1
2
3
4
5
6
7
8
9
10
11
12
13
14
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 goto done;
1922 }
1923 ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1924 if (ret < 0) {
1925 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1926 atomic_dec(&cp->iscsi_conn);
1927 goto done;
1928 }
1929
1930 kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1931 kcqe.iscsi_conn_context_id = BNX2X_HW_CID(bp, cp->ctx_tbl[l5_cid].cid);
1932
1933done:
1934 cqes[0] = (struct kcqe *) &kcqe;
1935 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1936 return 0;
1937}
1938
1939
1940static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1941{
1942 struct cnic_local *cp = dev->cnic_priv;
1943 struct iscsi_kwqe_conn_update *req =
1944 (struct iscsi_kwqe_conn_update *) kwqe;
1945 void *data;
1946 union l5cm_specific_data l5_data;
1947 u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1948 int ret;
1949
1950 if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1951 return -EINVAL;
1952
1953 data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1954 if (!data)
1955 return -ENOMEM;
1956
1957 memcpy(data, kwqe, sizeof(struct kwqe));
1958
1959 ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1960 req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1961 return ret;
1962}
1963
1964static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1965{
1966 struct cnic_local *cp = dev->cnic_priv;
1967 struct bnx2x *bp = netdev_priv(dev->netdev);
1968 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1969 union l5cm_specific_data l5_data;
1970 int ret;
1971 u32 hw_cid;
1972
1973 init_waitqueue_head(&ctx->waitq);
1974 ctx->wait_cond = 0;
1975 memset(&l5_data, 0, sizeof(l5_data));
1976 hw_cid = BNX2X_HW_CID(bp, ctx->cid);
1977
1978 ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1979 hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1980
1981 if (ret == 0) {
1982 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1983 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1984 return -EBUSY;
1985 }
1986
1987 return 0;
1988}
1989
1990static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1991{
1992 struct cnic_local *cp = dev->cnic_priv;
1993 struct iscsi_kwqe_conn_destroy *req =
1994 (struct iscsi_kwqe_conn_destroy *) kwqe;
1995 u32 l5_cid = req->reserved0;
1996 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1997 int ret = 0;
1998 struct iscsi_kcqe kcqe;
1999 struct kcqe *cqes[1];
2000
2001 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2002 goto skip_cfc_delete;
2003
2004 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
2005 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
2006
2007 if (delta > (2 * HZ))
2008 delta = 0;
2009
2010 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2011 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
2012 goto destroy_reply;
2013 }
2014
2015 ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
2016
2017skip_cfc_delete:
2018 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2019
2020 if (!ret) {
2021 atomic_dec(&cp->iscsi_conn);
2022 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2023 }
2024
2025destroy_reply:
2026 memset(&kcqe, 0, sizeof(kcqe));
2027 kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
2028 kcqe.iscsi_conn_id = l5_cid;
2029 kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
2030 kcqe.iscsi_conn_context_id = req->context_id;
2031
2032 cqes[0] = (struct kcqe *) &kcqe;
2033 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
2034
2035 return 0;
2036}
2037
2038static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
2039 struct l4_kwq_connect_req1 *kwqe1,
2040 struct l4_kwq_connect_req3 *kwqe3,
2041 struct l5cm_active_conn_buffer *conn_buf)
2042{
2043 struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
2044 struct l5cm_xstorm_conn_buffer *xstorm_buf =
2045 &conn_buf->xstorm_conn_buffer;
2046 struct l5cm_tstorm_conn_buffer *tstorm_buf =
2047 &conn_buf->tstorm_conn_buffer;
2048 struct regpair context_addr;
2049 u32 cid = BNX2X_SW_CID(kwqe1->cid);
2050 struct in6_addr src_ip, dst_ip;
2051 int i;
2052 u32 *addrp;
2053
2054 addrp = (u32 *) &conn_addr->local_ip_addr;
2055 for (i = 0; i < 4; i++, addrp++)
2056 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2057
2058 addrp = (u32 *) &conn_addr->remote_ip_addr;
2059 for (i = 0; i < 4; i++, addrp++)
2060 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
2061
2062 cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
2063
2064 xstorm_buf->context_addr.hi = context_addr.hi;
2065 xstorm_buf->context_addr.lo = context_addr.lo;
2066 xstorm_buf->mss = 0xffff;
2067 xstorm_buf->rcv_buf = kwqe3->rcv_buf;
2068 if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
2069 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
2070 xstorm_buf->pseudo_header_checksum =
2071 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
2072
2073 if (kwqe3->ka_timeout) {
2074 tstorm_buf->ka_enable = 1;
2075 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
2076 tstorm_buf->ka_interval = kwqe3->ka_interval;
2077 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
2078 }
2079 tstorm_buf->max_rt_time = 0xffffffff;
2080}
2081
2082static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
2083{
2084 struct bnx2x *bp = netdev_priv(dev->netdev);
2085 u32 pfid = bp->pfid;
2086 u8 *mac = dev->mac_addr;
2087
2088 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2089 XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2090 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2091 XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2092 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2093 XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2094 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2095 XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2096 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2097 XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2098 CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2099 XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2100
2101 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2102 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2103 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2104 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2105 mac[4]);
2106 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2107 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2108 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2109 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2110 mac[2]);
2111 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2112 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2113 CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2114 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2115 mac[0]);
2116}
2117
2118static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2119 u32 num, int *work)
2120{
2121 struct cnic_local *cp = dev->cnic_priv;
2122 struct bnx2x *bp = netdev_priv(dev->netdev);
2123 struct l4_kwq_connect_req1 *kwqe1 =
2124 (struct l4_kwq_connect_req1 *) wqes[0];
2125 struct l4_kwq_connect_req3 *kwqe3;
2126 struct l5cm_active_conn_buffer *conn_buf;
