1 // SPDX-License-Identifier: GPL-2.0
2 
3 /*
4  * Copyright 2016-2022 HabanaLabs, Ltd.
5  * All Rights Reserved.
6  */
7 
8 #include "habanalabs.h"
9 
10 #include <linux/pci.h>
11 
12 static ssize_t clk_max_freq_mhz_show(struct device *dev, struct device_attribute *attr, char *buf)
13 {
14 	struct hl_device *hdev = dev_get_drvdata(dev);
15 	long value;
16 
17 	if (!hl_device_operational(hdev, NULL))
18 		return -ENODEV;
19 
20 	value = hl_fw_get_frequency(hdev, hdev->asic_prop.clk_pll_index, false);
21 	if (value < 0)
22 		return value;
23 
24 	hdev->asic_prop.max_freq_value = value;
25 
26 	return sprintf(buf, "%lu\n", (value / 1000 / 1000));
27 }
28 
29 static ssize_t clk_max_freq_mhz_store(struct device *dev, struct device_attribute *attr,
30 					const char *buf, size_t count)
31 {
32 	struct hl_device *hdev = dev_get_drvdata(dev);
33 	int rc;
34 	u64 value;
35 
36 	if (!hl_device_operational(hdev, NULL)) {
37 		count = -ENODEV;
38 		goto fail;
39 	}
40 
41 	rc = kstrtoull(buf, 0, &value);
42 	if (rc) {
43 		count = -EINVAL;
44 		goto fail;
45 	}
46 
47 	hdev->asic_prop.max_freq_value = value * 1000 * 1000;
48 
49 	hl_fw_set_frequency(hdev, hdev->asic_prop.clk_pll_index, hdev->asic_prop.max_freq_value);
50 
51 fail:
52 	return count;
53 }
54 
55 static ssize_t clk_cur_freq_mhz_show(struct device *dev, struct device_attribute *attr, char *buf)
56 {
57 	struct hl_device *hdev = dev_get_drvdata(dev);
58 	long value;
59 
60 	if (!hl_device_operational(hdev, NULL))
61 		return -ENODEV;
62 
63 	value = hl_fw_get_frequency(hdev, hdev->asic_prop.clk_pll_index, true);
64 	if (value < 0)
65 		return value;
66 
67 	return sprintf(buf, "%lu\n", (value / 1000 / 1000));
68 }
69 
70 static DEVICE_ATTR_RW(clk_max_freq_mhz);
71 static DEVICE_ATTR_RO(clk_cur_freq_mhz);
72 
73 static struct attribute *hl_dev_clk_attrs[] = {
74 	&dev_attr_clk_max_freq_mhz.attr,
75 	&dev_attr_clk_cur_freq_mhz.attr,
76 	NULL,
77 };
78 
79 static ssize_t vrm_ver_show(struct device *dev, struct device_attribute *attr, char *buf)
80 {
81 	struct hl_device *hdev = dev_get_drvdata(dev);
82 	struct cpucp_info *cpucp_info;
83 
84 	cpucp_info = &hdev->asic_prop.cpucp_info;
85 
86 	if (cpucp_info->infineon_second_stage_version)
87 		return sprintf(buf, "%#04x %#04x\n", le32_to_cpu(cpucp_info->infineon_version),
88 				le32_to_cpu(cpucp_info->infineon_second_stage_version));
89 	else
90 		return sprintf(buf, "%#04x\n", le32_to_cpu(cpucp_info->infineon_version));
91 }
92 
93 static DEVICE_ATTR_RO(vrm_ver);
94 
95 static struct attribute *hl_dev_vrm_attrs[] = {
96 	&dev_attr_vrm_ver.attr,
97 	NULL,
98 };
99 
100 static ssize_t uboot_ver_show(struct device *dev, struct device_attribute *attr,
101 				char *buf)
102 {
103 	struct hl_device *hdev = dev_get_drvdata(dev);
104 
105 	return sprintf(buf, "%s\n", hdev->asic_prop.uboot_ver);
106 }
107 
108 static ssize_t armcp_kernel_ver_show(struct device *dev,
109 				struct device_attribute *attr, char *buf)
110 {
111 	struct hl_device *hdev = dev_get_drvdata(dev);
112 
113 	return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.kernel_version);
114 }
115 
116 static ssize_t armcp_ver_show(struct device *dev, struct device_attribute *attr,
117 				char *buf)
118 {
119 	struct hl_device *hdev = dev_get_drvdata(dev);
120 
121 	return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.cpucp_version);
122 }
123 
124 static ssize_t cpld_ver_show(struct device *dev, struct device_attribute *attr,
125 				char *buf)
126 {
127 	struct hl_device *hdev = dev_get_drvdata(dev);
