cnic.c 144.7 KB
Newer Older
1 2
/* cnic.c: Broadcom CNIC core network driver.
 *
3
 * Copyright (c) 2006-2012 Broadcom Corporation
4 5 6 7 8 9 10 11 12
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation.
 *
 * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
 * Modified and maintained by: Michael Chan <mchan@broadcom.com>
 */

13 14
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
#include <linux/module.h>

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/uio_driver.h>
#include <linux/in.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/ethtool.h>
#include <linux/if_vlan.h>
30
#include <linux/prefetch.h>
31
#include <linux/random.h>
32 33 34 35 36 37 38 39
#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
#define BCM_VLAN 1
#endif
#include <net/ip.h>
#include <net/tcp.h>
#include <net/route.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
40
#include <net/ip6_checksum.h>
41 42 43 44
#include <scsi/iscsi_if.h>

#include "cnic_if.h"
#include "bnx2.h"
45 46 47
#include "bnx2x/bnx2x_reg.h"
#include "bnx2x/bnx2x_fw_defs.h"
#include "bnx2x/bnx2x_hsi.h"
48 49
#include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
#include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
50
#include "../../../scsi/bnx2fc/bnx2fc_constants.h"
51 52 53 54 55 56 57 58 59 60 61 62 63 64
#include "cnic.h"
#include "cnic_defs.h"

#define DRV_MODULE_NAME		"cnic"

static char version[] __devinitdata =
	"Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";

MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
	      "Chen (zongxi@broadcom.com");
MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(CNIC_MODULE_VERSION);

65
/* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
66
static LIST_HEAD(cnic_dev_list);
67
static LIST_HEAD(cnic_udev_list);
68 69 70
static DEFINE_RWLOCK(cnic_dev_lock);
static DEFINE_MUTEX(cnic_lock);

71 72 73 74 75 76 77 78
static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];

/* helper function, assuming cnic_lock is held */
static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
{
	return rcu_dereference_protected(cnic_ulp_tbl[type],
					 lockdep_is_held(&cnic_lock));
}
79 80

static int cnic_service_bnx2(void *, void *);
81
static int cnic_service_bnx2x(void *, void *);
82 83 84 85 86 87 88 89
static int cnic_ctl(void *, struct cnic_ctl_info *);

static struct cnic_ops cnic_bnx2_ops = {
	.cnic_owner	= THIS_MODULE,
	.cnic_handler	= cnic_service_bnx2,
	.cnic_ctl	= cnic_ctl,
};

90 91 92 93 94 95
static struct cnic_ops cnic_bnx2x_ops = {
	.cnic_owner	= THIS_MODULE,
	.cnic_handler	= cnic_service_bnx2x,
	.cnic_ctl	= cnic_ctl,
};

96 97
static struct workqueue_struct *cnic_wq;

M
Michael Chan 已提交
98 99
static void cnic_shutdown_rings(struct cnic_dev *);
static void cnic_init_rings(struct cnic_dev *);
100 101 102 103
static int cnic_cm_set_pg(struct cnic_sock *);

static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
{
M
Michael Chan 已提交
104 105
	struct cnic_uio_dev *udev = uinfo->priv;
	struct cnic_dev *dev;
106 107 108 109

	if (!capable(CAP_NET_ADMIN))
		return -EPERM;

M
Michael Chan 已提交
110
	if (udev->uio_dev != -1)
111 112
		return -EBUSY;

M
Michael Chan 已提交
113
	rtnl_lock();
M
Michael Chan 已提交
114 115
	dev = udev->dev;

116
	if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
M
Michael Chan 已提交
117 118 119 120
		rtnl_unlock();
		return -ENODEV;
	}

M
Michael Chan 已提交
121
	udev->uio_dev = iminor(inode);
122

123
	cnic_shutdown_rings(dev);
M
Michael Chan 已提交
124 125
	cnic_init_rings(dev);
	rtnl_unlock();
126 127 128 129 130 131

	return 0;
}

static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
{
M
Michael Chan 已提交
132
	struct cnic_uio_dev *udev = uinfo->priv;
133

M
Michael Chan 已提交
134
	udev->uio_dev = -1;
135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173
	return 0;
}

static inline void cnic_hold(struct cnic_dev *dev)
{
	atomic_inc(&dev->ref_count);
}

static inline void cnic_put(struct cnic_dev *dev)
{
	atomic_dec(&dev->ref_count);
}

static inline void csk_hold(struct cnic_sock *csk)
{
	atomic_inc(&csk->ref_count);
}

static inline void csk_put(struct cnic_sock *csk)
{
	atomic_dec(&csk->ref_count);
}

static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
{
	struct cnic_dev *cdev;

	read_lock(&cnic_dev_lock);
	list_for_each_entry(cdev, &cnic_dev_list, list) {
		if (netdev == cdev->netdev) {
			cnic_hold(cdev);
			read_unlock(&cnic_dev_lock);
			return cdev;
		}
	}
	read_unlock(&cnic_dev_lock);
	return NULL;
}

174 175 176 177 178 179 180 181 182 183
static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
{
	atomic_inc(&ulp_ops->ref_count);
}

static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
{
	atomic_dec(&ulp_ops->ref_count);
}

184 185 186 187 188 189 190 191 192 193 194 195 196 197
static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;
	struct drv_ctl_io *io = &info.data.io;

	info.cmd = DRV_CTL_CTX_WR_CMD;
	io->cid_addr = cid_addr;
	io->offset = off;
	io->data = val;
	ethdev->drv_ctl(dev->netdev, &info);
}

198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227
static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;
	struct drv_ctl_io *io = &info.data.io;

	info.cmd = DRV_CTL_CTXTBL_WR_CMD;
	io->offset = off;
	io->dma_addr = addr;
	ethdev->drv_ctl(dev->netdev, &info);
}

static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;
	struct drv_ctl_l2_ring *ring = &info.data.ring;

	if (start)
		info.cmd = DRV_CTL_START_L2_CMD;
	else
		info.cmd = DRV_CTL_STOP_L2_CMD;

	ring->cid = cid;
	ring->client_id = cl_id;
	ethdev->drv_ctl(dev->netdev, &info);
}

228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253
static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;
	struct drv_ctl_io *io = &info.data.io;

	info.cmd = DRV_CTL_IO_WR_CMD;
	io->offset = off;
	io->data = val;
	ethdev->drv_ctl(dev->netdev, &info);
}

static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;
	struct drv_ctl_io *io = &info.data.io;

	info.cmd = DRV_CTL_IO_RD_CMD;
	io->offset = off;
	ethdev->drv_ctl(dev->netdev, &info);
	return io->data;
}

254 255 256 257 258
static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;
259 260
	struct fcoe_capabilities *fcoe_cap =
		&info.data.register_data.fcoe_features;
261

262
	if (reg) {
263
		info.cmd = DRV_CTL_ULP_REGISTER_CMD;
264 265 266
		if (ulp_type == CNIC_ULP_FCOE && dev->fcoe_cap)
			memcpy(fcoe_cap, dev->fcoe_cap, sizeof(*fcoe_cap));
	} else {
267
		info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;
268
	}
269 270 271 272 273

	info.data.ulp_type = ulp_type;
	ethdev->drv_ctl(dev->netdev, &info);
}

274 275 276 277 278
static int cnic_in_use(struct cnic_sock *csk)
{
	return test_bit(SK_F_INUSE, &csk->flags);
}

279
static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
280 281 282 283 284
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;

285 286
	info.cmd = cmd;
	info.data.credit.credit_count = count;
287 288 289
	ethdev->drv_ctl(dev->netdev, &info);
}

290 291 292 293
static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
{
	u32 i;

294 295 296
	if (!cp->ctx_tbl)
		return -EINVAL;

297
	for (i = 0; i < cp->max_cid_space; i++) {
298 299 300 301 302 303 304 305
		if (cp->ctx_tbl[i].cid == cid) {
			*l5_cid = i;
			return 0;
		}
	}
	return -EINVAL;
}

306 307 308 309 310 311 312 313
static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
			   struct cnic_sock *csk)
{
	struct iscsi_path path_req;
	char *buf = NULL;
	u16 len = 0;
	u32 msg_type = ISCSI_KEVENT_IF_DOWN;
	struct cnic_ulp_ops *ulp_ops;
M
Michael Chan 已提交
314
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
315
	int rc = 0, retry = 0;
316

M
Michael Chan 已提交
317
	if (!udev || udev->uio_dev == -1)
318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339
		return -ENODEV;

	if (csk) {
		len = sizeof(path_req);
		buf = (char *) &path_req;
		memset(&path_req, 0, len);

		msg_type = ISCSI_KEVENT_PATH_REQ;
		path_req.handle = (u64) csk->l5_cid;
		if (test_bit(SK_F_IPV6, &csk->flags)) {
			memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
			       sizeof(struct in6_addr));
			path_req.ip_addr_len = 16;
		} else {
			memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
			       sizeof(struct in_addr));
			path_req.ip_addr_len = 4;
		}
		path_req.vlan_id = csk->vlan_id;
		path_req.pmtu = csk->mtu;
	}

M
Michael Chan 已提交
340 341 342 343 344 345 346 347 348 349 350 351 352 353 354
	while (retry < 3) {
		rc = 0;
		rcu_read_lock();
		ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
		if (ulp_ops)
			rc = ulp_ops->iscsi_nl_send_msg(
				cp->ulp_handle[CNIC_ULP_ISCSI],
				msg_type, buf, len);
		rcu_read_unlock();
		if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
			break;

		msleep(100);
		retry++;
	}
355
	return rc;
356 357
}

358 359
static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);

360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380
static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
				  char *buf, u16 len)
{
	int rc = -EINVAL;

	switch (msg_type) {
	case ISCSI_UEVENT_PATH_UPDATE: {
		struct cnic_local *cp;
		u32 l5_cid;
		struct cnic_sock *csk;
		struct iscsi_path *path_resp;

		if (len < sizeof(*path_resp))
			break;

		path_resp = (struct iscsi_path *) buf;
		cp = dev->cnic_priv;
		l5_cid = (u32) path_resp->handle;
		if (l5_cid >= MAX_CM_SK_TBL_SZ)
			break;

381 382 383 384 385 386
		rcu_read_lock();
		if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
			rc = -ENODEV;
			rcu_read_unlock();
			break;
		}
387 388
		csk = &cp->csk_tbl[l5_cid];
		csk_hold(csk);
389 390 391
		if (cnic_in_use(csk) &&
		    test_bit(SK_F_CONNECT_START, &csk->flags)) {

392 393
			csk->vlan_id = path_resp->vlan_id;

394 395 396 397 398 399 400
			memcpy(csk->ha, path_resp->mac_addr, 6);
			if (test_bit(SK_F_IPV6, &csk->flags))
				memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
				       sizeof(struct in6_addr));
			else
				memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
				       sizeof(struct in_addr));
401 402

			if (is_valid_ether_addr(csk->ha)) {
403
				cnic_cm_set_pg(csk);
404 405 406 407 408 409 410
			} else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
				!test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {

				cnic_cm_upcall(cp, csk,
					L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
				clear_bit(SK_F_CONNECT_START, &csk->flags);
			}
411 412
		}
		csk_put(csk);
413
		rcu_read_unlock();
414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467
		rc = 0;
	}
	}

	return rc;
}

static int cnic_offld_prep(struct cnic_sock *csk)
{
	if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
		return 0;

	if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
		clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
		return 0;
	}

	return 1;
}

static int cnic_close_prep(struct cnic_sock *csk)
{
	clear_bit(SK_F_CONNECT_START, &csk->flags);
	smp_mb__after_clear_bit();

	if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
		while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
			msleep(1);

		return 1;
	}
	return 0;
}

static int cnic_abort_prep(struct cnic_sock *csk)
{
	clear_bit(SK_F_CONNECT_START, &csk->flags);
	smp_mb__after_clear_bit();

	while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
		msleep(1);

	if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
		csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
		return 1;
	}

	return 0;
}

int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
{
	struct cnic_dev *dev;

R
roel kluin 已提交
468
	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
469
		pr_err("%s: Bad type %d\n", __func__, ulp_type);
470 471 472
		return -EINVAL;
	}
	mutex_lock(&cnic_lock);
473
	if (cnic_ulp_tbl_prot(ulp_type)) {
474 475
		pr_err("%s: Type %d has already been registered\n",
		       __func__, ulp_type);
476 477 478 479 480 481 482 483 484 485 486 487
		mutex_unlock(&cnic_lock);
		return -EBUSY;
	}

	read_lock(&cnic_dev_lock);
	list_for_each_entry(dev, &cnic_dev_list, list) {
		struct cnic_local *cp = dev->cnic_priv;

		clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
	}
	read_unlock(&cnic_dev_lock);

488
	atomic_set(&ulp_ops->ref_count, 0);
489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507
	rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
	mutex_unlock(&cnic_lock);

	/* Prevent race conditions with netdev_event */
	rtnl_lock();
	list_for_each_entry(dev, &cnic_dev_list, list) {
		struct cnic_local *cp = dev->cnic_priv;

		if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
			ulp_ops->cnic_init(dev);
	}
	rtnl_unlock();

	return 0;
}

int cnic_unregister_driver(int ulp_type)
{
	struct cnic_dev *dev;
508 509
	struct cnic_ulp_ops *ulp_ops;
	int i = 0;
510

R
roel kluin 已提交
511
	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
512
		pr_err("%s: Bad type %d\n", __func__, ulp_type);
513 514 515
		return -EINVAL;
	}
	mutex_lock(&cnic_lock);
516
	ulp_ops = cnic_ulp_tbl_prot(ulp_type);
517
	if (!ulp_ops) {
518 519
		pr_err("%s: Type %d has not been registered\n",
		       __func__, ulp_type);
520 521 522 523 524 525 526
		goto out_unlock;
	}
	read_lock(&cnic_dev_lock);
	list_for_each_entry(dev, &cnic_dev_list, list) {
		struct cnic_local *cp = dev->cnic_priv;

		if (rcu_dereference(cp->ulp_ops[ulp_type])) {
527 528
			pr_err("%s: Type %d still has devices registered\n",
			       __func__, ulp_type);
529 530 531 532 533 534
			read_unlock(&cnic_dev_lock);
			goto out_unlock;
		}
	}
	read_unlock(&cnic_dev_lock);

535
	RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);
536 537 538

	mutex_unlock(&cnic_lock);
	synchronize_rcu();
539 540 541 542 543 544
	while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
		msleep(100);
		i++;
	}

	if (atomic_read(&ulp_ops->ref_count) != 0)
545
		netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561
	return 0;

out_unlock:
	mutex_unlock(&cnic_lock);
	return -EINVAL;
}

static int cnic_start_hw(struct cnic_dev *);
static void cnic_stop_hw(struct cnic_dev *);

static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
				void *ulp_ctx)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_ulp_ops *ulp_ops;

R
roel kluin 已提交
562
	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
563
		pr_err("%s: Bad type %d\n", __func__, ulp_type);
564 565 566
		return -EINVAL;
	}
	mutex_lock(&cnic_lock);
567
	if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
568 569
		pr_err("%s: Driver with type %d has not been registered\n",
		       __func__, ulp_type);
570 571 572 573
		mutex_unlock(&cnic_lock);
		return -EAGAIN;
	}
	if (rcu_dereference(cp->ulp_ops[ulp_type])) {
574 575
		pr_err("%s: Type %d has already been registered to this device\n",
		       __func__, ulp_type);
576 577 578 579 580 581
		mutex_unlock(&cnic_lock);
		return -EBUSY;
	}

	clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
	cp->ulp_handle[ulp_type] = ulp_ctx;
582
	ulp_ops = cnic_ulp_tbl_prot(ulp_type);
583 584 585 586 587 588 589 590 591
	rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
	cnic_hold(dev);

	if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
		if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
			ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);

	mutex_unlock(&cnic_lock);

592 593
	cnic_ulp_ctl(dev, ulp_type, true);

594 595 596 597 598 599 600 601
	return 0;

}
EXPORT_SYMBOL(cnic_register_driver);

static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
{
	struct cnic_local *cp = dev->cnic_priv;
602
	int i = 0;
603

R
roel kluin 已提交
604
	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
605
		pr_err("%s: Bad type %d\n", __func__, ulp_type);
606 607 608 609
		return -EINVAL;
	}
	mutex_lock(&cnic_lock);
	if (rcu_dereference(cp->ulp_ops[ulp_type])) {
610
		RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
611 612
		cnic_put(dev);
	} else {
613 614
		pr_err("%s: device not registered to this ulp type %d\n",
		       __func__, ulp_type);
615 616 617 618 619
		mutex_unlock(&cnic_lock);
		return -EINVAL;
	}
	mutex_unlock(&cnic_lock);

620 621
	if (ulp_type == CNIC_ULP_ISCSI)
		cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
622 623
	else if (ulp_type == CNIC_ULP_FCOE)
		dev->fcoe_cap = NULL;
624

625 626
	synchronize_rcu();

627 628 629 630 631 632
	while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
	       i < 20) {
		msleep(100);
		i++;
	}
	if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
633
		netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
634

635 636
	cnic_ulp_ctl(dev, ulp_type, false);

637 638 639 640
	return 0;
}
EXPORT_SYMBOL(cnic_unregister_driver);

641 642
static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
			    u32 next)
643 644 645
{
	id_tbl->start = start_id;
	id_tbl->max = size;
646
	id_tbl->next = next;
647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725
	spin_lock_init(&id_tbl->lock);
	id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
	if (!id_tbl->table)
		return -ENOMEM;

	return 0;
}

static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
{
	kfree(id_tbl->table);
	id_tbl->table = NULL;
}

static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
{
	int ret = -1;

	id -= id_tbl->start;
	if (id >= id_tbl->max)
		return ret;

	spin_lock(&id_tbl->lock);
	if (!test_bit(id, id_tbl->table)) {
		set_bit(id, id_tbl->table);
		ret = 0;
	}
	spin_unlock(&id_tbl->lock);
	return ret;
}

/* Returns -1 if not successful */
static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
{
	u32 id;

	spin_lock(&id_tbl->lock);
	id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
	if (id >= id_tbl->max) {
		id = -1;
		if (id_tbl->next != 0) {
			id = find_first_zero_bit(id_tbl->table, id_tbl->next);
			if (id >= id_tbl->next)
				id = -1;
		}
	}

	if (id < id_tbl->max) {
		set_bit(id, id_tbl->table);
		id_tbl->next = (id + 1) & (id_tbl->max - 1);
		id += id_tbl->start;
	}

	spin_unlock(&id_tbl->lock);

	return id;
}

static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
{
	if (id == -1)
		return;

	id -= id_tbl->start;
	if (id >= id_tbl->max)
		return;

	clear_bit(id, id_tbl->table);
}

static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
{
	int i;

	if (!dma->pg_arr)
		return;

	for (i = 0; i < dma->num_pages; i++) {
		if (dma->pg_arr[i]) {
M
Michael Chan 已提交
726 727
			dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
					  dma->pg_arr[i], dma->pg_map_arr[i]);
728 729 730 731
			dma->pg_arr[i] = NULL;
		}
	}
	if (dma->pgtbl) {
M
Michael Chan 已提交
732 733
		dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
				  dma->pgtbl, dma->pgtbl_map);
734 735 736 737 738 739 740 741 742 743
		dma->pgtbl = NULL;
	}
	kfree(dma->pg_arr);
	dma->pg_arr = NULL;
	dma->num_pages = 0;
}

static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
{
	int i;
M
Michael Chan 已提交
744
	__le32 *page_table = (__le32 *) dma->pgtbl;
745 746 747

	for (i = 0; i < dma->num_pages; i++) {
		/* Each entry needs to be in big endian format. */
M
Michael Chan 已提交
748
		*page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
749
		page_table++;
M
Michael Chan 已提交
750
		*page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
751 752 753 754
		page_table++;
	}
}

