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[linux-2.6.git] / drivers / net / cnic.c
1 /* cnic.c: Broadcom CNIC core network driver.
2  *
3  * Copyright (c) 2006-2011 Broadcom Corporation
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation.
8  *
9  * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
10  * Modified and maintained by: Michael Chan <mchan@broadcom.com>
11  */
12
13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
14
15 #include <linux/module.h>
16
17 #include <linux/kernel.h>
18 #include <linux/errno.h>
19 #include <linux/list.h>
20 #include <linux/slab.h>
21 #include <linux/pci.h>
22 #include <linux/init.h>
23 #include <linux/netdevice.h>
24 #include <linux/uio_driver.h>
25 #include <linux/in.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/delay.h>
28 #include <linux/ethtool.h>
29 #include <linux/if_vlan.h>
30 #include <linux/prefetch.h>
31 #include <linux/random.h>
32 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
33 #define BCM_VLAN 1
34 #endif
35 #include <net/ip.h>
36 #include <net/tcp.h>
37 #include <net/route.h>
38 #include <net/ipv6.h>
39 #include <net/ip6_route.h>
40 #include <net/ip6_checksum.h>
41 #include <scsi/iscsi_if.h>
42
43 #include "cnic_if.h"
44 #include "bnx2.h"
45 #include "bnx2x/bnx2x_reg.h"
46 #include "bnx2x/bnx2x_fw_defs.h"
47 #include "bnx2x/bnx2x_hsi.h"
48 #include "../scsi/bnx2i/57xx_iscsi_constants.h"
49 #include "../scsi/bnx2i/57xx_iscsi_hsi.h"
50 #include "cnic.h"
51 #include "cnic_defs.h"
52
53 #define DRV_MODULE_NAME         "cnic"
54
55 static char version[] __devinitdata =
56         "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
57
58 MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
59               "Chen (zongxi@broadcom.com");
60 MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
61 MODULE_LICENSE("GPL");
62 MODULE_VERSION(CNIC_MODULE_VERSION);
63
64 /* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
65 static LIST_HEAD(cnic_dev_list);
66 static LIST_HEAD(cnic_udev_list);
67 static DEFINE_RWLOCK(cnic_dev_lock);
68 static DEFINE_MUTEX(cnic_lock);
69
70 static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
71
72 /* helper function, assuming cnic_lock is held */
73 static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
74 {
75         return rcu_dereference_protected(cnic_ulp_tbl[type],
76                                          lockdep_is_held(&cnic_lock));
77 }
78
79 static int cnic_service_bnx2(void *, void *);
80 static int cnic_service_bnx2x(void *, void *);
81 static int cnic_ctl(void *, struct cnic_ctl_info *);
82
83 static struct cnic_ops cnic_bnx2_ops = {
84         .cnic_owner     = THIS_MODULE,
85         .cnic_handler   = cnic_service_bnx2,
86         .cnic_ctl       = cnic_ctl,
87 };
88
89 static struct cnic_ops cnic_bnx2x_ops = {
90         .cnic_owner     = THIS_MODULE,
91         .cnic_handler   = cnic_service_bnx2x,
92         .cnic_ctl       = cnic_ctl,
93 };
94
95 static struct workqueue_struct *cnic_wq;
96
97 static void cnic_shutdown_rings(struct cnic_dev *);
98 static void cnic_init_rings(struct cnic_dev *);
99 static int cnic_cm_set_pg(struct cnic_sock *);
100
101 static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
102 {
103         struct cnic_uio_dev *udev = uinfo->priv;
104         struct cnic_dev *dev;
105
106         if (!capable(CAP_NET_ADMIN))
107                 return -EPERM;
108
109         if (udev->uio_dev != -1)
110                 return -EBUSY;
111
112         rtnl_lock();
113         dev = udev->dev;
114
115         if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
116                 rtnl_unlock();
117                 return -ENODEV;
118         }
119
120         udev->uio_dev = iminor(inode);
121
122         cnic_shutdown_rings(dev);
123         cnic_init_rings(dev);
124         rtnl_unlock();
125
126         return 0;
127 }
128
129 static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
130 {
131         struct cnic_uio_dev *udev = uinfo->priv;
132
133         udev->uio_dev = -1;
134         return 0;
135 }
136
137 static inline void cnic_hold(struct cnic_dev *dev)
138 {
139         atomic_inc(&dev->ref_count);
140 }
141
142 static inline void cnic_put(struct cnic_dev *dev)
143 {
144         atomic_dec(&dev->ref_count);
145 }
146
147 static inline void csk_hold(struct cnic_sock *csk)
148 {
149         atomic_inc(&csk->ref_count);
150 }
151
152 static inline void csk_put(struct cnic_sock *csk)
153 {
154         atomic_dec(&csk->ref_count);
155 }
156
157 static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
158 {
159         struct cnic_dev *cdev;
160
161         read_lock(&cnic_dev_lock);
162         list_for_each_entry(cdev, &cnic_dev_list, list) {
163                 if (netdev == cdev->netdev) {
164                         cnic_hold(cdev);
165                         read_unlock(&cnic_dev_lock);
166                         return cdev;
167                 }
168         }
169         read_unlock(&cnic_dev_lock);
170         return NULL;
171 }
172
173 static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
174 {
175         atomic_inc(&ulp_ops->ref_count);
176 }
177
178 static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
179 {
180         atomic_dec(&ulp_ops->ref_count);
181 }
182
183 static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
184 {
185         struct cnic_local *cp = dev->cnic_priv;
186         struct cnic_eth_dev *ethdev = cp->ethdev;
187         struct drv_ctl_info info;
188         struct drv_ctl_io *io = &info.data.io;
189
190         info.cmd = DRV_CTL_CTX_WR_CMD;
191         io->cid_addr = cid_addr;
192         io->offset = off;
193         io->data = val;
194         ethdev->drv_ctl(dev->netdev, &info);
195 }
196
197 static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
198 {
199         struct cnic_local *cp = dev->cnic_priv;
200         struct cnic_eth_dev *ethdev = cp->ethdev;
201         struct drv_ctl_info info;
202         struct drv_ctl_io *io = &info.data.io;
203
204         info.cmd = DRV_CTL_CTXTBL_WR_CMD;
205         io->offset = off;
206         io->dma_addr = addr;
207         ethdev->drv_ctl(dev->netdev, &info);
208 }
209
210 static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
211 {
212         struct cnic_local *cp = dev->cnic_priv;
213         struct cnic_eth_dev *ethdev = cp->ethdev;
214         struct drv_ctl_info info;
215         struct drv_ctl_l2_ring *ring = &info.data.ring;
216
217         if (start)
218                 info.cmd = DRV_CTL_START_L2_CMD;
219         else
220                 info.cmd = DRV_CTL_STOP_L2_CMD;
221
222         ring->cid = cid;
223         ring->client_id = cl_id;
224         ethdev->drv_ctl(dev->netdev, &info);
225 }
226
227 static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
228 {
229         struct cnic_local *cp = dev->cnic_priv;
230         struct cnic_eth_dev *ethdev = cp->ethdev;
231         struct drv_ctl_info info;
232         struct drv_ctl_io *io = &info.data.io;
233
234         info.cmd = DRV_CTL_IO_WR_CMD;
235         io->offset = off;
236         io->data = val;
237         ethdev->drv_ctl(dev->netdev, &info);
238 }
239
240 static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
241 {
242         struct cnic_local *cp = dev->cnic_priv;
243         struct cnic_eth_dev *ethdev = cp->ethdev;
244         struct drv_ctl_info info;
245         struct drv_ctl_io *io = &info.data.io;
246
247         info.cmd = DRV_CTL_IO_RD_CMD;
248         io->offset = off;
249         ethdev->drv_ctl(dev->netdev, &info);
250         return io->data;
251 }
252
253 static int cnic_in_use(struct cnic_sock *csk)
254 {
255         return test_bit(SK_F_INUSE, &csk->flags);
256 }
257
258 static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
259 {
260         struct cnic_local *cp = dev->cnic_priv;
261         struct cnic_eth_dev *ethdev = cp->ethdev;
262         struct drv_ctl_info info;
263
264         info.cmd = cmd;
265         info.data.credit.credit_count = count;
266         ethdev->drv_ctl(dev->netdev, &info);
267 }
268
269 static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
270 {
271         u32 i;
272
273         for (i = 0; i < cp->max_cid_space; i++) {
274                 if (cp->ctx_tbl[i].cid == cid) {
275                         *l5_cid = i;
276                         return 0;
277                 }
278         }
279         return -EINVAL;
280 }
281
282 static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
283                            struct cnic_sock *csk)
284 {
285         struct iscsi_path path_req;
286         char *buf = NULL;
287         u16 len = 0;
288         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
289         struct cnic_ulp_ops *ulp_ops;
290         struct cnic_uio_dev *udev = cp->udev;
291         int rc = 0, retry = 0;
292
293         if (!udev || udev->uio_dev == -1)
294                 return -ENODEV;
295
296         if (csk) {
297                 len = sizeof(path_req);
298                 buf = (char *) &path_req;
299                 memset(&path_req, 0, len);
300
301                 msg_type = ISCSI_KEVENT_PATH_REQ;
302                 path_req.handle = (u64) csk->l5_cid;
303                 if (test_bit(SK_F_IPV6, &csk->flags)) {
304                         memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
305                                sizeof(struct in6_addr));
306                         path_req.ip_addr_len = 16;
307                 } else {
308                         memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
309                                sizeof(struct in_addr));
310                         path_req.ip_addr_len = 4;
311                 }
312                 path_req.vlan_id = csk->vlan_id;
313                 path_req.pmtu = csk->mtu;
314         }
315
316         while (retry < 3) {
317                 rc = 0;
318                 rcu_read_lock();
319                 ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
320                 if (ulp_ops)
321                         rc = ulp_ops->iscsi_nl_send_msg(
322                                 cp->ulp_handle[CNIC_ULP_ISCSI],
323                                 msg_type, buf, len);
324                 rcu_read_unlock();
325                 if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
326                         break;
327
328                 msleep(100);
329                 retry++;
330         }
331         return rc;
332 }
333
334 static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
335
336 static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
337                                   char *buf, u16 len)
338 {
339         int rc = -EINVAL;
340
341         switch (msg_type) {
342         case ISCSI_UEVENT_PATH_UPDATE: {
343                 struct cnic_local *cp;
344                 u32 l5_cid;
345                 struct cnic_sock *csk;
346                 struct iscsi_path *path_resp;
347
348                 if (len < sizeof(*path_resp))
349                         break;
350
351                 path_resp = (struct iscsi_path *) buf;
352                 cp = dev->cnic_priv;
353                 l5_cid = (u32) path_resp->handle;
354                 if (l5_cid >= MAX_CM_SK_TBL_SZ)
355                         break;
356
357                 rcu_read_lock();
358                 if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
359                         rc = -ENODEV;
360                         rcu_read_unlock();
361                         break;
362                 }
363                 csk = &cp->csk_tbl[l5_cid];
364                 csk_hold(csk);
365                 if (cnic_in_use(csk) &&
366                     test_bit(SK_F_CONNECT_START, &csk->flags)) {
367
368                         memcpy(csk->ha, path_resp->mac_addr, 6);
369                         if (test_bit(SK_F_IPV6, &csk->flags))
370                                 memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
371                                        sizeof(struct in6_addr));
372                         else
373                                 memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
374                                        sizeof(struct in_addr));
375
376                         if (is_valid_ether_addr(csk->ha)) {
377                                 cnic_cm_set_pg(csk);
378                         } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
379                                 !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
380
381                                 cnic_cm_upcall(cp, csk,
382                                         L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
383                                 clear_bit(SK_F_CONNECT_START, &csk->flags);
384                         }
385                 }
386                 csk_put(csk);
387                 rcu_read_unlock();
388                 rc = 0;
389         }
390         }
391
392         return rc;
393 }
394
395 static int cnic_offld_prep(struct cnic_sock *csk)
396 {
397         if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
398                 return 0;
399
400         if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
401                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
402                 return 0;
403         }
404
405         return 1;
406 }
407
408 static int cnic_close_prep(struct cnic_sock *csk)
409 {
410         clear_bit(SK_F_CONNECT_START, &csk->flags);
411         smp_mb__after_clear_bit();
412
413         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
414                 while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
415                         msleep(1);
416
417                 return 1;
418         }
419         return 0;
420 }
421
422 static int cnic_abort_prep(struct cnic_sock *csk)
423 {
424         clear_bit(SK_F_CONNECT_START, &csk->flags);
425         smp_mb__after_clear_bit();
426
427         while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
428                 msleep(1);
429
430         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
431                 csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
432                 return 1;
433         }
434
435         return 0;
436 }
437
438 int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
439 {
440         struct cnic_dev *dev;
441
442         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
443                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
444                 return -EINVAL;
445         }
446         mutex_lock(&cnic_lock);
447         if (cnic_ulp_tbl_prot(ulp_type)) {
448                 pr_err("%s: Type %d has already been registered\n",
449                        __func__, ulp_type);
450                 mutex_unlock(&cnic_lock);
451                 return -EBUSY;
452         }
453
454         read_lock(&cnic_dev_lock);
455         list_for_each_entry(dev, &cnic_dev_list, list) {
456                 struct cnic_local *cp = dev->cnic_priv;
457
458                 clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
459         }
460         read_unlock(&cnic_dev_lock);
461
462         atomic_set(&ulp_ops->ref_count, 0);
463         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
464         mutex_unlock(&cnic_lock);
465
466         /* Prevent race conditions with netdev_event */
467         rtnl_lock();
468         list_for_each_entry(dev, &cnic_dev_list, list) {
469                 struct cnic_local *cp = dev->cnic_priv;
470
471                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
472                         ulp_ops->cnic_init(dev);
473         }
474         rtnl_unlock();
475
476         return 0;
477 }
478
479 int cnic_unregister_driver(int ulp_type)
480 {
481         struct cnic_dev *dev;
482         struct cnic_ulp_ops *ulp_ops;
483         int i = 0;
484
485         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
486                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
487                 return -EINVAL;
488         }
489         mutex_lock(&cnic_lock);
490         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
491         if (!ulp_ops) {
492                 pr_err("%s: Type %d has not been registered\n",
493                        __func__, ulp_type);
494                 goto out_unlock;
495         }
496         read_lock(&cnic_dev_lock);
497         list_for_each_entry(dev, &cnic_dev_list, list) {
498                 struct cnic_local *cp = dev->cnic_priv;
499
500                 if (rcu_dereference(cp->ulp_ops[ulp_type])) {
501                         pr_err("%s: Type %d still has devices registered\n",
502                                __func__, ulp_type);
503                         read_unlock(&cnic_dev_lock);
504                         goto out_unlock;
505                 }
506         }
507         read_unlock(&cnic_dev_lock);
508
509         rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
510
511         mutex_unlock(&cnic_lock);
512         synchronize_rcu();
513         while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
514                 msleep(100);
515                 i++;
516         }
517
518         if (atomic_read(&ulp_ops->ref_count) != 0)
519                 netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
520         return 0;
521
522 out_unlock:
523         mutex_unlock(&cnic_lock);
524         return -EINVAL;
525 }
526
527 static int cnic_start_hw(struct cnic_dev *);
528 static void cnic_stop_hw(struct cnic_dev *);
529
530 static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
531                                 void *ulp_ctx)
532 {
533         struct cnic_local *cp = dev->cnic_priv;
534         struct cnic_ulp_ops *ulp_ops;
535
536         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
537                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
538                 return -EINVAL;
539         }
540         mutex_lock(&cnic_lock);
541         if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
542                 pr_err("%s: Driver with type %d has not been registered\n",
543                        __func__, ulp_type);
544                 mutex_unlock(&cnic_lock);
545                 return -EAGAIN;
546         }
547         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
548                 pr_err("%s: Type %d has already been registered to this device\n",
549                        __func__, ulp_type);
550                 mutex_unlock(&cnic_lock);
551                 return -EBUSY;
552         }
553
554         clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
555         cp->ulp_handle[ulp_type] = ulp_ctx;
556         ulp_ops = cnic_ulp_tbl_prot(ulp_type);
557         rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
558         cnic_hold(dev);
559
560         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
561                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
562                         ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
563
564         mutex_unlock(&cnic_lock);
565
566         return 0;
567
568 }
569 EXPORT_SYMBOL(cnic_register_driver);
570
571 static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
572 {
573         struct cnic_local *cp = dev->cnic_priv;
574         int i = 0;
575
576         if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
577                 pr_err("%s: Bad type %d\n", __func__, ulp_type);
578                 return -EINVAL;
579         }
580         mutex_lock(&cnic_lock);
581         if (rcu_dereference(cp->ulp_ops[ulp_type])) {
582                 rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
583                 cnic_put(dev);
584         } else {
585                 pr_err("%s: device not registered to this ulp type %d\n",
586                        __func__, ulp_type);
587                 mutex_unlock(&cnic_lock);
588                 return -EINVAL;
589         }
590         mutex_unlock(&cnic_lock);
591
592         if (ulp_type == CNIC_ULP_ISCSI)
593                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
594
595         synchronize_rcu();
596
597         while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
598                i < 20) {
599                 msleep(100);
600                 i++;
601         }
602         if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
603                 netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
604
605         return 0;
606 }
607 EXPORT_SYMBOL(cnic_unregister_driver);
608
609 static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
610                             u32 next)
611 {
612         id_tbl->start = start_id;
613         id_tbl->max = size;
614         id_tbl->next = next;
615         spin_lock_init(&id_tbl->lock);
616         id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
617         if (!id_tbl->table)
618                 return -ENOMEM;
619
620         return 0;
621 }
622
623 static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
624 {
625         kfree(id_tbl->table);
626         id_tbl->table = NULL;
627 }
628
629 static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
630 {
631         int ret = -1;
632
633         id -= id_tbl->start;
634         if (id >= id_tbl->max)
635                 return ret;
636
637         spin_lock(&id_tbl->lock);
638         if (!test_bit(id, id_tbl->table)) {
639                 set_bit(id, id_tbl->table);
640                 ret = 0;
641         }
642         spin_unlock(&id_tbl->lock);
643         return ret;
644 }
645
646 /* Returns -1 if not successful */
647 static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
648 {
649         u32 id;
650
651         spin_lock(&id_tbl->lock);
652         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
653         if (id >= id_tbl->max) {
654                 id = -1;
655                 if (id_tbl->next != 0) {
656                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
657                         if (id >= id_tbl->next)
658                                 id = -1;
659                 }
660         }
661
662         if (id < id_tbl->max) {
663                 set_bit(id, id_tbl->table);
664                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
665                 id += id_tbl->start;
666         }
667
668         spin_unlock(&id_tbl->lock);
669
670         return id;
671 }
672
673 static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
674 {
675         if (id == -1)
676                 return;
677
678         id -= id_tbl->start;
679         if (id >= id_tbl->max)
680                 return;
681
682         clear_bit(id, id_tbl->table);
683 }
684
685 static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
686 {
687         int i;
688
689         if (!dma->pg_arr)
690                 return;
691
692         for (i = 0; i < dma->num_pages; i++) {
693                 if (dma->pg_arr[i]) {
694                         dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
695                                           dma->pg_arr[i], dma->pg_map_arr[i]);
696                         dma->pg_arr[i] = NULL;
697                 }
698         }
699         if (dma->pgtbl) {
700                 dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
701                                   dma->pgtbl, dma->pgtbl_map);
702                 dma->pgtbl = NULL;
703         }
704         kfree(dma->pg_arr);
705         dma->pg_arr = NULL;
706         dma->num_pages = 0;
707 }
708
709 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
710 {
711         int i;
712         __le32 *page_table = (__le32 *) dma->pgtbl;
713
714         for (i = 0; i < dma->num_pages; i++) {
715                 /* Each entry needs to be in big endian format. */
716                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
717                 page_table++;
718                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
719                 page_table++;
720         }
721 }
722
723 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
724 {
725         int i;
726         __le32 *page_table = (__le32 *) dma->pgtbl;
727
728         for (i = 0; i < dma->num_pages; i++) {
729                 /* Each entry needs to be in little endian format. */
730                 *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
731                 page_table++;
732                 *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
733                 page_table++;
734         }
735 }
736
737 static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
738                           int pages, int use_pg_tbl)
739 {
740         int i, size;
741         struct cnic_local *cp = dev->cnic_priv;
742
743         size = pages * (sizeof(void *) + sizeof(dma_addr_t));
744         dma->pg_arr = kzalloc(size, GFP_ATOMIC);
745         if (dma->pg_arr == NULL)
746                 return -ENOMEM;
747
748         dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
749         dma->num_pages = pages;
750
751         for (i = 0; i < pages; i++) {
752                 dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
753                                                     BCM_PAGE_SIZE,
754                                                     &dma->pg_map_arr[i],
755                                                     GFP_ATOMIC);
756                 if (dma->pg_arr[i] == NULL)
757                         goto error;
758         }
759         if (!use_pg_tbl)
760                 return 0;
761
762         dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
763                           ~(BCM_PAGE_SIZE - 1);
764         dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
765                                         &dma->pgtbl_map, GFP_ATOMIC);
766         if (dma->pgtbl == NULL)
767                 goto error;
768
769         cp->setup_pgtbl(dev, dma);
770
771         return 0;
772
773 error:
774         cnic_free_dma(dev, dma);
775         return -ENOMEM;
776 }
777
778 static void cnic_free_context(struct cnic_dev *dev)
779 {
780         struct cnic_local *cp = dev->cnic_priv;
781         int i;
782
783         for (i = 0; i < cp->ctx_blks; i++) {
784                 if (cp->ctx_arr[i].ctx) {
785                         dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
786                                           cp->ctx_arr[i].ctx,
787                                           cp->ctx_arr[i].mapping);
788                         cp->ctx_arr[i].ctx = NULL;
789                 }
790         }
791 }
792
793 static void __cnic_free_uio(struct cnic_uio_dev *udev)
794 {
795         uio_unregister_device(&udev->cnic_uinfo);
796
797         if (udev->l2_buf) {
798                 dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
799                                   udev->l2_buf, udev->l2_buf_map);
800                 udev->l2_buf = NULL;
801         }
802
803         if (udev->l2_ring) {
804                 dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
805                                   udev->l2_ring, udev->l2_ring_map);
806                 udev->l2_ring = NULL;
807         }
808
809         pci_dev_put(udev->pdev);
810         kfree(udev);
811 }
812
813 static void cnic_free_uio(struct cnic_uio_dev *udev)
814 {
815         if (!udev)
816                 return;
817
818         write_lock(&cnic_dev_lock);
819         list_del_init(&udev->list);
820         write_unlock(&cnic_dev_lock);
821         __cnic_free_uio(udev);
822 }
823
