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 | ||
1da177e4 LT |
34 | #include <linux/module.h> |
35 | #include <linux/errno.h> | |
36 | #include <asm/system.h> | |
1da177e4 LT |
37 | #include <linux/poll.h> |
38 | #include <linux/spinlock.h> | |
d6dfd131 | 39 | #include <linux/mutex.h> |
1da177e4 LT |
40 | #include <linux/slab.h> |
41 | #include <linux/ipmi.h> | |
42 | #include <linux/ipmi_smi.h> | |
43 | #include <linux/notifier.h> | |
44 | #include <linux/init.h> | |
45 | #include <linux/proc_fs.h> | |
393d2cc3 | 46 | #include <linux/rcupdate.h> |
1da177e4 LT |
47 | |
48 | #define PFX "IPMI message handler: " | |
1fdd75bd | 49 | |
f7caa1b5 | 50 | #define IPMI_DRIVER_VERSION "39.2" |
1da177e4 LT |
51 | |
52 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void); | |
53 | static int ipmi_init_msghandler(void); | |
54 | ||
0c8204b3 | 55 | static int initialized; |
1da177e4 | 56 | |
3b625943 | 57 | #ifdef CONFIG_PROC_FS |
0c8204b3 | 58 | static struct proc_dir_entry *proc_ipmi_root; |
3b625943 | 59 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 60 | |
b9675136 CM |
61 | /* Remain in auto-maintenance mode for this amount of time (in ms). */ |
62 | #define IPMI_MAINTENANCE_MODE_TIMEOUT 30000 | |
63 | ||
1da177e4 LT |
64 | #define MAX_EVENTS_IN_QUEUE 25 |
65 | ||
c70d7499 CM |
66 | /* |
67 | * Don't let a message sit in a queue forever, always time it with at lest | |
68 | * the max message timer. This is in milliseconds. | |
69 | */ | |
1da177e4 LT |
70 | #define MAX_MSG_TIMEOUT 60000 |
71 | ||
393d2cc3 CM |
72 | /* |
73 | * The main "user" data structure. | |
74 | */ | |
c70d7499 | 75 | struct ipmi_user { |
1da177e4 LT |
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 | ||
c70d7499 | 94 | struct cmd_rcvr { |
1da177e4 LT |
95 | struct list_head link; |
96 | ||
97 | ipmi_user_t user; | |
98 | unsigned char netfn; | |
99 | unsigned char cmd; | |
c69c3127 | 100 | unsigned int chans; |
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 | |
c70d7499 CM |
108 | * every individual deletion of a command. |
109 | */ | |
393d2cc3 | 110 | struct cmd_rcvr *next; |
1da177e4 LT |
111 | }; |
112 | ||
c70d7499 | 113 | struct seq_table { |
1da177e4 LT |
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 | ||
c70d7499 CM |
121 | /* |
122 | * To verify on an incoming send message response that this is | |
123 | * the message that the response is for, we keep a sequence id | |
124 | * and increment it every time we send a message. | |
125 | */ | |
1da177e4 LT |
126 | long seqid; |
127 | ||
c70d7499 CM |
128 | /* |
129 | * This is held so we can properly respond to the message on a | |
130 | * timeout, and it is used to hold the temporary data for | |
131 | * retransmission, too. | |
132 | */ | |
1da177e4 LT |
133 | struct ipmi_recv_msg *recv_msg; |
134 | }; | |
135 | ||
c70d7499 CM |
136 | /* |
137 | * Store the information in a msgid (long) to allow us to find a | |
138 | * sequence table entry from the msgid. | |
139 | */ | |
1da177e4 LT |
140 | #define STORE_SEQ_IN_MSGID(seq, seqid) (((seq&0xff)<<26) | (seqid&0x3ffffff)) |
141 | ||
142 | #define GET_SEQ_FROM_MSGID(msgid, seq, seqid) \ | |
143 | do { \ | |
144 | seq = ((msgid >> 26) & 0x3f); \ | |
145 | seqid = (msgid & 0x3fffff); \ | |
c70d7499 | 146 | } while (0) |
1da177e4 LT |
147 | |
148 | #define NEXT_SEQID(seqid) (((seqid) + 1) & 0x3fffff) | |
149 | ||
c70d7499 | 150 | struct ipmi_channel { |
1da177e4 LT |
151 | unsigned char medium; |
152 | unsigned char protocol; | |
c14979b9 | 153 | |
c70d7499 CM |
154 | /* |
155 | * My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, | |
156 | * but may be changed by the user. | |
157 | */ | |
c14979b9 CM |
158 | unsigned char address; |
159 | ||
c70d7499 CM |
160 | /* |
161 | * My LUN. This should generally stay the SMS LUN, but just in | |
162 | * case... | |
163 | */ | |
c14979b9 | 164 | unsigned char lun; |
1da177e4 LT |
165 | }; |
166 | ||
3b625943 | 167 | #ifdef CONFIG_PROC_FS |
c70d7499 | 168 | struct ipmi_proc_entry { |
1da177e4 LT |
169 | char *name; |
170 | struct ipmi_proc_entry *next; | |
171 | }; | |
3b625943 | 172 | #endif |
1da177e4 | 173 | |
c70d7499 | 174 | struct bmc_device { |
50c812b2 CM |
175 | struct platform_device *dev; |
176 | struct ipmi_device_id id; | |
177 | unsigned char guid[16]; | |
178 | int guid_set; | |
179 | ||
180 | struct kref refcount; | |
181 | ||
182 | /* bmc device attributes */ | |
183 | struct device_attribute device_id_attr; | |
184 | struct device_attribute provides_dev_sdrs_attr; | |
185 | struct device_attribute revision_attr; | |
186 | struct device_attribute firmware_rev_attr; | |
187 | struct device_attribute version_attr; | |
188 | struct device_attribute add_dev_support_attr; | |
189 | struct device_attribute manufacturer_id_attr; | |
190 | struct device_attribute product_id_attr; | |
191 | struct device_attribute guid_attr; | |
192 | struct device_attribute aux_firmware_rev_attr; | |
193 | }; | |
194 | ||
b2655f26 KB |
195 | /* |
196 | * Various statistics for IPMI, these index stats[] in the ipmi_smi | |
197 | * structure. | |
198 | */ | |
73f2bdb9 CM |
199 | enum ipmi_stat_indexes { |
200 | /* Commands we got from the user that were invalid. */ | |
201 | IPMI_STAT_sent_invalid_commands = 0, | |
b2655f26 | 202 | |
73f2bdb9 CM |
203 | /* Commands we sent to the MC. */ |
204 | IPMI_STAT_sent_local_commands, | |
b2655f26 | 205 | |
73f2bdb9 CM |
206 | /* Responses from the MC that were delivered to a user. */ |
207 | IPMI_STAT_handled_local_responses, | |
b2655f26 | 208 | |
73f2bdb9 CM |
209 | /* Responses from the MC that were not delivered to a user. */ |
210 | IPMI_STAT_unhandled_local_responses, | |
b2655f26 | 211 | |
73f2bdb9 CM |
212 | /* Commands we sent out to the IPMB bus. */ |
213 | IPMI_STAT_sent_ipmb_commands, | |
b2655f26 | 214 | |
73f2bdb9 CM |
215 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
216 | IPMI_STAT_sent_ipmb_command_errs, | |
b2655f26 | 217 | |
73f2bdb9 CM |
218 | /* Each retransmit increments this count. */ |
219 | IPMI_STAT_retransmitted_ipmb_commands, | |
b2655f26 | 220 | |
73f2bdb9 CM |
221 | /* |
222 | * When a message times out (runs out of retransmits) this is | |
223 | * incremented. | |
224 | */ | |
225 | IPMI_STAT_timed_out_ipmb_commands, | |
b2655f26 | 226 | |
73f2bdb9 CM |
227 | /* |
228 | * This is like above, but for broadcasts. Broadcasts are | |
229 | * *not* included in the above count (they are expected to | |
230 | * time out). | |
231 | */ | |
232 | IPMI_STAT_timed_out_ipmb_broadcasts, | |
b2655f26 | 233 | |
73f2bdb9 CM |
234 | /* Responses I have sent to the IPMB bus. */ |
235 | IPMI_STAT_sent_ipmb_responses, | |
b2655f26 | 236 | |
73f2bdb9 CM |
237 | /* The response was delivered to the user. */ |
238 | IPMI_STAT_handled_ipmb_responses, | |
b2655f26 | 239 | |
73f2bdb9 CM |
240 | /* The response had invalid data in it. */ |
241 | IPMI_STAT_invalid_ipmb_responses, | |
b2655f26 | 242 | |
73f2bdb9 CM |
243 | /* The response didn't have anyone waiting for it. */ |
244 | IPMI_STAT_unhandled_ipmb_responses, | |
b2655f26 | 245 | |
73f2bdb9 CM |
246 | /* Commands we sent out to the IPMB bus. */ |
247 | IPMI_STAT_sent_lan_commands, | |
b2655f26 | 248 | |
73f2bdb9 CM |
249 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
250 | IPMI_STAT_sent_lan_command_errs, | |
b2655f26 | 251 | |
73f2bdb9 CM |
252 | /* Each retransmit increments this count. */ |
253 | IPMI_STAT_retransmitted_lan_commands, | |
b2655f26 | 254 | |
73f2bdb9 CM |
255 | /* |
256 | * When a message times out (runs out of retransmits) this is | |
257 | * incremented. | |
258 | */ | |
259 | IPMI_STAT_timed_out_lan_commands, | |
260 | ||
261 | /* Responses I have sent to the IPMB bus. */ | |
262 | IPMI_STAT_sent_lan_responses, | |
b2655f26 | 263 | |
73f2bdb9 CM |
264 | /* The response was delivered to the user. */ |
265 | IPMI_STAT_handled_lan_responses, | |
b2655f26 | 266 | |
73f2bdb9 CM |
267 | /* The response had invalid data in it. */ |
268 | IPMI_STAT_invalid_lan_responses, | |
b2655f26 | 269 | |
73f2bdb9 CM |
270 | /* The response didn't have anyone waiting for it. */ |
271 | IPMI_STAT_unhandled_lan_responses, | |
b2655f26 | 272 | |
73f2bdb9 CM |
273 | /* The command was delivered to the user. */ |
274 | IPMI_STAT_handled_commands, | |
b2655f26 | 275 | |
73f2bdb9 CM |
276 | /* The command had invalid data in it. */ |
277 | IPMI_STAT_invalid_commands, | |
b2655f26 | 278 | |
73f2bdb9 CM |
279 | /* The command didn't have anyone waiting for it. */ |
280 | IPMI_STAT_unhandled_commands, | |
b2655f26 | 281 | |
73f2bdb9 CM |
282 | /* Invalid data in an event. */ |
283 | IPMI_STAT_invalid_events, | |
b2655f26 | 284 | |
73f2bdb9 CM |
285 | /* Events that were received with the proper format. */ |
286 | IPMI_STAT_events, | |
b2655f26 | 287 | |
25176ed6 CM |
288 | /* Retransmissions on IPMB that failed. */ |
289 | IPMI_STAT_dropped_rexmit_ipmb_commands, | |
290 | ||
291 | /* Retransmissions on LAN that failed. */ | |
292 | IPMI_STAT_dropped_rexmit_lan_commands, | |
b2655f26 | 293 | |
73f2bdb9 CM |
294 | /* This *must* remain last, add new values above this. */ |
295 | IPMI_NUM_STATS | |
296 | }; | |
b2655f26 KB |
297 | |
298 | ||
1da177e4 | 299 | #define IPMI_IPMB_NUM_SEQ 64 |
c14979b9 | 300 | #define IPMI_MAX_CHANNELS 16 |
c70d7499 | 301 | struct ipmi_smi { |
1da177e4 LT |
302 | /* What interface number are we? */ |
303 | int intf_num; | |
304 | ||
393d2cc3 CM |
305 | struct kref refcount; |
306 | ||
bca0324d CM |
307 | /* Used for a list of interfaces. */ |
308 | struct list_head link; | |
309 | ||
c70d7499 CM |
310 | /* |
311 | * The list of upper layers that are using me. seq_lock | |
312 | * protects this. | |
313 | */ | |
393d2cc3 | 314 | struct list_head users; |
1da177e4 | 315 | |
b2c03941 CM |
316 | /* Information to supply to users. */ |
317 | unsigned char ipmi_version_major; | |
318 | unsigned char ipmi_version_minor; | |
319 | ||
1da177e4 LT |
320 | /* Used for wake ups at startup. */ |
321 | wait_queue_head_t waitq; | |
322 | ||
50c812b2 CM |
323 | struct bmc_device *bmc; |
324 | char *my_dev_name; | |
759643b8 | 325 | char *sysfs_name; |
1da177e4 | 326 | |
c70d7499 CM |
327 | /* |
328 | * This is the lower-layer's sender routine. Note that you | |
b2c03941 CM |
329 | * must either be holding the ipmi_interfaces_mutex or be in |
330 | * an umpreemptible region to use this. You must fetch the | |
c70d7499 CM |
331 | * value into a local variable and make sure it is not NULL. |
332 | */ | |
1da177e4 LT |
333 | struct ipmi_smi_handlers *handlers; |
334 | void *send_info; | |
335 | ||
3b625943 | 336 | #ifdef CONFIG_PROC_FS |
ac019151 CM |
337 | /* A list of proc entries for this interface. */ |
338 | struct mutex proc_entry_lock; | |
1da177e4 | 339 | struct ipmi_proc_entry *proc_entries; |
3b625943 | 340 | #endif |
1da177e4 | 341 | |
50c812b2 CM |
342 | /* Driver-model device for the system interface. */ |
343 | struct device *si_dev; | |
344 | ||
c70d7499 CM |
345 | /* |
346 | * A table of sequence numbers for this interface. We use the | |
347 | * sequence numbers for IPMB messages that go out of the | |
348 | * interface to match them up with their responses. A routine | |
349 | * is called periodically to time the items in this list. | |
350 | */ | |
1da177e4 LT |
351 | spinlock_t seq_lock; |
352 | struct seq_table seq_table[IPMI_IPMB_NUM_SEQ]; | |
353 | int curr_seq; | |
354 | ||
c70d7499 CM |
355 | /* |
356 | * Messages that were delayed for some reason (out of memory, | |
357 | * for instance), will go in here to be processed later in a | |
358 | * periodic timer interrupt. | |
359 | */ | |
1da177e4 LT |
360 | spinlock_t waiting_msgs_lock; |
361 | struct list_head waiting_msgs; | |
362 | ||
c70d7499 CM |
363 | /* |
364 | * The list of command receivers that are registered for commands | |
365 | * on this interface. | |
366 | */ | |
d6dfd131 | 367 | struct mutex cmd_rcvrs_mutex; |
1da177e4 LT |
368 | struct list_head cmd_rcvrs; |
369 | ||
c70d7499 CM |
370 | /* |
371 | * Events that were queues because no one was there to receive | |
372 | * them. | |
373 | */ | |
1da177e4 LT |
374 | spinlock_t events_lock; /* For dealing with event stuff. */ |
375 | struct list_head waiting_events; | |
376 | unsigned int waiting_events_count; /* How many events in queue? */ | |
87ebd06f CM |
377 | char delivering_events; |
378 | char event_msg_printed; | |
1da177e4 | 379 | |
c70d7499 CM |
380 | /* |
381 | * The event receiver for my BMC, only really used at panic | |
382 | * shutdown as a place to store this. | |
383 | */ | |
1da177e4 LT |
384 | unsigned char event_receiver; |
385 | unsigned char event_receiver_lun; | |
386 | unsigned char local_sel_device; | |
387 | unsigned char local_event_generator; | |
388 | ||
b9675136 CM |
389 | /* For handling of maintenance mode. */ |
390 | int maintenance_mode; | |
391 | int maintenance_mode_enable; | |
392 | int auto_maintenance_timeout; | |
393 | spinlock_t maintenance_mode_lock; /* Used in a timer... */ | |
394 | ||
c70d7499 CM |
395 | /* |
396 | * A cheap hack, if this is non-null and a message to an | |
397 | * interface comes in with a NULL user, call this routine with | |
398 | * it. Note that the message will still be freed by the | |
399 | * caller. This only works on the system interface. | |
400 | */ | |
56a55ec6 | 401 | void (*null_user_handler)(ipmi_smi_t intf, struct ipmi_recv_msg *msg); |
1da177e4 | 402 | |
c70d7499 CM |
403 | /* |
404 | * When we are scanning the channels for an SMI, this will | |
405 | * tell which channel we are scanning. | |
406 | */ | |
1da177e4 LT |
407 | int curr_channel; |
408 | ||
409 | /* Channel information */ | |
410 | struct ipmi_channel channels[IPMI_MAX_CHANNELS]; | |
411 | ||
412 | /* Proc FS stuff. */ | |
413 | struct proc_dir_entry *proc_dir; | |
414 | char proc_dir_name[10]; | |
415 | ||
b2655f26 | 416 | atomic_t stats[IPMI_NUM_STATS]; |
5956dce1 KB |
417 | |
418 | /* | |
419 | * run_to_completion duplicate of smb_info, smi_info | |
420 | * and ipmi_serial_info structures. Used to decrease numbers of | |
421 | * parameters passed by "low" level IPMI code. | |
422 | */ | |
423 | int run_to_completion; | |
1da177e4 | 424 | }; |
50c812b2 | 425 | #define to_si_intf_from_dev(device) container_of(device, struct ipmi_smi, dev) |
1da177e4 | 426 | |
50c812b2 CM |
427 | /** |
428 | * The driver model view of the IPMI messaging driver. | |
429 | */ | |
fe2d5ffc DW |
430 | static struct platform_driver ipmidriver = { |
431 | .driver = { | |
432 | .name = "ipmi", | |
433 | .bus = &platform_bus_type | |
434 | } | |
50c812b2 CM |
435 | }; |
436 | static DEFINE_MUTEX(ipmidriver_mutex); | |
437 | ||
bed9759b | 438 | static LIST_HEAD(ipmi_interfaces); |
bca0324d | 439 | static DEFINE_MUTEX(ipmi_interfaces_mutex); |
1da177e4 | 440 | |
c70d7499 CM |
441 | /* |
442 | * List of watchers that want to know when smi's are added and deleted. | |
443 | */ | |
bed9759b | 444 | static LIST_HEAD(smi_watchers); |
b2c03941 | 445 | static DEFINE_MUTEX(smi_watchers_mutex); |
1da177e4 | 446 | |
393d2cc3 | 447 | |
b2655f26 KB |
448 | #define ipmi_inc_stat(intf, stat) \ |
449 | atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat]) | |
450 | #define ipmi_get_stat(intf, stat) \ | |
451 | ((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat])) | |
452 | ||
25176ed6 CM |
453 | static int is_lan_addr(struct ipmi_addr *addr) |
454 | { | |
455 | return addr->addr_type == IPMI_LAN_ADDR_TYPE; | |
456 | } | |
457 | ||
458 | static int is_ipmb_addr(struct ipmi_addr *addr) | |
459 | { | |
460 | return addr->addr_type == IPMI_IPMB_ADDR_TYPE; | |
461 | } | |
462 | ||
463 | static int is_ipmb_bcast_addr(struct ipmi_addr *addr) | |
464 | { | |
465 | return addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE; | |
466 | } | |
b2655f26 | 467 | |
393d2cc3 CM |
468 | static void free_recv_msg_list(struct list_head *q) |
469 | { | |
470 | struct ipmi_recv_msg *msg, *msg2; | |
471 | ||
472 | list_for_each_entry_safe(msg, msg2, q, link) { | |
473 | list_del(&msg->link); | |
474 | ipmi_free_recv_msg(msg); | |
475 | } | |
476 | } | |
477 | ||
f3ce6a0e CM |
478 | static void free_smi_msg_list(struct list_head *q) |
479 | { | |
480 | struct ipmi_smi_msg *msg, *msg2; | |
481 | ||
482 | list_for_each_entry_safe(msg, msg2, q, link) { | |
483 | list_del(&msg->link); | |
484 | ipmi_free_smi_msg(msg); | |
485 | } | |
486 | } | |
487 | ||
393d2cc3 CM |
488 | static void clean_up_interface_data(ipmi_smi_t intf) |
489 | { | |
490 | int i; | |
491 | struct cmd_rcvr *rcvr, *rcvr2; | |
393d2cc3 CM |
492 | struct list_head list; |
493 | ||
f3ce6a0e | 494 | free_smi_msg_list(&intf->waiting_msgs); |
393d2cc3 CM |
495 | free_recv_msg_list(&intf->waiting_events); |
496 | ||
78ba2faf CM |
497 | /* |
498 | * Wholesale remove all the entries from the list in the | |
499 | * interface and wait for RCU to know that none are in use. | |
500 | */ | |
d6dfd131 | 501 | mutex_lock(&intf->cmd_rcvrs_mutex); |
78ba2faf CM |
502 | INIT_LIST_HEAD(&list); |
503 | list_splice_init_rcu(&intf->cmd_rcvrs, &list, synchronize_rcu); | |
d6dfd131 | 504 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
505 | |
506 | list_for_each_entry_safe(rcvr, rcvr2, &list, link) | |
507 | kfree(rcvr); | |
508 | ||
509 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { | |
510 | if ((intf->seq_table[i].inuse) | |
c70d7499 | 511 | && (intf->seq_table[i].recv_msg)) |
393d2cc3 | 512 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
393d2cc3 CM |
513 | } |
514 | } | |
515 | ||
516 | static void intf_free(struct kref *ref) | |
517 | { | |
518 | ipmi_smi_t intf = container_of(ref, struct ipmi_smi, refcount); | |
519 | ||
520 | clean_up_interface_data(intf); | |
521 | kfree(intf); | |
522 | } | |
523 | ||
bca0324d | 524 | struct watcher_entry { |
b2c03941 CM |
525 | int intf_num; |
526 | ipmi_smi_t intf; | |
bca0324d | 527 | struct list_head link; |
bca0324d CM |
528 | }; |
529 | ||
1da177e4 LT |
530 | int ipmi_smi_watcher_register(struct ipmi_smi_watcher *watcher) |
531 | { | |
bca0324d | 532 | ipmi_smi_t intf; |
e381d1c4 | 533 | LIST_HEAD(to_deliver); |
bca0324d CM |
534 | struct watcher_entry *e, *e2; |
535 | ||
b2c03941 CM |
536 | mutex_lock(&smi_watchers_mutex); |
537 | ||
bca0324d CM |
538 | mutex_lock(&ipmi_interfaces_mutex); |
539 | ||
b2c03941 | 540 | /* Build a list of things to deliver. */ |
78ba2faf | 541 | list_for_each_entry(intf, &ipmi_interfaces, link) { |
bca0324d CM |
542 | if (intf->intf_num == -1) |
543 | continue; | |
544 | e = kmalloc(sizeof(*e), GFP_KERNEL); | |
545 | if (!e) | |
546 | goto out_err; | |
b2c03941 CM |
547 | kref_get(&intf->refcount); |
548 | e->intf = intf; | |
bca0324d CM |
549 | e->intf_num = intf->intf_num; |
550 | list_add_tail(&e->link, &to_deliver); | |
551 | } | |
1da177e4 | 552 | |
b2c03941 CM |
553 | /* We will succeed, so add it to the list. */ |
554 | list_add(&watcher->link, &smi_watchers); | |
bca0324d CM |
555 | |
556 | mutex_unlock(&ipmi_interfaces_mutex); | |
557 | ||
558 | list_for_each_entry_safe(e, e2, &to_deliver, link) { | |
559 | list_del(&e->link); | |
b2c03941 CM |
560 | watcher->new_smi(e->intf_num, e->intf->si_dev); |
561 | kref_put(&e->intf->refcount, intf_free); | |
bca0324d | 562 | kfree(e); |
1da177e4 | 563 | } |
bca0324d | 564 | |
b2c03941 | 565 | mutex_unlock(&smi_watchers_mutex); |
bca0324d | 566 | |
1da177e4 | 567 | return 0; |
bca0324d CM |
568 | |
569 | out_err: | |
b2c03941 CM |
570 | mutex_unlock(&ipmi_interfaces_mutex); |
571 | mutex_unlock(&smi_watchers_mutex); | |
bca0324d CM |
572 | list_for_each_entry_safe(e, e2, &to_deliver, link) { |
573 | list_del(&e->link); | |
b2c03941 | 574 | kref_put(&e->intf->refcount, intf_free); |
bca0324d CM |
575 | kfree(e); |
576 | } | |
577 | return -ENOMEM; | |
1da177e4 | 578 | } |
c70d7499 | 579 | EXPORT_SYMBOL(ipmi_smi_watcher_register); |
1da177e4 LT |
580 | |
581 | int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher) | |
582 | { | |
b2c03941 | 583 | mutex_lock(&smi_watchers_mutex); |
1da177e4 | 584 | list_del(&(watcher->link)); |
b2c03941 | 585 | mutex_unlock(&smi_watchers_mutex); |
1da177e4 LT |
586 | return 0; |
587 | } | |
c70d7499 | 588 | EXPORT_SYMBOL(ipmi_smi_watcher_unregister); |
1da177e4 | 589 | |
b2c03941 CM |
590 | /* |
591 | * Must be called with smi_watchers_mutex held. | |
592 | */ | |
1da177e4 | 593 | static void |
50c812b2 | 594 | call_smi_watchers(int i, struct device *dev) |
1da177e4 LT |
595 | { |
596 | struct ipmi_smi_watcher *w; | |
