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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> | |
5a0e3ad6 | 28 | #include <linux/slab.h> |
57c7c3a0 DW |
29 | |
30 | #define REFRESH_INTERVAL (2 * HZ) | |
31 | #define DRVNAME "ibmpex" | |
32 | ||
33 | #define PEX_GET_VERSION 1 | |
34 | #define PEX_GET_SENSOR_COUNT 2 | |
35 | #define PEX_GET_SENSOR_NAME 3 | |
36 | #define PEX_RESET_HIGH_LOW 4 | |
37 | #define PEX_GET_SENSOR_DATA 6 | |
38 | ||
39 | #define PEX_NET_FUNCTION 0x3A | |
40 | #define PEX_COMMAND 0x3C | |
41 | ||
42 | static inline u16 extract_value(const char *data, int offset) | |
43 | { | |
29041b4b | 44 | return be16_to_cpup((__be16 *)&data[offset]); |
57c7c3a0 DW |
45 | } |
46 | ||
47 | #define TEMP_SENSOR 1 | |
48 | #define POWER_SENSOR 2 | |
49 | ||
50 | #define PEX_SENSOR_TYPE_LEN 3 | |
51 | static u8 const power_sensor_sig[] = {0x70, 0x77, 0x72}; | |
52 | static u8 const temp_sensor_sig[] = {0x74, 0x65, 0x6D}; | |
53 | ||
54 | #define PEX_MULT_LEN 2 | |
55 | static u8 const watt_sensor_sig[] = {0x41, 0x43}; | |
56 | ||
57 | #define PEX_NUM_SENSOR_FUNCS 3 | |
58 | static char const * const power_sensor_name_templates[] = { | |
59 | "%s%d_average", | |
60 | "%s%d_average_lowest", | |
61 | "%s%d_average_highest" | |
62 | }; | |
63 | static char const * const temp_sensor_name_templates[] = { | |
64 | "%s%d_input", | |
65 | "%s%d_input_lowest", | |
66 | "%s%d_input_highest" | |
67 | }; | |
68 | ||
69 | static void ibmpex_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data); | |
70 | static void ibmpex_register_bmc(int iface, struct device *dev); | |
71 | static void ibmpex_bmc_gone(int iface); | |
72 | ||
73 | struct ibmpex_sensor_data { | |
74 | int in_use; | |
75 | s16 values[PEX_NUM_SENSOR_FUNCS]; | |
76 | int multiplier; | |
77 | ||
78 | struct sensor_device_attribute_2 attr[PEX_NUM_SENSOR_FUNCS]; | |
79 | }; | |
80 | ||
81 | struct ibmpex_bmc_data { | |
82 | struct list_head list; | |
83 | struct device *hwmon_dev; | |
84 | struct device *bmc_device; | |
85 | struct mutex lock; | |
86 | char valid; | |
87 | unsigned long last_updated; /* In jiffies */ | |
88 | ||
89 | struct ipmi_addr address; | |
90 | struct completion read_complete; | |
91 | ipmi_user_t user; | |
92 | int interface; | |
93 | ||
94 | struct kernel_ipmi_msg tx_message; | |
95 | unsigned char tx_msg_data[IPMI_MAX_MSG_LENGTH]; | |
96 | long tx_msgid; | |
97 | ||
98 | unsigned char rx_msg_data[IPMI_MAX_MSG_LENGTH]; | |
99 | unsigned long rx_msg_len; | |
100 | unsigned char rx_result; | |
101 | int rx_recv_type; | |
102 | ||
103 | unsigned char sensor_major; | |
104 | unsigned char sensor_minor; | |
105 | ||
106 | unsigned char num_sensors; | |
107 | struct ibmpex_sensor_data *sensors; | |
108 | }; | |
109 | ||
110 | struct ibmpex_driver_data { | |
111 | struct list_head bmc_data; | |
112 | struct ipmi_smi_watcher bmc_events; | |
113 | struct ipmi_user_hndl ipmi_hndlrs; | |
114 | }; | |
115 | ||
116 | static struct ibmpex_driver_data driver_data = { | |
117 | .bmc_data = LIST_HEAD_INIT(driver_data.bmc_data), | |
118 | .bmc_events = { | |
119 | .owner = THIS_MODULE, | |
120 | .new_smi = ibmpex_register_bmc, | |
121 | .smi_gone = ibmpex_bmc_gone, | |
122 | }, | |
123 | .ipmi_hndlrs = { | |
124 | .ipmi_recv_hndl = ibmpex_msg_handler, | |
125 | }, | |
