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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 | 37 | #include <linux/poll.h> |
a99bbaf5 | 38 | #include <linux/sched.h> |
07412736 | 39 | #include <linux/seq_file.h> |
1da177e4 | 40 | #include <linux/spinlock.h> |
d6dfd131 | 41 | #include <linux/mutex.h> |
1da177e4 LT |
42 | #include <linux/slab.h> |
43 | #include <linux/ipmi.h> | |
44 | #include <linux/ipmi_smi.h> | |
45 | #include <linux/notifier.h> | |
46 | #include <linux/init.h> | |
47 | #include <linux/proc_fs.h> | |
393d2cc3 | 48 | #include <linux/rcupdate.h> |
1da177e4 LT |
49 | |
50 | #define PFX "IPMI message handler: " | |
1fdd75bd | 51 | |
f7caa1b5 | 52 | #define IPMI_DRIVER_VERSION "39.2" |
1da177e4 LT |
53 | |
54 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void); | |
55 | static int ipmi_init_msghandler(void); | |
56 | ||
0c8204b3 | 57 | static int initialized; |
1da177e4 | 58 | |
3b625943 | 59 | #ifdef CONFIG_PROC_FS |
0c8204b3 | 60 | static struct proc_dir_entry *proc_ipmi_root; |
3b625943 | 61 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 62 | |
b9675136 CM |
63 | /* Remain in auto-maintenance mode for this amount of time (in ms). */ |
64 | #define IPMI_MAINTENANCE_MODE_TIMEOUT 30000 | |
65 | ||
1da177e4 LT |
66 | #define MAX_EVENTS_IN_QUEUE 25 |
67 | ||
c70d7499 CM |
68 | /* |
69 | * Don't let a message sit in a queue forever, always time it with at lest | |
70 | * the max message timer. This is in milliseconds. | |
71 | */ | |
1da177e4 LT |
72 | #define MAX_MSG_TIMEOUT 60000 |
73 | ||
393d2cc3 CM |
74 | /* |
75 | * The main "user" data structure. | |
76 | */ | |
c70d7499 | 77 | struct ipmi_user { |
1da177e4 LT |
78 | struct list_head link; |
79 | ||
393d2cc3 CM |
80 | /* Set to "0" when the user is destroyed. */ |
81 | int valid; | |
82 | ||
83 | struct kref refcount; | |
84 | ||
1da177e4 LT |
85 | /* The upper layer that handles receive messages. */ |
86 | struct ipmi_user_hndl *handler; | |
87 | void *handler_data; | |
88 | ||
89 | /* The interface this user is bound to. */ | |
90 | ipmi_smi_t intf; | |
91 | ||
92 | /* Does this interface receive IPMI events? */ | |
93 | int gets_events; | |
94 | }; | |
95 | ||
c70d7499 | 96 | struct cmd_rcvr { |
1da177e4 LT |
97 | struct list_head link; |
98 | ||
99 | ipmi_user_t user; | |
100 | unsigned char netfn; | |
101 | unsigned char cmd; | |
c69c3127 | 102 | unsigned int chans; |
393d2cc3 CM |
103 | |
104 | /* | |
105 | * This is used to form a linked lised during mass deletion. | |
106 | * Since this is in an RCU list, we cannot use the link above | |
107 | * or change any data until the RCU period completes. So we | |
108 | * use this next variable during mass deletion so we can have | |
109 | * a list and don't have to wait and restart the search on | |
c70d7499 CM |
110 | * every individual deletion of a command. |
111 | */ | |
393d2cc3 | 112 | struct cmd_rcvr *next; |
1da177e4 LT |
113 | }; |
114 | ||
c70d7499 | 115 | struct seq_table { |
1da177e4 LT |
116 | unsigned int inuse : 1; |
117 | unsigned int broadcast : 1; | |
118 | ||
119 | unsigned long timeout; | |
120 | unsigned long orig_timeout; | |
121 | unsigned int retries_left; | |
122 | ||
c70d7499 CM |
123 | /* |
124 | * To verify on an incoming send message response that this is | |
125 | * the message that the response is for, we keep a sequence id | |
126 | * and increment it every time we send a message. | |
127 | */ | |
1da177e4 LT |
128 | long seqid; |
129 | ||
c70d7499 CM |
130 | /* |
131 | * This is held so we can properly respond to the message on a | |
132 | * timeout, and it is used to hold the temporary data for | |
133 | * retransmission, too. | |
134 | */ | |
1da177e4 LT |
135 | struct ipmi_recv_msg *recv_msg; |
136 | }; | |
137 | ||
c70d7499 CM |
138 | /* |
139 | * Store the information in a msgid (long) to allow us to find a | |
140 | * sequence table entry from the msgid. | |
141 | */ | |
1da177e4 LT |
142 | #define STORE_SEQ_IN_MSGID(seq, seqid) (((seq&0xff)<<26) | (seqid&0x3ffffff)) |
143 | ||
144 | #define GET_SEQ_FROM_MSGID(msgid, seq, seqid) \ | |
145 | do { \ | |
146 | seq = ((msgid >> 26) & 0x3f); \ | |
147 | seqid = (msgid & 0x3fffff); \ | |
c70d7499 | 148 | } while (0) |
1da177e4 LT |
149 | |
150 | #define NEXT_SEQID(seqid) (((seqid) + 1) & 0x3fffff) | |
151 | ||
c70d7499 | 152 | struct ipmi_channel { |
1da177e4 LT |
153 | unsigned char medium; |
154 | unsigned char protocol; | |
c14979b9 | 155 | |
c70d7499 CM |
156 | /* |
157 | * My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, | |
158 | * but may be changed by the user. | |
159 | */ | |
c14979b9 CM |
160 | unsigned char address; |
161 | ||
c70d7499 CM |
162 | /* |
163 | * My LUN. This should generally stay the SMS LUN, but just in | |
164 | * case... | |
165 | */ | |
c14979b9 | 166 | unsigned char lun; |
1da177e4 LT |
167 | }; |
168 | ||
3b625943 | 169 | #ifdef CONFIG_PROC_FS |
c70d7499 | 170 | struct ipmi_proc_entry { |
1da177e4 LT |
171 | char *name; |
172 | struct ipmi_proc_entry *next; | |
173 | }; | |
3b625943 | 174 | #endif |
1da177e4 | 175 | |
c70d7499 | 176 | struct bmc_device { |
50c812b2 CM |
177 | struct platform_device *dev; |
178 | struct ipmi_device_id id; | |
179 | unsigned char guid[16]; | |
180 | int guid_set; | |
181 | ||
182 | struct kref refcount; | |
183 | ||
184 | /* bmc device attributes */ | |
185 | struct device_attribute device_id_attr; | |
186 | struct device_attribute provides_dev_sdrs_attr; | |
187 | struct device_attribute revision_attr; | |
188 | struct device_attribute firmware_rev_attr; | |
189 | struct device_attribute version_attr; | |
190 | struct device_attribute add_dev_support_attr; | |
191 | struct device_attribute manufacturer_id_attr; | |
192 | struct device_attribute product_id_attr; | |
193 | struct device_attribute guid_attr; | |
194 | struct device_attribute aux_firmware_rev_attr; | |
195 | }; | |
196 | ||
b2655f26 KB |
197 | /* |
198 | * Various statistics for IPMI, these index stats[] in the ipmi_smi | |
199 | * structure. | |
200 | */ | |
73f2bdb9 CM |
201 | enum ipmi_stat_indexes { |
202 | /* Commands we got from the user that were invalid. */ | |
203 | IPMI_STAT_sent_invalid_commands = 0, | |
b2655f26 | 204 | |
73f2bdb9 CM |
205 | /* Commands we sent to the MC. */ |
206 | IPMI_STAT_sent_local_commands, | |
b2655f26 | 207 | |
73f2bdb9 CM |
208 | /* Responses from the MC that were delivered to a user. */ |
209 | IPMI_STAT_handled_local_responses, | |
b2655f26 | 210 | |
73f2bdb9 CM |
211 | /* Responses from the MC that were not delivered to a user. */ |
212 | IPMI_STAT_unhandled_local_responses, | |
b2655f26 | 213 | |
73f2bdb9 CM |
214 | /* Commands we sent out to the IPMB bus. */ |
215 | IPMI_STAT_sent_ipmb_commands, | |
b2655f26 | 216 | |
73f2bdb9 CM |
217 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
218 | IPMI_STAT_sent_ipmb_command_errs, | |
b2655f26 | 219 | |
73f2bdb9 CM |
220 | /* Each retransmit increments this count. */ |
221 | IPMI_STAT_retransmitted_ipmb_commands, | |
b2655f26 | 222 | |
73f2bdb9 CM |
223 | /* |
224 | * When a message times out (runs out of retransmits) this is | |
225 | * incremented. | |
226 | */ | |
227 | IPMI_STAT_timed_out_ipmb_commands, | |
b2655f26 | 228 | |
73f2bdb9 CM |
229 | /* |
230 | * This is like above, but for broadcasts. Broadcasts are | |
231 | * *not* included in the above count (they are expected to | |
232 | * time out). | |
233 | */ | |
234 | IPMI_STAT_timed_out_ipmb_broadcasts, | |
b2655f26 | 235 | |
73f2bdb9 CM |
236 | /* Responses I have sent to the IPMB bus. */ |
237 | IPMI_STAT_sent_ipmb_responses, | |
b2655f26 | 238 | |
73f2bdb9 CM |
239 | /* The response was delivered to the user. */ |
240 | IPMI_STAT_handled_ipmb_responses, | |
b2655f26 | 241 | |
73f2bdb9 CM |
242 | /* The response had invalid data in it. */ |
243 | IPMI_STAT_invalid_ipmb_responses, | |
b2655f26 | 244 | |
73f2bdb9 CM |
245 | /* The response didn't have anyone waiting for it. */ |
246 | IPMI_STAT_unhandled_ipmb_responses, | |
b2655f26 | 247 | |
73f2bdb9 CM |
248 | /* Commands we sent out to the IPMB bus. */ |
249 | IPMI_STAT_sent_lan_commands, | |
b2655f26 | 250 | |
73f2bdb9 CM |
251 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
252 | IPMI_STAT_sent_lan_command_errs, | |
b2655f26 | 253 | |
73f2bdb9 CM |
254 | /* Each retransmit increments this count. */ |
255 | IPMI_STAT_retransmitted_lan_commands, | |
b2655f26 | 256 | |
73f2bdb9 CM |
257 | /* |
258 | * When a message times out (runs out of retransmits) this is | |
259 | * incremented. | |
260 | */ | |
261 | IPMI_STAT_timed_out_lan_commands, | |
262 | ||
263 | /* Responses I have sent to the IPMB bus. */ | |
264 | IPMI_STAT_sent_lan_responses, | |
b2655f26 | 265 | |
73f2bdb9 CM |
266 | /* The response was delivered to the user. */ |
267 | IPMI_STAT_handled_lan_responses, | |
b2655f26 | 268 | |
73f2bdb9 CM |
269 | /* The response had invalid data in it. */ |
270 | IPMI_STAT_invalid_lan_responses, | |
b2655f26 | 271 | |
73f2bdb9 CM |
272 | /* The response didn't have anyone waiting for it. */ |
273 | IPMI_STAT_unhandled_lan_responses, | |
b2655f26 | 274 | |
73f2bdb9 CM |
275 | /* The command was delivered to the user. */ |
276 | IPMI_STAT_handled_commands, | |
b2655f26 | 277 | |
73f2bdb9 CM |
278 | /* The command had invalid data in it. */ |
279 | IPMI_STAT_invalid_commands, | |
b2655f26 | 280 | |
73f2bdb9 CM |
281 | /* The command didn't have anyone waiting for it. */ |
282 | IPMI_STAT_unhandled_commands, | |
b2655f26 | 283 | |
73f2bdb9 CM |
284 | /* Invalid data in an event. */ |
285 | IPMI_STAT_invalid_events, | |
b2655f26 | 286 | |
73f2bdb9 CM |
287 | /* Events that were received with the proper format. */ |
288 | IPMI_STAT_events, | |
b2655f26 | 289 | |
25176ed6 CM |
290 | /* Retransmissions on IPMB that failed. */ |
291 | IPMI_STAT_dropped_rexmit_ipmb_commands, | |
292 | ||
293 | /* Retransmissions on LAN that failed. */ | |
294 | IPMI_STAT_dropped_rexmit_lan_commands, | |
b2655f26 | 295 | |
73f2bdb9 CM |
296 | /* This *must* remain last, add new values above this. */ |
297 | IPMI_NUM_STATS | |
298 | }; | |
b2655f26 KB |
299 | |
300 | ||
1da177e4 | 301 | #define IPMI_IPMB_NUM_SEQ 64 |
c14979b9 | 302 | #define IPMI_MAX_CHANNELS 16 |
c70d7499 | 303 | struct ipmi_smi { |
1da177e4 LT |
304 | /* What interface number are we? */ |
305 | int intf_num; | |
306 | ||
393d2cc3 CM |
307 | struct kref refcount; |
308 | ||
bca0324d CM |
309 | /* Used for a list of interfaces. */ |
310 | struct list_head link; | |
311 | ||
c70d7499 CM |
312 | /* |
313 | * The list of upper layers that are using me. seq_lock | |
314 | * protects this. | |
315 | */ | |
393d2cc3 | 316 | struct list_head users; |
1da177e4 | 317 | |
b2c03941 CM |
318 | /* Information to supply to users. */ |
319 | unsigned char ipmi_version_major; | |
320 | unsigned char ipmi_version_minor; | |
321 | ||
1da177e4 LT |
322 | /* Used for wake ups at startup. */ |
323 | wait_queue_head_t waitq; | |
324 | ||
50c812b2 CM |
325 | struct bmc_device *bmc; |
326 | char *my_dev_name; | |
759643b8 | 327 | char *sysfs_name; |
1da177e4 | 328 | |
c70d7499 CM |
329 | /* |
330 | * This is the lower-layer's sender routine. Note that you | |
b2c03941 CM |
331 | * must either be holding the ipmi_interfaces_mutex or be in |
332 | * an umpreemptible region to use this. You must fetch the | |
c70d7499 CM |
333 | * value into a local variable and make sure it is not NULL. |
334 | */ | |
1da177e4 LT |
335 | struct ipmi_smi_handlers *handlers; |
336 | void *send_info; | |
337 | ||
3b625943 | 338 | #ifdef CONFIG_PROC_FS |
ac019151 CM |
339 | /* A list of proc entries for this interface. */ |
340 | struct mutex proc_entry_lock; | |
1da177e4 | 341 | struct ipmi_proc_entry *proc_entries; |
3b625943 | 342 | #endif |
1da177e4 | 343 | |
50c812b2 CM |
344 | /* Driver-model device for the system interface. */ |
345 | struct device *si_dev; | |
346 | ||
c70d7499 CM |
347 | /* |
348 | * A table of sequence numbers for this interface. We use the | |
349 | * sequence numbers for IPMB messages that go out of the | |
350 | * interface to match them up with their responses. A routine | |
351 | * is called periodically to time the items in this list. | |
352 | */ | |
1da177e4 LT |
353 | spinlock_t seq_lock; |
354 | struct seq_table seq_table[IPMI_IPMB_NUM_SEQ]; | |
355 | int curr_seq; | |
356 | ||
c70d7499 CM |
357 | /* |
358 | * Messages that were delayed for some reason (out of memory, | |
359 | * for instance), will go in here to be processed later in a | |
360 | * periodic timer interrupt. | |
361 | */ | |
1da177e4 LT |
362 | spinlock_t waiting_msgs_lock; |
363 | struct list_head waiting_msgs; | |
364 | ||
c70d7499 CM |
365 | /* |
366 | * The list of command receivers that are registered for commands | |
367 | * on this interface. | |
368 | */ | |
d6dfd131 | 369 | struct mutex cmd_rcvrs_mutex; |
1da177e4 LT |
370 | struct list_head cmd_rcvrs; |
371 | ||
c70d7499 CM |
372 | /* |
373 | * Events that were queues because no one was there to receive | |
374 | * them. | |
375 | */ | |
1da177e4 LT |
376 | spinlock_t events_lock; /* For dealing with event stuff. */ |
377 | struct list_head waiting_events; | |
378 | unsigned int waiting_events_count; /* How many events in queue? */ | |
87ebd06f CM |
379 | char delivering_events; |
380 | char event_msg_printed; | |
1da177e4 | 381 | |
c70d7499 CM |
382 | /* |
383 | * The event receiver for my BMC, only really used at panic | |
384 | * shutdown as a place to store this. | |
385 | */ | |
1da177e4 LT |
386 | unsigned char event_receiver; |
387 | unsigned char event_receiver_lun; | |
388 | unsigned char local_sel_device; | |
389 | unsigned char local_event_generator; | |
390 | ||
b9675136 CM |
391 | /* For handling of maintenance mode. */ |
392 | int maintenance_mode; | |
393 | int maintenance_mode_enable; | |
394 | int auto_maintenance_timeout; | |
395 | spinlock_t maintenance_mode_lock; /* Used in a timer... */ | |
396 | ||
c70d7499 CM |
397 | /* |
398 | * A cheap hack, if this is non-null and a message to an | |
399 | * interface comes in with a NULL user, call this routine with | |
400 | * it. Note that the message will still be freed by the | |
401 | * caller. This only works on the system interface. | |
402 | */ | |
56a55ec6 | 403 | void (*null_user_handler)(ipmi_smi_t intf, struct ipmi_recv_msg *msg); |
1da177e4 | 404 | |
c70d7499 CM |
405 | /* |
406 | * When we are scanning the channels for an SMI, this will | |
407 | * tell which channel we are scanning. | |
408 | */ | |
1da177e4 LT |
409 | int curr_channel; |
410 | ||
411 | /* Channel information */ | |
412 | struct ipmi_channel channels[IPMI_MAX_CHANNELS]; | |
413 | ||
414 | /* Proc FS stuff. */ | |
415 | struct proc_dir_entry *proc_dir; | |
416 | char proc_dir_name[10]; | |
417 | ||
b2655f26 | 418 | atomic_t stats[IPMI_NUM_STATS]; |
5956dce1 KB |
419 | |
420 | /* | |
421 | * run_to_completion duplicate of smb_info, smi_info | |
422 | * and ipmi_serial_info structures. Used to decrease numbers of | |
423 | * parameters passed by "low" level IPMI code. | |
424 | */ | |
425 | int run_to_completion; | |
1da177e4 | 426 | }; |
50c812b2 | 427 | #define to_si_intf_from_dev(device) container_of(device, struct ipmi_smi, dev) |
1da177e4 | 428 | |
50c812b2 CM |
429 | /** |
430 | * The driver model view of the IPMI messaging driver. | |
431 | */ | |
fe2d5ffc DW |
432 | static struct platform_driver ipmidriver = { |
433 | .driver = { | |
434 | .name = "ipmi", | |
435 | .bus = &platform_bus_type | |
436 | } | |
50c812b2 CM |
437 | }; |
438 | static DEFINE_MUTEX(ipmidriver_mutex); | |
439 | ||
bed9759b | 440 | static LIST_HEAD(ipmi_interfaces); |
bca0324d | 441 | static DEFINE_MUTEX(ipmi_interfaces_mutex); |
1da177e4 | 442 | |
c70d7499 CM |
443 | /* |
444 | * List of watchers that want to know when smi's are added and deleted. | |
445 | */ | |
bed9759b | 446 | static LIST_HEAD(smi_watchers); |
b2c03941 | 447 | static DEFINE_MUTEX(smi_watchers_mutex); |
1da177e4 | 448 | |
393d2cc3 | 449 | |
b2655f26 KB |
450 | #define ipmi_inc_stat(intf, stat) \ |
451 | atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat]) | |
452 | #define ipmi_get_stat(intf, stat) \ | |
453 | ((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat])) | |
454 | ||
25176ed6 CM |
455 | static int is_lan_addr(struct ipmi_addr *addr) |
456 | { | |
457 | return addr->addr_type == IPMI_LAN_ADDR_TYPE; | |
458 | } | |
459 | ||
460 | static int is_ipmb_addr(struct ipmi_addr *addr) | |
461 | { | |
462 | return addr->addr_type == IPMI_IPMB_ADDR_TYPE; | |
463 | } | |
464 | ||
465 | static int is_ipmb_bcast_addr(struct ipmi_addr *addr) | |
466 | { | |
467 | return addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE; | |
468 | } | |
b2655f26 | 469 | |
393d2cc3 CM |
470 | static void free_recv_msg_list(struct list_head *q) |
471 | { | |
472 | struct ipmi_recv_msg *msg, *msg2; | |
473 | ||
474 | list_for_each_entry_safe(msg, msg2, q, link) { | |
475 | list_del(&msg->link); | |
476 | ipmi_free_recv_msg(msg); | |
477 | } | |
478 | } | |
479 | ||
f3ce6a0e CM |
480 | static void free_smi_msg_list(struct list_head *q) |
481 | { | |
482 | struct ipmi_smi_msg *msg, *msg2; | |
483 | ||
484 | list_for_each_entry_safe(msg, msg2, q, link) { | |
485 | list_del(&msg->link); | |
486 | ipmi_free_smi_msg(msg); | |
487 | } | |
488 | } | |
489 | ||
393d2cc3 CM |
490 | static void clean_up_interface_data(ipmi_smi_t intf) |
491 | { | |
492 | int i; | |
493 | struct cmd_rcvr *rcvr, *rcvr2; | |
393d2cc3 CM |
494 | struct list_head list; |
495 | ||
f3ce6a0e | 496 | free_smi_msg_list(&intf->waiting_msgs); |
393d2cc3 CM |
497 | free_recv_msg_list(&intf->waiting_events); |
498 | ||
78ba2faf CM |
499 | /* |
500 | * Wholesale remove all the entries from the list in the | |
501 | * interface and wait for RCU to know that none are in use. | |
502 | */ | |
d6dfd131 | 503 | mutex_lock(&intf->cmd_rcvrs_mutex); |
78ba2faf CM |
504 | INIT_LIST_HEAD(&list); |
505 | list_splice_init_rcu(&intf->cmd_rcvrs, &list, synchronize_rcu); | |
d6dfd131 | 506 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
507 | |
508 | list_for_each_entry_safe(rcvr, rcvr2, &list, link) | |
509 | kfree(rcvr); | |
510 | ||
511 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { | |
512 | if ((intf->seq_table[i].inuse) | |
c70d7499 | 513 | && (intf->seq_table[i].recv_msg)) |
393d2cc3 | 514 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
393d2cc3 CM |
515 | } |
516 | } | |
517 | ||
518 | static void intf_free(struct kref *ref) | |
519 | { | |
520 | ipmi_smi_t intf = container_of(ref, struct ipmi_smi, refcount); | |
521 | ||
522 | clean_up_interface_data(intf); | |
523 | kfree(intf); | |
524 | } | |
525 | ||
bca0324d | 526 | struct watcher_entry { |
b2c03941 CM |
527 | int intf_num; |
528 | ipmi_smi_t intf; | |
bca0324d | 529 | struct list_head link; |
bca0324d CM |
530 | }; |
531 | ||
1da177e4 LT |
532 | int ipmi_smi_watcher_register(struct ipmi_smi_watcher *watcher) |
533 | { | |
bca0324d | 534 | ipmi_smi_t intf; |
e381d1c4 | 535 | LIST_HEAD(to_deliver); |
bca0324d CM |
536 | struct watcher_entry *e, *e2; |
537 | ||
b2c03941 CM |
538 | mutex_lock(&smi_watchers_mutex); |
539 | ||
bca0324d CM |
540 | mutex_lock(&ipmi_interfaces_mutex); |
541 | ||
b2c03941 | 542 | /* Build a list of things to deliver. */ |
78ba2faf | 543 | list_for_each_entry(intf, &ipmi_interfaces, link) { |
bca0324d CM |
544 | if (intf->intf_num == -1) |
545 | continue; | |
546 | e = kmalloc(sizeof(*e), GFP_KERNEL); | |
547 | if (!e) | |
548 | goto out_err; | |
b2c03941 CM |
549 | kref_get(&intf->refcount); |
550 | e->intf = intf; | |
bca0324d CM |
551 | e->intf_num = intf->intf_num; |
552 | list_add_tail(&e->link, &to_deliver); | |
553 | } | |
1da177e4 | 554 | |
b2c03941 CM |
555 | /* We will succeed, so add it to the list. */ |
556 | list_add(&watcher->link, &smi_watchers); | |
bca0324d CM |
557 | |
558 | mutex_unlock(&ipmi_interfaces_mutex); | |
559 | ||
560 | list_for_each_entry_safe(e, e2, &to_deliver, link) { | |
561 | list_del(&e->link); | |
b2c03941 CM |
562 | watcher->new_smi(e->intf_num, e->intf->si_dev); |
563 | kref_put(&e->intf->refcount, intf_free); | |
bca0324d | 564 | kfree(e); |
1da177e4 | 565 | } |
bca0324d | 566 | |
b2c03941 | 567 | mutex_unlock(&smi_watchers_mutex); |
bca0324d | 568 | |
1da177e4 | 569 | return 0; |
bca0324d CM |
570 | |
571 | out_err: | |
b2c03941 CM |
572 | mutex_unlock(&ipmi_interfaces_mutex); |
573 | mutex_unlock(&smi_watchers_mutex); | |
bca0324d CM |
574 | list_for_each_entry_safe(e, e2, &to_deliver, link) { |
575 | list_del(&e->link); | |
b2c03941 | 576 | kref_put(&e->intf->refcount, intf_free); |
bca0324d CM |
577 | kfree(e); |
578 | } | |
579 | return -ENOMEM; | |
1da177e4 | 580 | } |
c70d7499 | 581 | EXPORT_SYMBOL(ipmi_smi_watcher_register); |
1da177e4 LT |
582 | |
583 | int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher) | |
584 | { | |
b2c03941 | 585 | mutex_lock(&smi_watchers_mutex); |
1da177e4 | 586 | list_del(&(watcher->link)); |
