Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * ipmi_msghandler.c | |
3 | * | |
4 | * Incoming and outgoing message routing for an IPMI interface. | |
5 | * | |
6 | * Author: MontaVista Software, Inc. | |
7 | * Corey Minyard <minyard@mvista.com> | |
8 | * source@mvista.com | |
9 | * | |
10 | * Copyright 2002 MontaVista Software Inc. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | * | |
18 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
19 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
20 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
23 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS | |
24 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
26 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
27 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
28 | * | |
29 | * You should have received a copy of the GNU General Public License along | |
30 | * with this program; if not, write to the Free Software Foundation, Inc., | |
31 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
32 | */ | |
33 | ||
1da177e4 LT |
34 | #include <linux/module.h> |
35 | #include <linux/errno.h> | |
36 | #include <asm/system.h> | |
1da177e4 | 37 | #include <linux/poll.h> |
a99bbaf5 | 38 | #include <linux/sched.h> |
1da177e4 | 39 | #include <linux/spinlock.h> |
d6dfd131 | 40 | #include <linux/mutex.h> |
1da177e4 LT |
41 | #include <linux/slab.h> |
42 | #include <linux/ipmi.h> | |
43 | #include <linux/ipmi_smi.h> | |
44 | #include <linux/notifier.h> | |
45 | #include <linux/init.h> | |
46 | #include <linux/proc_fs.h> | |
393d2cc3 | 47 | #include <linux/rcupdate.h> |
1da177e4 LT |
48 | |
49 | #define PFX "IPMI message handler: " | |
1fdd75bd | 50 | |
f7caa1b5 | 51 | #define IPMI_DRIVER_VERSION "39.2" |
1da177e4 LT |
52 | |
53 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void); | |
54 | static int ipmi_init_msghandler(void); | |
55 | ||
0c8204b3 | 56 | static int initialized; |
1da177e4 | 57 | |
3b625943 | 58 | #ifdef CONFIG_PROC_FS |
0c8204b3 | 59 | static struct proc_dir_entry *proc_ipmi_root; |
3b625943 | 60 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 61 | |
b9675136 CM |
62 | /* Remain in auto-maintenance mode for this amount of time (in ms). */ |
63 | #define IPMI_MAINTENANCE_MODE_TIMEOUT 30000 | |
64 | ||
1da177e4 LT |
65 | #define MAX_EVENTS_IN_QUEUE 25 |
66 | ||
c70d7499 CM |
67 | /* |
68 | * Don't let a message sit in a queue forever, always time it with at lest | |
69 | * the max message timer. This is in milliseconds. | |
70 | */ | |
1da177e4 LT |
71 | #define MAX_MSG_TIMEOUT 60000 |
72 | ||
393d2cc3 CM |
73 | /* |
74 | * The main "user" data structure. | |
75 | */ | |
c70d7499 | 76 | struct ipmi_user { |
1da177e4 LT |
77 | struct list_head link; |
78 | ||
393d2cc3 CM |
79 | /* Set to "0" when the user is destroyed. */ |
80 | int valid; | |
81 | ||
82 | struct kref refcount; | |
83 | ||
1da177e4 LT |
84 | /* The upper layer that handles receive messages. */ |
85 | struct ipmi_user_hndl *handler; | |
86 | void *handler_data; | |
87 | ||
88 | /* The interface this user is bound to. */ | |
89 | ipmi_smi_t intf; | |
90 | ||
91 | /* Does this interface receive IPMI events? */ | |
92 | int gets_events; | |
93 | }; | |
94 | ||
c70d7499 | 95 | struct cmd_rcvr { |
1da177e4 LT |
96 | struct list_head link; |
97 | ||
98 | ipmi_user_t user; | |
99 | unsigned char netfn; | |
100 | unsigned char cmd; | |
c69c3127 | 101 | unsigned int chans; |
393d2cc3 CM |
102 | |
103 | /* | |
104 | * This is used to form a linked lised during mass deletion. | |
105 | * Since this is in an RCU list, we cannot use the link above | |
106 | * or change any data until the RCU period completes. So we | |
107 | * use this next variable during mass deletion so we can have | |
108 | * a list and don't have to wait and restart the search on | |
c70d7499 CM |
109 | * every individual deletion of a command. |
110 | */ | |
393d2cc3 | 111 | struct cmd_rcvr *next; |
1da177e4 LT |
112 | }; |
113 | ||
c70d7499 | 114 | struct seq_table { |
1da177e4 LT |
115 | unsigned int inuse : 1; |
116 | unsigned int broadcast : 1; | |
117 | ||
118 | unsigned long timeout; | |
119 | unsigned long orig_timeout; | |
120 | unsigned int retries_left; | |
121 | ||
c70d7499 CM |
122 | /* |
123 | * To verify on an incoming send message response that this is | |
124 | * the message that the response is for, we keep a sequence id | |
125 | * and increment it every time we send a message. | |
126 | */ | |
1da177e4 LT |
127 | long seqid; |
128 | ||
c70d7499 CM |
129 | /* |
130 | * This is held so we can properly respond to the message on a | |
131 | * timeout, and it is used to hold the temporary data for | |
132 | * retransmission, too. | |
133 | */ | |
1da177e4 LT |
134 | struct ipmi_recv_msg *recv_msg; |
135 | }; | |
136 | ||
c70d7499 CM |
137 | /* |
138 | * Store the information in a msgid (long) to allow us to find a | |
139 | * sequence table entry from the msgid. | |
140 | */ | |
1da177e4 LT |
141 | #define STORE_SEQ_IN_MSGID(seq, seqid) (((seq&0xff)<<26) | (seqid&0x3ffffff)) |
142 | ||
143 | #define GET_SEQ_FROM_MSGID(msgid, seq, seqid) \ | |
144 | do { \ | |
145 | seq = ((msgid >> 26) & 0x3f); \ | |
146 | seqid = (msgid & 0x3fffff); \ | |
c70d7499 | 147 | } while (0) |
1da177e4 LT |
148 | |
149 | #define NEXT_SEQID(seqid) (((seqid) + 1) & 0x3fffff) | |
150 | ||
c70d7499 | 151 | struct ipmi_channel { |
1da177e4 LT |
152 | unsigned char medium; |
153 | unsigned char protocol; | |
c14979b9 | 154 | |
c70d7499 CM |
155 | /* |
156 | * My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, | |
157 | * but may be changed by the user. | |
158 | */ | |
c14979b9 CM |
159 | unsigned char address; |
160 | ||
c70d7499 CM |
161 | /* |
162 | * My LUN. This should generally stay the SMS LUN, but just in | |
163 | * case... | |
164 | */ | |
c14979b9 | 165 | unsigned char lun; |
1da177e4 LT |
166 | }; |
167 | ||
3b625943 | 168 | #ifdef CONFIG_PROC_FS |
c70d7499 | 169 | struct ipmi_proc_entry { |
1da177e4 LT |
170 | char *name; |
171 | struct ipmi_proc_entry *next; | |
172 | }; | |
3b625943 | 173 | #endif |
1da177e4 | 174 | |
c70d7499 | 175 | struct bmc_device { |
50c812b2 CM |
176 | struct platform_device *dev; |
177 | struct ipmi_device_id id; | |
178 | unsigned char guid[16]; | |
179 | int guid_set; | |
180 | ||
181 | struct kref refcount; | |
182 | ||
183 | /* bmc device attributes */ | |
184 | struct device_attribute device_id_attr; | |
185 | struct device_attribute provides_dev_sdrs_attr; | |
186 | struct device_attribute revision_attr; | |
187 | struct device_attribute firmware_rev_attr; | |
188 | struct device_attribute version_attr; | |
189 | struct device_attribute add_dev_support_attr; | |
190 | struct device_attribute manufacturer_id_attr; | |
191 | struct device_attribute product_id_attr; | |
192 | struct device_attribute guid_attr; | |
193 | struct device_attribute aux_firmware_rev_attr; | |
194 | }; | |
195 | ||
b2655f26 KB |
196 | /* |
197 | * Various statistics for IPMI, these index stats[] in the ipmi_smi | |
198 | * structure. | |
199 | */ | |
73f2bdb9 CM |
200 | enum ipmi_stat_indexes { |
201 | /* Commands we got from the user that were invalid. */ | |
202 | IPMI_STAT_sent_invalid_commands = 0, | |
b2655f26 | 203 | |
73f2bdb9 CM |
204 | /* Commands we sent to the MC. */ |
205 | IPMI_STAT_sent_local_commands, | |
b2655f26 | 206 | |
73f2bdb9 CM |
207 | /* Responses from the MC that were delivered to a user. */ |
208 | IPMI_STAT_handled_local_responses, | |
b2655f26 | 209 | |
73f2bdb9 CM |
210 | /* Responses from the MC that were not delivered to a user. */ |
211 | IPMI_STAT_unhandled_local_responses, | |
b2655f26 | 212 | |
73f2bdb9 CM |
213 | /* Commands we sent out to the IPMB bus. */ |
214 | IPMI_STAT_sent_ipmb_commands, | |
b2655f26 | 215 | |
73f2bdb9 CM |
216 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
217 | IPMI_STAT_sent_ipmb_command_errs, | |
b2655f26 | 218 | |
73f2bdb9 CM |
219 | /* Each retransmit increments this count. */ |
220 | IPMI_STAT_retransmitted_ipmb_commands, | |
b2655f26 | 221 | |
73f2bdb9 CM |
222 | /* |
223 | * When a message times out (runs out of retransmits) this is | |
224 | * incremented. | |
225 | */ | |
226 | IPMI_STAT_timed_out_ipmb_commands, | |
b2655f26 | 227 | |
73f2bdb9 CM |
228 | /* |
229 | * This is like above, but for broadcasts. Broadcasts are | |
230 | * *not* included in the above count (they are expected to | |
231 | * time out). | |
232 | */ | |
233 | IPMI_STAT_timed_out_ipmb_broadcasts, | |
b2655f26 | 234 | |
73f2bdb9 CM |
235 | /* Responses I have sent to the IPMB bus. */ |
236 | IPMI_STAT_sent_ipmb_responses, | |
b2655f26 | 237 | |
73f2bdb9 CM |
238 | /* The response was delivered to the user. */ |
239 | IPMI_STAT_handled_ipmb_responses, | |
b2655f26 | 240 | |
73f2bdb9 CM |
241 | /* The response had invalid data in it. */ |
242 | IPMI_STAT_invalid_ipmb_responses, | |
b2655f26 | 243 | |
73f2bdb9 CM |
244 | /* The response didn't have anyone waiting for it. */ |
245 | IPMI_STAT_unhandled_ipmb_responses, | |
b2655f26 | 246 | |
73f2bdb9 CM |
247 | /* Commands we sent out to the IPMB bus. */ |
248 | IPMI_STAT_sent_lan_commands, | |
b2655f26 | 249 | |
73f2bdb9 CM |
250 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
251 | IPMI_STAT_sent_lan_command_errs, | |
b2655f26 | 252 | |
73f2bdb9 CM |
253 | /* Each retransmit increments this count. */ |
254 | IPMI_STAT_retransmitted_lan_commands, | |
b2655f26 | 255 | |
73f2bdb9 CM |
256 | /* |
257 | * When a message times out (runs out of retransmits) this is | |
258 | * incremented. | |
259 | */ | |
260 | IPMI_STAT_timed_out_lan_commands, | |
261 | ||
262 | /* Responses I have sent to the IPMB bus. */ | |
263 | IPMI_STAT_sent_lan_responses, | |
b2655f26 | 264 | |
73f2bdb9 CM |
265 | /* The response was delivered to the user. */ |
266 | IPMI_STAT_handled_lan_responses, | |
b2655f26 | 267 | |
73f2bdb9 CM |
268 | /* The response had invalid data in it. */ |
269 | IPMI_STAT_invalid_lan_responses, | |
b2655f26 | 270 | |
73f2bdb9 CM |
271 | /* The response didn't have anyone waiting for it. */ |
272 | IPMI_STAT_unhandled_lan_responses, | |
b2655f26 | 273 | |
73f2bdb9 CM |
274 | /* The command was delivered to the user. */ |
275 | IPMI_STAT_handled_commands, | |
b2655f26 | 276 | |
73f2bdb9 CM |
277 | /* The command had invalid data in it. */ |
278 | IPMI_STAT_invalid_commands, | |
b2655f26 | 279 | |
73f2bdb9 CM |
280 | /* The command didn't have anyone waiting for it. */ |
281 | IPMI_STAT_unhandled_commands, | |
b2655f26 | 282 | |
73f2bdb9 CM |
283 | /* Invalid data in an event. */ |
284 | IPMI_STAT_invalid_events, | |
b2655f26 | 285 | |
73f2bdb9 CM |
286 | /* Events that were received with the proper format. */ |
287 | IPMI_STAT_events, | |
b2655f26 | 288 | |
25176ed6 CM |
289 | /* Retransmissions on IPMB that failed. */ |
290 | IPMI_STAT_dropped_rexmit_ipmb_commands, | |
291 | ||
292 | /* Retransmissions on LAN that failed. */ | |
293 | IPMI_STAT_dropped_rexmit_lan_commands, | |
b2655f26 | 294 | |
73f2bdb9 CM |
295 | /* This *must* remain last, add new values above this. */ |
296 | IPMI_NUM_STATS | |
297 | }; | |
b2655f26 KB |
298 | |
299 | ||
1da177e4 | 300 | #define IPMI_IPMB_NUM_SEQ 64 |
c14979b9 | 301 | #define IPMI_MAX_CHANNELS 16 |
c70d7499 | 302 | struct ipmi_smi { |
1da177e4 LT |
303 | /* What interface number are we? */ |
304 | int intf_num; | |
305 | ||
393d2cc3 CM |
306 | struct kref refcount; |
307 | ||
bca0324d CM |
308 | /* Used for a list of interfaces. */ |
309 | struct list_head link; | |
310 | ||
c70d7499 CM |
311 | /* |
312 | * The list of upper layers that are using me. seq_lock | |
313 | * protects this. | |
314 | */ | |
393d2cc3 | 315 | struct list_head users; |
1da177e4 | 316 | |
b2c03941 CM |
317 | /* Information to supply to users. */ |
318 | unsigned char ipmi_version_major; | |
319 | unsigned char ipmi_version_minor; | |
320 | ||
1da177e4 LT |
321 | /* Used for wake ups at startup. */ |
322 | wait_queue_head_t waitq; | |
323 | ||
50c812b2 CM |
324 | struct bmc_device *bmc; |
325 | char *my_dev_name; | |
759643b8 | 326 | char *sysfs_name; |
1da177e4 | 327 | |
c70d7499 CM |
328 | /* |
329 | * This is the lower-layer's sender routine. Note that you | |
b2c03941 CM |
330 | * must either be holding the ipmi_interfaces_mutex or be in |
331 | * an umpreemptible region to use this. You must fetch the | |
c70d7499 CM |
332 | * value into a local variable and make sure it is not NULL. |
333 | */ | |
1da177e4 LT |
334 | struct ipmi_smi_handlers *handlers; |
335 | void *send_info; | |
336 | ||
3b625943 | 337 | #ifdef CONFIG_PROC_FS |
ac019151 CM |
338 | /* A list of proc entries for this interface. */ |
339 | struct mutex proc_entry_lock; | |
1da177e4 | 340 | struct ipmi_proc_entry *proc_entries; |
3b625943 | 341 | #endif |
1da177e4 | 342 | |
50c812b2 CM |
343 | /* Driver-model device for the system interface. */ |
344 | struct device *si_dev; | |
345 | ||
c70d7499 CM |
346 | /* |
347 | * A table of sequence numbers for this interface. We use the | |
348 | * sequence numbers for IPMB messages that go out of the | |
349 | * interface to match them up with their responses. A routine | |
350 | * is called periodically to time the items in this list. | |
351 | */ | |
1da177e4 LT |
352 | spinlock_t seq_lock; |
353 | struct seq_table seq_table[IPMI_IPMB_NUM_SEQ]; | |
354 | int curr_seq; | |
355 | ||
c70d7499 CM |
356 | /* |
357 | * Messages that were delayed for some reason (out of memory, | |
358 | * for instance), will go in here to be processed later in a | |
359 | * periodic timer interrupt. | |
360 | */ | |
1da177e4 LT |
361 | spinlock_t waiting_msgs_lock; |
362 | struct list_head waiting_msgs; | |
363 | ||
c70d7499 CM |
364 | /* |
365 | * The list of command receivers that are registered for commands | |
366 | * on this interface. | |
367 | */ | |
d6dfd131 | 368 | struct mutex cmd_rcvrs_mutex; |
1da177e4 LT |
369 | struct list_head cmd_rcvrs; |
370 | ||
c70d7499 CM |
371 | /* |
372 | * Events that were queues because no one was there to receive | |
373 | * them. | |
374 | */ | |
1da177e4 LT |
375 | spinlock_t events_lock; /* For dealing with event stuff. */ |
376 | struct list_head waiting_events; | |
377 | unsigned int waiting_events_count; /* How many events in queue? */ | |
87ebd06f CM |
378 | char delivering_events; |
379 | char event_msg_printed; | |
1da177e4 | 380 | |
c70d7499 CM |
381 | /* |
382 | * The event receiver for my BMC, only really used at panic | |
383 | * shutdown as a place to store this. | |
384 | */ | |
1da177e4 LT |
385 | unsigned char event_receiver; |
386 | unsigned char event_receiver_lun; | |
387 | unsigned char local_sel_device; | |
388 | unsigned char local_event_generator; | |
389 | ||
b9675136 CM |
390 | /* For handling of maintenance mode. */ |
391 | int maintenance_mode; | |
392 | int maintenance_mode_enable; | |
393 | int auto_maintenance_timeout; | |
394 | spinlock_t maintenance_mode_lock; /* Used in a timer... */ | |
395 | ||
c70d7499 CM |
396 | /* |
397 | * A cheap hack, if this is non-null and a message to an | |
398 | * interface comes in with a NULL user, call this routine with | |
399 | * it. Note that the message will still be freed by the | |
400 | * caller. This only works on the system interface. | |
401 | */ | |
56a55ec6 | 402 | void (*null_user_handler)(ipmi_smi_t intf, struct ipmi_recv_msg *msg); |
1da177e4 | 403 | |
c70d7499 CM |
404 | /* |
405 | * When we are scanning the channels for an SMI, this will | |
406 | * tell which channel we are scanning. | |
407 | */ | |
1da177e4 LT |
408 | int curr_channel; |
409 | ||
410 | /* Channel information */ | |
411 | struct ipmi_channel channels[IPMI_MAX_CHANNELS]; | |
412 | ||
413 | /* Proc FS stuff. */ | |
414 | struct proc_dir_entry *proc_dir; | |
415 | char proc_dir_name[10]; | |
416 | ||
b2655f26 | 417 | atomic_t stats[IPMI_NUM_STATS]; |
5956dce1 KB |
418 | |
419 | /* | |
420 | * run_to_completion duplicate of smb_info, smi_info | |
421 | * and ipmi_serial_info structures. Used to decrease numbers of | |
422 | * parameters passed by "low" level IPMI code. | |
423 | */ | |
424 | int run_to_completion; | |
1da177e4 | 425 | }; |
50c812b2 | 426 | #define to_si_intf_from_dev(device) container_of(device, struct ipmi_smi, dev) |
1da177e4 | 427 | |
50c812b2 CM |
428 | /** |
429 | * The driver model view of the IPMI messaging driver. | |
430 | */ | |
fe2d5ffc DW |
431 | static struct platform_driver ipmidriver = { |
432 | .driver = { | |
433 | .name = "ipmi", | |
434 | .bus = &platform_bus_type | |
435 | } | |
50c812b2 CM |
436 | }; |
437 | static DEFINE_MUTEX(ipmidriver_mutex); | |
438 | ||
bed9759b | 439 | static LIST_HEAD(ipmi_interfaces); |
bca0324d | 440 | static DEFINE_MUTEX(ipmi_interfaces_mutex); |
1da177e4 | 441 | |
c70d7499 CM |
442 | /* |
443 | * List of watchers that want to know when smi's are added and deleted. | |
444 | */ | |
bed9759b | 445 | static LIST_HEAD(smi_watchers); |
b2c03941 | 446 | static DEFINE_MUTEX(smi_watchers_mutex); |
1da177e4 | 447 | |
393d2cc3 | 448 | |
b2655f26 KB |
449 | #define ipmi_inc_stat(intf, stat) \ |
450 | atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat]) | |
451 | #define ipmi_get_stat(intf, stat) \ | |
452 | ((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat])) | |
453 | ||
25176ed6 CM |
454 | static int is_lan_addr(struct ipmi_addr *addr) |
455 | { | |
456 | return addr->addr_type == IPMI_LAN_ADDR_TYPE; | |
457 | } | |
458 | ||
459 | static int is_ipmb_addr(struct ipmi_addr *addr) | |
460 | { | |
461 | return addr->addr_type == IPMI_IPMB_ADDR_TYPE; | |
462 | } | |
463 | ||
464 | static int is_ipmb_bcast_addr(struct ipmi_addr *addr) | |
465 | { | |
466 | return addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE; | |
467 | } | |
b2655f26 | 468 | |
393d2cc3 CM |
469 | static void free_recv_msg_list(struct list_head *q) |
470 | { | |
471 | struct ipmi_recv_msg *msg, *msg2; | |
472 | ||
473 | list_for_each_entry_safe(msg, msg2, q, link) { | |
474 | list_del(&msg->link); | |
475 | ipmi_free_recv_msg(msg); | |
476 | } | |
477 | } | |
478 | ||
f3ce6a0e CM |
479 | static void free_smi_msg_list(struct list_head *q) |
480 | { | |
481 | struct ipmi_smi_msg *msg, *msg2; | |
482 | ||
483 | list_for_each_entry_safe(msg, msg2, q, link) { | |
484 | list_del(&msg->link); | |
485 | ipmi_free_smi_msg(msg); | |
486 | } | |
487 | } | |
488 | ||
393d2cc3 CM |
489 | static void clean_up_interface_data(ipmi_smi_t intf) |
490 | { | |
491 | int i; | |
492 | struct cmd_rcvr *rcvr, *rcvr2; | |
393d2cc3 CM |
493 | struct list_head list; |
494 | ||
f3ce6a0e | 495 | free_smi_msg_list(&intf->waiting_msgs); |
393d2cc3 CM |
496 | free_recv_msg_list(&intf->waiting_events); |
497 | ||
78ba2faf CM |
498 | /* |
499 | * Wholesale remove all the entries from the list in the | |
500 | * interface and wait for RCU to know that none are in use. | |
501 | */ | |
d6dfd131 | 502 | mutex_lock(&intf->cmd_rcvrs_mutex); |
78ba2faf CM |
503 | INIT_LIST_HEAD(&list); |
504 | list_splice_init_rcu(&intf->cmd_rcvrs, &list, synchronize_rcu); | |
d6dfd131 | 505 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
506 | |
507 | list_for_each_entry_safe(rcvr, rcvr2, &list, link) | |
508 | kfree(rcvr); | |
509 | ||
510 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { | |
511 | if ((intf->seq_table[i].inuse) | |
c70d7499 | 512 | && (intf->seq_table[i].recv_msg)) |
393d2cc3 | 513 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
393d2cc3 CM |
514 | } |
515 | } | |
516 | ||
517 | static void intf_free(struct kref *ref) | |
518 | { | |
519 | ipmi_smi_t intf = container_of(ref, struct ipmi_smi, refcount); | |
520 | ||
521 | clean_up_interface_data(intf); | |
522 | kfree(intf); | |
523 | } | |
524 | ||
bca0324d | 525 | struct watcher_entry { |
b2c03941 CM |
526 | int intf_num; |
527 | ipmi_smi_t intf; | |
bca0324d | 528 | struct list_head link; |
bca0324d CM |
529 | }; |
530 | ||
1da177e4 LT |
531 | int ipmi_smi_watcher_register(struct ipmi_smi_watcher *watcher) |
532 | { | |
bca0324d | 533 | ipmi_smi_t intf; |
e381d1c4 | 534 | LIST_HEAD(to_deliver); |
bca0324d CM |
535 | struct watcher_entry *e, *e2; |
536 | ||
b2c03941 CM |
537 | mutex_lock(&smi_watchers_mutex); |
538 | ||
bca0324d CM |
539 | mutex_lock(&ipmi_interfaces_mutex); |
540 | ||
b2c03941 | 541 | /* Build a list of things to deliver. */ |
78ba2faf | 542 | list_for_each_entry(intf, &ipmi_interfaces, link) { |
bca0324d CM |
543 | if (intf->intf_num == -1) |
544 | continue; | |
545 | e = kmalloc(sizeof(*e), GFP_KERNEL); | |
546 | if (!e) | |
547 | goto out_err; | |
b2c03941 CM |
548 | kref_get(&intf->refcount); |
549 | e->intf = intf; | |
bca0324d CM |
550 | e->intf_num = intf->intf_num; |
551 | list_add_tail(&e->link, &to_deliver); | |
552 | } | |
1da177e4 | 553 | |
b2c03941 CM |
554 | /* We will succeed, so add it to the list. */ |
555 | list_add(&watcher->link, &smi_watchers); | |
bca0324d CM |
556 | |
557 | mutex_unlock(&ipmi_interfaces_mutex); | |