755 756 757
static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
{
	int i;
M
Michael Chan 已提交
758
	__le32 *page_table = (__le32 *) dma->pgtbl;
759 760 761

	for (i = 0; i < dma->num_pages; i++) {
		/* Each entry needs to be in little endian format. */
M
Michael Chan 已提交
762
		*page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
763
		page_table++;
M
Michael Chan 已提交
764
		*page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
765 766 767 768
		page_table++;
	}
}

769 770 771 772 773 774 775 776 777 778 779 780 781 782 783
static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
			  int pages, int use_pg_tbl)
{
	int i, size;
	struct cnic_local *cp = dev->cnic_priv;

	size = pages * (sizeof(void *) + sizeof(dma_addr_t));
	dma->pg_arr = kzalloc(size, GFP_ATOMIC);
	if (dma->pg_arr == NULL)
		return -ENOMEM;

	dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
	dma->num_pages = pages;

	for (i = 0; i < pages; i++) {
M
Michael Chan 已提交
784 785 786 787
		dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
						    BCM_PAGE_SIZE,
						    &dma->pg_map_arr[i],
						    GFP_ATOMIC);
788 789 790 791 792 793 794 795
		if (dma->pg_arr[i] == NULL)
			goto error;
	}
	if (!use_pg_tbl)
		return 0;

	dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
			  ~(BCM_PAGE_SIZE - 1);
M
Michael Chan 已提交
796 797
	dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
					&dma->pgtbl_map, GFP_ATOMIC);
798 799 800 801 802 803 804 805 806 807 808 809
	if (dma->pgtbl == NULL)
		goto error;

	cp->setup_pgtbl(dev, dma);

	return 0;

error:
	cnic_free_dma(dev, dma);
	return -ENOMEM;
}

M
Michael Chan 已提交
810 811 812 813 814 815 816
static void cnic_free_context(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int i;

	for (i = 0; i < cp->ctx_blks; i++) {
		if (cp->ctx_arr[i].ctx) {
M
Michael Chan 已提交
817 818 819
			dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
					  cp->ctx_arr[i].ctx,
					  cp->ctx_arr[i].mapping);
M
Michael Chan 已提交
820 821 822 823 824
			cp->ctx_arr[i].ctx = NULL;
		}
	}
}

M
Michael Chan 已提交
825
static void __cnic_free_uio(struct cnic_uio_dev *udev)
826
{
M
Michael Chan 已提交
827
	uio_unregister_device(&udev->cnic_uinfo);
M
Michael Chan 已提交
828

M
Michael Chan 已提交
829 830 831 832
	if (udev->l2_buf) {
		dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
				  udev->l2_buf, udev->l2_buf_map);
		udev->l2_buf = NULL;
833 834
	}

M
Michael Chan 已提交
835 836 837 838
	if (udev->l2_ring) {
		dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
				  udev->l2_ring, udev->l2_ring_map);
		udev->l2_ring = NULL;
839
	}
840 841 842

	pci_dev_put(udev->pdev);
	kfree(udev);
M
Michael Chan 已提交
843 844
}

M
Michael Chan 已提交
845
static void cnic_free_uio(struct cnic_uio_dev *udev)
M
Michael Chan 已提交
846
{
M
Michael Chan 已提交
847
	if (!udev)
M
Michael Chan 已提交
848 849
		return;

850 851 852
	write_lock(&cnic_dev_lock);
	list_del_init(&udev->list);
	write_unlock(&cnic_dev_lock);
M
Michael Chan 已提交
853
	__cnic_free_uio(udev);
M
Michael Chan 已提交
854 855 856 857 858
}

static void cnic_free_resc(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
859
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
860

M
Michael Chan 已提交
861
	if (udev) {
862
		udev->dev = NULL;
M
Michael Chan 已提交
863
		cp->udev = NULL;
M
Michael Chan 已提交
864
	}
865

M
Michael Chan 已提交
866
	cnic_free_context(dev);
867 868 869 870 871 872
	kfree(cp->ctx_arr);
	cp->ctx_arr = NULL;
	cp->ctx_blks = 0;

	cnic_free_dma(dev, &cp->gbl_buf_info);
	cnic_free_dma(dev, &cp->kwq_info);
873
	cnic_free_dma(dev, &cp->kwq_16_data_info);
M
Michael Chan 已提交
874
	cnic_free_dma(dev, &cp->kcq2.dma);
875
	cnic_free_dma(dev, &cp->kcq1.dma);
876 877 878 879 880
	kfree(cp->iscsi_tbl);
	cp->iscsi_tbl = NULL;
	kfree(cp->ctx_tbl);
	cp->ctx_tbl = NULL;

M
Michael Chan 已提交
881
	cnic_free_id_tbl(&cp->fcoe_cid_tbl);
882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923
	cnic_free_id_tbl(&cp->cid_tbl);
}

static int cnic_alloc_context(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

	if (CHIP_NUM(cp) == CHIP_NUM_5709) {
		int i, k, arr_size;

		cp->ctx_blk_size = BCM_PAGE_SIZE;
		cp->cids_per_blk = BCM_PAGE_SIZE / 128;
		arr_size = BNX2_MAX_CID / cp->cids_per_blk *
			   sizeof(struct cnic_ctx);
		cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
		if (cp->ctx_arr == NULL)
			return -ENOMEM;

		k = 0;
		for (i = 0; i < 2; i++) {
			u32 j, reg, off, lo, hi;

			if (i == 0)
				off = BNX2_PG_CTX_MAP;
			else
				off = BNX2_ISCSI_CTX_MAP;

			reg = cnic_reg_rd_ind(dev, off);
			lo = reg >> 16;
			hi = reg & 0xffff;
			for (j = lo; j < hi; j += cp->cids_per_blk, k++)
				cp->ctx_arr[k].cid = j;
		}

		cp->ctx_blks = k;
		if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
			cp->ctx_blks = 0;
			return -ENOMEM;
		}

		for (i = 0; i < cp->ctx_blks; i++) {
			cp->ctx_arr[i].ctx =
M
Michael Chan 已提交
924 925 926 927
				dma_alloc_coherent(&dev->pcidev->dev,
						   BCM_PAGE_SIZE,
						   &cp->ctx_arr[i].mapping,
						   GFP_KERNEL);
928 929 930 931 932 933 934
			if (cp->ctx_arr[i].ctx == NULL)
				return -ENOMEM;
		}
	}
	return 0;
}

935 936 937 938 939 940 941 942 943 944 945
static u16 cnic_bnx2_next_idx(u16 idx)
{
	return idx + 1;
}

static u16 cnic_bnx2_hw_idx(u16 idx)
{
	return idx;
}

static u16 cnic_bnx2x_next_idx(u16 idx)
946
{
947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964
	idx++;
	if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
		idx++;

	return idx;
}

static u16 cnic_bnx2x_hw_idx(u16 idx)
{
	if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
		idx++;
	return idx;
}

static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
			  bool use_pg_tbl)
{
	int err, i, use_page_tbl = 0;
965 966
	struct kcqe **kcq;

967 968
	if (use_pg_tbl)
		use_page_tbl = 1;
969

970
	err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
971 972 973 974 975 976
	if (err)
		return err;

	kcq = (struct kcqe **) info->dma.pg_arr;
	info->kcq = kcq;

977 978 979
	info->next_idx = cnic_bnx2_next_idx;
	info->hw_idx = cnic_bnx2_hw_idx;
	if (use_pg_tbl)
980 981
		return 0;

982 983 984
	info->next_idx = cnic_bnx2x_next_idx;
	info->hw_idx = cnic_bnx2x_hw_idx;

985 986 987 988 989 990 991 992 993 994 995 996 997
	for (i = 0; i < KCQ_PAGE_CNT; i++) {
		struct bnx2x_bd_chain_next *next =
			(struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
		int j = i + 1;

		if (j >= KCQ_PAGE_CNT)
			j = 0;
		next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
		next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
	}
	return 0;
}

M
Michael Chan 已提交
998
static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
999 1000
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
1001 1002
	struct cnic_uio_dev *udev;

1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013
	read_lock(&cnic_dev_lock);
	list_for_each_entry(udev, &cnic_udev_list, list) {
		if (udev->pdev == dev->pcidev) {
			udev->dev = dev;
			cp->udev = udev;
			read_unlock(&cnic_dev_lock);
			return 0;
		}
	}
	read_unlock(&cnic_dev_lock);

M
Michael Chan 已提交
1014 1015 1016 1017 1018
	udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
	if (!udev)
		return -ENOMEM;

	udev->uio_dev = -1;
1019

M
Michael Chan 已提交
1020 1021 1022 1023 1024 1025 1026
	udev->dev = dev;
	udev->pdev = dev->pcidev;
	udev->l2_ring_size = pages * BCM_PAGE_SIZE;
	udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
					   &udev->l2_ring_map,
					   GFP_KERNEL | __GFP_COMP);
	if (!udev->l2_ring)
1027
		goto err_udev;
1028

M
Michael Chan 已提交
1029 1030 1031 1032 1033 1034
	udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
	udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
	udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
					  &udev->l2_buf_map,
					  GFP_KERNEL | __GFP_COMP);
	if (!udev->l2_buf)
1035
		goto err_dma;
1036

1037 1038 1039 1040 1041 1042
	write_lock(&cnic_dev_lock);
	list_add(&udev->list, &cnic_udev_list);
	write_unlock(&cnic_dev_lock);

	pci_dev_get(udev->pdev);

M
Michael Chan 已提交
1043 1044
	cp->udev = udev;

1045
	return 0;
1046 1047 1048 1049 1050 1051
 err_dma:
	dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
			  udev->l2_ring, udev->l2_ring_map);
 err_udev:
	kfree(udev);
	return -ENOMEM;
1052 1053
}

M
Michael Chan 已提交
1054 1055
static int cnic_init_uio(struct cnic_dev *dev)
{
1056
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
1057
	struct cnic_uio_dev *udev = cp->udev;
1058
	struct uio_info *uinfo;
M
Michael Chan 已提交
1059
	int ret = 0;
1060

M
Michael Chan 已提交
1061
	if (!udev)
1062
		return -ENOMEM;
1063

M
Michael Chan 已提交
1064 1065
	uinfo = &udev->cnic_uinfo;

1066 1067 1068 1069 1070
	uinfo->mem[0].addr = dev->netdev->base_addr;
	uinfo->mem[0].internal_addr = dev->regview;
	uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
	uinfo->mem[0].memtype = UIO_MEM_PHYS;

1071
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1072
		uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
M
Michael Chan 已提交
1073
					PAGE_MASK;
1074 1075 1076 1077 1078 1079
		if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
			uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
		else
			uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;

		uinfo->name = "bnx2_cnic";
1080 1081 1082
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
		uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
			PAGE_MASK;
1083
		uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1084 1085

		uinfo->name = "bnx2x_cnic";
1086 1087
	}

1088 1089
	uinfo->mem[1].memtype = UIO_MEM_LOGICAL;

M
Michael Chan 已提交
1090 1091
	uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
	uinfo->mem[2].size = udev->l2_ring_size;
1092 1093
	uinfo->mem[2].memtype = UIO_MEM_LOGICAL;

M
Michael Chan 已提交
1094 1095
	uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
	uinfo->mem[3].size = udev->l2_buf_size;
1096 1097 1098 1099 1100 1101 1102 1103
	uinfo->mem[3].memtype = UIO_MEM_LOGICAL;

	uinfo->version = CNIC_MODULE_VERSION;
	uinfo->irq = UIO_IRQ_CUSTOM;

	uinfo->open = cnic_uio_open;
	uinfo->release = cnic_uio_close;

1104 1105 1106
	if (udev->uio_dev == -1) {
		if (!uinfo->priv) {
			uinfo->priv = udev;
1107

1108 1109 1110 1111 1112
			ret = uio_register_device(&udev->pdev->dev, uinfo);
		}
	} else {
		cnic_init_rings(dev);
	}
1113

M
Michael Chan 已提交
1114
	return ret;
1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126
}

static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int ret;

	ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
	if (ret)
		goto error;
	cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;

1127
	ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1128 1129 1130 1131 1132 1133 1134
	if (ret)
		goto error;

	ret = cnic_alloc_context(dev);
	if (ret)
		goto error;

M
Michael Chan 已提交
1135
	ret = cnic_alloc_uio_rings(dev, 2);
1136 1137 1138
	if (ret)
		goto error;

M
Michael Chan 已提交
1139
	ret = cnic_init_uio(dev);
1140 1141
	if (ret)
		goto error;
1142 1143 1144 1145 1146 1147 1148 1149

	return 0;

error:
	cnic_free_resc(dev);
	return ret;
}

1150 1151 1152 1153
static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int ctx_blk_size = cp->ethdev->ctx_blk_size;
1154
	int total_mem, blks, i;
1155

1156
	total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1157 1158 1159 1160 1161 1162 1163
	blks = total_mem / ctx_blk_size;
	if (total_mem % ctx_blk_size)
		blks++;

	if (blks > cp->ethdev->ctx_tbl_len)
		return -ENOMEM;

1164
	cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1165 1166 1167 1168 1169
	if (cp->ctx_arr == NULL)
		return -ENOMEM;

	cp->ctx_blks = blks;
	cp->ctx_blk_size = ctx_blk_size;
M
Michael Chan 已提交
1170
	if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1171 1172 1173 1174 1175 1176 1177 1178
		cp->ctx_align = 0;
	else
		cp->ctx_align = ctx_blk_size;

	cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;

	for (i = 0; i < blks; i++) {
		cp->ctx_arr[i].ctx =
M
Michael Chan 已提交
1179 1180 1181
			dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
					   &cp->ctx_arr[i].mapping,
					   GFP_KERNEL);
1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199
		if (cp->ctx_arr[i].ctx == NULL)
			return -ENOMEM;

		if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
			if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
				cnic_free_context(dev);
				cp->ctx_blk_size += cp->ctx_align;
				i = -1;
				continue;
			}
		}
	}
	return 0;
}

static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
1200 1201
	struct cnic_eth_dev *ethdev = cp->ethdev;
	u32 start_cid = ethdev->starting_cid;
1202 1203 1204
	int i, j, n, ret, pages;
	struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;

1205 1206
	cp->iro_arr = ethdev->iro_arr;

1207
	cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1208
	cp->iscsi_start_cid = start_cid;
M
Michael Chan 已提交
1209 1210
	cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;

1211
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1212
		cp->max_cid_space += dev->max_fcoe_conn;
M
Michael Chan 已提交
1213 1214 1215 1216 1217
		cp->fcoe_init_cid = ethdev->fcoe_init_cid;
		if (!cp->fcoe_init_cid)
			cp->fcoe_init_cid = 0x10;
	}

1218 1219 1220 1221 1222 1223
	cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
				GFP_KERNEL);
	if (!cp->iscsi_tbl)
		goto error;

	cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1224
				cp->max_cid_space, GFP_KERNEL);
1225 1226 1227 1228 1229 1230 1231 1232
	if (!cp->ctx_tbl)
		goto error;

	for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
		cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
		cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
	}

M
Michael Chan 已提交
1233 1234 1235
	for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
		cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;

1236
	pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1237 1238 1239 1240 1241 1242 1243
		PAGE_SIZE;

	ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
	if (ret)
		return -ENOMEM;

	n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1244
	for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1245 1246 1247 1248 1249 1250 1251 1252 1253 1254
		long off = CNIC_KWQ16_DATA_SIZE * (i % n);

		cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
		cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
						   off;

		if ((i % n) == (n - 1))
			j++;
	}

1255
	ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1256 1257 1258
	if (ret)
		goto error;

1259 1260
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
		ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
M
Michael Chan 已提交
1261 1262 1263 1264
		if (ret)
			goto error;
	}

1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277
	pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
	ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
	if (ret)
		goto error;

	ret = cnic_alloc_bnx2x_context(dev);
	if (ret)
		goto error;

	cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;

	cp->l2_rx_ring_size = 15;

M
Michael Chan 已提交
1278
	ret = cnic_alloc_uio_rings(dev, 4);
1279 1280 1281
	if (ret)
		goto error;

M
Michael Chan 已提交
1282
	ret = cnic_init_uio(dev);
1283 1284 1285 1286 1287 1288 1289 1290 1291 1292
	if (ret)
		goto error;

	return 0;

error:
	cnic_free_resc(dev);
	return -ENOMEM;
}

1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310
static inline u32 cnic_kwq_avail(struct cnic_local *cp)
{
	return cp->max_kwq_idx -
		((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
}

static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
				  u32 num_wqes)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct kwqe *prod_qe;
	u16 prod, sw_prod, i;

	if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
		return -EAGAIN;		/* bnx2 is down */

	spin_lock_bh(&cp->cnic_ulp_lock);
	if (num_wqes > cnic_kwq_avail(cp) &&
1311
	    !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1312 1313 1314 1315
		spin_unlock_bh(&cp->cnic_ulp_lock);
		return -EAGAIN;
	}

1316
	clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333

	prod = cp->kwq_prod_idx;
	sw_prod = prod & MAX_KWQ_IDX;
	for (i = 0; i < num_wqes; i++) {
		prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
		memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
		prod++;
		sw_prod = prod & MAX_KWQ_IDX;
	}
	cp->kwq_prod_idx = prod;

	CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);

	spin_unlock_bh(&cp->cnic_ulp_lock);
	return 0;
}

1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351
static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
				   union l5cm_specific_data *l5_data)
{
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
	dma_addr_t map;

	map = ctx->kwqe_data_mapping;
	l5_data->phy_address.lo = (u64) map & 0xffffffff;
	l5_data->phy_address.hi = (u64) map >> 32;
	return ctx->kwqe_data;
}

static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
				u32 type, union l5cm_specific_data *l5_data)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct l5cm_spe kwqe;
	struct kwqe_16 *kwq[1];
1352
	u16 type_16;
1353 1354 1355 1356
	int ret;

	kwqe.hdr.conn_and_cmd_data =
		cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1357
			     BNX2X_HW_CID(cp, cid)));
1358 1359 1360 1361 1362 1363

	type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
	type_16 |= (cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
		   SPE_HDR_FUNCTION_ID;

	kwqe.hdr.type = cpu_to_le16(type_16);
1364
	kwqe.hdr.reserved1 = 0;
1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376
	kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
	kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);

	kwq[0] = (struct kwqe_16 *) &kwqe;

	spin_lock_bh(&cp->cnic_ulp_lock);
	ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
	spin_unlock_bh(&cp->cnic_ulp_lock);

	if (ret == 1)
		return 0;

