Commit | Line | Data |
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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 | ||
86b53606 MC |
70 | static void cnic_shutdown_rings(struct cnic_dev *); |
71 | static void cnic_init_rings(struct cnic_dev *); | |
a4636960 MC |
72 | static int cnic_cm_set_pg(struct cnic_sock *); |
73 | ||
74 | static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode) | |
75 | { | |
76 | struct cnic_dev *dev = uinfo->priv; | |
77 | struct cnic_local *cp = dev->cnic_priv; | |
78 | ||
79 | if (!capable(CAP_NET_ADMIN)) | |
80 | return -EPERM; | |
81 | ||
82 | if (cp->uio_dev != -1) | |
83 | return -EBUSY; | |
84 | ||
86b53606 MC |
85 | rtnl_lock(); |
86 | if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) { | |
87 | rtnl_unlock(); | |
88 | return -ENODEV; | |
89 | } | |
90 | ||
a4636960 MC |
91 | cp->uio_dev = iminor(inode); |
92 | ||
86b53606 MC |
93 | cnic_init_rings(dev); |
94 | rtnl_unlock(); | |
a4636960 MC |
95 | |
96 | return 0; | |
97 | } | |
98 | ||
99 | static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode) | |
100 | { | |
101 | struct cnic_dev *dev = uinfo->priv; | |
102 | struct cnic_local *cp = dev->cnic_priv; | |
103 | ||
86b53606 | 104 | cnic_shutdown_rings(dev); |
6ef57a0e | 105 | |
a4636960 MC |
106 | cp->uio_dev = -1; |
107 | return 0; | |
108 | } | |
109 | ||
110 | static inline void cnic_hold(struct cnic_dev *dev) | |
111 | { | |
112 | atomic_inc(&dev->ref_count); | |
113 | } | |
114 | ||
115 | static inline void cnic_put(struct cnic_dev *dev) | |
116 | { | |
117 | atomic_dec(&dev->ref_count); | |
118 | } | |
119 | ||
120 | static inline void csk_hold(struct cnic_sock *csk) | |
121 | { | |
122 | atomic_inc(&csk->ref_count); | |
123 | } | |
124 | ||
125 | static inline void csk_put(struct cnic_sock *csk) | |
126 | { | |
127 | atomic_dec(&csk->ref_count); | |
128 | } | |
129 | ||
130 | static struct cnic_dev *cnic_from_netdev(struct net_device *netdev) | |
131 | { | |
132 | struct cnic_dev *cdev; | |
133 | ||
134 | read_lock(&cnic_dev_lock); | |
135 | list_for_each_entry(cdev, &cnic_dev_list, list) { | |
136 | if (netdev == cdev->netdev) { | |
137 | cnic_hold(cdev); | |
138 | read_unlock(&cnic_dev_lock); | |
139 | return cdev; | |
140 | } | |
141 | } | |
142 | read_unlock(&cnic_dev_lock); | |
143 | return NULL; | |
144 | } | |
145 | ||
7fc1ece4 MC |
146 | static inline void ulp_get(struct cnic_ulp_ops *ulp_ops) |
147 | { | |
148 | atomic_inc(&ulp_ops->ref_count); | |
149 | } | |
150 | ||
151 | static inline void ulp_put(struct cnic_ulp_ops *ulp_ops) | |
152 | { | |
153 | atomic_dec(&ulp_ops->ref_count); | |
154 | } | |
155 | ||
a4636960 MC |
156 | static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val) |
157 | { | |
158 | struct cnic_local *cp = dev->cnic_priv; | |
159 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
160 | struct drv_ctl_info info; | |
161 | struct drv_ctl_io *io = &info.data.io; | |
162 | ||
163 | info.cmd = DRV_CTL_CTX_WR_CMD; | |
164 | io->cid_addr = cid_addr; | |
165 | io->offset = off; | |
166 | io->data = val; | |
167 | ethdev->drv_ctl(dev->netdev, &info); | |
168 | } | |
169 | ||
170 | static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val) | |
171 | { | |
172 | struct cnic_local *cp = dev->cnic_priv; | |
173 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
174 | struct drv_ctl_info info; | |
175 | struct drv_ctl_io *io = &info.data.io; | |
176 | ||
177 | info.cmd = DRV_CTL_IO_WR_CMD; | |
178 | io->offset = off; | |
179 | io->data = val; | |
180 | ethdev->drv_ctl(dev->netdev, &info); | |
181 | } | |
182 | ||
183 | static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off) | |
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_IO_RD_CMD; | |
191 | io->offset = off; | |
192 | ethdev->drv_ctl(dev->netdev, &info); | |
193 | return io->data; | |
194 | } | |
195 | ||
196 | static int cnic_in_use(struct cnic_sock *csk) | |
197 | { | |
198 | return test_bit(SK_F_INUSE, &csk->flags); | |
199 | } | |
200 | ||
201 | static void cnic_kwq_completion(struct cnic_dev *dev, u32 count) | |
202 | { | |
203 | struct cnic_local *cp = dev->cnic_priv; | |
204 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
205 | struct drv_ctl_info info; | |
206 | ||
207 | info.cmd = DRV_CTL_COMPLETION_CMD; | |
208 | info.data.comp.comp_count = count; | |
209 | ethdev->drv_ctl(dev->netdev, &info); | |
210 | } | |
211 | ||
212 | static int cnic_send_nlmsg(struct cnic_local *cp, u32 type, | |
213 | struct cnic_sock *csk) | |
214 | { | |
215 | struct iscsi_path path_req; | |
216 | char *buf = NULL; | |
217 | u16 len = 0; | |
218 | u32 msg_type = ISCSI_KEVENT_IF_DOWN; | |
219 | struct cnic_ulp_ops *ulp_ops; | |
220 | ||
221 | if (cp->uio_dev == -1) | |
222 | return -ENODEV; | |
223 | ||
224 | if (csk) { | |
225 | len = sizeof(path_req); | |
226 | buf = (char *) &path_req; | |
227 | memset(&path_req, 0, len); | |
228 | ||
229 | msg_type = ISCSI_KEVENT_PATH_REQ; | |
230 | path_req.handle = (u64) csk->l5_cid; | |
231 | if (test_bit(SK_F_IPV6, &csk->flags)) { | |
232 | memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0], | |
233 | sizeof(struct in6_addr)); | |
234 | path_req.ip_addr_len = 16; | |
235 | } else { | |
236 | memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0], | |
237 | sizeof(struct in_addr)); | |
238 | path_req.ip_addr_len = 4; | |
239 | } | |
240 | path_req.vlan_id = csk->vlan_id; | |
241 | path_req.pmtu = csk->mtu; | |
242 | } | |
243 | ||
244 | rcu_read_lock(); | |
6d7760a8 | 245 | ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]); |
a4636960 MC |
246 | if (ulp_ops) |
247 | ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len); | |
248 | rcu_read_unlock(); | |
249 | return 0; | |
250 | } | |
251 | ||
252 | static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type, | |
253 | char *buf, u16 len) | |
254 | { | |
255 | int rc = -EINVAL; | |
256 | ||
257 | switch (msg_type) { | |
258 | case ISCSI_UEVENT_PATH_UPDATE: { | |
259 | struct cnic_local *cp; | |
260 | u32 l5_cid; | |
261 | struct cnic_sock *csk; | |
262 | struct iscsi_path *path_resp; | |
263 | ||
264 | if (len < sizeof(*path_resp)) | |
265 | break; | |
266 | ||
267 | path_resp = (struct iscsi_path *) buf; | |
268 | cp = dev->cnic_priv; | |
269 | l5_cid = (u32) path_resp->handle; | |
270 | if (l5_cid >= MAX_CM_SK_TBL_SZ) | |
271 | break; | |
272 | ||
273 | csk = &cp->csk_tbl[l5_cid]; | |
274 | csk_hold(csk); | |
275 | if (cnic_in_use(csk)) { | |
276 | memcpy(csk->ha, path_resp->mac_addr, 6); | |
277 | if (test_bit(SK_F_IPV6, &csk->flags)) | |
278 | memcpy(&csk->src_ip[0], &path_resp->src.v6_addr, | |
279 | sizeof(struct in6_addr)); | |
280 | else | |
281 | memcpy(&csk->src_ip[0], &path_resp->src.v4_addr, | |
282 | sizeof(struct in_addr)); | |
283 | if (is_valid_ether_addr(csk->ha)) | |
284 | cnic_cm_set_pg(csk); | |
285 | } | |
286 | csk_put(csk); | |
287 | rc = 0; | |
288 | } | |
289 | } | |
290 | ||
291 | return rc; | |
292 | } | |
293 | ||
294 | static int cnic_offld_prep(struct cnic_sock *csk) | |
295 | { | |
296 | if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) | |
297 | return 0; | |
298 | ||
299 | if (!test_bit(SK_F_CONNECT_START, &csk->flags)) { | |
300 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); | |
301 | return 0; | |
302 | } | |
303 | ||
304 | return 1; | |
305 | } | |
306 | ||
307 | static int cnic_close_prep(struct cnic_sock *csk) | |
308 | { | |
309 | clear_bit(SK_F_CONNECT_START, &csk->flags); | |
310 | smp_mb__after_clear_bit(); | |
311 | ||
312 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { | |
313 | while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) | |
314 | msleep(1); | |
315 | ||
316 | return 1; | |
317 | } | |
318 | return 0; | |
319 | } | |
320 | ||
321 | static int cnic_abort_prep(struct cnic_sock *csk) | |
322 | { | |
323 | clear_bit(SK_F_CONNECT_START, &csk->flags); | |
324 | smp_mb__after_clear_bit(); | |
325 | ||
326 | while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) | |
327 | msleep(1); | |
328 | ||
329 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { | |
330 | csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; | |
331 | return 1; | |
332 | } | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
6d7760a8 MC |
337 | static void cnic_uio_stop(void) |
338 | { | |
339 | struct cnic_dev *dev; | |
340 | ||
341 | read_lock(&cnic_dev_lock); | |
342 | list_for_each_entry(dev, &cnic_dev_list, list) { | |
343 | struct cnic_local *cp = dev->cnic_priv; | |
344 | ||
345 | if (cp->cnic_uinfo) | |
346 | cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); | |
347 | } | |
348 | read_unlock(&cnic_dev_lock); | |
349 | } | |
350 | ||
a4636960 MC |
351 | int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops) |
352 | { | |
353 | struct cnic_dev *dev; | |
354 | ||
355 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { | |
356 | printk(KERN_ERR PFX "cnic_register_driver: Bad type %d\n", | |
357 | ulp_type); | |
358 | return -EINVAL; | |
359 | } | |
360 | mutex_lock(&cnic_lock); | |
361 | if (cnic_ulp_tbl[ulp_type]) { | |
362 | printk(KERN_ERR PFX "cnic_register_driver: Type %d has already " | |
363 | "been registered\n", ulp_type); | |
364 | mutex_unlock(&cnic_lock); | |
365 | return -EBUSY; | |
366 | } | |
367 | ||
368 | read_lock(&cnic_dev_lock); | |
369 | list_for_each_entry(dev, &cnic_dev_list, list) { | |
370 | struct cnic_local *cp = dev->cnic_priv; | |
371 | ||
372 | clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]); | |
373 | } | |
374 | read_unlock(&cnic_dev_lock); | |
375 | ||
7fc1ece4 | 376 | atomic_set(&ulp_ops->ref_count, 0); |
a4636960 MC |
377 | rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops); |
378 | mutex_unlock(&cnic_lock); | |
379 | ||
380 | /* Prevent race conditions with netdev_event */ | |
381 | rtnl_lock(); | |
382 | read_lock(&cnic_dev_lock); | |
383 | list_for_each_entry(dev, &cnic_dev_list, list) { | |
384 | struct cnic_local *cp = dev->cnic_priv; | |
385 | ||
386 | if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type])) | |
387 | ulp_ops->cnic_init(dev); | |
388 | } | |
389 | read_unlock(&cnic_dev_lock); | |
390 | rtnl_unlock(); | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
395 | int cnic_unregister_driver(int ulp_type) | |
396 | { | |
397 | struct cnic_dev *dev; | |
7fc1ece4 MC |
398 | struct cnic_ulp_ops *ulp_ops; |
399 | int i = 0; | |
a4636960 MC |
400 | |
401 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { | |
402 | printk(KERN_ERR PFX "cnic_unregister_driver: Bad type %d\n", | |
403 | ulp_type); | |
404 | return -EINVAL; | |
405 | } | |
406 | mutex_lock(&cnic_lock); | |
7fc1ece4 MC |
407 | ulp_ops = cnic_ulp_tbl[ulp_type]; |
408 | if (!ulp_ops) { | |
a4636960 MC |
409 | printk(KERN_ERR PFX "cnic_unregister_driver: Type %d has not " |
410 | "been registered\n", ulp_type); | |
411 | goto out_unlock; | |
412 | } | |
413 | read_lock(&cnic_dev_lock); | |
414 | list_for_each_entry(dev, &cnic_dev_list, list) { | |
415 | struct cnic_local *cp = dev->cnic_priv; | |
416 | ||
417 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { | |
418 | printk(KERN_ERR PFX "cnic_unregister_driver: Type %d " | |
419 | "still has devices registered\n", ulp_type); | |
420 | read_unlock(&cnic_dev_lock); | |
421 | goto out_unlock; | |
422 | } | |
423 | } | |
424 | read_unlock(&cnic_dev_lock); | |
425 | ||
6d7760a8 MC |
426 | if (ulp_type == CNIC_ULP_ISCSI) |
427 | cnic_uio_stop(); | |
428 | ||
a4636960 MC |
429 | rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL); |
430 | ||
431 | mutex_unlock(&cnic_lock); | |
432 | synchronize_rcu(); | |
7fc1ece4 MC |
433 | while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) { |
434 | msleep(100); | |
435 | i++; | |
436 | } | |
437 | ||
438 | if (atomic_read(&ulp_ops->ref_count) != 0) | |
439 | printk(KERN_WARNING PFX "%s: Failed waiting for ref count to go" | |
440 | " to zero.\n", dev->netdev->name); | |