b2c03941 | 587 | mutex_unlock(&smi_watchers_mutex); |
1da177e4 LT |
588 | return 0; |
589 | } | |
c70d7499 | 590 | EXPORT_SYMBOL(ipmi_smi_watcher_unregister); |
1da177e4 | 591 | |
b2c03941 CM |
592 | /* |
593 | * Must be called with smi_watchers_mutex held. | |
594 | */ | |
1da177e4 | 595 | static void |
50c812b2 | 596 | call_smi_watchers(int i, struct device *dev) |
1da177e4 LT |
597 | { |
598 | struct ipmi_smi_watcher *w; | |
599 | ||
1da177e4 LT |
600 | list_for_each_entry(w, &smi_watchers, link) { |
601 | if (try_module_get(w->owner)) { | |
50c812b2 | 602 | w->new_smi(i, dev); |
1da177e4 LT |
603 | module_put(w->owner); |
604 | } | |
605 | } | |
1da177e4 LT |
606 | } |
607 | ||
608 | static int | |
609 | ipmi_addr_equal(struct ipmi_addr *addr1, struct ipmi_addr *addr2) | |
610 | { | |
611 | if (addr1->addr_type != addr2->addr_type) | |
612 | return 0; | |
613 | ||
614 | if (addr1->channel != addr2->channel) | |
615 | return 0; | |
616 | ||
617 | if (addr1->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
618 | struct ipmi_system_interface_addr *smi_addr1 | |
619 | = (struct ipmi_system_interface_addr *) addr1; | |
620 | struct ipmi_system_interface_addr *smi_addr2 | |
621 | = (struct ipmi_system_interface_addr *) addr2; | |
622 | return (smi_addr1->lun == smi_addr2->lun); | |
623 | } | |
624 | ||
25176ed6 | 625 | if (is_ipmb_addr(addr1) || is_ipmb_bcast_addr(addr1)) { |
1da177e4 LT |
626 | struct ipmi_ipmb_addr *ipmb_addr1 |
627 | = (struct ipmi_ipmb_addr *) addr1; | |
628 | struct ipmi_ipmb_addr *ipmb_addr2 | |
629 | = (struct ipmi_ipmb_addr *) addr2; | |
630 | ||
631 | return ((ipmb_addr1->slave_addr == ipmb_addr2->slave_addr) | |
632 | && (ipmb_addr1->lun == ipmb_addr2->lun)); | |
633 | } | |
634 | ||
25176ed6 | 635 | if (is_lan_addr(addr1)) { |
1da177e4 LT |
636 | struct ipmi_lan_addr *lan_addr1 |
637 | = (struct ipmi_lan_addr *) addr1; | |
638 | struct ipmi_lan_addr *lan_addr2 | |
639 | = (struct ipmi_lan_addr *) addr2; | |
640 | ||
641 | return ((lan_addr1->remote_SWID == lan_addr2->remote_SWID) | |
642 | && (lan_addr1->local_SWID == lan_addr2->local_SWID) | |
643 | && (lan_addr1->session_handle | |
644 | == lan_addr2->session_handle) | |
645 | && (lan_addr1->lun == lan_addr2->lun)); | |
646 | } | |
647 | ||
648 | return 1; | |
649 | } | |
650 | ||
651 | int ipmi_validate_addr(struct ipmi_addr *addr, int len) | |
652 | { | |
c70d7499 | 653 | if (len < sizeof(struct ipmi_system_interface_addr)) |
1da177e4 | 654 | return -EINVAL; |
1da177e4 LT |
655 | |
656 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
657 | if (addr->channel != IPMI_BMC_CHANNEL) | |
658 | return -EINVAL; | |
659 | return 0; | |
660 | } | |
661 | ||
662 | if ((addr->channel == IPMI_BMC_CHANNEL) | |
12fc1d7b | 663 | || (addr->channel >= IPMI_MAX_CHANNELS) |
1da177e4 LT |
664 | || (addr->channel < 0)) |
665 | return -EINVAL; | |
666 | ||
25176ed6 | 667 | if (is_ipmb_addr(addr) || is_ipmb_bcast_addr(addr)) { |
c70d7499 | 668 | if (len < sizeof(struct ipmi_ipmb_addr)) |
1da177e4 | 669 | return -EINVAL; |
1da177e4 LT |
670 | return 0; |
671 | } | |
672 | ||
25176ed6 | 673 | if (is_lan_addr(addr)) { |
c70d7499 | 674 | if (len < sizeof(struct ipmi_lan_addr)) |
1da177e4 | 675 | return -EINVAL; |
1da177e4 LT |
676 | return 0; |
677 | } | |
678 | ||
679 | return -EINVAL; | |
680 | } | |
c70d7499 | 681 | EXPORT_SYMBOL(ipmi_validate_addr); |
1da177e4 LT |
682 | |
683 | unsigned int ipmi_addr_length(int addr_type) | |
684 | { | |
685 | if (addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
686 | return sizeof(struct ipmi_system_interface_addr); | |
687 | ||
688 | if ((addr_type == IPMI_IPMB_ADDR_TYPE) | |
c70d7499 | 689 | || (addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
1da177e4 | 690 | return sizeof(struct ipmi_ipmb_addr); |
1da177e4 LT |
691 | |
692 | if (addr_type == IPMI_LAN_ADDR_TYPE) | |
693 | return sizeof(struct ipmi_lan_addr); | |
694 | ||
695 | return 0; | |
696 | } | |
c70d7499 | 697 | EXPORT_SYMBOL(ipmi_addr_length); |
1da177e4 LT |
698 | |
699 | static void deliver_response(struct ipmi_recv_msg *msg) | |
700 | { | |
8a3628d5 | 701 | if (!msg->user) { |
56a55ec6 | 702 | ipmi_smi_t intf = msg->user_msg_data; |
56a55ec6 CM |
703 | |
704 | /* Special handling for NULL users. */ | |
705 | if (intf->null_user_handler) { | |
706 | intf->null_user_handler(intf, msg); | |
b2655f26 | 707 | ipmi_inc_stat(intf, handled_local_responses); |
56a55ec6 CM |
708 | } else { |
709 | /* No handler, so give up. */ | |
b2655f26 | 710 | ipmi_inc_stat(intf, unhandled_local_responses); |
56a55ec6 CM |
711 | } |
712 | ipmi_free_recv_msg(msg); | |
713 | } else { | |
393d2cc3 CM |
714 | ipmi_user_t user = msg->user; |
715 | user->handler->ipmi_recv_hndl(msg, user->handler_data); | |
56a55ec6 | 716 | } |
1da177e4 LT |
717 | } |
718 | ||
b2c03941 CM |
719 | static void |
720 | deliver_err_response(struct ipmi_recv_msg *msg, int err) | |
721 | { | |
722 | msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
723 | msg->msg_data[0] = err; | |
724 | msg->msg.netfn |= 1; /* Convert to a response. */ | |
725 | msg->msg.data_len = 1; | |
726 | msg->msg.data = msg->msg_data; | |
727 | deliver_response(msg); | |
728 | } | |
729 | ||
c70d7499 CM |
730 | /* |
731 | * Find the next sequence number not being used and add the given | |
732 | * message with the given timeout to the sequence table. This must be | |
733 | * called with the interface's seq_lock held. | |
734 | */ | |
1da177e4 LT |
735 | static int intf_next_seq(ipmi_smi_t intf, |
736 | struct ipmi_recv_msg *recv_msg, | |
737 | unsigned long timeout, | |
738 | int retries, | |
739 | int broadcast, | |
740 | unsigned char *seq, | |
741 | long *seqid) | |
742 | { | |
743 | int rv = 0; | |
744 | unsigned int i; | |
745 | ||
c70d7499 CM |
746 | for (i = intf->curr_seq; (i+1)%IPMI_IPMB_NUM_SEQ != intf->curr_seq; |
747 | i = (i+1)%IPMI_IPMB_NUM_SEQ) { | |
8a3628d5 | 748 | if (!intf->seq_table[i].inuse) |
1da177e4 LT |
749 | break; |
750 | } | |
751 | ||
8a3628d5 | 752 | if (!intf->seq_table[i].inuse) { |
1da177e4 LT |
753 | intf->seq_table[i].recv_msg = recv_msg; |
754 | ||
c70d7499 CM |
755 | /* |
756 | * Start with the maximum timeout, when the send response | |
757 | * comes in we will start the real timer. | |
758 | */ | |
1da177e4 LT |
759 | intf->seq_table[i].timeout = MAX_MSG_TIMEOUT; |
760 | intf->seq_table[i].orig_timeout = timeout; | |
761 | intf->seq_table[i].retries_left = retries; | |
762 | intf->seq_table[i].broadcast = broadcast; | |
763 | intf->seq_table[i].inuse = 1; | |
764 | intf->seq_table[i].seqid = NEXT_SEQID(intf->seq_table[i].seqid); | |
765 | *seq = i; | |
766 | *seqid = intf->seq_table[i].seqid; | |
767 | intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ; | |
768 | } else { | |
769 | rv = -EAGAIN; | |
770 | } | |
c70d7499 | 771 | |
1da177e4 LT |
772 | return rv; |
773 | } | |
774 | ||
c70d7499 CM |
775 | /* |
776 | * Return the receive message for the given sequence number and | |
777 | * release the sequence number so it can be reused. Some other data | |
778 | * is passed in to be sure the message matches up correctly (to help | |
779 | * guard against message coming in after their timeout and the | |
780 | * sequence number being reused). | |
781 | */ | |
1da177e4 LT |
782 | static int intf_find_seq(ipmi_smi_t intf, |
783 | unsigned char seq, | |
784 | short channel, | |
785 | unsigned char cmd, | |
786 | unsigned char netfn, | |
787 | struct ipmi_addr *addr, | |
788 | struct ipmi_recv_msg **recv_msg) | |
789 | { | |
790 | int rv = -ENODEV; | |
791 | unsigned long flags; | |
792 | ||
793 | if (seq >= IPMI_IPMB_NUM_SEQ) | |
794 | return -EINVAL; | |
795 | ||
796 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
797 | if (intf->seq_table[seq].inuse) { | |
798 | struct ipmi_recv_msg *msg = intf->seq_table[seq].recv_msg; | |
799 | ||
c70d7499 CM |
800 | if ((msg->addr.channel == channel) && (msg->msg.cmd == cmd) |
801 | && (msg->msg.netfn == netfn) | |
802 | && (ipmi_addr_equal(addr, &(msg->addr)))) { | |
1da177e4 LT |
803 | *recv_msg = msg; |
804 | intf->seq_table[seq].inuse = 0; | |
805 | rv = 0; | |
806 | } | |
807 | } | |
808 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
809 | ||
810 | return rv; | |
811 | } | |
812 | ||
813 | ||
814 | /* Start the timer for a specific sequence table entry. */ | |
815 | static int intf_start_seq_timer(ipmi_smi_t intf, | |
816 | long msgid) | |
817 | { | |
818 | int rv = -ENODEV; | |
819 | unsigned long flags; | |
820 | unsigned char seq; | |
821 | unsigned long seqid; | |
822 | ||
823 | ||
824 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); | |
825 | ||
826 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
c70d7499 CM |
827 | /* |
828 | * We do this verification because the user can be deleted | |
829 | * while a message is outstanding. | |
830 | */ | |
1da177e4 | 831 | if ((intf->seq_table[seq].inuse) |
c70d7499 | 832 | && (intf->seq_table[seq].seqid == seqid)) { |
1da177e4 LT |
833 | struct seq_table *ent = &(intf->seq_table[seq]); |
834 | ent->timeout = ent->orig_timeout; | |
835 | rv = 0; | |
836 | } | |
837 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
838 | ||
839 | return rv; | |
840 | } | |
841 | ||
842 | /* Got an error for the send message for a specific sequence number. */ | |
843 | static int intf_err_seq(ipmi_smi_t intf, | |
844 | long msgid, | |
845 | unsigned int err) | |
846 | { | |
847 | int rv = -ENODEV; | |
848 | unsigned long flags; | |
849 | unsigned char seq; | |
850 | unsigned long seqid; | |
851 | struct ipmi_recv_msg *msg = NULL; | |
852 | ||
853 | ||
854 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); | |
855 | ||
856 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
c70d7499 CM |
857 | /* |
858 | * We do this verification because the user can be deleted | |
859 | * while a message is outstanding. | |
860 | */ | |
1da177e4 | 861 | if ((intf->seq_table[seq].inuse) |
c70d7499 | 862 | && (intf->seq_table[seq].seqid == seqid)) { |
1da177e4 LT |
863 | struct seq_table *ent = &(intf->seq_table[seq]); |
864 | ||
865 | ent->inuse = 0; | |
866 | msg = ent->recv_msg; | |
867 | rv = 0; | |
868 | } | |
869 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
870 | ||
b2c03941 CM |
871 | if (msg) |
872 | deliver_err_response(msg, err); | |
1da177e4 LT |
873 | |
874 | return rv; | |
875 | } | |
876 | ||
877 | ||
878 | int ipmi_create_user(unsigned int if_num, | |
879 | struct ipmi_user_hndl *handler, | |
880 | void *handler_data, | |
881 | ipmi_user_t *user) | |
882 | { | |
883 | unsigned long flags; | |
884 | ipmi_user_t new_user; | |
885 | int rv = 0; | |
886 | ipmi_smi_t intf; | |
887 | ||
c70d7499 CM |
888 | /* |
889 | * There is no module usecount here, because it's not | |
890 | * required. Since this can only be used by and called from | |
891 | * other modules, they will implicitly use this module, and | |
892 | * thus this can't be removed unless the other modules are | |
893 | * removed. | |
894 | */ | |
1da177e4 LT |
895 | |
896 | if (handler == NULL) | |
897 | return -EINVAL; | |
898 | ||
c70d7499 CM |
899 | /* |
900 | * Make sure the driver is actually initialized, this handles | |
901 | * problems with initialization order. | |
902 | */ | |
1da177e4 LT |
903 | if (!initialized) { |
904 | rv = ipmi_init_msghandler(); | |
905 | if (rv) | |
906 | return rv; | |
907 | ||
c70d7499 CM |
908 | /* |
909 | * The init code doesn't return an error if it was turned | |
910 | * off, but it won't initialize. Check that. | |
911 | */ | |
1da177e4 LT |
912 | if (!initialized) |
913 | return -ENODEV; | |
914 | } | |
915 | ||
916 | new_user = kmalloc(sizeof(*new_user), GFP_KERNEL); | |
8a3628d5 | 917 | if (!new_user) |
1da177e4 LT |
918 | return -ENOMEM; |
919 | ||
b2c03941 | 920 | mutex_lock(&ipmi_interfaces_mutex); |
bca0324d CM |
921 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
922 | if (intf->intf_num == if_num) | |
923 | goto found; | |
1da177e4 | 924 | } |
b2c03941 | 925 | /* Not found, return an error */ |
bca0324d CM |
926 | rv = -EINVAL; |
927 | goto out_kfree; | |
1da177e4 | 928 | |
bca0324d | 929 | found: |
393d2cc3 CM |
930 | /* Note that each existing user holds a refcount to the interface. */ |
931 | kref_get(&intf->refcount); | |
1da177e4 | 932 | |
393d2cc3 | 933 | kref_init(&new_user->refcount); |
1da177e4 LT |
934 | new_user->handler = handler; |
935 | new_user->handler_data = handler_data; | |
936 | new_user->intf = intf; | |
937 | new_user->gets_events = 0; | |
938 | ||
939 | if (!try_module_get(intf->handlers->owner)) { | |
940 | rv = -ENODEV; | |
5c98d29a | 941 | goto out_kref; |
1da177e4 LT |
942 | } |
943 | ||
944 | if (intf->handlers->inc_usecount) { | |
945 | rv = intf->handlers->inc_usecount(intf->send_info); | |
946 | if (rv) { | |
947 | module_put(intf->handlers->owner); | |
5c98d29a | 948 | goto out_kref; |
1da177e4 LT |
949 | } |
950 | } | |
951 | ||
c70d7499 CM |
952 | /* |
953 | * Hold the lock so intf->handlers is guaranteed to be good | |
954 | * until now | |
955 | */ | |
b2c03941 CM |
956 | mutex_unlock(&ipmi_interfaces_mutex); |
957 | ||
393d2cc3 CM |
958 | new_user->valid = 1; |
959 | spin_lock_irqsave(&intf->seq_lock, flags); | |
960 | list_add_rcu(&new_user->link, &intf->users); | |
961 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
962 | *user = new_user; | |
963 | return 0; | |
1da177e4 | 964 | |
5c98d29a | 965 | out_kref: |
393d2cc3 | 966 | kref_put(&intf->refcount, intf_free); |
5c98d29a | 967 | out_kfree: |
b2c03941 | 968 | mutex_unlock(&ipmi_interfaces_mutex); |
5c98d29a | 969 | kfree(new_user); |
1da177e4 LT |
970 | return rv; |
971 | } | |
c70d7499 | 972 | EXPORT_SYMBOL(ipmi_create_user); |
1da177e4 | 973 | |
16f4232c ZY |
974 | int ipmi_get_smi_info(int if_num, struct ipmi_smi_info *data) |
975 | { | |
976 | int rv = 0; | |
977 | ipmi_smi_t intf; | |
978 | struct ipmi_smi_handlers *handlers; | |
979 | ||
980 | mutex_lock(&ipmi_interfaces_mutex); | |
981 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
982 | if (intf->intf_num == if_num) | |
983 | goto found; | |
984 | } | |
985 | /* Not found, return an error */ | |
986 | rv = -EINVAL; | |
987 | mutex_unlock(&ipmi_interfaces_mutex); | |
988 | return rv; | |
989 | ||
990 | found: | |
991 | handlers = intf->handlers; | |
992 | rv = -ENOSYS; | |
993 | if (handlers->get_smi_info) | |
994 | rv = handlers->get_smi_info(intf->send_info, data); | |
995 | mutex_unlock(&ipmi_interfaces_mutex); | |
996 | ||
997 | return rv; | |
998 | } | |
999 | EXPORT_SYMBOL(ipmi_get_smi_info); | |
1000 | ||
393d2cc3 CM |
1001 | static void free_user(struct kref *ref) |
1002 | { | |
1003 | ipmi_user_t user = container_of(ref, struct ipmi_user, refcount); | |
1004 | kfree(user); | |
1005 | } | |
1006 | ||
1007 | int ipmi_destroy_user(ipmi_user_t user) | |
1da177e4 | 1008 | { |
393d2cc3 | 1009 | ipmi_smi_t intf = user->intf; |
1da177e4 LT |
1010 | int i; |
1011 | unsigned long flags; | |
393d2cc3 | 1012 | struct cmd_rcvr *rcvr; |
393d2cc3 | 1013 | struct cmd_rcvr *rcvrs = NULL; |
1da177e4 | 1014 | |
8a3628d5 | 1015 | user->valid = 0; |
1da177e4 | 1016 | |
393d2cc3 CM |
1017 | /* Remove the user from the interface's sequence table. */ |
1018 | spin_lock_irqsave(&intf->seq_lock, flags); | |
1019 | list_del_rcu(&user->link); | |
1da177e4 | 1020 | |
e8b33617 | 1021 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
393d2cc3 | 1022 | if (intf->seq_table[i].inuse |
c70d7499 | 1023 | && (intf->seq_table[i].recv_msg->user == user)) { |
393d2cc3 | 1024 | intf->seq_table[i].inuse = 0; |
b2c03941 | 1025 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
1da177e4 LT |
1026 | } |
1027 | } | |
393d2cc3 CM |
1028 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
1029 | ||
1030 | /* | |
1031 | * Remove the user from the command receiver's table. First | |
1032 | * we build a list of everything (not using the standard link, | |
1033 | * since other things may be using it till we do | |
1034 | * synchronize_rcu()) then free everything in that list. | |
1035 | */ | |
d6dfd131 | 1036 | mutex_lock(&intf->cmd_rcvrs_mutex); |
066bb8d0 | 1037 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
1da177e4 | 1038 | if (rcvr->user == user) { |
393d2cc3 CM |
1039 | list_del_rcu(&rcvr->link); |
1040 | rcvr->next = rcvrs; | |
1041 | rcvrs = rcvr; | |
1da177e4 LT |
1042 | } |
1043 | } | |
d6dfd131 | 1044 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
1045 | synchronize_rcu(); |
1046 | while (rcvrs) { | |
1047 | rcvr = rcvrs; | |
1048 | rcvrs = rcvr->next; | |
1049 | kfree(rcvr); | |
1050 | } | |
1da177e4 | 1051 | |
b2c03941 CM |
1052 | mutex_lock(&ipmi_interfaces_mutex); |
1053 | if (intf->handlers) { | |
1054 | module_put(intf->handlers->owner); | |
1055 | if (intf->handlers->dec_usecount) | |
1056 | intf->handlers->dec_usecount(intf->send_info); | |
1057 | } | |
1058 | mutex_unlock(&ipmi_interfaces_mutex); | |
1da177e4 | 1059 | |
393d2cc3 | 1060 | kref_put(&intf->refcount, intf_free); |
1da177e4 | 1061 | |
393d2cc3 | 1062 | kref_put(&user->refcount, free_user); |
1da177e4 | 1063 | |
8a3628d5 | 1064 | return 0; |
1da177e4 | 1065 | } |
c70d7499 | 1066 | EXPORT_SYMBOL(ipmi_destroy_user); |
1da177e4 LT |
1067 | |
1068 | void ipmi_get_version(ipmi_user_t user, | |
1069 | unsigned char *major, | |
1070 | unsigned char *minor) | |
1071 | { | |
b2c03941 CM |
1072 | *major = user->intf->ipmi_version_major; |
1073 | *minor = user->intf->ipmi_version_minor; | |
1da177e4 | 1074 | } |
c70d7499 | 1075 | EXPORT_SYMBOL(ipmi_get_version); |
1da177e4 | 1076 | |
c14979b9 CM |
1077 | int ipmi_set_my_address(ipmi_user_t user, |
1078 | unsigned int channel, | |
1079 | unsigned char address) | |
1da177e4 | 1080 | { |
c14979b9 CM |
1081 | if (channel >= IPMI_MAX_CHANNELS) |
1082 | return -EINVAL; | |
1083 | user->intf->channels[channel].address = address; | |
1084 | return 0; | |
1da177e4 | 1085 | } |
c70d7499 | 1086 | EXPORT_SYMBOL(ipmi_set_my_address); |
1da177e4 | 1087 | |
c14979b9 CM |
1088 | int ipmi_get_my_address(ipmi_user_t user, |
1089 | unsigned int channel, | |
1090 | unsigned char *address) | |
1da177e4 | 1091 | { |
c14979b9 CM |
1092 | if (channel >= IPMI_MAX_CHANNELS) |
1093 | return -EINVAL; | |
1094 | *address = user->intf->channels[channel].address; | |
1095 | return 0; | |
1da177e4 | 1096 | } |
c70d7499 | 1097 | EXPORT_SYMBOL(ipmi_get_my_address); |
1da177e4 | 1098 | |
c14979b9 CM |
1099 | int ipmi_set_my_LUN(ipmi_user_t user, |
1100 | unsigned int channel, | |
1101 | unsigned char LUN) | |
1da177e4 | 1102 | { |
c14979b9 CM |
1103 | if (channel >= IPMI_MAX_CHANNELS) |
1104 | return -EINVAL; | |
1105 | user->intf->channels[channel].lun = LUN & 0x3; | |
1106 | return 0; | |
1da177e4 | 1107 | } |
c70d7499 | 1108 | EXPORT_SYMBOL(ipmi_set_my_LUN); |
1da177e4 | 1109 | |
c14979b9 CM |
1110 | int ipmi_get_my_LUN(ipmi_user_t user, |
1111 | unsigned int channel, | |
1112 | unsigned char *address) | |
1da177e4 | 1113 | { |
c14979b9 CM |
1114 | if (channel >= IPMI_MAX_CHANNELS) |
1115 | return -EINVAL; | |
1116 | *address = user->intf->channels[channel].lun; | |
1117 | return 0; | |
1da177e4 | 1118 | } |
c70d7499 | 1119 | EXPORT_SYMBOL(ipmi_get_my_LUN); |
1da177e4 | 1120 | |
b9675136 CM |
1121 | int ipmi_get_maintenance_mode(ipmi_user_t user) |
1122 | { | |
1123 | int mode; | |
1124 | unsigned long flags; | |
1125 | ||
1126 | spin_lock_irqsave(&user->intf->maintenance_mode_lock, flags); | |
1127 | mode = user->intf->maintenance_mode; | |
1128 | spin_unlock_irqrestore(&user->intf->maintenance_mode_lock, flags); | |
1129 | ||
1130 | return mode; | |
1131 | } | |
1132 | EXPORT_SYMBOL(ipmi_get_maintenance_mode); | |
1133 | ||
1134 | static void maintenance_mode_update(ipmi_smi_t intf) | |
1135 | { | |
1136 | if (intf->handlers->set_maintenance_mode) | |
1137 | intf->handlers->set_maintenance_mode( | |
1138 | intf->send_info, intf->maintenance_mode_enable); | |
1139 | } | |
1140 | ||
1141 | int ipmi_set_maintenance_mode(ipmi_user_t user, int mode) | |
1142 | { | |
1143 | int rv = 0; | |
1144 | unsigned long flags; | |
1145 | ipmi_smi_t intf = user->intf; | |
1146 | ||
1147 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); | |
1148 | if (intf->maintenance_mode != mode) { | |
1149 | switch (mode) { | |
1150 | case IPMI_MAINTENANCE_MODE_AUTO: | |
1151 | intf->maintenance_mode = mode; | |
1152 | intf->maintenance_mode_enable | |
1153 | = (intf->auto_maintenance_timeout > 0); | |
1154 | break; | |
1155 | ||
1156 | case IPMI_MAINTENANCE_MODE_OFF: | |
1157 | intf->maintenance_mode = mode; | |
1158 | intf->maintenance_mode_enable = 0; | |
1159 | break; | |
1160 | ||
1161 | case IPMI_MAINTENANCE_MODE_ON: | |
1162 | intf->maintenance_mode = mode; | |
1163 | intf->maintenance_mode_enable = 1; | |
1164 | break; | |
1165 | ||
1166 | default: | |
1167 | rv = -EINVAL; | |
1168 | goto out_unlock; | |
1169 | } | |
1170 | ||
1171 | maintenance_mode_update(intf); | |
1172 | } | |
1173 | out_unlock: | |