558 | ||
559 | list_for_each_entry_safe(e, e2, &to_deliver, link) { | |
560 | list_del(&e->link); | |
b2c03941 CM |
561 | watcher->new_smi(e->intf_num, e->intf->si_dev); |
562 | kref_put(&e->intf->refcount, intf_free); | |
bca0324d | 563 | kfree(e); |
1da177e4 | 564 | } |
bca0324d | 565 | |
b2c03941 | 566 | mutex_unlock(&smi_watchers_mutex); |
bca0324d | 567 | |
1da177e4 | 568 | return 0; |
bca0324d CM |
569 | |
570 | out_err: | |
b2c03941 CM |
571 | mutex_unlock(&ipmi_interfaces_mutex); |
572 | mutex_unlock(&smi_watchers_mutex); | |
bca0324d CM |
573 | list_for_each_entry_safe(e, e2, &to_deliver, link) { |
574 | list_del(&e->link); | |
b2c03941 | 575 | kref_put(&e->intf->refcount, intf_free); |
bca0324d CM |
576 | kfree(e); |
577 | } | |
578 | return -ENOMEM; | |
1da177e4 | 579 | } |
c70d7499 | 580 | EXPORT_SYMBOL(ipmi_smi_watcher_register); |
1da177e4 LT |
581 | |
582 | int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher) | |
583 | { | |
b2c03941 | 584 | mutex_lock(&smi_watchers_mutex); |
1da177e4 | 585 | list_del(&(watcher->link)); |
b2c03941 | 586 | mutex_unlock(&smi_watchers_mutex); |
1da177e4 LT |
587 | return 0; |
588 | } | |
c70d7499 | 589 | EXPORT_SYMBOL(ipmi_smi_watcher_unregister); |
1da177e4 | 590 | |
b2c03941 CM |
591 | /* |
592 | * Must be called with smi_watchers_mutex held. | |
593 | */ | |
1da177e4 | 594 | static void |
50c812b2 | 595 | call_smi_watchers(int i, struct device *dev) |
1da177e4 LT |
596 | { |
597 | struct ipmi_smi_watcher *w; | |
598 | ||
1da177e4 LT |
599 | list_for_each_entry(w, &smi_watchers, link) { |
600 | if (try_module_get(w->owner)) { | |
50c812b2 | 601 | w->new_smi(i, dev); |
1da177e4 LT |
602 | module_put(w->owner); |
603 | } | |
604 | } | |
1da177e4 LT |
605 | } |
606 | ||
607 | static int | |
608 | ipmi_addr_equal(struct ipmi_addr *addr1, struct ipmi_addr *addr2) | |
609 | { | |
610 | if (addr1->addr_type != addr2->addr_type) | |
611 | return 0; | |
612 | ||
613 | if (addr1->channel != addr2->channel) | |
614 | return 0; | |
615 | ||
616 | if (addr1->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
617 | struct ipmi_system_interface_addr *smi_addr1 | |
618 | = (struct ipmi_system_interface_addr *) addr1; | |
619 | struct ipmi_system_interface_addr *smi_addr2 | |
620 | = (struct ipmi_system_interface_addr *) addr2; | |
621 | return (smi_addr1->lun == smi_addr2->lun); | |
622 | } | |
623 | ||
25176ed6 | 624 | if (is_ipmb_addr(addr1) || is_ipmb_bcast_addr(addr1)) { |
1da177e4 LT |
625 | struct ipmi_ipmb_addr *ipmb_addr1 |
626 | = (struct ipmi_ipmb_addr *) addr1; | |
627 | struct ipmi_ipmb_addr *ipmb_addr2 | |
628 | = (struct ipmi_ipmb_addr *) addr2; | |
629 | ||
630 | return ((ipmb_addr1->slave_addr == ipmb_addr2->slave_addr) | |
631 | && (ipmb_addr1->lun == ipmb_addr2->lun)); | |
632 | } | |
633 | ||
25176ed6 | 634 | if (is_lan_addr(addr1)) { |
1da177e4 LT |
635 | struct ipmi_lan_addr *lan_addr1 |
636 | = (struct ipmi_lan_addr *) addr1; | |
637 | struct ipmi_lan_addr *lan_addr2 | |
638 | = (struct ipmi_lan_addr *) addr2; | |
639 | ||
640 | return ((lan_addr1->remote_SWID == lan_addr2->remote_SWID) | |
641 | && (lan_addr1->local_SWID == lan_addr2->local_SWID) | |
642 | && (lan_addr1->session_handle | |
643 | == lan_addr2->session_handle) | |
644 | && (lan_addr1->lun == lan_addr2->lun)); | |
645 | } | |
646 | ||
647 | return 1; | |
648 | } | |
649 | ||
650 | int ipmi_validate_addr(struct ipmi_addr *addr, int len) | |
651 | { | |
c70d7499 | 652 | if (len < sizeof(struct ipmi_system_interface_addr)) |
1da177e4 | 653 | return -EINVAL; |
1da177e4 LT |
654 | |
655 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
656 | if (addr->channel != IPMI_BMC_CHANNEL) | |
657 | return -EINVAL; | |
658 | return 0; | |
659 | } | |
660 | ||
661 | if ((addr->channel == IPMI_BMC_CHANNEL) | |
12fc1d7b | 662 | || (addr->channel >= IPMI_MAX_CHANNELS) |
1da177e4 LT |
663 | || (addr->channel < 0)) |
664 | return -EINVAL; | |
665 | ||
25176ed6 | 666 | if (is_ipmb_addr(addr) || is_ipmb_bcast_addr(addr)) { |
c70d7499 | 667 | if (len < sizeof(struct ipmi_ipmb_addr)) |
1da177e4 | 668 | return -EINVAL; |
1da177e4 LT |
669 | return 0; |
670 | } | |
671 | ||
25176ed6 | 672 | if (is_lan_addr(addr)) { |
c70d7499 | 673 | if (len < sizeof(struct ipmi_lan_addr)) |
1da177e4 | 674 | return -EINVAL; |
1da177e4 LT |
675 | return 0; |
676 | } | |
677 | ||
678 | return -EINVAL; | |
679 | } | |
c70d7499 | 680 | EXPORT_SYMBOL(ipmi_validate_addr); |
1da177e4 LT |
681 | |
682 | unsigned int ipmi_addr_length(int addr_type) | |
683 | { | |
684 | if (addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
685 | return sizeof(struct ipmi_system_interface_addr); | |
686 | ||
687 | if ((addr_type == IPMI_IPMB_ADDR_TYPE) | |
c70d7499 | 688 | || (addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
1da177e4 | 689 | return sizeof(struct ipmi_ipmb_addr); |
1da177e4 LT |
690 | |
691 | if (addr_type == IPMI_LAN_ADDR_TYPE) | |
692 | return sizeof(struct ipmi_lan_addr); | |
693 | ||
694 | return 0; | |
695 | } | |
c70d7499 | 696 | EXPORT_SYMBOL(ipmi_addr_length); |
1da177e4 LT |
697 | |
698 | static void deliver_response(struct ipmi_recv_msg *msg) | |
699 | { | |
8a3628d5 | 700 | if (!msg->user) { |
56a55ec6 | 701 | ipmi_smi_t intf = msg->user_msg_data; |
56a55ec6 CM |
702 | |
703 | /* Special handling for NULL users. */ | |
704 | if (intf->null_user_handler) { | |
705 | intf->null_user_handler(intf, msg); | |
b2655f26 | 706 | ipmi_inc_stat(intf, handled_local_responses); |
56a55ec6 CM |
707 | } else { |
708 | /* No handler, so give up. */ | |
b2655f26 | 709 | ipmi_inc_stat(intf, unhandled_local_responses); |
56a55ec6 CM |
710 | } |
711 | ipmi_free_recv_msg(msg); | |
712 | } else { | |
393d2cc3 CM |
713 | ipmi_user_t user = msg->user; |
714 | user->handler->ipmi_recv_hndl(msg, user->handler_data); | |
56a55ec6 | 715 | } |
1da177e4 LT |
716 | } |
717 | ||
b2c03941 CM |
718 | static void |
719 | deliver_err_response(struct ipmi_recv_msg *msg, int err) | |
720 | { | |
721 | msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
722 | msg->msg_data[0] = err; | |
723 | msg->msg.netfn |= 1; /* Convert to a response. */ | |
724 | msg->msg.data_len = 1; | |
725 | msg->msg.data = msg->msg_data; | |
726 | deliver_response(msg); | |
727 | } | |
728 | ||
c70d7499 CM |
729 | /* |
730 | * Find the next sequence number not being used and add the given | |
731 | * message with the given timeout to the sequence table. This must be | |
732 | * called with the interface's seq_lock held. | |
733 | */ | |
1da177e4 LT |
734 | static int intf_next_seq(ipmi_smi_t intf, |
735 | struct ipmi_recv_msg *recv_msg, | |
736 | unsigned long timeout, | |
737 | int retries, | |
738 | int broadcast, | |
739 | unsigned char *seq, | |
740 | long *seqid) | |
741 | { | |
742 | int rv = 0; | |
743 | unsigned int i; | |
744 | ||
c70d7499 CM |
745 | for (i = intf->curr_seq; (i+1)%IPMI_IPMB_NUM_SEQ != intf->curr_seq; |
746 | i = (i+1)%IPMI_IPMB_NUM_SEQ) { | |
8a3628d5 | 747 | if (!intf->seq_table[i].inuse) |
1da177e4 LT |
748 | break; |
749 | } | |
750 | ||
8a3628d5 | 751 | if (!intf->seq_table[i].inuse) { |
1da177e4 LT |
752 | intf->seq_table[i].recv_msg = recv_msg; |
753 | ||
c70d7499 CM |
754 | /* |
755 | * Start with the maximum timeout, when the send response | |
756 | * comes in we will start the real timer. | |
757 | */ | |
1da177e4 LT |
758 | intf->seq_table[i].timeout = MAX_MSG_TIMEOUT; |
759 | intf->seq_table[i].orig_timeout = timeout; | |
760 | intf->seq_table[i].retries_left = retries; | |
761 | intf->seq_table[i].broadcast = broadcast; | |
762 | intf->seq_table[i].inuse = 1; | |
763 | intf->seq_table[i].seqid = NEXT_SEQID(intf->seq_table[i].seqid); | |
764 | *seq = i; | |
765 | *seqid = intf->seq_table[i].seqid; | |
766 | intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ; | |
767 | } else { | |
768 | rv = -EAGAIN; | |
769 | } | |
c70d7499 | 770 | |
1da177e4 LT |
771 | return rv; |
772 | } | |
773 | ||
c70d7499 CM |
774 | /* |
775 | * Return the receive message for the given sequence number and | |
776 | * release the sequence number so it can be reused. Some other data | |
777 | * is passed in to be sure the message matches up correctly (to help | |
778 | * guard against message coming in after their timeout and the | |
779 | * sequence number being reused). | |
780 | */ | |
1da177e4 LT |
781 | static int intf_find_seq(ipmi_smi_t intf, |
782 | unsigned char seq, | |
783 | short channel, | |
784 | unsigned char cmd, | |
785 | unsigned char netfn, | |
786 | struct ipmi_addr *addr, | |
787 | struct ipmi_recv_msg **recv_msg) | |
788 | { | |
789 | int rv = -ENODEV; | |
790 | unsigned long flags; | |
791 | ||
792 | if (seq >= IPMI_IPMB_NUM_SEQ) | |
793 | return -EINVAL; | |
794 | ||
795 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
796 | if (intf->seq_table[seq].inuse) { | |
797 | struct ipmi_recv_msg *msg = intf->seq_table[seq].recv_msg; | |
798 | ||
c70d7499 CM |
799 | if ((msg->addr.channel == channel) && (msg->msg.cmd == cmd) |
800 | && (msg->msg.netfn == netfn) | |
801 | && (ipmi_addr_equal(addr, &(msg->addr)))) { | |
1da177e4 LT |
802 | *recv_msg = msg; |
803 | intf->seq_table[seq].inuse = 0; | |
804 | rv = 0; | |
805 | } | |
806 | } | |
807 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
808 | ||
809 | return rv; | |
810 | } | |
811 | ||
812 | ||
813 | /* Start the timer for a specific sequence table entry. */ | |
814 | static int intf_start_seq_timer(ipmi_smi_t intf, | |
815 | long msgid) | |
816 | { | |
817 | int rv = -ENODEV; | |
818 | unsigned long flags; | |
819 | unsigned char seq; | |
820 | unsigned long seqid; | |
821 | ||
822 | ||
823 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); | |
824 | ||
825 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
c70d7499 CM |
826 | /* |
827 | * We do this verification because the user can be deleted | |
828 | * while a message is outstanding. | |
829 | */ | |
1da177e4 | 830 | if ((intf->seq_table[seq].inuse) |
c70d7499 | 831 | && (intf->seq_table[seq].seqid == seqid)) { |
1da177e4 LT |
832 | struct seq_table *ent = &(intf->seq_table[seq]); |
833 | ent->timeout = ent->orig_timeout; | |
834 | rv = 0; | |
835 | } | |
836 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
837 | ||
838 | return rv; | |
839 | } | |
840 | ||
841 | /* Got an error for the send message for a specific sequence number. */ | |
842 | static int intf_err_seq(ipmi_smi_t intf, | |
843 | long msgid, | |
844 | unsigned int err) | |
845 | { | |
846 | int rv = -ENODEV; | |
847 | unsigned long flags; | |
848 | unsigned char seq; | |
849 | unsigned long seqid; | |
850 | struct ipmi_recv_msg *msg = NULL; | |
851 | ||
852 | ||
853 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); | |
854 | ||
855 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
c70d7499 CM |
856 | /* |
857 | * We do this verification because the user can be deleted | |
858 | * while a message is outstanding. | |
859 | */ | |
1da177e4 | 860 | if ((intf->seq_table[seq].inuse) |
c70d7499 | 861 | && (intf->seq_table[seq].seqid == seqid)) { |
1da177e4 LT |
862 | struct seq_table *ent = &(intf->seq_table[seq]); |
863 | ||
864 | ent->inuse = 0; | |
865 | msg = ent->recv_msg; | |
866 | rv = 0; | |
867 | } | |
868 | spin_unlock_irqrestore(&(intf->seq_lock), flags); | |
869 | ||
b2c03941 CM |
870 | if (msg) |
871 | deliver_err_response(msg, err); | |
1da177e4 LT |
872 | |
873 | return rv; | |
874 | } | |
875 | ||
876 | ||
877 | int ipmi_create_user(unsigned int if_num, | |
878 | struct ipmi_user_hndl *handler, | |
879 | void *handler_data, | |
880 | ipmi_user_t *user) | |
881 | { | |
882 | unsigned long flags; | |
883 | ipmi_user_t new_user; | |
884 | int rv = 0; | |
885 | ipmi_smi_t intf; | |
886 | ||
c70d7499 CM |
887 | /* |
888 | * There is no module usecount here, because it's not | |
889 | * required. Since this can only be used by and called from | |
890 | * other modules, they will implicitly use this module, and | |
891 | * thus this can't be removed unless the other modules are | |
892 | * removed. | |
893 | */ | |
1da177e4 LT |
894 | |
895 | if (handler == NULL) | |
896 | return -EINVAL; | |
897 | ||
c70d7499 CM |
898 | /* |
899 | * Make sure the driver is actually initialized, this handles | |
900 | * problems with initialization order. | |
901 | */ | |
1da177e4 LT |
902 | if (!initialized) { |
903 | rv = ipmi_init_msghandler(); | |
904 | if (rv) | |
905 | return rv; | |
906 | ||
c70d7499 CM |
907 | /* |
908 | * The init code doesn't return an error if it was turned | |
909 | * off, but it won't initialize. Check that. | |
910 | */ | |
1da177e4 LT |
911 | if (!initialized) |
912 | return -ENODEV; | |
913 | } | |
914 | ||
915 | new_user = kmalloc(sizeof(*new_user), GFP_KERNEL); | |
8a3628d5 | 916 | if (!new_user) |
1da177e4 LT |
917 | return -ENOMEM; |
918 | ||
b2c03941 | 919 | mutex_lock(&ipmi_interfaces_mutex); |
bca0324d CM |
920 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
921 | if (intf->intf_num == if_num) | |
922 | goto found; | |
1da177e4 | 923 | } |
b2c03941 | 924 | /* Not found, return an error */ |
bca0324d CM |
925 | rv = -EINVAL; |
926 | goto out_kfree; | |
1da177e4 | 927 | |
bca0324d | 928 | found: |
393d2cc3 CM |
929 | /* Note that each existing user holds a refcount to the interface. */ |
930 | kref_get(&intf->refcount); | |
1da177e4 | 931 | |
393d2cc3 | 932 | kref_init(&new_user->refcount); |
1da177e4 LT |
933 | new_user->handler = handler; |
934 | new_user->handler_data = handler_data; | |
935 | new_user->intf = intf; | |
936 | new_user->gets_events = 0; | |
937 | ||
938 | if (!try_module_get(intf->handlers->owner)) { | |
939 | rv = -ENODEV; | |
5c98d29a | 940 | goto out_kref; |
1da177e4 LT |
941 | } |
942 | ||
943 | if (intf->handlers->inc_usecount) { | |
944 | rv = intf->handlers->inc_usecount(intf->send_info); | |
945 | if (rv) { | |
946 | module_put(intf->handlers->owner); | |
5c98d29a | 947 | goto out_kref; |
1da177e4 LT |
948 | } |
949 | } | |
950 | ||
c70d7499 CM |
951 | /* |
952 | * Hold the lock so intf->handlers is guaranteed to be good | |
953 | * until now | |
954 | */ | |
b2c03941 CM |
955 | mutex_unlock(&ipmi_interfaces_mutex); |
956 | ||
393d2cc3 CM |
957 | new_user->valid = 1; |
958 | spin_lock_irqsave(&intf->seq_lock, flags); | |
959 | list_add_rcu(&new_user->link, &intf->users); | |
960 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
961 | *user = new_user; | |
962 | return 0; | |
1da177e4 | 963 | |
5c98d29a | 964 | out_kref: |
393d2cc3 | 965 | kref_put(&intf->refcount, intf_free); |
5c98d29a | 966 | out_kfree: |
b2c03941 | 967 | mutex_unlock(&ipmi_interfaces_mutex); |
5c98d29a | 968 | kfree(new_user); |
1da177e4 LT |
969 | return rv; |
970 | } | |
c70d7499 | 971 | EXPORT_SYMBOL(ipmi_create_user); |
1da177e4 | 972 | |
16f4232c ZY |
973 | int ipmi_get_smi_info(int if_num, struct ipmi_smi_info *data) |
974 | { | |
975 | int rv = 0; | |
976 | ipmi_smi_t intf; | |
977 | struct ipmi_smi_handlers *handlers; | |
978 | ||
979 | mutex_lock(&ipmi_interfaces_mutex); | |
980 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
981 | if (intf->intf_num == if_num) | |
982 | goto found; | |
983 | } | |
984 | /* Not found, return an error */ | |
985 | rv = -EINVAL; | |
986 | mutex_unlock(&ipmi_interfaces_mutex); | |
987 | return rv; | |
988 | ||
989 | found: | |
990 | handlers = intf->handlers; | |
991 | rv = -ENOSYS; | |
992 | if (handlers->get_smi_info) | |
993 | rv = handlers->get_smi_info(intf->send_info, data); | |
994 | mutex_unlock(&ipmi_interfaces_mutex); | |
995 | ||
996 | return rv; | |
997 | } | |
998 | EXPORT_SYMBOL(ipmi_get_smi_info); | |
999 | ||
393d2cc3 CM |
1000 | static void free_user(struct kref *ref) |
1001 | { | |
1002 | ipmi_user_t user = container_of(ref, struct ipmi_user, refcount); | |
1003 | kfree(user); | |
1004 | } | |
1005 | ||
1006 | int ipmi_destroy_user(ipmi_user_t user) | |
1da177e4 | 1007 | { |
393d2cc3 | 1008 | ipmi_smi_t intf = user->intf; |
1da177e4 LT |
1009 | int i; |
1010 | unsigned long flags; | |
393d2cc3 | 1011 | struct cmd_rcvr *rcvr; |
393d2cc3 | 1012 | struct cmd_rcvr *rcvrs = NULL; |
1da177e4 | 1013 | |
8a3628d5 | 1014 | user->valid = 0; |
1da177e4 | 1015 | |
393d2cc3 CM |
1016 | /* Remove the user from the interface's sequence table. */ |
1017 | spin_lock_irqsave(&intf->seq_lock, flags); | |
1018 | list_del_rcu(&user->link); | |
1da177e4 | 1019 | |
e8b33617 | 1020 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
393d2cc3 | 1021 | if (intf->seq_table[i].inuse |
c70d7499 | 1022 | && (intf->seq_table[i].recv_msg->user == user)) { |
393d2cc3 | 1023 | intf->seq_table[i].inuse = 0; |
b2c03941 | 1024 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
1da177e4 LT |
1025 | } |
1026 | } | |
393d2cc3 CM |
1027 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
1028 | ||
1029 | /* | |
1030 | * Remove the user from the command receiver's table. First | |
1031 | * we build a list of everything (not using the standard link, | |
1032 | * since other things may be using it till we do | |
1033 | * synchronize_rcu()) then free everything in that list. | |
1034 | */ | |
d6dfd131 | 1035 | mutex_lock(&intf->cmd_rcvrs_mutex); |
066bb8d0 | 1036 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
1da177e4 | 1037 | if (rcvr->user == user) { |
393d2cc3 CM |
1038 | list_del_rcu(&rcvr->link); |
1039 | rcvr->next = rcvrs; | |
1040 | rcvrs = rcvr; | |
1da177e4 LT |
1041 | } |
1042 | } | |
d6dfd131 | 1043 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
393d2cc3 CM |
1044 | synchronize_rcu(); |
1045 | while (rcvrs) { | |
1046 | rcvr = rcvrs; | |
1047 | rcvrs = rcvr->next; | |
1048 | kfree(rcvr); | |
1049 | } | |
1da177e4 | 1050 | |
b2c03941 CM |
1051 | mutex_lock(&ipmi_interfaces_mutex); |
1052 | if (intf->handlers) { | |
1053 | module_put(intf->handlers->owner); | |
1054 | if (intf->handlers->dec_usecount) | |
1055 | intf->handlers->dec_usecount(intf->send_info); | |
1056 | } | |
1057 | mutex_unlock(&ipmi_interfaces_mutex); | |
1da177e4 | 1058 | |
393d2cc3 | 1059 | kref_put(&intf->refcount, intf_free); |
1da177e4 | 1060 | |
393d2cc3 | 1061 | kref_put(&user->refcount, free_user); |
1da177e4 | 1062 | |
8a3628d5 | 1063 | return 0; |
1da177e4 | 1064 | } |
c70d7499 | 1065 | EXPORT_SYMBOL(ipmi_destroy_user); |
1da177e4 LT |
1066 | |
1067 | void ipmi_get_version(ipmi_user_t user, | |
1068 | unsigned char *major, | |
1069 | unsigned char *minor) | |
1070 | { | |
b2c03941 CM |
1071 | *major = user->intf->ipmi_version_major; |
1072 | *minor = user->intf->ipmi_version_minor; | |
1da177e4 | 1073 | } |
c70d7499 | 1074 | EXPORT_SYMBOL(ipmi_get_version); |
1da177e4 | 1075 | |
c14979b9 CM |
1076 | int ipmi_set_my_address(ipmi_user_t user, |
1077 | unsigned int channel, | |
1078 | unsigned char address) | |
1da177e4 | 1079 | { |
c14979b9 CM |
1080 | if (channel >= IPMI_MAX_CHANNELS) |
1081 | return -EINVAL; | |
1082 | user->intf->channels[channel].address = address; | |
1083 | return 0; | |
1da177e4 | 1084 | } |
c70d7499 | 1085 | EXPORT_SYMBOL(ipmi_set_my_address); |
1da177e4 | 1086 | |
c14979b9 CM |
1087 | int ipmi_get_my_address(ipmi_user_t user, |
1088 | unsigned int channel, | |
1089 | unsigned char *address) | |
1da177e4 | 1090 | { |
c14979b9 CM |
1091 | if (channel >= IPMI_MAX_CHANNELS) |
1092 | return -EINVAL; | |
1093 | *address = user->intf->channels[channel].address; | |
1094 | return 0; | |
1da177e4 | 1095 | } |
c70d7499 | 1096 | EXPORT_SYMBOL(ipmi_get_my_address); |
1da177e4 | 1097 | |
c14979b9 CM |
1098 | int ipmi_set_my_LUN(ipmi_user_t user, |
1099 | unsigned int channel, | |
1100 | unsigned char LUN) | |
1da177e4 | 1101 | { |
c14979b9 CM |
1102 | if (channel >= IPMI_MAX_CHANNELS) |
1103 | return -EINVAL; | |
1104 | user->intf->channels[channel].lun = LUN & 0x3; | |
1105 | return 0; | |
1da177e4 | 1106 | } |
c70d7499 | 1107 | EXPORT_SYMBOL(ipmi_set_my_LUN); |
1da177e4 | 1108 | |
c14979b9 CM |
1109 | int ipmi_get_my_LUN(ipmi_user_t user, |
1110 | unsigned int channel, | |
1111 | unsigned char *address) | |
1da177e4 | 1112 | { |
c14979b9 CM |
1113 | if (channel >= IPMI_MAX_CHANNELS) |
1114 | return -EINVAL; | |
1115 | *address = user->intf->channels[channel].lun; | |
1116 | return 0; | |
1da177e4 | 1117 | } |
c70d7499 | 1118 | EXPORT_SYMBOL(ipmi_get_my_LUN); |
1da177e4 | 1119 | |
b9675136 CM |
1120 | int ipmi_get_maintenance_mode(ipmi_user_t user) |
1121 | { | |
1122 | int mode; | |
1123 | unsigned long flags; | |
1124 | ||
1125 | spin_lock_irqsave(&user->intf->maintenance_mode_lock, flags); | |
1126 | mode = user->intf->maintenance_mode; | |
1127 | spin_unlock_irqrestore(&user->intf->maintenance_mode_lock, flags); | |
1128 | ||
1129 | return mode; | |
1130 | } | |
1131 | EXPORT_SYMBOL(ipmi_get_maintenance_mode); | |
1132 | ||
1133 | static void maintenance_mode_update(ipmi_smi_t intf) | |
1134 | { | |
1135 | if (intf->handlers->set_maintenance_mode) | |
1136 | intf->handlers->set_maintenance_mode( | |
