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Commit | Line | Data |
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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
57c7c3a0 DW |
2 | /* |
3 | * A hwmon driver for the IBM PowerExecutive temperature/power sensors | |
4 | * Copyright (C) 2007 IBM | |
5 | * | |
5407e051 | 6 | * Author: Darrick J. Wong <darrick.wong@oracle.com> |
57c7c3a0 DW |
7 | */ |
8 | ||
9 | #include <linux/ipmi.h> | |
10 | #include <linux/module.h> | |
11 | #include <linux/hwmon.h> | |
12 | #include <linux/hwmon-sysfs.h> | |
13 | #include <linux/jiffies.h> | |
14 | #include <linux/mutex.h> | |
5a0e3ad6 | 15 | #include <linux/slab.h> |
fa845740 | 16 | #include <linux/err.h> |
57c7c3a0 DW |
17 | |
18 | #define REFRESH_INTERVAL (2 * HZ) | |
19 | #define DRVNAME "ibmpex" | |
20 | ||
21 | #define PEX_GET_VERSION 1 | |
22 | #define PEX_GET_SENSOR_COUNT 2 | |
23 | #define PEX_GET_SENSOR_NAME 3 | |
24 | #define PEX_RESET_HIGH_LOW 4 | |
25 | #define PEX_GET_SENSOR_DATA 6 | |
26 | ||
27 | #define PEX_NET_FUNCTION 0x3A | |
28 | #define PEX_COMMAND 0x3C | |
29 | ||
30 | static inline u16 extract_value(const char *data, int offset) | |
31 | { | |
29041b4b | 32 | return be16_to_cpup((__be16 *)&data[offset]); |
57c7c3a0 DW |
33 | } |
34 | ||
35 | #define TEMP_SENSOR 1 | |
36 | #define POWER_SENSOR 2 | |
37 | ||
38 | #define PEX_SENSOR_TYPE_LEN 3 | |
39 | static u8 const power_sensor_sig[] = {0x70, 0x77, 0x72}; | |
40 | static u8 const temp_sensor_sig[] = {0x74, 0x65, 0x6D}; | |
41 | ||
42 | #define PEX_MULT_LEN 2 | |
43 | static u8 const watt_sensor_sig[] = {0x41, 0x43}; | |
44 | ||
45 | #define PEX_NUM_SENSOR_FUNCS 3 | |
a0fc74d4 RV |
46 | static const char * const sensor_name_suffixes[] = { |
47 | "", | |
48 | "_lowest", | |
49 | "_highest" | |
57c7c3a0 DW |
50 | }; |
51 | ||
52 | static void ibmpex_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data); | |
53 | static void ibmpex_register_bmc(int iface, struct device *dev); | |
54 | static void ibmpex_bmc_gone(int iface); | |
55 | ||
56 | struct ibmpex_sensor_data { | |
57 | int in_use; | |
58 | s16 values[PEX_NUM_SENSOR_FUNCS]; | |
59 | int multiplier; | |
60 | ||
61 | struct sensor_device_attribute_2 attr[PEX_NUM_SENSOR_FUNCS]; | |
62 | }; | |
63 | ||
64 | struct ibmpex_bmc_data { | |
65 | struct list_head list; | |
66 | struct device *hwmon_dev; | |
67 | struct device *bmc_device; | |
68 | struct mutex lock; | |
69 | char valid; | |
70 | unsigned long last_updated; /* In jiffies */ | |
71 | ||
72 | struct ipmi_addr address; | |
73 | struct completion read_complete; | |
3f901c86 | 74 | struct ipmi_user *user; |
57c7c3a0 DW |
75 | int interface; |
76 | ||
77 | struct kernel_ipmi_msg tx_message; | |
78 | unsigned char tx_msg_data[IPMI_MAX_MSG_LENGTH]; | |
79 | long tx_msgid; | |
80 | ||
81 | unsigned char rx_msg_data[IPMI_MAX_MSG_LENGTH]; | |
82 | unsigned long rx_msg_len; | |
83 | unsigned char rx_result; | |
84 | int rx_recv_type; | |
85 | ||
86 | unsigned char sensor_major; | |
87 | unsigned char sensor_minor; | |
88 | ||
89 | unsigned char num_sensors; | |
90 | struct ibmpex_sensor_data *sensors; | |
91 | }; | |
92 | ||
93 | struct ibmpex_driver_data { | |
94 | struct list_head bmc_data; | |
95 | struct ipmi_smi_watcher bmc_events; | |
96 | struct ipmi_user_hndl ipmi_hndlrs; | |
97 | }; | |
98 | ||
99 | static struct ibmpex_driver_data driver_data = { | |