1174 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, flags); | |
1175 | ||
1176 | return rv; | |
1177 | } | |
1178 | EXPORT_SYMBOL(ipmi_set_maintenance_mode); | |
1179 | ||
1da177e4 LT |
1180 | int ipmi_set_gets_events(ipmi_user_t user, int val) |
1181 | { | |
393d2cc3 CM |
1182 | unsigned long flags; |
1183 | ipmi_smi_t intf = user->intf; | |
1184 | struct ipmi_recv_msg *msg, *msg2; | |
1185 | struct list_head msgs; | |
1da177e4 | 1186 | |
393d2cc3 CM |
1187 | INIT_LIST_HEAD(&msgs); |
1188 | ||
1189 | spin_lock_irqsave(&intf->events_lock, flags); | |
1da177e4 LT |
1190 | user->gets_events = val; |
1191 | ||
b2c03941 CM |
1192 | if (intf->delivering_events) |
1193 | /* | |
1194 | * Another thread is delivering events for this, so | |
1195 | * let it handle any new events. | |
1196 | */ | |
1197 | goto out; | |
1198 | ||
1199 | /* Deliver any queued events. */ | |
1200 | while (user->gets_events && !list_empty(&intf->waiting_events)) { | |
179e0917 AM |
1201 | list_for_each_entry_safe(msg, msg2, &intf->waiting_events, link) |
1202 | list_move_tail(&msg->link, &msgs); | |
4791c03d | 1203 | intf->waiting_events_count = 0; |
87ebd06f CM |
1204 | if (intf->event_msg_printed) { |
1205 | printk(KERN_WARNING PFX "Event queue no longer" | |
1206 | " full\n"); | |
1207 | intf->event_msg_printed = 0; | |
1208 | } | |
393d2cc3 | 1209 | |
b2c03941 CM |
1210 | intf->delivering_events = 1; |
1211 | spin_unlock_irqrestore(&intf->events_lock, flags); | |
1212 | ||
1213 | list_for_each_entry_safe(msg, msg2, &msgs, link) { | |
1214 | msg->user = user; | |
1215 | kref_get(&user->refcount); | |
1216 | deliver_response(msg); | |
1217 | } | |
1218 | ||
1219 | spin_lock_irqsave(&intf->events_lock, flags); | |
1220 | intf->delivering_events = 0; | |
393d2cc3 CM |
1221 | } |
1222 | ||
b2c03941 | 1223 | out: |
393d2cc3 | 1224 | spin_unlock_irqrestore(&intf->events_lock, flags); |
1da177e4 LT |
1225 | |
1226 | return 0; | |
1227 | } | |
c70d7499 | 1228 | EXPORT_SYMBOL(ipmi_set_gets_events); |
1da177e4 | 1229 | |
393d2cc3 CM |
1230 | static struct cmd_rcvr *find_cmd_rcvr(ipmi_smi_t intf, |
1231 | unsigned char netfn, | |
c69c3127 CM |
1232 | unsigned char cmd, |
1233 | unsigned char chan) | |
393d2cc3 CM |
1234 | { |
1235 | struct cmd_rcvr *rcvr; | |
1236 | ||
1237 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { | |
c69c3127 CM |
1238 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) |
1239 | && (rcvr->chans & (1 << chan))) | |
393d2cc3 CM |
1240 | return rcvr; |
1241 | } | |
1242 | return NULL; | |
1243 | } | |
1244 | ||
c69c3127 CM |
1245 | static int is_cmd_rcvr_exclusive(ipmi_smi_t intf, |
1246 | unsigned char netfn, | |
1247 | unsigned char cmd, | |
1248 | unsigned int chans) | |
1249 | { | |
1250 | struct cmd_rcvr *rcvr; | |
1251 | ||
1252 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { | |
1253 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) | |
1254 | && (rcvr->chans & chans)) | |
1255 | return 0; | |
1256 | } | |
1257 | return 1; | |
1258 | } | |
1259 | ||
1da177e4 LT |
1260 | int ipmi_register_for_cmd(ipmi_user_t user, |
1261 | unsigned char netfn, | |
c69c3127 CM |
1262 | unsigned char cmd, |
1263 | unsigned int chans) | |
1da177e4 | 1264 | { |
393d2cc3 CM |
1265 | ipmi_smi_t intf = user->intf; |
1266 | struct cmd_rcvr *rcvr; | |
393d2cc3 | 1267 | int rv = 0; |
1da177e4 LT |
1268 | |
1269 | ||
1270 | rcvr = kmalloc(sizeof(*rcvr), GFP_KERNEL); | |
8a3628d5 | 1271 | if (!rcvr) |
1da177e4 | 1272 | return -ENOMEM; |
393d2cc3 CM |
1273 | rcvr->cmd = cmd; |
1274 | rcvr->netfn = netfn; | |
c69c3127 | 1275 | rcvr->chans = chans; |
393d2cc3 | 1276 | rcvr->user = user; |
1da177e4 | 1277 | |
d6dfd131 | 1278 | mutex_lock(&intf->cmd_rcvrs_mutex); |
1da177e4 | 1279 | /* Make sure the command/netfn is not already registered. */ |
c69c3127 | 1280 | if (!is_cmd_rcvr_exclusive(intf, netfn, cmd, chans)) { |
393d2cc3 CM |
1281 | rv = -EBUSY; |
1282 | goto out_unlock; | |
1da177e4 | 1283 | } |
877197ef | 1284 | |
393d2cc3 | 1285 | list_add_rcu(&rcvr->link, &intf->cmd_rcvrs); |
1da177e4 | 1286 | |
393d2cc3 | 1287 | out_unlock: |
d6dfd131 | 1288 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
1da177e4 LT |
1289 | if (rv) |
1290 | kfree(rcvr); | |
1291 | ||
1292 | return rv; | |
1293 | } | |
c70d7499 | 1294 | EXPORT_SYMBOL(ipmi_register_for_cmd); |
1da177e4 LT |
1295 | |
1296 | int ipmi_unregister_for_cmd(ipmi_user_t user, | |
1297 | unsigned char netfn, | |
c69c3127 CM |
1298 | unsigned char cmd, |
1299 | unsigned int chans) | |
1da177e4 | 1300 | { |
393d2cc3 CM |
1301 | ipmi_smi_t intf = user->intf; |
1302 | struct cmd_rcvr *rcvr; | |
c69c3127 CM |
1303 | struct cmd_rcvr *rcvrs = NULL; |
1304 | int i, rv = -ENOENT; | |
1da177e4 | 1305 | |
d6dfd131 | 1306 | mutex_lock(&intf->cmd_rcvrs_mutex); |
c69c3127 CM |
1307 | for (i = 0; i < IPMI_NUM_CHANNELS; i++) { |
1308 | if (((1 << i) & chans) == 0) | |
1309 | continue; | |
1310 | rcvr = find_cmd_rcvr(intf, netfn, cmd, i); | |
1311 | if (rcvr == NULL) | |
1312 | continue; | |
1313 | if (rcvr->user == user) { | |
1314 | rv = 0; | |
1315 | rcvr->chans &= ~chans; | |
1316 | if (rcvr->chans == 0) { | |
1317 | list_del_rcu(&rcvr->link); | |
1318 | rcvr->next = rcvrs; | |
1319 | rcvrs = rcvr; | |
1320 | } | |
1321 | } | |
1322 | } | |
1323 | mutex_unlock(&intf->cmd_rcvrs_mutex); | |
1324 | synchronize_rcu(); | |
1325 | while (rcvrs) { | |
1326 | rcvr = rcvrs; | |
1327 | rcvrs = rcvr->next; | |
393d2cc3 | 1328 | kfree(rcvr); |
1da177e4 | 1329 | } |
c69c3127 | 1330 | return rv; |
1da177e4 | 1331 | } |
c70d7499 | 1332 | EXPORT_SYMBOL(ipmi_unregister_for_cmd); |
1da177e4 | 1333 | |
1da177e4 LT |
1334 | static unsigned char |
1335 | ipmb_checksum(unsigned char *data, int size) | |
1336 | { | |
1337 | unsigned char csum = 0; | |
c70d7499 | 1338 | |
1da177e4 LT |
1339 | for (; size > 0; size--, data++) |
1340 | csum += *data; | |
1341 | ||
1342 | return -csum; | |
1343 | } | |
1344 | ||
1345 | static inline void format_ipmb_msg(struct ipmi_smi_msg *smi_msg, | |
1346 | struct kernel_ipmi_msg *msg, | |
1347 | struct ipmi_ipmb_addr *ipmb_addr, | |
1348 | long msgid, | |
1349 | unsigned char ipmb_seq, | |
1350 | int broadcast, | |
1351 | unsigned char source_address, | |
1352 | unsigned char source_lun) | |
1353 | { | |
1354 | int i = broadcast; | |
1355 | ||
1356 | /* Format the IPMB header data. */ | |
1357 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1358 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1359 | smi_msg->data[2] = ipmb_addr->channel; | |
1360 | if (broadcast) | |
1361 | smi_msg->data[3] = 0; | |
1362 | smi_msg->data[i+3] = ipmb_addr->slave_addr; | |
1363 | smi_msg->data[i+4] = (msg->netfn << 2) | (ipmb_addr->lun & 0x3); | |
1364 | smi_msg->data[i+5] = ipmb_checksum(&(smi_msg->data[i+3]), 2); | |
1365 | smi_msg->data[i+6] = source_address; | |
1366 | smi_msg->data[i+7] = (ipmb_seq << 2) | source_lun; | |
1367 | smi_msg->data[i+8] = msg->cmd; | |
1368 | ||
1369 | /* Now tack on the data to the message. */ | |
1370 | if (msg->data_len > 0) | |
1371 | memcpy(&(smi_msg->data[i+9]), msg->data, | |
1372 | msg->data_len); | |
1373 | smi_msg->data_size = msg->data_len + 9; | |
1374 | ||
1375 | /* Now calculate the checksum and tack it on. */ | |
1376 | smi_msg->data[i+smi_msg->data_size] | |
1377 | = ipmb_checksum(&(smi_msg->data[i+6]), | |
1378 | smi_msg->data_size-6); | |
1379 | ||
c70d7499 CM |
1380 | /* |
1381 | * Add on the checksum size and the offset from the | |
1382 | * broadcast. | |
1383 | */ | |
1da177e4 LT |
1384 | smi_msg->data_size += 1 + i; |
1385 | ||
1386 | smi_msg->msgid = msgid; | |
1387 | } | |
1388 | ||
1389 | static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg, | |
1390 | struct kernel_ipmi_msg *msg, | |
1391 | struct ipmi_lan_addr *lan_addr, | |
1392 | long msgid, | |
1393 | unsigned char ipmb_seq, | |
1394 | unsigned char source_lun) | |
1395 | { | |
1396 | /* Format the IPMB header data. */ | |
1397 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1398 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1399 | smi_msg->data[2] = lan_addr->channel; | |
1400 | smi_msg->data[3] = lan_addr->session_handle; | |
1401 | smi_msg->data[4] = lan_addr->remote_SWID; | |
1402 | smi_msg->data[5] = (msg->netfn << 2) | (lan_addr->lun & 0x3); | |
1403 | smi_msg->data[6] = ipmb_checksum(&(smi_msg->data[4]), 2); | |
1404 | smi_msg->data[7] = lan_addr->local_SWID; | |
1405 | smi_msg->data[8] = (ipmb_seq << 2) | source_lun; | |
1406 | smi_msg->data[9] = msg->cmd; | |
1407 | ||
1408 | /* Now tack on the data to the message. */ | |
1409 | if (msg->data_len > 0) | |
1410 | memcpy(&(smi_msg->data[10]), msg->data, | |
1411 | msg->data_len); | |
1412 | smi_msg->data_size = msg->data_len + 10; | |
1413 | ||
1414 | /* Now calculate the checksum and tack it on. */ | |
1415 | smi_msg->data[smi_msg->data_size] | |
1416 | = ipmb_checksum(&(smi_msg->data[7]), | |
1417 | smi_msg->data_size-7); | |
1418 | ||
c70d7499 CM |
1419 | /* |
1420 | * Add on the checksum size and the offset from the | |
1421 | * broadcast. | |
1422 | */ | |
1da177e4 LT |
1423 | smi_msg->data_size += 1; |
1424 | ||
1425 | smi_msg->msgid = msgid; | |
1426 | } | |
1427 | ||
c70d7499 CM |
1428 | /* |
1429 | * Separate from ipmi_request so that the user does not have to be | |
1430 | * supplied in certain circumstances (mainly at panic time). If | |
1431 | * messages are supplied, they will be freed, even if an error | |
1432 | * occurs. | |
1433 | */ | |
393d2cc3 CM |
1434 | static int i_ipmi_request(ipmi_user_t user, |
1435 | ipmi_smi_t intf, | |
1436 | struct ipmi_addr *addr, | |
1437 | long msgid, | |
1438 | struct kernel_ipmi_msg *msg, | |
1439 | void *user_msg_data, | |
1440 | void *supplied_smi, | |
1441 | struct ipmi_recv_msg *supplied_recv, | |
1442 | int priority, | |
1443 | unsigned char source_address, | |
1444 | unsigned char source_lun, | |
1445 | int retries, | |
1446 | unsigned int retry_time_ms) | |
1da177e4 | 1447 | { |
b2c03941 CM |
1448 | int rv = 0; |
1449 | struct ipmi_smi_msg *smi_msg; | |
1450 | struct ipmi_recv_msg *recv_msg; | |
1451 | unsigned long flags; | |
1452 | struct ipmi_smi_handlers *handlers; | |
1da177e4 LT |
1453 | |
1454 | ||
c70d7499 | 1455 | if (supplied_recv) |
1da177e4 | 1456 | recv_msg = supplied_recv; |
c70d7499 | 1457 | else { |
1da177e4 | 1458 | recv_msg = ipmi_alloc_recv_msg(); |
c70d7499 | 1459 | if (recv_msg == NULL) |
1da177e4 | 1460 | return -ENOMEM; |
1da177e4 LT |
1461 | } |
1462 | recv_msg->user_msg_data = user_msg_data; | |
1463 | ||
c70d7499 | 1464 | if (supplied_smi) |
1da177e4 | 1465 | smi_msg = (struct ipmi_smi_msg *) supplied_smi; |
c70d7499 | 1466 | else { |
1da177e4 LT |
1467 | smi_msg = ipmi_alloc_smi_msg(); |
1468 | if (smi_msg == NULL) { | |
1469 | ipmi_free_recv_msg(recv_msg); | |
1470 | return -ENOMEM; | |
1471 | } | |
1472 | } | |
1473 | ||
b2c03941 CM |
1474 | rcu_read_lock(); |
1475 | handlers = intf->handlers; | |
1476 | if (!handlers) { | |
1477 | rv = -ENODEV; | |
1478 | goto out_err; | |
1479 | } | |
1480 | ||
1da177e4 | 1481 | recv_msg->user = user; |
393d2cc3 CM |
1482 | if (user) |
1483 | kref_get(&user->refcount); | |
1da177e4 | 1484 | recv_msg->msgid = msgid; |
c70d7499 CM |
1485 | /* |
1486 | * Store the message to send in the receive message so timeout | |
1487 | * responses can get the proper response data. | |
1488 | */ | |
1da177e4 LT |
1489 | recv_msg->msg = *msg; |
1490 | ||
1491 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
1492 | struct ipmi_system_interface_addr *smi_addr; | |
1493 | ||
1494 | if (msg->netfn & 1) { | |
1495 | /* Responses are not allowed to the SMI. */ | |
1496 | rv = -EINVAL; | |
1497 | goto out_err; | |
1498 | } | |
1499 | ||
1500 | smi_addr = (struct ipmi_system_interface_addr *) addr; | |
1501 | if (smi_addr->lun > 3) { | |
b2655f26 | 1502 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1503 | rv = -EINVAL; |
1504 | goto out_err; | |
1505 | } | |
1506 | ||
1507 | memcpy(&recv_msg->addr, smi_addr, sizeof(*smi_addr)); | |
1508 | ||
1509 | if ((msg->netfn == IPMI_NETFN_APP_REQUEST) | |
1510 | && ((msg->cmd == IPMI_SEND_MSG_CMD) | |
1511 | || (msg->cmd == IPMI_GET_MSG_CMD) | |
c70d7499 CM |
1512 | || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD))) { |
1513 | /* | |
1514 | * We don't let the user do these, since we manage | |
1515 | * the sequence numbers. | |
1516 | */ | |
b2655f26 | 1517 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1518 | rv = -EINVAL; |
1519 | goto out_err; | |
1520 | } | |
1521 | ||
b9675136 CM |
1522 | if (((msg->netfn == IPMI_NETFN_APP_REQUEST) |
1523 | && ((msg->cmd == IPMI_COLD_RESET_CMD) | |
1524 | || (msg->cmd == IPMI_WARM_RESET_CMD))) | |
c70d7499 | 1525 | || (msg->netfn == IPMI_NETFN_FIRMWARE_REQUEST)) { |
b9675136 CM |
1526 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); |
1527 | intf->auto_maintenance_timeout | |
1528 | = IPMI_MAINTENANCE_MODE_TIMEOUT; | |
1529 | if (!intf->maintenance_mode | |
c70d7499 | 1530 | && !intf->maintenance_mode_enable) { |
b9675136 CM |
1531 | intf->maintenance_mode_enable = 1; |
1532 | maintenance_mode_update(intf); | |
1533 | } | |
1534 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, | |
1535 | flags); | |
1536 | } | |
1537 | ||
1da177e4 | 1538 | if ((msg->data_len + 2) > IPMI_MAX_MSG_LENGTH) { |
b2655f26 | 1539 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1540 | rv = -EMSGSIZE; |
1541 | goto out_err; | |
1542 | } | |
1543 | ||
1544 | smi_msg->data[0] = (msg->netfn << 2) | (smi_addr->lun & 0x3); | |
1545 | smi_msg->data[1] = msg->cmd; | |
1546 | smi_msg->msgid = msgid; | |
1547 | smi_msg->user_data = recv_msg; | |
1548 | if (msg->data_len > 0) | |
1549 | memcpy(&(smi_msg->data[2]), msg->data, msg->data_len); | |
1550 | smi_msg->data_size = msg->data_len + 2; | |
b2655f26 | 1551 | ipmi_inc_stat(intf, sent_local_commands); |
25176ed6 | 1552 | } else if (is_ipmb_addr(addr) || is_ipmb_bcast_addr(addr)) { |
1da177e4 LT |
1553 | struct ipmi_ipmb_addr *ipmb_addr; |
1554 | unsigned char ipmb_seq; | |
1555 | long seqid; | |
1556 | int broadcast = 0; | |
1557 | ||
9c101fd4 | 1558 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
b2655f26 | 1559 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1560 | rv = -EINVAL; |
1561 | goto out_err; | |
1562 | } | |
1563 | ||
1564 | if (intf->channels[addr->channel].medium | |
c70d7499 | 1565 | != IPMI_CHANNEL_MEDIUM_IPMB) { |
b2655f26 | 1566 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1567 | rv = -EINVAL; |
1568 | goto out_err; | |
1569 | } | |
1570 | ||
1571 | if (retries < 0) { | |
1572 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) | |
1573 | retries = 0; /* Don't retry broadcasts. */ | |
1574 | else | |
1575 | retries = 4; | |
1576 | } | |
1577 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) { | |
c70d7499 CM |
1578 | /* |
1579 | * Broadcasts add a zero at the beginning of the | |
1580 | * message, but otherwise is the same as an IPMB | |
1581 | * address. | |
1582 | */ | |
1da177e4 LT |
1583 | addr->addr_type = IPMI_IPMB_ADDR_TYPE; |
1584 | broadcast = 1; | |
1585 | } | |
1586 | ||
1587 | ||
1588 | /* Default to 1 second retries. */ | |
1589 | if (retry_time_ms == 0) | |
1590 | retry_time_ms = 1000; | |
1591 | ||
c70d7499 CM |
1592 | /* |
1593 | * 9 for the header and 1 for the checksum, plus | |
1594 | * possibly one for the broadcast. | |
1595 | */ | |
1da177e4 | 1596 | if ((msg->data_len + 10 + broadcast) > IPMI_MAX_MSG_LENGTH) { |
b2655f26 | 1597 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1598 | rv = -EMSGSIZE; |
1599 | goto out_err; | |
1600 | } | |
1601 | ||
1602 | ipmb_addr = (struct ipmi_ipmb_addr *) addr; | |
1603 | if (ipmb_addr->lun > 3) { | |
b2655f26 | 1604 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1605 | rv = -EINVAL; |
1606 | goto out_err; | |
1607 | } | |
1608 | ||
1609 | memcpy(&recv_msg->addr, ipmb_addr, sizeof(*ipmb_addr)); | |
1610 | ||
1611 | if (recv_msg->msg.netfn & 0x1) { | |
c70d7499 CM |
1612 | /* |
1613 | * It's a response, so use the user's sequence | |
1614 | * from msgid. | |
1615 | */ | |
b2655f26 | 1616 | ipmi_inc_stat(intf, sent_ipmb_responses); |
1da177e4 LT |
1617 | format_ipmb_msg(smi_msg, msg, ipmb_addr, msgid, |
1618 | msgid, broadcast, | |
1619 | source_address, source_lun); | |
1620 | ||
c70d7499 CM |
1621 | /* |
1622 | * Save the receive message so we can use it | |
1623 | * to deliver the response. | |
1624 | */ | |
1da177e4 LT |
1625 | smi_msg->user_data = recv_msg; |
1626 | } else { | |
1627 | /* It's a command, so get a sequence for it. */ | |
1628 | ||
1629 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1630 | ||
c70d7499 CM |
1631 | /* |
1632 | * Create a sequence number with a 1 second | |
1633 | * timeout and 4 retries. | |
1634 | */ | |
1da177e4 LT |
1635 | rv = intf_next_seq(intf, |
1636 | recv_msg, | |
1637 | retry_time_ms, | |
1638 | retries, | |
1639 | broadcast, | |
1640 | &ipmb_seq, | |
1641 | &seqid); | |
1642 | if (rv) { | |
c70d7499 CM |
1643 | /* |
1644 | * We have used up all the sequence numbers, | |
1645 | * probably, so abort. | |
1646 | */ | |
1da177e4 LT |
1647 | spin_unlock_irqrestore(&(intf->seq_lock), |
1648 | flags); | |
1649 | goto out_err; | |
1650 | } | |
1651 | ||
25176ed6 CM |
1652 | ipmi_inc_stat(intf, sent_ipmb_commands); |
1653 | ||
c70d7499 CM |
1654 | /* |
1655 | * Store the sequence number in the message, | |
1656 | * so that when the send message response | |
1657 | * comes back we can start the timer. | |
1658 | */ | |
1da177e4 LT |
1659 | format_ipmb_msg(smi_msg, msg, ipmb_addr, |
1660 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1661 | ipmb_seq, broadcast, | |
1662 | source_address, source_lun); | |
1663 | ||
c70d7499 CM |
1664 | /* |
1665 | * Copy the message into the recv message data, so we | |
1666 | * can retransmit it later if necessary. | |
1667 | */ | |
1da177e4 LT |
1668 | memcpy(recv_msg->msg_data, smi_msg->data, |
1669 | smi_msg->data_size); | |
1670 | recv_msg->msg.data = recv_msg->msg_data; | |
1671 | recv_msg->msg.data_len = smi_msg->data_size; | |
1672 | ||
c70d7499 CM |
1673 | /* |
1674 | * We don't unlock until here, because we need | |
1675 | * to copy the completed message into the | |
1676 | * recv_msg before we release the lock. | |
1677 | * Otherwise, race conditions may bite us. I | |
1678 | * know that's pretty paranoid, but I prefer | |
1679 | * to be correct. | |
1680 | */ | |
1da177e4 LT |
1681 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
1682 | } | |
25176ed6 | 1683 | } else if (is_lan_addr(addr)) { |
1da177e4 LT |
1684 | struct ipmi_lan_addr *lan_addr; |
1685 | unsigned char ipmb_seq; | |
1686 | long seqid; | |
1687 | ||
12fc1d7b | 1688 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
b2655f26 | 1689 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1690 | rv = -EINVAL; |
1691 | goto out_err; | |
1692 | } | |
1693 | ||
1694 | if ((intf->channels[addr->channel].medium | |
c70d7499 | 1695 | != IPMI_CHANNEL_MEDIUM_8023LAN) |
1da177e4 | 1696 | && (intf->channels[addr->channel].medium |
c70d7499 | 1697 | != IPMI_CHANNEL_MEDIUM_ASYNC)) { |
b2655f26 | 1698 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1699 | rv = -EINVAL; |
1700 | goto out_err; | |
1701 | } | |
1702 | ||
1703 | retries = 4; | |
1704 | ||
1705 | /* Default to 1 second retries. */ | |
1706 | if (retry_time_ms == 0) | |
1707 | retry_time_ms = 1000; | |
1708 | ||
1709 | /* 11 for the header and 1 for the checksum. */ | |
1710 | if ((msg->data_len + 12) > IPMI_MAX_MSG_LENGTH) { | |
b2655f26 | 1711 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1712 | rv = -EMSGSIZE; |
1713 | goto out_err; | |
1714 | } | |
1715 | ||
1716 | lan_addr = (struct ipmi_lan_addr *) addr; | |
1717 | if (lan_addr->lun > 3) { | |
b2655f26 | 1718 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1719 | rv = -EINVAL; |
1720 | goto out_err; | |
1721 | } | |
1722 | ||
1723 | memcpy(&recv_msg->addr, lan_addr, sizeof(*lan_addr)); | |
1724 | ||
1725 | if (recv_msg->msg.netfn & 0x1) { | |
c70d7499 CM |
1726 | /* |
1727 | * It's a response, so use the user's sequence | |
1728 | * from msgid. | |
1729 | */ | |
b2655f26 | 1730 | ipmi_inc_stat(intf, sent_lan_responses); |
1da177e4 LT |
1731 | format_lan_msg(smi_msg, msg, lan_addr, msgid, |
1732 | msgid, source_lun); | |
1733 | ||
c70d7499 CM |
1734 | /* |
1735 | * Save the receive message so we can use it | |
1736 | * to deliver the response. | |
1737 | */ | |
1da177e4 LT |
1738 | smi_msg->user_data = recv_msg; |
1739 | } else { | |
1740 | /* It's a command, so get a sequence for it. */ | |
1741 | ||
1742 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1743 | ||
c70d7499 CM |
1744 | /* |
1745 | * Create a sequence number with a 1 second | |
1746 | * timeout and 4 retries. | |
1747 | */ | |
1da177e4 LT |
1748 | rv = intf_next_seq(intf, |
1749 | recv_msg, | |
1750 | retry_time_ms, | |
1751 | retries, | |
1752 | 0, | |
1753 | &ipmb_seq, | |
1754 | &seqid); | |
1755 | if (rv) { | |
