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a4636960 MC |
1 | /* cnic.c: Broadcom CNIC core network driver. |
2 | * | |
3 | * Copyright (c) 2006-2009 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 | #include <linux/module.h> | |
14 | ||
15 | #include <linux/kernel.h> | |
16 | #include <linux/errno.h> | |
17 | #include <linux/list.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/pci.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/netdevice.h> | |
22 | #include <linux/uio_driver.h> | |
23 | #include <linux/in.h> | |
24 | #include <linux/dma-mapping.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/ethtool.h> | |
27 | #include <linux/if_vlan.h> | |
28 | #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) | |
29 | #define BCM_VLAN 1 | |
30 | #endif | |
31 | #include <net/ip.h> | |
32 | #include <net/tcp.h> | |
33 | #include <net/route.h> | |
34 | #include <net/ipv6.h> | |
35 | #include <net/ip6_route.h> | |
36 | #include <scsi/iscsi_if.h> | |
37 | ||
38 | #include "cnic_if.h" | |
39 | #include "bnx2.h" | |
40 | #include "cnic.h" | |
41 | #include "cnic_defs.h" | |
42 | ||
43 | #define DRV_MODULE_NAME "cnic" | |
44 | #define PFX DRV_MODULE_NAME ": " | |
45 | ||
46 | static char version[] __devinitdata = | |
47 | "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n"; | |
48 | ||
49 | MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) " | |
50 | "Chen (zongxi@broadcom.com"); | |
51 | MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver"); | |
52 | MODULE_LICENSE("GPL"); | |
53 | MODULE_VERSION(CNIC_MODULE_VERSION); | |
54 | ||
55 | static LIST_HEAD(cnic_dev_list); | |
56 | static DEFINE_RWLOCK(cnic_dev_lock); | |
57 | static DEFINE_MUTEX(cnic_lock); | |
58 | ||
59 | static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE]; | |
60 | ||
61 | static int cnic_service_bnx2(void *, void *); | |
62 | static int cnic_ctl(void *, struct cnic_ctl_info *); | |
63 | ||
64 | static struct cnic_ops cnic_bnx2_ops = { | |
65 | .cnic_owner = THIS_MODULE, | |
66 | .cnic_handler = cnic_service_bnx2, | |
67 | .cnic_ctl = cnic_ctl, | |
68 | }; | |
69 | ||
70 | static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *); | |
71 | static void cnic_init_bnx2_tx_ring(struct cnic_dev *); | |
72 | static void cnic_init_bnx2_rx_ring(struct cnic_dev *); | |
73 | static int cnic_cm_set_pg(struct cnic_sock *); | |
74 | ||
75 | static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode) | |
76 | { | |
77 | struct cnic_dev *dev = uinfo->priv; | |
78 | struct cnic_local *cp = dev->cnic_priv; | |
79 | ||
80 | if (!capable(CAP_NET_ADMIN)) | |
81 | return -EPERM; | |
82 | ||
83 | if (cp->uio_dev != -1) | |
84 | return -EBUSY; | |
85 | ||
86 | cp->uio_dev = iminor(inode); | |
87 | ||
88 | cnic_shutdown_bnx2_rx_ring(dev); | |
89 | ||
90 | cnic_init_bnx2_tx_ring(dev); | |
91 | cnic_init_bnx2_rx_ring(dev); | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
96 | static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode) | |
97 | { | |
98 | struct cnic_dev *dev = uinfo->priv; | |
99 | struct cnic_local *cp = dev->cnic_priv; | |
100 | ||
101 | cp->uio_dev = -1; | |
102 | return 0; | |
103 | } | |
104 | ||
105 | static inline void cnic_hold(struct cnic_dev *dev) | |
106 | { | |
107 | atomic_inc(&dev->ref_count); | |
108 | } | |
109 | ||
110 | static inline void cnic_put(struct cnic_dev *dev) | |
111 | { | |
112 | atomic_dec(&dev->ref_count); | |
113 | } | |
114 | ||
115 | static inline void csk_hold(struct cnic_sock *csk) | |
116 | { | |
117 | atomic_inc(&csk->ref_count); | |
118 | } | |
119 | ||
120 | static inline void csk_put(struct cnic_sock *csk) | |
121 | { | |
122 | atomic_dec(&csk->ref_count); | |
123 | } | |
124 | ||
125 | static struct cnic_dev *cnic_from_netdev(struct net_device *netdev) | |
126 | { | |
127 | struct cnic_dev *cdev; | |
128 | ||
129 | read_lock(&cnic_dev_lock); | |
130 | list_for_each_entry(cdev, &cnic_dev_list, list) { | |
131 | if (netdev == cdev->netdev) { | |
132 | cnic_hold(cdev); | |
133 | read_unlock(&cnic_dev_lock); | |
134 | return cdev; | |
135 | } | |
136 | } | |
137 | read_unlock(&cnic_dev_lock); | |
138 | return NULL; | |
139 | } | |
140 | ||
141 | static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val) | |
142 | { | |
143 | struct cnic_local *cp = dev->cnic_priv; | |
144 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
145 | struct drv_ctl_info info; | |
146 | struct drv_ctl_io *io = &info.data.io; | |
147 | ||
148 | info.cmd = DRV_CTL_CTX_WR_CMD; | |
149 | io->cid_addr = cid_addr; | |
150 | io->offset = off; | |
151 | io->data = val; | |
152 | ethdev->drv_ctl(dev->netdev, &info); | |
153 | } | |
154 | ||
155 | static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val) | |
156 | { | |
157 | struct cnic_local *cp = dev->cnic_priv; | |
158 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
159 | struct drv_ctl_info info; | |
160 | struct drv_ctl_io *io = &info.data.io; | |
161 | ||
162 | info.cmd = DRV_CTL_IO_WR_CMD; | |
163 | io->offset = off; | |
164 | io->data = val; | |
165 | ethdev->drv_ctl(dev->netdev, &info); | |
166 | } | |
167 | ||
168 | static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off) | |
169 | { | |
170 | struct cnic_local *cp = dev->cnic_priv; | |
171 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
172 | struct drv_ctl_info info; | |
173 | struct drv_ctl_io *io = &info.data.io; | |
174 | ||
175 | info.cmd = DRV_CTL_IO_RD_CMD; | |
176 | io->offset = off; | |
177 | ethdev->drv_ctl(dev->netdev, &info); | |
178 | return io->data; | |
179 | } | |
180 | ||
181 | static int cnic_in_use(struct cnic_sock *csk) | |
182 | { | |
183 | return test_bit(SK_F_INUSE, &csk->flags); | |
184 | } | |
185 | ||
186 | static void cnic_kwq_completion(struct cnic_dev *dev, u32 count) | |
187 | { | |
188 | struct cnic_local *cp = dev->cnic_priv; | |
189 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
190 | struct drv_ctl_info info; | |
191 | ||
192 | info.cmd = DRV_CTL_COMPLETION_CMD; | |
193 | info.data.comp.comp_count = count; | |
194 | ethdev->drv_ctl(dev->netdev, &info); | |
195 | } | |
196 | ||
197 | static int cnic_send_nlmsg(struct cnic_local *cp, u32 type, | |
198 | struct cnic_sock *csk) | |
199 | { | |
200 | struct iscsi_path path_req; | |
201 | char *buf = NULL; | |
202 | u16 len = 0; | |
203 | u32 msg_type = ISCSI_KEVENT_IF_DOWN; | |
204 | struct cnic_ulp_ops *ulp_ops; | |
205 | ||
206 | if (cp->uio_dev == -1) | |
207 | return -ENODEV; | |
208 | ||
209 | if (csk) { | |
210 | len = sizeof(path_req); | |
211 | buf = (char *) &path_req; | |
212 | memset(&path_req, 0, len); | |
213 | ||
214 | msg_type = ISCSI_KEVENT_PATH_REQ; | |
215 | path_req.handle = (u64) csk->l5_cid; | |
216 | if (test_bit(SK_F_IPV6, &csk->flags)) { | |
217 | memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0], | |
218 | sizeof(struct in6_addr)); | |
219 | path_req.ip_addr_len = 16; | |
220 | } else { | |
221 | memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0], | |
222 | sizeof(struct in_addr)); | |
223 | path_req.ip_addr_len = 4; | |
224 | } | |
225 | path_req.vlan_id = csk->vlan_id; | |
226 | path_req.pmtu = csk->mtu; | |
227 | } | |
228 | ||
229 | rcu_read_lock(); | |
230 | ulp_ops = rcu_dereference(cp->ulp_ops[CNIC_ULP_ISCSI]); | |
231 | if (ulp_ops) | |
232 | ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len); | |
233 | rcu_read_unlock(); | |
234 | return 0; | |
235 | } | |
236 | ||
237 | static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type, | |
238 | char *buf, u16 len) | |
239 | { | |
240 | int rc = -EINVAL; | |
241 | ||
242 | switch (msg_type) { | |
243 | case ISCSI_UEVENT_PATH_UPDATE: { | |
244 | struct cnic_local *cp; | |
245 | u32 l5_cid; | |
246 | struct cnic_sock *csk; | |
247 | struct iscsi_path *path_resp; | |
248 | ||
249 | if (len < sizeof(*path_resp)) | |
250 | break; | |
251 | ||
252 | path_resp = (struct iscsi_path *) buf; | |
253 | cp = dev->cnic_priv; | |
254 | l5_cid = (u32) path_resp->handle; | |
255 | if (l5_cid >= MAX_CM_SK_TBL_SZ) | |
256 | break; | |
257 | ||
258 | csk = &cp->csk_tbl[l5_cid]; | |
259 | csk_hold(csk); | |
260 | if (cnic_in_use(csk)) { | |
261 | memcpy(csk->ha, path_resp->mac_addr, 6); | |
262 | if (test_bit(SK_F_IPV6, &csk->flags)) | |
263 | memcpy(&csk->src_ip[0], &path_resp->src.v6_addr, | |
264 | sizeof(struct in6_addr)); | |
265 | else | |
266 | memcpy(&csk->src_ip[0], &path_resp->src.v4_addr, | |
267 | sizeof(struct in_addr)); | |
268 | if (is_valid_ether_addr(csk->ha)) | |
269 | cnic_cm_set_pg(csk); | |
270 | } | |
271 | csk_put(csk); | |
272 | rc = 0; | |
273 | } | |
274 | } | |
275 | ||
276 | return rc; | |
277 | } | |
278 | ||
279 | static int cnic_offld_prep(struct cnic_sock *csk) | |
280 | { | |
281 | if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) | |
282 | return 0; | |
283 | ||
284 | if (!test_bit(SK_F_CONNECT_START, &csk->flags)) { | |
285 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); | |
286 | return 0; | |
287 | } | |
288 | ||
289 | return 1; | |
290 | } | |
291 | ||
292 | static int cnic_close_prep(struct cnic_sock *csk) | |
293 | { | |
294 | clear_bit(SK_F_CONNECT_START, &csk->flags); | |
295 | smp_mb__after_clear_bit(); | |
296 | ||
297 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { | |
298 | while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) | |
299 | msleep(1); | |
300 | ||
301 | return 1; | |
302 | } | |
303 | return 0; | |
304 | } | |
305 | ||
306 | static int cnic_abort_prep(struct cnic_sock *csk) | |
307 | { | |
308 | clear_bit(SK_F_CONNECT_START, &csk->flags); | |
309 | smp_mb__after_clear_bit(); | |
310 | ||
311 | while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) | |
312 | msleep(1); | |
313 | ||
314 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { | |
315 | csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; | |
316 | return 1; | |
317 | } | |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
322 | int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops) | |
323 | { | |
324 | struct cnic_dev *dev; | |
325 | ||
326 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { | |
327 | printk(KERN_ERR PFX "cnic_register_driver: Bad type %d\n", | |
328 | ulp_type); | |
329 | return -EINVAL; | |
330 | } | |
331 | mutex_lock(&cnic_lock); | |
332 | if (cnic_ulp_tbl[ulp_type]) { | |
333 | printk(KERN_ERR PFX "cnic_register_driver: Type %d has already " | |
334 | "been registered\n", ulp_type); | |
335 | mutex_unlock(&cnic_lock); | |
336 | return -EBUSY; | |
337 | } | |
338 | ||
339 | read_lock(&cnic_dev_lock); | |
340 | list_for_each_entry(dev, &cnic_dev_list, list) { | |
341 | struct cnic_local *cp = dev->cnic_priv; | |
342 | ||
343 | clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]); | |
344 | } | |
345 | read_unlock(&cnic_dev_lock); | |
346 | ||
347 | rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops); | |
348 | mutex_unlock(&cnic_lock); | |
349 | ||
350 | /* Prevent race conditions with netdev_event */ | |
351 | rtnl_lock(); | |
352 | read_lock(&cnic_dev_lock); | |
353 | list_for_each_entry(dev, &cnic_dev_list, list) { | |
354 | struct cnic_local *cp = dev->cnic_priv; | |
355 | ||
356 | if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type])) | |
357 | ulp_ops->cnic_init(dev); | |
358 | } | |
359 | read_unlock(&cnic_dev_lock); | |
360 | rtnl_unlock(); | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
365 | int cnic_unregister_driver(int ulp_type) | |
366 | { | |
367 | struct cnic_dev *dev; | |
368 | ||