1377
	return ret;
1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398
}

static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
				   struct kcqe *cqes[], u32 num_cqes)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_ulp_ops *ulp_ops;

	rcu_read_lock();
	ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
	if (likely(ulp_ops)) {
		ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
					  cqes, num_cqes);
	}
	rcu_read_unlock();
}

static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1399 1400
	int hq_bds, pages;
	u32 pfid = cp->pfid;
1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416

	cp->num_iscsi_tasks = req1->num_tasks_per_conn;
	cp->num_ccells = req1->num_ccells_per_conn;
	cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
			      cp->num_iscsi_tasks;
	cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
			BNX2X_ISCSI_R2TQE_SIZE;
	cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
	pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
	hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
	cp->num_cqs = req1->num_cqs;

	if (!dev->max_iscsi_conn)
		return 0;

	/* init Tstorm RAM */
1417
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1418
		  req1->rq_num_wqes);
1419
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1420 1421
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1422
		 TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1423
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1424
		  TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1425 1426 1427 1428
		  req1->num_tasks_per_conn);

	/* init Ustorm RAM */
	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1429
		  USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1430
		  req1->rq_buffer_size);
1431
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1432 1433
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1434
		 USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1435
	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1436
		  USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1437
		  req1->num_tasks_per_conn);
1438
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1439
		  req1->rq_num_wqes);
1440
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1441
		  req1->cq_num_wqes);
1442
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1443 1444 1445
		  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

	/* init Xstorm RAM */
1446
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1447 1448
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1449
		 XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1450
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1451
		  XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1452
		  req1->num_tasks_per_conn);
1453
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1454
		  hq_bds);
1455
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1456
		  req1->num_tasks_per_conn);
1457
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1458 1459 1460
		  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

	/* init Cstorm RAM */
1461
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1462 1463
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1464
		 CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1465
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1466
		  CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1467
		  req1->num_tasks_per_conn);
1468
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1469
		  req1->cq_num_wqes);
1470
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1471 1472 1473 1474 1475 1476 1477 1478 1479
		  hq_bds);

	return 0;
}

static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
	struct cnic_local *cp = dev->cnic_priv;
1480
	u32 pfid = cp->pfid;
1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491
	struct iscsi_kcqe kcqe;
	struct kcqe *cqes[1];

	memset(&kcqe, 0, sizeof(kcqe));
	if (!dev->max_iscsi_conn) {
		kcqe.completion_status =
			ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
		goto done;
	}

	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1492
		TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1493
	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1494
		TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1495 1496 1497
		req2->error_bit_map[1]);

	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1498
		  USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1499
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
1500
		USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1501
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
1502
		USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1503 1504 1505
		req2->error_bit_map[1]);

	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1506
		  CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528

	kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;

done:
	kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);

	return 0;
}

static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

	if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
		struct cnic_iscsi *iscsi = ctx->proto.iscsi;

		cnic_free_dma(dev, &iscsi->hq_info);
		cnic_free_dma(dev, &iscsi->r2tq_info);
		cnic_free_dma(dev, &iscsi->task_array_info);
M
Michael Chan 已提交
1529 1530 1531
		cnic_free_id(&cp->cid_tbl, ctx->cid);
	} else {
		cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1532
	}
M
Michael Chan 已提交
1533

1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544
	ctx->cid = 0;
}

static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
{
	u32 cid;
	int ret, pages;
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
	struct cnic_iscsi *iscsi = ctx->proto.iscsi;

M
Michael Chan 已提交
1545 1546 1547 1548 1549 1550 1551 1552 1553 1554
	if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
		cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
		if (cid == -1) {
			ret = -ENOMEM;
			goto error;
		}
		ctx->cid = cid;
		return 0;
	}

1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626
	cid = cnic_alloc_new_id(&cp->cid_tbl);
	if (cid == -1) {
		ret = -ENOMEM;
		goto error;
	}

	ctx->cid = cid;
	pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;

	ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
	if (ret)
		goto error;

	pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
	ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
	if (ret)
		goto error;

	pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
	ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
	if (ret)
		goto error;

	return 0;

error:
	cnic_free_bnx2x_conn_resc(dev, l5_cid);
	return ret;
}

static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
				struct regpair *ctx_addr)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
	int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
	unsigned long align_off = 0;
	dma_addr_t ctx_map;
	void *ctx;

	if (cp->ctx_align) {
		unsigned long mask = cp->ctx_align - 1;

		if (cp->ctx_arr[blk].mapping & mask)
			align_off = cp->ctx_align -
				    (cp->ctx_arr[blk].mapping & mask);
	}
	ctx_map = cp->ctx_arr[blk].mapping + align_off +
		(off * BNX2X_CONTEXT_MEM_SIZE);
	ctx = cp->ctx_arr[blk].ctx + align_off +
	      (off * BNX2X_CONTEXT_MEM_SIZE);
	if (init)
		memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);

	ctx_addr->lo = ctx_map & 0xffffffff;
	ctx_addr->hi = (u64) ctx_map >> 32;
	return ctx;
}

static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
				u32 num)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct iscsi_kwqe_conn_offload1 *req1 =
			(struct iscsi_kwqe_conn_offload1 *) wqes[0];
	struct iscsi_kwqe_conn_offload2 *req2 =
			(struct iscsi_kwqe_conn_offload2 *) wqes[1];
	struct iscsi_kwqe_conn_offload3 *req3;
	struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
	struct cnic_iscsi *iscsi = ctx->proto.iscsi;
	u32 cid = ctx->cid;
1627
	u32 hw_cid = BNX2X_HW_CID(cp, cid);
1628 1629 1630
	struct iscsi_context *ictx;
	struct regpair context_addr;
	int i, j, n = 2, n_max;
1631
	u8 port = CNIC_PORT(cp);
1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682

	ctx->ctx_flags = 0;
	if (!req2->num_additional_wqes)
		return -EINVAL;

	n_max = req2->num_additional_wqes + 2;

	ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
	if (ictx == NULL)
		return -ENOMEM;

	req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];

	ictx->xstorm_ag_context.hq_prod = 1;

	ictx->xstorm_st_context.iscsi.first_burst_length =
		ISCSI_DEF_FIRST_BURST_LEN;
	ictx->xstorm_st_context.iscsi.max_send_pdu_length =
		ISCSI_DEF_MAX_RECV_SEG_LEN;
	ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
		req1->sq_page_table_addr_lo;
	ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
		req1->sq_page_table_addr_hi;
	ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
	ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
	ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
		iscsi->hq_info.pgtbl_map & 0xffffffff;
	ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
		(u64) iscsi->hq_info.pgtbl_map >> 32;
	ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
		iscsi->hq_info.pgtbl[0];
	ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
		iscsi->hq_info.pgtbl[1];
	ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
		iscsi->r2tq_info.pgtbl_map & 0xffffffff;
	ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
		(u64) iscsi->r2tq_info.pgtbl_map >> 32;
	ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
		iscsi->r2tq_info.pgtbl[0];
	ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
		iscsi->r2tq_info.pgtbl[1];
	ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
		iscsi->task_array_info.pgtbl_map & 0xffffffff;
	ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
		(u64) iscsi->task_array_info.pgtbl_map >> 32;
	ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
		BNX2X_ISCSI_PBL_NOT_CACHED;
	ictx->xstorm_st_context.iscsi.flags.flags |=
		XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
	ictx->xstorm_st_context.iscsi.flags.flags |=
		XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693
	ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
		ETH_P_8021Q;
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
		cp->port_mode == CHIP_2_PORT_MODE) {

		port = 0;
	}
	ictx->xstorm_st_context.common.flags =
		1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
	ictx->xstorm_st_context.common.flags =
		port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704

	ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
	/* TSTORM requires the base address of RQ DB & not PTE */
	ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
		req2->rq_page_table_addr_lo & PAGE_MASK;
	ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
		req2->rq_page_table_addr_hi;
	ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
	ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
	ictx->tstorm_st_context.tcp.flags2 |=
		TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1705 1706
	ictx->tstorm_st_context.tcp.ooo_support_mode =
		TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1707

1708
	ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1709 1710

	ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1711
		req2->rq_page_table_addr_lo;
1712
	ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1713
		req2->rq_page_table_addr_hi;
1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806
	ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
	ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
	ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
		iscsi->r2tq_info.pgtbl_map & 0xffffffff;
	ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
		(u64) iscsi->r2tq_info.pgtbl_map >> 32;
	ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
		iscsi->r2tq_info.pgtbl[0];
	ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
		iscsi->r2tq_info.pgtbl[1];
	ictx->ustorm_st_context.ring.cq_pbl_base.lo =
		req1->cq_page_table_addr_lo;
	ictx->ustorm_st_context.ring.cq_pbl_base.hi =
		req1->cq_page_table_addr_hi;
	ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
	ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
	ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
	ictx->ustorm_st_context.task_pbe_cache_index =
		BNX2X_ISCSI_PBL_NOT_CACHED;
	ictx->ustorm_st_context.task_pdu_cache_index =
		BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;

	for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
		if (j == 3) {
			if (n >= n_max)
				break;
			req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
			j = 0;
		}
		ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
		ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
			req3->qp_first_pte[j].hi;
		ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
			req3->qp_first_pte[j].lo;
	}

	ictx->ustorm_st_context.task_pbl_base.lo =
		iscsi->task_array_info.pgtbl_map & 0xffffffff;
	ictx->ustorm_st_context.task_pbl_base.hi =
		(u64) iscsi->task_array_info.pgtbl_map >> 32;
	ictx->ustorm_st_context.tce_phy_addr.lo =
		iscsi->task_array_info.pgtbl[0];
	ictx->ustorm_st_context.tce_phy_addr.hi =
		iscsi->task_array_info.pgtbl[1];
	ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
	ictx->ustorm_st_context.num_cqs = cp->num_cqs;
	ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
	ictx->ustorm_st_context.negotiated_rx_and_flags |=
		ISCSI_DEF_MAX_BURST_LEN;
	ictx->ustorm_st_context.negotiated_rx |=
		ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
		USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;

	ictx->cstorm_st_context.hq_pbl_base.lo =
		iscsi->hq_info.pgtbl_map & 0xffffffff;
	ictx->cstorm_st_context.hq_pbl_base.hi =
		(u64) iscsi->hq_info.pgtbl_map >> 32;
	ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
	ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
	ictx->cstorm_st_context.task_pbl_base.lo =
		iscsi->task_array_info.pgtbl_map & 0xffffffff;
	ictx->cstorm_st_context.task_pbl_base.hi =
		(u64) iscsi->task_array_info.pgtbl_map >> 32;
	/* CSTORM and USTORM initialization is different, CSTORM requires
	 * CQ DB base & not PTE addr */
	ictx->cstorm_st_context.cq_db_base.lo =
		req1->cq_page_table_addr_lo & PAGE_MASK;
	ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
	ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
	ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
	for (i = 0; i < cp->num_cqs; i++) {
		ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
			ISCSI_INITIAL_SN;
		ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
			ISCSI_INITIAL_SN;
	}

	ictx->xstorm_ag_context.cdu_reserved =
		CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
				       ISCSI_CONNECTION_TYPE);
	ictx->ustorm_ag_context.cdu_usage =
		CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
				       ISCSI_CONNECTION_TYPE);
	return 0;

}

static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
				   u32 num, int *work)
{
	struct iscsi_kwqe_conn_offload1 *req1;
	struct iscsi_kwqe_conn_offload2 *req2;
	struct cnic_local *cp = dev->cnic_priv;
1807
	struct cnic_context *ctx;
1808 1809 1810
	struct iscsi_kcqe kcqe;
	struct kcqe *cqes[1];
	u32 l5_cid;
1811
	int ret = 0;
1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823

	if (num < 2) {
		*work = num;
		return -EINVAL;
	}

	req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
	req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
	if ((num - 2) < req2->num_additional_wqes) {
		*work = num;
		return -EINVAL;
	}
1824
	*work = 2 + req2->num_additional_wqes;
1825 1826 1827 1828 1829 1830 1831 1832 1833 1834

	l5_cid = req1->iscsi_conn_id;
	if (l5_cid >= MAX_ISCSI_TBL_SZ)
		return -EINVAL;

	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
	kcqe.iscsi_conn_id = l5_cid;
	kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;

1835 1836 1837 1838 1839 1840 1841
	ctx = &cp->ctx_tbl[l5_cid];
	if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
		kcqe.completion_status =
			ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
		goto done;
	}

1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859
	if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
		atomic_dec(&cp->iscsi_conn);
		goto done;
	}
	ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
	if (ret) {
		atomic_dec(&cp->iscsi_conn);
		ret = 0;
		goto done;
	}
	ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
	if (ret < 0) {
		cnic_free_bnx2x_conn_resc(dev, l5_cid);
		atomic_dec(&cp->iscsi_conn);
		goto done;
	}

	kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1860
	kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1861 1862 1863 1864

done:
	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1865
	return 0;
1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892
}


static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct iscsi_kwqe_conn_update *req =
		(struct iscsi_kwqe_conn_update *) kwqe;
	void *data;
	union l5cm_specific_data l5_data;
	u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
	int ret;

	if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
		return -EINVAL;

	data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
	if (!data)
		return -ENOMEM;

	memcpy(data, kwqe, sizeof(struct kwqe));

	ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
			req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
	return ret;
}

1893
static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1894 1895 1896
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1897 1898
	union l5cm_specific_data l5_data;
	int ret;
1899
	u32 hw_cid;
1900 1901 1902 1903

	init_waitqueue_head(&ctx->waitq);
	ctx->wait_cond = 0;
	memset(&l5_data, 0, sizeof(l5_data));
1904 1905 1906
	hw_cid = BNX2X_HW_CID(cp, ctx->cid);

	ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1907
				  hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1908

1909
	if (ret == 0) {
1910
		wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1911 1912 1913
		if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
			return -EBUSY;
	}
1914

1915
	return 0;
1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931
}

static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct iscsi_kwqe_conn_destroy *req =
		(struct iscsi_kwqe_conn_destroy *) kwqe;
	u32 l5_cid = req->reserved0;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
	int ret = 0;
	struct iscsi_kcqe kcqe;
	struct kcqe *cqes[1];

	if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
		goto skip_cfc_delete;

1932 1933 1934 1935 1936 1937 1938 1939 1940 1941
	if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
		unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;

		if (delta > (2 * HZ))
			delta = 0;

		set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
		queue_delayed_work(cnic_wq, &cp->delete_task, delta);
		goto destroy_reply;
	}
1942 1943 1944

	ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);

1945 1946 1947
skip_cfc_delete:
	cnic_free_bnx2x_conn_resc(dev, l5_cid);

1948 1949 1950 1951
	if (!ret) {
		atomic_dec(&cp->iscsi_conn);
		clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
	}
1952

1953
destroy_reply:
1954 1955 1956 1957 1958 1959 1960 1961 1962
	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
	kcqe.iscsi_conn_id = l5_cid;
	kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
	kcqe.iscsi_conn_context_id = req->context_id;

	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);

1963
	return 0;
1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
}

static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
				      struct l4_kwq_connect_req1 *kwqe1,
				      struct l4_kwq_connect_req3 *kwqe3,
				      struct l5cm_active_conn_buffer *conn_buf)
{
	struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
	struct l5cm_xstorm_conn_buffer *xstorm_buf =
		&conn_buf->xstorm_conn_buffer;
	struct l5cm_tstorm_conn_buffer *tstorm_buf =
		&conn_buf->tstorm_conn_buffer;
	struct regpair context_addr;
	u32 cid = BNX2X_SW_CID(kwqe1->cid);
	struct in6_addr src_ip, dst_ip;
	int i;
	u32 *addrp;

	addrp = (u32 *) &conn_addr->local_ip_addr;
	for (i = 0; i < 4; i++, addrp++)
		src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);

	addrp = (u32 *) &conn_addr->remote_ip_addr;
	for (i = 0; i < 4; i++, addrp++)
		dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);

	cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);

	xstorm_buf->context_addr.hi = context_addr.hi;
	xstorm_buf->context_addr.lo = context_addr.lo;
	xstorm_buf->mss = 0xffff;
	xstorm_buf->rcv_buf = kwqe3->rcv_buf;
	if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
		xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
	xstorm_buf->pseudo_header_checksum =
		swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));

	if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
		tstorm_buf->params |=
			L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
	if (kwqe3->ka_timeout) {
		tstorm_buf->ka_enable = 1;
		tstorm_buf->ka_timeout = kwqe3->ka_timeout;
		tstorm_buf->ka_interval = kwqe3->ka_interval;
		tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
	}
	tstorm_buf->max_rt_time = 0xffffffff;
}

static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
2016
	u32 pfid = cp->pfid;
2017 2018 2019
	u8 *mac = dev->mac_addr;

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2020
		 XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2021
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2022
		 XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2023
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2024
		 XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2025
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2026
		 XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2027
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2028
		 XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2029
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2030
		 XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2031 2032

	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2033
		 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2034
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2035
		 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2036 2037
		 mac[4]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2038
		 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2039
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2040
		 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2041 2042
		 mac[2]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2043
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2044
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2045
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060
		 mac[0]);
}

static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
{
	struct cnic_local *cp = dev->cnic_priv;
	u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
	u16 tstorm_flags = 0;

	if (tcp_ts) {
		xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
		tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
	}

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2061
		 XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
2062 2063

	CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
2064
		  TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097
}

static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
			      u32 num, int *work)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct l4_kwq_connect_req1 *kwqe1 =
		(struct l4_kwq_connect_req1 *) wqes[0];
	struct l4_kwq_connect_req3 *kwqe3;
	struct l5cm_active_conn_buffer *conn_buf;
	struct l5cm_conn_addr_params *conn_addr;
	union l5cm_specific_data l5_data;
	u32 l5_cid = kwqe1->pg_cid;
	struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
	int ret;

	if (num < 2) {
		*work = num;
		return -EINVAL;
	}

	if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
		*work = 3;
	else
		*work = 2;

	if (num < *work) {
		*work = num;
		return -EINVAL;
	}

	if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2098
		netdev_err(dev->netdev, "conn_buf size too big\n");
2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138
		return -ENOMEM;
	}
	conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
	if (!conn_buf)
		return -ENOMEM;

	memset(conn_buf, 0, sizeof(*conn_buf));

	conn_addr = &conn_buf->conn_addr_buf;
	conn_addr->remote_addr_0 = csk->ha[0];
	conn_addr->remote_addr_1 = csk->ha[1];
	conn_addr->remote_addr_2 = csk->ha[2];
	conn_addr->remote_addr_3 = csk->ha[3];
	conn_addr->remote_addr_4 = csk->ha[4];
	conn_addr->remote_addr_5 = csk->ha[5];

	if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
		struct l4_kwq_connect_req2 *kwqe2 =
			(struct l4_kwq_connect_req2 *) wqes[1];

		conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
		conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
		conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;

		conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
		conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
		conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
		conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
	}
	kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];

	conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
	conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
	conn_addr->local_tcp_port = kwqe1->src_port;
	conn_addr->remote_tcp_port = kwqe1->dst_port;

	conn_addr->pmtu = kwqe3->pmtu;
	cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);