c70d7499 CM |
1756 | /* |
1757 | * We have used up all the sequence numbers, | |
1758 | * probably, so abort. | |
1759 | */ | |
1da177e4 LT |
1760 | spin_unlock_irqrestore(&(intf->seq_lock), |
1761 | flags); | |
1762 | goto out_err; | |
1763 | } | |
1764 | ||
25176ed6 CM |
1765 | ipmi_inc_stat(intf, sent_lan_commands); |
1766 | ||
c70d7499 CM |
1767 | /* |
1768 | * Store the sequence number in the message, | |
1769 | * so that when the send message response | |
1770 | * comes back we can start the timer. | |
1771 | */ | |
1da177e4 LT |
1772 | format_lan_msg(smi_msg, msg, lan_addr, |
1773 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1774 | ipmb_seq, source_lun); | |
1775 | ||
c70d7499 CM |
1776 | /* |
1777 | * Copy the message into the recv message data, so we | |
1778 | * can retransmit it later if necessary. | |
1779 | */ | |
1da177e4 LT |
1780 | memcpy(recv_msg->msg_data, smi_msg->data, |
1781 | smi_msg->data_size); | |
1782 | recv_msg->msg.data = recv_msg->msg_data; | |
1783 | recv_msg->msg.data_len = smi_msg->data_size; | |
1784 | ||
c70d7499 CM |
1785 | /* |
1786 | * We don't unlock until here, because we need | |
1787 | * to copy the completed message into the | |
1788 | * recv_msg before we release the lock. | |
1789 | * Otherwise, race conditions may bite us. I | |
1790 | * know that's pretty paranoid, but I prefer | |
1791 | * to be correct. | |
1792 | */ | |
1da177e4 LT |
1793 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
1794 | } | |
1795 | } else { | |
1796 | /* Unknown address type. */ | |
b2655f26 | 1797 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1798 | rv = -EINVAL; |
1799 | goto out_err; | |
1800 | } | |
1801 | ||
1802 | #ifdef DEBUG_MSGING | |
1803 | { | |
1804 | int m; | |
e8b33617 | 1805 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
1806 | printk(" %2.2x", smi_msg->data[m]); |
1807 | printk("\n"); | |
1808 | } | |
1809 | #endif | |
b2c03941 CM |
1810 | |
1811 | handlers->sender(intf->send_info, smi_msg, priority); | |
1812 | rcu_read_unlock(); | |
1da177e4 LT |
1813 | |
1814 | return 0; | |
1815 | ||
1816 | out_err: | |
b2c03941 | 1817 | rcu_read_unlock(); |
1da177e4 LT |
1818 | ipmi_free_smi_msg(smi_msg); |
1819 | ipmi_free_recv_msg(recv_msg); | |
1820 | return rv; | |
1821 | } | |
1822 | ||
c14979b9 CM |
1823 | static int check_addr(ipmi_smi_t intf, |
1824 | struct ipmi_addr *addr, | |
1825 | unsigned char *saddr, | |
1826 | unsigned char *lun) | |
1827 | { | |
1828 | if (addr->channel >= IPMI_MAX_CHANNELS) | |
1829 | return -EINVAL; | |
1830 | *lun = intf->channels[addr->channel].lun; | |
1831 | *saddr = intf->channels[addr->channel].address; | |
1832 | return 0; | |
1833 | } | |
1834 | ||
1da177e4 LT |
1835 | int ipmi_request_settime(ipmi_user_t user, |
1836 | struct ipmi_addr *addr, | |
1837 | long msgid, | |
1838 | struct kernel_ipmi_msg *msg, | |
1839 | void *user_msg_data, | |
1840 | int priority, | |
1841 | int retries, | |
1842 | unsigned int retry_time_ms) | |
1843 | { | |
c14979b9 CM |
1844 | unsigned char saddr, lun; |
1845 | int rv; | |
1846 | ||
8a3628d5 | 1847 | if (!user) |
56a55ec6 | 1848 | return -EINVAL; |
c14979b9 CM |
1849 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1850 | if (rv) | |
1851 | return rv; | |
1da177e4 LT |
1852 | return i_ipmi_request(user, |
1853 | user->intf, | |
1854 | addr, | |
1855 | msgid, | |
1856 | msg, | |
1857 | user_msg_data, | |
1858 | NULL, NULL, | |
1859 | priority, | |
c14979b9 CM |
1860 | saddr, |
1861 | lun, | |
1da177e4 LT |
1862 | retries, |
1863 | retry_time_ms); | |
1864 | } | |
c70d7499 | 1865 | EXPORT_SYMBOL(ipmi_request_settime); |
1da177e4 LT |
1866 | |
1867 | int ipmi_request_supply_msgs(ipmi_user_t user, | |
1868 | struct ipmi_addr *addr, | |
1869 | long msgid, | |
1870 | struct kernel_ipmi_msg *msg, | |
1871 | void *user_msg_data, | |
1872 | void *supplied_smi, | |
1873 | struct ipmi_recv_msg *supplied_recv, | |
1874 | int priority) | |
1875 | { | |
c14979b9 CM |
1876 | unsigned char saddr, lun; |
1877 | int rv; | |
1878 | ||
8a3628d5 | 1879 | if (!user) |
56a55ec6 | 1880 | return -EINVAL; |
c14979b9 CM |
1881 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1882 | if (rv) | |
1883 | return rv; | |
1da177e4 LT |
1884 | return i_ipmi_request(user, |
1885 | user->intf, | |
1886 | addr, | |
1887 | msgid, | |
1888 | msg, | |
1889 | user_msg_data, | |
1890 | supplied_smi, | |
1891 | supplied_recv, | |
1892 | priority, | |
c14979b9 CM |
1893 | saddr, |
1894 | lun, | |
1da177e4 LT |
1895 | -1, 0); |
1896 | } | |
c70d7499 | 1897 | EXPORT_SYMBOL(ipmi_request_supply_msgs); |
1da177e4 | 1898 | |
1aa16eea | 1899 | #ifdef CONFIG_PROC_FS |
07412736 | 1900 | static int smi_ipmb_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1901 | { |
07412736 | 1902 | ipmi_smi_t intf = m->private; |
c14979b9 | 1903 | int i; |
1da177e4 | 1904 | |
07412736 AD |
1905 | seq_printf(m, "%x", intf->channels[0].address); |
1906 | for (i = 1; i < IPMI_MAX_CHANNELS; i++) | |
1907 | seq_printf(m, " %x", intf->channels[i].address); | |
1908 | return seq_putc(m, '\n'); | |
1da177e4 LT |
1909 | } |
1910 | ||
07412736 | 1911 | static int smi_ipmb_proc_open(struct inode *inode, struct file *file) |
1da177e4 | 1912 | { |
07412736 AD |
1913 | return single_open(file, smi_ipmb_proc_show, PDE(inode)->data); |
1914 | } | |
1da177e4 | 1915 | |
07412736 AD |
1916 | static const struct file_operations smi_ipmb_proc_ops = { |
1917 | .open = smi_ipmb_proc_open, | |
1918 | .read = seq_read, | |
1919 | .llseek = seq_lseek, | |
1920 | .release = single_release, | |
1921 | }; | |
1922 | ||
1923 | static int smi_version_proc_show(struct seq_file *m, void *v) | |
1924 | { | |
1925 | ipmi_smi_t intf = m->private; | |
1926 | ||
1927 | return seq_printf(m, "%u.%u\n", | |
50c812b2 CM |
1928 | ipmi_version_major(&intf->bmc->id), |
1929 | ipmi_version_minor(&intf->bmc->id)); | |
1da177e4 LT |
1930 | } |
1931 | ||
07412736 | 1932 | static int smi_version_proc_open(struct inode *inode, struct file *file) |
1da177e4 | 1933 | { |
07412736 AD |
1934 | return single_open(file, smi_version_proc_show, PDE(inode)->data); |
1935 | } | |
1936 | ||
1937 | static const struct file_operations smi_version_proc_ops = { | |
1938 | .open = smi_version_proc_open, | |
1939 | .read = seq_read, | |
1940 | .llseek = seq_lseek, | |
1941 | .release = single_release, | |
1942 | }; | |
1da177e4 | 1943 | |
07412736 AD |
1944 | static int smi_stats_proc_show(struct seq_file *m, void *v) |
1945 | { | |
1946 | ipmi_smi_t intf = m->private; | |
1947 | ||
1948 | seq_printf(m, "sent_invalid_commands: %u\n", | |
b2655f26 | 1949 | ipmi_get_stat(intf, sent_invalid_commands)); |
07412736 | 1950 | seq_printf(m, "sent_local_commands: %u\n", |
b2655f26 | 1951 | ipmi_get_stat(intf, sent_local_commands)); |
07412736 | 1952 | seq_printf(m, "handled_local_responses: %u\n", |
b2655f26 | 1953 | ipmi_get_stat(intf, handled_local_responses)); |
07412736 | 1954 | seq_printf(m, "unhandled_local_responses: %u\n", |
b2655f26 | 1955 | ipmi_get_stat(intf, unhandled_local_responses)); |
07412736 | 1956 | seq_printf(m, "sent_ipmb_commands: %u\n", |
b2655f26 | 1957 | ipmi_get_stat(intf, sent_ipmb_commands)); |
07412736 | 1958 | seq_printf(m, "sent_ipmb_command_errs: %u\n", |
b2655f26 | 1959 | ipmi_get_stat(intf, sent_ipmb_command_errs)); |
07412736 | 1960 | seq_printf(m, "retransmitted_ipmb_commands: %u\n", |
b2655f26 | 1961 | ipmi_get_stat(intf, retransmitted_ipmb_commands)); |
07412736 | 1962 | seq_printf(m, "timed_out_ipmb_commands: %u\n", |
b2655f26 | 1963 | ipmi_get_stat(intf, timed_out_ipmb_commands)); |
07412736 | 1964 | seq_printf(m, "timed_out_ipmb_broadcasts: %u\n", |
b2655f26 | 1965 | ipmi_get_stat(intf, timed_out_ipmb_broadcasts)); |
07412736 | 1966 | seq_printf(m, "sent_ipmb_responses: %u\n", |
b2655f26 | 1967 | ipmi_get_stat(intf, sent_ipmb_responses)); |
07412736 | 1968 | seq_printf(m, "handled_ipmb_responses: %u\n", |
b2655f26 | 1969 | ipmi_get_stat(intf, handled_ipmb_responses)); |
07412736 | 1970 | seq_printf(m, "invalid_ipmb_responses: %u\n", |
b2655f26 | 1971 | ipmi_get_stat(intf, invalid_ipmb_responses)); |
07412736 | 1972 | seq_printf(m, "unhandled_ipmb_responses: %u\n", |
b2655f26 | 1973 | ipmi_get_stat(intf, unhandled_ipmb_responses)); |
07412736 | 1974 | seq_printf(m, "sent_lan_commands: %u\n", |
b2655f26 | 1975 | ipmi_get_stat(intf, sent_lan_commands)); |
07412736 | 1976 | seq_printf(m, "sent_lan_command_errs: %u\n", |
b2655f26 | 1977 | ipmi_get_stat(intf, sent_lan_command_errs)); |
07412736 | 1978 | seq_printf(m, "retransmitted_lan_commands: %u\n", |
b2655f26 | 1979 | ipmi_get_stat(intf, retransmitted_lan_commands)); |
07412736 | 1980 | seq_printf(m, "timed_out_lan_commands: %u\n", |
b2655f26 | 1981 | ipmi_get_stat(intf, timed_out_lan_commands)); |
07412736 | 1982 | seq_printf(m, "sent_lan_responses: %u\n", |
b2655f26 | 1983 | ipmi_get_stat(intf, sent_lan_responses)); |
07412736 | 1984 | seq_printf(m, "handled_lan_responses: %u\n", |
b2655f26 | 1985 | ipmi_get_stat(intf, handled_lan_responses)); |
07412736 | 1986 | seq_printf(m, "invalid_lan_responses: %u\n", |
b2655f26 | 1987 | ipmi_get_stat(intf, invalid_lan_responses)); |
07412736 | 1988 | seq_printf(m, "unhandled_lan_responses: %u\n", |
b2655f26 | 1989 | ipmi_get_stat(intf, unhandled_lan_responses)); |
07412736 | 1990 | seq_printf(m, "handled_commands: %u\n", |
b2655f26 | 1991 | ipmi_get_stat(intf, handled_commands)); |
07412736 | 1992 | seq_printf(m, "invalid_commands: %u\n", |
b2655f26 | 1993 | ipmi_get_stat(intf, invalid_commands)); |
07412736 | 1994 | seq_printf(m, "unhandled_commands: %u\n", |
b2655f26 | 1995 | ipmi_get_stat(intf, unhandled_commands)); |
07412736 | 1996 | seq_printf(m, "invalid_events: %u\n", |
b2655f26 | 1997 | ipmi_get_stat(intf, invalid_events)); |
07412736 | 1998 | seq_printf(m, "events: %u\n", |
b2655f26 | 1999 | ipmi_get_stat(intf, events)); |
07412736 | 2000 | seq_printf(m, "failed rexmit LAN msgs: %u\n", |
25176ed6 | 2001 | ipmi_get_stat(intf, dropped_rexmit_lan_commands)); |
07412736 | 2002 | seq_printf(m, "failed rexmit IPMB msgs: %u\n", |
25176ed6 | 2003 | ipmi_get_stat(intf, dropped_rexmit_ipmb_commands)); |
07412736 AD |
2004 | return 0; |
2005 | } | |
1da177e4 | 2006 | |
07412736 AD |
2007 | static int smi_stats_proc_open(struct inode *inode, struct file *file) |
2008 | { | |
2009 | return single_open(file, smi_stats_proc_show, PDE(inode)->data); | |
1da177e4 | 2010 | } |
07412736 AD |
2011 | |
2012 | static const struct file_operations smi_stats_proc_ops = { | |
2013 | .open = smi_stats_proc_open, | |
2014 | .read = seq_read, | |
2015 | .llseek = seq_lseek, | |
2016 | .release = single_release, | |
2017 | }; | |
1aa16eea | 2018 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2019 | |
2020 | int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, | |
07412736 | 2021 | const struct file_operations *proc_ops, |
99b76233 | 2022 | void *data) |
1da177e4 | 2023 | { |
1da177e4 | 2024 | int rv = 0; |
3b625943 CM |
2025 | #ifdef CONFIG_PROC_FS |
2026 | struct proc_dir_entry *file; | |
1da177e4 LT |
2027 | struct ipmi_proc_entry *entry; |
2028 | ||
2029 | /* Create a list element. */ | |
2030 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); | |
2031 | if (!entry) | |
2032 | return -ENOMEM; | |
2033 | entry->name = kmalloc(strlen(name)+1, GFP_KERNEL); | |
2034 | if (!entry->name) { | |
2035 | kfree(entry); | |
2036 | return -ENOMEM; | |
2037 | } | |
2038 | strcpy(entry->name, name); | |
2039 | ||
07412736 | 2040 | file = proc_create_data(name, 0, smi->proc_dir, proc_ops, data); |
1da177e4 LT |
2041 | if (!file) { |
2042 | kfree(entry->name); | |
2043 | kfree(entry); | |
2044 | rv = -ENOMEM; | |
2045 | } else { | |
ac019151 | 2046 | mutex_lock(&smi->proc_entry_lock); |
1da177e4 LT |
2047 | /* Stick it on the list. */ |
2048 | entry->next = smi->proc_entries; | |
2049 | smi->proc_entries = entry; | |
ac019151 | 2050 | mutex_unlock(&smi->proc_entry_lock); |
1da177e4 | 2051 | } |
3b625943 | 2052 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2053 | |
2054 | return rv; | |
2055 | } | |
c70d7499 | 2056 | EXPORT_SYMBOL(ipmi_smi_add_proc_entry); |
1da177e4 LT |
2057 | |
2058 | static int add_proc_entries(ipmi_smi_t smi, int num) | |
2059 | { | |
2060 | int rv = 0; | |
2061 | ||
3b625943 | 2062 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
2063 | sprintf(smi->proc_dir_name, "%d", num); |
2064 | smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); | |
2065 | if (!smi->proc_dir) | |
2066 | rv = -ENOMEM; | |
1da177e4 LT |
2067 | |
2068 | if (rv == 0) | |
2069 | rv = ipmi_smi_add_proc_entry(smi, "stats", | |
07412736 | 2070 | &smi_stats_proc_ops, |
99b76233 | 2071 | smi); |
1da177e4 LT |
2072 | |
2073 | if (rv == 0) | |
2074 | rv = ipmi_smi_add_proc_entry(smi, "ipmb", | |
07412736 | 2075 | &smi_ipmb_proc_ops, |
99b76233 | 2076 | smi); |
1da177e4 LT |
2077 | |
2078 | if (rv == 0) | |
2079 | rv = ipmi_smi_add_proc_entry(smi, "version", | |
07412736 | 2080 | &smi_version_proc_ops, |
99b76233 | 2081 | smi); |
3b625943 | 2082 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2083 | |
2084 | return rv; | |
2085 | } | |
2086 | ||
2087 | static void remove_proc_entries(ipmi_smi_t smi) | |
2088 | { | |
3b625943 | 2089 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
2090 | struct ipmi_proc_entry *entry; |
2091 | ||
ac019151 | 2092 | mutex_lock(&smi->proc_entry_lock); |
1da177e4 LT |
2093 | while (smi->proc_entries) { |
2094 | entry = smi->proc_entries; | |
2095 | smi->proc_entries = entry->next; | |
2096 | ||
2097 | remove_proc_entry(entry->name, smi->proc_dir); | |
2098 | kfree(entry->name); | |
2099 | kfree(entry); | |
2100 | } | |
ac019151 | 2101 | mutex_unlock(&smi->proc_entry_lock); |
1da177e4 | 2102 | remove_proc_entry(smi->proc_dir_name, proc_ipmi_root); |
3b625943 | 2103 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2104 | } |
2105 | ||
50c812b2 CM |
2106 | static int __find_bmc_guid(struct device *dev, void *data) |
2107 | { | |
2108 | unsigned char *id = data; | |
2109 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2110 | return memcmp(bmc->guid, id, 16) == 0; | |
2111 | } | |
2112 | ||
2113 | static struct bmc_device *ipmi_find_bmc_guid(struct device_driver *drv, | |
2114 | unsigned char *guid) | |
2115 | { | |
2116 | struct device *dev; | |
2117 | ||
2118 | dev = driver_find_device(drv, NULL, guid, __find_bmc_guid); | |
2119 | if (dev) | |
2120 | return dev_get_drvdata(dev); | |
2121 | else | |
2122 | return NULL; | |
2123 | } | |
2124 | ||
2125 | struct prod_dev_id { | |
2126 | unsigned int product_id; | |
2127 | unsigned char device_id; | |
2128 | }; | |
2129 | ||
2130 | static int __find_bmc_prod_dev_id(struct device *dev, void *data) | |
2131 | { | |
2132 | struct prod_dev_id *id = data; | |
2133 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2134 | ||
2135 | return (bmc->id.product_id == id->product_id | |
50c812b2 CM |
2136 | && bmc->id.device_id == id->device_id); |
2137 | } | |
2138 | ||
2139 | static struct bmc_device *ipmi_find_bmc_prod_dev_id( | |
2140 | struct device_driver *drv, | |
f0b55da0 | 2141 | unsigned int product_id, unsigned char device_id) |
50c812b2 CM |
2142 | { |
2143 | struct prod_dev_id id = { | |
2144 | .product_id = product_id, | |
2145 | .device_id = device_id, | |
2146 | }; | |
2147 | struct device *dev; | |
2148 | ||
2149 | dev = driver_find_device(drv, NULL, &id, __find_bmc_prod_dev_id); | |
2150 | if (dev) | |
2151 | return dev_get_drvdata(dev); | |
2152 | else | |
2153 | return NULL; | |
2154 | } | |
2155 | ||
2156 | static ssize_t device_id_show(struct device *dev, | |
2157 | struct device_attribute *attr, | |
2158 | char *buf) | |
2159 | { | |
2160 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2161 | ||
2162 | return snprintf(buf, 10, "%u\n", bmc->id.device_id); | |
2163 | } | |
2164 | ||
2165 | static ssize_t provides_dev_sdrs_show(struct device *dev, | |
2166 | struct device_attribute *attr, | |
2167 | char *buf) | |
2168 | { | |
2169 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2170 | ||
2171 | return snprintf(buf, 10, "%u\n", | |
7947d2cc | 2172 | (bmc->id.device_revision & 0x80) >> 7); |
50c812b2 CM |
2173 | } |
2174 | ||
2175 | static ssize_t revision_show(struct device *dev, struct device_attribute *attr, | |
2176 | char *buf) | |
2177 | { | |
2178 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2179 | ||
2180 | return snprintf(buf, 20, "%u\n", | |
7947d2cc | 2181 | bmc->id.device_revision & 0x0F); |
50c812b2 CM |
2182 | } |
2183 | ||
2184 | static ssize_t firmware_rev_show(struct device *dev, | |
2185 | struct device_attribute *attr, | |
2186 | char *buf) | |
2187 | { | |
2188 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2189 | ||
2190 | return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1, | |
2191 | bmc->id.firmware_revision_2); | |
2192 | } | |
2193 | ||
2194 | static ssize_t ipmi_version_show(struct device *dev, | |
2195 | struct device_attribute *attr, | |
2196 | char *buf) | |
2197 | { | |
2198 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2199 | ||
2200 | return snprintf(buf, 20, "%u.%u\n", | |
2201 | ipmi_version_major(&bmc->id), | |
2202 | ipmi_version_minor(&bmc->id)); | |
2203 | } | |
2204 | ||
2205 | static ssize_t add_dev_support_show(struct device *dev, | |
2206 | struct device_attribute *attr, | |
2207 | char *buf) | |
2208 | { | |
2209 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2210 | ||
2211 | return snprintf(buf, 10, "0x%02x\n", | |
2212 | bmc->id.additional_device_support); | |
2213 | } | |
2214 | ||
2215 | static ssize_t manufacturer_id_show(struct device *dev, | |
2216 | struct device_attribute *attr, | |
2217 | char *buf) | |
2218 | { | |
2219 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2220 | ||
2221 | return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id); | |
2222 | } | |
2223 | ||
2224 | static ssize_t product_id_show(struct device *dev, | |
2225 | struct device_attribute *attr, | |
2226 | char *buf) | |
2227 | { | |
2228 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2229 | ||
2230 | return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id); | |
2231 | } | |
2232 | ||
2233 | static ssize_t aux_firmware_rev_show(struct device *dev, | |
2234 | struct device_attribute *attr, | |
2235 | char *buf) | |
2236 | { | |
2237 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2238 | ||
2239 | return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n", | |
2240 | bmc->id.aux_firmware_revision[3], | |
2241 | bmc->id.aux_firmware_revision[2], | |
2242 | bmc->id.aux_firmware_revision[1], | |
2243 | bmc->id.aux_firmware_revision[0]); | |
2244 | } | |
2245 | ||
2246 | static ssize_t guid_show(struct device *dev, struct device_attribute *attr, | |
2247 | char *buf) | |
2248 | { | |
2249 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2250 | ||
2251 | return snprintf(buf, 100, "%Lx%Lx\n", | |
2252 | (long long) bmc->guid[0], | |
2253 | (long long) bmc->guid[8]); | |
2254 | } | |
2255 | ||
5e59393e | 2256 | static void remove_files(struct bmc_device *bmc) |
50c812b2 | 2257 | { |
f0b55da0 CM |
2258 | if (!bmc->dev) |
2259 | return; | |
2260 | ||
50c812b2 CM |
2261 | device_remove_file(&bmc->dev->dev, |
2262 | &bmc->device_id_attr); | |
2263 | device_remove_file(&bmc->dev->dev, | |
2264 | &bmc->provides_dev_sdrs_attr); | |
2265 | device_remove_file(&bmc->dev->dev, | |
2266 | &bmc->revision_attr); | |
2267 | device_remove_file(&bmc->dev->dev, | |
2268 | &bmc->firmware_rev_attr); | |
2269 | device_remove_file(&bmc->dev->dev, | |
2270 | &bmc->version_attr); | |
2271 | device_remove_file(&bmc->dev->dev, | |
2272 | &bmc->add_dev_support_attr); | |
2273 | device_remove_file(&bmc->dev->dev, | |
2274 | &bmc->manufacturer_id_attr); | |
2275 | device_remove_file(&bmc->dev->dev, | |
2276 | &bmc->product_id_attr); | |
5e59393e | 2277 | |
50c812b2 CM |
2278 | if (bmc->id.aux_firmware_revision_set) |
2279 | device_remove_file(&bmc->dev->dev, | |
2280 | &bmc->aux_firmware_rev_attr); | |
2281 | if (bmc->guid_set) | |
2282 | device_remove_file(&bmc->dev->dev, | |
2283 | &bmc->guid_attr); | |
5e59393e JG |
2284 | } |
2285 | ||
2286 | static void | |
2287 | cleanup_bmc_device(struct kref *ref) | |
2288 | { | |
2289 | struct bmc_device *bmc; | |
2290 | ||
2291 | bmc = container_of(ref, struct bmc_device, refcount); | |
2292 | ||
2293 | remove_files(bmc); | |
1d5636cc | 2294 | platform_device_unregister(bmc->dev); |
50c812b2 CM |
2295 | kfree(bmc); |
2296 | } | |
2297 | ||
2298 | static void ipmi_bmc_unregister(ipmi_smi_t intf) | |
2299 | { | |
2300 | struct bmc_device *bmc = intf->bmc; | |
2301 | ||
759643b8 CM |
2302 | if (intf->sysfs_name) { |
2303 | sysfs_remove_link(&intf->si_dev->kobj, intf->sysfs_name); | |
2304 | kfree(intf->sysfs_name); | |
2305 | intf->sysfs_name = NULL; | |
2306 | } | |
50c812b2 CM |
2307 | if (intf->my_dev_name) { |
2308 | sysfs_remove_link(&bmc->dev->dev.kobj, intf->my_dev_name); | |
2309 | kfree(intf->my_dev_name); | |