1137 | intf->send_info, intf->maintenance_mode_enable); | |
1138 | } | |
1139 | ||
1140 | int ipmi_set_maintenance_mode(ipmi_user_t user, int mode) | |
1141 | { | |
1142 | int rv = 0; | |
1143 | unsigned long flags; | |
1144 | ipmi_smi_t intf = user->intf; | |
1145 | ||
1146 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); | |
1147 | if (intf->maintenance_mode != mode) { | |
1148 | switch (mode) { | |
1149 | case IPMI_MAINTENANCE_MODE_AUTO: | |
1150 | intf->maintenance_mode = mode; | |
1151 | intf->maintenance_mode_enable | |
1152 | = (intf->auto_maintenance_timeout > 0); | |
1153 | break; | |
1154 | ||
1155 | case IPMI_MAINTENANCE_MODE_OFF: | |
1156 | intf->maintenance_mode = mode; | |
1157 | intf->maintenance_mode_enable = 0; | |
1158 | break; | |
1159 | ||
1160 | case IPMI_MAINTENANCE_MODE_ON: | |
1161 | intf->maintenance_mode = mode; | |
1162 | intf->maintenance_mode_enable = 1; | |
1163 | break; | |
1164 | ||
1165 | default: | |
1166 | rv = -EINVAL; | |
1167 | goto out_unlock; | |
1168 | } | |
1169 | ||
1170 | maintenance_mode_update(intf); | |
1171 | } | |
1172 | out_unlock: | |
1173 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, flags); | |
1174 | ||
1175 | return rv; | |
1176 | } | |
1177 | EXPORT_SYMBOL(ipmi_set_maintenance_mode); | |
1178 | ||
1da177e4 LT |
1179 | int ipmi_set_gets_events(ipmi_user_t user, int val) |
1180 | { | |
393d2cc3 CM |
1181 | unsigned long flags; |
1182 | ipmi_smi_t intf = user->intf; | |
1183 | struct ipmi_recv_msg *msg, *msg2; | |
1184 | struct list_head msgs; | |
1da177e4 | 1185 | |
393d2cc3 CM |
1186 | INIT_LIST_HEAD(&msgs); |
1187 | ||
1188 | spin_lock_irqsave(&intf->events_lock, flags); | |
1da177e4 LT |
1189 | user->gets_events = val; |
1190 | ||
b2c03941 CM |
1191 | if (intf->delivering_events) |
1192 | /* | |
1193 | * Another thread is delivering events for this, so | |
1194 | * let it handle any new events. | |
1195 | */ | |
1196 | goto out; | |
1197 | ||
1198 | /* Deliver any queued events. */ | |
1199 | while (user->gets_events && !list_empty(&intf->waiting_events)) { | |
179e0917 AM |
1200 | list_for_each_entry_safe(msg, msg2, &intf->waiting_events, link) |
1201 | list_move_tail(&msg->link, &msgs); | |
4791c03d | 1202 | intf->waiting_events_count = 0; |
87ebd06f CM |
1203 | if (intf->event_msg_printed) { |
1204 | printk(KERN_WARNING PFX "Event queue no longer" | |
1205 | " full\n"); | |
1206 | intf->event_msg_printed = 0; | |
1207 | } | |
393d2cc3 | 1208 | |
b2c03941 CM |
1209 | intf->delivering_events = 1; |
1210 | spin_unlock_irqrestore(&intf->events_lock, flags); | |
1211 | ||
1212 | list_for_each_entry_safe(msg, msg2, &msgs, link) { | |
1213 | msg->user = user; | |
1214 | kref_get(&user->refcount); | |
1215 | deliver_response(msg); | |
1216 | } | |
1217 | ||
1218 | spin_lock_irqsave(&intf->events_lock, flags); | |
1219 | intf->delivering_events = 0; | |
393d2cc3 CM |
1220 | } |
1221 | ||
b2c03941 | 1222 | out: |
393d2cc3 | 1223 | spin_unlock_irqrestore(&intf->events_lock, flags); |
1da177e4 LT |
1224 | |
1225 | return 0; | |
1226 | } | |
c70d7499 | 1227 | EXPORT_SYMBOL(ipmi_set_gets_events); |
1da177e4 | 1228 | |
393d2cc3 CM |
1229 | static struct cmd_rcvr *find_cmd_rcvr(ipmi_smi_t intf, |
1230 | unsigned char netfn, | |
c69c3127 CM |
1231 | unsigned char cmd, |
1232 | unsigned char chan) | |
393d2cc3 CM |
1233 | { |
1234 | struct cmd_rcvr *rcvr; | |
1235 | ||
1236 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { | |
c69c3127 CM |
1237 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) |
1238 | && (rcvr->chans & (1 << chan))) | |
393d2cc3 CM |
1239 | return rcvr; |
1240 | } | |
1241 | return NULL; | |
1242 | } | |
1243 | ||
c69c3127 CM |
1244 | static int is_cmd_rcvr_exclusive(ipmi_smi_t intf, |
1245 | unsigned char netfn, | |
1246 | unsigned char cmd, | |
1247 | unsigned int chans) | |
1248 | { | |
1249 | struct cmd_rcvr *rcvr; | |
1250 | ||
1251 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { | |
1252 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) | |
1253 | && (rcvr->chans & chans)) | |
1254 | return 0; | |
1255 | } | |
1256 | return 1; | |
1257 | } | |
1258 | ||
1da177e4 LT |
1259 | int ipmi_register_for_cmd(ipmi_user_t user, |
1260 | unsigned char netfn, | |
c69c3127 CM |
1261 | unsigned char cmd, |
1262 | unsigned int chans) | |
1da177e4 | 1263 | { |
393d2cc3 CM |
1264 | ipmi_smi_t intf = user->intf; |
1265 | struct cmd_rcvr *rcvr; | |
393d2cc3 | 1266 | int rv = 0; |
1da177e4 LT |
1267 | |
1268 | ||
1269 | rcvr = kmalloc(sizeof(*rcvr), GFP_KERNEL); | |
8a3628d5 | 1270 | if (!rcvr) |
1da177e4 | 1271 | return -ENOMEM; |
393d2cc3 CM |
1272 | rcvr->cmd = cmd; |
1273 | rcvr->netfn = netfn; | |
c69c3127 | 1274 | rcvr->chans = chans; |
393d2cc3 | 1275 | rcvr->user = user; |
1da177e4 | 1276 | |
d6dfd131 | 1277 | mutex_lock(&intf->cmd_rcvrs_mutex); |
1da177e4 | 1278 | /* Make sure the command/netfn is not already registered. */ |
c69c3127 | 1279 | if (!is_cmd_rcvr_exclusive(intf, netfn, cmd, chans)) { |
393d2cc3 CM |
1280 | rv = -EBUSY; |
1281 | goto out_unlock; | |
1da177e4 | 1282 | } |
877197ef | 1283 | |
393d2cc3 | 1284 | list_add_rcu(&rcvr->link, &intf->cmd_rcvrs); |
1da177e4 | 1285 | |
393d2cc3 | 1286 | out_unlock: |
d6dfd131 | 1287 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
1da177e4 LT |
1288 | if (rv) |
1289 | kfree(rcvr); | |
1290 | ||
1291 | return rv; | |
1292 | } | |
c70d7499 | 1293 | EXPORT_SYMBOL(ipmi_register_for_cmd); |
1da177e4 LT |
1294 | |
1295 | int ipmi_unregister_for_cmd(ipmi_user_t user, | |
1296 | unsigned char netfn, | |
c69c3127 CM |
1297 | unsigned char cmd, |
1298 | unsigned int chans) | |
1da177e4 | 1299 | { |
393d2cc3 CM |
1300 | ipmi_smi_t intf = user->intf; |
1301 | struct cmd_rcvr *rcvr; | |
c69c3127 CM |
1302 | struct cmd_rcvr *rcvrs = NULL; |
1303 | int i, rv = -ENOENT; | |
1da177e4 | 1304 | |
d6dfd131 | 1305 | mutex_lock(&intf->cmd_rcvrs_mutex); |
c69c3127 CM |
1306 | for (i = 0; i < IPMI_NUM_CHANNELS; i++) { |
1307 | if (((1 << i) & chans) == 0) | |
1308 | continue; | |
1309 | rcvr = find_cmd_rcvr(intf, netfn, cmd, i); | |
1310 | if (rcvr == NULL) | |
1311 | continue; | |
1312 | if (rcvr->user == user) { | |
1313 | rv = 0; | |
1314 | rcvr->chans &= ~chans; | |
1315 | if (rcvr->chans == 0) { | |
1316 | list_del_rcu(&rcvr->link); | |
1317 | rcvr->next = rcvrs; | |
1318 | rcvrs = rcvr; | |
1319 | } | |
1320 | } | |
1321 | } | |
1322 | mutex_unlock(&intf->cmd_rcvrs_mutex); | |
1323 | synchronize_rcu(); | |
1324 | while (rcvrs) { | |
1325 | rcvr = rcvrs; | |
1326 | rcvrs = rcvr->next; | |
393d2cc3 | 1327 | kfree(rcvr); |
1da177e4 | 1328 | } |
c69c3127 | 1329 | return rv; |
1da177e4 | 1330 | } |
c70d7499 | 1331 | EXPORT_SYMBOL(ipmi_unregister_for_cmd); |
1da177e4 | 1332 | |
1da177e4 LT |
1333 | static unsigned char |
1334 | ipmb_checksum(unsigned char *data, int size) | |
1335 | { | |
1336 | unsigned char csum = 0; | |
c70d7499 | 1337 | |
1da177e4 LT |
1338 | for (; size > 0; size--, data++) |
1339 | csum += *data; | |
1340 | ||
1341 | return -csum; | |
1342 | } | |
1343 | ||
1344 | static inline void format_ipmb_msg(struct ipmi_smi_msg *smi_msg, | |
1345 | struct kernel_ipmi_msg *msg, | |
1346 | struct ipmi_ipmb_addr *ipmb_addr, | |
1347 | long msgid, | |
1348 | unsigned char ipmb_seq, | |
1349 | int broadcast, | |
1350 | unsigned char source_address, | |
1351 | unsigned char source_lun) | |
1352 | { | |
1353 | int i = broadcast; | |
1354 | ||
1355 | /* Format the IPMB header data. */ | |
1356 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1357 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1358 | smi_msg->data[2] = ipmb_addr->channel; | |
1359 | if (broadcast) | |
1360 | smi_msg->data[3] = 0; | |
1361 | smi_msg->data[i+3] = ipmb_addr->slave_addr; | |
1362 | smi_msg->data[i+4] = (msg->netfn << 2) | (ipmb_addr->lun & 0x3); | |
1363 | smi_msg->data[i+5] = ipmb_checksum(&(smi_msg->data[i+3]), 2); | |
1364 | smi_msg->data[i+6] = source_address; | |
1365 | smi_msg->data[i+7] = (ipmb_seq << 2) | source_lun; | |
1366 | smi_msg->data[i+8] = msg->cmd; | |
1367 | ||
1368 | /* Now tack on the data to the message. */ | |
1369 | if (msg->data_len > 0) | |
1370 | memcpy(&(smi_msg->data[i+9]), msg->data, | |
1371 | msg->data_len); | |
1372 | smi_msg->data_size = msg->data_len + 9; | |
1373 | ||
1374 | /* Now calculate the checksum and tack it on. */ | |
1375 | smi_msg->data[i+smi_msg->data_size] | |
1376 | = ipmb_checksum(&(smi_msg->data[i+6]), | |
1377 | smi_msg->data_size-6); | |
1378 | ||
c70d7499 CM |
1379 | /* |
1380 | * Add on the checksum size and the offset from the | |
1381 | * broadcast. | |
1382 | */ | |
1da177e4 LT |
1383 | smi_msg->data_size += 1 + i; |
1384 | ||
1385 | smi_msg->msgid = msgid; | |
1386 | } | |
1387 | ||
1388 | static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg, | |
1389 | struct kernel_ipmi_msg *msg, | |
1390 | struct ipmi_lan_addr *lan_addr, | |
1391 | long msgid, | |
1392 | unsigned char ipmb_seq, | |
1393 | unsigned char source_lun) | |
1394 | { | |
1395 | /* Format the IPMB header data. */ | |
1396 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
1397 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; | |
1398 | smi_msg->data[2] = lan_addr->channel; | |
1399 | smi_msg->data[3] = lan_addr->session_handle; | |
1400 | smi_msg->data[4] = lan_addr->remote_SWID; | |
1401 | smi_msg->data[5] = (msg->netfn << 2) | (lan_addr->lun & 0x3); | |
1402 | smi_msg->data[6] = ipmb_checksum(&(smi_msg->data[4]), 2); | |
1403 | smi_msg->data[7] = lan_addr->local_SWID; | |
1404 | smi_msg->data[8] = (ipmb_seq << 2) | source_lun; | |
1405 | smi_msg->data[9] = msg->cmd; | |
1406 | ||
1407 | /* Now tack on the data to the message. */ | |
1408 | if (msg->data_len > 0) | |
1409 | memcpy(&(smi_msg->data[10]), msg->data, | |
1410 | msg->data_len); | |
1411 | smi_msg->data_size = msg->data_len + 10; | |
1412 | ||
1413 | /* Now calculate the checksum and tack it on. */ | |
1414 | smi_msg->data[smi_msg->data_size] | |
1415 | = ipmb_checksum(&(smi_msg->data[7]), | |
1416 | smi_msg->data_size-7); | |
1417 | ||
c70d7499 CM |
1418 | /* |
1419 | * Add on the checksum size and the offset from the | |
1420 | * broadcast. | |
1421 | */ | |
1da177e4 LT |
1422 | smi_msg->data_size += 1; |
1423 | ||
1424 | smi_msg->msgid = msgid; | |
1425 | } | |
1426 | ||
c70d7499 CM |
1427 | /* |
1428 | * Separate from ipmi_request so that the user does not have to be | |
1429 | * supplied in certain circumstances (mainly at panic time). If | |
1430 | * messages are supplied, they will be freed, even if an error | |
1431 | * occurs. | |
1432 | */ | |
393d2cc3 CM |
1433 | static int i_ipmi_request(ipmi_user_t user, |
1434 | ipmi_smi_t intf, | |
1435 | struct ipmi_addr *addr, | |
1436 | long msgid, | |
1437 | struct kernel_ipmi_msg *msg, | |
1438 | void *user_msg_data, | |
1439 | void *supplied_smi, | |
1440 | struct ipmi_recv_msg *supplied_recv, | |
1441 | int priority, | |
1442 | unsigned char source_address, | |
1443 | unsigned char source_lun, | |
1444 | int retries, | |
1445 | unsigned int retry_time_ms) | |
1da177e4 | 1446 | { |
b2c03941 CM |
1447 | int rv = 0; |
1448 | struct ipmi_smi_msg *smi_msg; | |
1449 | struct ipmi_recv_msg *recv_msg; | |
1450 | unsigned long flags; | |
1451 | struct ipmi_smi_handlers *handlers; | |
1da177e4 LT |
1452 | |
1453 | ||
c70d7499 | 1454 | if (supplied_recv) |
1da177e4 | 1455 | recv_msg = supplied_recv; |
c70d7499 | 1456 | else { |
1da177e4 | 1457 | recv_msg = ipmi_alloc_recv_msg(); |
c70d7499 | 1458 | if (recv_msg == NULL) |
1da177e4 | 1459 | return -ENOMEM; |
1da177e4 LT |
1460 | } |
1461 | recv_msg->user_msg_data = user_msg_data; | |
1462 | ||
c70d7499 | 1463 | if (supplied_smi) |
1da177e4 | 1464 | smi_msg = (struct ipmi_smi_msg *) supplied_smi; |
c70d7499 | 1465 | else { |
1da177e4 LT |
1466 | smi_msg = ipmi_alloc_smi_msg(); |
1467 | if (smi_msg == NULL) { | |
1468 | ipmi_free_recv_msg(recv_msg); | |
1469 | return -ENOMEM; | |
1470 | } | |
1471 | } | |
1472 | ||
b2c03941 CM |
1473 | rcu_read_lock(); |
1474 | handlers = intf->handlers; | |
1475 | if (!handlers) { | |
1476 | rv = -ENODEV; | |
1477 | goto out_err; | |
1478 | } | |
1479 | ||
1da177e4 | 1480 | recv_msg->user = user; |
393d2cc3 CM |
1481 | if (user) |
1482 | kref_get(&user->refcount); | |
1da177e4 | 1483 | recv_msg->msgid = msgid; |
c70d7499 CM |
1484 | /* |
1485 | * Store the message to send in the receive message so timeout | |
1486 | * responses can get the proper response data. | |
1487 | */ | |
1da177e4 LT |
1488 | recv_msg->msg = *msg; |
1489 | ||
1490 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { | |
1491 | struct ipmi_system_interface_addr *smi_addr; | |
1492 | ||
1493 | if (msg->netfn & 1) { | |
1494 | /* Responses are not allowed to the SMI. */ | |
1495 | rv = -EINVAL; | |
1496 | goto out_err; | |
1497 | } | |
1498 | ||
1499 | smi_addr = (struct ipmi_system_interface_addr *) addr; | |
1500 | if (smi_addr->lun > 3) { | |
b2655f26 | 1501 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1502 | rv = -EINVAL; |
1503 | goto out_err; | |
1504 | } | |
1505 | ||
1506 | memcpy(&recv_msg->addr, smi_addr, sizeof(*smi_addr)); | |
1507 | ||
1508 | if ((msg->netfn == IPMI_NETFN_APP_REQUEST) | |
1509 | && ((msg->cmd == IPMI_SEND_MSG_CMD) | |
1510 | || (msg->cmd == IPMI_GET_MSG_CMD) | |
c70d7499 CM |
1511 | || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD))) { |
1512 | /* | |
1513 | * We don't let the user do these, since we manage | |
1514 | * the sequence numbers. | |
1515 | */ | |
b2655f26 | 1516 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1517 | rv = -EINVAL; |
1518 | goto out_err; | |
1519 | } | |
1520 | ||
b9675136 CM |
1521 | if (((msg->netfn == IPMI_NETFN_APP_REQUEST) |
1522 | && ((msg->cmd == IPMI_COLD_RESET_CMD) | |
1523 | || (msg->cmd == IPMI_WARM_RESET_CMD))) | |
c70d7499 | 1524 | || (msg->netfn == IPMI_NETFN_FIRMWARE_REQUEST)) { |
b9675136 CM |
1525 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); |
1526 | intf->auto_maintenance_timeout | |
1527 | = IPMI_MAINTENANCE_MODE_TIMEOUT; | |
1528 | if (!intf->maintenance_mode | |
c70d7499 | 1529 | && !intf->maintenance_mode_enable) { |
b9675136 CM |
1530 | intf->maintenance_mode_enable = 1; |
1531 | maintenance_mode_update(intf); | |
1532 | } | |
1533 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, | |
1534 | flags); | |
1535 | } | |
1536 | ||
1da177e4 | 1537 | if ((msg->data_len + 2) > IPMI_MAX_MSG_LENGTH) { |
b2655f26 | 1538 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1539 | rv = -EMSGSIZE; |
1540 | goto out_err; | |
1541 | } | |
1542 | ||
1543 | smi_msg->data[0] = (msg->netfn << 2) | (smi_addr->lun & 0x3); | |
1544 | smi_msg->data[1] = msg->cmd; | |
1545 | smi_msg->msgid = msgid; | |
1546 | smi_msg->user_data = recv_msg; | |
1547 | if (msg->data_len > 0) | |
1548 | memcpy(&(smi_msg->data[2]), msg->data, msg->data_len); | |
1549 | smi_msg->data_size = msg->data_len + 2; | |
b2655f26 | 1550 | ipmi_inc_stat(intf, sent_local_commands); |
25176ed6 | 1551 | } else if (is_ipmb_addr(addr) || is_ipmb_bcast_addr(addr)) { |
1da177e4 LT |
1552 | struct ipmi_ipmb_addr *ipmb_addr; |
1553 | unsigned char ipmb_seq; | |
1554 | long seqid; | |
1555 | int broadcast = 0; | |
1556 | ||
9c101fd4 | 1557 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
b2655f26 | 1558 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1559 | rv = -EINVAL; |
1560 | goto out_err; | |
1561 | } | |
1562 | ||
1563 | if (intf->channels[addr->channel].medium | |
c70d7499 | 1564 | != IPMI_CHANNEL_MEDIUM_IPMB) { |
b2655f26 | 1565 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1566 | rv = -EINVAL; |
1567 | goto out_err; | |
1568 | } | |
1569 | ||
1570 | if (retries < 0) { | |
1571 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) | |
1572 | retries = 0; /* Don't retry broadcasts. */ | |
1573 | else | |
1574 | retries = 4; | |
1575 | } | |
1576 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) { | |
c70d7499 CM |
1577 | /* |
1578 | * Broadcasts add a zero at the beginning of the | |
1579 | * message, but otherwise is the same as an IPMB | |
1580 | * address. | |
1581 | */ | |
1da177e4 LT |
1582 | addr->addr_type = IPMI_IPMB_ADDR_TYPE; |
1583 | broadcast = 1; | |
1584 | } | |
1585 | ||
1586 | ||
1587 | /* Default to 1 second retries. */ | |
1588 | if (retry_time_ms == 0) | |
1589 | retry_time_ms = 1000; | |
1590 | ||
c70d7499 CM |
1591 | /* |
1592 | * 9 for the header and 1 for the checksum, plus | |
1593 | * possibly one for the broadcast. | |
1594 | */ | |
1da177e4 | 1595 | if ((msg->data_len + 10 + broadcast) > IPMI_MAX_MSG_LENGTH) { |
b2655f26 | 1596 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1597 | rv = -EMSGSIZE; |
1598 | goto out_err; | |
1599 | } | |
1600 | ||
1601 | ipmb_addr = (struct ipmi_ipmb_addr *) addr; | |
1602 | if (ipmb_addr->lun > 3) { | |
b2655f26 | 1603 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1604 | rv = -EINVAL; |
1605 | goto out_err; | |
1606 | } | |
1607 | ||
1608 | memcpy(&recv_msg->addr, ipmb_addr, sizeof(*ipmb_addr)); | |
1609 | ||
1610 | if (recv_msg->msg.netfn & 0x1) { | |
c70d7499 CM |
1611 | /* |
1612 | * It's a response, so use the user's sequence | |
1613 | * from msgid. | |
1614 | */ | |
b2655f26 | 1615 | ipmi_inc_stat(intf, sent_ipmb_responses); |
1da177e4 LT |
1616 | format_ipmb_msg(smi_msg, msg, ipmb_addr, msgid, |
1617 | msgid, broadcast, | |
1618 | source_address, source_lun); | |
1619 | ||
c70d7499 CM |
1620 | /* |
1621 | * Save the receive message so we can use it | |
1622 | * to deliver the response. | |
1623 | */ | |
1da177e4 LT |
1624 | smi_msg->user_data = recv_msg; |
1625 | } else { | |
1626 | /* It's a command, so get a sequence for it. */ | |
1627 | ||
1628 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1629 | ||
c70d7499 CM |
1630 | /* |
1631 | * Create a sequence number with a 1 second | |
1632 | * timeout and 4 retries. | |
1633 | */ | |
1da177e4 LT |
1634 | rv = intf_next_seq(intf, |
1635 | recv_msg, | |
1636 | retry_time_ms, | |
1637 | retries, | |
1638 | broadcast, | |
1639 | &ipmb_seq, | |
1640 | &seqid); | |
1641 | if (rv) { | |
c70d7499 CM |
1642 | /* |
1643 | * We have used up all the sequence numbers, | |
1644 | * probably, so abort. | |
1645 | */ | |
1da177e4 LT |
1646 | spin_unlock_irqrestore(&(intf->seq_lock), |
1647 | flags); | |
1648 | goto out_err; | |
1649 | } | |
1650 | ||
25176ed6 CM |
1651 | ipmi_inc_stat(intf, sent_ipmb_commands); |
1652 | ||
c70d7499 CM |
1653 | /* |
1654 | * Store the sequence number in the message, | |
1655 | * so that when the send message response | |
1656 | * comes back we can start the timer. | |
1657 | */ | |
1da177e4 LT |
1658 | format_ipmb_msg(smi_msg, msg, ipmb_addr, |
1659 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1660 | ipmb_seq, broadcast, | |
1661 | source_address, source_lun); | |
1662 | ||
c70d7499 CM |
1663 | /* |
1664 | * Copy the message into the recv message data, so we | |
1665 | * can retransmit it later if necessary. | |
1666 | */ | |
1da177e4 LT |
1667 | memcpy(recv_msg->msg_data, smi_msg->data, |
1668 | smi_msg->data_size); | |
1669 | recv_msg->msg.data = recv_msg->msg_data; | |
1670 | recv_msg->msg.data_len = smi_msg->data_size; | |
1671 | ||
c70d7499 CM |
1672 | /* |
1673 | * We don't unlock until here, because we need | |
1674 | * to copy the completed message into the | |
1675 | * recv_msg before we release the lock. | |
1676 | * Otherwise, race conditions may bite us. I | |
1677 | * know that's pretty paranoid, but I prefer | |
1678 | * to be correct. | |
1679 | */ | |
1da177e4 LT |
1680 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
1681 | } | |
25176ed6 | 1682 | } else if (is_lan_addr(addr)) { |
1da177e4 LT |
1683 | struct ipmi_lan_addr *lan_addr; |
1684 | unsigned char ipmb_seq; | |
1685 | long seqid; | |
1686 | ||
12fc1d7b | 1687 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
b2655f26 | 1688 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1689 | rv = -EINVAL; |
1690 | goto out_err; | |
1691 | } | |
1692 | ||
1693 | if ((intf->channels[addr->channel].medium | |
c70d7499 | 1694 | != IPMI_CHANNEL_MEDIUM_8023LAN) |
1da177e4 | 1695 | && (intf->channels[addr->channel].medium |
c70d7499 | 1696 | != IPMI_CHANNEL_MEDIUM_ASYNC)) { |
b2655f26 | 1697 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1698 | rv = -EINVAL; |
1699 | goto out_err; | |
1700 | } | |
1701 | ||
1702 | retries = 4; | |
1703 | ||
1704 | /* Default to 1 second retries. */ | |
1705 | if (retry_time_ms == 0) | |
1706 | retry_time_ms = 1000; | |
1707 | ||
1708 | /* 11 for the header and 1 for the checksum. */ | |
1709 | if ((msg->data_len + 12) > IPMI_MAX_MSG_LENGTH) { | |
b2655f26 | 1710 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1711 | rv = -EMSGSIZE; |
1712 | goto out_err; | |
1713 | } | |
1714 | ||
1715 | lan_addr = (struct ipmi_lan_addr *) addr; | |
1716 | if (lan_addr->lun > 3) { | |
b2655f26 | 1717 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1718 | rv = -EINVAL; |
