Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[linux-2.6.git] / drivers / net / cnic.c
1 /* cnic.c: Broadcom CNIC core network driver.
2  *
3  * Copyright (c) 2006-2010 Broadcom Corporation
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation.
8  *
9  * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
10  * Modified and maintained by: Michael Chan <mchan@broadcom.com>
11  */
12
13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
14
15 #include <linux/module.h>
16
17 #include <linux/kernel.h>
18 #include <linux/errno.h>
19 #include <linux/list.h>
20 #include <linux/slab.h>
21 #include <linux/pci.h>
22 #include <linux/init.h>
23 #include <linux/netdevice.h>
24 #include <linux/uio_driver.h>
25 #include <linux/in.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/delay.h>
28 #include <linux/ethtool.h>
29 #include <linux/if_vlan.h>
30 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
31 #define BCM_VLAN 1
32 #endif
33 #include <net/ip.h>
34 #include <net/tcp.h>
35 #include <net/route.h>
36 #include <net/ipv6.h>
37 #include <net/ip6_route.h>
38 #include <net/ip6_checksum.h>
39 #include <scsi/iscsi_if.h>
40
41 #include "cnic_if.h"
42 #include "bnx2.h"
43 #include "bnx2x/bnx2x_reg.h"
44 #include "bnx2x/bnx2x_fw_defs.h"
45 #include "bnx2x/bnx2x_hsi.h"
46 #include "../scsi/bnx2i/57xx_iscsi_constants.h"
47 #include "../scsi/bnx2i/57xx_iscsi_hsi.h"
48 #include "cnic.h"
49 #include "cnic_defs.h"
50
51 #define DRV_MODULE_NAME         "cnic"
52
53 static char version[] __devinitdata =
54         "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
55
56 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
57               "Chen (zongxi@broadcom.com");
58 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
59 MODULE_LICENSE("GPL");
60 MODULE_VERSION(CNIC_MODULE_VERSION);
61
62 /* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
63 static LIST_HEAD(cnic_dev_list);
64 static LIST_HEAD(cnic_udev_list);
65 static DEFINE_RWLOCK(cnic_dev_lock);
66 static DEFINE_MUTEX(cnic_lock);
67
68 static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
69
70 /* helper function, assuming cnic_lock is held */
71 static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
72 {
73         return rcu_dereference_protected(cnic_ulp_tbl[type],
74                                          lockdep_is_held(&cnic_lock));
75 }
76
77 static int cnic_service_bnx2(void *, void *);
78 static int cnic_service_bnx2x(void *, void *);
79 static int cnic_ctl(void *, struct cnic_ctl_info *);
80
81 static struct cnic_ops cnic_bnx2_ops = {
82         .cnic_owner     = THIS_MODULE,
83         .cnic_handler   = cnic_service_bnx2,
84         .cnic_ctl       = cnic_ctl,
85 };
86
87 static struct cnic_ops cnic_bnx2x_ops = {
88         .cnic_owner     = THIS_MODULE,
89         .cnic_handler   = cnic_service_bnx2x,
90         .cnic_ctl       = cnic_ctl,
91 };
92
93 static struct workqueue_struct *cnic_wq;
94
95 static void cnic_shutdown_rings(struct cnic_dev *);
96 static void cnic_init_rings(struct cnic_dev *);
97 static int cnic_cm_set_pg(struct cnic_sock *);
98
99 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
100 {
101         struct cnic_uio_dev *udev = uinfo->priv;
102         struct cnic_dev *dev;
103
104         if (!capable(CAP_NET_ADMIN))
105                 return -EPERM;
106
107         if (udev->uio_dev != -1)
108                 return -EBUSY;
109
110         rtnl_lock();
111         dev = udev->dev;
112
113         if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
114                 rtnl_unlock();
115                 return -ENODEV;
116         }
117
118         udev->uio_dev = iminor(inode);
119
120         cnic_shutdown_rings(dev);
121         cnic_init_rings(dev);
122         rtnl_unlock();
123
124         return 0;
125 }
126
127 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
128 {
129         struct cnic_uio_dev *udev = uinfo->priv;
130
131         udev->uio_dev = -1;
132         return 0;
133 }
134
135 static inline void cnic_hold(struct cnic_dev *dev)
136 {
137         atomic_inc(&dev->ref_count);
138 }
139
140 static inline void cnic_put(struct cnic_dev *dev)
141 {
142         atomic_dec(&dev->ref_count);
143 }
144
145 static inline void csk_hold(struct cnic_sock *csk)
146 {
147         atomic_inc(&csk->ref_count);
148 }
149
150 static inline void csk_put(struct cnic_sock *csk)
151 {
152         atomic_dec(&csk->ref_count);
153 }
154
155 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
156 {
157         struct cnic_dev *cdev;
158
159         read_lock(&cnic_dev_lock);
160         list_for_each_entry(cdev, &cnic_dev_list, list) {
161                 if (netdev == cdev->netdev) {
162                         cnic_hold(cdev);
163                         read_unlock(&cnic_dev_lock);
164                         return cdev;
165                 }
166         }
167         read_unlock(&cnic_dev_lock);
168         return NULL;
169 }
170
171 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
172 {
173         atomic_inc(&ulp_ops->ref_count);
174 }
175
176 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
177 {
178         atomic_dec(&ulp_ops->ref_count);
179 }
180
181 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
182 {
183         struct cnic_local *cp = dev->cnic_priv;
184         struct cnic_eth_dev *ethdev = cp->ethdev;
185         struct drv_ctl_info info;
186         struct drv_ctl_io *io = &info.data.io;
187
188         info.cmd = DRV_CTL_CTX_WR_CMD;
189         io->cid_addr = cid_addr;
190         io->offset = off;
191         io->data = val;
192         ethdev->drv_ctl(dev->netdev, &info);
193 }
194
195 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
196 {
197         struct cnic_local *cp = dev->cnic_priv;
198         struct cnic_eth_dev *ethdev = cp->ethdev;
199         struct drv_ctl_info info;
200         struct drv_ctl_io *io = &info.data.io;
201
202         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
203         io->offset = off;
204         io->dma_addr = addr;
205         ethdev->drv_ctl(dev->netdev, &info);
206 }
207
208 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
209 {
210         struct cnic_local *cp = dev->cnic_priv;
211         struct cnic_eth_dev *ethdev = cp->ethdev;
212         struct drv_ctl_info info;
213         struct drv_ctl_l2_ring *ring = &info.data.ring;
214
215         if (start)
216                 info.cmd = DRV_CTL_START_L2_CMD;
217         else
218                 info.cmd = DRV_CTL_STOP_L2_CMD;
219
220         ring->cid = cid;
221         ring->client_id = cl_id;
222         ethdev->drv_ctl(dev->netdev, &info);
223 }
224
225 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
226 {
227         struct cnic_local *cp = dev->cnic_priv;
228         struct cnic_eth_dev *ethdev = cp->ethdev;
229         struct drv_ctl_info info;
230         struct drv_ctl_io *io = &info.data.io;
231
232         info.cmd = DRV_CTL_IO_WR_CMD;
233         io->offset = off;
234         io->data = val;
235         ethdev->drv_ctl(dev->netdev, &info);
236 }
237
238 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
239 {
240         struct cnic_local *cp = dev->cnic_priv;
241         struct cnic_eth_dev *ethdev = cp->ethdev;
242         struct drv_ctl_info info;
243         struct drv_ctl_io *io = &info.data.io;
244
245         info.cmd = DRV_CTL_IO_RD_CMD;
246         io->offset = off;
247         ethdev->drv_ctl(dev->netdev, &info);
248         return io->data;
249 }
250
251 static int cnic_in_use(struct cnic_sock *csk)
252 {
253         return test_bit(SK_F_INUSE, &csk->flags);
254 }
255
256 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
257 {
258         struct cnic_local *cp = dev->cnic_priv;
259         struct cnic_eth_dev *ethdev = cp->ethdev;
260         struct drv_ctl_info info;
261
262         info.cmd = cmd;
263         info.data.credit.credit_count = count;
264         ethdev->drv_ctl(dev->netdev, &info);
265 }
266
267 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
268 {
269         u32 i;
270
271         for (i = 0; i < cp->max_cid_space; i++) {
272                 if (cp->ctx_tbl[i].cid == cid) {
273                         *l5_cid = i;
274                         return 0;
275                 }
276         }
277         return -EINVAL;
278 }
279
280 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
281                            struct cnic_sock *csk)
282 {
283         struct iscsi_path path_req;
284         char *buf = NULL;
285         u16 len = 0;
286         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
287         struct cnic_ulp_ops *ulp_ops;
288         struct cnic_uio_dev *udev = cp->udev;
289         int rc = 0, retry = 0;
290
291         if (!udev || udev->uio_dev == -1)
292                 return -ENODEV;
293
294         if (csk) {
295                 len = sizeof(path_req);
296                 buf = (char *) &path_req;
297                 memset(&path_req, 0, len);
298
299                 msg_type = ISCSI_KEVENT_PATH_REQ;
300                 path_req.handle = (u64) csk->l5_cid;
301                 if (test_bit(SK_F_IPV6, &csk->flags)) {
302                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
303                                sizeof(struct in6_addr));
304                         path_req.ip_addr_len = 16;
305                 } else {
306                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
307                                sizeof(struct in_addr));
308                         path_req.ip_addr_len = 4;
309                 }
310                 path_req.vlan_id = csk->vlan_id;
311                 path_req.pmtu = csk->mtu;
312         }
313
314         while (retry < 3) {
315                 rc = 0;
316                 rcu_read_lock();
317                 ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
318                 if (ulp_ops)
319                         rc = ulp_ops->iscsi_nl_send_msg(
320                                 cp->ulp_handle[CNIC_ULP_ISCSI],
321                                 msg_type, buf, len);
322                 rcu_read_unlock();
323                 if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
324                         break;
325
326                 msleep(100);
327                 retry++;
328         }
329         return 0;
330 }
331
332 static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
333
334 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
335                                   char *buf, u16 len)
336 {
337         int rc = -EINVAL;
338
339         switch (msg_type) {
340         case ISCSI_UEVENT_PATH_UPDATE: {
341                 struct cnic_local *cp;
342                 u32 l5_cid;
343                 struct cnic_sock *csk;
344                 struct iscsi_path *path_resp;
345
346                 if (len < sizeof(*path_resp))
347                         break;
348
349                 path_resp = (struct iscsi_path *) buf;
350                 cp = dev->cnic_priv;
351                 l5_cid = (u32) path_resp->handle;
352                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
353                         break;
354
355                 rcu_read_lock();
356                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
357                         rc = -ENODEV;
358                         rcu_read_unlock();
359                         break;
360                 }
361                 csk = &cp->csk_tbl[l5_cid];
362                 csk_hold(csk);
363                 if (cnic_in_use(csk) &&
364                     test_bit(SK_F_CONNECT_START, &csk->flags)) {
365
366                         memcpy(csk->ha, path_resp->mac_addr, 6);
367                         if (test_bit(SK_F_IPV6, &csk->flags))
368                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
369                                        sizeof(struct in6_addr));
370                         else
371                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
372                                        sizeof(struct in_addr));
373
374                         if (is_valid_ether_addr(csk->ha)) {
375                                 cnic_cm_set_pg(csk);
376                         } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
377                                 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
378
379                                 cnic_cm_upcall(cp, csk,
380                                         L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
381                                 clear_bit(SK_F_CONNECT_START, &csk->flags);
382                         }
383                 }
384                 csk_put(csk);
385                 rcu_read_unlock();
386                 rc = 0;
387         }
388         }
389
390         return rc;
391 }
392
393 static int cnic_offld_prep(struct cnic_sock *csk)
394 {
395         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
396                 return 0;
397
398         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
399                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
400                 return 0;
401         }
402
403         return 1;
404 }
405
406 static int cnic_close_prep(struct cnic_sock *csk)
407 {
408         clear_bit(SK_F_CONNECT_START, &csk->flags);
409         smp_mb__after_clear_bit();
410
411         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
412                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
413                         msleep(1);
414
415                 return 1;
416         }
417         return 0;
418 }
419
420 static int cnic_abort_prep(struct cnic_sock *csk)
421 {
422         clear_bit(SK_F_CONNECT_START, &csk->flags);
423         smp_mb__after_clear_bit();
424
425         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
426                 msleep(1);
427
428         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
429                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
430                 return 1;
431         }
432
433         return 0;
434 }
435
436 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
437 {
438         struct cnic_dev *dev;
439
440         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
441                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
442                 return -EINVAL;
443         }
444         mutex_lock(&cnic_lock);
445         if (cnic_ulp_tbl_prot(ulp_type)) {
446                 pr_err("%s: Type %d has already been registered\n",
447                        __func__, ulp_type);
448                 mutex_unlock(&cnic_lock);
449                 return -EBUSY;
450         }
451
452         read_lock(&cnic_dev_lock);
453         list_for_each_entry(dev, &cnic_dev_list, list) {
454                 struct cnic_local *cp = dev->cnic_priv;
455
456                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
457         }
458         read_unlock(&cnic_dev_lock);
459
460         atomic_set(&ulp_ops->ref_count, 0);
461         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
462         mutex_unlock(&cnic_lock);
463
464         /* Prevent race conditions with netdev_event */
465         rtnl_lock();
466         list_for_each_entry(dev, &cnic_dev_list, list) {
467                 struct cnic_local *cp = dev->cnic_priv;
468
469                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
470                         ulp_ops->cnic_init(dev);
471         }
472         rtnl_unlock();
473
474         return 0;
475 }
476
477 int cnic_unregister_driver(int ulp_type)
478 {
479         struct cnic_dev *dev;
480         struct cnic_ulp_ops *ulp_ops;
481         int i = 0;
482
483         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
484                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
485                 return -EINVAL;
486         }
487         mutex_lock(&cnic_lock);
488         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
489         if (!ulp_ops) {
490                 pr_err("%s: Type %d has not been registered\n",
491                        __func__, ulp_type);
492                 goto out_unlock;
493         }
494         read_lock(&cnic_dev_lock);
495         list_for_each_entry(dev, &cnic_dev_list, list) {
496                 struct cnic_local *cp = dev->cnic_priv;
497
498                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
499                         pr_err("%s: Type %d still has devices registered\n",
500                                __func__, ulp_type);
501                         read_unlock(&cnic_dev_lock);
502                         goto out_unlock;
503                 }
504         }
505         read_unlock(&cnic_dev_lock);
506
507         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
508
509         mutex_unlock(&cnic_lock);
510         synchronize_rcu();
511         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
512                 msleep(100);
513                 i++;
514         }
515
516         if (atomic_read(&ulp_ops->ref_count) != 0)
517                 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
518         return 0;
519
520 out_unlock:
521         mutex_unlock(&cnic_lock);
522         return -EINVAL;
523 }
524
525 static int cnic_start_hw(struct cnic_dev *);
526 static void cnic_stop_hw(struct cnic_dev *);
527
528 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
529                                 void *ulp_ctx)
530 {
531         struct cnic_local *cp = dev->cnic_priv;
532         struct cnic_ulp_ops *ulp_ops;
533
534         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
535                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
536                 return -EINVAL;
537         }
538         mutex_lock(&cnic_lock);
539         if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
540                 pr_err("%s: Driver with type %d has not been registered\n",
541                        __func__, ulp_type);
542                 mutex_unlock(&cnic_lock);
543                 return -EAGAIN;
544         }
545         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
546                 pr_err("%s: Type %d has already been registered to this device\n",
547                        __func__, ulp_type);
548                 mutex_unlock(&cnic_lock);
549                 return -EBUSY;
550         }
551
552         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
553         cp->ulp_handle[ulp_type] = ulp_ctx;
554         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
555         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
556         cnic_hold(dev);
557
558         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
559                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
560                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
561
562         mutex_unlock(&cnic_lock);
563
564         return 0;
565
566 }
567 EXPORT_SYMBOL(cnic_register_driver);
568
569 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
570 {
571         struct cnic_local *cp = dev->cnic_priv;
572         int i = 0;
573
574         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
575                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
576                 return -EINVAL;
577         }
578         mutex_lock(&cnic_lock);
579         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
580                 rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
581                 cnic_put(dev);
582         } else {
583                 pr_err("%s: device not registered to this ulp type %d\n",
584                        __func__, ulp_type);
585                 mutex_unlock(&cnic_lock);
586                 return -EINVAL;
587         }
588         mutex_unlock(&cnic_lock);
589
590         if (ulp_type == CNIC_ULP_ISCSI)
591                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
592
593         synchronize_rcu();
594
595         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
596                i < 20) {
597                 msleep(100);
598                 i++;
599         }
600         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
601                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
602
603         return 0;
604 }
605 EXPORT_SYMBOL(cnic_unregister_driver);
606
607 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
608 {
609         id_tbl->start = start_id;
610         id_tbl->max = size;
611         id_tbl->next = 0;
612         spin_lock_init(&id_tbl->lock);
613         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
614         if (!id_tbl->table)
615                 return -ENOMEM;
616
617         return 0;
618 }
619
620 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
621 {
622         kfree(id_tbl->table);
623         id_tbl->table = NULL;
624 }
625
626 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
627 {
628         int ret = -1;
629
630         id -= id_tbl->start;
631         if (id >= id_tbl->max)
632                 return ret;
633
634         spin_lock(&id_tbl->lock);
635         if (!test_bit(id, id_tbl->table)) {
636                 set_bit(id, id_tbl->table);
637                 ret = 0;
638         }
639         spin_unlock(&id_tbl->lock);
640         return ret;
641 }
642
643 /* Returns -1 if not successful */
644 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
645 {
646         u32 id;
647
648         spin_lock(&id_tbl->lock);
649         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
650         if (id >= id_tbl->max) {
651                 id = -1;
652                 if (id_tbl->next != 0) {
653                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
654                         if (id >= id_tbl->next)
655                                 id = -1;
656                 }
657         }
658
659         if (id < id_tbl->max) {
660                 set_bit(id, id_tbl->table);
661                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
662                 id += id_tbl->start;
663         }
664
665         spin_unlock(&id_tbl->lock);
666
667         return id;
668 }
669
670 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
671 {
672         if (id == -1)
673                 return;
674
675         id -= id_tbl->start;
676         if (id >= id_tbl->max)
677                 return;
678
679         clear_bit(id, id_tbl->table);
680 }
681
682 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
683 {
684         int i;
685
686         if (!dma->pg_arr)
687                 return;
688
689         for (i = 0; i < dma->num_pages; i++) {
690                 if (dma->pg_arr[i]) {
691                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
692                                           dma->pg_arr[i], dma->pg_map_arr[i]);
693                         dma->pg_arr[i] = NULL;
694                 }
695         }
696         if (dma->pgtbl) {
697                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
698                                   dma->pgtbl, dma->pgtbl_map);
699                 dma->pgtbl = NULL;
700         }
701         kfree(dma->pg_arr);
702         dma->pg_arr = NULL;
703         dma->num_pages = 0;
704 }
705
706 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
707 {
708         int i;
709         __le32 *page_table = (__le32 *) dma->pgtbl;
710
711         for (i = 0; i < dma->num_pages; i++) {
712                 /* Each entry needs to be in big endian format. */
713                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
714                 page_table++;
715                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
716                 page_table++;
717         }
718 }
719
720 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
721 {
722         int i;
723         __le32 *page_table = (__le32 *) dma->pgtbl;
724
725         for (i = 0; i < dma->num_pages; i++) {
726                 /* Each entry needs to be in little endian format. */
727                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
728                 page_table++;
729                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
730                 page_table++;
731         }
732 }
733
734 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
735                           int pages, int use_pg_tbl)
736 {
737         int i, size;
738         struct cnic_local *cp = dev->cnic_priv;
739
740         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
741         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
742         if (dma->pg_arr == NULL)
743                 return -ENOMEM;
744
745         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
746         dma->num_pages = pages;
747
748         for (i = 0; i < pages; i++) {
749                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
750                                                     BCM_PAGE_SIZE,
751                                                     &dma->pg_map_arr[i],
752                                                     GFP_ATOMIC);
753                 if (dma->pg_arr[i] == NULL)
754                         goto error;
755         }
756         if (!use_pg_tbl)
757                 return 0;
758
759         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
760                           ~(BCM_PAGE_SIZE - 1);
761         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
762                                         &dma->pgtbl_map, GFP_ATOMIC);
763         if (dma->pgtbl == NULL)
764                 goto error;
765
766         cp->setup_pgtbl(dev, dma);
767
768         return 0;
769
770 error:
771         cnic_free_dma(dev, dma);
772         return -ENOMEM;
773 }
774
775 static void cnic_free_context(struct cnic_dev *dev)
776 {
777         struct cnic_local *cp = dev->cnic_priv;
778         int i;
779
780         for (i = 0; i < cp->ctx_blks; i++) {
781                 if (cp->ctx_arr[i].ctx) {
782                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
783                                           cp->ctx_arr[i].ctx,
784                                           cp->ctx_arr[i].mapping);
785                         cp->ctx_arr[i].ctx = NULL;
786                 }
787         }
788 }
789
790 static void __cnic_free_uio(struct cnic_uio_dev *udev)
791 {
792         uio_unregister_device(&udev->cnic_uinfo);
793
794         if (udev->l2_buf) {
795                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
796                                   udev->l2_buf, udev->l2_buf_map);
797                 udev->l2_buf = NULL;
798         }
799
800         if (udev->l2_ring) {
801                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
802                                   udev->l2_ring, udev->l2_ring_map);
803                 udev->l2_ring = NULL;
804         }
805
806         pci_dev_put(udev->pdev);
807         kfree(udev);
808 }
809
810 static void cnic_free_uio(struct cnic_uio_dev *udev)
811 {
812         if (!udev)
813                 return;
814
815         write_lock(&cnic_dev_lock);
816         list_del_init(&udev->list);
817         write_unlock(&cnic_dev_lock);
818         __cnic_free_uio(udev);
819 }
820
821 static void cnic_free_resc(struct cnic_dev *dev)
822 {
