Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * ipmi_poweroff.c | |
3 | * | |
4 | * MontaVista IPMI Poweroff extension to sys_reboot | |
5 | * | |
6 | * Author: MontaVista Software, Inc. | |
7 | * Steven Dake <sdake@mvista.com> | |
8 | * Corey Minyard <cminyard@mvista.com> | |
9 | * source@mvista.com | |
10 | * | |
11 | * Copyright 2002,2004 MontaVista Software Inc. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify it | |
14 | * under the terms of the GNU General Public License as published by the | |
15 | * Free Software Foundation; either version 2 of the License, or (at your | |
16 | * option) any later version. | |
17 | * | |
18 | * | |
19 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
20 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
21 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
24 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS | |
25 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
26 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
27 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
28 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License along | |
31 | * with this program; if not, write to the Free Software Foundation, Inc., | |
32 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
33 | */ | |
1da177e4 | 34 | #include <linux/module.h> |
3b625943 CM |
35 | #include <linux/moduleparam.h> |
36 | #include <linux/proc_fs.h> | |
1da177e4 | 37 | #include <linux/string.h> |
77cf3973 | 38 | #include <linux/completion.h> |
e933b6d6 | 39 | #include <linux/pm.h> |
77cf3973 | 40 | #include <linux/kdev_t.h> |
1da177e4 LT |
41 | #include <linux/ipmi.h> |
42 | #include <linux/ipmi_smi.h> | |
43 | ||
44 | #define PFX "IPMI poweroff: " | |
1da177e4 | 45 | |
b2c03941 CM |
46 | static void ipmi_po_smi_gone(int if_num); |
47 | static void ipmi_po_new_smi(int if_num, struct device *device); | |
48 | ||
3b625943 CM |
49 | /* Definitions for controlling power off (if the system supports it). It |
50 | * conveniently matches the IPMI chassis control values. */ | |
51 | #define IPMI_CHASSIS_POWER_DOWN 0 /* power down, the default. */ | |
52 | #define IPMI_CHASSIS_POWER_CYCLE 0x02 /* power cycle */ | |
53 | ||
54 | /* the IPMI data command */ | |
8c702e16 | 55 | static int poweroff_powercycle; |
3b625943 | 56 | |
b2c03941 CM |
57 | /* Which interface to use, -1 means the first we see. */ |
58 | static int ifnum_to_use = -1; | |
59 | ||
60 | /* Our local state. */ | |
61 | static int ready = 0; | |
62 | static ipmi_user_t ipmi_user; | |
63 | static int ipmi_ifnum; | |
64 | static void (*specific_poweroff_func)(ipmi_user_t user) = NULL; | |
65 | ||
66 | /* Holds the old poweroff function so we can restore it on removal. */ | |
67 | static void (*old_poweroff_func)(void); | |
68 | ||
69 | static int set_param_ifnum(const char *val, struct kernel_param *kp) | |
70 | { | |
71 | int rv = param_set_int(val, kp); | |
72 | if (rv) | |
73 | return rv; | |