a4636960 MC |
441 | return 0; |
442 | ||
443 | out_unlock: | |
444 | mutex_unlock(&cnic_lock); | |
445 | return -EINVAL; | |
446 | } | |
447 | ||
448 | static int cnic_start_hw(struct cnic_dev *); | |
449 | static void cnic_stop_hw(struct cnic_dev *); | |
450 | ||
451 | static int cnic_register_device(struct cnic_dev *dev, int ulp_type, | |
452 | void *ulp_ctx) | |
453 | { | |
454 | struct cnic_local *cp = dev->cnic_priv; | |
455 | struct cnic_ulp_ops *ulp_ops; | |
456 | ||
457 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { | |
458 | printk(KERN_ERR PFX "cnic_register_device: Bad type %d\n", | |
459 | ulp_type); | |
460 | return -EINVAL; | |
461 | } | |
462 | mutex_lock(&cnic_lock); | |
463 | if (cnic_ulp_tbl[ulp_type] == NULL) { | |
464 | printk(KERN_ERR PFX "cnic_register_device: Driver with type %d " | |
465 | "has not been registered\n", ulp_type); | |
466 | mutex_unlock(&cnic_lock); | |
467 | return -EAGAIN; | |
468 | } | |
469 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { | |
470 | printk(KERN_ERR PFX "cnic_register_device: Type %d has already " | |
471 | "been registered to this device\n", ulp_type); | |
472 | mutex_unlock(&cnic_lock); | |
473 | return -EBUSY; | |
474 | } | |
475 | ||
476 | clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]); | |
477 | cp->ulp_handle[ulp_type] = ulp_ctx; | |
478 | ulp_ops = cnic_ulp_tbl[ulp_type]; | |
479 | rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops); | |
480 | cnic_hold(dev); | |
481 | ||
482 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) | |
483 | if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type])) | |
484 | ulp_ops->cnic_start(cp->ulp_handle[ulp_type]); | |
485 | ||
486 | mutex_unlock(&cnic_lock); | |
487 | ||
488 | return 0; | |
489 | ||
490 | } | |
491 | EXPORT_SYMBOL(cnic_register_driver); | |
492 | ||
493 | static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type) | |
494 | { | |
495 | struct cnic_local *cp = dev->cnic_priv; | |
681dbd71 | 496 | int i = 0; |
a4636960 MC |
497 | |
498 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { | |
499 | printk(KERN_ERR PFX "cnic_unregister_device: Bad type %d\n", | |
500 | ulp_type); | |
501 | return -EINVAL; | |
502 | } | |
503 | mutex_lock(&cnic_lock); | |
504 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { | |
505 | rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL); | |
506 | cnic_put(dev); | |
507 | } else { | |
508 | printk(KERN_ERR PFX "cnic_unregister_device: device not " | |
509 | "registered to this ulp type %d\n", ulp_type); | |
510 | mutex_unlock(&cnic_lock); | |
511 | return -EINVAL; | |
512 | } | |
513 | mutex_unlock(&cnic_lock); | |
514 | ||
515 | synchronize_rcu(); | |
516 | ||
681dbd71 MC |
517 | while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) && |
518 | i < 20) { | |
519 | msleep(100); | |
520 | i++; | |
521 | } | |
522 | if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type])) | |
523 | printk(KERN_WARNING PFX "%s: Failed waiting for ULP up call" | |
524 | " to complete.\n", dev->netdev->name); | |
525 | ||
a4636960 MC |
526 | return 0; |
527 | } | |
528 | EXPORT_SYMBOL(cnic_unregister_driver); | |
529 | ||
530 | static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id) | |
531 | { | |
532 | id_tbl->start = start_id; | |
533 | id_tbl->max = size; | |
534 | id_tbl->next = 0; | |
535 | spin_lock_init(&id_tbl->lock); | |
536 | id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL); | |
537 | if (!id_tbl->table) | |
538 | return -ENOMEM; | |
539 | ||
540 | return 0; | |
541 | } | |
542 | ||
543 | static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl) | |
544 | { | |
545 | kfree(id_tbl->table); | |
546 | id_tbl->table = NULL; | |
547 | } | |
548 | ||
549 | static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id) | |
550 | { | |
551 | int ret = -1; | |
552 | ||
553 | id -= id_tbl->start; | |
554 | if (id >= id_tbl->max) | |
555 | return ret; | |
556 | ||
557 | spin_lock(&id_tbl->lock); | |
558 | if (!test_bit(id, id_tbl->table)) { | |
559 | set_bit(id, id_tbl->table); | |
560 | ret = 0; | |
561 | } | |
562 | spin_unlock(&id_tbl->lock); | |
563 | return ret; | |
564 | } | |
565 | ||
566 | /* Returns -1 if not successful */ | |
567 | static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl) | |
568 | { | |
569 | u32 id; | |
570 | ||
571 | spin_lock(&id_tbl->lock); | |
572 | id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); | |
573 | if (id >= id_tbl->max) { | |
574 | id = -1; | |
575 | if (id_tbl->next != 0) { | |
576 | id = find_first_zero_bit(id_tbl->table, id_tbl->next); | |
577 | if (id >= id_tbl->next) | |
578 | id = -1; | |
579 | } | |
580 | } | |
581 | ||
582 | if (id < id_tbl->max) { | |
583 | set_bit(id, id_tbl->table); | |
584 | id_tbl->next = (id + 1) & (id_tbl->max - 1); | |
585 | id += id_tbl->start; | |
586 | } | |
587 | ||
588 | spin_unlock(&id_tbl->lock); | |
589 | ||
590 | return id; | |
591 | } | |
592 | ||
593 | static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id) | |
594 | { | |
595 | if (id == -1) | |
596 | return; | |
597 | ||
598 | id -= id_tbl->start; | |
599 | if (id >= id_tbl->max) | |
600 | return; | |
601 | ||
602 | clear_bit(id, id_tbl->table); | |
603 | } | |
604 | ||
605 | static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma) | |
606 | { | |
607 | int i; | |
608 | ||
609 | if (!dma->pg_arr) | |
610 | return; | |
611 | ||
612 | for (i = 0; i < dma->num_pages; i++) { | |
613 | if (dma->pg_arr[i]) { | |
614 | pci_free_consistent(dev->pcidev, BCM_PAGE_SIZE, | |
615 | dma->pg_arr[i], dma->pg_map_arr[i]); | |
616 | dma->pg_arr[i] = NULL; | |
617 | } | |
618 | } | |
619 | if (dma->pgtbl) { | |
620 | pci_free_consistent(dev->pcidev, dma->pgtbl_size, | |
621 | dma->pgtbl, dma->pgtbl_map); | |
622 | dma->pgtbl = NULL; | |
623 | } | |
624 | kfree(dma->pg_arr); | |
625 | dma->pg_arr = NULL; | |
626 | dma->num_pages = 0; | |
627 | } | |
628 | ||
629 | static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma) | |
630 | { | |
631 | int i; | |
632 | u32 *page_table = dma->pgtbl; | |
633 | ||
634 | for (i = 0; i < dma->num_pages; i++) { | |
635 | /* Each entry needs to be in big endian format. */ | |
636 | *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32); | |
637 | page_table++; | |
638 | *page_table = (u32) dma->pg_map_arr[i]; | |
639 | page_table++; | |
640 | } | |
641 | } | |
642 | ||
643 | static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma, | |
644 | int pages, int use_pg_tbl) | |
645 | { | |
646 | int i, size; | |
647 | struct cnic_local *cp = dev->cnic_priv; | |
648 | ||
649 | size = pages * (sizeof(void *) + sizeof(dma_addr_t)); | |
650 | dma->pg_arr = kzalloc(size, GFP_ATOMIC); | |
651 | if (dma->pg_arr == NULL) | |
652 | return -ENOMEM; | |
653 | ||
654 | dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages); | |
655 | dma->num_pages = pages; | |
656 | ||
657 | for (i = 0; i < pages; i++) { | |
658 | dma->pg_arr[i] = pci_alloc_consistent(dev->pcidev, | |
659 | BCM_PAGE_SIZE, | |
660 | &dma->pg_map_arr[i]); | |
661 | if (dma->pg_arr[i] == NULL) | |
662 | goto error; | |
663 | } | |
664 | if (!use_pg_tbl) | |
665 | return 0; | |
666 | ||
667 | dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) & | |
668 | ~(BCM_PAGE_SIZE - 1); | |
669 | dma->pgtbl = pci_alloc_consistent(dev->pcidev, dma->pgtbl_size, | |
670 | &dma->pgtbl_map); | |
671 | if (dma->pgtbl == NULL) | |
672 | goto error; | |
673 | ||
674 | cp->setup_pgtbl(dev, dma); | |
675 | ||
676 | return 0; | |
677 | ||
678 | error: | |
679 | cnic_free_dma(dev, dma); | |
680 | return -ENOMEM; | |
681 | } | |
682 | ||
86b53606 MC |
683 | static void cnic_free_context(struct cnic_dev *dev) |
684 | { | |
685 | struct cnic_local *cp = dev->cnic_priv; | |
686 | int i; | |
687 | ||
688 | for (i = 0; i < cp->ctx_blks; i++) { | |
689 | if (cp->ctx_arr[i].ctx) { | |
690 | pci_free_consistent(dev->pcidev, cp->ctx_blk_size, | |
691 | cp->ctx_arr[i].ctx, | |
692 | cp->ctx_arr[i].mapping); | |
693 | cp->ctx_arr[i].ctx = NULL; | |
694 | } | |
695 | } | |
696 | } | |
697 | ||
a4636960 MC |
698 | static void cnic_free_resc(struct cnic_dev *dev) |
699 | { | |
700 | struct cnic_local *cp = dev->cnic_priv; | |
701 | int i = 0; | |
702 | ||
703 | if (cp->cnic_uinfo) { | |
a4636960 MC |
704 | while (cp->uio_dev != -1 && i < 15) { |
705 | msleep(100); | |
706 | i++; | |
707 | } | |
708 | uio_unregister_device(cp->cnic_uinfo); | |
709 | kfree(cp->cnic_uinfo); | |
710 | cp->cnic_uinfo = NULL; | |
711 | } | |
712 | ||
713 | if (cp->l2_buf) { | |
714 | pci_free_consistent(dev->pcidev, cp->l2_buf_size, | |
715 | cp->l2_buf, cp->l2_buf_map); | |
716 | cp->l2_buf = NULL; | |
717 | } | |
718 | ||
719 | if (cp->l2_ring) { | |
720 | pci_free_consistent(dev->pcidev, cp->l2_ring_size, | |
721 | cp->l2_ring, cp->l2_ring_map); | |
722 | cp->l2_ring = NULL; | |
723 | } | |
724 | ||
86b53606 | 725 | cnic_free_context(dev); |
a4636960 MC |
726 | kfree(cp->ctx_arr); |
727 | cp->ctx_arr = NULL; | |
728 | cp->ctx_blks = 0; | |
729 | ||
730 | cnic_free_dma(dev, &cp->gbl_buf_info); | |
731 | cnic_free_dma(dev, &cp->conn_buf_info); | |
732 | cnic_free_dma(dev, &cp->kwq_info); | |
733 | cnic_free_dma(dev, &cp->kcq_info); | |
734 | kfree(cp->iscsi_tbl); | |
735 | cp->iscsi_tbl = NULL; | |
736 | kfree(cp->ctx_tbl); | |
737 | cp->ctx_tbl = NULL; | |
738 | ||
739 | cnic_free_id_tbl(&cp->cid_tbl); | |
740 | } | |
741 | ||
742 | static int cnic_alloc_context(struct cnic_dev *dev) | |
743 | { | |
744 | struct cnic_local *cp = dev->cnic_priv; | |
745 | ||
746 | if (CHIP_NUM(cp) == CHIP_NUM_5709) { | |
747 | int i, k, arr_size; | |
748 | ||
749 | cp->ctx_blk_size = BCM_PAGE_SIZE; | |
750 | cp->cids_per_blk = BCM_PAGE_SIZE / 128; | |
751 | arr_size = BNX2_MAX_CID / cp->cids_per_blk * | |
752 | sizeof(struct cnic_ctx); | |
753 | cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL); | |
754 | if (cp->ctx_arr == NULL) | |
755 | return -ENOMEM; | |
756 | ||
757 | k = 0; | |
758 | for (i = 0; i < 2; i++) { | |
759 | u32 j, reg, off, lo, hi; | |
760 | ||
761 | if (i == 0) | |
762 | off = BNX2_PG_CTX_MAP; | |
763 | else | |
764 | off = BNX2_ISCSI_CTX_MAP; | |
765 | ||
766 | reg = cnic_reg_rd_ind(dev, off); | |
767 | lo = reg >> 16; | |
768 | hi = reg & 0xffff; | |
769 | for (j = lo; j < hi; j += cp->cids_per_blk, k++) | |
770 | cp->ctx_arr[k].cid = j; | |
771 | } | |
772 | ||
773 | cp->ctx_blks = k; | |
774 | if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) { | |
775 | cp->ctx_blks = 0; | |
776 | return -ENOMEM; | |
777 | } | |
778 | ||
779 | for (i = 0; i < cp->ctx_blks; i++) { | |
780 | cp->ctx_arr[i].ctx = | |
781 | pci_alloc_consistent(dev->pcidev, BCM_PAGE_SIZE, | |
782 | &cp->ctx_arr[i].mapping); | |
783 | if (cp->ctx_arr[i].ctx == NULL) | |
784 | return -ENOMEM; | |
785 | } | |
786 | } | |
787 | return 0; | |
788 | } | |
789 | ||
ec0248ea MC |
790 | static int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages) |
791 | { | |
792 | struct cnic_local *cp = dev->cnic_priv; | |
793 | ||
794 | cp->l2_ring_size = pages * BCM_PAGE_SIZE; | |
795 | cp->l2_ring = pci_alloc_consistent(dev->pcidev, cp->l2_ring_size, | |
796 | &cp->l2_ring_map); | |
797 | if (!cp->l2_ring) | |
798 | return -ENOMEM; | |
799 | ||
800 | cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size; | |
801 | cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size); | |
802 | cp->l2_buf = pci_alloc_consistent(dev->pcidev, cp->l2_buf_size, | |
803 | &cp->l2_buf_map); | |
804 | if (!cp->l2_buf) | |
805 | return -ENOMEM; | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
5e9b2dbf | 810 | static int cnic_alloc_uio(struct cnic_dev *dev) { |
a4636960 MC |
811 | struct cnic_local *cp = dev->cnic_priv; |
812 | struct uio_info *uinfo; | |
813 | int ret; | |
814 | ||
a4636960 MC |
815 | uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC); |
816 | if (!uinfo) | |
