Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * ipmi_msghandler.c | |
3 | * | |
4 | * Incoming and outgoing message routing for an IPMI interface. | |
5 | * | |
6 | * Author: MontaVista Software, Inc. | |
7 | * Corey Minyard <minyard@mvista.com> | |
8 | * source@mvista.com | |
9 | * | |
10 | * Copyright 2002 MontaVista Software Inc. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | * | |
18 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
19 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
20 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
23 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS | |
24 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
26 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
27 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
28 | * | |
29 | * You should have received a copy of the GNU General Public License along | |
30 | * with this program; if not, write to the Free Software Foundation, Inc., | |
31 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
32 | */ | |
33 | ||
1da177e4 LT |
34 | #include <linux/module.h> |
35 | #include <linux/errno.h> | |
1da177e4 | 36 | #include <linux/poll.h> |
a99bbaf5 | 37 | #include <linux/sched.h> |
07412736 | 38 | #include <linux/seq_file.h> |
1da177e4 | 39 | #include <linux/spinlock.h> |
d6dfd131 | 40 | #include <linux/mutex.h> |
1da177e4 LT |
41 | #include <linux/slab.h> |
42 | #include <linux/ipmi.h> | |
43 | #include <linux/ipmi_smi.h> | |
44 | #include <linux/notifier.h> | |
45 | #include <linux/init.h> | |
46 | #include <linux/proc_fs.h> | |
393d2cc3 | 47 | #include <linux/rcupdate.h> |
7adf579c | 48 | #include <linux/interrupt.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); | |
7adf579c CM |
56 | static void smi_recv_tasklet(unsigned long); |
57 | static void handle_new_recv_msgs(ipmi_smi_t intf); | |
1da177e4 | 58 | |
0c8204b3 | 59 | static int initialized; |
1da177e4 | 60 | |
3b625943 | 61 | #ifdef CONFIG_PROC_FS |
0c8204b3 | 62 | static struct proc_dir_entry *proc_ipmi_root; |
3b625943 | 63 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 64 | |
b9675136 CM |
65 | /* Remain in auto-maintenance mode for this amount of time (in ms). */ |
66 | #define IPMI_MAINTENANCE_MODE_TIMEOUT 30000 | |
67 | ||
1da177e4 LT |
68 | #define MAX_EVENTS_IN_QUEUE 25 |
69 | ||
c70d7499 CM |
70 | /* |
71 | * Don't let a message sit in a queue forever, always time it with at lest | |
72 | * the max message timer. This is in milliseconds. | |
73 | */ | |
1da177e4 LT |
74 | #define MAX_MSG_TIMEOUT 60000 |
75 | ||
393d2cc3 CM |
76 | /* |
77 | * The main "user" data structure. | |
78 | */ | |
c70d7499 | 79 | struct ipmi_user { |
1da177e4 LT |
80 | struct list_head link; |
81 | ||
393d2cc3 CM |
82 | /* Set to "0" when the user is destroyed. */ |
83 | int valid; | |
84 | ||
85 | struct kref refcount; | |
86 | ||
1da177e4 LT |
87 | /* The upper layer that handles receive messages. */ |
88 | struct ipmi_user_hndl *handler; | |
89 | void *handler_data; | |
90 | ||
91 | /* The interface this user is bound to. */ | |
92 | ipmi_smi_t intf; | |
93 | ||
94 | /* Does this interface receive IPMI events? */ | |
95 | int gets_events; | |
96 | }; | |
97 | ||
c70d7499 | 98 | struct cmd_rcvr { |
1da177e4 LT |
99 | struct list_head link; |
100 | ||
101 | ipmi_user_t user; | |
102 | unsigned char netfn; | |
103 | unsigned char cmd; | |
c69c3127 | 104 | unsigned int chans; |
393d2cc3 CM |
105 | |
106 | /* | |
107 | * This is used to form a linked lised during mass deletion. | |
108 | * Since this is in an RCU list, we cannot use the link above | |
109 | * or change any data until the RCU period completes. So we | |
110 | * use this next variable during mass deletion so we can have | |
111 | * a list and don't have to wait and restart the search on | |
c70d7499 CM |
112 | * every individual deletion of a command. |
113 | */ | |
393d2cc3 | 114 | struct cmd_rcvr *next; |
1da177e4 LT |
115 | }; |
116 | ||
c70d7499 | 117 | struct seq_table { |
1da177e4 LT |
118 | unsigned int inuse : 1; |
119 | unsigned int broadcast : 1; | |
120 | ||
121 | unsigned long timeout; | |
122 | unsigned long orig_timeout; | |
123 | unsigned int retries_left; | |
124 | ||
c70d7499 CM |
125 | /* |
126 | * To verify on an incoming send message response that this is | |
127 | * the message that the response is for, we keep a sequence id | |
128 | * and increment it every time we send a message. | |
129 | */ | |
1da177e4 LT |
130 | long seqid; |
131 | ||
c70d7499 CM |
132 | /* |
133 | * This is held so we can properly respond to the message on a | |
134 | * timeout, and it is used to hold the temporary data for | |
135 | * retransmission, too. | |
136 | */ | |
1da177e4 LT |
137 | struct ipmi_recv_msg *recv_msg; |
138 | }; | |
139 | ||
c70d7499 CM |
140 | /* |
141 | * Store the information in a msgid (long) to allow us to find a | |
142 | * sequence table entry from the msgid. | |
143 | */ | |
1da177e4 LT |
144 | #define STORE_SEQ_IN_MSGID(seq, seqid) (((seq&0xff)<<26) | (seqid&0x3ffffff)) |
145 | ||
146 | #define GET_SEQ_FROM_MSGID(msgid, seq, seqid) \ | |
147 | do { \ | |
148 | seq = ((msgid >> 26) & 0x3f); \ | |
149 | seqid = (msgid & 0x3fffff); \ | |
c70d7499 | 150 | } while (0) |
1da177e4 LT |
151 | |
152 | #define NEXT_SEQID(seqid) (((seqid) + 1) & 0x3fffff) | |
153 | ||
c70d7499 | 154 | struct ipmi_channel { |
1da177e4 LT |
155 | unsigned char medium; |
156 | unsigned char protocol; | |
c14979b9 | 157 | |
c70d7499 CM |
158 | /* |
159 | * My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, | |
160 | * but may be changed by the user. | |
161 | */ | |
c14979b9 CM |
162 | unsigned char address; |
163 | ||
c70d7499 CM |
164 | /* |
165 | * My LUN. This should generally stay the SMS LUN, but just in | |
166 | * case... | |
167 | */ | |
c14979b9 | 168 | unsigned char lun; |
1da177e4 LT |
169 | }; |
170 | ||
3b625943 | 171 | #ifdef CONFIG_PROC_FS |
c70d7499 | 172 | struct ipmi_proc_entry { |
1da177e4 LT |
173 | char *name; |
174 | struct ipmi_proc_entry *next; | |
175 | }; | |
3b625943 | 176 | #endif |
1da177e4 | 177 | |
c70d7499 | 178 | struct bmc_device { |
50c812b2 CM |
179 | struct platform_device *dev; |
180 | struct ipmi_device_id id; | |
181 | unsigned char guid[16]; | |
182 | int guid_set; | |
183 | ||
184 | struct kref refcount; | |
185 | ||
186 | /* bmc device attributes */ | |
187 | struct device_attribute device_id_attr; | |
188 | struct device_attribute provides_dev_sdrs_attr; | |
189 | struct device_attribute revision_attr; | |
190 | struct device_attribute firmware_rev_attr; | |
191 | struct device_attribute version_attr; | |
192 | struct device_attribute add_dev_support_attr; | |
193 | struct device_attribute manufacturer_id_attr; | |
194 | struct device_attribute product_id_attr; | |
195 | struct device_attribute guid_attr; | |
196 | struct device_attribute aux_firmware_rev_attr; | |
197 | }; | |
198 | ||
b2655f26 KB |
199 | /* |
200 | * Various statistics for IPMI, these index stats[] in the ipmi_smi | |
201 | * structure. | |
202 | */ | |
73f2bdb9 CM |
203 | enum ipmi_stat_indexes { |
204 | /* Commands we got from the user that were invalid. */ | |
205 | IPMI_STAT_sent_invalid_commands = 0, | |
b2655f26 | 206 | |
73f2bdb9 CM |
207 | /* Commands we sent to the MC. */ |
208 | IPMI_STAT_sent_local_commands, | |
b2655f26 | 209 | |
73f2bdb9 CM |
210 | /* Responses from the MC that were delivered to a user. */ |
211 | IPMI_STAT_handled_local_responses, | |
b2655f26 | 212 | |
73f2bdb9 CM |
213 | /* Responses from the MC that were not delivered to a user. */ |
214 | IPMI_STAT_unhandled_local_responses, | |
b2655f26 | 215 | |
73f2bdb9 CM |
216 | /* Commands we sent out to the IPMB bus. */ |
217 | IPMI_STAT_sent_ipmb_commands, | |
b2655f26 | 218 | |
73f2bdb9 CM |
219 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
220 | IPMI_STAT_sent_ipmb_command_errs, | |
b2655f26 | 221 | |
73f2bdb9 CM |
222 | /* Each retransmit increments this count. */ |
223 | IPMI_STAT_retransmitted_ipmb_commands, | |
b2655f26 | 224 | |
73f2bdb9 CM |
225 | /* |
226 | * When a message times out (runs out of retransmits) this is | |
227 | * incremented. | |
228 | */ | |
229 | IPMI_STAT_timed_out_ipmb_commands, | |
b2655f26 | 230 | |
73f2bdb9 CM |
231 | /* |
232 | * This is like above, but for broadcasts. Broadcasts are | |
233 | * *not* included in the above count (they are expected to | |
234 | * time out). | |
235 | */ | |
236 | IPMI_STAT_timed_out_ipmb_broadcasts, | |
b2655f26 | 237 | |
73f2bdb9 CM |
238 | /* Responses I have sent to the IPMB bus. */ |
239 | IPMI_STAT_sent_ipmb_responses, | |
b2655f26 | 240 | |
73f2bdb9 CM |
241 | /* The response was delivered to the user. */ |
242 | IPMI_STAT_handled_ipmb_responses, | |
b2655f26 | 243 | |
73f2bdb9 CM |
244 | /* The response had invalid data in it. */ |
245 | IPMI_STAT_invalid_ipmb_responses, | |
b2655f26 | 246 | |
73f2bdb9 CM |
247 | /* The response didn't have anyone waiting for it. */ |
248 | IPMI_STAT_unhandled_ipmb_responses, | |
b2655f26 | 249 | |
73f2bdb9 CM |
250 | /* Commands we sent out to the IPMB bus. */ |
251 | IPMI_STAT_sent_lan_commands, | |
b2655f26 | 252 | |
73f2bdb9 CM |
253 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
254 | IPMI_STAT_sent_lan_command_errs, | |
b2655f26 | 255 | |
73f2bdb9 CM |
256 | /* Each retransmit increments this count. */ |
257 | IPMI_STAT_retransmitted_lan_commands, | |
b2655f26 | 258 | |
73f2bdb9 CM |
259 | /* |
260 | * When a message times out (runs out of retransmits) this is | |
261 | * incremented. | |
262 | */ | |
263 | IPMI_STAT_timed_out_lan_commands, | |
264 | ||
265 | /* Responses I have sent to the IPMB bus. */ | |
266 | IPMI_STAT_sent_lan_responses, | |
b2655f26 | 267 | |
73f2bdb9 CM |
268 | /* The response was delivered to the user. */ |
269 | IPMI_STAT_handled_lan_responses, | |
b2655f26 | 270 | |
73f2bdb9 CM |
271 | /* The response had invalid data in it. */ |
272 | IPMI_STAT_invalid_lan_responses, | |
b2655f26 | 273 | |
73f2bdb9 CM |
274 | /* The response didn't have anyone waiting for it. */ |
275 | IPMI_STAT_unhandled_lan_responses, | |
b2655f26 | 276 | |
73f2bdb9 CM |
277 | /* The command was delivered to the user. */ |
278 | IPMI_STAT_handled_commands, | |
b2655f26 | 279 | |
73f2bdb9 CM |
280 | /* The command had invalid data in it. */ |
281 | IPMI_STAT_invalid_commands, | |
b2655f26 | 282 | |
73f2bdb9 CM |
283 | /* The command didn't have anyone waiting for it. */ |
284 | IPMI_STAT_unhandled_commands, | |
b2655f26 | 285 | |
73f2bdb9 CM |
286 | /* Invalid data in an event. */ |
287 | IPMI_STAT_invalid_events, | |
b2655f26 | 288 | |
73f2bdb9 CM |
289 | /* Events that were received with the proper format. */ |
290 | IPMI_STAT_events, | |
b2655f26 | 291 | |
25176ed6 CM |
292 | /* Retransmissions on IPMB that failed. */ |
293 | IPMI_STAT_dropped_rexmit_ipmb_commands, | |
294 | ||
295 | /* Retransmissions on LAN that failed. */ | |
296 | IPMI_STAT_dropped_rexmit_lan_commands, | |
b2655f26 | 297 | |
73f2bdb9 CM |
298 | /* This *must* remain last, add new values above this. */ |
299 | IPMI_NUM_STATS | |
300 | }; | |
b2655f26 KB |
301 | |
302 | ||
1da177e4 | 303 | #define IPMI_IPMB_NUM_SEQ 64 |
c14979b9 | 304 | #define IPMI_MAX_CHANNELS 16 |
c70d7499 | 305 | struct ipmi_smi { |
1da177e4 LT |
306 | /* What interface number are we? */ |
307 | int intf_num; | |
308 | ||
393d2cc3 CM |
309 | struct kref refcount; |
310 | ||
bca0324d CM |
311 | /* Used for a list of interfaces. */ |
312 | struct list_head link; | |
313 | ||
c70d7499 CM |
314 | /* |
315 | * The list of upper layers that are using me. seq_lock | |
316 | * protects this. | |
317 | */ | |
393d2cc3 | 318 | struct list_head users; |
1da177e4 | 319 | |
b2c03941 CM |
320 | /* Information to supply to users. */ |
321 | unsigned char ipmi_version_major; | |
322 | unsigned char ipmi_version_minor; | |
323 | ||
1da177e4 LT |
324 | /* Used for wake ups at startup. */ |
325 | wait_queue_head_t waitq; | |
326 | ||
50c812b2 CM |
327 | struct bmc_device *bmc; |
328 | char *my_dev_name; | |
759643b8 | 329 | char *sysfs_name; |
1da177e4 | 330 | |
c70d7499 CM |
331 | /* |
332 | * This is the lower-layer's sender routine. Note that you | |
b2c03941 CM |
333 | * must either be holding the ipmi_interfaces_mutex or be in |
334 | * an umpreemptible region to use this. You must fetch the | |
c70d7499 CM |
335 | * value into a local variable and make sure it is not NULL. |
336 | */ | |
1da177e4 LT |
337 | struct ipmi_smi_handlers *handlers; |
338 | void *send_info; | |
339 | ||
3b625943 | 340 | #ifdef CONFIG_PROC_FS |
ac019151 CM |
341 | /* A list of proc entries for this interface. */ |
342 | struct mutex proc_entry_lock; | |
1da177e4 | 343 | struct ipmi_proc_entry *proc_entries; |
3b625943 | 344 | #endif |
1da177e4 | 345 | |
50c812b2 CM |
346 | /* Driver-model device for the system interface. */ |
347 | struct device *si_dev; | |
348 | ||
c70d7499 CM |
349 | /* |
350 | * A table of sequence numbers for this interface. We use the | |
351 | * sequence numbers for IPMB messages that go out of the | |
352 | * interface to match them up with their responses. A routine | |
353 | * is called periodically to time the items in this list. | |
354 | */ | |
1da177e4 LT |
355 | spinlock_t seq_lock; |
356 | struct seq_table seq_table[IPMI_IPMB_NUM_SEQ]; | |
357 | int curr_seq; | |
358 | ||
c70d7499 | 359 | /* |
7adf579c CM |
360 | * Messages queued for delivery. If delivery fails (out of memory |
361 | * for instance), They will stay in here to be processed later in a | |
362 | * periodic timer interrupt. The tasklet is for handling received | |
363 | * messages directly from the handler. | |
c70d7499 | 364 | */ |
1da177e4 LT |
365 | spinlock_t waiting_msgs_lock; |
366 | struct list_head waiting_msgs; | |
7adf579c CM |
367 | atomic_t watchdog_pretimeouts_to_deliver; |
368 | struct tasklet_struct recv_tasklet; | |
1da177e4 | 369 | |
c70d7499 CM |
370 | /* |
371 | * The list of command receivers that are registered for commands | |
372 | * on this interface. | |
373 | */ | |
d6dfd131 | 374 | struct mutex cmd_rcvrs_mutex; |
1da177e4 LT |
375 | struct list_head cmd_rcvrs; |
376 | ||
c70d7499 CM |
377 | /* |
378 | * Events that were queues because no one was there to receive | |
379 | * them. | |
380 | */ | |
1da177e4 LT |
381 | spinlock_t events_lock; /* For dealing with event stuff. */ |
382 | struct list_head waiting_events; | |
383 | unsigned int waiting_events_count; /* How many events in queue? */ | |
87ebd06f CM |
384 | char delivering_events; |
385 | char event_msg_printed; | |
1da177e4 | 386 | |
c70d7499 CM |
387 | /* |
388 | * The event receiver for my BMC, only really used at panic | |
389 | * shutdown as a place to store this. | |
390 | */ | |
1da177e4 LT |
391 | unsigned char event_receiver; |
392 | unsigned char event_receiver_lun; | |
393 | unsigned char local_sel_device; | |
394 | unsigned char local_event_generator; | |
395 | ||
b9675136 CM |
396 | /* For handling of maintenance mode. */ |
397 | int maintenance_mode; | |
398 | int maintenance_mode_enable; | |
399 | int auto_maintenance_timeout; | |
400 | spinlock_t maintenance_mode_lock; /* Used in a timer... */ | |
401 | ||
c70d7499 CM |
402 | /* |
403 | * A cheap hack, if this is non-null and a message to an | |
404 | * interface comes in with a NULL user, call this routine with | |
405 | * it. Note that the message will still be freed by the | |
406 | * caller. This only works on the system interface. | |
407 | */ | |
56a55ec6 | 408 | void (*null_user_handler)(ipmi_smi_t intf, struct ipmi_recv_msg *msg); |
1da177e4 | 409 | |
c70d7499 CM |
410 | /* |
411 | * When we are scanning the channels for an SMI, this will | |
412 | * tell which channel we are scanning. | |
413 | */ | |
1da177e4 LT |
414 | int curr_channel; |
415 | ||
416 | /* Channel information */ | |
417 | struct ipmi_channel channels[IPMI_MAX_CHANNELS]; | |
418 | ||
419 | /* Proc FS stuff. */ | |
420 | struct proc_dir_entry *proc_dir; | |
421 | char proc_dir_name[10]; | |
422 | ||
b2655f26 | 423 | atomic_t stats[IPMI_NUM_STATS]; |
5956dce1 KB |
424 | |
425 | /* | |
426 | * run_to_completion duplicate of smb_info, smi_info | |
427 | * and ipmi_serial_info structures. Used to decrease numbers of | |
428 | * parameters passed by "low" level IPMI code. | |
429 | */ | |
430 | int run_to_completion; | |
1da177e4 | 431 | }; |
50c812b2 | 432 | #define to_si_intf_from_dev(device) container_of(device, struct ipmi_smi, dev) |
1da177e4 | 433 | |
50c812b2 CM |
434 | /** |
435 | * The driver model view of the IPMI messaging driver. | |
436 | */ | |
fe2d5ffc DW |
437 | static struct platform_driver ipmidriver = { |
438 | .driver = { | |
439 | .name = "ipmi", | |
440 | .bus = &platform_bus_type | |
441 | } | |
50c812b2 CM |
442 | }; |
443 | static DEFINE_MUTEX(ipmidriver_mutex); | |
444 | ||
bed9759b | 445 | static LIST_HEAD(ipmi_interfaces); |
bca0324d | 446 | static DEFINE_MUTEX(ipmi_interfaces_mutex); |
1da177e4 | 447 | |
c70d7499 CM |
448 | /* |
449 | * List of watchers that want to know when smi's are added and deleted. | |
450 | */ | |
bed9759b | 451 | static LIST_HEAD(smi_watchers); |
b2c03941 | 452 | static DEFINE_MUTEX(smi_watchers_mutex); |
1da177e4 | 453 | |
393d2cc3 | 454 | |
b2655f26 KB |
455 | #define ipmi_inc_stat(intf, stat) \ |
456 | atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat]) | |
457 | #define ipmi_get_stat(intf, stat) \ | |
458 | ((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat])) | |
459 | ||
25176ed6 CM |
460 | static int is_lan_addr(struct ipmi_addr *addr) |
461 | { | |
462 | return addr->addr_type == IPMI_LAN_ADDR_TYPE; | |
463 | } | |
464 | ||
465 | static int is_ipmb_addr(struct ipmi_addr *addr) | |
466 | { | |
467 | return addr->addr_type == IPMI_IPMB_ADDR_TYPE; | |
468 | } | |
469 | ||
470 | static int is_ipmb_bcast_addr(struct ipmi_addr *addr) | |
471 | { | |
472 | return addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE; | |
473 | } | |
b2655f26 | 474 | |
393d2cc3 CM |
475 | static void free_recv_msg_list(struct list_head *q) |
476 | { | |
477 | struct ipmi_recv_msg *msg, *msg2; | |
478 | ||
479 | list_for_each_entry_safe(msg, msg2, q, link) { | |
480 | list_del(&msg->link); | |
481 | ipmi_free_recv_msg(msg); | |
482 | } | |
483 | } | |
484 | ||
f3ce6a0e CM |
485 | static void free_smi_msg_list(struct list_head *q) |
486 | { | |
487 | struct ipmi_smi_msg *msg, *msg2; | |
488 | ||
489 | list_for_each_entry_safe(msg, msg2, q, link) { | |
490 | list_del(&msg->link); | |
491 | ipmi_free_smi_msg(msg); | |
492 | } | |
493 | } | |
494 | ||
393d2cc3 CM |
495 | static void clean_up_interface_data(ipmi_smi_t intf) |
496 | { | |
497 | int i; | |
498 | struct cmd_rcvr *rcvr, *rcvr2; | |
393d2cc3 CM |
499 | struct list_head list; |
500 | ||
7adf579c CM |
501 | tasklet_kill(&intf->recv_tasklet); |
502 | ||
f3ce6a0e | 503 | free_smi_msg_list(&intf->waiting_msgs); |
393d2cc3 CM |
504 | free_recv_msg_list(&intf->waiting_events); |
505 | ||
78ba2faf CM |
506 | /* |
507 | * Wholesale remove all the entries from the list in the | |
508 | * interface and wait for RCU to know that none are in use. | |
509 | */ | |
d6dfd131 | 510 | mutex_lock(&intf->cmd_rcvrs_mutex); |
78ba2faf CM |
511 | INIT_LIST_HEAD(&list); |
512 | list_splice_init_rcu(&intf->cmd_rcvrs, &list, synchronize_rcu); | |
d6dfd131 | 513 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
514 | |
515 | list_for_each_entry_safe(rcvr, rcvr2, &list, link) | |
516 | kfree(rcvr); | |
517 | ||
518 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { | |
519 | if ((intf->seq_table[i].inuse) | |
c70d7499 | 520 | && (intf->seq_table[i].recv_msg)) |
393d2cc3 | 521 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
393d2cc3 CM |
522 | } |
523 | } | |
524 | ||
525 | static void intf_free(struct kref *ref) | |
526 | { | |
527 | ipmi_smi_t intf = container_of(ref, struct ipmi_smi, refcount); | |
528 | ||
529 | clean_up_interface_data(intf); | |
530 | kfree(intf); | |
531 | } | |
532 | ||
bca0324d | 533 | struct watcher_entry { |
b2c03941 CM |
534 | int intf_num; |
535 | ipmi_smi_t intf; | |
bca0324d | 536 | struct list_head link; |
bca0324d CM |
537 | }; |
538 | ||
1da177e4 LT |
539 | int ipmi_smi_watcher_register(struct ipmi_smi_watcher *watcher) |
540 | { | |
bca0324d | 541 | ipmi_smi_t intf; |
e381d1c4 | 542 | LIST_HEAD(to_deliver); |
bca0324d CM |
543 | struct watcher_entry *e, *e2; |
544 | ||
b2c03941 CM |
545 | mutex_lock(&smi_watchers_mutex); |
546 | ||
bca0324d CM |
547 | mutex_lock(&ipmi_interfaces_mutex); |
548 | ||
b2c03941 | 549 | /* Build a list of things to deliver. */ |
78ba2faf | 550 | list_for_each_entry(intf, &ipmi_interfaces, link) { |
bca0324d CM |
551 | if (intf->intf_num == -1) |
552 | continue; | |
553 | e = kmalloc(sizeof(*e), GFP_KERNEL); | |
554 | if (!e) | |
555 | goto out_err; | |
b2c03941 CM |
556 | kref_get(&intf->refcount); |
557 | e->intf = intf; | |
bca0324d CM |
558 | e->intf_num = intf->intf_num; |
559 | list_add_tail(&e->link, &to_deliver); | |
560 | } | |
1da177e4 | 561 | |
b2c03941 CM |
562 | /* We will succeed, so add it to the list. */ |
563 | list_add(&watcher->link, &smi_watchers); | |
bca0324d CM |
564 | |
565 | mutex_unlock(&ipmi_interfaces_mutex); | |
