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net:drivers/net: Miscellaneous conversions to ETH_ALEN
[deliverable/linux.git] / drivers / net / ethernet / broadcom / cnic.c
1 /* cnic.c: Broadcom CNIC core network driver.
2 *
3 * Copyright (c) 2006-2013 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 #include <linux/prefetch.h>
31 #include <linux/random.h>
32 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
33 #define BCM_VLAN 1
34 #endif
35 #include <net/ip.h>
36 #include <net/tcp.h>
37 #include <net/route.h>
38 #include <net/ipv6.h>
39 #include <net/ip6_route.h>
40 #include <net/ip6_checksum.h>
41 #include <scsi/iscsi_if.h>
42
43 #define BCM_CNIC 1
44 #include "cnic_if.h"
45 #include "bnx2.h"
46 #include "bnx2x/bnx2x.h"
47 #include "bnx2x/bnx2x_reg.h"
48 #include "bnx2x/bnx2x_fw_defs.h"
49 #include "bnx2x/bnx2x_hsi.h"
50 #include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
51 #include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
52 #include "../../../scsi/bnx2fc/bnx2fc_constants.h"
53 #include "cnic.h"
54 #include "cnic_defs.h"
55
56 #define CNIC_MODULE_NAME "cnic"
57
58 static char version[] =
59 "Broadcom NetXtreme II CNIC Driver " CNIC_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
60
61 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
62 "Chen (zongxi@broadcom.com");
63 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
64 MODULE_LICENSE("GPL");
65 MODULE_VERSION(CNIC_MODULE_VERSION);
66
67 /* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
68 static LIST_HEAD(cnic_dev_list);
69 static LIST_HEAD(cnic_udev_list);
70 static DEFINE_RWLOCK(cnic_dev_lock);
71 static DEFINE_MUTEX(cnic_lock);
72
73 static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
74
75 /* helper function, assuming cnic_lock is held */
76 static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
77 {
78 return rcu_dereference_protected(cnic_ulp_tbl[type],
79 lockdep_is_held(&cnic_lock));
80 }
81
82 static int cnic_service_bnx2(void *, void *);
83 static int cnic_service_bnx2x(void *, void *);
84 static int cnic_ctl(void *, struct cnic_ctl_info *);
85
86 static struct cnic_ops cnic_bnx2_ops = {
87 .cnic_owner = THIS_MODULE,
88 .cnic_handler = cnic_service_bnx2,
89 .cnic_ctl = cnic_ctl,
90 };
91
92 static struct cnic_ops cnic_bnx2x_ops = {
93 .cnic_owner = THIS_MODULE,
94 .cnic_handler = cnic_service_bnx2x,
95 .cnic_ctl = cnic_ctl,
96 };
97
98 static struct workqueue_struct *cnic_wq;
99
100 static void cnic_shutdown_rings(struct cnic_dev *);
101 static void cnic_init_rings(struct cnic_dev *);
102 static int cnic_cm_set_pg(struct cnic_sock *);
103
104 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
105 {
106 struct cnic_uio_dev *udev = uinfo->priv;
107 struct cnic_dev *dev;
108
109 if (!capable(CAP_NET_ADMIN))
110 return -EPERM;
111
112 if (udev->uio_dev != -1)
113 return -EBUSY;
114
115 rtnl_lock();
116 dev = udev->dev;
117
118 if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
119 rtnl_unlock();
120 return -ENODEV;
121 }
122
123 udev->uio_dev = iminor(inode);
124
125 cnic_shutdown_rings(dev);
126 cnic_init_rings(dev);
127 rtnl_unlock();
128
129 return 0;
130 }
131
132 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
133 {
134 struct cnic_uio_dev *udev = uinfo->priv;
135
136 udev->uio_dev = -1;
137 return 0;
138 }
139
140 static inline void cnic_hold(struct cnic_dev *dev)
141 {
142 atomic_inc(&dev->ref_count);
143 }
144
145 static inline void cnic_put(struct cnic_dev *dev)
146 {
147 atomic_dec(&dev->ref_count);
148 }
149
150 static inline void csk_hold(struct cnic_sock *csk)
151 {
152 atomic_inc(&csk->ref_count);
153 }
154
155 static inline void csk_put(struct cnic_sock *csk)
156 {
157 atomic_dec(&csk->ref_count);
158 }
159
160 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
161 {
162 struct cnic_dev *cdev;
163
164 read_lock(&cnic_dev_lock);
165 list_for_each_entry(cdev, &cnic_dev_list, list) {
166 if (netdev == cdev->netdev) {
167 cnic_hold(cdev);
168 read_unlock(&cnic_dev_lock);
169 return cdev;
170 }
171 }
172 read_unlock(&cnic_dev_lock);
173 return NULL;
174 }
175
176 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
177 {
178 atomic_inc(&ulp_ops->ref_count);
179 }
180
181 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
182 {
183 atomic_dec(&ulp_ops->ref_count);
184 }
185
186 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
187 {
188 struct cnic_local *cp = dev->cnic_priv;
189 struct cnic_eth_dev *ethdev = cp->ethdev;
190 struct drv_ctl_info info;
191 struct drv_ctl_io *io = &info.data.io;
192
193 info.cmd = DRV_CTL_CTX_WR_CMD;
194 io->cid_addr = cid_addr;
195 io->offset = off;
196 io->data = val;
197 ethdev->drv_ctl(dev->netdev, &info);
198 }
199
200 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
201 {
202 struct cnic_local *cp = dev->cnic_priv;
203 struct cnic_eth_dev *ethdev = cp->ethdev;
204 struct drv_ctl_info info;
205 struct drv_ctl_io *io = &info.data.io;
206
207 info.cmd = DRV_CTL_CTXTBL_WR_CMD;
208 io->offset = off;
209 io->dma_addr = addr;
210 ethdev->drv_ctl(dev->netdev, &info);
211 }
212
213 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
214 {
215 struct cnic_local *cp = dev->cnic_priv;
216 struct cnic_eth_dev *ethdev = cp->ethdev;
217 struct drv_ctl_info info;
218 struct drv_ctl_l2_ring *ring = &info.data.ring;
219
220 if (start)
221 info.cmd = DRV_CTL_START_L2_CMD;
222 else
223 info.cmd = DRV_CTL_STOP_L2_CMD;
224
225 ring->cid = cid;
226 ring->client_id = cl_id;
227 ethdev->drv_ctl(dev->netdev, &info);
228 }
229
230 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
231 {
232 struct cnic_local *cp = dev->cnic_priv;
233 struct cnic_eth_dev *ethdev = cp->ethdev;
234 struct drv_ctl_info info;
235 struct drv_ctl_io *io = &info.data.io;
236
237 info.cmd = DRV_CTL_IO_WR_CMD;
238 io->offset = off;
239 io->data = val;
240 ethdev->drv_ctl(dev->netdev, &info);
241 }
242
243 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
244 {
245 struct cnic_local *cp = dev->cnic_priv;
246 struct cnic_eth_dev *ethdev = cp->ethdev;
247 struct drv_ctl_info info;
248 struct drv_ctl_io *io = &info.data.io;
249
250 info.cmd = DRV_CTL_IO_RD_CMD;
251 io->offset = off;
252 ethdev->drv_ctl(dev->netdev, &info);
253 return io->data;
254 }
255
256 static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg)
257 {
258 struct cnic_local *cp = dev->cnic_priv;
259 struct cnic_eth_dev *ethdev = cp->ethdev;
260 struct drv_ctl_info info;
261 struct fcoe_capabilities *fcoe_cap =
262 &info.data.register_data.fcoe_features;
263
264 if (reg) {
265 info.cmd = DRV_CTL_ULP_REGISTER_CMD;
266 if (ulp_type == CNIC_ULP_FCOE && dev->fcoe_cap)
267 memcpy(fcoe_cap, dev->fcoe_cap, sizeof(*fcoe_cap));
268 } else {
269 info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;
270 }
271
272 info.data.ulp_type = ulp_type;
273 ethdev->drv_ctl(dev->netdev, &info);
274 }
275
276 static int cnic_in_use(struct cnic_sock *csk)
277 {
278 return test_bit(SK_F_INUSE, &csk->flags);
279 }
280
281 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
282 {
283 struct cnic_local *cp = dev->cnic_priv;
284 struct cnic_eth_dev *ethdev = cp->ethdev;
285 struct drv_ctl_info info;
286
287 info.cmd = cmd;
288 info.data.credit.credit_count = count;
289 ethdev->drv_ctl(dev->netdev, &info);
290 }
291
292 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
293 {
294 u32 i;
295
296 if (!cp->ctx_tbl)
297 return -EINVAL;
298
299 for (i = 0; i < cp->max_cid_space; i++) {
300 if (cp->ctx_tbl[i].cid == cid) {
301 *l5_cid = i;
302 return 0;
303 }
304 }
305 return -EINVAL;
306 }
307
308 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
309 struct cnic_sock *csk)
310 {
311 struct iscsi_path path_req;
312 char *buf = NULL;
313 u16 len = 0;
314 u32 msg_type = ISCSI_KEVENT_IF_DOWN;
315 struct cnic_ulp_ops *ulp_ops;
316 struct cnic_uio_dev *udev = cp->udev;
317 int rc = 0, retry = 0;
318
319 if (!udev || udev->uio_dev == -1)
320 return -ENODEV;
321
322 if (csk) {
323 len = sizeof(path_req);
324 buf = (char *) &path_req;
325 memset(&path_req, 0, len);
326
327 msg_type = ISCSI_KEVENT_PATH_REQ;
328 path_req.handle = (u64) csk->l5_cid;
329 if (test_bit(SK_F_IPV6, &csk->flags)) {
330 memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
331 sizeof(struct in6_addr));
332 path_req.ip_addr_len = 16;
333 } else {
334 memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
335 sizeof(struct in_addr));
336 path_req.ip_addr_len = 4;
337 }
338 path_req.vlan_id = csk->vlan_id;
339 path_req.pmtu = csk->mtu;
340 }
341
342 while (retry < 3) {
343 rc = 0;
344 rcu_read_lock();
345 ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
346 if (ulp_ops)
347 rc = ulp_ops->iscsi_nl_send_msg(
348 cp->ulp_handle[CNIC_ULP_ISCSI],
349 msg_type, buf, len);
350 rcu_read_unlock();
351 if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
352 break;
353
354 msleep(100);
355 retry++;
356 }
357 return rc;
358 }
359
360 static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
361
362 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
363 char *buf, u16 len)
364 {
365 int rc = -EINVAL;
366
367 switch (msg_type) {
368 case ISCSI_UEVENT_PATH_UPDATE: {
369 struct cnic_local *cp;
370 u32 l5_cid;
371 struct cnic_sock *csk;
372 struct iscsi_path *path_resp;
373
374 if (len < sizeof(*path_resp))
375 break;
376
377 path_resp = (struct iscsi_path *) buf;
378 cp = dev->cnic_priv;
379 l5_cid = (u32) path_resp->handle;
380 if (l5_cid >= MAX_CM_SK_TBL_SZ)
381 break;
382
383 rcu_read_lock();
384 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
385 rc = -ENODEV;
386 rcu_read_unlock();
387 break;
388 }
389 csk = &cp->csk_tbl[l5_cid];
390 csk_hold(csk);
391 if (cnic_in_use(csk) &&
392 test_bit(SK_F_CONNECT_START, &csk->flags)) {
393
394 csk->vlan_id = path_resp->vlan_id;
395
396 memcpy(csk->ha, path_resp->mac_addr, ETH_ALEN);
397 if (test_bit(SK_F_IPV6, &csk->flags))
398 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
399 sizeof(struct in6_addr));
400 else
401 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
402 sizeof(struct in_addr));
403
404 if (is_valid_ether_addr(csk->ha)) {
405 cnic_cm_set_pg(csk);
406 } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
407 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
408
409 cnic_cm_upcall(cp, csk,
410 L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
411 clear_bit(SK_F_CONNECT_START, &csk->flags);
412 }
413 }
414 csk_put(csk);
415 rcu_read_unlock();
416 rc = 0;
417 }
418 }
419
420 return rc;
421 }
422
423 static int cnic_offld_prep(struct cnic_sock *csk)
424 {
425 if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
426 return 0;
427
428 if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
429 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
430 return 0;
431 }
432
433 return 1;
434 }
435
436 static int cnic_close_prep(struct cnic_sock *csk)
437 {
438 clear_bit(SK_F_CONNECT_START, &csk->flags);
439 smp_mb__after_clear_bit();
440
441 if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
442 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
443 msleep(1);
444
445 return 1;
446 }
447 return 0;
448 }
449
450 static int cnic_abort_prep(struct cnic_sock *csk)
451 {
452 clear_bit(SK_F_CONNECT_START, &csk->flags);
453 smp_mb__after_clear_bit();
454
455 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
456 msleep(1);
457
458 if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
459 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
460 return 1;
461 }
462
463 return 0;
464 }
465
466 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
467 {
468 struct cnic_dev *dev;
469
470 if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
471 pr_err("%s: Bad type %d\n", __func__, ulp_type);
472 return -EINVAL;
473 }
474 mutex_lock(&cnic_lock);
475 if (cnic_ulp_tbl_prot(ulp_type)) {
476 pr_err("%s: Type %d has already been registered\n",
477 __func__, ulp_type);
478 mutex_unlock(&cnic_lock);
479 return -EBUSY;
480 }
481
482 read_lock(&cnic_dev_lock);
483 list_for_each_entry(dev, &cnic_dev_list, list) {
484 struct cnic_local *cp = dev->cnic_priv;
485
486 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
487 }
488 read_unlock(&cnic_dev_lock);
489
490 atomic_set(&ulp_ops->ref_count, 0);
491 rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
492 mutex_unlock(&cnic_lock);
493
494 /* Prevent race conditions with netdev_event */
495 rtnl_lock();
496 list_for_each_entry(dev, &cnic_dev_list, list) {
497 struct cnic_local *cp = dev->cnic_priv;
498
499 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
500 ulp_ops->cnic_init(dev);
501 }
502 rtnl_unlock();
503
504 return 0;
505 }
506
507 int cnic_unregister_driver(int ulp_type)
508 {
509 struct cnic_dev *dev;
510 struct cnic_ulp_ops *ulp_ops;
511 int i = 0;
512
513 if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
514 pr_err("%s: Bad type %d\n", __func__, ulp_type);
515 return -EINVAL;
516 }
517 mutex_lock(&cnic_lock);
518 ulp_ops = cnic_ulp_tbl_prot(ulp_type);
519 if (!ulp_ops) {
520 pr_err("%s: Type %d has not been registered\n",
521 __func__, ulp_type);
522 goto out_unlock;
523 }
524 read_lock(&cnic_dev_lock);
525 list_for_each_entry(dev, &cnic_dev_list, list) {
526 struct cnic_local *cp = dev->cnic_priv;
527
528 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
529 pr_err("%s: Type %d still has devices registered\n",
530 __func__, ulp_type);
531 read_unlock(&cnic_dev_lock);
532 goto out_unlock;
533 }
534 }
535 read_unlock(&cnic_dev_lock);
536
537 RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);
538
539 mutex_unlock(&cnic_lock);
540 synchronize_rcu();
541 while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
542 msleep(100);
543 i++;
544 }
545
546 if (atomic_read(&ulp_ops->ref_count) != 0)
547 pr_warn("%s: Failed waiting for ref count to go to zero\n",
548 __func__);
549 return 0;
550
551 out_unlock:
552 mutex_unlock(&cnic_lock);
553 return -EINVAL;
554 }
555
556 static int cnic_start_hw(struct cnic_dev *);
557 static void cnic_stop_hw(struct cnic_dev *);
558
559 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
560 void *ulp_ctx)
561 {
562 struct cnic_local *cp = dev->cnic_priv;
563 struct cnic_ulp_ops *ulp_ops;
564
565 if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
566 pr_err("%s: Bad type %d\n", __func__, ulp_type);
567 return -EINVAL;
568 }
569 mutex_lock(&cnic_lock);
570 if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
571 pr_err("%s: Driver with type %d has not been registered\n",
572 __func__, ulp_type);
573 mutex_unlock(&cnic_lock);
574 return -EAGAIN;
575 }
576 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
577 pr_err("%s: Type %d has already been registered to this device\n",
578 __func__, ulp_type);
579 mutex_unlock(&cnic_lock);
580 return -EBUSY;
581 }
582
583 clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
584 cp->ulp_handle[ulp_type] = ulp_ctx;
585 ulp_ops = cnic_ulp_tbl_prot(ulp_type);
586 rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
587 cnic_hold(dev);
588
589 if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
590 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
591 ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
592
593 mutex_unlock(&cnic_lock);
594
595 cnic_ulp_ctl(dev, ulp_type, true);
596
597 return 0;
598
599 }
600 EXPORT_SYMBOL(cnic_register_driver);
601
602 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
603 {
604 struct cnic_local *cp = dev->cnic_priv;
605 int i = 0;
606
607 if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
608 pr_err("%s: Bad type %d\n", __func__, ulp_type);
609 return -EINVAL;
610 }
611 mutex_lock(&cnic_lock);
612 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
613 RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
614 cnic_put(dev);
615 } else {
616 pr_err("%s: device not registered to this ulp type %d\n",
617 __func__, ulp_type);
618 mutex_unlock(&cnic_lock);
619 return -EINVAL;
620 }
621 mutex_unlock(&cnic_lock);
622
623 if (ulp_type == CNIC_ULP_ISCSI)
624 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
625 else if (ulp_type == CNIC_ULP_FCOE)
626 dev->fcoe_cap = NULL;
627
628 synchronize_rcu();
629
630 while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
631 i < 20) {
632 msleep(100);
633 i++;
634 }
635 if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
636 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
637
638 cnic_ulp_ctl(dev, ulp_type, false);
639
640 return 0;
641 }
642 EXPORT_SYMBOL(cnic_unregister_driver);
643
644 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
645 u32 next)
646 {
647 id_tbl->start = start_id;
648 id_tbl->max = size;
649 id_tbl->next = next;
650 spin_lock_init(&id_tbl->lock);
651 id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
652 if (!id_tbl->table)
653 return -ENOMEM;
654
655 return 0;
656 }
657
658 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
659 {
660 kfree(id_tbl->table);
661 id_tbl->table = NULL;
662 }
663
664 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
665 {
666 int ret = -1;
667
668 id -= id_tbl->start;
669 if (id >= id_tbl->max)
670 return ret;
671
672 spin_lock(&id_tbl->lock);
673 if (!test_bit(id, id_tbl->table)) {
674 set_bit(id, id_tbl->table);
675 ret = 0;
676 }
677 spin_unlock(&id_tbl->lock);
678 return ret;
679 }
680
681 /* Returns -1 if not successful */
682 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
683 {
684 u32 id;
685
686 spin_lock(&id_tbl->lock);
687 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
688 if (id >= id_tbl->max) {
689 id = -1;
690 if (id_tbl->next != 0) {
691 id = find_first_zero_bit(id_tbl->table, id_tbl->next);
692 if (id >= id_tbl->next)
693 id = -1;
694 }
695 }
696
697 if (id < id_tbl->max) {
698 set_bit(id, id_tbl->table);
699 id_tbl->next = (id + 1) & (id_tbl->max - 1);
700 id += id_tbl->start;
701 }
702
703 spin_unlock(&id_tbl->lock);
704
705 return id;
706 }
707
708 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
709 {
710 if (id == -1)
711 return;
712
713 id -= id_tbl->start;
714 if (id >= id_tbl->max)
715 return;
716
717 clear_bit(id, id_tbl->table);
718 }
719
720 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
721 {
722 int i;
723
724 if (!dma->pg_arr)
725 return;
726
727 for (i = 0; i < dma->num_pages; i++) {
728 if (dma->pg_arr[i]) {
729 dma_free_coherent(&dev->pcidev->dev, BNX2_PAGE_SIZE,
730 dma->pg_arr[i], dma->pg_map_arr[i]);
731 dma->pg_arr[i] = NULL;
732 }
733 }
734 if (dma->pgtbl) {
735 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
736 dma->pgtbl, dma->pgtbl_map);
737 dma->pgtbl = NULL;
738 }
739 kfree(dma->pg_arr);
740 dma->pg_arr = NULL;
741 dma->num_pages = 0;
742 }
743
744 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
745 {
746 int i;
747 __le32 *page_table = (__le32 *) dma->pgtbl;
748
749 for (i = 0; i < dma->num_pages; i++) {
750 /* Each entry needs to be in big endian format. */
751 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
752 page_table++;
753 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
754 page_table++;
755 }
756 }
757
758 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
759 {
760 int i;
761 __le32 *page_table = (__le32 *) dma->pgtbl;
762
763 for (i = 0; i < dma->num_pages; i++) {
764 /* Each entry needs to be in little endian format. */
765 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
766 page_table++;
767 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
768 page_table++;
769 }
770 }
771
772 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
773 int pages, int use_pg_tbl)
774 {
775 int i, size;
776 struct cnic_local *cp = dev->cnic_priv;
777
778 size = pages * (sizeof(void *) + sizeof(dma_addr_t));
779 dma->pg_arr = kzalloc(size, GFP_ATOMIC);
780 if (dma->pg_arr == NULL)
781 return -ENOMEM;
782
783 dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
784 dma->num_pages = pages;
785
786 for (i = 0; i < pages; i++) {
787 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
788 BNX2_PAGE_SIZE,
789 &dma->pg_map_arr[i],
790 GFP_ATOMIC);
791 if (dma->pg_arr[i] == NULL)
792 goto error;
793 }
794 if (!use_pg_tbl)
795 return 0;
796
797 dma->pgtbl_size = ((pages * 8) + BNX2_PAGE_SIZE - 1) &
798 ~(BNX2_PAGE_SIZE - 1);
799 dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
800 &dma->pgtbl_map, GFP_ATOMIC);
801 if (dma->pgtbl == NULL)
802 goto error;
803
804 cp->setup_pgtbl(dev, dma);
805
806 return 0;
807
808 error:
809 cnic_free_dma(dev, dma);
810 return -ENOMEM;
811 }
812
813 static void cnic_free_context(struct cnic_dev *dev)
814 {
815 struct cnic_local *cp = dev->cnic_priv;
816 int i;
817
818 for (i = 0; i < cp->ctx_blks; i++) {
819 if (cp->ctx_arr[i].ctx) {
820 dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
821 cp->ctx_arr[i].ctx,
