        break;
2750                case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2751                        ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2752                                                    num_wqes - i, &work);
2753                        break;
2754                case FCOE_KWQE_OPCODE_ENABLE_CONN:
2755                        ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2756                        break;
2757                case FCOE_KWQE_OPCODE_DISABLE_CONN:
2758                        ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2759                        break;
2760                case FCOE_KWQE_OPCODE_DESTROY_CONN:
2761                        ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2762                        break;
2763                case FCOE_KWQE_OPCODE_DESTROY:
2764                        ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2765                        break;
2766                case FCOE_KWQE_OPCODE_STAT:
2767                        ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2768                        break;
2769                default:
2770                        ret = 0;
2771                        netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2772                                   opcode);
2773                        break;
2774                }
2775                if (ret < 0) {
2776                        netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2777                                   opcode);
2778
2779                        /* Possibly bnx2x parity error, send completion
2780                         * to ulp drivers with error code to speed up
2781                         * cleanup and reset recovery.
2782                         */
2783                        if (ret == -EIO || ret == -EAGAIN)
2784                                cnic_bnx2x_kwqe_err(dev, kwqe);
2785                }
2786                i += work;
2787        }
2788        return 0;
2789}
2790
2791static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2792                                   u32 num_wqes)
2793{
2794        int ret = -EINVAL;
2795        u32 layer_code;
2796
2797        if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2798                return -EAGAIN;         /* bnx2x is down */
2799
2800        if (!num_wqes)
2801                return 0;
2802
2803        layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2804        switch (layer_code) {
2805        case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2806        case KWQE_FLAGS_LAYER_MASK_L4:
2807        case KWQE_FLAGS_LAYER_MASK_L2:
2808                ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2809                break;
2810
2811        case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2812                ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2813                break;
2814        }
2815        return ret;
2816}
2817
2818static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2819{
2820        if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2821                return KCQE_FLAGS_LAYER_MASK_L4;
2822
2823        return opflag & KCQE_FLAGS_LAYER_MASK;
2824}
2825
2826static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2827{
2828        struct cnic_local *cp = dev->cnic_priv;
2829        int i, j, comp = 0;
2830
2831        i = 0;
2832        j = 1;
2833        while (num_cqes) {
2834                struct cnic_ulp_ops *ulp_ops;
2835                int ulp_type;
2836                u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2837                u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2838
2839                if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2840                        comp++;
2841
2842                while (j < num_cqes) {
2843                        u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2844
2845                        if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2846                                break;
2847
2848                        if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2849                                comp++;
2850                        j++;
2851                }
2852
2853                if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2854                        ulp_type = CNIC_ULP_RDMA;
2855                else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2856                        ulp_type = CNIC_ULP_ISCSI;
2857                else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2858                        ulp_type = CNIC_ULP_FCOE;
2859                else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2860                        ulp_type = CNIC_ULP_L4;
2861                else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2862                        goto end;
2863                else {
2864                        netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2865                                   kcqe_op_flag);
2866                        goto end;
2867                }
2868
2869                rcu_read_lock();
2870                ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2871                if (likely(ulp_ops)) {
2872                        ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2873                                                  cp->completed_kcq + i, j);
2874                }
2875                rcu_read_unlock();
2876end:
2877                num_cqes -= j;
2878                i += j;
2879                j = 1;
2880        }
2881        if (unlikely(comp))
2882                cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2883}
2884
2885static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2886{
2887        struct cnic_local *cp = dev->cnic_priv;
2888        u16 i, ri, hw_prod, last;
2889        struct kcqe *kcqe;
2890        int kcqe_cnt = 0, last_cnt = 0;
2891
2892        i = ri = last = info->sw_prod_idx;
2893        ri &= MAX_KCQ_IDX;
2894        hw_prod = *info->hw_prod_idx_ptr;
2895        hw_prod = info->hw_idx(hw_prod);
2896
2897        while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2898                kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2899                cp->completed_kcq[kcqe_cnt++] = kcqe;
2900                i = info->next_idx(i);
2901                ri = i & MAX_KCQ_IDX;
2902                if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2903                        last_cnt = kcqe_cnt;
2904                        last = i;
2905                }
2906        }
2907
2908        info->sw_prod_idx = last;
2909        return last_cnt;
2910}
2911
2912static int cnic_l2_completion(struct cnic_local *cp)
2913{
2914        u16 hw_cons, sw_cons;
2915        struct cnic_uio_dev *udev = cp->udev;
2916        union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2917                                        (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
2918        u32 cmd;
2919        int comp = 0;
2920
2921        if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2922                return 0;
2923
2924        hw_cons = *cp->rx_cons_ptr;
2925        if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2926                hw_cons++;
2927
2928        sw_cons = cp->rx_cons;
2929        while (sw_cons != hw_cons) {
2930                u8 cqe_fp_flags;
2931
2932                cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2933                cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2934                if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2935                        cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2936                        cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2937                        if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2938                            cmd == RAMROD_CMD_ID_ETH_HALT)
2939                                comp++;
2940                }
2941                sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2942        }
2943        return comp;
2944}
2945
2946static void cnic_chk_pkt_rings(struct cnic_local *cp)
2947{
2948        u16 rx_cons, tx_cons;
2949        int comp = 0;
2950
2951        if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2952                return;
2953
2954        rx_cons = *cp->rx_cons_ptr;
2955        tx_cons = *cp->tx_cons_ptr;
2956        if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2957                if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2958                        comp = cnic_l2_completion(cp);
2959
2960                cp->tx_cons = tx_cons;
2961                cp->rx_cons = rx_cons;
2962
2963                if (cp->udev)
2964                        uio_event_notify(&cp->udev->cnic_uinfo);
2965        }
2966        if (comp)
2967                clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2968}
2969
2970static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2971{
2972        struct cnic_local *cp = dev->cnic_priv;
2973        u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2974        int kcqe_cnt;
2975
2976        /* status block index must be read before reading other fields */
2977        rmb();
2978        cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2979
2980        while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2981
2982                service_kcqes(dev, kcqe_cnt);
2983
2984                /* Tell compiler that status_blk fields can change. */
2985                barrier();
2986                status_idx = (u16) *cp->kcq1.status_idx_ptr;
2987                /* status block index must be read first */
2988                rmb();
2989                cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2990        }
2991
2992        CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2993
2994        cnic_chk_pkt_rings(cp);
2995
2996        return status_idx;
2997}
2998
2999static int cnic_service_bnx2(void *data, void *status_blk)
3000{
3001        struct cnic_dev *dev = data;
3002
3003        if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3004                struct status_block *sblk = status_blk;
3005
3006                return sblk->status_idx;
3007        }
3008
3009        return cnic_service_bnx2_queues(dev);
3010}
3011
3012static void cnic_service_bnx2_msix(unsigned long data)
3013{
3014        struct cnic_dev *dev = (struct cnic_dev *) data;
3015        struct cnic_local *cp = dev->cnic_priv;
3016
3017        cp->last_status_idx = cnic_service_bnx2_queues(dev);
3018
3019        CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3020                BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3021}
3022
3023static void cnic_doirq(struct cnic_dev *dev)
3024{
3025        struct cnic_local *cp = dev->cnic_priv;
3026
3027        if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3028                u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
3029
3030                prefetch(cp->status_blk.gen);
3031                prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
3032
3033                tasklet_schedule(&cp->cnic_irq_task);
3034        }
3035}
3036
3037static irqreturn_t cnic_irq(int irq, void *dev_instance)
3038{
3039        struct cnic_dev *dev = dev_instance;
3040        struct cnic_local *cp = dev->cnic_priv;
3041
3042        if (cp->ack_int)
3043                cp->ack_int(dev);
3044
3045        cnic_doirq(dev);
3046
3047        return IRQ_HANDLED;
3048}
3049
3050static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
3051                                      u16 index, u8 op, u8 update)
3052{
3053        struct bnx2x *bp = netdev_priv(dev->netdev);
3054        u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp) * 32 +
3055                       COMMAND_REG_INT_ACK);
3056        struct igu_ack_register igu_ack;
3057
3058        igu_ack.status_block_index = index;
3059        igu_ack.sb_id_and_flags =
3060                        ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
3061                         (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3062                         (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3063                         (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3064
3065        CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3066}
3067
3068static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3069                            u16 index, u8 op, u8 update)
3070{
3071        struct igu_regular cmd_data;
3072        u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3073
3074        cmd_data.sb_id_and_flags =
3075                (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3076                (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3077                (update << IGU_REGULAR_BUPDATE_SHIFT) |
3078                (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3079
3080
3081        CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3082}
3083
3084static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3085{
3086        struct cnic_local *cp = dev->cnic_priv;
3087
3088        cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3089                           IGU_INT_DISABLE, 0);
3090}
3091
3092static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3093{
3094        struct cnic_local *cp = dev->cnic_priv;
3095
3096        cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3097                        IGU_INT_DISABLE, 0);
3098}
3099
3100static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
3101{
3102        struct cnic_local *cp = dev->cnic_priv;
3103
3104        cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
3105                           IGU_INT_ENABLE, 1);
