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