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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / cnic.c
blob8cca60e434444e2912ebb0141fb63710ffe499c1
1 /* cnic.c: Broadcom CNIC core network driver.
2 *
3 * Copyright (c) 2006-2010 Broadcom Corporation
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation.
8 *
9 * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
10 * Modified and maintained by: Michael Chan <mchan@broadcom.com>
11 */
12
13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
14
15 #include <linux/module.h>
16
17 #include <linux/kernel.h>
18 #include <linux/errno.h>
19 #include <linux/list.h>
20 #include <linux/slab.h>
21 #include <linux/pci.h>
22 #include <linux/init.h>
23 #include <linux/netdevice.h>
24 #include <linux/uio_driver.h>
25 #include <linux/in.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/delay.h>
28 #include <linux/ethtool.h>
29 #include <linux/if_vlan.h>
30 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
31 #define BCM_VLAN 1
32 #endif
33 #include <net/ip.h>
34 #include <net/tcp.h>
35 #include <net/route.h>
36 #include <net/ipv6.h>
37 #include <net/ip6_route.h>
38 #include <net/ip6_checksum.h>
39 #include <scsi/iscsi_if.h>
40
41 #include "cnic_if.h"
42 #include "bnx2.h"
43 #include "bnx2x/bnx2x_reg.h"
44 #include "bnx2x/bnx2x_fw_defs.h"
45 #include "bnx2x/bnx2x_hsi.h"
46 #include "../scsi/bnx2i/57xx_iscsi_constants.h"
47 #include "../scsi/bnx2i/57xx_iscsi_hsi.h"
48 #include "cnic.h"
49 #include "cnic_defs.h"
50
51 #define DRV_MODULE_NAME "cnic"
52
53 static char version[] __devinitdata =
54 "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
55
56 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
57 "Chen (zongxi@broadcom.com");
58 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
59 MODULE_LICENSE("GPL");
60 MODULE_VERSION(CNIC_MODULE_VERSION);
61
62 /* 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 static DEFINE_RWLOCK(cnic_dev_lock);
66 static DEFINE_MUTEX(cnic_lock);
67
68 static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
69
70 /* helper function, assuming cnic_lock is held */
71 static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
72 {
73 return rcu_dereference_protected(cnic_ulp_tbl[type],
74 lockdep_is_held(&cnic_lock));
75 }
76
77 static int cnic_service_bnx2(void *, void *);
78 static int cnic_service_bnx2x(void *, void *);
79 static int cnic_ctl(void *, struct cnic_ctl_info *);
80
81 static struct cnic_ops cnic_bnx2_ops = {
82 .cnic_owner = THIS_MODULE,
83 .cnic_handler = cnic_service_bnx2,
84 .cnic_ctl = cnic_ctl,
85 };
86
87 static struct cnic_ops cnic_bnx2x_ops = {
88 .cnic_owner = THIS_MODULE,
89 .cnic_handler = cnic_service_bnx2x,
90 .cnic_ctl = cnic_ctl,
91 };
92
93 static struct workqueue_struct *cnic_wq;
94
95 static void cnic_shutdown_rings(struct cnic_dev *);
96 static void cnic_init_rings(struct cnic_dev *);
97 static int cnic_cm_set_pg(struct cnic_sock *);
98
99 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
100 {
101 struct cnic_uio_dev *udev = uinfo->priv;
102 struct cnic_dev *dev;
103
104 if (!capable(CAP_NET_ADMIN))
105 return -EPERM;
106
107 if (udev->uio_dev != -1)
108 return -EBUSY;
109
110 rtnl_lock();
111 dev = udev->dev;
112
113 if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
114 rtnl_unlock();
115 return -ENODEV;
116 }
117
118 udev->uio_dev = iminor(inode);
119
120 cnic_shutdown_rings(dev);
121 cnic_init_rings(dev);
122 rtnl_unlock();
123
124 return 0;
125 }
126
127 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
128 {
129 struct cnic_uio_dev *udev = uinfo->priv;
130
131 udev->uio_dev = -1;
132 return 0;
133 }
134
135 static inline void cnic_hold(struct cnic_dev *dev)
136 {
137 atomic_inc(&dev->ref_count);
138 }
139
140 static inline void cnic_put(struct cnic_dev *dev)
141 {
142 atomic_dec(&dev->ref_count);
143 }
144
145 static inline void csk_hold(struct cnic_sock *csk)
146 {
147 atomic_inc(&csk->ref_count);
148 }
149
150 static inline void csk_put(struct cnic_sock *csk)
151 {
152 atomic_dec(&csk->ref_count);
153 }
154
155 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
156 {
157 struct cnic_dev *cdev;
158
159 read_lock(&cnic_dev_lock);
160 list_for_each_entry(cdev, &cnic_dev_list, list) {
161 if (netdev == cdev->netdev) {
162 cnic_hold(cdev);
163 read_unlock(&cnic_dev_lock);
164 return cdev;
165 }
166 }
167 read_unlock(&cnic_dev_lock);
168 return NULL;
169 }
170
171 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
172 {
173 atomic_inc(&ulp_ops->ref_count);
174 }
175
176 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
177 {
178 atomic_dec(&ulp_ops->ref_count);
179 }
180
181 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
182 {
183 struct cnic_local *cp = dev->cnic_priv;
184 struct cnic_eth_dev *ethdev = cp->ethdev;
185 struct drv_ctl_info info;
186 struct drv_ctl_io *io = &info.data.io;
187
188 info.cmd = DRV_CTL_CTX_WR_CMD;
189 io->cid_addr = cid_addr;
190 io->offset = off;
191 io->data = val;
192 ethdev->drv_ctl(dev->netdev, &info);
193 }
194
195 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
196 {
197 struct cnic_local *cp = dev->cnic_priv;
198 struct cnic_eth_dev *ethdev = cp->ethdev;
199 struct drv_ctl_info info;
200 struct drv_ctl_io *io = &info.data.io;
201
202 info.cmd = DRV_CTL_CTXTBL_WR_CMD;
203 io->offset = off;
204 io->dma_addr = addr;
205 ethdev->drv_ctl(dev->netdev, &info);
206 }
207
208 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
209 {
210 struct cnic_local *cp = dev->cnic_priv;
211 struct cnic_eth_dev *ethdev = cp->ethdev;
212 struct drv_ctl_info info;
213 struct drv_ctl_l2_ring *ring = &info.data.ring;
214
215 if (start)
216 info.cmd = DRV_CTL_START_L2_CMD;
217 else
218 info.cmd = DRV_CTL_STOP_L2_CMD;
219
220 ring->cid = cid;
221 ring->client_id = cl_id;
222 ethdev->drv_ctl(dev->netdev, &info);
223 }
224
225 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
226 {
227 struct cnic_local *cp = dev->cnic_priv;
228 struct cnic_eth_dev *ethdev = cp->ethdev;
229 struct drv_ctl_info info;
230 struct drv_ctl_io *io = &info.data.io;
231
232 info.cmd = DRV_CTL_IO_WR_CMD;
233 io->offset = off;
234 io->data = val;
235 ethdev->drv_ctl(dev->netdev, &info);
236 }
237
238 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
239 {
240 struct cnic_local *cp = dev->cnic_priv;
241 struct cnic_eth_dev *ethdev = cp->ethdev;
242 struct drv_ctl_info info;
243 struct drv_ctl_io *io = &info.data.io;
244
245 info.cmd = DRV_CTL_IO_RD_CMD;
246 io->offset = off;
247 ethdev->drv_ctl(dev->netdev, &info);
248 return io->data;
249 }
250
251 static int cnic_in_use(struct cnic_sock *csk)
252 {
253 return test_bit(SK_F_INUSE, &csk->flags);
254 }
255
256 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
257 {
258 struct cnic_local *cp = dev->cnic_priv;
259 struct cnic_eth_dev *ethdev = cp->ethdev;
260 struct drv_ctl_info info;
261
262 info.cmd = cmd;
263 info.data.credit.credit_count = count;
264 ethdev->drv_ctl(dev->netdev, &info);
265 }
266
267 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
268 {
269 u32 i;
270
271 for (i = 0; i < cp->max_cid_space; i++) {
272 if (cp->ctx_tbl[i].cid == cid) {
273 *l5_cid = i;
274 return 0;
275 }
276 }
277 return -EINVAL;
278 }
279
280 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
281 struct cnic_sock *csk)
282 {
283 struct iscsi_path path_req;
284 char *buf = NULL;
285 u16 len = 0;
286 u32 msg_type = ISCSI_KEVENT_IF_DOWN;
287 struct cnic_ulp_ops *ulp_ops;
288 struct cnic_uio_dev *udev = cp->udev;
289 int rc = 0, retry = 0;
290
291 if (!udev || udev->uio_dev == -1)
292 return -ENODEV;
293
294 if (csk) {
295 len = sizeof(path_req);
296 buf = (char *) &path_req;
297 memset(&path_req, 0, len);
298
299 msg_type = ISCSI_KEVENT_PATH_REQ;
300 path_req.handle = (u64) csk->l5_cid;
301 if (test_bit(SK_F_IPV6, &csk->flags)) {
302 memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
303 sizeof(struct in6_addr));
304 path_req.ip_addr_len = 16;
305 } else {
306 memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
307 sizeof(struct in_addr));
308 path_req.ip_addr_len = 4;
309 }
310 path_req.vlan_id = csk->vlan_id;
311 path_req.pmtu = csk->mtu;
312 }
313
314 while (retry < 3) {
315 rc = 0;
316 rcu_read_lock();
317 ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
318 if (ulp_ops)
319 rc = ulp_ops->iscsi_nl_send_msg(
320 cp->ulp_handle[CNIC_ULP_ISCSI],
321 msg_type, buf, len);
322 rcu_read_unlock();
323 if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
324 break;
325
326 msleep(100);
327 retry++;
328 }
329 return 0;
330 }
331
332 static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
333
334 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
335 char *buf, u16 len)
336 {
337 int rc = -EINVAL;
338
339 switch (msg_type) {
340 case ISCSI_UEVENT_PATH_UPDATE: {
341 struct cnic_local *cp;
342 u32 l5_cid;
343 struct cnic_sock *csk;
344 struct iscsi_path *path_resp;
345
346 if (len < sizeof(*path_resp))
347 break;
348
349 path_resp = (struct iscsi_path *) buf;
350 cp = dev->cnic_priv;
351 l5_cid = (u32) path_resp->handle;
352 if (l5_cid >= MAX_CM_SK_TBL_SZ)
353 break;
354
355 rcu_read_lock();
356 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
357 rc = -ENODEV;
358 rcu_read_unlock();
359 break;
360 }
361 csk = &cp->csk_tbl[l5_cid];
362 csk_hold(csk);
363 if (cnic_in_use(csk) &&
364 test_bit(SK_F_CONNECT_START, &csk->flags)) {
365
366 memcpy(csk->ha, path_resp->mac_addr, 6);
367 if (test_bit(SK_F_IPV6, &csk->flags))
368 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
369 sizeof(struct in6_addr));
370 else
371 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
372 sizeof(struct in_addr));
373
374 if (is_valid_ether_addr(csk->ha)) {
375 cnic_cm_set_pg(csk);
376 } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
377 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
378
379 cnic_cm_upcall(cp, csk,
380 L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
381 clear_bit(SK_F_CONNECT_START, &csk->flags);
382 }
383 }
384 csk_put(csk);
385 rcu_read_unlock();
386 rc = 0;
387 }
388 }
389
390 return rc;
391 }
392
393 static int cnic_offld_prep(struct cnic_sock *csk)
394 {
395 if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
396 return 0;
397
398 if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
399 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
400 return 0;
401 }
402
403 return 1;
404 }
405
406 static int cnic_close_prep(struct cnic_sock *csk)
407 {
408 clear_bit(SK_F_CONNECT_START, &csk->flags);
409 smp_mb__after_clear_bit();
410
411 if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
412 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
413 msleep(1);
414
415 return 1;
416 }
417 return 0;
418 }
419
420 static int cnic_abort_prep(struct cnic_sock *csk)
421 {
422 clear_bit(SK_F_CONNECT_START, &csk->flags);
423 smp_mb__after_clear_bit();
424
425 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
426 msleep(1);
427
428 if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
429 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
430 return 1;
431 }
432
433 return 0;
434 }
435
436 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
437 {
438 struct cnic_dev *dev;
439
440 if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
441 pr_err("%s: Bad type %d\n", __func__, ulp_type);
442 return -EINVAL;
443 }
444 mutex_lock(&cnic_lock);
445 if (cnic_ulp_tbl_prot(ulp_type)) {
446 pr_err("%s: Type %d has already been registered\n",
447 __func__, ulp_type);
448 mutex_unlock(&cnic_lock);
449 return -EBUSY;
450 }
451
452 read_lock(&cnic_dev_lock);
453 list_for_each_entry(dev, &cnic_dev_list, list) {
454 struct cnic_local *cp = dev->cnic_priv;
455
456 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
457 }
458 read_unlock(&cnic_dev_lock);
459
460 atomic_set(&ulp_ops->ref_count, 0);
461 rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
462 mutex_unlock(&cnic_lock);
463
464 /* Prevent race conditions with netdev_event */
465 rtnl_lock();
466 list_for_each_entry(dev, &cnic_dev_list, list) {
467 struct cnic_local *cp = dev->cnic_priv;
468
469 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
470 ulp_ops->cnic_init(dev);
471 }
472 rtnl_unlock();
473
474 return 0;
475 }
476
477 int cnic_unregister_driver(int ulp_type)
478 {
479 struct cnic_dev *dev;
480 struct cnic_ulp_ops *ulp_ops;
481 int i = 0;
482
483 if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
484 pr_err("%s: Bad type %d\n", __func__, ulp_type);
485 return -EINVAL;
486 }
487 mutex_lock(&cnic_lock);
488 ulp_ops = cnic_ulp_tbl_prot(ulp_type);
489 if (!ulp_ops) {
490 pr_err("%s: Type %d has not been registered\n",
491 __func__, ulp_type);
492 goto out_unlock;
493 }
494 read_lock(&cnic_dev_lock);
495 list_for_each_entry(dev, &cnic_dev_list, list) {
496 struct cnic_local *cp = dev->cnic_priv;
497
498 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
499 pr_err("%s: Type %d still has devices registered\n",
500 __func__, ulp_type);
501 read_unlock(&cnic_dev_lock);
502 goto out_unlock;
503 }
504 }
505 read_unlock(&cnic_dev_lock);
506
507 rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
508
509 mutex_unlock(&cnic_lock);
510 synchronize_rcu();
511 while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
512 msleep(100);
513 i++;
514 }
515
516 if (atomic_read(&ulp_ops->ref_count) != 0)
517 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
518 return 0;
519
520 out_unlock:
521 mutex_unlock(&cnic_lock);
522 return -EINVAL;
523 }
524
525 static int cnic_start_hw(struct cnic_dev *);
526 static void cnic_stop_hw(struct cnic_dev *);
527
528 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
529 void *ulp_ctx)
530 {
531 struct cnic_local *cp = dev->cnic_priv;
532 struct cnic_ulp_ops *ulp_ops;
533
534 if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
535 pr_err("%s: Bad type %d\n", __func__, ulp_type);
536 return -EINVAL;
537 }
538 mutex_lock(&cnic_lock);
539 if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
540 pr_err("%s: Driver with type %d has not been registered\n",
541 __func__, ulp_type);
542 mutex_unlock(&cnic_lock);
543 return -EAGAIN;
544 }
545 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
546 pr_err("%s: Type %d has already been registered to this device\n",
547 __func__, ulp_type);
548 mutex_unlock(&cnic_lock);
549 return -EBUSY;
550 }
551
552 clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
553 cp->ulp_handle[ulp_type] = ulp_ctx;
554 ulp_ops = cnic_ulp_tbl_prot(ulp_type);
555 rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
556 cnic_hold(dev);
557
558 if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
559 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
560 ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
561
562 mutex_unlock(&cnic_lock);
563
564 return 0;
565
566 }
567 EXPORT_SYMBOL(cnic_register_driver);
568
569 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
570 {
571 struct cnic_local *cp = dev->cnic_priv;
572 int i = 0;
573
574 if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
575 pr_err("%s: Bad type %d\n", __func__, ulp_type);
576 return -EINVAL;
577 }
578 mutex_lock(&cnic_lock);
579 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
580 rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
581 cnic_put(dev);
582 } else {
583 pr_err("%s: device not registered to this ulp type %d\n",
584 __func__, ulp_type);
585 mutex_unlock(&cnic_lock);
586 return -EINVAL;
587 }
588 mutex_unlock(&cnic_lock);
589
590 if (ulp_type == CNIC_ULP_ISCSI)
591 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
592
593 synchronize_rcu();
594
595 while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
596 i < 20) {
597 msleep(100);
598 i++;
599 }
600 if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
601 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
602
603 return 0;
604 }
605 EXPORT_SYMBOL(cnic_unregister_driver);
606
607 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
608 {
609 id_tbl->start = start_id;
610 id_tbl->max = size;
611 id_tbl->next = 0;
612 spin_lock_init(&id_tbl->lock);
613 id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
614 if (!id_tbl->table)
615 return -ENOMEM;
616
617 return 0;
618 }
619
620 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
621 {
622 kfree(id_tbl->table);
623 id_tbl->table = NULL;
624 }
625
626 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
627 {
628 int ret = -1;
629
630 id -= id_tbl->start;
631 if (id >= id_tbl->max)
632 return ret;
633
634 spin_lock(&id_tbl->lock);
635 if (!test_bit(id, id_tbl->table)) {
636 set_bit(id, id_tbl->table);
637 ret = 0;
638 }
639 spin_unlock(&id_tbl->lock);
640 return ret;
641 }
642
643 /* Returns -1 if not successful */
644 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
645 {
646 u32 id;
647
648 spin_lock(&id_tbl->lock);
649 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
650 if (id >= id_tbl->max) {
651 id = -1;
652 if (id_tbl->next != 0) {
653 id = find_first_zero_bit(id_tbl->table, id_tbl->next);
654 if (id >= id_tbl->next)
655 id = -1;
656 }
657 }
658
659 if (id < id_tbl->max) {
660 set_bit(id, id_tbl->table);
661 id_tbl->next = (id + 1) & (id_tbl->max - 1);
662 id += id_tbl->start;
663 }
664
665 spin_unlock(&id_tbl->lock);
666
667 return id;
668 }
669
670 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
671 {
672 if (id == -1)
673 return;
674
675 id -= id_tbl->start;
676 if (id >= id_tbl->max)
677 return;
678
679 clear_bit(id, id_tbl->table);
680 }
681
682 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
683 {
684 int i;
685
686 if (!dma->pg_arr)
687 return;
688
689 for (i = 0; i < dma->num_pages; i++) {
690 if (dma->pg_arr[i]) {
691 dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
692 dma->pg_arr[i], dma->pg_map_arr[i]);
693 dma->pg_arr[i] = NULL;
694 }
695 }
696 if (dma->pgtbl) {
697 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
698 dma->pgtbl, dma->pgtbl_map);
699 dma->pgtbl = NULL;
700 }
701 kfree(dma->pg_arr);
702 dma->pg_arr = NULL;
703 dma->num_pages = 0;
704 }
705
706 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
707 {
708 int i;
709 __le32 *page_table = (__le32 *) dma->pgtbl;
710
711 for (i = 0; i < dma->num_pages; i++) {
712 /* Each entry needs to be in big endian format. */
713 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
714 page_table++;
715 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
716 page_table++;
717 }
718 }
719
720 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
721 {
722 int i;
723 __le32 *page_table = (__le32 *) dma->pgtbl;
724
725 for (i = 0; i < dma->num_pages; i++) {
726 /* Each entry needs to be in little endian format. */
727 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
728 page_table++;
729 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
730 page_table++;
731 }
732 }
733
734 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
735 int pages, int use_pg_tbl)
736 {
737 int i, size;
738 struct cnic_local *cp = dev->cnic_priv;
739
740 size = pages * (sizeof(void *) + sizeof(dma_addr_t));
741 dma->pg_arr = kzalloc(size, GFP_ATOMIC);
742 if (dma->pg_arr == NULL)
743 return -ENOMEM;
744
745 dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
746 dma->num_pages = pages;
747
748 for (i = 0; i < pages; i++) {
749 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
750 BCM_PAGE_SIZE,
751 &dma->pg_map_arr[i],
752 GFP_ATOMIC);
753 if (dma->pg_arr[i] == NULL)
754 goto error;
755 }
756 if (!use_pg_tbl)
757 return 0;
758
759 dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
760 ~(BCM_PAGE_SIZE - 1);
761 dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
762 &dma->pgtbl_map, GFP_ATOMIC);
763 if (dma->pgtbl == NULL)
764 goto error;
765
766 cp->setup_pgtbl(dev, dma);
767
768 return 0;
769
770 error:
771 cnic_free_dma(dev, dma);
772 return -ENOMEM;
773 }
774
775 static void cnic_free_context(struct cnic_dev *dev)
776 {
777 struct cnic_local *cp = dev->cnic_priv;
778 int i;
779
780 for (i = 0; i < cp->ctx_blks; i++) {
781 if (cp->ctx_arr[i].ctx) {
782 dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
783 cp->ctx_arr[i].ctx,
784 cp->ctx_arr[i].mapping);
785 cp->ctx_arr[i].ctx = NULL;
786 }
787 }
788 }
789
790 static void __cnic_free_uio(struct cnic_uio_dev *udev)
791 {
792 uio_unregister_device(&udev->cnic_uinfo);
793
794 if (udev->l2_buf) {
795 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
796 udev->l2_buf, udev->l2_buf_map);
797 udev->l2_buf = NULL;
798 }
799
800 if (udev->l2_ring) {
801 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
802 udev->l2_ring, udev->l2_ring_map);
803 udev->l2_ring = NULL;
804 }
805
806 pci_dev_put(udev->pdev);
807 kfree(udev);
808 }
809
810 static void cnic_free_uio(struct cnic_uio_dev *udev)
811 {
812 if (!udev)
813 return;
814
815 write_lock(&cnic_dev_lock);
816 list_del_init(&udev->list);
817 write_unlock(&cnic_dev_lock);
818 __cnic_free_uio(udev);
819 }
820
821 static void cnic_free_resc(struct cnic_dev *dev)
822 {
823 struct cnic_local *cp = dev->cnic_priv;
824 struct cnic_uio_dev *udev = cp->udev;
825
826 if (udev) {
827 udev->dev = NULL;
828 cp->udev = NULL;
829 }
830
831 cnic_free_context(dev);
832 kfree(cp->ctx_arr);
833 cp->ctx_arr = NULL;
834 cp->ctx_blks = 0;
835