3106}
3107
3108static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
3109{
3110        struct cnic_local *cp = dev->cnic_priv;
3111
3112        cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
3113                        IGU_INT_ENABLE, 1);
3114}
3115
3116static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3117{
3118        u32 last_status = *info->status_idx_ptr;
3119        int kcqe_cnt;
3120
3121        /* status block index must be read before reading the KCQ */
3122        rmb();
3123        while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3124
3125                service_kcqes(dev, kcqe_cnt);
3126
3127                /* Tell compiler that sblk fields can change. */
3128                barrier();
3129
3130                last_status = *info->status_idx_ptr;
3131                /* status block index must be read before reading the KCQ */
3132                rmb();
3133        }
3134        return last_status;
3135}
3136
3137static void cnic_service_bnx2x_bh(unsigned long data)
3138{
3139        struct cnic_dev *dev = (struct cnic_dev *) data;
3140        struct cnic_local *cp = dev->cnic_priv;
3141        struct bnx2x *bp = netdev_priv(dev->netdev);
3142        u32 status_idx, new_status_idx;
3143
3144        if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3145                return;
3146
3147        while (1) {
3148                status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3149
3150                CNIC_WR16(dev, cp->kcq1.io_addr,
3151                          cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3152
3153                if (!CNIC_SUPPORTS_FCOE(bp)) {
3154                        cp->arm_int(dev, status_idx);
3155                        break;
3156                }
3157
3158                new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3159
3160                if (new_status_idx != status_idx)
3161                        continue;
3162
3163                CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3164                          MAX_KCQ_IDX);
3165
3166                cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3167                                status_idx, IGU_INT_ENABLE, 1);
3168
3169                break;
3170        }
3171}
3172
3173static int cnic_service_bnx2x(void *data, void *status_blk)
3174{
3175        struct cnic_dev *dev = data;
3176        struct cnic_local *cp = dev->cnic_priv;
3177
3178        if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3179                cnic_doirq(dev);
3180
3181        cnic_chk_pkt_rings(cp);
3182
3183        return 0;
3184}
3185
3186static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3187{
3188        struct cnic_ulp_ops *ulp_ops;
3189
3190        if (if_type == CNIC_ULP_ISCSI)
3191                cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3192
3193        mutex_lock(&cnic_lock);
3194        ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3195                                            lockdep_is_held(&cnic_lock));
3196        if (!ulp_ops) {
3197                mutex_unlock(&cnic_lock);
3198                return;
3199        }
3200        set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3201        mutex_unlock(&cnic_lock);
3202
3203        if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3204                ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3205
3206        clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3207}
3208
3209static void cnic_ulp_stop(struct cnic_dev *dev)
3210{
3211        struct cnic_local *cp = dev->cnic_priv;
3212        int if_type;
3213
3214        for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3215                cnic_ulp_stop_one(cp, if_type);
3216}
3217
3218static void cnic_ulp_start(struct cnic_dev *dev)
3219{
3220        struct cnic_local *cp = dev->cnic_priv;
3221        int if_type;
3222
3223        for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3224                struct cnic_ulp_ops *ulp_ops;
3225
3226                mutex_lock(&cnic_lock);
3227                ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3228                                                    lockdep_is_held(&cnic_lock));
3229                if (!ulp_ops || !ulp_ops->cnic_start) {
3230                        mutex_unlock(&cnic_lock);
3231                        continue;
3232                }
3233                set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3234                mutex_unlock(&cnic_lock);
3235
3236                if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3237                        ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3238
3239                clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3240        }
3241}
3242
3243static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3244{
3245        struct cnic_local *cp = dev->cnic_priv;
3246        struct cnic_ulp_ops *ulp_ops;
3247        int rc;
3248
3249        mutex_lock(&cnic_lock);
3250        ulp_ops = rcu_dereference_protected(cp->ulp_ops[ulp_type],
3251                                            lockdep_is_held(&cnic_lock));
3252        if (ulp_ops && ulp_ops->cnic_get_stats)
3253                rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3254        else
3255                rc = -ENODEV;
3256        mutex_unlock(&cnic_lock);
3257        return rc;
3258}
3259
3260static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3261{
3262        struct cnic_dev *dev = data;
3263        int ulp_type = CNIC_ULP_ISCSI;
3264
3265        switch (info->cmd) {
3266        case CNIC_CTL_STOP_CMD:
3267                cnic_hold(dev);
3268
3269                cnic_ulp_stop(dev);
3270                cnic_stop_hw(dev);
3271
3272                cnic_put(dev);
3273                break;
3274        case CNIC_CTL_START_CMD:
3275                cnic_hold(dev);
3276
3277                if (!cnic_start_hw(dev))
3278                        cnic_ulp_start(dev);
3279
3280                cnic_put(dev);
3281                break;
3282        case CNIC_CTL_STOP_ISCSI_CMD: {
3283                struct cnic_local *cp = dev->cnic_priv;
3284                set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3285                queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3286                break;
3287        }
3288        case CNIC_CTL_COMPLETION_CMD: {
3289                struct cnic_ctl_completion *comp = &info->data.comp;
3290                u32 cid = BNX2X_SW_CID(comp->cid);
3291                u32 l5_cid;
3292                struct cnic_local *cp = dev->cnic_priv;
3293
3294                if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
3295                        break;
3296
3297                if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3298                        struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3299
3300                        if (unlikely(comp->error)) {
3301                                set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3302                                netdev_err(dev->netdev,
3303                                           "CID %x CFC delete comp error %x\n",
3304                                           cid, comp->error);
3305                        }
3306
3307                        ctx->wait_cond = 1;
3308                        wake_up(&ctx->waitq);
3309                }
3310                break;
3311        }
3312        case CNIC_CTL_FCOE_STATS_GET_CMD:
3313                ulp_type = CNIC_ULP_FCOE;
3314                /* fall through */
3315        case CNIC_CTL_ISCSI_STATS_GET_CMD:
3316                cnic_hold(dev);
3317                cnic_copy_ulp_stats(dev, ulp_type);
3318                cnic_put(dev);
3319                break;
3320
3321        default:
3322                return -EINVAL;
3323        }
3324        return 0;
3325}
3326
3327static void cnic_ulp_init(struct cnic_dev *dev)
3328{
3329        int i;
3330        struct cnic_local *cp = dev->cnic_priv;
3331
3332        for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3333                struct cnic_ulp_ops *ulp_ops;
3334
3335                mutex_lock(&cnic_lock);
3336                ulp_ops = cnic_ulp_tbl_prot(i);
3337                if (!ulp_ops || !ulp_ops->cnic_init) {
3338                        mutex_unlock(&cnic_lock);
3339                        continue;
3340                }
3341                ulp_get(ulp_ops);
3342                mutex_unlock(&cnic_lock);
3343
3344                if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3345                        ulp_ops->cnic_init(dev);
3346
3347                ulp_put(ulp_ops);
3348        }
3349}
3350
3351static void cnic_ulp_exit(struct cnic_dev *dev)
3352{
3353        int i;
3354        struct cnic_local *cp = dev->cnic_priv;
3355
3356        for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3357                struct cnic_ulp_ops *ulp_ops;
3358
3359                mutex_lock(&cnic_lock);
3360                ulp_ops = cnic_ulp_tbl_prot(i);
3361                if (!ulp_ops || !ulp_ops->cnic_exit) {
3362                        mutex_unlock(&cnic_lock);
3363                        continue;
3364                }
3365                ulp_get(ulp_ops);
3366                mutex_unlock(&cnic_lock);
3367
3368                if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3369                        ulp_ops->cnic_exit(dev);
3370
3371                ulp_put(ulp_ops);
3372        }
3373}
3374
3375static int cnic_cm_offload_pg(struct cnic_sock *csk)
3376{
3377        struct cnic_dev *dev = csk->dev;
3378        struct l4_kwq_offload_pg *l4kwqe;
3379        struct kwqe *wqes[1];
3380
3381        l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3382        memset(l4kwqe, 0, sizeof(*l4kwqe));
3383        wqes[0] = (struct kwqe *) l4kwqe;
3384
3385        l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3386        l4kwqe->flags =
3387                L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3388        l4kwqe->l2hdr_nbytes = ETH_HLEN;
3389
3390        l4kwqe->da0 = csk->ha[0];
3391        l4kwqe->da1 = csk->ha[1];
3392        l4kwqe->da2 = csk->ha[2];
3393        l4kwqe->da3 = csk->ha[3];
3394        l4kwqe->da4 = csk->ha[4];
3395        l4kwqe->da5 = csk->ha[5];
3396
3397        l4kwqe->sa0 = dev->mac_addr[0];
3398        l4kwqe->sa1 = dev->mac_addr[1];
3399        l4kwqe->sa2 = dev->mac_addr[2];
3400        l4kwqe->sa3 = dev->mac_addr[3];
3401        l4kwqe->sa4 = dev->mac_addr[4];
3402        l4kwqe->sa5 = dev->mac_addr[5];
3403
3404        l4kwqe->etype = ETH_P_IP;
3405        l4kwqe->ipid_start = DEF_IPID_START;
3406        l4kwqe->host_opaque = csk->l5_cid;
3407
3408        if (csk->vlan_id) {
3409                l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3410                l4kwqe->vlan_tag = csk->vlan_id;
3411                l4kwqe->l2hdr_nbytes += 4;
3412        }
3413
3414        return dev->submit_kwqes(dev, wqes, 1);
3415}
3416
3417static int cnic_cm_update_pg(struct cnic_sock *csk)
3418{
3419        struct cnic_dev *dev = csk->dev;
3420        struct l4_kwq_update_pg *l4kwqe;
3421        struct kwqe *wqes[1];
3422
3423        l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3424        memset(l4kwqe, 0, sizeof(*l4kwqe));
3425        wqes[0] = (struct kwqe *) l4kwqe;
3426
3427        l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3428        l4kwqe->flags =
3429                L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3430        l4kwqe->pg_cid = csk->pg_cid;
3431
3432        l4kwqe->da0 = csk->ha[0];
3433        l4kwqe->da1 = csk->ha[1];
3434        l4kwqe->da2 = csk->ha[2];
3435        l4kwqe->da3 = csk->ha[3];
3436        l4kwqe->da4 = csk->ha[4];
3437        l4kwqe->da5 = csk->ha[5];
3438
3439        l4kwqe->pg_host_opaque = csk->l5_cid;
3440        l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3441
3442        return dev->submit_kwqes(dev, wqes, 1);
3443}
3444
3445static int cnic_cm_upload_pg(struct cnic_sock *csk)
3446{
3447        struct cnic_dev *dev = csk->dev;
3448        struct l4_kwq_upload *l4kwqe;
3449        struct kwqe *wqes[1];
3450
3451        l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3452        memset(l4kwqe, 0, sizeof(*l4kwqe));
3453        wqes[0] = (struct kwqe *) l4kwqe;
3454
3455        l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3456        l4kwqe->flags =
3457                L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3458        l4kwqe->cid = csk->pg_cid;
3459
3460        return dev->submit_kwqes(dev, wqes, 1);
3461}
3462
3463static int cnic_cm_conn_req(struct cnic_sock *csk)
3464{
3465        struct cnic_dev *dev = csk->dev;
3466        struct l4_kwq_connect_req1 *l4kwqe1;
3467        struct l4_kwq_connect_req2 *l4kwqe2;
3468        struct l4_kwq_connect_req3 *l4kwqe3;
3469        struct kwqe *wqes[3];
3470        u8 tcp_flags = 0;
3471        int num_wqes = 2;
3472
3473        l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3474        l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3475        l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3476        memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3477        memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3478        memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3479
3480        l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3481        l4kwqe3->flags =
3482                L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3483        l4kwqe3->ka_timeout = csk->ka_timeout;
3484        l4kwqe3->ka_interval = csk->ka_interval;
3485        l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3486        l4kwqe3->tos = csk->tos;
3487        l4kwqe3->ttl = csk->ttl;
3488        l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3489        l4kwqe3->pmtu = csk->mtu;