5e9b2dbf | 817 | return -ENOMEM; |
a4636960 MC |
818 | |
819 | uinfo->mem[0].addr = dev->netdev->base_addr; | |
820 | uinfo->mem[0].internal_addr = dev->regview; | |
821 | uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start; | |
822 | uinfo->mem[0].memtype = UIO_MEM_PHYS; | |
823 | ||
5e9b2dbf | 824 | if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { |
86b53606 | 825 | uinfo->mem[1].addr = (unsigned long) cp->status_blk & PAGE_MASK; |
5e9b2dbf MC |
826 | if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) |
827 | uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9; | |
828 | else | |
829 | uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE; | |
830 | ||
831 | uinfo->name = "bnx2_cnic"; | |
832 | } | |
833 | ||
a4636960 MC |
834 | uinfo->mem[1].memtype = UIO_MEM_LOGICAL; |
835 | ||
836 | uinfo->mem[2].addr = (unsigned long) cp->l2_ring; | |
837 | uinfo->mem[2].size = cp->l2_ring_size; | |
838 | uinfo->mem[2].memtype = UIO_MEM_LOGICAL; | |
839 | ||
840 | uinfo->mem[3].addr = (unsigned long) cp->l2_buf; | |
841 | uinfo->mem[3].size = cp->l2_buf_size; | |
842 | uinfo->mem[3].memtype = UIO_MEM_LOGICAL; | |
843 | ||
a4636960 MC |
844 | uinfo->version = CNIC_MODULE_VERSION; |
845 | uinfo->irq = UIO_IRQ_CUSTOM; | |
846 | ||
847 | uinfo->open = cnic_uio_open; | |
848 | uinfo->release = cnic_uio_close; | |
849 | ||
850 | uinfo->priv = dev; | |
851 | ||
852 | ret = uio_register_device(&dev->pcidev->dev, uinfo); | |
853 | if (ret) { | |
854 | kfree(uinfo); | |
5e9b2dbf | 855 | return ret; |
a4636960 MC |
856 | } |
857 | ||
858 | cp->cnic_uinfo = uinfo; | |
5e9b2dbf MC |
859 | return 0; |
860 | } | |
861 | ||
862 | static int cnic_alloc_bnx2_resc(struct cnic_dev *dev) | |
863 | { | |
864 | struct cnic_local *cp = dev->cnic_priv; | |
865 | int ret; | |
866 | ||
867 | ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1); | |
868 | if (ret) | |
869 | goto error; | |
870 | cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr; | |
871 | ||
872 | ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1); | |
873 | if (ret) | |
874 | goto error; | |
875 | cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr; | |
876 | ||
877 | ret = cnic_alloc_context(dev); | |
878 | if (ret) | |
879 | goto error; | |
880 | ||
881 | ret = cnic_alloc_l2_rings(dev, 2); | |
882 | if (ret) | |
883 | goto error; | |
884 | ||
885 | ret = cnic_alloc_uio(dev); | |
886 | if (ret) | |
887 | goto error; | |
a4636960 MC |
888 | |
889 | return 0; | |
890 | ||
891 | error: | |
892 | cnic_free_resc(dev); | |
893 | return ret; | |
894 | } | |
895 | ||
896 | static inline u32 cnic_kwq_avail(struct cnic_local *cp) | |
897 | { | |
898 | return cp->max_kwq_idx - | |
899 | ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx); | |
900 | } | |
901 | ||
902 | static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[], | |
903 | u32 num_wqes) | |
904 | { | |
905 | struct cnic_local *cp = dev->cnic_priv; | |
906 | struct kwqe *prod_qe; | |
907 | u16 prod, sw_prod, i; | |
908 | ||
909 | if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) | |
910 | return -EAGAIN; /* bnx2 is down */ | |
911 | ||
912 | spin_lock_bh(&cp->cnic_ulp_lock); | |
913 | if (num_wqes > cnic_kwq_avail(cp) && | |
914 | !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) { | |
915 | spin_unlock_bh(&cp->cnic_ulp_lock); | |
916 | return -EAGAIN; | |
917 | } | |
918 | ||
919 | cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT; | |
920 | ||
921 | prod = cp->kwq_prod_idx; | |
922 | sw_prod = prod & MAX_KWQ_IDX; | |
923 | for (i = 0; i < num_wqes; i++) { | |
924 | prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)]; | |
925 | memcpy(prod_qe, wqes[i], sizeof(struct kwqe)); | |
926 | prod++; | |
927 | sw_prod = prod & MAX_KWQ_IDX; | |
928 | } | |
929 | cp->kwq_prod_idx = prod; | |
930 | ||
931 | CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx); | |
932 | ||
933 | spin_unlock_bh(&cp->cnic_ulp_lock); | |
934 | return 0; | |
935 | } | |
936 | ||
937 | static void service_kcqes(struct cnic_dev *dev, int num_cqes) | |
938 | { | |
939 | struct cnic_local *cp = dev->cnic_priv; | |
940 | int i, j; | |
941 | ||
942 | i = 0; | |
943 | j = 1; | |
944 | while (num_cqes) { | |
945 | struct cnic_ulp_ops *ulp_ops; | |
946 | int ulp_type; | |
947 | u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag; | |
948 | u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK; | |
949 | ||
950 | if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION)) | |
951 | cnic_kwq_completion(dev, 1); | |
952 | ||
953 | while (j < num_cqes) { | |
954 | u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag; | |
955 | ||
956 | if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer) | |
957 | break; | |
958 | ||
959 | if (unlikely(next_op & KCQE_RAMROD_COMPLETION)) | |
960 | cnic_kwq_completion(dev, 1); | |
961 | j++; | |
962 | } | |
963 | ||
964 | if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA) | |
965 | ulp_type = CNIC_ULP_RDMA; | |
966 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI) | |
967 | ulp_type = CNIC_ULP_ISCSI; | |
968 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4) | |
969 | ulp_type = CNIC_ULP_L4; | |
970 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2) | |
971 | goto end; | |
972 | else { | |
973 | printk(KERN_ERR PFX "%s: Unknown type of KCQE(0x%x)\n", | |
974 | dev->netdev->name, kcqe_op_flag); | |
975 | goto end; | |
976 | } | |
977 | ||
978 | rcu_read_lock(); | |
979 | ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); | |
980 | if (likely(ulp_ops)) { | |
981 | ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type], | |
982 | cp->completed_kcq + i, j); | |
983 | } | |
984 | rcu_read_unlock(); | |
985 | end: | |
986 | num_cqes -= j; | |
987 | i += j; | |
988 | j = 1; | |
989 | } | |
990 | return; | |
991 | } | |
992 | ||
993 | static u16 cnic_bnx2_next_idx(u16 idx) | |
994 | { | |
995 | return idx + 1; | |
996 | } | |
997 | ||
998 | static u16 cnic_bnx2_hw_idx(u16 idx) | |
999 | { | |
1000 | return idx; | |
1001 | } | |
1002 | ||
1003 | static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod) | |
1004 | { | |
1005 | struct cnic_local *cp = dev->cnic_priv; | |
1006 | u16 i, ri, last; | |
1007 | struct kcqe *kcqe; | |
1008 | int kcqe_cnt = 0, last_cnt = 0; | |
1009 | ||
1010 | i = ri = last = *sw_prod; | |
1011 | ri &= MAX_KCQ_IDX; | |
1012 | ||
1013 | while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) { | |
1014 | kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)]; | |
1015 | cp->completed_kcq[kcqe_cnt++] = kcqe; | |
1016 | i = cp->next_idx(i); | |
1017 | ri = i & MAX_KCQ_IDX; | |
1018 | if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) { | |
1019 | last_cnt = kcqe_cnt; | |
1020 | last = i; | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | *sw_prod = last; | |
1025 | return last_cnt; | |
1026 | } | |
1027 | ||
86b53606 | 1028 | static void cnic_chk_pkt_rings(struct cnic_local *cp) |
a4636960 MC |
1029 | { |
1030 | u16 rx_cons = *cp->rx_cons_ptr; | |
1031 | u16 tx_cons = *cp->tx_cons_ptr; | |
1032 | ||
1033 | if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) { | |
1034 | cp->tx_cons = tx_cons; | |
1035 | cp->rx_cons = rx_cons; | |
1036 | uio_event_notify(cp->cnic_uinfo); | |
1037 | } | |
1038 | } | |
1039 | ||
1040 | static int cnic_service_bnx2(void *data, void *status_blk) | |
1041 | { | |
1042 | struct cnic_dev *dev = data; | |
1043 | struct status_block *sblk = status_blk; | |
1044 | struct cnic_local *cp = dev->cnic_priv; | |
1045 | u32 status_idx = sblk->status_idx; | |
1046 | u16 hw_prod, sw_prod; | |
1047 | int kcqe_cnt; | |
1048 | ||
1049 | if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) | |
1050 | return status_idx; | |
1051 | ||
1052 | cp->kwq_con_idx = *cp->kwq_con_idx_ptr; | |
1053 | ||
1054 | hw_prod = sblk->status_completion_producer_index; | |
1055 | sw_prod = cp->kcq_prod_idx; | |
1056 | while (sw_prod != hw_prod) { | |
1057 | kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); | |
1058 | if (kcqe_cnt == 0) | |
1059 | goto done; | |
1060 | ||
1061 | service_kcqes(dev, kcqe_cnt); | |
1062 | ||
1063 | /* Tell compiler that status_blk fields can change. */ | |
1064 | barrier(); | |
1065 | if (status_idx != sblk->status_idx) { | |
1066 | status_idx = sblk->status_idx; | |
1067 | cp->kwq_con_idx = *cp->kwq_con_idx_ptr; | |
1068 | hw_prod = sblk->status_completion_producer_index; | |
1069 | } else | |
1070 | break; | |
1071 | } | |
1072 | ||
1073 | done: | |
1074 | CNIC_WR16(dev, cp->kcq_io_addr, sw_prod); | |
1075 | ||
1076 | cp->kcq_prod_idx = sw_prod; | |
1077 | ||
86b53606 | 1078 | cnic_chk_pkt_rings(cp); |
a4636960 MC |
1079 | return status_idx; |
1080 | } | |
1081 | ||
1082 | static void cnic_service_bnx2_msix(unsigned long data) | |
1083 | { | |
1084 | struct cnic_dev *dev = (struct cnic_dev *) data; | |
1085 | struct cnic_local *cp = dev->cnic_priv; | |
1086 | struct status_block_msix *status_blk = cp->bnx2_status_blk; | |
1087 | u32 status_idx = status_blk->status_idx; | |
1088 | u16 hw_prod, sw_prod; | |
1089 | int kcqe_cnt; | |
1090 | ||
1091 | cp->kwq_con_idx = status_blk->status_cmd_consumer_index; | |
1092 | ||
1093 | hw_prod = status_blk->status_completion_producer_index; | |
1094 | sw_prod = cp->kcq_prod_idx; | |
1095 | while (sw_prod != hw_prod) { | |
1096 | kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); | |
1097 | if (kcqe_cnt == 0) | |
1098 | goto done; | |
1099 | ||
1100 | service_kcqes(dev, kcqe_cnt); | |
1101 | ||
1102 | /* Tell compiler that status_blk fields can change. */ | |
1103 | barrier(); | |
1104 | if (status_idx != status_blk->status_idx) { | |
1105 | status_idx = status_blk->status_idx; | |
1106 | cp->kwq_con_idx = status_blk->status_cmd_consumer_index; | |
1107 | hw_prod = status_blk->status_completion_producer_index; | |
1108 | } else | |
1109 | break; | |
1110 | } | |
1111 | ||
1112 | done: | |
1113 | CNIC_WR16(dev, cp->kcq_io_addr, sw_prod); | |
1114 | cp->kcq_prod_idx = sw_prod; | |
1115 | ||
86b53606 | 1116 | cnic_chk_pkt_rings(cp); |
a4636960 MC |
1117 | |
1118 | cp->last_status_idx = status_idx; | |
1119 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | | |
1120 | BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); | |
1121 | } | |
1122 | ||
1123 | static irqreturn_t cnic_irq(int irq, void *dev_instance) | |
1124 | { | |
1125 | struct cnic_dev *dev = dev_instance; | |
1126 | struct cnic_local *cp = dev->cnic_priv; | |
1127 | u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX; | |
1128 | ||
1129 | if (cp->ack_int) | |
1130 | cp->ack_int(dev); | |
1131 | ||
1132 | prefetch(cp->status_blk); | |
1133 | prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]); | |
1134 | ||
1135 | if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) | |
1136 | tasklet_schedule(&cp->cnic_irq_task); | |
1137 | ||
1138 | return IRQ_HANDLED; | |
1139 | } | |
1140 | ||
1141 | static void cnic_ulp_stop(struct cnic_dev *dev) | |
1142 | { | |
1143 | struct cnic_local *cp = dev->cnic_priv; | |
1144 | int if_type; | |
1145 | ||
6d7760a8 MC |
1146 | if (cp->cnic_uinfo) |
1147 | cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); | |
1148 | ||
a4636960 MC |
1149 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { |
1150 | struct cnic_ulp_ops *ulp_ops; | |
1151 | ||
681dbd71 MC |
1152 | mutex_lock(&cnic_lock); |
1153 | ulp_ops = cp->ulp_ops[if_type]; | |
1154 | if (!ulp_ops) { | |
1155 | mutex_unlock(&cnic_lock); | |
a4636960 | 1156 | continue; |
681dbd71 MC |
1157 | } |
1158 | set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); | |
1159 | mutex_unlock(&cnic_lock); | |
a4636960 MC |
1160 | |
1161 | if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type])) | |
1162 | ulp_ops->cnic_stop(cp->ulp_handle[if_type]); | |
681dbd71 MC |
1163 | |
1164 | clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); | |
a4636960 | 1165 | } |
a4636960 MC |
