cnic.c 128.2 KB
Newer Older
1 2
/* cnic.c: Broadcom CNIC core network driver.
 *
M
Michael Chan 已提交
3
 * Copyright (c) 2006-2010 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 30 31 32 33 34 35 36 37
#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>
#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>
38
#include <net/ip6_checksum.h>
39 40 41 42
#include <scsi/iscsi_if.h>

#include "cnic_if.h"
#include "bnx2.h"
43 44 45
#include "bnx2x/bnx2x_reg.h"
#include "bnx2x/bnx2x_fw_defs.h"
#include "bnx2x/bnx2x_hsi.h"
M
Michael Chan 已提交
46 47
#include "../scsi/bnx2i/57xx_iscsi_constants.h"
#include "../scsi/bnx2i/57xx_iscsi_hsi.h"
48 49 50 51 52 53 54 55 56 57 58 59 60 61
#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);

62
/* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
63
static LIST_HEAD(cnic_dev_list);
64
static LIST_HEAD(cnic_udev_list);
65 66 67 68 69 70
static DEFINE_RWLOCK(cnic_dev_lock);
static DEFINE_MUTEX(cnic_lock);

static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];

static int cnic_service_bnx2(void *, void *);
71
static int cnic_service_bnx2x(void *, void *);
72 73 74 75 76 77 78 79
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,
};

80 81 82 83 84 85
static struct cnic_ops cnic_bnx2x_ops = {
	.cnic_owner	= THIS_MODULE,
	.cnic_handler	= cnic_service_bnx2x,
	.cnic_ctl	= cnic_ctl,
};

86 87
static struct workqueue_struct *cnic_wq;

M
Michael Chan 已提交
88 89
static void cnic_shutdown_rings(struct cnic_dev *);
static void cnic_init_rings(struct cnic_dev *);
90 91 92 93
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
94 95
	struct cnic_uio_dev *udev = uinfo->priv;
	struct cnic_dev *dev;
96 97 98 99

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

M
Michael Chan 已提交
100
	if (udev->uio_dev != -1)
101 102
		return -EBUSY;

M
Michael Chan 已提交
103
	rtnl_lock();
M
Michael Chan 已提交
104 105
	dev = udev->dev;

106
	if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
M
Michael Chan 已提交
107 108 109 110
		rtnl_unlock();
		return -ENODEV;
	}

M
Michael Chan 已提交
111
	udev->uio_dev = iminor(inode);
112

113
	cnic_shutdown_rings(dev);
M
Michael Chan 已提交
114 115
	cnic_init_rings(dev);
	rtnl_unlock();
116 117 118 119 120 121

	return 0;
}

static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
{
M
Michael Chan 已提交
122
	struct cnic_uio_dev *udev = uinfo->priv;
123

M
Michael Chan 已提交
124
	udev->uio_dev = -1;
125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163
	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;
}

164 165 166 167 168 169 170 171 172 173
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);
}

174 175 176 177 178 179 180 181 182 183 184 185 186 187
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);
}

188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217
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);
}

218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248
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;
}

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

249
static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
250 251 252 253 254
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;

255 256
	info.cmd = cmd;
	info.data.credit.credit_count = count;
257 258 259
	ethdev->drv_ctl(dev->netdev, &info);
}

260 261 262 263
static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
{
	u32 i;

264
	for (i = 0; i < cp->max_cid_space; i++) {
265 266 267 268 269 270 271 272
		if (cp->ctx_tbl[i].cid == cid) {
			*l5_cid = i;
			return 0;
		}
	}
	return -EINVAL;
}

273 274 275 276 277 278 279 280
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
281
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
282
	int rc = 0, retry = 0;
283

M
Michael Chan 已提交
284
	if (!udev || udev->uio_dev == -1)
285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306
		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
307 308 309 310 311 312 313 314 315 316 317 318 319 320 321
	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++;
	}
322 323 324
	return 0;
}

325 326
static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);

327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347
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;

348 349 350 351 352 353
		rcu_read_lock();
		if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
			rc = -ENODEV;
			rcu_read_unlock();
			break;
		}
354 355
		csk = &cp->csk_tbl[l5_cid];
		csk_hold(csk);
356 357 358
		if (cnic_in_use(csk) &&
		    test_bit(SK_F_CONNECT_START, &csk->flags)) {

359 360 361 362 363 364 365
			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));
366 367

			if (is_valid_ether_addr(csk->ha)) {
368
				cnic_cm_set_pg(csk);
369 370 371 372 373 374 375
			} 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);
			}
376 377
		}
		csk_put(csk);
378
		rcu_read_unlock();
379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428
		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;
}

429 430 431 432 433 434 435 436
static void cnic_uio_stop(void)
{
	struct cnic_dev *dev;

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

M
Michael Chan 已提交
437
		cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
438 439 440 441
	}
	read_unlock(&cnic_dev_lock);
}

442 443 444 445
int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
{
	struct cnic_dev *dev;

R
roel kluin 已提交
446
	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
447
		pr_err("%s: Bad type %d\n", __func__, ulp_type);
448 449 450 451
		return -EINVAL;
	}
	mutex_lock(&cnic_lock);
	if (cnic_ulp_tbl[ulp_type]) {
452 453
		pr_err("%s: Type %d has already been registered\n",
		       __func__, ulp_type);
454 455 456 457 458 459 460 461 462 463 464 465
		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);

466
	atomic_set(&ulp_ops->ref_count, 0);
467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485
	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;
486 487
	struct cnic_ulp_ops *ulp_ops;
	int i = 0;
488

R
roel kluin 已提交
489
	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
490
		pr_err("%s: Bad type %d\n", __func__, ulp_type);
491 492 493
		return -EINVAL;
	}
	mutex_lock(&cnic_lock);
494 495
	ulp_ops = cnic_ulp_tbl[ulp_type];
	if (!ulp_ops) {
496 497
		pr_err("%s: Type %d has not been registered\n",
		       __func__, ulp_type);
498 499 500 501 502 503 504
		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])) {
505 506
			pr_err("%s: Type %d still has devices registered\n",
			       __func__, ulp_type);
507 508 509 510 511 512
			read_unlock(&cnic_dev_lock);
			goto out_unlock;
		}
	}
	read_unlock(&cnic_dev_lock);

513 514 515
	if (ulp_type == CNIC_ULP_ISCSI)
		cnic_uio_stop();

516 517 518 519
	rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);

	mutex_unlock(&cnic_lock);
	synchronize_rcu();
520 521 522 523 524 525
	while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
		msleep(100);
		i++;
	}

	if (atomic_read(&ulp_ops->ref_count) != 0)
526
		netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542
	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
543
	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
544
		pr_err("%s: Bad type %d\n", __func__, ulp_type);
545 546 547 548
		return -EINVAL;
	}
	mutex_lock(&cnic_lock);
	if (cnic_ulp_tbl[ulp_type] == NULL) {
549 550
		pr_err("%s: Driver with type %d has not been registered\n",
		       __func__, ulp_type);
551 552 553 554
		mutex_unlock(&cnic_lock);
		return -EAGAIN;
	}
	if (rcu_dereference(cp->ulp_ops[ulp_type])) {
555 556
		pr_err("%s: Type %d has already been registered to this device\n",
		       __func__, ulp_type);
557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580
		mutex_unlock(&cnic_lock);
		return -EBUSY;
	}

	clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
	cp->ulp_handle[ulp_type] = ulp_ctx;
	ulp_ops = cnic_ulp_tbl[ulp_type];
	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);

	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;
581
	int i = 0;
582

R
roel kluin 已提交
583
	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
584
		pr_err("%s: Bad type %d\n", __func__, ulp_type);
585 586 587 588 589 590 591
		return -EINVAL;
	}
	mutex_lock(&cnic_lock);
	if (rcu_dereference(cp->ulp_ops[ulp_type])) {
		rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
		cnic_put(dev);
	} else {
592 593
		pr_err("%s: device not registered to this ulp type %d\n",
		       __func__, ulp_type);
594 595 596 597 598 599 600
		mutex_unlock(&cnic_lock);
		return -EINVAL;
	}
	mutex_unlock(&cnic_lock);

	synchronize_rcu();