822 cp->ctx_arr[i].mapping);
823 cp->ctx_arr[i].ctx = NULL;
824 }
825 }
826 }
827
828 static void __cnic_free_uio_rings(struct cnic_uio_dev *udev)
829 {
830 if (udev->l2_buf) {
831 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
832 udev->l2_buf, udev->l2_buf_map);
833 udev->l2_buf = NULL;
834 }
835
836 if (udev->l2_ring) {
837 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
838 udev->l2_ring, udev->l2_ring_map);
839 udev->l2_ring = NULL;
840 }
841
842 }
843
844 static void __cnic_free_uio(struct cnic_uio_dev *udev)
845 {
846 uio_unregister_device(&udev->cnic_uinfo);
847
848 __cnic_free_uio_rings(udev);
849
850 pci_dev_put(udev->pdev);
851 kfree(udev);
852 }
853
854 static void cnic_free_uio(struct cnic_uio_dev *udev)
855 {
856 if (!udev)
857 return;
858
859 write_lock(&cnic_dev_lock);
860 list_del_init(&udev->list);
861 write_unlock(&cnic_dev_lock);
862 __cnic_free_uio(udev);
863 }
864
865 static void cnic_free_resc(struct cnic_dev *dev)
866 {
867 struct cnic_local *cp = dev->cnic_priv;
868 struct cnic_uio_dev *udev = cp->udev;
869
870 if (udev) {
871 udev->dev = NULL;
872 cp->udev = NULL;
873 if (udev->uio_dev == -1)
874 __cnic_free_uio_rings(udev);
875 }
876
877 cnic_free_context(dev);
878 kfree(cp->ctx_arr);
879 cp->ctx_arr = NULL;
880 cp->ctx_blks = 0;
881
882 cnic_free_dma(dev, &cp->gbl_buf_info);
883 cnic_free_dma(dev, &cp->kwq_info);
884 cnic_free_dma(dev, &cp->kwq_16_data_info);
885 cnic_free_dma(dev, &cp->kcq2.dma);
886 cnic_free_dma(dev, &cp->kcq1.dma);
887 kfree(cp->iscsi_tbl);
888 cp->iscsi_tbl = NULL;
889 kfree(cp->ctx_tbl);
890 cp->ctx_tbl = NULL;
891
892 cnic_free_id_tbl(&cp->fcoe_cid_tbl);
893 cnic_free_id_tbl(&cp->cid_tbl);
894 }
895
896 static int cnic_alloc_context(struct cnic_dev *dev)
897 {
898 struct cnic_local *cp = dev->cnic_priv;
899
900 if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
901 int i, k, arr_size;
902
903 cp->ctx_blk_size = BNX2_PAGE_SIZE;
904 cp->cids_per_blk = BNX2_PAGE_SIZE / 128;
905 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
906 sizeof(struct cnic_ctx);
907 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
908 if (cp->ctx_arr == NULL)
909 return -ENOMEM;
910
911 k = 0;
912 for (i = 0; i < 2; i++) {
913 u32 j, reg, off, lo, hi;
914
915 if (i == 0)
916 off = BNX2_PG_CTX_MAP;
917 else
918 off = BNX2_ISCSI_CTX_MAP;
919
920 reg = cnic_reg_rd_ind(dev, off);
921 lo = reg >> 16;
922 hi = reg & 0xffff;
923 for (j = lo; j < hi; j += cp->cids_per_blk, k++)
924 cp->ctx_arr[k].cid = j;
925 }
926
927 cp->ctx_blks = k;
928 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
929 cp->ctx_blks = 0;
930 return -ENOMEM;
931 }
932
933 for (i = 0; i < cp->ctx_blks; i++) {
934 cp->ctx_arr[i].ctx =
935 dma_alloc_coherent(&dev->pcidev->dev,
936 BNX2_PAGE_SIZE,
937 &cp->ctx_arr[i].mapping,
938 GFP_KERNEL);
939 if (cp->ctx_arr[i].ctx == NULL)
940 return -ENOMEM;
941 }
942 }
943 return 0;
944 }
945
946 static u16 cnic_bnx2_next_idx(u16 idx)
947 {
948 return idx + 1;
949 }
950
951 static u16 cnic_bnx2_hw_idx(u16 idx)
952 {
953 return idx;
954 }
955
956 static u16 cnic_bnx2x_next_idx(u16 idx)
957 {
958 idx++;
959 if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
960 idx++;
961
962 return idx;
963 }
964
965 static u16 cnic_bnx2x_hw_idx(u16 idx)
966 {
967 if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
968 idx++;
969 return idx;
970 }
971
972 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
973 bool use_pg_tbl)
974 {
975 int err, i, use_page_tbl = 0;
976 struct kcqe **kcq;
977
978 if (use_pg_tbl)
979 use_page_tbl = 1;
980
981 err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
982 if (err)
983 return err;
984
985 kcq = (struct kcqe **) info->dma.pg_arr;
986 info->kcq = kcq;
987
988 info->next_idx = cnic_bnx2_next_idx;
989 info->hw_idx = cnic_bnx2_hw_idx;
990 if (use_pg_tbl)
991 return 0;
992
993 info->next_idx = cnic_bnx2x_next_idx;
994 info->hw_idx = cnic_bnx2x_hw_idx;
995
996 for (i = 0; i < KCQ_PAGE_CNT; i++) {
997 struct bnx2x_bd_chain_next *next =
998 (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
999 int j = i + 1;
1000
1001 if (j >= KCQ_PAGE_CNT)
1002 j = 0;
1003 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
1004 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
1005 }
1006 return 0;
1007 }
1008
1009 static int __cnic_alloc_uio_rings(struct cnic_uio_dev *udev, int pages)
1010 {
1011 struct cnic_local *cp = udev->dev->cnic_priv;
1012
1013 if (udev->l2_ring)
1014 return 0;
1015
1016 udev->l2_ring_size = pages * BNX2_PAGE_SIZE;
1017 udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
1018 &udev->l2_ring_map,
1019 GFP_KERNEL | __GFP_COMP);
1020 if (!udev->l2_ring)
1021 return -ENOMEM;
1022
1023 udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
1024 udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
1025 udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1026 &udev->l2_buf_map,
1027 GFP_KERNEL | __GFP_COMP);
1028 if (!udev->l2_buf) {
1029 __cnic_free_uio_rings(udev);
1030 return -ENOMEM;
1031 }
1032
1033 return 0;
1034
1035 }
1036
1037 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
1038 {
1039 struct cnic_local *cp = dev->cnic_priv;
1040 struct cnic_uio_dev *udev;
1041
1042 read_lock(&cnic_dev_lock);
1043 list_for_each_entry(udev, &cnic_udev_list, list) {
1044 if (udev->pdev == dev->pcidev) {
1045 udev->dev = dev;
1046 if (__cnic_alloc_uio_rings(udev, pages)) {
1047 udev->dev = NULL;
1048 read_unlock(&cnic_dev_lock);
1049 return -ENOMEM;
1050 }
1051 cp->udev = udev;
1052 read_unlock(&cnic_dev_lock);
1053 return 0;
1054 }
1055 }
1056 read_unlock(&cnic_dev_lock);
1057
1058 udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
1059 if (!udev)
1060 return -ENOMEM;
1061
1062 udev->uio_dev = -1;
1063
1064 udev->dev = dev;
1065 udev->pdev = dev->pcidev;
1066
1067 if (__cnic_alloc_uio_rings(udev, pages))
1068 goto err_udev;
1069
1070 write_lock(&cnic_dev_lock);
1071 list_add(&udev->list, &cnic_udev_list);
1072 write_unlock(&cnic_dev_lock);
1073
1074 pci_dev_get(udev->pdev);
1075
1076 cp->udev = udev;
1077
1078 return 0;
1079
1080 err_udev:
1081 kfree(udev);
1082 return -ENOMEM;
1083 }
1084
1085 static int cnic_init_uio(struct cnic_dev *dev)
1086 {
1087 struct cnic_local *cp = dev->cnic_priv;
1088 struct cnic_uio_dev *udev = cp->udev;
1089 struct uio_info *uinfo;
1090 int ret = 0;
1091
1092 if (!udev)
1093 return -ENOMEM;
1094
1095 uinfo = &udev->cnic_uinfo;
1096
1097 uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
1098 uinfo->mem[0].internal_addr = dev->regview;
1099 uinfo->mem[0].memtype = UIO_MEM_PHYS;
1100
1101 if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1102 uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
1103 TX_MAX_TSS_RINGS + 1);
1104 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1105 PAGE_MASK;
1106 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1107 uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1108 else
1109 uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1110
1111 uinfo->name = "bnx2_cnic";
1112 } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1113 uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);
1114
1115 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1116 PAGE_MASK;
1117 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1118
1119 uinfo->name = "bnx2x_cnic";
1120 }
1121
1122 uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1123
1124 uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1125 uinfo->mem[2].size = udev->l2_ring_size;
1126 uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1127
1128 uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1129 uinfo->mem[3].size = udev->l2_buf_size;
1130 uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1131
1132 uinfo->version = CNIC_MODULE_VERSION;
1133 uinfo->irq = UIO_IRQ_CUSTOM;
1134
1135 uinfo->open = cnic_uio_open;
1136 uinfo->release = cnic_uio_close;
1137
1138 if (udev->uio_dev == -1) {
1139 if (!uinfo->priv) {
1140 uinfo->priv = udev;
1141
1142 ret = uio_register_device(&udev->pdev->dev, uinfo);
1143 }
1144 } else {
1145 cnic_init_rings(dev);
1146 }
1147
1148 return ret;
1149 }
1150
1151 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1152 {
1153 struct cnic_local *cp = dev->cnic_priv;
1154 int ret;
1155
1156 ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1157 if (ret)
1158 goto error;
1159 cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1160
1161 ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1162 if (ret)
1163 goto error;
1164
1165 ret = cnic_alloc_context(dev);
1166 if (ret)
1167 goto error;
1168
1169 ret = cnic_alloc_uio_rings(dev, 2);
1170 if (ret)
1171 goto error;
1172
1173 ret = cnic_init_uio(dev);
1174 if (ret)
1175 goto error;
1176
1177 return 0;
1178
1179 error:
1180 cnic_free_resc(dev);
1181 return ret;
1182 }
1183
1184 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1185 {
1186 struct cnic_local *cp = dev->cnic_priv;
1187 struct bnx2x *bp = netdev_priv(dev->netdev);
1188 int ctx_blk_size = cp->ethdev->ctx_blk_size;
1189 int total_mem, blks, i;
1190
1191 total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1192 blks = total_mem / ctx_blk_size;
1193 if (total_mem % ctx_blk_size)
1194 blks++;
1195
1196 if (blks > cp->ethdev->ctx_tbl_len)
1197 return -ENOMEM;
1198
1199 cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1200 if (cp->ctx_arr == NULL)
1201 return -ENOMEM;
1202
1203 cp->ctx_blks = blks;
1204 cp->ctx_blk_size = ctx_blk_size;
1205 if (!CHIP_IS_E1(bp))
1206 cp->ctx_align = 0;
1207 else
1208 cp->ctx_align = ctx_blk_size;
1209
1210 cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1211
1212 for (i = 0; i < blks; i++) {
1213 cp->ctx_arr[i].ctx =
1214 dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1215 &cp->ctx_arr[i].mapping,
1216 GFP_KERNEL);
1217 if (cp->ctx_arr[i].ctx == NULL)
1218 return -ENOMEM;
1219
1220 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1221 if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1222 cnic_free_context(dev);
1223 cp->ctx_blk_size += cp->ctx_align;
1224 i = -1;
1225 continue;
1226 }
1227 }
1228 }
1229 return 0;
1230 }
1231
1232 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1233 {
1234 struct cnic_local *cp = dev->cnic_priv;
1235 struct bnx2x *bp = netdev_priv(dev->netdev);
1236 struct cnic_eth_dev *ethdev = cp->ethdev;
1237 u32 start_cid = ethdev->starting_cid;
1238 int i, j, n, ret, pages;
1239 struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1240
1241 cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1242 cp->iscsi_start_cid = start_cid;
1243 cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1244
1245 if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
1246 cp->max_cid_space += dev->max_fcoe_conn;
1247 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1248 if (!cp->fcoe_init_cid)
1249 cp->fcoe_init_cid = 0x10;
1250 }
1251
1252 cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1253 GFP_KERNEL);
1254 if (!cp->iscsi_tbl)
1255 goto error;
1256
1257 cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1258 cp->max_cid_space, GFP_KERNEL);
1259 if (!cp->ctx_tbl)
1260 goto error;
1261
1262 for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1263 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1264 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1265 }
1266
1267 for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1268 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1269
1270 pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1271 PAGE_SIZE;
1272
1273 ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1274 if (ret)
1275 return -ENOMEM;
1276
1277 n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1278 for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1279 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1280
1281 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1282 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1283 off;
1284
1285 if ((i % n) == (n - 1))
1286 j++;
1287 }
1288
1289 ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1290 if (ret)
1291 goto error;
1292
1293 if (CNIC_SUPPORTS_FCOE(bp)) {
1294 ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1295 if (ret)
1296 goto error;
1297 }
1298
1299 pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1300 ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1301 if (ret)
1302 goto error;
1303
1304 ret = cnic_alloc_bnx2x_context(dev);
1305 if (ret)
1306 goto error;
1307
1308 if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
1309 return 0;
1310
1311 cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1312
1313 cp->l2_rx_ring_size = 15;
1314
1315 ret = cnic_alloc_uio_rings(dev, 4);
1316 if (ret)
1317 goto error;
1318
1319 ret = cnic_init_uio(dev);
1320 if (ret)
1321 goto error;
1322
1323 return 0;
1324
1325 error:
1326 cnic_free_resc(dev);
1327 return -ENOMEM;
1328 }
1329
1330 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1331 {
1332 return cp->max_kwq_idx -
1333 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1334 }
1335
1336 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1337 u32 num_wqes)
1338 {
1339 struct cnic_local *cp = dev->cnic_priv;
1340 struct kwqe *prod_qe;
1341 u16 prod, sw_prod, i;
1342
1343 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1344 return -EAGAIN; /* bnx2 is down */
1345
1346 spin_lock_bh(&cp->cnic_ulp_lock);
1347 if (num_wqes > cnic_kwq_avail(cp) &&
1348 !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1349 spin_unlock_bh(&cp->cnic_ulp_lock);
1350 return -EAGAIN;
1351 }
1352
1353 clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1354
1355 prod = cp->kwq_prod_idx;
1356 sw_prod = prod & MAX_KWQ_IDX;
1357 for (i = 0; i < num_wqes; i++) {
1358 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1359 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1360 prod++;
1361 sw_prod = prod & MAX_KWQ_IDX;
1362 }
1363 cp->kwq_prod_idx = prod;
1364
1365 CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1366
1367 spin_unlock_bh(&cp->cnic_ulp_lock);
1368 return 0;
1369 }
1370
1371 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1372 union l5cm_specific_data *l5_data)
1373 {
1374 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1375 dma_addr_t map;
1376
1377 map = ctx->kwqe_data_mapping;
1378 l5_data->phy_address.lo = (u64) map & 0xffffffff;
1379 l5_data->phy_address.hi = (u64) map >> 32;
1380 return ctx->kwqe_data;
1381 }
1382
1383 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1384 u32 type, union l5cm_specific_data *l5_data)
1385 {
1386 struct cnic_local *cp = dev->cnic_priv;
1387 struct bnx2x *bp = netdev_priv(dev->netdev);
1388 struct l5cm_spe kwqe;
1389 struct kwqe_16 *kwq[1];
1390 u16 type_16;
1391 int ret;
1392
1393 kwqe.hdr.conn_and_cmd_data =
1394 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1395 BNX2X_HW_CID(bp, cid)));
1396
1397 type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1398 type_16 |= (bp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1399 SPE_HDR_FUNCTION_ID;
1400
1401 kwqe.hdr.type = cpu_to_le16(type_16);
1402 kwqe.hdr.reserved1 = 0;
1403 kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1404 kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1405
1406 kwq[0] = (struct kwqe_16 *) &kwqe;
1407
1408 spin_lock_bh(&cp->cnic_ulp_lock);
1409 ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1410 spin_unlock_bh(&cp->cnic_ulp_lock);
1411
1412 if (ret == 1)
1413 return 0;
1414
1415 return ret;
1416 }
1417
1418 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1419 struct kcqe *cqes[], u32 num_cqes)
1420 {
1421 struct cnic_local *cp = dev->cnic_priv;
1422 struct cnic_ulp_ops *ulp_ops;
1423
1424 rcu_read_lock();
1425 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1426 if (likely(ulp_ops)) {
1427 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1428 cqes, num_cqes);
1429 }
1430 rcu_read_unlock();
1431 }
1432
1433 static void cnic_bnx2x_set_tcp_options(struct cnic_dev *dev, int time_stamps,
1434 int en_tcp_dack)
1435 {
1436 struct bnx2x *bp = netdev_priv(dev->netdev);
1437 u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1438 u16 tstorm_flags = 0;
1439
1440 if (time_stamps) {
1441 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1442 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1443 }
1444 if (en_tcp_dack)
1445 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_DELAYED_ACK_EN;
1446
1447 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1448 XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), xstorm_flags);
1449
1450 CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1451 TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), tstorm_flags);
1452 }
1453
1454 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1455 {
1456 struct cnic_local *cp = dev->cnic_priv;
1457 struct bnx2x *bp = netdev_priv(dev->netdev);
1458 struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1459 int hq_bds, pages;
1460 u32 pfid = bp->pfid;
1461
1462 cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1463 cp->num_ccells = req1->num_ccells_per_conn;
1464 cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1465 cp->num_iscsi_tasks;
1466 cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1467 BNX2X_ISCSI_R2TQE_SIZE;
1468 cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1469 pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1470 hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1471 cp->num_cqs = req1->num_cqs;
1472
1473 if (!dev->max_iscsi_conn)
1474 return 0;
1475
1476 /* init Tstorm RAM */
1477 CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1478 req1->rq_num_wqes);
1479 CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1480 PAGE_SIZE);
1481 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1482 TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1483 CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1484 TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1485 req1->num_tasks_per_conn);
1486
1487 /* init Ustorm RAM */
1488 CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1489 USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1490 req1->rq_buffer_size);
1491 CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1492 PAGE_SIZE);
1493 CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1494 USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1495 CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1496 USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1497 req1->num_tasks_per_conn);
1498 CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1499 req1->rq_num_wqes);
1500 CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1501 req1->cq_num_wqes);
1502 CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1503 cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1504
1505 /* init Xstorm RAM */
1506 CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1507 PAGE_SIZE);
1508 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1509 XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1510 CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1511 XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1512 req1->num_tasks_per_conn);
1513 CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1514 hq_bds);
1515 CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1516 req1->num_tasks_per_conn);
1517 CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1518 cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1519
1520 /* init Cstorm RAM */
1521 CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1522 PAGE_SIZE);
1523 CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1524 CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1525 CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1526 CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1527 req1->num_tasks_per_conn);
1528 CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1529 req1->cq_num_wqes);
1530 CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1531 hq_bds);
1532
1533 cnic_bnx2x_set_tcp_options(dev,
1534 req1->flags & ISCSI_KWQE_INIT1_TIME_STAMPS_ENABLE,
1535 req1->flags & ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE);
1536
1537 return 0;
1538 }
1539
1540 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1541 {
1542 struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1543 struct bnx2x *bp = netdev_priv(dev->netdev);
1544 u32 pfid = bp->pfid;
1545 struct iscsi_kcqe kcqe;
1546 struct kcqe *cqes[1];
1547
1548 memset(&kcqe, 0, sizeof(kcqe));
1549 if (!dev->max_iscsi_conn) {
1550 kcqe.completion_status =
1551 ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1552 goto done;
1553 }
1554
