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 | ||
70 | static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *); | |
71 | static void cnic_init_bnx2_tx_ring(struct cnic_dev *); | |
72 | static void cnic_init_bnx2_rx_ring(struct cnic_dev *); | |
73 | static int cnic_cm_set_pg(struct cnic_sock *); | |
74 | ||
75 | static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode) | |
76 | { | |
77 | struct cnic_dev *dev = uinfo->priv; | |
78 | struct cnic_local *cp = dev->cnic_priv; | |
79 | ||
80 | if (!capable(CAP_NET_ADMIN)) | |
81 | return -EPERM; | |
82 | ||
83 | if (cp->uio_dev != -1) | |
84 | return -EBUSY; | |
85 | ||
86 | cp->uio_dev = iminor(inode); | |
87 | ||
88 | cnic_shutdown_bnx2_rx_ring(dev); | |
89 | ||
90 | cnic_init_bnx2_tx_ring(dev); | |
91 | cnic_init_bnx2_rx_ring(dev); | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
96 | static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode) | |
97 | { | |
98 | struct cnic_dev *dev = uinfo->priv; | |
99 | struct cnic_local *cp = dev->cnic_priv; | |
100 | ||
101 | cp->uio_dev = -1; | |
102 | return 0; | |
103 | } | |
104 | ||
105 | static inline void cnic_hold(struct cnic_dev *dev) | |
106 | { | |
107 | atomic_inc(&dev->ref_count); | |
108 | } | |
109 | ||
110 | static inline void cnic_put(struct cnic_dev *dev) | |
111 | { | |
112 | atomic_dec(&dev->ref_count); | |
113 | } | |
114 | ||
115 | static inline void csk_hold(struct cnic_sock *csk) | |
116 | { | |
117 | atomic_inc(&csk->ref_count); | |
118 | } | |
119 | ||
120 | static inline void csk_put(struct cnic_sock *csk) | |
121 | { | |
122 | atomic_dec(&csk->ref_count); | |
123 | } | |
124 | ||
125 | static struct cnic_dev *cnic_from_netdev(struct net_device *netdev) | |
126 | { | |
127 | struct cnic_dev *cdev; | |
128 | ||
129 | read_lock(&cnic_dev_lock); | |
130 | list_for_each_entry(cdev, &cnic_dev_list, list) { | |
131 | if (netdev == cdev->netdev) { | |
132 | cnic_hold(cdev); | |
133 | read_unlock(&cnic_dev_lock); | |
134 | return cdev; | |
135 | } | |
136 | } | |
137 | read_unlock(&cnic_dev_lock); | |
138 | return NULL; | |
139 | } | |
140 | ||
7fc1ece4 MC |
141 | static inline void ulp_get(struct cnic_ulp_ops *ulp_ops) |
142 | { | |
143 | atomic_inc(&ulp_ops->ref_count); | |
144 | } | |
145 | ||
146 | static inline void ulp_put(struct cnic_ulp_ops *ulp_ops) | |
147 | { | |
148 | atomic_dec(&ulp_ops->ref_count); | |
149 | } | |
150 | ||
a4636960 MC |
151 | static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val) |
152 | { | |
153 | struct cnic_local *cp = dev->cnic_priv; | |
154 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
155 | struct drv_ctl_info info; | |
156 | struct drv_ctl_io *io = &info.data.io; | |
157 | ||
158 | info.cmd = DRV_CTL_CTX_WR_CMD; | |
159 | io->cid_addr = cid_addr; | |
160 | io->offset = off; | |
161 | io->data = val; | |
162 | ethdev->drv_ctl(dev->netdev, &info); | |
163 | } | |
164 | ||
165 | static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val) | |
166 | { | |
167 | struct cnic_local *cp = dev->cnic_priv; | |
168 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
169 | struct drv_ctl_info info; | |
170 | struct drv_ctl_io *io = &info.data.io; | |
171 | ||
172 | info.cmd = DRV_CTL_IO_WR_CMD; | |
173 | io->offset = off; | |
174 | io->data = val; | |
175 | ethdev->drv_ctl(dev->netdev, &info); | |
176 | } | |
177 | ||
178 | static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off) | |
179 | { | |
180 | struct cnic_local *cp = dev->cnic_priv; | |
181 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
182 | struct drv_ctl_info info; | |
183 | struct drv_ctl_io *io = &info.data.io; | |
184 | ||
185 | info.cmd = DRV_CTL_IO_RD_CMD; | |
186 | io->offset = off; | |
187 | ethdev->drv_ctl(dev->netdev, &info); | |
188 | return io->data; | |
189 | } | |
190 | ||
191 | static int cnic_in_use(struct cnic_sock *csk) | |
192 | { | |
193 | return test_bit(SK_F_INUSE, &csk->flags); | |
194 | } | |
195 | ||
196 | static void cnic_kwq_completion(struct cnic_dev *dev, u32 count) | |
197 | { | |
198 | struct cnic_local *cp = dev->cnic_priv; | |
199 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
200 | struct drv_ctl_info info; | |
201 | ||
202 | info.cmd = DRV_CTL_COMPLETION_CMD; | |
203 | info.data.comp.comp_count = count; | |
204 | ethdev->drv_ctl(dev->netdev, &info); | |
205 | } | |
206 | ||
207 | static int cnic_send_nlmsg(struct cnic_local *cp, u32 type, | |
208 | struct cnic_sock *csk) | |
209 | { | |
210 | struct iscsi_path path_req; | |
211 | char *buf = NULL; | |
212 | u16 len = 0; | |
213 | u32 msg_type = ISCSI_KEVENT_IF_DOWN; | |
214 | struct cnic_ulp_ops *ulp_ops; | |
215 | ||
216 | if (cp->uio_dev == -1) | |
217 | return -ENODEV; | |
218 | ||
219 | if (csk) { | |
220 | len = sizeof(path_req); | |
221 | buf = (char *) &path_req; | |
222 | memset(&path_req, 0, len); | |
223 | ||
224 | msg_type = ISCSI_KEVENT_PATH_REQ; | |
225 | path_req.handle = (u64) csk->l5_cid; | |
226 | if (test_bit(SK_F_IPV6, &csk->flags)) { | |
227 | memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0], | |
228 | sizeof(struct in6_addr)); | |
229 | path_req.ip_addr_len = 16; | |
230 | } else { | |
231 | memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0], | |
232 | sizeof(struct in_addr)); | |
233 | path_req.ip_addr_len = 4; | |
234 | } | |
235 | path_req.vlan_id = csk->vlan_id; | |
236 | path_req.pmtu = csk->mtu; | |
237 | } | |
238 | ||
239 | rcu_read_lock(); | |
6d7760a8 | 240 | ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]); |
a4636960 MC |
241 | if (ulp_ops) |
242 | ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len); | |
243 | rcu_read_unlock(); | |
244 | return 0; | |
245 | } | |
246 | ||
247 | static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type, | |
248 | char *buf, u16 len) | |
249 | { | |
250 | int rc = -EINVAL; | |
251 | ||
252 | switch (msg_type) { | |
253 | case ISCSI_UEVENT_PATH_UPDATE: { | |
254 | struct cnic_local *cp; | |
255 | u32 l5_cid; | |
256 | struct cnic_sock *csk; | |
257 | struct iscsi_path *path_resp; | |
258 | ||
259 | if (len < sizeof(*path_resp)) | |
260 | break; | |
261 | ||
262 | path_resp = (struct iscsi_path *) buf; | |
263 | cp = dev->cnic_priv; | |
264 | l5_cid = (u32) path_resp->handle; | |
265 | if (l5_cid >= MAX_CM_SK_TBL_SZ) | |
266 | break; | |
267 | ||
268 | csk = &cp->csk_tbl[l5_cid]; | |
269 | csk_hold(csk); | |
270 | if (cnic_in_use(csk)) { | |
271 | memcpy(csk->ha, path_resp->mac_addr, 6); | |
272 | if (test_bit(SK_F_IPV6, &csk->flags)) | |
273 | memcpy(&csk->src_ip[0], &path_resp->src.v6_addr, | |
274 | sizeof(struct in6_addr)); | |
275 | else | |
276 | memcpy(&csk->src_ip[0], &path_resp->src.v4_addr, | |
277 | sizeof(struct in_addr)); | |
278 | if (is_valid_ether_addr(csk->ha)) | |
279 | cnic_cm_set_pg(csk); | |
280 | } | |
281 | csk_put(csk); | |
282 | rc = 0; | |
283 | } | |
284 | } | |
285 | ||
286 | return rc; | |
287 | } | |
288 | ||
289 | static int cnic_offld_prep(struct cnic_sock *csk) | |
290 | { | |
291 | if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) | |
292 | return 0; | |
293 | ||
294 | if (!test_bit(SK_F_CONNECT_START, &csk->flags)) { | |
295 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); | |
296 | return 0; | |
297 | } | |
298 | ||
299 | return 1; | |
300 | } | |
301 | ||
302 | static int cnic_close_prep(struct cnic_sock *csk) | |
303 | { | |
304 | clear_bit(SK_F_CONNECT_START, &csk->flags); | |
305 | smp_mb__after_clear_bit(); | |
306 | ||
307 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { | |
308 | while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) | |
309 | msleep(1); | |
310 | ||
311 | return 1; | |
312 | } | |
313 | return 0; | |
314 | } | |
315 | ||
316 | static int cnic_abort_prep(struct cnic_sock *csk) | |
317 | { | |
318 | clear_bit(SK_F_CONNECT_START, &csk->flags); | |
319 | smp_mb__after_clear_bit(); | |
320 | ||
321 | while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) | |
322 | msleep(1); | |
323 | ||
324 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { | |
325 | csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; | |
326 | return 1; | |
327 | } | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
6d7760a8 MC |
332 | static void cnic_uio_stop(void) |
333 | { | |
334 | struct cnic_dev *dev; | |
335 | ||
336 | read_lock(&cnic_dev_lock); | |
337 | list_for_each_entry(dev, &cnic_dev_list, list) { | |
338 | struct cnic_local *cp = dev->cnic_priv; | |
339 | ||
340 | if (cp->cnic_uinfo) | |
341 | cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); | |
342 | } | |
343 | read_unlock(&cnic_dev_lock); | |
344 | } | |
345 | ||
a4636960 MC |
346 | int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops) |
347 | { | |
348 | struct cnic_dev *dev; | |
349 | ||
350 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { | |
351 | printk(KERN_ERR PFX "cnic_register_driver: Bad type %d\n", | |
352 | ulp_type); | |
353 | return -EINVAL; | |
354 | } | |
355 | mutex_lock(&cnic_lock); | |
356 | if (cnic_ulp_tbl[ulp_type]) { | |
357 | printk(KERN_ERR PFX "cnic_register_driver: Type %d has already " | |
358 | "been registered\n", ulp_type); | |
359 | mutex_unlock(&cnic_lock); | |
360 | return -EBUSY; | |
361 | } | |
362 | ||
363 | read_lock(&cnic_dev_lock); | |
364 | list_for_each_entry(dev, &cnic_dev_list, list) { | |
365 | struct cnic_local *cp = dev->cnic_priv; | |
366 | ||
367 | clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]); | |
368 | } | |
369 | read_unlock(&cnic_dev_lock); | |
370 | ||
7fc1ece4 | 371 | atomic_set(&ulp_ops->ref_count, 0); |
a4636960 MC |
372 | rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops); |
373 | mutex_unlock(&cnic_lock); | |
374 | ||
375 | /* Prevent race conditions with netdev_event */ | |
376 | rtnl_lock(); | |
377 | read_lock(&cnic_dev_lock); | |
378 | list_for_each_entry(dev, &cnic_dev_list, list) { | |
379 | struct cnic_local *cp = dev->cnic_priv; | |
380 | ||
381 | if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type])) | |
382 | ulp_ops->cnic_init(dev); | |
383 | } | |
384 | read_unlock(&cnic_dev_lock); | |
385 | rtnl_unlock(); | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
390 | int cnic_unregister_driver(int ulp_type) | |
391 | { | |
392 | struct cnic_dev *dev; | |
7fc1ece4 MC |
393 | struct cnic_ulp_ops *ulp_ops; |
394 | int i = 0; | |
a4636960 MC |
395 | |
396 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { | |
397 | printk(KERN_ERR PFX "cnic_unregister_driver: Bad type %d\n", | |
398 | ulp_type); | |
399 | return -EINVAL; | |
400 | } | |
401 | mutex_lock(&cnic_lock); | |
7fc1ece4 MC |
402 | ulp_ops = cnic_ulp_tbl[ulp_type]; |
403 | if (!ulp_ops) { | |
a4636960 MC |
404 | printk(KERN_ERR PFX "cnic_unregister_driver: Type %d has not " |
405 | "been registered\n", ulp_type); | |
406 | goto out_unlock; | |
407 | } | |
408 | read_lock(&cnic_dev_lock); | |
409 | list_for_each_entry(dev, &cnic_dev_list, list) { | |
410 | struct cnic_local *cp = dev->cnic_priv; | |
411 | ||
412 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { | |
413 | printk(KERN_ERR PFX "cnic_unregister_driver: Type %d " | |
414 | "still has devices registered\n", ulp_type); | |
415 | read_unlock(&cnic_dev_lock); | |
416 | goto out_unlock; | |
417 | } | |
418 | } | |
419 | read_unlock(&cnic_dev_lock); | |
420 | ||
6d7760a8 MC |
421 | if (ulp_type == CNIC_ULP_ISCSI) |
422 | cnic_uio_stop(); | |
423 | ||
a4636960 MC |
424 | rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL); |
425 | ||
426 | mutex_unlock(&cnic_lock); | |
427 | synchronize_rcu(); | |
7fc1ece4 MC |
428 | while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) { |
429 | msleep(100); | |
430 | i++; | |
431 | } | |