369 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { | |
370 | printk(KERN_ERR PFX "cnic_unregister_driver: Bad type %d\n", | |
371 | ulp_type); | |
372 | return -EINVAL; | |
373 | } | |
374 | mutex_lock(&cnic_lock); | |
375 | if (!cnic_ulp_tbl[ulp_type]) { | |
376 | printk(KERN_ERR PFX "cnic_unregister_driver: Type %d has not " | |
377 | "been registered\n", ulp_type); | |
378 | goto out_unlock; | |
379 | } | |
380 | read_lock(&cnic_dev_lock); | |
381 | list_for_each_entry(dev, &cnic_dev_list, list) { | |
382 | struct cnic_local *cp = dev->cnic_priv; | |
383 | ||
384 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { | |
385 | printk(KERN_ERR PFX "cnic_unregister_driver: Type %d " | |
386 | "still has devices registered\n", ulp_type); | |
387 | read_unlock(&cnic_dev_lock); | |
388 | goto out_unlock; | |
389 | } | |
390 | } | |
391 | read_unlock(&cnic_dev_lock); | |
392 | ||
393 | rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL); | |
394 | ||
395 | mutex_unlock(&cnic_lock); | |
396 | synchronize_rcu(); | |
397 | return 0; | |
398 | ||
399 | out_unlock: | |
400 | mutex_unlock(&cnic_lock); | |
401 | return -EINVAL; | |
402 | } | |
403 | ||
404 | static int cnic_start_hw(struct cnic_dev *); | |
405 | static void cnic_stop_hw(struct cnic_dev *); | |
406 | ||
407 | static int cnic_register_device(struct cnic_dev *dev, int ulp_type, | |
408 | void *ulp_ctx) | |
409 | { | |
410 | struct cnic_local *cp = dev->cnic_priv; | |
411 | struct cnic_ulp_ops *ulp_ops; | |
412 | ||
413 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { | |
414 | printk(KERN_ERR PFX "cnic_register_device: Bad type %d\n", | |
415 | ulp_type); | |
416 | return -EINVAL; | |
417 | } | |
418 | mutex_lock(&cnic_lock); | |
419 | if (cnic_ulp_tbl[ulp_type] == NULL) { | |
420 | printk(KERN_ERR PFX "cnic_register_device: Driver with type %d " | |
421 | "has not been registered\n", ulp_type); | |
422 | mutex_unlock(&cnic_lock); | |
423 | return -EAGAIN; | |
424 | } | |
425 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { | |
426 | printk(KERN_ERR PFX "cnic_register_device: Type %d has already " | |
427 | "been registered to this device\n", ulp_type); | |
428 | mutex_unlock(&cnic_lock); | |
429 | return -EBUSY; | |
430 | } | |
431 | ||
432 | clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]); | |
433 | cp->ulp_handle[ulp_type] = ulp_ctx; | |
434 | ulp_ops = cnic_ulp_tbl[ulp_type]; | |
435 | rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops); | |
436 | cnic_hold(dev); | |
437 | ||
438 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) | |
439 | if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type])) | |
440 | ulp_ops->cnic_start(cp->ulp_handle[ulp_type]); | |
441 | ||
442 | mutex_unlock(&cnic_lock); | |
443 | ||
444 | return 0; | |
445 | ||
446 | } | |
447 | EXPORT_SYMBOL(cnic_register_driver); | |
448 | ||
449 | static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type) | |
450 | { | |
451 | struct cnic_local *cp = dev->cnic_priv; | |
452 | ||
453 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { | |
454 | printk(KERN_ERR PFX "cnic_unregister_device: Bad type %d\n", | |
455 | ulp_type); | |
456 | return -EINVAL; | |
457 | } | |
458 | mutex_lock(&cnic_lock); | |
459 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { | |
460 | rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL); | |
461 | cnic_put(dev); | |
462 | } else { | |
463 | printk(KERN_ERR PFX "cnic_unregister_device: device not " | |
464 | "registered to this ulp type %d\n", ulp_type); | |
465 | mutex_unlock(&cnic_lock); | |
466 | return -EINVAL; | |
467 | } | |
468 | mutex_unlock(&cnic_lock); | |
469 | ||
470 | synchronize_rcu(); | |
471 | ||
472 | return 0; | |
473 | } | |
474 | EXPORT_SYMBOL(cnic_unregister_driver); | |
475 | ||
476 | static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id) | |
477 | { | |
478 | id_tbl->start = start_id; | |
479 | id_tbl->max = size; | |
480 | id_tbl->next = 0; | |
481 | spin_lock_init(&id_tbl->lock); | |
482 | id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL); | |
483 | if (!id_tbl->table) | |
484 | return -ENOMEM; | |
485 | ||
486 | return 0; | |
487 | } | |
488 | ||
489 | static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl) | |
490 | { | |
491 | kfree(id_tbl->table); | |
492 | id_tbl->table = NULL; | |
493 | } | |
494 | ||
495 | static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id) | |
496 | { | |
497 | int ret = -1; | |
498 | ||
499 | id -= id_tbl->start; | |
500 | if (id >= id_tbl->max) | |
501 | return ret; | |
502 | ||
503 | spin_lock(&id_tbl->lock); | |
504 | if (!test_bit(id, id_tbl->table)) { | |
505 | set_bit(id, id_tbl->table); | |
506 | ret = 0; | |
507 | } | |
508 | spin_unlock(&id_tbl->lock); | |
509 | return ret; | |
510 | } | |
511 | ||
512 | /* Returns -1 if not successful */ | |
513 | static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl) | |
514 | { | |
515 | u32 id; | |
516 | ||
517 | spin_lock(&id_tbl->lock); | |
518 | id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); | |
519 | if (id >= id_tbl->max) { | |
520 | id = -1; | |
521 | if (id_tbl->next != 0) { | |
522 | id = find_first_zero_bit(id_tbl->table, id_tbl->next); | |
523 | if (id >= id_tbl->next) | |
524 | id = -1; | |
525 | } | |
526 | } | |
527 | ||
528 | if (id < id_tbl->max) { | |
529 | set_bit(id, id_tbl->table); | |
530 | id_tbl->next = (id + 1) & (id_tbl->max - 1); | |
531 | id += id_tbl->start; | |
532 | } | |
533 | ||
534 | spin_unlock(&id_tbl->lock); | |
535 | ||
536 | return id; | |
537 | } | |
538 | ||
539 | static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id) | |
540 | { | |
541 | if (id == -1) | |
542 | return; | |
543 | ||
544 | id -= id_tbl->start; | |
545 | if (id >= id_tbl->max) | |
546 | return; | |
547 | ||
548 | clear_bit(id, id_tbl->table); | |
549 | } | |
550 | ||
551 | static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma) | |
552 | { | |
553 | int i; | |
554 | ||
555 | if (!dma->pg_arr) | |
556 | return; | |
557 | ||
558 | for (i = 0; i < dma->num_pages; i++) { | |
559 | if (dma->pg_arr[i]) { | |
560 | pci_free_consistent(dev->pcidev, BCM_PAGE_SIZE, | |
561 | dma->pg_arr[i], dma->pg_map_arr[i]); | |
562 | dma->pg_arr[i] = NULL; | |
563 | } | |
564 | } | |
565 | if (dma->pgtbl) { | |
566 | pci_free_consistent(dev->pcidev, dma->pgtbl_size, | |
567 | dma->pgtbl, dma->pgtbl_map); | |
568 | dma->pgtbl = NULL; | |
569 | } | |
570 | kfree(dma->pg_arr); | |
571 | dma->pg_arr = NULL; | |
572 | dma->num_pages = 0; | |
573 | } | |
574 | ||
575 | static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma) | |
576 | { | |
577 | int i; | |
578 | u32 *page_table = dma->pgtbl; | |
579 | ||
580 | for (i = 0; i < dma->num_pages; i++) { | |
581 | /* Each entry needs to be in big endian format. */ | |
582 | *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32); | |
583 | page_table++; | |
584 | *page_table = (u32) dma->pg_map_arr[i]; | |
585 | page_table++; | |
586 | } | |
587 | } | |
588 | ||
589 | static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma, | |
590 | int pages, int use_pg_tbl) | |
591 | { | |
592 | int i, size; | |
593 | struct cnic_local *cp = dev->cnic_priv; | |
594 | ||
595 | size = pages * (sizeof(void *) + sizeof(dma_addr_t)); | |
596 | dma->pg_arr = kzalloc(size, GFP_ATOMIC); | |
597 | if (dma->pg_arr == NULL) | |
598 | return -ENOMEM; | |
599 | ||
600 | dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages); | |
601 | dma->num_pages = pages; | |
602 | ||
603 | for (i = 0; i < pages; i++) { | |
604 | dma->pg_arr[i] = pci_alloc_consistent(dev->pcidev, | |
605 | BCM_PAGE_SIZE, | |
606 | &dma->pg_map_arr[i]); | |
607 | if (dma->pg_arr[i] == NULL) | |
608 | goto error; | |
609 | } | |
610 | if (!use_pg_tbl) | |
611 | return 0; | |
612 | ||
613 | dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) & | |
614 | ~(BCM_PAGE_SIZE - 1); | |
615 | dma->pgtbl = pci_alloc_consistent(dev->pcidev, dma->pgtbl_size, | |
616 | &dma->pgtbl_map); | |
617 | if (dma->pgtbl == NULL) | |
618 | goto error; | |
619 | ||
620 | cp->setup_pgtbl(dev, dma); | |
621 | ||
622 | return 0; | |
623 | ||
624 | error: | |
625 | cnic_free_dma(dev, dma); | |
626 | return -ENOMEM; | |
627 | } | |
628 | ||
629 | static void cnic_free_resc(struct cnic_dev *dev) | |
630 | { | |
631 | struct cnic_local *cp = dev->cnic_priv; | |
632 | int i = 0; | |
633 | ||
634 | if (cp->cnic_uinfo) { | |
635 | cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); | |
636 | while (cp->uio_dev != -1 && i < 15) { | |
637 | msleep(100); | |
638 | i++; | |
639 | } | |
640 | uio_unregister_device(cp->cnic_uinfo); | |
641 | kfree(cp->cnic_uinfo); | |
642 | cp->cnic_uinfo = NULL; | |
643 | } | |
644 | ||
645 | if (cp->l2_buf) { | |
646 | pci_free_consistent(dev->pcidev, cp->l2_buf_size, | |
647 | cp->l2_buf, cp->l2_buf_map); | |
648 | cp->l2_buf = NULL; | |
649 | } | |
650 | ||
651 | if (cp->l2_ring) { | |
652 | pci_free_consistent(dev->pcidev, cp->l2_ring_size, | |
653 | cp->l2_ring, cp->l2_ring_map); | |
654 | cp->l2_ring = NULL; | |
655 | } | |
656 | ||
657 | for (i = 0; i < cp->ctx_blks; i++) { | |
658 | if (cp->ctx_arr[i].ctx) { | |
659 | pci_free_consistent(dev->pcidev, cp->ctx_blk_size, | |
660 | cp->ctx_arr[i].ctx, | |
661 | cp->ctx_arr[i].mapping); | |
662 | cp->ctx_arr[i].ctx = NULL; | |
663 | } | |
664 | } | |
665 | kfree(cp->ctx_arr); | |
666 | cp->ctx_arr = NULL; | |
667 | cp->ctx_blks = 0; | |
668 | ||
669 | cnic_free_dma(dev, &cp->gbl_buf_info); | |
670 | cnic_free_dma(dev, &cp->conn_buf_info); | |
671 | cnic_free_dma(dev, &cp->kwq_info); | |
672 | cnic_free_dma(dev, &cp->kcq_info); | |
673 | kfree(cp->iscsi_tbl); | |
674 | cp->iscsi_tbl = NULL; | |
675 | kfree(cp->ctx_tbl); | |
676 | cp->ctx_tbl = NULL; | |
677 | ||
678 | cnic_free_id_tbl(&cp->cid_tbl); | |
679 | } | |
680 | ||
681 | static int cnic_alloc_context(struct cnic_dev *dev) | |
682 | { | |
683 | struct cnic_local *cp = dev->cnic_priv; | |
684 | ||
685 | if (CHIP_NUM(cp) == CHIP_NUM_5709) { | |
686 | int i, k, arr_size; | |
687 | ||
688 | cp->ctx_blk_size = BCM_PAGE_SIZE; | |
689 | cp->cids_per_blk = BCM_PAGE_SIZE / 128; | |
690 | arr_size = BNX2_MAX_CID / cp->cids_per_blk * | |
691 | sizeof(struct cnic_ctx); | |
692 | cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL); | |
693 | if (cp->ctx_arr == NULL) | |
694 | return -ENOMEM; | |
695 | ||
696 | k = 0; | |
697 | for (i = 0; i < 2; i++) { | |
698 | u32 j, reg, off, lo, hi; | |
699 | ||
700 | if (i == 0) | |
701 | off = BNX2_PG_CTX_MAP; | |
702 | else | |
703 | off = BNX2_ISCSI_CTX_MAP; | |
704 | ||
705 | reg = cnic_reg_rd_ind(dev, off); | |
706 | lo = reg >> 16; | |
707 | hi = reg & 0xffff; | |
708 | for (j = lo; j < hi; j += cp->cids_per_blk, k++) | |
709 | cp->ctx_arr[k].cid = j; | |
710 | } | |
711 | ||
712 | cp->ctx_blks = k; | |
713 | if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) { | |
714 | cp->ctx_blks = 0; | |
715 | return -ENOMEM; | |
716 | } | |
717 | ||
718 | for (i = 0; i < cp->ctx_blks; i++) { | |
719 | cp->ctx_arr[i].ctx = | |
720 | pci_alloc_consistent(dev->pcidev, BCM_PAGE_SIZE, | |
721 | &cp->ctx_arr[i].mapping); | |
722 | if (cp->ctx_arr[i].ctx == NULL) | |
723 | return -ENOMEM; | |
724 | } | |
725 | } | |
726 | return 0; | |
727 | } | |
728 | ||
729 | static int cnic_alloc_bnx2_resc(struct cnic_dev *dev) | |
730 | { | |
731 | struct cnic_local *cp = dev->cnic_priv; | |
732 | struct uio_info *uinfo; | |
733 | int ret; | |
734 | ||
735 | ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1); | |