1166 | } |
1167 | ||
1168 | static void cnic_ulp_start(struct cnic_dev *dev) | |
1169 | { | |
1170 | struct cnic_local *cp = dev->cnic_priv; | |
1171 | int if_type; | |
1172 | ||
a4636960 MC |
1173 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { |
1174 | struct cnic_ulp_ops *ulp_ops; | |
1175 | ||
681dbd71 MC |
1176 | mutex_lock(&cnic_lock); |
1177 | ulp_ops = cp->ulp_ops[if_type]; | |
1178 | if (!ulp_ops || !ulp_ops->cnic_start) { | |
1179 | mutex_unlock(&cnic_lock); | |
a4636960 | 1180 | continue; |
681dbd71 MC |
1181 | } |
1182 | set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); | |
1183 | mutex_unlock(&cnic_lock); | |
a4636960 MC |
1184 | |
1185 | if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type])) | |
1186 | ulp_ops->cnic_start(cp->ulp_handle[if_type]); | |
681dbd71 MC |
1187 | |
1188 | clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); | |
a4636960 | 1189 | } |
a4636960 MC |
1190 | } |
1191 | ||
1192 | static int cnic_ctl(void *data, struct cnic_ctl_info *info) | |
1193 | { | |
1194 | struct cnic_dev *dev = data; | |
1195 | ||
1196 | switch (info->cmd) { | |
1197 | case CNIC_CTL_STOP_CMD: | |
1198 | cnic_hold(dev); | |
a4636960 MC |
1199 | |
1200 | cnic_ulp_stop(dev); | |
1201 | cnic_stop_hw(dev); | |
1202 | ||
a4636960 MC |
1203 | cnic_put(dev); |
1204 | break; | |
1205 | case CNIC_CTL_START_CMD: | |
1206 | cnic_hold(dev); | |
a4636960 MC |
1207 | |
1208 | if (!cnic_start_hw(dev)) | |
1209 | cnic_ulp_start(dev); | |
1210 | ||
a4636960 MC |
1211 | cnic_put(dev); |
1212 | break; | |
1213 | default: | |
1214 | return -EINVAL; | |
1215 | } | |
1216 | return 0; | |
1217 | } | |
1218 | ||
1219 | static void cnic_ulp_init(struct cnic_dev *dev) | |
1220 | { | |
1221 | int i; | |
1222 | struct cnic_local *cp = dev->cnic_priv; | |
1223 | ||
a4636960 MC |
1224 | for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) { |
1225 | struct cnic_ulp_ops *ulp_ops; | |
1226 | ||
7fc1ece4 MC |
1227 | mutex_lock(&cnic_lock); |
1228 | ulp_ops = cnic_ulp_tbl[i]; | |
1229 | if (!ulp_ops || !ulp_ops->cnic_init) { | |
1230 | mutex_unlock(&cnic_lock); | |
a4636960 | 1231 | continue; |
7fc1ece4 MC |
1232 | } |
1233 | ulp_get(ulp_ops); | |
1234 | mutex_unlock(&cnic_lock); | |
a4636960 MC |
1235 | |
1236 | if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i])) | |
1237 | ulp_ops->cnic_init(dev); | |
1238 | ||
7fc1ece4 | 1239 | ulp_put(ulp_ops); |
a4636960 | 1240 | } |
a4636960 MC |
1241 | } |
1242 | ||
1243 | static void cnic_ulp_exit(struct cnic_dev *dev) | |
1244 | { | |
1245 | int i; | |
1246 | struct cnic_local *cp = dev->cnic_priv; | |
1247 | ||
a4636960 MC |
1248 | for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) { |
1249 | struct cnic_ulp_ops *ulp_ops; | |
1250 | ||
7fc1ece4 MC |
1251 | mutex_lock(&cnic_lock); |
1252 | ulp_ops = cnic_ulp_tbl[i]; | |
1253 | if (!ulp_ops || !ulp_ops->cnic_exit) { | |
1254 | mutex_unlock(&cnic_lock); | |
a4636960 | 1255 | continue; |
7fc1ece4 MC |
1256 | } |
1257 | ulp_get(ulp_ops); | |
1258 | mutex_unlock(&cnic_lock); | |
a4636960 MC |
1259 | |
1260 | if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i])) | |
1261 | ulp_ops->cnic_exit(dev); | |
1262 | ||
7fc1ece4 | 1263 | ulp_put(ulp_ops); |
a4636960 | 1264 | } |
a4636960 MC |
1265 | } |
1266 | ||
1267 | static int cnic_cm_offload_pg(struct cnic_sock *csk) | |
1268 | { | |
1269 | struct cnic_dev *dev = csk->dev; | |
1270 | struct l4_kwq_offload_pg *l4kwqe; | |
1271 | struct kwqe *wqes[1]; | |
1272 | ||
1273 | l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1; | |
1274 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1275 | wqes[0] = (struct kwqe *) l4kwqe; | |
1276 | ||
1277 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG; | |
1278 | l4kwqe->flags = | |
1279 | L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT; | |
1280 | l4kwqe->l2hdr_nbytes = ETH_HLEN; | |
1281 | ||
1282 | l4kwqe->da0 = csk->ha[0]; | |
1283 | l4kwqe->da1 = csk->ha[1]; | |
1284 | l4kwqe->da2 = csk->ha[2]; | |
1285 | l4kwqe->da3 = csk->ha[3]; | |
1286 | l4kwqe->da4 = csk->ha[4]; | |
1287 | l4kwqe->da5 = csk->ha[5]; | |
1288 | ||
1289 | l4kwqe->sa0 = dev->mac_addr[0]; | |
1290 | l4kwqe->sa1 = dev->mac_addr[1]; | |
1291 | l4kwqe->sa2 = dev->mac_addr[2]; | |
1292 | l4kwqe->sa3 = dev->mac_addr[3]; | |
1293 | l4kwqe->sa4 = dev->mac_addr[4]; | |
1294 | l4kwqe->sa5 = dev->mac_addr[5]; | |
1295 | ||
1296 | l4kwqe->etype = ETH_P_IP; | |
1297 | l4kwqe->ipid_count = DEF_IPID_COUNT; | |
1298 | l4kwqe->host_opaque = csk->l5_cid; | |
1299 | ||
1300 | if (csk->vlan_id) { | |
1301 | l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING; | |
1302 | l4kwqe->vlan_tag = csk->vlan_id; | |
1303 | l4kwqe->l2hdr_nbytes += 4; | |
1304 | } | |
1305 | ||
1306 | return dev->submit_kwqes(dev, wqes, 1); | |
1307 | } | |
1308 | ||
1309 | static int cnic_cm_update_pg(struct cnic_sock *csk) | |
1310 | { | |
1311 | struct cnic_dev *dev = csk->dev; | |
1312 | struct l4_kwq_update_pg *l4kwqe; | |
1313 | struct kwqe *wqes[1]; | |
1314 | ||
1315 | l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1; | |
1316 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1317 | wqes[0] = (struct kwqe *) l4kwqe; | |
1318 | ||
1319 | l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG; | |
1320 | l4kwqe->flags = | |
1321 | L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT; | |
1322 | l4kwqe->pg_cid = csk->pg_cid; | |
1323 | ||
1324 | l4kwqe->da0 = csk->ha[0]; | |
1325 | l4kwqe->da1 = csk->ha[1]; | |
1326 | l4kwqe->da2 = csk->ha[2]; | |
1327 | l4kwqe->da3 = csk->ha[3]; | |
1328 | l4kwqe->da4 = csk->ha[4]; | |
1329 | l4kwqe->da5 = csk->ha[5]; | |
1330 | ||
1331 | l4kwqe->pg_host_opaque = csk->l5_cid; | |
1332 | l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA; | |
1333 | ||
1334 | return dev->submit_kwqes(dev, wqes, 1); | |
1335 | } | |
1336 | ||
1337 | static int cnic_cm_upload_pg(struct cnic_sock *csk) | |
1338 | { | |
1339 | struct cnic_dev *dev = csk->dev; | |
1340 | struct l4_kwq_upload *l4kwqe; | |
1341 | struct kwqe *wqes[1]; | |
1342 | ||
1343 | l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1; | |
1344 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1345 | wqes[0] = (struct kwqe *) l4kwqe; | |
1346 | ||
1347 | l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG; | |
1348 | l4kwqe->flags = | |
1349 | L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT; | |
1350 | l4kwqe->cid = csk->pg_cid; | |
1351 | ||
1352 | return dev->submit_kwqes(dev, wqes, 1); | |
1353 | } | |
1354 | ||
1355 | static int cnic_cm_conn_req(struct cnic_sock *csk) | |
1356 | { | |
1357 | struct cnic_dev *dev = csk->dev; | |
1358 | struct l4_kwq_connect_req1 *l4kwqe1; | |
1359 | struct l4_kwq_connect_req2 *l4kwqe2; | |
1360 | struct l4_kwq_connect_req3 *l4kwqe3; | |
1361 | struct kwqe *wqes[3]; | |
1362 | u8 tcp_flags = 0; | |
1363 | int num_wqes = 2; | |
1364 | ||
1365 | l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1; | |
1366 | l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2; | |
1367 | l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3; | |
1368 | memset(l4kwqe1, 0, sizeof(*l4kwqe1)); | |
1369 | memset(l4kwqe2, 0, sizeof(*l4kwqe2)); | |
1370 | memset(l4kwqe3, 0, sizeof(*l4kwqe3)); | |
1371 | ||
1372 | l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3; | |
1373 | l4kwqe3->flags = | |
1374 | L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT; | |
1375 | l4kwqe3->ka_timeout = csk->ka_timeout; | |
1376 | l4kwqe3->ka_interval = csk->ka_interval; | |
1377 | l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count; | |
1378 | l4kwqe3->tos = csk->tos; | |
1379 | l4kwqe3->ttl = csk->ttl; | |
1380 | l4kwqe3->snd_seq_scale = csk->snd_seq_scale; | |
1381 | l4kwqe3->pmtu = csk->mtu; | |
1382 | l4kwqe3->rcv_buf = csk->rcv_buf; | |
1383 | l4kwqe3->snd_buf = csk->snd_buf; | |
1384 | l4kwqe3->seed = csk->seed; | |
1385 | ||
1386 | wqes[0] = (struct kwqe *) l4kwqe1; | |
1387 | if (test_bit(SK_F_IPV6, &csk->flags)) { | |
1388 | wqes[1] = (struct kwqe *) l4kwqe2; | |
1389 | wqes[2] = (struct kwqe *) l4kwqe3; | |
1390 | num_wqes = 3; | |
1391 | ||
1392 | l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6; | |
1393 | l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2; | |
1394 | l4kwqe2->flags = | |
1395 | L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT | | |
1396 | L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT; | |
1397 | l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]); | |
1398 | l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]); | |
1399 | l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]); | |
1400 | l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]); | |
1401 | l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]); | |
1402 | l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]); | |
1403 | l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) - | |
1404 | sizeof(struct tcphdr); | |
1405 | } else { | |
1406 | wqes[1] = (struct kwqe *) l4kwqe3; | |
1407 | l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) - | |
1408 | sizeof(struct tcphdr); | |
1409 | } | |
1410 | ||
1411 | l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1; | |
1412 | l4kwqe1->flags = | |
1413 | (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) | | |
1414 | L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT; | |
1415 | l4kwqe1->cid = csk->cid; | |
1416 | l4kwqe1->pg_cid = csk->pg_cid; | |
1417 | l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]); | |
1418 | l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]); | |
1419 | l4kwqe1->src_port = be16_to_cpu(csk->src_port); | |
1420 | l4kwqe1->dst_port = be16_to_cpu(csk->dst_port); | |
1421 | if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK) | |
1422 | tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK; | |
1423 | if (csk->tcp_flags & SK_TCP_KEEP_ALIVE) | |
1424 | tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE; | |
1425 | if (csk->tcp_flags & SK_TCP_NAGLE) | |
1426 | tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE; | |
1427 | if (csk->tcp_flags & SK_TCP_TIMESTAMP) | |
1428 | tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP; | |
1429 | if (csk->tcp_flags & SK_TCP_SACK) | |
1430 | tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK; | |
1431 | if (csk->tcp_flags & SK_TCP_SEG_SCALING) | |
1432 | tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING; | |
1433 | ||
1434 | l4kwqe1->tcp_flags = tcp_flags; | |
1435 | ||
1436 | return dev->submit_kwqes(dev, wqes, num_wqes); | |
1437 | } | |
1438 | ||
1439 | static int cnic_cm_close_req(struct cnic_sock *csk) | |
1440 | { | |
1441 | struct cnic_dev *dev = csk->dev; | |
1442 | struct l4_kwq_close_req *l4kwqe; | |
1443 | struct kwqe *wqes[1]; | |
1444 | ||
1445 | l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2; | |
1446 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1447 | wqes[0] = (struct kwqe *) l4kwqe; | |
1448 | ||
1449 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE; | |
1450 | l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT; | |
1451 | l4kwqe->cid = csk->cid; | |
1452 | ||
1453 | return dev->submit_kwqes(dev, wqes, 1); | |
1454 | } | |
1455 | ||
1456 | static int cnic_cm_abort_req(struct cnic_sock *csk) | |
1457 | { | |
1458 | struct cnic_dev *dev = csk->dev; | |
1459 | struct l4_kwq_reset_req *l4kwqe; | |
1460 | struct kwqe *wqes[1]; | |
1461 | ||
1462 | l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2; | |
1463 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1464 | wqes[0] = (struct kwqe *) l4kwqe; | |
1465 | ||
1466 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET; | |
1467 | l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT; | |
1468 | l4kwqe->cid = csk->cid; | |
1469 | ||
1470 | return dev->submit_kwqes(dev, wqes, 1); | |
1471 | } | |
1472 | ||
1473 | static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid, | |
