Commit | Line | Data |
---|---|---|
57c7c3a0 DW |
1 | /* |
2 | * A hwmon driver for the IBM PowerExecutive temperature/power sensors | |
3 | * Copyright (C) 2007 IBM | |
4 | * | |
5 | * Author: Darrick J. Wong <djwong@us.ibm.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
22 | #include <linux/ipmi.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/hwmon.h> | |
25 | #include <linux/hwmon-sysfs.h> | |
26 | #include <linux/jiffies.h> | |
27 | #include <linux/mutex.h> | |
28 | ||
29 | #define REFRESH_INTERVAL (2 * HZ) | |
30 | #define DRVNAME "ibmpex" | |
31 | ||
32 | #define PEX_GET_VERSION 1 | |
33 | #define PEX_GET_SENSOR_COUNT 2 | |
34 | #define PEX_GET_SENSOR_NAME 3 | |
35 | #define PEX_RESET_HIGH_LOW 4 | |
36 | #define PEX_GET_SENSOR_DATA 6 | |
37 | ||
38 | #define PEX_NET_FUNCTION 0x3A | |
39 | #define PEX_COMMAND 0x3C | |
40 | ||
41 | static inline u16 extract_value(const char *data, int offset) | |
42 | { | |
29041b4b | 43 | return be16_to_cpup((__be16 *)&data[offset]); |
57c7c3a0 DW |
44 | } |
45 | ||
46 | #define TEMP_SENSOR 1 | |
47 | #define POWER_SENSOR 2 | |
48 | ||
49 | #define PEX_SENSOR_TYPE_LEN 3 | |
50 | static u8 const power_sensor_sig[] = {0x70, 0x77, 0x72}; | |
51 | static u8 const temp_sensor_sig[] = {0x74, 0x65, 0x6D}; | |
52 | ||
53 | #define PEX_MULT_LEN 2 | |
54 | static u8 const watt_sensor_sig[] = {0x41, 0x43}; | |
55 | ||
56 | #define PEX_NUM_SENSOR_FUNCS 3 | |
57 | static char const * const power_sensor_name_templates[] = { | |
58 | "%s%d_average", | |
59 | "%s%d_average_lowest", | |
60 | "%s%d_average_highest" | |
61 | }; | |
62 | static char const * const temp_sensor_name_templates[] = { | |
63 | "%s%d_input", | |
64 | "%s%d_input_lowest", | |
65 | "%s%d_input_highest" | |
66 | }; | |
67 | ||
68 | static void ibmpex_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data); | |
69 | static void ibmpex_register_bmc(int iface, struct device *dev); | |
70 | static void ibmpex_bmc_gone(int iface); | |
71 | ||
72 | struct ibmpex_sensor_data { | |
73 | int in_use; | |
74 | s16 values[PEX_NUM_SENSOR_FUNCS]; | |
75 | int multiplier; | |
76 | ||
77 | struct sensor_device_attribute_2 attr[PEX_NUM_SENSOR_FUNCS]; | |
78 | }; | |
79 | ||
80 | struct ibmpex_bmc_data { | |
81 | struct list_head list; | |
82 | struct device *hwmon_dev; | |
83 | struct device *bmc_device; | |
84 | struct mutex lock; | |
85 | char valid; | |
86 | unsigned long last_updated; /* In jiffies */ | |
87 | ||
88 | struct ipmi_addr address; | |
89 | struct completion read_complete; | |
90 | ipmi_user_t user; | |
91 | int interface; | |
92 | ||
93 | struct kernel_ipmi_msg tx_message; | |
94 | unsigned char tx_msg_data[IPMI_MAX_MSG_LENGTH]; | |
95 | long tx_msgid; | |
96 | ||
97 | unsigned char rx_msg_data[IPMI_MAX_MSG_LENGTH]; | |
98 | unsigned long rx_msg_len; | |
99 | unsigned char rx_result; | |
100 | int rx_recv_type; | |
101 | ||
102 | unsigned char sensor_major; | |
103 | unsigned char sensor_minor; | |
104 | ||
105 | unsigned char num_sensors; | |
106 | struct ibmpex_sensor_data *sensors; | |
107 | }; | |
108 | ||
109 | struct ibmpex_driver_data { | |
110 | struct list_head bmc_data; | |
111 | struct ipmi_smi_watcher bmc_events; | |
112 | struct ipmi_user_hndl ipmi_hndlrs; | |
113 | }; | |
114 | ||
115 | static struct ibmpex_driver_data driver_data = { | |