3490        l4kwqe3->rcv_buf = csk->rcv_buf;
3491        l4kwqe3->snd_buf = csk->snd_buf;
3492        l4kwqe3->seed = csk->seed;
3493
3494        wqes[0] = (struct kwqe *) l4kwqe1;
3495        if (test_bit(SK_F_IPV6, &csk->flags)) {
3496                wqes[1] = (struct kwqe *) l4kwqe2;
3497                wqes[2] = (struct kwqe *) l4kwqe3;
3498                num_wqes = 3;
3499
3500                l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3501                l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3502                l4kwqe2->flags =
3503                        L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3504                        L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3505                l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3506                l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3507                l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3508                l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3509                l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3510                l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3511                l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3512                               sizeof(struct tcphdr);
3513        } else {
3514                wqes[1] = (struct kwqe *) l4kwqe3;
3515                l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3516                               sizeof(struct tcphdr);
3517        }
3518
3519        l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3520        l4kwqe1->flags =
3521                (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3522                 L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3523        l4kwqe1->cid = csk->cid;
3524        l4kwqe1->pg_cid = csk->pg_cid;
3525        l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3526        l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3527        l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3528        l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3529        if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3530                tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3531        if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3532                tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3533        if (csk->tcp_flags & SK_TCP_NAGLE)
3534                tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3535        if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3536                tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3537        if (csk->tcp_flags & SK_TCP_SACK)
3538                tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3539        if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3540                tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3541
3542        l4kwqe1->tcp_flags = tcp_flags;
3543
3544        return dev->submit_kwqes(dev, wqes, num_wqes);
3545}
3546
3547static int cnic_cm_close_req(struct cnic_sock *csk)
3548{
3549        struct cnic_dev *dev = csk->dev;
3550        struct l4_kwq_close_req *l4kwqe;
3551        struct kwqe *wqes[1];
3552
3553        l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3554        memset(l4kwqe, 0, sizeof(*l4kwqe));
3555        wqes[0] = (struct kwqe *) l4kwqe;
3556
3557        l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3558        l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3559        l4kwqe->cid = csk->cid;
3560
3561        return dev->submit_kwqes(dev, wqes, 1);
3562}
3563
3564static int cnic_cm_abort_req(struct cnic_sock *csk)
3565{
3566        struct cnic_dev *dev = csk->dev;
3567        struct l4_kwq_reset_req *l4kwqe;
3568        struct kwqe *wqes[1];
3569
3570        l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3571        memset(l4kwqe, 0, sizeof(*l4kwqe));
3572        wqes[0] = (struct kwqe *) l4kwqe;
3573
3574        l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3575        l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3576        l4kwqe->cid = csk->cid;
3577
3578        return dev->submit_kwqes(dev, wqes, 1);
3579}
3580
3581static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3582                          u32 l5_cid, struct cnic_sock **csk, void *context)
3583{
3584        struct cnic_local *cp = dev->cnic_priv;
3585        struct cnic_sock *csk1;
3586
3587        if (l5_cid >= MAX_CM_SK_TBL_SZ)
3588                return -EINVAL;
3589
3590        if (cp->ctx_tbl) {
3591                struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3592
3593                if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3594                        return -EAGAIN;
3595        }
3596
3597        csk1 = &cp->csk_tbl[l5_cid];
3598        if (atomic_read(&csk1->ref_count))
3599                return -EAGAIN;
3600
3601        if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3602                return -EBUSY;
3603
3604        csk1->dev = dev;
3605        csk1->cid = cid;
3606        csk1->l5_cid = l5_cid;
3607        csk1->ulp_type = ulp_type;
3608        csk1->context = context;
3609
3610        csk1->ka_timeout = DEF_KA_TIMEOUT;
3611        csk1->ka_interval = DEF_KA_INTERVAL;
3612        csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3613        csk1->tos = DEF_TOS;
3614        csk1->ttl = DEF_TTL;
3615        csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3616        csk1->rcv_buf = DEF_RCV_BUF;
3617        csk1->snd_buf = DEF_SND_BUF;
3618        csk1->seed = DEF_SEED;
3619        csk1->tcp_flags = 0;
3620
3621        *csk = csk1;
3622        return 0;
3623}
3624
3625static void cnic_cm_cleanup(struct cnic_sock *csk)
3626{
3627        if (csk->src_port) {
3628                struct cnic_dev *dev = csk->dev;
3629                struct cnic_local *cp = dev->cnic_priv;
3630
3631                cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3632                csk->src_port = 0;
3633        }
3634}
3635
3636static void cnic_close_conn(struct cnic_sock *csk)
3637{
3638        if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3639                cnic_cm_upload_pg(csk);
3640                clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3641        }
3642        cnic_cm_cleanup(csk);
3643}
3644
3645static int cnic_cm_destroy(struct cnic_sock *csk)
3646{
3647        if (!cnic_in_use(csk))
3648                return -EINVAL;
3649
3650        csk_hold(csk);
3651        clear_bit(SK_F_INUSE, &csk->flags);
3652        smp_mb__after_atomic();
3653        while (atomic_read(&csk->ref_count) != 1)
3654                msleep(1);
3655        cnic_cm_cleanup(csk);
3656
3657        csk->flags = 0;
3658        csk_put(csk);
3659        return 0;
3660}
3661
3662static inline u16 cnic_get_vlan(struct net_device *dev,
3663                                struct net_device **vlan_dev)
3664{
3665        if (is_vlan_dev(dev)) {
3666                *vlan_dev = vlan_dev_real_dev(dev);
3667                return vlan_dev_vlan_id(dev);
3668        }
3669        *vlan_dev = dev;
3670        return 0;
3671}
3672
3673static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3674                             struct dst_entry **dst)
3675{
3676#if defined(CONFIG_INET)
3677        struct rtable *rt;
3678
3679        rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3680        if (!IS_ERR(rt)) {
3681                *dst = &rt->dst;
3682                return 0;
3683        }
3684        return PTR_ERR(rt);
3685#else
3686        return -ENETUNREACH;
3687#endif
3688}
3689
3690static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3691                             struct dst_entry **dst)
3692{
3693#if IS_ENABLED(CONFIG_IPV6)
3694        struct flowi6 fl6;
3695
3696        memset(&fl6, 0, sizeof(fl6));
3697        fl6.daddr = dst_addr->sin6_addr;
3698        if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3699                fl6.flowi6_oif = dst_addr->sin6_scope_id;
3700
3701        *dst = ip6_route_output(&init_net, NULL, &fl6);
3702        if ((*dst)->error) {
3703                dst_release(*dst);
3704                *dst = NULL;
3705                return -ENETUNREACH;
3706        } else
3707                return 0;
3708#endif
3709
3710        return -ENETUNREACH;
3711}
3712
3713static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3714                                           int ulp_type)
3715{
3716        struct cnic_dev *dev = NULL;
3717        struct dst_entry *dst;
3718        struct net_device *netdev = NULL;
3719        int err = -ENETUNREACH;
3720
3721        if (dst_addr->sin_family == AF_INET)
3722                err = cnic_get_v4_route(dst_addr, &dst);
3723        else if (dst_addr->sin_family == AF_INET6) {
3724                struct sockaddr_in6 *dst_addr6 =
3725                        (struct sockaddr_in6 *) dst_addr;
3726
3727                err = cnic_get_v6_route(dst_addr6, &dst);
3728        } else
3729                return NULL;
3730
3731        if (err)
3732                return NULL;
3733
3734        if (!dst->dev)
3735                goto done;
3736
3737        cnic_get_vlan(dst->dev, &netdev);
3738
3739        dev = cnic_from_netdev(netdev);
3740
3741done:
3742        dst_release(dst);
3743        if (dev)
3744                cnic_put(dev);
3745        return dev;
3746}
3747
3748static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3749{
3750        struct cnic_dev *dev = csk->dev;
3751        struct cnic_local *cp = dev->cnic_priv;
3752
3753        return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3754}
3755
3756static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3757{
3758        struct cnic_dev *dev = csk->dev;
3759        struct cnic_local *cp = dev->cnic_priv;
3760        int is_v6, rc = 0;
3761        struct dst_entry *dst = NULL;
3762        struct net_device *realdev;
3763        __be16 local_port;
3764        u32 port_id;
3765
3766        if (saddr->local.v6.sin6_family == AF_INET6 &&
3767            saddr->remote.v6.sin6_family == AF_INET6)
3768                is_v6 = 1;
3769        else if (saddr->local.v4.sin_family == AF_INET &&
3770                 saddr->remote.v4.sin_family == AF_INET)
3771                is_v6 = 0;
3772        else
3773                return -EINVAL;
3774
3775        clear_bit(SK_F_IPV6, &csk->flags);
3776
3777        if (is_v6) {
3778                set_bit(SK_F_IPV6, &csk->flags);
3779                cnic_get_v6_route(&saddr->remote.v6, &dst);
3780
3781                memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3782                       sizeof(struct in6_addr));
3783                csk->dst_port = saddr->remote.v6.sin6_port;
3784                local_port = saddr->local.v6.sin6_port;
3785
3786        } else {
3787                cnic_get_v4_route(&saddr->remote.v4, &dst);
3788
3789                csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3790                csk->dst_port = saddr->remote.v4.sin_port;
3791                local_port = saddr->local.v4.sin_port;
3792        }
3793
3794        csk->vlan_id = 0;
3795        csk->mtu = dev->netdev->mtu;
3796        if (dst && dst->dev) {
3797                u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3798                if (realdev == dev->netdev) {
3799                        csk->vlan_id = vlan;
3800                        csk->mtu = dst_mtu(dst);
3801                }
3802        }
3803
3804        port_id = be16_to_cpu(local_port);
3805        if (port_id >= CNIC_LOCAL_PORT_MIN &&
3806            port_id < CNIC_LOCAL_PORT_MAX) {
3807                if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3808                        port_id = 0;
3809        } else
3810                port_id = 0;
3811
3812        if (!port_id) {
3813                port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3814                if (port_id == -1) {
3815                        rc = -ENOMEM;
3816                        goto err_out;
3817                }
3818                local_port = cpu_to_be16(port_id);
3819        }
3820        csk->src_port = local_port;
3821
3822err_out:
3823        dst_release(dst);
3824        return rc;
3825}
3826
3827static void cnic_init_csk_state(struct cnic_sock *csk)
3828{
3829        csk->state = 0;
3830        clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3831        clear_bit(SK_F_CLOSING, &csk->flags);
3832}
3833
3834static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3835{
3836        struct cnic_local *cp = csk->dev->cnic_priv;
3837        int err = 0;
3838
3839        if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3840                return -EOPNOTSUPP;
3841
3842        if (!cnic_in_use(csk))
3843                return -EINVAL;
3844
3845        if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3846                return -EINVAL;
3847
3848        cnic_init_csk_state(csk);
3849
3850        err = cnic_get_route(csk, saddr);
3851        if (err)
3852                goto err_out;
3853
3854        err = cnic_resolve_addr(csk, saddr);
3855        if (!err)
3856                return 0;
3857
3858err_out:
3859        clear_bit(SK_F_CONNECT_START, &csk->flags);
3860        return err;
3861}
3862
3863static int cnic_cm_abort(struct cnic_sock *csk)
3864{
3865        struct cnic_local *cp = csk->dev->cnic_priv;
3866        u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3867
3868        if (!cnic_in_use(csk))
3869                return -EINVAL;
3870
3871        if (cnic_abort_prep(csk))
3872                return cnic_cm_abort_req(csk);
3873
3874        /* Getting here means that we haven't started connect, or
3875         * connect was not successful, or it has been reset by the target.