566 | ||
567 | list_for_each_entry_safe(e, e2, &to_deliver, link) { | |
568 | list_del(&e->link); | |
b2c03941 CM |
569 | watcher->new_smi(e->intf_num, e->intf->si_dev); |
570 | kref_put(&e->intf->refcount, intf_free); | |
bca0324d | 571 | kfree(e); |
1da177e4 | 572 | } |
bca0324d | 573 | |
b2c03941 | 574 | mutex_unlock(&smi_watchers_mutex); |
bca0324d | 575 | |
1da177e4 | 576 | return 0; |
bca0324d CM |
577 | |
578 | out_err: | |
b2c03941 CM |
579 | mutex_unlock(&ipmi_interfaces_mutex); |
580 | mutex_unlock(&smi_watchers_mutex); | |
bca0324d CM |
581 | list_for_each_entry_safe(e, e2, &to_deliver, link) { |
582 | list_del(&e->link); | |
b2c03941 | 583 | kref_put(&e->intf->refcount, intf_free); |
bca0324d CM |
584 | kfree(e); |
585 | } | |
586 | return -ENOMEM; | |
1da177e4 | 587 | } |
c70d7499 | 588 | EXPORT_SYMBOL(ipmi_smi_watcher_register); |
1da177e4 LT |
589 | |
590 | int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher) | |
591 | { | |
b2c03941 | 592 | mutex_lock(&smi_watchers_mutex); |
1da177e4 | 593 | list_del(&(watcher->link)); |
b2c03941 | 594 | mutex_unlock(&smi_watchers_mutex); |
1da177e4 LT |
595 | return 0; |
596 | } | |
c70d7499 | 597 | EXPORT_SYMBOL(ipmi_smi_watcher_unregister); |
1da177e4 | 598 | |
b2c03941 CM |
599 | /* |
600 | * Must be called with smi_watchers_mutex held. | |
601 | */ | |
1da177e4 | 602 | static void |
50c812b2 | 603 | call_smi_watchers(int i, struct device *dev) |
1da177e4 LT |
604 | { |
605 | struct ipmi_smi_watcher *w; | |
606 | ||
1da177e4 LT |
607 | list_for_each_entry(w, &smi_watchers, link) { |
608 | if (try_module_get(w->owner)) { | |
50c812b2 | 609 | w->new_smi(i, dev); |
1da177e4 LT |
610 | module_put(w->owner); |
611 | } | |
612 | } | |
1da177e4 LT |
613 | } |
614 | ||
615 | static int | |
616 | ipmi_addr_equal(struct ipmi_addr *addr1, struct ipmi_addr *addr2) | |
617 | { | |
618 | if (addr1->addr_type != addr2->addr_type) | |
619 | return 0; | |
620 | ||
621 | if (addr1->channel != addr2->channel) | |
622 | return 0; | |
623 | ||
624 | if (addr1->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
625 | struct ipmi_system_interface_addr *smi_addr1 | |
626 | = (struct ipmi_system_interface_addr *) addr1; | |
627 | struct ipmi_system_interface_addr *smi_addr2 | |
628 | = (struct ipmi_system_interface_addr *) addr2; | |
629 | return (smi_addr1->lun == smi_addr2->lun); | |
630 | } | |
631 | ||
25176ed6 | 632 | if (is_ipmb_addr(addr1) || is_ipmb_bcast_addr(addr1)) { |
1da177e4 LT |
633 | struct ipmi_ipmb_addr *ipmb_addr1 |
634 | = (struct ipmi_ipmb_addr *) addr1; | |
635 | struct ipmi_ipmb_addr *ipmb_addr2 | |
636 | = (struct ipmi_ipmb_addr *) addr2; | |
637 | ||
638 | return ((ipmb_addr1->slave_addr == ipmb_addr2->slave_addr) | |
639 | && (ipmb_addr1->lun == ipmb_addr2->lun)); | |
640 | } | |
641 | ||
25176ed6 | 642 | if (is_lan_addr(addr1)) { |
1da177e4 LT |
643 | struct ipmi_lan_addr *lan_addr1 |
644 | = (struct ipmi_lan_addr *) addr1; | |
645 | struct ipmi_lan_addr *lan_addr2 | |
646 | = (struct ipmi_lan_addr *) addr2; | |
647 | ||
648 | return ((lan_addr1->remote_SWID == lan_addr2->remote_SWID) | |
649 | && (lan_addr1->local_SWID == lan_addr2->local_SWID) | |
650 | && (lan_addr1->session_handle | |
651 | == lan_addr2->session_handle) | |
652 | && (lan_addr1->lun == lan_addr2->lun)); | |
653 | } | |
654 | ||
655 | return 1; | |
656 | } | |
657 | ||
658 | int ipmi_validate_addr(struct ipmi_addr *addr, int len) | |
659 | { | |
c70d7499 | 660 | if (len < sizeof(struct ipmi_system_interface_addr)) |
1da177e4 | 661 | return -EINVAL; |
1da177e4 LT |
662 | |
663 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
664 | if (addr->channel != IPMI_BMC_CHANNEL) | |
665 | return -EINVAL; | |
666 | return 0; | |
667 | } | |
668 | ||
669 | if ((addr->channel == IPMI_BMC_CHANNEL) | |
12fc1d7b | 670 | || (addr->channel >= IPMI_MAX_CHANNELS) |
1da177e4 LT |
671 | || (addr->channel < 0)) |
672 | return -EINVAL; | |
673 | ||
25176ed6 | 674 | if (is_ipmb_addr(addr) || is_ipmb_bcast_addr(addr)) { |
c70d7499 | 675 | if (len < sizeof(struct ipmi_ipmb_addr)) |
1da177e4 | 676 | return -EINVAL; |
1da177e4 LT |
677 | return 0; |
678 | } | |
679 | ||
25176ed6 | 680 | if (is_lan_addr(addr)) { |
c70d7499 | 681 | if (len < sizeof(struct ipmi_lan_addr)) |
1da177e4 | 682 | return -EINVAL; |
1da177e4 LT |
683 | return 0; |
684 | } | |
685 | ||
686 | return -EINVAL; | |
687 | } | |
c70d7499 | 688 | EXPORT_SYMBOL(ipmi_validate_addr); |
1da177e4 LT |
689 | |
690 | unsigned int ipmi_addr_length(int addr_type) | |
691 | { | |
692 | if (addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
693 | return sizeof(struct ipmi_system_interface_addr); | |
694 | ||
695 | if ((addr_type == IPMI_IPMB_ADDR_TYPE) | |
c70d7499 | 696 | || (addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
1da177e4 | 697 | return sizeof(struct ipmi_ipmb_addr); |
1da177e4 LT |
698 | |
699 | if (addr_type == IPMI_LAN_ADDR_TYPE) | |
700 | return sizeof(struct ipmi_lan_addr); | |
701 | ||
702 | return 0; | |
703 | } | |
c70d7499 | 704 | EXPORT_SYMBOL(ipmi_addr_length); |
1da177e4 LT |
705 | |
706 | static void deliver_response(struct ipmi_recv_msg *msg) | |
707 | { | |
8a3628d5 | 708 | if (!msg->user) { |
56a55ec6 | 709 | ipmi_smi_t intf = msg->user_msg_data; |
56a55ec6 CM |
710 | |
711 | /* Special handling for NULL users. */ | |
712 | if (intf->null_user_handler) { | |
713 | intf->null_user_handler(intf, msg); | |
b2655f26 | 714 | ipmi_inc_stat(intf, handled_local_responses); |
56a55ec6 CM |
715 | } else { |
716 | /* No handler, so give up. */ | |
b2655f26 | 717 | ipmi_inc_stat(intf, unhandled_local_responses); |
56a55ec6 CM |
718 | } |
719 | ipmi_free_recv_msg(msg); | |
720 | } else { | |
393d2cc3 CM |
721 | ipmi_user_t user = msg->user; |
722 | user->handler->ipmi_recv_hndl(msg, user->handler_data); | |
56a55ec6 | 723 | } |
1da177e4 LT |
724 | } |
725 | ||
b2c03941 CM |
726 | static void |
727 | deliver_err_response(struct ipmi_recv_msg *msg, int err) | |
728 | { | |
729 | msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
730 | msg->msg_data[0] = err; | |
731 | msg->msg.netfn |= 1; /* Convert to a response. */ | |
732 | msg->msg.data_len = 1; | |
733 | msg->msg.data = msg->msg_data; | |
734 | deliver_response(msg); | |
735 | } | |
736 | ||
c70d7499 CM |
737 | /* |
738 | * Find the next sequence number not being used and add the given | |
739 | * message with the given timeout to the sequence table. This must be | |
740 | * called with the interface's seq_lock held. | |
741 | */ | |
1da177e4 LT |
742 | static int intf_next_seq(ipmi_smi_t intf, |
743 | struct ipmi_recv_msg *recv_msg, | |
744 | unsigned long timeout, | |
745 | int retries, | |
746 | int broadcast, | |
747 | unsigned char *seq, | |
748 | long *seqid) | |
749 | { | |
750 | int rv = 0; | |
751 | unsigned int i; | |
752 | ||
c70d7499 CM |
753 | for (i = intf->curr_seq; (i+1)%IPMI_IPMB_NUM_SEQ != intf->curr_seq; |
754 | i = (i+1)%IPMI_IPMB_NUM_SEQ) { | |
8a3628d5 | 755 | if (!intf->seq_table[i].inuse) |
1da177e4 LT |
756 | break; |
757 | } | |
758 | ||
8a3628d5 | 759 | if (!intf->seq_table[i].inuse) { |
1da177e4 LT |
760 | intf->seq_table[i].recv_msg = recv_msg; |
761 | ||
c70d7499 CM |
762 | /* |
763 | * Start with the maximum timeout, when the send response | |
764 | * comes in we will start the real timer. | |
765 | */ | |
1da177e4 LT |
766 | intf->seq_table[i].timeout = MAX_MSG_TIMEOUT; |
767 | intf->seq_table[i].orig_timeout = timeout; | |
768 | intf->seq_table[i].retries_left = retries; | |
769 | intf->seq_table[i].broadcast = broadcast; | |
770 | intf->seq_table[i].inuse = 1; | |
771 | intf->seq_table[i].seqid = NEXT_SEQID(intf->seq_table[i].seqid); | |
772 | *seq = i; | |
773 | *seqid = intf->seq_table[i].seqid; | |
774 | intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ; | |
775 | } else { | |
776 | rv = -EAGAIN; | |
777 | } | |
c70d7499 | 778 | |
1da177e4 LT |
779 | return rv; |
780 | } | |
781 | ||
c70d7499 CM |
782 | /* |
783 | * Return the receive message for the given sequence number and | |
784 | * release the sequence number so it can be reused. Some other data | |
785 | * is passed in to be sure the message matches up correctly (to help | |
786 | * guard against message coming in after their timeout and the | |
787 | * sequence number being reused). | |
788 | */ | |
1da177e4 LT |
789 | static int intf_find_seq(ipmi_smi_t intf, |
790 | unsigned char seq, | |
791 | short channel, | |
792 | unsigned char cmd, | |
793 | unsigned char netfn, | |
794 | struct ipmi_addr *addr, | |
795 | struct ipmi_recv_msg **recv_msg) | |
796 | { | |
797 | int rv = -ENODEV; | |
798 | unsigned long flags; | |
799 | ||
800 | if (seq >= IPMI_IPMB_NUM_SEQ) | |
801 | return -EINVAL; | |
802 | ||
803 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
804 | if (intf->seq_table[seq].inuse) { | |
805 | struct ipmi_recv_msg *msg = intf->seq_table[seq].recv_msg; | |
806 | ||
c70d7499 CM |
807 | if ((msg->addr.channel == channel) && (msg->msg.cmd == cmd) |
808 | && (msg->msg.netfn == netfn) | |
809 | && (ipmi_addr_equal(addr, &(msg->addr)))) { | |
1da177e4 LT |
810 | *recv_msg = msg; |
811 | intf->seq_table[seq].inuse = 0; | |
812 | rv = 0; | |
813 | } | |
814 | } | |
815 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
816 | ||
817 | return rv; | |
818 | } | |
819 | ||
820 | ||
821 | /* Start the timer for a specific sequence table entry. */ | |
822 | static int intf_start_seq_timer(ipmi_smi_t intf, | |
823 | long msgid) | |
824 | { | |
825 | int rv = -ENODEV; | |
826 | unsigned long flags; | |
827 | unsigned char seq; | |
828 | unsigned long seqid; | |
829 | ||
830 | ||
831 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); | |
832 | ||
833 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
c70d7499 CM |
834 | /* |
835 | * We do this verification because the user can be deleted | |
836 | * while a message is outstanding. | |
837 | */ | |
1da177e4 | 838 | if ((intf->seq_table[seq].inuse) |
c70d7499 | 839 | && (intf->seq_table[seq].seqid == seqid)) { |
1da177e4 LT |
840 | struct seq_table *ent = &(intf->seq_table[seq]); |
841 | ent->timeout = ent->orig_timeout; | |
842 | rv = 0; | |
843 | } | |
844 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
845 | ||
846 | return rv; | |
847 | } | |
848 | ||
849 | /* Got an error for the send message for a specific sequence number. */ | |
850 | static int intf_err_seq(ipmi_smi_t intf, | |
851 | long msgid, | |
852 | unsigned int err) | |
853 | { | |
854 | int rv = -ENODEV; | |
855 | unsigned long flags; | |
856 | unsigned char seq; | |
857 | unsigned long seqid; | |
858 | struct ipmi_recv_msg *msg = NULL; | |
859 | ||
860 | ||
861 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); | |
862 | ||
863 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
c70d7499 CM |
864 | /* |
865 | * We do this verification because the user can be deleted | |
866 | * while a message is outstanding. | |
867 | */ | |
1da177e4 | 868 | if ((intf->seq_table[seq].inuse) |
c70d7499 | 869 | && (intf->seq_table[seq].seqid == seqid)) { |
1da177e4 LT |
870 | struct seq_table *ent = &(intf->seq_table[seq]); |
871 | ||
872 | ent->inuse = 0; | |
873 | msg = ent->recv_msg; | |
874 | rv = 0; | |
875 | } | |
876 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
877 | ||
b2c03941 CM |
878 | if (msg) |
879 | deliver_err_response(msg, err); | |
1da177e4 LT |
880 | |
881 | return rv; | |
882 | } | |
883 | ||
884 | ||
885 | int ipmi_create_user(unsigned int if_num, | |
886 | struct ipmi_user_hndl *handler, | |
887 | void *handler_data, | |
888 | ipmi_user_t *user) | |
889 | { | |
890 | unsigned long flags; | |
891 | ipmi_user_t new_user; | |
892 | int rv = 0; | |
893 | ipmi_smi_t intf; | |
894 | ||
c70d7499 CM |
895 | /* |
896 | * There is no module usecount here, because it's not | |
897 | * required. Since this can only be used by and called from | |
898 | * other modules, they will implicitly use this module, and | |
899 | * thus this can't be removed unless the other modules are | |
900 | * removed. | |
901 | */ | |
1da177e4 LT |
902 | |
903 | if (handler == NULL) | |
904 | return -EINVAL; | |
905 | ||
c70d7499 CM |
906 | /* |
907 | * Make sure the driver is actually initialized, this handles | |
908 | * problems with initialization order. | |
909 | */ | |
1da177e4 LT |
910 | if (!initialized) { |
911 | rv = ipmi_init_msghandler(); | |
912 | if (rv) | |
913 | return rv; | |
914 | ||
c70d7499 CM |
915 | /* |
916 | * The init code doesn't return an error if it was turned | |
917 | * off, but it won't initialize. Check that. | |
918 | */ | |
1da177e4 LT |
919 | if (!initialized) |
920 | return -ENODEV; | |
921 | } | |
922 | ||
923 | new_user = kmalloc(sizeof(*new_user), GFP_KERNEL); | |
8a3628d5 | 924 | if (!new_user) |
1da177e4 LT |
925 | return -ENOMEM; |
926 | ||
b2c03941 | 927 | mutex_lock(&ipmi_interfaces_mutex); |
bca0324d CM |
928 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
929 | if (intf->intf_num == if_num) | |
930 | goto found; | |
1da177e4 | 931 | } |
b2c03941 | 932 | /* Not found, return an error */ |
bca0324d CM |
933 | rv = -EINVAL; |
934 | goto out_kfree; | |
1da177e4 | 935 | |
bca0324d | 936 | found: |
393d2cc3 CM |
937 | /* Note that each existing user holds a refcount to the interface. */ |
938 | kref_get(&intf->refcount); | |
1da177e4 | 939 | |
393d2cc3 | 940 | kref_init(&new_user->refcount); |
1da177e4 LT |
941 | new_user->handler = handler; |
942 | new_user->handler_data = handler_data; | |
943 | new_user->intf = intf; | |
944 | new_user->gets_events = 0; | |
945 | ||
946 | if (!try_module_get(intf->handlers->owner)) { | |
947 | rv = -ENODEV; | |
5c98d29a | 948 | goto out_kref; |
1da177e4 LT |
949 | } |
950 | ||
951 | if (intf->handlers->inc_usecount) { | |
952 | rv = intf->handlers->inc_usecount(intf->send_info); | |
953 | if (rv) { | |
954 | module_put(intf->handlers->owner); | |
5c98d29a | 955 | goto out_kref; |
1da177e4 LT |
956 | } |
957 | } | |
958 | ||
c70d7499 CM |
959 | /* |
960 | * Hold the lock so intf->handlers is guaranteed to be good | |
961 | * until now | |
962 | */ | |
b2c03941 CM |
963 | mutex_unlock(&ipmi_interfaces_mutex); |
964 | ||
393d2cc3 CM |
965 | new_user->valid = 1; |
966 | spin_lock_irqsave(&intf->seq_lock, flags); | |
967 | list_add_rcu(&new_user->link, &intf->users); | |
968 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
969 | *user = new_user; | |
970 | return 0; | |
1da177e4 | 971 | |
5c98d29a | 972 | out_kref: |
393d2cc3 | 973 | kref_put(&intf->refcount, intf_free); |
5c98d29a | 974 | out_kfree: |
b2c03941 | 975 | mutex_unlock(&ipmi_interfaces_mutex); |
5c98d29a | 976 | kfree(new_user); |
1da177e4 LT |
977 | return rv; |
978 | } | |
c70d7499 | 979 | EXPORT_SYMBOL(ipmi_create_user); |
1da177e4 | 980 | |
16f4232c ZY |
981 | int ipmi_get_smi_info(int if_num, struct ipmi_smi_info *data) |
982 | { | |
983 | int rv = 0; | |
984 | ipmi_smi_t intf; | |
985 | struct ipmi_smi_handlers *handlers; | |
986 | ||
987 | mutex_lock(&ipmi_interfaces_mutex); | |
988 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
989 | if (intf->intf_num == if_num) | |
990 | goto found; | |
991 | } | |
992 | /* Not found, return an error */ | |
993 | rv = -EINVAL; | |
994 | mutex_unlock(&ipmi_interfaces_mutex); | |
995 | return rv; | |
996 | ||
997 | found: | |
998 | handlers = intf->handlers; | |
999 | rv = -ENOSYS; | |
1000 | if (handlers->get_smi_info) | |
1001 | rv = handlers->get_smi_info(intf->send_info, data); | |
1002 | mutex_unlock(&ipmi_interfaces_mutex); | |
1003 | ||
1004 | return rv; | |
1005 | } | |
1006 | EXPORT_SYMBOL(ipmi_get_smi_info); | |
1007 | ||
393d2cc3 CM |
1008 | static void free_user(struct kref *ref) |
1009 | { | |
1010 | ipmi_user_t user = container_of(ref, struct ipmi_user, refcount); | |
1011 | kfree(user); | |
1012 | } | |
1013 | ||
1014 | int ipmi_destroy_user(ipmi_user_t user) | |
1da177e4 | 1015 | { |
393d2cc3 | 1016 | ipmi_smi_t intf = user->intf; |
1da177e4 LT |
1017 | int i; |
1018 | unsigned long flags; | |
393d2cc3 | 1019 | struct cmd_rcvr *rcvr; |
393d2cc3 | 1020 | struct cmd_rcvr *rcvrs = NULL; |
1da177e4 | 1021 | |
8a3628d5 | 1022 | user->valid = 0; |
1da177e4 | 1023 | |
393d2cc3 CM |
1024 | /* Remove the user from the interface's sequence table. */ |
1025 | spin_lock_irqsave(&intf->seq_lock, flags); | |
1026 | list_del_rcu(&user->link); | |
1da177e4 | 1027 | |
e8b33617 | 1028 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
393d2cc3 | 1029 | if (intf->seq_table[i].inuse |
c70d7499 | 1030 | && (intf->seq_table[i].recv_msg->user == user)) { |
393d2cc3 | 1031 | intf->seq_table[i].inuse = 0; |
b2c03941 | 1032 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
1da177e4 LT |
1033 | } |
1034 | } | |
393d2cc3 CM |
1035 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
1036 | ||
1037 | /* | |
1038 | * Remove the user from the command receiver's table. First | |
1039 | * we build a list of everything (not using the standard link, | |
1040 | * since other things may be using it till we do | |
1041 | * synchronize_rcu()) then free everything in that list. | |
1042 | */ | |
d6dfd131 | 1043 | mutex_lock(&intf->cmd_rcvrs_mutex); |
066bb8d0 | 1044 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
1da177e4 | 1045 | if (rcvr->user == user) { |
393d2cc3 CM |
1046 | list_del_rcu(&rcvr->link); |
1047 | rcvr->next = rcvrs; | |
1048 | rcvrs = rcvr; | |
1da177e4 LT |
1049 | } |
1050 | } | |
d6dfd131 | 1051 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
1052 | synchronize_rcu(); |
1053 | while (rcvrs) { | |
1054 | rcvr = rcvrs; | |
1055 | rcvrs = rcvr->next; | |
1056 | kfree(rcvr); | |
1057 | } | |
1da177e4 | 1058 | |
b2c03941 CM |
1059 | mutex_lock(&ipmi_interfaces_mutex); |
1060 | if (intf->handlers) { | |
1061 | module_put(intf->handlers->owner); | |
1062 | if (intf->handlers->dec_usecount) | |
1063 | intf->handlers->dec_usecount(intf->send_info); | |
1064 | } | |
1065 | mutex_unlock(&ipmi_interfaces_mutex); | |
1da177e4 | 1066 | |
393d2cc3 | 1067 | kref_put(&intf->refcount, intf_free); |
1da177e4 | 1068 | |
393d2cc3 | 1069 | kref_put(&user->refcount, free_user); |
1da177e4 | 1070 | |
8a3628d5 | 1071 | return 0; |
1da177e4 | 1072 | } |
c70d7499 | 1073 | EXPORT_SYMBOL(ipmi_destroy_user); |
1da177e4 LT |
1074 | |
1075 | void ipmi_get_version(ipmi_user_t user, | |
1076 | unsigned char *major, | |
1077 | unsigned char *minor) | |
1078 | { | |
b2c03941 CM |
1079 | *major = user->intf->ipmi_version_major; |
1080 | *minor = user->intf->ipmi_version_minor; | |
1da177e4 | 1081 | } |
c70d7499 | 1082 | EXPORT_SYMBOL(ipmi_get_version); |
1da177e4 | 1083 | |
c14979b9 CM |
1084 | int ipmi_set_my_address(ipmi_user_t user, |
1085 | unsigned int channel, | |
1086 | unsigned char address) | |
1da177e4 | 1087 | { |
c14979b9 CM |
1088 | if (channel >= IPMI_MAX_CHANNELS) |
1089 | return -EINVAL; | |
1090 | user->intf->channels[channel].address = address; | |
1091 | return 0; | |
1da177e4 | 1092 | } |
c70d7499 | 1093 | EXPORT_SYMBOL(ipmi_set_my_address); |
1da177e4 | 1094 | |
c14979b9 CM |
1095 | int ipmi_get_my_address(ipmi_user_t user, |
1096 | unsigned int channel, | |
1097 | unsigned char *address) | |
1da177e4 | 1098 | { |
c14979b9 CM |
1099 | if (channel >= IPMI_MAX_CHANNELS) |
1100 | return -EINVAL; | |
1101 | *address = user->intf->channels[channel].address; | |
1102 | return 0; | |
1da177e4 | 1103 | } |
c70d7499 | 1104 | EXPORT_SYMBOL(ipmi_get_my_address); |
1da177e4 | 1105 | |
c14979b9 CM |
1106 | int ipmi_set_my_LUN(ipmi_user_t user, |
1107 | unsigned int channel, | |
1108 | unsigned char LUN) | |
1da177e4 | 1109 | { |
c14979b9 CM |
1110 | if (channel >= IPMI_MAX_CHANNELS) |
1111 | return -EINVAL; | |
1112 | user->intf->channels[channel].lun = LUN & 0x3; | |
1113 | return 0; | |
1da177e4 | 1114 | } |
c70d7499 | 1115 | EXPORT_SYMBOL(ipmi_set_my_LUN); |
1da177e4 | 1116 | |
c14979b9 CM |
1117 | int ipmi_get_my_LUN(ipmi_user_t user, |
1118 | unsigned int channel, | |
1119 | unsigned char *address) | |
1da177e4 | 1120 | { |
c14979b9 CM |
1121 | if (channel >= IPMI_MAX_CHANNELS) |
1122 | return -EINVAL; | |
1123 | *address = user->intf->channels[channel].lun; | |
1124 | return 0; | |
1da177e4 | 1125 | } |
c70d7499 | 1126 | EXPORT_SYMBOL(ipmi_get_my_LUN); |
1da177e4 | 1127 | |
b9675136 CM |
1128 | int ipmi_get_maintenance_mode(ipmi_user_t user) |
1129 | { | |
1130 | int mode; | |
1131 | unsigned long flags; | |
1132 | ||
1133 | spin_lock_irqsave(&user->intf->maintenance_mode_lock, flags); | |
1134 | mode = user->intf->maintenance_mode; | |
1135 | spin_unlock_irqrestore(&user->intf->maintenance_mode_lock, flags); | |
1136 | ||
1137 | return mode; | |
1138 | } | |
1139 | EXPORT_SYMBOL(ipmi_get_maintenance_mode); | |
1140 | ||
1141 | static void maintenance_mode_update(ipmi_smi_t intf) | |
1142 | { | |
1143 | if (intf->handlers->set_maintenance_mode) | |
1144 | intf->handlers->set_maintenance_mode( | |
1145 | intf->send_info, intf->maintenance_mode_enable); | |
1146 | } | |
1147 | ||
1148 | int ipmi_set_maintenance_mode(ipmi_user_t user, int mode) | |
1149 | { | |
1150 | int rv = 0; | |
1151 | unsigned long flags; | |
1152 | ipmi_smi_t intf = user->intf; | |
1153 | ||
1154 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); | |