	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2139
		  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2140 2141 2142 2143 2144 2145 2146

	cnic_bnx2x_set_tcp_timestamp(dev,
		kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);

	ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
			kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
	if (!ret)
2147
		set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204

	return ret;
}

static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
	union l5cm_specific_data l5_data;
	int ret;

	memset(&l5_data, 0, sizeof(l5_data));
	ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
			req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
	return ret;
}

static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
	union l5cm_specific_data l5_data;
	int ret;

	memset(&l5_data, 0, sizeof(l5_data));
	ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
			req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
	return ret;
}
static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
	struct l4_kcq kcqe;
	struct kcqe *cqes[1];

	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.pg_host_opaque = req->host_opaque;
	kcqe.pg_cid = req->host_opaque;
	kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
	return 0;
}

static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
	struct l4_kcq kcqe;
	struct kcqe *cqes[1];

	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.pg_host_opaque = req->pg_host_opaque;
	kcqe.pg_cid = req->pg_cid;
	kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
	return 0;
}

M
Michael Chan 已提交
2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223
static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct fcoe_kwqe_stat *req;
	struct fcoe_stat_ramrod_params *fcoe_stat;
	union l5cm_specific_data l5_data;
	struct cnic_local *cp = dev->cnic_priv;
	int ret;
	u32 cid;

	req = (struct fcoe_kwqe_stat *) kwqe;
	cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);

	fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
	if (!fcoe_stat)
		return -ENOMEM;

	memset(fcoe_stat, 0, sizeof(*fcoe_stat));
	memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));

2224
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
M
Michael Chan 已提交
2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268
				  FCOE_CONNECTION_TYPE, &l5_data);
	return ret;
}

static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
				 u32 num, int *work)
{
	int ret;
	struct cnic_local *cp = dev->cnic_priv;
	u32 cid;
	struct fcoe_init_ramrod_params *fcoe_init;
	struct fcoe_kwqe_init1 *req1;
	struct fcoe_kwqe_init2 *req2;
	struct fcoe_kwqe_init3 *req3;
	union l5cm_specific_data l5_data;

	if (num < 3) {
		*work = num;
		return -EINVAL;
	}
	req1 = (struct fcoe_kwqe_init1 *) wqes[0];
	req2 = (struct fcoe_kwqe_init2 *) wqes[1];
	req3 = (struct fcoe_kwqe_init3 *) wqes[2];
	if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
		*work = 1;
		return -EINVAL;
	}
	if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
		*work = 2;
		return -EINVAL;
	}

	if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
		netdev_err(dev->netdev, "fcoe_init size too big\n");
		return -ENOMEM;
	}
	fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
	if (!fcoe_init)
		return -ENOMEM;

	memset(fcoe_init, 0, sizeof(*fcoe_init));
	memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
	memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
	memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2269 2270 2271
	fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
	fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
	fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
M
Michael Chan 已提交
2272 2273 2274 2275 2276 2277 2278

	fcoe_init->sb_num = cp->status_blk_num;
	fcoe_init->eq_prod = MAX_KCQ_IDX;
	fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
	cp->kcq2.sw_prod_idx = 0;

	cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2279
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
M
Michael Chan 已提交
2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314
				  FCOE_CONNECTION_TYPE, &l5_data);
	*work = 3;
	return ret;
}

static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
				 u32 num, int *work)
{
	int ret = 0;
	u32 cid = -1, l5_cid;
	struct cnic_local *cp = dev->cnic_priv;
	struct fcoe_kwqe_conn_offload1 *req1;
	struct fcoe_kwqe_conn_offload2 *req2;
	struct fcoe_kwqe_conn_offload3 *req3;
	struct fcoe_kwqe_conn_offload4 *req4;
	struct fcoe_conn_offload_ramrod_params *fcoe_offload;
	struct cnic_context *ctx;
	struct fcoe_context *fctx;
	struct regpair ctx_addr;
	union l5cm_specific_data l5_data;
	struct fcoe_kcqe kcqe;
	struct kcqe *cqes[1];

	if (num < 4) {
		*work = num;
		return -EINVAL;
	}
	req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
	req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
	req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
	req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];

	*work = 4;

	l5_cid = req1->fcoe_conn_id;
2315
	if (l5_cid >= dev->max_fcoe_conn)
M
Michael Chan 已提交
2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418
		goto err_reply;

	l5_cid += BNX2X_FCOE_L5_CID_BASE;

	ctx = &cp->ctx_tbl[l5_cid];
	if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
		goto err_reply;

	ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
	if (ret) {
		ret = 0;
		goto err_reply;
	}
	cid = ctx->cid;

	fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
	if (fctx) {
		u32 hw_cid = BNX2X_HW_CID(cp, cid);
		u32 val;

		val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
					     FCOE_CONNECTION_TYPE);
		fctx->xstorm_ag_context.cdu_reserved = val;
		val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
					     FCOE_CONNECTION_TYPE);
		fctx->ustorm_ag_context.cdu_usage = val;
	}
	if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
		netdev_err(dev->netdev, "fcoe_offload size too big\n");
		goto err_reply;
	}
	fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
	if (!fcoe_offload)
		goto err_reply;

	memset(fcoe_offload, 0, sizeof(*fcoe_offload));
	memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
	memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
	memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
	memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));

	cid = BNX2X_HW_CID(cp, cid);
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
				  FCOE_CONNECTION_TYPE, &l5_data);
	if (!ret)
		set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);

	return ret;

err_reply:
	if (cid != -1)
		cnic_free_bnx2x_conn_resc(dev, l5_cid);

	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
	kcqe.fcoe_conn_id = req1->fcoe_conn_id;
	kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;

	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
	return ret;
}

static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct fcoe_kwqe_conn_enable_disable *req;
	struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
	union l5cm_specific_data l5_data;
	int ret;
	u32 cid, l5_cid;
	struct cnic_local *cp = dev->cnic_priv;

	req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
	cid = req->context_id;
	l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;

	if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
		netdev_err(dev->netdev, "fcoe_enable size too big\n");
		return -ENOMEM;
	}
	fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
	if (!fcoe_enable)
		return -ENOMEM;

	memset(fcoe_enable, 0, sizeof(*fcoe_enable));
	memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
				  FCOE_CONNECTION_TYPE, &l5_data);
	return ret;
}

static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct fcoe_kwqe_conn_enable_disable *req;
	struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
	union l5cm_specific_data l5_data;
	int ret;
	u32 cid, l5_cid;
	struct cnic_local *cp = dev->cnic_priv;

	req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
	cid = req->context_id;
	l5_cid = req->conn_id;
2419
	if (l5_cid >= dev->max_fcoe_conn)
M
Michael Chan 已提交
2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452
		return -EINVAL;

	l5_cid += BNX2X_FCOE_L5_CID_BASE;

	if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
		netdev_err(dev->netdev, "fcoe_disable size too big\n");
		return -ENOMEM;
	}
	fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
	if (!fcoe_disable)
		return -ENOMEM;

	memset(fcoe_disable, 0, sizeof(*fcoe_disable));
	memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
				  FCOE_CONNECTION_TYPE, &l5_data);
	return ret;
}

static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct fcoe_kwqe_conn_destroy *req;
	union l5cm_specific_data l5_data;
	int ret;
	u32 cid, l5_cid;
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx;
	struct fcoe_kcqe kcqe;
	struct kcqe *cqes[1];

	req = (struct fcoe_kwqe_conn_destroy *) kwqe;
	cid = req->context_id;
	l5_cid = req->conn_id;
2453
	if (l5_cid >= dev->max_fcoe_conn)
M
Michael Chan 已提交
2454 2455 2456 2457 2458 2459 2460 2461 2462
		return -EINVAL;

	l5_cid += BNX2X_FCOE_L5_CID_BASE;

	ctx = &cp->ctx_tbl[l5_cid];

	init_waitqueue_head(&ctx->waitq);
	ctx->wait_cond = 0;

2463 2464
	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
M
Michael Chan 已提交
2465 2466 2467 2468
	memset(&l5_data, 0, sizeof(l5_data));
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
				  FCOE_CONNECTION_TYPE, &l5_data);
	if (ret == 0) {
2469 2470 2471
		wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
		if (ctx->wait_cond)
			kcqe.completion_status = 0;
M
Michael Chan 已提交
2472 2473
	}

2474 2475 2476
	set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
	queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));

M
Michael Chan 已提交
2477 2478 2479 2480 2481 2482 2483 2484 2485
	kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
	kcqe.fcoe_conn_id = req->conn_id;
	kcqe.fcoe_conn_context_id = cid;

	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
	return ret;
}

2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509
static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 i;

	for (i = start_cid; i < cp->max_cid_space; i++) {
		struct cnic_context *ctx = &cp->ctx_tbl[i];
		int j;

		while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
			msleep(10);

		for (j = 0; j < 5; j++) {
			if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
				break;
			msleep(20);
		}

		if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
			netdev_warn(dev->netdev, "CID %x not deleted\n",
				   ctx->cid);
	}
}

M
Michael Chan 已提交
2510 2511 2512 2513 2514 2515 2516 2517
static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct fcoe_kwqe_destroy *req;
	union l5cm_specific_data l5_data;
	struct cnic_local *cp = dev->cnic_priv;
	int ret;
	u32 cid;

2518 2519
	cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);

M
Michael Chan 已提交
2520 2521 2522 2523
	req = (struct fcoe_kwqe_destroy *) kwqe;
	cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);

	memset(&l5_data, 0, sizeof(l5_data));
2524
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
M
Michael Chan 已提交
2525 2526 2527 2528
				  FCOE_CONNECTION_TYPE, &l5_data);
	return ret;
}

2529 2530 2531 2532 2533 2534 2535 2536
static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct kcqe kcqe;
	struct kcqe *cqes[1];
	u32 cid;
	u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
	u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2537
	u32 kcqe_op;
2538 2539 2540 2541 2542
	int ulp_type;

	cid = kwqe->kwqe_info0;
	memset(&kcqe, 0, sizeof(kcqe));

2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560
	if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
		u32 l5_cid = 0;

		ulp_type = CNIC_ULP_FCOE;
		if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
			struct fcoe_kwqe_conn_enable_disable *req;

			req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
			kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
			cid = req->context_id;
			l5_cid = req->conn_id;
		} else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
			kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
		} else {
			return;
		}
		kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
		kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2561
		kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2562 2563 2564 2565
		kcqe.kcqe_info2 = cid;
		kcqe.kcqe_info0 = l5_cid;

	} else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2566 2567 2568 2569 2570 2571
		ulp_type = CNIC_ULP_ISCSI;
		if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
			cid = kwqe->kwqe_info1;

		kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
		kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2572
		kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590
		kcqe.kcqe_info2 = cid;
		cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);

	} else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
		struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;

		ulp_type = CNIC_ULP_L4;
		if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
			kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
		else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
			kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
		else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
			kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
		else
			return;

		kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
				    KCQE_FLAGS_LAYER_MASK_L4;
2591
		l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2592 2593 2594 2595 2596 2597
		l4kcqe->cid = cid;
		cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
	} else {
		return;
	}

2598
	cqes[0] = &kcqe;
2599 2600 2601
	cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
}

M
Michael Chan 已提交
2602 2603
static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
					 struct kwqe *wqes[], u32 num_wqes)
2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654
{
	int i, work, ret;
	u32 opcode;
	struct kwqe *kwqe;

	if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
		return -EAGAIN;		/* bnx2 is down */

	for (i = 0; i < num_wqes; ) {
		kwqe = wqes[i];
		opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
		work = 1;

		switch (opcode) {
		case ISCSI_KWQE_OPCODE_INIT1:
			ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
			break;
		case ISCSI_KWQE_OPCODE_INIT2:
			ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
			break;
		case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
			ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
						     num_wqes - i, &work);
			break;
		case ISCSI_KWQE_OPCODE_UPDATE_CONN:
			ret = cnic_bnx2x_iscsi_update(dev, kwqe);
			break;
		case ISCSI_KWQE_OPCODE_DESTROY_CONN:
			ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
			break;
		case L4_KWQE_OPCODE_VALUE_CONNECT1:
			ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
						 &work);
			break;
		case L4_KWQE_OPCODE_VALUE_CLOSE:
			ret = cnic_bnx2x_close(dev, kwqe);
			break;
		case L4_KWQE_OPCODE_VALUE_RESET:
			ret = cnic_bnx2x_reset(dev, kwqe);
			break;
		case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
			ret = cnic_bnx2x_offload_pg(dev, kwqe);
			break;
		case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
			ret = cnic_bnx2x_update_pg(dev, kwqe);
			break;
		case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
			ret = 0;
			break;
		default:
			ret = 0;
2655 2656
			netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
				   opcode);
2657 2658
			break;
		}
2659
		if (ret < 0) {
2660 2661
			netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
				   opcode);
2662 2663 2664 2665 2666 2667 2668 2669

			/* Possibly bnx2x parity error, send completion
			 * to ulp drivers with error code to speed up
			 * cleanup and reset recovery.
			 */
			if (ret == -EIO || ret == -EAGAIN)
				cnic_bnx2x_kwqe_err(dev, kwqe);
		}
2670 2671 2672 2673 2674
		i += work;
	}
	return 0;
}

M
Michael Chan 已提交
2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685
static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
					struct kwqe *wqes[], u32 num_wqes)
{
	struct cnic_local *cp = dev->cnic_priv;
	int i, work, ret;
	u32 opcode;
	struct kwqe *kwqe;

	if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
		return -EAGAIN;		/* bnx2 is down */

2686
	if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
M
Michael Chan 已提交
2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723
		return -EINVAL;

	for (i = 0; i < num_wqes; ) {
		kwqe = wqes[i];
		opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
		work = 1;

		switch (opcode) {
		case FCOE_KWQE_OPCODE_INIT1:
			ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
						    num_wqes - i, &work);
			break;
		case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
			ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
						    num_wqes - i, &work);
			break;
		case FCOE_KWQE_OPCODE_ENABLE_CONN:
			ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
			break;
		case FCOE_KWQE_OPCODE_DISABLE_CONN:
			ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
			break;
		case FCOE_KWQE_OPCODE_DESTROY_CONN:
			ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
			break;
		case FCOE_KWQE_OPCODE_DESTROY:
			ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
			break;
		case FCOE_KWQE_OPCODE_STAT:
			ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
			break;
		default:
			ret = 0;
			netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
				   opcode);
			break;
		}
2724
		if (ret < 0) {
M
Michael Chan 已提交
2725 2726
			netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
				   opcode);
2727 2728 2729 2730 2731 2732 2733 2734

			/* Possibly bnx2x parity error, send completion
			 * to ulp drivers with error code to speed up
			 * cleanup and reset recovery.
			 */
			if (ret == -EIO || ret == -EAGAIN)
				cnic_bnx2x_kwqe_err(dev, kwqe);
		}
M
Michael Chan 已提交
2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774
		i += work;
	}
	return 0;
}

static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
				   u32 num_wqes)
{
	int ret = -EINVAL;
	u32 layer_code;

	if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
		return -EAGAIN;		/* bnx2x is down */

	if (!num_wqes)
		return 0;

	layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
	switch (layer_code) {
	case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
	case KWQE_FLAGS_LAYER_MASK_L4:
	case KWQE_FLAGS_LAYER_MASK_L2:
		ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
		break;

	case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
		ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
		break;
	}
	return ret;
}

static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
{
	if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
		return KCQE_FLAGS_LAYER_MASK_L4;

	return opflag & KCQE_FLAGS_LAYER_MASK;
}

2775 2776 2777
static void service_kcqes(struct cnic_dev *dev, int num_cqes)
{
	struct cnic_local *cp = dev->cnic_priv;
2778
	int i, j, comp = 0;
2779 2780 2781 2782 2783 2784 2785

	i = 0;
	j = 1;
	while (num_cqes) {
		struct cnic_ulp_ops *ulp_ops;
		int ulp_type;
		u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
M
Michael Chan 已提交
2786
		u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2787 2788

		if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2789
			comp++;
2790 2791 2792 2793

		while (j < num_cqes) {
			u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;

M
Michael Chan 已提交
2794
			if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2795 2796 2797
				break;

			if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2798
				comp++;
2799 2800 2801 2802 2803 2804 2805
			j++;
		}

		if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
			ulp_type = CNIC_ULP_RDMA;
		else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
			ulp_type = CNIC_ULP_ISCSI;
M
Michael Chan 已提交
2806 2807
		else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
			ulp_type = CNIC_ULP_FCOE;
2808 2809 2810 2811 2812
		else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
			ulp_type = CNIC_ULP_L4;
		else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
			goto end;
		else {
2813 2814
			netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
				   kcqe_op_flag);
2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829
			goto end;
		}

		rcu_read_lock();
		ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
		if (likely(ulp_ops)) {
			ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
						  cp->completed_kcq + i, j);
		}
		rcu_read_unlock();
end:
		num_cqes -= j;
		i += j;
		j = 1;
	}
2830 2831
	if (unlikely(comp))
		cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2832 2833
}

M
Michael Chan 已提交
2834
static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2835 2836
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
2837
	u16 i, ri, hw_prod, last;
2838 2839 2840
	struct kcqe *kcqe;
	int kcqe_cnt = 0, last_cnt = 0;

M
Michael Chan 已提交
2841
	i = ri = last = info->sw_prod_idx;
2842
	ri &= MAX_KCQ_IDX;
M
Michael Chan 已提交
2843
	hw_prod = *info->hw_prod_idx_ptr;
2844
	hw_prod = info->hw_idx(hw_prod);
2845 2846

	while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
M
Michael Chan 已提交
2847
		kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2848
		cp->completed_kcq[kcqe_cnt++] = kcqe;
2849
		i = info->next_idx(i);
2850 2851 2852 2853 2854 2855 2856
		ri = i & MAX_KCQ_IDX;
		if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
			last_cnt = kcqe_cnt;
			last = i;
		}
	}

M
Michael Chan 已提交
2857
	info->sw_prod_idx = last;
2858 2859 2860
	return last_cnt;
}

2861 2862 2863
static int cnic_l2_completion(struct cnic_local *cp)
{
	u16 hw_cons, sw_cons;
M
Michael Chan 已提交
2864
	struct cnic_uio_dev *udev = cp->udev;
2865
	union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
M
Michael Chan 已提交
2866
					(udev->l2_ring + (2 * BCM_PAGE_SIZE));
2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894
	u32 cmd;
	int comp = 0;

	if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
		return 0;

	hw_cons = *cp->rx_cons_ptr;
	if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
		hw_cons++;

	sw_cons = cp->rx_cons;
	while (sw_cons != hw_cons) {
		u8 cqe_fp_flags;

		cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
		cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
		if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
			cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
			cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
			if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
			    cmd == RAMROD_CMD_ID_ETH_HALT)
				comp++;
		}
		sw_cons = BNX2X_NEXT_RCQE(sw_cons);
	}
	return comp;
}