836 cnic_free_dma(dev, &cp->gbl_buf_info);
837 cnic_free_dma(dev, &cp->conn_buf_info);
838 cnic_free_dma(dev, &cp->kwq_info);
839 cnic_free_dma(dev, &cp->kwq_16_data_info);
840 cnic_free_dma(dev, &cp->kcq2.dma);
841 cnic_free_dma(dev, &cp->kcq1.dma);
842 kfree(cp->iscsi_tbl);
843 cp->iscsi_tbl = NULL;
844 kfree(cp->ctx_tbl);
845 cp->ctx_tbl = NULL;
846
847 cnic_free_id_tbl(&cp->fcoe_cid_tbl);
848 cnic_free_id_tbl(&cp->cid_tbl);
849 }
850
851 static int cnic_alloc_context(struct cnic_dev *dev)
852 {
853 struct cnic_local *cp = dev->cnic_priv;
854
855 if (CHIP_NUM(cp) == CHIP_NUM_5709) {
856 int i, k, arr_size;
857
858 cp->ctx_blk_size = BCM_PAGE_SIZE;
859 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
860 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
861 sizeof(struct cnic_ctx);
862 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
863 if (cp->ctx_arr == NULL)
864 return -ENOMEM;
865
866 k = 0;
867 for (i = 0; i < 2; i++) {
868 u32 j, reg, off, lo, hi;
869
870 if (i == 0)
871 off = BNX2_PG_CTX_MAP;
872 else
873 off = BNX2_ISCSI_CTX_MAP;
874
875 reg = cnic_reg_rd_ind(dev, off);
876 lo = reg >> 16;
877 hi = reg & 0xffff;
878 for (j = lo; j < hi; j += cp->cids_per_blk, k++)
879 cp->ctx_arr[k].cid = j;
880 }
881
882 cp->ctx_blks = k;
883 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
884 cp->ctx_blks = 0;
885 return -ENOMEM;
886 }
887
888 for (i = 0; i < cp->ctx_blks; i++) {
889 cp->ctx_arr[i].ctx =
890 dma_alloc_coherent(&dev->pcidev->dev,
891 BCM_PAGE_SIZE,
892 &cp->ctx_arr[i].mapping,
893 GFP_KERNEL);
894 if (cp->ctx_arr[i].ctx == NULL)
895 return -ENOMEM;
896 }
897 }
898 return 0;
899 }
900
901 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info)
902 {
903 int err, i, is_bnx2 = 0;
904 struct kcqe **kcq;
905
906 if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags))
907 is_bnx2 = 1;
908
909 err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, is_bnx2);
910 if (err)
911 return err;
912
913 kcq = (struct kcqe **) info->dma.pg_arr;
914 info->kcq = kcq;
915
916 if (is_bnx2)
917 return 0;
918
919 for (i = 0; i < KCQ_PAGE_CNT; i++) {
920 struct bnx2x_bd_chain_next *next =
921 (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
922 int j = i + 1;
923
924 if (j >= KCQ_PAGE_CNT)
925 j = 0;
926 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
927 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
928 }
929 return 0;
930 }
931
932 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
933 {
934 struct cnic_local *cp = dev->cnic_priv;
935 struct cnic_uio_dev *udev;
936
937 read_lock(&cnic_dev_lock);
938 list_for_each_entry(udev, &cnic_udev_list, list) {
939 if (udev->pdev == dev->pcidev) {
940 udev->dev = dev;
941 cp->udev = udev;
942 read_unlock(&cnic_dev_lock);
943 return 0;
944 }
945 }
946 read_unlock(&cnic_dev_lock);
947
948 udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
949 if (!udev)
950 return -ENOMEM;
951
952 udev->uio_dev = -1;
953
954 udev->dev = dev;
955 udev->pdev = dev->pcidev;
956 udev->l2_ring_size = pages * BCM_PAGE_SIZE;
957 udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
958 &udev->l2_ring_map,
959 GFP_KERNEL | __GFP_COMP);
960 if (!udev->l2_ring)
961 goto err_udev;
962
963 udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
964 udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
965 udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
966 &udev->l2_buf_map,
967 GFP_KERNEL | __GFP_COMP);
968 if (!udev->l2_buf)
969 goto err_dma;
970
971 write_lock(&cnic_dev_lock);
972 list_add(&udev->list, &cnic_udev_list);
973 write_unlock(&cnic_dev_lock);
974
975 pci_dev_get(udev->pdev);
976
977 cp->udev = udev;
978
979 return 0;
980 err_dma:
981 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
982 udev->l2_ring, udev->l2_ring_map);
983 err_udev:
984 kfree(udev);
985 return -ENOMEM;
986 }
987
988 static int cnic_init_uio(struct cnic_dev *dev)
989 {
990 struct cnic_local *cp = dev->cnic_priv;
991 struct cnic_uio_dev *udev = cp->udev;
992 struct uio_info *uinfo;
993 int ret = 0;
994
995 if (!udev)
996 return -ENOMEM;
997
998 uinfo = &udev->cnic_uinfo;
999
1000 uinfo->mem[0].addr = dev->netdev->base_addr;
1001 uinfo->mem[0].internal_addr = dev->regview;
1002 uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
1003 uinfo->mem[0].memtype = UIO_MEM_PHYS;
1004
1005 if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1006 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1007 PAGE_MASK;
1008 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1009 uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1010 else
1011 uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1012
1013 uinfo->name = "bnx2_cnic";
1014 } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1015 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1016 PAGE_MASK;
1017 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1018
1019 uinfo->name = "bnx2x_cnic";
1020 }
1021
1022 uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1023
1024 uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1025 uinfo->mem[2].size = udev->l2_ring_size;
1026 uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1027
1028 uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1029 uinfo->mem[3].size = udev->l2_buf_size;
1030 uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1031
1032 uinfo->version = CNIC_MODULE_VERSION;
1033 uinfo->irq = UIO_IRQ_CUSTOM;
1034
1035 uinfo->open = cnic_uio_open;
1036 uinfo->release = cnic_uio_close;
1037
1038 if (udev->uio_dev == -1) {
1039 if (!uinfo->priv) {
1040 uinfo->priv = udev;
1041
1042 ret = uio_register_device(&udev->pdev->dev, uinfo);
1043 }
1044 } else {
1045 cnic_init_rings(dev);
1046 }
1047
1048 return ret;
1049 }
1050
1051 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1052 {
1053 struct cnic_local *cp = dev->cnic_priv;
1054 int ret;
1055
1056 ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1057 if (ret)
1058 goto error;
1059 cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1060
1061 ret = cnic_alloc_kcq(dev, &cp->kcq1);
1062 if (ret)
1063 goto error;
1064
1065 ret = cnic_alloc_context(dev);
1066 if (ret)
1067 goto error;
1068
1069 ret = cnic_alloc_uio_rings(dev, 2);
1070 if (ret)
1071 goto error;
1072
1073 ret = cnic_init_uio(dev);
1074 if (ret)
1075 goto error;
1076
1077 return 0;
1078
1079 error:
1080 cnic_free_resc(dev);
1081 return ret;
1082 }
1083
1084 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1085 {
1086 struct cnic_local *cp = dev->cnic_priv;
1087 int ctx_blk_size = cp->ethdev->ctx_blk_size;
1088 int total_mem, blks, i;
1089
1090 total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1091 blks = total_mem / ctx_blk_size;
1092 if (total_mem % ctx_blk_size)
1093 blks++;
1094
1095 if (blks > cp->ethdev->ctx_tbl_len)
1096 return -ENOMEM;
1097
1098 cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1099 if (cp->ctx_arr == NULL)
1100 return -ENOMEM;
1101
1102 cp->ctx_blks = blks;
1103 cp->ctx_blk_size = ctx_blk_size;
1104 if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1105 cp->ctx_align = 0;
1106 else
1107 cp->ctx_align = ctx_blk_size;
1108
1109 cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1110
1111 for (i = 0; i < blks; i++) {
1112 cp->ctx_arr[i].ctx =
1113 dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1114 &cp->ctx_arr[i].mapping,
1115 GFP_KERNEL);
1116 if (cp->ctx_arr[i].ctx == NULL)
1117 return -ENOMEM;
1118
1119 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1120 if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1121 cnic_free_context(dev);
1122 cp->ctx_blk_size += cp->ctx_align;
1123 i = -1;
1124 continue;
1125 }
1126 }
1127 }
1128 return 0;
1129 }
1130
1131 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1132 {
1133 struct cnic_local *cp = dev->cnic_priv;
1134 struct cnic_eth_dev *ethdev = cp->ethdev;
1135 u32 start_cid = ethdev->starting_cid;
1136 int i, j, n, ret, pages;
1137 struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1138
1139 cp->iro_arr = ethdev->iro_arr;
1140
1141 cp->max_cid_space = MAX_ISCSI_TBL_SZ + BNX2X_FCOE_NUM_CONNECTIONS;
1142 cp->iscsi_start_cid = start_cid;
1143 cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1144
1145 if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
1146 cp->max_cid_space += BNX2X_FCOE_NUM_CONNECTIONS;
1147 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1148 if (!cp->fcoe_init_cid)
1149 cp->fcoe_init_cid = 0x10;
1150 }
1151
1152 if (start_cid < BNX2X_ISCSI_START_CID) {
1153 u32 delta = BNX2X_ISCSI_START_CID - start_cid;
1154
1155 cp->iscsi_start_cid = BNX2X_ISCSI_START_CID;
1156 cp->fcoe_start_cid += delta;
1157 cp->max_cid_space += delta;
1158 }
1159
1160 cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1161 GFP_KERNEL);
1162 if (!cp->iscsi_tbl)
1163 goto error;
1164
1165 cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1166 cp->max_cid_space, GFP_KERNEL);
1167 if (!cp->ctx_tbl)
1168 goto error;
1169
1170 for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1171 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1172 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1173 }
1174
1175 for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1176 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1177
1178 pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1179 PAGE_SIZE;
1180
1181 ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1182 if (ret)
1183 return -ENOMEM;
1184
1185 n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1186 for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1187 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1188
1189 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1190 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1191 off;
1192
1193 if ((i % n) == (n - 1))
1194 j++;
1195 }
1196
1197 ret = cnic_alloc_kcq(dev, &cp->kcq1);
1198 if (ret)
1199 goto error;
1200
1201 if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
1202 ret = cnic_alloc_kcq(dev, &cp->kcq2);
1203 if (ret)
1204 goto error;
1205 }
1206
1207 pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
1208 BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
1209 ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
1210 if (ret)
1211 goto error;
1212
1213 pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1214 ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1215 if (ret)
1216 goto error;
1217
1218 ret = cnic_alloc_bnx2x_context(dev);
1219 if (ret)
1220 goto error;
1221
1222 cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1223
1224 cp->l2_rx_ring_size = 15;
1225
1226 ret = cnic_alloc_uio_rings(dev, 4);
1227 if (ret)
1228 goto error;
1229
1230 ret = cnic_init_uio(dev);
1231 if (ret)
1232 goto error;
1233
1234 return 0;
1235
1236 error:
1237 cnic_free_resc(dev);
1238 return -ENOMEM;
1239 }
1240
1241 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1242 {
1243 return cp->max_kwq_idx -
1244 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1245 }
1246
1247 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1248 u32 num_wqes)
1249 {
1250 struct cnic_local *cp = dev->cnic_priv;
1251 struct kwqe *prod_qe;
1252 u16 prod, sw_prod, i;
1253
1254 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1255 return -EAGAIN; /* bnx2 is down */
1256
1257 spin_lock_bh(&cp->cnic_ulp_lock);
1258 if (num_wqes > cnic_kwq_avail(cp) &&
1259 !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1260 spin_unlock_bh(&cp->cnic_ulp_lock);
1261 return -EAGAIN;
1262 }
1263
1264 clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1265
1266 prod = cp->kwq_prod_idx;
1267 sw_prod = prod & MAX_KWQ_IDX;
1268 for (i = 0; i < num_wqes; i++) {
1269 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1270 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1271 prod++;
1272 sw_prod = prod & MAX_KWQ_IDX;
1273 }
1274 cp->kwq_prod_idx = prod;
1275
1276 CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1277
1278 spin_unlock_bh(&cp->cnic_ulp_lock);
1279 return 0;
1280 }
1281
1282 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1283 union l5cm_specific_data *l5_data)
1284 {
1285 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1286 dma_addr_t map;
1287
1288 map = ctx->kwqe_data_mapping;
1289 l5_data->phy_address.lo = (u64) map & 0xffffffff;
1290 l5_data->phy_address.hi = (u64) map >> 32;
1291 return ctx->kwqe_data;
1292 }
1293
1294 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1295 u32 type, union l5cm_specific_data *l5_data)
1296 {
1297 struct cnic_local *cp = dev->cnic_priv;
1298 struct l5cm_spe kwqe;
1299 struct kwqe_16 *kwq[1];
1300 u16 type_16;
1301 int ret;
1302
1303 kwqe.hdr.conn_and_cmd_data =
1304 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1305 BNX2X_HW_CID(cp, cid)));
1306
1307 type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1308 type_16 |= (cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1309 SPE_HDR_FUNCTION_ID;
1310
1311 kwqe.hdr.type = cpu_to_le16(type_16);
1312 kwqe.hdr.reserved1 = 0;
1313 kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1314 kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1315
1316 kwq[0] = (struct kwqe_16 *) &kwqe;
1317
1318 spin_lock_bh(&cp->cnic_ulp_lock);
1319 ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1320 spin_unlock_bh(&cp->cnic_ulp_lock);
1321
1322 if (ret == 1)
1323 return 0;
1324
1325 return -EBUSY;
1326 }
1327
1328 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1329 struct kcqe *cqes[], u32 num_cqes)
1330 {
1331 struct cnic_local *cp = dev->cnic_priv;
1332 struct cnic_ulp_ops *ulp_ops;
1333
1334 rcu_read_lock();
1335 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1336 if (likely(ulp_ops)) {
1337 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1338 cqes, num_cqes);
1339 }
1340 rcu_read_unlock();
1341 }
1342
1343 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1344 {
1345 struct cnic_local *cp = dev->cnic_priv;
1346 struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1347 int hq_bds, pages;
1348 u32 pfid = cp->pfid;
1349
1350 cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1351 cp->num_ccells = req1->num_ccells_per_conn;
1352 cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1353 cp->num_iscsi_tasks;
1354 cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1355 BNX2X_ISCSI_R2TQE_SIZE;
1356 cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1357 pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1358 hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1359 cp->num_cqs = req1->num_cqs;
1360
1361 if (!dev->max_iscsi_conn)
1362 return 0;
1363
1364 /* init Tstorm RAM */
1365 CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1366 req1->rq_num_wqes);
1367 CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1368 PAGE_SIZE);
1369 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1370 TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1371 CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1372 TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1373 req1->num_tasks_per_conn);
1374
1375 /* init Ustorm RAM */
1376 CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1377 USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1378 req1->rq_buffer_size);
1379 CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1380 PAGE_SIZE);
1381 CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1382 USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1383 CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1384 USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1385 req1->num_tasks_per_conn);
1386 CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1387 req1->rq_num_wqes);
1388 CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1389 req1->cq_num_wqes);
1390 CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1391 cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1392
1393 /* init Xstorm RAM */
1394 CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1395 PAGE_SIZE);
1396 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1397 XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1398 CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1399 XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1400 req1->num_tasks_per_conn);
1401 CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1402 hq_bds);
1403 CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1404 req1->num_tasks_per_conn);
1405 CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1406 cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1407
1408 /* init Cstorm RAM */
1409 CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1410 PAGE_SIZE);
1411 CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1412 CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1413 CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1414 CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1415 req1->num_tasks_per_conn);
1416 CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1417 req1->cq_num_wqes);
1418 CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1419 hq_bds);
1420
1421 return 0;
1422 }
1423
1424 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1425 {
1426 struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1427 struct cnic_local *cp = dev->cnic_priv;
1428 u32 pfid = cp->pfid;
1429 struct iscsi_kcqe kcqe;
1430 struct kcqe *cqes[1];
1431
1432 memset(&kcqe, 0, sizeof(kcqe));
1433 if (!dev->max_iscsi_conn) {
1434 kcqe.completion_status =
1435 ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1436 goto done;
1437 }
1438
1439 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1440 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1441 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1442 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1443 req2->error_bit_map[1]);
1444
1445 CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1446 USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1447 CNIC_WR(dev, BAR_USTRORM_INTMEM +
1448 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1449 CNIC_WR(dev, BAR_USTRORM_INTMEM +
1450 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1451 req2->error_bit_map[1]);
1452
1453 CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1454 CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1455
1456 kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1457
1458 done:
1459 kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1460 cqes[0] = (struct kcqe *) &kcqe;
1461 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1462
1463 return 0;
1464 }
1465
1466 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1467 {
1468 struct cnic_local *cp = dev->cnic_priv;
1469 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1470
1471 if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1472 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1473
1474 cnic_free_dma(dev, &iscsi->hq_info);
1475 cnic_free_dma(dev, &iscsi->r2tq_info);
1476 cnic_free_dma(dev, &iscsi->task_array_info);
1477 cnic_free_id(&cp->cid_tbl, ctx->cid);
1478 } else {
1479 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1480 }
1481
1482 ctx->cid = 0;
1483 }
1484
1485 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1486 {
1487 u32 cid;
1488 int ret, pages;
1489 struct cnic_local *cp = dev->cnic_priv;
1490 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1491 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1492
1493 if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1494 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1495 if (cid == -1) {
1496 ret = -ENOMEM;
1497 goto error;
1498 }
1499 ctx->cid = cid;
1500 return 0;
1501 }
1502
1503 cid = cnic_alloc_new_id(&cp->cid_tbl);
1504 if (cid == -1) {
1505 ret = -ENOMEM;
1506 goto error;
1507 }
1508
1509 ctx->cid = cid;
1510 pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1511
1512 ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1513 if (ret)
1514 goto error;
1515
1516 pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1517 ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1518 if (ret)
1519 goto error;
1520
1521 pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1522 ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1523 if (ret)
1524 goto error;
1525
1526 return 0;
1527
1528 error:
1529 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1530 return ret;
1531 }
1532
1533 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1534 struct regpair *ctx_addr)
1535 {
1536 struct cnic_local *cp = dev->cnic_priv;
1537 struct cnic_eth_dev *ethdev = cp->ethdev;
1538 int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1539 int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1540 unsigned long align_off = 0;
1541 dma_addr_t ctx_map;
1542 void *ctx;
1543
1544 if (cp->ctx_align) {
1545 unsigned long mask = cp->ctx_align - 1;
1546
1547 if (cp->ctx_arr[blk].mapping & mask)
1548 align_off = cp->ctx_align -
1549 (cp->ctx_arr[blk].mapping & mask);
1550 }
1551 ctx_map = cp->ctx_arr[blk].mapping + align_off +
1552 (off * BNX2X_CONTEXT_MEM_SIZE);
1553 ctx = cp->ctx_arr[blk].ctx + align_off +
1554 (off * BNX2X_CONTEXT_MEM_SIZE);
1555 if (init)
1556 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1557
1558 ctx_addr->lo = ctx_map & 0xffffffff;
1559 ctx_addr->hi = (u64) ctx_map >> 32;
1560 return ctx;