1719 | goto out_err; | |
1720 | } | |
1721 | ||
1722 | memcpy(&recv_msg->addr, lan_addr, sizeof(*lan_addr)); | |
1723 | ||
1724 | if (recv_msg->msg.netfn & 0x1) { | |
c70d7499 CM |
1725 | /* |
1726 | * It's a response, so use the user's sequence | |
1727 | * from msgid. | |
1728 | */ | |
b2655f26 | 1729 | ipmi_inc_stat(intf, sent_lan_responses); |
1da177e4 LT |
1730 | format_lan_msg(smi_msg, msg, lan_addr, msgid, |
1731 | msgid, source_lun); | |
1732 | ||
c70d7499 CM |
1733 | /* |
1734 | * Save the receive message so we can use it | |
1735 | * to deliver the response. | |
1736 | */ | |
1da177e4 LT |
1737 | smi_msg->user_data = recv_msg; |
1738 | } else { | |
1739 | /* It's a command, so get a sequence for it. */ | |
1740 | ||
1741 | spin_lock_irqsave(&(intf->seq_lock), flags); | |
1742 | ||
c70d7499 CM |
1743 | /* |
1744 | * Create a sequence number with a 1 second | |
1745 | * timeout and 4 retries. | |
1746 | */ | |
1da177e4 LT |
1747 | rv = intf_next_seq(intf, |
1748 | recv_msg, | |
1749 | retry_time_ms, | |
1750 | retries, | |
1751 | 0, | |
1752 | &ipmb_seq, | |
1753 | &seqid); | |
1754 | if (rv) { | |
c70d7499 CM |
1755 | /* |
1756 | * We have used up all the sequence numbers, | |
1757 | * probably, so abort. | |
1758 | */ | |
1da177e4 LT |
1759 | spin_unlock_irqrestore(&(intf->seq_lock), |
1760 | flags); | |
1761 | goto out_err; | |
1762 | } | |
1763 | ||
25176ed6 CM |
1764 | ipmi_inc_stat(intf, sent_lan_commands); |
1765 | ||
c70d7499 CM |
1766 | /* |
1767 | * Store the sequence number in the message, | |
1768 | * so that when the send message response | |
1769 | * comes back we can start the timer. | |
1770 | */ | |
1da177e4 LT |
1771 | format_lan_msg(smi_msg, msg, lan_addr, |
1772 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), | |
1773 | ipmb_seq, source_lun); | |
1774 | ||
c70d7499 CM |
1775 | /* |
1776 | * Copy the message into the recv message data, so we | |
1777 | * can retransmit it later if necessary. | |
1778 | */ | |
1da177e4 LT |
1779 | memcpy(recv_msg->msg_data, smi_msg->data, |
1780 | smi_msg->data_size); | |
1781 | recv_msg->msg.data = recv_msg->msg_data; | |
1782 | recv_msg->msg.data_len = smi_msg->data_size; | |
1783 | ||
c70d7499 CM |
1784 | /* |
1785 | * We don't unlock until here, because we need | |
1786 | * to copy the completed message into the | |
1787 | * recv_msg before we release the lock. | |
1788 | * Otherwise, race conditions may bite us. I | |
1789 | * know that's pretty paranoid, but I prefer | |
1790 | * to be correct. | |
1791 | */ | |
1da177e4 LT |
1792 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
1793 | } | |
1794 | } else { | |
1795 | /* Unknown address type. */ | |
b2655f26 | 1796 | ipmi_inc_stat(intf, sent_invalid_commands); |
1da177e4 LT |
1797 | rv = -EINVAL; |
1798 | goto out_err; | |
1799 | } | |
1800 | ||
1801 | #ifdef DEBUG_MSGING | |
1802 | { | |
1803 | int m; | |
e8b33617 | 1804 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
1805 | printk(" %2.2x", smi_msg->data[m]); |
1806 | printk("\n"); | |
1807 | } | |
1808 | #endif | |
b2c03941 CM |
1809 | |
1810 | handlers->sender(intf->send_info, smi_msg, priority); | |
1811 | rcu_read_unlock(); | |
1da177e4 LT |
1812 | |
1813 | return 0; | |
1814 | ||
1815 | out_err: | |
b2c03941 | 1816 | rcu_read_unlock(); |
1da177e4 LT |
1817 | ipmi_free_smi_msg(smi_msg); |
1818 | ipmi_free_recv_msg(recv_msg); | |
1819 | return rv; | |
1820 | } | |
1821 | ||
c14979b9 CM |
1822 | static int check_addr(ipmi_smi_t intf, |
1823 | struct ipmi_addr *addr, | |
1824 | unsigned char *saddr, | |
1825 | unsigned char *lun) | |
1826 | { | |
1827 | if (addr->channel >= IPMI_MAX_CHANNELS) | |
1828 | return -EINVAL; | |
1829 | *lun = intf->channels[addr->channel].lun; | |
1830 | *saddr = intf->channels[addr->channel].address; | |
1831 | return 0; | |
1832 | } | |
1833 | ||
1da177e4 LT |
1834 | int ipmi_request_settime(ipmi_user_t user, |
1835 | struct ipmi_addr *addr, | |
1836 | long msgid, | |
1837 | struct kernel_ipmi_msg *msg, | |
1838 | void *user_msg_data, | |
1839 | int priority, | |
1840 | int retries, | |
1841 | unsigned int retry_time_ms) | |
1842 | { | |
c14979b9 CM |
1843 | unsigned char saddr, lun; |
1844 | int rv; | |
1845 | ||
8a3628d5 | 1846 | if (!user) |
56a55ec6 | 1847 | return -EINVAL; |
c14979b9 CM |
1848 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1849 | if (rv) | |
1850 | return rv; | |
1da177e4 LT |
1851 | return i_ipmi_request(user, |
1852 | user->intf, | |
1853 | addr, | |
1854 | msgid, | |
1855 | msg, | |
1856 | user_msg_data, | |
1857 | NULL, NULL, | |
1858 | priority, | |
c14979b9 CM |
1859 | saddr, |
1860 | lun, | |
1da177e4 LT |
1861 | retries, |
1862 | retry_time_ms); | |
1863 | } | |
c70d7499 | 1864 | EXPORT_SYMBOL(ipmi_request_settime); |
1da177e4 LT |
1865 | |
1866 | int ipmi_request_supply_msgs(ipmi_user_t user, | |
1867 | struct ipmi_addr *addr, | |
1868 | long msgid, | |
1869 | struct kernel_ipmi_msg *msg, | |
1870 | void *user_msg_data, | |
1871 | void *supplied_smi, | |
1872 | struct ipmi_recv_msg *supplied_recv, | |
1873 | int priority) | |
1874 | { | |
c14979b9 CM |
1875 | unsigned char saddr, lun; |
1876 | int rv; | |
1877 | ||
8a3628d5 | 1878 | if (!user) |
56a55ec6 | 1879 | return -EINVAL; |
c14979b9 CM |
1880 | rv = check_addr(user->intf, addr, &saddr, &lun); |
1881 | if (rv) | |
1882 | return rv; | |
1da177e4 LT |
1883 | return i_ipmi_request(user, |
1884 | user->intf, | |
1885 | addr, | |
1886 | msgid, | |
1887 | msg, | |
1888 | user_msg_data, | |
1889 | supplied_smi, | |
1890 | supplied_recv, | |
1891 | priority, | |
c14979b9 CM |
1892 | saddr, |
1893 | lun, | |
1da177e4 LT |
1894 | -1, 0); |
1895 | } | |
c70d7499 | 1896 | EXPORT_SYMBOL(ipmi_request_supply_msgs); |
1da177e4 | 1897 | |
1aa16eea | 1898 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
1899 | static int ipmb_file_read_proc(char *page, char **start, off_t off, |
1900 | int count, int *eof, void *data) | |
1901 | { | |
1902 | char *out = (char *) page; | |
1903 | ipmi_smi_t intf = data; | |
c14979b9 | 1904 | int i; |
8a3628d5 | 1905 | int rv = 0; |
1da177e4 | 1906 | |
e8b33617 | 1907 | for (i = 0; i < IPMI_MAX_CHANNELS; i++) |
c14979b9 CM |
1908 | rv += sprintf(out+rv, "%x ", intf->channels[i].address); |
1909 | out[rv-1] = '\n'; /* Replace the final space with a newline */ | |
1910 | out[rv] = '\0'; | |
1911 | rv++; | |
1912 | return rv; | |
1da177e4 LT |
1913 | } |
1914 | ||
1915 | static int version_file_read_proc(char *page, char **start, off_t off, | |
1916 | int count, int *eof, void *data) | |
1917 | { | |
1918 | char *out = (char *) page; | |
1919 | ipmi_smi_t intf = data; | |
1920 | ||
b2655f26 | 1921 | return sprintf(out, "%u.%u\n", |
50c812b2 CM |
1922 | ipmi_version_major(&intf->bmc->id), |
1923 | ipmi_version_minor(&intf->bmc->id)); | |
1da177e4 LT |
1924 | } |
1925 | ||
1926 | static int stat_file_read_proc(char *page, char **start, off_t off, | |
1927 | int count, int *eof, void *data) | |
1928 | { | |
1929 | char *out = (char *) page; | |
1930 | ipmi_smi_t intf = data; | |
1931 | ||
b2655f26 KB |
1932 | out += sprintf(out, "sent_invalid_commands: %u\n", |
1933 | ipmi_get_stat(intf, sent_invalid_commands)); | |
1934 | out += sprintf(out, "sent_local_commands: %u\n", | |
1935 | ipmi_get_stat(intf, sent_local_commands)); | |
1936 | out += sprintf(out, "handled_local_responses: %u\n", | |
1937 | ipmi_get_stat(intf, handled_local_responses)); | |
1938 | out += sprintf(out, "unhandled_local_responses: %u\n", | |
1939 | ipmi_get_stat(intf, unhandled_local_responses)); | |
1940 | out += sprintf(out, "sent_ipmb_commands: %u\n", | |
1941 | ipmi_get_stat(intf, sent_ipmb_commands)); | |
1942 | out += sprintf(out, "sent_ipmb_command_errs: %u\n", | |
1943 | ipmi_get_stat(intf, sent_ipmb_command_errs)); | |
1944 | out += sprintf(out, "retransmitted_ipmb_commands: %u\n", | |
1945 | ipmi_get_stat(intf, retransmitted_ipmb_commands)); | |
1946 | out += sprintf(out, "timed_out_ipmb_commands: %u\n", | |
1947 | ipmi_get_stat(intf, timed_out_ipmb_commands)); | |
1948 | out += sprintf(out, "timed_out_ipmb_broadcasts: %u\n", | |
1949 | ipmi_get_stat(intf, timed_out_ipmb_broadcasts)); | |
1950 | out += sprintf(out, "sent_ipmb_responses: %u\n", | |
1951 | ipmi_get_stat(intf, sent_ipmb_responses)); | |
1952 | out += sprintf(out, "handled_ipmb_responses: %u\n", | |
1953 | ipmi_get_stat(intf, handled_ipmb_responses)); | |
1954 | out += sprintf(out, "invalid_ipmb_responses: %u\n", | |
1955 | ipmi_get_stat(intf, invalid_ipmb_responses)); | |
1956 | out += sprintf(out, "unhandled_ipmb_responses: %u\n", | |
1957 | ipmi_get_stat(intf, unhandled_ipmb_responses)); | |
1958 | out += sprintf(out, "sent_lan_commands: %u\n", | |
1959 | ipmi_get_stat(intf, sent_lan_commands)); | |
1960 | out += sprintf(out, "sent_lan_command_errs: %u\n", | |
1961 | ipmi_get_stat(intf, sent_lan_command_errs)); | |
1962 | out += sprintf(out, "retransmitted_lan_commands: %u\n", | |
1963 | ipmi_get_stat(intf, retransmitted_lan_commands)); | |
1964 | out += sprintf(out, "timed_out_lan_commands: %u\n", | |
1965 | ipmi_get_stat(intf, timed_out_lan_commands)); | |
1966 | out += sprintf(out, "sent_lan_responses: %u\n", | |
1967 | ipmi_get_stat(intf, sent_lan_responses)); | |
1968 | out += sprintf(out, "handled_lan_responses: %u\n", | |
1969 | ipmi_get_stat(intf, handled_lan_responses)); | |
1970 | out += sprintf(out, "invalid_lan_responses: %u\n", | |
1971 | ipmi_get_stat(intf, invalid_lan_responses)); | |
1972 | out += sprintf(out, "unhandled_lan_responses: %u\n", | |
1973 | ipmi_get_stat(intf, unhandled_lan_responses)); | |
1974 | out += sprintf(out, "handled_commands: %u\n", | |
1975 | ipmi_get_stat(intf, handled_commands)); | |
1976 | out += sprintf(out, "invalid_commands: %u\n", | |
1977 | ipmi_get_stat(intf, invalid_commands)); | |
1978 | out += sprintf(out, "unhandled_commands: %u\n", | |
1979 | ipmi_get_stat(intf, unhandled_commands)); | |
1980 | out += sprintf(out, "invalid_events: %u\n", | |
1981 | ipmi_get_stat(intf, invalid_events)); | |
1982 | out += sprintf(out, "events: %u\n", | |
1983 | ipmi_get_stat(intf, events)); | |
25176ed6 CM |
1984 | out += sprintf(out, "failed rexmit LAN msgs: %u\n", |
1985 | ipmi_get_stat(intf, dropped_rexmit_lan_commands)); | |
1986 | out += sprintf(out, "failed rexmit IPMB msgs: %u\n", | |
1987 | ipmi_get_stat(intf, dropped_rexmit_ipmb_commands)); | |
1da177e4 LT |
1988 | |
1989 | return (out - ((char *) page)); | |
1990 | } | |
1aa16eea | 1991 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
1992 | |
1993 | int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, | |
fa68be0d | 1994 | read_proc_t *read_proc, |
99b76233 | 1995 | void *data) |
1da177e4 | 1996 | { |
1da177e4 | 1997 | int rv = 0; |
3b625943 CM |
1998 | #ifdef CONFIG_PROC_FS |
1999 | struct proc_dir_entry *file; | |
1da177e4 LT |
2000 | struct ipmi_proc_entry *entry; |
2001 | ||
2002 | /* Create a list element. */ | |
2003 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); | |
2004 | if (!entry) | |
2005 | return -ENOMEM; | |
2006 | entry->name = kmalloc(strlen(name)+1, GFP_KERNEL); | |
2007 | if (!entry->name) { | |
2008 | kfree(entry); | |
2009 | return -ENOMEM; | |
2010 | } | |
2011 | strcpy(entry->name, name); | |
2012 | ||
2013 | file = create_proc_entry(name, 0, smi->proc_dir); | |
2014 | if (!file) { | |
2015 | kfree(entry->name); | |
2016 | kfree(entry); | |
2017 | rv = -ENOMEM; | |
2018 | } else { | |
1da177e4 LT |
2019 | file->data = data; |
2020 | file->read_proc = read_proc; | |
1da177e4 | 2021 | |
ac019151 | 2022 | mutex_lock(&smi->proc_entry_lock); |
1da177e4 LT |
2023 | /* Stick it on the list. */ |
2024 | entry->next = smi->proc_entries; | |
2025 | smi->proc_entries = entry; | |
ac019151 | 2026 | mutex_unlock(&smi->proc_entry_lock); |
1da177e4 | 2027 | } |
3b625943 | 2028 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2029 | |
2030 | return rv; | |
2031 | } | |
c70d7499 | 2032 | EXPORT_SYMBOL(ipmi_smi_add_proc_entry); |
1da177e4 LT |
2033 | |
2034 | static int add_proc_entries(ipmi_smi_t smi, int num) | |
2035 | { | |
2036 | int rv = 0; | |
2037 | ||
3b625943 | 2038 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
2039 | sprintf(smi->proc_dir_name, "%d", num); |
2040 | smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); | |
2041 | if (!smi->proc_dir) | |
2042 | rv = -ENOMEM; | |
1da177e4 LT |
2043 | |
2044 | if (rv == 0) | |
2045 | rv = ipmi_smi_add_proc_entry(smi, "stats", | |
fa68be0d | 2046 | stat_file_read_proc, |
99b76233 | 2047 | smi); |
1da177e4 LT |
2048 | |
2049 | if (rv == 0) | |
2050 | rv = ipmi_smi_add_proc_entry(smi, "ipmb", | |
fa68be0d | 2051 | ipmb_file_read_proc, |
99b76233 | 2052 | smi); |
1da177e4 LT |
2053 | |
2054 | if (rv == 0) | |
2055 | rv = ipmi_smi_add_proc_entry(smi, "version", | |
fa68be0d | 2056 | version_file_read_proc, |
99b76233 | 2057 | smi); |
3b625943 | 2058 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2059 | |
2060 | return rv; | |
2061 | } | |
2062 | ||
2063 | static void remove_proc_entries(ipmi_smi_t smi) | |
2064 | { | |
3b625943 | 2065 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
2066 | struct ipmi_proc_entry *entry; |
2067 | ||
ac019151 | 2068 | mutex_lock(&smi->proc_entry_lock); |
1da177e4 LT |
2069 | while (smi->proc_entries) { |
2070 | entry = smi->proc_entries; | |
2071 | smi->proc_entries = entry->next; | |
2072 | ||
2073 | remove_proc_entry(entry->name, smi->proc_dir); | |
2074 | kfree(entry->name); | |
2075 | kfree(entry); | |
2076 | } | |
ac019151 | 2077 | mutex_unlock(&smi->proc_entry_lock); |
1da177e4 | 2078 | remove_proc_entry(smi->proc_dir_name, proc_ipmi_root); |
3b625943 | 2079 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
2080 | } |
2081 | ||
50c812b2 CM |
2082 | static int __find_bmc_guid(struct device *dev, void *data) |
2083 | { | |
2084 | unsigned char *id = data; | |
2085 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2086 | return memcmp(bmc->guid, id, 16) == 0; | |
2087 | } | |
2088 | ||
2089 | static struct bmc_device *ipmi_find_bmc_guid(struct device_driver *drv, | |
2090 | unsigned char *guid) | |
2091 | { | |
2092 | struct device *dev; | |
2093 | ||
2094 | dev = driver_find_device(drv, NULL, guid, __find_bmc_guid); | |
2095 | if (dev) | |
2096 | return dev_get_drvdata(dev); | |
2097 | else | |
2098 | return NULL; | |
2099 | } | |
2100 | ||
2101 | struct prod_dev_id { | |
2102 | unsigned int product_id; | |
2103 | unsigned char device_id; | |
2104 | }; | |
2105 | ||
2106 | static int __find_bmc_prod_dev_id(struct device *dev, void *data) | |
2107 | { | |
2108 | struct prod_dev_id *id = data; | |
2109 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2110 | ||
2111 | return (bmc->id.product_id == id->product_id | |
50c812b2 CM |
2112 | && bmc->id.device_id == id->device_id); |
2113 | } | |
2114 | ||
2115 | static struct bmc_device *ipmi_find_bmc_prod_dev_id( | |
2116 | struct device_driver *drv, | |
f0b55da0 | 2117 | unsigned int product_id, unsigned char device_id) |
50c812b2 CM |
2118 | { |
2119 | struct prod_dev_id id = { | |
2120 | .product_id = product_id, | |
2121 | .device_id = device_id, | |
2122 | }; | |
2123 | struct device *dev; | |
2124 | ||
2125 | dev = driver_find_device(drv, NULL, &id, __find_bmc_prod_dev_id); | |
2126 | if (dev) | |
2127 | return dev_get_drvdata(dev); | |
2128 | else | |
2129 | return NULL; | |
2130 | } | |
2131 | ||
2132 | static ssize_t device_id_show(struct device *dev, | |
2133 | struct device_attribute *attr, | |
2134 | char *buf) | |
2135 | { | |
2136 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2137 | ||
2138 | return snprintf(buf, 10, "%u\n", bmc->id.device_id); | |
2139 | } | |
2140 | ||
2141 | static ssize_t provides_dev_sdrs_show(struct device *dev, | |
2142 | struct device_attribute *attr, | |
2143 | char *buf) | |
2144 | { | |
2145 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2146 | ||
2147 | return snprintf(buf, 10, "%u\n", | |
7947d2cc | 2148 | (bmc->id.device_revision & 0x80) >> 7); |
50c812b2 CM |
2149 | } |
2150 | ||
2151 | static ssize_t revision_show(struct device *dev, struct device_attribute *attr, | |
2152 | char *buf) | |
2153 | { | |
2154 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2155 | ||
2156 | return snprintf(buf, 20, "%u\n", | |
7947d2cc | 2157 | bmc->id.device_revision & 0x0F); |
50c812b2 CM |
2158 | } |
2159 | ||
2160 | static ssize_t firmware_rev_show(struct device *dev, | |
2161 | struct device_attribute *attr, | |
2162 | char *buf) | |
2163 | { | |
2164 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2165 | ||
2166 | return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1, | |
2167 | bmc->id.firmware_revision_2); | |
2168 | } | |
2169 | ||
2170 | static ssize_t ipmi_version_show(struct device *dev, | |
2171 | struct device_attribute *attr, | |
2172 | char *buf) | |
2173 | { | |
2174 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2175 | ||
2176 | return snprintf(buf, 20, "%u.%u\n", | |
2177 | ipmi_version_major(&bmc->id), | |
2178 | ipmi_version_minor(&bmc->id)); | |
2179 | } | |
2180 | ||
2181 | static ssize_t add_dev_support_show(struct device *dev, | |
2182 | struct device_attribute *attr, | |
2183 | char *buf) | |
2184 | { | |
2185 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2186 | ||
2187 | return snprintf(buf, 10, "0x%02x\n", | |
2188 | bmc->id.additional_device_support); | |
2189 | } | |
2190 | ||
2191 | static ssize_t manufacturer_id_show(struct device *dev, | |
2192 | struct device_attribute *attr, | |
2193 | char *buf) | |
2194 | { | |
2195 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2196 | ||
2197 | return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id); | |
2198 | } | |
2199 | ||
2200 | static ssize_t product_id_show(struct device *dev, | |
2201 | struct device_attribute *attr, | |
2202 | char *buf) | |
2203 | { | |
2204 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2205 | ||
2206 | return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id); | |
2207 | } | |
2208 | ||
2209 | static ssize_t aux_firmware_rev_show(struct device *dev, | |
2210 | struct device_attribute *attr, | |
2211 | char *buf) | |
2212 | { | |
2213 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2214 | ||
2215 | return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n", | |
2216 | bmc->id.aux_firmware_revision[3], | |
2217 | bmc->id.aux_firmware_revision[2], | |
2218 | bmc->id.aux_firmware_revision[1], | |
2219 | bmc->id.aux_firmware_revision[0]); | |
2220 | } | |
2221 | ||
2222 | static ssize_t guid_show(struct device *dev, struct device_attribute *attr, | |
2223 | char *buf) | |
2224 | { | |
2225 | struct bmc_device *bmc = dev_get_drvdata(dev); | |
2226 | ||
2227 | return snprintf(buf, 100, "%Lx%Lx\n", | |
2228 | (long long) bmc->guid[0], | |
2229 | (long long) bmc->guid[8]); | |
2230 | } | |
2231 | ||
5e59393e | 2232 | static void remove_files(struct bmc_device *bmc) |
50c812b2 | 2233 | { |
f0b55da0 CM |
2234 | if (!bmc->dev) |
2235 | return; | |
2236 | ||
50c812b2 CM |
2237 | device_remove_file(&bmc->dev->dev, |
2238 | &bmc->device_id_attr); | |
2239 | device_remove_file(&bmc->dev->dev, | |
2240 | &bmc->provides_dev_sdrs_attr); | |
2241 | device_remove_file(&bmc->dev->dev, | |
2242 | &bmc->revision_attr); | |
2243 | device_remove_file(&bmc->dev->dev, | |
2244 | &bmc->firmware_rev_attr); | |
2245 | device_remove_file(&bmc->dev->dev, | |
2246 | &bmc->version_attr); | |
2247 | device_remove_file(&bmc->dev->dev, | |
2248 | &bmc->add_dev_support_attr); | |
2249 | device_remove_file(&bmc->dev->dev, | |
2250 | &bmc->manufacturer_id_attr); | |
2251 | device_remove_file(&bmc->dev->dev, | |
2252 | &bmc->product_id_attr); | |
5e59393e | 2253 | |
50c812b2 CM |
2254 | if (bmc->id.aux_firmware_revision_set) |
2255 | device_remove_file(&bmc->dev->dev, | |
2256 | &bmc->aux_firmware_rev_attr); | |
2257 | if (bmc->guid_set) | |
2258 | device_remove_file(&bmc->dev->dev, | |
2259 | &bmc->guid_attr); | |
5e59393e JG |
2260 | } |
2261 | ||
2262 | static void | |
2263 | cleanup_bmc_device(struct kref *ref) | |
2264 | { | |
2265 | struct bmc_device *bmc; | |
2266 | ||
2267 | bmc = container_of(ref, struct bmc_device, refcount); | |
2268 | ||
2269 | remove_files(bmc); | |
1d5636cc | 2270 | platform_device_unregister(bmc->dev); |
50c812b2 CM |
2271 | kfree(bmc); |
2272 | } | |
2273 | ||
2274 | static void ipmi_bmc_unregister(ipmi_smi_t intf) | |
2275 | { | |
2276 | struct bmc_device *bmc = intf->bmc; | |
2277 | ||
759643b8 CM |
2278 | if (intf->sysfs_name) { |
2279 | sysfs_remove_link(&intf->si_dev->kobj, intf->sysfs_name); | |
2280 | kfree(intf->sysfs_name); | |
2281 | intf->sysfs_name = NULL; | |
2282 | } | |
50c812b2 CM |
2283 | if (intf->my_dev_name) { |
2284 | sysfs_remove_link(&bmc->dev->dev.kobj, intf->my_dev_name); | |
2285 | kfree(intf->my_dev_name); | |
2286 | intf->my_dev_name = NULL; | |
2287 | } | |
2288 | ||
2289 | mutex_lock(&ipmidriver_mutex); | |