126 | }; | |
127 | ||
128 | static int ibmpex_send_message(struct ibmpex_bmc_data *data) | |
129 | { | |
130 | int err; | |
131 | ||
132 | err = ipmi_validate_addr(&data->address, sizeof(data->address)); | |
133 | if (err) | |
134 | goto out; | |
135 | ||
136 | data->tx_msgid++; | |
137 | err = ipmi_request_settime(data->user, &data->address, data->tx_msgid, | |
138 | &data->tx_message, data, 0, 0, 0); | |
139 | if (err) | |
140 | goto out1; | |
141 | ||
142 | return 0; | |
143 | out1: | |
2ecb044e | 144 | dev_err(data->bmc_device, "request_settime=%x\n", err); |
57c7c3a0 DW |
145 | return err; |
146 | out: | |
2ecb044e | 147 | dev_err(data->bmc_device, "validate_addr=%x\n", err); |
57c7c3a0 DW |
148 | return err; |
149 | } | |
150 | ||
151 | static int ibmpex_ver_check(struct ibmpex_bmc_data *data) | |
152 | { | |
153 | data->tx_msg_data[0] = PEX_GET_VERSION; | |
154 | data->tx_message.data_len = 1; | |
155 | ibmpex_send_message(data); | |
156 | ||
157 | wait_for_completion(&data->read_complete); | |
158 | ||
159 | if (data->rx_result || data->rx_msg_len != 6) | |
160 | return -ENOENT; | |
161 | ||
162 | data->sensor_major = data->rx_msg_data[0]; | |
163 | data->sensor_minor = data->rx_msg_data[1]; | |
164 | ||
2ecb044e DW |
165 | dev_info(data->bmc_device, "Found BMC with sensor interface " |
166 | "v%d.%d %d-%02d-%02d on interface %d\n", | |
167 | data->sensor_major, | |
168 | data->sensor_minor, | |
169 | extract_value(data->rx_msg_data, 2), | |
170 | data->rx_msg_data[4], | |
171 | data->rx_msg_data[5], | |
172 | data->interface); | |
57c7c3a0 DW |
173 | |
174 | return 0; | |
175 | } | |
176 | ||
177 | static int ibmpex_query_sensor_count(struct ibmpex_bmc_data *data) | |
178 | { | |
179 | data->tx_msg_data[0] = PEX_GET_SENSOR_COUNT; | |
180 | data->tx_message.data_len = 1; | |
181 | ibmpex_send_message(data); | |
182 | ||
183 | wait_for_completion(&data->read_complete); | |
184 | ||
185 | if (data->rx_result || data->rx_msg_len != 1) | |
186 | return -ENOENT; | |
187 | ||
188 | return data->rx_msg_data[0]; | |
189 | } | |
190 | ||
191 | static int ibmpex_query_sensor_name(struct ibmpex_bmc_data *data, int sensor) | |
192 | { | |
193 | data->tx_msg_data[0] = PEX_GET_SENSOR_NAME; | |
194 | data->tx_msg_data[1] = sensor; | |
195 | data->tx_message.data_len = 2; | |
196 | ibmpex_send_message(data); | |
197 | ||
198 | wait_for_completion(&data->read_complete); | |
199 | ||
200 | if (data->rx_result || data->rx_msg_len < 1) | |
201 | return -ENOENT; | |
202 | ||
203 | return 0; | |
204 | } | |
205 | ||
206 | static int ibmpex_query_sensor_data(struct ibmpex_bmc_data *data, int sensor) | |
207 | { | |
208 | data->tx_msg_data[0] = PEX_GET_SENSOR_DATA; | |
209 | data->tx_msg_data[1] = sensor; | |
210 | data->tx_message.data_len = 2; | |
211 | ibmpex_send_message(data); | |
212 | ||
213 | wait_for_completion(&data->read_complete); | |
214 | ||
215 | if (data->rx_result || data->rx_msg_len < 26) { | |
2ecb044e DW |
216 | dev_err(data->bmc_device, "Error reading sensor %d.\n", |
217 | sensor); | |
57c7c3a0 DW |
218 | return -ENOENT; |
219 | } | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
224 | static int ibmpex_reset_high_low_data(struct ibmpex_bmc_data *data) | |
225 | { | |
226 | data->tx_msg_data[0] = PEX_RESET_HIGH_LOW; | |
227 | data->tx_message.data_len = 1; | |