128 
129 	return sprintf(buf, "0x%08x\n",
130 			le32_to_cpu(hdev->asic_prop.cpucp_info.cpld_version));
131 }
132 
133 static ssize_t cpucp_kernel_ver_show(struct device *dev,
134 				struct device_attribute *attr, char *buf)
135 {
136 	struct hl_device *hdev = dev_get_drvdata(dev);
137 
138 	return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.kernel_version);
139 }
140 
141 static ssize_t cpucp_ver_show(struct device *dev, struct device_attribute *attr,
142 				char *buf)
143 {
144 	struct hl_device *hdev = dev_get_drvdata(dev);
145 
146 	return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.cpucp_version);
147 }
148 
149 static ssize_t fuse_ver_show(struct device *dev, struct device_attribute *attr,
150 				char *buf)
151 {
152 	struct hl_device *hdev = dev_get_drvdata(dev);
153 
154 	return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.fuse_version);
155 }
156 
157 static ssize_t thermal_ver_show(struct device *dev,
158 				struct device_attribute *attr, char *buf)
159 {
160 	struct hl_device *hdev = dev_get_drvdata(dev);
161 
162 	return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.thermal_version);
163 }
164 
165 static ssize_t fw_os_ver_show(struct device *dev,
166 				struct device_attribute *attr, char *buf)
167 {
168 	struct hl_device *hdev = dev_get_drvdata(dev);
169 
170 	return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.fw_os_version);
171 }
172 
173 static ssize_t preboot_btl_ver_show(struct device *dev,
174 				struct device_attribute *attr, char *buf)
175 {
176 	struct hl_device *hdev = dev_get_drvdata(dev);
177 
178 	return sprintf(buf, "%s\n", hdev->asic_prop.preboot_ver);
179 }
180 
181 static ssize_t soft_reset_store(struct device *dev,
182 				struct device_attribute *attr, const char *buf,
183 				size_t count)
184 {
185 	struct hl_device *hdev = dev_get_drvdata(dev);
186 	long value;
187 	int rc;
188 
189 	rc = kstrtoul(buf, 0, &value);
190 
191 	if (rc) {
192 		count = -EINVAL;
193 		goto out;
194 	}
195 
196 	if (!hdev->asic_prop.allow_inference_soft_reset) {
197 		dev_err(hdev->dev, "Device does not support inference soft-reset\n");
198 		goto out;
199 	}
200 
201 	dev_warn(hdev->dev, "Inference Soft-Reset requested through sysfs\n");
202 
203 	hl_device_reset(hdev, 0);
204 
205 out:
206 	return count;
207 }
208 
209 static ssize_t hard_reset_store(struct device *dev,
210 				struct device_attribute *attr,
211 				const char *buf, size_t count)
212 {
213 	struct hl_device *hdev = dev_get_drvdata(dev);
214 	long value;
215 	int rc;
216 
217 	rc = kstrtoul(buf, 0, &value);
218 
219 	if (rc) {
220 		count = -EINVAL;
221 		goto out;
222 	}
223 
224 	dev_warn(hdev->dev, "Hard-Reset requested through sysfs\n");
225 
226 	hl_device_reset(hdev, HL_DRV_RESET_HARD);
227 
228 out:
229 	return count;
230 }
231 
232 static ssize_t device_type_show(struct device *dev,
233 		struct device_attribute *attr, char *buf)
234 {
235 	struct hl_device *hdev = dev_get_drvdata(dev);
236 	char *str;
237 
238 	switch (hdev->asic_type) {
239 	case ASIC_GOYA:
240 		str = "GOYA";
241 		break;
242 	case ASIC_GAUDI:
243 		str = "GAUDI";
244 		break;
245 	case ASIC_GAUDI_SEC:
246 		str = "GAUDI SEC";
247 		break;
248 	case ASIC_GAUDI2:
249 		str = "GAUDI2";
250 		break;
251 	case ASIC_GAUDI2B:
252 		str = "GAUDI2B";
253 		break;
254 	default:
255 		dev_err(hdev->dev, "Unrecognized ASIC type %d\n",
256 				hdev->asic_type);
257 		return -EINVAL;
258 	}
259 
260 	return sprintf(buf, "%s\n", str);
261 }
262 