1561 }
1562
1563 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1564 u32 num)
1565 {
1566 struct cnic_local *cp = dev->cnic_priv;
1567 struct iscsi_kwqe_conn_offload1 *req1 =
1568 (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1569 struct iscsi_kwqe_conn_offload2 *req2 =
1570 (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1571 struct iscsi_kwqe_conn_offload3 *req3;
1572 struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1573 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1574 u32 cid = ctx->cid;
1575 u32 hw_cid = BNX2X_HW_CID(cp, cid);
1576 struct iscsi_context *ictx;
1577 struct regpair context_addr;
1578 int i, j, n = 2, n_max;
1579
1580 ctx->ctx_flags = 0;
1581 if (!req2->num_additional_wqes)
1582 return -EINVAL;
1583
1584 n_max = req2->num_additional_wqes + 2;
1585
1586 ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1587 if (ictx == NULL)
1588 return -ENOMEM;
1589
1590 req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1591
1592 ictx->xstorm_ag_context.hq_prod = 1;
1593
1594 ictx->xstorm_st_context.iscsi.first_burst_length =
1595 ISCSI_DEF_FIRST_BURST_LEN;
1596 ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1597 ISCSI_DEF_MAX_RECV_SEG_LEN;
1598 ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1599 req1->sq_page_table_addr_lo;
1600 ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1601 req1->sq_page_table_addr_hi;
1602 ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1603 ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1604 ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1605 iscsi->hq_info.pgtbl_map & 0xffffffff;
1606 ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1607 (u64) iscsi->hq_info.pgtbl_map >> 32;
1608 ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1609 iscsi->hq_info.pgtbl[0];
1610 ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1611 iscsi->hq_info.pgtbl[1];
1612 ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1613 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1614 ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1615 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1616 ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1617 iscsi->r2tq_info.pgtbl[0];
1618 ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1619 iscsi->r2tq_info.pgtbl[1];
1620 ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1621 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1622 ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1623 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1624 ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1625 BNX2X_ISCSI_PBL_NOT_CACHED;
1626 ictx->xstorm_st_context.iscsi.flags.flags |=
1627 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1628 ictx->xstorm_st_context.iscsi.flags.flags |=
1629 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1630
1631 ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1632 /* TSTORM requires the base address of RQ DB & not PTE */
1633 ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1634 req2->rq_page_table_addr_lo & PAGE_MASK;
1635 ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1636 req2->rq_page_table_addr_hi;
1637 ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1638 ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1639 ictx->tstorm_st_context.tcp.flags2 |=
1640 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1641 ictx->tstorm_st_context.tcp.ooo_support_mode =
1642 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1643
1644 ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1645
1646 ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1647 req2->rq_page_table_addr_lo;
1648 ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1649 req2->rq_page_table_addr_hi;
1650 ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1651 ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1652 ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1653 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1654 ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1655 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1656 ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1657 iscsi->r2tq_info.pgtbl[0];
1658 ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1659 iscsi->r2tq_info.pgtbl[1];
1660 ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1661 req1->cq_page_table_addr_lo;
1662 ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1663 req1->cq_page_table_addr_hi;
1664 ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1665 ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1666 ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1667 ictx->ustorm_st_context.task_pbe_cache_index =
1668 BNX2X_ISCSI_PBL_NOT_CACHED;
1669 ictx->ustorm_st_context.task_pdu_cache_index =
1670 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1671
1672 for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1673 if (j == 3) {
1674 if (n >= n_max)
1675 break;
1676 req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1677 j = 0;
1678 }
1679 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1680 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1681 req3->qp_first_pte[j].hi;
1682 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1683 req3->qp_first_pte[j].lo;
1684 }
1685
1686 ictx->ustorm_st_context.task_pbl_base.lo =
1687 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1688 ictx->ustorm_st_context.task_pbl_base.hi =
1689 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1690 ictx->ustorm_st_context.tce_phy_addr.lo =
1691 iscsi->task_array_info.pgtbl[0];
1692 ictx->ustorm_st_context.tce_phy_addr.hi =
1693 iscsi->task_array_info.pgtbl[1];
1694 ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1695 ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1696 ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1697 ictx->ustorm_st_context.negotiated_rx_and_flags |=
1698 ISCSI_DEF_MAX_BURST_LEN;
1699 ictx->ustorm_st_context.negotiated_rx |=
1700 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1701 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1702
1703 ictx->cstorm_st_context.hq_pbl_base.lo =
1704 iscsi->hq_info.pgtbl_map & 0xffffffff;
1705 ictx->cstorm_st_context.hq_pbl_base.hi =
1706 (u64) iscsi->hq_info.pgtbl_map >> 32;
1707 ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1708 ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1709 ictx->cstorm_st_context.task_pbl_base.lo =
1710 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1711 ictx->cstorm_st_context.task_pbl_base.hi =
1712 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1713 /* CSTORM and USTORM initialization is different, CSTORM requires
1714 * CQ DB base & not PTE addr */
1715 ictx->cstorm_st_context.cq_db_base.lo =
1716 req1->cq_page_table_addr_lo & PAGE_MASK;
1717 ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1718 ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1719 ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1720 for (i = 0; i < cp->num_cqs; i++) {
1721 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1722 ISCSI_INITIAL_SN;
1723 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1724 ISCSI_INITIAL_SN;
1725 }
1726
1727 ictx->xstorm_ag_context.cdu_reserved =
1728 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1729 ISCSI_CONNECTION_TYPE);
1730 ictx->ustorm_ag_context.cdu_usage =
1731 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1732 ISCSI_CONNECTION_TYPE);
1733 return 0;
1734
1735 }
1736
1737 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1738 u32 num, int *work)
1739 {
1740 struct iscsi_kwqe_conn_offload1 *req1;
1741 struct iscsi_kwqe_conn_offload2 *req2;
1742 struct cnic_local *cp = dev->cnic_priv;
1743 struct cnic_context *ctx;
1744 struct iscsi_kcqe kcqe;
1745 struct kcqe *cqes[1];
1746 u32 l5_cid;
1747 int ret = 0;
1748
1749 if (num < 2) {
1750 *work = num;
1751 return -EINVAL;
1752 }
1753
1754 req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1755 req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1756 if ((num - 2) < req2->num_additional_wqes) {
1757 *work = num;
1758 return -EINVAL;
1759 }
1760 *work = 2 + req2->num_additional_wqes;
1761
1762 l5_cid = req1->iscsi_conn_id;
1763 if (l5_cid >= MAX_ISCSI_TBL_SZ)
1764 return -EINVAL;
1765
1766 memset(&kcqe, 0, sizeof(kcqe));
1767 kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1768 kcqe.iscsi_conn_id = l5_cid;
1769 kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1770
1771 ctx = &cp->ctx_tbl[l5_cid];
1772 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1773 kcqe.completion_status =
1774 ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1775 goto done;
1776 }
1777
1778 if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1779 atomic_dec(&cp->iscsi_conn);
1780 goto done;
1781 }
1782 ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1783 if (ret) {
1784 atomic_dec(&cp->iscsi_conn);
1785 ret = 0;
1786 goto done;
1787 }
1788 ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1789 if (ret < 0) {
1790 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1791 atomic_dec(&cp->iscsi_conn);
1792 goto done;
1793 }
1794
1795 kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1796 kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1797
1798 done:
1799 cqes[0] = (struct kcqe *) &kcqe;
1800 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1801 return ret;
1802 }
1803
1804
1805 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1806 {
1807 struct cnic_local *cp = dev->cnic_priv;
1808 struct iscsi_kwqe_conn_update *req =
1809 (struct iscsi_kwqe_conn_update *) kwqe;
1810 void *data;
1811 union l5cm_specific_data l5_data;
1812 u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1813 int ret;
1814
1815 if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1816 return -EINVAL;
1817
1818 data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1819 if (!data)
1820 return -ENOMEM;
1821
1822 memcpy(data, kwqe, sizeof(struct kwqe));
1823
1824 ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1825 req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1826 return ret;
1827 }
1828
1829 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1830 {
1831 struct cnic_local *cp = dev->cnic_priv;
1832 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1833 union l5cm_specific_data l5_data;
1834 int ret;
1835 u32 hw_cid;
1836
1837 init_waitqueue_head(&ctx->waitq);
1838 ctx->wait_cond = 0;
1839 memset(&l5_data, 0, sizeof(l5_data));
1840 hw_cid = BNX2X_HW_CID(cp, ctx->cid);
1841
1842 ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1843 hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1844
1845 if (ret == 0)
1846 wait_event(ctx->waitq, ctx->wait_cond);
1847
1848 return ret;
1849 }
1850
1851 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1852 {
1853 struct cnic_local *cp = dev->cnic_priv;
1854 struct iscsi_kwqe_conn_destroy *req =
1855 (struct iscsi_kwqe_conn_destroy *) kwqe;
1856 u32 l5_cid = req->reserved0;
1857 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1858 int ret = 0;
1859 struct iscsi_kcqe kcqe;
1860 struct kcqe *cqes[1];
1861
1862 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1863 goto skip_cfc_delete;
1864
1865 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
1866 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
1867
1868 if (delta > (2 * HZ))
1869 delta = 0;
1870
1871 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
1872 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
1873 goto destroy_reply;
1874 }
1875
1876 ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
1877
1878 skip_cfc_delete:
1879 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1880
1881 atomic_dec(&cp->iscsi_conn);
1882 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1883
1884 destroy_reply:
1885 memset(&kcqe, 0, sizeof(kcqe));
1886 kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1887 kcqe.iscsi_conn_id = l5_cid;
1888 kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1889 kcqe.iscsi_conn_context_id = req->context_id;
1890
1891 cqes[0] = (struct kcqe *) &kcqe;
1892 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1893
1894 return ret;
1895 }
1896
1897 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1898 struct l4_kwq_connect_req1 *kwqe1,
1899 struct l4_kwq_connect_req3 *kwqe3,
1900 struct l5cm_active_conn_buffer *conn_buf)
1901 {
1902 struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1903 struct l5cm_xstorm_conn_buffer *xstorm_buf =
1904 &conn_buf->xstorm_conn_buffer;
1905 struct l5cm_tstorm_conn_buffer *tstorm_buf =
1906 &conn_buf->tstorm_conn_buffer;
1907 struct regpair context_addr;
1908 u32 cid = BNX2X_SW_CID(kwqe1->cid);
1909 struct in6_addr src_ip, dst_ip;
1910 int i;
1911 u32 *addrp;
1912
1913 addrp = (u32 *) &conn_addr->local_ip_addr;
1914 for (i = 0; i < 4; i++, addrp++)
1915 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1916
1917 addrp = (u32 *) &conn_addr->remote_ip_addr;
1918 for (i = 0; i < 4; i++, addrp++)
1919 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1920
1921 cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1922
1923 xstorm_buf->context_addr.hi = context_addr.hi;
1924 xstorm_buf->context_addr.lo = context_addr.lo;
1925 xstorm_buf->mss = 0xffff;
1926 xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1927 if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1928 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1929 xstorm_buf->pseudo_header_checksum =
1930 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1931
1932 if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1933 tstorm_buf->params |=
1934 L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1935 if (kwqe3->ka_timeout) {
1936 tstorm_buf->ka_enable = 1;
1937 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1938 tstorm_buf->ka_interval = kwqe3->ka_interval;
1939 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1940 }
1941 tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1942 tstorm_buf->snd_buf = kwqe3->snd_buf;
1943 tstorm_buf->max_rt_time = 0xffffffff;
1944 }
1945
1946 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1947 {
1948 struct cnic_local *cp = dev->cnic_priv;
1949 u32 pfid = cp->pfid;
1950 u8 *mac = dev->mac_addr;
1951
1952 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1953 XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
1954 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1955 XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
1956 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1957 XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
1958 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1959 XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
1960 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1961 XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
1962 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1963 XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
1964
1965 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1966 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
1967 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1968 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1969 mac[4]);
1970 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1971 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
1972 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1973 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1974 mac[2]);
1975 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1976 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 2,
1977 mac[1]);
1978 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1979 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 3,
1980 mac[0]);
1981 }
1982
1983 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1984 {
1985 struct cnic_local *cp = dev->cnic_priv;
1986 u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1987 u16 tstorm_flags = 0;
1988
1989 if (tcp_ts) {
1990 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1991 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1992 }
1993
1994 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1995 XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
1996
1997 CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1998 TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
1999 }
2000
2001 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2002 u32 num, int *work)
2003 {
2004 struct cnic_local *cp = dev->cnic_priv;
2005 struct l4_kwq_connect_req1 *kwqe1 =
2006 (struct l4_kwq_connect_req1 *) wqes[0];
2007 struct l4_kwq_connect_req3 *kwqe3;
2008 struct l5cm_active_conn_buffer *conn_buf;
2009 struct l5cm_conn_addr_params *conn_addr;
2010 union l5cm_specific_data l5_data;
2011 u32 l5_cid = kwqe1->pg_cid;
2012 struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2013 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2014 int ret;
2015
2016 if (num < 2) {
2017 *work = num;
2018 return -EINVAL;
2019 }
2020
2021 if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2022 *work = 3;
2023 else
2024 *work = 2;
2025
2026 if (num < *work) {
2027 *work = num;
2028 return -EINVAL;
2029 }
2030
2031 if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2032 netdev_err(dev->netdev, "conn_buf size too big\n");
2033 return -ENOMEM;
2034 }
2035 conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2036 if (!conn_buf)
2037 return -ENOMEM;
2038
2039 memset(conn_buf, 0, sizeof(*conn_buf));
2040
2041 conn_addr = &conn_buf->conn_addr_buf;
2042 conn_addr->remote_addr_0 = csk->ha[0];
2043 conn_addr->remote_addr_1 = csk->ha[1];
2044 conn_addr->remote_addr_2 = csk->ha[2];
2045 conn_addr->remote_addr_3 = csk->ha[3];
2046 conn_addr->remote_addr_4 = csk->ha[4];
2047 conn_addr->remote_addr_5 = csk->ha[5];
2048
2049 if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2050 struct l4_kwq_connect_req2 *kwqe2 =
2051 (struct l4_kwq_connect_req2 *) wqes[1];
2052
2053 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2054 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2055 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2056
2057 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2058 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2059 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2060 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2061 }
2062 kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2063
2064 conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2065 conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2066 conn_addr->local_tcp_port = kwqe1->src_port;
2067 conn_addr->remote_tcp_port = kwqe1->dst_port;
2068
2069 conn_addr->pmtu = kwqe3->pmtu;
2070 cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2071
2072 CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2073 XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2074
2075 cnic_bnx2x_set_tcp_timestamp(dev,
2076 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
2077
2078 ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2079 kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2080 if (!ret)
2081 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2082
2083 return ret;
2084 }
2085
2086 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2087 {
2088 struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2089 union l5cm_specific_data l5_data;
2090 int ret;
2091
2092 memset(&l5_data, 0, sizeof(l5_data));
2093 ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2094 req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2095 return ret;
2096 }
2097
2098 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2099 {
2100 struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2101 union l5cm_specific_data l5_data;
2102 int ret;
2103
2104 memset(&l5_data, 0, sizeof(l5_data));
2105 ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2106 req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2107 return ret;
2108 }
2109 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2110 {
2111 struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2112 struct l4_kcq kcqe;
2113 struct kcqe *cqes[1];
2114
2115 memset(&kcqe, 0, sizeof(kcqe));
2116 kcqe.pg_host_opaque = req->host_opaque;
2117 kcqe.pg_cid = req->host_opaque;
2118 kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2119 cqes[0] = (struct kcqe *) &kcqe;
2120 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2121 return 0;
2122 }
2123
2124 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2125 {
2126 struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2127 struct l4_kcq kcqe;
2128 struct kcqe *cqes[1];
2129
2130 memset(&kcqe, 0, sizeof(kcqe));
2131 kcqe.pg_host_opaque = req->pg_host_opaque;
2132 kcqe.pg_cid = req->pg_cid;
2133 kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2134 cqes[0] = (struct kcqe *) &kcqe;
2135 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2136 return 0;
2137 }
2138
2139 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2140 {
2141 struct fcoe_kwqe_stat *req;
2142 struct fcoe_stat_ramrod_params *fcoe_stat;
2143 union l5cm_specific_data l5_data;
2144 struct cnic_local *cp = dev->cnic_priv;
2145 int ret;
2146 u32 cid;
2147
2148 req = (struct fcoe_kwqe_stat *) kwqe;