1555 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1556 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1557 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1558 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1559 req2->error_bit_map[1]);
1560
1561 CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1562 USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1563 CNIC_WR(dev, BAR_USTRORM_INTMEM +
1564 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1565 CNIC_WR(dev, BAR_USTRORM_INTMEM +
1566 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1567 req2->error_bit_map[1]);
1568
1569 CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1570 CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1571
1572 kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1573
1574 done:
1575 kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1576 cqes[0] = (struct kcqe *) &kcqe;
1577 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1578
1579 return 0;
1580 }
1581
1582 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1583 {
1584 struct cnic_local *cp = dev->cnic_priv;
1585 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1586
1587 if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1588 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1589
1590 cnic_free_dma(dev, &iscsi->hq_info);
1591 cnic_free_dma(dev, &iscsi->r2tq_info);
1592 cnic_free_dma(dev, &iscsi->task_array_info);
1593 cnic_free_id(&cp->cid_tbl, ctx->cid);
1594 } else {
1595 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1596 }
1597
1598 ctx->cid = 0;
1599 }
1600
1601 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1602 {
1603 u32 cid;
1604 int ret, pages;
1605 struct cnic_local *cp = dev->cnic_priv;
1606 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1607 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1608
1609 if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1610 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1611 if (cid == -1) {
1612 ret = -ENOMEM;
1613 goto error;
1614 }
1615 ctx->cid = cid;
1616 return 0;
1617 }
1618
1619 cid = cnic_alloc_new_id(&cp->cid_tbl);
1620 if (cid == -1) {
1621 ret = -ENOMEM;
1622 goto error;
1623 }
1624
1625 ctx->cid = cid;
1626 pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1627
1628 ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1629 if (ret)
1630 goto error;
1631
1632 pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1633 ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1634 if (ret)
1635 goto error;
1636
1637 pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1638 ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1639 if (ret)
1640 goto error;
1641
1642 return 0;
1643
1644 error:
1645 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1646 return ret;
1647 }
1648
1649 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1650 struct regpair *ctx_addr)
1651 {
1652 struct cnic_local *cp = dev->cnic_priv;
1653 struct cnic_eth_dev *ethdev = cp->ethdev;
1654 int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1655 int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1656 unsigned long align_off = 0;
1657 dma_addr_t ctx_map;
1658 void *ctx;
1659
1660 if (cp->ctx_align) {
1661 unsigned long mask = cp->ctx_align - 1;
1662
1663 if (cp->ctx_arr[blk].mapping & mask)
1664 align_off = cp->ctx_align -
1665 (cp->ctx_arr[blk].mapping & mask);
1666 }
1667 ctx_map = cp->ctx_arr[blk].mapping + align_off +
1668 (off * BNX2X_CONTEXT_MEM_SIZE);
1669 ctx = cp->ctx_arr[blk].ctx + align_off +
1670 (off * BNX2X_CONTEXT_MEM_SIZE);
1671 if (init)
1672 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1673
1674 ctx_addr->lo = ctx_map & 0xffffffff;
1675 ctx_addr->hi = (u64) ctx_map >> 32;
1676 return ctx;
1677 }
1678
1679 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1680 u32 num)
1681 {
1682 struct cnic_local *cp = dev->cnic_priv;
1683 struct bnx2x *bp = netdev_priv(dev->netdev);
1684 struct iscsi_kwqe_conn_offload1 *req1 =
1685 (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1686 struct iscsi_kwqe_conn_offload2 *req2 =
1687 (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1688 struct iscsi_kwqe_conn_offload3 *req3;
1689 struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1690 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1691 u32 cid = ctx->cid;
1692 u32 hw_cid = BNX2X_HW_CID(bp, cid);
1693 struct iscsi_context *ictx;
1694 struct regpair context_addr;
1695 int i, j, n = 2, n_max;
1696 u8 port = BP_PORT(bp);
1697
1698 ctx->ctx_flags = 0;
1699 if (!req2->num_additional_wqes)
1700 return -EINVAL;
1701
1702 n_max = req2->num_additional_wqes + 2;
1703
1704 ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1705 if (ictx == NULL)
1706 return -ENOMEM;
1707
1708 req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1709
1710 ictx->xstorm_ag_context.hq_prod = 1;
1711
1712 ictx->xstorm_st_context.iscsi.first_burst_length =
1713 ISCSI_DEF_FIRST_BURST_LEN;
1714 ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1715 ISCSI_DEF_MAX_RECV_SEG_LEN;
1716 ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1717 req1->sq_page_table_addr_lo;
1718 ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1719 req1->sq_page_table_addr_hi;
1720 ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1721 ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1722 ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1723 iscsi->hq_info.pgtbl_map & 0xffffffff;
1724 ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1725 (u64) iscsi->hq_info.pgtbl_map >> 32;
1726 ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1727 iscsi->hq_info.pgtbl[0];
1728 ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1729 iscsi->hq_info.pgtbl[1];
1730 ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1731 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1732 ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1733 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1734 ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1735 iscsi->r2tq_info.pgtbl[0];
1736 ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1737 iscsi->r2tq_info.pgtbl[1];
1738 ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1739 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1740 ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1741 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1742 ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1743 BNX2X_ISCSI_PBL_NOT_CACHED;
1744 ictx->xstorm_st_context.iscsi.flags.flags |=
1745 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1746 ictx->xstorm_st_context.iscsi.flags.flags |=
1747 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1748 ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1749 ETH_P_8021Q;
1750 if (BNX2X_CHIP_IS_E2_PLUS(bp) &&
1751 bp->common.chip_port_mode == CHIP_2_PORT_MODE) {
1752
1753 port = 0;
1754 }
1755 ictx->xstorm_st_context.common.flags =
1756 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1757 ictx->xstorm_st_context.common.flags =
1758 port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1759
1760 ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1761 /* TSTORM requires the base address of RQ DB & not PTE */
1762 ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1763 req2->rq_page_table_addr_lo & PAGE_MASK;
1764 ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1765 req2->rq_page_table_addr_hi;
1766 ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1767 ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1768 ictx->tstorm_st_context.tcp.flags2 |=
1769 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1770 ictx->tstorm_st_context.tcp.ooo_support_mode =
1771 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1772
1773 ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1774
1775 ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1776 req2->rq_page_table_addr_lo;
1777 ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1778 req2->rq_page_table_addr_hi;
1779 ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1780 ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1781 ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1782 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1783 ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1784 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1785 ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1786 iscsi->r2tq_info.pgtbl[0];
1787 ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1788 iscsi->r2tq_info.pgtbl[1];
1789 ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1790 req1->cq_page_table_addr_lo;
1791 ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1792 req1->cq_page_table_addr_hi;
1793 ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1794 ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1795 ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1796 ictx->ustorm_st_context.task_pbe_cache_index =
1797 BNX2X_ISCSI_PBL_NOT_CACHED;
1798 ictx->ustorm_st_context.task_pdu_cache_index =
1799 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1800
1801 for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1802 if (j == 3) {
1803 if (n >= n_max)
1804 break;
1805 req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1806 j = 0;
1807 }
1808 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1809 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1810 req3->qp_first_pte[j].hi;
1811 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1812 req3->qp_first_pte[j].lo;
1813 }
1814
1815 ictx->ustorm_st_context.task_pbl_base.lo =
1816 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1817 ictx->ustorm_st_context.task_pbl_base.hi =
1818 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1819 ictx->ustorm_st_context.tce_phy_addr.lo =
1820 iscsi->task_array_info.pgtbl[0];
1821 ictx->ustorm_st_context.tce_phy_addr.hi =
1822 iscsi->task_array_info.pgtbl[1];
1823 ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1824 ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1825 ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1826 ictx->ustorm_st_context.negotiated_rx_and_flags |=
1827 ISCSI_DEF_MAX_BURST_LEN;
1828 ictx->ustorm_st_context.negotiated_rx |=
1829 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1830 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1831
1832 ictx->cstorm_st_context.hq_pbl_base.lo =
1833 iscsi->hq_info.pgtbl_map & 0xffffffff;
1834 ictx->cstorm_st_context.hq_pbl_base.hi =
1835 (u64) iscsi->hq_info.pgtbl_map >> 32;
1836 ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1837 ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1838 ictx->cstorm_st_context.task_pbl_base.lo =
1839 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1840 ictx->cstorm_st_context.task_pbl_base.hi =
1841 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1842 /* CSTORM and USTORM initialization is different, CSTORM requires
1843 * CQ DB base & not PTE addr */
1844 ictx->cstorm_st_context.cq_db_base.lo =
1845 req1->cq_page_table_addr_lo & PAGE_MASK;
1846 ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1847 ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1848 ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1849 for (i = 0; i < cp->num_cqs; i++) {
1850 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1851 ISCSI_INITIAL_SN;
1852 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1853 ISCSI_INITIAL_SN;
1854 }
1855
1856 ictx->xstorm_ag_context.cdu_reserved =
1857 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1858 ISCSI_CONNECTION_TYPE);
1859 ictx->ustorm_ag_context.cdu_usage =
1860 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1861 ISCSI_CONNECTION_TYPE);
1862 return 0;
1863
1864 }
1865
1866 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1867 u32 num, int *work)
1868 {
1869 struct iscsi_kwqe_conn_offload1 *req1;
1870 struct iscsi_kwqe_conn_offload2 *req2;
1871 struct cnic_local *cp = dev->cnic_priv;
1872 struct bnx2x *bp = netdev_priv(dev->netdev);
1873 struct cnic_context *ctx;
1874 struct iscsi_kcqe kcqe;
1875 struct kcqe *cqes[1];
1876 u32 l5_cid;
1877 int ret = 0;
1878
1879 if (num < 2) {
1880 *work = num;
1881 return -EINVAL;
1882 }
1883
1884 req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1885 req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1886 if ((num - 2) < req2->num_additional_wqes) {
1887 *work = num;
1888 return -EINVAL;
1889 }
1890 *work = 2 + req2->num_additional_wqes;
1891
1892 l5_cid = req1->iscsi_conn_id;
1893 if (l5_cid >= MAX_ISCSI_TBL_SZ)
1894 return -EINVAL;
1895
1896 memset(&kcqe, 0, sizeof(kcqe));
1897 kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1898 kcqe.iscsi_conn_id = l5_cid;
1899 kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1900
1901 ctx = &cp->ctx_tbl[l5_cid];
1902 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1903 kcqe.completion_status =
1904 ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1905 goto done;
1906 }
1907
1908 if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1909 atomic_dec(&cp->iscsi_conn);
1910 goto done;
1911 }
1912 ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1913 if (ret) {
1914 atomic_dec(&cp->iscsi_conn);
1915 ret = 0;
1916 goto done;
1917 }
1918 ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1919 if (ret < 0) {
1920 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1921 atomic_dec(&cp->iscsi_conn);
1922 goto done;
1923 }
1924
1925 kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1926 kcqe.iscsi_conn_context_id = BNX2X_HW_CID(bp, cp->ctx_tbl[l5_cid].cid);
1927
1928 done:
1929 cqes[0] = (struct kcqe *) &kcqe;
1930 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1931 return 0;
1932 }
1933
1934
1935 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1936 {
1937 struct cnic_local *cp = dev->cnic_priv;
1938 struct iscsi_kwqe_conn_update *req =
1939 (struct iscsi_kwqe_conn_update *) kwqe;
1940 void *data;
1941 union l5cm_specific_data l5_data;
1942 u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1943 int ret;
1944
1945 if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1946 return -EINVAL;
1947
1948 data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1949 if (!data)
1950 return -ENOMEM;
1951
1952 memcpy(data, kwqe, sizeof(struct kwqe));
1953
1954 ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1955 req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1956 return ret;
1957 }
1958
1959 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1960 {
1961 struct cnic_local *cp = dev->cnic_priv;
1962 struct bnx2x *bp = netdev_priv(dev->netdev);
1963 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1964 union l5cm_specific_data l5_data;
1965 int ret;
1966 u32 hw_cid;
1967
1968 init_waitqueue_head(&ctx->waitq);
1969 ctx->wait_cond = 0;
1970 memset(&l5_data, 0, sizeof(l5_data));
1971 hw_cid = BNX2X_HW_CID(bp, ctx->cid);
1972
1973 ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1974 hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1975
1976 if (ret == 0) {
1977 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1978 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1979 return -EBUSY;
1980 }
1981
1982 return 0;
1983 }
1984
1985 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1986 {
1987 struct cnic_local *cp = dev->cnic_priv;
1988 struct iscsi_kwqe_conn_destroy *req =
1989 (struct iscsi_kwqe_conn_destroy *) kwqe;
1990 u32 l5_cid = req->reserved0;
1991 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1992 int ret = 0;
1993 struct iscsi_kcqe kcqe;
1994 struct kcqe *cqes[1];
1995
1996 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1997 goto skip_cfc_delete;
1998
1999 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
2000 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
2001
2002 if (delta > (2 * HZ))
2003 delta = 0;
2004
2005 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2006 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
2007 goto destroy_reply;
2008 }
2009
2010 ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
2011
2012 skip_cfc_delete:
2013 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2014
2015 if (!ret) {
2016 atomic_dec(&cp->iscsi_conn);
2017 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2018 }
2019
2020 destroy_reply:
2021 memset(&kcqe, 0, sizeof(kcqe));
2022 kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
2023 kcqe.iscsi_conn_id = l5_cid;
2024 kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
2025 kcqe.iscsi_conn_context_id = req->context_id;
2026
2027 cqes[0] = (struct kcqe *) &kcqe;
2028 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
2029
2030 return 0;
2031 }
2032
2033 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
2034 struct l4_kwq_connect_req1 *kwqe1,
2035 struct l4_kwq_connect_req3 *kwqe3,
2036 struct l5cm_active_conn_buffer *conn_buf)
2037 {
2038 struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
2039 struct l5cm_xstorm_conn_buffer *xstorm_buf =
2040 &conn_buf->xstorm_conn_buffer;
2041 struct l5cm_tstorm_conn_buffer *tstorm_buf =
2042 &conn_buf->tstorm_conn_buffer;
2043 struct regpair context_addr;
2044 u32 cid = BNX2X_SW_CID(kwqe1->cid);
2045 struct in6_addr src_ip, dst_ip;
2046 int i;
2047 u32 *addrp;
2048
2049 addrp = (u32 *) &conn_addr->local_ip_addr;
2050 for (i = 0; i < 4; i++, addrp++)
2051 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2052
2053 addrp = (u32 *) &conn_addr->remote_ip_addr;
2054 for (i = 0; i < 4; i++, addrp++)
2055 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2056
2057 cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
2058
2059 xstorm_buf->context_addr.hi = context_addr.hi;
2060 xstorm_buf->context_addr.lo = context_addr.lo;
2061 xstorm_buf->mss = 0xffff;
2062 xstorm_buf->rcv_buf = kwqe3->rcv_buf;
2063 if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
2064 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
2065 xstorm_buf->pseudo_header_checksum =
2066 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
2067
2068 if (kwqe3->ka_timeout) {
2069 tstorm_buf->ka_enable = 1;
2070 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
2071 tstorm_buf->ka_interval = kwqe3->ka_interval;
2072 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
2073 }
2074 tstorm_buf->max_rt_time = 0xffffffff;
2075 }
2076
2077 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2078 {
2079 struct bnx2x *bp = netdev_priv(dev->netdev);
2080 u32 pfid = bp->pfid;
2081 u8 *mac = dev->mac_addr;
2082
2083 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2084 XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2085 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2086 XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2087 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2088 XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2089 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2090 XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2091 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2092 XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2093 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2094 XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2095
2096 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2097 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2098 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2099 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2100 mac[4]);
2101 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2102 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2103 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2104 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2105 mac[2]);
2106 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2107 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2108 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2109 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2110 mac[0]);
2111 }
2112
2113 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2114 u32 num, int *work)
2115 {
2116 struct cnic_local *cp = dev->cnic_priv;
2117 struct bnx2x *bp = netdev_priv(dev->netdev);
2118 struct l4_kwq_connect_req1 *kwqe1 =
2119 (struct l4_kwq_connect_req1 *) wqes[0];
2120 struct l4_kwq_connect_req3 *kwqe3;
2121 struct l5cm_active_conn_buffer *conn_buf;
2122 struct l5cm_conn_addr_params *conn_addr;
2123 union l5cm_specific_data l5_data;
2124 u32 l5_cid = kwqe1->pg_cid;
2125 struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2126 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2127 int ret;
2128
2129 if (num < 2) {
2130 *work = num;
2131 return -EINVAL;
2132 }
2133
2134 if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2135 *work = 3;
2136 else
2137 *work = 2;
2138