1474 | u32 l5_cid, struct cnic_sock **csk, void *context) | |
1475 | { | |
1476 | struct cnic_local *cp = dev->cnic_priv; | |
1477 | struct cnic_sock *csk1; | |
1478 | ||
1479 | if (l5_cid >= MAX_CM_SK_TBL_SZ) | |
1480 | return -EINVAL; | |
1481 | ||
1482 | csk1 = &cp->csk_tbl[l5_cid]; | |
1483 | if (atomic_read(&csk1->ref_count)) | |
1484 | return -EAGAIN; | |
1485 | ||
1486 | if (test_and_set_bit(SK_F_INUSE, &csk1->flags)) | |
1487 | return -EBUSY; | |
1488 | ||
1489 | csk1->dev = dev; | |
1490 | csk1->cid = cid; | |
1491 | csk1->l5_cid = l5_cid; | |
1492 | csk1->ulp_type = ulp_type; | |
1493 | csk1->context = context; | |
1494 | ||
1495 | csk1->ka_timeout = DEF_KA_TIMEOUT; | |
1496 | csk1->ka_interval = DEF_KA_INTERVAL; | |
1497 | csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT; | |
1498 | csk1->tos = DEF_TOS; | |
1499 | csk1->ttl = DEF_TTL; | |
1500 | csk1->snd_seq_scale = DEF_SND_SEQ_SCALE; | |
1501 | csk1->rcv_buf = DEF_RCV_BUF; | |
1502 | csk1->snd_buf = DEF_SND_BUF; | |
1503 | csk1->seed = DEF_SEED; | |
1504 | ||
1505 | *csk = csk1; | |
1506 | return 0; | |
1507 | } | |
1508 | ||
1509 | static void cnic_cm_cleanup(struct cnic_sock *csk) | |
1510 | { | |
1511 | if (csk->src_port) { | |
1512 | struct cnic_dev *dev = csk->dev; | |
1513 | struct cnic_local *cp = dev->cnic_priv; | |
1514 | ||
1515 | cnic_free_id(&cp->csk_port_tbl, csk->src_port); | |
1516 | csk->src_port = 0; | |
1517 | } | |
1518 | } | |
1519 | ||
1520 | static void cnic_close_conn(struct cnic_sock *csk) | |
1521 | { | |
1522 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) { | |
1523 | cnic_cm_upload_pg(csk); | |
1524 | clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); | |
1525 | } | |
1526 | cnic_cm_cleanup(csk); | |
1527 | } | |
1528 | ||
1529 | static int cnic_cm_destroy(struct cnic_sock *csk) | |
1530 | { | |
1531 | if (!cnic_in_use(csk)) | |
1532 | return -EINVAL; | |
1533 | ||
1534 | csk_hold(csk); | |
1535 | clear_bit(SK_F_INUSE, &csk->flags); | |
1536 | smp_mb__after_clear_bit(); | |
1537 | while (atomic_read(&csk->ref_count) != 1) | |
1538 | msleep(1); | |
1539 | cnic_cm_cleanup(csk); | |
1540 | ||
1541 | csk->flags = 0; | |
1542 | csk_put(csk); | |
1543 | return 0; | |
1544 | } | |
1545 | ||
1546 | static inline u16 cnic_get_vlan(struct net_device *dev, | |
1547 | struct net_device **vlan_dev) | |
1548 | { | |
1549 | if (dev->priv_flags & IFF_802_1Q_VLAN) { | |
1550 | *vlan_dev = vlan_dev_real_dev(dev); | |
1551 | return vlan_dev_vlan_id(dev); | |
1552 | } | |
1553 | *vlan_dev = dev; | |
1554 | return 0; | |
1555 | } | |
1556 | ||
1557 | static int cnic_get_v4_route(struct sockaddr_in *dst_addr, | |
1558 | struct dst_entry **dst) | |
1559 | { | |
faea56c9 | 1560 | #if defined(CONFIG_INET) |
a4636960 MC |
1561 | struct flowi fl; |
1562 | int err; | |
1563 | struct rtable *rt; | |
1564 | ||
1565 | memset(&fl, 0, sizeof(fl)); | |
1566 | fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr; | |
1567 | ||
1568 | err = ip_route_output_key(&init_net, &rt, &fl); | |
1569 | if (!err) | |
1570 | *dst = &rt->u.dst; | |
1571 | return err; | |
faea56c9 RD |
1572 | #else |
1573 | return -ENETUNREACH; | |
1574 | #endif | |
a4636960 MC |
1575 | } |
1576 | ||
1577 | static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr, | |
1578 | struct dst_entry **dst) | |
1579 | { | |
faea56c9 | 1580 | #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE)) |
a4636960 MC |
1581 | struct flowi fl; |
1582 | ||
1583 | memset(&fl, 0, sizeof(fl)); | |
1584 | ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr); | |
1585 | if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL) | |
1586 | fl.oif = dst_addr->sin6_scope_id; | |
1587 | ||
1588 | *dst = ip6_route_output(&init_net, NULL, &fl); | |
1589 | if (*dst) | |
1590 | return 0; | |
1591 | #endif | |
1592 | ||
1593 | return -ENETUNREACH; | |
1594 | } | |
1595 | ||
1596 | static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr, | |
1597 | int ulp_type) | |
1598 | { | |
1599 | struct cnic_dev *dev = NULL; | |
1600 | struct dst_entry *dst; | |
1601 | struct net_device *netdev = NULL; | |
1602 | int err = -ENETUNREACH; | |
1603 | ||
1604 | if (dst_addr->sin_family == AF_INET) | |
1605 | err = cnic_get_v4_route(dst_addr, &dst); | |
1606 | else if (dst_addr->sin_family == AF_INET6) { | |
1607 | struct sockaddr_in6 *dst_addr6 = | |
1608 | (struct sockaddr_in6 *) dst_addr; | |
1609 | ||
1610 | err = cnic_get_v6_route(dst_addr6, &dst); | |
1611 | } else | |
1612 | return NULL; | |
1613 | ||
1614 | if (err) | |
1615 | return NULL; | |
1616 | ||
1617 | if (!dst->dev) | |
1618 | goto done; | |
1619 | ||
1620 | cnic_get_vlan(dst->dev, &netdev); | |
1621 | ||
1622 | dev = cnic_from_netdev(netdev); | |
1623 | ||
1624 | done: | |
1625 | dst_release(dst); | |
1626 | if (dev) | |
1627 | cnic_put(dev); | |
1628 | return dev; | |
1629 | } | |
1630 | ||
1631 | static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr) | |
1632 | { | |
1633 | struct cnic_dev *dev = csk->dev; | |
1634 | struct cnic_local *cp = dev->cnic_priv; | |
1635 | ||
1636 | return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk); | |
1637 | } | |
1638 | ||
1639 | static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr) | |
1640 | { | |
1641 | struct cnic_dev *dev = csk->dev; | |
1642 | struct cnic_local *cp = dev->cnic_priv; | |
1643 | int is_v6, err, rc = -ENETUNREACH; | |
1644 | struct dst_entry *dst; | |
1645 | struct net_device *realdev; | |
1646 | u32 local_port; | |
1647 | ||
1648 | if (saddr->local.v6.sin6_family == AF_INET6 && | |
1649 | saddr->remote.v6.sin6_family == AF_INET6) | |
1650 | is_v6 = 1; | |
1651 | else if (saddr->local.v4.sin_family == AF_INET && | |
1652 | saddr->remote.v4.sin_family == AF_INET) | |
1653 | is_v6 = 0; | |
1654 | else | |
1655 | return -EINVAL; | |
1656 | ||
1657 | clear_bit(SK_F_IPV6, &csk->flags); | |
1658 | ||
1659 | if (is_v6) { | |
faea56c9 | 1660 | #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE)) |
a4636960 MC |
1661 | set_bit(SK_F_IPV6, &csk->flags); |
1662 | err = cnic_get_v6_route(&saddr->remote.v6, &dst); | |
1663 | if (err) | |
1664 | return err; | |
1665 | ||
1666 | if (!dst || dst->error || !dst->dev) | |
1667 | goto err_out; | |
1668 | ||
1669 | memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr, | |
1670 | sizeof(struct in6_addr)); | |
1671 | csk->dst_port = saddr->remote.v6.sin6_port; | |
1672 | local_port = saddr->local.v6.sin6_port; | |
1673 | #else | |
1674 | return rc; | |
1675 | #endif | |
1676 | ||
1677 | } else { | |
1678 | err = cnic_get_v4_route(&saddr->remote.v4, &dst); | |
1679 | if (err) | |
1680 | return err; | |
1681 | ||
1682 | if (!dst || dst->error || !dst->dev) | |
1683 | goto err_out; | |
1684 | ||
1685 | csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr; | |
1686 | csk->dst_port = saddr->remote.v4.sin_port; | |
1687 | local_port = saddr->local.v4.sin_port; | |
1688 | } | |
1689 | ||
1690 | csk->vlan_id = cnic_get_vlan(dst->dev, &realdev); | |
1691 | if (realdev != dev->netdev) | |
1692 | goto err_out; | |
1693 | ||
1694 | if (local_port >= CNIC_LOCAL_PORT_MIN && | |
1695 | local_port < CNIC_LOCAL_PORT_MAX) { | |
1696 | if (cnic_alloc_id(&cp->csk_port_tbl, local_port)) | |
1697 | local_port = 0; | |
1698 | } else | |
1699 | local_port = 0; | |
1700 | ||
1701 | if (!local_port) { | |
1702 | local_port = cnic_alloc_new_id(&cp->csk_port_tbl); | |
1703 | if (local_port == -1) { | |
1704 | rc = -ENOMEM; | |
1705 | goto err_out; | |
1706 | } | |
1707 | } | |
1708 | csk->src_port = local_port; | |
1709 | ||
1710 | csk->mtu = dst_mtu(dst); | |
1711 | rc = 0; | |
1712 | ||
1713 | err_out: | |
1714 | dst_release(dst); | |
1715 | return rc; | |
1716 | } | |
1717 | ||
1718 | static void cnic_init_csk_state(struct cnic_sock *csk) | |
1719 | { | |
1720 | csk->state = 0; | |
1721 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); | |
1722 | clear_bit(SK_F_CLOSING, &csk->flags); | |
1723 | } | |
1724 | ||
1725 | static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr) | |
1726 | { | |
1727 | int err = 0; | |
1728 | ||
1729 | if (!cnic_in_use(csk)) | |
1730 | return -EINVAL; | |
1731 | ||
1732 | if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags)) | |
1733 | return -EINVAL; | |
1734 | ||
1735 | cnic_init_csk_state(csk); | |
1736 | ||
1737 | err = cnic_get_route(csk, saddr); | |
1738 | if (err) | |
1739 | goto err_out; | |
1740 | ||
1741 | err = cnic_resolve_addr(csk, saddr); | |
1742 | if (!err) | |
1743 | return 0; | |
1744 | ||
1745 | err_out: | |
1746 | clear_bit(SK_F_CONNECT_START, &csk->flags); | |
1747 | return err; | |
1748 | } | |
1749 | ||
1750 | static int cnic_cm_abort(struct cnic_sock *csk) | |
1751 | { | |
1752 | struct cnic_local *cp = csk->dev->cnic_priv; | |
1753 | u32 opcode; | |
1754 | ||
1755 | if (!cnic_in_use(csk)) | |
1756 | return -EINVAL; | |
1757 | ||
1758 | if (cnic_abort_prep(csk)) | |
1759 | return cnic_cm_abort_req(csk); | |
1760 | ||
1761 | /* Getting here means that we haven't started connect, or | |
1762 | * connect was not successful. | |
1763 | */ | |
1764 | ||
1765 | csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; | |
1766 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) | |
1767 | opcode = csk->state; | |
1768 | else | |
1769 | opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD; | |
1770 | cp->close_conn(csk, opcode); | |
1771 | ||
1772 | return 0; | |
1773 | } | |
1774 | ||
1775 | static int cnic_cm_close(struct cnic_sock *csk) | |
1776 | { | |
1777 | if (!cnic_in_use(csk)) | |
1778 | return -EINVAL; | |
1779 | ||
1780 | if (cnic_close_prep(csk)) { | |
1781 | csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP; | |
1782 | return cnic_cm_close_req(csk); | |
1783 | } | |
1784 | return 0; | |
1785 | } | |
1786 | ||
1787 | static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk, | |
1788 | u8 opcode) | |
1789 | { | |
1790 | struct cnic_ulp_ops *ulp_ops; | |
1791 | int ulp_type = csk->ulp_type; | |
1792 | ||
1793 | rcu_read_lock(); | |
1794 | ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); | |
1795 | if (ulp_ops) { | |
1796 | if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE) | |
1797 | ulp_ops->cm_connect_complete(csk); | |
1798 | else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) | |
1799 | ulp_ops->cm_close_complete(csk); | |
1800 | else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) | |
1801 | ulp_ops->cm_remote_abort(csk); | |
1802 | else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP) | |
1803 | ulp_ops->cm_abort_complete(csk); | |
1804 | else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED) | |
1805 | ulp_ops->cm_remote_close(csk); | |
1806 | } | |
1807 | rcu_read_unlock(); | |
1808 | } | |
1809 | ||
1810 | static int cnic_cm_set_pg(struct cnic_sock *csk) | |
1811 | { | |
1812 | if (cnic_offld_prep(csk)) { | |
1813 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) | |
1814 | cnic_cm_update_pg(csk); | |
1815 | else | |
1816 | cnic_cm_offload_pg(csk); | |
1817 | } | |
1818 | return 0; | |
1819 | } | |
1820 | ||
1821 | static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe) | |
1822 | { | |
1823 | struct cnic_local *cp = dev->cnic_priv; | |
1824 | u32 l5_cid = kcqe->pg_host_opaque; | |
1825 | u8 opcode = kcqe->op_code; | |
1826 | struct cnic_sock *csk = &cp->csk_tbl[l5_cid]; | |
1827 | ||
1828 | csk_hold(csk); | |
1829 | if (!cnic_in_use(csk)) | |
1830 | goto done; | |
1831 | ||
1832 | if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { | |
1833 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); | |
1834 | goto done; | |
1835 | } | |
1836 | csk->pg_cid = kcqe->pg_cid; | |
1837 | set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); | |
1838 | cnic_cm_conn_req(csk); | |
1839 | ||
1840 | done: | |
1841 | csk_put(csk); | |
1842 | } | |
1843 | ||
1844 | static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe) | |