2149 cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2150
2151 fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2152 if (!fcoe_stat)
2153 return -ENOMEM;
2154
2155 memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2156 memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2157
2158 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT, cid,
2159 FCOE_CONNECTION_TYPE, &l5_data);
2160 return ret;
2161 }
2162
2163 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2164 u32 num, int *work)
2165 {
2166 int ret;
2167 struct cnic_local *cp = dev->cnic_priv;
2168 u32 cid;
2169 struct fcoe_init_ramrod_params *fcoe_init;
2170 struct fcoe_kwqe_init1 *req1;
2171 struct fcoe_kwqe_init2 *req2;
2172 struct fcoe_kwqe_init3 *req3;
2173 union l5cm_specific_data l5_data;
2174
2175 if (num < 3) {
2176 *work = num;
2177 return -EINVAL;
2178 }
2179 req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2180 req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2181 req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2182 if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2183 *work = 1;
2184 return -EINVAL;
2185 }
2186 if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2187 *work = 2;
2188 return -EINVAL;
2189 }
2190
2191 if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2192 netdev_err(dev->netdev, "fcoe_init size too big\n");
2193 return -ENOMEM;
2194 }
2195 fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2196 if (!fcoe_init)
2197 return -ENOMEM;
2198
2199 memset(fcoe_init, 0, sizeof(*fcoe_init));
2200 memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2201 memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2202 memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2203 fcoe_init->eq_addr.lo = cp->kcq2.dma.pg_map_arr[0] & 0xffffffff;
2204 fcoe_init->eq_addr.hi = (u64) cp->kcq2.dma.pg_map_arr[0] >> 32;
2205 fcoe_init->eq_next_page_addr.lo =
2206 cp->kcq2.dma.pg_map_arr[1] & 0xffffffff;
2207 fcoe_init->eq_next_page_addr.hi =
2208 (u64) cp->kcq2.dma.pg_map_arr[1] >> 32;
2209
2210 fcoe_init->sb_num = cp->status_blk_num;
2211 fcoe_init->eq_prod = MAX_KCQ_IDX;
2212 fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2213 cp->kcq2.sw_prod_idx = 0;
2214
2215 cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2216 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT, cid,
2217 FCOE_CONNECTION_TYPE, &l5_data);
2218 *work = 3;
2219 return ret;
2220 }
2221
2222 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2223 u32 num, int *work)
2224 {
2225 int ret = 0;
2226 u32 cid = -1, l5_cid;
2227 struct cnic_local *cp = dev->cnic_priv;
2228 struct fcoe_kwqe_conn_offload1 *req1;
2229 struct fcoe_kwqe_conn_offload2 *req2;
2230 struct fcoe_kwqe_conn_offload3 *req3;
2231 struct fcoe_kwqe_conn_offload4 *req4;
2232 struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2233 struct cnic_context *ctx;
2234 struct fcoe_context *fctx;
2235 struct regpair ctx_addr;
2236 union l5cm_specific_data l5_data;
2237 struct fcoe_kcqe kcqe;
2238 struct kcqe *cqes[1];
2239
2240 if (num < 4) {
2241 *work = num;
2242 return -EINVAL;
2243 }
2244 req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2245 req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2246 req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2247 req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2248
2249 *work = 4;
2250
2251 l5_cid = req1->fcoe_conn_id;
2252 if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2253 goto err_reply;
2254
2255 l5_cid += BNX2X_FCOE_L5_CID_BASE;
2256
2257 ctx = &cp->ctx_tbl[l5_cid];
2258 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2259 goto err_reply;
2260
2261 ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2262 if (ret) {
2263 ret = 0;
2264 goto err_reply;
2265 }
2266 cid = ctx->cid;
2267
2268 fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2269 if (fctx) {
2270 u32 hw_cid = BNX2X_HW_CID(cp, cid);
2271 u32 val;
2272
2273 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2274 FCOE_CONNECTION_TYPE);
2275 fctx->xstorm_ag_context.cdu_reserved = val;
2276 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2277 FCOE_CONNECTION_TYPE);
2278 fctx->ustorm_ag_context.cdu_usage = val;
2279 }
2280 if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2281 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2282 goto err_reply;
2283 }
2284 fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2285 if (!fcoe_offload)
2286 goto err_reply;
2287
2288 memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2289 memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2290 memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2291 memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2292 memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2293
2294 cid = BNX2X_HW_CID(cp, cid);
2295 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2296 FCOE_CONNECTION_TYPE, &l5_data);
2297 if (!ret)
2298 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2299
2300 return ret;
2301
2302 err_reply:
2303 if (cid != -1)
2304 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2305
2306 memset(&kcqe, 0, sizeof(kcqe));
2307 kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2308 kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2309 kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2310
2311 cqes[0] = (struct kcqe *) &kcqe;
2312 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2313 return ret;
2314 }
2315
2316 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2317 {
2318 struct fcoe_kwqe_conn_enable_disable *req;
2319 struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2320 union l5cm_specific_data l5_data;
2321 int ret;
2322 u32 cid, l5_cid;
2323 struct cnic_local *cp = dev->cnic_priv;
2324
2325 req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2326 cid = req->context_id;
2327 l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2328
2329 if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2330 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2331 return -ENOMEM;
2332 }
2333 fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2334 if (!fcoe_enable)
2335 return -ENOMEM;
2336
2337 memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2338 memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2339 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2340 FCOE_CONNECTION_TYPE, &l5_data);
2341 return ret;
2342 }
2343
2344 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2345 {
2346 struct fcoe_kwqe_conn_enable_disable *req;
2347 struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2348 union l5cm_specific_data l5_data;
2349 int ret;
2350 u32 cid, l5_cid;
2351 struct cnic_local *cp = dev->cnic_priv;
2352
2353 req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2354 cid = req->context_id;
2355 l5_cid = req->conn_id;
2356 if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2357 return -EINVAL;
2358
2359 l5_cid += BNX2X_FCOE_L5_CID_BASE;
2360
2361 if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2362 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2363 return -ENOMEM;
2364 }
2365 fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2366 if (!fcoe_disable)
2367 return -ENOMEM;
2368
2369 memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2370 memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2371 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2372 FCOE_CONNECTION_TYPE, &l5_data);
2373 return ret;
2374 }
2375
2376 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2377 {
2378 struct fcoe_kwqe_conn_destroy *req;
2379 union l5cm_specific_data l5_data;
2380 int ret;
2381 u32 cid, l5_cid;
2382 struct cnic_local *cp = dev->cnic_priv;
2383 struct cnic_context *ctx;
2384 struct fcoe_kcqe kcqe;
2385 struct kcqe *cqes[1];
2386
2387 req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2388 cid = req->context_id;
2389 l5_cid = req->conn_id;
2390 if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2391 return -EINVAL;
2392
2393 l5_cid += BNX2X_FCOE_L5_CID_BASE;
2394
2395 ctx = &cp->ctx_tbl[l5_cid];
2396
2397 init_waitqueue_head(&ctx->waitq);
2398 ctx->wait_cond = 0;
2399
2400 memset(&l5_data, 0, sizeof(l5_data));
2401 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2402 FCOE_CONNECTION_TYPE, &l5_data);
2403 if (ret == 0) {
2404 wait_event(ctx->waitq, ctx->wait_cond);
2405 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2406 queue_delayed_work(cnic_wq, &cp->delete_task,
2407 msecs_to_jiffies(2000));
2408 }
2409
2410 memset(&kcqe, 0, sizeof(kcqe));
2411 kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2412 kcqe.fcoe_conn_id = req->conn_id;
2413 kcqe.fcoe_conn_context_id = cid;
2414
2415 cqes[0] = (struct kcqe *) &kcqe;
2416 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2417 return ret;
2418 }
2419
2420 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2421 {
2422 struct fcoe_kwqe_destroy *req;
2423 union l5cm_specific_data l5_data;
2424 struct cnic_local *cp = dev->cnic_priv;
2425 int ret;
2426 u32 cid;
2427
2428 req = (struct fcoe_kwqe_destroy *) kwqe;
2429 cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2430
2431 memset(&l5_data, 0, sizeof(l5_data));
2432 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY, cid,
2433 FCOE_CONNECTION_TYPE, &l5_data);
2434 return ret;
2435 }
2436
2437 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2438 struct kwqe *wqes[], u32 num_wqes)
2439 {
2440 int i, work, ret;
2441 u32 opcode;
2442 struct kwqe *kwqe;
2443
2444 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2445 return -EAGAIN; /* bnx2 is down */
2446
2447 for (i = 0; i < num_wqes; ) {
2448 kwqe = wqes[i];
2449 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2450 work = 1;
2451
2452 switch (opcode) {
2453 case ISCSI_KWQE_OPCODE_INIT1:
2454 ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2455 break;
2456 case ISCSI_KWQE_OPCODE_INIT2:
2457 ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2458 break;
2459 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2460 ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2461 num_wqes - i, &work);
2462 break;
2463 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2464 ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2465 break;
2466 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2467 ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2468 break;
2469 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2470 ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2471 &work);
2472 break;
2473 case L4_KWQE_OPCODE_VALUE_CLOSE:
2474 ret = cnic_bnx2x_close(dev, kwqe);
2475 break;
2476 case L4_KWQE_OPCODE_VALUE_RESET:
2477 ret = cnic_bnx2x_reset(dev, kwqe);
2478 break;
2479 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2480 ret = cnic_bnx2x_offload_pg(dev, kwqe);
2481 break;
2482 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2483 ret = cnic_bnx2x_update_pg(dev, kwqe);
2484 break;
2485 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2486 ret = 0;
2487 break;
2488 default:
2489 ret = 0;
2490 netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2491 opcode);
2492 break;
2493 }
2494 if (ret < 0)
2495 netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2496 opcode);
2497 i += work;
2498 }
2499 return 0;
2500 }
2501
2502 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2503 struct kwqe *wqes[], u32 num_wqes)
2504 {
2505 struct cnic_local *cp = dev->cnic_priv;
2506 int i, work, ret;
2507 u32 opcode;
2508 struct kwqe *kwqe;
2509
2510 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2511 return -EAGAIN; /* bnx2 is down */
2512
2513 if (BNX2X_CHIP_NUM(cp->chip_id) == BNX2X_CHIP_NUM_57710)
2514 return -EINVAL;
2515
2516 for (i = 0; i < num_wqes; ) {
2517 kwqe = wqes[i];
2518 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2519 work = 1;
2520
2521 switch (opcode) {
2522 case FCOE_KWQE_OPCODE_INIT1:
2523 ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2524 num_wqes - i, &work);
2525 break;
2526 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2527 ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2528 num_wqes - i, &work);
2529 break;
2530 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2531 ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2532 break;
2533 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2534 ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2535 break;
2536 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2537 ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2538 break;
2539 case FCOE_KWQE_OPCODE_DESTROY:
2540 ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2541 break;
2542 case FCOE_KWQE_OPCODE_STAT:
2543 ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2544 break;
2545 default:
2546 ret = 0;
2547 netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2548 opcode);
2549 break;
2550 }
2551 if (ret < 0)
2552 netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2553 opcode);
2554 i += work;
2555 }
2556 return 0;
2557 }
2558
2559 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2560 u32 num_wqes)
2561 {
2562 int ret = -EINVAL;
2563 u32 layer_code;
2564
2565 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2566 return -EAGAIN; /* bnx2x is down */
2567
2568 if (!num_wqes)
2569 return 0;
2570
2571 layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2572 switch (layer_code) {
2573 case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2574 case KWQE_FLAGS_LAYER_MASK_L4:
2575 case KWQE_FLAGS_LAYER_MASK_L2:
2576 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2577 break;
2578
2579 case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2580 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2581 break;
2582 }
2583 return ret;
2584 }
2585
2586 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2587 {
2588 if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2589 return KCQE_FLAGS_LAYER_MASK_L4;
2590
2591 return opflag & KCQE_FLAGS_LAYER_MASK;
2592 }
2593
2594 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2595 {
2596 struct cnic_local *cp = dev->cnic_priv;
2597 int i, j, comp = 0;
2598
2599 i = 0;
2600 j = 1;
2601 while (num_cqes) {
2602 struct cnic_ulp_ops *ulp_ops;
2603 int ulp_type;
2604 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2605 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2606
2607 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2608 comp++;
2609
2610 while (j < num_cqes) {
2611 u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2612
2613 if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2614 break;
2615
2616 if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2617 comp++;
2618 j++;
2619 }
2620
2621 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2622 ulp_type = CNIC_ULP_RDMA;
2623 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2624 ulp_type = CNIC_ULP_ISCSI;
2625 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2626 ulp_type = CNIC_ULP_FCOE;
2627 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2628 ulp_type = CNIC_ULP_L4;
2629 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2630 goto end;
2631 else {
2632 netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2633 kcqe_op_flag);
2634 goto end;
2635 }
2636
2637 rcu_read_lock();
2638 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2639 if (likely(ulp_ops)) {
2640 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2641 cp->completed_kcq + i, j);
2642 }
2643 rcu_read_unlock();
2644 end:
2645 num_cqes -= j;
2646 i += j;
2647 j = 1;
2648 }
2649 if (unlikely(comp))
2650 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2651 }
2652
2653 static u16 cnic_bnx2_next_idx(u16 idx)
2654 {
2655 return idx + 1;
2656 }
2657
2658 static u16 cnic_bnx2_hw_idx(u16 idx)
2659 {
2660 return idx;
2661 }
2662
2663 static u16 cnic_bnx2x_next_idx(u16 idx)
2664 {
2665 idx++;
2666 if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2667 idx++;
2668
2669 return idx;
2670 }
2671
2672 static u16 cnic_bnx2x_hw_idx(u16 idx)
2673 {
2674 if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2675 idx++;
2676 return idx;
2677 }
2678
2679 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2680 {
2681 struct cnic_local *cp = dev->cnic_priv;
2682 u16 i, ri, hw_prod, last;
2683 struct kcqe *kcqe;
2684 int kcqe_cnt = 0, last_cnt = 0;
2685
2686 i = ri = last = info->sw_prod_idx;
2687 ri &= MAX_KCQ_IDX;
2688 hw_prod = *info->hw_prod_idx_ptr;
2689 hw_prod = cp->hw_idx(hw_prod);
2690
2691 while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2692 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2693 cp->completed_kcq[kcqe_cnt++] = kcqe;
2694 i = cp->next_idx(i);
2695 ri = i & MAX_KCQ_IDX;
2696 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2697 last_cnt = kcqe_cnt;
2698 last = i;
2699 }
2700 }
2701
2702 info->sw_prod_idx = last;
2703 return last_cnt;
2704 }
2705
2706 static int cnic_l2_completion(struct cnic_local *cp)
2707 {
2708 u16 hw_cons, sw_cons;
2709 struct cnic_uio_dev *udev = cp->udev;
2710 union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2711 (udev->l2_ring + (2 * BCM_PAGE_SIZE));
2712 u32 cmd;
2713 int comp = 0;
2714
2715 if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2716 return 0;
2717
2718 hw_cons = *cp->rx_cons_ptr;
2719 if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2720 hw_cons++;
2721
2722 sw_cons = cp->rx_cons;
2723 while (sw_cons != hw_cons) {
2724 u8 cqe_fp_flags;
2725
2726 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2727 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2728 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2729 cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2730 cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2731 if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2732 cmd == RAMROD_CMD_ID_ETH_HALT)
2733 comp++;
2734 }
2735 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2736 }
2737 return comp;
2738 }
2739
2740 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2741 {
2742 u16 rx_cons, tx_cons;
2743 int comp = 0;
2744
2745 if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2746 return;
2747
2748 rx_cons = *cp->rx_cons_ptr;
2749 tx_cons = *cp->tx_cons_ptr;
2750 if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2751 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2752 comp = cnic_l2_completion(cp);
2753
2754 cp->tx_cons = tx_cons;
2755 cp->rx_cons = rx_cons;
2756
2757 if (cp->udev)
2758 uio_event_notify(&cp->udev->cnic_uinfo);
2759 }
2760 if (comp)
2761 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2762 }
2763
2764 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2765 {
2766 struct cnic_local *cp = dev->cnic_priv;
2767 u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2768 int kcqe_cnt;
2769
2770 /* status block index must be read before reading other fields */
2771 rmb();
2772 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2773
2774 while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2775
2776 service_kcqes(dev, kcqe_cnt);
2777
2778 /* Tell compiler that status_blk fields can change. */
2779 barrier();
2780 if (status_idx != *cp->kcq1.status_idx_ptr) {
2781 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2782 /* status block index must be read first */
2783 rmb();
2784 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2785 } else
2786 break;
2787 }
2788
2789 CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2790
2791 cnic_chk_pkt_rings(cp);
2792
2793 return status_idx;
2794 }
2795
2796 static int cnic_service_bnx2(void *data, void *status_blk)
2797 {
2798 struct cnic_dev *dev = data;
2799
2800 if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2801 struct status_block *sblk = status_blk;
2802
2803 return sblk->status_idx;
2804 }
2805
2806 return cnic_service_bnx2_queues(dev);
2807 }
2808
2809 static void cnic_service_bnx2_msix(unsigned long data)
2810 {
2811 struct cnic_dev *dev = (struct cnic_dev *) data;
2812 struct cnic_local *cp = dev->cnic_priv;
2813
2814 cp->last_status_idx = cnic_service_bnx2_queues(dev);
2815
2816 CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2817 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2818 }
2819
2820 static void cnic_doirq(struct cnic_dev *dev)
2821 {
2822 struct cnic_local *cp = dev->cnic_priv;
2823
2824 if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2825 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
2826
2827 prefetch(cp->status_blk.gen);
2828 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2829
2830 tasklet_schedule(&cp->cnic_irq_task);
2831 }
2832 }
2833
2834 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2835 {
2836 struct cnic_dev *dev = dev_instance;
2837 struct cnic_local *cp = dev->cnic_priv;
2838
2839 if (cp->ack_int)
2840 cp->ack_int(dev);
2841
2842 cnic_doirq(dev);
2843
2844 return IRQ_HANDLED;
2845 }
2846
2847 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2848 u16 index, u8 op, u8 update)
2849 {
2850 struct cnic_local *cp = dev->cnic_priv;
2851 u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2852 COMMAND_REG_INT_ACK);
2853 struct igu_ack_register igu_ack;
2854
2855 igu_ack.status_block_index = index;
2856 igu_ack.sb_id_and_flags =