2127 struct l5cm_conn_addr_params *conn_addr;
2128 union l5cm_specific_data l5_data;
2129 u32 l5_cid = kwqe1->pg_cid;
2130 struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2131 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2132 int ret;
2133
2134 if (num < 2) {
2135 *work = num;
2136 return -EINVAL;
2137 }
2138
2139 if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2140 *work = 3;
2141 else
2142 *work = 2;
2143
2144 if (num < *work) {
2145 *work = num;
2146 return -EINVAL;
2147 }
2148
2149 if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2150 netdev_err(dev->netdev, "conn_buf size too big\n");
2151 return -ENOMEM;
2152 }
2153 conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2154 if (!conn_buf)
2155 return -ENOMEM;
2156
2157 memset(conn_buf, 0, sizeof(*conn_buf));
2158
2159 conn_addr = &conn_buf->conn_addr_buf;
2160 conn_addr->remote_addr_0 = csk->ha[0];
2161 conn_addr->remote_addr_1 = csk->ha[1];
2162 conn_addr->remote_addr_2 = csk->ha[2];
2163 conn_addr->remote_addr_3 = csk->ha[3];
2164 conn_addr->remote_addr_4 = csk->ha[4];
2165 conn_addr->remote_addr_5 = csk->ha[5];
2166
2167 if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2168 struct l4_kwq_connect_req2 *kwqe2 =
2169 (struct l4_kwq_connect_req2 *) wqes[1];
2170
2171 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2172 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2173 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2174
2175 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2176 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2177 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2178 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2179 }
2180 kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2181
2182 conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2183 conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2184 conn_addr->local_tcp_port = kwqe1->src_port;
2185 conn_addr->remote_tcp_port = kwqe1->dst_port;
2186
2187 conn_addr->pmtu = kwqe3->pmtu;
2188 cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2189
2190 CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2191 XSTORM_ISCSI_LOCAL_VLAN_OFFSET(bp->pfid), csk->vlan_id);
2192
2193 ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2194 kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2195 if (!ret)
2196 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2197
2198 return ret;
2199}
2200
2201static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2202{
2203 struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2204 union l5cm_specific_data l5_data;
2205 int ret;
2206
2207 memset(&l5_data, 0, sizeof(l5_data));
2208 ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2209 req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2210 return ret;
2211}
2212
2213static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2214{
2215 struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2216 union l5cm_specific_data l5_data;
2217 int ret;
2218
2219 memset(&l5_data, 0, sizeof(l5_data));
2220 ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2221 req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2222 return ret;
2223}
2224static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2225{
2226 struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2227 struct l4_kcq kcqe;
2228 struct kcqe *cqes[1];
2229
2230 memset(&kcqe, 0, sizeof(kcqe));
2231 kcqe.pg_host_opaque = req->host_opaque;
2232 kcqe.pg_cid = req->host_opaque;
2233 kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2234 cqes[0] = (struct kcqe *) &kcqe;
2235 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2236 return 0;
2237}
2238
2239static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2240{
2241 struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2242 struct l4_kcq kcqe;
2243 struct kcqe *cqes[1];
2244
2245 memset(&kcqe, 0, sizeof(kcqe));
2246 kcqe.pg_host_opaque = req->pg_host_opaque;
2247 kcqe.pg_cid = req->pg_cid;
2248 kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2249 cqes[0] = (struct kcqe *) &kcqe;
2250 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2251 return 0;
2252}
2253
2254static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2255{
2256 struct fcoe_kwqe_stat *req;
2257 struct fcoe_stat_ramrod_params *fcoe_stat;
2258 union l5cm_specific_data l5_data;
2259 struct cnic_local *cp = dev->cnic_priv;
2260 struct bnx2x *bp = netdev_priv(dev->netdev);
2261 int ret;
2262 u32 cid;
2263
2264 req = (struct fcoe_kwqe_stat *) kwqe;
2265 cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2266
2267 fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2268 if (!fcoe_stat)
2269 return -ENOMEM;
2270
2271 memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2272 memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2273
2274 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2275 FCOE_CONNECTION_TYPE, &l5_data);
2276 return ret;
2277}
2278
2279static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2280 u32 num, int *work)
2281{
2282 int ret;
2283 struct cnic_local *cp = dev->cnic_priv;
2284 struct bnx2x *bp = netdev_priv(dev->netdev);
2285 u32 cid;
2286 struct fcoe_init_ramrod_params *fcoe_init;
2287 struct fcoe_kwqe_init1 *req1;
2288 struct fcoe_kwqe_init2 *req2;
2289 struct fcoe_kwqe_init3 *req3;
2290 union l5cm_specific_data l5_data;
2291
2292 if (num < 3) {
2293 *work = num;
2294 return -EINVAL;
2295 }
2296 req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2297 req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2298 req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2299 if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2300 *work = 1;
2301 return -EINVAL;
2302 }
2303 if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2304 *work = 2;
2305 return -EINVAL;
2306 }
2307
2308 if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2309 netdev_err(dev->netdev, "fcoe_init size too big\n");
2310 return -ENOMEM;
2311 }
2312 fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2313 if (!fcoe_init)
2314 return -ENOMEM;
2315
2316 memset(fcoe_init, 0, sizeof(*fcoe_init));
2317 memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2318 memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2319 memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2320 fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2321 fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2322 fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2323
2324 fcoe_init->sb_num = cp->status_blk_num;
2325 fcoe_init->eq_prod = MAX_KCQ_IDX;
2326 fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2327 cp->kcq2.sw_prod_idx = 0;
2328
2329 cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2330 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2331 FCOE_CONNECTION_TYPE, &l5_data);
2332 *work = 3;
2333 return ret;
2334}
2335
2336static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2337 u32 num, int *work)
2338{
2339 int ret = 0;
2340 u32 cid = -1, l5_cid;
2341 struct cnic_local *cp = dev->cnic_priv;
2342 struct bnx2x *bp = netdev_priv(dev->netdev);
2343 struct fcoe_kwqe_conn_offload1 *req1;
2344 struct fcoe_kwqe_conn_offload2 *req2;