116 | .bmc_data = LIST_HEAD_INIT(driver_data.bmc_data), | |
117 | .bmc_events = { | |
118 | .owner = THIS_MODULE, | |
119 | .new_smi = ibmpex_register_bmc, | |
120 | .smi_gone = ibmpex_bmc_gone, | |
121 | }, | |
122 | .ipmi_hndlrs = { | |
123 | .ipmi_recv_hndl = ibmpex_msg_handler, | |
124 | }, | |
125 | }; | |
126 | ||
127 | static int ibmpex_send_message(struct ibmpex_bmc_data *data) | |
128 | { | |
129 | int err; | |
130 | ||
131 | err = ipmi_validate_addr(&data->address, sizeof(data->address)); | |
132 | if (err) | |
133 | goto out; | |
134 | ||
135 | data->tx_msgid++; | |
136 | err = ipmi_request_settime(data->user, &data->address, data->tx_msgid, | |
137 | &data->tx_message, data, 0, 0, 0); | |
138 | if (err) | |
139 | goto out1; | |
140 | ||
141 | return 0; | |
142 | out1: | |
2ecb044e | 143 | dev_err(data->bmc_device, "request_settime=%x\n", err); |
57c7c3a0 DW |
144 | return err; |
145 | out: | |
2ecb044e | 146 | dev_err(data->bmc_device, "validate_addr=%x\n", err); |
57c7c3a0 DW |
147 | return err; |
148 | } | |
149 | ||
150 | static int ibmpex_ver_check(struct ibmpex_bmc_data *data) | |
151 | { | |
152 | data->tx_msg_data[0] = PEX_GET_VERSION; | |
153 | data->tx_message.data_len = 1; | |
154 | ibmpex_send_message(data); | |
155 | ||
156 | wait_for_completion(&data->read_complete); | |
157 | ||
158 | if (data->rx_result || data->rx_msg_len != 6) | |
159 | return -ENOENT; | |
160 | ||
161 | data->sensor_major = data->rx_msg_data[0]; | |
162 | data->sensor_minor = data->rx_msg_data[1]; | |
163 | ||
2ecb044e DW |
164 | dev_info(data->bmc_device, "Found BMC with sensor interface " |
165 | "v%d.%d %d-%02d-%02d on interface %d\n", | |
166 | data->sensor_major, | |
167 | data->sensor_minor, | |
168 | extract_value(data->rx_msg_data, 2), | |
169 | data->rx_msg_data[4], | |
170 | data->rx_msg_data[5], | |
171 | data->interface); | |
57c7c3a0 DW |
172 | |
173 | return 0; | |
174 | } | |
175 | ||
176 | static int ibmpex_query_sensor_count(struct ibmpex_bmc_data *data) | |
177 | { | |
178 | data->tx_msg_data[0] = PEX_GET_SENSOR_COUNT; | |
179 | data->tx_message.data_len = 1; | |
180 | ibmpex_send_message(data); | |
181 | ||
182 | wait_for_completion(&data->read_complete); | |
183 | ||
184 | if (data->rx_result || data->rx_msg_len != 1) | |
185 | return -ENOENT; | |
186 | ||
187 | return data->rx_msg_data[0]; | |
188 | } | |
189 | ||
190 | static int ibmpex_query_sensor_name(struct ibmpex_bmc_data *data, int sensor) | |
191 | { | |
192 | data->tx_msg_data[0] = PEX_GET_SENSOR_NAME; | |
193 | data->tx_msg_data[1] = sensor; | |
194 | data->tx_message.data_len = 2; | |
195 | ibmpex_send_message(data); | |
196 | ||
197 | wait_for_completion(&data->read_complete); | |
198 | ||
199 | if (data->rx_result || data->rx_msg_len < 1) | |
200 | return -ENOENT; | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
205 | static int ibmpex_query_sensor_data(struct ibmpex_bmc_data *data, int sensor) | |
206 | { | |
207 | data->tx_msg_data[0] = PEX_GET_SENSOR_DATA; | |
208 | data->tx_msg_data[1] = sensor; | |
209 | data->tx_message.data_len = 2; | |
210 | ibmpex_send_message(data); | |
211 | ||
212 | wait_for_completion(&data->read_complete); | |
213 | ||
214 | if (data->rx_result || data->rx_msg_len < 26) { | |
2ecb044e DW |
215 | dev_err(data->bmc_device, "Error reading sensor %d.\n", |
216 | sensor); | |
57c7c3a0 DW |
217 | return -ENOENT; |