1155 | if (intf->maintenance_mode != mode) { | |
1156 | switch (mode) { | |
1157 | case IPMI_MAINTENANCE_MODE_AUTO: | |
1158 | intf->maintenance_mode = mode; | |
1159 | intf->maintenance_mode_enable | |
1160 | = (intf->auto_maintenance_timeout > 0); | |
1161 | break; | |
1162 | ||
1163 | case IPMI_MAINTENANCE_MODE_OFF: | |
1164 | intf->maintenance_mode = mode; | |
1165 | intf->maintenance_mode_enable = 0; | |
1166 | break; | |
1167 | ||
1168 | case IPMI_MAINTENANCE_MODE_ON: | |
1169 | intf->maintenance_mode = mode; | |
1170 | intf->maintenance_mode_enable = 1; | |
1171 | break; | |
1172 | ||
1173 | default: | |
1174 | rv = -EINVAL; | |
1175 | goto out_unlock; | |
1176 | } | |
1177 | ||
1178 | maintenance_mode_update(intf); | |
1179 | } | |
1180 | out_unlock: | |
1181 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, flags); | |
1182 | ||
1183 | return rv; | |
1184 | } | |
1185 | EXPORT_SYMBOL(ipmi_set_maintenance_mode); | |
1186 | ||
1da177e4 LT |
1187 | int ipmi_set_gets_events(ipmi_user_t user, int val) |
1188 | { | |
393d2cc3 CM |
1189 | unsigned long flags; |
1190 | ipmi_smi_t intf = user->intf; | |
1191 | struct ipmi_recv_msg *msg, *msg2; | |
1192 | struct list_head msgs; | |
1da177e4 | 1193 | |
393d2cc3 CM |
1194 | INIT_LIST_HEAD(&msgs); |
1195 | ||
1196 | spin_lock_irqsave(&intf->events_lock, flags); | |
1da177e4 LT |
1197 | user->gets_events = val; |
1198 | ||
b2c03941 CM |
1199 | if (intf->delivering_events) |
1200 | /* | |
1201 | * Another thread is delivering events for this, so | |
1202 | * let it handle any new events. | |
1203 | */ | |
1204 | goto out; | |
1205 | ||
1206 | /* Deliver any queued events. */ | |
1207 | while (user->gets_events && !list_empty(&intf->waiting_events)) { | |
179e0917 AM |
1208 | list_for_each_entry_safe(msg, msg2, &intf->waiting_events, link) |
1209 | list_move_tail(&msg->link, &msgs); | |
4791c03d | 1210 | intf->waiting_events_count = 0; |
87ebd06f CM |
1211 | if (intf->event_msg_printed) { |
1212 | printk(KERN_WARNING PFX "Event queue no longer" | |
1213 | " full\n"); | |
1214 | intf->event_msg_printed = 0; | |
1215 | } | |
393d2cc3 | 1216 | |
b2c03941 CM |
1217 | intf->delivering_events = 1; |
1218 | spin_unlock_irqrestore(&intf->events_lock, flags); | |
1219 | ||
1220 | list_for_each_entry_safe(msg, msg2, &msgs, link) { | |
1221 | msg->user = user; | |
1222 | kref_get(&user->refcount); | |
1223 | deliver_response(msg); | |
1224 | } | |
1225 | ||
1226 | spin_lock_irqsave(&intf->events_lock, flags); | |
1227 | intf->delivering_events = 0; | |
393d2cc3 CM |
1228 | } |
1229 | ||
b2c03941 | 1230 | out: |
393d2cc3 | 1231 | spin_unlock_irqrestore(&intf->events_lock, flags); |
1da177e4 LT |
1232 | |
1233 | return 0; | |
1234 | } | |
c70d7499 | 1235 | EXPORT_SYMBOL(ipmi_set_gets_events); |
1da177e4 | 1236 | |
393d2cc3 CM |
1237 | static struct cmd_rcvr *find_cmd_rcvr(ipmi_smi_t intf, |
1238 | unsigned char netfn, | |
c69c3127 CM |
1239 | unsigned char cmd, |
1240 | unsigned char chan) | |
393d2cc3 CM |
1241 | { |
1242 | struct cmd_rcvr *rcvr; | |
1243 | ||
1244 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { | |
c69c3127 CM |
1245 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) |
1246 | && (rcvr->chans & (1 << chan))) | |
393d2cc3 CM |
1247 | return rcvr; |
1248 | } | |
1249 | return NULL; | |
1250 | } | |
1251 | ||
c69c3127 CM |
1252 | static int is_cmd_rcvr_exclusive(ipmi_smi_t intf, |
1253 | unsigned char netfn, | |
1254 | unsigned char cmd, | |
1255 | unsigned int chans) | |
1256 | { | |
1257 | struct cmd_rcvr *rcvr; | |
1258 | ||
1259 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { | |
1260 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) | |
1261 | && (rcvr->chans & chans)) | |
1262 | return 0; | |
1263 | } | |
1264 | return 1; | |
1265 | } | |
1266 | ||
1da177e4 LT |
1267 | int ipmi_register_for_cmd(ipmi_user_t user, |
1268 | unsigned char netfn, | |
c69c3127 CM |
1269 | unsigned char cmd, |
1270 | unsigned int chans) | |
1da177e4 | 1271 | { |
393d2cc3 CM |
1272 | ipmi_smi_t intf = user->intf; |
1273 | struct cmd_rcvr *rcvr; | |
393d2cc3 | 1274 | int rv = 0; |
1da177e4 LT |
1275 | |
1276 | ||
1277 | rcvr = kmalloc(sizeof(*rcvr), GFP_KERNEL); | |
8a3628d5 | 1278 | if (!rcvr) |
1da177e4 | 1279 | return -ENOMEM; |
393d2cc3 CM |
1280 | rcvr->cmd = cmd; |
1281 | rcvr->netfn = netfn; | |
c69c3127 | 1282 | rcvr->chans = chans; |
393d2cc3 | 1283 | rcvr->user = user; |
1da177e4 | 1284 | |
d6dfd131 | 1285 | mutex_lock(&intf->cmd_rcvrs_mutex); |
1da177e4 | 1286 | /* Make sure the command/netfn is not already registered. */ |
c69c3127 | 1287 | if (!is_cmd_rcvr_exclusive(intf, netfn, cmd, chans)) { |
393d2cc3 CM |
1288 | rv = -EBUSY; |
1289 | goto out_unlock; | |
1da177e4 | 1290 | } |
877197ef | 1291 | |
393d2cc3 | 1292 | list_add_rcu(&rcvr->link, &intf->cmd_rcvrs); |
1da177e4 | 1293 | |
393d2cc3 | 1294 | out_unlock: |
d6dfd131 | 1295 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
1da177e4 LT |
1296 | if (rv) |
1297 | kfree(rcvr); | |
1298 | ||
1299 | return rv; | |
1300 | } | |
c70d7499 | 1301 | EXPORT_SYMBOL(ipmi_register_for_cmd); |
1da177e4 LT |
1302 | |
1303 | int ipmi_unregister_for_cmd(ipmi_user_t user, | |
1304 | unsigned char netfn, | |
c69c3127 CM |
1305 | unsigned char cmd, |
1306 | unsigned int chans) | |
1da177e4 | 1307 | { |
393d2cc3 CM |
1308 | ipmi_smi_t intf = user->intf; |
1309 | struct cmd_rcvr *rcvr; | |
c69c3127 CM |
1310 | struct cmd_rcvr *rcvrs = NULL; |
1311 | int i, rv = -ENOENT; | |
1da177e4 | 1312 | |
d6dfd131 | 1313 | mutex_lock(&intf->cmd_rcvrs_mutex); |
c69c3127 CM |
1314 | for (i = 0; i < IPMI_NUM_CHANNELS; i++) { |
1315 | if (((1 << i) & chans) == 0) | |
1316 | continue; | |
1317 | rcvr = find_cmd_rcvr(intf, netfn, cmd, i); | |
1318 | if (rcvr == NULL) | |
1319 | continue; | |
1320 | if (rcvr->user == user) { | |
1321 | rv = 0; | |
1322 | rcvr->chans &= ~chans; | |
1323 | if (rcvr->chans == 0) { | |
1324 | list_del_rcu(&rcvr->link); | |
1325 | rcvr->next = rcvrs; | |
1326 | rcvrs = rcvr; | |
1327 | } | |
1328 | } | |
1329 | } | |
1330 | mutex_unlock(&intf->cmd_rcvrs_mutex); | |
1331 | synchronize_rcu(); | |
1332 | while (rcvrs) { | |
1333 | rcvr = rcvrs; | |
1334 | rcvrs = rcvr->next; | |
393d2cc3 | 1335 | kfree(rcvr); |
1da177e4 | 1336 | } |
c69c3127 | 1337 | return rv; |
1da177e4 | 1338 | } |
c70d7499 | 1339 | EXPORT_SYMBOL(ipmi_unregister_for_cmd); |
1da177e4 | 1340 | |
1da177e4 LT |
1341 | static unsigned char |
1342 | ipmb_checksum(unsigned char *data, int size) | |
1343 | { | |
1344 | unsigned char csum = 0; | |
c70d7499 | 1345 | |
1da177e4 LT |
1346 | for (; size > 0; size--, data++) |
1347 | csum += *data; | |
1348 | ||
1349 | return -csum; | |
1350 | } | |
1351 | ||
1352 | static inline void format_ipmb_msg(struct ipmi_smi_msg *smi_msg, | |
1353 | struct kernel_ipmi_msg *msg, | |
1354 | struct ipmi_ipmb_addr *ipmb_addr, | |
1355 | long msgid, | |
1356 | unsigned char ipmb_seq, | |
1357 | int broadcast, | |
1358 | unsigned char source_address, | |
1359 | unsigned char source_lun) | |
1360 | { | |
1361 | int i = broadcast; | |
1362 | ||
1363 | /* Format the IPMB header data. */ | |
1364 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1365 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1366 | smi_msg->data[2] = ipmb_addr->channel; | |
1367 | if (broadcast) | |
1368 | smi_msg->data[3] = 0; | |
1369 | smi_msg->data[i+3] = ipmb_addr->slave_addr; | |
1370 | smi_msg->data[i+4] = (msg->netfn << 2) | (ipmb_addr->lun & 0x3); | |
1371 | smi_msg->data[i+5] = ipmb_checksum(&(smi_msg->data[i+3]), 2); | |
1372 | smi_msg->data[i+6] = source_address; | |
1373 | smi_msg->data[i+7] = (ipmb_seq << 2) | source_lun; | |
1374 | smi_msg->data[i+8] = msg->cmd; | |
1375 | ||
1376 | /* Now tack on the data to the message. */ | |
1377 | if (msg->data_len > 0) | |
1378 | memcpy(&(smi_msg->data[i+9]), msg->data, | |
1379 | msg->data_len); | |
1380 | smi_msg->data_size = msg->data_len + 9; | |
1381 | ||
1382 | /* Now calculate the checksum and tack it on. */ | |
1383 | smi_msg->data[i+smi_msg->data_size] | |
1384 | = ipmb_checksum(&(smi_msg->data[i+6]), | |
1385 | smi_msg->data_size-6); | |
1386 | ||
c70d7499 CM |
1387 | /* |
1388 | * Add on the checksum size and the offset from the | |
1389 | * broadcast. | |
1390 | */ | |
1da177e4 LT |
1391 | smi_msg->data_size += 1 + i; |
1392 | ||
1393 | smi_msg->msgid = msgid; | |
1394 | } | |
1395 | ||
1396 | static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg, | |
1397 | struct kernel_ipmi_msg *msg, | |
1398 | struct ipmi_lan_addr *lan_addr, | |
1399 | long msgid, | |
1400 | unsigned char ipmb_seq, | |
1401 | unsigned char source_lun) | |
1402 | { | |
1403 | /* Format the IPMB header data. */ | |
1404 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1405 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1406 | smi_msg->data[2] = lan_addr->channel; | |
1407 | smi_msg->data[3] = lan_addr->session_handle; | |
1408 | smi_msg->data[4] = lan_addr->remote_SWID; | |
1409 | smi_msg->data[5] = (msg->netfn << 2) | (lan_addr->lun & 0x3); | |
1410 | smi_msg->data[6] = ipmb_checksum(&(smi_msg->data[4]), 2); | |
1411 | smi_msg->data[7] = lan_addr->local_SWID; | |
1412 | smi_msg->data[8] = (ipmb_seq << 2) | source_lun; | |
1413 | smi_msg->data[9] = msg->cmd; | |
1414 | ||
1415 | /* Now tack on the data to the message. */ | |
1416 | if (msg->data_len > 0) | |
1417 | memcpy(&(smi_msg->data[10]), msg->data, | |
1418 | msg->data_len); | |
1419 | smi_msg->data_size = msg->data_len + 10; | |
1420 | ||
1421 | /* Now calculate the checksum and tack it on. */ | |
1422 | smi_msg->data[smi_msg->data_size] | |
1423 | = ipmb_checksum(&(smi_msg->data[7]), | |
1424 | smi_msg->data_size-7); | |
1425 | ||
c70d7499 CM |
1426 | /* |
1427 | * Add on the checksum size and the offset from the | |
1428 | * broadcast. | |
1429 | */ | |
1da177e4 LT |
1430 | smi_msg->data_size += 1; |
1431 | ||
1432 | smi_msg->msgid = msgid; | |
1433 | } | |
1434 | ||
c70d7499 CM |
1435 | /* |
1436 | * Separate from ipmi_request so that the user does not have to be | |
1437 | * supplied in certain circumstances (mainly at panic time). If | |
1438 | * messages are supplied, they will be freed, even if an error | |
1439 | * occurs. | |
1440 | */ | |
393d2cc3 CM |
1441 | static int i_ipmi_request(ipmi_user_t user, |
1442 | ipmi_smi_t intf, | |
1443 | struct ipmi_addr *addr, | |
1444 | long msgid, | |
1445 | struct kernel_ipmi_msg *msg, | |
1446 | void *user_msg_data, | |
1447 | void *supplied_smi, | |
1448 | struct ipmi_recv_msg *supplied_recv, | |
1449 | int priority, | |
1450 | unsigned char source_address, | |
1451 | unsigned char source_lun, | |
1452 | int retries, | |
1453 | unsigned int retry_time_ms) | |
1da177e4 | 1454 | { |
b2c03941 CM |
1455 | int rv = 0; |
1456 | struct ipmi_smi_msg *smi_msg; | |
1457 | struct ipmi_recv_msg *recv_msg; | |
1458 | unsigned long flags; | |
1459 | struct ipmi_smi_handlers *handlers; | |
1da177e4 LT |
1460 | |
1461 | ||
c70d7499 | 1462 | if (supplied_recv) |
1da177e4 | 1463 | recv_msg = supplied_recv; |
c70d7499 | 1464 | else { |
1da177e4 | 1465 | recv_msg = ipmi_alloc_recv_msg(); |
c70d7499 | 1466 | if (recv_msg == NULL) |
1da177e4 | 1467 | return -ENOMEM; |
1da177e4 LT |
1468 | } |
1469 | recv_msg->user_msg_data = user_msg_data; | |
1470 | ||
c70d7499 | 1471 | if (supplied_smi) |
1da177e4 | 1472 | smi_msg = (struct ipmi_smi_msg *) supplied_smi; |
c70d7499 | 1473 | else { |
1da177e4 LT |
1474 | smi_msg = ipmi_alloc_smi_msg(); |
1475 | if (smi_msg == NULL) { | |
1476 | ipmi_free_recv_msg(recv_msg); | |
1477 | return -ENOMEM; | |
1478 | } | |
1479 | } | |
1480 | ||
b2c03941 CM |
1481 | rcu_read_lock(); |
1482 | handlers = intf->handlers; | |
1483 | if (!handlers) { | |
1484 | rv = -ENODEV; | |
1485 | goto out_err; | |
1486 | } | |
1487 | ||
1da177e4 | 1488 | recv_msg->user = user; |
393d2cc3 CM |
1489 | if (user) |
1490 | kref_get(&user->refcount); | |
1da177e4 | 1491 | recv_msg->msgid = msgid; |
c70d7499 CM |
1492 | /* |
1493 | * Store the message to send in the receive message so timeout | |
1494 | * responses can get the proper response data. | |
1495 | */ | |
1da177e4 LT |
1496 | recv_msg->msg = *msg; |
1497 | ||
1498 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
1499 | struct ipmi_system_interface_addr *smi_addr; | |
1500 | ||
1501 | if (msg->netfn & 1) { | |
1502 | /* Responses are not allowed to the SMI. */ | |
1503 | rv = -EINVAL; | |
1504 | goto out_err; | |
1505 | } | |
1506 | ||
1507 | smi_addr = (struct ipmi_system_interface_addr *) addr; | |
1508 | if (smi_addr->lun > 3) { | |
b2655f26 | 1509 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1510 | rv = -EINVAL; |
1511 | goto out_err; | |
1512 | } | |
1513 | ||
1514 | memcpy(&recv_msg->addr, smi_addr, sizeof(*smi_addr)); | |
1515 | ||
1516 | if ((msg->netfn == IPMI_NETFN_APP_REQUEST) | |
1517 | && ((msg->cmd == IPMI_SEND_MSG_CMD) | |
1518 | || (msg->cmd == IPMI_GET_MSG_CMD) | |
c70d7499 CM |
1519 | || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD))) { |
1520 | /* | |
1521 | * We don't let the user do these, since we manage | |
1522 | * the sequence numbers. | |
1523 | */ | |
b2655f26 | 1524 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1525 | rv = -EINVAL; |
1526 | goto out_err; | |
1527 | } | |
1528 | ||
b9675136 CM |
1529 | if (((msg->netfn == IPMI_NETFN_APP_REQUEST) |
1530 | && ((msg->cmd == IPMI_COLD_RESET_CMD) | |
1531 | || (msg->cmd == IPMI_WARM_RESET_CMD))) | |
c70d7499 | 1532 | || (msg->netfn == IPMI_NETFN_FIRMWARE_REQUEST)) { |
b9675136 CM |
1533 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); |
1534 | intf->auto_maintenance_timeout | |
1535 | = IPMI_MAINTENANCE_MODE_TIMEOUT; | |
1536 | if (!intf->maintenance_mode | |
c70d7499 | 1537 | && !intf->maintenance_mode_enable) { |
b9675136 CM |
1538 | intf->maintenance_mode_enable = 1; |
1539 | maintenance_mode_update(intf); | |
1540 | } | |
1541 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, | |
1542 | flags); | |
1543 | } | |
1544 | ||
1da177e4 | 1545 | if ((msg->data_len + 2) > IPMI_MAX_MSG_LENGTH) { |
b2655f26 | 1546 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1547 | rv = -EMSGSIZE; |
1548 | goto out_err; | |
1549 | } | |
1550 | ||
1551 | smi_msg->data[0] = (msg->netfn << 2) | (smi_addr->lun & 0x3); | |
1552 | smi_msg->data[1] = msg->cmd; | |
1553 | smi_msg->msgid = msgid; | |
1554 | smi_msg->user_data = recv_msg; | |
1555 | if (msg->data_len > 0) | |
1556 | memcpy(&(smi_msg->data[2]), msg->data, msg->data_len); | |
1557 | smi_msg->data_size = msg->data_len + 2; | |
b2655f26 | 1558 | ipmi_inc_stat(intf, sent_local_commands); |
25176ed6 | 1559 | } else if (is_ipmb_addr(addr) || is_ipmb_bcast_addr(addr)) { |
1da177e4 LT |
1560 | struct ipmi_ipmb_addr *ipmb_addr; |
1561 | unsigned char ipmb_seq; | |
1562 | long seqid; | |
1563 | int broadcast = 0; | |
1564 | ||
9c101fd4 | 1565 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
b2655f26 | 1566 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1567 | rv = -EINVAL; |
1568 | goto out_err; | |
1569 | } | |
1570 | ||
1571 | if (intf->channels[addr->channel].medium | |
c70d7499 | 1572 | != IPMI_CHANNEL_MEDIUM_IPMB) { |
b2655f26 | 1573 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1574 | rv = -EINVAL; |
1575 | goto out_err; | |
1576 | } | |
1577 | ||
1578 | if (retries < 0) { | |
1579 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) | |
1580 | retries = 0; /* Don't retry broadcasts. */ | |
1581 | else | |
1582 | retries = 4; | |
1583 | } | |
1584 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) { | |
c70d7499 CM |
1585 | /* |
1586 | * Broadcasts add a zero at the beginning of the | |
1587 | * message, but otherwise is the same as an IPMB | |
1588 | * address. | |
1589 | */ | |
1da177e4 LT |
1590 | addr->addr_type = IPMI_IPMB_ADDR_TYPE; |
1591 | broadcast = 1; | |
1592 | } | |
1593 | ||
1594 | ||
1595 | /* Default to 1 second retries. */ | |
1596 | if (retry_time_ms == 0) | |
1597 | retry_time_ms = 1000; | |
1598 | ||
c70d7499 CM |
1599 | /* |
1600 | * 9 for the header and 1 for the checksum, plus | |
1601 | * possibly one for the broadcast. | |
1602 | */ | |
1da177e4 | 1603 | if ((msg->data_len + 10 + broadcast) > IPMI_MAX_MSG_LENGTH) { |
b2655f26 | 1604 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1605 | rv = -EMSGSIZE; |
1606 | goto out_err; | |
1607 | } | |
1608 | ||
1609 | ipmb_addr = (struct ipmi_ipmb_addr *) addr; | |
1610 | if (ipmb_addr->lun > 3) { | |
b2655f26 | 1611 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1612 | rv = -EINVAL; |
1613 | goto out_err; | |
1614 | } | |
1615 | ||
1616 | memcpy(&recv_msg->addr, ipmb_addr, sizeof(*ipmb_addr)); | |
1617 | ||
1618 | if (recv_msg->msg.netfn & 0x1) { | |
c70d7499 CM |
1619 | /* |
1620 | * It's a response, so use the user's sequence | |
1621 | * from msgid. | |
1622 | */ | |
b2655f26 | 1623 | ipmi_inc_stat(intf, sent_ipmb_responses); |
1da177e4 LT |
1624 | format_ipmb_msg(smi_msg, msg, ipmb_addr, msgid, |
1625 | msgid, broadcast, | |
1626 | source_address, source_lun); | |
1627 | ||
c70d7499 CM |
1628 | /* |
1629 | * Save the receive message so we can use it | |
1630 | * to deliver the response. | |
1631 | */ | |
1da177e4 LT |
1632 | smi_msg->user_data = recv_msg; |
1633 | } else { | |
1634 | /* It's a command, so get a sequence for it. */ | |
1635 | ||
1636 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1637 | ||
c70d7499 CM |
1638 | /* |
1639 | * Create a sequence number with a 1 second | |
1640 | * timeout and 4 retries. | |
1641 | */ | |
1da177e4 LT |
1642 | rv = intf_next_seq(intf, |
1643 | recv_msg, | |
1644 | retry_time_ms, | |
1645 | retries, | |
1646 | broadcast, | |
1647 | &ipmb_seq, | |
1648 | &seqid); | |
1649 | if (rv) { | |
c70d7499 CM |
1650 | /* |
1651 | * We have used up all the sequence numbers, | |
1652 | * probably, so abort. | |
1653 | */ | |
1da177e4 LT |
1654 | spin_unlock_irqrestore(&(intf->seq_lock), |
1655 | flags); | |
1656 | goto out_err; | |
1657 | } | |
1658 | ||
25176ed6 CM |
1659 | ipmi_inc_stat(intf, sent_ipmb_commands); |
1660 | ||
c70d7499 CM |
1661 | /* |
1662 | * Store the sequence number in the message, | |
1663 | * so that when the send message response | |
1664 | * comes back we can start the timer. | |
1665 | */ | |
1da177e4 LT |
1666 | format_ipmb_msg(smi_msg, msg, ipmb_addr, |
1667 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1668 | ipmb_seq, broadcast, | |
1669 | source_address, source_lun); | |
1670 | ||
c70d7499 CM |
1671 | /* |
1672 | * Copy the message into the recv message data, so we | |
1673 | * can retransmit it later if necessary. | |
1674 | */ | |
1da177e4 LT |
1675 | memcpy(recv_msg->msg_data, smi_msg->data, |
1676 | smi_msg->data_size); | |
1677 | recv_msg->msg.data = recv_msg->msg_data; | |
1678 | recv_msg->msg.data_len = smi_msg->data_size; | |
1679 | ||
c70d7499 CM |
1680 | /* |
1681 | * We don't unlock until here, because we need | |
1682 | * to copy the completed message into the | |
1683 | * recv_msg before we release the lock. | |
1684 | * Otherwise, race conditions may bite us. I | |
1685 | * know that's pretty paranoid, but I prefer | |
1686 | * to be correct. | |
1687 | */ | |
1da177e4 LT |
1688 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
1689 | } | |
25176ed6 | 1690 | } else if (is_lan_addr(addr)) { |
1da177e4 LT |
1691 | struct ipmi_lan_addr *lan_addr; |
1692 | unsigned char ipmb_seq; | |
1693 | long seqid; | |
1694 | ||
12fc1d7b | 1695 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
b2655f26 | 1696 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1697 | rv = -EINVAL; |
1698 | goto out_err; | |
1699 | } | |
1700 | ||
1701 | if ((intf->channels[addr->channel].medium | |
c70d7499 | 1702 | != IPMI_CHANNEL_MEDIUM_8023LAN) |
1da177e4 | 1703 | && (intf->channels[addr->channel].medium |
c70d7499 | 1704 | != IPMI_CHANNEL_MEDIUM_ASYNC)) { |
b2655f26 | 1705 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1706 | rv = -EINVAL; |
1707 | goto out_err; | |
1708 | } | |
1709 | ||
1710 | retries = 4; | |
1711 | ||
1712 | /* Default to 1 second retries. */ | |
1713 | if (retry_time_ms == 0) | |
1714 | retry_time_ms = 1000; | |
1715 | ||
1716 | /* 11 for the header and 1 for the checksum. */ | |
1717 | if ((msg->data_len + 12) > IPMI_MAX_MSG_LENGTH) { | |
b2655f26 | 1718 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1719 | rv = -EMSGSIZE; |
1720 | goto out_err; | |
1721 | } | |
1722 | ||
1723 | lan_addr = (struct ipmi_lan_addr *) addr; | |
1724 | if (lan_addr->lun > 3) { | |
b2655f26 | 1725 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1726 | rv = -EINVAL; |
1727 | goto out_err; | |
1728 | } | |
1729 | ||
1730 | memcpy(&recv_msg->addr, lan_addr, sizeof(*lan_addr)); | |
1731 | ||
1732 | if (recv_msg->msg.netfn & 0x1) { | |
c70d7499 CM |
1733 | /* |
1734 | * It's a response, so use the user's sequence | |
1735 | * from msgid. | |
1736 | */ | |
b2655f26 | 1737 | ipmi_inc_stat(intf, sent_lan_responses); |
1da177e4 LT |
1738 | format_lan_msg(smi_msg, msg, lan_addr, msgid, |
1739 | msgid, source_lun); | |
1740 | ||
c70d7499 CM |
1741 | /* |
1742 | * Save the receive message so we can use it | |
1743 | * to deliver the response. | |
1744 | */ | |
