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1// SPDX-License-Identifier: GPL-2.0
2
3/*
4 * Copyright 2016-2019 HabanaLabs, Ltd.
5 * All Rights Reserved.
6 */
7
8#include "habanalabs.h"
9
10#include <linux/pci.h>
11#include <linux/hwmon.h>
12
13#define HWMON_NR_SENSOR_TYPES (hwmon_pwm + 1)
14
15int hl_build_hwmon_channel_info(struct hl_device *hdev,
16 struct armcp_sensor *sensors_arr)
17{
18 u32 counts[HWMON_NR_SENSOR_TYPES] = {0};
19 u32 *sensors_by_type[HWMON_NR_SENSOR_TYPES] = {NULL};
20 u32 sensors_by_type_next_index[HWMON_NR_SENSOR_TYPES] = {0};
21 struct hwmon_channel_info **channels_info;
22 u32 num_sensors_for_type, num_active_sensor_types = 0,
23 arr_size = 0, *curr_arr;
24 enum hwmon_sensor_types type;
25 int rc, i, j;
26
27 for (i = 0 ; i < ARMCP_MAX_SENSORS ; i++) {
28 type = le32_to_cpu(sensors_arr[i].type);
29
30 if ((type == 0) && (sensors_arr[i].flags == 0))
31 break;
32
33 if (type >= HWMON_NR_SENSOR_TYPES) {
34 dev_err(hdev->dev,
35 "Got wrong sensor type %d from device\n", type);
36 return -EINVAL;
37 }
38
39 counts[type]++;
40 arr_size++;
41 }
42
43 for (i = 0 ; i < HWMON_NR_SENSOR_TYPES ; i++) {
44 if (counts[i] == 0)
45 continue;
46
47 num_sensors_for_type = counts[i] + 1;
48 curr_arr = kcalloc(num_sensors_for_type, sizeof(*curr_arr),
49 GFP_KERNEL);
50 if (!curr_arr) {
51 rc = -ENOMEM;
52 goto sensors_type_err;
53 }
54
55 num_active_sensor_types++;
56 sensors_by_type[i] = curr_arr;
57 }
58
59 for (i = 0 ; i < arr_size ; i++) {
60 type = le32_to_cpu(sensors_arr[i].type);
61 curr_arr = sensors_by_type[type];
62 curr_arr[sensors_by_type_next_index[type]++] =
63 le32_to_cpu(sensors_arr[i].flags);
64 }
65
66 channels_info = kcalloc(num_active_sensor_types + 1,
67 sizeof(*channels_info), GFP_KERNEL);
68 if (!channels_info) {
69 rc = -ENOMEM;
70 goto channels_info_array_err;
71 }
72
73 for (i = 0 ; i < num_active_sensor_types ; i++) {
74 channels_info[i] = kzalloc(sizeof(*channels_info[i]),
75 GFP_KERNEL);
76 if (!channels_info[i]) {
77 rc = -ENOMEM;
78 goto channel_info_err;
79 }
80 }
81
82 for (i = 0, j = 0 ; i < HWMON_NR_SENSOR_TYPES ; i++) {
83 if (!sensors_by_type[i])
84 continue;
85
86 channels_info[j]->type = i;
87 channels_info[j]->config = sensors_by_type[i];
88 j++;
89 }
90
91 hdev->hl_chip_info->info =
92 (const struct hwmon_channel_info **)channels_info;
93
94 return 0;
95
96channel_info_err:
97 for (i = 0 ; i < num_active_sensor_types ; i++)
98 if (channels_info[i]) {
99 kfree(channels_info[i]->config);
100 kfree(channels_info[i]);
101 }
102 kfree(channels_info);
103channels_info_array_err:
104sensors_type_err:
105 for (i = 0 ; i < HWMON_NR_SENSOR_TYPES ; i++)
106 kfree(sensors_by_type[i]);
107
108 return rc;
109}
110
111static int hl_read(struct device *dev, enum hwmon_sensor_types type,
112 u32 attr, int channel, long *val)
113{
114 struct hl_device *hdev = dev_get_drvdata(dev);
115 int rc;
116
117 if (hl_device_disabled_or_in_reset(hdev))
118 return -ENODEV;
119
120 switch (type) {
121 case hwmon_temp:
122 switch (attr) {
123 case hwmon_temp_input:
124 case hwmon_temp_max:
125 case hwmon_temp_crit:
126 case hwmon_temp_max_hyst:
127 case hwmon_temp_crit_hyst:
128 case hwmon_temp_offset:
129 case hwmon_temp_highest:
130 break;
131 default:
132 return -EINVAL;
133 }
134
135 rc = hl_get_temperature(hdev, channel, attr, val);
136 break;