2857 ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2858 (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2859 (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2860 (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2861
2862 CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2863 }
2864
2865 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
2866 u16 index, u8 op, u8 update)
2867 {
2868 struct igu_regular cmd_data;
2869 u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
2870
2871 cmd_data.sb_id_and_flags =
2872 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
2873 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
2874 (update << IGU_REGULAR_BUPDATE_SHIFT) |
2875 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
2876
2877
2878 CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
2879 }
2880
2881 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2882 {
2883 struct cnic_local *cp = dev->cnic_priv;
2884
2885 cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
2886 IGU_INT_DISABLE, 0);
2887 }
2888
2889 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
2890 {
2891 struct cnic_local *cp = dev->cnic_priv;
2892
2893 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
2894 IGU_INT_DISABLE, 0);
2895 }
2896
2897 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
2898 {
2899 u32 last_status = *info->status_idx_ptr;
2900 int kcqe_cnt;
2901
2902 /* status block index must be read before reading the KCQ */
2903 rmb();
2904 while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
2905
2906 service_kcqes(dev, kcqe_cnt);
2907
2908 /* Tell compiler that sblk fields can change. */
2909 barrier();
2910 if (last_status == *info->status_idx_ptr)
2911 break;
2912
2913 last_status = *info->status_idx_ptr;
2914 /* status block index must be read before reading the KCQ */
2915 rmb();
2916 }
2917 return last_status;
2918 }
2919
2920 static void cnic_service_bnx2x_bh(unsigned long data)
2921 {
2922 struct cnic_dev *dev = (struct cnic_dev *) data;
2923 struct cnic_local *cp = dev->cnic_priv;
2924 u32 status_idx, new_status_idx;
2925
2926 if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2927 return;
2928
2929 while (1) {
2930 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
2931
2932 CNIC_WR16(dev, cp->kcq1.io_addr,
2933 cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
2934
2935 if (!BNX2X_CHIP_IS_E2(cp->chip_id)) {
2936 cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
2937 status_idx, IGU_INT_ENABLE, 1);
2938 break;
2939 }
2940
2941 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
2942
2943 if (new_status_idx != status_idx)
2944 continue;
2945
2946 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
2947 MAX_KCQ_IDX);
2948
2949 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
2950 status_idx, IGU_INT_ENABLE, 1);
2951
2952 break;
2953 }
2954 }
2955
2956 static int cnic_service_bnx2x(void *data, void *status_blk)
2957 {
2958 struct cnic_dev *dev = data;
2959 struct cnic_local *cp = dev->cnic_priv;
2960
2961 if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
2962 cnic_doirq(dev);
2963
2964 cnic_chk_pkt_rings(cp);
2965
2966 return 0;
2967 }
2968
2969 static void cnic_ulp_stop(struct cnic_dev *dev)
2970 {
2971 struct cnic_local *cp = dev->cnic_priv;
2972 int if_type;
2973
2974 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2975
2976 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2977 struct cnic_ulp_ops *ulp_ops;
2978
2979 mutex_lock(&cnic_lock);
2980 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
2981 lockdep_is_held(&cnic_lock));
2982 if (!ulp_ops) {
2983 mutex_unlock(&cnic_lock);
2984 continue;
2985 }
2986 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2987 mutex_unlock(&cnic_lock);
2988
2989 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2990 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2991
2992 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2993 }
2994 }
2995
2996 static void cnic_ulp_start(struct cnic_dev *dev)
2997 {
2998 struct cnic_local *cp = dev->cnic_priv;
2999 int if_type;
3000
3001 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3002 struct cnic_ulp_ops *ulp_ops;
3003
3004 mutex_lock(&cnic_lock);
3005 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3006 lockdep_is_held(&cnic_lock));
3007 if (!ulp_ops || !ulp_ops->cnic_start) {
3008 mutex_unlock(&cnic_lock);
3009 continue;
3010 }
3011 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3012 mutex_unlock(&cnic_lock);
3013
3014 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3015 ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3016
3017 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3018 }
3019 }
3020
3021 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3022 {
3023 struct cnic_dev *dev = data;
3024
3025 switch (info->cmd) {
3026 case CNIC_CTL_STOP_CMD:
3027 cnic_hold(dev);
3028
3029 cnic_ulp_stop(dev);
3030 cnic_stop_hw(dev);
3031
3032 cnic_put(dev);
3033 break;
3034 case CNIC_CTL_START_CMD:
3035 cnic_hold(dev);
3036
3037 if (!cnic_start_hw(dev))
3038 cnic_ulp_start(dev);
3039
3040 cnic_put(dev);
3041 break;
3042 case CNIC_CTL_COMPLETION_CMD: {
3043 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
3044 u32 l5_cid;
3045 struct cnic_local *cp = dev->cnic_priv;
3046
3047 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3048 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3049
3050 ctx->wait_cond = 1;
3051 wake_up(&ctx->waitq);
3052 }
3053 break;
3054 }
3055 default:
3056 return -EINVAL;
3057 }
3058 return 0;
3059 }
3060
3061 static void cnic_ulp_init(struct cnic_dev *dev)
3062 {
3063 int i;
3064 struct cnic_local *cp = dev->cnic_priv;
3065
3066 for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3067 struct cnic_ulp_ops *ulp_ops;
3068
3069 mutex_lock(&cnic_lock);
3070 ulp_ops = cnic_ulp_tbl_prot(i);
3071 if (!ulp_ops || !ulp_ops->cnic_init) {
3072 mutex_unlock(&cnic_lock);
3073 continue;
3074 }
3075 ulp_get(ulp_ops);
3076 mutex_unlock(&cnic_lock);
3077
3078 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3079 ulp_ops->cnic_init(dev);
3080
3081 ulp_put(ulp_ops);
3082 }
3083 }
3084
3085 static void cnic_ulp_exit(struct cnic_dev *dev)
3086 {
3087 int i;
3088 struct cnic_local *cp = dev->cnic_priv;
3089
3090 for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3091 struct cnic_ulp_ops *ulp_ops;
3092
3093 mutex_lock(&cnic_lock);
3094 ulp_ops = cnic_ulp_tbl_prot(i);
3095 if (!ulp_ops || !ulp_ops->cnic_exit) {
3096 mutex_unlock(&cnic_lock);
3097 continue;
3098 }
3099 ulp_get(ulp_ops);
3100 mutex_unlock(&cnic_lock);
3101
3102 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3103 ulp_ops->cnic_exit(dev);
3104
3105 ulp_put(ulp_ops);
3106 }
3107 }
3108
3109 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3110 {
3111 struct cnic_dev *dev = csk->dev;
3112 struct l4_kwq_offload_pg *l4kwqe;
3113 struct kwqe *wqes[1];
3114
3115 l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3116 memset(l4kwqe, 0, sizeof(*l4kwqe));
3117 wqes[0] = (struct kwqe *) l4kwqe;
3118
3119 l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3120 l4kwqe->flags =
3121 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3122 l4kwqe->l2hdr_nbytes = ETH_HLEN;
3123
3124 l4kwqe->da0 = csk->ha[0];
3125 l4kwqe->da1 = csk->ha[1];
3126 l4kwqe->da2 = csk->ha[2];
3127 l4kwqe->da3 = csk->ha[3];
3128 l4kwqe->da4 = csk->ha[4];
3129 l4kwqe->da5 = csk->ha[5];
3130
3131 l4kwqe->sa0 = dev->mac_addr[0];
3132 l4kwqe->sa1 = dev->mac_addr[1];
3133 l4kwqe->sa2 = dev->mac_addr[2];
3134 l4kwqe->sa3 = dev->mac_addr[3];
3135 l4kwqe->sa4 = dev->mac_addr[4];
3136 l4kwqe->sa5 = dev->mac_addr[5];
3137
3138 l4kwqe->etype = ETH_P_IP;
3139 l4kwqe->ipid_start = DEF_IPID_START;
3140 l4kwqe->host_opaque = csk->l5_cid;
3141
3142 if (csk->vlan_id) {
3143 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3144 l4kwqe->vlan_tag = csk->vlan_id;
3145 l4kwqe->l2hdr_nbytes += 4;
3146 }
3147
3148 return dev->submit_kwqes(dev, wqes, 1);
3149 }
3150
3151 static int cnic_cm_update_pg(struct cnic_sock *csk)
3152 {
3153 struct cnic_dev *dev = csk->dev;
3154 struct l4_kwq_update_pg *l4kwqe;
3155 struct kwqe *wqes[1];
3156
3157 l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3158 memset(l4kwqe, 0, sizeof(*l4kwqe));
3159 wqes[0] = (struct kwqe *) l4kwqe;
3160
3161 l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3162 l4kwqe->flags =
3163 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3164 l4kwqe->pg_cid = csk->pg_cid;
3165
3166 l4kwqe->da0 = csk->ha[0];
3167 l4kwqe->da1 = csk->ha[1];
3168 l4kwqe->da2 = csk->ha[2];
3169 l4kwqe->da3 = csk->ha[3];
3170 l4kwqe->da4 = csk->ha[4];
3171 l4kwqe->da5 = csk->ha[5];
3172
3173 l4kwqe->pg_host_opaque = csk->l5_cid;
3174 l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3175
3176 return dev->submit_kwqes(dev, wqes, 1);
3177 }
3178
3179 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3180 {
3181 struct cnic_dev *dev = csk->dev;
3182 struct l4_kwq_upload *l4kwqe;
3183 struct kwqe *wqes[1];
3184
3185 l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3186 memset(l4kwqe, 0, sizeof(*l4kwqe));
3187 wqes[0] = (struct kwqe *) l4kwqe;
3188
3189 l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3190 l4kwqe->flags =
3191 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3192 l4kwqe->cid = csk->pg_cid;
3193
3194 return dev->submit_kwqes(dev, wqes, 1);
3195 }
3196
3197 static int cnic_cm_conn_req(struct cnic_sock *csk)
3198 {
3199 struct cnic_dev *dev = csk->dev;
3200 struct l4_kwq_connect_req1 *l4kwqe1;
3201 struct l4_kwq_connect_req2 *l4kwqe2;
3202 struct l4_kwq_connect_req3 *l4kwqe3;
3203 struct kwqe *wqes[3];
3204 u8 tcp_flags = 0;
3205 int num_wqes = 2;
3206
3207 l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3208 l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3209 l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3210 memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3211 memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3212 memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3213
3214 l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3215 l4kwqe3->flags =
3216 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3217 l4kwqe3->ka_timeout = csk->ka_timeout;
3218 l4kwqe3->ka_interval = csk->ka_interval;
3219 l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3220 l4kwqe3->tos = csk->tos;
3221 l4kwqe3->ttl = csk->ttl;
3222 l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3223 l4kwqe3->pmtu = csk->mtu;
3224 l4kwqe3->rcv_buf = csk->rcv_buf;
3225 l4kwqe3->snd_buf = csk->snd_buf;
3226 l4kwqe3->seed = csk->seed;
3227
3228 wqes[0] = (struct kwqe *) l4kwqe1;
3229 if (test_bit(SK_F_IPV6, &csk->flags)) {
3230 wqes[1] = (struct kwqe *) l4kwqe2;
3231 wqes[2] = (struct kwqe *) l4kwqe3;
3232 num_wqes = 3;
3233
3234 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3235 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3236 l4kwqe2->flags =
3237 L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3238 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3239 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3240 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3241 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3242 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3243 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3244 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3245 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3246 sizeof(struct tcphdr);
3247 } else {
3248 wqes[1] = (struct kwqe *) l4kwqe3;
3249 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3250 sizeof(struct tcphdr);
3251 }
3252
3253 l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3254 l4kwqe1->flags =
3255 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3256 L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3257 l4kwqe1->cid = csk->cid;
3258 l4kwqe1->pg_cid = csk->pg_cid;
3259 l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3260 l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3261 l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3262 l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3263 if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3264 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3265 if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3266 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3267 if (csk->tcp_flags & SK_TCP_NAGLE)
3268 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3269 if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3270 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3271 if (csk->tcp_flags & SK_TCP_SACK)
3272 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3273 if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3274 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3275
3276 l4kwqe1->tcp_flags = tcp_flags;
3277
3278 return dev->submit_kwqes(dev, wqes, num_wqes);
3279 }
3280
3281 static int cnic_cm_close_req(struct cnic_sock *csk)
3282 {
3283 struct cnic_dev *dev = csk->dev;
3284 struct l4_kwq_close_req *l4kwqe;
3285 struct kwqe *wqes[1];
3286
3287 l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3288 memset(l4kwqe, 0, sizeof(*l4kwqe));
3289 wqes[0] = (struct kwqe *) l4kwqe;
3290
3291 l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3292 l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3293 l4kwqe->cid = csk->cid;
3294
3295 return dev->submit_kwqes(dev, wqes, 1);
3296 }
3297
3298 static int cnic_cm_abort_req(struct cnic_sock *csk)
3299 {
3300 struct cnic_dev *dev = csk->dev;
3301 struct l4_kwq_reset_req *l4kwqe;
3302 struct kwqe *wqes[1];
3303
3304 l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3305 memset(l4kwqe, 0, sizeof(*l4kwqe));
3306 wqes[0] = (struct kwqe *) l4kwqe;
3307
3308 l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3309 l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3310 l4kwqe->cid = csk->cid;
3311
3312 return dev->submit_kwqes(dev, wqes, 1);
3313 }
3314
3315 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3316 u32 l5_cid, struct cnic_sock **csk, void *context)
3317 {
3318 struct cnic_local *cp = dev->cnic_priv;
3319 struct cnic_sock *csk1;
3320
3321 if (l5_cid >= MAX_CM_SK_TBL_SZ)
3322 return -EINVAL;
3323
3324 if (cp->ctx_tbl) {
3325 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3326
3327 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3328 return -EAGAIN;
3329 }
3330
3331 csk1 = &cp->csk_tbl[l5_cid];
3332 if (atomic_read(&csk1->ref_count))
3333 return -EAGAIN;
3334
3335 if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3336 return -EBUSY;
3337
3338 csk1->dev = dev;
3339 csk1->cid = cid;
3340 csk1->l5_cid = l5_cid;
3341 csk1->ulp_type = ulp_type;
3342 csk1->context = context;
3343
3344 csk1->ka_timeout = DEF_KA_TIMEOUT;
3345 csk1->ka_interval = DEF_KA_INTERVAL;
3346 csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3347 csk1->tos = DEF_TOS;
3348 csk1->ttl = DEF_TTL;
3349 csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3350 csk1->rcv_buf = DEF_RCV_BUF;
3351 csk1->snd_buf = DEF_SND_BUF;
3352 csk1->seed = DEF_SEED;
3353
3354 *csk = csk1;
3355 return 0;
3356 }
3357
3358 static void cnic_cm_cleanup(struct cnic_sock *csk)
3359 {
3360 if (csk->src_port) {
3361 struct cnic_dev *dev = csk->dev;
3362 struct cnic_local *cp = dev->cnic_priv;
3363
3364 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3365 csk->src_port = 0;
3366 }
3367 }
3368
3369 static void cnic_close_conn(struct cnic_sock *csk)
3370 {
3371 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3372 cnic_cm_upload_pg(csk);
3373 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3374 }
3375 cnic_cm_cleanup(csk);
3376 }
3377
3378 static int cnic_cm_destroy(struct cnic_sock *csk)
3379 {
3380 if (!cnic_in_use(csk))
3381 return -EINVAL;
3382
3383 csk_hold(csk);
3384 clear_bit(SK_F_INUSE, &csk->flags);
3385 smp_mb__after_clear_bit();
3386 while (atomic_read(&csk->ref_count) != 1)
3387 msleep(1);
3388 cnic_cm_cleanup(csk);
3389
3390 csk->flags = 0;
3391 csk_put(csk);
3392 return 0;
3393 }
3394
3395 static inline u16 cnic_get_vlan(struct net_device *dev,
3396 struct net_device **vlan_dev)
3397 {
3398 if (dev->priv_flags & IFF_802_1Q_VLAN) {
3399 *vlan_dev = vlan_dev_real_dev(dev);
3400 return vlan_dev_vlan_id(dev);
3401 }
3402 *vlan_dev = dev;
3403 return 0;
3404 }
3405
3406 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3407 struct dst_entry **dst)
3408 {
3409 #if defined(CONFIG_INET)
3410 struct rtable *rt;
3411
3412 rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3413 if (!IS_ERR(rt)) {
3414 *dst = &rt->dst;
3415 return 0;
3416 }
3417 return PTR_ERR(rt);
3418 #else
3419 return -ENETUNREACH;
3420 #endif
3421 }
3422
3423 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3424 struct dst_entry **dst)
3425 {
3426 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3427 struct flowi6 fl6;
3428
3429 memset(&fl6, 0, sizeof(fl6));
3430 ipv6_addr_copy(&fl6.daddr, &dst_addr->sin6_addr);
3431 if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3432 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3433
3434 *dst = ip6_route_output(&init_net, NULL, &fl6);
3435 if (*dst)
3436 return 0;
3437 #endif
3438
3439 return -ENETUNREACH;
3440 }
3441
3442 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3443 int ulp_type)
3444 {
3445 struct cnic_dev *dev = NULL;
3446 struct dst_entry *dst;
3447 struct net_device *netdev = NULL;
3448 int err = -ENETUNREACH;
3449
3450 if (dst_addr->sin_family == AF_INET)
3451 err = cnic_get_v4_route(dst_addr, &dst);
3452 else if (dst_addr->sin_family == AF_INET6) {
3453 struct sockaddr_in6 *dst_addr6 =
3454 (struct sockaddr_in6 *) dst_addr;
3455
3456 err = cnic_get_v6_route(dst_addr6, &dst);
3457 } else
3458 return NULL;
3459
3460 if (err)
3461 return NULL;
3462
3463 if (!dst->dev)
3464 goto done;
3465
3466 cnic_get_vlan(dst->dev, &netdev);
3467
3468 dev = cnic_from_netdev(netdev);
3469
3470 done:
3471 dst_release(dst);
3472 if (dev)
3473 cnic_put(dev);
3474 return dev;
3475 }
3476
3477 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3478 {
3479 struct cnic_dev *dev = csk->dev;
3480 struct cnic_local *cp = dev->cnic_priv;
3481
3482 return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3483 }
3484
3485 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3486 {
3487 struct cnic_dev *dev = csk->dev;
3488 struct cnic_local *cp = dev->cnic_priv;
3489 int is_v6, rc = 0;
3490 struct dst_entry *dst = NULL;
3491 struct net_device *realdev;
3492 __be16 local_port;
3493 u32 port_id;
3494
3495 if (saddr->local.v6.sin6_family == AF_INET6 &&
3496 saddr->remote.v6.sin6_family == AF_INET6)
3497 is_v6 = 1;
3498 else if (saddr->local.v4.sin_family == AF_INET &&
3499 saddr->remote.v4.sin_family == AF_INET)
3500 is_v6 = 0;
3501 else
3502 return -EINVAL;
3503
3504 clear_bit(SK_F_IPV6, &csk->flags);
3505
3506 if (is_v6) {
3507 set_bit(SK_F_IPV6, &csk->flags);
3508 cnic_get_v6_route(&saddr->remote.v6, &dst);
3509
3510 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3511 sizeof(struct in6_addr));
3512 csk->dst_port = saddr->remote.v6.sin6_port;
3513 local_port = saddr->local.v6.sin6_port;
3514
3515 } else {
3516 cnic_get_v4_route(&saddr->remote.v4, &dst);
3517
3518 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3519 csk->dst_port = saddr->remote.v4.sin_port;
3520 local_port = saddr->local.v4.sin_port;
3521 }
3522
3523 csk->vlan_id = 0;
3524 csk->mtu = dev->netdev->mtu;
3525 if (dst && dst->dev) {
3526 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3527 if (realdev == dev->netdev) {
3528 csk->vlan_id = vlan;
3529 csk->mtu = dst_mtu(dst);
3530 }
3531 }
3532
3533 port_id = be16_to_cpu(local_port);
3534 if (port_id >= CNIC_LOCAL_PORT_MIN &&
3535 port_id < CNIC_LOCAL_PORT_MAX) {
3536 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3537 port_id = 0;
3538 } else
3539 port_id = 0;
3540
3541 if (!port_id) {
3542 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3543 if (port_id == -1) {
3544 rc = -ENOMEM;
3545 goto err_out;
3546 }
3547 local_port = cpu_to_be16(port_id);
3548 }
3549 csk->src_port = local_port;
3550
3551 err_out:
3552 dst_release(dst);
3553 return rc;
3554 }
3555
3556 static void cnic_init_csk_state(struct cnic_sock *csk)
3557 {
3558 csk->state = 0;
3559 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3560 clear_bit(SK_F_CLOSING, &csk->flags);
3561 }
3562
3563 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3564 {
3565 int err = 0;
3566
3567 if (!cnic_in_use(csk))
3568 return -EINVAL;
3569
3570 if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3571 return -EINVAL;
3572
3573 cnic_init_csk_state(csk);
3574
3575 err = cnic_get_route(csk, saddr);
3576 if (err)
3577 goto err_out;
3578
3579 err = cnic_resolve_addr(csk, saddr);
3580 if (!err)
3581 return 0;
3582
3583 err_out:
3584 clear_bit(SK_F_CONNECT_START, &csk->flags);
3585 return err;
3586 }
3587
3588 static int cnic_cm_abort(struct cnic_sock *csk)
3589 {
3590 struct cnic_local *cp = csk->dev->cnic_priv;
3591 u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3592
3593 if (!cnic_in_use(csk))
3594 return -EINVAL;
3595
3596 if (cnic_abort_prep(csk))
3597 return cnic_cm_abort_req(csk);
3598
3599 /* Getting here means that we haven't started connect, or
3600 * connect was not successful.