1da177e4 LT |
1745 | smi_msg->user_data = recv_msg; |
1746 | } else { | |
1747 | /* It's a command, so get a sequence for it. */ | |
1748 | ||
1749 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1750 | ||
c70d7499 CM |
1751 | /* |
1752 | * Create a sequence number with a 1 second | |
1753 | * timeout and 4 retries. | |
1754 | */ | |
1da177e4 LT |
1755 | rv = intf_next_seq(intf, |
1756 | recv_msg, | |
1757 | retry_time_ms, | |
1758 | retries, | |
1759 | 0, | |
1760 | &ipmb_seq, | |
1761 | &seqid); | |
1762 | if (rv) { | |
c70d7499 CM |
1763 | /* |
1764 | * We have used up all the sequence numbers, | |
1765 | * probably, so abort. | |
1766 | */ | |
1da177e4 LT |
1767 | spin_unlock_irqrestore(&(intf->seq_lock), |
1768 | flags); | |
1769 | goto out_err; | |
1770 | } | |
1771 | ||
25176ed6 CM |
1772 | ipmi_inc_stat(intf, sent_lan_commands); |
1773 | ||
c70d7499 CM |
1774 | /* |
1775 | * Store the sequence number in the message, | |
1776 | * so that when the send message response | |
1777 | * comes back we can start the timer. | |
1778 | */ | |
1da177e4 LT |
1779 | format_lan_msg(smi_msg, msg, lan_addr, |
1780 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1781 | ipmb_seq, source_lun); | |
1782 | ||
c70d7499 CM |
1783 | /* |
1784 | * Copy the message into the recv message data, so we | |
1785 | * can retransmit it later if necessary. | |
1786 | */ | |
1da177e4 LT |
1787 | memcpy(recv_msg->msg_data, smi_msg->data, |
1788 | smi_msg->data_size); | |
1789 | recv_msg->msg.data = recv_msg->msg_data; | |
1790 | recv_msg->msg.data_len = smi_msg->data_size; | |
1791 | ||
c70d7499 CM |
1792 | /* |
1793 | * We don't unlock until here, because we need | |
1794 | * to copy the completed message into the | |
1795 | * recv_msg before we release the lock. | |
1796 | * Otherwise, race conditions may bite us. I | |
1797 | * know that's pretty paranoid, but I prefer | |
1798 | * to be correct. | |
1799 | */ | |
1da177e4 LT |
1800 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
1801 | } | |
1802 | } else { | |
1803 | /* Unknown address type. */ | |
b2655f26 | 1804 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1805 | rv = -EINVAL; |
1806 | goto out_err; | |
1807 | } | |
1808 | ||
1809 | #ifdef DEBUG_MSGING | |
1810 | { | |
1811 | int m; | |
e8b33617 | 1812 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
1813 | printk(" %2.2x", smi_msg->data[m]); |
1814 | printk("\n"); | |
1815 | } | |
1816 | #endif | |
b2c03941 CM |
1817 | |
1818 | handlers->sender(intf->send_info, smi_msg, priority); | |
1819 | rcu_read_unlock(); | |
1da177e4 LT |
1820 | |
1821 | return 0; | |
1822 | ||
1823 | out_err: | |
b2c03941 | 1824 | rcu_read_unlock(); |
1da177e4 LT |
1825 | ipmi_free_smi_msg(smi_msg); |
1826 | ipmi_free_recv_msg(recv_msg); | |
1827 | return rv; | |
1828 | } | |
1829 | ||
c14979b9 CM |
1830 | static int check_addr(ipmi_smi_t intf, |
1831 | struct ipmi_addr *addr, | |
1832 | unsigned char *saddr, | |
1833 | unsigned char *lun) | |
1834 | { | |
1835 | if (addr->channel >= IPMI_MAX_CHANNELS) | |
1836 | return -EINVAL; | |
1837 | *lun = intf->channels[addr->channel].lun; | |
1838 | *saddr = intf->channels[addr->channel].address; | |
1839 | return 0; | |
1840 | } | |
1841 | ||
1da177e4 LT |
1842 | int ipmi_request_settime(ipmi_user_t user, |
1843 | struct ipmi_addr *addr, | |
1844 | long msgid, | |
1845 | struct kernel_ipmi_msg *msg, | |
1846 | void *user_msg_data, | |
1847 | int priority, | |
1848 | int retries, | |
1849 | unsigned int retry_time_ms) | |
1850 | { | |
c14979b9 CM |
1851 | unsigned char saddr, lun; |
1852 | int rv; | |
1853 | ||
8a3628d5 | 1854 | if (!user) |
56a55ec6 | 1855 | return -EINVAL; |
c14979b9 CM |
1856 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1857 | if (rv) | |
1858 | return rv; | |
1da177e4 LT |
1859 | return i_ipmi_request(user, |
1860 | user->intf, | |
1861 | addr, | |
1862 | msgid, | |
1863 | msg, | |
1864 | user_msg_data, | |
1865 | NULL, NULL, | |
1866 | priority, | |
c14979b9 CM |
1867 | saddr, |
1868 | lun, | |
1da177e4 LT |
1869 | retries, |
1870 | retry_time_ms); | |
1871 | } | |
c70d7499 | 1872 | EXPORT_SYMBOL(ipmi_request_settime); |
1da177e4 LT |
1873 | |
1874 | int ipmi_request_supply_msgs(ipmi_user_t user, | |
1875 | struct ipmi_addr *addr, | |
1876 | long msgid, | |
1877 | struct kernel_ipmi_msg *msg, | |
1878 | void *user_msg_data, | |
1879 | void *supplied_smi, | |
1880 | struct ipmi_recv_msg *supplied_recv, | |
1881 | int priority) | |
1882 | { | |
9ebca93b | 1883 | unsigned char saddr = 0, lun = 0; |
c14979b9 CM |
1884 | int rv; |
1885 | ||
8a3628d5 | 1886 | if (!user) |
56a55ec6 | 1887 | return -EINVAL; |
c14979b9 CM |
1888 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1889 | if (rv) | |
1890 | return rv; | |
1da177e4 LT |
1891 | return i_ipmi_request(user, |
1892 | user->intf, | |
1893 | addr, | |
1894 | msgid, | |
1895 | msg, | |
1896 | user_msg_data, | |
1897 | supplied_smi, | |
1898 | supplied_recv, | |
1899 | priority, | |
c14979b9 CM |
1900 | saddr, |
1901 | lun, | |
1da177e4 LT |
1902 | -1, 0); |
1903 | } | |
c70d7499 | 1904 | EXPORT_SYMBOL(ipmi_request_supply_msgs); |
1da177e4 | 1905 | |
1aa16eea | 1906 | #ifdef CONFIG_PROC_FS |
07412736 | 1907 | static int smi_ipmb_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1908 | { |
07412736 | 1909 | ipmi_smi_t intf = m->private; |
c14979b9 | 1910 | int i; |
1da177e4 | 1911 | |
07412736 AD |
1912 | seq_printf(m, "%x", intf->channels[0].address); |
1913 | for (i = 1; i < IPMI_MAX_CHANNELS; i++) | |
1914 | seq_printf(m, " %x", intf->channels[i].address); | |
1915 | return seq_putc(m, '\n'); | |
1da177e4 LT |
1916 | } |
1917 | ||
07412736 | 1918 | static int smi_ipmb_proc_open(struct inode *inode, struct file *file) |
1da177e4 | 1919 | { |
07412736 AD |
1920 | return single_open(file, smi_ipmb_proc_show, PDE(inode)->data); |
1921 | } | |
1da177e4 | 1922 | |
07412736 AD |
1923 | static const struct file_operations smi_ipmb_proc_ops = { |
1924 | .open = smi_ipmb_proc_open, | |
1925 | .read = seq_read, | |
1926 | .llseek = seq_lseek, | |
1927 | .release = single_release, | |
1928 | }; | |
1929 | ||
1930 | static int smi_version_proc_show(struct seq_file *m, void *v) | |
1931 | { | |
1932 | ipmi_smi_t intf = m->private; | |
1933 | ||
1934 | return seq_printf(m, "%u.%u\n", | |
50c812b2 CM |
1935 | ipmi_version_major(&intf->bmc->id), |
1936 | ipmi_version_minor(&intf->bmc->id)); | |
1da177e4 LT |
1937 | } |
1938 | ||
07412736 | 1939 | static int smi_version_proc_open(struct inode *inode, struct file *file) |
1da177e4 | 1940 | { |
07412736 AD |
1941 | return single_open(file, smi_version_proc_show, PDE(inode)->data); |
1942 | } | |
1943 | ||
1944 | static const struct file_operations smi_version_proc_ops = { | |
1945 | .open = smi_version_proc_open, | |
1946 | .read = seq_read, | |
1947 | .llseek = seq_lseek, | |
1948 | .release = single_release, | |
1949 | }; | |
1da177e4 | 1950 | |
07412736 AD |
1951 | static int smi_stats_proc_show(struct seq_file *m, void *v) |
1952 | { | |
1953 | ipmi_smi_t intf = m->private; | |
1954 | ||
1955 | seq_printf(m, "sent_invalid_commands: %u\n", | |
b2655f26 | 1956 | ipmi_get_stat(intf, sent_invalid_commands)); |
07412736 | 1957 | seq_printf(m, "sent_local_commands: %u\n", |
b2655f26 | 1958 | ipmi_get_stat(intf, sent_local_commands)); |
07412736 | 1959 | seq_printf(m, "handled_local_responses: %u\n", |
b2655f26 | 1960 | ipmi_get_stat(intf, handled_local_responses)); |
07412736 | 1961 | seq_printf(m, "unhandled_local_responses: %u\n", |
b2655f26 | 1962 | ipmi_get_stat(intf, unhandled_local_responses)); |
07412736 | 1963 | seq_printf(m, "sent_ipmb_commands: %u\n", |
b2655f26 | 1964 | ipmi_get_stat(intf, sent_ipmb_commands)); |
07412736 | 1965 | seq_printf(m, "sent_ipmb_command_errs: %u\n", |
b2655f26 | 1966 | ipmi_get_stat(intf, sent_ipmb_command_errs)); |
07412736 | 1967 | seq_printf(m, "retransmitted_ipmb_commands: %u\n", |
b2655f26 | 1968 | ipmi_get_stat(intf, retransmitted_ipmb_commands)); |
07412736 | 1969 | seq_printf(m, "timed_out_ipmb_commands: %u\n", |
b2655f26 | 1970 | ipmi_get_stat(intf, timed_out_ipmb_commands)); |
07412736 | 1971 | seq_printf(m, "timed_out_ipmb_broadcasts: %u\n", |
b2655f26 | 1972 | ipmi_get_stat(intf, timed_out_ipmb_broadcasts)); |
07412736 | 1973 | seq_printf(m, "sent_ipmb_responses: %u\n", |
b2655f26 | 1974 | ipmi_get_stat(intf, sent_ipmb_responses)); |
07412736 | 1975 | seq_printf(m, "handled_ipmb_responses: %u\n", |
b2655f26 | 1976 | ipmi_get_stat(intf, handled_ipmb_responses)); |
07412736 | 1977 | seq_printf(m, "invalid_ipmb_responses: %u\n", |
b2655f26 | 1978 | ipmi_get_stat(intf, invalid_ipmb_responses)); |
07412736 | 1979 | seq_printf(m, "unhandled_ipmb_responses: %u\n", |
b2655f26 | 1980 | ipmi_get_stat(intf, unhandled_ipmb_responses)); |
07412736 | 1981 | seq_printf(m, "sent_lan_commands: %u\n", |
b2655f26 | 1982 | ipmi_get_stat(intf, sent_lan_commands)); |
07412736 | 1983 | seq_printf(m, "sent_lan_command_errs: %u\n", |
b2655f26 | 1984 | ipmi_get_stat(intf, sent_lan_command_errs)); |
07412736 | 1985 | seq_printf(m, "retransmitted_lan_commands: %u\n", |
b2655f26 | 1986 | ipmi_get_stat(intf, retransmitted_lan_commands)); |
07412736 | 1987 | seq_printf(m, "timed_out_lan_commands: %u\n", |
b2655f26 | 1988 | ipmi_get_stat(intf, timed_out_lan_commands)); |
07412736 | 1989 | seq_printf(m, "sent_lan_responses: %u\n", |
b2655f26 | 1990 | ipmi_get_stat(intf, sent_lan_responses)); |
07412736 | 1991 | seq_printf(m, "handled_lan_responses: %u\n", |
b2655f26 | 1992 | ipmi_get_stat(intf, handled_lan_responses)); |
07412736 | 1993 | seq_printf(m, "invalid_lan_responses: %u\n", |
b2655f26 | 1994 | ipmi_get_stat(intf, invalid_lan_responses)); |
07412736 | 1995 | seq_printf(m, "unhandled_lan_responses: %u\n", |
b2655f26 | 1996 | ipmi_get_stat(intf, unhandled_lan_responses)); |
07412736 | 1997 | seq_printf(m, "handled_commands: %u\n", |
b2655f26 | 1998 | ipmi_get_stat(intf, handled_commands)); |
07412736 | 1999 | seq_printf(m, "invalid_commands: %u\n", |
b2655f26 | 2000 | ipmi_get_stat(intf, invalid_commands)); |
07412736 | 2001 | seq_printf(m, "unhandled_commands: %u\n", |
b2655f26 | 2002 | ipmi_get_stat(intf, unhandled_commands)); |
07412736 | 2003 | seq_printf(m, "invalid_events: %u\n", |
b2655f26 | 2004 | ipmi_get_stat(intf, invalid_events)); |
07412736 | 2005 | seq_printf(m, "events: %u\n", |
b2655f26 | 2006 | ipmi_get_stat(intf, events)); |
07412736 | 2007 | seq_printf(m, "failed rexmit LAN msgs: %u\n", |
25176ed6 | 2008 | ipmi_get_stat(intf, dropped_rexmit_lan_commands)); |
07412736 | 2009 | seq_printf(m, "failed rexmit IPMB msgs: %u\n", |
25176ed6 | 2010 | ipmi_get_stat(intf, dropped_rexmit_ipmb_commands)); |
07412736 AD |
2011 | return 0; |
2012 | } | |
1da177e4 | 2013 | |
07412736 AD |
2014 | static int smi_stats_proc_open(struct inode *inode, struct file *file) |
2015 | { | |
2016 | return single_open(file, smi_stats_proc_show, PDE(inode)->data); | |
1da177e4 | 2017 | } |
07412736 AD |
2018 | |
2019 | static const struct file_operations smi_stats_proc_ops = { | |
2020 | .open = smi_stats_proc_open, | |
2021 | .read = seq_read, | |
2022 | .llseek = seq_lseek, | |
2023 | .release = single_release, | |
2024 | }; | |
1aa16eea | 2025 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2026 | |
2027 | int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, | |
07412736 | 2028 | const struct file_operations *proc_ops, |
99b76233 | 2029 | void *data) |
1da177e4 | 2030 | { |
1da177e4 | 2031 | int rv = 0; |
3b625943 CM |
2032 | #ifdef CONFIG_PROC_FS |
2033 | struct proc_dir_entry *file; | |
1da177e4 LT |
2034 | struct ipmi_proc_entry *entry; |
2035 | ||
2036 | /* Create a list element. */ | |
2037 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); | |
2038 | if (!entry) | |
2039 | return -ENOMEM; | |
2040 | entry->name = kmalloc(strlen(name)+1, GFP_KERNEL); | |
2041 | if (!entry->name) { | |
2042 | kfree(entry); | |
2043 | return -ENOMEM; | |
2044 | } | |
2045 | strcpy(entry->name, name); | |
2046 | ||
07412736 | 2047 | file = proc_create_data(name, 0, smi->proc_dir, proc_ops, data); |
1da177e4 LT |
2048 | if (!file) { |
2049 | kfree(entry->name); | |
2050 | kfree(entry); | |
2051 | rv = -ENOMEM; | |
2052 | } else { | |
ac019151 | 2053 | mutex_lock(&smi->proc_entry_lock); |
1da177e4 LT |
2054 | /* Stick it on the list. */ |
2055 | entry->next = smi->proc_entries; | |
2056 | smi->proc_entries = entry; | |
ac019151 | 2057 | mutex_unlock(&smi->proc_entry_lock); |
1da177e4 | 2058 | } |
3b625943 | 2059 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2060 | |
2061 | return rv; | |
2062 | } | |
c70d7499 | 2063 | EXPORT_SYMBOL(ipmi_smi_add_proc_entry); |
1da177e4 LT |
2064 | |
2065 | static int add_proc_entries(ipmi_smi_t smi, int num) | |
2066 | { | |
2067 | int rv = 0; | |
2068 | ||
3b625943 | 2069 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
2070 | sprintf(smi->proc_dir_name, "%d", num); |
2071 | smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); | |
2072 | if (!smi->proc_dir) | |
2073 | rv = -ENOMEM; | |
1da177e4 LT |
2074 | |
2075 | if (rv == 0) | |
2076 | rv = ipmi_smi_add_proc_entry(smi, "stats", | |
07412736 | 2077 | &smi_stats_proc_ops, |
99b76233 | 2078 | smi); |
1da177e4 LT |
2079 | |
2080 | if (rv == 0) | |
2081 | rv = ipmi_smi_add_proc_entry(smi, "ipmb", | |
07412736 | 2082 | &smi_ipmb_proc_ops, |
99b76233 | 2083 | smi); |
1da177e4 LT |
2084 | |
2085 | if (rv == 0) | |
2086 | rv = ipmi_smi_add_proc_entry(smi, "version", | |
07412736 | 2087 | &smi_version_proc_ops, |
99b76233 | 2088 | smi); |
3b625943 | 2089 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2090 | |
2091 | return rv; | |
2092 | } | |
2093 | ||
2094 | static void remove_proc_entries(ipmi_smi_t smi) | |
2095 | { | |
3b625943 | 2096 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
2097 | struct ipmi_proc_entry *entry; |
2098 | ||
ac019151 | 2099 | mutex_lock(&smi->proc_entry_lock); |
1da177e4 LT |
2100 | while (smi->proc_entries) { |
2101 | entry = smi->proc_entries; | |
2102 | smi->proc_entries = entry->next; | |
2103 | ||
2104 | remove_proc_entry(entry->name, smi->proc_dir); | |
2105 | kfree(entry->name); | |
2106 | kfree(entry); | |
2107 | } | |
ac019151 | 2108 | mutex_unlock(&smi->proc_entry_lock); |
1da177e4 | 2109 | remove_proc_entry(smi->proc_dir_name, proc_ipmi_root); |
3b625943 | 2110 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2111 | } |
2112 | ||
50c812b2 CM |
2113 | static int __find_bmc_guid(struct device *dev, void *data) |
2114 | { | |
2115 | unsigned char *id = data; | |
2116 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2117 | return memcmp(bmc->guid, id, 16) == 0; | |
2118 | } | |
2119 | ||
2120 | static struct bmc_device *ipmi_find_bmc_guid(struct device_driver *drv, | |
2121 | unsigned char *guid) | |
2122 | { | |
2123 | struct device *dev; | |
2124 | ||
2125 | dev = driver_find_device(drv, NULL, guid, __find_bmc_guid); | |
2126 | if (dev) | |
2127 | return dev_get_drvdata(dev); | |
2128 | else | |
2129 | return NULL; | |
2130 | } | |
2131 | ||
2132 | struct prod_dev_id { | |
2133 | unsigned int product_id; | |
2134 | unsigned char device_id; | |
2135 | }; | |
2136 | ||
2137 | static int __find_bmc_prod_dev_id(struct device *dev, void *data) | |
2138 | { | |
2139 | struct prod_dev_id *id = data; | |
2140 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2141 | ||
2142 | return (bmc->id.product_id == id->product_id | |
50c812b2 CM |
2143 | && bmc->id.device_id == id->device_id); |
2144 | } | |
2145 | ||
2146 | static struct bmc_device *ipmi_find_bmc_prod_dev_id( | |
2147 | struct device_driver *drv, | |
f0b55da0 | 2148 | unsigned int product_id, unsigned char device_id) |
50c812b2 CM |
2149 | { |
2150 | struct prod_dev_id id = { | |
2151 | .product_id = product_id, | |
2152 | .device_id = device_id, | |
2153 | }; | |
2154 | struct device *dev; | |
2155 | ||
2156 | dev = driver_find_device(drv, NULL, &id, __find_bmc_prod_dev_id); | |
2157 | if (dev) | |
2158 | return dev_get_drvdata(dev); | |
2159 | else | |
2160 | return NULL; | |
2161 | } | |
2162 | ||
2163 | static ssize_t device_id_show(struct device *dev, | |
2164 | struct device_attribute *attr, | |
2165 | char *buf) | |
2166 | { | |
2167 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2168 | ||
2169 | return snprintf(buf, 10, "%u\n", bmc->id.device_id); | |
2170 | } | |
2171 | ||
2172 | static ssize_t provides_dev_sdrs_show(struct device *dev, | |
2173 | struct device_attribute *attr, | |
2174 | char *buf) | |
2175 | { | |
2176 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2177 | ||
2178 | return snprintf(buf, 10, "%u\n", | |
7947d2cc | 2179 | (bmc->id.device_revision & 0x80) >> 7); |
50c812b2 CM |
2180 | } |
2181 | ||
2182 | static ssize_t revision_show(struct device *dev, struct device_attribute *attr, | |
2183 | char *buf) | |
2184 | { | |
2185 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2186 | ||
2187 | return snprintf(buf, 20, "%u\n", | |
7947d2cc | 2188 | bmc->id.device_revision & 0x0F); |
50c812b2 CM |
2189 | } |
2190 | ||
2191 | static ssize_t firmware_rev_show(struct device *dev, | |
2192 | struct device_attribute *attr, | |
2193 | char *buf) | |
2194 | { | |
2195 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2196 | ||
2197 | return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1, | |
2198 | bmc->id.firmware_revision_2); | |
2199 | } | |
2200 | ||
2201 | static ssize_t ipmi_version_show(struct device *dev, | |
2202 | struct device_attribute *attr, | |
2203 | char *buf) | |
2204 | { | |
2205 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2206 | ||
2207 | return snprintf(buf, 20, "%u.%u\n", | |
2208 | ipmi_version_major(&bmc->id), | |
2209 | ipmi_version_minor(&bmc->id)); | |
2210 | } | |
2211 | ||
2212 | static ssize_t add_dev_support_show(struct device *dev, | |
2213 | struct device_attribute *attr, | |
2214 | char *buf) | |
2215 | { | |
2216 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2217 | ||
2218 | return snprintf(buf, 10, "0x%02x\n", | |
2219 | bmc->id.additional_device_support); | |
2220 | } | |
2221 | ||
2222 | static ssize_t manufacturer_id_show(struct device *dev, | |
2223 | struct device_attribute *attr, | |
2224 | char *buf) | |
2225 | { | |
2226 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2227 | ||
2228 | return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id); | |
2229 | } | |
2230 | ||
2231 | static ssize_t product_id_show(struct device *dev, | |
2232 | struct device_attribute *attr, | |
2233 | char *buf) | |
2234 | { | |
2235 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2236 | ||
2237 | return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id); | |
2238 | } | |
2239 | ||
2240 | static ssize_t aux_firmware_rev_show(struct device *dev, | |
2241 | struct device_attribute *attr, | |
2242 | char *buf) | |
2243 | { | |
2244 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2245 | ||
2246 | return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n", | |
2247 | bmc->id.aux_firmware_revision[3], | |
2248 | bmc->id.aux_firmware_revision[2], | |
2249 | bmc->id.aux_firmware_revision[1], | |
2250 | bmc->id.aux_firmware_revision[0]); | |
2251 | } | |
2252 | ||
2253 | static ssize_t guid_show(struct device *dev, struct device_attribute *attr, | |
2254 | char *buf) | |
2255 | { | |
2256 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2257 | ||
2258 | return snprintf(buf, 100, "%Lx%Lx\n", | |
2259 | (long long) bmc->guid[0], | |
2260 | (long long) bmc->guid[8]); | |
2261 | } | |
2262 | ||
5e59393e | 2263 | static void remove_files(struct bmc_device *bmc) |
50c812b2 | 2264 | { |
f0b55da0 CM |
2265 | if (!bmc->dev) |
2266 | return; | |
2267 | ||
50c812b2 CM |
2268 | device_remove_file(&bmc->dev->dev, |
2269 | &bmc->device_id_attr); | |
2270 | device_remove_file(&bmc->dev->dev, | |
2271 | &bmc->provides_dev_sdrs_attr); | |
2272 | device_remove_file(&bmc->dev->dev, | |
2273 | &bmc->revision_attr); | |
2274 | device_remove_file(&bmc->dev->dev, | |
2275 | &bmc->firmware_rev_attr); | |
2276 | device_remove_file(&bmc->dev->dev, | |
2277 | &bmc->version_attr); | |
2278 | device_remove_file(&bmc->dev->dev, | |
2279 | &bmc->add_dev_support_attr); | |
2280 | device_remove_file(&bmc->dev->dev, | |
2281 | &bmc->manufacturer_id_attr); | |
2282 | device_remove_file(&bmc->dev->dev, | |
2283 | &bmc->product_id_attr); | |
5e59393e | 2284 | |
50c812b2 CM |
2285 | if (bmc->id.aux_firmware_revision_set) |
2286 | device_remove_file(&bmc->dev->dev, | |
2287 | &bmc->aux_firmware_rev_attr); | |
2288 | if (bmc->guid_set) | |
2289 | device_remove_file(&bmc->dev->dev, | |
2290 | &bmc->guid_attr); | |
5e59393e JG |
2291 | } |
2292 | ||
2293 | static void | |
2294 | cleanup_bmc_device(struct kref *ref) | |
2295 | { | |
2296 | struct bmc_device *bmc; | |
2297 | ||
2298 | bmc = container_of(ref, struct bmc_device, refcount); | |
2299 | ||
2300 | remove_files(bmc); | |
1d5636cc | 2301 | platform_device_unregister(bmc->dev); |
50c812b2 CM |
2302 | kfree(bmc); |
2303 | } | |
2304 | ||
2305 | static void ipmi_bmc_unregister(ipmi_smi_t intf) | |
2306 | { | |
2307 | struct bmc_device *bmc = intf->bmc; | |
2308 | ||
759643b8 CM |
2309 | if (intf->sysfs_name) { |