824 static void cnic_free_resc(struct cnic_dev *dev)
825 {
826         struct cnic_local *cp = dev->cnic_priv;
827         struct cnic_uio_dev *udev = cp->udev;
828
829         if (udev) {
830                 udev->dev = NULL;
831                 cp->udev = NULL;
832         }
833
834         cnic_free_context(dev);
835         kfree(cp->ctx_arr);
836         cp->ctx_arr = NULL;
837         cp->ctx_blks = 0;
838
839         cnic_free_dma(dev, &cp->gbl_buf_info);
840         cnic_free_dma(dev, &cp->kwq_info);
841         cnic_free_dma(dev, &cp->kwq_16_data_info);
842         cnic_free_dma(dev, &cp->kcq2.dma);
843         cnic_free_dma(dev, &cp->kcq1.dma);
844         kfree(cp->iscsi_tbl);
845         cp->iscsi_tbl = NULL;
846         kfree(cp->ctx_tbl);
847         cp->ctx_tbl = NULL;
848
849         cnic_free_id_tbl(&cp->fcoe_cid_tbl);
850         cnic_free_id_tbl(&cp->cid_tbl);
851 }
852
853 static int cnic_alloc_context(struct cnic_dev *dev)
854 {
855         struct cnic_local *cp = dev->cnic_priv;
856
857         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
858                 int i, k, arr_size;
859
860                 cp->ctx_blk_size = BCM_PAGE_SIZE;
861                 cp->cids_per_blk = BCM_PAGE_SIZE / 128;
862                 arr_size = BNX2_MAX_CID / cp->cids_per_blk *
863                            sizeof(struct cnic_ctx);
864                 cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
865                 if (cp->ctx_arr == NULL)
866                         return -ENOMEM;
867
868                 k = 0;
869                 for (i = 0; i < 2; i++) {
870                         u32 j, reg, off, lo, hi;
871
872                         if (i == 0)
873                                 off = BNX2_PG_CTX_MAP;
874                         else
875                                 off = BNX2_ISCSI_CTX_MAP;
876
877                         reg = cnic_reg_rd_ind(dev, off);
878                         lo = reg >> 16;
879                         hi = reg & 0xffff;
880                         for (j = lo; j < hi; j += cp->cids_per_blk, k++)
881                                 cp->ctx_arr[k].cid = j;
882                 }
883
884                 cp->ctx_blks = k;
885                 if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
886                         cp->ctx_blks = 0;
887                         return -ENOMEM;
888                 }
889
890                 for (i = 0; i < cp->ctx_blks; i++) {
891                         cp->ctx_arr[i].ctx =
892                                 dma_alloc_coherent(&dev->pcidev->dev,
893                                                    BCM_PAGE_SIZE,
894                                                    &cp->ctx_arr[i].mapping,
895                                                    GFP_KERNEL);
896                         if (cp->ctx_arr[i].ctx == NULL)
897                                 return -ENOMEM;
898                 }
899         }
900         return 0;
901 }
902
903 static u16 cnic_bnx2_next_idx(u16 idx)
904 {
905         return idx + 1;
906 }
907
908 static u16 cnic_bnx2_hw_idx(u16 idx)
909 {
910         return idx;
911 }
912
913 static u16 cnic_bnx2x_next_idx(u16 idx)
914 {
915         idx++;
916         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
917                 idx++;
918
919         return idx;
920 }
921
922 static u16 cnic_bnx2x_hw_idx(u16 idx)
923 {
924         if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
925                 idx++;
926         return idx;
927 }
928
929 static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
930                           bool use_pg_tbl)
931 {
932         int err, i, use_page_tbl = 0;
933         struct kcqe **kcq;
934
935         if (use_pg_tbl)
936                 use_page_tbl = 1;
937
938         err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
939         if (err)
940                 return err;
941
942         kcq = (struct kcqe **) info->dma.pg_arr;
943         info->kcq = kcq;
944
945         info->next_idx = cnic_bnx2_next_idx;
946         info->hw_idx = cnic_bnx2_hw_idx;
947         if (use_pg_tbl)
948                 return 0;
949
950         info->next_idx = cnic_bnx2x_next_idx;
951         info->hw_idx = cnic_bnx2x_hw_idx;
952
953         for (i = 0; i < KCQ_PAGE_CNT; i++) {
954                 struct bnx2x_bd_chain_next *next =
955                         (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
956                 int j = i + 1;
957
958                 if (j >= KCQ_PAGE_CNT)
959                         j = 0;
960                 next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
961                 next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
962         }
963         return 0;
964 }
965
966 static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
967 {
968         struct cnic_local *cp = dev->cnic_priv;
969         struct cnic_uio_dev *udev;
970
971         read_lock(&cnic_dev_lock);
972         list_for_each_entry(udev, &cnic_udev_list, list) {
973                 if (udev->pdev == dev->pcidev) {
974                         udev->dev = dev;
975                         cp->udev = udev;
976                         read_unlock(&cnic_dev_lock);
977                         return 0;
978                 }
979         }
980         read_unlock(&cnic_dev_lock);
981
982         udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
983         if (!udev)
984                 return -ENOMEM;
985
986         udev->uio_dev = -1;
987
988         udev->dev = dev;
989         udev->pdev = dev->pcidev;
990         udev->l2_ring_size = pages * BCM_PAGE_SIZE;
991         udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
992                                            &udev->l2_ring_map,
993                                            GFP_KERNEL | __GFP_COMP);
994         if (!udev->l2_ring)
995                 goto err_udev;
996
997         udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
998         udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
999         udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
1000                                           &udev->l2_buf_map,
1001                                           GFP_KERNEL | __GFP_COMP);
1002         if (!udev->l2_buf)
1003                 goto err_dma;
1004
1005         write_lock(&cnic_dev_lock);
1006         list_add(&udev->list, &cnic_udev_list);
1007         write_unlock(&cnic_dev_lock);
1008
1009         pci_dev_get(udev->pdev);
1010
1011         cp->udev = udev;
1012
1013         return 0;
1014  err_dma:
1015         dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
1016                           udev->l2_ring, udev->l2_ring_map);
1017  err_udev:
1018         kfree(udev);
1019         return -ENOMEM;
1020 }
1021
1022 static int cnic_init_uio(struct cnic_dev *dev)
1023 {
1024         struct cnic_local *cp = dev->cnic_priv;
1025         struct cnic_uio_dev *udev = cp->udev;
1026         struct uio_info *uinfo;
1027         int ret = 0;
1028
1029         if (!udev)
1030                 return -ENOMEM;
1031
1032         uinfo = &udev->cnic_uinfo;
1033
1034         uinfo->mem[0].addr = dev->netdev->base_addr;
1035         uinfo->mem[0].internal_addr = dev->regview;
1036         uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
1037         uinfo->mem[0].memtype = UIO_MEM_PHYS;
1038
1039         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1040                 uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
1041                                         PAGE_MASK;
1042                 if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
1043                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
1044                 else
1045                         uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
1046
1047                 uinfo->name = "bnx2_cnic";
1048         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
1049                 uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
1050                         PAGE_MASK;
1051                 uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1052
1053                 uinfo->name = "bnx2x_cnic";
1054         }
1055
1056         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
1057
1058         uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
1059         uinfo->mem[2].size = udev->l2_ring_size;
1060         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
1061
1062         uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
1063         uinfo->mem[3].size = udev->l2_buf_size;
1064         uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
1065
1066         uinfo->version = CNIC_MODULE_VERSION;
1067         uinfo->irq = UIO_IRQ_CUSTOM;
1068
1069         uinfo->open = cnic_uio_open;
1070         uinfo->release = cnic_uio_close;
1071
1072         if (udev->uio_dev == -1) {
1073                 if (!uinfo->priv) {
1074                         uinfo->priv = udev;
1075
1076                         ret = uio_register_device(&udev->pdev->dev, uinfo);
1077                 }
1078         } else {
1079                 cnic_init_rings(dev);
1080         }
1081
1082         return ret;
1083 }
1084
1085 static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
1086 {
1087         struct cnic_local *cp = dev->cnic_priv;
1088         int ret;
1089
1090         ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
1091         if (ret)
1092                 goto error;
1093         cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
1094
1095         ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1096         if (ret)
1097                 goto error;
1098
1099         ret = cnic_alloc_context(dev);
1100         if (ret)
1101                 goto error;
1102
1103         ret = cnic_alloc_uio_rings(dev, 2);
1104         if (ret)
1105                 goto error;
1106
1107         ret = cnic_init_uio(dev);
1108         if (ret)
1109                 goto error;
1110
1111         return 0;
1112
1113 error:
1114         cnic_free_resc(dev);
1115         return ret;
1116 }
1117
1118 static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
1119 {
1120         struct cnic_local *cp = dev->cnic_priv;
1121         int ctx_blk_size = cp->ethdev->ctx_blk_size;
1122         int total_mem, blks, i;
1123
1124         total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1125         blks = total_mem / ctx_blk_size;
1126         if (total_mem % ctx_blk_size)
1127                 blks++;
1128
1129         if (blks > cp->ethdev->ctx_tbl_len)
1130                 return -ENOMEM;
1131
1132         cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1133         if (cp->ctx_arr == NULL)
1134                 return -ENOMEM;
1135
1136         cp->ctx_blks = blks;
1137         cp->ctx_blk_size = ctx_blk_size;
1138         if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1139                 cp->ctx_align = 0;
1140         else
1141                 cp->ctx_align = ctx_blk_size;
1142
1143         cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
1144
1145         for (i = 0; i < blks; i++) {
1146                 cp->ctx_arr[i].ctx =
1147                         dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
1148                                            &cp->ctx_arr[i].mapping,
1149                                            GFP_KERNEL);
1150                 if (cp->ctx_arr[i].ctx == NULL)
1151                         return -ENOMEM;
1152
1153                 if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
1154                         if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
1155                                 cnic_free_context(dev);
1156                                 cp->ctx_blk_size += cp->ctx_align;
1157                                 i = -1;
1158                                 continue;
1159                         }
1160                 }
1161         }
1162         return 0;
1163 }
1164
1165 static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
1166 {
1167         struct cnic_local *cp = dev->cnic_priv;
1168         struct cnic_eth_dev *ethdev = cp->ethdev;
1169         u32 start_cid = ethdev->starting_cid;
1170         int i, j, n, ret, pages;
1171         struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
1172
1173         cp->iro_arr = ethdev->iro_arr;
1174
1175         cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1176         cp->iscsi_start_cid = start_cid;
1177         cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
1178
1179         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1180                 cp->max_cid_space += BNX2X_FCOE_NUM_CONNECTIONS;
1181                 cp->fcoe_init_cid = ethdev->fcoe_init_cid;
1182                 if (!cp->fcoe_init_cid)
1183                         cp->fcoe_init_cid = 0x10;
1184         }
1185
1186         cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
1187                                 GFP_KERNEL);
1188         if (!cp->iscsi_tbl)
1189                 goto error;
1190
1191         cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1192                                 cp->max_cid_space, GFP_KERNEL);
1193         if (!cp->ctx_tbl)
1194                 goto error;
1195
1196         for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
1197                 cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
1198                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
1199         }
1200
1201         for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
1202                 cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
1203
1204         pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1205                 PAGE_SIZE;
1206
1207         ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
1208         if (ret)
1209                 return -ENOMEM;
1210
1211         n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1212         for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1213                 long off = CNIC_KWQ16_DATA_SIZE * (i % n);
1214
1215                 cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
1216                 cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
1217                                                    off;
1218
1219                 if ((i % n) == (n - 1))
1220                         j++;
1221         }
1222
1223         ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1224         if (ret)
1225                 goto error;
1226
1227         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1228                 ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
1229                 if (ret)
1230                         goto error;
1231         }
1232
1233         pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
1234         ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
1235         if (ret)
1236                 goto error;
1237
1238         ret = cnic_alloc_bnx2x_context(dev);
1239         if (ret)
1240                 goto error;
1241
1242         cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
1243
1244         cp->l2_rx_ring_size = 15;
1245
1246         ret = cnic_alloc_uio_rings(dev, 4);
1247         if (ret)
1248                 goto error;
1249
1250         ret = cnic_init_uio(dev);
1251         if (ret)
1252                 goto error;
1253
1254         return 0;
1255
1256 error:
1257         cnic_free_resc(dev);
1258         return -ENOMEM;
1259 }
1260
1261 static inline u32 cnic_kwq_avail(struct cnic_local *cp)
1262 {
1263         return cp->max_kwq_idx -
1264                 ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
1265 }
1266
1267 static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
1268                                   u32 num_wqes)
1269 {
1270         struct cnic_local *cp = dev->cnic_priv;
1271         struct kwqe *prod_qe;
1272         u16 prod, sw_prod, i;
1273
1274         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
1275                 return -EAGAIN;         /* bnx2 is down */
1276
1277         spin_lock_bh(&cp->cnic_ulp_lock);
1278         if (num_wqes > cnic_kwq_avail(cp) &&
1279             !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1280                 spin_unlock_bh(&cp->cnic_ulp_lock);
1281                 return -EAGAIN;
1282         }
1283
1284         clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1285
1286         prod = cp->kwq_prod_idx;
1287         sw_prod = prod & MAX_KWQ_IDX;
1288         for (i = 0; i < num_wqes; i++) {
1289                 prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
1290                 memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
1291                 prod++;
1292                 sw_prod = prod & MAX_KWQ_IDX;
1293         }
1294         cp->kwq_prod_idx = prod;
1295
1296         CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);
1297
1298         spin_unlock_bh(&cp->cnic_ulp_lock);
1299         return 0;
1300 }
1301
1302 static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
1303                                    union l5cm_specific_data *l5_data)
1304 {
1305         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1306         dma_addr_t map;
1307
1308         map = ctx->kwqe_data_mapping;
1309         l5_data->phy_address.lo = (u64) map & 0xffffffff;
1310         l5_data->phy_address.hi = (u64) map >> 32;
1311         return ctx->kwqe_data;
1312 }
1313
1314 static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
1315                                 u32 type, union l5cm_specific_data *l5_data)
1316 {
1317         struct cnic_local *cp = dev->cnic_priv;
1318         struct l5cm_spe kwqe;
1319         struct kwqe_16 *kwq[1];
1320         u16 type_16;
1321         int ret;
1322
1323         kwqe.hdr.conn_and_cmd_data =
1324                 cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1325                              BNX2X_HW_CID(cp, cid)));
1326
1327         type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
1328         type_16 |= (cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
1329                    SPE_HDR_FUNCTION_ID;
1330
1331         kwqe.hdr.type = cpu_to_le16(type_16);
1332         kwqe.hdr.reserved1 = 0;
1333         kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
1334         kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
1335
1336         kwq[0] = (struct kwqe_16 *) &kwqe;
1337
1338         spin_lock_bh(&cp->cnic_ulp_lock);
1339         ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
1340         spin_unlock_bh(&cp->cnic_ulp_lock);
1341
1342         if (ret == 1)
1343                 return 0;
1344
1345         return -EBUSY;
1346 }
1347
1348 static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
1349                                    struct kcqe *cqes[], u32 num_cqes)
1350 {
1351         struct cnic_local *cp = dev->cnic_priv;
1352         struct cnic_ulp_ops *ulp_ops;
1353
1354         rcu_read_lock();
1355         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
1356         if (likely(ulp_ops)) {
1357                 ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
1358                                           cqes, num_cqes);
1359         }
1360         rcu_read_unlock();
1361 }
1362
1363 static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
1364 {
1365         struct cnic_local *cp = dev->cnic_priv;
1366         struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1367         int hq_bds, pages;
1368         u32 pfid = cp->pfid;
1369
1370         cp->num_iscsi_tasks = req1->num_tasks_per_conn;
1371         cp->num_ccells = req1->num_ccells_per_conn;
1372         cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
1373                               cp->num_iscsi_tasks;
1374         cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
1375                         BNX2X_ISCSI_R2TQE_SIZE;
1376         cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
1377         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1378         hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
1379         cp->num_cqs = req1->num_cqs;
1380
1381         if (!dev->max_iscsi_conn)
1382                 return 0;
1383
1384         /* init Tstorm RAM */
1385         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1386                   req1->rq_num_wqes);
1387         CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1388                   PAGE_SIZE);
1389         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1390                  TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1391         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1392                   TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1393                   req1->num_tasks_per_conn);
1394
1395         /* init Ustorm RAM */
1396         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1397                   USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1398                   req1->rq_buffer_size);
1399         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1400                   PAGE_SIZE);
1401         CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1402                  USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1403         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1404                   USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1405                   req1->num_tasks_per_conn);
1406         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1407                   req1->rq_num_wqes);
1408         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1409                   req1->cq_num_wqes);
1410         CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1411                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1412
1413         /* init Xstorm RAM */
1414         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1415                   PAGE_SIZE);
1416         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1417                  XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1418         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1419                   XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1420                   req1->num_tasks_per_conn);
1421         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1422                   hq_bds);
1423         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1424                   req1->num_tasks_per_conn);
1425         CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1426                   cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
1427
1428         /* init Cstorm RAM */
1429         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1430                   PAGE_SIZE);
1431         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1432                  CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1433         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1434                   CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1435                   req1->num_tasks_per_conn);
1436         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1437                   req1->cq_num_wqes);
1438         CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1439                   hq_bds);
1440
1441         return 0;
1442 }
1443
1444 static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
1445 {
1446         struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
1447         struct cnic_local *cp = dev->cnic_priv;
1448         u32 pfid = cp->pfid;
1449         struct iscsi_kcqe kcqe;
1450         struct kcqe *cqes[1];
1451
1452         memset(&kcqe, 0, sizeof(kcqe));
1453         if (!dev->max_iscsi_conn) {
1454                 kcqe.completion_status =
1455                         ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
1456                 goto done;
1457         }
1458
1459         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1460                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1461         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1462                 TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1463                 req2->error_bit_map[1]);
1464
1465         CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1466                   USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1467         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1468                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1469         CNIC_WR(dev, BAR_USTRORM_INTMEM +
1470                 USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1471                 req2->error_bit_map[1]);
1472
1473         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1474                   CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1475
1476         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1477
1478 done:
1479         kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
1480         cqes[0] = (struct kcqe *) &kcqe;
1481         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1482
1483         return 0;
1484 }
1485
1486 static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1487 {
1488         struct cnic_local *cp = dev->cnic_priv;
1489         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1490
1491         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
1492                 struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1493
1494                 cnic_free_dma(dev, &iscsi->hq_info);
1495                 cnic_free_dma(dev, &iscsi->r2tq_info);
1496                 cnic_free_dma(dev, &iscsi->task_array_info);
1497                 cnic_free_id(&cp->cid_tbl, ctx->cid);
1498         } else {
1499                 cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1500         }
1501
1502         ctx->cid = 0;
1503 }
1504
1505 static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
1506 {
1507         u32 cid;
1508         int ret, pages;
1509         struct cnic_local *cp = dev->cnic_priv;
1510         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1511         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1512
1513         if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
1514                 cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
1515                 if (cid == -1) {
1516                         ret = -ENOMEM;
1517                         goto error;
1518                 }
1519                 ctx->cid = cid;
1520                 return 0;
1521         }
1522
1523         cid = cnic_alloc_new_id(&cp->cid_tbl);
1524         if (cid == -1) {
1525                 ret = -ENOMEM;
1526                 goto error;
1527         }
1528
1529         ctx->cid = cid;
1530         pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
1531
1532         ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
1533         if (ret)
1534                 goto error;
1535
1536         pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
1537         ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
1538         if (ret)
1539                 goto error;
1540
1541         pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
1542         ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
1543         if (ret)
1544                 goto error;
1545
1546         return 0;
1547
1548 error:
1549         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1550         return ret;
1551 }
1552
1553 static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
1554                                 struct regpair *ctx_addr)
1555 {
1556         struct cnic_local *cp = dev->cnic_priv;
1557         struct cnic_eth_dev *ethdev = cp->ethdev;
1558         int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
1559         int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
1560         unsigned long align_off = 0;
1561         dma_addr_t ctx_map;
1562         void *ctx;
1563
1564         if (cp->ctx_align) {
1565                 unsigned long mask = cp->ctx_align - 1;
1566
1567                 if (cp->ctx_arr[blk].mapping & mask)
1568                         align_off = cp->ctx_align -
1569                                     (cp->ctx_arr[blk].mapping & mask);
1570         }
1571         ctx_map = cp->ctx_arr[blk].mapping + align_off +
1572                 (off * BNX2X_CONTEXT_MEM_SIZE);
1573         ctx = cp->ctx_arr[blk].ctx + align_off +
1574               (off * BNX2X_CONTEXT_MEM_SIZE);
1575         if (init)
1576                 memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
1577
1578         ctx_addr->lo = ctx_map & 0xffffffff;
1579         ctx_addr->hi = (u64) ctx_map >> 32;
1580         return ctx;
1581 }
1582
1583 static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
1584                                 u32 num)
1585 {
1586         struct cnic_local *cp = dev->cnic_priv;
1587         struct iscsi_kwqe_conn_offload1 *req1 =
1588                         (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1589         struct iscsi_kwqe_conn_offload2 *req2 =
1590                         (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1591         struct iscsi_kwqe_conn_offload3 *req3;
1592         struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
1593         struct cnic_iscsi *iscsi = ctx->proto.iscsi;
1594         u32 cid = ctx->cid;
1595         u32 hw_cid = BNX2X_HW_CID(cp, cid);
1596         struct iscsi_context *ictx;
1597         struct regpair context_addr;
1598         int i, j, n = 2, n_max;
1599         u8 port = CNIC_PORT(cp);
1600
1601         ctx->ctx_flags = 0;
1602         if (!req2->num_additional_wqes)
1603                 return -EINVAL;
1604
1605         n_max = req2->num_additional_wqes + 2;
1606
1607         ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
1608         if (ictx == NULL)
1609                 return -ENOMEM;
1610
1611         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1612
1613         ictx->xstorm_ag_context.hq_prod = 1;
1614
1615         ictx->xstorm_st_context.iscsi.first_burst_length =
1616                 ISCSI_DEF_FIRST_BURST_LEN;
1617         ictx->xstorm_st_context.iscsi.max_send_pdu_length =
1618                 ISCSI_DEF_MAX_RECV_SEG_LEN;
1619         ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
1620                 req1->sq_page_table_addr_lo;
1621         ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
1622                 req1->sq_page_table_addr_hi;
1623         ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
1624         ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
1625         ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
1626                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1627         ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
1628                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1629         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
1630                 iscsi->hq_info.pgtbl[0];
1631         ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
1632                 iscsi->hq_info.pgtbl[1];
1633         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
1634                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1635         ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
1636                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1637         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
1638                 iscsi->r2tq_info.pgtbl[0];
1639         ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
1640                 iscsi->r2tq_info.pgtbl[1];
1641         ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
1642                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1643         ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
1644                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1645         ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
1646                 BNX2X_ISCSI_PBL_NOT_CACHED;
1647         ictx->xstorm_st_context.iscsi.flags.flags |=
1648                 XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
1649         ictx->xstorm_st_context.iscsi.flags.flags |=
1650                 XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1651         ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
1652                 ETH_P_8021Q;
1653         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
1654                 cp->port_mode == CHIP_2_PORT_MODE) {
1655
1656                 port = 0;
1657         }
1658         ictx->xstorm_st_context.common.flags =
1659                 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
1660         ictx->xstorm_st_context.common.flags =
1661                 port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1662
1663         ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
1664         /* TSTORM requires the base address of RQ DB & not PTE */
1665         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
1666                 req2->rq_page_table_addr_lo & PAGE_MASK;
1667         ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
1668                 req2->rq_page_table_addr_hi;
1669         ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
1670         ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
1671         ictx->tstorm_st_context.tcp.flags2 |=
1672                 TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1673         ictx->tstorm_st_context.tcp.ooo_support_mode =
1674                 TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1675
1676         ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1677
1678         ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1679                 req2->rq_page_table_addr_lo;
1680         ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1681                 req2->rq_page_table_addr_hi;
1682         ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
1683         ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
1684         ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
1685                 iscsi->r2tq_info.pgtbl_map & 0xffffffff;
1686         ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
1687                 (u64) iscsi->r2tq_info.pgtbl_map >> 32;
1688         ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
1689                 iscsi->r2tq_info.pgtbl[0];
1690         ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
1691                 iscsi->r2tq_info.pgtbl[1];
1692         ictx->ustorm_st_context.ring.cq_pbl_base.lo =
1693                 req1->cq_page_table_addr_lo;
1694         ictx->ustorm_st_context.ring.cq_pbl_base.hi =
1695                 req1->cq_page_table_addr_hi;
1696         ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
1697         ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
1698         ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
1699         ictx->ustorm_st_context.task_pbe_cache_index =
1700                 BNX2X_ISCSI_PBL_NOT_CACHED;
1701         ictx->ustorm_st_context.task_pdu_cache_index =
1702                 BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;
1703
1704         for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
1705                 if (j == 3) {
1706                         if (n >= n_max)
1707                                 break;
1708                         req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
1709                         j = 0;
1710                 }
1711                 ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
1712                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
1713                         req3->qp_first_pte[j].hi;
1714                 ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
1715                         req3->qp_first_pte[j].lo;
1716         }
1717
1718         ictx->ustorm_st_context.task_pbl_base.lo =
1719                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1720         ictx->ustorm_st_context.task_pbl_base.hi =
1721                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1722         ictx->ustorm_st_context.tce_phy_addr.lo =
1723                 iscsi->task_array_info.pgtbl[0];
1724         ictx->ustorm_st_context.tce_phy_addr.hi =
1725                 iscsi->task_array_info.pgtbl[1];
1726         ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1727         ictx->ustorm_st_context.num_cqs = cp->num_cqs;
1728         ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
1729         ictx->ustorm_st_context.negotiated_rx_and_flags |=
1730                 ISCSI_DEF_MAX_BURST_LEN;
1731         ictx->ustorm_st_context.negotiated_rx |=
1732                 ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
1733                 USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;
1734
1735         ictx->cstorm_st_context.hq_pbl_base.lo =
1736                 iscsi->hq_info.pgtbl_map & 0xffffffff;
1737         ictx->cstorm_st_context.hq_pbl_base.hi =
1738                 (u64) iscsi->hq_info.pgtbl_map >> 32;
1739         ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
1740         ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
1741         ictx->cstorm_st_context.task_pbl_base.lo =
1742                 iscsi->task_array_info.pgtbl_map & 0xffffffff;
1743         ictx->cstorm_st_context.task_pbl_base.hi =
1744                 (u64) iscsi->task_array_info.pgtbl_map >> 32;
1745         /* CSTORM and USTORM initialization is different, CSTORM requires
1746          * CQ DB base & not PTE addr */
1747         ictx->cstorm_st_context.cq_db_base.lo =
1748                 req1->cq_page_table_addr_lo & PAGE_MASK;
1749         ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
1750         ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
1751         ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
1752         for (i = 0; i < cp->num_cqs; i++) {
1753                 ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
1754                         ISCSI_INITIAL_SN;
1755                 ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
1756                         ISCSI_INITIAL_SN;
1757         }
1758
1759         ictx->xstorm_ag_context.cdu_reserved =
1760                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
1761                                        ISCSI_CONNECTION_TYPE);
1762         ictx->ustorm_ag_context.cdu_usage =
1763                 CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
1764                                        ISCSI_CONNECTION_TYPE);
1765         return 0;
1766
1767 }
1768
1769 static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
1770                                    u32 num, int *work)
1771 {
1772         struct iscsi_kwqe_conn_offload1 *req1;
1773         struct iscsi_kwqe_conn_offload2 *req2;
1774         struct cnic_local *cp = dev->cnic_priv;
1775         struct cnic_context *ctx;
1776         struct iscsi_kcqe kcqe;
1777         struct kcqe *cqes[1];
1778         u32 l5_cid;
1779         int ret = 0;
1780
1781         if (num < 2) {
1782                 *work = num;
1783                 return -EINVAL;
1784         }
1785
1786         req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
1787         req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
1788         if ((num - 2) < req2->num_additional_wqes) {
1789                 *work = num;
1790                 return -EINVAL;
1791         }
1792         *work = 2 + req2->num_additional_wqes;
1793
1794         l5_cid = req1->iscsi_conn_id;
1795         if (l5_cid >= MAX_ISCSI_TBL_SZ)
1796                 return -EINVAL;
1797
1798         memset(&kcqe, 0, sizeof(kcqe));
1799         kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
1800         kcqe.iscsi_conn_id = l5_cid;
1801         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
1802
1803         ctx = &cp->ctx_tbl[l5_cid];
1804         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
1805                 kcqe.completion_status =
1806                         ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
1807                 goto done;
1808         }
1809
1810         if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
1811                 atomic_dec(&cp->iscsi_conn);
1812                 goto done;
1813         }
1814         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
1815         if (ret) {
1816                 atomic_dec(&cp->iscsi_conn);
1817                 ret = 0;
1818                 goto done;
1819         }
1820         ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
1821         if (ret < 0) {
1822                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
1823                 atomic_dec(&cp->iscsi_conn);
1824                 goto done;
1825         }
1826
1827         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1828         kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1829
1830 done:
1831         cqes[0] = (struct kcqe *) &kcqe;
1832         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1833         return ret;
1834 }
1835
1836
1837 static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
1838 {
1839         struct cnic_local *cp = dev->cnic_priv;
1840         struct iscsi_kwqe_conn_update *req =
1841                 (struct iscsi_kwqe_conn_update *) kwqe;
1842         void *data;
1843         union l5cm_specific_data l5_data;
1844         u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
1845         int ret;
1846
1847         if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
1848                 return -EINVAL;
1849
1850         data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
1851         if (!data)
1852                 return -ENOMEM;
1853
1854         memcpy(data, kwqe, sizeof(struct kwqe));
1855
1856         ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
1857                         req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
1858         return ret;
1859 }
1860
1861 static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1862 {
1863         struct cnic_local *cp = dev->cnic_priv;
1864         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1865         union l5cm_specific_data l5_data;
1866         int ret;
1867         u32 hw_cid;
1868
1869         init_waitqueue_head(&ctx->waitq);
1870         ctx->wait_cond = 0;
1871         memset(&l5_data, 0, sizeof(l5_data));
1872         hw_cid = BNX2X_HW_CID(cp, ctx->cid);
1873
1874         ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1875                                   hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1876
1877         if (ret == 0) {
1878                 wait_event(ctx->waitq, ctx->wait_cond);
1879                 if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
1880                         return -EBUSY;
1881         }
1882
1883         return ret;
1884 }
1885
1886 static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
1887 {
1888         struct cnic_local *cp = dev->cnic_priv;
1889         struct iscsi_kwqe_conn_destroy *req =
1890                 (struct iscsi_kwqe_conn_destroy *) kwqe;
1891         u32 l5_cid = req->reserved0;
1892         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1893         int ret = 0;
1894         struct iscsi_kcqe kcqe;
1895         struct kcqe *cqes[1];
1896
1897         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
1898                 goto skip_cfc_delete;
1899
1900         if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
1901                 unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;
1902
1903                 if (delta > (2 * HZ))
1904                         delta = 0;
1905
1906                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
1907                 queue_delayed_work(cnic_wq, &cp->delete_task, delta);
1908                 goto destroy_reply;
1909         }
1910
1911         ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
1912
1913 skip_cfc_delete:
1914         cnic_free_bnx2x_conn_resc(dev, l5_cid);
1915
1916         if (!ret) {
1917                 atomic_dec(&cp->iscsi_conn);
1918                 clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1919         }
1920
1921 destroy_reply:
1922         memset(&kcqe, 0, sizeof(kcqe));
1923         kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
1924         kcqe.iscsi_conn_id = l5_cid;
1925         kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1926         kcqe.iscsi_conn_context_id = req->context_id;
1927
1928         cqes[0] = (struct kcqe *) &kcqe;
1929         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1930
1931         return ret;
1932 }
1933
1934 static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
1935                                       struct l4_kwq_connect_req1 *kwqe1,
1936                                       struct l4_kwq_connect_req3 *kwqe3,
1937                                       struct l5cm_active_conn_buffer *conn_buf)
1938 {
1939         struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
1940         struct l5cm_xstorm_conn_buffer *xstorm_buf =
1941                 &conn_buf->xstorm_conn_buffer;
1942         struct l5cm_tstorm_conn_buffer *tstorm_buf =
1943                 &conn_buf->tstorm_conn_buffer;
1944         struct regpair context_addr;
1945         u32 cid = BNX2X_SW_CID(kwqe1->cid);
1946         struct in6_addr src_ip, dst_ip;
1947         int i;
1948         u32 *addrp;
1949
1950         addrp = (u32 *) &conn_addr->local_ip_addr;
1951         for (i = 0; i < 4; i++, addrp++)
1952                 src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1953
1954         addrp = (u32 *) &conn_addr->remote_ip_addr;
1955         for (i = 0; i < 4; i++, addrp++)
1956                 dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
1957
1958         cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
1959
1960         xstorm_buf->context_addr.hi = context_addr.hi;
1961         xstorm_buf->context_addr.lo = context_addr.lo;
1962         xstorm_buf->mss = 0xffff;
1963         xstorm_buf->rcv_buf = kwqe3->rcv_buf;
1964         if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
1965                 xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
1966         xstorm_buf->pseudo_header_checksum =
1967                 swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
1968
1969         if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
1970                 tstorm_buf->params |=
1971                         L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
1972         if (kwqe3->ka_timeout) {
1973                 tstorm_buf->ka_enable = 1;
1974                 tstorm_buf->ka_timeout = kwqe3->ka_timeout;
1975                 tstorm_buf->ka_interval = kwqe3->ka_interval;
1976                 tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
1977         }
1978         tstorm_buf->max_rt_time = 0xffffffff;
1979 }
1980
1981 static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
1982 {
1983         struct cnic_local *cp = dev->cnic_priv;
1984         u32 pfid = cp->pfid;
1985         u8 *mac = dev->mac_addr;
1986
1987         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1988                  XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
1989         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1990                  XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
1991         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1992                  XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
1993         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1994                  XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
1995         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1996                  XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
1997         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1998                  XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
1999
2000         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2001                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2002         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2003                  TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2004                  mac[4]);
2005         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2006                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2007         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2008                  TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2009                  mac[2]);
2010         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2011                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2012         CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2013                  TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2014                  mac[0]);
2015 }
2016
2017 static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
2018 {
2019         struct cnic_local *cp = dev->cnic_priv;
2020         u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
2021         u16 tstorm_flags = 0;
2022
2023         if (tcp_ts) {
2024                 xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
2025                 tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
2026         }
2027
2028         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2029                  XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
2030
2031         CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
2032                   TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
2033 }
2034
2035 static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
2036                               u32 num, int *work)
2037 {
2038         struct cnic_local *cp = dev->cnic_priv;
2039         struct l4_kwq_connect_req1 *kwqe1 =
2040                 (struct l4_kwq_connect_req1 *) wqes[0];
2041         struct l4_kwq_connect_req3 *kwqe3;
2042         struct l5cm_active_conn_buffer *conn_buf;
2043         struct l5cm_conn_addr_params *conn_addr;
2044         union l5cm_specific_data l5_data;
2045         u32 l5_cid = kwqe1->pg_cid;
2046         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
2047         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
2048         int ret;
2049
2050         if (num < 2) {
2051                 *work = num;
2052                 return -EINVAL;
2053         }
2054
2055         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
2056                 *work = 3;
2057         else
2058                 *work = 2;
2059
2060         if (num < *work) {
2061                 *work = num;
2062                 return -EINVAL;
2063         }
2064
2065         if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2066                 netdev_err(dev->netdev, "conn_buf size too big\n");
2067                 return -ENOMEM;
2068         }
2069         conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2070         if (!conn_buf)
2071                 return -ENOMEM;
2072
2073         memset(conn_buf, 0, sizeof(*conn_buf));
2074
2075         conn_addr = &conn_buf->conn_addr_buf;
2076         conn_addr->remote_addr_0 = csk->ha[0];
2077         conn_addr->remote_addr_1 = csk->ha[1];
2078         conn_addr->remote_addr_2 = csk->ha[2];
2079         conn_addr->remote_addr_3 = csk->ha[3];
2080         conn_addr->remote_addr_4 = csk->ha[4];
2081         conn_addr->remote_addr_5 = csk->ha[5];
2082
2083         if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
2084                 struct l4_kwq_connect_req2 *kwqe2 =
2085                         (struct l4_kwq_connect_req2 *) wqes[1];
2086
2087                 conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
2088                 conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
2089                 conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;
2090
2091                 conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
2092                 conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
2093                 conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
2094                 conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
2095         }
2096         kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];
2097
2098         conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
2099         conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
2100         conn_addr->local_tcp_port = kwqe1->src_port;
2101         conn_addr->remote_tcp_port = kwqe1->dst_port;
2102
2103         conn_addr->pmtu = kwqe3->pmtu;
2104         cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);
2105
2106         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2107                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2108
2109         cnic_bnx2x_set_tcp_timestamp(dev,
2110                 kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);
2111
2112         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
2113                         kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2114         if (!ret)
2115                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2116
2117         return ret;
2118 }
2119
2120 static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
2121 {
2122         struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
2123         union l5cm_specific_data l5_data;
2124         int ret;
2125
2126         memset(&l5_data, 0, sizeof(l5_data));
2127         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
2128                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2129         return ret;
2130 }
2131
2132 static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
2133 {
2134         struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
2135         union l5cm_specific_data l5_data;
2136         int ret;
2137
2138         memset(&l5_data, 0, sizeof(l5_data));
2139         ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
2140                         req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
2141         return ret;
2142 }
2143 static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2144 {
2145         struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
2146         struct l4_kcq kcqe;
2147         struct kcqe *cqes[1];
2148
2149         memset(&kcqe, 0, sizeof(kcqe));
2150         kcqe.pg_host_opaque = req->host_opaque;
2151         kcqe.pg_cid = req->host_opaque;
2152         kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
2153         cqes[0] = (struct kcqe *) &kcqe;
2154         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2155         return 0;
2156 }
2157
2158 static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