736 | if (ret) | |
737 | goto error; | |
738 | cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr; | |
739 | ||
740 | ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1); | |
741 | if (ret) | |
742 | goto error; | |
743 | cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr; | |
744 | ||
745 | ret = cnic_alloc_context(dev); | |
746 | if (ret) | |
747 | goto error; | |
748 | ||
749 | cp->l2_ring_size = 2 * BCM_PAGE_SIZE; | |
750 | cp->l2_ring = pci_alloc_consistent(dev->pcidev, cp->l2_ring_size, | |
751 | &cp->l2_ring_map); | |
752 | if (!cp->l2_ring) | |
753 | goto error; | |
754 | ||
755 | cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size; | |
756 | cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size); | |
757 | cp->l2_buf = pci_alloc_consistent(dev->pcidev, cp->l2_buf_size, | |
758 | &cp->l2_buf_map); | |
759 | if (!cp->l2_buf) | |
760 | goto error; | |
761 | ||
762 | uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC); | |
763 | if (!uinfo) | |
764 | goto error; | |
765 | ||
766 | uinfo->mem[0].addr = dev->netdev->base_addr; | |
767 | uinfo->mem[0].internal_addr = dev->regview; | |
768 | uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start; | |
769 | uinfo->mem[0].memtype = UIO_MEM_PHYS; | |
770 | ||
771 | uinfo->mem[1].addr = (unsigned long) cp->status_blk & PAGE_MASK; | |
772 | if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) | |
773 | uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9; | |
774 | else | |
775 | uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE; | |
776 | uinfo->mem[1].memtype = UIO_MEM_LOGICAL; | |
777 | ||
778 | uinfo->mem[2].addr = (unsigned long) cp->l2_ring; | |
779 | uinfo->mem[2].size = cp->l2_ring_size; | |
780 | uinfo->mem[2].memtype = UIO_MEM_LOGICAL; | |
781 | ||
782 | uinfo->mem[3].addr = (unsigned long) cp->l2_buf; | |
783 | uinfo->mem[3].size = cp->l2_buf_size; | |
784 | uinfo->mem[3].memtype = UIO_MEM_LOGICAL; | |
785 | ||
786 | uinfo->name = "bnx2_cnic"; | |
787 | uinfo->version = CNIC_MODULE_VERSION; | |
788 | uinfo->irq = UIO_IRQ_CUSTOM; | |
789 | ||
790 | uinfo->open = cnic_uio_open; | |
791 | uinfo->release = cnic_uio_close; | |
792 | ||
793 | uinfo->priv = dev; | |
794 | ||
795 | ret = uio_register_device(&dev->pcidev->dev, uinfo); | |
796 | if (ret) { | |
797 | kfree(uinfo); | |
798 | goto error; | |
799 | } | |
800 | ||
801 | cp->cnic_uinfo = uinfo; | |
802 | ||
803 | return 0; | |
804 | ||
805 | error: | |
806 | cnic_free_resc(dev); | |
807 | return ret; | |
808 | } | |
809 | ||
810 | static inline u32 cnic_kwq_avail(struct cnic_local *cp) | |
811 | { | |
812 | return cp->max_kwq_idx - | |
813 | ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx); | |
814 | } | |
815 | ||
816 | static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[], | |
817 | u32 num_wqes) | |
818 | { | |
819 | struct cnic_local *cp = dev->cnic_priv; | |
820 | struct kwqe *prod_qe; | |
821 | u16 prod, sw_prod, i; | |
822 | ||
823 | if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) | |
824 | return -EAGAIN; /* bnx2 is down */ | |
825 | ||
826 | spin_lock_bh(&cp->cnic_ulp_lock); | |
827 | if (num_wqes > cnic_kwq_avail(cp) && | |
828 | !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) { | |
829 | spin_unlock_bh(&cp->cnic_ulp_lock); | |
830 | return -EAGAIN; | |
831 | } | |
832 | ||
833 | cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT; | |
834 | ||
835 | prod = cp->kwq_prod_idx; | |
836 | sw_prod = prod & MAX_KWQ_IDX; | |
837 | for (i = 0; i < num_wqes; i++) { | |
838 | prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)]; | |
839 | memcpy(prod_qe, wqes[i], sizeof(struct kwqe)); | |
840 | prod++; | |
841 | sw_prod = prod & MAX_KWQ_IDX; | |
842 | } | |
843 | cp->kwq_prod_idx = prod; | |
844 | ||
845 | CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx); | |
846 | ||
847 | spin_unlock_bh(&cp->cnic_ulp_lock); | |
848 | return 0; | |
849 | } | |
850 | ||
851 | static void service_kcqes(struct cnic_dev *dev, int num_cqes) | |
852 | { | |
853 | struct cnic_local *cp = dev->cnic_priv; | |
854 | int i, j; | |
855 | ||
856 | i = 0; | |
857 | j = 1; | |
858 | while (num_cqes) { | |
859 | struct cnic_ulp_ops *ulp_ops; | |
860 | int ulp_type; | |
861 | u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag; | |
862 | u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK; | |
863 | ||
864 | if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION)) | |
865 | cnic_kwq_completion(dev, 1); | |
866 | ||
867 | while (j < num_cqes) { | |
868 | u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag; | |
869 | ||
870 | if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer) | |
871 | break; | |
872 | ||
873 | if (unlikely(next_op & KCQE_RAMROD_COMPLETION)) | |
874 | cnic_kwq_completion(dev, 1); | |
875 | j++; | |
876 | } | |
877 | ||
878 | if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA) | |
879 | ulp_type = CNIC_ULP_RDMA; | |
880 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI) | |
881 | ulp_type = CNIC_ULP_ISCSI; | |
882 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4) | |
883 | ulp_type = CNIC_ULP_L4; | |
884 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2) | |
885 | goto end; | |
886 | else { | |
887 | printk(KERN_ERR PFX "%s: Unknown type of KCQE(0x%x)\n", | |
888 | dev->netdev->name, kcqe_op_flag); | |
889 | goto end; | |
890 | } | |
891 | ||
892 | rcu_read_lock(); | |
893 | ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); | |
894 | if (likely(ulp_ops)) { | |
895 | ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type], | |
896 | cp->completed_kcq + i, j); | |
897 | } | |
898 | rcu_read_unlock(); | |
899 | end: | |
900 | num_cqes -= j; | |
901 | i += j; | |
902 | j = 1; | |
903 | } | |
904 | return; | |
905 | } | |
906 | ||
907 | static u16 cnic_bnx2_next_idx(u16 idx) | |
908 | { | |
909 | return idx + 1; | |
910 | } | |
911 | ||
912 | static u16 cnic_bnx2_hw_idx(u16 idx) | |
913 | { | |
914 | return idx; | |
915 | } | |
916 | ||
917 | static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod) | |
918 | { | |
919 | struct cnic_local *cp = dev->cnic_priv; | |
920 | u16 i, ri, last; | |
921 | struct kcqe *kcqe; | |
922 | int kcqe_cnt = 0, last_cnt = 0; | |
923 | ||
924 | i = ri = last = *sw_prod; | |
925 | ri &= MAX_KCQ_IDX; | |
926 | ||
927 | while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) { | |
928 | kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)]; | |
929 | cp->completed_kcq[kcqe_cnt++] = kcqe; | |
930 | i = cp->next_idx(i); | |
931 | ri = i & MAX_KCQ_IDX; | |
932 | if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) { | |
933 | last_cnt = kcqe_cnt; | |
934 | last = i; | |
935 | } | |
936 | } | |
937 | ||
938 | *sw_prod = last; | |
939 | return last_cnt; | |
940 | } | |
941 | ||
942 | static void cnic_chk_bnx2_pkt_rings(struct cnic_local *cp) | |
943 | { | |
944 | u16 rx_cons = *cp->rx_cons_ptr; | |
945 | u16 tx_cons = *cp->tx_cons_ptr; | |
946 | ||
947 | if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) { | |
948 | cp->tx_cons = tx_cons; | |
949 | cp->rx_cons = rx_cons; | |
950 | uio_event_notify(cp->cnic_uinfo); | |
951 | } | |
952 | } | |
953 | ||
954 | static int cnic_service_bnx2(void *data, void *status_blk) | |
955 | { | |
956 | struct cnic_dev *dev = data; | |
957 | struct status_block *sblk = status_blk; | |
958 | struct cnic_local *cp = dev->cnic_priv; | |
959 | u32 status_idx = sblk->status_idx; | |
960 | u16 hw_prod, sw_prod; | |
961 | int kcqe_cnt; | |
962 | ||
963 | if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) | |
964 | return status_idx; | |
965 | ||
966 | cp->kwq_con_idx = *cp->kwq_con_idx_ptr; | |
967 | ||
968 | hw_prod = sblk->status_completion_producer_index; | |
969 | sw_prod = cp->kcq_prod_idx; | |
970 | while (sw_prod != hw_prod) { | |
971 | kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); | |
972 | if (kcqe_cnt == 0) | |
973 | goto done; | |
974 | ||
975 | service_kcqes(dev, kcqe_cnt); | |
976 | ||
977 | /* Tell compiler that status_blk fields can change. */ | |
978 | barrier(); | |
979 | if (status_idx != sblk->status_idx) { | |
980 | status_idx = sblk->status_idx; | |
981 | cp->kwq_con_idx = *cp->kwq_con_idx_ptr; | |
982 | hw_prod = sblk->status_completion_producer_index; | |
983 | } else | |
984 | break; | |
985 | } | |
986 | ||
987 | done: | |
988 | CNIC_WR16(dev, cp->kcq_io_addr, sw_prod); | |
989 | ||
990 | cp->kcq_prod_idx = sw_prod; | |
991 | ||
992 | cnic_chk_bnx2_pkt_rings(cp); | |
993 | return status_idx; | |
994 | } | |
995 | ||
996 | static void cnic_service_bnx2_msix(unsigned long data) | |
997 | { | |
998 | struct cnic_dev *dev = (struct cnic_dev *) data; | |
999 | struct cnic_local *cp = dev->cnic_priv; | |
1000 | struct status_block_msix *status_blk = cp->bnx2_status_blk; | |
1001 | u32 status_idx = status_blk->status_idx; | |
1002 | u16 hw_prod, sw_prod; | |
1003 | int kcqe_cnt; | |
1004 | ||
1005 | cp->kwq_con_idx = status_blk->status_cmd_consumer_index; | |
1006 | ||
1007 | hw_prod = status_blk->status_completion_producer_index; | |
1008 | sw_prod = cp->kcq_prod_idx; | |
1009 | while (sw_prod != hw_prod) { | |
1010 | kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); | |
1011 | if (kcqe_cnt == 0) | |
1012 | goto done; | |
1013 | ||
1014 | service_kcqes(dev, kcqe_cnt); | |
1015 | ||
1016 | /* Tell compiler that status_blk fields can change. */ | |
1017 | barrier(); | |
1018 | if (status_idx != status_blk->status_idx) { | |
1019 | status_idx = status_blk->status_idx; | |
1020 | cp->kwq_con_idx = status_blk->status_cmd_consumer_index; | |
1021 | hw_prod = status_blk->status_completion_producer_index; | |
1022 | } else | |
1023 | break; | |
1024 | } | |
1025 | ||
1026 | done: | |
1027 | CNIC_WR16(dev, cp->kcq_io_addr, sw_prod); | |
1028 | cp->kcq_prod_idx = sw_prod; | |
1029 | ||
1030 | cnic_chk_bnx2_pkt_rings(cp); | |
1031 | ||
1032 | cp->last_status_idx = status_idx; | |
1033 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | | |
1034 | BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); | |
1035 | } | |
1036 | ||
1037 | static irqreturn_t cnic_irq(int irq, void *dev_instance) | |
1038 | { | |
1039 | struct cnic_dev *dev = dev_instance; | |
1040 | struct cnic_local *cp = dev->cnic_priv; | |
1041 | u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX; | |
1042 | ||
1043 | if (cp->ack_int) | |
1044 | cp->ack_int(dev); | |
1045 | ||
1046 | prefetch(cp->status_blk); | |
1047 | prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]); | |
1048 | ||
1049 | if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) | |
1050 | tasklet_schedule(&cp->cnic_irq_task); | |
1051 | ||
1052 | return IRQ_HANDLED; | |
1053 | } | |
1054 | ||
1055 | static void cnic_ulp_stop(struct cnic_dev *dev) | |
1056 | { | |
1057 | struct cnic_local *cp = dev->cnic_priv; | |
1058 | int if_type; | |
1059 | ||
1060 | rcu_read_lock(); | |
1061 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { | |
1062 | struct cnic_ulp_ops *ulp_ops; | |
1063 | ||
1064 | ulp_ops = rcu_dereference(cp->ulp_ops[if_type]); | |
1065 | if (!ulp_ops) | |
1066 | continue; | |
1067 | ||
1068 | if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type])) | |
1069 | ulp_ops->cnic_stop(cp->ulp_handle[if_type]); | |
1070 | } | |
1071 | rcu_read_unlock(); | |
1072 | } | |
1073 | ||
1074 | static void cnic_ulp_start(struct cnic_dev *dev) | |
1075 | { | |
1076 | struct cnic_local *cp = dev->cnic_priv; | |
1077 | int if_type; | |
1078 | ||