218 | } | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
223 | static int ibmpex_reset_high_low_data(struct ibmpex_bmc_data *data) | |
224 | { | |
225 | data->tx_msg_data[0] = PEX_RESET_HIGH_LOW; | |
226 | data->tx_message.data_len = 1; | |
227 | ibmpex_send_message(data); | |
228 | ||
229 | wait_for_completion(&data->read_complete); | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
234 | static void ibmpex_update_device(struct ibmpex_bmc_data *data) | |
235 | { | |
236 | int i, err; | |
237 | ||
238 | mutex_lock(&data->lock); | |
239 | if (time_before(jiffies, data->last_updated + REFRESH_INTERVAL) && | |
240 | data->valid) | |
241 | goto out; | |
242 | ||
243 | for (i = 0; i < data->num_sensors; i++) { | |
244 | if (!data->sensors[i].in_use) | |
245 | continue; | |
246 | err = ibmpex_query_sensor_data(data, i); | |
247 | if (err) | |
248 | continue; | |
249 | data->sensors[i].values[0] = | |
250 | extract_value(data->rx_msg_data, 16); | |
251 | data->sensors[i].values[1] = | |
252 | extract_value(data->rx_msg_data, 18); | |
253 | data->sensors[i].values[2] = | |
254 | extract_value(data->rx_msg_data, 20); | |
255 | } | |
256 | ||
257 | data->last_updated = jiffies; | |
258 | data->valid = 1; | |
259 | ||
260 | out: | |
261 | mutex_unlock(&data->lock); | |
262 | } | |
263 | ||
264 | static struct ibmpex_bmc_data *get_bmc_data(int iface) | |
265 | { | |
266 | struct ibmpex_bmc_data *p, *next; | |
267 | ||
268 | list_for_each_entry_safe(p, next, &driver_data.bmc_data, list) | |
269 | if (p->interface == iface) | |
270 | return p; | |
271 | ||
272 | return NULL; | |
273 | } | |
274 | ||
275 | static ssize_t show_name(struct device *dev, struct device_attribute *devattr, | |
276 | char *buf) | |
277 | { | |
278 | return sprintf(buf, "%s\n", DRVNAME); | |
279 | } | |
280 | static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0); | |
281 | ||
282 | static ssize_t ibmpex_show_sensor(struct device *dev, | |
283 | struct device_attribute *devattr, | |
284 | char *buf) | |
285 | { | |
286 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
287 | struct ibmpex_bmc_data *data = dev_get_drvdata(dev); | |
288 | int mult = data->sensors[attr->index].multiplier; | |
289 | ibmpex_update_device(data); | |
290 | ||
291 | return sprintf(buf, "%d\n", | |
292 | data->sensors[attr->index].values[attr->nr] * mult); | |
293 | } | |
294 | ||
295 | static ssize_t ibmpex_reset_high_low(struct device *dev, | |
296 | struct device_attribute *devattr, | |
297 | const char *buf, | |
298 | size_t count) | |
299 | { | |
300 | struct ibmpex_bmc_data *data = dev_get_drvdata(dev); | |
301 | ||
302 | ibmpex_reset_high_low_data(data); | |
303 | ||
304 | return count; | |
305 | } | |
306 | ||
307 | static SENSOR_DEVICE_ATTR(reset_high_low, S_IWUSR, NULL, | |
308 | ibmpex_reset_high_low, 0); | |
309 | ||
310 | static int is_power_sensor(const char *sensor_id, int len) | |
311 | { | |
312 | if (len < PEX_SENSOR_TYPE_LEN) | |
313 | return 0; | |
314 | ||
315 | if (!memcmp(sensor_id, power_sensor_sig, PEX_SENSOR_TYPE_LEN)) | |
316 | return 1; | |
317 | return 0; | |
318 | } | |
319 | ||
320 | static int is_temp_sensor(const char *sensor_id, int len) | |
321 | { | |
322 | if (len < PEX_SENSOR_TYPE_LEN) | |
323 | return 0; | |
324 | ||
325 | if (!memcmp(sensor_id, temp_sensor_sig, PEX_SENSOR_TYPE_LEN)) | |