823         struct cnic_local *cp = dev->cnic_priv;
824         struct cnic_uio_dev *udev = cp->udev;
825
826         if (udev) {
827                 udev->dev = NULL;
828                 cp->udev = NULL;
829         }
830
831         cnic_free_context(dev);
832         kfree(cp->ctx_arr);
833         cp->ctx_arr = NULL;
834         cp->ctx_blks = 0;
835
836         cnic_free_dma(dev, &cp->gbl_buf_info);
837         cnic_free_dma(dev, &cp->conn_buf_info);
838         cnic_free_dma(dev, &cp->kwq_info);
839         cnic_free_dma(dev, &cp->kwq_16_data_info);
840         cnic_free_dma(dev, &cp->kcq2.dma);
841         cnic_free_dma(dev, &cp->kcq1.dma);
842         kfree(cp->iscsi_tbl);
843         cp->iscsi_tbl = NULL;
844         kfree(cp->ctx_tbl);
845         cp->ctx_tbl = NULL;
846
847         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
848         cnic_free_id_tbl(&cp->cid_tbl);
849 }
850
851 static int cnic_alloc_context(struct cnic_dev *dev)
852 {
853         struct cnic_local *cp = dev->cnic_priv;
854
855         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
856                 int i, k, arr_size;
857
858                 cp->ctx_blk_size = BCM_PAGE_SIZE;
859                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
860                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
861                            sizeof(struct cnic_ctx);
862                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
863                 if (cp->ctx_arr == NULL)
864                         return -ENOMEM;
865
866                 k = 0;
867                 for (i = 0; i < 2; i++) {
868                         u32 j, reg, off, lo, hi;
869
870                         if (i == 0)
871                                 off = BNX2_PG_CTX_MAP;
872                         else
873                                 off = BNX2_ISCSI_CTX_MAP;
874
875                         reg = cnic_reg_rd_ind(dev, off);
876                         lo = reg >> 16;
877                         hi = reg & 0xffff;
878                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
879                                 cp->ctx_arr[k].cid = j;
880                 }
881
882                 cp->ctx_blks = k;
883                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
884                         cp->ctx_blks = 0;
885                         return -ENOMEM;
886                 }
887
888                 for (i = 0; i < cp->ctx_blks; i++) {
889                         cp->ctx_arr[i].ctx =
890                                 dma_alloc_coherent(&dev->pcidev->dev,
891                                                    BCM_PAGE_SIZE,
892                                                    &cp->ctx_arr[i].mapping,
893                                                    GFP_KERNEL);
894                         if (cp->ctx_arr[i].ctx == NULL)
895                                 return -ENOMEM;
896                 }
897         }
898         return 0;
899 }
900
901 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info)
902 {
903         int err, i, is_bnx2 = 0;
904         struct kcqe **kcq;
905
906         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags))
907                 is_bnx2 = 1;
908
909         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, is_bnx2);
910         if (err)
911                 return err;
912
913         kcq = (struct kcqe **) info->dma.pg_arr;
914         info->kcq = kcq;
915
916         if (is_bnx2)
917                 return 0;
918
919         for (i = 0; i < KCQ_PAGE_CNT; i++) {
920                 struct bnx2x_bd_chain_next *next =
921                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
922                 int j = i + 1;
923
924                 if (j >= KCQ_PAGE_CNT)
925                         j = 0;
926                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
927                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
928         }
929         return 0;
930 }
931
932 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
933 {
934         struct cnic_local *cp = dev->cnic_priv;
935         struct cnic_uio_dev *udev;
936
937         read_lock(&cnic_dev_lock);
938         list_for_each_entry(udev, &cnic_udev_list, list) {
939                 if (udev->pdev == dev->pcidev) {
940                         udev->dev = dev;
941                         cp->udev = udev;
942                         read_unlock(&cnic_dev_lock);
943                         return 0;
944                 }
945         }
946         read_unlock(&cnic_dev_lock);
947
948         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
949         if (!udev)
950                 return -ENOMEM;
951
952         udev->uio_dev = -1;
953
954         udev->dev = dev;
955         udev->pdev = dev->pcidev;
956         udev->l2_ring_size = pages * BCM_PAGE_SIZE;
957         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
958                                            &udev->l2_ring_map,
959                                            GFP_KERNEL | __GFP_COMP);
960         if (!udev->l2_ring)
961                 goto err_udev;
962
963         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
964         udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
965         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
966                                           &udev->l2_buf_map,
967                                           GFP_KERNEL | __GFP_COMP);
968         if (!udev->l2_buf)
969                 goto err_dma;
970
971         write_lock(&cnic_dev_lock);
972         list_add(&udev->list, &cnic_udev_list);
973         write_unlock(&cnic_dev_lock);
974
975         pci_dev_get(udev->pdev);
976
977         cp->udev = udev;
978
979         return 0;
980  err_dma:
981         dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
982                           udev->l2_ring, udev->l2_ring_map);
983  err_udev:
984         kfree(udev);
985         return -ENOMEM;
986 }
987
988 static int cnic_init_uio(struct cnic_dev *dev)
989 {
990         struct cnic_local *cp = dev->cnic_priv;
991         struct cnic_uio_dev *udev = cp->udev;
992         struct uio_info *uinfo;
993         int ret = 0;
994
995         if (!udev)
996                 return -ENOMEM;
997
998         uinfo = &udev->cnic_uinfo;
999
1000         uinfo->mem[0].addr = dev->netdev->base_addr;
1001         uinfo->mem[0].internal_addr = dev->regview;
1002         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
1003         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1004
1005         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1006                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1007                                         PAGE_MASK;
1008                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1009                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1010                 else
1011                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1012
1013                 uinfo->name = "bnx2_cnic";
1014         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1015                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1016                         PAGE_MASK;
1017                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1018
1019                 uinfo->name = "bnx2x_cnic";
1020         }
1021
1022         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1023
1024         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1025         uinfo->mem[2].size = udev->l2_ring_size;
1026         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1027
1028         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1029         uinfo->mem[3].size = udev->l2_buf_size;
1030         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1031
1032         uinfo->version = CNIC_MODULE_VERSION;
1033         uinfo->irq = UIO_IRQ_CUSTOM;
1034
1035         uinfo->open = cnic_uio_open;
1036         uinfo->release = cnic_uio_close;
1037
1038         if (udev->uio_dev == -1) {
1039                 if (!uinfo->priv) {
1040                         uinfo->priv = udev;
1041
1042                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1043                 }
1044         } else {
1045                 cnic_init_rings(dev);
1046         }
1047
1048         return ret;
1049 }
1050
1051 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1052 {
1053         struct cnic_local *cp = dev->cnic_priv;
1054         int ret;
1055
1056         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1057         if (ret)
1058                 goto error;
1059         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1060
1061         ret = cnic_alloc_kcq(dev, &cp->kcq1);
1062         if (ret)
1063                 goto error;
1064
1065         ret = cnic_alloc_context(dev);
1066         if (ret)
1067                 goto error;
1068
1069         ret = cnic_alloc_uio_rings(dev, 2);
1070         if (ret)
1071                 goto error;
1072
1073         ret = cnic_init_uio(dev);
1074         if (ret)
1075                 goto error;
1076
1077         return 0;
1078
1079 error:
1080         cnic_free_resc(dev);
1081         return ret;
1082 }
1083
1084 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1085 {
1086         struct cnic_local *cp = dev->cnic_priv;
1087         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1088         int total_mem, blks, i;
1089
1090         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1091         blks = total_mem / ctx_blk_size;
1092         if (total_mem % ctx_blk_size)
1093                 blks++;
1094
1095         if (blks > cp->ethdev->ctx_tbl_len)
1096                 return -ENOMEM;
1097
1098         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1099         if (cp->ctx_arr == NULL)
1100                 return -ENOMEM;
1101
1102         cp->ctx_blks = blks;
1103         cp->ctx_blk_size = ctx_blk_size;
1104         if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1105                 cp->ctx_align = 0;
1106         else
1107                 cp->ctx_align = ctx_blk_size;
1108
1109         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1110
1111         for (i = 0; i < blks; i++) {
1112                 cp->ctx_arr[i].ctx =
1113                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1114                                            &cp->ctx_arr[i].mapping,
1115                                            GFP_KERNEL);
1116                 if (cp->ctx_arr[i].ctx == NULL)
1117                         return -ENOMEM;
1118
1119                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1120                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1121                                 cnic_free_context(dev);
1122                                 cp->ctx_blk_size += cp->ctx_align;
1123                                 i = -1;
1124                                 continue;
1125                         }
1126                 }
1127         }
1128         return 0;
1129 }
1130
1131 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1132 {
1133         struct cnic_local *cp = dev->cnic_priv;
1134         struct cnic_eth_dev *ethdev = cp->ethdev;
1135         u32 start_cid = ethdev->starting_cid;
1136         int i, j, n, ret, pages;
1137         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1138
1139         cp->iro_arr = ethdev->iro_arr;
1140
1141         cp->max_cid_space = MAX_ISCSI_TBL_SZ + BNX2X_FCOE_NUM_CONNECTIONS;
1142         cp->iscsi_start_cid = start_cid;
1143         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1144
1145         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
1146                 cp->max_cid_space += BNX2X_FCOE_NUM_CONNECTIONS;
1147                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1148                 if (!cp->fcoe_init_cid)
1149                         cp->fcoe_init_cid = 0x10;
1150         }
1151
1152         if (start_cid < BNX2X_ISCSI_START_CID) {
1153                 u32 delta = BNX2X_ISCSI_START_CID - start_cid;
1154
1155                 cp->iscsi_start_cid = BNX2X_ISCSI_START_CID;
1156                 cp->fcoe_start_cid += delta;
1157                 cp->max_cid_space += delta;
1158         }
1159
1160         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1161                                 GFP_KERNEL);
1162         if (!cp->iscsi_tbl)
1163                 goto error;
1164
1165         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1166                                 cp->max_cid_space, GFP_KERNEL);
1167         if (!cp->ctx_tbl)
1168                 goto error;
1169
1170         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1171                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1172                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1173         }
1174
1175         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1176                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1177
1178         pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1179                 PAGE_SIZE;
1180
1181         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1182         if (ret)
1183                 return -ENOMEM;
1184
1185         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1186         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1187                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1188
1189                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1190                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1191                                                    off;
1192
1193                 if ((i % n) == (n - 1))
1194                         j++;
1195         }
1196
1197         ret = cnic_alloc_kcq(dev, &cp->kcq1);
1198         if (ret)
1199                 goto error;
1200
1201         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
1202                 ret = cnic_alloc_kcq(dev, &cp->kcq2);
1203                 if (ret)
1204                         goto error;
1205         }
1206
1207         pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
1208                            BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
1209         ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
1210         if (ret)
1211                 goto error;
1212
1213         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1214         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1215         if (ret)
1216                 goto error;
1217
1218         ret = cnic_alloc_bnx2x_context(dev);
1219         if (ret)
1220                 goto error;
1221
1222         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1223
1224         cp->l2_rx_ring_size = 15;
1225
1226         ret = cnic_alloc_uio_rings(dev, 4);
1227         if (ret)
1228                 goto error;
1229
1230         ret = cnic_init_uio(dev);
1231         if (ret)
1232                 goto error;
1233
1234         return 0;
1235
1236 error:
1237         cnic_free_resc(dev);
1238         return -ENOMEM;
1239 }
1240
1241 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1242 {
1243         return cp->max_kwq_idx -
1244                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1245 }
1246
1247 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1248                                   u32 num_wqes)
1249 {
1250         struct cnic_local *cp = dev->cnic_priv;
1251         struct kwqe *prod_qe;
1252         u16 prod, sw_prod, i;
1253
1254         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1255                 return -EAGAIN;         /* bnx2 is down */
1256
1257         spin_lock_bh(&cp->cnic_ulp_lock);
1258         if (num_wqes > cnic_kwq_avail(cp) &&
1259             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1260                 spin_unlock_bh(&cp->cnic_ulp_lock);
1261                 return -EAGAIN;
1262         }
1263
1264         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1265
1266         prod = cp->kwq_prod_idx;
1267         sw_prod = prod & MAX_KWQ_IDX;
1268         for (i = 0; i < num_wqes; i++) {
1269                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1270                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1271                 prod++;
1272                 sw_prod = prod & MAX_KWQ_IDX;
1273         }
1274         cp->kwq_prod_idx = prod;
1275
1276         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1277
1278         spin_unlock_bh(&cp->cnic_ulp_lock);
1279         return 0;
1280 }
1281
1282 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1283                                    union l5cm_specific_data *l5_data)
1284 {
1285         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1286         dma_addr_t map;
1287
1288         map = ctx->kwqe_data_mapping;
1289         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1290         l5_data->phy_address.hi = (u64) map >> 32;
1291         return ctx->kwqe_data;
1292 }
1293
1294 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1295                                 u32 type, union l5cm_specific_data *l5_data)
1296 {
1297         struct cnic_local *cp = dev->cnic_priv;
1298         struct l5cm_spe kwqe;
1299         struct kwqe_16 *kwq[1];
1300         u16 type_16;
1301         int ret;
1302
1303         kwqe.hdr.conn_and_cmd_data =
1304                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1305                              BNX2X_HW_CID(cp, cid)));
1306
1307         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1308         type_16 |= (cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1309                    SPE_HDR_FUNCTION_ID;
1310
1311         kwqe.hdr.type = cpu_to_le16(type_16);
1312         kwqe.hdr.reserved1 = 0;
1313         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1314         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1315
1316         kwq[0] = (struct kwqe_16 *) &kwqe;
1317
1318         spin_lock_bh(&cp->cnic_ulp_lock);
1319         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1320         spin_unlock_bh(&cp->cnic_ulp_lock);
1321
1322         if (ret == 1)
1323                 return 0;
1324
1325         return -EBUSY;
1326 }
1327
1328 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1329                                    struct kcqe *cqes[], u32 num_cqes)
1330 {
1331         struct cnic_local *cp = dev->cnic_priv;
1332         struct cnic_ulp_ops *ulp_ops;
1333
1334         rcu_read_lock();
1335         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1336         if (likely(ulp_ops)) {
1337                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1338                                           cqes, num_cqes);
1339         }
1340         rcu_read_unlock();
1341 }
1342
1343 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1344 {
1345         struct cnic_local *cp = dev->cnic_priv;
1346         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1347         int hq_bds, pages;
1348         u32 pfid = cp->pfid;
1349
1350         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1351         cp->num_ccells = req1->num_ccells_per_conn;
1352         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1353                               cp->num_iscsi_tasks;
1354         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1355                         BNX2X_ISCSI_R2TQE_SIZE;
1356         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1357         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1358         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1359         cp->num_cqs = req1->num_cqs;
1360
1361         if (!dev->max_iscsi_conn)
1362                 return 0;
1363
1364         /* init Tstorm RAM */
1365         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1366                   req1->rq_num_wqes);
1367         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1368                   PAGE_SIZE);
1369         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1370                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1371         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1372                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1373                   req1->num_tasks_per_conn);
1374
1375         /* init Ustorm RAM */
1376         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1377                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1378                   req1->rq_buffer_size);
1379         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1380                   PAGE_SIZE);
1381         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1382                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1383         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1384                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1385                   req1->num_tasks_per_conn);
1386         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1387                   req1->rq_num_wqes);
1388         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1389                   req1->cq_num_wqes);
1390         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1391                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1392
1393         /* init Xstorm RAM */
1394         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1395                   PAGE_SIZE);
1396         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1397                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1398         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1399                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1400                   req1->num_tasks_per_conn);
1401         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1402                   hq_bds);
1403         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1404                   req1->num_tasks_per_conn);
1405         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1406                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1407
1408         /* init Cstorm RAM */
1409         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1410                   PAGE_SIZE);
1411         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1412                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1413         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1414                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1415                   req1->num_tasks_per_conn);
1416         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1417                   req1->cq_num_wqes);
1418         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1419                   hq_bds);
1420
1421         return 0;
1422 }
1423
1424 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1425 {
1426         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1427         struct cnic_local *cp = dev->cnic_priv;
1428         u32 pfid = cp->pfid;
1429         struct iscsi_kcqe kcqe;
1430         struct kcqe *cqes[1];
1431
1432         memset(&kcqe, 0, sizeof(kcqe));
1433         if (!dev->max_iscsi_conn) {
1434                 kcqe.completion_status =
1435                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1436                 goto done;
1437         }
1438
1439         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1440                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1441         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1442                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1443                 req2->error_bit_map[1]);
1444
1445         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1446                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1447         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1448                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1449         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1450                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1451                 req2->error_bit_map[1]);
1452
1453         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1454                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1455
1456         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1457
1458 done:
1459         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1460         cqes[0] = (struct kcqe *) &kcqe;
1461         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1462
1463         return 0;
1464 }
1465
1466 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1467 {
1468         struct cnic_local *cp = dev->cnic_priv;
1469         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1470
1471         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1472                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1473
1474                 cnic_free_dma(dev, &iscsi->hq_info);
1475                 cnic_free_dma(dev, &iscsi->r2tq_info);
1476                 cnic_free_dma(dev, &iscsi->task_array_info);
1477                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1478         } else {
1479                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1480         }
1481
1482         ctx->cid = 0;
1483 }
1484
1485 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1486 {
1487         u32 cid;
1488         int ret, pages;
1489         struct cnic_local *cp = dev->cnic_priv;
1490         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1491         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1492
1493         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1494                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1495                 if (cid == -1) {
1496                         ret = -ENOMEM;
1497                         goto error;
1498                 }
1499                 ctx->cid = cid;
1500                 return 0;
1501         }
1502
1503         cid = cnic_alloc_new_id(&cp->cid_tbl);
1504         if (cid == -1) {
1505                 ret = -ENOMEM;
1506                 goto error;
1507         }
1508
1509         ctx->cid = cid;
1510         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1511
1512         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1513         if (ret)
1514                 goto error;
1515
1516         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1517         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1518         if (ret)
1519                 goto error;
1520
1521         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1522         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1523         if (ret)
1524                 goto error;
1525
1526         return 0;
1527
1528 error:
1529         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1530         return ret;
1531 }
1532
1533 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1534                                 struct regpair *ctx_addr)
1535 {
1536         struct cnic_local *cp = dev->cnic_priv;