2345 struct fcoe_kwqe_conn_offload3 *req3;
2346 struct fcoe_kwqe_conn_offload4 *req4;
2347 struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2348 struct cnic_context *ctx;
2349 struct fcoe_context *fctx;
2350 struct regpair ctx_addr;
2351 union l5cm_specific_data l5_data;
2352 struct fcoe_kcqe kcqe;
2353 struct kcqe *cqes[1];
2354
2355 if (num < 4) {
2356 *work = num;
2357 return -EINVAL;
2358 }
2359 req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2360 req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2361 req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2362 req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2363
2364 *work = 4;
2365
2366 l5_cid = req1->fcoe_conn_id;
2367 if (l5_cid >= dev->max_fcoe_conn)
2368 goto err_reply;
2369
2370 l5_cid += BNX2X_FCOE_L5_CID_BASE;
2371
2372 ctx = &cp->ctx_tbl[l5_cid];
2373 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2374 goto err_reply;
2375
2376 ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2377 if (ret) {
2378 ret = 0;
2379 goto err_reply;
2380 }
2381 cid = ctx->cid;
2382
2383 fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2384 if (fctx) {
2385 u32 hw_cid = BNX2X_HW_CID(bp, cid);
2386 u32 val;
2387
2388 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2389 FCOE_CONNECTION_TYPE);
2390 fctx->xstorm_ag_context.cdu_reserved = val;
2391 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2392 FCOE_CONNECTION_TYPE);
2393 fctx->ustorm_ag_context.cdu_usage = val;
2394 }
2395 if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2396 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2397 goto err_reply;
2398 }
2399 fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2400 if (!fcoe_offload)
2401 goto err_reply;
2402
2403 memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2404 memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2405 memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2406 memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2407 memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2408
2409 cid = BNX2X_HW_CID(bp, cid);
2410 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2411 FCOE_CONNECTION_TYPE, &l5_data);
2412 if (!ret)
2413 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2414
2415 return ret;
2416
2417err_reply:
2418 if (cid != -1)
2419 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2420
2421 memset(&kcqe, 0, sizeof(kcqe));
2422 kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2423 kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2424 kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2425
2426 cqes[0] = (struct kcqe *) &kcqe;
2427 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2428 return ret;
2429}
2430
2431static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2432{
2433 struct fcoe_kwqe_conn_enable_disable *req;
2434 struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2435 union l5cm_specific_data l5_data;
2436 int ret;
2437 u32 cid, l5_cid;
2438 struct cnic_local *cp = dev->cnic_priv;
2439
2440 req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2441 cid = req->context_id;
2442 l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2443
2444 if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2445 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2446 return -ENOMEM;
2447 }
2448 fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2449 if (!fcoe_enable)
2450 return -ENOMEM;
2451
2452 memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2453 memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2454 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2455 FCOE_CONNECTION_TYPE, &l5_data);
2456 return ret;
2457}
2458
2459static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2460{
2461 struct fcoe_kwqe_conn_enable_disable *req;
2462 struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2463 union l5cm_specific_data l5_data;
2464 int ret;
2465 u32 cid, l5_cid;
2466 struct cnic_local *cp = dev->cnic_priv;
2467
2468 req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2469 cid = req->context_id;
2470 l5_cid = req->conn_id;
2471 if (l5_cid >= dev->max_fcoe_conn)
2472 return -EINVAL;
2473
2474 l5_cid += BNX2X_FCOE_L5_CID_BASE;
2475
2476 if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2477 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2478 return -ENOMEM;
2479 }
2480 fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2481 if (!fcoe_disable)
2482 return -ENOMEM;
2483
2484 memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2485 memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2486 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2487 FCOE_CONNECTION_TYPE, &l5_data);
2488 return ret;
2489}
2490
2491static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2492{
2493 struct fcoe_kwqe_conn_destroy *req;
2494 union l5cm_specific_data l5_data;
2495 int ret;
2496 u32 cid, l5_cid;
2497 struct cnic_local *cp = dev->cnic_priv;
2498 struct cnic_context *ctx;
2499 struct fcoe_kcqe kcqe;
2500 struct kcqe *cqes[1];
2501
2502 req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2503 cid = req->context_id;
2504 l5_cid = req->conn_id;
2505 if (l5_cid >= dev->max_fcoe_conn)
2506 return -EINVAL;
2507
2508 l5_cid += BNX2X_FCOE_L5_CID_BASE;
2509
2510 ctx = &cp->ctx_tbl[l5_cid];
2511
2512 init_waitqueue_head(&ctx->waitq);
2513 ctx->wait_cond = 0;
2514
2515 memset(&kcqe, 0, sizeof(kcqe));
2516 kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
2517 memset(&l5_data, 0, sizeof(l5_data));
2518 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2519 FCOE_CONNECTION_TYPE, &l5_data);
2520 if (ret == 0) {
2521 wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
2522 if (ctx->wait_cond)
2523 kcqe.completion_status = 0;
2524 }
2525
2526 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2527 queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
2528
2529 kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2530 kcqe.fcoe_conn_id = req->conn_id;
2531 kcqe.fcoe_conn_context_id = cid;
2532
2533 cqes[0] = (struct kcqe *) &kcqe;
2534 cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2535 return ret;
2536}
2537
2538static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2539{
2540 struct cnic_local *cp = dev->cnic_priv;
2541 u32 i;
2542
2543 for (i = start_cid; i < cp->max_cid_space; i++) {
2544 struct cnic_context *ctx = &cp->ctx_tbl[i];
2545 int j;
2546
2547 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2548 msleep(10);
2549
2550 for (j = 0; j < 5; j++) {
2551 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2552 break;
2553 msleep(20);
2554 }
2555
2556 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2557 netdev_warn(dev->netdev, "CID %x not deleted\n",
2558 ctx->cid);
2559 }
2560}
2561
2562static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2563{
2564 union l5cm_specific_data l5_data;
2565 struct cnic_local *cp = dev->cnic_priv;
2566 struct bnx2x *bp = netdev_priv(dev->netdev);
2567 int ret;
2568 u32 cid;
2569
2570 cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2571
2572 cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
2573
2574 memset(&l5_data, 0, sizeof(l5_data));