100 | .bmc_data = LIST_HEAD_INIT(driver_data.bmc_data), | |
101 | .bmc_events = { | |
102 | .owner = THIS_MODULE, | |
103 | .new_smi = ibmpex_register_bmc, | |
104 | .smi_gone = ibmpex_bmc_gone, | |
105 | }, | |
106 | .ipmi_hndlrs = { | |
107 | .ipmi_recv_hndl = ibmpex_msg_handler, | |
108 | }, | |
109 | }; | |
110 | ||
111 | static int ibmpex_send_message(struct ibmpex_bmc_data *data) | |
112 | { | |
113 | int err; | |
114 | ||
115 | err = ipmi_validate_addr(&data->address, sizeof(data->address)); | |
116 | if (err) | |
117 | goto out; | |
118 | ||
119 | data->tx_msgid++; | |
120 | err = ipmi_request_settime(data->user, &data->address, data->tx_msgid, | |
121 | &data->tx_message, data, 0, 0, 0); | |
122 | if (err) | |
123 | goto out1; | |
124 | ||
125 | return 0; | |
126 | out1: | |
2ecb044e | 127 | dev_err(data->bmc_device, "request_settime=%x\n", err); |
57c7c3a0 DW |
128 | return err; |
129 | out: | |
2ecb044e | 130 | dev_err(data->bmc_device, "validate_addr=%x\n", err); |
57c7c3a0 DW |
131 | return err; |
132 | } | |
133 | ||
134 | static int ibmpex_ver_check(struct ibmpex_bmc_data *data) | |
135 | { | |
136 | data->tx_msg_data[0] = PEX_GET_VERSION; | |
137 | data->tx_message.data_len = 1; | |
138 | ibmpex_send_message(data); | |
139 | ||
140 | wait_for_completion(&data->read_complete); | |
141 | ||
142 | if (data->rx_result || data->rx_msg_len != 6) | |
143 | return -ENOENT; | |
144 | ||
145 | data->sensor_major = data->rx_msg_data[0]; | |
146 | data->sensor_minor = data->rx_msg_data[1]; | |
147 | ||
b55f3757 GR |
148 | dev_info(data->bmc_device, |
149 | "Found BMC with sensor interface v%d.%d %d-%02d-%02d on interface %d\n", | |
2ecb044e DW |
150 | data->sensor_major, |
151 | data->sensor_minor, | |
152 | extract_value(data->rx_msg_data, 2), | |
153 | data->rx_msg_data[4], | |
154 | data->rx_msg_data[5], | |
155 | data->interface); | |
57c7c3a0 DW |
156 | |
157 | return 0; | |
158 | } | |
159 | ||
160 | static int ibmpex_query_sensor_count(struct ibmpex_bmc_data *data) | |
161 | { | |
162 | data->tx_msg_data[0] = PEX_GET_SENSOR_COUNT; | |
163 | data->tx_message.data_len = 1; | |
164 | ibmpex_send_message(data); | |
165 | ||
166 | wait_for_completion(&data->read_complete); | |
167 | ||
168 | if (data->rx_result || data->rx_msg_len != 1) | |
169 | return -ENOENT; | |
170 | ||
171 | return data->rx_msg_data[0]; | |
172 | } | |
173 | ||
174 | static int ibmpex_query_sensor_name(struct ibmpex_bmc_data *data, int sensor) | |
175 | { | |
176 | data->tx_msg_data[0] = PEX_GET_SENSOR_NAME; | |
177 | data->tx_msg_data[1] = sensor; | |
178 | data->tx_message.data_len = 2; | |
179 | ibmpex_send_message(data); | |
180 | ||
181 | wait_for_completion(&data->read_complete); | |
182 | ||
183 | if (data->rx_result || data->rx_msg_len < 1) | |
184 | return -ENOENT; | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
189 | static int ibmpex_query_sensor_data(struct ibmpex_bmc_data *data, int sensor) | |
190 | { | |
191 | data->tx_msg_data[0] = PEX_GET_SENSOR_DATA; | |
192 | data->tx_msg_data[1] = sensor; | |
193 | data->tx_message.data_len = 2; | |
194 | ibmpex_send_message(data); | |
195 | ||
196 | wait_for_completion(&data->read_complete); | |
197 | ||
198 | if (data->rx_result || data->rx_msg_len < 26) { | |
2ecb044e DW |
199 | dev_err(data->bmc_device, "Error reading sensor %d.\n", |
200 | sensor); | |
57c7c3a0 DW |
201 | return -ENOENT; |