3601 */
3602
3603 cp->close_conn(csk, opcode);
3604 if (csk->state != opcode)
3605 return -EALREADY;
3606
3607 return 0;
3608 }
3609
3610 static int cnic_cm_close(struct cnic_sock *csk)
3611 {
3612 if (!cnic_in_use(csk))
3613 return -EINVAL;
3614
3615 if (cnic_close_prep(csk)) {
3616 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3617 return cnic_cm_close_req(csk);
3618 } else {
3619 return -EALREADY;
3620 }
3621 return 0;
3622 }
3623
3624 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3625 u8 opcode)
3626 {
3627 struct cnic_ulp_ops *ulp_ops;
3628 int ulp_type = csk->ulp_type;
3629
3630 rcu_read_lock();
3631 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3632 if (ulp_ops) {
3633 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3634 ulp_ops->cm_connect_complete(csk);
3635 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3636 ulp_ops->cm_close_complete(csk);
3637 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3638 ulp_ops->cm_remote_abort(csk);
3639 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3640 ulp_ops->cm_abort_complete(csk);
3641 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3642 ulp_ops->cm_remote_close(csk);
3643 }
3644 rcu_read_unlock();
3645 }
3646
3647 static int cnic_cm_set_pg(struct cnic_sock *csk)
3648 {
3649 if (cnic_offld_prep(csk)) {
3650 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3651 cnic_cm_update_pg(csk);
3652 else
3653 cnic_cm_offload_pg(csk);
3654 }
3655 return 0;
3656 }
3657
3658 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3659 {
3660 struct cnic_local *cp = dev->cnic_priv;
3661 u32 l5_cid = kcqe->pg_host_opaque;
3662 u8 opcode = kcqe->op_code;
3663 struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3664
3665 csk_hold(csk);
3666 if (!cnic_in_use(csk))
3667 goto done;
3668
3669 if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3670 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3671 goto done;
3672 }
3673 /* Possible PG kcqe status: SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3674 if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3675 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3676 cnic_cm_upcall(cp, csk,
3677 L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3678 goto done;
3679 }
3680
3681 csk->pg_cid = kcqe->pg_cid;
3682 set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3683 cnic_cm_conn_req(csk);
3684
3685 done:
3686 csk_put(csk);
3687 }
3688
3689 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3690 {
3691 struct cnic_local *cp = dev->cnic_priv;
3692 struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3693 u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3694 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3695
3696 ctx->timestamp = jiffies;
3697 ctx->wait_cond = 1;
3698 wake_up(&ctx->waitq);
3699 }
3700
3701 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3702 {
3703 struct cnic_local *cp = dev->cnic_priv;
3704 struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3705 u8 opcode = l4kcqe->op_code;
3706 u32 l5_cid;
3707 struct cnic_sock *csk;
3708
3709 if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3710 cnic_process_fcoe_term_conn(dev, kcqe);
3711 return;
3712 }
3713 if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3714 opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3715 cnic_cm_process_offld_pg(dev, l4kcqe);
3716 return;
3717 }
3718
3719 l5_cid = l4kcqe->conn_id;
3720 if (opcode & 0x80)
3721 l5_cid = l4kcqe->cid;
3722 if (l5_cid >= MAX_CM_SK_TBL_SZ)
3723 return;
3724
3725 csk = &cp->csk_tbl[l5_cid];
3726 csk_hold(csk);
3727
3728 if (!cnic_in_use(csk)) {
3729 csk_put(csk);
3730 return;
3731 }
3732
3733 switch (opcode) {
3734 case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3735 if (l4kcqe->status != 0) {
3736 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3737 cnic_cm_upcall(cp, csk,
3738 L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3739 }
3740 break;
3741 case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3742 if (l4kcqe->status == 0)
3743 set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3744
3745 smp_mb__before_clear_bit();
3746 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3747 cnic_cm_upcall(cp, csk, opcode);
3748 break;
3749
3750 case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3751 case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3752 case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3753 case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3754 case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3755 cp->close_conn(csk, opcode);
3756 break;
3757
3758 case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3759 cnic_cm_upcall(cp, csk, opcode);
3760 break;
3761 }
3762 csk_put(csk);
3763 }
3764
3765 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3766 {
3767 struct cnic_dev *dev = data;
3768 int i;
3769
3770 for (i = 0; i < num; i++)
3771 cnic_cm_process_kcqe(dev, kcqe[i]);
3772 }
3773
3774 static struct cnic_ulp_ops cm_ulp_ops = {
3775 .indicate_kcqes = cnic_cm_indicate_kcqe,
3776 };
3777
3778 static void cnic_cm_free_mem(struct cnic_dev *dev)
3779 {
3780 struct cnic_local *cp = dev->cnic_priv;
3781
3782 kfree(cp->csk_tbl);
3783 cp->csk_tbl = NULL;
3784 cnic_free_id_tbl(&cp->csk_port_tbl);
3785 }
3786
3787 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3788 {
3789 struct cnic_local *cp = dev->cnic_priv;
3790
3791 cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3792 GFP_KERNEL);
3793 if (!cp->csk_tbl)
3794 return -ENOMEM;
3795
3796 if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3797 CNIC_LOCAL_PORT_MIN)) {
3798 cnic_cm_free_mem(dev);
3799 return -ENOMEM;
3800 }
3801 return 0;
3802 }
3803
3804 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3805 {
3806 if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
3807 /* Unsolicited RESET_COMP or RESET_RECEIVED */
3808 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
3809 csk->state = opcode;
3810 }
3811
3812 /* 1. If event opcode matches the expected event in csk->state
3813 * 2. If the expected event is CLOSE_COMP, we accept any event
3814 * 3. If the expected event is 0, meaning the connection was never
3815 * never established, we accept the opcode from cm_abort.
3816 */
3817 if (opcode == csk->state || csk->state == 0 ||
3818 csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) {
3819 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
3820 if (csk->state == 0)
3821 csk->state = opcode;
3822 return 1;
3823 }
3824 }
3825 return 0;
3826 }
3827
3828 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3829 {
3830 struct cnic_dev *dev = csk->dev;
3831 struct cnic_local *cp = dev->cnic_priv;
3832
3833 if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
3834 cnic_cm_upcall(cp, csk, opcode);
3835 return;
3836 }
3837
3838 clear_bit(SK_F_CONNECT_START, &csk->flags);
3839 cnic_close_conn(csk);
3840 csk->state = opcode;
3841 cnic_cm_upcall(cp, csk, opcode);
3842 }
3843
3844 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3845 {
3846 }
3847
3848 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3849 {
3850 u32 seed;
3851
3852 get_random_bytes(&seed, 4);
3853 cnic_ctx_wr(dev, 45, 0, seed);
3854 return 0;
3855 }
3856
3857 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3858 {
3859 struct cnic_dev *dev = csk->dev;
3860 struct cnic_local *cp = dev->cnic_priv;
3861 struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3862 union l5cm_specific_data l5_data;
3863 u32 cmd = 0;
3864 int close_complete = 0;
3865
3866 switch (opcode) {
3867 case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3868 case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3869 case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3870 if (cnic_ready_to_close(csk, opcode)) {
3871 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3872 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3873 else
3874 close_complete = 1;
3875 }
3876 break;
3877 case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3878 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3879 break;
3880 case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3881 close_complete = 1;
3882 break;
3883 }
3884 if (cmd) {
3885 memset(&l5_data, 0, sizeof(l5_data));
3886
3887 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3888 &l5_data);
3889 } else if (close_complete) {
3890 ctx->timestamp = jiffies;
3891 cnic_close_conn(csk);
3892 cnic_cm_upcall(cp, csk, csk->state);
3893 }
3894 }
3895
3896 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3897 {
3898 struct cnic_local *cp = dev->cnic_priv;
3899 int i;
3900
3901 if (!cp->ctx_tbl)
3902 return;
3903
3904 if (!netif_running(dev->netdev))
3905 return;
3906
3907 for (i = 0; i < cp->max_cid_space; i++) {
3908 struct cnic_context *ctx = &cp->ctx_tbl[i];
3909
3910 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3911 msleep(10);
3912
3913 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3914 netdev_warn(dev->netdev, "CID %x not deleted\n",
3915 ctx->cid);
3916 }
3917
3918 cancel_delayed_work(&cp->delete_task);
3919 flush_workqueue(cnic_wq);
3920
3921 if (atomic_read(&cp->iscsi_conn) != 0)
3922 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
3923 atomic_read(&cp->iscsi_conn));
3924 }
3925
3926 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3927 {
3928 struct cnic_local *cp = dev->cnic_priv;
3929 u32 pfid = cp->pfid;
3930 u32 port = CNIC_PORT(cp);
3931
3932 cnic_init_bnx2x_mac(dev);
3933 cnic_bnx2x_set_tcp_timestamp(dev, 1);
3934
3935 CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3936 XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
3937
3938 CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3939 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
3940 CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3941 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
3942 DEF_MAX_DA_COUNT);
3943
3944 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3945 XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
3946 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3947 XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
3948 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3949 XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
3950 CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3951 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
3952
3953 CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
3954 DEF_MAX_CWND);
3955 return 0;
3956 }
3957
3958 static void cnic_delete_task(struct work_struct *work)
3959 {
3960 struct cnic_local *cp;
3961 struct cnic_dev *dev;
3962 u32 i;
3963 int need_resched = 0;
3964
3965 cp = container_of(work, struct cnic_local, delete_task.work);
3966 dev = cp->dev;
3967
3968 for (i = 0; i < cp->max_cid_space; i++) {
3969 struct cnic_context *ctx = &cp->ctx_tbl[i];
3970
3971 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
3972 !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3973 continue;
3974
3975 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
3976 need_resched = 1;
3977 continue;
3978 }
3979
3980 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3981 continue;
3982
3983 cnic_bnx2x_destroy_ramrod(dev, i);
3984
3985 cnic_free_bnx2x_conn_resc(dev, i);
3986 if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
3987 atomic_dec(&cp->iscsi_conn);
3988
3989 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
3990 }
3991
3992 if (need_resched)
3993 queue_delayed_work(cnic_wq, &cp->delete_task,
3994 msecs_to_jiffies(10));
3995
3996 }
3997
3998 static int cnic_cm_open(struct cnic_dev *dev)
3999 {
4000 struct cnic_local *cp = dev->cnic_priv;
4001 int err;
4002
4003 err = cnic_cm_alloc_mem(dev);
4004 if (err)
4005 return err;
4006
4007 err = cp->start_cm(dev);
4008
4009 if (err)
4010 goto err_out;
4011
4012 INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4013
4014 dev->cm_create = cnic_cm_create;
4015 dev->cm_destroy = cnic_cm_destroy;
4016 dev->cm_connect = cnic_cm_connect;
4017 dev->cm_abort = cnic_cm_abort;
4018 dev->cm_close = cnic_cm_close;
4019 dev->cm_select_dev = cnic_cm_select_dev;
4020
4021 cp->ulp_handle[CNIC_ULP_L4] = dev;
4022 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4023 return 0;
4024
4025 err_out:
4026 cnic_cm_free_mem(dev);
4027 return err;
4028 }
4029
4030 static int cnic_cm_shutdown(struct cnic_dev *dev)
4031 {
4032 struct cnic_local *cp = dev->cnic_priv;
4033 int i;
4034
4035 cp->stop_cm(dev);
4036
4037 if (!cp->csk_tbl)
4038 return 0;
4039
4040 for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4041 struct cnic_sock *csk = &cp->csk_tbl[i];
4042
4043 clear_bit(SK_F_INUSE, &csk->flags);
4044 cnic_cm_cleanup(csk);
4045 }
4046 cnic_cm_free_mem(dev);
4047
4048 return 0;
4049 }
4050
4051 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4052 {
4053 u32 cid_addr;
4054 int i;
4055
4056 cid_addr = GET_CID_ADDR(cid);
4057
4058 for (i = 0; i < CTX_SIZE; i += 4)
4059 cnic_ctx_wr(dev, cid_addr, i, 0);
4060 }
4061
4062 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4063 {
4064 struct cnic_local *cp = dev->cnic_priv;
4065 int ret = 0, i;
4066 u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4067
4068 if (CHIP_NUM(cp) != CHIP_NUM_5709)
4069 return 0;
4070
4071 for (i = 0; i < cp->ctx_blks; i++) {
4072 int j;
4073 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4074 u32 val;
4075
4076 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
4077
4078 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4079 (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4080 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4081 (u64) cp->ctx_arr[i].mapping >> 32);
4082 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4083 BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4084 for (j = 0; j < 10; j++) {
4085
4086 val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4087 if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4088 break;
4089 udelay(5);
4090 }
4091 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4092 ret = -EBUSY;
4093 break;
4094 }
4095 }
4096 return ret;
4097 }
4098
4099 static void cnic_free_irq(struct cnic_dev *dev)
4100 {
4101 struct cnic_local *cp = dev->cnic_priv;
4102 struct cnic_eth_dev *ethdev = cp->ethdev;
4103
4104 if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4105 cp->disable_int_sync(dev);
4106 tasklet_kill(&cp->cnic_irq_task);
4107 free_irq(ethdev->irq_arr[0].vector, dev);
4108 }
4109 }
4110
4111 static int cnic_request_irq(struct cnic_dev *dev)
4112 {
4113 struct cnic_local *cp = dev->cnic_priv;
4114 struct cnic_eth_dev *ethdev = cp->ethdev;
4115 int err;
4116
4117 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4118 if (err)
4119 tasklet_disable(&cp->cnic_irq_task);
4120
4121 return err;
4122 }
4123
4124 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4125 {
4126 struct cnic_local *cp = dev->cnic_priv;
4127 struct cnic_eth_dev *ethdev = cp->ethdev;
4128
4129 if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4130 int err, i = 0;
4131 int sblk_num = cp->status_blk_num;
4132 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4133 BNX2_HC_SB_CONFIG_1;
4134
4135 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4136
4137 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4138 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4139 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4140
4141 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4142 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4143 (unsigned long) dev);
4144 err = cnic_request_irq(dev);
4145 if (err)
4146 return err;
4147
4148 while (cp->status_blk.bnx2->status_completion_producer_index &&
4149 i < 10) {
4150 CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4151 1 << (11 + sblk_num));
4152 udelay(10);
4153 i++;
4154 barrier();
4155 }
4156 if (cp->status_blk.bnx2->status_completion_producer_index) {
4157 cnic_free_irq(dev);
4158 goto failed;
4159 }
4160
4161 } else {
4162 struct status_block *sblk = cp->status_blk.gen;
4163 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4164 int i = 0;
4165
4166 while (sblk->status_completion_producer_index && i < 10) {
4167 CNIC_WR(dev, BNX2_HC_COMMAND,
4168 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4169 udelay(10);
4170 i++;
4171 barrier();
4172 }
4173 if (sblk->status_completion_producer_index)
4174 goto failed;
4175
4176 }
4177 return 0;
4178
4179 failed:
4180 netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4181 return -EBUSY;
4182 }
4183
4184 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4185 {
4186 struct cnic_local *cp = dev->cnic_priv;
4187 struct cnic_eth_dev *ethdev = cp->ethdev;
4188
4189 if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4190 return;
4191
4192 CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4193 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4194 }
4195
4196 static void cnic_get_bnx2_iscsi_info(struct cnic_dev *dev)
4197 {
4198 u32 max_conn;
4199
4200 max_conn = cnic_reg_rd_ind(dev, BNX2_FW_MAX_ISCSI_CONN);
4201 dev->max_iscsi_conn = max_conn;
4202 }
4203
4204 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4205 {
4206 struct cnic_local *cp = dev->cnic_priv;
4207 struct cnic_eth_dev *ethdev = cp->ethdev;
4208
4209 if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4210 return;
4211
4212 CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4213 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4214 CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4215 synchronize_irq(ethdev->irq_arr[0].vector);
4216 }
4217
4218 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4219 {
4220 struct cnic_local *cp = dev->cnic_priv;
4221 struct cnic_eth_dev *ethdev = cp->ethdev;
4222 struct cnic_uio_dev *udev = cp->udev;
4223 u32 cid_addr, tx_cid, sb_id;
4224 u32 val, offset0, offset1, offset2, offset3;
4225 int i;
4226 struct tx_bd *txbd;
4227 dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4228 struct status_block *s_blk = cp->status_blk.gen;
4229
4230 sb_id = cp->status_blk_num;
4231 tx_cid = 20;
4232 cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4233 if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4234 struct status_block_msix *sblk = cp->status_blk.bnx2;
4235
4236 tx_cid = TX_TSS_CID + sb_id - 1;
4237 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4238 (TX_TSS_CID << 7));
4239 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4240 }
4241 cp->tx_cons = *cp->tx_cons_ptr;
4242
4243 cid_addr = GET_CID_ADDR(tx_cid);
4244 if (CHIP_NUM(cp) == CHIP_NUM_5709) {
4245 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4246
4247 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4248 cnic_ctx_wr(dev, cid_addr2, i, 0);
4249
4250 offset0 = BNX2_L2CTX_TYPE_XI;
4251 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4252 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4253 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4254 } else {
4255 cnic_init_context(dev, tx_cid);
4256 cnic_init_context(dev, tx_cid + 1);
4257
4258 offset0 = BNX2_L2CTX_TYPE;
4259 offset1 = BNX2_L2CTX_CMD_TYPE;
4260 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4261 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4262 }
4263 val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4264 cnic_ctx_wr(dev, cid_addr, offset0, val);
4265
4266 val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4267 cnic_ctx_wr(dev, cid_addr, offset1, val);
4268
4269 txbd = (struct tx_bd *) udev->l2_ring;
4270
4271 buf_map = udev->l2_buf_map;
4272 for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
4273 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4274 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4275 }
4276 val = (u64) ring_map >> 32;
4277 cnic_ctx_wr(dev, cid_addr, offset2, val);
4278 txbd->tx_bd_haddr_hi = val;
4279
4280 val = (u64) ring_map & 0xffffffff;
4281 cnic_ctx_wr(dev, cid_addr, offset3, val);
4282 txbd->tx_bd_haddr_lo = val;
4283 }
4284
4285 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4286 {
4287 struct cnic_local *cp = dev->cnic_priv;
4288 struct cnic_eth_dev *ethdev = cp->ethdev;
4289 struct cnic_uio_dev *udev = cp->udev;
4290 u32 cid_addr, sb_id, val, coal_reg, coal_val;
4291 int i;
4292 struct rx_bd *rxbd;
4293 struct status_block *s_blk = cp->status_blk.gen;
4294 dma_addr_t ring_map = udev->l2_ring_map;
4295
4296 sb_id = cp->status_blk_num;
4297 cnic_init_context(dev, 2);
4298 cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4299 coal_reg = BNX2_HC_COMMAND;
4300 coal_val = CNIC_RD(dev, coal_reg);
4301 if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4302 struct status_block_msix *sblk = cp->status_blk.bnx2;
4303
4304 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4305 coal_reg = BNX2_HC_COALESCE_NOW;
4306 coal_val = 1 << (11 + sb_id);
4307 }
4308 i = 0;
4309 while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4310 CNIC_WR(dev, coal_reg, coal_val);
4311 udelay(10);
4312 i++;