1537         struct cnic_eth_dev *ethdev = cp->ethdev;
1538         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1539         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1540         unsigned long align_off = 0;
1541         dma_addr_t ctx_map;
1542         void *ctx;
1543
1544         if (cp->ctx_align) {
1545                 unsigned long mask = cp->ctx_align - 1;
1546
1547                 if (cp->ctx_arr[blk].mapping & mask)
1548                         align_off = cp->ctx_align -
1549                                     (cp->ctx_arr[blk].mapping & mask);
1550         }
1551         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1552                 (off * BNX2X_CONTEXT_MEM_SIZE);
1553         ctx = cp->ctx_arr[blk].ctx + align_off +
1554               (off * BNX2X_CONTEXT_MEM_SIZE);
1555         if (init)
1556                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1557
1558         ctx_addr->lo = ctx_map & 0xffffffff;
1559         ctx_addr->hi = (u64) ctx_map >> 32;
1560         return ctx;
1561 }
1562
1563 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1564                                 u32 num)
1565 {
1566         struct cnic_local *cp = dev->cnic_priv;
1567         struct iscsi_kwqe_conn_offload1 *req1 =
1568                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1569         struct iscsi_kwqe_conn_offload2 *req2 =
1570                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1571         struct iscsi_kwqe_conn_offload3 *req3;
1572         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1573         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1574         u32 cid = ctx->cid;
1575         u32 hw_cid = BNX2X_HW_CID(cp, cid);
1576         struct iscsi_context *ictx;
1577         struct regpair context_addr;
1578         int i, j, n = 2, n_max;
1579
1580         ctx->ctx_flags = 0;
1581         if (!req2->num_additional_wqes)
1582                 return -EINVAL;
1583
1584         n_max = req2->num_additional_wqes + 2;
1585
1586         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1587         if (ictx == NULL)
1588                 return -ENOMEM;
1589
1590         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1591
1592         ictx->xstorm_ag_context.hq_prod = 1;
1593
1594         ictx->xstorm_st_context.iscsi.first_burst_length =
1595                 ISCSI_DEF_FIRST_BURST_LEN;
1596         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1597                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1598         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1599                 req1->sq_page_table_addr_lo;
1600         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1601                 req1->sq_page_table_addr_hi;
1602         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1603         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1604         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1605                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1606         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1607                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1608         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1609                 iscsi->hq_info.pgtbl[0];
1610         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1611                 iscsi->hq_info.pgtbl[1];
1612         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1613                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1614         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1615                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1616         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1617                 iscsi->r2tq_info.pgtbl[0];
1618         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1619                 iscsi->r2tq_info.pgtbl[1];
1620         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1621                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1622         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1623                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1624         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1625                 BNX2X_ISCSI_PBL_NOT_CACHED;
1626         ictx->xstorm_st_context.iscsi.flags.flags |=
1627                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1628         ictx->xstorm_st_context.iscsi.flags.flags |=
1629                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1630
1631         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1632         /* TSTORM requires the base address of RQ DB & not PTE */
1633         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1634                 req2->rq_page_table_addr_lo & PAGE_MASK;
1635         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1636                 req2->rq_page_table_addr_hi;
1637         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1638         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1639         ictx->tstorm_st_context.tcp.flags2 |=
1640                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1641         ictx->tstorm_st_context.tcp.ooo_support_mode =
1642                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1643
1644         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1645
1646         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1647                 req2->rq_page_table_addr_lo;
1648         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1649                 req2->rq_page_table_addr_hi;
1650         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1651         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1652         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1653                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1654         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1655                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1656         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1657                 iscsi->r2tq_info.pgtbl[0];
1658         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1659                 iscsi->r2tq_info.pgtbl[1];
1660         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1661                 req1->cq_page_table_addr_lo;
1662         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1663                 req1->cq_page_table_addr_hi;
1664         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1665         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1666         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1667         ictx->ustorm_st_context.task_pbe_cache_index =
1668                 BNX2X_ISCSI_PBL_NOT_CACHED;
1669         ictx->ustorm_st_context.task_pdu_cache_index =
1670                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1671
1672         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1673                 if (j == 3) {
1674                         if (n >= n_max)
1675                                 break;
1676                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1677                         j = 0;
1678                 }
1679                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1680                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1681                         req3->qp_first_pte[j].hi;
1682                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1683                         req3->qp_first_pte[j].lo;
1684         }
1685
1686         ictx->ustorm_st_context.task_pbl_base.lo =
1687                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1688         ictx->ustorm_st_context.task_pbl_base.hi =
1689                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1690         ictx->ustorm_st_context.tce_phy_addr.lo =
1691                 iscsi->task_array_info.pgtbl[0];
1692         ictx->ustorm_st_context.tce_phy_addr.hi =
1693                 iscsi->task_array_info.pgtbl[1];
1694         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1695         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1696         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1697         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1698                 ISCSI_DEF_MAX_BURST_LEN;
1699         ictx->ustorm_st_context.negotiated_rx |=
1700                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1701                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1702
1703         ictx->cstorm_st_context.hq_pbl_base.lo =
1704                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1705         ictx->cstorm_st_context.hq_pbl_base.hi =
1706                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1707         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1708         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1709         ictx->cstorm_st_context.task_pbl_base.lo =
1710                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1711         ictx->cstorm_st_context.task_pbl_base.hi =
1712                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1713         /* CSTORM and USTORM initialization is different, CSTORM requires
1714          * CQ DB base & not PTE addr */
1715         ictx->cstorm_st_context.cq_db_base.lo =
1716                 req1->cq_page_table_addr_lo & PAGE_MASK;
1717         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1718         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1719         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1720         for (i = 0; i < cp->num_cqs; i++) {
1721                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1722                         ISCSI_INITIAL_SN;
1723                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1724                         ISCSI_INITIAL_SN;
1725         }
1726
1727         ictx->xstorm_ag_context.cdu_reserved =
1728                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1729                                        ISCSI_CONNECTION_TYPE);
1730         ictx->ustorm_ag_context.cdu_usage =
1731                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1732                                        ISCSI_CONNECTION_TYPE);
1733         return 0;
1734
1735 }
1736
1737 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1738                                    u32 num, int *work)
1739 {
1740         struct iscsi_kwqe_conn_offload1 *req1;
1741         struct iscsi_kwqe_conn_offload2 *req2;
1742         struct cnic_local *cp = dev->cnic_priv;
1743         struct cnic_context *ctx;
1744         struct iscsi_kcqe kcqe;
1745         struct kcqe *cqes[1];
1746         u32 l5_cid;
1747         int ret = 0;
1748
1749         if (num < 2) {
1750                 *work = num;
1751                 return -EINVAL;
1752         }
1753
1754         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1755         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1756         if ((num - 2) < req2->num_additional_wqes) {
1757                 *work = num;
1758                 return -EINVAL;
1759         }
1760         *work = 2 + req2->num_additional_wqes;
1761
1762         l5_cid = req1->iscsi_conn_id;
1763         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1764                 return -EINVAL;
1765
1766         memset(&kcqe, 0, sizeof(kcqe));
1767         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1768         kcqe.iscsi_conn_id = l5_cid;
1769         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1770
1771         ctx = &cp->ctx_tbl[l5_cid];
1772         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1773                 kcqe.completion_status =
1774                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1775                 goto done;
1776         }
1777
1778         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1779                 atomic_dec(&cp->iscsi_conn);
1780                 goto done;
1781         }
1782         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1783         if (ret) {
1784                 atomic_dec(&cp->iscsi_conn);
1785                 ret = 0;
1786                 goto done;
1787         }
1788         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1789         if (ret < 0) {
1790                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1791                 atomic_dec(&cp->iscsi_conn);
1792                 goto done;
1793         }
1794
1795         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1796         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1797
1798 done:
1799         cqes[0] = (struct kcqe *) &kcqe;
1800         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1801         return ret;
1802 }
1803
1804
1805 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1806 {
1807         struct cnic_local *cp = dev->cnic_priv;
1808         struct iscsi_kwqe_conn_update *req =
1809                 (struct iscsi_kwqe_conn_update *) kwqe;
1810         void *data;
1811         union l5cm_specific_data l5_data;
1812         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1813         int ret;
1814
1815         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1816                 return -EINVAL;
1817
1818         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1819         if (!data)
1820                 return -ENOMEM;
1821
1822         memcpy(data, kwqe, sizeof(struct kwqe));
1823
1824         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1825                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1826         return ret;
1827 }
1828
1829 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1830 {
1831         struct cnic_local *cp = dev->cnic_priv;
1832         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1833         union l5cm_specific_data l5_data;
1834         int ret;
1835         u32 hw_cid;
1836
1837         init_waitqueue_head(&ctx->waitq);
1838         ctx->wait_cond = 0;
1839         memset(&l5_data, 0, sizeof(l5_data));
1840         hw_cid = BNX2X_HW_CID(cp, ctx->cid);
1841
1842         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1843                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1844
1845         if (ret == 0)
1846                 wait_event(ctx->waitq, ctx->wait_cond);
1847
1848         return ret;
1849 }
1850
1851 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1852 {
1853         struct cnic_local *cp = dev->cnic_priv;
1854         struct iscsi_kwqe_conn_destroy *req =
1855                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1856         u32 l5_cid = req->reserved0;
1857         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1858         int ret = 0;
1859         struct iscsi_kcqe kcqe;
1860         struct kcqe *cqes[1];
1861
1862         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1863                 goto skip_cfc_delete;
1864
1865         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
1866                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
1867
1868                 if (delta > (2 * HZ))
1869                         delta = 0;
1870
1871                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
1872                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
1873                 goto destroy_reply;
1874         }
1875
1876         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
1877
1878 skip_cfc_delete:
1879         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1880
1881         atomic_dec(&cp->iscsi_conn);
1882         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1883
1884 destroy_reply:
1885         memset(&kcqe, 0, sizeof(kcqe));
1886         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1887         kcqe.iscsi_conn_id = l5_cid;
1888         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1889         kcqe.iscsi_conn_context_id = req->context_id;
1890
1891         cqes[0] = (struct kcqe *) &kcqe;
1892         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1893
1894         return ret;
1895 }
1896
1897 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1898                                       struct l4_kwq_connect_req1 *kwqe1,
1899                                       struct l4_kwq_connect_req3 *kwqe3,
1900                                       struct l5cm_active_conn_buffer *conn_buf)
1901 {
1902         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1903         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1904                 &conn_buf->xstorm_conn_buffer;
1905         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1906                 &conn_buf->tstorm_conn_buffer;
1907         struct regpair context_addr;
1908         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1909         struct in6_addr src_ip, dst_ip;
1910         int i;
1911         u32 *addrp;
1912
1913         addrp = (u32 *) &conn_addr->local_ip_addr;
1914         for (i = 0; i < 4; i++, addrp++)
1915                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1916
1917         addrp = (u32 *) &conn_addr->remote_ip_addr;
1918         for (i = 0; i < 4; i++, addrp++)
1919                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1920
1921         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1922
1923         xstorm_buf->context_addr.hi = context_addr.hi;
1924         xstorm_buf->context_addr.lo = context_addr.lo;
1925         xstorm_buf->mss = 0xffff;
1926         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1927         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1928                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1929         xstorm_buf->pseudo_header_checksum =
1930                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1931
1932         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1933                 tstorm_buf->params |=
1934                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1935         if (kwqe3->ka_timeout) {
1936                 tstorm_buf->ka_enable = 1;
1937                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1938                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1939                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1940         }
1941         tstorm_buf->rcv_buf = kwqe3->rcv_buf;
1942         tstorm_buf->snd_buf = kwqe3->snd_buf;
1943         tstorm_buf->max_rt_time = 0xffffffff;
1944 }
1945
1946 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1947 {
1948         struct cnic_local *cp = dev->cnic_priv;
1949         u32 pfid = cp->pfid;
1950         u8 *mac = dev->mac_addr;
1951
1952         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1953                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
1954         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1955                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
1956         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1957                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
1958         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1959                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
1960         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1961                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
1962         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1963                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
1964
1965         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1966                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
1967         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1968                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1969                  mac[4]);
1970         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1971                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
1972         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1973                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1974                  mac[2]);
1975         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1976                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 2,
1977                  mac[1]);
1978         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1979                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 3,
1980                  mac[0]);
1981 }
1982
1983 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
1984 {
1985         struct cnic_local *cp = dev->cnic_priv;
1986         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
1987         u16 tstorm_flags = 0;
1988
1989         if (tcp_ts) {
1990                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1991                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
1992         }
1993
1994         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1995                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
1996
1997         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1998                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
1999 }
2000
2001 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2002                               u32 num, int *work)
2003 {
2004         struct cnic_local *cp = dev->cnic_priv;
2005         struct l4_kwq_connect_req1 *kwqe1 =
2006                 (struct l4_kwq_connect_req1 *) wqes[0];
2007         struct l4_kwq_connect_req3 *kwqe3;
2008         struct l5cm_active_conn_buffer *conn_buf;
2009         struct l5cm_conn_addr_params *conn_addr;
2010         union l5cm_specific_data l5_data;
2011         u32 l5_cid = kwqe1->pg_cid;
2012         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2013         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2014         int ret;
2015
2016         if (num < 2) {
2017                 *work = num;
2018                 return -EINVAL;
2019         }
2020
2021         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2022                 *work = 3;
2023         else
2024                 *work = 2;
2025
2026         if (num < *work) {
2027                 *work = num;
2028                 return -EINVAL;
2029         }
2030
2031         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2032                 netdev_err(dev->netdev, "conn_buf size too big\n");
2033                 return -ENOMEM;
2034         }
2035         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2036         if (!conn_buf)
2037                 return -ENOMEM;
2038
2039         memset(conn_buf, 0, sizeof(*conn_buf));
2040
2041         conn_addr = &conn_buf->conn_addr_buf;
2042         conn_addr->remote_addr_0 = csk->ha[0];
2043         conn_addr->remote_addr_1 = csk->ha[1];
2044         conn_addr->remote_addr_2 = csk->ha[2];
2045         conn_addr->remote_addr_3 = csk->ha[3];
2046         conn_addr->remote_addr_4 = csk->ha[4];
2047         conn_addr->remote_addr_5 = csk->ha[5];
2048
2049         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2050                 struct l4_kwq_connect_req2 *kwqe2 =
2051                         (struct l4_kwq_connect_req2 *) wqes[1];
2052
2053                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2054                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2055                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2056
2057                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2058                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2059                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2060                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2061         }
2062         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2063
2064         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2065         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2066         conn_addr->local_tcp_port = kwqe1->src_port;
2067         conn_addr->remote_tcp_port = kwqe1->dst_port;
2068
2069         conn_addr->pmtu = kwqe3->pmtu;
2070         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2071
2072         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2073                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2074
2075         cnic_bnx2x_set_tcp_timestamp(dev,
2076                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
2077
2078         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2079                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2080         if (!ret)
2081                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2082
2083         return ret;
2084 }
2085
2086 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2087 {
2088         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2089         union l5cm_specific_data l5_data;
2090         int ret;
2091
2092         memset(&l5_data, 0, sizeof(l5_data));
2093         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2094                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2095         return ret;
2096 }
2097
2098 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2099 {
2100         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2101         union l5cm_specific_data l5_data;
2102         int ret;
2103
2104         memset(&l5_data, 0, sizeof(l5_data));
2105         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2106                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2107         return ret;
2108 }
2109 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2110 {
2111         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2112         struct l4_kcq kcqe;
2113         struct kcqe *cqes[1];
2114
2115         memset(&kcqe, 0, sizeof(kcqe));
2116         kcqe.pg_host_opaque = req->host_opaque;
2117         kcqe.pg_cid = req->host_opaque;
2118         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2119         cqes[0] = (struct kcqe *) &kcqe;
2120         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2121         return 0;
2122 }
2123
2124 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2125 {
2126         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2127         struct l4_kcq kcqe;
2128         struct kcqe *cqes[1];
2129
2130         memset(&kcqe, 0, sizeof(kcqe));
2131         kcqe.pg_host_opaque = req->pg_host_opaque;
2132         kcqe.pg_cid = req->pg_cid;
2133         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2134         cqes[0] = (struct kcqe *) &kcqe;
2135         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2136         return 0;
2137 }
2138
2139 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2140 {
2141         struct fcoe_kwqe_stat *req;
2142         struct fcoe_stat_ramrod_params *fcoe_stat;
2143         union l5cm_specific_data l5_data;
2144         struct cnic_local *cp = dev->cnic_priv;
2145         int ret;
2146         u32 cid;
2147
2148         req = (struct fcoe_kwqe_stat *) kwqe;
2149         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2150
