sysfs.c

  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#include <linux/types.h>
 12
 13static ssize_t clk_max_freq_mhz_show(struct device *dev, struct device_attribute *attr, char *buf)
 14{
 15	struct hl_device *hdev = dev_get_drvdata(dev);
 16	long value;
 17
 18	if (!hl_device_operational(hdev, NULL))
 19		return -ENODEV;
 20
 21	value = hl_fw_get_frequency(hdev, hdev->asic_prop.clk_pll_index, false);
 22	if (value < 0)
 23		return value;
 24
 25	hdev->asic_prop.max_freq_value = value;
 26
 27	return sprintf(buf, "%lu\n", (value / 1000 / 1000));
 28}
 29
 30static ssize_t clk_max_freq_mhz_store(struct device *dev, struct device_attribute *attr,
 31					const char *buf, size_t count)
 32{
 33	struct hl_device *hdev = dev_get_drvdata(dev);
 34	int rc;
 35	u64 value;
 36
 37	if (!hl_device_operational(hdev, NULL)) {
 38		count = -ENODEV;
 39		goto fail;
 40	}
 41
 42	rc = kstrtoull(buf, 0, &value);
 43	if (rc) {
 44		count = -EINVAL;
 45		goto fail;
 46	}
 47
 48	hdev->asic_prop.max_freq_value = value * 1000 * 1000;
 49
 50	hl_fw_set_frequency(hdev, hdev->asic_prop.clk_pll_index, hdev->asic_prop.max_freq_value);
 51
 52fail:
 53	return count;
 54}
 55
 56static ssize_t clk_cur_freq_mhz_show(struct device *dev, struct device_attribute *attr, char *buf)
 57{
 58	struct hl_device *hdev = dev_get_drvdata(dev);
 59	long value;
 60
 61	if (!hl_device_operational(hdev, NULL))
 62		return -ENODEV;
 63
 64	value = hl_fw_get_frequency(hdev, hdev->asic_prop.clk_pll_index, true);
 65	if (value < 0)
 66		return value;
 67
 68	return sprintf(buf, "%lu\n", (value / 1000 / 1000));
 69}
 70
 71static DEVICE_ATTR_RW(clk_max_freq_mhz);
 72static DEVICE_ATTR_RO(clk_cur_freq_mhz);
 73
 74static struct attribute *hl_dev_clk_attrs[] = {
 75	&dev_attr_clk_max_freq_mhz.attr,
 76	&dev_attr_clk_cur_freq_mhz.attr,
 77	NULL,
 78};
 79
 80static ssize_t vrm_ver_show(struct device *dev, struct device_attribute *attr, char *buf)
 81{
 82	struct hl_device *hdev = dev_get_drvdata(dev);
 83	struct cpucp_info *cpucp_info;
 84	u32 infineon_second_stage_version;
 85	u32 infineon_second_stage_first_instance;
 86	u32 infineon_second_stage_second_instance;
 87	u32 infineon_second_stage_third_instance;
 88	u32 mask = 0xff;
 89
 90	cpucp_info = &hdev->asic_prop.cpucp_info;
 91
 92	infineon_second_stage_version = le32_to_cpu(cpucp_info->infineon_second_stage_version);
 93	infineon_second_stage_first_instance = infineon_second_stage_version & mask;
 94	infineon_second_stage_second_instance =
 95					(infineon_second_stage_version >> 8) & mask;
 96	infineon_second_stage_third_instance =
 97					(infineon_second_stage_version >> 16) & mask;
 98
 99	if (cpucp_info->infineon_version && cpucp_info->infineon_second_stage_version)
100		return sprintf(buf, "%#04x %#04x:%#04x:%#04x\n",
101				le32_to_cpu(cpucp_info->infineon_version),
102				infineon_second_stage_first_instance,
103				infineon_second_stage_second_instance,
104				infineon_second_stage_third_instance);
105	else if (cpucp_info->infineon_second_stage_version)