2310 | intf->my_dev_name = NULL; | |
2311 | } | |
2312 | ||
2313 | mutex_lock(&ipmidriver_mutex); | |
2314 | kref_put(&bmc->refcount, cleanup_bmc_device); | |
f0b55da0 | 2315 | intf->bmc = NULL; |
50c812b2 CM |
2316 | mutex_unlock(&ipmidriver_mutex); |
2317 | } | |
2318 | ||
5e59393e JG |
2319 | static int create_files(struct bmc_device *bmc) |
2320 | { | |
2321 | int err; | |
2322 | ||
f0b55da0 | 2323 | bmc->device_id_attr.attr.name = "device_id"; |
f0b55da0 CM |
2324 | bmc->device_id_attr.attr.mode = S_IRUGO; |
2325 | bmc->device_id_attr.show = device_id_show; | |
c7df670b | 2326 | sysfs_attr_init(&bmc->device_id_attr.attr); |
f0b55da0 CM |
2327 | |
2328 | bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs"; | |
f0b55da0 CM |
2329 | bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO; |
2330 | bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show; | |
c7df670b | 2331 | sysfs_attr_init(&bmc->provides_dev_sdrs_attr.attr); |
f0b55da0 CM |
2332 | |
2333 | bmc->revision_attr.attr.name = "revision"; | |
f0b55da0 CM |
2334 | bmc->revision_attr.attr.mode = S_IRUGO; |
2335 | bmc->revision_attr.show = revision_show; | |
c7df670b | 2336 | sysfs_attr_init(&bmc->revision_attr.attr); |
f0b55da0 CM |
2337 | |
2338 | bmc->firmware_rev_attr.attr.name = "firmware_revision"; | |
f0b55da0 CM |
2339 | bmc->firmware_rev_attr.attr.mode = S_IRUGO; |
2340 | bmc->firmware_rev_attr.show = firmware_rev_show; | |
c7df670b | 2341 | sysfs_attr_init(&bmc->firmware_rev_attr.attr); |
f0b55da0 CM |
2342 | |
2343 | bmc->version_attr.attr.name = "ipmi_version"; | |
f0b55da0 CM |
2344 | bmc->version_attr.attr.mode = S_IRUGO; |
2345 | bmc->version_attr.show = ipmi_version_show; | |
c7df670b | 2346 | sysfs_attr_init(&bmc->version_attr.attr); |
f0b55da0 CM |
2347 | |
2348 | bmc->add_dev_support_attr.attr.name = "additional_device_support"; | |
f0b55da0 CM |
2349 | bmc->add_dev_support_attr.attr.mode = S_IRUGO; |
2350 | bmc->add_dev_support_attr.show = add_dev_support_show; | |
c7df670b | 2351 | sysfs_attr_init(&bmc->add_dev_support_attr.attr); |
f0b55da0 CM |
2352 | |
2353 | bmc->manufacturer_id_attr.attr.name = "manufacturer_id"; | |
f0b55da0 CM |
2354 | bmc->manufacturer_id_attr.attr.mode = S_IRUGO; |
2355 | bmc->manufacturer_id_attr.show = manufacturer_id_show; | |
c7df670b | 2356 | sysfs_attr_init(&bmc->manufacturer_id_attr.attr); |
f0b55da0 CM |
2357 | |
2358 | bmc->product_id_attr.attr.name = "product_id"; | |
f0b55da0 CM |
2359 | bmc->product_id_attr.attr.mode = S_IRUGO; |
2360 | bmc->product_id_attr.show = product_id_show; | |
c7df670b | 2361 | sysfs_attr_init(&bmc->product_id_attr.attr); |
f0b55da0 CM |
2362 | |
2363 | bmc->guid_attr.attr.name = "guid"; | |
f0b55da0 CM |
2364 | bmc->guid_attr.attr.mode = S_IRUGO; |
2365 | bmc->guid_attr.show = guid_show; | |
c7df670b | 2366 | sysfs_attr_init(&bmc->guid_attr.attr); |
f0b55da0 CM |
2367 | |
2368 | bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision"; | |
f0b55da0 CM |
2369 | bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO; |
2370 | bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show; | |
c7df670b | 2371 | sysfs_attr_init(&bmc->aux_firmware_rev_attr.attr); |
f0b55da0 | 2372 | |
5e59393e JG |
2373 | err = device_create_file(&bmc->dev->dev, |
2374 | &bmc->device_id_attr); | |
c70d7499 CM |
2375 | if (err) |
2376 | goto out; | |
5e59393e JG |
2377 | err = device_create_file(&bmc->dev->dev, |
2378 | &bmc->provides_dev_sdrs_attr); | |
c70d7499 CM |
2379 | if (err) |
2380 | goto out_devid; | |
5e59393e JG |
2381 | err = device_create_file(&bmc->dev->dev, |
2382 | &bmc->revision_attr); | |
c70d7499 CM |
2383 | if (err) |
2384 | goto out_sdrs; | |
5e59393e JG |
2385 | err = device_create_file(&bmc->dev->dev, |
2386 | &bmc->firmware_rev_attr); | |
c70d7499 CM |
2387 | if (err) |
2388 | goto out_rev; | |
5e59393e JG |
2389 | err = device_create_file(&bmc->dev->dev, |
2390 | &bmc->version_attr); | |
c70d7499 CM |
2391 | if (err) |
2392 | goto out_firm; | |
5e59393e JG |
2393 | err = device_create_file(&bmc->dev->dev, |
2394 | &bmc->add_dev_support_attr); | |
c70d7499 CM |
2395 | if (err) |
2396 | goto out_version; | |
5e59393e JG |
2397 | err = device_create_file(&bmc->dev->dev, |
2398 | &bmc->manufacturer_id_attr); | |
c70d7499 CM |
2399 | if (err) |
2400 | goto out_add_dev; | |
5e59393e JG |
2401 | err = device_create_file(&bmc->dev->dev, |
2402 | &bmc->product_id_attr); | |
c70d7499 CM |
2403 | if (err) |
2404 | goto out_manu; | |
5e59393e JG |
2405 | if (bmc->id.aux_firmware_revision_set) { |
2406 | err = device_create_file(&bmc->dev->dev, | |
2407 | &bmc->aux_firmware_rev_attr); | |
c70d7499 CM |
2408 | if (err) |
2409 | goto out_prod_id; | |
5e59393e JG |
2410 | } |
2411 | if (bmc->guid_set) { | |
2412 | err = device_create_file(&bmc->dev->dev, | |
2413 | &bmc->guid_attr); | |
c70d7499 CM |
2414 | if (err) |
2415 | goto out_aux_firm; | |
5e59393e JG |
2416 | } |
2417 | ||
2418 | return 0; | |
2419 | ||
2420 | out_aux_firm: | |
2421 | if (bmc->id.aux_firmware_revision_set) | |
2422 | device_remove_file(&bmc->dev->dev, | |
2423 | &bmc->aux_firmware_rev_attr); | |
2424 | out_prod_id: | |
2425 | device_remove_file(&bmc->dev->dev, | |
2426 | &bmc->product_id_attr); | |
2427 | out_manu: | |
2428 | device_remove_file(&bmc->dev->dev, | |
2429 | &bmc->manufacturer_id_attr); | |
2430 | out_add_dev: | |
2431 | device_remove_file(&bmc->dev->dev, | |
2432 | &bmc->add_dev_support_attr); | |
2433 | out_version: | |
2434 | device_remove_file(&bmc->dev->dev, | |
2435 | &bmc->version_attr); | |
2436 | out_firm: | |
2437 | device_remove_file(&bmc->dev->dev, | |
2438 | &bmc->firmware_rev_attr); | |
2439 | out_rev: | |
2440 | device_remove_file(&bmc->dev->dev, | |
2441 | &bmc->revision_attr); | |
2442 | out_sdrs: | |
2443 | device_remove_file(&bmc->dev->dev, | |
2444 | &bmc->provides_dev_sdrs_attr); | |
2445 | out_devid: | |
2446 | device_remove_file(&bmc->dev->dev, | |
2447 | &bmc->device_id_attr); | |
2448 | out: | |
2449 | return err; | |
2450 | } | |
2451 | ||
759643b8 CM |
2452 | static int ipmi_bmc_register(ipmi_smi_t intf, int ifnum, |
2453 | const char *sysfs_name) | |
50c812b2 CM |
2454 | { |
2455 | int rv; | |
2456 | struct bmc_device *bmc = intf->bmc; | |
2457 | struct bmc_device *old_bmc; | |
2458 | int size; | |
2459 | char dummy[1]; | |
2460 | ||
2461 | mutex_lock(&ipmidriver_mutex); | |
2462 | ||
2463 | /* | |
2464 | * Try to find if there is an bmc_device struct | |
2465 | * representing the interfaced BMC already | |
2466 | */ | |
2467 | if (bmc->guid_set) | |
fe2d5ffc | 2468 | old_bmc = ipmi_find_bmc_guid(&ipmidriver.driver, bmc->guid); |
50c812b2 | 2469 | else |
fe2d5ffc | 2470 | old_bmc = ipmi_find_bmc_prod_dev_id(&ipmidriver.driver, |
50c812b2 CM |
2471 | bmc->id.product_id, |
2472 | bmc->id.device_id); | |
2473 | ||
2474 | /* | |
2475 | * If there is already an bmc_device, free the new one, | |
2476 | * otherwise register the new BMC device | |
2477 | */ | |
2478 | if (old_bmc) { | |
2479 | kfree(bmc); | |
2480 | intf->bmc = old_bmc; | |
2481 | bmc = old_bmc; | |
2482 | ||
2483 | kref_get(&bmc->refcount); | |
2484 | mutex_unlock(&ipmidriver_mutex); | |
2485 | ||
2486 | printk(KERN_INFO | |
2487 | "ipmi: interfacing existing BMC (man_id: 0x%6.6x," | |
2488 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
2489 | bmc->id.manufacturer_id, | |
2490 | bmc->id.product_id, | |
2491 | bmc->id.device_id); | |
2492 | } else { | |
f0b55da0 CM |
2493 | char name[14]; |
2494 | unsigned char orig_dev_id = bmc->id.device_id; | |
2495 | int warn_printed = 0; | |
2496 | ||
2497 | snprintf(name, sizeof(name), | |
2498 | "ipmi_bmc.%4.4x", bmc->id.product_id); | |
2499 | ||
fe2d5ffc | 2500 | while (ipmi_find_bmc_prod_dev_id(&ipmidriver.driver, |
f0b55da0 | 2501 | bmc->id.product_id, |
1d5636cc | 2502 | bmc->id.device_id)) { |
f0b55da0 CM |
2503 | if (!warn_printed) { |
2504 | printk(KERN_WARNING PFX | |
2505 | "This machine has two different BMCs" | |
2506 | " with the same product id and device" | |
2507 | " id. This is an error in the" | |
2508 | " firmware, but incrementing the" | |
2509 | " device id to work around the problem." | |
2510 | " Prod ID = 0x%x, Dev ID = 0x%x\n", | |
2511 | bmc->id.product_id, bmc->id.device_id); | |
2512 | warn_printed = 1; | |
2513 | } | |
2514 | bmc->id.device_id++; /* Wraps at 255 */ | |
2515 | if (bmc->id.device_id == orig_dev_id) { | |
2516 | printk(KERN_ERR PFX | |
2517 | "Out of device ids!\n"); | |
2518 | break; | |
2519 | } | |
2520 | } | |
2521 | ||
2522 | bmc->dev = platform_device_alloc(name, bmc->id.device_id); | |
8a3628d5 | 2523 | if (!bmc->dev) { |
f0b55da0 | 2524 | mutex_unlock(&ipmidriver_mutex); |
50c812b2 CM |
2525 | printk(KERN_ERR |
2526 | "ipmi_msghandler:" | |
2527 | " Unable to allocate platform device\n"); | |
2528 | return -ENOMEM; | |
2529 | } | |
fe2d5ffc | 2530 | bmc->dev->dev.driver = &ipmidriver.driver; |
50c812b2 CM |
2531 | dev_set_drvdata(&bmc->dev->dev, bmc); |
2532 | kref_init(&bmc->refcount); | |
2533 | ||
b48f5457 | 2534 | rv = platform_device_add(bmc->dev); |
50c812b2 CM |
2535 | mutex_unlock(&ipmidriver_mutex); |
2536 | if (rv) { | |
f0b55da0 CM |
2537 | platform_device_put(bmc->dev); |
2538 | bmc->dev = NULL; | |
50c812b2 CM |
2539 | printk(KERN_ERR |
2540 | "ipmi_msghandler:" | |
2541 | " Unable to register bmc device: %d\n", | |
2542 | rv); | |
c70d7499 CM |
2543 | /* |
2544 | * Don't go to out_err, you can only do that if | |
2545 | * the device is registered already. | |
2546 | */ | |
50c812b2 CM |
2547 | return rv; |
2548 | } | |
2549 | ||
5e59393e JG |
2550 | rv = create_files(bmc); |
2551 | if (rv) { | |
2552 | mutex_lock(&ipmidriver_mutex); | |
2553 | platform_device_unregister(bmc->dev); | |
2554 | mutex_unlock(&ipmidriver_mutex); | |
2555 | ||
2556 | return rv; | |
2557 | } | |
50c812b2 | 2558 | |
279fbd0c MS |
2559 | dev_info(intf->si_dev, "Found new BMC (man_id: 0x%6.6x, " |
2560 | "prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
2561 | bmc->id.manufacturer_id, | |
2562 | bmc->id.product_id, | |
2563 | bmc->id.device_id); | |
50c812b2 CM |
2564 | } |
2565 | ||
2566 | /* | |
2567 | * create symlink from system interface device to bmc device | |
2568 | * and back. | |
2569 | */ | |
759643b8 CM |
2570 | intf->sysfs_name = kstrdup(sysfs_name, GFP_KERNEL); |
2571 | if (!intf->sysfs_name) { | |
2572 | rv = -ENOMEM; | |
2573 | printk(KERN_ERR | |
2574 | "ipmi_msghandler: allocate link to BMC: %d\n", | |
2575 | rv); | |
2576 | goto out_err; | |
2577 | } | |
2578 | ||
50c812b2 | 2579 | rv = sysfs_create_link(&intf->si_dev->kobj, |
759643b8 | 2580 | &bmc->dev->dev.kobj, intf->sysfs_name); |
50c812b2 | 2581 | if (rv) { |
759643b8 CM |
2582 | kfree(intf->sysfs_name); |
2583 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2584 | printk(KERN_ERR |
2585 | "ipmi_msghandler: Unable to create bmc symlink: %d\n", | |
2586 | rv); | |
2587 | goto out_err; | |
2588 | } | |
2589 | ||
759643b8 | 2590 | size = snprintf(dummy, 0, "ipmi%d", ifnum); |
50c812b2 CM |
2591 | intf->my_dev_name = kmalloc(size+1, GFP_KERNEL); |
2592 | if (!intf->my_dev_name) { | |
759643b8 CM |
2593 | kfree(intf->sysfs_name); |
2594 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2595 | rv = -ENOMEM; |
2596 | printk(KERN_ERR | |
2597 | "ipmi_msghandler: allocate link from BMC: %d\n", | |
2598 | rv); | |
2599 | goto out_err; | |
2600 | } | |
759643b8 | 2601 | snprintf(intf->my_dev_name, size+1, "ipmi%d", ifnum); |
50c812b2 CM |
2602 | |
2603 | rv = sysfs_create_link(&bmc->dev->dev.kobj, &intf->si_dev->kobj, | |
2604 | intf->my_dev_name); | |
2605 | if (rv) { | |
759643b8 CM |
2606 | kfree(intf->sysfs_name); |
2607 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2608 | kfree(intf->my_dev_name); |
2609 | intf->my_dev_name = NULL; | |
2610 | printk(KERN_ERR | |
2611 | "ipmi_msghandler:" | |
2612 | " Unable to create symlink to bmc: %d\n", | |
2613 | rv); | |
2614 | goto out_err; | |
2615 | } | |
2616 | ||
2617 | return 0; | |
2618 | ||
2619 | out_err: | |
2620 | ipmi_bmc_unregister(intf); | |
2621 | return rv; | |
2622 | } | |
2623 | ||
2624 | static int | |
2625 | send_guid_cmd(ipmi_smi_t intf, int chan) | |
2626 | { | |
2627 | struct kernel_ipmi_msg msg; | |
2628 | struct ipmi_system_interface_addr si; | |
2629 | ||
2630 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2631 | si.channel = IPMI_BMC_CHANNEL; | |
2632 | si.lun = 0; | |
2633 | ||
2634 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2635 | msg.cmd = IPMI_GET_DEVICE_GUID_CMD; | |
2636 | msg.data = NULL; | |
2637 | msg.data_len = 0; | |
2638 | return i_ipmi_request(NULL, | |
2639 | intf, | |
2640 | (struct ipmi_addr *) &si, | |
2641 | 0, | |
2642 | &msg, | |
2643 | intf, | |
2644 | NULL, | |
2645 | NULL, | |
2646 | 0, | |
2647 | intf->channels[0].address, | |
2648 | intf->channels[0].lun, | |
2649 | -1, 0); | |
2650 | } | |
2651 | ||
2652 | static void | |
2653 | guid_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) | |
2654 | { | |
2655 | if ((msg->addr.addr_type != IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
2656 | || (msg->msg.netfn != IPMI_NETFN_APP_RESPONSE) | |
2657 | || (msg->msg.cmd != IPMI_GET_DEVICE_GUID_CMD)) | |
2658 | /* Not for me */ | |
2659 | return; | |
2660 | ||
2661 | if (msg->msg.data[0] != 0) { | |
2662 | /* Error from getting the GUID, the BMC doesn't have one. */ | |
2663 | intf->bmc->guid_set = 0; | |
2664 | goto out; | |
2665 | } | |
2666 | ||
2667 | if (msg->msg.data_len < 17) { | |
2668 | intf->bmc->guid_set = 0; | |
2669 | printk(KERN_WARNING PFX | |
2670 | "guid_handler: The GUID response from the BMC was too" | |
2671 | " short, it was %d but should have been 17. Assuming" | |
2672 | " GUID is not available.\n", | |
2673 | msg->msg.data_len); | |
2674 | goto out; | |
2675 | } | |
2676 | ||
2677 | memcpy(intf->bmc->guid, msg->msg.data, 16); | |
2678 | intf->bmc->guid_set = 1; | |
2679 | out: | |
2680 | wake_up(&intf->waitq); | |
2681 | } | |
2682 | ||
2683 | static void | |
2684 | get_guid(ipmi_smi_t intf) | |
2685 | { | |
2686 | int rv; | |
2687 | ||
2688 | intf->bmc->guid_set = 0x2; | |
2689 | intf->null_user_handler = guid_handler; | |
2690 | rv = send_guid_cmd(intf, 0); | |
2691 | if (rv) | |
2692 | /* Send failed, no GUID available. */ | |
2693 | intf->bmc->guid_set = 0; | |
2694 | wait_event(intf->waitq, intf->bmc->guid_set != 2); | |
2695 | intf->null_user_handler = NULL; | |
2696 | } | |
2697 | ||
1da177e4 LT |
2698 | static int |
2699 | send_channel_info_cmd(ipmi_smi_t intf, int chan) | |
2700 | { | |
2701 | struct kernel_ipmi_msg msg; | |
2702 | unsigned char data[1]; | |
2703 | struct ipmi_system_interface_addr si; | |
2704 | ||
2705 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2706 | si.channel = IPMI_BMC_CHANNEL; | |
2707 | si.lun = 0; | |
2708 | ||
2709 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2710 | msg.cmd = IPMI_GET_CHANNEL_INFO_CMD; | |
2711 | msg.data = data; | |
2712 | msg.data_len = 1; | |
2713 | data[0] = chan; | |
2714 | return i_ipmi_request(NULL, | |
2715 | intf, | |
2716 | (struct ipmi_addr *) &si, | |
2717 | 0, | |
2718 | &msg, | |
56a55ec6 | 2719 | intf, |
1da177e4 LT |
2720 | NULL, |
2721 | NULL, | |
2722 | 0, | |
c14979b9 CM |
2723 | intf->channels[0].address, |
2724 | intf->channels[0].lun, | |
1da177e4 LT |
2725 | -1, 0); |
2726 | } | |
2727 | ||
2728 | static void | |
56a55ec6 | 2729 | channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 LT |
2730 | { |
2731 | int rv = 0; | |
2732 | int chan; | |
2733 | ||
56a55ec6 CM |
2734 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
2735 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
c70d7499 | 2736 | && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD)) { |
1da177e4 | 2737 | /* It's the one we want */ |
56a55ec6 | 2738 | if (msg->msg.data[0] != 0) { |
1da177e4 LT |
2739 | /* Got an error from the channel, just go on. */ |
2740 | ||
56a55ec6 | 2741 | if (msg->msg.data[0] == IPMI_INVALID_COMMAND_ERR) { |
c70d7499 CM |
2742 | /* |
2743 | * If the MC does not support this | |
2744 | * command, that is legal. We just | |
2745 | * assume it has one IPMB at channel | |
2746 | * zero. | |
2747 | */ | |
1da177e4 LT |
2748 | intf->channels[0].medium |
2749 | = IPMI_CHANNEL_MEDIUM_IPMB; | |
2750 | intf->channels[0].protocol | |
2751 | = IPMI_CHANNEL_PROTOCOL_IPMB; | |
2752 | rv = -ENOSYS; | |
2753 | ||
2754 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2755 | wake_up(&intf->waitq); | |
2756 | goto out; | |
2757 | } | |
2758 | goto next_channel; | |
2759 | } | |
56a55ec6 | 2760 | if (msg->msg.data_len < 4) { |
1da177e4 LT |
2761 | /* Message not big enough, just go on. */ |
2762 | goto next_channel; | |
2763 | } | |
2764 | chan = intf->curr_channel; | |
56a55ec6 CM |
2765 | intf->channels[chan].medium = msg->msg.data[2] & 0x7f; |
2766 | intf->channels[chan].protocol = msg->msg.data[3] & 0x1f; | |
1da177e4 | 2767 | |
c70d7499 | 2768 | next_channel: |
1da177e4 LT |
2769 | intf->curr_channel++; |
2770 | if (intf->curr_channel >= IPMI_MAX_CHANNELS) | |
2771 | wake_up(&intf->waitq); | |
2772 | else | |
2773 | rv = send_channel_info_cmd(intf, intf->curr_channel); | |
2774 | ||
2775 | if (rv) { | |
2776 | /* Got an error somehow, just give up. */ | |
2777 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2778 | wake_up(&intf->waitq); | |
2779 | ||
2780 | printk(KERN_WARNING PFX | |
2781 | "Error sending channel information: %d\n", | |
2782 | rv); | |
2783 | } | |
2784 | } | |
2785 | out: | |
2786 | return; | |
2787 | } | |
2788 | ||
fcfa4724 CM |
2789 | void ipmi_poll_interface(ipmi_user_t user) |
2790 | { | |
2791 | ipmi_smi_t intf = user->intf; | |
2792 | ||
2793 | if (intf->handlers->poll) | |
2794 | intf->handlers->poll(intf->send_info); | |
2795 | } | |
c70d7499 | 2796 | EXPORT_SYMBOL(ipmi_poll_interface); |
fcfa4724 | 2797 | |
1da177e4 LT |
2798 | int ipmi_register_smi(struct ipmi_smi_handlers *handlers, |
2799 | void *send_info, | |
50c812b2 CM |
2800 | struct ipmi_device_id *device_id, |
2801 | struct device *si_dev, | |
759643b8 | 2802 | const char *sysfs_name, |
453823ba | 2803 | unsigned char slave_addr) |
1da177e4 LT |
2804 | { |
2805 | int i, j; | |
2806 | int rv; | |
393d2cc3 | 2807 | ipmi_smi_t intf; |
bca0324d | 2808 | ipmi_smi_t tintf; |
bca0324d | 2809 | struct list_head *link; |
1da177e4 | 2810 | |
c70d7499 CM |
2811 | /* |
2812 | * Make sure the driver is actually initialized, this handles | |
2813 | * problems with initialization order. | |
2814 | */ | |
1da177e4 LT |
2815 | if (!initialized) { |
2816 | rv = ipmi_init_msghandler(); | |
2817 | if (rv) | |
2818 | return rv; | |
c70d7499 CM |
2819 | /* |
2820 | * The init code doesn't return an error if it was turned | |
2821 | * off, but it won't initialize. Check that. | |
2822 | */ | |
1da177e4 LT |
2823 | if (!initialized) |
2824 | return -ENODEV; | |
2825 | } | |
2826 | ||
dd00cc48 | 2827 | intf = kzalloc(sizeof(*intf), GFP_KERNEL); |
393d2cc3 | 2828 | if (!intf) |
1da177e4 | 2829 | return -ENOMEM; |
b2c03941 CM |
2830 | |
2831 | intf->ipmi_version_major = ipmi_version_major(device_id); | |
2832 | intf->ipmi_version_minor = ipmi_version_minor(device_id); | |
2833 | ||
50c812b2 CM |
2834 | intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL); |
2835 | if (!intf->bmc) { | |
2836 | kfree(intf); | |
2837 | return -ENOMEM; | |
2838 | } | |
bca0324d | 2839 | intf->intf_num = -1; /* Mark it invalid for now. */ |
393d2cc3 | 2840 | kref_init(&intf->refcount); |
50c812b2 CM |
2841 | intf->bmc->id = *device_id; |
2842 | intf->si_dev = si_dev; | |
393d2cc3 CM |
2843 | for (j = 0; j < IPMI_MAX_CHANNELS; j++) { |
2844 | intf->channels[j].address = IPMI_BMC_SLAVE_ADDR; | |
2845 | intf->channels[j].lun = 2; | |
2846 | } | |
2847 | if (slave_addr != 0) | |
2848 | intf->channels[0].address = slave_addr; | |
2849 | INIT_LIST_HEAD(&intf->users); | |
2850 | intf->handlers = handlers; | |
2851 | intf->send_info = send_info; | |
2852 | spin_lock_init(&intf->seq_lock); | |
2853 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) { | |
2854 | intf->seq_table[j].inuse = 0; | |
2855 | intf->seq_table[j].seqid = 0; | |
2856 | } | |
2857 | intf->curr_seq = 0; | |
2858 | #ifdef CONFIG_PROC_FS | |
ac019151 | 2859 | mutex_init(&intf->proc_entry_lock); |
393d2cc3 CM |
2860 | #endif |
2861 | spin_lock_init(&intf->waiting_msgs_lock); | |
2862 | INIT_LIST_HEAD(&intf->waiting_msgs); | |
2863 | spin_lock_init(&intf->events_lock); | |
2864 | INIT_LIST_HEAD(&intf->waiting_events); | |
2865 | intf->waiting_events_count = 0; | |
d6dfd131 | 2866 | mutex_init(&intf->cmd_rcvrs_mutex); |
b9675136 | 2867 | spin_lock_init(&intf->maintenance_mode_lock); |
393d2cc3 CM |
2868 | INIT_LIST_HEAD(&intf->cmd_rcvrs); |
2869 | init_waitqueue_head(&intf->waitq); | |
b2655f26 KB |
2870 | for (i = 0; i < IPMI_NUM_STATS; i++) |
2871 | atomic_set(&intf->stats[i], 0); | |
393d2cc3 | 2872 | |
393d2cc3 | 2873 | intf->proc_dir = NULL; |
1da177e4 | 2874 | |