597 | ||
1da177e4 LT |
598 | list_for_each_entry(w, &smi_watchers, link) { |
599 | if (try_module_get(w->owner)) { | |
50c812b2 | 600 | w->new_smi(i, dev); |
1da177e4 LT |
601 | module_put(w->owner); |
602 | } | |
603 | } | |
1da177e4 LT |
604 | } |
605 | ||
606 | static int | |
607 | ipmi_addr_equal(struct ipmi_addr *addr1, struct ipmi_addr *addr2) | |
608 | { | |
609 | if (addr1->addr_type != addr2->addr_type) | |
610 | return 0; | |
611 | ||
612 | if (addr1->channel != addr2->channel) | |
613 | return 0; | |
614 | ||
615 | if (addr1->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
616 | struct ipmi_system_interface_addr *smi_addr1 | |
617 | = (struct ipmi_system_interface_addr *) addr1; | |
618 | struct ipmi_system_interface_addr *smi_addr2 | |
619 | = (struct ipmi_system_interface_addr *) addr2; | |
620 | return (smi_addr1->lun == smi_addr2->lun); | |
621 | } | |
622 | ||
25176ed6 | 623 | if (is_ipmb_addr(addr1) || is_ipmb_bcast_addr(addr1)) { |
1da177e4 LT |
624 | struct ipmi_ipmb_addr *ipmb_addr1 |
625 | = (struct ipmi_ipmb_addr *) addr1; | |
626 | struct ipmi_ipmb_addr *ipmb_addr2 | |
627 | = (struct ipmi_ipmb_addr *) addr2; | |
628 | ||
629 | return ((ipmb_addr1->slave_addr == ipmb_addr2->slave_addr) | |
630 | && (ipmb_addr1->lun == ipmb_addr2->lun)); | |
631 | } | |
632 | ||
25176ed6 | 633 | if (is_lan_addr(addr1)) { |
1da177e4 LT |
634 | struct ipmi_lan_addr *lan_addr1 |
635 | = (struct ipmi_lan_addr *) addr1; | |
636 | struct ipmi_lan_addr *lan_addr2 | |
637 | = (struct ipmi_lan_addr *) addr2; | |
638 | ||
639 | return ((lan_addr1->remote_SWID == lan_addr2->remote_SWID) | |
640 | && (lan_addr1->local_SWID == lan_addr2->local_SWID) | |
641 | && (lan_addr1->session_handle | |
642 | == lan_addr2->session_handle) | |
643 | && (lan_addr1->lun == lan_addr2->lun)); | |
644 | } | |
645 | ||
646 | return 1; | |
647 | } | |
648 | ||
649 | int ipmi_validate_addr(struct ipmi_addr *addr, int len) | |
650 | { | |
c70d7499 | 651 | if (len < sizeof(struct ipmi_system_interface_addr)) |
1da177e4 | 652 | return -EINVAL; |
1da177e4 LT |
653 | |
654 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
655 | if (addr->channel != IPMI_BMC_CHANNEL) | |
656 | return -EINVAL; | |
657 | return 0; | |
658 | } | |
659 | ||
660 | if ((addr->channel == IPMI_BMC_CHANNEL) | |
12fc1d7b | 661 | || (addr->channel >= IPMI_MAX_CHANNELS) |
1da177e4 LT |
662 | || (addr->channel < 0)) |
663 | return -EINVAL; | |
664 | ||
25176ed6 | 665 | if (is_ipmb_addr(addr) || is_ipmb_bcast_addr(addr)) { |
c70d7499 | 666 | if (len < sizeof(struct ipmi_ipmb_addr)) |
1da177e4 | 667 | return -EINVAL; |
1da177e4 LT |
668 | return 0; |
669 | } | |
670 | ||
25176ed6 | 671 | if (is_lan_addr(addr)) { |
c70d7499 | 672 | if (len < sizeof(struct ipmi_lan_addr)) |
1da177e4 | 673 | return -EINVAL; |
1da177e4 LT |
674 | return 0; |
675 | } | |
676 | ||
677 | return -EINVAL; | |
678 | } | |
c70d7499 | 679 | EXPORT_SYMBOL(ipmi_validate_addr); |
1da177e4 LT |
680 | |
681 | unsigned int ipmi_addr_length(int addr_type) | |
682 | { | |
683 | if (addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
684 | return sizeof(struct ipmi_system_interface_addr); | |
685 | ||
686 | if ((addr_type == IPMI_IPMB_ADDR_TYPE) | |
c70d7499 | 687 | || (addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
1da177e4 | 688 | return sizeof(struct ipmi_ipmb_addr); |
1da177e4 LT |
689 | |
690 | if (addr_type == IPMI_LAN_ADDR_TYPE) | |
691 | return sizeof(struct ipmi_lan_addr); | |
692 | ||
693 | return 0; | |
694 | } | |
c70d7499 | 695 | EXPORT_SYMBOL(ipmi_addr_length); |
1da177e4 LT |
696 | |
697 | static void deliver_response(struct ipmi_recv_msg *msg) | |
698 | { | |
8a3628d5 | 699 | if (!msg->user) { |
56a55ec6 | 700 | ipmi_smi_t intf = msg->user_msg_data; |
56a55ec6 CM |
701 | |
702 | /* Special handling for NULL users. */ | |
703 | if (intf->null_user_handler) { | |
704 | intf->null_user_handler(intf, msg); | |
b2655f26 | 705 | ipmi_inc_stat(intf, handled_local_responses); |
56a55ec6 CM |
706 | } else { |
707 | /* No handler, so give up. */ | |
b2655f26 | 708 | ipmi_inc_stat(intf, unhandled_local_responses); |
56a55ec6 CM |
709 | } |
710 | ipmi_free_recv_msg(msg); | |
711 | } else { | |
393d2cc3 CM |
712 | ipmi_user_t user = msg->user; |
713 | user->handler->ipmi_recv_hndl(msg, user->handler_data); | |
56a55ec6 | 714 | } |
1da177e4 LT |
715 | } |
716 | ||
b2c03941 CM |
717 | static void |
718 | deliver_err_response(struct ipmi_recv_msg *msg, int err) | |
719 | { | |
720 | msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
721 | msg->msg_data[0] = err; | |
722 | msg->msg.netfn |= 1; /* Convert to a response. */ | |
723 | msg->msg.data_len = 1; | |
724 | msg->msg.data = msg->msg_data; | |
725 | deliver_response(msg); | |
726 | } | |
727 | ||
c70d7499 CM |
728 | /* |
729 | * Find the next sequence number not being used and add the given | |
730 | * message with the given timeout to the sequence table. This must be | |
731 | * called with the interface's seq_lock held. | |
732 | */ | |
1da177e4 LT |
733 | static int intf_next_seq(ipmi_smi_t intf, |
734 | struct ipmi_recv_msg *recv_msg, | |
735 | unsigned long timeout, | |
736 | int retries, | |
737 | int broadcast, | |
738 | unsigned char *seq, | |
739 | long *seqid) | |
740 | { | |
741 | int rv = 0; | |
742 | unsigned int i; | |
743 | ||
c70d7499 CM |
744 | for (i = intf->curr_seq; (i+1)%IPMI_IPMB_NUM_SEQ != intf->curr_seq; |
745 | i = (i+1)%IPMI_IPMB_NUM_SEQ) { | |
8a3628d5 | 746 | if (!intf->seq_table[i].inuse) |
1da177e4 LT |
747 | break; |
748 | } | |
749 | ||
8a3628d5 | 750 | if (!intf->seq_table[i].inuse) { |
1da177e4 LT |
751 | intf->seq_table[i].recv_msg = recv_msg; |
752 | ||
c70d7499 CM |
753 | /* |
754 | * Start with the maximum timeout, when the send response | |
755 | * comes in we will start the real timer. | |
756 | */ | |
1da177e4 LT |
757 | intf->seq_table[i].timeout = MAX_MSG_TIMEOUT; |
758 | intf->seq_table[i].orig_timeout = timeout; | |
759 | intf->seq_table[i].retries_left = retries; | |
760 | intf->seq_table[i].broadcast = broadcast; | |
761 | intf->seq_table[i].inuse = 1; | |
762 | intf->seq_table[i].seqid = NEXT_SEQID(intf->seq_table[i].seqid); | |
763 | *seq = i; | |
764 | *seqid = intf->seq_table[i].seqid; | |
765 | intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ; | |
766 | } else { | |
767 | rv = -EAGAIN; | |
768 | } | |
c70d7499 | 769 | |
1da177e4 LT |
770 | return rv; |
771 | } | |
772 | ||
c70d7499 CM |
773 | /* |
774 | * Return the receive message for the given sequence number and | |
775 | * release the sequence number so it can be reused. Some other data | |
776 | * is passed in to be sure the message matches up correctly (to help | |
777 | * guard against message coming in after their timeout and the | |
778 | * sequence number being reused). | |
779 | */ | |
1da177e4 LT |
780 | static int intf_find_seq(ipmi_smi_t intf, |
781 | unsigned char seq, | |
782 | short channel, | |
783 | unsigned char cmd, | |
784 | unsigned char netfn, | |
785 | struct ipmi_addr *addr, | |
786 | struct ipmi_recv_msg **recv_msg) | |
787 | { | |
788 | int rv = -ENODEV; | |
789 | unsigned long flags; | |
790 | ||
791 | if (seq >= IPMI_IPMB_NUM_SEQ) | |
792 | return -EINVAL; | |
793 | ||
794 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
795 | if (intf->seq_table[seq].inuse) { | |
796 | struct ipmi_recv_msg *msg = intf->seq_table[seq].recv_msg; | |
797 | ||
c70d7499 CM |
798 | if ((msg->addr.channel == channel) && (msg->msg.cmd == cmd) |
799 | && (msg->msg.netfn == netfn) | |
800 | && (ipmi_addr_equal(addr, &(msg->addr)))) { | |
1da177e4 LT |
801 | *recv_msg = msg; |
802 | intf->seq_table[seq].inuse = 0; | |
803 | rv = 0; | |
804 | } | |
805 | } | |
806 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
807 | ||
808 | return rv; | |
809 | } | |
810 | ||
811 | ||
812 | /* Start the timer for a specific sequence table entry. */ | |
813 | static int intf_start_seq_timer(ipmi_smi_t intf, | |
814 | long msgid) | |
815 | { | |
816 | int rv = -ENODEV; | |
817 | unsigned long flags; | |
818 | unsigned char seq; | |
819 | unsigned long seqid; | |
820 | ||
821 | ||
822 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); | |
823 | ||
824 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
c70d7499 CM |
825 | /* |
826 | * We do this verification because the user can be deleted | |
827 | * while a message is outstanding. | |
828 | */ | |
1da177e4 | 829 | if ((intf->seq_table[seq].inuse) |
c70d7499 | 830 | && (intf->seq_table[seq].seqid == seqid)) { |
1da177e4 LT |
831 | struct seq_table *ent = &(intf->seq_table[seq]); |
832 | ent->timeout = ent->orig_timeout; | |
833 | rv = 0; | |
834 | } | |
835 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
836 | ||
837 | return rv; | |
838 | } | |
839 | ||
840 | /* Got an error for the send message for a specific sequence number. */ | |
841 | static int intf_err_seq(ipmi_smi_t intf, | |
842 | long msgid, | |
843 | unsigned int err) | |
844 | { | |
845 | int rv = -ENODEV; | |
846 | unsigned long flags; | |
847 | unsigned char seq; | |
848 | unsigned long seqid; | |
849 | struct ipmi_recv_msg *msg = NULL; | |
850 | ||
851 | ||
852 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); | |
853 | ||
854 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
c70d7499 CM |
855 | /* |
856 | * We do this verification because the user can be deleted | |
857 | * while a message is outstanding. | |
858 | */ | |
1da177e4 | 859 | if ((intf->seq_table[seq].inuse) |
c70d7499 | 860 | && (intf->seq_table[seq].seqid == seqid)) { |
1da177e4 LT |
861 | struct seq_table *ent = &(intf->seq_table[seq]); |
862 | ||
863 | ent->inuse = 0; | |
864 | msg = ent->recv_msg; | |
865 | rv = 0; | |
866 | } | |
867 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
868 | ||
b2c03941 CM |
869 | if (msg) |
870 | deliver_err_response(msg, err); | |
1da177e4 LT |
871 | |
872 | return rv; | |
873 | } | |
874 | ||
875 | ||
876 | int ipmi_create_user(unsigned int if_num, | |
877 | struct ipmi_user_hndl *handler, | |
878 | void *handler_data, | |
879 | ipmi_user_t *user) | |
880 | { | |
881 | unsigned long flags; | |
882 | ipmi_user_t new_user; | |
883 | int rv = 0; | |
884 | ipmi_smi_t intf; | |
885 | ||
c70d7499 CM |
886 | /* |
887 | * There is no module usecount here, because it's not | |
888 | * required. Since this can only be used by and called from | |
889 | * other modules, they will implicitly use this module, and | |
890 | * thus this can't be removed unless the other modules are | |
891 | * removed. | |
892 | */ | |
1da177e4 LT |
893 | |
894 | if (handler == NULL) | |
895 | return -EINVAL; | |
896 | ||
c70d7499 CM |
897 | /* |
898 | * Make sure the driver is actually initialized, this handles | |
899 | * problems with initialization order. | |
900 | */ | |
1da177e4 LT |
901 | if (!initialized) { |
902 | rv = ipmi_init_msghandler(); | |
903 | if (rv) | |
904 | return rv; | |
905 | ||
c70d7499 CM |
906 | /* |
907 | * The init code doesn't return an error if it was turned | |
908 | * off, but it won't initialize. Check that. | |
909 | */ | |
1da177e4 LT |
910 | if (!initialized) |
911 | return -ENODEV; | |
912 | } | |
913 | ||
914 | new_user = kmalloc(sizeof(*new_user), GFP_KERNEL); | |
8a3628d5 | 915 | if (!new_user) |
1da177e4 LT |
916 | return -ENOMEM; |
917 | ||
b2c03941 | 918 | mutex_lock(&ipmi_interfaces_mutex); |
bca0324d CM |
919 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
920 | if (intf->intf_num == if_num) | |
921 | goto found; | |
1da177e4 | 922 | } |
b2c03941 | 923 | /* Not found, return an error */ |
bca0324d CM |
924 | rv = -EINVAL; |
925 | goto out_kfree; | |
1da177e4 | 926 | |
bca0324d | 927 | found: |
393d2cc3 CM |
928 | /* Note that each existing user holds a refcount to the interface. */ |
929 | kref_get(&intf->refcount); | |
1da177e4 | 930 | |
393d2cc3 | 931 | kref_init(&new_user->refcount); |
1da177e4 LT |
932 | new_user->handler = handler; |
933 | new_user->handler_data = handler_data; | |
934 | new_user->intf = intf; | |
935 | new_user->gets_events = 0; | |
936 | ||
937 | if (!try_module_get(intf->handlers->owner)) { | |
938 | rv = -ENODEV; | |
5c98d29a | 939 | goto out_kref; |
1da177e4 LT |
940 | } |
941 | ||
942 | if (intf->handlers->inc_usecount) { | |
943 | rv = intf->handlers->inc_usecount(intf->send_info); | |
944 | if (rv) { | |
945 | module_put(intf->handlers->owner); | |
5c98d29a | 946 | goto out_kref; |
1da177e4 LT |
947 | } |
948 | } | |
949 | ||
c70d7499 CM |
950 | /* |
951 | * Hold the lock so intf->handlers is guaranteed to be good | |
952 | * until now | |
953 | */ | |
b2c03941 CM |
954 | mutex_unlock(&ipmi_interfaces_mutex); |
955 | ||
393d2cc3 CM |
956 | new_user->valid = 1; |
957 | spin_lock_irqsave(&intf->seq_lock, flags); | |
958 | list_add_rcu(&new_user->link, &intf->users); | |
959 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
960 | *user = new_user; | |
961 | return 0; | |
1da177e4 | 962 | |
5c98d29a | 963 | out_kref: |
393d2cc3 | 964 | kref_put(&intf->refcount, intf_free); |
5c98d29a | 965 | out_kfree: |
b2c03941 | 966 | mutex_unlock(&ipmi_interfaces_mutex); |
5c98d29a | 967 | kfree(new_user); |
1da177e4 LT |
968 | return rv; |
969 | } | |
c70d7499 | 970 | EXPORT_SYMBOL(ipmi_create_user); |
1da177e4 | 971 | |
393d2cc3 CM |
972 | static void free_user(struct kref *ref) |
973 | { | |
974 | ipmi_user_t user = container_of(ref, struct ipmi_user, refcount); | |
975 | kfree(user); | |
976 | } | |
977 | ||
978 | int ipmi_destroy_user(ipmi_user_t user) | |
1da177e4 | 979 | { |
393d2cc3 | 980 | ipmi_smi_t intf = user->intf; |
1da177e4 LT |
981 | int i; |
982 | unsigned long flags; | |
393d2cc3 | 983 | struct cmd_rcvr *rcvr; |
393d2cc3 | 984 | struct cmd_rcvr *rcvrs = NULL; |
1da177e4 | 985 | |
8a3628d5 | 986 | user->valid = 0; |
1da177e4 | 987 | |
393d2cc3 CM |
988 | /* Remove the user from the interface's sequence table. */ |
989 | spin_lock_irqsave(&intf->seq_lock, flags); | |
990 | list_del_rcu(&user->link); | |
1da177e4 | 991 | |
e8b33617 | 992 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
393d2cc3 | 993 | if (intf->seq_table[i].inuse |
c70d7499 | 994 | && (intf->seq_table[i].recv_msg->user == user)) { |
393d2cc3 | 995 | intf->seq_table[i].inuse = 0; |
b2c03941 | 996 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
1da177e4 LT |
997 | } |
998 | } | |
393d2cc3 CM |
999 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
1000 | ||
1001 | /* | |
1002 | * Remove the user from the command receiver's table. First | |
1003 | * we build a list of everything (not using the standard link, | |
1004 | * since other things may be using it till we do | |
1005 | * synchronize_rcu()) then free everything in that list. | |
1006 | */ | |
d6dfd131 | 1007 | mutex_lock(&intf->cmd_rcvrs_mutex); |
066bb8d0 | 1008 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
1da177e4 | 1009 | if (rcvr->user == user) { |
393d2cc3 CM |
1010 | list_del_rcu(&rcvr->link); |
1011 | rcvr->next = rcvrs; | |
1012 | rcvrs = rcvr; | |
1da177e4 LT |
1013 | } |
1014 | } | |
d6dfd131 | 1015 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
1016 | synchronize_rcu(); |
1017 | while (rcvrs) { | |
1018 | rcvr = rcvrs; | |
1019 | rcvrs = rcvr->next; | |
1020 | kfree(rcvr); | |
1021 | } | |
1da177e4 | 1022 | |
b2c03941 CM |
1023 | mutex_lock(&ipmi_interfaces_mutex); |
1024 | if (intf->handlers) { | |
1025 | module_put(intf->handlers->owner); | |
1026 | if (intf->handlers->dec_usecount) | |
1027 | intf->handlers->dec_usecount(intf->send_info); | |
1028 | } | |
1029 | mutex_unlock(&ipmi_interfaces_mutex); | |
1da177e4 | 1030 | |
393d2cc3 | 1031 | kref_put(&intf->refcount, intf_free); |
1da177e4 | 1032 | |
393d2cc3 | 1033 | kref_put(&user->refcount, free_user); |
1da177e4 | 1034 | |
8a3628d5 | 1035 | return 0; |
1da177e4 | 1036 | } |
c70d7499 | 1037 | EXPORT_SYMBOL(ipmi_destroy_user); |
1da177e4 LT |
1038 | |
1039 | void ipmi_get_version(ipmi_user_t user, | |
1040 | unsigned char *major, | |
1041 | unsigned char *minor) | |
1042 | { | |
b2c03941 CM |
1043 | *major = user->intf->ipmi_version_major; |
1044 | *minor = user->intf->ipmi_version_minor; | |
1da177e4 | 1045 | } |
c70d7499 | 1046 | EXPORT_SYMBOL(ipmi_get_version); |
1da177e4 | 1047 | |
c14979b9 CM |
1048 | int ipmi_set_my_address(ipmi_user_t user, |
1049 | unsigned int channel, | |
1050 | unsigned char address) | |
1da177e4 | 1051 | { |
c14979b9 CM |
1052 | if (channel >= IPMI_MAX_CHANNELS) |
1053 | return -EINVAL; | |
1054 | user->intf->channels[channel].address = address; | |
1055 | return 0; | |
1da177e4 | 1056 | } |
c70d7499 | 1057 | EXPORT_SYMBOL(ipmi_set_my_address); |
1da177e4 | 1058 | |
c14979b9 CM |
1059 | int ipmi_get_my_address(ipmi_user_t user, |
1060 | unsigned int channel, | |
1061 | unsigned char *address) | |
1da177e4 | 1062 | { |
c14979b9 CM |
1063 | if (channel >= IPMI_MAX_CHANNELS) |
1064 | return -EINVAL; | |
1065 | *address = user->intf->channels[channel].address; | |
1066 | return 0; | |
1da177e4 | 1067 | } |
c70d7499 | 1068 | EXPORT_SYMBOL(ipmi_get_my_address); |
1da177e4 | 1069 | |
c14979b9 CM |
1070 | int ipmi_set_my_LUN(ipmi_user_t user, |
1071 | unsigned int channel, | |
1072 | unsigned char LUN) | |
1da177e4 | 1073 | { |
c14979b9 CM |
1074 | if (channel >= IPMI_MAX_CHANNELS) |
1075 | return -EINVAL; | |
1076 | user->intf->channels[channel].lun = LUN & 0x3; | |
1077 | return 0; | |
1da177e4 | 1078 | } |
c70d7499 | 1079 | EXPORT_SYMBOL(ipmi_set_my_LUN); |
1da177e4 | 1080 | |
c14979b9 CM |
1081 | int ipmi_get_my_LUN(ipmi_user_t user, |
1082 | unsigned int channel, | |
1083 | unsigned char *address) | |
1da177e4 | 1084 | { |
c14979b9 CM |
1085 | if (channel >= IPMI_MAX_CHANNELS) |
1086 | return -EINVAL; | |
1087 | *address = user->intf->channels[channel].lun; | |
1088 | return 0; | |
1da177e4 | 1089 | } |
c70d7499 | 1090 | EXPORT_SYMBOL(ipmi_get_my_LUN); |
1da177e4 | 1091 | |
b9675136 CM |
1092 | int ipmi_get_maintenance_mode(ipmi_user_t user) |
1093 | { | |
1094 | int mode; | |
1095 | unsigned long flags; | |
1096 | ||
1097 | spin_lock_irqsave(&user->intf->maintenance_mode_lock, flags); | |
1098 | mode = user->intf->maintenance_mode; | |
1099 | spin_unlock_irqrestore(&user->intf->maintenance_mode_lock, flags); | |
1100 | ||
1101 | return mode; | |
1102 | } | |
1103 | EXPORT_SYMBOL(ipmi_get_maintenance_mode); | |
1104 | ||
1105 | static void maintenance_mode_update(ipmi_smi_t intf) | |
1106 | { | |
1107 | if (intf->handlers->set_maintenance_mode) | |
1108 | intf->handlers->set_maintenance_mode( | |
1109 | intf->send_info, intf->maintenance_mode_enable); | |
1110 | } | |
1111 | ||
1112 | int ipmi_set_maintenance_mode(ipmi_user_t user, int mode) | |
1113 | { | |
1114 | int rv = 0; | |
1115 | unsigned long flags; | |
1116 | ipmi_smi_t intf = user->intf; | |
1117 | ||
1118 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); | |
1119 | if (intf->maintenance_mode != mode) { | |
1120 | switch (mode) { | |
1121 | case IPMI_MAINTENANCE_MODE_AUTO: | |
1122 | intf->maintenance_mode = mode; | |
1123 | intf->maintenance_mode_enable | |
1124 | = (intf->auto_maintenance_timeout > 0); | |
1125 | break; | |
1126 | ||
1127 | case IPMI_MAINTENANCE_MODE_OFF: | |
1128 | intf->maintenance_mode = mode; | |
1129 | intf->maintenance_mode_enable = 0; | |
1130 | break; | |
1131 | ||
1132 | case IPMI_MAINTENANCE_MODE_ON: | |
1133 | intf->maintenance_mode = mode; | |
1134 | intf->maintenance_mode_enable = 1; | |
1135 | break; | |
1136 | ||
1137 | default: | |
1138 | rv = -EINVAL; | |
1139 | goto out_unlock; | |
1140 | } | |
1141 | ||
1142 | maintenance_mode_update(intf); | |
1143 | } | |
1144 | out_unlock: | |
1145 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, flags); | |
1146 | ||
1147 | return rv; | |
1148 | } | |
1149 | EXPORT_SYMBOL(ipmi_set_maintenance_mode); | |
1150 | ||
1da177e4 LT |
1151 | int ipmi_set_gets_events(ipmi_user_t user, int val) |
1152 | { | |
393d2cc3 CM |
1153 | unsigned long flags; |
1154 | ipmi_smi_t intf = user->intf; | |
1155 | struct ipmi_recv_msg *msg, *msg2; | |
1156 | struct list_head msgs; | |
1da177e4 | 1157 | |
393d2cc3 CM |
1158 | INIT_LIST_HEAD(&msgs); |
1159 | ||
1160 | spin_lock_irqsave(&intf->events_lock, flags); | |
1da177e4 LT |
1161 | user->gets_events = val; |
1162 | ||
b2c03941 CM |
1163 | if (intf->delivering_events) |
1164 | /* | |
1165 | * Another thread is delivering events for this, so | |
1166 | * let it handle any new events. | |
1167 | */ | |