106		return sprintf(buf, "%#04x:%#04x:%#04x\n",
107				infineon_second_stage_first_instance,
108				infineon_second_stage_second_instance,
109				infineon_second_stage_third_instance);
110	else if (cpucp_info->infineon_version)
111		return sprintf(buf, "%#04x\n", le32_to_cpu(cpucp_info->infineon_version));
112
113	return 0;
114}
115
116static DEVICE_ATTR_RO(vrm_ver);
117
118static struct attribute *hl_dev_vrm_attrs[] = {
119	&dev_attr_vrm_ver.attr,
120	NULL,
121};
122
123static ssize_t uboot_ver_show(struct device *dev, struct device_attribute *attr,
124				char *buf)
125{
126	struct hl_device *hdev = dev_get_drvdata(dev);
127
128	return sprintf(buf, "%s\n", hdev->asic_prop.uboot_ver);
129}
130
131static ssize_t armcp_kernel_ver_show(struct device *dev,
132				struct device_attribute *attr, char *buf)
133{
134	struct hl_device *hdev = dev_get_drvdata(dev);
135
136	return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.kernel_version);
137}
138
139static ssize_t armcp_ver_show(struct device *dev, struct device_attribute *attr,
140				char *buf)
141{
142	struct hl_device *hdev = dev_get_drvdata(dev);
143
144	return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.cpucp_version);
145}
146
147static ssize_t cpld_ver_show(struct device *dev, struct device_attribute *attr,
148				char *buf)
149{
150	struct hl_device *hdev = dev_get_drvdata(dev);
151
152	return sprintf(buf, "0x%08x%08x\n",
153		le32_to_cpu(hdev->asic_prop.cpucp_info.cpld_timestamp),
154		le32_to_cpu(hdev->asic_prop.cpucp_info.cpld_version));
155}
156
157static ssize_t cpucp_kernel_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.kernel_version);
163}
164
165static ssize_t cpucp_ver_show(struct device *dev, struct device_attribute *attr,
166				char *buf)
167{
168	struct hl_device *hdev = dev_get_drvdata(dev);
169
170	return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.cpucp_version);
171}
172
173static ssize_t fuse_ver_show(struct device *dev, struct device_attribute *attr,
174				char *buf)
175{
176	struct hl_device *hdev = dev_get_drvdata(dev);
177
178	return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.fuse_version);
179}
180
181static ssize_t thermal_ver_show(struct device *dev,
182				struct device_attribute *attr, char *buf)
183{
184	struct hl_device *hdev = dev_get_drvdata(dev);
185
186	return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.thermal_version);
187}
188
189static ssize_t fw_os_ver_show(struct device *dev,
190				struct device_attribute *attr, char *buf)
191{
192	struct hl_device *hdev = dev_get_drvdata(dev);
193
194	return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.fw_os_version);
195}
196
197static ssize_t preboot_btl_ver_show(struct device *dev,
198				struct device_attribute *attr, char *buf)
199{
200	struct hl_device *hdev = dev_get_drvdata(dev);
201
202	return sprintf(buf, "%s\n", hdev->asic_prop.preboot_ver);
203}
204
205static ssize_t soft_reset_store(struct device *dev,
206				struct device_attribute *attr, const char *buf,
207				size_t count)
208{
209	struct hl_device *hdev = dev_get_drvdata(dev);