4313 barrier();
4314 }
4315 cp->rx_cons = *cp->rx_cons_ptr;
4316
4317 cid_addr = GET_CID_ADDR(2);
4318 val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4319 BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4320 cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4321
4322 if (sb_id == 0)
4323 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4324 else
4325 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4326 cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4327
4328 rxbd = (struct rx_bd *) (udev->l2_ring + BCM_PAGE_SIZE);
4329 for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
4330 dma_addr_t buf_map;
4331 int n = (i % cp->l2_rx_ring_size) + 1;
4332
4333 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4334 rxbd->rx_bd_len = cp->l2_single_buf_size;
4335 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4336 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4337 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4338 }
4339 val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4340 cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4341 rxbd->rx_bd_haddr_hi = val;
4342
4343 val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4344 cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4345 rxbd->rx_bd_haddr_lo = val;
4346
4347 val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4348 cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4349 }
4350
4351 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4352 {
4353 struct kwqe *wqes[1], l2kwqe;
4354
4355 memset(&l2kwqe, 0, sizeof(l2kwqe));
4356 wqes[0] = &l2kwqe;
4357 l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4358 (L2_KWQE_OPCODE_VALUE_FLUSH <<
4359 KWQE_OPCODE_SHIFT) | 2;
4360 dev->submit_kwqes(dev, wqes, 1);
4361 }
4362
4363 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4364 {
4365 struct cnic_local *cp = dev->cnic_priv;
4366 u32 val;
4367
4368 val = cp->func << 2;
4369
4370 cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4371
4372 val = cnic_reg_rd_ind(dev, cp->shmem_base +
4373 BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4374 dev->mac_addr[0] = (u8) (val >> 8);
4375 dev->mac_addr[1] = (u8) val;
4376
4377 CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4378
4379 val = cnic_reg_rd_ind(dev, cp->shmem_base +
4380 BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4381 dev->mac_addr[2] = (u8) (val >> 24);
4382 dev->mac_addr[3] = (u8) (val >> 16);
4383 dev->mac_addr[4] = (u8) (val >> 8);
4384 dev->mac_addr[5] = (u8) val;
4385
4386 CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4387
4388 val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4389 if (CHIP_NUM(cp) != CHIP_NUM_5709)
4390 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4391
4392 CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4393 CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4394 CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4395 }
4396
4397 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4398 {
4399 struct cnic_local *cp = dev->cnic_priv;
4400 struct cnic_eth_dev *ethdev = cp->ethdev;
4401 struct status_block *sblk = cp->status_blk.gen;
4402 u32 val, kcq_cid_addr, kwq_cid_addr;
4403 int err;
4404
4405 cnic_set_bnx2_mac(dev);
4406
4407 val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4408 val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4409 if (BCM_PAGE_BITS > 12)
4410 val |= (12 - 8) << 4;
4411 else
4412 val |= (BCM_PAGE_BITS - 8) << 4;
4413
4414 CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4415
4416 CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4417 CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4418 CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4419
4420 err = cnic_setup_5709_context(dev, 1);
4421 if (err)
4422 return err;
4423
4424 cnic_init_context(dev, KWQ_CID);
4425 cnic_init_context(dev, KCQ_CID);
4426
4427 kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4428 cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4429
4430 cp->max_kwq_idx = MAX_KWQ_IDX;
4431 cp->kwq_prod_idx = 0;
4432 cp->kwq_con_idx = 0;
4433 set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4434
4435 if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
4436 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4437 else
4438 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4439
4440 /* Initialize the kernel work queue context. */
4441 val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4442 (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4443 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4444
4445 val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4446 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4447
4448 val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4449 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4450
4451 val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4452 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4453
4454 val = (u32) cp->kwq_info.pgtbl_map;
4455 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4456
4457 kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4458 cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4459
4460 cp->kcq1.sw_prod_idx = 0;
4461 cp->kcq1.hw_prod_idx_ptr =
4462 (u16 *) &sblk->status_completion_producer_index;
4463
4464 cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
4465
4466 /* Initialize the kernel complete queue context. */
4467 val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4468 (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4469 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4470
4471 val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4472 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4473
4474 val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4475 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4476
4477 val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4478 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4479
4480 val = (u32) cp->kcq1.dma.pgtbl_map;
4481 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4482
4483 cp->int_num = 0;
4484 if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4485 struct status_block_msix *msblk = cp->status_blk.bnx2;
4486 u32 sb_id = cp->status_blk_num;
4487 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4488
4489 cp->kcq1.hw_prod_idx_ptr =
4490 (u16 *) &msblk->status_completion_producer_index;
4491 cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
4492 cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
4493 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4494 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4495 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4496 }
4497
4498 /* Enable Commnad Scheduler notification when we write to the
4499 * host producer index of the kernel contexts. */
4500 CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4501
4502 /* Enable Command Scheduler notification when we write to either
4503 * the Send Queue or Receive Queue producer indexes of the kernel
4504 * bypass contexts. */
4505 CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4506 CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4507
4508 /* Notify COM when the driver post an application buffer. */
4509 CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4510
4511 /* Set the CP and COM doorbells. These two processors polls the
4512 * doorbell for a non zero value before running. This must be done
4513 * after setting up the kernel queue contexts. */
4514 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4515 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4516
4517 cnic_init_bnx2_tx_ring(dev);
4518 cnic_init_bnx2_rx_ring(dev);
4519
4520 err = cnic_init_bnx2_irq(dev);
4521 if (err) {
4522 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4523 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4524 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4525 return err;
4526 }
4527
4528 cnic_get_bnx2_iscsi_info(dev);
4529
4530 return 0;
4531 }
4532
4533 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4534 {
4535 struct cnic_local *cp = dev->cnic_priv;
4536 struct cnic_eth_dev *ethdev = cp->ethdev;
4537 u32 start_offset = ethdev->ctx_tbl_offset;
4538 int i;
4539
4540 for (i = 0; i < cp->ctx_blks; i++) {
4541 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4542 dma_addr_t map = ctx->mapping;
4543
4544 if (cp->ctx_align) {
4545 unsigned long mask = cp->ctx_align - 1;
4546
4547 map = (map + mask) & ~mask;
4548 }
4549
4550 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4551 }
4552 }
4553
4554 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4555 {
4556 struct cnic_local *cp = dev->cnic_priv;
4557 struct cnic_eth_dev *ethdev = cp->ethdev;
4558 int err = 0;
4559
4560 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4561 (unsigned long) dev);
4562 if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4563 err = cnic_request_irq(dev);
4564
4565 return err;
4566 }
4567
4568 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4569 u16 sb_id, u8 sb_index,
4570 u8 disable)
4571 {
4572
4573 u32 addr = BAR_CSTRORM_INTMEM +
4574 CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4575 offsetof(struct hc_status_block_data_e1x, index_data) +
4576 sizeof(struct hc_index_data)*sb_index +
4577 offsetof(struct hc_index_data, flags);
4578 u16 flags = CNIC_RD16(dev, addr);
4579 /* clear and set */
4580 flags &= ~HC_INDEX_DATA_HC_ENABLED;
4581 flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4582 HC_INDEX_DATA_HC_ENABLED);
4583 CNIC_WR16(dev, addr, flags);
4584 }
4585
4586 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4587 {
4588 struct cnic_local *cp = dev->cnic_priv;
4589 u8 sb_id = cp->status_blk_num;
4590
4591 CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4592 CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4593 offsetof(struct hc_status_block_data_e1x, index_data) +
4594 sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4595 offsetof(struct hc_index_data, timeout), 64 / 12);
4596 cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4597 }
4598
4599 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4600 {
4601 }
4602
4603 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4604 struct client_init_ramrod_data *data)
4605 {
4606 struct cnic_local *cp = dev->cnic_priv;
4607 struct cnic_uio_dev *udev = cp->udev;
4608 union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4609 dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4610 struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4611 int port = CNIC_PORT(cp);
4612 int i;
4613 u32 cli = cp->ethdev->iscsi_l2_client_id;
4614 u32 val;
4615
4616 memset(txbd, 0, BCM_PAGE_SIZE);
4617
4618 buf_map = udev->l2_buf_map;
4619 for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4620 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4621 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4622
4623 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4624 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4625 reg_bd->addr_hi = start_bd->addr_hi;
4626 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4627 start_bd->nbytes = cpu_to_le16(0x10);
4628 start_bd->nbd = cpu_to_le16(3);
4629 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4630 start_bd->general_data = (UNICAST_ADDRESS <<
4631 ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
4632 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4633
4634 }
4635
4636 val = (u64) ring_map >> 32;
4637 txbd->next_bd.addr_hi = cpu_to_le32(val);
4638
4639 data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4640
4641 val = (u64) ring_map & 0xffffffff;
4642 txbd->next_bd.addr_lo = cpu_to_le32(val);
4643
4644 data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4645
4646 /* Other ramrod params */
4647 data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4648 data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4649
4650 /* reset xstorm per client statistics */
4651 if (cli < MAX_STAT_COUNTER_ID) {
4652 val = BAR_XSTRORM_INTMEM +
4653 XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4654 for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
4655 CNIC_WR(dev, val + i * 4, 0);
4656 }
4657
4658 cp->tx_cons_ptr =
4659 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4660 }
4661
4662 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4663 struct client_init_ramrod_data *data)
4664 {
4665 struct cnic_local *cp = dev->cnic_priv;
4666 struct cnic_uio_dev *udev = cp->udev;
4667 struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4668 BCM_PAGE_SIZE);
4669 struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4670 (udev->l2_ring + (2 * BCM_PAGE_SIZE));
4671 struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4672 int i;
4673 int port = CNIC_PORT(cp);
4674 u32 cli = cp->ethdev->iscsi_l2_client_id;
4675 int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4676 u32 val;
4677 dma_addr_t ring_map = udev->l2_ring_map;
4678
4679 /* General data */
4680 data->general.client_id = cli;
4681 data->general.statistics_en_flg = 1;
4682 data->general.statistics_counter_id = cli;
4683 data->general.activate_flg = 1;
4684 data->general.sp_client_id = cli;
4685
4686 for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4687 dma_addr_t buf_map;
4688 int n = (i % cp->l2_rx_ring_size) + 1;
4689
4690 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4691 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4692 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4693 }
4694
4695 val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4696 rxbd->addr_hi = cpu_to_le32(val);
4697 data->rx.bd_page_base.hi = cpu_to_le32(val);
4698
4699 val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4700 rxbd->addr_lo = cpu_to_le32(val);
4701 data->rx.bd_page_base.lo = cpu_to_le32(val);
4702
4703 rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4704 val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4705 rxcqe->addr_hi = cpu_to_le32(val);
4706 data->rx.cqe_page_base.hi = cpu_to_le32(val);
4707
4708 val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4709 rxcqe->addr_lo = cpu_to_le32(val);
4710 data->rx.cqe_page_base.lo = cpu_to_le32(val);
4711
4712 /* Other ramrod params */
4713 data->rx.client_qzone_id = cl_qzone_id;
4714 data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
4715 data->rx.status_block_id = BNX2X_DEF_SB_ID;
4716
4717 data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4718 data->rx.bd_buff_size = cpu_to_le16(cp->l2_single_buf_size);
4719
4720 data->rx.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4721 data->rx.outer_vlan_removal_enable_flg = 1;
4722
4723 /* reset tstorm and ustorm per client statistics */
4724 if (cli < MAX_STAT_COUNTER_ID) {
4725 val = BAR_TSTRORM_INTMEM +
4726 TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4727 for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
4728 CNIC_WR(dev, val + i * 4, 0);
4729
4730 val = BAR_USTRORM_INTMEM +
4731 USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4732 for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
4733 CNIC_WR(dev, val + i * 4, 0);
4734 }
4735
4736 cp->rx_cons_ptr =
4737 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4738 cp->rx_cons = *cp->rx_cons_ptr;
4739 }
4740
4741 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
4742 {
4743 struct cnic_local *cp = dev->cnic_priv;
4744 u32 pfid = cp->pfid;
4745
4746 cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4747 CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4748 cp->kcq1.sw_prod_idx = 0;
4749
4750 if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4751 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4752
4753 cp->kcq1.hw_prod_idx_ptr =
4754 &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4755 cp->kcq1.status_idx_ptr =
4756 &sb->sb.running_index[SM_RX_ID];
4757 } else {
4758 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
4759
4760 cp->kcq1.hw_prod_idx_ptr =
4761 &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4762 cp->kcq1.status_idx_ptr =
4763 &sb->sb.running_index[SM_RX_ID];
4764 }
4765
4766 if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4767 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4768
4769 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
4770 USTORM_FCOE_EQ_PROD_OFFSET(pfid);
4771 cp->kcq2.sw_prod_idx = 0;
4772 cp->kcq2.hw_prod_idx_ptr =
4773 &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
4774 cp->kcq2.status_idx_ptr =
4775 &sb->sb.running_index[SM_RX_ID];
4776 }
4777 }
4778
4779 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4780 {
4781 struct cnic_local *cp = dev->cnic_priv;
4782 struct cnic_eth_dev *ethdev = cp->ethdev;
4783 int func = CNIC_FUNC(cp), ret, i;
4784 u32 pfid;
4785
4786 if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4787 u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);
4788
4789 if (!(val & 1))
4790 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN);
4791 else
4792 val = (val >> 1) & 1;
4793
4794 if (val)
4795 cp->pfid = func >> 1;
4796 else
4797 cp->pfid = func & 0x6;
4798 } else {
4799 cp->pfid = func;
4800 }
4801 pfid = cp->pfid;
4802
4803 ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4804 cp->iscsi_start_cid);
4805
4806 if (ret)
4807 return -ENOMEM;
4808
4809 if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4810 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl,
4811 BNX2X_FCOE_NUM_CONNECTIONS,
4812 cp->fcoe_start_cid);
4813
4814 if (ret)
4815 return -ENOMEM;
4816 }
4817
4818 cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
4819
4820 cnic_init_bnx2x_kcq(dev);
4821
4822 /* Only 1 EQ */
4823 CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
4824 CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4825 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
4826 CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4827 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
4828 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
4829 CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4830 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
4831 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
4832 CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4833 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
4834 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
4835 CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4836 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
4837 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
4838 CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4839 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
4840 CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4841 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
4842 CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4843 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
4844 HC_INDEX_ISCSI_EQ_CONS);
4845
4846 for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4847 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4848 TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i),
4849 cp->conn_buf_info.pgtbl[2 * i]);
4850 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4851 TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i) + 4,
4852 cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4853 }
4854
4855 CNIC_WR(dev, BAR_USTRORM_INTMEM +
4856 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
4857 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4858 CNIC_WR(dev, BAR_USTRORM_INTMEM +
4859 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
4860 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4861
4862 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4863 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
4864
4865 cnic_setup_bnx2x_context(dev);
4866
4867 ret = cnic_init_bnx2x_irq(dev);
4868 if (ret)
4869 return ret;
4870
4871 return 0;
4872 }
4873
4874 static void cnic_init_rings(struct cnic_dev *dev)
4875 {
4876 struct cnic_local *cp = dev->cnic_priv;
4877 struct cnic_uio_dev *udev = cp->udev;
4878
4879 if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4880 return;
4881
4882 if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4883 cnic_init_bnx2_tx_ring(dev);
4884 cnic_init_bnx2_rx_ring(dev);
4885 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4886 } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4887 u32 cli = cp->ethdev->iscsi_l2_client_id;
4888 u32 cid = cp->ethdev->iscsi_l2_cid;
4889 u32 cl_qzone_id;
4890 struct client_init_ramrod_data *data;
4891 union l5cm_specific_data l5_data;
4892 struct ustorm_eth_rx_producers rx_prods = {0};
4893 u32 off, i;
4894
4895 rx_prods.bd_prod = 0;
4896 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4897 barrier();
4898
4899 cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4900
4901 off = BAR_USTRORM_INTMEM +
4902 (BNX2X_CHIP_IS_E2(cp->chip_id) ?