M
Michael Chan 已提交
2895
static void cnic_chk_pkt_rings(struct cnic_local *cp)
2896
{
M
Michael Chan 已提交
2897
	u16 rx_cons, tx_cons;
2898
	int comp = 0;
2899

M
Michael Chan 已提交
2900
	if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2901 2902
		return;

M
Michael Chan 已提交
2903 2904
	rx_cons = *cp->rx_cons_ptr;
	tx_cons = *cp->tx_cons_ptr;
2905
	if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2906 2907 2908
		if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
			comp = cnic_l2_completion(cp);

2909 2910
		cp->tx_cons = tx_cons;
		cp->rx_cons = rx_cons;
2911

M
Michael Chan 已提交
2912 2913
		if (cp->udev)
			uio_event_notify(&cp->udev->cnic_uinfo);
2914
	}
2915 2916
	if (comp)
		clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2917 2918
}

2919
static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2920 2921
{
	struct cnic_local *cp = dev->cnic_priv;
2922
	u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2923 2924
	int kcqe_cnt;

2925 2926
	/* status block index must be read before reading other fields */
	rmb();
2927 2928
	cp->kwq_con_idx = *cp->kwq_con_idx_ptr;

M
Michael Chan 已提交
2929
	while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2930 2931 2932 2933 2934

		service_kcqes(dev, kcqe_cnt);

		/* Tell compiler that status_blk fields can change. */
		barrier();
M
Michael Chan 已提交
2935 2936 2937 2938
		status_idx = (u16) *cp->kcq1.status_idx_ptr;
		/* status block index must be read first */
		rmb();
		cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2939 2940
	}

M
Michael Chan 已提交
2941
	CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2942

M
Michael Chan 已提交
2943
	cnic_chk_pkt_rings(cp);
2944

2945 2946 2947
	return status_idx;
}

2948
static int cnic_service_bnx2(void *data, void *status_blk)
2949
{
2950
	struct cnic_dev *dev = data;
2951

2952 2953 2954 2955 2956
	if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
		struct status_block *sblk = status_blk;

		return sblk->status_idx;
	}
2957

2958 2959
	return cnic_service_bnx2_queues(dev);
}
2960

2961 2962 2963 2964
static void cnic_service_bnx2_msix(unsigned long data)
{
	struct cnic_dev *dev = (struct cnic_dev *) data;
	struct cnic_local *cp = dev->cnic_priv;
2965

2966
	cp->last_status_idx = cnic_service_bnx2_queues(dev);
2967 2968 2969 2970 2971

	CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
		BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
}

2972 2973 2974 2975 2976
static void cnic_doirq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

	if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2977 2978
		u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;

2979
		prefetch(cp->status_blk.gen);
2980
		prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2981 2982 2983 2984 2985

		tasklet_schedule(&cp->cnic_irq_task);
	}
}

2986 2987 2988 2989 2990 2991 2992 2993
static irqreturn_t cnic_irq(int irq, void *dev_instance)
{
	struct cnic_dev *dev = dev_instance;
	struct cnic_local *cp = dev->cnic_priv;

	if (cp->ack_int)
		cp->ack_int(dev);

2994
	cnic_doirq(dev);
2995 2996 2997 2998

	return IRQ_HANDLED;
}

2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016
static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
				      u16 index, u8 op, u8 update)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
		       COMMAND_REG_INT_ACK);
	struct igu_ack_register igu_ack;

	igu_ack.status_block_index = index;
	igu_ack.sb_id_and_flags =
			((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
			 (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
			 (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
			 (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));

	CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
}

M
Michael Chan 已提交
3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032
static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
			    u16 index, u8 op, u8 update)
{
	struct igu_regular cmd_data;
	u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;

	cmd_data.sb_id_and_flags =
		(index << IGU_REGULAR_SB_INDEX_SHIFT) |
		(segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
		(update << IGU_REGULAR_BUPDATE_SHIFT) |
		(op << IGU_REGULAR_ENABLE_INT_SHIFT);


	CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
}

3033 3034 3035 3036
static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

3037
	cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3038 3039 3040
			   IGU_INT_DISABLE, 0);
}

M
Michael Chan 已提交
3041 3042 3043 3044 3045 3046 3047 3048
static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

	cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
			IGU_INT_DISABLE, 0);
}

3049
static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3050
{
3051
	u32 last_status = *info->status_idx_ptr;
3052 3053
	int kcqe_cnt;

3054 3055
	/* status block index must be read before reading the KCQ */
	rmb();
3056
	while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3057 3058 3059 3060 3061 3062

		service_kcqes(dev, kcqe_cnt);

		/* Tell compiler that sblk fields can change. */
		barrier();

3063
		last_status = *info->status_idx_ptr;
3064 3065
		/* status block index must be read before reading the KCQ */
		rmb();
3066
	}
3067 3068 3069 3070 3071 3072 3073
	return last_status;
}

static void cnic_service_bnx2x_bh(unsigned long data)
{
	struct cnic_dev *dev = (struct cnic_dev *) data;
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
3074
	u32 status_idx, new_status_idx;
3075 3076 3077 3078

	if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
		return;

M
Michael Chan 已提交
3079 3080
	while (1) {
		status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3081

M
Michael Chan 已提交
3082 3083
		CNIC_WR16(dev, cp->kcq1.io_addr,
			  cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
M
Michael Chan 已提交
3084

3085
		if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
3086 3087 3088 3089 3090 3091 3092 3093 3094
			cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
					   status_idx, IGU_INT_ENABLE, 1);
			break;
		}

		new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);

		if (new_status_idx != status_idx)
			continue;
M
Michael Chan 已提交
3095 3096 3097 3098

		CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
			  MAX_KCQ_IDX);

M
Michael Chan 已提交
3099 3100
		cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
				status_idx, IGU_INT_ENABLE, 1);
M
Michael Chan 已提交
3101 3102

		break;
M
Michael Chan 已提交
3103
	}
3104 3105 3106 3107 3108 3109 3110
}

static int cnic_service_bnx2x(void *data, void *status_blk)
{
	struct cnic_dev *dev = data;
	struct cnic_local *cp = dev->cnic_priv;

3111 3112
	if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
		cnic_doirq(dev);
3113

3114
	cnic_chk_pkt_rings(cp);
3115 3116 3117 3118

	return 0;
}

3119
static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3120
{
3121
	struct cnic_ulp_ops *ulp_ops;
3122

3123 3124
	if (if_type == CNIC_ULP_ISCSI)
		cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3125

3126 3127 3128 3129
	mutex_lock(&cnic_lock);
	ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
					    lockdep_is_held(&cnic_lock));
	if (!ulp_ops) {
3130
		mutex_unlock(&cnic_lock);
3131 3132 3133 3134
		return;
	}
	set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
	mutex_unlock(&cnic_lock);
3135

3136 3137
	if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
		ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3138

3139 3140 3141 3142 3143 3144 3145 3146 3147 3148
	clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
}

static void cnic_ulp_stop(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int if_type;

	for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
		cnic_ulp_stop_one(cp, if_type);
3149 3150 3151 3152 3153 3154 3155 3156 3157 3158
}

static void cnic_ulp_start(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int if_type;

	for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
		struct cnic_ulp_ops *ulp_ops;

3159
		mutex_lock(&cnic_lock);
3160 3161
		ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
						    lockdep_is_held(&cnic_lock));
3162 3163
		if (!ulp_ops || !ulp_ops->cnic_start) {
			mutex_unlock(&cnic_lock);
3164
			continue;
3165 3166 3167
		}
		set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
		mutex_unlock(&cnic_lock);
3168 3169 3170

		if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
			ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3171 3172

		clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3173 3174 3175
	}
}

3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191
static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_ulp_ops *ulp_ops;
	int rc;

	mutex_lock(&cnic_lock);
	ulp_ops = cnic_ulp_tbl_prot(ulp_type);
	if (ulp_ops && ulp_ops->cnic_get_stats)
		rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
	else
		rc = -ENODEV;
	mutex_unlock(&cnic_lock);
	return rc;
}

3192 3193 3194
static int cnic_ctl(void *data, struct cnic_ctl_info *info)
{
	struct cnic_dev *dev = data;
3195
	int ulp_type = CNIC_ULP_ISCSI;
3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213

	switch (info->cmd) {
	case CNIC_CTL_STOP_CMD:
		cnic_hold(dev);

		cnic_ulp_stop(dev);
		cnic_stop_hw(dev);

		cnic_put(dev);
		break;
	case CNIC_CTL_START_CMD:
		cnic_hold(dev);

		if (!cnic_start_hw(dev))
			cnic_ulp_start(dev);

		cnic_put(dev);
		break;
3214 3215 3216 3217 3218 3219
	case CNIC_CTL_STOP_ISCSI_CMD: {
		struct cnic_local *cp = dev->cnic_priv;
		set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
		queue_delayed_work(cnic_wq, &cp->delete_task, 0);
		break;
	}
3220
	case CNIC_CTL_COMPLETION_CMD: {
3221 3222
		struct cnic_ctl_completion *comp = &info->data.comp;
		u32 cid = BNX2X_SW_CID(comp->cid);
3223 3224 3225
		u32 l5_cid;
		struct cnic_local *cp = dev->cnic_priv;

3226 3227 3228
		if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
			break;

3229 3230 3231
		if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
			struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

3232 3233 3234 3235 3236 3237 3238
			if (unlikely(comp->error)) {
				set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
				netdev_err(dev->netdev,
					   "CID %x CFC delete comp error %x\n",
					   cid, comp->error);
			}

3239 3240 3241 3242 3243
			ctx->wait_cond = 1;
			wake_up(&ctx->waitq);
		}
		break;
	}
3244 3245 3246 3247 3248 3249 3250 3251 3252
	case CNIC_CTL_FCOE_STATS_GET_CMD:
		ulp_type = CNIC_ULP_FCOE;
		/* fall through */
	case CNIC_CTL_ISCSI_STATS_GET_CMD:
		cnic_hold(dev);
		cnic_copy_ulp_stats(dev, ulp_type);
		cnic_put(dev);
		break;

3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266
	default:
		return -EINVAL;
	}
	return 0;
}

static void cnic_ulp_init(struct cnic_dev *dev)
{
	int i;
	struct cnic_local *cp = dev->cnic_priv;

	for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
		struct cnic_ulp_ops *ulp_ops;

3267
		mutex_lock(&cnic_lock);
3268
		ulp_ops = cnic_ulp_tbl_prot(i);
3269 3270
		if (!ulp_ops || !ulp_ops->cnic_init) {
			mutex_unlock(&cnic_lock);
3271
			continue;
3272 3273 3274
		}
		ulp_get(ulp_ops);
		mutex_unlock(&cnic_lock);
3275 3276 3277 3278

		if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
			ulp_ops->cnic_init(dev);

3279
		ulp_put(ulp_ops);
3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290
	}
}

static void cnic_ulp_exit(struct cnic_dev *dev)
{
	int i;
	struct cnic_local *cp = dev->cnic_priv;

	for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
		struct cnic_ulp_ops *ulp_ops;

3291
		mutex_lock(&cnic_lock);
3292
		ulp_ops = cnic_ulp_tbl_prot(i);
3293 3294
		if (!ulp_ops || !ulp_ops->cnic_exit) {
			mutex_unlock(&cnic_lock);
3295
			continue;
3296 3297 3298
		}
		ulp_get(ulp_ops);
		mutex_unlock(&cnic_lock);
3299 3300 3301 3302

		if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
			ulp_ops->cnic_exit(dev);

3303
		ulp_put(ulp_ops);
3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336
	}
}

static int cnic_cm_offload_pg(struct cnic_sock *csk)
{
	struct cnic_dev *dev = csk->dev;
	struct l4_kwq_offload_pg *l4kwqe;
	struct kwqe *wqes[1];

	l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
	memset(l4kwqe, 0, sizeof(*l4kwqe));
	wqes[0] = (struct kwqe *) l4kwqe;

	l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
	l4kwqe->flags =
		L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
	l4kwqe->l2hdr_nbytes = ETH_HLEN;

	l4kwqe->da0 = csk->ha[0];
	l4kwqe->da1 = csk->ha[1];
	l4kwqe->da2 = csk->ha[2];
	l4kwqe->da3 = csk->ha[3];
	l4kwqe->da4 = csk->ha[4];
	l4kwqe->da5 = csk->ha[5];

	l4kwqe->sa0 = dev->mac_addr[0];
	l4kwqe->sa1 = dev->mac_addr[1];
	l4kwqe->sa2 = dev->mac_addr[2];
	l4kwqe->sa3 = dev->mac_addr[3];
	l4kwqe->sa4 = dev->mac_addr[4];
	l4kwqe->sa5 = dev->mac_addr[5];

	l4kwqe->etype = ETH_P_IP;
3337
	l4kwqe->ipid_start = DEF_IPID_START;
3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521
	l4kwqe->host_opaque = csk->l5_cid;

	if (csk->vlan_id) {
		l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
		l4kwqe->vlan_tag = csk->vlan_id;
		l4kwqe->l2hdr_nbytes += 4;
	}

	return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_update_pg(struct cnic_sock *csk)
{
	struct cnic_dev *dev = csk->dev;
	struct l4_kwq_update_pg *l4kwqe;
	struct kwqe *wqes[1];

	l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
	memset(l4kwqe, 0, sizeof(*l4kwqe));
	wqes[0] = (struct kwqe *) l4kwqe;

	l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
	l4kwqe->flags =
		L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
	l4kwqe->pg_cid = csk->pg_cid;

	l4kwqe->da0 = csk->ha[0];
	l4kwqe->da1 = csk->ha[1];
	l4kwqe->da2 = csk->ha[2];
	l4kwqe->da3 = csk->ha[3];
	l4kwqe->da4 = csk->ha[4];
	l4kwqe->da5 = csk->ha[5];

	l4kwqe->pg_host_opaque = csk->l5_cid;
	l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;

	return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_upload_pg(struct cnic_sock *csk)
{
	struct cnic_dev *dev = csk->dev;
	struct l4_kwq_upload *l4kwqe;
	struct kwqe *wqes[1];

	l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
	memset(l4kwqe, 0, sizeof(*l4kwqe));
	wqes[0] = (struct kwqe *) l4kwqe;

	l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
	l4kwqe->flags =
		L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
	l4kwqe->cid = csk->pg_cid;

	return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_conn_req(struct cnic_sock *csk)
{
	struct cnic_dev *dev = csk->dev;
	struct l4_kwq_connect_req1 *l4kwqe1;
	struct l4_kwq_connect_req2 *l4kwqe2;
	struct l4_kwq_connect_req3 *l4kwqe3;
	struct kwqe *wqes[3];
	u8 tcp_flags = 0;
	int num_wqes = 2;

	l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
	l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
	l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
	memset(l4kwqe1, 0, sizeof(*l4kwqe1));
	memset(l4kwqe2, 0, sizeof(*l4kwqe2));
	memset(l4kwqe3, 0, sizeof(*l4kwqe3));

	l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
	l4kwqe3->flags =
		L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
	l4kwqe3->ka_timeout = csk->ka_timeout;
	l4kwqe3->ka_interval = csk->ka_interval;
	l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
	l4kwqe3->tos = csk->tos;
	l4kwqe3->ttl = csk->ttl;
	l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
	l4kwqe3->pmtu = csk->mtu;
	l4kwqe3->rcv_buf = csk->rcv_buf;
	l4kwqe3->snd_buf = csk->snd_buf;
	l4kwqe3->seed = csk->seed;

	wqes[0] = (struct kwqe *) l4kwqe1;
	if (test_bit(SK_F_IPV6, &csk->flags)) {
		wqes[1] = (struct kwqe *) l4kwqe2;
		wqes[2] = (struct kwqe *) l4kwqe3;
		num_wqes = 3;

		l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
		l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
		l4kwqe2->flags =
			L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
			L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
		l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
		l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
		l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
		l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
		l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
		l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
		l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
			       sizeof(struct tcphdr);
	} else {
		wqes[1] = (struct kwqe *) l4kwqe3;
		l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
			       sizeof(struct tcphdr);
	}

	l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
	l4kwqe1->flags =
		(L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
		 L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
	l4kwqe1->cid = csk->cid;
	l4kwqe1->pg_cid = csk->pg_cid;
	l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
	l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
	l4kwqe1->src_port = be16_to_cpu(csk->src_port);
	l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
	if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
		tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
	if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
		tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
	if (csk->tcp_flags & SK_TCP_NAGLE)
		tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
	if (csk->tcp_flags & SK_TCP_TIMESTAMP)
		tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
	if (csk->tcp_flags & SK_TCP_SACK)
		tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
	if (csk->tcp_flags & SK_TCP_SEG_SCALING)
		tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;

	l4kwqe1->tcp_flags = tcp_flags;

	return dev->submit_kwqes(dev, wqes, num_wqes);
}

static int cnic_cm_close_req(struct cnic_sock *csk)
{
	struct cnic_dev *dev = csk->dev;
	struct l4_kwq_close_req *l4kwqe;
	struct kwqe *wqes[1];

	l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
	memset(l4kwqe, 0, sizeof(*l4kwqe));
	wqes[0] = (struct kwqe *) l4kwqe;

	l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
	l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
	l4kwqe->cid = csk->cid;

	return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_abort_req(struct cnic_sock *csk)
{
	struct cnic_dev *dev = csk->dev;
	struct l4_kwq_reset_req *l4kwqe;
	struct kwqe *wqes[1];

	l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
	memset(l4kwqe, 0, sizeof(*l4kwqe));
	wqes[0] = (struct kwqe *) l4kwqe;

	l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
	l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
	l4kwqe->cid = csk->cid;

	return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
			  u32 l5_cid, struct cnic_sock **csk, void *context)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_sock *csk1;

	if (l5_cid >= MAX_CM_SK_TBL_SZ)
		return -EINVAL;

3522 3523 3524 3525 3526 3527 3528
	if (cp->ctx_tbl) {
		struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

		if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
			return -EAGAIN;
	}

3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561
	csk1 = &cp->csk_tbl[l5_cid];
	if (atomic_read(&csk1->ref_count))
		return -EAGAIN;

	if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
		return -EBUSY;

	csk1->dev = dev;
	csk1->cid = cid;
	csk1->l5_cid = l5_cid;
	csk1->ulp_type = ulp_type;
	csk1->context = context;

	csk1->ka_timeout = DEF_KA_TIMEOUT;
	csk1->ka_interval = DEF_KA_INTERVAL;
	csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
	csk1->tos = DEF_TOS;
	csk1->ttl = DEF_TTL;
	csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
	csk1->rcv_buf = DEF_RCV_BUF;
	csk1->snd_buf = DEF_SND_BUF;
	csk1->seed = DEF_SEED;