74 | if ((ifnum_to_use < 0) || (ifnum_to_use == ipmi_ifnum)) | |
75 | return 0; | |
76 | ||
77 | ipmi_po_smi_gone(ipmi_ifnum); | |
78 | ipmi_po_new_smi(ifnum_to_use, NULL); | |
79 | return 0; | |
80 | } | |
81 | ||
82 | module_param_call(ifnum_to_use, set_param_ifnum, param_get_int, | |
83 | &ifnum_to_use, 0644); | |
84 | MODULE_PARM_DESC(ifnum_to_use, "The interface number to use for the watchdog " | |
85 | "timer. Setting to -1 defaults to the first registered " | |
86 | "interface"); | |
87 | ||
3b625943 | 88 | /* parameter definition to allow user to flag power cycle */ |
a9d014af | 89 | module_param(poweroff_powercycle, int, 0644); |
21d6c542 | 90 | MODULE_PARM_DESC(poweroff_powercycle, " Set to non-zero to enable power cycle instead of power down. Power cycle is contingent on hardware support, otherwise it defaults back to power down."); |
3b625943 | 91 | |
1da177e4 LT |
92 | /* Stuff from the get device id command. */ |
93 | static unsigned int mfg_id; | |
94 | static unsigned int prod_id; | |
95 | static unsigned char capabilities; | |
168524d6 | 96 | static unsigned char ipmi_version; |
1da177e4 LT |
97 | |
98 | /* We use our own messages for this operation, we don't let the system | |
99 | allocate them, since we may be in a panic situation. The whole | |
100 | thing is single-threaded, anyway, so multiple messages are not | |
101 | required. */ | |
102 | static void dummy_smi_free(struct ipmi_smi_msg *msg) | |
103 | { | |
104 | } | |
105 | static void dummy_recv_free(struct ipmi_recv_msg *msg) | |
106 | { | |
107 | } | |
108 | static struct ipmi_smi_msg halt_smi_msg = | |
109 | { | |
110 | .done = dummy_smi_free | |
111 | }; | |
112 | static struct ipmi_recv_msg halt_recv_msg = | |
113 | { | |
114 | .done = dummy_recv_free | |
115 | }; | |
116 | ||
117 | ||
118 | /* | |
119 | * Code to send a message and wait for the reponse. | |
120 | */ | |
121 | ||
122 | static void receive_handler(struct ipmi_recv_msg *recv_msg, void *handler_data) | |
123 | { | |
77cf3973 | 124 | struct completion *comp = recv_msg->user_msg_data; |
1da177e4 | 125 | |
77cf3973 CM |
126 | if (comp) |
127 | complete(comp); | |
1da177e4 LT |
128 | } |
129 | ||
130 | static struct ipmi_user_hndl ipmi_poweroff_handler = | |
131 | { | |
132 | .ipmi_recv_hndl = receive_handler | |
133 | }; | |
134 | ||
135 | ||
136 | static int ipmi_request_wait_for_response(ipmi_user_t user, | |
137 | struct ipmi_addr *addr, | |
138 | struct kernel_ipmi_msg *send_msg) | |
139 | { | |
77cf3973 CM |
140 | int rv; |
141 | struct completion comp; | |
1da177e4 | 142 | |
77cf3973 | 143 | init_completion(&comp); |
1da177e4 | 144 | |
77cf3973 | 145 | rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, &comp, |
1da177e4 LT |
146 | &halt_smi_msg, &halt_recv_msg, 0); |
147 | if (rv) | |
148 | return rv; | |
149 | ||
77cf3973 | 150 | wait_for_completion(&comp); |
1da177e4 LT |
151 | |
152 | return halt_recv_msg.msg.data[0]; | |
153 | } | |
154 | ||
77cf3973 | 155 | /* We are in run-to-completion mode, no completion is desired. */ |