2139 if (num < *work) {
2140 *work = num;
2141 return -EINVAL;
2142 }
2143
2144 if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2145 netdev_err(dev->netdev, "conn_buf size too big\n");
2146 return -ENOMEM;
2147 }
2148 conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2149 if (!conn_buf)
2150 return -ENOMEM;
2151
2152 memset(conn_buf, 0, sizeof(*conn_buf));
2153
2154 conn_addr = &conn_buf->conn_addr_buf;
2155 conn_addr->remote_addr_0 = csk->ha[0];
2156 conn_addr->remote_addr_1 = csk->ha[1];
2157 conn_addr->remote_addr_2 = csk->ha[2];
2158 conn_addr->remote_addr_3 = csk->ha[3];
2159 conn_addr->remote_addr_4 = csk->ha[4];
2160 conn_addr->remote_addr_5 = csk->ha[5];
2161
2162 if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2163 struct l4_kwq_connect_req2 *kwqe2 =
2164 (struct l4_kwq_connect_req2 *) wqes[1];
2165
2166 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2167 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2168 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2169
2170 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2171 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2172 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2173 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2174 }
2175 kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2176
2177 conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2178 conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2179 conn_addr->local_tcp_port = kwqe1->src_port;
2180 conn_addr->remote_tcp_port = kwqe1->dst_port;
2181
2182 conn_addr->pmtu = kwqe3->pmtu;
2183 cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2184
2185 CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2186 XSTORM_ISCSI_LOCAL_VLAN_OFFSET(bp->pfid), csk->vlan_id);
2187
2188 ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2189 kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2190 if (!ret)
2191 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2192
2193 return ret;
2194 }
2195
2196 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2197 {
2198 struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2199 union l5cm_specific_data l5_data;
2200 int ret;
2201
2202 memset(&l5_data, 0, sizeof(l5_data));
2203 ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2204 req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2205 return ret;
2206 }
2207
2208 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2209 {
2210 struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2211 union l5cm_specific_data l5_data;
2212 int ret;
2213
2214 memset(&l5_data, 0, sizeof(l5_data));
2215 ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2216 req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2217 return ret;
2218 }
2219 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2220 {
2221 struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2222 struct l4_kcq kcqe;
2223 struct kcqe *cqes[1];
2224
2225 memset(&kcqe, 0, sizeof(kcqe));
2226 kcqe.pg_host_opaque = req->host_opaque;
2227 kcqe.pg_cid = req->host_opaque;
2228 kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2229 cqes[0] = (struct kcqe *) &kcqe;
2230 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2231 return 0;
2232 }
2233
2234 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2235 {
2236 struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2237 struct l4_kcq kcqe;
2238 struct kcqe *cqes[1];
2239
2240 memset(&kcqe, 0, sizeof(kcqe));
2241 kcqe.pg_host_opaque = req->pg_host_opaque;
2242 kcqe.pg_cid = req->pg_cid;
2243 kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2244 cqes[0] = (struct kcqe *) &kcqe;
2245 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2246 return 0;
2247 }
2248
2249 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2250 {
2251 struct fcoe_kwqe_stat *req;
2252 struct fcoe_stat_ramrod_params *fcoe_stat;
2253 union l5cm_specific_data l5_data;
2254 struct cnic_local *cp = dev->cnic_priv;
2255 struct bnx2x *bp = netdev_priv(dev->netdev);
2256 int ret;
2257 u32 cid;
2258
2259 req = (struct fcoe_kwqe_stat *) kwqe;
2260 cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2261
2262 fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2263 if (!fcoe_stat)
2264 return -ENOMEM;
2265
2266 memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2267 memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2268
2269 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2270 FCOE_CONNECTION_TYPE, &l5_data);
2271 return ret;
2272 }
2273
2274 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2275 u32 num, int *work)
2276 {
2277 int ret;
2278 struct cnic_local *cp = dev->cnic_priv;
2279 struct bnx2x *bp = netdev_priv(dev->netdev);
2280 u32 cid;
2281 struct fcoe_init_ramrod_params *fcoe_init;
2282 struct fcoe_kwqe_init1 *req1;
2283 struct fcoe_kwqe_init2 *req2;
2284 struct fcoe_kwqe_init3 *req3;
2285 union l5cm_specific_data l5_data;
2286
2287 if (num < 3) {
2288 *work = num;
2289 return -EINVAL;
2290 }
2291 req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2292 req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2293 req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2294 if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2295 *work = 1;
2296 return -EINVAL;
2297 }
2298 if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2299 *work = 2;
2300 return -EINVAL;
2301 }
2302
2303 if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2304 netdev_err(dev->netdev, "fcoe_init size too big\n");
2305 return -ENOMEM;
2306 }
2307 fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2308 if (!fcoe_init)
2309 return -ENOMEM;
2310
2311 memset(fcoe_init, 0, sizeof(*fcoe_init));
2312 memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2313 memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2314 memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2315 fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2316 fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2317 fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2318
2319 fcoe_init->sb_num = cp->status_blk_num;
2320 fcoe_init->eq_prod = MAX_KCQ_IDX;
2321 fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2322 cp->kcq2.sw_prod_idx = 0;
2323
2324 cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2325 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2326 FCOE_CONNECTION_TYPE, &l5_data);
2327 *work = 3;
2328 return ret;
2329 }
2330
2331 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2332 u32 num, int *work)
2333 {
2334 int ret = 0;
2335 u32 cid = -1, l5_cid;
2336 struct cnic_local *cp = dev->cnic_priv;
2337 struct bnx2x *bp = netdev_priv(dev->netdev);
2338 struct fcoe_kwqe_conn_offload1 *req1;
2339 struct fcoe_kwqe_conn_offload2 *req2;
2340 struct fcoe_kwqe_conn_offload3 *req3;
2341 struct fcoe_kwqe_conn_offload4 *req4;
2342 struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2343 struct cnic_context *ctx;
2344 struct fcoe_context *fctx;
2345 struct regpair ctx_addr;
2346 union l5cm_specific_data l5_data;
2347 struct fcoe_kcqe kcqe;
2348 struct kcqe *cqes[1];
2349
2350 if (num < 4) {
2351 *work = num;
2352 return -EINVAL;
2353 }
2354 req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2355 req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2356 req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2357 req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2358
2359 *work = 4;
2360
2361 l5_cid = req1->fcoe_conn_id;
2362 if (l5_cid >= dev->max_fcoe_conn)
2363 goto err_reply;
2364
2365 l5_cid += BNX2X_FCOE_L5_CID_BASE;
2366
2367 ctx = &cp->ctx_tbl[l5_cid];
2368 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2369 goto err_reply;
2370
2371 ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2372 if (ret) {
2373 ret = 0;
2374 goto err_reply;
2375 }
2376 cid = ctx->cid;
2377
2378 fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2379 if (fctx) {
2380 u32 hw_cid = BNX2X_HW_CID(bp, cid);
2381 u32 val;
2382
2383 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2384 FCOE_CONNECTION_TYPE);
2385 fctx->xstorm_ag_context.cdu_reserved = val;
2386 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2387 FCOE_CONNECTION_TYPE);
2388 fctx->ustorm_ag_context.cdu_usage = val;
2389 }
2390 if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2391 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2392 goto err_reply;
2393 }
2394 fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2395 if (!fcoe_offload)
2396 goto err_reply;
2397
2398 memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2399 memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2400 memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2401 memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2402 memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2403
2404 cid = BNX2X_HW_CID(bp, cid);
2405 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2406 FCOE_CONNECTION_TYPE, &l5_data);
2407 if (!ret)
2408 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2409
2410 return ret;
2411
2412 err_reply:
2413 if (cid != -1)
2414 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2415
2416 memset(&kcqe, 0, sizeof(kcqe));
2417 kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2418 kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2419 kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2420
2421 cqes[0] = (struct kcqe *) &kcqe;
2422 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2423 return ret;
2424 }
2425
2426 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2427 {
2428 struct fcoe_kwqe_conn_enable_disable *req;
2429 struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2430 union l5cm_specific_data l5_data;
2431 int ret;
2432 u32 cid, l5_cid;
2433 struct cnic_local *cp = dev->cnic_priv;
2434
2435 req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2436 cid = req->context_id;
2437 l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2438
2439 if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2440 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2441 return -ENOMEM;
2442 }
2443 fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2444 if (!fcoe_enable)
2445 return -ENOMEM;
2446
2447 memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2448 memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2449 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2450 FCOE_CONNECTION_TYPE, &l5_data);
2451 return ret;
2452 }
2453
2454 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2455 {
2456 struct fcoe_kwqe_conn_enable_disable *req;
2457 struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2458 union l5cm_specific_data l5_data;
2459 int ret;
2460 u32 cid, l5_cid;
2461 struct cnic_local *cp = dev->cnic_priv;
2462
2463 req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2464 cid = req->context_id;
2465 l5_cid = req->conn_id;
2466 if (l5_cid >= dev->max_fcoe_conn)
2467 return -EINVAL;
2468
2469 l5_cid += BNX2X_FCOE_L5_CID_BASE;
2470
2471 if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2472 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2473 return -ENOMEM;
2474 }
2475 fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2476 if (!fcoe_disable)
2477 return -ENOMEM;
2478
2479 memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2480 memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2481 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2482 FCOE_CONNECTION_TYPE, &l5_data);
2483 return ret;
2484 }
2485
2486 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2487 {
2488 struct fcoe_kwqe_conn_destroy *req;
2489 union l5cm_specific_data l5_data;
2490 int ret;
2491 u32 cid, l5_cid;
2492 struct cnic_local *cp = dev->cnic_priv;
2493 struct cnic_context *ctx;
2494 struct fcoe_kcqe kcqe;
2495 struct kcqe *cqes[1];
2496
2497 req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2498 cid = req->context_id;
2499 l5_cid = req->conn_id;
2500 if (l5_cid >= dev->max_fcoe_conn)
2501 return -EINVAL;
2502
2503 l5_cid += BNX2X_FCOE_L5_CID_BASE;
2504
2505 ctx = &cp->ctx_tbl[l5_cid];
2506
2507 init_waitqueue_head(&ctx->waitq);
2508 ctx->wait_cond = 0;
2509
2510 memset(&kcqe, 0, sizeof(kcqe));
2511 kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2512 memset(&l5_data, 0, sizeof(l5_data));
2513 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2514 FCOE_CONNECTION_TYPE, &l5_data);
2515 if (ret == 0) {
2516 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2517 if (ctx->wait_cond)
2518 kcqe.completion_status = 0;
2519 }
2520
2521 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2522 queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2523
2524 kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2525 kcqe.fcoe_conn_id = req->conn_id;
2526 kcqe.fcoe_conn_context_id = cid;
2527
2528 cqes[0] = (struct kcqe *) &kcqe;
2529 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2530 return ret;
2531 }
2532
2533 static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2534 {
2535 struct cnic_local *cp = dev->cnic_priv;
2536 u32 i;
2537
2538 for (i = start_cid; i < cp->max_cid_space; i++) {
2539 struct cnic_context *ctx = &cp->ctx_tbl[i];
2540 int j;
2541
2542 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2543 msleep(10);
2544
2545 for (j = 0; j < 5; j++) {
2546 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2547 break;
2548 msleep(20);
2549 }
2550
2551 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2552 netdev_warn(dev->netdev, "CID %x not deleted\n",
2553 ctx->cid);
2554 }
2555 }
2556
2557 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2558 {
2559 struct fcoe_kwqe_destroy *req;
2560 union l5cm_specific_data l5_data;
2561 struct cnic_local *cp = dev->cnic_priv;
2562 struct bnx2x *bp = netdev_priv(dev->netdev);
2563 int ret;
2564 u32 cid;
2565
2566 cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2567
2568 req = (struct fcoe_kwqe_destroy *) kwqe;
2569 cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2570
2571 memset(&l5_data, 0, sizeof(l5_data));
2572 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2573 FCOE_CONNECTION_TYPE, &l5_data);
2574 return ret;
2575 }
2576
2577 static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2578 {
2579 struct cnic_local *cp = dev->cnic_priv;
2580 struct kcqe kcqe;
2581 struct kcqe *cqes[1];
2582 u32 cid;
2583 u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2584 u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2585 u32 kcqe_op;
2586 int ulp_type;
2587
2588 cid = kwqe->kwqe_info0;
2589 memset(&kcqe, 0, sizeof(kcqe));
2590
2591 if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2592 u32 l5_cid = 0;
2593
2594 ulp_type = CNIC_ULP_FCOE;
2595 if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2596 struct fcoe_kwqe_conn_enable_disable *req;
2597
2598 req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2599 kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2600 cid = req->context_id;
2601 l5_cid = req->conn_id;
2602 } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2603 kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2604 } else {
2605 return;
2606 }
2607 kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2608 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2609 kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2610 kcqe.kcqe_info2 = cid;
2611 kcqe.kcqe_info0 = l5_cid;
2612
2613 } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2614 ulp_type = CNIC_ULP_ISCSI;
2615 if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2616 cid = kwqe->kwqe_info1;
2617
2618 kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2619 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2620 kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2621 kcqe.kcqe_info2 = cid;
2622 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2623
2624 } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2625 struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2626
2627 ulp_type = CNIC_ULP_L4;
2628 if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2629 kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2630 else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2631 kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2632 else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2633 kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2634 else
2635 return;
2636
2637 kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2638 KCQE_FLAGS_LAYER_MASK_L4;
2639 l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2640 l4kcqe->cid = cid;
2641 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2642 } else {
2643 return;
2644 }
2645
2646 cqes[0] = &kcqe;
2647 cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2648 }
2649
2650 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2651 struct kwqe *wqes[], u32 num_wqes)
2652 {
2653 int i, work, ret;
2654 u32 opcode;
2655 struct kwqe *kwqe;
2656
2657 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2658 return -EAGAIN; /* bnx2 is down */
2659
2660 for (i = 0; i < num_wqes; ) {
2661 kwqe = wqes[i];
2662 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2663 work = 1;
2664
2665 switch (opcode) {
2666 case ISCSI_KWQE_OPCODE_INIT1:
2667 ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2668 break;
2669 case ISCSI_KWQE_OPCODE_INIT2:
2670 ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2671 break;
2672 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2673 ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2674 num_wqes - i, &work);
2675 break;
2676 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2677 ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2678 break;
2679 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2680 ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2681 break;
2682 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2683 ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2684 &work);
2685 break;
2686 case L4_KWQE_OPCODE_VALUE_CLOSE:
2687 ret = cnic_bnx2x_close(dev, kwqe);
2688 break;
2689 case L4_KWQE_OPCODE_VALUE_RESET:
2690 ret = cnic_bnx2x_reset(dev, kwqe);
2691 break;
2692 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2693 ret = cnic_bnx2x_offload_pg(dev, kwqe);
2694 break;
2695 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2696 ret = cnic_bnx2x_update_pg(dev, kwqe);
2697 break;
2698 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2699 ret = 0;
2700 break;
2701 default:
2702 ret = 0;
2703 netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2704 opcode);
2705 break;
2706 }
2707 if (ret < 0) {
2708 netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2709 opcode);
2710
2711 /* Possibly bnx2x parity error, send completion
2712 * to ulp drivers with error code to speed up
2713 * cleanup and reset recovery.
2714 */
2715 if (ret == -EIO || ret == -EAGAIN)
2716 cnic_bnx2x_kwqe_err(dev, kwqe);
2717 }
2718 i += work;
2719 }
2720 return 0;
2721 }
2722
2723 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2724 struct kwqe *wqes[], u32 num_wqes)
2725 {
2726 struct bnx2x *bp = netdev_priv(dev->netdev);
2727 int i, work, ret;
2728 u32 opcode;
2729 struct kwqe *kwqe;
2730
2731 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2732 return -EAGAIN; /* bnx2 is down */
2733
2734 if (!BNX2X_CHIP_IS_E2_PLUS(bp))
2735 return -EINVAL;
2736
2737 for (i = 0; i < num_wqes; ) {
2738 kwqe = wqes[i];
2739 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2740 work = 1;
2741
2742 switch (opcode) {
2743 case FCOE_KWQE_OPCODE_INIT1:
2744 ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2745 num_wqes - i, &work);
2746 break;
2747 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2748 ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2749 num_wqes - i, &work);
2750 break;
2751 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2752 ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2753 break;
2754 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2755 ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2756 break;
2757 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2758 ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2759 break;
2760 case FCOE_KWQE_OPCODE_DESTROY:
2761 ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2762 break;
2763 case FCOE_KWQE_OPCODE_STAT:
2764 ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2765 break;
2766 default:
2767 ret = 0;
2768 netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2769 opcode);
2770 break;
2771 }
2772 if (ret < 0) {
2773 netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2774 opcode);
2775
2776 /* Possibly bnx2x parity error, send completion
2777 * to ulp drivers with error code to speed up
2778 * cleanup and reset recovery.