	*csk = csk1;
	return 0;
}

static void cnic_cm_cleanup(struct cnic_sock *csk)
{
	if (csk->src_port) {
		struct cnic_dev *dev = csk->dev;
		struct cnic_local *cp = dev->cnic_priv;

3562
		cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606
		csk->src_port = 0;
	}
}

static void cnic_close_conn(struct cnic_sock *csk)
{
	if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
		cnic_cm_upload_pg(csk);
		clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
	}
	cnic_cm_cleanup(csk);
}

static int cnic_cm_destroy(struct cnic_sock *csk)
{
	if (!cnic_in_use(csk))
		return -EINVAL;

	csk_hold(csk);
	clear_bit(SK_F_INUSE, &csk->flags);
	smp_mb__after_clear_bit();
	while (atomic_read(&csk->ref_count) != 1)
		msleep(1);
	cnic_cm_cleanup(csk);

	csk->flags = 0;
	csk_put(csk);
	return 0;
}

static inline u16 cnic_get_vlan(struct net_device *dev,
				struct net_device **vlan_dev)
{
	if (dev->priv_flags & IFF_802_1Q_VLAN) {
		*vlan_dev = vlan_dev_real_dev(dev);
		return vlan_dev_vlan_id(dev);
	}
	*vlan_dev = dev;
	return 0;
}

static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
			     struct dst_entry **dst)
{
3607
#if defined(CONFIG_INET)
3608 3609
	struct rtable *rt;

3610 3611
	rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
	if (!IS_ERR(rt)) {
3612
		*dst = &rt->dst;
3613 3614 3615
		return 0;
	}
	return PTR_ERR(rt);
3616 3617 3618
#else
	return -ENETUNREACH;
#endif
3619 3620 3621 3622 3623
}

static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
			     struct dst_entry **dst)
{
3624
#if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3625
	struct flowi6 fl6;
3626

3627
	memset(&fl6, 0, sizeof(fl6));
A
Alexey Dobriyan 已提交
3628
	fl6.daddr = dst_addr->sin6_addr;
3629 3630
	if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
		fl6.flowi6_oif = dst_addr->sin6_scope_id;
3631

3632
	*dst = ip6_route_output(&init_net, NULL, &fl6);
3633 3634 3635 3636 3637
	if ((*dst)->error) {
		dst_release(*dst);
		*dst = NULL;
		return -ENETUNREACH;
	} else
3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690
		return 0;
#endif

	return -ENETUNREACH;
}

static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
					   int ulp_type)
{
	struct cnic_dev *dev = NULL;
	struct dst_entry *dst;
	struct net_device *netdev = NULL;
	int err = -ENETUNREACH;

	if (dst_addr->sin_family == AF_INET)
		err = cnic_get_v4_route(dst_addr, &dst);
	else if (dst_addr->sin_family == AF_INET6) {
		struct sockaddr_in6 *dst_addr6 =
			(struct sockaddr_in6 *) dst_addr;

		err = cnic_get_v6_route(dst_addr6, &dst);
	} else
		return NULL;

	if (err)
		return NULL;

	if (!dst->dev)
		goto done;

	cnic_get_vlan(dst->dev, &netdev);

	dev = cnic_from_netdev(netdev);

done:
	dst_release(dst);
	if (dev)
		cnic_put(dev);
	return dev;
}

static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
	struct cnic_dev *dev = csk->dev;
	struct cnic_local *cp = dev->cnic_priv;

	return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
}

static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
	struct cnic_dev *dev = csk->dev;
	struct cnic_local *cp = dev->cnic_priv;
3691 3692
	int is_v6, rc = 0;
	struct dst_entry *dst = NULL;
3693
	struct net_device *realdev;
3694 3695
	__be16 local_port;
	u32 port_id;
3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709

	if (saddr->local.v6.sin6_family == AF_INET6 &&
	    saddr->remote.v6.sin6_family == AF_INET6)
		is_v6 = 1;
	else if (saddr->local.v4.sin_family == AF_INET &&
		 saddr->remote.v4.sin_family == AF_INET)
		is_v6 = 0;
	else
		return -EINVAL;

	clear_bit(SK_F_IPV6, &csk->flags);

	if (is_v6) {
		set_bit(SK_F_IPV6, &csk->flags);
3710
		cnic_get_v6_route(&saddr->remote.v6, &dst);
3711 3712 3713 3714 3715 3716 3717

		memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
		       sizeof(struct in6_addr));
		csk->dst_port = saddr->remote.v6.sin6_port;
		local_port = saddr->local.v6.sin6_port;

	} else {
3718
		cnic_get_v4_route(&saddr->remote.v4, &dst);
3719 3720 3721 3722 3723 3724

		csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
		csk->dst_port = saddr->remote.v4.sin_port;
		local_port = saddr->local.v4.sin_port;
	}

3725 3726 3727 3728 3729 3730 3731 3732 3733
	csk->vlan_id = 0;
	csk->mtu = dev->netdev->mtu;
	if (dst && dst->dev) {
		u16 vlan = cnic_get_vlan(dst->dev, &realdev);
		if (realdev == dev->netdev) {
			csk->vlan_id = vlan;
			csk->mtu = dst_mtu(dst);
		}
	}
3734

3735 3736 3737 3738 3739
	port_id = be16_to_cpu(local_port);
	if (port_id >= CNIC_LOCAL_PORT_MIN &&
	    port_id < CNIC_LOCAL_PORT_MAX) {
		if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
			port_id = 0;
3740
	} else
3741
		port_id = 0;
3742

3743 3744 3745
	if (!port_id) {
		port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
		if (port_id == -1) {
3746 3747 3748
			rc = -ENOMEM;
			goto err_out;
		}
3749
		local_port = cpu_to_be16(port_id);
3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766
	}
	csk->src_port = local_port;

err_out:
	dst_release(dst);
	return rc;
}

static void cnic_init_csk_state(struct cnic_sock *csk)
{
	csk->state = 0;
	clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
	clear_bit(SK_F_CLOSING, &csk->flags);
}

static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
3767
	struct cnic_local *cp = csk->dev->cnic_priv;
3768 3769
	int err = 0;

3770 3771 3772
	if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
		return -EOPNOTSUPP;

3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796
	if (!cnic_in_use(csk))
		return -EINVAL;

	if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
		return -EINVAL;

	cnic_init_csk_state(csk);

	err = cnic_get_route(csk, saddr);
	if (err)
		goto err_out;

	err = cnic_resolve_addr(csk, saddr);
	if (!err)
		return 0;

err_out:
	clear_bit(SK_F_CONNECT_START, &csk->flags);
	return err;
}

static int cnic_cm_abort(struct cnic_sock *csk)
{
	struct cnic_local *cp = csk->dev->cnic_priv;
3797
	u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809

	if (!cnic_in_use(csk))
		return -EINVAL;

	if (cnic_abort_prep(csk))
		return cnic_cm_abort_req(csk);

	/* Getting here means that we haven't started connect, or
	 * connect was not successful.
	 */

	cp->close_conn(csk, opcode);
3810 3811
	if (csk->state != opcode)
		return -EALREADY;
3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823

	return 0;
}

static int cnic_cm_close(struct cnic_sock *csk)
{
	if (!cnic_in_use(csk))
		return -EINVAL;

	if (cnic_close_prep(csk)) {
		csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
		return cnic_cm_close_req(csk);
3824 3825
	} else {
		return -EALREADY;
3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878
	}
	return 0;
}

static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
			   u8 opcode)
{
	struct cnic_ulp_ops *ulp_ops;
	int ulp_type = csk->ulp_type;

	rcu_read_lock();
	ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
	if (ulp_ops) {
		if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
			ulp_ops->cm_connect_complete(csk);
		else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
			ulp_ops->cm_close_complete(csk);
		else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
			ulp_ops->cm_remote_abort(csk);
		else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
			ulp_ops->cm_abort_complete(csk);
		else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
			ulp_ops->cm_remote_close(csk);
	}
	rcu_read_unlock();
}

static int cnic_cm_set_pg(struct cnic_sock *csk)
{
	if (cnic_offld_prep(csk)) {
		if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
			cnic_cm_update_pg(csk);
		else
			cnic_cm_offload_pg(csk);
	}
	return 0;
}

static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 l5_cid = kcqe->pg_host_opaque;
	u8 opcode = kcqe->op_code;
	struct cnic_sock *csk = &cp->csk_tbl[l5_cid];

	csk_hold(csk);
	if (!cnic_in_use(csk))
		goto done;

	if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
		clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
		goto done;
	}
3879 3880 3881 3882 3883 3884 3885 3886
	/* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
	if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
		clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
		cnic_cm_upcall(cp, csk,
			       L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
		goto done;
	}

3887 3888 3889 3890 3891 3892 3893 3894
	csk->pg_cid = kcqe->pg_cid;
	set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
	cnic_cm_conn_req(csk);

done:
	csk_put(csk);
}

M
Michael Chan 已提交
3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906
static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
	u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

	ctx->timestamp = jiffies;
	ctx->wait_cond = 1;
	wake_up(&ctx->waitq);
}

3907 3908 3909 3910 3911 3912 3913 3914
static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
	u8 opcode = l4kcqe->op_code;
	u32 l5_cid;
	struct cnic_sock *csk;

M
Michael Chan 已提交
3915 3916 3917 3918
	if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
		cnic_process_fcoe_term_conn(dev, kcqe);
		return;
	}
3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939
	if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
	    opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
		cnic_cm_process_offld_pg(dev, l4kcqe);
		return;
	}

	l5_cid = l4kcqe->conn_id;
	if (opcode & 0x80)
		l5_cid = l4kcqe->cid;
	if (l5_cid >= MAX_CM_SK_TBL_SZ)
		return;

	csk = &cp->csk_tbl[l5_cid];
	csk_hold(csk);

	if (!cnic_in_use(csk)) {
		csk_put(csk);
		return;
	}

	switch (opcode) {
3940 3941 3942 3943 3944 3945 3946
	case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
		if (l4kcqe->status != 0) {
			clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
			cnic_cm_upcall(cp, csk,
				       L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
		}
		break;
3947 3948 3949
	case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
		if (l4kcqe->status == 0)
			set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3950 3951
		else if (l4kcqe->status ==
			 L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
3952
			set_bit(SK_F_HW_ERR, &csk->flags);
3953 3954 3955 3956 3957 3958 3959 3960 3961

		smp_mb__before_clear_bit();
		clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
		cnic_cm_upcall(cp, csk, opcode);
		break;

	case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
	case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
	case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3962 3963
	case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
	case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3964
		if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
3965 3966
			set_bit(SK_F_HW_ERR, &csk->flags);

3967 3968 3969 3970
		cp->close_conn(csk, opcode);
		break;

	case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3971 3972 3973 3974 3975 3976 3977
		/* after we already sent CLOSE_REQ */
		if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
		    !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
		    csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
			cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
		else
			cnic_cm_upcall(cp, csk, opcode);
3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007
		break;
	}
	csk_put(csk);
}

static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
{
	struct cnic_dev *dev = data;
	int i;

	for (i = 0; i < num; i++)
		cnic_cm_process_kcqe(dev, kcqe[i]);
}

static struct cnic_ulp_ops cm_ulp_ops = {
	.indicate_kcqes		= cnic_cm_indicate_kcqe,
};

static void cnic_cm_free_mem(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

	kfree(cp->csk_tbl);
	cp->csk_tbl = NULL;
	cnic_free_id_tbl(&cp->csk_port_tbl);
}

static int cnic_cm_alloc_mem(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
4008
	u32 port_id;
4009 4010 4011 4012 4013 4014

	cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
			      GFP_KERNEL);
	if (!cp->csk_tbl)
		return -ENOMEM;

4015
	port_id = random32();
4016
	port_id %= CNIC_LOCAL_PORT_RANGE;
4017
	if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4018
			     CNIC_LOCAL_PORT_MIN, port_id)) {
4019 4020 4021 4022 4023 4024 4025 4026
		cnic_cm_free_mem(dev);
		return -ENOMEM;
	}
	return 0;
}

static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
{
4027 4028 4029 4030
	if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
		/* Unsolicited RESET_COMP or RESET_RECEIVED */
		opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
		csk->state = opcode;
4031
	}
4032 4033

	/* 1. If event opcode matches the expected event in csk->state
4034 4035
	 * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
	 *    event
4036 4037
	 * 3. If the expected event is 0, meaning the connection was never
	 *    never established, we accept the opcode from cm_abort.
4038
	 */
4039
	if (opcode == csk->state || csk->state == 0 ||
4040 4041
	    csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
	    csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4042 4043 4044
		if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
			if (csk->state == 0)
				csk->state = opcode;
4045
			return 1;
4046
		}
4047
	}
4048 4049 4050 4051 4052 4053 4054 4055
	return 0;
}

static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
{
	struct cnic_dev *dev = csk->dev;
	struct cnic_local *cp = dev->cnic_priv;

4056 4057 4058 4059 4060
	if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
		cnic_cm_upcall(cp, csk, opcode);
		return;
	}

4061
	clear_bit(SK_F_CONNECT_START, &csk->flags);
4062
	cnic_close_conn(csk);
4063
	csk->state = opcode;
4064
	cnic_cm_upcall(cp, csk, opcode);
4065 4066 4067 4068 4069 4070 4071 4072 4073 4074
}

static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
{
}

static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
{
	u32 seed;

4075
	seed = random32();
4076 4077 4078 4079
	cnic_ctx_wr(dev, 45, 0, seed);
	return 0;
}

4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092
static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
{
	struct cnic_dev *dev = csk->dev;
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
	union l5cm_specific_data l5_data;
	u32 cmd = 0;
	int close_complete = 0;

	switch (opcode) {
	case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
	case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
	case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4093
		if (cnic_ready_to_close(csk, opcode)) {
4094 4095 4096
			if (test_bit(SK_F_HW_ERR, &csk->flags))
				close_complete = 1;
			else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4097 4098 4099 4100
				cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
			else
				close_complete = 1;
		}
4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122
		break;
	case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
		cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
		break;
	case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
		close_complete = 1;
		break;
	}
	if (cmd) {
		memset(&l5_data, 0, sizeof(l5_data));

		cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
				    &l5_data);
	} else if (close_complete) {
		ctx->timestamp = jiffies;
		cnic_close_conn(csk);
		cnic_cm_upcall(cp, csk, csk->state);
	}
}

static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
{
4123 4124 4125 4126 4127 4128 4129 4130
	struct cnic_local *cp = dev->cnic_priv;

	if (!cp->ctx_tbl)
		return;

	if (!netif_running(dev->netdev))
		return;

4131
	cnic_bnx2x_delete_wait(dev, 0);
4132 4133 4134 4135 4136 4137 4138

	cancel_delayed_work(&cp->delete_task);
	flush_workqueue(cnic_wq);

	if (atomic_read(&cp->iscsi_conn) != 0)
		netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
			    atomic_read(&cp->iscsi_conn));
4139 4140 4141 4142 4143
}

static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
4144
	u32 pfid = cp->pfid;
4145
	u32 port = CNIC_PORT(cp);
4146 4147 4148 4149 4150

	cnic_init_bnx2x_mac(dev);
	cnic_bnx2x_set_tcp_timestamp(dev, 1);

	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4151
		  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4152 4153

	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4154
		XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4155
	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4156
		XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4157 4158 4159
		DEF_MAX_DA_COUNT);

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4160
		 XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4161
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4162
		 XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4163
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4164
		 XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4165
	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4166
		XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4167

4168
	CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4169 4170 4171 4172
		DEF_MAX_CWND);
	return 0;
}

4173 4174 4175 4176 4177 4178 4179 4180 4181 4182
static void cnic_delete_task(struct work_struct *work)
{
	struct cnic_local *cp;
	struct cnic_dev *dev;
	u32 i;
	int need_resched = 0;

	cp = container_of(work, struct cnic_local, delete_task.work);
	dev = cp->dev;

4183 4184 4185 4186 4187 4188 4189 4190 4191
	if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
		struct drv_ctl_info info;

		cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);

		info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
		cp->ethdev->drv_ctl(dev->netdev, &info);
	}

4192 4193
	for (i = 0; i < cp->max_cid_space; i++) {
		struct cnic_context *ctx = &cp->ctx_tbl[i];
4194
		int err;
4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207

		if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
		    !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
			continue;

		if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
			need_resched = 1;
			continue;
		}

		if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
			continue;

4208
		err = cnic_bnx2x_destroy_ramrod(dev, i);
4209 4210

		cnic_free_bnx2x_conn_resc(dev, i);
4211 4212 4213
		if (!err) {
			if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
				atomic_dec(&cp->iscsi_conn);
4214

4215 4216
			clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
		}
4217 4218 4219 4220 4221 4222 4223 4224
	}

	if (need_resched)
		queue_delayed_work(cnic_wq, &cp->delete_task,
				   msecs_to_jiffies(10));

}

4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238
static int cnic_cm_open(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int err;

	err = cnic_cm_alloc_mem(dev);
	if (err)
		return err;

	err = cp->start_cm(dev);

	if (err)
		goto err_out;

4239 4240
	INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);

4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330
	dev->cm_create = cnic_cm_create;
	dev->cm_destroy = cnic_cm_destroy;
	dev->cm_connect = cnic_cm_connect;
	dev->cm_abort = cnic_cm_abort;
	dev->cm_close = cnic_cm_close;
	dev->cm_select_dev = cnic_cm_select_dev;

	cp->ulp_handle[CNIC_ULP_L4] = dev;
	rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
	return 0;

err_out:
	cnic_cm_free_mem(dev);
	return err;
}

static int cnic_cm_shutdown(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int i;

	if (!cp->csk_tbl)
		return 0;

	for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
		struct cnic_sock *csk = &cp->csk_tbl[i];

		clear_bit(SK_F_INUSE, &csk->flags);
		cnic_cm_cleanup(csk);
	}
	cnic_cm_free_mem(dev);

	return 0;
}

static void cnic_init_context(struct cnic_dev *dev, u32 cid)
{
	u32 cid_addr;
	int i;

	cid_addr = GET_CID_ADDR(cid);

	for (i = 0; i < CTX_SIZE; i += 4)
		cnic_ctx_wr(dev, cid_addr, i, 0);
}

static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
{
	struct cnic_local *cp = dev->cnic_priv;
	int ret = 0, i;
	u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;

	if (CHIP_NUM(cp) != CHIP_NUM_5709)
		return 0;

	for (i = 0; i < cp->ctx_blks; i++) {
		int j;
		u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
		u32 val;

		memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);

		CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
			(cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
		CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
			(u64) cp->ctx_arr[i].mapping >> 32);
		CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
			BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
		for (j = 0; j < 10; j++) {

			val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
			if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
				break;
			udelay(5);
		}
		if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
			ret = -EBUSY;
			break;
		}
	}
	return ret;
}

static void cnic_free_irq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;