1079 | rcu_read_lock(); | |
1080 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { | |
1081 | struct cnic_ulp_ops *ulp_ops; | |
1082 | ||
1083 | ulp_ops = rcu_dereference(cp->ulp_ops[if_type]); | |
1084 | if (!ulp_ops || !ulp_ops->cnic_start) | |
1085 | continue; | |
1086 | ||
1087 | if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type])) | |
1088 | ulp_ops->cnic_start(cp->ulp_handle[if_type]); | |
1089 | } | |
1090 | rcu_read_unlock(); | |
1091 | } | |
1092 | ||
1093 | static int cnic_ctl(void *data, struct cnic_ctl_info *info) | |
1094 | { | |
1095 | struct cnic_dev *dev = data; | |
1096 | ||
1097 | switch (info->cmd) { | |
1098 | case CNIC_CTL_STOP_CMD: | |
1099 | cnic_hold(dev); | |
1100 | mutex_lock(&cnic_lock); | |
1101 | ||
1102 | cnic_ulp_stop(dev); | |
1103 | cnic_stop_hw(dev); | |
1104 | ||
1105 | mutex_unlock(&cnic_lock); | |
1106 | cnic_put(dev); | |
1107 | break; | |
1108 | case CNIC_CTL_START_CMD: | |
1109 | cnic_hold(dev); | |
1110 | mutex_lock(&cnic_lock); | |
1111 | ||
1112 | if (!cnic_start_hw(dev)) | |
1113 | cnic_ulp_start(dev); | |
1114 | ||
1115 | mutex_unlock(&cnic_lock); | |
1116 | cnic_put(dev); | |
1117 | break; | |
1118 | default: | |
1119 | return -EINVAL; | |
1120 | } | |
1121 | return 0; | |
1122 | } | |
1123 | ||
1124 | static void cnic_ulp_init(struct cnic_dev *dev) | |
1125 | { | |
1126 | int i; | |
1127 | struct cnic_local *cp = dev->cnic_priv; | |
1128 | ||
1129 | rcu_read_lock(); | |
1130 | for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) { | |
1131 | struct cnic_ulp_ops *ulp_ops; | |
1132 | ||
1133 | ulp_ops = rcu_dereference(cnic_ulp_tbl[i]); | |
1134 | if (!ulp_ops || !ulp_ops->cnic_init) | |
1135 | continue; | |
1136 | ||
1137 | if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i])) | |
1138 | ulp_ops->cnic_init(dev); | |
1139 | ||
1140 | } | |
1141 | rcu_read_unlock(); | |
1142 | } | |
1143 | ||
1144 | static void cnic_ulp_exit(struct cnic_dev *dev) | |
1145 | { | |
1146 | int i; | |
1147 | struct cnic_local *cp = dev->cnic_priv; | |
1148 | ||
1149 | rcu_read_lock(); | |
1150 | for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) { | |
1151 | struct cnic_ulp_ops *ulp_ops; | |
1152 | ||
1153 | ulp_ops = rcu_dereference(cnic_ulp_tbl[i]); | |
1154 | if (!ulp_ops || !ulp_ops->cnic_exit) | |
1155 | continue; | |
1156 | ||
1157 | if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i])) | |
1158 | ulp_ops->cnic_exit(dev); | |
1159 | ||
1160 | } | |
1161 | rcu_read_unlock(); | |
1162 | } | |
1163 | ||
1164 | static int cnic_cm_offload_pg(struct cnic_sock *csk) | |
1165 | { | |
1166 | struct cnic_dev *dev = csk->dev; | |
1167 | struct l4_kwq_offload_pg *l4kwqe; | |
1168 | struct kwqe *wqes[1]; | |
1169 | ||
1170 | l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1; | |
1171 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1172 | wqes[0] = (struct kwqe *) l4kwqe; | |
1173 | ||
1174 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG; | |
1175 | l4kwqe->flags = | |
1176 | L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT; | |
1177 | l4kwqe->l2hdr_nbytes = ETH_HLEN; | |
1178 | ||
1179 | l4kwqe->da0 = csk->ha[0]; | |
1180 | l4kwqe->da1 = csk->ha[1]; | |
1181 | l4kwqe->da2 = csk->ha[2]; | |
1182 | l4kwqe->da3 = csk->ha[3]; | |
1183 | l4kwqe->da4 = csk->ha[4]; | |
1184 | l4kwqe->da5 = csk->ha[5]; | |
1185 | ||
1186 | l4kwqe->sa0 = dev->mac_addr[0]; | |
1187 | l4kwqe->sa1 = dev->mac_addr[1]; | |
1188 | l4kwqe->sa2 = dev->mac_addr[2]; | |
1189 | l4kwqe->sa3 = dev->mac_addr[3]; | |
1190 | l4kwqe->sa4 = dev->mac_addr[4]; | |
1191 | l4kwqe->sa5 = dev->mac_addr[5]; | |
1192 | ||
1193 | l4kwqe->etype = ETH_P_IP; | |
1194 | l4kwqe->ipid_count = DEF_IPID_COUNT; | |
1195 | l4kwqe->host_opaque = csk->l5_cid; | |
1196 | ||
1197 | if (csk->vlan_id) { | |
1198 | l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING; | |
1199 | l4kwqe->vlan_tag = csk->vlan_id; | |
1200 | l4kwqe->l2hdr_nbytes += 4; | |
1201 | } | |
1202 | ||
1203 | return dev->submit_kwqes(dev, wqes, 1); | |
1204 | } | |
1205 | ||
1206 | static int cnic_cm_update_pg(struct cnic_sock *csk) | |
1207 | { | |
1208 | struct cnic_dev *dev = csk->dev; | |
1209 | struct l4_kwq_update_pg *l4kwqe; | |
1210 | struct kwqe *wqes[1]; | |
1211 | ||
1212 | l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1; | |
1213 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1214 | wqes[0] = (struct kwqe *) l4kwqe; | |
1215 | ||
1216 | l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG; | |
1217 | l4kwqe->flags = | |
1218 | L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT; | |
1219 | l4kwqe->pg_cid = csk->pg_cid; | |
1220 | ||
1221 | l4kwqe->da0 = csk->ha[0]; | |
1222 | l4kwqe->da1 = csk->ha[1]; | |
1223 | l4kwqe->da2 = csk->ha[2]; | |
1224 | l4kwqe->da3 = csk->ha[3]; | |
1225 | l4kwqe->da4 = csk->ha[4]; | |
1226 | l4kwqe->da5 = csk->ha[5]; | |
1227 | ||
1228 | l4kwqe->pg_host_opaque = csk->l5_cid; | |
1229 | l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA; | |
1230 | ||
1231 | return dev->submit_kwqes(dev, wqes, 1); | |
1232 | } | |
1233 | ||
1234 | static int cnic_cm_upload_pg(struct cnic_sock *csk) | |
1235 | { | |
1236 | struct cnic_dev *dev = csk->dev; | |
1237 | struct l4_kwq_upload *l4kwqe; | |
1238 | struct kwqe *wqes[1]; | |
1239 | ||
1240 | l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1; | |
1241 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1242 | wqes[0] = (struct kwqe *) l4kwqe; | |
1243 | ||
1244 | l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG; | |
1245 | l4kwqe->flags = | |
1246 | L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT; | |
1247 | l4kwqe->cid = csk->pg_cid; | |
1248 | ||
1249 | return dev->submit_kwqes(dev, wqes, 1); | |
1250 | } | |
1251 | ||
1252 | static int cnic_cm_conn_req(struct cnic_sock *csk) | |
1253 | { | |
1254 | struct cnic_dev *dev = csk->dev; | |
1255 | struct l4_kwq_connect_req1 *l4kwqe1; | |
1256 | struct l4_kwq_connect_req2 *l4kwqe2; | |
1257 | struct l4_kwq_connect_req3 *l4kwqe3; | |
1258 | struct kwqe *wqes[3]; | |
1259 | u8 tcp_flags = 0; | |
1260 | int num_wqes = 2; | |
1261 | ||
1262 | l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1; | |
1263 | l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2; | |
1264 | l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3; | |
1265 | memset(l4kwqe1, 0, sizeof(*l4kwqe1)); | |
1266 | memset(l4kwqe2, 0, sizeof(*l4kwqe2)); | |
1267 | memset(l4kwqe3, 0, sizeof(*l4kwqe3)); | |
1268 | ||
1269 | l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3; | |
1270 | l4kwqe3->flags = | |
1271 | L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT; | |
1272 | l4kwqe3->ka_timeout = csk->ka_timeout; | |
1273 | l4kwqe3->ka_interval = csk->ka_interval; | |
1274 | l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count; | |
1275 | l4kwqe3->tos = csk->tos; | |
1276 | l4kwqe3->ttl = csk->ttl; | |
1277 | l4kwqe3->snd_seq_scale = csk->snd_seq_scale; | |
1278 | l4kwqe3->pmtu = csk->mtu; | |
1279 | l4kwqe3->rcv_buf = csk->rcv_buf; | |
1280 | l4kwqe3->snd_buf = csk->snd_buf; | |
1281 | l4kwqe3->seed = csk->seed; | |
1282 | ||
1283 | wqes[0] = (struct kwqe *) l4kwqe1; | |
1284 | if (test_bit(SK_F_IPV6, &csk->flags)) { | |
1285 | wqes[1] = (struct kwqe *) l4kwqe2; | |
1286 | wqes[2] = (struct kwqe *) l4kwqe3; | |
1287 | num_wqes = 3; | |
1288 | ||
1289 | l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6; | |
1290 | l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2; | |
1291 | l4kwqe2->flags = | |
1292 | L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT | | |
1293 | L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT; | |
1294 | l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]); | |
1295 | l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]); | |
1296 | l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]); | |
1297 | l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]); | |
1298 | l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]); | |
1299 | l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]); | |
1300 | l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) - | |
1301 | sizeof(struct tcphdr); | |
1302 | } else { | |
1303 | wqes[1] = (struct kwqe *) l4kwqe3; | |
1304 | l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) - | |
1305 | sizeof(struct tcphdr); | |
1306 | } | |
1307 | ||
1308 | l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1; | |
1309 | l4kwqe1->flags = | |
1310 | (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) | | |
1311 | L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT; | |
1312 | l4kwqe1->cid = csk->cid; | |
1313 | l4kwqe1->pg_cid = csk->pg_cid; | |
1314 | l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]); | |
1315 | l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]); | |
1316 | l4kwqe1->src_port = be16_to_cpu(csk->src_port); | |
1317 | l4kwqe1->dst_port = be16_to_cpu(csk->dst_port); | |
1318 | if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK) | |
1319 | tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK; | |
1320 | if (csk->tcp_flags & SK_TCP_KEEP_ALIVE) | |
1321 | tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE; | |
1322 | if (csk->tcp_flags & SK_TCP_NAGLE) | |
1323 | tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE; | |
1324 | if (csk->tcp_flags & SK_TCP_TIMESTAMP) | |
1325 | tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP; | |
1326 | if (csk->tcp_flags & SK_TCP_SACK) | |
1327 | tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK; | |
1328 | if (csk->tcp_flags & SK_TCP_SEG_SCALING) | |
1329 | tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING; | |
1330 | ||
1331 | l4kwqe1->tcp_flags = tcp_flags; | |
1332 | ||
1333 | return dev->submit_kwqes(dev, wqes, num_wqes); | |
1334 | } | |
1335 | ||
1336 | static int cnic_cm_close_req(struct cnic_sock *csk) | |
1337 | { | |
1338 | struct cnic_dev *dev = csk->dev; | |
1339 | struct l4_kwq_close_req *l4kwqe; | |
1340 | struct kwqe *wqes[1]; | |
1341 | ||
1342 | l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2; | |
1343 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1344 | wqes[0] = (struct kwqe *) l4kwqe; | |
1345 | ||
1346 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE; | |
1347 | l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT; | |
1348 | l4kwqe->cid = csk->cid; | |
1349 | ||
1350 | return dev->submit_kwqes(dev, wqes, 1); | |
1351 | } | |
1352 | ||
1353 | static int cnic_cm_abort_req(struct cnic_sock *csk) | |
1354 | { | |
1355 | struct cnic_dev *dev = csk->dev; | |
1356 | struct l4_kwq_reset_req *l4kwqe; | |
1357 | struct kwqe *wqes[1]; | |
1358 | ||
1359 | l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2; | |
1360 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1361 | wqes[0] = (struct kwqe *) l4kwqe; | |
1362 | ||
1363 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET; | |
1364 | l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT; | |
1365 | l4kwqe->cid = csk->cid; | |
1366 | ||
1367 | return dev->submit_kwqes(dev, wqes, 1); | |
1368 | } | |
1369 | ||
1370 | static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid, | |
1371 | u32 l5_cid, struct cnic_sock **csk, void *context) | |
1372 | { | |
1373 | struct cnic_local *cp = dev->cnic_priv; | |
1374 | struct cnic_sock *csk1; | |
1375 | ||
1376 | if (l5_cid >= MAX_CM_SK_TBL_SZ) | |
1377 | return -EINVAL; | |
1378 | ||
1379 | csk1 = &cp->csk_tbl[l5_cid]; | |
1380 | if (atomic_read(&csk1->ref_count)) | |
