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1da177e4 LT |
1 | /* |
2 | * ipmi_msghandler.c | |
3 | * | |
4 | * Incoming and outgoing message routing for an IPMI interface. | |
5 | * | |
6 | * Author: MontaVista Software, Inc. | |
7 | * Corey Minyard <minyard@mvista.com> | |
8 | * source@mvista.com | |
9 | * | |
10 | * Copyright 2002 MontaVista Software Inc. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | * | |
18 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
19 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
20 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
23 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS | |
24 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
26 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
27 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
28 | * | |
29 | * You should have received a copy of the GNU General Public License along | |
30 | * with this program; if not, write to the Free Software Foundation, Inc., | |
31 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
32 | */ | |
33 | ||
1da177e4 LT |
34 | #include <linux/module.h> |
35 | #include <linux/errno.h> | |
36 | #include <asm/system.h> | |
1da177e4 | 37 | #include <linux/poll.h> |
a99bbaf5 | 38 | #include <linux/sched.h> |
07412736 | 39 | #include <linux/seq_file.h> |
1da177e4 | 40 | #include <linux/spinlock.h> |
d6dfd131 | 41 | #include <linux/mutex.h> |
1da177e4 LT |
42 | #include <linux/slab.h> |
43 | #include <linux/ipmi.h> | |
44 | #include <linux/ipmi_smi.h> | |
45 | #include <linux/notifier.h> | |
46 | #include <linux/init.h> | |
47 | #include <linux/proc_fs.h> | |
393d2cc3 | 48 | #include <linux/rcupdate.h> |
7adf579c | 49 | #include <linux/interrupt.h> |
1da177e4 LT |
50 | |
51 | #define PFX "IPMI message handler: " | |
1fdd75bd | 52 | |
f7caa1b5 | 53 | #define IPMI_DRIVER_VERSION "39.2" |
1da177e4 LT |
54 | |
55 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void); | |
56 | static int ipmi_init_msghandler(void); | |
7adf579c CM |
57 | static void smi_recv_tasklet(unsigned long); |
58 | static void handle_new_recv_msgs(ipmi_smi_t intf); | |
1da177e4 | 59 | |
0c8204b3 | 60 | static int initialized; |
1da177e4 | 61 | |
3b625943 | 62 | #ifdef CONFIG_PROC_FS |
0c8204b3 | 63 | static struct proc_dir_entry *proc_ipmi_root; |
3b625943 | 64 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 65 | |
b9675136 CM |
66 | /* Remain in auto-maintenance mode for this amount of time (in ms). */ |
67 | #define IPMI_MAINTENANCE_MODE_TIMEOUT 30000 | |
68 | ||
1da177e4 LT |
69 | #define MAX_EVENTS_IN_QUEUE 25 |
70 | ||
c70d7499 CM |
71 | /* |
72 | * Don't let a message sit in a queue forever, always time it with at lest | |
73 | * the max message timer. This is in milliseconds. | |
74 | */ | |
1da177e4 LT |
75 | #define MAX_MSG_TIMEOUT 60000 |
76 | ||
393d2cc3 CM |
77 | /* |
78 | * The main "user" data structure. | |
79 | */ | |
c70d7499 | 80 | struct ipmi_user { |
1da177e4 LT |
81 | struct list_head link; |
82 | ||
393d2cc3 CM |
83 | /* Set to "0" when the user is destroyed. */ |
84 | int valid; | |
85 | ||
86 | struct kref refcount; | |
87 | ||
1da177e4 LT |
88 | /* The upper layer that handles receive messages. */ |
89 | struct ipmi_user_hndl *handler; | |
90 | void *handler_data; | |
91 | ||
92 | /* The interface this user is bound to. */ | |
93 | ipmi_smi_t intf; | |
94 | ||
95 | /* Does this interface receive IPMI events? */ | |
96 | int gets_events; | |
97 | }; | |
98 | ||
c70d7499 | 99 | struct cmd_rcvr { |
1da177e4 LT |
100 | struct list_head link; |
101 | ||
102 | ipmi_user_t user; | |
103 | unsigned char netfn; | |
104 | unsigned char cmd; | |
c69c3127 | 105 | unsigned int chans; |
393d2cc3 CM |
106 | |
107 | /* | |
108 | * This is used to form a linked lised during mass deletion. | |
109 | * Since this is in an RCU list, we cannot use the link above | |
110 | * or change any data until the RCU period completes. So we | |
111 | * use this next variable during mass deletion so we can have | |
112 | * a list and don't have to wait and restart the search on | |
c70d7499 CM |
113 | * every individual deletion of a command. |
114 | */ | |
393d2cc3 | 115 | struct cmd_rcvr *next; |
1da177e4 LT |
116 | }; |
117 | ||
c70d7499 | 118 | struct seq_table { |
1da177e4 LT |
119 | unsigned int inuse : 1; |
120 | unsigned int broadcast : 1; | |
121 | ||
122 | unsigned long timeout; | |
123 | unsigned long orig_timeout; | |
124 | unsigned int retries_left; | |
125 | ||
c70d7499 CM |
126 | /* |
127 | * To verify on an incoming send message response that this is | |
128 | * the message that the response is for, we keep a sequence id | |
129 | * and increment it every time we send a message. | |
130 | */ | |
1da177e4 LT |
131 | long seqid; |
132 | ||
c70d7499 CM |
133 | /* |
134 | * This is held so we can properly respond to the message on a | |
135 | * timeout, and it is used to hold the temporary data for | |
136 | * retransmission, too. | |
137 | */ | |
1da177e4 LT |
138 | struct ipmi_recv_msg *recv_msg; |
139 | }; | |
140 | ||
c70d7499 CM |
141 | /* |
142 | * Store the information in a msgid (long) to allow us to find a | |
143 | * sequence table entry from the msgid. | |
144 | */ | |
1da177e4 LT |
145 | #define STORE_SEQ_IN_MSGID(seq, seqid) (((seq&0xff)<<26) | (seqid&0x3ffffff)) |
146 | ||
147 | #define GET_SEQ_FROM_MSGID(msgid, seq, seqid) \ | |
148 | do { \ | |
149 | seq = ((msgid >> 26) & 0x3f); \ | |
150 | seqid = (msgid & 0x3fffff); \ | |
c70d7499 | 151 | } while (0) |
1da177e4 LT |
152 | |
153 | #define NEXT_SEQID(seqid) (((seqid) + 1) & 0x3fffff) | |
154 | ||
c70d7499 | 155 | struct ipmi_channel { |
1da177e4 LT |
156 | unsigned char medium; |
157 | unsigned char protocol; | |
c14979b9 | 158 | |
c70d7499 CM |
159 | /* |
160 | * My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, | |
161 | * but may be changed by the user. | |
162 | */ | |
c14979b9 CM |
163 | unsigned char address; |
164 | ||
c70d7499 CM |
165 | /* |
166 | * My LUN. This should generally stay the SMS LUN, but just in | |
167 | * case... | |
168 | */ | |
c14979b9 | 169 | unsigned char lun; |
1da177e4 LT |
170 | }; |
171 | ||
3b625943 | 172 | #ifdef CONFIG_PROC_FS |
c70d7499 | 173 | struct ipmi_proc_entry { |
1da177e4 LT |
174 | char *name; |
175 | struct ipmi_proc_entry *next; | |
176 | }; | |
3b625943 | 177 | #endif |
1da177e4 | 178 | |
c70d7499 | 179 | struct bmc_device { |
50c812b2 CM |
180 | struct platform_device *dev; |
181 | struct ipmi_device_id id; | |
182 | unsigned char guid[16]; | |
183 | int guid_set; | |
184 | ||
185 | struct kref refcount; | |
186 | ||
187 | /* bmc device attributes */ | |
188 | struct device_attribute device_id_attr; | |
189 | struct device_attribute provides_dev_sdrs_attr; | |
190 | struct device_attribute revision_attr; | |
191 | struct device_attribute firmware_rev_attr; | |
192 | struct device_attribute version_attr; | |
193 | struct device_attribute add_dev_support_attr; | |
194 | struct device_attribute manufacturer_id_attr; | |
195 | struct device_attribute product_id_attr; | |
196 | struct device_attribute guid_attr; | |
197 | struct device_attribute aux_firmware_rev_attr; | |
198 | }; | |
199 | ||
b2655f26 KB |
200 | /* |
201 | * Various statistics for IPMI, these index stats[] in the ipmi_smi | |
202 | * structure. | |
203 | */ | |
73f2bdb9 CM |
204 | enum ipmi_stat_indexes { |
205 | /* Commands we got from the user that were invalid. */ | |
206 | IPMI_STAT_sent_invalid_commands = 0, | |
b2655f26 | 207 | |
73f2bdb9 CM |
208 | /* Commands we sent to the MC. */ |
209 | IPMI_STAT_sent_local_commands, | |
b2655f26 | 210 | |
73f2bdb9 CM |
211 | /* Responses from the MC that were delivered to a user. */ |
212 | IPMI_STAT_handled_local_responses, | |
b2655f26 | 213 | |
73f2bdb9 CM |
214 | /* Responses from the MC that were not delivered to a user. */ |
215 | IPMI_STAT_unhandled_local_responses, | |
b2655f26 | 216 | |
73f2bdb9 CM |
217 | /* Commands we sent out to the IPMB bus. */ |
218 | IPMI_STAT_sent_ipmb_commands, | |
b2655f26 | 219 | |
73f2bdb9 CM |
220 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
221 | IPMI_STAT_sent_ipmb_command_errs, | |
b2655f26 | 222 | |
73f2bdb9 CM |
223 | /* Each retransmit increments this count. */ |
224 | IPMI_STAT_retransmitted_ipmb_commands, | |
b2655f26 | 225 | |
73f2bdb9 CM |
226 | /* |
227 | * When a message times out (runs out of retransmits) this is | |
228 | * incremented. | |
229 | */ | |
230 | IPMI_STAT_timed_out_ipmb_commands, | |
b2655f26 | 231 | |
73f2bdb9 CM |
232 | /* |
233 | * This is like above, but for broadcasts. Broadcasts are | |
234 | * *not* included in the above count (they are expected to | |
235 | * time out). | |
236 | */ | |
237 | IPMI_STAT_timed_out_ipmb_broadcasts, | |
b2655f26 | 238 | |
73f2bdb9 CM |
239 | /* Responses I have sent to the IPMB bus. */ |
240 | IPMI_STAT_sent_ipmb_responses, | |
b2655f26 | 241 | |
73f2bdb9 CM |
242 | /* The response was delivered to the user. */ |
243 | IPMI_STAT_handled_ipmb_responses, | |
b2655f26 | 244 | |
73f2bdb9 CM |
245 | /* The response had invalid data in it. */ |
246 | IPMI_STAT_invalid_ipmb_responses, | |
b2655f26 | 247 | |
73f2bdb9 CM |
248 | /* The response didn't have anyone waiting for it. */ |
249 | IPMI_STAT_unhandled_ipmb_responses, | |
b2655f26 | 250 | |
73f2bdb9 CM |
251 | /* Commands we sent out to the IPMB bus. */ |
252 | IPMI_STAT_sent_lan_commands, | |
b2655f26 | 253 | |
73f2bdb9 CM |
254 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
255 | IPMI_STAT_sent_lan_command_errs, | |
b2655f26 | 256 | |
73f2bdb9 CM |
257 | /* Each retransmit increments this count. */ |
258 | IPMI_STAT_retransmitted_lan_commands, | |
b2655f26 | 259 | |
73f2bdb9 CM |
260 | /* |
261 | * When a message times out (runs out of retransmits) this is | |
262 | * incremented. | |
263 | */ | |
264 | IPMI_STAT_timed_out_lan_commands, | |
265 | ||
266 | /* Responses I have sent to the IPMB bus. */ | |
267 | IPMI_STAT_sent_lan_responses, | |
b2655f26 | 268 | |
73f2bdb9 CM |
269 | /* The response was delivered to the user. */ |
270 | IPMI_STAT_handled_lan_responses, | |
b2655f26 | 271 | |
73f2bdb9 CM |
272 | /* The response had invalid data in it. */ |
273 | IPMI_STAT_invalid_lan_responses, | |
b2655f26 | 274 | |
73f2bdb9 CM |
275 | /* The response didn't have anyone waiting for it. */ |
276 | IPMI_STAT_unhandled_lan_responses, | |
b2655f26 | 277 | |
73f2bdb9 CM |
278 | /* The command was delivered to the user. */ |
279 | IPMI_STAT_handled_commands, | |
b2655f26 | 280 | |
73f2bdb9 CM |
281 | /* The command had invalid data in it. */ |
282 | IPMI_STAT_invalid_commands, | |
b2655f26 | 283 | |
73f2bdb9 CM |
284 | /* The command didn't have anyone waiting for it. */ |
285 | IPMI_STAT_unhandled_commands, | |
b2655f26 | 286 | |
73f2bdb9 CM |
287 | /* Invalid data in an event. */ |
288 | IPMI_STAT_invalid_events, | |
b2655f26 | 289 | |
73f2bdb9 CM |
290 | /* Events that were received with the proper format. */ |
291 | IPMI_STAT_events, | |
b2655f26 | 292 | |
25176ed6 CM |
293 | /* Retransmissions on IPMB that failed. */ |
294 | IPMI_STAT_dropped_rexmit_ipmb_commands, | |
295 | ||
296 | /* Retransmissions on LAN that failed. */ | |
297 | IPMI_STAT_dropped_rexmit_lan_commands, | |
b2655f26 | 298 | |
73f2bdb9 CM |
299 | /* This *must* remain last, add new values above this. */ |
300 | IPMI_NUM_STATS | |
301 | }; | |
b2655f26 KB |
302 | |
303 | ||
1da177e4 | 304 | #define IPMI_IPMB_NUM_SEQ 64 |
c14979b9 | 305 | #define IPMI_MAX_CHANNELS 16 |
c70d7499 | 306 | struct ipmi_smi { |
1da177e4 LT |
307 | /* What interface number are we? */ |
308 | int intf_num; | |
309 | ||
393d2cc3 CM |
310 | struct kref refcount; |
311 | ||
bca0324d CM |
312 | /* Used for a list of interfaces. */ |
313 | struct list_head link; | |
314 | ||
c70d7499 CM |
315 | /* |
316 | * The list of upper layers that are using me. seq_lock | |
317 | * protects this. | |
318 | */ | |
393d2cc3 | 319 | struct list_head users; |
1da177e4 | 320 | |
b2c03941 CM |
321 | /* Information to supply to users. */ |
322 | unsigned char ipmi_version_major; | |
323 | unsigned char ipmi_version_minor; | |
324 | ||
1da177e4 LT |
325 | /* Used for wake ups at startup. */ |
326 | wait_queue_head_t waitq; | |
327 | ||
50c812b2 CM |
328 | struct bmc_device *bmc; |
329 | char *my_dev_name; | |
759643b8 | 330 | char *sysfs_name; |
1da177e4 | 331 | |
c70d7499 CM |
332 | /* |
333 | * This is the lower-layer's sender routine. Note that you | |
b2c03941 CM |
334 | * must either be holding the ipmi_interfaces_mutex or be in |
335 | * an umpreemptible region to use this. You must fetch the | |
c70d7499 CM |
336 | * value into a local variable and make sure it is not NULL. |
337 | */ | |
1da177e4 LT |
338 | struct ipmi_smi_handlers *handlers; |
339 | void *send_info; | |
340 | ||
3b625943 | 341 | #ifdef CONFIG_PROC_FS |
ac019151 CM |
342 | /* A list of proc entries for this interface. */ |
343 | struct mutex proc_entry_lock; | |
1da177e4 | 344 | struct ipmi_proc_entry *proc_entries; |
3b625943 | 345 | #endif |
1da177e4 | 346 | |
50c812b2 CM |
347 | /* Driver-model device for the system interface. */ |
348 | struct device *si_dev; | |
349 | ||
c70d7499 CM |
350 | /* |
351 | * A table of sequence numbers for this interface. We use the | |
352 | * sequence numbers for IPMB messages that go out of the | |
353 | * interface to match them up with their responses. A routine | |
354 | * is called periodically to time the items in this list. | |
355 | */ | |
1da177e4 LT |
356 | spinlock_t seq_lock; |
357 | struct seq_table seq_table[IPMI_IPMB_NUM_SEQ]; | |
358 | int curr_seq; | |
359 | ||
c70d7499 | 360 | /* |
7adf579c CM |
361 | * Messages queued for delivery. If delivery fails (out of memory |
362 | * for instance), They will stay in here to be processed later in a | |
363 | * periodic timer interrupt. The tasklet is for handling received | |
364 | * messages directly from the handler. | |
c70d7499 | 365 | */ |
1da177e4 LT |
366 | spinlock_t waiting_msgs_lock; |
367 | struct list_head waiting_msgs; | |
7adf579c CM |
368 | atomic_t watchdog_pretimeouts_to_deliver; |
369 | struct tasklet_struct recv_tasklet; | |
1da177e4 | 370 | |
c70d7499 CM |
371 | /* |
372 | * The list of command receivers that are registered for commands | |
373 | * on this interface. | |
374 | */ | |
d6dfd131 | 375 | struct mutex cmd_rcvrs_mutex; |
1da177e4 LT |
376 | struct list_head cmd_rcvrs; |
377 | ||
c70d7499 CM |
378 | /* |
379 | * Events that were queues because no one was there to receive | |
380 | * them. | |
381 | */ | |
1da177e4 LT |
382 | spinlock_t events_lock; /* For dealing with event stuff. */ |
383 | struct list_head waiting_events; | |
384 | unsigned int waiting_events_count; /* How many events in queue? */ | |
87ebd06f CM |
385 | char delivering_events; |
386 | char event_msg_printed; | |
1da177e4 | 387 | |
c70d7499 CM |
388 | /* |
389 | * The event receiver for my BMC, only really used at panic | |
390 | * shutdown as a place to store this. | |
391 | */ | |
1da177e4 LT |
392 | unsigned char event_receiver; |
393 | unsigned char event_receiver_lun; | |
394 | unsigned char local_sel_device; | |
395 | unsigned char local_event_generator; | |
396 | ||
b9675136 CM |
397 | /* For handling of maintenance mode. */ |
398 | int maintenance_mode; | |
399 | int maintenance_mode_enable; | |
400 | int auto_maintenance_timeout; | |
401 | spinlock_t maintenance_mode_lock; /* Used in a timer... */ | |
402 | ||
c70d7499 CM |
403 | /* |
404 | * A cheap hack, if this is non-null and a message to an | |
405 | * interface comes in with a NULL user, call this routine with | |
406 | * it. Note that the message will still be freed by the | |
407 | * caller. This only works on the system interface. | |
408 | */ | |
56a55ec6 | 409 | void (*null_user_handler)(ipmi_smi_t intf, struct ipmi_recv_msg *msg); |
1da177e4 | 410 | |
c70d7499 CM |
411 | /* |
412 | * When we are scanning the channels for an SMI, this will | |
413 | * tell which channel we are scanning. | |
414 | */ | |
1da177e4 LT |
415 | int curr_channel; |
416 | ||
417 | /* Channel information */ | |
418 | struct ipmi_channel channels[IPMI_MAX_CHANNELS]; | |
419 | ||
420 | /* Proc FS stuff. */ | |
421 | struct proc_dir_entry *proc_dir; | |
422 | char proc_dir_name[10]; | |
423 | ||
b2655f26 | 424 | atomic_t stats[IPMI_NUM_STATS]; |
5956dce1 KB |
425 | |
426 | /* | |
427 | * run_to_completion duplicate of smb_info, smi_info | |
428 | * and ipmi_serial_info structures. Used to decrease numbers of | |
429 | * parameters passed by "low" level IPMI code. | |
430 | */ | |
431 | int run_to_completion; | |
1da177e4 | 432 | }; |
50c812b2 | 433 | #define to_si_intf_from_dev(device) container_of(device, struct ipmi_smi, dev) |
1da177e4 | 434 | |
50c812b2 CM |
435 | /** |
436 | * The driver model view of the IPMI messaging driver. | |
437 | */ | |
fe2d5ffc DW |
438 | static struct platform_driver ipmidriver = { |
439 | .driver = { | |
440 | .name = "ipmi", | |
441 | .bus = &platform_bus_type | |
442 | } | |
50c812b2 CM |
443 | }; |
444 | static DEFINE_MUTEX(ipmidriver_mutex); | |
445 | ||
bed9759b | 446 | static LIST_HEAD(ipmi_interfaces); |
bca0324d | 447 | static DEFINE_MUTEX(ipmi_interfaces_mutex); |
1da177e4 | 448 | |
c70d7499 CM |
449 | /* |
450 | * List of watchers that want to know when smi's are added and deleted. | |
451 | */ | |
bed9759b | 452 | static LIST_HEAD(smi_watchers); |
b2c03941 | 453 | static DEFINE_MUTEX(smi_watchers_mutex); |
1da177e4 | 454 | |
393d2cc3 | 455 | |
b2655f26 KB |
456 | #define ipmi_inc_stat(intf, stat) \ |
457 | atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat]) | |
458 | #define ipmi_get_stat(intf, stat) \ | |
459 | ((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat])) | |
460 | ||
25176ed6 CM |
461 | static int is_lan_addr(struct ipmi_addr *addr) |
462 | { | |
463 | return addr->addr_type == IPMI_LAN_ADDR_TYPE; | |
464 | } | |
465 | ||
466 | static int is_ipmb_addr(struct ipmi_addr *addr) | |
467 | { | |
468 | return addr->addr_type == IPMI_IPMB_ADDR_TYPE; | |
469 | } | |
470 | ||
471 | static int is_ipmb_bcast_addr(struct ipmi_addr *addr) | |
472 | { | |
473 | return addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE; | |
474 | } | |
b2655f26 | 475 | |
393d2cc3 CM |
476 | static void free_recv_msg_list(struct list_head *q) |
477 | { | |
478 | struct ipmi_recv_msg *msg, *msg2; | |
479 | ||
480 | list_for_each_entry_safe(msg, msg2, q, link) { | |
481 | list_del(&msg->link); | |
482 | ipmi_free_recv_msg(msg); | |
483 | } | |
484 | } | |
485 | ||
f3ce6a0e CM |
486 | static void free_smi_msg_list(struct list_head *q) |
487 | { | |
488 | struct ipmi_smi_msg *msg, *msg2; | |
489 | ||
490 | list_for_each_entry_safe(msg, msg2, q, link) { | |
491 | list_del(&msg->link); | |
492 | ipmi_free_smi_msg(msg); | |
493 | } | |
494 | } | |
495 | ||
393d2cc3 CM |
496 | static void clean_up_interface_data(ipmi_smi_t intf) |
497 | { | |
498 | int i; | |
499 | struct cmd_rcvr *rcvr, *rcvr2; | |
393d2cc3 CM |
500 | struct list_head list; |
501 | ||
7adf579c CM |
502 | tasklet_kill(&intf->recv_tasklet); |
503 | ||
f3ce6a0e | 504 | free_smi_msg_list(&intf->waiting_msgs); |
393d2cc3 CM |
505 | free_recv_msg_list(&intf->waiting_events); |
506 | ||
78ba2faf CM |
507 | /* |
508 | * Wholesale remove all the entries from the list in the | |
509 | * interface and wait for RCU to know that none are in use. | |
510 | */ | |
d6dfd131 | 511 | mutex_lock(&intf->cmd_rcvrs_mutex); |
78ba2faf CM |
512 | INIT_LIST_HEAD(&list); |
513 | list_splice_init_rcu(&intf->cmd_rcvrs, &list, synchronize_rcu); | |
d6dfd131 | 514 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
515 | |
516 | list_for_each_entry_safe(rcvr, rcvr2, &list, link) | |
517 | kfree(rcvr); | |
518 | ||
519 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { | |
520 | if ((intf->seq_table[i].inuse) | |
c70d7499 | 521 | && (intf->seq_table[i].recv_msg)) |
393d2cc3 | 522 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
393d2cc3 CM |
523 | } |
524 | } | |
525 | ||
526 | static void intf_free(struct kref *ref) | |
527 | { | |
528 | ipmi_smi_t intf = container_of(ref, struct ipmi_smi, refcount); | |
529 | ||
530 | clean_up_interface_data(intf); | |
531 | kfree(intf); | |
532 | } | |
533 | ||
bca0324d | 534 | struct watcher_entry { |
b2c03941 CM |
535 | int intf_num; |
536 | ipmi_smi_t intf; | |
bca0324d | 537 | struct list_head link; |
bca0324d CM |
538 | }; |
539 | ||
1da177e4 LT |
540 | int ipmi_smi_watcher_register(struct ipmi_smi_watcher *watcher) |
541 | { | |
bca0324d | 542 | ipmi_smi_t intf; |
e381d1c4 | 543 | LIST_HEAD(to_deliver); |
bca0324d CM |
544 | struct watcher_entry *e, *e2; |
545 | ||
b2c03941 CM |
546 | mutex_lock(&smi_watchers_mutex); |
547 | ||
bca0324d CM |
548 | mutex_lock(&ipmi_interfaces_mutex); |
549 | ||
b2c03941 | 550 | /* Build a list of things to deliver. */ |
78ba2faf | 551 | list_for_each_entry(intf, &ipmi_interfaces, link) { |
bca0324d CM |
552 | if (intf->intf_num == -1) |
553 | continue; | |
554 | e = kmalloc(sizeof(*e), GFP_KERNEL); | |
555 | if (!e) | |
556 | goto out_err; | |
b2c03941 CM |
557 | kref_get(&intf->refcount); |
558 | e->intf = intf; | |
bca0324d CM |
559 | e->intf_num = intf->intf_num; |
560 | list_add_tail(&e->link, &to_deliver); | |