1168 | goto out; | |
1169 | ||
1170 | /* Deliver any queued events. */ | |
1171 | while (user->gets_events && !list_empty(&intf->waiting_events)) { | |
179e0917 AM |
1172 | list_for_each_entry_safe(msg, msg2, &intf->waiting_events, link) |
1173 | list_move_tail(&msg->link, &msgs); | |
4791c03d | 1174 | intf->waiting_events_count = 0; |
87ebd06f CM |
1175 | if (intf->event_msg_printed) { |
1176 | printk(KERN_WARNING PFX "Event queue no longer" | |
1177 | " full\n"); | |
1178 | intf->event_msg_printed = 0; | |
1179 | } | |
393d2cc3 | 1180 | |
b2c03941 CM |
1181 | intf->delivering_events = 1; |
1182 | spin_unlock_irqrestore(&intf->events_lock, flags); | |
1183 | ||
1184 | list_for_each_entry_safe(msg, msg2, &msgs, link) { | |
1185 | msg->user = user; | |
1186 | kref_get(&user->refcount); | |
1187 | deliver_response(msg); | |
1188 | } | |
1189 | ||
1190 | spin_lock_irqsave(&intf->events_lock, flags); | |
1191 | intf->delivering_events = 0; | |
393d2cc3 CM |
1192 | } |
1193 | ||
b2c03941 | 1194 | out: |
393d2cc3 | 1195 | spin_unlock_irqrestore(&intf->events_lock, flags); |
1da177e4 LT |
1196 | |
1197 | return 0; | |
1198 | } | |
c70d7499 | 1199 | EXPORT_SYMBOL(ipmi_set_gets_events); |
1da177e4 | 1200 | |
393d2cc3 CM |
1201 | static struct cmd_rcvr *find_cmd_rcvr(ipmi_smi_t intf, |
1202 | unsigned char netfn, | |
c69c3127 CM |
1203 | unsigned char cmd, |
1204 | unsigned char chan) | |
393d2cc3 CM |
1205 | { |
1206 | struct cmd_rcvr *rcvr; | |
1207 | ||
1208 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { | |
c69c3127 CM |
1209 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) |
1210 | && (rcvr->chans & (1 << chan))) | |
393d2cc3 CM |
1211 | return rcvr; |
1212 | } | |
1213 | return NULL; | |
1214 | } | |
1215 | ||
c69c3127 CM |
1216 | static int is_cmd_rcvr_exclusive(ipmi_smi_t intf, |
1217 | unsigned char netfn, | |
1218 | unsigned char cmd, | |
1219 | unsigned int chans) | |
1220 | { | |
1221 | struct cmd_rcvr *rcvr; | |
1222 | ||
1223 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { | |
1224 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) | |
1225 | && (rcvr->chans & chans)) | |
1226 | return 0; | |
1227 | } | |
1228 | return 1; | |
1229 | } | |
1230 | ||
1da177e4 LT |
1231 | int ipmi_register_for_cmd(ipmi_user_t user, |
1232 | unsigned char netfn, | |
c69c3127 CM |
1233 | unsigned char cmd, |
1234 | unsigned int chans) | |
1da177e4 | 1235 | { |
393d2cc3 CM |
1236 | ipmi_smi_t intf = user->intf; |
1237 | struct cmd_rcvr *rcvr; | |
393d2cc3 | 1238 | int rv = 0; |
1da177e4 LT |
1239 | |
1240 | ||
1241 | rcvr = kmalloc(sizeof(*rcvr), GFP_KERNEL); | |
8a3628d5 | 1242 | if (!rcvr) |
1da177e4 | 1243 | return -ENOMEM; |
393d2cc3 CM |
1244 | rcvr->cmd = cmd; |
1245 | rcvr->netfn = netfn; | |
c69c3127 | 1246 | rcvr->chans = chans; |
393d2cc3 | 1247 | rcvr->user = user; |
1da177e4 | 1248 | |
d6dfd131 | 1249 | mutex_lock(&intf->cmd_rcvrs_mutex); |
1da177e4 | 1250 | /* Make sure the command/netfn is not already registered. */ |
c69c3127 | 1251 | if (!is_cmd_rcvr_exclusive(intf, netfn, cmd, chans)) { |
393d2cc3 CM |
1252 | rv = -EBUSY; |
1253 | goto out_unlock; | |
1da177e4 | 1254 | } |
877197ef | 1255 | |
393d2cc3 | 1256 | list_add_rcu(&rcvr->link, &intf->cmd_rcvrs); |
1da177e4 | 1257 | |
393d2cc3 | 1258 | out_unlock: |
d6dfd131 | 1259 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
1da177e4 LT |
1260 | if (rv) |
1261 | kfree(rcvr); | |
1262 | ||
1263 | return rv; | |
1264 | } | |
c70d7499 | 1265 | EXPORT_SYMBOL(ipmi_register_for_cmd); |
1da177e4 LT |
1266 | |
1267 | int ipmi_unregister_for_cmd(ipmi_user_t user, | |
1268 | unsigned char netfn, | |
c69c3127 CM |
1269 | unsigned char cmd, |
1270 | unsigned int chans) | |
1da177e4 | 1271 | { |
393d2cc3 CM |
1272 | ipmi_smi_t intf = user->intf; |
1273 | struct cmd_rcvr *rcvr; | |
c69c3127 CM |
1274 | struct cmd_rcvr *rcvrs = NULL; |
1275 | int i, rv = -ENOENT; | |
1da177e4 | 1276 | |
d6dfd131 | 1277 | mutex_lock(&intf->cmd_rcvrs_mutex); |
c69c3127 CM |
1278 | for (i = 0; i < IPMI_NUM_CHANNELS; i++) { |
1279 | if (((1 << i) & chans) == 0) | |
1280 | continue; | |
1281 | rcvr = find_cmd_rcvr(intf, netfn, cmd, i); | |
1282 | if (rcvr == NULL) | |
1283 | continue; | |
1284 | if (rcvr->user == user) { | |
1285 | rv = 0; | |
1286 | rcvr->chans &= ~chans; | |
1287 | if (rcvr->chans == 0) { | |
1288 | list_del_rcu(&rcvr->link); | |
1289 | rcvr->next = rcvrs; | |
1290 | rcvrs = rcvr; | |
1291 | } | |
1292 | } | |
1293 | } | |
1294 | mutex_unlock(&intf->cmd_rcvrs_mutex); | |
1295 | synchronize_rcu(); | |
1296 | while (rcvrs) { | |
1297 | rcvr = rcvrs; | |
1298 | rcvrs = rcvr->next; | |
393d2cc3 | 1299 | kfree(rcvr); |
1da177e4 | 1300 | } |
c69c3127 | 1301 | return rv; |
1da177e4 | 1302 | } |
c70d7499 | 1303 | EXPORT_SYMBOL(ipmi_unregister_for_cmd); |
1da177e4 | 1304 | |
1da177e4 LT |
1305 | static unsigned char |
1306 | ipmb_checksum(unsigned char *data, int size) | |
1307 | { | |
1308 | unsigned char csum = 0; | |
c70d7499 | 1309 | |
1da177e4 LT |
1310 | for (; size > 0; size--, data++) |
1311 | csum += *data; | |
1312 | ||
1313 | return -csum; | |
1314 | } | |
1315 | ||
1316 | static inline void format_ipmb_msg(struct ipmi_smi_msg *smi_msg, | |
1317 | struct kernel_ipmi_msg *msg, | |
1318 | struct ipmi_ipmb_addr *ipmb_addr, | |
1319 | long msgid, | |
1320 | unsigned char ipmb_seq, | |
1321 | int broadcast, | |
1322 | unsigned char source_address, | |
1323 | unsigned char source_lun) | |
1324 | { | |
1325 | int i = broadcast; | |
1326 | ||
1327 | /* Format the IPMB header data. */ | |
1328 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1329 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1330 | smi_msg->data[2] = ipmb_addr->channel; | |
1331 | if (broadcast) | |
1332 | smi_msg->data[3] = 0; | |
1333 | smi_msg->data[i+3] = ipmb_addr->slave_addr; | |
1334 | smi_msg->data[i+4] = (msg->netfn << 2) | (ipmb_addr->lun & 0x3); | |
1335 | smi_msg->data[i+5] = ipmb_checksum(&(smi_msg->data[i+3]), 2); | |
1336 | smi_msg->data[i+6] = source_address; | |
1337 | smi_msg->data[i+7] = (ipmb_seq << 2) | source_lun; | |
1338 | smi_msg->data[i+8] = msg->cmd; | |
1339 | ||
1340 | /* Now tack on the data to the message. */ | |
1341 | if (msg->data_len > 0) | |
1342 | memcpy(&(smi_msg->data[i+9]), msg->data, | |
1343 | msg->data_len); | |
1344 | smi_msg->data_size = msg->data_len + 9; | |
1345 | ||
1346 | /* Now calculate the checksum and tack it on. */ | |
1347 | smi_msg->data[i+smi_msg->data_size] | |
1348 | = ipmb_checksum(&(smi_msg->data[i+6]), | |
1349 | smi_msg->data_size-6); | |
1350 | ||
c70d7499 CM |
1351 | /* |
1352 | * Add on the checksum size and the offset from the | |
1353 | * broadcast. | |
1354 | */ | |
1da177e4 LT |
1355 | smi_msg->data_size += 1 + i; |
1356 | ||
1357 | smi_msg->msgid = msgid; | |
1358 | } | |
1359 | ||
1360 | static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg, | |
1361 | struct kernel_ipmi_msg *msg, | |
1362 | struct ipmi_lan_addr *lan_addr, | |
1363 | long msgid, | |
1364 | unsigned char ipmb_seq, | |
1365 | unsigned char source_lun) | |
1366 | { | |
1367 | /* Format the IPMB header data. */ | |
1368 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1369 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1370 | smi_msg->data[2] = lan_addr->channel; | |
1371 | smi_msg->data[3] = lan_addr->session_handle; | |
1372 | smi_msg->data[4] = lan_addr->remote_SWID; | |
1373 | smi_msg->data[5] = (msg->netfn << 2) | (lan_addr->lun & 0x3); | |
1374 | smi_msg->data[6] = ipmb_checksum(&(smi_msg->data[4]), 2); | |
1375 | smi_msg->data[7] = lan_addr->local_SWID; | |
1376 | smi_msg->data[8] = (ipmb_seq << 2) | source_lun; | |
1377 | smi_msg->data[9] = msg->cmd; | |
1378 | ||
1379 | /* Now tack on the data to the message. */ | |
1380 | if (msg->data_len > 0) | |
1381 | memcpy(&(smi_msg->data[10]), msg->data, | |
1382 | msg->data_len); | |
1383 | smi_msg->data_size = msg->data_len + 10; | |
1384 | ||
1385 | /* Now calculate the checksum and tack it on. */ | |
1386 | smi_msg->data[smi_msg->data_size] | |
1387 | = ipmb_checksum(&(smi_msg->data[7]), | |
1388 | smi_msg->data_size-7); | |
1389 | ||
c70d7499 CM |
1390 | /* |
1391 | * Add on the checksum size and the offset from the | |
1392 | * broadcast. | |
1393 | */ | |
1da177e4 LT |
1394 | smi_msg->data_size += 1; |
1395 | ||
1396 | smi_msg->msgid = msgid; | |
1397 | } | |
1398 | ||
c70d7499 CM |
1399 | /* |
1400 | * Separate from ipmi_request so that the user does not have to be | |
1401 | * supplied in certain circumstances (mainly at panic time). If | |
1402 | * messages are supplied, they will be freed, even if an error | |
1403 | * occurs. | |
1404 | */ | |
393d2cc3 CM |
1405 | static int i_ipmi_request(ipmi_user_t user, |
1406 | ipmi_smi_t intf, | |
1407 | struct ipmi_addr *addr, | |
1408 | long msgid, | |
1409 | struct kernel_ipmi_msg *msg, | |
1410 | void *user_msg_data, | |
1411 | void *supplied_smi, | |
1412 | struct ipmi_recv_msg *supplied_recv, | |
1413 | int priority, | |
1414 | unsigned char source_address, | |
1415 | unsigned char source_lun, | |
1416 | int retries, | |
1417 | unsigned int retry_time_ms) | |
1da177e4 | 1418 | { |
b2c03941 CM |
1419 | int rv = 0; |
1420 | struct ipmi_smi_msg *smi_msg; | |
1421 | struct ipmi_recv_msg *recv_msg; | |
1422 | unsigned long flags; | |
1423 | struct ipmi_smi_handlers *handlers; | |
1da177e4 LT |
1424 | |
1425 | ||
c70d7499 | 1426 | if (supplied_recv) |
1da177e4 | 1427 | recv_msg = supplied_recv; |
c70d7499 | 1428 | else { |
1da177e4 | 1429 | recv_msg = ipmi_alloc_recv_msg(); |
c70d7499 | 1430 | if (recv_msg == NULL) |
1da177e4 | 1431 | return -ENOMEM; |
1da177e4 LT |
1432 | } |
1433 | recv_msg->user_msg_data = user_msg_data; | |
1434 | ||
c70d7499 | 1435 | if (supplied_smi) |
1da177e4 | 1436 | smi_msg = (struct ipmi_smi_msg *) supplied_smi; |
c70d7499 | 1437 | else { |
1da177e4 LT |
1438 | smi_msg = ipmi_alloc_smi_msg(); |
1439 | if (smi_msg == NULL) { | |
1440 | ipmi_free_recv_msg(recv_msg); | |
1441 | return -ENOMEM; | |
1442 | } | |
1443 | } | |
1444 | ||
b2c03941 CM |
1445 | rcu_read_lock(); |
1446 | handlers = intf->handlers; | |
1447 | if (!handlers) { | |
1448 | rv = -ENODEV; | |
1449 | goto out_err; | |
1450 | } | |
1451 | ||
1da177e4 | 1452 | recv_msg->user = user; |
393d2cc3 CM |
1453 | if (user) |
1454 | kref_get(&user->refcount); | |
1da177e4 | 1455 | recv_msg->msgid = msgid; |
c70d7499 CM |
1456 | /* |
1457 | * Store the message to send in the receive message so timeout | |
1458 | * responses can get the proper response data. | |
1459 | */ | |
1da177e4 LT |
1460 | recv_msg->msg = *msg; |
1461 | ||
1462 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
1463 | struct ipmi_system_interface_addr *smi_addr; | |
1464 | ||
1465 | if (msg->netfn & 1) { | |
1466 | /* Responses are not allowed to the SMI. */ | |
1467 | rv = -EINVAL; | |
1468 | goto out_err; | |
1469 | } | |
1470 | ||
1471 | smi_addr = (struct ipmi_system_interface_addr *) addr; | |
1472 | if (smi_addr->lun > 3) { | |
b2655f26 | 1473 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1474 | rv = -EINVAL; |
1475 | goto out_err; | |
1476 | } | |
1477 | ||
1478 | memcpy(&recv_msg->addr, smi_addr, sizeof(*smi_addr)); | |
1479 | ||
1480 | if ((msg->netfn == IPMI_NETFN_APP_REQUEST) | |
1481 | && ((msg->cmd == IPMI_SEND_MSG_CMD) | |
1482 | || (msg->cmd == IPMI_GET_MSG_CMD) | |
c70d7499 CM |
1483 | || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD))) { |
1484 | /* | |
1485 | * We don't let the user do these, since we manage | |
1486 | * the sequence numbers. | |
1487 | */ | |
b2655f26 | 1488 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1489 | rv = -EINVAL; |
1490 | goto out_err; | |
1491 | } | |
1492 | ||
b9675136 CM |
1493 | if (((msg->netfn == IPMI_NETFN_APP_REQUEST) |
1494 | && ((msg->cmd == IPMI_COLD_RESET_CMD) | |
1495 | || (msg->cmd == IPMI_WARM_RESET_CMD))) | |
c70d7499 | 1496 | || (msg->netfn == IPMI_NETFN_FIRMWARE_REQUEST)) { |
b9675136 CM |
1497 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); |
1498 | intf->auto_maintenance_timeout | |
1499 | = IPMI_MAINTENANCE_MODE_TIMEOUT; | |
1500 | if (!intf->maintenance_mode | |
c70d7499 | 1501 | && !intf->maintenance_mode_enable) { |
b9675136 CM |
1502 | intf->maintenance_mode_enable = 1; |
1503 | maintenance_mode_update(intf); | |
1504 | } | |
1505 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, | |
1506 | flags); | |
1507 | } | |
1508 | ||
1da177e4 | 1509 | if ((msg->data_len + 2) > IPMI_MAX_MSG_LENGTH) { |
b2655f26 | 1510 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1511 | rv = -EMSGSIZE; |
1512 | goto out_err; | |
1513 | } | |
1514 | ||
1515 | smi_msg->data[0] = (msg->netfn << 2) | (smi_addr->lun & 0x3); | |
1516 | smi_msg->data[1] = msg->cmd; | |
1517 | smi_msg->msgid = msgid; | |
1518 | smi_msg->user_data = recv_msg; | |
1519 | if (msg->data_len > 0) | |
1520 | memcpy(&(smi_msg->data[2]), msg->data, msg->data_len); | |
1521 | smi_msg->data_size = msg->data_len + 2; | |
b2655f26 | 1522 | ipmi_inc_stat(intf, sent_local_commands); |
25176ed6 | 1523 | } else if (is_ipmb_addr(addr) || is_ipmb_bcast_addr(addr)) { |
1da177e4 LT |
1524 | struct ipmi_ipmb_addr *ipmb_addr; |
1525 | unsigned char ipmb_seq; | |
1526 | long seqid; | |
1527 | int broadcast = 0; | |
1528 | ||
9c101fd4 | 1529 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
b2655f26 | 1530 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1531 | rv = -EINVAL; |
1532 | goto out_err; | |
1533 | } | |
1534 | ||
1535 | if (intf->channels[addr->channel].medium | |
c70d7499 | 1536 | != IPMI_CHANNEL_MEDIUM_IPMB) { |
b2655f26 | 1537 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1538 | rv = -EINVAL; |
1539 | goto out_err; | |
1540 | } | |
1541 | ||
1542 | if (retries < 0) { | |
1543 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) | |
1544 | retries = 0; /* Don't retry broadcasts. */ | |
1545 | else | |
1546 | retries = 4; | |
1547 | } | |
1548 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) { | |
c70d7499 CM |
1549 | /* |
1550 | * Broadcasts add a zero at the beginning of the | |
1551 | * message, but otherwise is the same as an IPMB | |
1552 | * address. | |
1553 | */ | |
1da177e4 LT |
1554 | addr->addr_type = IPMI_IPMB_ADDR_TYPE; |
1555 | broadcast = 1; | |
1556 | } | |
1557 | ||
1558 | ||
1559 | /* Default to 1 second retries. */ | |
1560 | if (retry_time_ms == 0) | |
1561 | retry_time_ms = 1000; | |
1562 | ||
c70d7499 CM |
1563 | /* |
1564 | * 9 for the header and 1 for the checksum, plus | |
1565 | * possibly one for the broadcast. | |
1566 | */ | |
1da177e4 | 1567 | if ((msg->data_len + 10 + broadcast) > IPMI_MAX_MSG_LENGTH) { |
b2655f26 | 1568 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1569 | rv = -EMSGSIZE; |
1570 | goto out_err; | |
1571 | } | |
1572 | ||
1573 | ipmb_addr = (struct ipmi_ipmb_addr *) addr; | |
1574 | if (ipmb_addr->lun > 3) { | |
b2655f26 | 1575 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1576 | rv = -EINVAL; |
1577 | goto out_err; | |
1578 | } | |
1579 | ||
1580 | memcpy(&recv_msg->addr, ipmb_addr, sizeof(*ipmb_addr)); | |
1581 | ||
1582 | if (recv_msg->msg.netfn & 0x1) { | |
c70d7499 CM |
1583 | /* |
1584 | * It's a response, so use the user's sequence | |
1585 | * from msgid. | |
1586 | */ | |
b2655f26 | 1587 | ipmi_inc_stat(intf, sent_ipmb_responses); |
1da177e4 LT |
1588 | format_ipmb_msg(smi_msg, msg, ipmb_addr, msgid, |
1589 | msgid, broadcast, | |
1590 | source_address, source_lun); | |
1591 | ||
c70d7499 CM |
1592 | /* |
1593 | * Save the receive message so we can use it | |
1594 | * to deliver the response. | |
1595 | */ | |
1da177e4 LT |
1596 | smi_msg->user_data = recv_msg; |
1597 | } else { | |
1598 | /* It's a command, so get a sequence for it. */ | |
1599 | ||
1600 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1601 | ||
c70d7499 CM |
1602 | /* |
1603 | * Create a sequence number with a 1 second | |
1604 | * timeout and 4 retries. | |
1605 | */ | |
1da177e4 LT |
1606 | rv = intf_next_seq(intf, |
1607 | recv_msg, | |
1608 | retry_time_ms, | |
1609 | retries, | |
1610 | broadcast, | |
1611 | &ipmb_seq, | |
1612 | &seqid); | |
1613 | if (rv) { | |
c70d7499 CM |
1614 | /* |
1615 | * We have used up all the sequence numbers, | |
1616 | * probably, so abort. | |
1617 | */ | |
1da177e4 LT |
1618 | spin_unlock_irqrestore(&(intf->seq_lock), |
1619 | flags); | |
1620 | goto out_err; | |
1621 | } | |
1622 | ||
25176ed6 CM |
1623 | ipmi_inc_stat(intf, sent_ipmb_commands); |
1624 | ||
c70d7499 CM |
1625 | /* |
1626 | * Store the sequence number in the message, | |
1627 | * so that when the send message response | |
1628 | * comes back we can start the timer. | |
1629 | */ | |
1da177e4 LT |
1630 | format_ipmb_msg(smi_msg, msg, ipmb_addr, |
1631 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1632 | ipmb_seq, broadcast, | |
1633 | source_address, source_lun); | |
1634 | ||
c70d7499 CM |
1635 | /* |
1636 | * Copy the message into the recv message data, so we | |
1637 | * can retransmit it later if necessary. | |
1638 | */ | |
1da177e4 LT |
1639 | memcpy(recv_msg->msg_data, smi_msg->data, |
1640 | smi_msg->data_size); | |
1641 | recv_msg->msg.data = recv_msg->msg_data; | |
1642 | recv_msg->msg.data_len = smi_msg->data_size; | |
1643 | ||
c70d7499 CM |
1644 | /* |
1645 | * We don't unlock until here, because we need | |
1646 | * to copy the completed message into the | |
1647 | * recv_msg before we release the lock. | |
1648 | * Otherwise, race conditions may bite us. I | |
1649 | * know that's pretty paranoid, but I prefer | |
1650 | * to be correct. | |
1651 | */ | |
1da177e4 LT |
1652 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
1653 | } | |
25176ed6 | 1654 | } else if (is_lan_addr(addr)) { |
1da177e4 LT |
1655 | struct ipmi_lan_addr *lan_addr; |
1656 | unsigned char ipmb_seq; | |
1657 | long seqid; | |
1658 | ||
12fc1d7b | 1659 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
b2655f26 | 1660 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1661 | rv = -EINVAL; |
1662 | goto out_err; | |
1663 | } | |
1664 | ||
1665 | if ((intf->channels[addr->channel].medium | |
c70d7499 | 1666 | != IPMI_CHANNEL_MEDIUM_8023LAN) |
1da177e4 | 1667 | && (intf->channels[addr->channel].medium |
c70d7499 | 1668 | != IPMI_CHANNEL_MEDIUM_ASYNC)) { |
b2655f26 | 1669 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1670 | rv = -EINVAL; |
1671 | goto out_err; | |
1672 | } | |
1673 | ||
1674 | retries = 4; | |
1675 | ||
1676 | /* Default to 1 second retries. */ | |
1677 | if (retry_time_ms == 0) | |
1678 | retry_time_ms = 1000; | |
1679 | ||
1680 | /* 11 for the header and 1 for the checksum. */ | |
1681 | if ((msg->data_len + 12) > IPMI_MAX_MSG_LENGTH) { | |
b2655f26 | 1682 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1683 | rv = -EMSGSIZE; |
1684 | goto out_err; | |
1685 | } | |
1686 | ||
1687 | lan_addr = (struct ipmi_lan_addr *) addr; | |
1688 | if (lan_addr->lun > 3) { | |
b2655f26 | 1689 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1690 | rv = -EINVAL; |
1691 | goto out_err; | |
1692 | } | |
1693 | ||
1694 | memcpy(&recv_msg->addr, lan_addr, sizeof(*lan_addr)); | |
1695 | ||
1696 | if (recv_msg->msg.netfn & 0x1) { | |
c70d7499 CM |
1697 | /* |
1698 | * It's a response, so use the user's sequence | |
1699 | * from msgid. | |
1700 | */ | |
b2655f26 | 1701 | ipmi_inc_stat(intf, sent_lan_responses); |
1da177e4 LT |
1702 | format_lan_msg(smi_msg, msg, lan_addr, msgid, |
1703 | msgid, source_lun); | |
1704 | ||
c70d7499 CM |
1705 | /* |
1706 | * Save the receive message so we can use it | |
1707 | * to deliver the response. | |
1708 | */ | |
1da177e4 LT |
1709 | smi_msg->user_data = recv_msg; |
1710 | } else { | |
1711 | /* It's a command, so get a sequence for it. */ | |
1712 | ||
1713 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1714 | ||
c70d7499 CM |
1715 | /* |
1716 | * Create a sequence number with a 1 second | |
1717 | * timeout and 4 retries. | |
1718 | */ | |
1da177e4 LT |
1719 | rv = intf_next_seq(intf, |
1720 | recv_msg, | |
1721 | retry_time_ms, | |
1722 | retries, | |
1723 | 0, | |
1724 | &ipmb_seq, | |
1725 | &seqid); | |
1726 | if (rv) { | |
c70d7499 CM |
1727 | /* |
1728 | * We have used up all the sequence numbers, | |
1729 | * probably, so abort. | |
1730 | */ | |
1da177e4 LT |
1731 | spin_unlock_irqrestore(&(intf->seq_lock), |
1732 | flags); | |
1733 | goto out_err; | |
1734 | } | |
1735 | ||
25176ed6 CM |