202 | } | |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
207 | static int ibmpex_reset_high_low_data(struct ibmpex_bmc_data *data) | |
208 | { | |
209 | data->tx_msg_data[0] = PEX_RESET_HIGH_LOW; | |
210 | data->tx_message.data_len = 1; | |
211 | ibmpex_send_message(data); | |
212 | ||
213 | wait_for_completion(&data->read_complete); | |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
218 | static void ibmpex_update_device(struct ibmpex_bmc_data *data) | |
219 | { | |
220 | int i, err; | |
221 | ||
222 | mutex_lock(&data->lock); | |
223 | if (time_before(jiffies, data->last_updated + REFRESH_INTERVAL) && | |
224 | data->valid) | |
225 | goto out; | |
226 | ||
227 | for (i = 0; i < data->num_sensors; i++) { | |
228 | if (!data->sensors[i].in_use) | |
229 | continue; | |
230 | err = ibmpex_query_sensor_data(data, i); | |
231 | if (err) | |
232 | continue; | |
233 | data->sensors[i].values[0] = | |
234 | extract_value(data->rx_msg_data, 16); | |
235 | data->sensors[i].values[1] = | |
236 | extract_value(data->rx_msg_data, 18); | |
237 | data->sensors[i].values[2] = | |
238 | extract_value(data->rx_msg_data, 20); | |
239 | } | |
240 | ||
241 | data->last_updated = jiffies; | |
242 | data->valid = 1; | |
243 | ||
244 | out: | |
245 | mutex_unlock(&data->lock); | |
246 | } | |
247 | ||
248 | static struct ibmpex_bmc_data *get_bmc_data(int iface) | |
249 | { | |
250 | struct ibmpex_bmc_data *p, *next; | |
251 | ||
252 | list_for_each_entry_safe(p, next, &driver_data.bmc_data, list) | |
253 | if (p->interface == iface) | |
254 | return p; | |
255 | ||
256 | return NULL; | |
257 | } | |
258 | ||
09cb4161 | 259 | static ssize_t name_show(struct device *dev, struct device_attribute *devattr, |
57c7c3a0 DW |
260 | char *buf) |
261 | { | |
262 | return sprintf(buf, "%s\n", DRVNAME); | |
263 | } | |
09cb4161 | 264 | static SENSOR_DEVICE_ATTR_RO(name, name, 0); |
57c7c3a0 DW |
265 | |
266 | static ssize_t ibmpex_show_sensor(struct device *dev, | |
267 | struct device_attribute *devattr, | |
268 | char *buf) | |
269 | { | |
270 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
271 | struct ibmpex_bmc_data *data = dev_get_drvdata(dev); | |
272 | int mult = data->sensors[attr->index].multiplier; | |
273 | ibmpex_update_device(data); | |
274 | ||
275 | return sprintf(buf, "%d\n", | |
276 | data->sensors[attr->index].values[attr->nr] * mult); | |
277 | } | |
278 | ||
09cb4161 | 279 | static ssize_t ibmpex_high_low_store(struct device *dev, |
57c7c3a0 | 280 | struct device_attribute *devattr, |
09cb4161 | 281 | const char *buf, size_t count) |
57c7c3a0 DW |
282 | { |
283 | struct ibmpex_bmc_data *data = dev_get_drvdata(dev); | |
284 | ||
285 | ibmpex_reset_high_low_data(data); | |
286 | ||
287 | return count; | |
288 | } | |
289 | ||
09cb4161 | 290 | static SENSOR_DEVICE_ATTR_WO(reset_high_low, ibmpex_high_low, 0); |
57c7c3a0 DW |
291 | |
292 | static int is_power_sensor(const char *sensor_id, int len) | |
293 | { | |
294 | if (len < PEX_SENSOR_TYPE_LEN) | |
295 | return 0; | |
296 | ||
297 | if (!memcmp(sensor_id, power_sensor_sig, PEX_SENSOR_TYPE_LEN)) | |
298 | return 1; | |
299 | return 0; | |
300 | } | |
301 | ||
302 | static int is_temp_sensor(const char *sensor_id, int len) | |
303 | { | |
304 | if (len < PEX_SENSOR_TYPE_LEN) | |
305 | return 0; | |
306 | ||
307 | if (!memcmp(sensor_id, temp_sensor_sig, PEX_SENSOR_TYPE_LEN)) | |
308 | return 1; | |