561 | } | |
1da177e4 | 562 | |
b2c03941 CM |
563 | /* We will succeed, so add it to the list. */ |
564 | list_add(&watcher->link, &smi_watchers); | |
bca0324d CM |
565 | |
566 | mutex_unlock(&ipmi_interfaces_mutex); | |
567 | ||
568 | list_for_each_entry_safe(e, e2, &to_deliver, link) { | |
569 | list_del(&e->link); | |
b2c03941 CM |
570 | watcher->new_smi(e->intf_num, e->intf->si_dev); |
571 | kref_put(&e->intf->refcount, intf_free); | |
bca0324d | 572 | kfree(e); |
1da177e4 | 573 | } |
bca0324d | 574 | |
b2c03941 | 575 | mutex_unlock(&smi_watchers_mutex); |
bca0324d | 576 | |
1da177e4 | 577 | return 0; |
bca0324d CM |
578 | |
579 | out_err: | |
b2c03941 CM |
580 | mutex_unlock(&ipmi_interfaces_mutex); |
581 | mutex_unlock(&smi_watchers_mutex); | |
bca0324d CM |
582 | list_for_each_entry_safe(e, e2, &to_deliver, link) { |
583 | list_del(&e->link); | |
b2c03941 | 584 | kref_put(&e->intf->refcount, intf_free); |
bca0324d CM |
585 | kfree(e); |
586 | } | |
587 | return -ENOMEM; | |
1da177e4 | 588 | } |
c70d7499 | 589 | EXPORT_SYMBOL(ipmi_smi_watcher_register); |
1da177e4 LT |
590 | |
591 | int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher) | |
592 | { | |
b2c03941 | 593 | mutex_lock(&smi_watchers_mutex); |
1da177e4 | 594 | list_del(&(watcher->link)); |
b2c03941 | 595 | mutex_unlock(&smi_watchers_mutex); |
1da177e4 LT |
596 | return 0; |
597 | } | |
c70d7499 | 598 | EXPORT_SYMBOL(ipmi_smi_watcher_unregister); |
1da177e4 | 599 | |
b2c03941 CM |
600 | /* |
601 | * Must be called with smi_watchers_mutex held. | |
602 | */ | |
1da177e4 | 603 | static void |
50c812b2 | 604 | call_smi_watchers(int i, struct device *dev) |
1da177e4 LT |
605 | { |
606 | struct ipmi_smi_watcher *w; | |
607 | ||
1da177e4 LT |
608 | list_for_each_entry(w, &smi_watchers, link) { |
609 | if (try_module_get(w->owner)) { | |
50c812b2 | 610 | w->new_smi(i, dev); |
1da177e4 LT |
611 | module_put(w->owner); |
612 | } | |
613 | } | |
1da177e4 LT |
614 | } |
615 | ||
616 | static int | |
617 | ipmi_addr_equal(struct ipmi_addr *addr1, struct ipmi_addr *addr2) | |
618 | { | |
619 | if (addr1->addr_type != addr2->addr_type) | |
620 | return 0; | |
621 | ||
622 | if (addr1->channel != addr2->channel) | |
623 | return 0; | |
624 | ||
625 | if (addr1->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
626 | struct ipmi_system_interface_addr *smi_addr1 | |
627 | = (struct ipmi_system_interface_addr *) addr1; | |
628 | struct ipmi_system_interface_addr *smi_addr2 | |
629 | = (struct ipmi_system_interface_addr *) addr2; | |
630 | return (smi_addr1->lun == smi_addr2->lun); | |
631 | } | |
632 | ||
25176ed6 | 633 | if (is_ipmb_addr(addr1) || is_ipmb_bcast_addr(addr1)) { |
1da177e4 LT |
634 | struct ipmi_ipmb_addr *ipmb_addr1 |
635 | = (struct ipmi_ipmb_addr *) addr1; | |
636 | struct ipmi_ipmb_addr *ipmb_addr2 | |
637 | = (struct ipmi_ipmb_addr *) addr2; | |
638 | ||
639 | return ((ipmb_addr1->slave_addr == ipmb_addr2->slave_addr) | |
640 | && (ipmb_addr1->lun == ipmb_addr2->lun)); | |
641 | } | |
642 | ||
25176ed6 | 643 | if (is_lan_addr(addr1)) { |
1da177e4 LT |
644 | struct ipmi_lan_addr *lan_addr1 |
645 | = (struct ipmi_lan_addr *) addr1; | |
646 | struct ipmi_lan_addr *lan_addr2 | |
647 | = (struct ipmi_lan_addr *) addr2; | |
648 | ||
649 | return ((lan_addr1->remote_SWID == lan_addr2->remote_SWID) | |
650 | && (lan_addr1->local_SWID == lan_addr2->local_SWID) | |
651 | && (lan_addr1->session_handle | |
652 | == lan_addr2->session_handle) | |
653 | && (lan_addr1->lun == lan_addr2->lun)); | |
654 | } | |
655 | ||
656 | return 1; | |
657 | } | |
658 | ||
659 | int ipmi_validate_addr(struct ipmi_addr *addr, int len) | |
660 | { | |
c70d7499 | 661 | if (len < sizeof(struct ipmi_system_interface_addr)) |
1da177e4 | 662 | return -EINVAL; |
1da177e4 LT |
663 | |
664 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
665 | if (addr->channel != IPMI_BMC_CHANNEL) | |
666 | return -EINVAL; | |
667 | return 0; | |
668 | } | |
669 | ||
670 | if ((addr->channel == IPMI_BMC_CHANNEL) | |
12fc1d7b | 671 | || (addr->channel >= IPMI_MAX_CHANNELS) |
1da177e4 LT |
672 | || (addr->channel < 0)) |
673 | return -EINVAL; | |
674 | ||
25176ed6 | 675 | if (is_ipmb_addr(addr) || is_ipmb_bcast_addr(addr)) { |
c70d7499 | 676 | if (len < sizeof(struct ipmi_ipmb_addr)) |
1da177e4 | 677 | return -EINVAL; |
1da177e4 LT |
678 | return 0; |
679 | } | |
680 | ||
25176ed6 | 681 | if (is_lan_addr(addr)) { |
c70d7499 | 682 | if (len < sizeof(struct ipmi_lan_addr)) |
1da177e4 | 683 | return -EINVAL; |
1da177e4 LT |
684 | return 0; |
685 | } | |
686 | ||
687 | return -EINVAL; | |
688 | } | |
c70d7499 | 689 | EXPORT_SYMBOL(ipmi_validate_addr); |
1da177e4 LT |
690 | |
691 | unsigned int ipmi_addr_length(int addr_type) | |
692 | { | |
693 | if (addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
694 | return sizeof(struct ipmi_system_interface_addr); | |
695 | ||
696 | if ((addr_type == IPMI_IPMB_ADDR_TYPE) | |
c70d7499 | 697 | || (addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
1da177e4 | 698 | return sizeof(struct ipmi_ipmb_addr); |
1da177e4 LT |
699 | |
700 | if (addr_type == IPMI_LAN_ADDR_TYPE) | |
701 | return sizeof(struct ipmi_lan_addr); | |
702 | ||
703 | return 0; | |
704 | } | |
c70d7499 | 705 | EXPORT_SYMBOL(ipmi_addr_length); |
1da177e4 LT |
706 | |
707 | static void deliver_response(struct ipmi_recv_msg *msg) | |
708 | { | |
8a3628d5 | 709 | if (!msg->user) { |
56a55ec6 | 710 | ipmi_smi_t intf = msg->user_msg_data; |
56a55ec6 CM |
711 | |
712 | /* Special handling for NULL users. */ | |
713 | if (intf->null_user_handler) { | |
714 | intf->null_user_handler(intf, msg); | |
b2655f26 | 715 | ipmi_inc_stat(intf, handled_local_responses); |
56a55ec6 CM |
716 | } else { |
717 | /* No handler, so give up. */ | |
b2655f26 | 718 | ipmi_inc_stat(intf, unhandled_local_responses); |
56a55ec6 CM |
719 | } |
720 | ipmi_free_recv_msg(msg); | |
721 | } else { | |
393d2cc3 CM |
722 | ipmi_user_t user = msg->user; |
723 | user->handler->ipmi_recv_hndl(msg, user->handler_data); | |
56a55ec6 | 724 | } |
1da177e4 LT |
725 | } |
726 | ||
b2c03941 CM |
727 | static void |
728 | deliver_err_response(struct ipmi_recv_msg *msg, int err) | |
729 | { | |
730 | msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
731 | msg->msg_data[0] = err; | |
732 | msg->msg.netfn |= 1; /* Convert to a response. */ | |
733 | msg->msg.data_len = 1; | |
734 | msg->msg.data = msg->msg_data; | |
735 | deliver_response(msg); | |
736 | } | |
737 | ||
c70d7499 CM |
738 | /* |
739 | * Find the next sequence number not being used and add the given | |
740 | * message with the given timeout to the sequence table. This must be | |
741 | * called with the interface's seq_lock held. | |
742 | */ | |
1da177e4 LT |
743 | static int intf_next_seq(ipmi_smi_t intf, |
744 | struct ipmi_recv_msg *recv_msg, | |
745 | unsigned long timeout, | |
746 | int retries, | |
747 | int broadcast, | |
748 | unsigned char *seq, | |
749 | long *seqid) | |
750 | { | |
751 | int rv = 0; | |
752 | unsigned int i; | |
753 | ||
c70d7499 CM |
754 | for (i = intf->curr_seq; (i+1)%IPMI_IPMB_NUM_SEQ != intf->curr_seq; |
755 | i = (i+1)%IPMI_IPMB_NUM_SEQ) { | |
8a3628d5 | 756 | if (!intf->seq_table[i].inuse) |
1da177e4 LT |
757 | break; |
758 | } | |
759 | ||
8a3628d5 | 760 | if (!intf->seq_table[i].inuse) { |
1da177e4 LT |
761 | intf->seq_table[i].recv_msg = recv_msg; |
762 | ||
c70d7499 CM |
763 | /* |
764 | * Start with the maximum timeout, when the send response | |
765 | * comes in we will start the real timer. | |
766 | */ | |
1da177e4 LT |
767 | intf->seq_table[i].timeout = MAX_MSG_TIMEOUT; |
768 | intf->seq_table[i].orig_timeout = timeout; | |
769 | intf->seq_table[i].retries_left = retries; | |
770 | intf->seq_table[i].broadcast = broadcast; | |
771 | intf->seq_table[i].inuse = 1; | |
772 | intf->seq_table[i].seqid = NEXT_SEQID(intf->seq_table[i].seqid); | |
773 | *seq = i; | |
774 | *seqid = intf->seq_table[i].seqid; | |
775 | intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ; | |
776 | } else { | |
777 | rv = -EAGAIN; | |
778 | } | |
c70d7499 | 779 | |
1da177e4 LT |
780 | return rv; |
781 | } | |
782 | ||
c70d7499 CM |
783 | /* |
784 | * Return the receive message for the given sequence number and | |
785 | * release the sequence number so it can be reused. Some other data | |
786 | * is passed in to be sure the message matches up correctly (to help | |
787 | * guard against message coming in after their timeout and the | |
788 | * sequence number being reused). | |
789 | */ | |
1da177e4 LT |
790 | static int intf_find_seq(ipmi_smi_t intf, |
791 | unsigned char seq, | |
792 | short channel, | |
793 | unsigned char cmd, | |
794 | unsigned char netfn, | |
795 | struct ipmi_addr *addr, | |
796 | struct ipmi_recv_msg **recv_msg) | |
797 | { | |
798 | int rv = -ENODEV; | |
799 | unsigned long flags; | |
800 | ||
801 | if (seq >= IPMI_IPMB_NUM_SEQ) | |
802 | return -EINVAL; | |
803 | ||
804 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
805 | if (intf->seq_table[seq].inuse) { | |
806 | struct ipmi_recv_msg *msg = intf->seq_table[seq].recv_msg; | |
807 | ||
c70d7499 CM |
808 | if ((msg->addr.channel == channel) && (msg->msg.cmd == cmd) |
809 | && (msg->msg.netfn == netfn) | |
810 | && (ipmi_addr_equal(addr, &(msg->addr)))) { | |
1da177e4 LT |
811 | *recv_msg = msg; |
812 | intf->seq_table[seq].inuse = 0; | |
813 | rv = 0; | |
814 | } | |
815 | } | |
816 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
817 | ||
818 | return rv; | |
819 | } | |
820 | ||
821 | ||
822 | /* Start the timer for a specific sequence table entry. */ | |
823 | static int intf_start_seq_timer(ipmi_smi_t intf, | |
824 | long msgid) | |
825 | { | |
826 | int rv = -ENODEV; | |
827 | unsigned long flags; | |
828 | unsigned char seq; | |
829 | unsigned long seqid; | |
830 | ||
831 | ||
832 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); | |
833 | ||
834 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
c70d7499 CM |
835 | /* |
836 | * We do this verification because the user can be deleted | |
837 | * while a message is outstanding. | |
838 | */ | |
1da177e4 | 839 | if ((intf->seq_table[seq].inuse) |
c70d7499 | 840 | && (intf->seq_table[seq].seqid == seqid)) { |
1da177e4 LT |
841 | struct seq_table *ent = &(intf->seq_table[seq]); |
842 | ent->timeout = ent->orig_timeout; | |
843 | rv = 0; | |
844 | } | |
845 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
846 | ||
847 | return rv; | |
848 | } | |
849 | ||
850 | /* Got an error for the send message for a specific sequence number. */ | |
851 | static int intf_err_seq(ipmi_smi_t intf, | |
852 | long msgid, | |
853 | unsigned int err) | |
854 | { | |
855 | int rv = -ENODEV; | |
856 | unsigned long flags; | |
857 | unsigned char seq; | |
858 | unsigned long seqid; | |
859 | struct ipmi_recv_msg *msg = NULL; | |
860 | ||
861 | ||
862 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); | |
863 | ||
864 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
c70d7499 CM |
865 | /* |
866 | * We do this verification because the user can be deleted | |
867 | * while a message is outstanding. | |
868 | */ | |
1da177e4 | 869 | if ((intf->seq_table[seq].inuse) |
c70d7499 | 870 | && (intf->seq_table[seq].seqid == seqid)) { |
1da177e4 LT |
871 | struct seq_table *ent = &(intf->seq_table[seq]); |
872 | ||
873 | ent->inuse = 0; | |
874 | msg = ent->recv_msg; | |
875 | rv = 0; | |
876 | } | |
877 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
878 | ||
b2c03941 CM |
879 | if (msg) |
880 | deliver_err_response(msg, err); | |
1da177e4 LT |
881 | |
882 | return rv; | |
883 | } | |
884 | ||
885 | ||
886 | int ipmi_create_user(unsigned int if_num, | |
887 | struct ipmi_user_hndl *handler, | |
888 | void *handler_data, | |
889 | ipmi_user_t *user) | |
890 | { | |
891 | unsigned long flags; | |
892 | ipmi_user_t new_user; | |
893 | int rv = 0; | |
894 | ipmi_smi_t intf; | |
895 | ||
c70d7499 CM |
896 | /* |
897 | * There is no module usecount here, because it's not | |
898 | * required. Since this can only be used by and called from | |
899 | * other modules, they will implicitly use this module, and | |
900 | * thus this can't be removed unless the other modules are | |
901 | * removed. | |
902 | */ | |
1da177e4 LT |
903 | |
904 | if (handler == NULL) | |
905 | return -EINVAL; | |
906 | ||
c70d7499 CM |
907 | /* |
908 | * Make sure the driver is actually initialized, this handles | |
909 | * problems with initialization order. | |
910 | */ | |
1da177e4 LT |
911 | if (!initialized) { |
912 | rv = ipmi_init_msghandler(); | |
913 | if (rv) | |
914 | return rv; | |
915 | ||
c70d7499 CM |
916 | /* |
917 | * The init code doesn't return an error if it was turned | |
918 | * off, but it won't initialize. Check that. | |
919 | */ | |
1da177e4 LT |
920 | if (!initialized) |
921 | return -ENODEV; | |
922 | } | |
923 | ||
924 | new_user = kmalloc(sizeof(*new_user), GFP_KERNEL); | |
8a3628d5 | 925 | if (!new_user) |
1da177e4 LT |
926 | return -ENOMEM; |
927 | ||
b2c03941 | 928 | mutex_lock(&ipmi_interfaces_mutex); |
bca0324d CM |
929 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
930 | if (intf->intf_num == if_num) | |
931 | goto found; | |
1da177e4 | 932 | } |
b2c03941 | 933 | /* Not found, return an error */ |
bca0324d CM |
934 | rv = -EINVAL; |
935 | goto out_kfree; | |
1da177e4 | 936 | |
bca0324d | 937 | found: |
393d2cc3 CM |
938 | /* Note that each existing user holds a refcount to the interface. */ |
939 | kref_get(&intf->refcount); | |
1da177e4 | 940 | |
393d2cc3 | 941 | kref_init(&new_user->refcount); |
1da177e4 LT |
942 | new_user->handler = handler; |
943 | new_user->handler_data = handler_data; | |
944 | new_user->intf = intf; | |
945 | new_user->gets_events = 0; | |
946 | ||
947 | if (!try_module_get(intf->handlers->owner)) { | |
948 | rv = -ENODEV; | |
5c98d29a | 949 | goto out_kref; |
1da177e4 LT |
950 | } |
951 | ||
952 | if (intf->handlers->inc_usecount) { | |
953 | rv = intf->handlers->inc_usecount(intf->send_info); | |
954 | if (rv) { | |
955 | module_put(intf->handlers->owner); | |
5c98d29a | 956 | goto out_kref; |
1da177e4 LT |
957 | } |
958 | } | |
959 | ||
c70d7499 CM |
960 | /* |
961 | * Hold the lock so intf->handlers is guaranteed to be good | |
962 | * until now | |
963 | */ | |
b2c03941 CM |
964 | mutex_unlock(&ipmi_interfaces_mutex); |
965 | ||
393d2cc3 CM |
966 | new_user->valid = 1; |
967 | spin_lock_irqsave(&intf->seq_lock, flags); | |
968 | list_add_rcu(&new_user->link, &intf->users); | |
969 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
970 | *user = new_user; | |
971 | return 0; | |
1da177e4 | 972 | |
5c98d29a | 973 | out_kref: |
393d2cc3 | 974 | kref_put(&intf->refcount, intf_free); |
5c98d29a | 975 | out_kfree: |
b2c03941 | 976 | mutex_unlock(&ipmi_interfaces_mutex); |
5c98d29a | 977 | kfree(new_user); |
1da177e4 LT |
978 | return rv; |
979 | } | |
c70d7499 | 980 | EXPORT_SYMBOL(ipmi_create_user); |
1da177e4 | 981 | |
16f4232c ZY |
982 | int ipmi_get_smi_info(int if_num, struct ipmi_smi_info *data) |
983 | { | |
984 | int rv = 0; | |
985 | ipmi_smi_t intf; | |
986 | struct ipmi_smi_handlers *handlers; | |
987 | ||
988 | mutex_lock(&ipmi_interfaces_mutex); | |
989 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
990 | if (intf->intf_num == if_num) | |
991 | goto found; | |
992 | } | |
993 | /* Not found, return an error */ | |
994 | rv = -EINVAL; | |
995 | mutex_unlock(&ipmi_interfaces_mutex); | |
996 | return rv; | |
997 | ||
998 | found: | |
999 | handlers = intf->handlers; | |
1000 | rv = -ENOSYS; | |
1001 | if (handlers->get_smi_info) | |
1002 | rv = handlers->get_smi_info(intf->send_info, data); | |
1003 | mutex_unlock(&ipmi_interfaces_mutex); | |
1004 | ||
1005 | return rv; | |
1006 | } | |
1007 | EXPORT_SYMBOL(ipmi_get_smi_info); | |
1008 | ||
393d2cc3 CM |
1009 | static void free_user(struct kref *ref) |
1010 | { | |
1011 | ipmi_user_t user = container_of(ref, struct ipmi_user, refcount); | |
1012 | kfree(user); | |
1013 | } | |
1014 | ||
1015 | int ipmi_destroy_user(ipmi_user_t user) | |
1da177e4 | 1016 | { |
393d2cc3 | 1017 | ipmi_smi_t intf = user->intf; |
1da177e4 LT |
1018 | int i; |
1019 | unsigned long flags; | |
393d2cc3 | 1020 | struct cmd_rcvr *rcvr; |
393d2cc3 | 1021 | struct cmd_rcvr *rcvrs = NULL; |
1da177e4 | 1022 | |
8a3628d5 | 1023 | user->valid = 0; |
1da177e4 | 1024 | |
393d2cc3 CM |
1025 | /* Remove the user from the interface's sequence table. */ |
1026 | spin_lock_irqsave(&intf->seq_lock, flags); | |
1027 | list_del_rcu(&user->link); | |
1da177e4 | 1028 | |
e8b33617 | 1029 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
393d2cc3 | 1030 | if (intf->seq_table[i].inuse |
c70d7499 | 1031 | && (intf->seq_table[i].recv_msg->user == user)) { |
393d2cc3 | 1032 | intf->seq_table[i].inuse = 0; |
b2c03941 | 1033 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
1da177e4 LT |
1034 | } |
1035 | } | |
393d2cc3 CM |
1036 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
1037 | ||
1038 | /* | |
1039 | * Remove the user from the command receiver's table. First | |
1040 | * we build a list of everything (not using the standard link, | |
1041 | * since other things may be using it till we do | |
1042 | * synchronize_rcu()) then free everything in that list. | |
1043 | */ | |
d6dfd131 | 1044 | mutex_lock(&intf->cmd_rcvrs_mutex); |
066bb8d0 | 1045 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
1da177e4 | 1046 | if (rcvr->user == user) { |
393d2cc3 CM |
1047 | list_del_rcu(&rcvr->link); |
1048 | rcvr->next = rcvrs; | |
1049 | rcvrs = rcvr; | |
1da177e4 LT |
1050 | } |
1051 | } | |
d6dfd131 | 1052 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
1053 | synchronize_rcu(); |
1054 | while (rcvrs) { | |
1055 | rcvr = rcvrs; | |
1056 | rcvrs = rcvr->next; | |
1057 | kfree(rcvr); | |
1058 | } | |
1da177e4 | 1059 | |
b2c03941 CM |
1060 | mutex_lock(&ipmi_interfaces_mutex); |
1061 | if (intf->handlers) { | |
1062 | module_put(intf->handlers->owner); | |
1063 | if (intf->handlers->dec_usecount) | |
1064 | intf->handlers->dec_usecount(intf->send_info); | |
1065 | } | |
1066 | mutex_unlock(&ipmi_interfaces_mutex); | |
1da177e4 | 1067 | |
393d2cc3 | 1068 | kref_put(&intf->refcount, intf_free); |
1da177e4 | 1069 | |
393d2cc3 | 1070 | kref_put(&user->refcount, free_user); |
1da177e4 | 1071 | |
8a3628d5 | 1072 | return 0; |
1da177e4 | 1073 | } |
c70d7499 | 1074 | EXPORT_SYMBOL(ipmi_destroy_user); |
1da177e4 LT |
1075 | |
1076 | void ipmi_get_version(ipmi_user_t user, | |
1077 | unsigned char *major, | |
1078 | unsigned char *minor) | |
1079 | { | |
b2c03941 CM |
1080 | *major = user->intf->ipmi_version_major; |
1081 | *minor = user->intf->ipmi_version_minor; | |
1da177e4 | 1082 | } |
c70d7499 | 1083 | EXPORT_SYMBOL(ipmi_get_version); |
1da177e4 | 1084 | |
c14979b9 CM |
1085 | int ipmi_set_my_address(ipmi_user_t user, |
1086 | unsigned int channel, | |
1087 | unsigned char address) | |
1da177e4 | 1088 | { |
c14979b9 CM |
1089 | if (channel >= IPMI_MAX_CHANNELS) |
1090 | return -EINVAL; | |
1091 | user->intf->channels[channel].address = address; | |
1092 | return 0; | |
1da177e4 | 1093 | } |
c70d7499 | 1094 | EXPORT_SYMBOL(ipmi_set_my_address); |
1da177e4 | 1095 | |
c14979b9 CM |
1096 | int ipmi_get_my_address(ipmi_user_t user, |
1097 | unsigned int channel, | |
1098 | unsigned char *address) | |
1da177e4 | 1099 | { |
c14979b9 CM |
1100 | if (channel >= IPMI_MAX_CHANNELS) |
1101 | return -EINVAL; | |
1102 | *address = user->intf->channels[channel].address; | |
1103 | return 0; | |
1da177e4 | 1104 | } |
c70d7499 | 1105 | EXPORT_SYMBOL(ipmi_get_my_address); |
1da177e4 | 1106 | |
c14979b9 CM |
1107 | int ipmi_set_my_LUN(ipmi_user_t user, |
1108 | unsigned int channel, | |
1109 | unsigned char LUN) | |
1da177e4 | 1110 | { |
c14979b9 CM |
1111 | if (channel >= IPMI_MAX_CHANNELS) |
1112 | return -EINVAL; | |
1113 | user->intf->channels[channel].lun = LUN & 0x3; | |
1114 | return 0; | |
1da177e4 | 1115 | } |
c70d7499 | 1116 | EXPORT_SYMBOL(ipmi_set_my_LUN); |
1da177e4 | 1117 | |
c14979b9 CM |
1118 | int ipmi_get_my_LUN(ipmi_user_t user, |
1119 | unsigned int channel, | |
1120 | unsigned char *address) | |
1da177e4 | 1121 | { |
c14979b9 CM |
1122 | if (channel >= IPMI_MAX_CHANNELS) |
1123 | return -EINVAL; | |
1124 | *address = user->intf->channels[channel].lun; | |
1125 | return 0; | |
1da177e4 | 1126 | } |
c70d7499 | 1127 | EXPORT_SYMBOL(ipmi_get_my_LUN); |
1da177e4 | 1128 | |
b9675136 CM |
1129 | int ipmi_get_maintenance_mode(ipmi_user_t user) |
1130 | { | |
1131 | int mode; | |
1132 | unsigned long flags; | |
1133 | ||
1134 | spin_lock_irqsave(&user->intf->maintenance_mode_lock, flags); | |
1135 | mode = user->intf->maintenance_mode; | |
1136 | spin_unlock_irqrestore(&user->intf->maintenance_mode_lock, flags); | |
1137 | ||
1138 | return mode; | |
1139 | } | |
1140 | EXPORT_SYMBOL(ipmi_get_maintenance_mode); | |
1141 | ||
1142 | static void maintenance_mode_update(ipmi_smi_t intf) | |
1143 | { | |
1144 | if (intf->handlers->set_maintenance_mode) | |
1145 | intf->handlers->set_maintenance_mode( | |
1146 | intf->send_info, intf->maintenance_mode_enable); | |
1147 | } | |
1148 | ||
1149 | int ipmi_set_maintenance_mode(ipmi_user_t user, int mode) | |
