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1da177e4 LT |
1 | /* |
2 | * ipmi_msghandler.c | |
3 | * | |
4 | * Incoming and outgoing message routing for an IPMI interface. | |
5 | * | |
6 | * Author: MontaVista Software, Inc. | |
7 | * Corey Minyard <minyard@mvista.com> | |
8 | * source@mvista.com | |
9 | * | |
10 | * Copyright 2002 MontaVista Software Inc. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | * | |
18 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
19 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
20 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
23 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS | |
24 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
26 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
27 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
28 | * | |
29 | * You should have received a copy of the GNU General Public License along | |
30 | * with this program; if not, write to the Free Software Foundation, Inc., | |
31 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
32 | */ | |
33 | ||
34 | #include <linux/config.h> | |
35 | #include <linux/module.h> | |
36 | #include <linux/errno.h> | |
37 | #include <asm/system.h> | |
38 | #include <linux/sched.h> | |
39 | #include <linux/poll.h> | |
40 | #include <linux/spinlock.h> | |
d6dfd131 | 41 | #include <linux/mutex.h> |
1da177e4 LT |
42 | #include <linux/slab.h> |
43 | #include <linux/ipmi.h> | |
44 | #include <linux/ipmi_smi.h> | |
45 | #include <linux/notifier.h> | |
46 | #include <linux/init.h> | |
47 | #include <linux/proc_fs.h> | |
393d2cc3 | 48 | #include <linux/rcupdate.h> |
1da177e4 LT |
49 | |
50 | #define PFX "IPMI message handler: " | |
1fdd75bd | 51 | |
a23f9a3c | 52 | #define IPMI_DRIVER_VERSION "39.0" |
1da177e4 LT |
53 | |
54 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void); | |
55 | static int ipmi_init_msghandler(void); | |
56 | ||
57 | static int initialized = 0; | |
58 | ||
3b625943 CM |
59 | #ifdef CONFIG_PROC_FS |
60 | struct proc_dir_entry *proc_ipmi_root = NULL; | |
be4f1bb2 | 61 | EXPORT_SYMBOL(proc_ipmi_root); |
3b625943 | 62 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
63 | |
64 | #define MAX_EVENTS_IN_QUEUE 25 | |
65 | ||
66 | /* Don't let a message sit in a queue forever, always time it with at lest | |
67 | the max message timer. This is in milliseconds. */ | |
68 | #define MAX_MSG_TIMEOUT 60000 | |
69 | ||
393d2cc3 CM |
70 | |
71 | /* | |
72 | * The main "user" data structure. | |
73 | */ | |
1da177e4 LT |
74 | struct ipmi_user |
75 | { | |
76 | struct list_head link; | |
77 | ||
393d2cc3 CM |
78 | /* Set to "0" when the user is destroyed. */ |
79 | int valid; | |
80 | ||
81 | struct kref refcount; | |
82 | ||
1da177e4 LT |
83 | /* The upper layer that handles receive messages. */ |
84 | struct ipmi_user_hndl *handler; | |
85 | void *handler_data; | |
86 | ||
87 | /* The interface this user is bound to. */ | |
88 | ipmi_smi_t intf; | |
89 | ||
90 | /* Does this interface receive IPMI events? */ | |
91 | int gets_events; | |
92 | }; | |
93 | ||
94 | struct cmd_rcvr | |
95 | { | |
96 | struct list_head link; | |
97 | ||
98 | ipmi_user_t user; | |
99 | unsigned char netfn; | |
100 | unsigned char cmd; | |
393d2cc3 CM |
101 | |
102 | /* | |
103 | * This is used to form a linked lised during mass deletion. | |
104 | * Since this is in an RCU list, we cannot use the link above | |
105 | * or change any data until the RCU period completes. So we | |
106 | * use this next variable during mass deletion so we can have | |
107 | * a list and don't have to wait and restart the search on | |
108 | * every individual deletion of a command. */ | |
109 | struct cmd_rcvr *next; | |
1da177e4 LT |
110 | }; |
111 | ||
112 | struct seq_table | |
113 | { | |
114 | unsigned int inuse : 1; | |
115 | unsigned int broadcast : 1; | |
116 | ||
117 | unsigned long timeout; | |
118 | unsigned long orig_timeout; | |
119 | unsigned int retries_left; | |
120 | ||
121 | /* To verify on an incoming send message response that this is | |
122 | the message that the response is for, we keep a sequence id | |
123 | and increment it every time we send a message. */ | |
124 | long seqid; | |
125 | ||
126 | /* This is held so we can properly respond to the message on a | |
127 | timeout, and it is used to hold the temporary data for | |
128 | retransmission, too. */ | |
129 | struct ipmi_recv_msg *recv_msg; | |
130 | }; | |
131 | ||
132 | /* Store the information in a msgid (long) to allow us to find a | |
133 | sequence table entry from the msgid. */ | |
134 | #define STORE_SEQ_IN_MSGID(seq, seqid) (((seq&0xff)<<26) | (seqid&0x3ffffff)) | |
135 | ||
136 | #define GET_SEQ_FROM_MSGID(msgid, seq, seqid) \ | |
137 | do { \ | |
138 | seq = ((msgid >> 26) & 0x3f); \ | |
139 | seqid = (msgid & 0x3fffff); \ | |
e8b33617 | 140 | } while (0) |
1da177e4 LT |
141 | |
142 | #define NEXT_SEQID(seqid) (((seqid) + 1) & 0x3fffff) | |
143 | ||
144 | struct ipmi_channel | |
145 | { | |
146 | unsigned char medium; | |
147 | unsigned char protocol; | |
c14979b9 CM |
148 | |
149 | /* My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, | |
150 | but may be changed by the user. */ | |
151 | unsigned char address; | |
152 | ||
153 | /* My LUN. This should generally stay the SMS LUN, but just in | |
154 | case... */ | |
155 | unsigned char lun; | |
1da177e4 LT |
156 | }; |
157 | ||
3b625943 | 158 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
159 | struct ipmi_proc_entry |
160 | { | |
161 | char *name; | |
162 | struct ipmi_proc_entry *next; | |
163 | }; | |
3b625943 | 164 | #endif |
1da177e4 | 165 | |
50c812b2 CM |
166 | struct bmc_device |
167 | { | |
168 | struct platform_device *dev; | |
169 | struct ipmi_device_id id; | |
170 | unsigned char guid[16]; | |
171 | int guid_set; | |
172 | ||
173 | struct kref refcount; | |
174 | ||
175 | /* bmc device attributes */ | |
176 | struct device_attribute device_id_attr; | |
177 | struct device_attribute provides_dev_sdrs_attr; | |
178 | struct device_attribute revision_attr; | |
179 | struct device_attribute firmware_rev_attr; | |
180 | struct device_attribute version_attr; | |
181 | struct device_attribute add_dev_support_attr; | |
182 | struct device_attribute manufacturer_id_attr; | |
183 | struct device_attribute product_id_attr; | |
184 | struct device_attribute guid_attr; | |
185 | struct device_attribute aux_firmware_rev_attr; | |
186 | }; | |
187 | ||
1da177e4 | 188 | #define IPMI_IPMB_NUM_SEQ 64 |
c14979b9 | 189 | #define IPMI_MAX_CHANNELS 16 |
1da177e4 LT |
190 | struct ipmi_smi |
191 | { | |
192 | /* What interface number are we? */ | |
193 | int intf_num; | |
194 | ||
393d2cc3 CM |
195 | struct kref refcount; |
196 | ||
197 | /* The list of upper layers that are using me. seq_lock | |
198 | * protects this. */ | |
199 | struct list_head users; | |
1da177e4 LT |
200 | |
201 | /* Used for wake ups at startup. */ | |
202 | wait_queue_head_t waitq; | |
203 | ||
50c812b2 CM |
204 | struct bmc_device *bmc; |
205 | char *my_dev_name; | |
1da177e4 LT |
206 | |
207 | /* This is the lower-layer's sender routine. */ | |
208 | struct ipmi_smi_handlers *handlers; | |
209 | void *send_info; | |
210 | ||
3b625943 | 211 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
212 | /* A list of proc entries for this interface. This does not |
213 | need a lock, only one thread creates it and only one thread | |
214 | destroys it. */ | |
3b625943 | 215 | spinlock_t proc_entry_lock; |
1da177e4 | 216 | struct ipmi_proc_entry *proc_entries; |
3b625943 | 217 | #endif |
1da177e4 | 218 | |
50c812b2 CM |
219 | /* Driver-model device for the system interface. */ |
220 | struct device *si_dev; | |
221 | ||
1da177e4 LT |
222 | /* A table of sequence numbers for this interface. We use the |
223 | sequence numbers for IPMB messages that go out of the | |
224 | interface to match them up with their responses. A routine | |
225 | is called periodically to time the items in this list. */ | |
226 | spinlock_t seq_lock; | |
227 | struct seq_table seq_table[IPMI_IPMB_NUM_SEQ]; | |
228 | int curr_seq; | |
229 | ||
230 | /* Messages that were delayed for some reason (out of memory, | |
231 | for instance), will go in here to be processed later in a | |
232 | periodic timer interrupt. */ | |
233 | spinlock_t waiting_msgs_lock; | |
234 | struct list_head waiting_msgs; | |
235 | ||
236 | /* The list of command receivers that are registered for commands | |
237 | on this interface. */ | |
d6dfd131 | 238 | struct mutex cmd_rcvrs_mutex; |
1da177e4 LT |
239 | struct list_head cmd_rcvrs; |
240 | ||
241 | /* Events that were queues because no one was there to receive | |
242 | them. */ | |
243 | spinlock_t events_lock; /* For dealing with event stuff. */ | |
244 | struct list_head waiting_events; | |
245 | unsigned int waiting_events_count; /* How many events in queue? */ | |
246 | ||
1da177e4 LT |
247 | /* The event receiver for my BMC, only really used at panic |
248 | shutdown as a place to store this. */ | |
249 | unsigned char event_receiver; | |
250 | unsigned char event_receiver_lun; | |
251 | unsigned char local_sel_device; | |
252 | unsigned char local_event_generator; | |
253 | ||
254 | /* A cheap hack, if this is non-null and a message to an | |
255 | interface comes in with a NULL user, call this routine with | |
256 | it. Note that the message will still be freed by the | |
257 | caller. This only works on the system interface. */ | |
56a55ec6 | 258 | void (*null_user_handler)(ipmi_smi_t intf, struct ipmi_recv_msg *msg); |
1da177e4 LT |
259 | |
260 | /* When we are scanning the channels for an SMI, this will | |
261 | tell which channel we are scanning. */ | |
262 | int curr_channel; | |
263 | ||
264 | /* Channel information */ | |
265 | struct ipmi_channel channels[IPMI_MAX_CHANNELS]; | |
266 | ||
267 | /* Proc FS stuff. */ | |
268 | struct proc_dir_entry *proc_dir; | |
269 | char proc_dir_name[10]; | |
270 | ||
271 | spinlock_t counter_lock; /* For making counters atomic. */ | |
272 | ||
273 | /* Commands we got that were invalid. */ | |
274 | unsigned int sent_invalid_commands; | |
275 | ||
276 | /* Commands we sent to the MC. */ | |
277 | unsigned int sent_local_commands; | |
278 | /* Responses from the MC that were delivered to a user. */ | |
279 | unsigned int handled_local_responses; | |
280 | /* Responses from the MC that were not delivered to a user. */ | |
281 | unsigned int unhandled_local_responses; | |
282 | ||
283 | /* Commands we sent out to the IPMB bus. */ | |
284 | unsigned int sent_ipmb_commands; | |
285 | /* Commands sent on the IPMB that had errors on the SEND CMD */ | |
286 | unsigned int sent_ipmb_command_errs; | |
287 | /* Each retransmit increments this count. */ | |
288 | unsigned int retransmitted_ipmb_commands; | |
289 | /* When a message times out (runs out of retransmits) this is | |
290 | incremented. */ | |
291 | unsigned int timed_out_ipmb_commands; | |
292 | ||
293 | /* This is like above, but for broadcasts. Broadcasts are | |
294 | *not* included in the above count (they are expected to | |
295 | time out). */ | |
296 | unsigned int timed_out_ipmb_broadcasts; | |
297 | ||
298 | /* Responses I have sent to the IPMB bus. */ | |
299 | unsigned int sent_ipmb_responses; | |
300 | ||
301 | /* The response was delivered to the user. */ | |
302 | unsigned int handled_ipmb_responses; | |
303 | /* The response had invalid data in it. */ | |
304 | unsigned int invalid_ipmb_responses; | |
305 | /* The response didn't have anyone waiting for it. */ | |
306 | unsigned int unhandled_ipmb_responses; | |
307 | ||
308 | /* Commands we sent out to the IPMB bus. */ | |
309 | unsigned int sent_lan_commands; | |
310 | /* Commands sent on the IPMB that had errors on the SEND CMD */ | |
311 | unsigned int sent_lan_command_errs; | |
312 | /* Each retransmit increments this count. */ | |
313 | unsigned int retransmitted_lan_commands; | |
314 | /* When a message times out (runs out of retransmits) this is | |
315 | incremented. */ | |
316 | unsigned int timed_out_lan_commands; | |
317 | ||
318 | /* Responses I have sent to the IPMB bus. */ | |
319 | unsigned int sent_lan_responses; | |
320 | ||
321 | /* The response was delivered to the user. */ | |
322 | unsigned int handled_lan_responses; | |
323 | /* The response had invalid data in it. */ | |
324 | unsigned int invalid_lan_responses; | |
325 | /* The response didn't have anyone waiting for it. */ | |
326 | unsigned int unhandled_lan_responses; | |
327 | ||
328 | /* The command was delivered to the user. */ | |
329 | unsigned int handled_commands; | |
330 | /* The command had invalid data in it. */ | |
331 | unsigned int invalid_commands; | |
332 | /* The command didn't have anyone waiting for it. */ | |
333 | unsigned int unhandled_commands; | |
334 | ||
335 | /* Invalid data in an event. */ | |
336 | unsigned int invalid_events; | |
337 | /* Events that were received with the proper format. */ | |
338 | unsigned int events; | |
339 | }; | |
50c812b2 | 340 | #define to_si_intf_from_dev(device) container_of(device, struct ipmi_smi, dev) |
1da177e4 | 341 | |
393d2cc3 CM |
342 | /* Used to mark an interface entry that cannot be used but is not a |
343 | * free entry, either, primarily used at creation and deletion time so | |
344 | * a slot doesn't get reused too quickly. */ | |
345 | #define IPMI_INVALID_INTERFACE_ENTRY ((ipmi_smi_t) ((long) 1)) | |
346 | #define IPMI_INVALID_INTERFACE(i) (((i) == NULL) \ | |
347 | || (i == IPMI_INVALID_INTERFACE_ENTRY)) | |
348 | ||
50c812b2 CM |
349 | /** |
350 | * The driver model view of the IPMI messaging driver. | |
351 | */ | |
352 | static struct device_driver ipmidriver = { | |
353 | .name = "ipmi", | |
354 | .bus = &platform_bus_type | |
355 | }; | |
356 | static DEFINE_MUTEX(ipmidriver_mutex); | |
357 | ||
1da177e4 LT |
358 | #define MAX_IPMI_INTERFACES 4 |
359 | static ipmi_smi_t ipmi_interfaces[MAX_IPMI_INTERFACES]; | |
360 | ||
393d2cc3 | 361 | /* Directly protects the ipmi_interfaces data structure. */ |
1da177e4 LT |
362 | static DEFINE_SPINLOCK(interfaces_lock); |
363 | ||
364 | /* List of watchers that want to know when smi's are added and | |
365 | deleted. */ | |
366 | static struct list_head smi_watchers = LIST_HEAD_INIT(smi_watchers); | |
367 | static DECLARE_RWSEM(smi_watchers_sem); | |
368 | ||
393d2cc3 CM |
369 | |
370 | static void free_recv_msg_list(struct list_head *q) | |
371 | { | |
372 | struct ipmi_recv_msg *msg, *msg2; | |
373 | ||
374 | list_for_each_entry_safe(msg, msg2, q, link) { | |
375 | list_del(&msg->link); | |
376 | ipmi_free_recv_msg(msg); | |
377 | } | |
378 | } | |
379 | ||
380 | static void clean_up_interface_data(ipmi_smi_t intf) | |
381 | { | |
382 | int i; | |
383 | struct cmd_rcvr *rcvr, *rcvr2; | |
393d2cc3 CM |
384 | struct list_head list; |
385 | ||
386 | free_recv_msg_list(&intf->waiting_msgs); | |
387 | free_recv_msg_list(&intf->waiting_events); | |
388 | ||
389 | /* Wholesale remove all the entries from the list in the | |
390 | * interface and wait for RCU to know that none are in use. */ | |
d6dfd131 | 391 | mutex_lock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
392 | list_add_rcu(&list, &intf->cmd_rcvrs); |
393 | list_del_rcu(&intf->cmd_rcvrs); | |
d6dfd131 | 394 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
395 | synchronize_rcu(); |
396 | ||
397 | list_for_each_entry_safe(rcvr, rcvr2, &list, link) | |
398 | kfree(rcvr); | |
399 | ||
400 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { | |
401 | if ((intf->seq_table[i].inuse) | |
402 | && (intf->seq_table[i].recv_msg)) | |
403 | { | |
404 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); | |
405 | } | |
406 | } | |
407 | } | |
408 | ||
409 | static void intf_free(struct kref *ref) | |
410 | { | |
411 | ipmi_smi_t intf = container_of(ref, struct ipmi_smi, refcount); | |
412 | ||
413 | clean_up_interface_data(intf); | |
414 | kfree(intf); | |
415 | } | |
416 | ||
1da177e4 LT |
417 | int ipmi_smi_watcher_register(struct ipmi_smi_watcher *watcher) |
418 | { | |
393d2cc3 CM |
419 | int i; |
420 | unsigned long flags; | |
1da177e4 | 421 | |
1da177e4 LT |
422 | down_write(&smi_watchers_sem); |
423 | list_add(&(watcher->link), &smi_watchers); | |
393d2cc3 CM |
424 | up_write(&smi_watchers_sem); |
425 | spin_lock_irqsave(&interfaces_lock, flags); | |
e8b33617 | 426 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
393d2cc3 CM |
427 | ipmi_smi_t intf = ipmi_interfaces[i]; |
428 | if (IPMI_INVALID_INTERFACE(intf)) | |
429 | continue; | |
430 | spin_unlock_irqrestore(&interfaces_lock, flags); | |
50c812b2 | 431 | watcher->new_smi(i, intf->si_dev); |
393d2cc3 | 432 | spin_lock_irqsave(&interfaces_lock, flags); |
1da177e4 | 433 | } |
393d2cc3 | 434 | spin_unlock_irqrestore(&interfaces_lock, flags); |
1da177e4 LT |
435 | return 0; |
436 | } | |
437 | ||
438 | int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher) | |
439 | { | |
440 | down_write(&smi_watchers_sem); | |
441 | list_del(&(watcher->link)); | |
442 | up_write(&smi_watchers_sem); | |
443 | return 0; | |
444 | } | |
445 | ||
446 | static void | |
50c812b2 | 447 | call_smi_watchers(int i, struct device *dev) |
1da177e4 LT |
448 | { |
449 | struct ipmi_smi_watcher *w; | |
450 | ||
451 | down_read(&smi_watchers_sem); | |
452 | list_for_each_entry(w, &smi_watchers, link) { | |
453 | if (try_module_get(w->owner)) { | |
50c812b2 | 454 | w->new_smi(i, dev); |
1da177e4 LT |
455 | module_put(w->owner); |
456 | } | |
457 | } | |
458 | up_read(&smi_watchers_sem); | |
459 | } | |
460 | ||
461 | static int | |
462 | ipmi_addr_equal(struct ipmi_addr *addr1, struct ipmi_addr *addr2) | |
463 | { | |
464 | if (addr1->addr_type != addr2->addr_type) | |
465 | return 0; | |
466 | ||
467 | if (addr1->channel != addr2->channel) | |
468 | return 0; | |
469 | ||
470 | if (addr1->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
471 | struct ipmi_system_interface_addr *smi_addr1 | |
472 | = (struct ipmi_system_interface_addr *) addr1; | |
473 | struct ipmi_system_interface_addr *smi_addr2 | |
474 | = (struct ipmi_system_interface_addr *) addr2; | |
475 | return (smi_addr1->lun == smi_addr2->lun); | |
476 | } | |
477 | ||
478 | if ((addr1->addr_type == IPMI_IPMB_ADDR_TYPE) | |
479 | || (addr1->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) | |
480 | { | |
481 | struct ipmi_ipmb_addr *ipmb_addr1 | |
482 | = (struct ipmi_ipmb_addr *) addr1; | |
483 | struct ipmi_ipmb_addr *ipmb_addr2 | |
484 | = (struct ipmi_ipmb_addr *) addr2; | |
485 | ||
486 | return ((ipmb_addr1->slave_addr == ipmb_addr2->slave_addr) | |
487 | && (ipmb_addr1->lun == ipmb_addr2->lun)); | |
488 | } | |
489 | ||
490 | if (addr1->addr_type == IPMI_LAN_ADDR_TYPE) { | |
491 | struct ipmi_lan_addr *lan_addr1 | |
492 | = (struct ipmi_lan_addr *) addr1; | |
493 | struct ipmi_lan_addr *lan_addr2 | |
494 | = (struct ipmi_lan_addr *) addr2; | |
495 | ||
496 | return ((lan_addr1->remote_SWID == lan_addr2->remote_SWID) | |
497 | && (lan_addr1->local_SWID == lan_addr2->local_SWID) | |
498 | && (lan_addr1->session_handle | |
499 | == lan_addr2->session_handle) | |
500 | && (lan_addr1->lun == lan_addr2->lun)); | |
501 | } | |
502 | ||
503 | return 1; | |
504 | } | |
505 | ||
506 | int ipmi_validate_addr(struct ipmi_addr *addr, int len) | |
507 | { | |
508 | if (len < sizeof(struct ipmi_system_interface_addr)) { | |
509 | return -EINVAL; | |
510 | } | |
511 | ||
512 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
513 | if (addr->channel != IPMI_BMC_CHANNEL) | |
514 | return -EINVAL; | |
515 | return 0; | |
516 | } | |
517 | ||
518 | if ((addr->channel == IPMI_BMC_CHANNEL) | |
12fc1d7b | 519 | || (addr->channel >= IPMI_MAX_CHANNELS) |
1da177e4 LT |
520 | || (addr->channel < 0)) |
521 | return -EINVAL; | |
522 | ||
523 | if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE) | |
524 | || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) | |
525 | { | |
526 | if (len < sizeof(struct ipmi_ipmb_addr)) { | |
527 | return -EINVAL; | |
528 | } | |
529 | return 0; | |
530 | } | |
531 | ||
532 | if (addr->addr_type == IPMI_LAN_ADDR_TYPE) { | |
533 | if (len < sizeof(struct ipmi_lan_addr)) { | |
534 | return -EINVAL; | |
535 | } | |
536 | return 0; | |
537 | } | |
538 | ||
539 | return -EINVAL; | |
540 | } | |
541 | ||
542 | unsigned int ipmi_addr_length(int addr_type) | |
543 | { | |
544 | if (addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
545 | return sizeof(struct ipmi_system_interface_addr); | |
546 | ||
547 | if ((addr_type == IPMI_IPMB_ADDR_TYPE) | |
548 | || (addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) | |
549 | { | |
550 | return sizeof(struct ipmi_ipmb_addr); | |
551 | } | |
552 | ||
553 | if (addr_type == IPMI_LAN_ADDR_TYPE) | |
554 | return sizeof(struct ipmi_lan_addr); | |
555 | ||
556 | return 0; | |
557 | } | |
558 | ||
559 | static void deliver_response(struct ipmi_recv_msg *msg) | |
560 | { | |
8a3628d5 | 561 | if (!msg->user) { |
56a55ec6 CM |
562 | ipmi_smi_t intf = msg->user_msg_data; |
563 | unsigned long flags; | |
564 | ||
565 | /* Special handling for NULL users. */ | |
566 | if (intf->null_user_handler) { | |
567 | intf->null_user_handler(intf, msg); | |
568 | spin_lock_irqsave(&intf->counter_lock, flags); | |
569 | intf->handled_local_responses++; | |
570 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
571 | } else { | |
572 | /* No handler, so give up. */ | |
573 | spin_lock_irqsave(&intf->counter_lock, flags); | |
574 | intf->unhandled_local_responses++; | |
575 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
576 | } | |
577 | ipmi_free_recv_msg(msg); | |
578 | } else { | |
393d2cc3 CM |
579 | ipmi_user_t user = msg->user; |
580 | user->handler->ipmi_recv_hndl(msg, user->handler_data); | |
56a55ec6 | 581 | } |
1da177e4 LT |
582 | } |
583 | ||
584 | /* Find the next sequence number not being used and add the given | |
585 | message with the given timeout to the sequence table. This must be | |
586 | called with the interface's seq_lock held. */ | |
587 | static int intf_next_seq(ipmi_smi_t intf, | |
588 | struct ipmi_recv_msg *recv_msg, | |
589 | unsigned long timeout, | |
590 | int retries, | |
591 | int broadcast, | |
592 | unsigned char *seq, | |
593 | long *seqid) | |
594 | { | |
595 | int rv = 0; | |
596 | unsigned int i; | |
597 | ||
e8b33617 | 598 | for (i = intf->curr_seq; |
1da177e4 | 599 | (i+1)%IPMI_IPMB_NUM_SEQ != intf->curr_seq; |
e8b33617 | 600 | i = (i+1)%IPMI_IPMB_NUM_SEQ) |
1da177e4 | 601 | { |
8a3628d5 | 602 | if (!intf->seq_table[i].inuse) |
1da177e4 LT |
603 | break; |
604 | } | |
605 | ||
8a3628d5 | 606 | if (!intf->seq_table[i].inuse) { |
1da177e4 LT |
607 | intf->seq_table[i].recv_msg = recv_msg; |
608 | ||
609 | /* Start with the maximum timeout, when the send response | |
610 | comes in we will start the real timer. */ | |
611 | intf->seq_table[i].timeout = MAX_MSG_TIMEOUT; | |
612 | intf->seq_table[i].orig_timeout = timeout; | |
613 | intf->seq_table[i].retries_left = retries; | |
614 | intf->seq_table[i].broadcast = broadcast; | |
615 | intf->seq_table[i].inuse = 1; | |
616 | intf->seq_table[i].seqid = NEXT_SEQID(intf->seq_table[i].seqid); | |
617 | *seq = i; | |
618 | *seqid = intf->seq_table[i].seqid; | |
619 | intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ; | |
620 | } else { | |
621 | rv = -EAGAIN; | |
622 | } | |
623 | ||
624 | return rv; | |
625 | } | |
626 | ||
627 | /* Return the receive message for the given sequence number and | |
628 | release the sequence number so it can be reused. Some other data | |
629 | is passed in to be sure the message matches up correctly (to help | |
630 | guard against message coming in after their timeout and the | |
631 | sequence number being reused). */ | |
632 | static int intf_find_seq(ipmi_smi_t intf, | |
633 | unsigned char seq, | |
634 | short channel, | |
635 | unsigned char cmd, | |
636 | unsigned char netfn, | |
637 | struct ipmi_addr *addr, | |
638 | struct ipmi_recv_msg **recv_msg) | |
639 | { | |
640 | int rv = -ENODEV; | |
641 | unsigned long flags; | |
642 | ||
643 | if (seq >= IPMI_IPMB_NUM_SEQ) | |
644 | return -EINVAL; | |
645 | ||
646 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
647 | if (intf->seq_table[seq].inuse) { | |
648 | struct ipmi_recv_msg *msg = intf->seq_table[seq].recv_msg; | |
649 | ||
650 | if ((msg->addr.channel == channel) | |
651 | && (msg->msg.cmd == cmd) | |
652 | && (msg->msg.netfn == netfn) | |
653 | && (ipmi_addr_equal(addr, &(msg->addr)))) | |
654 | { | |
655 | *recv_msg = msg; | |
656 | intf->seq_table[seq].inuse = 0; | |
657 | rv = 0; | |
658 | } | |
659 | } | |
660 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
661 | ||
662 | return rv; | |
663 | } | |
664 | ||
665 | ||
666 | /* Start the timer for a specific sequence table entry. */ | |
667 | static int intf_start_seq_timer(ipmi_smi_t intf, | |
668 | long msgid) | |
669 | { | |
670 | int rv = -ENODEV; | |
671 | unsigned long flags; | |
672 | unsigned char seq; | |
673 | unsigned long seqid; | |
674 | ||
675 | ||
676 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); | |
677 | ||
678 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
679 | /* We do this verification because the user can be deleted | |
680 | while a message is outstanding. */ | |
681 | if ((intf->seq_table[seq].inuse) | |
682 | && (intf->seq_table[seq].seqid == seqid)) | |
683 | { | |
684 | struct seq_table *ent = &(intf->seq_table[seq]); | |
685 | ent->timeout = ent->orig_timeout; | |
686 | rv = 0; | |
687 | } | |
688 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
689 | ||
690 | return rv; | |
691 | } | |
692 | ||
693 | /* Got an error for the send message for a specific sequence number. */ | |
694 | static int intf_err_seq(ipmi_smi_t intf, | |
695 | long msgid, | |
696 | unsigned int err) | |
697 | { | |
698 | int rv = -ENODEV; | |
699 | unsigned long flags; | |
700 | unsigned char seq; | |
701 | unsigned long seqid; | |
702 | struct ipmi_recv_msg *msg = NULL; | |
703 | ||
704 | ||
705 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); | |
706 | ||
707 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
708 | /* We do this verification because the user can be deleted | |
709 | while a message is outstanding. */ | |
710 | if ((intf->seq_table[seq].inuse) | |
711 | && (intf->seq_table[seq].seqid == seqid)) | |
712 | { | |
713 | struct seq_table *ent = &(intf->seq_table[seq]); | |
714 | ||
715 | ent->inuse = 0; | |
716 | msg = ent->recv_msg; | |
717 | rv = 0; | |
718 | } | |
719 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
720 | ||
721 | if (msg) { | |
722 | msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
723 | msg->msg_data[0] = err; | |
724 | msg->msg.netfn |= 1; /* Convert to a response. */ | |
725 | msg->msg.data_len = 1; | |
726 | msg->msg.data = msg->msg_data; | |
727 | deliver_response(msg); | |
728 | } | |
729 | ||
730 | return rv; | |
731 | } | |
732 | ||
733 | ||
734 | int ipmi_create_user(unsigned int if_num, | |
735 | struct ipmi_user_hndl *handler, | |
736 | void *handler_data, | |
737 | ipmi_user_t *user) | |
738 | { | |
739 | unsigned long flags; | |
740 | ipmi_user_t new_user; | |
741 | int rv = 0; | |
742 | ipmi_smi_t intf; | |
743 | ||
744 | /* There is no module usecount here, because it's not | |
745 | required. Since this can only be used by and called from | |
746 | other modules, they will implicitly use this module, and | |
747 | thus this can't be removed unless the other modules are | |
748 | removed. */ | |
749 | ||
750 | if (handler == NULL) | |
751 | return -EINVAL; | |
752 | ||
753 | /* Make sure the driver is actually initialized, this handles | |
754 | problems with initialization order. */ | |
755 | if (!initialized) { | |
756 | rv = ipmi_init_msghandler(); | |
757 | if (rv) | |
758 | return rv; | |
759 | ||
760 | /* The init code doesn't return an error if it was turned | |
761 | off, but it won't initialize. Check that. */ | |
762 | if (!initialized) | |
763 | return -ENODEV; | |
764 | } | |
765 | ||
766 | new_user = kmalloc(sizeof(*new_user), GFP_KERNEL); | |
8a3628d5 | 767 | if (!new_user) |
1da177e4 LT |
768 | return -ENOMEM; |
769 | ||
393d2cc3 CM |
770 | spin_lock_irqsave(&interfaces_lock, flags); |
771 | intf = ipmi_interfaces[if_num]; | |
772 | if ((if_num >= MAX_IPMI_INTERFACES) || IPMI_INVALID_INTERFACE(intf)) { | |
773 | spin_unlock_irqrestore(&interfaces_lock, flags); | |
5c98d29a AB |
774 | rv = -EINVAL; |
775 | goto out_kfree; | |
1da177e4 LT |
776 | } |
777 | ||
393d2cc3 CM |
778 | /* Note that each existing user holds a refcount to the interface. */ |
779 | kref_get(&intf->refcount); | |
780 | spin_unlock_irqrestore(&interfaces_lock, flags); | |
1da177e4 | 781 | |
393d2cc3 | 782 | kref_init(&new_user->refcount); |
1da177e4 LT |
783 | new_user->handler = handler; |
784 | new_user->handler_data = handler_data; | |
785 | new_user->intf = intf; | |
786 | new_user->gets_events = 0; | |
787 | ||
788 | if (!try_module_get(intf->handlers->owner)) { | |
789 | rv = -ENODEV; | |
5c98d29a | 790 | goto out_kref; |
1da177e4 LT |
791 | } |
792 | ||
793 | if (intf->handlers->inc_usecount) { | |
794 | rv = intf->handlers->inc_usecount(intf->send_info); | |
795 | if (rv) { | |
796 | module_put(intf->handlers->owner); | |
5c98d29a | 797 | goto out_kref; |
1da177e4 LT |
798 | } |
799 | } | |
800 | ||
393d2cc3 CM |
801 | new_user->valid = 1; |
802 | spin_lock_irqsave(&intf->seq_lock, flags); | |
803 | list_add_rcu(&new_user->link, &intf->users); | |
804 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
805 | *user = new_user; | |
806 | return 0; | |
1da177e4 | 807 | |
5c98d29a | 808 | out_kref: |
393d2cc3 | 809 | kref_put(&intf->refcount, intf_free); |
5c98d29a AB |
810 | out_kfree: |
811 | kfree(new_user); | |
1da177e4 LT |
812 | return rv; |
813 | } | |
814 | ||
393d2cc3 CM |
815 | static void free_user(struct kref *ref) |
816 | { | |
817 | ipmi_user_t user = container_of(ref, struct ipmi_user, refcount); | |
818 | kfree(user); | |
819 | } | |
820 | ||
821 | int ipmi_destroy_user(ipmi_user_t user) | |
1da177e4 | 822 | { |
393d2cc3 | 823 | ipmi_smi_t intf = user->intf; |
1da177e4 LT |
824 | int i; |
825 | unsigned long flags; | |
393d2cc3 | 826 | struct cmd_rcvr *rcvr; |
393d2cc3 | 827 | struct cmd_rcvr *rcvrs = NULL; |
1da177e4 | 828 | |
8a3628d5 | 829 | user->valid = 0; |
1da177e4 | 830 | |
393d2cc3 CM |
831 | /* Remove the user from the interface's sequence table. */ |
832 | spin_lock_irqsave(&intf->seq_lock, flags); | |
833 | list_del_rcu(&user->link); | |
1da177e4 | 834 | |
e8b33617 | 835 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
393d2cc3 CM |
836 | if (intf->seq_table[i].inuse |
837 | && (intf->seq_table[i].recv_msg->user == user)) | |
1da177e4 | 838 | { |
393d2cc3 | 839 | intf->seq_table[i].inuse = 0; |
1da177e4 LT |
840 | } |
841 | } | |
393d2cc3 CM |
842 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
843 | ||
844 | /* | |
845 | * Remove the user from the command receiver's table. First | |
846 | * we build a list of everything (not using the standard link, | |
847 | * since other things may be using it till we do | |
848 | * synchronize_rcu()) then free everything in that list. | |
849 | */ | |
d6dfd131 | 850 | mutex_lock(&intf->cmd_rcvrs_mutex); |
066bb8d0 | 851 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
1da177e4 | 852 | if (rcvr->user == user) { |
393d2cc3 CM |
853 | list_del_rcu(&rcvr->link); |
854 | rcvr->next = rcvrs; | |
855 | rcvrs = rcvr; | |
1da177e4 LT |
856 | } |
857 | } | |
d6dfd131 | 858 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
859 | synchronize_rcu(); |
860 | while (rcvrs) { | |
861 | rcvr = rcvrs; | |
862 | rcvrs = rcvr->next; | |
863 | kfree(rcvr); | |
864 | } | |
1da177e4 | 865 | |
393d2cc3 CM |
866 | module_put(intf->handlers->owner); |
867 | if (intf->handlers->dec_usecount) | |
868 | intf->handlers->dec_usecount(intf->send_info); | |
1da177e4 | 869 | |
393d2cc3 | 870 | kref_put(&intf->refcount, intf_free); |
1da177e4 | 871 | |
393d2cc3 | 872 | kref_put(&user->refcount, free_user); |
1da177e4 | 873 | |
8a3628d5 | 874 | return 0; |
1da177e4 LT |
875 | } |
876 | ||
877 | void ipmi_get_version(ipmi_user_t user, | |
878 | unsigned char *major, | |
879 | unsigned char *minor) | |
880 | { | |
50c812b2 CM |
881 | *major = ipmi_version_major(&user->intf->bmc->id); |
882 | *minor = ipmi_version_minor(&user->intf->bmc->id); | |
1da177e4 LT |
883 | } |
884 | ||
c14979b9 CM |
885 | int ipmi_set_my_address(ipmi_user_t user, |
886 | unsigned int channel, | |
887 | unsigned char address) | |
1da177e4 | 888 | { |
c14979b9 CM |
889 | if (channel >= IPMI_MAX_CHANNELS) |
890 | return -EINVAL; | |
891 | user->intf->channels[channel].address = address; | |
892 | return 0; | |
1da177e4 LT |
893 | } |
894 | ||
c14979b9 CM |
895 | int ipmi_get_my_address(ipmi_user_t user, |
896 | unsigned int channel, | |
897 | unsigned char *address) | |
1da177e4 | 898 | { |
c14979b9 CM |
899 | if (channel >= IPMI_MAX_CHANNELS) |
900 | return -EINVAL; | |
901 | *address = user->intf->channels[channel].address; | |
902 | return 0; | |
1da177e4 LT |
903 | } |
904 | ||
c14979b9 CM |
905 | int ipmi_set_my_LUN(ipmi_user_t user, |
906 | unsigned int channel, | |
907 | unsigned char LUN) | |
1da177e4 | 908 | { |
c14979b9 CM |
909 | if (channel >= IPMI_MAX_CHANNELS) |
910 | return -EINVAL; | |
911 | user->intf->channels[channel].lun = LUN & 0x3; | |
912 | return 0; | |
1da177e4 LT |
913 | } |
914 | ||
c14979b9 CM |
915 | int ipmi_get_my_LUN(ipmi_user_t user, |
916 | unsigned int channel, | |
917 | unsigned char *address) | |
1da177e4 | 918 | { |
c14979b9 CM |
919 | if (channel >= IPMI_MAX_CHANNELS) |
920 | return -EINVAL; | |
921 | *address = user->intf->channels[channel].lun; | |
922 | return 0; | |
1da177e4 LT |
923 | } |
924 | ||
925 | int ipmi_set_gets_events(ipmi_user_t user, int val) | |
926 | { | |
393d2cc3 CM |
927 | unsigned long flags; |
928 | ipmi_smi_t intf = user->intf; | |
929 | struct ipmi_recv_msg *msg, *msg2; | |
930 | struct list_head msgs; | |
1da177e4 | 931 | |
393d2cc3 CM |
932 | INIT_LIST_HEAD(&msgs); |
933 | ||
934 | spin_lock_irqsave(&intf->events_lock, flags); | |
1da177e4 LT |
935 | user->gets_events = val; |
936 | ||
937 | if (val) { | |
938 | /* Deliver any queued events. */ | |
8a3628d5 CM |
939 | list_for_each_entry_safe(msg, msg2, &intf->waiting_events, |
940 | link) { | |
1da177e4 | 941 | list_del(&msg->link); |
393d2cc3 | 942 | list_add_tail(&msg->link, &msgs); |
1da177e4 | 943 | } |
4791c03d | 944 | intf->waiting_events_count = 0; |
1da177e4 | 945 | } |
393d2cc3 CM |
946 | |
947 | /* Hold the events lock while doing this to preserve order. */ | |
948 | list_for_each_entry_safe(msg, msg2, &msgs, link) { | |
949 | msg->user = user; | |
950 | kref_get(&user->refcount); | |
951 | deliver_response(msg); | |
952 | } | |
953 | ||
954 | spin_unlock_irqrestore(&intf->events_lock, flags); | |
1da177e4 LT |
955 | |
956 | return 0; | |
957 | } | |
958 | ||
393d2cc3 CM |
959 | static struct cmd_rcvr *find_cmd_rcvr(ipmi_smi_t intf, |
960 | unsigned char netfn, | |
961 | unsigned char cmd) | |
962 | { | |
963 | struct cmd_rcvr *rcvr; | |
964 | ||
965 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { | |
966 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd)) | |
967 | return rcvr; | |
968 | } | |
969 | return NULL; | |
970 | } | |
971 | ||
1da177e4 LT |
972 | int ipmi_register_for_cmd(ipmi_user_t user, |
973 | unsigned char netfn, | |
974 | unsigned char cmd) | |
975 | { | |
393d2cc3 CM |
976 | ipmi_smi_t intf = user->intf; |
977 | struct cmd_rcvr *rcvr; | |
978 | struct cmd_rcvr *entry; | |
979 | int rv = 0; | |
1da177e4 LT |
980 | |
981 | ||
982 | rcvr = kmalloc(sizeof(*rcvr), GFP_KERNEL); | |
8a3628d5 | 983 | if (!rcvr) |
1da177e4 | 984 | return -ENOMEM; |
393d2cc3 CM |
985 | rcvr->cmd = cmd; |
986 | rcvr->netfn = netfn; | |
987 | rcvr->user = user; | |
1da177e4 | 988 | |
d6dfd131 | 989 | mutex_lock(&intf->cmd_rcvrs_mutex); |
1da177e4 | 990 | /* Make sure the command/netfn is not already registered. */ |
393d2cc3 CM |
991 | entry = find_cmd_rcvr(intf, netfn, cmd); |
992 | if (entry) { | |
993 | rv = -EBUSY; | |
994 | goto out_unlock; | |
1da177e4 | 995 | } |
877197ef | 996 | |
393d2cc3 | 997 | list_add_rcu(&rcvr->link, &intf->cmd_rcvrs); |
1da177e4 | 998 | |
393d2cc3 | 999 | out_unlock: |
d6dfd131 | 1000 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
1da177e4 LT |
1001 | if (rv) |
1002 | kfree(rcvr); | |
1003 | ||
1004 | return rv; | |
1005 | } | |
1006 | ||
1007 | int ipmi_unregister_for_cmd(ipmi_user_t user, | |
1008 | unsigned char netfn, | |
1009 | unsigned char cmd) | |
1010 | { | |
393d2cc3 CM |
1011 | ipmi_smi_t intf = user->intf; |
1012 | struct cmd_rcvr *rcvr; | |
1da177e4 | 1013 | |
d6dfd131 | 1014 | mutex_lock(&intf->cmd_rcvrs_mutex); |
1da177e4 | 1015 | /* Make sure the command/netfn is not already registered. */ |
393d2cc3 CM |
1016 | rcvr = find_cmd_rcvr(intf, netfn, cmd); |
1017 | if ((rcvr) && (rcvr->user == user)) { | |
1018 | list_del_rcu(&rcvr->link); | |
d6dfd131 | 1019 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
1020 | synchronize_rcu(); |
1021 | kfree(rcvr); | |
1022 | return 0; | |
1023 | } else { | |
d6dfd131 | 1024 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 | 1025 | return -ENOENT; |
1da177e4 | 1026 | } |
1da177e4 LT |
1027 | } |
1028 | ||
1029 | void ipmi_user_set_run_to_completion(ipmi_user_t user, int val) | |
1030 | { | |
393d2cc3 CM |
1031 | ipmi_smi_t intf = user->intf; |
1032 | intf->handlers->set_run_to_completion(intf->send_info, val); | |
1da177e4 LT |
1033 | } |
1034 | ||
1035 | static unsigned char | |
1036 | ipmb_checksum(unsigned char *data, int size) | |
1037 | { | |
1038 | unsigned char csum = 0; | |
1039 | ||
1040 | for (; size > 0; size--, data++) | |
1041 | csum += *data; | |
1042 | ||
1043 | return -csum; | |
1044 | } | |
1045 | ||
1046 | static inline void format_ipmb_msg(struct ipmi_smi_msg *smi_msg, | |
1047 | struct kernel_ipmi_msg *msg, | |
1048 | struct ipmi_ipmb_addr *ipmb_addr, | |
1049 | long msgid, | |
1050 | unsigned char ipmb_seq, | |
1051 | int broadcast, | |
1052 | unsigned char source_address, | |
1053 | unsigned char source_lun) | |
1054 | { | |
1055 | int i = broadcast; | |
1056 | ||
1057 | /* Format the IPMB header data. */ | |
1058 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1059 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1060 | smi_msg->data[2] = ipmb_addr->channel; | |
1061 | if (broadcast) | |
1062 | smi_msg->data[3] = 0; | |
1063 | smi_msg->data[i+3] = ipmb_addr->slave_addr; | |
1064 | smi_msg->data[i+4] = (msg->netfn << 2) | (ipmb_addr->lun & 0x3); | |
1065 | smi_msg->data[i+5] = ipmb_checksum(&(smi_msg->data[i+3]), 2); | |
1066 | smi_msg->data[i+6] = source_address; | |
1067 | smi_msg->data[i+7] = (ipmb_seq << 2) | source_lun; | |
1068 | smi_msg->data[i+8] = msg->cmd; | |
1069 | ||
1070 | /* Now tack on the data to the message. */ | |
1071 | if (msg->data_len > 0) | |
1072 | memcpy(&(smi_msg->data[i+9]), msg->data, | |
1073 | msg->data_len); | |
1074 | smi_msg->data_size = msg->data_len + 9; | |
1075 | ||
1076 | /* Now calculate the checksum and tack it on. */ | |
1077 | smi_msg->data[i+smi_msg->data_size] | |
1078 | = ipmb_checksum(&(smi_msg->data[i+6]), | |
1079 | smi_msg->data_size-6); | |
1080 | ||
1081 | /* Add on the checksum size and the offset from the | |
1082 | broadcast. */ | |
1083 | smi_msg->data_size += 1 + i; | |
1084 | ||
1085 | smi_msg->msgid = msgid; | |
1086 | } | |
1087 | ||
1088 | static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg, | |
1089 | struct kernel_ipmi_msg *msg, | |
1090 | struct ipmi_lan_addr *lan_addr, | |
1091 | long msgid, | |
1092 | unsigned char ipmb_seq, | |
1093 | unsigned char source_lun) | |
1094 | { | |
1095 | /* Format the IPMB header data. */ | |
1096 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1097 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1098 | smi_msg->data[2] = lan_addr->channel; | |
1099 | smi_msg->data[3] = lan_addr->session_handle; | |
1100 | smi_msg->data[4] = lan_addr->remote_SWID; | |
1101 | smi_msg->data[5] = (msg->netfn << 2) | (lan_addr->lun & 0x3); | |
1102 | smi_msg->data[6] = ipmb_checksum(&(smi_msg->data[4]), 2); | |
1103 | smi_msg->data[7] = lan_addr->local_SWID; | |
1104 | smi_msg->data[8] = (ipmb_seq << 2) | source_lun; | |
1105 | smi_msg->data[9] = msg->cmd; | |
1106 | ||
1107 | /* Now tack on the data to the message. */ | |
1108 | if (msg->data_len > 0) | |
1109 | memcpy(&(smi_msg->data[10]), msg->data, | |
1110 | msg->data_len); | |
1111 | smi_msg->data_size = msg->data_len + 10; | |
1112 | ||
1113 | /* Now calculate the checksum and tack it on. */ | |
1114 | smi_msg->data[smi_msg->data_size] | |
1115 | = ipmb_checksum(&(smi_msg->data[7]), | |
1116 | smi_msg->data_size-7); | |
1117 | ||
1118 | /* Add on the checksum size and the offset from the | |
1119 | broadcast. */ | |
1120 | smi_msg->data_size += 1; | |
1121 | ||
1122 | smi_msg->msgid = msgid; | |
1123 | } | |
1124 | ||
1125 | /* Separate from ipmi_request so that the user does not have to be | |
1126 | supplied in certain circumstances (mainly at panic time). If | |
1127 | messages are supplied, they will be freed, even if an error | |
1128 | occurs. */ | |
393d2cc3 CM |
1129 | static int i_ipmi_request(ipmi_user_t user, |
1130 | ipmi_smi_t intf, | |
1131 | struct ipmi_addr *addr, | |
1132 | long msgid, | |
1133 | struct kernel_ipmi_msg *msg, | |
1134 | void *user_msg_data, | |
1135 | void *supplied_smi, | |
1136 | struct ipmi_recv_msg *supplied_recv, | |
1137 | int priority, | |
1138 | unsigned char source_address, | |
1139 | unsigned char source_lun, | |
1140 | int retries, | |
1141 | unsigned int retry_time_ms) | |
1da177e4 LT |
1142 | { |
1143 | int rv = 0; | |
1144 | struct ipmi_smi_msg *smi_msg; | |
1145 | struct ipmi_recv_msg *recv_msg; | |
1146 | unsigned long flags; | |
1147 | ||
1148 | ||
1149 | if (supplied_recv) { | |
1150 | recv_msg = supplied_recv; | |
1151 | } else { | |
1152 | recv_msg = ipmi_alloc_recv_msg(); | |
1153 | if (recv_msg == NULL) { | |
1154 | return -ENOMEM; | |
1155 | } | |
1156 | } | |
1157 | recv_msg->user_msg_data = user_msg_data; | |
1158 | ||
1159 | if (supplied_smi) { | |
1160 | smi_msg = (struct ipmi_smi_msg *) supplied_smi; | |
1161 | } else { | |
1162 | smi_msg = ipmi_alloc_smi_msg(); | |
1163 | if (smi_msg == NULL) { | |
1164 | ipmi_free_recv_msg(recv_msg); | |
1165 | return -ENOMEM; | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | recv_msg->user = user; | |
393d2cc3 CM |
1170 | if (user) |
1171 | kref_get(&user->refcount); | |
1da177e4 LT |
1172 | recv_msg->msgid = msgid; |
1173 | /* Store the message to send in the receive message so timeout | |
1174 | responses can get the proper response data. */ | |
1175 | recv_msg->msg = *msg; | |
1176 | ||
1177 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
1178 | struct ipmi_system_interface_addr *smi_addr; | |
1179 | ||
1180 | if (msg->netfn & 1) { | |
1181 | /* Responses are not allowed to the SMI. */ | |
1182 | rv = -EINVAL; | |
1183 | goto out_err; | |
1184 | } | |
1185 | ||
1186 | smi_addr = (struct ipmi_system_interface_addr *) addr; | |
1187 | if (smi_addr->lun > 3) { | |
1188 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1189 | intf->sent_invalid_commands++; | |
1190 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1191 | rv = -EINVAL; | |
1192 | goto out_err; | |
1193 | } | |
1194 | ||
1195 | memcpy(&recv_msg->addr, smi_addr, sizeof(*smi_addr)); | |
1196 | ||
1197 | if ((msg->netfn == IPMI_NETFN_APP_REQUEST) | |
1198 | && ((msg->cmd == IPMI_SEND_MSG_CMD) | |
1199 | || (msg->cmd == IPMI_GET_MSG_CMD) | |
1200 | || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD))) | |
1201 | { | |
1202 | /* We don't let the user do these, since we manage | |
1203 | the sequence numbers. */ | |
1204 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1205 | intf->sent_invalid_commands++; | |
1206 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1207 | rv = -EINVAL; | |
1208 | goto out_err; | |
1209 | } | |
1210 | ||
1211 | if ((msg->data_len + 2) > IPMI_MAX_MSG_LENGTH) { | |
1212 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1213 | intf->sent_invalid_commands++; | |
1214 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1215 | rv = -EMSGSIZE; | |
1216 | goto out_err; | |
1217 | } | |
1218 | ||
1219 | smi_msg->data[0] = (msg->netfn << 2) | (smi_addr->lun & 0x3); | |
1220 | smi_msg->data[1] = msg->cmd; | |
1221 | smi_msg->msgid = msgid; | |
1222 | smi_msg->user_data = recv_msg; | |
1223 | if (msg->data_len > 0) | |
1224 | memcpy(&(smi_msg->data[2]), msg->data, msg->data_len); | |
1225 | smi_msg->data_size = msg->data_len + 2; | |
1226 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1227 | intf->sent_local_commands++; | |
1228 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1229 | } else if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE) | |
1230 | || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) | |
1231 | { | |
1232 | struct ipmi_ipmb_addr *ipmb_addr; | |
1233 | unsigned char ipmb_seq; | |
1234 | long seqid; | |
1235 | int broadcast = 0; | |
1236 | ||
9c101fd4 KZ |
1237 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
1238 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1da177e4 LT |
1239 | intf->sent_invalid_commands++; |
1240 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1241 | rv = -EINVAL; | |
1242 | goto out_err; | |
1243 | } | |
1244 | ||
1245 | if (intf->channels[addr->channel].medium | |
1246 | != IPMI_CHANNEL_MEDIUM_IPMB) | |
1247 | { | |
1248 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1249 | intf->sent_invalid_commands++; | |
1250 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1251 | rv = -EINVAL; | |
1252 | goto out_err; | |
1253 | } | |
1254 | ||
1255 | if (retries < 0) { | |
1256 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) | |
1257 | retries = 0; /* Don't retry broadcasts. */ | |
1258 | else | |
1259 | retries = 4; | |
1260 | } | |
1261 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) { | |
1262 | /* Broadcasts add a zero at the beginning of the | |
1263 | message, but otherwise is the same as an IPMB | |
1264 | address. */ | |
1265 | addr->addr_type = IPMI_IPMB_ADDR_TYPE; | |
1266 | broadcast = 1; | |
1267 | } | |
1268 | ||
1269 | ||
1270 | /* Default to 1 second retries. */ | |
1271 | if (retry_time_ms == 0) | |
1272 | retry_time_ms = 1000; | |
1273 | ||
1274 | /* 9 for the header and 1 for the checksum, plus | |
1275 | possibly one for the broadcast. */ | |
1276 | if ((msg->data_len + 10 + broadcast) > IPMI_MAX_MSG_LENGTH) { | |
1277 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1278 | intf->sent_invalid_commands++; | |
1279 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1280 | rv = -EMSGSIZE; | |
1281 | goto out_err; | |
1282 | } | |
1283 | ||
1284 | ipmb_addr = (struct ipmi_ipmb_addr *) addr; | |
1285 | if (ipmb_addr->lun > 3) { | |
1286 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1287 | intf->sent_invalid_commands++; | |
1288 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1289 | rv = -EINVAL; | |
1290 | goto out_err; | |
1291 | } | |
1292 | ||
1293 | memcpy(&recv_msg->addr, ipmb_addr, sizeof(*ipmb_addr)); | |
1294 | ||
1295 | if (recv_msg->msg.netfn & 0x1) { | |
1296 | /* It's a response, so use the user's sequence | |
1297 | from msgid. */ | |
1298 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1299 | intf->sent_ipmb_responses++; | |
1300 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1301 | format_ipmb_msg(smi_msg, msg, ipmb_addr, msgid, | |
1302 | msgid, broadcast, | |
1303 | source_address, source_lun); | |
1304 | ||
1305 | /* Save the receive message so we can use it | |
1306 | to deliver the response. */ | |
1307 | smi_msg->user_data = recv_msg; | |
1308 | } else { | |
1309 | /* It's a command, so get a sequence for it. */ | |
1310 | ||
1311 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1312 | ||
1313 | spin_lock(&intf->counter_lock); | |
1314 | intf->sent_ipmb_commands++; | |
1315 | spin_unlock(&intf->counter_lock); | |
1316 | ||
1317 | /* Create a sequence number with a 1 second | |
1318 | timeout and 4 retries. */ | |
1319 | rv = intf_next_seq(intf, | |
1320 | recv_msg, | |
1321 | retry_time_ms, | |
1322 | retries, | |
1323 | broadcast, | |
1324 | &ipmb_seq, | |
1325 | &seqid); | |
1326 | if (rv) { | |
1327 | /* We have used up all the sequence numbers, | |
1328 | probably, so abort. */ | |
1329 | spin_unlock_irqrestore(&(intf->seq_lock), | |
1330 | flags); | |
1331 | goto out_err; | |
1332 | } | |
1333 | ||
1334 | /* Store the sequence number in the message, | |
1335 | so that when the send message response | |
1336 | comes back we can start the timer. */ | |
1337 | format_ipmb_msg(smi_msg, msg, ipmb_addr, | |
1338 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1339 | ipmb_seq, broadcast, | |
1340 | source_address, source_lun); | |
1341 | ||
1342 | /* Copy the message into the recv message data, so we | |
1343 | can retransmit it later if necessary. */ | |
1344 | memcpy(recv_msg->msg_data, smi_msg->data, | |
1345 | smi_msg->data_size); | |
1346 | recv_msg->msg.data = recv_msg->msg_data; | |
1347 | recv_msg->msg.data_len = smi_msg->data_size; | |
1348 | ||
1349 | /* We don't unlock until here, because we need | |
1350 | to copy the completed message into the | |
1351 | recv_msg before we release the lock. | |
1352 | Otherwise, race conditions may bite us. I | |
1353 | know that's pretty paranoid, but I prefer | |
1354 | to be correct. */ | |
1355 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
1356 | } | |
1357 | } else if (addr->addr_type == IPMI_LAN_ADDR_TYPE) { | |
1358 | struct ipmi_lan_addr *lan_addr; | |
1359 | unsigned char ipmb_seq; | |
1360 | long seqid; | |
1361 | ||
12fc1d7b | 1362 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
1da177e4 LT |
1363 | spin_lock_irqsave(&intf->counter_lock, flags); |
1364 | intf->sent_invalid_commands++; | |
1365 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1366 | rv = -EINVAL; | |
1367 | goto out_err; | |
1368 | } | |
1369 | ||
1370 | if ((intf->channels[addr->channel].medium | |
1371 | != IPMI_CHANNEL_MEDIUM_8023LAN) | |
1372 | && (intf->channels[addr->channel].medium | |
1373 | != IPMI_CHANNEL_MEDIUM_ASYNC)) | |
1374 | { | |
1375 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1376 | intf->sent_invalid_commands++; | |
1377 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1378 | rv = -EINVAL; | |
1379 | goto out_err; | |
1380 | } | |
1381 | ||
1382 | retries = 4; | |
1383 | ||
1384 | /* Default to 1 second retries. */ | |
1385 | if (retry_time_ms == 0) | |
1386 | retry_time_ms = 1000; | |
1387 | ||
1388 | /* 11 for the header and 1 for the checksum. */ | |
1389 | if ((msg->data_len + 12) > IPMI_MAX_MSG_LENGTH) { | |
1390 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1391 | intf->sent_invalid_commands++; | |
1392 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1393 | rv = -EMSGSIZE; | |
1394 | goto out_err; | |
1395 | } | |
1396 | ||
1397 | lan_addr = (struct ipmi_lan_addr *) addr; | |
1398 | if (lan_addr->lun > 3) { | |
1399 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1400 | intf->sent_invalid_commands++; | |
1401 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1402 | rv = -EINVAL; | |
1403 | goto out_err; | |
1404 | } | |
1405 | ||
1406 | memcpy(&recv_msg->addr, lan_addr, sizeof(*lan_addr)); | |
1407 | ||
1408 | if (recv_msg->msg.netfn & 0x1) { | |
1409 | /* It's a response, so use the user's sequence | |
1410 | from msgid. */ | |
1411 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1412 | intf->sent_lan_responses++; | |
1413 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1414 | format_lan_msg(smi_msg, msg, lan_addr, msgid, | |
1415 | msgid, source_lun); | |
1416 | ||
1417 | /* Save the receive message so we can use it | |
1418 | to deliver the response. */ | |
1419 | smi_msg->user_data = recv_msg; | |
1420 | } else { | |
1421 | /* It's a command, so get a sequence for it. */ | |
1422 | ||
1423 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1424 | ||
1425 | spin_lock(&intf->counter_lock); | |
1426 | intf->sent_lan_commands++; | |
1427 | spin_unlock(&intf->counter_lock); | |
1428 | ||
1429 | /* Create a sequence number with a 1 second | |
1430 | timeout and 4 retries. */ | |
1431 | rv = intf_next_seq(intf, | |
1432 | recv_msg, | |
1433 | retry_time_ms, | |
1434 | retries, | |
1435 | 0, | |
1436 | &ipmb_seq, | |
1437 | &seqid); | |
1438 | if (rv) { | |
1439 | /* We have used up all the sequence numbers, | |
1440 | probably, so abort. */ | |
1441 | spin_unlock_irqrestore(&(intf->seq_lock), | |
1442 | flags); | |
1443 | goto out_err; | |
1444 | } | |
1445 | ||
1446 | /* Store the sequence number in the message, | |
1447 | so that when the send message response | |
1448 | comes back we can start the timer. */ | |
1449 | format_lan_msg(smi_msg, msg, lan_addr, | |
1450 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1451 | ipmb_seq, source_lun); | |
1452 | ||
1453 | /* Copy the message into the recv message data, so we | |
1454 | can retransmit it later if necessary. */ | |
1455 | memcpy(recv_msg->msg_data, smi_msg->data, | |
1456 | smi_msg->data_size); | |
1457 | recv_msg->msg.data = recv_msg->msg_data; | |
1458 | recv_msg->msg.data_len = smi_msg->data_size; | |
1459 | ||
1460 | /* We don't unlock until here, because we need | |
1461 | to copy the completed message into the | |
1462 | recv_msg before we release the lock. | |
1463 | Otherwise, race conditions may bite us. I | |
1464 | know that's pretty paranoid, but I prefer | |
1465 | to be correct. */ | |
1466 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
1467 | } | |
1468 | } else { | |
1469 | /* Unknown address type. */ | |
1470 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1471 | intf->sent_invalid_commands++; | |
1472 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1473 | rv = -EINVAL; | |
1474 | goto out_err; | |
1475 | } | |
1476 | ||
1477 | #ifdef DEBUG_MSGING | |
1478 | { | |
1479 | int m; | |
e8b33617 | 1480 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
1481 | printk(" %2.2x", smi_msg->data[m]); |
1482 | printk("\n"); | |
1483 | } | |
1484 | #endif | |
1485 | intf->handlers->sender(intf->send_info, smi_msg, priority); | |
1486 | ||
1487 | return 0; | |
1488 | ||
1489 | out_err: | |
1490 | ipmi_free_smi_msg(smi_msg); | |
1491 | ipmi_free_recv_msg(recv_msg); | |
1492 | return rv; | |
1493 | } | |
1494 | ||
c14979b9 CM |
1495 | static int check_addr(ipmi_smi_t intf, |
1496 | struct ipmi_addr *addr, | |
1497 | unsigned char *saddr, | |
1498 | unsigned char *lun) | |
1499 | { | |
1500 | if (addr->channel >= IPMI_MAX_CHANNELS) | |
1501 | return -EINVAL; | |
1502 | *lun = intf->channels[addr->channel].lun; | |
1503 | *saddr = intf->channels[addr->channel].address; | |
1504 | return 0; | |
1505 | } | |
1506 | ||
1da177e4 LT |
1507 | int ipmi_request_settime(ipmi_user_t user, |
1508 | struct ipmi_addr *addr, | |
1509 | long msgid, | |
1510 | struct kernel_ipmi_msg *msg, | |
1511 | void *user_msg_data, | |
1512 | int priority, | |
1513 | int retries, | |
1514 | unsigned int retry_time_ms) | |
1515 | { | |
c14979b9 CM |
1516 | unsigned char saddr, lun; |
1517 | int rv; | |
1518 | ||
8a3628d5 | 1519 | if (!user) |
56a55ec6 | 1520 | return -EINVAL; |
c14979b9 CM |
1521 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1522 | if (rv) | |
1523 | return rv; | |
1da177e4 LT |
1524 | return i_ipmi_request(user, |
1525 | user->intf, | |
1526 | addr, | |
1527 | msgid, | |
1528 | msg, | |
1529 | user_msg_data, | |
1530 | NULL, NULL, | |
1531 | priority, | |
c14979b9 CM |
1532 | saddr, |
1533 | lun, | |
1da177e4 LT |
1534 | retries, |
1535 | retry_time_ms); | |
1536 | } | |
1537 | ||
1538 | int ipmi_request_supply_msgs(ipmi_user_t user, | |
1539 | struct ipmi_addr *addr, | |
1540 | long msgid, | |
1541 | struct kernel_ipmi_msg *msg, | |
1542 | void *user_msg_data, | |
1543 | void *supplied_smi, | |
1544 | struct ipmi_recv_msg *supplied_recv, | |
1545 | int priority) | |
1546 | { | |
c14979b9 CM |
1547 | unsigned char saddr, lun; |
1548 | int rv; | |
1549 | ||
8a3628d5 | 1550 | if (!user) |
56a55ec6 | 1551 | return -EINVAL; |
c14979b9 CM |
1552 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1553 | if (rv) | |
1554 | return rv; | |
1da177e4 LT |
1555 | return i_ipmi_request(user, |
1556 | user->intf, | |
1557 | addr, | |
1558 | msgid, | |
1559 | msg, | |
1560 | user_msg_data, | |
1561 | supplied_smi, | |
1562 | supplied_recv, | |
1563 | priority, | |
c14979b9 CM |
1564 | saddr, |
1565 | lun, | |
1da177e4 LT |
1566 | -1, 0); |
1567 | } | |
1568 | ||
1569 | static int ipmb_file_read_proc(char *page, char **start, off_t off, | |
1570 | int count, int *eof, void *data) | |
1571 | { | |
1572 | char *out = (char *) page; | |
1573 | ipmi_smi_t intf = data; | |
c14979b9 | 1574 | int i; |
8a3628d5 | 1575 | int rv = 0; |
1da177e4 | 1576 | |
e8b33617 | 1577 | for (i = 0; i < IPMI_MAX_CHANNELS; i++) |
c14979b9 CM |
1578 | rv += sprintf(out+rv, "%x ", intf->channels[i].address); |
1579 | out[rv-1] = '\n'; /* Replace the final space with a newline */ | |
1580 | out[rv] = '\0'; | |
1581 | rv++; | |
1582 | return rv; | |
1da177e4 LT |
1583 | } |
1584 | ||
1585 | static int version_file_read_proc(char *page, char **start, off_t off, | |
1586 | int count, int *eof, void *data) | |
1587 | { | |
1588 | char *out = (char *) page; | |
1589 | ipmi_smi_t intf = data; | |
1590 | ||
1591 | return sprintf(out, "%d.%d\n", | |
50c812b2 CM |
1592 | ipmi_version_major(&intf->bmc->id), |
1593 | ipmi_version_minor(&intf->bmc->id)); | |
1da177e4 LT |
1594 | } |
1595 | ||
1596 | static int stat_file_read_proc(char *page, char **start, off_t off, | |
1597 | int count, int *eof, void *data) | |
1598 | { | |
1599 | char *out = (char *) page; | |
1600 | ipmi_smi_t intf = data; | |
1601 | ||
1602 | out += sprintf(out, "sent_invalid_commands: %d\n", | |
1603 | intf->sent_invalid_commands); | |
1604 | out += sprintf(out, "sent_local_commands: %d\n", | |
1605 | intf->sent_local_commands); | |
1606 | out += sprintf(out, "handled_local_responses: %d\n", | |
1607 | intf->handled_local_responses); | |
1608 | out += sprintf(out, "unhandled_local_responses: %d\n", | |
1609 | intf->unhandled_local_responses); | |
1610 | out += sprintf(out, "sent_ipmb_commands: %d\n", | |
1611 | intf->sent_ipmb_commands); | |
1612 | out += sprintf(out, "sent_ipmb_command_errs: %d\n", | |
1613 | intf->sent_ipmb_command_errs); | |
1614 | out += sprintf(out, "retransmitted_ipmb_commands: %d\n", | |
1615 | intf->retransmitted_ipmb_commands); | |
1616 | out += sprintf(out, "timed_out_ipmb_commands: %d\n", | |
1617 | intf->timed_out_ipmb_commands); | |
1618 | out += sprintf(out, "timed_out_ipmb_broadcasts: %d\n", | |
1619 | intf->timed_out_ipmb_broadcasts); | |
1620 | out += sprintf(out, "sent_ipmb_responses: %d\n", | |
1621 | intf->sent_ipmb_responses); | |
1622 | out += sprintf(out, "handled_ipmb_responses: %d\n", | |
1623 | intf->handled_ipmb_responses); | |
1624 | out += sprintf(out, "invalid_ipmb_responses: %d\n", | |
1625 | intf->invalid_ipmb_responses); | |
1626 | out += sprintf(out, "unhandled_ipmb_responses: %d\n", | |
1627 | intf->unhandled_ipmb_responses); | |
1628 | out += sprintf(out, "sent_lan_commands: %d\n", | |
1629 | intf->sent_lan_commands); | |
1630 | out += sprintf(out, "sent_lan_command_errs: %d\n", | |
1631 | intf->sent_lan_command_errs); | |
1632 | out += sprintf(out, "retransmitted_lan_commands: %d\n", | |
1633 | intf->retransmitted_lan_commands); | |
1634 | out += sprintf(out, "timed_out_lan_commands: %d\n", | |
1635 | intf->timed_out_lan_commands); | |
1636 | out += sprintf(out, "sent_lan_responses: %d\n", | |
1637 | intf->sent_lan_responses); | |
1638 | out += sprintf(out, "handled_lan_responses: %d\n", | |
1639 | intf->handled_lan_responses); | |
1640 | out += sprintf(out, "invalid_lan_responses: %d\n", | |
1641 | intf->invalid_lan_responses); | |
1642 | out += sprintf(out, "unhandled_lan_responses: %d\n", | |
1643 | intf->unhandled_lan_responses); | |
1644 | out += sprintf(out, "handled_commands: %d\n", | |
1645 | intf->handled_commands); | |
1646 | out += sprintf(out, "invalid_commands: %d\n", | |
1647 | intf->invalid_commands); | |
1648 | out += sprintf(out, "unhandled_commands: %d\n", | |
1649 | intf->unhandled_commands); | |
1650 | out += sprintf(out, "invalid_events: %d\n", | |
1651 | intf->invalid_events); | |
1652 | out += sprintf(out, "events: %d\n", | |
1653 | intf->events); | |
1654 | ||
1655 | return (out - ((char *) page)); | |
1656 | } | |
1657 | ||
1658 | int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, | |
1659 | read_proc_t *read_proc, write_proc_t *write_proc, | |
1660 | void *data, struct module *owner) | |
1661 | { | |
1da177e4 | 1662 | int rv = 0; |
3b625943 CM |
1663 | #ifdef CONFIG_PROC_FS |
1664 | struct proc_dir_entry *file; | |
1da177e4 LT |
1665 | struct ipmi_proc_entry *entry; |
1666 | ||
1667 | /* Create a list element. */ | |
1668 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); | |
1669 | if (!entry) | |
1670 | return -ENOMEM; | |
1671 | entry->name = kmalloc(strlen(name)+1, GFP_KERNEL); | |
1672 | if (!entry->name) { | |
1673 | kfree(entry); | |
1674 | return -ENOMEM; | |
1675 | } | |
1676 | strcpy(entry->name, name); | |
1677 | ||
1678 | file = create_proc_entry(name, 0, smi->proc_dir); | |
1679 | if (!file) { | |
1680 | kfree(entry->name); | |
1681 | kfree(entry); | |
1682 | rv = -ENOMEM; | |
1683 | } else { | |
1684 | file->nlink = 1; | |
1685 | file->data = data; | |
1686 | file->read_proc = read_proc; | |
1687 | file->write_proc = write_proc; | |
1688 | file->owner = owner; | |
1689 | ||
3b625943 | 1690 | spin_lock(&smi->proc_entry_lock); |
1da177e4 LT |
1691 | /* Stick it on the list. */ |
1692 | entry->next = smi->proc_entries; | |
1693 | smi->proc_entries = entry; | |
3b625943 | 1694 | spin_unlock(&smi->proc_entry_lock); |
1da177e4 | 1695 | } |
3b625943 | 1696 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
1697 | |
1698 | return rv; | |
1699 | } | |
1700 | ||
1701 | static int add_proc_entries(ipmi_smi_t smi, int num) | |
1702 | { | |
1703 | int rv = 0; | |
1704 | ||
3b625943 | 1705 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
1706 | sprintf(smi->proc_dir_name, "%d", num); |
1707 | smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); | |
1708 | if (!smi->proc_dir) | |
1709 | rv = -ENOMEM; | |
1710 | else { | |
1711 | smi->proc_dir->owner = THIS_MODULE; | |
1712 | } | |
1713 | ||
1714 | if (rv == 0) | |
1715 | rv = ipmi_smi_add_proc_entry(smi, "stats", | |
1716 | stat_file_read_proc, NULL, | |
1717 | smi, THIS_MODULE); | |
1718 | ||
1719 | if (rv == 0) | |
1720 | rv = ipmi_smi_add_proc_entry(smi, "ipmb", | |
1721 | ipmb_file_read_proc, NULL, | |
1722 | smi, THIS_MODULE); | |
1723 | ||
1724 | if (rv == 0) | |
1725 | rv = ipmi_smi_add_proc_entry(smi, "version", | |
1726 | version_file_read_proc, NULL, | |
1727 | smi, THIS_MODULE); | |
3b625943 | 1728 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
1729 | |
1730 | return rv; | |
1731 | } | |
1732 | ||
1733 | static void remove_proc_entries(ipmi_smi_t smi) | |
1734 | { | |
3b625943 | 1735 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
1736 | struct ipmi_proc_entry *entry; |
1737 | ||
3b625943 | 1738 | spin_lock(&smi->proc_entry_lock); |
1da177e4 LT |
1739 | while (smi->proc_entries) { |
1740 | entry = smi->proc_entries; | |
1741 | smi->proc_entries = entry->next; | |
1742 | ||
1743 | remove_proc_entry(entry->name, smi->proc_dir); | |
1744 | kfree(entry->name); | |
1745 | kfree(entry); | |
1746 | } | |
3b625943 | 1747 | spin_unlock(&smi->proc_entry_lock); |
1da177e4 | 1748 | remove_proc_entry(smi->proc_dir_name, proc_ipmi_root); |
3b625943 | 1749 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
1750 | } |
1751 | ||
50c812b2 CM |
1752 | static int __find_bmc_guid(struct device *dev, void *data) |
1753 | { | |
1754 | unsigned char *id = data; | |
1755 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1756 | return memcmp(bmc->guid, id, 16) == 0; | |
1757 | } | |
1758 | ||
1759 | static struct bmc_device *ipmi_find_bmc_guid(struct device_driver *drv, | |
1760 | unsigned char *guid) | |
1761 | { | |
1762 | struct device *dev; | |
1763 | ||
1764 | dev = driver_find_device(drv, NULL, guid, __find_bmc_guid); | |
1765 | if (dev) | |
1766 | return dev_get_drvdata(dev); | |
1767 | else | |
1768 | return NULL; | |
1769 | } | |
1770 | ||
1771 | struct prod_dev_id { | |
1772 | unsigned int product_id; | |
1773 | unsigned char device_id; | |
1774 | }; | |
1775 | ||
1776 | static int __find_bmc_prod_dev_id(struct device *dev, void *data) | |
1777 | { | |
1778 | struct prod_dev_id *id = data; | |
1779 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1780 | ||
1781 | return (bmc->id.product_id == id->product_id | |
1782 | && bmc->id.product_id == id->product_id | |
1783 | && bmc->id.device_id == id->device_id); | |
1784 | } | |
1785 | ||
1786 | static struct bmc_device *ipmi_find_bmc_prod_dev_id( | |
1787 | struct device_driver *drv, | |
1788 | unsigned char product_id, unsigned char device_id) | |
1789 | { | |
1790 | struct prod_dev_id id = { | |
1791 | .product_id = product_id, | |
1792 | .device_id = device_id, | |
1793 | }; | |
1794 | struct device *dev; | |
1795 | ||
1796 | dev = driver_find_device(drv, NULL, &id, __find_bmc_prod_dev_id); | |
1797 | if (dev) | |
1798 | return dev_get_drvdata(dev); | |
1799 | else | |
1800 | return NULL; | |
1801 | } | |
1802 | ||
1803 | static ssize_t device_id_show(struct device *dev, | |
1804 | struct device_attribute *attr, | |
1805 | char *buf) | |
1806 | { | |
1807 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1808 | ||
1809 | return snprintf(buf, 10, "%u\n", bmc->id.device_id); | |
1810 | } | |
1811 | ||
1812 | static ssize_t provides_dev_sdrs_show(struct device *dev, | |
1813 | struct device_attribute *attr, | |
1814 | char *buf) | |
1815 | { | |
1816 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1817 | ||
1818 | return snprintf(buf, 10, "%u\n", | |
1819 | bmc->id.device_revision && 0x80 >> 7); | |
1820 | } | |
1821 | ||
1822 | static ssize_t revision_show(struct device *dev, struct device_attribute *attr, | |
1823 | char *buf) | |
1824 | { | |
1825 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1826 | ||
1827 | return snprintf(buf, 20, "%u\n", | |
1828 | bmc->id.device_revision && 0x0F); | |
1829 | } | |
1830 | ||
1831 | static ssize_t firmware_rev_show(struct device *dev, | |
1832 | struct device_attribute *attr, | |
1833 | char *buf) | |
1834 | { | |
1835 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1836 | ||
1837 | return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1, | |
1838 | bmc->id.firmware_revision_2); | |
1839 | } | |
1840 | ||
1841 | static ssize_t ipmi_version_show(struct device *dev, | |
1842 | struct device_attribute *attr, | |
1843 | char *buf) | |
1844 | { | |
1845 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1846 | ||
1847 | return snprintf(buf, 20, "%u.%u\n", | |
1848 | ipmi_version_major(&bmc->id), | |
1849 | ipmi_version_minor(&bmc->id)); | |
1850 | } | |
1851 | ||
1852 | static ssize_t add_dev_support_show(struct device *dev, | |
1853 | struct device_attribute *attr, | |
1854 | char *buf) | |
1855 | { | |
1856 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1857 | ||
1858 | return snprintf(buf, 10, "0x%02x\n", | |
1859 | bmc->id.additional_device_support); | |
1860 | } | |
1861 | ||
1862 | static ssize_t manufacturer_id_show(struct device *dev, | |
1863 | struct device_attribute *attr, | |
1864 | char *buf) | |
1865 | { | |
1866 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1867 | ||
1868 | return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id); | |
1869 | } | |
1870 | ||
1871 | static ssize_t product_id_show(struct device *dev, | |
1872 | struct device_attribute *attr, | |
1873 | char *buf) | |
1874 | { | |
1875 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1876 | ||
1877 | return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id); | |
1878 | } | |
1879 | ||
1880 | static ssize_t aux_firmware_rev_show(struct device *dev, | |
1881 | struct device_attribute *attr, | |
1882 | char *buf) | |
1883 | { | |
1884 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1885 | ||
1886 | return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n", | |
1887 | bmc->id.aux_firmware_revision[3], | |
1888 | bmc->id.aux_firmware_revision[2], | |
1889 | bmc->id.aux_firmware_revision[1], | |
1890 | bmc->id.aux_firmware_revision[0]); | |
1891 | } | |
1892 | ||
1893 | static ssize_t guid_show(struct device *dev, struct device_attribute *attr, | |
1894 | char *buf) | |
1895 | { | |
1896 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1897 | ||
1898 | return snprintf(buf, 100, "%Lx%Lx\n", | |
1899 | (long long) bmc->guid[0], | |
1900 | (long long) bmc->guid[8]); | |
1901 | } | |
1902 | ||
1903 | static void | |
1904 | cleanup_bmc_device(struct kref *ref) | |
1905 | { | |
1906 | struct bmc_device *bmc; | |
1907 | ||
1908 | bmc = container_of(ref, struct bmc_device, refcount); | |
1909 | ||
1910 | device_remove_file(&bmc->dev->dev, | |
1911 | &bmc->device_id_attr); | |
1912 | device_remove_file(&bmc->dev->dev, | |
1913 | &bmc->provides_dev_sdrs_attr); | |
1914 | device_remove_file(&bmc->dev->dev, | |
1915 | &bmc->revision_attr); | |
1916 | device_remove_file(&bmc->dev->dev, | |
1917 | &bmc->firmware_rev_attr); | |
1918 | device_remove_file(&bmc->dev->dev, | |
1919 | &bmc->version_attr); | |
1920 | device_remove_file(&bmc->dev->dev, | |
1921 | &bmc->add_dev_support_attr); | |
1922 | device_remove_file(&bmc->dev->dev, | |
1923 | &bmc->manufacturer_id_attr); | |
1924 | device_remove_file(&bmc->dev->dev, | |
1925 | &bmc->product_id_attr); | |
1926 | if (bmc->id.aux_firmware_revision_set) | |
1927 | device_remove_file(&bmc->dev->dev, | |
1928 | &bmc->aux_firmware_rev_attr); | |
1929 | if (bmc->guid_set) | |
1930 | device_remove_file(&bmc->dev->dev, | |
1931 | &bmc->guid_attr); | |
1932 | platform_device_unregister(bmc->dev); | |
1933 | kfree(bmc); | |
1934 | } | |
1935 | ||
1936 | static void ipmi_bmc_unregister(ipmi_smi_t intf) | |
1937 | { | |
1938 | struct bmc_device *bmc = intf->bmc; | |
1939 | ||
1940 | sysfs_remove_link(&intf->si_dev->kobj, "bmc"); | |
1941 | if (intf->my_dev_name) { | |
1942 | sysfs_remove_link(&bmc->dev->dev.kobj, intf->my_dev_name); | |
1943 | kfree(intf->my_dev_name); | |
1944 | intf->my_dev_name = NULL; | |
1945 | } | |
1946 | ||
1947 | mutex_lock(&ipmidriver_mutex); | |
1948 | kref_put(&bmc->refcount, cleanup_bmc_device); | |
1949 | mutex_unlock(&ipmidriver_mutex); | |
1950 | } | |
1951 | ||
1952 | static int ipmi_bmc_register(ipmi_smi_t intf) | |
1953 | { | |
1954 | int rv; | |
1955 | struct bmc_device *bmc = intf->bmc; | |
1956 | struct bmc_device *old_bmc; | |
1957 | int size; | |
1958 | char dummy[1]; | |
1959 | ||
1960 | mutex_lock(&ipmidriver_mutex); | |
1961 | ||
1962 | /* | |
1963 | * Try to find if there is an bmc_device struct | |
1964 | * representing the interfaced BMC already | |
1965 | */ | |
1966 | if (bmc->guid_set) | |
1967 | old_bmc = ipmi_find_bmc_guid(&ipmidriver, bmc->guid); | |
1968 | else | |
1969 | old_bmc = ipmi_find_bmc_prod_dev_id(&ipmidriver, | |
1970 | bmc->id.product_id, | |
1971 | bmc->id.device_id); | |
1972 | ||
1973 | /* | |
1974 | * If there is already an bmc_device, free the new one, | |
1975 | * otherwise register the new BMC device | |
1976 | */ | |
1977 | if (old_bmc) { | |
1978 | kfree(bmc); | |
1979 | intf->bmc = old_bmc; | |
1980 | bmc = old_bmc; | |
1981 | ||
1982 | kref_get(&bmc->refcount); | |
1983 | mutex_unlock(&ipmidriver_mutex); | |
1984 | ||
1985 | printk(KERN_INFO | |
1986 | "ipmi: interfacing existing BMC (man_id: 0x%6.6x," | |
1987 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
1988 | bmc->id.manufacturer_id, | |
1989 | bmc->id.product_id, | |
1990 | bmc->id.device_id); | |
1991 | } else { | |
1992 | bmc->dev = platform_device_alloc("ipmi_bmc", | |
1993 | bmc->id.device_id); | |
8a3628d5 | 1994 | if (!bmc->dev) { |
50c812b2 CM |
1995 | printk(KERN_ERR |
1996 | "ipmi_msghandler:" | |
1997 | " Unable to allocate platform device\n"); | |
1998 | return -ENOMEM; | |
1999 | } | |
2000 | bmc->dev->dev.driver = &ipmidriver; | |
2001 | dev_set_drvdata(&bmc->dev->dev, bmc); | |
2002 | kref_init(&bmc->refcount); | |
2003 | ||
2004 | rv = platform_device_register(bmc->dev); | |
2005 | mutex_unlock(&ipmidriver_mutex); | |
2006 | if (rv) { | |
2007 | printk(KERN_ERR | |
2008 | "ipmi_msghandler:" | |
2009 | " Unable to register bmc device: %d\n", | |
2010 | rv); | |
2011 | /* Don't go to out_err, you can only do that if | |
2012 | the device is registered already. */ | |
2013 | return rv; | |
2014 | } | |
2015 | ||
2016 | bmc->device_id_attr.attr.name = "device_id"; | |
2017 | bmc->device_id_attr.attr.owner = THIS_MODULE; | |
2018 | bmc->device_id_attr.attr.mode = S_IRUGO; | |
2019 | bmc->device_id_attr.show = device_id_show; | |
2020 | ||
2021 | bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs"; | |
2022 | bmc->provides_dev_sdrs_attr.attr.owner = THIS_MODULE; | |
2023 | bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO; | |
2024 | bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show; | |
2025 | ||
2026 | ||
2027 | bmc->revision_attr.attr.name = "revision"; | |
2028 | bmc->revision_attr.attr.owner = THIS_MODULE; | |
2029 | bmc->revision_attr.attr.mode = S_IRUGO; | |
2030 | bmc->revision_attr.show = revision_show; | |
2031 | ||
2032 | bmc->firmware_rev_attr.attr.name = "firmware_revision"; | |
2033 | bmc->firmware_rev_attr.attr.owner = THIS_MODULE; | |
2034 | bmc->firmware_rev_attr.attr.mode = S_IRUGO; | |
2035 | bmc->firmware_rev_attr.show = firmware_rev_show; | |
2036 | ||
2037 | bmc->version_attr.attr.name = "ipmi_version"; | |
2038 | bmc->version_attr.attr.owner = THIS_MODULE; | |
2039 | bmc->version_attr.attr.mode = S_IRUGO; | |
2040 | bmc->version_attr.show = ipmi_version_show; | |
2041 | ||
2042 | bmc->add_dev_support_attr.attr.name | |
2043 | = "additional_device_support"; | |
2044 | bmc->add_dev_support_attr.attr.owner = THIS_MODULE; | |
2045 | bmc->add_dev_support_attr.attr.mode = S_IRUGO; | |
2046 | bmc->add_dev_support_attr.show = add_dev_support_show; | |
2047 | ||
2048 | bmc->manufacturer_id_attr.attr.name = "manufacturer_id"; | |
2049 | bmc->manufacturer_id_attr.attr.owner = THIS_MODULE; | |
2050 | bmc->manufacturer_id_attr.attr.mode = S_IRUGO; | |
2051 | bmc->manufacturer_id_attr.show = manufacturer_id_show; | |
2052 | ||
2053 | bmc->product_id_attr.attr.name = "product_id"; | |
2054 | bmc->product_id_attr.attr.owner = THIS_MODULE; | |
2055 | bmc->product_id_attr.attr.mode = S_IRUGO; | |
2056 | bmc->product_id_attr.show = product_id_show; | |
2057 | ||
2058 | bmc->guid_attr.attr.name = "guid"; | |
2059 | bmc->guid_attr.attr.owner = THIS_MODULE; | |
2060 | bmc->guid_attr.attr.mode = S_IRUGO; | |
2061 | bmc->guid_attr.show = guid_show; | |
2062 | ||
2063 | bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision"; | |
2064 | bmc->aux_firmware_rev_attr.attr.owner = THIS_MODULE; | |
2065 | bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO; | |
2066 | bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show; | |
2067 | ||
2068 | device_create_file(&bmc->dev->dev, | |
2069 | &bmc->device_id_attr); | |
2070 | device_create_file(&bmc->dev->dev, | |
2071 | &bmc->provides_dev_sdrs_attr); | |
2072 | device_create_file(&bmc->dev->dev, | |
2073 | &bmc->revision_attr); | |
2074 | device_create_file(&bmc->dev->dev, | |
2075 | &bmc->firmware_rev_attr); | |
2076 | device_create_file(&bmc->dev->dev, | |
2077 | &bmc->version_attr); | |
2078 | device_create_file(&bmc->dev->dev, | |
2079 | &bmc->add_dev_support_attr); | |
2080 | device_create_file(&bmc->dev->dev, | |
2081 | &bmc->manufacturer_id_attr); | |
2082 | device_create_file(&bmc->dev->dev, | |
2083 | &bmc->product_id_attr); | |
2084 | if (bmc->id.aux_firmware_revision_set) | |
2085 | device_create_file(&bmc->dev->dev, | |
2086 | &bmc->aux_firmware_rev_attr); | |
2087 | if (bmc->guid_set) | |
2088 | device_create_file(&bmc->dev->dev, | |
2089 | &bmc->guid_attr); | |
2090 | ||
2091 | printk(KERN_INFO | |
2092 | "ipmi: Found new BMC (man_id: 0x%6.6x, " | |
2093 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
2094 | bmc->id.manufacturer_id, | |
2095 | bmc->id.product_id, | |
2096 | bmc->id.device_id); | |
2097 | } | |
2098 | ||
2099 | /* | |
2100 | * create symlink from system interface device to bmc device | |
2101 | * and back. | |
2102 | */ | |
2103 | rv = sysfs_create_link(&intf->si_dev->kobj, | |
2104 | &bmc->dev->dev.kobj, "bmc"); | |
2105 | if (rv) { | |
2106 | printk(KERN_ERR | |
2107 | "ipmi_msghandler: Unable to create bmc symlink: %d\n", | |
2108 | rv); | |
2109 | goto out_err; | |
2110 | } | |
2111 | ||
2112 | size = snprintf(dummy, 0, "ipmi%d", intf->intf_num); | |
2113 | intf->my_dev_name = kmalloc(size+1, GFP_KERNEL); | |
2114 | if (!intf->my_dev_name) { | |
2115 | rv = -ENOMEM; | |
2116 | printk(KERN_ERR | |
2117 | "ipmi_msghandler: allocate link from BMC: %d\n", | |
2118 | rv); | |
2119 | goto out_err; | |
2120 | } | |
2121 | snprintf(intf->my_dev_name, size+1, "ipmi%d", intf->intf_num); | |
2122 | ||
2123 | rv = sysfs_create_link(&bmc->dev->dev.kobj, &intf->si_dev->kobj, | |
2124 | intf->my_dev_name); | |
2125 | if (rv) { | |
2126 | kfree(intf->my_dev_name); | |
2127 | intf->my_dev_name = NULL; | |
2128 | printk(KERN_ERR | |
2129 | "ipmi_msghandler:" | |
2130 | " Unable to create symlink to bmc: %d\n", | |
2131 | rv); | |
2132 | goto out_err; | |
2133 | } | |
2134 | ||
2135 | return 0; | |
2136 | ||
2137 | out_err: | |
2138 | ipmi_bmc_unregister(intf); | |
2139 | return rv; | |
2140 | } | |
2141 | ||
2142 | static int | |
2143 | send_guid_cmd(ipmi_smi_t intf, int chan) | |
2144 | { | |
2145 | struct kernel_ipmi_msg msg; | |
2146 | struct ipmi_system_interface_addr si; | |
2147 | ||
2148 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2149 | si.channel = IPMI_BMC_CHANNEL; | |
2150 | si.lun = 0; | |
2151 | ||
2152 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2153 | msg.cmd = IPMI_GET_DEVICE_GUID_CMD; | |
2154 | msg.data = NULL; | |
2155 | msg.data_len = 0; | |
2156 | return i_ipmi_request(NULL, | |
2157 | intf, | |
2158 | (struct ipmi_addr *) &si, | |
2159 | 0, | |
2160 | &msg, | |
2161 | intf, | |
2162 | NULL, | |
2163 | NULL, | |
2164 | 0, | |
2165 | intf->channels[0].address, | |
2166 | intf->channels[0].lun, | |
2167 | -1, 0); | |
2168 | } | |
2169 | ||
2170 | static void | |
2171 | guid_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) | |
2172 | { | |
2173 | if ((msg->addr.addr_type != IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
2174 | || (msg->msg.netfn != IPMI_NETFN_APP_RESPONSE) | |
2175 | || (msg->msg.cmd != IPMI_GET_DEVICE_GUID_CMD)) | |
2176 | /* Not for me */ | |
2177 | return; | |
2178 | ||
2179 | if (msg->msg.data[0] != 0) { | |
2180 | /* Error from getting the GUID, the BMC doesn't have one. */ | |
2181 | intf->bmc->guid_set = 0; | |
2182 | goto out; | |
2183 | } | |
2184 | ||
2185 | if (msg->msg.data_len < 17) { | |
2186 | intf->bmc->guid_set = 0; | |
2187 | printk(KERN_WARNING PFX | |
2188 | "guid_handler: The GUID response from the BMC was too" | |
2189 | " short, it was %d but should have been 17. Assuming" | |
2190 | " GUID is not available.\n", | |
2191 | msg->msg.data_len); | |
2192 | goto out; | |
2193 | } | |
2194 | ||
2195 | memcpy(intf->bmc->guid, msg->msg.data, 16); | |
2196 | intf->bmc->guid_set = 1; | |
2197 | out: | |
2198 | wake_up(&intf->waitq); | |
2199 | } | |
2200 | ||
2201 | static void | |
2202 | get_guid(ipmi_smi_t intf) | |
2203 | { | |
2204 | int rv; | |
2205 | ||
2206 | intf->bmc->guid_set = 0x2; | |
2207 | intf->null_user_handler = guid_handler; | |
2208 | rv = send_guid_cmd(intf, 0); | |
2209 | if (rv) | |
2210 | /* Send failed, no GUID available. */ | |
2211 | intf->bmc->guid_set = 0; | |
2212 | wait_event(intf->waitq, intf->bmc->guid_set != 2); | |
2213 | intf->null_user_handler = NULL; | |
2214 | } | |
2215 | ||
1da177e4 LT |
2216 | static int |
2217 | send_channel_info_cmd(ipmi_smi_t intf, int chan) | |
2218 | { | |
2219 | struct kernel_ipmi_msg msg; | |
2220 | unsigned char data[1]; | |
2221 | struct ipmi_system_interface_addr si; | |
2222 | ||
2223 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2224 | si.channel = IPMI_BMC_CHANNEL; | |
2225 | si.lun = 0; | |
2226 | ||
2227 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2228 | msg.cmd = IPMI_GET_CHANNEL_INFO_CMD; | |
2229 | msg.data = data; | |
2230 | msg.data_len = 1; | |
2231 | data[0] = chan; | |
2232 | return i_ipmi_request(NULL, | |
2233 | intf, | |
2234 | (struct ipmi_addr *) &si, | |
2235 | 0, | |
2236 | &msg, | |
56a55ec6 | 2237 | intf, |
1da177e4 LT |
2238 | NULL, |
2239 | NULL, | |
2240 | 0, | |
c14979b9 CM |
2241 | intf->channels[0].address, |
2242 | intf->channels[0].lun, | |
1da177e4 LT |
2243 | -1, 0); |
2244 | } | |
2245 | ||
2246 | static void | |
56a55ec6 | 2247 | channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 LT |
2248 | { |
2249 | int rv = 0; | |
2250 | int chan; | |
2251 | ||
56a55ec6 CM |
2252 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
2253 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
2254 | && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD)) | |
1da177e4 LT |
2255 | { |
2256 | /* It's the one we want */ | |
56a55ec6 | 2257 | if (msg->msg.data[0] != 0) { |
1da177e4 LT |
2258 | /* Got an error from the channel, just go on. */ |
2259 | ||
56a55ec6 | 2260 | if (msg->msg.data[0] == IPMI_INVALID_COMMAND_ERR) { |
1da177e4 LT |
2261 | /* If the MC does not support this |
2262 | command, that is legal. We just | |
2263 | assume it has one IPMB at channel | |
2264 | zero. */ | |
2265 | intf->channels[0].medium | |
2266 | = IPMI_CHANNEL_MEDIUM_IPMB; | |
2267 | intf->channels[0].protocol | |
2268 | = IPMI_CHANNEL_PROTOCOL_IPMB; | |
2269 | rv = -ENOSYS; | |
2270 | ||
2271 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2272 | wake_up(&intf->waitq); | |
2273 | goto out; | |
2274 | } | |
2275 | goto next_channel; | |
2276 | } | |
56a55ec6 | 2277 | if (msg->msg.data_len < 4) { |
1da177e4 LT |
2278 | /* Message not big enough, just go on. */ |
2279 | goto next_channel; | |
2280 | } | |
2281 | chan = intf->curr_channel; | |
56a55ec6 CM |
2282 | intf->channels[chan].medium = msg->msg.data[2] & 0x7f; |
2283 | intf->channels[chan].protocol = msg->msg.data[3] & 0x1f; | |
1da177e4 LT |
2284 | |
2285 | next_channel: | |
2286 | intf->curr_channel++; | |
2287 | if (intf->curr_channel >= IPMI_MAX_CHANNELS) | |
2288 | wake_up(&intf->waitq); | |
2289 | else | |
2290 | rv = send_channel_info_cmd(intf, intf->curr_channel); | |
2291 | ||
2292 | if (rv) { | |
2293 | /* Got an error somehow, just give up. */ | |
2294 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2295 | wake_up(&intf->waitq); | |
2296 | ||
2297 | printk(KERN_WARNING PFX | |
2298 | "Error sending channel information: %d\n", | |
2299 | rv); | |
2300 | } | |
2301 | } | |
2302 | out: | |
2303 | return; | |
2304 | } | |
2305 | ||
2306 | int ipmi_register_smi(struct ipmi_smi_handlers *handlers, | |
2307 | void *send_info, | |
50c812b2 CM |
2308 | struct ipmi_device_id *device_id, |
2309 | struct device *si_dev, | |
453823ba | 2310 | unsigned char slave_addr) |
1da177e4 LT |
2311 | { |
2312 | int i, j; | |
2313 | int rv; | |
393d2cc3 | 2314 | ipmi_smi_t intf; |
1da177e4 | 2315 | unsigned long flags; |
50c812b2 CM |
2316 | int version_major; |
2317 | int version_minor; | |
1da177e4 | 2318 | |
50c812b2 CM |
2319 | version_major = ipmi_version_major(device_id); |
2320 | version_minor = ipmi_version_minor(device_id); | |
1da177e4 LT |
2321 | |
2322 | /* Make sure the driver is actually initialized, this handles | |
2323 | problems with initialization order. */ | |
2324 | if (!initialized) { | |
2325 | rv = ipmi_init_msghandler(); | |
2326 | if (rv) | |
2327 | return rv; | |
2328 | /* The init code doesn't return an error if it was turned | |
2329 | off, but it won't initialize. Check that. */ | |
2330 | if (!initialized) | |
2331 | return -ENODEV; | |
2332 | } | |
2333 | ||
393d2cc3 CM |
2334 | intf = kmalloc(sizeof(*intf), GFP_KERNEL); |
2335 | if (!intf) | |
1da177e4 | 2336 | return -ENOMEM; |
393d2cc3 | 2337 | memset(intf, 0, sizeof(*intf)); |
50c812b2 CM |
2338 | intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL); |
2339 | if (!intf->bmc) { | |
2340 | kfree(intf); | |
2341 | return -ENOMEM; | |
2342 | } | |
393d2cc3 CM |
2343 | intf->intf_num = -1; |
2344 | kref_init(&intf->refcount); | |
50c812b2 CM |
2345 | intf->bmc->id = *device_id; |
2346 | intf->si_dev = si_dev; | |
393d2cc3 CM |
2347 | for (j = 0; j < IPMI_MAX_CHANNELS; j++) { |
2348 | intf->channels[j].address = IPMI_BMC_SLAVE_ADDR; | |
2349 | intf->channels[j].lun = 2; | |
2350 | } | |
2351 | if (slave_addr != 0) | |
2352 | intf->channels[0].address = slave_addr; | |
2353 | INIT_LIST_HEAD(&intf->users); | |
2354 | intf->handlers = handlers; | |
2355 | intf->send_info = send_info; | |
2356 | spin_lock_init(&intf->seq_lock); | |
2357 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) { | |
2358 | intf->seq_table[j].inuse = 0; | |
2359 | intf->seq_table[j].seqid = 0; | |
2360 | } | |
2361 | intf->curr_seq = 0; | |
2362 | #ifdef CONFIG_PROC_FS | |
2363 | spin_lock_init(&intf->proc_entry_lock); | |
2364 | #endif | |
2365 | spin_lock_init(&intf->waiting_msgs_lock); | |
2366 | INIT_LIST_HEAD(&intf->waiting_msgs); | |
2367 | spin_lock_init(&intf->events_lock); | |
2368 | INIT_LIST_HEAD(&intf->waiting_events); | |
2369 | intf->waiting_events_count = 0; | |
d6dfd131 | 2370 | mutex_init(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
2371 | INIT_LIST_HEAD(&intf->cmd_rcvrs); |
2372 | init_waitqueue_head(&intf->waitq); | |
2373 | ||
2374 | spin_lock_init(&intf->counter_lock); | |
2375 | intf->proc_dir = NULL; | |
1da177e4 LT |
2376 | |
2377 | rv = -ENOMEM; | |
393d2cc3 | 2378 | spin_lock_irqsave(&interfaces_lock, flags); |
e8b33617 | 2379 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
1da177e4 | 2380 | if (ipmi_interfaces[i] == NULL) { |
393d2cc3 CM |
2381 | intf->intf_num = i; |
2382 | /* Reserve the entry till we are done. */ | |
2383 | ipmi_interfaces[i] = IPMI_INVALID_INTERFACE_ENTRY; | |
1da177e4 | 2384 | rv = 0; |
1da177e4 LT |
2385 | break; |
2386 | } | |
2387 | } | |
393d2cc3 CM |
2388 | spin_unlock_irqrestore(&interfaces_lock, flags); |
2389 | if (rv) | |
2390 | goto out; | |
1da177e4 | 2391 | |
453823ba CM |
2392 | rv = handlers->start_processing(send_info, intf); |
2393 | if (rv) | |
2394 | goto out; | |
1da177e4 | 2395 | |
50c812b2 CM |
2396 | get_guid(intf); |
2397 | ||
393d2cc3 CM |
2398 | if ((version_major > 1) |
2399 | || ((version_major == 1) && (version_minor >= 5))) | |
2400 | { | |
2401 | /* Start scanning the channels to see what is | |
2402 | available. */ | |
2403 | intf->null_user_handler = channel_handler; | |
2404 | intf->curr_channel = 0; | |
2405 | rv = send_channel_info_cmd(intf, 0); | |
2406 | if (rv) | |
2407 | goto out; | |
1da177e4 | 2408 | |
393d2cc3 CM |
2409 | /* Wait for the channel info to be read. */ |
2410 | wait_event(intf->waitq, | |
2411 | intf->curr_channel >= IPMI_MAX_CHANNELS); | |
50c812b2 | 2412 | intf->null_user_handler = NULL; |
393d2cc3 CM |
2413 | } else { |
2414 | /* Assume a single IPMB channel at zero. */ | |
2415 | intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; | |
2416 | intf->channels[0].protocol = IPMI_CHANNEL_PROTOCOL_IPMB; | |
1da177e4 LT |
2417 | } |
2418 | ||
393d2cc3 CM |
2419 | if (rv == 0) |
2420 | rv = add_proc_entries(intf, i); | |
1da177e4 | 2421 | |
50c812b2 CM |
2422 | rv = ipmi_bmc_register(intf); |
2423 | ||
393d2cc3 | 2424 | out: |
1da177e4 | 2425 | if (rv) { |
393d2cc3 CM |
2426 | if (intf->proc_dir) |
2427 | remove_proc_entries(intf); | |
2428 | kref_put(&intf->refcount, intf_free); | |
2429 | if (i < MAX_IPMI_INTERFACES) { | |
2430 | spin_lock_irqsave(&interfaces_lock, flags); | |
2431 | ipmi_interfaces[i] = NULL; | |
2432 | spin_unlock_irqrestore(&interfaces_lock, flags); | |
2433 | } | |
2434 | } else { | |
2435 | spin_lock_irqsave(&interfaces_lock, flags); | |
2436 | ipmi_interfaces[i] = intf; | |
2437 | spin_unlock_irqrestore(&interfaces_lock, flags); | |
50c812b2 | 2438 | call_smi_watchers(i, intf->si_dev); |
1da177e4 LT |
2439 | } |
2440 | ||
2441 | return rv; | |
2442 | } | |
2443 | ||
1da177e4 LT |
2444 | int ipmi_unregister_smi(ipmi_smi_t intf) |
2445 | { | |
1da177e4 LT |
2446 | int i; |
2447 | struct ipmi_smi_watcher *w; | |
2448 | unsigned long flags; | |
2449 | ||
50c812b2 CM |
2450 | ipmi_bmc_unregister(intf); |
2451 | ||
393d2cc3 CM |
2452 | spin_lock_irqsave(&interfaces_lock, flags); |
2453 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { | |
2454 | if (ipmi_interfaces[i] == intf) { | |
2455 | /* Set the interface number reserved until we | |
2456 | * are done. */ | |
2457 | ipmi_interfaces[i] = IPMI_INVALID_INTERFACE_ENTRY; | |
2458 | intf->intf_num = -1; | |
2459 | break; | |
1da177e4 | 2460 | } |
1da177e4 | 2461 | } |
393d2cc3 | 2462 | spin_unlock_irqrestore(&interfaces_lock,flags); |
1da177e4 | 2463 | |
393d2cc3 CM |
2464 | if (i == MAX_IPMI_INTERFACES) |
2465 | return -ENODEV; | |
1da177e4 | 2466 | |
393d2cc3 | 2467 | remove_proc_entries(intf); |
1da177e4 LT |
2468 | |
2469 | /* Call all the watcher interfaces to tell them that | |
2470 | an interface is gone. */ | |
2471 | down_read(&smi_watchers_sem); | |
393d2cc3 | 2472 | list_for_each_entry(w, &smi_watchers, link) |
1da177e4 | 2473 | w->smi_gone(i); |
1da177e4 | 2474 | up_read(&smi_watchers_sem); |
393d2cc3 CM |
2475 | |
2476 | /* Allow the entry to be reused now. */ | |
2477 | spin_lock_irqsave(&interfaces_lock, flags); | |
2478 | ipmi_interfaces[i] = NULL; | |
2479 | spin_unlock_irqrestore(&interfaces_lock,flags); | |
2480 | ||
2481 | kref_put(&intf->refcount, intf_free); | |
1da177e4 LT |
2482 | return 0; |
2483 | } | |
2484 | ||
2485 | static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf, | |
2486 | struct ipmi_smi_msg *msg) | |
2487 | { | |
2488 | struct ipmi_ipmb_addr ipmb_addr; | |
2489 | struct ipmi_recv_msg *recv_msg; | |
2490 | unsigned long flags; | |
2491 | ||
2492 | ||
2493 | /* This is 11, not 10, because the response must contain a | |
2494 | * completion code. */ | |
2495 | if (msg->rsp_size < 11) { | |
2496 | /* Message not big enough, just ignore it. */ | |
2497 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2498 | intf->invalid_ipmb_responses++; | |
2499 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2500 | return 0; | |
2501 | } | |
2502 | ||
2503 | if (msg->rsp[2] != 0) { | |
2504 | /* An error getting the response, just ignore it. */ | |
2505 | return 0; | |
2506 | } | |
2507 | ||
2508 | ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; | |
2509 | ipmb_addr.slave_addr = msg->rsp[6]; | |
2510 | ipmb_addr.channel = msg->rsp[3] & 0x0f; | |
2511 | ipmb_addr.lun = msg->rsp[7] & 3; | |
2512 | ||
2513 | /* It's a response from a remote entity. Look up the sequence | |
2514 | number and handle the response. */ | |
2515 | if (intf_find_seq(intf, | |
2516 | msg->rsp[7] >> 2, | |
2517 | msg->rsp[3] & 0x0f, | |
2518 | msg->rsp[8], | |
2519 | (msg->rsp[4] >> 2) & (~1), | |
2520 | (struct ipmi_addr *) &(ipmb_addr), | |
2521 | &recv_msg)) | |
2522 | { | |
2523 | /* We were unable to find the sequence number, | |
2524 | so just nuke the message. */ | |
2525 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2526 | intf->unhandled_ipmb_responses++; | |
2527 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2528 | return 0; | |
2529 | } | |
2530 | ||
2531 | memcpy(recv_msg->msg_data, | |
2532 | &(msg->rsp[9]), | |
2533 | msg->rsp_size - 9); | |
2534 | /* THe other fields matched, so no need to set them, except | |
2535 | for netfn, which needs to be the response that was | |
2536 | returned, not the request value. */ | |
2537 | recv_msg->msg.netfn = msg->rsp[4] >> 2; | |
2538 | recv_msg->msg.data = recv_msg->msg_data; | |
2539 | recv_msg->msg.data_len = msg->rsp_size - 10; | |
2540 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
2541 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2542 | intf->handled_ipmb_responses++; | |
2543 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2544 | deliver_response(recv_msg); | |
2545 | ||
2546 | return 0; | |
2547 | } | |
2548 | ||
2549 | static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, | |
2550 | struct ipmi_smi_msg *msg) | |
2551 | { | |
393d2cc3 CM |
2552 | struct cmd_rcvr *rcvr; |
2553 | int rv = 0; | |
2554 | unsigned char netfn; | |
2555 | unsigned char cmd; | |
2556 | ipmi_user_t user = NULL; | |
2557 | struct ipmi_ipmb_addr *ipmb_addr; | |
2558 | struct ipmi_recv_msg *recv_msg; | |
2559 | unsigned long flags; | |
1da177e4 LT |
2560 | |
2561 | if (msg->rsp_size < 10) { | |
2562 | /* Message not big enough, just ignore it. */ | |
2563 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2564 | intf->invalid_commands++; | |
2565 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2566 | return 0; | |
2567 | } | |
2568 | ||
2569 | if (msg->rsp[2] != 0) { | |
2570 | /* An error getting the response, just ignore it. */ | |
2571 | return 0; | |
2572 | } | |
2573 | ||
2574 | netfn = msg->rsp[4] >> 2; | |
2575 | cmd = msg->rsp[8]; | |
2576 | ||
e61fb5b6 | 2577 | rcu_read_lock(); |
393d2cc3 CM |
2578 | rcvr = find_cmd_rcvr(intf, netfn, cmd); |
2579 | if (rcvr) { | |
2580 | user = rcvr->user; | |
2581 | kref_get(&user->refcount); | |
2582 | } else | |
2583 | user = NULL; | |
e61fb5b6 | 2584 | rcu_read_unlock(); |
1da177e4 LT |
2585 | |
2586 | if (user == NULL) { | |
2587 | /* We didn't find a user, deliver an error response. */ | |
2588 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2589 | intf->unhandled_commands++; | |
2590 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2591 | ||
2592 | msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
2593 | msg->data[1] = IPMI_SEND_MSG_CMD; | |
2594 | msg->data[2] = msg->rsp[3]; | |
2595 | msg->data[3] = msg->rsp[6]; | |
2596 | msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); | |
2597 | msg->data[5] = ipmb_checksum(&(msg->data[3]), 2); | |
c14979b9 | 2598 | msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address; |
1da177e4 LT |
2599 | /* rqseq/lun */ |
2600 | msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); | |
2601 | msg->data[8] = msg->rsp[8]; /* cmd */ | |
2602 | msg->data[9] = IPMI_INVALID_CMD_COMPLETION_CODE; | |
2603 | msg->data[10] = ipmb_checksum(&(msg->data[6]), 4); | |
2604 | msg->data_size = 11; | |
2605 | ||
2606 | #ifdef DEBUG_MSGING | |
2607 | { | |
2608 | int m; | |
2609 | printk("Invalid command:"); | |
e8b33617 | 2610 | for (m = 0; m < msg->data_size; m++) |
1da177e4 LT |
2611 | printk(" %2.2x", msg->data[m]); |
2612 | printk("\n"); | |
2613 | } | |
2614 | #endif | |
2615 | intf->handlers->sender(intf->send_info, msg, 0); | |
2616 | ||
2617 | rv = -1; /* We used the message, so return the value that | |
2618 | causes it to not be freed or queued. */ | |
2619 | } else { | |
2620 | /* Deliver the message to the user. */ | |
2621 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2622 | intf->handled_commands++; | |
2623 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2624 | ||
2625 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 2626 | if (!recv_msg) { |
1da177e4 LT |
2627 | /* We couldn't allocate memory for the |
2628 | message, so requeue it for handling | |
2629 | later. */ | |
2630 | rv = 1; | |
393d2cc3 | 2631 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
2632 | } else { |
2633 | /* Extract the source address from the data. */ | |
2634 | ipmb_addr = (struct ipmi_ipmb_addr *) &recv_msg->addr; | |
2635 | ipmb_addr->addr_type = IPMI_IPMB_ADDR_TYPE; | |
2636 | ipmb_addr->slave_addr = msg->rsp[6]; | |
2637 | ipmb_addr->lun = msg->rsp[7] & 3; | |
2638 | ipmb_addr->channel = msg->rsp[3] & 0xf; | |
2639 | ||
2640 | /* Extract the rest of the message information | |
2641 | from the IPMB header.*/ | |
2642 | recv_msg->user = user; | |
2643 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
2644 | recv_msg->msgid = msg->rsp[7] >> 2; | |
2645 | recv_msg->msg.netfn = msg->rsp[4] >> 2; | |
2646 | recv_msg->msg.cmd = msg->rsp[8]; | |
2647 | recv_msg->msg.data = recv_msg->msg_data; | |
2648 | ||
2649 | /* We chop off 10, not 9 bytes because the checksum | |
2650 | at the end also needs to be removed. */ | |
2651 | recv_msg->msg.data_len = msg->rsp_size - 10; | |
2652 | memcpy(recv_msg->msg_data, | |
2653 | &(msg->rsp[9]), | |
2654 | msg->rsp_size - 10); | |
2655 | deliver_response(recv_msg); | |
2656 | } | |
2657 | } | |
2658 | ||
2659 | return rv; | |
2660 | } | |
2661 | ||
2662 | static int handle_lan_get_msg_rsp(ipmi_smi_t intf, | |
2663 | struct ipmi_smi_msg *msg) | |
2664 | { | |
2665 | struct ipmi_lan_addr lan_addr; | |
2666 | struct ipmi_recv_msg *recv_msg; | |
2667 | unsigned long flags; | |
2668 | ||
2669 | ||
2670 | /* This is 13, not 12, because the response must contain a | |
2671 | * completion code. */ | |
2672 | if (msg->rsp_size < 13) { | |
2673 | /* Message not big enough, just ignore it. */ | |
2674 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2675 | intf->invalid_lan_responses++; | |
2676 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2677 | return 0; | |
2678 | } | |
2679 | ||
2680 | if (msg->rsp[2] != 0) { | |
2681 | /* An error getting the response, just ignore it. */ | |
2682 | return 0; | |
2683 | } | |
2684 | ||
2685 | lan_addr.addr_type = IPMI_LAN_ADDR_TYPE; | |
2686 | lan_addr.session_handle = msg->rsp[4]; | |
2687 | lan_addr.remote_SWID = msg->rsp[8]; | |
2688 | lan_addr.local_SWID = msg->rsp[5]; | |
2689 | lan_addr.channel = msg->rsp[3] & 0x0f; | |
2690 | lan_addr.privilege = msg->rsp[3] >> 4; | |
2691 | lan_addr.lun = msg->rsp[9] & 3; | |
2692 | ||
2693 | /* It's a response from a remote entity. Look up the sequence | |
2694 | number and handle the response. */ | |
2695 | if (intf_find_seq(intf, | |
2696 | msg->rsp[9] >> 2, | |
2697 | msg->rsp[3] & 0x0f, | |
2698 | msg->rsp[10], | |
2699 | (msg->rsp[6] >> 2) & (~1), | |
2700 | (struct ipmi_addr *) &(lan_addr), | |
2701 | &recv_msg)) | |
2702 | { | |
2703 | /* We were unable to find the sequence number, | |
2704 | so just nuke the message. */ | |
2705 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2706 | intf->unhandled_lan_responses++; | |
2707 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2708 | return 0; | |
2709 | } | |
2710 | ||
2711 | memcpy(recv_msg->msg_data, | |
2712 | &(msg->rsp[11]), | |
2713 | msg->rsp_size - 11); | |
2714 | /* The other fields matched, so no need to set them, except | |
2715 | for netfn, which needs to be the response that was | |
2716 | returned, not the request value. */ | |
2717 | recv_msg->msg.netfn = msg->rsp[6] >> 2; | |
2718 | recv_msg->msg.data = recv_msg->msg_data; | |
2719 | recv_msg->msg.data_len = msg->rsp_size - 12; | |
2720 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
2721 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2722 | intf->handled_lan_responses++; | |
2723 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2724 | deliver_response(recv_msg); | |
2725 | ||
2726 | return 0; | |
2727 | } | |
2728 | ||
2729 | static int handle_lan_get_msg_cmd(ipmi_smi_t intf, | |
2730 | struct ipmi_smi_msg *msg) | |
2731 | { | |
393d2cc3 CM |
2732 | struct cmd_rcvr *rcvr; |
2733 | int rv = 0; | |
2734 | unsigned char netfn; | |
2735 | unsigned char cmd; | |
2736 | ipmi_user_t user = NULL; | |
2737 | struct ipmi_lan_addr *lan_addr; | |
2738 | struct ipmi_recv_msg *recv_msg; | |
2739 | unsigned long flags; | |
1da177e4 LT |
2740 | |
2741 | if (msg->rsp_size < 12) { | |
2742 | /* Message not big enough, just ignore it. */ | |
2743 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2744 | intf->invalid_commands++; | |
2745 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2746 | return 0; | |
2747 | } | |
2748 | ||
2749 | if (msg->rsp[2] != 0) { | |
2750 | /* An error getting the response, just ignore it. */ | |
2751 | return 0; | |
2752 | } | |
2753 | ||
2754 | netfn = msg->rsp[6] >> 2; | |
2755 | cmd = msg->rsp[10]; | |
2756 | ||
e61fb5b6 | 2757 | rcu_read_lock(); |
393d2cc3 CM |
2758 | rcvr = find_cmd_rcvr(intf, netfn, cmd); |
2759 | if (rcvr) { | |
2760 | user = rcvr->user; | |
2761 | kref_get(&user->refcount); | |
2762 | } else | |
2763 | user = NULL; | |
e61fb5b6 | 2764 | rcu_read_unlock(); |
1da177e4 LT |
2765 | |
2766 | if (user == NULL) { | |
393d2cc3 | 2767 | /* We didn't find a user, just give up. */ |
1da177e4 LT |
2768 | spin_lock_irqsave(&intf->counter_lock, flags); |
2769 | intf->unhandled_commands++; | |
2770 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2771 | ||
2772 | rv = 0; /* Don't do anything with these messages, just | |
2773 | allow them to be freed. */ | |
2774 | } else { | |
2775 | /* Deliver the message to the user. */ | |
2776 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2777 | intf->handled_commands++; | |
2778 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2779 | ||
2780 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 2781 | if (!recv_msg) { |
1da177e4 LT |
2782 | /* We couldn't allocate memory for the |
2783 | message, so requeue it for handling | |
2784 | later. */ | |
2785 | rv = 1; | |
393d2cc3 | 2786 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
2787 | } else { |
2788 | /* Extract the source address from the data. */ | |
2789 | lan_addr = (struct ipmi_lan_addr *) &recv_msg->addr; | |
2790 | lan_addr->addr_type = IPMI_LAN_ADDR_TYPE; | |
2791 | lan_addr->session_handle = msg->rsp[4]; | |
2792 | lan_addr->remote_SWID = msg->rsp[8]; | |
2793 | lan_addr->local_SWID = msg->rsp[5]; | |
2794 | lan_addr->lun = msg->rsp[9] & 3; | |
2795 | lan_addr->channel = msg->rsp[3] & 0xf; | |
2796 | lan_addr->privilege = msg->rsp[3] >> 4; | |
2797 | ||
2798 | /* Extract the rest of the message information | |
2799 | from the IPMB header.*/ | |
2800 | recv_msg->user = user; | |
2801 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
2802 | recv_msg->msgid = msg->rsp[9] >> 2; | |
2803 | recv_msg->msg.netfn = msg->rsp[6] >> 2; | |
2804 | recv_msg->msg.cmd = msg->rsp[10]; | |
2805 | recv_msg->msg.data = recv_msg->msg_data; | |
2806 | ||
2807 | /* We chop off 12, not 11 bytes because the checksum | |
2808 | at the end also needs to be removed. */ | |
2809 | recv_msg->msg.data_len = msg->rsp_size - 12; | |
2810 | memcpy(recv_msg->msg_data, | |
2811 | &(msg->rsp[11]), | |
2812 | msg->rsp_size - 12); | |
2813 | deliver_response(recv_msg); | |
2814 | } | |
2815 | } | |
2816 | ||
2817 | return rv; | |
2818 | } | |
2819 | ||
2820 | static void copy_event_into_recv_msg(struct ipmi_recv_msg *recv_msg, | |
2821 | struct ipmi_smi_msg *msg) | |
2822 | { | |
2823 | struct ipmi_system_interface_addr *smi_addr; | |
2824 | ||
2825 | recv_msg->msgid = 0; | |
2826 | smi_addr = (struct ipmi_system_interface_addr *) &(recv_msg->addr); | |
2827 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2828 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
2829 | smi_addr->lun = msg->rsp[0] & 3; | |
2830 | recv_msg->recv_type = IPMI_ASYNC_EVENT_RECV_TYPE; | |
2831 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
2832 | recv_msg->msg.cmd = msg->rsp[1]; | |
2833 | memcpy(recv_msg->msg_data, &(msg->rsp[3]), msg->rsp_size - 3); | |
2834 | recv_msg->msg.data = recv_msg->msg_data; | |
2835 | recv_msg->msg.data_len = msg->rsp_size - 3; | |
2836 | } | |
2837 | ||
1da177e4 LT |
2838 | static int handle_read_event_rsp(ipmi_smi_t intf, |
2839 | struct ipmi_smi_msg *msg) | |
2840 | { | |
2841 | struct ipmi_recv_msg *recv_msg, *recv_msg2; | |
2842 | struct list_head msgs; | |
2843 | ipmi_user_t user; | |
2844 | int rv = 0; | |
2845 | int deliver_count = 0; | |
2846 | unsigned long flags; | |
2847 | ||
2848 | if (msg->rsp_size < 19) { | |
2849 | /* Message is too small to be an IPMB event. */ | |
2850 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2851 | intf->invalid_events++; | |
2852 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2853 | return 0; | |
2854 | } | |
2855 | ||
2856 | if (msg->rsp[2] != 0) { | |
2857 | /* An error getting the event, just ignore it. */ | |
2858 | return 0; | |
2859 | } | |
2860 | ||
2861 | INIT_LIST_HEAD(&msgs); | |
2862 | ||
393d2cc3 | 2863 | spin_lock_irqsave(&intf->events_lock, flags); |
1da177e4 LT |
2864 | |
2865 | spin_lock(&intf->counter_lock); | |
2866 | intf->events++; | |
2867 | spin_unlock(&intf->counter_lock); | |
2868 | ||
2869 | /* Allocate and fill in one message for every user that is getting | |
2870 | events. */ | |
393d2cc3 CM |
2871 | rcu_read_lock(); |
2872 | list_for_each_entry_rcu(user, &intf->users, link) { | |
8a3628d5 | 2873 | if (!user->gets_events) |
1da177e4 LT |
2874 | continue; |
2875 | ||
2876 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 2877 | if (!recv_msg) { |
393d2cc3 | 2878 | rcu_read_unlock(); |
8a3628d5 CM |
2879 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, |
2880 | link) { | |
1da177e4 LT |
2881 | list_del(&recv_msg->link); |
2882 | ipmi_free_recv_msg(recv_msg); | |
2883 | } | |
2884 | /* We couldn't allocate memory for the | |
2885 | message, so requeue it for handling | |
2886 | later. */ | |
2887 | rv = 1; | |
2888 | goto out; | |
2889 | } | |
2890 | ||
2891 | deliver_count++; | |
2892 | ||
2893 | copy_event_into_recv_msg(recv_msg, msg); | |
2894 | recv_msg->user = user; | |
393d2cc3 | 2895 | kref_get(&user->refcount); |
1da177e4 LT |
2896 | list_add_tail(&(recv_msg->link), &msgs); |
2897 | } | |
393d2cc3 | 2898 | rcu_read_unlock(); |
1da177e4 LT |
2899 | |
2900 | if (deliver_count) { | |
2901 | /* Now deliver all the messages. */ | |
2902 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, link) { | |
2903 | list_del(&recv_msg->link); | |
2904 | deliver_response(recv_msg); | |
2905 | } | |
2906 | } else if (intf->waiting_events_count < MAX_EVENTS_IN_QUEUE) { | |
2907 | /* No one to receive the message, put it in queue if there's | |
2908 | not already too many things in the queue. */ | |
2909 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 2910 | if (!recv_msg) { |
1da177e4 LT |
2911 | /* We couldn't allocate memory for the |
2912 | message, so requeue it for handling | |
2913 | later. */ | |
2914 | rv = 1; | |
2915 | goto out; | |
2916 | } | |
2917 | ||
2918 | copy_event_into_recv_msg(recv_msg, msg); | |
2919 | list_add_tail(&(recv_msg->link), &(intf->waiting_events)); | |
4791c03d | 2920 | intf->waiting_events_count++; |
1da177e4 LT |
2921 | } else { |
2922 | /* There's too many things in the queue, discard this | |
2923 | message. */ | |
2924 | printk(KERN_WARNING PFX "Event queue full, discarding an" | |
2925 | " incoming event\n"); | |
2926 | } | |
2927 | ||
2928 | out: | |
2929 | spin_unlock_irqrestore(&(intf->events_lock), flags); | |
2930 | ||
2931 | return rv; | |
2932 | } | |
2933 | ||
2934 | static int handle_bmc_rsp(ipmi_smi_t intf, | |
2935 | struct ipmi_smi_msg *msg) | |
2936 | { | |
2937 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 | 2938 | unsigned long flags; |
393d2cc3 | 2939 | struct ipmi_user *user; |
1da177e4 LT |
2940 | |
2941 | recv_msg = (struct ipmi_recv_msg *) msg->user_data; | |
56a55ec6 CM |
2942 | if (recv_msg == NULL) |
2943 | { | |
2944 | printk(KERN_WARNING"IPMI message received with no owner. This\n" | |
2945 | "could be because of a malformed message, or\n" | |
2946 | "because of a hardware error. Contact your\n" | |
2947 | "hardware vender for assistance\n"); | |
2948 | return 0; | |
2949 | } | |
1da177e4 | 2950 | |
393d2cc3 | 2951 | user = recv_msg->user; |
1da177e4 | 2952 | /* Make sure the user still exists. */ |
393d2cc3 | 2953 | if (user && !user->valid) { |
56a55ec6 CM |
2954 | /* The user for the message went away, so give up. */ |
2955 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2956 | intf->unhandled_local_responses++; | |
2957 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1da177e4 LT |
2958 | ipmi_free_recv_msg(recv_msg); |
2959 | } else { | |
2960 | struct ipmi_system_interface_addr *smi_addr; | |
2961 | ||
2962 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2963 | intf->handled_local_responses++; | |
2964 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2965 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
2966 | recv_msg->msgid = msg->msgid; | |
2967 | smi_addr = ((struct ipmi_system_interface_addr *) | |
2968 | &(recv_msg->addr)); | |
2969 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2970 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
2971 | smi_addr->lun = msg->rsp[0] & 3; | |
2972 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
2973 | recv_msg->msg.cmd = msg->rsp[1]; | |
2974 | memcpy(recv_msg->msg_data, | |
2975 | &(msg->rsp[2]), | |
2976 | msg->rsp_size - 2); | |
2977 | recv_msg->msg.data = recv_msg->msg_data; | |
2978 | recv_msg->msg.data_len = msg->rsp_size - 2; | |
2979 | deliver_response(recv_msg); | |
2980 | } | |
2981 | ||
2982 | return 0; | |
2983 | } | |
2984 | ||
2985 | /* Handle a new message. Return 1 if the message should be requeued, | |
2986 | 0 if the message should be freed, or -1 if the message should not | |
2987 | be freed or requeued. */ | |
2988 | static int handle_new_recv_msg(ipmi_smi_t intf, | |
2989 | struct ipmi_smi_msg *msg) | |
2990 | { | |
2991 | int requeue; | |
2992 | int chan; | |
2993 | ||
2994 | #ifdef DEBUG_MSGING | |
2995 | int m; | |
2996 | printk("Recv:"); | |
e8b33617 | 2997 | for (m = 0; m < msg->rsp_size; m++) |
1da177e4 LT |
2998 | printk(" %2.2x", msg->rsp[m]); |
2999 | printk("\n"); | |
3000 | #endif | |
3001 | if (msg->rsp_size < 2) { | |
3002 | /* Message is too small to be correct. */ | |
3003 | printk(KERN_WARNING PFX "BMC returned to small a message" | |
3004 | " for netfn %x cmd %x, got %d bytes\n", | |
3005 | (msg->data[0] >> 2) | 1, msg->data[1], msg->rsp_size); | |
3006 | ||
3007 | /* Generate an error response for the message. */ | |
3008 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3009 | msg->rsp[1] = msg->data[1]; | |
3010 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3011 | msg->rsp_size = 3; | |
3012 | } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1))/* Netfn */ | |
3013 | || (msg->rsp[1] != msg->data[1])) /* Command */ | |
3014 | { | |
3015 | /* The response is not even marginally correct. */ | |
3016 | printk(KERN_WARNING PFX "BMC returned incorrect response," | |
3017 | " expected netfn %x cmd %x, got netfn %x cmd %x\n", | |
3018 | (msg->data[0] >> 2) | 1, msg->data[1], | |
3019 | msg->rsp[0] >> 2, msg->rsp[1]); | |
3020 | ||
3021 | /* Generate an error response for the message. */ | |
3022 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3023 | msg->rsp[1] = msg->data[1]; | |
3024 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3025 | msg->rsp_size = 3; | |
3026 | } | |
3027 | ||
3028 | if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
3029 | && (msg->rsp[1] == IPMI_SEND_MSG_CMD) | |
3030 | && (msg->user_data != NULL)) | |
3031 | { | |
3032 | /* It's a response to a response we sent. For this we | |
3033 | deliver a send message response to the user. */ | |
393d2cc3 | 3034 | struct ipmi_recv_msg *recv_msg = msg->user_data; |
1da177e4 LT |
3035 | |
3036 | requeue = 0; | |
3037 | if (msg->rsp_size < 2) | |
3038 | /* Message is too small to be correct. */ | |
3039 | goto out; | |
3040 | ||
3041 | chan = msg->data[2] & 0x0f; | |
3042 | if (chan >= IPMI_MAX_CHANNELS) | |
3043 | /* Invalid channel number */ | |
3044 | goto out; | |
3045 | ||
393d2cc3 CM |
3046 | if (!recv_msg) |
3047 | goto out; | |
3048 | ||
3049 | /* Make sure the user still exists. */ | |
3050 | if (!recv_msg->user || !recv_msg->user->valid) | |
3051 | goto out; | |
3052 | ||
3053 | recv_msg->recv_type = IPMI_RESPONSE_RESPONSE_TYPE; | |
3054 | recv_msg->msg.data = recv_msg->msg_data; | |
3055 | recv_msg->msg.data_len = 1; | |
3056 | recv_msg->msg_data[0] = msg->rsp[2]; | |
3057 | deliver_response(recv_msg); | |
1da177e4 LT |
3058 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
3059 | && (msg->rsp[1] == IPMI_GET_MSG_CMD)) | |
3060 | { | |
3061 | /* It's from the receive queue. */ | |
3062 | chan = msg->rsp[3] & 0xf; | |
3063 | if (chan >= IPMI_MAX_CHANNELS) { | |
3064 | /* Invalid channel number */ | |
3065 | requeue = 0; | |
3066 | goto out; | |
3067 | } | |
3068 | ||
3069 | switch (intf->channels[chan].medium) { | |
3070 | case IPMI_CHANNEL_MEDIUM_IPMB: | |
3071 | if (msg->rsp[4] & 0x04) { | |
3072 | /* It's a response, so find the | |
3073 | requesting message and send it up. */ | |
3074 | requeue = handle_ipmb_get_msg_rsp(intf, msg); | |
3075 | } else { | |
3076 | /* It's a command to the SMS from some other | |
3077 | entity. Handle that. */ | |
3078 | requeue = handle_ipmb_get_msg_cmd(intf, msg); | |
3079 | } | |
3080 | break; | |
3081 | ||
3082 | case IPMI_CHANNEL_MEDIUM_8023LAN: | |
3083 | case IPMI_CHANNEL_MEDIUM_ASYNC: | |
3084 | if (msg->rsp[6] & 0x04) { | |
3085 | /* It's a response, so find the | |
3086 | requesting message and send it up. */ | |
3087 | requeue = handle_lan_get_msg_rsp(intf, msg); | |
3088 | } else { | |
3089 | /* It's a command to the SMS from some other | |
3090 | entity. Handle that. */ | |
3091 | requeue = handle_lan_get_msg_cmd(intf, msg); | |
3092 | } | |
3093 | break; | |
3094 | ||
3095 | default: | |
3096 | /* We don't handle the channel type, so just | |
3097 | * free the message. */ | |
3098 | requeue = 0; | |
3099 | } | |
3100 | ||
3101 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
3102 | && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD)) | |
3103 | { | |
3104 | /* It's an asyncronous event. */ | |
3105 | requeue = handle_read_event_rsp(intf, msg); | |
3106 | } else { | |
3107 | /* It's a response from the local BMC. */ | |
3108 | requeue = handle_bmc_rsp(intf, msg); | |
3109 | } | |
3110 | ||
3111 | out: | |
3112 | return requeue; | |
3113 | } | |
3114 | ||
3115 | /* Handle a new message from the lower layer. */ | |
3116 | void ipmi_smi_msg_received(ipmi_smi_t intf, | |
3117 | struct ipmi_smi_msg *msg) | |
3118 | { | |
3119 | unsigned long flags; | |
3120 | int rv; | |
3121 | ||
3122 | ||
1da177e4 LT |
3123 | if ((msg->data_size >= 2) |
3124 | && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) | |
3125 | && (msg->data[1] == IPMI_SEND_MSG_CMD) | |
393d2cc3 CM |
3126 | && (msg->user_data == NULL)) |
3127 | { | |
1da177e4 LT |
3128 | /* This is the local response to a command send, start |
3129 | the timer for these. The user_data will not be | |
3130 | NULL if this is a response send, and we will let | |
3131 | response sends just go through. */ | |
3132 | ||
3133 | /* Check for errors, if we get certain errors (ones | |
3134 | that mean basically we can try again later), we | |
3135 | ignore them and start the timer. Otherwise we | |
3136 | report the error immediately. */ | |
3137 | if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) | |
3138 | && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) | |
3139 | && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR)) | |
3140 | { | |
3141 | int chan = msg->rsp[3] & 0xf; | |
3142 | ||
3143 | /* Got an error sending the message, handle it. */ | |
3144 | spin_lock_irqsave(&intf->counter_lock, flags); | |
3145 | if (chan >= IPMI_MAX_CHANNELS) | |
3146 | ; /* This shouldn't happen */ | |
3147 | else if ((intf->channels[chan].medium | |
3148 | == IPMI_CHANNEL_MEDIUM_8023LAN) | |
3149 | || (intf->channels[chan].medium | |
3150 | == IPMI_CHANNEL_MEDIUM_ASYNC)) | |
3151 | intf->sent_lan_command_errs++; | |
3152 | else | |
3153 | intf->sent_ipmb_command_errs++; | |
3154 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
3155 | intf_err_seq(intf, msg->msgid, msg->rsp[2]); | |
3156 | } else { | |
3157 | /* The message was sent, start the timer. */ | |
3158 | intf_start_seq_timer(intf, msg->msgid); | |
3159 | } | |
3160 | ||
3161 | ipmi_free_smi_msg(msg); | |
393d2cc3 | 3162 | goto out; |
1da177e4 LT |
3163 | } |
3164 | ||
3165 | /* To preserve message order, if the list is not empty, we | |
3166 | tack this message onto the end of the list. */ | |
393d2cc3 CM |
3167 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
3168 | if (!list_empty(&intf->waiting_msgs)) { | |
3169 | list_add_tail(&msg->link, &intf->waiting_msgs); | |
177294d1 | 3170 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
393d2cc3 | 3171 | goto out; |
1da177e4 | 3172 | } |
393d2cc3 | 3173 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
1da177e4 LT |
3174 | |
3175 | rv = handle_new_recv_msg(intf, msg); | |
3176 | if (rv > 0) { | |
3177 | /* Could not handle the message now, just add it to a | |
3178 | list to handle later. */ | |
177294d1 | 3179 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
393d2cc3 | 3180 | list_add_tail(&msg->link, &intf->waiting_msgs); |
177294d1 | 3181 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
1da177e4 LT |
3182 | } else if (rv == 0) { |
3183 | ipmi_free_smi_msg(msg); | |
3184 | } | |
3185 | ||
393d2cc3 CM |
3186 | out: |
3187 | return; | |
1da177e4 LT |
3188 | } |
3189 | ||
3190 | void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf) | |
3191 | { | |
3192 | ipmi_user_t user; | |
3193 | ||
393d2cc3 CM |
3194 | rcu_read_lock(); |
3195 | list_for_each_entry_rcu(user, &intf->users, link) { | |
8a3628d5 | 3196 | if (!user->handler->ipmi_watchdog_pretimeout) |
1da177e4 LT |
3197 | continue; |
3198 | ||
3199 | user->handler->ipmi_watchdog_pretimeout(user->handler_data); | |
3200 | } | |
393d2cc3 | 3201 | rcu_read_unlock(); |
1da177e4 LT |
3202 | } |
3203 | ||
3204 | static void | |
3205 | handle_msg_timeout(struct ipmi_recv_msg *msg) | |
3206 | { | |
3207 | msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
3208 | msg->msg_data[0] = IPMI_TIMEOUT_COMPLETION_CODE; | |
3209 | msg->msg.netfn |= 1; /* Convert to a response. */ | |
3210 | msg->msg.data_len = 1; | |
3211 | msg->msg.data = msg->msg_data; | |
3212 | deliver_response(msg); | |
3213 | } | |
3214 | ||
882fe011 CM |
3215 | static struct ipmi_smi_msg * |
3216 | smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, | |
3217 | unsigned char seq, long seqid) | |
1da177e4 | 3218 | { |
882fe011 | 3219 | struct ipmi_smi_msg *smi_msg = ipmi_alloc_smi_msg(); |
1da177e4 LT |
3220 | if (!smi_msg) |
3221 | /* If we can't allocate the message, then just return, we | |
3222 | get 4 retries, so this should be ok. */ | |
882fe011 | 3223 | return NULL; |
1da177e4 LT |
3224 | |
3225 | memcpy(smi_msg->data, recv_msg->msg.data, recv_msg->msg.data_len); | |
3226 | smi_msg->data_size = recv_msg->msg.data_len; | |
3227 | smi_msg->msgid = STORE_SEQ_IN_MSGID(seq, seqid); | |
3228 | ||
1da177e4 LT |
3229 | #ifdef DEBUG_MSGING |
3230 | { | |
3231 | int m; | |
3232 | printk("Resend: "); | |
e8b33617 | 3233 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
3234 | printk(" %2.2x", smi_msg->data[m]); |
3235 | printk("\n"); | |
3236 | } | |
3237 | #endif | |
882fe011 | 3238 | return smi_msg; |
1da177e4 LT |
3239 | } |
3240 | ||
393d2cc3 CM |
3241 | static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent, |
3242 | struct list_head *timeouts, long timeout_period, | |
3243 | int slot, unsigned long *flags) | |
3244 | { | |
3245 | struct ipmi_recv_msg *msg; | |
3246 | ||
3247 | if (!ent->inuse) | |
3248 | return; | |
3249 | ||
3250 | ent->timeout -= timeout_period; | |
3251 | if (ent->timeout > 0) | |
3252 | return; | |
3253 | ||
3254 | if (ent->retries_left == 0) { | |
3255 | /* The message has used all its retries. */ | |
3256 | ent->inuse = 0; | |
3257 | msg = ent->recv_msg; | |
3258 | list_add_tail(&msg->link, timeouts); | |
3259 | spin_lock(&intf->counter_lock); | |
3260 | if (ent->broadcast) | |
3261 | intf->timed_out_ipmb_broadcasts++; | |
3262 | else if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE) | |
3263 | intf->timed_out_lan_commands++; | |
3264 | else | |
3265 | intf->timed_out_ipmb_commands++; | |
3266 | spin_unlock(&intf->counter_lock); | |
3267 | } else { | |
3268 | struct ipmi_smi_msg *smi_msg; | |
3269 | /* More retries, send again. */ | |
3270 | ||
3271 | /* Start with the max timer, set to normal | |
3272 | timer after the message is sent. */ | |
3273 | ent->timeout = MAX_MSG_TIMEOUT; | |
3274 | ent->retries_left--; | |
3275 | spin_lock(&intf->counter_lock); | |
3276 | if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE) | |
3277 | intf->retransmitted_lan_commands++; | |
3278 | else | |
3279 | intf->retransmitted_ipmb_commands++; | |
3280 | spin_unlock(&intf->counter_lock); | |
3281 | ||
3282 | smi_msg = smi_from_recv_msg(intf, ent->recv_msg, slot, | |
3283 | ent->seqid); | |
8a3628d5 | 3284 | if (!smi_msg) |
393d2cc3 CM |
3285 | return; |
3286 | ||
3287 | spin_unlock_irqrestore(&intf->seq_lock, *flags); | |
3288 | /* Send the new message. We send with a zero | |
3289 | * priority. It timed out, I doubt time is | |
3290 | * that critical now, and high priority | |
3291 | * messages are really only for messages to the | |
3292 | * local MC, which don't get resent. */ | |
3293 | intf->handlers->sender(intf->send_info, | |
3294 | smi_msg, 0); | |
3295 | spin_lock_irqsave(&intf->seq_lock, *flags); | |
3296 | } | |
3297 | } | |
3298 | ||
3299 | static void ipmi_timeout_handler(long timeout_period) | |
1da177e4 LT |
3300 | { |
3301 | ipmi_smi_t intf; | |
3302 | struct list_head timeouts; | |
3303 | struct ipmi_recv_msg *msg, *msg2; | |
3304 | struct ipmi_smi_msg *smi_msg, *smi_msg2; | |
3305 | unsigned long flags; | |
3306 | int i, j; | |
3307 | ||
3308 | INIT_LIST_HEAD(&timeouts); | |
3309 | ||
3310 | spin_lock(&interfaces_lock); | |
e8b33617 | 3311 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
1da177e4 | 3312 | intf = ipmi_interfaces[i]; |
393d2cc3 | 3313 | if (IPMI_INVALID_INTERFACE(intf)) |
1da177e4 | 3314 | continue; |
393d2cc3 CM |
3315 | kref_get(&intf->refcount); |
3316 | spin_unlock(&interfaces_lock); | |
1da177e4 LT |
3317 | |
3318 | /* See if any waiting messages need to be processed. */ | |
393d2cc3 | 3319 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
8a3628d5 CM |
3320 | list_for_each_entry_safe(smi_msg, smi_msg2, |
3321 | &intf->waiting_msgs, link) { | |
3322 | if (!handle_new_recv_msg(intf, smi_msg)) { | |
1da177e4 LT |
3323 | list_del(&smi_msg->link); |
3324 | ipmi_free_smi_msg(smi_msg); | |
3325 | } else { | |
3326 | /* To preserve message order, quit if we | |
3327 | can't handle a message. */ | |
3328 | break; | |
3329 | } | |
3330 | } | |
393d2cc3 | 3331 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
1da177e4 LT |
3332 | |
3333 | /* Go through the seq table and find any messages that | |
3334 | have timed out, putting them in the timeouts | |
3335 | list. */ | |
393d2cc3 CM |
3336 | spin_lock_irqsave(&intf->seq_lock, flags); |
3337 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) | |
3338 | check_msg_timeout(intf, &(intf->seq_table[j]), | |
3339 | &timeouts, timeout_period, j, | |
3340 | &flags); | |
3341 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
3342 | ||
3343 | list_for_each_entry_safe(msg, msg2, &timeouts, link) | |
1da177e4 | 3344 | handle_msg_timeout(msg); |
1da177e4 | 3345 | |
393d2cc3 CM |
3346 | kref_put(&intf->refcount, intf_free); |
3347 | spin_lock(&interfaces_lock); | |
1da177e4 LT |
3348 | } |
3349 | spin_unlock(&interfaces_lock); | |
3350 | } | |
3351 | ||
3352 | static void ipmi_request_event(void) | |
3353 | { | |
3354 | ipmi_smi_t intf; | |
3355 | int i; | |
3356 | ||
3357 | spin_lock(&interfaces_lock); | |
e8b33617 | 3358 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
1da177e4 | 3359 | intf = ipmi_interfaces[i]; |
393d2cc3 | 3360 | if (IPMI_INVALID_INTERFACE(intf)) |
1da177e4 LT |
3361 | continue; |
3362 | ||
3363 | intf->handlers->request_events(intf->send_info); | |
3364 | } | |
3365 | spin_unlock(&interfaces_lock); | |
3366 | } | |
3367 | ||
3368 | static struct timer_list ipmi_timer; | |
3369 | ||
3370 | /* Call every ~100 ms. */ | |
3371 | #define IPMI_TIMEOUT_TIME 100 | |
3372 | ||
3373 | /* How many jiffies does it take to get to the timeout time. */ | |
3374 | #define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000) | |
3375 | ||
3376 | /* Request events from the queue every second (this is the number of | |
3377 | IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the | |
3378 | future, IPMI will add a way to know immediately if an event is in | |
3379 | the queue and this silliness can go away. */ | |
3380 | #define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME)) | |
3381 | ||
8f43f84f | 3382 | static atomic_t stop_operation; |
1da177e4 LT |
3383 | static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
3384 | ||
3385 | static void ipmi_timeout(unsigned long data) | |
3386 | { | |
8f43f84f | 3387 | if (atomic_read(&stop_operation)) |
1da177e4 | 3388 | return; |
1da177e4 LT |
3389 | |
3390 | ticks_to_req_ev--; | |
3391 | if (ticks_to_req_ev == 0) { | |
3392 | ipmi_request_event(); | |
3393 | ticks_to_req_ev = IPMI_REQUEST_EV_TIME; | |
3394 | } | |
3395 | ||
3396 | ipmi_timeout_handler(IPMI_TIMEOUT_TIME); | |
3397 | ||
8f43f84f | 3398 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); |
1da177e4 LT |
3399 | } |
3400 | ||
3401 | ||
3402 | static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0); | |
3403 | static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0); | |
3404 | ||
3405 | /* FIXME - convert these to slabs. */ | |
3406 | static void free_smi_msg(struct ipmi_smi_msg *msg) | |
3407 | { | |
3408 | atomic_dec(&smi_msg_inuse_count); | |
3409 | kfree(msg); | |
3410 | } | |
3411 | ||
3412 | struct ipmi_smi_msg *ipmi_alloc_smi_msg(void) | |
3413 | { | |
3414 | struct ipmi_smi_msg *rv; | |
3415 | rv = kmalloc(sizeof(struct ipmi_smi_msg), GFP_ATOMIC); | |
3416 | if (rv) { | |
3417 | rv->done = free_smi_msg; | |
3418 | rv->user_data = NULL; | |
3419 | atomic_inc(&smi_msg_inuse_count); | |
3420 | } | |
3421 | return rv; | |
3422 | } | |
3423 | ||
3424 | static void free_recv_msg(struct ipmi_recv_msg *msg) | |
3425 | { | |
3426 | atomic_dec(&recv_msg_inuse_count); | |
3427 | kfree(msg); | |
3428 | } | |
3429 | ||
3430 | struct ipmi_recv_msg *ipmi_alloc_recv_msg(void) | |
3431 | { | |
3432 | struct ipmi_recv_msg *rv; | |
3433 | ||
3434 | rv = kmalloc(sizeof(struct ipmi_recv_msg), GFP_ATOMIC); | |
3435 | if (rv) { | |
3436 | rv->done = free_recv_msg; | |
3437 | atomic_inc(&recv_msg_inuse_count); | |
3438 | } | |
3439 | return rv; | |
3440 | } | |
3441 | ||
393d2cc3 CM |
3442 | void ipmi_free_recv_msg(struct ipmi_recv_msg *msg) |
3443 | { | |
3444 | if (msg->user) | |
3445 | kref_put(&msg->user->refcount, free_user); | |
3446 | msg->done(msg); | |
3447 | } | |
3448 | ||
1da177e4 LT |
3449 | #ifdef CONFIG_IPMI_PANIC_EVENT |
3450 | ||
3451 | static void dummy_smi_done_handler(struct ipmi_smi_msg *msg) | |
3452 | { | |
3453 | } | |
3454 | ||
3455 | static void dummy_recv_done_handler(struct ipmi_recv_msg *msg) | |
3456 | { | |
3457 | } | |
3458 | ||
3459 | #ifdef CONFIG_IPMI_PANIC_STRING | |
56a55ec6 | 3460 | static void event_receiver_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 3461 | { |
56a55ec6 CM |
3462 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
3463 | && (msg->msg.netfn == IPMI_NETFN_SENSOR_EVENT_RESPONSE) | |
3464 | && (msg->msg.cmd == IPMI_GET_EVENT_RECEIVER_CMD) | |
3465 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) | |
1da177e4 LT |
3466 | { |
3467 | /* A get event receiver command, save it. */ | |
56a55ec6 CM |
3468 | intf->event_receiver = msg->msg.data[1]; |
3469 | intf->event_receiver_lun = msg->msg.data[2] & 0x3; | |
1da177e4 LT |
3470 | } |
3471 | } | |
3472 | ||
56a55ec6 | 3473 | static void device_id_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 3474 | { |
56a55ec6 CM |
3475 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
3476 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
3477 | && (msg->msg.cmd == IPMI_GET_DEVICE_ID_CMD) | |
3478 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) | |
1da177e4 LT |
3479 | { |
3480 | /* A get device id command, save if we are an event | |
3481 | receiver or generator. */ | |
56a55ec6 CM |
3482 | intf->local_sel_device = (msg->msg.data[6] >> 2) & 1; |
3483 | intf->local_event_generator = (msg->msg.data[6] >> 5) & 1; | |
1da177e4 LT |
3484 | } |
3485 | } | |
3486 | #endif | |
3487 | ||
3488 | static void send_panic_events(char *str) | |
3489 | { | |
3490 | struct kernel_ipmi_msg msg; | |
3491 | ipmi_smi_t intf; | |
3492 | unsigned char data[16]; | |
3493 | int i; | |
3494 | struct ipmi_system_interface_addr *si; | |
3495 | struct ipmi_addr addr; | |
3496 | struct ipmi_smi_msg smi_msg; | |
3497 | struct ipmi_recv_msg recv_msg; | |
3498 | ||
3499 | si = (struct ipmi_system_interface_addr *) &addr; | |
3500 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3501 | si->channel = IPMI_BMC_CHANNEL; | |
3502 | si->lun = 0; | |
3503 | ||
3504 | /* Fill in an event telling that we have failed. */ | |
3505 | msg.netfn = 0x04; /* Sensor or Event. */ | |
3506 | msg.cmd = 2; /* Platform event command. */ | |
3507 | msg.data = data; | |
3508 | msg.data_len = 8; | |
cda315ab | 3509 | data[0] = 0x41; /* Kernel generator ID, IPMI table 5-4 */ |
1da177e4 LT |
3510 | data[1] = 0x03; /* This is for IPMI 1.0. */ |
3511 | data[2] = 0x20; /* OS Critical Stop, IPMI table 36-3 */ | |
3512 | data[4] = 0x6f; /* Sensor specific, IPMI table 36-1 */ | |
3513 | data[5] = 0xa1; /* Runtime stop OEM bytes 2 & 3. */ | |
3514 | ||
3515 | /* Put a few breadcrumbs in. Hopefully later we can add more things | |
3516 | to make the panic events more useful. */ | |
3517 | if (str) { | |
3518 | data[3] = str[0]; | |
3519 | data[6] = str[1]; | |
3520 | data[7] = str[2]; | |
3521 | } | |
3522 | ||
3523 | smi_msg.done = dummy_smi_done_handler; | |
3524 | recv_msg.done = dummy_recv_done_handler; | |
3525 | ||
3526 | /* For every registered interface, send the event. */ | |
e8b33617 | 3527 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
1da177e4 | 3528 | intf = ipmi_interfaces[i]; |
393d2cc3 | 3529 | if (IPMI_INVALID_INTERFACE(intf)) |
1da177e4 LT |
3530 | continue; |
3531 | ||
3532 | /* Send the event announcing the panic. */ | |
3533 | intf->handlers->set_run_to_completion(intf->send_info, 1); | |
3534 | i_ipmi_request(NULL, | |
3535 | intf, | |
3536 | &addr, | |
3537 | 0, | |
3538 | &msg, | |
56a55ec6 | 3539 | intf, |
1da177e4 LT |
3540 | &smi_msg, |
3541 | &recv_msg, | |
3542 | 0, | |
c14979b9 CM |
3543 | intf->channels[0].address, |
3544 | intf->channels[0].lun, | |
1da177e4 LT |
3545 | 0, 1); /* Don't retry, and don't wait. */ |
3546 | } | |
3547 | ||
3548 | #ifdef CONFIG_IPMI_PANIC_STRING | |
3549 | /* On every interface, dump a bunch of OEM event holding the | |
3550 | string. */ | |
3551 | if (!str) | |
3552 | return; | |
3553 | ||
e8b33617 | 3554 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
1da177e4 LT |
3555 | char *p = str; |
3556 | struct ipmi_ipmb_addr *ipmb; | |
3557 | int j; | |
3558 | ||
3559 | intf = ipmi_interfaces[i]; | |
393d2cc3 | 3560 | if (IPMI_INVALID_INTERFACE(intf)) |
1da177e4 LT |
3561 | continue; |
3562 | ||
3563 | /* First job here is to figure out where to send the | |
3564 | OEM events. There's no way in IPMI to send OEM | |
3565 | events using an event send command, so we have to | |
3566 | find the SEL to put them in and stick them in | |
3567 | there. */ | |
3568 | ||
3569 | /* Get capabilities from the get device id. */ | |
3570 | intf->local_sel_device = 0; | |
3571 | intf->local_event_generator = 0; | |
3572 | intf->event_receiver = 0; | |
3573 | ||
3574 | /* Request the device info from the local MC. */ | |
3575 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
3576 | msg.cmd = IPMI_GET_DEVICE_ID_CMD; | |
3577 | msg.data = NULL; | |
3578 | msg.data_len = 0; | |
3579 | intf->null_user_handler = device_id_fetcher; | |
3580 | i_ipmi_request(NULL, | |
3581 | intf, | |
3582 | &addr, | |
3583 | 0, | |
3584 | &msg, | |
56a55ec6 | 3585 | intf, |
1da177e4 LT |
3586 | &smi_msg, |
3587 | &recv_msg, | |
3588 | 0, | |
c14979b9 CM |
3589 | intf->channels[0].address, |
3590 | intf->channels[0].lun, | |
1da177e4 LT |
3591 | 0, 1); /* Don't retry, and don't wait. */ |
3592 | ||
3593 | if (intf->local_event_generator) { | |
3594 | /* Request the event receiver from the local MC. */ | |
3595 | msg.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; | |
3596 | msg.cmd = IPMI_GET_EVENT_RECEIVER_CMD; | |
3597 | msg.data = NULL; | |
3598 | msg.data_len = 0; | |
3599 | intf->null_user_handler = event_receiver_fetcher; | |
3600 | i_ipmi_request(NULL, | |
3601 | intf, | |
3602 | &addr, | |
3603 | 0, | |
3604 | &msg, | |
56a55ec6 | 3605 | intf, |
1da177e4 LT |
3606 | &smi_msg, |
3607 | &recv_msg, | |
3608 | 0, | |
c14979b9 CM |
3609 | intf->channels[0].address, |
3610 | intf->channels[0].lun, | |
1da177e4 LT |
3611 | 0, 1); /* no retry, and no wait. */ |
3612 | } | |
3613 | intf->null_user_handler = NULL; | |
3614 | ||
3615 | /* Validate the event receiver. The low bit must not | |
3616 | be 1 (it must be a valid IPMB address), it cannot | |
3617 | be zero, and it must not be my address. */ | |
3618 | if (((intf->event_receiver & 1) == 0) | |
3619 | && (intf->event_receiver != 0) | |
c14979b9 | 3620 | && (intf->event_receiver != intf->channels[0].address)) |
1da177e4 LT |
3621 | { |
3622 | /* The event receiver is valid, send an IPMB | |
3623 | message. */ | |
3624 | ipmb = (struct ipmi_ipmb_addr *) &addr; | |
3625 | ipmb->addr_type = IPMI_IPMB_ADDR_TYPE; | |
3626 | ipmb->channel = 0; /* FIXME - is this right? */ | |
3627 | ipmb->lun = intf->event_receiver_lun; | |
3628 | ipmb->slave_addr = intf->event_receiver; | |
3629 | } else if (intf->local_sel_device) { | |
3630 | /* The event receiver was not valid (or was | |
3631 | me), but I am an SEL device, just dump it | |
3632 | in my SEL. */ | |
3633 | si = (struct ipmi_system_interface_addr *) &addr; | |
3634 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3635 | si->channel = IPMI_BMC_CHANNEL; | |
3636 | si->lun = 0; | |
3637 | } else | |
3638 | continue; /* No where to send the event. */ | |
3639 | ||
3640 | ||
3641 | msg.netfn = IPMI_NETFN_STORAGE_REQUEST; /* Storage. */ | |
3642 | msg.cmd = IPMI_ADD_SEL_ENTRY_CMD; | |
3643 | msg.data = data; | |
3644 | msg.data_len = 16; | |
3645 | ||
3646 | j = 0; | |
3647 | while (*p) { | |
3648 | int size = strlen(p); | |
3649 | ||
3650 | if (size > 11) | |
3651 | size = 11; | |
3652 | data[0] = 0; | |
3653 | data[1] = 0; | |
3654 | data[2] = 0xf0; /* OEM event without timestamp. */ | |
c14979b9 | 3655 | data[3] = intf->channels[0].address; |
1da177e4 LT |
3656 | data[4] = j++; /* sequence # */ |
3657 | /* Always give 11 bytes, so strncpy will fill | |
3658 | it with zeroes for me. */ | |
3659 | strncpy(data+5, p, 11); | |
3660 | p += size; | |
3661 | ||
3662 | i_ipmi_request(NULL, | |
3663 | intf, | |
3664 | &addr, | |
3665 | 0, | |
3666 | &msg, | |
56a55ec6 | 3667 | intf, |
1da177e4 LT |
3668 | &smi_msg, |
3669 | &recv_msg, | |
3670 | 0, | |
c14979b9 CM |
3671 | intf->channels[0].address, |
3672 | intf->channels[0].lun, | |
1da177e4 LT |
3673 | 0, 1); /* no retry, and no wait. */ |
3674 | } | |
3675 | } | |
3676 | #endif /* CONFIG_IPMI_PANIC_STRING */ | |
3677 | } | |
3678 | #endif /* CONFIG_IPMI_PANIC_EVENT */ | |
3679 | ||
3680 | static int has_paniced = 0; | |
3681 | ||
3682 | static int panic_event(struct notifier_block *this, | |
3683 | unsigned long event, | |
3684 | void *ptr) | |
3685 | { | |
3686 | int i; | |
3687 | ipmi_smi_t intf; | |
3688 | ||
3689 | if (has_paniced) | |
3690 | return NOTIFY_DONE; | |
3691 | has_paniced = 1; | |
3692 | ||
3693 | /* For every registered interface, set it to run to completion. */ | |
e8b33617 | 3694 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
1da177e4 | 3695 | intf = ipmi_interfaces[i]; |
393d2cc3 | 3696 | if (IPMI_INVALID_INTERFACE(intf)) |
1da177e4 LT |
3697 | continue; |
3698 | ||
3699 | intf->handlers->set_run_to_completion(intf->send_info, 1); | |
3700 | } | |
3701 | ||
3702 | #ifdef CONFIG_IPMI_PANIC_EVENT | |
3703 | send_panic_events(ptr); | |
3704 | #endif | |
3705 | ||
3706 | return NOTIFY_DONE; | |
3707 | } | |
3708 | ||
3709 | static struct notifier_block panic_block = { | |
3710 | .notifier_call = panic_event, | |
3711 | .next = NULL, | |
3712 | .priority = 200 /* priority: INT_MAX >= x >= 0 */ | |
3713 | }; | |
3714 | ||
3715 | static int ipmi_init_msghandler(void) | |
3716 | { | |
3717 | int i; | |
50c812b2 | 3718 | int rv; |
1da177e4 LT |
3719 | |
3720 | if (initialized) | |
3721 | return 0; | |
3722 | ||
50c812b2 CM |
3723 | rv = driver_register(&ipmidriver); |
3724 | if (rv) { | |
3725 | printk(KERN_ERR PFX "Could not register IPMI driver\n"); | |
3726 | return rv; | |
3727 | } | |
3728 | ||
1da177e4 | 3729 | printk(KERN_INFO "ipmi message handler version " |
1fdd75bd | 3730 | IPMI_DRIVER_VERSION "\n"); |
1da177e4 | 3731 | |
393d2cc3 | 3732 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) |
1da177e4 | 3733 | ipmi_interfaces[i] = NULL; |
1da177e4 | 3734 | |
3b625943 | 3735 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
3736 | proc_ipmi_root = proc_mkdir("ipmi", NULL); |
3737 | if (!proc_ipmi_root) { | |
3738 | printk(KERN_ERR PFX "Unable to create IPMI proc dir"); | |
3739 | return -ENOMEM; | |
3740 | } | |
3741 | ||
3742 | proc_ipmi_root->owner = THIS_MODULE; | |
3b625943 | 3743 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
3744 | |
3745 | init_timer(&ipmi_timer); | |
3746 | ipmi_timer.data = 0; | |
3747 | ipmi_timer.function = ipmi_timeout; | |
3748 | ipmi_timer.expires = jiffies + IPMI_TIMEOUT_JIFFIES; | |
3749 | add_timer(&ipmi_timer); | |
3750 | ||
e041c683 | 3751 | atomic_notifier_chain_register(&panic_notifier_list, &panic_block); |
1da177e4 LT |
3752 | |
3753 | initialized = 1; | |
3754 | ||
3755 | return 0; | |
3756 | } | |
3757 | ||
3758 | static __init int ipmi_init_msghandler_mod(void) | |
3759 | { | |
3760 | ipmi_init_msghandler(); | |
3761 | return 0; | |
3762 | } | |
3763 | ||
3764 | static __exit void cleanup_ipmi(void) | |
3765 | { | |
3766 | int count; | |
3767 | ||
3768 | if (!initialized) | |
3769 | return; | |
3770 | ||
e041c683 | 3771 | atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block); |
1da177e4 LT |
3772 | |
3773 | /* This can't be called if any interfaces exist, so no worry about | |
3774 | shutting down the interfaces. */ | |
3775 | ||
3776 | /* Tell the timer to stop, then wait for it to stop. This avoids | |
3777 | problems with race conditions removing the timer here. */ | |
8f43f84f CM |
3778 | atomic_inc(&stop_operation); |
3779 | del_timer_sync(&ipmi_timer); | |
1da177e4 | 3780 | |
3b625943 | 3781 | #ifdef CONFIG_PROC_FS |
1da177e4 | 3782 | remove_proc_entry(proc_ipmi_root->name, &proc_root); |
3b625943 | 3783 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 3784 | |
50c812b2 CM |
3785 | driver_unregister(&ipmidriver); |
3786 | ||
1da177e4 LT |
3787 | initialized = 0; |
3788 | ||
3789 | /* Check for buffer leaks. */ | |
3790 | count = atomic_read(&smi_msg_inuse_count); | |
3791 | if (count != 0) | |
3792 | printk(KERN_WARNING PFX "SMI message count %d at exit\n", | |
3793 | count); | |
3794 | count = atomic_read(&recv_msg_inuse_count); | |
3795 | if (count != 0) | |
3796 | printk(KERN_WARNING PFX "recv message count %d at exit\n", | |
3797 | count); | |
3798 | } | |
3799 | module_exit(cleanup_ipmi); | |
3800 | ||
3801 | module_init(ipmi_init_msghandler_mod); | |
3802 | MODULE_LICENSE("GPL"); | |
1fdd75bd CM |
3803 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
3804 | MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI interface."); | |
3805 | MODULE_VERSION(IPMI_DRIVER_VERSION); | |
1da177e4 LT |
3806 | |
3807 | EXPORT_SYMBOL(ipmi_create_user); | |
3808 | EXPORT_SYMBOL(ipmi_destroy_user); | |
3809 | EXPORT_SYMBOL(ipmi_get_version); | |
3810 | EXPORT_SYMBOL(ipmi_request_settime); | |
3811 | EXPORT_SYMBOL(ipmi_request_supply_msgs); | |
3812 | EXPORT_SYMBOL(ipmi_register_smi); | |
3813 | EXPORT_SYMBOL(ipmi_unregister_smi); | |
3814 | EXPORT_SYMBOL(ipmi_register_for_cmd); | |
3815 | EXPORT_SYMBOL(ipmi_unregister_for_cmd); | |
3816 | EXPORT_SYMBOL(ipmi_smi_msg_received); | |
3817 | EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); | |
3818 | EXPORT_SYMBOL(ipmi_alloc_smi_msg); | |
3819 | EXPORT_SYMBOL(ipmi_addr_length); | |
3820 | EXPORT_SYMBOL(ipmi_validate_addr); | |
3821 | EXPORT_SYMBOL(ipmi_set_gets_events); | |
3822 | EXPORT_SYMBOL(ipmi_smi_watcher_register); | |
3823 | EXPORT_SYMBOL(ipmi_smi_watcher_unregister); | |
3824 | EXPORT_SYMBOL(ipmi_set_my_address); | |
3825 | EXPORT_SYMBOL(ipmi_get_my_address); | |
3826 | EXPORT_SYMBOL(ipmi_set_my_LUN); | |
3827 | EXPORT_SYMBOL(ipmi_get_my_LUN); | |
3828 | EXPORT_SYMBOL(ipmi_smi_add_proc_entry); | |
3829 | EXPORT_SYMBOL(ipmi_user_set_run_to_completion); | |
393d2cc3 | 3830 | EXPORT_SYMBOL(ipmi_free_recv_msg); |