2159 {
2160         struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
2161         struct l4_kcq kcqe;
2162         struct kcqe *cqes[1];
2163
2164         memset(&kcqe, 0, sizeof(kcqe));
2165         kcqe.pg_host_opaque = req->pg_host_opaque;
2166         kcqe.pg_cid = req->pg_cid;
2167         kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
2168         cqes[0] = (struct kcqe *) &kcqe;
2169         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
2170         return 0;
2171 }
2172
2173 static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
2174 {
2175         struct fcoe_kwqe_stat *req;
2176         struct fcoe_stat_ramrod_params *fcoe_stat;
2177         union l5cm_specific_data l5_data;
2178         struct cnic_local *cp = dev->cnic_priv;
2179         int ret;
2180         u32 cid;
2181
2182         req = (struct fcoe_kwqe_stat *) kwqe;
2183         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2184
2185         fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2186         if (!fcoe_stat)
2187                 return -ENOMEM;
2188
2189         memset(fcoe_stat, 0, sizeof(*fcoe_stat));
2190         memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));
2191
2192         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
2193                                   FCOE_CONNECTION_TYPE, &l5_data);
2194         return ret;
2195 }
2196
2197 static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
2198                                  u32 num, int *work)
2199 {
2200         int ret;
2201         struct cnic_local *cp = dev->cnic_priv;
2202         u32 cid;
2203         struct fcoe_init_ramrod_params *fcoe_init;
2204         struct fcoe_kwqe_init1 *req1;
2205         struct fcoe_kwqe_init2 *req2;
2206         struct fcoe_kwqe_init3 *req3;
2207         union l5cm_specific_data l5_data;
2208
2209         if (num < 3) {
2210                 *work = num;
2211                 return -EINVAL;
2212         }
2213         req1 = (struct fcoe_kwqe_init1 *) wqes[0];
2214         req2 = (struct fcoe_kwqe_init2 *) wqes[1];
2215         req3 = (struct fcoe_kwqe_init3 *) wqes[2];
2216         if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
2217                 *work = 1;
2218                 return -EINVAL;
2219         }
2220         if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
2221                 *work = 2;
2222                 return -EINVAL;
2223         }
2224
2225         if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
2226                 netdev_err(dev->netdev, "fcoe_init size too big\n");
2227                 return -ENOMEM;
2228         }
2229         fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
2230         if (!fcoe_init)
2231                 return -ENOMEM;
2232
2233         memset(fcoe_init, 0, sizeof(*fcoe_init));
2234         memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
2235         memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
2236         memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2237         fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
2238         fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
2239         fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
2240
2241         fcoe_init->sb_num = cp->status_blk_num;
2242         fcoe_init->eq_prod = MAX_KCQ_IDX;
2243         fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
2244         cp->kcq2.sw_prod_idx = 0;
2245
2246         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2247         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
2248                                   FCOE_CONNECTION_TYPE, &l5_data);
2249         *work = 3;
2250         return ret;
2251 }
2252
2253 static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
2254                                  u32 num, int *work)
2255 {
2256         int ret = 0;
2257         u32 cid = -1, l5_cid;
2258         struct cnic_local *cp = dev->cnic_priv;
2259         struct fcoe_kwqe_conn_offload1 *req1;
2260         struct fcoe_kwqe_conn_offload2 *req2;
2261         struct fcoe_kwqe_conn_offload3 *req3;
2262         struct fcoe_kwqe_conn_offload4 *req4;
2263         struct fcoe_conn_offload_ramrod_params *fcoe_offload;
2264         struct cnic_context *ctx;
2265         struct fcoe_context *fctx;
2266         struct regpair ctx_addr;
2267         union l5cm_specific_data l5_data;
2268         struct fcoe_kcqe kcqe;
2269         struct kcqe *cqes[1];
2270
2271         if (num < 4) {
2272                 *work = num;
2273                 return -EINVAL;
2274         }
2275         req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
2276         req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
2277         req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
2278         req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];
2279
2280         *work = 4;
2281
2282         l5_cid = req1->fcoe_conn_id;
2283         if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2284                 goto err_reply;
2285
2286         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2287
2288         ctx = &cp->ctx_tbl[l5_cid];
2289         if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2290                 goto err_reply;
2291
2292         ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
2293         if (ret) {
2294                 ret = 0;
2295                 goto err_reply;
2296         }
2297         cid = ctx->cid;
2298
2299         fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
2300         if (fctx) {
2301                 u32 hw_cid = BNX2X_HW_CID(cp, cid);
2302                 u32 val;
2303
2304                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
2305                                              FCOE_CONNECTION_TYPE);
2306                 fctx->xstorm_ag_context.cdu_reserved = val;
2307                 val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
2308                                              FCOE_CONNECTION_TYPE);
2309                 fctx->ustorm_ag_context.cdu_usage = val;
2310         }
2311         if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
2312                 netdev_err(dev->netdev, "fcoe_offload size too big\n");
2313                 goto err_reply;
2314         }
2315         fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2316         if (!fcoe_offload)
2317                 goto err_reply;
2318
2319         memset(fcoe_offload, 0, sizeof(*fcoe_offload));
2320         memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
2321         memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
2322         memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
2323         memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));
2324
2325         cid = BNX2X_HW_CID(cp, cid);
2326         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
2327                                   FCOE_CONNECTION_TYPE, &l5_data);
2328         if (!ret)
2329                 set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2330
2331         return ret;
2332
2333 err_reply:
2334         if (cid != -1)
2335                 cnic_free_bnx2x_conn_resc(dev, l5_cid);
2336
2337         memset(&kcqe, 0, sizeof(kcqe));
2338         kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
2339         kcqe.fcoe_conn_id = req1->fcoe_conn_id;
2340         kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
2341
2342         cqes[0] = (struct kcqe *) &kcqe;
2343         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2344         return ret;
2345 }
2346
2347 static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
2348 {
2349         struct fcoe_kwqe_conn_enable_disable *req;
2350         struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
2351         union l5cm_specific_data l5_data;
2352         int ret;
2353         u32 cid, l5_cid;
2354         struct cnic_local *cp = dev->cnic_priv;
2355
2356         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2357         cid = req->context_id;
2358         l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;
2359
2360         if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
2361                 netdev_err(dev->netdev, "fcoe_enable size too big\n");
2362                 return -ENOMEM;
2363         }
2364         fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2365         if (!fcoe_enable)
2366                 return -ENOMEM;
2367
2368         memset(fcoe_enable, 0, sizeof(*fcoe_enable));
2369         memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
2370         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
2371                                   FCOE_CONNECTION_TYPE, &l5_data);
2372         return ret;
2373 }
2374
2375 static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
2376 {
2377         struct fcoe_kwqe_conn_enable_disable *req;
2378         struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
2379         union l5cm_specific_data l5_data;
2380         int ret;
2381         u32 cid, l5_cid;
2382         struct cnic_local *cp = dev->cnic_priv;
2383
2384         req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
2385         cid = req->context_id;
2386         l5_cid = req->conn_id;
2387         if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2388                 return -EINVAL;
2389
2390         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2391
2392         if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
2393                 netdev_err(dev->netdev, "fcoe_disable size too big\n");
2394                 return -ENOMEM;
2395         }
2396         fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
2397         if (!fcoe_disable)
2398                 return -ENOMEM;
2399
2400         memset(fcoe_disable, 0, sizeof(*fcoe_disable));
2401         memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
2402         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
2403                                   FCOE_CONNECTION_TYPE, &l5_data);
2404         return ret;
2405 }
2406
2407 static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2408 {
2409         struct fcoe_kwqe_conn_destroy *req;
2410         union l5cm_specific_data l5_data;
2411         int ret;
2412         u32 cid, l5_cid;
2413         struct cnic_local *cp = dev->cnic_priv;
2414         struct cnic_context *ctx;
2415         struct fcoe_kcqe kcqe;
2416         struct kcqe *cqes[1];
2417
2418         req = (struct fcoe_kwqe_conn_destroy *) kwqe;
2419         cid = req->context_id;
2420         l5_cid = req->conn_id;
2421         if (l5_cid >= BNX2X_FCOE_NUM_CONNECTIONS)
2422                 return -EINVAL;
2423
2424         l5_cid += BNX2X_FCOE_L5_CID_BASE;
2425
2426         ctx = &cp->ctx_tbl[l5_cid];
2427
2428         init_waitqueue_head(&ctx->waitq);
2429         ctx->wait_cond = 0;
2430
2431         memset(&l5_data, 0, sizeof(l5_data));
2432         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
2433                                   FCOE_CONNECTION_TYPE, &l5_data);
2434         if (ret == 0) {
2435                 wait_event(ctx->waitq, ctx->wait_cond);
2436                 set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
2437                 queue_delayed_work(cnic_wq, &cp->delete_task,
2438                                    msecs_to_jiffies(2000));
2439         }
2440
2441         memset(&kcqe, 0, sizeof(kcqe));
2442         kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
2443         kcqe.fcoe_conn_id = req->conn_id;
2444         kcqe.fcoe_conn_context_id = cid;
2445
2446         cqes[0] = (struct kcqe *) &kcqe;
2447         cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
2448         return ret;
2449 }
2450
2451 static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
2452 {
2453         struct cnic_local *cp = dev->cnic_priv;
2454         u32 i;
2455
2456         for (i = start_cid; i < cp->max_cid_space; i++) {
2457                 struct cnic_context *ctx = &cp->ctx_tbl[i];
2458                 int j;
2459
2460                 while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
2461                         msleep(10);
2462
2463                 for (j = 0; j < 5; j++) {
2464                         if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2465                                 break;
2466                         msleep(20);
2467                 }
2468
2469                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
2470                         netdev_warn(dev->netdev, "CID %x not deleted\n",
2471                                    ctx->cid);
2472         }
2473 }
2474
2475 static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
2476 {
2477         struct fcoe_kwqe_destroy *req;
2478         union l5cm_specific_data l5_data;
2479         struct cnic_local *cp = dev->cnic_priv;
2480         int ret;
2481         u32 cid;
2482
2483         cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
2484
2485         req = (struct fcoe_kwqe_destroy *) kwqe;
2486         cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2487
2488         memset(&l5_data, 0, sizeof(l5_data));
2489         ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
2490                                   FCOE_CONNECTION_TYPE, &l5_data);
2491         return ret;
2492 }
2493
2494 static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
2495                                          struct kwqe *wqes[], u32 num_wqes)
2496 {
2497         int i, work, ret;
2498         u32 opcode;
2499         struct kwqe *kwqe;
2500
2501         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2502                 return -EAGAIN;         /* bnx2 is down */
2503
2504         for (i = 0; i < num_wqes; ) {
2505                 kwqe = wqes[i];
2506                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2507                 work = 1;
2508
2509                 switch (opcode) {
2510                 case ISCSI_KWQE_OPCODE_INIT1:
2511                         ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
2512                         break;
2513                 case ISCSI_KWQE_OPCODE_INIT2:
2514                         ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
2515                         break;
2516                 case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
2517                         ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
2518                                                      num_wqes - i, &work);
2519                         break;
2520                 case ISCSI_KWQE_OPCODE_UPDATE_CONN:
2521                         ret = cnic_bnx2x_iscsi_update(dev, kwqe);
2522                         break;
2523                 case ISCSI_KWQE_OPCODE_DESTROY_CONN:
2524                         ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
2525                         break;
2526                 case L4_KWQE_OPCODE_VALUE_CONNECT1:
2527                         ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
2528                                                  &work);
2529                         break;
2530                 case L4_KWQE_OPCODE_VALUE_CLOSE:
2531                         ret = cnic_bnx2x_close(dev, kwqe);
2532                         break;
2533                 case L4_KWQE_OPCODE_VALUE_RESET:
2534                         ret = cnic_bnx2x_reset(dev, kwqe);
2535                         break;
2536                 case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
2537                         ret = cnic_bnx2x_offload_pg(dev, kwqe);
2538                         break;
2539                 case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
2540                         ret = cnic_bnx2x_update_pg(dev, kwqe);
2541                         break;
2542                 case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
2543                         ret = 0;
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_fcoe_kwqes(struct cnic_dev *dev,
2560                                         struct kwqe *wqes[], u32 num_wqes)
2561 {
2562         struct cnic_local *cp = dev->cnic_priv;
2563         int i, work, ret;
2564         u32 opcode;
2565         struct kwqe *kwqe;
2566
2567         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2568                 return -EAGAIN;         /* bnx2 is down */
2569
2570         if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
2571                 return -EINVAL;
2572
2573         for (i = 0; i < num_wqes; ) {
2574                 kwqe = wqes[i];
2575                 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
2576                 work = 1;
2577
2578                 switch (opcode) {
2579                 case FCOE_KWQE_OPCODE_INIT1:
2580                         ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
2581                                                     num_wqes - i, &work);
2582                         break;
2583                 case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
2584                         ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
2585                                                     num_wqes - i, &work);
2586                         break;
2587                 case FCOE_KWQE_OPCODE_ENABLE_CONN:
2588                         ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
2589                         break;
2590                 case FCOE_KWQE_OPCODE_DISABLE_CONN:
2591                         ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
2592                         break;
2593                 case FCOE_KWQE_OPCODE_DESTROY_CONN:
2594                         ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
2595                         break;
2596                 case FCOE_KWQE_OPCODE_DESTROY:
2597                         ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
2598                         break;
2599                 case FCOE_KWQE_OPCODE_STAT:
2600                         ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
2601                         break;
2602                 default:
2603                         ret = 0;
2604                         netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
2605                                    opcode);
2606                         break;
2607                 }
2608                 if (ret < 0)
2609                         netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
2610                                    opcode);
2611                 i += work;
2612         }
2613         return 0;
2614 }
2615
2616 static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
2617                                    u32 num_wqes)
2618 {
2619         int ret = -EINVAL;
2620         u32 layer_code;
2621
2622         if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
2623                 return -EAGAIN;         /* bnx2x is down */
2624
2625         if (!num_wqes)
2626                 return 0;
2627
2628         layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
2629         switch (layer_code) {
2630         case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
2631         case KWQE_FLAGS_LAYER_MASK_L4:
2632         case KWQE_FLAGS_LAYER_MASK_L2:
2633                 ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
2634                 break;
2635
2636         case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
2637                 ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
2638                 break;
2639         }
2640         return ret;
2641 }
2642
2643 static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
2644 {
2645         if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
2646                 return KCQE_FLAGS_LAYER_MASK_L4;
2647
2648         return opflag & KCQE_FLAGS_LAYER_MASK;
2649 }
2650
2651 static void service_kcqes(struct cnic_dev *dev, int num_cqes)
2652 {
2653         struct cnic_local *cp = dev->cnic_priv;
2654         int i, j, comp = 0;
2655
2656         i = 0;
2657         j = 1;
2658         while (num_cqes) {
2659                 struct cnic_ulp_ops *ulp_ops;
2660                 int ulp_type;
2661                 u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
2662                 u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2663
2664                 if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2665                         comp++;
2666
2667                 while (j < num_cqes) {
2668                         u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
2669
2670                         if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2671                                 break;
2672
2673                         if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2674                                 comp++;
2675                         j++;
2676                 }
2677
2678                 if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
2679                         ulp_type = CNIC_ULP_RDMA;
2680                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
2681                         ulp_type = CNIC_ULP_ISCSI;
2682                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
2683                         ulp_type = CNIC_ULP_FCOE;
2684                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
2685                         ulp_type = CNIC_ULP_L4;
2686                 else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
2687                         goto end;
2688                 else {
2689                         netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
2690                                    kcqe_op_flag);
2691                         goto end;
2692                 }
2693
2694                 rcu_read_lock();
2695                 ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
2696                 if (likely(ulp_ops)) {
2697                         ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
2698                                                   cp->completed_kcq + i, j);
2699                 }
2700                 rcu_read_unlock();
2701 end:
2702                 num_cqes -= j;
2703                 i += j;
2704                 j = 1;
2705         }
2706         if (unlikely(comp))
2707                 cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2708 }
2709
2710 static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2711 {
2712         struct cnic_local *cp = dev->cnic_priv;
2713         u16 i, ri, hw_prod, last;
2714         struct kcqe *kcqe;
2715         int kcqe_cnt = 0, last_cnt = 0;
2716
2717         i = ri = last = info->sw_prod_idx;
2718         ri &= MAX_KCQ_IDX;
2719         hw_prod = *info->hw_prod_idx_ptr;
2720         hw_prod = info->hw_idx(hw_prod);
2721
2722         while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2723                 kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2724                 cp->completed_kcq[kcqe_cnt++] = kcqe;
2725                 i = info->next_idx(i);
2726                 ri = i & MAX_KCQ_IDX;
2727                 if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
2728                         last_cnt = kcqe_cnt;
2729                         last = i;
2730                 }
2731         }
2732
2733         info->sw_prod_idx = last;
2734         return last_cnt;
2735 }
2736
2737 static int cnic_l2_completion(struct cnic_local *cp)
2738 {
2739         u16 hw_cons, sw_cons;
2740         struct cnic_uio_dev *udev = cp->udev;
2741         union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2742                                         (udev->l2_ring + (2 * BCM_PAGE_SIZE));
2743         u32 cmd;
2744         int comp = 0;
2745
2746         if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
2747                 return 0;
2748
2749         hw_cons = *cp->rx_cons_ptr;
2750         if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
2751                 hw_cons++;
2752
2753         sw_cons = cp->rx_cons;
2754         while (sw_cons != hw_cons) {
2755                 u8 cqe_fp_flags;
2756
2757                 cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
2758                 cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
2759                 if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
2760                         cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
2761                         cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
2762                         if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
2763                             cmd == RAMROD_CMD_ID_ETH_HALT)
2764                                 comp++;
2765                 }
2766                 sw_cons = BNX2X_NEXT_RCQE(sw_cons);
2767         }
2768         return comp;
2769 }
2770
2771 static void cnic_chk_pkt_rings(struct cnic_local *cp)
2772 {
2773         u16 rx_cons, tx_cons;
2774         int comp = 0;
2775
2776         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2777                 return;
2778
2779         rx_cons = *cp->rx_cons_ptr;
2780         tx_cons = *cp->tx_cons_ptr;
2781         if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2782                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
2783                         comp = cnic_l2_completion(cp);
2784
2785                 cp->tx_cons = tx_cons;
2786                 cp->rx_cons = rx_cons;
2787
2788                 if (cp->udev)
2789                         uio_event_notify(&cp->udev->cnic_uinfo);
2790         }
2791         if (comp)
2792                 clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2793 }
2794
2795 static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2796 {
2797         struct cnic_local *cp = dev->cnic_priv;
2798         u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2799         int kcqe_cnt;
2800
2801         /* status block index must be read before reading other fields */
2802         rmb();
2803         cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2804
2805         while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2806
2807                 service_kcqes(dev, kcqe_cnt);
2808
2809                 /* Tell compiler that status_blk fields can change. */
2810                 barrier();
2811                 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2812                 /* status block index must be read first */
2813                 rmb();
2814                 cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2815         }
2816
2817         CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2818
2819         cnic_chk_pkt_rings(cp);
2820
2821         return status_idx;
2822 }
2823
2824 static int cnic_service_bnx2(void *data, void *status_blk)
2825 {
2826         struct cnic_dev *dev = data;
2827
2828         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2829                 struct status_block *sblk = status_blk;
2830
2831                 return sblk->status_idx;
2832         }
2833
2834         return cnic_service_bnx2_queues(dev);
2835 }
2836
2837 static void cnic_service_bnx2_msix(unsigned long data)
2838 {
2839         struct cnic_dev *dev = (struct cnic_dev *) data;
2840         struct cnic_local *cp = dev->cnic_priv;
2841
2842         cp->last_status_idx = cnic_service_bnx2_queues(dev);
2843
2844         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