1150 | { | |
1151 | int rv = 0; | |
1152 | unsigned long flags; | |
1153 | ipmi_smi_t intf = user->intf; | |
1154 | ||
1155 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); | |
1156 | if (intf->maintenance_mode != mode) { | |
1157 | switch (mode) { | |
1158 | case IPMI_MAINTENANCE_MODE_AUTO: | |
1159 | intf->maintenance_mode = mode; | |
1160 | intf->maintenance_mode_enable | |
1161 | = (intf->auto_maintenance_timeout > 0); | |
1162 | break; | |
1163 | ||
1164 | case IPMI_MAINTENANCE_MODE_OFF: | |
1165 | intf->maintenance_mode = mode; | |
1166 | intf->maintenance_mode_enable = 0; | |
1167 | break; | |
1168 | ||
1169 | case IPMI_MAINTENANCE_MODE_ON: | |
1170 | intf->maintenance_mode = mode; | |
1171 | intf->maintenance_mode_enable = 1; | |
1172 | break; | |
1173 | ||
1174 | default: | |
1175 | rv = -EINVAL; | |
1176 | goto out_unlock; | |
1177 | } | |
1178 | ||
1179 | maintenance_mode_update(intf); | |
1180 | } | |
1181 | out_unlock: | |
1182 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, flags); | |
1183 | ||
1184 | return rv; | |
1185 | } | |
1186 | EXPORT_SYMBOL(ipmi_set_maintenance_mode); | |
1187 | ||
1da177e4 LT |
1188 | int ipmi_set_gets_events(ipmi_user_t user, int val) |
1189 | { | |
393d2cc3 CM |
1190 | unsigned long flags; |
1191 | ipmi_smi_t intf = user->intf; | |
1192 | struct ipmi_recv_msg *msg, *msg2; | |
1193 | struct list_head msgs; | |
1da177e4 | 1194 | |
393d2cc3 CM |
1195 | INIT_LIST_HEAD(&msgs); |
1196 | ||
1197 | spin_lock_irqsave(&intf->events_lock, flags); | |
1da177e4 LT |
1198 | user->gets_events = val; |
1199 | ||
b2c03941 CM |
1200 | if (intf->delivering_events) |
1201 | /* | |
1202 | * Another thread is delivering events for this, so | |
1203 | * let it handle any new events. | |
1204 | */ | |
1205 | goto out; | |
1206 | ||
1207 | /* Deliver any queued events. */ | |
1208 | while (user->gets_events && !list_empty(&intf->waiting_events)) { | |
179e0917 AM |
1209 | list_for_each_entry_safe(msg, msg2, &intf->waiting_events, link) |
1210 | list_move_tail(&msg->link, &msgs); | |
4791c03d | 1211 | intf->waiting_events_count = 0; |
87ebd06f CM |
1212 | if (intf->event_msg_printed) { |
1213 | printk(KERN_WARNING PFX "Event queue no longer" | |
1214 | " full\n"); | |
1215 | intf->event_msg_printed = 0; | |
1216 | } | |
393d2cc3 | 1217 | |
b2c03941 CM |
1218 | intf->delivering_events = 1; |
1219 | spin_unlock_irqrestore(&intf->events_lock, flags); | |
1220 | ||
1221 | list_for_each_entry_safe(msg, msg2, &msgs, link) { | |
1222 | msg->user = user; | |
1223 | kref_get(&user->refcount); | |
1224 | deliver_response(msg); | |
1225 | } | |
1226 | ||
1227 | spin_lock_irqsave(&intf->events_lock, flags); | |
1228 | intf->delivering_events = 0; | |
393d2cc3 CM |
1229 | } |
1230 | ||
b2c03941 | 1231 | out: |
393d2cc3 | 1232 | spin_unlock_irqrestore(&intf->events_lock, flags); |
1da177e4 LT |
1233 | |
1234 | return 0; | |
1235 | } | |
c70d7499 | 1236 | EXPORT_SYMBOL(ipmi_set_gets_events); |
1da177e4 | 1237 | |
393d2cc3 CM |
1238 | static struct cmd_rcvr *find_cmd_rcvr(ipmi_smi_t intf, |
1239 | unsigned char netfn, | |
c69c3127 CM |
1240 | unsigned char cmd, |
1241 | unsigned char chan) | |
393d2cc3 CM |
1242 | { |
1243 | struct cmd_rcvr *rcvr; | |
1244 | ||
1245 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { | |
c69c3127 CM |
1246 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) |
1247 | && (rcvr->chans & (1 << chan))) | |
393d2cc3 CM |
1248 | return rcvr; |
1249 | } | |
1250 | return NULL; | |
1251 | } | |
1252 | ||
c69c3127 CM |
1253 | static int is_cmd_rcvr_exclusive(ipmi_smi_t intf, |
1254 | unsigned char netfn, | |
1255 | unsigned char cmd, | |
1256 | unsigned int chans) | |
1257 | { | |
1258 | struct cmd_rcvr *rcvr; | |
1259 | ||
1260 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { | |
1261 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) | |
1262 | && (rcvr->chans & chans)) | |
1263 | return 0; | |
1264 | } | |
1265 | return 1; | |
1266 | } | |
1267 | ||
1da177e4 LT |
1268 | int ipmi_register_for_cmd(ipmi_user_t user, |
1269 | unsigned char netfn, | |
c69c3127 CM |
1270 | unsigned char cmd, |
1271 | unsigned int chans) | |
1da177e4 | 1272 | { |
393d2cc3 CM |
1273 | ipmi_smi_t intf = user->intf; |
1274 | struct cmd_rcvr *rcvr; | |
393d2cc3 | 1275 | int rv = 0; |
1da177e4 LT |
1276 | |
1277 | ||
1278 | rcvr = kmalloc(sizeof(*rcvr), GFP_KERNEL); | |
8a3628d5 | 1279 | if (!rcvr) |
1da177e4 | 1280 | return -ENOMEM; |
393d2cc3 CM |
1281 | rcvr->cmd = cmd; |
1282 | rcvr->netfn = netfn; | |
c69c3127 | 1283 | rcvr->chans = chans; |
393d2cc3 | 1284 | rcvr->user = user; |
1da177e4 | 1285 | |
d6dfd131 | 1286 | mutex_lock(&intf->cmd_rcvrs_mutex); |
1da177e4 | 1287 | /* Make sure the command/netfn is not already registered. */ |
c69c3127 | 1288 | if (!is_cmd_rcvr_exclusive(intf, netfn, cmd, chans)) { |
393d2cc3 CM |
1289 | rv = -EBUSY; |
1290 | goto out_unlock; | |
1da177e4 | 1291 | } |
877197ef | 1292 | |
393d2cc3 | 1293 | list_add_rcu(&rcvr->link, &intf->cmd_rcvrs); |
1da177e4 | 1294 | |
393d2cc3 | 1295 | out_unlock: |
d6dfd131 | 1296 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
1da177e4 LT |
1297 | if (rv) |
1298 | kfree(rcvr); | |
1299 | ||
1300 | return rv; | |
1301 | } | |
c70d7499 | 1302 | EXPORT_SYMBOL(ipmi_register_for_cmd); |
1da177e4 LT |
1303 | |
1304 | int ipmi_unregister_for_cmd(ipmi_user_t user, | |
1305 | unsigned char netfn, | |
c69c3127 CM |
1306 | unsigned char cmd, |
1307 | unsigned int chans) | |
1da177e4 | 1308 | { |
393d2cc3 CM |
1309 | ipmi_smi_t intf = user->intf; |
1310 | struct cmd_rcvr *rcvr; | |
c69c3127 CM |
1311 | struct cmd_rcvr *rcvrs = NULL; |
1312 | int i, rv = -ENOENT; | |
1da177e4 | 1313 | |
d6dfd131 | 1314 | mutex_lock(&intf->cmd_rcvrs_mutex); |
c69c3127 CM |
1315 | for (i = 0; i < IPMI_NUM_CHANNELS; i++) { |
1316 | if (((1 << i) & chans) == 0) | |
1317 | continue; | |
1318 | rcvr = find_cmd_rcvr(intf, netfn, cmd, i); | |
1319 | if (rcvr == NULL) | |
1320 | continue; | |
1321 | if (rcvr->user == user) { | |
1322 | rv = 0; | |
1323 | rcvr->chans &= ~chans; | |
1324 | if (rcvr->chans == 0) { | |
1325 | list_del_rcu(&rcvr->link); | |
1326 | rcvr->next = rcvrs; | |
1327 | rcvrs = rcvr; | |
1328 | } | |
1329 | } | |
1330 | } | |
1331 | mutex_unlock(&intf->cmd_rcvrs_mutex); | |
1332 | synchronize_rcu(); | |
1333 | while (rcvrs) { | |
1334 | rcvr = rcvrs; | |
1335 | rcvrs = rcvr->next; | |
393d2cc3 | 1336 | kfree(rcvr); |
1da177e4 | 1337 | } |
c69c3127 | 1338 | return rv; |
1da177e4 | 1339 | } |
c70d7499 | 1340 | EXPORT_SYMBOL(ipmi_unregister_for_cmd); |
1da177e4 | 1341 | |
1da177e4 LT |
1342 | static unsigned char |
1343 | ipmb_checksum(unsigned char *data, int size) | |
1344 | { | |
1345 | unsigned char csum = 0; | |
c70d7499 | 1346 | |
1da177e4 LT |
1347 | for (; size > 0; size--, data++) |
1348 | csum += *data; | |
1349 | ||
1350 | return -csum; | |
1351 | } | |
1352 | ||
1353 | static inline void format_ipmb_msg(struct ipmi_smi_msg *smi_msg, | |
1354 | struct kernel_ipmi_msg *msg, | |
1355 | struct ipmi_ipmb_addr *ipmb_addr, | |
1356 | long msgid, | |
1357 | unsigned char ipmb_seq, | |
1358 | int broadcast, | |
1359 | unsigned char source_address, | |
1360 | unsigned char source_lun) | |
1361 | { | |
1362 | int i = broadcast; | |
1363 | ||
1364 | /* Format the IPMB header data. */ | |
1365 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1366 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1367 | smi_msg->data[2] = ipmb_addr->channel; | |
1368 | if (broadcast) | |
1369 | smi_msg->data[3] = 0; | |
1370 | smi_msg->data[i+3] = ipmb_addr->slave_addr; | |
1371 | smi_msg->data[i+4] = (msg->netfn << 2) | (ipmb_addr->lun & 0x3); | |
1372 | smi_msg->data[i+5] = ipmb_checksum(&(smi_msg->data[i+3]), 2); | |
1373 | smi_msg->data[i+6] = source_address; | |
1374 | smi_msg->data[i+7] = (ipmb_seq << 2) | source_lun; | |
1375 | smi_msg->data[i+8] = msg->cmd; | |
1376 | ||
1377 | /* Now tack on the data to the message. */ | |
1378 | if (msg->data_len > 0) | |
1379 | memcpy(&(smi_msg->data[i+9]), msg->data, | |
1380 | msg->data_len); | |
1381 | smi_msg->data_size = msg->data_len + 9; | |
1382 | ||
1383 | /* Now calculate the checksum and tack it on. */ | |
1384 | smi_msg->data[i+smi_msg->data_size] | |
1385 | = ipmb_checksum(&(smi_msg->data[i+6]), | |
1386 | smi_msg->data_size-6); | |
1387 | ||
c70d7499 CM |
1388 | /* |
1389 | * Add on the checksum size and the offset from the | |
1390 | * broadcast. | |
1391 | */ | |
1da177e4 LT |
1392 | smi_msg->data_size += 1 + i; |
1393 | ||
1394 | smi_msg->msgid = msgid; | |
1395 | } | |
1396 | ||
1397 | static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg, | |
1398 | struct kernel_ipmi_msg *msg, | |
1399 | struct ipmi_lan_addr *lan_addr, | |
1400 | long msgid, | |
1401 | unsigned char ipmb_seq, | |
1402 | unsigned char source_lun) | |
1403 | { | |
1404 | /* Format the IPMB header data. */ | |
1405 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1406 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1407 | smi_msg->data[2] = lan_addr->channel; | |
1408 | smi_msg->data[3] = lan_addr->session_handle; | |
1409 | smi_msg->data[4] = lan_addr->remote_SWID; | |
1410 | smi_msg->data[5] = (msg->netfn << 2) | (lan_addr->lun & 0x3); | |
1411 | smi_msg->data[6] = ipmb_checksum(&(smi_msg->data[4]), 2); | |
1412 | smi_msg->data[7] = lan_addr->local_SWID; | |
1413 | smi_msg->data[8] = (ipmb_seq << 2) | source_lun; | |
1414 | smi_msg->data[9] = msg->cmd; | |
1415 | ||
1416 | /* Now tack on the data to the message. */ | |
1417 | if (msg->data_len > 0) | |
1418 | memcpy(&(smi_msg->data[10]), msg->data, | |
1419 | msg->data_len); | |
1420 | smi_msg->data_size = msg->data_len + 10; | |
1421 | ||
1422 | /* Now calculate the checksum and tack it on. */ | |
1423 | smi_msg->data[smi_msg->data_size] | |
1424 | = ipmb_checksum(&(smi_msg->data[7]), | |
1425 | smi_msg->data_size-7); | |
1426 | ||
c70d7499 CM |
1427 | /* |
1428 | * Add on the checksum size and the offset from the | |
1429 | * broadcast. | |
1430 | */ | |
1da177e4 LT |
1431 | smi_msg->data_size += 1; |
1432 | ||
1433 | smi_msg->msgid = msgid; | |
1434 | } | |
1435 | ||
c70d7499 CM |
1436 | /* |
1437 | * Separate from ipmi_request so that the user does not have to be | |
1438 | * supplied in certain circumstances (mainly at panic time). If | |
1439 | * messages are supplied, they will be freed, even if an error | |
1440 | * occurs. | |
1441 | */ | |
393d2cc3 CM |
1442 | static int i_ipmi_request(ipmi_user_t user, |
1443 | ipmi_smi_t intf, | |
1444 | struct ipmi_addr *addr, | |
1445 | long msgid, | |
1446 | struct kernel_ipmi_msg *msg, | |
1447 | void *user_msg_data, | |
1448 | void *supplied_smi, | |
1449 | struct ipmi_recv_msg *supplied_recv, | |
1450 | int priority, | |
1451 | unsigned char source_address, | |
1452 | unsigned char source_lun, | |
1453 | int retries, | |
1454 | unsigned int retry_time_ms) | |
1da177e4 | 1455 | { |
b2c03941 CM |
1456 | int rv = 0; |
1457 | struct ipmi_smi_msg *smi_msg; | |
1458 | struct ipmi_recv_msg *recv_msg; | |
1459 | unsigned long flags; | |
1460 | struct ipmi_smi_handlers *handlers; | |
1da177e4 LT |
1461 | |
1462 | ||
c70d7499 | 1463 | if (supplied_recv) |
1da177e4 | 1464 | recv_msg = supplied_recv; |
c70d7499 | 1465 | else { |
1da177e4 | 1466 | recv_msg = ipmi_alloc_recv_msg(); |
c70d7499 | 1467 | if (recv_msg == NULL) |
1da177e4 | 1468 | return -ENOMEM; |
1da177e4 LT |
1469 | } |
1470 | recv_msg->user_msg_data = user_msg_data; | |
1471 | ||
c70d7499 | 1472 | if (supplied_smi) |
1da177e4 | 1473 | smi_msg = (struct ipmi_smi_msg *) supplied_smi; |
c70d7499 | 1474 | else { |
1da177e4 LT |
1475 | smi_msg = ipmi_alloc_smi_msg(); |
1476 | if (smi_msg == NULL) { | |
1477 | ipmi_free_recv_msg(recv_msg); | |
1478 | return -ENOMEM; | |
1479 | } | |
1480 | } | |
1481 | ||
b2c03941 CM |
1482 | rcu_read_lock(); |
1483 | handlers = intf->handlers; | |
1484 | if (!handlers) { | |
1485 | rv = -ENODEV; | |
1486 | goto out_err; | |
1487 | } | |
1488 | ||
1da177e4 | 1489 | recv_msg->user = user; |
393d2cc3 CM |
1490 | if (user) |
1491 | kref_get(&user->refcount); | |
1da177e4 | 1492 | recv_msg->msgid = msgid; |
c70d7499 CM |
1493 | /* |
1494 | * Store the message to send in the receive message so timeout | |
1495 | * responses can get the proper response data. | |
1496 | */ | |
1da177e4 LT |
1497 | recv_msg->msg = *msg; |
1498 | ||
1499 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
1500 | struct ipmi_system_interface_addr *smi_addr; | |
1501 | ||
1502 | if (msg->netfn & 1) { | |
1503 | /* Responses are not allowed to the SMI. */ | |
1504 | rv = -EINVAL; | |
1505 | goto out_err; | |
1506 | } | |
1507 | ||
1508 | smi_addr = (struct ipmi_system_interface_addr *) addr; | |
1509 | if (smi_addr->lun > 3) { | |
b2655f26 | 1510 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1511 | rv = -EINVAL; |
1512 | goto out_err; | |
1513 | } | |
1514 | ||
1515 | memcpy(&recv_msg->addr, smi_addr, sizeof(*smi_addr)); | |
1516 | ||
1517 | if ((msg->netfn == IPMI_NETFN_APP_REQUEST) | |
1518 | && ((msg->cmd == IPMI_SEND_MSG_CMD) | |
1519 | || (msg->cmd == IPMI_GET_MSG_CMD) | |
c70d7499 CM |
1520 | || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD))) { |
1521 | /* | |
1522 | * We don't let the user do these, since we manage | |
1523 | * the sequence numbers. | |
1524 | */ | |
b2655f26 | 1525 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1526 | rv = -EINVAL; |
1527 | goto out_err; | |
1528 | } | |
1529 | ||
b9675136 CM |
1530 | if (((msg->netfn == IPMI_NETFN_APP_REQUEST) |
1531 | && ((msg->cmd == IPMI_COLD_RESET_CMD) | |
1532 | || (msg->cmd == IPMI_WARM_RESET_CMD))) | |
c70d7499 | 1533 | || (msg->netfn == IPMI_NETFN_FIRMWARE_REQUEST)) { |
b9675136 CM |
1534 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); |
1535 | intf->auto_maintenance_timeout | |
1536 | = IPMI_MAINTENANCE_MODE_TIMEOUT; | |
1537 | if (!intf->maintenance_mode | |
c70d7499 | 1538 | && !intf->maintenance_mode_enable) { |
b9675136 CM |
1539 | intf->maintenance_mode_enable = 1; |
1540 | maintenance_mode_update(intf); | |
1541 | } | |
1542 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, | |
1543 | flags); | |
1544 | } | |
1545 | ||
1da177e4 | 1546 | if ((msg->data_len + 2) > IPMI_MAX_MSG_LENGTH) { |
b2655f26 | 1547 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1548 | rv = -EMSGSIZE; |
1549 | goto out_err; | |
1550 | } | |
1551 | ||
1552 | smi_msg->data[0] = (msg->netfn << 2) | (smi_addr->lun & 0x3); | |
1553 | smi_msg->data[1] = msg->cmd; | |
1554 | smi_msg->msgid = msgid; | |
1555 | smi_msg->user_data = recv_msg; | |
1556 | if (msg->data_len > 0) | |
1557 | memcpy(&(smi_msg->data[2]), msg->data, msg->data_len); | |
1558 | smi_msg->data_size = msg->data_len + 2; | |
b2655f26 | 1559 | ipmi_inc_stat(intf, sent_local_commands); |
25176ed6 | 1560 | } else if (is_ipmb_addr(addr) || is_ipmb_bcast_addr(addr)) { |
1da177e4 LT |
1561 | struct ipmi_ipmb_addr *ipmb_addr; |
1562 | unsigned char ipmb_seq; | |
1563 | long seqid; | |
1564 | int broadcast = 0; | |
1565 | ||
9c101fd4 | 1566 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
b2655f26 | 1567 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1568 | rv = -EINVAL; |
1569 | goto out_err; | |
1570 | } | |
1571 | ||
1572 | if (intf->channels[addr->channel].medium | |
c70d7499 | 1573 | != IPMI_CHANNEL_MEDIUM_IPMB) { |
b2655f26 | 1574 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1575 | rv = -EINVAL; |
1576 | goto out_err; | |
1577 | } | |
1578 | ||
1579 | if (retries < 0) { | |
1580 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) | |
1581 | retries = 0; /* Don't retry broadcasts. */ | |
1582 | else | |
1583 | retries = 4; | |
1584 | } | |
1585 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) { | |
c70d7499 CM |
1586 | /* |
1587 | * Broadcasts add a zero at the beginning of the | |
1588 | * message, but otherwise is the same as an IPMB | |
1589 | * address. | |
1590 | */ | |
1da177e4 LT |
1591 | addr->addr_type = IPMI_IPMB_ADDR_TYPE; |
1592 | broadcast = 1; | |
1593 | } | |
1594 | ||
1595 | ||
1596 | /* Default to 1 second retries. */ | |
1597 | if (retry_time_ms == 0) | |
1598 | retry_time_ms = 1000; | |
1599 | ||
c70d7499 CM |
1600 | /* |
1601 | * 9 for the header and 1 for the checksum, plus | |
1602 | * possibly one for the broadcast. | |
1603 | */ | |
1da177e4 | 1604 | if ((msg->data_len + 10 + broadcast) > IPMI_MAX_MSG_LENGTH) { |
b2655f26 | 1605 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1606 | rv = -EMSGSIZE; |
1607 | goto out_err; | |
1608 | } | |
1609 | ||
1610 | ipmb_addr = (struct ipmi_ipmb_addr *) addr; | |
1611 | if (ipmb_addr->lun > 3) { | |
b2655f26 | 1612 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1613 | rv = -EINVAL; |
1614 | goto out_err; | |
1615 | } | |
1616 | ||
1617 | memcpy(&recv_msg->addr, ipmb_addr, sizeof(*ipmb_addr)); | |
1618 | ||
1619 | if (recv_msg->msg.netfn & 0x1) { | |
c70d7499 CM |
1620 | /* |
1621 | * It's a response, so use the user's sequence | |
1622 | * from msgid. | |
1623 | */ | |
b2655f26 | 1624 | ipmi_inc_stat(intf, sent_ipmb_responses); |
1da177e4 LT |
1625 | format_ipmb_msg(smi_msg, msg, ipmb_addr, msgid, |
1626 | msgid, broadcast, | |
1627 | source_address, source_lun); | |
1628 | ||
c70d7499 CM |
1629 | /* |
1630 | * Save the receive message so we can use it | |
1631 | * to deliver the response. | |
1632 | */ | |
1da177e4 LT |
1633 | smi_msg->user_data = recv_msg; |
1634 | } else { | |
1635 | /* It's a command, so get a sequence for it. */ | |
1636 | ||
1637 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1638 | ||
c70d7499 CM |
1639 | /* |
1640 | * Create a sequence number with a 1 second | |
1641 | * timeout and 4 retries. | |
1642 | */ | |
1da177e4 LT |
1643 | rv = intf_next_seq(intf, |
1644 | recv_msg, | |
1645 | retry_time_ms, | |
1646 | retries, | |
1647 | broadcast, | |
1648 | &ipmb_seq, | |
1649 | &seqid); | |
1650 | if (rv) { | |
c70d7499 CM |
1651 | /* |
1652 | * We have used up all the sequence numbers, | |
1653 | * probably, so abort. | |
1654 | */ | |
1da177e4 LT |
1655 | spin_unlock_irqrestore(&(intf->seq_lock), |
1656 | flags); | |
1657 | goto out_err; | |
1658 | } | |
1659 | ||
25176ed6 CM |
1660 | ipmi_inc_stat(intf, sent_ipmb_commands); |
1661 | ||
c70d7499 CM |
1662 | /* |
1663 | * Store the sequence number in the message, | |
1664 | * so that when the send message response | |
1665 | * comes back we can start the timer. | |
1666 | */ | |
1da177e4 LT |
1667 | format_ipmb_msg(smi_msg, msg, ipmb_addr, |
1668 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1669 | ipmb_seq, broadcast, | |
1670 | source_address, source_lun); | |
1671 | ||
c70d7499 CM |
1672 | /* |
1673 | * Copy the message into the recv message data, so we | |
1674 | * can retransmit it later if necessary. | |
1675 | */ | |
1da177e4 LT |
1676 | memcpy(recv_msg->msg_data, smi_msg->data, |
1677 | smi_msg->data_size); | |
1678 | recv_msg->msg.data = recv_msg->msg_data; | |
1679 | recv_msg->msg.data_len = smi_msg->data_size; | |
1680 | ||
c70d7499 CM |
1681 | /* |
1682 | * We don't unlock until here, because we need | |
1683 | * to copy the completed message into the | |
1684 | * recv_msg before we release the lock. | |
1685 | * Otherwise, race conditions may bite us. I | |
1686 | * know that's pretty paranoid, but I prefer | |
1687 | * to be correct. | |
1688 | */ | |
1da177e4 LT |
1689 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
1690 | } | |
25176ed6 | 1691 | } else if (is_lan_addr(addr)) { |
1da177e4 LT |
1692 | struct ipmi_lan_addr *lan_addr; |
1693 | unsigned char ipmb_seq; | |
1694 | long seqid; | |
1695 | ||
12fc1d7b | 1696 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
b2655f26 | 1697 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1698 | rv = -EINVAL; |
1699 | goto out_err; | |
1700 | } | |
1701 | ||
1702 | if ((intf->channels[addr->channel].medium | |
c70d7499 | 1703 | != IPMI_CHANNEL_MEDIUM_8023LAN) |
1da177e4 | 1704 | && (intf->channels[addr->channel].medium |
c70d7499 | 1705 | != IPMI_CHANNEL_MEDIUM_ASYNC)) { |
b2655f26 | 1706 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1707 | rv = -EINVAL; |
1708 | goto out_err; | |
1709 | } | |
1710 | ||
1711 | retries = 4; | |
1712 | ||
1713 | /* Default to 1 second retries. */ | |
1714 | if (retry_time_ms == 0) | |
1715 | retry_time_ms = 1000; | |
1716 | ||
1717 | /* 11 for the header and 1 for the checksum. */ | |
1718 | if ((msg->data_len + 12) > IPMI_MAX_MSG_LENGTH) { | |
b2655f26 | 1719 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1720 | rv = -EMSGSIZE; |
1721 | goto out_err; | |
1722 | } | |
1723 | ||
1724 | lan_addr = (struct ipmi_lan_addr *) addr; | |
1725 | if (lan_addr->lun > 3) { | |
b2655f26 | 1726 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1727 | rv = -EINVAL; |
1728 | goto out_err; | |
1729 | } | |
1730 | ||
1731 | memcpy(&recv_msg->addr, lan_addr, sizeof(*lan_addr)); | |
1732 | ||
1733 | if (recv_msg->msg.netfn & 0x1) { | |
c70d7499 CM |
1734 | /* |
1735 | * It's a response, so use the user's sequence | |
1736 | * from msgid. | |
1737 | */ | |
b2655f26 | 1738 | ipmi_inc_stat(intf, sent_lan_responses); |
1da177e4 LT |
1739 | format_lan_msg(smi_msg, msg, lan_addr, msgid, |
1740 | msgid, source_lun); | |