2575 ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2576 FCOE_CONNECTION_TYPE, &l5_data);
2577 return ret;
2578}
2579
2580static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
2581{
2582 struct cnic_local *cp = dev->cnic_priv;
2583 struct kcqe kcqe;
2584 struct kcqe *cqes[1];
2585 u32 cid;
2586 u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2587 u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2588 u32 kcqe_op;
2589 int ulp_type;
2590
2591 cid = kwqe->kwqe_info0;
2592 memset(&kcqe, 0, sizeof(kcqe));
2593
2594 if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
2595 u32 l5_cid = 0;
2596
2597 ulp_type = CNIC_ULP_FCOE;
2598 if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
2599 struct fcoe_kwqe_conn_enable_disable *req;
2600
2601 req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2602 kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
2603 cid = req->context_id;
2604 l5_cid = req->conn_id;
2605 } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
2606 kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
2607 } else {
2608 return;
2609 }
2610 kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
2611 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2612 kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2613 kcqe.kcqe_info2 = cid;
2614 kcqe.kcqe_info0 = l5_cid;
2615
2616 } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2617 ulp_type = CNIC_ULP_ISCSI;
2618 if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
2619 cid = kwqe->kwqe_info1;
2620
2621 kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
2622 kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2623 kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2624 kcqe.kcqe_info2 = cid;
2625 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
2626
2627 } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
2628 struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
2629
2630 ulp_type = CNIC_ULP_L4;
2631 if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
2632 kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
2633 else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
2634 kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
2635 else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
2636 kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
2637 else
2638 return;
2639
2640 kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
2641 KCQE_FLAGS_LAYER_MASK_L4;
2642 l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2643 l4kcqe->cid = cid;
2644 cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
2645 } else {
2646 return;
2647 }
2648
2649 cqes[0] = &kcqe;
2650 cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
2651}
2652
2653static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2654 struct kwqe *wqes[], u32 num_wqes)
2655{
2656 int i, work, ret;
2657 u32 opcode;
2658 struct kwqe *kwqe;
2659
2660 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2661 return -EAGAIN;
2662
2663 for (i = 0; i < num_wqes; ) {
2664 kwqe = wqes[i];
2665 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2666 work = 1;
2667
2668 switch (opcode) {
2669 case ISCSI_KWQE_OPCODE_INIT1:
2670 ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2671 break;
2672 case ISCSI_KWQE_OPCODE_INIT2:
2673 ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2674 break;
2675 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2676 ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2677 num_wqes - i, &work);
2678 break;
2679 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2680 ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2681 break;
2682 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2683 ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2684 break;
2685 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2686 ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2687 &work);
2688 break;
2689 case L4_KWQE_OPCODE_VALUE_CLOSE:
2690 ret = cnic_bnx2x_close(dev, kwqe);
2691 break;
2692 case L4_KWQE_OPCODE_VALUE_RESET:
2693 ret = cnic_bnx2x_reset(dev, kwqe);
2694 break;
2695 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2696 ret = cnic_bnx2x_offload_pg(dev, kwqe);
2697 break;
2698 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2699 ret = cnic_bnx2x_update_pg(dev, kwqe);
2700 break;
2701 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2702 ret = 0;
2703 break;
2704 default:
2705 ret = 0;
2706 netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2707 opcode);
2708 break;
2709 }
2710 if (ret < 0) {
2711 netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2712 opcode);
2713
2714
2715
2716
2717
2718 if (ret == -EIO || ret == -EAGAIN)
2719 cnic_bnx2x_kwqe_err(dev, kwqe);
2720 }
2721 i += work;
2722 }
2723 return 0;
2724}
2725
2726static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2727 struct kwqe *wqes[], u32 num_wqes)
2728{
2729 struct bnx2x *bp = netdev_priv(dev->netdev);
2730 int i, work, ret;
2731 u32 opcode;
2732 struct kwqe *kwqe;
2733
2734 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2735 return -EAGAIN;
2736
2737 if (!BNX2X_CHIP_IS_E2_PLUS(bp))
2738 return -EINVAL;
2739
2740 for (i = 0; i < num_wqes; ) {
2741 kwqe = wqes[i];
2742 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2743 work = 1;
2744
2745 switch (opcode) {
2746 case FCOE_KWQE_OPCODE_INIT1:
2747 ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2748 num_wqes - i, &work);
2749 break;
2750 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2751 ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2752 num_wqes - i, &work);
2753 break;
2754 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2755 ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2756 break;
2757 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2758 ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2759 break;
2760 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2761 ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2762 break;
2763 case FCOE_KWQE_OPCODE_DESTROY:
2764 ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2765 break;
2766 case FCOE_KWQE_OPCODE_STAT:
2767 ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2768 break;
2769 default:
2770 ret = 0;
2771 netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2772 opcode);
2773 break;
2774 }
2775 if (ret < 0) {
2776 netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2777 opcode);
2778
2779
2780
2781
2782
2783 if (ret == -EIO || ret == -EAGAIN)
2784 cnic_bnx2x_kwqe_err(dev, kwqe);
2785 }
2786 i += work;
2787 }
2788 return 0;
2789}
2790
2791static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2792 u32 num_wqes)
2793{
2794 int ret = -EINVAL;
2795 u32 layer_code;
2796
2797 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2798 return -EAGAIN;
2799
2800 if (!num_wqes)
2801 return 0;
2802
2803 layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2804 switch (layer_code) {
2805 case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2806 case KWQE_FLAGS_LAYER_MASK_L4:
2807 case KWQE_FLAGS_LAYER_MASK_L2:
2808 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2809 break;
2810
2811 case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2812 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2813 break;