1da177e4 LT |
156 | static int ipmi_request_in_rc_mode(ipmi_user_t user, |
157 | struct ipmi_addr *addr, | |
158 | struct kernel_ipmi_msg *send_msg) | |
159 | { | |
77cf3973 | 160 | int rv; |
1da177e4 LT |
161 | |
162 | rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, NULL, | |
163 | &halt_smi_msg, &halt_recv_msg, 0); | |
164 | if (rv) | |
165 | return rv; | |
166 | ||
167 | return halt_recv_msg.msg.data[0]; | |
168 | } | |
169 | ||
170 | /* | |
171 | * ATCA Support | |
172 | */ | |
173 | ||
174 | #define IPMI_NETFN_ATCA 0x2c | |
175 | #define IPMI_ATCA_SET_POWER_CMD 0x11 | |
176 | #define IPMI_ATCA_GET_ADDR_INFO_CMD 0x01 | |
177 | #define IPMI_PICMG_ID 0 | |
178 | ||
179 | static int ipmi_atca_detect (ipmi_user_t user) | |
180 | { | |
181 | struct ipmi_system_interface_addr smi_addr; | |
182 | struct kernel_ipmi_msg send_msg; | |
183 | int rv; | |
184 | unsigned char data[1]; | |
185 | ||
186 | /* | |
187 | * Configure IPMI address for local access | |
188 | */ | |
189 | smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
190 | smi_addr.channel = IPMI_BMC_CHANNEL; | |
191 | smi_addr.lun = 0; | |
192 | ||
193 | /* | |
194 | * Use get address info to check and see if we are ATCA | |
195 | */ | |
196 | send_msg.netfn = IPMI_NETFN_ATCA; | |
197 | send_msg.cmd = IPMI_ATCA_GET_ADDR_INFO_CMD; | |
198 | data[0] = IPMI_PICMG_ID; | |
199 | send_msg.data = data; | |
200 | send_msg.data_len = sizeof(data); | |
201 | rv = ipmi_request_wait_for_response(user, | |
202 | (struct ipmi_addr *) &smi_addr, | |
203 | &send_msg); | |
204 | return !rv; | |
205 | } | |
206 | ||
207 | static void ipmi_poweroff_atca (ipmi_user_t user) | |
208 | { | |
209 | struct ipmi_system_interface_addr smi_addr; | |
210 | struct kernel_ipmi_msg send_msg; | |
211 | int rv; | |
212 | unsigned char data[4]; | |
213 | ||
214 | /* | |
215 | * Configure IPMI address for local access | |
216 | */ | |
217 | smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
218 | smi_addr.channel = IPMI_BMC_CHANNEL; | |
219 | smi_addr.lun = 0; | |
220 | ||
221 | printk(KERN_INFO PFX "Powering down via ATCA power command\n"); | |
222 | ||
223 | /* | |
224 | * Power down | |
225 | */ | |
226 | send_msg.netfn = IPMI_NETFN_ATCA; | |
227 | send_msg.cmd = IPMI_ATCA_SET_POWER_CMD; | |
228 | data[0] = IPMI_PICMG_ID; | |
229 | data[1] = 0; /* FRU id */ | |
230 | data[2] = 0; /* Power Level */ | |
231 | data[3] = 0; /* Don't change saved presets */ | |
232 | send_msg.data = data; | |
233 | send_msg.data_len = sizeof (data); | |
234 | rv = ipmi_request_in_rc_mode(user, | |
235 | (struct ipmi_addr *) &smi_addr, | |
236 | &send_msg); | |
237 | if (rv) { | |
238 | printk(KERN_ERR PFX "Unable to send ATCA powerdown message," | |
239 | " IPMI error 0x%x\n", rv); | |
240 | goto out; | |
241 | } | |
242 | ||
243 | out: | |
244 | return; | |
245 | } | |
246 | ||
247 | /* | |
248 | * CPI1 Support | |
249 | */ | |
250 | ||
251 | #define IPMI_NETFN_OEM_1 0xf8 | |