601 602 603 604 605 606
	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]))
607
		netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
608

609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696
	return 0;
}
EXPORT_SYMBOL(cnic_unregister_driver);

static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
{
	id_tbl->start = start_id;
	id_tbl->max = size;
	id_tbl->next = 0;
	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
697 698
			dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
					  dma->pg_arr[i], dma->pg_map_arr[i]);
699 700 701 702
			dma->pg_arr[i] = NULL;
		}
	}
	if (dma->pgtbl) {
M
Michael Chan 已提交
703 704
		dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
				  dma->pgtbl, dma->pgtbl_map);
705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725
		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;
	u32 *page_table = dma->pgtbl;

	for (i = 0; i < dma->num_pages; i++) {
		/* Each entry needs to be in big endian format. */
		*page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
		page_table++;
		*page_table = (u32) dma->pg_map_arr[i];
		page_table++;
	}
}

726 727 728 729 730 731 732 733 734 735 736 737 738 739
static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
{
	int i;
	u32 *page_table = dma->pgtbl;

	for (i = 0; i < dma->num_pages; i++) {
		/* Each entry needs to be in little endian format. */
		*page_table = dma->pg_map_arr[i] & 0xffffffff;
		page_table++;
		*page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
		page_table++;
	}
}

740 741 742 743 744 745 746 747 748 749 750 751 752 753 754
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
755 756 757 758
		dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
						    BCM_PAGE_SIZE,
						    &dma->pg_map_arr[i],
						    GFP_ATOMIC);
759 760 761 762 763 764 765 766
		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
767 768
	dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
					&dma->pgtbl_map, GFP_ATOMIC);
769 770 771 772 773 774 775 776 777 778 779 780
	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
781 782 783 784 785 786 787
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
788 789 790
			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
791 792 793 794 795
			cp->ctx_arr[i].ctx = NULL;
		}
	}
}

M
Michael Chan 已提交
796
static void __cnic_free_uio(struct cnic_uio_dev *udev)
797
{
M
Michael Chan 已提交
798
	uio_unregister_device(&udev->cnic_uinfo);
M
Michael Chan 已提交
799

M
Michael Chan 已提交
800 801 802 803
	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;
804 805
	}

M
Michael Chan 已提交
806 807 808 809
	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;
810
	}
811 812 813

	pci_dev_put(udev->pdev);
	kfree(udev);
M
Michael Chan 已提交
814 815
}

M
Michael Chan 已提交
816
static void cnic_free_uio(struct cnic_uio_dev *udev)
M
Michael Chan 已提交
817
{
M
Michael Chan 已提交
818
	if (!udev)
M
Michael Chan 已提交
819 820
		return;

821 822 823
	write_lock(&cnic_dev_lock);
	list_del_init(&udev->list);
	write_unlock(&cnic_dev_lock);
M
Michael Chan 已提交
824
	__cnic_free_uio(udev);
M
Michael Chan 已提交
825 826 827 828 829
}

static void cnic_free_resc(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
830
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
831

M
Michael Chan 已提交
832
	if (udev) {
833
		udev->dev = NULL;
M
Michael Chan 已提交
834
		cp->udev = NULL;
M
Michael Chan 已提交
835
	}
836

M
Michael Chan 已提交
837
	cnic_free_context(dev);
838 839 840 841 842 843 844
	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->conn_buf_info);
	cnic_free_dma(dev, &cp->kwq_info);
845
	cnic_free_dma(dev, &cp->kwq_16_data_info);
846
	cnic_free_dma(dev, &cp->kcq1.dma);
847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893
	kfree(cp->iscsi_tbl);
	cp->iscsi_tbl = NULL;
	kfree(cp->ctx_tbl);
	cp->ctx_tbl = NULL;

	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
894 895 896 897
				dma_alloc_coherent(&dev->pcidev->dev,
						   BCM_PAGE_SIZE,
						   &cp->ctx_arr[i].mapping,
						   GFP_KERNEL);
898 899 900 901 902 903 904
			if (cp->ctx_arr[i].ctx == NULL)
				return -ENOMEM;
		}
	}
	return 0;
}

905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935
static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info)
{
	int err, i, is_bnx2 = 0;
	struct kcqe **kcq;

	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags))
		is_bnx2 = 1;

	err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, is_bnx2);
	if (err)
		return err;

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

	if (is_bnx2)
		return 0;

	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
936
static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
937 938
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
939 940
	struct cnic_uio_dev *udev;

941 942 943 944 945 946 947 948 949 950 951
	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
952 953 954 955 956
	udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
	if (!udev)
		return -ENOMEM;

	udev->uio_dev = -1;
957

M
Michael Chan 已提交
958 959 960 961 962 963 964
	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)
965 966
		return -ENOMEM;

M
Michael Chan 已提交
967 968 969 970 971 972
	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)
973 974
		return -ENOMEM;

975 976 977 978 979 980
	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
981 982
	cp->udev = udev;

983 984 985
	return 0;
}

M
Michael Chan 已提交
986 987
static int cnic_init_uio(struct cnic_dev *dev)
{
988
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
989
	struct cnic_uio_dev *udev = cp->udev;
990
	struct uio_info *uinfo;
M
Michael Chan 已提交
991
	int ret = 0;
992

M
Michael Chan 已提交
993
	if (!udev)
994
		return -ENOMEM;
995

M
Michael Chan 已提交
996 997
	uinfo = &udev->cnic_uinfo;

998 999 1000 1001 1002
	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;

1003
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1004
		uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
M
Michael Chan 已提交
1005
					PAGE_MASK;
1006 1007 1008 1009 1010 1011
		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";
1012 1013 1014
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
		uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
			PAGE_MASK;
1015
		uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1016 1017

		uinfo->name = "bnx2x_cnic";
1018 1019
	}

1020 1021
	uinfo->mem[1].memtype = UIO_MEM_LOGICAL;

M
Michael Chan 已提交
1022 1023
	uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
	uinfo->mem[2].size = udev->l2_ring_size;
1024 1025
	uinfo->mem[2].memtype = UIO_MEM_LOGICAL;

M
Michael Chan 已提交
1026 1027
	uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
	uinfo->mem[3].size = udev->l2_buf_size;
1028 1029 1030 1031 1032 1033 1034 1035
	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;

1036 1037 1038
	if (udev->uio_dev == -1) {
		if (!uinfo->priv) {
			uinfo->priv = udev;
1039

1040 1041 1042 1043 1044
			ret = uio_register_device(&udev->pdev->dev, uinfo);
		}
	} else {
		cnic_init_rings(dev);
	}
1045

M
Michael Chan 已提交
1046
	return ret;
1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058
}

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;

1059
	ret = cnic_alloc_kcq(dev, &cp->kcq1);
1060 1061 1062 1063 1064 1065 1066
	if (ret)
		goto error;

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

M
Michael Chan 已提交
1067
	ret = cnic_alloc_uio_rings(dev, 2);
1068 1069 1070
	if (ret)
		goto error;

M
Michael Chan 已提交
1071
	ret = cnic_init_uio(dev);
1072 1073
	if (ret)
		goto error;
1074 1075 1076 1077 1078 1079 1080 1081

	return 0;

error:
	cnic_free_resc(dev);
	return ret;
}

1082 1083 1084 1085
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;
1086
	int total_mem, blks, i;
1087

1088
	total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1089 1090 1091 1092 1093 1094 1095
	blks = total_mem / ctx_blk_size;
	if (total_mem % ctx_blk_size)
		blks++;