2151         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2152         if (!fcoe_stat)
2153                 return -ENOMEM;
2154
2155         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2156         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2157
2158         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT, cid,
2159                                   FCOE_CONNECTION_TYPE, &l5_data);
2160         return ret;
2161 }
2162
2163 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2164                                  u32 num, int *work)
2165 {
2166         int ret;
2167         struct cnic_local *cp = dev->cnic_priv;
2168         u32 cid;
2169         struct fcoe_init_ramrod_params *fcoe_init;
2170         struct fcoe_kwqe_init1 *req1;
2171         struct fcoe_kwqe_init2 *req2;
2172         struct fcoe_kwqe_init3 *req3;
2173         union l5cm_specific_data l5_data;
2174
2175         if (num < 3) {
2176                 *work = num;
2177                 return -EINVAL;
2178         }
2179         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2180         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2181         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2182         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2183                 *work = 1;
2184                 return -EINVAL;
2185         }
2186         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2187                 *work = 2;
2188                 return -EINVAL;
2189         }
2190
2191         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2192                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2193                 return -ENOMEM;
2194         }
2195         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2196         if (!fcoe_init)
2197                 return -ENOMEM;
2198
2199         memset(fcoe_init, 0, sizeof(*fcoe_init));
2200         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2201         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2202         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2203         fcoe_init->eq_addr.lo = cp->kcq2.dma.pg_map_arr[0] & 0xffffffff;
2204         fcoe_init->eq_addr.hi = (u64) cp->kcq2.dma.pg_map_arr[0] >> 32;
2205         fcoe_init->eq_next_page_addr.lo =
2206                 cp->kcq2.dma.pg_map_arr[1] & 0xffffffff;
2207         fcoe_init->eq_next_page_addr.hi =
2208                 (u64) cp->kcq2.dma.pg_map_arr[1] >> 32;
2209
2210         fcoe_init->sb_num = cp->status_blk_num;
2211         fcoe_init->eq_prod = MAX_KCQ_IDX;
2212         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2213         cp->kcq2.sw_prod_idx = 0;
2214
2215         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2216         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT, cid,
2217                                   FCOE_CONNECTION_TYPE, &l5_data);
2218         *work = 3;
2219         return ret;
2220 }
2221
2222 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2223                                  u32 num, int *work)
2224 {
2225         int ret = 0;
2226         u32 cid = -1, l5_cid;
2227         struct cnic_local *cp = dev->cnic_priv;
2228         struct fcoe_kwqe_conn_offload1 *req1;
2229         struct fcoe_kwqe_conn_offload2 *req2;
2230         struct fcoe_kwqe_conn_offload3 *req3;
2231         struct fcoe_kwqe_conn_offload4 *req4;
2232         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2233         struct cnic_context *ctx;
2234         struct fcoe_context *fctx;
2235         struct regpair ctx_addr;
2236         union l5cm_specific_data l5_data;
2237         struct fcoe_kcqe kcqe;
2238         struct kcqe *cqes[1];
2239
2240         if (num < 4) {
2241                 *work = num;
2242                 return -EINVAL;
2243         }
2244         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2245         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2246         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2247         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2248
2249         *work = 4;
2250
2251         l5_cid = req1->fcoe_conn_id;
2252         if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2253                 goto err_reply;
2254
2255         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2256
2257         ctx = &cp->ctx_tbl[l5_cid];
2258         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2259                 goto err_reply;
2260
2261         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2262         if (ret) {
2263                 ret = 0;
2264                 goto err_reply;
2265         }
2266         cid = ctx->cid;
2267
2268         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2269         if (fctx) {
2270                 u32 hw_cid = BNX2X_HW_CID(cp, cid);
2271                 u32 val;
2272
2273                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2274                                              FCOE_CONNECTION_TYPE);
2275                 fctx->xstorm_ag_context.cdu_reserved = val;
2276                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2277                                              FCOE_CONNECTION_TYPE);
2278                 fctx->ustorm_ag_context.cdu_usage = val;
2279         }
2280         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2281                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2282                 goto err_reply;
2283         }
2284         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2285         if (!fcoe_offload)
2286                 goto err_reply;
2287
2288         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2289         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2290         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2291         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2292         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2293
2294         cid = BNX2X_HW_CID(cp, cid);
2295         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2296                                   FCOE_CONNECTION_TYPE, &l5_data);
2297         if (!ret)
2298                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2299
2300         return ret;
2301
2302 err_reply:
2303         if (cid != -1)
2304                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2305
2306         memset(&kcqe, 0, sizeof(kcqe));
2307         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2308         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2309         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2310
2311         cqes[0] = (struct kcqe *) &kcqe;
2312         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2313         return ret;
2314 }
2315
2316 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2317 {
2318         struct fcoe_kwqe_conn_enable_disable *req;
2319         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2320         union l5cm_specific_data l5_data;
2321         int ret;
2322         u32 cid, l5_cid;
2323         struct cnic_local *cp = dev->cnic_priv;
2324
2325         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2326         cid = req->context_id;
2327         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2328
2329         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2330                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2331                 return -ENOMEM;
2332         }
2333         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2334         if (!fcoe_enable)
2335                 return -ENOMEM;
2336
2337         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2338         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2339         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2340                                   FCOE_CONNECTION_TYPE, &l5_data);
2341         return ret;
2342 }
2343
2344 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2345 {
2346         struct fcoe_kwqe_conn_enable_disable *req;
2347         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2348         union l5cm_specific_data l5_data;
2349         int ret;
2350         u32 cid, l5_cid;
2351         struct cnic_local *cp = dev->cnic_priv;
2352
2353         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2354         cid = req->context_id;
2355         l5_cid = req->conn_id;
2356         if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2357                 return -EINVAL;
2358
2359         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2360
2361         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2362                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2363                 return -ENOMEM;
2364         }
2365         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2366         if (!fcoe_disable)
2367                 return -ENOMEM;
2368
2369         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2370         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2371         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2372                                   FCOE_CONNECTION_TYPE, &l5_data);
2373         return ret;
2374 }
2375
2376 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2377 {
2378         struct fcoe_kwqe_conn_destroy *req;
2379         union l5cm_specific_data l5_data;
2380         int ret;
2381         u32 cid, l5_cid;
2382         struct cnic_local *cp = dev->cnic_priv;
2383         struct cnic_context *ctx;
2384         struct fcoe_kcqe kcqe;
2385         struct kcqe *cqes[1];
2386
2387         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2388         cid = req->context_id;
2389         l5_cid = req->conn_id;
2390         if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2391                 return -EINVAL;
2392
2393         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2394
2395         ctx = &cp->ctx_tbl[l5_cid];
2396
2397         init_waitqueue_head(&ctx->waitq);
2398         ctx->wait_cond = 0;
2399
2400         memset(&l5_data, 0, sizeof(l5_data));
2401         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2402                                   FCOE_CONNECTION_TYPE, &l5_data);
2403         if (ret == 0) {
2404                 wait_event(ctx->waitq, ctx->wait_cond);
2405                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2406                 queue_delayed_work(cnic_wq, &cp->delete_task,
2407                                    msecs_to_jiffies(2000));
2408         }
2409
2410         memset(&kcqe, 0, sizeof(kcqe));
2411         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2412         kcqe.fcoe_conn_id = req->conn_id;
2413         kcqe.fcoe_conn_context_id = cid;
2414
2415         cqes[0] = (struct kcqe *) &kcqe;
2416         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2417         return ret;
2418 }
2419
2420 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2421 {
2422         struct fcoe_kwqe_destroy *req;
2423         union l5cm_specific_data l5_data;
2424         struct cnic_local *cp = dev->cnic_priv;
2425         int ret;
2426         u32 cid;
2427
2428         req = (struct fcoe_kwqe_destroy *) kwqe;
2429         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2430
2431         memset(&l5_data, 0, sizeof(l5_data));
2432         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY, cid,
2433                                   FCOE_CONNECTION_TYPE, &l5_data);
2434         return ret;
2435 }
2436
2437 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2438                                          struct kwqe *wqes[], u32 num_wqes)
2439 {
2440         int i, work, ret;
2441         u32 opcode;
2442         struct kwqe *kwqe;
2443
2444         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2445                 return -EAGAIN;         /* bnx2 is down */
2446
2447         for (i = 0; i < num_wqes; ) {
2448                 kwqe = wqes[i];
2449                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2450                 work = 1;
2451
2452                 switch (opcode) {
2453                 case ISCSI_KWQE_OPCODE_INIT1:
2454                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2455                         break;
2456                 case ISCSI_KWQE_OPCODE_INIT2:
2457                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2458                         break;
2459                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2460                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2461                                                      num_wqes - i, &work);
2462                         break;
2463                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2464                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2465                         break;
2466                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2467                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2468                         break;
2469                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2470                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2471                                                  &work);
2472                         break;
2473                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2474                         ret = cnic_bnx2x_close(dev, kwqe);
2475                         break;
2476                 case L4_KWQE_OPCODE_VALUE_RESET:
2477                         ret = cnic_bnx2x_reset(dev, kwqe);
2478                         break;
2479                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2480                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2481                         break;
2482                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2483                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2484                         break;
2485                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2486                         ret = 0;
2487                         break;
2488                 default:
2489                         ret = 0;
2490                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2491                                    opcode);
2492                         break;
2493                 }
2494                 if (ret < 0)
2495                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2496                                    opcode);
2497                 i += work;
2498         }
2499         return 0;
2500 }
2501
2502 static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
2503                                         struct kwqe *wqes[], u32 num_wqes)
2504 {
2505         struct cnic_local *cp = dev->cnic_priv;
2506         int i, work, ret;
2507         u32 opcode;
2508         struct kwqe *kwqe;
2509
2510         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2511                 return -EAGAIN;         /* bnx2 is down */
2512
2513         if (BNX2X_CHIP_NUM(cp->chip_id) == BNX2X_CHIP_NUM_57710)
2514                 return -EINVAL;
2515
2516         for (i = 0; i < num_wqes; ) {
2517                 kwqe = wqes[i];
2518                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2519                 work = 1;
2520
2521                 switch (opcode) {
2522                 case FCOE_KWQE_OPCODE_INIT1:
2523                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2524                                                     num_wqes - i, &work);
2525                         break;
2526                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2527                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2528                                                     num_wqes - i, &work);
2529                         break;
2530                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2531                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2532                         break;
2533                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2534                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2535                         break;
2536                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2537                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2538                         break;
2539                 case FCOE_KWQE_OPCODE_DESTROY:
2540                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2541                         break;
2542                 case FCOE_KWQE_OPCODE_STAT:
2543                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2544                         break;
2545                 default:
2546                         ret = 0;
2547                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2548                                    opcode);
2549                         break;
2550                 }
2551                 if (ret < 0)
2552                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2553                                    opcode);
2554                 i += work;
2555         }
2556         return 0;
2557 }
2558
2559 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2560                                    u32 num_wqes)
2561 {
2562         int ret = -EINVAL;
2563         u32 layer_code;
2564
2565         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2566                 return -EAGAIN;         /* bnx2x is down */
2567
2568         if (!num_wqes)
2569                 return 0;
2570
2571         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2572         switch (layer_code) {
2573         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2574         case KWQE_FLAGS_LAYER_MASK_L4:
2575         case KWQE_FLAGS_LAYER_MASK_L2:
2576                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2577                 break;
2578
2579         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2580                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2581                 break;
2582         }
2583         return ret;
2584 }
2585
2586 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2587 {
2588         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2589                 return KCQE_FLAGS_LAYER_MASK_L4;
2590
2591         return opflag & KCQE_FLAGS_LAYER_MASK;
2592 }
2593
2594 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2595 {
2596         struct cnic_local *cp = dev->cnic_priv;
2597         int i, j, comp = 0;
2598
2599         i = 0;
2600         j = 1;
2601         while (num_cqes) {
2602                 struct cnic_ulp_ops *ulp_ops;
2603                 int ulp_type;
2604                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2605                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2606
2607                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2608                         comp++;
2609
2610                 while (j < num_cqes) {
2611                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2612
2613                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2614                                 break;
2615
2616                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2617                                 comp++;
2618                         j++;
2619                 }
2620
2621                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2622                         ulp_type = CNIC_ULP_RDMA;
2623                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2624                         ulp_type = CNIC_ULP_ISCSI;
2625                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2626                         ulp_type = CNIC_ULP_FCOE;
2627                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2628                         ulp_type = CNIC_ULP_L4;
2629                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2630                         goto end;
2631                 else {
2632                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2633                                    kcqe_op_flag);
2634                         goto end;
2635                 }
2636
2637                 rcu_read_lock();
2638                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2639                 if (likely(ulp_ops)) {
2640                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2641                                                   cp->completed_kcq + i, j);
2642                 }
2643                 rcu_read_unlock();
2644 end:
2645                 num_cqes -= j;
2646                 i += j;
2647                 j = 1;
2648         }
2649         if (unlikely(comp))
2650                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2651 }
2652
2653 static u16 cnic_bnx2_next_idx(u16 idx)
2654 {
2655         return idx + 1;
2656 }
2657
2658 static u16 cnic_bnx2_hw_idx(u16 idx)
2659 {
2660         return idx;
2661 }
2662
2663 static u16 cnic_bnx2x_next_idx(u16 idx)
2664 {
2665         idx++;
2666         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2667                 idx++;
2668
2669         return idx;
2670 }
2671
2672 static u16 cnic_bnx2x_hw_idx(u16 idx)
2673 {
2674         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
2675                 idx++;
2676         return idx;
2677 }
2678
2679 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2680 {
2681         struct cnic_local *cp = dev->cnic_priv;
2682         u16 i, ri, hw_prod, last;
2683         struct kcqe *kcqe;
2684         int kcqe_cnt = 0, last_cnt = 0;
2685
2686         i = ri = last = info->sw_prod_idx;
2687         ri &= MAX_KCQ_IDX;
2688         hw_prod = *info->hw_prod_idx_ptr;
2689         hw_prod = cp->hw_idx(hw_prod);
2690
2691         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2692                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2693                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2694                 i = cp->next_idx(i);
2695                 ri = i & MAX_KCQ_IDX;
2696                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2697                         last_cnt = kcqe_cnt;
2698                         last = i;
2699                 }
2700         }
2701
2702         info->sw_prod_idx = last;
2703         return last_cnt;
2704 }
2705
2706 static int cnic_l2_completion(struct cnic_local *cp)
2707 {
2708         u16 hw_cons, sw_cons;
2709         struct cnic_uio_dev *udev = cp->udev;
2710         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2711                                         (udev->l2_ring + (2 * BCM_PAGE_SIZE));
2712         u32 cmd;
2713         int comp = 0;
2714
2715         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2716                 return 0;
2717
2718         hw_cons = *cp->rx_cons_ptr;
2719         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2720                 hw_cons++;
2721
2722         sw_cons = cp->rx_cons;
2723         while (sw_cons != hw_cons) {
2724                 u8 cqe_fp_flags;
2725
2726                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2727                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2728                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2729                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2730                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2731                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2732                             cmd == RAMROD_CMD_ID_ETH_HALT)
2733                                 comp++;
2734                 }
2735                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2736         }
2737         return comp;
2738 }
2739
2740 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2741 {
2742         u16 rx_cons, tx_cons;
2743         int comp = 0;
2744
2745         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2746                 return;
2747
2748         rx_cons = *cp->rx_cons_ptr;
2749         tx_cons = *cp->tx_cons_ptr;
2750         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2751                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2752                         comp = cnic_l2_completion(cp);
2753
2754                 cp->tx_cons = tx_cons;
2755                 cp->rx_cons = rx_cons;
2756
2757                 if (cp->udev)
2758                         uio_event_notify(&cp->udev->cnic_uinfo);
2759         }
2760         if (comp)
2761                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2762 }
2763
2764 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2765 {
2766         struct cnic_local *cp = dev->cnic_priv;
2767         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2768         int kcqe_cnt;
2769
2770         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2771
2772         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2773
2774                 service_kcqes(dev, kcqe_cnt);
2775
2776                 /* Tell compiler that status_blk fields can change. */
2777                 barrier();
2778                 if (status_idx != *cp->kcq1.status_idx_ptr) {
2779                         status_idx = (u16) *cp->kcq1.status_idx_ptr;
2780                         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2781                 } else
2782                         break;
2783         }
2784
2785         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2786
2787         cnic_chk_pkt_rings(cp);
2788
2789         return status_idx;
2790 }
2791
2792 static int cnic_service_bnx2(void *data, void *status_blk)
2793 {
2794         struct cnic_dev *dev = data;
2795
2796         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2797                 struct status_block *sblk = status_blk;
2798
2799                 return sblk->status_idx;
2800         }
2801
2802         return cnic_service_bnx2_queues(dev);
2803 }
2804
2805 static void cnic_service_bnx2_msix(unsigned long data)
2806 {
2807         struct cnic_dev *dev = (struct cnic_dev *) data;
2808         struct cnic_local *cp = dev->cnic_priv;
2809
2810         cp->last_status_idx = cnic_service_bnx2_queues(dev);
2811
2812         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2813                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2814 }
2815
2816 static void cnic_doirq(struct cnic_dev *dev)
2817 {
2818         struct cnic_local *cp = dev->cnic_priv;
2819
2820         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2821                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
2822
2823                 prefetch(cp->status_blk.gen);
2824                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2825
2826                 tasklet_schedule(&cp->cnic_irq_task);
2827         }
2828 }
2829
2830 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2831 {
2832         struct cnic_dev *dev = dev_instance;
2833         struct cnic_local *cp = dev->cnic_priv;
2834
2835         if (cp->ack_int)
2836                 cp->ack_int(dev);
2837
2838         cnic_doirq(dev);
2839