2814 }
2815 return ret;
2816}
2817
2818static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2819{
2820 if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2821 return KCQE_FLAGS_LAYER_MASK_L4;
2822
2823 return opflag & KCQE_FLAGS_LAYER_MASK;
2824}
2825
2826static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2827{
2828 struct cnic_local *cp = dev->cnic_priv;
2829 int i, j, comp = 0;
2830
2831 i = 0;
2832 j = 1;
2833 while (num_cqes) {
2834 struct cnic_ulp_ops *ulp_ops;
2835 int ulp_type;
2836 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2837 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2838
2839 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2840 comp++;
2841
2842 while (j < num_cqes) {
2843 u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2844
2845 if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2846 break;
2847
2848 if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2849 comp++;
2850 j++;
2851 }
2852
2853 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2854 ulp_type = CNIC_ULP_RDMA;
2855 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2856 ulp_type = CNIC_ULP_ISCSI;
2857 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2858 ulp_type = CNIC_ULP_FCOE;
2859 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2860 ulp_type = CNIC_ULP_L4;
2861 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2862 goto end;
2863 else {
2864 netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2865 kcqe_op_flag);
2866 goto end;
2867 }
2868
2869 rcu_read_lock();
2870 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2871 if (likely(ulp_ops)) {
2872 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2873 cp->completed_kcq + i, j);
2874 }
2875 rcu_read_unlock();
2876end:
2877 num_cqes -= j;
2878 i += j;
2879 j = 1;
2880 }
2881 if (unlikely(comp))
2882 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2883}
2884
2885static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2886{
2887 struct cnic_local *cp = dev->cnic_priv;
2888 u16 i, ri, hw_prod, last;
2889 struct kcqe *kcqe;
2890 int kcqe_cnt = 0, last_cnt = 0;
2891
2892 i = ri = last = info->sw_prod_idx;
2893 ri &= MAX_KCQ_IDX;
2894 hw_prod = *info->hw_prod_idx_ptr;
2895 hw_prod = info->hw_idx(hw_prod);
2896
2897 while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2898 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2899 cp->completed_kcq[kcqe_cnt++] = kcqe;
2900 i = info->next_idx(i);
2901 ri = i & MAX_KCQ_IDX;
2902 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2903 last_cnt = kcqe_cnt;
2904 last = i;
2905 }
2906 }
2907
2908 info->sw_prod_idx = last;
2909 return last_cnt;
2910}
2911
2912static int cnic_l2_completion(struct cnic_local *cp)
2913{
2914 u16 hw_cons, sw_cons;
2915 struct cnic_uio_dev *udev = cp->udev;
2916 union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2917 (udev->l2_ring + (2 * CNIC_PAGE_SIZE));
2918 u32 cmd;
2919 int comp = 0;
2920
2921 if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2922 return 0;
2923
2924 hw_cons = *cp->rx_cons_ptr;
2925 if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2926 hw_cons++;
2927
2928 sw_cons = cp->rx_cons;
2929 while (sw_cons != hw_cons) {
2930 u8 cqe_fp_flags;
2931
2932 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2933 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2934 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2935 cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2936 cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2937 if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2938 cmd == RAMROD_CMD_ID_ETH_HALT)
2939 comp++;
2940 }
2941 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2942 }
2943 return comp;
2944}
2945
2946static void cnic_chk_pkt_rings(struct cnic_local *cp)
2947{
2948 u16 rx_cons, tx_cons;
2949 int comp = 0;
2950
2951 if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2952 return;
2953
2954 rx_cons = *cp->rx_cons_ptr;
2955 tx_cons = *cp->tx_cons_ptr;
2956 if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2957 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2958 comp = cnic_l2_completion(cp);
2959
2960 cp->tx_cons = tx_cons;
2961 cp->rx_cons = rx_cons;
2962
2963 if (cp->udev)
2964 uio_event_notify(&cp->udev->cnic_uinfo);
2965 }
2966 if (comp)
2967 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2968}
2969
2970static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2971{
2972 struct cnic_local *cp = dev->cnic_priv;
2973 u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2974 int kcqe_cnt;
2975
2976
2977 rmb();
2978 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2979
2980 while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2981
2982 service_kcqes(dev, kcqe_cnt);
2983
2984
2985 barrier();
2986 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2987
2988 rmb();
2989 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2990 }
2991
2992 CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2993
2994 cnic_chk_pkt_rings(cp);
2995
2996 return status_idx;
2997}
2998
2999static int cnic_service_bnx2(void *data, void *status_blk)
3000{
3001 struct cnic_dev *dev = data;
3002
3003 if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3004 struct status_block *sblk = status_blk;
3005
3006 return sblk->status_idx;
3007 }
3008
3009 return cnic_service_bnx2_queues(dev);
3010}
3011
3012static void cnic_service_bnx2_msix(struct tasklet_struct *t)
3013{
3014 struct cnic_local *cp = from_tasklet(cp, t, cnic_irq_task);
3015 struct cnic_dev *dev = cp->dev;
3016
3017 cp->last_status_idx = cnic_service_bnx2_queues(dev);
3018
3019 CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
3020 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
3021}
3022
3023static void cnic_doirq(struct cnic_dev *dev)
3024{
3025 struct cnic_local *cp = dev->cnic_priv;
3026
3027 if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3028 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
3029
3030 prefetch(cp->status_blk.gen);
3031 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
3032
3033 tasklet_schedule(&cp->cnic_irq_task);
3034 }
3035}
3036
3037static irqreturn_t cnic_irq(int irq, void *dev_instance)
3038{
3039 struct cnic_dev *dev = dev_instance;
3040 struct cnic_local *cp = dev->cnic_priv;
3041
3042 if (cp->ack_int)
3043 cp->ack_int(dev);
3044
3045 cnic_doirq(dev);
3046
3047 return IRQ_HANDLED;
3048}
3049
3050static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
3051 u16 index, u8 op, u8 update)
3052{
3053 struct bnx2x *bp = netdev_priv(dev->netdev);
3054 u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp) * 32 +
3055 COMMAND_REG_INT_ACK);
3056 struct igu_ack_register igu_ack;
3057
3058 igu_ack.status_block_index = index;
3059 igu_ack.sb_id_and_flags =
3060 ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
3061 (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
3062 (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
3063 (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
3064
3065 CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
3066}
3067
3068static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