2290 | kref_put(&bmc->refcount, cleanup_bmc_device); | |
f0b55da0 | 2291 | intf->bmc = NULL; |
50c812b2 CM |
2292 | mutex_unlock(&ipmidriver_mutex); |
2293 | } | |
2294 | ||
5e59393e JG |
2295 | static int create_files(struct bmc_device *bmc) |
2296 | { | |
2297 | int err; | |
2298 | ||
f0b55da0 | 2299 | bmc->device_id_attr.attr.name = "device_id"; |
f0b55da0 CM |
2300 | bmc->device_id_attr.attr.mode = S_IRUGO; |
2301 | bmc->device_id_attr.show = device_id_show; | |
c7df670b | 2302 | sysfs_attr_init(&bmc->device_id_attr.attr); |
f0b55da0 CM |
2303 | |
2304 | bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs"; | |
f0b55da0 CM |
2305 | bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO; |
2306 | bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show; | |
c7df670b | 2307 | sysfs_attr_init(&bmc->provides_dev_sdrs_attr.attr); |
f0b55da0 CM |
2308 | |
2309 | bmc->revision_attr.attr.name = "revision"; | |
f0b55da0 CM |
2310 | bmc->revision_attr.attr.mode = S_IRUGO; |
2311 | bmc->revision_attr.show = revision_show; | |
c7df670b | 2312 | sysfs_attr_init(&bmc->revision_attr.attr); |
f0b55da0 CM |
2313 | |
2314 | bmc->firmware_rev_attr.attr.name = "firmware_revision"; | |
f0b55da0 CM |
2315 | bmc->firmware_rev_attr.attr.mode = S_IRUGO; |
2316 | bmc->firmware_rev_attr.show = firmware_rev_show; | |
c7df670b | 2317 | sysfs_attr_init(&bmc->firmware_rev_attr.attr); |
f0b55da0 CM |
2318 | |
2319 | bmc->version_attr.attr.name = "ipmi_version"; | |
f0b55da0 CM |
2320 | bmc->version_attr.attr.mode = S_IRUGO; |
2321 | bmc->version_attr.show = ipmi_version_show; | |
c7df670b | 2322 | sysfs_attr_init(&bmc->version_attr.attr); |
f0b55da0 CM |
2323 | |
2324 | bmc->add_dev_support_attr.attr.name = "additional_device_support"; | |
f0b55da0 CM |
2325 | bmc->add_dev_support_attr.attr.mode = S_IRUGO; |
2326 | bmc->add_dev_support_attr.show = add_dev_support_show; | |
c7df670b | 2327 | sysfs_attr_init(&bmc->add_dev_support_attr.attr); |
f0b55da0 CM |
2328 | |
2329 | bmc->manufacturer_id_attr.attr.name = "manufacturer_id"; | |
f0b55da0 CM |
2330 | bmc->manufacturer_id_attr.attr.mode = S_IRUGO; |
2331 | bmc->manufacturer_id_attr.show = manufacturer_id_show; | |
c7df670b | 2332 | sysfs_attr_init(&bmc->manufacturer_id_attr.attr); |
f0b55da0 CM |
2333 | |
2334 | bmc->product_id_attr.attr.name = "product_id"; | |
f0b55da0 CM |
2335 | bmc->product_id_attr.attr.mode = S_IRUGO; |
2336 | bmc->product_id_attr.show = product_id_show; | |
c7df670b | 2337 | sysfs_attr_init(&bmc->product_id_attr.attr); |
f0b55da0 CM |
2338 | |
2339 | bmc->guid_attr.attr.name = "guid"; | |
f0b55da0 CM |
2340 | bmc->guid_attr.attr.mode = S_IRUGO; |
2341 | bmc->guid_attr.show = guid_show; | |
c7df670b | 2342 | sysfs_attr_init(&bmc->guid_attr.attr); |
f0b55da0 CM |
2343 | |
2344 | bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision"; | |
f0b55da0 CM |
2345 | bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO; |
2346 | bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show; | |
c7df670b | 2347 | sysfs_attr_init(&bmc->aux_firmware_rev_attr.attr); |
f0b55da0 | 2348 | |
5e59393e JG |
2349 | err = device_create_file(&bmc->dev->dev, |
2350 | &bmc->device_id_attr); | |
c70d7499 CM |
2351 | if (err) |
2352 | goto out; | |
5e59393e JG |
2353 | err = device_create_file(&bmc->dev->dev, |
2354 | &bmc->provides_dev_sdrs_attr); | |
c70d7499 CM |
2355 | if (err) |
2356 | goto out_devid; | |
5e59393e JG |
2357 | err = device_create_file(&bmc->dev->dev, |
2358 | &bmc->revision_attr); | |
c70d7499 CM |
2359 | if (err) |
2360 | goto out_sdrs; | |
5e59393e JG |
2361 | err = device_create_file(&bmc->dev->dev, |
2362 | &bmc->firmware_rev_attr); | |
c70d7499 CM |
2363 | if (err) |
2364 | goto out_rev; | |
5e59393e JG |
2365 | err = device_create_file(&bmc->dev->dev, |
2366 | &bmc->version_attr); | |
c70d7499 CM |
2367 | if (err) |
2368 | goto out_firm; | |
5e59393e JG |
2369 | err = device_create_file(&bmc->dev->dev, |
2370 | &bmc->add_dev_support_attr); | |
c70d7499 CM |
2371 | if (err) |
2372 | goto out_version; | |
5e59393e JG |
2373 | err = device_create_file(&bmc->dev->dev, |
2374 | &bmc->manufacturer_id_attr); | |
c70d7499 CM |
2375 | if (err) |
2376 | goto out_add_dev; | |
5e59393e JG |
2377 | err = device_create_file(&bmc->dev->dev, |
2378 | &bmc->product_id_attr); | |
c70d7499 CM |
2379 | if (err) |
2380 | goto out_manu; | |
5e59393e JG |
2381 | if (bmc->id.aux_firmware_revision_set) { |
2382 | err = device_create_file(&bmc->dev->dev, | |
2383 | &bmc->aux_firmware_rev_attr); | |
c70d7499 CM |
2384 | if (err) |
2385 | goto out_prod_id; | |
5e59393e JG |
2386 | } |
2387 | if (bmc->guid_set) { | |
2388 | err = device_create_file(&bmc->dev->dev, | |
2389 | &bmc->guid_attr); | |
c70d7499 CM |
2390 | if (err) |
2391 | goto out_aux_firm; | |
5e59393e JG |
2392 | } |
2393 | ||
2394 | return 0; | |
2395 | ||
2396 | out_aux_firm: | |
2397 | if (bmc->id.aux_firmware_revision_set) | |
2398 | device_remove_file(&bmc->dev->dev, | |
2399 | &bmc->aux_firmware_rev_attr); | |
2400 | out_prod_id: | |
2401 | device_remove_file(&bmc->dev->dev, | |
2402 | &bmc->product_id_attr); | |
2403 | out_manu: | |
2404 | device_remove_file(&bmc->dev->dev, | |
2405 | &bmc->manufacturer_id_attr); | |
2406 | out_add_dev: | |
2407 | device_remove_file(&bmc->dev->dev, | |
2408 | &bmc->add_dev_support_attr); | |
2409 | out_version: | |
2410 | device_remove_file(&bmc->dev->dev, | |
2411 | &bmc->version_attr); | |
2412 | out_firm: | |
2413 | device_remove_file(&bmc->dev->dev, | |
2414 | &bmc->firmware_rev_attr); | |
2415 | out_rev: | |
2416 | device_remove_file(&bmc->dev->dev, | |
2417 | &bmc->revision_attr); | |
2418 | out_sdrs: | |
2419 | device_remove_file(&bmc->dev->dev, | |
2420 | &bmc->provides_dev_sdrs_attr); | |
2421 | out_devid: | |
2422 | device_remove_file(&bmc->dev->dev, | |
2423 | &bmc->device_id_attr); | |
2424 | out: | |
2425 | return err; | |
2426 | } | |
2427 | ||
759643b8 CM |
2428 | static int ipmi_bmc_register(ipmi_smi_t intf, int ifnum, |
2429 | const char *sysfs_name) | |
50c812b2 CM |
2430 | { |
2431 | int rv; | |
2432 | struct bmc_device *bmc = intf->bmc; | |
2433 | struct bmc_device *old_bmc; | |
2434 | int size; | |
2435 | char dummy[1]; | |
2436 | ||
2437 | mutex_lock(&ipmidriver_mutex); | |
2438 | ||
2439 | /* | |
2440 | * Try to find if there is an bmc_device struct | |
2441 | * representing the interfaced BMC already | |
2442 | */ | |
2443 | if (bmc->guid_set) | |
fe2d5ffc | 2444 | old_bmc = ipmi_find_bmc_guid(&ipmidriver.driver, bmc->guid); |
50c812b2 | 2445 | else |
fe2d5ffc | 2446 | old_bmc = ipmi_find_bmc_prod_dev_id(&ipmidriver.driver, |
50c812b2 CM |
2447 | bmc->id.product_id, |
2448 | bmc->id.device_id); | |
2449 | ||
2450 | /* | |
2451 | * If there is already an bmc_device, free the new one, | |
2452 | * otherwise register the new BMC device | |
2453 | */ | |
2454 | if (old_bmc) { | |
2455 | kfree(bmc); | |
2456 | intf->bmc = old_bmc; | |
2457 | bmc = old_bmc; | |
2458 | ||
2459 | kref_get(&bmc->refcount); | |
2460 | mutex_unlock(&ipmidriver_mutex); | |
2461 | ||
2462 | printk(KERN_INFO | |
2463 | "ipmi: interfacing existing BMC (man_id: 0x%6.6x," | |
2464 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
2465 | bmc->id.manufacturer_id, | |
2466 | bmc->id.product_id, | |
2467 | bmc->id.device_id); | |
2468 | } else { | |
f0b55da0 CM |
2469 | char name[14]; |
2470 | unsigned char orig_dev_id = bmc->id.device_id; | |
2471 | int warn_printed = 0; | |
2472 | ||
2473 | snprintf(name, sizeof(name), | |
2474 | "ipmi_bmc.%4.4x", bmc->id.product_id); | |
2475 | ||
fe2d5ffc | 2476 | while (ipmi_find_bmc_prod_dev_id(&ipmidriver.driver, |
f0b55da0 | 2477 | bmc->id.product_id, |
1d5636cc | 2478 | bmc->id.device_id)) { |
f0b55da0 CM |
2479 | if (!warn_printed) { |
2480 | printk(KERN_WARNING PFX | |
2481 | "This machine has two different BMCs" | |
2482 | " with the same product id and device" | |
2483 | " id. This is an error in the" | |
2484 | " firmware, but incrementing the" | |
2485 | " device id to work around the problem." | |
2486 | " Prod ID = 0x%x, Dev ID = 0x%x\n", | |
2487 | bmc->id.product_id, bmc->id.device_id); | |
2488 | warn_printed = 1; | |
2489 | } | |
2490 | bmc->id.device_id++; /* Wraps at 255 */ | |
2491 | if (bmc->id.device_id == orig_dev_id) { | |
2492 | printk(KERN_ERR PFX | |
2493 | "Out of device ids!\n"); | |
2494 | break; | |
2495 | } | |
2496 | } | |
2497 | ||
2498 | bmc->dev = platform_device_alloc(name, bmc->id.device_id); | |
8a3628d5 | 2499 | if (!bmc->dev) { |
f0b55da0 | 2500 | mutex_unlock(&ipmidriver_mutex); |
50c812b2 CM |
2501 | printk(KERN_ERR |
2502 | "ipmi_msghandler:" | |
2503 | " Unable to allocate platform device\n"); | |
2504 | return -ENOMEM; | |
2505 | } | |
fe2d5ffc | 2506 | bmc->dev->dev.driver = &ipmidriver.driver; |
50c812b2 CM |
2507 | dev_set_drvdata(&bmc->dev->dev, bmc); |
2508 | kref_init(&bmc->refcount); | |
2509 | ||
b48f5457 | 2510 | rv = platform_device_add(bmc->dev); |
50c812b2 CM |
2511 | mutex_unlock(&ipmidriver_mutex); |
2512 | if (rv) { | |
f0b55da0 CM |
2513 | platform_device_put(bmc->dev); |
2514 | bmc->dev = NULL; | |
50c812b2 CM |
2515 | printk(KERN_ERR |
2516 | "ipmi_msghandler:" | |
2517 | " Unable to register bmc device: %d\n", | |
2518 | rv); | |
c70d7499 CM |
2519 | /* |
2520 | * Don't go to out_err, you can only do that if | |
2521 | * the device is registered already. | |
2522 | */ | |
50c812b2 CM |
2523 | return rv; |
2524 | } | |
2525 | ||
5e59393e JG |
2526 | rv = create_files(bmc); |
2527 | if (rv) { | |
2528 | mutex_lock(&ipmidriver_mutex); | |
2529 | platform_device_unregister(bmc->dev); | |
2530 | mutex_unlock(&ipmidriver_mutex); | |
2531 | ||
2532 | return rv; | |
2533 | } | |
50c812b2 | 2534 | |
279fbd0c MS |
2535 | dev_info(intf->si_dev, "Found new BMC (man_id: 0x%6.6x, " |
2536 | "prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", | |
2537 | bmc->id.manufacturer_id, | |
2538 | bmc->id.product_id, | |
2539 | bmc->id.device_id); | |
50c812b2 CM |
2540 | } |
2541 | ||
2542 | /* | |
2543 | * create symlink from system interface device to bmc device | |
2544 | * and back. | |
2545 | */ | |
759643b8 CM |
2546 | intf->sysfs_name = kstrdup(sysfs_name, GFP_KERNEL); |
2547 | if (!intf->sysfs_name) { | |
2548 | rv = -ENOMEM; | |
2549 | printk(KERN_ERR | |
2550 | "ipmi_msghandler: allocate link to BMC: %d\n", | |
2551 | rv); | |
2552 | goto out_err; | |
2553 | } | |
2554 | ||
50c812b2 | 2555 | rv = sysfs_create_link(&intf->si_dev->kobj, |
759643b8 | 2556 | &bmc->dev->dev.kobj, intf->sysfs_name); |
50c812b2 | 2557 | if (rv) { |
759643b8 CM |
2558 | kfree(intf->sysfs_name); |
2559 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2560 | printk(KERN_ERR |
2561 | "ipmi_msghandler: Unable to create bmc symlink: %d\n", | |
2562 | rv); | |
2563 | goto out_err; | |
2564 | } | |
2565 | ||
759643b8 | 2566 | size = snprintf(dummy, 0, "ipmi%d", ifnum); |
50c812b2 CM |
2567 | intf->my_dev_name = kmalloc(size+1, GFP_KERNEL); |
2568 | if (!intf->my_dev_name) { | |
759643b8 CM |
2569 | kfree(intf->sysfs_name); |
2570 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2571 | rv = -ENOMEM; |
2572 | printk(KERN_ERR | |
2573 | "ipmi_msghandler: allocate link from BMC: %d\n", | |
2574 | rv); | |
2575 | goto out_err; | |
2576 | } | |
759643b8 | 2577 | snprintf(intf->my_dev_name, size+1, "ipmi%d", ifnum); |
50c812b2 CM |
2578 | |
2579 | rv = sysfs_create_link(&bmc->dev->dev.kobj, &intf->si_dev->kobj, | |
2580 | intf->my_dev_name); | |
2581 | if (rv) { | |
759643b8 CM |
2582 | kfree(intf->sysfs_name); |
2583 | intf->sysfs_name = NULL; | |
50c812b2 CM |
2584 | kfree(intf->my_dev_name); |
2585 | intf->my_dev_name = NULL; | |
2586 | printk(KERN_ERR | |
2587 | "ipmi_msghandler:" | |
2588 | " Unable to create symlink to bmc: %d\n", | |
2589 | rv); | |
2590 | goto out_err; | |
2591 | } | |
2592 | ||
2593 | return 0; | |
2594 | ||
2595 | out_err: | |
2596 | ipmi_bmc_unregister(intf); | |
2597 | return rv; | |
2598 | } | |
2599 | ||
2600 | static int | |
2601 | send_guid_cmd(ipmi_smi_t intf, int chan) | |
2602 | { | |
2603 | struct kernel_ipmi_msg msg; | |
2604 | struct ipmi_system_interface_addr si; | |
2605 | ||
2606 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2607 | si.channel = IPMI_BMC_CHANNEL; | |
2608 | si.lun = 0; | |
2609 | ||
2610 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2611 | msg.cmd = IPMI_GET_DEVICE_GUID_CMD; | |
2612 | msg.data = NULL; | |
2613 | msg.data_len = 0; | |
2614 | return i_ipmi_request(NULL, | |
2615 | intf, | |
2616 | (struct ipmi_addr *) &si, | |
2617 | 0, | |
2618 | &msg, | |
2619 | intf, | |
2620 | NULL, | |
2621 | NULL, | |
2622 | 0, | |
2623 | intf->channels[0].address, | |
2624 | intf->channels[0].lun, | |
2625 | -1, 0); | |
2626 | } | |
2627 | ||
2628 | static void | |
2629 | guid_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) | |
2630 | { | |
2631 | if ((msg->addr.addr_type != IPMI_SYSTEM_INTERFACE_ADDR_TYPE) | |
2632 | || (msg->msg.netfn != IPMI_NETFN_APP_RESPONSE) | |
2633 | || (msg->msg.cmd != IPMI_GET_DEVICE_GUID_CMD)) | |
2634 | /* Not for me */ | |
2635 | return; | |
2636 | ||
2637 | if (msg->msg.data[0] != 0) { | |
2638 | /* Error from getting the GUID, the BMC doesn't have one. */ | |
2639 | intf->bmc->guid_set = 0; | |
2640 | goto out; | |
2641 | } | |
2642 | ||
2643 | if (msg->msg.data_len < 17) { | |
2644 | intf->bmc->guid_set = 0; | |
2645 | printk(KERN_WARNING PFX | |
2646 | "guid_handler: The GUID response from the BMC was too" | |
2647 | " short, it was %d but should have been 17. Assuming" | |
2648 | " GUID is not available.\n", | |
2649 | msg->msg.data_len); | |
2650 | goto out; | |
2651 | } | |
2652 | ||
2653 | memcpy(intf->bmc->guid, msg->msg.data, 16); | |
2654 | intf->bmc->guid_set = 1; | |
2655 | out: | |
2656 | wake_up(&intf->waitq); | |
2657 | } | |
2658 | ||
2659 | static void | |
2660 | get_guid(ipmi_smi_t intf) | |
2661 | { | |
2662 | int rv; | |
2663 | ||
2664 | intf->bmc->guid_set = 0x2; | |
2665 | intf->null_user_handler = guid_handler; | |
2666 | rv = send_guid_cmd(intf, 0); | |
2667 | if (rv) | |
2668 | /* Send failed, no GUID available. */ | |
2669 | intf->bmc->guid_set = 0; | |
2670 | wait_event(intf->waitq, intf->bmc->guid_set != 2); | |
2671 | intf->null_user_handler = NULL; | |
2672 | } | |
2673 | ||
1da177e4 LT |
2674 | static int |
2675 | send_channel_info_cmd(ipmi_smi_t intf, int chan) | |
2676 | { | |
2677 | struct kernel_ipmi_msg msg; | |
2678 | unsigned char data[1]; | |
2679 | struct ipmi_system_interface_addr si; | |
2680 | ||
2681 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
2682 | si.channel = IPMI_BMC_CHANNEL; | |
2683 | si.lun = 0; | |
2684 | ||
2685 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
2686 | msg.cmd = IPMI_GET_CHANNEL_INFO_CMD; | |
2687 | msg.data = data; | |
2688 | msg.data_len = 1; | |
2689 | data[0] = chan; | |
2690 | return i_ipmi_request(NULL, | |
2691 | intf, | |
2692 | (struct ipmi_addr *) &si, | |
2693 | 0, | |
2694 | &msg, | |
56a55ec6 | 2695 | intf, |
1da177e4 LT |
2696 | NULL, |
2697 | NULL, | |
2698 | 0, | |
c14979b9 CM |
2699 | intf->channels[0].address, |
2700 | intf->channels[0].lun, | |
1da177e4 LT |
2701 | -1, 0); |
2702 | } | |
2703 | ||
2704 | static void | |
56a55ec6 | 2705 | channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 LT |
2706 | { |
2707 | int rv = 0; | |
2708 | int chan; | |
2709 | ||
56a55ec6 CM |
2710 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
2711 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
c70d7499 | 2712 | && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD)) { |
1da177e4 | 2713 | /* It's the one we want */ |
56a55ec6 | 2714 | if (msg->msg.data[0] != 0) { |
1da177e4 LT |
2715 | /* Got an error from the channel, just go on. */ |
2716 | ||
56a55ec6 | 2717 | if (msg->msg.data[0] == IPMI_INVALID_COMMAND_ERR) { |
c70d7499 CM |
2718 | /* |
2719 | * If the MC does not support this | |
2720 | * command, that is legal. We just | |
2721 | * assume it has one IPMB at channel | |
2722 | * zero. | |
2723 | */ | |
1da177e4 LT |
2724 | intf->channels[0].medium |
2725 | = IPMI_CHANNEL_MEDIUM_IPMB; | |
2726 | intf->channels[0].protocol | |
2727 | = IPMI_CHANNEL_PROTOCOL_IPMB; | |
2728 | rv = -ENOSYS; | |
2729 | ||
2730 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2731 | wake_up(&intf->waitq); | |
2732 | goto out; | |
2733 | } | |
2734 | goto next_channel; | |
2735 | } | |
56a55ec6 | 2736 | if (msg->msg.data_len < 4) { |
1da177e4 LT |
2737 | /* Message not big enough, just go on. */ |
2738 | goto next_channel; | |
2739 | } | |
2740 | chan = intf->curr_channel; | |
56a55ec6 CM |
2741 | intf->channels[chan].medium = msg->msg.data[2] & 0x7f; |
2742 | intf->channels[chan].protocol = msg->msg.data[3] & 0x1f; | |
1da177e4 | 2743 | |
c70d7499 | 2744 | next_channel: |
1da177e4 LT |
2745 | intf->curr_channel++; |
2746 | if (intf->curr_channel >= IPMI_MAX_CHANNELS) | |
2747 | wake_up(&intf->waitq); | |
2748 | else | |
2749 | rv = send_channel_info_cmd(intf, intf->curr_channel); | |
2750 | ||
2751 | if (rv) { | |
2752 | /* Got an error somehow, just give up. */ | |
2753 | intf->curr_channel = IPMI_MAX_CHANNELS; | |
2754 | wake_up(&intf->waitq); | |
2755 | ||
2756 | printk(KERN_WARNING PFX | |
2757 | "Error sending channel information: %d\n", | |
2758 | rv); | |
2759 | } | |
2760 | } | |
2761 | out: | |
2762 | return; | |
2763 | } | |
2764 | ||
fcfa4724 CM |
2765 | void ipmi_poll_interface(ipmi_user_t user) |
2766 | { | |
2767 | ipmi_smi_t intf = user->intf; | |
2768 | ||
2769 | if (intf->handlers->poll) | |
2770 | intf->handlers->poll(intf->send_info); | |
2771 | } | |
c70d7499 | 2772 | EXPORT_SYMBOL(ipmi_poll_interface); |
fcfa4724 | 2773 | |
1da177e4 LT |
2774 | int ipmi_register_smi(struct ipmi_smi_handlers *handlers, |
2775 | void *send_info, | |
50c812b2 CM |
2776 | struct ipmi_device_id *device_id, |
2777 | struct device *si_dev, | |
759643b8 | 2778 | const char *sysfs_name, |
453823ba | 2779 | unsigned char slave_addr) |
1da177e4 LT |
2780 | { |
2781 | int i, j; | |
2782 | int rv; | |
393d2cc3 | 2783 | ipmi_smi_t intf; |
bca0324d | 2784 | ipmi_smi_t tintf; |
bca0324d | 2785 | struct list_head *link; |
1da177e4 | 2786 | |
c70d7499 CM |
2787 | /* |
2788 | * Make sure the driver is actually initialized, this handles | |
2789 | * problems with initialization order. | |
2790 | */ | |
1da177e4 LT |
2791 | if (!initialized) { |
2792 | rv = ipmi_init_msghandler(); | |
2793 | if (rv) | |
2794 | return rv; | |
c70d7499 CM |
2795 | /* |
2796 | * The init code doesn't return an error if it was turned | |
2797 | * off, but it won't initialize. Check that. | |
2798 | */ | |
1da177e4 LT |
2799 | if (!initialized) |
2800 | return -ENODEV; | |
2801 | } | |
2802 | ||
dd00cc48 | 2803 | intf = kzalloc(sizeof(*intf), GFP_KERNEL); |
393d2cc3 | 2804 | if (!intf) |
1da177e4 | 2805 | return -ENOMEM; |
b2c03941 CM |
2806 | |
2807 | intf->ipmi_version_major = ipmi_version_major(device_id); | |
2808 | intf->ipmi_version_minor = ipmi_version_minor(device_id); | |
2809 | ||
50c812b2 CM |
2810 | intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL); |
2811 | if (!intf->bmc) { | |
2812 | kfree(intf); | |
2813 | return -ENOMEM; | |
2814 | } | |
bca0324d | 2815 | intf->intf_num = -1; /* Mark it invalid for now. */ |
393d2cc3 | 2816 | kref_init(&intf->refcount); |
50c812b2 CM |
2817 | intf->bmc->id = *device_id; |
2818 | intf->si_dev = si_dev; | |
393d2cc3 CM |
2819 | for (j = 0; j < IPMI_MAX_CHANNELS; j++) { |
2820 | intf->channels[j].address = IPMI_BMC_SLAVE_ADDR; | |
2821 | intf->channels[j].lun = 2; | |
2822 | } | |
2823 | if (slave_addr != 0) | |
2824 | intf->channels[0].address = slave_addr; | |
2825 | INIT_LIST_HEAD(&intf->users); | |
2826 | intf->handlers = handlers; | |
2827 | intf->send_info = send_info; | |
2828 | spin_lock_init(&intf->seq_lock); | |
2829 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) { | |
2830 | intf->seq_table[j].inuse = 0; | |
2831 | intf->seq_table[j].seqid = 0; | |
2832 | } | |
2833 | intf->curr_seq = 0; | |
2834 | #ifdef CONFIG_PROC_FS | |
ac019151 | 2835 | mutex_init(&intf->proc_entry_lock); |
393d2cc3 CM |
2836 | #endif |
2837 | spin_lock_init(&intf->waiting_msgs_lock); | |
2838 | INIT_LIST_HEAD(&intf->waiting_msgs); | |
2839 | spin_lock_init(&intf->events_lock); | |
2840 | INIT_LIST_HEAD(&intf->waiting_events); | |
2841 | intf->waiting_events_count = 0; | |
d6dfd131 | 2842 | mutex_init(&intf->cmd_rcvrs_mutex); |
b9675136 | 2843 | spin_lock_init(&intf->maintenance_mode_lock); |
393d2cc3 CM |
2844 | INIT_LIST_HEAD(&intf->cmd_rcvrs); |
2845 | init_waitqueue_head(&intf->waitq); | |
b2655f26 KB |
2846 | for (i = 0; i < IPMI_NUM_STATS; i++) |
2847 | atomic_set(&intf->stats[i], 0); | |
393d2cc3 | 2848 | |
393d2cc3 | 2849 | intf->proc_dir = NULL; |
1da177e4 | 2850 | |
b2c03941 | 2851 | mutex_lock(&smi_watchers_mutex); |
bca0324d CM |
2852 | mutex_lock(&ipmi_interfaces_mutex); |