b2c03941 | 2875 | mutex_lock(&smi_watchers_mutex); |
bca0324d CM |
2876 | mutex_lock(&ipmi_interfaces_mutex); |
2877 | /* Look for a hole in the numbers. */ | |
2878 | i = 0; | |
2879 | link = &ipmi_interfaces; | |
2880 | list_for_each_entry_rcu(tintf, &ipmi_interfaces, link) { | |
2881 | if (tintf->intf_num != i) { | |
2882 | link = &tintf->link; | |
1da177e4 LT |
2883 | break; |
2884 | } | |
bca0324d | 2885 | i++; |
1da177e4 | 2886 | } |
bca0324d CM |
2887 | /* Add the new interface in numeric order. */ |
2888 | if (i == 0) | |
2889 | list_add_rcu(&intf->link, &ipmi_interfaces); | |
2890 | else | |
2891 | list_add_tail_rcu(&intf->link, link); | |
1da177e4 | 2892 | |
453823ba CM |
2893 | rv = handlers->start_processing(send_info, intf); |
2894 | if (rv) | |
2895 | goto out; | |
1da177e4 | 2896 | |
50c812b2 CM |
2897 | get_guid(intf); |
2898 | ||
b2c03941 | 2899 | if ((intf->ipmi_version_major > 1) |
c70d7499 CM |
2900 | || ((intf->ipmi_version_major == 1) |
2901 | && (intf->ipmi_version_minor >= 5))) { | |
2902 | /* | |
2903 | * Start scanning the channels to see what is | |
2904 | * available. | |
2905 | */ | |
393d2cc3 CM |
2906 | intf->null_user_handler = channel_handler; |
2907 | intf->curr_channel = 0; | |
2908 | rv = send_channel_info_cmd(intf, 0); | |
2909 | if (rv) | |
2910 | goto out; | |
1da177e4 | 2911 | |
393d2cc3 CM |
2912 | /* Wait for the channel info to be read. */ |
2913 | wait_event(intf->waitq, | |
2914 | intf->curr_channel >= IPMI_MAX_CHANNELS); | |
50c812b2 | 2915 | intf->null_user_handler = NULL; |
393d2cc3 CM |
2916 | } else { |
2917 | /* Assume a single IPMB channel at zero. */ | |
2918 | intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; | |
2919 | intf->channels[0].protocol = IPMI_CHANNEL_PROTOCOL_IPMB; | |
9a2845c4 | 2920 | intf->curr_channel = IPMI_MAX_CHANNELS; |
1da177e4 LT |
2921 | } |
2922 | ||
393d2cc3 CM |
2923 | if (rv == 0) |
2924 | rv = add_proc_entries(intf, i); | |
1da177e4 | 2925 | |
759643b8 | 2926 | rv = ipmi_bmc_register(intf, i, sysfs_name); |
50c812b2 | 2927 | |
393d2cc3 | 2928 | out: |
1da177e4 | 2929 | if (rv) { |
393d2cc3 CM |
2930 | if (intf->proc_dir) |
2931 | remove_proc_entries(intf); | |
b2c03941 | 2932 | intf->handlers = NULL; |
bca0324d CM |
2933 | list_del_rcu(&intf->link); |
2934 | mutex_unlock(&ipmi_interfaces_mutex); | |
b2c03941 | 2935 | mutex_unlock(&smi_watchers_mutex); |
bca0324d | 2936 | synchronize_rcu(); |
393d2cc3 | 2937 | kref_put(&intf->refcount, intf_free); |
393d2cc3 | 2938 | } else { |
78ba2faf CM |
2939 | /* |
2940 | * Keep memory order straight for RCU readers. Make | |
2941 | * sure everything else is committed to memory before | |
2942 | * setting intf_num to mark the interface valid. | |
2943 | */ | |
2944 | smp_wmb(); | |
bca0324d CM |
2945 | intf->intf_num = i; |
2946 | mutex_unlock(&ipmi_interfaces_mutex); | |
78ba2faf | 2947 | /* After this point the interface is legal to use. */ |
50c812b2 | 2948 | call_smi_watchers(i, intf->si_dev); |
b2c03941 | 2949 | mutex_unlock(&smi_watchers_mutex); |
1da177e4 LT |
2950 | } |
2951 | ||
2952 | return rv; | |
2953 | } | |
c70d7499 | 2954 | EXPORT_SYMBOL(ipmi_register_smi); |
1da177e4 | 2955 | |
b2c03941 CM |
2956 | static void cleanup_smi_msgs(ipmi_smi_t intf) |
2957 | { | |
2958 | int i; | |
2959 | struct seq_table *ent; | |
2960 | ||
2961 | /* No need for locks, the interface is down. */ | |
2962 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { | |
2963 | ent = &(intf->seq_table[i]); | |
2964 | if (!ent->inuse) | |
2965 | continue; | |
2966 | deliver_err_response(ent->recv_msg, IPMI_ERR_UNSPECIFIED); | |
2967 | } | |
2968 | } | |
2969 | ||
1da177e4 LT |
2970 | int ipmi_unregister_smi(ipmi_smi_t intf) |
2971 | { | |
1da177e4 | 2972 | struct ipmi_smi_watcher *w; |
b2c03941 | 2973 | int intf_num = intf->intf_num; |
1da177e4 | 2974 | |
50c812b2 CM |
2975 | ipmi_bmc_unregister(intf); |
2976 | ||
b2c03941 | 2977 | mutex_lock(&smi_watchers_mutex); |
bca0324d | 2978 | mutex_lock(&ipmi_interfaces_mutex); |
b2c03941 CM |
2979 | intf->intf_num = -1; |
2980 | intf->handlers = NULL; | |
bca0324d CM |
2981 | list_del_rcu(&intf->link); |
2982 | mutex_unlock(&ipmi_interfaces_mutex); | |
2983 | synchronize_rcu(); | |
1da177e4 | 2984 | |
b2c03941 CM |
2985 | cleanup_smi_msgs(intf); |
2986 | ||
393d2cc3 | 2987 | remove_proc_entries(intf); |
1da177e4 | 2988 | |
c70d7499 CM |
2989 | /* |
2990 | * Call all the watcher interfaces to tell them that | |
2991 | * an interface is gone. | |
2992 | */ | |
393d2cc3 | 2993 | list_for_each_entry(w, &smi_watchers, link) |
b2c03941 CM |
2994 | w->smi_gone(intf_num); |
2995 | mutex_unlock(&smi_watchers_mutex); | |
393d2cc3 | 2996 | |
393d2cc3 | 2997 | kref_put(&intf->refcount, intf_free); |
1da177e4 LT |
2998 | return 0; |
2999 | } | |
c70d7499 | 3000 | EXPORT_SYMBOL(ipmi_unregister_smi); |
1da177e4 LT |
3001 | |
3002 | static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf, | |
3003 | struct ipmi_smi_msg *msg) | |
3004 | { | |
3005 | struct ipmi_ipmb_addr ipmb_addr; | |
3006 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 | 3007 | |
c70d7499 CM |
3008 | /* |
3009 | * This is 11, not 10, because the response must contain a | |
3010 | * completion code. | |
3011 | */ | |
1da177e4 LT |
3012 | if (msg->rsp_size < 11) { |
3013 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3014 | ipmi_inc_stat(intf, invalid_ipmb_responses); |
1da177e4 LT |
3015 | return 0; |
3016 | } | |
3017 | ||
3018 | if (msg->rsp[2] != 0) { | |
3019 | /* An error getting the response, just ignore it. */ | |
3020 | return 0; | |
3021 | } | |
3022 | ||
3023 | ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; | |
3024 | ipmb_addr.slave_addr = msg->rsp[6]; | |
3025 | ipmb_addr.channel = msg->rsp[3] & 0x0f; | |
3026 | ipmb_addr.lun = msg->rsp[7] & 3; | |
3027 | ||
c70d7499 CM |
3028 | /* |
3029 | * It's a response from a remote entity. Look up the sequence | |
3030 | * number and handle the response. | |
3031 | */ | |
1da177e4 LT |
3032 | if (intf_find_seq(intf, |
3033 | msg->rsp[7] >> 2, | |
3034 | msg->rsp[3] & 0x0f, | |
3035 | msg->rsp[8], | |
3036 | (msg->rsp[4] >> 2) & (~1), | |
3037 | (struct ipmi_addr *) &(ipmb_addr), | |
c70d7499 CM |
3038 | &recv_msg)) { |
3039 | /* | |
3040 | * We were unable to find the sequence number, | |
3041 | * so just nuke the message. | |
3042 | */ | |
b2655f26 | 3043 | ipmi_inc_stat(intf, unhandled_ipmb_responses); |
1da177e4 LT |
3044 | return 0; |
3045 | } | |
3046 | ||
3047 | memcpy(recv_msg->msg_data, | |
3048 | &(msg->rsp[9]), | |
3049 | msg->rsp_size - 9); | |
c70d7499 CM |
3050 | /* |
3051 | * The other fields matched, so no need to set them, except | |
3052 | * for netfn, which needs to be the response that was | |
3053 | * returned, not the request value. | |
3054 | */ | |
1da177e4 LT |
3055 | recv_msg->msg.netfn = msg->rsp[4] >> 2; |
3056 | recv_msg->msg.data = recv_msg->msg_data; | |
3057 | recv_msg->msg.data_len = msg->rsp_size - 10; | |
3058 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
b2655f26 | 3059 | ipmi_inc_stat(intf, handled_ipmb_responses); |
1da177e4 LT |
3060 | deliver_response(recv_msg); |
3061 | ||
3062 | return 0; | |
3063 | } | |
3064 | ||
3065 | static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, | |
3066 | struct ipmi_smi_msg *msg) | |
3067 | { | |
393d2cc3 CM |
3068 | struct cmd_rcvr *rcvr; |
3069 | int rv = 0; | |
3070 | unsigned char netfn; | |
3071 | unsigned char cmd; | |
c69c3127 | 3072 | unsigned char chan; |
393d2cc3 CM |
3073 | ipmi_user_t user = NULL; |
3074 | struct ipmi_ipmb_addr *ipmb_addr; | |
3075 | struct ipmi_recv_msg *recv_msg; | |
b2c03941 | 3076 | struct ipmi_smi_handlers *handlers; |
1da177e4 LT |
3077 | |
3078 | if (msg->rsp_size < 10) { | |
3079 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3080 | ipmi_inc_stat(intf, invalid_commands); |
1da177e4 LT |
3081 | return 0; |
3082 | } | |
3083 | ||
3084 | if (msg->rsp[2] != 0) { | |
3085 | /* An error getting the response, just ignore it. */ | |
3086 | return 0; | |
3087 | } | |
3088 | ||
3089 | netfn = msg->rsp[4] >> 2; | |
3090 | cmd = msg->rsp[8]; | |
c69c3127 | 3091 | chan = msg->rsp[3] & 0xf; |
1da177e4 | 3092 | |
e61fb5b6 | 3093 | rcu_read_lock(); |
c69c3127 | 3094 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
393d2cc3 CM |
3095 | if (rcvr) { |
3096 | user = rcvr->user; | |
3097 | kref_get(&user->refcount); | |
3098 | } else | |
3099 | user = NULL; | |
e61fb5b6 | 3100 | rcu_read_unlock(); |
1da177e4 LT |
3101 | |
3102 | if (user == NULL) { | |
3103 | /* We didn't find a user, deliver an error response. */ | |
b2655f26 | 3104 | ipmi_inc_stat(intf, unhandled_commands); |
1da177e4 LT |
3105 | |
3106 | msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
3107 | msg->data[1] = IPMI_SEND_MSG_CMD; | |
3108 | msg->data[2] = msg->rsp[3]; | |
3109 | msg->data[3] = msg->rsp[6]; | |
c70d7499 | 3110 | msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); |
1da177e4 | 3111 | msg->data[5] = ipmb_checksum(&(msg->data[3]), 2); |
c14979b9 | 3112 | msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address; |
c70d7499 CM |
3113 | /* rqseq/lun */ |
3114 | msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); | |
1da177e4 LT |
3115 | msg->data[8] = msg->rsp[8]; /* cmd */ |
3116 | msg->data[9] = IPMI_INVALID_CMD_COMPLETION_CODE; | |
3117 | msg->data[10] = ipmb_checksum(&(msg->data[6]), 4); | |
3118 | msg->data_size = 11; | |
3119 | ||
3120 | #ifdef DEBUG_MSGING | |
3121 | { | |
3122 | int m; | |
3123 | printk("Invalid command:"); | |
e8b33617 | 3124 | for (m = 0; m < msg->data_size; m++) |
1da177e4 LT |
3125 | printk(" %2.2x", msg->data[m]); |
3126 | printk("\n"); | |
3127 | } | |
3128 | #endif | |
b2c03941 CM |
3129 | rcu_read_lock(); |
3130 | handlers = intf->handlers; | |
3131 | if (handlers) { | |
3132 | handlers->sender(intf->send_info, msg, 0); | |
c70d7499 CM |
3133 | /* |
3134 | * We used the message, so return the value | |
3135 | * that causes it to not be freed or | |
3136 | * queued. | |
3137 | */ | |
b2c03941 CM |
3138 | rv = -1; |
3139 | } | |
3140 | rcu_read_unlock(); | |
1da177e4 LT |
3141 | } else { |
3142 | /* Deliver the message to the user. */ | |
b2655f26 | 3143 | ipmi_inc_stat(intf, handled_commands); |
1da177e4 LT |
3144 | |
3145 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3146 | if (!recv_msg) { |
c70d7499 CM |
3147 | /* |
3148 | * We couldn't allocate memory for the | |
3149 | * message, so requeue it for handling | |
3150 | * later. | |
3151 | */ | |
1da177e4 | 3152 | rv = 1; |
393d2cc3 | 3153 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
3154 | } else { |
3155 | /* Extract the source address from the data. */ | |
3156 | ipmb_addr = (struct ipmi_ipmb_addr *) &recv_msg->addr; | |
3157 | ipmb_addr->addr_type = IPMI_IPMB_ADDR_TYPE; | |
3158 | ipmb_addr->slave_addr = msg->rsp[6]; | |
3159 | ipmb_addr->lun = msg->rsp[7] & 3; | |
3160 | ipmb_addr->channel = msg->rsp[3] & 0xf; | |
3161 | ||
c70d7499 CM |
3162 | /* |
3163 | * Extract the rest of the message information | |
3164 | * from the IPMB header. | |
3165 | */ | |
1da177e4 LT |
3166 | recv_msg->user = user; |
3167 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
3168 | recv_msg->msgid = msg->rsp[7] >> 2; | |
3169 | recv_msg->msg.netfn = msg->rsp[4] >> 2; | |
3170 | recv_msg->msg.cmd = msg->rsp[8]; | |
3171 | recv_msg->msg.data = recv_msg->msg_data; | |
3172 | ||
c70d7499 CM |
3173 | /* |
3174 | * We chop off 10, not 9 bytes because the checksum | |
3175 | * at the end also needs to be removed. | |
3176 | */ | |
1da177e4 LT |
3177 | recv_msg->msg.data_len = msg->rsp_size - 10; |
3178 | memcpy(recv_msg->msg_data, | |
3179 | &(msg->rsp[9]), | |
3180 | msg->rsp_size - 10); | |
3181 | deliver_response(recv_msg); | |
3182 | } | |
3183 | } | |
3184 | ||
3185 | return rv; | |
3186 | } | |
3187 | ||
3188 | static int handle_lan_get_msg_rsp(ipmi_smi_t intf, | |
3189 | struct ipmi_smi_msg *msg) | |
3190 | { | |
3191 | struct ipmi_lan_addr lan_addr; | |
3192 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 LT |
3193 | |
3194 | ||
c70d7499 CM |
3195 | /* |
3196 | * This is 13, not 12, because the response must contain a | |
3197 | * completion code. | |
3198 | */ | |
1da177e4 LT |
3199 | if (msg->rsp_size < 13) { |
3200 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3201 | ipmi_inc_stat(intf, invalid_lan_responses); |
1da177e4 LT |
3202 | return 0; |
3203 | } | |
3204 | ||
3205 | if (msg->rsp[2] != 0) { | |
3206 | /* An error getting the response, just ignore it. */ | |
3207 | return 0; | |
3208 | } | |
3209 | ||
3210 | lan_addr.addr_type = IPMI_LAN_ADDR_TYPE; | |
3211 | lan_addr.session_handle = msg->rsp[4]; | |
3212 | lan_addr.remote_SWID = msg->rsp[8]; | |
3213 | lan_addr.local_SWID = msg->rsp[5]; | |
3214 | lan_addr.channel = msg->rsp[3] & 0x0f; | |
3215 | lan_addr.privilege = msg->rsp[3] >> 4; | |
3216 | lan_addr.lun = msg->rsp[9] & 3; | |
3217 | ||
c70d7499 CM |
3218 | /* |
3219 | * It's a response from a remote entity. Look up the sequence | |
3220 | * number and handle the response. | |
3221 | */ | |
1da177e4 LT |
3222 | if (intf_find_seq(intf, |
3223 | msg->rsp[9] >> 2, | |
3224 | msg->rsp[3] & 0x0f, | |
3225 | msg->rsp[10], | |
3226 | (msg->rsp[6] >> 2) & (~1), | |
3227 | (struct ipmi_addr *) &(lan_addr), | |
c70d7499 CM |
3228 | &recv_msg)) { |
3229 | /* | |
3230 | * We were unable to find the sequence number, | |
3231 | * so just nuke the message. | |
3232 | */ | |
b2655f26 | 3233 | ipmi_inc_stat(intf, unhandled_lan_responses); |
1da177e4 LT |
3234 | return 0; |
3235 | } | |
3236 | ||
3237 | memcpy(recv_msg->msg_data, | |
3238 | &(msg->rsp[11]), | |
3239 | msg->rsp_size - 11); | |
c70d7499 CM |
3240 | /* |
3241 | * The other fields matched, so no need to set them, except | |
3242 | * for netfn, which needs to be the response that was | |
3243 | * returned, not the request value. | |
3244 | */ | |
1da177e4 LT |
3245 | recv_msg->msg.netfn = msg->rsp[6] >> 2; |
3246 | recv_msg->msg.data = recv_msg->msg_data; | |
3247 | recv_msg->msg.data_len = msg->rsp_size - 12; | |
3248 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
b2655f26 | 3249 | ipmi_inc_stat(intf, handled_lan_responses); |
1da177e4 LT |
3250 | deliver_response(recv_msg); |
3251 | ||
3252 | return 0; | |
3253 | } | |
3254 | ||
3255 | static int handle_lan_get_msg_cmd(ipmi_smi_t intf, | |
3256 | struct ipmi_smi_msg *msg) | |
3257 | { | |
393d2cc3 CM |
3258 | struct cmd_rcvr *rcvr; |
3259 | int rv = 0; | |
3260 | unsigned char netfn; | |
3261 | unsigned char cmd; | |
c69c3127 | 3262 | unsigned char chan; |
393d2cc3 CM |
3263 | ipmi_user_t user = NULL; |
3264 | struct ipmi_lan_addr *lan_addr; | |
3265 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 LT |
3266 | |
3267 | if (msg->rsp_size < 12) { | |
3268 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3269 | ipmi_inc_stat(intf, invalid_commands); |
1da177e4 LT |
3270 | return 0; |
3271 | } | |
3272 | ||
3273 | if (msg->rsp[2] != 0) { | |
3274 | /* An error getting the response, just ignore it. */ | |
3275 | return 0; | |
3276 | } | |
3277 | ||
3278 | netfn = msg->rsp[6] >> 2; | |
3279 | cmd = msg->rsp[10]; | |
c69c3127 | 3280 | chan = msg->rsp[3] & 0xf; |
1da177e4 | 3281 | |
e61fb5b6 | 3282 | rcu_read_lock(); |
c69c3127 | 3283 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
393d2cc3 CM |
3284 | if (rcvr) { |
3285 | user = rcvr->user; | |
3286 | kref_get(&user->refcount); | |
3287 | } else | |
3288 | user = NULL; | |
e61fb5b6 | 3289 | rcu_read_unlock(); |
1da177e4 LT |
3290 | |
3291 | if (user == NULL) { | |
393d2cc3 | 3292 | /* We didn't find a user, just give up. */ |
b2655f26 | 3293 | ipmi_inc_stat(intf, unhandled_commands); |
1da177e4 | 3294 | |
c70d7499 CM |
3295 | /* |
3296 | * Don't do anything with these messages, just allow | |
3297 | * them to be freed. | |
3298 | */ | |
3299 | rv = 0; | |
1da177e4 LT |
3300 | } else { |
3301 | /* Deliver the message to the user. */ | |
b2655f26 | 3302 | ipmi_inc_stat(intf, handled_commands); |
1da177e4 LT |
3303 | |
3304 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3305 | if (!recv_msg) { |
c70d7499 CM |
3306 | /* |
3307 | * We couldn't allocate memory for the | |
3308 | * message, so requeue it for handling later. | |
3309 | */ | |
1da177e4 | 3310 | rv = 1; |
393d2cc3 | 3311 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
3312 | } else { |
3313 | /* Extract the source address from the data. */ | |
3314 | lan_addr = (struct ipmi_lan_addr *) &recv_msg->addr; | |
3315 | lan_addr->addr_type = IPMI_LAN_ADDR_TYPE; | |
3316 | lan_addr->session_handle = msg->rsp[4]; | |
3317 | lan_addr->remote_SWID = msg->rsp[8]; | |
3318 | lan_addr->local_SWID = msg->rsp[5]; | |
3319 | lan_addr->lun = msg->rsp[9] & 3; | |
3320 | lan_addr->channel = msg->rsp[3] & 0xf; | |
3321 | lan_addr->privilege = msg->rsp[3] >> 4; | |
3322 | ||
c70d7499 CM |
3323 | /* |
3324 | * Extract the rest of the message information | |
3325 | * from the IPMB header. | |
3326 | */ | |
1da177e4 LT |
3327 | recv_msg->user = user; |
3328 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
3329 | recv_msg->msgid = msg->rsp[9] >> 2; | |
3330 | recv_msg->msg.netfn = msg->rsp[6] >> 2; | |
3331 | recv_msg->msg.cmd = msg->rsp[10]; | |
3332 | recv_msg->msg.data = recv_msg->msg_data; | |
3333 | ||
c70d7499 CM |
3334 | /* |
3335 | * We chop off 12, not 11 bytes because the checksum | |
3336 | * at the end also needs to be removed. | |
3337 | */ | |
1da177e4 LT |
3338 | recv_msg->msg.data_len = msg->rsp_size - 12; |
3339 | memcpy(recv_msg->msg_data, | |
3340 | &(msg->rsp[11]), | |
3341 | msg->rsp_size - 12); | |
3342 | deliver_response(recv_msg); | |
3343 | } | |
3344 | } | |
3345 | ||
3346 | return rv; | |
3347 | } | |
3348 | ||
4dec302f | 3349 | /* |
3350 | * This routine will handle "Get Message" command responses with | |
3351 | * channels that use an OEM Medium. The message format belongs to | |
3352 | * the OEM. See IPMI 2.0 specification, Chapter 6 and | |
3353 | * Chapter 22, sections 22.6 and 22.24 for more details. | |
3354 | */ | |
3355 | static int handle_oem_get_msg_cmd(ipmi_smi_t intf, | |
3356 | struct ipmi_smi_msg *msg) | |
3357 | { | |
3358 | struct cmd_rcvr *rcvr; | |
3359 | int rv = 0; | |
3360 | unsigned char netfn; | |
3361 | unsigned char cmd; | |
3362 | unsigned char chan; | |
3363 | ipmi_user_t user = NULL; | |
3364 | struct ipmi_system_interface_addr *smi_addr; | |
3365 | struct ipmi_recv_msg *recv_msg; | |
3366 | ||
3367 | /* | |
3368 | * We expect the OEM SW to perform error checking | |
3369 | * so we just do some basic sanity checks | |
3370 | */ | |
3371 | if (msg->rsp_size < 4) { | |
3372 | /* Message not big enough, just ignore it. */ | |
3373 | ipmi_inc_stat(intf, invalid_commands); | |
3374 | return 0; | |
3375 | } | |
3376 | ||
3377 | if (msg->rsp[2] != 0) { | |
3378 | /* An error getting the response, just ignore it. */ | |
3379 | return 0; | |
3380 | } | |
3381 | ||
3382 | /* | |
3383 | * This is an OEM Message so the OEM needs to know how | |
3384 | * handle the message. We do no interpretation. | |
3385 | */ | |
3386 | netfn = msg->rsp[0] >> 2; | |
3387 | cmd = msg->rsp[1]; | |
3388 | chan = msg->rsp[3] & 0xf; | |
3389 | ||
3390 | rcu_read_lock(); | |
3391 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); | |
3392 | if (rcvr) { | |
3393 | user = rcvr->user; | |
3394 | kref_get(&user->refcount); | |
3395 | } else | |
3396 | user = NULL; | |
3397 | rcu_read_unlock(); | |
3398 | ||
3399 | if (user == NULL) { | |
3400 | /* We didn't find a user, just give up. */ | |
3401 | ipmi_inc_stat(intf, unhandled_commands); | |
3402 | ||
3403 | /* | |
3404 | * Don't do anything with these messages, just allow | |
3405 | * them to be freed. | |
3406 | */ | |
3407 | ||
3408 | rv = 0; | |
3409 | } else { | |
3410 | /* Deliver the message to the user. */ | |
3411 | ipmi_inc_stat(intf, handled_commands); | |
3412 | ||
3413 | recv_msg = ipmi_alloc_recv_msg(); | |
3414 | if (!recv_msg) { | |
3415 | /* | |
3416 | * We couldn't allocate memory for the | |
3417 | * message, so requeue it for handling | |
3418 | * later. | |
3419 | */ | |
3420 | rv = 1; | |
3421 | kref_put(&user->refcount, free_user); | |
3422 | } else { | |
3423 | /* | |
3424 | * OEM Messages are expected to be delivered via | |
3425 | * the system interface to SMS software. We might | |
3426 | * need to visit this again depending on OEM | |
3427 | * requirements | |
3428 | */ | |
3429 | smi_addr = ((struct ipmi_system_interface_addr *) | |
3430 | &(recv_msg->addr)); | |
3431 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3432 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3433 | smi_addr->lun = msg->rsp[0] & 3; | |
3434 | ||
3435 | recv_msg->user = user; | |
3436 | recv_msg->user_msg_data = NULL; | |
3437 | recv_msg->recv_type = IPMI_OEM_RECV_TYPE; | |
3438 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3439 | recv_msg->msg.cmd = msg->rsp[1]; | |
3440 | recv_msg->msg.data = recv_msg->msg_data; | |
3441 | ||