228 | ibmpex_send_message(data); | |
229 | ||
230 | wait_for_completion(&data->read_complete); | |
231 | ||
232 | return 0; | |
233 | } | |
234 | ||
235 | static void ibmpex_update_device(struct ibmpex_bmc_data *data) | |
236 | { | |
237 | int i, err; | |
238 | ||
239 | mutex_lock(&data->lock); | |
240 | if (time_before(jiffies, data->last_updated + REFRESH_INTERVAL) && | |
241 | data->valid) | |
242 | goto out; | |
243 | ||
244 | for (i = 0; i < data->num_sensors; i++) { | |
245 | if (!data->sensors[i].in_use) | |
246 | continue; | |
247 | err = ibmpex_query_sensor_data(data, i); | |
248 | if (err) | |
249 | continue; | |
250 | data->sensors[i].values[0] = | |
251 | extract_value(data->rx_msg_data, 16); | |
252 | data->sensors[i].values[1] = | |
253 | extract_value(data->rx_msg_data, 18); | |
254 | data->sensors[i].values[2] = | |
255 | extract_value(data->rx_msg_data, 20); | |
256 | } | |
257 | ||
258 | data->last_updated = jiffies; | |
259 | data->valid = 1; | |
260 | ||
261 | out: | |
262 | mutex_unlock(&data->lock); | |
263 | } | |
264 | ||
265 | static struct ibmpex_bmc_data *get_bmc_data(int iface) | |
266 | { | |
267 | struct ibmpex_bmc_data *p, *next; | |
268 | ||
269 | list_for_each_entry_safe(p, next, &driver_data.bmc_data, list) | |
270 | if (p->interface == iface) | |
271 | return p; | |
272 | ||
273 | return NULL; | |
274 | } | |
275 | ||
276 | static ssize_t show_name(struct device *dev, struct device_attribute *devattr, | |
277 | char *buf) | |
278 | { | |
279 | return sprintf(buf, "%s\n", DRVNAME); | |
280 | } | |
281 | static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0); | |
282 | ||
283 | static ssize_t ibmpex_show_sensor(struct device *dev, | |
284 | struct device_attribute *devattr, | |
285 | char *buf) | |
286 | { | |
287 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
288 | struct ibmpex_bmc_data *data = dev_get_drvdata(dev); | |
289 | int mult = data->sensors[attr->index].multiplier; | |
290 | ibmpex_update_device(data); | |
291 | ||
292 | return sprintf(buf, "%d\n", | |
293 | data->sensors[attr->index].values[attr->nr] * mult); | |
294 | } | |
295 | ||
296 | static ssize_t ibmpex_reset_high_low(struct device *dev, | |
297 | struct device_attribute *devattr, | |
298 | const char *buf, | |
299 | size_t count) | |
300 | { | |
301 | struct ibmpex_bmc_data *data = dev_get_drvdata(dev); | |
302 | ||
303 | ibmpex_reset_high_low_data(data); | |
304 | ||
305 | return count; | |
306 | } | |
307 | ||
308 | static SENSOR_DEVICE_ATTR(reset_high_low, S_IWUSR, NULL, | |
309 | ibmpex_reset_high_low, 0); | |
310 | ||
311 | static int is_power_sensor(const char *sensor_id, int len) | |
312 | { | |
313 | if (len < PEX_SENSOR_TYPE_LEN) | |
314 | return 0; | |
315 | ||
316 | if (!memcmp(sensor_id, power_sensor_sig, PEX_SENSOR_TYPE_LEN)) | |
317 | return 1; | |
318 | return 0; | |
319 | } | |
320 | ||
321 | static int is_temp_sensor(const char *sensor_id, int len) | |
322 | { | |
323 | if (len < PEX_SENSOR_TYPE_LEN) | |
324 | return 0; | |
325 | ||
326 | if (!memcmp(sensor_id, temp_sensor_sig, PEX_SENSOR_TYPE_LEN)) | |
327 | return 1; | |
328 | return 0; | |
329 | } | |
330 | ||
df9cb033 DW |
331 | static int power_sensor_multiplier(struct ibmpex_bmc_data *data, |
332 | const char *sensor_id, int len) | |
57c7c3a0 DW |