2853 | /* Look for a hole in the numbers. */ | |
2854 | i = 0; | |
2855 | link = &ipmi_interfaces; | |
2856 | list_for_each_entry_rcu(tintf, &ipmi_interfaces, link) { | |
2857 | if (tintf->intf_num != i) { | |
2858 | link = &tintf->link; | |
1da177e4 LT |
2859 | break; |
2860 | } | |
bca0324d | 2861 | i++; |
1da177e4 | 2862 | } |
bca0324d CM |
2863 | /* Add the new interface in numeric order. */ |
2864 | if (i == 0) | |
2865 | list_add_rcu(&intf->link, &ipmi_interfaces); | |
2866 | else | |
2867 | list_add_tail_rcu(&intf->link, link); | |
1da177e4 | 2868 | |
453823ba CM |
2869 | rv = handlers->start_processing(send_info, intf); |
2870 | if (rv) | |
2871 | goto out; | |
1da177e4 | 2872 | |
50c812b2 CM |
2873 | get_guid(intf); |
2874 | ||
b2c03941 | 2875 | if ((intf->ipmi_version_major > 1) |
c70d7499 CM |
2876 | || ((intf->ipmi_version_major == 1) |
2877 | && (intf->ipmi_version_minor >= 5))) { | |
2878 | /* | |
2879 | * Start scanning the channels to see what is | |
2880 | * available. | |
2881 | */ | |
393d2cc3 CM |
2882 | intf->null_user_handler = channel_handler; |
2883 | intf->curr_channel = 0; | |
2884 | rv = send_channel_info_cmd(intf, 0); | |
2885 | if (rv) | |
2886 | goto out; | |
1da177e4 | 2887 | |
393d2cc3 CM |
2888 | /* Wait for the channel info to be read. */ |
2889 | wait_event(intf->waitq, | |
2890 | intf->curr_channel >= IPMI_MAX_CHANNELS); | |
50c812b2 | 2891 | intf->null_user_handler = NULL; |
393d2cc3 CM |
2892 | } else { |
2893 | /* Assume a single IPMB channel at zero. */ | |
2894 | intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; | |
2895 | intf->channels[0].protocol = IPMI_CHANNEL_PROTOCOL_IPMB; | |
9a2845c4 | 2896 | intf->curr_channel = IPMI_MAX_CHANNELS; |
1da177e4 LT |
2897 | } |
2898 | ||
393d2cc3 CM |
2899 | if (rv == 0) |
2900 | rv = add_proc_entries(intf, i); | |
1da177e4 | 2901 | |
759643b8 | 2902 | rv = ipmi_bmc_register(intf, i, sysfs_name); |
50c812b2 | 2903 | |
393d2cc3 | 2904 | out: |
1da177e4 | 2905 | if (rv) { |
393d2cc3 CM |
2906 | if (intf->proc_dir) |
2907 | remove_proc_entries(intf); | |
b2c03941 | 2908 | intf->handlers = NULL; |
bca0324d CM |
2909 | list_del_rcu(&intf->link); |
2910 | mutex_unlock(&ipmi_interfaces_mutex); | |
b2c03941 | 2911 | mutex_unlock(&smi_watchers_mutex); |
bca0324d | 2912 | synchronize_rcu(); |
393d2cc3 | 2913 | kref_put(&intf->refcount, intf_free); |
393d2cc3 | 2914 | } else { |
78ba2faf CM |
2915 | /* |
2916 | * Keep memory order straight for RCU readers. Make | |
2917 | * sure everything else is committed to memory before | |
2918 | * setting intf_num to mark the interface valid. | |
2919 | */ | |
2920 | smp_wmb(); | |
bca0324d CM |
2921 | intf->intf_num = i; |
2922 | mutex_unlock(&ipmi_interfaces_mutex); | |
78ba2faf | 2923 | /* After this point the interface is legal to use. */ |
50c812b2 | 2924 | call_smi_watchers(i, intf->si_dev); |
b2c03941 | 2925 | mutex_unlock(&smi_watchers_mutex); |
1da177e4 LT |
2926 | } |
2927 | ||
2928 | return rv; | |
2929 | } | |
c70d7499 | 2930 | EXPORT_SYMBOL(ipmi_register_smi); |
1da177e4 | 2931 | |
b2c03941 CM |
2932 | static void cleanup_smi_msgs(ipmi_smi_t intf) |
2933 | { | |
2934 | int i; | |
2935 | struct seq_table *ent; | |
2936 | ||
2937 | /* No need for locks, the interface is down. */ | |
2938 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { | |
2939 | ent = &(intf->seq_table[i]); | |
2940 | if (!ent->inuse) | |
2941 | continue; | |
2942 | deliver_err_response(ent->recv_msg, IPMI_ERR_UNSPECIFIED); | |
2943 | } | |
2944 | } | |
2945 | ||
1da177e4 LT |
2946 | int ipmi_unregister_smi(ipmi_smi_t intf) |
2947 | { | |
1da177e4 | 2948 | struct ipmi_smi_watcher *w; |
b2c03941 | 2949 | int intf_num = intf->intf_num; |
1da177e4 | 2950 | |
50c812b2 CM |
2951 | ipmi_bmc_unregister(intf); |
2952 | ||
b2c03941 | 2953 | mutex_lock(&smi_watchers_mutex); |
bca0324d | 2954 | mutex_lock(&ipmi_interfaces_mutex); |
b2c03941 CM |
2955 | intf->intf_num = -1; |
2956 | intf->handlers = NULL; | |
bca0324d CM |
2957 | list_del_rcu(&intf->link); |
2958 | mutex_unlock(&ipmi_interfaces_mutex); | |
2959 | synchronize_rcu(); | |
1da177e4 | 2960 | |
b2c03941 CM |
2961 | cleanup_smi_msgs(intf); |
2962 | ||
393d2cc3 | 2963 | remove_proc_entries(intf); |
1da177e4 | 2964 | |
c70d7499 CM |
2965 | /* |
2966 | * Call all the watcher interfaces to tell them that | |
2967 | * an interface is gone. | |
2968 | */ | |
393d2cc3 | 2969 | list_for_each_entry(w, &smi_watchers, link) |
b2c03941 CM |
2970 | w->smi_gone(intf_num); |
2971 | mutex_unlock(&smi_watchers_mutex); | |
393d2cc3 | 2972 | |
393d2cc3 | 2973 | kref_put(&intf->refcount, intf_free); |
1da177e4 LT |
2974 | return 0; |
2975 | } | |
c70d7499 | 2976 | EXPORT_SYMBOL(ipmi_unregister_smi); |
1da177e4 LT |
2977 | |
2978 | static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf, | |
2979 | struct ipmi_smi_msg *msg) | |
2980 | { | |
2981 | struct ipmi_ipmb_addr ipmb_addr; | |
2982 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 | 2983 | |
c70d7499 CM |
2984 | /* |
2985 | * This is 11, not 10, because the response must contain a | |
2986 | * completion code. | |
2987 | */ | |
1da177e4 LT |
2988 | if (msg->rsp_size < 11) { |
2989 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 2990 | ipmi_inc_stat(intf, invalid_ipmb_responses); |
1da177e4 LT |
2991 | return 0; |
2992 | } | |
2993 | ||
2994 | if (msg->rsp[2] != 0) { | |
2995 | /* An error getting the response, just ignore it. */ | |
2996 | return 0; | |
2997 | } | |
2998 | ||
2999 | ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; | |
3000 | ipmb_addr.slave_addr = msg->rsp[6]; | |
3001 | ipmb_addr.channel = msg->rsp[3] & 0x0f; | |
3002 | ipmb_addr.lun = msg->rsp[7] & 3; | |
3003 | ||
c70d7499 CM |
3004 | /* |
3005 | * It's a response from a remote entity. Look up the sequence | |
3006 | * number and handle the response. | |
3007 | */ | |
1da177e4 LT |
3008 | if (intf_find_seq(intf, |
3009 | msg->rsp[7] >> 2, | |
3010 | msg->rsp[3] & 0x0f, | |
3011 | msg->rsp[8], | |
3012 | (msg->rsp[4] >> 2) & (~1), | |
3013 | (struct ipmi_addr *) &(ipmb_addr), | |
c70d7499 CM |
3014 | &recv_msg)) { |
3015 | /* | |
3016 | * We were unable to find the sequence number, | |
3017 | * so just nuke the message. | |
3018 | */ | |
b2655f26 | 3019 | ipmi_inc_stat(intf, unhandled_ipmb_responses); |
1da177e4 LT |
3020 | return 0; |
3021 | } | |
3022 | ||
3023 | memcpy(recv_msg->msg_data, | |
3024 | &(msg->rsp[9]), | |
3025 | msg->rsp_size - 9); | |
c70d7499 CM |
3026 | /* |
3027 | * The other fields matched, so no need to set them, except | |
3028 | * for netfn, which needs to be the response that was | |
3029 | * returned, not the request value. | |
3030 | */ | |
1da177e4 LT |
3031 | recv_msg->msg.netfn = msg->rsp[4] >> 2; |
3032 | recv_msg->msg.data = recv_msg->msg_data; | |
3033 | recv_msg->msg.data_len = msg->rsp_size - 10; | |
3034 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
b2655f26 | 3035 | ipmi_inc_stat(intf, handled_ipmb_responses); |
1da177e4 LT |
3036 | deliver_response(recv_msg); |
3037 | ||
3038 | return 0; | |
3039 | } | |
3040 | ||
3041 | static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, | |
3042 | struct ipmi_smi_msg *msg) | |
3043 | { | |
393d2cc3 CM |
3044 | struct cmd_rcvr *rcvr; |
3045 | int rv = 0; | |
3046 | unsigned char netfn; | |
3047 | unsigned char cmd; | |
c69c3127 | 3048 | unsigned char chan; |
393d2cc3 CM |
3049 | ipmi_user_t user = NULL; |
3050 | struct ipmi_ipmb_addr *ipmb_addr; | |
3051 | struct ipmi_recv_msg *recv_msg; | |
b2c03941 | 3052 | struct ipmi_smi_handlers *handlers; |
1da177e4 LT |
3053 | |
3054 | if (msg->rsp_size < 10) { | |
3055 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3056 | ipmi_inc_stat(intf, invalid_commands); |
1da177e4 LT |
3057 | return 0; |
3058 | } | |
3059 | ||
3060 | if (msg->rsp[2] != 0) { | |
3061 | /* An error getting the response, just ignore it. */ | |
3062 | return 0; | |
3063 | } | |
3064 | ||
3065 | netfn = msg->rsp[4] >> 2; | |
3066 | cmd = msg->rsp[8]; | |
c69c3127 | 3067 | chan = msg->rsp[3] & 0xf; |
1da177e4 | 3068 | |
e61fb5b6 | 3069 | rcu_read_lock(); |
c69c3127 | 3070 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
393d2cc3 CM |
3071 | if (rcvr) { |
3072 | user = rcvr->user; | |
3073 | kref_get(&user->refcount); | |
3074 | } else | |
3075 | user = NULL; | |
e61fb5b6 | 3076 | rcu_read_unlock(); |
1da177e4 LT |
3077 | |
3078 | if (user == NULL) { | |
3079 | /* We didn't find a user, deliver an error response. */ | |
b2655f26 | 3080 | ipmi_inc_stat(intf, unhandled_commands); |
1da177e4 LT |
3081 | |
3082 | msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
3083 | msg->data[1] = IPMI_SEND_MSG_CMD; | |
3084 | msg->data[2] = msg->rsp[3]; | |
3085 | msg->data[3] = msg->rsp[6]; | |
c70d7499 | 3086 | msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); |
1da177e4 | 3087 | msg->data[5] = ipmb_checksum(&(msg->data[3]), 2); |
c14979b9 | 3088 | msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address; |
c70d7499 CM |
3089 | /* rqseq/lun */ |
3090 | msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); | |
1da177e4 LT |
3091 | msg->data[8] = msg->rsp[8]; /* cmd */ |
3092 | msg->data[9] = IPMI_INVALID_CMD_COMPLETION_CODE; | |
3093 | msg->data[10] = ipmb_checksum(&(msg->data[6]), 4); | |
3094 | msg->data_size = 11; | |
3095 | ||
3096 | #ifdef DEBUG_MSGING | |
3097 | { | |
3098 | int m; | |
3099 | printk("Invalid command:"); | |
e8b33617 | 3100 | for (m = 0; m < msg->data_size; m++) |
1da177e4 LT |
3101 | printk(" %2.2x", msg->data[m]); |
3102 | printk("\n"); | |
3103 | } | |
3104 | #endif | |
b2c03941 CM |
3105 | rcu_read_lock(); |
3106 | handlers = intf->handlers; | |
3107 | if (handlers) { | |
3108 | handlers->sender(intf->send_info, msg, 0); | |
c70d7499 CM |
3109 | /* |
3110 | * We used the message, so return the value | |
3111 | * that causes it to not be freed or | |
3112 | * queued. | |
3113 | */ | |
b2c03941 CM |
3114 | rv = -1; |
3115 | } | |
3116 | rcu_read_unlock(); | |
1da177e4 LT |
3117 | } else { |
3118 | /* Deliver the message to the user. */ | |
b2655f26 | 3119 | ipmi_inc_stat(intf, handled_commands); |
1da177e4 LT |
3120 | |
3121 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3122 | if (!recv_msg) { |
c70d7499 CM |
3123 | /* |
3124 | * We couldn't allocate memory for the | |
3125 | * message, so requeue it for handling | |
3126 | * later. | |
3127 | */ | |
1da177e4 | 3128 | rv = 1; |
393d2cc3 | 3129 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
3130 | } else { |
3131 | /* Extract the source address from the data. */ | |
3132 | ipmb_addr = (struct ipmi_ipmb_addr *) &recv_msg->addr; | |
3133 | ipmb_addr->addr_type = IPMI_IPMB_ADDR_TYPE; | |
3134 | ipmb_addr->slave_addr = msg->rsp[6]; | |
3135 | ipmb_addr->lun = msg->rsp[7] & 3; | |
3136 | ipmb_addr->channel = msg->rsp[3] & 0xf; | |
3137 | ||
c70d7499 CM |
3138 | /* |
3139 | * Extract the rest of the message information | |
3140 | * from the IPMB header. | |
3141 | */ | |
1da177e4 LT |
3142 | recv_msg->user = user; |
3143 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
3144 | recv_msg->msgid = msg->rsp[7] >> 2; | |
3145 | recv_msg->msg.netfn = msg->rsp[4] >> 2; | |
3146 | recv_msg->msg.cmd = msg->rsp[8]; | |
3147 | recv_msg->msg.data = recv_msg->msg_data; | |
3148 | ||
c70d7499 CM |
3149 | /* |
3150 | * We chop off 10, not 9 bytes because the checksum | |
3151 | * at the end also needs to be removed. | |
3152 | */ | |
1da177e4 LT |
3153 | recv_msg->msg.data_len = msg->rsp_size - 10; |
3154 | memcpy(recv_msg->msg_data, | |
3155 | &(msg->rsp[9]), | |
3156 | msg->rsp_size - 10); | |
3157 | deliver_response(recv_msg); | |
3158 | } | |
3159 | } | |
3160 | ||
3161 | return rv; | |
3162 | } | |
3163 | ||
3164 | static int handle_lan_get_msg_rsp(ipmi_smi_t intf, | |
3165 | struct ipmi_smi_msg *msg) | |
3166 | { | |
3167 | struct ipmi_lan_addr lan_addr; | |
3168 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 LT |
3169 | |
3170 | ||
c70d7499 CM |
3171 | /* |
3172 | * This is 13, not 12, because the response must contain a | |
3173 | * completion code. | |
3174 | */ | |
1da177e4 LT |
3175 | if (msg->rsp_size < 13) { |
3176 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3177 | ipmi_inc_stat(intf, invalid_lan_responses); |
1da177e4 LT |
3178 | return 0; |
3179 | } | |
3180 | ||
3181 | if (msg->rsp[2] != 0) { | |
3182 | /* An error getting the response, just ignore it. */ | |
3183 | return 0; | |
3184 | } | |
3185 | ||
3186 | lan_addr.addr_type = IPMI_LAN_ADDR_TYPE; | |
3187 | lan_addr.session_handle = msg->rsp[4]; | |
3188 | lan_addr.remote_SWID = msg->rsp[8]; | |
3189 | lan_addr.local_SWID = msg->rsp[5]; | |
3190 | lan_addr.channel = msg->rsp[3] & 0x0f; | |
3191 | lan_addr.privilege = msg->rsp[3] >> 4; | |
3192 | lan_addr.lun = msg->rsp[9] & 3; | |
3193 | ||
c70d7499 CM |
3194 | /* |
3195 | * It's a response from a remote entity. Look up the sequence | |
3196 | * number and handle the response. | |
3197 | */ | |
1da177e4 LT |
3198 | if (intf_find_seq(intf, |
3199 | msg->rsp[9] >> 2, | |
3200 | msg->rsp[3] & 0x0f, | |
3201 | msg->rsp[10], | |
3202 | (msg->rsp[6] >> 2) & (~1), | |
3203 | (struct ipmi_addr *) &(lan_addr), | |
c70d7499 CM |
3204 | &recv_msg)) { |
3205 | /* | |
3206 | * We were unable to find the sequence number, | |
3207 | * so just nuke the message. | |
3208 | */ | |
b2655f26 | 3209 | ipmi_inc_stat(intf, unhandled_lan_responses); |
1da177e4 LT |
3210 | return 0; |
3211 | } | |
3212 | ||
3213 | memcpy(recv_msg->msg_data, | |
3214 | &(msg->rsp[11]), | |
3215 | msg->rsp_size - 11); | |
c70d7499 CM |
3216 | /* |
3217 | * The other fields matched, so no need to set them, except | |
3218 | * for netfn, which needs to be the response that was | |
3219 | * returned, not the request value. | |
3220 | */ | |
1da177e4 LT |
3221 | recv_msg->msg.netfn = msg->rsp[6] >> 2; |
3222 | recv_msg->msg.data = recv_msg->msg_data; | |
3223 | recv_msg->msg.data_len = msg->rsp_size - 12; | |
3224 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; | |
b2655f26 | 3225 | ipmi_inc_stat(intf, handled_lan_responses); |
1da177e4 LT |
3226 | deliver_response(recv_msg); |
3227 | ||
3228 | return 0; | |
3229 | } | |
3230 | ||
3231 | static int handle_lan_get_msg_cmd(ipmi_smi_t intf, | |
3232 | struct ipmi_smi_msg *msg) | |
3233 | { | |
393d2cc3 CM |
3234 | struct cmd_rcvr *rcvr; |
3235 | int rv = 0; | |
3236 | unsigned char netfn; | |
3237 | unsigned char cmd; | |
c69c3127 | 3238 | unsigned char chan; |
393d2cc3 CM |
3239 | ipmi_user_t user = NULL; |
3240 | struct ipmi_lan_addr *lan_addr; | |
3241 | struct ipmi_recv_msg *recv_msg; | |
1da177e4 LT |
3242 | |
3243 | if (msg->rsp_size < 12) { | |
3244 | /* Message not big enough, just ignore it. */ | |
b2655f26 | 3245 | ipmi_inc_stat(intf, invalid_commands); |
1da177e4 LT |
3246 | return 0; |
3247 | } | |
3248 | ||
3249 | if (msg->rsp[2] != 0) { | |
3250 | /* An error getting the response, just ignore it. */ | |
3251 | return 0; | |
3252 | } | |
3253 | ||
3254 | netfn = msg->rsp[6] >> 2; | |
3255 | cmd = msg->rsp[10]; | |
c69c3127 | 3256 | chan = msg->rsp[3] & 0xf; |
1da177e4 | 3257 | |
e61fb5b6 | 3258 | rcu_read_lock(); |
c69c3127 | 3259 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
393d2cc3 CM |
3260 | if (rcvr) { |
3261 | user = rcvr->user; | |
3262 | kref_get(&user->refcount); | |
3263 | } else | |
3264 | user = NULL; | |
e61fb5b6 | 3265 | rcu_read_unlock(); |
1da177e4 LT |
3266 | |
3267 | if (user == NULL) { | |
393d2cc3 | 3268 | /* We didn't find a user, just give up. */ |
b2655f26 | 3269 | ipmi_inc_stat(intf, unhandled_commands); |
1da177e4 | 3270 | |
c70d7499 CM |
3271 | /* |
3272 | * Don't do anything with these messages, just allow | |
3273 | * them to be freed. | |
3274 | */ | |
3275 | rv = 0; | |
1da177e4 LT |
3276 | } else { |
3277 | /* Deliver the message to the user. */ | |
b2655f26 | 3278 | ipmi_inc_stat(intf, handled_commands); |
1da177e4 LT |
3279 | |
3280 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3281 | if (!recv_msg) { |
c70d7499 CM |
3282 | /* |
3283 | * We couldn't allocate memory for the | |
3284 | * message, so requeue it for handling later. | |
3285 | */ | |
1da177e4 | 3286 | rv = 1; |
393d2cc3 | 3287 | kref_put(&user->refcount, free_user); |
1da177e4 LT |
3288 | } else { |
3289 | /* Extract the source address from the data. */ | |
3290 | lan_addr = (struct ipmi_lan_addr *) &recv_msg->addr; | |
3291 | lan_addr->addr_type = IPMI_LAN_ADDR_TYPE; | |
3292 | lan_addr->session_handle = msg->rsp[4]; | |
3293 | lan_addr->remote_SWID = msg->rsp[8]; | |
3294 | lan_addr->local_SWID = msg->rsp[5]; | |
3295 | lan_addr->lun = msg->rsp[9] & 3; | |
3296 | lan_addr->channel = msg->rsp[3] & 0xf; | |
3297 | lan_addr->privilege = msg->rsp[3] >> 4; | |
3298 | ||
c70d7499 CM |
3299 | /* |
3300 | * Extract the rest of the message information | |
3301 | * from the IPMB header. | |
3302 | */ | |
1da177e4 LT |
3303 | recv_msg->user = user; |
3304 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; | |
3305 | recv_msg->msgid = msg->rsp[9] >> 2; | |
3306 | recv_msg->msg.netfn = msg->rsp[6] >> 2; | |
3307 | recv_msg->msg.cmd = msg->rsp[10]; | |
3308 | recv_msg->msg.data = recv_msg->msg_data; | |
3309 | ||
c70d7499 CM |
3310 | /* |
3311 | * We chop off 12, not 11 bytes because the checksum | |
3312 | * at the end also needs to be removed. | |
3313 | */ | |
1da177e4 LT |
3314 | recv_msg->msg.data_len = msg->rsp_size - 12; |
3315 | memcpy(recv_msg->msg_data, | |
3316 | &(msg->rsp[11]), | |
3317 | msg->rsp_size - 12); | |
3318 | deliver_response(recv_msg); | |
3319 | } | |
3320 | } | |
3321 | ||
3322 | return rv; | |
3323 | } | |
3324 | ||
4dec302f | 3325 | /* |
3326 | * This routine will handle "Get Message" command responses with | |
3327 | * channels that use an OEM Medium. The message format belongs to | |
3328 | * the OEM. See IPMI 2.0 specification, Chapter 6 and | |
3329 | * Chapter 22, sections 22.6 and 22.24 for more details. | |
3330 | */ | |
3331 | static int handle_oem_get_msg_cmd(ipmi_smi_t intf, | |
3332 | struct ipmi_smi_msg *msg) | |
3333 | { | |
3334 | struct cmd_rcvr *rcvr; | |
3335 | int rv = 0; | |
3336 | unsigned char netfn; | |
3337 | unsigned char cmd; | |
3338 | unsigned char chan; | |
3339 | ipmi_user_t user = NULL; | |
3340 | struct ipmi_system_interface_addr *smi_addr; | |
3341 | struct ipmi_recv_msg *recv_msg; | |
3342 | ||
3343 | /* | |
3344 | * We expect the OEM SW to perform error checking | |
3345 | * so we just do some basic sanity checks | |
3346 | */ | |
3347 | if (msg->rsp_size < 4) { | |
3348 | /* Message not big enough, just ignore it. */ | |
3349 | ipmi_inc_stat(intf, invalid_commands); | |
3350 | return 0; | |
3351 | } | |
3352 | ||
3353 | if (msg->rsp[2] != 0) { | |
3354 | /* An error getting the response, just ignore it. */ | |
3355 | return 0; | |
3356 | } | |
3357 | ||
3358 | /* | |
3359 | * This is an OEM Message so the OEM needs to know how | |
3360 | * handle the message. We do no interpretation. | |
3361 | */ | |
3362 | netfn = msg->rsp[0] >> 2; | |
3363 | cmd = msg->rsp[1]; | |
3364 | chan = msg->rsp[3] & 0xf; | |
3365 | ||
3366 | rcu_read_lock(); | |
3367 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); | |
3368 | if (rcvr) { | |
3369 | user = rcvr->user; | |
3370 | kref_get(&user->refcount); | |
3371 | } else | |
3372 | user = NULL; | |
3373 | rcu_read_unlock(); | |
3374 | ||
3375 | if (user == NULL) { | |
3376 | /* We didn't find a user, just give up. */ | |
3377 | ipmi_inc_stat(intf, unhandled_commands); | |
3378 | ||
3379 | /* | |
3380 | * Don't do anything with these messages, just allow | |
3381 | * them to be freed. | |
3382 | */ | |
3383 | ||
3384 | rv = 0; | |
3385 | } else { | |
3386 | /* Deliver the message to the user. */ | |
3387 | ipmi_inc_stat(intf, handled_commands); | |
3388 | ||
3389 | recv_msg = ipmi_alloc_recv_msg(); | |
3390 | if (!recv_msg) { | |
3391 | /* | |
3392 | * We couldn't allocate memory for the | |
3393 | * message, so requeue it for handling | |
3394 | * later. | |
3395 | */ | |
3396 | rv = 1; | |
3397 | kref_put(&user->refcount, free_user); | |
3398 | } else { | |
3399 | /* | |
3400 | * OEM Messages are expected to be delivered via | |
3401 | * the system interface to SMS software. We might | |
3402 | * need to visit this again depending on OEM | |
3403 | * requirements | |
3404 | */ | |
3405 | smi_addr = ((struct ipmi_system_interface_addr *) | |
3406 | &(recv_msg->addr)); | |
3407 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3408 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3409 | smi_addr->lun = msg->rsp[0] & 3; | |
3410 | ||
3411 | recv_msg->user = user; | |
3412 | recv_msg->user_msg_data = NULL; | |
3413 | recv_msg->recv_type = IPMI_OEM_RECV_TYPE; | |
3414 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3415 | recv_msg->msg.cmd = msg->rsp[1]; | |
3416 | recv_msg->msg.data = recv_msg->msg_data; | |
3417 | ||
3418 | /* | |
3419 | * The message starts at byte 4 which follows the | |