252 | #define OEM_GRP_CMD_SET_RESET_STATE 0x84 | |
253 | #define OEM_GRP_CMD_SET_POWER_STATE 0x82 | |
254 | #define IPMI_NETFN_OEM_8 0xf8 | |
255 | #define OEM_GRP_CMD_REQUEST_HOTSWAP_CTRL 0x80 | |
256 | #define OEM_GRP_CMD_GET_SLOT_GA 0xa3 | |
257 | #define IPMI_NETFN_SENSOR_EVT 0x10 | |
258 | #define IPMI_CMD_GET_EVENT_RECEIVER 0x01 | |
259 | ||
260 | #define IPMI_CPI1_PRODUCT_ID 0x000157 | |
261 | #define IPMI_CPI1_MANUFACTURER_ID 0x0108 | |
262 | ||
263 | static int ipmi_cpi1_detect (ipmi_user_t user) | |
264 | { | |
265 | return ((mfg_id == IPMI_CPI1_MANUFACTURER_ID) | |
266 | && (prod_id == IPMI_CPI1_PRODUCT_ID)); | |
267 | } | |
268 | ||
269 | static void ipmi_poweroff_cpi1 (ipmi_user_t user) | |
270 | { | |
271 | struct ipmi_system_interface_addr smi_addr; | |
272 | struct ipmi_ipmb_addr ipmb_addr; | |
273 | struct kernel_ipmi_msg send_msg; | |
274 | int rv; | |
275 | unsigned char data[1]; | |
276 | int slot; | |
277 | unsigned char hotswap_ipmb; | |
278 | unsigned char aer_addr; | |
279 | unsigned char aer_lun; | |
280 | ||
281 | /* | |
282 | * Configure IPMI address for local access | |
283 | */ | |
284 | smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
285 | smi_addr.channel = IPMI_BMC_CHANNEL; | |
286 | smi_addr.lun = 0; | |
287 | ||
288 | printk(KERN_INFO PFX "Powering down via CPI1 power command\n"); | |
289 | ||
290 | /* | |
291 | * Get IPMI ipmb address | |
292 | */ | |
293 | send_msg.netfn = IPMI_NETFN_OEM_8 >> 2; | |
294 | send_msg.cmd = OEM_GRP_CMD_GET_SLOT_GA; | |
295 | send_msg.data = NULL; | |
296 | send_msg.data_len = 0; | |
297 | rv = ipmi_request_in_rc_mode(user, | |
298 | (struct ipmi_addr *) &smi_addr, | |
299 | &send_msg); | |
300 | if (rv) | |
301 | goto out; | |
302 | slot = halt_recv_msg.msg.data[1]; | |
303 | hotswap_ipmb = (slot > 9) ? (0xb0 + 2 * slot) : (0xae + 2 * slot); | |
304 | ||
305 | /* | |
306 | * Get active event receiver | |
307 | */ | |
308 | send_msg.netfn = IPMI_NETFN_SENSOR_EVT >> 2; | |
309 | send_msg.cmd = IPMI_CMD_GET_EVENT_RECEIVER; | |
310 | send_msg.data = NULL; | |
311 | send_msg.data_len = 0; | |
312 | rv = ipmi_request_in_rc_mode(user, | |
313 | (struct ipmi_addr *) &smi_addr, | |
314 | &send_msg); | |
315 | if (rv) | |
316 | goto out; | |
317 | aer_addr = halt_recv_msg.msg.data[1]; | |
318 | aer_lun = halt_recv_msg.msg.data[2]; | |
319 | ||
320 | /* | |
321 | * Setup IPMB address target instead of local target | |
322 | */ | |
323 | ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; | |
324 | ipmb_addr.channel = 0; | |
325 | ipmb_addr.slave_addr = aer_addr; | |
326 | ipmb_addr.lun = aer_lun; | |
327 | ||
328 | /* | |
329 | * Send request hotswap control to remove blade from dpv | |
330 | */ | |
331 | send_msg.netfn = IPMI_NETFN_OEM_8 >> 2; | |
332 | send_msg.cmd = OEM_GRP_CMD_REQUEST_HOTSWAP_CTRL; | |
333 | send_msg.data = &hotswap_ipmb; | |
334 | send_msg.data_len = 1; | |
335 | ipmi_request_in_rc_mode(user, | |
336 | (struct ipmi_addr *) &ipmb_addr, | |
337 | &send_msg); | |