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

1096
	cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1097 1098 1099 1100 1101
	if (cp->ctx_arr == NULL)
		return -ENOMEM;

	cp->ctx_blks = blks;
	cp->ctx_blk_size = ctx_blk_size;
M
Michael Chan 已提交
1102
	if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1103 1104 1105 1106 1107 1108 1109 1110
		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
1111 1112 1113
			dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
					   &cp->ctx_arr[i].mapping,
					   GFP_KERNEL);
1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131
		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;
1132 1133
	struct cnic_eth_dev *ethdev = cp->ethdev;
	u32 start_cid = ethdev->starting_cid;
1134 1135 1136
	int i, j, n, ret, pages;
	struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;

1137 1138
	cp->iro_arr = ethdev->iro_arr;

1139 1140 1141 1142 1143 1144 1145 1146 1147
	cp->max_cid_space = MAX_ISCSI_TBL_SZ;
	cp->iscsi_start_cid = start_cid;
	if (start_cid < BNX2X_ISCSI_START_CID) {
		u32 delta = BNX2X_ISCSI_START_CID - start_cid;

		cp->iscsi_start_cid = BNX2X_ISCSI_START_CID;
		cp->max_cid_space += delta;
	}

1148 1149 1150 1151 1152 1153
	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) *
1154
				cp->max_cid_space, GFP_KERNEL);
1155 1156 1157 1158 1159 1160 1161 1162
	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;
	}

1163
	pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1164 1165 1166 1167 1168 1169 1170
		PAGE_SIZE;

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

	n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1171
	for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1172 1173 1174 1175 1176 1177 1178 1179 1180 1181
		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++;
	}

1182
	ret = cnic_alloc_kcq(dev, &cp->kcq1);
1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204
	if (ret)
		goto error;

	pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
			   BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
	ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
	if (ret)
		goto error;

	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
1205
	ret = cnic_alloc_uio_rings(dev, 4);
1206 1207 1208
	if (ret)
		goto error;

M
Michael Chan 已提交
1209
	ret = cnic_init_uio(dev);
1210 1211 1212 1213 1214 1215 1216 1217 1218 1219
	if (ret)
		goto error;

	return 0;

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

1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237
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) &&
1238
	    !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1239 1240 1241 1242
		spin_unlock_bh(&cp->cnic_ulp_lock);
		return -EAGAIN;
	}

1243
	clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260

	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;
}

1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282
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];
	int ret;

	kwqe.hdr.conn_and_cmd_data =
		cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1283
			     BNX2X_HW_CID(cp, cid)));
1284
	kwqe.hdr.type = cpu_to_le16(type);
1285
	kwqe.hdr.reserved1 = 0;
1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319
	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;

	return -EBUSY;
}

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;
1320 1321
	int hq_bds, pages;
	u32 pfid = cp->pfid;
1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337

	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 */
1338
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1339
		  req1->rq_num_wqes);
1340
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1341 1342
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1343
		 TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1344
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1345
		  TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1346 1347 1348 1349
		  req1->num_tasks_per_conn);

	/* init Ustorm RAM */
	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1350
		  USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1351
		  req1->rq_buffer_size);
1352
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1353 1354
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1355
		 USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1356
	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1357
		  USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1358
		  req1->num_tasks_per_conn);
1359
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1360
		  req1->rq_num_wqes);
1361
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1362
		  req1->cq_num_wqes);
1363
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1364 1365 1366
		  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

	/* init Xstorm RAM */
1367
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1368 1369
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1370
		 XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1371
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1372
		  XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1373
		  req1->num_tasks_per_conn);
1374
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1375
		  hq_bds);
1376
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1377
		  req1->num_tasks_per_conn);
1378
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1379 1380 1381
		  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

	/* init Cstorm RAM */
1382
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1383 1384
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1385
		 CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1386
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1387
		  CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1388
		  req1->num_tasks_per_conn);
1389
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1390
		  req1->cq_num_wqes);
1391
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1392 1393 1394 1395 1396 1397 1398 1399 1400
		  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;
1401
	u32 pfid = cp->pfid;
1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412
	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 +
1413
		TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1414
	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1415
		TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1416 1417 1418
		req2->error_bit_map[1]);

	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1419
		  USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1420
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
1421
		USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1422
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
1423
		USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1424 1425 1426
		req2->error_bit_map[1]);

	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1427
		  CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534

	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);
	}
	cnic_free_id(&cp->cid_tbl, ctx->cid);
	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;

	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;
1535
	u32 hw_cid = BNX2X_HW_CID(cp, cid);
1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 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
	struct iscsi_context *ictx;
	struct regpair context_addr;
	int i, j, n = 2, n_max;

	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;

	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;
1601 1602
	ictx->tstorm_st_context.tcp.ooo_support_mode =
		TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1603

1604
	ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1605 1606

	ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1607
		req2->rq_page_table_addr_lo;
1608
	ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1609
		req2->rq_page_table_addr_hi;
1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 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 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702
	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;
1703
	struct cnic_context *ctx;
1704 1705 1706
	struct iscsi_kcqe kcqe;
	struct kcqe *cqes[1];
	u32 l5_cid;
1707
	int ret = 0;
1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719

	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;
	}
1720
	*work = 2 + req2->num_additional_wqes;
1721 1722 1723 1724 1725 1726 1727 1728 1729 1730

	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;

1731 1732 1733 1734 1735 1736 1737
	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;
	}

1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755
	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;
1756
	kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
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

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


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;
}

1789
static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1790 1791 1792
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1793 1794
	union l5cm_specific_data l5_data;
	int ret;
1795
	u32 hw_cid, type;
1796 1797 1798 1799

	init_waitqueue_head(&ctx->waitq);
	ctx->wait_cond = 0;
	memset(&l5_data, 0, sizeof(l5_data));
1800 1801 1802 1803 1804 1805 1806 1807 1808
	hw_cid = BNX2X_HW_CID(cp, ctx->cid);
	type = (NONE_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
		& SPE_HDR_CONN_TYPE;
	type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
		 SPE_HDR_FUNCTION_ID);

	ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
				  hw_cid, type, &l5_data);

1809 1810 1811
	if (ret == 0)
		wait_event(ctx->waitq, ctx->wait_cond);

1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828
	return ret;
}

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;

1829 1830 1831 1832 1833 1834 1835 1836 1837 1838
	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;
	}
1839 1840 1841

	ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);

1842 1843 1844 1845
skip_cfc_delete:
	cnic_free_bnx2x_conn_resc(dev, l5_cid);

	atomic_dec(&cp->iscsi_conn);
1846
	clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1847

1848
destroy_reply:
1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 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 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912
	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);

	return ret;
}

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->rcv_buf = kwqe3->rcv_buf;
	tstorm_buf->snd_buf = kwqe3->snd_buf;
	tstorm_buf->max_rt_time = 0xffffffff;
}

static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
1913
	u32 pfid = cp->pfid;
1914 1915 1916
	u8 *mac = dev->mac_addr;

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1917
		 XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
1918
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1919
		 XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
1920
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1921
		 XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
1922
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1923
		 XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
1924
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1925
		 XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
1926
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1927
		 XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
1928 1929

	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1930
		 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
1931
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1932
		 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1933 1934
		 mac[4]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1935
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
1936
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1937
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1938 1939
		 mac[2]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1940
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 2,
1941 1942
		 mac[1]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1943
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 3,
1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958
		 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 +
1959
		 XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
1960 1961

	CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1962
		  TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
1963 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
}

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) {
1996
		netdev_err(dev->netdev, "conn_buf size too big\n");
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036
		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 +
2037
		  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2038 2039 2040 2041 2042 2043 2044

	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)
2045
		set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 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 2098 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 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155

	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;
}

static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
				   u32 num_wqes)
{
	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;
2156 2157
			netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
				   opcode);
2158 2159 2160
			break;
		}
		if (ret < 0)
2161 2162
			netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
				   opcode);
2163 2164 2165 2166 2167
		i += work;
	}
	return 0;
}

2168 2169 2170
static void service_kcqes(struct cnic_dev *dev, int num_cqes)
{
	struct cnic_local *cp = dev->cnic_priv;
2171
	int i, j, comp = 0;
2172 2173 2174 2175 2176 2177 2178 2179 2180 2181