2845                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
2846 }
2847
2848 static void cnic_doirq(struct cnic_dev *dev)
2849 {
2850         struct cnic_local *cp = dev->cnic_priv;
2851
2852         if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2853                 u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
2854
2855                 prefetch(cp->status_blk.gen);
2856                 prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2857
2858                 tasklet_schedule(&cp->cnic_irq_task);
2859         }
2860 }
2861
2862 static irqreturn_t cnic_irq(int irq, void *dev_instance)
2863 {
2864         struct cnic_dev *dev = dev_instance;
2865         struct cnic_local *cp = dev->cnic_priv;
2866
2867         if (cp->ack_int)
2868                 cp->ack_int(dev);
2869
2870         cnic_doirq(dev);
2871
2872         return IRQ_HANDLED;
2873 }
2874
2875 static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
2876                                       u16 index, u8 op, u8 update)
2877 {
2878         struct cnic_local *cp = dev->cnic_priv;
2879         u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
2880                        COMMAND_REG_INT_ACK);
2881         struct igu_ack_register igu_ack;
2882
2883         igu_ack.status_block_index = index;
2884         igu_ack.sb_id_and_flags =
2885                         ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
2886                          (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
2887                          (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
2888                          (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
2889
2890         CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
2891 }
2892
2893 static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
2894                             u16 index, u8 op, u8 update)
2895 {
2896         struct igu_regular cmd_data;
2897         u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;
2898
2899         cmd_data.sb_id_and_flags =
2900                 (index << IGU_REGULAR_SB_INDEX_SHIFT) |
2901                 (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
2902                 (update << IGU_REGULAR_BUPDATE_SHIFT) |
2903                 (op << IGU_REGULAR_ENABLE_INT_SHIFT);
2904
2905
2906         CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
2907 }
2908
2909 static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
2910 {
2911         struct cnic_local *cp = dev->cnic_priv;
2912
2913         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
2914                            IGU_INT_DISABLE, 0);
2915 }
2916
2917 static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
2918 {
2919         struct cnic_local *cp = dev->cnic_priv;
2920
2921         cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
2922                         IGU_INT_DISABLE, 0);
2923 }
2924
2925 static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
2926 {
2927         u32 last_status = *info->status_idx_ptr;
2928         int kcqe_cnt;
2929
2930         /* status block index must be read before reading the KCQ */
2931         rmb();
2932         while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
2933
2934                 service_kcqes(dev, kcqe_cnt);
2935
2936                 /* Tell compiler that sblk fields can change. */
2937                 barrier();
2938
2939                 last_status = *info->status_idx_ptr;
2940                 /* status block index must be read before reading the KCQ */
2941                 rmb();
2942         }
2943         return last_status;
2944 }
2945
2946 static void cnic_service_bnx2x_bh(unsigned long data)
2947 {
2948         struct cnic_dev *dev = (struct cnic_dev *) data;
2949         struct cnic_local *cp = dev->cnic_priv;
2950         u32 status_idx, new_status_idx;
2951
2952         if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
2953                 return;
2954
2955         while (1) {
2956                 status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
2957
2958                 CNIC_WR16(dev, cp->kcq1.io_addr,
2959                           cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
2960
2961                 if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
2962                         cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
2963                                            status_idx, IGU_INT_ENABLE, 1);
2964                         break;
2965                 }
2966
2967                 new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
2968
2969                 if (new_status_idx != status_idx)
2970                         continue;
2971
2972                 CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
2973                           MAX_KCQ_IDX);
2974
2975                 cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
2976                                 status_idx, IGU_INT_ENABLE, 1);
2977
2978                 break;
2979         }
2980 }
2981
2982 static int cnic_service_bnx2x(void *data, void *status_blk)
2983 {
2984         struct cnic_dev *dev = data;
2985         struct cnic_local *cp = dev->cnic_priv;
2986
2987         if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
2988                 cnic_doirq(dev);
2989
2990         cnic_chk_pkt_rings(cp);
2991
2992         return 0;
2993 }
2994
2995 static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
2996 {
2997         struct cnic_ulp_ops *ulp_ops;
2998
2999         if (if_type == CNIC_ULP_ISCSI)
3000                 cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3001
3002         mutex_lock(&cnic_lock);
3003         ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3004                                             lockdep_is_held(&cnic_lock));
3005         if (!ulp_ops) {
3006                 mutex_unlock(&cnic_lock);
3007                 return;
3008         }
3009         set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3010         mutex_unlock(&cnic_lock);
3011
3012         if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3013                 ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3014
3015         clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3016 }
3017
3018 static void cnic_ulp_stop(struct cnic_dev *dev)
3019 {
3020         struct cnic_local *cp = dev->cnic_priv;
3021         int if_type;
3022
3023         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
3024                 cnic_ulp_stop_one(cp, if_type);
3025 }
3026
3027 static void cnic_ulp_start(struct cnic_dev *dev)
3028 {
3029         struct cnic_local *cp = dev->cnic_priv;
3030         int if_type;
3031
3032         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
3033                 struct cnic_ulp_ops *ulp_ops;
3034
3035                 mutex_lock(&cnic_lock);
3036                 ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
3037                                                     lockdep_is_held(&cnic_lock));
3038                 if (!ulp_ops || !ulp_ops->cnic_start) {
3039                         mutex_unlock(&cnic_lock);
3040                         continue;
3041                 }
3042                 set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3043                 mutex_unlock(&cnic_lock);
3044
3045                 if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
3046                         ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3047
3048                 clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3049         }
3050 }
3051
3052 static int cnic_ctl(void *data, struct cnic_ctl_info *info)
3053 {
3054         struct cnic_dev *dev = data;
3055
3056         switch (info->cmd) {
3057         case CNIC_CTL_STOP_CMD:
3058                 cnic_hold(dev);
3059
3060                 cnic_ulp_stop(dev);
3061                 cnic_stop_hw(dev);
3062
3063                 cnic_put(dev);
3064                 break;
3065         case CNIC_CTL_START_CMD:
3066                 cnic_hold(dev);
3067
3068                 if (!cnic_start_hw(dev))
3069                         cnic_ulp_start(dev);
3070
3071                 cnic_put(dev);
3072                 break;
3073         case CNIC_CTL_STOP_ISCSI_CMD: {
3074                 struct cnic_local *cp = dev->cnic_priv;
3075                 set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
3076                 queue_delayed_work(cnic_wq, &cp->delete_task, 0);
3077                 break;
3078         }
3079         case CNIC_CTL_COMPLETION_CMD: {
3080                 struct cnic_ctl_completion *comp = &info->data.comp;
3081                 u32 cid = BNX2X_SW_CID(comp->cid);
3082                 u32 l5_cid;
3083                 struct cnic_local *cp = dev->cnic_priv;
3084
3085                 if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
3086                         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3087
3088                         if (unlikely(comp->error)) {
3089                                 set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
3090                                 netdev_err(dev->netdev,
3091                                            "CID %x CFC delete comp error %x\n",
3092                                            cid, comp->error);
3093                         }
3094
3095                         ctx->wait_cond = 1;
3096                         wake_up(&ctx->waitq);
3097                 }
3098                 break;
3099         }
3100         default:
3101                 return -EINVAL;
3102         }
3103         return 0;
3104 }
3105
3106 static void cnic_ulp_init(struct cnic_dev *dev)
3107 {
3108         int i;
3109         struct cnic_local *cp = dev->cnic_priv;
3110
3111         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3112                 struct cnic_ulp_ops *ulp_ops;
3113
3114                 mutex_lock(&cnic_lock);
3115                 ulp_ops = cnic_ulp_tbl_prot(i);
3116                 if (!ulp_ops || !ulp_ops->cnic_init) {
3117                         mutex_unlock(&cnic_lock);
3118                         continue;
3119                 }
3120                 ulp_get(ulp_ops);
3121                 mutex_unlock(&cnic_lock);
3122
3123                 if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3124                         ulp_ops->cnic_init(dev);
3125
3126                 ulp_put(ulp_ops);
3127         }
3128 }
3129
3130 static void cnic_ulp_exit(struct cnic_dev *dev)
3131 {
3132         int i;
3133         struct cnic_local *cp = dev->cnic_priv;
3134
3135         for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
3136                 struct cnic_ulp_ops *ulp_ops;
3137
3138                 mutex_lock(&cnic_lock);
3139                 ulp_ops = cnic_ulp_tbl_prot(i);
3140                 if (!ulp_ops || !ulp_ops->cnic_exit) {
3141                         mutex_unlock(&cnic_lock);
3142                         continue;
3143                 }
3144                 ulp_get(ulp_ops);
3145                 mutex_unlock(&cnic_lock);
3146
3147                 if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
3148                         ulp_ops->cnic_exit(dev);
3149
3150                 ulp_put(ulp_ops);
3151         }
3152 }
3153
3154 static int cnic_cm_offload_pg(struct cnic_sock *csk)
3155 {
3156         struct cnic_dev *dev = csk->dev;
3157         struct l4_kwq_offload_pg *l4kwqe;
3158         struct kwqe *wqes[1];
3159
3160         l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
3161         memset(l4kwqe, 0, sizeof(*l4kwqe));
3162         wqes[0] = (struct kwqe *) l4kwqe;
3163
3164         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
3165         l4kwqe->flags =
3166                 L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
3167         l4kwqe->l2hdr_nbytes = ETH_HLEN;
3168
3169         l4kwqe->da0 = csk->ha[0];
3170         l4kwqe->da1 = csk->ha[1];
3171         l4kwqe->da2 = csk->ha[2];
3172         l4kwqe->da3 = csk->ha[3];
3173         l4kwqe->da4 = csk->ha[4];
3174         l4kwqe->da5 = csk->ha[5];
3175
3176         l4kwqe->sa0 = dev->mac_addr[0];
3177         l4kwqe->sa1 = dev->mac_addr[1];
3178         l4kwqe->sa2 = dev->mac_addr[2];
3179         l4kwqe->sa3 = dev->mac_addr[3];
3180         l4kwqe->sa4 = dev->mac_addr[4];
3181         l4kwqe->sa5 = dev->mac_addr[5];
3182
3183         l4kwqe->etype = ETH_P_IP;
3184         l4kwqe->ipid_start = DEF_IPID_START;
3185         l4kwqe->host_opaque = csk->l5_cid;
3186
3187         if (csk->vlan_id) {
3188                 l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
3189                 l4kwqe->vlan_tag = csk->vlan_id;
3190                 l4kwqe->l2hdr_nbytes += 4;
3191         }
3192
3193         return dev->submit_kwqes(dev, wqes, 1);
3194 }
3195
3196 static int cnic_cm_update_pg(struct cnic_sock *csk)
3197 {
3198         struct cnic_dev *dev = csk->dev;
3199         struct l4_kwq_update_pg *l4kwqe;
3200         struct kwqe *wqes[1];
3201
3202         l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
3203         memset(l4kwqe, 0, sizeof(*l4kwqe));
3204         wqes[0] = (struct kwqe *) l4kwqe;
3205
3206         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
3207         l4kwqe->flags =
3208                 L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
3209         l4kwqe->pg_cid = csk->pg_cid;
3210
3211         l4kwqe->da0 = csk->ha[0];
3212         l4kwqe->da1 = csk->ha[1];
3213         l4kwqe->da2 = csk->ha[2];
3214         l4kwqe->da3 = csk->ha[3];
3215         l4kwqe->da4 = csk->ha[4];
3216         l4kwqe->da5 = csk->ha[5];
3217
3218         l4kwqe->pg_host_opaque = csk->l5_cid;
3219         l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;
3220
3221         return dev->submit_kwqes(dev, wqes, 1);
3222 }
3223
3224 static int cnic_cm_upload_pg(struct cnic_sock *csk)
3225 {
3226         struct cnic_dev *dev = csk->dev;
3227         struct l4_kwq_upload *l4kwqe;
3228         struct kwqe *wqes[1];
3229
3230         l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
3231         memset(l4kwqe, 0, sizeof(*l4kwqe));
3232         wqes[0] = (struct kwqe *) l4kwqe;
3233
3234         l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
3235         l4kwqe->flags =
3236                 L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
3237         l4kwqe->cid = csk->pg_cid;
3238
3239         return dev->submit_kwqes(dev, wqes, 1);
3240 }
3241
3242 static int cnic_cm_conn_req(struct cnic_sock *csk)
3243 {
3244         struct cnic_dev *dev = csk->dev;
3245         struct l4_kwq_connect_req1 *l4kwqe1;
3246         struct l4_kwq_connect_req2 *l4kwqe2;
3247         struct l4_kwq_connect_req3 *l4kwqe3;
3248         struct kwqe *wqes[3];
3249         u8 tcp_flags = 0;
3250         int num_wqes = 2;
3251
3252         l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
3253         l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
3254         l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
3255         memset(l4kwqe1, 0, sizeof(*l4kwqe1));
3256         memset(l4kwqe2, 0, sizeof(*l4kwqe2));
3257         memset(l4kwqe3, 0, sizeof(*l4kwqe3));
3258
3259         l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
3260         l4kwqe3->flags =
3261                 L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
3262         l4kwqe3->ka_timeout = csk->ka_timeout;
3263         l4kwqe3->ka_interval = csk->ka_interval;
3264         l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
3265         l4kwqe3->tos = csk->tos;
3266         l4kwqe3->ttl = csk->ttl;
3267         l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
3268         l4kwqe3->pmtu = csk->mtu;
3269         l4kwqe3->rcv_buf = csk->rcv_buf;
3270         l4kwqe3->snd_buf = csk->snd_buf;
3271         l4kwqe3->seed = csk->seed;
3272
3273         wqes[0] = (struct kwqe *) l4kwqe1;
3274         if (test_bit(SK_F_IPV6, &csk->flags)) {
3275                 wqes[1] = (struct kwqe *) l4kwqe2;
3276                 wqes[2] = (struct kwqe *) l4kwqe3;
3277                 num_wqes = 3;
3278
3279                 l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
3280                 l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
3281                 l4kwqe2->flags =
3282                         L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
3283                         L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
3284                 l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
3285                 l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
3286                 l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
3287                 l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
3288                 l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
3289                 l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
3290                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
3291                                sizeof(struct tcphdr);
3292         } else {
3293                 wqes[1] = (struct kwqe *) l4kwqe3;
3294                 l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
3295                                sizeof(struct tcphdr);
3296         }
3297
3298         l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
3299         l4kwqe1->flags =
3300                 (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
3301                  L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
3302         l4kwqe1->cid = csk->cid;
3303         l4kwqe1->pg_cid = csk->pg_cid;
3304         l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
3305         l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
3306         l4kwqe1->src_port = be16_to_cpu(csk->src_port);
3307         l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
3308         if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
3309                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
3310         if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
3311                 tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
3312         if (csk->tcp_flags & SK_TCP_NAGLE)
3313                 tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
3314         if (csk->tcp_flags & SK_TCP_TIMESTAMP)
3315                 tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
3316         if (csk->tcp_flags & SK_TCP_SACK)
3317                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
3318         if (csk->tcp_flags & SK_TCP_SEG_SCALING)
3319                 tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;
3320
3321         l4kwqe1->tcp_flags = tcp_flags;
3322
3323         return dev->submit_kwqes(dev, wqes, num_wqes);
3324 }
3325
3326 static int cnic_cm_close_req(struct cnic_sock *csk)
3327 {
3328         struct cnic_dev *dev = csk->dev;
3329         struct l4_kwq_close_req *l4kwqe;
3330         struct kwqe *wqes[1];
3331
3332         l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
3333         memset(l4kwqe, 0, sizeof(*l4kwqe));
3334         wqes[0] = (struct kwqe *) l4kwqe;
3335
3336         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
3337         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
3338         l4kwqe->cid = csk->cid;
3339
3340         return dev->submit_kwqes(dev, wqes, 1);
3341 }
3342
3343 static int cnic_cm_abort_req(struct cnic_sock *csk)
3344 {
3345         struct cnic_dev *dev = csk->dev;
3346         struct l4_kwq_reset_req *l4kwqe;
3347         struct kwqe *wqes[1];
3348
3349         l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
3350         memset(l4kwqe, 0, sizeof(*l4kwqe));
3351         wqes[0] = (struct kwqe *) l4kwqe;
3352
3353         l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
3354         l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
3355         l4kwqe->cid = csk->cid;
3356
3357         return dev->submit_kwqes(dev, wqes, 1);
3358 }
3359
3360 static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
3361                           u32 l5_cid, struct cnic_sock **csk, void *context)
3362 {
3363         struct cnic_local *cp = dev->cnic_priv;
3364         struct cnic_sock *csk1;
3365
3366         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3367                 return -EINVAL;
3368
3369         if (cp->ctx_tbl) {
3370                 struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3371
3372                 if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
3373                         return -EAGAIN;
3374         }
3375
3376         csk1 = &cp->csk_tbl[l5_cid];
3377         if (atomic_read(&csk1->ref_count))
3378                 return -EAGAIN;
3379
3380         if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
3381                 return -EBUSY;
3382
3383         csk1->dev = dev;
3384         csk1->cid = cid;
3385         csk1->l5_cid = l5_cid;
3386         csk1->ulp_type = ulp_type;
3387         csk1->context = context;
3388
3389         csk1->ka_timeout = DEF_KA_TIMEOUT;
3390         csk1->ka_interval = DEF_KA_INTERVAL;
3391         csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
3392         csk1->tos = DEF_TOS;
3393         csk1->ttl = DEF_TTL;
3394         csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
3395         csk1->rcv_buf = DEF_RCV_BUF;
3396         csk1->snd_buf = DEF_SND_BUF;
3397         csk1->seed = DEF_SEED;
3398
3399         *csk = csk1;
3400         return 0;
3401 }
3402
3403 static void cnic_cm_cleanup(struct cnic_sock *csk)
3404 {
3405         if (csk->src_port) {
3406                 struct cnic_dev *dev = csk->dev;
3407                 struct cnic_local *cp = dev->cnic_priv;
3408
3409                 cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3410                 csk->src_port = 0;
3411         }
3412 }
3413
3414 static void cnic_close_conn(struct cnic_sock *csk)
3415 {
3416         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
3417                 cnic_cm_upload_pg(csk);
3418                 clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3419         }
3420         cnic_cm_cleanup(csk);
3421 }
3422
3423 static int cnic_cm_destroy(struct cnic_sock *csk)
3424 {
3425         if (!cnic_in_use(csk))
3426                 return -EINVAL;
3427
3428         csk_hold(csk);
3429         clear_bit(SK_F_INUSE, &csk->flags);
3430         smp_mb__after_clear_bit();
3431         while (atomic_read(&csk->ref_count) != 1)
3432                 msleep(1);
3433         cnic_cm_cleanup(csk);
3434
3435         csk->flags = 0;
3436         csk_put(csk);
3437         return 0;
3438 }
3439
3440 static inline u16 cnic_get_vlan(struct net_device *dev,
3441                                 struct net_device **vlan_dev)
3442 {
3443         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3444                 *vlan_dev = vlan_dev_real_dev(dev);
3445                 return vlan_dev_vlan_id(dev);
3446         }
3447         *vlan_dev = dev;
3448         return 0;
3449 }
3450
3451 static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
3452                              struct dst_entry **dst)
3453 {
3454 #if defined(CONFIG_INET)
3455         struct rtable *rt;
3456
3457         rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
3458         if (!IS_ERR(rt)) {
3459                 *dst = &rt->dst;
3460                 return 0;
3461         }
3462         return PTR_ERR(rt);
3463 #else
3464         return -ENETUNREACH;
3465 #endif
3466 }
3467
3468 static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
3469                              struct dst_entry **dst)
3470 {
3471 #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3472         struct flowi6 fl6;
3473
3474         memset(&fl6, 0, sizeof(fl6));
3475         ipv6_addr_copy(&fl6.daddr, &dst_addr->sin6_addr);
3476         if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
3477                 fl6.flowi6_oif = dst_addr->sin6_scope_id;
3478
3479         *dst = ip6_route_output(&init_net, NULL, &fl6);
3480         if (*dst)
3481                 return 0;
3482 #endif
3483
3484         return -ENETUNREACH;
3485 }
3486
3487 static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
3488                                            int ulp_type)
3489 {
3490         struct cnic_dev *dev = NULL;
3491         struct dst_entry *dst;
3492         struct net_device *netdev = NULL;
3493         int err = -ENETUNREACH;
3494
3495         if (dst_addr->sin_family == AF_INET)
3496                 err = cnic_get_v4_route(dst_addr, &dst);
3497         else if (dst_addr->sin_family == AF_INET6) {
3498                 struct sockaddr_in6 *dst_addr6 =
3499                         (struct sockaddr_in6 *) dst_addr;
3500
3501                 err = cnic_get_v6_route(dst_addr6, &dst);
3502         } else
3503                 return NULL;
3504
3505         if (err)
3506                 return NULL;
3507
3508         if (!dst->dev)
3509                 goto done;
3510
3511         cnic_get_vlan(dst->dev, &netdev);
3512
3513         dev = cnic_from_netdev(netdev);
3514
3515 done:
3516         dst_release(dst);
3517         if (dev)
3518                 cnic_put(dev);
3519         return dev;
3520 }
3521
3522 static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3523 {
3524         struct cnic_dev *dev = csk->dev;
3525         struct cnic_local *cp = dev->cnic_priv;
3526
3527         return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
3528 }
3529
3530 static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3531 {
3532         struct cnic_dev *dev = csk->dev;
3533         struct cnic_local *cp = dev->cnic_priv;
3534         int is_v6, rc = 0;
3535         struct dst_entry *dst = NULL;
3536         struct net_device *realdev;
3537         __be16 local_port;
3538         u32 port_id;
3539
3540         if (saddr->local.v6.sin6_family == AF_INET6 &&
3541             saddr->remote.v6.sin6_family == AF_INET6)
3542                 is_v6 = 1;
3543         else if (saddr->local.v4.sin_family == AF_INET &&
3544                  saddr->remote.v4.sin_family == AF_INET)
3545                 is_v6 = 0;
3546         else
3547                 return -EINVAL;
3548
3549         clear_bit(SK_F_IPV6, &csk->flags);
3550
3551         if (is_v6) {
3552                 set_bit(SK_F_IPV6, &csk->flags);
3553                 cnic_get_v6_route(&saddr->remote.v6, &dst);
3554
3555                 memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
3556                        sizeof(struct in6_addr));
3557                 csk->dst_port = saddr->remote.v6.sin6_port;
3558                 local_port = saddr->local.v6.sin6_port;
3559
3560         } else {
3561                 cnic_get_v4_route(&saddr->remote.v4, &dst);
3562
3563                 csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
3564                 csk->dst_port = saddr->remote.v4.sin_port;
3565                 local_port = saddr->local.v4.sin_port;
3566         }
3567
3568         csk->vlan_id = 0;
3569         csk->mtu = dev->netdev->mtu;
3570         if (dst && dst->dev) {
3571                 u16 vlan = cnic_get_vlan(dst->dev, &realdev);
3572                 if (realdev == dev->netdev) {
3573                         csk->vlan_id = vlan;
3574                         csk->mtu = dst_mtu(dst);
3575                 }
3576         }
3577
3578         port_id = be16_to_cpu(local_port);
3579         if (port_id >= CNIC_LOCAL_PORT_MIN &&
3580             port_id < CNIC_LOCAL_PORT_MAX) {