1736 | ipmi_inc_stat(intf, sent_lan_commands); |
1737 | ||
c70d7499 CM |
1738 | /* |
1739 | * Store the sequence number in the message, | |
1740 | * so that when the send message response | |
1741 | * comes back we can start the timer. | |
1742 | */ | |
1da177e4 LT |
1743 | format_lan_msg(smi_msg, msg, lan_addr, |
1744 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1745 | ipmb_seq, source_lun); | |
1746 | ||
c70d7499 CM |
1747 | /* |
1748 | * Copy the message into the recv message data, so we | |
1749 | * can retransmit it later if necessary. | |
1750 | */ | |
1da177e4 LT |
1751 | memcpy(recv_msg->msg_data, smi_msg->data, |
1752 | smi_msg->data_size); | |
1753 | recv_msg->msg.data = recv_msg->msg_data; | |
1754 | recv_msg->msg.data_len = smi_msg->data_size; | |
1755 | ||
c70d7499 CM |
1756 | /* |
1757 | * We don't unlock until here, because we need | |
1758 | * to copy the completed message into the | |
1759 | * recv_msg before we release the lock. | |
1760 | * Otherwise, race conditions may bite us. I | |
1761 | * know that's pretty paranoid, but I prefer | |
1762 | * to be correct. | |
1763 | */ | |
1da177e4 LT |
1764 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
1765 | } | |
1766 | } else { | |
1767 | /* Unknown address type. */ | |
b2655f26 | 1768 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1769 | rv = -EINVAL; |
1770 | goto out_err; | |
1771 | } | |
1772 | ||
1773 | #ifdef DEBUG_MSGING | |
1774 | { | |
1775 | int m; | |
e8b33617 | 1776 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
1777 | printk(" %2.2x", smi_msg->data[m]); |
1778 | printk("\n"); | |
1779 | } | |
1780 | #endif | |
b2c03941 CM |
1781 | |
1782 | handlers->sender(intf->send_info, smi_msg, priority); | |
1783 | rcu_read_unlock(); | |
1da177e4 LT |
1784 | |
1785 | return 0; | |
1786 | ||
1787 | out_err: | |
b2c03941 | 1788 | rcu_read_unlock(); |
1da177e4 LT |
1789 | ipmi_free_smi_msg(smi_msg); |
1790 | ipmi_free_recv_msg(recv_msg); | |
1791 | return rv; | |
1792 | } | |
1793 | ||
c14979b9 CM |
1794 | static int check_addr(ipmi_smi_t intf, |
1795 | struct ipmi_addr *addr, | |
1796 | unsigned char *saddr, | |
1797 | unsigned char *lun) | |
1798 | { | |
1799 | if (addr->channel >= IPMI_MAX_CHANNELS) | |
1800 | return -EINVAL; | |
1801 | *lun = intf->channels[addr->channel].lun; | |
1802 | *saddr = intf->channels[addr->channel].address; | |
1803 | return 0; | |
1804 | } | |
1805 | ||
1da177e4 LT |
1806 | int ipmi_request_settime(ipmi_user_t user, |
1807 | struct ipmi_addr *addr, | |
1808 | long msgid, | |
1809 | struct kernel_ipmi_msg *msg, | |
1810 | void *user_msg_data, | |
1811 | int priority, | |
1812 | int retries, | |
1813 | unsigned int retry_time_ms) | |
1814 | { | |
c14979b9 CM |
1815 | unsigned char saddr, lun; |
1816 | int rv; | |
1817 | ||
8a3628d5 | 1818 | if (!user) |
56a55ec6 | 1819 | return -EINVAL; |
c14979b9 CM |
1820 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1821 | if (rv) | |
1822 | return rv; | |
1da177e4 LT |
1823 | return i_ipmi_request(user, |
1824 | user->intf, | |
1825 | addr, | |
1826 | msgid, | |
1827 | msg, | |
1828 | user_msg_data, | |
1829 | NULL, NULL, | |
1830 | priority, | |
c14979b9 CM |
1831 | saddr, |
1832 | lun, | |
1da177e4 LT |
1833 | retries, |
1834 | retry_time_ms); | |
1835 | } | |
c70d7499 | 1836 | EXPORT_SYMBOL(ipmi_request_settime); |
1da177e4 LT |
1837 | |
1838 | int ipmi_request_supply_msgs(ipmi_user_t user, | |
1839 | struct ipmi_addr *addr, | |
1840 | long msgid, | |
1841 | struct kernel_ipmi_msg *msg, | |
1842 | void *user_msg_data, | |
1843 | void *supplied_smi, | |
1844 | struct ipmi_recv_msg *supplied_recv, | |
1845 | int priority) | |
1846 | { | |
c14979b9 CM |
1847 | unsigned char saddr, lun; |
1848 | int rv; | |
1849 | ||
8a3628d5 | 1850 | if (!user) |
56a55ec6 | 1851 | return -EINVAL; |
c14979b9 CM |
1852 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1853 | if (rv) | |
1854 | return rv; | |
1da177e4 LT |
1855 | return i_ipmi_request(user, |
1856 | user->intf, | |
1857 | addr, | |
1858 | msgid, | |
1859 | msg, | |
1860 | user_msg_data, | |
1861 | supplied_smi, | |
1862 | supplied_recv, | |
1863 | priority, | |
c14979b9 CM |
1864 | saddr, |
1865 | lun, | |
1da177e4 LT |
1866 | -1, 0); |
1867 | } | |
c70d7499 | 1868 | EXPORT_SYMBOL(ipmi_request_supply_msgs); |
1da177e4 | 1869 | |
1aa16eea | 1870 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
1871 | static int ipmb_file_read_proc(char *page, char **start, off_t off, |
1872 | int count, int *eof, void *data) | |
1873 | { | |
1874 | char *out = (char *) page; | |
1875 | ipmi_smi_t intf = data; | |
c14979b9 | 1876 | int i; |
8a3628d5 | 1877 | int rv = 0; |
1da177e4 | 1878 | |
e8b33617 | 1879 | for (i = 0; i < IPMI_MAX_CHANNELS; i++) |
c14979b9 CM |
1880 | rv += sprintf(out+rv, "%x ", intf->channels[i].address); |
1881 | out[rv-1] = '\n'; /* Replace the final space with a newline */ | |
1882 | out[rv] = '\0'; | |
1883 | rv++; | |
1884 | return rv; | |
1da177e4 LT |
1885 | } |
1886 | ||
1887 | static int version_file_read_proc(char *page, char **start, off_t off, | |
1888 | int count, int *eof, void *data) | |
1889 | { | |
1890 | char *out = (char *) page; | |
1891 | ipmi_smi_t intf = data; | |
1892 | ||
b2655f26 | 1893 | return sprintf(out, "%u.%u\n", |
50c812b2 CM |
1894 | ipmi_version_major(&intf->bmc->id), |
1895 | ipmi_version_minor(&intf->bmc->id)); | |
1da177e4 LT |
1896 | } |
1897 | ||
1898 | static int stat_file_read_proc(char *page, char **start, off_t off, | |
1899 | int count, int *eof, void *data) | |
1900 | { | |
1901 | char *out = (char *) page; | |
1902 | ipmi_smi_t intf = data; | |
1903 | ||
b2655f26 KB |
1904 | out += sprintf(out, "sent_invalid_commands: %u\n", |
1905 | ipmi_get_stat(intf, sent_invalid_commands)); | |
1906 | out += sprintf(out, "sent_local_commands: %u\n", | |
1907 | ipmi_get_stat(intf, sent_local_commands)); | |
1908 | out += sprintf(out, "handled_local_responses: %u\n", | |
1909 | ipmi_get_stat(intf, handled_local_responses)); | |
1910 | out += sprintf(out, "unhandled_local_responses: %u\n", | |
1911 | ipmi_get_stat(intf, unhandled_local_responses)); | |
1912 | out += sprintf(out, "sent_ipmb_commands: %u\n", | |
1913 | ipmi_get_stat(intf, sent_ipmb_commands)); | |
1914 | out += sprintf(out, "sent_ipmb_command_errs: %u\n", | |
1915 | ipmi_get_stat(intf, sent_ipmb_command_errs)); | |
1916 | out += sprintf(out, "retransmitted_ipmb_commands: %u\n", | |
1917 | ipmi_get_stat(intf, retransmitted_ipmb_commands)); | |
1918 | out += sprintf(out, "timed_out_ipmb_commands: %u\n", | |
1919 | ipmi_get_stat(intf, timed_out_ipmb_commands)); | |
1920 | out += sprintf(out, "timed_out_ipmb_broadcasts: %u\n", | |
1921 | ipmi_get_stat(intf, timed_out_ipmb_broadcasts)); | |
1922 | out += sprintf(out, "sent_ipmb_responses: %u\n", | |
1923 | ipmi_get_stat(intf, sent_ipmb_responses)); | |
1924 | out += sprintf(out, "handled_ipmb_responses: %u\n", | |
1925 | ipmi_get_stat(intf, handled_ipmb_responses)); | |
1926 | out += sprintf(out, "invalid_ipmb_responses: %u\n", | |
1927 | ipmi_get_stat(intf, invalid_ipmb_responses)); | |
1928 | out += sprintf(out, "unhandled_ipmb_responses: %u\n", | |
1929 | ipmi_get_stat(intf, unhandled_ipmb_responses)); | |
1930 | out += sprintf(out, "sent_lan_commands: %u\n", | |
1931 | ipmi_get_stat(intf, sent_lan_commands)); | |
1932 | out += sprintf(out, "sent_lan_command_errs: %u\n", | |
1933 | ipmi_get_stat(intf, sent_lan_command_errs)); | |
1934 | out += sprintf(out, "retransmitted_lan_commands: %u\n", | |
1935 | ipmi_get_stat(intf, retransmitted_lan_commands)); | |
1936 | out += sprintf(out, "timed_out_lan_commands: %u\n", | |
1937 | ipmi_get_stat(intf, timed_out_lan_commands)); | |
1938 | out += sprintf(out, "sent_lan_responses: %u\n", | |
1939 | ipmi_get_stat(intf, sent_lan_responses)); | |
1940 | out += sprintf(out, "handled_lan_responses: %u\n", | |
1941 | ipmi_get_stat(intf, handled_lan_responses)); | |
1942 | out += sprintf(out, "invalid_lan_responses: %u\n", | |
1943 | ipmi_get_stat(intf, invalid_lan_responses)); | |
1944 | out += sprintf(out, "unhandled_lan_responses: %u\n", | |
1945 | ipmi_get_stat(intf, unhandled_lan_responses)); | |
1946 | out += sprintf(out, "handled_commands: %u\n", | |
1947 | ipmi_get_stat(intf, handled_commands)); | |
1948 | out += sprintf(out, "invalid_commands: %u\n", | |
1949 | ipmi_get_stat(intf, invalid_commands)); | |
1950 | out += sprintf(out, "unhandled_commands: %u\n", | |
1951 | ipmi_get_stat(intf, unhandled_commands)); | |
1952 | out += sprintf(out, "invalid_events: %u\n", | |
1953 | ipmi_get_stat(intf, invalid_events)); | |
1954 | out += sprintf(out, "events: %u\n", | |
1955 | ipmi_get_stat(intf, events)); | |
25176ed6 CM |
1956 | out += sprintf(out, "failed rexmit LAN msgs: %u\n", |
1957 | ipmi_get_stat(intf, dropped_rexmit_lan_commands)); | |
1958 | out += sprintf(out, "failed rexmit IPMB msgs: %u\n", | |
1959 | ipmi_get_stat(intf, dropped_rexmit_ipmb_commands)); | |
1da177e4 LT |
1960 | |
1961 | return (out - ((char *) page)); | |
1962 | } | |
1aa16eea | 1963 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
1964 | |
1965 | int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, | |
fa68be0d | 1966 | read_proc_t *read_proc, |
99b76233 | 1967 | void *data) |
1da177e4 | 1968 | { |
1da177e4 | 1969 | int rv = 0; |
3b625943 CM |
1970 | #ifdef CONFIG_PROC_FS |
1971 | struct proc_dir_entry *file; | |
1da177e4 LT |
1972 | struct ipmi_proc_entry *entry; |
1973 | ||
1974 | /* Create a list element. */ | |
1975 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); | |
1976 | if (!entry) | |
1977 | return -ENOMEM; | |
1978 | entry->name = kmalloc(strlen(name)+1, GFP_KERNEL); | |
1979 | if (!entry->name) { | |
1980 | kfree(entry); | |
1981 | return -ENOMEM; | |
1982 | } | |
1983 | strcpy(entry->name, name); | |
1984 | ||
1985 | file = create_proc_entry(name, 0, smi->proc_dir); | |
1986 | if (!file) { | |
1987 | kfree(entry->name); | |
1988 | kfree(entry); | |
1989 | rv = -ENOMEM; | |
1990 | } else { | |
1da177e4 LT |
1991 | file->data = data; |
1992 | file->read_proc = read_proc; | |
1da177e4 | 1993 | |
ac019151 | 1994 | mutex_lock(&smi->proc_entry_lock); |
1da177e4 LT |
1995 | /* Stick it on the list. */ |
1996 | entry->next = smi->proc_entries; | |
1997 | smi->proc_entries = entry; | |
ac019151 | 1998 | mutex_unlock(&smi->proc_entry_lock); |
1da177e4 | 1999 | } |
3b625943 | 2000 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2001 | |
2002 | return rv; | |
2003 | } | |
c70d7499 | 2004 | EXPORT_SYMBOL(ipmi_smi_add_proc_entry); |
1da177e4 LT |
2005 | |
2006 | static int add_proc_entries(ipmi_smi_t smi, int num) | |
2007 | { | |
2008 | int rv = 0; | |
2009 | ||
3b625943 | 2010 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
2011 | sprintf(smi->proc_dir_name, "%d", num); |
2012 | smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); | |
2013 | if (!smi->proc_dir) | |
2014 | rv = -ENOMEM; | |
1da177e4 LT |
2015 | |
2016 | if (rv == 0) | |
2017 | rv = ipmi_smi_add_proc_entry(smi, "stats", | |
fa68be0d | 2018 | stat_file_read_proc, |
99b76233 | 2019 | smi); |
1da177e4 LT |
2020 | |
2021 | if (rv == 0) | |
2022 | rv = ipmi_smi_add_proc_entry(smi, "ipmb", | |
fa68be0d | 2023 | ipmb_file_read_proc, |
99b76233 | 2024 | smi); |
1da177e4 LT |
2025 | |
2026 | if (rv == 0) | |
2027 | rv = ipmi_smi_add_proc_entry(smi, "version", | |
fa68be0d | 2028 | version_file_read_proc, |
99b76233 | 2029 | smi); |
3b625943 | 2030 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2031 | |
2032 | return rv; | |
2033 | } | |
2034 | ||
2035 | static void remove_proc_entries(ipmi_smi_t smi) | |
2036 | { | |
3b625943 | 2037 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
2038 | struct ipmi_proc_entry *entry; |
2039 | ||
ac019151 | 2040 | mutex_lock(&smi->proc_entry_lock); |
1da177e4 LT |
2041 | while (smi->proc_entries) { |
2042 | entry = smi->proc_entries; | |
2043 | smi->proc_entries = entry->next; | |
2044 | ||
2045 | remove_proc_entry(entry->name, smi->proc_dir); | |
2046 | kfree(entry->name); | |
2047 | kfree(entry); | |
2048 | } | |
ac019151 | 2049 | mutex_unlock(&smi->proc_entry_lock); |
1da177e4 | 2050 | remove_proc_entry(smi->proc_dir_name, proc_ipmi_root); |
3b625943 | 2051 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2052 | } |
2053 | ||
50c812b2 CM |
2054 | static int __find_bmc_guid(struct device *dev, void *data) |
2055 | { | |
2056 | unsigned char *id = data; | |
2057 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2058 | return memcmp(bmc->guid, id, 16) == 0; | |
2059 | } | |
2060 | ||
2061 | static struct bmc_device *ipmi_find_bmc_guid(struct device_driver *drv, | |
2062 | unsigned char *guid) | |
2063 | { | |
2064 | struct device *dev; | |
2065 | ||
2066 | dev = driver_find_device(drv, NULL, guid, __find_bmc_guid); | |
2067 | if (dev) | |
2068 | return dev_get_drvdata(dev); | |
2069 | else | |
2070 | return NULL; | |
2071 | } | |
2072 | ||
2073 | struct prod_dev_id { | |
2074 | unsigned int product_id; | |
2075 | unsigned char device_id; | |
2076 | }; | |
2077 | ||
2078 | static int __find_bmc_prod_dev_id(struct device *dev, void *data) | |
2079 | { | |
2080 | struct prod_dev_id *id = data; | |
2081 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2082 | ||
2083 | return (bmc->id.product_id == id->product_id | |
50c812b2 CM |
2084 | && bmc->id.device_id == id->device_id); |
2085 | } | |
2086 | ||
2087 | static struct bmc_device *ipmi_find_bmc_prod_dev_id( | |
2088 | struct device_driver *drv, | |
f0b55da0 | 2089 | unsigned int product_id, unsigned char device_id) |
50c812b2 CM |
2090 | { |
2091 | struct prod_dev_id id = { | |
2092 | .product_id = product_id, | |
2093 | .device_id = device_id, | |
2094 | }; | |
2095 | struct device *dev; | |
2096 | ||
2097 | dev = driver_find_device(drv, NULL, &id, __find_bmc_prod_dev_id); | |
2098 | if (dev) | |
2099 | return dev_get_drvdata(dev); | |
2100 | else | |
2101 | return NULL; | |
2102 | } | |
2103 | ||
2104 | static ssize_t device_id_show(struct device *dev, | |
2105 | struct device_attribute *attr, | |
2106 | char *buf) | |
2107 | { | |
2108 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2109 | ||
2110 | return snprintf(buf, 10, "%u\n", bmc->id.device_id); | |
2111 | } | |
2112 | ||
2113 | static ssize_t provides_dev_sdrs_show(struct device *dev, | |
2114 | struct device_attribute *attr, | |
2115 | char *buf) | |
2116 | { | |
2117 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2118 | ||
2119 | return snprintf(buf, 10, "%u\n", | |
7947d2cc | 2120 | (bmc->id.device_revision & 0x80) >> 7); |
50c812b2 CM |
2121 | } |
2122 | ||
2123 | static ssize_t revision_show(struct device *dev, struct device_attribute *attr, | |
2124 | char *buf) | |
2125 | { | |
2126 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2127 | ||
2128 | return snprintf(buf, 20, "%u\n", | |
7947d2cc | 2129 | bmc->id.device_revision & 0x0F); |
50c812b2 CM |
2130 | } |
2131 | ||
2132 | static ssize_t firmware_rev_show(struct device *dev, | |
2133 | struct device_attribute *attr, | |
2134 | char *buf) | |
2135 | { | |
2136 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2137 | ||
2138 | return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1, | |
2139 | bmc->id.firmware_revision_2); | |
2140 | } | |
2141 | ||
2142 | static ssize_t ipmi_version_show(struct device *dev, | |
2143 | struct device_attribute *attr, | |
2144 | char *buf) | |
2145 | { | |
2146 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2147 | ||
2148 | return snprintf(buf, 20, "%u.%u\n", | |
2149 | ipmi_version_major(&bmc->id), | |
2150 | ipmi_version_minor(&bmc->id)); | |
2151 | } | |
2152 | ||
2153 | static ssize_t add_dev_support_show(struct device *dev, | |
2154 | struct device_attribute *attr, | |
2155 | char *buf) | |
2156 | { | |
2157 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2158 | ||
2159 | return snprintf(buf, 10, "0x%02x\n", | |
2160 | bmc->id.additional_device_support); | |
2161 | } | |
2162 | ||
2163 | static ssize_t manufacturer_id_show(struct device *dev, | |
2164 | struct device_attribute *attr, | |
2165 | char *buf) | |
2166 | { | |
2167 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2168 | ||
2169 | return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id); | |
2170 | } | |
2171 | ||
2172 | static ssize_t product_id_show(struct device *dev, | |
2173 | struct device_attribute *attr, | |
2174 | char *buf) | |
2175 | { | |
2176 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2177 | ||
2178 | return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id); | |
2179 | } | |
2180 | ||
2181 | static ssize_t aux_firmware_rev_show(struct device *dev, | |
2182 | struct device_attribute *attr, | |
2183 | char *buf) | |
2184 | { | |
2185 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2186 | ||
2187 | return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n", | |
2188 | bmc->id.aux_firmware_revision[3], | |
2189 | bmc->id.aux_firmware_revision[2], | |
2190 | bmc->id.aux_firmware_revision[1], | |
2191 | bmc->id.aux_firmware_revision[0]); | |
2192 | } | |
2193 | ||
2194 | static ssize_t guid_show(struct device *dev, struct device_attribute *attr, | |
2195 | char *buf) | |
2196 | { | |
2197 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2198 | ||
2199 | return snprintf(buf, 100, "%Lx%Lx\n", | |
2200 | (long long) bmc->guid[0], | |
2201 | (long long) bmc->guid[8]); | |
2202 | } | |
2203 | ||
5e59393e | 2204 | static void remove_files(struct bmc_device *bmc) |
50c812b2 | 2205 | { |
f0b55da0 CM |
2206 | if (!bmc->dev) |
2207 | return; | |
2208 | ||
50c812b2 CM |
2209 | device_remove_file(&bmc->dev->dev, |
2210 | &bmc->device_id_attr); | |
2211 | device_remove_file(&bmc->dev->dev, | |
2212 | &bmc->provides_dev_sdrs_attr); | |
2213 | device_remove_file(&bmc->dev->dev, | |
2214 | &bmc->revision_attr); | |
2215 | device_remove_file(&bmc->dev->dev, | |
2216 | &bmc->firmware_rev_attr); | |
2217 | device_remove_file(&bmc->dev->dev, | |
2218 | &bmc->version_attr); | |
2219 | device_remove_file(&bmc->dev->dev, | |
2220 | &bmc->add_dev_support_attr); | |
2221 | device_remove_file(&bmc->dev->dev, | |
2222 | &bmc->manufacturer_id_attr); | |
2223 | device_remove_file(&bmc->dev->dev, | |
2224 | &bmc->product_id_attr); | |
5e59393e | 2225 | |
50c812b2 CM |
2226 | if (bmc->id.aux_firmware_revision_set) |
2227 | device_remove_file(&bmc->dev->dev, | |
2228 | &bmc->aux_firmware_rev_attr); | |
2229 | if (bmc->guid_set) | |
2230 | device_remove_file(&bmc->dev->dev, | |
2231 | &bmc->guid_attr); | |
5e59393e JG |
2232 | } |
2233 | ||
2234 | static void | |
2235 | cleanup_bmc_device(struct kref *ref) | |
2236 | { | |
2237 | struct bmc_device *bmc; | |
2238 | ||
2239 | bmc = container_of(ref, struct bmc_device, refcount); | |
2240 | ||
2241 | remove_files(bmc); | |
1d5636cc | 2242 | platform_device_unregister(bmc->dev); |
50c812b2 CM |
2243 | kfree(bmc); |
2244 | } | |
2245 | ||
2246 | static void ipmi_bmc_unregister(ipmi_smi_t intf) | |
2247 | { | |
2248 | struct bmc_device *bmc = intf->bmc; | |
2249 | ||
759643b8 CM |
2250 | if (intf->sysfs_name) { |
2251 | sysfs_remove_link(&intf->si_dev->kobj, intf->sysfs_name); | |
2252 | kfree(intf->sysfs_name); | |
2253 | intf->sysfs_name = NULL; | |
2254 | } | |
50c812b2 CM |
2255 | if (intf->my_dev_name) { |
2256 | sysfs_remove_link(&bmc->dev->dev.kobj, intf->my_dev_name); | |
2257 | kfree(intf->my_dev_name); | |
2258 | intf->my_dev_name = NULL; | |
2259 | } | |
2260 | ||
2261 | mutex_lock(&ipmidriver_mutex); | |
2262 | kref_put(&bmc->refcount, cleanup_bmc_device); | |
f0b55da0 | 2263 | intf->bmc = NULL; |
50c812b2 CM |
2264 | mutex_unlock(&ipmidriver_mutex); |
2265 | } | |
2266 | ||
5e59393e JG |
2267 | static int create_files(struct bmc_device *bmc) |
2268 | { | |
2269 | int err; | |
2270 | ||
f0b55da0 | 2271 | bmc->device_id_attr.attr.name = "device_id"; |
f0b55da0 CM |
2272 | bmc->device_id_attr.attr.mode = S_IRUGO; |
2273 | bmc->device_id_attr.show = device_id_show; | |
2274 | ||
2275 | bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs"; | |
f0b55da0 CM |
2276 | bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO; |
2277 | bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show; | |
2278 | ||
2279 | bmc->revision_attr.attr.name = "revision"; | |
f0b55da0 CM |
2280 | bmc->revision_attr.attr.mode = S_IRUGO; |
2281 | bmc->revision_attr.show = revision_show; | |
2282 | ||
2283 | bmc->firmware_rev_attr.attr.name = "firmware_revision"; | |