338 | ||
339 | /* | |
340 | * Set reset asserted | |
341 | */ | |
342 | send_msg.netfn = IPMI_NETFN_OEM_1 >> 2; | |
343 | send_msg.cmd = OEM_GRP_CMD_SET_RESET_STATE; | |
344 | send_msg.data = data; | |
345 | data[0] = 1; /* Reset asserted state */ | |
346 | send_msg.data_len = 1; | |
347 | rv = ipmi_request_in_rc_mode(user, | |
348 | (struct ipmi_addr *) &smi_addr, | |
349 | &send_msg); | |
350 | if (rv) | |
351 | goto out; | |
352 | ||
353 | /* | |
354 | * Power down | |
355 | */ | |
356 | send_msg.netfn = IPMI_NETFN_OEM_1 >> 2; | |
357 | send_msg.cmd = OEM_GRP_CMD_SET_POWER_STATE; | |
358 | send_msg.data = data; | |
359 | data[0] = 1; /* Power down state */ | |
360 | send_msg.data_len = 1; | |
361 | rv = ipmi_request_in_rc_mode(user, | |
362 | (struct ipmi_addr *) &smi_addr, | |
363 | &send_msg); | |
364 | if (rv) | |
365 | goto out; | |
366 | ||
367 | out: | |
368 | return; | |
369 | } | |
370 | ||
168524d6 CM |
371 | /* |
372 | * ipmi_dell_chassis_detect() | |
373 | * Dell systems with IPMI < 1.5 don't set the chassis capability bit | |
374 | * but they can handle a chassis poweroff or powercycle command. | |
375 | */ | |
376 | ||
377 | #define DELL_IANA_MFR_ID {0xA2, 0x02, 0x00} | |
378 | static int ipmi_dell_chassis_detect (ipmi_user_t user) | |
379 | { | |
380 | const char ipmi_version_major = ipmi_version & 0xF; | |
381 | const char ipmi_version_minor = (ipmi_version >> 4) & 0xF; | |
8a3628d5 | 382 | const char mfr[3] = DELL_IANA_MFR_ID; |
168524d6 CM |
383 | if (!memcmp(mfr, &mfg_id, sizeof(mfr)) && |
384 | ipmi_version_major <= 1 && | |
385 | ipmi_version_minor < 5) | |
386 | return 1; | |
387 | return 0; | |
388 | } | |
389 | ||
1da177e4 LT |
390 | /* |
391 | * Standard chassis support | |
392 | */ | |
393 | ||
394 | #define IPMI_NETFN_CHASSIS_REQUEST 0 | |
395 | #define IPMI_CHASSIS_CONTROL_CMD 0x02 | |
396 | ||
397 | static int ipmi_chassis_detect (ipmi_user_t user) | |
398 | { | |
399 | /* Chassis support, use it. */ | |
400 | return (capabilities & 0x80); | |
401 | } | |
402 | ||
403 | static void ipmi_poweroff_chassis (ipmi_user_t user) | |
404 | { | |
405 | struct ipmi_system_interface_addr smi_addr; | |
406 | struct kernel_ipmi_msg send_msg; | |
407 | int rv; | |
408 | unsigned char data[1]; | |
409 | ||
410 | /* | |
411 | * Configure IPMI address for local access | |
412 | */ | |
413 | smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
414 | smi_addr.channel = IPMI_BMC_CHANNEL; | |
415 | smi_addr.lun = 0; | |
416 | ||
3b625943 CM |
417 | powercyclefailed: |
418 | printk(KERN_INFO PFX "Powering %s via IPMI chassis control command\n", | |
8c702e16 | 419 | (poweroff_powercycle ? "cycle" : "down")); |
1da177e4 LT |
420 | |
421 | /* | |
422 | * Power down | |
423 | */ | |
424 | send_msg.netfn = IPMI_NETFN_CHASSIS_REQUEST; | |
425 | send_msg.cmd = IPMI_CHASSIS_CONTROL_CMD; | |
8c702e16 CM |
426 | if (poweroff_powercycle) |
427 | data[0] = IPMI_CHASSIS_POWER_CYCLE; | |
428 | else | |