2779 */
2780 if (ret == -EIO || ret == -EAGAIN)
2781 cnic_bnx2x_kwqe_err(dev, kwqe);
2782 }
2783 i += work;
2784 }
2785 return 0;
2786 }
2787
2788 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2789 u32 num_wqes)
2790 {
2791 int ret = -EINVAL;
2792 u32 layer_code;
2793
2794 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2795 return -EAGAIN; /* bnx2x is down */
2796
2797 if (!num_wqes)
2798 return 0;
2799
2800 layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2801 switch (layer_code) {
2802 case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2803 case KWQE_FLAGS_LAYER_MASK_L4:
2804 case KWQE_FLAGS_LAYER_MASK_L2:
2805 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2806 break;
2807
2808 case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2809 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2810 break;
2811 }
2812 return ret;
2813 }
2814
2815 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2816 {
2817 if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2818 return KCQE_FLAGS_LAYER_MASK_L4;
2819
2820 return opflag & KCQE_FLAGS_LAYER_MASK;
2821 }
2822
2823 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2824 {
2825 struct cnic_local *cp = dev->cnic_priv;
2826 int i, j, comp = 0;
2827
2828 i = 0;
2829 j = 1;
2830 while (num_cqes) {
2831 struct cnic_ulp_ops *ulp_ops;
2832 int ulp_type;
2833 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2834 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2835
2836 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2837 comp++;
2838
2839 while (j < num_cqes) {
2840 u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2841
2842 if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2843 break;
2844
2845 if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2846 comp++;
2847 j++;
2848 }
2849
2850 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2851 ulp_type = CNIC_ULP_RDMA;
2852 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2853 ulp_type = CNIC_ULP_ISCSI;
2854 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2855 ulp_type = CNIC_ULP_FCOE;
2856 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2857 ulp_type = CNIC_ULP_L4;
2858 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2859 goto end;
2860 else {
2861 netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2862 kcqe_op_flag);
2863 goto end;
2864 }
2865
2866 rcu_read_lock();
2867 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2868 if (likely(ulp_ops)) {
2869 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2870 cp->completed_kcq + i, j);
2871 }
2872 rcu_read_unlock();
2873 end:
2874 num_cqes -= j;
2875 i += j;
2876 j = 1;
2877 }
2878 if (unlikely(comp))
2879 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2880 }
2881
2882 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2883 {
2884 struct cnic_local *cp = dev->cnic_priv;
2885 u16 i, ri, hw_prod, last;
2886 struct kcqe *kcqe;
2887 int kcqe_cnt = 0, last_cnt = 0;
2888
2889 i = ri = last = info->sw_prod_idx;
2890 ri &= MAX_KCQ_IDX;
2891 hw_prod = *info->hw_prod_idx_ptr;
2892 hw_prod = info->hw_idx(hw_prod);
2893
2894 while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2895 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2896 cp->completed_kcq[kcqe_cnt++] = kcqe;
2897 i = info->next_idx(i);
2898 ri = i & MAX_KCQ_IDX;
2899 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2900 last_cnt = kcqe_cnt;
2901 last = i;
2902 }
2903 }
2904
2905 info->sw_prod_idx = last;
2906 return last_cnt;
2907 }
2908
2909 static int cnic_l2_completion(struct cnic_local *cp)
2910 {
2911 u16 hw_cons, sw_cons;
2912 struct cnic_uio_dev *udev = cp->udev;
2913 union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2914 (udev->l2_ring + (2 * BNX2_PAGE_SIZE));
2915 u32 cmd;
2916 int comp = 0;
2917
2918 if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2919 return 0;
2920
2921 hw_cons = *cp->rx_cons_ptr;
2922 if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2923 hw_cons++;
2924
2925 sw_cons = cp->rx_cons;
2926 while (sw_cons != hw_cons) {
2927 u8 cqe_fp_flags;
2928
2929 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2930 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2931 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2932 cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2933 cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2934 if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2935 cmd == RAMROD_CMD_ID_ETH_HALT)
2936 comp++;
2937 }
2938 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2939 }
2940 return comp;
2941 }
2942
2943 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2944 {
2945 u16 rx_cons, tx_cons;
2946 int comp = 0;
2947
2948 if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2949 return;
2950
2951 rx_cons = *cp->rx_cons_ptr;
2952 tx_cons = *cp->tx_cons_ptr;
2953 if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2954 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2955 comp = cnic_l2_completion(cp);
2956
2957 cp->tx_cons = tx_cons;
2958 cp->rx_cons = rx_cons;
2959
2960 if (cp->udev)
2961 uio_event_notify(&cp->udev->cnic_uinfo);
2962 }
2963 if (comp)
2964 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2965 }
2966
2967 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2968 {
2969 struct cnic_local *cp = dev->cnic_priv;
2970 u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2971 int kcqe_cnt;
2972
2973 /* status block index must be read before reading other fields */
2974 rmb();
2975 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2976
2977 while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2978
2979 service_kcqes(dev, kcqe_cnt);
2980
2981 /* Tell compiler that status_blk fields can change. */
2982 barrier();
2983 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2984 /* status block index must be read first */
2985 rmb();
2986 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2987 }
2988
2989 CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2990
2991 cnic_chk_pkt_rings(cp);
2992
2993 return status_idx;
2994 }
2995
2996 static int cnic_service_bnx2(void *data, void *status_blk)
2997 {
2998 struct cnic_dev *dev = data;
2999
3000 if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3001 struct status_block *sblk = status_blk;
3002
3003 return sblk->status_idx;
3004 }
3005
3006 return cnic_service_bnx2_queues(dev);
3007 }
3008
3009 static void cnic_service_bnx2_msix(unsigned long data)
3010 {
3011 struct cnic_dev *dev = (struct cnic_dev *) data;
3012 struct cnic_local *cp = dev->cnic_priv;
3013
3014 cp->last_status_idx = cnic_service_bnx2_queues(dev);
3015
3016 CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3017 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3018 }
3019
3020 static void cnic_doirq(struct cnic_dev *dev)
3021 {
3022 struct cnic_local *cp = dev->cnic_priv;
3023
3024 if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3025 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
3026
3027 prefetch(cp->status_blk.gen);
3028 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
3029
3030 tasklet_schedule(&cp->cnic_irq_task);
3031 }
3032 }
3033
3034 static irqreturn_t cnic_irq(int irq, void *dev_instance)
3035 {
3036 struct cnic_dev *dev = dev_instance;
3037 struct cnic_local *cp = dev->cnic_priv;
3038
3039 if (cp->ack_int)
3040 cp->ack_int(dev);
3041
3042 cnic_doirq(dev);
3043
3044 return IRQ_HANDLED;
3045 }
3046
3047 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
3048 u16 index, u8 op, u8 update)
3049 {
3050 struct bnx2x *bp = netdev_priv(dev->netdev);
3051 u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp) * 32 +
3052 COMMAND_REG_INT_ACK);
3053 struct igu_ack_register igu_ack;
3054
3055 igu_ack.status_block_index = index;
3056 igu_ack.sb_id_and_flags =
3057 ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
3058 (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3059 (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3060 (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3061
3062 CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3063 }
3064
3065 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3066 u16 index, u8 op, u8 update)
3067 {
3068 struct igu_regular cmd_data;
3069 u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3070
3071 cmd_data.sb_id_and_flags =
3072 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3073 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3074 (update << IGU_REGULAR_BUPDATE_SHIFT) |
3075 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3076
3077
3078 CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3079 }
3080
3081 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3082 {
3083 struct cnic_local *cp = dev->cnic_priv;
3084
3085 cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3086 IGU_INT_DISABLE, 0);
3087 }
3088
3089 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3090 {
3091 struct cnic_local *cp = dev->cnic_priv;
3092
3093 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3094 IGU_INT_DISABLE, 0);
3095 }
3096
3097 static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
3098 {
3099 struct cnic_local *cp = dev->cnic_priv;
3100
3101 cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
3102 IGU_INT_ENABLE, 1);
3103 }
3104
3105 static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
3106 {
3107 struct cnic_local *cp = dev->cnic_priv;
3108
3109 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
3110 IGU_INT_ENABLE, 1);
3111 }
3112
3113 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3114 {
3115 u32 last_status = *info->status_idx_ptr;
3116 int kcqe_cnt;
3117
3118 /* status block index must be read before reading the KCQ */
3119 rmb();
3120 while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3121
3122 service_kcqes(dev, kcqe_cnt);
3123
3124 /* Tell compiler that sblk fields can change. */
3125 barrier();
3126
3127 last_status = *info->status_idx_ptr;
3128 /* status block index must be read before reading the KCQ */
3129 rmb();
3130 }
3131 return last_status;
3132 }
3133
3134 static void cnic_service_bnx2x_bh(unsigned long data)
3135 {
3136 struct cnic_dev *dev = (struct cnic_dev *) data;
3137 struct cnic_local *cp = dev->cnic_priv;
3138 struct bnx2x *bp = netdev_priv(dev->netdev);
3139 u32 status_idx, new_status_idx;
3140
3141 if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3142 return;
3143
3144 while (1) {
3145 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3146
3147 CNIC_WR16(dev, cp->kcq1.io_addr,
3148 cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3149
3150 if (!CNIC_SUPPORTS_FCOE(bp)) {
3151 cp->arm_int(dev, status_idx);
3152 break;
3153 }
3154
3155 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3156
3157 if (new_status_idx != status_idx)
3158 continue;
3159
3160 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3161 MAX_KCQ_IDX);
3162
3163 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3164 status_idx, IGU_INT_ENABLE, 1);
3165
3166 break;
3167 }
3168 }
3169
3170 static int cnic_service_bnx2x(void *data, void *status_blk)
3171 {
3172 struct cnic_dev *dev = data;
3173 struct cnic_local *cp = dev->cnic_priv;
3174
3175 if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3176 cnic_doirq(dev);
3177
3178 cnic_chk_pkt_rings(cp);
3179
3180 return 0;
3181 }
3182
3183 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3184 {
3185 struct cnic_ulp_ops *ulp_ops;
3186
3187 if (if_type == CNIC_ULP_ISCSI)
3188 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3189
3190 mutex_lock(&cnic_lock);
3191 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3192 lockdep_is_held(&cnic_lock));
3193 if (!ulp_ops) {
3194 mutex_unlock(&cnic_lock);
3195 return;
3196 }
3197 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3198 mutex_unlock(&cnic_lock);
3199
3200 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3201 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3202
3203 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3204 }
3205
3206 static void cnic_ulp_stop(struct cnic_dev *dev)
3207 {
3208 struct cnic_local *cp = dev->cnic_priv;
3209 int if_type;
3210
3211 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3212 cnic_ulp_stop_one(cp, if_type);
3213 }
3214
3215 static void cnic_ulp_start(struct cnic_dev *dev)
3216 {
3217 struct cnic_local *cp = dev->cnic_priv;
3218 int if_type;
3219
3220 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3221 struct cnic_ulp_ops *ulp_ops;
3222
3223 mutex_lock(&cnic_lock);
3224 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3225 lockdep_is_held(&cnic_lock));
3226 if (!ulp_ops || !ulp_ops->cnic_start) {
3227 mutex_unlock(&cnic_lock);
3228 continue;
3229 }
3230 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3231 mutex_unlock(&cnic_lock);
3232
3233 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3234 ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3235
3236 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3237 }
3238 }
3239
3240 static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3241 {
3242 struct cnic_local *cp = dev->cnic_priv;
3243 struct cnic_ulp_ops *ulp_ops;
3244 int rc;
3245
3246 mutex_lock(&cnic_lock);
3247 ulp_ops = cnic_ulp_tbl_prot(ulp_type);
3248 if (ulp_ops && ulp_ops->cnic_get_stats)
3249 rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3250 else
3251 rc = -ENODEV;
3252 mutex_unlock(&cnic_lock);
3253 return rc;
3254 }
3255
3256 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3257 {
3258 struct cnic_dev *dev = data;
3259 int ulp_type = CNIC_ULP_ISCSI;
3260
3261 switch (info->cmd) {
3262 case CNIC_CTL_STOP_CMD:
3263 cnic_hold(dev);
3264
3265 cnic_ulp_stop(dev);
3266 cnic_stop_hw(dev);
3267
3268 cnic_put(dev);
3269 break;
3270 case CNIC_CTL_START_CMD:
3271 cnic_hold(dev);
3272
3273 if (!cnic_start_hw(dev))
3274 cnic_ulp_start(dev);
3275
3276 cnic_put(dev);
3277 break;
3278 case CNIC_CTL_STOP_ISCSI_CMD: {
3279 struct cnic_local *cp = dev->cnic_priv;
3280 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3281 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3282 break;
3283 }
3284 case CNIC_CTL_COMPLETION_CMD: {
3285 struct cnic_ctl_completion *comp = &info->data.comp;
3286 u32 cid = BNX2X_SW_CID(comp->cid);
3287 u32 l5_cid;
3288 struct cnic_local *cp = dev->cnic_priv;
3289
3290 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
3291 break;
3292
3293 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3294 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3295
3296 if (unlikely(comp->error)) {
3297 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3298 netdev_err(dev->netdev,
3299 "CID %x CFC delete comp error %x\n",
3300 cid, comp->error);
3301 }
3302
3303 ctx->wait_cond = 1;
3304 wake_up(&ctx->waitq);
3305 }
3306 break;
3307 }
3308 case CNIC_CTL_FCOE_STATS_GET_CMD:
3309 ulp_type = CNIC_ULP_FCOE;
3310 /* fall through */
3311 case CNIC_CTL_ISCSI_STATS_GET_CMD:
3312 cnic_hold(dev);
3313 cnic_copy_ulp_stats(dev, ulp_type);
3314 cnic_put(dev);
3315 break;
3316
3317 default:
3318 return -EINVAL;
3319 }
3320 return 0;
3321 }
3322
3323 static void cnic_ulp_init(struct cnic_dev *dev)
3324 {
3325 int i;
3326 struct cnic_local *cp = dev->cnic_priv;
3327
3328 for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3329 struct cnic_ulp_ops *ulp_ops;
3330
3331 mutex_lock(&cnic_lock);
3332 ulp_ops = cnic_ulp_tbl_prot(i);
3333 if (!ulp_ops || !ulp_ops->cnic_init) {
3334 mutex_unlock(&cnic_lock);
3335 continue;
3336 }
3337 ulp_get(ulp_ops);
3338 mutex_unlock(&cnic_lock);
3339
3340 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3341 ulp_ops->cnic_init(dev);
3342
3343 ulp_put(ulp_ops);
3344 }
3345 }
3346
3347 static void cnic_ulp_exit(struct cnic_dev *dev)
3348 {
3349 int i;
3350 struct cnic_local *cp = dev->cnic_priv;
3351
3352 for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3353 struct cnic_ulp_ops *ulp_ops;
3354
3355 mutex_lock(&cnic_lock);
3356 ulp_ops = cnic_ulp_tbl_prot(i);
3357 if (!ulp_ops || !ulp_ops->cnic_exit) {
3358 mutex_unlock(&cnic_lock);
3359 continue;
3360 }
3361 ulp_get(ulp_ops);
3362 mutex_unlock(&cnic_lock);
3363
3364 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3365 ulp_ops->cnic_exit(dev);
3366
3367 ulp_put(ulp_ops);
3368 }
3369 }
3370
3371 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3372 {
3373 struct cnic_dev *dev = csk->dev;
3374 struct l4_kwq_offload_pg *l4kwqe;
3375 struct kwqe *wqes[1];
3376
3377 l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3378 memset(l4kwqe, 0, sizeof(*l4kwqe));
3379 wqes[0] = (struct kwqe *) l4kwqe;
3380
3381 l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3382 l4kwqe->flags =
3383 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3384 l4kwqe->l2hdr_nbytes = ETH_HLEN;
3385
3386 l4kwqe->da0 = csk->ha[0];
3387 l4kwqe->da1 = csk->ha[1];
3388 l4kwqe->da2 = csk->ha[2];
3389 l4kwqe->da3 = csk->ha[3];
3390 l4kwqe->da4 = csk->ha[4];
3391 l4kwqe->da5 = csk->ha[5];
3392
3393 l4kwqe->sa0 = dev->mac_addr[0];
3394 l4kwqe->sa1 = dev->mac_addr[1];
3395 l4kwqe->sa2 = dev->mac_addr[2];
3396 l4kwqe->sa3 = dev->mac_addr[3];
3397 l4kwqe->sa4 = dev->mac_addr[4];
3398 l4kwqe->sa5 = dev->mac_addr[5];
3399
3400 l4kwqe->etype = ETH_P_IP;
3401 l4kwqe->ipid_start = DEF_IPID_START;
3402 l4kwqe->host_opaque = csk->l5_cid;
3403
3404 if (csk->vlan_id) {
3405 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3406 l4kwqe->vlan_tag = csk->vlan_id;
3407 l4kwqe->l2hdr_nbytes += 4;
3408 }
3409
3410 return dev->submit_kwqes(dev, wqes, 1);
3411 }
3412
3413 static int cnic_cm_update_pg(struct cnic_sock *csk)
3414 {
3415 struct cnic_dev *dev = csk->dev;
3416 struct l4_kwq_update_pg *l4kwqe;
3417 struct kwqe *wqes[1];
3418
3419 l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3420 memset(l4kwqe, 0, sizeof(*l4kwqe));
3421 wqes[0] = (struct kwqe *) l4kwqe;
3422
3423 l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3424 l4kwqe->flags =
3425 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3426 l4kwqe->pg_cid = csk->pg_cid;
3427
3428 l4kwqe->da0 = csk->ha[0];
3429 l4kwqe->da1 = csk->ha[1];
3430 l4kwqe->da2 = csk->ha[2];
3431 l4kwqe->da3 = csk->ha[3];
3432 l4kwqe->da4 = csk->ha[4];
3433 l4kwqe->da5 = csk->ha[5];
3434
3435 l4kwqe->pg_host_opaque = csk->l5_cid;
3436 l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3437
3438 return dev->submit_kwqes(dev, wqes, 1);
3439 }
3440
3441 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3442 {
3443 struct cnic_dev *dev = csk->dev;
3444 struct l4_kwq_upload *l4kwqe;
3445 struct kwqe *wqes[1];
3446
3447 l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3448 memset(l4kwqe, 0, sizeof(*l4kwqe));
3449 wqes[0] = (struct kwqe *) l4kwqe;
3450
3451 l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3452 l4kwqe->flags =
3453 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3454 l4kwqe->cid = csk->pg_cid;
3455
3456 return dev->submit_kwqes(dev, wqes, 1);
3457 }
3458
3459 static int cnic_cm_conn_req(struct cnic_sock *csk)
3460 {
3461 struct cnic_dev *dev = csk->dev;
3462 struct l4_kwq_connect_req1 *l4kwqe1;
3463 struct l4_kwq_connect_req2 *l4kwqe2;
3464 struct l4_kwq_connect_req3 *l4kwqe3;
3465 struct kwqe *wqes[3];
3466 u8 tcp_flags = 0;
3467 int num_wqes = 2;
3468
3469 l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3470 l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3471 l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3472 memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3473 memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3474 memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3475
3476 l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3477 l4kwqe3->flags =
3478 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3479 l4kwqe3->ka_timeout = csk->ka_timeout;
3480 l4kwqe3->ka_interval = csk->ka_interval;
3481 l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3482 l4kwqe3->tos = csk->tos;
3483 l4kwqe3->ttl = csk->ttl;
3484 l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3485 l4kwqe3->pmtu = csk->mtu;
3486 l4kwqe3->rcv_buf = csk->rcv_buf;
3487 l4kwqe3->snd_buf = csk->snd_buf;
3488 l4kwqe3->seed = csk->seed;
3489
3490 wqes[0] = (struct kwqe *) l4kwqe1;
3491 if (test_bit(SK_F_IPV6, &csk->flags)) {
3492 wqes[1] = (struct kwqe *) l4kwqe2;
3493 wqes[2] = (struct kwqe *) l4kwqe3;
3494 num_wqes = 3;
3495
3496 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3497 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3498 l4kwqe2->flags =
3499 L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3500 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3501 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3502 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3503 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3504 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3505 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3506 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3507 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3508 sizeof(struct tcphdr);
3509 } else {
3510 wqes[1] = (struct kwqe *) l4kwqe3;
3511 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3512 sizeof(struct tcphdr);
3513 }
3514
3515 l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3516 l4kwqe1->flags =
3517 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3518 L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3519 l4kwqe1->cid = csk->cid;
3520 l4kwqe1->pg_cid = csk->pg_cid;
3521 l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3522 l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3523 l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3524 l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3525 if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3526 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3527 if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3528 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3529 if (csk->tcp_flags & SK_TCP_NAGLE)
3530 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3531 if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3532 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3533 if (csk->tcp_flags & SK_TCP_SACK)
3534 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3535 if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3536 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3537
3538 l4kwqe1->tcp_flags = tcp_flags;
3539
3540 return dev->submit_kwqes(dev, wqes, num_wqes);
3541 }
3542
3543 static int cnic_cm_close_req(struct cnic_sock *csk)
3544 {
3545 struct cnic_dev *dev = csk->dev;
3546 struct l4_kwq_close_req *l4kwqe;
3547 struct kwqe *wqes[1];
3548
3549 l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3550 memset(l4kwqe, 0, sizeof(*l4kwqe));
3551 wqes[0] = (struct kwqe *) l4kwqe;
3552
3553 l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3554 l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3555 l4kwqe->cid = csk->cid;
3556
3557 return dev->submit_kwqes(dev, wqes, 1);
3558 }
3559
3560 static int cnic_cm_abort_req(struct cnic_sock *csk)
3561 {
3562 struct cnic_dev *dev = csk->dev;
3563 struct l4_kwq_reset_req *l4kwqe;
3564 struct kwqe *wqes[1];
3565
3566 l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3567 memset(l4kwqe, 0, sizeof(*l4kwqe));
3568 wqes[0] = (struct kwqe *) l4kwqe;
3569
3570 l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3571 l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3572 l4kwqe->cid = csk->cid;
3573
3574 return dev->submit_kwqes(dev, wqes, 1);
3575 }
3576
3577 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3578 u32 l5_cid, struct cnic_sock **csk, void *context)
3579 {
3580 struct cnic_local *cp = dev->cnic_priv;
3581 struct cnic_sock *csk1;
3582
3583 if (l5_cid >= MAX_CM_SK_TBL_SZ)
3584 return -EINVAL;
3585
3586 if (cp->ctx_tbl) {
3587 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3588
3589 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3590 return -EAGAIN;
3591 }
3592
3593 csk1 = &cp->csk_tbl[l5_cid];
3594 if (atomic_read(&csk1->ref_count))
3595 return -EAGAIN;
3596
3597 if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3598 return -EBUSY;
3599
3600 csk1->dev = dev;
3601 csk1->cid = cid;
3602 csk1->l5_cid = l5_cid;
3603 csk1->ulp_type = ulp_type;
3604 csk1->context = context;
3605
3606 csk1->ka_timeout = DEF_KA_TIMEOUT;
3607 csk1->ka_interval = DEF_KA_INTERVAL;
3608 csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3609 csk1->tos = DEF_TOS;
3610 csk1->ttl = DEF_TTL;
3611 csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3612 csk1->rcv_buf = DEF_RCV_BUF;
3613 csk1->snd_buf = DEF_SND_BUF;
3614 csk1->seed = DEF_SEED;
3615 csk1->tcp_flags = 0;
3616
3617 *csk = csk1;
3618 return 0;
3619 }
3620
3621 static void cnic_cm_cleanup(struct cnic_sock *csk)
3622 {
3623 if (csk->src_port) {
3624 struct cnic_dev *dev = csk->dev;
3625 struct cnic_local *cp = dev->cnic_priv;
3626
3627 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3628 csk->src_port = 0;
3629 }
3630 }
3631
3632 static void cnic_close_conn(struct cnic_sock *csk)
3633 {
3634 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3635 cnic_cm_upload_pg(csk);
3636 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3637 }
3638 cnic_cm_cleanup(csk);
3639 }
3640
3641 static int cnic_cm_destroy(struct cnic_sock *csk)
3642 {
3643 if (!cnic_in_use(csk))
3644 return -EINVAL;
3645
3646 csk_hold(csk);
3647 clear_bit(SK_F_INUSE, &csk->flags);
3648 smp_mb__after_clear_bit();
3649 while (atomic_read(&csk->ref_count) != 1)
3650 msleep(1);
3651 cnic_cm_cleanup(csk);
3652
3653 csk->flags = 0;
3654 csk_put(csk);
3655 return 0;
3656 }
3657
3658 static inline u16 cnic_get_vlan(struct net_device *dev,
3659 struct net_device **vlan_dev)
3660 {
3661 if (dev->priv_flags & IFF_802_1Q_VLAN) {
3662 *vlan_dev = vlan_dev_real_dev(dev);
3663 return vlan_dev_vlan_id(dev);
3664 }
3665 *vlan_dev = dev;
3666 return 0;
3667 }
3668
3669 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3670 struct dst_entry **dst)
3671 {
3672 #if defined(CONFIG_INET)
3673 struct rtable *rt;
3674
3675 rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3676 if (!IS_ERR(rt)) {
3677 *dst = &rt->dst;
3678 return 0;
3679 }
3680 return PTR_ERR(rt);
3681 #else
3682 return -ENETUNREACH;
3683 #endif
3684 }
3685
3686 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3687 struct dst_entry **dst)
3688 {
3689 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3690 struct flowi6 fl6;
3691
3692 memset(&fl6, 0, sizeof(fl6));
3693 fl6.daddr = dst_addr->sin6_addr;
3694 if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3695 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3696
3697 *dst = ip6_route_output(&init_net, NULL, &fl6);
3698 if ((*dst)->error) {
3699 dst_release(*dst);
3700 *dst = NULL;
3701 return -ENETUNREACH;
3702 } else
3703 return 0;
3704 #endif
3705
3706 return -ENETUNREACH;
3707 }
3708
3709 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3710 int ulp_type)
3711 {
3712 struct cnic_dev *dev = NULL;
3713 struct dst_entry *dst;
3714 struct net_device *netdev = NULL;
3715 int err = -ENETUNREACH;
3716
3717 if (dst_addr->sin_family == AF_INET)
3718 err = cnic_get_v4_route(dst_addr, &dst);
3719 else if (dst_addr->sin_family == AF_INET6) {
3720 struct sockaddr_in6 *dst_addr6 =
3721 (struct sockaddr_in6 *) dst_addr;
3722
3723 err = cnic_get_v6_route(dst_addr6, &dst);
3724 } else
3725 return NULL;
3726
3727 if (err)
3728 return NULL;
3729
3730 if (!dst->dev)
3731 goto done;
3732
3733 cnic_get_vlan(dst->dev, &netdev);
3734
3735 dev = cnic_from_netdev(netdev);
3736
3737 done:
3738 dst_release(dst);
3739 if (dev)
3740 cnic_put(dev);
3741 return dev;
3742 }
3743
3744 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3745 {
3746 struct cnic_dev *dev = csk->dev;
3747 struct cnic_local *cp = dev->cnic_priv;
3748
3749 return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3750 }
3751
3752 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3753 {
3754 struct cnic_dev *dev = csk->dev;
3755 struct cnic_local *cp = dev->cnic_priv;
3756 int is_v6, rc = 0;
3757 struct dst_entry *dst = NULL;
3758 struct net_device *realdev;
3759 __be16 local_port;
3760 u32 port_id;
3761
3762 if (saddr->local.v6.sin6_family == AF_INET6 &&
3763 saddr->remote.v6.sin6_family == AF_INET6)
3764 is_v6 = 1;
3765 else if (saddr->local.v4.sin_family == AF_INET &&
3766 saddr->remote.v4.sin_family == AF_INET)
3767 is_v6 = 0;
3768 else
3769 return -EINVAL;
3770
3771 clear_bit(SK_F_IPV6, &csk->flags);
3772
3773 if (is_v6) {
3774 set_bit(SK_F_IPV6, &csk->flags);
3775 cnic_get_v6_route(&saddr->remote.v6, &dst);
3776
3777 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3778 sizeof(struct in6_addr));
3779 csk->dst_port = saddr->remote.v6.sin6_port;
3780 local_port = saddr->local.v6.sin6_port;
3781
3782 } else {
3783 cnic_get_v4_route(&saddr->remote.v4, &dst);
3784
3785 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3786 csk->dst_port = saddr->remote.v4.sin_port;
3787 local_port = saddr->local.v4.sin_port;
3788 }
3789
3790 csk->vlan_id = 0;
3791 csk->mtu = dev->netdev->mtu;
3792 if (dst && dst->dev) {
3793 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3794 if (realdev == dev->netdev) {
3795 csk->vlan_id = vlan;
3796 csk->mtu = dst_mtu(dst);
3797 }
3798 }
3799
3800 port_id = be16_to_cpu(local_port);
3801 if (port_id >= CNIC_LOCAL_PORT_MIN &&
3802 port_id < CNIC_LOCAL_PORT_MAX) {
3803 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3804 port_id = 0;
3805 } else
3806 port_id = 0;
3807
3808 if (!port_id) {
3809 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3810 if (port_id == -1) {
3811 rc = -ENOMEM;
3812 goto err_out;
3813 }
3814 local_port = cpu_to_be16(port_id);
3815 }
3816 csk->src_port = local_port;
3817
3818 err_out:
3819 dst_release(dst);
3820 return rc;
3821 }
3822
3823 static void cnic_init_csk_state(struct cnic_sock *csk)
3824 {
3825 csk->state = 0;
3826 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3827 clear_bit(SK_F_CLOSING, &csk->flags);
3828 }
3829
3830 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3831 {
3832 struct cnic_local *cp = csk->dev->cnic_priv;
3833 int err = 0;
3834
3835 if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3836 return -EOPNOTSUPP;
3837
3838 if (!cnic_in_use(csk))
3839 return -EINVAL;
3840
3841 if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3842 return -EINVAL;
3843
3844 cnic_init_csk_state(csk);
3845
3846 err = cnic_get_route(csk, saddr);
3847 if (err)
3848 goto err_out;
3849
3850 err = cnic_resolve_addr(csk, saddr);
3851 if (!err)
3852 return 0;
3853
3854 err_out:
3855 clear_bit(SK_F_CONNECT_START, &csk->flags);
3856 return err;
3857 }
3858
3859 static int cnic_cm_abort(struct cnic_sock *csk)
3860 {
3861 struct cnic_local *cp = csk->dev->cnic_priv;
3862 u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3863
3864 if (!cnic_in_use(csk))
3865 return -EINVAL;
3866
3867 if (cnic_abort_prep(csk))
3868 return cnic_cm_abort_req(csk);
3869
3870 /* Getting here means that we haven't started connect, or
3871 * connect was not successful, or it has been reset by the target.