f0b55da0 CM |
2284 | bmc->firmware_rev_attr.attr.mode = S_IRUGO; |
2285 | bmc->firmware_rev_attr.show = firmware_rev_show; | |
2286 | ||
2287 | bmc->version_attr.attr.name = "ipmi_version"; | |
f0b55da0 CM |
2288 | bmc->version_attr.attr.mode = S_IRUGO; |
2289 | bmc->version_attr.show = ipmi_version_show; | |
2290 | ||
2291 | bmc->add_dev_support_attr.attr.name = "additional_device_support"; | |
f0b55da0 CM |
2292 | bmc->add_dev_support_attr.attr.mode = S_IRUGO; |
2293 | bmc->add_dev_support_attr.show = add_dev_support_show; | |
2294 | ||
2295 | bmc->manufacturer_id_attr.attr.name = "manufacturer_id"; | |
f0b55da0 CM |
2296 | bmc->manufacturer_id_attr.attr.mode = S_IRUGO; |
2297 | bmc->manufacturer_id_attr.show = manufacturer_id_show; | |
2298 | ||
2299 | bmc->product_id_attr.attr.name = "product_id"; | |
f0b55da0 CM |
2300 | bmc->product_id_attr.attr.mode = S_IRUGO; |
2301 | bmc->product_id_attr.show = product_id_show; | |
2302 | ||
2303 | bmc->guid_attr.attr.name = "guid"; | |
f0b55da0 CM |
2304 | bmc->guid_attr.attr.mode = S_IRUGO; |
2305 | bmc->guid_attr.show = guid_show; | |
2306 | ||
2307 | bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision"; | |
f0b55da0 CM |
2308 | bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO; |
2309 | bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show; | |
2310 | ||
5e59393e JG |
2311 | err = device_create_file(&bmc->dev->dev, |
2312 | &bmc->device_id_attr); | |
c70d7499 CM |
2313 | if (err) |
2314 | goto out; | |
5e59393e JG |
2315 | err = device_create_file(&bmc->dev->dev, |
2316 | &bmc->provides_dev_sdrs_attr); | |
c70d7499 CM |
2317 | if (err) |
2318 | goto out_devid; | |
5e59393e JG |
2319 | err = device_create_file(&bmc->dev->dev, |
2320 | &bmc->revision_attr); | |
c70d7499 CM |
2321 | if (err) |
2322 | goto out_sdrs; | |
5e59393e JG |
2323 | err = device_create_file(&bmc->dev->dev, |
2324 | &bmc->firmware_rev_attr); | |
c70d7499 CM |
2325 | if (err) |
2326 | goto out_rev; | |
5e59393e JG |
2327 | err = device_create_file(&bmc->dev->dev, |
2328 | &bmc->version_attr); | |
c70d7499 CM |
2329 | if (err) |
2330 | goto out_firm; | |
5e59393e JG |
2331 | err = device_create_file(&bmc->dev->dev, |
2332 | &bmc->add_dev_support_attr); | |
c70d7499 CM |
2333 | if (err) |
2334 | goto out_version; | |
5e59393e JG |
2335 | err = device_create_file(&bmc->dev->dev, |
2336 | &bmc->manufacturer_id_attr); | |
c70d7499 CM |
2337 | if (err) |
2338 | goto out_add_dev; | |
5e59393e JG |
2339 | err = device_create_file(&bmc->dev->dev, |
2340 | &bmc->product_id_attr); | |
c70d7499 CM |
2341 | if (err) |
2342 | goto out_manu; | |
5e59393e JG |
2343 | if (bmc->id.aux_firmware_revision_set) { |
2344 | err = device_create_file(&bmc->dev->dev, | |
2345 | &bmc->aux_firmware_rev_attr); | |
c70d7499 CM |
2346 | if (err) |
2347 | goto out_prod_id; | |
5e59393e JG |
2348 | } |
2349 | if (bmc->guid_set) { | |
2350 | err = device_create_file(&bmc->dev->dev, | |
2351 | &bmc->guid_attr); | |
c70d7499 CM |
2352 | if (err) |
2353 | goto out_aux_firm; | |
5e59393e JG |
2354 | } |
2355 | ||
2356 | return 0; | |
2357 | ||
2358 | out_aux_firm: | |
2359 | if (bmc->id.aux_firmware_revision_set) | |
2360 | device_remove_file(&bmc->dev->dev, | |
2361 | &bmc->aux_firmware_rev_attr); | |
2362 | out_prod_id: | |
2363 | device_remove_file(&bmc->dev->dev, | |
2364 | &bmc->product_id_attr); | |
2365 | out_manu: | |
2366 | device_remove_file(&bmc->dev->dev, | |
2367 | &bmc->manufacturer_id_attr); | |
2368 | out_add_dev: | |
2369 | device_remove_file(&bmc->dev->dev, | |
2370 | &bmc->add_dev_support_attr); | |
2371 | out_version: | |
2372 | device_remove_file(&bmc->dev->dev, | |
2373 | &bmc->version_attr); | |
2374 | out_firm: | |
2375 | device_remove_file(&bmc->dev->dev, | |
2376 | &bmc->firmware_rev_attr); | |
2377 | out_rev: | |
2378 | device_remove_file(&bmc->dev->dev, | |
2379 | &bmc->revision_attr); | |
2380 | out_sdrs: | |
2381 | device_remove_file(&bmc->dev->dev, | |
2382 | &bmc->provides_dev_sdrs_attr); | |
2383 | out_devid: | |
2384 | device_remove_file(&bmc->dev->dev, | |
2385 | &bmc->device_id_attr); | |
2386 | out: | |
2387 | return err; | |
2388 | } | |
2389 | ||
759643b8 CM |
2390 | static int ipmi_bmc_register(ipmi_smi_t intf, int ifnum, |
2391 | const char *sysfs_name) | |
50c812b2 CM |
2392 | { |
2393 | int rv; | |
2394 | struct bmc_device *bmc = intf->bmc; | |
2395 | struct bmc_device *old_bmc; | |
2396 | int size; | |
2397 | char dummy[1]; | |
2398 | ||
2399 | mutex_lock(&ipmidriver_mutex); | |
2400 | ||
2401 | /* | |
2402 | * Try to find if there is an bmc_device struct | |
2403 | * representing the interfaced BMC already | |
2404 | */ | |
2405 | if (bmc->guid_set) | |
fe2d5ffc | 2406 | old_bmc = ipmi_find_bmc_guid(&ipmidriver.driver, bmc->guid); |
50c812b2 | 2407 | else |
fe2d5ffc | 2408 | old_bmc = ipmi_find_bmc_prod_dev_id(&ipmidriver.driver, |
50c812b2 CM |
2409 | bmc->id.product_id, |
2410 | bmc->id.device_id); | |
2411 | ||
2412 | /* | |
2413 | * If there is already an bmc_device, free the new one, | |
2414 | * otherwise register the new BMC device | |
2415 | */ | |
2416 | if (old_bmc) { | |
2417 | kfree(bmc); | |
2418 | intf->bmc = old_bmc; | |
2419 | bmc = old_bmc; | |
2420 | ||
2421 | kref_get(&bmc->refcount); | |
2422 | mutex_unlock(&ipmidriver_mutex); | |
2423 | ||
2424 | printk(KERN_INFO | |
2425 | "ipmi: interfacing existing BMC (man_id: 0x%6.6x," | |
2426 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
2427 | bmc->id.manufacturer_id, | |
2428 | bmc->id.product_id, | |
2429 | bmc->id.device_id); | |
2430 | } else { | |
f0b55da0 CM |
2431 | char name[14]; |
2432 | unsigned char orig_dev_id = bmc->id.device_id; | |
2433 | int warn_printed = 0; | |
2434 | ||
2435 | snprintf(name, sizeof(name), | |
2436 | "ipmi_bmc.%4.4x", bmc->id.product_id); | |
2437 | ||
fe2d5ffc | 2438 | while (ipmi_find_bmc_prod_dev_id(&ipmidriver.driver, |
f0b55da0 | 2439 | bmc->id.product_id, |
1d5636cc | 2440 | bmc->id.device_id)) { |
f0b55da0 CM |
2441 | if (!warn_printed) { |
2442 | printk(KERN_WARNING PFX | |
2443 | "This machine has two different BMCs" | |
2444 | " with the same product id and device" | |
2445 | " id. This is an error in the" | |
2446 | " firmware, but incrementing the" | |
2447 | " device id to work around the problem." | |
2448 | " Prod ID = 0x%x, Dev ID = 0x%x\n", | |
2449 | bmc->id.product_id, bmc->id.device_id); | |
2450 | warn_printed = 1; | |
2451 | } | |
2452 | bmc->id.device_id++; /* Wraps at 255 */ | |
2453 | if (bmc->id.device_id == orig_dev_id) { | |
2454 | printk(KERN_ERR PFX | |
2455 | "Out of device ids!\n"); | |
2456 | break; | |
2457 | } | |
2458 | } | |
2459 | ||
2460 | bmc->dev = platform_device_alloc(name, bmc->id.device_id); | |
8a3628d5 | 2461 | if (!bmc->dev) { |
f0b55da0 | 2462 | mutex_unlock(&ipmidriver_mutex); |
50c812b2 CM |
2463 | printk(KERN_ERR |
2464 | "ipmi_msghandler:" | |
2465 | " Unable to allocate platform device\n"); | |
2466 | return -ENOMEM; | |
2467 | } | |
fe2d5ffc | 2468 | bmc->dev->dev.driver = &ipmidriver.driver; |
50c812b2 CM |
2469 | dev_set_drvdata(&bmc->dev->dev, bmc); |
2470 | kref_init(&bmc->refcount); | |
2471 | ||
b48f5457 | 2472 | rv = platform_device_add(bmc->dev); |
50c812b2 CM |
2473 | mutex_unlock(&ipmidriver_mutex); |
2474 | if (rv) { | |
f0b55da0 CM |
2475 | platform_device_put(bmc->dev); |
2476 | bmc->dev = NULL; | |
50c812b2 CM |
2477 | printk(KERN_ERR |
2478 | "ipmi_msghandler:" | |
2479 | " Unable to register bmc device: %d\n", | |
2480 | rv); | |
c70d7499 CM |
2481 | /* |
2482 | * Don't go to out_err, you can only do that if | |
2483 | * the device is registered already. | |
2484 | */ | |
50c812b2 CM |
2485 | return rv; |
2486 | } | |
2487 | ||
5e59393e JG |
2488 | rv = create_files(bmc); |
2489 | if (rv) { | |
2490 | mutex_lock(&ipmidriver_mutex); | |
2491 | platform_device_unregister(bmc->dev); | |
2492 | mutex_unlock(&ipmidriver_mutex); | |
2493 | ||
2494 | return rv; | |
2495 | } | |
50c812b2 CM |
2496 | |
2497 | printk(KERN_INFO | |
2498 | "ipmi: Found new BMC (man_id: 0x%6.6x, " | |
2499 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
2500 | bmc->id.manufacturer_id, | |
2501 | bmc->id.product_id, | |
2502 | bmc->id.device_id); | |
2503 | } | |
2504 | ||
2505 | /* | |
2506 | * create symlink from system interface device to bmc device | |
2507 | * and back. | |
2508 | */ | |
759643b8 CM |
2509 | intf->sysfs_name = kstrdup(sysfs_name, GFP_KERNEL); |
2510 | if (!intf->sysfs_name) { | |
2511 | rv = -ENOMEM; | |
2512 | printk(KERN_ERR | |
2513 | "ipmi_msghandler: allocate link to BMC: %d\n", | |
2514 | rv); | |
2515 | goto out_err; | |
2516 | } | |
2517 | ||
50c812b2 | 2518 | rv = sysfs_create_link(&intf->si_dev->kobj, |
759643b8 | 2519 | &bmc->dev->dev.kobj, intf->sysfs_name); |
50c812b2 | 2520 | if (rv) { |
759643b8 CM |
2521 | kfree(intf->sysfs_name); |
2522 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2523 | printk(KERN_ERR |
2524 | "ipmi_msghandler: Unable to create bmc symlink: %d\n", | |
2525 | rv); | |
2526 | goto out_err; | |
2527 | } | |
2528 | ||
759643b8 | 2529 | size = snprintf(dummy, 0, "ipmi%d", ifnum); |
50c812b2 CM |
2530 | intf->my_dev_name = kmalloc(size+1, GFP_KERNEL); |
2531 | if (!intf->my_dev_name) { | |
759643b8 CM |
2532 | kfree(intf->sysfs_name); |
2533 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2534 | rv = -ENOMEM; |
2535 | printk(KERN_ERR | |
2536 | "ipmi_msghandler: allocate link from BMC: %d\n", | |
2537 | rv); | |
2538 | goto out_err; | |
2539 | } | |
759643b8 | 2540 | snprintf(intf->my_dev_name, size+1, "ipmi%d", ifnum); |
50c812b2 CM |
2541 | |
2542 | rv = sysfs_create_link(&bmc->dev->dev.kobj, &intf->si_dev->kobj, | |
2543 | intf->my_dev_name); | |
2544 | if (rv) { | |
759643b8 CM |
2545 | kfree(intf->sysfs_name); |
2546 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2547 | kfree(intf->my_dev_name); |
2548 | intf->my_dev_name = NULL; | |
2549 | printk(KERN_ERR | |
2550 | "ipmi_msghandler:" | |
2551 | " Unable to create symlink to bmc: %d\n", | |
2552 | rv); | |
2553 | goto out_err; | |
2554 | } | |
2555 | ||
2556 | return 0; | |
2557 | ||
2558 | out_err: | |
2559 | ipmi_bmc_unregister(intf); | |
2560 | return rv; | |
2561 | } | |
2562 | ||
2563 | static int | |
2564 | send_guid_cmd(ipmi_smi_t intf, int chan) | |
2565 | { | |
2566 | struct kernel_ipmi_msg msg; | |
2567 | struct ipmi_system_interface_addr si; | |
2568 | ||
2569 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2570 | si.channel = IPMI_BMC_CHANNEL; | |
2571 | si.lun = 0; | |
2572 | ||
2573 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2574 | msg.cmd = IPMI_GET_DEVICE_GUID_CMD; | |
2575 | msg.data = NULL; | |
2576 | msg.data_len = 0; | |
2577 | return i_ipmi_request(NULL, | |
2578 | intf, | |
2579 | (struct ipmi_addr *) &si, | |
2580 | 0, | |
2581 | &msg, | |
2582 | intf, | |
2583 | NULL, | |
2584 | NULL, | |
2585 | 0, | |
2586 | intf->channels[0].address, | |
2587 | intf->channels[0].lun, | |
2588 | -1, 0); | |
2589 | } | |
2590 | ||
2591 | static void | |
2592 | guid_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) | |
2593 | { | |
2594 | if ((msg->addr.addr_type != IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
2595 | || (msg->msg.netfn != IPMI_NETFN_APP_RESPONSE) | |
2596 | || (msg->msg.cmd != IPMI_GET_DEVICE_GUID_CMD)) | |
2597 | /* Not for me */ | |
2598 | return; | |
2599 | ||
2600 | if (msg->msg.data[0] != 0) { | |
2601 | /* Error from getting the GUID, the BMC doesn't have one. */ | |
2602 | intf->bmc->guid_set = 0; | |
2603 | goto out; | |
2604 | } | |
2605 | ||
2606 | if (msg->msg.data_len < 17) { | |
2607 | intf->bmc->guid_set = 0; | |
2608 | printk(KERN_WARNING PFX | |
2609 | "guid_handler: The GUID response from the BMC was too" | |
2610 | " short, it was %d but should have been 17. Assuming" | |
2611 | " GUID is not available.\n", | |
2612 | msg->msg.data_len); | |
2613 | goto out; | |
2614 | } | |
2615 | ||
2616 | memcpy(intf->bmc->guid, msg->msg.data, 16); | |
2617 | intf->bmc->guid_set = 1; | |
2618 | out: | |
2619 | wake_up(&intf->waitq); | |
2620 | } | |
2621 | ||
2622 | static void | |
2623 | get_guid(ipmi_smi_t intf) | |
2624 | { | |
2625 | int rv; | |
2626 | ||
2627 | intf->bmc->guid_set = 0x2; | |
2628 | intf->null_user_handler = guid_handler; | |
2629 | rv = send_guid_cmd(intf, 0); | |
2630 | if (rv) | |
2631 | /* Send failed, no GUID available. */ | |
2632 | intf->bmc->guid_set = 0; | |
2633 | wait_event(intf->waitq, intf->bmc->guid_set != 2); | |
2634 | intf->null_user_handler = NULL; | |
2635 | } | |
2636 | ||
1da177e4 LT |
2637 | static int |
2638 | send_channel_info_cmd(ipmi_smi_t intf, int chan) | |
2639 | { | |
2640 | struct kernel_ipmi_msg msg; | |
2641 | unsigned char data[1]; | |
2642 | struct ipmi_system_interface_addr si; | |
2643 | ||
2644 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2645 | si.channel = IPMI_BMC_CHANNEL; | |
2646 | si.lun = 0; | |
2647 | ||
2648 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2649 | msg.cmd = IPMI_GET_CHANNEL_INFO_CMD; | |
2650 | msg.data = data; | |
2651 | msg.data_len = 1; | |
2652 | data[0] = chan; | |
2653 | return i_ipmi_request(NULL, | |
2654 | intf, | |
2655 | (struct ipmi_addr *) &si, | |
2656 | 0, | |
2657 | &msg, | |
56a55ec6 | 2658 | intf, |
1da177e4 LT |
2659 | NULL, |
2660 | NULL, | |
2661 | 0, | |
c14979b9 CM |
2662 | intf->channels[0].address, |
2663 | intf->channels[0].lun, | |
1da177e4 LT |
2664 | -1, 0); |
2665 | } | |
2666 | ||
2667 | static void | |
56a55ec6 | 2668 | channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 LT |
2669 | { |
2670 | int rv = 0; | |
2671 | int chan; | |
2672 | ||
56a55ec6 CM |
2673 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
2674 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
c70d7499 | 2675 | && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD)) { |
1da177e4 | 2676 | /* It's the one we want */ |
56a55ec6 | 2677 | if (msg->msg.data[0] != 0) { |
1da177e4 LT |
2678 | /* Got an error from the channel, just go on. */ |
2679 | ||
56a55ec6 | 2680 | if (msg->msg.data[0] == IPMI_INVALID_COMMAND_ERR) { |
c70d7499 CM |
2681 | /* |
2682 | * If the MC does not support this | |
2683 | * command, that is legal. We just | |
2684 | * assume it has one IPMB at channel | |
2685 | * zero. | |
2686 | */ | |
1da177e4 LT |
2687 | intf->channels[0].medium |
2688 | = IPMI_CHANNEL_MEDIUM_IPMB; | |
2689 | intf->channels[0].protocol | |
2690 | = IPMI_CHANNEL_PROTOCOL_IPMB; | |
2691 | rv = -ENOSYS; | |
2692 | ||
2693 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2694 | wake_up(&intf->waitq); | |
2695 | goto out; | |
2696 | } | |
2697 | goto next_channel; | |
2698 | } | |
56a55ec6 | 2699 | if (msg->msg.data_len < 4) { |
1da177e4 LT |
2700 | /* Message not big enough, just go on. */ |
2701 | goto next_channel; | |
2702 | } | |
2703 | chan = intf->curr_channel; | |
56a55ec6 CM |
2704 | intf->channels[chan].medium = msg->msg.data[2] & 0x7f; |
2705 | intf->channels[chan].protocol = msg->msg.data[3] & 0x1f; | |
1da177e4 | 2706 | |
c70d7499 | 2707 | next_channel: |
1da177e4 LT |
2708 | intf->curr_channel++; |
2709 | if (intf->curr_channel >= IPMI_MAX_CHANNELS) | |
2710 | wake_up(&intf->waitq); | |
2711 | else | |
2712 | rv = send_channel_info_cmd(intf, intf->curr_channel); | |
2713 | ||
2714 | if (rv) { | |
2715 | /* Got an error somehow, just give up. */ | |
2716 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2717 | wake_up(&intf->waitq); | |
2718 | ||
2719 | printk(KERN_WARNING PFX | |
2720 | "Error sending channel information: %d\n", | |
2721 | rv); | |
2722 | } | |
2723 | } | |
2724 | out: | |
2725 | return; | |
2726 | } | |
2727 | ||
fcfa4724 CM |
2728 | void ipmi_poll_interface(ipmi_user_t user) |
2729 | { | |
2730 | ipmi_smi_t intf = user->intf; | |
2731 | ||
2732 | if (intf->handlers->poll) | |
2733 | intf->handlers->poll(intf->send_info); | |
2734 | } | |
c70d7499 | 2735 | EXPORT_SYMBOL(ipmi_poll_interface); |
fcfa4724 | 2736 | |
1da177e4 LT |
2737 | int ipmi_register_smi(struct ipmi_smi_handlers *handlers, |
2738 | void *send_info, | |
50c812b2 CM |
2739 | struct ipmi_device_id *device_id, |
2740 | struct device *si_dev, | |
759643b8 | 2741 | const char *sysfs_name, |
453823ba | 2742 | unsigned char slave_addr) |
1da177e4 LT |
2743 | { |
2744 | int i, j; | |
2745 | int rv; | |
393d2cc3 | 2746 | ipmi_smi_t intf; |
bca0324d | 2747 | ipmi_smi_t tintf; |
bca0324d | 2748 | struct list_head *link; |
1da177e4 | 2749 | |
c70d7499 CM |
2750 | /* |
2751 | * Make sure the driver is actually initialized, this handles | |
2752 | * problems with initialization order. | |
2753 | */ | |
1da177e4 LT |
2754 | if (!initialized) { |
2755 | rv = ipmi_init_msghandler(); | |
2756 | if (rv) | |
2757 | return rv; | |
c70d7499 CM |
2758 | /* |
2759 | * The init code doesn't return an error if it was turned | |
2760 | * off, but it won't initialize. Check that. | |
2761 | */ | |
1da177e4 LT |
2762 | if (!initialized) |
2763 | return -ENODEV; | |
2764 | } | |
2765 | ||
dd00cc48 | 2766 | intf = kzalloc(sizeof(*intf), GFP_KERNEL); |
393d2cc3 | 2767 | if (!intf) |
1da177e4 | 2768 | return -ENOMEM; |
b2c03941 CM |
2769 | |
2770 | intf->ipmi_version_major = ipmi_version_major(device_id); | |
2771 | intf->ipmi_version_minor = ipmi_version_minor(device_id); | |
2772 | ||
50c812b2 CM |
2773 | intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL); |
2774 | if (!intf->bmc) { | |
2775 | kfree(intf); | |
2776 | return -ENOMEM; | |
2777 | } | |
bca0324d | 2778 | intf->intf_num = -1; /* Mark it invalid for now. */ |
393d2cc3 | 2779 | kref_init(&intf->refcount); |
50c812b2 CM |
2780 | intf->bmc->id = *device_id; |
2781 | intf->si_dev = si_dev; | |
393d2cc3 CM |
2782 | for (j = 0; j < IPMI_MAX_CHANNELS; j++) { |
2783 | intf->channels[j].address = IPMI_BMC_SLAVE_ADDR; | |
2784 | intf->channels[j].lun = 2; | |
2785 | } | |
2786 | if (slave_addr != 0) | |
2787 | intf->channels[0].address = slave_addr; | |
2788 | INIT_LIST_HEAD(&intf->users); | |
2789 | intf->handlers = handlers; | |
2790 | intf->send_info = send_info; | |
2791 | spin_lock_init(&intf->seq_lock); | |
2792 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) { | |
2793 | intf->seq_table[j].inuse = 0; | |
2794 | intf->seq_table[j].seqid = 0; | |
2795 | } | |
2796 | intf->curr_seq = 0; | |
2797 | #ifdef CONFIG_PROC_FS | |
ac019151 | 2798 | mutex_init(&intf->proc_entry_lock); |
393d2cc3 CM |
2799 | #endif |
2800 | spin_lock_init(&intf->waiting_msgs_lock); | |
2801 | INIT_LIST_HEAD(&intf->waiting_msgs); | |
2802 | spin_lock_init(&intf->events_lock); | |
2803 | INIT_LIST_HEAD(&intf->waiting_events); | |
2804 | intf->waiting_events_count = 0; | |
d6dfd131 | 2805 | mutex_init(&intf->cmd_rcvrs_mutex); |
b9675136 | 2806 | spin_lock_init(&intf->maintenance_mode_lock); |
393d2cc3 CM |
2807 | INIT_LIST_HEAD(&intf->cmd_rcvrs); |
2808 | init_waitqueue_head(&intf->waitq); | |
b2655f26 KB |
2809 | for (i = 0; i < IPMI_NUM_STATS; i++) |
2810 | atomic_set(&intf->stats[i], 0); | |
393d2cc3 | 2811 | |
393d2cc3 | 2812 | intf->proc_dir = NULL; |
1da177e4 | 2813 | |
b2c03941 | 2814 | mutex_lock(&smi_watchers_mutex); |
bca0324d CM |
2815 | mutex_lock(&ipmi_interfaces_mutex); |
2816 | /* Look for a hole in the numbers. */ | |
2817 | i = 0; | |
2818 | link = &ipmi_interfaces; | |
2819 | list_for_each_entry_rcu(tintf, &ipmi_interfaces, link) { | |
2820 | if (tintf->intf_num != i) { | |
2821 | link = &tintf->link; | |
1da177e4 LT |
2822 | break; |
2823 | } | |
bca0324d | 2824 | i++; |
1da177e4 | 2825 | } |
bca0324d CM |
2826 | /* Add the new interface in numeric order. */ |
2827 | if (i == 0) | |
2828 | list_add_rcu(&intf->link, &ipmi_interfaces); | |
2829 | else | |
2830 | list_add_tail_rcu(&intf->link, link); | |
1da177e4 | 2831 | |
453823ba CM |
2832 | rv = handlers->start_processing(send_info, intf); |
2833 | if (rv) | |
2834 | goto out; | |
1da177e4 | 2835 | |
50c812b2 CM |
2836 | get_guid(intf); |
2837 | ||
b2c03941 | 2838 | if ((intf->ipmi_version_major > 1) |
c70d7499 CM |
2839 | || ((intf->ipmi_version_major == 1) |
2840 | && (intf->ipmi_version_minor >= 5))) { | |
2841 | /* | |
2842 | * Start scanning the channels to see what is | |
2843 | * available. | |
2844 | */ | |
393d2cc3 CM |
2845 | intf->null_user_handler = channel_handler; |
2846 | intf->curr_channel = 0; | |
2847 | rv = send_channel_info_cmd(intf, 0); | |
2848 | if (rv) | |
2849 | goto out; | |
1da177e4 | 2850 | |
393d2cc3 CM |
2851 | /* Wait for the channel info to be read. */ |