2310 | sysfs_remove_link(&intf->si_dev->kobj, intf->sysfs_name); | |
2311 | kfree(intf->sysfs_name); | |
2312 | intf->sysfs_name = NULL; | |
2313 | } | |
50c812b2 CM |
2314 | if (intf->my_dev_name) { |
2315 | sysfs_remove_link(&bmc->dev->dev.kobj, intf->my_dev_name); | |
2316 | kfree(intf->my_dev_name); | |
2317 | intf->my_dev_name = NULL; | |
2318 | } | |
2319 | ||
2320 | mutex_lock(&ipmidriver_mutex); | |
2321 | kref_put(&bmc->refcount, cleanup_bmc_device); | |
f0b55da0 | 2322 | intf->bmc = NULL; |
50c812b2 CM |
2323 | mutex_unlock(&ipmidriver_mutex); |
2324 | } | |
2325 | ||
5e59393e JG |
2326 | static int create_files(struct bmc_device *bmc) |
2327 | { | |
2328 | int err; | |
2329 | ||
f0b55da0 | 2330 | bmc->device_id_attr.attr.name = "device_id"; |
f0b55da0 CM |
2331 | bmc->device_id_attr.attr.mode = S_IRUGO; |
2332 | bmc->device_id_attr.show = device_id_show; | |
c7df670b | 2333 | sysfs_attr_init(&bmc->device_id_attr.attr); |
f0b55da0 CM |
2334 | |
2335 | bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs"; | |
f0b55da0 CM |
2336 | bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO; |
2337 | bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show; | |
c7df670b | 2338 | sysfs_attr_init(&bmc->provides_dev_sdrs_attr.attr); |
f0b55da0 CM |
2339 | |
2340 | bmc->revision_attr.attr.name = "revision"; | |
f0b55da0 CM |
2341 | bmc->revision_attr.attr.mode = S_IRUGO; |
2342 | bmc->revision_attr.show = revision_show; | |
c7df670b | 2343 | sysfs_attr_init(&bmc->revision_attr.attr); |
f0b55da0 CM |
2344 | |
2345 | bmc->firmware_rev_attr.attr.name = "firmware_revision"; | |
f0b55da0 CM |
2346 | bmc->firmware_rev_attr.attr.mode = S_IRUGO; |
2347 | bmc->firmware_rev_attr.show = firmware_rev_show; | |
c7df670b | 2348 | sysfs_attr_init(&bmc->firmware_rev_attr.attr); |
f0b55da0 CM |
2349 | |
2350 | bmc->version_attr.attr.name = "ipmi_version"; | |
f0b55da0 CM |
2351 | bmc->version_attr.attr.mode = S_IRUGO; |
2352 | bmc->version_attr.show = ipmi_version_show; | |
c7df670b | 2353 | sysfs_attr_init(&bmc->version_attr.attr); |
f0b55da0 CM |
2354 | |
2355 | bmc->add_dev_support_attr.attr.name = "additional_device_support"; | |
f0b55da0 CM |
2356 | bmc->add_dev_support_attr.attr.mode = S_IRUGO; |
2357 | bmc->add_dev_support_attr.show = add_dev_support_show; | |
c7df670b | 2358 | sysfs_attr_init(&bmc->add_dev_support_attr.attr); |
f0b55da0 CM |
2359 | |
2360 | bmc->manufacturer_id_attr.attr.name = "manufacturer_id"; | |
f0b55da0 CM |
2361 | bmc->manufacturer_id_attr.attr.mode = S_IRUGO; |
2362 | bmc->manufacturer_id_attr.show = manufacturer_id_show; | |
c7df670b | 2363 | sysfs_attr_init(&bmc->manufacturer_id_attr.attr); |
f0b55da0 CM |
2364 | |
2365 | bmc->product_id_attr.attr.name = "product_id"; | |
f0b55da0 CM |
2366 | bmc->product_id_attr.attr.mode = S_IRUGO; |
2367 | bmc->product_id_attr.show = product_id_show; | |
c7df670b | 2368 | sysfs_attr_init(&bmc->product_id_attr.attr); |
f0b55da0 CM |
2369 | |
2370 | bmc->guid_attr.attr.name = "guid"; | |
f0b55da0 CM |
2371 | bmc->guid_attr.attr.mode = S_IRUGO; |
2372 | bmc->guid_attr.show = guid_show; | |
c7df670b | 2373 | sysfs_attr_init(&bmc->guid_attr.attr); |
f0b55da0 CM |
2374 | |
2375 | bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision"; | |
f0b55da0 CM |
2376 | bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO; |
2377 | bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show; | |
c7df670b | 2378 | sysfs_attr_init(&bmc->aux_firmware_rev_attr.attr); |
f0b55da0 | 2379 | |
5e59393e JG |
2380 | err = device_create_file(&bmc->dev->dev, |
2381 | &bmc->device_id_attr); | |
c70d7499 CM |
2382 | if (err) |
2383 | goto out; | |
5e59393e JG |
2384 | err = device_create_file(&bmc->dev->dev, |
2385 | &bmc->provides_dev_sdrs_attr); | |
c70d7499 CM |
2386 | if (err) |
2387 | goto out_devid; | |
5e59393e JG |
2388 | err = device_create_file(&bmc->dev->dev, |
2389 | &bmc->revision_attr); | |
c70d7499 CM |
2390 | if (err) |
2391 | goto out_sdrs; | |
5e59393e JG |
2392 | err = device_create_file(&bmc->dev->dev, |
2393 | &bmc->firmware_rev_attr); | |
c70d7499 CM |
2394 | if (err) |
2395 | goto out_rev; | |
5e59393e JG |
2396 | err = device_create_file(&bmc->dev->dev, |
2397 | &bmc->version_attr); | |
c70d7499 CM |
2398 | if (err) |
2399 | goto out_firm; | |
5e59393e JG |
2400 | err = device_create_file(&bmc->dev->dev, |
2401 | &bmc->add_dev_support_attr); | |
c70d7499 CM |
2402 | if (err) |
2403 | goto out_version; | |
5e59393e JG |
2404 | err = device_create_file(&bmc->dev->dev, |
2405 | &bmc->manufacturer_id_attr); | |
c70d7499 CM |
2406 | if (err) |
2407 | goto out_add_dev; | |
5e59393e JG |
2408 | err = device_create_file(&bmc->dev->dev, |
2409 | &bmc->product_id_attr); | |
c70d7499 CM |
2410 | if (err) |
2411 | goto out_manu; | |
5e59393e JG |
2412 | if (bmc->id.aux_firmware_revision_set) { |
2413 | err = device_create_file(&bmc->dev->dev, | |
2414 | &bmc->aux_firmware_rev_attr); | |
c70d7499 CM |
2415 | if (err) |
2416 | goto out_prod_id; | |
5e59393e JG |
2417 | } |
2418 | if (bmc->guid_set) { | |
2419 | err = device_create_file(&bmc->dev->dev, | |
2420 | &bmc->guid_attr); | |
c70d7499 CM |
2421 | if (err) |
2422 | goto out_aux_firm; | |
5e59393e JG |
2423 | } |
2424 | ||
2425 | return 0; | |
2426 | ||
2427 | out_aux_firm: | |
2428 | if (bmc->id.aux_firmware_revision_set) | |
2429 | device_remove_file(&bmc->dev->dev, | |
2430 | &bmc->aux_firmware_rev_attr); | |
2431 | out_prod_id: | |
2432 | device_remove_file(&bmc->dev->dev, | |
2433 | &bmc->product_id_attr); | |
2434 | out_manu: | |
2435 | device_remove_file(&bmc->dev->dev, | |
2436 | &bmc->manufacturer_id_attr); | |
2437 | out_add_dev: | |
2438 | device_remove_file(&bmc->dev->dev, | |
2439 | &bmc->add_dev_support_attr); | |
2440 | out_version: | |
2441 | device_remove_file(&bmc->dev->dev, | |
2442 | &bmc->version_attr); | |
2443 | out_firm: | |
2444 | device_remove_file(&bmc->dev->dev, | |
2445 | &bmc->firmware_rev_attr); | |
2446 | out_rev: | |
2447 | device_remove_file(&bmc->dev->dev, | |
2448 | &bmc->revision_attr); | |
2449 | out_sdrs: | |
2450 | device_remove_file(&bmc->dev->dev, | |
2451 | &bmc->provides_dev_sdrs_attr); | |
2452 | out_devid: | |
2453 | device_remove_file(&bmc->dev->dev, | |
2454 | &bmc->device_id_attr); | |
2455 | out: | |
2456 | return err; | |
2457 | } | |
2458 | ||
759643b8 CM |
2459 | static int ipmi_bmc_register(ipmi_smi_t intf, int ifnum, |
2460 | const char *sysfs_name) | |
50c812b2 CM |
2461 | { |
2462 | int rv; | |
2463 | struct bmc_device *bmc = intf->bmc; | |
2464 | struct bmc_device *old_bmc; | |
2465 | int size; | |
2466 | char dummy[1]; | |
2467 | ||
2468 | mutex_lock(&ipmidriver_mutex); | |
2469 | ||
2470 | /* | |
2471 | * Try to find if there is an bmc_device struct | |
2472 | * representing the interfaced BMC already | |
2473 | */ | |
2474 | if (bmc->guid_set) | |
fe2d5ffc | 2475 | old_bmc = ipmi_find_bmc_guid(&ipmidriver.driver, bmc->guid); |
50c812b2 | 2476 | else |
fe2d5ffc | 2477 | old_bmc = ipmi_find_bmc_prod_dev_id(&ipmidriver.driver, |
50c812b2 CM |
2478 | bmc->id.product_id, |
2479 | bmc->id.device_id); | |
2480 | ||
2481 | /* | |
2482 | * If there is already an bmc_device, free the new one, | |
2483 | * otherwise register the new BMC device | |
2484 | */ | |
2485 | if (old_bmc) { | |
2486 | kfree(bmc); | |
2487 | intf->bmc = old_bmc; | |
2488 | bmc = old_bmc; | |
2489 | ||
2490 | kref_get(&bmc->refcount); | |
2491 | mutex_unlock(&ipmidriver_mutex); | |
2492 | ||
2493 | printk(KERN_INFO | |
2494 | "ipmi: interfacing existing BMC (man_id: 0x%6.6x," | |
2495 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
2496 | bmc->id.manufacturer_id, | |
2497 | bmc->id.product_id, | |
2498 | bmc->id.device_id); | |
2499 | } else { | |
f0b55da0 CM |
2500 | char name[14]; |
2501 | unsigned char orig_dev_id = bmc->id.device_id; | |
2502 | int warn_printed = 0; | |
2503 | ||
2504 | snprintf(name, sizeof(name), | |
2505 | "ipmi_bmc.%4.4x", bmc->id.product_id); | |
2506 | ||
fe2d5ffc | 2507 | while (ipmi_find_bmc_prod_dev_id(&ipmidriver.driver, |
f0b55da0 | 2508 | bmc->id.product_id, |
1d5636cc | 2509 | bmc->id.device_id)) { |
f0b55da0 CM |
2510 | if (!warn_printed) { |
2511 | printk(KERN_WARNING PFX | |
2512 | "This machine has two different BMCs" | |
2513 | " with the same product id and device" | |
2514 | " id. This is an error in the" | |
2515 | " firmware, but incrementing the" | |
2516 | " device id to work around the problem." | |
2517 | " Prod ID = 0x%x, Dev ID = 0x%x\n", | |
2518 | bmc->id.product_id, bmc->id.device_id); | |
2519 | warn_printed = 1; | |
2520 | } | |
2521 | bmc->id.device_id++; /* Wraps at 255 */ | |
2522 | if (bmc->id.device_id == orig_dev_id) { | |
2523 | printk(KERN_ERR PFX | |
2524 | "Out of device ids!\n"); | |
2525 | break; | |
2526 | } | |
2527 | } | |
2528 | ||
2529 | bmc->dev = platform_device_alloc(name, bmc->id.device_id); | |
8a3628d5 | 2530 | if (!bmc->dev) { |
f0b55da0 | 2531 | mutex_unlock(&ipmidriver_mutex); |
50c812b2 CM |
2532 | printk(KERN_ERR |
2533 | "ipmi_msghandler:" | |
2534 | " Unable to allocate platform device\n"); | |
2535 | return -ENOMEM; | |
2536 | } | |
fe2d5ffc | 2537 | bmc->dev->dev.driver = &ipmidriver.driver; |
50c812b2 CM |
2538 | dev_set_drvdata(&bmc->dev->dev, bmc); |
2539 | kref_init(&bmc->refcount); | |
2540 | ||
b48f5457 | 2541 | rv = platform_device_add(bmc->dev); |
50c812b2 CM |
2542 | mutex_unlock(&ipmidriver_mutex); |
2543 | if (rv) { | |
f0b55da0 CM |
2544 | platform_device_put(bmc->dev); |
2545 | bmc->dev = NULL; | |
50c812b2 CM |
2546 | printk(KERN_ERR |
2547 | "ipmi_msghandler:" | |
2548 | " Unable to register bmc device: %d\n", | |
2549 | rv); | |
c70d7499 CM |
2550 | /* |
2551 | * Don't go to out_err, you can only do that if | |
2552 | * the device is registered already. | |
2553 | */ | |
50c812b2 CM |
2554 | return rv; |
2555 | } | |
2556 | ||
5e59393e JG |
2557 | rv = create_files(bmc); |
2558 | if (rv) { | |
2559 | mutex_lock(&ipmidriver_mutex); | |
2560 | platform_device_unregister(bmc->dev); | |
2561 | mutex_unlock(&ipmidriver_mutex); | |
2562 | ||
2563 | return rv; | |
2564 | } | |
50c812b2 | 2565 | |
279fbd0c MS |
2566 | dev_info(intf->si_dev, "Found new BMC (man_id: 0x%6.6x, " |
2567 | "prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
2568 | bmc->id.manufacturer_id, | |
2569 | bmc->id.product_id, | |
2570 | bmc->id.device_id); | |
50c812b2 CM |
2571 | } |
2572 | ||
2573 | /* | |
2574 | * create symlink from system interface device to bmc device | |
2575 | * and back. | |
2576 | */ | |
759643b8 CM |
2577 | intf->sysfs_name = kstrdup(sysfs_name, GFP_KERNEL); |
2578 | if (!intf->sysfs_name) { | |
2579 | rv = -ENOMEM; | |
2580 | printk(KERN_ERR | |
2581 | "ipmi_msghandler: allocate link to BMC: %d\n", | |
2582 | rv); | |
2583 | goto out_err; | |
2584 | } | |
2585 | ||
50c812b2 | 2586 | rv = sysfs_create_link(&intf->si_dev->kobj, |
759643b8 | 2587 | &bmc->dev->dev.kobj, intf->sysfs_name); |
50c812b2 | 2588 | if (rv) { |
759643b8 CM |
2589 | kfree(intf->sysfs_name); |
2590 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2591 | printk(KERN_ERR |
2592 | "ipmi_msghandler: Unable to create bmc symlink: %d\n", | |
2593 | rv); | |
2594 | goto out_err; | |
2595 | } | |
2596 | ||
759643b8 | 2597 | size = snprintf(dummy, 0, "ipmi%d", ifnum); |
50c812b2 CM |
2598 | intf->my_dev_name = kmalloc(size+1, GFP_KERNEL); |
2599 | if (!intf->my_dev_name) { | |
759643b8 CM |
2600 | kfree(intf->sysfs_name); |
2601 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2602 | rv = -ENOMEM; |
2603 | printk(KERN_ERR | |
2604 | "ipmi_msghandler: allocate link from BMC: %d\n", | |
2605 | rv); | |
2606 | goto out_err; | |
2607 | } | |
759643b8 | 2608 | snprintf(intf->my_dev_name, size+1, "ipmi%d", ifnum); |
50c812b2 CM |
2609 | |
2610 | rv = sysfs_create_link(&bmc->dev->dev.kobj, &intf->si_dev->kobj, | |
2611 | intf->my_dev_name); | |
2612 | if (rv) { | |
759643b8 CM |
2613 | kfree(intf->sysfs_name); |
2614 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2615 | kfree(intf->my_dev_name); |
2616 | intf->my_dev_name = NULL; | |
2617 | printk(KERN_ERR | |
2618 | "ipmi_msghandler:" | |
2619 | " Unable to create symlink to bmc: %d\n", | |
2620 | rv); | |
2621 | goto out_err; | |
2622 | } | |
2623 | ||
2624 | return 0; | |
2625 | ||
2626 | out_err: | |
2627 | ipmi_bmc_unregister(intf); | |
2628 | return rv; | |
2629 | } | |
2630 | ||
2631 | static int | |
2632 | send_guid_cmd(ipmi_smi_t intf, int chan) | |
2633 | { | |
2634 | struct kernel_ipmi_msg msg; | |
2635 | struct ipmi_system_interface_addr si; | |
2636 | ||
2637 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2638 | si.channel = IPMI_BMC_CHANNEL; | |
2639 | si.lun = 0; | |
2640 | ||
2641 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2642 | msg.cmd = IPMI_GET_DEVICE_GUID_CMD; | |
2643 | msg.data = NULL; | |
2644 | msg.data_len = 0; | |
2645 | return i_ipmi_request(NULL, | |
2646 | intf, | |
2647 | (struct ipmi_addr *) &si, | |
2648 | 0, | |
2649 | &msg, | |
2650 | intf, | |
2651 | NULL, | |
2652 | NULL, | |
2653 | 0, | |
2654 | intf->channels[0].address, | |
2655 | intf->channels[0].lun, | |
2656 | -1, 0); | |
2657 | } | |
2658 | ||
2659 | static void | |
2660 | guid_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) | |
2661 | { | |
2662 | if ((msg->addr.addr_type != IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
2663 | || (msg->msg.netfn != IPMI_NETFN_APP_RESPONSE) | |
2664 | || (msg->msg.cmd != IPMI_GET_DEVICE_GUID_CMD)) | |
2665 | /* Not for me */ | |
2666 | return; | |
2667 | ||
2668 | if (msg->msg.data[0] != 0) { | |
2669 | /* Error from getting the GUID, the BMC doesn't have one. */ | |
2670 | intf->bmc->guid_set = 0; | |
2671 | goto out; | |
2672 | } | |
2673 | ||
2674 | if (msg->msg.data_len < 17) { | |
2675 | intf->bmc->guid_set = 0; | |
2676 | printk(KERN_WARNING PFX | |
2677 | "guid_handler: The GUID response from the BMC was too" | |
2678 | " short, it was %d but should have been 17. Assuming" | |
2679 | " GUID is not available.\n", | |
2680 | msg->msg.data_len); | |
2681 | goto out; | |
2682 | } | |
2683 | ||
2684 | memcpy(intf->bmc->guid, msg->msg.data, 16); | |
2685 | intf->bmc->guid_set = 1; | |
2686 | out: | |
2687 | wake_up(&intf->waitq); | |
2688 | } | |
2689 | ||
2690 | static void | |
2691 | get_guid(ipmi_smi_t intf) | |
2692 | { | |
2693 | int rv; | |
2694 | ||
2695 | intf->bmc->guid_set = 0x2; | |
2696 | intf->null_user_handler = guid_handler; | |
2697 | rv = send_guid_cmd(intf, 0); | |
2698 | if (rv) | |
2699 | /* Send failed, no GUID available. */ | |
2700 | intf->bmc->guid_set = 0; | |
2701 | wait_event(intf->waitq, intf->bmc->guid_set != 2); | |
2702 | intf->null_user_handler = NULL; | |
2703 | } | |
2704 | ||
1da177e4 LT |
2705 | static int |
2706 | send_channel_info_cmd(ipmi_smi_t intf, int chan) | |
2707 | { | |
2708 | struct kernel_ipmi_msg msg; | |
2709 | unsigned char data[1]; | |
2710 | struct ipmi_system_interface_addr si; | |
2711 | ||
2712 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2713 | si.channel = IPMI_BMC_CHANNEL; | |
2714 | si.lun = 0; | |
2715 | ||
2716 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2717 | msg.cmd = IPMI_GET_CHANNEL_INFO_CMD; | |
2718 | msg.data = data; | |
2719 | msg.data_len = 1; | |
2720 | data[0] = chan; | |
2721 | return i_ipmi_request(NULL, | |
2722 | intf, | |
2723 | (struct ipmi_addr *) &si, | |
2724 | 0, | |
2725 | &msg, | |
56a55ec6 | 2726 | intf, |
1da177e4 LT |
2727 | NULL, |
2728 | NULL, | |
2729 | 0, | |
c14979b9 CM |
2730 | intf->channels[0].address, |
2731 | intf->channels[0].lun, | |
1da177e4 LT |
2732 | -1, 0); |
2733 | } | |
2734 | ||
2735 | static void | |
56a55ec6 | 2736 | channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 LT |
2737 | { |
2738 | int rv = 0; | |
2739 | int chan; | |
2740 | ||
56a55ec6 CM |
2741 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
2742 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
c70d7499 | 2743 | && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD)) { |
1da177e4 | 2744 | /* It's the one we want */ |
56a55ec6 | 2745 | if (msg->msg.data[0] != 0) { |
1da177e4 LT |
2746 | /* Got an error from the channel, just go on. */ |
2747 | ||
56a55ec6 | 2748 | if (msg->msg.data[0] == IPMI_INVALID_COMMAND_ERR) { |
c70d7499 CM |
2749 | /* |
2750 | * If the MC does not support this | |
2751 | * command, that is legal. We just | |
2752 | * assume it has one IPMB at channel | |
2753 | * zero. | |
2754 | */ | |
1da177e4 LT |
2755 | intf->channels[0].medium |
2756 | = IPMI_CHANNEL_MEDIUM_IPMB; | |
2757 | intf->channels[0].protocol | |
2758 | = IPMI_CHANNEL_PROTOCOL_IPMB; | |
2759 | rv = -ENOSYS; | |
2760 | ||
2761 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2762 | wake_up(&intf->waitq); | |
2763 | goto out; | |
2764 | } | |
2765 | goto next_channel; | |
2766 | } | |
56a55ec6 | 2767 | if (msg->msg.data_len < 4) { |
1da177e4 LT |
2768 | /* Message not big enough, just go on. */ |
2769 | goto next_channel; | |
2770 | } | |
2771 | chan = intf->curr_channel; | |
56a55ec6 CM |
2772 | intf->channels[chan].medium = msg->msg.data[2] & 0x7f; |
2773 | intf->channels[chan].protocol = msg->msg.data[3] & 0x1f; | |
1da177e4 | 2774 | |
c70d7499 | 2775 | next_channel: |
1da177e4 LT |
2776 | intf->curr_channel++; |
2777 | if (intf->curr_channel >= IPMI_MAX_CHANNELS) | |
2778 | wake_up(&intf->waitq); | |
2779 | else | |
2780 | rv = send_channel_info_cmd(intf, intf->curr_channel); | |
2781 | ||
2782 | if (rv) { | |
2783 | /* Got an error somehow, just give up. */ | |
2784 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2785 | wake_up(&intf->waitq); | |
2786 | ||
2787 | printk(KERN_WARNING PFX | |
2788 | "Error sending channel information: %d\n", | |
2789 | rv); | |
2790 | } | |
2791 | } | |
2792 | out: | |
2793 | return; | |
2794 | } | |
2795 | ||
895dcfd1 | 2796 | static void ipmi_poll(ipmi_smi_t intf) |
fcfa4724 | 2797 | { |
fcfa4724 CM |
2798 | if (intf->handlers->poll) |
2799 | intf->handlers->poll(intf->send_info); | |
7adf579c CM |
2800 | /* In case something came in */ |
2801 | handle_new_recv_msgs(intf); | |
fcfa4724 | 2802 | } |
895dcfd1 CM |
2803 | |
2804 | void ipmi_poll_interface(ipmi_user_t user) | |
2805 | { | |
2806 | ipmi_poll(user->intf); | |
fcfa4724 | 2807 | } |
c70d7499 | 2808 | EXPORT_SYMBOL(ipmi_poll_interface); |
fcfa4724 | 2809 | |
1da177e4 LT |
2810 | int ipmi_register_smi(struct ipmi_smi_handlers *handlers, |
2811 | void *send_info, | |
50c812b2 CM |
2812 | struct ipmi_device_id *device_id, |
2813 | struct device *si_dev, | |
759643b8 | 2814 | const char *sysfs_name, |
453823ba | 2815 | unsigned char slave_addr) |
1da177e4 LT |
2816 | { |
2817 | int i, j; | |
2818 | int rv; | |
393d2cc3 | 2819 | ipmi_smi_t intf; |
bca0324d | 2820 | ipmi_smi_t tintf; |
bca0324d | 2821 | struct list_head *link; |
1da177e4 | 2822 | |
c70d7499 CM |
2823 | /* |
2824 | * Make sure the driver is actually initialized, this handles | |
2825 | * problems with initialization order. | |
2826 | */ | |
1da177e4 LT |
2827 | if (!initialized) { |
2828 | rv = ipmi_init_msghandler(); | |
2829 | if (rv) | |
2830 | return rv; | |
c70d7499 CM |
2831 | /* |
2832 | * The init code doesn't return an error if it was turned | |
2833 | * off, but it won't initialize. Check that. | |
2834 | */ | |
1da177e4 LT |
2835 | if (!initialized) |
2836 | return -ENODEV; | |
2837 | } | |
2838 | ||
dd00cc48 | 2839 | intf = kzalloc(sizeof(*intf), GFP_KERNEL); |
393d2cc3 | 2840 | if (!intf) |
1da177e4 | 2841 | return -ENOMEM; |
b2c03941 CM |
2842 | |
2843 | intf->ipmi_version_major = ipmi_version_major(device_id); | |
2844 | intf->ipmi_version_minor = ipmi_version_minor(device_id); | |
2845 | ||
50c812b2 CM |
2846 | intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL); |
2847 | if (!intf->bmc) { | |
2848 | kfree(intf); | |
2849 | return -ENOMEM; | |
2850 | } | |
bca0324d | 2851 | intf->intf_num = -1; /* Mark it invalid for now. */ |
393d2cc3 | 2852 | kref_init(&intf->refcount); |
50c812b2 CM |
2853 | intf->bmc->id = *device_id; |
2854 | intf->si_dev = si_dev; | |
393d2cc3 CM |
2855 | for (j = 0; j < IPMI_MAX_CHANNELS; j++) { |
2856 | intf->channels[j].address = IPMI_BMC_SLAVE_ADDR; | |
2857 | intf->channels[j].lun = 2; | |
2858 | } | |
2859 | if (slave_addr != 0) | |
2860 | intf->channels[0].address = slave_addr; | |
2861 | INIT_LIST_HEAD(&intf->users); | |
2862 | intf->handlers = handlers; | |
2863 | intf->send_info = send_info; | |
2864 | spin_lock_init(&intf->seq_lock); | |
2865 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) { | |
2866 | intf->seq_table[j].inuse = 0; | |
2867 | intf->seq_table[j].seqid = 0; | |
2868 | } | |
2869 | intf->curr_seq = 0; | |
2870 | #ifdef CONFIG_PROC_FS | |
ac019151 | 2871 | mutex_init(&intf->proc_entry_lock); |
393d2cc3 CM |
2872 | #endif |
2873 | spin_lock_init(&intf->waiting_msgs_lock); | |
2874 | INIT_LIST_HEAD(&intf->waiting_msgs); | |
7adf579c CM |
2875 | tasklet_init(&intf->recv_tasklet, |
2876 | smi_recv_tasklet, | |
2877 | (unsigned long) intf); | |
2878 | atomic_set(&intf->watchdog_pretimeouts_to_deliver, 0); | |
393d2cc3 CM |
2879 | spin_lock_init(&intf->events_lock); |
2880 | INIT_LIST_HEAD(&intf->waiting_events); | |
2881 | intf->waiting_events_count = 0; | |