309 | return 0; | |
310 | } | |
311 | ||
df9cb033 DW |
312 | static int power_sensor_multiplier(struct ibmpex_bmc_data *data, |
313 | const char *sensor_id, int len) | |
57c7c3a0 DW |
314 | { |
315 | int i; | |
316 | ||
df9cb033 DW |
317 | if (data->sensor_major == 2) |
318 | return 1000000; | |
319 | ||
57c7c3a0 DW |
320 | for (i = PEX_SENSOR_TYPE_LEN; i < len - 1; i++) |
321 | if (!memcmp(&sensor_id[i], watt_sensor_sig, PEX_MULT_LEN)) | |
322 | return 1000000; | |
323 | ||
324 | return 100000; | |
325 | } | |
326 | ||
327 | static int create_sensor(struct ibmpex_bmc_data *data, int type, | |
328 | int counter, int sensor, int func) | |
329 | { | |
330 | int err; | |
331 | char *n; | |
332 | ||
333 | n = kmalloc(32, GFP_KERNEL); | |
334 | if (!n) | |
335 | return -ENOMEM; | |
336 | ||
337 | if (type == TEMP_SENSOR) | |
a0fc74d4 RV |
338 | sprintf(n, "temp%d_input%s", |
339 | counter, sensor_name_suffixes[func]); | |
57c7c3a0 | 340 | else if (type == POWER_SENSOR) |
a0fc74d4 RV |
341 | sprintf(n, "power%d_average%s", |
342 | counter, sensor_name_suffixes[func]); | |
57c7c3a0 | 343 | |
fb794e0f | 344 | sysfs_attr_init(&data->sensors[sensor].attr[func].dev_attr.attr); |
57c7c3a0 | 345 | data->sensors[sensor].attr[func].dev_attr.attr.name = n; |
09cb4161 | 346 | data->sensors[sensor].attr[func].dev_attr.attr.mode = 0444; |
57c7c3a0 DW |
347 | data->sensors[sensor].attr[func].dev_attr.show = ibmpex_show_sensor; |
348 | data->sensors[sensor].attr[func].index = sensor; | |
349 | data->sensors[sensor].attr[func].nr = func; | |
350 | ||
351 | err = device_create_file(data->bmc_device, | |
352 | &data->sensors[sensor].attr[func].dev_attr); | |
353 | if (err) { | |
354 | data->sensors[sensor].attr[func].dev_attr.attr.name = NULL; | |
355 | kfree(n); | |
356 | return err; | |
357 | } | |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
362 | static int ibmpex_find_sensors(struct ibmpex_bmc_data *data) | |
363 | { | |
364 | int i, j, err; | |
365 | int sensor_type; | |
366 | int sensor_counter; | |
367 | int num_power = 0; | |
368 | int num_temp = 0; | |
369 | ||
370 | err = ibmpex_query_sensor_count(data); | |
371 | if (err <= 0) | |
372 | return -ENOENT; | |
373 | data->num_sensors = err; | |
374 | ||
6396bb22 | 375 | data->sensors = kcalloc(data->num_sensors, sizeof(*data->sensors), |
57c7c3a0 DW |
376 | GFP_KERNEL); |
377 | if (!data->sensors) | |
378 | return -ENOMEM; | |
379 | ||
380 | for (i = 0; i < data->num_sensors; i++) { | |
381 | err = ibmpex_query_sensor_name(data, i); | |
382 | if (err) | |
383 | continue; | |
384 | ||
385 | if (is_power_sensor(data->rx_msg_data, data->rx_msg_len)) { | |
386 | sensor_type = POWER_SENSOR; | |
387 | num_power++; | |
388 | sensor_counter = num_power; | |
389 | data->sensors[i].multiplier = | |
df9cb033 DW |
390 | power_sensor_multiplier(data, |
391 | data->rx_msg_data, | |
392 | data->rx_msg_len); | |
57c7c3a0 DW |
393 | } else if (is_temp_sensor(data->rx_msg_data, |
394 | data->rx_msg_len)) { | |
395 | sensor_type = TEMP_SENSOR; | |
396 | num_temp++; | |
397 | sensor_counter = num_temp; | |
ffda6857 | 398 | data->sensors[i].multiplier = 1000; |
57c7c3a0 DW |
399 | } else |
400 | continue; | |
401 | ||
402 | data->sensors[i].in_use = 1; | |
403 | ||
404 | /* Create attributes */ | |
405 | for (j = 0; j < PEX_NUM_SENSOR_FUNCS; j++) { | |
406 | err = create_sensor(data, sensor_type, sensor_counter, | |