1845 | { | |
1846 | struct cnic_local *cp = dev->cnic_priv; | |
1847 | struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe; | |
1848 | u8 opcode = l4kcqe->op_code; | |
1849 | u32 l5_cid; | |
1850 | struct cnic_sock *csk; | |
1851 | ||
1852 | if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG || | |
1853 | opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { | |
1854 | cnic_cm_process_offld_pg(dev, l4kcqe); | |
1855 | return; | |
1856 | } | |
1857 | ||
1858 | l5_cid = l4kcqe->conn_id; | |
1859 | if (opcode & 0x80) | |
1860 | l5_cid = l4kcqe->cid; | |
1861 | if (l5_cid >= MAX_CM_SK_TBL_SZ) | |
1862 | return; | |
1863 | ||
1864 | csk = &cp->csk_tbl[l5_cid]; | |
1865 | csk_hold(csk); | |
1866 | ||
1867 | if (!cnic_in_use(csk)) { | |
1868 | csk_put(csk); | |
1869 | return; | |
1870 | } | |
1871 | ||
1872 | switch (opcode) { | |
1873 | case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE: | |
1874 | if (l4kcqe->status == 0) | |
1875 | set_bit(SK_F_OFFLD_COMPLETE, &csk->flags); | |
1876 | ||
1877 | smp_mb__before_clear_bit(); | |
1878 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); | |
1879 | cnic_cm_upcall(cp, csk, opcode); | |
1880 | break; | |
1881 | ||
1882 | case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED: | |
1883 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) | |
1884 | csk->state = opcode; | |
1885 | /* fall through */ | |
1886 | case L4_KCQE_OPCODE_VALUE_CLOSE_COMP: | |
1887 | case L4_KCQE_OPCODE_VALUE_RESET_COMP: | |
1888 | cp->close_conn(csk, opcode); | |
1889 | break; | |
1890 | ||
1891 | case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED: | |
1892 | cnic_cm_upcall(cp, csk, opcode); | |
1893 | break; | |
1894 | } | |
1895 | csk_put(csk); | |
1896 | } | |
1897 | ||
1898 | static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num) | |
1899 | { | |
1900 | struct cnic_dev *dev = data; | |
1901 | int i; | |
1902 | ||
1903 | for (i = 0; i < num; i++) | |
1904 | cnic_cm_process_kcqe(dev, kcqe[i]); | |
1905 | } | |
1906 | ||
1907 | static struct cnic_ulp_ops cm_ulp_ops = { | |
1908 | .indicate_kcqes = cnic_cm_indicate_kcqe, | |
1909 | }; | |
1910 | ||
1911 | static void cnic_cm_free_mem(struct cnic_dev *dev) | |
1912 | { | |
1913 | struct cnic_local *cp = dev->cnic_priv; | |
1914 | ||
1915 | kfree(cp->csk_tbl); | |
1916 | cp->csk_tbl = NULL; | |
1917 | cnic_free_id_tbl(&cp->csk_port_tbl); | |
1918 | } | |
1919 | ||
1920 | static int cnic_cm_alloc_mem(struct cnic_dev *dev) | |
1921 | { | |
1922 | struct cnic_local *cp = dev->cnic_priv; | |
1923 | ||
1924 | cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ, | |
1925 | GFP_KERNEL); | |
1926 | if (!cp->csk_tbl) | |
1927 | return -ENOMEM; | |
1928 | ||
1929 | if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE, | |
1930 | CNIC_LOCAL_PORT_MIN)) { | |
1931 | cnic_cm_free_mem(dev); | |
1932 | return -ENOMEM; | |
1933 | } | |
1934 | return 0; | |
1935 | } | |
1936 | ||
1937 | static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode) | |
1938 | { | |
1939 | if ((opcode == csk->state) || | |
1940 | (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED && | |
1941 | csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) { | |
1942 | if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) | |
1943 | return 1; | |
1944 | } | |
1945 | return 0; | |
1946 | } | |
1947 | ||
1948 | static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode) | |
1949 | { | |
1950 | struct cnic_dev *dev = csk->dev; | |
1951 | struct cnic_local *cp = dev->cnic_priv; | |
1952 | ||
1953 | clear_bit(SK_F_CONNECT_START, &csk->flags); | |
1954 | if (cnic_ready_to_close(csk, opcode)) { | |
1955 | cnic_close_conn(csk); | |
1956 | cnic_cm_upcall(cp, csk, opcode); | |
1957 | } | |
1958 | } | |
1959 | ||
1960 | static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev) | |
1961 | { | |
1962 | } | |
1963 | ||
1964 | static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev) | |
1965 | { | |
1966 | u32 seed; | |
1967 | ||
1968 | get_random_bytes(&seed, 4); | |
1969 | cnic_ctx_wr(dev, 45, 0, seed); | |
1970 | return 0; | |
1971 | } | |
1972 | ||
1973 | static int cnic_cm_open(struct cnic_dev *dev) | |
1974 | { | |
1975 | struct cnic_local *cp = dev->cnic_priv; | |
1976 | int err; | |
1977 | ||
1978 | err = cnic_cm_alloc_mem(dev); | |
1979 | if (err) | |
1980 | return err; | |
1981 | ||
1982 | err = cp->start_cm(dev); | |
1983 | ||
1984 | if (err) | |
1985 | goto err_out; | |
1986 | ||
1987 | dev->cm_create = cnic_cm_create; | |
1988 | dev->cm_destroy = cnic_cm_destroy; | |
1989 | dev->cm_connect = cnic_cm_connect; | |
1990 | dev->cm_abort = cnic_cm_abort; | |
1991 | dev->cm_close = cnic_cm_close; | |
1992 | dev->cm_select_dev = cnic_cm_select_dev; | |
1993 | ||
1994 | cp->ulp_handle[CNIC_ULP_L4] = dev; | |
1995 | rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops); | |
1996 | return 0; | |
1997 | ||
1998 | err_out: | |
1999 | cnic_cm_free_mem(dev); | |
2000 | return err; | |
2001 | } | |
2002 | ||
2003 | static int cnic_cm_shutdown(struct cnic_dev *dev) | |
2004 | { | |
2005 | struct cnic_local *cp = dev->cnic_priv; | |
2006 | int i; | |
2007 | ||
2008 | cp->stop_cm(dev); | |
2009 | ||
2010 | if (!cp->csk_tbl) | |
2011 | return 0; | |
2012 | ||
2013 | for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) { | |
2014 | struct cnic_sock *csk = &cp->csk_tbl[i]; | |
2015 | ||
2016 | clear_bit(SK_F_INUSE, &csk->flags); | |
2017 | cnic_cm_cleanup(csk); | |
2018 | } | |
2019 | cnic_cm_free_mem(dev); | |
2020 | ||
2021 | return 0; | |
2022 | } | |
2023 | ||
2024 | static void cnic_init_context(struct cnic_dev *dev, u32 cid) | |
2025 | { | |
2026 | struct cnic_local *cp = dev->cnic_priv; | |
2027 | u32 cid_addr; | |
2028 | int i; | |
2029 | ||
2030 | if (CHIP_NUM(cp) == CHIP_NUM_5709) | |
2031 | return; | |
2032 | ||
2033 | cid_addr = GET_CID_ADDR(cid); | |
2034 | ||
2035 | for (i = 0; i < CTX_SIZE; i += 4) | |
2036 | cnic_ctx_wr(dev, cid_addr, i, 0); | |
2037 | } | |
2038 | ||
2039 | static int cnic_setup_5709_context(struct cnic_dev *dev, int valid) | |
2040 | { | |
2041 | struct cnic_local *cp = dev->cnic_priv; | |
2042 | int ret = 0, i; | |
2043 | u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0; | |
2044 | ||
2045 | if (CHIP_NUM(cp) != CHIP_NUM_5709) | |
2046 | return 0; | |
2047 | ||
2048 | for (i = 0; i < cp->ctx_blks; i++) { | |
2049 | int j; | |
2050 | u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk; | |
2051 | u32 val; | |
2052 | ||
2053 | memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE); | |
2054 | ||
2055 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0, | |
2056 | (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit); | |
2057 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1, | |
2058 | (u64) cp->ctx_arr[i].mapping >> 32); | |
2059 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx | | |
2060 | BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ); | |
2061 | for (j = 0; j < 10; j++) { | |
2062 | ||
2063 | val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL); | |
2064 | if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ)) | |
2065 | break; | |
2066 | udelay(5); | |
2067 | } | |
2068 | if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) { | |
2069 | ret = -EBUSY; | |
2070 | break; | |
2071 | } | |
2072 | } | |
2073 | return ret; | |
2074 | } | |
2075 | ||
2076 | static void cnic_free_irq(struct cnic_dev *dev) | |
2077 | { | |
2078 | struct cnic_local *cp = dev->cnic_priv; | |
2079 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2080 | ||
2081 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2082 | cp->disable_int_sync(dev); | |
2083 | tasklet_disable(&cp->cnic_irq_task); | |
2084 | free_irq(ethdev->irq_arr[0].vector, dev); | |
2085 | } | |
2086 | } | |
2087 | ||
2088 | static int cnic_init_bnx2_irq(struct cnic_dev *dev) | |
2089 | { | |
2090 | struct cnic_local *cp = dev->cnic_priv; | |
2091 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2092 | ||
2093 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2094 | int err, i = 0; | |
2095 | int sblk_num = cp->status_blk_num; | |
2096 | u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) + | |
2097 | BNX2_HC_SB_CONFIG_1; | |
2098 | ||
2099 | CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT); | |
2100 | ||
2101 | CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8); | |
2102 | CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220); | |
2103 | CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220); | |
2104 | ||
2105 | cp->bnx2_status_blk = cp->status_blk; | |
2106 | cp->last_status_idx = cp->bnx2_status_blk->status_idx; | |
2107 | tasklet_init(&cp->cnic_irq_task, &cnic_service_bnx2_msix, | |
2108 | (unsigned long) dev); | |
2109 | err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, | |
2110 | "cnic", dev); | |
2111 | if (err) { | |
2112 | tasklet_disable(&cp->cnic_irq_task); | |
2113 | return err; | |
2114 | } | |
2115 | while (cp->bnx2_status_blk->status_completion_producer_index && | |
2116 | i < 10) { | |
2117 | CNIC_WR(dev, BNX2_HC_COALESCE_NOW, | |
2118 | 1 << (11 + sblk_num)); | |
2119 | udelay(10); | |
2120 | i++; | |
2121 | barrier(); | |
2122 | } | |
2123 | if (cp->bnx2_status_blk->status_completion_producer_index) { | |
2124 | cnic_free_irq(dev); | |
2125 | goto failed; | |
2126 | } | |
2127 | ||
2128 | } else { | |
2129 | struct status_block *sblk = cp->status_blk; | |
2130 | u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND); | |
2131 | int i = 0; | |
2132 | ||
2133 | while (sblk->status_completion_producer_index && i < 10) { | |
2134 | CNIC_WR(dev, BNX2_HC_COMMAND, | |
2135 | hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT); | |
2136 | udelay(10); | |
2137 | i++; | |
2138 | barrier(); | |
2139 | } | |
2140 | if (sblk->status_completion_producer_index) | |
2141 | goto failed; | |
2142 | ||
2143 | } | |
2144 | return 0; | |
2145 | ||
2146 | failed: | |
2147 | printk(KERN_ERR PFX "%s: " "KCQ index not resetting to 0.\n", | |
2148 | dev->netdev->name); | |
2149 | return -EBUSY; | |
2150 | } | |
2151 | ||
2152 | static void cnic_enable_bnx2_int(struct cnic_dev *dev) | |
2153 | { | |
2154 | struct cnic_local *cp = dev->cnic_priv; | |
2155 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2156 | ||
2157 | if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) | |
2158 | return; | |
2159 | ||
2160 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | | |
2161 | BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); | |
2162 | } | |
2163 | ||
2164 | static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev) | |
2165 | { | |
2166 | struct cnic_local *cp = dev->cnic_priv; | |
2167 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2168 | ||
2169 | if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) | |
2170 | return; | |
2171 | ||
2172 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | | |
2173 | BNX2_PCICFG_INT_ACK_CMD_MASK_INT); | |
2174 | CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD); | |
2175 | synchronize_irq(ethdev->irq_arr[0].vector); | |
2176 | } | |
2177 | ||
2178 | static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev) | |
2179 | { | |
2180 | struct cnic_local *cp = dev->cnic_priv; | |
2181 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2182 | u32 cid_addr, tx_cid, sb_id; | |
2183 | u32 val, offset0, offset1, offset2, offset3; | |
2184 | int i; | |
2185 | struct tx_bd *txbd; | |
2186 | dma_addr_t buf_map; | |
2187 | struct status_block *s_blk = cp->status_blk; | |
2188 | ||
2189 | sb_id = cp->status_blk_num; | |
2190 | tx_cid = 20; | |
2191 | cnic_init_context(dev, tx_cid); | |
2192 | cnic_init_context(dev, tx_cid + 1); | |
2193 | cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2; | |
2194 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2195 | struct status_block_msix *sblk = cp->status_blk; | |
2196 | ||