1381 | return -EAGAIN; | |
1382 | ||
1383 | if (test_and_set_bit(SK_F_INUSE, &csk1->flags)) | |
1384 | return -EBUSY; | |
1385 | ||
1386 | csk1->dev = dev; | |
1387 | csk1->cid = cid; | |
1388 | csk1->l5_cid = l5_cid; | |
1389 | csk1->ulp_type = ulp_type; | |
1390 | csk1->context = context; | |
1391 | ||
1392 | csk1->ka_timeout = DEF_KA_TIMEOUT; | |
1393 | csk1->ka_interval = DEF_KA_INTERVAL; | |
1394 | csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT; | |
1395 | csk1->tos = DEF_TOS; | |
1396 | csk1->ttl = DEF_TTL; | |
1397 | csk1->snd_seq_scale = DEF_SND_SEQ_SCALE; | |
1398 | csk1->rcv_buf = DEF_RCV_BUF; | |
1399 | csk1->snd_buf = DEF_SND_BUF; | |
1400 | csk1->seed = DEF_SEED; | |
1401 | ||
1402 | *csk = csk1; | |
1403 | return 0; | |
1404 | } | |
1405 | ||
1406 | static void cnic_cm_cleanup(struct cnic_sock *csk) | |
1407 | { | |
1408 | if (csk->src_port) { | |
1409 | struct cnic_dev *dev = csk->dev; | |
1410 | struct cnic_local *cp = dev->cnic_priv; | |
1411 | ||
1412 | cnic_free_id(&cp->csk_port_tbl, csk->src_port); | |
1413 | csk->src_port = 0; | |
1414 | } | |
1415 | } | |
1416 | ||
1417 | static void cnic_close_conn(struct cnic_sock *csk) | |
1418 | { | |
1419 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) { | |
1420 | cnic_cm_upload_pg(csk); | |
1421 | clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); | |
1422 | } | |
1423 | cnic_cm_cleanup(csk); | |
1424 | } | |
1425 | ||
1426 | static int cnic_cm_destroy(struct cnic_sock *csk) | |
1427 | { | |
1428 | if (!cnic_in_use(csk)) | |
1429 | return -EINVAL; | |
1430 | ||
1431 | csk_hold(csk); | |
1432 | clear_bit(SK_F_INUSE, &csk->flags); | |
1433 | smp_mb__after_clear_bit(); | |
1434 | while (atomic_read(&csk->ref_count) != 1) | |
1435 | msleep(1); | |
1436 | cnic_cm_cleanup(csk); | |
1437 | ||
1438 | csk->flags = 0; | |
1439 | csk_put(csk); | |
1440 | return 0; | |
1441 | } | |
1442 | ||
1443 | static inline u16 cnic_get_vlan(struct net_device *dev, | |
1444 | struct net_device **vlan_dev) | |
1445 | { | |
1446 | if (dev->priv_flags & IFF_802_1Q_VLAN) { | |
1447 | *vlan_dev = vlan_dev_real_dev(dev); | |
1448 | return vlan_dev_vlan_id(dev); | |
1449 | } | |
1450 | *vlan_dev = dev; | |
1451 | return 0; | |
1452 | } | |
1453 | ||
1454 | static int cnic_get_v4_route(struct sockaddr_in *dst_addr, | |
1455 | struct dst_entry **dst) | |
1456 | { | |
faea56c9 | 1457 | #if defined(CONFIG_INET) |
a4636960 MC |
1458 | struct flowi fl; |
1459 | int err; | |
1460 | struct rtable *rt; | |
1461 | ||
1462 | memset(&fl, 0, sizeof(fl)); | |
1463 | fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr; | |
1464 | ||
1465 | err = ip_route_output_key(&init_net, &rt, &fl); | |
1466 | if (!err) | |
1467 | *dst = &rt->u.dst; | |
1468 | return err; | |
faea56c9 RD |
1469 | #else |
1470 | return -ENETUNREACH; | |
1471 | #endif | |
a4636960 MC |
1472 | } |
1473 | ||
1474 | static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr, | |
1475 | struct dst_entry **dst) | |
1476 | { | |
faea56c9 | 1477 | #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE)) |
a4636960 MC |
1478 | struct flowi fl; |
1479 | ||
1480 | memset(&fl, 0, sizeof(fl)); | |
1481 | ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr); | |
1482 | if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL) | |
1483 | fl.oif = dst_addr->sin6_scope_id; | |
1484 | ||
1485 | *dst = ip6_route_output(&init_net, NULL, &fl); | |
1486 | if (*dst) | |
1487 | return 0; | |
1488 | #endif | |
1489 | ||
1490 | return -ENETUNREACH; | |
1491 | } | |
1492 | ||
1493 | static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr, | |
1494 | int ulp_type) | |
1495 | { | |
1496 | struct cnic_dev *dev = NULL; | |
1497 | struct dst_entry *dst; | |
1498 | struct net_device *netdev = NULL; | |
1499 | int err = -ENETUNREACH; | |
1500 | ||
1501 | if (dst_addr->sin_family == AF_INET) | |
1502 | err = cnic_get_v4_route(dst_addr, &dst); | |
1503 | else if (dst_addr->sin_family == AF_INET6) { | |
1504 | struct sockaddr_in6 *dst_addr6 = | |
1505 | (struct sockaddr_in6 *) dst_addr; | |
1506 | ||
1507 | err = cnic_get_v6_route(dst_addr6, &dst); | |
1508 | } else | |
1509 | return NULL; | |
1510 | ||
1511 | if (err) | |
1512 | return NULL; | |
1513 | ||
1514 | if (!dst->dev) | |
1515 | goto done; | |
1516 | ||
1517 | cnic_get_vlan(dst->dev, &netdev); | |
1518 | ||
1519 | dev = cnic_from_netdev(netdev); | |
1520 | ||
1521 | done: | |
1522 | dst_release(dst); | |
1523 | if (dev) | |
1524 | cnic_put(dev); | |
1525 | return dev; | |
1526 | } | |
1527 | ||
1528 | static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr) | |
1529 | { | |
1530 | struct cnic_dev *dev = csk->dev; | |
1531 | struct cnic_local *cp = dev->cnic_priv; | |
1532 | ||
1533 | return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk); | |
1534 | } | |
1535 | ||
1536 | static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr) | |
1537 | { | |
1538 | struct cnic_dev *dev = csk->dev; | |
1539 | struct cnic_local *cp = dev->cnic_priv; | |
1540 | int is_v6, err, rc = -ENETUNREACH; | |
1541 | struct dst_entry *dst; | |
1542 | struct net_device *realdev; | |
1543 | u32 local_port; | |
1544 | ||
1545 | if (saddr->local.v6.sin6_family == AF_INET6 && | |
1546 | saddr->remote.v6.sin6_family == AF_INET6) | |
1547 | is_v6 = 1; | |
1548 | else if (saddr->local.v4.sin_family == AF_INET && | |
1549 | saddr->remote.v4.sin_family == AF_INET) | |
1550 | is_v6 = 0; | |
1551 | else | |
1552 | return -EINVAL; | |
1553 | ||
1554 | clear_bit(SK_F_IPV6, &csk->flags); | |
1555 | ||
1556 | if (is_v6) { | |
faea56c9 | 1557 | #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE)) |
a4636960 MC |
1558 | set_bit(SK_F_IPV6, &csk->flags); |
1559 | err = cnic_get_v6_route(&saddr->remote.v6, &dst); | |
1560 | if (err) | |
1561 | return err; | |
1562 | ||
1563 | if (!dst || dst->error || !dst->dev) | |
1564 | goto err_out; | |
1565 | ||
1566 | memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr, | |
1567 | sizeof(struct in6_addr)); | |
1568 | csk->dst_port = saddr->remote.v6.sin6_port; | |
1569 | local_port = saddr->local.v6.sin6_port; | |
1570 | #else | |
1571 | return rc; | |
1572 | #endif | |
1573 | ||
1574 | } else { | |
1575 | err = cnic_get_v4_route(&saddr->remote.v4, &dst); | |
1576 | if (err) | |
1577 | return err; | |
1578 | ||
1579 | if (!dst || dst->error || !dst->dev) | |
1580 | goto err_out; | |
1581 | ||
1582 | csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr; | |
1583 | csk->dst_port = saddr->remote.v4.sin_port; | |
1584 | local_port = saddr->local.v4.sin_port; | |
1585 | } | |
1586 | ||
1587 | csk->vlan_id = cnic_get_vlan(dst->dev, &realdev); | |
1588 | if (realdev != dev->netdev) | |
1589 | goto err_out; | |
1590 | ||
1591 | if (local_port >= CNIC_LOCAL_PORT_MIN && | |
1592 | local_port < CNIC_LOCAL_PORT_MAX) { | |
1593 | if (cnic_alloc_id(&cp->csk_port_tbl, local_port)) | |
1594 | local_port = 0; | |
1595 | } else | |
1596 | local_port = 0; | |
1597 | ||
1598 | if (!local_port) { | |
1599 | local_port = cnic_alloc_new_id(&cp->csk_port_tbl); | |
1600 | if (local_port == -1) { | |
1601 | rc = -ENOMEM; | |
1602 | goto err_out; | |
1603 | } | |
1604 | } | |
1605 | csk->src_port = local_port; | |
1606 | ||
1607 | csk->mtu = dst_mtu(dst); | |
1608 | rc = 0; | |
1609 | ||
1610 | err_out: | |
1611 | dst_release(dst); | |
1612 | return rc; | |
1613 | } | |
1614 | ||
1615 | static void cnic_init_csk_state(struct cnic_sock *csk) | |
1616 | { | |
1617 | csk->state = 0; | |
1618 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); | |
1619 | clear_bit(SK_F_CLOSING, &csk->flags); | |
1620 | } | |
1621 | ||
1622 | static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr) | |
1623 | { | |
1624 | int err = 0; | |
1625 | ||
1626 | if (!cnic_in_use(csk)) | |
1627 | return -EINVAL; | |
1628 | ||
1629 | if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags)) | |
1630 | return -EINVAL; | |
1631 | ||
1632 | cnic_init_csk_state(csk); | |
1633 | ||
1634 | err = cnic_get_route(csk, saddr); | |
1635 | if (err) | |
1636 | goto err_out; | |
1637 | ||
1638 | err = cnic_resolve_addr(csk, saddr); | |
1639 | if (!err) | |
1640 | return 0; | |
1641 | ||
1642 | err_out: | |
1643 | clear_bit(SK_F_CONNECT_START, &csk->flags); | |
1644 | return err; | |
1645 | } | |
1646 | ||
1647 | static int cnic_cm_abort(struct cnic_sock *csk) | |
1648 | { | |
1649 | struct cnic_local *cp = csk->dev->cnic_priv; | |
1650 | u32 opcode; | |
1651 | ||
1652 | if (!cnic_in_use(csk)) | |
1653 | return -EINVAL; | |
1654 | ||
1655 | if (cnic_abort_prep(csk)) | |
1656 | return cnic_cm_abort_req(csk); | |
1657 | ||
1658 | /* Getting here means that we haven't started connect, or | |
1659 | * connect was not successful. | |
1660 | */ | |
1661 | ||
1662 | csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; | |
1663 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) | |
1664 | opcode = csk->state; | |
1665 | else | |
1666 | opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD; | |
1667 | cp->close_conn(csk, opcode); | |
1668 | ||
1669 | return 0; | |
1670 | } | |
1671 | ||
1672 | static int cnic_cm_close(struct cnic_sock *csk) | |
1673 | { | |
1674 | if (!cnic_in_use(csk)) | |
1675 | return -EINVAL; | |
1676 | ||
1677 | if (cnic_close_prep(csk)) { | |
1678 | csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP; | |
1679 | return cnic_cm_close_req(csk); | |
1680 | } | |
1681 | return 0; | |
1682 | } | |
1683 | ||
1684 | static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk, | |
1685 | u8 opcode) | |
1686 | { | |
1687 | struct cnic_ulp_ops *ulp_ops; | |
1688 | int ulp_type = csk->ulp_type; | |
1689 | ||
1690 | rcu_read_lock(); | |
1691 | ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); | |
1692 | if (ulp_ops) { | |
1693 | if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE) | |
1694 | ulp_ops->cm_connect_complete(csk); | |
1695 | else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) | |
1696 | ulp_ops->cm_close_complete(csk); | |
1697 | else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) | |
1698 | ulp_ops->cm_remote_abort(csk); | |
1699 | else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP) | |
1700 | ulp_ops->cm_abort_complete(csk); | |
1701 | else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED) | |
1702 | ulp_ops->cm_remote_close(csk); | |
1703 | } | |
1704 | rcu_read_unlock(); | |
1705 | } | |
1706 | ||
1707 | static int cnic_cm_set_pg(struct cnic_sock *csk) | |
1708 | { | |
1709 | if (cnic_offld_prep(csk)) { | |
1710 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) | |
1711 | cnic_cm_update_pg(csk); | |
1712 | else | |
1713 | cnic_cm_offload_pg(csk); | |
1714 | } | |
1715 | return 0; | |
1716 | } | |
1717 | ||
1718 | static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe) | |
1719 | { | |
1720 | struct cnic_local *cp = dev->cnic_priv; | |
1721 | u32 l5_cid = kcqe->pg_host_opaque; | |
1722 | u8 opcode = kcqe->op_code; | |
1723 | struct cnic_sock *csk = &cp->csk_tbl[l5_cid]; | |
1724 | ||
1725 | csk_hold(csk); | |
1726 | if (!cnic_in_use(csk)) | |
1727 | goto done; | |
1728 | ||
1729 | if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { | |
1730 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); | |
1731 | goto done; | |
1732 | } | |
1733 | csk->pg_cid = kcqe->pg_cid; | |
1734 | set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); | |
1735 | cnic_cm_conn_req(csk); | |
1736 | ||
1737 | done: | |
1738 | csk_put(csk); | |
1739 | } | |
1740 | ||