3581                 if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
3582                         port_id = 0;
3583         } else
3584                 port_id = 0;
3585
3586         if (!port_id) {
3587                 port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
3588                 if (port_id == -1) {
3589                         rc = -ENOMEM;
3590                         goto err_out;
3591                 }
3592                 local_port = cpu_to_be16(port_id);
3593         }
3594         csk->src_port = local_port;
3595
3596 err_out:
3597         dst_release(dst);
3598         return rc;
3599 }
3600
3601 static void cnic_init_csk_state(struct cnic_sock *csk)
3602 {
3603         csk->state = 0;
3604         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3605         clear_bit(SK_F_CLOSING, &csk->flags);
3606 }
3607
3608 static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
3609 {
3610         struct cnic_local *cp = csk->dev->cnic_priv;
3611         int err = 0;
3612
3613         if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
3614                 return -EOPNOTSUPP;
3615
3616         if (!cnic_in_use(csk))
3617                 return -EINVAL;
3618
3619         if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
3620                 return -EINVAL;
3621
3622         cnic_init_csk_state(csk);
3623
3624         err = cnic_get_route(csk, saddr);
3625         if (err)
3626                 goto err_out;
3627
3628         err = cnic_resolve_addr(csk, saddr);
3629         if (!err)
3630                 return 0;
3631
3632 err_out:
3633         clear_bit(SK_F_CONNECT_START, &csk->flags);
3634         return err;
3635 }
3636
3637 static int cnic_cm_abort(struct cnic_sock *csk)
3638 {
3639         struct cnic_local *cp = csk->dev->cnic_priv;
3640         u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3641
3642         if (!cnic_in_use(csk))
3643                 return -EINVAL;
3644
3645         if (cnic_abort_prep(csk))
3646                 return cnic_cm_abort_req(csk);
3647
3648         /* Getting here means that we haven't started connect, or
3649          * connect was not successful.
3650          */
3651
3652         cp->close_conn(csk, opcode);
3653         if (csk->state != opcode)
3654                 return -EALREADY;
3655
3656         return 0;
3657 }
3658
3659 static int cnic_cm_close(struct cnic_sock *csk)
3660 {
3661         if (!cnic_in_use(csk))
3662                 return -EINVAL;
3663
3664         if (cnic_close_prep(csk)) {
3665                 csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
3666                 return cnic_cm_close_req(csk);
3667         } else {
3668                 return -EALREADY;
3669         }
3670         return 0;
3671 }
3672
3673 static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
3674                            u8 opcode)
3675 {
3676         struct cnic_ulp_ops *ulp_ops;
3677         int ulp_type = csk->ulp_type;
3678
3679         rcu_read_lock();
3680         ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
3681         if (ulp_ops) {
3682                 if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
3683                         ulp_ops->cm_connect_complete(csk);
3684                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3685                         ulp_ops->cm_close_complete(csk);
3686                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
3687                         ulp_ops->cm_remote_abort(csk);
3688                 else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
3689                         ulp_ops->cm_abort_complete(csk);
3690                 else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
3691                         ulp_ops->cm_remote_close(csk);
3692         }
3693         rcu_read_unlock();
3694 }
3695
3696 static int cnic_cm_set_pg(struct cnic_sock *csk)
3697 {
3698         if (cnic_offld_prep(csk)) {
3699                 if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3700                         cnic_cm_update_pg(csk);
3701                 else
3702                         cnic_cm_offload_pg(csk);
3703         }
3704         return 0;
3705 }
3706
3707 static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
3708 {
3709         struct cnic_local *cp = dev->cnic_priv;
3710         u32 l5_cid = kcqe->pg_host_opaque;
3711         u8 opcode = kcqe->op_code;
3712         struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
3713
3714         csk_hold(csk);
3715         if (!cnic_in_use(csk))
3716                 goto done;
3717
3718         if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3719                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3720                 goto done;
3721         }
3722         /* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
3723         if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
3724                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3725                 cnic_cm_upcall(cp, csk,
3726                                L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3727                 goto done;
3728         }
3729
3730         csk->pg_cid = kcqe->pg_cid;
3731         set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
3732         cnic_cm_conn_req(csk);
3733
3734 done:
3735         csk_put(csk);
3736 }
3737
3738 static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
3739 {
3740         struct cnic_local *cp = dev->cnic_priv;
3741         struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
3742         u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
3743         struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
3744
3745         ctx->timestamp = jiffies;
3746         ctx->wait_cond = 1;
3747         wake_up(&ctx->waitq);
3748 }
3749
3750 static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
3751 {
3752         struct cnic_local *cp = dev->cnic_priv;
3753         struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
3754         u8 opcode = l4kcqe->op_code;
3755         u32 l5_cid;
3756         struct cnic_sock *csk;
3757
3758         if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
3759                 cnic_process_fcoe_term_conn(dev, kcqe);
3760                 return;
3761         }
3762         if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
3763             opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
3764                 cnic_cm_process_offld_pg(dev, l4kcqe);
3765                 return;
3766         }
3767
3768         l5_cid = l4kcqe->conn_id;
3769         if (opcode & 0x80)
3770                 l5_cid = l4kcqe->cid;
3771         if (l5_cid >= MAX_CM_SK_TBL_SZ)
3772                 return;
3773
3774         csk = &cp->csk_tbl[l5_cid];
3775         csk_hold(csk);
3776
3777         if (!cnic_in_use(csk)) {
3778                 csk_put(csk);
3779                 return;
3780         }
3781
3782         switch (opcode) {
3783         case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
3784                 if (l4kcqe->status != 0) {
3785                         clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3786                         cnic_cm_upcall(cp, csk,
3787                                        L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
3788                 }
3789                 break;
3790         case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
3791                 if (l4kcqe->status == 0)
3792                         set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3793
3794                 smp_mb__before_clear_bit();
3795                 clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
3796                 cnic_cm_upcall(cp, csk, opcode);
3797                 break;
3798
3799         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3800         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3801         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3802         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3803         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3804                 cp->close_conn(csk, opcode);
3805                 break;
3806
3807         case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3808                 /* after we already sent CLOSE_REQ */
3809                 if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
3810                     !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
3811                     csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
3812                         cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
3813                 else
3814                         cnic_cm_upcall(cp, csk, opcode);
3815                 break;
3816         }
3817         csk_put(csk);
3818 }
3819
3820 static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
3821 {
3822         struct cnic_dev *dev = data;
3823         int i;
3824
3825         for (i = 0; i < num; i++)
3826                 cnic_cm_process_kcqe(dev, kcqe[i]);
3827 }
3828
3829 static struct cnic_ulp_ops cm_ulp_ops = {
3830         .indicate_kcqes         = cnic_cm_indicate_kcqe,
3831 };
3832
3833 static void cnic_cm_free_mem(struct cnic_dev *dev)
3834 {
3835         struct cnic_local *cp = dev->cnic_priv;
3836
3837         kfree(cp->csk_tbl);
3838         cp->csk_tbl = NULL;
3839         cnic_free_id_tbl(&cp->csk_port_tbl);
3840 }
3841
3842 static int cnic_cm_alloc_mem(struct cnic_dev *dev)
3843 {
3844         struct cnic_local *cp = dev->cnic_priv;
3845         u32 port_id;
3846
3847         cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
3848                               GFP_KERNEL);
3849         if (!cp->csk_tbl)
3850                 return -ENOMEM;
3851
3852         port_id = random32();
3853         port_id %= CNIC_LOCAL_PORT_RANGE;
3854         if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3855                              CNIC_LOCAL_PORT_MIN, port_id)) {
3856                 cnic_cm_free_mem(dev);
3857                 return -ENOMEM;
3858         }
3859         return 0;
3860 }
3861
3862 static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
3863 {
3864         if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
3865                 /* Unsolicited RESET_COMP or RESET_RECEIVED */
3866                 opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
3867                 csk->state = opcode;
3868         }
3869
3870         /* 1. If event opcode matches the expected event in csk->state
3871          * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
3872          *    event
3873          * 3. If the expected event is 0, meaning the connection was never
3874          *    never established, we accept the opcode from cm_abort.
3875          */
3876         if (opcode == csk->state || csk->state == 0 ||
3877             csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
3878             csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
3879                 if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
3880                         if (csk->state == 0)
3881                                 csk->state = opcode;
3882                         return 1;
3883                 }
3884         }
3885         return 0;
3886 }
3887
3888 static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
3889 {
3890         struct cnic_dev *dev = csk->dev;
3891         struct cnic_local *cp = dev->cnic_priv;
3892
3893         if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
3894                 cnic_cm_upcall(cp, csk, opcode);
3895                 return;
3896         }
3897
3898         clear_bit(SK_F_CONNECT_START, &csk->flags);
3899         cnic_close_conn(csk);
3900         csk->state = opcode;
3901         cnic_cm_upcall(cp, csk, opcode);
3902 }
3903
3904 static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
3905 {
3906 }
3907
3908 static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
3909 {
3910         u32 seed;
3911
3912         seed = random32();
3913         cnic_ctx_wr(dev, 45, 0, seed);
3914         return 0;
3915 }
3916
3917 static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
3918 {
3919         struct cnic_dev *dev = csk->dev;
3920         struct cnic_local *cp = dev->cnic_priv;
3921         struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
3922         union l5cm_specific_data l5_data;
3923         u32 cmd = 0;
3924         int close_complete = 0;
3925
3926         switch (opcode) {
3927         case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
3928         case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
3929         case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3930                 if (cnic_ready_to_close(csk, opcode)) {
3931                         if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
3932                                 cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
3933                         else
3934                                 close_complete = 1;
3935                 }
3936                 break;
3937         case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
3938                 cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
3939                 break;
3940         case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3941                 close_complete = 1;
3942                 break;
3943         }
3944         if (cmd) {
3945                 memset(&l5_data, 0, sizeof(l5_data));
3946
3947                 cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
3948                                     &l5_data);
3949         } else if (close_complete) {
3950                 ctx->timestamp = jiffies;
3951                 cnic_close_conn(csk);
3952                 cnic_cm_upcall(cp, csk, csk->state);
3953         }
3954 }
3955
3956 static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
3957 {
3958         struct cnic_local *cp = dev->cnic_priv;
3959
3960         if (!cp->ctx_tbl)
3961                 return;
3962
3963         if (!netif_running(dev->netdev))
3964                 return;
3965
3966         cnic_bnx2x_delete_wait(dev, 0);
3967
3968         cancel_delayed_work(&cp->delete_task);
3969         flush_workqueue(cnic_wq);
3970
3971         if (atomic_read(&cp->iscsi_conn) != 0)
3972                 netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
3973                             atomic_read(&cp->iscsi_conn));
3974 }
3975
3976 static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
3977 {
3978         struct cnic_local *cp = dev->cnic_priv;
3979         u32 pfid = cp->pfid;
3980         u32 port = CNIC_PORT(cp);
3981
3982         cnic_init_bnx2x_mac(dev);
3983         cnic_bnx2x_set_tcp_timestamp(dev, 1);
3984
3985         CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3986                   XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
3987
3988         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3989                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
3990         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3991                 XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
3992                 DEF_MAX_DA_COUNT);
3993
3994         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3995                  XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
3996         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3997                  XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
3998         CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3999                  XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4000         CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4001                 XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4002
4003         CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4004                 DEF_MAX_CWND);
4005         return 0;
4006 }
4007
4008 static void cnic_delete_task(struct work_struct *work)
4009 {
4010         struct cnic_local *cp;
4011         struct cnic_dev *dev;
4012         u32 i;
4013         int need_resched = 0;
4014
4015         cp = container_of(work, struct cnic_local, delete_task.work);
4016         dev = cp->dev;
4017
4018         if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
4019                 struct drv_ctl_info info;
4020
4021                 cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
4022
4023                 info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
4024                 cp->ethdev->drv_ctl(dev->netdev, &info);
4025         }
4026
4027         for (i = 0; i < cp->max_cid_space; i++) {
4028                 struct cnic_context *ctx = &cp->ctx_tbl[i];
4029                 int err;
4030
4031                 if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
4032                     !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4033                         continue;
4034
4035                 if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
4036                         need_resched = 1;
4037                         continue;
4038                 }
4039
4040                 if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
4041                         continue;
4042
4043                 err = cnic_bnx2x_destroy_ramrod(dev, i);
4044
4045                 cnic_free_bnx2x_conn_resc(dev, i);
4046                 if (!err) {
4047                         if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
4048                                 atomic_dec(&cp->iscsi_conn);
4049
4050                         clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
4051                 }
4052         }
4053
4054         if (need_resched)
4055                 queue_delayed_work(cnic_wq, &cp->delete_task,
4056                                    msecs_to_jiffies(10));
4057
4058 }
4059
4060 static int cnic_cm_open(struct cnic_dev *dev)
4061 {
4062         struct cnic_local *cp = dev->cnic_priv;
4063         int err;
4064
4065         err = cnic_cm_alloc_mem(dev);
4066         if (err)
4067                 return err;
4068
4069         err = cp->start_cm(dev);
4070
4071         if (err)
4072                 goto err_out;
4073
4074         INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
4075
4076         dev->cm_create = cnic_cm_create;
4077         dev->cm_destroy = cnic_cm_destroy;
4078         dev->cm_connect = cnic_cm_connect;
4079         dev->cm_abort = cnic_cm_abort;
4080         dev->cm_close = cnic_cm_close;
4081         dev->cm_select_dev = cnic_cm_select_dev;
4082
4083         cp->ulp_handle[CNIC_ULP_L4] = dev;
4084         rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
4085         return 0;
4086
4087 err_out:
4088         cnic_cm_free_mem(dev);
4089         return err;
4090 }
4091
4092 static int cnic_cm_shutdown(struct cnic_dev *dev)
4093 {
4094         struct cnic_local *cp = dev->cnic_priv;
4095         int i;
4096
4097         cp->stop_cm(dev);
4098
4099         if (!cp->csk_tbl)
4100                 return 0;
4101
4102         for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
4103                 struct cnic_sock *csk = &cp->csk_tbl[i];
4104
4105                 clear_bit(SK_F_INUSE, &csk->flags);
4106                 cnic_cm_cleanup(csk);
4107         }
4108         cnic_cm_free_mem(dev);
4109
4110         return 0;
4111 }
4112
4113 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
4114 {
4115         u32 cid_addr;
4116         int i;
4117
4118         cid_addr = GET_CID_ADDR(cid);
4119
4120         for (i = 0; i < CTX_SIZE; i += 4)
4121                 cnic_ctx_wr(dev, cid_addr, i, 0);
4122 }
4123
4124 static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
4125 {
4126         struct cnic_local *cp = dev->cnic_priv;
4127         int ret = 0, i;
4128         u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
4129
4130         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4131                 return 0;
4132
4133         for (i = 0; i < cp->ctx_blks; i++) {
4134                 int j;
4135                 u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
4136                 u32 val;
4137
4138                 memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);
4139
4140                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
4141                         (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
4142                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
4143                         (u64) cp->ctx_arr[i].mapping >> 32);
4144                 CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
4145                         BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
4146                 for (j = 0; j < 10; j++) {
4147
4148                         val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
4149                         if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
4150                                 break;
4151                         udelay(5);
4152                 }
4153                 if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
4154                         ret = -EBUSY;
4155                         break;
4156                 }
4157         }
4158         return ret;
4159 }
4160
4161 static void cnic_free_irq(struct cnic_dev *dev)
4162 {
4163         struct cnic_local *cp = dev->cnic_priv;
4164         struct cnic_eth_dev *ethdev = cp->ethdev;
4165
4166         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4167                 cp->disable_int_sync(dev);
4168                 tasklet_kill(&cp->cnic_irq_task);
4169                 free_irq(ethdev->irq_arr[0].vector, dev);
4170         }
4171 }
4172
4173 static int cnic_request_irq(struct cnic_dev *dev)
4174 {
4175         struct cnic_local *cp = dev->cnic_priv;
4176         struct cnic_eth_dev *ethdev = cp->ethdev;
4177         int err;
4178
4179         err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
4180         if (err)
4181                 tasklet_disable(&cp->cnic_irq_task);
4182
4183         return err;
4184 }
4185
4186 static int cnic_init_bnx2_irq(struct cnic_dev *dev)
4187 {
4188         struct cnic_local *cp = dev->cnic_priv;
4189         struct cnic_eth_dev *ethdev = cp->ethdev;
4190
4191         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4192                 int err, i = 0;
4193                 int sblk_num = cp->status_blk_num;
4194                 u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
4195                            BNX2_HC_SB_CONFIG_1;
4196
4197                 CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);
4198
4199                 CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
4200                 CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
4201                 CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);
4202
4203                 cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4204                 tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4205                              (unsigned long) dev);
4206                 err = cnic_request_irq(dev);
4207                 if (err)
4208                         return err;
4209
4210                 while (cp->status_blk.bnx2->status_completion_producer_index &&
4211                        i < 10) {
4212                         CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
4213                                 1 << (11 + sblk_num));
4214                         udelay(10);
4215                         i++;
4216                         barrier();
4217                 }
4218                 if (cp->status_blk.bnx2->status_completion_producer_index) {
4219                         cnic_free_irq(dev);
4220                         goto failed;
4221                 }
4222
4223         } else {
4224                 struct status_block *sblk = cp->status_blk.gen;
4225                 u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
4226                 int i = 0;
4227
4228                 while (sblk->status_completion_producer_index && i < 10) {
4229                         CNIC_WR(dev, BNX2_HC_COMMAND,
4230                                 hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
4231                         udelay(10);
4232                         i++;
4233                         barrier();
4234                 }
4235                 if (sblk->status_completion_producer_index)
4236                         goto failed;
4237
4238         }
4239         return 0;
4240
4241 failed:
4242         netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4243         return -EBUSY;
4244 }
4245
4246 static void cnic_enable_bnx2_int(struct cnic_dev *dev)
4247 {
4248         struct cnic_local *cp = dev->cnic_priv;
4249         struct cnic_eth_dev *ethdev = cp->ethdev;
4250
4251         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4252                 return;
4253
4254         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4255                 BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
4256 }
4257
4258 static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
4259 {
4260         struct cnic_local *cp = dev->cnic_priv;
4261         struct cnic_eth_dev *ethdev = cp->ethdev;
4262
4263         if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
4264                 return;
4265
4266         CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
4267                 BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
4268         CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
4269         synchronize_irq(ethdev->irq_arr[0].vector);
4270 }
4271
4272 static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
4273 {
4274         struct cnic_local *cp = dev->cnic_priv;
4275         struct cnic_eth_dev *ethdev = cp->ethdev;
4276         struct cnic_uio_dev *udev = cp->udev;
4277         u32 cid_addr, tx_cid, sb_id;
4278         u32 val, offset0, offset1, offset2, offset3;
4279         int i;
4280         struct tx_bd *txbd;
4281         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4282         struct status_block *s_blk = cp->status_blk.gen;
4283
4284         sb_id = cp->status_blk_num;
4285         tx_cid = 20;
4286         cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
4287         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4288                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4289
4290                 tx_cid = TX_TSS_CID + sb_id - 1;
4291                 CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
4292                         (TX_TSS_CID << 7));
4293                 cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
4294         }
4295         cp->tx_cons = *cp->tx_cons_ptr;
4296
4297         cid_addr = GET_CID_ADDR(tx_cid);
4298         if (CHIP_NUM(cp) == CHIP_NUM_5709) {
4299                 u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;
4300
4301                 for (i = 0; i < PHY_CTX_SIZE; i += 4)
4302                         cnic_ctx_wr(dev, cid_addr2, i, 0);
4303
4304                 offset0 = BNX2_L2CTX_TYPE_XI;
4305                 offset1 = BNX2_L2CTX_CMD_TYPE_XI;
4306                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
4307                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
4308         } else {
4309                 cnic_init_context(dev, tx_cid);
4310                 cnic_init_context(dev, tx_cid + 1);
4311