	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;
		u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;

		if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2182
			comp++;
2183 2184 2185 2186 2187 2188 2189 2190

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

			if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
				break;

			if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2191
				comp++;
2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203
			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;
		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 {
2204 2205
			netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
				   kcqe_op_flag);
2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220
			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;
	}
2221 2222
	if (unlikely(comp))
		cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2223 2224
}

2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235
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)
2236
{
2237 2238 2239 2240 2241
	idx++;
	if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
		idx++;

	return idx;
2242 2243
}

2244
static u16 cnic_bnx2x_hw_idx(u16 idx)
2245
{
2246 2247
	if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
		idx++;
2248 2249 2250
	return idx;
}

M
Michael Chan 已提交
2251
static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2252 2253
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
2254
	u16 i, ri, hw_prod, last;
2255 2256 2257
	struct kcqe *kcqe;
	int kcqe_cnt = 0, last_cnt = 0;

M
Michael Chan 已提交
2258
	i = ri = last = info->sw_prod_idx;
2259
	ri &= MAX_KCQ_IDX;
M
Michael Chan 已提交
2260 2261
	hw_prod = *info->hw_prod_idx_ptr;
	hw_prod = cp->hw_idx(hw_prod);
2262 2263

	while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
M
Michael Chan 已提交
2264
		kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2265 2266 2267 2268 2269 2270 2271 2272 2273
		cp->completed_kcq[kcqe_cnt++] = kcqe;
		i = cp->next_idx(i);
		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
2274
	info->sw_prod_idx = last;
2275 2276 2277
	return last_cnt;
}

2278 2279 2280
static int cnic_l2_completion(struct cnic_local *cp)
{
	u16 hw_cons, sw_cons;
M
Michael Chan 已提交
2281
	struct cnic_uio_dev *udev = cp->udev;
2282
	union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
M
Michael Chan 已提交
2283
					(udev->l2_ring + (2 * BCM_PAGE_SIZE));
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
	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
2312
static void cnic_chk_pkt_rings(struct cnic_local *cp)
2313
{
M
Michael Chan 已提交
2314
	u16 rx_cons, tx_cons;
2315
	int comp = 0;
2316

M
Michael Chan 已提交
2317
	if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2318 2319
		return;

M
Michael Chan 已提交
2320 2321
	rx_cons = *cp->rx_cons_ptr;
	tx_cons = *cp->tx_cons_ptr;
2322
	if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2323 2324 2325
		if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
			comp = cnic_l2_completion(cp);

2326 2327
		cp->tx_cons = tx_cons;
		cp->rx_cons = rx_cons;
2328

M
Michael Chan 已提交
2329 2330
		if (cp->udev)
			uio_event_notify(&cp->udev->cnic_uinfo);
2331
	}
2332 2333
	if (comp)
		clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2334 2335
}

2336
static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2337 2338
{
	struct cnic_local *cp = dev->cnic_priv;
2339
	u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2340 2341 2342 2343
	int kcqe_cnt;

	cp->kwq_con_idx = *cp->kwq_con_idx_ptr;

M
Michael Chan 已提交
2344
	while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2345 2346 2347 2348 2349

		service_kcqes(dev, kcqe_cnt);

		/* Tell compiler that status_blk fields can change. */
		barrier();
M
Michael Chan 已提交
2350
		if (status_idx != *cp->kcq1.status_idx_ptr) {
2351
			status_idx = (u16) *cp->kcq1.status_idx_ptr;
2352 2353 2354 2355 2356
			cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
		} else
			break;
	}

M
Michael Chan 已提交
2357
	CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2358

M
Michael Chan 已提交
2359
	cnic_chk_pkt_rings(cp);
2360

2361 2362 2363
	return status_idx;
}

2364
static int cnic_service_bnx2(void *data, void *status_blk)
2365
{
2366
	struct cnic_dev *dev = data;
2367

2368 2369 2370 2371 2372
	if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
		struct status_block *sblk = status_blk;

		return sblk->status_idx;
	}
2373

2374 2375
	return cnic_service_bnx2_queues(dev);
}
2376

2377 2378 2379 2380
static void cnic_service_bnx2_msix(unsigned long data)
{
	struct cnic_dev *dev = (struct cnic_dev *) data;
	struct cnic_local *cp = dev->cnic_priv;
2381

2382
	cp->last_status_idx = cnic_service_bnx2_queues(dev);
2383 2384 2385 2386 2387

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

2388 2389 2390 2391 2392
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))) {
2393 2394
		u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;

2395
		prefetch(cp->status_blk.gen);
2396
		prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2397 2398 2399 2400 2401

		tasklet_schedule(&cp->cnic_irq_task);
	}
}

2402 2403 2404 2405 2406 2407 2408 2409
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);

2410
	cnic_doirq(dev);
2411 2412 2413 2414

	return IRQ_HANDLED;
}

2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432
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
2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448
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);
}

2449 2450 2451 2452
static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

2453
	cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
2454 2455 2456
			   IGU_INT_DISABLE, 0);
}

M
Michael Chan 已提交
2457 2458 2459 2460 2461 2462 2463 2464
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);
}

2465
static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
2466
{
2467
	u32 last_status = *info->status_idx_ptr;
2468 2469
	int kcqe_cnt;

2470
	while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
2471 2472 2473 2474 2475

		service_kcqes(dev, kcqe_cnt);

		/* Tell compiler that sblk fields can change. */
		barrier();
2476
		if (last_status == *info->status_idx_ptr)
2477 2478
			break;

2479
		last_status = *info->status_idx_ptr;
2480
	}
2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493
	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;
	u32 status_idx;

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

	status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
2494

M
Michael Chan 已提交
2495
	CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
M
Michael Chan 已提交
2496 2497 2498 2499 2500 2501
	if (BNX2X_CHIP_IS_E2(cp->chip_id))
		cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
				status_idx, IGU_INT_ENABLE, 1);
	else
		cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
				   status_idx, IGU_INT_ENABLE, 1);
2502 2503 2504 2505 2506 2507 2508
}

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

2509 2510
	if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
		cnic_doirq(dev);
2511

2512
	cnic_chk_pkt_rings(cp);
2513 2514 2515 2516

	return 0;
}

2517 2518 2519 2520 2521
static void cnic_ulp_stop(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int if_type;

M
Michael Chan 已提交
2522
	cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2523

2524 2525 2526
	for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
		struct cnic_ulp_ops *ulp_ops;

2527 2528 2529 2530
		mutex_lock(&cnic_lock);
		ulp_ops = cp->ulp_ops[if_type];
		if (!ulp_ops) {
			mutex_unlock(&cnic_lock);
2531
			continue;
2532 2533 2534
		}
		set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
		mutex_unlock(&cnic_lock);
2535 2536 2537

		if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
			ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2538 2539

		clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550
	}
}

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;

2551 2552 2553 2554
		mutex_lock(&cnic_lock);
		ulp_ops = cp->ulp_ops[if_type];
		if (!ulp_ops || !ulp_ops->cnic_start) {
			mutex_unlock(&cnic_lock);
2555
			continue;
2556 2557 2558
		}
		set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
		mutex_unlock(&cnic_lock);
2559 2560 2561

		if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
			ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2562 2563

		clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587
	}
}

static int cnic_ctl(void *data, struct cnic_ctl_info *info)
{
	struct cnic_dev *dev = data;

	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;
2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600
	case CNIC_CTL_COMPLETION_CMD: {
		u32 cid = BNX2X_SW_CID(info->data.comp.cid);
		u32 l5_cid;
		struct cnic_local *cp = dev->cnic_priv;

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

			ctx->wait_cond = 1;
			wake_up(&ctx->waitq);
		}
		break;
	}
2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614
	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;

2615 2616 2617 2618
		mutex_lock(&cnic_lock);
		ulp_ops = cnic_ulp_tbl[i];
		if (!ulp_ops || !ulp_ops->cnic_init) {
			mutex_unlock(&cnic_lock);
2619
			continue;
2620 2621 2622
		}
		ulp_get(ulp_ops);
		mutex_unlock(&cnic_lock);
2623 2624 2625 2626