d6dfd131 | 2882 | mutex_init(&intf->cmd_rcvrs_mutex); |
b9675136 | 2883 | spin_lock_init(&intf->maintenance_mode_lock); |
393d2cc3 CM |
2884 | INIT_LIST_HEAD(&intf->cmd_rcvrs); |
2885 | init_waitqueue_head(&intf->waitq); | |
b2655f26 KB |
2886 | for (i = 0; i < IPMI_NUM_STATS; i++) |
2887 | atomic_set(&intf->stats[i], 0); | |
393d2cc3 | 2888 | |
393d2cc3 | 2889 | intf->proc_dir = NULL; |
1da177e4 | 2890 | |
b2c03941 | 2891 | mutex_lock(&smi_watchers_mutex); |
bca0324d CM |
2892 | mutex_lock(&ipmi_interfaces_mutex); |
2893 | /* Look for a hole in the numbers. */ | |
2894 | i = 0; | |
2895 | link = &ipmi_interfaces; | |
2896 | list_for_each_entry_rcu(tintf, &ipmi_interfaces, link) { | |
2897 | if (tintf->intf_num != i) { | |
2898 | link = &tintf->link; | |
1da177e4 LT |
2899 | break; |
2900 | } | |
bca0324d | 2901 | i++; |
1da177e4 | 2902 | } |
bca0324d CM |
2903 | /* Add the new interface in numeric order. */ |
2904 | if (i == 0) | |
2905 | list_add_rcu(&intf->link, &ipmi_interfaces); | |
2906 | else | |
2907 | list_add_tail_rcu(&intf->link, link); | |
1da177e4 | 2908 | |
453823ba CM |
2909 | rv = handlers->start_processing(send_info, intf); |
2910 | if (rv) | |
2911 | goto out; | |
1da177e4 | 2912 | |
50c812b2 CM |
2913 | get_guid(intf); |
2914 | ||
b2c03941 | 2915 | if ((intf->ipmi_version_major > 1) |
c70d7499 CM |
2916 | || ((intf->ipmi_version_major == 1) |
2917 | && (intf->ipmi_version_minor >= 5))) { | |
2918 | /* | |
2919 | * Start scanning the channels to see what is | |
2920 | * available. | |
2921 | */ | |
393d2cc3 CM |
2922 | intf->null_user_handler = channel_handler; |
2923 | intf->curr_channel = 0; | |
2924 | rv = send_channel_info_cmd(intf, 0); | |
2925 | if (rv) | |
2926 | goto out; | |
1da177e4 | 2927 | |
393d2cc3 CM |
2928 | /* Wait for the channel info to be read. */ |
2929 | wait_event(intf->waitq, | |
2930 | intf->curr_channel >= IPMI_MAX_CHANNELS); | |
50c812b2 | 2931 | intf->null_user_handler = NULL; |
393d2cc3 CM |
2932 | } else { |
2933 | /* Assume a single IPMB channel at zero. */ | |
2934 | intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; | |
2935 | intf->channels[0].protocol = IPMI_CHANNEL_PROTOCOL_IPMB; | |
9a2845c4 | 2936 | intf->curr_channel = IPMI_MAX_CHANNELS; |
1da177e4 LT |
2937 | } |
2938 | ||
393d2cc3 CM |
2939 | if (rv == 0) |
2940 | rv = add_proc_entries(intf, i); | |
1da177e4 | 2941 | |
759643b8 | 2942 | rv = ipmi_bmc_register(intf, i, sysfs_name); |
50c812b2 | 2943 | |
393d2cc3 | 2944 | out: |
1da177e4 | 2945 | if (rv) { |
393d2cc3 CM |
2946 | if (intf->proc_dir) |
2947 | remove_proc_entries(intf); | |
b2c03941 | 2948 | intf->handlers = NULL; |
bca0324d CM |
2949 | list_del_rcu(&intf->link); |
2950 | mutex_unlock(&ipmi_interfaces_mutex); | |
b2c03941 | 2951 | mutex_unlock(&smi_watchers_mutex); |
bca0324d | 2952 | synchronize_rcu(); |
393d2cc3 | 2953 | kref_put(&intf->refcount, intf_free); |
393d2cc3 | 2954 | } else { |
78ba2faf CM |
2955 | /* |
2956 | * Keep memory order straight for RCU readers. Make | |
2957 | * sure everything else is committed to memory before | |
2958 | * setting intf_num to mark the interface valid. | |
2959 | */ | |
2960 | smp_wmb(); | |
bca0324d CM |
2961 | intf->intf_num = i; |
2962 | mutex_unlock(&ipmi_interfaces_mutex); | |
78ba2faf | 2963 | /* After this point the interface is legal to use. */ |
50c812b2 | 2964 | call_smi_watchers(i, intf->si_dev); |
b2c03941 | 2965 | mutex_unlock(&smi_watchers_mutex); |
1da177e4 LT |
2966 | } |
2967 | ||
2968 | return rv; | |
2969 | } | |
c70d7499 | 2970 | EXPORT_SYMBOL(ipmi_register_smi); |
1da177e4 | 2971 | |
b2c03941 CM |
2972 | static void cleanup_smi_msgs(ipmi_smi_t intf) |
2973 | { | |
2974 | int i; | |
2975 | struct seq_table *ent; | |
2976 | ||
2977 | /* No need for locks, the interface is down. */ | |
2978 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { | |
2979 | ent = &(intf->seq_table[i]); | |
2980 | if (!ent->inuse) | |
2981 | continue; | |
2982 | deliver_err_response(ent->recv_msg, IPMI_ERR_UNSPECIFIED); | |
2983 | } | |
2984 | } | |
2985 | ||
1da177e4 LT |
2986 | int ipmi_unregister_smi(ipmi_smi_t intf) |
2987 | { | |
1da177e4 | 2988 | struct ipmi_smi_watcher *w; |
b2c03941 | 2989 | int intf_num = intf->intf_num; |
1da177e4 | 2990 | |
50c812b2 CM |
2991 | ipmi_bmc_unregister(intf); |
2992 | ||
b2c03941 | 2993 | mutex_lock(&smi_watchers_mutex); |
bca0324d | 2994 | mutex_lock(&ipmi_interfaces_mutex); |
b2c03941 CM |
2995 | intf->intf_num = -1; |
2996 | intf->handlers = NULL; | |
bca0324d CM |
2997 | list_del_rcu(&intf->link); |
2998 | mutex_unlock(&ipmi_interfaces_mutex); | |
2999 | synchronize_rcu(); | |
1da177e4 | 3000 | |
b2c03941 CM |
3001 | cleanup_smi_msgs(intf); |
3002 | ||
393d2cc3 | 3003 | remove_proc_entries(intf); |
1da177e4 | 3004 | |
c70d7499 CM |
3005 | /* |
3006 | * Call all the watcher interfaces to tell them that | |
3007 | * an interface is gone. | |
3008 | */ | |
393d2cc3 | 3009 | list_for_each_entry(w, &smi_watchers, link) |
b2c03941 CM |
3010 | w->smi_gone(intf_num); |
3011 | mutex_unlock(&smi_watchers_mutex); | |
393d2cc3 | 3012 | |
393d2cc3 | 3013 | kref_put(&intf->refcount, intf_free); |
1da177e4 LT |
3014 | return 0; |
3015 | } | |
c70d7499 | 3016 | EXPORT_SYMBOL(ipmi_unregister_smi); |
1da177e4 LT |
3017 | |
3018 | static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf, | |
3019 | struct ipmi_smi_msg *msg) | |
3020 | { | |
3021 | struct ipmi_ipmb_addr ipmb_addr; | |
3022 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 | 3023 | |
c70d7499 CM |
3024 | /* |
3025 | * This is 11, not 10, because the response must contain a | |
3026 | * completion code. | |
3027 | */ | |
1da177e4 LT |
3028 | if (msg->rsp_size < 11) { |
3029 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3030 | ipmi_inc_stat(intf, invalid_ipmb_responses); |
1da177e4 LT |
3031 | return 0; |
3032 | } | |
3033 | ||
3034 | if (msg->rsp[2] != 0) { | |
3035 | /* An error getting the response, just ignore it. */ | |
3036 | return 0; | |
3037 | } | |
3038 | ||
3039 | ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; | |
3040 | ipmb_addr.slave_addr = msg->rsp[6]; | |
3041 | ipmb_addr.channel = msg->rsp[3] & 0x0f; | |
3042 | ipmb_addr.lun = msg->rsp[7] & 3; | |
3043 | ||
c70d7499 CM |
3044 | /* |
3045 | * It's a response from a remote entity. Look up the sequence | |
3046 | * number and handle the response. | |
3047 | */ | |
1da177e4 LT |
3048 | if (intf_find_seq(intf, |
3049 | msg->rsp[7] >> 2, | |
3050 | msg->rsp[3] & 0x0f, | |
3051 | msg->rsp[8], | |
3052 | (msg->rsp[4] >> 2) & (~1), | |
3053 | (struct ipmi_addr *) &(ipmb_addr), | |
c70d7499 CM |
3054 | &recv_msg)) { |
3055 | /* | |
3056 | * We were unable to find the sequence number, | |
3057 | * so just nuke the message. | |
3058 | */ | |
b2655f26 | 3059 | ipmi_inc_stat(intf, unhandled_ipmb_responses); |
1da177e4 LT |
3060 | return 0; |
3061 | } | |
3062 | ||
3063 | memcpy(recv_msg->msg_data, | |
3064 | &(msg->rsp[9]), | |
3065 | msg->rsp_size - 9); | |
c70d7499 CM |
3066 | /* |
3067 | * The other fields matched, so no need to set them, except | |
3068 | * for netfn, which needs to be the response that was | |
3069 | * returned, not the request value. | |
3070 | */ | |
1da177e4 LT |
3071 | recv_msg->msg.netfn = msg->rsp[4] >> 2; |
3072 | recv_msg->msg.data = recv_msg->msg_data; | |
3073 | recv_msg->msg.data_len = msg->rsp_size - 10; | |
3074 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
b2655f26 | 3075 | ipmi_inc_stat(intf, handled_ipmb_responses); |
1da177e4 LT |
3076 | deliver_response(recv_msg); |
3077 | ||
3078 | return 0; | |
3079 | } | |
3080 | ||
3081 | static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, | |
3082 | struct ipmi_smi_msg *msg) | |
3083 | { | |
393d2cc3 CM |
3084 | struct cmd_rcvr *rcvr; |
3085 | int rv = 0; | |
3086 | unsigned char netfn; | |
3087 | unsigned char cmd; | |
c69c3127 | 3088 | unsigned char chan; |
393d2cc3 CM |
3089 | ipmi_user_t user = NULL; |
3090 | struct ipmi_ipmb_addr *ipmb_addr; | |
3091 | struct ipmi_recv_msg *recv_msg; | |
b2c03941 | 3092 | struct ipmi_smi_handlers *handlers; |
1da177e4 LT |
3093 | |
3094 | if (msg->rsp_size < 10) { | |
3095 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3096 | ipmi_inc_stat(intf, invalid_commands); |
1da177e4 LT |
3097 | return 0; |
3098 | } | |
3099 | ||
3100 | if (msg->rsp[2] != 0) { | |
3101 | /* An error getting the response, just ignore it. */ | |
3102 | return 0; | |
3103 | } | |
3104 | ||
3105 | netfn = msg->rsp[4] >> 2; | |
3106 | cmd = msg->rsp[8]; | |
c69c3127 | 3107 | chan = msg->rsp[3] & 0xf; |
1da177e4 | 3108 | |
e61fb5b6 | 3109 | rcu_read_lock(); |
c69c3127 | 3110 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
393d2cc3 CM |
3111 | if (rcvr) { |
3112 | user = rcvr->user; | |
3113 | kref_get(&user->refcount); | |
3114 | } else | |
3115 | user = NULL; | |
e61fb5b6 | 3116 | rcu_read_unlock(); |
1da177e4 LT |
3117 | |
3118 | if (user == NULL) { | |
3119 | /* We didn't find a user, deliver an error response. */ | |
b2655f26 | 3120 | ipmi_inc_stat(intf, unhandled_commands); |
1da177e4 LT |
3121 | |
3122 | msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
3123 | msg->data[1] = IPMI_SEND_MSG_CMD; | |
3124 | msg->data[2] = msg->rsp[3]; | |
3125 | msg->data[3] = msg->rsp[6]; | |
c70d7499 | 3126 | msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); |
1da177e4 | 3127 | msg->data[5] = ipmb_checksum(&(msg->data[3]), 2); |
c14979b9 | 3128 | msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address; |
c70d7499 CM |
3129 | /* rqseq/lun */ |
3130 | msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); | |
1da177e4 LT |
3131 | msg->data[8] = msg->rsp[8]; /* cmd */ |
3132 | msg->data[9] = IPMI_INVALID_CMD_COMPLETION_CODE; | |
3133 | msg->data[10] = ipmb_checksum(&(msg->data[6]), 4); | |
3134 | msg->data_size = 11; | |
3135 | ||
3136 | #ifdef DEBUG_MSGING | |
3137 | { | |
3138 | int m; | |
3139 | printk("Invalid command:"); | |
e8b33617 | 3140 | for (m = 0; m < msg->data_size; m++) |
1da177e4 LT |
3141 | printk(" %2.2x", msg->data[m]); |
3142 | printk("\n"); | |
3143 | } | |
3144 | #endif | |
b2c03941 CM |
3145 | rcu_read_lock(); |
3146 | handlers = intf->handlers; | |
3147 | if (handlers) { | |
3148 | handlers->sender(intf->send_info, msg, 0); | |
c70d7499 CM |
3149 | /* |
3150 | * We used the message, so return the value | |
3151 | * that causes it to not be freed or | |
3152 | * queued. | |
3153 | */ | |
b2c03941 CM |
3154 | rv = -1; |
3155 | } | |
3156 | rcu_read_unlock(); | |
1da177e4 LT |
3157 | } else { |
3158 | /* Deliver the message to the user. */ | |
b2655f26 | 3159 | ipmi_inc_stat(intf, handled_commands); |
1da177e4 LT |
3160 | |
3161 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3162 | if (!recv_msg) { |
c70d7499 CM |
3163 | /* |
3164 | * We couldn't allocate memory for the | |
3165 | * message, so requeue it for handling | |
3166 | * later. | |
3167 | */ | |
1da177e4 | 3168 | rv = 1; |
393d2cc3 | 3169 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
3170 | } else { |
3171 | /* Extract the source address from the data. */ | |
3172 | ipmb_addr = (struct ipmi_ipmb_addr *) &recv_msg->addr; | |
3173 | ipmb_addr->addr_type = IPMI_IPMB_ADDR_TYPE; | |
3174 | ipmb_addr->slave_addr = msg->rsp[6]; | |
3175 | ipmb_addr->lun = msg->rsp[7] & 3; | |
3176 | ipmb_addr->channel = msg->rsp[3] & 0xf; | |
3177 | ||
c70d7499 CM |
3178 | /* |
3179 | * Extract the rest of the message information | |
3180 | * from the IPMB header. | |
3181 | */ | |
1da177e4 LT |
3182 | recv_msg->user = user; |
3183 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
3184 | recv_msg->msgid = msg->rsp[7] >> 2; | |
3185 | recv_msg->msg.netfn = msg->rsp[4] >> 2; | |
3186 | recv_msg->msg.cmd = msg->rsp[8]; | |
3187 | recv_msg->msg.data = recv_msg->msg_data; | |
3188 | ||
c70d7499 CM |
3189 | /* |
3190 | * We chop off 10, not 9 bytes because the checksum | |
3191 | * at the end also needs to be removed. | |
3192 | */ | |
1da177e4 LT |
3193 | recv_msg->msg.data_len = msg->rsp_size - 10; |
3194 | memcpy(recv_msg->msg_data, | |
3195 | &(msg->rsp[9]), | |
3196 | msg->rsp_size - 10); | |
3197 | deliver_response(recv_msg); | |
3198 | } | |
3199 | } | |
3200 | ||
3201 | return rv; | |
3202 | } | |
3203 | ||
3204 | static int handle_lan_get_msg_rsp(ipmi_smi_t intf, | |
3205 | struct ipmi_smi_msg *msg) | |
3206 | { | |
3207 | struct ipmi_lan_addr lan_addr; | |
3208 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 LT |
3209 | |
3210 | ||
c70d7499 CM |
3211 | /* |
3212 | * This is 13, not 12, because the response must contain a | |
3213 | * completion code. | |
3214 | */ | |
1da177e4 LT |
3215 | if (msg->rsp_size < 13) { |
3216 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3217 | ipmi_inc_stat(intf, invalid_lan_responses); |
1da177e4 LT |
3218 | return 0; |
3219 | } | |
3220 | ||
3221 | if (msg->rsp[2] != 0) { | |
3222 | /* An error getting the response, just ignore it. */ | |
3223 | return 0; | |
3224 | } | |
3225 | ||
3226 | lan_addr.addr_type = IPMI_LAN_ADDR_TYPE; | |
3227 | lan_addr.session_handle = msg->rsp[4]; | |
3228 | lan_addr.remote_SWID = msg->rsp[8]; | |
3229 | lan_addr.local_SWID = msg->rsp[5]; | |
3230 | lan_addr.channel = msg->rsp[3] & 0x0f; | |
3231 | lan_addr.privilege = msg->rsp[3] >> 4; | |
3232 | lan_addr.lun = msg->rsp[9] & 3; | |
3233 | ||
c70d7499 CM |
3234 | /* |
3235 | * It's a response from a remote entity. Look up the sequence | |
3236 | * number and handle the response. | |
3237 | */ | |
1da177e4 LT |
3238 | if (intf_find_seq(intf, |
3239 | msg->rsp[9] >> 2, | |
3240 | msg->rsp[3] & 0x0f, | |
3241 | msg->rsp[10], | |
3242 | (msg->rsp[6] >> 2) & (~1), | |
3243 | (struct ipmi_addr *) &(lan_addr), | |
c70d7499 CM |
3244 | &recv_msg)) { |
3245 | /* | |
3246 | * We were unable to find the sequence number, | |
3247 | * so just nuke the message. | |
3248 | */ | |
b2655f26 | 3249 | ipmi_inc_stat(intf, unhandled_lan_responses); |
1da177e4 LT |
3250 | return 0; |
3251 | } | |
3252 | ||
3253 | memcpy(recv_msg->msg_data, | |
3254 | &(msg->rsp[11]), | |
3255 | msg->rsp_size - 11); | |
c70d7499 CM |
3256 | /* |
3257 | * The other fields matched, so no need to set them, except | |
3258 | * for netfn, which needs to be the response that was | |
3259 | * returned, not the request value. | |
3260 | */ | |
1da177e4 LT |
3261 | recv_msg->msg.netfn = msg->rsp[6] >> 2; |
3262 | recv_msg->msg.data = recv_msg->msg_data; | |
3263 | recv_msg->msg.data_len = msg->rsp_size - 12; | |
3264 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
b2655f26 | 3265 | ipmi_inc_stat(intf, handled_lan_responses); |
1da177e4 LT |
3266 | deliver_response(recv_msg); |
3267 | ||
3268 | return 0; | |
3269 | } | |
3270 | ||
3271 | static int handle_lan_get_msg_cmd(ipmi_smi_t intf, | |
3272 | struct ipmi_smi_msg *msg) | |
3273 | { | |
393d2cc3 CM |
3274 | struct cmd_rcvr *rcvr; |
3275 | int rv = 0; | |
3276 | unsigned char netfn; | |
3277 | unsigned char cmd; | |
c69c3127 | 3278 | unsigned char chan; |
393d2cc3 CM |
3279 | ipmi_user_t user = NULL; |
3280 | struct ipmi_lan_addr *lan_addr; | |
3281 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 LT |
3282 | |
3283 | if (msg->rsp_size < 12) { | |
3284 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3285 | ipmi_inc_stat(intf, invalid_commands); |
1da177e4 LT |
3286 | return 0; |
3287 | } | |
3288 | ||
3289 | if (msg->rsp[2] != 0) { | |
3290 | /* An error getting the response, just ignore it. */ | |
3291 | return 0; | |
3292 | } | |
3293 | ||
3294 | netfn = msg->rsp[6] >> 2; | |
3295 | cmd = msg->rsp[10]; | |
c69c3127 | 3296 | chan = msg->rsp[3] & 0xf; |
1da177e4 | 3297 | |
e61fb5b6 | 3298 | rcu_read_lock(); |
c69c3127 | 3299 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
393d2cc3 CM |
3300 | if (rcvr) { |
3301 | user = rcvr->user; | |
3302 | kref_get(&user->refcount); | |
3303 | } else | |
3304 | user = NULL; | |
e61fb5b6 | 3305 | rcu_read_unlock(); |
1da177e4 LT |
3306 | |
3307 | if (user == NULL) { | |
393d2cc3 | 3308 | /* We didn't find a user, just give up. */ |
b2655f26 | 3309 | ipmi_inc_stat(intf, unhandled_commands); |
1da177e4 | 3310 | |
c70d7499 CM |
3311 | /* |
3312 | * Don't do anything with these messages, just allow | |
3313 | * them to be freed. | |
3314 | */ | |
3315 | rv = 0; | |
1da177e4 LT |
3316 | } else { |
3317 | /* Deliver the message to the user. */ | |
b2655f26 | 3318 | ipmi_inc_stat(intf, handled_commands); |
1da177e4 LT |
3319 | |
3320 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3321 | if (!recv_msg) { |
c70d7499 CM |
3322 | /* |
3323 | * We couldn't allocate memory for the | |
3324 | * message, so requeue it for handling later. | |
3325 | */ | |
1da177e4 | 3326 | rv = 1; |
393d2cc3 | 3327 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
3328 | } else { |
3329 | /* Extract the source address from the data. */ | |
3330 | lan_addr = (struct ipmi_lan_addr *) &recv_msg->addr; | |
3331 | lan_addr->addr_type = IPMI_LAN_ADDR_TYPE; | |
3332 | lan_addr->session_handle = msg->rsp[4]; | |
3333 | lan_addr->remote_SWID = msg->rsp[8]; | |
3334 | lan_addr->local_SWID = msg->rsp[5]; | |
3335 | lan_addr->lun = msg->rsp[9] & 3; | |
3336 | lan_addr->channel = msg->rsp[3] & 0xf; | |
3337 | lan_addr->privilege = msg->rsp[3] >> 4; | |
3338 | ||
c70d7499 CM |
3339 | /* |
3340 | * Extract the rest of the message information | |
3341 | * from the IPMB header. | |
3342 | */ | |
1da177e4 LT |
3343 | recv_msg->user = user; |
3344 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
3345 | recv_msg->msgid = msg->rsp[9] >> 2; | |
3346 | recv_msg->msg.netfn = msg->rsp[6] >> 2; | |
3347 | recv_msg->msg.cmd = msg->rsp[10]; | |
3348 | recv_msg->msg.data = recv_msg->msg_data; | |
3349 | ||
c70d7499 CM |
3350 | /* |
3351 | * We chop off 12, not 11 bytes because the checksum | |
3352 | * at the end also needs to be removed. | |
3353 | */ | |
1da177e4 LT |
3354 | recv_msg->msg.data_len = msg->rsp_size - 12; |
3355 | memcpy(recv_msg->msg_data, | |
3356 | &(msg->rsp[11]), | |
3357 | msg->rsp_size - 12); | |
3358 | deliver_response(recv_msg); | |
3359 | } | |
3360 | } | |
3361 | ||
3362 | return rv; | |
3363 | } | |
3364 | ||
4dec302f | 3365 | /* |
3366 | * This routine will handle "Get Message" command responses with | |
3367 | * channels that use an OEM Medium. The message format belongs to | |
3368 | * the OEM. See IPMI 2.0 specification, Chapter 6 and | |
3369 | * Chapter 22, sections 22.6 and 22.24 for more details. | |
3370 | */ | |
3371 | static int handle_oem_get_msg_cmd(ipmi_smi_t intf, | |
3372 | struct ipmi_smi_msg *msg) | |
3373 | { | |
3374 | struct cmd_rcvr *rcvr; | |
3375 | int rv = 0; | |
3376 | unsigned char netfn; | |
3377 | unsigned char cmd; | |
3378 | unsigned char chan; | |
3379 | ipmi_user_t user = NULL; | |
3380 | struct ipmi_system_interface_addr *smi_addr; | |
3381 | struct ipmi_recv_msg *recv_msg; | |
3382 | ||
3383 | /* | |
3384 | * We expect the OEM SW to perform error checking | |
3385 | * so we just do some basic sanity checks | |
3386 | */ | |
3387 | if (msg->rsp_size < 4) { | |
3388 | /* Message not big enough, just ignore it. */ | |
3389 | ipmi_inc_stat(intf, invalid_commands); | |
3390 | return 0; | |
3391 | } | |
3392 | ||
3393 | if (msg->rsp[2] != 0) { | |
3394 | /* An error getting the response, just ignore it. */ | |
3395 | return 0; | |
3396 | } | |
3397 | ||
3398 | /* | |
3399 | * This is an OEM Message so the OEM needs to know how | |
3400 | * handle the message. We do no interpretation. | |
3401 | */ | |
3402 | netfn = msg->rsp[0] >> 2; | |
3403 | cmd = msg->rsp[1]; | |
3404 | chan = msg->rsp[3] & 0xf; | |
3405 | ||
3406 | rcu_read_lock(); | |
3407 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); | |
3408 | if (rcvr) { | |
3409 | user = rcvr->user; | |
3410 | kref_get(&user->refcount); | |
3411 | } else | |
3412 | user = NULL; | |
3413 | rcu_read_unlock(); | |
3414 | ||
3415 | if (user == NULL) { | |
3416 | /* We didn't find a user, just give up. */ | |
3417 | ipmi_inc_stat(intf, unhandled_commands); | |
3418 | ||
3419 | /* | |
3420 | * Don't do anything with these messages, just allow | |
3421 | * them to be freed. | |
3422 | */ | |
3423 | ||
3424 | rv = 0; | |
3425 | } else { | |
3426 | /* Deliver the message to the user. */ | |
3427 | ipmi_inc_stat(intf, handled_commands); | |
3428 | ||
3429 | recv_msg = ipmi_alloc_recv_msg(); | |
3430 | if (!recv_msg) { | |
3431 | /* | |
3432 | * We couldn't allocate memory for the | |
3433 | * message, so requeue it for handling | |
3434 | * later. | |
3435 | */ | |
3436 | rv = 1; | |
3437 | kref_put(&user->refcount, free_user); | |
3438 | } else { | |
3439 | /* | |
3440 | * OEM Messages are expected to be delivered via | |
3441 | * the system interface to SMS software. We might | |
3442 | * need to visit this again depending on OEM | |
3443 | * requirements | |
3444 | */ | |
3445 | smi_addr = ((struct ipmi_system_interface_addr *) | |
3446 | &(recv_msg->addr)); | |
3447 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3448 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3449 | smi_addr->lun = msg->rsp[0] & 3; | |
3450 | ||
3451 | recv_msg->user = user; | |
3452 | recv_msg->user_msg_data = NULL; | |