4312                 offset0 = BNX2_L2CTX_TYPE;
4313                 offset1 = BNX2_L2CTX_CMD_TYPE;
4314                 offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
4315                 offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
4316         }
4317         val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
4318         cnic_ctx_wr(dev, cid_addr, offset0, val);
4319
4320         val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
4321         cnic_ctx_wr(dev, cid_addr, offset1, val);
4322
4323         txbd = udev->l2_ring;
4324
4325         buf_map = udev->l2_buf_map;
4326         for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
4327                 txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
4328                 txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4329         }
4330         val = (u64) ring_map >> 32;
4331         cnic_ctx_wr(dev, cid_addr, offset2, val);
4332         txbd->tx_bd_haddr_hi = val;
4333
4334         val = (u64) ring_map & 0xffffffff;
4335         cnic_ctx_wr(dev, cid_addr, offset3, val);
4336         txbd->tx_bd_haddr_lo = val;
4337 }
4338
4339 static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
4340 {
4341         struct cnic_local *cp = dev->cnic_priv;
4342         struct cnic_eth_dev *ethdev = cp->ethdev;
4343         struct cnic_uio_dev *udev = cp->udev;
4344         u32 cid_addr, sb_id, val, coal_reg, coal_val;
4345         int i;
4346         struct rx_bd *rxbd;
4347         struct status_block *s_blk = cp->status_blk.gen;
4348         dma_addr_t ring_map = udev->l2_ring_map;
4349
4350         sb_id = cp->status_blk_num;
4351         cnic_init_context(dev, 2);
4352         cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
4353         coal_reg = BNX2_HC_COMMAND;
4354         coal_val = CNIC_RD(dev, coal_reg);
4355         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4356                 struct status_block_msix *sblk = cp->status_blk.bnx2;
4357
4358                 cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
4359                 coal_reg = BNX2_HC_COALESCE_NOW;
4360                 coal_val = 1 << (11 + sb_id);
4361         }
4362         i = 0;
4363         while (!(*cp->rx_cons_ptr != 0) && i < 10) {
4364                 CNIC_WR(dev, coal_reg, coal_val);
4365                 udelay(10);
4366                 i++;
4367                 barrier();
4368         }
4369         cp->rx_cons = *cp->rx_cons_ptr;
4370
4371         cid_addr = GET_CID_ADDR(2);
4372         val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4373               BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4374         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);
4375
4376         if (sb_id == 0)
4377                 val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4378         else
4379                 val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4380         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
4381
4382         rxbd = udev->l2_ring + BCM_PAGE_SIZE;
4383         for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
4384                 dma_addr_t buf_map;
4385                 int n = (i % cp->l2_rx_ring_size) + 1;
4386
4387                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4388                 rxbd->rx_bd_len = cp->l2_single_buf_size;
4389                 rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
4390                 rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
4391                 rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
4392         }
4393         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4394         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
4395         rxbd->rx_bd_haddr_hi = val;
4396
4397         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4398         cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
4399         rxbd->rx_bd_haddr_lo = val;
4400
4401         val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
4402         cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
4403 }
4404
4405 static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
4406 {
4407         struct kwqe *wqes[1], l2kwqe;
4408
4409         memset(&l2kwqe, 0, sizeof(l2kwqe));
4410         wqes[0] = &l2kwqe;
4411         l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4412                               (L2_KWQE_OPCODE_VALUE_FLUSH <<
4413                                KWQE_OPCODE_SHIFT) | 2;
4414         dev->submit_kwqes(dev, wqes, 1);
4415 }
4416
4417 static void cnic_set_bnx2_mac(struct cnic_dev *dev)
4418 {
4419         struct cnic_local *cp = dev->cnic_priv;
4420         u32 val;
4421
4422         val = cp->func << 2;
4423
4424         cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
4425
4426         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4427                               BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
4428         dev->mac_addr[0] = (u8) (val >> 8);
4429         dev->mac_addr[1] = (u8) val;
4430
4431         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
4432
4433         val = cnic_reg_rd_ind(dev, cp->shmem_base +
4434                               BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
4435         dev->mac_addr[2] = (u8) (val >> 24);
4436         dev->mac_addr[3] = (u8) (val >> 16);
4437         dev->mac_addr[4] = (u8) (val >> 8);
4438         dev->mac_addr[5] = (u8) val;
4439
4440         CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
4441
4442         val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4443         if (CHIP_NUM(cp) != CHIP_NUM_5709)
4444                 val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
4445
4446         CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
4447         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
4448         CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
4449 }
4450
4451 static int cnic_start_bnx2_hw(struct cnic_dev *dev)
4452 {
4453         struct cnic_local *cp = dev->cnic_priv;
4454         struct cnic_eth_dev *ethdev = cp->ethdev;
4455         struct status_block *sblk = cp->status_blk.gen;
4456         u32 val, kcq_cid_addr, kwq_cid_addr;
4457         int err;
4458
4459         cnic_set_bnx2_mac(dev);
4460
4461         val = CNIC_RD(dev, BNX2_MQ_CONFIG);
4462         val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4463         if (BCM_PAGE_BITS > 12)
4464                 val |= (12 - 8)  << 4;
4465         else
4466                 val |= (BCM_PAGE_BITS - 8)  << 4;
4467
4468         CNIC_WR(dev, BNX2_MQ_CONFIG, val);
4469
4470         CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
4471         CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
4472         CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);
4473
4474         err = cnic_setup_5709_context(dev, 1);
4475         if (err)
4476                 return err;
4477
4478         cnic_init_context(dev, KWQ_CID);
4479         cnic_init_context(dev, KCQ_CID);
4480
4481         kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4482         cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;
4483
4484         cp->max_kwq_idx = MAX_KWQ_IDX;
4485         cp->kwq_prod_idx = 0;
4486         cp->kwq_con_idx = 0;
4487         set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4488
4489         if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
4490                 cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
4491         else
4492                 cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;
4493
4494         /* Initialize the kernel work queue context. */
4495         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4496               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4497         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4498
4499         val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4500         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4501
4502         val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4503         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4504
4505         val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4506         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4507
4508         val = (u32) cp->kwq_info.pgtbl_map;
4509         cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4510
4511         kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
4512         cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4513
4514         cp->kcq1.sw_prod_idx = 0;
4515         cp->kcq1.hw_prod_idx_ptr =
4516                 (u16 *) &sblk->status_completion_producer_index;
4517
4518         cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
4519
4520         /* Initialize the kernel complete queue context. */
4521         val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4522               (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4523         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4524
4525         val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4526         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4527
4528         val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4529         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4530
4531         val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
4532         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4533
4534         val = (u32) cp->kcq1.dma.pgtbl_map;
4535         cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4536
4537         cp->int_num = 0;
4538         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4539                 struct status_block_msix *msblk = cp->status_blk.bnx2;
4540                 u32 sb_id = cp->status_blk_num;
4541                 u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4542
4543                 cp->kcq1.hw_prod_idx_ptr =
4544                         (u16 *) &msblk->status_completion_producer_index;
4545                 cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
4546                 cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
4547                 cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4548                 cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4549                 cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4550         }
4551
4552         /* Enable Commnad Scheduler notification when we write to the
4553          * host producer index of the kernel contexts. */
4554         CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);
4555
4556         /* Enable Command Scheduler notification when we write to either
4557          * the Send Queue or Receive Queue producer indexes of the kernel
4558          * bypass contexts. */
4559         CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
4560         CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);
4561
4562         /* Notify COM when the driver post an application buffer. */
4563         CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);
4564
4565         /* Set the CP and COM doorbells.  These two processors polls the
4566          * doorbell for a non zero value before running.  This must be done
4567          * after setting up the kernel queue contexts. */
4568         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
4569         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);
4570
4571         cnic_init_bnx2_tx_ring(dev);
4572         cnic_init_bnx2_rx_ring(dev);
4573
4574         err = cnic_init_bnx2_irq(dev);
4575         if (err) {
4576                 netdev_err(dev->netdev, "cnic_init_irq failed\n");
4577                 cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
4578                 cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
4579                 return err;
4580         }
4581
4582         return 0;
4583 }
4584
4585 static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
4586 {
4587         struct cnic_local *cp = dev->cnic_priv;
4588         struct cnic_eth_dev *ethdev = cp->ethdev;
4589         u32 start_offset = ethdev->ctx_tbl_offset;
4590         int i;
4591
4592         for (i = 0; i < cp->ctx_blks; i++) {
4593                 struct cnic_ctx *ctx = &cp->ctx_arr[i];
4594                 dma_addr_t map = ctx->mapping;
4595
4596                 if (cp->ctx_align) {
4597                         unsigned long mask = cp->ctx_align - 1;
4598
4599                         map = (map + mask) & ~mask;
4600                 }
4601
4602                 cnic_ctx_tbl_wr(dev, start_offset + i, map);
4603         }
4604 }
4605
4606 static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
4607 {
4608         struct cnic_local *cp = dev->cnic_priv;
4609         struct cnic_eth_dev *ethdev = cp->ethdev;
4610         int err = 0;
4611
4612         tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4613                      (unsigned long) dev);
4614         if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
4615                 err = cnic_request_irq(dev);
4616
4617         return err;
4618 }
4619
4620 static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
4621                                                 u16 sb_id, u8 sb_index,
4622                                                 u8 disable)
4623 {
4624
4625         u32 addr = BAR_CSTRORM_INTMEM +
4626                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4627                         offsetof(struct hc_status_block_data_e1x, index_data) +
4628                         sizeof(struct hc_index_data)*sb_index +
4629                         offsetof(struct hc_index_data, flags);
4630         u16 flags = CNIC_RD16(dev, addr);
4631         /* clear and set */
4632         flags &= ~HC_INDEX_DATA_HC_ENABLED;
4633         flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
4634                   HC_INDEX_DATA_HC_ENABLED);
4635         CNIC_WR16(dev, addr, flags);
4636 }
4637
4638 static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
4639 {
4640         struct cnic_local *cp = dev->cnic_priv;
4641         u8 sb_id = cp->status_blk_num;
4642
4643         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4644                         CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
4645                         offsetof(struct hc_status_block_data_e1x, index_data) +
4646                         sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4647                         offsetof(struct hc_index_data, timeout), 64 / 4);
4648         cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4649 }
4650
4651 static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
4652 {
4653 }
4654
4655 static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
4656                                     struct client_init_ramrod_data *data)
4657 {
4658         struct cnic_local *cp = dev->cnic_priv;
4659         struct cnic_uio_dev *udev = cp->udev;
4660         union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
4661         dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4662         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4663         int i;
4664         u32 cli = cp->ethdev->iscsi_l2_client_id;
4665         u32 val;
4666
4667         memset(txbd, 0, BCM_PAGE_SIZE);
4668
4669         buf_map = udev->l2_buf_map;
4670         for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4671                 struct eth_tx_start_bd *start_bd = &txbd->start_bd;
4672                 struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
4673
4674                 start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4675                 start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4676                 reg_bd->addr_hi = start_bd->addr_hi;
4677                 reg_bd->addr_lo = start_bd->addr_lo + 0x10;
4678                 start_bd->nbytes = cpu_to_le16(0x10);
4679                 start_bd->nbd = cpu_to_le16(3);
4680                 start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
4681                 start_bd->general_data = (UNICAST_ADDRESS <<
4682                         ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
4683                 start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
4684
4685         }
4686
4687         val = (u64) ring_map >> 32;
4688         txbd->next_bd.addr_hi = cpu_to_le32(val);
4689
4690         data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4691
4692         val = (u64) ring_map & 0xffffffff;
4693         txbd->next_bd.addr_lo = cpu_to_le32(val);
4694
4695         data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4696
4697         /* Other ramrod params */
4698         data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
4699         data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4700
4701         /* reset xstorm per client statistics */
4702         if (cli < MAX_STAT_COUNTER_ID) {
4703                 data->general.statistics_zero_flg = 1;
4704                 data->general.statistics_en_flg = 1;
4705                 data->general.statistics_counter_id = cli;
4706         }
4707
4708         cp->tx_cons_ptr =
4709                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4710 }
4711
4712 static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
4713                                     struct client_init_ramrod_data *data)
4714 {
4715         struct cnic_local *cp = dev->cnic_priv;
4716         struct cnic_uio_dev *udev = cp->udev;
4717         struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4718                                 BCM_PAGE_SIZE);
4719         struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4720                                 (udev->l2_ring + (2 * BCM_PAGE_SIZE));
4721         struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4722         int i;
4723         u32 cli = cp->ethdev->iscsi_l2_client_id;
4724         int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4725         u32 val;
4726         dma_addr_t ring_map = udev->l2_ring_map;
4727
4728         /* General data */
4729         data->general.client_id = cli;
4730         data->general.activate_flg = 1;
4731         data->general.sp_client_id = cli;
4732         data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
4733         data->general.func_id = cp->pfid;
4734
4735         for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
4736                 dma_addr_t buf_map;
4737                 int n = (i % cp->l2_rx_ring_size) + 1;
4738
4739                 buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4740                 rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
4741                 rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
4742         }
4743
4744         val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4745         rxbd->addr_hi = cpu_to_le32(val);
4746         data->rx.bd_page_base.hi = cpu_to_le32(val);
4747
4748         val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4749         rxbd->addr_lo = cpu_to_le32(val);
4750         data->rx.bd_page_base.lo = cpu_to_le32(val);
4751
4752         rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4753         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4754         rxcqe->addr_hi = cpu_to_le32(val);
4755         data->rx.cqe_page_base.hi = cpu_to_le32(val);
4756
4757         val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4758         rxcqe->addr_lo = cpu_to_le32(val);
4759         data->rx.cqe_page_base.lo = cpu_to_le32(val);
4760
4761         /* Other ramrod params */
4762         data->rx.client_qzone_id = cl_qzone_id;
4763         data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
4764         data->rx.status_block_id = BNX2X_DEF_SB_ID;
4765
4766         data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4767
4768         data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
4769         data->rx.outer_vlan_removal_enable_flg = 1;
4770         data->rx.silent_vlan_removal_flg = 1;
4771         data->rx.silent_vlan_value = 0;
4772         data->rx.silent_vlan_mask = 0xffff;
4773
4774         cp->rx_cons_ptr =
4775                 &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4776         cp->rx_cons = *cp->rx_cons_ptr;
4777 }
4778
4779 static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
4780 {
4781         struct cnic_local *cp = dev->cnic_priv;
4782         u32 pfid = cp->pfid;
4783
4784         cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4785                            CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4786         cp->kcq1.sw_prod_idx = 0;
4787
4788         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4789                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4790
4791                 cp->kcq1.hw_prod_idx_ptr =
4792                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4793                 cp->kcq1.status_idx_ptr =
4794                         &sb->sb.running_index[SM_RX_ID];
4795         } else {
4796                 struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
4797
4798                 cp->kcq1.hw_prod_idx_ptr =
4799                         &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4800                 cp->kcq1.status_idx_ptr =
4801                         &sb->sb.running_index[SM_RX_ID];
4802         }
4803
4804         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4805                 struct host_hc_status_block_e2 *sb = cp->status_blk.gen;
4806
4807                 cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
4808                                         USTORM_FCOE_EQ_PROD_OFFSET(pfid);
4809                 cp->kcq2.sw_prod_idx = 0;
4810                 cp->kcq2.hw_prod_idx_ptr =
4811                         &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
4812                 cp->kcq2.status_idx_ptr =
4813                         &sb->sb.running_index[SM_RX_ID];
4814         }
4815 }
4816
4817 static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
4818 {
4819         struct cnic_local *cp = dev->cnic_priv;
4820         struct cnic_eth_dev *ethdev = cp->ethdev;
4821         int func = CNIC_FUNC(cp), ret;
4822         u32 pfid;
4823
4824         cp->port_mode = CHIP_PORT_MODE_NONE;
4825
4826         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4827                 u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);
4828
4829                 if (!(val & 1))
4830                         val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN);
4831                 else
4832                         val = (val >> 1) & 1;
4833
4834                 if (val) {
4835                         cp->port_mode = CHIP_4_PORT_MODE;
4836                         cp->pfid = func >> 1;
4837                 } else {
4838                         cp->port_mode = CHIP_2_PORT_MODE;
4839                         cp->pfid = func & 0x6;
4840                 }
4841         } else {
4842                 cp->pfid = func;
4843         }
4844         pfid = cp->pfid;
4845
4846         ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4847                                cp->iscsi_start_cid, 0);
4848
4849         if (ret)
4850                 return -ENOMEM;
4851
4852         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4853                 ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl,
4854                                         BNX2X_FCOE_NUM_CONNECTIONS,
4855                                         cp->fcoe_start_cid, 0);
4856
4857                 if (ret)
4858                         return -ENOMEM;
4859         }
4860
4861         cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
4862
4863         cnic_init_bnx2x_kcq(dev);
4864
4865         /* Only 1 EQ */
4866         CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
4867         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4868                 CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
4869         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4870                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
4871                 cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
4872         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4873                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
4874                 (u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
4875         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4876                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
4877                 cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
4878         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4879                 CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
4880                 (u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
4881         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4882                 CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
4883         CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4884                 CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
4885         CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4886                 CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
4887                 HC_INDEX_ISCSI_EQ_CONS);
4888
4889         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4890                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
4891                 cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
4892         CNIC_WR(dev, BAR_USTRORM_INTMEM +
4893                 USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
4894                 (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
4895
4896         CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4897                 TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
4898
4899         cnic_setup_bnx2x_context(dev);
4900
4901         ret = cnic_init_bnx2x_irq(dev);
4902         if (ret)
4903                 return ret;
4904
4905         return 0;
4906 }
4907
4908 static void cnic_init_rings(struct cnic_dev *dev)
4909 {
4910         struct cnic_local *cp = dev->cnic_priv;
4911         struct cnic_uio_dev *udev = cp->udev;
4912
4913         if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4914                 return;
4915
4916         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4917                 cnic_init_bnx2_tx_ring(dev);
4918                 cnic_init_bnx2_rx_ring(dev);
4919                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4920         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4921                 u32 cli = cp->ethdev->iscsi_l2_client_id;
4922                 u32 cid = cp->ethdev->iscsi_l2_cid;
4923                 u32 cl_qzone_id;
4924                 struct client_init_ramrod_data *data;
4925                 union l5cm_specific_data l5_data;
4926                 struct ustorm_eth_rx_producers rx_prods = {0};
4927                 u32 off, i, *cid_ptr;
4928
4929                 rx_prods.bd_prod = 0;
4930                 rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
4931                 barrier();
4932
4933                 cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4934
4935                 off = BAR_USTRORM_INTMEM +
4936                         (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) ?