2840         return IRQ_HANDLED;
2841 }
2842
2843 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2844                                       u16 index, u8 op, u8 update)
2845 {
2846         struct cnic_local *cp = dev->cnic_priv;
2847         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2848                        COMMAND_REG_INT_ACK);
2849         struct igu_ack_register igu_ack;
2850
2851         igu_ack.status_block_index = index;
2852         igu_ack.sb_id_and_flags =
2853                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2854                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2855                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2856                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2857
2858         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2859 }
2860
2861 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
2862                             u16 index, u8 op, u8 update)
2863 {
2864         struct igu_regular cmd_data;
2865         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
2866
2867         cmd_data.sb_id_and_flags =
2868                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
2869                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
2870                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
2871                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
2872
2873
2874         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
2875 }
2876
2877 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2878 {
2879         struct cnic_local *cp = dev->cnic_priv;
2880
2881         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
2882                            IGU_INT_DISABLE, 0);
2883 }
2884
2885 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
2886 {
2887         struct cnic_local *cp = dev->cnic_priv;
2888
2889         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
2890                         IGU_INT_DISABLE, 0);
2891 }
2892
2893 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
2894 {
2895         u32 last_status = *info->status_idx_ptr;
2896         int kcqe_cnt;
2897
2898         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
2899
2900                 service_kcqes(dev, kcqe_cnt);
2901
2902                 /* Tell compiler that sblk fields can change. */
2903                 barrier();
2904                 if (last_status == *info->status_idx_ptr)
2905                         break;
2906
2907                 last_status = *info->status_idx_ptr;
2908         }
2909         return last_status;
2910 }
2911
2912 static void cnic_service_bnx2x_bh(unsigned long data)
2913 {
2914         struct cnic_dev *dev = (struct cnic_dev *) data;
2915         struct cnic_local *cp = dev->cnic_priv;
2916         u32 status_idx;
2917
2918         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2919                 return;
2920
2921         status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
2922
2923         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
2924
2925         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
2926                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
2927
2928                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
2929                           MAX_KCQ_IDX);
2930
2931                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
2932                                 status_idx, IGU_INT_ENABLE, 1);
2933         } else {
2934                 cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
2935                                    status_idx, IGU_INT_ENABLE, 1);
2936         }
2937 }
2938
2939 static int cnic_service_bnx2x(void *data, void *status_blk)
2940 {
2941         struct cnic_dev *dev = data;
2942         struct cnic_local *cp = dev->cnic_priv;
2943
2944         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
2945                 cnic_doirq(dev);
2946
2947         cnic_chk_pkt_rings(cp);
2948
2949         return 0;
2950 }
2951
2952 static void cnic_ulp_stop(struct cnic_dev *dev)
2953 {
2954         struct cnic_local *cp = dev->cnic_priv;
2955         int if_type;
2956
2957         cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2958
2959         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2960                 struct cnic_ulp_ops *ulp_ops;
2961
2962                 mutex_lock(&cnic_lock);
2963                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
2964                                                     lockdep_is_held(&cnic_lock));
2965                 if (!ulp_ops) {
2966                         mutex_unlock(&cnic_lock);
2967                         continue;
2968                 }
2969                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2970                 mutex_unlock(&cnic_lock);
2971
2972                 if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2973                         ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2974
2975                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2976         }
2977 }
2978
2979 static void cnic_ulp_start(struct cnic_dev *dev)
2980 {
2981         struct cnic_local *cp = dev->cnic_priv;
2982         int if_type;
2983
2984         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
2985                 struct cnic_ulp_ops *ulp_ops;
2986
2987                 mutex_lock(&cnic_lock);
2988                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
2989                                                     lockdep_is_held(&cnic_lock));
2990                 if (!ulp_ops || !ulp_ops->cnic_start) {
2991                         mutex_unlock(&cnic_lock);
2992                         continue;
2993                 }
2994                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2995                 mutex_unlock(&cnic_lock);
2996
2997                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
2998                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2999
3000                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3001         }
3002 }
3003
3004 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3005 {
3006         struct cnic_dev *dev = data;
3007
3008         switch (info->cmd) {
3009         case CNIC_CTL_STOP_CMD:
3010                 cnic_hold(dev);
3011
3012                 cnic_ulp_stop(dev);
3013                 cnic_stop_hw(dev);
3014
3015                 cnic_put(dev);
3016                 break;
3017         case CNIC_CTL_START_CMD:
3018                 cnic_hold(dev);
3019
3020                 if (!cnic_start_hw(dev))
3021                         cnic_ulp_start(dev);
3022
3023                 cnic_put(dev);
3024                 break;
3025         case CNIC_CTL_COMPLETION_CMD: {
3026                 u32 cid = BNX2X_SW_CID(info->data.comp.cid);
3027                 u32 l5_cid;
3028                 struct cnic_local *cp = dev->cnic_priv;
3029
3030                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3031                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3032
3033                         ctx->wait_cond = 1;
3034                         wake_up(&ctx->waitq);
3035                 }
3036                 break;
3037         }
3038         default:
3039                 return -EINVAL;
3040         }
3041         return 0;
3042 }
3043
3044 static void cnic_ulp_init(struct cnic_dev *dev)
3045 {
3046         int i;
3047         struct cnic_local *cp = dev->cnic_priv;
3048
3049         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3050                 struct cnic_ulp_ops *ulp_ops;
3051
3052                 mutex_lock(&cnic_lock);
3053                 ulp_ops = cnic_ulp_tbl_prot(i);
3054                 if (!ulp_ops || !ulp_ops->cnic_init) {
3055                         mutex_unlock(&cnic_lock);
3056                         continue;
3057                 }
3058                 ulp_get(ulp_ops);
3059                 mutex_unlock(&cnic_lock);
3060
3061                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3062                         ulp_ops->cnic_init(dev);
3063
3064                 ulp_put(ulp_ops);
3065         }
3066 }
3067
3068 static void cnic_ulp_exit(struct cnic_dev *dev)
3069 {
3070         int i;
3071         struct cnic_local *cp = dev->cnic_priv;
3072
3073         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3074                 struct cnic_ulp_ops *ulp_ops;
3075
3076                 mutex_lock(&cnic_lock);
3077                 ulp_ops = cnic_ulp_tbl_prot(i);
3078                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3079                         mutex_unlock(&cnic_lock);
3080                         continue;
3081                 }
3082                 ulp_get(ulp_ops);
3083                 mutex_unlock(&cnic_lock);
3084
3085                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3086                         ulp_ops->cnic_exit(dev);
3087
3088                 ulp_put(ulp_ops);
3089         }
3090 }
3091
3092 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3093 {
3094         struct cnic_dev *dev = csk->dev;
3095         struct l4_kwq_offload_pg *l4kwqe;
3096         struct kwqe *wqes[1];
3097
3098         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3099         memset(l4kwqe, 0, sizeof(*l4kwqe));
3100         wqes[0] = (struct kwqe *) l4kwqe;
3101
3102         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3103         l4kwqe->flags =
3104                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3105         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3106
3107         l4kwqe->da0 = csk->ha[0];
3108         l4kwqe->da1 = csk->ha[1];
3109         l4kwqe->da2 = csk->ha[2];
3110         l4kwqe->da3 = csk->ha[3];
3111         l4kwqe->da4 = csk->ha[4];
3112         l4kwqe->da5 = csk->ha[5];
3113
3114         l4kwqe->sa0 = dev->mac_addr[0];
3115         l4kwqe->sa1 = dev->mac_addr[1];
3116         l4kwqe->sa2 = dev->mac_addr[2];
3117         l4kwqe->sa3 = dev->mac_addr[3];
3118         l4kwqe->sa4 = dev->mac_addr[4];
3119         l4kwqe->sa5 = dev->mac_addr[5];
3120
3121         l4kwqe->etype = ETH_P_IP;
3122         l4kwqe->ipid_start = DEF_IPID_START;
3123         l4kwqe->host_opaque = csk->l5_cid;
3124
3125         if (csk->vlan_id) {
3126                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3127                 l4kwqe->vlan_tag = csk->vlan_id;
3128                 l4kwqe->l2hdr_nbytes += 4;
3129         }
3130
3131         return dev->submit_kwqes(dev, wqes, 1);
3132 }
3133
3134 static int cnic_cm_update_pg(struct cnic_sock *csk)
3135 {
3136         struct cnic_dev *dev = csk->dev;
3137         struct l4_kwq_update_pg *l4kwqe;
3138         struct kwqe *wqes[1];
3139
3140         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3141         memset(l4kwqe, 0, sizeof(*l4kwqe));
3142         wqes[0] = (struct kwqe *) l4kwqe;
3143
3144         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3145         l4kwqe->flags =
3146                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3147         l4kwqe->pg_cid = csk->pg_cid;
3148
3149         l4kwqe->da0 = csk->ha[0];
3150         l4kwqe->da1 = csk->ha[1];
3151         l4kwqe->da2 = csk->ha[2];
3152         l4kwqe->da3 = csk->ha[3];
3153         l4kwqe->da4 = csk->ha[4];
3154         l4kwqe->da5 = csk->ha[5];
3155
3156         l4kwqe->pg_host_opaque = csk->l5_cid;
3157         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3158
3159         return dev->submit_kwqes(dev, wqes, 1);
3160 }
3161
3162 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3163 {
3164         struct cnic_dev *dev = csk->dev;
3165         struct l4_kwq_upload *l4kwqe;
3166         struct kwqe *wqes[1];
3167
3168         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3169         memset(l4kwqe, 0, sizeof(*l4kwqe));
3170         wqes[0] = (struct kwqe *) l4kwqe;
3171
3172         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3173         l4kwqe->flags =
3174                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3175         l4kwqe->cid = csk->pg_cid;
3176
3177         return dev->submit_kwqes(dev, wqes, 1);
3178 }
3179
3180 static int cnic_cm_conn_req(struct cnic_sock *csk)
3181 {
3182         struct cnic_dev *dev = csk->dev;
3183         struct l4_kwq_connect_req1 *l4kwqe1;
3184         struct l4_kwq_connect_req2 *l4kwqe2;
3185         struct l4_kwq_connect_req3 *l4kwqe3;
3186         struct kwqe *wqes[3];
3187         u8 tcp_flags = 0;
3188         int num_wqes = 2;
3189
3190         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3191         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3192         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3193         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3194         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3195         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3196
3197         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3198         l4kwqe3->flags =
3199                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3200         l4kwqe3->ka_timeout = csk->ka_timeout;
3201         l4kwqe3->ka_interval = csk->ka_interval;
3202         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3203         l4kwqe3->tos = csk->tos;
3204         l4kwqe3->ttl = csk->ttl;
3205         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3206         l4kwqe3->pmtu = csk->mtu;
3207         l4kwqe3->rcv_buf = csk->rcv_buf;
3208         l4kwqe3->snd_buf = csk->snd_buf;
3209         l4kwqe3->seed = csk->seed;
3210
3211         wqes[0] = (struct kwqe *) l4kwqe1;
3212         if (test_bit(SK_F_IPV6, &csk->flags)) {
3213                 wqes[1] = (struct kwqe *) l4kwqe2;
3214                 wqes[2] = (struct kwqe *) l4kwqe3;
3215                 num_wqes = 3;
3216
3217                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3218                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3219                 l4kwqe2->flags =
3220                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3221                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3222                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3223                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3224                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3225                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3226                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3227                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3228                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3229                                sizeof(struct tcphdr);
3230         } else {
3231                 wqes[1] = (struct kwqe *) l4kwqe3;
3232                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3233                                sizeof(struct tcphdr);
3234         }
3235
3236         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3237         l4kwqe1->flags =
3238                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3239                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3240         l4kwqe1->cid = csk->cid;
3241         l4kwqe1->pg_cid = csk->pg_cid;
3242         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3243         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3244         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3245         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3246         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3247                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3248         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3249                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3250         if (csk->tcp_flags & SK_TCP_NAGLE)
3251                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3252         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3253                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3254         if (csk->tcp_flags & SK_TCP_SACK)
3255                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3256         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3257                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3258
3259         l4kwqe1->tcp_flags = tcp_flags;
3260
3261         return dev->submit_kwqes(dev, wqes, num_wqes);
3262 }
3263
3264 static int cnic_cm_close_req(struct cnic_sock *csk)
3265 {
3266         struct cnic_dev *dev = csk->dev;
3267         struct l4_kwq_close_req *l4kwqe;
3268         struct kwqe *wqes[1];
3269
3270         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3271         memset(l4kwqe, 0, sizeof(*l4kwqe));
3272         wqes[0] = (struct kwqe *) l4kwqe;
3273
3274         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3275         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3276         l4kwqe->cid = csk->cid;
3277
3278         return dev->submit_kwqes(dev, wqes, 1);
3279 }
3280
3281 static int cnic_cm_abort_req(struct cnic_sock *csk)
3282 {
3283         struct cnic_dev *dev = csk->dev;
3284         struct l4_kwq_reset_req *l4kwqe;
3285         struct kwqe *wqes[1];
3286
3287         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3288         memset(l4kwqe, 0, sizeof(*l4kwqe));
3289         wqes[0] = (struct kwqe *) l4kwqe;
3290
3291         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3292         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3293         l4kwqe->cid = csk->cid;
3294
3295         return dev->submit_kwqes(dev, wqes, 1);
3296 }
3297
3298 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3299                           u32 l5_cid, struct cnic_sock **csk, void *context)
3300 {
3301         struct cnic_local *cp = dev->cnic_priv;
3302         struct cnic_sock *csk1;
3303
3304         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3305                 return -EINVAL;
3306
3307         if (cp->ctx_tbl) {
3308                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3309
3310                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3311                         return -EAGAIN;
3312         }
3313
3314         csk1 = &cp->csk_tbl[l5_cid];
3315         if (atomic_read(&csk1->ref_count))
3316                 return -EAGAIN;
3317
3318         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3319                 return -EBUSY;
3320
3321         csk1->dev = dev;
3322         csk1->cid = cid;
3323         csk1->l5_cid = l5_cid;
3324         csk1->ulp_type = ulp_type;
3325         csk1->context = context;
3326
3327         csk1->ka_timeout = DEF_KA_TIMEOUT;
3328         csk1->ka_interval = DEF_KA_INTERVAL;
3329         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3330         csk1->tos = DEF_TOS;
3331         csk1->ttl = DEF_TTL;
3332         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3333         csk1->rcv_buf = DEF_RCV_BUF;
3334         csk1->snd_buf = DEF_SND_BUF;
3335         csk1->seed = DEF_SEED;
3336
3337         *csk = csk1;
3338         return 0;
3339 }
3340
3341 static void cnic_cm_cleanup(struct cnic_sock *csk)
3342 {
3343         if (csk->src_port) {
3344                 struct cnic_dev *dev = csk->dev;
3345                 struct cnic_local *cp = dev->cnic_priv;
3346
3347                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3348                 csk->src_port = 0;
3349         }
3350 }
3351
3352 static void cnic_close_conn(struct cnic_sock *csk)
3353 {
3354         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3355                 cnic_cm_upload_pg(csk);
3356                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3357         }
3358         cnic_cm_cleanup(csk);
3359 }
3360
3361 static int cnic_cm_destroy(struct cnic_sock *csk)
3362 {
3363         if (!cnic_in_use(csk))
3364                 return -EINVAL;
3365
3366         csk_hold(csk);
3367         clear_bit(SK_F_INUSE, &csk->flags);
3368         smp_mb__after_clear_bit();
3369         while (atomic_read(&csk->ref_count) != 1)
3370                 msleep(1);
3371         cnic_cm_cleanup(csk);
3372
3373         csk->flags = 0;
3374         csk_put(csk);
3375         return 0;
3376 }
3377
3378 static inline u16 cnic_get_vlan(struct net_device *dev,
3379                                 struct net_device **vlan_dev)
3380 {
3381         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3382                 *vlan_dev = vlan_dev_real_dev(dev);
3383                 return vlan_dev_vlan_id(dev);
3384         }
3385         *vlan_dev = dev;
3386         return 0;
3387 }
3388
3389 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3390                              struct dst_entry **dst)
3391 {
3392 #if defined(CONFIG_INET)
3393         struct flowi fl;
3394         int err;
3395         struct rtable *rt;
3396
3397         memset(&fl, 0, sizeof(fl));
3398         fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
3399
3400         err = ip_route_output_key(&init_net, &rt, &fl);
3401         if (!err)
3402                 *dst = &rt->dst;
3403         return err;
3404 #else
3405         return -ENETUNREACH;
3406 #endif
3407 }
3408
3409 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3410                              struct dst_entry **dst)
3411 {
3412 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3413         struct flowi fl;
3414
3415         memset(&fl, 0, sizeof(fl));
3416         ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
3417         if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
3418                 fl.oif = dst_addr->sin6_scope_id;
3419
3420         *dst = ip6_route_output(&init_net, NULL, &fl);
3421         if (*dst)
3422                 return 0;
3423 #endif
3424
3425         return -ENETUNREACH;
3426 }
3427
3428 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3429                                            int ulp_type)
3430 {
3431         struct cnic_dev *dev = NULL;
3432         struct dst_entry *dst;
3433         struct net_device *netdev = NULL;
3434         int err = -ENETUNREACH;
3435
3436         if (dst_addr->sin_family == AF_INET)
3437                 err = cnic_get_v4_route(dst_addr, &dst);
3438         else if (dst_addr->sin_family == AF_INET6) {
3439                 struct sockaddr_in6 *dst_addr6 =
3440                         (struct sockaddr_in6 *) dst_addr;
3441
3442                 err = cnic_get_v6_route(dst_addr6, &dst);
3443         } else
3444                 return NULL;
3445
3446         if (err)
3447                 return NULL;
3448
3449         if (!dst->dev)
3450                 goto done;
3451
3452         cnic_get_vlan(dst->dev, &netdev);
3453
3454         dev = cnic_from_netdev(netdev);
3455
3456 done:
3457         dst_release(dst);
3458         if (dev)
3459                 cnic_put(dev);
3460         return dev;
3461 }
3462
3463 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3464 {
3465         struct cnic_dev *dev = csk->dev;
3466         struct cnic_local *cp = dev->cnic_priv;
3467
3468         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3469 }
3470
3471 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3472 {
3473         struct cnic_dev *dev = csk->dev;
3474         struct cnic_local *cp = dev->cnic_priv;
3475         int is_v6, rc = 0;
3476         struct dst_entry *dst = NULL;
3477         struct net_device *realdev;
3478         __be16 local_port;
3479         u32 port_id;
3480
3481         if (saddr->local.v6.sin6_family == AF_INET6 &&
3482             saddr->remote.v6.sin6_family == AF_INET6)
3483                 is_v6 = 1;
3484         else if (saddr->local.v4.sin_family == AF_INET &&
3485                  saddr->remote.v4.sin_family == AF_INET)
3486                 is_v6 = 0;
3487         else
3488                 return -EINVAL;
3489
3490         clear_bit(SK_F_IPV6, &csk->flags);
3491
3492         if (is_v6) {
3493                 set_bit(SK_F_IPV6, &csk->flags);
3494                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3495
3496                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3497                        sizeof(struct in6_addr));
3498                 csk->dst_port = saddr->remote.v6.sin6_port;
3499                 local_port = saddr->local.v6.sin6_port;
3500
3501         } else {
3502                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3503
3504                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3505                 csk->dst_port = saddr->remote.v4.sin_port;
3506                 local_port = saddr->local.v4.sin_port;
3507         }
3508
3509         csk->vlan_id = 0;
3510         csk->mtu = dev->netdev->mtu;
3511         if (dst && dst->dev) {
3512                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3513                 if (realdev == dev->netdev) {
3514                         csk->vlan_id = vlan;
3515                         csk->mtu = dst_mtu(dst);
3516                 }
3517         }
3518
3519         port_id = be16_to_cpu(local_port);
3520         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3521             port_id < CNIC_LOCAL_PORT_MAX) {
3522                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3523                         port_id = 0;
3524         } else
3525                 port_id = 0;
3526
3527         if (!port_id) {
3528                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3529                 if (port_id == -1) {
3530                         rc = -ENOMEM;
3531                         goto err_out;
3532                 }
3533                 local_port = cpu_to_be16(port_id);
3534         }
3535         csk->src_port = local_port;
3536
3537 err_out:
3538         dst_release(dst);
3539         return rc;
3540 }
3541
3542 static void cnic_init_csk_state(struct cnic_sock *csk)
3543 {
3544         csk->state = 0;
3545         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3546         clear_bit(SK_F_CLOSING, &csk->flags);
3547 }
3548
3549 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3550 {
3551         int err = 0;
3552
3553         if (!cnic_in_use(csk))
3554                 return -EINVAL;
3555
3556         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3557                 return -EINVAL;
3558
3559         cnic_init_csk_state(csk);
3560
3561         err = cnic_get_route(csk, saddr);
3562         if (err)
3563                 goto err_out;
3564
3565         err = cnic_resolve_addr(csk, saddr);
3566         if (!err)
3567                 return 0;
3568
3569 err_out:
3570         clear_bit(SK_F_CONNECT_START, &csk->flags);
3571         return err;
3572 }
3573
3574 static int cnic_cm_abort(struct cnic_sock *csk)
3575 {
3576         struct cnic_local *cp = csk->dev->cnic_priv;
3577         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3578
3579         if (!cnic_in_use(csk))
3580                 return -EINVAL;
3581
3582         if (cnic_abort_prep(csk))
3583                 return cnic_cm_abort_req(csk);
3584
3585         /* Getting here means that we haven't started connect, or
3586          * connect was not successful.