3876         */
3877
3878        cp->close_conn(csk, opcode);
3879        if (csk->state != opcode) {
3880                /* Wait for remote reset sequence to complete */
3881                while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3882                        msleep(1);
3883
3884                return -EALREADY;
3885        }
3886
3887        return 0;
3888}
3889
3890static int cnic_cm_close(struct cnic_sock *csk)
3891{
3892        if (!cnic_in_use(csk))
3893                return -EINVAL;
3894
3895        if (cnic_close_prep(csk)) {
3896                csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3897                return cnic_cm_close_req(csk);
3898        } else {
3899                /* Wait for remote reset sequence to complete */
3900                while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3901                        msleep(1);
3902
3903                return -EALREADY;
3904        }
3905        return 0;
3906}
3907
3908static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3909                           u8 opcode)
3910{
3911        struct cnic_ulp_ops *ulp_ops;
3912        int ulp_type = csk->ulp_type;
3913
3914        rcu_read_lock();
3915        ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3916        if (ulp_ops) {
3917                if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3918                        ulp_ops->cm_connect_complete(csk);
3919                else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3920                        ulp_ops->cm_close_complete(csk);
3921                else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3922                        ulp_ops->cm_remote_abort(csk);
3923                else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3924                        ulp_ops->cm_abort_complete(csk);
3925                else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3926                        ulp_ops->cm_remote_close(csk);
3927        }
3928        rcu_read_unlock();
3929}
3930
3931static int cnic_cm_set_pg(struct cnic_sock *csk)
3932{
3933        if (cnic_offld_prep(csk)) {
3934                if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3935                        cnic_cm_update_pg(csk);
3936                else
3937                        cnic_cm_offload_pg(csk);
3938        }
3939        return 0;
3940}
3941
3942static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3943{
3944        struct cnic_local *cp = dev->cnic_priv;
3945        u32 l5_cid = kcqe->pg_host_opaque;
3946        u8 opcode = kcqe->op_code;
3947        struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3948
3949        csk_hold(csk);
3950        if (!cnic_in_use(csk))
3951                goto done;
3952
3953        if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3954                clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3955                goto done;
3956        }
3957        /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3958        if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3959                clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3960                cnic_cm_upcall(cp, csk,
3961                               L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3962                goto done;
3963        }
3964
3965        csk->pg_cid = kcqe->pg_cid;
3966        set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3967        cnic_cm_conn_req(csk);
3968
3969done:
3970        csk_put(csk);
3971}
3972
3973static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3974{
3975        struct cnic_local *cp = dev->cnic_priv;
3976        struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3977        u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3978        struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3979
3980        ctx->timestamp = jiffies;
3981        ctx->wait_cond = 1;
3982        wake_up(&ctx->waitq);
3983}
3984
3985static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3986{
3987        struct cnic_local *cp = dev->cnic_priv;
3988        struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3989        u8 opcode = l4kcqe->op_code;
3990        u32 l5_cid;
3991        struct cnic_sock *csk;
3992
3993        if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3994                cnic_process_fcoe_term_conn(dev, kcqe);
3995                return;
3996        }
3997        if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3998            opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3999                cnic_cm_process_offld_pg(dev, l4kcqe);
4000                return;
4001        }
4002
4003        l5_cid = l4kcqe->conn_id;
4004        if (opcode & 0x80)
4005                l5_cid = l4kcqe->cid;
4006        if (l5_cid >= MAX_CM_SK_TBL_SZ)
4007                return;
4008
4009        csk = &cp->csk_tbl[l5_cid];
4010        csk_hold(csk);
4011
4012        if (!cnic_in_use(csk)) {
4013                csk_put(csk);
4014                return;
4015        }
4016
4017        switch (opcode) {
4018        case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
4019                if (l4kcqe->status != 0) {
4020                        clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4021                        cnic_cm_upcall(cp, csk,
4022                                       L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
4023                }
4024                break;
4025        case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
4026                if (l4kcqe->status == 0)
4027                        set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
4028                else if (l4kcqe->status ==
4029                         L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4030                        set_bit(SK_F_HW_ERR, &csk->flags);
4031
4032                smp_mb__before_atomic();
4033                clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4034                cnic_cm_upcall(cp, csk, opcode);
4035                break;
4036
4037        case L5CM_RAMROD_CMD_ID_CLOSE: {
4038                struct iscsi_kcqe *l5kcqe = (struct iscsi_kcqe *) kcqe;
4039
4040                if (l4kcqe->status == 0 && l5kcqe->completion_status == 0)
4041                        break;
4042
4043                netdev_warn(dev->netdev, "RAMROD CLOSE compl with status 0x%x completion status 0x%x\n",
4044                            l4kcqe->status, l5kcqe->completion_status);
4045                opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
4046        }
4047                /* Fall through */
4048        case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4049        case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4050        case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4051        case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4052        case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4053                if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4054                        set_bit(SK_F_HW_ERR, &csk->flags);
4055
4056                cp->close_conn(csk, opcode);
4057                break;
4058
4059        case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
4060                /* after we already sent CLOSE_REQ */
4061                if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
4062                    !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
4063                    csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
4064                        cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
4065                else
4066                        cnic_cm_upcall(cp, csk, opcode);
4067                break;
4068        }
4069        csk_put(csk);
4070}
4071
4072static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
4073{
4074        struct cnic_dev *dev = data;
4075        int i;
4076
4077        for (i = 0; i < num; i++)
4078                cnic_cm_process_kcqe(dev, kcqe[i]);
4079}
4080
4081static struct cnic_ulp_ops cm_ulp_ops = {
4082        .indicate_kcqes         = cnic_cm_indicate_kcqe,
4083};
4084
4085static void cnic_cm_free_mem(struct cnic_dev *dev)
4086{
4087        struct cnic_local *cp = dev->cnic_priv;
4088
4089        kvfree(cp->csk_tbl);
4090        cp->csk_tbl = NULL;
4091        cnic_free_id_tbl(&cp->csk_port_tbl);
4092}
4093
4094static int cnic_cm_alloc_mem(struct cnic_dev *dev)
4095{
4096        struct cnic_local *cp = dev->cnic_priv;
4097        u32 port_id;
4098        int i;
4099
4100        cp->csk_tbl = kvcalloc(MAX_CM_SK_TBL_SZ, sizeof(struct cnic_sock),
4101                               GFP_KERNEL);
4102        if (!cp->csk_tbl)
4103                return -ENOMEM;
4104
4105        for (i = 0; i < MAX_CM_SK_TBL_SZ; i++)
4106                atomic_set(&cp->csk_tbl[i].ref_count, 0);
4107
4108        port_id = prandom_u32();
4109        port_id %= CNIC_LOCAL_PORT_RANGE;
4110        if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4111                             CNIC_LOCAL_PORT_MIN, port_id)) {
4112                cnic_cm_free_mem(dev);
4113                return -ENOMEM;
4114        }
4115        return 0;
4116}
4117
4118static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
4119{
4120        if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
4121                /* Unsolicited RESET_COMP or RESET_RECEIVED */
4122                opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
4123                csk->state = opcode;
4124        }
4125
4126        /* 1. If event opcode matches the expected event in csk->state
4127         * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
4128         *    event
4129         * 3. If the expected event is 0, meaning the connection was never
4130         *    never established, we accept the opcode from cm_abort.
4131         */
4132        if (opcode == csk->state || csk->state == 0 ||
4133            csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
4134            csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4135                if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
4136                        if (csk->state == 0)
4137                                csk->state = opcode;
4138                        return 1;
4139                }
4140        }
4141        return 0;
4142}
4143
4144static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
4145{
4146        struct cnic_dev *dev = csk->dev;
4147        struct cnic_local *cp = dev->cnic_priv;
4148
4149        if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
4150                cnic_cm_upcall(cp, csk, opcode);
4151                return;
4152        }
4153
4154        clear_bit(SK_F_CONNECT_START, &csk->flags);
4155        cnic_close_conn(csk);
4156        csk->state = opcode;
4157        cnic_cm_upcall(cp, csk, opcode);
4158}
4159
4160static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
4161{
4162}
4163
4164static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
4165{
4166        u32 seed;
4167
4168        seed = prandom_u32();
4169        cnic_ctx_wr(dev, 45, 0, seed);
4170        return 0;
4171}
4172
4173static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
4174{
4175        struct cnic_dev *dev = csk->dev;
4176        struct cnic_local *cp = dev->cnic_priv;
4177        struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
4178        union l5cm_specific_data l5_data;
4179        u32 cmd = 0;
4180        int close_complete = 0;
4181
4182        switch (opcode) {
4183        case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4184        case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4185        case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4186                if (cnic_ready_to_close(csk, opcode)) {
4187                        if (test_bit(SK_F_HW_ERR, &csk->flags))
4188                                close_complete = 1;
4189                        else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4190                                cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
4191                        else
4192                                close_complete = 1;
4193                }
4194                break;
4195        case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4196                cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
4197                break;
4198        case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4199                close_complete = 1;
4200                break;
4201        }
4202        if (cmd) {
4203                memset(&l5_data, 0, sizeof(l5_data));
4204
4205                cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
4206                                    &l5_data);
4207        } else if (close_complete) {
4208                ctx->timestamp = jiffies;
4209                cnic_close_conn(csk);
4210                cnic_cm_upcall(cp, csk, csk->state);
4211        }
4212}
4213
4214static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
4215{
4216        struct cnic_local *cp = dev->cnic_priv;
4217
4218        if (!cp->ctx_tbl)
4219                return;
4220
4221        if (!netif_running(dev->netdev))
4222                return;
4223
4224        cnic_bnx2x_delete_wait(dev, 0);
4225
4226        cancel_delayed_work(&cp->delete_task);
4227        flush_workqueue(cnic_wq);
4228
4229        if (atomic_read(&cp->iscsi_conn) != 0)
4230                netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
4231                            atomic_read(&cp->iscsi_conn));
4232}
4233
4234static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
4235{
4236        struct bnx2x *bp = netdev_priv(dev->netdev);
4237        u32 pfid = bp->pfid;
4238        u32 port = BP_PORT(bp);
4239
4240        cnic_init_bnx2x_mac(dev);
4241        cnic_bnx2x_set_tcp_options(dev, 0, 1);
4242
4243        CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4244                  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4245
4246        CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4247                XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4248        CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4249                XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4250                DEF_MAX_DA_COUNT);
4251
4252        CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4253                 XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4254        CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4255                 XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4256        CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4257                 XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4258        CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4259                XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4260
4261        CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4262                DEF_MAX_CWND);
4263        return 0;
4264}
4265
4266static void cnic_delete_task(struct work_struct *work)
4267{
4268        struct cnic_local *cp;
4269        struct cnic_dev *dev;
4270        u32 i;
4271        int need_resched = 0;
4272
4273        cp = container_of(work, struct cnic_local, delete_task.work);
4274        dev = cp->dev;
4275
4276        if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4277                struct drv_ctl_info info;
4278
4279                cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4280
4281                memset(&info, 0, sizeof(struct drv_ctl_info));
4282                info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4283                cp->ethdev->drv_ctl(dev->netdev, &info);
4284        }
4285
4286        for (i = 0; i < cp->max_cid_space; i++) {
4287                struct cnic_context *ctx = &cp->ctx_tbl[i];
4288                int err;
4289
4290                if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4291                    !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4292                        continue;
4293
4294                if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4295                        need_resched = 1;
4296                        continue;
4297                }
4298
4299                if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4300                        continue;
4301
4302                err = cnic_bnx2x_destroy_ramrod(dev, i);
4303
4304                cnic_free_bnx2x_conn_resc(dev, i);
4305                if (!err) {
4306                        if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4307                                atomic_dec(&cp->iscsi_conn);
4308
4309                        clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4310                }
4311        }
4312
4313        if (need_resched)
4314                queue_delayed_work(cnic_wq, &cp->delete_task,
4315                                   msecs_to_jiffies(10));
4316
4317}
4318
4319static int cnic_cm_open(struct cnic_dev *dev)
4320{
4321        struct cnic_local *cp = dev->cnic_priv;
4322        int err;
4323
4324        err = cnic_cm_alloc_mem(dev);
4325        if (err)
4326                return err;
4327
4328        err = cp->start_cm(dev);
4329
4330        if (err)
4331                goto err_out;
4332
4333        INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4334
4335        dev->cm_create = cnic_cm_create;
4336        dev->cm_destroy = cnic_cm_destroy;
4337        dev->cm_connect = cnic_cm_connect;
4338        dev->cm_abort = cnic_cm_abort;
4339        dev->cm_close = cnic_cm_close;
4340        dev->cm_select_dev = cnic_cm_select_dev;
4341
4342        cp->ulp_handle[CNIC_ULP_L4] = dev;
4343        rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4344        return 0;
4345
4346err_out:
4347        cnic_cm_free_mem(dev);
4348        return err;
4349}