210	long value;
211	int rc;
212
213	rc = kstrtoul(buf, 0, &value);
214
215	if (rc) {
216		count = -EINVAL;
217		goto out;
218	}
219
220	if (!hdev->asic_prop.allow_inference_soft_reset) {
221		dev_err(hdev->dev, "Device does not support inference soft-reset\n");
222		goto out;
223	}
224
225	dev_warn(hdev->dev, "Inference Soft-Reset requested through sysfs\n");
226
227	hl_device_reset(hdev, 0);
228
229out:
230	return count;
231}
232
233static ssize_t hard_reset_store(struct device *dev,
234				struct device_attribute *attr,
235				const char *buf, size_t count)
236{
237	struct hl_device *hdev = dev_get_drvdata(dev);
238	long value;
239	int rc;
240
241	rc = kstrtoul(buf, 0, &value);
242
243	if (rc) {
244		count = -EINVAL;
245		goto out;
246	}
247
248	dev_warn(hdev->dev, "Hard-Reset requested through sysfs\n");
249
250	hl_device_reset(hdev, HL_DRV_RESET_HARD);
251
252out:
253	return count;
254}
255
256static ssize_t device_type_show(struct device *dev,
257		struct device_attribute *attr, char *buf)
258{
259	struct hl_device *hdev = dev_get_drvdata(dev);
260	char *str;
261
262	switch (hdev->asic_type) {
263	case ASIC_GOYA:
264		str = "GOYA";
265		break;
266	case ASIC_GAUDI:
267		str = "GAUDI";
268		break;
269	case ASIC_GAUDI_SEC:
270		str = "GAUDI SEC";
271		break;
272	case ASIC_GAUDI2:
273		str = "GAUDI2";
274		break;
275	case ASIC_GAUDI2B:
276		str = "GAUDI2B";
277		break;
278	case ASIC_GAUDI2C:
279		str = "GAUDI2C";
280		break;
281	case ASIC_GAUDI2D:
282		str = "GAUDI2D";
283		break;
284	default:
285		dev_err(hdev->dev, "Unrecognized ASIC type %d\n",
286				hdev->asic_type);
287		return -EINVAL;
288	}
289
290	return sprintf(buf, "%s\n", str);
291}
292
293static ssize_t pci_addr_show(struct device *dev, struct device_attribute *attr,
294				char *buf)
295{
296	struct hl_device *hdev = dev_get_drvdata(dev);
297
298	return sprintf(buf, "%04x:%02x:%02x.%x\n",
299			pci_domain_nr(hdev->pdev->bus),
300			hdev->pdev->bus->number,
301			PCI_SLOT(hdev->pdev->devfn),
302			PCI_FUNC(hdev->pdev->devfn));
303}
304
305static ssize_t status_show(struct device *dev, struct device_attribute *attr,
306				char *buf)
307{
308	struct hl_device *hdev = dev_get_drvdata(dev);
309	char str[HL_STR_MAX];
310
311	strscpy(str, hdev->status[hl_device_status(hdev)], HL_STR_MAX);
312
313	/* use uppercase for backward compatibility */
314	str[0] = 'A' + (str[0] - 'a');
315
316	return sprintf(buf, "%s\n", str);
317}
318
319static ssize_t soft_reset_cnt_show(struct device *dev,
320		struct device_attribute *attr, char *buf)
321{
322	struct hl_device *hdev = dev_get_drvdata(dev);
323
324	return sprintf(buf, "%d\n", hdev->reset_info.compute_reset_cnt);
325}
326
327static ssize_t hard_reset_cnt_show(struct device *dev,
328		struct device_attribute *attr, char *buf)
329{
330	struct hl_device *hdev = dev_get_drvdata(dev);
331
332	return sprintf(buf, "%d\n", hdev->reset_info.hard_reset_cnt);
333}
334
335static ssize_t max_power_show(struct device *dev, struct device_attribute *attr,
336				char *buf)
337{