429 | data[0] = IPMI_CHASSIS_POWER_DOWN; | |
1da177e4 LT |
430 | send_msg.data = data; |
431 | send_msg.data_len = sizeof(data); | |
432 | rv = ipmi_request_in_rc_mode(user, | |
433 | (struct ipmi_addr *) &smi_addr, | |
434 | &send_msg); | |
435 | if (rv) { | |
8c702e16 CM |
436 | if (poweroff_powercycle) { |
437 | /* power cycle failed, default to power down */ | |
438 | printk(KERN_ERR PFX "Unable to send chassis power " \ | |
439 | "cycle message, IPMI error 0x%x\n", rv); | |
440 | poweroff_powercycle = 0; | |
441 | goto powercyclefailed; | |
3b625943 | 442 | } |
1da177e4 | 443 | |
8c702e16 CM |
444 | printk(KERN_ERR PFX "Unable to send chassis power " \ |
445 | "down message, IPMI error 0x%x\n", rv); | |
446 | } | |
1da177e4 LT |
447 | } |
448 | ||
449 | ||
450 | /* Table of possible power off functions. */ | |
451 | struct poweroff_function { | |
452 | char *platform_type; | |
453 | int (*detect)(ipmi_user_t user); | |
454 | void (*poweroff_func)(ipmi_user_t user); | |
455 | }; | |
456 | ||
457 | static struct poweroff_function poweroff_functions[] = { | |
458 | { .platform_type = "ATCA", | |
459 | .detect = ipmi_atca_detect, | |
460 | .poweroff_func = ipmi_poweroff_atca }, | |
461 | { .platform_type = "CPI1", | |
462 | .detect = ipmi_cpi1_detect, | |
463 | .poweroff_func = ipmi_poweroff_cpi1 }, | |
168524d6 CM |
464 | { .platform_type = "chassis", |
465 | .detect = ipmi_dell_chassis_detect, | |
466 | .poweroff_func = ipmi_poweroff_chassis }, | |
1da177e4 LT |
467 | /* Chassis should generally be last, other things should override |
468 | it. */ | |
469 | { .platform_type = "chassis", | |
470 | .detect = ipmi_chassis_detect, | |
471 | .poweroff_func = ipmi_poweroff_chassis }, | |
472 | }; | |
473 | #define NUM_PO_FUNCS (sizeof(poweroff_functions) \ | |
474 | / sizeof(struct poweroff_function)) | |
475 | ||
476 | ||
1da177e4 LT |
477 | /* Called on a powerdown request. */ |
478 | static void ipmi_poweroff_function (void) | |
479 | { | |
480 | if (!ready) | |
481 | return; | |
482 | ||
483 | /* Use run-to-completion mode, since interrupts may be off. */ | |
484 | ipmi_user_set_run_to_completion(ipmi_user, 1); | |
485 | specific_poweroff_func(ipmi_user); | |
486 | ipmi_user_set_run_to_completion(ipmi_user, 0); | |
487 | } | |
488 | ||
489 | /* Wait for an IPMI interface to be installed, the first one installed | |
490 | will be grabbed by this code and used to perform the powerdown. */ | |
50c812b2 | 491 | static void ipmi_po_new_smi(int if_num, struct device *device) |
1da177e4 LT |
492 | { |
493 | struct ipmi_system_interface_addr smi_addr; | |
494 | struct kernel_ipmi_msg send_msg; | |
495 | int rv; | |
496 | int i; | |
497 | ||
498 | if (ready) | |
499 | return; | |
500 | ||
b2c03941 CM |
501 | if ((ifnum_to_use >= 0) && (ifnum_to_use != if_num)) |
502 | return; | |
503 | ||
3b625943 CM |
504 | rv = ipmi_create_user(if_num, &ipmi_poweroff_handler, NULL, |
505 | &ipmi_user); | |
1da177e4 LT |
506 | if (rv) { |