1741 | static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe) | |
1742 | { | |
1743 | struct cnic_local *cp = dev->cnic_priv; | |
1744 | struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe; | |
1745 | u8 opcode = l4kcqe->op_code; | |
1746 | u32 l5_cid; | |
1747 | struct cnic_sock *csk; | |
1748 | ||
1749 | if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG || | |
1750 | opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { | |
1751 | cnic_cm_process_offld_pg(dev, l4kcqe); | |
1752 | return; | |
1753 | } | |
1754 | ||
1755 | l5_cid = l4kcqe->conn_id; | |
1756 | if (opcode & 0x80) | |
1757 | l5_cid = l4kcqe->cid; | |
1758 | if (l5_cid >= MAX_CM_SK_TBL_SZ) | |
1759 | return; | |
1760 | ||
1761 | csk = &cp->csk_tbl[l5_cid]; | |
1762 | csk_hold(csk); | |
1763 | ||
1764 | if (!cnic_in_use(csk)) { | |
1765 | csk_put(csk); | |
1766 | return; | |
1767 | } | |
1768 | ||
1769 | switch (opcode) { | |
1770 | case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE: | |
1771 | if (l4kcqe->status == 0) | |
1772 | set_bit(SK_F_OFFLD_COMPLETE, &csk->flags); | |
1773 | ||
1774 | smp_mb__before_clear_bit(); | |
1775 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); | |
1776 | cnic_cm_upcall(cp, csk, opcode); | |
1777 | break; | |
1778 | ||
1779 | case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED: | |
1780 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) | |
1781 | csk->state = opcode; | |
1782 | /* fall through */ | |
1783 | case L4_KCQE_OPCODE_VALUE_CLOSE_COMP: | |
1784 | case L4_KCQE_OPCODE_VALUE_RESET_COMP: | |
1785 | cp->close_conn(csk, opcode); | |
1786 | break; | |
1787 | ||
1788 | case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED: | |
1789 | cnic_cm_upcall(cp, csk, opcode); | |
1790 | break; | |
1791 | } | |
1792 | csk_put(csk); | |
1793 | } | |
1794 | ||
1795 | static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num) | |
1796 | { | |
1797 | struct cnic_dev *dev = data; | |
1798 | int i; | |
1799 | ||
1800 | for (i = 0; i < num; i++) | |
1801 | cnic_cm_process_kcqe(dev, kcqe[i]); | |
1802 | } | |
1803 | ||
1804 | static struct cnic_ulp_ops cm_ulp_ops = { | |
1805 | .indicate_kcqes = cnic_cm_indicate_kcqe, | |
1806 | }; | |
1807 | ||
1808 | static void cnic_cm_free_mem(struct cnic_dev *dev) | |
1809 | { | |
1810 | struct cnic_local *cp = dev->cnic_priv; | |
1811 | ||
1812 | kfree(cp->csk_tbl); | |
1813 | cp->csk_tbl = NULL; | |
1814 | cnic_free_id_tbl(&cp->csk_port_tbl); | |
1815 | } | |
1816 | ||
1817 | static int cnic_cm_alloc_mem(struct cnic_dev *dev) | |
1818 | { | |
1819 | struct cnic_local *cp = dev->cnic_priv; | |
1820 | ||
1821 | cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ, | |
1822 | GFP_KERNEL); | |
1823 | if (!cp->csk_tbl) | |
1824 | return -ENOMEM; | |
1825 | ||
1826 | if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE, | |
1827 | CNIC_LOCAL_PORT_MIN)) { | |
1828 | cnic_cm_free_mem(dev); | |
1829 | return -ENOMEM; | |
1830 | } | |
1831 | return 0; | |
1832 | } | |
1833 | ||
1834 | static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode) | |
1835 | { | |
1836 | if ((opcode == csk->state) || | |
1837 | (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED && | |
1838 | csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) { | |
1839 | if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) | |
1840 | return 1; | |
1841 | } | |
1842 | return 0; | |
1843 | } | |
1844 | ||
1845 | static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode) | |
1846 | { | |
1847 | struct cnic_dev *dev = csk->dev; | |
1848 | struct cnic_local *cp = dev->cnic_priv; | |
1849 | ||
1850 | clear_bit(SK_F_CONNECT_START, &csk->flags); | |
1851 | if (cnic_ready_to_close(csk, opcode)) { | |
1852 | cnic_close_conn(csk); | |
1853 | cnic_cm_upcall(cp, csk, opcode); | |
1854 | } | |
1855 | } | |
1856 | ||
1857 | static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev) | |
1858 | { | |
1859 | } | |
1860 | ||
1861 | static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev) | |
1862 | { | |
1863 | u32 seed; | |
1864 | ||
1865 | get_random_bytes(&seed, 4); | |
1866 | cnic_ctx_wr(dev, 45, 0, seed); | |
1867 | return 0; | |
1868 | } | |
1869 | ||
1870 | static int cnic_cm_open(struct cnic_dev *dev) | |
1871 | { | |
1872 | struct cnic_local *cp = dev->cnic_priv; | |
1873 | int err; | |
1874 | ||
1875 | err = cnic_cm_alloc_mem(dev); | |
1876 | if (err) | |
1877 | return err; | |
1878 | ||
1879 | err = cp->start_cm(dev); | |
1880 | ||
1881 | if (err) | |
1882 | goto err_out; | |
1883 | ||
1884 | dev->cm_create = cnic_cm_create; | |
1885 | dev->cm_destroy = cnic_cm_destroy; | |
1886 | dev->cm_connect = cnic_cm_connect; | |
1887 | dev->cm_abort = cnic_cm_abort; | |
1888 | dev->cm_close = cnic_cm_close; | |
1889 | dev->cm_select_dev = cnic_cm_select_dev; | |
1890 | ||
1891 | cp->ulp_handle[CNIC_ULP_L4] = dev; | |
1892 | rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops); | |
1893 | return 0; | |
1894 | ||
1895 | err_out: | |
1896 | cnic_cm_free_mem(dev); | |
1897 | return err; | |
1898 | } | |
1899 | ||
1900 | static int cnic_cm_shutdown(struct cnic_dev *dev) | |
1901 | { | |
1902 | struct cnic_local *cp = dev->cnic_priv; | |
1903 | int i; | |
1904 | ||
1905 | cp->stop_cm(dev); | |
1906 | ||
1907 | if (!cp->csk_tbl) | |
1908 | return 0; | |
1909 | ||
1910 | for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) { | |
1911 | struct cnic_sock *csk = &cp->csk_tbl[i]; | |
1912 | ||
1913 | clear_bit(SK_F_INUSE, &csk->flags); | |
1914 | cnic_cm_cleanup(csk); | |
1915 | } | |
1916 | cnic_cm_free_mem(dev); | |
1917 | ||
1918 | return 0; | |
1919 | } | |
1920 | ||
1921 | static void cnic_init_context(struct cnic_dev *dev, u32 cid) | |
1922 | { | |
1923 | struct cnic_local *cp = dev->cnic_priv; | |
1924 | u32 cid_addr; | |
1925 | int i; | |
1926 | ||
1927 | if (CHIP_NUM(cp) == CHIP_NUM_5709) | |
1928 | return; | |
1929 | ||
1930 | cid_addr = GET_CID_ADDR(cid); | |
1931 | ||
1932 | for (i = 0; i < CTX_SIZE; i += 4) | |
1933 | cnic_ctx_wr(dev, cid_addr, i, 0); | |
1934 | } | |
1935 | ||
1936 | static int cnic_setup_5709_context(struct cnic_dev *dev, int valid) | |
1937 | { | |
1938 | struct cnic_local *cp = dev->cnic_priv; | |
1939 | int ret = 0, i; | |
1940 | u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0; | |
1941 | ||
1942 | if (CHIP_NUM(cp) != CHIP_NUM_5709) | |
1943 | return 0; | |
1944 | ||
1945 | for (i = 0; i < cp->ctx_blks; i++) { | |
1946 | int j; | |
1947 | u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk; | |
1948 | u32 val; | |
1949 | ||
1950 | memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE); | |
1951 | ||
1952 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0, | |
1953 | (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit); | |
1954 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1, | |
1955 | (u64) cp->ctx_arr[i].mapping >> 32); | |
1956 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx | | |
1957 | BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ); | |
1958 | for (j = 0; j < 10; j++) { | |
1959 | ||
1960 | val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL); | |
1961 | if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ)) | |
1962 | break; | |
1963 | udelay(5); | |
1964 | } | |
1965 | if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) { | |
1966 | ret = -EBUSY; | |
1967 | break; | |
1968 | } | |
1969 | } | |
1970 | return ret; | |
1971 | } | |
1972 | ||
1973 | static void cnic_free_irq(struct cnic_dev *dev) | |
1974 | { | |
1975 | struct cnic_local *cp = dev->cnic_priv; | |
1976 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
1977 | ||
1978 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
1979 | cp->disable_int_sync(dev); | |
1980 | tasklet_disable(&cp->cnic_irq_task); | |
1981 | free_irq(ethdev->irq_arr[0].vector, dev); | |
1982 | } | |
1983 | } | |
1984 | ||
1985 | static int cnic_init_bnx2_irq(struct cnic_dev *dev) | |
1986 | { | |
1987 | struct cnic_local *cp = dev->cnic_priv; | |
1988 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
1989 | ||
1990 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
1991 | int err, i = 0; | |
1992 | int sblk_num = cp->status_blk_num; | |
1993 | u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) + | |
1994 | BNX2_HC_SB_CONFIG_1; | |
1995 | ||
1996 | CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT); | |
1997 | ||
1998 | CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8); | |
1999 | CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220); | |
2000 | CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220); | |
2001 | ||
2002 | cp->bnx2_status_blk = cp->status_blk; | |
2003 | cp->last_status_idx = cp->bnx2_status_blk->status_idx; | |
2004 | tasklet_init(&cp->cnic_irq_task, &cnic_service_bnx2_msix, | |
2005 | (unsigned long) dev); | |
2006 | err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, | |
2007 | "cnic", dev); | |
2008 | if (err) { | |
2009 | tasklet_disable(&cp->cnic_irq_task); | |
2010 | return err; | |
2011 | } | |
2012 | while (cp->bnx2_status_blk->status_completion_producer_index && | |
2013 | i < 10) { | |
2014 | CNIC_WR(dev, BNX2_HC_COALESCE_NOW, | |
2015 | 1 << (11 + sblk_num)); | |
2016 | udelay(10); | |
2017 | i++; | |
2018 | barrier(); | |
2019 | } | |
2020 | if (cp->bnx2_status_blk->status_completion_producer_index) { | |
2021 | cnic_free_irq(dev); | |
2022 | goto failed; | |
2023 | } | |
2024 | ||
2025 | } else { | |
2026 | struct status_block *sblk = cp->status_blk; | |
2027 | u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND); | |
2028 | int i = 0; | |
2029 | ||
2030 | while (sblk->status_completion_producer_index && i < 10) { | |
2031 | CNIC_WR(dev, BNX2_HC_COMMAND, | |
2032 | hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT); | |
2033 | udelay(10); | |
2034 | i++; | |
2035 | barrier(); | |
2036 | } | |
2037 | if (sblk->status_completion_producer_index) | |
2038 | goto failed; | |
2039 | ||
2040 | } | |
2041 | return 0; | |
2042 | ||
2043 | failed: | |
2044 | printk(KERN_ERR PFX "%s: " "KCQ index not resetting to 0.\n", | |
2045 | dev->netdev->name); | |
2046 | return -EBUSY; | |
2047 | } | |
2048 | ||
2049 | static void cnic_enable_bnx2_int(struct cnic_dev *dev) | |
2050 | { | |
2051 | struct cnic_local *cp = dev->cnic_priv; | |
2052 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2053 | ||
2054 | if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) | |
2055 | return; | |
2056 | ||
2057 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | | |
2058 | BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); | |
2059 | } | |
2060 | ||
2061 | static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev) | |
2062 | { | |
2063 | struct cnic_local *cp = dev->cnic_priv; | |
2064 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2065 | ||
2066 | if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) | |
2067 | return; | |
2068 | ||
2069 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | | |
2070 | BNX2_PCICFG_INT_ACK_CMD_MASK_INT); | |
2071 | CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD); | |
2072 | synchronize_irq(ethdev->irq_arr[0].vector); | |
2073 | } | |
2074 | ||
2075 | static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev) | |
2076 | { | |
2077 | struct cnic_local *cp = dev->cnic_priv; | |
2078 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2079 | u32 cid_addr, tx_cid, sb_id; | |
2080 | u32 val, offset0, offset1, offset2, offset3; | |
2081 | int i; | |
2082 | struct tx_bd *txbd; | |