3069 u16 index, u8 op, u8 update)
3070{
3071 struct igu_regular cmd_data;
3072 u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
3073
3074 cmd_data.sb_id_and_flags =
3075 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
3076 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
3077 (update << IGU_REGULAR_BUPDATE_SHIFT) |
3078 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
3079
3080
3081 CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
3082}
3083
3084static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
3085{
3086 struct cnic_local *cp = dev->cnic_priv;
3087
3088 cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3089 IGU_INT_DISABLE, 0);
3090}
3091
3092static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
3093{
3094 struct cnic_local *cp = dev->cnic_priv;
3095
3096 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
3097 IGU_INT_DISABLE, 0);
3098}
3099
3100static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
3101{
3102 struct cnic_local *cp = dev->cnic_priv;
3103
3104 cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
3105 IGU_INT_ENABLE, 1);
3106}
3107
3108static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
3109{
3110 struct cnic_local *cp = dev->cnic_priv;
3111
3112 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
3113 IGU_INT_ENABLE, 1);
3114}
3115
3116static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3117{
3118 u32 last_status = *info->status_idx_ptr;
3119 int kcqe_cnt;
3120
3121
3122 rmb();
3123 while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3124
3125 service_kcqes(dev, kcqe_cnt);
3126
3127
3128 barrier();
3129
3130 last_status = *info->status_idx_ptr;
3131
3132 rmb();
3133 }
3134 return last_status;
3135}
3136
3137static void cnic_service_bnx2x_bh(struct tasklet_struct *t)
3138{
3139 struct cnic_local *cp = from_tasklet(cp, t, cnic_irq_task);
3140 struct cnic_dev *dev = cp->dev;
3141 struct bnx2x *bp = netdev_priv(dev->netdev);
3142 u32 status_idx, new_status_idx;
3143
3144 if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
3145 return;
3146
3147 while (1) {
3148 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3149
3150 CNIC_WR16(dev, cp->kcq1.io_addr,
3151 cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
3152
3153 if (!CNIC_SUPPORTS_FCOE(bp)) {
3154 cp->arm_int(dev, status_idx);
3155 break;
3156 }
3157
3158 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
3159
3160 if (new_status_idx != status_idx)
3161 continue;
3162
3163 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
3164 MAX_KCQ_IDX);
3165
3166 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
3167 status_idx, IGU_INT_ENABLE, 1);
3168
3169 break;
3170 }
3171}
3172
3173static int cnic_service_bnx2x(void *data, void *status_blk)
3174{
3175 struct cnic_dev *dev = data;
3176 struct cnic_local *cp = dev->cnic_priv;
3177
3178 if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
3179 cnic_doirq(dev);
3180
3181 cnic_chk_pkt_rings(cp);
3182
3183 return 0;
3184}
3185
3186static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3187{
3188 struct cnic_ulp_ops *ulp_ops;
3189
3190 if (if_type == CNIC_ULP_ISCSI)
3191 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3192
3193 mutex_lock(&cnic_lock);
3194 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3195 lockdep_is_held(&cnic_lock));
3196 if (!ulp_ops) {
3197 mutex_unlock(&cnic_lock);
3198 return;
3199 }
3200 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3201 mutex_unlock(&cnic_lock);
3202
3203 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3204 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3205
3206 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3207}
3208
3209static void cnic_ulp_stop(struct cnic_dev *dev)
3210{
3211 struct cnic_local *cp = dev->cnic_priv;
3212 int if_type;
3213
3214 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3215 cnic_ulp_stop_one(cp, if_type);
3216}
3217
3218static void cnic_ulp_start(struct cnic_dev *dev)
3219{
3220 struct cnic_local *cp = dev->cnic_priv;
3221 int if_type;
3222
3223 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3224 struct cnic_ulp_ops *ulp_ops;
3225
3226 mutex_lock(&cnic_lock);
3227 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3228 lockdep_is_held(&cnic_lock));
3229 if (!ulp_ops || !ulp_ops->cnic_start) {
3230 mutex_unlock(&cnic_lock);
3231 continue;
3232 }
3233 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3234 mutex_unlock(&cnic_lock);
3235
3236 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3237 ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3238
3239 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3240 }
3241}
3242
3243static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
3244{
3245 struct cnic_local *cp = dev->cnic_priv;
3246 struct cnic_ulp_ops *ulp_ops;
3247 int rc;
3248
3249 mutex_lock(&cnic_lock);
3250 ulp_ops = rcu_dereference_protected(cp->ulp_ops[ulp_type],
3251 lockdep_is_held(&cnic_lock));
3252 if (ulp_ops && ulp_ops->cnic_get_stats)
3253 rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
3254 else
3255 rc = -ENODEV;
3256 mutex_unlock(&cnic_lock);
3257 return rc;
3258}
3259
3260static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3261{
3262 struct cnic_dev *dev = data;
3263 int ulp_type = CNIC_ULP_ISCSI;
3264
3265 switch (info->cmd) {
3266 case CNIC_CTL_STOP_CMD:
3267 cnic_hold(dev);
3268
3269 cnic_ulp_stop(dev);
3270 cnic_stop_hw(dev);
3271
3272 cnic_put(dev);
3273 break;
3274 case CNIC_CTL_START_CMD:
3275 cnic_hold(dev);
3276
3277 if (!cnic_start_hw(dev))
3278 cnic_ulp_start(dev);
3279
3280 cnic_put(dev);
3281 break;
3282 case CNIC_CTL_STOP_ISCSI_CMD: {
3283 struct cnic_local *cp = dev->cnic_priv;
3284 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3285 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3286 break;
3287 }
3288 case CNIC_CTL_COMPLETION_CMD: {
3289 struct cnic_ctl_completion *comp = &info->data.comp;
3290 u32 cid = BNX2X_SW_CID(comp->cid);
3291 u32 l5_cid;
3292 struct cnic_local *cp = dev->cnic_priv;
3293
3294 if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
3295 break;
3296
3297 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3298 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3299
3300 if (unlikely(comp->error)) {
3301 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3302 netdev_err(dev->netdev,
3303 "CID %x CFC delete comp error %x\n",
3304 cid, comp->error);
3305 }
3306
3307 ctx->wait_cond = 1;
3308 wake_up(&ctx->waitq);
3309 }
3310 break;
3311 }
3312 case CNIC_CTL_FCOE_STATS_GET_CMD:
3313 ulp_type = CNIC_ULP_FCOE;
3314 fallthrough;
3315 case CNIC_CTL_ISCSI_STATS_GET_CMD:
3316 cnic_hold(dev);
3317 cnic_copy_ulp_stats(dev, ulp_type);
3318 cnic_put(dev);
3319 break;
3320
3321 default:
3322 return -EINVAL;
3323 }
3324 return 0;
3325}
3326
3327static void cnic_ulp_init(struct cnic_dev *dev)
3328{
3329 int i;
3330 struct cnic_local *cp = dev->cnic_priv;
3331
3332 for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3333 struct cnic_ulp_ops *ulp_ops;
3334
3335 mutex_lock(&cnic_lock);
3336 ulp_ops = cnic_ulp_tbl_prot(i);
3337 if (!ulp_ops || !ulp_ops->cnic_init) {
3338 mutex_unlock(&cnic_lock);
3339 continue;
3340 }
3341 ulp_get(ulp_ops);