2852 | wait_event(intf->waitq, | |
2853 | intf->curr_channel >= IPMI_MAX_CHANNELS); | |
50c812b2 | 2854 | intf->null_user_handler = NULL; |
393d2cc3 CM |
2855 | } else { |
2856 | /* Assume a single IPMB channel at zero. */ | |
2857 | intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; | |
2858 | intf->channels[0].protocol = IPMI_CHANNEL_PROTOCOL_IPMB; | |
1da177e4 LT |
2859 | } |
2860 | ||
393d2cc3 CM |
2861 | if (rv == 0) |
2862 | rv = add_proc_entries(intf, i); | |
1da177e4 | 2863 | |
759643b8 | 2864 | rv = ipmi_bmc_register(intf, i, sysfs_name); |
50c812b2 | 2865 | |
393d2cc3 | 2866 | out: |
1da177e4 | 2867 | if (rv) { |
393d2cc3 CM |
2868 | if (intf->proc_dir) |
2869 | remove_proc_entries(intf); | |
b2c03941 | 2870 | intf->handlers = NULL; |
bca0324d CM |
2871 | list_del_rcu(&intf->link); |
2872 | mutex_unlock(&ipmi_interfaces_mutex); | |
b2c03941 | 2873 | mutex_unlock(&smi_watchers_mutex); |
bca0324d | 2874 | synchronize_rcu(); |
393d2cc3 | 2875 | kref_put(&intf->refcount, intf_free); |
393d2cc3 | 2876 | } else { |
78ba2faf CM |
2877 | /* |
2878 | * Keep memory order straight for RCU readers. Make | |
2879 | * sure everything else is committed to memory before | |
2880 | * setting intf_num to mark the interface valid. | |
2881 | */ | |
2882 | smp_wmb(); | |
bca0324d CM |
2883 | intf->intf_num = i; |
2884 | mutex_unlock(&ipmi_interfaces_mutex); | |
78ba2faf | 2885 | /* After this point the interface is legal to use. */ |
50c812b2 | 2886 | call_smi_watchers(i, intf->si_dev); |
b2c03941 | 2887 | mutex_unlock(&smi_watchers_mutex); |
1da177e4 LT |
2888 | } |
2889 | ||
2890 | return rv; | |
2891 | } | |
c70d7499 | 2892 | EXPORT_SYMBOL(ipmi_register_smi); |
1da177e4 | 2893 | |
b2c03941 CM |
2894 | static void cleanup_smi_msgs(ipmi_smi_t intf) |
2895 | { | |
2896 | int i; | |
2897 | struct seq_table *ent; | |
2898 | ||
2899 | /* No need for locks, the interface is down. */ | |
2900 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { | |
2901 | ent = &(intf->seq_table[i]); | |
2902 | if (!ent->inuse) | |
2903 | continue; | |
2904 | deliver_err_response(ent->recv_msg, IPMI_ERR_UNSPECIFIED); | |
2905 | } | |
2906 | } | |
2907 | ||
1da177e4 LT |
2908 | int ipmi_unregister_smi(ipmi_smi_t intf) |
2909 | { | |
1da177e4 | 2910 | struct ipmi_smi_watcher *w; |
b2c03941 | 2911 | int intf_num = intf->intf_num; |
1da177e4 | 2912 | |
50c812b2 CM |
2913 | ipmi_bmc_unregister(intf); |
2914 | ||
b2c03941 | 2915 | mutex_lock(&smi_watchers_mutex); |
bca0324d | 2916 | mutex_lock(&ipmi_interfaces_mutex); |
b2c03941 CM |
2917 | intf->intf_num = -1; |
2918 | intf->handlers = NULL; | |
bca0324d CM |
2919 | list_del_rcu(&intf->link); |
2920 | mutex_unlock(&ipmi_interfaces_mutex); | |
2921 | synchronize_rcu(); | |
1da177e4 | 2922 | |
b2c03941 CM |
2923 | cleanup_smi_msgs(intf); |
2924 | ||
393d2cc3 | 2925 | remove_proc_entries(intf); |
1da177e4 | 2926 | |
c70d7499 CM |
2927 | /* |
2928 | * Call all the watcher interfaces to tell them that | |
2929 | * an interface is gone. | |
2930 | */ | |
393d2cc3 | 2931 | list_for_each_entry(w, &smi_watchers, link) |
b2c03941 CM |
2932 | w->smi_gone(intf_num); |
2933 | mutex_unlock(&smi_watchers_mutex); | |
393d2cc3 | 2934 | |
393d2cc3 | 2935 | kref_put(&intf->refcount, intf_free); |
1da177e4 LT |
2936 | return 0; |
2937 | } | |
c70d7499 | 2938 | EXPORT_SYMBOL(ipmi_unregister_smi); |
1da177e4 LT |
2939 | |
2940 | static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf, | |
2941 | struct ipmi_smi_msg *msg) | |
2942 | { | |
2943 | struct ipmi_ipmb_addr ipmb_addr; | |
2944 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 | 2945 | |
c70d7499 CM |
2946 | /* |
2947 | * This is 11, not 10, because the response must contain a | |
2948 | * completion code. | |
2949 | */ | |
1da177e4 LT |
2950 | if (msg->rsp_size < 11) { |
2951 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 2952 | ipmi_inc_stat(intf, invalid_ipmb_responses); |
1da177e4 LT |
2953 | return 0; |
2954 | } | |
2955 | ||
2956 | if (msg->rsp[2] != 0) { | |
2957 | /* An error getting the response, just ignore it. */ | |
2958 | return 0; | |
2959 | } | |
2960 | ||
2961 | ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; | |
2962 | ipmb_addr.slave_addr = msg->rsp[6]; | |
2963 | ipmb_addr.channel = msg->rsp[3] & 0x0f; | |
2964 | ipmb_addr.lun = msg->rsp[7] & 3; | |
2965 | ||
c70d7499 CM |
2966 | /* |
2967 | * It's a response from a remote entity. Look up the sequence | |
2968 | * number and handle the response. | |
2969 | */ | |
1da177e4 LT |
2970 | if (intf_find_seq(intf, |
2971 | msg->rsp[7] >> 2, | |
2972 | msg->rsp[3] & 0x0f, | |
2973 | msg->rsp[8], | |
2974 | (msg->rsp[4] >> 2) & (~1), | |
2975 | (struct ipmi_addr *) &(ipmb_addr), | |
c70d7499 CM |
2976 | &recv_msg)) { |
2977 | /* | |
2978 | * We were unable to find the sequence number, | |
2979 | * so just nuke the message. | |
2980 | */ | |
b2655f26 | 2981 | ipmi_inc_stat(intf, unhandled_ipmb_responses); |
1da177e4 LT |
2982 | return 0; |
2983 | } | |
2984 | ||
2985 | memcpy(recv_msg->msg_data, | |
2986 | &(msg->rsp[9]), | |
2987 | msg->rsp_size - 9); | |
c70d7499 CM |
2988 | /* |
2989 | * The other fields matched, so no need to set them, except | |
2990 | * for netfn, which needs to be the response that was | |
2991 | * returned, not the request value. | |
2992 | */ | |
1da177e4 LT |
2993 | recv_msg->msg.netfn = msg->rsp[4] >> 2; |
2994 | recv_msg->msg.data = recv_msg->msg_data; | |
2995 | recv_msg->msg.data_len = msg->rsp_size - 10; | |
2996 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
b2655f26 | 2997 | ipmi_inc_stat(intf, handled_ipmb_responses); |
1da177e4 LT |
2998 | deliver_response(recv_msg); |
2999 | ||
3000 | return 0; | |
3001 | } | |
3002 | ||
3003 | static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, | |
3004 | struct ipmi_smi_msg *msg) | |
3005 | { | |
393d2cc3 CM |
3006 | struct cmd_rcvr *rcvr; |
3007 | int rv = 0; | |
3008 | unsigned char netfn; | |
3009 | unsigned char cmd; | |
c69c3127 | 3010 | unsigned char chan; |
393d2cc3 CM |
3011 | ipmi_user_t user = NULL; |
3012 | struct ipmi_ipmb_addr *ipmb_addr; | |
3013 | struct ipmi_recv_msg *recv_msg; | |
b2c03941 | 3014 | struct ipmi_smi_handlers *handlers; |
1da177e4 LT |
3015 | |
3016 | if (msg->rsp_size < 10) { | |
3017 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3018 | ipmi_inc_stat(intf, invalid_commands); |
1da177e4 LT |
3019 | return 0; |
3020 | } | |
3021 | ||
3022 | if (msg->rsp[2] != 0) { | |
3023 | /* An error getting the response, just ignore it. */ | |
3024 | return 0; | |
3025 | } | |
3026 | ||
3027 | netfn = msg->rsp[4] >> 2; | |
3028 | cmd = msg->rsp[8]; | |
c69c3127 | 3029 | chan = msg->rsp[3] & 0xf; |
1da177e4 | 3030 | |
e61fb5b6 | 3031 | rcu_read_lock(); |
c69c3127 | 3032 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
393d2cc3 CM |
3033 | if (rcvr) { |
3034 | user = rcvr->user; | |
3035 | kref_get(&user->refcount); | |
3036 | } else | |
3037 | user = NULL; | |
e61fb5b6 | 3038 | rcu_read_unlock(); |
1da177e4 LT |
3039 | |
3040 | if (user == NULL) { | |
3041 | /* We didn't find a user, deliver an error response. */ | |
b2655f26 | 3042 | ipmi_inc_stat(intf, unhandled_commands); |
1da177e4 LT |
3043 | |
3044 | msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
3045 | msg->data[1] = IPMI_SEND_MSG_CMD; | |
3046 | msg->data[2] = msg->rsp[3]; | |
3047 | msg->data[3] = msg->rsp[6]; | |
c70d7499 | 3048 | msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); |
1da177e4 | 3049 | msg->data[5] = ipmb_checksum(&(msg->data[3]), 2); |
c14979b9 | 3050 | msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address; |
c70d7499 CM |
3051 | /* rqseq/lun */ |
3052 | msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); | |
1da177e4 LT |
3053 | msg->data[8] = msg->rsp[8]; /* cmd */ |
3054 | msg->data[9] = IPMI_INVALID_CMD_COMPLETION_CODE; | |
3055 | msg->data[10] = ipmb_checksum(&(msg->data[6]), 4); | |
3056 | msg->data_size = 11; | |
3057 | ||
3058 | #ifdef DEBUG_MSGING | |
3059 | { | |
3060 | int m; | |
3061 | printk("Invalid command:"); | |
e8b33617 | 3062 | for (m = 0; m < msg->data_size; m++) |
1da177e4 LT |
3063 | printk(" %2.2x", msg->data[m]); |
3064 | printk("\n"); | |
3065 | } | |
3066 | #endif | |
b2c03941 CM |
3067 | rcu_read_lock(); |
3068 | handlers = intf->handlers; | |
3069 | if (handlers) { | |
3070 | handlers->sender(intf->send_info, msg, 0); | |
c70d7499 CM |
3071 | /* |
3072 | * We used the message, so return the value | |
3073 | * that causes it to not be freed or | |
3074 | * queued. | |
3075 | */ | |
b2c03941 CM |
3076 | rv = -1; |
3077 | } | |
3078 | rcu_read_unlock(); | |
1da177e4 LT |
3079 | } else { |
3080 | /* Deliver the message to the user. */ | |
b2655f26 | 3081 | ipmi_inc_stat(intf, handled_commands); |
1da177e4 LT |
3082 | |
3083 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3084 | if (!recv_msg) { |
c70d7499 CM |
3085 | /* |
3086 | * We couldn't allocate memory for the | |
3087 | * message, so requeue it for handling | |
3088 | * later. | |
3089 | */ | |
1da177e4 | 3090 | rv = 1; |
393d2cc3 | 3091 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
3092 | } else { |
3093 | /* Extract the source address from the data. */ | |
3094 | ipmb_addr = (struct ipmi_ipmb_addr *) &recv_msg->addr; | |
3095 | ipmb_addr->addr_type = IPMI_IPMB_ADDR_TYPE; | |
3096 | ipmb_addr->slave_addr = msg->rsp[6]; | |
3097 | ipmb_addr->lun = msg->rsp[7] & 3; | |
3098 | ipmb_addr->channel = msg->rsp[3] & 0xf; | |
3099 | ||
c70d7499 CM |
3100 | /* |
3101 | * Extract the rest of the message information | |
3102 | * from the IPMB header. | |
3103 | */ | |
1da177e4 LT |
3104 | recv_msg->user = user; |
3105 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
3106 | recv_msg->msgid = msg->rsp[7] >> 2; | |
3107 | recv_msg->msg.netfn = msg->rsp[4] >> 2; | |
3108 | recv_msg->msg.cmd = msg->rsp[8]; | |
3109 | recv_msg->msg.data = recv_msg->msg_data; | |
3110 | ||
c70d7499 CM |
3111 | /* |
3112 | * We chop off 10, not 9 bytes because the checksum | |
3113 | * at the end also needs to be removed. | |
3114 | */ | |
1da177e4 LT |
3115 | recv_msg->msg.data_len = msg->rsp_size - 10; |
3116 | memcpy(recv_msg->msg_data, | |
3117 | &(msg->rsp[9]), | |
3118 | msg->rsp_size - 10); | |
3119 | deliver_response(recv_msg); | |
3120 | } | |
3121 | } | |
3122 | ||
3123 | return rv; | |
3124 | } | |
3125 | ||
3126 | static int handle_lan_get_msg_rsp(ipmi_smi_t intf, | |
3127 | struct ipmi_smi_msg *msg) | |
3128 | { | |
3129 | struct ipmi_lan_addr lan_addr; | |
3130 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 LT |
3131 | |
3132 | ||
c70d7499 CM |
3133 | /* |
3134 | * This is 13, not 12, because the response must contain a | |
3135 | * completion code. | |
3136 | */ | |
1da177e4 LT |
3137 | if (msg->rsp_size < 13) { |
3138 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3139 | ipmi_inc_stat(intf, invalid_lan_responses); |
1da177e4 LT |
3140 | return 0; |
3141 | } | |
3142 | ||
3143 | if (msg->rsp[2] != 0) { | |
3144 | /* An error getting the response, just ignore it. */ | |
3145 | return 0; | |
3146 | } | |
3147 | ||
3148 | lan_addr.addr_type = IPMI_LAN_ADDR_TYPE; | |
3149 | lan_addr.session_handle = msg->rsp[4]; | |
3150 | lan_addr.remote_SWID = msg->rsp[8]; | |
3151 | lan_addr.local_SWID = msg->rsp[5]; | |
3152 | lan_addr.channel = msg->rsp[3] & 0x0f; | |
3153 | lan_addr.privilege = msg->rsp[3] >> 4; | |
3154 | lan_addr.lun = msg->rsp[9] & 3; | |
3155 | ||
c70d7499 CM |
3156 | /* |
3157 | * It's a response from a remote entity. Look up the sequence | |
3158 | * number and handle the response. | |
3159 | */ | |
1da177e4 LT |
3160 | if (intf_find_seq(intf, |
3161 | msg->rsp[9] >> 2, | |
3162 | msg->rsp[3] & 0x0f, | |
3163 | msg->rsp[10], | |
3164 | (msg->rsp[6] >> 2) & (~1), | |
3165 | (struct ipmi_addr *) &(lan_addr), | |
c70d7499 CM |
3166 | &recv_msg)) { |
3167 | /* | |
3168 | * We were unable to find the sequence number, | |
3169 | * so just nuke the message. | |
3170 | */ | |
b2655f26 | 3171 | ipmi_inc_stat(intf, unhandled_lan_responses); |
1da177e4 LT |
3172 | return 0; |
3173 | } | |
3174 | ||
3175 | memcpy(recv_msg->msg_data, | |
3176 | &(msg->rsp[11]), | |
3177 | msg->rsp_size - 11); | |
c70d7499 CM |
3178 | /* |
3179 | * The other fields matched, so no need to set them, except | |
3180 | * for netfn, which needs to be the response that was | |
3181 | * returned, not the request value. | |
3182 | */ | |
1da177e4 LT |
3183 | recv_msg->msg.netfn = msg->rsp[6] >> 2; |
3184 | recv_msg->msg.data = recv_msg->msg_data; | |
3185 | recv_msg->msg.data_len = msg->rsp_size - 12; | |
3186 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
b2655f26 | 3187 | ipmi_inc_stat(intf, handled_lan_responses); |
1da177e4 LT |
3188 | deliver_response(recv_msg); |
3189 | ||
3190 | return 0; | |
3191 | } | |
3192 | ||
3193 | static int handle_lan_get_msg_cmd(ipmi_smi_t intf, | |
3194 | struct ipmi_smi_msg *msg) | |
3195 | { | |
393d2cc3 CM |
3196 | struct cmd_rcvr *rcvr; |
3197 | int rv = 0; | |
3198 | unsigned char netfn; | |
3199 | unsigned char cmd; | |
c69c3127 | 3200 | unsigned char chan; |
393d2cc3 CM |
3201 | ipmi_user_t user = NULL; |
3202 | struct ipmi_lan_addr *lan_addr; | |
3203 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 LT |
3204 | |
3205 | if (msg->rsp_size < 12) { | |
3206 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3207 | ipmi_inc_stat(intf, invalid_commands); |
1da177e4 LT |
3208 | return 0; |
3209 | } | |
3210 | ||
3211 | if (msg->rsp[2] != 0) { | |
3212 | /* An error getting the response, just ignore it. */ | |
3213 | return 0; | |
3214 | } | |
3215 | ||
3216 | netfn = msg->rsp[6] >> 2; | |
3217 | cmd = msg->rsp[10]; | |
c69c3127 | 3218 | chan = msg->rsp[3] & 0xf; |
1da177e4 | 3219 | |
e61fb5b6 | 3220 | rcu_read_lock(); |
c69c3127 | 3221 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
393d2cc3 CM |
3222 | if (rcvr) { |
3223 | user = rcvr->user; | |
3224 | kref_get(&user->refcount); | |
3225 | } else | |
3226 | user = NULL; | |
e61fb5b6 | 3227 | rcu_read_unlock(); |
1da177e4 LT |
3228 | |
3229 | if (user == NULL) { | |
393d2cc3 | 3230 | /* We didn't find a user, just give up. */ |
b2655f26 | 3231 | ipmi_inc_stat(intf, unhandled_commands); |
1da177e4 | 3232 | |
c70d7499 CM |
3233 | /* |
3234 | * Don't do anything with these messages, just allow | |
3235 | * them to be freed. | |
3236 | */ | |
3237 | rv = 0; | |
1da177e4 LT |
3238 | } else { |
3239 | /* Deliver the message to the user. */ | |
b2655f26 | 3240 | ipmi_inc_stat(intf, handled_commands); |
1da177e4 LT |
3241 | |
3242 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3243 | if (!recv_msg) { |
c70d7499 CM |
3244 | /* |
3245 | * We couldn't allocate memory for the | |
3246 | * message, so requeue it for handling later. | |
3247 | */ | |
1da177e4 | 3248 | rv = 1; |
393d2cc3 | 3249 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
3250 | } else { |
3251 | /* Extract the source address from the data. */ | |
3252 | lan_addr = (struct ipmi_lan_addr *) &recv_msg->addr; | |
3253 | lan_addr->addr_type = IPMI_LAN_ADDR_TYPE; | |
3254 | lan_addr->session_handle = msg->rsp[4]; | |
3255 | lan_addr->remote_SWID = msg->rsp[8]; | |
3256 | lan_addr->local_SWID = msg->rsp[5]; | |
3257 | lan_addr->lun = msg->rsp[9] & 3; | |
3258 | lan_addr->channel = msg->rsp[3] & 0xf; | |
3259 | lan_addr->privilege = msg->rsp[3] >> 4; | |
3260 | ||
c70d7499 CM |
3261 | /* |
3262 | * Extract the rest of the message information | |
3263 | * from the IPMB header. | |
3264 | */ | |
1da177e4 LT |
3265 | recv_msg->user = user; |
3266 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
3267 | recv_msg->msgid = msg->rsp[9] >> 2; | |
3268 | recv_msg->msg.netfn = msg->rsp[6] >> 2; | |
3269 | recv_msg->msg.cmd = msg->rsp[10]; | |
3270 | recv_msg->msg.data = recv_msg->msg_data; | |
3271 | ||
c70d7499 CM |
3272 | /* |
3273 | * We chop off 12, not 11 bytes because the checksum | |
3274 | * at the end also needs to be removed. | |
3275 | */ | |
1da177e4 LT |
3276 | recv_msg->msg.data_len = msg->rsp_size - 12; |
3277 | memcpy(recv_msg->msg_data, | |
3278 | &(msg->rsp[11]), | |
3279 | msg->rsp_size - 12); | |
3280 | deliver_response(recv_msg); | |
3281 | } | |
3282 | } | |
3283 | ||
3284 | return rv; | |
3285 | } | |
3286 | ||
4dec302f | 3287 | /* |
3288 | * This routine will handle "Get Message" command responses with | |
3289 | * channels that use an OEM Medium. The message format belongs to | |
3290 | * the OEM. See IPMI 2.0 specification, Chapter 6 and | |
3291 | * Chapter 22, sections 22.6 and 22.24 for more details. | |
3292 | */ | |
3293 | static int handle_oem_get_msg_cmd(ipmi_smi_t intf, | |
3294 | struct ipmi_smi_msg *msg) | |
3295 | { | |
3296 | struct cmd_rcvr *rcvr; | |
3297 | int rv = 0; | |
3298 | unsigned char netfn; | |
3299 | unsigned char cmd; | |
3300 | unsigned char chan; | |
3301 | ipmi_user_t user = NULL; | |
3302 | struct ipmi_system_interface_addr *smi_addr; | |
3303 | struct ipmi_recv_msg *recv_msg; | |
3304 | ||
3305 | /* | |
3306 | * We expect the OEM SW to perform error checking | |
3307 | * so we just do some basic sanity checks | |
3308 | */ | |
3309 | if (msg->rsp_size < 4) { | |
3310 | /* Message not big enough, just ignore it. */ | |
3311 | ipmi_inc_stat(intf, invalid_commands); | |
3312 | return 0; | |
3313 | } | |
3314 | ||
3315 | if (msg->rsp[2] != 0) { | |
3316 | /* An error getting the response, just ignore it. */ | |
3317 | return 0; | |
3318 | } | |
3319 | ||
3320 | /* | |
3321 | * This is an OEM Message so the OEM needs to know how | |
3322 | * handle the message. We do no interpretation. | |
3323 | */ | |
3324 | netfn = msg->rsp[0] >> 2; | |
3325 | cmd = msg->rsp[1]; | |
3326 | chan = msg->rsp[3] & 0xf; | |
3327 | ||
3328 | rcu_read_lock(); | |
3329 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); | |
3330 | if (rcvr) { | |
3331 | user = rcvr->user; | |
3332 | kref_get(&user->refcount); | |
3333 | } else | |
3334 | user = NULL; | |
3335 | rcu_read_unlock(); | |
3336 | ||
3337 | if (user == NULL) { | |
3338 | /* We didn't find a user, just give up. */ | |
3339 | ipmi_inc_stat(intf, unhandled_commands); | |
3340 | ||
3341 | /* | |
3342 | * Don't do anything with these messages, just allow | |
3343 | * them to be freed. | |
3344 | */ | |
3345 | ||
3346 | rv = 0; | |
3347 | } else { | |
3348 | /* Deliver the message to the user. */ | |
3349 | ipmi_inc_stat(intf, handled_commands); | |
3350 | ||
3351 | recv_msg = ipmi_alloc_recv_msg(); | |
3352 | if (!recv_msg) { | |
3353 | /* | |
3354 | * We couldn't allocate memory for the | |
3355 | * message, so requeue it for handling | |
3356 | * later. | |
3357 | */ | |
3358 | rv = 1; | |
3359 | kref_put(&user->refcount, free_user); | |
3360 | } else { | |
3361 | /* | |
3362 | * OEM Messages are expected to be delivered via | |
3363 | * the system interface to SMS software. We might | |
3364 | * need to visit this again depending on OEM | |
3365 | * requirements | |
3366 | */ | |
3367 | smi_addr = ((struct ipmi_system_interface_addr *) | |
3368 | &(recv_msg->addr)); | |
3369 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3370 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3371 | smi_addr->lun = msg->rsp[0] & 3; | |
3372 | ||
3373 | recv_msg->user = user; | |
3374 | recv_msg->user_msg_data = NULL; | |
3375 | recv_msg->recv_type = IPMI_OEM_RECV_TYPE; | |
3376 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3377 | recv_msg->msg.cmd = msg->rsp[1]; | |
3378 | recv_msg->msg.data = recv_msg->msg_data; | |
3379 | ||
3380 | /* | |
3381 | * The message starts at byte 4 which follows the | |
3382 | * the Channel Byte in the "GET MESSAGE" command | |
3383 | */ | |
3384 | recv_msg->msg.data_len = msg->rsp_size - 4; | |
3385 | memcpy(recv_msg->msg_data, | |
3386 | &(msg->rsp[4]), | |
3387 | msg->rsp_size - 4); | |
3388 | deliver_response(recv_msg); | |
3389 | } | |
3390 | } | |
3391 | ||
3392 | return rv; | |
3393 | } | |
3394 | ||
1da177e4 LT |
3395 | static void copy_event_into_recv_msg(struct ipmi_recv_msg *recv_msg, |
3396 | struct ipmi_smi_msg *msg) | |
3397 | { | |
3398 | struct ipmi_system_interface_addr *smi_addr; | |
c70d7499 | 3399 | |
1da177e4 LT |
3400 | recv_msg->msgid = 0; |
3401 | smi_addr = (struct ipmi_system_interface_addr *) &(recv_msg->addr); | |
3402 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3403 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3404 | smi_addr->lun = msg->rsp[0] & 3; | |