2083 | dma_addr_t buf_map; | |
2084 | struct status_block *s_blk = cp->status_blk; | |
2085 | ||
2086 | sb_id = cp->status_blk_num; | |
2087 | tx_cid = 20; | |
2088 | cnic_init_context(dev, tx_cid); | |
2089 | cnic_init_context(dev, tx_cid + 1); | |
2090 | cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2; | |
2091 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2092 | struct status_block_msix *sblk = cp->status_blk; | |
2093 | ||
2094 | tx_cid = TX_TSS_CID + sb_id - 1; | |
2095 | cnic_init_context(dev, tx_cid); | |
2096 | CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) | | |
2097 | (TX_TSS_CID << 7)); | |
2098 | cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index; | |
2099 | } | |
2100 | cp->tx_cons = *cp->tx_cons_ptr; | |
2101 | ||
2102 | cid_addr = GET_CID_ADDR(tx_cid); | |
2103 | if (CHIP_NUM(cp) == CHIP_NUM_5709) { | |
2104 | u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40; | |
2105 | ||
2106 | for (i = 0; i < PHY_CTX_SIZE; i += 4) | |
2107 | cnic_ctx_wr(dev, cid_addr2, i, 0); | |
2108 | ||
2109 | offset0 = BNX2_L2CTX_TYPE_XI; | |
2110 | offset1 = BNX2_L2CTX_CMD_TYPE_XI; | |
2111 | offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI; | |
2112 | offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI; | |
2113 | } else { | |
2114 | offset0 = BNX2_L2CTX_TYPE; | |
2115 | offset1 = BNX2_L2CTX_CMD_TYPE; | |
2116 | offset2 = BNX2_L2CTX_TBDR_BHADDR_HI; | |
2117 | offset3 = BNX2_L2CTX_TBDR_BHADDR_LO; | |
2118 | } | |
2119 | val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2; | |
2120 | cnic_ctx_wr(dev, cid_addr, offset0, val); | |
2121 | ||
2122 | val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16); | |
2123 | cnic_ctx_wr(dev, cid_addr, offset1, val); | |
2124 | ||
2125 | txbd = (struct tx_bd *) cp->l2_ring; | |
2126 | ||
2127 | buf_map = cp->l2_buf_map; | |
2128 | for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) { | |
2129 | txbd->tx_bd_haddr_hi = (u64) buf_map >> 32; | |
2130 | txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff; | |
2131 | } | |
2132 | val = (u64) cp->l2_ring_map >> 32; | |
2133 | cnic_ctx_wr(dev, cid_addr, offset2, val); | |
2134 | txbd->tx_bd_haddr_hi = val; | |
2135 | ||
2136 | val = (u64) cp->l2_ring_map & 0xffffffff; | |
2137 | cnic_ctx_wr(dev, cid_addr, offset3, val); | |
2138 | txbd->tx_bd_haddr_lo = val; | |
2139 | } | |
2140 | ||
2141 | static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev) | |
2142 | { | |
2143 | struct cnic_local *cp = dev->cnic_priv; | |
2144 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2145 | u32 cid_addr, sb_id, val, coal_reg, coal_val; | |
2146 | int i; | |
2147 | struct rx_bd *rxbd; | |
2148 | struct status_block *s_blk = cp->status_blk; | |
2149 | ||
2150 | sb_id = cp->status_blk_num; | |
2151 | cnic_init_context(dev, 2); | |
2152 | cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2; | |
2153 | coal_reg = BNX2_HC_COMMAND; | |
2154 | coal_val = CNIC_RD(dev, coal_reg); | |
2155 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2156 | struct status_block_msix *sblk = cp->status_blk; | |
2157 | ||
2158 | cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index; | |
2159 | coal_reg = BNX2_HC_COALESCE_NOW; | |
2160 | coal_val = 1 << (11 + sb_id); | |
2161 | } | |
2162 | i = 0; | |
2163 | while (!(*cp->rx_cons_ptr != 0) && i < 10) { | |
2164 | CNIC_WR(dev, coal_reg, coal_val); | |
2165 | udelay(10); | |
2166 | i++; | |
2167 | barrier(); | |
2168 | } | |
2169 | cp->rx_cons = *cp->rx_cons_ptr; | |
2170 | ||
2171 | cid_addr = GET_CID_ADDR(2); | |
2172 | val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE | | |
2173 | BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8); | |
2174 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val); | |
2175 | ||
2176 | if (sb_id == 0) | |
2177 | val = 2 << BNX2_L2CTX_STATUSB_NUM_SHIFT; | |
2178 | else | |
2179 | val = BNX2_L2CTX_STATUSB_NUM(sb_id); | |
2180 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val); | |
2181 | ||
2182 | rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE); | |
2183 | for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) { | |
2184 | dma_addr_t buf_map; | |
2185 | int n = (i % cp->l2_rx_ring_size) + 1; | |
2186 | ||
2187 | buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size); | |
2188 | rxbd->rx_bd_len = cp->l2_single_buf_size; | |
2189 | rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END; | |
2190 | rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32; | |
2191 | rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff; | |
2192 | } | |
2193 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32; | |
2194 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val); | |
2195 | rxbd->rx_bd_haddr_hi = val; | |
2196 | ||
2197 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff; | |
2198 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val); | |
2199 | rxbd->rx_bd_haddr_lo = val; | |
2200 | ||
2201 | val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD); | |
2202 | cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2)); | |
2203 | } | |
2204 | ||
2205 | static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev) | |
2206 | { | |
2207 | struct kwqe *wqes[1], l2kwqe; | |
2208 | ||
2209 | memset(&l2kwqe, 0, sizeof(l2kwqe)); | |
2210 | wqes[0] = &l2kwqe; | |
2211 | l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) | | |
2212 | (L2_KWQE_OPCODE_VALUE_FLUSH << | |
2213 | KWQE_OPCODE_SHIFT) | 2; | |
2214 | dev->submit_kwqes(dev, wqes, 1); | |
2215 | } | |
2216 | ||
2217 | static void cnic_set_bnx2_mac(struct cnic_dev *dev) | |
2218 | { | |
2219 | struct cnic_local *cp = dev->cnic_priv; | |
2220 | u32 val; | |
2221 | ||
2222 | val = cp->func << 2; | |
2223 | ||
2224 | cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val); | |
2225 | ||
2226 | val = cnic_reg_rd_ind(dev, cp->shmem_base + | |
2227 | BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER); | |
2228 | dev->mac_addr[0] = (u8) (val >> 8); | |
2229 | dev->mac_addr[1] = (u8) val; | |
2230 | ||
2231 | CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val); | |
2232 | ||
2233 | val = cnic_reg_rd_ind(dev, cp->shmem_base + | |
2234 | BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER); | |
2235 | dev->mac_addr[2] = (u8) (val >> 24); | |
2236 | dev->mac_addr[3] = (u8) (val >> 16); | |
2237 | dev->mac_addr[4] = (u8) (val >> 8); | |
2238 | dev->mac_addr[5] = (u8) val; | |
2239 | ||
2240 | CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val); | |
2241 | ||
2242 | val = 4 | BNX2_RPM_SORT_USER2_BC_EN; | |
2243 | if (CHIP_NUM(cp) != CHIP_NUM_5709) | |
2244 | val |= BNX2_RPM_SORT_USER2_PROM_VLAN; | |
2245 | ||
2246 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0); | |
2247 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, val); | |
2248 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA); | |
2249 | } | |
2250 | ||
2251 | static int cnic_start_bnx2_hw(struct cnic_dev *dev) | |
2252 | { | |
2253 | struct cnic_local *cp = dev->cnic_priv; | |
2254 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2255 | struct status_block *sblk = cp->status_blk; | |
2256 | u32 val; | |
2257 | int err; | |
2258 | ||
2259 | cnic_set_bnx2_mac(dev); | |
2260 | ||
2261 | val = CNIC_RD(dev, BNX2_MQ_CONFIG); | |
2262 | val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE; | |
2263 | if (BCM_PAGE_BITS > 12) | |
2264 | val |= (12 - 8) << 4; | |
2265 | else | |
2266 | val |= (BCM_PAGE_BITS - 8) << 4; | |
2267 | ||
2268 | CNIC_WR(dev, BNX2_MQ_CONFIG, val); | |
2269 | ||
2270 | CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8); | |
2271 | CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220); | |
2272 | CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220); | |
2273 | ||
2274 | err = cnic_setup_5709_context(dev, 1); | |
2275 | if (err) | |
2276 | return err; | |
2277 | ||
2278 | cnic_init_context(dev, KWQ_CID); | |
2279 | cnic_init_context(dev, KCQ_CID); | |
2280 | ||
2281 | cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID); | |
2282 | cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX; | |
2283 | ||
2284 | cp->max_kwq_idx = MAX_KWQ_IDX; | |
2285 | cp->kwq_prod_idx = 0; | |
2286 | cp->kwq_con_idx = 0; | |
2287 | cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT; | |
2288 | ||
2289 | if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708) | |
2290 | cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15; | |
2291 | else | |
2292 | cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index; | |
2293 | ||
2294 | /* Initialize the kernel work queue context. */ | |
2295 | val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | | |
2296 | (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; | |
2297 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val); | |
2298 | ||
2299 | val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16; | |
2300 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); | |
2301 | ||
2302 | val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT; | |
2303 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); | |
2304 | ||
2305 | val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32); | |
2306 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); | |
2307 | ||
2308 | val = (u32) cp->kwq_info.pgtbl_map; | |
2309 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); | |
2310 | ||
2311 | cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID); | |
2312 | cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX; | |
2313 | ||
2314 | cp->kcq_prod_idx = 0; | |
2315 | ||
2316 | /* Initialize the kernel complete queue context. */ | |
2317 | val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | | |
2318 | (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; | |
2319 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val); | |
2320 | ||
2321 | val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16; | |
2322 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); | |
2323 | ||
2324 | val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT; | |
2325 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); | |
2326 | ||
2327 | val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32); | |
2328 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); | |
2329 | ||
2330 | val = (u32) cp->kcq_info.pgtbl_map; | |
2331 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); | |
2332 | ||
2333 | cp->int_num = 0; | |
2334 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2335 | u32 sb_id = cp->status_blk_num; | |
2336 | u32 sb = BNX2_L2CTX_STATUSB_NUM(sb_id); | |
2337 | ||
2338 | cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT; | |
2339 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); | |
2340 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); | |
2341 | } | |
2342 | ||
2343 | /* Enable Commnad Scheduler notification when we write to the | |
2344 | * host producer index of the kernel contexts. */ | |
2345 | CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2); | |
2346 | ||
2347 | /* Enable Command Scheduler notification when we write to either | |
2348 | * the Send Queue or Receive Queue producer indexes of the kernel | |
2349 | * bypass contexts. */ | |
2350 | CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7); | |
2351 | CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7); | |
2352 | ||
2353 | /* Notify COM when the driver post an application buffer. */ | |
2354 | CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000); | |