333 | { |
334 | int i; | |
335 | ||
df9cb033 DW |
336 | if (data->sensor_major == 2) |
337 | return 1000000; | |
338 | ||
57c7c3a0 DW |
339 | for (i = PEX_SENSOR_TYPE_LEN; i < len - 1; i++) |
340 | if (!memcmp(&sensor_id[i], watt_sensor_sig, PEX_MULT_LEN)) | |
341 | return 1000000; | |
342 | ||
343 | return 100000; | |
344 | } | |
345 | ||
346 | static int create_sensor(struct ibmpex_bmc_data *data, int type, | |
347 | int counter, int sensor, int func) | |
348 | { | |
349 | int err; | |
350 | char *n; | |
351 | ||
352 | n = kmalloc(32, GFP_KERNEL); | |
353 | if (!n) | |
354 | return -ENOMEM; | |
355 | ||
356 | if (type == TEMP_SENSOR) | |
357 | sprintf(n, temp_sensor_name_templates[func], "temp", counter); | |
358 | else if (type == POWER_SENSOR) | |
359 | sprintf(n, power_sensor_name_templates[func], "power", counter); | |
360 | ||
fb794e0f | 361 | sysfs_attr_init(&data->sensors[sensor].attr[func].dev_attr.attr); |
57c7c3a0 DW |
362 | data->sensors[sensor].attr[func].dev_attr.attr.name = n; |
363 | data->sensors[sensor].attr[func].dev_attr.attr.mode = S_IRUGO; | |
364 | data->sensors[sensor].attr[func].dev_attr.show = ibmpex_show_sensor; | |
365 | data->sensors[sensor].attr[func].index = sensor; | |
366 | data->sensors[sensor].attr[func].nr = func; | |
367 | ||
368 | err = device_create_file(data->bmc_device, | |
369 | &data->sensors[sensor].attr[func].dev_attr); | |
370 | if (err) { | |
371 | data->sensors[sensor].attr[func].dev_attr.attr.name = NULL; | |
372 | kfree(n); | |
373 | return err; | |
374 | } | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | static int ibmpex_find_sensors(struct ibmpex_bmc_data *data) | |
380 | { | |
381 | int i, j, err; | |
382 | int sensor_type; | |
383 | int sensor_counter; | |
384 | int num_power = 0; | |
385 | int num_temp = 0; | |
386 | ||
387 | err = ibmpex_query_sensor_count(data); | |
388 | if (err <= 0) | |
389 | return -ENOENT; | |
390 | data->num_sensors = err; | |
391 | ||
392 | data->sensors = kzalloc(data->num_sensors * sizeof(*data->sensors), | |
393 | GFP_KERNEL); | |
394 | if (!data->sensors) | |
395 | return -ENOMEM; | |
396 | ||
397 | for (i = 0; i < data->num_sensors; i++) { | |
398 | err = ibmpex_query_sensor_name(data, i); | |
399 | if (err) | |
400 | continue; | |
401 | ||
402 | if (is_power_sensor(data->rx_msg_data, data->rx_msg_len)) { | |
403 | sensor_type = POWER_SENSOR; | |
404 | num_power++; | |
405 | sensor_counter = num_power; | |
406 | data->sensors[i].multiplier = | |
df9cb033 DW |
407 | power_sensor_multiplier(data, |
408 | data->rx_msg_data, | |
409 | data->rx_msg_len); | |
57c7c3a0 DW |
410 | } else if (is_temp_sensor(data->rx_msg_data, |
411 | data->rx_msg_len)) { | |
412 | sensor_type = TEMP_SENSOR; | |
413 | num_temp++; | |
414 | sensor_counter = num_temp; | |
ffda6857 | 415 | data->sensors[i].multiplier = 1000; |
57c7c3a0 DW |
416 | } else |
417 | continue; | |
418 | ||
419 | data->sensors[i].in_use = 1; | |
420 | ||
421 | /* Create attributes */ | |
422 | for (j = 0; j < PEX_NUM_SENSOR_FUNCS; j++) { | |
423 | err = create_sensor(data, sensor_type, sensor_counter, | |
424 | i, j); | |
425 | if (err) | |
426 | goto exit_remove; | |
427 | } | |
428 | } | |
429 | ||
430 | err = device_create_file(data->bmc_device, | |
431 | &sensor_dev_attr_reset_high_low.dev_attr); | |