3405 | recv_msg->recv_type = IPMI_ASYNC_EVENT_RECV_TYPE; | |
3406 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3407 | recv_msg->msg.cmd = msg->rsp[1]; | |
3408 | memcpy(recv_msg->msg_data, &(msg->rsp[3]), msg->rsp_size - 3); | |
3409 | recv_msg->msg.data = recv_msg->msg_data; | |
3410 | recv_msg->msg.data_len = msg->rsp_size - 3; | |
3411 | } | |
3412 | ||
1da177e4 LT |
3413 | static int handle_read_event_rsp(ipmi_smi_t intf, |
3414 | struct ipmi_smi_msg *msg) | |
3415 | { | |
3416 | struct ipmi_recv_msg *recv_msg, *recv_msg2; | |
3417 | struct list_head msgs; | |
3418 | ipmi_user_t user; | |
3419 | int rv = 0; | |
3420 | int deliver_count = 0; | |
3421 | unsigned long flags; | |
3422 | ||
3423 | if (msg->rsp_size < 19) { | |
3424 | /* Message is too small to be an IPMB event. */ | |
b2655f26 | 3425 | ipmi_inc_stat(intf, invalid_events); |
1da177e4 LT |
3426 | return 0; |
3427 | } | |
3428 | ||
3429 | if (msg->rsp[2] != 0) { | |
3430 | /* An error getting the event, just ignore it. */ | |
3431 | return 0; | |
3432 | } | |
3433 | ||
3434 | INIT_LIST_HEAD(&msgs); | |
3435 | ||
393d2cc3 | 3436 | spin_lock_irqsave(&intf->events_lock, flags); |
1da177e4 | 3437 | |
b2655f26 | 3438 | ipmi_inc_stat(intf, events); |
1da177e4 | 3439 | |
c70d7499 CM |
3440 | /* |
3441 | * Allocate and fill in one message for every user that is | |
3442 | * getting events. | |
3443 | */ | |
393d2cc3 CM |
3444 | rcu_read_lock(); |
3445 | list_for_each_entry_rcu(user, &intf->users, link) { | |
8a3628d5 | 3446 | if (!user->gets_events) |
1da177e4 LT |
3447 | continue; |
3448 | ||
3449 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3450 | if (!recv_msg) { |
393d2cc3 | 3451 | rcu_read_unlock(); |
8a3628d5 CM |
3452 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, |
3453 | link) { | |
1da177e4 LT |
3454 | list_del(&recv_msg->link); |
3455 | ipmi_free_recv_msg(recv_msg); | |
3456 | } | |
c70d7499 CM |
3457 | /* |
3458 | * We couldn't allocate memory for the | |
3459 | * message, so requeue it for handling | |
3460 | * later. | |
3461 | */ | |
1da177e4 LT |
3462 | rv = 1; |
3463 | goto out; | |
3464 | } | |
3465 | ||
3466 | deliver_count++; | |
3467 | ||
3468 | copy_event_into_recv_msg(recv_msg, msg); | |
3469 | recv_msg->user = user; | |
393d2cc3 | 3470 | kref_get(&user->refcount); |
1da177e4 LT |
3471 | list_add_tail(&(recv_msg->link), &msgs); |
3472 | } | |
393d2cc3 | 3473 | rcu_read_unlock(); |
1da177e4 LT |
3474 | |
3475 | if (deliver_count) { | |
3476 | /* Now deliver all the messages. */ | |
3477 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, link) { | |
3478 | list_del(&recv_msg->link); | |
3479 | deliver_response(recv_msg); | |
3480 | } | |
3481 | } else if (intf->waiting_events_count < MAX_EVENTS_IN_QUEUE) { | |
c70d7499 CM |
3482 | /* |
3483 | * No one to receive the message, put it in queue if there's | |
3484 | * not already too many things in the queue. | |
3485 | */ | |
1da177e4 | 3486 | recv_msg = ipmi_alloc_recv_msg(); |
8a3628d5 | 3487 | if (!recv_msg) { |
c70d7499 CM |
3488 | /* |
3489 | * We couldn't allocate memory for the | |
3490 | * message, so requeue it for handling | |
3491 | * later. | |
3492 | */ | |
1da177e4 LT |
3493 | rv = 1; |
3494 | goto out; | |
3495 | } | |
3496 | ||
3497 | copy_event_into_recv_msg(recv_msg, msg); | |
3498 | list_add_tail(&(recv_msg->link), &(intf->waiting_events)); | |
4791c03d | 3499 | intf->waiting_events_count++; |
87ebd06f | 3500 | } else if (!intf->event_msg_printed) { |
c70d7499 CM |
3501 | /* |
3502 | * There's too many things in the queue, discard this | |
3503 | * message. | |
3504 | */ | |
87ebd06f CM |
3505 | printk(KERN_WARNING PFX "Event queue full, discarding" |
3506 | " incoming events\n"); | |
3507 | intf->event_msg_printed = 1; | |
1da177e4 LT |
3508 | } |
3509 | ||
3510 | out: | |
3511 | spin_unlock_irqrestore(&(intf->events_lock), flags); | |
3512 | ||
3513 | return rv; | |
3514 | } | |
3515 | ||
3516 | static int handle_bmc_rsp(ipmi_smi_t intf, | |
3517 | struct ipmi_smi_msg *msg) | |
3518 | { | |
3519 | struct ipmi_recv_msg *recv_msg; | |
393d2cc3 | 3520 | struct ipmi_user *user; |
1da177e4 LT |
3521 | |
3522 | recv_msg = (struct ipmi_recv_msg *) msg->user_data; | |
c70d7499 CM |
3523 | if (recv_msg == NULL) { |
3524 | printk(KERN_WARNING | |
3525 | "IPMI message received with no owner. This\n" | |
3526 | "could be because of a malformed message, or\n" | |
3527 | "because of a hardware error. Contact your\n" | |
3528 | "hardware vender for assistance\n"); | |
56a55ec6 CM |
3529 | return 0; |
3530 | } | |
1da177e4 | 3531 | |
393d2cc3 | 3532 | user = recv_msg->user; |
1da177e4 | 3533 | /* Make sure the user still exists. */ |
393d2cc3 | 3534 | if (user && !user->valid) { |
56a55ec6 | 3535 | /* The user for the message went away, so give up. */ |
b2655f26 | 3536 | ipmi_inc_stat(intf, unhandled_local_responses); |
1da177e4 LT |
3537 | ipmi_free_recv_msg(recv_msg); |
3538 | } else { | |
3539 | struct ipmi_system_interface_addr *smi_addr; | |
3540 | ||
b2655f26 | 3541 | ipmi_inc_stat(intf, handled_local_responses); |
1da177e4 LT |
3542 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
3543 | recv_msg->msgid = msg->msgid; | |
3544 | smi_addr = ((struct ipmi_system_interface_addr *) | |
3545 | &(recv_msg->addr)); | |
3546 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3547 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3548 | smi_addr->lun = msg->rsp[0] & 3; | |
3549 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3550 | recv_msg->msg.cmd = msg->rsp[1]; | |
3551 | memcpy(recv_msg->msg_data, | |
3552 | &(msg->rsp[2]), | |
3553 | msg->rsp_size - 2); | |
3554 | recv_msg->msg.data = recv_msg->msg_data; | |
3555 | recv_msg->msg.data_len = msg->rsp_size - 2; | |
3556 | deliver_response(recv_msg); | |
3557 | } | |
3558 | ||
3559 | return 0; | |
3560 | } | |
3561 | ||
c70d7499 CM |
3562 | /* |
3563 | * Handle a new message. Return 1 if the message should be requeued, | |
3564 | * 0 if the message should be freed, or -1 if the message should not | |
3565 | * be freed or requeued. | |
3566 | */ | |
1da177e4 LT |
3567 | static int handle_new_recv_msg(ipmi_smi_t intf, |
3568 | struct ipmi_smi_msg *msg) | |
3569 | { | |
3570 | int requeue; | |
3571 | int chan; | |
3572 | ||
3573 | #ifdef DEBUG_MSGING | |
3574 | int m; | |
3575 | printk("Recv:"); | |
e8b33617 | 3576 | for (m = 0; m < msg->rsp_size; m++) |
1da177e4 LT |
3577 | printk(" %2.2x", msg->rsp[m]); |
3578 | printk("\n"); | |
3579 | #endif | |
3580 | if (msg->rsp_size < 2) { | |
3581 | /* Message is too small to be correct. */ | |
3582 | printk(KERN_WARNING PFX "BMC returned to small a message" | |
3583 | " for netfn %x cmd %x, got %d bytes\n", | |
3584 | (msg->data[0] >> 2) | 1, msg->data[1], msg->rsp_size); | |
3585 | ||
3586 | /* Generate an error response for the message. */ | |
3587 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3588 | msg->rsp[1] = msg->data[1]; | |
3589 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3590 | msg->rsp_size = 3; | |
c70d7499 CM |
3591 | } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1)) |
3592 | || (msg->rsp[1] != msg->data[1])) { | |
3593 | /* | |
3594 | * The NetFN and Command in the response is not even | |
3595 | * marginally correct. | |
3596 | */ | |
1da177e4 LT |
3597 | printk(KERN_WARNING PFX "BMC returned incorrect response," |
3598 | " expected netfn %x cmd %x, got netfn %x cmd %x\n", | |
3599 | (msg->data[0] >> 2) | 1, msg->data[1], | |
3600 | msg->rsp[0] >> 2, msg->rsp[1]); | |
3601 | ||
3602 | /* Generate an error response for the message. */ | |
3603 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3604 | msg->rsp[1] = msg->data[1]; | |
3605 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3606 | msg->rsp_size = 3; | |
3607 | } | |
3608 | ||
3609 | if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
3610 | && (msg->rsp[1] == IPMI_SEND_MSG_CMD) | |
c70d7499 CM |
3611 | && (msg->user_data != NULL)) { |
3612 | /* | |
3613 | * It's a response to a response we sent. For this we | |
3614 | * deliver a send message response to the user. | |
3615 | */ | |
393d2cc3 | 3616 | struct ipmi_recv_msg *recv_msg = msg->user_data; |
1da177e4 LT |
3617 | |
3618 | requeue = 0; | |
3619 | if (msg->rsp_size < 2) | |
3620 | /* Message is too small to be correct. */ | |
3621 | goto out; | |
3622 | ||
3623 | chan = msg->data[2] & 0x0f; | |
3624 | if (chan >= IPMI_MAX_CHANNELS) | |
3625 | /* Invalid channel number */ | |
3626 | goto out; | |
3627 | ||
393d2cc3 CM |
3628 | if (!recv_msg) |
3629 | goto out; | |
3630 | ||
3631 | /* Make sure the user still exists. */ | |
3632 | if (!recv_msg->user || !recv_msg->user->valid) | |
3633 | goto out; | |
3634 | ||
3635 | recv_msg->recv_type = IPMI_RESPONSE_RESPONSE_TYPE; | |
3636 | recv_msg->msg.data = recv_msg->msg_data; | |
3637 | recv_msg->msg.data_len = 1; | |
3638 | recv_msg->msg_data[0] = msg->rsp[2]; | |
3639 | deliver_response(recv_msg); | |
1da177e4 | 3640 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
c70d7499 | 3641 | && (msg->rsp[1] == IPMI_GET_MSG_CMD)) { |
1da177e4 LT |
3642 | /* It's from the receive queue. */ |
3643 | chan = msg->rsp[3] & 0xf; | |
3644 | if (chan >= IPMI_MAX_CHANNELS) { | |
3645 | /* Invalid channel number */ | |
3646 | requeue = 0; | |
3647 | goto out; | |
3648 | } | |
3649 | ||
4dec302f | 3650 | /* |
3651 | ** We need to make sure the channels have been initialized. | |
3652 | ** The channel_handler routine will set the "curr_channel" | |
3653 | ** equal to or greater than IPMI_MAX_CHANNELS when all the | |
3654 | ** channels for this interface have been initialized. | |
3655 | */ | |
3656 | if (intf->curr_channel < IPMI_MAX_CHANNELS) { | |
3657 | requeue = 1; /* Just put the message back for now */ | |
3658 | goto out; | |
3659 | } | |
3660 | ||
1da177e4 LT |
3661 | switch (intf->channels[chan].medium) { |
3662 | case IPMI_CHANNEL_MEDIUM_IPMB: | |
3663 | if (msg->rsp[4] & 0x04) { | |
c70d7499 CM |
3664 | /* |
3665 | * It's a response, so find the | |
3666 | * requesting message and send it up. | |
3667 | */ | |
1da177e4 LT |
3668 | requeue = handle_ipmb_get_msg_rsp(intf, msg); |
3669 | } else { | |
c70d7499 CM |
3670 | /* |
3671 | * It's a command to the SMS from some other | |
3672 | * entity. Handle that. | |
3673 | */ | |
1da177e4 LT |
3674 | requeue = handle_ipmb_get_msg_cmd(intf, msg); |
3675 | } | |
3676 | break; | |
3677 | ||
3678 | case IPMI_CHANNEL_MEDIUM_8023LAN: | |
3679 | case IPMI_CHANNEL_MEDIUM_ASYNC: | |
3680 | if (msg->rsp[6] & 0x04) { | |
c70d7499 CM |
3681 | /* |
3682 | * It's a response, so find the | |
3683 | * requesting message and send it up. | |
3684 | */ | |
1da177e4 LT |
3685 | requeue = handle_lan_get_msg_rsp(intf, msg); |
3686 | } else { | |
c70d7499 CM |
3687 | /* |
3688 | * It's a command to the SMS from some other | |
3689 | * entity. Handle that. | |
3690 | */ | |
1da177e4 LT |
3691 | requeue = handle_lan_get_msg_cmd(intf, msg); |
3692 | } | |
3693 | break; | |
3694 | ||
3695 | default: | |
4dec302f | 3696 | /* Check for OEM Channels. Clients had better |
3697 | register for these commands. */ | |
3698 | if ((intf->channels[chan].medium | |
3699 | >= IPMI_CHANNEL_MEDIUM_OEM_MIN) | |
3700 | && (intf->channels[chan].medium | |
3701 | <= IPMI_CHANNEL_MEDIUM_OEM_MAX)) { | |
3702 | requeue = handle_oem_get_msg_cmd(intf, msg); | |
3703 | } else { | |
3704 | /* | |
3705 | * We don't handle the channel type, so just | |
3706 | * free the message. | |
3707 | */ | |
3708 | requeue = 0; | |
3709 | } | |
1da177e4 LT |
3710 | } |
3711 | ||
3712 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
c70d7499 | 3713 | && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD)) { |
1da177e4 LT |
3714 | /* It's an asyncronous event. */ |
3715 | requeue = handle_read_event_rsp(intf, msg); | |
3716 | } else { | |
3717 | /* It's a response from the local BMC. */ | |
3718 | requeue = handle_bmc_rsp(intf, msg); | |
3719 | } | |
3720 | ||
3721 | out: | |
3722 | return requeue; | |
3723 | } | |
3724 | ||
3725 | /* Handle a new message from the lower layer. */ | |
3726 | void ipmi_smi_msg_received(ipmi_smi_t intf, | |
3727 | struct ipmi_smi_msg *msg) | |
3728 | { | |
5956dce1 | 3729 | unsigned long flags = 0; /* keep us warning-free. */ |
1da177e4 | 3730 | int rv; |
5956dce1 | 3731 | int run_to_completion; |
1da177e4 LT |
3732 | |
3733 | ||
1da177e4 LT |
3734 | if ((msg->data_size >= 2) |
3735 | && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) | |
3736 | && (msg->data[1] == IPMI_SEND_MSG_CMD) | |
c70d7499 CM |
3737 | && (msg->user_data == NULL)) { |
3738 | /* | |
3739 | * This is the local response to a command send, start | |
3740 | * the timer for these. The user_data will not be | |
3741 | * NULL if this is a response send, and we will let | |
3742 | * response sends just go through. | |
3743 | */ | |
3744 | ||
3745 | /* | |
3746 | * Check for errors, if we get certain errors (ones | |
3747 | * that mean basically we can try again later), we | |
3748 | * ignore them and start the timer. Otherwise we | |
3749 | * report the error immediately. | |
3750 | */ | |
1da177e4 LT |
3751 | if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) |
3752 | && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) | |
46d52b09 CM |
3753 | && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR) |
3754 | && (msg->rsp[2] != IPMI_BUS_ERR) | |
c70d7499 | 3755 | && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) { |
1da177e4 LT |
3756 | int chan = msg->rsp[3] & 0xf; |
3757 | ||
3758 | /* Got an error sending the message, handle it. */ | |
1da177e4 LT |
3759 | if (chan >= IPMI_MAX_CHANNELS) |
3760 | ; /* This shouldn't happen */ | |
3761 | else if ((intf->channels[chan].medium | |
3762 | == IPMI_CHANNEL_MEDIUM_8023LAN) | |
3763 | || (intf->channels[chan].medium | |
3764 | == IPMI_CHANNEL_MEDIUM_ASYNC)) | |
b2655f26 | 3765 | ipmi_inc_stat(intf, sent_lan_command_errs); |
1da177e4 | 3766 | else |
b2655f26 | 3767 | ipmi_inc_stat(intf, sent_ipmb_command_errs); |
1da177e4 | 3768 | intf_err_seq(intf, msg->msgid, msg->rsp[2]); |
c70d7499 | 3769 | } else |
1da177e4 LT |
3770 | /* The message was sent, start the timer. */ |
3771 | intf_start_seq_timer(intf, msg->msgid); | |
1da177e4 LT |
3772 | |
3773 | ipmi_free_smi_msg(msg); | |
393d2cc3 | 3774 | goto out; |
1da177e4 LT |
3775 | } |
3776 | ||
c70d7499 CM |
3777 | /* |
3778 | * To preserve message order, if the list is not empty, we | |
3779 | * tack this message onto the end of the list. | |
3780 | */ | |
5956dce1 KB |
3781 | run_to_completion = intf->run_to_completion; |
3782 | if (!run_to_completion) | |
3783 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); | |
393d2cc3 CM |
3784 | if (!list_empty(&intf->waiting_msgs)) { |
3785 | list_add_tail(&msg->link, &intf->waiting_msgs); | |
5956dce1 KB |
3786 | if (!run_to_completion) |
3787 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
393d2cc3 | 3788 | goto out; |
1da177e4 | 3789 | } |
5956dce1 KB |
3790 | if (!run_to_completion) |
3791 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
c70d7499 | 3792 | |
1da177e4 LT |
3793 | rv = handle_new_recv_msg(intf, msg); |
3794 | if (rv > 0) { | |
c70d7499 CM |
3795 | /* |
3796 | * Could not handle the message now, just add it to a | |
3797 | * list to handle later. | |
3798 | */ | |
5956dce1 KB |
3799 | run_to_completion = intf->run_to_completion; |
3800 | if (!run_to_completion) | |
3801 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); | |
393d2cc3 | 3802 | list_add_tail(&msg->link, &intf->waiting_msgs); |
5956dce1 KB |
3803 | if (!run_to_completion) |
3804 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
1da177e4 LT |
3805 | } else if (rv == 0) { |
3806 | ipmi_free_smi_msg(msg); | |
3807 | } | |
3808 | ||
393d2cc3 CM |
3809 | out: |
3810 | return; | |
1da177e4 | 3811 | } |
c70d7499 | 3812 | EXPORT_SYMBOL(ipmi_smi_msg_received); |
1da177e4 LT |
3813 | |
3814 | void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf) | |
3815 | { | |
3816 | ipmi_user_t user; | |
3817 | ||
393d2cc3 CM |
3818 | rcu_read_lock(); |
3819 | list_for_each_entry_rcu(user, &intf->users, link) { | |
8a3628d5 | 3820 | if (!user->handler->ipmi_watchdog_pretimeout) |
1da177e4 LT |
3821 | continue; |
3822 | ||
3823 | user->handler->ipmi_watchdog_pretimeout(user->handler_data); | |
3824 | } | |
393d2cc3 | 3825 | rcu_read_unlock(); |
1da177e4 | 3826 | } |
c70d7499 | 3827 | EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); |
1da177e4 | 3828 | |
882fe011 CM |
3829 | static struct ipmi_smi_msg * |
3830 | smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, | |
3831 | unsigned char seq, long seqid) | |
1da177e4 | 3832 | { |
882fe011 | 3833 | struct ipmi_smi_msg *smi_msg = ipmi_alloc_smi_msg(); |
1da177e4 | 3834 | if (!smi_msg) |
c70d7499 CM |
3835 | /* |
3836 | * If we can't allocate the message, then just return, we | |
3837 | * get 4 retries, so this should be ok. | |
3838 | */ | |
882fe011 | 3839 | return NULL; |
1da177e4 LT |
3840 | |
3841 | memcpy(smi_msg->data, recv_msg->msg.data, recv_msg->msg.data_len); | |
3842 | smi_msg->data_size = recv_msg->msg.data_len; | |
3843 | smi_msg->msgid = STORE_SEQ_IN_MSGID(seq, seqid); | |
c70d7499 | 3844 | |
1da177e4 LT |
3845 | #ifdef DEBUG_MSGING |
3846 | { | |
3847 | int m; | |
3848 | printk("Resend: "); | |
e8b33617 | 3849 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
3850 | printk(" %2.2x", smi_msg->data[m]); |
3851 | printk("\n"); | |
3852 | } | |
3853 | #endif | |
882fe011 | 3854 | return smi_msg; |
1da177e4 LT |
3855 | } |
3856 | ||
393d2cc3 CM |
3857 | static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent, |
3858 | struct list_head *timeouts, long timeout_period, | |
3859 | int slot, unsigned long *flags) | |
3860 | { | |
b2c03941 CM |
3861 | struct ipmi_recv_msg *msg; |
3862 | struct ipmi_smi_handlers *handlers; | |
3863 | ||
3864 | if (intf->intf_num == -1) | |
3865 | return; | |
393d2cc3 CM |
3866 | |
3867 | if (!ent->inuse) | |
3868 | return; | |
3869 | ||
3870 | ent->timeout -= timeout_period; | |
3871 | if (ent->timeout > 0) | |
3872 | return; | |
3873 | ||
3874 | if (ent->retries_left == 0) { | |
3875 | /* The message has used all its retries. */ | |
3876 | ent->inuse = 0; | |
3877 | msg = ent->recv_msg; | |
3878 | list_add_tail(&msg->link, timeouts); | |
393d2cc3 | 3879 | if (ent->broadcast) |
b2655f26 | 3880 | ipmi_inc_stat(intf, timed_out_ipmb_broadcasts); |
25176ed6 | 3881 | else if (is_lan_addr(&ent->recv_msg->addr)) |
b2655f26 | 3882 | ipmi_inc_stat(intf, timed_out_lan_commands); |
393d2cc3 | 3883 | else |
b2655f26 | 3884 | ipmi_inc_stat(intf, timed_out_ipmb_commands); |
393d2cc3 CM |
3885 | } else { |
3886 | struct ipmi_smi_msg *smi_msg; | |
3887 | /* More retries, send again. */ | |
3888 | ||
c70d7499 CM |
3889 | /* |
3890 | * Start with the max timer, set to normal timer after | |
3891 | * the message is sent. | |
3892 | */ | |
393d2cc3 CM |
3893 | ent->timeout = MAX_MSG_TIMEOUT; |
3894 | ent->retries_left--; | |
393d2cc3 CM |
3895 | smi_msg = smi_from_recv_msg(intf, ent->recv_msg, slot, |
3896 | ent->seqid); | |
25176ed6 CM |
3897 | if (!smi_msg) { |
3898 | if (is_lan_addr(&ent->recv_msg->addr)) | |
3899 | ipmi_inc_stat(intf, | |
3900 | dropped_rexmit_lan_commands); | |
3901 | else | |
3902 | ipmi_inc_stat(intf, | |
3903 | dropped_rexmit_ipmb_commands); | |
393d2cc3 | 3904 | return; |
25176ed6 | 3905 | } |
393d2cc3 CM |
3906 | |
3907 | spin_unlock_irqrestore(&intf->seq_lock, *flags); | |
b2c03941 | 3908 | |
c70d7499 CM |
3909 | /* |
3910 | * Send the new message. We send with a zero | |
3911 | * priority. It timed out, I doubt time is that | |
3912 | * critical now, and high priority messages are really | |
3913 | * only for messages to the local MC, which don't get | |
3914 | * resent. | |
3915 | */ | |
b2c03941 | 3916 | handlers = intf->handlers; |
25176ed6 CM |
3917 | if (handlers) { |
3918 | if (is_lan_addr(&ent->recv_msg->addr)) | |
3919 | ipmi_inc_stat(intf, | |
3920 | retransmitted_lan_commands); | |
3921 | else | |
3922 | ipmi_inc_stat(intf, | |
3923 | retransmitted_ipmb_commands); | |
3924 | ||
b2c03941 CM |
3925 | intf->handlers->sender(intf->send_info, |
3926 | smi_msg, 0); | |
25176ed6 | 3927 | } else |
b2c03941 CM |
3928 | ipmi_free_smi_msg(smi_msg); |
3929 | ||
393d2cc3 CM |
3930 | spin_lock_irqsave(&intf->seq_lock, *flags); |
3931 | } | |
3932 | } | |
3933 | ||
3934 | static void ipmi_timeout_handler(long timeout_period) | |