507 | printk(KERN_ERR PFX "could not create IPMI user, error %d\n", | |
508 | rv); | |
509 | return; | |
510 | } | |
511 | ||
b2c03941 CM |
512 | ipmi_ifnum = if_num; |
513 | ||
1da177e4 LT |
514 | /* |
515 | * Do a get device ide and store some results, since this is | |
516 | * used by several functions. | |
517 | */ | |
518 | smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
519 | smi_addr.channel = IPMI_BMC_CHANNEL; | |
520 | smi_addr.lun = 0; | |
521 | ||
522 | send_msg.netfn = IPMI_NETFN_APP_REQUEST; | |
523 | send_msg.cmd = IPMI_GET_DEVICE_ID_CMD; | |
524 | send_msg.data = NULL; | |
525 | send_msg.data_len = 0; | |
526 | rv = ipmi_request_wait_for_response(ipmi_user, | |
527 | (struct ipmi_addr *) &smi_addr, | |
528 | &send_msg); | |
529 | if (rv) { | |
530 | printk(KERN_ERR PFX "Unable to send IPMI get device id info," | |
531 | " IPMI error 0x%x\n", rv); | |
532 | goto out_err; | |
533 | } | |
534 | ||
535 | if (halt_recv_msg.msg.data_len < 12) { | |
536 | printk(KERN_ERR PFX "(chassis) IPMI get device id info too," | |
537 | " short, was %d bytes, needed %d bytes\n", | |
538 | halt_recv_msg.msg.data_len, 12); | |
539 | goto out_err; | |
540 | } | |
541 | ||
542 | mfg_id = (halt_recv_msg.msg.data[7] | |
543 | | (halt_recv_msg.msg.data[8] << 8) | |
544 | | (halt_recv_msg.msg.data[9] << 16)); | |
545 | prod_id = (halt_recv_msg.msg.data[10] | |
546 | | (halt_recv_msg.msg.data[11] << 8)); | |
547 | capabilities = halt_recv_msg.msg.data[6]; | |
168524d6 | 548 | ipmi_version = halt_recv_msg.msg.data[5]; |
1da177e4 LT |
549 | |
550 | ||
551 | /* Scan for a poweroff method */ | |
e8b33617 | 552 | for (i = 0; i < NUM_PO_FUNCS; i++) { |
1da177e4 LT |
553 | if (poweroff_functions[i].detect(ipmi_user)) |
554 | goto found; | |
555 | } | |
556 | ||
557 | out_err: | |
558 | printk(KERN_ERR PFX "Unable to find a poweroff function that" | |
559 | " will work, giving up\n"); | |
560 | ipmi_destroy_user(ipmi_user); | |
561 | return; | |
562 | ||
563 | found: | |
564 | printk(KERN_INFO PFX "Found a %s style poweroff function\n", | |
565 | poweroff_functions[i].platform_type); | |
566 | specific_poweroff_func = poweroff_functions[i].poweroff_func; | |
567 | old_poweroff_func = pm_power_off; | |
568 | pm_power_off = ipmi_poweroff_function; | |
569 | ready = 1; | |
570 | } | |
571 | ||
572 | static void ipmi_po_smi_gone(int if_num) | |
573 | { | |
b2c03941 CM |
574 | if (!ready) |
575 | return; | |
576 | ||
577 | if (ipmi_ifnum != if_num) | |
578 | return; | |
579 | ||
580 | ready = 0; | |
581 | ipmi_destroy_user(ipmi_user); | |
582 | pm_power_off = old_poweroff_func; | |
1da177e4 LT |
583 | } |
584 | ||
585 | static struct ipmi_smi_watcher smi_watcher = | |
586 | { | |
587 | .owner = THIS_MODULE, | |
588 | .new_smi = ipmi_po_new_smi, | |
589 | .smi_gone = ipmi_po_smi_gone | |
590 | }; | |
591 | ||
592 | ||
3b625943 | 593 | #ifdef CONFIG_PROC_FS |
8c702e16 CM |
594 | #include <linux/sysctl.h> |
595 | ||
596 | static ctl_table ipmi_table[] = { | |