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

2627
		ulp_put(ulp_ops);
2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638
	}
}

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;

2639 2640 2641 2642
		mutex_lock(&cnic_lock);
		ulp_ops = cnic_ulp_tbl[i];
		if (!ulp_ops || !ulp_ops->cnic_exit) {
			mutex_unlock(&cnic_lock);
2643
			continue;
2644 2645 2646
		}
		ulp_get(ulp_ops);
		mutex_unlock(&cnic_lock);
2647 2648 2649 2650

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

2651
		ulp_put(ulp_ops);
2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684
	}
}

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;
2685
	l4kwqe->ipid_start = DEF_IPID_START;
2686 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 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 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 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869
	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;

2870 2871 2872 2873 2874 2875 2876
	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;
	}

2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909
	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;

2910
		cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954
		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)
{
2955
#if defined(CONFIG_INET)
2956 2957 2958 2959 2960 2961 2962 2963 2964
	struct flowi fl;
	int err;
	struct rtable *rt;

	memset(&fl, 0, sizeof(fl));
	fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;

	err = ip_route_output_key(&init_net, &rt, &fl);
	if (!err)
2965
		*dst = &rt->dst;
2966
	return err;
2967 2968 2969
#else
	return -ENETUNREACH;
#endif
2970 2971 2972 2973 2974
}

static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
			     struct dst_entry **dst)
{
2975
#if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037
	struct flowi fl;

	memset(&fl, 0, sizeof(fl));
	ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
	if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
		fl.oif = dst_addr->sin6_scope_id;

	*dst = ip6_route_output(&init_net, NULL, &fl);
	if (*dst)
		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;
3038 3039
	int is_v6, rc = 0;
	struct dst_entry *dst = NULL;
3040
	struct net_device *realdev;
3041 3042
	__be16 local_port;
	u32 port_id;
3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056

	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);
3057
		cnic_get_v6_route(&saddr->remote.v6, &dst);
3058 3059 3060 3061 3062 3063 3064

		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 {
3065
		cnic_get_v4_route(&saddr->remote.v4, &dst);
3066 3067 3068 3069 3070 3071

		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;
	}

3072 3073 3074 3075 3076 3077 3078 3079 3080
	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);
		}
	}
3081

3082 3083 3084 3085 3086
	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;
3087
	} else
3088
		port_id = 0;
3089

3090 3091 3092
	if (!port_id) {
		port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
		if (port_id == -1) {
3093 3094 3095
			rc = -ENOMEM;
			goto err_out;
		}
3096
		local_port = cpu_to_be16(port_id);
3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139
	}
	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)
{
	int err = 0;

	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;
3140
	u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152

	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);
3153 3154
	if (csk->state != opcode)
		return -EALREADY;
3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166

	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);
3167 3168
	} else {
		return -EALREADY;
3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221
	}
	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;
	}
3222 3223 3224 3225 3226 3227 3228 3229
	/* 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;
	}

3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266
	csk->pg_cid = kcqe->pg_cid;
	set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
	cnic_cm_conn_req(csk);

done:
	csk_put(csk);
}

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;

	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) {
3267 3268 3269 3270 3271 3272 3273
	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;
3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285
	case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
		if (l4kcqe->status == 0)
			set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);

		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:
3286 3287
	case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
	case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 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 3337 3338
		cp->close_conn(csk, opcode);
		break;

	case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
		cnic_cm_upcall(cp, csk, opcode);
		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;

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

	if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
			     CNIC_LOCAL_PORT_MIN)) {
		cnic_cm_free_mem(dev);
		return -ENOMEM;
	}
	return 0;
}

static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
{
3339 3340 3341 3342
	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;
3343
	}
3344 3345 3346

	/* 1. If event opcode matches the expected event in csk->state
	 * 2. If the expected event is CLOSE_COMP, we accept any event
3347 3348
	 * 3. If the expected event is 0, meaning the connection was never
	 *    never established, we accept the opcode from cm_abort.
3349
	 */
3350 3351 3352 3353 3354
	if (opcode == csk->state || csk->state == 0 ||
	    csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) {
		if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
			if (csk->state == 0)
				csk->state = opcode;
3355
			return 1;
3356
		}
3357
	}
3358 3359 3360 3361 3362 3363 3364 3365
	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;

3366 3367 3368 3369 3370
	if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
		cnic_cm_upcall(cp, csk, opcode);
		return;
	}

3371
	clear_bit(SK_F_CONNECT_START, &csk->flags);
3372
	cnic_close_conn(csk);
3373
	csk->state = opcode;
3374
	cnic_cm_upcall(cp, csk, opcode);
3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389
}

static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
{
}

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

	get_random_bytes(&seed, 4);
	cnic_ctx_wr(dev, 45, 0, seed);
	return 0;
}

3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402
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:
3403 3404 3405 3406 3407 3408
		if (cnic_ready_to_close(csk, opcode)) {
			if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
				cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
			else
				close_complete = 1;
		}
3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430
		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)
{
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
	struct cnic_local *cp = dev->cnic_priv;
	int i;

	if (!cp->ctx_tbl)
		return;

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

	for (i = 0; i < cp->max_cid_space; i++) {
		struct cnic_context *ctx = &cp->ctx_tbl[i];

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

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

	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));
3457 3458 3459 3460 3461
}

static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
3462
	u32 pfid = cp->pfid;
3463
	u32 port = CNIC_PORT(cp);
3464 3465 3466 3467 3468

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

	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3469
		  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
3470 3471

	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3472
		XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
3473
	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3474
		XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
3475 3476 3477
		DEF_MAX_DA_COUNT);

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3478
		 XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
3479
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3480
		 XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
3481
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3482
		 XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
3483
	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3484
		XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
3485

3486
	CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
3487 3488 3489 3490
		DEF_MAX_CWND);
	return 0;
}

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 3522 3523 3524 3525 3526 3527 3528 3529 3530
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;

	for (i = 0; i < cp->max_cid_space; i++) {
		struct cnic_context *ctx = &cp->ctx_tbl[i];

		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;

		cnic_bnx2x_destroy_ramrod(dev, i);

		cnic_free_bnx2x_conn_resc(dev, i);
		if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
			atomic_dec(&cp->iscsi_conn);

		clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
	}

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

}

3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544
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;

3545 3546
	INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);

3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 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 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638
	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;

	cp->stop_cm(dev);

	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
3639
		tasklet_kill(&cp->cnic_irq_task);
3640 3641 3642 3643
		free_irq(ethdev->irq_arr[0].vector, dev);
	}
}

M
Michael Chan 已提交
3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656
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;
}

3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673
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);

3674
		cp->last_status_idx = cp->status_blk.bnx2->status_idx;
3675
		tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
3676
			     (unsigned long) dev);
M
Michael Chan 已提交
3677 3678
		err = cnic_request_irq(dev);
		if (err)
3679
			return err;
M
Michael Chan 已提交
3680

3681
		while (cp->status_blk.bnx2->status_completion_producer_index &&
3682 3683 3684 3685 3686 3687 3688
		       i < 10) {
			CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
				1 << (11 + sblk_num));
			udelay(10);
			i++;
			barrier();
		}
3689
		if (cp->status_blk.bnx2->status_completion_producer_index) {
3690 3691 3692 3693 3694
			cnic_free_irq(dev);
			goto failed;
		}

	} else {
3695
		struct status_block *sblk = cp->status_blk.gen;
3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712
		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:
3713
	netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746
	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
3747
	struct cnic_uio_dev *udev = cp->udev;
3748 3749 3750 3751
	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
3752
	dma_addr_t buf_map, ring_map = udev->l2_ring_map;
3753
	struct status_block *s_blk = cp->status_blk.gen;
3754 3755 3756 3757 3758

	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) {
3759
		struct status_block_msix *sblk = cp->status_blk.bnx2;
3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779