1da177e4 LT |
3935 | { |
3936 | ipmi_smi_t intf; | |
3937 | struct list_head timeouts; | |
3938 | struct ipmi_recv_msg *msg, *msg2; | |
3939 | struct ipmi_smi_msg *smi_msg, *smi_msg2; | |
3940 | unsigned long flags; | |
bca0324d | 3941 | int i; |
1da177e4 | 3942 | |
bca0324d CM |
3943 | rcu_read_lock(); |
3944 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
1da177e4 | 3945 | /* See if any waiting messages need to be processed. */ |
393d2cc3 | 3946 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
8a3628d5 CM |
3947 | list_for_each_entry_safe(smi_msg, smi_msg2, |
3948 | &intf->waiting_msgs, link) { | |
3949 | if (!handle_new_recv_msg(intf, smi_msg)) { | |
1da177e4 LT |
3950 | list_del(&smi_msg->link); |
3951 | ipmi_free_smi_msg(smi_msg); | |
3952 | } else { | |
c70d7499 CM |
3953 | /* |
3954 | * To preserve message order, quit if we | |
3955 | * can't handle a message. | |
3956 | */ | |
1da177e4 LT |
3957 | break; |
3958 | } | |
3959 | } | |
393d2cc3 | 3960 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
1da177e4 | 3961 | |
c70d7499 CM |
3962 | /* |
3963 | * Go through the seq table and find any messages that | |
3964 | * have timed out, putting them in the timeouts | |
3965 | * list. | |
3966 | */ | |
41c57a87 | 3967 | INIT_LIST_HEAD(&timeouts); |
393d2cc3 | 3968 | spin_lock_irqsave(&intf->seq_lock, flags); |
bca0324d CM |
3969 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) |
3970 | check_msg_timeout(intf, &(intf->seq_table[i]), | |
3971 | &timeouts, timeout_period, i, | |
393d2cc3 CM |
3972 | &flags); |
3973 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
3974 | ||
3975 | list_for_each_entry_safe(msg, msg2, &timeouts, link) | |
b2c03941 | 3976 | deliver_err_response(msg, IPMI_TIMEOUT_COMPLETION_CODE); |
b9675136 CM |
3977 | |
3978 | /* | |
3979 | * Maintenance mode handling. Check the timeout | |
3980 | * optimistically before we claim the lock. It may | |
3981 | * mean a timeout gets missed occasionally, but that | |
3982 | * only means the timeout gets extended by one period | |
3983 | * in that case. No big deal, and it avoids the lock | |
3984 | * most of the time. | |
3985 | */ | |
3986 | if (intf->auto_maintenance_timeout > 0) { | |
3987 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); | |
3988 | if (intf->auto_maintenance_timeout > 0) { | |
3989 | intf->auto_maintenance_timeout | |
3990 | -= timeout_period; | |
3991 | if (!intf->maintenance_mode | |
c70d7499 | 3992 | && (intf->auto_maintenance_timeout <= 0)) { |
b9675136 CM |
3993 | intf->maintenance_mode_enable = 0; |
3994 | maintenance_mode_update(intf); | |
3995 | } | |
3996 | } | |
3997 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, | |
3998 | flags); | |
3999 | } | |
1da177e4 | 4000 | } |
bca0324d | 4001 | rcu_read_unlock(); |
1da177e4 LT |
4002 | } |
4003 | ||
4004 | static void ipmi_request_event(void) | |
4005 | { | |
b2c03941 CM |
4006 | ipmi_smi_t intf; |
4007 | struct ipmi_smi_handlers *handlers; | |
1da177e4 | 4008 | |
bca0324d | 4009 | rcu_read_lock(); |
c70d7499 CM |
4010 | /* |
4011 | * Called from the timer, no need to check if handlers is | |
4012 | * valid. | |
4013 | */ | |
b2c03941 | 4014 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b9675136 CM |
4015 | /* No event requests when in maintenance mode. */ |
4016 | if (intf->maintenance_mode_enable) | |
4017 | continue; | |
4018 | ||
b2c03941 CM |
4019 | handlers = intf->handlers; |
4020 | if (handlers) | |
4021 | handlers->request_events(intf->send_info); | |
4022 | } | |
bca0324d | 4023 | rcu_read_unlock(); |
1da177e4 LT |
4024 | } |
4025 | ||
4026 | static struct timer_list ipmi_timer; | |
4027 | ||
4028 | /* Call every ~100 ms. */ | |
4029 | #define IPMI_TIMEOUT_TIME 100 | |
4030 | ||
4031 | /* How many jiffies does it take to get to the timeout time. */ | |
4032 | #define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000) | |
4033 | ||
c70d7499 CM |
4034 | /* |
4035 | * Request events from the queue every second (this is the number of | |
4036 | * IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the | |
4037 | * future, IPMI will add a way to know immediately if an event is in | |
4038 | * the queue and this silliness can go away. | |
4039 | */ | |
1da177e4 LT |
4040 | #define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME)) |
4041 | ||
8f43f84f | 4042 | static atomic_t stop_operation; |
1da177e4 LT |
4043 | static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
4044 | ||
4045 | static void ipmi_timeout(unsigned long data) | |
4046 | { | |
8f43f84f | 4047 | if (atomic_read(&stop_operation)) |
1da177e4 | 4048 | return; |
1da177e4 LT |
4049 | |
4050 | ticks_to_req_ev--; | |
4051 | if (ticks_to_req_ev == 0) { | |
4052 | ipmi_request_event(); | |
4053 | ticks_to_req_ev = IPMI_REQUEST_EV_TIME; | |
4054 | } | |
4055 | ||
4056 | ipmi_timeout_handler(IPMI_TIMEOUT_TIME); | |
4057 | ||
8f43f84f | 4058 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); |
1da177e4 LT |
4059 | } |
4060 | ||
4061 | ||
4062 | static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0); | |
4063 | static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0); | |
4064 | ||
4065 | /* FIXME - convert these to slabs. */ | |
4066 | static void free_smi_msg(struct ipmi_smi_msg *msg) | |
4067 | { | |
4068 | atomic_dec(&smi_msg_inuse_count); | |
4069 | kfree(msg); | |
4070 | } | |
4071 | ||
4072 | struct ipmi_smi_msg *ipmi_alloc_smi_msg(void) | |
4073 | { | |
4074 | struct ipmi_smi_msg *rv; | |
4075 | rv = kmalloc(sizeof(struct ipmi_smi_msg), GFP_ATOMIC); | |
4076 | if (rv) { | |
4077 | rv->done = free_smi_msg; | |
4078 | rv->user_data = NULL; | |
4079 | atomic_inc(&smi_msg_inuse_count); | |
4080 | } | |
4081 | return rv; | |
4082 | } | |
c70d7499 | 4083 | EXPORT_SYMBOL(ipmi_alloc_smi_msg); |
1da177e4 LT |
4084 | |
4085 | static void free_recv_msg(struct ipmi_recv_msg *msg) | |
4086 | { | |
4087 | atomic_dec(&recv_msg_inuse_count); | |
4088 | kfree(msg); | |
4089 | } | |
4090 | ||
74006309 | 4091 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void) |
1da177e4 LT |
4092 | { |
4093 | struct ipmi_recv_msg *rv; | |
4094 | ||
4095 | rv = kmalloc(sizeof(struct ipmi_recv_msg), GFP_ATOMIC); | |
4096 | if (rv) { | |
a9eec556 | 4097 | rv->user = NULL; |
1da177e4 LT |
4098 | rv->done = free_recv_msg; |
4099 | atomic_inc(&recv_msg_inuse_count); | |
4100 | } | |
4101 | return rv; | |
4102 | } | |
4103 | ||
393d2cc3 CM |
4104 | void ipmi_free_recv_msg(struct ipmi_recv_msg *msg) |
4105 | { | |
4106 | if (msg->user) | |
4107 | kref_put(&msg->user->refcount, free_user); | |
4108 | msg->done(msg); | |
4109 | } | |
c70d7499 | 4110 | EXPORT_SYMBOL(ipmi_free_recv_msg); |
393d2cc3 | 4111 | |
1da177e4 LT |
4112 | #ifdef CONFIG_IPMI_PANIC_EVENT |
4113 | ||
4114 | static void dummy_smi_done_handler(struct ipmi_smi_msg *msg) | |
4115 | { | |
4116 | } | |
4117 | ||
4118 | static void dummy_recv_done_handler(struct ipmi_recv_msg *msg) | |
4119 | { | |
4120 | } | |
4121 | ||
4122 | #ifdef CONFIG_IPMI_PANIC_STRING | |
56a55ec6 | 4123 | static void event_receiver_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 4124 | { |
56a55ec6 CM |
4125 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
4126 | && (msg->msg.netfn == IPMI_NETFN_SENSOR_EVENT_RESPONSE) | |
4127 | && (msg->msg.cmd == IPMI_GET_EVENT_RECEIVER_CMD) | |
c70d7499 | 4128 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { |
1da177e4 | 4129 | /* A get event receiver command, save it. */ |
56a55ec6 CM |
4130 | intf->event_receiver = msg->msg.data[1]; |
4131 | intf->event_receiver_lun = msg->msg.data[2] & 0x3; | |
1da177e4 LT |
4132 | } |
4133 | } | |
4134 | ||
56a55ec6 | 4135 | static void device_id_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 4136 | { |
56a55ec6 CM |
4137 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
4138 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
4139 | && (msg->msg.cmd == IPMI_GET_DEVICE_ID_CMD) | |
c70d7499 CM |
4140 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { |
4141 | /* | |
4142 | * A get device id command, save if we are an event | |
4143 | * receiver or generator. | |
4144 | */ | |
56a55ec6 CM |
4145 | intf->local_sel_device = (msg->msg.data[6] >> 2) & 1; |
4146 | intf->local_event_generator = (msg->msg.data[6] >> 5) & 1; | |
1da177e4 LT |
4147 | } |
4148 | } | |
4149 | #endif | |
4150 | ||
4151 | static void send_panic_events(char *str) | |
4152 | { | |
4153 | struct kernel_ipmi_msg msg; | |
4154 | ipmi_smi_t intf; | |
4155 | unsigned char data[16]; | |
1da177e4 LT |
4156 | struct ipmi_system_interface_addr *si; |
4157 | struct ipmi_addr addr; | |
4158 | struct ipmi_smi_msg smi_msg; | |
4159 | struct ipmi_recv_msg recv_msg; | |
4160 | ||
4161 | si = (struct ipmi_system_interface_addr *) &addr; | |
4162 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
4163 | si->channel = IPMI_BMC_CHANNEL; | |
4164 | si->lun = 0; | |
4165 | ||
4166 | /* Fill in an event telling that we have failed. */ | |
4167 | msg.netfn = 0x04; /* Sensor or Event. */ | |
4168 | msg.cmd = 2; /* Platform event command. */ | |
4169 | msg.data = data; | |
4170 | msg.data_len = 8; | |
cda315ab | 4171 | data[0] = 0x41; /* Kernel generator ID, IPMI table 5-4 */ |
1da177e4 LT |
4172 | data[1] = 0x03; /* This is for IPMI 1.0. */ |
4173 | data[2] = 0x20; /* OS Critical Stop, IPMI table 36-3 */ | |
4174 | data[4] = 0x6f; /* Sensor specific, IPMI table 36-1 */ | |
4175 | data[5] = 0xa1; /* Runtime stop OEM bytes 2 & 3. */ | |
4176 | ||
c70d7499 CM |
4177 | /* |
4178 | * Put a few breadcrumbs in. Hopefully later we can add more things | |
4179 | * to make the panic events more useful. | |
4180 | */ | |
1da177e4 LT |
4181 | if (str) { |
4182 | data[3] = str[0]; | |
4183 | data[6] = str[1]; | |
4184 | data[7] = str[2]; | |
4185 | } | |
4186 | ||
4187 | smi_msg.done = dummy_smi_done_handler; | |
4188 | recv_msg.done = dummy_recv_done_handler; | |
4189 | ||
4190 | /* For every registered interface, send the event. */ | |
bca0324d | 4191 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b2c03941 CM |
4192 | if (!intf->handlers) |
4193 | /* Interface is not ready. */ | |
1da177e4 LT |
4194 | continue; |
4195 | ||
5956dce1 | 4196 | intf->run_to_completion = 1; |
1da177e4 LT |
4197 | /* Send the event announcing the panic. */ |
4198 | intf->handlers->set_run_to_completion(intf->send_info, 1); | |
4199 | i_ipmi_request(NULL, | |
4200 | intf, | |
4201 | &addr, | |
4202 | 0, | |
4203 | &msg, | |
56a55ec6 | 4204 | intf, |
1da177e4 LT |
4205 | &smi_msg, |
4206 | &recv_msg, | |
4207 | 0, | |
c14979b9 CM |
4208 | intf->channels[0].address, |
4209 | intf->channels[0].lun, | |
1da177e4 LT |
4210 | 0, 1); /* Don't retry, and don't wait. */ |
4211 | } | |
4212 | ||
4213 | #ifdef CONFIG_IPMI_PANIC_STRING | |
c70d7499 CM |
4214 | /* |
4215 | * On every interface, dump a bunch of OEM event holding the | |
4216 | * string. | |
4217 | */ | |
4218 | if (!str) | |
1da177e4 LT |
4219 | return; |
4220 | ||
bca0324d CM |
4221 | /* For every registered interface, send the event. */ |
4222 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
1da177e4 LT |
4223 | char *p = str; |
4224 | struct ipmi_ipmb_addr *ipmb; | |
4225 | int j; | |
4226 | ||
bca0324d CM |
4227 | if (intf->intf_num == -1) |
4228 | /* Interface was not ready yet. */ | |
1da177e4 LT |
4229 | continue; |
4230 | ||
78ba2faf CM |
4231 | /* |
4232 | * intf_num is used as an marker to tell if the | |
4233 | * interface is valid. Thus we need a read barrier to | |
4234 | * make sure data fetched before checking intf_num | |
4235 | * won't be used. | |
4236 | */ | |
4237 | smp_rmb(); | |
4238 | ||
c70d7499 CM |
4239 | /* |
4240 | * First job here is to figure out where to send the | |
4241 | * OEM events. There's no way in IPMI to send OEM | |
4242 | * events using an event send command, so we have to | |
4243 | * find the SEL to put them in and stick them in | |
4244 | * there. | |
4245 | */ | |
1da177e4 LT |
4246 | |
4247 | /* Get capabilities from the get device id. */ | |
4248 | intf->local_sel_device = 0; | |
4249 | intf->local_event_generator = 0; | |
4250 | intf->event_receiver = 0; | |
4251 | ||
4252 | /* Request the device info from the local MC. */ | |
4253 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
4254 | msg.cmd = IPMI_GET_DEVICE_ID_CMD; | |
4255 | msg.data = NULL; | |
4256 | msg.data_len = 0; | |
4257 | intf->null_user_handler = device_id_fetcher; | |
4258 | i_ipmi_request(NULL, | |
4259 | intf, | |
4260 | &addr, | |
4261 | 0, | |
4262 | &msg, | |
56a55ec6 | 4263 | intf, |
1da177e4 LT |
4264 | &smi_msg, |
4265 | &recv_msg, | |
4266 | 0, | |
c14979b9 CM |
4267 | intf->channels[0].address, |
4268 | intf->channels[0].lun, | |
1da177e4 LT |
4269 | 0, 1); /* Don't retry, and don't wait. */ |
4270 | ||
4271 | if (intf->local_event_generator) { | |
4272 | /* Request the event receiver from the local MC. */ | |
4273 | msg.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; | |
4274 | msg.cmd = IPMI_GET_EVENT_RECEIVER_CMD; | |
4275 | msg.data = NULL; | |
4276 | msg.data_len = 0; | |
4277 | intf->null_user_handler = event_receiver_fetcher; | |
4278 | i_ipmi_request(NULL, | |
4279 | intf, | |
4280 | &addr, | |
4281 | 0, | |
4282 | &msg, | |
56a55ec6 | 4283 | intf, |
1da177e4 LT |
4284 | &smi_msg, |
4285 | &recv_msg, | |
4286 | 0, | |
c14979b9 CM |
4287 | intf->channels[0].address, |
4288 | intf->channels[0].lun, | |
1da177e4 LT |
4289 | 0, 1); /* no retry, and no wait. */ |
4290 | } | |
4291 | intf->null_user_handler = NULL; | |
4292 | ||
c70d7499 CM |
4293 | /* |
4294 | * Validate the event receiver. The low bit must not | |
4295 | * be 1 (it must be a valid IPMB address), it cannot | |
4296 | * be zero, and it must not be my address. | |
4297 | */ | |
4298 | if (((intf->event_receiver & 1) == 0) | |
1da177e4 | 4299 | && (intf->event_receiver != 0) |
c70d7499 CM |
4300 | && (intf->event_receiver != intf->channels[0].address)) { |
4301 | /* | |
4302 | * The event receiver is valid, send an IPMB | |
4303 | * message. | |
4304 | */ | |
1da177e4 LT |
4305 | ipmb = (struct ipmi_ipmb_addr *) &addr; |
4306 | ipmb->addr_type = IPMI_IPMB_ADDR_TYPE; | |
4307 | ipmb->channel = 0; /* FIXME - is this right? */ | |
4308 | ipmb->lun = intf->event_receiver_lun; | |
4309 | ipmb->slave_addr = intf->event_receiver; | |
4310 | } else if (intf->local_sel_device) { | |
c70d7499 CM |
4311 | /* |
4312 | * The event receiver was not valid (or was | |
4313 | * me), but I am an SEL device, just dump it | |
4314 | * in my SEL. | |
4315 | */ | |
1da177e4 LT |
4316 | si = (struct ipmi_system_interface_addr *) &addr; |
4317 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
4318 | si->channel = IPMI_BMC_CHANNEL; | |
4319 | si->lun = 0; | |
4320 | } else | |
4321 | continue; /* No where to send the event. */ | |
4322 | ||
1da177e4 LT |
4323 | msg.netfn = IPMI_NETFN_STORAGE_REQUEST; /* Storage. */ |
4324 | msg.cmd = IPMI_ADD_SEL_ENTRY_CMD; | |
4325 | msg.data = data; | |
4326 | msg.data_len = 16; | |
4327 | ||
4328 | j = 0; | |
4329 | while (*p) { | |
4330 | int size = strlen(p); | |
4331 | ||
4332 | if (size > 11) | |
4333 | size = 11; | |
4334 | data[0] = 0; | |
4335 | data[1] = 0; | |
4336 | data[2] = 0xf0; /* OEM event without timestamp. */ | |
c14979b9 | 4337 | data[3] = intf->channels[0].address; |
1da177e4 | 4338 | data[4] = j++; /* sequence # */ |
c70d7499 CM |
4339 | /* |
4340 | * Always give 11 bytes, so strncpy will fill | |
4341 | * it with zeroes for me. | |
4342 | */ | |
1da177e4 LT |
4343 | strncpy(data+5, p, 11); |
4344 | p += size; | |
4345 | ||
4346 | i_ipmi_request(NULL, | |
4347 | intf, | |
4348 | &addr, | |
4349 | 0, | |
4350 | &msg, | |
56a55ec6 | 4351 | intf, |
1da177e4 LT |
4352 | &smi_msg, |
4353 | &recv_msg, | |
4354 | 0, | |
c14979b9 CM |
4355 | intf->channels[0].address, |
4356 | intf->channels[0].lun, | |
1da177e4 LT |
4357 | 0, 1); /* no retry, and no wait. */ |
4358 | } | |
c70d7499 | 4359 | } |
1da177e4 LT |
4360 | #endif /* CONFIG_IPMI_PANIC_STRING */ |
4361 | } | |
4362 | #endif /* CONFIG_IPMI_PANIC_EVENT */ | |
4363 | ||
0c8204b3 | 4364 | static int has_panicked; |
1da177e4 LT |
4365 | |
4366 | static int panic_event(struct notifier_block *this, | |
4367 | unsigned long event, | |
c70d7499 | 4368 | void *ptr) |
1da177e4 | 4369 | { |
1da177e4 LT |
4370 | ipmi_smi_t intf; |
4371 | ||
f18190bd | 4372 | if (has_panicked) |
1da177e4 | 4373 | return NOTIFY_DONE; |
f18190bd | 4374 | has_panicked = 1; |
1da177e4 LT |
4375 | |
4376 | /* For every registered interface, set it to run to completion. */ | |
bca0324d | 4377 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b2c03941 CM |
4378 | if (!intf->handlers) |
4379 | /* Interface is not ready. */ | |
1da177e4 LT |
4380 | continue; |
4381 | ||
5956dce1 | 4382 | intf->run_to_completion = 1; |
1da177e4 LT |
4383 | intf->handlers->set_run_to_completion(intf->send_info, 1); |
4384 | } | |
4385 | ||
4386 | #ifdef CONFIG_IPMI_PANIC_EVENT | |
4387 | send_panic_events(ptr); | |
4388 | #endif | |
4389 | ||
4390 | return NOTIFY_DONE; | |
4391 | } | |
4392 | ||
4393 | static struct notifier_block panic_block = { | |
4394 | .notifier_call = panic_event, | |
4395 | .next = NULL, | |
4396 | .priority = 200 /* priority: INT_MAX >= x >= 0 */ | |
4397 | }; | |
4398 | ||
4399 | static int ipmi_init_msghandler(void) | |
4400 | { | |
50c812b2 | 4401 | int rv; |
1da177e4 LT |
4402 | |
4403 | if (initialized) | |
4404 | return 0; | |
4405 | ||
fe2d5ffc | 4406 | rv = driver_register(&ipmidriver.driver); |
50c812b2 CM |
4407 | if (rv) { |
4408 | printk(KERN_ERR PFX "Could not register IPMI driver\n"); | |
4409 | return rv; | |
4410 | } | |
4411 | ||
1da177e4 | 4412 | printk(KERN_INFO "ipmi message handler version " |
1fdd75bd | 4413 | IPMI_DRIVER_VERSION "\n"); |
1da177e4 | 4414 | |
3b625943 | 4415 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
4416 | proc_ipmi_root = proc_mkdir("ipmi", NULL); |
4417 | if (!proc_ipmi_root) { | |
4418 | printk(KERN_ERR PFX "Unable to create IPMI proc dir"); | |
4419 | return -ENOMEM; | |
4420 | } | |
4421 | ||
3b625943 | 4422 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 4423 | |
409035e0 CM |
4424 | setup_timer(&ipmi_timer, ipmi_timeout, 0); |
4425 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); | |
1da177e4 | 4426 | |
e041c683 | 4427 | atomic_notifier_chain_register(&panic_notifier_list, &panic_block); |
1da177e4 LT |
4428 | |
4429 | initialized = 1; | |
4430 | ||
4431 | return 0; | |
4432 | } | |
4433 | ||
4434 | static __init int ipmi_init_msghandler_mod(void) | |
4435 | { | |
4436 | ipmi_init_msghandler(); | |
4437 | return 0; | |
4438 | } | |
4439 | ||
4440 | static __exit void cleanup_ipmi(void) | |
4441 | { | |
4442 | int count; | |
4443 | ||
4444 | if (!initialized) | |
4445 | return; | |
4446 | ||
e041c683 | 4447 | atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block); |
1da177e4 | 4448 | |
c70d7499 CM |
4449 | /* |
4450 | * This can't be called if any interfaces exist, so no worry | |
4451 | * about shutting down the interfaces. | |
4452 | */ | |
1da177e4 | 4453 | |
c70d7499 CM |
4454 | /* |
4455 | * Tell the timer to stop, then wait for it to stop. This | |
4456 | * avoids problems with race conditions removing the timer | |
4457 | * here. | |
4458 | */ | |
8f43f84f CM |
4459 | atomic_inc(&stop_operation); |
4460 | del_timer_sync(&ipmi_timer); | |
1da177e4 | 4461 | |
3b625943 | 4462 | #ifdef CONFIG_PROC_FS |
3542ae4c | 4463 | remove_proc_entry(proc_ipmi_root->name, NULL); |
3b625943 | 4464 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 4465 | |
fe2d5ffc | 4466 | driver_unregister(&ipmidriver.driver); |
50c812b2 | 4467 | |
1da177e4 LT |
4468 | initialized = 0; |
4469 | ||
4470 | /* Check for buffer leaks. */ | |
4471 | count = atomic_read(&smi_msg_inuse_count); | |
4472 | if (count != 0) | |
4473 | printk(KERN_WARNING PFX "SMI message count %d at exit\n", | |
4474 | count); | |
4475 | count = atomic_read(&recv_msg_inuse_count); | |
4476 | if (count != 0) | |
4477 | printk(KERN_WARNING PFX "recv message count %d at exit\n", | |
4478 | count); | |
4479 | } | |
4480 | module_exit(cleanup_ipmi); | |
4481 | ||
4482 | module_init(ipmi_init_msghandler_mod); | |
4483 | MODULE_LICENSE("GPL"); | |
1fdd75bd | 4484 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
c70d7499 CM |
4485 | MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI" |
4486 | " interface."); | |
1fdd75bd | 4487 | MODULE_VERSION(IPMI_DRIVER_VERSION); |