2355 | ||
2356 | /* Set the CP and COM doorbells. These two processors polls the | |
2357 | * doorbell for a non zero value before running. This must be done | |
2358 | * after setting up the kernel queue contexts. */ | |
2359 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1); | |
2360 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1); | |
2361 | ||
2362 | cnic_init_bnx2_tx_ring(dev); | |
2363 | cnic_init_bnx2_rx_ring(dev); | |
2364 | ||
2365 | err = cnic_init_bnx2_irq(dev); | |
2366 | if (err) { | |
2367 | printk(KERN_ERR PFX "%s: cnic_init_irq failed\n", | |
2368 | dev->netdev->name); | |
2369 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); | |
2370 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); | |
2371 | return err; | |
2372 | } | |
2373 | ||
2374 | return 0; | |
2375 | } | |
2376 | ||
2377 | static int cnic_start_hw(struct cnic_dev *dev) | |
2378 | { | |
2379 | struct cnic_local *cp = dev->cnic_priv; | |
2380 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2381 | int err; | |
2382 | ||
2383 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) | |
2384 | return -EALREADY; | |
2385 | ||
2386 | err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev); | |
2387 | if (err) { | |
2388 | printk(KERN_ERR PFX "%s: register_cnic failed\n", | |
2389 | dev->netdev->name); | |
2390 | goto err2; | |
2391 | } | |
2392 | ||
2393 | dev->regview = ethdev->io_base; | |
2394 | cp->chip_id = ethdev->chip_id; | |
2395 | pci_dev_get(dev->pcidev); | |
2396 | cp->func = PCI_FUNC(dev->pcidev->devfn); | |
2397 | cp->status_blk = ethdev->irq_arr[0].status_blk; | |
2398 | cp->status_blk_num = ethdev->irq_arr[0].status_blk_num; | |
2399 | ||
2400 | err = cp->alloc_resc(dev); | |
2401 | if (err) { | |
2402 | printk(KERN_ERR PFX "%s: allocate resource failure\n", | |
2403 | dev->netdev->name); | |
2404 | goto err1; | |
2405 | } | |
2406 | ||
2407 | err = cp->start_hw(dev); | |
2408 | if (err) | |
2409 | goto err1; | |
2410 | ||
2411 | err = cnic_cm_open(dev); | |
2412 | if (err) | |
2413 | goto err1; | |
2414 | ||
2415 | set_bit(CNIC_F_CNIC_UP, &dev->flags); | |
2416 | ||
2417 | cp->enable_int(dev); | |
2418 | ||
2419 | return 0; | |
2420 | ||
2421 | err1: | |
2422 | ethdev->drv_unregister_cnic(dev->netdev); | |
2423 | cp->free_resc(dev); | |
2424 | pci_dev_put(dev->pcidev); | |
2425 | err2: | |
2426 | return err; | |
2427 | } | |
2428 | ||
2429 | static void cnic_stop_bnx2_hw(struct cnic_dev *dev) | |
2430 | { | |
2431 | struct cnic_local *cp = dev->cnic_priv; | |
2432 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2433 | ||
2434 | cnic_disable_bnx2_int_sync(dev); | |
2435 | ||
2436 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); | |
2437 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); | |
2438 | ||
2439 | cnic_init_context(dev, KWQ_CID); | |
2440 | cnic_init_context(dev, KCQ_CID); | |
2441 | ||
2442 | cnic_setup_5709_context(dev, 0); | |
2443 | cnic_free_irq(dev); | |
2444 | ||
2445 | ethdev->drv_unregister_cnic(dev->netdev); | |
2446 | ||
2447 | cnic_free_resc(dev); | |
2448 | } | |
2449 | ||
2450 | static void cnic_stop_hw(struct cnic_dev *dev) | |
2451 | { | |
2452 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { | |
2453 | struct cnic_local *cp = dev->cnic_priv; | |
2454 | ||
2455 | clear_bit(CNIC_F_CNIC_UP, &dev->flags); | |
2456 | rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL); | |
2457 | synchronize_rcu(); | |
2458 | cnic_cm_shutdown(dev); | |
2459 | cp->stop_hw(dev); | |
2460 | pci_dev_put(dev->pcidev); | |
2461 | } | |
2462 | } | |
2463 | ||
2464 | static void cnic_free_dev(struct cnic_dev *dev) | |
2465 | { | |
2466 | int i = 0; | |
2467 | ||
2468 | while ((atomic_read(&dev->ref_count) != 0) && i < 10) { | |
2469 | msleep(100); | |
2470 | i++; | |
2471 | } | |
2472 | if (atomic_read(&dev->ref_count) != 0) | |
2473 | printk(KERN_ERR PFX "%s: Failed waiting for ref count to go" | |
2474 | " to zero.\n", dev->netdev->name); | |
2475 | ||
2476 | printk(KERN_INFO PFX "Removed CNIC device: %s\n", dev->netdev->name); | |
2477 | dev_put(dev->netdev); | |
2478 | kfree(dev); | |
2479 | } | |
2480 | ||
2481 | static struct cnic_dev *cnic_alloc_dev(struct net_device *dev, | |
2482 | struct pci_dev *pdev) | |
2483 | { | |
2484 | struct cnic_dev *cdev; | |
2485 | struct cnic_local *cp; | |
2486 | int alloc_size; | |
2487 | ||
2488 | alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local); | |
2489 | ||
2490 | cdev = kzalloc(alloc_size , GFP_KERNEL); | |
2491 | if (cdev == NULL) { | |
2492 | printk(KERN_ERR PFX "%s: allocate dev struct failure\n", | |
2493 | dev->name); | |
2494 | return NULL; | |
2495 | } | |
2496 | ||
2497 | cdev->netdev = dev; | |
2498 | cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev); | |
2499 | cdev->register_device = cnic_register_device; | |
2500 | cdev->unregister_device = cnic_unregister_device; | |
2501 | cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv; | |
2502 | ||
2503 | cp = cdev->cnic_priv; | |
2504 | cp->dev = cdev; | |
2505 | cp->uio_dev = -1; | |
2506 | cp->l2_single_buf_size = 0x400; | |
2507 | cp->l2_rx_ring_size = 3; | |
2508 | ||
2509 | spin_lock_init(&cp->cnic_ulp_lock); | |
2510 | ||
2511 | printk(KERN_INFO PFX "Added CNIC device: %s\n", dev->name); | |
2512 | ||
2513 | return cdev; | |
2514 | } | |
2515 | ||
2516 | static struct cnic_dev *init_bnx2_cnic(struct net_device *dev) | |
2517 | { | |
2518 | struct pci_dev *pdev; | |
2519 | struct cnic_dev *cdev; | |
2520 | struct cnic_local *cp; | |
2521 | struct cnic_eth_dev *ethdev = NULL; | |
e2ee3616 | 2522 | struct cnic_eth_dev *(*probe)(struct net_device *) = NULL; |
a4636960 | 2523 | |
e2ee3616 | 2524 | probe = symbol_get(bnx2_cnic_probe); |
a4636960 MC |
2525 | if (probe) { |
2526 | ethdev = (*probe)(dev); | |
2527 | symbol_put_addr(probe); | |
2528 | } | |
2529 | if (!ethdev) | |
2530 | return NULL; | |
2531 | ||
2532 | pdev = ethdev->pdev; | |
2533 | if (!pdev) | |
2534 | return NULL; | |
2535 | ||
2536 | dev_hold(dev); | |
2537 | pci_dev_get(pdev); | |
2538 | if (pdev->device == PCI_DEVICE_ID_NX2_5709 || | |
2539 | pdev->device == PCI_DEVICE_ID_NX2_5709S) { | |
2540 | u8 rev; | |
2541 | ||
2542 | pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); | |
2543 | if (rev < 0x10) { | |
2544 | pci_dev_put(pdev); | |
2545 | goto cnic_err; | |
2546 | } | |
2547 | } | |
2548 | pci_dev_put(pdev); | |
2549 | ||
2550 | cdev = cnic_alloc_dev(dev, pdev); | |
2551 | if (cdev == NULL) | |
2552 | goto cnic_err; | |
2553 | ||
2554 | set_bit(CNIC_F_BNX2_CLASS, &cdev->flags); | |
2555 | cdev->submit_kwqes = cnic_submit_bnx2_kwqes; | |
2556 | ||
2557 | cp = cdev->cnic_priv; | |
2558 | cp->ethdev = ethdev; | |
2559 | cdev->pcidev = pdev; | |
2560 | ||
2561 | cp->cnic_ops = &cnic_bnx2_ops; | |
2562 | cp->start_hw = cnic_start_bnx2_hw; | |
2563 | cp->stop_hw = cnic_stop_bnx2_hw; | |
2564 | cp->setup_pgtbl = cnic_setup_page_tbl; | |
2565 | cp->alloc_resc = cnic_alloc_bnx2_resc; | |
2566 | cp->free_resc = cnic_free_resc; | |
2567 | cp->start_cm = cnic_cm_init_bnx2_hw; | |
2568 | cp->stop_cm = cnic_cm_stop_bnx2_hw; | |
2569 | cp->enable_int = cnic_enable_bnx2_int; | |
2570 | cp->disable_int_sync = cnic_disable_bnx2_int_sync; | |
2571 | cp->close_conn = cnic_close_bnx2_conn; | |
2572 | cp->next_idx = cnic_bnx2_next_idx; | |
2573 | cp->hw_idx = cnic_bnx2_hw_idx; | |
2574 | return cdev; | |
2575 | ||
2576 | cnic_err: | |
2577 | dev_put(dev); | |
2578 | return NULL; | |
2579 | } | |
2580 | ||
2581 | static struct cnic_dev *is_cnic_dev(struct net_device *dev) | |
2582 | { | |
2583 | struct ethtool_drvinfo drvinfo; | |
2584 | struct cnic_dev *cdev = NULL; | |
2585 | ||
2586 | if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) { | |
2587 | memset(&drvinfo, 0, sizeof(drvinfo)); | |
2588 | dev->ethtool_ops->get_drvinfo(dev, &drvinfo); | |
2589 | ||
2590 | if (!strcmp(drvinfo.driver, "bnx2")) | |
2591 | cdev = init_bnx2_cnic(dev); | |
2592 | if (cdev) { | |
2593 | write_lock(&cnic_dev_lock); | |
2594 | list_add(&cdev->list, &cnic_dev_list); | |
2595 | write_unlock(&cnic_dev_lock); | |
2596 | } | |
2597 | } | |
2598 | return cdev; | |
2599 | } | |
2600 | ||
2601 | /** | |
2602 | * netdev event handler | |
2603 | */ | |
2604 | static int cnic_netdev_event(struct notifier_block *this, unsigned long event, | |
2605 | void *ptr) | |
2606 | { | |
2607 | struct net_device *netdev = ptr; | |
2608 | struct cnic_dev *dev; | |
2609 | int if_type; | |
2610 | int new_dev = 0; | |
2611 | ||
2612 | dev = cnic_from_netdev(netdev); | |
2613 | ||
2614 | if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) { | |
2615 | /* Check for the hot-plug device */ | |
2616 | dev = is_cnic_dev(netdev); | |
2617 | if (dev) { | |
2618 | new_dev = 1; | |
2619 | cnic_hold(dev); | |
2620 | } | |
2621 | } | |
2622 | if (dev) { | |
2623 | struct cnic_local *cp = dev->cnic_priv; | |
2624 | ||
2625 | if (new_dev) | |
2626 | cnic_ulp_init(dev); | |
2627 | else if (event == NETDEV_UNREGISTER) | |
2628 | cnic_ulp_exit(dev); | |
2629 | else if (event == NETDEV_UP) { | |
2630 | mutex_lock(&cnic_lock); | |
2631 | if (!cnic_start_hw(dev)) | |
2632 | cnic_ulp_start(dev); | |
2633 | mutex_unlock(&cnic_lock); | |
2634 | } | |
2635 | ||
2636 | rcu_read_lock(); | |
2637 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { | |
2638 | struct cnic_ulp_ops *ulp_ops; | |
2639 | void *ctx; | |
2640 | ||
2641 | ulp_ops = rcu_dereference(cp->ulp_ops[if_type]); | |
2642 | if (!ulp_ops || !ulp_ops->indicate_netevent) | |
2643 | continue; | |
2644 | ||
2645 | ctx = cp->ulp_handle[if_type]; | |
2646 | ||
2647 | ulp_ops->indicate_netevent(ctx, event); | |
2648 | } | |
2649 | rcu_read_unlock(); | |
2650 | ||
2651 | if (event == NETDEV_GOING_DOWN) { | |
2652 | mutex_lock(&cnic_lock); | |
2653 | cnic_ulp_stop(dev); | |
2654 | cnic_stop_hw(dev); | |
2655 | mutex_unlock(&cnic_lock); | |
2656 | } else if (event == NETDEV_UNREGISTER) { | |
2657 | write_lock(&cnic_dev_lock); | |
2658 | list_del_init(&dev->list); | |
2659 | write_unlock(&cnic_dev_lock); | |
2660 | ||
2661 | cnic_put(dev); | |
2662 | cnic_free_dev(dev); | |
2663 | goto done; | |
2664 | } | |
2665 | cnic_put(dev); | |
2666 | } | |
2667 | done: | |
2668 | return NOTIFY_DONE; | |
2669 | } | |
2670 | ||
2671 | static struct notifier_block cnic_netdev_notifier = { | |
2672 | .notifier_call = cnic_netdev_event | |
2673 | }; | |
2674 | ||
2675 | static void cnic_release(void) | |
2676 | { | |
2677 | struct cnic_dev *dev; | |
2678 | ||
2679 | while (!list_empty(&cnic_dev_list)) { | |
2680 | dev = list_entry(cnic_dev_list.next, struct cnic_dev, list); | |
2681 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { | |
2682 | cnic_ulp_stop(dev); | |
2683 | cnic_stop_hw(dev); | |
2684 | } | |
2685 | ||
2686 | cnic_ulp_exit(dev); | |
2687 | list_del_init(&dev->list); | |
2688 | cnic_free_dev(dev); | |
2689 | } | |
2690 | } | |
2691 | ||
2692 | static int __init cnic_init(void) | |
2693 | { | |
2694 | int rc = 0; | |
2695 | ||
2696 | printk(KERN_INFO "%s", version); | |
2697 | ||
2698 | rc = register_netdevice_notifier(&cnic_netdev_notifier); | |
2699 | if (rc) { | |
2700 | cnic_release(); | |
2701 | return rc; | |
2702 | } | |
2703 | ||
2704 | return 0; | |
2705 | } | |
2706 | ||
2707 | static void __exit cnic_exit(void) | |
2708 | { | |
2709 | unregister_netdevice_notifier(&cnic_netdev_notifier); | |
2710 | cnic_release(); | |
2711 | return; | |
2712 | } | |
2713 | ||
2714 | module_init(cnic_init); | |
2715 | module_exit(cnic_exit); |