326 | return 1; | |
327 | return 0; | |
328 | } | |
329 | ||
df9cb033 DW |
330 | static int power_sensor_multiplier(struct ibmpex_bmc_data *data, |
331 | const char *sensor_id, int len) | |
57c7c3a0 DW |
332 | { |
333 | int i; | |
334 | ||
df9cb033 DW |
335 | if (data->sensor_major == 2) |
336 | return 1000000; | |
337 | ||
57c7c3a0 DW |
338 | for (i = PEX_SENSOR_TYPE_LEN; i < len - 1; i++) |
339 | if (!memcmp(&sensor_id[i], watt_sensor_sig, PEX_MULT_LEN)) | |
340 | return 1000000; | |
341 | ||
342 | return 100000; | |
343 | } | |
344 | ||
345 | static int create_sensor(struct ibmpex_bmc_data *data, int type, | |
346 | int counter, int sensor, int func) | |
347 | { | |
348 | int err; | |
349 | char *n; | |
350 | ||
351 | n = kmalloc(32, GFP_KERNEL); | |
352 | if (!n) | |
353 | return -ENOMEM; | |
354 | ||
355 | if (type == TEMP_SENSOR) | |
356 | sprintf(n, temp_sensor_name_templates[func], "temp", counter); | |
357 | else if (type == POWER_SENSOR) | |
358 | sprintf(n, power_sensor_name_templates[func], "power", counter); | |
359 | ||
360 | data->sensors[sensor].attr[func].dev_attr.attr.name = n; | |
361 | data->sensors[sensor].attr[func].dev_attr.attr.mode = S_IRUGO; | |
362 | data->sensors[sensor].attr[func].dev_attr.show = ibmpex_show_sensor; | |
363 | data->sensors[sensor].attr[func].index = sensor; | |
364 | data->sensors[sensor].attr[func].nr = func; | |
365 | ||
366 | err = device_create_file(data->bmc_device, | |
367 | &data->sensors[sensor].attr[func].dev_attr); | |
368 | if (err) { | |
369 | data->sensors[sensor].attr[func].dev_attr.attr.name = NULL; | |
370 | kfree(n); | |
371 | return err; | |
372 | } | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
377 | static int ibmpex_find_sensors(struct ibmpex_bmc_data *data) | |
378 | { | |
379 | int i, j, err; | |
380 | int sensor_type; | |
381 | int sensor_counter; | |
382 | int num_power = 0; | |
383 | int num_temp = 0; | |
384 | ||
385 | err = ibmpex_query_sensor_count(data); | |
386 | if (err <= 0) | |
387 | return -ENOENT; | |
388 | data->num_sensors = err; | |
389 | ||
390 | data->sensors = kzalloc(data->num_sensors * sizeof(*data->sensors), | |
391 | GFP_KERNEL); | |
392 | if (!data->sensors) | |
393 | return -ENOMEM; | |
394 | ||
395 | for (i = 0; i < data->num_sensors; i++) { | |
396 | err = ibmpex_query_sensor_name(data, i); | |
397 | if (err) | |
398 | continue; | |
399 | ||
400 | if (is_power_sensor(data->rx_msg_data, data->rx_msg_len)) { | |
401 | sensor_type = POWER_SENSOR; | |
402 | num_power++; | |
403 | sensor_counter = num_power; | |
404 | data->sensors[i].multiplier = | |
df9cb033 DW |
405 | power_sensor_multiplier(data, |
406 | data->rx_msg_data, | |
407 | data->rx_msg_len); | |
57c7c3a0 DW |
408 | } else if (is_temp_sensor(data->rx_msg_data, |
409 | data->rx_msg_len)) { | |
410 | sensor_type = TEMP_SENSOR; | |
411 | num_temp++; | |
412 | sensor_counter = num_temp; | |
ffda6857 | 413 | data->sensors[i].multiplier = 1000; |
57c7c3a0 DW |
414 | } else |
415 | continue; | |
416 | ||
417 | data->sensors[i].in_use = 1; | |
418 | ||
419 | /* Create attributes */ | |
420 | for (j = 0; j < PEX_NUM_SENSOR_FUNCS; j++) { | |
421 | err = create_sensor(data, sensor_type, sensor_counter, | |
422 | i, j); | |
423 | if (err) | |
424 | goto exit_remove; | |
425 | } | |
426 | } | |
427 | ||
428 | err = device_create_file(data->bmc_device, | |