338	struct hl_device *hdev = dev_get_drvdata(dev);
339	long val;
340
341	if (!hl_device_operational(hdev, NULL))
342		return -ENODEV;
343
344	val = hl_fw_get_max_power(hdev);
345	if (val < 0)
346		return val;
347
348	return sprintf(buf, "%lu\n", val);
349}
350
351static ssize_t max_power_store(struct device *dev,
352		struct device_attribute *attr, const char *buf, size_t count)
353{
354	struct hl_device *hdev = dev_get_drvdata(dev);
355	unsigned long value;
356	int rc;
357
358	if (!hl_device_operational(hdev, NULL)) {
359		count = -ENODEV;
360		goto out;
361	}
362
363	rc = kstrtoul(buf, 0, &value);
364
365	if (rc) {
366		count = -EINVAL;
367		goto out;
368	}
369
370	hdev->max_power = value;
371	hl_fw_set_max_power(hdev);
372
373out:
374	return count;
375}
376
377static ssize_t eeprom_read_handler(struct file *filp, struct kobject *kobj,
378			const struct bin_attribute *attr, char *buf, loff_t offset,
379			size_t max_size)
380{
381	struct device *dev = kobj_to_dev(kobj);
382	struct hl_device *hdev = dev_get_drvdata(dev);
383	char *data;
384	int rc;
385
386	if (!hl_device_operational(hdev, NULL))
387		return -ENODEV;
388
389	if (!max_size)
390		return -EINVAL;
391
392	data = kzalloc(max_size, GFP_KERNEL);
393	if (!data)
394		return -ENOMEM;
395
396	rc = hdev->asic_funcs->get_eeprom_data(hdev, data, max_size);
397	if (rc)
398		goto out;
399
400	memcpy(buf, data, max_size);
401
402out:
403	kfree(data);
404
405	return max_size;
406}
407
408static ssize_t security_enabled_show(struct device *dev,
409				struct device_attribute *attr, char *buf)
410{
411	struct hl_device *hdev = dev_get_drvdata(dev);
412
413	return sprintf(buf, "%d\n", hdev->asic_prop.fw_security_enabled);
414}
415
416static ssize_t module_id_show(struct device *dev,
417				struct device_attribute *attr, char *buf)
418{
419	struct hl_device *hdev = dev_get_drvdata(dev);
420
421	return sprintf(buf, "%u\n", le32_to_cpu(hdev->asic_prop.cpucp_info.card_location));
422}
423
424static ssize_t parent_device_show(struct device *dev, struct device_attribute *attr, char *buf)
425{
426	struct hl_device *hdev = dev_get_drvdata(dev);
427
428	return sprintf(buf, "%s\n", HL_DEV_NAME(hdev));
429}
430
431static DEVICE_ATTR_RO(armcp_kernel_ver);
432static DEVICE_ATTR_RO(armcp_ver);
433static DEVICE_ATTR_RO(cpld_ver);
434static DEVICE_ATTR_RO(cpucp_kernel_ver);
435static DEVICE_ATTR_RO(cpucp_ver);
436static DEVICE_ATTR_RO(device_type);
437static DEVICE_ATTR_RO(fuse_ver);
438static DEVICE_ATTR_WO(hard_reset);
439static DEVICE_ATTR_RO(hard_reset_cnt);
440static DEVICE_ATTR_RW(max_power);
441static DEVICE_ATTR_RO(pci_addr);
442static DEVICE_ATTR_RO(preboot_btl_ver);
443static DEVICE_ATTR_WO(soft_reset);
444static DEVICE_ATTR_RO(soft_reset_cnt);
445static DEVICE_ATTR_RO(status);
446static DEVICE_ATTR_RO(thermal_ver);
447static DEVICE_ATTR_RO(uboot_ver);
448static DEVICE_ATTR_RO(fw_os_ver);
449static DEVICE_ATTR_RO(security_enabled);
450static DEVICE_ATTR_RO(module_id);
451static DEVICE_ATTR_RO(parent_device);
452
453static const struct bin_attribute bin_attr_eeprom = {