1741 | ||
c70d7499 CM |
1742 | /* |
1743 | * Save the receive message so we can use it | |
1744 | * to deliver the response. | |
1745 | */ | |
1da177e4 LT |
1746 | smi_msg->user_data = recv_msg; |
1747 | } else { | |
1748 | /* It's a command, so get a sequence for it. */ | |
1749 | ||
1750 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1751 | ||
c70d7499 CM |
1752 | /* |
1753 | * Create a sequence number with a 1 second | |
1754 | * timeout and 4 retries. | |
1755 | */ | |
1da177e4 LT |
1756 | rv = intf_next_seq(intf, |
1757 | recv_msg, | |
1758 | retry_time_ms, | |
1759 | retries, | |
1760 | 0, | |
1761 | &ipmb_seq, | |
1762 | &seqid); | |
1763 | if (rv) { | |
c70d7499 CM |
1764 | /* |
1765 | * We have used up all the sequence numbers, | |
1766 | * probably, so abort. | |
1767 | */ | |
1da177e4 LT |
1768 | spin_unlock_irqrestore(&(intf->seq_lock), |
1769 | flags); | |
1770 | goto out_err; | |
1771 | } | |
1772 | ||
25176ed6 CM |
1773 | ipmi_inc_stat(intf, sent_lan_commands); |
1774 | ||
c70d7499 CM |
1775 | /* |
1776 | * Store the sequence number in the message, | |
1777 | * so that when the send message response | |
1778 | * comes back we can start the timer. | |
1779 | */ | |
1da177e4 LT |
1780 | format_lan_msg(smi_msg, msg, lan_addr, |
1781 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1782 | ipmb_seq, source_lun); | |
1783 | ||
c70d7499 CM |
1784 | /* |
1785 | * Copy the message into the recv message data, so we | |
1786 | * can retransmit it later if necessary. | |
1787 | */ | |
1da177e4 LT |
1788 | memcpy(recv_msg->msg_data, smi_msg->data, |
1789 | smi_msg->data_size); | |
1790 | recv_msg->msg.data = recv_msg->msg_data; | |
1791 | recv_msg->msg.data_len = smi_msg->data_size; | |
1792 | ||
c70d7499 CM |
1793 | /* |
1794 | * We don't unlock until here, because we need | |
1795 | * to copy the completed message into the | |
1796 | * recv_msg before we release the lock. | |
1797 | * Otherwise, race conditions may bite us. I | |
1798 | * know that's pretty paranoid, but I prefer | |
1799 | * to be correct. | |
1800 | */ | |
1da177e4 LT |
1801 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
1802 | } | |
1803 | } else { | |
1804 | /* Unknown address type. */ | |
b2655f26 | 1805 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1806 | rv = -EINVAL; |
1807 | goto out_err; | |
1808 | } | |
1809 | ||
1810 | #ifdef DEBUG_MSGING | |
1811 | { | |
1812 | int m; | |
e8b33617 | 1813 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
1814 | printk(" %2.2x", smi_msg->data[m]); |
1815 | printk("\n"); | |
1816 | } | |
1817 | #endif | |
b2c03941 CM |
1818 | |
1819 | handlers->sender(intf->send_info, smi_msg, priority); | |
1820 | rcu_read_unlock(); | |
1da177e4 LT |
1821 | |
1822 | return 0; | |
1823 | ||
1824 | out_err: | |
b2c03941 | 1825 | rcu_read_unlock(); |
1da177e4 LT |
1826 | ipmi_free_smi_msg(smi_msg); |
1827 | ipmi_free_recv_msg(recv_msg); | |
1828 | return rv; | |
1829 | } | |
1830 | ||
c14979b9 CM |
1831 | static int check_addr(ipmi_smi_t intf, |
1832 | struct ipmi_addr *addr, | |
1833 | unsigned char *saddr, | |
1834 | unsigned char *lun) | |
1835 | { | |
1836 | if (addr->channel >= IPMI_MAX_CHANNELS) | |
1837 | return -EINVAL; | |
1838 | *lun = intf->channels[addr->channel].lun; | |
1839 | *saddr = intf->channels[addr->channel].address; | |
1840 | return 0; | |
1841 | } | |
1842 | ||
1da177e4 LT |
1843 | int ipmi_request_settime(ipmi_user_t user, |
1844 | struct ipmi_addr *addr, | |
1845 | long msgid, | |
1846 | struct kernel_ipmi_msg *msg, | |
1847 | void *user_msg_data, | |
1848 | int priority, | |
1849 | int retries, | |
1850 | unsigned int retry_time_ms) | |
1851 | { | |
c14979b9 CM |
1852 | unsigned char saddr, lun; |
1853 | int rv; | |
1854 | ||
8a3628d5 | 1855 | if (!user) |
56a55ec6 | 1856 | return -EINVAL; |
c14979b9 CM |
1857 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1858 | if (rv) | |
1859 | return rv; | |
1da177e4 LT |
1860 | return i_ipmi_request(user, |
1861 | user->intf, | |
1862 | addr, | |
1863 | msgid, | |
1864 | msg, | |
1865 | user_msg_data, | |
1866 | NULL, NULL, | |
1867 | priority, | |
c14979b9 CM |
1868 | saddr, |
1869 | lun, | |
1da177e4 LT |
1870 | retries, |
1871 | retry_time_ms); | |
1872 | } | |
c70d7499 | 1873 | EXPORT_SYMBOL(ipmi_request_settime); |
1da177e4 LT |
1874 | |
1875 | int ipmi_request_supply_msgs(ipmi_user_t user, | |
1876 | struct ipmi_addr *addr, | |
1877 | long msgid, | |
1878 | struct kernel_ipmi_msg *msg, | |
1879 | void *user_msg_data, | |
1880 | void *supplied_smi, | |
1881 | struct ipmi_recv_msg *supplied_recv, | |
1882 | int priority) | |
1883 | { | |
c14979b9 CM |
1884 | unsigned char saddr, lun; |
1885 | int rv; | |
1886 | ||
8a3628d5 | 1887 | if (!user) |
56a55ec6 | 1888 | return -EINVAL; |
c14979b9 CM |
1889 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1890 | if (rv) | |
1891 | return rv; | |
1da177e4 LT |
1892 | return i_ipmi_request(user, |
1893 | user->intf, | |
1894 | addr, | |
1895 | msgid, | |
1896 | msg, | |
1897 | user_msg_data, | |
1898 | supplied_smi, | |
1899 | supplied_recv, | |
1900 | priority, | |
c14979b9 CM |
1901 | saddr, |
1902 | lun, | |
1da177e4 LT |
1903 | -1, 0); |
1904 | } | |
c70d7499 | 1905 | EXPORT_SYMBOL(ipmi_request_supply_msgs); |
1da177e4 | 1906 | |
1aa16eea | 1907 | #ifdef CONFIG_PROC_FS |
07412736 | 1908 | static int smi_ipmb_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1909 | { |
07412736 | 1910 | ipmi_smi_t intf = m->private; |
c14979b9 | 1911 | int i; |
1da177e4 | 1912 | |
07412736 AD |
1913 | seq_printf(m, "%x", intf->channels[0].address); |
1914 | for (i = 1; i < IPMI_MAX_CHANNELS; i++) | |
1915 | seq_printf(m, " %x", intf->channels[i].address); | |
1916 | return seq_putc(m, '\n'); | |
1da177e4 LT |
1917 | } |
1918 | ||
07412736 | 1919 | static int smi_ipmb_proc_open(struct inode *inode, struct file *file) |
1da177e4 | 1920 | { |
07412736 AD |
1921 | return single_open(file, smi_ipmb_proc_show, PDE(inode)->data); |
1922 | } | |
1da177e4 | 1923 | |
07412736 AD |
1924 | static const struct file_operations smi_ipmb_proc_ops = { |
1925 | .open = smi_ipmb_proc_open, | |
1926 | .read = seq_read, | |
1927 | .llseek = seq_lseek, | |
1928 | .release = single_release, | |
1929 | }; | |
1930 | ||
1931 | static int smi_version_proc_show(struct seq_file *m, void *v) | |
1932 | { | |
1933 | ipmi_smi_t intf = m->private; | |
1934 | ||
1935 | return seq_printf(m, "%u.%u\n", | |
50c812b2 CM |
1936 | ipmi_version_major(&intf->bmc->id), |
1937 | ipmi_version_minor(&intf->bmc->id)); | |
1da177e4 LT |
1938 | } |
1939 | ||
07412736 | 1940 | static int smi_version_proc_open(struct inode *inode, struct file *file) |
1da177e4 | 1941 | { |
07412736 AD |
1942 | return single_open(file, smi_version_proc_show, PDE(inode)->data); |
1943 | } | |
1944 | ||
1945 | static const struct file_operations smi_version_proc_ops = { | |
1946 | .open = smi_version_proc_open, | |
1947 | .read = seq_read, | |
1948 | .llseek = seq_lseek, | |
1949 | .release = single_release, | |
1950 | }; | |
1da177e4 | 1951 | |
07412736 AD |
1952 | static int smi_stats_proc_show(struct seq_file *m, void *v) |
1953 | { | |
1954 | ipmi_smi_t intf = m->private; | |
1955 | ||
1956 | seq_printf(m, "sent_invalid_commands: %u\n", | |
b2655f26 | 1957 | ipmi_get_stat(intf, sent_invalid_commands)); |
07412736 | 1958 | seq_printf(m, "sent_local_commands: %u\n", |
b2655f26 | 1959 | ipmi_get_stat(intf, sent_local_commands)); |
07412736 | 1960 | seq_printf(m, "handled_local_responses: %u\n", |
b2655f26 | 1961 | ipmi_get_stat(intf, handled_local_responses)); |
07412736 | 1962 | seq_printf(m, "unhandled_local_responses: %u\n", |
b2655f26 | 1963 | ipmi_get_stat(intf, unhandled_local_responses)); |
07412736 | 1964 | seq_printf(m, "sent_ipmb_commands: %u\n", |
b2655f26 | 1965 | ipmi_get_stat(intf, sent_ipmb_commands)); |
07412736 | 1966 | seq_printf(m, "sent_ipmb_command_errs: %u\n", |
b2655f26 | 1967 | ipmi_get_stat(intf, sent_ipmb_command_errs)); |
07412736 | 1968 | seq_printf(m, "retransmitted_ipmb_commands: %u\n", |
b2655f26 | 1969 | ipmi_get_stat(intf, retransmitted_ipmb_commands)); |
07412736 | 1970 | seq_printf(m, "timed_out_ipmb_commands: %u\n", |
b2655f26 | 1971 | ipmi_get_stat(intf, timed_out_ipmb_commands)); |
07412736 | 1972 | seq_printf(m, "timed_out_ipmb_broadcasts: %u\n", |
b2655f26 | 1973 | ipmi_get_stat(intf, timed_out_ipmb_broadcasts)); |
07412736 | 1974 | seq_printf(m, "sent_ipmb_responses: %u\n", |
b2655f26 | 1975 | ipmi_get_stat(intf, sent_ipmb_responses)); |
07412736 | 1976 | seq_printf(m, "handled_ipmb_responses: %u\n", |
b2655f26 | 1977 | ipmi_get_stat(intf, handled_ipmb_responses)); |
07412736 | 1978 | seq_printf(m, "invalid_ipmb_responses: %u\n", |
b2655f26 | 1979 | ipmi_get_stat(intf, invalid_ipmb_responses)); |
07412736 | 1980 | seq_printf(m, "unhandled_ipmb_responses: %u\n", |
b2655f26 | 1981 | ipmi_get_stat(intf, unhandled_ipmb_responses)); |
07412736 | 1982 | seq_printf(m, "sent_lan_commands: %u\n", |
b2655f26 | 1983 | ipmi_get_stat(intf, sent_lan_commands)); |
07412736 | 1984 | seq_printf(m, "sent_lan_command_errs: %u\n", |
b2655f26 | 1985 | ipmi_get_stat(intf, sent_lan_command_errs)); |
07412736 | 1986 | seq_printf(m, "retransmitted_lan_commands: %u\n", |
b2655f26 | 1987 | ipmi_get_stat(intf, retransmitted_lan_commands)); |
07412736 | 1988 | seq_printf(m, "timed_out_lan_commands: %u\n", |
b2655f26 | 1989 | ipmi_get_stat(intf, timed_out_lan_commands)); |
07412736 | 1990 | seq_printf(m, "sent_lan_responses: %u\n", |
b2655f26 | 1991 | ipmi_get_stat(intf, sent_lan_responses)); |
07412736 | 1992 | seq_printf(m, "handled_lan_responses: %u\n", |
b2655f26 | 1993 | ipmi_get_stat(intf, handled_lan_responses)); |
07412736 | 1994 | seq_printf(m, "invalid_lan_responses: %u\n", |
b2655f26 | 1995 | ipmi_get_stat(intf, invalid_lan_responses)); |
07412736 | 1996 | seq_printf(m, "unhandled_lan_responses: %u\n", |
b2655f26 | 1997 | ipmi_get_stat(intf, unhandled_lan_responses)); |
07412736 | 1998 | seq_printf(m, "handled_commands: %u\n", |
b2655f26 | 1999 | ipmi_get_stat(intf, handled_commands)); |
07412736 | 2000 | seq_printf(m, "invalid_commands: %u\n", |
b2655f26 | 2001 | ipmi_get_stat(intf, invalid_commands)); |
07412736 | 2002 | seq_printf(m, "unhandled_commands: %u\n", |
b2655f26 | 2003 | ipmi_get_stat(intf, unhandled_commands)); |
07412736 | 2004 | seq_printf(m, "invalid_events: %u\n", |
b2655f26 | 2005 | ipmi_get_stat(intf, invalid_events)); |
07412736 | 2006 | seq_printf(m, "events: %u\n", |
b2655f26 | 2007 | ipmi_get_stat(intf, events)); |
07412736 | 2008 | seq_printf(m, "failed rexmit LAN msgs: %u\n", |
25176ed6 | 2009 | ipmi_get_stat(intf, dropped_rexmit_lan_commands)); |
07412736 | 2010 | seq_printf(m, "failed rexmit IPMB msgs: %u\n", |
25176ed6 | 2011 | ipmi_get_stat(intf, dropped_rexmit_ipmb_commands)); |
07412736 AD |
2012 | return 0; |
2013 | } | |
1da177e4 | 2014 | |
07412736 AD |
2015 | static int smi_stats_proc_open(struct inode *inode, struct file *file) |
2016 | { | |
2017 | return single_open(file, smi_stats_proc_show, PDE(inode)->data); | |
1da177e4 | 2018 | } |
07412736 AD |
2019 | |
2020 | static const struct file_operations smi_stats_proc_ops = { | |
2021 | .open = smi_stats_proc_open, | |
2022 | .read = seq_read, | |
2023 | .llseek = seq_lseek, | |
2024 | .release = single_release, | |
2025 | }; | |
1aa16eea | 2026 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2027 | |
2028 | int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, | |
07412736 | 2029 | const struct file_operations *proc_ops, |
99b76233 | 2030 | void *data) |
1da177e4 | 2031 | { |
1da177e4 | 2032 | int rv = 0; |
3b625943 CM |
2033 | #ifdef CONFIG_PROC_FS |
2034 | struct proc_dir_entry *file; | |
1da177e4 LT |
2035 | struct ipmi_proc_entry *entry; |
2036 | ||
2037 | /* Create a list element. */ | |
2038 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); | |
2039 | if (!entry) | |
2040 | return -ENOMEM; | |
2041 | entry->name = kmalloc(strlen(name)+1, GFP_KERNEL); | |
2042 | if (!entry->name) { | |
2043 | kfree(entry); | |
2044 | return -ENOMEM; | |
2045 | } | |
2046 | strcpy(entry->name, name); | |
2047 | ||
07412736 | 2048 | file = proc_create_data(name, 0, smi->proc_dir, proc_ops, data); |
1da177e4 LT |
2049 | if (!file) { |
2050 | kfree(entry->name); | |
2051 | kfree(entry); | |
2052 | rv = -ENOMEM; | |
2053 | } else { | |
ac019151 | 2054 | mutex_lock(&smi->proc_entry_lock); |
1da177e4 LT |
2055 | /* Stick it on the list. */ |
2056 | entry->next = smi->proc_entries; | |
2057 | smi->proc_entries = entry; | |
ac019151 | 2058 | mutex_unlock(&smi->proc_entry_lock); |
1da177e4 | 2059 | } |
3b625943 | 2060 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2061 | |
2062 | return rv; | |
2063 | } | |
c70d7499 | 2064 | EXPORT_SYMBOL(ipmi_smi_add_proc_entry); |
1da177e4 LT |
2065 | |
2066 | static int add_proc_entries(ipmi_smi_t smi, int num) | |
2067 | { | |
2068 | int rv = 0; | |
2069 | ||
3b625943 | 2070 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
2071 | sprintf(smi->proc_dir_name, "%d", num); |
2072 | smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); | |
2073 | if (!smi->proc_dir) | |
2074 | rv = -ENOMEM; | |
1da177e4 LT |
2075 | |
2076 | if (rv == 0) | |
2077 | rv = ipmi_smi_add_proc_entry(smi, "stats", | |
07412736 | 2078 | &smi_stats_proc_ops, |
99b76233 | 2079 | smi); |
1da177e4 LT |
2080 | |
2081 | if (rv == 0) | |
2082 | rv = ipmi_smi_add_proc_entry(smi, "ipmb", | |
07412736 | 2083 | &smi_ipmb_proc_ops, |
99b76233 | 2084 | smi); |
1da177e4 LT |
2085 | |
2086 | if (rv == 0) | |
2087 | rv = ipmi_smi_add_proc_entry(smi, "version", | |
07412736 | 2088 | &smi_version_proc_ops, |
99b76233 | 2089 | smi); |
3b625943 | 2090 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2091 | |
2092 | return rv; | |
2093 | } | |
2094 | ||
2095 | static void remove_proc_entries(ipmi_smi_t smi) | |
2096 | { | |
3b625943 | 2097 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
2098 | struct ipmi_proc_entry *entry; |
2099 | ||
ac019151 | 2100 | mutex_lock(&smi->proc_entry_lock); |
1da177e4 LT |
2101 | while (smi->proc_entries) { |
2102 | entry = smi->proc_entries; | |
2103 | smi->proc_entries = entry->next; | |
2104 | ||
2105 | remove_proc_entry(entry->name, smi->proc_dir); | |
2106 | kfree(entry->name); | |
2107 | kfree(entry); | |
2108 | } | |
ac019151 | 2109 | mutex_unlock(&smi->proc_entry_lock); |
1da177e4 | 2110 | remove_proc_entry(smi->proc_dir_name, proc_ipmi_root); |
3b625943 | 2111 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2112 | } |
2113 | ||
50c812b2 CM |
2114 | static int __find_bmc_guid(struct device *dev, void *data) |
2115 | { | |
2116 | unsigned char *id = data; | |
2117 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2118 | return memcmp(bmc->guid, id, 16) == 0; | |
2119 | } | |
2120 | ||
2121 | static struct bmc_device *ipmi_find_bmc_guid(struct device_driver *drv, | |
2122 | unsigned char *guid) | |
2123 | { | |
2124 | struct device *dev; | |
2125 | ||
2126 | dev = driver_find_device(drv, NULL, guid, __find_bmc_guid); | |
2127 | if (dev) | |
2128 | return dev_get_drvdata(dev); | |
2129 | else | |
2130 | return NULL; | |
2131 | } | |
2132 | ||
2133 | struct prod_dev_id { | |
2134 | unsigned int product_id; | |
2135 | unsigned char device_id; | |
2136 | }; | |
2137 | ||
2138 | static int __find_bmc_prod_dev_id(struct device *dev, void *data) | |
2139 | { | |
2140 | struct prod_dev_id *id = data; | |
2141 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2142 | ||
2143 | return (bmc->id.product_id == id->product_id | |
50c812b2 CM |
2144 | && bmc->id.device_id == id->device_id); |
2145 | } | |
2146 | ||
2147 | static struct bmc_device *ipmi_find_bmc_prod_dev_id( | |
2148 | struct device_driver *drv, | |
f0b55da0 | 2149 | unsigned int product_id, unsigned char device_id) |
50c812b2 CM |
2150 | { |
2151 | struct prod_dev_id id = { | |
2152 | .product_id = product_id, | |
2153 | .device_id = device_id, | |
2154 | }; | |
2155 | struct device *dev; | |
2156 | ||
2157 | dev = driver_find_device(drv, NULL, &id, __find_bmc_prod_dev_id); | |
2158 | if (dev) | |
2159 | return dev_get_drvdata(dev); | |
2160 | else | |
2161 | return NULL; | |
2162 | } | |
2163 | ||
2164 | static ssize_t device_id_show(struct device *dev, | |
2165 | struct device_attribute *attr, | |
2166 | char *buf) | |
2167 | { | |
2168 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2169 | ||
2170 | return snprintf(buf, 10, "%u\n", bmc->id.device_id); | |
2171 | } | |
2172 | ||
2173 | static ssize_t provides_dev_sdrs_show(struct device *dev, | |
2174 | struct device_attribute *attr, | |
2175 | char *buf) | |
2176 | { | |
2177 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2178 | ||
2179 | return snprintf(buf, 10, "%u\n", | |
7947d2cc | 2180 | (bmc->id.device_revision & 0x80) >> 7); |
50c812b2 CM |
2181 | } |
2182 | ||
2183 | static ssize_t revision_show(struct device *dev, struct device_attribute *attr, | |
2184 | char *buf) | |
2185 | { | |
2186 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2187 | ||
2188 | return snprintf(buf, 20, "%u\n", | |
7947d2cc | 2189 | bmc->id.device_revision & 0x0F); |
50c812b2 CM |
2190 | } |
2191 | ||
2192 | static ssize_t firmware_rev_show(struct device *dev, | |
2193 | struct device_attribute *attr, | |
2194 | char *buf) | |
2195 | { | |
2196 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2197 | ||
2198 | return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1, | |
2199 | bmc->id.firmware_revision_2); | |
2200 | } | |
2201 | ||
2202 | static ssize_t ipmi_version_show(struct device *dev, | |
2203 | struct device_attribute *attr, | |
2204 | char *buf) | |
2205 | { | |
2206 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2207 | ||
2208 | return snprintf(buf, 20, "%u.%u\n", | |
2209 | ipmi_version_major(&bmc->id), | |
2210 | ipmi_version_minor(&bmc->id)); | |
2211 | } | |
2212 | ||
2213 | static ssize_t add_dev_support_show(struct device *dev, | |
2214 | struct device_attribute *attr, | |
2215 | char *buf) | |
2216 | { | |
2217 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2218 | ||
2219 | return snprintf(buf, 10, "0x%02x\n", | |
2220 | bmc->id.additional_device_support); | |
2221 | } | |
2222 | ||
2223 | static ssize_t manufacturer_id_show(struct device *dev, | |
2224 | struct device_attribute *attr, | |
2225 | char *buf) | |
2226 | { | |
2227 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2228 | ||
2229 | return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id); | |
2230 | } | |
2231 | ||
2232 | static ssize_t product_id_show(struct device *dev, | |
2233 | struct device_attribute *attr, | |
2234 | char *buf) | |
2235 | { | |
2236 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2237 | ||
2238 | return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id); | |
2239 | } | |
2240 | ||
2241 | static ssize_t aux_firmware_rev_show(struct device *dev, | |
2242 | struct device_attribute *attr, | |
2243 | char *buf) | |
2244 | { | |
2245 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2246 | ||
2247 | return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n", | |
2248 | bmc->id.aux_firmware_revision[3], | |
2249 | bmc->id.aux_firmware_revision[2], | |
2250 | bmc->id.aux_firmware_revision[1], | |
2251 | bmc->id.aux_firmware_revision[0]); | |
2252 | } | |
2253 | ||
2254 | static ssize_t guid_show(struct device *dev, struct device_attribute *attr, | |
2255 | char *buf) | |
2256 | { | |
2257 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2258 | ||
2259 | return snprintf(buf, 100, "%Lx%Lx\n", | |
2260 | (long long) bmc->guid[0], | |
2261 | (long long) bmc->guid[8]); | |
2262 | } | |
2263 | ||
5e59393e | 2264 | static void remove_files(struct bmc_device *bmc) |
50c812b2 | 2265 | { |
f0b55da0 CM |
2266 | if (!bmc->dev) |
2267 | return; | |
2268 | ||
50c812b2 CM |
2269 | device_remove_file(&bmc->dev->dev, |
2270 | &bmc->device_id_attr); | |
2271 | device_remove_file(&bmc->dev->dev, | |
2272 | &bmc->provides_dev_sdrs_attr); | |
2273 | device_remove_file(&bmc->dev->dev, | |
2274 | &bmc->revision_attr); | |
2275 | device_remove_file(&bmc->dev->dev, | |
2276 | &bmc->firmware_rev_attr); | |
2277 | device_remove_file(&bmc->dev->dev, | |
2278 | &bmc->version_attr); | |
2279 | device_remove_file(&bmc->dev->dev, | |
2280 | &bmc->add_dev_support_attr); | |
2281 | device_remove_file(&bmc->dev->dev, | |
2282 | &bmc->manufacturer_id_attr); | |
2283 | device_remove_file(&bmc->dev->dev, | |
2284 | &bmc->product_id_attr); | |
5e59393e | 2285 | |
50c812b2 CM |
2286 | if (bmc->id.aux_firmware_revision_set) |
2287 | device_remove_file(&bmc->dev->dev, | |
2288 | &bmc->aux_firmware_rev_attr); | |
2289 | if (bmc->guid_set) | |
2290 | device_remove_file(&bmc->dev->dev, | |
2291 | &bmc->guid_attr); | |
5e59393e JG |
2292 | } |
2293 | ||
2294 | static void | |
2295 | cleanup_bmc_device(struct kref *ref) | |
2296 | { | |
2297 | struct bmc_device *bmc; | |
2298 | ||
2299 | bmc = container_of(ref, struct bmc_device, refcount); | |
2300 | ||
2301 | remove_files(bmc); | |
1d5636cc | 2302 | platform_device_unregister(bmc->dev); |
50c812b2 CM |
2303 | kfree(bmc); |
2304 | } | |
2305 | ||
2306 | static void ipmi_bmc_unregister(ipmi_smi_t intf) | |
2307 | { | |