3587          */
3588
3589         cp->close_conn(csk, opcode);
3590         if (csk->state != opcode)
3591                 return -EALREADY;
3592
3593         return 0;
3594 }
3595
3596 static int cnic_cm_close(struct cnic_sock *csk)
3597 {
3598         if (!cnic_in_use(csk))
3599                 return -EINVAL;
3600
3601         if (cnic_close_prep(csk)) {
3602                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3603                 return cnic_cm_close_req(csk);
3604         } else {
3605                 return -EALREADY;
3606         }
3607         return 0;
3608 }
3609
3610 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3611                            u8 opcode)
3612 {
3613         struct cnic_ulp_ops *ulp_ops;
3614         int ulp_type = csk->ulp_type;
3615
3616         rcu_read_lock();
3617         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3618         if (ulp_ops) {
3619                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3620                         ulp_ops->cm_connect_complete(csk);
3621                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3622                         ulp_ops->cm_close_complete(csk);
3623                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3624                         ulp_ops->cm_remote_abort(csk);
3625                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3626                         ulp_ops->cm_abort_complete(csk);
3627                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3628                         ulp_ops->cm_remote_close(csk);
3629         }
3630         rcu_read_unlock();
3631 }
3632
3633 static int cnic_cm_set_pg(struct cnic_sock *csk)
3634 {
3635         if (cnic_offld_prep(csk)) {
3636                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3637                         cnic_cm_update_pg(csk);
3638                 else
3639                         cnic_cm_offload_pg(csk);
3640         }
3641         return 0;
3642 }
3643
3644 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3645 {
3646         struct cnic_local *cp = dev->cnic_priv;
3647         u32 l5_cid = kcqe->pg_host_opaque;
3648         u8 opcode = kcqe->op_code;
3649         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3650
3651         csk_hold(csk);
3652         if (!cnic_in_use(csk))
3653                 goto done;
3654
3655         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3656                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3657                 goto done;
3658         }
3659         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3660         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3661                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3662                 cnic_cm_upcall(cp, csk,
3663                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3664                 goto done;
3665         }
3666
3667         csk->pg_cid = kcqe->pg_cid;
3668         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3669         cnic_cm_conn_req(csk);
3670
3671 done:
3672         csk_put(csk);
3673 }
3674
3675 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3676 {
3677         struct cnic_local *cp = dev->cnic_priv;
3678         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3679         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3680         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3681
3682         ctx->timestamp = jiffies;
3683         ctx->wait_cond = 1;
3684         wake_up(&ctx->waitq);
3685 }
3686
3687 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3688 {
3689         struct cnic_local *cp = dev->cnic_priv;
3690         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3691         u8 opcode = l4kcqe->op_code;
3692         u32 l5_cid;
3693         struct cnic_sock *csk;
3694
3695         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3696                 cnic_process_fcoe_term_conn(dev, kcqe);
3697                 return;
3698         }
3699         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3700             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3701                 cnic_cm_process_offld_pg(dev, l4kcqe);
3702                 return;
3703         }
3704
3705         l5_cid = l4kcqe->conn_id;
3706         if (opcode & 0x80)
3707                 l5_cid = l4kcqe->cid;
3708         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3709                 return;
3710
3711         csk = &cp->csk_tbl[l5_cid];
3712         csk_hold(csk);
3713
3714         if (!cnic_in_use(csk)) {
3715                 csk_put(csk);
3716                 return;
3717         }
3718
3719         switch (opcode) {
3720         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3721                 if (l4kcqe->status != 0) {
3722                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3723                         cnic_cm_upcall(cp, csk,
3724                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3725                 }
3726                 break;
3727         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3728                 if (l4kcqe->status == 0)
3729                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3730
3731                 smp_mb__before_clear_bit();
3732                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3733                 cnic_cm_upcall(cp, csk, opcode);
3734                 break;
3735
3736         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3737         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3738         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3739         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3740         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3741                 cp->close_conn(csk, opcode);
3742                 break;
3743
3744         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3745                 cnic_cm_upcall(cp, csk, opcode);
3746                 break;
3747         }
3748         csk_put(csk);
3749 }
3750
3751 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3752 {
3753         struct cnic_dev *dev = data;
3754         int i;
3755
3756         for (i = 0; i < num; i++)
3757                 cnic_cm_process_kcqe(dev, kcqe[i]);
3758 }
3759
3760 static struct cnic_ulp_ops cm_ulp_ops = {
3761         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3762 };
3763
3764 static void cnic_cm_free_mem(struct cnic_dev *dev)
3765 {
3766         struct cnic_local *cp = dev->cnic_priv;
3767
3768         kfree(cp->csk_tbl);
3769         cp->csk_tbl = NULL;
3770         cnic_free_id_tbl(&cp->csk_port_tbl);
3771 }
3772
3773 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3774 {
3775         struct cnic_local *cp = dev->cnic_priv;
3776
3777         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3778                               GFP_KERNEL);
3779         if (!cp->csk_tbl)
3780                 return -ENOMEM;
3781
3782         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3783                              CNIC_LOCAL_PORT_MIN)) {
3784                 cnic_cm_free_mem(dev);
3785                 return -ENOMEM;
3786         }
3787         return 0;
3788 }
3789
3790 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3791 {
3792         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
3793                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
3794                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
3795                 csk->state = opcode;
3796         }
3797
3798         /* 1. If event opcode matches the expected event in csk->state
3799          * 2. If the expected event is CLOSE_COMP, we accept any event
3800          * 3. If the expected event is 0, meaning the connection was never
3801          *    never established, we accept the opcode from cm_abort.
3802          */
3803         if (opcode == csk->state || csk->state == 0 ||
3804             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) {
3805                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
3806                         if (csk->state == 0)
3807                                 csk->state = opcode;
3808                         return 1;
3809                 }
3810         }
3811         return 0;
3812 }
3813
3814 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3815 {
3816         struct cnic_dev *dev = csk->dev;
3817         struct cnic_local *cp = dev->cnic_priv;
3818
3819         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
3820                 cnic_cm_upcall(cp, csk, opcode);
3821                 return;
3822         }
3823
3824         clear_bit(SK_F_CONNECT_START, &csk->flags);
3825         cnic_close_conn(csk);
3826         csk->state = opcode;
3827         cnic_cm_upcall(cp, csk, opcode);
3828 }
3829
3830 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3831 {
3832 }
3833
3834 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3835 {
3836         u32 seed;
3837
3838         get_random_bytes(&seed, 4);
3839         cnic_ctx_wr(dev, 45, 0, seed);
3840         return 0;
3841 }
3842
3843 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3844 {
3845         struct cnic_dev *dev = csk->dev;
3846         struct cnic_local *cp = dev->cnic_priv;
3847         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3848         union l5cm_specific_data l5_data;
3849         u32 cmd = 0;
3850         int close_complete = 0;
3851
3852         switch (opcode) {
3853         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3854         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3855         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3856                 if (cnic_ready_to_close(csk, opcode)) {
3857                         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3858                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3859                         else
3860                                 close_complete = 1;
3861                 }
3862                 break;
3863         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3864                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3865                 break;
3866         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3867                 close_complete = 1;
3868                 break;
3869         }
3870         if (cmd) {
3871                 memset(&l5_data, 0, sizeof(l5_data));
3872
3873                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3874                                     &l5_data);
3875         } else if (close_complete) {
3876                 ctx->timestamp = jiffies;
3877                 cnic_close_conn(csk);
3878                 cnic_cm_upcall(cp, csk, csk->state);
3879         }
3880 }
3881
3882 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3883 {
3884         struct cnic_local *cp = dev->cnic_priv;
3885         int i;
3886
3887         if (!cp->ctx_tbl)
3888                 return;
3889
3890         if (!netif_running(dev->netdev))
3891                 return;
3892
3893         for (i = 0; i < cp->max_cid_space; i++) {
3894                 struct cnic_context *ctx = &cp->ctx_tbl[i];
3895
3896                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3897                         msleep(10);
3898
3899                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3900                         netdev_warn(dev->netdev, "CID %x not deleted\n",
3901                                    ctx->cid);
3902         }
3903
3904         cancel_delayed_work(&cp->delete_task);
3905         flush_workqueue(cnic_wq);
3906
3907         if (atomic_read(&cp->iscsi_conn) != 0)
3908                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
3909                             atomic_read(&cp->iscsi_conn));
3910 }
3911
3912 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3913 {
3914         struct cnic_local *cp = dev->cnic_priv;
3915         u32 pfid = cp->pfid;
3916         u32 port = CNIC_PORT(cp);
3917
3918         cnic_init_bnx2x_mac(dev);
3919         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3920
3921         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3922                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
3923
3924         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3925                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
3926         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3927                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
3928                 DEF_MAX_DA_COUNT);
3929
3930         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3931                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
3932         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3933                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
3934         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3935                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
3936         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3937                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
3938
3939         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
3940                 DEF_MAX_CWND);
3941         return 0;
3942 }
3943
3944 static void cnic_delete_task(struct work_struct *work)
3945 {
3946         struct cnic_local *cp;
3947         struct cnic_dev *dev;
3948         u32 i;
3949         int need_resched = 0;
3950
3951         cp = container_of(work, struct cnic_local, delete_task.work);
3952         dev = cp->dev;
3953
3954         for (i = 0; i < cp->max_cid_space; i++) {
3955                 struct cnic_context *ctx = &cp->ctx_tbl[i];
3956
3957                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
3958                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3959                         continue;
3960
3961                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
3962                         need_resched = 1;
3963                         continue;
3964                 }
3965
3966                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
3967                         continue;
3968
3969                 cnic_bnx2x_destroy_ramrod(dev, i);
3970
3971                 cnic_free_bnx2x_conn_resc(dev, i);
3972                 if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
3973                         atomic_dec(&cp->iscsi_conn);
3974
3975                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
3976         }
3977
3978         if (need_resched)
3979                 queue_delayed_work(cnic_wq, &cp->delete_task,
3980                                    msecs_to_jiffies(10));
3981
3982 }
3983
3984 static int cnic_cm_open(struct cnic_dev *dev)
3985 {
3986         struct cnic_local *cp = dev->cnic_priv;
3987         int err;
3988
3989         err = cnic_cm_alloc_mem(dev);
3990         if (err)
3991                 return err;
3992
3993         err = cp->start_cm(dev);
3994
3995         if (err)
3996                 goto err_out;
3997
3998         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
3999
4000         dev->cm_create = cnic_cm_create;
4001         dev->cm_destroy = cnic_cm_destroy;
4002         dev->cm_connect = cnic_cm_connect;
4003         dev->cm_abort = cnic_cm_abort;
4004         dev->cm_close = cnic_cm_close;
4005         dev->cm_select_dev = cnic_cm_select_dev;
4006
4007         cp->ulp_handle[CNIC_ULP_L4] = dev;
4008         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4009         return 0;
4010
4011 err_out:
4012         cnic_cm_free_mem(dev);
4013         return err;
4014 }
4015
4016 static int cnic_cm_shutdown(struct cnic_dev *dev)
4017 {
4018         struct cnic_local *cp = dev->cnic_priv;
4019         int i;
4020
4021         cp->stop_cm(dev);
4022
4023         if (!cp->csk_tbl)
4024                 return 0;
4025
4026         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4027                 struct cnic_sock *csk = &cp->csk_tbl[i];
4028
4029                 clear_bit(SK_F_INUSE, &csk->flags);
4030                 cnic_cm_cleanup(csk);
4031         }
4032         cnic_cm_free_mem(dev);
4033
4034         return 0;
4035 }
4036
4037 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4038 {
4039         u32 cid_addr;
4040         int i;
4041
4042         cid_addr = GET_CID_ADDR(cid);
4043
4044         for (i = 0; i < CTX_SIZE; i += 4)
4045                 cnic_ctx_wr(dev, cid_addr, i, 0);
4046 }
4047
4048 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4049 {
4050         struct cnic_local *cp = dev->cnic_priv;
4051         int ret = 0, i;
4052         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4053
4054         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4055                 return 0;
4056
4057         for (i = 0; i < cp->ctx_blks; i++) {
4058                 int j;
4059                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4060                 u32 val;
4061
4062                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
4063
4064                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4065                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4066                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4067                         (u64) cp->ctx_arr[i].mapping >> 32);
4068                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4069                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4070                 for (j = 0; j < 10; j++) {
4071
4072                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4073                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4074                                 break;
4075                         udelay(5);
4076                 }
4077                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4078                         ret = -EBUSY;
4079                         break;
4080                 }
4081         }
4082         return ret;
4083 }
4084
4085 static void cnic_free_irq(struct cnic_dev *dev)
4086 {
4087         struct cnic_local *cp = dev->cnic_priv;
4088         struct cnic_eth_dev *ethdev = cp->ethdev;
4089
4090         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4091                 cp->disable_int_sync(dev);
4092                 tasklet_kill(&cp->cnic_irq_task);
4093                 free_irq(ethdev->irq_arr[0].vector, dev);
4094         }
4095 }
4096
4097 static int cnic_request_irq(struct cnic_dev *dev)
4098 {
4099         struct cnic_local *cp = dev->cnic_priv;
4100         struct cnic_eth_dev *ethdev = cp->ethdev;
4101         int err;
4102
4103         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4104         if (err)
4105                 tasklet_disable(&cp->cnic_irq_task);
4106
4107         return err;
4108 }
4109
4110 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4111 {
4112         struct cnic_local *cp = dev->cnic_priv;
4113         struct cnic_eth_dev *ethdev = cp->ethdev;
4114
4115         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4116                 int err, i = 0;
4117                 int sblk_num = cp->status_blk_num;
4118                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4119                            BNX2_HC_SB_CONFIG_1;
4120
4121                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4122
4123                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4124                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4125                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4126
4127                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4128                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4129                              (unsigned long) dev);
4130                 err = cnic_request_irq(dev);
4131                 if (err)
4132                         return err;
4133
4134                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4135                        i < 10) {
4136                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4137                                 1 << (11 + sblk_num));
4138                         udelay(10);
4139                         i++;
4140                         barrier();
4141                 }
4142                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4143                         cnic_free_irq(dev);
4144                         goto failed;
4145                 }
4146
4147         } else {
4148                 struct status_block *sblk = cp->status_blk.gen;
4149                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4150                 int i = 0;
4151
4152                 while (sblk->status_completion_producer_index && i < 10) {
4153                         CNIC_WR(dev, BNX2_HC_COMMAND,
4154                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4155                         udelay(10);
4156                         i++;
4157                         barrier();
4158                 }
4159                 if (sblk->status_completion_producer_index)
4160                         goto failed;
4161
4162         }
4163         return 0;
4164
4165 failed:
4166         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4167         return -EBUSY;
4168 }
4169
4170 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4171 {
4172         struct cnic_local *cp = dev->cnic_priv;
4173         struct cnic_eth_dev *ethdev = cp->ethdev;
4174
4175         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4176                 return;
4177
4178         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4179                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4180 }
4181
4182 static void cnic_get_bnx2_iscsi_info(struct cnic_dev *dev)
4183 {
4184         u32 max_conn;
4185
4186         max_conn = cnic_reg_rd_ind(dev, BNX2_FW_MAX_ISCSI_CONN);
4187         dev->max_iscsi_conn = max_conn;
4188 }
4189
4190 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4191 {
4192         struct cnic_local *cp = dev->cnic_priv;
4193         struct cnic_eth_dev *ethdev = cp->ethdev;
4194
4195         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4196                 return;
4197
4198         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4199                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4200         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4201         synchronize_irq(ethdev->irq_arr[0].vector);
4202 }
4203
4204 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4205 {
4206         struct cnic_local *cp = dev->cnic_priv;
4207         struct cnic_eth_dev *ethdev = cp->ethdev;
4208         struct cnic_uio_dev *udev = cp->udev;
4209         u32 cid_addr, tx_cid, sb_id;
4210         u32 val, offset0, offset1, offset2, offset3;
4211         int i;
4212         struct tx_bd *txbd;
4213         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4214         struct status_block *s_blk = cp->status_blk.gen;
4215
4216         sb_id = cp->status_blk_num;
4217         tx_cid = 20;
4218         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4219         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4220                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4221
4222                 tx_cid = TX_TSS_CID + sb_id - 1;
4223                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4224                         (TX_TSS_CID << 7));
4225                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4226         }
4227         cp->tx_cons = *cp->tx_cons_ptr;
4228
4229         cid_addr = GET_CID_ADDR(tx_cid);
4230         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
4231                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4232
4233                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4234                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4235
4236                 offset0 = BNX2_L2CTX_TYPE_XI;
4237                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4238                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4239                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4240         } else {
4241                 cnic_init_context(dev, tx_cid);
4242                 cnic_init_context(dev, tx_cid + 1);
4243
4244                 offset0 = BNX2_L2CTX_TYPE;
4245                 offset1 = BNX2_L2CTX_CMD_TYPE;
4246                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4247                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4248         }
4249         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4250         cnic_ctx_wr(dev, cid_addr, offset0, val);
4251
4252         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4253         cnic_ctx_wr(dev, cid_addr, offset1, val);
4254
4255         txbd = (struct tx_bd *) udev->l2_ring;
4256
4257         buf_map = udev->l2_buf_map;
4258         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
4259                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4260                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4261         }
4262         val = (u64) ring_map >> 32;
4263         cnic_ctx_wr(dev, cid_addr, offset2, val);
4264         txbd->tx_bd_haddr_hi = val;
4265
4266         val = (u64) ring_map & 0xffffffff;
4267         cnic_ctx_wr(dev, cid_addr, offset3, val);
4268         txbd->tx_bd_haddr_lo = val;
4269 }
4270
4271 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4272 {
4273         struct cnic_local *cp = dev->cnic_priv;
4274         struct cnic_eth_dev *ethdev = cp->ethdev;
4275         struct cnic_uio_dev *udev = cp->udev;
4276         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4277         int i;
4278         struct rx_bd *rxbd;
4279         struct status_block *s_blk = cp->status_blk.gen;
4280         dma_addr_t ring_map = udev->l2_ring_map;
4281
4282         sb_id = cp->status_blk_num;
4283         cnic_init_context(dev, 2);
4284         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4285         coal_reg = BNX2_HC_COMMAND;
4286         coal_val = CNIC_RD(dev, coal_reg);
4287         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4288                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4289