432 | ||
433 | if (atomic_read(&ulp_ops->ref_count) != 0) | |
434 | printk(KERN_WARNING PFX "%s: Failed waiting for ref count to go" | |
435 | " to zero.\n", dev->netdev->name); | |
a4636960 MC |
436 | return 0; |
437 | ||
438 | out_unlock: | |
439 | mutex_unlock(&cnic_lock); | |
440 | return -EINVAL; | |
441 | } | |
442 | ||
443 | static int cnic_start_hw(struct cnic_dev *); | |
444 | static void cnic_stop_hw(struct cnic_dev *); | |
445 | ||
446 | static int cnic_register_device(struct cnic_dev *dev, int ulp_type, | |
447 | void *ulp_ctx) | |
448 | { | |
449 | struct cnic_local *cp = dev->cnic_priv; | |
450 | struct cnic_ulp_ops *ulp_ops; | |
451 | ||
452 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { | |
453 | printk(KERN_ERR PFX "cnic_register_device: Bad type %d\n", | |
454 | ulp_type); | |
455 | return -EINVAL; | |
456 | } | |
457 | mutex_lock(&cnic_lock); | |
458 | if (cnic_ulp_tbl[ulp_type] == NULL) { | |
459 | printk(KERN_ERR PFX "cnic_register_device: Driver with type %d " | |
460 | "has not been registered\n", ulp_type); | |
461 | mutex_unlock(&cnic_lock); | |
462 | return -EAGAIN; | |
463 | } | |
464 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { | |
465 | printk(KERN_ERR PFX "cnic_register_device: Type %d has already " | |
466 | "been registered to this device\n", ulp_type); | |
467 | mutex_unlock(&cnic_lock); | |
468 | return -EBUSY; | |
469 | } | |
470 | ||
471 | clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]); | |
472 | cp->ulp_handle[ulp_type] = ulp_ctx; | |
473 | ulp_ops = cnic_ulp_tbl[ulp_type]; | |
474 | rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops); | |
475 | cnic_hold(dev); | |
476 | ||
477 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) | |
478 | if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type])) | |
479 | ulp_ops->cnic_start(cp->ulp_handle[ulp_type]); | |
480 | ||
481 | mutex_unlock(&cnic_lock); | |
482 | ||
483 | return 0; | |
484 | ||
485 | } | |
486 | EXPORT_SYMBOL(cnic_register_driver); | |
487 | ||
488 | static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type) | |
489 | { | |
490 | struct cnic_local *cp = dev->cnic_priv; | |
681dbd71 | 491 | int i = 0; |
a4636960 MC |
492 | |
493 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { | |
494 | printk(KERN_ERR PFX "cnic_unregister_device: Bad type %d\n", | |
495 | ulp_type); | |
496 | return -EINVAL; | |
497 | } | |
498 | mutex_lock(&cnic_lock); | |
499 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { | |
500 | rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL); | |
501 | cnic_put(dev); | |
502 | } else { | |
503 | printk(KERN_ERR PFX "cnic_unregister_device: device not " | |
504 | "registered to this ulp type %d\n", ulp_type); | |
505 | mutex_unlock(&cnic_lock); | |
506 | return -EINVAL; | |
507 | } | |
508 | mutex_unlock(&cnic_lock); | |
509 | ||
510 | synchronize_rcu(); | |
511 | ||
681dbd71 MC |
512 | while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) && |
513 | i < 20) { | |
514 | msleep(100); | |
515 | i++; | |
516 | } | |
517 | if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type])) | |
518 | printk(KERN_WARNING PFX "%s: Failed waiting for ULP up call" | |
519 | " to complete.\n", dev->netdev->name); | |
520 | ||
a4636960 MC |
521 | return 0; |
522 | } | |
523 | EXPORT_SYMBOL(cnic_unregister_driver); | |
524 | ||
525 | static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id) | |
526 | { | |
527 | id_tbl->start = start_id; | |
528 | id_tbl->max = size; | |
529 | id_tbl->next = 0; | |
530 | spin_lock_init(&id_tbl->lock); | |
531 | id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL); | |
532 | if (!id_tbl->table) | |
533 | return -ENOMEM; | |
534 | ||
535 | return 0; | |
536 | } | |
537 | ||
538 | static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl) | |
539 | { | |
540 | kfree(id_tbl->table); | |
541 | id_tbl->table = NULL; | |
542 | } | |
543 | ||
544 | static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id) | |
545 | { | |
546 | int ret = -1; | |
547 | ||
548 | id -= id_tbl->start; | |
549 | if (id >= id_tbl->max) | |
550 | return ret; | |
551 | ||
552 | spin_lock(&id_tbl->lock); | |
553 | if (!test_bit(id, id_tbl->table)) { | |
554 | set_bit(id, id_tbl->table); | |
555 | ret = 0; | |
556 | } | |
557 | spin_unlock(&id_tbl->lock); | |
558 | return ret; | |
559 | } | |
560 | ||
561 | /* Returns -1 if not successful */ | |
562 | static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl) | |
563 | { | |
564 | u32 id; | |
565 | ||
566 | spin_lock(&id_tbl->lock); | |
567 | id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); | |
568 | if (id >= id_tbl->max) { | |
569 | id = -1; | |
570 | if (id_tbl->next != 0) { | |
571 | id = find_first_zero_bit(id_tbl->table, id_tbl->next); | |
572 | if (id >= id_tbl->next) | |
573 | id = -1; | |
574 | } | |
575 | } | |
576 | ||
577 | if (id < id_tbl->max) { | |
578 | set_bit(id, id_tbl->table); | |
579 | id_tbl->next = (id + 1) & (id_tbl->max - 1); | |
580 | id += id_tbl->start; | |
581 | } | |
582 | ||
583 | spin_unlock(&id_tbl->lock); | |
584 | ||
585 | return id; | |
586 | } | |
587 | ||
588 | static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id) | |
589 | { | |
590 | if (id == -1) | |
591 | return; | |
592 | ||
593 | id -= id_tbl->start; | |
594 | if (id >= id_tbl->max) | |
595 | return; | |
596 | ||
597 | clear_bit(id, id_tbl->table); | |
598 | } | |
599 | ||
600 | static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma) | |
601 | { | |
602 | int i; | |
603 | ||
604 | if (!dma->pg_arr) | |
605 | return; | |
606 | ||
607 | for (i = 0; i < dma->num_pages; i++) { | |
608 | if (dma->pg_arr[i]) { | |
609 | pci_free_consistent(dev->pcidev, BCM_PAGE_SIZE, | |
610 | dma->pg_arr[i], dma->pg_map_arr[i]); | |
611 | dma->pg_arr[i] = NULL; | |
612 | } | |
613 | } | |
614 | if (dma->pgtbl) { | |
615 | pci_free_consistent(dev->pcidev, dma->pgtbl_size, | |
616 | dma->pgtbl, dma->pgtbl_map); | |
617 | dma->pgtbl = NULL; | |
618 | } | |
619 | kfree(dma->pg_arr); | |
620 | dma->pg_arr = NULL; | |
621 | dma->num_pages = 0; | |
622 | } | |
623 | ||
624 | static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma) | |
625 | { | |
626 | int i; | |
627 | u32 *page_table = dma->pgtbl; | |
628 | ||
629 | for (i = 0; i < dma->num_pages; i++) { | |
630 | /* Each entry needs to be in big endian format. */ | |
631 | *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32); | |
632 | page_table++; | |
633 | *page_table = (u32) dma->pg_map_arr[i]; | |
634 | page_table++; | |
635 | } | |
636 | } | |
637 | ||
638 | static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma, | |
639 | int pages, int use_pg_tbl) | |
640 | { | |
641 | int i, size; | |
642 | struct cnic_local *cp = dev->cnic_priv; | |
643 | ||
644 | size = pages * (sizeof(void *) + sizeof(dma_addr_t)); | |
645 | dma->pg_arr = kzalloc(size, GFP_ATOMIC); | |
646 | if (dma->pg_arr == NULL) | |
647 | return -ENOMEM; | |
648 | ||
649 | dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages); | |
650 | dma->num_pages = pages; | |
651 | ||
652 | for (i = 0; i < pages; i++) { | |
653 | dma->pg_arr[i] = pci_alloc_consistent(dev->pcidev, | |
654 | BCM_PAGE_SIZE, | |
655 | &dma->pg_map_arr[i]); | |
656 | if (dma->pg_arr[i] == NULL) | |
657 | goto error; | |
658 | } | |
659 | if (!use_pg_tbl) | |
660 | return 0; | |
661 | ||
662 | dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) & | |
663 | ~(BCM_PAGE_SIZE - 1); | |
664 | dma->pgtbl = pci_alloc_consistent(dev->pcidev, dma->pgtbl_size, | |
665 | &dma->pgtbl_map); | |
666 | if (dma->pgtbl == NULL) | |
667 | goto error; | |
668 | ||
669 | cp->setup_pgtbl(dev, dma); | |
670 | ||
671 | return 0; | |
672 | ||
673 | error: | |
674 | cnic_free_dma(dev, dma); | |
675 | return -ENOMEM; | |
676 | } | |
677 | ||
678 | static void cnic_free_resc(struct cnic_dev *dev) | |
679 | { | |
680 | struct cnic_local *cp = dev->cnic_priv; | |
681 | int i = 0; | |
682 | ||
683 | if (cp->cnic_uinfo) { | |
a4636960 MC |
684 | while (cp->uio_dev != -1 && i < 15) { |
685 | msleep(100); | |
686 | i++; | |
687 | } | |
688 | uio_unregister_device(cp->cnic_uinfo); | |
689 | kfree(cp->cnic_uinfo); | |
690 | cp->cnic_uinfo = NULL; | |
691 | } | |
692 | ||
693 | if (cp->l2_buf) { | |
694 | pci_free_consistent(dev->pcidev, cp->l2_buf_size, | |
695 | cp->l2_buf, cp->l2_buf_map); | |
696 | cp->l2_buf = NULL; | |
697 | } | |
698 | ||
699 | if (cp->l2_ring) { | |
700 | pci_free_consistent(dev->pcidev, cp->l2_ring_size, | |
701 | cp->l2_ring, cp->l2_ring_map); | |
702 | cp->l2_ring = NULL; | |
703 | } | |
704 | ||
705 | for (i = 0; i < cp->ctx_blks; i++) { | |
706 | if (cp->ctx_arr[i].ctx) { | |
707 | pci_free_consistent(dev->pcidev, cp->ctx_blk_size, | |
708 | cp->ctx_arr[i].ctx, | |
709 | cp->ctx_arr[i].mapping); | |
710 | cp->ctx_arr[i].ctx = NULL; | |
711 | } | |
712 | } | |
713 | kfree(cp->ctx_arr); | |
714 | cp->ctx_arr = NULL; | |
715 | cp->ctx_blks = 0; | |
716 | ||
717 | cnic_free_dma(dev, &cp->gbl_buf_info); | |
718 | cnic_free_dma(dev, &cp->conn_buf_info); | |
719 | cnic_free_dma(dev, &cp->kwq_info); | |
720 | cnic_free_dma(dev, &cp->kcq_info); | |
721 | kfree(cp->iscsi_tbl); | |
722 | cp->iscsi_tbl = NULL; | |
723 | kfree(cp->ctx_tbl); | |
724 | cp->ctx_tbl = NULL; | |
725 | ||
726 | cnic_free_id_tbl(&cp->cid_tbl); | |
727 | } | |
728 | ||
729 | static int cnic_alloc_context(struct cnic_dev *dev) | |
730 | { | |
731 | struct cnic_local *cp = dev->cnic_priv; | |
732 | ||
733 | if (CHIP_NUM(cp) == CHIP_NUM_5709) { | |
734 | int i, k, arr_size; | |
735 | ||
736 | cp->ctx_blk_size = BCM_PAGE_SIZE; | |
737 | cp->cids_per_blk = BCM_PAGE_SIZE / 128; | |
738 | arr_size = BNX2_MAX_CID / cp->cids_per_blk * | |
739 | sizeof(struct cnic_ctx); | |
740 | cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL); | |
741 | if (cp->ctx_arr == NULL) | |
742 | return -ENOMEM; | |
743 | ||
744 | k = 0; | |
745 | for (i = 0; i < 2; i++) { | |
746 | u32 j, reg, off, lo, hi; | |
747 | ||
748 | if (i == 0) | |
749 | off = BNX2_PG_CTX_MAP; | |
750 | else | |
751 | off = BNX2_ISCSI_CTX_MAP; | |
752 | ||
753 | reg = cnic_reg_rd_ind(dev, off); | |
754 | lo = reg >> 16; | |
755 | hi = reg & 0xffff; | |
756 | for (j = lo; j < hi; j += cp->cids_per_blk, k++) | |
757 | cp->ctx_arr[k].cid = j; | |
758 | } | |
759 | ||
760 | cp->ctx_blks = k; | |
761 | if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) { | |
762 | cp->ctx_blks = 0; | |
763 | return -ENOMEM; | |
764 | } | |
765 | ||
766 | for (i = 0; i < cp->ctx_blks; i++) { | |
767 | cp->ctx_arr[i].ctx = | |
768 | pci_alloc_consistent(dev->pcidev, BCM_PAGE_SIZE, | |
769 | &cp->ctx_arr[i].mapping); | |
770 | if (cp->ctx_arr[i].ctx == NULL) | |
771 | return -ENOMEM; | |
772 | } | |
773 | } | |
774 | return 0; | |
775 | } | |
776 | ||
777 | static int cnic_alloc_bnx2_resc(struct cnic_dev *dev) | |
778 | { | |
779 | struct cnic_local *cp = dev->cnic_priv; | |
780 | struct uio_info *uinfo; | |
781 | int ret; | |
782 | ||
783 | ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1); | |
784 | if (ret) | |
785 | goto error; | |
786 | cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr; | |
787 | ||
788 | ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1); | |
789 | if (ret) | |
790 | goto error; | |
791 | cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr; | |
792 | ||
793 | ret = cnic_alloc_context(dev); | |
794 | if (ret) | |
795 | goto error; | |
796 | ||
797 | cp->l2_ring_size = 2 * BCM_PAGE_SIZE; | |
798 | cp->l2_ring = pci_alloc_consistent(dev->pcidev, cp->l2_ring_size, | |
799 | &cp->l2_ring_map); | |
800 | if (!cp->l2_ring) | |
801 | goto error; | |
802 | ||
803 | cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size; | |
804 | cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size); | |
805 | cp->l2_buf = pci_alloc_consistent(dev->pcidev, cp->l2_buf_size, | |
806 | &cp->l2_buf_map); | |
807 | if (!cp->l2_buf) | |
808 | goto error; | |
809 | ||
810 | uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC); | |
811 | if (!uinfo) | |
812 | goto error; | |
813 | ||
814 | uinfo->mem[0].addr = dev->netdev->base_addr; | |
815 | uinfo->mem[0].internal_addr = dev->regview; | |
816 | uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start; | |
817 | uinfo->mem[0].memtype = UIO_MEM_PHYS; | |
818 | ||
819 | uinfo->mem[1].addr = (unsigned long) cp->status_blk & PAGE_MASK; | |
820 | if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) | |
821 | uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9; | |
822 | else | |
823 | uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE; | |
824 | uinfo->mem[1].memtype = UIO_MEM_LOGICAL; | |
825 | ||
826 | uinfo->mem[2].addr = (unsigned long) cp->l2_ring; | |
827 | uinfo->mem[2].size = cp->l2_ring_size; | |
828 | uinfo->mem[2].memtype = UIO_MEM_LOGICAL; | |
829 | ||
830 | uinfo->mem[3].addr = (unsigned long) cp->l2_buf; | |
831 | uinfo->mem[3].size = cp->l2_buf_size; | |
832 | uinfo->mem[3].memtype = UIO_MEM_LOGICAL; | |
833 | ||
834 | uinfo->name = "bnx2_cnic"; | |
835 | uinfo->version = CNIC_MODULE_VERSION; | |
836 | uinfo->irq = UIO_IRQ_CUSTOM; | |
837 | ||
838 | uinfo->open = cnic_uio_open; | |
839 | uinfo->release = cnic_uio_close; | |
840 | ||
841 | uinfo->priv = dev; | |
842 | ||
843 | ret = uio_register_device(&dev->pcidev->dev, uinfo); | |
844 | if (ret) { | |
845 | kfree(uinfo); | |
846 | goto error; | |
847 | } | |
848 | ||
849 | cp->cnic_uinfo = uinfo; | |
850 | ||
851 | return 0; | |
852 | ||
853 | error: | |
854 | cnic_free_resc(dev); | |
855 | return ret; | |
856 | } | |
857 | ||
858 | static inline u32 cnic_kwq_avail(struct cnic_local *cp) | |
859 | { | |
860 | return cp->max_kwq_idx - | |
861 | ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx); | |
862 | } | |
863 | ||
864 | static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[], | |
865 | u32 num_wqes) | |
866 | { | |
867 | struct cnic_local *cp = dev->cnic_priv; | |
868 | struct kwqe *prod_qe; | |
869 | u16 prod, sw_prod, i; | |
870 | ||
871 | if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) | |
872 | return -EAGAIN; /* bnx2 is down */ | |
873 | ||
874 | spin_lock_bh(&cp->cnic_ulp_lock); | |
875 | if (num_wqes > cnic_kwq_avail(cp) && | |
876 | !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) { | |
877 | spin_unlock_bh(&cp->cnic_ulp_lock); | |
878 | return -EAGAIN; | |
879 | } | |
880 | ||
881 | cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT; | |
882 | ||
883 | prod = cp->kwq_prod_idx; | |
884 | sw_prod = prod & MAX_KWQ_IDX; | |
885 | for (i = 0; i < num_wqes; i++) { | |
886 | prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)]; | |
887 | memcpy(prod_qe, wqes[i], sizeof(struct kwqe)); | |
888 | prod++; | |
889 | sw_prod = prod & MAX_KWQ_IDX; | |
890 | } | |
891 | cp->kwq_prod_idx = prod; | |
892 | ||
893 | CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx); | |
894 | ||
895 | spin_unlock_bh(&cp->cnic_ulp_lock); | |
896 | return 0; | |
897 | } | |
898 | ||
899 | static void service_kcqes(struct cnic_dev *dev, int num_cqes) | |
900 | { | |
901 | struct cnic_local *cp = dev->cnic_priv; | |
902 | int i, j; | |
903 | ||
904 | i = 0; | |
905 | j = 1; | |
906 | while (num_cqes) { | |
907 | struct cnic_ulp_ops *ulp_ops; | |
908 | int ulp_type; | |
909 | u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag; | |
910 | u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK; | |
911 | ||
912 | if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION)) | |
913 | cnic_kwq_completion(dev, 1); | |
914 | ||
915 | while (j < num_cqes) { | |
916 | u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag; | |
917 | ||
918 | if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer) | |
919 | break; | |
920 | ||
921 | if (unlikely(next_op & KCQE_RAMROD_COMPLETION)) | |
922 | cnic_kwq_completion(dev, 1); | |
923 | j++; | |
924 | } | |
925 | ||
926 | if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA) | |
927 | ulp_type = CNIC_ULP_RDMA; | |
928 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI) | |
929 | ulp_type = CNIC_ULP_ISCSI; | |
930 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4) | |
931 | ulp_type = CNIC_ULP_L4; | |
932 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2) | |
933 | goto end; | |
934 | else { | |
935 | printk(KERN_ERR PFX "%s: Unknown type of KCQE(0x%x)\n", | |
936 | dev->netdev->name, kcqe_op_flag); | |
937 | goto end; | |
938 | } | |
939 | ||
940 | rcu_read_lock(); | |
941 | ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); | |
942 | if (likely(ulp_ops)) { | |
943 | ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type], | |
944 | cp->completed_kcq + i, j); | |
945 | } | |
946 | rcu_read_unlock(); | |
947 | end: | |
948 | num_cqes -= j; | |
949 | i += j; | |
950 | j = 1; | |
951 | } | |
952 | return; | |
953 | } | |
954 | ||
955 | static u16 cnic_bnx2_next_idx(u16 idx) | |
956 | { | |
957 | return idx + 1; | |
958 | } | |
959 | ||
960 | static u16 cnic_bnx2_hw_idx(u16 idx) | |
961 | { | |
962 | return idx; | |
963 | } | |
964 | ||
965 | static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod) | |
966 | { | |
967 | struct cnic_local *cp = dev->cnic_priv; | |
968 | u16 i, ri, last; | |
969 | struct kcqe *kcqe; | |
970 | int kcqe_cnt = 0, last_cnt = 0; | |
971 | ||
972 | i = ri = last = *sw_prod; | |
973 | ri &= MAX_KCQ_IDX; | |
974 | ||
975 | while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) { | |
976 | kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)]; | |
977 | cp->completed_kcq[kcqe_cnt++] = kcqe; | |
978 | i = cp->next_idx(i); | |
979 | ri = i & MAX_KCQ_IDX; | |
980 | if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) { | |
981 | last_cnt = kcqe_cnt; | |
982 | last = i; | |
983 | } | |
984 | } | |
985 | ||
986 | *sw_prod = last; | |
987 | return last_cnt; | |
988 | } | |
989 | ||
990 | static void cnic_chk_bnx2_pkt_rings(struct cnic_local *cp) | |
991 | { | |
992 | u16 rx_cons = *cp->rx_cons_ptr; | |
993 | u16 tx_cons = *cp->tx_cons_ptr; | |
994 | ||
995 | if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) { | |
996 | cp->tx_cons = tx_cons; | |
997 | cp->rx_cons = rx_cons; | |
998 | uio_event_notify(cp->cnic_uinfo); | |
999 | } | |
1000 | } | |
1001 | ||
1002 | static int cnic_service_bnx2(void *data, void *status_blk) | |
1003 | { | |
1004 | struct cnic_dev *dev = data; | |
1005 | struct status_block *sblk = status_blk; | |
1006 | struct cnic_local *cp = dev->cnic_priv; | |
1007 | u32 status_idx = sblk->status_idx; | |
1008 | u16 hw_prod, sw_prod; | |
1009 | int kcqe_cnt; | |
1010 | ||
1011 | if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) | |
1012 | return status_idx; | |
1013 | ||
1014 | cp->kwq_con_idx = *cp->kwq_con_idx_ptr; | |
1015 | ||
1016 | hw_prod = sblk->status_completion_producer_index; | |
1017 | sw_prod = cp->kcq_prod_idx; | |
1018 | while (sw_prod != hw_prod) { | |
1019 | kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); | |
1020 | if (kcqe_cnt == 0) | |
1021 | goto done; | |
1022 | ||
1023 | service_kcqes(dev, kcqe_cnt); | |
1024 | ||
1025 | /* Tell compiler that status_blk fields can change. */ | |
1026 | barrier(); | |
1027 | if (status_idx != sblk->status_idx) { | |
1028 | status_idx = sblk->status_idx; | |
1029 | cp->kwq_con_idx = *cp->kwq_con_idx_ptr; | |
1030 | hw_prod = sblk->status_completion_producer_index; | |
1031 | } else | |
1032 | break; | |
1033 | } | |
1034 | ||
1035 | done: | |
1036 | CNIC_WR16(dev, cp->kcq_io_addr, sw_prod); | |
1037 | ||
1038 | cp->kcq_prod_idx = sw_prod; | |
1039 | ||
1040 | cnic_chk_bnx2_pkt_rings(cp); | |
1041 | return status_idx; | |
1042 | } | |
1043 | ||
1044 | static void cnic_service_bnx2_msix(unsigned long data) | |
1045 | { | |
1046 | struct cnic_dev *dev = (struct cnic_dev *) data; | |
1047 | struct cnic_local *cp = dev->cnic_priv; | |
1048 | struct status_block_msix *status_blk = cp->bnx2_status_blk; | |
1049 | u32 status_idx = status_blk->status_idx; | |
1050 | u16 hw_prod, sw_prod; | |
1051 | int kcqe_cnt; | |
1052 | ||
1053 | cp->kwq_con_idx = status_blk->status_cmd_consumer_index; | |
1054 | ||
1055 | hw_prod = status_blk->status_completion_producer_index; | |
1056 | sw_prod = cp->kcq_prod_idx; | |
1057 | while (sw_prod != hw_prod) { | |
1058 | kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); | |
1059 | if (kcqe_cnt == 0) | |
1060 | goto done; | |
1061 | ||
1062 | service_kcqes(dev, kcqe_cnt); | |
1063 | ||
1064 | /* Tell compiler that status_blk fields can change. */ | |
1065 | barrier(); | |
1066 | if (status_idx != status_blk->status_idx) { | |
1067 | status_idx = status_blk->status_idx; | |
1068 | cp->kwq_con_idx = status_blk->status_cmd_consumer_index; | |
1069 | hw_prod = status_blk->status_completion_producer_index; | |
1070 | } else | |
1071 | break; | |
1072 | } | |
1073 | ||
1074 | done: | |
1075 | CNIC_WR16(dev, cp->kcq_io_addr, sw_prod); | |
1076 | cp->kcq_prod_idx = sw_prod; | |
1077 | ||
1078 | cnic_chk_bnx2_pkt_rings(cp); | |
1079 | ||
1080 | cp->last_status_idx = status_idx; | |
1081 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | | |
1082 | BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); | |
1083 | } | |
1084 | ||
1085 | static irqreturn_t cnic_irq(int irq, void *dev_instance) | |
1086 | { | |
1087 | struct cnic_dev *dev = dev_instance; | |
1088 | struct cnic_local *cp = dev->cnic_priv; | |
1089 | u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX; | |
1090 | ||
1091 | if (cp->ack_int) | |
1092 | cp->ack_int(dev); | |
1093 | ||
1094 | prefetch(cp->status_blk); | |
1095 | prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]); | |
1096 | ||
1097 | if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) | |
1098 | tasklet_schedule(&cp->cnic_irq_task); | |
1099 | ||
1100 | return IRQ_HANDLED; | |
1101 | } | |
1102 | ||
1103 | static void cnic_ulp_stop(struct cnic_dev *dev) | |
1104 | { | |
1105 | struct cnic_local *cp = dev->cnic_priv; | |
1106 | int if_type; | |
1107 | ||
6d7760a8 MC |
1108 | if (cp->cnic_uinfo) |
1109 | cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); | |
1110 | ||
a4636960 MC |
1111 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { |
1112 | struct cnic_ulp_ops *ulp_ops; | |
1113 | ||
681dbd71 MC |
1114 | mutex_lock(&cnic_lock); |
1115 | ulp_ops = cp->ulp_ops[if_type]; | |
1116 | if (!ulp_ops) { | |
1117 | mutex_unlock(&cnic_lock); | |
a4636960 | 1118 | continue; |
681dbd71 MC |
1119 | } |
1120 | set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); | |
1121 | mutex_unlock(&cnic_lock); | |
a4636960 MC |
1122 | |
1123 | if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type])) | |
1124 | ulp_ops->cnic_stop(cp->ulp_handle[if_type]); | |
681dbd71 MC |
1125 | |
1126 | clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); | |
a4636960 | 1127 | } |
a4636960 MC |
1128 | } |
1129 | ||
1130 | static void cnic_ulp_start(struct cnic_dev *dev) | |
1131 | { | |
1132 | struct cnic_local *cp = dev->cnic_priv; | |
1133 | int if_type; | |
1134 | ||
a4636960 MC |
1135 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { |
1136 | struct cnic_ulp_ops *ulp_ops; | |
1137 | ||
681dbd71 MC |
1138 | mutex_lock(&cnic_lock); |
1139 | ulp_ops = cp->ulp_ops[if_type]; | |
1140 | if (!ulp_ops || !ulp_ops->cnic_start) { | |
1141 | mutex_unlock(&cnic_lock); | |
a4636960 | 1142 | continue; |
681dbd71 MC |
1143 | } |
1144 | set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); | |
1145 | mutex_unlock(&cnic_lock); | |
a4636960 MC |
1146 | |
1147 | if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type])) | |
1148 | ulp_ops->cnic_start(cp->ulp_handle[if_type]); | |
681dbd71 MC |
1149 | |
1150 | clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); | |
a4636960 | 1151 | } |
a4636960 MC |
1152 | } |
1153 | ||
1154 | static int cnic_ctl(void *data, struct cnic_ctl_info *info) | |
1155 | { | |
1156 | struct cnic_dev *dev = data; | |
1157 | ||
1158 | switch (info->cmd) { | |
1159 | case CNIC_CTL_STOP_CMD: | |
1160 | cnic_hold(dev); | |
a4636960 MC |
1161 | |
1162 | cnic_ulp_stop(dev); | |
1163 | cnic_stop_hw(dev); | |
1164 | ||
a4636960 MC |
1165 | cnic_put(dev); |
1166 | break; | |
1167 | case CNIC_CTL_START_CMD: | |
1168 | cnic_hold(dev); | |
a4636960 MC |
1169 | |
1170 | if (!cnic_start_hw(dev)) | |
1171 | cnic_ulp_start(dev); | |
1172 | ||
a4636960 MC |
1173 | cnic_put(dev); |
1174 | break; | |
1175 | default: | |
1176 | return -EINVAL; | |
1177 | } | |
1178 | return 0; | |
1179 | } | |
1180 | ||
1181 | static void cnic_ulp_init(struct cnic_dev *dev) | |
1182 | { | |
1183 | int i; | |
1184 | struct cnic_local *cp = dev->cnic_priv; | |
1185 | ||
a4636960 MC |
1186 | for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) { |
1187 | struct cnic_ulp_ops *ulp_ops; | |
1188 | ||
7fc1ece4 MC |
1189 | mutex_lock(&cnic_lock); |
1190 | ulp_ops = cnic_ulp_tbl[i]; | |
1191 | if (!ulp_ops || !ulp_ops->cnic_init) { | |
1192 | mutex_unlock(&cnic_lock); | |
a4636960 | 1193 | continue; |
7fc1ece4 MC |
1194 | } |
1195 | ulp_get(ulp_ops); | |
1196 | mutex_unlock(&cnic_lock); | |
a4636960 MC |
1197 | |
1198 | if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i])) | |
1199 | ulp_ops->cnic_init(dev); | |
1200 | ||
7fc1ece4 | 1201 | ulp_put(ulp_ops); |
a4636960 | 1202 | } |
a4636960 MC |
1203 | } |
1204 | ||
1205 | static void cnic_ulp_exit(struct cnic_dev *dev) | |
1206 | { | |
1207 | int i; | |
1208 | struct cnic_local *cp = dev->cnic_priv; | |
1209 | ||
a4636960 MC |
1210 | for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) { |
1211 | struct cnic_ulp_ops *ulp_ops; | |
1212 | ||
7fc1ece4 MC |
1213 | mutex_lock(&cnic_lock); |
1214 | ulp_ops = cnic_ulp_tbl[i]; | |
1215 | if (!ulp_ops || !ulp_ops->cnic_exit) { | |
1216 | mutex_unlock(&cnic_lock); | |
a4636960 | 1217 | continue; |
7fc1ece4 MC |
1218 | } |
1219 | ulp_get(ulp_ops); | |
1220 | mutex_unlock(&cnic_lock); | |
a4636960 MC |
1221 | |
1222 | if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i])) | |
1223 | ulp_ops->cnic_exit(dev); | |
1224 | ||
7fc1ece4 | 1225 | ulp_put(ulp_ops); |
a4636960 | 1226 | } |
a4636960 MC |
1227 | } |
1228 | ||
1229 | static int cnic_cm_offload_pg(struct cnic_sock *csk) | |
1230 | { | |
1231 | struct cnic_dev *dev = csk->dev; | |
1232 | struct l4_kwq_offload_pg *l4kwqe; | |
1233 | struct kwqe *wqes[1]; | |
1234 | ||
1235 | l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1; | |
1236 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1237 | wqes[0] = (struct kwqe *) l4kwqe; | |
1238 | ||
1239 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG; | |
1240 | l4kwqe->flags = | |
1241 | L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT; | |
1242 | l4kwqe->l2hdr_nbytes = ETH_HLEN; | |
1243 | ||
1244 | l4kwqe->da0 = csk->ha[0]; | |
1245 | l4kwqe->da1 = csk->ha[1]; | |
1246 | l4kwqe->da2 = csk->ha[2]; | |
1247 | l4kwqe->da3 = csk->ha[3]; | |
1248 | l4kwqe->da4 = csk->ha[4]; | |
1249 | l4kwqe->da5 = csk->ha[5]; | |
1250 | ||
1251 | l4kwqe->sa0 = dev->mac_addr[0]; | |
1252 | l4kwqe->sa1 = dev->mac_addr[1]; | |
1253 | l4kwqe->sa2 = dev->mac_addr[2]; | |
1254 | l4kwqe->sa3 = dev->mac_addr[3]; | |
1255 | l4kwqe->sa4 = dev->mac_addr[4]; | |
1256 | l4kwqe->sa5 = dev->mac_addr[5]; | |
1257 | ||
1258 | l4kwqe->etype = ETH_P_IP; | |
1259 | l4kwqe->ipid_count = DEF_IPID_COUNT; | |
1260 | l4kwqe->host_opaque = csk->l5_cid; | |
1261 | ||
1262 | if (csk->vlan_id) { | |
1263 | l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING; | |
1264 | l4kwqe->vlan_tag = csk->vlan_id; | |
1265 | l4kwqe->l2hdr_nbytes += 4; | |
1266 | } | |
1267 | ||
1268 | return dev->submit_kwqes(dev, wqes, 1); | |
1269 | } | |
1270 | ||
1271 | static int cnic_cm_update_pg(struct cnic_sock *csk) | |
1272 | { | |
1273 | struct cnic_dev *dev = csk->dev; | |
1274 | struct l4_kwq_update_pg *l4kwqe; | |
1275 | struct kwqe *wqes[1]; | |
1276 | ||
1277 | l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1; | |
1278 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1279 | wqes[0] = (struct kwqe *) l4kwqe; | |
1280 | ||
1281 | l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG; | |
1282 | l4kwqe->flags = | |
1283 | L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT; | |
1284 | l4kwqe->pg_cid = csk->pg_cid; | |
1285 | ||
1286 | l4kwqe->da0 = csk->ha[0]; | |
1287 | l4kwqe->da1 = csk->ha[1]; | |
1288 | l4kwqe->da2 = csk->ha[2]; | |
1289 | l4kwqe->da3 = csk->ha[3]; | |
1290 | l4kwqe->da4 = csk->ha[4]; | |
1291 | l4kwqe->da5 = csk->ha[5]; | |
1292 | ||
1293 | l4kwqe->pg_host_opaque = csk->l5_cid; | |
1294 | l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA; | |
1295 | ||
1296 | return dev->submit_kwqes(dev, wqes, 1); | |
1297 | } | |
1298 | ||
1299 | static int cnic_cm_upload_pg(struct cnic_sock *csk) | |
1300 | { | |
1301 | struct cnic_dev *dev = csk->dev; | |
1302 | struct l4_kwq_upload *l4kwqe; | |
1303 | struct kwqe *wqes[1]; | |
1304 | ||
1305 | l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1; | |
1306 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1307 | wqes[0] = (struct kwqe *) l4kwqe; | |
1308 | ||
1309 | l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG; | |
1310 | l4kwqe->flags = | |
1311 | L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT; | |
1312 | l4kwqe->cid = csk->pg_cid; | |
1313 | ||
1314 | return dev->submit_kwqes(dev, wqes, 1); | |
1315 | } | |
1316 | ||
1317 | static int cnic_cm_conn_req(struct cnic_sock *csk) | |
1318 | { | |
1319 | struct cnic_dev *dev = csk->dev; | |
1320 | struct l4_kwq_connect_req1 *l4kwqe1; | |
1321 | struct l4_kwq_connect_req2 *l4kwqe2; | |
1322 | struct l4_kwq_connect_req3 *l4kwqe3; | |
1323 | struct kwqe *wqes[3]; | |
1324 | u8 tcp_flags = 0; | |
1325 | int num_wqes = 2; | |
1326 | ||
1327 | l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1; | |
1328 | l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2; | |
1329 | l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3; | |
1330 | memset(l4kwqe1, 0, sizeof(*l4kwqe1)); | |
1331 | memset(l4kwqe2, 0, sizeof(*l4kwqe2)); | |
1332 | memset(l4kwqe3, 0, sizeof(*l4kwqe3)); | |
1333 | ||
1334 | l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3; | |
1335 | l4kwqe3->flags = | |
1336 | L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT; | |
1337 | l4kwqe3->ka_timeout = csk->ka_timeout; | |
1338 | l4kwqe3->ka_interval = csk->ka_interval; | |
1339 | l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count; | |
1340 | l4kwqe3->tos = csk->tos; | |
1341 | l4kwqe3->ttl = csk->ttl; | |
1342 | l4kwqe3->snd_seq_scale = csk->snd_seq_scale; | |
1343 | l4kwqe3->pmtu = csk->mtu; | |
1344 | l4kwqe3->rcv_buf = csk->rcv_buf; | |
1345 | l4kwqe3->snd_buf = csk->snd_buf; | |
1346 | l4kwqe3->seed = csk->seed; | |
1347 | ||
1348 | wqes[0] = (struct kwqe *) l4kwqe1; | |
1349 | if (test_bit(SK_F_IPV6, &csk->flags)) { | |
1350 | wqes[1] = (struct kwqe *) l4kwqe2; | |
1351 | wqes[2] = (struct kwqe *) l4kwqe3; | |
1352 | num_wqes = 3; | |
1353 | ||
1354 | l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6; | |
1355 | l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2; | |
1356 | l4kwqe2->flags = | |
1357 | L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT | | |
1358 | L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT; | |
1359 | l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]); | |
1360 | l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]); | |
1361 | l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]); | |
1362 | l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]); | |
1363 | l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]); | |
1364 | l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]); | |
1365 | l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) - | |
1366 | sizeof(struct tcphdr); | |
1367 | } else { | |
1368 | wqes[1] = (struct kwqe *) l4kwqe3; | |
1369 | l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) - | |
1370 | sizeof(struct tcphdr); | |
1371 | } | |
1372 | ||
1373 | l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1; | |
1374 | l4kwqe1->flags = | |
1375 | (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) | | |
1376 | L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT; | |
1377 | l4kwqe1->cid = csk->cid; | |
1378 | l4kwqe1->pg_cid = csk->pg_cid; | |
1379 | l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]); | |
1380 | l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]); | |
1381 | l4kwqe1->src_port = be16_to_cpu(csk->src_port); | |
1382 | l4kwqe1->dst_port = be16_to_cpu(csk->dst_port); | |
1383 | if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK) | |
1384 | tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK; | |
1385 | if (csk->tcp_flags & SK_TCP_KEEP_ALIVE) | |
1386 | tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE; | |
1387 | if (csk->tcp_flags & SK_TCP_NAGLE) | |
1388 | tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE; | |
1389 | if (csk->tcp_flags & SK_TCP_TIMESTAMP) | |
1390 | tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP; | |
1391 | if (csk->tcp_flags & SK_TCP_SACK) | |
1392 | tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK; | |
1393 | if (csk->tcp_flags & SK_TCP_SEG_SCALING) | |
1394 | tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING; | |
1395 | ||
1396 | l4kwqe1->tcp_flags = tcp_flags; | |
1397 | ||
1398 | return dev->submit_kwqes(dev, wqes, num_wqes); | |
1399 | } | |
1400 | ||
1401 | static int cnic_cm_close_req(struct cnic_sock *csk) | |
1402 | { | |
1403 | struct cnic_dev *dev = csk->dev; | |
1404 | struct l4_kwq_close_req *l4kwqe; | |
1405 | struct kwqe *wqes[1]; | |
1406 | ||
1407 | l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2; | |
1408 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1409 | wqes[0] = (struct kwqe *) l4kwqe; | |
1410 | ||
1411 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE; | |
1412 | l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT; | |
1413 | l4kwqe->cid = csk->cid; | |
1414 | ||
1415 | return dev->submit_kwqes(dev, wqes, 1); | |
1416 | } | |
1417 | ||
1418 | static int cnic_cm_abort_req(struct cnic_sock *csk) | |
1419 | { | |
1420 | struct cnic_dev *dev = csk->dev; | |
1421 | struct l4_kwq_reset_req *l4kwqe; | |
1422 | struct kwqe *wqes[1]; | |
1423 | ||
1424 | l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2; | |
1425 | memset(l4kwqe, 0, sizeof(*l4kwqe)); | |
1426 | wqes[0] = (struct kwqe *) l4kwqe; | |
1427 | ||
1428 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET; | |
1429 | l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT; | |
1430 | l4kwqe->cid = csk->cid; | |
1431 | ||
1432 | return dev->submit_kwqes(dev, wqes, 1); | |
1433 | } | |
1434 | ||
1435 | static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid, | |
1436 | u32 l5_cid, struct cnic_sock **csk, void *context) | |
1437 | { | |
1438 | struct cnic_local *cp = dev->cnic_priv; | |
1439 | struct cnic_sock *csk1; | |
1440 | ||
1441 | if (l5_cid >= MAX_CM_SK_TBL_SZ) | |
1442 | return -EINVAL; | |
1443 | ||
1444 | csk1 = &cp->csk_tbl[l5_cid]; | |
1445 | if (atomic_read(&csk1->ref_count)) | |
1446 | return -EAGAIN; | |
1447 | ||
1448 | if (test_and_set_bit(SK_F_INUSE, &csk1->flags)) | |
1449 | return -EBUSY; | |
1450 | ||
1451 | csk1->dev = dev; | |
1452 | csk1->cid = cid; | |
1453 | csk1->l5_cid = l5_cid; | |
1454 | csk1->ulp_type = ulp_type; | |
1455 | csk1->context = context; | |
1456 | ||
1457 | csk1->ka_timeout = DEF_KA_TIMEOUT; | |
1458 | csk1->ka_interval = DEF_KA_INTERVAL; | |
1459 | csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT; | |
1460 | csk1->tos = DEF_TOS; | |
1461 | csk1->ttl = DEF_TTL; | |
1462 | csk1->snd_seq_scale = DEF_SND_SEQ_SCALE; | |
1463 | csk1->rcv_buf = DEF_RCV_BUF; | |
1464 | csk1->snd_buf = DEF_SND_BUF; | |
1465 | csk1->seed = DEF_SEED; | |
1466 | ||
1467 | *csk = csk1; | |
1468 | return 0; | |
1469 | } | |
1470 | ||
1471 | static void cnic_cm_cleanup(struct cnic_sock *csk) | |
1472 | { | |
1473 | if (csk->src_port) { | |
1474 | struct cnic_dev *dev = csk->dev; | |
1475 | struct cnic_local *cp = dev->cnic_priv; | |
1476 | ||
1477 | cnic_free_id(&cp->csk_port_tbl, csk->src_port); | |
1478 | csk->src_port = 0; | |
1479 | } | |
1480 | } | |
1481 | ||
1482 | static void cnic_close_conn(struct cnic_sock *csk) | |
1483 | { | |
1484 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) { | |
1485 | cnic_cm_upload_pg(csk); | |
1486 | clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); | |
1487 | } | |
1488 | cnic_cm_cleanup(csk); | |
1489 | } | |
1490 | ||
1491 | static int cnic_cm_destroy(struct cnic_sock *csk) | |
1492 | { | |
1493 | if (!cnic_in_use(csk)) | |
1494 | return -EINVAL; | |
1495 | ||
1496 | csk_hold(csk); | |
1497 | clear_bit(SK_F_INUSE, &csk->flags); | |
1498 | smp_mb__after_clear_bit(); | |
1499 | while (atomic_read(&csk->ref_count) != 1) | |
1500 | msleep(1); | |
1501 | cnic_cm_cleanup(csk); | |
1502 | ||
1503 | csk->flags = 0; | |
1504 | csk_put(csk); | |
1505 | return 0; | |
1506 | } | |
1507 | ||
1508 | static inline u16 cnic_get_vlan(struct net_device *dev, | |
1509 | struct net_device **vlan_dev) | |
1510 | { | |
1511 | if (dev->priv_flags & IFF_802_1Q_VLAN) { | |
1512 | *vlan_dev = vlan_dev_real_dev(dev); | |
1513 | return vlan_dev_vlan_id(dev); | |
1514 | } | |
1515 | *vlan_dev = dev; | |
1516 | return 0; | |
1517 | } | |
1518 | ||
1519 | static int cnic_get_v4_route(struct sockaddr_in *dst_addr, | |
1520 | struct dst_entry **dst) | |
1521 | { | |
faea56c9 | 1522 | #if defined(CONFIG_INET) |
a4636960 MC |
1523 | struct flowi fl; |
1524 | int err; | |
1525 | struct rtable *rt; | |
1526 | ||
1527 | memset(&fl, 0, sizeof(fl)); | |
1528 | fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr; | |
1529 | ||
1530 | err = ip_route_output_key(&init_net, &rt, &fl); | |
1531 | if (!err) | |
1532 | *dst = &rt->u.dst; | |
1533 | return err; | |
faea56c9 RD |
1534 | #else |
1535 | return -ENETUNREACH; | |
1536 | #endif | |
a4636960 MC |
1537 | } |
1538 | ||
1539 | static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr, | |
1540 | struct dst_entry **dst) | |
1541 | { | |
faea56c9 | 1542 | #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE)) |
a4636960 MC |
1543 | struct flowi fl; |
1544 | ||
1545 | memset(&fl, 0, sizeof(fl)); | |
1546 | ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr); | |
1547 | if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL) | |
1548 | fl.oif = dst_addr->sin6_scope_id; | |
1549 | ||
1550 | *dst = ip6_route_output(&init_net, NULL, &fl); | |
1551 | if (*dst) | |
1552 | return 0; | |
1553 | #endif | |
1554 | ||
1555 | return -ENETUNREACH; | |
1556 | } | |
1557 | ||
1558 | static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr, | |
1559 | int ulp_type) | |
1560 | { | |
1561 | struct cnic_dev *dev = NULL; | |
1562 | struct dst_entry *dst; | |
1563 | struct net_device *netdev = NULL; | |
1564 | int err = -ENETUNREACH; | |
1565 | ||
1566 | if (dst_addr->sin_family == AF_INET) | |
1567 | err = cnic_get_v4_route(dst_addr, &dst); | |
1568 | else if (dst_addr->sin_family == AF_INET6) { | |
1569 | struct sockaddr_in6 *dst_addr6 = | |
1570 | (struct sockaddr_in6 *) dst_addr; | |
1571 | ||
1572 | err = cnic_get_v6_route(dst_addr6, &dst); | |
1573 | } else | |
1574 | return NULL; | |
1575 | ||
1576 | if (err) | |
1577 | return NULL; | |
1578 | ||
1579 | if (!dst->dev) | |
1580 | goto done; | |
1581 | ||
1582 | cnic_get_vlan(dst->dev, &netdev); | |
1583 | ||
1584 | dev = cnic_from_netdev(netdev); | |
1585 | ||
1586 | done: | |
1587 | dst_release(dst); | |
1588 | if (dev) | |
1589 | cnic_put(dev); | |
1590 | return dev; | |
1591 | } | |
1592 | ||
1593 | static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr) | |
1594 | { | |
1595 | struct cnic_dev *dev = csk->dev; | |
1596 | struct cnic_local *cp = dev->cnic_priv; | |
1597 | ||
1598 | return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk); | |
1599 | } | |
1600 | ||
1601 | static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr) | |
1602 | { | |
1603 | struct cnic_dev *dev = csk->dev; | |
1604 | struct cnic_local *cp = dev->cnic_priv; | |
1605 | int is_v6, err, rc = -ENETUNREACH; | |
1606 | struct dst_entry *dst; | |
1607 | struct net_device *realdev; | |
1608 | u32 local_port; | |
1609 | ||
1610 | if (saddr->local.v6.sin6_family == AF_INET6 && | |
1611 | saddr->remote.v6.sin6_family == AF_INET6) | |
1612 | is_v6 = 1; | |
1613 | else if (saddr->local.v4.sin_family == AF_INET && | |
1614 | saddr->remote.v4.sin_family == AF_INET) | |
1615 | is_v6 = 0; | |
1616 | else | |
1617 | return -EINVAL; | |
1618 | ||
1619 | clear_bit(SK_F_IPV6, &csk->flags); | |
1620 | ||
1621 | if (is_v6) { | |
faea56c9 | 1622 | #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE)) |
a4636960 MC |
1623 | set_bit(SK_F_IPV6, &csk->flags); |
1624 | err = cnic_get_v6_route(&saddr->remote.v6, &dst); | |
1625 | if (err) | |
1626 | return err; | |
1627 | ||
1628 | if (!dst || dst->error || !dst->dev) | |
1629 | goto err_out; | |
1630 | ||
1631 | memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr, | |
1632 | sizeof(struct in6_addr)); | |
1633 | csk->dst_port = saddr->remote.v6.sin6_port; | |
1634 | local_port = saddr->local.v6.sin6_port; | |
1635 | #else | |
1636 | return rc; | |
1637 | #endif | |
1638 | ||
1639 | } else { | |
1640 | err = cnic_get_v4_route(&saddr->remote.v4, &dst); | |
1641 | if (err) | |
1642 | return err; | |
1643 | ||
1644 | if (!dst || dst->error || !dst->dev) | |
1645 | goto err_out; | |
1646 | ||
1647 | csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr; | |
1648 | csk->dst_port = saddr->remote.v4.sin_port; | |
1649 | local_port = saddr->local.v4.sin_port; | |
1650 | } | |
1651 | ||
1652 | csk->vlan_id = cnic_get_vlan(dst->dev, &realdev); | |
1653 | if (realdev != dev->netdev) | |
1654 | goto err_out; | |
1655 | ||
1656 | if (local_port >= CNIC_LOCAL_PORT_MIN && | |
1657 | local_port < CNIC_LOCAL_PORT_MAX) { | |
1658 | if (cnic_alloc_id(&cp->csk_port_tbl, local_port)) | |
1659 | local_port = 0; | |
1660 | } else | |
1661 | local_port = 0; | |
1662 | ||
1663 | if (!local_port) { | |
1664 | local_port = cnic_alloc_new_id(&cp->csk_port_tbl); | |
1665 | if (local_port == -1) { | |
1666 | rc = -ENOMEM; | |
1667 | goto err_out; | |
1668 | } | |
1669 | } | |
1670 | csk->src_port = local_port; | |
1671 | ||
1672 | csk->mtu = dst_mtu(dst); | |
1673 | rc = 0; | |
1674 | ||
1675 | err_out: | |
1676 | dst_release(dst); | |
1677 | return rc; | |
1678 | } | |
1679 | ||
1680 | static void cnic_init_csk_state(struct cnic_sock *csk) | |
1681 | { | |
1682 | csk->state = 0; | |
1683 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); | |
1684 | clear_bit(SK_F_CLOSING, &csk->flags); | |
1685 | } | |
1686 | ||
1687 | static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr) | |
1688 | { | |
1689 | int err = 0; | |
1690 | ||
1691 | if (!cnic_in_use(csk)) | |
1692 | return -EINVAL; | |
1693 | ||
1694 | if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags)) | |
1695 | return -EINVAL; | |
1696 | ||
1697 | cnic_init_csk_state(csk); | |
1698 | ||
1699 | err = cnic_get_route(csk, saddr); | |
1700 | if (err) | |
1701 | goto err_out; | |
1702 | ||
1703 | err = cnic_resolve_addr(csk, saddr); | |
1704 | if (!err) | |
1705 | return 0; | |
1706 | ||
1707 | err_out: | |
1708 | clear_bit(SK_F_CONNECT_START, &csk->flags); | |
1709 | return err; | |
1710 | } | |
1711 | ||
1712 | static int cnic_cm_abort(struct cnic_sock *csk) | |
1713 | { | |
1714 | struct cnic_local *cp = csk->dev->cnic_priv; | |
1715 | u32 opcode; | |
1716 | ||
1717 | if (!cnic_in_use(csk)) | |
1718 | return -EINVAL; | |
1719 | ||
1720 | if (cnic_abort_prep(csk)) | |
1721 | return cnic_cm_abort_req(csk); | |
1722 | ||
1723 | /* Getting here means that we haven't started connect, or | |
1724 | * connect was not successful. | |
1725 | */ | |
1726 | ||
1727 | csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; | |
1728 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) | |
1729 | opcode = csk->state; | |
1730 | else | |
1731 | opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD; | |
1732 | cp->close_conn(csk, opcode); | |
1733 | ||
1734 | return 0; | |
1735 | } | |
1736 | ||
1737 | static int cnic_cm_close(struct cnic_sock *csk) | |
1738 | { | |
1739 | if (!cnic_in_use(csk)) | |
1740 | return -EINVAL; | |
1741 | ||
1742 | if (cnic_close_prep(csk)) { | |
1743 | csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP; | |
1744 | return cnic_cm_close_req(csk); | |
1745 | } | |
1746 | return 0; | |
1747 | } | |
1748 | ||
1749 | static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk, | |
1750 | u8 opcode) | |
1751 | { | |
1752 | struct cnic_ulp_ops *ulp_ops; | |
1753 | int ulp_type = csk->ulp_type; | |
1754 | ||
1755 | rcu_read_lock(); | |
1756 | ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); | |
1757 | if (ulp_ops) { | |
1758 | if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE) | |
1759 | ulp_ops->cm_connect_complete(csk); | |
1760 | else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) | |
1761 | ulp_ops->cm_close_complete(csk); | |
1762 | else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) | |
1763 | ulp_ops->cm_remote_abort(csk); | |
1764 | else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP) | |
1765 | ulp_ops->cm_abort_complete(csk); | |
1766 | else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED) | |
1767 | ulp_ops->cm_remote_close(csk); | |
1768 | } | |
1769 | rcu_read_unlock(); | |
1770 | } | |
1771 | ||
1772 | static int cnic_cm_set_pg(struct cnic_sock *csk) | |
1773 | { | |
1774 | if (cnic_offld_prep(csk)) { | |
1775 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) | |
1776 | cnic_cm_update_pg(csk); | |
1777 | else | |
1778 | cnic_cm_offload_pg(csk); | |
1779 | } | |
1780 | return 0; | |
1781 | } | |
1782 | ||
1783 | static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe) | |
1784 | { | |
1785 | struct cnic_local *cp = dev->cnic_priv; | |
1786 | u32 l5_cid = kcqe->pg_host_opaque; | |
1787 | u8 opcode = kcqe->op_code; | |
1788 | struct cnic_sock *csk = &cp->csk_tbl[l5_cid]; | |
1789 | ||
1790 | csk_hold(csk); | |
1791 | if (!cnic_in_use(csk)) | |
1792 | goto done; | |
1793 | ||
1794 | if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { | |
1795 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); | |
1796 | goto done; | |
1797 | } | |
1798 | csk->pg_cid = kcqe->pg_cid; | |
1799 | set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); | |
1800 | cnic_cm_conn_req(csk); | |
1801 | ||
1802 | done: | |
1803 | csk_put(csk); | |
1804 | } | |
1805 | ||
1806 | static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe) | |
1807 | { | |
1808 | struct cnic_local *cp = dev->cnic_priv; | |
1809 | struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe; | |
1810 | u8 opcode = l4kcqe->op_code; | |
1811 | u32 l5_cid; | |
1812 | struct cnic_sock *csk; | |
1813 | ||
1814 | if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG || | |
1815 | opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { | |
1816 | cnic_cm_process_offld_pg(dev, l4kcqe); | |
1817 | return; | |
1818 | } | |
1819 | ||
1820 | l5_cid = l4kcqe->conn_id; | |
1821 | if (opcode & 0x80) | |
1822 | l5_cid = l4kcqe->cid; | |
1823 | if (l5_cid >= MAX_CM_SK_TBL_SZ) | |
1824 | return; | |
1825 | ||
1826 | csk = &cp->csk_tbl[l5_cid]; | |
1827 | csk_hold(csk); | |
1828 | ||
1829 | if (!cnic_in_use(csk)) { | |
1830 | csk_put(csk); | |
1831 | return; | |
1832 | } | |
1833 | ||
1834 | switch (opcode) { | |
1835 | case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE: | |
1836 | if (l4kcqe->status == 0) | |
1837 | set_bit(SK_F_OFFLD_COMPLETE, &csk->flags); | |
1838 | ||
1839 | smp_mb__before_clear_bit(); | |
1840 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); | |
1841 | cnic_cm_upcall(cp, csk, opcode); | |
1842 | break; | |
1843 | ||
1844 | case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED: | |
1845 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) | |
1846 | csk->state = opcode; | |
1847 | /* fall through */ | |
1848 | case L4_KCQE_OPCODE_VALUE_CLOSE_COMP: | |
1849 | case L4_KCQE_OPCODE_VALUE_RESET_COMP: | |
1850 | cp->close_conn(csk, opcode); | |
1851 | break; | |
1852 | ||
1853 | case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED: | |
1854 | cnic_cm_upcall(cp, csk, opcode); | |
1855 | break; | |
1856 | } | |
1857 | csk_put(csk); | |
1858 | } | |
1859 | ||
1860 | static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num) | |
1861 | { | |
1862 | struct cnic_dev *dev = data; | |
1863 | int i; | |
1864 | ||
1865 | for (i = 0; i < num; i++) | |
1866 | cnic_cm_process_kcqe(dev, kcqe[i]); | |
1867 | } | |
1868 | ||
1869 | static struct cnic_ulp_ops cm_ulp_ops = { | |
1870 | .indicate_kcqes = cnic_cm_indicate_kcqe, | |
1871 | }; | |
1872 | ||
1873 | static void cnic_cm_free_mem(struct cnic_dev *dev) | |
1874 | { | |
1875 | struct cnic_local *cp = dev->cnic_priv; | |
1876 | ||
1877 | kfree(cp->csk_tbl); | |
1878 | cp->csk_tbl = NULL; | |
1879 | cnic_free_id_tbl(&cp->csk_port_tbl); | |
1880 | } | |
1881 | ||
1882 | static int cnic_cm_alloc_mem(struct cnic_dev *dev) | |
1883 | { | |
1884 | struct cnic_local *cp = dev->cnic_priv; | |
1885 | ||
1886 | cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ, | |
1887 | GFP_KERNEL); | |
1888 | if (!cp->csk_tbl) | |
1889 | return -ENOMEM; | |
1890 | ||
1891 | if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE, | |
1892 | CNIC_LOCAL_PORT_MIN)) { | |
1893 | cnic_cm_free_mem(dev); | |
1894 | return -ENOMEM; | |
1895 | } | |
1896 | return 0; | |
1897 | } | |
1898 | ||
1899 | static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode) | |
1900 | { | |
1901 | if ((opcode == csk->state) || | |
1902 | (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED && | |
1903 | csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) { | |
1904 | if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) | |
1905 | return 1; | |
1906 | } | |
1907 | return 0; | |
1908 | } | |
1909 | ||
1910 | static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode) | |
1911 | { | |
1912 | struct cnic_dev *dev = csk->dev; | |
1913 | struct cnic_local *cp = dev->cnic_priv; | |
1914 | ||
1915 | clear_bit(SK_F_CONNECT_START, &csk->flags); | |
1916 | if (cnic_ready_to_close(csk, opcode)) { | |
1917 | cnic_close_conn(csk); | |
1918 | cnic_cm_upcall(cp, csk, opcode); | |
1919 | } | |
1920 | } | |
1921 | ||
1922 | static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev) | |
1923 | { | |
1924 | } | |
1925 | ||
1926 | static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev) | |
1927 | { | |
1928 | u32 seed; | |
1929 | ||
1930 | get_random_bytes(&seed, 4); | |
1931 | cnic_ctx_wr(dev, 45, 0, seed); | |
1932 | return 0; | |
1933 | } | |
1934 | ||
1935 | static int cnic_cm_open(struct cnic_dev *dev) | |
1936 | { | |
1937 | struct cnic_local *cp = dev->cnic_priv; | |
1938 | int err; | |
1939 | ||
1940 | err = cnic_cm_alloc_mem(dev); | |
1941 | if (err) | |
1942 | return err; | |
1943 | ||
1944 | err = cp->start_cm(dev); | |
1945 | ||
1946 | if (err) | |
1947 | goto err_out; | |
1948 | ||
1949 | dev->cm_create = cnic_cm_create; | |
1950 | dev->cm_destroy = cnic_cm_destroy; | |
1951 | dev->cm_connect = cnic_cm_connect; | |
1952 | dev->cm_abort = cnic_cm_abort; | |
1953 | dev->cm_close = cnic_cm_close; | |
1954 | dev->cm_select_dev = cnic_cm_select_dev; | |
1955 | ||
1956 | cp->ulp_handle[CNIC_ULP_L4] = dev; | |
1957 | rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops); | |
1958 | return 0; | |
1959 | ||
1960 | err_out: | |
1961 | cnic_cm_free_mem(dev); | |
1962 | return err; | |
1963 | } | |
1964 | ||
1965 | static int cnic_cm_shutdown(struct cnic_dev *dev) | |
1966 | { | |
1967 | struct cnic_local *cp = dev->cnic_priv; | |
1968 | int i; | |
1969 | ||
1970 | cp->stop_cm(dev); | |
1971 | ||
1972 | if (!cp->csk_tbl) | |
1973 | return 0; | |
1974 | ||
1975 | for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) { | |
1976 | struct cnic_sock *csk = &cp->csk_tbl[i]; | |
1977 | ||
1978 | clear_bit(SK_F_INUSE, &csk->flags); | |
1979 | cnic_cm_cleanup(csk); | |
1980 | } | |
1981 | cnic_cm_free_mem(dev); | |
1982 | ||
1983 | return 0; | |
1984 | } | |
1985 | ||
1986 | static void cnic_init_context(struct cnic_dev *dev, u32 cid) | |
1987 | { | |
1988 | struct cnic_local *cp = dev->cnic_priv; | |
1989 | u32 cid_addr; | |
1990 | int i; | |
1991 | ||
1992 | if (CHIP_NUM(cp) == CHIP_NUM_5709) | |
1993 | return; | |
1994 | ||
1995 | cid_addr = GET_CID_ADDR(cid); | |
1996 | ||
1997 | for (i = 0; i < CTX_SIZE; i += 4) | |
1998 | cnic_ctx_wr(dev, cid_addr, i, 0); | |
1999 | } | |
2000 | ||
2001 | static int cnic_setup_5709_context(struct cnic_dev *dev, int valid) | |
2002 | { | |
2003 | struct cnic_local *cp = dev->cnic_priv; | |
2004 | int ret = 0, i; | |
2005 | u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0; | |
2006 | ||
2007 | if (CHIP_NUM(cp) != CHIP_NUM_5709) | |
2008 | return 0; | |
2009 | ||
2010 | for (i = 0; i < cp->ctx_blks; i++) { | |
2011 | int j; | |
2012 | u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk; | |
2013 | u32 val; | |
2014 | ||
2015 | memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE); | |
2016 | ||
2017 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0, | |
2018 | (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit); | |
2019 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1, | |
2020 | (u64) cp->ctx_arr[i].mapping >> 32); | |
2021 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx | | |
2022 | BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ); | |
2023 | for (j = 0; j < 10; j++) { | |
2024 | ||
2025 | val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL); | |
2026 | if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ)) | |
2027 | break; | |
2028 | udelay(5); | |
2029 | } | |
2030 | if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) { | |
2031 | ret = -EBUSY; | |
2032 | break; | |
2033 | } | |
2034 | } | |
2035 | return ret; | |
2036 | } | |
2037 | ||
2038 | static void cnic_free_irq(struct cnic_dev *dev) | |
2039 | { | |
2040 | struct cnic_local *cp = dev->cnic_priv; | |
2041 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2042 | ||
2043 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2044 | cp->disable_int_sync(dev); | |
2045 | tasklet_disable(&cp->cnic_irq_task); | |
2046 | free_irq(ethdev->irq_arr[0].vector, dev); | |
2047 | } | |
2048 | } | |
2049 | ||
2050 | static int cnic_init_bnx2_irq(struct cnic_dev *dev) | |
2051 | { | |
2052 | struct cnic_local *cp = dev->cnic_priv; | |
2053 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2054 | ||
2055 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2056 | int err, i = 0; | |
2057 | int sblk_num = cp->status_blk_num; | |
2058 | u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) + | |
2059 | BNX2_HC_SB_CONFIG_1; | |
2060 | ||
2061 | CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT); | |
2062 | ||
2063 | CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8); | |
2064 | CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220); | |
2065 | CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220); | |
2066 | ||
2067 | cp->bnx2_status_blk = cp->status_blk; | |
2068 | cp->last_status_idx = cp->bnx2_status_blk->status_idx; | |
2069 | tasklet_init(&cp->cnic_irq_task, &cnic_service_bnx2_msix, | |
2070 | (unsigned long) dev); | |
2071 | err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, | |
2072 | "cnic", dev); | |
2073 | if (err) { | |
2074 | tasklet_disable(&cp->cnic_irq_task); | |
2075 | return err; | |
2076 | } | |
2077 | while (cp->bnx2_status_blk->status_completion_producer_index && | |
2078 | i < 10) { | |
2079 | CNIC_WR(dev, BNX2_HC_COALESCE_NOW, | |
2080 | 1 << (11 + sblk_num)); | |
2081 | udelay(10); | |
2082 | i++; | |
2083 | barrier(); | |
2084 | } | |
2085 | if (cp->bnx2_status_blk->status_completion_producer_index) { | |
2086 | cnic_free_irq(dev); | |
2087 | goto failed; | |
2088 | } | |
2089 | ||
2090 | } else { | |
2091 | struct status_block *sblk = cp->status_blk; | |
2092 | u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND); | |
2093 | int i = 0; | |
2094 | ||
2095 | while (sblk->status_completion_producer_index && i < 10) { | |
2096 | CNIC_WR(dev, BNX2_HC_COMMAND, | |
2097 | hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT); | |
2098 | udelay(10); | |
2099 | i++; | |
2100 | barrier(); | |
2101 | } | |
2102 | if (sblk->status_completion_producer_index) | |
2103 | goto failed; | |
2104 | ||
2105 | } | |
2106 | return 0; | |
2107 | ||
2108 | failed: | |
2109 | printk(KERN_ERR PFX "%s: " "KCQ index not resetting to 0.\n", | |
2110 | dev->netdev->name); | |
2111 | return -EBUSY; | |
2112 | } | |
2113 | ||
2114 | static void cnic_enable_bnx2_int(struct cnic_dev *dev) | |
2115 | { | |
2116 | struct cnic_local *cp = dev->cnic_priv; | |
2117 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2118 | ||
2119 | if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) | |
2120 | return; | |
2121 | ||
2122 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | | |
2123 | BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); | |
2124 | } | |
2125 | ||
2126 | static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev) | |
2127 | { | |
2128 | struct cnic_local *cp = dev->cnic_priv; | |
2129 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2130 | ||
2131 | if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) | |
2132 | return; | |
2133 | ||
2134 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | | |
2135 | BNX2_PCICFG_INT_ACK_CMD_MASK_INT); | |
2136 | CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD); | |
2137 | synchronize_irq(ethdev->irq_arr[0].vector); | |
2138 | } | |
2139 | ||
2140 | static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev) | |
2141 | { | |
2142 | struct cnic_local *cp = dev->cnic_priv; | |
2143 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2144 | u32 cid_addr, tx_cid, sb_id; | |
2145 | u32 val, offset0, offset1, offset2, offset3; | |
2146 | int i; | |
2147 | struct tx_bd *txbd; | |
2148 | dma_addr_t buf_map; | |
2149 | struct status_block *s_blk = cp->status_blk; | |
2150 | ||
2151 | sb_id = cp->status_blk_num; | |
2152 | tx_cid = 20; | |
2153 | cnic_init_context(dev, tx_cid); | |
2154 | cnic_init_context(dev, tx_cid + 1); | |
2155 | cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2; | |
2156 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2157 | struct status_block_msix *sblk = cp->status_blk; | |
2158 | ||
2159 | tx_cid = TX_TSS_CID + sb_id - 1; | |
2160 | cnic_init_context(dev, tx_cid); | |
2161 | CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) | | |
2162 | (TX_TSS_CID << 7)); | |
2163 | cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index; | |
2164 | } | |
2165 | cp->tx_cons = *cp->tx_cons_ptr; | |
2166 | ||
2167 | cid_addr = GET_CID_ADDR(tx_cid); | |
2168 | if (CHIP_NUM(cp) == CHIP_NUM_5709) { | |
2169 | u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40; | |
2170 | ||
2171 | for (i = 0; i < PHY_CTX_SIZE; i += 4) | |
2172 | cnic_ctx_wr(dev, cid_addr2, i, 0); | |
2173 | ||
2174 | offset0 = BNX2_L2CTX_TYPE_XI; | |
2175 | offset1 = BNX2_L2CTX_CMD_TYPE_XI; | |
2176 | offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI; | |
2177 | offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI; | |
2178 | } else { | |
2179 | offset0 = BNX2_L2CTX_TYPE; | |
2180 | offset1 = BNX2_L2CTX_CMD_TYPE; | |
2181 | offset2 = BNX2_L2CTX_TBDR_BHADDR_HI; | |
2182 | offset3 = BNX2_L2CTX_TBDR_BHADDR_LO; | |
2183 | } | |
2184 | val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2; | |
2185 | cnic_ctx_wr(dev, cid_addr, offset0, val); | |
2186 | ||
2187 | val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16); | |
2188 | cnic_ctx_wr(dev, cid_addr, offset1, val); | |
2189 | ||
2190 | txbd = (struct tx_bd *) cp->l2_ring; | |
2191 | ||
2192 | buf_map = cp->l2_buf_map; | |
2193 | for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) { | |
2194 | txbd->tx_bd_haddr_hi = (u64) buf_map >> 32; | |
2195 | txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff; | |
2196 | } | |
2197 | val = (u64) cp->l2_ring_map >> 32; | |
2198 | cnic_ctx_wr(dev, cid_addr, offset2, val); | |
2199 | txbd->tx_bd_haddr_hi = val; | |
2200 | ||
2201 | val = (u64) cp->l2_ring_map & 0xffffffff; | |
2202 | cnic_ctx_wr(dev, cid_addr, offset3, val); | |
2203 | txbd->tx_bd_haddr_lo = val; | |
2204 | } | |
2205 | ||
2206 | static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev) | |
2207 | { | |
2208 | struct cnic_local *cp = dev->cnic_priv; | |
2209 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2210 | u32 cid_addr, sb_id, val, coal_reg, coal_val; | |
2211 | int i; | |
2212 | struct rx_bd *rxbd; | |
2213 | struct status_block *s_blk = cp->status_blk; | |
2214 | ||
2215 | sb_id = cp->status_blk_num; | |
2216 | cnic_init_context(dev, 2); | |
2217 | cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2; | |
2218 | coal_reg = BNX2_HC_COMMAND; | |
2219 | coal_val = CNIC_RD(dev, coal_reg); | |
2220 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2221 | struct status_block_msix *sblk = cp->status_blk; | |
2222 | ||
2223 | cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index; | |
2224 | coal_reg = BNX2_HC_COALESCE_NOW; | |
2225 | coal_val = 1 << (11 + sb_id); | |
2226 | } | |
2227 | i = 0; | |
2228 | while (!(*cp->rx_cons_ptr != 0) && i < 10) { | |
2229 | CNIC_WR(dev, coal_reg, coal_val); | |
2230 | udelay(10); | |
2231 | i++; | |
2232 | barrier(); | |
2233 | } | |
2234 | cp->rx_cons = *cp->rx_cons_ptr; | |
2235 | ||
2236 | cid_addr = GET_CID_ADDR(2); | |
2237 | val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE | | |
2238 | BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8); | |
2239 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val); | |
2240 | ||
2241 | if (sb_id == 0) | |
2242 | val = 2 << BNX2_L2CTX_STATUSB_NUM_SHIFT; | |
2243 | else | |
2244 | val = BNX2_L2CTX_STATUSB_NUM(sb_id); | |
2245 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val); | |
2246 | ||
2247 | rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE); | |
2248 | for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) { | |
2249 | dma_addr_t buf_map; | |
2250 | int n = (i % cp->l2_rx_ring_size) + 1; | |
2251 | ||
2252 | buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size); | |
2253 | rxbd->rx_bd_len = cp->l2_single_buf_size; | |
2254 | rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END; | |
2255 | rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32; | |
2256 | rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff; | |
2257 | } | |
2258 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32; | |
2259 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val); | |
2260 | rxbd->rx_bd_haddr_hi = val; | |
2261 | ||
2262 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff; | |
2263 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val); | |
2264 | rxbd->rx_bd_haddr_lo = val; | |
2265 | ||
2266 | val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD); | |
2267 | cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2)); | |
2268 | } | |
2269 | ||
2270 | static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev) | |
2271 | { | |
2272 | struct kwqe *wqes[1], l2kwqe; | |
2273 | ||
2274 | memset(&l2kwqe, 0, sizeof(l2kwqe)); | |
2275 | wqes[0] = &l2kwqe; | |
2276 | l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) | | |
2277 | (L2_KWQE_OPCODE_VALUE_FLUSH << | |
2278 | KWQE_OPCODE_SHIFT) | 2; | |
2279 | dev->submit_kwqes(dev, wqes, 1); | |
2280 | } | |
2281 | ||
2282 | static void cnic_set_bnx2_mac(struct cnic_dev *dev) | |
2283 | { | |
2284 | struct cnic_local *cp = dev->cnic_priv; | |
2285 | u32 val; | |
2286 | ||
2287 | val = cp->func << 2; | |
2288 | ||
2289 | cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val); | |
2290 | ||
2291 | val = cnic_reg_rd_ind(dev, cp->shmem_base + | |
2292 | BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER); | |
2293 | dev->mac_addr[0] = (u8) (val >> 8); | |
2294 | dev->mac_addr[1] = (u8) val; | |
2295 | ||
2296 | CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val); | |
2297 | ||
2298 | val = cnic_reg_rd_ind(dev, cp->shmem_base + | |
2299 | BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER); | |
2300 | dev->mac_addr[2] = (u8) (val >> 24); | |
2301 | dev->mac_addr[3] = (u8) (val >> 16); | |
2302 | dev->mac_addr[4] = (u8) (val >> 8); | |
2303 | dev->mac_addr[5] = (u8) val; | |
2304 | ||
2305 | CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val); | |
2306 | ||
2307 | val = 4 | BNX2_RPM_SORT_USER2_BC_EN; | |
2308 | if (CHIP_NUM(cp) != CHIP_NUM_5709) | |
2309 | val |= BNX2_RPM_SORT_USER2_PROM_VLAN; | |
2310 | ||
2311 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0); | |
2312 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, val); | |
2313 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA); | |
2314 | } | |
2315 | ||
2316 | static int cnic_start_bnx2_hw(struct cnic_dev *dev) | |
2317 | { | |
2318 | struct cnic_local *cp = dev->cnic_priv; | |
2319 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2320 | struct status_block *sblk = cp->status_blk; | |
2321 | u32 val; | |
2322 | int err; | |
2323 | ||
2324 | cnic_set_bnx2_mac(dev); | |
2325 | ||
2326 | val = CNIC_RD(dev, BNX2_MQ_CONFIG); | |
2327 | val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE; | |
2328 | if (BCM_PAGE_BITS > 12) | |
2329 | val |= (12 - 8) << 4; | |
2330 | else | |
2331 | val |= (BCM_PAGE_BITS - 8) << 4; | |
2332 | ||
2333 | CNIC_WR(dev, BNX2_MQ_CONFIG, val); | |
2334 | ||
2335 | CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8); | |
2336 | CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220); | |
2337 | CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220); | |
2338 | ||
2339 | err = cnic_setup_5709_context(dev, 1); | |
2340 | if (err) | |
2341 | return err; | |
2342 | ||
2343 | cnic_init_context(dev, KWQ_CID); | |
2344 | cnic_init_context(dev, KCQ_CID); | |
2345 | ||
2346 | cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID); | |
2347 | cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX; | |
2348 | ||
2349 | cp->max_kwq_idx = MAX_KWQ_IDX; | |
2350 | cp->kwq_prod_idx = 0; | |
2351 | cp->kwq_con_idx = 0; | |
2352 | cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT; | |
2353 | ||
2354 | if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708) | |
2355 | cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15; | |
2356 | else | |
2357 | cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index; | |
2358 | ||
2359 | /* Initialize the kernel work queue context. */ | |
2360 | val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | | |
2361 | (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; | |
2362 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val); | |
2363 | ||
2364 | val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16; | |
2365 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); | |
2366 | ||
2367 | val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT; | |
2368 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); | |
2369 | ||
2370 | val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32); | |
2371 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); | |
2372 | ||
2373 | val = (u32) cp->kwq_info.pgtbl_map; | |
2374 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); | |
2375 | ||
2376 | cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID); | |
2377 | cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX; | |
2378 | ||
2379 | cp->kcq_prod_idx = 0; | |
2380 | ||
2381 | /* Initialize the kernel complete queue context. */ | |
2382 | val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | | |
2383 | (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; | |
2384 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val); | |
2385 | ||
2386 | val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16; | |
2387 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); | |
2388 | ||
2389 | val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT; | |
2390 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); | |
2391 | ||
2392 | val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32); | |
2393 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); | |
2394 | ||
2395 | val = (u32) cp->kcq_info.pgtbl_map; | |
2396 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); | |
2397 | ||
2398 | cp->int_num = 0; | |
2399 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { | |
2400 | u32 sb_id = cp->status_blk_num; | |
2401 | u32 sb = BNX2_L2CTX_STATUSB_NUM(sb_id); | |
2402 | ||
2403 | cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT; | |
2404 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); | |
2405 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); | |
2406 | } | |
2407 | ||
2408 | /* Enable Commnad Scheduler notification when we write to the | |
2409 | * host producer index of the kernel contexts. */ | |
2410 | CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2); | |
2411 | ||
2412 | /* Enable Command Scheduler notification when we write to either | |
2413 | * the Send Queue or Receive Queue producer indexes of the kernel | |
2414 | * bypass contexts. */ | |
2415 | CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7); | |
2416 | CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7); | |
2417 | ||
2418 | /* Notify COM when the driver post an application buffer. */ | |
2419 | CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000); | |
2420 | ||
2421 | /* Set the CP and COM doorbells. These two processors polls the | |
2422 | * doorbell for a non zero value before running. This must be done | |
2423 | * after setting up the kernel queue contexts. */ | |
2424 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1); | |
2425 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1); | |
2426 | ||
2427 | cnic_init_bnx2_tx_ring(dev); | |
2428 | cnic_init_bnx2_rx_ring(dev); | |
2429 | ||
2430 | err = cnic_init_bnx2_irq(dev); | |
2431 | if (err) { | |
2432 | printk(KERN_ERR PFX "%s: cnic_init_irq failed\n", | |