454	.attr = {.name = "eeprom", .mode = (0444)},
455	.size = PAGE_SIZE,
456	.read = eeprom_read_handler
457};
458
459static struct attribute *hl_dev_attrs[] = {
460	&dev_attr_armcp_kernel_ver.attr,
461	&dev_attr_armcp_ver.attr,
462	&dev_attr_cpld_ver.attr,
463	&dev_attr_cpucp_kernel_ver.attr,
464	&dev_attr_cpucp_ver.attr,
465	&dev_attr_device_type.attr,
466	&dev_attr_fuse_ver.attr,
467	&dev_attr_hard_reset.attr,
468	&dev_attr_hard_reset_cnt.attr,
469	&dev_attr_max_power.attr,
470	&dev_attr_pci_addr.attr,
471	&dev_attr_preboot_btl_ver.attr,
472	&dev_attr_status.attr,
473	&dev_attr_thermal_ver.attr,
474	&dev_attr_uboot_ver.attr,
475	&dev_attr_fw_os_ver.attr,
476	&dev_attr_security_enabled.attr,
477	&dev_attr_module_id.attr,
478	&dev_attr_parent_device.attr,
479	NULL,
480};
481
482static const struct bin_attribute *const hl_dev_bin_attrs[] = {
483	&bin_attr_eeprom,
484	NULL
485};
486
487static struct attribute_group hl_dev_attr_group = {
488	.attrs = hl_dev_attrs,
489	.bin_attrs = hl_dev_bin_attrs,
490};
491
492static struct attribute_group hl_dev_clks_attr_group;
493static struct attribute_group hl_dev_vrm_attr_group;
494
495static const struct attribute_group *hl_dev_attr_groups[] = {
496	&hl_dev_attr_group,
497	&hl_dev_clks_attr_group,
498	&hl_dev_vrm_attr_group,
499	NULL,
500};
501
502static struct attribute *hl_dev_inference_attrs[] = {
503	&dev_attr_soft_reset.attr,
504	&dev_attr_soft_reset_cnt.attr,
505	NULL,
506};
507
508static struct attribute_group hl_dev_inference_attr_group = {
509	.attrs = hl_dev_inference_attrs,
510};
511
512static const struct attribute_group *hl_dev_inference_attr_groups[] = {
513	&hl_dev_inference_attr_group,
514	NULL,
515};
516
517void hl_sysfs_add_dev_clk_attr(struct hl_device *hdev, struct attribute_group *dev_clk_attr_grp)
518{
519	dev_clk_attr_grp->attrs = hl_dev_clk_attrs;
520}
521
522void hl_sysfs_add_dev_vrm_attr(struct hl_device *hdev, struct attribute_group *dev_vrm_attr_grp)
523{
524	dev_vrm_attr_grp->attrs = hl_dev_vrm_attrs;
525}
526
527int hl_sysfs_init(struct hl_device *hdev)
528{
529	int rc;
530
531	hdev->max_power = hdev->asic_prop.max_power_default;
532
533	hdev->asic_funcs->add_device_attr(hdev, &hl_dev_clks_attr_group, &hl_dev_vrm_attr_group);
534
535	rc = device_add_groups(hdev->dev, hl_dev_attr_groups);
536	if (rc) {
537		dev_err(hdev->dev,
538			"Failed to add groups to device, error %d\n", rc);
539		return rc;
540	}
541
542	if (!hdev->asic_prop.allow_inference_soft_reset)
543		return 0;
544
545	rc = device_add_groups(hdev->dev, hl_dev_inference_attr_groups);
546	if (rc) {
547		dev_err(hdev->dev,
548			"Failed to add groups to device, error %d\n", rc);
549		goto remove_groups;
550	}
551
552	return 0;
553
554remove_groups:
555	device_remove_groups(hdev->dev, hl_dev_attr_groups);
556	return rc;
557}
558
559void hl_sysfs_fini(struct hl_device *hdev)
560{
561	device_remove_groups(hdev->dev, hl_dev_attr_groups);
562
563	if (!hdev->asic_prop.allow_inference_soft_reset)
564		return;
565
566	device_remove_groups(hdev->dev, hl_dev_inference_attr_groups);
567}