263 static ssize_t pci_addr_show(struct device *dev, struct device_attribute *attr,
264 				char *buf)
265 {
266 	struct hl_device *hdev = dev_get_drvdata(dev);
267 
268 	return sprintf(buf, "%04x:%02x:%02x.%x\n",
269 			pci_domain_nr(hdev->pdev->bus),
270 			hdev->pdev->bus->number,
271 			PCI_SLOT(hdev->pdev->devfn),
272 			PCI_FUNC(hdev->pdev->devfn));
273 }
274 
275 static ssize_t status_show(struct device *dev, struct device_attribute *attr,
276 				char *buf)
277 {
278 	struct hl_device *hdev = dev_get_drvdata(dev);
279 	char str[HL_STR_MAX];
280 
281 	strscpy(str, hdev->status[hl_device_status(hdev)], HL_STR_MAX);
282 
283 	/* use uppercase for backward compatibility */
284 	str[0] = 'A' + (str[0] - 'a');
285 
286 	return sprintf(buf, "%s\n", str);
287 }
288 
289 static ssize_t soft_reset_cnt_show(struct device *dev,
290 		struct device_attribute *attr, char *buf)
291 {
292 	struct hl_device *hdev = dev_get_drvdata(dev);
293 
294 	return sprintf(buf, "%d\n", hdev->reset_info.compute_reset_cnt);
295 }
296 
297 static ssize_t hard_reset_cnt_show(struct device *dev,
298 		struct device_attribute *attr, char *buf)
299 {
300 	struct hl_device *hdev = dev_get_drvdata(dev);
301 
302 	return sprintf(buf, "%d\n", hdev->reset_info.hard_reset_cnt);
303 }
304 
305 static ssize_t max_power_show(struct device *dev, struct device_attribute *attr,
306 				char *buf)
307 {
308 	struct hl_device *hdev = dev_get_drvdata(dev);
309 	long val;
310 
311 	if (!hl_device_operational(hdev, NULL))
312 		return -ENODEV;
313 
314 	val = hl_fw_get_max_power(hdev);
315 	if (val < 0)
316 		return val;
317 
318 	return sprintf(buf, "%lu\n", val);
319 }
320 
321 static ssize_t max_power_store(struct device *dev,
322 		struct device_attribute *attr, const char *buf, size_t count)
323 {
324 	struct hl_device *hdev = dev_get_drvdata(dev);
325 	unsigned long value;
326 	int rc;
327 
328 	if (!hl_device_operational(hdev, NULL)) {
329 		count = -ENODEV;
330 		goto out;
331 	}
332 
333 	rc = kstrtoul(buf, 0, &value);
334 
335 	if (rc) {
336 		count = -EINVAL;
337 		goto out;
338 	}
339 
340 	hdev->max_power = value;
341 	hl_fw_set_max_power(hdev);
342 
343 out:
344 	return count;
345 }
346 
347 static ssize_t eeprom_read_handler(struct file *filp, struct kobject *kobj,
348 			struct bin_attribute *attr, char *buf, loff_t offset,
349 			size_t max_size)
350 {
351 	struct device *dev = kobj_to_dev(kobj);
352 	struct hl_device *hdev = dev_get_drvdata(dev);
353 	char *data;
354 	int rc;
355 
356 	if (!hl_device_operational(hdev, NULL))
357 		return -ENODEV;
358 
359 	if (!max_size)
360 		return -EINVAL;
361 
362 	data = kzalloc(max_size, GFP_KERNEL);
363 	if (!data)
364 		return -ENOMEM;
365 
366 	rc = hdev->asic_funcs->get_eeprom_data(hdev, data, max_size);
367 	if (rc)
368 		goto out;
369 
370 	memcpy(buf, data, max_size);
371 
372 out:
373 	kfree(data);
374 
375 	return max_size;
376 }
377 
378 static ssize_t security_enabled_show(struct device *dev,
379 				struct device_attribute *attr, char *buf)
380 {
381 	struct hl_device *hdev = dev_get_drvdata(dev);
382 
383 	return sprintf(buf, "%d\n", hdev->asic_prop.fw_security_enabled);
384 }
385 
386 static DEVICE_ATTR_RO(armcp_kernel_ver);
387 static DEVICE_ATTR_RO(armcp_ver);
388 static DEVICE_ATTR_RO(cpld_ver);
389 static DEVICE_ATTR_RO(cpucp_kernel_ver);
390 static DEVICE_ATTR_RO(cpucp_ver);
391 static DEVICE_ATTR_RO(device_type);
392 static DEVICE_ATTR_RO(fuse_ver);
393 static DEVICE_ATTR_WO(hard_reset);
394 static DEVICE_ATTR_RO(hard_reset_cnt);
395 static DEVICE_ATTR_RW(max_power);