3420 | * the Channel Byte in the "GET MESSAGE" command | |
3421 | */ | |
3422 | recv_msg->msg.data_len = msg->rsp_size - 4; | |
3423 | memcpy(recv_msg->msg_data, | |
3424 | &(msg->rsp[4]), | |
3425 | msg->rsp_size - 4); | |
3426 | deliver_response(recv_msg); | |
3427 | } | |
3428 | } | |
3429 | ||
3430 | return rv; | |
3431 | } | |
3432 | ||
1da177e4 LT |
3433 | static void copy_event_into_recv_msg(struct ipmi_recv_msg *recv_msg, |
3434 | struct ipmi_smi_msg *msg) | |
3435 | { | |
3436 | struct ipmi_system_interface_addr *smi_addr; | |
c70d7499 | 3437 | |
1da177e4 LT |
3438 | recv_msg->msgid = 0; |
3439 | smi_addr = (struct ipmi_system_interface_addr *) &(recv_msg->addr); | |
3440 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3441 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3442 | smi_addr->lun = msg->rsp[0] & 3; | |
3443 | recv_msg->recv_type = IPMI_ASYNC_EVENT_RECV_TYPE; | |
3444 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3445 | recv_msg->msg.cmd = msg->rsp[1]; | |
3446 | memcpy(recv_msg->msg_data, &(msg->rsp[3]), msg->rsp_size - 3); | |
3447 | recv_msg->msg.data = recv_msg->msg_data; | |
3448 | recv_msg->msg.data_len = msg->rsp_size - 3; | |
3449 | } | |
3450 | ||
1da177e4 LT |
3451 | static int handle_read_event_rsp(ipmi_smi_t intf, |
3452 | struct ipmi_smi_msg *msg) | |
3453 | { | |
3454 | struct ipmi_recv_msg *recv_msg, *recv_msg2; | |
3455 | struct list_head msgs; | |
3456 | ipmi_user_t user; | |
3457 | int rv = 0; | |
3458 | int deliver_count = 0; | |
3459 | unsigned long flags; | |
3460 | ||
3461 | if (msg->rsp_size < 19) { | |
3462 | /* Message is too small to be an IPMB event. */ | |
b2655f26 | 3463 | ipmi_inc_stat(intf, invalid_events); |
1da177e4 LT |
3464 | return 0; |
3465 | } | |
3466 | ||
3467 | if (msg->rsp[2] != 0) { | |
3468 | /* An error getting the event, just ignore it. */ | |
3469 | return 0; | |
3470 | } | |
3471 | ||
3472 | INIT_LIST_HEAD(&msgs); | |
3473 | ||
393d2cc3 | 3474 | spin_lock_irqsave(&intf->events_lock, flags); |
1da177e4 | 3475 | |
b2655f26 | 3476 | ipmi_inc_stat(intf, events); |
1da177e4 | 3477 | |
c70d7499 CM |
3478 | /* |
3479 | * Allocate and fill in one message for every user that is | |
3480 | * getting events. | |
3481 | */ | |
393d2cc3 CM |
3482 | rcu_read_lock(); |
3483 | list_for_each_entry_rcu(user, &intf->users, link) { | |
8a3628d5 | 3484 | if (!user->gets_events) |
1da177e4 LT |
3485 | continue; |
3486 | ||
3487 | recv_msg = ipmi_alloc_recv_msg(); | |
8a3628d5 | 3488 | if (!recv_msg) { |
393d2cc3 | 3489 | rcu_read_unlock(); |
8a3628d5 CM |
3490 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, |
3491 | link) { | |
1da177e4 LT |
3492 | list_del(&recv_msg->link); |
3493 | ipmi_free_recv_msg(recv_msg); | |
3494 | } | |
c70d7499 CM |
3495 | /* |
3496 | * We couldn't allocate memory for the | |
3497 | * message, so requeue it for handling | |
3498 | * later. | |
3499 | */ | |
1da177e4 LT |
3500 | rv = 1; |
3501 | goto out; | |
3502 | } | |
3503 | ||
3504 | deliver_count++; | |
3505 | ||
3506 | copy_event_into_recv_msg(recv_msg, msg); | |
3507 | recv_msg->user = user; | |
393d2cc3 | 3508 | kref_get(&user->refcount); |
1da177e4 LT |
3509 | list_add_tail(&(recv_msg->link), &msgs); |
3510 | } | |
393d2cc3 | 3511 | rcu_read_unlock(); |
1da177e4 LT |
3512 | |
3513 | if (deliver_count) { | |
3514 | /* Now deliver all the messages. */ | |
3515 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, link) { | |
3516 | list_del(&recv_msg->link); | |
3517 | deliver_response(recv_msg); | |
3518 | } | |
3519 | } else if (intf->waiting_events_count < MAX_EVENTS_IN_QUEUE) { | |
c70d7499 CM |
3520 | /* |
3521 | * No one to receive the message, put it in queue if there's | |
3522 | * not already too many things in the queue. | |
3523 | */ | |
1da177e4 | 3524 | recv_msg = ipmi_alloc_recv_msg(); |
8a3628d5 | 3525 | if (!recv_msg) { |
c70d7499 CM |
3526 | /* |
3527 | * We couldn't allocate memory for the | |
3528 | * message, so requeue it for handling | |
3529 | * later. | |
3530 | */ | |
1da177e4 LT |
3531 | rv = 1; |
3532 | goto out; | |
3533 | } | |
3534 | ||
3535 | copy_event_into_recv_msg(recv_msg, msg); | |
3536 | list_add_tail(&(recv_msg->link), &(intf->waiting_events)); | |
4791c03d | 3537 | intf->waiting_events_count++; |
87ebd06f | 3538 | } else if (!intf->event_msg_printed) { |
c70d7499 CM |
3539 | /* |
3540 | * There's too many things in the queue, discard this | |
3541 | * message. | |
3542 | */ | |
87ebd06f CM |
3543 | printk(KERN_WARNING PFX "Event queue full, discarding" |
3544 | " incoming events\n"); | |
3545 | intf->event_msg_printed = 1; | |
1da177e4 LT |
3546 | } |
3547 | ||
3548 | out: | |
3549 | spin_unlock_irqrestore(&(intf->events_lock), flags); | |
3550 | ||
3551 | return rv; | |
3552 | } | |
3553 | ||
3554 | static int handle_bmc_rsp(ipmi_smi_t intf, | |
3555 | struct ipmi_smi_msg *msg) | |
3556 | { | |
3557 | struct ipmi_recv_msg *recv_msg; | |
393d2cc3 | 3558 | struct ipmi_user *user; |
1da177e4 LT |
3559 | |
3560 | recv_msg = (struct ipmi_recv_msg *) msg->user_data; | |
c70d7499 CM |
3561 | if (recv_msg == NULL) { |
3562 | printk(KERN_WARNING | |
3563 | "IPMI message received with no owner. This\n" | |
3564 | "could be because of a malformed message, or\n" | |
3565 | "because of a hardware error. Contact your\n" | |
3566 | "hardware vender for assistance\n"); | |
56a55ec6 CM |
3567 | return 0; |
3568 | } | |
1da177e4 | 3569 | |
393d2cc3 | 3570 | user = recv_msg->user; |
1da177e4 | 3571 | /* Make sure the user still exists. */ |
393d2cc3 | 3572 | if (user && !user->valid) { |
56a55ec6 | 3573 | /* The user for the message went away, so give up. */ |
b2655f26 | 3574 | ipmi_inc_stat(intf, unhandled_local_responses); |
1da177e4 LT |
3575 | ipmi_free_recv_msg(recv_msg); |
3576 | } else { | |
3577 | struct ipmi_system_interface_addr *smi_addr; | |
3578 | ||
b2655f26 | 3579 | ipmi_inc_stat(intf, handled_local_responses); |
1da177e4 LT |
3580 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
3581 | recv_msg->msgid = msg->msgid; | |
3582 | smi_addr = ((struct ipmi_system_interface_addr *) | |
3583 | &(recv_msg->addr)); | |
3584 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
3585 | smi_addr->channel = IPMI_BMC_CHANNEL; | |
3586 | smi_addr->lun = msg->rsp[0] & 3; | |
3587 | recv_msg->msg.netfn = msg->rsp[0] >> 2; | |
3588 | recv_msg->msg.cmd = msg->rsp[1]; | |
3589 | memcpy(recv_msg->msg_data, | |
3590 | &(msg->rsp[2]), | |
3591 | msg->rsp_size - 2); | |
3592 | recv_msg->msg.data = recv_msg->msg_data; | |
3593 | recv_msg->msg.data_len = msg->rsp_size - 2; | |
3594 | deliver_response(recv_msg); | |
3595 | } | |
3596 | ||
3597 | return 0; | |
3598 | } | |
3599 | ||
c70d7499 CM |
3600 | /* |
3601 | * Handle a new message. Return 1 if the message should be requeued, | |
3602 | * 0 if the message should be freed, or -1 if the message should not | |
3603 | * be freed or requeued. | |
3604 | */ | |
1da177e4 LT |
3605 | static int handle_new_recv_msg(ipmi_smi_t intf, |
3606 | struct ipmi_smi_msg *msg) | |
3607 | { | |
3608 | int requeue; | |
3609 | int chan; | |
3610 | ||
3611 | #ifdef DEBUG_MSGING | |
3612 | int m; | |
3613 | printk("Recv:"); | |
e8b33617 | 3614 | for (m = 0; m < msg->rsp_size; m++) |
1da177e4 LT |
3615 | printk(" %2.2x", msg->rsp[m]); |
3616 | printk("\n"); | |
3617 | #endif | |
3618 | if (msg->rsp_size < 2) { | |
3619 | /* Message is too small to be correct. */ | |
3620 | printk(KERN_WARNING PFX "BMC returned to small a message" | |
3621 | " for netfn %x cmd %x, got %d bytes\n", | |
3622 | (msg->data[0] >> 2) | 1, msg->data[1], msg->rsp_size); | |
3623 | ||
3624 | /* Generate an error response for the message. */ | |
3625 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3626 | msg->rsp[1] = msg->data[1]; | |
3627 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3628 | msg->rsp_size = 3; | |
c70d7499 CM |
3629 | } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1)) |
3630 | || (msg->rsp[1] != msg->data[1])) { | |
3631 | /* | |
3632 | * The NetFN and Command in the response is not even | |
3633 | * marginally correct. | |
3634 | */ | |
1da177e4 LT |
3635 | printk(KERN_WARNING PFX "BMC returned incorrect response," |
3636 | " expected netfn %x cmd %x, got netfn %x cmd %x\n", | |
3637 | (msg->data[0] >> 2) | 1, msg->data[1], | |
3638 | msg->rsp[0] >> 2, msg->rsp[1]); | |
3639 | ||
3640 | /* Generate an error response for the message. */ | |
3641 | msg->rsp[0] = msg->data[0] | (1 << 2); | |
3642 | msg->rsp[1] = msg->data[1]; | |
3643 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
3644 | msg->rsp_size = 3; | |
3645 | } | |
3646 | ||
3647 | if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
3648 | && (msg->rsp[1] == IPMI_SEND_MSG_CMD) | |
c70d7499 CM |
3649 | && (msg->user_data != NULL)) { |
3650 | /* | |
3651 | * It's a response to a response we sent. For this we | |
3652 | * deliver a send message response to the user. | |
3653 | */ | |
393d2cc3 | 3654 | struct ipmi_recv_msg *recv_msg = msg->user_data; |
1da177e4 LT |
3655 | |
3656 | requeue = 0; | |
3657 | if (msg->rsp_size < 2) | |
3658 | /* Message is too small to be correct. */ | |
3659 | goto out; | |
3660 | ||
3661 | chan = msg->data[2] & 0x0f; | |
3662 | if (chan >= IPMI_MAX_CHANNELS) | |
3663 | /* Invalid channel number */ | |
3664 | goto out; | |
3665 | ||
393d2cc3 CM |
3666 | if (!recv_msg) |
3667 | goto out; | |
3668 | ||
3669 | /* Make sure the user still exists. */ | |
3670 | if (!recv_msg->user || !recv_msg->user->valid) | |
3671 | goto out; | |
3672 | ||
3673 | recv_msg->recv_type = IPMI_RESPONSE_RESPONSE_TYPE; | |
3674 | recv_msg->msg.data = recv_msg->msg_data; | |
3675 | recv_msg->msg.data_len = 1; | |
3676 | recv_msg->msg_data[0] = msg->rsp[2]; | |
3677 | deliver_response(recv_msg); | |
1da177e4 | 3678 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
c70d7499 | 3679 | && (msg->rsp[1] == IPMI_GET_MSG_CMD)) { |
1da177e4 LT |
3680 | /* It's from the receive queue. */ |
3681 | chan = msg->rsp[3] & 0xf; | |
3682 | if (chan >= IPMI_MAX_CHANNELS) { | |
3683 | /* Invalid channel number */ | |
3684 | requeue = 0; | |
3685 | goto out; | |
3686 | } | |
3687 | ||
4dec302f | 3688 | /* |
9a2845c4 CM |
3689 | * We need to make sure the channels have been initialized. |
3690 | * The channel_handler routine will set the "curr_channel" | |
3691 | * equal to or greater than IPMI_MAX_CHANNELS when all the | |
3692 | * channels for this interface have been initialized. | |
3693 | */ | |
4dec302f | 3694 | if (intf->curr_channel < IPMI_MAX_CHANNELS) { |
9a2845c4 | 3695 | requeue = 0; /* Throw the message away */ |
4dec302f | 3696 | goto out; |
3697 | } | |
3698 | ||
1da177e4 LT |
3699 | switch (intf->channels[chan].medium) { |
3700 | case IPMI_CHANNEL_MEDIUM_IPMB: | |
3701 | if (msg->rsp[4] & 0x04) { | |
c70d7499 CM |
3702 | /* |
3703 | * It's a response, so find the | |
3704 | * requesting message and send it up. | |
3705 | */ | |
1da177e4 LT |
3706 | requeue = handle_ipmb_get_msg_rsp(intf, msg); |
3707 | } else { | |
c70d7499 CM |
3708 | /* |
3709 | * It's a command to the SMS from some other | |
3710 | * entity. Handle that. | |
3711 | */ | |
1da177e4 LT |
3712 | requeue = handle_ipmb_get_msg_cmd(intf, msg); |
3713 | } | |
3714 | break; | |
3715 | ||
3716 | case IPMI_CHANNEL_MEDIUM_8023LAN: | |
3717 | case IPMI_CHANNEL_MEDIUM_ASYNC: | |
3718 | if (msg->rsp[6] & 0x04) { | |
c70d7499 CM |
3719 | /* |
3720 | * It's a response, so find the | |
3721 | * requesting message and send it up. | |
3722 | */ | |
1da177e4 LT |
3723 | requeue = handle_lan_get_msg_rsp(intf, msg); |
3724 | } else { | |
c70d7499 CM |
3725 | /* |
3726 | * It's a command to the SMS from some other | |
3727 | * entity. Handle that. | |
3728 | */ | |
1da177e4 LT |
3729 | requeue = handle_lan_get_msg_cmd(intf, msg); |
3730 | } | |
3731 | break; | |
3732 | ||
3733 | default: | |
4dec302f | 3734 | /* Check for OEM Channels. Clients had better |
3735 | register for these commands. */ | |
3736 | if ((intf->channels[chan].medium | |
3737 | >= IPMI_CHANNEL_MEDIUM_OEM_MIN) | |
3738 | && (intf->channels[chan].medium | |
3739 | <= IPMI_CHANNEL_MEDIUM_OEM_MAX)) { | |
3740 | requeue = handle_oem_get_msg_cmd(intf, msg); | |
3741 | } else { | |
3742 | /* | |
3743 | * We don't handle the channel type, so just | |
3744 | * free the message. | |
3745 | */ | |
3746 | requeue = 0; | |
3747 | } | |
1da177e4 LT |
3748 | } |
3749 | ||
3750 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) | |
c70d7499 | 3751 | && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD)) { |
1da177e4 LT |
3752 | /* It's an asyncronous event. */ |
3753 | requeue = handle_read_event_rsp(intf, msg); | |
3754 | } else { | |
3755 | /* It's a response from the local BMC. */ | |
3756 | requeue = handle_bmc_rsp(intf, msg); | |
3757 | } | |
3758 | ||
3759 | out: | |
3760 | return requeue; | |
3761 | } | |
3762 | ||
3763 | /* Handle a new message from the lower layer. */ | |
3764 | void ipmi_smi_msg_received(ipmi_smi_t intf, | |
3765 | struct ipmi_smi_msg *msg) | |
3766 | { | |
5956dce1 | 3767 | unsigned long flags = 0; /* keep us warning-free. */ |
1da177e4 | 3768 | int rv; |
5956dce1 | 3769 | int run_to_completion; |
1da177e4 LT |
3770 | |
3771 | ||
1da177e4 LT |
3772 | if ((msg->data_size >= 2) |
3773 | && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) | |
3774 | && (msg->data[1] == IPMI_SEND_MSG_CMD) | |
c70d7499 CM |
3775 | && (msg->user_data == NULL)) { |
3776 | /* | |
3777 | * This is the local response to a command send, start | |
3778 | * the timer for these. The user_data will not be | |
3779 | * NULL if this is a response send, and we will let | |
3780 | * response sends just go through. | |
3781 | */ | |
3782 | ||
3783 | /* | |
3784 | * Check for errors, if we get certain errors (ones | |
3785 | * that mean basically we can try again later), we | |
3786 | * ignore them and start the timer. Otherwise we | |
3787 | * report the error immediately. | |
3788 | */ | |
1da177e4 LT |
3789 | if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) |
3790 | && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) | |
46d52b09 CM |
3791 | && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR) |
3792 | && (msg->rsp[2] != IPMI_BUS_ERR) | |
c70d7499 | 3793 | && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) { |
1da177e4 LT |
3794 | int chan = msg->rsp[3] & 0xf; |
3795 | ||
3796 | /* Got an error sending the message, handle it. */ | |
1da177e4 LT |
3797 | if (chan >= IPMI_MAX_CHANNELS) |
3798 | ; /* This shouldn't happen */ | |
3799 | else if ((intf->channels[chan].medium | |
3800 | == IPMI_CHANNEL_MEDIUM_8023LAN) | |
3801 | || (intf->channels[chan].medium | |
3802 | == IPMI_CHANNEL_MEDIUM_ASYNC)) | |
b2655f26 | 3803 | ipmi_inc_stat(intf, sent_lan_command_errs); |
1da177e4 | 3804 | else |
b2655f26 | 3805 | ipmi_inc_stat(intf, sent_ipmb_command_errs); |
1da177e4 | 3806 | intf_err_seq(intf, msg->msgid, msg->rsp[2]); |
c70d7499 | 3807 | } else |
1da177e4 LT |
3808 | /* The message was sent, start the timer. */ |
3809 | intf_start_seq_timer(intf, msg->msgid); | |
1da177e4 LT |
3810 | |
3811 | ipmi_free_smi_msg(msg); | |
393d2cc3 | 3812 | goto out; |
1da177e4 LT |
3813 | } |
3814 | ||
c70d7499 CM |
3815 | /* |
3816 | * To preserve message order, if the list is not empty, we | |
3817 | * tack this message onto the end of the list. | |
3818 | */ | |
5956dce1 KB |
3819 | run_to_completion = intf->run_to_completion; |
3820 | if (!run_to_completion) | |
3821 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); | |
393d2cc3 CM |
3822 | if (!list_empty(&intf->waiting_msgs)) { |
3823 | list_add_tail(&msg->link, &intf->waiting_msgs); | |
5956dce1 KB |
3824 | if (!run_to_completion) |
3825 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
393d2cc3 | 3826 | goto out; |
1da177e4 | 3827 | } |
5956dce1 KB |
3828 | if (!run_to_completion) |
3829 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
c70d7499 | 3830 | |
1da177e4 LT |
3831 | rv = handle_new_recv_msg(intf, msg); |
3832 | if (rv > 0) { | |
c70d7499 CM |
3833 | /* |
3834 | * Could not handle the message now, just add it to a | |
3835 | * list to handle later. | |
3836 | */ | |
5956dce1 KB |
3837 | run_to_completion = intf->run_to_completion; |
3838 | if (!run_to_completion) | |
3839 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); | |
393d2cc3 | 3840 | list_add_tail(&msg->link, &intf->waiting_msgs); |
5956dce1 KB |
3841 | if (!run_to_completion) |
3842 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); | |
1da177e4 LT |
3843 | } else if (rv == 0) { |
3844 | ipmi_free_smi_msg(msg); | |
3845 | } | |
3846 | ||
393d2cc3 CM |
3847 | out: |
3848 | return; | |
1da177e4 | 3849 | } |
c70d7499 | 3850 | EXPORT_SYMBOL(ipmi_smi_msg_received); |
1da177e4 LT |
3851 | |
3852 | void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf) | |
3853 | { | |
3854 | ipmi_user_t user; | |
3855 | ||
393d2cc3 CM |
3856 | rcu_read_lock(); |
3857 | list_for_each_entry_rcu(user, &intf->users, link) { | |
8a3628d5 | 3858 | if (!user->handler->ipmi_watchdog_pretimeout) |
1da177e4 LT |
3859 | continue; |
3860 | ||
3861 | user->handler->ipmi_watchdog_pretimeout(user->handler_data); | |
3862 | } | |
393d2cc3 | 3863 | rcu_read_unlock(); |
1da177e4 | 3864 | } |
c70d7499 | 3865 | EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); |
1da177e4 | 3866 | |
882fe011 CM |
3867 | static struct ipmi_smi_msg * |
3868 | smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, | |
3869 | unsigned char seq, long seqid) | |
1da177e4 | 3870 | { |
882fe011 | 3871 | struct ipmi_smi_msg *smi_msg = ipmi_alloc_smi_msg(); |
1da177e4 | 3872 | if (!smi_msg) |
c70d7499 CM |
3873 | /* |
3874 | * If we can't allocate the message, then just return, we | |
3875 | * get 4 retries, so this should be ok. | |
3876 | */ | |
882fe011 | 3877 | return NULL; |
1da177e4 LT |
3878 | |
3879 | memcpy(smi_msg->data, recv_msg->msg.data, recv_msg->msg.data_len); | |
3880 | smi_msg->data_size = recv_msg->msg.data_len; | |
3881 | smi_msg->msgid = STORE_SEQ_IN_MSGID(seq, seqid); | |
c70d7499 | 3882 | |
1da177e4 LT |
3883 | #ifdef DEBUG_MSGING |
3884 | { | |
3885 | int m; | |
3886 | printk("Resend: "); | |
e8b33617 | 3887 | for (m = 0; m < smi_msg->data_size; m++) |
1da177e4 LT |
3888 | printk(" %2.2x", smi_msg->data[m]); |
3889 | printk("\n"); | |
3890 | } | |
3891 | #endif | |
882fe011 | 3892 | return smi_msg; |
1da177e4 LT |
3893 | } |
3894 | ||
393d2cc3 CM |
3895 | static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent, |
3896 | struct list_head *timeouts, long timeout_period, | |
3897 | int slot, unsigned long *flags) | |
3898 | { | |
b2c03941 CM |
3899 | struct ipmi_recv_msg *msg; |
3900 | struct ipmi_smi_handlers *handlers; | |
3901 | ||
3902 | if (intf->intf_num == -1) | |
3903 | return; | |
393d2cc3 CM |
3904 | |
3905 | if (!ent->inuse) | |
3906 | return; | |
3907 | ||
3908 | ent->timeout -= timeout_period; | |
3909 | if (ent->timeout > 0) | |
3910 | return; | |
3911 | ||
3912 | if (ent->retries_left == 0) { | |
3913 | /* The message has used all its retries. */ | |
3914 | ent->inuse = 0; | |
3915 | msg = ent->recv_msg; | |
3916 | list_add_tail(&msg->link, timeouts); | |
393d2cc3 | 3917 | if (ent->broadcast) |
b2655f26 | 3918 | ipmi_inc_stat(intf, timed_out_ipmb_broadcasts); |
25176ed6 | 3919 | else if (is_lan_addr(&ent->recv_msg->addr)) |
b2655f26 | 3920 | ipmi_inc_stat(intf, timed_out_lan_commands); |
393d2cc3 | 3921 | else |
b2655f26 | 3922 | ipmi_inc_stat(intf, timed_out_ipmb_commands); |
393d2cc3 CM |
3923 | } else { |
3924 | struct ipmi_smi_msg *smi_msg; | |
3925 | /* More retries, send again. */ | |
3926 | ||
c70d7499 CM |
3927 | /* |
3928 | * Start with the max timer, set to normal timer after | |
3929 | * the message is sent. | |
3930 | */ | |
393d2cc3 CM |
3931 | ent->timeout = MAX_MSG_TIMEOUT; |
3932 | ent->retries_left--; | |
393d2cc3 CM |
3933 | smi_msg = smi_from_recv_msg(intf, ent->recv_msg, slot, |
3934 | ent->seqid); | |
25176ed6 CM |
3935 | if (!smi_msg) { |
3936 | if (is_lan_addr(&ent->recv_msg->addr)) | |
3937 | ipmi_inc_stat(intf, | |
3938 | dropped_rexmit_lan_commands); | |
3939 | else | |
3940 | ipmi_inc_stat(intf, | |
3941 | dropped_rexmit_ipmb_commands); | |
393d2cc3 | 3942 | return; |
25176ed6 | 3943 | } |
393d2cc3 CM |
3944 | |
3945 | spin_unlock_irqrestore(&intf->seq_lock, *flags); | |
b2c03941 | 3946 | |
c70d7499 CM |
3947 | /* |
3948 | * Send the new message. We send with a zero | |
3949 | * priority. It timed out, I doubt time is that | |
3950 | * critical now, and high priority messages are really | |
3951 | * only for messages to the local MC, which don't get | |
3952 | * resent. | |
3953 | */ | |
b2c03941 | 3954 | handlers = intf->handlers; |
25176ed6 CM |
3955 | if (handlers) { |
3956 | if (is_lan_addr(&ent->recv_msg->addr)) | |
3957 | ipmi_inc_stat(intf, | |
3958 | retransmitted_lan_commands); | |
3959 | else | |
3960 | ipmi_inc_stat(intf, | |