429 | &sensor_dev_attr_reset_high_low.dev_attr); | |
430 | if (err) | |
431 | goto exit_remove; | |
432 | ||
433 | err = device_create_file(data->bmc_device, | |
434 | &sensor_dev_attr_name.dev_attr); | |
435 | if (err) | |
436 | goto exit_remove; | |
437 | ||
438 | return 0; | |
439 | ||
440 | exit_remove: | |
441 | device_remove_file(data->bmc_device, | |
442 | &sensor_dev_attr_reset_high_low.dev_attr); | |
443 | device_remove_file(data->bmc_device, &sensor_dev_attr_name.dev_attr); | |
444 | for (i = 0; i < data->num_sensors; i++) | |
445 | for (j = 0; j < PEX_NUM_SENSOR_FUNCS; j++) { | |
446 | if (!data->sensors[i].attr[j].dev_attr.attr.name) | |
447 | continue; | |
448 | device_remove_file(data->bmc_device, | |
449 | &data->sensors[i].attr[j].dev_attr); | |
450 | kfree(data->sensors[i].attr[j].dev_attr.attr.name); | |
451 | } | |
452 | ||
453 | kfree(data->sensors); | |
454 | return err; | |
455 | } | |
456 | ||
457 | static void ibmpex_register_bmc(int iface, struct device *dev) | |
458 | { | |
459 | struct ibmpex_bmc_data *data; | |
460 | int err; | |
461 | ||
462 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
463 | if (!data) { | |
2ecb044e | 464 | dev_err(dev, "Insufficient memory for BMC interface.\n"); |
57c7c3a0 DW |
465 | return; |
466 | } | |
467 | ||
468 | data->address.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
469 | data->address.channel = IPMI_BMC_CHANNEL; | |
470 | data->address.data[0] = 0; | |
471 | data->interface = iface; | |
472 | data->bmc_device = dev; | |
473 | ||
474 | /* Create IPMI messaging interface user */ | |
475 | err = ipmi_create_user(data->interface, &driver_data.ipmi_hndlrs, | |
476 | data, &data->user); | |
477 | if (err < 0) { | |
2ecb044e DW |
478 | dev_err(dev, "Unable to register user with IPMI " |
479 | "interface %d\n", data->interface); | |
57c7c3a0 DW |
480 | goto out; |
481 | } | |
482 | ||
483 | mutex_init(&data->lock); | |
484 | ||
485 | /* Initialize message */ | |
486 | data->tx_msgid = 0; | |
487 | init_completion(&data->read_complete); | |
488 | data->tx_message.netfn = PEX_NET_FUNCTION; | |
489 | data->tx_message.cmd = PEX_COMMAND; | |
490 | data->tx_message.data = data->tx_msg_data; | |
491 | ||
492 | /* Does this BMC support PowerExecutive? */ | |
493 | err = ibmpex_ver_check(data); | |
494 | if (err) | |
495 | goto out_user; | |
496 | ||
497 | /* Register the BMC as a HWMON class device */ | |
498 | data->hwmon_dev = hwmon_device_register(data->bmc_device); | |
499 | ||
500 | if (IS_ERR(data->hwmon_dev)) { | |
2ecb044e DW |
501 | dev_err(data->bmc_device, "Unable to register hwmon " |
502 | "device for IPMI interface %d\n", | |
503 | data->interface); | |
4cfdbe7f | 504 | goto out_user; |
57c7c3a0 DW |
505 | } |
506 | ||
507 | /* finally add the new bmc data to the bmc data list */ | |
508 | dev_set_drvdata(dev, data); | |
509 | list_add_tail(&data->list, &driver_data.bmc_data); | |
510 | ||
511 | /* Now go find all the sensors */ | |
512 | err = ibmpex_find_sensors(data); | |
513 | if (err) { | |
2ecb044e | 514 | dev_err(data->bmc_device, "Error %d finding sensors\n", err); |
57c7c3a0 DW |
515 | goto out_register; |
516 | } | |
517 | ||
518 | return; | |
519 | ||
520 | out_register: | |
521 | hwmon_device_unregister(data->hwmon_dev); | |
522 | out_user: | |
523 | ipmi_destroy_user(data->user); | |