3872 */
3873
3874 cp->close_conn(csk, opcode);
3875 if (csk->state != opcode) {
3876 /* Wait for remote reset sequence to complete */
3877 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3878 msleep(1);
3879
3880 return -EALREADY;
3881 }
3882
3883 return 0;
3884 }
3885
3886 static int cnic_cm_close(struct cnic_sock *csk)
3887 {
3888 if (!cnic_in_use(csk))
3889 return -EINVAL;
3890
3891 if (cnic_close_prep(csk)) {
3892 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3893 return cnic_cm_close_req(csk);
3894 } else {
3895 /* Wait for remote reset sequence to complete */
3896 while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3897 msleep(1);
3898
3899 return -EALREADY;
3900 }
3901 return 0;
3902 }
3903
3904 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3905 u8 opcode)
3906 {
3907 struct cnic_ulp_ops *ulp_ops;
3908 int ulp_type = csk->ulp_type;
3909
3910 rcu_read_lock();
3911 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3912 if (ulp_ops) {
3913 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3914 ulp_ops->cm_connect_complete(csk);
3915 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3916 ulp_ops->cm_close_complete(csk);
3917 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3918 ulp_ops->cm_remote_abort(csk);
3919 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3920 ulp_ops->cm_abort_complete(csk);
3921 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3922 ulp_ops->cm_remote_close(csk);
3923 }
3924 rcu_read_unlock();
3925 }
3926
3927 static int cnic_cm_set_pg(struct cnic_sock *csk)
3928 {
3929 if (cnic_offld_prep(csk)) {
3930 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3931 cnic_cm_update_pg(csk);
3932 else
3933 cnic_cm_offload_pg(csk);
3934 }
3935 return 0;
3936 }
3937
3938 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3939 {
3940 struct cnic_local *cp = dev->cnic_priv;
3941 u32 l5_cid = kcqe->pg_host_opaque;
3942 u8 opcode = kcqe->op_code;
3943 struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3944
3945 csk_hold(csk);
3946 if (!cnic_in_use(csk))
3947 goto done;
3948
3949 if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3950 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3951 goto done;
3952 }
3953 /* Possible PG kcqe status: SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3954 if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3955 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3956 cnic_cm_upcall(cp, csk,
3957 L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3958 goto done;
3959 }
3960
3961 csk->pg_cid = kcqe->pg_cid;
3962 set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3963 cnic_cm_conn_req(csk);
3964
3965 done:
3966 csk_put(csk);
3967 }
3968
3969 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3970 {
3971 struct cnic_local *cp = dev->cnic_priv;
3972 struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3973 u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3974 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3975
3976 ctx->timestamp = jiffies;
3977 ctx->wait_cond = 1;
3978 wake_up(&ctx->waitq);
3979 }
3980
3981 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3982 {
3983 struct cnic_local *cp = dev->cnic_priv;
3984 struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3985 u8 opcode = l4kcqe->op_code;
3986 u32 l5_cid;
3987 struct cnic_sock *csk;
3988
3989 if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3990 cnic_process_fcoe_term_conn(dev, kcqe);
3991 return;
3992 }
3993 if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3994 opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3995 cnic_cm_process_offld_pg(dev, l4kcqe);
3996 return;
3997 }
3998
3999 l5_cid = l4kcqe->conn_id;
4000 if (opcode & 0x80)
4001 l5_cid = l4kcqe->cid;
4002 if (l5_cid >= MAX_CM_SK_TBL_SZ)
4003 return;
4004
4005 csk = &cp->csk_tbl[l5_cid];
4006 csk_hold(csk);
4007
4008 if (!cnic_in_use(csk)) {
4009 csk_put(csk);
4010 return;
4011 }
4012
4013 switch (opcode) {
4014 case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
4015 if (l4kcqe->status != 0) {
4016 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4017 cnic_cm_upcall(cp, csk,
4018 L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
4019 }
4020 break;
4021 case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
4022 if (l4kcqe->status == 0)
4023 set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
4024 else if (l4kcqe->status ==
4025 L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4026 set_bit(SK_F_HW_ERR, &csk->flags);
4027
4028 smp_mb__before_clear_bit();
4029 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
4030 cnic_cm_upcall(cp, csk, opcode);
4031 break;
4032
4033 case L5CM_RAMROD_CMD_ID_CLOSE: {
4034 struct iscsi_kcqe *l5kcqe = (struct iscsi_kcqe *) kcqe;
4035
4036 if (l4kcqe->status != 0 || l5kcqe->completion_status != 0) {
4037 netdev_warn(dev->netdev, "RAMROD CLOSE compl with status 0x%x completion status 0x%x\n",
4038 l4kcqe->status, l5kcqe->completion_status);
4039 opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
4040 /* Fall through */
4041 } else {
4042 break;
4043 }
4044 }
4045 case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4046 case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4047 case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4048 case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4049 case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4050 if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4051 set_bit(SK_F_HW_ERR, &csk->flags);
4052
4053 cp->close_conn(csk, opcode);
4054 break;
4055
4056 case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
4057 /* after we already sent CLOSE_REQ */
4058 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
4059 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
4060 csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
4061 cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
4062 else
4063 cnic_cm_upcall(cp, csk, opcode);
4064 break;
4065 }
4066 csk_put(csk);
4067 }
4068
4069 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
4070 {
4071 struct cnic_dev *dev = data;
4072 int i;
4073
4074 for (i = 0; i < num; i++)
4075 cnic_cm_process_kcqe(dev, kcqe[i]);
4076 }
4077
4078 static struct cnic_ulp_ops cm_ulp_ops = {
4079 .indicate_kcqes = cnic_cm_indicate_kcqe,
4080 };
4081
4082 static void cnic_cm_free_mem(struct cnic_dev *dev)
4083 {
4084 struct cnic_local *cp = dev->cnic_priv;
4085
4086 kfree(cp->csk_tbl);
4087 cp->csk_tbl = NULL;
4088 cnic_free_id_tbl(&cp->csk_port_tbl);
4089 }
4090
4091 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
4092 {
4093 struct cnic_local *cp = dev->cnic_priv;
4094 u32 port_id;
4095
4096 cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
4097 GFP_KERNEL);
4098 if (!cp->csk_tbl)
4099 return -ENOMEM;
4100
4101 port_id = prandom_u32();
4102 port_id %= CNIC_LOCAL_PORT_RANGE;
4103 if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4104 CNIC_LOCAL_PORT_MIN, port_id)) {
4105 cnic_cm_free_mem(dev);
4106 return -ENOMEM;
4107 }
4108 return 0;
4109 }
4110
4111 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
4112 {
4113 if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
4114 /* Unsolicited RESET_COMP or RESET_RECEIVED */
4115 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
4116 csk->state = opcode;
4117 }
4118
4119 /* 1. If event opcode matches the expected event in csk->state
4120 * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
4121 * event
4122 * 3. If the expected event is 0, meaning the connection was never
4123 * never established, we accept the opcode from cm_abort.
4124 */
4125 if (opcode == csk->state || csk->state == 0 ||
4126 csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
4127 csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4128 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
4129 if (csk->state == 0)
4130 csk->state = opcode;
4131 return 1;
4132 }
4133 }
4134 return 0;
4135 }
4136
4137 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
4138 {
4139 struct cnic_dev *dev = csk->dev;
4140 struct cnic_local *cp = dev->cnic_priv;
4141
4142 if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
4143 cnic_cm_upcall(cp, csk, opcode);
4144 return;
4145 }
4146
4147 clear_bit(SK_F_CONNECT_START, &csk->flags);
4148 cnic_close_conn(csk);
4149 csk->state = opcode;
4150 cnic_cm_upcall(cp, csk, opcode);
4151 }
4152
4153 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
4154 {
4155 }
4156
4157 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
4158 {
4159 u32 seed;
4160
4161 seed = prandom_u32();
4162 cnic_ctx_wr(dev, 45, 0, seed);
4163 return 0;
4164 }
4165
4166 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
4167 {
4168 struct cnic_dev *dev = csk->dev;
4169 struct cnic_local *cp = dev->cnic_priv;
4170 struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
4171 union l5cm_specific_data l5_data;
4172 u32 cmd = 0;
4173 int close_complete = 0;
4174
4175 switch (opcode) {
4176 case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
4177 case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
4178 case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4179 if (cnic_ready_to_close(csk, opcode)) {
4180 if (test_bit(SK_F_HW_ERR, &csk->flags))
4181 close_complete = 1;
4182 else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4183 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
4184 else
4185 close_complete = 1;
4186 }
4187 break;
4188 case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
4189 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
4190 break;
4191 case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4192 close_complete = 1;
4193 break;
4194 }
4195 if (cmd) {
4196 memset(&l5_data, 0, sizeof(l5_data));
4197
4198 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
4199 &l5_data);
4200 } else if (close_complete) {
4201 ctx->timestamp = jiffies;
4202 cnic_close_conn(csk);
4203 cnic_cm_upcall(cp, csk, csk->state);
4204 }
4205 }
4206
4207 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
4208 {
4209 struct cnic_local *cp = dev->cnic_priv;
4210
4211 if (!cp->ctx_tbl)
4212 return;
4213
4214 if (!netif_running(dev->netdev))
4215 return;
4216
4217 cnic_bnx2x_delete_wait(dev, 0);
4218
4219 cancel_delayed_work(&cp->delete_task);
4220 flush_workqueue(cnic_wq);
4221
4222 if (atomic_read(&cp->iscsi_conn) != 0)
4223 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
4224 atomic_read(&cp->iscsi_conn));
4225 }
4226
4227 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
4228 {
4229 struct bnx2x *bp = netdev_priv(dev->netdev);
4230 u32 pfid = bp->pfid;
4231 u32 port = BP_PORT(bp);
4232
4233 cnic_init_bnx2x_mac(dev);
4234 cnic_bnx2x_set_tcp_options(dev, 0, 1);
4235
4236 CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4237 XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4238
4239 CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4240 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4241 CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4242 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4243 DEF_MAX_DA_COUNT);
4244
4245 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4246 XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4247 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4248 XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4249 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4250 XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4251 CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4252 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4253
4254 CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4255 DEF_MAX_CWND);
4256 return 0;
4257 }
4258
4259 static void cnic_delete_task(struct work_struct *work)
4260 {
4261 struct cnic_local *cp;
4262 struct cnic_dev *dev;
4263 u32 i;
4264 int need_resched = 0;
4265
4266 cp = container_of(work, struct cnic_local, delete_task.work);
4267 dev = cp->dev;
4268
4269 if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4270 struct drv_ctl_info info;
4271
4272 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4273
4274 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4275 cp->ethdev->drv_ctl(dev->netdev, &info);
4276 }
4277
4278 for (i = 0; i < cp->max_cid_space; i++) {
4279 struct cnic_context *ctx = &cp->ctx_tbl[i];
4280 int err;
4281
4282 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4283 !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4284 continue;
4285
4286 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4287 need_resched = 1;
4288 continue;
4289 }
4290
4291 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4292 continue;
4293
4294 err = cnic_bnx2x_destroy_ramrod(dev, i);
4295
4296 cnic_free_bnx2x_conn_resc(dev, i);
4297 if (!err) {
4298 if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4299 atomic_dec(&cp->iscsi_conn);
4300
4301 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4302 }
4303 }
4304
4305 if (need_resched)
4306 queue_delayed_work(cnic_wq, &cp->delete_task,
4307 msecs_to_jiffies(10));
4308
4309 }
4310
4311 static int cnic_cm_open(struct cnic_dev *dev)
4312 {
4313 struct cnic_local *cp = dev->cnic_priv;
4314 int err;
4315
4316 err = cnic_cm_alloc_mem(dev);
4317 if (err)
4318 return err;
4319
4320 err = cp->start_cm(dev);
4321
4322 if (err)
4323 goto err_out;
4324
4325 INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4326
4327 dev->cm_create = cnic_cm_create;
4328 dev->cm_destroy = cnic_cm_destroy;
4329 dev->cm_connect = cnic_cm_connect;
4330 dev->cm_abort = cnic_cm_abort;
4331 dev->cm_close = cnic_cm_close;
4332 dev->cm_select_dev = cnic_cm_select_dev;
4333
4334 cp->ulp_handle[CNIC_ULP_L4] = dev;
4335 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4336 return 0;
4337
4338 err_out:
4339 cnic_cm_free_mem(dev);
4340 return err;
4341 }
4342
4343 static int cnic_cm_shutdown(struct cnic_dev *dev)
4344 {
4345 struct cnic_local *cp = dev->cnic_priv;
4346 int i;
4347
4348 if (!cp->csk_tbl)
4349 return 0;
4350
4351 for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4352 struct cnic_sock *csk = &cp->csk_tbl[i];
4353
4354 clear_bit(SK_F_INUSE, &csk->flags);
4355 cnic_cm_cleanup(csk);
4356 }
4357 cnic_cm_free_mem(dev);
4358
4359 return 0;
4360 }
4361
4362 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4363 {
4364 u32 cid_addr;
4365 int i;
4366
4367 cid_addr = GET_CID_ADDR(cid);
4368
4369 for (i = 0; i < CTX_SIZE; i += 4)
4370 cnic_ctx_wr(dev, cid_addr, i, 0);
4371 }
4372
4373 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4374 {
4375 struct cnic_local *cp = dev->cnic_priv;
4376 int ret = 0, i;
4377 u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4378
4379 if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4380 return 0;
4381
4382 for (i = 0; i < cp->ctx_blks; i++) {
4383 int j;
4384 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4385 u32 val;
4386
4387 memset(cp->ctx_arr[i].ctx, 0, BNX2_PAGE_SIZE);
4388
4389 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4390 (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4391 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4392 (u64) cp->ctx_arr[i].mapping >> 32);
4393 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4394 BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4395 for (j = 0; j < 10; j++) {
4396
4397 val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4398 if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4399 break;
4400 udelay(5);
4401 }
4402 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4403 ret = -EBUSY;
4404 break;
4405 }
4406 }
4407 return ret;
4408 }
4409
4410 static void cnic_free_irq(struct cnic_dev *dev)
4411 {
4412 struct cnic_local *cp = dev->cnic_priv;
4413 struct cnic_eth_dev *ethdev = cp->ethdev;
4414
4415 if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4416 cp->disable_int_sync(dev);
4417 tasklet_kill(&cp->cnic_irq_task);
4418 free_irq(ethdev->irq_arr[0].vector, dev);
4419 }
4420 }
4421
4422 static int cnic_request_irq(struct cnic_dev *dev)
4423 {
4424 struct cnic_local *cp = dev->cnic_priv;
4425 struct cnic_eth_dev *ethdev = cp->ethdev;
4426 int err;
4427
4428 err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4429 if (err)
4430 tasklet_disable(&cp->cnic_irq_task);
4431
4432 return err;
4433 }
4434
4435 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4436 {
4437 struct cnic_local *cp = dev->cnic_priv;
4438 struct cnic_eth_dev *ethdev = cp->ethdev;
4439
4440 if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4441 int err, i = 0;
4442 int sblk_num = cp->status_blk_num;
4443 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4444 BNX2_HC_SB_CONFIG_1;
4445
4446 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4447
4448 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4449 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4450 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4451
4452 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4453 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4454 (unsigned long) dev);
4455 err = cnic_request_irq(dev);
4456 if (err)
4457 return err;
4458
4459 while (cp->status_blk.bnx2->status_completion_producer_index &&
4460 i < 10) {
4461 CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4462 1 << (11 + sblk_num));
4463 udelay(10);
4464 i++;
4465 barrier();
4466 }
4467 if (cp->status_blk.bnx2->status_completion_producer_index) {
4468 cnic_free_irq(dev);
4469 goto failed;
4470 }
4471
4472 } else {
4473 struct status_block *sblk = cp->status_blk.gen;
4474 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4475 int i = 0;
4476
4477 while (sblk->status_completion_producer_index && i < 10) {
4478 CNIC_WR(dev, BNX2_HC_COMMAND,
4479 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4480 udelay(10);
4481 i++;
4482 barrier();
4483 }
4484 if (sblk->status_completion_producer_index)
4485 goto failed;
4486
4487 }
4488 return 0;
4489
4490 failed:
4491 netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4492 return -EBUSY;
4493 }
4494
4495 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4496 {
4497 struct cnic_local *cp = dev->cnic_priv;
4498 struct cnic_eth_dev *ethdev = cp->ethdev;
4499
4500 if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4501 return;
4502
4503 CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4504 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4505 }
4506
4507 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4508 {
4509 struct cnic_local *cp = dev->cnic_priv;
4510 struct cnic_eth_dev *ethdev = cp->ethdev;
4511
4512 if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4513 return;
4514
4515 CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4516 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4517 CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4518 synchronize_irq(ethdev->irq_arr[0].vector);
4519 }
4520
4521 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4522 {
4523 struct cnic_local *cp = dev->cnic_priv;
4524 struct cnic_eth_dev *ethdev = cp->ethdev;
4525 struct cnic_uio_dev *udev = cp->udev;
4526 u32 cid_addr, tx_cid, sb_id;
4527 u32 val, offset0, offset1, offset2, offset3;
4528 int i;
4529 struct bnx2_tx_bd *txbd;
4530 dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4531 struct status_block *s_blk = cp->status_blk.gen;
4532
4533 sb_id = cp->status_blk_num;
4534 tx_cid = 20;
4535 cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4536 if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4537 struct status_block_msix *sblk = cp->status_blk.bnx2;
4538
4539 tx_cid = TX_TSS_CID + sb_id - 1;
4540 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4541 (TX_TSS_CID << 7));
4542 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4543 }
4544 cp->tx_cons = *cp->tx_cons_ptr;
4545
4546 cid_addr = GET_CID_ADDR(tx_cid);
4547 if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
4548 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4549
4550 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4551 cnic_ctx_wr(dev, cid_addr2, i, 0);
4552
4553 offset0 = BNX2_L2CTX_TYPE_XI;
4554 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4555 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4556 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4557 } else {
4558 cnic_init_context(dev, tx_cid);
4559 cnic_init_context(dev, tx_cid + 1);
4560
4561 offset0 = BNX2_L2CTX_TYPE;
4562 offset1 = BNX2_L2CTX_CMD_TYPE;
4563 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4564 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4565 }
4566 val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4567 cnic_ctx_wr(dev, cid_addr, offset0, val);
4568
4569 val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4570 cnic_ctx_wr(dev, cid_addr, offset1, val);
4571
4572 txbd = udev->l2_ring;
4573
4574 buf_map = udev->l2_buf_map;
4575 for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i++, txbd++) {
4576 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4577 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4578 }
4579 val = (u64) ring_map >> 32;
4580 cnic_ctx_wr(dev, cid_addr, offset2, val);
4581 txbd->tx_bd_haddr_hi = val;
4582
4583 val = (u64) ring_map & 0xffffffff;
4584 cnic_ctx_wr(dev, cid_addr, offset3, val);
4585 txbd->tx_bd_haddr_lo = val;
4586 }
4587
4588 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4589 {
4590 struct cnic_local *cp = dev->cnic_priv;