4350
4351static int cnic_cm_shutdown(struct cnic_dev *dev)
4352{
4353        struct cnic_local *cp = dev->cnic_priv;
4354        int i;
4355
4356        if (!cp->csk_tbl)
4357                return 0;
4358
4359        for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4360                struct cnic_sock *csk = &cp->csk_tbl[i];
4361
4362                clear_bit(SK_F_INUSE, &csk->flags);
4363                cnic_cm_cleanup(csk);
4364        }
4365        cnic_cm_free_mem(dev);
4366
4367        return 0;
4368}
4369
4370static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4371{
4372        u32 cid_addr;
4373        int i;
4374
4375        cid_addr = GET_CID_ADDR(cid);
4376
4377        for (i = 0; i < CTX_SIZE; i += 4)
4378                cnic_ctx_wr(dev, cid_addr, i, 0);
4379}
4380
4381static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4382{
4383        struct cnic_local *cp = dev->cnic_priv;
4384        int ret = 0, i;
4385        u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4386
4387        if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4388                return 0;
4389
4390        for (i = 0; i < cp->ctx_blks; i++) {
4391                int j;
4392                u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4393                u32 val;
4394
4395                memset(cp->ctx_arr[i].ctx, 0, CNIC_PAGE_SIZE);
4396
4397                CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4398                        (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4399                CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4400                        (u64) cp->ctx_arr[i].mapping >> 32);
4401                CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4402                        BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4403                for (j = 0; j < 10; j++) {
4404
4405                        val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4406                        if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4407                                break;
4408                        udelay(5);
4409                }
4410                if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4411                        ret = -EBUSY;
4412                        break;
4413                }
4414        }
4415        return ret;
4416}
4417
4418static void cnic_free_irq(struct cnic_dev *dev)
4419{
4420        struct cnic_local *cp = dev->cnic_priv;
4421        struct cnic_eth_dev *ethdev = cp->ethdev;
4422
4423        if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4424                cp->disable_int_sync(dev);
4425                tasklet_kill(&cp->cnic_irq_task);
4426                free_irq(ethdev->irq_arr[0].vector, dev);
4427        }
4428}
4429
4430static int cnic_request_irq(struct cnic_dev *dev)
4431{
4432        struct cnic_local *cp = dev->cnic_priv;
4433        struct cnic_eth_dev *ethdev = cp->ethdev;
4434        int err;
4435
4436        err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4437        if (err)
4438                tasklet_disable(&cp->cnic_irq_task);
4439
4440        return err;
4441}
4442
4443static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4444{
4445        struct cnic_local *cp = dev->cnic_priv;
4446        struct cnic_eth_dev *ethdev = cp->ethdev;
4447
4448        if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4449                int err, i = 0;
4450                int sblk_num = cp->status_blk_num;
4451                u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4452                           BNX2_HC_SB_CONFIG_1;
4453
4454                CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4455
4456                CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4457                CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4458                CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4459
4460                cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4461                tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4462                             (unsigned long) dev);
4463                err = cnic_request_irq(dev);
4464                if (err)
4465                        return err;
4466
4467                while (cp->status_blk.bnx2->status_completion_producer_index &&
4468                       i < 10) {
4469                        CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4470                                1 << (11 + sblk_num));
4471                        udelay(10);
4472                        i++;
4473                        barrier();
4474                }
4475                if (cp->status_blk.bnx2->status_completion_producer_index) {
4476                        cnic_free_irq(dev);
4477                        goto failed;
4478                }
4479
4480        } else {
4481                struct status_block *sblk = cp->status_blk.gen;
4482                u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4483                int i = 0;
4484
4485                while (sblk->status_completion_producer_index && i < 10) {
4486                        CNIC_WR(dev, BNX2_HC_COMMAND,
4487                                hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4488                        udelay(10);
4489                        i++;
4490                        barrier();
4491                }
4492                if (sblk->status_completion_producer_index)
4493                        goto failed;
4494
4495        }
4496        return 0;
4497
4498failed:
4499        netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4500        return -EBUSY;
4501}
4502
4503static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4504{
4505        struct cnic_local *cp = dev->cnic_priv;
4506        struct cnic_eth_dev *ethdev = cp->ethdev;
4507
4508        if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4509                return;
4510
4511        CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4512                BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4513}
4514
4515static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4516{
4517        struct cnic_local *cp = dev->cnic_priv;
4518        struct cnic_eth_dev *ethdev = cp->ethdev;
4519
4520        if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4521                return;
4522
4523        CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4524                BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4525        CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4526        synchronize_irq(ethdev->irq_arr[0].vector);
4527}
4528
4529static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4530{
4531        struct cnic_local *cp = dev->cnic_priv;
4532        struct cnic_eth_dev *ethdev = cp->ethdev;
4533        struct cnic_uio_dev *udev = cp->udev;
4534        u32 cid_addr, tx_cid, sb_id;
4535        u32 val, offset0, offset1, offset2, offset3;
4536        int i;
4537        struct bnx2_tx_bd *txbd;
4538        dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4539        struct status_block *s_blk = cp->status_blk.gen;
4540
4541        sb_id = cp->status_blk_num;
4542        tx_cid = 20;
4543        cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4544        if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4545                struct status_block_msix *sblk = cp->status_blk.bnx2;
4546
4547                tx_cid = TX_TSS_CID + sb_id - 1;
4548                CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4549                        (TX_TSS_CID << 7));
4550                cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4551        }
4552        cp->tx_cons = *cp->tx_cons_ptr;
4553
4554        cid_addr = GET_CID_ADDR(tx_cid);
4555        if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
4556                u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4557
4558                for (i = 0; i < PHY_CTX_SIZE; i += 4)
4559                        cnic_ctx_wr(dev, cid_addr2, i, 0);
4560
4561                offset0 = BNX2_L2CTX_TYPE_XI;
4562                offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4563                offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4564                offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4565        } else {
4566                cnic_init_context(dev, tx_cid);
4567                cnic_init_context(dev, tx_cid + 1);
4568
4569                offset0 = BNX2_L2CTX_TYPE;
4570                offset1 = BNX2_L2CTX_CMD_TYPE;
4571                offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4572                offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4573        }
4574        val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4575        cnic_ctx_wr(dev, cid_addr, offset0, val);
4576
4577        val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4578        cnic_ctx_wr(dev, cid_addr, offset1, val);
4579
4580        txbd = udev->l2_ring;
4581
4582        buf_map = udev->l2_buf_map;
4583        for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i++, txbd++) {
4584                txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4585                txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4586        }
4587        val = (u64) ring_map >> 32;
4588        cnic_ctx_wr(dev, cid_addr, offset2, val);
4589        txbd->tx_bd_haddr_hi = val;
4590
4591        val = (u64) ring_map & 0xffffffff;
4592        cnic_ctx_wr(dev, cid_addr, offset3, val);
4593        txbd->tx_bd_haddr_lo = val;
4594}
4595
4596static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4597{
4598        struct cnic_local *cp = dev->cnic_priv;
4599        struct cnic_eth_dev *ethdev = cp->ethdev;
4600        struct cnic_uio_dev *udev = cp->udev;
4601        u32 cid_addr, sb_id, val, coal_reg, coal_val;
4602        int i;
4603        struct bnx2_rx_bd *rxbd;
4604        struct status_block *s_blk = cp->status_blk.gen;
4605        dma_addr_t ring_map = udev->l2_ring_map;
4606
4607        sb_id = cp->status_blk_num;
4608        cnic_init_context(dev, 2);
4609        cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4610        coal_reg = BNX2_HC_COMMAND;
4611        coal_val = CNIC_RD(dev, coal_reg);
4612        if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4613                struct status_block_msix *sblk = cp->status_blk.bnx2;
4614
4615                cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4616                coal_reg = BNX2_HC_COALESCE_NOW;
4617                coal_val = 1 << (11 + sb_id);
4618        }
4619        i = 0;
4620        while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4621                CNIC_WR(dev, coal_reg, coal_val);
4622                udelay(10);
4623                i++;
4624                barrier();
4625        }
4626        cp->rx_cons = *cp->rx_cons_ptr;
4627
4628        cid_addr = GET_CID_ADDR(2);
4629        val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4630              BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4631        cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4632
4633        if (sb_id == 0)
4634                val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4635        else
4636                val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4637        cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4638
4639        rxbd = udev->l2_ring + CNIC_PAGE_SIZE;
4640        for (i = 0; i < BNX2_MAX_RX_DESC_CNT; i++, rxbd++) {
4641                dma_addr_t buf_map;
4642                int n = (i % cp->l2_rx_ring_size) + 1;
4643
4644                buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4645                rxbd->rx_bd_len = cp->l2_single_buf_size;
4646                rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4647                rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4648                rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4649        }
4650        val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
4651        cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4652        rxbd->rx_bd_haddr_hi = val;
4653
4654        val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
4655        cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4656        rxbd->rx_bd_haddr_lo = val;
4657
4658        val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4659        cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4660}
4661
4662static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4663{
4664        struct kwqe *wqes[1], l2kwqe;
4665
4666        memset(&l2kwqe, 0, sizeof(l2kwqe));
4667        wqes[0] = &l2kwqe;
4668        l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4669                              (L2_KWQE_OPCODE_VALUE_FLUSH <<
4670                               KWQE_OPCODE_SHIFT) | 2;
4671        dev->submit_kwqes(dev, wqes, 1);
4672}
4673
4674static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4675{
4676        struct cnic_local *cp = dev->cnic_priv;
4677        u32 val;
4678
4679        val = cp->func << 2;
4680
4681        cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4682
4683        val = cnic_reg_rd_ind(dev, cp->shmem_base +
4684                              BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4685        dev->mac_addr[0] = (u8) (val >> 8);
4686        dev->mac_addr[1] = (u8) val;
4687
4688        CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4689
4690        val = cnic_reg_rd_ind(dev, cp->shmem_base +
4691                              BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4692        dev->mac_addr[2] = (u8) (val >> 24);
4693        dev->mac_addr[3] = (u8) (val >> 16);
4694        dev->mac_addr[4] = (u8) (val >> 8);
4695        dev->mac_addr[5] = (u8) val;
4696
4697        CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4698
4699        val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4700        if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4701                val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4702
4703        CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4704        CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4705        CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4706}
4707
4708static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4709{
4710        struct cnic_local *cp = dev->cnic_priv;
4711        struct cnic_eth_dev *ethdev = cp->ethdev;
4712        struct status_block *sblk = cp->status_blk.gen;
4713        u32 val, kcq_cid_addr, kwq_cid_addr;
4714        int err;
4715
4716        cnic_set_bnx2_mac(dev);
4717
4718        val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4719        val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4720        if (CNIC_PAGE_BITS > 12)
4721                val |= (12 - 8)  << 4;
4722        else
4723                val |= (CNIC_PAGE_BITS - 8)  << 4;
4724
4725        CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4726
4727        CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4728        CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4729        CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4730
4731        err = cnic_setup_5709_context(dev, 1);
4732        if (err)
4733                return err;
4734
4735        cnic_init_context(dev, KWQ_CID);
4736        cnic_init_context(dev, KCQ_CID);
4737
4738        kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4739        cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4740
4741        cp->max_kwq_idx = MAX_KWQ_IDX;
4742        cp->kwq_prod_idx = 0;
4743        cp->kwq_con_idx = 0;
4744        set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4745
4746        if (BNX2_CHIP(cp) == BNX2_CHIP_5706 || BNX2_CHIP(cp) == BNX2_CHIP_5708)
4747                cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4748        else
4749                cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4750
4751        /* Initialize the kernel work queue context. */
4752        val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4753              (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4754        cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4755
4756        val = (CNIC_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4757        cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4758
4759        val = ((CNIC_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4760        cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4761
4762        val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4763        cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4764
4765        val = (u32) cp->kwq_info.pgtbl_map;
4766        cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4767
4768        kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4769        cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4770
4771        cp->kcq1.sw_prod_idx = 0;
4772        cp->kcq1.hw_prod_idx_ptr =
4773                &sblk->status_completion_producer_index;
4774
4775        cp->kcq1.status_idx_ptr = &sblk->status_idx;
4776
4777        /* Initialize the kernel complete queue context. */
4778        val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4779              (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4780        cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4781
4782        val = (CNIC_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4783        cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4784
4785        val = ((CNIC_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4786        cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4787
4788        val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4789        cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4790
4791        val = (u32) cp->kcq1.dma.pgtbl_map;