407 | i, j); | |
408 | if (err) | |
409 | goto exit_remove; | |
410 | } | |
411 | } | |
412 | ||
413 | err = device_create_file(data->bmc_device, | |
414 | &sensor_dev_attr_reset_high_low.dev_attr); | |
415 | if (err) | |
416 | goto exit_remove; | |
417 | ||
418 | err = device_create_file(data->bmc_device, | |
419 | &sensor_dev_attr_name.dev_attr); | |
420 | if (err) | |
421 | goto exit_remove; | |
422 | ||
423 | return 0; | |
424 | ||
425 | exit_remove: | |
426 | device_remove_file(data->bmc_device, | |
427 | &sensor_dev_attr_reset_high_low.dev_attr); | |
428 | device_remove_file(data->bmc_device, &sensor_dev_attr_name.dev_attr); | |
429 | for (i = 0; i < data->num_sensors; i++) | |
430 | for (j = 0; j < PEX_NUM_SENSOR_FUNCS; j++) { | |
431 | if (!data->sensors[i].attr[j].dev_attr.attr.name) | |
432 | continue; | |
433 | device_remove_file(data->bmc_device, | |
434 | &data->sensors[i].attr[j].dev_attr); | |
435 | kfree(data->sensors[i].attr[j].dev_attr.attr.name); | |
436 | } | |
437 | ||
438 | kfree(data->sensors); | |
439 | return err; | |
440 | } | |
441 | ||
442 | static void ibmpex_register_bmc(int iface, struct device *dev) | |
443 | { | |
444 | struct ibmpex_bmc_data *data; | |
445 | int err; | |
446 | ||
447 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
6d33d304 | 448 | if (!data) |
57c7c3a0 | 449 | return; |
57c7c3a0 DW |
450 | |
451 | data->address.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; | |
452 | data->address.channel = IPMI_BMC_CHANNEL; | |
453 | data->address.data[0] = 0; | |
454 | data->interface = iface; | |
455 | data->bmc_device = dev; | |
456 | ||
457 | /* Create IPMI messaging interface user */ | |
458 | err = ipmi_create_user(data->interface, &driver_data.ipmi_hndlrs, | |
459 | data, &data->user); | |
460 | if (err < 0) { | |
b55f3757 GR |
461 | dev_err(dev, |
462 | "Unable to register user with IPMI interface %d\n", | |
463 | data->interface); | |
57c7c3a0 DW |
464 | goto out; |
465 | } | |
466 | ||
467 | mutex_init(&data->lock); | |
468 | ||
469 | /* Initialize message */ | |
470 | data->tx_msgid = 0; | |
471 | init_completion(&data->read_complete); | |
472 | data->tx_message.netfn = PEX_NET_FUNCTION; | |
473 | data->tx_message.cmd = PEX_COMMAND; | |
474 | data->tx_message.data = data->tx_msg_data; | |
475 | ||
476 | /* Does this BMC support PowerExecutive? */ | |
477 | err = ibmpex_ver_check(data); | |
478 | if (err) | |
479 | goto out_user; | |
480 | ||
481 | /* Register the BMC as a HWMON class device */ | |
482 | data->hwmon_dev = hwmon_device_register(data->bmc_device); | |
483 | ||
484 | if (IS_ERR(data->hwmon_dev)) { | |
b55f3757 GR |
485 | dev_err(data->bmc_device, |
486 | "Unable to register hwmon device for IPMI interface %d\n", | |
2ecb044e | 487 | data->interface); |
4cfdbe7f | 488 | goto out_user; |
57c7c3a0 DW |
489 | } |
490 | ||
491 | /* finally add the new bmc data to the bmc data list */ | |
492 | dev_set_drvdata(dev, data); | |
493 | list_add_tail(&data->list, &driver_data.bmc_data); | |
494 | ||
495 | /* Now go find all the sensors */ | |
496 | err = ibmpex_find_sensors(data); | |
497 | if (err) { | |
2ecb044e | 498 | dev_err(data->bmc_device, "Error %d finding sensors\n", err); |
57c7c3a0 DW |
499 | goto out_register; |
500 | } | |
501 | ||
502 | return; | |
503 | ||
504 | out_register: | |
505 | hwmon_device_unregister(data->hwmon_dev); | |
506 | out_user: | |