4290                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4291                 coal_reg = BNX2_HC_COALESCE_NOW;
4292                 coal_val = 1 << (11 + sb_id);
4293         }
4294         i = 0;
4295         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4296                 CNIC_WR(dev, coal_reg, coal_val);
4297                 udelay(10);
4298                 i++;
4299                 barrier();
4300         }
4301         cp->rx_cons = *cp->rx_cons_ptr;
4302
4303         cid_addr = GET_CID_ADDR(2);
4304         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4305               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4306         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4307
4308         if (sb_id == 0)
4309                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4310         else
4311                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4312         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4313
4314         rxbd = (struct rx_bd *) (udev->l2_ring + BCM_PAGE_SIZE);
4315         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
4316                 dma_addr_t buf_map;
4317                 int n = (i % cp->l2_rx_ring_size) + 1;
4318
4319                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4320                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4321                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4322                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4323                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4324         }
4325         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4326         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4327         rxbd->rx_bd_haddr_hi = val;
4328
4329         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4330         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4331         rxbd->rx_bd_haddr_lo = val;
4332
4333         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4334         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4335 }
4336
4337 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4338 {
4339         struct kwqe *wqes[1], l2kwqe;
4340
4341         memset(&l2kwqe, 0, sizeof(l2kwqe));
4342         wqes[0] = &l2kwqe;
4343         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4344                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4345                                KWQE_OPCODE_SHIFT) | 2;
4346         dev->submit_kwqes(dev, wqes, 1);
4347 }
4348
4349 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4350 {
4351         struct cnic_local *cp = dev->cnic_priv;
4352         u32 val;
4353
4354         val = cp->func << 2;
4355
4356         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4357
4358         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4359                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4360         dev->mac_addr[0] = (u8) (val >> 8);
4361         dev->mac_addr[1] = (u8) val;
4362
4363         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4364
4365         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4366                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4367         dev->mac_addr[2] = (u8) (val >> 24);
4368         dev->mac_addr[3] = (u8) (val >> 16);
4369         dev->mac_addr[4] = (u8) (val >> 8);
4370         dev->mac_addr[5] = (u8) val;
4371
4372         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4373
4374         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4375         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4376                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4377
4378         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4379         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4380         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4381 }
4382
4383 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4384 {
4385         struct cnic_local *cp = dev->cnic_priv;
4386         struct cnic_eth_dev *ethdev = cp->ethdev;
4387         struct status_block *sblk = cp->status_blk.gen;
4388         u32 val, kcq_cid_addr, kwq_cid_addr;
4389         int err;
4390
4391         cnic_set_bnx2_mac(dev);
4392
4393         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4394         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4395         if (BCM_PAGE_BITS > 12)
4396                 val |= (12 - 8)  << 4;
4397         else
4398                 val |= (BCM_PAGE_BITS - 8)  << 4;
4399
4400         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4401
4402         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4403         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4404         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4405
4406         err = cnic_setup_5709_context(dev, 1);
4407         if (err)
4408                 return err;
4409
4410         cnic_init_context(dev, KWQ_CID);
4411         cnic_init_context(dev, KCQ_CID);
4412
4413         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4414         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4415
4416         cp->max_kwq_idx = MAX_KWQ_IDX;
4417         cp->kwq_prod_idx = 0;
4418         cp->kwq_con_idx = 0;
4419         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4420
4421         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
4422                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4423         else
4424                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4425
4426         /* Initialize the kernel work queue context. */
4427         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4428               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4429         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4430
4431         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4432         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4433
4434         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4435         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4436
4437         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4438         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4439
4440         val = (u32) cp->kwq_info.pgtbl_map;
4441         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4442
4443         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4444         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4445
4446         cp->kcq1.sw_prod_idx = 0;
4447         cp->kcq1.hw_prod_idx_ptr =
4448                 (u16 *) &sblk->status_completion_producer_index;
4449
4450         cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
4451
4452         /* Initialize the kernel complete queue context. */
4453         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4454               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4455         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4456
4457         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4458         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4459
4460         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4461         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4462
4463         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4464         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4465
4466         val = (u32) cp->kcq1.dma.pgtbl_map;
4467         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4468
4469         cp->int_num = 0;
4470         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4471                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4472                 u32 sb_id = cp->status_blk_num;
4473                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4474
4475                 cp->kcq1.hw_prod_idx_ptr =
4476                         (u16 *) &msblk->status_completion_producer_index;
4477                 cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
4478                 cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
4479                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4480                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4481                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4482         }
4483
4484         /* Enable Commnad Scheduler notification when we write to the
4485          * host producer index of the kernel contexts. */
4486         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4487
4488         /* Enable Command Scheduler notification when we write to either
4489          * the Send Queue or Receive Queue producer indexes of the kernel
4490          * bypass contexts. */
4491         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4492         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4493
4494         /* Notify COM when the driver post an application buffer. */
4495         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4496
4497         /* Set the CP and COM doorbells.  These two processors polls the
4498          * doorbell for a non zero value before running.  This must be done
4499          * after setting up the kernel queue contexts. */
4500         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4501         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4502
4503         cnic_init_bnx2_tx_ring(dev);
4504         cnic_init_bnx2_rx_ring(dev);
4505
4506         err = cnic_init_bnx2_irq(dev);
4507         if (err) {
4508                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4509                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4510                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4511                 return err;
4512         }
4513
4514         cnic_get_bnx2_iscsi_info(dev);
4515
4516         return 0;
4517 }
4518
4519 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4520 {
4521         struct cnic_local *cp = dev->cnic_priv;
4522         struct cnic_eth_dev *ethdev = cp->ethdev;
4523         u32 start_offset = ethdev->ctx_tbl_offset;
4524         int i;
4525
4526         for (i = 0; i < cp->ctx_blks; i++) {
4527                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4528                 dma_addr_t map = ctx->mapping;
4529
4530                 if (cp->ctx_align) {
4531                         unsigned long mask = cp->ctx_align - 1;
4532
4533                         map = (map + mask) & ~mask;
4534                 }
4535
4536                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4537         }
4538 }
4539
4540 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4541 {
4542         struct cnic_local *cp = dev->cnic_priv;
4543         struct cnic_eth_dev *ethdev = cp->ethdev;
4544         int err = 0;
4545
4546         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4547                      (unsigned long) dev);
4548         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4549                 err = cnic_request_irq(dev);
4550
4551         return err;
4552 }
4553
4554 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4555                                                 u16 sb_id, u8 sb_index,
4556                                                 u8 disable)
4557 {
4558
4559         u32 addr = BAR_CSTRORM_INTMEM +
4560                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4561                         offsetof(struct hc_status_block_data_e1x, index_data) +
4562                         sizeof(struct hc_index_data)*sb_index +
4563                         offsetof(struct hc_index_data, flags);
4564         u16 flags = CNIC_RD16(dev, addr);
4565         /* clear and set */
4566         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4567         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4568                   HC_INDEX_DATA_HC_ENABLED);
4569         CNIC_WR16(dev, addr, flags);
4570 }
4571
4572 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4573 {
4574         struct cnic_local *cp = dev->cnic_priv;
4575         u8 sb_id = cp->status_blk_num;
4576
4577         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4578                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4579                         offsetof(struct hc_status_block_data_e1x, index_data) +
4580                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4581                         offsetof(struct hc_index_data, timeout), 64 / 12);
4582         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4583 }
4584
4585 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4586 {
4587 }
4588
4589 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4590                                     struct client_init_ramrod_data *data)
4591 {
4592         struct cnic_local *cp = dev->cnic_priv;
4593         struct cnic_uio_dev *udev = cp->udev;
4594         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4595         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4596         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4597         int port = CNIC_PORT(cp);
4598         int i;
4599         u32 cli = cp->ethdev->iscsi_l2_client_id;
4600         u32 val;
4601
4602         memset(txbd, 0, BCM_PAGE_SIZE);
4603
4604         buf_map = udev->l2_buf_map;
4605         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4606                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4607                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4608
4609                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4610                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4611                 reg_bd->addr_hi = start_bd->addr_hi;
4612                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4613                 start_bd->nbytes = cpu_to_le16(0x10);
4614                 start_bd->nbd = cpu_to_le16(3);
4615                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4616                 start_bd->general_data = (UNICAST_ADDRESS <<
4617                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
4618                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4619
4620         }
4621
4622         val = (u64) ring_map >> 32;
4623         txbd->next_bd.addr_hi = cpu_to_le32(val);
4624
4625         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4626
4627         val = (u64) ring_map & 0xffffffff;
4628         txbd->next_bd.addr_lo = cpu_to_le32(val);
4629
4630         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4631
4632         /* Other ramrod params */
4633         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4634         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4635
4636         /* reset xstorm per client statistics */
4637         if (cli < MAX_STAT_COUNTER_ID) {
4638                 val = BAR_XSTRORM_INTMEM +
4639                       XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4640                 for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
4641                         CNIC_WR(dev, val + i * 4, 0);
4642         }
4643
4644         cp->tx_cons_ptr =
4645                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4646 }
4647
4648 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4649                                     struct client_init_ramrod_data *data)
4650 {
4651         struct cnic_local *cp = dev->cnic_priv;
4652         struct cnic_uio_dev *udev = cp->udev;
4653         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4654                                 BCM_PAGE_SIZE);
4655         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4656                                 (udev->l2_ring + (2 * BCM_PAGE_SIZE));
4657         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4658         int i;
4659         int port = CNIC_PORT(cp);
4660         u32 cli = cp->ethdev->iscsi_l2_client_id;
4661         int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4662         u32 val;
4663         dma_addr_t ring_map = udev->l2_ring_map;
4664
4665         /* General data */
4666         data->general.client_id = cli;
4667         data->general.statistics_en_flg = 1;
4668         data->general.statistics_counter_id = cli;
4669         data->general.activate_flg = 1;
4670         data->general.sp_client_id = cli;
4671
4672         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4673                 dma_addr_t buf_map;
4674                 int n = (i % cp->l2_rx_ring_size) + 1;
4675
4676                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4677                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4678                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4679         }
4680
4681         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4682         rxbd->addr_hi = cpu_to_le32(val);
4683         data->rx.bd_page_base.hi = cpu_to_le32(val);
4684
4685         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4686         rxbd->addr_lo = cpu_to_le32(val);
4687         data->rx.bd_page_base.lo = cpu_to_le32(val);
4688
4689         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4690         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4691         rxcqe->addr_hi = cpu_to_le32(val);
4692         data->rx.cqe_page_base.hi = cpu_to_le32(val);
4693
4694         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4695         rxcqe->addr_lo = cpu_to_le32(val);
4696         data->rx.cqe_page_base.lo = cpu_to_le32(val);
4697
4698         /* Other ramrod params */
4699         data->rx.client_qzone_id = cl_qzone_id;
4700         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
4701         data->rx.status_block_id = BNX2X_DEF_SB_ID;
4702
4703         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4704         data->rx.bd_buff_size = cpu_to_le16(cp->l2_single_buf_size);
4705
4706         data->rx.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4707         data->rx.outer_vlan_removal_enable_flg = 1;
4708
4709         /* reset tstorm and ustorm per client statistics */
4710         if (cli < MAX_STAT_COUNTER_ID) {
4711                 val = BAR_TSTRORM_INTMEM +
4712                       TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4713                 for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
4714                         CNIC_WR(dev, val + i * 4, 0);
4715
4716                 val = BAR_USTRORM_INTMEM +
4717                       USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
4718                 for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
4719                         CNIC_WR(dev, val + i * 4, 0);
4720         }
4721
4722         cp->rx_cons_ptr =
4723                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4724         cp->rx_cons = *cp->rx_cons_ptr;
4725 }
4726
4727 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
4728 {
4729         struct cnic_local *cp = dev->cnic_priv;
4730         u32 pfid = cp->pfid;
4731
4732         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4733                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4734         cp->kcq1.sw_prod_idx = 0;
4735
4736         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4737                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4738
4739                 cp->kcq1.hw_prod_idx_ptr =
4740                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4741                 cp->kcq1.status_idx_ptr =
4742                         &sb->sb.running_index[SM_RX_ID];
4743         } else {
4744                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
4745
4746                 cp->kcq1.hw_prod_idx_ptr =
4747                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4748                 cp->kcq1.status_idx_ptr =
4749                         &sb->sb.running_index[SM_RX_ID];
4750         }
4751
4752         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4753                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4754
4755                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
4756                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
4757                 cp->kcq2.sw_prod_idx = 0;
4758                 cp->kcq2.hw_prod_idx_ptr =
4759                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
4760                 cp->kcq2.status_idx_ptr =
4761                         &sb->sb.running_index[SM_RX_ID];
4762         }
4763 }
4764
4765 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4766 {
4767         struct cnic_local *cp = dev->cnic_priv;
4768         struct cnic_eth_dev *ethdev = cp->ethdev;
4769         int func = CNIC_FUNC(cp), ret, i;
4770         u32 pfid;
4771
4772         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4773                 u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);
4774
4775                 if (!(val & 1))
4776                         val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN);
4777                 else
4778                         val = (val >> 1) & 1;
4779
4780                 if (val)
4781                         cp->pfid = func >> 1;
4782                 else
4783                         cp->pfid = func & 0x6;
4784         } else {
4785                 cp->pfid = func;
4786         }
4787         pfid = cp->pfid;
4788
4789         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4790                                cp->iscsi_start_cid);
4791
4792         if (ret)
4793                 return -ENOMEM;
4794
4795         if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
4796                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl,
4797                                         BNX2X_FCOE_NUM_CONNECTIONS,
4798                                         cp->fcoe_start_cid);
4799
4800                 if (ret)
4801                         return -ENOMEM;
4802         }
4803
4804         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
4805
4806         cnic_init_bnx2x_kcq(dev);
4807
4808         /* Only 1 EQ */
4809         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
4810         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4811                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
4812         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4813                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
4814                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
4815         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4816                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
4817                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
4818         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4819                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
4820                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
4821         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4822                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
4823                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
4824         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4825                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
4826         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4827                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
4828         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4829                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
4830                 HC_INDEX_ISCSI_EQ_CONS);
4831
4832         for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
4833                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4834                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i),
4835                         cp->conn_buf_info.pgtbl[2 * i]);
4836                 CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4837                         TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i) + 4,
4838                         cp->conn_buf_info.pgtbl[(2 * i) + 1]);
4839         }
4840
4841         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4842                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
4843                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4844         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4845                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
4846                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4847
4848         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4849                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
4850
4851         cnic_setup_bnx2x_context(dev);
4852
4853         ret = cnic_init_bnx2x_irq(dev);
4854         if (ret)
4855                 return ret;
4856
4857         return 0;
4858 }
4859
4860 static void cnic_init_rings(struct cnic_dev *dev)
4861 {
4862         struct cnic_local *cp = dev->cnic_priv;
4863         struct cnic_uio_dev *udev = cp->udev;
4864
4865         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4866                 return;
4867
4868         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4869                 cnic_init_bnx2_tx_ring(dev);
4870                 cnic_init_bnx2_rx_ring(dev);
4871                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4872         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4873                 u32 cli = cp->ethdev->iscsi_l2_client_id;
4874                 u32 cid = cp->ethdev->iscsi_l2_cid;
4875                 u32 cl_qzone_id;
4876                 struct client_init_ramrod_data *data;
4877                 union l5cm_specific_data l5_data;
4878                 struct ustorm_eth_rx_producers rx_prods = {0};
4879                 u32 off, i;
4880
4881                 rx_prods.bd_prod = 0;
4882                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4883                 barrier();
4884
4885                 cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4886
4887                 off = BAR_USTRORM_INTMEM +
4888                         (BNX2X_CHIP_IS_E2(cp->chip_id) ?