2197 | tx_cid = TX_TSS_CID + sb_id - 1; | |
2198 | cnic_init_context(dev, tx_cid); | |
2199 | CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) | | |
2200 | (TX_TSS_CID << 7)); | |
2201 | cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index; | |
2202 | } | |
2203 | cp->tx_cons = *cp->tx_cons_ptr; | |
2204 | ||
2205 | cid_addr = GET_CID_ADDR(tx_cid); | |
2206 | if (CHIP_NUM(cp) == CHIP_NUM_5709) { | |
2207 | u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40; | |
2208 | ||
2209 | for (i = 0; i < PHY_CTX_SIZE; i += 4) | |
2210 | cnic_ctx_wr(dev, cid_addr2, i, 0); | |
2211 | ||
2212 | offset0 = BNX2_L2CTX_TYPE_XI; | |
2213 | offset1 = BNX2_L2CTX_CMD_TYPE_XI; | |
2214 | offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI; | |
2215 | offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI; | |
2216 | } else { | |
2217 | offset0 = BNX2_L2CTX_TYPE; | |
2218 | offset1 = BNX2_L2CTX_CMD_TYPE; | |
2219 | offset2 = BNX2_L2CTX_TBDR_BHADDR_HI; | |
2220 | offset3 = BNX2_L2CTX_TBDR_BHADDR_LO; | |
2221 | } | |
2222 | val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2; | |
2223 | cnic_ctx_wr(dev, cid_addr, offset0, val); | |
2224 | ||
2225 | val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16); | |
2226 | cnic_ctx_wr(dev, cid_addr, offset1, val); | |
2227 | ||
2228 | txbd = (struct tx_bd *) cp->l2_ring; | |
2229 | ||
2230 | buf_map = cp->l2_buf_map; | |
2231 | for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) { | |
2232 | txbd->tx_bd_haddr_hi = (u64) buf_map >> 32; | |
2233 | txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff; | |
2234 | } | |
2235 | val = (u64) cp->l2_ring_map >> 32; | |
2236 | cnic_ctx_wr(dev, cid_addr, offset2, val); | |
2237 | txbd->tx_bd_haddr_hi = val; | |
2238 | ||
2239 | val = (u64) cp->l2_ring_map & 0xffffffff; | |
2240 | cnic_ctx_wr(dev, cid_addr, offset3, val); | |
2241 | txbd->tx_bd_haddr_lo = val; | |
2242 | } | |
2243 | ||
2244 | static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev) | |
2245 | { | |
2246 | struct cnic_local *cp = dev->cnic_priv; | |
2247 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2248 | u32 cid_addr, sb_id, val, coal_reg, coal_val; | |
2249 | int i; | |
2250 | struct rx_bd *rxbd; | |
2251 | struct status_block *s_blk = cp->status_blk; | |
2252 | ||
2253 | sb_id = cp->status_blk_num; | |
2254 | cnic_init_context(dev, 2); | |
2255 | cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2; | |
2256 | coal_reg = BNX2_HC_COMMAND; | |
2257 | coal_val = CNIC_RD(dev, coal_reg); | |
2258 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2259 | struct status_block_msix *sblk = cp->status_blk; | |
2260 | ||
2261 | cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index; | |
2262 | coal_reg = BNX2_HC_COALESCE_NOW; | |
2263 | coal_val = 1 << (11 + sb_id); | |
2264 | } | |
2265 | i = 0; | |
2266 | while (!(*cp->rx_cons_ptr != 0) && i < 10) { | |
2267 | CNIC_WR(dev, coal_reg, coal_val); | |
2268 | udelay(10); | |
2269 | i++; | |
2270 | barrier(); | |
2271 | } | |
2272 | cp->rx_cons = *cp->rx_cons_ptr; | |
2273 | ||
2274 | cid_addr = GET_CID_ADDR(2); | |
2275 | val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE | | |
2276 | BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8); | |
2277 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val); | |
2278 | ||
2279 | if (sb_id == 0) | |
2280 | val = 2 << BNX2_L2CTX_STATUSB_NUM_SHIFT; | |
2281 | else | |
2282 | val = BNX2_L2CTX_STATUSB_NUM(sb_id); | |
2283 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val); | |
2284 | ||
2285 | rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE); | |
2286 | for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) { | |
2287 | dma_addr_t buf_map; | |
2288 | int n = (i % cp->l2_rx_ring_size) + 1; | |
2289 | ||
2290 | buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size); | |
2291 | rxbd->rx_bd_len = cp->l2_single_buf_size; | |
2292 | rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END; | |
2293 | rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32; | |
2294 | rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff; | |
2295 | } | |
2296 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32; | |
2297 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val); | |
2298 | rxbd->rx_bd_haddr_hi = val; | |
2299 | ||
2300 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff; | |
2301 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val); | |
2302 | rxbd->rx_bd_haddr_lo = val; | |
2303 | ||
2304 | val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD); | |
2305 | cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2)); | |
2306 | } | |
2307 | ||
2308 | static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev) | |
2309 | { | |
2310 | struct kwqe *wqes[1], l2kwqe; | |
2311 | ||
2312 | memset(&l2kwqe, 0, sizeof(l2kwqe)); | |
2313 | wqes[0] = &l2kwqe; | |
2314 | l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) | | |
2315 | (L2_KWQE_OPCODE_VALUE_FLUSH << | |
2316 | KWQE_OPCODE_SHIFT) | 2; | |
2317 | dev->submit_kwqes(dev, wqes, 1); | |
2318 | } | |
2319 | ||
2320 | static void cnic_set_bnx2_mac(struct cnic_dev *dev) | |
2321 | { | |
2322 | struct cnic_local *cp = dev->cnic_priv; | |
2323 | u32 val; | |
2324 | ||
2325 | val = cp->func << 2; | |
2326 | ||
2327 | cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val); | |
2328 | ||
2329 | val = cnic_reg_rd_ind(dev, cp->shmem_base + | |
2330 | BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER); | |
2331 | dev->mac_addr[0] = (u8) (val >> 8); | |
2332 | dev->mac_addr[1] = (u8) val; | |
2333 | ||
2334 | CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val); | |
2335 | ||
2336 | val = cnic_reg_rd_ind(dev, cp->shmem_base + | |
2337 | BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER); | |
2338 | dev->mac_addr[2] = (u8) (val >> 24); | |
2339 | dev->mac_addr[3] = (u8) (val >> 16); | |
2340 | dev->mac_addr[4] = (u8) (val >> 8); | |
2341 | dev->mac_addr[5] = (u8) val; | |
2342 | ||
2343 | CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val); | |
2344 | ||
2345 | val = 4 | BNX2_RPM_SORT_USER2_BC_EN; | |
2346 | if (CHIP_NUM(cp) != CHIP_NUM_5709) | |
2347 | val |= BNX2_RPM_SORT_USER2_PROM_VLAN; | |
2348 | ||
2349 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0); | |
2350 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, val); | |
2351 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA); | |
2352 | } | |
2353 | ||
2354 | static int cnic_start_bnx2_hw(struct cnic_dev *dev) | |
2355 | { | |
2356 | struct cnic_local *cp = dev->cnic_priv; | |
2357 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2358 | struct status_block *sblk = cp->status_blk; | |
2359 | u32 val; | |
2360 | int err; | |
2361 | ||
2362 | cnic_set_bnx2_mac(dev); | |
2363 | ||
2364 | val = CNIC_RD(dev, BNX2_MQ_CONFIG); | |
2365 | val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE; | |
2366 | if (BCM_PAGE_BITS > 12) | |
2367 | val |= (12 - 8) << 4; | |
2368 | else | |
2369 | val |= (BCM_PAGE_BITS - 8) << 4; | |
2370 | ||
2371 | CNIC_WR(dev, BNX2_MQ_CONFIG, val); | |
2372 | ||
2373 | CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8); | |
2374 | CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220); | |
2375 | CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220); | |
2376 | ||
2377 | err = cnic_setup_5709_context(dev, 1); | |
2378 | if (err) | |
2379 | return err; | |
2380 | ||
2381 | cnic_init_context(dev, KWQ_CID); | |
2382 | cnic_init_context(dev, KCQ_CID); | |
2383 | ||
2384 | cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID); | |
2385 | cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX; | |
2386 | ||
2387 | cp->max_kwq_idx = MAX_KWQ_IDX; | |
2388 | cp->kwq_prod_idx = 0; | |
2389 | cp->kwq_con_idx = 0; | |
2390 | cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT; | |
2391 | ||
2392 | if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708) | |
2393 | cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15; | |
2394 | else | |
2395 | cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index; | |
2396 | ||
2397 | /* Initialize the kernel work queue context. */ | |
2398 | val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | | |
2399 | (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; | |
2400 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val); | |
2401 | ||
2402 | val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16; | |
2403 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); | |
2404 | ||
2405 | val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT; | |
2406 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); | |
2407 | ||
2408 | val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32); | |
2409 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); | |
2410 | ||
2411 | val = (u32) cp->kwq_info.pgtbl_map; | |
2412 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); | |
2413 | ||
2414 | cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID); | |
2415 | cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX; | |
2416 | ||
2417 | cp->kcq_prod_idx = 0; | |
2418 | ||
2419 | /* Initialize the kernel complete queue context. */ | |
2420 | val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | | |
2421 | (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; | |
2422 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val); | |
2423 | ||
2424 | val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16; | |
2425 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); | |
2426 | ||
2427 | val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT; | |
2428 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); | |
2429 | ||
2430 | val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32); | |
2431 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); | |
2432 | ||
2433 | val = (u32) cp->kcq_info.pgtbl_map; | |
2434 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); | |
2435 | ||
2436 | cp->int_num = 0; | |
2437 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2438 | u32 sb_id = cp->status_blk_num; | |
2439 | u32 sb = BNX2_L2CTX_STATUSB_NUM(sb_id); | |
2440 | ||
2441 | cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT; | |
2442 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); | |
2443 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); | |
2444 | } | |
2445 | ||
2446 | /* Enable Commnad Scheduler notification when we write to the | |
2447 | * host producer index of the kernel contexts. */ | |
2448 | CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2); | |
2449 | ||
2450 | /* Enable Command Scheduler notification when we write to either | |
2451 | * the Send Queue or Receive Queue producer indexes of the kernel | |
2452 | * bypass contexts. */ | |
2453 | CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7); | |
2454 | CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7); | |
2455 | ||
2456 | /* Notify COM when the driver post an application buffer. */ | |
2457 | CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000); | |
2458 | ||
2459 | /* Set the CP and COM doorbells. These two processors polls the | |
2460 | * doorbell for a non zero value before running. This must be done | |
2461 | * after setting up the kernel queue contexts. */ | |
2462 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1); | |
2463 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1); | |
2464 | ||
2465 | cnic_init_bnx2_tx_ring(dev); | |
2466 | cnic_init_bnx2_rx_ring(dev); | |
2467 | ||
2468 | err = cnic_init_bnx2_irq(dev); | |
2469 | if (err) { | |
2470 | printk(KERN_ERR PFX "%s: cnic_init_irq failed\n", | |
2471 | dev->netdev->name); | |
2472 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); | |
2473 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); | |
2474 | return err; | |
2475 | } | |
2476 | ||
2477 | return 0; | |
2478 | } | |
2479 | ||
86b53606 MC |