4937                          USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
4938                          USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
4939
4940                 for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4941                         CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4942
4943                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4944
4945                 data = udev->l2_buf;
4946                 cid_ptr = udev->l2_buf + 12;
4947
4948                 memset(data, 0, sizeof(*data));
4949
4950                 cnic_init_bnx2x_tx_ring(dev, data);
4951                 cnic_init_bnx2x_rx_ring(dev, data);
4952
4953                 l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
4954                 l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
4955
4956                 set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4957
4958                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4959                         cid, ETH_CONNECTION_TYPE, &l5_data);
4960
4961                 i = 0;
4962                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
4963                        ++i < 10)
4964                         msleep(1);
4965
4966                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
4967                         netdev_err(dev->netdev,
4968                                 "iSCSI CLIENT_SETUP did not complete\n");
4969                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4970                 cnic_ring_ctl(dev, cid, cli, 1);
4971                 *cid_ptr = cid;
4972         }
4973 }
4974
4975 static void cnic_shutdown_rings(struct cnic_dev *dev)
4976 {
4977         struct cnic_local *cp = dev->cnic_priv;
4978         struct cnic_uio_dev *udev = cp->udev;
4979         void *rx_ring;
4980
4981         if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
4982                 return;
4983
4984         if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
4985                 cnic_shutdown_bnx2_rx_ring(dev);
4986         } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
4987                 u32 cli = cp->ethdev->iscsi_l2_client_id;
4988                 u32 cid = cp->ethdev->iscsi_l2_cid;
4989                 union l5cm_specific_data l5_data;
4990                 int i;
4991
4992                 cnic_ring_ctl(dev, cid, cli, 0);
4993
4994                 set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
4995
4996                 l5_data.phy_address.lo = cli;
4997                 l5_data.phy_address.hi = 0;
4998                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
4999                         cid, ETH_CONNECTION_TYPE, &l5_data);
5000                 i = 0;
5001                 while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
5002                        ++i < 10)
5003                         msleep(1);
5004
5005                 if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
5006                         netdev_err(dev->netdev,
5007                                 "iSCSI CLIENT_HALT did not complete\n");
5008                 cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5009
5010                 memset(&l5_data, 0, sizeof(l5_data));
5011                 cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5012                         cid, NONE_CONNECTION_TYPE, &l5_data);
5013                 msleep(10);
5014         }
5015         clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5016         rx_ring = udev->l2_ring + BCM_PAGE_SIZE;
5017         memset(rx_ring, 0, BCM_PAGE_SIZE);
5018 }
5019
5020 static int cnic_register_netdev(struct cnic_dev *dev)
5021 {
5022         struct cnic_local *cp = dev->cnic_priv;
5023         struct cnic_eth_dev *ethdev = cp->ethdev;
5024         int err;
5025
5026         if (!ethdev)
5027                 return -ENODEV;
5028
5029         if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
5030                 return 0;
5031
5032         err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5033         if (err)
5034                 netdev_err(dev->netdev, "register_cnic failed\n");
5035
5036         return err;
5037 }
5038
5039 static void cnic_unregister_netdev(struct cnic_dev *dev)
5040 {
5041         struct cnic_local *cp = dev->cnic_priv;
5042         struct cnic_eth_dev *ethdev = cp->ethdev;
5043
5044         if (!ethdev)
5045                 return;
5046
5047         ethdev->drv_unregister_cnic(dev->netdev);
5048 }
5049
5050 static int cnic_start_hw(struct cnic_dev *dev)
5051 {
5052         struct cnic_local *cp = dev->cnic_priv;
5053         struct cnic_eth_dev *ethdev = cp->ethdev;
5054         int err;
5055
5056         if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
5057                 return -EALREADY;
5058
5059         dev->regview = ethdev->io_base;
5060         pci_dev_get(dev->pcidev);
5061         cp->func = PCI_FUNC(dev->pcidev->devfn);
5062         cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5063         cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
5064
5065         err = cp->alloc_resc(dev);
5066         if (err) {
5067                 netdev_err(dev->netdev, "allocate resource failure\n");
5068                 goto err1;
5069         }
5070
5071         err = cp->start_hw(dev);
5072         if (err)
5073                 goto err1;
5074
5075         err = cnic_cm_open(dev);
5076         if (err)
5077                 goto err1;
5078
5079         set_bit(CNIC_F_CNIC_UP, &dev->flags);
5080
5081         cp->enable_int(dev);
5082
5083         return 0;
5084
5085 err1:
5086         cp->free_resc(dev);
5087         pci_dev_put(dev->pcidev);
5088         return err;
5089 }
5090
5091 static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
5092 {
5093         cnic_disable_bnx2_int_sync(dev);
5094
5095         cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
5096         cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
5097
5098         cnic_init_context(dev, KWQ_CID);
5099         cnic_init_context(dev, KCQ_CID);
5100
5101         cnic_setup_5709_context(dev, 0);
5102         cnic_free_irq(dev);
5103
5104         cnic_free_resc(dev);
5105 }
5106
5107
5108 static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
5109 {
5110         struct cnic_local *cp = dev->cnic_priv;
5111
5112         cnic_free_irq(dev);
5113         *cp->kcq1.hw_prod_idx_ptr = 0;
5114         CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5115                 CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5116         CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5117         cnic_free_resc(dev);
5118 }
5119
5120 static void cnic_stop_hw(struct cnic_dev *dev)
5121 {
5122         if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5123                 struct cnic_local *cp = dev->cnic_priv;
5124                 int i = 0;
5125
5126                 /* Need to wait for the ring shutdown event to complete
5127                  * before clearing the CNIC_UP flag.
5128                  */
5129                 while (cp->udev->uio_dev != -1 && i < 15) {
5130                         msleep(100);
5131                         i++;
5132                 }
5133                 cnic_shutdown_rings(dev);
5134                 clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5135                 rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
5136                 synchronize_rcu();
5137                 cnic_cm_shutdown(dev);
5138                 cp->stop_hw(dev);
5139                 pci_dev_put(dev->pcidev);
5140         }
5141 }
5142
5143 static void cnic_free_dev(struct cnic_dev *dev)
5144 {
5145         int i = 0;
5146
5147         while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
5148                 msleep(100);
5149                 i++;
5150         }
5151         if (atomic_read(&dev->ref_count) != 0)
5152                 netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5153
5154         netdev_info(dev->netdev, "Removed CNIC device\n");
5155         dev_put(dev->netdev);
5156         kfree(dev);
5157 }
5158
5159 static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
5160                                        struct pci_dev *pdev)
5161 {
5162         struct cnic_dev *cdev;
5163         struct cnic_local *cp;
5164         int alloc_size;
5165
5166         alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);
5167
5168         cdev = kzalloc(alloc_size , GFP_KERNEL);
5169         if (cdev == NULL) {
5170                 netdev_err(dev, "allocate dev struct failure\n");
5171                 return NULL;
5172         }
5173
5174         cdev->netdev = dev;
5175         cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
5176         cdev->register_device = cnic_register_device;
5177         cdev->unregister_device = cnic_unregister_device;
5178         cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;
5179
5180         cp = cdev->cnic_priv;
5181         cp->dev = cdev;
5182         cp->l2_single_buf_size = 0x400;
5183         cp->l2_rx_ring_size = 3;
5184
5185         spin_lock_init(&cp->cnic_ulp_lock);
5186
5187         netdev_info(dev, "Added CNIC device\n");
5188
5189         return cdev;
5190 }
5191
5192 static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
5193 {
5194         struct pci_dev *pdev;
5195         struct cnic_dev *cdev;
5196         struct cnic_local *cp;
5197         struct cnic_eth_dev *ethdev = NULL;
5198         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5199
5200         probe = symbol_get(bnx2_cnic_probe);
5201         if (probe) {
5202                 ethdev = (*probe)(dev);
5203                 symbol_put(bnx2_cnic_probe);
5204         }
5205         if (!ethdev)
5206                 return NULL;
5207
5208         pdev = ethdev->pdev;
5209         if (!pdev)
5210                 return NULL;
5211
5212         dev_hold(dev);
5213         pci_dev_get(pdev);
5214         if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
5215              pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
5216             (pdev->revision < 0x10)) {
5217                 pci_dev_put(pdev);
5218                 goto cnic_err;
5219         }
5220         pci_dev_put(pdev);
5221
5222         cdev = cnic_alloc_dev(dev, pdev);
5223         if (cdev == NULL)
5224                 goto cnic_err;
5225
5226         set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
5227         cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
5228
5229         cp = cdev->cnic_priv;
5230         cp->ethdev = ethdev;
5231         cdev->pcidev = pdev;
5232         cp->chip_id = ethdev->chip_id;
5233
5234         cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5235
5236         cp->cnic_ops = &cnic_bnx2_ops;
5237         cp->start_hw = cnic_start_bnx2_hw;
5238         cp->stop_hw = cnic_stop_bnx2_hw;
5239         cp->setup_pgtbl = cnic_setup_page_tbl;
5240         cp->alloc_resc = cnic_alloc_bnx2_resc;
5241         cp->free_resc = cnic_free_resc;
5242         cp->start_cm = cnic_cm_init_bnx2_hw;
5243         cp->stop_cm = cnic_cm_stop_bnx2_hw;
5244         cp->enable_int = cnic_enable_bnx2_int;
5245         cp->disable_int_sync = cnic_disable_bnx2_int_sync;
5246         cp->close_conn = cnic_close_bnx2_conn;
5247         return cdev;
5248
5249 cnic_err:
5250         dev_put(dev);
5251         return NULL;
5252 }
5253
5254 static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
5255 {
5256         struct pci_dev *pdev;
5257         struct cnic_dev *cdev;
5258         struct cnic_local *cp;
5259         struct cnic_eth_dev *ethdev = NULL;
5260         struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5261
5262         probe = symbol_get(bnx2x_cnic_probe);
5263         if (probe) {
5264                 ethdev = (*probe)(dev);
5265                 symbol_put(bnx2x_cnic_probe);
5266         }
5267         if (!ethdev)
5268                 return NULL;
5269
5270         pdev = ethdev->pdev;
5271         if (!pdev)
5272                 return NULL;
5273
5274         dev_hold(dev);
5275         cdev = cnic_alloc_dev(dev, pdev);
5276         if (cdev == NULL) {
5277                 dev_put(dev);
5278                 return NULL;
5279         }
5280
5281         set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
5282         cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
5283
5284         cp = cdev->cnic_priv;
5285         cp->ethdev = ethdev;
5286         cdev->pcidev = pdev;
5287         cp->chip_id = ethdev->chip_id;
5288
5289         if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
5290                 cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5291         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
5292             !(ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE))
5293                 cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5294
5295         memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);
5296
5297         cp->cnic_ops = &cnic_bnx2x_ops;
5298         cp->start_hw = cnic_start_bnx2x_hw;
5299         cp->stop_hw = cnic_stop_bnx2x_hw;
5300         cp->setup_pgtbl = cnic_setup_page_tbl_le;
5301         cp->alloc_resc = cnic_alloc_bnx2x_resc;
5302         cp->free_resc = cnic_free_resc;
5303         cp->start_cm = cnic_cm_init_bnx2x_hw;
5304         cp->stop_cm = cnic_cm_stop_bnx2x_hw;
5305         cp->enable_int = cnic_enable_bnx2x_int;
5306         cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5307         if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
5308                 cp->ack_int = cnic_ack_bnx2x_e2_msix;
5309         else
5310                 cp->ack_int = cnic_ack_bnx2x_msix;
5311         cp->close_conn = cnic_close_bnx2x_conn;
5312         return cdev;
5313 }
5314
5315 static struct cnic_dev *is_cnic_dev(struct net_device *dev)
5316 {
5317         struct ethtool_drvinfo drvinfo;
5318         struct cnic_dev *cdev = NULL;
5319
5320         if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
5321                 memset(&drvinfo, 0, sizeof(drvinfo));
5322                 dev->ethtool_ops->get_drvinfo(dev, &drvinfo);
5323
5324                 if (!strcmp(drvinfo.driver, "bnx2"))
5325                         cdev = init_bnx2_cnic(dev);
5326                 if (!strcmp(drvinfo.driver, "bnx2x"))
5327                         cdev = init_bnx2x_cnic(dev);
5328                 if (cdev) {
5329                         write_lock(&cnic_dev_lock);
5330                         list_add(&cdev->list, &cnic_dev_list);
5331                         write_unlock(&cnic_dev_lock);
5332                 }
5333         }
5334         return cdev;
5335 }
5336
5337 static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
5338                               u16 vlan_id)
5339 {
5340         int if_type;
5341
5342         rcu_read_lock();
5343         for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
5344                 struct cnic_ulp_ops *ulp_ops;
5345                 void *ctx;
5346
5347                 ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
5348                 if (!ulp_ops || !ulp_ops->indicate_netevent)
5349                         continue;
5350
5351                 ctx = cp->ulp_handle[if_type];
5352
5353                 ulp_ops->indicate_netevent(ctx, event, vlan_id);
5354         }
5355         rcu_read_unlock();
5356 }
5357
5358 /**
5359  * netdev event handler
5360  */
5361 static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
5362                                                          void *ptr)
5363 {
5364         struct net_device *netdev = ptr;
5365         struct cnic_dev *dev;
5366         int new_dev = 0;
5367
5368         dev = cnic_from_netdev(netdev);
5369
5370         if (!dev && (event == NETDEV_REGISTER || netif_running(netdev))) {
5371                 /* Check for the hot-plug device */
5372                 dev = is_cnic_dev(netdev);
5373                 if (dev) {
5374                         new_dev = 1;
5375                         cnic_hold(dev);
5376                 }
5377         }
5378         if (dev) {
5379                 struct cnic_local *cp = dev->cnic_priv;
5380
5381                 if (new_dev)
5382                         cnic_ulp_init(dev);
5383                 else if (event == NETDEV_UNREGISTER)
5384                         cnic_ulp_exit(dev);
5385
5386                 if (event == NETDEV_UP || (new_dev && netif_running(netdev))) {
5387                         if (cnic_register_netdev(dev) != 0) {
5388                                 cnic_put(dev);
5389                                 goto done;
5390                         }
5391                         if (!cnic_start_hw(dev))
5392                                 cnic_ulp_start(dev);
5393                 }
5394
5395                 cnic_rcv_netevent(cp, event, 0);
5396
5397                 if (event == NETDEV_GOING_DOWN) {
5398                         cnic_ulp_stop(dev);
5399                         cnic_stop_hw(dev);
5400                         cnic_unregister_netdev(dev);
5401                 } else if (event == NETDEV_UNREGISTER) {
5402                         write_lock(&cnic_dev_lock);
5403                         list_del_init(&dev->list);
5404                         write_unlock(&cnic_dev_lock);
5405
5406                         cnic_put(dev);
5407                         cnic_free_dev(dev);
5408                         goto done;
5409                 }
5410                 cnic_put(dev);
5411         } else {
5412                 struct net_device *realdev;
5413                 u16 vid;
5414
5415                 vid = cnic_get_vlan(netdev, &realdev);
5416                 if (realdev) {
5417                         dev = cnic_from_netdev(realdev);
5418                         if (dev) {
5419                                 vid |= VLAN_TAG_PRESENT;
5420                                 cnic_rcv_netevent(dev->cnic_priv, event, vid);
5421                                 cnic_put(dev);
5422                         }
5423                 }
5424         }
5425 done:
5426         return NOTIFY_DONE;
5427 }
5428
5429 static struct notifier_block cnic_netdev_notifier = {
5430         .notifier_call = cnic_netdev_event
5431 };
5432
5433 static void cnic_release(void)
5434 {
5435         struct cnic_dev *dev;
5436         struct cnic_uio_dev *udev;
5437
5438         while (!list_empty(&cnic_dev_list)) {
5439                 dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
5440                 if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
5441                         cnic_ulp_stop(dev);
5442                         cnic_stop_hw(dev);
5443                 }
5444
5445                 cnic_ulp_exit(dev);
5446                 cnic_unregister_netdev(dev);
5447                 list_del_init(&dev->list);
5448                 cnic_free_dev(dev);
5449         }
5450         while (!list_empty(&cnic_udev_list)) {
5451                 udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
5452                                   list);
5453                 cnic_free_uio(udev);
5454         }
5455 }
5456
5457 static int __init cnic_init(void)
5458 {
5459         int rc = 0;
5460
5461         pr_info("%s", version);
5462
5463         rc = register_netdevice_notifier(&cnic_netdev_notifier);
5464         if (rc) {
5465                 cnic_release();
5466                 return rc;
5467         }
5468
5469         cnic_wq = create_singlethread_workqueue("cnic_wq");
5470         if (!cnic_wq) {
5471                 cnic_release();
5472                 unregister_netdevice_notifier(&cnic_netdev_notifier);
5473                 return -ENOMEM;
5474         }
5475
5476         return 0;
5477 }
5478
5479 static void __exit cnic_exit(void)
5480 {
5481         unregister_netdevice_notifier(&cnic_netdev_notifier);
5482         cnic_release();
5483         destroy_workqueue(cnic_wq);
5484 }
5485
5486 module_init(cnic_init);
5487 module_exit(cnic_exit);