4889                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
4890                          USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
4891
4892                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4893                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4894
4895                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4896
4897                 data = udev->l2_buf;
4898
4899                 memset(data, 0, sizeof(*data));
4900
4901                 cnic_init_bnx2x_tx_ring(dev, data);
4902                 cnic_init_bnx2x_rx_ring(dev, data);
4903
4904                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
4905                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
4906
4907                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4908
4909                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4910                         cid, ETH_CONNECTION_TYPE, &l5_data);
4911
4912                 i = 0;
4913                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4914                        ++i < 10)
4915                         msleep(1);
4916
4917                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4918                         netdev_err(dev->netdev,
4919                                 "iSCSI CLIENT_SETUP did not complete\n");
4920                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4921                 cnic_ring_ctl(dev, cid, cli, 1);
4922         }
4923 }
4924
4925 static void cnic_shutdown_rings(struct cnic_dev *dev)
4926 {
4927         struct cnic_local *cp = dev->cnic_priv;
4928
4929         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4930                 return;
4931
4932         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4933                 cnic_shutdown_bnx2_rx_ring(dev);
4934         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4935                 struct cnic_local *cp = dev->cnic_priv;
4936                 u32 cli = cp->ethdev->iscsi_l2_client_id;
4937                 u32 cid = cp->ethdev->iscsi_l2_cid;
4938                 union l5cm_specific_data l5_data;
4939                 int i;
4940
4941                 cnic_ring_ctl(dev, cid, cli, 0);
4942
4943                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4944
4945                 l5_data.phy_address.lo = cli;
4946                 l5_data.phy_address.hi = 0;
4947                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4948                         cid, ETH_CONNECTION_TYPE, &l5_data);
4949                 i = 0;
4950                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4951                        ++i < 10)
4952                         msleep(1);
4953
4954                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4955                         netdev_err(dev->netdev,
4956                                 "iSCSI CLIENT_HALT did not complete\n");
4957                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4958
4959                 memset(&l5_data, 0, sizeof(l5_data));
4960                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
4961                         cid, NONE_CONNECTION_TYPE, &l5_data);
4962                 msleep(10);
4963         }
4964         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4965 }
4966
4967 static int cnic_register_netdev(struct cnic_dev *dev)
4968 {
4969         struct cnic_local *cp = dev->cnic_priv;
4970         struct cnic_eth_dev *ethdev = cp->ethdev;
4971         int err;
4972
4973         if (!ethdev)
4974                 return -ENODEV;
4975
4976         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
4977                 return 0;
4978
4979         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4980         if (err)
4981                 netdev_err(dev->netdev, "register_cnic failed\n");
4982
4983         return err;
4984 }
4985
4986 static void cnic_unregister_netdev(struct cnic_dev *dev)
4987 {
4988         struct cnic_local *cp = dev->cnic_priv;
4989         struct cnic_eth_dev *ethdev = cp->ethdev;
4990
4991         if (!ethdev)
4992                 return;
4993
4994         ethdev->drv_unregister_cnic(dev->netdev);
4995 }
4996
4997 static int cnic_start_hw(struct cnic_dev *dev)
4998 {
4999         struct cnic_local *cp = dev->cnic_priv;
5000         struct cnic_eth_dev *ethdev = cp->ethdev;
5001         int err;
5002
5003         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5004                 return -EALREADY;
5005
5006         dev->regview = ethdev->io_base;
5007         pci_dev_get(dev->pcidev);
5008         cp->func = PCI_FUNC(dev->pcidev->devfn);
5009         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5010         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5011
5012         err = cp->alloc_resc(dev);
5013         if (err) {
5014                 netdev_err(dev->netdev, "allocate resource failure\n");
5015                 goto err1;
5016         }
5017
5018         err = cp->start_hw(dev);
5019         if (err)
5020                 goto err1;
5021
5022         err = cnic_cm_open(dev);
5023         if (err)
5024                 goto err1;
5025
5026         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5027
5028         cp->enable_int(dev);
5029
5030         return 0;
5031
5032 err1:
5033         cp->free_resc(dev);
5034         pci_dev_put(dev->pcidev);
5035         return err;
5036 }
5037
5038 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5039 {
5040         cnic_disable_bnx2_int_sync(dev);
5041
5042         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5043         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5044
5045         cnic_init_context(dev, KWQ_CID);
5046         cnic_init_context(dev, KCQ_CID);
5047
5048         cnic_setup_5709_context(dev, 0);
5049         cnic_free_irq(dev);
5050
5051         cnic_free_resc(dev);
5052 }
5053
5054
5055 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5056 {
5057         struct cnic_local *cp = dev->cnic_priv;
5058
5059         cnic_free_irq(dev);
5060         *cp->kcq1.hw_prod_idx_ptr = 0;
5061         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5062                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5063         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5064         cnic_free_resc(dev);
5065 }
5066
5067 static void cnic_stop_hw(struct cnic_dev *dev)
5068 {
5069         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5070                 struct cnic_local *cp = dev->cnic_priv;
5071                 int i = 0;
5072
5073                 /* Need to wait for the ring shutdown event to complete
5074                  * before clearing the CNIC_UP flag.
5075                  */
5076                 while (cp->udev->uio_dev != -1 && i < 15) {
5077                         msleep(100);
5078                         i++;
5079                 }
5080                 cnic_shutdown_rings(dev);
5081                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5082                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
5083                 synchronize_rcu();
5084                 cnic_cm_shutdown(dev);
5085                 cp->stop_hw(dev);
5086                 pci_dev_put(dev->pcidev);
5087         }
5088 }
5089
5090 static void cnic_free_dev(struct cnic_dev *dev)
5091 {
5092         int i = 0;
5093
5094         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5095                 msleep(100);
5096                 i++;
5097         }
5098         if (atomic_read(&dev->ref_count) != 0)
5099                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5100
5101         netdev_info(dev->netdev, "Removed CNIC device\n");
5102         dev_put(dev->netdev);
5103         kfree(dev);
5104 }
5105
5106 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5107                                        struct pci_dev *pdev)
5108 {
5109         struct cnic_dev *cdev;
5110         struct cnic_local *cp;
5111         int alloc_size;
5112
5113         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5114
5115         cdev = kzalloc(alloc_size , GFP_KERNEL);
5116         if (cdev == NULL) {
5117                 netdev_err(dev, "allocate dev struct failure\n");
5118                 return NULL;
5119         }
5120
5121         cdev->netdev = dev;
5122         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5123         cdev->register_device = cnic_register_device;
5124         cdev->unregister_device = cnic_unregister_device;
5125         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5126
5127         cp = cdev->cnic_priv;
5128         cp->dev = cdev;
5129         cp->l2_single_buf_size = 0x400;
5130         cp->l2_rx_ring_size = 3;
5131
5132         spin_lock_init(&cp->cnic_ulp_lock);
5133
5134         netdev_info(dev, "Added CNIC device\n");
5135
5136         return cdev;
5137 }
5138
5139 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5140 {
5141         struct pci_dev *pdev;
5142         struct cnic_dev *cdev;
5143         struct cnic_local *cp;
5144         struct cnic_eth_dev *ethdev = NULL;
5145         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5146
5147         probe = symbol_get(bnx2_cnic_probe);
5148         if (probe) {
5149                 ethdev = (*probe)(dev);
5150                 symbol_put(bnx2_cnic_probe);
5151         }
5152         if (!ethdev)
5153                 return NULL;
5154
5155         pdev = ethdev->pdev;
5156         if (!pdev)
5157                 return NULL;
5158
5159         dev_hold(dev);
5160         pci_dev_get(pdev);
5161         if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5162             pdev->device == PCI_DEVICE_ID_NX2_5709S) {
5163                 u8 rev;
5164
5165                 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
5166                 if (rev < 0x10) {
5167                         pci_dev_put(pdev);
5168                         goto cnic_err;
5169                 }
5170         }
5171         pci_dev_put(pdev);
5172
5173         cdev = cnic_alloc_dev(dev, pdev);
5174         if (cdev == NULL)
5175                 goto cnic_err;
5176
5177         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5178         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5179
5180         cp = cdev->cnic_priv;
5181         cp->ethdev = ethdev;
5182         cdev->pcidev = pdev;
5183         cp->chip_id = ethdev->chip_id;
5184
5185         cp->cnic_ops = &cnic_bnx2_ops;
5186         cp->start_hw = cnic_start_bnx2_hw;
5187         cp->stop_hw = cnic_stop_bnx2_hw;
5188         cp->setup_pgtbl = cnic_setup_page_tbl;
5189         cp->alloc_resc = cnic_alloc_bnx2_resc;
5190         cp->free_resc = cnic_free_resc;
5191         cp->start_cm = cnic_cm_init_bnx2_hw;
5192         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5193         cp->enable_int = cnic_enable_bnx2_int;
5194         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5195         cp->close_conn = cnic_close_bnx2_conn;
5196         cp->next_idx = cnic_bnx2_next_idx;
5197         cp->hw_idx = cnic_bnx2_hw_idx;
5198         return cdev;
5199
5200 cnic_err:
5201         dev_put(dev);
5202         return NULL;
5203 }
5204
5205 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5206 {
5207         struct pci_dev *pdev;
5208         struct cnic_dev *cdev;
5209         struct cnic_local *cp;
5210         struct cnic_eth_dev *ethdev = NULL;
5211         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5212
5213         probe = symbol_get(bnx2x_cnic_probe);
5214         if (probe) {
5215                 ethdev = (*probe)(dev);
5216                 symbol_put(bnx2x_cnic_probe);
5217         }
5218         if (!ethdev)
5219                 return NULL;
5220
5221         pdev = ethdev->pdev;
5222         if (!pdev)
5223                 return NULL;
5224
5225         dev_hold(dev);
5226         cdev = cnic_alloc_dev(dev, pdev);
5227         if (cdev == NULL) {
5228                 dev_put(dev);
5229                 return NULL;
5230         }
5231
5232         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5233         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5234
5235         cp = cdev->cnic_priv;
5236         cp->ethdev = ethdev;
5237         cdev->pcidev = pdev;
5238         cp->chip_id = ethdev->chip_id;
5239
5240         if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5241                 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5242         if (BNX2X_CHIP_IS_E2(cp->chip_id) &&
5243             !(ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE))
5244                 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5245
5246         memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);
5247
5248         cp->cnic_ops = &cnic_bnx2x_ops;
5249         cp->start_hw = cnic_start_bnx2x_hw;
5250         cp->stop_hw = cnic_stop_bnx2x_hw;
5251         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5252         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5253         cp->free_resc = cnic_free_resc;
5254         cp->start_cm = cnic_cm_init_bnx2x_hw;
5255         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5256         cp->enable_int = cnic_enable_bnx2x_int;
5257         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5258         if (BNX2X_CHIP_IS_E2(cp->chip_id))
5259                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5260         else
5261                 cp->ack_int = cnic_ack_bnx2x_msix;
5262         cp->close_conn = cnic_close_bnx2x_conn;
5263         cp->next_idx = cnic_bnx2x_next_idx;
5264         cp->hw_idx = cnic_bnx2x_hw_idx;
5265         return cdev;
5266 }
5267
5268 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5269 {
5270         struct ethtool_drvinfo drvinfo;
5271         struct cnic_dev *cdev = NULL;
5272
5273         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5274                 memset(&drvinfo, 0, sizeof(drvinfo));
5275                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5276
5277                 if (!strcmp(drvinfo.driver, "bnx2"))
5278                         cdev = init_bnx2_cnic(dev);
5279                 if (!strcmp(drvinfo.driver, "bnx2x"))
5280                         cdev = init_bnx2x_cnic(dev);
5281                 if (cdev) {
5282                         write_lock(&cnic_dev_lock);
5283                         list_add(&cdev->list, &cnic_dev_list);
5284                         write_unlock(&cnic_dev_lock);
5285                 }
5286         }
5287         return cdev;
5288 }
5289
5290 /**
5291  * netdev event handler
5292  */
5293 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5294                                                          void *ptr)
5295 {
5296         struct net_device *netdev = ptr;
5297         struct cnic_dev *dev;
5298         int if_type;
5299         int new_dev = 0;
5300
5301         dev = cnic_from_netdev(netdev);
5302
5303         if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
5304                 /* Check for the hot-plug device */
5305                 dev = is_cnic_dev(netdev);
5306                 if (dev) {
5307                         new_dev = 1;
5308                         cnic_hold(dev);
5309                 }
5310         }
5311         if (dev) {
5312                 struct cnic_local *cp = dev->cnic_priv;
5313
5314                 if (new_dev)
5315                         cnic_ulp_init(dev);
5316                 else if (event == NETDEV_UNREGISTER)
5317                         cnic_ulp_exit(dev);
5318
5319                 if (event == NETDEV_UP) {
5320                         if (cnic_register_netdev(dev) != 0) {
5321                                 cnic_put(dev);
5322                                 goto done;
5323                         }
5324                         if (!cnic_start_hw(dev))
5325                                 cnic_ulp_start(dev);
5326                 }
5327
5328                 rcu_read_lock();
5329                 for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5330                         struct cnic_ulp_ops *ulp_ops;
5331                         void *ctx;
5332
5333                         ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
5334                         if (!ulp_ops || !ulp_ops->indicate_netevent)
5335                                 continue;
5336
5337                         ctx = cp->ulp_handle[if_type];
5338
5339                         ulp_ops->indicate_netevent(ctx, event);
5340                 }
5341                 rcu_read_unlock();
5342
5343                 if (event == NETDEV_GOING_DOWN) {
5344                         cnic_ulp_stop(dev);
5345                         cnic_stop_hw(dev);
5346                         cnic_unregister_netdev(dev);
5347                 } else if (event == NETDEV_UNREGISTER) {
5348                         write_lock(&cnic_dev_lock);
5349                         list_del_init(&dev->list);
5350                         write_unlock(&cnic_dev_lock);
5351
5352                         cnic_put(dev);
5353                         cnic_free_dev(dev);
5354                         goto done;
5355                 }
5356                 cnic_put(dev);
5357         }
5358 done:
5359         return NOTIFY_DONE;
5360 }
5361
5362 static struct notifier_block cnic_netdev_notifier = {
5363         .notifier_call = cnic_netdev_event
5364 };
5365
5366 static void cnic_release(void)
5367 {
5368         struct cnic_dev *dev;
5369         struct cnic_uio_dev *udev;
5370
5371         while (!list_empty(&cnic_dev_list)) {
5372                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
5373                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5374                         cnic_ulp_stop(dev);
5375                         cnic_stop_hw(dev);
5376                 }
5377
5378                 cnic_ulp_exit(dev);
5379                 cnic_unregister_netdev(dev);
5380                 list_del_init(&dev->list);
5381                 cnic_free_dev(dev);
5382         }
5383         while (!list_empty(&cnic_udev_list)) {
5384                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5385                                   list);
5386                 cnic_free_uio(udev);
5387         }
5388 }
5389
5390 static int __init cnic_init(void)
5391 {
5392         int rc = 0;
5393
5394         pr_info("%s", version);
5395
5396         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5397         if (rc) {
5398                 cnic_release();
5399                 return rc;
5400         }
5401
5402         cnic_wq = create_singlethread_workqueue("cnic_wq");
5403         if (!cnic_wq) {
5404                 cnic_release();
5405                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5406                 return -ENOMEM;
5407         }
5408
5409         return 0;
5410 }
5411
5412 static void __exit cnic_exit(void)
5413 {
5414         unregister_netdevice_notifier(&cnic_netdev_notifier);
5415         cnic_release();
5416         destroy_workqueue(cnic_wq);
5417 }
5418
5419 module_init(cnic_init);
5420 module_exit(cnic_exit);