3453 | recv_msg->recv_type = IPMI_OEM_RECV_TYPE; | |
3454 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3455 | recv_msg->msg.cmd = msg->rsp[1]; | |
3456 | recv_msg->msg.data = recv_msg->msg_data; | |
3457 | ||
3458 | /* | |
3459 | * The message starts at byte 4 which follows the | |
3460 | * the Channel Byte in the "GET MESSAGE" command | |
3461 | */ | |
3462 | recv_msg->msg.data_len = msg->rsp_size - 4; | |
3463 | memcpy(recv_msg->msg_data, | |
3464 | &(msg->rsp[4]), | |
3465 | msg->rsp_size - 4); | |
3466 | deliver_response(recv_msg); | |
3467 | } | |
3468 | } | |
3469 | ||
3470 | return rv; | |
3471 | } | |
3472 | ||
1da177e4 LT |
3473 | static void copy_event_into_recv_msg(struct ipmi_recv_msg *recv_msg, |
3474 | struct ipmi_smi_msg *msg) | |
3475 | { | |
3476 | struct ipmi_system_interface_addr *smi_addr; | |
c70d7499 | 3477 | |
1da177e4 LT |
3478 | recv_msg->msgid = 0; |
3479 | smi_addr = (struct ipmi_system_interface_addr *) &(recv_msg->addr); | |
3480 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3481 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3482 | smi_addr->lun = msg->rsp[0] & 3; | |
3483 | recv_msg->recv_type = IPMI_ASYNC_EVENT_RECV_TYPE; | |
3484 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3485 | recv_msg->msg.cmd = msg->rsp[1]; | |
3486 | memcpy(recv_msg->msg_data, &(msg->rsp[3]), msg->rsp_size - 3); | |
3487 | recv_msg->msg.data = recv_msg->msg_data; | |
3488 | recv_msg->msg.data_len = msg->rsp_size - 3; | |
3489 | } | |
3490 | ||
1da177e4 LT |
3491 | static int handle_read_event_rsp(ipmi_smi_t intf, |
3492 | struct ipmi_smi_msg *msg) | |
3493 | { | |
3494 | struct ipmi_recv_msg *recv_msg, *recv_msg2; | |
3495 | struct list_head msgs; | |
3496 | ipmi_user_t user; | |
3497 | int rv = 0; | |
3498 | int deliver_count = 0; | |
3499 | unsigned long flags; | |
3500 | ||
3501 | if (msg->rsp_size < 19) { | |
3502 | /* Message is too small to be an IPMB event. */ | |
b2655f26 | 3503 | ipmi_inc_stat(intf, invalid_events); |
1da177e4 LT |
3504 | return 0; |
3505 | } | |
3506 | ||
3507 | if (msg->rsp[2] != 0) { | |
3508 | /* An error getting the event, just ignore it. */ | |
3509 | return 0; | |
3510 | } | |
3511 | ||
3512 | INIT_LIST_HEAD(&msgs); | |
3513 | ||
393d2cc3 | 3514 | spin_lock_irqsave(&intf->events_lock, flags); |
1da177e4 | 3515 | |
b2655f26 | 3516 | ipmi_inc_stat(intf, events); |
1da177e4 | 3517 | |
c70d7499 CM |
3518 | /* |
3519 | * Allocate and fill in one message for every user that is | |
3520 | * getting events. | |
3521 | */ | |
393d2cc3 CM |
3522 | rcu_read_lock(); |
3523 | list_for_each_entry_rcu(user, &intf->users, link) { | |
8a3628d5 | 3524 | if (!user->gets_events) |
1da177e4 LT |
3525 | continue; |
3526 | ||
3527 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3528 | if (!recv_msg) { |
393d2cc3 | 3529 | rcu_read_unlock(); |
8a3628d5 CM |
3530 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, |
3531 | link) { | |
1da177e4 LT |
3532 | list_del(&recv_msg->link); |
3533 | ipmi_free_recv_msg(recv_msg); | |
3534 | } | |
c70d7499 CM |
3535 | /* |
3536 | * We couldn't allocate memory for the | |
3537 | * message, so requeue it for handling | |
3538 | * later. | |
3539 | */ | |
1da177e4 LT |
3540 | rv = 1; |
3541 | goto out; | |
3542 | } | |
3543 | ||
3544 | deliver_count++; | |
3545 | ||
3546 | copy_event_into_recv_msg(recv_msg, msg); | |
3547 | recv_msg->user = user; | |
393d2cc3 | 3548 | kref_get(&user->refcount); |
1da177e4 LT |
3549 | list_add_tail(&(recv_msg->link), &msgs); |
3550 | } | |
393d2cc3 | 3551 | rcu_read_unlock(); |
1da177e4 LT |
3552 | |
3553 | if (deliver_count) { | |
3554 | /* Now deliver all the messages. */ | |
3555 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, link) { | |
3556 | list_del(&recv_msg->link); | |
3557 | deliver_response(recv_msg); | |
3558 | } | |
3559 | } else if (intf->waiting_events_count < MAX_EVENTS_IN_QUEUE) { | |
c70d7499 CM |
3560 | /* |
3561 | * No one to receive the message, put it in queue if there's | |
3562 | * not already too many things in the queue. | |
3563 | */ | |
1da177e4 | 3564 | recv_msg = ipmi_alloc_recv_msg(); |
8a3628d5 | 3565 | if (!recv_msg) { |
c70d7499 CM |
3566 | /* |
3567 | * We couldn't allocate memory for the | |
3568 | * message, so requeue it for handling | |
3569 | * later. | |
3570 | */ | |
1da177e4 LT |
3571 | rv = 1; |
3572 | goto out; | |
3573 | } | |
3574 | ||
3575 | copy_event_into_recv_msg(recv_msg, msg); | |
3576 | list_add_tail(&(recv_msg->link), &(intf->waiting_events)); | |
4791c03d | 3577 | intf->waiting_events_count++; |
87ebd06f | 3578 | } else if (!intf->event_msg_printed) { |
c70d7499 CM |
3579 | /* |
3580 | * There's too many things in the queue, discard this | |
3581 | * message. | |
3582 | */ | |
87ebd06f CM |
3583 | printk(KERN_WARNING PFX "Event queue full, discarding" |
3584 | " incoming events\n"); | |
3585 | intf->event_msg_printed = 1; | |
1da177e4 LT |
3586 | } |
3587 | ||
3588 | out: | |
3589 | spin_unlock_irqrestore(&(intf->events_lock), flags); | |
3590 | ||
3591 | return rv; | |
3592 | } | |
3593 | ||
3594 | static int handle_bmc_rsp(ipmi_smi_t intf, | |
3595 | struct ipmi_smi_msg *msg) | |
3596 | { | |
3597 | struct ipmi_recv_msg *recv_msg; | |
393d2cc3 | 3598 | struct ipmi_user *user; |
1da177e4 LT |
3599 | |
3600 | recv_msg = (struct ipmi_recv_msg *) msg->user_data; | |
c70d7499 CM |
3601 | if (recv_msg == NULL) { |
3602 | printk(KERN_WARNING | |
3603 | "IPMI message received with no owner. This\n" | |
3604 | "could be because of a malformed message, or\n" | |
3605 | "because of a hardware error. Contact your\n" | |
3606 | "hardware vender for assistance\n"); | |
56a55ec6 CM |
3607 | return 0; |
3608 | } | |
1da177e4 | 3609 | |
393d2cc3 | 3610 | user = recv_msg->user; |
1da177e4 | 3611 | /* Make sure the user still exists. */ |
393d2cc3 | 3612 | if (user && !user->valid) { |
56a55ec6 | 3613 | /* The user for the message went away, so give up. */ |
b2655f26 | 3614 | ipmi_inc_stat(intf, unhandled_local_responses); |
1da177e4 LT |
3615 | ipmi_free_recv_msg(recv_msg); |
3616 | } else { | |
3617 | struct ipmi_system_interface_addr *smi_addr; | |
3618 | ||
b2655f26 | 3619 | ipmi_inc_stat(intf, handled_local_responses); |
1da177e4 LT |
3620 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
3621 | recv_msg->msgid = msg->msgid; | |
3622 | smi_addr = ((struct ipmi_system_interface_addr *) | |
3623 | &(recv_msg->addr)); | |
3624 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3625 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3626 | smi_addr->lun = msg->rsp[0] & 3; | |
3627 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3628 | recv_msg->msg.cmd = msg->rsp[1]; | |
3629 | memcpy(recv_msg->msg_data, | |
3630 | &(msg->rsp[2]), | |
3631 | msg->rsp_size - 2); | |
3632 | recv_msg->msg.data = recv_msg->msg_data; | |
3633 | recv_msg->msg.data_len = msg->rsp_size - 2; | |
3634 | deliver_response(recv_msg); | |
3635 | } | |
3636 | ||
3637 | return 0; | |
3638 | } | |
3639 | ||
c70d7499 | 3640 | /* |
7adf579c | 3641 | * Handle a received message. Return 1 if the message should be requeued, |
c70d7499 CM |
3642 | * 0 if the message should be freed, or -1 if the message should not |
3643 | * be freed or requeued. | |
3644 | */ | |
7adf579c | 3645 | static int handle_one_recv_msg(ipmi_smi_t intf, |
1da177e4 LT |
3646 | struct ipmi_smi_msg *msg) |
3647 | { | |
3648 | int requeue; | |
3649 | int chan; | |
3650 | ||
3651 | #ifdef DEBUG_MSGING | |
3652 | int m; | |
3653 | printk("Recv:"); | |
e8b33617 | 3654 | for (m = 0; m < msg->rsp_size; m++) |
1da177e4 LT |
3655 | printk(" %2.2x", msg->rsp[m]); |
3656 | printk("\n"); | |
3657 | #endif | |
3658 | if (msg->rsp_size < 2) { | |
3659 | /* Message is too small to be correct. */ | |
3660 | printk(KERN_WARNING PFX "BMC returned to small a message" | |
3661 | " for netfn %x cmd %x, got %d bytes\n", | |
3662 | (msg->data[0] >> 2) | 1, msg->data[1], msg->rsp_size); | |
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; | |
c70d7499 CM |
3669 | } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1)) |
3670 | || (msg->rsp[1] != msg->data[1])) { | |
3671 | /* | |
3672 | * The NetFN and Command in the response is not even | |
3673 | * marginally correct. | |
3674 | */ | |
1da177e4 LT |
3675 | printk(KERN_WARNING PFX "BMC returned incorrect response," |
3676 | " expected netfn %x cmd %x, got netfn %x cmd %x\n", | |
3677 | (msg->data[0] >> 2) | 1, msg->data[1], | |
3678 | msg->rsp[0] >> 2, msg->rsp[1]); | |
3679 | ||
3680 | /* Generate an error response for the message. */ | |
3681 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3682 | msg->rsp[1] = msg->data[1]; | |
3683 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3684 | msg->rsp_size = 3; | |
3685 | } | |
3686 | ||
3687 | if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
3688 | && (msg->rsp[1] == IPMI_SEND_MSG_CMD) | |
c70d7499 CM |
3689 | && (msg->user_data != NULL)) { |
3690 | /* | |
3691 | * It's a response to a response we sent. For this we | |
3692 | * deliver a send message response to the user. | |
3693 | */ | |
393d2cc3 | 3694 | struct ipmi_recv_msg *recv_msg = msg->user_data; |
1da177e4 LT |
3695 | |
3696 | requeue = 0; | |
3697 | if (msg->rsp_size < 2) | |
3698 | /* Message is too small to be correct. */ | |
3699 | goto out; | |
3700 | ||
3701 | chan = msg->data[2] & 0x0f; | |
3702 | if (chan >= IPMI_MAX_CHANNELS) | |
3703 | /* Invalid channel number */ | |
3704 | goto out; | |
3705 | ||
393d2cc3 CM |
3706 | if (!recv_msg) |
3707 | goto out; | |
3708 | ||
3709 | /* Make sure the user still exists. */ | |
3710 | if (!recv_msg->user || !recv_msg->user->valid) | |
3711 | goto out; | |
3712 | ||
3713 | recv_msg->recv_type = IPMI_RESPONSE_RESPONSE_TYPE; | |
3714 | recv_msg->msg.data = recv_msg->msg_data; | |
3715 | recv_msg->msg.data_len = 1; | |
3716 | recv_msg->msg_data[0] = msg->rsp[2]; | |
3717 | deliver_response(recv_msg); | |
1da177e4 | 3718 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
c70d7499 | 3719 | && (msg->rsp[1] == IPMI_GET_MSG_CMD)) { |
1da177e4 LT |
3720 | /* It's from the receive queue. */ |
3721 | chan = msg->rsp[3] & 0xf; | |
3722 | if (chan >= IPMI_MAX_CHANNELS) { | |
3723 | /* Invalid channel number */ | |
3724 | requeue = 0; | |
3725 | goto out; | |
3726 | } | |
3727 | ||
4dec302f | 3728 | /* |
9a2845c4 CM |
3729 | * We need to make sure the channels have been initialized. |
3730 | * The channel_handler routine will set the "curr_channel" | |
3731 | * equal to or greater than IPMI_MAX_CHANNELS when all the | |
3732 | * channels for this interface have been initialized. | |
3733 | */ | |
4dec302f | 3734 | if (intf->curr_channel < IPMI_MAX_CHANNELS) { |
9a2845c4 | 3735 | requeue = 0; /* Throw the message away */ |
4dec302f | 3736 | goto out; |
3737 | } | |
3738 | ||
1da177e4 LT |
3739 | switch (intf->channels[chan].medium) { |
3740 | case IPMI_CHANNEL_MEDIUM_IPMB: | |
3741 | if (msg->rsp[4] & 0x04) { | |
c70d7499 CM |
3742 | /* |
3743 | * It's a response, so find the | |
3744 | * requesting message and send it up. | |
3745 | */ | |
1da177e4 LT |
3746 | requeue = handle_ipmb_get_msg_rsp(intf, msg); |
3747 | } else { | |
c70d7499 CM |
3748 | /* |
3749 | * It's a command to the SMS from some other | |
3750 | * entity. Handle that. | |
3751 | */ | |
1da177e4 LT |
3752 | requeue = handle_ipmb_get_msg_cmd(intf, msg); |
3753 | } | |
3754 | break; | |
3755 | ||
3756 | case IPMI_CHANNEL_MEDIUM_8023LAN: | |
3757 | case IPMI_CHANNEL_MEDIUM_ASYNC: | |
3758 | if (msg->rsp[6] & 0x04) { | |
c70d7499 CM |
3759 | /* |
3760 | * It's a response, so find the | |
3761 | * requesting message and send it up. | |
3762 | */ | |
1da177e4 LT |
3763 | requeue = handle_lan_get_msg_rsp(intf, msg); |
3764 | } else { | |
c70d7499 CM |
3765 | /* |
3766 | * It's a command to the SMS from some other | |
3767 | * entity. Handle that. | |
3768 | */ | |
1da177e4 LT |
3769 | requeue = handle_lan_get_msg_cmd(intf, msg); |
3770 | } | |
3771 | break; | |
3772 | ||
3773 | default: | |
4dec302f | 3774 | /* Check for OEM Channels. Clients had better |
3775 | register for these commands. */ | |
3776 | if ((intf->channels[chan].medium | |
3777 | >= IPMI_CHANNEL_MEDIUM_OEM_MIN) | |
3778 | && (intf->channels[chan].medium | |
3779 | <= IPMI_CHANNEL_MEDIUM_OEM_MAX)) { | |
3780 | requeue = handle_oem_get_msg_cmd(intf, msg); | |
3781 | } else { | |
3782 | /* | |
3783 | * We don't handle the channel type, so just | |
3784 | * free the message. | |
3785 | */ | |
3786 | requeue = 0; | |
3787 | } | |
1da177e4 LT |
3788 | } |
3789 | ||
3790 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
c70d7499 | 3791 | && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD)) { |
b3834be5 | 3792 | /* It's an asynchronous event. */ |
1da177e4 LT |
3793 | requeue = handle_read_event_rsp(intf, msg); |
3794 | } else { | |
3795 | /* It's a response from the local BMC. */ | |
3796 | requeue = handle_bmc_rsp(intf, msg); | |
3797 | } | |
3798 | ||
3799 | out: | |
3800 | return requeue; | |
3801 | } | |
3802 | ||
7adf579c CM |
3803 | /* |
3804 | * If there are messages in the queue or pretimeouts, handle them. | |
3805 | */ | |
3806 | static void handle_new_recv_msgs(ipmi_smi_t intf) | |
3807 | { | |
3808 | struct ipmi_smi_msg *smi_msg; | |
3809 | unsigned long flags = 0; | |
3810 | int rv; | |
3811 | int run_to_completion = intf->run_to_completion; | |
3812 | ||
3813 | /* See if any waiting messages need to be processed. */ | |
3814 | if (!run_to_completion) | |
3815 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); | |
3816 | while (!list_empty(&intf->waiting_msgs)) { | |
3817 | smi_msg = list_entry(intf->waiting_msgs.next, | |
3818 | struct ipmi_smi_msg, link); | |
3819 | list_del(&smi_msg->link); | |
3820 | if (!run_to_completion) | |
3821 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
3822 | rv = handle_one_recv_msg(intf, smi_msg); | |
3823 | if (!run_to_completion) | |
3824 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); | |
3825 | if (rv == 0) { | |
3826 | /* Message handled */ | |
3827 | ipmi_free_smi_msg(smi_msg); | |
3828 | } else if (rv < 0) { | |
3829 | /* Fatal error on the message, del but don't free. */ | |
3830 | } else { | |
3831 | /* | |
3832 | * To preserve message order, quit if we | |
3833 | * can't handle a message. | |
3834 | */ | |
3835 | list_add(&smi_msg->link, &intf->waiting_msgs); | |
3836 | break; | |
3837 | } | |
3838 | } | |
3839 | if (!run_to_completion) | |
3840 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
3841 | ||
3842 | /* | |
3843 | * If the pretimout count is non-zero, decrement one from it and | |
3844 | * deliver pretimeouts to all the users. | |
3845 | */ | |
3846 | if (atomic_add_unless(&intf->watchdog_pretimeouts_to_deliver, -1, 0)) { | |
3847 | ipmi_user_t user; | |
3848 | ||
3849 | rcu_read_lock(); | |
3850 | list_for_each_entry_rcu(user, &intf->users, link) { | |
3851 | if (user->handler->ipmi_watchdog_pretimeout) | |
3852 | user->handler->ipmi_watchdog_pretimeout( | |
3853 | user->handler_data); | |
3854 | } | |
3855 | rcu_read_unlock(); | |
3856 | } | |
3857 | } | |
3858 | ||
3859 | static void smi_recv_tasklet(unsigned long val) | |
3860 | { | |
3861 | handle_new_recv_msgs((ipmi_smi_t) val); | |
3862 | } | |
3863 | ||
1da177e4 LT |
3864 | /* Handle a new message from the lower layer. */ |
3865 | void ipmi_smi_msg_received(ipmi_smi_t intf, | |
3866 | struct ipmi_smi_msg *msg) | |
3867 | { | |
5956dce1 | 3868 | unsigned long flags = 0; /* keep us warning-free. */ |
5956dce1 | 3869 | int run_to_completion; |
1da177e4 LT |
3870 | |
3871 | ||
1da177e4 LT |
3872 | if ((msg->data_size >= 2) |
3873 | && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) | |
3874 | && (msg->data[1] == IPMI_SEND_MSG_CMD) | |
c70d7499 CM |
3875 | && (msg->user_data == NULL)) { |
3876 | /* | |
3877 | * This is the local response to a command send, start | |
3878 | * the timer for these. The user_data will not be | |
3879 | * NULL if this is a response send, and we will let | |
3880 | * response sends just go through. | |
3881 | */ | |
3882 | ||
3883 | /* | |
3884 | * Check for errors, if we get certain errors (ones | |
3885 | * that mean basically we can try again later), we | |
3886 | * ignore them and start the timer. Otherwise we | |
3887 | * report the error immediately. | |
3888 | */ | |
1da177e4 LT |
3889 | if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) |
3890 | && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) | |
46d52b09 CM |
3891 | && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR) |
3892 | && (msg->rsp[2] != IPMI_BUS_ERR) | |
c70d7499 | 3893 | && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) { |
1da177e4 LT |
3894 | int chan = msg->rsp[3] & 0xf; |
3895 | ||
3896 | /* Got an error sending the message, handle it. */ | |
1da177e4 LT |
3897 | if (chan >= IPMI_MAX_CHANNELS) |
3898 | ; /* This shouldn't happen */ | |
3899 | else if ((intf->channels[chan].medium | |
3900 | == IPMI_CHANNEL_MEDIUM_8023LAN) | |
3901 | || (intf->channels[chan].medium | |
3902 | == IPMI_CHANNEL_MEDIUM_ASYNC)) | |
b2655f26 | 3903 | ipmi_inc_stat(intf, sent_lan_command_errs); |
1da177e4 | 3904 | else |
b2655f26 | 3905 | ipmi_inc_stat(intf, sent_ipmb_command_errs); |
1da177e4 | 3906 | intf_err_seq(intf, msg->msgid, msg->rsp[2]); |
c70d7499 | 3907 | } else |
1da177e4 LT |
3908 | /* The message was sent, start the timer. */ |
3909 | intf_start_seq_timer(intf, msg->msgid); | |
1da177e4 LT |
3910 | |
3911 | ipmi_free_smi_msg(msg); | |
393d2cc3 | 3912 | goto out; |
1da177e4 LT |
3913 | } |
3914 | ||
c70d7499 CM |
3915 | /* |
3916 | * To preserve message order, if the list is not empty, we | |
3917 | * tack this message onto the end of the list. | |
3918 | */ | |
5956dce1 KB |
3919 | run_to_completion = intf->run_to_completion; |
3920 | if (!run_to_completion) | |
3921 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); | |
7adf579c | 3922 | list_add_tail(&msg->link, &intf->waiting_msgs); |
5956dce1 KB |
3923 | if (!run_to_completion) |
3924 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
c70d7499 | 3925 | |
7adf579c | 3926 | tasklet_schedule(&intf->recv_tasklet); |
393d2cc3 CM |
3927 | out: |
3928 | return; | |
1da177e4 | 3929 | } |
c70d7499 | 3930 | EXPORT_SYMBOL(ipmi_smi_msg_received); |
1da177e4 LT |
3931 | |
3932 | void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf) | |
3933 | { | |
7adf579c CM |
3934 | atomic_set(&intf->watchdog_pretimeouts_to_deliver, 1); |
3935 | tasklet_schedule(&intf->recv_tasklet); | |
1da177e4 | 3936 | } |
c70d7499 | 3937 | EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); |
1da177e4 | 3938 | |
882fe011 CM |
3939 | static struct ipmi_smi_msg * |
3940 | smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, | |
3941 | unsigned char seq, long seqid) | |
1da177e4 | 3942 | { |
882fe011 | 3943 | struct ipmi_smi_msg *smi_msg = ipmi_alloc_smi_msg(); |
1da177e4 | 3944 | if (!smi_msg) |
c70d7499 CM |
3945 | /* |
3946 | * If we can't allocate the message, then just return, we | |
3947 | * get 4 retries, so this should be ok. | |
3948 | */ | |
882fe011 | 3949 | return NULL; |
1da177e4 LT |
3950 | |
3951 | memcpy(smi_msg->data, recv_msg->msg.data, recv_msg->msg.data_len); | |
3952 | smi_msg->data_size = recv_msg->msg.data_len; | |
3953 | smi_msg->msgid = STORE_SEQ_IN_MSGID(seq, seqid); | |
c70d7499 | 3954 | |
1da177e4 LT |
3955 | #ifdef DEBUG_MSGING |
3956 | { | |
3957 | int m; | |
3958 | printk("Resend: "); | |
e8b33617 | 3959 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
3960 | printk(" %2.2x", smi_msg->data[m]); |
3961 | printk("\n"); | |
3962 | } | |
3963 | #endif | |
882fe011 | 3964 | return smi_msg; |
1da177e4 LT |
3965 | } |
3966 | ||
393d2cc3 CM |
3967 | static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent, |
3968 | struct list_head *timeouts, long timeout_period, | |
3969 | int slot, unsigned long *flags) | |
3970 | { | |
b2c03941 CM |
3971 | struct ipmi_recv_msg *msg; |
3972 | struct ipmi_smi_handlers *handlers; | |
3973 | ||
3974 | if (intf->intf_num == -1) | |
3975 | return; | |
393d2cc3 CM |
3976 | |
3977 | if (!ent->inuse) | |
3978 | return; | |
3979 | ||
3980 | ent->timeout -= timeout_period; | |
3981 | if (ent->timeout > 0) | |
3982 | return; | |
3983 | ||
3984 | if (ent->retries_left == 0) { | |
3985 | /* The message has used all its retries. */ | |
3986 | ent->inuse = 0; | |
3987 | msg = ent->recv_msg; | |
3988 | list_add_tail(&msg->link, timeouts); | |
393d2cc3 | 3989 | if (ent->broadcast) |
b2655f26 | 3990 | ipmi_inc_stat(intf, timed_out_ipmb_broadcasts); |
25176ed6 | 3991 | else if (is_lan_addr(&ent->recv_msg->addr)) |
b2655f26 | 3992 | ipmi_inc_stat(intf, timed_out_lan_commands); |
393d2cc3 | 3993 | else |
b2655f26 | 3994 | ipmi_inc_stat(intf, timed_out_ipmb_commands); |
393d2cc3 CM |
3995 | } else { |
3996 | struct ipmi_smi_msg *smi_msg; | |
3997 | /* More retries, send again. */ | |
3998 | ||
c70d7499 CM |
3999 | /* |
4000 | * Start with the max timer, set to normal timer after | |
4001 | * the message is sent. | |
4002 | */ | |
393d2cc3 CM |
4003 | ent->timeout = MAX_MSG_TIMEOUT; |
4004 | ent->retries_left--; | |
393d2cc3 CM |
4005 | smi_msg = smi_from_recv_msg(intf, ent->recv_msg, slot, |
4006 | ent->seqid); | |