3442 | /* | |
3443 | * The message starts at byte 4 which follows the | |
3444 | * the Channel Byte in the "GET MESSAGE" command | |
3445 | */ | |
3446 | recv_msg->msg.data_len = msg->rsp_size - 4; | |
3447 | memcpy(recv_msg->msg_data, | |
3448 | &(msg->rsp[4]), | |
3449 | msg->rsp_size - 4); | |
3450 | deliver_response(recv_msg); | |
3451 | } | |
3452 | } | |
3453 | ||
3454 | return rv; | |
3455 | } | |
3456 | ||
1da177e4 LT |
3457 | static void copy_event_into_recv_msg(struct ipmi_recv_msg *recv_msg, |
3458 | struct ipmi_smi_msg *msg) | |
3459 | { | |
3460 | struct ipmi_system_interface_addr *smi_addr; | |
c70d7499 | 3461 | |
1da177e4 LT |
3462 | recv_msg->msgid = 0; |
3463 | smi_addr = (struct ipmi_system_interface_addr *) &(recv_msg->addr); | |
3464 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3465 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3466 | smi_addr->lun = msg->rsp[0] & 3; | |
3467 | recv_msg->recv_type = IPMI_ASYNC_EVENT_RECV_TYPE; | |
3468 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3469 | recv_msg->msg.cmd = msg->rsp[1]; | |
3470 | memcpy(recv_msg->msg_data, &(msg->rsp[3]), msg->rsp_size - 3); | |
3471 | recv_msg->msg.data = recv_msg->msg_data; | |
3472 | recv_msg->msg.data_len = msg->rsp_size - 3; | |
3473 | } | |
3474 | ||
1da177e4 LT |
3475 | static int handle_read_event_rsp(ipmi_smi_t intf, |
3476 | struct ipmi_smi_msg *msg) | |
3477 | { | |
3478 | struct ipmi_recv_msg *recv_msg, *recv_msg2; | |
3479 | struct list_head msgs; | |
3480 | ipmi_user_t user; | |
3481 | int rv = 0; | |
3482 | int deliver_count = 0; | |
3483 | unsigned long flags; | |
3484 | ||
3485 | if (msg->rsp_size < 19) { | |
3486 | /* Message is too small to be an IPMB event. */ | |
b2655f26 | 3487 | ipmi_inc_stat(intf, invalid_events); |
1da177e4 LT |
3488 | return 0; |
3489 | } | |
3490 | ||
3491 | if (msg->rsp[2] != 0) { | |
3492 | /* An error getting the event, just ignore it. */ | |
3493 | return 0; | |
3494 | } | |
3495 | ||
3496 | INIT_LIST_HEAD(&msgs); | |
3497 | ||
393d2cc3 | 3498 | spin_lock_irqsave(&intf->events_lock, flags); |
1da177e4 | 3499 | |
b2655f26 | 3500 | ipmi_inc_stat(intf, events); |
1da177e4 | 3501 | |
c70d7499 CM |
3502 | /* |
3503 | * Allocate and fill in one message for every user that is | |
3504 | * getting events. | |
3505 | */ | |
393d2cc3 CM |
3506 | rcu_read_lock(); |
3507 | list_for_each_entry_rcu(user, &intf->users, link) { | |
8a3628d5 | 3508 | if (!user->gets_events) |
1da177e4 LT |
3509 | continue; |
3510 | ||
3511 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3512 | if (!recv_msg) { |
393d2cc3 | 3513 | rcu_read_unlock(); |
8a3628d5 CM |
3514 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, |
3515 | link) { | |
1da177e4 LT |
3516 | list_del(&recv_msg->link); |
3517 | ipmi_free_recv_msg(recv_msg); | |
3518 | } | |
c70d7499 CM |
3519 | /* |
3520 | * We couldn't allocate memory for the | |
3521 | * message, so requeue it for handling | |
3522 | * later. | |
3523 | */ | |
1da177e4 LT |
3524 | rv = 1; |
3525 | goto out; | |
3526 | } | |
3527 | ||
3528 | deliver_count++; | |
3529 | ||
3530 | copy_event_into_recv_msg(recv_msg, msg); | |
3531 | recv_msg->user = user; | |
393d2cc3 | 3532 | kref_get(&user->refcount); |
1da177e4 LT |
3533 | list_add_tail(&(recv_msg->link), &msgs); |
3534 | } | |
393d2cc3 | 3535 | rcu_read_unlock(); |
1da177e4 LT |
3536 | |
3537 | if (deliver_count) { | |
3538 | /* Now deliver all the messages. */ | |
3539 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, link) { | |
3540 | list_del(&recv_msg->link); | |
3541 | deliver_response(recv_msg); | |
3542 | } | |
3543 | } else if (intf->waiting_events_count < MAX_EVENTS_IN_QUEUE) { | |
c70d7499 CM |
3544 | /* |
3545 | * No one to receive the message, put it in queue if there's | |
3546 | * not already too many things in the queue. | |
3547 | */ | |
1da177e4 | 3548 | recv_msg = ipmi_alloc_recv_msg(); |
8a3628d5 | 3549 | if (!recv_msg) { |
c70d7499 CM |
3550 | /* |
3551 | * We couldn't allocate memory for the | |
3552 | * message, so requeue it for handling | |
3553 | * later. | |
3554 | */ | |
1da177e4 LT |
3555 | rv = 1; |
3556 | goto out; | |
3557 | } | |
3558 | ||
3559 | copy_event_into_recv_msg(recv_msg, msg); | |
3560 | list_add_tail(&(recv_msg->link), &(intf->waiting_events)); | |
4791c03d | 3561 | intf->waiting_events_count++; |
87ebd06f | 3562 | } else if (!intf->event_msg_printed) { |
c70d7499 CM |
3563 | /* |
3564 | * There's too many things in the queue, discard this | |
3565 | * message. | |
3566 | */ | |
87ebd06f CM |
3567 | printk(KERN_WARNING PFX "Event queue full, discarding" |
3568 | " incoming events\n"); | |
3569 | intf->event_msg_printed = 1; | |
1da177e4 LT |
3570 | } |
3571 | ||
3572 | out: | |
3573 | spin_unlock_irqrestore(&(intf->events_lock), flags); | |
3574 | ||
3575 | return rv; | |
3576 | } | |
3577 | ||
3578 | static int handle_bmc_rsp(ipmi_smi_t intf, | |
3579 | struct ipmi_smi_msg *msg) | |
3580 | { | |
3581 | struct ipmi_recv_msg *recv_msg; | |
393d2cc3 | 3582 | struct ipmi_user *user; |
1da177e4 LT |
3583 | |
3584 | recv_msg = (struct ipmi_recv_msg *) msg->user_data; | |
c70d7499 CM |
3585 | if (recv_msg == NULL) { |
3586 | printk(KERN_WARNING | |
3587 | "IPMI message received with no owner. This\n" | |
3588 | "could be because of a malformed message, or\n" | |
3589 | "because of a hardware error. Contact your\n" | |
3590 | "hardware vender for assistance\n"); | |
56a55ec6 CM |
3591 | return 0; |
3592 | } | |
1da177e4 | 3593 | |
393d2cc3 | 3594 | user = recv_msg->user; |
1da177e4 | 3595 | /* Make sure the user still exists. */ |
393d2cc3 | 3596 | if (user && !user->valid) { |
56a55ec6 | 3597 | /* The user for the message went away, so give up. */ |
b2655f26 | 3598 | ipmi_inc_stat(intf, unhandled_local_responses); |
1da177e4 LT |
3599 | ipmi_free_recv_msg(recv_msg); |
3600 | } else { | |
3601 | struct ipmi_system_interface_addr *smi_addr; | |
3602 | ||
b2655f26 | 3603 | ipmi_inc_stat(intf, handled_local_responses); |
1da177e4 LT |
3604 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
3605 | recv_msg->msgid = msg->msgid; | |
3606 | smi_addr = ((struct ipmi_system_interface_addr *) | |
3607 | &(recv_msg->addr)); | |
3608 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3609 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3610 | smi_addr->lun = msg->rsp[0] & 3; | |
3611 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3612 | recv_msg->msg.cmd = msg->rsp[1]; | |
3613 | memcpy(recv_msg->msg_data, | |
3614 | &(msg->rsp[2]), | |
3615 | msg->rsp_size - 2); | |
3616 | recv_msg->msg.data = recv_msg->msg_data; | |
3617 | recv_msg->msg.data_len = msg->rsp_size - 2; | |
3618 | deliver_response(recv_msg); | |
3619 | } | |
3620 | ||
3621 | return 0; | |
3622 | } | |
3623 | ||
c70d7499 CM |
3624 | /* |
3625 | * Handle a new message. Return 1 if the message should be requeued, | |
3626 | * 0 if the message should be freed, or -1 if the message should not | |
3627 | * be freed or requeued. | |
3628 | */ | |
1da177e4 LT |
3629 | static int handle_new_recv_msg(ipmi_smi_t intf, |
3630 | struct ipmi_smi_msg *msg) | |
3631 | { | |
3632 | int requeue; | |
3633 | int chan; | |
3634 | ||
3635 | #ifdef DEBUG_MSGING | |
3636 | int m; | |
3637 | printk("Recv:"); | |
e8b33617 | 3638 | for (m = 0; m < msg->rsp_size; m++) |
1da177e4 LT |
3639 | printk(" %2.2x", msg->rsp[m]); |
3640 | printk("\n"); | |
3641 | #endif | |
3642 | if (msg->rsp_size < 2) { | |
3643 | /* Message is too small to be correct. */ | |
3644 | printk(KERN_WARNING PFX "BMC returned to small a message" | |
3645 | " for netfn %x cmd %x, got %d bytes\n", | |
3646 | (msg->data[0] >> 2) | 1, msg->data[1], msg->rsp_size); | |
3647 | ||
3648 | /* Generate an error response for the message. */ | |
3649 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3650 | msg->rsp[1] = msg->data[1]; | |
3651 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3652 | msg->rsp_size = 3; | |
c70d7499 CM |
3653 | } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1)) |
3654 | || (msg->rsp[1] != msg->data[1])) { | |
3655 | /* | |
3656 | * The NetFN and Command in the response is not even | |
3657 | * marginally correct. | |
3658 | */ | |
1da177e4 LT |
3659 | printk(KERN_WARNING PFX "BMC returned incorrect response," |
3660 | " expected netfn %x cmd %x, got netfn %x cmd %x\n", | |
3661 | (msg->data[0] >> 2) | 1, msg->data[1], | |
3662 | msg->rsp[0] >> 2, msg->rsp[1]); | |
3663 | ||
3664 | /* Generate an error response for the message. */ | |
3665 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3666 | msg->rsp[1] = msg->data[1]; | |
3667 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3668 | msg->rsp_size = 3; | |
3669 | } | |
3670 | ||
3671 | if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
3672 | && (msg->rsp[1] == IPMI_SEND_MSG_CMD) | |
c70d7499 CM |
3673 | && (msg->user_data != NULL)) { |
3674 | /* | |
3675 | * It's a response to a response we sent. For this we | |
3676 | * deliver a send message response to the user. | |
3677 | */ | |
393d2cc3 | 3678 | struct ipmi_recv_msg *recv_msg = msg->user_data; |
1da177e4 LT |
3679 | |
3680 | requeue = 0; | |
3681 | if (msg->rsp_size < 2) | |
3682 | /* Message is too small to be correct. */ | |
3683 | goto out; | |
3684 | ||
3685 | chan = msg->data[2] & 0x0f; | |
3686 | if (chan >= IPMI_MAX_CHANNELS) | |
3687 | /* Invalid channel number */ | |
3688 | goto out; | |
3689 | ||
393d2cc3 CM |
3690 | if (!recv_msg) |
3691 | goto out; | |
3692 | ||
3693 | /* Make sure the user still exists. */ | |
3694 | if (!recv_msg->user || !recv_msg->user->valid) | |
3695 | goto out; | |
3696 | ||
3697 | recv_msg->recv_type = IPMI_RESPONSE_RESPONSE_TYPE; | |
3698 | recv_msg->msg.data = recv_msg->msg_data; | |
3699 | recv_msg->msg.data_len = 1; | |
3700 | recv_msg->msg_data[0] = msg->rsp[2]; | |
3701 | deliver_response(recv_msg); | |
1da177e4 | 3702 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
c70d7499 | 3703 | && (msg->rsp[1] == IPMI_GET_MSG_CMD)) { |
1da177e4 LT |
3704 | /* It's from the receive queue. */ |
3705 | chan = msg->rsp[3] & 0xf; | |
3706 | if (chan >= IPMI_MAX_CHANNELS) { | |
3707 | /* Invalid channel number */ | |
3708 | requeue = 0; | |
3709 | goto out; | |
3710 | } | |
3711 | ||
4dec302f | 3712 | /* |
9a2845c4 CM |
3713 | * We need to make sure the channels have been initialized. |
3714 | * The channel_handler routine will set the "curr_channel" | |
3715 | * equal to or greater than IPMI_MAX_CHANNELS when all the | |
3716 | * channels for this interface have been initialized. | |
3717 | */ | |
4dec302f | 3718 | if (intf->curr_channel < IPMI_MAX_CHANNELS) { |
9a2845c4 | 3719 | requeue = 0; /* Throw the message away */ |
4dec302f | 3720 | goto out; |
3721 | } | |
3722 | ||
1da177e4 LT |
3723 | switch (intf->channels[chan].medium) { |
3724 | case IPMI_CHANNEL_MEDIUM_IPMB: | |
3725 | if (msg->rsp[4] & 0x04) { | |
c70d7499 CM |
3726 | /* |
3727 | * It's a response, so find the | |
3728 | * requesting message and send it up. | |
3729 | */ | |
1da177e4 LT |
3730 | requeue = handle_ipmb_get_msg_rsp(intf, msg); |
3731 | } else { | |
c70d7499 CM |
3732 | /* |
3733 | * It's a command to the SMS from some other | |
3734 | * entity. Handle that. | |
3735 | */ | |
1da177e4 LT |
3736 | requeue = handle_ipmb_get_msg_cmd(intf, msg); |
3737 | } | |
3738 | break; | |
3739 | ||
3740 | case IPMI_CHANNEL_MEDIUM_8023LAN: | |
3741 | case IPMI_CHANNEL_MEDIUM_ASYNC: | |
3742 | if (msg->rsp[6] & 0x04) { | |
c70d7499 CM |
3743 | /* |
3744 | * It's a response, so find the | |
3745 | * requesting message and send it up. | |
3746 | */ | |
1da177e4 LT |
3747 | requeue = handle_lan_get_msg_rsp(intf, msg); |
3748 | } else { | |
c70d7499 CM |
3749 | /* |
3750 | * It's a command to the SMS from some other | |
3751 | * entity. Handle that. | |
3752 | */ | |
1da177e4 LT |
3753 | requeue = handle_lan_get_msg_cmd(intf, msg); |
3754 | } | |
3755 | break; | |
3756 | ||
3757 | default: | |
4dec302f | 3758 | /* Check for OEM Channels. Clients had better |
3759 | register for these commands. */ | |
3760 | if ((intf->channels[chan].medium | |
3761 | >= IPMI_CHANNEL_MEDIUM_OEM_MIN) | |
3762 | && (intf->channels[chan].medium | |
3763 | <= IPMI_CHANNEL_MEDIUM_OEM_MAX)) { | |
3764 | requeue = handle_oem_get_msg_cmd(intf, msg); | |
3765 | } else { | |
3766 | /* | |
3767 | * We don't handle the channel type, so just | |
3768 | * free the message. | |
3769 | */ | |
3770 | requeue = 0; | |
3771 | } | |
1da177e4 LT |
3772 | } |
3773 | ||
3774 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
c70d7499 | 3775 | && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD)) { |
1da177e4 LT |
3776 | /* It's an asyncronous event. */ |
3777 | requeue = handle_read_event_rsp(intf, msg); | |
3778 | } else { | |
3779 | /* It's a response from the local BMC. */ | |
3780 | requeue = handle_bmc_rsp(intf, msg); | |
3781 | } | |
3782 | ||
3783 | out: | |
3784 | return requeue; | |
3785 | } | |
3786 | ||
3787 | /* Handle a new message from the lower layer. */ | |
3788 | void ipmi_smi_msg_received(ipmi_smi_t intf, | |
3789 | struct ipmi_smi_msg *msg) | |
3790 | { | |
5956dce1 | 3791 | unsigned long flags = 0; /* keep us warning-free. */ |
1da177e4 | 3792 | int rv; |
5956dce1 | 3793 | int run_to_completion; |
1da177e4 LT |
3794 | |
3795 | ||
1da177e4 LT |
3796 | if ((msg->data_size >= 2) |
3797 | && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) | |
3798 | && (msg->data[1] == IPMI_SEND_MSG_CMD) | |
c70d7499 CM |
3799 | && (msg->user_data == NULL)) { |
3800 | /* | |
3801 | * This is the local response to a command send, start | |
3802 | * the timer for these. The user_data will not be | |
3803 | * NULL if this is a response send, and we will let | |
3804 | * response sends just go through. | |
3805 | */ | |
3806 | ||
3807 | /* | |
3808 | * Check for errors, if we get certain errors (ones | |
3809 | * that mean basically we can try again later), we | |
3810 | * ignore them and start the timer. Otherwise we | |
3811 | * report the error immediately. | |
3812 | */ | |
1da177e4 LT |
3813 | if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) |
3814 | && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) | |
46d52b09 CM |
3815 | && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR) |
3816 | && (msg->rsp[2] != IPMI_BUS_ERR) | |
c70d7499 | 3817 | && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) { |
1da177e4 LT |
3818 | int chan = msg->rsp[3] & 0xf; |
3819 | ||
3820 | /* Got an error sending the message, handle it. */ | |
1da177e4 LT |
3821 | if (chan >= IPMI_MAX_CHANNELS) |
3822 | ; /* This shouldn't happen */ | |
3823 | else if ((intf->channels[chan].medium | |
3824 | == IPMI_CHANNEL_MEDIUM_8023LAN) | |
3825 | || (intf->channels[chan].medium | |
3826 | == IPMI_CHANNEL_MEDIUM_ASYNC)) | |
b2655f26 | 3827 | ipmi_inc_stat(intf, sent_lan_command_errs); |
1da177e4 | 3828 | else |
b2655f26 | 3829 | ipmi_inc_stat(intf, sent_ipmb_command_errs); |
1da177e4 | 3830 | intf_err_seq(intf, msg->msgid, msg->rsp[2]); |
c70d7499 | 3831 | } else |
1da177e4 LT |
3832 | /* The message was sent, start the timer. */ |
3833 | intf_start_seq_timer(intf, msg->msgid); | |
1da177e4 LT |
3834 | |
3835 | ipmi_free_smi_msg(msg); | |
393d2cc3 | 3836 | goto out; |
1da177e4 LT |
3837 | } |
3838 | ||
c70d7499 CM |
3839 | /* |
3840 | * To preserve message order, if the list is not empty, we | |
3841 | * tack this message onto the end of the list. | |
3842 | */ | |
5956dce1 KB |
3843 | run_to_completion = intf->run_to_completion; |
3844 | if (!run_to_completion) | |
3845 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); | |
393d2cc3 CM |
3846 | if (!list_empty(&intf->waiting_msgs)) { |
3847 | list_add_tail(&msg->link, &intf->waiting_msgs); | |
5956dce1 KB |
3848 | if (!run_to_completion) |
3849 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
393d2cc3 | 3850 | goto out; |
1da177e4 | 3851 | } |
5956dce1 KB |
3852 | if (!run_to_completion) |
3853 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
c70d7499 | 3854 | |
1da177e4 LT |
3855 | rv = handle_new_recv_msg(intf, msg); |
3856 | if (rv > 0) { | |
c70d7499 CM |
3857 | /* |
3858 | * Could not handle the message now, just add it to a | |
3859 | * list to handle later. | |
3860 | */ | |
5956dce1 KB |
3861 | run_to_completion = intf->run_to_completion; |
3862 | if (!run_to_completion) | |
3863 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); | |
393d2cc3 | 3864 | list_add_tail(&msg->link, &intf->waiting_msgs); |
5956dce1 KB |
3865 | if (!run_to_completion) |
3866 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
1da177e4 LT |
3867 | } else if (rv == 0) { |
3868 | ipmi_free_smi_msg(msg); | |
3869 | } | |
3870 | ||
393d2cc3 CM |
3871 | out: |
3872 | return; | |
1da177e4 | 3873 | } |
c70d7499 | 3874 | EXPORT_SYMBOL(ipmi_smi_msg_received); |
1da177e4 LT |
3875 | |
3876 | void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf) | |
3877 | { | |
3878 | ipmi_user_t user; | |
3879 | ||
393d2cc3 CM |
3880 | rcu_read_lock(); |
3881 | list_for_each_entry_rcu(user, &intf->users, link) { | |
8a3628d5 | 3882 | if (!user->handler->ipmi_watchdog_pretimeout) |
1da177e4 LT |
3883 | continue; |
3884 | ||
3885 | user->handler->ipmi_watchdog_pretimeout(user->handler_data); | |
3886 | } | |
393d2cc3 | 3887 | rcu_read_unlock(); |
1da177e4 | 3888 | } |
c70d7499 | 3889 | EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); |
1da177e4 | 3890 | |
882fe011 CM |
3891 | static struct ipmi_smi_msg * |
3892 | smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, | |
3893 | unsigned char seq, long seqid) | |
1da177e4 | 3894 | { |
882fe011 | 3895 | struct ipmi_smi_msg *smi_msg = ipmi_alloc_smi_msg(); |
1da177e4 | 3896 | if (!smi_msg) |
c70d7499 CM |
3897 | /* |
3898 | * If we can't allocate the message, then just return, we | |
3899 | * get 4 retries, so this should be ok. | |
3900 | */ | |
882fe011 | 3901 | return NULL; |
1da177e4 LT |
3902 | |
3903 | memcpy(smi_msg->data, recv_msg->msg.data, recv_msg->msg.data_len); | |
3904 | smi_msg->data_size = recv_msg->msg.data_len; | |
3905 | smi_msg->msgid = STORE_SEQ_IN_MSGID(seq, seqid); | |
c70d7499 | 3906 | |
1da177e4 LT |
3907 | #ifdef DEBUG_MSGING |
3908 | { | |
3909 | int m; | |
3910 | printk("Resend: "); | |
e8b33617 | 3911 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
3912 | printk(" %2.2x", smi_msg->data[m]); |
3913 | printk("\n"); | |
3914 | } | |
3915 | #endif | |
882fe011 | 3916 | return smi_msg; |
1da177e4 LT |
3917 | } |
3918 | ||
393d2cc3 CM |
3919 | static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent, |
3920 | struct list_head *timeouts, long timeout_period, | |
3921 | int slot, unsigned long *flags) | |
3922 | { | |
b2c03941 CM |
3923 | struct ipmi_recv_msg *msg; |
3924 | struct ipmi_smi_handlers *handlers; | |
3925 | ||
3926 | if (intf->intf_num == -1) | |
3927 | return; | |
393d2cc3 CM |
3928 | |
3929 | if (!ent->inuse) | |
3930 | return; | |
3931 | ||
3932 | ent->timeout -= timeout_period; | |
3933 | if (ent->timeout > 0) | |
3934 | return; | |
3935 | ||
3936 | if (ent->retries_left == 0) { | |
3937 | /* The message has used all its retries. */ | |
3938 | ent->inuse = 0; | |
3939 | msg = ent->recv_msg; | |
3940 | list_add_tail(&msg->link, timeouts); | |
393d2cc3 | 3941 | if (ent->broadcast) |
b2655f26 | 3942 | ipmi_inc_stat(intf, timed_out_ipmb_broadcasts); |
25176ed6 | 3943 | else if (is_lan_addr(&ent->recv_msg->addr)) |
b2655f26 | 3944 | ipmi_inc_stat(intf, timed_out_lan_commands); |
393d2cc3 | 3945 | else |
b2655f26 | 3946 | ipmi_inc_stat(intf, timed_out_ipmb_commands); |
393d2cc3 CM |
3947 | } else { |
3948 | struct ipmi_smi_msg *smi_msg; | |
3949 | /* More retries, send again. */ | |
3950 | ||
c70d7499 CM |
3951 | /* |
3952 | * Start with the max timer, set to normal timer after | |
3953 | * the message is sent. | |
3954 | */ | |
393d2cc3 CM |
3955 | ent->timeout = MAX_MSG_TIMEOUT; |
3956 | ent->retries_left--; | |
393d2cc3 CM |
3957 | smi_msg = smi_from_recv_msg(intf, ent->recv_msg, slot, |
3958 | ent->seqid); | |
25176ed6 CM |
3959 | if (!smi_msg) { |
3960 | if (is_lan_addr(&ent->recv_msg->addr)) | |
3961 | ipmi_inc_stat(intf, | |
3962 | dropped_rexmit_lan_commands); | |
3963 | else | |
3964 | ipmi_inc_stat(intf, | |
3965 | dropped_rexmit_ipmb_commands); | |
393d2cc3 | 3966 | return; |
25176ed6 | 3967 | } |
393d2cc3 CM |
3968 | |
3969 | spin_unlock_irqrestore(&intf->seq_lock, *flags); | |
b2c03941 | 3970 | |
c70d7499 CM |
3971 | /* |
3972 | * Send the new message. We send with a zero | |
3973 | * priority. It timed out, I doubt time is that | |
3974 | * critical now, and high priority messages are really | |
3975 | * only for messages to the local MC, which don't get | |
3976 | * resent. | |
3977 | */ | |
b2c03941 | 3978 | handlers = intf->handlers; |
25176ed6 CM |
3979 | if (handlers) { |
3980 | if (is_lan_addr(&ent->recv_msg->addr)) | |
3981 | ipmi_inc_stat(intf, | |
3982 | retransmitted_lan_commands); | |