4903 USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
4904 USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
4905
4906 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4907 CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4908
4909 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4910
4911 data = udev->l2_buf;
4912
4913 memset(data, 0, sizeof(*data));
4914
4915 cnic_init_bnx2x_tx_ring(dev, data);
4916 cnic_init_bnx2x_rx_ring(dev, data);
4917
4918 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
4919 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
4920
4921 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4922
4923 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4924 cid, ETH_CONNECTION_TYPE, &l5_data);
4925
4926 i = 0;
4927 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4928 ++i < 10)
4929 msleep(1);
4930
4931 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4932 netdev_err(dev->netdev,
4933 "iSCSI CLIENT_SETUP did not complete\n");
4934 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4935 cnic_ring_ctl(dev, cid, cli, 1);
4936 }
4937 }
4938
4939 static void cnic_shutdown_rings(struct cnic_dev *dev)
4940 {
4941 struct cnic_local *cp = dev->cnic_priv;
4942
4943 if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4944 return;
4945
4946 if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4947 cnic_shutdown_bnx2_rx_ring(dev);
4948 } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4949 struct cnic_local *cp = dev->cnic_priv;
4950 u32 cli = cp->ethdev->iscsi_l2_client_id;
4951 u32 cid = cp->ethdev->iscsi_l2_cid;
4952 union l5cm_specific_data l5_data;
4953 int i;
4954
4955 cnic_ring_ctl(dev, cid, cli, 0);
4956
4957 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4958
4959 l5_data.phy_address.lo = cli;
4960 l5_data.phy_address.hi = 0;
4961 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4962 cid, ETH_CONNECTION_TYPE, &l5_data);
4963 i = 0;
4964 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4965 ++i < 10)
4966 msleep(1);
4967
4968 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4969 netdev_err(dev->netdev,
4970 "iSCSI CLIENT_HALT did not complete\n");
4971 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4972
4973 memset(&l5_data, 0, sizeof(l5_data));
4974 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
4975 cid, NONE_CONNECTION_TYPE, &l5_data);
4976 msleep(10);
4977 }
4978 clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4979 }
4980
4981 static int cnic_register_netdev(struct cnic_dev *dev)
4982 {
4983 struct cnic_local *cp = dev->cnic_priv;
4984 struct cnic_eth_dev *ethdev = cp->ethdev;
4985 int err;
4986
4987 if (!ethdev)
4988 return -ENODEV;
4989
4990 if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
4991 return 0;
4992
4993 err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4994 if (err)
4995 netdev_err(dev->netdev, "register_cnic failed\n");
4996
4997 return err;
4998 }
4999
5000 static void cnic_unregister_netdev(struct cnic_dev *dev)
5001 {
5002 struct cnic_local *cp = dev->cnic_priv;
5003 struct cnic_eth_dev *ethdev = cp->ethdev;
5004
5005 if (!ethdev)
5006 return;
5007
5008 ethdev->drv_unregister_cnic(dev->netdev);
5009 }
5010
5011 static int cnic_start_hw(struct cnic_dev *dev)
5012 {
5013 struct cnic_local *cp = dev->cnic_priv;
5014 struct cnic_eth_dev *ethdev = cp->ethdev;
5015 int err;
5016
5017 if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5018 return -EALREADY;
5019
5020 dev->regview = ethdev->io_base;
5021 pci_dev_get(dev->pcidev);
5022 cp->func = PCI_FUNC(dev->pcidev->devfn);
5023 cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5024 cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5025
5026 err = cp->alloc_resc(dev);
5027 if (err) {
5028 netdev_err(dev->netdev, "allocate resource failure\n");
5029 goto err1;
5030 }
5031
5032 err = cp->start_hw(dev);
5033 if (err)
5034 goto err1;
5035
5036 err = cnic_cm_open(dev);
5037 if (err)
5038 goto err1;
5039
5040 set_bit(CNIC_F_CNIC_UP, &dev->flags);
5041
5042 cp->enable_int(dev);
5043
5044 return 0;
5045
5046 err1:
5047 cp->free_resc(dev);
5048 pci_dev_put(dev->pcidev);
5049 return err;
5050 }
5051
5052 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5053 {
5054 cnic_disable_bnx2_int_sync(dev);
5055
5056 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5057 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5058
5059 cnic_init_context(dev, KWQ_CID);
5060 cnic_init_context(dev, KCQ_CID);
5061
5062 cnic_setup_5709_context(dev, 0);
5063 cnic_free_irq(dev);
5064
5065 cnic_free_resc(dev);
5066 }
5067
5068
5069 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5070 {
5071 struct cnic_local *cp = dev->cnic_priv;
5072
5073 cnic_free_irq(dev);
5074 *cp->kcq1.hw_prod_idx_ptr = 0;
5075 CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5076 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5077 CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5078 cnic_free_resc(dev);
5079 }
5080
5081 static void cnic_stop_hw(struct cnic_dev *dev)
5082 {
5083 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5084 struct cnic_local *cp = dev->cnic_priv;
5085 int i = 0;
5086
5087 /* Need to wait for the ring shutdown event to complete
5088 * before clearing the CNIC_UP flag.
5089 */
5090 while (cp->udev->uio_dev != -1 && i < 15) {
5091 msleep(100);
5092 i++;
5093 }
5094 cnic_shutdown_rings(dev);
5095 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5096 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
5097 synchronize_rcu();
5098 cnic_cm_shutdown(dev);
5099 cp->stop_hw(dev);
5100 pci_dev_put(dev->pcidev);
5101 }
5102 }
5103
5104 static void cnic_free_dev(struct cnic_dev *dev)
5105 {
5106 int i = 0;
5107
5108 while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5109 msleep(100);
5110 i++;
5111 }
5112 if (atomic_read(&dev->ref_count) != 0)
5113 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5114
5115 netdev_info(dev->netdev, "Removed CNIC device\n");
5116 dev_put(dev->netdev);
5117 kfree(dev);
5118 }
5119
5120 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5121 struct pci_dev *pdev)
5122 {
5123 struct cnic_dev *cdev;
5124 struct cnic_local *cp;
5125 int alloc_size;
5126
5127 alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5128
5129 cdev = kzalloc(alloc_size , GFP_KERNEL);
5130 if (cdev == NULL) {
5131 netdev_err(dev, "allocate dev struct failure\n");
5132 return NULL;
5133 }
5134
5135 cdev->netdev = dev;
5136 cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5137 cdev->register_device = cnic_register_device;
5138 cdev->unregister_device = cnic_unregister_device;
5139 cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5140
5141 cp = cdev->cnic_priv;
5142 cp->dev = cdev;
5143 cp->l2_single_buf_size = 0x400;
5144 cp->l2_rx_ring_size = 3;
5145
5146 spin_lock_init(&cp->cnic_ulp_lock);
5147
5148 netdev_info(dev, "Added CNIC device\n");
5149
5150 return cdev;
5151 }
5152
5153 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5154 {
5155 struct pci_dev *pdev;
5156 struct cnic_dev *cdev;
5157 struct cnic_local *cp;
5158 struct cnic_eth_dev *ethdev = NULL;
5159 struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5160
5161 probe = symbol_get(bnx2_cnic_probe);
5162 if (probe) {
5163 ethdev = (*probe)(dev);
5164 symbol_put(bnx2_cnic_probe);
5165 }
5166 if (!ethdev)
5167 return NULL;
5168
5169 pdev = ethdev->pdev;
5170 if (!pdev)
5171 return NULL;
5172
5173 dev_hold(dev);
5174 pci_dev_get(pdev);
5175 if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5176 pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5177 (pdev->revision < 0x10)) {
5178 pci_dev_put(pdev);
5179 goto cnic_err;
5180 }
5181 pci_dev_put(pdev);
5182
5183 cdev = cnic_alloc_dev(dev, pdev);
5184 if (cdev == NULL)
5185 goto cnic_err;
5186
5187 set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5188 cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5189
5190 cp = cdev->cnic_priv;
5191 cp->ethdev = ethdev;
5192 cdev->pcidev = pdev;
5193 cp->chip_id = ethdev->chip_id;
5194
5195 cp->cnic_ops = &cnic_bnx2_ops;
5196 cp->start_hw = cnic_start_bnx2_hw;
5197 cp->stop_hw = cnic_stop_bnx2_hw;
5198 cp->setup_pgtbl = cnic_setup_page_tbl;
5199 cp->alloc_resc = cnic_alloc_bnx2_resc;
5200 cp->free_resc = cnic_free_resc;
5201 cp->start_cm = cnic_cm_init_bnx2_hw;
5202 cp->stop_cm = cnic_cm_stop_bnx2_hw;
5203 cp->enable_int = cnic_enable_bnx2_int;
5204 cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5205 cp->close_conn = cnic_close_bnx2_conn;
5206 cp->next_idx = cnic_bnx2_next_idx;
5207 cp->hw_idx = cnic_bnx2_hw_idx;
5208 return cdev;
5209
5210 cnic_err:
5211 dev_put(dev);
5212 return NULL;
5213 }
5214
5215 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5216 {
5217 struct pci_dev *pdev;
5218 struct cnic_dev *cdev;
5219 struct cnic_local *cp;
5220 struct cnic_eth_dev *ethdev = NULL;
5221 struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5222
5223 probe = symbol_get(bnx2x_cnic_probe);
5224 if (probe) {
5225 ethdev = (*probe)(dev);
5226 symbol_put(bnx2x_cnic_probe);
5227 }
5228 if (!ethdev)
5229 return NULL;
5230
5231 pdev = ethdev->pdev;
5232 if (!pdev)
5233 return NULL;
5234
5235 dev_hold(dev);
5236 cdev = cnic_alloc_dev(dev, pdev);
5237 if (cdev == NULL) {
5238 dev_put(dev);
5239 return NULL;
5240 }
5241
5242 set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5243 cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5244
5245 cp = cdev->cnic_priv;
5246 cp->ethdev = ethdev;
5247 cdev->pcidev = pdev;
5248 cp->chip_id = ethdev->chip_id;
5249
5250 if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5251 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5252 if (BNX2X_CHIP_IS_E2(cp->chip_id) &&
5253 !(ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE))
5254 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5255
5256 memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);
5257
5258 cp->cnic_ops = &cnic_bnx2x_ops;
5259 cp->start_hw = cnic_start_bnx2x_hw;
5260 cp->stop_hw = cnic_stop_bnx2x_hw;
5261 cp->setup_pgtbl = cnic_setup_page_tbl_le;
5262 cp->alloc_resc = cnic_alloc_bnx2x_resc;
5263 cp->free_resc = cnic_free_resc;
5264 cp->start_cm = cnic_cm_init_bnx2x_hw;
5265 cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5266 cp->enable_int = cnic_enable_bnx2x_int;
5267 cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5268 if (BNX2X_CHIP_IS_E2(cp->chip_id))
5269 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5270 else
5271 cp->ack_int = cnic_ack_bnx2x_msix;
5272 cp->close_conn = cnic_close_bnx2x_conn;
5273 cp->next_idx = cnic_bnx2x_next_idx;
5274 cp->hw_idx = cnic_bnx2x_hw_idx;
5275 return cdev;
5276 }
5277
5278 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5279 {
5280 struct ethtool_drvinfo drvinfo;
5281 struct cnic_dev *cdev = NULL;
5282
5283 if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5284 memset(&drvinfo, 0, sizeof(drvinfo));
5285 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5286
5287 if (!strcmp(drvinfo.driver, "bnx2"))
5288 cdev = init_bnx2_cnic(dev);
5289 if (!strcmp(drvinfo.driver, "bnx2x"))
5290 cdev = init_bnx2x_cnic(dev);
5291 if (cdev) {
5292 write_lock(&cnic_dev_lock);
5293 list_add(&cdev->list, &cnic_dev_list);
5294 write_unlock(&cnic_dev_lock);
5295 }
5296 }
5297 return cdev;
5298 }
5299
5300 /**
5301 * netdev event handler
5302 */
5303 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5304 void *ptr)
5305 {
5306 struct net_device *netdev = ptr;
5307 struct cnic_dev *dev;
5308 int if_type;
5309 int new_dev = 0;
5310
5311 dev = cnic_from_netdev(netdev);
5312
5313 if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
5314 /* Check for the hot-plug device */
5315 dev = is_cnic_dev(netdev);
5316 if (dev) {
5317 new_dev = 1;
5318 cnic_hold(dev);
5319 }
5320 }
5321 if (dev) {
5322 struct cnic_local *cp = dev->cnic_priv;
5323
5324 if (new_dev)
5325 cnic_ulp_init(dev);
5326 else if (event == NETDEV_UNREGISTER)
5327 cnic_ulp_exit(dev);
5328
5329 if (event == NETDEV_UP) {
5330 if (cnic_register_netdev(dev) != 0) {
5331 cnic_put(dev);
5332 goto done;
5333 }
5334 if (!cnic_start_hw(dev))
5335 cnic_ulp_start(dev);
5336 }
5337
5338 rcu_read_lock();
5339 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5340 struct cnic_ulp_ops *ulp_ops;
5341 void *ctx;
5342
5343 ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
5344 if (!ulp_ops || !ulp_ops->indicate_netevent)
5345 continue;
5346
5347 ctx = cp->ulp_handle[if_type];
5348
5349 ulp_ops->indicate_netevent(ctx, event);
5350 }
5351 rcu_read_unlock();
5352
5353 if (event == NETDEV_GOING_DOWN) {
5354 cnic_ulp_stop(dev);
5355 cnic_stop_hw(dev);
5356 cnic_unregister_netdev(dev);
5357 } else if (event == NETDEV_UNREGISTER) {
5358 write_lock(&cnic_dev_lock);
5359 list_del_init(&dev->list);
5360 write_unlock(&cnic_dev_lock);
5361
5362 cnic_put(dev);
5363 cnic_free_dev(dev);
5364 goto done;
5365 }
5366 cnic_put(dev);
5367 }
5368 done:
5369 return NOTIFY_DONE;
5370 }
5371
5372 static struct notifier_block cnic_netdev_notifier = {
5373 .notifier_call = cnic_netdev_event
5374 };
5375
5376 static void cnic_release(void)
5377 {
5378 struct cnic_dev *dev;
5379 struct cnic_uio_dev *udev;
5380
5381 while (!list_empty(&cnic_dev_list)) {
5382 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
5383 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5384 cnic_ulp_stop(dev);
5385 cnic_stop_hw(dev);
5386 }
5387
5388 cnic_ulp_exit(dev);
5389 cnic_unregister_netdev(dev);
5390 list_del_init(&dev->list);
5391 cnic_free_dev(dev);
5392 }
5393 while (!list_empty(&cnic_udev_list)) {
5394 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5395 list);
5396 cnic_free_uio(udev);
5397 }
5398 }
5399
5400 static int __init cnic_init(void)
5401 {
5402 int rc = 0;
5403
5404 pr_info("%s", version);
5405
5406 rc = register_netdevice_notifier(&cnic_netdev_notifier);
5407 if (rc) {
5408 cnic_release();
5409 return rc;
5410 }
5411
5412 cnic_wq = create_singlethread_workqueue("cnic_wq");
5413 if (!cnic_wq) {
5414 cnic_release();
5415 unregister_netdevice_notifier(&cnic_netdev_notifier);
5416 return -ENOMEM;
5417 }
5418
5419 return 0;
5420 }
5421
5422 static void __exit cnic_exit(void)
5423 {
5424 unregister_netdevice_notifier(&cnic_netdev_notifier);
5425 cnic_release();
5426 destroy_workqueue(cnic_wq);
5427 }
5428
5429 module_init(cnic_init);
5430 module_exit(cnic_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree