Commit | Line | Data |
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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. */ | |
179e0917 AM |
939 | list_for_each_entry_safe(msg, msg2, &intf->waiting_events, link) |
940 | list_move_tail(&msg->link, &msgs); | |
4791c03d | 941 | intf->waiting_events_count = 0; |
1da177e4 | 942 | } |
393d2cc3 CM |
943 | |
944 | /* Hold the events lock while doing this to preserve order. */ | |
945 | list_for_each_entry_safe(msg, msg2, &msgs, link) { | |
946 | msg->user = user; | |
947 | kref_get(&user->refcount); | |
948 | deliver_response(msg); | |
949 | } | |
950 | ||
951 | spin_unlock_irqrestore(&intf->events_lock, flags); | |
1da177e4 LT |
952 | |
953 | return 0; | |
954 | } | |
955 | ||
393d2cc3 CM |
956 | static struct cmd_rcvr *find_cmd_rcvr(ipmi_smi_t intf, |
957 | unsigned char netfn, | |
958 | unsigned char cmd) | |
959 | { | |
960 | struct cmd_rcvr *rcvr; | |
961 | ||
962 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { | |
963 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd)) | |
964 | return rcvr; | |
965 | } | |
966 | return NULL; | |
967 | } | |
968 | ||
1da177e4 LT |
969 | int ipmi_register_for_cmd(ipmi_user_t user, |
970 | unsigned char netfn, | |
971 | unsigned char cmd) | |
972 | { | |
393d2cc3 CM |
973 | ipmi_smi_t intf = user->intf; |
974 | struct cmd_rcvr *rcvr; | |
975 | struct cmd_rcvr *entry; | |
976 | int rv = 0; | |
1da177e4 LT |
977 | |
978 | ||
979 | rcvr = kmalloc(sizeof(*rcvr), GFP_KERNEL); | |
8a3628d5 | 980 | if (!rcvr) |
1da177e4 | 981 | return -ENOMEM; |
393d2cc3 CM |
982 | rcvr->cmd = cmd; |
983 | rcvr->netfn = netfn; | |
984 | rcvr->user = user; | |
1da177e4 | 985 | |
d6dfd131 | 986 | mutex_lock(&intf->cmd_rcvrs_mutex); |
1da177e4 | 987 | /* Make sure the command/netfn is not already registered. */ |
393d2cc3 CM |
988 | entry = find_cmd_rcvr(intf, netfn, cmd); |
989 | if (entry) { | |
990 | rv = -EBUSY; | |
991 | goto out_unlock; | |
1da177e4 | 992 | } |
877197ef | 993 | |
393d2cc3 | 994 | list_add_rcu(&rcvr->link, &intf->cmd_rcvrs); |
1da177e4 | 995 | |
393d2cc3 | 996 | out_unlock: |
d6dfd131 | 997 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
1da177e4 LT |
998 | if (rv) |
999 | kfree(rcvr); | |
1000 | ||
1001 | return rv; | |
1002 | } | |
1003 | ||
1004 | int ipmi_unregister_for_cmd(ipmi_user_t user, | |
1005 | unsigned char netfn, | |
1006 | unsigned char cmd) | |
1007 | { | |
393d2cc3 CM |
1008 | ipmi_smi_t intf = user->intf; |
1009 | struct cmd_rcvr *rcvr; | |
1da177e4 | 1010 | |
d6dfd131 | 1011 | mutex_lock(&intf->cmd_rcvrs_mutex); |
1da177e4 | 1012 | /* Make sure the command/netfn is not already registered. */ |
393d2cc3 CM |
1013 | rcvr = find_cmd_rcvr(intf, netfn, cmd); |
1014 | if ((rcvr) && (rcvr->user == user)) { | |
1015 | list_del_rcu(&rcvr->link); | |
d6dfd131 | 1016 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
1017 | synchronize_rcu(); |
1018 | kfree(rcvr); | |
1019 | return 0; | |
1020 | } else { | |
d6dfd131 | 1021 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 | 1022 | return -ENOENT; |
1da177e4 | 1023 | } |
1da177e4 LT |
1024 | } |
1025 | ||
1026 | void ipmi_user_set_run_to_completion(ipmi_user_t user, int val) | |
1027 | { | |
393d2cc3 CM |
1028 | ipmi_smi_t intf = user->intf; |
1029 | intf->handlers->set_run_to_completion(intf->send_info, val); | |
1da177e4 LT |
1030 | } |
1031 | ||
1032 | static unsigned char | |
1033 | ipmb_checksum(unsigned char *data, int size) | |
1034 | { | |
1035 | unsigned char csum = 0; | |
1036 | ||
1037 | for (; size > 0; size--, data++) | |
1038 | csum += *data; | |
1039 | ||
1040 | return -csum; | |
1041 | } | |
1042 | ||
1043 | static inline void format_ipmb_msg(struct ipmi_smi_msg *smi_msg, | |
1044 | struct kernel_ipmi_msg *msg, | |
1045 | struct ipmi_ipmb_addr *ipmb_addr, | |
1046 | long msgid, | |
1047 | unsigned char ipmb_seq, | |
1048 | int broadcast, | |
1049 | unsigned char source_address, | |
1050 | unsigned char source_lun) | |
1051 | { | |
1052 | int i = broadcast; | |
1053 | ||
1054 | /* Format the IPMB header data. */ | |
1055 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1056 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1057 | smi_msg->data[2] = ipmb_addr->channel; | |
1058 | if (broadcast) | |
1059 | smi_msg->data[3] = 0; | |
1060 | smi_msg->data[i+3] = ipmb_addr->slave_addr; | |
1061 | smi_msg->data[i+4] = (msg->netfn << 2) | (ipmb_addr->lun & 0x3); | |
1062 | smi_msg->data[i+5] = ipmb_checksum(&(smi_msg->data[i+3]), 2); | |
1063 | smi_msg->data[i+6] = source_address; | |
1064 | smi_msg->data[i+7] = (ipmb_seq << 2) | source_lun; | |
1065 | smi_msg->data[i+8] = msg->cmd; | |
1066 | ||
1067 | /* Now tack on the data to the message. */ | |
1068 | if (msg->data_len > 0) | |
1069 | memcpy(&(smi_msg->data[i+9]), msg->data, | |
1070 | msg->data_len); | |
1071 | smi_msg->data_size = msg->data_len + 9; | |
1072 | ||
1073 | /* Now calculate the checksum and tack it on. */ | |
1074 | smi_msg->data[i+smi_msg->data_size] | |
1075 | = ipmb_checksum(&(smi_msg->data[i+6]), | |
1076 | smi_msg->data_size-6); | |
1077 | ||
1078 | /* Add on the checksum size and the offset from the | |
1079 | broadcast. */ | |
1080 | smi_msg->data_size += 1 + i; | |
1081 | ||
1082 | smi_msg->msgid = msgid; | |
1083 | } | |
1084 | ||
1085 | static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg, | |
1086 | struct kernel_ipmi_msg *msg, | |
1087 | struct ipmi_lan_addr *lan_addr, | |
1088 | long msgid, | |
1089 | unsigned char ipmb_seq, | |
1090 | unsigned char source_lun) | |
1091 | { | |
1092 | /* Format the IPMB header data. */ | |
1093 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1094 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1095 | smi_msg->data[2] = lan_addr->channel; | |
1096 | smi_msg->data[3] = lan_addr->session_handle; | |
1097 | smi_msg->data[4] = lan_addr->remote_SWID; | |
1098 | smi_msg->data[5] = (msg->netfn << 2) | (lan_addr->lun & 0x3); | |
1099 | smi_msg->data[6] = ipmb_checksum(&(smi_msg->data[4]), 2); | |
1100 | smi_msg->data[7] = lan_addr->local_SWID; | |
1101 | smi_msg->data[8] = (ipmb_seq << 2) | source_lun; | |
1102 | smi_msg->data[9] = msg->cmd; | |
1103 | ||
1104 | /* Now tack on the data to the message. */ | |
1105 | if (msg->data_len > 0) | |
1106 | memcpy(&(smi_msg->data[10]), msg->data, | |
1107 | msg->data_len); | |
1108 | smi_msg->data_size = msg->data_len + 10; | |
1109 | ||
1110 | /* Now calculate the checksum and tack it on. */ | |
1111 | smi_msg->data[smi_msg->data_size] | |
1112 | = ipmb_checksum(&(smi_msg->data[7]), | |
1113 | smi_msg->data_size-7); | |
1114 | ||
1115 | /* Add on the checksum size and the offset from the | |
1116 | broadcast. */ | |
1117 | smi_msg->data_size += 1; | |
1118 | ||
1119 | smi_msg->msgid = msgid; | |
1120 | } | |
1121 | ||
1122 | /* Separate from ipmi_request so that the user does not have to be | |
1123 | supplied in certain circumstances (mainly at panic time). If | |
1124 | messages are supplied, they will be freed, even if an error | |
1125 | occurs. */ | |
393d2cc3 CM |
1126 | static int i_ipmi_request(ipmi_user_t user, |
1127 | ipmi_smi_t intf, | |
1128 | struct ipmi_addr *addr, | |
1129 | long msgid, | |
1130 | struct kernel_ipmi_msg *msg, | |
1131 | void *user_msg_data, | |
1132 | void *supplied_smi, | |
1133 | struct ipmi_recv_msg *supplied_recv, | |
1134 | int priority, | |
1135 | unsigned char source_address, | |
1136 | unsigned char source_lun, | |
1137 | int retries, | |
1138 | unsigned int retry_time_ms) | |
1da177e4 LT |
1139 | { |
1140 | int rv = 0; | |
1141 | struct ipmi_smi_msg *smi_msg; | |
1142 | struct ipmi_recv_msg *recv_msg; | |
1143 | unsigned long flags; | |
1144 | ||
1145 | ||
1146 | if (supplied_recv) { | |
1147 | recv_msg = supplied_recv; | |
1148 | } else { | |
1149 | recv_msg = ipmi_alloc_recv_msg(); | |
1150 | if (recv_msg == NULL) { | |
1151 | return -ENOMEM; | |
1152 | } | |
1153 | } | |
1154 | recv_msg->user_msg_data = user_msg_data; | |
1155 | ||
1156 | if (supplied_smi) { | |
1157 | smi_msg = (struct ipmi_smi_msg *) supplied_smi; | |
1158 | } else { | |
1159 | smi_msg = ipmi_alloc_smi_msg(); | |
1160 | if (smi_msg == NULL) { | |
1161 | ipmi_free_recv_msg(recv_msg); | |
1162 | return -ENOMEM; | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | recv_msg->user = user; | |
393d2cc3 CM |
1167 | if (user) |
1168 | kref_get(&user->refcount); | |
1da177e4 LT |
1169 | recv_msg->msgid = msgid; |
1170 | /* Store the message to send in the receive message so timeout | |
1171 | responses can get the proper response data. */ | |
1172 | recv_msg->msg = *msg; | |
1173 | ||
1174 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
1175 | struct ipmi_system_interface_addr *smi_addr; | |
1176 | ||
1177 | if (msg->netfn & 1) { | |
1178 | /* Responses are not allowed to the SMI. */ | |
1179 | rv = -EINVAL; | |
1180 | goto out_err; | |
1181 | } | |
1182 | ||
1183 | smi_addr = (struct ipmi_system_interface_addr *) addr; | |
1184 | if (smi_addr->lun > 3) { | |
1185 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1186 | intf->sent_invalid_commands++; | |
1187 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1188 | rv = -EINVAL; | |
1189 | goto out_err; | |
1190 | } | |
1191 | ||
1192 | memcpy(&recv_msg->addr, smi_addr, sizeof(*smi_addr)); | |
1193 | ||
1194 | if ((msg->netfn == IPMI_NETFN_APP_REQUEST) | |
1195 | && ((msg->cmd == IPMI_SEND_MSG_CMD) | |
1196 | || (msg->cmd == IPMI_GET_MSG_CMD) | |
1197 | || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD))) | |
1198 | { | |
1199 | /* We don't let the user do these, since we manage | |
1200 | the sequence numbers. */ | |
1201 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1202 | intf->sent_invalid_commands++; | |
1203 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1204 | rv = -EINVAL; | |
1205 | goto out_err; | |
1206 | } | |
1207 | ||
1208 | if ((msg->data_len + 2) > IPMI_MAX_MSG_LENGTH) { | |
1209 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1210 | intf->sent_invalid_commands++; | |
1211 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1212 | rv = -EMSGSIZE; | |
1213 | goto out_err; | |
1214 | } | |
1215 | ||
1216 | smi_msg->data[0] = (msg->netfn << 2) | (smi_addr->lun & 0x3); | |
1217 | smi_msg->data[1] = msg->cmd; | |
1218 | smi_msg->msgid = msgid; | |
1219 | smi_msg->user_data = recv_msg; | |
1220 | if (msg->data_len > 0) | |
1221 | memcpy(&(smi_msg->data[2]), msg->data, msg->data_len); | |
1222 | smi_msg->data_size = msg->data_len + 2; | |
1223 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1224 | intf->sent_local_commands++; | |
1225 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1226 | } else if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE) | |
1227 | || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) | |
1228 | { | |
1229 | struct ipmi_ipmb_addr *ipmb_addr; | |
1230 | unsigned char ipmb_seq; | |
1231 | long seqid; | |
1232 | int broadcast = 0; | |
1233 | ||
9c101fd4 KZ |
1234 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
1235 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1da177e4 LT |
1236 | intf->sent_invalid_commands++; |
1237 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1238 | rv = -EINVAL; | |
1239 | goto out_err; | |
1240 | } | |
1241 | ||
1242 | if (intf->channels[addr->channel].medium | |
1243 | != IPMI_CHANNEL_MEDIUM_IPMB) | |
1244 | { | |
1245 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1246 | intf->sent_invalid_commands++; | |
1247 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1248 | rv = -EINVAL; | |
1249 | goto out_err; | |
1250 | } | |
1251 | ||
1252 | if (retries < 0) { | |
1253 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) | |
1254 | retries = 0; /* Don't retry broadcasts. */ | |
1255 | else | |
1256 | retries = 4; | |
1257 | } | |
1258 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) { | |
1259 | /* Broadcasts add a zero at the beginning of the | |
1260 | message, but otherwise is the same as an IPMB | |
1261 | address. */ | |
1262 | addr->addr_type = IPMI_IPMB_ADDR_TYPE; | |
1263 | broadcast = 1; | |
1264 | } | |
1265 | ||
1266 | ||
1267 | /* Default to 1 second retries. */ | |
1268 | if (retry_time_ms == 0) | |
1269 | retry_time_ms = 1000; | |
1270 | ||
1271 | /* 9 for the header and 1 for the checksum, plus | |
1272 | possibly one for the broadcast. */ | |
1273 | if ((msg->data_len + 10 + broadcast) > IPMI_MAX_MSG_LENGTH) { | |
1274 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1275 | intf->sent_invalid_commands++; | |
1276 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1277 | rv = -EMSGSIZE; | |
1278 | goto out_err; | |
1279 | } | |
1280 | ||
1281 | ipmb_addr = (struct ipmi_ipmb_addr *) addr; | |
1282 | if (ipmb_addr->lun > 3) { | |
1283 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1284 | intf->sent_invalid_commands++; | |
1285 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1286 | rv = -EINVAL; | |
1287 | goto out_err; | |
1288 | } | |
1289 | ||
1290 | memcpy(&recv_msg->addr, ipmb_addr, sizeof(*ipmb_addr)); | |
1291 | ||
1292 | if (recv_msg->msg.netfn & 0x1) { | |
1293 | /* It's a response, so use the user's sequence | |
1294 | from msgid. */ | |
1295 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1296 | intf->sent_ipmb_responses++; | |
1297 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1298 | format_ipmb_msg(smi_msg, msg, ipmb_addr, msgid, | |
1299 | msgid, broadcast, | |
1300 | source_address, source_lun); | |
1301 | ||
1302 | /* Save the receive message so we can use it | |
1303 | to deliver the response. */ | |
1304 | smi_msg->user_data = recv_msg; | |
1305 | } else { | |
1306 | /* It's a command, so get a sequence for it. */ | |
1307 | ||
1308 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1309 | ||
1310 | spin_lock(&intf->counter_lock); | |
1311 | intf->sent_ipmb_commands++; | |
1312 | spin_unlock(&intf->counter_lock); | |
1313 | ||
1314 | /* Create a sequence number with a 1 second | |
1315 | timeout and 4 retries. */ | |
1316 | rv = intf_next_seq(intf, | |
1317 | recv_msg, | |
1318 | retry_time_ms, | |
1319 | retries, | |
1320 | broadcast, | |
1321 | &ipmb_seq, | |
1322 | &seqid); | |
1323 | if (rv) { | |
1324 | /* We have used up all the sequence numbers, | |
1325 | probably, so abort. */ | |
1326 | spin_unlock_irqrestore(&(intf->seq_lock), | |
1327 | flags); | |
1328 | goto out_err; | |
1329 | } | |
1330 | ||
1331 | /* Store the sequence number in the message, | |
1332 | so that when the send message response | |
1333 | comes back we can start the timer. */ | |
1334 | format_ipmb_msg(smi_msg, msg, ipmb_addr, | |
1335 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1336 | ipmb_seq, broadcast, | |
1337 | source_address, source_lun); | |
1338 | ||
1339 | /* Copy the message into the recv message data, so we | |
1340 | can retransmit it later if necessary. */ | |
1341 | memcpy(recv_msg->msg_data, smi_msg->data, | |
1342 | smi_msg->data_size); | |
1343 | recv_msg->msg.data = recv_msg->msg_data; | |
1344 | recv_msg->msg.data_len = smi_msg->data_size; | |
1345 | ||
1346 | /* We don't unlock until here, because we need | |
1347 | to copy the completed message into the | |
1348 | recv_msg before we release the lock. | |
1349 | Otherwise, race conditions may bite us. I | |
1350 | know that's pretty paranoid, but I prefer | |
1351 | to be correct. */ | |
1352 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
1353 | } | |
1354 | } else if (addr->addr_type == IPMI_LAN_ADDR_TYPE) { | |
1355 | struct ipmi_lan_addr *lan_addr; | |
1356 | unsigned char ipmb_seq; | |
1357 | long seqid; | |
1358 | ||
12fc1d7b | 1359 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
1da177e4 LT |
1360 | spin_lock_irqsave(&intf->counter_lock, flags); |
1361 | intf->sent_invalid_commands++; | |
1362 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1363 | rv = -EINVAL; | |
1364 | goto out_err; | |
1365 | } | |
1366 | ||
1367 | if ((intf->channels[addr->channel].medium | |
1368 | != IPMI_CHANNEL_MEDIUM_8023LAN) | |
1369 | && (intf->channels[addr->channel].medium | |
1370 | != IPMI_CHANNEL_MEDIUM_ASYNC)) | |
1371 | { | |
1372 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1373 | intf->sent_invalid_commands++; | |
1374 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1375 | rv = -EINVAL; | |
1376 | goto out_err; | |
1377 | } | |
1378 | ||
1379 | retries = 4; | |
1380 | ||
1381 | /* Default to 1 second retries. */ | |
1382 | if (retry_time_ms == 0) | |
1383 | retry_time_ms = 1000; | |
1384 | ||
1385 | /* 11 for the header and 1 for the checksum. */ | |
1386 | if ((msg->data_len + 12) > IPMI_MAX_MSG_LENGTH) { | |
1387 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1388 | intf->sent_invalid_commands++; | |
1389 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1390 | rv = -EMSGSIZE; | |
1391 | goto out_err; | |
1392 | } | |
1393 | ||
1394 | lan_addr = (struct ipmi_lan_addr *) addr; | |
1395 | if (lan_addr->lun > 3) { | |
1396 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1397 | intf->sent_invalid_commands++; | |
1398 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1399 | rv = -EINVAL; | |
1400 | goto out_err; | |
1401 | } | |
1402 | ||
1403 | memcpy(&recv_msg->addr, lan_addr, sizeof(*lan_addr)); | |
1404 | ||
1405 | if (recv_msg->msg.netfn & 0x1) { | |
1406 | /* It's a response, so use the user's sequence | |
1407 | from msgid. */ | |
1408 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1409 | intf->sent_lan_responses++; | |
1410 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1411 | format_lan_msg(smi_msg, msg, lan_addr, msgid, | |
1412 | msgid, source_lun); | |
1413 | ||
1414 | /* Save the receive message so we can use it | |
1415 | to deliver the response. */ | |
1416 | smi_msg->user_data = recv_msg; | |
1417 | } else { | |
1418 | /* It's a command, so get a sequence for it. */ | |
1419 | ||
1420 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1421 | ||
1422 | spin_lock(&intf->counter_lock); | |
1423 | intf->sent_lan_commands++; | |
1424 | spin_unlock(&intf->counter_lock); | |
1425 | ||
1426 | /* Create a sequence number with a 1 second | |
1427 | timeout and 4 retries. */ | |
1428 | rv = intf_next_seq(intf, | |
1429 | recv_msg, | |
1430 | retry_time_ms, | |
1431 | retries, | |
1432 | 0, | |
1433 | &ipmb_seq, | |
1434 | &seqid); | |
1435 | if (rv) { | |
1436 | /* We have used up all the sequence numbers, | |
1437 | probably, so abort. */ | |
1438 | spin_unlock_irqrestore(&(intf->seq_lock), | |
1439 | flags); | |
1440 | goto out_err; | |
1441 | } | |
1442 | ||
1443 | /* Store the sequence number in the message, | |
1444 | so that when the send message response | |
1445 | comes back we can start the timer. */ | |
1446 | format_lan_msg(smi_msg, msg, lan_addr, | |
1447 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1448 | ipmb_seq, source_lun); | |
1449 | ||
1450 | /* Copy the message into the recv message data, so we | |
1451 | can retransmit it later if necessary. */ | |
1452 | memcpy(recv_msg->msg_data, smi_msg->data, | |
1453 | smi_msg->data_size); | |
1454 | recv_msg->msg.data = recv_msg->msg_data; | |
1455 | recv_msg->msg.data_len = smi_msg->data_size; | |
1456 | ||
1457 | /* We don't unlock until here, because we need | |
1458 | to copy the completed message into the | |
1459 | recv_msg before we release the lock. | |
1460 | Otherwise, race conditions may bite us. I | |
1461 | know that's pretty paranoid, but I prefer | |
1462 | to be correct. */ | |
1463 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
1464 | } | |
1465 | } else { | |
1466 | /* Unknown address type. */ | |
1467 | spin_lock_irqsave(&intf->counter_lock, flags); | |
1468 | intf->sent_invalid_commands++; | |
1469 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1470 | rv = -EINVAL; | |
1471 | goto out_err; | |
1472 | } | |
1473 | ||
1474 | #ifdef DEBUG_MSGING | |
1475 | { | |
1476 | int m; | |
e8b33617 | 1477 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
1478 | printk(" %2.2x", smi_msg->data[m]); |
1479 | printk("\n"); | |
1480 | } | |
1481 | #endif | |
1482 | intf->handlers->sender(intf->send_info, smi_msg, priority); | |
1483 | ||
1484 | return 0; | |
1485 | ||
1486 | out_err: | |
1487 | ipmi_free_smi_msg(smi_msg); | |
1488 | ipmi_free_recv_msg(recv_msg); | |
1489 | return rv; | |
1490 | } | |
1491 | ||
c14979b9 CM |
1492 | static int check_addr(ipmi_smi_t intf, |
1493 | struct ipmi_addr *addr, | |
1494 | unsigned char *saddr, | |
1495 | unsigned char *lun) | |
1496 | { | |
1497 | if (addr->channel >= IPMI_MAX_CHANNELS) | |
1498 | return -EINVAL; | |
1499 | *lun = intf->channels[addr->channel].lun; | |
1500 | *saddr = intf->channels[addr->channel].address; | |
1501 | return 0; | |
1502 | } | |
1503 | ||
1da177e4 LT |
1504 | int ipmi_request_settime(ipmi_user_t user, |
1505 | struct ipmi_addr *addr, | |
1506 | long msgid, | |
1507 | struct kernel_ipmi_msg *msg, | |
1508 | void *user_msg_data, | |
1509 | int priority, | |
1510 | int retries, | |
1511 | unsigned int retry_time_ms) | |
1512 | { | |
c14979b9 CM |
1513 | unsigned char saddr, lun; |
1514 | int rv; | |
1515 | ||
8a3628d5 | 1516 | if (!user) |
56a55ec6 | 1517 | return -EINVAL; |
c14979b9 CM |
1518 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1519 | if (rv) | |
1520 | return rv; | |
1da177e4 LT |
1521 | return i_ipmi_request(user, |
1522 | user->intf, | |
1523 | addr, | |
1524 | msgid, | |
1525 | msg, | |
1526 | user_msg_data, | |
1527 | NULL, NULL, | |
1528 | priority, | |
c14979b9 CM |
1529 | saddr, |
1530 | lun, | |
1da177e4 LT |
1531 | retries, |
1532 | retry_time_ms); | |
1533 | } | |
1534 | ||
1535 | int ipmi_request_supply_msgs(ipmi_user_t user, | |
1536 | struct ipmi_addr *addr, | |
1537 | long msgid, | |
1538 | struct kernel_ipmi_msg *msg, | |
1539 | void *user_msg_data, | |
1540 | void *supplied_smi, | |
1541 | struct ipmi_recv_msg *supplied_recv, | |
1542 | int priority) | |
1543 | { | |
c14979b9 CM |
1544 | unsigned char saddr, lun; |
1545 | int rv; | |
1546 | ||
8a3628d5 | 1547 | if (!user) |
56a55ec6 | 1548 | return -EINVAL; |
c14979b9 CM |
1549 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1550 | if (rv) | |
1551 | return rv; | |
1da177e4 LT |
1552 | return i_ipmi_request(user, |
1553 | user->intf, | |
1554 | addr, | |
1555 | msgid, | |
1556 | msg, | |
1557 | user_msg_data, | |
1558 | supplied_smi, | |
1559 | supplied_recv, | |
1560 | priority, | |
c14979b9 CM |
1561 | saddr, |
1562 | lun, | |
1da177e4 LT |
1563 | -1, 0); |
1564 | } | |
1565 | ||
1566 | static int ipmb_file_read_proc(char *page, char **start, off_t off, | |
1567 | int count, int *eof, void *data) | |
1568 | { | |
1569 | char *out = (char *) page; | |
1570 | ipmi_smi_t intf = data; | |
c14979b9 | 1571 | int i; |
8a3628d5 | 1572 | int rv = 0; |
1da177e4 | 1573 | |
e8b33617 | 1574 | for (i = 0; i < IPMI_MAX_CHANNELS; i++) |
c14979b9 CM |
1575 | rv += sprintf(out+rv, "%x ", intf->channels[i].address); |
1576 | out[rv-1] = '\n'; /* Replace the final space with a newline */ | |
1577 | out[rv] = '\0'; | |
1578 | rv++; | |
1579 | return rv; | |
1da177e4 LT |
1580 | } |
1581 | ||
1582 | static int version_file_read_proc(char *page, char **start, off_t off, | |
1583 | int count, int *eof, void *data) | |
1584 | { | |
1585 | char *out = (char *) page; | |
1586 | ipmi_smi_t intf = data; | |
1587 | ||
1588 | return sprintf(out, "%d.%d\n", | |
50c812b2 CM |
1589 | ipmi_version_major(&intf->bmc->id), |
1590 | ipmi_version_minor(&intf->bmc->id)); | |
1da177e4 LT |
1591 | } |
1592 | ||
1593 | static int stat_file_read_proc(char *page, char **start, off_t off, | |
1594 | int count, int *eof, void *data) | |
1595 | { | |
1596 | char *out = (char *) page; | |
1597 | ipmi_smi_t intf = data; | |
1598 | ||
1599 | out += sprintf(out, "sent_invalid_commands: %d\n", | |
1600 | intf->sent_invalid_commands); | |
1601 | out += sprintf(out, "sent_local_commands: %d\n", | |
1602 | intf->sent_local_commands); | |
1603 | out += sprintf(out, "handled_local_responses: %d\n", | |
1604 | intf->handled_local_responses); | |
1605 | out += sprintf(out, "unhandled_local_responses: %d\n", | |
1606 | intf->unhandled_local_responses); | |
1607 | out += sprintf(out, "sent_ipmb_commands: %d\n", | |
1608 | intf->sent_ipmb_commands); | |
1609 | out += sprintf(out, "sent_ipmb_command_errs: %d\n", | |
1610 | intf->sent_ipmb_command_errs); | |
1611 | out += sprintf(out, "retransmitted_ipmb_commands: %d\n", | |
1612 | intf->retransmitted_ipmb_commands); | |
1613 | out += sprintf(out, "timed_out_ipmb_commands: %d\n", | |
1614 | intf->timed_out_ipmb_commands); | |
1615 | out += sprintf(out, "timed_out_ipmb_broadcasts: %d\n", | |
1616 | intf->timed_out_ipmb_broadcasts); | |
1617 | out += sprintf(out, "sent_ipmb_responses: %d\n", | |
1618 | intf->sent_ipmb_responses); | |
1619 | out += sprintf(out, "handled_ipmb_responses: %d\n", | |
1620 | intf->handled_ipmb_responses); | |
1621 | out += sprintf(out, "invalid_ipmb_responses: %d\n", | |
1622 | intf->invalid_ipmb_responses); | |
1623 | out += sprintf(out, "unhandled_ipmb_responses: %d\n", | |
1624 | intf->unhandled_ipmb_responses); | |
1625 | out += sprintf(out, "sent_lan_commands: %d\n", | |
1626 | intf->sent_lan_commands); | |
1627 | out += sprintf(out, "sent_lan_command_errs: %d\n", | |
1628 | intf->sent_lan_command_errs); | |
1629 | out += sprintf(out, "retransmitted_lan_commands: %d\n", | |
1630 | intf->retransmitted_lan_commands); | |
1631 | out += sprintf(out, "timed_out_lan_commands: %d\n", | |
1632 | intf->timed_out_lan_commands); | |
1633 | out += sprintf(out, "sent_lan_responses: %d\n", | |
1634 | intf->sent_lan_responses); | |
1635 | out += sprintf(out, "handled_lan_responses: %d\n", | |
1636 | intf->handled_lan_responses); | |
1637 | out += sprintf(out, "invalid_lan_responses: %d\n", | |
1638 | intf->invalid_lan_responses); | |
1639 | out += sprintf(out, "unhandled_lan_responses: %d\n", | |
1640 | intf->unhandled_lan_responses); | |
1641 | out += sprintf(out, "handled_commands: %d\n", | |
1642 | intf->handled_commands); | |
1643 | out += sprintf(out, "invalid_commands: %d\n", | |
1644 | intf->invalid_commands); | |
1645 | out += sprintf(out, "unhandled_commands: %d\n", | |
1646 | intf->unhandled_commands); | |
1647 | out += sprintf(out, "invalid_events: %d\n", | |
1648 | intf->invalid_events); | |
1649 | out += sprintf(out, "events: %d\n", | |
1650 | intf->events); | |
1651 | ||
1652 | return (out - ((char *) page)); | |
1653 | } | |
1654 | ||
1655 | int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, | |
1656 | read_proc_t *read_proc, write_proc_t *write_proc, | |
1657 | void *data, struct module *owner) | |
1658 | { | |
1da177e4 | 1659 | int rv = 0; |
3b625943 CM |
1660 | #ifdef CONFIG_PROC_FS |
1661 | struct proc_dir_entry *file; | |
1da177e4 LT |
1662 | struct ipmi_proc_entry *entry; |
1663 | ||
1664 | /* Create a list element. */ | |
1665 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); | |
1666 | if (!entry) | |
1667 | return -ENOMEM; | |
1668 | entry->name = kmalloc(strlen(name)+1, GFP_KERNEL); | |
1669 | if (!entry->name) { | |
1670 | kfree(entry); | |
1671 | return -ENOMEM; | |
1672 | } | |
1673 | strcpy(entry->name, name); | |
1674 | ||
1675 | file = create_proc_entry(name, 0, smi->proc_dir); | |
1676 | if (!file) { | |
1677 | kfree(entry->name); | |
1678 | kfree(entry); | |
1679 | rv = -ENOMEM; | |
1680 | } else { | |
1681 | file->nlink = 1; | |
1682 | file->data = data; | |
1683 | file->read_proc = read_proc; | |
1684 | file->write_proc = write_proc; | |
1685 | file->owner = owner; | |
1686 | ||
3b625943 | 1687 | spin_lock(&smi->proc_entry_lock); |
1da177e4 LT |
1688 | /* Stick it on the list. */ |
1689 | entry->next = smi->proc_entries; | |
1690 | smi->proc_entries = entry; | |
3b625943 | 1691 | spin_unlock(&smi->proc_entry_lock); |
1da177e4 | 1692 | } |
3b625943 | 1693 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
1694 | |
1695 | return rv; | |
1696 | } | |
1697 | ||
1698 | static int add_proc_entries(ipmi_smi_t smi, int num) | |
1699 | { | |
1700 | int rv = 0; | |
1701 | ||
3b625943 | 1702 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
1703 | sprintf(smi->proc_dir_name, "%d", num); |
1704 | smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); | |
1705 | if (!smi->proc_dir) | |
1706 | rv = -ENOMEM; | |
1707 | else { | |
1708 | smi->proc_dir->owner = THIS_MODULE; | |
1709 | } | |
1710 | ||
1711 | if (rv == 0) | |
1712 | rv = ipmi_smi_add_proc_entry(smi, "stats", | |
1713 | stat_file_read_proc, NULL, | |
1714 | smi, THIS_MODULE); | |
1715 | ||
1716 | if (rv == 0) | |
1717 | rv = ipmi_smi_add_proc_entry(smi, "ipmb", | |
1718 | ipmb_file_read_proc, NULL, | |
1719 | smi, THIS_MODULE); | |
1720 | ||
1721 | if (rv == 0) | |
1722 | rv = ipmi_smi_add_proc_entry(smi, "version", | |
1723 | version_file_read_proc, NULL, | |
1724 | smi, THIS_MODULE); | |
3b625943 | 1725 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
1726 | |
1727 | return rv; | |
1728 | } | |
1729 | ||
1730 | static void remove_proc_entries(ipmi_smi_t smi) | |
1731 | { | |
3b625943 | 1732 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
1733 | struct ipmi_proc_entry *entry; |
1734 | ||
3b625943 | 1735 | spin_lock(&smi->proc_entry_lock); |
1da177e4 LT |
1736 | while (smi->proc_entries) { |
1737 | entry = smi->proc_entries; | |
1738 | smi->proc_entries = entry->next; | |
1739 | ||
1740 | remove_proc_entry(entry->name, smi->proc_dir); | |
1741 | kfree(entry->name); | |
1742 | kfree(entry); | |
1743 | } | |
3b625943 | 1744 | spin_unlock(&smi->proc_entry_lock); |
1da177e4 | 1745 | remove_proc_entry(smi->proc_dir_name, proc_ipmi_root); |
3b625943 | 1746 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
1747 | } |
1748 | ||
50c812b2 CM |
1749 | static int __find_bmc_guid(struct device *dev, void *data) |
1750 | { | |
1751 | unsigned char *id = data; | |
1752 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1753 | return memcmp(bmc->guid, id, 16) == 0; | |
1754 | } | |
1755 | ||
1756 | static struct bmc_device *ipmi_find_bmc_guid(struct device_driver *drv, | |
1757 | unsigned char *guid) | |
1758 | { | |
1759 | struct device *dev; | |
1760 | ||
1761 | dev = driver_find_device(drv, NULL, guid, __find_bmc_guid); | |
1762 | if (dev) | |
1763 | return dev_get_drvdata(dev); | |
1764 | else | |
1765 | return NULL; | |
1766 | } | |
1767 | ||
1768 | struct prod_dev_id { | |
1769 | unsigned int product_id; | |
1770 | unsigned char device_id; | |
1771 | }; | |
1772 | ||
1773 | static int __find_bmc_prod_dev_id(struct device *dev, void *data) | |
1774 | { | |
1775 | struct prod_dev_id *id = data; | |
1776 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1777 | ||
1778 | return (bmc->id.product_id == id->product_id | |
1779 | && bmc->id.product_id == id->product_id | |
1780 | && bmc->id.device_id == id->device_id); | |
1781 | } | |
1782 | ||
1783 | static struct bmc_device *ipmi_find_bmc_prod_dev_id( | |
1784 | struct device_driver *drv, | |
1785 | unsigned char product_id, unsigned char device_id) | |
1786 | { | |
1787 | struct prod_dev_id id = { | |
1788 | .product_id = product_id, | |
1789 | .device_id = device_id, | |
1790 | }; | |
1791 | struct device *dev; | |
1792 | ||
1793 | dev = driver_find_device(drv, NULL, &id, __find_bmc_prod_dev_id); | |
1794 | if (dev) | |
1795 | return dev_get_drvdata(dev); | |
1796 | else | |
1797 | return NULL; | |
1798 | } | |
1799 | ||
1800 | static ssize_t device_id_show(struct device *dev, | |
1801 | struct device_attribute *attr, | |
1802 | char *buf) | |
1803 | { | |
1804 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1805 | ||
1806 | return snprintf(buf, 10, "%u\n", bmc->id.device_id); | |
1807 | } | |
1808 | ||
1809 | static ssize_t provides_dev_sdrs_show(struct device *dev, | |
1810 | struct device_attribute *attr, | |
1811 | char *buf) | |
1812 | { | |
1813 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1814 | ||
1815 | return snprintf(buf, 10, "%u\n", | |
1816 | bmc->id.device_revision && 0x80 >> 7); | |
1817 | } | |
1818 | ||
1819 | static ssize_t revision_show(struct device *dev, struct device_attribute *attr, | |
1820 | char *buf) | |
1821 | { | |
1822 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1823 | ||
1824 | return snprintf(buf, 20, "%u\n", | |
1825 | bmc->id.device_revision && 0x0F); | |
1826 | } | |
1827 | ||
1828 | static ssize_t firmware_rev_show(struct device *dev, | |
1829 | struct device_attribute *attr, | |
1830 | char *buf) | |
1831 | { | |
1832 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1833 | ||
1834 | return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1, | |
1835 | bmc->id.firmware_revision_2); | |
1836 | } | |
1837 | ||
1838 | static ssize_t ipmi_version_show(struct device *dev, | |
1839 | struct device_attribute *attr, | |
1840 | char *buf) | |
1841 | { | |
1842 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1843 | ||
1844 | return snprintf(buf, 20, "%u.%u\n", | |
1845 | ipmi_version_major(&bmc->id), | |
1846 | ipmi_version_minor(&bmc->id)); | |
1847 | } | |
1848 | ||
1849 | static ssize_t add_dev_support_show(struct device *dev, | |
1850 | struct device_attribute *attr, | |
1851 | char *buf) | |
1852 | { | |
1853 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1854 | ||
1855 | return snprintf(buf, 10, "0x%02x\n", | |
1856 | bmc->id.additional_device_support); | |
1857 | } | |
1858 | ||
1859 | static ssize_t manufacturer_id_show(struct device *dev, | |
1860 | struct device_attribute *attr, | |
1861 | char *buf) | |
1862 | { | |
1863 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1864 | ||
1865 | return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id); | |
1866 | } | |
1867 | ||
1868 | static ssize_t product_id_show(struct device *dev, | |
1869 | struct device_attribute *attr, | |
1870 | char *buf) | |
1871 | { | |
1872 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1873 | ||
1874 | return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id); | |
1875 | } | |
1876 | ||
1877 | static ssize_t aux_firmware_rev_show(struct device *dev, | |
1878 | struct device_attribute *attr, | |
1879 | char *buf) | |
1880 | { | |
1881 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1882 | ||
1883 | return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n", | |
1884 | bmc->id.aux_firmware_revision[3], | |
1885 | bmc->id.aux_firmware_revision[2], | |
1886 | bmc->id.aux_firmware_revision[1], | |
1887 | bmc->id.aux_firmware_revision[0]); | |
1888 | } | |
1889 | ||
1890 | static ssize_t guid_show(struct device *dev, struct device_attribute *attr, | |
1891 | char *buf) | |
1892 | { | |
1893 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
1894 | ||
1895 | return snprintf(buf, 100, "%Lx%Lx\n", | |
1896 | (long long) bmc->guid[0], | |
1897 | (long long) bmc->guid[8]); | |
1898 | } | |
1899 | ||
1900 | static void | |
1901 | cleanup_bmc_device(struct kref *ref) | |
1902 | { | |
1903 | struct bmc_device *bmc; | |
1904 | ||
1905 | bmc = container_of(ref, struct bmc_device, refcount); | |
1906 | ||
1907 | device_remove_file(&bmc->dev->dev, | |
1908 | &bmc->device_id_attr); | |
1909 | device_remove_file(&bmc->dev->dev, | |
1910 | &bmc->provides_dev_sdrs_attr); | |
1911 | device_remove_file(&bmc->dev->dev, | |
1912 | &bmc->revision_attr); | |
1913 | device_remove_file(&bmc->dev->dev, | |
1914 | &bmc->firmware_rev_attr); | |
1915 | device_remove_file(&bmc->dev->dev, | |
1916 | &bmc->version_attr); | |
1917 | device_remove_file(&bmc->dev->dev, | |
1918 | &bmc->add_dev_support_attr); | |
1919 | device_remove_file(&bmc->dev->dev, | |
1920 | &bmc->manufacturer_id_attr); | |
1921 | device_remove_file(&bmc->dev->dev, | |
1922 | &bmc->product_id_attr); | |
1923 | if (bmc->id.aux_firmware_revision_set) | |
1924 | device_remove_file(&bmc->dev->dev, | |
1925 | &bmc->aux_firmware_rev_attr); | |
1926 | if (bmc->guid_set) | |
1927 | device_remove_file(&bmc->dev->dev, | |
1928 | &bmc->guid_attr); | |
1929 | platform_device_unregister(bmc->dev); | |
1930 | kfree(bmc); | |
1931 | } | |
1932 | ||
1933 | static void ipmi_bmc_unregister(ipmi_smi_t intf) | |
1934 | { | |
1935 | struct bmc_device *bmc = intf->bmc; | |
1936 | ||
1937 | sysfs_remove_link(&intf->si_dev->kobj, "bmc"); | |
1938 | if (intf->my_dev_name) { | |
1939 | sysfs_remove_link(&bmc->dev->dev.kobj, intf->my_dev_name); | |
1940 | kfree(intf->my_dev_name); | |
1941 | intf->my_dev_name = NULL; | |
1942 | } | |
1943 | ||
1944 | mutex_lock(&ipmidriver_mutex); | |
1945 | kref_put(&bmc->refcount, cleanup_bmc_device); | |
1946 | mutex_unlock(&ipmidriver_mutex); | |
1947 | } | |
1948 | ||
1949 | static int ipmi_bmc_register(ipmi_smi_t intf) | |
1950 | { | |
1951 | int rv; | |
1952 | struct bmc_device *bmc = intf->bmc; | |
1953 | struct bmc_device *old_bmc; | |
1954 | int size; | |
1955 | char dummy[1]; | |
1956 | ||
1957 | mutex_lock(&ipmidriver_mutex); | |
1958 | ||
1959 | /* | |
1960 | * Try to find if there is an bmc_device struct | |
1961 | * representing the interfaced BMC already | |
1962 | */ | |
1963 | if (bmc->guid_set) | |
1964 | old_bmc = ipmi_find_bmc_guid(&ipmidriver, bmc->guid); | |
1965 | else | |
1966 | old_bmc = ipmi_find_bmc_prod_dev_id(&ipmidriver, | |
1967 | bmc->id.product_id, | |
1968 | bmc->id.device_id); | |
1969 | ||
1970 | /* | |
1971 | * If there is already an bmc_device, free the new one, | |
1972 | * otherwise register the new BMC device | |
1973 | */ | |
1974 | if (old_bmc) { | |
1975 | kfree(bmc); | |
1976 | intf->bmc = old_bmc; | |
1977 | bmc = old_bmc; | |
1978 | ||
1979 | kref_get(&bmc->refcount); | |
1980 | mutex_unlock(&ipmidriver_mutex); | |
1981 | ||
1982 | printk(KERN_INFO | |
1983 | "ipmi: interfacing existing BMC (man_id: 0x%6.6x," | |
1984 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
1985 | bmc->id.manufacturer_id, | |
1986 | bmc->id.product_id, | |
1987 | bmc->id.device_id); | |
1988 | } else { | |
1989 | bmc->dev = platform_device_alloc("ipmi_bmc", | |
1990 | bmc->id.device_id); | |
8a3628d5 | 1991 | if (!bmc->dev) { |
50c812b2 CM |
1992 | printk(KERN_ERR |
1993 | "ipmi_msghandler:" | |
1994 | " Unable to allocate platform device\n"); | |
1995 | return -ENOMEM; | |
1996 | } | |
1997 | bmc->dev->dev.driver = &ipmidriver; | |
1998 | dev_set_drvdata(&bmc->dev->dev, bmc); | |
1999 | kref_init(&bmc->refcount); | |
2000 | ||
2001 | rv = platform_device_register(bmc->dev); | |
2002 | mutex_unlock(&ipmidriver_mutex); | |
2003 | if (rv) { | |
2004 | printk(KERN_ERR | |
2005 | "ipmi_msghandler:" | |
2006 | " Unable to register bmc device: %d\n", | |
2007 | rv); | |
2008 | /* Don't go to out_err, you can only do that if | |
2009 | the device is registered already. */ | |
2010 | return rv; | |
2011 | } | |
2012 | ||
2013 | bmc->device_id_attr.attr.name = "device_id"; | |
2014 | bmc->device_id_attr.attr.owner = THIS_MODULE; | |
2015 | bmc->device_id_attr.attr.mode = S_IRUGO; | |
2016 | bmc->device_id_attr.show = device_id_show; | |
2017 | ||
2018 | bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs"; | |
2019 | bmc->provides_dev_sdrs_attr.attr.owner = THIS_MODULE; | |
2020 | bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO; | |
2021 | bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show; | |
2022 | ||
2023 | ||
2024 | bmc->revision_attr.attr.name = "revision"; | |
2025 | bmc->revision_attr.attr.owner = THIS_MODULE; | |
2026 | bmc->revision_attr.attr.mode = S_IRUGO; | |
2027 | bmc->revision_attr.show = revision_show; | |
2028 | ||
2029 | bmc->firmware_rev_attr.attr.name = "firmware_revision"; | |
2030 | bmc->firmware_rev_attr.attr.owner = THIS_MODULE; | |
2031 | bmc->firmware_rev_attr.attr.mode = S_IRUGO; | |
2032 | bmc->firmware_rev_attr.show = firmware_rev_show; | |
2033 | ||
2034 | bmc->version_attr.attr.name = "ipmi_version"; | |
2035 | bmc->version_attr.attr.owner = THIS_MODULE; | |
2036 | bmc->version_attr.attr.mode = S_IRUGO; | |
2037 | bmc->version_attr.show = ipmi_version_show; | |
2038 | ||
2039 | bmc->add_dev_support_attr.attr.name | |
2040 | = "additional_device_support"; | |
2041 | bmc->add_dev_support_attr.attr.owner = THIS_MODULE; | |
2042 | bmc->add_dev_support_attr.attr.mode = S_IRUGO; | |
2043 | bmc->add_dev_support_attr.show = add_dev_support_show; | |
2044 | ||
2045 | bmc->manufacturer_id_attr.attr.name = "manufacturer_id"; | |
2046 | bmc->manufacturer_id_attr.attr.owner = THIS_MODULE; | |
2047 | bmc->manufacturer_id_attr.attr.mode = S_IRUGO; | |
2048 | bmc->manufacturer_id_attr.show = manufacturer_id_show; | |
2049 | ||
2050 | bmc->product_id_attr.attr.name = "product_id"; | |
2051 | bmc->product_id_attr.attr.owner = THIS_MODULE; | |
2052 | bmc->product_id_attr.attr.mode = S_IRUGO; | |
2053 | bmc->product_id_attr.show = product_id_show; | |
2054 | ||
2055 | bmc->guid_attr.attr.name = "guid"; | |
2056 | bmc->guid_attr.attr.owner = THIS_MODULE; | |
2057 | bmc->guid_attr.attr.mode = S_IRUGO; | |
2058 | bmc->guid_attr.show = guid_show; | |
2059 | ||
2060 | bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision"; | |
2061 | bmc->aux_firmware_rev_attr.attr.owner = THIS_MODULE; | |
2062 | bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO; | |
2063 | bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show; | |
2064 | ||
2065 | device_create_file(&bmc->dev->dev, | |
2066 | &bmc->device_id_attr); | |
2067 | device_create_file(&bmc->dev->dev, | |
2068 | &bmc->provides_dev_sdrs_attr); | |
2069 | device_create_file(&bmc->dev->dev, | |
2070 | &bmc->revision_attr); | |
2071 | device_create_file(&bmc->dev->dev, | |
2072 | &bmc->firmware_rev_attr); | |
2073 | device_create_file(&bmc->dev->dev, | |
2074 | &bmc->version_attr); | |
2075 | device_create_file(&bmc->dev->dev, | |
2076 | &bmc->add_dev_support_attr); | |
2077 | device_create_file(&bmc->dev->dev, | |
2078 | &bmc->manufacturer_id_attr); | |
2079 | device_create_file(&bmc->dev->dev, | |
2080 | &bmc->product_id_attr); | |
2081 | if (bmc->id.aux_firmware_revision_set) | |
2082 | device_create_file(&bmc->dev->dev, | |
2083 | &bmc->aux_firmware_rev_attr); | |
2084 | if (bmc->guid_set) | |
2085 | device_create_file(&bmc->dev->dev, | |
2086 | &bmc->guid_attr); | |
2087 | ||
2088 | printk(KERN_INFO | |
2089 | "ipmi: Found new BMC (man_id: 0x%6.6x, " | |
2090 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
2091 | bmc->id.manufacturer_id, | |
2092 | bmc->id.product_id, | |
2093 | bmc->id.device_id); | |
2094 | } | |
2095 | ||
2096 | /* | |
2097 | * create symlink from system interface device to bmc device | |
2098 | * and back. | |
2099 | */ | |
2100 | rv = sysfs_create_link(&intf->si_dev->kobj, | |
2101 | &bmc->dev->dev.kobj, "bmc"); | |
2102 | if (rv) { | |
2103 | printk(KERN_ERR | |
2104 | "ipmi_msghandler: Unable to create bmc symlink: %d\n", | |
2105 | rv); | |
2106 | goto out_err; | |
2107 | } | |
2108 | ||
2109 | size = snprintf(dummy, 0, "ipmi%d", intf->intf_num); | |
2110 | intf->my_dev_name = kmalloc(size+1, GFP_KERNEL); | |
2111 | if (!intf->my_dev_name) { | |
2112 | rv = -ENOMEM; | |
2113 | printk(KERN_ERR | |
2114 | "ipmi_msghandler: allocate link from BMC: %d\n", | |
2115 | rv); | |
2116 | goto out_err; | |
2117 | } | |
2118 | snprintf(intf->my_dev_name, size+1, "ipmi%d", intf->intf_num); | |
2119 | ||
2120 | rv = sysfs_create_link(&bmc->dev->dev.kobj, &intf->si_dev->kobj, | |
2121 | intf->my_dev_name); | |
2122 | if (rv) { | |
2123 | kfree(intf->my_dev_name); | |
2124 | intf->my_dev_name = NULL; | |
2125 | printk(KERN_ERR | |
2126 | "ipmi_msghandler:" | |
2127 | " Unable to create symlink to bmc: %d\n", | |
2128 | rv); | |
2129 | goto out_err; | |
2130 | } | |
2131 | ||
2132 | return 0; | |
2133 | ||
2134 | out_err: | |
2135 | ipmi_bmc_unregister(intf); | |
2136 | return rv; | |
2137 | } | |
2138 | ||
2139 | static int | |
2140 | send_guid_cmd(ipmi_smi_t intf, int chan) | |
2141 | { | |
2142 | struct kernel_ipmi_msg msg; | |
2143 | struct ipmi_system_interface_addr si; | |
2144 | ||
2145 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2146 | si.channel = IPMI_BMC_CHANNEL; | |
2147 | si.lun = 0; | |
2148 | ||
2149 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2150 | msg.cmd = IPMI_GET_DEVICE_GUID_CMD; | |
2151 | msg.data = NULL; | |
2152 | msg.data_len = 0; | |
2153 | return i_ipmi_request(NULL, | |
2154 | intf, | |
2155 | (struct ipmi_addr *) &si, | |
2156 | 0, | |
2157 | &msg, | |
2158 | intf, | |
2159 | NULL, | |
2160 | NULL, | |
2161 | 0, | |
2162 | intf->channels[0].address, | |
2163 | intf->channels[0].lun, | |
2164 | -1, 0); | |
2165 | } | |
2166 | ||
2167 | static void | |
2168 | guid_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) | |
2169 | { | |
2170 | if ((msg->addr.addr_type != IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
2171 | || (msg->msg.netfn != IPMI_NETFN_APP_RESPONSE) | |
2172 | || (msg->msg.cmd != IPMI_GET_DEVICE_GUID_CMD)) | |
2173 | /* Not for me */ | |
2174 | return; | |
2175 | ||
2176 | if (msg->msg.data[0] != 0) { | |
2177 | /* Error from getting the GUID, the BMC doesn't have one. */ | |
2178 | intf->bmc->guid_set = 0; | |
2179 | goto out; | |
2180 | } | |
2181 | ||
2182 | if (msg->msg.data_len < 17) { | |
2183 | intf->bmc->guid_set = 0; | |
2184 | printk(KERN_WARNING PFX | |
2185 | "guid_handler: The GUID response from the BMC was too" | |
2186 | " short, it was %d but should have been 17. Assuming" | |
2187 | " GUID is not available.\n", | |
2188 | msg->msg.data_len); | |
2189 | goto out; | |
2190 | } | |
2191 | ||
2192 | memcpy(intf->bmc->guid, msg->msg.data, 16); | |
2193 | intf->bmc->guid_set = 1; | |
2194 | out: | |
2195 | wake_up(&intf->waitq); | |
2196 | } | |
2197 | ||
2198 | static void | |
2199 | get_guid(ipmi_smi_t intf) | |
2200 | { | |
2201 | int rv; | |
2202 | ||
2203 | intf->bmc->guid_set = 0x2; | |
2204 | intf->null_user_handler = guid_handler; | |
2205 | rv = send_guid_cmd(intf, 0); | |
2206 | if (rv) | |
2207 | /* Send failed, no GUID available. */ | |
2208 | intf->bmc->guid_set = 0; | |
2209 | wait_event(intf->waitq, intf->bmc->guid_set != 2); | |
2210 | intf->null_user_handler = NULL; | |
2211 | } | |
2212 | ||
1da177e4 LT |
2213 | static int |
2214 | send_channel_info_cmd(ipmi_smi_t intf, int chan) | |
2215 | { | |
2216 | struct kernel_ipmi_msg msg; | |
2217 | unsigned char data[1]; | |
2218 | struct ipmi_system_interface_addr si; | |
2219 | ||
2220 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2221 | si.channel = IPMI_BMC_CHANNEL; | |
2222 | si.lun = 0; | |
2223 | ||
2224 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2225 | msg.cmd = IPMI_GET_CHANNEL_INFO_CMD; | |
2226 | msg.data = data; | |
2227 | msg.data_len = 1; | |
2228 | data[0] = chan; | |
2229 | return i_ipmi_request(NULL, | |
2230 | intf, | |
2231 | (struct ipmi_addr *) &si, | |
2232 | 0, | |
2233 | &msg, | |
56a55ec6 | 2234 | intf, |
1da177e4 LT |
2235 | NULL, |
2236 | NULL, | |
2237 | 0, | |
c14979b9 CM |
2238 | intf->channels[0].address, |
2239 | intf->channels[0].lun, | |
1da177e4 LT |
2240 | -1, 0); |
2241 | } | |
2242 | ||
2243 | static void | |
56a55ec6 | 2244 | channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 LT |
2245 | { |
2246 | int rv = 0; | |
2247 | int chan; | |
2248 | ||
56a55ec6 CM |
2249 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
2250 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
2251 | && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD)) | |
1da177e4 LT |
2252 | { |
2253 | /* It's the one we want */ | |
56a55ec6 | 2254 | if (msg->msg.data[0] != 0) { |
1da177e4 LT |
2255 | /* Got an error from the channel, just go on. */ |
2256 | ||
56a55ec6 | 2257 | if (msg->msg.data[0] == IPMI_INVALID_COMMAND_ERR) { |
1da177e4 LT |
2258 | /* If the MC does not support this |
2259 | command, that is legal. We just | |
2260 | assume it has one IPMB at channel | |
2261 | zero. */ | |
2262 | intf->channels[0].medium | |
2263 | = IPMI_CHANNEL_MEDIUM_IPMB; | |
2264 | intf->channels[0].protocol | |
2265 | = IPMI_CHANNEL_PROTOCOL_IPMB; | |
2266 | rv = -ENOSYS; | |
2267 | ||
2268 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2269 | wake_up(&intf->waitq); | |
2270 | goto out; | |
2271 | } | |
2272 | goto next_channel; | |
2273 | } | |
56a55ec6 | 2274 | if (msg->msg.data_len < 4) { |
1da177e4 LT |
2275 | /* Message not big enough, just go on. */ |
2276 | goto next_channel; | |
2277 | } | |
2278 | chan = intf->curr_channel; | |
56a55ec6 CM |
2279 | intf->channels[chan].medium = msg->msg.data[2] & 0x7f; |
2280 | intf->channels[chan].protocol = msg->msg.data[3] & 0x1f; | |
1da177e4 LT |
2281 | |
2282 | next_channel: | |
2283 | intf->curr_channel++; | |
2284 | if (intf->curr_channel >= IPMI_MAX_CHANNELS) | |
2285 | wake_up(&intf->waitq); | |
2286 | else | |
2287 | rv = send_channel_info_cmd(intf, intf->curr_channel); | |
2288 | ||
2289 | if (rv) { | |
2290 | /* Got an error somehow, just give up. */ | |
2291 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2292 | wake_up(&intf->waitq); | |
2293 | ||
2294 | printk(KERN_WARNING PFX | |
2295 | "Error sending channel information: %d\n", | |
2296 | rv); | |
2297 | } | |
2298 | } | |
2299 | out: | |
2300 | return; | |
2301 | } | |
2302 | ||
2303 | int ipmi_register_smi(struct ipmi_smi_handlers *handlers, | |
2304 | void *send_info, | |
50c812b2 CM |
2305 | struct ipmi_device_id *device_id, |
2306 | struct device *si_dev, | |
453823ba | 2307 | unsigned char slave_addr) |
1da177e4 LT |
2308 | { |
2309 | int i, j; | |
2310 | int rv; | |
393d2cc3 | 2311 | ipmi_smi_t intf; |
1da177e4 | 2312 | unsigned long flags; |
50c812b2 CM |
2313 | int version_major; |
2314 | int version_minor; | |
1da177e4 | 2315 | |
50c812b2 CM |
2316 | version_major = ipmi_version_major(device_id); |
2317 | version_minor = ipmi_version_minor(device_id); | |
1da177e4 LT |
2318 | |
2319 | /* Make sure the driver is actually initialized, this handles | |
2320 | problems with initialization order. */ | |
2321 | if (!initialized) { | |
2322 | rv = ipmi_init_msghandler(); | |
2323 | if (rv) | |
2324 | return rv; | |
2325 | /* The init code doesn't return an error if it was turned | |
2326 | off, but it won't initialize. Check that. */ | |
2327 | if (!initialized) | |
2328 | return -ENODEV; | |
2329 | } | |
2330 | ||
393d2cc3 CM |
2331 | intf = kmalloc(sizeof(*intf), GFP_KERNEL); |
2332 | if (!intf) | |
1da177e4 | 2333 | return -ENOMEM; |
393d2cc3 | 2334 | memset(intf, 0, sizeof(*intf)); |
50c812b2 CM |
2335 | intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL); |
2336 | if (!intf->bmc) { | |
2337 | kfree(intf); | |
2338 | return -ENOMEM; | |
2339 | } | |
393d2cc3 CM |
2340 | intf->intf_num = -1; |
2341 | kref_init(&intf->refcount); | |
50c812b2 CM |
2342 | intf->bmc->id = *device_id; |
2343 | intf->si_dev = si_dev; | |
393d2cc3 CM |
2344 | for (j = 0; j < IPMI_MAX_CHANNELS; j++) { |
2345 | intf->channels[j].address = IPMI_BMC_SLAVE_ADDR; | |
2346 | intf->channels[j].lun = 2; | |
2347 | } | |
2348 | if (slave_addr != 0) | |
2349 | intf->channels[0].address = slave_addr; | |
2350 | INIT_LIST_HEAD(&intf->users); | |
2351 | intf->handlers = handlers; | |
2352 | intf->send_info = send_info; | |
2353 | spin_lock_init(&intf->seq_lock); | |
2354 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) { | |
2355 | intf->seq_table[j].inuse = 0; | |
2356 | intf->seq_table[j].seqid = 0; | |
2357 | } | |
2358 | intf->curr_seq = 0; | |
2359 | #ifdef CONFIG_PROC_FS | |
2360 | spin_lock_init(&intf->proc_entry_lock); | |
2361 | #endif | |
2362 | spin_lock_init(&intf->waiting_msgs_lock); | |
2363 | INIT_LIST_HEAD(&intf->waiting_msgs); | |
2364 | spin_lock_init(&intf->events_lock); | |
2365 | INIT_LIST_HEAD(&intf->waiting_events); | |
2366 | intf->waiting_events_count = 0; | |
d6dfd131 | 2367 | mutex_init(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
2368 | INIT_LIST_HEAD(&intf->cmd_rcvrs); |
2369 | init_waitqueue_head(&intf->waitq); | |
2370 | ||
2371 | spin_lock_init(&intf->counter_lock); | |
2372 | intf->proc_dir = NULL; | |
1da177e4 LT |
2373 | |
2374 | rv = -ENOMEM; | |
393d2cc3 | 2375 | spin_lock_irqsave(&interfaces_lock, flags); |
e8b33617 | 2376 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
1da177e4 | 2377 | if (ipmi_interfaces[i] == NULL) { |
393d2cc3 CM |
2378 | intf->intf_num = i; |
2379 | /* Reserve the entry till we are done. */ | |
2380 | ipmi_interfaces[i] = IPMI_INVALID_INTERFACE_ENTRY; | |
1da177e4 | 2381 | rv = 0; |
1da177e4 LT |
2382 | break; |
2383 | } | |
2384 | } | |
393d2cc3 CM |
2385 | spin_unlock_irqrestore(&interfaces_lock, flags); |
2386 | if (rv) | |
2387 | goto out; | |
1da177e4 | 2388 | |
453823ba CM |
2389 | rv = handlers->start_processing(send_info, intf); |
2390 | if (rv) | |
2391 | goto out; | |
1da177e4 | 2392 | |
50c812b2 CM |
2393 | get_guid(intf); |
2394 | ||
393d2cc3 CM |
2395 | if ((version_major > 1) |
2396 | || ((version_major == 1) && (version_minor >= 5))) | |
2397 | { | |
2398 | /* Start scanning the channels to see what is | |
2399 | available. */ | |
2400 | intf->null_user_handler = channel_handler; | |
2401 | intf->curr_channel = 0; | |
2402 | rv = send_channel_info_cmd(intf, 0); | |
2403 | if (rv) | |
2404 | goto out; | |
1da177e4 | 2405 | |
393d2cc3 CM |
2406 | /* Wait for the channel info to be read. */ |
2407 | wait_event(intf->waitq, | |
2408 | intf->curr_channel >= IPMI_MAX_CHANNELS); | |
50c812b2 | 2409 | intf->null_user_handler = NULL; |
393d2cc3 CM |
2410 | } else { |
2411 | /* Assume a single IPMB channel at zero. */ | |
2412 | intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; | |
2413 | intf->channels[0].protocol = IPMI_CHANNEL_PROTOCOL_IPMB; | |
1da177e4 LT |
2414 | } |
2415 | ||
393d2cc3 CM |
2416 | if (rv == 0) |
2417 | rv = add_proc_entries(intf, i); | |
1da177e4 | 2418 | |
50c812b2 CM |
2419 | rv = ipmi_bmc_register(intf); |
2420 | ||
393d2cc3 | 2421 | out: |
1da177e4 | 2422 | if (rv) { |
393d2cc3 CM |
2423 | if (intf->proc_dir) |
2424 | remove_proc_entries(intf); | |
2425 | kref_put(&intf->refcount, intf_free); | |
2426 | if (i < MAX_IPMI_INTERFACES) { | |
2427 | spin_lock_irqsave(&interfaces_lock, flags); | |
2428 | ipmi_interfaces[i] = NULL; | |
2429 | spin_unlock_irqrestore(&interfaces_lock, flags); | |
2430 | } | |
2431 | } else { | |
2432 | spin_lock_irqsave(&interfaces_lock, flags); | |
2433 | ipmi_interfaces[i] = intf; | |
2434 | spin_unlock_irqrestore(&interfaces_lock, flags); | |
50c812b2 | 2435 | call_smi_watchers(i, intf->si_dev); |
1da177e4 LT |
2436 | } |
2437 | ||
2438 | return rv; | |
2439 | } | |
2440 | ||
1da177e4 LT |
2441 | int ipmi_unregister_smi(ipmi_smi_t intf) |
2442 | { | |
1da177e4 LT |
2443 | int i; |
2444 | struct ipmi_smi_watcher *w; | |
2445 | unsigned long flags; | |
2446 | ||
50c812b2 CM |
2447 | ipmi_bmc_unregister(intf); |
2448 | ||
393d2cc3 CM |
2449 | spin_lock_irqsave(&interfaces_lock, flags); |
2450 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { | |
2451 | if (ipmi_interfaces[i] == intf) { | |
2452 | /* Set the interface number reserved until we | |
2453 | * are done. */ | |
2454 | ipmi_interfaces[i] = IPMI_INVALID_INTERFACE_ENTRY; | |
2455 | intf->intf_num = -1; | |
2456 | break; | |
1da177e4 | 2457 | } |
1da177e4 | 2458 | } |
393d2cc3 | 2459 | spin_unlock_irqrestore(&interfaces_lock,flags); |
1da177e4 | 2460 | |
393d2cc3 CM |
2461 | if (i == MAX_IPMI_INTERFACES) |
2462 | return -ENODEV; | |
1da177e4 | 2463 | |
393d2cc3 | 2464 | remove_proc_entries(intf); |
1da177e4 LT |
2465 | |
2466 | /* Call all the watcher interfaces to tell them that | |
2467 | an interface is gone. */ | |
2468 | down_read(&smi_watchers_sem); | |
393d2cc3 | 2469 | list_for_each_entry(w, &smi_watchers, link) |
1da177e4 | 2470 | w->smi_gone(i); |
1da177e4 | 2471 | up_read(&smi_watchers_sem); |
393d2cc3 CM |
2472 | |
2473 | /* Allow the entry to be reused now. */ | |
2474 | spin_lock_irqsave(&interfaces_lock, flags); | |
2475 | ipmi_interfaces[i] = NULL; | |
2476 | spin_unlock_irqrestore(&interfaces_lock,flags); | |
2477 | ||
2478 | kref_put(&intf->refcount, intf_free); | |
1da177e4 LT |
2479 | return 0; |
2480 | } | |
2481 | ||
2482 | static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf, | |
2483 | struct ipmi_smi_msg *msg) | |
2484 | { | |
2485 | struct ipmi_ipmb_addr ipmb_addr; | |
2486 | struct ipmi_recv_msg *recv_msg; | |
2487 | unsigned long flags; | |
2488 | ||
2489 | ||
2490 | /* This is 11, not 10, because the response must contain a | |
2491 | * completion code. */ | |
2492 | if (msg->rsp_size < 11) { | |
2493 | /* Message not big enough, just ignore it. */ | |
2494 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2495 | intf->invalid_ipmb_responses++; | |
2496 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2497 | return 0; | |
2498 | } | |
2499 | ||
2500 | if (msg->rsp[2] != 0) { | |
2501 | /* An error getting the response, just ignore it. */ | |
2502 | return 0; | |
2503 | } | |
2504 | ||
2505 | ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; | |
2506 | ipmb_addr.slave_addr = msg->rsp[6]; | |
2507 | ipmb_addr.channel = msg->rsp[3] & 0x0f; | |
2508 | ipmb_addr.lun = msg->rsp[7] & 3; | |
2509 | ||
2510 | /* It's a response from a remote entity. Look up the sequence | |
2511 | number and handle the response. */ | |
2512 | if (intf_find_seq(intf, | |
2513 | msg->rsp[7] >> 2, | |
2514 | msg->rsp[3] & 0x0f, | |
2515 | msg->rsp[8], | |
2516 | (msg->rsp[4] >> 2) & (~1), | |
2517 | (struct ipmi_addr *) &(ipmb_addr), | |
2518 | &recv_msg)) | |
2519 | { | |
2520 | /* We were unable to find the sequence number, | |
2521 | so just nuke the message. */ | |
2522 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2523 | intf->unhandled_ipmb_responses++; | |
2524 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2525 | return 0; | |
2526 | } | |
2527 | ||
2528 | memcpy(recv_msg->msg_data, | |
2529 | &(msg->rsp[9]), | |
2530 | msg->rsp_size - 9); | |
2531 | /* THe other fields matched, so no need to set them, except | |
2532 | for netfn, which needs to be the response that was | |
2533 | returned, not the request value. */ | |
2534 | recv_msg->msg.netfn = msg->rsp[4] >> 2; | |
2535 | recv_msg->msg.data = recv_msg->msg_data; | |
2536 | recv_msg->msg.data_len = msg->rsp_size - 10; | |
2537 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
2538 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2539 | intf->handled_ipmb_responses++; | |
2540 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2541 | deliver_response(recv_msg); | |
2542 | ||
2543 | return 0; | |
2544 | } | |
2545 | ||
2546 | static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, | |
2547 | struct ipmi_smi_msg *msg) | |
2548 | { | |
393d2cc3 CM |
2549 | struct cmd_rcvr *rcvr; |
2550 | int rv = 0; | |
2551 | unsigned char netfn; | |
2552 | unsigned char cmd; | |
2553 | ipmi_user_t user = NULL; | |
2554 | struct ipmi_ipmb_addr *ipmb_addr; | |
2555 | struct ipmi_recv_msg *recv_msg; | |
2556 | unsigned long flags; | |
1da177e4 LT |
2557 | |
2558 | if (msg->rsp_size < 10) { | |
2559 | /* Message not big enough, just ignore it. */ | |
2560 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2561 | intf->invalid_commands++; | |
2562 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2563 | return 0; | |
2564 | } | |
2565 | ||
2566 | if (msg->rsp[2] != 0) { | |
2567 | /* An error getting the response, just ignore it. */ | |
2568 | return 0; | |
2569 | } | |
2570 | ||
2571 | netfn = msg->rsp[4] >> 2; | |
2572 | cmd = msg->rsp[8]; | |
2573 | ||
e61fb5b6 | 2574 | rcu_read_lock(); |
393d2cc3 CM |
2575 | rcvr = find_cmd_rcvr(intf, netfn, cmd); |
2576 | if (rcvr) { | |
2577 | user = rcvr->user; | |
2578 | kref_get(&user->refcount); | |
2579 | } else | |
2580 | user = NULL; | |
e61fb5b6 | 2581 | rcu_read_unlock(); |
1da177e4 LT |
2582 | |
2583 | if (user == NULL) { | |
2584 | /* We didn't find a user, deliver an error response. */ | |
2585 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2586 | intf->unhandled_commands++; | |
2587 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2588 | ||
2589 | msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
2590 | msg->data[1] = IPMI_SEND_MSG_CMD; | |
2591 | msg->data[2] = msg->rsp[3]; | |
2592 | msg->data[3] = msg->rsp[6]; | |
2593 | msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); | |
2594 | msg->data[5] = ipmb_checksum(&(msg->data[3]), 2); | |
c14979b9 | 2595 | msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address; |
1da177e4 LT |
2596 | /* rqseq/lun */ |
2597 | msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); | |
2598 | msg->data[8] = msg->rsp[8]; /* cmd */ | |
2599 | msg->data[9] = IPMI_INVALID_CMD_COMPLETION_CODE; | |
2600 | msg->data[10] = ipmb_checksum(&(msg->data[6]), 4); | |
2601 | msg->data_size = 11; | |
2602 | ||
2603 | #ifdef DEBUG_MSGING | |
2604 | { | |
2605 | int m; | |
2606 | printk("Invalid command:"); | |
e8b33617 | 2607 | for (m = 0; m < msg->data_size; m++) |
1da177e4 LT |
2608 | printk(" %2.2x", msg->data[m]); |
2609 | printk("\n"); | |
2610 | } | |
2611 | #endif | |
2612 | intf->handlers->sender(intf->send_info, msg, 0); | |
2613 | ||
2614 | rv = -1; /* We used the message, so return the value that | |
2615 | causes it to not be freed or queued. */ | |
2616 | } else { | |
2617 | /* Deliver the message to the user. */ | |
2618 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2619 | intf->handled_commands++; | |
2620 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2621 | ||
2622 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 2623 | if (!recv_msg) { |
1da177e4 LT |
2624 | /* We couldn't allocate memory for the |
2625 | message, so requeue it for handling | |
2626 | later. */ | |
2627 | rv = 1; | |
393d2cc3 | 2628 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
2629 | } else { |
2630 | /* Extract the source address from the data. */ | |
2631 | ipmb_addr = (struct ipmi_ipmb_addr *) &recv_msg->addr; | |
2632 | ipmb_addr->addr_type = IPMI_IPMB_ADDR_TYPE; | |
2633 | ipmb_addr->slave_addr = msg->rsp[6]; | |
2634 | ipmb_addr->lun = msg->rsp[7] & 3; | |
2635 | ipmb_addr->channel = msg->rsp[3] & 0xf; | |
2636 | ||
2637 | /* Extract the rest of the message information | |
2638 | from the IPMB header.*/ | |
2639 | recv_msg->user = user; | |
2640 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
2641 | recv_msg->msgid = msg->rsp[7] >> 2; | |
2642 | recv_msg->msg.netfn = msg->rsp[4] >> 2; | |
2643 | recv_msg->msg.cmd = msg->rsp[8]; | |
2644 | recv_msg->msg.data = recv_msg->msg_data; | |
2645 | ||
2646 | /* We chop off 10, not 9 bytes because the checksum | |
2647 | at the end also needs to be removed. */ | |
2648 | recv_msg->msg.data_len = msg->rsp_size - 10; | |
2649 | memcpy(recv_msg->msg_data, | |
2650 | &(msg->rsp[9]), | |
2651 | msg->rsp_size - 10); | |
2652 | deliver_response(recv_msg); | |
2653 | } | |
2654 | } | |
2655 | ||
2656 | return rv; | |
2657 | } | |
2658 | ||
2659 | static int handle_lan_get_msg_rsp(ipmi_smi_t intf, | |
2660 | struct ipmi_smi_msg *msg) | |
2661 | { | |
2662 | struct ipmi_lan_addr lan_addr; | |
2663 | struct ipmi_recv_msg *recv_msg; | |
2664 | unsigned long flags; | |
2665 | ||
2666 | ||
2667 | /* This is 13, not 12, because the response must contain a | |
2668 | * completion code. */ | |
2669 | if (msg->rsp_size < 13) { | |
2670 | /* Message not big enough, just ignore it. */ | |
2671 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2672 | intf->invalid_lan_responses++; | |
2673 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2674 | return 0; | |
2675 | } | |
2676 | ||
2677 | if (msg->rsp[2] != 0) { | |
2678 | /* An error getting the response, just ignore it. */ | |
2679 | return 0; | |
2680 | } | |
2681 | ||
2682 | lan_addr.addr_type = IPMI_LAN_ADDR_TYPE; | |
2683 | lan_addr.session_handle = msg->rsp[4]; | |
2684 | lan_addr.remote_SWID = msg->rsp[8]; | |
2685 | lan_addr.local_SWID = msg->rsp[5]; | |
2686 | lan_addr.channel = msg->rsp[3] & 0x0f; | |
2687 | lan_addr.privilege = msg->rsp[3] >> 4; | |
2688 | lan_addr.lun = msg->rsp[9] & 3; | |
2689 | ||
2690 | /* It's a response from a remote entity. Look up the sequence | |
2691 | number and handle the response. */ | |
2692 | if (intf_find_seq(intf, | |
2693 | msg->rsp[9] >> 2, | |
2694 | msg->rsp[3] & 0x0f, | |
2695 | msg->rsp[10], | |
2696 | (msg->rsp[6] >> 2) & (~1), | |
2697 | (struct ipmi_addr *) &(lan_addr), | |
2698 | &recv_msg)) | |
2699 | { | |
2700 | /* We were unable to find the sequence number, | |
2701 | so just nuke the message. */ | |
2702 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2703 | intf->unhandled_lan_responses++; | |
2704 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2705 | return 0; | |
2706 | } | |
2707 | ||
2708 | memcpy(recv_msg->msg_data, | |
2709 | &(msg->rsp[11]), | |
2710 | msg->rsp_size - 11); | |
2711 | /* The other fields matched, so no need to set them, except | |
2712 | for netfn, which needs to be the response that was | |
2713 | returned, not the request value. */ | |
2714 | recv_msg->msg.netfn = msg->rsp[6] >> 2; | |
2715 | recv_msg->msg.data = recv_msg->msg_data; | |
2716 | recv_msg->msg.data_len = msg->rsp_size - 12; | |
2717 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
2718 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2719 | intf->handled_lan_responses++; | |
2720 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2721 | deliver_response(recv_msg); | |
2722 | ||
2723 | return 0; | |
2724 | } | |
2725 | ||
2726 | static int handle_lan_get_msg_cmd(ipmi_smi_t intf, | |
2727 | struct ipmi_smi_msg *msg) | |
2728 | { | |
393d2cc3 CM |
2729 | struct cmd_rcvr *rcvr; |
2730 | int rv = 0; | |
2731 | unsigned char netfn; | |
2732 | unsigned char cmd; | |
2733 | ipmi_user_t user = NULL; | |
2734 | struct ipmi_lan_addr *lan_addr; | |
2735 | struct ipmi_recv_msg *recv_msg; | |
2736 | unsigned long flags; | |
1da177e4 LT |
2737 | |
2738 | if (msg->rsp_size < 12) { | |
2739 | /* Message not big enough, just ignore it. */ | |
2740 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2741 | intf->invalid_commands++; | |
2742 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2743 | return 0; | |
2744 | } | |
2745 | ||
2746 | if (msg->rsp[2] != 0) { | |
2747 | /* An error getting the response, just ignore it. */ | |
2748 | return 0; | |
2749 | } | |
2750 | ||
2751 | netfn = msg->rsp[6] >> 2; | |
2752 | cmd = msg->rsp[10]; | |
2753 | ||
e61fb5b6 | 2754 | rcu_read_lock(); |
393d2cc3 CM |
2755 | rcvr = find_cmd_rcvr(intf, netfn, cmd); |
2756 | if (rcvr) { | |
2757 | user = rcvr->user; | |
2758 | kref_get(&user->refcount); | |
2759 | } else | |
2760 | user = NULL; | |
e61fb5b6 | 2761 | rcu_read_unlock(); |
1da177e4 LT |
2762 | |
2763 | if (user == NULL) { | |
393d2cc3 | 2764 | /* We didn't find a user, just give up. */ |
1da177e4 LT |
2765 | spin_lock_irqsave(&intf->counter_lock, flags); |
2766 | intf->unhandled_commands++; | |
2767 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2768 | ||
2769 | rv = 0; /* Don't do anything with these messages, just | |
2770 | allow them to be freed. */ | |
2771 | } else { | |
2772 | /* Deliver the message to the user. */ | |
2773 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2774 | intf->handled_commands++; | |
2775 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2776 | ||
2777 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 2778 | if (!recv_msg) { |
1da177e4 LT |
2779 | /* We couldn't allocate memory for the |
2780 | message, so requeue it for handling | |
2781 | later. */ | |
2782 | rv = 1; | |
393d2cc3 | 2783 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
2784 | } else { |
2785 | /* Extract the source address from the data. */ | |
2786 | lan_addr = (struct ipmi_lan_addr *) &recv_msg->addr; | |
2787 | lan_addr->addr_type = IPMI_LAN_ADDR_TYPE; | |
2788 | lan_addr->session_handle = msg->rsp[4]; | |
2789 | lan_addr->remote_SWID = msg->rsp[8]; | |
2790 | lan_addr->local_SWID = msg->rsp[5]; | |
2791 | lan_addr->lun = msg->rsp[9] & 3; | |
2792 | lan_addr->channel = msg->rsp[3] & 0xf; | |
2793 | lan_addr->privilege = msg->rsp[3] >> 4; | |
2794 | ||
2795 | /* Extract the rest of the message information | |
2796 | from the IPMB header.*/ | |
2797 | recv_msg->user = user; | |
2798 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
2799 | recv_msg->msgid = msg->rsp[9] >> 2; | |
2800 | recv_msg->msg.netfn = msg->rsp[6] >> 2; | |
2801 | recv_msg->msg.cmd = msg->rsp[10]; | |
2802 | recv_msg->msg.data = recv_msg->msg_data; | |
2803 | ||
2804 | /* We chop off 12, not 11 bytes because the checksum | |
2805 | at the end also needs to be removed. */ | |
2806 | recv_msg->msg.data_len = msg->rsp_size - 12; | |
2807 | memcpy(recv_msg->msg_data, | |
2808 | &(msg->rsp[11]), | |
2809 | msg->rsp_size - 12); | |
2810 | deliver_response(recv_msg); | |
2811 | } | |
2812 | } | |
2813 | ||
2814 | return rv; | |
2815 | } | |
2816 | ||
2817 | static void copy_event_into_recv_msg(struct ipmi_recv_msg *recv_msg, | |
2818 | struct ipmi_smi_msg *msg) | |
2819 | { | |
2820 | struct ipmi_system_interface_addr *smi_addr; | |
2821 | ||
2822 | recv_msg->msgid = 0; | |
2823 | smi_addr = (struct ipmi_system_interface_addr *) &(recv_msg->addr); | |
2824 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2825 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
2826 | smi_addr->lun = msg->rsp[0] & 3; | |
2827 | recv_msg->recv_type = IPMI_ASYNC_EVENT_RECV_TYPE; | |
2828 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
2829 | recv_msg->msg.cmd = msg->rsp[1]; | |
2830 | memcpy(recv_msg->msg_data, &(msg->rsp[3]), msg->rsp_size - 3); | |
2831 | recv_msg->msg.data = recv_msg->msg_data; | |
2832 | recv_msg->msg.data_len = msg->rsp_size - 3; | |
2833 | } | |
2834 | ||
1da177e4 LT |
2835 | static int handle_read_event_rsp(ipmi_smi_t intf, |
2836 | struct ipmi_smi_msg *msg) | |
2837 | { | |
2838 | struct ipmi_recv_msg *recv_msg, *recv_msg2; | |
2839 | struct list_head msgs; | |
2840 | ipmi_user_t user; | |
2841 | int rv = 0; | |
2842 | int deliver_count = 0; | |
2843 | unsigned long flags; | |
2844 | ||
2845 | if (msg->rsp_size < 19) { | |
2846 | /* Message is too small to be an IPMB event. */ | |
2847 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2848 | intf->invalid_events++; | |
2849 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2850 | return 0; | |
2851 | } | |
2852 | ||
2853 | if (msg->rsp[2] != 0) { | |
2854 | /* An error getting the event, just ignore it. */ | |
2855 | return 0; | |
2856 | } | |
2857 | ||
2858 | INIT_LIST_HEAD(&msgs); | |
2859 | ||
393d2cc3 | 2860 | spin_lock_irqsave(&intf->events_lock, flags); |
1da177e4 LT |
2861 | |
2862 | spin_lock(&intf->counter_lock); | |
2863 | intf->events++; | |
2864 | spin_unlock(&intf->counter_lock); | |
2865 | ||
2866 | /* Allocate and fill in one message for every user that is getting | |
2867 | events. */ | |
393d2cc3 CM |
2868 | rcu_read_lock(); |
2869 | list_for_each_entry_rcu(user, &intf->users, link) { | |
8a3628d5 | 2870 | if (!user->gets_events) |
1da177e4 LT |
2871 | continue; |
2872 | ||
2873 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 2874 | if (!recv_msg) { |
393d2cc3 | 2875 | rcu_read_unlock(); |
8a3628d5 CM |
2876 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, |
2877 | link) { | |
1da177e4 LT |
2878 | list_del(&recv_msg->link); |
2879 | ipmi_free_recv_msg(recv_msg); | |
2880 | } | |
2881 | /* We couldn't allocate memory for the | |
2882 | message, so requeue it for handling | |
2883 | later. */ | |
2884 | rv = 1; | |
2885 | goto out; | |
2886 | } | |
2887 | ||
2888 | deliver_count++; | |
2889 | ||
2890 | copy_event_into_recv_msg(recv_msg, msg); | |
2891 | recv_msg->user = user; | |
393d2cc3 | 2892 | kref_get(&user->refcount); |
1da177e4 LT |
2893 | list_add_tail(&(recv_msg->link), &msgs); |
2894 | } | |
393d2cc3 | 2895 | rcu_read_unlock(); |
1da177e4 LT |
2896 | |
2897 | if (deliver_count) { | |
2898 | /* Now deliver all the messages. */ | |
2899 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, link) { | |
2900 | list_del(&recv_msg->link); | |
2901 | deliver_response(recv_msg); | |
2902 | } | |
2903 | } else if (intf->waiting_events_count < MAX_EVENTS_IN_QUEUE) { | |
2904 | /* No one to receive the message, put it in queue if there's | |
2905 | not already too many things in the queue. */ | |
2906 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 2907 | if (!recv_msg) { |
1da177e4 LT |
2908 | /* We couldn't allocate memory for the |
2909 | message, so requeue it for handling | |
2910 | later. */ | |
2911 | rv = 1; | |
2912 | goto out; | |
2913 | } | |
2914 | ||
2915 | copy_event_into_recv_msg(recv_msg, msg); | |
2916 | list_add_tail(&(recv_msg->link), &(intf->waiting_events)); | |
4791c03d | 2917 | intf->waiting_events_count++; |
1da177e4 LT |
2918 | } else { |
2919 | /* There's too many things in the queue, discard this | |
2920 | message. */ | |
2921 | printk(KERN_WARNING PFX "Event queue full, discarding an" | |
2922 | " incoming event\n"); | |
2923 | } | |
2924 | ||
2925 | out: | |
2926 | spin_unlock_irqrestore(&(intf->events_lock), flags); | |
2927 | ||
2928 | return rv; | |
2929 | } | |
2930 | ||
2931 | static int handle_bmc_rsp(ipmi_smi_t intf, | |
2932 | struct ipmi_smi_msg *msg) | |
2933 | { | |
2934 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 | 2935 | unsigned long flags; |
393d2cc3 | 2936 | struct ipmi_user *user; |
1da177e4 LT |
2937 | |
2938 | recv_msg = (struct ipmi_recv_msg *) msg->user_data; | |
56a55ec6 CM |
2939 | if (recv_msg == NULL) |
2940 | { | |
2941 | printk(KERN_WARNING"IPMI message received with no owner. This\n" | |
2942 | "could be because of a malformed message, or\n" | |
2943 | "because of a hardware error. Contact your\n" | |
2944 | "hardware vender for assistance\n"); | |
2945 | return 0; | |
2946 | } | |
1da177e4 | 2947 | |
393d2cc3 | 2948 | user = recv_msg->user; |
1da177e4 | 2949 | /* Make sure the user still exists. */ |
393d2cc3 | 2950 | if (user && !user->valid) { |
56a55ec6 CM |
2951 | /* The user for the message went away, so give up. */ |
2952 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2953 | intf->unhandled_local_responses++; | |
2954 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
1da177e4 LT |
2955 | ipmi_free_recv_msg(recv_msg); |
2956 | } else { | |
2957 | struct ipmi_system_interface_addr *smi_addr; | |
2958 | ||
2959 | spin_lock_irqsave(&intf->counter_lock, flags); | |
2960 | intf->handled_local_responses++; | |
2961 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
2962 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
2963 | recv_msg->msgid = msg->msgid; | |
2964 | smi_addr = ((struct ipmi_system_interface_addr *) | |
2965 | &(recv_msg->addr)); | |
2966 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2967 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
2968 | smi_addr->lun = msg->rsp[0] & 3; | |
2969 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
2970 | recv_msg->msg.cmd = msg->rsp[1]; | |
2971 | memcpy(recv_msg->msg_data, | |
2972 | &(msg->rsp[2]), | |
2973 | msg->rsp_size - 2); | |
2974 | recv_msg->msg.data = recv_msg->msg_data; | |
2975 | recv_msg->msg.data_len = msg->rsp_size - 2; | |
2976 | deliver_response(recv_msg); | |
2977 | } | |
2978 | ||
2979 | return 0; | |
2980 | } | |
2981 | ||
2982 | /* Handle a new message. Return 1 if the message should be requeued, | |
2983 | 0 if the message should be freed, or -1 if the message should not | |
2984 | be freed or requeued. */ | |
2985 | static int handle_new_recv_msg(ipmi_smi_t intf, | |
2986 | struct ipmi_smi_msg *msg) | |
2987 | { | |
2988 | int requeue; | |
2989 | int chan; | |
2990 | ||
2991 | #ifdef DEBUG_MSGING | |
2992 | int m; | |
2993 | printk("Recv:"); | |
e8b33617 | 2994 | for (m = 0; m < msg->rsp_size; m++) |
1da177e4 LT |
2995 | printk(" %2.2x", msg->rsp[m]); |
2996 | printk("\n"); | |
2997 | #endif | |
2998 | if (msg->rsp_size < 2) { | |
2999 | /* Message is too small to be correct. */ | |
3000 | printk(KERN_WARNING PFX "BMC returned to small a message" | |
3001 | " for netfn %x cmd %x, got %d bytes\n", | |
3002 | (msg->data[0] >> 2) | 1, msg->data[1], msg->rsp_size); | |
3003 | ||
3004 | /* Generate an error response for the message. */ | |
3005 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3006 | msg->rsp[1] = msg->data[1]; | |
3007 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3008 | msg->rsp_size = 3; | |
3009 | } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1))/* Netfn */ | |
3010 | || (msg->rsp[1] != msg->data[1])) /* Command */ | |
3011 | { | |
3012 | /* The response is not even marginally correct. */ | |
3013 | printk(KERN_WARNING PFX "BMC returned incorrect response," | |
3014 | " expected netfn %x cmd %x, got netfn %x cmd %x\n", | |
3015 | (msg->data[0] >> 2) | 1, msg->data[1], | |
3016 | msg->rsp[0] >> 2, msg->rsp[1]); | |
3017 | ||
3018 | /* Generate an error response for the message. */ | |
3019 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3020 | msg->rsp[1] = msg->data[1]; | |
3021 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3022 | msg->rsp_size = 3; | |
3023 | } | |
3024 | ||
3025 | if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
3026 | && (msg->rsp[1] == IPMI_SEND_MSG_CMD) | |
3027 | && (msg->user_data != NULL)) | |
3028 | { | |
3029 | /* It's a response to a response we sent. For this we | |
3030 | deliver a send message response to the user. */ | |
393d2cc3 | 3031 | struct ipmi_recv_msg *recv_msg = msg->user_data; |
1da177e4 LT |
3032 | |
3033 | requeue = 0; | |
3034 | if (msg->rsp_size < 2) | |
3035 | /* Message is too small to be correct. */ | |
3036 | goto out; | |
3037 | ||
3038 | chan = msg->data[2] & 0x0f; | |
3039 | if (chan >= IPMI_MAX_CHANNELS) | |
3040 | /* Invalid channel number */ | |
3041 | goto out; | |
3042 | ||
393d2cc3 CM |
3043 | if (!recv_msg) |
3044 | goto out; | |
3045 | ||
3046 | /* Make sure the user still exists. */ | |
3047 | if (!recv_msg->user || !recv_msg->user->valid) | |
3048 | goto out; | |
3049 | ||
3050 | recv_msg->recv_type = IPMI_RESPONSE_RESPONSE_TYPE; | |
3051 | recv_msg->msg.data = recv_msg->msg_data; | |
3052 | recv_msg->msg.data_len = 1; | |
3053 | recv_msg->msg_data[0] = msg->rsp[2]; | |
3054 | deliver_response(recv_msg); | |
1da177e4 LT |
3055 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
3056 | && (msg->rsp[1] == IPMI_GET_MSG_CMD)) | |
3057 | { | |
3058 | /* It's from the receive queue. */ | |
3059 | chan = msg->rsp[3] & 0xf; | |
3060 | if (chan >= IPMI_MAX_CHANNELS) { | |
3061 | /* Invalid channel number */ | |
3062 | requeue = 0; | |
3063 | goto out; | |
3064 | } | |
3065 | ||
3066 | switch (intf->channels[chan].medium) { | |
3067 | case IPMI_CHANNEL_MEDIUM_IPMB: | |
3068 | if (msg->rsp[4] & 0x04) { | |
3069 | /* It's a response, so find the | |
3070 | requesting message and send it up. */ | |
3071 | requeue = handle_ipmb_get_msg_rsp(intf, msg); | |
3072 | } else { | |
3073 | /* It's a command to the SMS from some other | |
3074 | entity. Handle that. */ | |
3075 | requeue = handle_ipmb_get_msg_cmd(intf, msg); | |
3076 | } | |
3077 | break; | |
3078 | ||
3079 | case IPMI_CHANNEL_MEDIUM_8023LAN: | |
3080 | case IPMI_CHANNEL_MEDIUM_ASYNC: | |
3081 | if (msg->rsp[6] & 0x04) { | |
3082 | /* It's a response, so find the | |
3083 | requesting message and send it up. */ | |
3084 | requeue = handle_lan_get_msg_rsp(intf, msg); | |
3085 | } else { | |
3086 | /* It's a command to the SMS from some other | |
3087 | entity. Handle that. */ | |
3088 | requeue = handle_lan_get_msg_cmd(intf, msg); | |
3089 | } | |
3090 | break; | |
3091 | ||
3092 | default: | |
3093 | /* We don't handle the channel type, so just | |
3094 | * free the message. */ | |
3095 | requeue = 0; | |
3096 | } | |
3097 | ||
3098 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
3099 | && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD)) | |
3100 | { | |
3101 | /* It's an asyncronous event. */ | |
3102 | requeue = handle_read_event_rsp(intf, msg); | |
3103 | } else { | |
3104 | /* It's a response from the local BMC. */ | |
3105 | requeue = handle_bmc_rsp(intf, msg); | |
3106 | } | |
3107 | ||
3108 | out: | |
3109 | return requeue; | |
3110 | } | |
3111 | ||
3112 | /* Handle a new message from the lower layer. */ | |
3113 | void ipmi_smi_msg_received(ipmi_smi_t intf, | |
3114 | struct ipmi_smi_msg *msg) | |
3115 | { | |
3116 | unsigned long flags; | |
3117 | int rv; | |
3118 | ||
3119 | ||
1da177e4 LT |
3120 | if ((msg->data_size >= 2) |
3121 | && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) | |
3122 | && (msg->data[1] == IPMI_SEND_MSG_CMD) | |
393d2cc3 CM |
3123 | && (msg->user_data == NULL)) |
3124 | { | |
1da177e4 LT |
3125 | /* This is the local response to a command send, start |
3126 | the timer for these. The user_data will not be | |
3127 | NULL if this is a response send, and we will let | |
3128 | response sends just go through. */ | |
3129 | ||
3130 | /* Check for errors, if we get certain errors (ones | |
3131 | that mean basically we can try again later), we | |
3132 | ignore them and start the timer. Otherwise we | |
3133 | report the error immediately. */ | |
3134 | if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) | |
3135 | && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) | |
3136 | && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR)) | |
3137 | { | |
3138 | int chan = msg->rsp[3] & 0xf; | |
3139 | ||
3140 | /* Got an error sending the message, handle it. */ | |
3141 | spin_lock_irqsave(&intf->counter_lock, flags); | |
3142 | if (chan >= IPMI_MAX_CHANNELS) | |
3143 | ; /* This shouldn't happen */ | |
3144 | else if ((intf->channels[chan].medium | |
3145 | == IPMI_CHANNEL_MEDIUM_8023LAN) | |
3146 | || (intf->channels[chan].medium | |
3147 | == IPMI_CHANNEL_MEDIUM_ASYNC)) | |
3148 | intf->sent_lan_command_errs++; | |
3149 | else | |
3150 | intf->sent_ipmb_command_errs++; | |
3151 | spin_unlock_irqrestore(&intf->counter_lock, flags); | |
3152 | intf_err_seq(intf, msg->msgid, msg->rsp[2]); | |
3153 | } else { | |
3154 | /* The message was sent, start the timer. */ | |
3155 | intf_start_seq_timer(intf, msg->msgid); | |
3156 | } | |
3157 | ||
3158 | ipmi_free_smi_msg(msg); | |
393d2cc3 | 3159 | goto out; |
1da177e4 LT |
3160 | } |
3161 | ||
3162 | /* To preserve message order, if the list is not empty, we | |
3163 | tack this message onto the end of the list. */ | |
393d2cc3 CM |
3164 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
3165 | if (!list_empty(&intf->waiting_msgs)) { | |
3166 | list_add_tail(&msg->link, &intf->waiting_msgs); | |
177294d1 | 3167 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
393d2cc3 | 3168 | goto out; |
1da177e4 | 3169 | } |
393d2cc3 | 3170 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
1da177e4 LT |
3171 | |
3172 | rv = handle_new_recv_msg(intf, msg); | |
3173 | if (rv > 0) { | |
3174 | /* Could not handle the message now, just add it to a | |
3175 | list to handle later. */ | |
177294d1 | 3176 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
393d2cc3 | 3177 | list_add_tail(&msg->link, &intf->waiting_msgs); |
177294d1 | 3178 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
1da177e4 LT |
3179 | } else if (rv == 0) { |
3180 | ipmi_free_smi_msg(msg); | |
3181 | } | |
3182 | ||
393d2cc3 CM |
3183 | out: |
3184 | return; | |
1da177e4 LT |
3185 | } |
3186 | ||
3187 | void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf) | |
3188 | { | |
3189 | ipmi_user_t user; | |
3190 | ||
393d2cc3 CM |
3191 | rcu_read_lock(); |
3192 | list_for_each_entry_rcu(user, &intf->users, link) { | |
8a3628d5 | 3193 | if (!user->handler->ipmi_watchdog_pretimeout) |
1da177e4 LT |
3194 | continue; |
3195 | ||
3196 | user->handler->ipmi_watchdog_pretimeout(user->handler_data); | |
3197 | } | |
393d2cc3 | 3198 | rcu_read_unlock(); |
1da177e4 LT |
3199 | } |
3200 | ||
3201 | static void | |
3202 | handle_msg_timeout(struct ipmi_recv_msg *msg) | |
3203 | { | |
3204 | msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
3205 | msg->msg_data[0] = IPMI_TIMEOUT_COMPLETION_CODE; | |
3206 | msg->msg.netfn |= 1; /* Convert to a response. */ | |
3207 | msg->msg.data_len = 1; | |
3208 | msg->msg.data = msg->msg_data; | |
3209 | deliver_response(msg); | |
3210 | } | |
3211 | ||
882fe011 CM |
3212 | static struct ipmi_smi_msg * |
3213 | smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, | |
3214 | unsigned char seq, long seqid) | |
1da177e4 | 3215 | { |
882fe011 | 3216 | struct ipmi_smi_msg *smi_msg = ipmi_alloc_smi_msg(); |
1da177e4 LT |
3217 | if (!smi_msg) |
3218 | /* If we can't allocate the message, then just return, we | |
3219 | get 4 retries, so this should be ok. */ | |
882fe011 | 3220 | return NULL; |
1da177e4 LT |
3221 | |
3222 | memcpy(smi_msg->data, recv_msg->msg.data, recv_msg->msg.data_len); | |
3223 | smi_msg->data_size = recv_msg->msg.data_len; | |
3224 | smi_msg->msgid = STORE_SEQ_IN_MSGID(seq, seqid); | |
3225 | ||
1da177e4 LT |
3226 | #ifdef DEBUG_MSGING |
3227 | { | |
3228 | int m; | |
3229 | printk("Resend: "); | |
e8b33617 | 3230 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
3231 | printk(" %2.2x", smi_msg->data[m]); |
3232 | printk("\n"); | |
3233 | } | |
3234 | #endif | |
882fe011 | 3235 | return smi_msg; |
1da177e4 LT |
3236 | } |
3237 | ||
393d2cc3 CM |
3238 | static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent, |
3239 | struct list_head *timeouts, long timeout_period, | |
3240 | int slot, unsigned long *flags) | |
3241 | { | |
3242 | struct ipmi_recv_msg *msg; | |
3243 | ||
3244 | if (!ent->inuse) | |
3245 | return; | |
3246 | ||
3247 | ent->timeout -= timeout_period; | |
3248 | if (ent->timeout > 0) | |
3249 | return; | |
3250 | ||
3251 | if (ent->retries_left == 0) { | |
3252 | /* The message has used all its retries. */ | |
3253 | ent->inuse = 0; | |
3254 | msg = ent->recv_msg; | |
3255 | list_add_tail(&msg->link, timeouts); | |
3256 | spin_lock(&intf->counter_lock); | |
3257 | if (ent->broadcast) | |
3258 | intf->timed_out_ipmb_broadcasts++; | |
3259 | else if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE) | |
3260 | intf->timed_out_lan_commands++; | |
3261 | else | |
3262 | intf->timed_out_ipmb_commands++; | |
3263 | spin_unlock(&intf->counter_lock); | |
3264 | } else { | |
3265 | struct ipmi_smi_msg *smi_msg; | |
3266 | /* More retries, send again. */ | |
3267 | ||
3268 | /* Start with the max timer, set to normal | |
3269 | timer after the message is sent. */ | |
3270 | ent->timeout = MAX_MSG_TIMEOUT; | |
3271 | ent->retries_left--; | |
3272 | spin_lock(&intf->counter_lock); | |
3273 | if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE) | |
3274 | intf->retransmitted_lan_commands++; | |
3275 | else | |
3276 | intf->retransmitted_ipmb_commands++; | |
3277 | spin_unlock(&intf->counter_lock); | |
3278 | ||
3279 | smi_msg = smi_from_recv_msg(intf, ent->recv_msg, slot, | |
3280 | ent->seqid); | |
8a3628d5 | 3281 | if (!smi_msg) |
393d2cc3 CM |
3282 | return; |
3283 | ||
3284 | spin_unlock_irqrestore(&intf->seq_lock, *flags); | |
3285 | /* Send the new message. We send with a zero | |
3286 | * priority. It timed out, I doubt time is | |
3287 | * that critical now, and high priority | |
3288 | * messages are really only for messages to the | |
3289 | * local MC, which don't get resent. */ | |
3290 | intf->handlers->sender(intf->send_info, | |
3291 | smi_msg, 0); | |
3292 | spin_lock_irqsave(&intf->seq_lock, *flags); | |
3293 | } | |
3294 | } | |
3295 | ||
3296 | static void ipmi_timeout_handler(long timeout_period) | |
1da177e4 LT |
3297 | { |
3298 | ipmi_smi_t intf; | |
3299 | struct list_head timeouts; | |
3300 | struct ipmi_recv_msg *msg, *msg2; | |
3301 | struct ipmi_smi_msg *smi_msg, *smi_msg2; | |
3302 | unsigned long flags; | |
3303 | int i, j; | |
3304 | ||
3305 | INIT_LIST_HEAD(&timeouts); | |
3306 | ||
3307 | spin_lock(&interfaces_lock); | |
e8b33617 | 3308 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
1da177e4 | 3309 | intf = ipmi_interfaces[i]; |
393d2cc3 | 3310 | if (IPMI_INVALID_INTERFACE(intf)) |
1da177e4 | 3311 | continue; |
393d2cc3 CM |
3312 | kref_get(&intf->refcount); |
3313 | spin_unlock(&interfaces_lock); | |
1da177e4 LT |
3314 | |
3315 | /* See if any waiting messages need to be processed. */ | |
393d2cc3 | 3316 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
8a3628d5 CM |
3317 | list_for_each_entry_safe(smi_msg, smi_msg2, |
3318 | &intf->waiting_msgs, link) { | |
3319 | if (!handle_new_recv_msg(intf, smi_msg)) { | |
1da177e4 LT |
3320 | list_del(&smi_msg->link); |
3321 | ipmi_free_smi_msg(smi_msg); | |
3322 | } else { | |
3323 | /* To preserve message order, quit if we | |
3324 | can't handle a message. */ | |
3325 | break; | |
3326 | } | |
3327 | } | |
393d2cc3 | 3328 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
1da177e4 LT |
3329 | |
3330 | /* Go through the seq table and find any messages that | |
3331 | have timed out, putting them in the timeouts | |
3332 | list. */ | |
393d2cc3 CM |
3333 | spin_lock_irqsave(&intf->seq_lock, flags); |
3334 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) | |
3335 | check_msg_timeout(intf, &(intf->seq_table[j]), | |
3336 | &timeouts, timeout_period, j, | |
3337 | &flags); | |
3338 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
3339 | ||
3340 | list_for_each_entry_safe(msg, msg2, &timeouts, link) | |
1da177e4 | 3341 | handle_msg_timeout(msg); |
1da177e4 | 3342 | |
393d2cc3 CM |
3343 | kref_put(&intf->refcount, intf_free); |
3344 | spin_lock(&interfaces_lock); | |
1da177e4 LT |
3345 | } |
3346 | spin_unlock(&interfaces_lock); | |
3347 | } | |
3348 | ||
3349 | static void ipmi_request_event(void) | |
3350 | { | |
3351 | ipmi_smi_t intf; | |
3352 | int i; | |
3353 | ||
3354 | spin_lock(&interfaces_lock); | |
e8b33617 | 3355 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
1da177e4 | 3356 | intf = ipmi_interfaces[i]; |
393d2cc3 | 3357 | if (IPMI_INVALID_INTERFACE(intf)) |
1da177e4 LT |
3358 | continue; |
3359 | ||
3360 | intf->handlers->request_events(intf->send_info); | |
3361 | } | |
3362 | spin_unlock(&interfaces_lock); | |
3363 | } | |
3364 | ||
3365 | static struct timer_list ipmi_timer; | |
3366 | ||
3367 | /* Call every ~100 ms. */ | |
3368 | #define IPMI_TIMEOUT_TIME 100 | |
3369 | ||
3370 | /* How many jiffies does it take to get to the timeout time. */ | |
3371 | #define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000) | |
3372 | ||
3373 | /* Request events from the queue every second (this is the number of | |
3374 | IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the | |
3375 | future, IPMI will add a way to know immediately if an event is in | |
3376 | the queue and this silliness can go away. */ | |
3377 | #define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME)) | |
3378 | ||
8f43f84f | 3379 | static atomic_t stop_operation; |
1da177e4 LT |
3380 | static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
3381 | ||
3382 | static void ipmi_timeout(unsigned long data) | |
3383 | { | |
8f43f84f | 3384 | if (atomic_read(&stop_operation)) |
1da177e4 | 3385 | return; |
1da177e4 LT |
3386 | |
3387 | ticks_to_req_ev--; | |
3388 | if (ticks_to_req_ev == 0) { | |
3389 | ipmi_request_event(); | |
3390 | ticks_to_req_ev = IPMI_REQUEST_EV_TIME; | |
3391 | } | |
3392 | ||
3393 | ipmi_timeout_handler(IPMI_TIMEOUT_TIME); | |
3394 | ||
8f43f84f | 3395 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); |
1da177e4 LT |
3396 | } |
3397 | ||
3398 | ||
3399 | static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0); | |
3400 | static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0); | |
3401 | ||
3402 | /* FIXME - convert these to slabs. */ | |
3403 | static void free_smi_msg(struct ipmi_smi_msg *msg) | |
3404 | { | |
3405 | atomic_dec(&smi_msg_inuse_count); | |
3406 | kfree(msg); | |
3407 | } | |
3408 | ||
3409 | struct ipmi_smi_msg *ipmi_alloc_smi_msg(void) | |
3410 | { | |
3411 | struct ipmi_smi_msg *rv; | |
3412 | rv = kmalloc(sizeof(struct ipmi_smi_msg), GFP_ATOMIC); | |
3413 | if (rv) { | |
3414 | rv->done = free_smi_msg; | |
3415 | rv->user_data = NULL; | |
3416 | atomic_inc(&smi_msg_inuse_count); | |
3417 | } | |
3418 | return rv; | |
3419 | } | |
3420 | ||
3421 | static void free_recv_msg(struct ipmi_recv_msg *msg) | |
3422 | { | |
3423 | atomic_dec(&recv_msg_inuse_count); | |
3424 | kfree(msg); | |
3425 | } | |
3426 | ||
3427 | struct ipmi_recv_msg *ipmi_alloc_recv_msg(void) | |
3428 | { | |
3429 | struct ipmi_recv_msg *rv; | |
3430 | ||
3431 | rv = kmalloc(sizeof(struct ipmi_recv_msg), GFP_ATOMIC); | |
3432 | if (rv) { | |
3433 | rv->done = free_recv_msg; | |
3434 | atomic_inc(&recv_msg_inuse_count); | |
3435 | } | |
3436 | return rv; | |
3437 | } | |
3438 | ||
393d2cc3 CM |
3439 | void ipmi_free_recv_msg(struct ipmi_recv_msg *msg) |
3440 | { | |
3441 | if (msg->user) | |
3442 | kref_put(&msg->user->refcount, free_user); | |
3443 | msg->done(msg); | |
3444 | } | |
3445 | ||
1da177e4 LT |
3446 | #ifdef CONFIG_IPMI_PANIC_EVENT |
3447 | ||
3448 | static void dummy_smi_done_handler(struct ipmi_smi_msg *msg) | |
3449 | { | |
3450 | } | |
3451 | ||
3452 | static void dummy_recv_done_handler(struct ipmi_recv_msg *msg) | |
3453 | { | |
3454 | } | |
3455 | ||
3456 | #ifdef CONFIG_IPMI_PANIC_STRING | |
56a55ec6 | 3457 | static void event_receiver_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 3458 | { |
56a55ec6 CM |
3459 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
3460 | && (msg->msg.netfn == IPMI_NETFN_SENSOR_EVENT_RESPONSE) | |
3461 | && (msg->msg.cmd == IPMI_GET_EVENT_RECEIVER_CMD) | |
3462 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) | |
1da177e4 LT |
3463 | { |
3464 | /* A get event receiver command, save it. */ | |
56a55ec6 CM |
3465 | intf->event_receiver = msg->msg.data[1]; |
3466 | intf->event_receiver_lun = msg->msg.data[2] & 0x3; | |
1da177e4 LT |
3467 | } |
3468 | } | |
3469 | ||
56a55ec6 | 3470 | static void device_id_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 3471 | { |
56a55ec6 CM |
3472 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
3473 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
3474 | && (msg->msg.cmd == IPMI_GET_DEVICE_ID_CMD) | |
3475 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) | |
1da177e4 LT |
3476 | { |
3477 | /* A get device id command, save if we are an event | |
3478 | receiver or generator. */ | |
56a55ec6 CM |
3479 | intf->local_sel_device = (msg->msg.data[6] >> 2) & 1; |
3480 | intf->local_event_generator = (msg->msg.data[6] >> 5) & 1; | |
1da177e4 LT |
3481 | } |
3482 | } | |
3483 | #endif | |
3484 | ||
3485 | static void send_panic_events(char *str) | |
3486 | { | |
3487 | struct kernel_ipmi_msg msg; | |
3488 | ipmi_smi_t intf; | |
3489 | unsigned char data[16]; | |
3490 | int i; | |
3491 | struct ipmi_system_interface_addr *si; | |
3492 | struct ipmi_addr addr; | |
3493 | struct ipmi_smi_msg smi_msg; | |
3494 | struct ipmi_recv_msg recv_msg; | |
3495 | ||
3496 | si = (struct ipmi_system_interface_addr *) &addr; | |
3497 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3498 | si->channel = IPMI_BMC_CHANNEL; | |
3499 | si->lun = 0; | |
3500 | ||
3501 | /* Fill in an event telling that we have failed. */ | |
3502 | msg.netfn = 0x04; /* Sensor or Event. */ | |
3503 | msg.cmd = 2; /* Platform event command. */ | |
3504 | msg.data = data; | |
3505 | msg.data_len = 8; | |
cda315ab | 3506 | data[0] = 0x41; /* Kernel generator ID, IPMI table 5-4 */ |
1da177e4 LT |
3507 | data[1] = 0x03; /* This is for IPMI 1.0. */ |
3508 | data[2] = 0x20; /* OS Critical Stop, IPMI table 36-3 */ | |
3509 | data[4] = 0x6f; /* Sensor specific, IPMI table 36-1 */ | |
3510 | data[5] = 0xa1; /* Runtime stop OEM bytes 2 & 3. */ | |
3511 | ||
3512 | /* Put a few breadcrumbs in. Hopefully later we can add more things | |
3513 | to make the panic events more useful. */ | |
3514 | if (str) { | |
3515 | data[3] = str[0]; | |
3516 | data[6] = str[1]; | |
3517 | data[7] = str[2]; | |
3518 | } | |
3519 | ||
3520 | smi_msg.done = dummy_smi_done_handler; | |
3521 | recv_msg.done = dummy_recv_done_handler; | |
3522 | ||
3523 | /* For every registered interface, send the event. */ | |
e8b33617 | 3524 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
1da177e4 | 3525 | intf = ipmi_interfaces[i]; |
393d2cc3 | 3526 | if (IPMI_INVALID_INTERFACE(intf)) |
1da177e4 LT |
3527 | continue; |
3528 | ||
3529 | /* Send the event announcing the panic. */ | |
3530 | intf->handlers->set_run_to_completion(intf->send_info, 1); | |
3531 | i_ipmi_request(NULL, | |
3532 | intf, | |
3533 | &addr, | |
3534 | 0, | |
3535 | &msg, | |
56a55ec6 | 3536 | intf, |
1da177e4 LT |
3537 | &smi_msg, |
3538 | &recv_msg, | |
3539 | 0, | |
c14979b9 CM |
3540 | intf->channels[0].address, |
3541 | intf->channels[0].lun, | |
1da177e4 LT |
3542 | 0, 1); /* Don't retry, and don't wait. */ |
3543 | } | |
3544 | ||
3545 | #ifdef CONFIG_IPMI_PANIC_STRING | |
3546 | /* On every interface, dump a bunch of OEM event holding the | |
3547 | string. */ | |
3548 | if (!str) | |
3549 | return; | |
3550 | ||
e8b33617 | 3551 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
1da177e4 LT |
3552 | char *p = str; |
3553 | struct ipmi_ipmb_addr *ipmb; | |
3554 | int j; | |
3555 | ||
3556 | intf = ipmi_interfaces[i]; | |
393d2cc3 | 3557 | if (IPMI_INVALID_INTERFACE(intf)) |
1da177e4 LT |
3558 | continue; |
3559 | ||
3560 | /* First job here is to figure out where to send the | |
3561 | OEM events. There's no way in IPMI to send OEM | |
3562 | events using an event send command, so we have to | |
3563 | find the SEL to put them in and stick them in | |
3564 | there. */ | |
3565 | ||
3566 | /* Get capabilities from the get device id. */ | |
3567 | intf->local_sel_device = 0; | |
3568 | intf->local_event_generator = 0; | |
3569 | intf->event_receiver = 0; | |
3570 | ||
3571 | /* Request the device info from the local MC. */ | |
3572 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
3573 | msg.cmd = IPMI_GET_DEVICE_ID_CMD; | |
3574 | msg.data = NULL; | |
3575 | msg.data_len = 0; | |
3576 | intf->null_user_handler = device_id_fetcher; | |
3577 | i_ipmi_request(NULL, | |
3578 | intf, | |
3579 | &addr, | |
3580 | 0, | |
3581 | &msg, | |
56a55ec6 | 3582 | intf, |
1da177e4 LT |
3583 | &smi_msg, |
3584 | &recv_msg, | |
3585 | 0, | |
c14979b9 CM |
3586 | intf->channels[0].address, |
3587 | intf->channels[0].lun, | |
1da177e4 LT |
3588 | 0, 1); /* Don't retry, and don't wait. */ |
3589 | ||
3590 | if (intf->local_event_generator) { | |
3591 | /* Request the event receiver from the local MC. */ | |
3592 | msg.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; | |
3593 | msg.cmd = IPMI_GET_EVENT_RECEIVER_CMD; | |
3594 | msg.data = NULL; | |
3595 | msg.data_len = 0; | |
3596 | intf->null_user_handler = event_receiver_fetcher; | |
3597 | i_ipmi_request(NULL, | |
3598 | intf, | |
3599 | &addr, | |
3600 | 0, | |
3601 | &msg, | |
56a55ec6 | 3602 | intf, |
1da177e4 LT |
3603 | &smi_msg, |
3604 | &recv_msg, | |
3605 | 0, | |
c14979b9 CM |
3606 | intf->channels[0].address, |
3607 | intf->channels[0].lun, | |
1da177e4 LT |
3608 | 0, 1); /* no retry, and no wait. */ |
3609 | } | |
3610 | intf->null_user_handler = NULL; | |
3611 | ||
3612 | /* Validate the event receiver. The low bit must not | |
3613 | be 1 (it must be a valid IPMB address), it cannot | |
3614 | be zero, and it must not be my address. */ | |
3615 | if (((intf->event_receiver & 1) == 0) | |
3616 | && (intf->event_receiver != 0) | |
c14979b9 | 3617 | && (intf->event_receiver != intf->channels[0].address)) |
1da177e4 LT |
3618 | { |
3619 | /* The event receiver is valid, send an IPMB | |
3620 | message. */ | |
3621 | ipmb = (struct ipmi_ipmb_addr *) &addr; | |
3622 | ipmb->addr_type = IPMI_IPMB_ADDR_TYPE; | |
3623 | ipmb->channel = 0; /* FIXME - is this right? */ | |
3624 | ipmb->lun = intf->event_receiver_lun; | |
3625 | ipmb->slave_addr = intf->event_receiver; | |
3626 | } else if (intf->local_sel_device) { | |
3627 | /* The event receiver was not valid (or was | |
3628 | me), but I am an SEL device, just dump it | |
3629 | in my SEL. */ | |
3630 | si = (struct ipmi_system_interface_addr *) &addr; | |
3631 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3632 | si->channel = IPMI_BMC_CHANNEL; | |
3633 | si->lun = 0; | |
3634 | } else | |
3635 | continue; /* No where to send the event. */ | |
3636 | ||
3637 | ||
3638 | msg.netfn = IPMI_NETFN_STORAGE_REQUEST; /* Storage. */ | |
3639 | msg.cmd = IPMI_ADD_SEL_ENTRY_CMD; | |
3640 | msg.data = data; | |
3641 | msg.data_len = 16; | |
3642 | ||
3643 | j = 0; | |
3644 | while (*p) { | |
3645 | int size = strlen(p); | |
3646 | ||
3647 | if (size > 11) | |
3648 | size = 11; | |
3649 | data[0] = 0; | |
3650 | data[1] = 0; | |
3651 | data[2] = 0xf0; /* OEM event without timestamp. */ | |
c14979b9 | 3652 | data[3] = intf->channels[0].address; |
1da177e4 LT |
3653 | data[4] = j++; /* sequence # */ |
3654 | /* Always give 11 bytes, so strncpy will fill | |
3655 | it with zeroes for me. */ | |
3656 | strncpy(data+5, p, 11); | |
3657 | p += size; | |
3658 | ||
3659 | i_ipmi_request(NULL, | |
3660 | intf, | |
3661 | &addr, | |
3662 | 0, | |
3663 | &msg, | |
56a55ec6 | 3664 | intf, |
1da177e4 LT |
3665 | &smi_msg, |
3666 | &recv_msg, | |
3667 | 0, | |
c14979b9 CM |
3668 | intf->channels[0].address, |
3669 | intf->channels[0].lun, | |
1da177e4 LT |
3670 | 0, 1); /* no retry, and no wait. */ |
3671 | } | |
3672 | } | |
3673 | #endif /* CONFIG_IPMI_PANIC_STRING */ | |
3674 | } | |
3675 | #endif /* CONFIG_IPMI_PANIC_EVENT */ | |
3676 | ||
3677 | static int has_paniced = 0; | |
3678 | ||
3679 | static int panic_event(struct notifier_block *this, | |
3680 | unsigned long event, | |
3681 | void *ptr) | |
3682 | { | |
3683 | int i; | |
3684 | ipmi_smi_t intf; | |
3685 | ||
3686 | if (has_paniced) | |
3687 | return NOTIFY_DONE; | |
3688 | has_paniced = 1; | |
3689 | ||
3690 | /* For every registered interface, set it to run to completion. */ | |
e8b33617 | 3691 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
1da177e4 | 3692 | intf = ipmi_interfaces[i]; |
393d2cc3 | 3693 | if (IPMI_INVALID_INTERFACE(intf)) |
1da177e4 LT |
3694 | continue; |
3695 | ||
3696 | intf->handlers->set_run_to_completion(intf->send_info, 1); | |
3697 | } | |
3698 | ||
3699 | #ifdef CONFIG_IPMI_PANIC_EVENT | |
3700 | send_panic_events(ptr); | |
3701 | #endif | |
3702 | ||
3703 | return NOTIFY_DONE; | |
3704 | } | |
3705 | ||
3706 | static struct notifier_block panic_block = { | |
3707 | .notifier_call = panic_event, | |
3708 | .next = NULL, | |
3709 | .priority = 200 /* priority: INT_MAX >= x >= 0 */ | |
3710 | }; | |
3711 | ||
3712 | static int ipmi_init_msghandler(void) | |
3713 | { | |
3714 | int i; | |
50c812b2 | 3715 | int rv; |
1da177e4 LT |
3716 | |
3717 | if (initialized) | |
3718 | return 0; | |
3719 | ||
50c812b2 CM |
3720 | rv = driver_register(&ipmidriver); |
3721 | if (rv) { | |
3722 | printk(KERN_ERR PFX "Could not register IPMI driver\n"); | |
3723 | return rv; | |
3724 | } | |
3725 | ||
1da177e4 | 3726 | printk(KERN_INFO "ipmi message handler version " |
1fdd75bd | 3727 | IPMI_DRIVER_VERSION "\n"); |
1da177e4 | 3728 | |
393d2cc3 | 3729 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) |
1da177e4 | 3730 | ipmi_interfaces[i] = NULL; |
1da177e4 | 3731 | |
3b625943 | 3732 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
3733 | proc_ipmi_root = proc_mkdir("ipmi", NULL); |
3734 | if (!proc_ipmi_root) { | |
3735 | printk(KERN_ERR PFX "Unable to create IPMI proc dir"); | |
3736 | return -ENOMEM; | |
3737 | } | |
3738 | ||
3739 | proc_ipmi_root->owner = THIS_MODULE; | |
3b625943 | 3740 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
3741 | |
3742 | init_timer(&ipmi_timer); | |
3743 | ipmi_timer.data = 0; | |
3744 | ipmi_timer.function = ipmi_timeout; | |
3745 | ipmi_timer.expires = jiffies + IPMI_TIMEOUT_JIFFIES; | |
3746 | add_timer(&ipmi_timer); | |
3747 | ||
e041c683 | 3748 | atomic_notifier_chain_register(&panic_notifier_list, &panic_block); |
1da177e4 LT |
3749 | |
3750 | initialized = 1; | |
3751 | ||
3752 | return 0; | |
3753 | } | |
3754 | ||
3755 | static __init int ipmi_init_msghandler_mod(void) | |
3756 | { | |
3757 | ipmi_init_msghandler(); | |
3758 | return 0; | |
3759 | } | |
3760 | ||
3761 | static __exit void cleanup_ipmi(void) | |
3762 | { | |
3763 | int count; | |
3764 | ||
3765 | if (!initialized) | |
3766 | return; | |
3767 | ||
e041c683 | 3768 | atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block); |
1da177e4 LT |
3769 | |
3770 | /* This can't be called if any interfaces exist, so no worry about | |
3771 | shutting down the interfaces. */ | |
3772 | ||
3773 | /* Tell the timer to stop, then wait for it to stop. This avoids | |
3774 | problems with race conditions removing the timer here. */ | |
8f43f84f CM |
3775 | atomic_inc(&stop_operation); |
3776 | del_timer_sync(&ipmi_timer); | |
1da177e4 | 3777 | |
3b625943 | 3778 | #ifdef CONFIG_PROC_FS |
1da177e4 | 3779 | remove_proc_entry(proc_ipmi_root->name, &proc_root); |
3b625943 | 3780 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 3781 | |
50c812b2 CM |
3782 | driver_unregister(&ipmidriver); |
3783 | ||
1da177e4 LT |
3784 | initialized = 0; |
3785 | ||
3786 | /* Check for buffer leaks. */ | |
3787 | count = atomic_read(&smi_msg_inuse_count); | |
3788 | if (count != 0) | |
3789 | printk(KERN_WARNING PFX "SMI message count %d at exit\n", | |
3790 | count); | |
3791 | count = atomic_read(&recv_msg_inuse_count); | |
3792 | if (count != 0) | |
3793 | printk(KERN_WARNING PFX "recv message count %d at exit\n", | |
3794 | count); | |
3795 | } | |
3796 | module_exit(cleanup_ipmi); | |
3797 | ||
3798 | module_init(ipmi_init_msghandler_mod); | |
3799 | MODULE_LICENSE("GPL"); | |
1fdd75bd CM |
3800 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
3801 | MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI interface."); | |
3802 | MODULE_VERSION(IPMI_DRIVER_VERSION); | |
1da177e4 LT |
3803 | |
3804 | EXPORT_SYMBOL(ipmi_create_user); | |
3805 | EXPORT_SYMBOL(ipmi_destroy_user); | |
3806 | EXPORT_SYMBOL(ipmi_get_version); | |
3807 | EXPORT_SYMBOL(ipmi_request_settime); | |
3808 | EXPORT_SYMBOL(ipmi_request_supply_msgs); | |
3809 | EXPORT_SYMBOL(ipmi_register_smi); | |
3810 | EXPORT_SYMBOL(ipmi_unregister_smi); | |
3811 | EXPORT_SYMBOL(ipmi_register_for_cmd); | |
3812 | EXPORT_SYMBOL(ipmi_unregister_for_cmd); | |
3813 | EXPORT_SYMBOL(ipmi_smi_msg_received); | |
3814 | EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); | |
3815 | EXPORT_SYMBOL(ipmi_alloc_smi_msg); | |
3816 | EXPORT_SYMBOL(ipmi_addr_length); | |
3817 | EXPORT_SYMBOL(ipmi_validate_addr); | |
3818 | EXPORT_SYMBOL(ipmi_set_gets_events); | |
3819 | EXPORT_SYMBOL(ipmi_smi_watcher_register); | |
3820 | EXPORT_SYMBOL(ipmi_smi_watcher_unregister); | |
3821 | EXPORT_SYMBOL(ipmi_set_my_address); | |
3822 | EXPORT_SYMBOL(ipmi_get_my_address); | |
3823 | EXPORT_SYMBOL(ipmi_set_my_LUN); | |
3824 | EXPORT_SYMBOL(ipmi_get_my_LUN); | |
3825 | EXPORT_SYMBOL(ipmi_smi_add_proc_entry); | |
3826 | EXPORT_SYMBOL(ipmi_user_set_run_to_completion); | |
393d2cc3 | 3827 | EXPORT_SYMBOL(ipmi_free_recv_msg); |