4792        cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4793
4794        cp->int_num = 0;
4795        if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4796                struct status_block_msix *msblk = cp->status_blk.bnx2;
4797                u32 sb_id = cp->status_blk_num;
4798                u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4799
4800                cp->kcq1.hw_prod_idx_ptr =
4801                        &msblk->status_completion_producer_index;
4802                cp->kcq1.status_idx_ptr = &msblk->status_idx;
4803                cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
4804                cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4805                cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4806                cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4807        }
4808
4809        /* Enable Commnad Scheduler notification when we write to the
4810         * host producer index of the kernel contexts. */
4811        CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4812
4813        /* Enable Command Scheduler notification when we write to either
4814         * the Send Queue or Receive Queue producer indexes of the kernel
4815         * bypass contexts. */
4816        CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4817        CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4818
4819        /* Notify COM when the driver post an application buffer. */
4820        CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4821
4822        /* Set the CP and COM doorbells.  These two processors polls the
4823         * doorbell for a non zero value before running.  This must be done
4824         * after setting up the kernel queue contexts. */
4825        cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4826        cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4827
4828        cnic_init_bnx2_tx_ring(dev);
4829        cnic_init_bnx2_rx_ring(dev);
4830
4831        err = cnic_init_bnx2_irq(dev);
4832        if (err) {
4833                netdev_err(dev->netdev, "cnic_init_irq failed\n");
4834                cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4835                cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4836                return err;
4837        }
4838
4839        ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
4840
4841        return 0;
4842}
4843
4844static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4845{
4846        struct cnic_local *cp = dev->cnic_priv;
4847        struct cnic_eth_dev *ethdev = cp->ethdev;
4848        u32 start_offset = ethdev->ctx_tbl_offset;
4849        int i;
4850
4851        for (i = 0; i < cp->ctx_blks; i++) {
4852                struct cnic_ctx *ctx = &cp->ctx_arr[i];
4853                dma_addr_t map = ctx->mapping;
4854
4855                if (cp->ctx_align) {
4856                        unsigned long mask = cp->ctx_align - 1;
4857
4858                        map = (map + mask) & ~mask;
4859                }
4860
4861                cnic_ctx_tbl_wr(dev, start_offset + i, map);
4862        }
4863}
4864
4865static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4866{
4867        struct cnic_local *cp = dev->cnic_priv;
4868        struct cnic_eth_dev *ethdev = cp->ethdev;
4869        int err = 0;
4870
4871        tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4872                     (unsigned long) dev);
4873        if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4874                err = cnic_request_irq(dev);
4875
4876        return err;
4877}
4878
4879static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4880                                                u16 sb_id, u8 sb_index,
4881                                                u8 disable)
4882{
4883        struct bnx2x *bp = netdev_priv(dev->netdev);
4884
4885        u32 addr = BAR_CSTRORM_INTMEM +
4886                        CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4887                        offsetof(struct hc_status_block_data_e1x, index_data) +
4888                        sizeof(struct hc_index_data)*sb_index +
4889                        offsetof(struct hc_index_data, flags);
4890        u16 flags = CNIC_RD16(dev, addr);
4891        /* clear and set */
4892        flags &= ~HC_INDEX_DATA_HC_ENABLED;
4893        flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4894                  HC_INDEX_DATA_HC_ENABLED);
4895        CNIC_WR16(dev, addr, flags);
4896}
4897
4898static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4899{
4900        struct cnic_local *cp = dev->cnic_priv;
4901        struct bnx2x *bp = netdev_priv(dev->netdev);
4902        u8 sb_id = cp->status_blk_num;
4903
4904        CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4905                        CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4906                        offsetof(struct hc_status_block_data_e1x, index_data) +
4907                        sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4908                        offsetof(struct hc_index_data, timeout), 64 / 4);
4909        cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4910}
4911
4912static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4913{
4914}
4915
4916static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4917                                    struct client_init_ramrod_data *data)
4918{
4919        struct cnic_local *cp = dev->cnic_priv;
4920        struct bnx2x *bp = netdev_priv(dev->netdev);
4921        struct cnic_uio_dev *udev = cp->udev;
4922        union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4923        dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4924        struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4925        int i;
4926        u32 cli = cp->ethdev->iscsi_l2_client_id;
4927        u32 val;
4928
4929        memset(txbd, 0, CNIC_PAGE_SIZE);
4930
4931        buf_map = udev->l2_buf_map;
4932        for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4933                struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4934                struct eth_tx_parse_bd_e1x *pbd_e1x =
4935                        &((txbd + 1)->parse_bd_e1x);
4936                struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2);
4937                struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4938
4939                start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4940                start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4941                reg_bd->addr_hi = start_bd->addr_hi;
4942                reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4943                start_bd->nbytes = cpu_to_le16(0x10);
4944                start_bd->nbd = cpu_to_le16(3);
4945                start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4946                start_bd->general_data &= ~ETH_TX_START_BD_PARSE_NBDS;
4947                start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4948
4949                if (BNX2X_CHIP_IS_E2_PLUS(bp))
4950                        pbd_e2->parsing_data = (UNICAST_ADDRESS <<
4951                                ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT);
4952                else
4953                        pbd_e1x->global_data = (UNICAST_ADDRESS <<
4954                                ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT);
4955        }
4956
4957        val = (u64) ring_map >> 32;
4958        txbd->next_bd.addr_hi = cpu_to_le32(val);
4959
4960        data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4961
4962        val = (u64) ring_map & 0xffffffff;
4963        txbd->next_bd.addr_lo = cpu_to_le32(val);
4964
4965        data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4966
4967        /* Other ramrod params */
4968        data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4969        data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4970
4971        /* reset xstorm per client statistics */
4972        if (cli < MAX_STAT_COUNTER_ID) {
4973                data->general.statistics_zero_flg = 1;
4974                data->general.statistics_en_flg = 1;
4975                data->general.statistics_counter_id = cli;
4976        }
4977
4978        cp->tx_cons_ptr =
4979                &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4980}
4981
4982static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4983                                    struct client_init_ramrod_data *data)
4984{
4985        struct cnic_local *cp = dev->cnic_priv;
4986        struct bnx2x *bp = netdev_priv(dev->netdev);
4987        struct cnic_uio_dev *udev = cp->udev;
4988        struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4989                                CNIC_PAGE_SIZE);
4990        struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4991                                (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
4992        struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4993        int i;
4994        u32 cli = cp->ethdev->iscsi_l2_client_id;
4995        int cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
4996        u32 val;
4997        dma_addr_t ring_map = udev->l2_ring_map;
4998
4999        /* General data */
5000        data->general.client_id = cli;
5001        data->general.activate_flg = 1;
5002        data->general.sp_client_id = cli;
5003        data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
5004        data->general.func_id = bp->pfid;
5005
5006        for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
5007                dma_addr_t buf_map;
5008                int n = (i % cp->l2_rx_ring_size) + 1;
5009
5010                buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
5011                rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
5012                rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
5013        }
5014
5015        val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32;
5016        rxbd->addr_hi = cpu_to_le32(val);
5017        data->rx.bd_page_base.hi = cpu_to_le32(val);
5018
5019        val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff;
5020        rxbd->addr_lo = cpu_to_le32(val);
5021        data->rx.bd_page_base.lo = cpu_to_le32(val);
5022
5023        rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
5024        val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) >> 32;
5025        rxcqe->addr_hi = cpu_to_le32(val);
5026        data->rx.cqe_page_base.hi = cpu_to_le32(val);
5027
5028        val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) & 0xffffffff;
5029        rxcqe->addr_lo = cpu_to_le32(val);
5030        data->rx.cqe_page_base.lo = cpu_to_le32(val);
5031
5032        /* Other ramrod params */
5033        data->rx.client_qzone_id = cl_qzone_id;
5034        data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
5035        data->rx.status_block_id = BNX2X_DEF_SB_ID;
5036
5037        data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
5038
5039        data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
5040        data->rx.outer_vlan_removal_enable_flg = 1;
5041        data->rx.silent_vlan_removal_flg = 1;
5042        data->rx.silent_vlan_value = 0;
5043        data->rx.silent_vlan_mask = 0xffff;
5044
5045        cp->rx_cons_ptr =
5046                &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
5047        cp->rx_cons = *cp->rx_cons_ptr;
5048}
5049
5050static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
5051{
5052        struct cnic_local *cp = dev->cnic_priv;
5053        struct bnx2x *bp = netdev_priv(dev->netdev);
5054        u32 pfid = bp->pfid;
5055
5056        cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
5057                           CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
5058        cp->kcq1.sw_prod_idx = 0;
5059
5060        if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5061                struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5062
5063                cp->kcq1.hw_prod_idx_ptr =
5064                        &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5065                cp->kcq1.status_idx_ptr =
5066                        &sb->sb.running_index[SM_RX_ID];
5067        } else {
5068                struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
5069
5070                cp->kcq1.hw_prod_idx_ptr =
5071                        &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5072                cp->kcq1.status_idx_ptr =
5073                        &sb->sb.running_index[SM_RX_ID];
5074        }
5075
5076        if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5077                struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5078
5079                cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
5080                                        USTORM_FCOE_EQ_PROD_OFFSET(pfid);
5081                cp->kcq2.sw_prod_idx = 0;
5082                cp->kcq2.hw_prod_idx_ptr =
5083                        &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
5084                cp->kcq2.status_idx_ptr =
5085                        &sb->sb.running_index[SM_RX_ID];
5086        }
5087}
5088
5089static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
5090{
5091        struct cnic_local *cp = dev->cnic_priv;
5092        struct bnx2x *bp = netdev_priv(dev->netdev);
5093        struct cnic_eth_dev *ethdev = cp->ethdev;
5094        int ret;
5095        u32 pfid;
5096
5097        dev->stats_addr = ethdev->addr_drv_info_to_mcp;
5098        cp->func = bp->pf_num;
5099
5100        pfid = bp->pfid;
5101
5102        ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5103                               cp->iscsi_start_cid, 0);
5104
5105        if (ret)
5106                return -ENOMEM;
5107
5108        if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5109                ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5110                                        cp->fcoe_start_cid, 0);
5111
5112                if (ret)
5113                        return -ENOMEM;
5114        }
5115
5116        cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
5117
5118        cnic_init_bnx2x_kcq(dev);
5119
5120        /* Only 1 EQ */
5121        CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5122        CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5123                CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5124        CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5125                CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5126                cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5127        CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5128                CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5129                (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5130        CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5131                CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5132                cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5133        CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5134                CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5135                (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5136        CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5137                CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5138        CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5139                CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5140        CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5141                CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5142                HC_INDEX_ISCSI_EQ_CONS);
5143
5144        CNIC_WR(dev, BAR_USTRORM_INTMEM +
5145                USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5146                cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
5147        CNIC_WR(dev, BAR_USTRORM_INTMEM +
5148                USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5149                (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
5150
5151        CNIC_WR(dev, BAR_TSTRORM_INTMEM +
5152                TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
5153
5154        cnic_setup_bnx2x_context(dev);
5155
5156        ret = cnic_init_bnx2x_irq(dev);
5157        if (ret)
5158                return ret;
5159
5160        ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
5161        return 0;
5162}
5163
5164static void cnic_init_rings(struct cnic_dev *dev)
5165{
5166        struct cnic_local *cp = dev->cnic_priv;
5167        struct bnx2x *bp = netdev_priv(dev->netdev);
5168        struct cnic_uio_dev *udev = cp->udev;
5169
5170        if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5171                return;
5172
5173        if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5174                cnic_init_bnx2_tx_ring(dev);
5175                cnic_init_bnx2_rx_ring(dev);
5176                set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5177        } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5178                u32 cli = cp->ethdev->iscsi_l2_client_id;
5179                u32 cid = cp->ethdev->iscsi_l2_cid;
5180                u32 cl_qzone_id;
5181                struct client_init_ramrod_data *data;
5182                union l5cm_specific_data l5_data;
5183                struct ustorm_eth_rx_producers rx_prods = {0};
5184                u32 off, i, *cid_ptr;
5185
5186                rx_prods.bd_prod = 0;
5187                rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
5188                barrier();
5189
5190                cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
5191
5192                off = BAR_USTRORM_INTMEM +
5193                        (BNX2X_CHIP_IS_E2_PLUS(bp) ?