	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
		cp->disable_int_sync(dev);
M
Michael Chan 已提交
4331
		tasklet_kill(&cp->cnic_irq_task);
4332 4333 4334 4335
		free_irq(ethdev->irq_arr[0].vector, dev);
	}
}

M
Michael Chan 已提交
4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348
static int cnic_request_irq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int err;

	err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
	if (err)
		tasklet_disable(&cp->cnic_irq_task);

	return err;
}

4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365
static int cnic_init_bnx2_irq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;

	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
		int err, i = 0;
		int sblk_num = cp->status_blk_num;
		u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
			   BNX2_HC_SB_CONFIG_1;

		CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);

		CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
		CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
		CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);

4366
		cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4367
		tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4368
			     (unsigned long) dev);
M
Michael Chan 已提交
4369 4370
		err = cnic_request_irq(dev);
		if (err)
4371
			return err;
M
Michael Chan 已提交
4372

4373
		while (cp->status_blk.bnx2->status_completion_producer_index &&
4374 4375 4376 4377 4378 4379 4380
		       i < 10) {
			CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
				1 << (11 + sblk_num));
			udelay(10);
			i++;
			barrier();
		}
4381
		if (cp->status_blk.bnx2->status_completion_producer_index) {
4382 4383 4384 4385 4386
			cnic_free_irq(dev);
			goto failed;
		}

	} else {
4387
		struct status_block *sblk = cp->status_blk.gen;
4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404
		u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
		int i = 0;

		while (sblk->status_completion_producer_index && i < 10) {
			CNIC_WR(dev, BNX2_HC_COMMAND,
				hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
			udelay(10);
			i++;
			barrier();
		}
		if (sblk->status_completion_producer_index)
			goto failed;

	}
	return 0;

failed:
4405
	netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438
	return -EBUSY;
}

static void cnic_enable_bnx2_int(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;

	if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
		return;

	CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
		BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
}

static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;

	if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
		return;

	CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
		BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
	CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
	synchronize_irq(ethdev->irq_arr[0].vector);
}

static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
M
Michael Chan 已提交
4439
	struct cnic_uio_dev *udev = cp->udev;
4440 4441 4442 4443
	u32 cid_addr, tx_cid, sb_id;
	u32 val, offset0, offset1, offset2, offset3;
	int i;
	struct tx_bd *txbd;
M
Michael Chan 已提交
4444
	dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4445
	struct status_block *s_blk = cp->status_blk.gen;
4446 4447 4448 4449 4450

	sb_id = cp->status_blk_num;
	tx_cid = 20;
	cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4451
		struct status_block_msix *sblk = cp->status_blk.bnx2;
4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471

		tx_cid = TX_TSS_CID + sb_id - 1;
		CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
			(TX_TSS_CID << 7));
		cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
	}
	cp->tx_cons = *cp->tx_cons_ptr;

	cid_addr = GET_CID_ADDR(tx_cid);
	if (CHIP_NUM(cp) == CHIP_NUM_5709) {
		u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;

		for (i = 0; i < PHY_CTX_SIZE; i += 4)
			cnic_ctx_wr(dev, cid_addr2, i, 0);

		offset0 = BNX2_L2CTX_TYPE_XI;
		offset1 = BNX2_L2CTX_CMD_TYPE_XI;
		offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
		offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
	} else {
4472 4473 4474
		cnic_init_context(dev, tx_cid);
		cnic_init_context(dev, tx_cid + 1);

4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485
		offset0 = BNX2_L2CTX_TYPE;
		offset1 = BNX2_L2CTX_CMD_TYPE;
		offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
		offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
	}
	val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
	cnic_ctx_wr(dev, cid_addr, offset0, val);

	val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
	cnic_ctx_wr(dev, cid_addr, offset1, val);

4486
	txbd = udev->l2_ring;
4487

M
Michael Chan 已提交
4488
	buf_map = udev->l2_buf_map;
4489 4490 4491 4492
	for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
		txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
		txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
	}
M
Michael Chan 已提交
4493
	val = (u64) ring_map >> 32;
4494 4495 4496
	cnic_ctx_wr(dev, cid_addr, offset2, val);
	txbd->tx_bd_haddr_hi = val;

M
Michael Chan 已提交
4497
	val = (u64) ring_map & 0xffffffff;
4498 4499 4500 4501 4502 4503 4504 4505
	cnic_ctx_wr(dev, cid_addr, offset3, val);
	txbd->tx_bd_haddr_lo = val;
}

static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
M
Michael Chan 已提交
4506
	struct cnic_uio_dev *udev = cp->udev;
4507 4508 4509
	u32 cid_addr, sb_id, val, coal_reg, coal_val;
	int i;
	struct rx_bd *rxbd;
4510
	struct status_block *s_blk = cp->status_blk.gen;
M
Michael Chan 已提交
4511
	dma_addr_t ring_map = udev->l2_ring_map;
4512 4513 4514 4515 4516 4517 4518

	sb_id = cp->status_blk_num;
	cnic_init_context(dev, 2);
	cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
	coal_reg = BNX2_HC_COMMAND;
	coal_val = CNIC_RD(dev, coal_reg);
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4519
		struct status_block_msix *sblk = cp->status_blk.bnx2;
4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539

		cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
		coal_reg = BNX2_HC_COALESCE_NOW;
		coal_val = 1 << (11 + sb_id);
	}
	i = 0;
	while (!(*cp->rx_cons_ptr != 0) && i < 10) {
		CNIC_WR(dev, coal_reg, coal_val);
		udelay(10);
		i++;
		barrier();
	}
	cp->rx_cons = *cp->rx_cons_ptr;

	cid_addr = GET_CID_ADDR(2);
	val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
	      BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);

	if (sb_id == 0)
4540
		val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4541
	else
4542
		val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4543 4544
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);

4545
	rxbd = udev->l2_ring + BCM_PAGE_SIZE;
4546 4547 4548 4549
	for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
		dma_addr_t buf_map;
		int n = (i % cp->l2_rx_ring_size) + 1;

M
Michael Chan 已提交
4550
		buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4551 4552 4553 4554 4555
		rxbd->rx_bd_len = cp->l2_single_buf_size;
		rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
		rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
		rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
	}
M
Michael Chan 已提交
4556
	val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4557 4558 4559
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
	rxbd->rx_bd_haddr_hi = val;

M
Michael Chan 已提交
4560
	val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
	rxbd->rx_bd_haddr_lo = val;

	val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
	cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
}

static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
{
	struct kwqe *wqes[1], l2kwqe;

	memset(&l2kwqe, 0, sizeof(l2kwqe));
	wqes[0] = &l2kwqe;
M
Michael Chan 已提交
4574
	l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617
			      (L2_KWQE_OPCODE_VALUE_FLUSH <<
			       KWQE_OPCODE_SHIFT) | 2;
	dev->submit_kwqes(dev, wqes, 1);
}

static void cnic_set_bnx2_mac(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 val;

	val = cp->func << 2;

	cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);

	val = cnic_reg_rd_ind(dev, cp->shmem_base +
			      BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
	dev->mac_addr[0] = (u8) (val >> 8);
	dev->mac_addr[1] = (u8) val;

	CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);

	val = cnic_reg_rd_ind(dev, cp->shmem_base +
			      BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
	dev->mac_addr[2] = (u8) (val >> 24);
	dev->mac_addr[3] = (u8) (val >> 16);
	dev->mac_addr[4] = (u8) (val >> 8);
	dev->mac_addr[5] = (u8) val;

	CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);

	val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
	if (CHIP_NUM(cp) != CHIP_NUM_5709)
		val |= BNX2_RPM_SORT_USER2_PROM_VLAN;

	CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
	CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
	CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
}

static int cnic_start_bnx2_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
4618
	struct status_block *sblk = cp->status_blk.gen;
4619
	u32 val, kcq_cid_addr, kwq_cid_addr;
4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643
	int err;

	cnic_set_bnx2_mac(dev);

	val = CNIC_RD(dev, BNX2_MQ_CONFIG);
	val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
	if (BCM_PAGE_BITS > 12)
		val |= (12 - 8)  << 4;
	else
		val |= (BCM_PAGE_BITS - 8)  << 4;

	CNIC_WR(dev, BNX2_MQ_CONFIG, val);

	CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
	CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
	CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);

	err = cnic_setup_5709_context(dev, 1);
	if (err)
		return err;

	cnic_init_context(dev, KWQ_CID);
	cnic_init_context(dev, KCQ_CID);

4644
	kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4645 4646 4647 4648 4649
	cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;

	cp->max_kwq_idx = MAX_KWQ_IDX;
	cp->kwq_prod_idx = 0;
	cp->kwq_con_idx = 0;
4650
	set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4651 4652 4653 4654 4655 4656 4657 4658 4659

	if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
		cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
	else
		cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;

	/* Initialize the kernel work queue context. */
	val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
	      (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4660
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4661 4662

	val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4663
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4664 4665

	val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4666
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4667 4668

	val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4669
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4670 4671

	val = (u32) cp->kwq_info.pgtbl_map;
4672 4673 4674 4675
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);

	kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
	cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4676

4677 4678
	cp->kcq1.sw_prod_idx = 0;
	cp->kcq1.hw_prod_idx_ptr =
4679
		&sblk->status_completion_producer_index;
4680

4681
	cp->kcq1.status_idx_ptr = &sblk->status_idx;
4682 4683 4684 4685

	/* Initialize the kernel complete queue context. */
	val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
	      (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4686
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4687 4688

	val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4689
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4690 4691

	val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4692
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4693

4694 4695
	val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4696

4697 4698
	val = (u32) cp->kcq1.dma.pgtbl_map;
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4699 4700 4701

	cp->int_num = 0;
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4702
		struct status_block_msix *msblk = cp->status_blk.bnx2;
4703
		u32 sb_id = cp->status_blk_num;
4704
		u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4705

4706
		cp->kcq1.hw_prod_idx_ptr =
4707 4708 4709
			&msblk->status_completion_producer_index;
		cp->kcq1.status_idx_ptr = &msblk->status_idx;
		cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
4710
		cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4711 4712
		cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
		cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738
	}

	/* Enable Commnad Scheduler notification when we write to the
	 * host producer index of the kernel contexts. */
	CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);

	/* Enable Command Scheduler notification when we write to either
	 * the Send Queue or Receive Queue producer indexes of the kernel
	 * bypass contexts. */
	CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
	CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);

	/* Notify COM when the driver post an application buffer. */
	CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);

	/* Set the CP and COM doorbells.  These two processors polls the
	 * doorbell for a non zero value before running.  This must be done
	 * after setting up the kernel queue contexts. */
	cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
	cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);

	cnic_init_bnx2_tx_ring(dev);
	cnic_init_bnx2_rx_ring(dev);

	err = cnic_init_bnx2_irq(dev);
	if (err) {
4739
		netdev_err(dev->netdev, "cnic_init_irq failed\n");
4740 4741 4742 4743 4744 4745 4746 4747
		cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
		cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
		return err;
	}

	return 0;
}

4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774
static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	u32 start_offset = ethdev->ctx_tbl_offset;
	int i;

	for (i = 0; i < cp->ctx_blks; i++) {
		struct cnic_ctx *ctx = &cp->ctx_arr[i];
		dma_addr_t map = ctx->mapping;

		if (cp->ctx_align) {
			unsigned long mask = cp->ctx_align - 1;

			map = (map + mask) & ~mask;
		}

		cnic_ctx_tbl_wr(dev, start_offset + i, map);
	}
}

static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int err = 0;

4775
	tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4776
		     (unsigned long) dev);
M
Michael Chan 已提交
4777 4778 4779
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
		err = cnic_request_irq(dev);

4780 4781 4782
	return err;
}

4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800
static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
						u16 sb_id, u8 sb_index,
						u8 disable)
{

	u32 addr = BAR_CSTRORM_INTMEM +
			CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
			offsetof(struct hc_status_block_data_e1x, index_data) +
			sizeof(struct hc_index_data)*sb_index +
			offsetof(struct hc_index_data, flags);
	u16 flags = CNIC_RD16(dev, addr);
	/* clear and set */
	flags &= ~HC_INDEX_DATA_HC_ENABLED;
	flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
		  HC_INDEX_DATA_HC_ENABLED);
	CNIC_WR16(dev, addr, flags);
}

4801 4802 4803 4804 4805 4806
static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	u8 sb_id = cp->status_blk_num;

	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4807 4808 4809
			CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
			offsetof(struct hc_status_block_data_e1x, index_data) +
			sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4810
			offsetof(struct hc_index_data, timeout), 64 / 4);
4811
	cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4812 4813 4814 4815 4816 4817
}

static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
{
}

4818 4819
static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
				    struct client_init_ramrod_data *data)
4820 4821
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4822 4823 4824
	struct cnic_uio_dev *udev = cp->udev;
	union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
	dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4825
	struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4826
	int i;
4827
	u32 cli = cp->ethdev->iscsi_l2_client_id;
4828 4829 4830 4831
	u32 val;

	memset(txbd, 0, BCM_PAGE_SIZE);

M
Michael Chan 已提交
4832
	buf_map = udev->l2_buf_map;
4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849
	for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
		struct eth_tx_start_bd *start_bd = &txbd->start_bd;
		struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);

		start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
		start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
		reg_bd->addr_hi = start_bd->addr_hi;
		reg_bd->addr_lo = start_bd->addr_lo + 0x10;
		start_bd->nbytes = cpu_to_le16(0x10);
		start_bd->nbd = cpu_to_le16(3);
		start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
		start_bd->general_data = (UNICAST_ADDRESS <<
			ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
		start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);

	}

4850
	val = (u64) ring_map >> 32;
4851 4852
	txbd->next_bd.addr_hi = cpu_to_le32(val);

4853
	data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4854

4855
	val = (u64) ring_map & 0xffffffff;
4856 4857
	txbd->next_bd.addr_lo = cpu_to_le32(val);

4858
	data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4859

4860 4861 4862
	/* Other ramrod params */
	data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
	data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4863 4864

	/* reset xstorm per client statistics */
4865
	if (cli < MAX_STAT_COUNTER_ID) {
4866 4867 4868
		data->general.statistics_zero_flg = 1;
		data->general.statistics_en_flg = 1;
		data->general.statistics_counter_id = cli;
4869
	}
4870 4871

	cp->tx_cons_ptr =
4872
		&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4873 4874
}

4875 4876
static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
				    struct client_init_ramrod_data *data)
4877 4878
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4879 4880
	struct cnic_uio_dev *udev = cp->udev;
	struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4881 4882
				BCM_PAGE_SIZE);
	struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
M
Michael Chan 已提交
4883
				(udev->l2_ring + (2 * BCM_PAGE_SIZE));
4884
	struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4885
	int i;
4886
	u32 cli = cp->ethdev->iscsi_l2_client_id;
4887
	int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4888
	u32 val;
M
Michael Chan 已提交
4889
	dma_addr_t ring_map = udev->l2_ring_map;
4890 4891 4892 4893 4894

	/* General data */
	data->general.client_id = cli;
	data->general.activate_flg = 1;
	data->general.sp_client_id = cli;
4895 4896
	data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
	data->general.func_id = cp->pfid;
4897 4898 4899 4900 4901

	for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
		dma_addr_t buf_map;
		int n = (i % cp->l2_rx_ring_size) + 1;

M
Michael Chan 已提交
4902
		buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4903 4904 4905 4906
		rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
		rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
	}

4907
	val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4908
	rxbd->addr_hi = cpu_to_le32(val);
4909
	data->rx.bd_page_base.hi = cpu_to_le32(val);
4910

4911
	val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4912
	rxbd->addr_lo = cpu_to_le32(val);
4913
	data->rx.bd_page_base.lo = cpu_to_le32(val);
4914 4915

	rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4916
	val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4917
	rxcqe->addr_hi = cpu_to_le32(val);
4918
	data->rx.cqe_page_base.hi = cpu_to_le32(val);
4919

4920
	val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4921
	rxcqe->addr_lo = cpu_to_le32(val);
4922
	data->rx.cqe_page_base.lo = cpu_to_le32(val);
4923

4924 4925 4926 4927
	/* Other ramrod params */
	data->rx.client_qzone_id = cl_qzone_id;
	data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
	data->rx.status_block_id = BNX2X_DEF_SB_ID;
4928

4929
	data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4930

4931
	data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
4932
	data->rx.outer_vlan_removal_enable_flg = 1;
4933 4934 4935
	data->rx.silent_vlan_removal_flg = 1;
	data->rx.silent_vlan_value = 0;
	data->rx.silent_vlan_mask = 0xffff;
4936 4937

	cp->rx_cons_ptr =
4938
		&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4939
	cp->rx_cons = *cp->rx_cons_ptr;
4940 4941
}

M
Michael Chan 已提交
4942 4943 4944 4945 4946 4947 4948 4949 4950
static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 pfid = cp->pfid;

	cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
			   CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
	cp->kcq1.sw_prod_idx = 0;

4951
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966
		struct host_hc_status_block_e2 *sb = cp->status_blk.gen;

		cp->kcq1.hw_prod_idx_ptr =
			&sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
		cp->kcq1.status_idx_ptr =
			&sb->sb.running_index[SM_RX_ID];
	} else {
		struct host_hc_status_block_e1x *sb = cp->status_blk.gen;

		cp->kcq1.hw_prod_idx_ptr =
			&sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
		cp->kcq1.status_idx_ptr =
			&sb->sb.running_index[SM_RX_ID];
	}

4967
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979
		struct host_hc_status_block_e2 *sb = cp->status_blk.gen;

		cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
					USTORM_FCOE_EQ_PROD_OFFSET(pfid);
		cp->kcq2.sw_prod_idx = 0;
		cp->kcq2.hw_prod_idx_ptr =
			&sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
		cp->kcq2.status_idx_ptr =
			&sb->sb.running_index[SM_RX_ID];
	}
}

4980 4981 4982
static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
4983
	struct cnic_eth_dev *ethdev = cp->ethdev;
4984
	int func = CNIC_FUNC(cp), ret;
4985
	u32 pfid;
4986

4987
	dev->stats_addr = ethdev->addr_drv_info_to_mcp;
4988 4989 4990
	cp->port_mode = CHIP_PORT_MODE_NONE;

	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
4991 4992 4993 4994 4995 4996 4997
		u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);

		if (!(val & 1))
			val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN);
		else
			val = (val >> 1) & 1;

4998 4999
		if (val) {
			cp->port_mode = CHIP_4_PORT_MODE;
M
Michael Chan 已提交
5000
			cp->pfid = func >> 1;
5001
		} else {
M
Michael Chan 已提交
5002
			cp->port_mode = CHIP_2_PORT_MODE;
M
Michael Chan 已提交
5003
			cp->pfid = func & 0x6;
5004
		}
M
Michael Chan 已提交
5005 5006 5007
	} else {
		cp->pfid = func;
	}
5008 5009
	pfid = cp->pfid;