		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 {
3780 3781 3782
		cnic_init_context(dev, tx_cid);
		cnic_init_context(dev, tx_cid + 1);

3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793
		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);

M
Michael Chan 已提交
3794
	txbd = (struct tx_bd *) udev->l2_ring;
3795

M
Michael Chan 已提交
3796
	buf_map = udev->l2_buf_map;
3797 3798 3799 3800
	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
3801
	val = (u64) ring_map >> 32;
3802 3803 3804
	cnic_ctx_wr(dev, cid_addr, offset2, val);
	txbd->tx_bd_haddr_hi = val;

M
Michael Chan 已提交
3805
	val = (u64) ring_map & 0xffffffff;
3806 3807 3808 3809 3810 3811 3812 3813
	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
3814
	struct cnic_uio_dev *udev = cp->udev;
3815 3816 3817
	u32 cid_addr, sb_id, val, coal_reg, coal_val;
	int i;
	struct rx_bd *rxbd;
3818
	struct status_block *s_blk = cp->status_blk.gen;
M
Michael Chan 已提交
3819
	dma_addr_t ring_map = udev->l2_ring_map;
3820 3821 3822 3823 3824 3825 3826

	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) {
3827
		struct status_block_msix *sblk = cp->status_blk.bnx2;
3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847

		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)
3848
		val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
3849
	else
3850
		val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
3851 3852
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);

M
Michael Chan 已提交
3853
	rxbd = (struct rx_bd *) (udev->l2_ring + BCM_PAGE_SIZE);
3854 3855 3856 3857
	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
3858
		buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
3859 3860 3861 3862 3863
		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
3864
	val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
3865 3866 3867
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
	rxbd->rx_bd_haddr_hi = val;

M
Michael Chan 已提交
3868
	val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925
	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;
	l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) |
			      (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;
3926
	struct status_block *sblk = cp->status_blk.gen;
3927
	u32 val, kcq_cid_addr, kwq_cid_addr;
3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951
	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);

3952
	kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
3953 3954 3955 3956 3957
	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;
3958
	set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
3959 3960 3961 3962 3963 3964 3965 3966 3967

	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;
3968
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
3969 3970

	val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
3971
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3972 3973

	val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
3974
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3975 3976

	val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
3977
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3978 3979

	val = (u32) cp->kwq_info.pgtbl_map;
3980 3981 3982 3983
	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;
3984

3985 3986 3987
	cp->kcq1.sw_prod_idx = 0;
	cp->kcq1.hw_prod_idx_ptr =
		(u16 *) &sblk->status_completion_producer_index;
3988

3989
	cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
3990 3991 3992 3993

	/* Initialize the kernel complete queue context. */
	val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
	      (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3994
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
3995 3996

	val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
3997
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3998 3999

	val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4000
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4001

4002 4003
	val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4004

4005 4006
	val = (u32) cp->kcq1.dma.pgtbl_map;
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4007 4008 4009

	cp->int_num = 0;
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4010
		struct status_block_msix *msblk = cp->status_blk.bnx2;
4011
		u32 sb_id = cp->status_blk_num;
4012
		u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4013

4014 4015 4016
		cp->kcq1.hw_prod_idx_ptr =
			(u16 *) &msblk->status_completion_producer_index;
		cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
4017
		cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
4018
		cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4019 4020
		cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
		cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046
	}

	/* 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) {
4047
		netdev_err(dev->netdev, "cnic_init_irq failed\n");
4048 4049 4050 4051 4052 4053 4054 4055
		cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
		cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
		return err;
	}

	return 0;
}

4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082
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;

4083
	tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4084
		     (unsigned long) dev);
M
Michael Chan 已提交
4085 4086 4087
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
		err = cnic_request_irq(dev);

4088 4089 4090
	return err;
}

4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108
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);
}

4109 4110 4111 4112 4113 4114
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 +
4115 4116 4117 4118 4119
			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 +
			offsetof(struct hc_index_data, timeout), 64 / 12);
	cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4120 4121 4122 4123 4124 4125
}

static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
{
}

4126 4127
static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
				    struct client_init_ramrod_data *data)
4128 4129
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4130 4131 4132
	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;
4133
	struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4134 4135
	int port = CNIC_PORT(cp);
	int i;
4136
	u32 cli = cp->ethdev->iscsi_l2_client_id;
4137 4138 4139 4140
	u32 val;

	memset(txbd, 0, BCM_PAGE_SIZE);

M
Michael Chan 已提交
4141
	buf_map = udev->l2_buf_map;
4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158
	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);

	}

4159
	val = (u64) ring_map >> 32;
4160 4161
	txbd->next_bd.addr_hi = cpu_to_le32(val);

4162
	data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4163

4164
	val = (u64) ring_map & 0xffffffff;
4165 4166
	txbd->next_bd.addr_lo = cpu_to_le32(val);

4167
	data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4168

4169 4170 4171
	/* 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;
4172 4173

	/* reset xstorm per client statistics */
4174
	if (cli < MAX_STAT_COUNTER_ID) {
4175 4176 4177 4178 4179
		val = BAR_XSTRORM_INTMEM +
		      XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
		for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
			CNIC_WR(dev, val + i * 4, 0);
	}
4180 4181

	cp->tx_cons_ptr =
4182
		&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4183 4184
}

4185 4186
static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
				    struct client_init_ramrod_data *data)
4187 4188
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4189 4190
	struct cnic_uio_dev *udev = cp->udev;
	struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4191 4192
				BCM_PAGE_SIZE);
	struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
M
Michael Chan 已提交
4193
				(udev->l2_ring + (2 * BCM_PAGE_SIZE));
4194
	struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4195 4196
	int i;
	int port = CNIC_PORT(cp);
4197
	u32 cli = cp->ethdev->iscsi_l2_client_id;
4198
	int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4199
	u32 val;
M
Michael Chan 已提交
4200
	dma_addr_t ring_map = udev->l2_ring_map;
4201 4202 4203 4204 4205 4206 4207

	/* General data */
	data->general.client_id = cli;
	data->general.statistics_en_flg = 1;
	data->general.statistics_counter_id = cli;
	data->general.activate_flg = 1;
	data->general.sp_client_id = cli;
4208 4209 4210 4211 4212

	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
4213
		buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4214 4215 4216 4217
		rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
		rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
	}

4218
	val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4219
	rxbd->addr_hi = cpu_to_le32(val);
4220
	data->rx.bd_page_base.hi = cpu_to_le32(val);
4221

4222
	val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4223
	rxbd->addr_lo = cpu_to_le32(val);
4224
	data->rx.bd_page_base.lo = cpu_to_le32(val);
4225 4226

	rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4227
	val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4228
	rxcqe->addr_hi = cpu_to_le32(val);
4229
	data->rx.cqe_page_base.hi = cpu_to_le32(val);
4230

4231
	val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4232
	rxcqe->addr_lo = cpu_to_le32(val);
4233
	data->rx.cqe_page_base.lo = cpu_to_le32(val);
4234

4235 4236 4237 4238
	/* 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;
4239

4240 4241
	data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
	data->rx.bd_buff_size =	cpu_to_le16(cp->l2_single_buf_size);
4242

4243 4244
	data->rx.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
	data->rx.outer_vlan_removal_enable_flg = 1;
4245

4246 4247
	/* reset tstorm and ustorm per client statistics */
	if (cli < MAX_STAT_COUNTER_ID) {
4248 4249 4250 4251
		val = BAR_TSTRORM_INTMEM +
		      TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
		for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
			CNIC_WR(dev, val + i * 4, 0);
4252

4253 4254 4255 4256 4257
		val = BAR_USTRORM_INTMEM +
		      USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
		for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
			CNIC_WR(dev, val + i * 4, 0);
	}
4258 4259

	cp->rx_cons_ptr =
4260
		&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4261
	cp->rx_cons = *cp->rx_cons_ptr;
4262 4263
}