432 | if (err) | |
433 | goto exit_remove; | |
434 | ||
435 | err = device_create_file(data->bmc_device, | |
436 | &sensor_dev_attr_name.dev_attr); | |
437 | if (err) | |
438 | goto exit_remove; | |
439 | ||
440 | return 0; | |
441 | ||
442 | exit_remove: | |
443 | device_remove_file(data->bmc_device, | |
444 | &sensor_dev_attr_reset_high_low.dev_attr); | |
445 | device_remove_file(data->bmc_device, &sensor_dev_attr_name.dev_attr); | |
446 | for (i = 0; i < data->num_sensors; i++) | |
447 | for (j = 0; j < PEX_NUM_SENSOR_FUNCS; j++) { | |
448 | if (!data->sensors[i].attr[j].dev_attr.attr.name) | |
449 | continue; | |
450 | device_remove_file(data->bmc_device, | |
451 | &data->sensors[i].attr[j].dev_attr); | |
452 | kfree(data->sensors[i].attr[j].dev_attr.attr.name); | |
453 | } | |
454 | ||
455 | kfree(data->sensors); | |
456 | return err; | |
457 | } | |
458 | ||
459 | static void ibmpex_register_bmc(int iface, struct device *dev) | |
460 | { | |
461 | struct ibmpex_bmc_data *data; | |
462 | int err; | |
463 | ||
464 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
465 | if (!data) { | |
2ecb044e | 466 | dev_err(dev, "Insufficient memory for BMC interface.\n"); |
57c7c3a0 DW |
467 | return; |
468 | } | |
469 | ||
470 | data->address.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
471 | data->address.channel = IPMI_BMC_CHANNEL; | |
472 | data->address.data[0] = 0; | |
473 | data->interface = iface; | |
474 | data->bmc_device = dev; | |
475 | ||
476 | /* Create IPMI messaging interface user */ | |
477 | err = ipmi_create_user(data->interface, &driver_data.ipmi_hndlrs, | |
478 | data, &data->user); | |
479 | if (err < 0) { | |
2ecb044e DW |
480 | dev_err(dev, "Unable to register user with IPMI " |
481 | "interface %d\n", data->interface); | |
57c7c3a0 DW |
482 | goto out; |
483 | } | |
484 | ||
485 | mutex_init(&data->lock); | |
486 | ||
487 | /* Initialize message */ | |
488 | data->tx_msgid = 0; | |
489 | init_completion(&data->read_complete); | |
490 | data->tx_message.netfn = PEX_NET_FUNCTION; | |
491 | data->tx_message.cmd = PEX_COMMAND; | |
492 | data->tx_message.data = data->tx_msg_data; | |
493 | ||
494 | /* Does this BMC support PowerExecutive? */ | |
495 | err = ibmpex_ver_check(data); | |
496 | if (err) | |
497 | goto out_user; | |
498 | ||
499 | /* Register the BMC as a HWMON class device */ | |
500 | data->hwmon_dev = hwmon_device_register(data->bmc_device); | |
501 | ||
502 | if (IS_ERR(data->hwmon_dev)) { | |
2ecb044e DW |
503 | dev_err(data->bmc_device, "Unable to register hwmon " |
504 | "device for IPMI interface %d\n", | |
505 | data->interface); | |
4cfdbe7f | 506 | goto out_user; |
57c7c3a0 DW |
507 | } |
508 | ||
509 | /* finally add the new bmc data to the bmc data list */ | |
510 | dev_set_drvdata(dev, data); | |
511 | list_add_tail(&data->list, &driver_data.bmc_data); | |
512 | ||
513 | /* Now go find all the sensors */ | |
514 | err = ibmpex_find_sensors(data); | |
515 | if (err) { | |
2ecb044e | 516 | dev_err(data->bmc_device, "Error %d finding sensors\n", err); |
57c7c3a0 DW |
517 | goto out_register; |
518 | } | |
519 | ||
520 | return; | |
521 | ||
522 | out_register: | |
523 | hwmon_device_unregister(data->hwmon_dev); | |
524 | out_user: | |
525 | ipmi_destroy_user(data->user); | |
526 | out: | |
527 | kfree(data); | |