5010
	ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5011
			       cp->iscsi_start_cid, 0);
5012 5013 5014 5015

	if (ret)
		return -ENOMEM;

5016
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
5017
		ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5018
					cp->fcoe_start_cid, 0);
M
Michael Chan 已提交
5019 5020 5021 5022 5023

		if (ret)
			return -ENOMEM;
	}

5024 5025
	cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;

M
Michael Chan 已提交
5026
	cnic_init_bnx2x_kcq(dev);
5027 5028

	/* Only 1 EQ */
5029
	CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5030
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5031
		CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5032
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5033
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5034
		cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5035
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5036
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5037
		(u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5038
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5039
		CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5040
		cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5041
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5042
		CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5043
		(u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5044
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5045
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5046
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5047
		CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5048
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5049
		CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5050
		HC_INDEX_ISCSI_EQ_CONS);
5051 5052

	CNIC_WR(dev, BAR_USTRORM_INTMEM +
5053
		USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5054 5055
		cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
5056
		USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5057 5058
		(u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);

5059 5060 5061
	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
		TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);

5062 5063 5064 5065 5066 5067 5068 5069 5070
	cnic_setup_bnx2x_context(dev);

	ret = cnic_init_bnx2x_irq(dev);
	if (ret)
		return ret;

	return 0;
}

M
Michael Chan 已提交
5071 5072
static void cnic_init_rings(struct cnic_dev *dev)
{
M
Michael Chan 已提交
5073
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
5074
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
5075 5076 5077 5078

	if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
		return;

M
Michael Chan 已提交
5079 5080 5081
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
		cnic_init_bnx2_tx_ring(dev);
		cnic_init_bnx2_rx_ring(dev);
M
Michael Chan 已提交
5082
		set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5083
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5084 5085
		u32 cli = cp->ethdev->iscsi_l2_client_id;
		u32 cid = cp->ethdev->iscsi_l2_cid;
5086
		u32 cl_qzone_id;
5087
		struct client_init_ramrod_data *data;
5088 5089
		union l5cm_specific_data l5_data;
		struct ustorm_eth_rx_producers rx_prods = {0};
5090
		u32 off, i, *cid_ptr;
5091 5092 5093 5094 5095

		rx_prods.bd_prod = 0;
		rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
		barrier();

5096 5097
		cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);

5098
		off = BAR_USTRORM_INTMEM +
5099
			(BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) ?
M
Michael Chan 已提交
5100 5101
			 USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
			 USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
5102 5103

		for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5104
			CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5105

5106 5107
		set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

M
Michael Chan 已提交
5108
		data = udev->l2_buf;
5109
		cid_ptr = udev->l2_buf + 12;
5110 5111 5112 5113 5114 5115

		memset(data, 0, sizeof(*data));

		cnic_init_bnx2x_tx_ring(dev, data);
		cnic_init_bnx2x_rx_ring(dev, data);

M
Michael Chan 已提交
5116 5117
		l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
		l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5118

M
Michael Chan 已提交
5119 5120
		set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);

5121
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5122
			cid, ETH_CONNECTION_TYPE, &l5_data);
5123

5124 5125 5126 5127 5128 5129 5130 5131
		i = 0;
		while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
		       ++i < 10)
			msleep(1);

		if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
			netdev_err(dev->netdev,
				"iSCSI CLIENT_SETUP did not complete\n");
5132
		cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5133
		cnic_ring_ctl(dev, cid, cli, 1);
5134
		*cid_ptr = cid;
M
Michael Chan 已提交
5135 5136 5137 5138 5139
	}
}

static void cnic_shutdown_rings(struct cnic_dev *dev)
{
M
Michael Chan 已提交
5140
	struct cnic_local *cp = dev->cnic_priv;
5141 5142
	struct cnic_uio_dev *udev = cp->udev;
	void *rx_ring;
M
Michael Chan 已提交
5143 5144 5145 5146

	if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
		return;

M
Michael Chan 已提交
5147 5148
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
		cnic_shutdown_bnx2_rx_ring(dev);
5149
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5150 5151
		u32 cli = cp->ethdev->iscsi_l2_client_id;
		u32 cid = cp->ethdev->iscsi_l2_cid;
M
Michael Chan 已提交
5152
		union l5cm_specific_data l5_data;
5153
		int i;
5154

5155
		cnic_ring_ctl(dev, cid, cli, 0);
M
Michael Chan 已提交
5156

5157 5158
		set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

M
Michael Chan 已提交
5159 5160 5161
		l5_data.phy_address.lo = cli;
		l5_data.phy_address.hi = 0;
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5162
			cid, ETH_CONNECTION_TYPE, &l5_data);
5163 5164 5165 5166 5167 5168 5169 5170
		i = 0;
		while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
		       ++i < 10)
			msleep(1);

		if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
			netdev_err(dev->netdev,
				"iSCSI CLIENT_HALT did not complete\n");
5171
		cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5172 5173

		memset(&l5_data, 0, sizeof(l5_data));
5174
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5175
			cid, NONE_CONNECTION_TYPE, &l5_data);
5176
		msleep(10);
M
Michael Chan 已提交
5177
	}
M
Michael Chan 已提交
5178
	clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5179 5180
	rx_ring = udev->l2_ring + BCM_PAGE_SIZE;
	memset(rx_ring, 0, BCM_PAGE_SIZE);
M
Michael Chan 已提交
5181 5182
}

5183
static int cnic_register_netdev(struct cnic_dev *dev)
5184 5185 5186 5187 5188
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int err;

5189 5190 5191 5192 5193
	if (!ethdev)
		return -ENODEV;

	if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
		return 0;
5194 5195

	err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5196
	if (err)
5197
		netdev_err(dev->netdev, "register_cnic failed\n");
5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220

	return err;
}

static void cnic_unregister_netdev(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;

	if (!ethdev)
		return;

	ethdev->drv_unregister_cnic(dev->netdev);
}

static int cnic_start_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int err;

	if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
		return -EALREADY;
5221 5222 5223 5224

	dev->regview = ethdev->io_base;
	pci_dev_get(dev->pcidev);
	cp->func = PCI_FUNC(dev->pcidev->devfn);
5225
	cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5226 5227 5228 5229
	cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;

	err = cp->alloc_resc(dev);
	if (err) {
5230
		netdev_err(dev->netdev, "allocate resource failure\n");
5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269
		goto err1;
	}

	err = cp->start_hw(dev);
	if (err)
		goto err1;

	err = cnic_cm_open(dev);
	if (err)
		goto err1;

	set_bit(CNIC_F_CNIC_UP, &dev->flags);

	cp->enable_int(dev);

	return 0;

err1:
	cp->free_resc(dev);
	pci_dev_put(dev->pcidev);
	return err;
}

static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
{
	cnic_disable_bnx2_int_sync(dev);

	cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
	cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);

	cnic_init_context(dev, KWQ_CID);
	cnic_init_context(dev, KCQ_CID);

	cnic_setup_5709_context(dev, 0);
	cnic_free_irq(dev);

	cnic_free_resc(dev);
}

5270 5271 5272 5273 5274 5275

static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

	cnic_free_irq(dev);
5276
	*cp->kcq1.hw_prod_idx_ptr = 0;
5277
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5278
		CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5279
	CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5280 5281 5282
	cnic_free_resc(dev);
}

5283 5284 5285 5286
static void cnic_stop_hw(struct cnic_dev *dev)
{
	if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
		struct cnic_local *cp = dev->cnic_priv;
5287
		int i = 0;
5288

5289 5290 5291
		/* Need to wait for the ring shutdown event to complete
		 * before clearing the CNIC_UP flag.
		 */
M
Michael Chan 已提交
5292
		while (cp->udev->uio_dev != -1 && i < 15) {
5293 5294 5295
			msleep(100);
			i++;
		}
5296
		cnic_shutdown_rings(dev);
5297
		cp->stop_cm(dev);
5298
		clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5299
		RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315
		synchronize_rcu();
		cnic_cm_shutdown(dev);
		cp->stop_hw(dev);
		pci_dev_put(dev->pcidev);
	}
}

static void cnic_free_dev(struct cnic_dev *dev)
{
	int i = 0;

	while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
		msleep(100);
		i++;
	}
	if (atomic_read(&dev->ref_count) != 0)
5316
		netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5317

5318
	netdev_info(dev->netdev, "Removed CNIC device\n");
5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333
	dev_put(dev->netdev);
	kfree(dev);
}

static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
				       struct pci_dev *pdev)
{
	struct cnic_dev *cdev;
	struct cnic_local *cp;
	int alloc_size;

	alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);

	cdev = kzalloc(alloc_size , GFP_KERNEL);
	if (cdev == NULL) {
5334
		netdev_err(dev, "allocate dev struct failure\n");
5335 5336 5337 5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350
		return NULL;
	}

	cdev->netdev = dev;
	cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
	cdev->register_device = cnic_register_device;
	cdev->unregister_device = cnic_unregister_device;
	cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;

	cp = cdev->cnic_priv;
	cp->dev = cdev;
	cp->l2_single_buf_size = 0x400;
	cp->l2_rx_ring_size = 3;

	spin_lock_init(&cp->cnic_ulp_lock);

5351
	netdev_info(dev, "Added CNIC device\n");
5352 5353 5354 5355 5356 5357 5358 5359 5360 5361

	return cdev;
}

static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
{
	struct pci_dev *pdev;
	struct cnic_dev *cdev;
	struct cnic_local *cp;
	struct cnic_eth_dev *ethdev = NULL;
5362
	struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5363

5364
	probe = symbol_get(bnx2_cnic_probe);
5365 5366
	if (probe) {
		ethdev = (*probe)(dev);
5367
		symbol_put(bnx2_cnic_probe);
5368 5369 5370 5371 5372 5373 5374 5375 5376 5377
	}
	if (!ethdev)
		return NULL;

	pdev = ethdev->pdev;
	if (!pdev)
		return NULL;

	dev_hold(dev);
	pci_dev_get(pdev);
5378 5379 5380 5381 5382
	if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
	     pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
	    (pdev->revision < 0x10)) {
		pci_dev_put(pdev);
		goto cnic_err;
5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395
	}
	pci_dev_put(pdev);

	cdev = cnic_alloc_dev(dev, pdev);
	if (cdev == NULL)
		goto cnic_err;

	set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
	cdev->submit_kwqes = cnic_submit_bnx2_kwqes;

	cp = cdev->cnic_priv;
	cp->ethdev = ethdev;
	cdev->pcidev = pdev;
M
Michael Chan 已提交
5396
	cp->chip_id = ethdev->chip_id;
5397

5398 5399
	cdev->max_iscsi_conn = ethdev->max_iscsi_conn;

5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414 5415 5416 5417
	cp->cnic_ops = &cnic_bnx2_ops;
	cp->start_hw = cnic_start_bnx2_hw;
	cp->stop_hw = cnic_stop_bnx2_hw;
	cp->setup_pgtbl = cnic_setup_page_tbl;
	cp->alloc_resc = cnic_alloc_bnx2_resc;
	cp->free_resc = cnic_free_resc;
	cp->start_cm = cnic_cm_init_bnx2_hw;
	cp->stop_cm = cnic_cm_stop_bnx2_hw;
	cp->enable_int = cnic_enable_bnx2_int;
	cp->disable_int_sync = cnic_disable_bnx2_int_sync;
	cp->close_conn = cnic_close_bnx2_conn;
	return cdev;

cnic_err:
	dev_put(dev);
	return NULL;
}

5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444 5445 5446 5447 5448 5449 5450
static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
{
	struct pci_dev *pdev;
	struct cnic_dev *cdev;
	struct cnic_local *cp;
	struct cnic_eth_dev *ethdev = NULL;
	struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;

	probe = symbol_get(bnx2x_cnic_probe);
	if (probe) {
		ethdev = (*probe)(dev);
		symbol_put(bnx2x_cnic_probe);
	}
	if (!ethdev)
		return NULL;

	pdev = ethdev->pdev;
	if (!pdev)
		return NULL;

	dev_hold(dev);
	cdev = cnic_alloc_dev(dev, pdev);
	if (cdev == NULL) {
		dev_put(dev);
		return NULL;
	}

	set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
	cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;

	cp = cdev->cnic_priv;
	cp->ethdev = ethdev;
	cdev->pcidev = pdev;
M
Michael Chan 已提交
5451
	cp->chip_id = ethdev->chip_id;
5452

5453 5454
	cdev->stats_addr = ethdev->addr_drv_info_to_mcp;

5455 5456
	if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
		cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5457
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
5458 5459 5460
	    !(ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE))
		cdev->max_fcoe_conn = ethdev->max_fcoe_conn;

5461 5462 5463
	if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
		cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;

5464 5465
	memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);

5466 5467 5468 5469 5470 5471 5472 5473 5474 5475
	cp->cnic_ops = &cnic_bnx2x_ops;
	cp->start_hw = cnic_start_bnx2x_hw;
	cp->stop_hw = cnic_stop_bnx2x_hw;
	cp->setup_pgtbl = cnic_setup_page_tbl_le;
	cp->alloc_resc = cnic_alloc_bnx2x_resc;
	cp->free_resc = cnic_free_resc;
	cp->start_cm = cnic_cm_init_bnx2x_hw;
	cp->stop_cm = cnic_cm_stop_bnx2x_hw;
	cp->enable_int = cnic_enable_bnx2x_int;
	cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5476
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
M
Michael Chan 已提交
5477 5478 5479
		cp->ack_int = cnic_ack_bnx2x_e2_msix;
	else
		cp->ack_int = cnic_ack_bnx2x_msix;
5480 5481 5482 5483
	cp->close_conn = cnic_close_bnx2x_conn;
	return cdev;
}

5484 5485 5486 5487 5488 5489 5490 5491 5492 5493 5494
static struct cnic_dev *is_cnic_dev(struct net_device *dev)
{
	struct ethtool_drvinfo drvinfo;
	struct cnic_dev *cdev = NULL;

	if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
		memset(&drvinfo, 0, sizeof(drvinfo));
		dev->ethtool_ops->get_drvinfo(dev, &drvinfo);

		if (!strcmp(drvinfo.driver, "bnx2"))
			cdev = init_bnx2_cnic(dev);
5495 5496
		if (!strcmp(drvinfo.driver, "bnx2x"))
			cdev = init_bnx2x_cnic(dev);
5497 5498 5499 5500 5501 5502 5503 5504 5505
		if (cdev) {
			write_lock(&cnic_dev_lock);
			list_add(&cdev->list, &cnic_dev_list);
			write_unlock(&cnic_dev_lock);
		}
	}
	return cdev;
}

5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526
static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
			      u16 vlan_id)
{
	int if_type;

	rcu_read_lock();
	for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
		struct cnic_ulp_ops *ulp_ops;
		void *ctx;

		ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
		if (!ulp_ops || !ulp_ops->indicate_netevent)
			continue;

		ctx = cp->ulp_handle[if_type];

		ulp_ops->indicate_netevent(ctx, event, vlan_id);
	}
	rcu_read_unlock();
}

5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538
/**
 * netdev event handler
 */
static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
							 void *ptr)
{
	struct net_device *netdev = ptr;
	struct cnic_dev *dev;
	int new_dev = 0;

	dev = cnic_from_netdev(netdev);

5539
	if (!dev && (event == NETDEV_REGISTER || netif_running(netdev))) {
5540 5541 5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553
		/* Check for the hot-plug device */
		dev = is_cnic_dev(netdev);
		if (dev) {
			new_dev = 1;
			cnic_hold(dev);
		}
	}
	if (dev) {
		struct cnic_local *cp = dev->cnic_priv;

		if (new_dev)
			cnic_ulp_init(dev);
		else if (event == NETDEV_UNREGISTER)
			cnic_ulp_exit(dev);
5554

5555
		if (event == NETDEV_UP || (new_dev && netif_running(netdev))) {
5556 5557 5558 5559
			if (cnic_register_netdev(dev) != 0) {
				cnic_put(dev);
				goto done;
			}
5560 5561 5562 5563
			if (!cnic_start_hw(dev))
				cnic_ulp_start(dev);
		}

5564
		cnic_rcv_netevent(cp, event, 0);
5565 5566 5567 5568

		if (event == NETDEV_GOING_DOWN) {
			cnic_ulp_stop(dev);
			cnic_stop_hw(dev);
5569
			cnic_unregister_netdev(dev);
5570 5571 5572 5573 5574 5575 5576 5577 5578 5579
		} else if (event == NETDEV_UNREGISTER) {
			write_lock(&cnic_dev_lock);
			list_del_init(&dev->list);
			write_unlock(&cnic_dev_lock);

			cnic_put(dev);
			cnic_free_dev(dev);
			goto done;
		}
		cnic_put(dev);
5580 5581 5582 5583 5584 5585 5586 5587 5588 5589 5590 5591 5592
	} else {
		struct net_device *realdev;
		u16 vid;

		vid = cnic_get_vlan(netdev, &realdev);
		if (realdev) {
			dev = cnic_from_netdev(realdev);
			if (dev) {
				vid |= VLAN_TAG_PRESENT;
				cnic_rcv_netevent(dev->cnic_priv, event, vid);
				cnic_put(dev);
			}
		}
5593 5594 5595 5596 5597 5598 5599 5600 5601 5602 5603 5604
	}
done:
	return NOTIFY_DONE;
}

static struct notifier_block cnic_netdev_notifier = {
	.notifier_call = cnic_netdev_event
};

static void cnic_release(void)
{
	struct cnic_dev *dev;
5605
	struct cnic_uio_dev *udev;
5606 5607 5608 5609 5610 5611 5612 5613 5614

	while (!list_empty(&cnic_dev_list)) {
		dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
		if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
			cnic_ulp_stop(dev);
			cnic_stop_hw(dev);
		}

		cnic_ulp_exit(dev);
5615
		cnic_unregister_netdev(dev);
5616 5617 5618
		list_del_init(&dev->list);
		cnic_free_dev(dev);
	}
5619 5620 5621 5622 5623
	while (!list_empty(&cnic_udev_list)) {
		udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
				  list);
		cnic_free_uio(udev);
	}
5624 5625 5626 5627 5628 5629
}

static int __init cnic_init(void)
{
	int rc = 0;

5630
	pr_info("%s", version);
5631 5632 5633 5634 5635 5636 5637

	rc = register_netdevice_notifier(&cnic_netdev_notifier);
	if (rc) {
		cnic_release();
		return rc;
	}

5638 5639 5640 5641 5642 5643 5644
	cnic_wq = create_singlethread_workqueue("cnic_wq");
	if (!cnic_wq) {
		cnic_release();
		unregister_netdevice_notifier(&cnic_netdev_notifier);
		return -ENOMEM;
	}

5645 5646 5647 5648 5649 5650 5651
	return 0;
}

static void __exit cnic_exit(void)
{
	unregister_netdevice_notifier(&cnic_netdev_notifier);
	cnic_release();
5652
	destroy_workqueue(cnic_wq);
5653 5654 5655 5656
}

module_init(cnic_init);
module_exit(cnic_exit);