M
Michael Chan 已提交
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
static int cnic_read_bnx2x_iscsi_mac(struct cnic_dev *dev, u32 upper_addr,
				     u32 lower_addr)
{
	u32 val;
	u8 mac[6];

	val = CNIC_RD(dev, upper_addr);

	mac[0] = (u8) (val >> 8);
	mac[1] = (u8) val;

	val = CNIC_RD(dev, lower_addr);

	mac[2] = (u8) (val >> 24);
	mac[3] = (u8) (val >> 16);
	mac[4] = (u8) (val >> 8);
	mac[5] = (u8) val;

	if (is_valid_ether_addr(mac)) {
		memcpy(dev->mac_addr, mac, 6);
		return 0;
	} else {
		return -EINVAL;
	}
}

4290 4291 4292
static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4293
	u32 base, base2, addr, addr1, val;
4294 4295 4296 4297
	int port = CNIC_PORT(cp);

	dev->max_iscsi_conn = 0;
	base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
4298
	if (base == 0)
4299 4300
		return;

M
Michael Chan 已提交
4301 4302
	base2 = CNIC_RD(dev, (CNIC_PATH(cp) ? MISC_REG_GENERIC_CR_1 :
					      MISC_REG_GENERIC_CR_0));
M
Michael Chan 已提交
4303
	addr = BNX2X_SHMEM_ADDR(base,
4304 4305
		dev_info.port_hw_config[port].iscsi_mac_upper);

M
Michael Chan 已提交
4306
	addr1 = BNX2X_SHMEM_ADDR(base,
4307 4308
		dev_info.port_hw_config[port].iscsi_mac_lower);

M
Michael Chan 已提交
4309
	cnic_read_bnx2x_iscsi_mac(dev, addr, addr1);
4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324

	addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
	val = CNIC_RD(dev, addr);

	if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
		u16 val16;

		addr = BNX2X_SHMEM_ADDR(base,
				drv_lic_key[port].max_iscsi_init_conn);
		val16 = CNIC_RD16(dev, addr);

		if (val16)
			val16 ^= 0x1e1e;
		dev->max_iscsi_conn = val16;
	}
M
Michael Chan 已提交
4325
	if (BNX2X_CHIP_IS_E1H(cp->chip_id) || BNX2X_CHIP_IS_E2(cp->chip_id)) {
4326
		int func = CNIC_FUNC(cp);
4327 4328
		u32 mf_cfg_addr;

M
Michael Chan 已提交
4329 4330 4331 4332 4333
		if (BNX2X_SHMEM2_HAS(base2, mf_cfg_addr))
			mf_cfg_addr = CNIC_RD(dev, BNX2X_SHMEM2_ADDR(base2,
					      mf_cfg_addr));
		else
			mf_cfg_addr = base + BNX2X_SHMEM_MF_BLK_OFFSET;
4334

M
Michael Chan 已提交
4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367
		if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
			/* Must determine if the MF is SD vs SI mode */
			addr = BNX2X_SHMEM_ADDR(base,
					dev_info.shared_feature_config.config);
			val = CNIC_RD(dev, addr);
			if ((val & SHARED_FEAT_CFG_FORCE_SF_MODE_MASK) ==
			    SHARED_FEAT_CFG_FORCE_SF_MODE_SWITCH_INDEPT) {
				int rc;

				/* MULTI_FUNCTION_SI mode */
				addr = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
					func_ext_config[func].func_cfg);
				val = CNIC_RD(dev, addr);
				if (!(val & MACP_FUNC_CFG_FLAGS_ISCSI_OFFLOAD))
					dev->max_iscsi_conn = 0;

				addr = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
					func_ext_config[func].
					iscsi_mac_addr_upper);
				addr1 = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
					func_ext_config[func].
					iscsi_mac_addr_lower);
				rc = cnic_read_bnx2x_iscsi_mac(dev, addr,
								addr1);
				if (rc && func > 1)
					dev->max_iscsi_conn = 0;

				return;
			}
		}

		addr = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
			func_mf_config[func].e1hov_tag);
4368 4369 4370 4371

		val = CNIC_RD(dev, addr);
		val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
		if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
M
Michael Chan 已提交
4372 4373
			addr = BNX2X_MF_CFG_ADDR(mf_cfg_addr,
				func_mf_config[func].config);
4374 4375 4376 4377 4378 4379
			val = CNIC_RD(dev, addr);
			val &= FUNC_MF_CFG_PROTOCOL_MASK;
			if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
				dev->max_iscsi_conn = 0;
		}
	}
M
Michael Chan 已提交
4380 4381
	if (!is_valid_ether_addr(dev->mac_addr))
		dev->max_iscsi_conn = 0;
4382 4383 4384 4385 4386
}

static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
4387
	struct cnic_eth_dev *ethdev = cp->ethdev;
4388
	int func = CNIC_FUNC(cp), ret, i;
4389
	u32 pfid;
4390

M
Michael Chan 已提交
4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405
	if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
		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;

		if (val)
			cp->pfid = func >> 1;
		else
			cp->pfid = func & 0x6;
	} else {
		cp->pfid = func;
	}
4406 4407
	pfid = cp->pfid;

4408
	ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4409
			       cp->iscsi_start_cid);
4410 4411 4412 4413

	if (ret)
		return -ENOMEM;

4414 4415
	cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;

4416
	cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4417
			  CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4418 4419
	cp->kcq1.sw_prod_idx = 0;

M
Michael Chan 已提交
4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434
	if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
		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];
	}
4435 4436 4437 4438

	cnic_get_bnx2x_iscsi_info(dev);

	/* Only 1 EQ */
4439
	CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
4440
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4441
		CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
4442
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4443
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
4444
		cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
4445
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4446
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
4447
		(u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
4448
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4449
		CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
4450
		cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
4451
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4452
		CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
4453
		(u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
4454
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4455
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
4456
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4457
		CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
4458
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4459
		CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
4460
		HC_INDEX_ISCSI_EQ_CONS);
4461 4462 4463

	for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
		CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4464
			TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i),
4465 4466
			cp->conn_buf_info.pgtbl[2 * i]);
		CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4467
			TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i) + 4,
4468 4469 4470 4471
			cp->conn_buf_info.pgtbl[(2 * i) + 1]);
	}

	CNIC_WR(dev, BAR_USTRORM_INTMEM +
4472
		USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
4473 4474
		cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
4475
		USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
4476 4477
		(u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);

4478 4479 4480
	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
		TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);

4481 4482 4483 4484 4485 4486 4487 4488 4489
	cnic_setup_bnx2x_context(dev);

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

	return 0;
}

M
Michael Chan 已提交
4490 4491
static void cnic_init_rings(struct cnic_dev *dev)
{
M
Michael Chan 已提交
4492
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4493
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
4494 4495 4496 4497

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

M
Michael Chan 已提交
4498 4499 4500
	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
4501
		set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4502
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4503 4504
		u32 cli = cp->ethdev->iscsi_l2_client_id;
		u32 cid = cp->ethdev->iscsi_l2_cid;
4505 4506
		u32 cl_qzone_id, type;
		struct client_init_ramrod_data *data;
4507 4508
		union l5cm_specific_data l5_data;
		struct ustorm_eth_rx_producers rx_prods = {0};
4509
		u32 off, i;
4510 4511 4512 4513 4514

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

4515 4516
		cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);

4517
		off = BAR_USTRORM_INTMEM +
M
Michael Chan 已提交
4518 4519 4520
			(BNX2X_CHIP_IS_E2(cp->chip_id) ?
			 USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
			 USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
4521 4522

		for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4523
			CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4524

4525 4526
		set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

M
Michael Chan 已提交
4527
		data = udev->l2_buf;
4528 4529 4530 4531 4532 4533

		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
4534 4535
		l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
		l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
4536 4537 4538 4539 4540

		type = (ETH_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
			& SPE_HDR_CONN_TYPE;
		type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
			SPE_HDR_FUNCTION_ID);
4541

M
Michael Chan 已提交
4542 4543
		set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);