3342 mutex_unlock(&cnic_lock);
3343
3344 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3345 ulp_ops->cnic_init(dev);
3346
3347 ulp_put(ulp_ops);
3348 }
3349}
3350
3351static void cnic_ulp_exit(struct cnic_dev *dev)
3352{
3353 int i;
3354 struct cnic_local *cp = dev->cnic_priv;
3355
3356 for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3357 struct cnic_ulp_ops *ulp_ops;
3358
3359 mutex_lock(&cnic_lock);
3360 ulp_ops = cnic_ulp_tbl_prot(i);
3361 if (!ulp_ops || !ulp_ops->cnic_exit) {
3362 mutex_unlock(&cnic_lock);
3363 continue;
3364 }
3365 ulp_get(ulp_ops);
3366 mutex_unlock(&cnic_lock);
3367
3368 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3369 ulp_ops->cnic_exit(dev);
3370
3371 ulp_put(ulp_ops);
3372 }
3373}
3374
3375static int cnic_cm_offload_pg(struct cnic_sock *csk)
3376{
3377 struct cnic_dev *dev = csk->dev;
3378 struct l4_kwq_offload_pg *l4kwqe;
3379 struct kwqe *wqes[1];
3380
3381 l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3382 memset(l4kwqe, 0, sizeof(*l4kwqe));
3383 wqes[0] = (struct kwqe *) l4kwqe;
3384
3385 l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3386 l4kwqe->flags =
3387 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3388 l4kwqe->l2hdr_nbytes = ETH_HLEN;
3389
3390 l4kwqe->da0 = csk->ha[0];
3391 l4kwqe->da1 = csk->ha[1];
3392 l4kwqe->da2 = csk->ha[2];
3393 l4kwqe->da3 = csk->ha[3];
3394 l4kwqe->da4 = csk->ha[4];
3395 l4kwqe->da5 = csk->ha[5];
3396
3397 l4kwqe->sa0 = dev->mac_addr[0];
3398 l4kwqe->sa1 = dev->mac_addr[1];
3399 l4kwqe->sa2 = dev->mac_addr[2];
3400 l4kwqe->sa3 = dev->mac_addr[3];
3401 l4kwqe->sa4 = dev->mac_addr[4];
3402 l4kwqe->sa5 = dev->mac_addr[5];
3403
3404 l4kwqe->etype = ETH_P_IP;
3405 l4kwqe->ipid_start = DEF_IPID_START;
3406 l4kwqe->host_opaque = csk->l5_cid;
3407
3408 if (csk->vlan_id) {
3409 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3410 l4kwqe->vlan_tag = csk->vlan_id;
3411 l4kwqe->l2hdr_nbytes += 4;
3412 }
3413
3414 return dev->submit_kwqes(dev, wqes, 1);
3415}
3416
3417static int cnic_cm_update_pg(struct cnic_sock *csk)
3418{
3419 struct cnic_dev *dev = csk->dev;
3420 struct l4_kwq_update_pg *l4kwqe;
3421 struct kwqe *wqes[1];
3422
3423 l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3424 memset(l4kwqe, 0, sizeof(*l4kwqe));
3425 wqes[0] = (struct kwqe *) l4kwqe;
3426
3427 l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3428 l4kwqe->flags =
3429 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3430 l4kwqe->pg_cid = csk->pg_cid;
3431
3432 l4kwqe->da0 = csk->ha[0];
3433 l4kwqe->da1 = csk->ha[1];
3434 l4kwqe->da2 = csk->ha[2];
3435 l4kwqe->da3 = csk->ha[3];
3436 l4kwqe->da4 = csk->ha[4];
3437 l4kwqe->da5 = csk->ha[5];
3438
3439 l4kwqe->pg_host_opaque = csk->l5_cid;
3440 l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3441
3442 return dev->submit_kwqes(dev, wqes, 1);
3443}
3444
3445static int cnic_cm_upload_pg(struct cnic_sock *csk)
3446{
3447 struct cnic_dev *dev = csk->dev;
3448 struct l4_kwq_upload *l4kwqe;
3449 struct kwqe *wqes[1];
3450
3451 l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3452 memset(l4kwqe, 0, sizeof(*l4kwqe));
3453 wqes[0] = (struct kwqe *) l4kwqe;
3454
3455 l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3456 l4kwqe->flags =
3457 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3458 l4kwqe->cid = csk->pg_cid;
3459
3460 return dev->submit_kwqes(dev, wqes, 1);
3461}
3462
3463static int cnic_cm_conn_req(struct cnic_sock *csk)
3464{
3465 struct cnic_dev *dev = csk->dev;
3466 struct l4_kwq_connect_req1 *l4kwqe1;
3467 struct l4_kwq_connect_req2 *l4kwqe2;
3468 struct l4_kwq_connect_req3 *l4kwqe3;
3469 struct kwqe *wqes[3];
3470 u8 tcp_flags = 0;
3471 int num_wqes = 2;
3472
3473 l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3474 l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3475 l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3476 memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3477 memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3478 memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3479
3480 l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3481 l4kwqe3->flags =
3482 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3483 l4kwqe3->ka_timeout = csk->ka_timeout;
3484 l4kwqe3->ka_interval = csk->ka_interval;
3485 l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3486 l4kwqe3->tos = csk->tos;
3487 l4kwqe3->ttl = csk->ttl;
3488 l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3489 l4kwqe3->pmtu = csk->mtu;
3490 l4kwqe3->rcv_buf = csk->rcv_buf;
3491 l4kwqe3->snd_buf = csk->snd_buf;
3492 l4kwqe3->seed = csk->seed;
3493
3494 wqes[0] = (struct kwqe *) l4kwqe1;
3495 if (test_bit(SK_F_IPV6, &csk->flags)) {
3496 wqes[1] = (struct kwqe *) l4kwqe2;
3497 wqes[2] = (struct kwqe *) l4kwqe3;
3498 num_wqes = 3;
3499
3500 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3501 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3502 l4kwqe2->flags =
3503 L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3504 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3505 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3506 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3507 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3508 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3509 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3510 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3511 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3512 sizeof(struct tcphdr);
3513 } else {
3514 wqes[1] = (struct kwqe *) l4kwqe3;
3515 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3516 sizeof(struct tcphdr);
3517 }
3518
3519 l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3520 l4kwqe1->flags =
3521 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3522 L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3523 l4kwqe1->cid = csk->cid;
3524 l4kwqe1->pg_cid = csk->pg_cid;
3525 l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3526 l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3527 l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3528 l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3529 if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3530 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3531 if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3532 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3533 if (csk->tcp_flags & SK_TCP_NAGLE)
3534 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3535 if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3536 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3537 if (csk->tcp_flags & SK_TCP_SACK)
3538 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3539 if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3540 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3541
3542 l4kwqe1->tcp_flags = tcp_flags;
3543
3544 return dev->submit_kwqes(dev, wqes, num_wqes);
3545}
3546
3547static int cnic_cm_close_req(struct cnic_sock *csk)
3548{
3549 struct cnic_dev *dev = csk->dev;
3550 struct l4_kwq_close_req *l4kwqe;
3551 struct kwqe *wqes[1];
3552
3553 l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3554 memset(l4kwqe, 0, sizeof(*l4kwqe));