5194                         USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
5195                         USTORM_RX_PRODS_E1X_OFFSET(BP_PORT(bp), cli));
5196
5197                for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5198                        CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5199
5200                set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5201
5202                data = udev->l2_buf;
5203                cid_ptr = udev->l2_buf + 12;
5204
5205                memset(data, 0, sizeof(*data));
5206
5207                cnic_init_bnx2x_tx_ring(dev, data);
5208                cnic_init_bnx2x_rx_ring(dev, data);
5209
5210                data->general.fp_hsi_ver =  ETH_FP_HSI_VERSION;
5211
5212                l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5213                l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5214
5215                set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5216
5217                cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5218                        cid, ETH_CONNECTION_TYPE, &l5_data);
5219
5220                i = 0;
5221                while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5222                       ++i < 10)
5223                        msleep(1);
5224
5225                if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5226                        netdev_err(dev->netdev,
5227                                "iSCSI CLIENT_SETUP did not complete\n");
5228                cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5229                cnic_ring_ctl(dev, cid, cli, 1);
5230                *cid_ptr = cid >> 4;
5231                *(cid_ptr + 1) = cid * bp->db_size;
5232                *(cid_ptr + 2) = UIO_USE_TX_DOORBELL;
5233        }
5234}
5235
5236static void cnic_shutdown_rings(struct cnic_dev *dev)
5237{
5238        struct cnic_local *cp = dev->cnic_priv;
5239        struct cnic_uio_dev *udev = cp->udev;
5240        void *rx_ring;
5241
5242        if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5243                return;
5244
5245        if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5246                cnic_shutdown_bnx2_rx_ring(dev);
5247        } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5248                u32 cli = cp->ethdev->iscsi_l2_client_id;
5249                u32 cid = cp->ethdev->iscsi_l2_cid;
5250                union l5cm_specific_data l5_data;
5251                int i;
5252
5253                cnic_ring_ctl(dev, cid, cli, 0);
5254
5255                set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5256
5257                l5_data.phy_address.lo = cli;
5258                l5_data.phy_address.hi = 0;
5259                cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5260                        cid, ETH_CONNECTION_TYPE, &l5_data);
5261                i = 0;
5262                while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5263                       ++i < 10)
5264                        msleep(1);
5265
5266                if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5267                        netdev_err(dev->netdev,
5268                                "iSCSI CLIENT_HALT did not complete\n");
5269                cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5270
5271                memset(&l5_data, 0, sizeof(l5_data));
5272                cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5273                        cid, NONE_CONNECTION_TYPE, &l5_data);
5274                msleep(10);
5275        }
5276        clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5277        rx_ring = udev->l2_ring + CNIC_PAGE_SIZE;
5278        memset(rx_ring, 0, CNIC_PAGE_SIZE);
5279}
5280
5281static int cnic_register_netdev(struct cnic_dev *dev)
5282{
5283        struct cnic_local *cp = dev->cnic_priv;
5284        struct cnic_eth_dev *ethdev = cp->ethdev;
5285        int err;
5286
5287        if (!ethdev)
5288                return -ENODEV;
5289
5290        if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5291                return 0;
5292
5293        err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5294        if (err)
5295                netdev_err(dev->netdev, "register_cnic failed\n");
5296
5297        /* Read iSCSI config again.  On some bnx2x device, iSCSI config
5298         * can change after firmware is downloaded.
5299         */
5300        dev->max_iscsi_conn = ethdev->max_iscsi_conn;
5301        if (ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
5302                dev->max_iscsi_conn = 0;
5303
5304        return err;
5305}
5306
5307static void cnic_unregister_netdev(struct cnic_dev *dev)
5308{
5309        struct cnic_local *cp = dev->cnic_priv;
5310        struct cnic_eth_dev *ethdev = cp->ethdev;
5311
5312        if (!ethdev)
5313                return;
5314
5315        ethdev->drv_unregister_cnic(dev->netdev);
5316}
5317
5318static int cnic_start_hw(struct cnic_dev *dev)
5319{
5320        struct cnic_local *cp = dev->cnic_priv;
5321        struct cnic_eth_dev *ethdev = cp->ethdev;
5322        int err;
5323
5324        if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5325                return -EALREADY;
5326
5327        dev->regview = ethdev->io_base;
5328        pci_dev_get(dev->pcidev);
5329        cp->func = PCI_FUNC(dev->pcidev->devfn);
5330        cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5331        cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5332
5333        err = cp->alloc_resc(dev);
5334        if (err) {
5335                netdev_err(dev->netdev, "allocate resource failure\n");
5336                goto err1;
5337        }
5338
5339        err = cp->start_hw(dev);
5340        if (err)
5341                goto err1;
5342
5343        err = cnic_cm_open(dev);
5344        if (err)
5345                goto err1;
5346
5347        set_bit(CNIC_F_CNIC_UP, &dev->flags);
5348
5349        cp->enable_int(dev);
5350
5351        return 0;
5352
5353err1:
5354        if (ethdev->drv_state & CNIC_DRV_STATE_HANDLES_IRQ)
5355                cp->stop_hw(dev);
5356        else
5357                cp->free_resc(dev);
5358        pci_dev_put(dev->pcidev);
5359        return err;
5360}
5361
5362static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5363{
5364        cnic_disable_bnx2_int_sync(dev);
5365
5366        cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5367        cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5368
5369        cnic_init_context(dev, KWQ_CID);
5370        cnic_init_context(dev, KCQ_CID);
5371
5372        cnic_setup_5709_context(dev, 0);
5373        cnic_free_irq(dev);
5374
5375        cnic_free_resc(dev);
5376}
5377
5378
5379static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5380{
5381        struct cnic_local *cp = dev->cnic_priv;
5382        struct bnx2x *bp = netdev_priv(dev->netdev);
5383        u32 hc_index = HC_INDEX_ISCSI_EQ_CONS;
5384        u32 sb_id = cp->status_blk_num;
5385        u32 idx_off, syn_off;
5386
5387        cnic_free_irq(dev);
5388
5389        if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5390                idx_off = offsetof(struct hc_status_block_e2, index_values) +
5391                          (hc_index * sizeof(u16));
5392
5393                syn_off = CSTORM_HC_SYNC_LINE_INDEX_E2_OFFSET(hc_index, sb_id);
5394        } else {
5395                idx_off = offsetof(struct hc_status_block_e1x, index_values) +
5396                          (hc_index * sizeof(u16));
5397
5398                syn_off = CSTORM_HC_SYNC_LINE_INDEX_E1X_OFFSET(hc_index, sb_id);
5399        }
5400        CNIC_WR16(dev, BAR_CSTRORM_INTMEM + syn_off, 0);
5401        CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_OFFSET(sb_id) +
5402                  idx_off, 0);
5403
5404        *cp->kcq1.hw_prod_idx_ptr = 0;
5405        CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5406                CSTORM_ISCSI_EQ_CONS_OFFSET(bp->pfid, 0), 0);
5407        CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5408        cnic_free_resc(dev);
5409}
5410
5411static void cnic_stop_hw(struct cnic_dev *dev)
5412{
5413        if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5414                struct cnic_local *cp = dev->cnic_priv;
5415                int i = 0;
5416
5417                /* Need to wait for the ring shutdown event to complete
5418                 * before clearing the CNIC_UP flag.