3983 | else | |
3984 | ipmi_inc_stat(intf, | |
3985 | retransmitted_ipmb_commands); | |
3986 | ||
b2c03941 CM |
3987 | intf->handlers->sender(intf->send_info, |
3988 | smi_msg, 0); | |
25176ed6 | 3989 | } else |
b2c03941 CM |
3990 | ipmi_free_smi_msg(smi_msg); |
3991 | ||
393d2cc3 CM |
3992 | spin_lock_irqsave(&intf->seq_lock, *flags); |
3993 | } | |
3994 | } | |
3995 | ||
3996 | static void ipmi_timeout_handler(long timeout_period) | |
1da177e4 LT |
3997 | { |
3998 | ipmi_smi_t intf; | |
3999 | struct list_head timeouts; | |
4000 | struct ipmi_recv_msg *msg, *msg2; | |
4001 | struct ipmi_smi_msg *smi_msg, *smi_msg2; | |
4002 | unsigned long flags; | |
bca0324d | 4003 | int i; |
1da177e4 | 4004 | |
bca0324d CM |
4005 | rcu_read_lock(); |
4006 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
1da177e4 | 4007 | /* See if any waiting messages need to be processed. */ |
393d2cc3 | 4008 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
8a3628d5 CM |
4009 | list_for_each_entry_safe(smi_msg, smi_msg2, |
4010 | &intf->waiting_msgs, link) { | |
4011 | if (!handle_new_recv_msg(intf, smi_msg)) { | |
1da177e4 LT |
4012 | list_del(&smi_msg->link); |
4013 | ipmi_free_smi_msg(smi_msg); | |
4014 | } else { | |
c70d7499 CM |
4015 | /* |
4016 | * To preserve message order, quit if we | |
4017 | * can't handle a message. | |
4018 | */ | |
1da177e4 LT |
4019 | break; |
4020 | } | |
4021 | } | |
393d2cc3 | 4022 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
1da177e4 | 4023 | |
c70d7499 CM |
4024 | /* |
4025 | * Go through the seq table and find any messages that | |
4026 | * have timed out, putting them in the timeouts | |
4027 | * list. | |
4028 | */ | |
41c57a87 | 4029 | INIT_LIST_HEAD(&timeouts); |
393d2cc3 | 4030 | spin_lock_irqsave(&intf->seq_lock, flags); |
bca0324d CM |
4031 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) |
4032 | check_msg_timeout(intf, &(intf->seq_table[i]), | |
4033 | &timeouts, timeout_period, i, | |
393d2cc3 CM |
4034 | &flags); |
4035 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
4036 | ||
4037 | list_for_each_entry_safe(msg, msg2, &timeouts, link) | |
b2c03941 | 4038 | deliver_err_response(msg, IPMI_TIMEOUT_COMPLETION_CODE); |
b9675136 CM |
4039 | |
4040 | /* | |
4041 | * Maintenance mode handling. Check the timeout | |
4042 | * optimistically before we claim the lock. It may | |
4043 | * mean a timeout gets missed occasionally, but that | |
4044 | * only means the timeout gets extended by one period | |
4045 | * in that case. No big deal, and it avoids the lock | |
4046 | * most of the time. | |
4047 | */ | |
4048 | if (intf->auto_maintenance_timeout > 0) { | |
4049 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); | |
4050 | if (intf->auto_maintenance_timeout > 0) { | |
4051 | intf->auto_maintenance_timeout | |
4052 | -= timeout_period; | |
4053 | if (!intf->maintenance_mode | |
c70d7499 | 4054 | && (intf->auto_maintenance_timeout <= 0)) { |
b9675136 CM |
4055 | intf->maintenance_mode_enable = 0; |
4056 | maintenance_mode_update(intf); | |
4057 | } | |
4058 | } | |
4059 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, | |
4060 | flags); | |
4061 | } | |
1da177e4 | 4062 | } |
bca0324d | 4063 | rcu_read_unlock(); |
1da177e4 LT |
4064 | } |
4065 | ||
4066 | static void ipmi_request_event(void) | |
4067 | { | |
b2c03941 CM |
4068 | ipmi_smi_t intf; |
4069 | struct ipmi_smi_handlers *handlers; | |
1da177e4 | 4070 | |
bca0324d | 4071 | rcu_read_lock(); |
c70d7499 CM |
4072 | /* |
4073 | * Called from the timer, no need to check if handlers is | |
4074 | * valid. | |
4075 | */ | |
b2c03941 | 4076 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b9675136 CM |
4077 | /* No event requests when in maintenance mode. */ |
4078 | if (intf->maintenance_mode_enable) | |
4079 | continue; | |
4080 | ||
b2c03941 CM |
4081 | handlers = intf->handlers; |
4082 | if (handlers) | |
4083 | handlers->request_events(intf->send_info); | |
4084 | } | |
bca0324d | 4085 | rcu_read_unlock(); |
1da177e4 LT |
4086 | } |
4087 | ||
4088 | static struct timer_list ipmi_timer; | |
4089 | ||
ddac44b7 CM |
4090 | /* Call every ~1000 ms. */ |
4091 | #define IPMI_TIMEOUT_TIME 1000 | |
1da177e4 LT |
4092 | |
4093 | /* How many jiffies does it take to get to the timeout time. */ | |
4094 | #define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000) | |
4095 | ||
c70d7499 CM |
4096 | /* |
4097 | * Request events from the queue every second (this is the number of | |
4098 | * IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the | |
4099 | * future, IPMI will add a way to know immediately if an event is in | |
4100 | * the queue and this silliness can go away. | |
4101 | */ | |
1da177e4 LT |
4102 | #define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME)) |
4103 | ||
8f43f84f | 4104 | static atomic_t stop_operation; |
1da177e4 LT |
4105 | static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
4106 | ||
4107 | static void ipmi_timeout(unsigned long data) | |
4108 | { | |
8f43f84f | 4109 | if (atomic_read(&stop_operation)) |
1da177e4 | 4110 | return; |
1da177e4 LT |
4111 | |
4112 | ticks_to_req_ev--; | |
4113 | if (ticks_to_req_ev == 0) { | |
4114 | ipmi_request_event(); | |
4115 | ticks_to_req_ev = IPMI_REQUEST_EV_TIME; | |
4116 | } | |
4117 | ||
4118 | ipmi_timeout_handler(IPMI_TIMEOUT_TIME); | |
4119 | ||
8f43f84f | 4120 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); |
1da177e4 LT |
4121 | } |
4122 | ||
4123 | ||
4124 | static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0); | |
4125 | static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0); | |
4126 | ||
4127 | /* FIXME - convert these to slabs. */ | |
4128 | static void free_smi_msg(struct ipmi_smi_msg *msg) | |
4129 | { | |
4130 | atomic_dec(&smi_msg_inuse_count); | |
4131 | kfree(msg); | |
4132 | } | |
4133 | ||
4134 | struct ipmi_smi_msg *ipmi_alloc_smi_msg(void) | |
4135 | { | |
4136 | struct ipmi_smi_msg *rv; | |
4137 | rv = kmalloc(sizeof(struct ipmi_smi_msg), GFP_ATOMIC); | |
4138 | if (rv) { | |
4139 | rv->done = free_smi_msg; | |
4140 | rv->user_data = NULL; | |
4141 | atomic_inc(&smi_msg_inuse_count); | |
4142 | } | |
4143 | return rv; | |
4144 | } | |
c70d7499 | 4145 | EXPORT_SYMBOL(ipmi_alloc_smi_msg); |
1da177e4 LT |
4146 | |
4147 | static void free_recv_msg(struct ipmi_recv_msg *msg) | |
4148 | { | |
4149 | atomic_dec(&recv_msg_inuse_count); | |
4150 | kfree(msg); | |
4151 | } | |
4152 | ||
74006309 | 4153 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void) |
1da177e4 LT |
4154 | { |
4155 | struct ipmi_recv_msg *rv; | |
4156 | ||
4157 | rv = kmalloc(sizeof(struct ipmi_recv_msg), GFP_ATOMIC); | |
4158 | if (rv) { | |
a9eec556 | 4159 | rv->user = NULL; |
1da177e4 LT |
4160 | rv->done = free_recv_msg; |
4161 | atomic_inc(&recv_msg_inuse_count); | |
4162 | } | |
4163 | return rv; | |
4164 | } | |
4165 | ||
393d2cc3 CM |
4166 | void ipmi_free_recv_msg(struct ipmi_recv_msg *msg) |
4167 | { | |
4168 | if (msg->user) | |
4169 | kref_put(&msg->user->refcount, free_user); | |
4170 | msg->done(msg); | |
4171 | } | |
c70d7499 | 4172 | EXPORT_SYMBOL(ipmi_free_recv_msg); |
393d2cc3 | 4173 | |
1da177e4 LT |
4174 | #ifdef CONFIG_IPMI_PANIC_EVENT |
4175 | ||
4176 | static void dummy_smi_done_handler(struct ipmi_smi_msg *msg) | |
4177 | { | |
4178 | } | |
4179 | ||
4180 | static void dummy_recv_done_handler(struct ipmi_recv_msg *msg) | |
4181 | { | |
4182 | } | |
4183 | ||
4184 | #ifdef CONFIG_IPMI_PANIC_STRING | |
56a55ec6 | 4185 | static void event_receiver_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 4186 | { |
56a55ec6 CM |
4187 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
4188 | && (msg->msg.netfn == IPMI_NETFN_SENSOR_EVENT_RESPONSE) | |
4189 | && (msg->msg.cmd == IPMI_GET_EVENT_RECEIVER_CMD) | |
c70d7499 | 4190 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { |
1da177e4 | 4191 | /* A get event receiver command, save it. */ |
56a55ec6 CM |
4192 | intf->event_receiver = msg->msg.data[1]; |
4193 | intf->event_receiver_lun = msg->msg.data[2] & 0x3; | |
1da177e4 LT |
4194 | } |
4195 | } | |
4196 | ||
56a55ec6 | 4197 | static void device_id_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 4198 | { |
56a55ec6 CM |
4199 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
4200 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
4201 | && (msg->msg.cmd == IPMI_GET_DEVICE_ID_CMD) | |
c70d7499 CM |
4202 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { |
4203 | /* | |
4204 | * A get device id command, save if we are an event | |
4205 | * receiver or generator. | |
4206 | */ | |
56a55ec6 CM |
4207 | intf->local_sel_device = (msg->msg.data[6] >> 2) & 1; |
4208 | intf->local_event_generator = (msg->msg.data[6] >> 5) & 1; | |
1da177e4 LT |
4209 | } |
4210 | } | |
4211 | #endif | |
4212 | ||
4213 | static void send_panic_events(char *str) | |
4214 | { | |
4215 | struct kernel_ipmi_msg msg; | |
4216 | ipmi_smi_t intf; | |
4217 | unsigned char data[16]; | |
1da177e4 LT |
4218 | struct ipmi_system_interface_addr *si; |
4219 | struct ipmi_addr addr; | |
4220 | struct ipmi_smi_msg smi_msg; | |
4221 | struct ipmi_recv_msg recv_msg; | |
4222 | ||
4223 | si = (struct ipmi_system_interface_addr *) &addr; | |
4224 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
4225 | si->channel = IPMI_BMC_CHANNEL; | |
4226 | si->lun = 0; | |
4227 | ||
4228 | /* Fill in an event telling that we have failed. */ | |
4229 | msg.netfn = 0x04; /* Sensor or Event. */ | |
4230 | msg.cmd = 2; /* Platform event command. */ | |
4231 | msg.data = data; | |
4232 | msg.data_len = 8; | |
cda315ab | 4233 | data[0] = 0x41; /* Kernel generator ID, IPMI table 5-4 */ |
1da177e4 LT |
4234 | data[1] = 0x03; /* This is for IPMI 1.0. */ |
4235 | data[2] = 0x20; /* OS Critical Stop, IPMI table 36-3 */ | |
4236 | data[4] = 0x6f; /* Sensor specific, IPMI table 36-1 */ | |
4237 | data[5] = 0xa1; /* Runtime stop OEM bytes 2 & 3. */ | |
4238 | ||
c70d7499 CM |
4239 | /* |
4240 | * Put a few breadcrumbs in. Hopefully later we can add more things | |
4241 | * to make the panic events more useful. | |
4242 | */ | |
1da177e4 LT |
4243 | if (str) { |
4244 | data[3] = str[0]; | |
4245 | data[6] = str[1]; | |
4246 | data[7] = str[2]; | |
4247 | } | |
4248 | ||
4249 | smi_msg.done = dummy_smi_done_handler; | |
4250 | recv_msg.done = dummy_recv_done_handler; | |
4251 | ||
4252 | /* For every registered interface, send the event. */ | |
bca0324d | 4253 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b2c03941 CM |
4254 | if (!intf->handlers) |
4255 | /* Interface is not ready. */ | |
1da177e4 LT |
4256 | continue; |
4257 | ||
5956dce1 | 4258 | intf->run_to_completion = 1; |
1da177e4 LT |
4259 | /* Send the event announcing the panic. */ |
4260 | intf->handlers->set_run_to_completion(intf->send_info, 1); | |
4261 | i_ipmi_request(NULL, | |
4262 | intf, | |
4263 | &addr, | |
4264 | 0, | |
4265 | &msg, | |
56a55ec6 | 4266 | intf, |
1da177e4 LT |
4267 | &smi_msg, |
4268 | &recv_msg, | |
4269 | 0, | |
c14979b9 CM |
4270 | intf->channels[0].address, |
4271 | intf->channels[0].lun, | |
1da177e4 LT |
4272 | 0, 1); /* Don't retry, and don't wait. */ |
4273 | } | |
4274 | ||
4275 | #ifdef CONFIG_IPMI_PANIC_STRING | |
c70d7499 CM |
4276 | /* |
4277 | * On every interface, dump a bunch of OEM event holding the | |
4278 | * string. | |
4279 | */ | |
4280 | if (!str) | |
1da177e4 LT |
4281 | return; |
4282 | ||
bca0324d CM |
4283 | /* For every registered interface, send the event. */ |
4284 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
1da177e4 LT |
4285 | char *p = str; |
4286 | struct ipmi_ipmb_addr *ipmb; | |
4287 | int j; | |
4288 | ||
bca0324d CM |
4289 | if (intf->intf_num == -1) |
4290 | /* Interface was not ready yet. */ | |
1da177e4 LT |
4291 | continue; |
4292 | ||
78ba2faf CM |
4293 | /* |
4294 | * intf_num is used as an marker to tell if the | |
4295 | * interface is valid. Thus we need a read barrier to | |
4296 | * make sure data fetched before checking intf_num | |
4297 | * won't be used. | |
4298 | */ | |
4299 | smp_rmb(); | |
4300 | ||
c70d7499 CM |
4301 | /* |
4302 | * First job here is to figure out where to send the | |
4303 | * OEM events. There's no way in IPMI to send OEM | |
4304 | * events using an event send command, so we have to | |
4305 | * find the SEL to put them in and stick them in | |
4306 | * there. | |
4307 | */ | |
1da177e4 LT |
4308 | |
4309 | /* Get capabilities from the get device id. */ | |
4310 | intf->local_sel_device = 0; | |
4311 | intf->local_event_generator = 0; | |
4312 | intf->event_receiver = 0; | |
4313 | ||
4314 | /* Request the device info from the local MC. */ | |
4315 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
4316 | msg.cmd = IPMI_GET_DEVICE_ID_CMD; | |
4317 | msg.data = NULL; | |
4318 | msg.data_len = 0; | |
4319 | intf->null_user_handler = device_id_fetcher; | |
4320 | i_ipmi_request(NULL, | |
4321 | intf, | |
4322 | &addr, | |
4323 | 0, | |
4324 | &msg, | |
56a55ec6 | 4325 | intf, |
1da177e4 LT |
4326 | &smi_msg, |
4327 | &recv_msg, | |
4328 | 0, | |
c14979b9 CM |
4329 | intf->channels[0].address, |
4330 | intf->channels[0].lun, | |
1da177e4 LT |
4331 | 0, 1); /* Don't retry, and don't wait. */ |
4332 | ||
4333 | if (intf->local_event_generator) { | |
4334 | /* Request the event receiver from the local MC. */ | |
4335 | msg.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; | |
4336 | msg.cmd = IPMI_GET_EVENT_RECEIVER_CMD; | |
4337 | msg.data = NULL; | |
4338 | msg.data_len = 0; | |
4339 | intf->null_user_handler = event_receiver_fetcher; | |
4340 | i_ipmi_request(NULL, | |
4341 | intf, | |
4342 | &addr, | |
4343 | 0, | |
4344 | &msg, | |
56a55ec6 | 4345 | intf, |
1da177e4 LT |
4346 | &smi_msg, |
4347 | &recv_msg, | |
4348 | 0, | |
c14979b9 CM |
4349 | intf->channels[0].address, |
4350 | intf->channels[0].lun, | |
1da177e4 LT |
4351 | 0, 1); /* no retry, and no wait. */ |
4352 | } | |
4353 | intf->null_user_handler = NULL; | |
4354 | ||
c70d7499 CM |
4355 | /* |
4356 | * Validate the event receiver. The low bit must not | |
4357 | * be 1 (it must be a valid IPMB address), it cannot | |
4358 | * be zero, and it must not be my address. | |
4359 | */ | |
4360 | if (((intf->event_receiver & 1) == 0) | |
1da177e4 | 4361 | && (intf->event_receiver != 0) |
c70d7499 CM |
4362 | && (intf->event_receiver != intf->channels[0].address)) { |
4363 | /* | |
4364 | * The event receiver is valid, send an IPMB | |
4365 | * message. | |
4366 | */ | |
1da177e4 LT |
4367 | ipmb = (struct ipmi_ipmb_addr *) &addr; |
4368 | ipmb->addr_type = IPMI_IPMB_ADDR_TYPE; | |
4369 | ipmb->channel = 0; /* FIXME - is this right? */ | |
4370 | ipmb->lun = intf->event_receiver_lun; | |
4371 | ipmb->slave_addr = intf->event_receiver; | |
4372 | } else if (intf->local_sel_device) { | |
c70d7499 CM |
4373 | /* |
4374 | * The event receiver was not valid (or was | |
4375 | * me), but I am an SEL device, just dump it | |
4376 | * in my SEL. | |
4377 | */ | |
1da177e4 LT |
4378 | si = (struct ipmi_system_interface_addr *) &addr; |
4379 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
4380 | si->channel = IPMI_BMC_CHANNEL; | |
4381 | si->lun = 0; | |
4382 | } else | |
4383 | continue; /* No where to send the event. */ | |
4384 | ||
1da177e4 LT |
4385 | msg.netfn = IPMI_NETFN_STORAGE_REQUEST; /* Storage. */ |
4386 | msg.cmd = IPMI_ADD_SEL_ENTRY_CMD; | |
4387 | msg.data = data; | |
4388 | msg.data_len = 16; | |
4389 | ||
4390 | j = 0; | |
4391 | while (*p) { | |
4392 | int size = strlen(p); | |
4393 | ||
4394 | if (size > 11) | |
4395 | size = 11; | |
4396 | data[0] = 0; | |
4397 | data[1] = 0; | |
4398 | data[2] = 0xf0; /* OEM event without timestamp. */ | |
c14979b9 | 4399 | data[3] = intf->channels[0].address; |
1da177e4 | 4400 | data[4] = j++; /* sequence # */ |
c70d7499 CM |
4401 | /* |
4402 | * Always give 11 bytes, so strncpy will fill | |
4403 | * it with zeroes for me. | |
4404 | */ | |
1da177e4 LT |
4405 | strncpy(data+5, p, 11); |
4406 | p += size; | |
4407 | ||
4408 | i_ipmi_request(NULL, | |
4409 | intf, | |
4410 | &addr, | |
4411 | 0, | |
4412 | &msg, | |
56a55ec6 | 4413 | intf, |
1da177e4 LT |
4414 | &smi_msg, |
4415 | &recv_msg, | |
4416 | 0, | |
c14979b9 CM |
4417 | intf->channels[0].address, |
4418 | intf->channels[0].lun, | |
1da177e4 LT |
4419 | 0, 1); /* no retry, and no wait. */ |
4420 | } | |
c70d7499 | 4421 | } |
1da177e4 LT |
4422 | #endif /* CONFIG_IPMI_PANIC_STRING */ |
4423 | } | |
4424 | #endif /* CONFIG_IPMI_PANIC_EVENT */ | |
4425 | ||
0c8204b3 | 4426 | static int has_panicked; |
1da177e4 LT |
4427 | |
4428 | static int panic_event(struct notifier_block *this, | |
4429 | unsigned long event, | |
c70d7499 | 4430 | void *ptr) |
1da177e4 | 4431 | { |
1da177e4 LT |
4432 | ipmi_smi_t intf; |
4433 | ||
f18190bd | 4434 | if (has_panicked) |
1da177e4 | 4435 | return NOTIFY_DONE; |
f18190bd | 4436 | has_panicked = 1; |
1da177e4 LT |
4437 | |
4438 | /* For every registered interface, set it to run to completion. */ | |
bca0324d | 4439 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b2c03941 CM |
4440 | if (!intf->handlers) |
4441 | /* Interface is not ready. */ | |
1da177e4 LT |
4442 | continue; |
4443 | ||
5956dce1 | 4444 | intf->run_to_completion = 1; |
1da177e4 LT |
4445 | intf->handlers->set_run_to_completion(intf->send_info, 1); |
4446 | } | |
4447 | ||
4448 | #ifdef CONFIG_IPMI_PANIC_EVENT | |
4449 | send_panic_events(ptr); | |
4450 | #endif | |
4451 | ||
4452 | return NOTIFY_DONE; | |
4453 | } | |
4454 | ||
4455 | static struct notifier_block panic_block = { | |
4456 | .notifier_call = panic_event, | |
4457 | .next = NULL, | |
4458 | .priority = 200 /* priority: INT_MAX >= x >= 0 */ | |
4459 | }; | |
4460 | ||
4461 | static int ipmi_init_msghandler(void) | |
4462 | { | |
50c812b2 | 4463 | int rv; |
1da177e4 LT |
4464 | |
4465 | if (initialized) | |
4466 | return 0; | |
4467 | ||
fe2d5ffc | 4468 | rv = driver_register(&ipmidriver.driver); |
50c812b2 CM |
4469 | if (rv) { |
4470 | printk(KERN_ERR PFX "Could not register IPMI driver\n"); | |
4471 | return rv; | |
4472 | } | |
4473 | ||
1da177e4 | 4474 | printk(KERN_INFO "ipmi message handler version " |
1fdd75bd | 4475 | IPMI_DRIVER_VERSION "\n"); |
1da177e4 | 4476 | |
3b625943 | 4477 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
4478 | proc_ipmi_root = proc_mkdir("ipmi", NULL); |
4479 | if (!proc_ipmi_root) { | |
4480 | printk(KERN_ERR PFX "Unable to create IPMI proc dir"); | |
4481 | return -ENOMEM; | |
4482 | } | |
4483 | ||
3b625943 | 4484 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 4485 | |
409035e0 CM |
4486 | setup_timer(&ipmi_timer, ipmi_timeout, 0); |
4487 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); | |
1da177e4 | 4488 | |
e041c683 | 4489 | atomic_notifier_chain_register(&panic_notifier_list, &panic_block); |
1da177e4 LT |
4490 | |
4491 | initialized = 1; | |
4492 | ||
4493 | return 0; | |
4494 | } | |
4495 | ||
60ee6d5f | 4496 | static int __init ipmi_init_msghandler_mod(void) |
1da177e4 LT |
4497 | { |
4498 | ipmi_init_msghandler(); | |
4499 | return 0; | |
4500 | } | |
4501 | ||
60ee6d5f | 4502 | static void __exit cleanup_ipmi(void) |
1da177e4 LT |
4503 | { |
4504 | int count; | |
4505 | ||
4506 | if (!initialized) | |
4507 | return; | |
4508 | ||
e041c683 | 4509 | atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block); |
1da177e4 | 4510 | |
c70d7499 CM |
4511 | /* |
4512 | * This can't be called if any interfaces exist, so no worry | |
4513 | * about shutting down the interfaces. | |
4514 | */ | |
1da177e4 | 4515 | |
c70d7499 CM |
4516 | /* |
4517 | * Tell the timer to stop, then wait for it to stop. This | |
4518 | * avoids problems with race conditions removing the timer | |
4519 | * here. | |
4520 | */ | |
8f43f84f CM |
4521 | atomic_inc(&stop_operation); |
4522 | del_timer_sync(&ipmi_timer); | |
1da177e4 | 4523 | |
3b625943 | 4524 | #ifdef CONFIG_PROC_FS |
3542ae4c | 4525 | remove_proc_entry(proc_ipmi_root->name, NULL); |
3b625943 | 4526 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 4527 | |
fe2d5ffc | 4528 | driver_unregister(&ipmidriver.driver); |
50c812b2 | 4529 | |
1da177e4 LT |
4530 | initialized = 0; |
4531 | ||
4532 | /* Check for buffer leaks. */ | |
4533 | count = atomic_read(&smi_msg_inuse_count); | |
4534 | if (count != 0) | |
4535 | printk(KERN_WARNING PFX "SMI message count %d at exit\n", | |
4536 | count); | |
4537 | count = atomic_read(&recv_msg_inuse_count); | |
4538 | if (count != 0) | |
4539 | printk(KERN_WARNING PFX "recv message count %d at exit\n", | |
4540 | count); | |
4541 | } | |
4542 | module_exit(cleanup_ipmi); | |
4543 | ||
4544 | module_init(ipmi_init_msghandler_mod); | |
4545 | MODULE_LICENSE("GPL"); | |
1fdd75bd | 4546 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
c70d7499 CM |
4547 | MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI" |
4548 | " interface."); | |
1fdd75bd | 4549 | MODULE_VERSION(IPMI_DRIVER_VERSION); |