3961 | retransmitted_ipmb_commands); | |
3962 | ||
b2c03941 CM |
3963 | intf->handlers->sender(intf->send_info, |
3964 | smi_msg, 0); | |
25176ed6 | 3965 | } else |
b2c03941 CM |
3966 | ipmi_free_smi_msg(smi_msg); |
3967 | ||
393d2cc3 CM |
3968 | spin_lock_irqsave(&intf->seq_lock, *flags); |
3969 | } | |
3970 | } | |
3971 | ||
3972 | static void ipmi_timeout_handler(long timeout_period) | |
1da177e4 LT |
3973 | { |
3974 | ipmi_smi_t intf; | |
3975 | struct list_head timeouts; | |
3976 | struct ipmi_recv_msg *msg, *msg2; | |
3977 | struct ipmi_smi_msg *smi_msg, *smi_msg2; | |
3978 | unsigned long flags; | |
bca0324d | 3979 | int i; |
1da177e4 | 3980 | |
bca0324d CM |
3981 | rcu_read_lock(); |
3982 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
1da177e4 | 3983 | /* See if any waiting messages need to be processed. */ |
393d2cc3 | 3984 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
8a3628d5 CM |
3985 | list_for_each_entry_safe(smi_msg, smi_msg2, |
3986 | &intf->waiting_msgs, link) { | |
3987 | if (!handle_new_recv_msg(intf, smi_msg)) { | |
1da177e4 LT |
3988 | list_del(&smi_msg->link); |
3989 | ipmi_free_smi_msg(smi_msg); | |
3990 | } else { | |
c70d7499 CM |
3991 | /* |
3992 | * To preserve message order, quit if we | |
3993 | * can't handle a message. | |
3994 | */ | |
1da177e4 LT |
3995 | break; |
3996 | } | |
3997 | } | |
393d2cc3 | 3998 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
1da177e4 | 3999 | |
c70d7499 CM |
4000 | /* |
4001 | * Go through the seq table and find any messages that | |
4002 | * have timed out, putting them in the timeouts | |
4003 | * list. | |
4004 | */ | |
41c57a87 | 4005 | INIT_LIST_HEAD(&timeouts); |
393d2cc3 | 4006 | spin_lock_irqsave(&intf->seq_lock, flags); |
bca0324d CM |
4007 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) |
4008 | check_msg_timeout(intf, &(intf->seq_table[i]), | |
4009 | &timeouts, timeout_period, i, | |
393d2cc3 CM |
4010 | &flags); |
4011 | spin_unlock_irqrestore(&intf->seq_lock, flags); | |
4012 | ||
4013 | list_for_each_entry_safe(msg, msg2, &timeouts, link) | |
b2c03941 | 4014 | deliver_err_response(msg, IPMI_TIMEOUT_COMPLETION_CODE); |
b9675136 CM |
4015 | |
4016 | /* | |
4017 | * Maintenance mode handling. Check the timeout | |
4018 | * optimistically before we claim the lock. It may | |
4019 | * mean a timeout gets missed occasionally, but that | |
4020 | * only means the timeout gets extended by one period | |
4021 | * in that case. No big deal, and it avoids the lock | |
4022 | * most of the time. | |
4023 | */ | |
4024 | if (intf->auto_maintenance_timeout > 0) { | |
4025 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); | |
4026 | if (intf->auto_maintenance_timeout > 0) { | |
4027 | intf->auto_maintenance_timeout | |
4028 | -= timeout_period; | |
4029 | if (!intf->maintenance_mode | |
c70d7499 | 4030 | && (intf->auto_maintenance_timeout <= 0)) { |
b9675136 CM |
4031 | intf->maintenance_mode_enable = 0; |
4032 | maintenance_mode_update(intf); | |
4033 | } | |
4034 | } | |
4035 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, | |
4036 | flags); | |
4037 | } | |
1da177e4 | 4038 | } |
bca0324d | 4039 | rcu_read_unlock(); |
1da177e4 LT |
4040 | } |
4041 | ||
4042 | static void ipmi_request_event(void) | |
4043 | { | |
b2c03941 CM |
4044 | ipmi_smi_t intf; |
4045 | struct ipmi_smi_handlers *handlers; | |
1da177e4 | 4046 | |
bca0324d | 4047 | rcu_read_lock(); |
c70d7499 CM |
4048 | /* |
4049 | * Called from the timer, no need to check if handlers is | |
4050 | * valid. | |
4051 | */ | |
b2c03941 | 4052 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b9675136 CM |
4053 | /* No event requests when in maintenance mode. */ |
4054 | if (intf->maintenance_mode_enable) | |
4055 | continue; | |
4056 | ||
b2c03941 CM |
4057 | handlers = intf->handlers; |
4058 | if (handlers) | |
4059 | handlers->request_events(intf->send_info); | |
4060 | } | |
bca0324d | 4061 | rcu_read_unlock(); |
1da177e4 LT |
4062 | } |
4063 | ||
4064 | static struct timer_list ipmi_timer; | |
4065 | ||
ddac44b7 CM |
4066 | /* Call every ~1000 ms. */ |
4067 | #define IPMI_TIMEOUT_TIME 1000 | |
1da177e4 LT |
4068 | |
4069 | /* How many jiffies does it take to get to the timeout time. */ | |
4070 | #define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000) | |
4071 | ||
c70d7499 CM |
4072 | /* |
4073 | * Request events from the queue every second (this is the number of | |
4074 | * IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the | |
4075 | * future, IPMI will add a way to know immediately if an event is in | |
4076 | * the queue and this silliness can go away. | |
4077 | */ | |
1da177e4 LT |
4078 | #define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME)) |
4079 | ||
8f43f84f | 4080 | static atomic_t stop_operation; |
1da177e4 LT |
4081 | static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
4082 | ||
4083 | static void ipmi_timeout(unsigned long data) | |
4084 | { | |
8f43f84f | 4085 | if (atomic_read(&stop_operation)) |
1da177e4 | 4086 | return; |
1da177e4 LT |
4087 | |
4088 | ticks_to_req_ev--; | |
4089 | if (ticks_to_req_ev == 0) { | |
4090 | ipmi_request_event(); | |
4091 | ticks_to_req_ev = IPMI_REQUEST_EV_TIME; | |
4092 | } | |
4093 | ||
4094 | ipmi_timeout_handler(IPMI_TIMEOUT_TIME); | |
4095 | ||
8f43f84f | 4096 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); |
1da177e4 LT |
4097 | } |
4098 | ||
4099 | ||
4100 | static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0); | |
4101 | static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0); | |
4102 | ||
4103 | /* FIXME - convert these to slabs. */ | |
4104 | static void free_smi_msg(struct ipmi_smi_msg *msg) | |
4105 | { | |
4106 | atomic_dec(&smi_msg_inuse_count); | |
4107 | kfree(msg); | |
4108 | } | |
4109 | ||
4110 | struct ipmi_smi_msg *ipmi_alloc_smi_msg(void) | |
4111 | { | |
4112 | struct ipmi_smi_msg *rv; | |
4113 | rv = kmalloc(sizeof(struct ipmi_smi_msg), GFP_ATOMIC); | |
4114 | if (rv) { | |
4115 | rv->done = free_smi_msg; | |
4116 | rv->user_data = NULL; | |
4117 | atomic_inc(&smi_msg_inuse_count); | |
4118 | } | |
4119 | return rv; | |
4120 | } | |
c70d7499 | 4121 | EXPORT_SYMBOL(ipmi_alloc_smi_msg); |
1da177e4 LT |
4122 | |
4123 | static void free_recv_msg(struct ipmi_recv_msg *msg) | |
4124 | { | |
4125 | atomic_dec(&recv_msg_inuse_count); | |
4126 | kfree(msg); | |
4127 | } | |
4128 | ||
74006309 | 4129 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void) |
1da177e4 LT |
4130 | { |
4131 | struct ipmi_recv_msg *rv; | |
4132 | ||
4133 | rv = kmalloc(sizeof(struct ipmi_recv_msg), GFP_ATOMIC); | |
4134 | if (rv) { | |
a9eec556 | 4135 | rv->user = NULL; |
1da177e4 LT |
4136 | rv->done = free_recv_msg; |
4137 | atomic_inc(&recv_msg_inuse_count); | |
4138 | } | |
4139 | return rv; | |
4140 | } | |
4141 | ||
393d2cc3 CM |
4142 | void ipmi_free_recv_msg(struct ipmi_recv_msg *msg) |
4143 | { | |
4144 | if (msg->user) | |
4145 | kref_put(&msg->user->refcount, free_user); | |
4146 | msg->done(msg); | |
4147 | } | |
c70d7499 | 4148 | EXPORT_SYMBOL(ipmi_free_recv_msg); |
393d2cc3 | 4149 | |
1da177e4 LT |
4150 | #ifdef CONFIG_IPMI_PANIC_EVENT |
4151 | ||
4152 | static void dummy_smi_done_handler(struct ipmi_smi_msg *msg) | |
4153 | { | |
4154 | } | |
4155 | ||
4156 | static void dummy_recv_done_handler(struct ipmi_recv_msg *msg) | |
4157 | { | |
4158 | } | |
4159 | ||
4160 | #ifdef CONFIG_IPMI_PANIC_STRING | |
56a55ec6 | 4161 | static void event_receiver_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 4162 | { |
56a55ec6 CM |
4163 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
4164 | && (msg->msg.netfn == IPMI_NETFN_SENSOR_EVENT_RESPONSE) | |
4165 | && (msg->msg.cmd == IPMI_GET_EVENT_RECEIVER_CMD) | |
c70d7499 | 4166 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { |
1da177e4 | 4167 | /* A get event receiver command, save it. */ |
56a55ec6 CM |
4168 | intf->event_receiver = msg->msg.data[1]; |
4169 | intf->event_receiver_lun = msg->msg.data[2] & 0x3; | |
1da177e4 LT |
4170 | } |
4171 | } | |
4172 | ||
56a55ec6 | 4173 | static void device_id_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
1da177e4 | 4174 | { |
56a55ec6 CM |
4175 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
4176 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) | |
4177 | && (msg->msg.cmd == IPMI_GET_DEVICE_ID_CMD) | |
c70d7499 CM |
4178 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { |
4179 | /* | |
4180 | * A get device id command, save if we are an event | |
4181 | * receiver or generator. | |
4182 | */ | |
56a55ec6 CM |
4183 | intf->local_sel_device = (msg->msg.data[6] >> 2) & 1; |
4184 | intf->local_event_generator = (msg->msg.data[6] >> 5) & 1; | |
1da177e4 LT |
4185 | } |
4186 | } | |
4187 | #endif | |
4188 | ||
4189 | static void send_panic_events(char *str) | |
4190 | { | |
4191 | struct kernel_ipmi_msg msg; | |
4192 | ipmi_smi_t intf; | |
4193 | unsigned char data[16]; | |
1da177e4 LT |
4194 | struct ipmi_system_interface_addr *si; |
4195 | struct ipmi_addr addr; | |
4196 | struct ipmi_smi_msg smi_msg; | |
4197 | struct ipmi_recv_msg recv_msg; | |
4198 | ||
4199 | si = (struct ipmi_system_interface_addr *) &addr; | |
4200 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
4201 | si->channel = IPMI_BMC_CHANNEL; | |
4202 | si->lun = 0; | |
4203 | ||
4204 | /* Fill in an event telling that we have failed. */ | |
4205 | msg.netfn = 0x04; /* Sensor or Event. */ | |
4206 | msg.cmd = 2; /* Platform event command. */ | |
4207 | msg.data = data; | |
4208 | msg.data_len = 8; | |
cda315ab | 4209 | data[0] = 0x41; /* Kernel generator ID, IPMI table 5-4 */ |
1da177e4 LT |
4210 | data[1] = 0x03; /* This is for IPMI 1.0. */ |
4211 | data[2] = 0x20; /* OS Critical Stop, IPMI table 36-3 */ | |
4212 | data[4] = 0x6f; /* Sensor specific, IPMI table 36-1 */ | |
4213 | data[5] = 0xa1; /* Runtime stop OEM bytes 2 & 3. */ | |
4214 | ||
c70d7499 CM |
4215 | /* |
4216 | * Put a few breadcrumbs in. Hopefully later we can add more things | |
4217 | * to make the panic events more useful. | |
4218 | */ | |
1da177e4 LT |
4219 | if (str) { |
4220 | data[3] = str[0]; | |
4221 | data[6] = str[1]; | |
4222 | data[7] = str[2]; | |
4223 | } | |
4224 | ||
4225 | smi_msg.done = dummy_smi_done_handler; | |
4226 | recv_msg.done = dummy_recv_done_handler; | |
4227 | ||
4228 | /* For every registered interface, send the event. */ | |
bca0324d | 4229 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b2c03941 CM |
4230 | if (!intf->handlers) |
4231 | /* Interface is not ready. */ | |
1da177e4 LT |
4232 | continue; |
4233 | ||
5956dce1 | 4234 | intf->run_to_completion = 1; |
1da177e4 LT |
4235 | /* Send the event announcing the panic. */ |
4236 | intf->handlers->set_run_to_completion(intf->send_info, 1); | |
4237 | i_ipmi_request(NULL, | |
4238 | intf, | |
4239 | &addr, | |
4240 | 0, | |
4241 | &msg, | |
56a55ec6 | 4242 | intf, |
1da177e4 LT |
4243 | &smi_msg, |
4244 | &recv_msg, | |
4245 | 0, | |
c14979b9 CM |
4246 | intf->channels[0].address, |
4247 | intf->channels[0].lun, | |
1da177e4 LT |
4248 | 0, 1); /* Don't retry, and don't wait. */ |
4249 | } | |
4250 | ||
4251 | #ifdef CONFIG_IPMI_PANIC_STRING | |
c70d7499 CM |
4252 | /* |
4253 | * On every interface, dump a bunch of OEM event holding the | |
4254 | * string. | |
4255 | */ | |
4256 | if (!str) | |
1da177e4 LT |
4257 | return; |
4258 | ||
bca0324d CM |
4259 | /* For every registered interface, send the event. */ |
4260 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { | |
1da177e4 LT |
4261 | char *p = str; |
4262 | struct ipmi_ipmb_addr *ipmb; | |
4263 | int j; | |
4264 | ||
bca0324d CM |
4265 | if (intf->intf_num == -1) |
4266 | /* Interface was not ready yet. */ | |
1da177e4 LT |
4267 | continue; |
4268 | ||
78ba2faf CM |
4269 | /* |
4270 | * intf_num is used as an marker to tell if the | |
4271 | * interface is valid. Thus we need a read barrier to | |
4272 | * make sure data fetched before checking intf_num | |
4273 | * won't be used. | |
4274 | */ | |
4275 | smp_rmb(); | |
4276 | ||
c70d7499 CM |
4277 | /* |
4278 | * First job here is to figure out where to send the | |
4279 | * OEM events. There's no way in IPMI to send OEM | |
4280 | * events using an event send command, so we have to | |
4281 | * find the SEL to put them in and stick them in | |
4282 | * there. | |
4283 | */ | |
1da177e4 LT |
4284 | |
4285 | /* Get capabilities from the get device id. */ | |
4286 | intf->local_sel_device = 0; | |
4287 | intf->local_event_generator = 0; | |
4288 | intf->event_receiver = 0; | |
4289 | ||
4290 | /* Request the device info from the local MC. */ | |
4291 | msg.netfn = IPMI_NETFN_APP_REQUEST; | |
4292 | msg.cmd = IPMI_GET_DEVICE_ID_CMD; | |
4293 | msg.data = NULL; | |
4294 | msg.data_len = 0; | |
4295 | intf->null_user_handler = device_id_fetcher; | |
4296 | i_ipmi_request(NULL, | |
4297 | intf, | |
4298 | &addr, | |
4299 | 0, | |
4300 | &msg, | |
56a55ec6 | 4301 | intf, |
1da177e4 LT |
4302 | &smi_msg, |
4303 | &recv_msg, | |
4304 | 0, | |
c14979b9 CM |
4305 | intf->channels[0].address, |
4306 | intf->channels[0].lun, | |
1da177e4 LT |
4307 | 0, 1); /* Don't retry, and don't wait. */ |
4308 | ||
4309 | if (intf->local_event_generator) { | |
4310 | /* Request the event receiver from the local MC. */ | |
4311 | msg.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; | |
4312 | msg.cmd = IPMI_GET_EVENT_RECEIVER_CMD; | |
4313 | msg.data = NULL; | |
4314 | msg.data_len = 0; | |
4315 | intf->null_user_handler = event_receiver_fetcher; | |
4316 | i_ipmi_request(NULL, | |
4317 | intf, | |
4318 | &addr, | |
4319 | 0, | |
4320 | &msg, | |
56a55ec6 | 4321 | intf, |
1da177e4 LT |
4322 | &smi_msg, |
4323 | &recv_msg, | |
4324 | 0, | |
c14979b9 CM |
4325 | intf->channels[0].address, |
4326 | intf->channels[0].lun, | |
1da177e4 LT |
4327 | 0, 1); /* no retry, and no wait. */ |
4328 | } | |
4329 | intf->null_user_handler = NULL; | |
4330 | ||
c70d7499 CM |
4331 | /* |
4332 | * Validate the event receiver. The low bit must not | |
4333 | * be 1 (it must be a valid IPMB address), it cannot | |
4334 | * be zero, and it must not be my address. | |
4335 | */ | |
4336 | if (((intf->event_receiver & 1) == 0) | |
1da177e4 | 4337 | && (intf->event_receiver != 0) |
c70d7499 CM |
4338 | && (intf->event_receiver != intf->channels[0].address)) { |
4339 | /* | |
4340 | * The event receiver is valid, send an IPMB | |
4341 | * message. | |
4342 | */ | |
1da177e4 LT |
4343 | ipmb = (struct ipmi_ipmb_addr *) &addr; |
4344 | ipmb->addr_type = IPMI_IPMB_ADDR_TYPE; | |
4345 | ipmb->channel = 0; /* FIXME - is this right? */ | |
4346 | ipmb->lun = intf->event_receiver_lun; | |
4347 | ipmb->slave_addr = intf->event_receiver; | |
4348 | } else if (intf->local_sel_device) { | |
c70d7499 CM |
4349 | /* |
4350 | * The event receiver was not valid (or was | |
4351 | * me), but I am an SEL device, just dump it | |
4352 | * in my SEL. | |
4353 | */ | |
1da177e4 LT |
4354 | si = (struct ipmi_system_interface_addr *) &addr; |
4355 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
4356 | si->channel = IPMI_BMC_CHANNEL; | |
4357 | si->lun = 0; | |
4358 | } else | |
4359 | continue; /* No where to send the event. */ | |
4360 | ||
1da177e4 LT |
4361 | msg.netfn = IPMI_NETFN_STORAGE_REQUEST; /* Storage. */ |
4362 | msg.cmd = IPMI_ADD_SEL_ENTRY_CMD; | |
4363 | msg.data = data; | |
4364 | msg.data_len = 16; | |
4365 | ||
4366 | j = 0; | |
4367 | while (*p) { | |
4368 | int size = strlen(p); | |
4369 | ||
4370 | if (size > 11) | |
4371 | size = 11; | |
4372 | data[0] = 0; | |
4373 | data[1] = 0; | |
4374 | data[2] = 0xf0; /* OEM event without timestamp. */ | |
c14979b9 | 4375 | data[3] = intf->channels[0].address; |
1da177e4 | 4376 | data[4] = j++; /* sequence # */ |
c70d7499 CM |
4377 | /* |
4378 | * Always give 11 bytes, so strncpy will fill | |
4379 | * it with zeroes for me. | |
4380 | */ | |
1da177e4 LT |
4381 | strncpy(data+5, p, 11); |
4382 | p += size; | |
4383 | ||
4384 | i_ipmi_request(NULL, | |
4385 | intf, | |
4386 | &addr, | |
4387 | 0, | |
4388 | &msg, | |
56a55ec6 | 4389 | intf, |
1da177e4 LT |
4390 | &smi_msg, |
4391 | &recv_msg, | |
4392 | 0, | |
c14979b9 CM |
4393 | intf->channels[0].address, |
4394 | intf->channels[0].lun, | |
1da177e4 LT |
4395 | 0, 1); /* no retry, and no wait. */ |
4396 | } | |
c70d7499 | 4397 | } |
1da177e4 LT |
4398 | #endif /* CONFIG_IPMI_PANIC_STRING */ |
4399 | } | |
4400 | #endif /* CONFIG_IPMI_PANIC_EVENT */ | |
4401 | ||
0c8204b3 | 4402 | static int has_panicked; |
1da177e4 LT |
4403 | |
4404 | static int panic_event(struct notifier_block *this, | |
4405 | unsigned long event, | |
c70d7499 | 4406 | void *ptr) |
1da177e4 | 4407 | { |
1da177e4 LT |
4408 | ipmi_smi_t intf; |
4409 | ||
f18190bd | 4410 | if (has_panicked) |
1da177e4 | 4411 | return NOTIFY_DONE; |
f18190bd | 4412 | has_panicked = 1; |
1da177e4 LT |
4413 | |
4414 | /* For every registered interface, set it to run to completion. */ | |
bca0324d | 4415 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
b2c03941 CM |
4416 | if (!intf->handlers) |
4417 | /* Interface is not ready. */ | |
1da177e4 LT |
4418 | continue; |
4419 | ||
5956dce1 | 4420 | intf->run_to_completion = 1; |
1da177e4 LT |
4421 | intf->handlers->set_run_to_completion(intf->send_info, 1); |
4422 | } | |
4423 | ||
4424 | #ifdef CONFIG_IPMI_PANIC_EVENT | |
4425 | send_panic_events(ptr); | |
4426 | #endif | |
4427 | ||
4428 | return NOTIFY_DONE; | |
4429 | } | |
4430 | ||
4431 | static struct notifier_block panic_block = { | |
4432 | .notifier_call = panic_event, | |
4433 | .next = NULL, | |
4434 | .priority = 200 /* priority: INT_MAX >= x >= 0 */ | |
4435 | }; | |
4436 | ||
4437 | static int ipmi_init_msghandler(void) | |
4438 | { | |
50c812b2 | 4439 | int rv; |
1da177e4 LT |
4440 | |
4441 | if (initialized) | |
4442 | return 0; | |
4443 | ||
fe2d5ffc | 4444 | rv = driver_register(&ipmidriver.driver); |
50c812b2 CM |
4445 | if (rv) { |
4446 | printk(KERN_ERR PFX "Could not register IPMI driver\n"); | |
4447 | return rv; | |
4448 | } | |
4449 | ||
1da177e4 | 4450 | printk(KERN_INFO "ipmi message handler version " |
1fdd75bd | 4451 | IPMI_DRIVER_VERSION "\n"); |
1da177e4 | 4452 | |
3b625943 | 4453 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
4454 | proc_ipmi_root = proc_mkdir("ipmi", NULL); |
4455 | if (!proc_ipmi_root) { | |
4456 | printk(KERN_ERR PFX "Unable to create IPMI proc dir"); | |
4457 | return -ENOMEM; | |
4458 | } | |
4459 | ||
3b625943 | 4460 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 4461 | |
409035e0 CM |
4462 | setup_timer(&ipmi_timer, ipmi_timeout, 0); |
4463 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); | |
1da177e4 | 4464 | |
e041c683 | 4465 | atomic_notifier_chain_register(&panic_notifier_list, &panic_block); |
1da177e4 LT |
4466 | |
4467 | initialized = 1; | |
4468 | ||
4469 | return 0; | |
4470 | } | |
4471 | ||
60ee6d5f | 4472 | static int __init ipmi_init_msghandler_mod(void) |
1da177e4 LT |
4473 | { |
4474 | ipmi_init_msghandler(); | |
4475 | return 0; | |
4476 | } | |
4477 | ||
60ee6d5f | 4478 | static void __exit cleanup_ipmi(void) |
1da177e4 LT |
4479 | { |
4480 | int count; | |
4481 | ||
4482 | if (!initialized) | |
4483 | return; | |
4484 | ||
e041c683 | 4485 | atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block); |
1da177e4 | 4486 | |
c70d7499 CM |
4487 | /* |
4488 | * This can't be called if any interfaces exist, so no worry | |
4489 | * about shutting down the interfaces. | |
4490 | */ | |
1da177e4 | 4491 | |
c70d7499 CM |
4492 | /* |
4493 | * Tell the timer to stop, then wait for it to stop. This | |
4494 | * avoids problems with race conditions removing the timer | |
4495 | * here. | |
4496 | */ | |
8f43f84f CM |
4497 | atomic_inc(&stop_operation); |
4498 | del_timer_sync(&ipmi_timer); | |
1da177e4 | 4499 | |
3b625943 | 4500 | #ifdef CONFIG_PROC_FS |
3542ae4c | 4501 | remove_proc_entry(proc_ipmi_root->name, NULL); |
3b625943 | 4502 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 4503 | |
fe2d5ffc | 4504 | driver_unregister(&ipmidriver.driver); |
50c812b2 | 4505 | |
1da177e4 LT |
4506 | initialized = 0; |
4507 | ||
4508 | /* Check for buffer leaks. */ | |
4509 | count = atomic_read(&smi_msg_inuse_count); | |
4510 | if (count != 0) | |
4511 | printk(KERN_WARNING PFX "SMI message count %d at exit\n", | |
4512 | count); | |
4513 | count = atomic_read(&recv_msg_inuse_count); | |
4514 | if (count != 0) | |
4515 | printk(KERN_WARNING PFX "recv message count %d at exit\n", | |
4516 | count); | |
4517 | } | |
4518 | module_exit(cleanup_ipmi); | |
4519 | ||
4520 | module_init(ipmi_init_msghandler_mod); | |
4521 | MODULE_LICENSE("GPL"); | |
1fdd75bd | 4522 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
c70d7499 CM |
4523 | MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI" |
4524 | " interface."); | |
1fdd75bd | 4525 | MODULE_VERSION(IPMI_DRIVER_VERSION); |