5419                 */
5420                while (cp->udev && cp->udev->uio_dev != -1 && i < 15) {
5421                        msleep(100);
5422                        i++;
5423                }
5424                cnic_shutdown_rings(dev);
5425                cp->stop_cm(dev);
5426                cp->ethdev->drv_state &= ~CNIC_DRV_STATE_HANDLES_IRQ;
5427                clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5428                RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5429                synchronize_rcu();
5430                cnic_cm_shutdown(dev);
5431                cp->stop_hw(dev);
5432                pci_dev_put(dev->pcidev);
5433        }
5434}
5435
5436static void cnic_free_dev(struct cnic_dev *dev)
5437{
5438        int i = 0;
5439
5440        while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5441                msleep(100);
5442                i++;
5443        }
5444        if (atomic_read(&dev->ref_count) != 0)
5445                netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5446
5447        netdev_info(dev->netdev, "Removed CNIC device\n");
5448        dev_put(dev->netdev);
5449        kfree(dev);
5450}
5451
5452static int cnic_get_fc_npiv_tbl(struct cnic_dev *dev,
5453                                struct cnic_fc_npiv_tbl *npiv_tbl)
5454{
5455        struct cnic_local *cp = dev->cnic_priv;
5456        struct bnx2x *bp = netdev_priv(dev->netdev);
5457        int ret;
5458
5459        if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
5460                return -EAGAIN;     /* bnx2x is down */
5461
5462        if (!BNX2X_CHIP_IS_E2_PLUS(bp))
5463                return -EINVAL;
5464
5465        ret = cp->ethdev->drv_get_fc_npiv_tbl(dev->netdev, npiv_tbl);
5466        return ret;
5467}
5468
5469static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5470                                       struct pci_dev *pdev)
5471{
5472        struct cnic_dev *cdev;
5473        struct cnic_local *cp;
5474        int alloc_size;
5475
5476        alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5477
5478        cdev = kzalloc(alloc_size, GFP_KERNEL);
5479        if (cdev == NULL)
5480                return NULL;
5481
5482        cdev->netdev = dev;
5483        cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5484        cdev->register_device = cnic_register_device;
5485        cdev->unregister_device = cnic_unregister_device;
5486        cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5487        cdev->get_fc_npiv_tbl = cnic_get_fc_npiv_tbl;
5488        atomic_set(&cdev->ref_count, 0);
5489
5490        cp = cdev->cnic_priv;
5491        cp->dev = cdev;
5492        cp->l2_single_buf_size = 0x400;
5493        cp->l2_rx_ring_size = 3;
5494
5495        spin_lock_init(&cp->cnic_ulp_lock);
5496
5497        netdev_info(dev, "Added CNIC device\n");
5498
5499        return cdev;
5500}
5501
5502static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5503{
5504        struct pci_dev *pdev;
5505        struct cnic_dev *cdev;
5506        struct cnic_local *cp;
5507        struct bnx2 *bp = netdev_priv(dev);
5508        struct cnic_eth_dev *ethdev = NULL;
5509
5510        if (bp->cnic_probe)
5511                ethdev = (bp->cnic_probe)(dev);
5512
5513        if (!ethdev)
5514                return NULL;
5515
5516        pdev = ethdev->pdev;
5517        if (!pdev)
5518                return NULL;
5519
5520        dev_hold(dev);
5521        pci_dev_get(pdev);
5522        if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5523             pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5524            (pdev->revision < 0x10)) {
5525                pci_dev_put(pdev);
5526                goto cnic_err;
5527        }
5528        pci_dev_put(pdev);
5529
5530        cdev = cnic_alloc_dev(dev, pdev);
5531        if (cdev == NULL)
5532                goto cnic_err;
5533
5534        set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5535        cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5536
5537        cp = cdev->cnic_priv;
5538        cp->ethdev = ethdev;
5539        cdev->pcidev = pdev;
5540        cp->chip_id = ethdev->chip_id;
5541
5542        cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5543
5544        cp->cnic_ops = &cnic_bnx2_ops;
5545        cp->start_hw = cnic_start_bnx2_hw;
5546        cp->stop_hw = cnic_stop_bnx2_hw;
5547        cp->setup_pgtbl = cnic_setup_page_tbl;
5548        cp->alloc_resc = cnic_alloc_bnx2_resc;
5549        cp->free_resc = cnic_free_resc;
5550        cp->start_cm = cnic_cm_init_bnx2_hw;
5551        cp->stop_cm = cnic_cm_stop_bnx2_hw;
5552        cp->enable_int = cnic_enable_bnx2_int;
5553        cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5554        cp->close_conn = cnic_close_bnx2_conn;
5555        return cdev;
5556
5557cnic_err:
5558        dev_put(dev);
5559        return NULL;
5560}
5561
5562static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5563{
5564        struct pci_dev *pdev;
5565        struct cnic_dev *cdev;
5566        struct cnic_local *cp;
5567        struct bnx2x *bp = netdev_priv(dev);
5568        struct cnic_eth_dev *ethdev = NULL;
5569
5570        if (bp->cnic_probe)
5571                ethdev = bp->cnic_probe(dev);
5572
5573        if (!ethdev)
5574                return NULL;
5575
5576        pdev = ethdev->pdev;
5577        if (!pdev)
5578                return NULL;
5579
5580        dev_hold(dev);
5581        cdev = cnic_alloc_dev(dev, pdev);
5582        if (cdev == NULL) {
5583                dev_put(dev);
5584                return NULL;
5585        }
5586
5587        set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5588        cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5589
5590        cp = cdev->cnic_priv;
5591        cp->ethdev = ethdev;
5592        cdev->pcidev = pdev;
5593        cp->chip_id = ethdev->chip_id;
5594
5595        cdev->stats_addr = ethdev->addr_drv_info_to_mcp;
5596
5597        if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5598                cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5599        if (CNIC_SUPPORTS_FCOE(bp)) {
5600                cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5601                cdev->max_fcoe_exchanges = ethdev->max_fcoe_exchanges;
5602        }
5603
5604        if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
5605                cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
5606
5607        memcpy(cdev->mac_addr, ethdev->iscsi_mac, ETH_ALEN);
5608
5609        cp->cnic_ops = &cnic_bnx2x_ops;
5610        cp->start_hw = cnic_start_bnx2x_hw;
5611        cp->stop_hw = cnic_stop_bnx2x_hw;
5612        cp->setup_pgtbl = cnic_setup_page_tbl_le;
5613        cp->alloc_resc = cnic_alloc_bnx2x_resc;
5614        cp->free_resc = cnic_free_resc;
5615        cp->start_cm = cnic_cm_init_bnx2x_hw;
5616        cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5617        cp->enable_int = cnic_enable_bnx2x_int;
5618        cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5619        if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5620                cp->ack_int = cnic_ack_bnx2x_e2_msix;
5621                cp->arm_int = cnic_arm_bnx2x_e2_msix;
5622        } else {
5623                cp->ack_int = cnic_ack_bnx2x_msix;
5624                cp->arm_int = cnic_arm_bnx2x_msix;
5625        }
5626        cp->close_conn = cnic_close_bnx2x_conn;
5627        return cdev;
5628}
5629
5630static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5631{
5632        struct ethtool_drvinfo drvinfo;
5633        struct cnic_dev *cdev = NULL;
5634
5635        if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5636                memset(&drvinfo, 0, sizeof(drvinfo));
5637                dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5638
5639                if (!strcmp(drvinfo.driver, "bnx2"))
5640                        cdev = init_bnx2_cnic(dev);
5641                if (!strcmp(drvinfo.driver, "bnx2x"))
5642                        cdev = init_bnx2x_cnic(dev);
5643                if (cdev) {
5644                        write_lock(&cnic_dev_lock);
5645                        list_add(&cdev->list, &cnic_dev_list);
5646                        write_unlock(&cnic_dev_lock);
5647                }
5648        }
5649        return cdev;
5650}
5651
5652static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
5653                              u16 vlan_id)
5654{
5655        int if_type;
5656
5657        for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5658                struct cnic_ulp_ops *ulp_ops;
5659                void *ctx;
5660
5661                mutex_lock(&cnic_lock);
5662                ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
5663                                                lockdep_is_held(&cnic_lock));
5664                if (!ulp_ops || !ulp_ops->indicate_netevent) {
5665                        mutex_unlock(&cnic_lock);
5666                        continue;
5667                }
5668
5669                ctx = cp->ulp_handle[if_type];
5670
5671                set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
5672                mutex_unlock(&cnic_lock);
5673
5674                ulp_ops->indicate_netevent(ctx, event, vlan_id);
5675
5676                clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
5677        }
5678}
5679
5680/* netdev event handler */
5681static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5682                                                         void *ptr)
5683{
5684        struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
5685        struct cnic_dev *dev;
5686        int new_dev = 0;
5687
5688        dev = cnic_from_netdev(netdev);
5689
5690        if (!dev && event == NETDEV_REGISTER) {
5691                /* Check for the hot-plug device */
5692                dev = is_cnic_dev(netdev);
5693                if (dev) {
5694                        new_dev = 1;
5695                        cnic_hold(dev);
5696                }
5697        }
5698        if (dev) {
5699                struct cnic_local *cp = dev->cnic_priv;
5700
5701                if (new_dev)
5702                        cnic_ulp_init(dev);
5703                else if (event == NETDEV_UNREGISTER)
5704                        cnic_ulp_exit(dev);
5705
5706                if (event == NETDEV_UP) {
5707                        if (cnic_register_netdev(dev) != 0) {
5708                                cnic_put(dev);
5709                                goto done;
5710                        }
5711                        if (!cnic_start_hw(dev))
5712                                cnic_ulp_start(dev);
5713                }
5714
5715                cnic_rcv_netevent(cp, event, 0);
5716
5717                if (event == NETDEV_GOING_DOWN) {
5718                        cnic_ulp_stop(dev);
5719                        cnic_stop_hw(dev);
5720                        cnic_unregister_netdev(dev);
5721                } else if (event == NETDEV_UNREGISTER) {
5722                        write_lock(&cnic_dev_lock);
5723                        list_del_init(&dev->list);
5724                        write_unlock(&cnic_dev_lock);
5725
5726                        cnic_put(dev);
5727                        cnic_free_dev(dev);
5728                        goto done;
5729                }
5730                cnic_put(dev);
5731        } else {
5732                struct net_device *realdev;
5733                u16 vid;
5734
5735                vid = cnic_get_vlan(netdev, &realdev);
5736                if (realdev) {
5737                        dev = cnic_from_netdev(realdev);
5738                        if (dev) {
5739                                vid |= VLAN_CFI_MASK;   /* make non-zero */
5740                                cnic_rcv_netevent(dev->cnic_priv, event, vid);
5741                                cnic_put(dev);
5742                        }
5743                }
5744        }
5745done:
5746        return NOTIFY_DONE;
5747}
5748
5749static struct notifier_block cnic_netdev_notifier = {
5750        .notifier_call = cnic_netdev_event
5751};
5752
5753static void cnic_release(void)
5754{
5755        struct cnic_uio_dev *udev;
5756
5757        while (!list_empty(&cnic_udev_list)) {
5758                udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5759                                  list);
5760                cnic_free_uio(udev);
5761        }
5762}
5763
5764static int __init cnic_init(void)
5765{
5766        int rc = 0;
5767
5768        pr_info("%s", version);
5769
5770        rc = register_netdevice_notifier(&cnic_netdev_notifier);
5771        if (rc) {
5772                cnic_release();
5773                return rc;
5774        }
5775
5776        cnic_wq = create_singlethread_workqueue("cnic_wq");
5777        if (!cnic_wq) {
5778                cnic_release();
5779                unregister_netdevice_notifier(&cnic_netdev_notifier);
5780                return -ENOMEM;
5781        }
5782
5783        return 0;
5784}
5785
5786static void __exit cnic_exit(void)
5787{
5788        unregister_netdevice_notifier(&cnic_netdev_notifier);
5789        cnic_release();
5790        destroy_workqueue(cnic_wq);
5791}
5792
5793module_init(cnic_init);
5794module_exit(cnic_exit);
5795