137 case hwmon_in:
138 switch (attr) {
139 case hwmon_in_input:
140 case hwmon_in_min:
141 case hwmon_in_max:
142 case hwmon_in_highest:
143 break;
144 default:
145 return -EINVAL;
146 }
147
148 rc = hl_get_voltage(hdev, channel, attr, val);
149 break;
150 case hwmon_curr:
151 switch (attr) {
152 case hwmon_curr_input:
153 case hwmon_curr_min:
154 case hwmon_curr_max:
155 case hwmon_curr_highest:
156 break;
157 default:
158 return -EINVAL;
159 }
160
161 rc = hl_get_current(hdev, channel, attr, val);
162 break;
163 case hwmon_fan:
164 switch (attr) {
165 case hwmon_fan_input:
166 case hwmon_fan_min:
167 case hwmon_fan_max:
168 break;
169 default:
170 return -EINVAL;
171 }
172 rc = hl_get_fan_speed(hdev, channel, attr, val);
173 break;
174 case hwmon_pwm:
175 switch (attr) {
176 case hwmon_pwm_input:
177 case hwmon_pwm_enable:
178 break;
179 default:
180 return -EINVAL;
181 }
182 rc = hl_get_pwm_info(hdev, channel, attr, val);
183 break;
184 default:
185 return -EINVAL;
186 }
187 return rc;
188}
189
190static int hl_write(struct device *dev, enum hwmon_sensor_types type,
191 u32 attr, int channel, long val)
192{
193 struct hl_device *hdev = dev_get_drvdata(dev);
194
195 if (hl_device_disabled_or_in_reset(hdev))
196 return -ENODEV;
197
198 switch (type) {
199 case hwmon_temp:
200 switch (attr) {
201 case hwmon_temp_offset:
202 case hwmon_temp_reset_history:
203 break;
204 default:
205 return -EINVAL;
206 }
207 hl_set_temperature(hdev, channel, attr, val);
208 break;
209 case hwmon_pwm:
210 switch (attr) {
211 case hwmon_pwm_input:
212 case hwmon_pwm_enable:
213 break;
214 default:
215 return -EINVAL;
216 }
217 hl_set_pwm_info(hdev, channel, attr, val);
218 break;
219 case hwmon_in:
220 switch (attr) {
221 case hwmon_in_reset_history:
222 break;
223 default:
224 return -EINVAL;
225 }
226 hl_set_voltage(hdev, channel, attr, val);
227 break;
228 case hwmon_curr:
229 switch (attr) {
230 case hwmon_curr_reset_history:
231 break;
232 default:
233 return -EINVAL;
234 }
235 hl_set_current(hdev, channel, attr, val);
236 break;
237 default:
238 return -EINVAL;
239 }
240 return 0;
241}
242
243static umode_t hl_is_visible(const void *data, enum hwmon_sensor_types type,
244 u32 attr, int channel)
245{
246 switch (type) {
247 case hwmon_temp:
248 switch (attr) {
249 case hwmon_temp_input:
250 case hwmon_temp_max:
251 case hwmon_temp_max_hyst:
252 case hwmon_temp_crit:
253 case hwmon_temp_crit_hyst:
254 case hwmon_temp_highest:
255 return 0444;
256 case hwmon_temp_offset:
257 return 0644;
258 case hwmon_temp_reset_history:
259 return 0200;
260 }
261 break;
262 case hwmon_in:
263 switch (attr) {
264 case hwmon_in_input:
265 case hwmon_in_min:
266 case hwmon_in_max:
267 case hwmon_in_highest:
268 return 0444;
269 case hwmon_in_reset_history:
270 return 0200;
271 }
272 break;
273 case hwmon_curr:
274 switch (attr) {
275 case hwmon_curr_input:
276 case hwmon_curr_min:
277 case hwmon_curr_max:
278 case hwmon_curr_highest:
279 return 0444;
280 case hwmon_curr_reset_history:
281 return 0200;
282 }
283 break;
284 case hwmon_fan:
285 switch (attr) {
286 case hwmon_fan_input:
287 case hwmon_fan_min:
288 case hwmon_fan_max:
289 return 0444;
290 }
291 break;
292 case hwmon_pwm:
293 switch (attr) {
294 case hwmon_pwm_input:
295 case hwmon_pwm_enable:
296 return 0644;
297 }
298 break;
299 default:
300 break;
301 }
302 return 0;
303}
304
305static const struct hwmon_ops hl_hwmon_ops = {
306 .is_visible = hl_is_visible,
307 .read = hl_read,
308 .write = hl_write
309};
310
311int hl_get_temperature(struct hl_device *hdev,
312 int sensor_index, u32 attr, long *value)
313{
314 struct armcp_packet pkt;
315 int rc;
316
317 memset(&pkt, 0, sizeof(pkt));
318
319 pkt.ctl = cpu_to_le32(ARMCP_PACKET_TEMPERATURE_GET <<
320 ARMCP_PKT_CTL_OPCODE_SHIFT);
321 pkt.sensor_index = __cpu_to_le16(sensor_index);
322 pkt.type = __cpu_to_le16(attr);
323
324 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
325 0, value);
326
327 if (rc) {
328 dev_err(hdev->dev,
329 "Failed to get temperature from sensor %d, error %d\n",
330 sensor_index, rc);
331 *value = 0;
332 }
333
334 return rc;
335}
336
337int hl_set_temperature(struct hl_device *hdev,
338 int sensor_index, u32 attr, long value)
339{
340 struct armcp_packet pkt;
341 int rc;
342
343 memset(&pkt, 0, sizeof(pkt));
344
345 pkt.ctl = cpu_to_le32(ARMCP_PACKET_TEMPERATURE_SET <<
346 ARMCP_PKT_CTL_OPCODE_SHIFT);
347 pkt.sensor_index = __cpu_to_le16(sensor_index);
348 pkt.type = __cpu_to_le16(attr);
349 pkt.value = __cpu_to_le64(value);
350
351 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
352 0, NULL);
353
354 if (rc)
355 dev_err(hdev->dev,
356 "Failed to set temperature of sensor %d, error %d\n",
357 sensor_index, rc);
358
359 return rc;
360}
361
362int hl_get_voltage(struct hl_device *hdev,
363 int sensor_index, u32 attr, long *value)
364{
365 struct armcp_packet pkt;
366 int rc;
367
368 memset(&pkt, 0, sizeof(pkt));
369
370 pkt.ctl = cpu_to_le32(ARMCP_PACKET_VOLTAGE_GET <<
371 ARMCP_PKT_CTL_OPCODE_SHIFT);
372 pkt.sensor_index = __cpu_to_le16(sensor_index);
373 pkt.type = __cpu_to_le16(attr);
374
375 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
376 0, value);
377
378 if (rc) {
379 dev_err(hdev->dev,
380 "Failed to get voltage from sensor %d, error %d\n",
381 sensor_index, rc);
382 *value = 0;
383 }
384
385 return rc;
386}
387
388int hl_get_current(struct hl_device *hdev,
389 int sensor_index, u32 attr, long *value)
390{
391 struct armcp_packet pkt;
392 int rc;
393
394 memset(&pkt, 0, sizeof(pkt));
395
396 pkt.ctl = cpu_to_le32(ARMCP_PACKET_CURRENT_GET <<
397 ARMCP_PKT_CTL_OPCODE_SHIFT);
398 pkt.sensor_index = __cpu_to_le16(sensor_index);
399 pkt.type = __cpu_to_le16(attr);
400
401 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
402 0, value);
403
404 if (rc) {
405 dev_err(hdev->dev,
406 "Failed to get current from sensor %d, error %d\n",
407 sensor_index, rc);
408 *value = 0;
409 }
410
411 return rc;
412}
413
414int hl_get_fan_speed(struct hl_device *hdev,
415 int sensor_index, u32 attr, long *value)
416{
417 struct armcp_packet pkt;
418 int rc;
419
420 memset(&pkt, 0, sizeof(pkt));
421
422 pkt.ctl = cpu_to_le32(ARMCP_PACKET_FAN_SPEED_GET <<
423 ARMCP_PKT_CTL_OPCODE_SHIFT);
424 pkt.sensor_index = __cpu_to_le16(sensor_index);
425 pkt.type = __cpu_to_le16(attr);
426
427 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
428 0, value);
429
430 if (rc) {
431 dev_err(hdev->dev,
432 "Failed to get fan speed from sensor %d, error %d\n",
433 sensor_index, rc);
434 *value = 0;
435 }
436
437 return rc;
438}
439
440int hl_get_pwm_info(struct hl_device *hdev,
441 int sensor_index, u32 attr, long *value)
442{