2308 | struct bmc_device *bmc = intf->bmc; | |
2309 | ||
759643b8 CM |
2310 | if (intf->sysfs_name) { |
2311 | sysfs_remove_link(&intf->si_dev->kobj, intf->sysfs_name); | |
2312 | kfree(intf->sysfs_name); | |
2313 | intf->sysfs_name = NULL; | |
2314 | } | |
50c812b2 CM |
2315 | if (intf->my_dev_name) { |
2316 | sysfs_remove_link(&bmc->dev->dev.kobj, intf->my_dev_name); | |
2317 | kfree(intf->my_dev_name); | |
2318 | intf->my_dev_name = NULL; | |
2319 | } | |
2320 | ||
2321 | mutex_lock(&ipmidriver_mutex); | |
2322 | kref_put(&bmc->refcount, cleanup_bmc_device); | |
f0b55da0 | 2323 | intf->bmc = NULL; |
50c812b2 CM |
2324 | mutex_unlock(&ipmidriver_mutex); |
2325 | } | |
2326 | ||
5e59393e JG |
2327 | static int create_files(struct bmc_device *bmc) |
2328 | { | |
2329 | int err; | |
2330 | ||
f0b55da0 | 2331 | bmc->device_id_attr.attr.name = "device_id"; |
f0b55da0 CM |
2332 | bmc->device_id_attr.attr.mode = S_IRUGO; |
2333 | bmc->device_id_attr.show = device_id_show; | |
c7df670b | 2334 | sysfs_attr_init(&bmc->device_id_attr.attr); |
f0b55da0 CM |
2335 | |
2336 | bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs"; | |
f0b55da0 CM |
2337 | bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO; |
2338 | bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show; | |
c7df670b | 2339 | sysfs_attr_init(&bmc->provides_dev_sdrs_attr.attr); |
f0b55da0 CM |
2340 | |
2341 | bmc->revision_attr.attr.name = "revision"; | |
f0b55da0 CM |
2342 | bmc->revision_attr.attr.mode = S_IRUGO; |
2343 | bmc->revision_attr.show = revision_show; | |
c7df670b | 2344 | sysfs_attr_init(&bmc->revision_attr.attr); |
f0b55da0 CM |
2345 | |
2346 | bmc->firmware_rev_attr.attr.name = "firmware_revision"; | |
f0b55da0 CM |
2347 | bmc->firmware_rev_attr.attr.mode = S_IRUGO; |
2348 | bmc->firmware_rev_attr.show = firmware_rev_show; | |
c7df670b | 2349 | sysfs_attr_init(&bmc->firmware_rev_attr.attr); |
f0b55da0 CM |
2350 | |
2351 | bmc->version_attr.attr.name = "ipmi_version"; | |
f0b55da0 CM |
2352 | bmc->version_attr.attr.mode = S_IRUGO; |
2353 | bmc->version_attr.show = ipmi_version_show; | |
c7df670b | 2354 | sysfs_attr_init(&bmc->version_attr.attr); |
f0b55da0 CM |
2355 | |
2356 | bmc->add_dev_support_attr.attr.name = "additional_device_support"; | |
f0b55da0 CM |
2357 | bmc->add_dev_support_attr.attr.mode = S_IRUGO; |
2358 | bmc->add_dev_support_attr.show = add_dev_support_show; | |
c7df670b | 2359 | sysfs_attr_init(&bmc->add_dev_support_attr.attr); |
f0b55da0 CM |
2360 | |
2361 | bmc->manufacturer_id_attr.attr.name = "manufacturer_id"; | |
f0b55da0 CM |
2362 | bmc->manufacturer_id_attr.attr.mode = S_IRUGO; |
2363 | bmc->manufacturer_id_attr.show = manufacturer_id_show; | |
c7df670b | 2364 | sysfs_attr_init(&bmc->manufacturer_id_attr.attr); |
f0b55da0 CM |
2365 | |
2366 | bmc->product_id_attr.attr.name = "product_id"; | |
f0b55da0 CM |
2367 | bmc->product_id_attr.attr.mode = S_IRUGO; |
2368 | bmc->product_id_attr.show = product_id_show; | |
c7df670b | 2369 | sysfs_attr_init(&bmc->product_id_attr.attr); |
f0b55da0 CM |
2370 | |
2371 | bmc->guid_attr.attr.name = "guid"; | |
f0b55da0 CM |
2372 | bmc->guid_attr.attr.mode = S_IRUGO; |
2373 | bmc->guid_attr.show = guid_show; | |
c7df670b | 2374 | sysfs_attr_init(&bmc->guid_attr.attr); |
f0b55da0 CM |
2375 | |
2376 | bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision"; | |
f0b55da0 CM |
2377 | bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO; |
2378 | bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show; | |
c7df670b | 2379 | sysfs_attr_init(&bmc->aux_firmware_rev_attr.attr); |
f0b55da0 | 2380 | |
5e59393e JG |
2381 | err = device_create_file(&bmc->dev->dev, |
2382 | &bmc->device_id_attr); | |
c70d7499 CM |
2383 | if (err) |
2384 | goto out; | |
5e59393e JG |
2385 | err = device_create_file(&bmc->dev->dev, |
2386 | &bmc->provides_dev_sdrs_attr); | |
c70d7499 CM |
2387 | if (err) |
2388 | goto out_devid; | |
5e59393e JG |
2389 | err = device_create_file(&bmc->dev->dev, |
2390 | &bmc->revision_attr); | |
c70d7499 CM |
2391 | if (err) |
2392 | goto out_sdrs; | |
5e59393e JG |
2393 | err = device_create_file(&bmc->dev->dev, |
2394 | &bmc->firmware_rev_attr); | |
c70d7499 CM |
2395 | if (err) |
2396 | goto out_rev; | |
5e59393e JG |
2397 | err = device_create_file(&bmc->dev->dev, |
2398 | &bmc->version_attr); | |
c70d7499 CM |
2399 | if (err) |
2400 | goto out_firm; | |
5e59393e JG |
2401 | err = device_create_file(&bmc->dev->dev, |
2402 | &bmc->add_dev_support_attr); | |
c70d7499 CM |
2403 | if (err) |
2404 | goto out_version; | |
5e59393e JG |
2405 | err = device_create_file(&bmc->dev->dev, |
2406 | &bmc->manufacturer_id_attr); | |
c70d7499 CM |
2407 | if (err) |
2408 | goto out_add_dev; | |
5e59393e JG |
2409 | err = device_create_file(&bmc->dev->dev, |
2410 | &bmc->product_id_attr); | |
c70d7499 CM |
2411 | if (err) |
2412 | goto out_manu; | |
5e59393e JG |
2413 | if (bmc->id.aux_firmware_revision_set) { |
2414 | err = device_create_file(&bmc->dev->dev, | |
2415 | &bmc->aux_firmware_rev_attr); | |
c70d7499 CM |
2416 | if (err) |
2417 | goto out_prod_id; | |
5e59393e JG |
2418 | } |
2419 | if (bmc->guid_set) { | |
2420 | err = device_create_file(&bmc->dev->dev, | |
2421 | &bmc->guid_attr); | |
c70d7499 CM |
2422 | if (err) |
2423 | goto out_aux_firm; | |
5e59393e JG |
2424 | } |
2425 | ||
2426 | return 0; | |
2427 | ||
2428 | out_aux_firm: | |
2429 | if (bmc->id.aux_firmware_revision_set) | |
2430 | device_remove_file(&bmc->dev->dev, | |
2431 | &bmc->aux_firmware_rev_attr); | |
2432 | out_prod_id: | |
2433 | device_remove_file(&bmc->dev->dev, | |
2434 | &bmc->product_id_attr); | |
2435 | out_manu: | |
2436 | device_remove_file(&bmc->dev->dev, | |
2437 | &bmc->manufacturer_id_attr); | |
2438 | out_add_dev: | |
2439 | device_remove_file(&bmc->dev->dev, | |
2440 | &bmc->add_dev_support_attr); | |
2441 | out_version: | |
2442 | device_remove_file(&bmc->dev->dev, | |
2443 | &bmc->version_attr); | |
2444 | out_firm: | |
2445 | device_remove_file(&bmc->dev->dev, | |
2446 | &bmc->firmware_rev_attr); | |
2447 | out_rev: | |
2448 | device_remove_file(&bmc->dev->dev, | |
2449 | &bmc->revision_attr); | |
2450 | out_sdrs: | |
2451 | device_remove_file(&bmc->dev->dev, | |
2452 | &bmc->provides_dev_sdrs_attr); | |
2453 | out_devid: | |
2454 | device_remove_file(&bmc->dev->dev, | |
2455 | &bmc->device_id_attr); | |
2456 | out: | |
2457 | return err; | |
2458 | } | |
2459 | ||
759643b8 CM |
2460 | static int ipmi_bmc_register(ipmi_smi_t intf, int ifnum, |
2461 | const char *sysfs_name) | |
50c812b2 CM |
2462 | { |
2463 | int rv; | |
2464 | struct bmc_device *bmc = intf->bmc; | |
2465 | struct bmc_device *old_bmc; | |
2466 | int size; | |
2467 | char dummy[1]; | |
2468 | ||
2469 | mutex_lock(&ipmidriver_mutex); | |
2470 | ||
2471 | /* | |
2472 | * Try to find if there is an bmc_device struct | |
2473 | * representing the interfaced BMC already | |
2474 | */ | |
2475 | if (bmc->guid_set) | |
fe2d5ffc | 2476 | old_bmc = ipmi_find_bmc_guid(&ipmidriver.driver, bmc->guid); |
50c812b2 | 2477 | else |
fe2d5ffc | 2478 | old_bmc = ipmi_find_bmc_prod_dev_id(&ipmidriver.driver, |
50c812b2 CM |
2479 | bmc->id.product_id, |
2480 | bmc->id.device_id); | |
2481 | ||
2482 | /* | |
2483 | * If there is already an bmc_device, free the new one, | |
2484 | * otherwise register the new BMC device | |
2485 | */ | |
2486 | if (old_bmc) { | |
2487 | kfree(bmc); | |
2488 | intf->bmc = old_bmc; | |
2489 | bmc = old_bmc; | |
2490 | ||
2491 | kref_get(&bmc->refcount); | |
2492 | mutex_unlock(&ipmidriver_mutex); | |
2493 | ||
2494 | printk(KERN_INFO | |
2495 | "ipmi: interfacing existing BMC (man_id: 0x%6.6x," | |
2496 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
2497 | bmc->id.manufacturer_id, | |
2498 | bmc->id.product_id, | |
2499 | bmc->id.device_id); | |
2500 | } else { | |
f0b55da0 CM |
2501 | char name[14]; |
2502 | unsigned char orig_dev_id = bmc->id.device_id; | |
2503 | int warn_printed = 0; | |
2504 | ||
2505 | snprintf(name, sizeof(name), | |
2506 | "ipmi_bmc.%4.4x", bmc->id.product_id); | |
2507 | ||
fe2d5ffc | 2508 | while (ipmi_find_bmc_prod_dev_id(&ipmidriver.driver, |
f0b55da0 | 2509 | bmc->id.product_id, |
1d5636cc | 2510 | bmc->id.device_id)) { |
f0b55da0 CM |
2511 | if (!warn_printed) { |
2512 | printk(KERN_WARNING PFX | |
2513 | "This machine has two different BMCs" | |
2514 | " with the same product id and device" | |
2515 | " id. This is an error in the" | |
2516 | " firmware, but incrementing the" | |
2517 | " device id to work around the problem." | |
2518 | " Prod ID = 0x%x, Dev ID = 0x%x\n", | |
2519 | bmc->id.product_id, bmc->id.device_id); | |
2520 | warn_printed = 1; | |
2521 | } | |
2522 | bmc->id.device_id++; /* Wraps at 255 */ | |
2523 | if (bmc->id.device_id == orig_dev_id) { | |
2524 | printk(KERN_ERR PFX | |
2525 | "Out of device ids!\n"); | |
2526 | break; | |
2527 | } | |
2528 | } | |
2529 | ||
2530 | bmc->dev = platform_device_alloc(name, bmc->id.device_id); | |
8a3628d5 | 2531 | if (!bmc->dev) { |
f0b55da0 | 2532 | mutex_unlock(&ipmidriver_mutex); |
50c812b2 CM |
2533 | printk(KERN_ERR |
2534 | "ipmi_msghandler:" | |
2535 | " Unable to allocate platform device\n"); | |
2536 | return -ENOMEM; | |
2537 | } | |
fe2d5ffc | 2538 | bmc->dev->dev.driver = &ipmidriver.driver; |
50c812b2 CM |
2539 | dev_set_drvdata(&bmc->dev->dev, bmc); |
2540 | kref_init(&bmc->refcount); | |
2541 | ||
b48f5457 | 2542 | rv = platform_device_add(bmc->dev); |
50c812b2 CM |
2543 | mutex_unlock(&ipmidriver_mutex); |
2544 | if (rv) { | |
f0b55da0 CM |
2545 | platform_device_put(bmc->dev); |
2546 | bmc->dev = NULL; | |
50c812b2 CM |
2547 | printk(KERN_ERR |
2548 | "ipmi_msghandler:" | |
2549 | " Unable to register bmc device: %d\n", | |
2550 | rv); | |
c70d7499 CM |
2551 | /* |
2552 | * Don't go to out_err, you can only do that if | |
2553 | * the device is registered already. | |
2554 | */ | |
50c812b2 CM |
2555 | return rv; |
2556 | } | |
2557 | ||
5e59393e JG |
2558 | rv = create_files(bmc); |
2559 | if (rv) { | |
2560 | mutex_lock(&ipmidriver_mutex); | |
2561 | platform_device_unregister(bmc->dev); | |
2562 | mutex_unlock(&ipmidriver_mutex); | |
2563 | ||
2564 | return rv; | |
2565 | } | |
50c812b2 | 2566 | |
279fbd0c MS |
2567 | dev_info(intf->si_dev, "Found new BMC (man_id: 0x%6.6x, " |
2568 | "prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
2569 | bmc->id.manufacturer_id, | |
2570 | bmc->id.product_id, | |
2571 | bmc->id.device_id); | |
50c812b2 CM |
2572 | } |
2573 | ||
2574 | /* | |
2575 | * create symlink from system interface device to bmc device | |
2576 | * and back. | |
2577 | */ | |
759643b8 CM |
2578 | intf->sysfs_name = kstrdup(sysfs_name, GFP_KERNEL); |
2579 | if (!intf->sysfs_name) { | |
2580 | rv = -ENOMEM; | |
2581 | printk(KERN_ERR | |
2582 | "ipmi_msghandler: allocate link to BMC: %d\n", | |
2583 | rv); | |
2584 | goto out_err; | |
2585 | } | |
2586 | ||
50c812b2 | 2587 | rv = sysfs_create_link(&intf->si_dev->kobj, |
759643b8 | 2588 | &bmc->dev->dev.kobj, intf->sysfs_name); |
50c812b2 | 2589 | if (rv) { |
759643b8 CM |
2590 | kfree(intf->sysfs_name); |
2591 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2592 | printk(KERN_ERR |
2593 | "ipmi_msghandler: Unable to create bmc symlink: %d\n", | |
2594 | rv); | |
2595 | goto out_err; | |
2596 | } | |
2597 | ||
759643b8 | 2598 | size = snprintf(dummy, 0, "ipmi%d", ifnum); |
50c812b2 CM |
2599 | intf->my_dev_name = kmalloc(size+1, GFP_KERNEL); |
2600 | if (!intf->my_dev_name) { | |
759643b8 CM |
2601 | kfree(intf->sysfs_name); |
2602 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2603 | rv = -ENOMEM; |
2604 | printk(KERN_ERR | |
2605 | "ipmi_msghandler: allocate link from BMC: %d\n", | |
2606 | rv); | |
2607 | goto out_err; | |
2608 | } | |
759643b8 | 2609 | snprintf(intf->my_dev_name, size+1, "ipmi%d", ifnum); |
50c812b2 CM |
2610 | |
2611 | rv = sysfs_create_link(&bmc->dev->dev.kobj, &intf->si_dev->kobj, | |
2612 | intf->my_dev_name); | |
2613 | if (rv) { | |
759643b8 CM |
2614 | kfree(intf->sysfs_name); |
2615 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2616 | kfree(intf->my_dev_name); |
2617 | intf->my_dev_name = NULL; | |
2618 | printk(KERN_ERR | |
2619 | "ipmi_msghandler:" | |
2620 | " Unable to create symlink to bmc: %d\n", | |
2621 | rv); | |
2622 | goto out_err; | |
2623 | } | |
2624 | ||
2625 | return 0; | |
2626 | ||
2627 | out_err: | |
2628 | ipmi_bmc_unregister(intf); | |
2629 | return rv; | |
2630 | } | |
2631 | ||
2632 | static int | |
2633 | send_guid_cmd(ipmi_smi_t intf, int chan) | |
2634 | { | |
2635 | struct kernel_ipmi_msg msg; | |
2636 | struct ipmi_system_interface_addr si; | |
2637 | ||
2638 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2639 | si.channel = IPMI_BMC_CHANNEL; | |
2640 | si.lun = 0; | |
2641 | ||
2642 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2643 | msg.cmd = IPMI_GET_DEVICE_GUID_CMD; | |
2644 | msg.data = NULL; | |
2645 | msg.data_len = 0; | |
2646 | return i_ipmi_request(NULL, | |
2647 | intf, | |
2648 | (struct ipmi_addr *) &si, | |
2649 | 0, | |
2650 | &msg, | |
2651 | intf, | |
2652 | NULL, | |
2653 | NULL, | |
2654 | 0, | |
2655 | intf->channels[0].address, | |
2656 | intf->channels[0].lun, | |
2657 | -1, 0); | |
2658 | } | |
2659 | ||
2660 | static void | |
2661 | guid_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) | |
2662 | { | |
2663 | if ((msg->addr.addr_type != IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
2664 | || (msg->msg.netfn != IPMI_NETFN_APP_RESPONSE) | |
2665 | || (msg->msg.cmd != IPMI_GET_DEVICE_GUID_CMD)) | |
2666 | /* Not for me */ | |
2667 | return; | |
2668 | ||
2669 | if (msg->msg.data[0] != 0) { | |
2670 | /* Error from getting the GUID, the BMC doesn't have one. */ | |
2671 | intf->bmc->guid_set = 0; | |
2672 | goto out; | |
2673 | } | |
2674 | ||
2675 | if (msg->msg.data_len < 17) { | |
2676 | intf->bmc->guid_set = 0; | |
2677 | printk(KERN_WARNING PFX | |
2678 | "guid_handler: The GUID response from the BMC was too" | |
2679 | " short, it was %d but should have been 17. Assuming" | |
2680 | " GUID is not available.\n", | |
2681 | msg->msg.data_len); | |
2682 | goto out; | |
2683 | } | |
2684 | ||
2685 | memcpy(intf->bmc->guid, msg->msg.data, 16); | |
2686 | intf->bmc->guid_set = 1; | |
2687 | out: | |
2688 | wake_up(&intf->waitq); | |
2689 | } | |
2690 | ||
2691 | static void | |
2692 | get_guid(ipmi_smi_t intf) | |
2693 | { | |
2694 | int rv; | |
2695 | ||
2696 | intf->bmc->guid_set = 0x2; | |
2697 | intf->null_user_handler = guid_handler; | |
2698 | rv = send_guid_cmd(intf, 0); | |
2699 | if (rv) | |
2700 | /* Send failed, no GUID available. */ | |
2701 | intf->bmc->guid_set = 0; | |
2702 | wait_event(intf->waitq, intf->bmc->guid_set != 2); | |
2703 | intf->null_user_handler = NULL; | |
2704 | } | |
2705 | ||
1da177e4 LT |
2706 | static int |
2707 | send_channel_info_cmd(ipmi_smi_t intf, int chan) | |
2708 | { | |
2709 | struct kernel_ipmi_msg msg; | |
2710 | unsigned char data[1]; | |
2711 | struct ipmi_system_interface_addr si; | |
2712 | ||
2713 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2714 | si.channel = IPMI_BMC_CHANNEL; | |
2715 | si.lun = 0; | |
2716 | ||
2717 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2718 | msg.cmd = IPMI_GET_CHANNEL_INFO_CMD; | |
2719 | msg.data = data; | |
2720 | msg.data_len = 1; | |
2721 | data[0] = chan; | |
2722 | return i_ipmi_request(NULL, | |
2723 | intf, | |
2724 | (struct ipmi_addr *) &si, | |
2725 | 0, | |
2726 | &msg, | |
56a55ec6 | 2727 | intf, |
1da177e4 LT |
2728 | NULL, |
2729 | NULL, | |
2730 | 0, | |
c14979b9 CM |
2731 | intf->channels[0].address, |
2732 | intf->channels[0].lun, | |
1da177e4 LT |
2733 | -1, 0); |
2734 | } | |
2735 | ||
2736 | static void | |
56a55ec6 | 2737 | channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 LT |
2738 | { |
2739 | int rv = 0; | |
2740 | int chan; | |
2741 | ||
56a55ec6 CM |
2742 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
2743 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
c70d7499 | 2744 | && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD)) { |
1da177e4 | 2745 | /* It's the one we want */ |
56a55ec6 | 2746 | if (msg->msg.data[0] != 0) { |
1da177e4 LT |
2747 | /* Got an error from the channel, just go on. */ |
2748 | ||
56a55ec6 | 2749 | if (msg->msg.data[0] == IPMI_INVALID_COMMAND_ERR) { |
c70d7499 CM |
2750 | /* |
2751 | * If the MC does not support this | |
2752 | * command, that is legal. We just | |
2753 | * assume it has one IPMB at channel | |
2754 | * zero. | |
2755 | */ | |
1da177e4 LT |
2756 | intf->channels[0].medium |
2757 | = IPMI_CHANNEL_MEDIUM_IPMB; | |
2758 | intf->channels[0].protocol | |
2759 | = IPMI_CHANNEL_PROTOCOL_IPMB; | |
2760 | rv = -ENOSYS; | |
2761 | ||
2762 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2763 | wake_up(&intf->waitq); | |
2764 | goto out; | |
2765 | } | |
2766 | goto next_channel; | |
2767 | } | |
56a55ec6 | 2768 | if (msg->msg.data_len < 4) { |
1da177e4 LT |
2769 | /* Message not big enough, just go on. */ |
2770 | goto next_channel; | |
2771 | } | |
2772 | chan = intf->curr_channel; | |
56a55ec6 CM |
2773 | intf->channels[chan].medium = msg->msg.data[2] & 0x7f; |
2774 | intf->channels[chan].protocol = msg->msg.data[3] & 0x1f; | |
1da177e4 | 2775 | |
c70d7499 | 2776 | next_channel: |
1da177e4 LT |
2777 | intf->curr_channel++; |
2778 | if (intf->curr_channel >= IPMI_MAX_CHANNELS) | |
2779 | wake_up(&intf->waitq); | |
2780 | else | |
2781 | rv = send_channel_info_cmd(intf, intf->curr_channel); | |
2782 | ||
2783 | if (rv) { | |
2784 | /* Got an error somehow, just give up. */ | |
2785 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2786 | wake_up(&intf->waitq); | |
2787 | ||
2788 | printk(KERN_WARNING PFX | |
2789 | "Error sending channel information: %d\n", | |
2790 | rv); | |
2791 | } | |
2792 | } | |
2793 | out: | |
2794 | return; | |
2795 | } | |
2796 | ||
fcfa4724 CM |
2797 | void ipmi_poll_interface(ipmi_user_t user) |
2798 | { | |
2799 | ipmi_smi_t intf = user->intf; | |
2800 | ||
2801 | if (intf->handlers->poll) | |
2802 | intf->handlers->poll(intf->send_info); | |
7adf579c CM |
2803 | |
2804 | /* In case something came in */ | |
2805 | handle_new_recv_msgs(intf); | |
fcfa4724 | 2806 | } |
c70d7499 | 2807 | EXPORT_SYMBOL(ipmi_poll_interface); |
fcfa4724 | 2808 | |
1da177e4 LT |
2809 | int ipmi_register_smi(struct ipmi_smi_handlers *handlers, |
2810 | void *send_info, | |
50c812b2 CM |
2811 | struct ipmi_device_id *device_id, |
2812 | struct device *si_dev, | |
759643b8 | 2813 | const char *sysfs_name, |
453823ba | 2814 | unsigned char slave_addr) |
1da177e4 LT |
2815 | { |
2816 | int i, j; | |
2817 | int rv; | |
393d2cc3 | 2818 | ipmi_smi_t intf; |
bca0324d | 2819 | ipmi_smi_t tintf; |
bca0324d | 2820 | struct list_head *link; |
1da177e4 | 2821 | |
c70d7499 CM |
2822 | /* |
2823 | * Make sure the driver is actually initialized, this handles | |
2824 | * problems with initialization order. | |
2825 | */ | |
1da177e4 LT |
2826 | if (!initialized) { |
2827 | rv = ipmi_init_msghandler(); | |
2828 | if (rv) | |
2829 | return rv; | |
c70d7499 CM |
2830 | /* |
2831 | * The init code doesn't return an error if it was turned | |
2832 | * off, but it won't initialize. Check that. | |
2833 | */ | |
1da177e4 LT |
2834 | if (!initialized) |
2835 | return -ENODEV; | |
2836 | } | |
2837 | ||
dd00cc48 | 2838 | intf = kzalloc(sizeof(*intf), GFP_KERNEL); |
393d2cc3 | 2839 | if (!intf) |
1da177e4 | 2840 | return -ENOMEM; |
b2c03941 CM |
2841 | |
2842 | intf->ipmi_version_major = ipmi_version_major(device_id); | |
2843 | intf->ipmi_version_minor = ipmi_version_minor(device_id); | |
2844 | ||
50c812b2 CM |
2845 | intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL); |
2846 | if (!intf->bmc) { | |
2847 | kfree(intf); | |
2848 | return -ENOMEM; | |
2849 | } | |
bca0324d | 2850 | intf->intf_num = -1; /* Mark it invalid for now. */ |
393d2cc3 | 2851 | kref_init(&intf->refcount); |
50c812b2 CM |
2852 | intf->bmc->id = *device_id; |
2853 | intf->si_dev = si_dev; | |
393d2cc3 CM |
2854 | for (j = 0; j < IPMI_MAX_CHANNELS; j++) { |
2855 | intf->channels[j].address = IPMI_BMC_SLAVE_ADDR; | |
2856 | intf->channels[j].lun = 2; | |
2857 | } | |
2858 | if (slave_addr != 0) | |
2859 | intf->channels[0].address = slave_addr; | |
2860 | INIT_LIST_HEAD(&intf->users); | |
2861 | intf->handlers = handlers; | |
2862 | intf->send_info = send_info; | |
2863 | spin_lock_init(&intf->seq_lock); | |
2864 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) { | |
2865 | intf->seq_table[j].inuse = 0; | |
2866 | intf->seq_table[j].seqid = 0; | |
2867 | } | |
2868 | intf->curr_seq = 0; | |
2869 | #ifdef CONFIG_PROC_FS | |
ac019151 | 2870 | mutex_init(&intf->proc_entry_lock); |
393d2cc3 CM |
2871 | #endif |
2872 | spin_lock_init(&intf->waiting_msgs_lock); | |
2873 | INIT_LIST_HEAD(&intf->waiting_msgs); | |
7adf579c CM |
2874 | tasklet_init(&intf->recv_tasklet, |
2875 | smi_recv_tasklet, | |
2876 | (unsigned long) intf); | |
2877 | atomic_set(&intf->watchdog_pretimeouts_to_deliver, 0); | |
393d2cc3 CM |
2878 | spin_lock_init(&intf->events_lock); |
2879 | INIT_LIST_HEAD(&intf->waiting_events); | |
2880 | intf->waiting_events_count = 0; | |
d6dfd131 | 2881 | mutex_init(&intf->cmd_rcvrs_mutex); |