2433 | dev->netdev->name); | |
2434 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); | |
2435 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); | |
2436 | return err; | |
2437 | } | |
2438 | ||
2439 | return 0; | |
2440 | } | |
2441 | ||
a3059b12 | 2442 | static int cnic_register_netdev(struct cnic_dev *dev) |
a4636960 MC |
2443 | { |
2444 | struct cnic_local *cp = dev->cnic_priv; | |
2445 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2446 | int err; | |
2447 | ||
a3059b12 MC |
2448 | if (!ethdev) |
2449 | return -ENODEV; | |
2450 | ||
2451 | if (ethdev->drv_state & CNIC_DRV_STATE_REGD) | |
2452 | return 0; | |
a4636960 MC |
2453 | |
2454 | err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev); | |
a3059b12 | 2455 | if (err) |
a4636960 MC |
2456 | printk(KERN_ERR PFX "%s: register_cnic failed\n", |
2457 | dev->netdev->name); | |
a3059b12 MC |
2458 | |
2459 | return err; | |
2460 | } | |
2461 | ||
2462 | static void cnic_unregister_netdev(struct cnic_dev *dev) | |
2463 | { | |
2464 | struct cnic_local *cp = dev->cnic_priv; | |
2465 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2466 | ||
2467 | if (!ethdev) | |
2468 | return; | |
2469 | ||
2470 | ethdev->drv_unregister_cnic(dev->netdev); | |
2471 | } | |
2472 | ||
2473 | static int cnic_start_hw(struct cnic_dev *dev) | |
2474 | { | |
2475 | struct cnic_local *cp = dev->cnic_priv; | |
2476 | struct cnic_eth_dev *ethdev = cp->ethdev; | |
2477 | int err; | |
2478 | ||
2479 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) | |
2480 | return -EALREADY; | |
a4636960 MC |
2481 | |
2482 | dev->regview = ethdev->io_base; | |
2483 | cp->chip_id = ethdev->chip_id; | |
2484 | pci_dev_get(dev->pcidev); | |
2485 | cp->func = PCI_FUNC(dev->pcidev->devfn); | |
2486 | cp->status_blk = ethdev->irq_arr[0].status_blk; | |
2487 | cp->status_blk_num = ethdev->irq_arr[0].status_blk_num; | |
2488 | ||
2489 | err = cp->alloc_resc(dev); | |
2490 | if (err) { | |
2491 | printk(KERN_ERR PFX "%s: allocate resource failure\n", | |
2492 | dev->netdev->name); | |
2493 | goto err1; | |
2494 | } | |
2495 | ||
2496 | err = cp->start_hw(dev); | |
2497 | if (err) | |
2498 | goto err1; | |
2499 | ||
2500 | err = cnic_cm_open(dev); | |
2501 | if (err) | |
2502 | goto err1; | |
2503 | ||
2504 | set_bit(CNIC_F_CNIC_UP, &dev->flags); | |
2505 | ||
2506 | cp->enable_int(dev); | |
2507 | ||
2508 | return 0; | |
2509 | ||
2510 | err1: | |
a4636960 MC |
2511 | cp->free_resc(dev); |
2512 | pci_dev_put(dev->pcidev); | |
a4636960 MC |
2513 | return err; |
2514 | } | |
2515 | ||
2516 | static void cnic_stop_bnx2_hw(struct cnic_dev *dev) | |
2517 | { | |
a4636960 MC |
2518 | cnic_disable_bnx2_int_sync(dev); |
2519 | ||
2520 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); | |
2521 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); | |
2522 | ||
2523 | cnic_init_context(dev, KWQ_CID); | |
2524 | cnic_init_context(dev, KCQ_CID); | |
2525 | ||
2526 | cnic_setup_5709_context(dev, 0); | |
2527 | cnic_free_irq(dev); | |
2528 | ||
a4636960 MC |
2529 | cnic_free_resc(dev); |
2530 | } | |
2531 | ||
2532 | static void cnic_stop_hw(struct cnic_dev *dev) | |
2533 | { | |
2534 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { | |
2535 | struct cnic_local *cp = dev->cnic_priv; | |
2536 | ||
2537 | clear_bit(CNIC_F_CNIC_UP, &dev->flags); | |
2538 | rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL); | |
2539 | synchronize_rcu(); | |
2540 | cnic_cm_shutdown(dev); | |
2541 | cp->stop_hw(dev); | |
2542 | pci_dev_put(dev->pcidev); | |
2543 | } | |
2544 | } | |
2545 | ||
2546 | static void cnic_free_dev(struct cnic_dev *dev) | |
2547 | { | |
2548 | int i = 0; | |
2549 | ||
2550 | while ((atomic_read(&dev->ref_count) != 0) && i < 10) { | |
2551 | msleep(100); | |
2552 | i++; | |
2553 | } | |
2554 | if (atomic_read(&dev->ref_count) != 0) | |
2555 | printk(KERN_ERR PFX "%s: Failed waiting for ref count to go" | |
2556 | " to zero.\n", dev->netdev->name); | |
2557 | ||
2558 | printk(KERN_INFO PFX "Removed CNIC device: %s\n", dev->netdev->name); | |
2559 | dev_put(dev->netdev); | |
2560 | kfree(dev); | |
2561 | } | |
2562 | ||
2563 | static struct cnic_dev *cnic_alloc_dev(struct net_device *dev, | |
2564 | struct pci_dev *pdev) | |
2565 | { | |
2566 | struct cnic_dev *cdev; | |
2567 | struct cnic_local *cp; | |
2568 | int alloc_size; | |
2569 | ||
2570 | alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local); | |
2571 | ||
2572 | cdev = kzalloc(alloc_size , GFP_KERNEL); | |
2573 | if (cdev == NULL) { | |
2574 | printk(KERN_ERR PFX "%s: allocate dev struct failure\n", | |
2575 | dev->name); | |
2576 | return NULL; | |
2577 | } | |
2578 | ||
2579 | cdev->netdev = dev; | |
2580 | cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev); | |
2581 | cdev->register_device = cnic_register_device; | |
2582 | cdev->unregister_device = cnic_unregister_device; | |
2583 | cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv; | |
2584 | ||
2585 | cp = cdev->cnic_priv; | |
2586 | cp->dev = cdev; | |
2587 | cp->uio_dev = -1; | |
2588 | cp->l2_single_buf_size = 0x400; | |
2589 | cp->l2_rx_ring_size = 3; | |
2590 | ||
2591 | spin_lock_init(&cp->cnic_ulp_lock); | |
2592 | ||
2593 | printk(KERN_INFO PFX "Added CNIC device: %s\n", dev->name); | |
2594 | ||
2595 | return cdev; | |
2596 | } | |
2597 | ||
2598 | static struct cnic_dev *init_bnx2_cnic(struct net_device *dev) | |
2599 | { | |
2600 | struct pci_dev *pdev; | |
2601 | struct cnic_dev *cdev; | |
2602 | struct cnic_local *cp; | |
2603 | struct cnic_eth_dev *ethdev = NULL; | |
e2ee3616 | 2604 | struct cnic_eth_dev *(*probe)(struct net_device *) = NULL; |
a4636960 | 2605 | |
e2ee3616 | 2606 | probe = symbol_get(bnx2_cnic_probe); |
a4636960 MC |
2607 | if (probe) { |
2608 | ethdev = (*probe)(dev); | |
64c64608 | 2609 | symbol_put(bnx2_cnic_probe); |
a4636960 MC |
2610 | } |
2611 | if (!ethdev) | |
2612 | return NULL; | |
2613 | ||
2614 | pdev = ethdev->pdev; | |
2615 | if (!pdev) | |
2616 | return NULL; | |
2617 | ||
2618 | dev_hold(dev); | |
2619 | pci_dev_get(pdev); | |
2620 | if (pdev->device == PCI_DEVICE_ID_NX2_5709 || | |
2621 | pdev->device == PCI_DEVICE_ID_NX2_5709S) { | |
2622 | u8 rev; | |
2623 | ||
2624 | pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); | |
2625 | if (rev < 0x10) { | |
2626 | pci_dev_put(pdev); | |
2627 | goto cnic_err; | |
2628 | } | |
2629 | } | |
2630 | pci_dev_put(pdev); | |
2631 | ||
2632 | cdev = cnic_alloc_dev(dev, pdev); | |
2633 | if (cdev == NULL) | |
2634 | goto cnic_err; | |
2635 | ||
2636 | set_bit(CNIC_F_BNX2_CLASS, &cdev->flags); | |
2637 | cdev->submit_kwqes = cnic_submit_bnx2_kwqes; | |
2638 | ||
2639 | cp = cdev->cnic_priv; | |
2640 | cp->ethdev = ethdev; | |
2641 | cdev->pcidev = pdev; | |
2642 | ||
2643 | cp->cnic_ops = &cnic_bnx2_ops; | |
2644 | cp->start_hw = cnic_start_bnx2_hw; | |
2645 | cp->stop_hw = cnic_stop_bnx2_hw; | |
2646 | cp->setup_pgtbl = cnic_setup_page_tbl; | |
2647 | cp->alloc_resc = cnic_alloc_bnx2_resc; | |
2648 | cp->free_resc = cnic_free_resc; | |
2649 | cp->start_cm = cnic_cm_init_bnx2_hw; | |
2650 | cp->stop_cm = cnic_cm_stop_bnx2_hw; | |
2651 | cp->enable_int = cnic_enable_bnx2_int; | |
2652 | cp->disable_int_sync = cnic_disable_bnx2_int_sync; | |
2653 | cp->close_conn = cnic_close_bnx2_conn; | |
2654 | cp->next_idx = cnic_bnx2_next_idx; | |
2655 | cp->hw_idx = cnic_bnx2_hw_idx; | |
2656 | return cdev; | |
2657 | ||
2658 | cnic_err: | |
2659 | dev_put(dev); | |
2660 | return NULL; | |
2661 | } | |
2662 | ||
2663 | static struct cnic_dev *is_cnic_dev(struct net_device *dev) | |
2664 | { | |
2665 | struct ethtool_drvinfo drvinfo; | |
2666 | struct cnic_dev *cdev = NULL; | |
2667 | ||
2668 | if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) { | |
2669 | memset(&drvinfo, 0, sizeof(drvinfo)); | |
2670 | dev->ethtool_ops->get_drvinfo(dev, &drvinfo); | |
2671 | ||
2672 | if (!strcmp(drvinfo.driver, "bnx2")) | |
2673 | cdev = init_bnx2_cnic(dev); | |
2674 | if (cdev) { | |
2675 | write_lock(&cnic_dev_lock); | |
2676 | list_add(&cdev->list, &cnic_dev_list); | |
2677 | write_unlock(&cnic_dev_lock); | |
2678 | } | |
2679 | } | |
2680 | return cdev; | |
2681 | } | |
2682 | ||
2683 | /** | |
2684 | * netdev event handler | |
2685 | */ | |
2686 | static int cnic_netdev_event(struct notifier_block *this, unsigned long event, | |
2687 | void *ptr) | |
2688 | { | |
2689 | struct net_device *netdev = ptr; | |
2690 | struct cnic_dev *dev; | |
2691 | int if_type; | |
2692 | int new_dev = 0; | |
2693 | ||
2694 | dev = cnic_from_netdev(netdev); | |
2695 | ||
2696 | if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) { | |
2697 | /* Check for the hot-plug device */ | |
2698 | dev = is_cnic_dev(netdev); | |
2699 | if (dev) { | |
2700 | new_dev = 1; | |
2701 | cnic_hold(dev); | |
2702 | } | |
2703 | } | |
2704 | if (dev) { | |
2705 | struct cnic_local *cp = dev->cnic_priv; | |
2706 | ||
2707 | if (new_dev) | |
2708 | cnic_ulp_init(dev); | |
2709 | else if (event == NETDEV_UNREGISTER) | |
2710 | cnic_ulp_exit(dev); | |
2711 | else if (event == NETDEV_UP) { | |
a3059b12 MC |
2712 | if (cnic_register_netdev(dev) != 0) { |
2713 | cnic_put(dev); | |
2714 | goto done; | |
2715 | } | |
a4636960 MC |
2716 | if (!cnic_start_hw(dev)) |
2717 | cnic_ulp_start(dev); | |
a4636960 MC |
2718 | } |
2719 | ||
2720 | rcu_read_lock(); | |
2721 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { | |
2722 | struct cnic_ulp_ops *ulp_ops; | |
2723 | void *ctx; | |
2724 | ||
2725 | ulp_ops = rcu_dereference(cp->ulp_ops[if_type]); | |
2726 | if (!ulp_ops || !ulp_ops->indicate_netevent) | |
2727 | continue; | |
2728 | ||
2729 | ctx = cp->ulp_handle[if_type]; | |
2730 | ||
2731 | ulp_ops->indicate_netevent(ctx, event); | |
2732 | } | |
2733 | rcu_read_unlock(); | |
2734 | ||
2735 | if (event == NETDEV_GOING_DOWN) { | |
a4636960 MC |
2736 | cnic_ulp_stop(dev); |
2737 | cnic_stop_hw(dev); | |
a3059b12 | 2738 | cnic_unregister_netdev(dev); |
a4636960 MC |
2739 | } else if (event == NETDEV_UNREGISTER) { |
2740 | write_lock(&cnic_dev_lock); | |
2741 | list_del_init(&dev->list); | |
2742 | write_unlock(&cnic_dev_lock); | |
2743 | ||
2744 | cnic_put(dev); | |
2745 | cnic_free_dev(dev); | |
2746 | goto done; | |
2747 | } | |
2748 | cnic_put(dev); | |
2749 | } | |
2750 | done: | |
2751 | return NOTIFY_DONE; | |
2752 | } | |
2753 | ||
2754 | static struct notifier_block cnic_netdev_notifier = { | |
2755 | .notifier_call = cnic_netdev_event | |
2756 | }; | |
2757 | ||
2758 | static void cnic_release(void) | |
2759 | { | |
2760 | struct cnic_dev *dev; | |
2761 | ||
2762 | while (!list_empty(&cnic_dev_list)) { | |
2763 | dev = list_entry(cnic_dev_list.next, struct cnic_dev, list); | |
2764 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { | |
2765 | cnic_ulp_stop(dev); | |
2766 | cnic_stop_hw(dev); | |
2767 | } | |
2768 | ||
2769 | cnic_ulp_exit(dev); | |
a3059b12 | 2770 | cnic_unregister_netdev(dev); |
a4636960 MC |
2771 | list_del_init(&dev->list); |
2772 | cnic_free_dev(dev); | |
2773 | } | |
2774 | } | |
2775 | ||
2776 | static int __init cnic_init(void) | |
2777 | { | |
2778 | int rc = 0; | |
2779 | ||
2780 | printk(KERN_INFO "%s", version); | |
2781 | ||
2782 | rc = register_netdevice_notifier(&cnic_netdev_notifier); | |
2783 | if (rc) { | |
2784 | cnic_release(); | |
2785 | return rc; | |
2786 | } | |
2787 | ||
2788 | return 0; | |
2789 | } | |
2790 | ||
2791 | static void __exit cnic_exit(void) | |
2792 | { | |
2793 | unregister_netdevice_notifier(&cnic_netdev_notifier); | |
2794 | cnic_release(); | |
2795 | return; | |
2796 | } | |
2797 | ||
2798 | module_init(cnic_init); | |
2799 | module_exit(cnic_exit); |