443 struct armcp_packet pkt;
444 int rc;
445
446 memset(&pkt, 0, sizeof(pkt));
447
448 pkt.ctl = cpu_to_le32(ARMCP_PACKET_PWM_GET <<
449 ARMCP_PKT_CTL_OPCODE_SHIFT);
450 pkt.sensor_index = __cpu_to_le16(sensor_index);
451 pkt.type = __cpu_to_le16(attr);
452
453 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
454 0, value);
455
456 if (rc) {
457 dev_err(hdev->dev,
458 "Failed to get pwm info from sensor %d, error %d\n",
459 sensor_index, rc);
460 *value = 0;
461 }
462
463 return rc;
464}
465
466void hl_set_pwm_info(struct hl_device *hdev, int sensor_index, u32 attr,
467 long value)
468{
469 struct armcp_packet pkt;
470 int rc;
471
472 memset(&pkt, 0, sizeof(pkt));
473
474 pkt.ctl = cpu_to_le32(ARMCP_PACKET_PWM_SET <<
475 ARMCP_PKT_CTL_OPCODE_SHIFT);
476 pkt.sensor_index = __cpu_to_le16(sensor_index);
477 pkt.type = __cpu_to_le16(attr);
478 pkt.value = cpu_to_le64(value);
479
480 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
481 0, NULL);
482
483 if (rc)
484 dev_err(hdev->dev,
485 "Failed to set pwm info to sensor %d, error %d\n",
486 sensor_index, rc);
487}
488
489int hl_set_voltage(struct hl_device *hdev,
490 int sensor_index, u32 attr, long value)
491{
492 struct armcp_packet pkt;
493 int rc;
494
495 memset(&pkt, 0, sizeof(pkt));
496
497 pkt.ctl = cpu_to_le32(ARMCP_PACKET_VOLTAGE_SET <<
498 ARMCP_PKT_CTL_OPCODE_SHIFT);
499 pkt.sensor_index = __cpu_to_le16(sensor_index);
500 pkt.type = __cpu_to_le16(attr);
501 pkt.value = __cpu_to_le64(value);
502
503 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
504 0, NULL);
505
506 if (rc)
507 dev_err(hdev->dev,
508 "Failed to set voltage of sensor %d, error %d\n",
509 sensor_index, rc);
510
511 return rc;
512}
513
514int hl_set_current(struct hl_device *hdev,
515 int sensor_index, u32 attr, long value)
516{
517 struct armcp_packet pkt;
518 int rc;
519
520 memset(&pkt, 0, sizeof(pkt));
521
522 pkt.ctl = cpu_to_le32(ARMCP_PACKET_CURRENT_SET <<
523 ARMCP_PKT_CTL_OPCODE_SHIFT);
524 pkt.sensor_index = __cpu_to_le16(sensor_index);
525 pkt.type = __cpu_to_le16(attr);
526 pkt.value = __cpu_to_le64(value);
527
528 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
529 0, NULL);
530
531 if (rc)
532 dev_err(hdev->dev,
533 "Failed to set current of sensor %d, error %d\n",
534 sensor_index, rc);
535
536 return rc;
537}
538
539int hl_hwmon_init(struct hl_device *hdev)
540{
541 struct device *dev = hdev->pdev ? &hdev->pdev->dev : hdev->dev;
542 struct asic_fixed_properties *prop = &hdev->asic_prop;
543 int rc;
544
545 if ((hdev->hwmon_initialized) || !(hdev->fw_loading))
546 return 0;
547
548 if (hdev->hl_chip_info->info) {
549 hdev->hl_chip_info->ops = &hl_hwmon_ops;
550
551 hdev->hwmon_dev = hwmon_device_register_with_info(dev,
552 prop->armcp_info.card_name, hdev,
553 hdev->hl_chip_info, NULL);
554 if (IS_ERR(hdev->hwmon_dev)) {
555 rc = PTR_ERR(hdev->hwmon_dev);
556 dev_err(hdev->dev,
557 "Unable to register hwmon device: %d\n", rc);
558 return rc;
559 }
560
561 dev_info(hdev->dev, "%s: add sensors information\n",
562 dev_name(hdev->hwmon_dev));
563
564 hdev->hwmon_initialized = true;
565 } else {
566 dev_info(hdev->dev, "no available sensors\n");
567 }
568
569 return 0;
570}
571
572void hl_hwmon_fini(struct hl_device *hdev)
573{
574 if (!hdev->hwmon_initialized)
575 return;
576
577 hwmon_device_unregister(hdev->hwmon_dev);
578}