2480 | static void cnic_init_rings(struct cnic_dev *dev) |
2481 | { | |
2482 | if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { | |
2483 | cnic_init_bnx2_tx_ring(dev); | |
2484 | cnic_init_bnx2_rx_ring(dev); | |
2485 | } | |
2486 | } | |
2487 | ||
2488 | static void cnic_shutdown_rings(struct cnic_dev *dev) | |
2489 | { | |
2490 | if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { | |
2491 | cnic_shutdown_bnx2_rx_ring(dev); | |
2492 | } | |
2493 | } | |
2494 | ||
a3059b12 | 2495 | static int cnic_register_netdev(struct cnic_dev *dev) |
a4636960 MC |
2496 | { |
2497 | struct cnic_local *cp = dev->cnic_priv; | |
2498 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2499 | int err; | |
2500 | ||
a3059b12 MC |
2501 | if (!ethdev) |
2502 | return -ENODEV; | |
2503 | ||
2504 | if (ethdev->drv_state & CNIC_DRV_STATE_REGD) | |
2505 | return 0; | |
a4636960 MC |
2506 | |
2507 | err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev); | |
a3059b12 | 2508 | if (err) |
a4636960 MC |
2509 | printk(KERN_ERR PFX "%s: register_cnic failed\n", |
2510 | dev->netdev->name); | |
a3059b12 MC |
2511 | |
2512 | return err; | |
2513 | } | |
2514 | ||
2515 | static void cnic_unregister_netdev(struct cnic_dev *dev) | |
2516 | { | |
2517 | struct cnic_local *cp = dev->cnic_priv; | |
2518 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2519 | ||
2520 | if (!ethdev) | |
2521 | return; | |
2522 | ||
2523 | ethdev->drv_unregister_cnic(dev->netdev); | |
2524 | } | |
2525 | ||
2526 | static int cnic_start_hw(struct cnic_dev *dev) | |
2527 | { | |
2528 | struct cnic_local *cp = dev->cnic_priv; | |
2529 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2530 | int err; | |
2531 | ||
2532 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) | |
2533 | return -EALREADY; | |
a4636960 MC |
2534 | |
2535 | dev->regview = ethdev->io_base; | |
2536 | cp->chip_id = ethdev->chip_id; | |
2537 | pci_dev_get(dev->pcidev); | |
2538 | cp->func = PCI_FUNC(dev->pcidev->devfn); | |
2539 | cp->status_blk = ethdev->irq_arr[0].status_blk; | |
2540 | cp->status_blk_num = ethdev->irq_arr[0].status_blk_num; | |
2541 | ||
2542 | err = cp->alloc_resc(dev); | |
2543 | if (err) { | |
2544 | printk(KERN_ERR PFX "%s: allocate resource failure\n", | |
2545 | dev->netdev->name); | |
2546 | goto err1; | |
2547 | } | |
2548 | ||
2549 | err = cp->start_hw(dev); | |
2550 | if (err) | |
2551 | goto err1; | |
2552 | ||
2553 | err = cnic_cm_open(dev); | |
2554 | if (err) | |
2555 | goto err1; | |
2556 | ||
2557 | set_bit(CNIC_F_CNIC_UP, &dev->flags); | |
2558 | ||
2559 | cp->enable_int(dev); | |
2560 | ||
2561 | return 0; | |
2562 | ||
2563 | err1: | |
a4636960 MC |
2564 | cp->free_resc(dev); |
2565 | pci_dev_put(dev->pcidev); | |
a4636960 MC |
2566 | return err; |
2567 | } | |
2568 | ||
2569 | static void cnic_stop_bnx2_hw(struct cnic_dev *dev) | |
2570 | { | |
a4636960 MC |
2571 | cnic_disable_bnx2_int_sync(dev); |
2572 | ||
2573 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); | |
2574 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); | |
2575 | ||
2576 | cnic_init_context(dev, KWQ_CID); | |
2577 | cnic_init_context(dev, KCQ_CID); | |
2578 | ||
2579 | cnic_setup_5709_context(dev, 0); | |
2580 | cnic_free_irq(dev); | |
2581 | ||
a4636960 MC |
2582 | cnic_free_resc(dev); |
2583 | } | |
2584 | ||
2585 | static void cnic_stop_hw(struct cnic_dev *dev) | |
2586 | { | |
2587 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { | |
2588 | struct cnic_local *cp = dev->cnic_priv; | |
2589 | ||
2590 | clear_bit(CNIC_F_CNIC_UP, &dev->flags); | |
2591 | rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL); | |
2592 | synchronize_rcu(); | |
2593 | cnic_cm_shutdown(dev); | |
2594 | cp->stop_hw(dev); | |
2595 | pci_dev_put(dev->pcidev); | |
2596 | } | |
2597 | } | |
2598 | ||
2599 | static void cnic_free_dev(struct cnic_dev *dev) | |
2600 | { | |
2601 | int i = 0; | |
2602 | ||
2603 | while ((atomic_read(&dev->ref_count) != 0) && i < 10) { | |
2604 | msleep(100); | |
2605 | i++; | |
2606 | } | |
2607 | if (atomic_read(&dev->ref_count) != 0) | |
2608 | printk(KERN_ERR PFX "%s: Failed waiting for ref count to go" | |
2609 | " to zero.\n", dev->netdev->name); | |
2610 | ||
2611 | printk(KERN_INFO PFX "Removed CNIC device: %s\n", dev->netdev->name); | |
2612 | dev_put(dev->netdev); | |
2613 | kfree(dev); | |
2614 | } | |
2615 | ||
2616 | static struct cnic_dev *cnic_alloc_dev(struct net_device *dev, | |
2617 | struct pci_dev *pdev) | |
2618 | { | |
2619 | struct cnic_dev *cdev; | |
2620 | struct cnic_local *cp; | |
2621 | int alloc_size; | |
2622 | ||
2623 | alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local); | |
2624 | ||
2625 | cdev = kzalloc(alloc_size , GFP_KERNEL); | |
2626 | if (cdev == NULL) { | |
2627 | printk(KERN_ERR PFX "%s: allocate dev struct failure\n", | |
2628 | dev->name); | |
2629 | return NULL; | |
2630 | } | |
2631 | ||
2632 | cdev->netdev = dev; | |
2633 | cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev); | |
2634 | cdev->register_device = cnic_register_device; | |
2635 | cdev->unregister_device = cnic_unregister_device; | |
2636 | cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv; | |
2637 | ||
2638 | cp = cdev->cnic_priv; | |
2639 | cp->dev = cdev; | |
2640 | cp->uio_dev = -1; | |
2641 | cp->l2_single_buf_size = 0x400; | |
2642 | cp->l2_rx_ring_size = 3; | |
2643 | ||
2644 | spin_lock_init(&cp->cnic_ulp_lock); | |
2645 | ||
2646 | printk(KERN_INFO PFX "Added CNIC device: %s\n", dev->name); | |
2647 | ||
2648 | return cdev; | |
2649 | } | |
2650 | ||
2651 | static struct cnic_dev *init_bnx2_cnic(struct net_device *dev) | |
2652 | { | |
2653 | struct pci_dev *pdev; | |
2654 | struct cnic_dev *cdev; | |
2655 | struct cnic_local *cp; | |
2656 | struct cnic_eth_dev *ethdev = NULL; | |
e2ee3616 | 2657 | struct cnic_eth_dev *(*probe)(struct net_device *) = NULL; |
a4636960 | 2658 | |
e2ee3616 | 2659 | probe = symbol_get(bnx2_cnic_probe); |
a4636960 MC |
2660 | if (probe) { |
2661 | ethdev = (*probe)(dev); | |
64c64608 | 2662 | symbol_put(bnx2_cnic_probe); |
a4636960 MC |
2663 | } |
2664 | if (!ethdev) | |
2665 | return NULL; | |
2666 | ||
2667 | pdev = ethdev->pdev; | |
2668 | if (!pdev) | |
2669 | return NULL; | |
2670 | ||
2671 | dev_hold(dev); | |
2672 | pci_dev_get(pdev); | |
2673 | if (pdev->device == PCI_DEVICE_ID_NX2_5709 || | |
2674 | pdev->device == PCI_DEVICE_ID_NX2_5709S) { | |
2675 | u8 rev; | |
2676 | ||
2677 | pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); | |
2678 | if (rev < 0x10) { | |
2679 | pci_dev_put(pdev); | |
2680 | goto cnic_err; | |
2681 | } | |
2682 | } | |
2683 | pci_dev_put(pdev); | |
2684 | ||
2685 | cdev = cnic_alloc_dev(dev, pdev); | |
2686 | if (cdev == NULL) | |
2687 | goto cnic_err; | |
2688 | ||
2689 | set_bit(CNIC_F_BNX2_CLASS, &cdev->flags); | |
2690 | cdev->submit_kwqes = cnic_submit_bnx2_kwqes; | |
2691 | ||
2692 | cp = cdev->cnic_priv; | |
2693 | cp->ethdev = ethdev; | |
2694 | cdev->pcidev = pdev; | |
2695 | ||
2696 | cp->cnic_ops = &cnic_bnx2_ops; | |
2697 | cp->start_hw = cnic_start_bnx2_hw; | |
2698 | cp->stop_hw = cnic_stop_bnx2_hw; | |
2699 | cp->setup_pgtbl = cnic_setup_page_tbl; | |
2700 | cp->alloc_resc = cnic_alloc_bnx2_resc; | |
2701 | cp->free_resc = cnic_free_resc; | |
2702 | cp->start_cm = cnic_cm_init_bnx2_hw; | |
2703 | cp->stop_cm = cnic_cm_stop_bnx2_hw; | |
2704 | cp->enable_int = cnic_enable_bnx2_int; | |
2705 | cp->disable_int_sync = cnic_disable_bnx2_int_sync; | |
2706 | cp->close_conn = cnic_close_bnx2_conn; | |
2707 | cp->next_idx = cnic_bnx2_next_idx; | |
2708 | cp->hw_idx = cnic_bnx2_hw_idx; | |
2709 | return cdev; | |
2710 | ||
2711 | cnic_err: | |
2712 | dev_put(dev); | |
2713 | return NULL; | |
2714 | } | |
2715 | ||
2716 | static struct cnic_dev *is_cnic_dev(struct net_device *dev) | |
2717 | { | |
2718 | struct ethtool_drvinfo drvinfo; | |
2719 | struct cnic_dev *cdev = NULL; | |
2720 | ||
2721 | if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) { | |
2722 | memset(&drvinfo, 0, sizeof(drvinfo)); | |
2723 | dev->ethtool_ops->get_drvinfo(dev, &drvinfo); | |
2724 | ||
2725 | if (!strcmp(drvinfo.driver, "bnx2")) | |
2726 | cdev = init_bnx2_cnic(dev); | |
2727 | if (cdev) { | |
2728 | write_lock(&cnic_dev_lock); | |
2729 | list_add(&cdev->list, &cnic_dev_list); | |
2730 | write_unlock(&cnic_dev_lock); | |
2731 | } | |
2732 | } | |
2733 | return cdev; | |
2734 | } | |
2735 | ||
2736 | /** | |
2737 | * netdev event handler | |
2738 | */ | |
2739 | static int cnic_netdev_event(struct notifier_block *this, unsigned long event, | |
2740 | void *ptr) | |
2741 | { | |
2742 | struct net_device *netdev = ptr; | |
2743 | struct cnic_dev *dev; | |
2744 | int if_type; | |
2745 | int new_dev = 0; | |
2746 | ||
2747 | dev = cnic_from_netdev(netdev); | |
2748 | ||
2749 | if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) { | |
2750 | /* Check for the hot-plug device */ | |
2751 | dev = is_cnic_dev(netdev); | |
2752 | if (dev) { | |
2753 | new_dev = 1; | |
2754 | cnic_hold(dev); | |
2755 | } | |
2756 | } | |
2757 | if (dev) { | |
2758 | struct cnic_local *cp = dev->cnic_priv; | |
2759 | ||
2760 | if (new_dev) | |
2761 | cnic_ulp_init(dev); | |
2762 | else if (event == NETDEV_UNREGISTER) | |
2763 | cnic_ulp_exit(dev); | |
6053bbf7 MC |
2764 | |
2765 | if (event == NETDEV_UP) { | |
a3059b12 MC |
2766 | if (cnic_register_netdev(dev) != 0) { |
2767 | cnic_put(dev); | |
2768 | goto done; | |
2769 | } | |
a4636960 MC |
2770 | if (!cnic_start_hw(dev)) |
2771 | cnic_ulp_start(dev); | |
a4636960 MC |
2772 | } |
2773 | ||
2774 | rcu_read_lock(); | |
2775 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { | |
2776 | struct cnic_ulp_ops *ulp_ops; | |
2777 | void *ctx; | |
2778 | ||
2779 | ulp_ops = rcu_dereference(cp->ulp_ops[if_type]); | |
2780 | if (!ulp_ops || !ulp_ops->indicate_netevent) | |
2781 | continue; | |
2782 | ||
2783 | ctx = cp->ulp_handle[if_type]; | |
2784 | ||
2785 | ulp_ops->indicate_netevent(ctx, event); | |
2786 | } | |
2787 | rcu_read_unlock(); | |
2788 | ||
2789 | if (event == NETDEV_GOING_DOWN) { | |
a4636960 MC |
2790 | cnic_ulp_stop(dev); |
2791 | cnic_stop_hw(dev); | |
a3059b12 | 2792 | cnic_unregister_netdev(dev); |
a4636960 MC |
2793 | } else if (event == NETDEV_UNREGISTER) { |
2794 | write_lock(&cnic_dev_lock); | |
2795 | list_del_init(&dev->list); | |
2796 | write_unlock(&cnic_dev_lock); | |
2797 | ||
2798 | cnic_put(dev); | |
2799 | cnic_free_dev(dev); | |
2800 | goto done; | |
2801 | } | |
2802 | cnic_put(dev); | |
2803 | } | |
2804 | done: | |
2805 | return NOTIFY_DONE; | |
2806 | } | |
2807 | ||
2808 | static struct notifier_block cnic_netdev_notifier = { | |
2809 | .notifier_call = cnic_netdev_event | |
2810 | }; | |
2811 | ||
2812 | static void cnic_release(void) | |
2813 | { | |
2814 | struct cnic_dev *dev; | |
2815 | ||
2816 | while (!list_empty(&cnic_dev_list)) { | |
2817 | dev = list_entry(cnic_dev_list.next, struct cnic_dev, list); | |
2818 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { | |
2819 | cnic_ulp_stop(dev); | |
2820 | cnic_stop_hw(dev); | |
2821 | } | |
2822 | ||
2823 | cnic_ulp_exit(dev); | |
a3059b12 | 2824 | cnic_unregister_netdev(dev); |
a4636960 MC |
2825 | list_del_init(&dev->list); |
2826 | cnic_free_dev(dev); | |
2827 | } | |
2828 | } | |
2829 | ||
2830 | static int __init cnic_init(void) | |
2831 | { | |
2832 | int rc = 0; | |
2833 | ||
2834 | printk(KERN_INFO "%s", version); | |
2835 | ||
2836 | rc = register_netdevice_notifier(&cnic_netdev_notifier); | |
2837 | if (rc) { | |
2838 | cnic_release(); | |
2839 | return rc; | |
2840 | } | |
2841 | ||
2842 | return 0; | |
2843 | } | |
2844 | ||
2845 | static void __exit cnic_exit(void) | |
2846 | { | |
2847 | unregister_netdevice_notifier(&cnic_netdev_notifier); | |
2848 | cnic_release(); | |
2849 | return; | |
2850 | } | |
2851 | ||
2852 | module_init(cnic_init); | |
2853 | module_exit(cnic_exit); |