b9675136 | 2882 | spin_lock_init(&intf->maintenance_mode_lock); |
393d2cc3 CM |
2883 | INIT_LIST_HEAD(&intf->cmd_rcvrs); |
2884 | init_waitqueue_head(&intf->waitq); | |
b2655f26 KB |
2885 | for (i = 0; i < IPMI_NUM_STATS; i++) |
2886 | atomic_set(&intf->stats[i], 0); | |
393d2cc3 | 2887 | |
393d2cc3 | 2888 | intf->proc_dir = NULL; |
1da177e4 | 2889 | |
b2c03941 | 2890 | mutex_lock(&smi_watchers_mutex); |
bca0324d CM |
2891 | mutex_lock(&ipmi_interfaces_mutex); |
2892 | /* Look for a hole in the numbers. */ | |
2893 | i = 0; | |
2894 | link = &ipmi_interfaces; | |
2895 | list_for_each_entry_rcu(tintf, &ipmi_interfaces, link) { | |
2896 | if (tintf->intf_num != i) { | |
2897 | link = &tintf->link; | |
1da177e4 LT |
2898 | break; |
2899 | } | |
bca0324d | 2900 | i++; |
1da177e4 | 2901 | } |
bca0324d CM |
2902 | /* Add the new interface in numeric order. */ |
2903 | if (i == 0) | |
2904 | list_add_rcu(&intf->link, &ipmi_interfaces); | |
2905 | else | |
2906 | list_add_tail_rcu(&intf->link, link); | |
1da177e4 | 2907 | |
453823ba CM |
2908 | rv = handlers->start_processing(send_info, intf); |
2909 | if (rv) | |
2910 | goto out; | |
1da177e4 | 2911 | |
50c812b2 CM |
2912 | get_guid(intf); |
2913 | ||
b2c03941 | 2914 | if ((intf->ipmi_version_major > 1) |
c70d7499 CM |
2915 | || ((intf->ipmi_version_major == 1) |
2916 | && (intf->ipmi_version_minor >= 5))) { | |
2917 | /* | |
2918 | * Start scanning the channels to see what is | |
2919 | * available. | |
2920 | */ | |
393d2cc3 CM |
2921 | intf->null_user_handler = channel_handler; |
2922 | intf->curr_channel = 0; | |
2923 | rv = send_channel_info_cmd(intf, 0); | |
2924 | if (rv) | |
2925 | goto out; | |
1da177e4 | 2926 | |
393d2cc3 CM |
2927 | /* Wait for the channel info to be read. */ |
2928 | wait_event(intf->waitq, | |
2929 | intf->curr_channel >= IPMI_MAX_CHANNELS); | |
50c812b2 | 2930 | intf->null_user_handler = NULL; |
393d2cc3 CM |
2931 | } else { |
2932 | /* Assume a single IPMB channel at zero. */ | |
2933 | intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; | |
2934 | intf->channels[0].protocol = IPMI_CHANNEL_PROTOCOL_IPMB; | |
9a2845c4 | 2935 | intf->curr_channel = IPMI_MAX_CHANNELS; |
1da177e4 LT |
2936 | } |
2937 | ||
393d2cc3 CM |
2938 | if (rv == 0) |
2939 | rv = add_proc_entries(intf, i); | |
1da177e4 | 2940 | |
759643b8 | 2941 | rv = ipmi_bmc_register(intf, i, sysfs_name); |
50c812b2 | 2942 | |
393d2cc3 | 2943 | out: |
1da177e4 | 2944 | if (rv) { |
393d2cc3 CM |
2945 | if (intf->proc_dir) |
2946 | remove_proc_entries(intf); | |
b2c03941 | 2947 | intf->handlers = NULL; |
bca0324d CM |
2948 | list_del_rcu(&intf->link); |
2949 | mutex_unlock(&ipmi_interfaces_mutex); | |
b2c03941 | 2950 | mutex_unlock(&smi_watchers_mutex); |
bca0324d | 2951 | synchronize_rcu(); |
393d2cc3 | 2952 | kref_put(&intf->refcount, intf_free); |
393d2cc3 | 2953 | } else { |
78ba2faf CM |
2954 | /* |
2955 | * Keep memory order straight for RCU readers. Make | |
2956 | * sure everything else is committed to memory before | |
2957 | * setting intf_num to mark the interface valid. | |
2958 | */ | |
2959 | smp_wmb(); | |
bca0324d CM |
2960 | intf->intf_num = i; |
2961 | mutex_unlock(&ipmi_interfaces_mutex); | |
78ba2faf | 2962 | /* After this point the interface is legal to use. */ |
50c812b2 | 2963 | call_smi_watchers(i, intf->si_dev); |
b2c03941 | 2964 | mutex_unlock(&smi_watchers_mutex); |
1da177e4 LT |
2965 | } |
2966 | ||
2967 | return rv; | |
2968 | } | |
c70d7499 | 2969 | EXPORT_SYMBOL(ipmi_register_smi); |
1da177e4 | 2970 | |
b2c03941 CM |
2971 | static void cleanup_smi_msgs(ipmi_smi_t intf) |
2972 | { | |
2973 | int i; | |
2974 | struct seq_table *ent; | |
2975 | ||
2976 | /* No need for locks, the interface is down. */ | |
2977 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { | |
2978 | ent = &(intf->seq_table[i]); | |
2979 | if (!ent->inuse) | |
2980 | continue; | |
2981 | deliver_err_response(ent->recv_msg, IPMI_ERR_UNSPECIFIED); | |
2982 | } | |
2983 | } | |
2984 | ||
1da177e4 LT |
2985 | int ipmi_unregister_smi(ipmi_smi_t intf) |
2986 | { | |
1da177e4 | 2987 | struct ipmi_smi_watcher *w; |
b2c03941 | 2988 | int intf_num = intf->intf_num; |
1da177e4 | 2989 | |
50c812b2 CM |
2990 | ipmi_bmc_unregister(intf); |
2991 | ||
b2c03941 | 2992 | mutex_lock(&smi_watchers_mutex); |
bca0324d | 2993 | mutex_lock(&ipmi_interfaces_mutex); |
b2c03941 CM |
2994 | intf->intf_num = -1; |
2995 | intf->handlers = NULL; | |
bca0324d CM |
2996 | list_del_rcu(&intf->link); |
2997 | mutex_unlock(&ipmi_interfaces_mutex); | |
2998 | synchronize_rcu(); | |
1da177e4 | 2999 | |
b2c03941 CM |
3000 | cleanup_smi_msgs(intf); |
3001 | ||
393d2cc3 | 3002 | remove_proc_entries(intf); |
1da177e4 | 3003 | |
c70d7499 CM |
3004 | /* |
3005 | * Call all the watcher interfaces to tell them that | |
3006 | * an interface is gone. | |
3007 | */ | |
393d2cc3 | 3008 | list_for_each_entry(w, &smi_watchers, link) |
b2c03941 CM |
3009 | w->smi_gone(intf_num); |
3010 | mutex_unlock(&smi_watchers_mutex); | |
393d2cc3 | 3011 | |
393d2cc3 | 3012 | kref_put(&intf->refcount, intf_free); |
1da177e4 LT |
3013 | return 0; |
3014 | } | |
c70d7499 | 3015 | EXPORT_SYMBOL(ipmi_unregister_smi); |
1da177e4 LT |
3016 | |
3017 | static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf, | |
3018 | struct ipmi_smi_msg *msg) | |
3019 | { | |
3020 | struct ipmi_ipmb_addr ipmb_addr; | |
3021 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 | 3022 | |
c70d7499 CM |
3023 | /* |
3024 | * This is 11, not 10, because the response must contain a | |
3025 | * completion code. | |
3026 | */ | |
1da177e4 LT |
3027 | if (msg->rsp_size < 11) { |
3028 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3029 | ipmi_inc_stat(intf, invalid_ipmb_responses); |
1da177e4 LT |
3030 | return 0; |
3031 | } | |
3032 | ||
3033 | if (msg->rsp[2] != 0) { | |
3034 | /* An error getting the response, just ignore it. */ | |
3035 | return 0; | |
3036 | } | |
3037 | ||
3038 | ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; | |
3039 | ipmb_addr.slave_addr = msg->rsp[6]; | |
3040 | ipmb_addr.channel = msg->rsp[3] & 0x0f; | |
3041 | ipmb_addr.lun = msg->rsp[7] & 3; | |
3042 | ||
c70d7499 CM |
3043 | /* |
3044 | * It's a response from a remote entity. Look up the sequence | |
3045 | * number and handle the response. | |
3046 | */ | |
1da177e4 LT |
3047 | if (intf_find_seq(intf, |
3048 | msg->rsp[7] >> 2, | |
3049 | msg->rsp[3] & 0x0f, | |
3050 | msg->rsp[8], | |
3051 | (msg->rsp[4] >> 2) & (~1), | |
3052 | (struct ipmi_addr *) &(ipmb_addr), | |
c70d7499 CM |
3053 | &recv_msg)) { |
3054 | /* | |
3055 | * We were unable to find the sequence number, | |
3056 | * so just nuke the message. | |
3057 | */ | |
b2655f26 | 3058 | ipmi_inc_stat(intf, unhandled_ipmb_responses); |
1da177e4 LT |
3059 | return 0; |
3060 | } | |
3061 | ||
3062 | memcpy(recv_msg->msg_data, | |
3063 | &(msg->rsp[9]), | |
3064 | msg->rsp_size - 9); | |
c70d7499 CM |
3065 | /* |
3066 | * The other fields matched, so no need to set them, except | |
3067 | * for netfn, which needs to be the response that was | |
3068 | * returned, not the request value. | |
3069 | */ | |
1da177e4 LT |
3070 | recv_msg->msg.netfn = msg->rsp[4] >> 2; |
3071 | recv_msg->msg.data = recv_msg->msg_data; | |
3072 | recv_msg->msg.data_len = msg->rsp_size - 10; | |
3073 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
b2655f26 | 3074 | ipmi_inc_stat(intf, handled_ipmb_responses); |
1da177e4 LT |
3075 | deliver_response(recv_msg); |
3076 | ||
3077 | return 0; | |
3078 | } | |
3079 | ||
3080 | static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, | |
3081 | struct ipmi_smi_msg *msg) | |
3082 | { | |
393d2cc3 CM |
3083 | struct cmd_rcvr *rcvr; |
3084 | int rv = 0; | |
3085 | unsigned char netfn; | |
3086 | unsigned char cmd; | |
c69c3127 | 3087 | unsigned char chan; |
393d2cc3 CM |
3088 | ipmi_user_t user = NULL; |
3089 | struct ipmi_ipmb_addr *ipmb_addr; | |
3090 | struct ipmi_recv_msg *recv_msg; | |
b2c03941 | 3091 | struct ipmi_smi_handlers *handlers; |
1da177e4 LT |
3092 | |
3093 | if (msg->rsp_size < 10) { | |
3094 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3095 | ipmi_inc_stat(intf, invalid_commands); |
1da177e4 LT |
3096 | return 0; |
3097 | } | |
3098 | ||
3099 | if (msg->rsp[2] != 0) { | |
3100 | /* An error getting the response, just ignore it. */ | |
3101 | return 0; | |
3102 | } | |
3103 | ||
3104 | netfn = msg->rsp[4] >> 2; | |
3105 | cmd = msg->rsp[8]; | |
c69c3127 | 3106 | chan = msg->rsp[3] & 0xf; |
1da177e4 | 3107 | |
e61fb5b6 | 3108 | rcu_read_lock(); |
c69c3127 | 3109 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
393d2cc3 CM |
3110 | if (rcvr) { |
3111 | user = rcvr->user; | |
3112 | kref_get(&user->refcount); | |
3113 | } else | |
3114 | user = NULL; | |
e61fb5b6 | 3115 | rcu_read_unlock(); |
1da177e4 LT |
3116 | |
3117 | if (user == NULL) { | |
3118 | /* We didn't find a user, deliver an error response. */ | |
b2655f26 | 3119 | ipmi_inc_stat(intf, unhandled_commands); |
1da177e4 LT |
3120 | |
3121 | msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
3122 | msg->data[1] = IPMI_SEND_MSG_CMD; | |
3123 | msg->data[2] = msg->rsp[3]; | |
3124 | msg->data[3] = msg->rsp[6]; | |
c70d7499 | 3125 | msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); |
1da177e4 | 3126 | msg->data[5] = ipmb_checksum(&(msg->data[3]), 2); |
c14979b9 | 3127 | msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address; |
c70d7499 CM |
3128 | /* rqseq/lun */ |
3129 | msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); | |
1da177e4 LT |
3130 | msg->data[8] = msg->rsp[8]; /* cmd */ |
3131 | msg->data[9] = IPMI_INVALID_CMD_COMPLETION_CODE; | |
3132 | msg->data[10] = ipmb_checksum(&(msg->data[6]), 4); | |
3133 | msg->data_size = 11; | |
3134 | ||
3135 | #ifdef DEBUG_MSGING | |
3136 | { | |
3137 | int m; | |
3138 | printk("Invalid command:"); | |
e8b33617 | 3139 | for (m = 0; m < msg->data_size; m++) |
1da177e4 LT |
3140 | printk(" %2.2x", msg->data[m]); |
3141 | printk("\n"); | |
3142 | } | |
3143 | #endif | |
b2c03941 CM |
3144 | rcu_read_lock(); |
3145 | handlers = intf->handlers; | |
3146 | if (handlers) { | |
3147 | handlers->sender(intf->send_info, msg, 0); | |
c70d7499 CM |
3148 | /* |
3149 | * We used the message, so return the value | |
3150 | * that causes it to not be freed or | |
3151 | * queued. | |
3152 | */ | |
b2c03941 CM |
3153 | rv = -1; |
3154 | } | |
3155 | rcu_read_unlock(); | |
1da177e4 LT |
3156 | } else { |
3157 | /* Deliver the message to the user. */ | |
b2655f26 | 3158 | ipmi_inc_stat(intf, handled_commands); |
1da177e4 LT |
3159 | |
3160 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3161 | if (!recv_msg) { |
c70d7499 CM |
3162 | /* |
3163 | * We couldn't allocate memory for the | |
3164 | * message, so requeue it for handling | |
3165 | * later. | |
3166 | */ | |
1da177e4 | 3167 | rv = 1; |
393d2cc3 | 3168 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
3169 | } else { |
3170 | /* Extract the source address from the data. */ | |
3171 | ipmb_addr = (struct ipmi_ipmb_addr *) &recv_msg->addr; | |
3172 | ipmb_addr->addr_type = IPMI_IPMB_ADDR_TYPE; | |
3173 | ipmb_addr->slave_addr = msg->rsp[6]; | |
3174 | ipmb_addr->lun = msg->rsp[7] & 3; | |
3175 | ipmb_addr->channel = msg->rsp[3] & 0xf; | |
3176 | ||
c70d7499 CM |
3177 | /* |
3178 | * Extract the rest of the message information | |
3179 | * from the IPMB header. | |
3180 | */ | |
1da177e4 LT |
3181 | recv_msg->user = user; |
3182 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
3183 | recv_msg->msgid = msg->rsp[7] >> 2; | |
3184 | recv_msg->msg.netfn = msg->rsp[4] >> 2; | |
3185 | recv_msg->msg.cmd = msg->rsp[8]; | |
3186 | recv_msg->msg.data = recv_msg->msg_data; | |
3187 | ||
c70d7499 CM |
3188 | /* |
3189 | * We chop off 10, not 9 bytes because the checksum | |
3190 | * at the end also needs to be removed. | |
3191 | */ | |
1da177e4 LT |
3192 | recv_msg->msg.data_len = msg->rsp_size - 10; |
3193 | memcpy(recv_msg->msg_data, | |
3194 | &(msg->rsp[9]), | |
3195 | msg->rsp_size - 10); | |
3196 | deliver_response(recv_msg); | |
3197 | } | |
3198 | } | |
3199 | ||
3200 | return rv; | |
3201 | } | |
3202 | ||
3203 | static int handle_lan_get_msg_rsp(ipmi_smi_t intf, | |
3204 | struct ipmi_smi_msg *msg) | |
3205 | { | |
3206 | struct ipmi_lan_addr lan_addr; | |
3207 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 LT |
3208 | |
3209 | ||
c70d7499 CM |
3210 | /* |
3211 | * This is 13, not 12, because the response must contain a | |
3212 | * completion code. | |
3213 | */ | |
1da177e4 LT |
3214 | if (msg->rsp_size < 13) { |
3215 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3216 | ipmi_inc_stat(intf, invalid_lan_responses); |
1da177e4 LT |
3217 | return 0; |
3218 | } | |
3219 | ||
3220 | if (msg->rsp[2] != 0) { | |
3221 | /* An error getting the response, just ignore it. */ | |
3222 | return 0; | |
3223 | } | |
3224 | ||
3225 | lan_addr.addr_type = IPMI_LAN_ADDR_TYPE; | |
3226 | lan_addr.session_handle = msg->rsp[4]; | |
3227 | lan_addr.remote_SWID = msg->rsp[8]; | |
3228 | lan_addr.local_SWID = msg->rsp[5]; | |
3229 | lan_addr.channel = msg->rsp[3] & 0x0f; | |
3230 | lan_addr.privilege = msg->rsp[3] >> 4; | |
3231 | lan_addr.lun = msg->rsp[9] & 3; | |
3232 | ||
c70d7499 CM |
3233 | /* |
3234 | * It's a response from a remote entity. Look up the sequence | |
3235 | * number and handle the response. | |
3236 | */ | |
1da177e4 LT |
3237 | if (intf_find_seq(intf, |
3238 | msg->rsp[9] >> 2, | |
3239 | msg->rsp[3] & 0x0f, | |
3240 | msg->rsp[10], | |
3241 | (msg->rsp[6] >> 2) & (~1), | |
3242 | (struct ipmi_addr *) &(lan_addr), | |
c70d7499 CM |
3243 | &recv_msg)) { |
3244 | /* | |
3245 | * We were unable to find the sequence number, | |
3246 | * so just nuke the message. | |
3247 | */ | |
b2655f26 | 3248 | ipmi_inc_stat(intf, unhandled_lan_responses); |
1da177e4 LT |
3249 | return 0; |
3250 | } | |
3251 | ||
3252 | memcpy(recv_msg->msg_data, | |
3253 | &(msg->rsp[11]), | |
3254 | msg->rsp_size - 11); | |
c70d7499 CM |
3255 | /* |
3256 | * The other fields matched, so no need to set them, except | |
3257 | * for netfn, which needs to be the response that was | |
3258 | * returned, not the request value. | |
3259 | */ | |
1da177e4 LT |
3260 | recv_msg->msg.netfn = msg->rsp[6] >> 2; |
3261 | recv_msg->msg.data = recv_msg->msg_data; | |
3262 | recv_msg->msg.data_len = msg->rsp_size - 12; | |
3263 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
b2655f26 | 3264 | ipmi_inc_stat(intf, handled_lan_responses); |
1da177e4 LT |
3265 | deliver_response(recv_msg); |
3266 | ||
3267 | return 0; | |
3268 | } | |
3269 | ||
3270 | static int handle_lan_get_msg_cmd(ipmi_smi_t intf, | |
3271 | struct ipmi_smi_msg *msg) | |
3272 | { | |
393d2cc3 CM |
3273 | struct cmd_rcvr *rcvr; |
3274 | int rv = 0; | |
3275 | unsigned char netfn; | |
3276 | unsigned char cmd; | |
c69c3127 | 3277 | unsigned char chan; |
393d2cc3 CM |
3278 | ipmi_user_t user = NULL; |
3279 | struct ipmi_lan_addr *lan_addr; | |
3280 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 LT |
3281 | |
3282 | if (msg->rsp_size < 12) { | |
3283 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3284 | ipmi_inc_stat(intf, invalid_commands); |
1da177e4 LT |
3285 | return 0; |
3286 | } | |
3287 | ||
3288 | if (msg->rsp[2] != 0) { | |
3289 | /* An error getting the response, just ignore it. */ | |
3290 | return 0; | |
3291 | } | |
3292 | ||
3293 | netfn = msg->rsp[6] >> 2; | |
3294 | cmd = msg->rsp[10]; | |
c69c3127 | 3295 | chan = msg->rsp[3] & 0xf; |
1da177e4 | 3296 | |
e61fb5b6 | 3297 | rcu_read_lock(); |
c69c3127 | 3298 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
393d2cc3 CM |
3299 | if (rcvr) { |
3300 | user = rcvr->user; | |
3301 | kref_get(&user->refcount); | |
3302 | } else | |
3303 | user = NULL; | |
e61fb5b6 | 3304 | rcu_read_unlock(); |
1da177e4 LT |
3305 | |
3306 | if (user == NULL) { | |
393d2cc3 | 3307 | /* We didn't find a user, just give up. */ |
b2655f26 | 3308 | ipmi_inc_stat(intf, unhandled_commands); |
1da177e4 | 3309 | |
c70d7499 CM |
3310 | /* |
3311 | * Don't do anything with these messages, just allow | |
3312 | * them to be freed. | |
3313 | */ | |
3314 | rv = 0; | |
1da177e4 LT |
3315 | } else { |
3316 | /* Deliver the message to the user. */ | |
b2655f26 | 3317 | ipmi_inc_stat(intf, handled_commands); |
1da177e4 LT |
3318 | |
3319 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3320 | if (!recv_msg) { |
c70d7499 CM |
3321 | /* |
3322 | * We couldn't allocate memory for the | |
3323 | * message, so requeue it for handling later. | |
3324 | */ | |
1da177e4 | 3325 | rv = 1; |
393d2cc3 | 3326 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
3327 | } else { |
3328 | /* Extract the source address from the data. */ | |
3329 | lan_addr = (struct ipmi_lan_addr *) &recv_msg->addr; | |
3330 | lan_addr->addr_type = IPMI_LAN_ADDR_TYPE; | |
3331 | lan_addr->session_handle = msg->rsp[4]; | |
3332 | lan_addr->remote_SWID = msg->rsp[8]; | |
3333 | lan_addr->local_SWID = msg->rsp[5]; | |
3334 | lan_addr->lun = msg->rsp[9] & 3; | |
3335 | lan_addr->channel = msg->rsp[3] & 0xf; | |
3336 | lan_addr->privilege = msg->rsp[3] >> 4; | |
3337 | ||
c70d7499 CM |
3338 | /* |
3339 | * Extract the rest of the message information | |
3340 | * from the IPMB header. | |
3341 | */ | |
1da177e4 LT |
3342 | recv_msg->user = user; |
3343 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
3344 | recv_msg->msgid = msg->rsp[9] >> 2; | |
3345 | recv_msg->msg.netfn = msg->rsp[6] >> 2; | |
3346 | recv_msg->msg.cmd = msg->rsp[10]; | |
3347 | recv_msg->msg.data = recv_msg->msg_data; | |
3348 | ||
c70d7499 CM |
3349 | /* |
3350 | * We chop off 12, not 11 bytes because the checksum | |
3351 | * at the end also needs to be removed. | |
3352 | */ | |
1da177e4 LT |
3353 | recv_msg->msg.data_len = msg->rsp_size - 12; |
3354 | memcpy(recv_msg->msg_data, | |
3355 | &(msg->rsp[11]), | |
3356 | msg->rsp_size - 12); | |
3357 | deliver_response(recv_msg); | |
3358 | } | |
3359 | } | |
3360 | ||
3361 | return rv; | |
3362 | } | |
3363 | ||
4dec302f | 3364 | /* |
3365 | * This routine will handle "Get Message" command responses with | |
3366 | * channels that use an OEM Medium. The message format belongs to | |
3367 | * the OEM. See IPMI 2.0 specification, Chapter 6 and | |
3368 | * Chapter 22, sections 22.6 and 22.24 for more details. | |
3369 | */ | |
3370 | static int handle_oem_get_msg_cmd(ipmi_smi_t intf, | |
3371 | struct ipmi_smi_msg *msg) | |
3372 | { | |
3373 | struct cmd_rcvr *rcvr; | |
3374 | int rv = 0; | |
3375 | unsigned char netfn; | |
3376 | unsigned char cmd; | |
3377 | unsigned char chan; | |
3378 | ipmi_user_t user = NULL; | |
3379 | struct ipmi_system_interface_addr *smi_addr; | |
3380 | struct ipmi_recv_msg *recv_msg; | |
3381 | ||
3382 | /* | |
3383 | * We expect the OEM SW to perform error checking | |
3384 | * so we just do some basic sanity checks | |
3385 | */ | |
3386 | if (msg->rsp_size < 4) { | |
3387 | /* Message not big enough, just ignore it. */ | |
3388 | ipmi_inc_stat(intf, invalid_commands); | |
3389 | return 0; | |
3390 | } | |
3391 | ||
3392 | if (msg->rsp[2] != 0) { | |
3393 | /* An error getting the response, just ignore it. */ | |
3394 | return 0; | |
3395 | } | |
3396 | ||
3397 | /* | |
3398 | * This is an OEM Message so the OEM needs to know how | |
3399 | * handle the message. We do no interpretation. | |
3400 | */ | |
3401 | netfn = msg->rsp[0] >> 2; | |
3402 | cmd = msg->rsp[1]; | |
3403 | chan = msg->rsp[3] & 0xf; | |
3404 | ||
3405 | rcu_read_lock(); | |
3406 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); | |
3407 | if (rcvr) { | |
3408 | user = rcvr->user; | |
3409 | kref_get(&user->refcount); | |
3410 | } else | |
3411 | user = NULL; | |
3412 | rcu_read_unlock(); | |
3413 | ||
3414 | if (user == NULL) { | |
3415 | /* We didn't find a user, just give up. */ | |
3416 | ipmi_inc_stat(intf, unhandled_commands); | |
3417 | ||
3418 | /* | |
3419 | * Don't do anything with these messages, just allow | |
3420 | * them to be freed. | |
3421 | */ | |
3422 | ||
3423 | rv = 0; | |
3424 | } else { | |
3425 | /* Deliver the message to the user. */ | |
3426 | ipmi_inc_stat(intf, handled_commands); | |
3427 | ||
3428 | recv_msg = ipmi_alloc_recv_msg(); | |
3429 | if (!recv_msg) { | |
3430 | /* | |
3431 | * We couldn't allocate memory for the | |
3432 | * message, so requeue it for handling | |
3433 | * later. | |
3434 | */ | |
3435 | rv = 1; | |
3436 | kref_put(&user->refcount, free_user); | |
3437 | } else { | |
3438 | /* | |
3439 | * OEM Messages are expected to be delivered via | |
3440 | * the system interface to SMS software. We might | |
3441 | * need to visit this again depending on OEM | |
3442 | * requirements | |
3443 | */ | |
3444 | smi_addr = ((struct ipmi_system_interface_addr *) | |
3445 | &(recv_msg->addr)); | |
3446 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3447 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3448 | smi_addr->lun = msg->rsp[0] & 3; | |
3449 | ||
3450 | recv_msg->user = user; | |
3451 | recv_msg->user_msg_data = NULL; | |
3452 | recv_msg->recv_type = IPMI_OEM_RECV_TYPE; | |
3453 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3454 | recv_msg->msg.cmd = msg->rsp[1]; | |