3555 wqes[0] = (struct kwqe *) l4kwqe;
3556
3557 l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3558 l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3559 l4kwqe->cid = csk->cid;
3560
3561 return dev->submit_kwqes(dev, wqes, 1);
3562}
3563
3564static int cnic_cm_abort_req(struct cnic_sock *csk)
3565{
3566 struct cnic_dev *dev = csk->dev;
3567 struct l4_kwq_reset_req *l4kwqe;
3568 struct kwqe *wqes[1];
3569
3570 l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3571 memset(l4kwqe, 0, sizeof(*l4kwqe));
3572 wqes[0] = (struct kwqe *) l4kwqe;
3573
3574 l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3575 l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3576 l4kwqe->cid = csk->cid;
3577
3578 return dev->submit_kwqes(dev, wqes, 1);
3579}
3580
3581static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3582 u32 l5_cid, struct cnic_sock **csk, void *context)
3583{
3584 struct cnic_local *cp = dev->cnic_priv;
3585 struct cnic_sock *csk1;
3586
3587 if (l5_cid >= MAX_CM_SK_TBL_SZ)
3588 return -EINVAL;
3589
3590 if (cp->ctx_tbl) {
3591 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3592
3593 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3594 return -EAGAIN;
3595 }
3596
3597 csk1 = &cp->csk_tbl[l5_cid];
3598 if (atomic_read(&csk1->ref_count))
3599 return -EAGAIN;
3600
3601 if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3602 return -EBUSY;
3603
3604 csk1->dev = dev;
3605 csk1->cid = cid;
3606 csk1->l5_cid = l5_cid;
3607 csk1->ulp_type = ulp_type;
3608 csk1->context = context;
3609
3610 csk1->ka_timeout = DEF_KA_TIMEOUT;
3611 csk1->ka_interval = DEF_KA_INTERVAL;
3612 csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3613 csk1->tos = DEF_TOS;
3614 csk1->ttl = DEF_TTL;
3615 csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3616 csk1->rcv_buf = DEF_RCV_BUF;
3617 csk1->snd_buf = DEF_SND_BUF;
3618 csk1->seed = DEF_SEED;
3619 csk1->tcp_flags = 0;
3620
3621 *csk = csk1;
3622 return 0;
3623}
3624
3625static void cnic_cm_cleanup(struct cnic_sock *csk)
3626{
3627 if (csk->src_port) {
3628 struct cnic_dev *dev = csk->dev;
3629 struct cnic_local *cp = dev->cnic_priv;
3630
3631 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3632 csk->src_port = 0;
3633 }
3634}
3635
3636static void cnic_close_conn(struct cnic_sock *csk)
3637{
3638 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3639 cnic_cm_upload_pg(csk);
3640 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3641 }
3642 cnic_cm_cleanup(csk);
3643}
3644
3645static int cnic_cm_destroy(struct cnic_sock *csk)
3646{
3647 if (!cnic_in_use(csk))
3648 return -EINVAL;
3649
3650 csk_hold(csk);
3651 clear_bit(SK_F_INUSE, &csk->flags);
3652 smp_mb__after_atomic();
3653 while (atomic_read(&csk->ref_count) != 1)
3654 msleep(1);
3655 cnic_cm_cleanup(csk);
3656
3657 csk->flags = 0;
3658 csk_put(csk);
3659 return 0;
3660}
3661
3662static inline u16 cnic_get_vlan(struct net_device *dev,
3663 struct net_device **vlan_dev)
3664{
3665 if (is_vlan_dev(dev)) {
3666 *vlan_dev = vlan_dev_real_dev(dev);
3667 return vlan_dev_vlan_id(dev);
3668 }
3669 *vlan_dev = dev;
3670 return 0;
3671}
3672
3673static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3674 struct dst_entry **dst)
3675{
3676#if defined(CONFIG_INET)
3677 struct rtable *rt;
3678
3679 rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3680 if (!IS_ERR(rt)) {
3681 *dst = &rt->dst;
3682 return 0;
3683 }
3684 return PTR_ERR(rt);
3685#else
3686 return -ENETUNREACH;
3687#endif
3688}
3689
3690static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3691 struct dst_entry **dst)
3692{
3693#if IS_ENABLED(CONFIG_IPV6)
3694 struct flowi6 fl6;
3695
3696 memset(&fl6, 0, sizeof(fl6));
3697 fl6.daddr = dst_addr->sin6_addr;
3698 if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3699 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3700
3701 *dst = ip6_route_output(&init_net, NULL, &fl6);
3702 if ((*dst)->error) {
3703 dst_release(*dst);
3704 *dst = NULL;
3705 return -ENETUNREACH;
3706 } else
3707 return 0;
3708#endif
3709
3710 return -ENETUNREACH;
3711}
3712
3713static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3714 int ulp_type)
3715{
3716 struct cnic_dev *dev = NULL;
3717 struct dst_entry *dst;
3718 struct net_device *netdev = NULL;
3719 int err = -ENETUNREACH;
3720
3721 if (dst_addr->sin_family == AF_INET)
3722 err = cnic_get_v4_route(dst_addr, &dst);
3723 else if (dst_addr->sin_family == AF_INET6) {
3724 struct sockaddr_in6 *dst_addr6 =
3725 (struct sockaddr_in6 *) dst_addr;
3726
3727 err = cnic_get_v6_route(dst_addr6, &dst);
3728 } else
3729 return NULL;
3730
3731 if (err)
3732 return NULL;
3733
3734 if (!dst->dev)
3735 goto done;
3736
3737 cnic_get_vlan(dst->dev, &netdev);
3738
3739 dev = cnic_from_netdev(netdev);
3740
3741done:
3742 dst_release(dst);
3743 if (dev)
3744 cnic_put(dev);
3745 return dev;
3746}
3747
3748static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3749{
3750 struct cnic_dev *dev = csk->dev;
3751 struct cnic_local *cp = dev->cnic_priv;
3752
3753 return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3754}
3755
3756static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3757{
3758 struct cnic_dev *dev = csk->dev;
3759 struct cnic_local *cp = dev->cnic_priv;
3760 int is_v6, rc = 0;
3761 struct dst_entry *dst = NULL;
3762 struct net_device *realdev;
3763 __be16 local_port;
3764 u32 port_id;
3765
3766 if (saddr->local.v6.sin6_family == AF_INET6 &&
3767 saddr->remote.v6.sin6_family == AF_INET6)
3768 is_v6 = 1;
3769 else if (saddr->local.v4.sin_family == AF_INET &&
3770 saddr->remote.v4.sin_family == AF_INET)
3771 is_v6 = 0;
3772 else
3773 return -EINVAL;
3774
3775 clear_bit(SK_F_IPV6, &csk->flags);
3776
3777 if (is_v6) {
3778 set_bit(SK_F_IPV6, &csk->flags);
3779 cnic_get_v6_route(&saddr->remote.v6, &dst);
3780
3781 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3782 sizeof(struct in6_addr));
3783 csk->dst_port = saddr->remote.v6.sin6_port;
3784 local_port = saddr->local.v6.sin6_port;
3785
3786 } else {
3787 cnic_get_v4_route(&saddr->remote.v4, &dst);
3788
3789 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3790 csk->dst_port = saddr->remote.v4.sin_port;
3791 local_port = saddr->local.v4.sin_port;
3792 }
3793
3794 csk->vlan_id = 0;
3795 csk->mtu = dev->netdev->mtu;
3796 if (dst && dst->dev) {
3797 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3798 if (realdev == dev->netdev) {
3799 csk->vlan_id = vlan;
3800 csk->mtu = dst_mtu(dst);
3801 }
3802 }
3803
3804 port_id = be16_to_cpu(local_port);
3805 if (port_id >= CNIC_LOCAL_PORT_MIN &&
3806 port_id < CNIC_LOCAL_PORT_MAX) {
3807 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3808 port_id = 0;
3809 } else
3810 port_id = 0;
3811
3812 if (!port_id) {
3813 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3814 if (port_id == -1) {
3815 rc = -ENOMEM;
3816 goto err_out;
3817 }
3818 local_port = cpu_to_be16(port_id);
3819 }
3820 csk->src_port = local_port;
3821
3822err_out:
3823 dst_release(dst);
3824 return rc;
3825}
3826
3827static void cnic_init_csk_state(struct cnic_sock *csk)
3828{
3829 csk->state = 0;
3830 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3831 clear_bit(SK_F_CLOSING, &