597 | { .ctl_name = DEV_IPMI_POWEROFF_POWERCYCLE, | |
598 | .procname = "poweroff_powercycle", | |
599 | .data = &poweroff_powercycle, | |
600 | .maxlen = sizeof(poweroff_powercycle), | |
601 | .mode = 0644, | |
602 | .proc_handler = &proc_dointvec }, | |
603 | { } | |
604 | }; | |
3b625943 | 605 | |
8c702e16 CM |
606 | static ctl_table ipmi_dir_table[] = { |
607 | { .ctl_name = DEV_IPMI, | |
608 | .procname = "ipmi", | |
609 | .mode = 0555, | |
610 | .child = ipmi_table }, | |
611 | { } | |
612 | }; | |
3b625943 | 613 | |
8c702e16 CM |
614 | static ctl_table ipmi_root_table[] = { |
615 | { .ctl_name = CTL_DEV, | |
616 | .procname = "dev", | |
617 | .mode = 0555, | |
618 | .child = ipmi_dir_table }, | |
619 | { } | |
620 | }; | |
621 | ||
622 | static struct ctl_table_header *ipmi_table_header; | |
3b625943 CM |
623 | #endif /* CONFIG_PROC_FS */ |
624 | ||
1da177e4 LT |
625 | /* |
626 | * Startup and shutdown functions. | |
627 | */ | |
628 | static int ipmi_poweroff_init (void) | |
629 | { | |
8c702e16 | 630 | int rv; |
1da177e4 LT |
631 | |
632 | printk ("Copyright (C) 2004 MontaVista Software -" | |
1fdd75bd | 633 | " IPMI Powerdown via sys_reboot.\n"); |
1da177e4 | 634 | |
8c702e16 CM |
635 | if (poweroff_powercycle) |
636 | printk(KERN_INFO PFX "Power cycle is enabled.\n"); | |
3b625943 | 637 | |
8c702e16 CM |
638 | #ifdef CONFIG_PROC_FS |
639 | ipmi_table_header = register_sysctl_table(ipmi_root_table, 1); | |
640 | if (!ipmi_table_header) { | |
641 | printk(KERN_ERR PFX "Unable to register powercycle sysctl\n"); | |
642 | rv = -ENOMEM; | |
643 | goto out_err; | |
3b625943 | 644 | } |
8c702e16 | 645 | #endif |
3b625943 | 646 | |
1da177e4 | 647 | rv = ipmi_smi_watcher_register(&smi_watcher); |
be4f1bb2 AB |
648 | |
649 | #ifdef CONFIG_PROC_FS | |
3b625943 | 650 | if (rv) { |
8c702e16 | 651 | unregister_sysctl_table(ipmi_table_header); |
1da177e4 | 652 | printk(KERN_ERR PFX "Unable to register SMI watcher: %d\n", rv); |
3b625943 CM |
653 | goto out_err; |
654 | } | |
be4f1bb2 | 655 | #endif |
3b625943 | 656 | |
3b625943 | 657 | out_err: |
1da177e4 LT |
658 | return rv; |
659 | } | |
660 | ||
661 | #ifdef MODULE | |
662 | static __exit void ipmi_poweroff_cleanup(void) | |
663 | { | |
664 | int rv; | |
665 | ||
3b625943 | 666 | #ifdef CONFIG_PROC_FS |
8c702e16 | 667 | unregister_sysctl_table(ipmi_table_header); |
3b625943 CM |
668 | #endif |
669 | ||
1da177e4 LT |
670 | ipmi_smi_watcher_unregister(&smi_watcher); |
671 | ||
672 | if (ready) { | |
673 | rv = ipmi_destroy_user(ipmi_user); | |
674 | if (rv) | |
675 | printk(KERN_ERR PFX "could not cleanup the IPMI" | |
676 | " user: 0x%x\n", rv); | |
677 | pm_power_off = old_poweroff_func; | |
678 | } | |
679 | } | |
680 | module_exit(ipmi_poweroff_cleanup); | |
681 | #endif | |
682 | ||
683 | module_init(ipmi_poweroff_init); | |
684 | MODULE_LICENSE("GPL"); | |
1fdd75bd CM |
685 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
686 | MODULE_DESCRIPTION("IPMI Poweroff extension to sys_reboot"); |