25176ed6 CM |
4007 | if (!smi_msg) { |
4008 | if (is_lan_addr(&ent->recv_msg->addr)) | |
4009 | ipmi_inc_stat(intf, | |
4010 | dropped_rexmit_lan_commands); | |
4011 | else | |
4012 | ipmi_inc_stat(intf, | |
4013 | dropped_rexmit_ipmb_commands); | |
393d2cc3 | 4014 | return; |
25176ed6 | 4015 | } |
393d2cc3 CM |
4016 | |
4017 | spin_unlock_irqrestore(&intf->seq_lock, *flags); | |
b2c03941 | 4018 | |
c70d7499 CM |
4019 | /* |
4020 | * Send the new message. We send with a zero | |
4021 | * priority. It timed out, I doubt time is that | |
4022 | * critical now, and high priority messages are really | |
4023 | * only for messages to the local MC, which don't get | |
4024 | * resent. | |
4025 | */ | |
b2c03941 | 4026 | handlers = intf->handlers; |
25176ed6 CM |
4027 | if (handlers) { |
4028 | if (is_lan_addr(&ent->recv_msg->addr)) | |
4029 | ipmi_inc_stat(intf, | |
4030 | retransmitted_lan_commands); | |
4031 | else | |
4032 | ipmi_inc_stat(intf, | |
4033 | retransmitted_ipmb_commands); | |
4034 | ||
b2c03941 CM |
4035 | intf->handlers->sender(intf->send_info, |
4036 | smi_msg, 0); | |
25176ed6 | 4037 | } else |
b2c03941 CM |
4038 | ipmi_free_smi_msg(smi_msg); |
4039 | ||
393d2cc3 CM |
4040 | spin_lock_irqsave(&intf->seq_lock, *flags); |
4041 | } | |
4042 | } | |
4043 | ||
4044 | static void ipmi_timeout_handler(long timeout_period) | |
1da177e4 LT |
4045 | { |
4046 | ipmi_smi_t intf; | |
4047 | struct list_head timeouts; | |
4048 | struct ipmi_recv_msg *msg, *msg2; | |
1da177e4 | 4049 | unsigned long flags; |
bca0324d | 4050 | int i; |
1da177e4 | 4051 | |
bca0324d CM |
4052 | rcu_read_lock(); |
4053 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
7adf579c | 4054 | tasklet_schedule(&intf->recv_tasklet); |
1da177e4 | 4055 | |
c70d7499 CM |
4056 | /* |
4057 | * Go through the seq table and find any messages that | |
4058 | * have timed out, putting them in the timeouts | |
4059 | * list. | |
4060 | */ | |
41c57a87 | 4061 | INIT_LIST_HEAD(&timeouts); |
393d2cc3 | 4062 | spin_lock_irqsave(&intf->seq_lock, flags); |
bca0324d CM |
4063 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) |
4064 | check_msg_timeout(intf, &(intf->seq_table[i]), | |
4065 | &timeouts, timeout_period, i, | |
393d2cc3 CM |
4066 | &flags); |
4067 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
4068 | ||
4069 | list_for_each_entry_safe(msg, msg2, &timeouts, link) | |
b2c03941 | 4070 | deliver_err_response(msg, IPMI_TIMEOUT_COMPLETION_CODE); |
b9675136 CM |
4071 | |
4072 | /* | |
4073 | * Maintenance mode handling. Check the timeout | |
4074 | * optimistically before we claim the lock. It may | |
4075 | * mean a timeout gets missed occasionally, but that | |
4076 | * only means the timeout gets extended by one period | |
4077 | * in that case. No big deal, and it avoids the lock | |
4078 | * most of the time. | |
4079 | */ | |
4080 | if (intf->auto_maintenance_timeout > 0) { | |
4081 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); | |
4082 | if (intf->auto_maintenance_timeout > 0) { | |
4083 | intf->auto_maintenance_timeout | |
4084 | -= timeout_period; | |
4085 | if (!intf->maintenance_mode | |
c70d7499 | 4086 | && (intf->auto_maintenance_timeout <= 0)) { |
b9675136 CM |
4087 | intf->maintenance_mode_enable = 0; |
4088 | maintenance_mode_update(intf); | |
4089 | } | |
4090 | } | |
4091 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, | |
4092 | flags); | |
4093 | } | |
1da177e4 | 4094 | } |
bca0324d | 4095 | rcu_read_unlock(); |
1da177e4 LT |
4096 | } |
4097 | ||
4098 | static void ipmi_request_event(void) | |
4099 | { | |
b2c03941 CM |
4100 | ipmi_smi_t intf; |
4101 | struct ipmi_smi_handlers *handlers; | |
1da177e4 | 4102 | |
bca0324d | 4103 | rcu_read_lock(); |
c70d7499 CM |
4104 | /* |
4105 | * Called from the timer, no need to check if handlers is | |
4106 | * valid. | |
4107 | */ | |
b2c03941 | 4108 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b9675136 CM |
4109 | /* No event requests when in maintenance mode. */ |
4110 | if (intf->maintenance_mode_enable) | |
4111 | continue; | |
4112 | ||
b2c03941 CM |
4113 | handlers = intf->handlers; |
4114 | if (handlers) | |
4115 | handlers->request_events(intf->send_info); | |
4116 | } | |
bca0324d | 4117 | rcu_read_unlock(); |
1da177e4 LT |
4118 | } |
4119 | ||
4120 | static struct timer_list ipmi_timer; | |
4121 | ||
ddac44b7 CM |
4122 | /* Call every ~1000 ms. */ |
4123 | #define IPMI_TIMEOUT_TIME 1000 | |
1da177e4 LT |
4124 | |
4125 | /* How many jiffies does it take to get to the timeout time. */ | |
4126 | #define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000) | |
4127 | ||
c70d7499 CM |
4128 | /* |
4129 | * Request events from the queue every second (this is the number of | |
4130 | * IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the | |
4131 | * future, IPMI will add a way to know immediately if an event is in | |
4132 | * the queue and this silliness can go away. | |
4133 | */ | |
1da177e4 LT |
4134 | #define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME)) |
4135 | ||
8f43f84f | 4136 | static atomic_t stop_operation; |
1da177e4 LT |
4137 | static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
4138 | ||
4139 | static void ipmi_timeout(unsigned long data) | |
4140 | { | |
8f43f84f | 4141 | if (atomic_read(&stop_operation)) |
1da177e4 | 4142 | return; |
1da177e4 LT |
4143 | |
4144 | ticks_to_req_ev--; | |
4145 | if (ticks_to_req_ev == 0) { | |
4146 | ipmi_request_event(); | |
4147 | ticks_to_req_ev = IPMI_REQUEST_EV_TIME; | |
4148 | } | |
4149 | ||
4150 | ipmi_timeout_handler(IPMI_TIMEOUT_TIME); | |
4151 | ||
8f43f84f | 4152 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); |
1da177e4 LT |
4153 | } |
4154 | ||
4155 | ||
4156 | static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0); | |
4157 | static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0); | |
4158 | ||
4159 | /* FIXME - convert these to slabs. */ | |
4160 | static void free_smi_msg(struct ipmi_smi_msg *msg) | |
4161 | { | |
4162 | atomic_dec(&smi_msg_inuse_count); | |
4163 | kfree(msg); | |
4164 | } | |
4165 | ||
4166 | struct ipmi_smi_msg *ipmi_alloc_smi_msg(void) | |
4167 | { | |
4168 | struct ipmi_smi_msg *rv; | |
4169 | rv = kmalloc(sizeof(struct ipmi_smi_msg), GFP_ATOMIC); | |
4170 | if (rv) { | |
4171 | rv->done = free_smi_msg; | |
4172 | rv->user_data = NULL; | |
4173 | atomic_inc(&smi_msg_inuse_count); | |
4174 | } | |
4175 | return rv; | |
4176 | } | |
c70d7499 | 4177 | EXPORT_SYMBOL(ipmi_alloc_smi_msg); |
1da177e4 LT |
4178 | |
4179 | static void free_recv_msg(struct ipmi_recv_msg *msg) | |
4180 | { | |
4181 | atomic_dec(&recv_msg_inuse_count); | |
4182 | kfree(msg); | |
4183 | } | |
4184 | ||
74006309 | 4185 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void) |
1da177e4 LT |
4186 | { |
4187 | struct ipmi_recv_msg *rv; | |
4188 | ||
4189 | rv = kmalloc(sizeof(struct ipmi_recv_msg), GFP_ATOMIC); | |
4190 | if (rv) { | |
a9eec556 | 4191 | rv->user = NULL; |
1da177e4 LT |
4192 | rv->done = free_recv_msg; |
4193 | atomic_inc(&recv_msg_inuse_count); | |
4194 | } | |
4195 | return rv; | |
4196 | } | |
4197 | ||
393d2cc3 CM |
4198 | void ipmi_free_recv_msg(struct ipmi_recv_msg *msg) |
4199 | { | |
4200 | if (msg->user) | |
4201 | kref_put(&msg->user->refcount, free_user); | |
4202 | msg->done(msg); | |
4203 | } | |
c70d7499 | 4204 | EXPORT_SYMBOL(ipmi_free_recv_msg); |
393d2cc3 | 4205 | |
1da177e4 LT |
4206 | #ifdef CONFIG_IPMI_PANIC_EVENT |
4207 | ||
895dcfd1 CM |
4208 | static atomic_t panic_done_count = ATOMIC_INIT(0); |
4209 | ||
1da177e4 LT |
4210 | static void dummy_smi_done_handler(struct ipmi_smi_msg *msg) |
4211 | { | |
895dcfd1 | 4212 | atomic_dec(&panic_done_count); |
1da177e4 LT |
4213 | } |
4214 | ||
4215 | static void dummy_recv_done_handler(struct ipmi_recv_msg *msg) | |
4216 | { | |
895dcfd1 CM |
4217 | atomic_dec(&panic_done_count); |
4218 | } | |
4219 | ||
4220 | /* | |
4221 | * Inside a panic, send a message and wait for a response. | |
4222 | */ | |
4223 | static void ipmi_panic_request_and_wait(ipmi_smi_t intf, | |
4224 | struct ipmi_addr *addr, | |
4225 | struct kernel_ipmi_msg *msg) | |
4226 | { | |
4227 | struct ipmi_smi_msg smi_msg; | |
4228 | struct ipmi_recv_msg recv_msg; | |
4229 | int rv; | |
4230 | ||
4231 | smi_msg.done = dummy_smi_done_handler; | |
4232 | recv_msg.done = dummy_recv_done_handler; | |
4233 | atomic_add(2, &panic_done_count); | |
4234 | rv = i_ipmi_request(NULL, | |
4235 | intf, | |
4236 | addr, | |
4237 | 0, | |
4238 | msg, | |
4239 | intf, | |
4240 | &smi_msg, | |
4241 | &recv_msg, | |
4242 | 0, | |
4243 | intf->channels[0].address, | |
4244 | intf->channels[0].lun, | |
4245 | 0, 1); /* Don't retry, and don't wait. */ | |
4246 | if (rv) | |
4247 | atomic_sub(2, &panic_done_count); | |
4248 | while (atomic_read(&panic_done_count) != 0) | |
4249 | ipmi_poll(intf); | |
1da177e4 LT |
4250 | } |
4251 | ||
4252 | #ifdef CONFIG_IPMI_PANIC_STRING | |
56a55ec6 | 4253 | static void event_receiver_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 4254 | { |
56a55ec6 CM |
4255 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
4256 | && (msg->msg.netfn == IPMI_NETFN_SENSOR_EVENT_RESPONSE) | |
4257 | && (msg->msg.cmd == IPMI_GET_EVENT_RECEIVER_CMD) | |
c70d7499 | 4258 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { |
1da177e4 | 4259 | /* A get event receiver command, save it. */ |
56a55ec6 CM |
4260 | intf->event_receiver = msg->msg.data[1]; |
4261 | intf->event_receiver_lun = msg->msg.data[2] & 0x3; | |
1da177e4 LT |
4262 | } |
4263 | } | |
4264 | ||
56a55ec6 | 4265 | static void device_id_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 4266 | { |
56a55ec6 CM |
4267 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
4268 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
4269 | && (msg->msg.cmd == IPMI_GET_DEVICE_ID_CMD) | |
c70d7499 CM |
4270 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { |
4271 | /* | |
4272 | * A get device id command, save if we are an event | |
4273 | * receiver or generator. | |
4274 | */ | |
56a55ec6 CM |
4275 | intf->local_sel_device = (msg->msg.data[6] >> 2) & 1; |
4276 | intf->local_event_generator = (msg->msg.data[6] >> 5) & 1; | |
1da177e4 LT |
4277 | } |
4278 | } | |
4279 | #endif | |
4280 | ||
4281 | static void send_panic_events(char *str) | |
4282 | { | |
4283 | struct kernel_ipmi_msg msg; | |
4284 | ipmi_smi_t intf; | |
4285 | unsigned char data[16]; | |
1da177e4 LT |
4286 | struct ipmi_system_interface_addr *si; |
4287 | struct ipmi_addr addr; | |
1da177e4 LT |
4288 | |
4289 | si = (struct ipmi_system_interface_addr *) &addr; | |
4290 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
4291 | si->channel = IPMI_BMC_CHANNEL; | |
4292 | si->lun = 0; | |
4293 | ||
4294 | /* Fill in an event telling that we have failed. */ | |
4295 | msg.netfn = 0x04; /* Sensor or Event. */ | |
4296 | msg.cmd = 2; /* Platform event command. */ | |
4297 | msg.data = data; | |
4298 | msg.data_len = 8; | |
cda315ab | 4299 | data[0] = 0x41; /* Kernel generator ID, IPMI table 5-4 */ |
1da177e4 LT |
4300 | data[1] = 0x03; /* This is for IPMI 1.0. */ |
4301 | data[2] = 0x20; /* OS Critical Stop, IPMI table 36-3 */ | |
4302 | data[4] = 0x6f; /* Sensor specific, IPMI table 36-1 */ | |
4303 | data[5] = 0xa1; /* Runtime stop OEM bytes 2 & 3. */ | |
4304 | ||
c70d7499 CM |
4305 | /* |
4306 | * Put a few breadcrumbs in. Hopefully later we can add more things | |
4307 | * to make the panic events more useful. | |
4308 | */ | |
1da177e4 LT |
4309 | if (str) { |
4310 | data[3] = str[0]; | |
4311 | data[6] = str[1]; | |
4312 | data[7] = str[2]; | |
4313 | } | |
4314 | ||
1da177e4 | 4315 | /* For every registered interface, send the event. */ |
bca0324d | 4316 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b2c03941 CM |
4317 | if (!intf->handlers) |
4318 | /* Interface is not ready. */ | |
1da177e4 LT |
4319 | continue; |
4320 | ||
5956dce1 | 4321 | intf->run_to_completion = 1; |
1da177e4 LT |
4322 | /* Send the event announcing the panic. */ |
4323 | intf->handlers->set_run_to_completion(intf->send_info, 1); | |
895dcfd1 | 4324 | ipmi_panic_request_and_wait(intf, &addr, &msg); |
1da177e4 LT |
4325 | } |
4326 | ||
4327 | #ifdef CONFIG_IPMI_PANIC_STRING | |
c70d7499 CM |
4328 | /* |
4329 | * On every interface, dump a bunch of OEM event holding the | |
4330 | * string. | |
4331 | */ | |
4332 | if (!str) | |
1da177e4 LT |
4333 | return; |
4334 | ||
bca0324d CM |
4335 | /* For every registered interface, send the event. */ |
4336 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
1da177e4 LT |
4337 | char *p = str; |
4338 | struct ipmi_ipmb_addr *ipmb; | |
4339 | int j; | |
4340 | ||
bca0324d CM |
4341 | if (intf->intf_num == -1) |
4342 | /* Interface was not ready yet. */ | |
1da177e4 LT |
4343 | continue; |
4344 | ||
78ba2faf CM |
4345 | /* |
4346 | * intf_num is used as an marker to tell if the | |
4347 | * interface is valid. Thus we need a read barrier to | |
4348 | * make sure data fetched before checking intf_num | |
4349 | * won't be used. | |
4350 | */ | |
4351 | smp_rmb(); | |
4352 | ||
c70d7499 CM |
4353 | /* |
4354 | * First job here is to figure out where to send the | |
4355 | * OEM events. There's no way in IPMI to send OEM | |
4356 | * events using an event send command, so we have to | |
4357 | * find the SEL to put them in and stick them in | |
4358 | * there. | |
4359 | */ | |
1da177e4 LT |
4360 | |
4361 | /* Get capabilities from the get device id. */ | |
4362 | intf->local_sel_device = 0; | |
4363 | intf->local_event_generator = 0; | |
4364 | intf->event_receiver = 0; | |
4365 | ||
4366 | /* Request the device info from the local MC. */ | |
4367 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
4368 | msg.cmd = IPMI_GET_DEVICE_ID_CMD; | |
4369 | msg.data = NULL; | |
4370 | msg.data_len = 0; | |
4371 | intf->null_user_handler = device_id_fetcher; | |
895dcfd1 | 4372 | ipmi_panic_request_and_wait(intf, &addr, &msg); |
1da177e4 LT |
4373 | |
4374 | if (intf->local_event_generator) { | |
4375 | /* Request the event receiver from the local MC. */ | |
4376 | msg.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; | |
4377 | msg.cmd = IPMI_GET_EVENT_RECEIVER_CMD; | |
4378 | msg.data = NULL; | |
4379 | msg.data_len = 0; | |
4380 | intf->null_user_handler = event_receiver_fetcher; | |
895dcfd1 | 4381 | ipmi_panic_request_and_wait(intf, &addr, &msg); |
1da177e4 LT |
4382 | } |
4383 | intf->null_user_handler = NULL; | |
4384 | ||
c70d7499 CM |
4385 | /* |
4386 | * Validate the event receiver. The low bit must not | |
4387 | * be 1 (it must be a valid IPMB address), it cannot | |
4388 | * be zero, and it must not be my address. | |
4389 | */ | |
4390 | if (((intf->event_receiver & 1) == 0) | |
1da177e4 | 4391 | && (intf->event_receiver != 0) |
c70d7499 CM |
4392 | && (intf->event_receiver != intf->channels[0].address)) { |
4393 | /* | |
4394 | * The event receiver is valid, send an IPMB | |
4395 | * message. | |
4396 | */ | |
1da177e4 LT |
4397 | ipmb = (struct ipmi_ipmb_addr *) &addr; |
4398 | ipmb->addr_type = IPMI_IPMB_ADDR_TYPE; | |
4399 | ipmb->channel = 0; /* FIXME - is this right? */ | |
4400 | ipmb->lun = intf->event_receiver_lun; | |
4401 | ipmb->slave_addr = intf->event_receiver; | |
4402 | } else if (intf->local_sel_device) { | |
c70d7499 CM |
4403 | /* |
4404 | * The event receiver was not valid (or was | |
4405 | * me), but I am an SEL device, just dump it | |
4406 | * in my SEL. | |
4407 | */ | |
1da177e4 LT |
4408 | si = (struct ipmi_system_interface_addr *) &addr; |
4409 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
4410 | si->channel = IPMI_BMC_CHANNEL; | |
4411 | si->lun = 0; | |
4412 | } else | |
4413 | continue; /* No where to send the event. */ | |
4414 | ||
1da177e4 LT |
4415 | msg.netfn = IPMI_NETFN_STORAGE_REQUEST; /* Storage. */ |
4416 | msg.cmd = IPMI_ADD_SEL_ENTRY_CMD; | |
4417 | msg.data = data; | |
4418 | msg.data_len = 16; | |
4419 | ||
4420 | j = 0; | |
4421 | while (*p) { | |
4422 | int size = strlen(p); | |
4423 | ||
4424 | if (size > 11) | |
4425 | size = 11; | |
4426 | data[0] = 0; | |
4427 | data[1] = 0; | |
4428 | data[2] = 0xf0; /* OEM event without timestamp. */ | |
c14979b9 | 4429 | data[3] = intf->channels[0].address; |
1da177e4 | 4430 | data[4] = j++; /* sequence # */ |
c70d7499 CM |
4431 | /* |
4432 | * Always give 11 bytes, so strncpy will fill | |
4433 | * it with zeroes for me. | |
4434 | */ | |
1da177e4 LT |
4435 | strncpy(data+5, p, 11); |
4436 | p += size; | |
4437 | ||
895dcfd1 | 4438 | ipmi_panic_request_and_wait(intf, &addr, &msg); |
1da177e4 | 4439 | } |
c70d7499 | 4440 | } |
1da177e4 LT |
4441 | #endif /* CONFIG_IPMI_PANIC_STRING */ |
4442 | } | |
4443 | #endif /* CONFIG_IPMI_PANIC_EVENT */ | |
4444 | ||
0c8204b3 | 4445 | static int has_panicked; |
1da177e4 LT |
4446 | |
4447 | static int panic_event(struct notifier_block *this, | |
4448 | unsigned long event, | |
c70d7499 | 4449 | void *ptr) |
1da177e4 | 4450 | { |
1da177e4 LT |
4451 | ipmi_smi_t intf; |
4452 | ||
f18190bd | 4453 | if (has_panicked) |
1da177e4 | 4454 | return NOTIFY_DONE; |
f18190bd | 4455 | has_panicked = 1; |
1da177e4 LT |
4456 | |
4457 | /* For every registered interface, set it to run to completion. */ | |
bca0324d | 4458 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b2c03941 CM |
4459 | if (!intf->handlers) |
4460 | /* Interface is not ready. */ | |
1da177e4 LT |
4461 | continue; |
4462 | ||
5956dce1 | 4463 | intf->run_to_completion = 1; |
1da177e4 LT |
4464 | intf->handlers->set_run_to_completion(intf->send_info, 1); |
4465 | } | |
4466 | ||
4467 | #ifdef CONFIG_IPMI_PANIC_EVENT | |
4468 | send_panic_events(ptr); | |
4469 | #endif | |
4470 | ||
4471 | return NOTIFY_DONE; | |
4472 | } | |
4473 | ||
4474 | static struct notifier_block panic_block = { | |
4475 | .notifier_call = panic_event, | |
4476 | .next = NULL, | |
4477 | .priority = 200 /* priority: INT_MAX >= x >= 0 */ | |
4478 | }; | |
4479 | ||
4480 | static int ipmi_init_msghandler(void) | |
4481 | { | |
50c812b2 | 4482 | int rv; |
1da177e4 LT |
4483 | |
4484 | if (initialized) | |
4485 | return 0; | |
4486 | ||
fe2d5ffc | 4487 | rv = driver_register(&ipmidriver.driver); |
50c812b2 CM |
4488 | if (rv) { |
4489 | printk(KERN_ERR PFX "Could not register IPMI driver\n"); | |
4490 | return rv; | |
4491 | } | |
4492 | ||
1da177e4 | 4493 | printk(KERN_INFO "ipmi message handler version " |
1fdd75bd | 4494 | IPMI_DRIVER_VERSION "\n"); |
1da177e4 | 4495 | |
3b625943 | 4496 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
4497 | proc_ipmi_root = proc_mkdir("ipmi", NULL); |
4498 | if (!proc_ipmi_root) { | |
4499 | printk(KERN_ERR PFX "Unable to create IPMI proc dir"); | |
4500 | return -ENOMEM; | |
4501 | } | |
4502 | ||
3b625943 | 4503 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 4504 | |
409035e0 CM |
4505 | setup_timer(&ipmi_timer, ipmi_timeout, 0); |
4506 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); | |
1da177e4 | 4507 | |
e041c683 | 4508 | atomic_notifier_chain_register(&panic_notifier_list, &panic_block); |
1da177e4 LT |
4509 | |
4510 | initialized = 1; | |
4511 | ||
4512 | return 0; | |
4513 | } | |
4514 | ||
60ee6d5f | 4515 | static int __init ipmi_init_msghandler_mod(void) |
1da177e4 LT |
4516 | { |
4517 | ipmi_init_msghandler(); | |
4518 | return 0; | |
4519 | } | |
4520 | ||
60ee6d5f | 4521 | static void __exit cleanup_ipmi(void) |
1da177e4 LT |
4522 | { |
4523 | int count; | |
4524 | ||
4525 | if (!initialized) | |
4526 | return; | |
4527 | ||
e041c683 | 4528 | atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block); |
1da177e4 | 4529 | |
c70d7499 CM |
4530 | /* |
4531 | * This can't be called if any interfaces exist, so no worry | |
4532 | * about shutting down the interfaces. | |
4533 | */ | |
1da177e4 | 4534 | |
c70d7499 CM |
4535 | /* |
4536 | * Tell the timer to stop, then wait for it to stop. This | |
4537 | * avoids problems with race conditions removing the timer | |
4538 | * here. | |
4539 | */ | |
8f43f84f CM |
4540 | atomic_inc(&stop_operation); |
4541 | del_timer_sync(&ipmi_timer); | |
1da177e4 | 4542 | |
3b625943 | 4543 | #ifdef CONFIG_PROC_FS |
3542ae4c | 4544 | remove_proc_entry(proc_ipmi_root->name, NULL); |
3b625943 | 4545 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 4546 | |
fe2d5ffc | 4547 | driver_unregister(&ipmidriver.driver); |
50c812b2 | 4548 | |
1da177e4 LT |
4549 | initialized = 0; |
4550 | ||
4551 | /* Check for buffer leaks. */ | |
4552 | count = atomic_read(&smi_msg_inuse_count); | |
4553 | if (count != 0) | |
4554 | printk(KERN_WARNING PFX "SMI message count %d at exit\n", | |
4555 | count); | |
4556 | count = atomic_read(&recv_msg_inuse_count); | |
4557 | if (count != 0) | |
4558 | printk(KERN_WARNING PFX "recv message count %d at exit\n", | |
4559 | count); | |
4560 | } | |
4561 | module_exit(cleanup_ipmi); | |
4562 | ||
4563 | module_init(ipmi_init_msghandler_mod); | |
4564 | MODULE_LICENSE("GPL"); | |
1fdd75bd | 4565 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
c70d7499 CM |
4566 | MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI" |
4567 | " interface."); | |
1fdd75bd | 4568 | MODULE_VERSION(IPMI_DRIVER_VERSION); |