4591 struct cnic_eth_dev *ethdev = cp->ethdev;
4592 struct cnic_uio_dev *udev = cp->udev;
4593 u32 cid_addr, sb_id, val, coal_reg, coal_val;
4594 int i;
4595 struct bnx2_rx_bd *rxbd;
4596 struct status_block *s_blk = cp->status_blk.gen;
4597 dma_addr_t ring_map = udev->l2_ring_map;
4598
4599 sb_id = cp->status_blk_num;
4600 cnic_init_context(dev, 2);
4601 cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4602 coal_reg = BNX2_HC_COMMAND;
4603 coal_val = CNIC_RD(dev, coal_reg);
4604 if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4605 struct status_block_msix *sblk = cp->status_blk.bnx2;
4606
4607 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4608 coal_reg = BNX2_HC_COALESCE_NOW;
4609 coal_val = 1 << (11 + sb_id);
4610 }
4611 i = 0;
4612 while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4613 CNIC_WR(dev, coal_reg, coal_val);
4614 udelay(10);
4615 i++;
4616 barrier();
4617 }
4618 cp->rx_cons = *cp->rx_cons_ptr;
4619
4620 cid_addr = GET_CID_ADDR(2);
4621 val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4622 BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4623 cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4624
4625 if (sb_id == 0)
4626 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4627 else
4628 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4629 cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4630
4631 rxbd = udev->l2_ring + BNX2_PAGE_SIZE;
4632 for (i = 0; i < BNX2_MAX_RX_DESC_CNT; i++, rxbd++) {
4633 dma_addr_t buf_map;
4634 int n = (i % cp->l2_rx_ring_size) + 1;
4635
4636 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4637 rxbd->rx_bd_len = cp->l2_single_buf_size;
4638 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4639 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4640 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4641 }
4642 val = (u64) (ring_map + BNX2_PAGE_SIZE) >> 32;
4643 cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4644 rxbd->rx_bd_haddr_hi = val;
4645
4646 val = (u64) (ring_map + BNX2_PAGE_SIZE) & 0xffffffff;
4647 cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4648 rxbd->rx_bd_haddr_lo = val;
4649
4650 val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4651 cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4652 }
4653
4654 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4655 {
4656 struct kwqe *wqes[1], l2kwqe;
4657
4658 memset(&l2kwqe, 0, sizeof(l2kwqe));
4659 wqes[0] = &l2kwqe;
4660 l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4661 (L2_KWQE_OPCODE_VALUE_FLUSH <<
4662 KWQE_OPCODE_SHIFT) | 2;
4663 dev->submit_kwqes(dev, wqes, 1);
4664 }
4665
4666 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4667 {
4668 struct cnic_local *cp = dev->cnic_priv;
4669 u32 val;
4670
4671 val = cp->func << 2;
4672
4673 cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4674
4675 val = cnic_reg_rd_ind(dev, cp->shmem_base +
4676 BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4677 dev->mac_addr[0] = (u8) (val >> 8);
4678 dev->mac_addr[1] = (u8) val;
4679
4680 CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4681
4682 val = cnic_reg_rd_ind(dev, cp->shmem_base +
4683 BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4684 dev->mac_addr[2] = (u8) (val >> 24);
4685 dev->mac_addr[3] = (u8) (val >> 16);
4686 dev->mac_addr[4] = (u8) (val >> 8);
4687 dev->mac_addr[5] = (u8) val;
4688
4689 CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4690
4691 val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4692 if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4693 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4694
4695 CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4696 CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4697 CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4698 }
4699
4700 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4701 {
4702 struct cnic_local *cp = dev->cnic_priv;
4703 struct cnic_eth_dev *ethdev = cp->ethdev;
4704 struct status_block *sblk = cp->status_blk.gen;
4705 u32 val, kcq_cid_addr, kwq_cid_addr;
4706 int err;
4707
4708 cnic_set_bnx2_mac(dev);
4709
4710 val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4711 val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4712 if (BNX2_PAGE_BITS > 12)
4713 val |= (12 - 8) << 4;
4714 else
4715 val |= (BNX2_PAGE_BITS - 8) << 4;
4716
4717 CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4718
4719 CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4720 CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4721 CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4722
4723 err = cnic_setup_5709_context(dev, 1);
4724 if (err)
4725 return err;
4726
4727 cnic_init_context(dev, KWQ_CID);
4728 cnic_init_context(dev, KCQ_CID);
4729
4730 kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4731 cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4732
4733 cp->max_kwq_idx = MAX_KWQ_IDX;
4734 cp->kwq_prod_idx = 0;
4735 cp->kwq_con_idx = 0;
4736 set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4737
4738 if (BNX2_CHIP(cp) == BNX2_CHIP_5706 || BNX2_CHIP(cp) == BNX2_CHIP_5708)
4739 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4740 else
4741 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4742
4743 /* Initialize the kernel work queue context. */
4744 val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4745 (BNX2_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4746 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4747
4748 val = (BNX2_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4749 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4750
4751 val = ((BNX2_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4752 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4753
4754 val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4755 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4756
4757 val = (u32) cp->kwq_info.pgtbl_map;
4758 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4759
4760 kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4761 cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4762
4763 cp->kcq1.sw_prod_idx = 0;
4764 cp->kcq1.hw_prod_idx_ptr =
4765 &sblk->status_completion_producer_index;
4766
4767 cp->kcq1.status_idx_ptr = &sblk->status_idx;
4768
4769 /* Initialize the kernel complete queue context. */
4770 val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4771 (BNX2_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4772 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4773
4774 val = (BNX2_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4775 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4776
4777 val = ((BNX2_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4778 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4779
4780 val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4781 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4782
4783 val = (u32) cp->kcq1.dma.pgtbl_map;
4784 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4785
4786 cp->int_num = 0;
4787 if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4788 struct status_block_msix *msblk = cp->status_blk.bnx2;
4789 u32 sb_id = cp->status_blk_num;
4790 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4791
4792 cp->kcq1.hw_prod_idx_ptr =
4793 &msblk->status_completion_producer_index;
4794 cp->kcq1.status_idx_ptr = &msblk->status_idx;
4795 cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
4796 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4797 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4798 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4799 }
4800
4801 /* Enable Commnad Scheduler notification when we write to the
4802 * host producer index of the kernel contexts. */
4803 CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4804
4805 /* Enable Command Scheduler notification when we write to either
4806 * the Send Queue or Receive Queue producer indexes of the kernel
4807 * bypass contexts. */
4808 CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4809 CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4810
4811 /* Notify COM when the driver post an application buffer. */
4812 CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4813
4814 /* Set the CP and COM doorbells. These two processors polls the
4815 * doorbell for a non zero value before running. This must be done
4816 * after setting up the kernel queue contexts. */
4817 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4818 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4819
4820 cnic_init_bnx2_tx_ring(dev);
4821 cnic_init_bnx2_rx_ring(dev);
4822
4823 err = cnic_init_bnx2_irq(dev);
4824 if (err) {
4825 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4826 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4827 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4828 return err;
4829 }
4830
4831 ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
4832
4833 return 0;
4834 }
4835
4836 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4837 {
4838 struct cnic_local *cp = dev->cnic_priv;
4839 struct cnic_eth_dev *ethdev = cp->ethdev;
4840 u32 start_offset = ethdev->ctx_tbl_offset;
4841 int i;
4842
4843 for (i = 0; i < cp->ctx_blks; i++) {
4844 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4845 dma_addr_t map = ctx->mapping;
4846
4847 if (cp->ctx_align) {
4848 unsigned long mask = cp->ctx_align - 1;
4849
4850 map = (map + mask) & ~mask;
4851 }
4852
4853 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4854 }
4855 }
4856
4857 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4858 {
4859 struct cnic_local *cp = dev->cnic_priv;
4860 struct cnic_eth_dev *ethdev = cp->ethdev;
4861 int err = 0;
4862
4863 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4864 (unsigned long) dev);
4865 if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4866 err = cnic_request_irq(dev);
4867
4868 return err;
4869 }
4870
4871 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4872 u16 sb_id, u8 sb_index,
4873 u8 disable)
4874 {
4875 struct bnx2x *bp = netdev_priv(dev->netdev);
4876
4877 u32 addr = BAR_CSTRORM_INTMEM +
4878 CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4879 offsetof(struct hc_status_block_data_e1x, index_data) +
4880 sizeof(struct hc_index_data)*sb_index +
4881 offsetof(struct hc_index_data, flags);
4882 u16 flags = CNIC_RD16(dev, addr);
4883 /* clear and set */
4884 flags &= ~HC_INDEX_DATA_HC_ENABLED;
4885 flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4886 HC_INDEX_DATA_HC_ENABLED);
4887 CNIC_WR16(dev, addr, flags);
4888 }
4889
4890 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4891 {
4892 struct cnic_local *cp = dev->cnic_priv;
4893 struct bnx2x *bp = netdev_priv(dev->netdev);
4894 u8 sb_id = cp->status_blk_num;
4895
4896 CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4897 CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4898 offsetof(struct hc_status_block_data_e1x, index_data) +
4899 sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4900 offsetof(struct hc_index_data, timeout), 64 / 4);
4901 cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4902 }
4903
4904 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4905 {
4906 }
4907
4908 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4909 struct client_init_ramrod_data *data)
4910 {
4911 struct cnic_local *cp = dev->cnic_priv;
4912 struct bnx2x *bp = netdev_priv(dev->netdev);
4913 struct cnic_uio_dev *udev = cp->udev;
4914 union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4915 dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4916 struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4917 int i;
4918 u32 cli = cp->ethdev->iscsi_l2_client_id;
4919 u32 val;
4920
4921 memset(txbd, 0, BNX2_PAGE_SIZE);
4922
4923 buf_map = udev->l2_buf_map;
4924 for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4925 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4926 struct eth_tx_parse_bd_e1x *pbd_e1x =
4927 &((txbd + 1)->parse_bd_e1x);
4928 struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2);
4929 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4930
4931 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4932 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4933 reg_bd->addr_hi = start_bd->addr_hi;
4934 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4935 start_bd->nbytes = cpu_to_le16(0x10);
4936 start_bd->nbd = cpu_to_le16(3);
4937 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4938 start_bd->general_data &= ~ETH_TX_START_BD_PARSE_NBDS;
4939 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4940
4941 if (BNX2X_CHIP_IS_E2_PLUS(bp))
4942 pbd_e2->parsing_data = (UNICAST_ADDRESS <<
4943 ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT);
4944 else
4945 pbd_e1x->global_data = (UNICAST_ADDRESS <<
4946 ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT);
4947 }
4948
4949 val = (u64) ring_map >> 32;
4950 txbd->next_bd.addr_hi = cpu_to_le32(val);
4951
4952 data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4953
4954 val = (u64) ring_map & 0xffffffff;
4955 txbd->next_bd.addr_lo = cpu_to_le32(val);
4956
4957 data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4958
4959 /* Other ramrod params */
4960 data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4961 data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4962
4963 /* reset xstorm per client statistics */
4964 if (cli < MAX_STAT_COUNTER_ID) {
4965 data->general.statistics_zero_flg = 1;
4966 data->general.statistics_en_flg = 1;
4967 data->general.statistics_counter_id = cli;
4968 }
4969
4970 cp->tx_cons_ptr =
4971 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4972 }
4973
4974 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4975 struct client_init_ramrod_data *data)
4976 {
4977 struct cnic_local *cp = dev->cnic_priv;
4978 struct bnx2x *bp = netdev_priv(dev->netdev);
4979 struct cnic_uio_dev *udev = cp->udev;
4980 struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4981 BNX2_PAGE_SIZE);
4982 struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4983 (udev->l2_ring + (2 * BNX2_PAGE_SIZE));
4984 struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4985 int i;
4986 u32 cli = cp->ethdev->iscsi_l2_client_id;
4987 int cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
4988 u32 val;
4989 dma_addr_t ring_map = udev->l2_ring_map;
4990
4991 /* General data */
4992 data->general.client_id = cli;
4993 data->general.activate_flg = 1;
4994 data->general.sp_client_id = cli;
4995 data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4996 data->general.func_id = bp->pfid;
4997
4998 for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4999 dma_addr_t buf_map;
5000 int n = (i % cp->l2_rx_ring_size) + 1;
5001
5002 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
5003 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
5004 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
5005 }
5006
5007 val = (u64) (ring_map + BNX2_PAGE_SIZE) >> 32;
5008 rxbd->addr_hi = cpu_to_le32(val);
5009 data->rx.bd_page_base.hi = cpu_to_le32(val);
5010
5011 val = (u64) (ring_map + BNX2_PAGE_SIZE) & 0xffffffff;
5012 rxbd->addr_lo = cpu_to_le32(val);
5013 data->rx.bd_page_base.lo = cpu_to_le32(val);
5014
5015 rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
5016 val = (u64) (ring_map + (2 * BNX2_PAGE_SIZE)) >> 32;
5017 rxcqe->addr_hi = cpu_to_le32(val);
5018 data->rx.cqe_page_base.hi = cpu_to_le32(val);
5019
5020 val = (u64) (ring_map + (2 * BNX2_PAGE_SIZE)) & 0xffffffff;
5021 rxcqe->addr_lo = cpu_to_le32(val);
5022 data->rx.cqe_page_base.lo = cpu_to_le32(val);
5023
5024 /* Other ramrod params */
5025 data->rx.client_qzone_id = cl_qzone_id;
5026 data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
5027 data->rx.status_block_id = BNX2X_DEF_SB_ID;
5028
5029 data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
5030
5031 data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
5032 data->rx.outer_vlan_removal_enable_flg = 1;
5033 data->rx.silent_vlan_removal_flg = 1;
5034 data->rx.silent_vlan_value = 0;
5035 data->rx.silent_vlan_mask = 0xffff;
5036
5037 cp->rx_cons_ptr =
5038 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
5039 cp->rx_cons = *cp->rx_cons_ptr;
5040 }
5041
5042 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
5043 {
5044 struct cnic_local *cp = dev->cnic_priv;
5045 struct bnx2x *bp = netdev_priv(dev->netdev);
5046 u32 pfid = bp->pfid;
5047
5048 cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
5049 CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
5050 cp->kcq1.sw_prod_idx = 0;
5051
5052 if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5053 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5054
5055 cp->kcq1.hw_prod_idx_ptr =
5056 &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5057 cp->kcq1.status_idx_ptr =
5058 &sb->sb.running_index[SM_RX_ID];
5059 } else {
5060 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
5061
5062 cp->kcq1.hw_prod_idx_ptr =
5063 &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
5064 cp->kcq1.status_idx_ptr =
5065 &sb->sb.running_index[SM_RX_ID];
5066 }
5067
5068 if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5069 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
5070
5071 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
5072 USTORM_FCOE_EQ_PROD_OFFSET(pfid);
5073 cp->kcq2.sw_prod_idx = 0;
5074 cp->kcq2.hw_prod_idx_ptr =
5075 &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
5076 cp->kcq2.status_idx_ptr =
5077 &sb->sb.running_index[SM_RX_ID];
5078 }
5079 }
5080
5081 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
5082 {
5083 struct cnic_local *cp = dev->cnic_priv;
5084 struct bnx2x *bp = netdev_priv(dev->netdev);
5085 struct cnic_eth_dev *ethdev = cp->ethdev;
5086 int func, ret;
5087 u32 pfid;
5088
5089 dev->stats_addr = ethdev->addr_drv_info_to_mcp;
5090 cp->func = bp->pf_num;
5091
5092 func = CNIC_FUNC(cp);
5093 pfid = bp->pfid;
5094
5095 ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5096 cp->iscsi_start_cid, 0);
5097
5098 if (ret)
5099 return -ENOMEM;
5100
5101 if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5102 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5103 cp->fcoe_start_cid, 0);
5104
5105 if (ret)
5106 return -ENOMEM;
5107 }
5108
5109 cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
5110
5111 cnic_init_bnx2x_kcq(dev);
5112
5113 /* Only 1 EQ */
5114 CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5115 CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5116 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5117 CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5118 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5119 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5120 CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5121 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5122 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5123 CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5124 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5125 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5126 CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5127 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5128 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5129 CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5130 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5131 CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5132 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5133 CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5134 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5135 HC_INDEX_ISCSI_EQ_CONS);
5136
5137 CNIC_WR(dev, BAR_USTRORM_INTMEM +
5138 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5139 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
5140 CNIC_WR(dev, BAR_USTRORM_INTMEM +
5141 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5142 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
5143
5144 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
5145 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
5146
5147 cnic_setup_bnx2x_context(dev);
5148
5149 ret = cnic_init_bnx2x_irq(dev);
5150 if (ret)
5151 return ret;
5152
5153 ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
5154 return 0;
5155 }
5156
5157 static void cnic_init_rings(struct cnic_dev *dev)
5158 {
5159 struct cnic_local *cp = dev->cnic_priv;
5160 struct bnx2x *bp = netdev_priv(dev->netdev);
5161 struct cnic_uio_dev *udev = cp->udev;
5162
5163 if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5164 return;
5165
5166 if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5167 cnic_init_bnx2_tx_ring(dev);
5168 cnic_init_bnx2_rx_ring(dev);
5169 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5170 } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5171 u32 cli = cp->ethdev->iscsi_l2_client_id;
5172 u32 cid = cp->ethdev->iscsi_l2_cid;
5173 u32 cl_qzone_id;
5174 struct client_init_ramrod_data *data;
5175 union l5cm_specific_data l5_data;
5176 struct ustorm_eth_rx_producers rx_prods = {0};
5177 u32 off, i, *cid_ptr;
5178
5179 rx_prods.bd_prod = 0;
5180 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
5181 barrier();
5182
5183 cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli);
5184
5185 off = BAR_USTRORM_INTMEM +
5186 (BNX2X_CHIP_IS_E2_PLUS(bp) ?