3455 | recv_msg->msg.data = recv_msg->msg_data; | |
3456 | ||
3457 | /* | |
3458 | * The message starts at byte 4 which follows the | |
3459 | * the Channel Byte in the "GET MESSAGE" command | |
3460 | */ | |
3461 | recv_msg->msg.data_len = msg->rsp_size - 4; | |
3462 | memcpy(recv_msg->msg_data, | |
3463 | &(msg->rsp[4]), | |
3464 | msg->rsp_size - 4); | |
3465 | deliver_response(recv_msg); | |
3466 | } | |
3467 | } | |
3468 | ||
3469 | return rv; | |
3470 | } | |
3471 | ||
1da177e4 LT |
3472 | static void copy_event_into_recv_msg(struct ipmi_recv_msg *recv_msg, |
3473 | struct ipmi_smi_msg *msg) | |
3474 | { | |
3475 | struct ipmi_system_interface_addr *smi_addr; | |
c70d7499 | 3476 | |
1da177e4 LT |
3477 | recv_msg->msgid = 0; |
3478 | smi_addr = (struct ipmi_system_interface_addr *) &(recv_msg->addr); | |
3479 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3480 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3481 | smi_addr->lun = msg->rsp[0] & 3; | |
3482 | recv_msg->recv_type = IPMI_ASYNC_EVENT_RECV_TYPE; | |
3483 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3484 | recv_msg->msg.cmd = msg->rsp[1]; | |
3485 | memcpy(recv_msg->msg_data, &(msg->rsp[3]), msg->rsp_size - 3); | |
3486 | recv_msg->msg.data = recv_msg->msg_data; | |
3487 | recv_msg->msg.data_len = msg->rsp_size - 3; | |
3488 | } | |
3489 | ||
1da177e4 LT |
3490 | static int handle_read_event_rsp(ipmi_smi_t intf, |
3491 | struct ipmi_smi_msg *msg) | |
3492 | { | |
3493 | struct ipmi_recv_msg *recv_msg, *recv_msg2; | |
3494 | struct list_head msgs; | |
3495 | ipmi_user_t user; | |
3496 | int rv = 0; | |
3497 | int deliver_count = 0; | |
3498 | unsigned long flags; | |
3499 | ||
3500 | if (msg->rsp_size < 19) { | |
3501 | /* Message is too small to be an IPMB event. */ | |
b2655f26 | 3502 | ipmi_inc_stat(intf, invalid_events); |
1da177e4 LT |
3503 | return 0; |
3504 | } | |
3505 | ||
3506 | if (msg->rsp[2] != 0) { | |
3507 | /* An error getting the event, just ignore it. */ | |
3508 | return 0; | |
3509 | } | |
3510 | ||
3511 | INIT_LIST_HEAD(&msgs); | |
3512 | ||
393d2cc3 | 3513 | spin_lock_irqsave(&intf->events_lock, flags); |
1da177e4 | 3514 | |
b2655f26 | 3515 | ipmi_inc_stat(intf, events); |
1da177e4 | 3516 | |
c70d7499 CM |
3517 | /* |
3518 | * Allocate and fill in one message for every user that is | |
3519 | * getting events. | |
3520 | */ | |
393d2cc3 CM |
3521 | rcu_read_lock(); |
3522 | list_for_each_entry_rcu(user, &intf->users, link) { | |
8a3628d5 | 3523 | if (!user->gets_events) |
1da177e4 LT |
3524 | continue; |
3525 | ||
3526 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3527 | if (!recv_msg) { |
393d2cc3 | 3528 | rcu_read_unlock(); |
8a3628d5 CM |
3529 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, |
3530 | link) { | |
1da177e4 LT |
3531 | list_del(&recv_msg->link); |
3532 | ipmi_free_recv_msg(recv_msg); | |
3533 | } | |
c70d7499 CM |
3534 | /* |
3535 | * We couldn't allocate memory for the | |
3536 | * message, so requeue it for handling | |
3537 | * later. | |
3538 | */ | |
1da177e4 LT |
3539 | rv = 1; |
3540 | goto out; | |
3541 | } | |
3542 | ||
3543 | deliver_count++; | |
3544 | ||
3545 | copy_event_into_recv_msg(recv_msg, msg); | |
3546 | recv_msg->user = user; | |
393d2cc3 | 3547 | kref_get(&user->refcount); |
1da177e4 LT |
3548 | list_add_tail(&(recv_msg->link), &msgs); |
3549 | } | |
393d2cc3 | 3550 | rcu_read_unlock(); |
1da177e4 LT |
3551 | |
3552 | if (deliver_count) { | |
3553 | /* Now deliver all the messages. */ | |
3554 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, link) { | |
3555 | list_del(&recv_msg->link); | |
3556 | deliver_response(recv_msg); | |
3557 | } | |
3558 | } else if (intf->waiting_events_count < MAX_EVENTS_IN_QUEUE) { | |
c70d7499 CM |
3559 | /* |
3560 | * No one to receive the message, put it in queue if there's | |
3561 | * not already too many things in the queue. | |
3562 | */ | |
1da177e4 | 3563 | recv_msg = ipmi_alloc_recv_msg(); |
8a3628d5 | 3564 | if (!recv_msg) { |
c70d7499 CM |
3565 | /* |
3566 | * We couldn't allocate memory for the | |
3567 | * message, so requeue it for handling | |
3568 | * later. | |
3569 | */ | |
1da177e4 LT |
3570 | rv = 1; |
3571 | goto out; | |
3572 | } | |
3573 | ||
3574 | copy_event_into_recv_msg(recv_msg, msg); | |
3575 | list_add_tail(&(recv_msg->link), &(intf->waiting_events)); | |
4791c03d | 3576 | intf->waiting_events_count++; |
87ebd06f | 3577 | } else if (!intf->event_msg_printed) { |
c70d7499 CM |
3578 | /* |
3579 | * There's too many things in the queue, discard this | |
3580 | * message. | |
3581 | */ | |
87ebd06f CM |
3582 | printk(KERN_WARNING PFX "Event queue full, discarding" |
3583 | " incoming events\n"); | |
3584 | intf->event_msg_printed = 1; | |
1da177e4 LT |
3585 | } |
3586 | ||
3587 | out: | |
3588 | spin_unlock_irqrestore(&(intf->events_lock), flags); | |
3589 | ||
3590 | return rv; | |
3591 | } | |
3592 | ||
3593 | static int handle_bmc_rsp(ipmi_smi_t intf, | |
3594 | struct ipmi_smi_msg *msg) | |
3595 | { | |
3596 | struct ipmi_recv_msg *recv_msg; | |
393d2cc3 | 3597 | struct ipmi_user *user; |
1da177e4 LT |
3598 | |
3599 | recv_msg = (struct ipmi_recv_msg *) msg->user_data; | |
c70d7499 CM |
3600 | if (recv_msg == NULL) { |
3601 | printk(KERN_WARNING | |
3602 | "IPMI message received with no owner. This\n" | |
3603 | "could be because of a malformed message, or\n" | |
3604 | "because of a hardware error. Contact your\n" | |
3605 | "hardware vender for assistance\n"); | |
56a55ec6 CM |
3606 | return 0; |
3607 | } | |
1da177e4 | 3608 | |
393d2cc3 | 3609 | user = recv_msg->user; |
1da177e4 | 3610 | /* Make sure the user still exists. */ |
393d2cc3 | 3611 | if (user && !user->valid) { |
56a55ec6 | 3612 | /* The user for the message went away, so give up. */ |
b2655f26 | 3613 | ipmi_inc_stat(intf, unhandled_local_responses); |
1da177e4 LT |
3614 | ipmi_free_recv_msg(recv_msg); |
3615 | } else { | |
3616 | struct ipmi_system_interface_addr *smi_addr; | |
3617 | ||
b2655f26 | 3618 | ipmi_inc_stat(intf, handled_local_responses); |
1da177e4 LT |
3619 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
3620 | recv_msg->msgid = msg->msgid; | |
3621 | smi_addr = ((struct ipmi_system_interface_addr *) | |
3622 | &(recv_msg->addr)); | |
3623 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3624 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3625 | smi_addr->lun = msg->rsp[0] & 3; | |
3626 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3627 | recv_msg->msg.cmd = msg->rsp[1]; | |
3628 | memcpy(recv_msg->msg_data, | |
3629 | &(msg->rsp[2]), | |
3630 | msg->rsp_size - 2); | |
3631 | recv_msg->msg.data = recv_msg->msg_data; | |
3632 | recv_msg->msg.data_len = msg->rsp_size - 2; | |
3633 | deliver_response(recv_msg); | |
3634 | } | |
3635 | ||
3636 | return 0; | |
3637 | } | |
3638 | ||
c70d7499 | 3639 | /* |
7adf579c | 3640 | * Handle a received message. Return 1 if the message should be requeued, |
c70d7499 CM |
3641 | * 0 if the message should be freed, or -1 if the message should not |
3642 | * be freed or requeued. | |
3643 | */ | |
7adf579c | 3644 | static int handle_one_recv_msg(ipmi_smi_t intf, |
1da177e4 LT |
3645 | struct ipmi_smi_msg *msg) |
3646 | { | |
3647 | int requeue; | |
3648 | int chan; | |
3649 | ||
3650 | #ifdef DEBUG_MSGING | |
3651 | int m; | |
3652 | printk("Recv:"); | |
e8b33617 | 3653 | for (m = 0; m < msg->rsp_size; m++) |
1da177e4 LT |
3654 | printk(" %2.2x", msg->rsp[m]); |
3655 | printk("\n"); | |
3656 | #endif | |
3657 | if (msg->rsp_size < 2) { | |
3658 | /* Message is too small to be correct. */ | |
3659 | printk(KERN_WARNING PFX "BMC returned to small a message" | |
3660 | " for netfn %x cmd %x, got %d bytes\n", | |
3661 | (msg->data[0] >> 2) | 1, msg->data[1], msg->rsp_size); | |
3662 | ||
3663 | /* Generate an error response for the message. */ | |
3664 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3665 | msg->rsp[1] = msg->data[1]; | |
3666 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3667 | msg->rsp_size = 3; | |
c70d7499 CM |
3668 | } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1)) |
3669 | || (msg->rsp[1] != msg->data[1])) { | |
3670 | /* | |
3671 | * The NetFN and Command in the response is not even | |
3672 | * marginally correct. | |
3673 | */ | |
1da177e4 LT |
3674 | printk(KERN_WARNING PFX "BMC returned incorrect response," |
3675 | " expected netfn %x cmd %x, got netfn %x cmd %x\n", | |
3676 | (msg->data[0] >> 2) | 1, msg->data[1], | |
3677 | msg->rsp[0] >> 2, msg->rsp[1]); | |
3678 | ||
3679 | /* Generate an error response for the message. */ | |
3680 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3681 | msg->rsp[1] = msg->data[1]; | |
3682 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3683 | msg->rsp_size = 3; | |
3684 | } | |
3685 | ||
3686 | if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
3687 | && (msg->rsp[1] == IPMI_SEND_MSG_CMD) | |
c70d7499 CM |
3688 | && (msg->user_data != NULL)) { |
3689 | /* | |
3690 | * It's a response to a response we sent. For this we | |
3691 | * deliver a send message response to the user. | |
3692 | */ | |
393d2cc3 | 3693 | struct ipmi_recv_msg *recv_msg = msg->user_data; |
1da177e4 LT |
3694 | |
3695 | requeue = 0; | |
3696 | if (msg->rsp_size < 2) | |
3697 | /* Message is too small to be correct. */ | |
3698 | goto out; | |
3699 | ||
3700 | chan = msg->data[2] & 0x0f; | |
3701 | if (chan >= IPMI_MAX_CHANNELS) | |
3702 | /* Invalid channel number */ | |
3703 | goto out; | |
3704 | ||
393d2cc3 CM |
3705 | if (!recv_msg) |
3706 | goto out; | |
3707 | ||
3708 | /* Make sure the user still exists. */ | |
3709 | if (!recv_msg->user || !recv_msg->user->valid) | |
3710 | goto out; | |
3711 | ||
3712 | recv_msg->recv_type = IPMI_RESPONSE_RESPONSE_TYPE; | |
3713 | recv_msg->msg.data = recv_msg->msg_data; | |
3714 | recv_msg->msg.data_len = 1; | |
3715 | recv_msg->msg_data[0] = msg->rsp[2]; | |
3716 | deliver_response(recv_msg); | |
1da177e4 | 3717 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
c70d7499 | 3718 | && (msg->rsp[1] == IPMI_GET_MSG_CMD)) { |
1da177e4 LT |
3719 | /* It's from the receive queue. */ |
3720 | chan = msg->rsp[3] & 0xf; | |
3721 | if (chan >= IPMI_MAX_CHANNELS) { | |
3722 | /* Invalid channel number */ | |
3723 | requeue = 0; | |
3724 | goto out; | |
3725 | } | |
3726 | ||
4dec302f | 3727 | /* |
9a2845c4 CM |
3728 | * We need to make sure the channels have been initialized. |
3729 | * The channel_handler routine will set the "curr_channel" | |
3730 | * equal to or greater than IPMI_MAX_CHANNELS when all the | |
3731 | * channels for this interface have been initialized. | |
3732 | */ | |
4dec302f | 3733 | if (intf->curr_channel < IPMI_MAX_CHANNELS) { |
9a2845c4 | 3734 | requeue = 0; /* Throw the message away */ |
4dec302f | 3735 | goto out; |
3736 | } | |
3737 | ||
1da177e4 LT |
3738 | switch (intf->channels[chan].medium) { |
3739 | case IPMI_CHANNEL_MEDIUM_IPMB: | |
3740 | if (msg->rsp[4] & 0x04) { | |
c70d7499 CM |
3741 | /* |
3742 | * It's a response, so find the | |
3743 | * requesting message and send it up. | |
3744 | */ | |
1da177e4 LT |
3745 | requeue = handle_ipmb_get_msg_rsp(intf, msg); |
3746 | } else { | |
c70d7499 CM |
3747 | /* |
3748 | * It's a command to the SMS from some other | |
3749 | * entity. Handle that. | |
3750 | */ | |
1da177e4 LT |
3751 | requeue = handle_ipmb_get_msg_cmd(intf, msg); |
3752 | } | |
3753 | break; | |
3754 | ||
3755 | case IPMI_CHANNEL_MEDIUM_8023LAN: | |
3756 | case IPMI_CHANNEL_MEDIUM_ASYNC: | |
3757 | if (msg->rsp[6] & 0x04) { | |
c70d7499 CM |
3758 | /* |
3759 | * It's a response, so find the | |
3760 | * requesting message and send it up. | |
3761 | */ | |
1da177e4 LT |
3762 | requeue = handle_lan_get_msg_rsp(intf, msg); |
3763 | } else { | |
c70d7499 CM |
3764 | /* |
3765 | * It's a command to the SMS from some other | |
3766 | * entity. Handle that. | |
3767 | */ | |
1da177e4 LT |
3768 | requeue = handle_lan_get_msg_cmd(intf, msg); |
3769 | } | |
3770 | break; | |
3771 | ||
3772 | default: | |
4dec302f | 3773 | /* Check for OEM Channels. Clients had better |
3774 | register for these commands. */ | |
3775 | if ((intf->channels[chan].medium | |
3776 | >= IPMI_CHANNEL_MEDIUM_OEM_MIN) | |
3777 | && (intf->channels[chan].medium | |
3778 | <= IPMI_CHANNEL_MEDIUM_OEM_MAX)) { | |
3779 | requeue = handle_oem_get_msg_cmd(intf, msg); | |
3780 | } else { | |
3781 | /* | |
3782 | * We don't handle the channel type, so just | |
3783 | * free the message. | |
3784 | */ | |
3785 | requeue = 0; | |
3786 | } | |
1da177e4 LT |
3787 | } |
3788 | ||
3789 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
c70d7499 | 3790 | && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD)) { |
1da177e4 LT |
3791 | /* It's an asyncronous event. */ |
3792 | requeue = handle_read_event_rsp(intf, msg); | |
3793 | } else { | |
3794 | /* It's a response from the local BMC. */ | |
3795 | requeue = handle_bmc_rsp(intf, msg); | |
3796 | } | |
3797 | ||
3798 | out: | |
3799 | return requeue; | |
3800 | } | |
3801 | ||
7adf579c CM |
3802 | /* |
3803 | * If there are messages in the queue or pretimeouts, handle them. | |
3804 | */ | |
3805 | static void handle_new_recv_msgs(ipmi_smi_t intf) | |
3806 | { | |
3807 | struct ipmi_smi_msg *smi_msg; | |
3808 | unsigned long flags = 0; | |
3809 | int rv; | |
3810 | int run_to_completion = intf->run_to_completion; | |
3811 | ||
3812 | /* See if any waiting messages need to be processed. */ | |
3813 | if (!run_to_completion) | |
3814 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); | |
3815 | while (!list_empty(&intf->waiting_msgs)) { | |
3816 | smi_msg = list_entry(intf->waiting_msgs.next, | |
3817 | struct ipmi_smi_msg, link); | |
3818 | list_del(&smi_msg->link); | |
3819 | if (!run_to_completion) | |
3820 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
3821 | rv = handle_one_recv_msg(intf, smi_msg); | |
3822 | if (!run_to_completion) | |
3823 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); | |
3824 | if (rv == 0) { | |
3825 | /* Message handled */ | |
3826 | ipmi_free_smi_msg(smi_msg); | |
3827 | } else if (rv < 0) { | |
3828 | /* Fatal error on the message, del but don't free. */ | |
3829 | } else { | |
3830 | /* | |
3831 | * To preserve message order, quit if we | |
3832 | * can't handle a message. | |
3833 | */ | |
3834 | list_add(&smi_msg->link, &intf->waiting_msgs); | |
3835 | break; | |
3836 | } | |
3837 | } | |
3838 | if (!run_to_completion) | |
3839 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
3840 | ||
3841 | /* | |
3842 | * If the pretimout count is non-zero, decrement one from it and | |
3843 | * deliver pretimeouts to all the users. | |
3844 | */ | |
3845 | if (atomic_add_unless(&intf->watchdog_pretimeouts_to_deliver, -1, 0)) { | |
3846 | ipmi_user_t user; | |
3847 | ||
3848 | rcu_read_lock(); | |
3849 | list_for_each_entry_rcu(user, &intf->users, link) { | |
3850 | if (user->handler->ipmi_watchdog_pretimeout) | |
3851 | user->handler->ipmi_watchdog_pretimeout( | |
3852 | user->handler_data); | |
3853 | } | |
3854 | rcu_read_unlock(); | |
3855 | } | |
3856 | } | |
3857 | ||
3858 | static void smi_recv_tasklet(unsigned long val) | |
3859 | { | |
3860 | handle_new_recv_msgs((ipmi_smi_t) val); | |
3861 | } | |
3862 | ||
1da177e4 LT |
3863 | /* Handle a new message from the lower layer. */ |
3864 | void ipmi_smi_msg_received(ipmi_smi_t intf, | |
3865 | struct ipmi_smi_msg *msg) | |
3866 | { | |
5956dce1 | 3867 | unsigned long flags = 0; /* keep us warning-free. */ |
5956dce1 | 3868 | int run_to_completion; |
1da177e4 LT |
3869 | |
3870 | ||
1da177e4 LT |
3871 | if ((msg->data_size >= 2) |
3872 | && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) | |
3873 | && (msg->data[1] == IPMI_SEND_MSG_CMD) | |
c70d7499 CM |
3874 | && (msg->user_data == NULL)) { |
3875 | /* | |
3876 | * This is the local response to a command send, start | |
3877 | * the timer for these. The user_data will not be | |
3878 | * NULL if this is a response send, and we will let | |
3879 | * response sends just go through. | |
3880 | */ | |
3881 | ||
3882 | /* | |
3883 | * Check for errors, if we get certain errors (ones | |
3884 | * that mean basically we can try again later), we | |
3885 | * ignore them and start the timer. Otherwise we | |
3886 | * report the error immediately. | |
3887 | */ | |
1da177e4 LT |
3888 | if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) |
3889 | && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) | |
46d52b09 CM |
3890 | && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR) |
3891 | && (msg->rsp[2] != IPMI_BUS_ERR) | |
c70d7499 | 3892 | && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) { |
1da177e4 LT |
3893 | int chan = msg->rsp[3] & 0xf; |
3894 | ||
3895 | /* Got an error sending the message, handle it. */ | |
1da177e4 LT |
3896 | if (chan >= IPMI_MAX_CHANNELS) |
3897 | ; /* This shouldn't happen */ | |
3898 | else if ((intf->channels[chan].medium | |
3899 | == IPMI_CHANNEL_MEDIUM_8023LAN) | |
3900 | || (intf->channels[chan].medium | |
3901 | == IPMI_CHANNEL_MEDIUM_ASYNC)) | |
b2655f26 | 3902 | ipmi_inc_stat(intf, sent_lan_command_errs); |
1da177e4 | 3903 | else |
b2655f26 | 3904 | ipmi_inc_stat(intf, sent_ipmb_command_errs); |
1da177e4 | 3905 | intf_err_seq(intf, msg->msgid, msg->rsp[2]); |
c70d7499 | 3906 | } else |
1da177e4 LT |
3907 | /* The message was sent, start the timer. */ |
3908 | intf_start_seq_timer(intf, msg->msgid); | |
1da177e4 LT |
3909 | |
3910 | ipmi_free_smi_msg(msg); | |
393d2cc3 | 3911 | goto out; |
1da177e4 LT |
3912 | } |
3913 | ||
c70d7499 CM |
3914 | /* |
3915 | * To preserve message order, if the list is not empty, we | |
3916 | * tack this message onto the end of the list. | |
3917 | */ | |
5956dce1 KB |
3918 | run_to_completion = intf->run_to_completion; |
3919 | if (!run_to_completion) | |
3920 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); | |
7adf579c | 3921 | list_add_tail(&msg->link, &intf->waiting_msgs); |
5956dce1 KB |
3922 | if (!run_to_completion) |
3923 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
c70d7499 | 3924 | |
7adf579c | 3925 | tasklet_schedule(&intf->recv_tasklet); |
393d2cc3 CM |
3926 | out: |
3927 | return; | |
1da177e4 | 3928 | } |
c70d7499 | 3929 | EXPORT_SYMBOL(ipmi_smi_msg_received); |
1da177e4 LT |
3930 | |
3931 | void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf) | |
3932 | { | |
7adf579c CM |
3933 | atomic_set(&intf->watchdog_pretimeouts_to_deliver, 1); |
3934 | tasklet_schedule(&intf->recv_tasklet); | |
1da177e4 | 3935 | } |
c70d7499 | 3936 | EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); |
1da177e4 | 3937 | |
882fe011 CM |
3938 | static struct ipmi_smi_msg * |
3939 | smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, | |
3940 | unsigned char seq, long seqid) | |
1da177e4 | 3941 | { |
882fe011 | 3942 | struct ipmi_smi_msg *smi_msg = ipmi_alloc_smi_msg(); |
1da177e4 | 3943 | if (!smi_msg) |
c70d7499 CM |
3944 | /* |
3945 | * If we can't allocate the message, then just return, we | |
3946 | * get 4 retries, so this should be ok. | |
3947 | */ | |
882fe011 | 3948 | return NULL; |
1da177e4 LT |
3949 | |
3950 | memcpy(smi_msg->data, recv_msg->msg.data, recv_msg->msg.data_len); | |
3951 | smi_msg->data_size = recv_msg->msg.data_len; | |
3952 | smi_msg->msgid = STORE_SEQ_IN_MSGID(seq, seqid); | |
c70d7499 | 3953 | |
1da177e4 LT |
3954 | #ifdef DEBUG_MSGING |
3955 | { | |
3956 | int m; | |
3957 | printk("Resend: "); | |
e8b33617 | 3958 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
3959 | printk(" %2.2x", smi_msg->data[m]); |
3960 | printk("\n"); | |
3961 | } | |
3962 | #endif | |
882fe011 | 3963 | return smi_msg; |
1da177e4 LT |
3964 | } |
3965 | ||
393d2cc3 CM |
3966 | static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent, |
3967 | struct list_head *timeouts, long timeout_period, | |
3968 | int slot, unsigned long *flags) | |
3969 | { | |
b2c03941 CM |
3970 | struct ipmi_recv_msg *msg; |
3971 | struct ipmi_smi_handlers *handlers; | |
3972 | ||
3973 | if (intf->intf_num == -1) | |
3974 | return; | |
393d2cc3 CM |
3975 | |
3976 | if (!ent->inuse) | |
3977 | return; | |
3978 | ||
3979 | ent->timeout -= timeout_period; | |
3980 | if (ent->timeout > 0) | |
3981 | return; | |
3982 | ||
3983 | if (ent->retries_left == 0) { | |
3984 | /* The message has used all its retries. */ | |
3985 | ent->inuse = 0; | |
3986 | msg = ent->recv_msg; | |
3987 | list_add_tail(&msg->link, timeouts); | |
393d2cc3 | 3988 | if (ent->broadcast) |
b2655f26 | 3989 | ipmi_inc_stat(intf, timed_out_ipmb_broadcasts); |
25176ed6 | 3990 | else if (is_lan_addr(&ent->recv_msg->addr)) |
b2655f26 | 3991 | ipmi_inc_stat(intf, timed_out_lan_commands); |
393d2cc3 | 3992 | else |
b2655f26 | 3993 | ipmi_inc_stat(intf, timed_out_ipmb_commands); |
393d2cc3 CM |
3994 | } else { |
3995 | struct ipmi_smi_msg *smi_msg; | |
3996 | /* More retries, send again. */ | |
3997 | ||
c70d7499 CM |
3998 | /* |
3999 | * Start with the max timer, set to normal timer after | |
4000 | * the message is sent. | |
4001 | */ | |
393d2cc3 CM |
4002 | ent->timeout = MAX_MSG_TIMEOUT; |
4003 | ent->retries_left--; | |
393d2cc3 CM |
4004 | smi_msg = smi_from_recv_msg(intf, ent->recv_msg, slot, |