524 | out: | |
525 | kfree(data); | |
526 | } | |
527 | ||
528 | static void ibmpex_bmc_delete(struct ibmpex_bmc_data *data) | |
529 | { | |
530 | int i, j; | |
531 | ||
532 | device_remove_file(data->bmc_device, | |
533 | &sensor_dev_attr_reset_high_low.dev_attr); | |
534 | device_remove_file(data->bmc_device, &sensor_dev_attr_name.dev_attr); | |
535 | for (i = 0; i < data->num_sensors; i++) | |
536 | for (j = 0; j < PEX_NUM_SENSOR_FUNCS; j++) { | |
537 | if (!data->sensors[i].attr[j].dev_attr.attr.name) | |
538 | continue; | |
539 | device_remove_file(data->bmc_device, | |
540 | &data->sensors[i].attr[j].dev_attr); | |
541 | kfree(data->sensors[i].attr[j].dev_attr.attr.name); | |
542 | } | |
543 | ||
544 | list_del(&data->list); | |
545 | dev_set_drvdata(data->bmc_device, NULL); | |
546 | hwmon_device_unregister(data->hwmon_dev); | |
547 | ipmi_destroy_user(data->user); | |
548 | kfree(data->sensors); | |
549 | kfree(data); | |
550 | } | |
551 | ||
552 | static void ibmpex_bmc_gone(int iface) | |
553 | { | |
554 | struct ibmpex_bmc_data *data = get_bmc_data(iface); | |
555 | ||
556 | if (!data) | |
557 | return; | |
558 | ||
559 | ibmpex_bmc_delete(data); | |
560 | } | |
561 | ||
562 | static void ibmpex_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data) | |
563 | { | |
564 | struct ibmpex_bmc_data *data = (struct ibmpex_bmc_data *)user_msg_data; | |
565 | ||
566 | if (msg->msgid != data->tx_msgid) { | |
2ecb044e DW |
567 | dev_err(data->bmc_device, "Mismatch between received msgid " |
568 | "(%02x) and transmitted msgid (%02x)!\n", | |
569 | (int)msg->msgid, | |
570 | (int)data->tx_msgid); | |
57c7c3a0 DW |
571 | ipmi_free_recv_msg(msg); |
572 | return; | |
573 | } | |
574 | ||
575 | data->rx_recv_type = msg->recv_type; | |
576 | if (msg->msg.data_len > 0) | |
577 | data->rx_result = msg->msg.data[0]; | |
578 | else | |
579 | data->rx_result = IPMI_UNKNOWN_ERR_COMPLETION_CODE; | |
580 | ||
581 | if (msg->msg.data_len > 1) { | |
582 | data->rx_msg_len = msg->msg.data_len - 1; | |
583 | memcpy(data->rx_msg_data, msg->msg.data + 1, data->rx_msg_len); | |
584 | } else | |
585 | data->rx_msg_len = 0; | |
586 | ||
587 | ipmi_free_recv_msg(msg); | |
588 | complete(&data->read_complete); | |
589 | } | |
590 | ||
591 | static int __init ibmpex_init(void) | |
592 | { | |
593 | return ipmi_smi_watcher_register(&driver_data.bmc_events); | |
594 | } | |
595 | ||
596 | static void __exit ibmpex_exit(void) | |
597 | { | |
598 | struct ibmpex_bmc_data *p, *next; | |
599 | ||
600 | ipmi_smi_watcher_unregister(&driver_data.bmc_events); | |
601 | list_for_each_entry_safe(p, next, &driver_data.bmc_data, list) | |
602 | ibmpex_bmc_delete(p); | |
603 | } | |
604 | ||
605 | MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>"); | |
606 | MODULE_DESCRIPTION("IBM PowerExecutive power/temperature sensor driver"); | |
607 | MODULE_LICENSE("GPL"); | |
608 | ||
609 | module_init(ibmpex_init); | |
610 | module_exit(ibmpex_exit); | |
ff921361 DW |
611 | |
612 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3350-*"); | |
613 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3550-*"); | |
614 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3650-*"); | |
615 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3655-*"); | |
616 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3755-*"); |