5187 USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
5188 USTORM_RX_PRODS_E1X_OFFSET(BP_PORT(bp), cli));
5189
5190 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5191 CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5192
5193 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5194
5195 data = udev->l2_buf;
5196 cid_ptr = udev->l2_buf + 12;
5197
5198 memset(data, 0, sizeof(*data));
5199
5200 cnic_init_bnx2x_tx_ring(dev, data);
5201 cnic_init_bnx2x_rx_ring(dev, data);
5202
5203 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
5204 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5205
5206 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5207
5208 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5209 cid, ETH_CONNECTION_TYPE, &l5_data);
5210
5211 i = 0;
5212 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5213 ++i < 10)
5214 msleep(1);
5215
5216 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5217 netdev_err(dev->netdev,
5218 "iSCSI CLIENT_SETUP did not complete\n");
5219 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5220 cnic_ring_ctl(dev, cid, cli, 1);
5221 *cid_ptr = cid >> 4;
5222 *(cid_ptr + 1) = cid * bp->db_size;
5223 }
5224 }
5225
5226 static void cnic_shutdown_rings(struct cnic_dev *dev)
5227 {
5228 struct cnic_local *cp = dev->cnic_priv;
5229 struct cnic_uio_dev *udev = cp->udev;
5230 void *rx_ring;
5231
5232 if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
5233 return;
5234
5235 if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
5236 cnic_shutdown_bnx2_rx_ring(dev);
5237 } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5238 u32 cli = cp->ethdev->iscsi_l2_client_id;
5239 u32 cid = cp->ethdev->iscsi_l2_cid;
5240 union l5cm_specific_data l5_data;
5241 int i;
5242
5243 cnic_ring_ctl(dev, cid, cli, 0);
5244
5245 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
5246
5247 l5_data.phy_address.lo = cli;
5248 l5_data.phy_address.hi = 0;
5249 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5250 cid, ETH_CONNECTION_TYPE, &l5_data);
5251 i = 0;
5252 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5253 ++i < 10)
5254 msleep(1);
5255
5256 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5257 netdev_err(dev->netdev,
5258 "iSCSI CLIENT_HALT did not complete\n");
5259 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5260
5261 memset(&l5_data, 0, sizeof(l5_data));
5262 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5263 cid, NONE_CONNECTION_TYPE, &l5_data);
5264 msleep(10);
5265 }
5266 clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5267 rx_ring = udev->l2_ring + BNX2_PAGE_SIZE;
5268 memset(rx_ring, 0, BNX2_PAGE_SIZE);
5269 }
5270
5271 static int cnic_register_netdev(struct cnic_dev *dev)
5272 {
5273 struct cnic_local *cp = dev->cnic_priv;
5274 struct cnic_eth_dev *ethdev = cp->ethdev;
5275 int err;
5276
5277 if (!ethdev)
5278 return -ENODEV;
5279
5280 if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5281 return 0;
5282
5283 err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5284 if (err)
5285 netdev_err(dev->netdev, "register_cnic failed\n");
5286
5287 /* Read iSCSI config again. On some bnx2x device, iSCSI config
5288 * can change after firmware is downloaded.
5289 */
5290 dev->max_iscsi_conn = ethdev->max_iscsi_conn;
5291 if (ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
5292 dev->max_iscsi_conn = 0;
5293
5294 return err;
5295 }
5296
5297 static void cnic_unregister_netdev(struct cnic_dev *dev)
5298 {
5299 struct cnic_local *cp = dev->cnic_priv;
5300 struct cnic_eth_dev *ethdev = cp->ethdev;
5301
5302 if (!ethdev)
5303 return;
5304
5305 ethdev->drv_unregister_cnic(dev->netdev);
5306 }
5307
5308 static int cnic_start_hw(struct cnic_dev *dev)
5309 {
5310 struct cnic_local *cp = dev->cnic_priv;
5311 struct cnic_eth_dev *ethdev = cp->ethdev;
5312 int err;
5313
5314 if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5315 return -EALREADY;
5316
5317 dev->regview = ethdev->io_base;
5318 pci_dev_get(dev->pcidev);
5319 cp->func = PCI_FUNC(dev->pcidev->devfn);
5320 cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5321 cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5322
5323 err = cp->alloc_resc(dev);
5324 if (err) {
5325 netdev_err(dev->netdev, "allocate resource failure\n");
5326 goto err1;
5327 }
5328
5329 err = cp->start_hw(dev);
5330 if (err)
5331 goto err1;
5332
5333 err = cnic_cm_open(dev);
5334 if (err)
5335 goto err1;
5336
5337 set_bit(CNIC_F_CNIC_UP, &dev->flags);
5338
5339 cp->enable_int(dev);
5340
5341 return 0;
5342
5343 err1:
5344 cp->free_resc(dev);
5345 pci_dev_put(dev->pcidev);
5346 return err;
5347 }
5348
5349 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5350 {
5351 cnic_disable_bnx2_int_sync(dev);
5352
5353 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5354 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5355
5356 cnic_init_context(dev, KWQ_CID);
5357 cnic_init_context(dev, KCQ_CID);
5358
5359 cnic_setup_5709_context(dev, 0);
5360 cnic_free_irq(dev);
5361
5362 cnic_free_resc(dev);
5363 }
5364
5365
5366 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5367 {
5368 struct cnic_local *cp = dev->cnic_priv;
5369 struct bnx2x *bp = netdev_priv(dev->netdev);
5370 u32 hc_index = HC_INDEX_ISCSI_EQ_CONS;
5371 u32 sb_id = cp->status_blk_num;
5372 u32 idx_off, syn_off;
5373
5374 cnic_free_irq(dev);
5375
5376 if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5377 idx_off = offsetof(struct hc_status_block_e2, index_values) +
5378 (hc_index * sizeof(u16));
5379
5380 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E2_OFFSET(hc_index, sb_id);
5381 } else {
5382 idx_off = offsetof(struct hc_status_block_e1x, index_values) +
5383 (hc_index * sizeof(u16));
5384
5385 syn_off = CSTORM_HC_SYNC_LINE_INDEX_E1X_OFFSET(hc_index, sb_id);
5386 }
5387 CNIC_WR16(dev, BAR_CSTRORM_INTMEM + syn_off, 0);
5388 CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_OFFSET(sb_id) +
5389 idx_off, 0);
5390
5391 *cp->kcq1.hw_prod_idx_ptr = 0;
5392 CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5393 CSTORM_ISCSI_EQ_CONS_OFFSET(bp->pfid, 0), 0);
5394 CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5395 cnic_free_resc(dev);
5396 }
5397
5398 static void cnic_stop_hw(struct cnic_dev *dev)
5399 {
5400 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5401 struct cnic_local *cp = dev->cnic_priv;
5402 int i = 0;
5403
5404 /* Need to wait for the ring shutdown event to complete
5405 * before clearing the CNIC_UP flag.
5406 */
5407 while (cp->udev && cp->udev->uio_dev != -1 && i < 15) {
5408 msleep(100);
5409 i++;
5410 }
5411 cnic_shutdown_rings(dev);
5412 cp->stop_cm(dev);
5413 cp->ethdev->drv_state &= ~CNIC_DRV_STATE_HANDLES_IRQ;
5414 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5415 RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5416 synchronize_rcu();
5417 cnic_cm_shutdown(dev);
5418 cp->stop_hw(dev);
5419 pci_dev_put(dev->pcidev);
5420 }
5421 }
5422
5423 static void cnic_free_dev(struct cnic_dev *dev)
5424 {
5425 int i = 0;
5426
5427 while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5428 msleep(100);
5429 i++;
5430 }
5431 if (atomic_read(&dev->ref_count) != 0)
5432 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5433
5434 netdev_info(dev->netdev, "Removed CNIC device\n");
5435 dev_put(dev->netdev);
5436 kfree(dev);
5437 }
5438
5439 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5440 struct pci_dev *pdev)
5441 {
5442 struct cnic_dev *cdev;
5443 struct cnic_local *cp;
5444 int alloc_size;
5445
5446 alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5447
5448 cdev = kzalloc(alloc_size, GFP_KERNEL);
5449 if (cdev == NULL)
5450 return NULL;
5451
5452 cdev->netdev = dev;
5453 cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5454 cdev->register_device = cnic_register_device;
5455 cdev->unregister_device = cnic_unregister_device;
5456 cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5457
5458 cp = cdev->cnic_priv;
5459 cp->dev = cdev;
5460 cp->l2_single_buf_size = 0x400;
5461 cp->l2_rx_ring_size = 3;
5462
5463 spin_lock_init(&cp->cnic_ulp_lock);
5464
5465 netdev_info(dev, "Added CNIC device\n");
5466
5467 return cdev;
5468 }
5469
5470 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5471 {
5472 struct pci_dev *pdev;
5473 struct cnic_dev *cdev;
5474 struct cnic_local *cp;
5475 struct bnx2 *bp = netdev_priv(dev);
5476 struct cnic_eth_dev *ethdev = NULL;
5477
5478 if (bp->cnic_probe)
5479 ethdev = (bp->cnic_probe)(dev);
5480
5481 if (!ethdev)
5482 return NULL;
5483
5484 pdev = ethdev->pdev;
5485 if (!pdev)
5486 return NULL;
5487
5488 dev_hold(dev);
5489 pci_dev_get(pdev);
5490 if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5491 pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5492 (pdev->revision < 0x10)) {
5493 pci_dev_put(pdev);
5494 goto cnic_err;
5495 }
5496 pci_dev_put(pdev);
5497
5498 cdev = cnic_alloc_dev(dev, pdev);
5499 if (cdev == NULL)
5500 goto cnic_err;
5501
5502 set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5503 cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5504
5505 cp = cdev->cnic_priv;
5506 cp->ethdev = ethdev;
5507 cdev->pcidev = pdev;
5508 cp->chip_id = ethdev->chip_id;
5509
5510 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5511
5512 cp->cnic_ops = &cnic_bnx2_ops;
5513 cp->start_hw = cnic_start_bnx2_hw;
5514 cp->stop_hw = cnic_stop_bnx2_hw;
5515 cp->setup_pgtbl = cnic_setup_page_tbl;
5516 cp->alloc_resc = cnic_alloc_bnx2_resc;
5517 cp->free_resc = cnic_free_resc;
5518 cp->start_cm = cnic_cm_init_bnx2_hw;
5519 cp->stop_cm = cnic_cm_stop_bnx2_hw;
5520 cp->enable_int = cnic_enable_bnx2_int;
5521 cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5522 cp->close_conn = cnic_close_bnx2_conn;
5523 return cdev;
5524
5525 cnic_err:
5526 dev_put(dev);
5527 return NULL;
5528 }
5529
5530 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5531 {
5532 struct pci_dev *pdev;
5533 struct cnic_dev *cdev;
5534 struct cnic_local *cp;
5535 struct bnx2x *bp = netdev_priv(dev);
5536 struct cnic_eth_dev *ethdev = NULL;
5537
5538 if (bp->cnic_probe)
5539 ethdev = bp->cnic_probe(dev);
5540
5541 if (!ethdev)
5542 return NULL;
5543
5544 pdev = ethdev->pdev;
5545 if (!pdev)
5546 return NULL;
5547
5548 dev_hold(dev);
5549 cdev = cnic_alloc_dev(dev, pdev);
5550 if (cdev == NULL) {
5551 dev_put(dev);
5552 return NULL;
5553 }
5554
5555 set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5556 cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5557
5558 cp = cdev->cnic_priv;
5559 cp->ethdev = ethdev;
5560 cdev->pcidev = pdev;
5561 cp->chip_id = ethdev->chip_id;
5562
5563 cdev->stats_addr = ethdev->addr_drv_info_to_mcp;
5564
5565 if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5566 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5567 if (CNIC_SUPPORTS_FCOE(bp)) {
5568 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5569 cdev->max_fcoe_exchanges = ethdev->max_fcoe_exchanges;
5570 }
5571
5572 if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
5573 cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
5574
5575 memcpy(cdev->mac_addr, ethdev->iscsi_mac, ETH_ALEN);
5576
5577 cp->cnic_ops = &cnic_bnx2x_ops;
5578 cp->start_hw = cnic_start_bnx2x_hw;
5579 cp->stop_hw = cnic_stop_bnx2x_hw;
5580 cp->setup_pgtbl = cnic_setup_page_tbl_le;
5581 cp->alloc_resc = cnic_alloc_bnx2x_resc;
5582 cp->free_resc = cnic_free_resc;
5583 cp->start_cm = cnic_cm_init_bnx2x_hw;
5584 cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5585 cp->enable_int = cnic_enable_bnx2x_int;
5586 cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5587 if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
5588 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5589 cp->arm_int = cnic_arm_bnx2x_e2_msix;
5590 } else {
5591 cp->ack_int = cnic_ack_bnx2x_msix;
5592 cp->arm_int = cnic_arm_bnx2x_msix;
5593 }
5594 cp->close_conn = cnic_close_bnx2x_conn;
5595 return cdev;
5596 }
5597
5598 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5599 {
5600 struct ethtool_drvinfo drvinfo;
5601 struct cnic_dev *cdev = NULL;
5602
5603 if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5604 memset(&drvinfo, 0, sizeof(drvinfo));
5605 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5606
5607 if (!strcmp(drvinfo.driver, "bnx2"))
5608 cdev = init_bnx2_cnic(dev);
5609 if (!strcmp(drvinfo.driver, "bnx2x"))
5610 cdev = init_bnx2x_cnic(dev);
5611 if (cdev) {
5612 write_lock(&cnic_dev_lock);
5613 list_add(&cdev->list, &cnic_dev_list);
5614 write_unlock(&cnic_dev_lock);
5615 }
5616 }
5617 return cdev;
5618 }
5619
5620 static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
5621 u16 vlan_id)
5622 {
5623 int if_type;
5624
5625 rcu_read_lock();
5626 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5627 struct cnic_ulp_ops *ulp_ops;
5628 void *ctx;
5629
5630 ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
5631 if (!ulp_ops || !ulp_ops->indicate_netevent)
5632 continue;
5633
5634 ctx = cp->ulp_handle[if_type];
5635
5636 ulp_ops->indicate_netevent(ctx, event, vlan_id);
5637 }
5638 rcu_read_unlock();
5639 }
5640
5641 /* netdev event handler */
5642 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5643 void *ptr)
5644 {
5645 struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
5646 struct cnic_dev *dev;
5647 int new_dev = 0;
5648
5649 dev = cnic_from_netdev(netdev);
5650
5651 if (!dev && event == NETDEV_REGISTER) {
5652 /* Check for the hot-plug device */
5653 dev = is_cnic_dev(netdev);
5654 if (dev) {
5655 new_dev = 1;
5656 cnic_hold(dev);
5657 }
5658 }
5659 if (dev) {
5660 struct cnic_local *cp = dev->cnic_priv;
5661
5662 if (new_dev)
5663 cnic_ulp_init(dev);
5664 else if (event == NETDEV_UNREGISTER)
5665 cnic_ulp_exit(dev);
5666
5667 if (event == NETDEV_UP) {
5668 if (cnic_register_netdev(dev) != 0) {
5669 cnic_put(dev);
5670 goto done;
5671 }
5672 if (!cnic_start_hw(dev))
5673 cnic_ulp_start(dev);
5674 }
5675
5676 cnic_rcv_netevent(cp, event, 0);
5677
5678 if (event == NETDEV_GOING_DOWN) {
5679 cnic_ulp_stop(dev);
5680 cnic_stop_hw(dev);
5681 cnic_unregister_netdev(dev);
5682 } else if (event == NETDEV_UNREGISTER) {
5683 write_lock(&cnic_dev_lock);
5684 list_del_init(&dev->list);
5685 write_unlock(&cnic_dev_lock);
5686
5687 cnic_put(dev);
5688 cnic_free_dev(dev);
5689 goto done;
5690 }
5691 cnic_put(dev);
5692 } else {
5693 struct net_device *realdev;
5694 u16 vid;
5695
5696 vid = cnic_get_vlan(netdev, &realdev);
5697 if (realdev) {
5698 dev = cnic_from_netdev(realdev);
5699 if (dev) {
5700 vid |= VLAN_TAG_PRESENT;
5701 cnic_rcv_netevent(dev->cnic_priv, event, vid);
5702 cnic_put(dev);
5703 }
5704 }
5705 }
5706 done:
5707 return NOTIFY_DONE;
5708 }
5709
5710 static struct notifier_block cnic_netdev_notifier = {
5711 .notifier_call = cnic_netdev_event
5712 };
5713
5714 static void cnic_release(void)
5715 {
5716 struct cnic_uio_dev *udev;
5717
5718 while (!list_empty(&cnic_udev_list)) {
5719 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5720 list);
5721 cnic_free_uio(udev);
5722 }
5723 }
5724
5725 static int __init cnic_init(void)
5726 {
5727 int rc = 0;
5728
5729 pr_info("%s", version);
5730
5731 rc = register_netdevice_notifier(&cnic_netdev_notifier);
5732 if (rc) {
5733 cnic_release();
5734 return rc;
5735 }
5736
5737 cnic_wq = create_singlethread_workqueue("cnic_wq");
5738 if (!cnic_wq) {
5739 cnic_release();
5740 unregister_netdevice_notifier(&cnic_netdev_notifier);
5741 return -ENOMEM;
5742 }
5743
5744 return 0;
5745 }
5746
5747 static void __exit cnic_exit(void)
5748 {
5749 unregister_netdevice_notifier(&cnic_netdev_notifier);
5750 cnic_release();
5751 destroy_workqueue(cnic_wq);
5752 }
5753
5754 module_init(cnic_init);
5755 module_exit(cnic_exit);
Linux kernel - Deliverables
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