4005 | ent->seqid); | |
25176ed6 CM |
4006 | if (!smi_msg) { |
4007 | if (is_lan_addr(&ent->recv_msg->addr)) | |
4008 | ipmi_inc_stat(intf, | |
4009 | dropped_rexmit_lan_commands); | |
4010 | else | |
4011 | ipmi_inc_stat(intf, | |
4012 | dropped_rexmit_ipmb_commands); | |
393d2cc3 | 4013 | return; |
25176ed6 | 4014 | } |
393d2cc3 CM |
4015 | |
4016 | spin_unlock_irqrestore(&intf->seq_lock, *flags); | |
b2c03941 | 4017 | |
c70d7499 CM |
4018 | /* |
4019 | * Send the new message. We send with a zero | |
4020 | * priority. It timed out, I doubt time is that | |
4021 | * critical now, and high priority messages are really | |
4022 | * only for messages to the local MC, which don't get | |
4023 | * resent. | |
4024 | */ | |
b2c03941 | 4025 | handlers = intf->handlers; |
25176ed6 CM |
4026 | if (handlers) { |
4027 | if (is_lan_addr(&ent->recv_msg->addr)) | |
4028 | ipmi_inc_stat(intf, | |
4029 | retransmitted_lan_commands); | |
4030 | else | |
4031 | ipmi_inc_stat(intf, | |
4032 | retransmitted_ipmb_commands); | |
4033 | ||
b2c03941 CM |
4034 | intf->handlers->sender(intf->send_info, |
4035 | smi_msg, 0); | |
25176ed6 | 4036 | } else |
b2c03941 CM |
4037 | ipmi_free_smi_msg(smi_msg); |
4038 | ||
393d2cc3 CM |
4039 | spin_lock_irqsave(&intf->seq_lock, *flags); |
4040 | } | |
4041 | } | |
4042 | ||
4043 | static void ipmi_timeout_handler(long timeout_period) | |
1da177e4 LT |
4044 | { |
4045 | ipmi_smi_t intf; | |
4046 | struct list_head timeouts; | |
4047 | struct ipmi_recv_msg *msg, *msg2; | |
1da177e4 | 4048 | unsigned long flags; |
bca0324d | 4049 | int i; |
1da177e4 | 4050 | |
bca0324d CM |
4051 | rcu_read_lock(); |
4052 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
7adf579c | 4053 | tasklet_schedule(&intf->recv_tasklet); |
1da177e4 | 4054 | |
c70d7499 CM |
4055 | /* |
4056 | * Go through the seq table and find any messages that | |
4057 | * have timed out, putting them in the timeouts | |
4058 | * list. | |
4059 | */ | |
41c57a87 | 4060 | INIT_LIST_HEAD(&timeouts); |
393d2cc3 | 4061 | spin_lock_irqsave(&intf->seq_lock, flags); |
bca0324d CM |
4062 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) |
4063 | check_msg_timeout(intf, &(intf->seq_table[i]), | |
4064 | &timeouts, timeout_period, i, | |
393d2cc3 CM |
4065 | &flags); |
4066 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
4067 | ||
4068 | list_for_each_entry_safe(msg, msg2, &timeouts, link) | |
b2c03941 | 4069 | deliver_err_response(msg, IPMI_TIMEOUT_COMPLETION_CODE); |
b9675136 CM |
4070 | |
4071 | /* | |
4072 | * Maintenance mode handling. Check the timeout | |
4073 | * optimistically before we claim the lock. It may | |
4074 | * mean a timeout gets missed occasionally, but that | |
4075 | * only means the timeout gets extended by one period | |
4076 | * in that case. No big deal, and it avoids the lock | |
4077 | * most of the time. | |
4078 | */ | |
4079 | if (intf->auto_maintenance_timeout > 0) { | |
4080 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); | |
4081 | if (intf->auto_maintenance_timeout > 0) { | |
4082 | intf->auto_maintenance_timeout | |
4083 | -= timeout_period; | |
4084 | if (!intf->maintenance_mode | |
c70d7499 | 4085 | && (intf->auto_maintenance_timeout <= 0)) { |
b9675136 CM |
4086 | intf->maintenance_mode_enable = 0; |
4087 | maintenance_mode_update(intf); | |
4088 | } | |
4089 | } | |
4090 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, | |
4091 | flags); | |
4092 | } | |
1da177e4 | 4093 | } |
bca0324d | 4094 | rcu_read_unlock(); |
1da177e4 LT |
4095 | } |
4096 | ||
4097 | static void ipmi_request_event(void) | |
4098 | { | |
b2c03941 CM |
4099 | ipmi_smi_t intf; |
4100 | struct ipmi_smi_handlers *handlers; | |
1da177e4 | 4101 | |
bca0324d | 4102 | rcu_read_lock(); |
c70d7499 CM |
4103 | /* |
4104 | * Called from the timer, no need to check if handlers is | |
4105 | * valid. | |
4106 | */ | |
b2c03941 | 4107 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b9675136 CM |
4108 | /* No event requests when in maintenance mode. */ |
4109 | if (intf->maintenance_mode_enable) | |
4110 | continue; | |
4111 | ||
b2c03941 CM |
4112 | handlers = intf->handlers; |
4113 | if (handlers) | |
4114 | handlers->request_events(intf->send_info); | |
4115 | } | |
bca0324d | 4116 | rcu_read_unlock(); |
1da177e4 LT |
4117 | } |
4118 | ||
4119 | static struct timer_list ipmi_timer; | |
4120 | ||
ddac44b7 CM |
4121 | /* Call every ~1000 ms. */ |
4122 | #define IPMI_TIMEOUT_TIME 1000 | |
1da177e4 LT |
4123 | |
4124 | /* How many jiffies does it take to get to the timeout time. */ | |
4125 | #define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000) | |
4126 | ||
c70d7499 CM |
4127 | /* |
4128 | * Request events from the queue every second (this is the number of | |
4129 | * IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the | |
4130 | * future, IPMI will add a way to know immediately if an event is in | |
4131 | * the queue and this silliness can go away. | |
4132 | */ | |
1da177e4 LT |
4133 | #define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME)) |
4134 | ||
8f43f84f | 4135 | static atomic_t stop_operation; |
1da177e4 LT |
4136 | static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
4137 | ||
4138 | static void ipmi_timeout(unsigned long data) | |
4139 | { | |
8f43f84f | 4140 | if (atomic_read(&stop_operation)) |
1da177e4 | 4141 | return; |
1da177e4 LT |
4142 | |
4143 | ticks_to_req_ev--; | |
4144 | if (ticks_to_req_ev == 0) { | |
4145 | ipmi_request_event(); | |
4146 | ticks_to_req_ev = IPMI_REQUEST_EV_TIME; | |
4147 | } | |
4148 | ||
4149 | ipmi_timeout_handler(IPMI_TIMEOUT_TIME); | |
4150 | ||
8f43f84f | 4151 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); |
1da177e4 LT |
4152 | } |
4153 | ||
4154 | ||
4155 | static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0); | |
4156 | static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0); | |
4157 | ||
4158 | /* FIXME - convert these to slabs. */ | |
4159 | static void free_smi_msg(struct ipmi_smi_msg *msg) | |
4160 | { | |
4161 | atomic_dec(&smi_msg_inuse_count); | |
4162 | kfree(msg); | |
4163 | } | |
4164 | ||
4165 | struct ipmi_smi_msg *ipmi_alloc_smi_msg(void) | |
4166 | { | |
4167 | struct ipmi_smi_msg *rv; | |
4168 | rv = kmalloc(sizeof(struct ipmi_smi_msg), GFP_ATOMIC); | |
4169 | if (rv) { | |
4170 | rv->done = free_smi_msg; | |
4171 | rv->user_data = NULL; | |
4172 | atomic_inc(&smi_msg_inuse_count); | |
4173 | } | |
4174 | return rv; | |
4175 | } | |
c70d7499 | 4176 | EXPORT_SYMBOL(ipmi_alloc_smi_msg); |
1da177e4 LT |
4177 | |
4178 | static void free_recv_msg(struct ipmi_recv_msg *msg) | |
4179 | { | |
4180 | atomic_dec(&recv_msg_inuse_count); | |
4181 | kfree(msg); | |
4182 | } | |
4183 | ||
74006309 | 4184 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void) |
1da177e4 LT |
4185 | { |
4186 | struct ipmi_recv_msg *rv; | |
4187 | ||
4188 | rv = kmalloc(sizeof(struct ipmi_recv_msg), GFP_ATOMIC); | |
4189 | if (rv) { | |
a9eec556 | 4190 | rv->user = NULL; |
1da177e4 LT |
4191 | rv->done = free_recv_msg; |
4192 | atomic_inc(&recv_msg_inuse_count); | |
4193 | } | |
4194 | return rv; | |
4195 | } | |
4196 | ||
393d2cc3 CM |
4197 | void ipmi_free_recv_msg(struct ipmi_recv_msg *msg) |
4198 | { | |
4199 | if (msg->user) | |
4200 | kref_put(&msg->user->refcount, free_user); | |
4201 | msg->done(msg); | |
4202 | } | |
c70d7499 | 4203 | EXPORT_SYMBOL(ipmi_free_recv_msg); |
393d2cc3 | 4204 | |
1da177e4 LT |
4205 | #ifdef CONFIG_IPMI_PANIC_EVENT |
4206 | ||
4207 | static void dummy_smi_done_handler(struct ipmi_smi_msg *msg) | |
4208 | { | |
4209 | } | |
4210 | ||
4211 | static void dummy_recv_done_handler(struct ipmi_recv_msg *msg) | |
4212 | { | |
4213 | } | |
4214 | ||
4215 | #ifdef CONFIG_IPMI_PANIC_STRING | |
56a55ec6 | 4216 | static void event_receiver_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 4217 | { |
56a55ec6 CM |
4218 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
4219 | && (msg->msg.netfn == IPMI_NETFN_SENSOR_EVENT_RESPONSE) | |
4220 | && (msg->msg.cmd == IPMI_GET_EVENT_RECEIVER_CMD) | |
c70d7499 | 4221 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { |
1da177e4 | 4222 | /* A get event receiver command, save it. */ |
56a55ec6 CM |
4223 | intf->event_receiver = msg->msg.data[1]; |
4224 | intf->event_receiver_lun = msg->msg.data[2] & 0x3; | |
1da177e4 LT |
4225 | } |
4226 | } | |
4227 | ||
56a55ec6 | 4228 | static void device_id_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 4229 | { |
56a55ec6 CM |
4230 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
4231 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
4232 | && (msg->msg.cmd == IPMI_GET_DEVICE_ID_CMD) | |
c70d7499 CM |
4233 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { |
4234 | /* | |
4235 | * A get device id command, save if we are an event | |
4236 | * receiver or generator. | |
4237 | */ | |
56a55ec6 CM |
4238 | intf->local_sel_device = (msg->msg.data[6] >> 2) & 1; |
4239 | intf->local_event_generator = (msg->msg.data[6] >> 5) & 1; | |
1da177e4 LT |
4240 | } |
4241 | } | |
4242 | #endif | |
4243 | ||
4244 | static void send_panic_events(char *str) | |
4245 | { | |
4246 | struct kernel_ipmi_msg msg; | |
4247 | ipmi_smi_t intf; | |
4248 | unsigned char data[16]; | |
1da177e4 LT |
4249 | struct ipmi_system_interface_addr *si; |
4250 | struct ipmi_addr addr; | |
4251 | struct ipmi_smi_msg smi_msg; | |
4252 | struct ipmi_recv_msg recv_msg; | |
4253 | ||
4254 | si = (struct ipmi_system_interface_addr *) &addr; | |
4255 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
4256 | si->channel = IPMI_BMC_CHANNEL; | |
4257 | si->lun = 0; | |
4258 | ||
4259 | /* Fill in an event telling that we have failed. */ | |
4260 | msg.netfn = 0x04; /* Sensor or Event. */ | |
4261 | msg.cmd = 2; /* Platform event command. */ | |
4262 | msg.data = data; | |
4263 | msg.data_len = 8; | |
cda315ab | 4264 | data[0] = 0x41; /* Kernel generator ID, IPMI table 5-4 */ |
1da177e4 LT |
4265 | data[1] = 0x03; /* This is for IPMI 1.0. */ |
4266 | data[2] = 0x20; /* OS Critical Stop, IPMI table 36-3 */ | |
4267 | data[4] = 0x6f; /* Sensor specific, IPMI table 36-1 */ | |
4268 | data[5] = 0xa1; /* Runtime stop OEM bytes 2 & 3. */ | |
4269 | ||
c70d7499 CM |
4270 | /* |
4271 | * Put a few breadcrumbs in. Hopefully later we can add more things | |
4272 | * to make the panic events more useful. | |
4273 | */ | |
1da177e4 LT |
4274 | if (str) { |
4275 | data[3] = str[0]; | |
4276 | data[6] = str[1]; | |
4277 | data[7] = str[2]; | |
4278 | } | |
4279 | ||
4280 | smi_msg.done = dummy_smi_done_handler; | |
4281 | recv_msg.done = dummy_recv_done_handler; | |
4282 | ||
4283 | /* For every registered interface, send the event. */ | |
bca0324d | 4284 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b2c03941 CM |
4285 | if (!intf->handlers) |
4286 | /* Interface is not ready. */ | |
1da177e4 LT |
4287 | continue; |
4288 | ||
5956dce1 | 4289 | intf->run_to_completion = 1; |
1da177e4 LT |
4290 | /* Send the event announcing the panic. */ |
4291 | intf->handlers->set_run_to_completion(intf->send_info, 1); | |
4292 | i_ipmi_request(NULL, | |
4293 | intf, | |
4294 | &addr, | |
4295 | 0, | |
4296 | &msg, | |
56a55ec6 | 4297 | intf, |
1da177e4 LT |
4298 | &smi_msg, |
4299 | &recv_msg, | |
4300 | 0, | |
c14979b9 CM |
4301 | intf->channels[0].address, |
4302 | intf->channels[0].lun, | |
1da177e4 LT |
4303 | 0, 1); /* Don't retry, and don't wait. */ |
4304 | } | |
4305 | ||
4306 | #ifdef CONFIG_IPMI_PANIC_STRING | |
c70d7499 CM |
4307 | /* |
4308 | * On every interface, dump a bunch of OEM event holding the | |
4309 | * string. | |
4310 | */ | |
4311 | if (!str) | |
1da177e4 LT |
4312 | return; |
4313 | ||
bca0324d CM |
4314 | /* For every registered interface, send the event. */ |
4315 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
1da177e4 LT |
4316 | char *p = str; |
4317 | struct ipmi_ipmb_addr *ipmb; | |
4318 | int j; | |
4319 | ||
bca0324d CM |
4320 | if (intf->intf_num == -1) |
4321 | /* Interface was not ready yet. */ | |
1da177e4 LT |
4322 | continue; |
4323 | ||
78ba2faf CM |
4324 | /* |
4325 | * intf_num is used as an marker to tell if the | |
4326 | * interface is valid. Thus we need a read barrier to | |
4327 | * make sure data fetched before checking intf_num | |
4328 | * won't be used. | |
4329 | */ | |
4330 | smp_rmb(); | |
4331 | ||
c70d7499 CM |
4332 | /* |
4333 | * First job here is to figure out where to send the | |
4334 | * OEM events. There's no way in IPMI to send OEM | |
4335 | * events using an event send command, so we have to | |
4336 | * find the SEL to put them in and stick them in | |
4337 | * there. | |
4338 | */ | |
1da177e4 LT |
4339 | |
4340 | /* Get capabilities from the get device id. */ | |
4341 | intf->local_sel_device = 0; | |
4342 | intf->local_event_generator = 0; | |
4343 | intf->event_receiver = 0; | |
4344 | ||
4345 | /* Request the device info from the local MC. */ | |
4346 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
4347 | msg.cmd = IPMI_GET_DEVICE_ID_CMD; | |
4348 | msg.data = NULL; | |
4349 | msg.data_len = 0; | |
4350 | intf->null_user_handler = device_id_fetcher; | |
4351 | i_ipmi_request(NULL, | |
4352 | intf, | |
4353 | &addr, | |
4354 | 0, | |
4355 | &msg, | |
56a55ec6 | 4356 | intf, |
1da177e4 LT |
4357 | &smi_msg, |
4358 | &recv_msg, | |
4359 | 0, | |
c14979b9 CM |
4360 | intf->channels[0].address, |
4361 | intf->channels[0].lun, | |
1da177e4 LT |
4362 | 0, 1); /* Don't retry, and don't wait. */ |
4363 | ||
4364 | if (intf->local_event_generator) { | |
4365 | /* Request the event receiver from the local MC. */ | |
4366 | msg.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; | |
4367 | msg.cmd = IPMI_GET_EVENT_RECEIVER_CMD; | |
4368 | msg.data = NULL; | |
4369 | msg.data_len = 0; | |
4370 | intf->null_user_handler = event_receiver_fetcher; | |
4371 | i_ipmi_request(NULL, | |
4372 | intf, | |
4373 | &addr, | |
4374 | 0, | |
4375 | &msg, | |
56a55ec6 | 4376 | intf, |
1da177e4 LT |
4377 | &smi_msg, |
4378 | &recv_msg, | |
4379 | 0, | |
c14979b9 CM |
4380 | intf->channels[0].address, |
4381 | intf->channels[0].lun, | |
1da177e4 LT |
4382 | 0, 1); /* no retry, and no wait. */ |
4383 | } | |
4384 | intf->null_user_handler = NULL; | |
4385 | ||
c70d7499 CM |
4386 | /* |
4387 | * Validate the event receiver. The low bit must not | |
4388 | * be 1 (it must be a valid IPMB address), it cannot | |
4389 | * be zero, and it must not be my address. | |
4390 | */ | |
4391 | if (((intf->event_receiver & 1) == 0) | |
1da177e4 | 4392 | && (intf->event_receiver != 0) |
c70d7499 CM |
4393 | && (intf->event_receiver != intf->channels[0].address)) { |
4394 | /* | |
4395 | * The event receiver is valid, send an IPMB | |
4396 | * message. | |
4397 | */ | |
1da177e4 LT |
4398 | ipmb = (struct ipmi_ipmb_addr *) &addr; |
4399 | ipmb->addr_type = IPMI_IPMB_ADDR_TYPE; | |
4400 | ipmb->channel = 0; /* FIXME - is this right? */ | |
4401 | ipmb->lun = intf->event_receiver_lun; | |
4402 | ipmb->slave_addr = intf->event_receiver; | |
4403 | } else if (intf->local_sel_device) { | |
c70d7499 CM |
4404 | /* |
4405 | * The event receiver was not valid (or was | |
4406 | * me), but I am an SEL device, just dump it | |
4407 | * in my SEL. | |
4408 | */ | |
1da177e4 LT |
4409 | si = (struct ipmi_system_interface_addr *) &addr; |
4410 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
4411 | si->channel = IPMI_BMC_CHANNEL; | |
4412 | si->lun = 0; | |
4413 | } else | |
4414 | continue; /* No where to send the event. */ | |
4415 | ||
1da177e4 LT |
4416 | msg.netfn = IPMI_NETFN_STORAGE_REQUEST; /* Storage. */ |
4417 | msg.cmd = IPMI_ADD_SEL_ENTRY_CMD; | |
4418 | msg.data = data; | |
4419 | msg.data_len = 16; | |
4420 | ||
4421 | j = 0; | |
4422 | while (*p) { | |
4423 | int size = strlen(p); | |
4424 | ||
4425 | if (size > 11) | |
4426 | size = 11; | |
4427 | data[0] = 0; | |
4428 | data[1] = 0; | |
4429 | data[2] = 0xf0; /* OEM event without timestamp. */ | |
c14979b9 | 4430 | data[3] = intf->channels[0].address; |
1da177e4 | 4431 | data[4] = j++; /* sequence # */ |
c70d7499 CM |
4432 | /* |
4433 | * Always give 11 bytes, so strncpy will fill | |
4434 | * it with zeroes for me. | |
4435 | */ | |
1da177e4 LT |
4436 | strncpy(data+5, p, 11); |
4437 | p += size; | |
4438 | ||
4439 | i_ipmi_request(NULL, | |
4440 | intf, | |
4441 | &addr, | |
4442 | 0, | |
4443 | &msg, | |
56a55ec6 | 4444 | intf, |
1da177e4 LT |
4445 | &smi_msg, |
4446 | &recv_msg, | |
4447 | 0, | |
c14979b9 CM |
4448 | intf->channels[0].address, |
4449 | intf->channels[0].lun, | |
1da177e4 LT |
4450 | 0, 1); /* no retry, and no wait. */ |
4451 | } | |
c70d7499 | 4452 | } |
1da177e4 LT |
4453 | #endif /* CONFIG_IPMI_PANIC_STRING */ |
4454 | } | |
4455 | #endif /* CONFIG_IPMI_PANIC_EVENT */ | |
4456 | ||
0c8204b3 | 4457 | static int has_panicked; |
1da177e4 LT |
4458 | |
4459 | static int panic_event(struct notifier_block *this, | |
4460 | unsigned long event, | |
c70d7499 | 4461 | void *ptr) |
1da177e4 | 4462 | { |
1da177e4 LT |
4463 | ipmi_smi_t intf; |
4464 | ||
f18190bd | 4465 | if (has_panicked) |
1da177e4 | 4466 | return NOTIFY_DONE; |
f18190bd | 4467 | has_panicked = 1; |
1da177e4 LT |
4468 | |
4469 | /* For every registered interface, set it to run to completion. */ | |
bca0324d | 4470 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b2c03941 CM |
4471 | if (!intf->handlers) |
4472 | /* Interface is not ready. */ | |
1da177e4 LT |
4473 | continue; |
4474 | ||
5956dce1 | 4475 | intf->run_to_completion = 1; |
1da177e4 LT |
4476 | intf->handlers->set_run_to_completion(intf->send_info, 1); |
4477 | } | |
4478 | ||
4479 | #ifdef CONFIG_IPMI_PANIC_EVENT | |
4480 | send_panic_events(ptr); | |
4481 | #endif | |
4482 | ||
4483 | return NOTIFY_DONE; | |
4484 | } | |
4485 | ||
4486 | static struct notifier_block panic_block = { | |
4487 | .notifier_call = panic_event, | |
4488 | .next = NULL, | |
4489 | .priority = 200 /* priority: INT_MAX >= x >= 0 */ | |
4490 | }; | |
4491 | ||
4492 | static int ipmi_init_msghandler(void) | |
4493 | { | |
50c812b2 | 4494 | int rv; |
1da177e4 LT |
4495 | |
4496 | if (initialized) | |
4497 | return 0; | |
4498 | ||
fe2d5ffc | 4499 | rv = driver_register(&ipmidriver.driver); |
50c812b2 CM |
4500 | if (rv) { |
4501 | printk(KERN_ERR PFX "Could not register IPMI driver\n"); | |
4502 | return rv; | |
4503 | } | |
4504 | ||
1da177e4 | 4505 | printk(KERN_INFO "ipmi message handler version " |
1fdd75bd | 4506 | IPMI_DRIVER_VERSION "\n"); |
1da177e4 | 4507 | |
3b625943 | 4508 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
4509 | proc_ipmi_root = proc_mkdir("ipmi", NULL); |
4510 | if (!proc_ipmi_root) { | |
4511 | printk(KERN_ERR PFX "Unable to create IPMI proc dir"); | |
4512 | return -ENOMEM; | |
4513 | } | |
4514 | ||
3b625943 | 4515 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 4516 | |
409035e0 CM |
4517 | setup_timer(&ipmi_timer, ipmi_timeout, 0); |
4518 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); | |
1da177e4 | 4519 | |
e041c683 | 4520 | atomic_notifier_chain_register(&panic_notifier_list, &panic_block); |
1da177e4 LT |
4521 | |
4522 | initialized = 1; | |
4523 | ||
4524 | return 0; | |
4525 | } | |
4526 | ||
60ee6d5f | 4527 | static int __init ipmi_init_msghandler_mod(void) |
1da177e4 LT |
4528 | { |
4529 | ipmi_init_msghandler(); | |
4530 | return 0; | |
4531 | } | |
4532 | ||
60ee6d5f | 4533 | static void __exit cleanup_ipmi(void) |
1da177e4 LT |
4534 | { |
4535 | int count; | |
4536 | ||
4537 | if (!initialized) | |
4538 | return; | |
4539 | ||
e041c683 | 4540 | atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block); |
1da177e4 | 4541 | |
c70d7499 CM |
4542 | /* |
4543 | * This can't be called if any interfaces exist, so no worry | |
4544 | * about shutting down the interfaces. | |
4545 | */ | |
1da177e4 | 4546 | |
c70d7499 CM |
4547 | /* |
4548 | * Tell the timer to stop, then wait for it to stop. This | |
4549 | * avoids problems with race conditions removing the timer | |
4550 | * here. | |
4551 | */ | |
8f43f84f CM |
4552 | atomic_inc(&stop_operation); |
4553 | del_timer_sync(&ipmi_timer); | |
1da177e4 | 4554 | |
3b625943 | 4555 | #ifdef CONFIG_PROC_FS |
3542ae4c | 4556 | remove_proc_entry(proc_ipmi_root->name, NULL); |
3b625943 | 4557 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 4558 | |
fe2d5ffc | 4559 | driver_unregister(&ipmidriver.driver); |
50c812b2 | 4560 | |
1da177e4 LT |
4561 | initialized = 0; |
4562 | ||
4563 | /* Check for buffer leaks. */ | |
4564 | count = atomic_read(&smi_msg_inuse_count); | |
4565 | if (count != 0) | |
4566 | printk(KERN_WARNING PFX "SMI message count %d at exit\n", | |
4567 | count); | |
4568 | count = atomic_read(&recv_msg_inuse_count); | |
4569 | if (count != 0) | |
4570 | printk(KERN_WARNING PFX "recv message count %d at exit\n", | |
4571 | count); | |
4572 | } | |
4573 | module_exit(cleanup_ipmi); | |
4574 | ||
4575 | module_init(ipmi_init_msghandler_mod); | |
4576 | MODULE_LICENSE("GPL"); | |
1fdd75bd | 4577 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
c70d7499 CM |
4578 | MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI" |
4579 | " interface."); | |
1fdd75bd | 4580 | MODULE_VERSION(IPMI_DRIVER_VERSION); |