507 | ipmi_destroy_user(data->user); | |
508 | out: | |
509 | kfree(data); | |
510 | } | |
511 | ||
512 | static void ibmpex_bmc_delete(struct ibmpex_bmc_data *data) | |
513 | { | |
514 | int i, j; | |
515 | ||
516 | device_remove_file(data->bmc_device, | |
517 | &sensor_dev_attr_reset_high_low.dev_attr); | |
518 | device_remove_file(data->bmc_device, &sensor_dev_attr_name.dev_attr); | |
519 | for (i = 0; i < data->num_sensors; i++) | |
520 | for (j = 0; j < PEX_NUM_SENSOR_FUNCS; j++) { | |
521 | if (!data->sensors[i].attr[j].dev_attr.attr.name) | |
522 | continue; | |
523 | device_remove_file(data->bmc_device, | |
524 | &data->sensors[i].attr[j].dev_attr); | |
525 | kfree(data->sensors[i].attr[j].dev_attr.attr.name); | |
526 | } | |
527 | ||
528 | list_del(&data->list); | |
529 | dev_set_drvdata(data->bmc_device, NULL); | |
530 | hwmon_device_unregister(data->hwmon_dev); | |
531 | ipmi_destroy_user(data->user); | |
532 | kfree(data->sensors); | |
533 | kfree(data); | |
534 | } | |
535 | ||
536 | static void ibmpex_bmc_gone(int iface) | |
537 | { | |
538 | struct ibmpex_bmc_data *data = get_bmc_data(iface); | |
539 | ||
540 | if (!data) | |
541 | return; | |
542 | ||
543 | ibmpex_bmc_delete(data); | |
544 | } | |
545 | ||
546 | static void ibmpex_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data) | |
547 | { | |
548 | struct ibmpex_bmc_data *data = (struct ibmpex_bmc_data *)user_msg_data; | |
549 | ||
550 | if (msg->msgid != data->tx_msgid) { | |
b55f3757 GR |
551 | dev_err(data->bmc_device, |
552 | "Mismatch between received msgid (%02x) and transmitted msgid (%02x)!\n", | |
2ecb044e DW |
553 | (int)msg->msgid, |
554 | (int)data->tx_msgid); | |
57c7c3a0 DW |
555 | ipmi_free_recv_msg(msg); |
556 | return; | |
557 | } | |
558 | ||
559 | data->rx_recv_type = msg->recv_type; | |
560 | if (msg->msg.data_len > 0) | |
561 | data->rx_result = msg->msg.data[0]; | |
562 | else | |
563 | data->rx_result = IPMI_UNKNOWN_ERR_COMPLETION_CODE; | |
564 | ||
565 | if (msg->msg.data_len > 1) { | |
566 | data->rx_msg_len = msg->msg.data_len - 1; | |
567 | memcpy(data->rx_msg_data, msg->msg.data + 1, data->rx_msg_len); | |
568 | } else | |
569 | data->rx_msg_len = 0; | |
570 | ||
571 | ipmi_free_recv_msg(msg); | |
572 | complete(&data->read_complete); | |
573 | } | |
574 | ||
575 | static int __init ibmpex_init(void) | |
576 | { | |
577 | return ipmi_smi_watcher_register(&driver_data.bmc_events); | |
578 | } | |
579 | ||
580 | static void __exit ibmpex_exit(void) | |
581 | { | |
582 | struct ibmpex_bmc_data *p, *next; | |
583 | ||
584 | ipmi_smi_watcher_unregister(&driver_data.bmc_events); | |
585 | list_for_each_entry_safe(p, next, &driver_data.bmc_data, list) | |
586 | ibmpex_bmc_delete(p); | |
587 | } | |
588 | ||
5407e051 | 589 | MODULE_AUTHOR("Darrick J. Wong <darrick.wong@oracle.com>"); |
57c7c3a0 DW |
590 | MODULE_DESCRIPTION("IBM PowerExecutive power/temperature sensor driver"); |
591 | MODULE_LICENSE("GPL"); | |
592 | ||
593 | module_init(ibmpex_init); | |
594 | module_exit(ibmpex_exit); | |
ff921361 DW |
595 | |
596 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3350-*"); | |
597 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3550-*"); | |
598 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3650-*"); | |
599 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3655-*"); | |
600 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3755-*"); |