4544
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4545
			cid, type, &l5_data);
4546

4547 4548 4549 4550 4551 4552 4553 4554
		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");
4555
		cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4556
		cnic_ring_ctl(dev, cid, cli, 1);
M
Michael Chan 已提交
4557 4558 4559 4560 4561
	}
}

static void cnic_shutdown_rings(struct cnic_dev *dev)
{
M
Michael Chan 已提交
4562 4563 4564 4565 4566
	struct cnic_local *cp = dev->cnic_priv;

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

M
Michael Chan 已提交
4567 4568
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
		cnic_shutdown_bnx2_rx_ring(dev);
4569 4570
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
		struct cnic_local *cp = dev->cnic_priv;
4571 4572
		u32 cli = cp->ethdev->iscsi_l2_client_id;
		u32 cid = cp->ethdev->iscsi_l2_cid;
M
Michael Chan 已提交
4573
		union l5cm_specific_data l5_data;
4574
		int i;
4575
		u32 type;
4576

4577
		cnic_ring_ctl(dev, cid, cli, 0);
M
Michael Chan 已提交
4578

4579 4580
		set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

M
Michael Chan 已提交
4581 4582 4583
		l5_data.phy_address.lo = cli;
		l5_data.phy_address.hi = 0;
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4584
			cid, ETH_CONNECTION_TYPE, &l5_data);
4585 4586 4587 4588 4589 4590 4591 4592
		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");
4593
		cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4594 4595

		memset(&l5_data, 0, sizeof(l5_data));
4596 4597 4598 4599 4600
		type = (NONE_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
			& SPE_HDR_CONN_TYPE;
		type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
			 SPE_HDR_FUNCTION_ID);
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
4601
			cid, type, &l5_data);
4602
		msleep(10);
M
Michael Chan 已提交
4603
	}
M
Michael Chan 已提交
4604
	clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
M
Michael Chan 已提交
4605 4606
}

4607
static int cnic_register_netdev(struct cnic_dev *dev)
4608 4609 4610 4611 4612
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int err;

4613 4614 4615 4616 4617
	if (!ethdev)
		return -ENODEV;

	if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
		return 0;
4618 4619

	err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4620
	if (err)
4621
		netdev_err(dev->netdev, "register_cnic failed\n");
4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644

	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;
4645 4646 4647 4648

	dev->regview = ethdev->io_base;
	pci_dev_get(dev->pcidev);
	cp->func = PCI_FUNC(dev->pcidev->devfn);
4649
	cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
4650 4651 4652 4653
	cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;

	err = cp->alloc_resc(dev);
	if (err) {
4654
		netdev_err(dev->netdev, "allocate resource failure\n");
4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693
		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);
}

4694 4695 4696 4697 4698 4699

static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

	cnic_free_irq(dev);
4700
	*cp->kcq1.hw_prod_idx_ptr = 0;
4701
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4702
		CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
4703
	CNIC_WR16(dev, cp->kcq1.io_addr, 0);
4704 4705 4706
	cnic_free_resc(dev);
}

4707 4708 4709 4710
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;
4711
		int i = 0;
4712

4713 4714 4715
		/* Need to wait for the ring shutdown event to complete
		 * before clearing the CNIC_UP flag.
		 */
M
Michael Chan 已提交
4716
		while (cp->udev->uio_dev != -1 && i < 15) {
4717 4718 4719
			msleep(100);
			i++;
		}
4720
		cnic_shutdown_rings(dev);
4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738
		clear_bit(CNIC_F_CNIC_UP, &dev->flags);
		rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
		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)
4739
		netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
4740

4741
	netdev_info(dev->netdev, "Removed CNIC device\n");
4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756
	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) {
4757
		netdev_err(dev, "allocate dev struct failure\n");
4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773
		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);

4774
	netdev_info(dev, "Added CNIC device\n");
4775 4776 4777 4778 4779 4780 4781 4782 4783 4784

	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;
4785
	struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4786

4787
	probe = symbol_get(bnx2_cnic_probe);
4788 4789
	if (probe) {
		ethdev = (*probe)(dev);
4790
		symbol_put(bnx2_cnic_probe);
4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822
	}
	if (!ethdev)
		return NULL;

	pdev = ethdev->pdev;
	if (!pdev)
		return NULL;

	dev_hold(dev);
	pci_dev_get(pdev);
	if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
	    pdev->device == PCI_DEVICE_ID_NX2_5709S) {
		u8 rev;

		pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
		if (rev < 0x10) {
			pci_dev_put(pdev);
			goto cnic_err;
		}
	}
	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
4823
	cp->chip_id = ethdev->chip_id;
4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844

	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;
	cp->next_idx = cnic_bnx2_next_idx;
	cp->hw_idx = cnic_bnx2_hw_idx;
	return cdev;

cnic_err:
	dev_put(dev);
	return NULL;
}

4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877
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
4878
	cp->chip_id = ethdev->chip_id;
4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889

	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;
M
Michael Chan 已提交
4890 4891 4892 4893
	if (BNX2X_CHIP_IS_E2(cp->chip_id))
		cp->ack_int = cnic_ack_bnx2x_e2_msix;
	else
		cp->ack_int = cnic_ack_bnx2x_msix;
4894 4895 4896 4897 4898 4899
	cp->close_conn = cnic_close_bnx2x_conn;
	cp->next_idx = cnic_bnx2x_next_idx;
	cp->hw_idx = cnic_bnx2x_hw_idx;
	return cdev;
}

4900 4901 4902 4903 4904 4905 4906 4907 4908 4909 4910
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);
4911 4912
		if (!strcmp(drvinfo.driver, "bnx2x"))
			cdev = init_bnx2x_cnic(dev);
4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949
		if (cdev) {
			write_lock(&cnic_dev_lock);
			list_add(&cdev->list, &cnic_dev_list);
			write_unlock(&cnic_dev_lock);
		}
	}
	return cdev;
}

/**
 * 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 if_type;
	int new_dev = 0;

	dev = cnic_from_netdev(netdev);

	if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
		/* 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);
4950 4951

		if (event == NETDEV_UP) {
4952 4953 4954 4955
			if (cnic_register_netdev(dev) != 0) {
				cnic_put(dev);
				goto done;
			}
4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977
			if (!cnic_start_hw(dev))
				cnic_ulp_start(dev);
		}

		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);
		}
		rcu_read_unlock();

		if (event == NETDEV_GOING_DOWN) {
			cnic_ulp_stop(dev);
			cnic_stop_hw(dev);
4978
			cnic_unregister_netdev(dev);
4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000
		} 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);
	}
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;
5001
	struct cnic_uio_dev *udev;
5002 5003 5004 5005 5006 5007 5008 5009 5010

	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);
5011
		cnic_unregister_netdev(dev);
5012 5013 5014
		list_del_init(&dev->list);
		cnic_free_dev(dev);
	}
5015 5016 5017 5018 5019
	while (!list_empty(&cnic_udev_list)) {
		udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
				  list);
		cnic_free_uio(udev);
	}
5020 5021 5022 5023 5024 5025
}

static int __init cnic_init(void)
{
	int rc = 0;

5026
	pr_info("%s", version);
5027 5028 5029 5030 5031 5032 5033

	rc = register_netdevice_notifier(&cnic_netdev_notifier);
	if (rc) {
		cnic_release();
		return rc;
	}

5034 5035 5036 5037 5038 5039 5040
	cnic_wq = create_singlethread_workqueue("cnic_wq");
	if (!cnic_wq) {
		cnic_release();
		unregister_netdevice_notifier(&cnic_netdev_notifier);
		return -ENOMEM;
	}

5041 5042 5043 5044 5045 5046 5047
	return 0;
}

static void __exit cnic_exit(void)
{
	unregister_netdevice_notifier(&cnic_netdev_notifier);
	cnic_release();
5048
	destroy_workqueue(cnic_wq);
5049 5050 5051 5052
}

module_init(cnic_init);
module_exit(cnic_exit);