396 static DEVICE_ATTR_RO(pci_addr);
397 static DEVICE_ATTR_RO(preboot_btl_ver);
398 static DEVICE_ATTR_WO(soft_reset);
399 static DEVICE_ATTR_RO(soft_reset_cnt);
400 static DEVICE_ATTR_RO(status);
401 static DEVICE_ATTR_RO(thermal_ver);
402 static DEVICE_ATTR_RO(uboot_ver);
403 static DEVICE_ATTR_RO(fw_os_ver);
404 static DEVICE_ATTR_RO(security_enabled);
405 
406 static struct bin_attribute bin_attr_eeprom = {
407 	.attr = {.name = "eeprom", .mode = (0444)},
408 	.size = PAGE_SIZE,
409 	.read = eeprom_read_handler
410 };
411 
412 static struct attribute *hl_dev_attrs[] = {
413 	&dev_attr_armcp_kernel_ver.attr,
414 	&dev_attr_armcp_ver.attr,
415 	&dev_attr_cpld_ver.attr,
416 	&dev_attr_cpucp_kernel_ver.attr,
417 	&dev_attr_cpucp_ver.attr,
418 	&dev_attr_device_type.attr,
419 	&dev_attr_fuse_ver.attr,
420 	&dev_attr_hard_reset.attr,
421 	&dev_attr_hard_reset_cnt.attr,
422 	&dev_attr_max_power.attr,
423 	&dev_attr_pci_addr.attr,
424 	&dev_attr_preboot_btl_ver.attr,
425 	&dev_attr_status.attr,
426 	&dev_attr_thermal_ver.attr,
427 	&dev_attr_uboot_ver.attr,
428 	&dev_attr_fw_os_ver.attr,
429 	&dev_attr_security_enabled.attr,
430 	NULL,
431 };
432 
433 static struct bin_attribute *hl_dev_bin_attrs[] = {
434 	&bin_attr_eeprom,
435 	NULL
436 };
437 
438 static struct attribute_group hl_dev_attr_group = {
439 	.attrs = hl_dev_attrs,
440 	.bin_attrs = hl_dev_bin_attrs,
441 };
442 
443 static struct attribute_group hl_dev_clks_attr_group;
444 static struct attribute_group hl_dev_vrm_attr_group;
445 
446 static const struct attribute_group *hl_dev_attr_groups[] = {
447 	&hl_dev_attr_group,
448 	&hl_dev_clks_attr_group,
449 	&hl_dev_vrm_attr_group,
450 	NULL,
451 };
452 
453 static struct attribute *hl_dev_inference_attrs[] = {
454 	&dev_attr_soft_reset.attr,
455 	&dev_attr_soft_reset_cnt.attr,
456 	NULL,
457 };
458 
459 static struct attribute_group hl_dev_inference_attr_group = {
460 	.attrs = hl_dev_inference_attrs,
461 };
462 
463 static const struct attribute_group *hl_dev_inference_attr_groups[] = {
464 	&hl_dev_inference_attr_group,
465 	NULL,
466 };
467 
468 void hl_sysfs_add_dev_clk_attr(struct hl_device *hdev, struct attribute_group *dev_clk_attr_grp)
469 {
470 	dev_clk_attr_grp->attrs = hl_dev_clk_attrs;
471 }
472 
473 void hl_sysfs_add_dev_vrm_attr(struct hl_device *hdev, struct attribute_group *dev_vrm_attr_grp)
474 {
475 	dev_vrm_attr_grp->attrs = hl_dev_vrm_attrs;
476 }
477 
478 int hl_sysfs_init(struct hl_device *hdev)
479 {
480 	int rc;
481 
482 	hdev->max_power = hdev->asic_prop.max_power_default;
483 
484 	hdev->asic_funcs->add_device_attr(hdev, &hl_dev_clks_attr_group, &hl_dev_vrm_attr_group);
485 
486 	rc = device_add_groups(hdev->dev, hl_dev_attr_groups);
487 	if (rc) {
488 		dev_err(hdev->dev,
489 			"Failed to add groups to device, error %d\n", rc);
490 		return rc;
491 	}
492 
493 	if (!hdev->asic_prop.allow_inference_soft_reset)
494 		return 0;
495 
496 	rc = device_add_groups(hdev->dev, hl_dev_inference_attr_groups);
497 	if (rc) {
498 		dev_err(hdev->dev,
499 			"Failed to add groups to device, error %d\n", rc);
500 		goto remove_groups;
501 	}
502 
503 	return 0;
504 
505 remove_groups:
506 	device_remove_groups(hdev->dev, hl_dev_attr_groups);
507 	return rc;
508 }
509 
510 void hl_sysfs_fini(struct hl_device *hdev)
511 {
512 	device_remove_groups(hdev->dev, hl_dev_attr_groups);
513 
514 	if (!hdev->asic_prop.allow_inference_soft_reset)
515 		return;
516 
517 	device_remove_groups(hdev->dev, hl_dev_inference_attr_groups);
518 }
519