528 | } | |
529 | ||
530 | static void ibmpex_bmc_delete(struct ibmpex_bmc_data *data) | |
531 | { | |
532 | int i, j; | |
533 | ||
534 | device_remove_file(data->bmc_device, | |
535 | &sensor_dev_attr_reset_high_low.dev_attr); | |
536 | device_remove_file(data->bmc_device, &sensor_dev_attr_name.dev_attr); | |
537 | for (i = 0; i < data->num_sensors; i++) | |
538 | for (j = 0; j < PEX_NUM_SENSOR_FUNCS; j++) { | |
539 | if (!data->sensors[i].attr[j].dev_attr.attr.name) | |
540 | continue; | |
541 | device_remove_file(data->bmc_device, | |
542 | &data->sensors[i].attr[j].dev_attr); | |
543 | kfree(data->sensors[i].attr[j].dev_attr.attr.name); | |
544 | } | |
545 | ||
546 | list_del(&data->list); | |
547 | dev_set_drvdata(data->bmc_device, NULL); | |
548 | hwmon_device_unregister(data->hwmon_dev); | |
549 | ipmi_destroy_user(data->user); | |
550 | kfree(data->sensors); | |
551 | kfree(data); | |
552 | } | |
553 | ||
554 | static void ibmpex_bmc_gone(int iface) | |
555 | { | |
556 | struct ibmpex_bmc_data *data = get_bmc_data(iface); | |
557 | ||
558 | if (!data) | |
559 | return; | |
560 | ||
561 | ibmpex_bmc_delete(data); | |
562 | } | |
563 | ||
564 | static void ibmpex_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data) | |
565 | { | |
566 | struct ibmpex_bmc_data *data = (struct ibmpex_bmc_data *)user_msg_data; | |
567 | ||
568 | if (msg->msgid != data->tx_msgid) { | |
2ecb044e DW |
569 | dev_err(data->bmc_device, "Mismatch between received msgid " |
570 | "(%02x) and transmitted msgid (%02x)!\n", | |
571 | (int)msg->msgid, | |
572 | (int)data->tx_msgid); | |
57c7c3a0 DW |
573 | ipmi_free_recv_msg(msg); |
574 | return; | |
575 | } | |
576 | ||
577 | data->rx_recv_type = msg->recv_type; | |
578 | if (msg->msg.data_len > 0) | |
579 | data->rx_result = msg->msg.data[0]; | |
580 | else | |
581 | data->rx_result = IPMI_UNKNOWN_ERR_COMPLETION_CODE; | |
582 | ||
583 | if (msg->msg.data_len > 1) { | |
584 | data->rx_msg_len = msg->msg.data_len - 1; | |
585 | memcpy(data->rx_msg_data, msg->msg.data + 1, data->rx_msg_len); | |
586 | } else | |
587 | data->rx_msg_len = 0; | |
588 | ||
589 | ipmi_free_recv_msg(msg); | |
590 | complete(&data->read_complete); | |
591 | } | |
592 | ||
593 | static int __init ibmpex_init(void) | |
594 | { | |
595 | return ipmi_smi_watcher_register(&driver_data.bmc_events); | |
596 | } | |
597 | ||
598 | static void __exit ibmpex_exit(void) | |
599 | { | |
600 | struct ibmpex_bmc_data *p, *next; | |
601 | ||
602 | ipmi_smi_watcher_unregister(&driver_data.bmc_events); | |
603 | list_for_each_entry_safe(p, next, &driver_data.bmc_data, list) | |
604 | ibmpex_bmc_delete(p); | |
605 | } | |
606 | ||
607 | MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>"); | |
608 | MODULE_DESCRIPTION("IBM PowerExecutive power/temperature sensor driver"); | |
609 | MODULE_LICENSE("GPL"); | |
610 | ||
611 | module_init(ibmpex_init); | |
612 | module_exit(ibmpex_exit); | |
ff921361 DW |
613 | |
614 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3350-*"); | |
615 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3550-*"); | |
616 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3650-*"); | |
617 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3655-*"); | |
618 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3755-*"); |