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  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
 12static 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
 29static 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
 51fail:
 52	return count;
 53}
 54
 55static 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
 70static DEVICE_ATTR_RW(clk_max_freq_mhz);
 71static DEVICE_ATTR_RO(clk_cur_freq_mhz);
 72
 73static 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
 79static 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
 93static DEVICE_ATTR_RO(vrm_ver);
 94
 95static struct attribute *hl_dev_vrm_attrs[] = {
 96	&dev_attr_vrm_ver.attr,
 97	NULL,
 98};
 99
100static 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
108static 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
116static 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
124static 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
133static 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
141static 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
149static 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
157static 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
165static 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
173static 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
181static 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
205out:
206	return count;
207}
208
209static 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
228out:
229	return count;
230}
231
232static 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
263static 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
275static 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
289static 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
297static 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
305static 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
321static 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
343out:
344	return count;
345}
346
347static 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
372out:
373	kfree(data);
374
375	return max_size;
376}
377
378static 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
386static DEVICE_ATTR_RO(armcp_kernel_ver);
387static DEVICE_ATTR_RO(armcp_ver);
388static DEVICE_ATTR_RO(cpld_ver);
389static DEVICE_ATTR_RO(cpucp_kernel_ver);
390static DEVICE_ATTR_RO(cpucp_ver);
391static DEVICE_ATTR_RO(device_type);
392static DEVICE_ATTR_RO(fuse_ver);
393static DEVICE_ATTR_WO(hard_reset);
394static DEVICE_ATTR_RO(hard_reset_cnt);
395static DEVICE_ATTR_RW(max_power);
396static DEVICE_ATTR_RO(pci_addr);
397static DEVICE_ATTR_RO(preboot_btl_ver);
398static DEVICE_ATTR_WO(soft_reset);
399static DEVICE_ATTR_RO(soft_reset_cnt);
400static DEVICE_ATTR_RO(status);
401static DEVICE_ATTR_RO(thermal_ver);
402static DEVICE_ATTR_RO(uboot_ver);
403static DEVICE_ATTR_RO(fw_os_ver);
404static DEVICE_ATTR_RO(security_enabled);
405
406static struct bin_attribute bin_attr_eeprom = {
407	.attr = {.name = "eeprom", .mode = (0444)},
408	.size = PAGE_SIZE,
409	.read = eeprom_read_handler
410};
411
412static 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
433static struct bin_attribute *hl_dev_bin_attrs[] = {
434	&bin_attr_eeprom,
435	NULL
436};
437
438static struct attribute_group hl_dev_attr_group = {
439	.attrs = hl_dev_attrs,
440	.bin_attrs = hl_dev_bin_attrs,
441};
442
443static struct attribute_group hl_dev_clks_attr_group;
444static struct attribute_group hl_dev_vrm_attr_group;
445
446static 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
453static struct attribute *hl_dev_inference_attrs[] = {
454	&dev_attr_soft_reset.attr,
455	&dev_attr_soft_reset_cnt.attr,
456	NULL,
457};
458
459static struct attribute_group hl_dev_inference_attr_group = {
460	.attrs = hl_dev_inference_attrs,
461};
462
463static const struct attribute_group *hl_dev_inference_attr_groups[] = {
464	&hl_dev_inference_attr_group,
465	NULL,
466};
467
468void 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
473void 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
478int 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		return rc;
501	}
502
503	return 0;
504}
505
506void hl_sysfs_fini(struct hl_device *hdev)
507{
508	device_remove_groups(hdev->dev, hl_dev_attr_groups);
509
510	if (!hdev->asic_prop.allow_inference_soft_reset)
511		return;
512
513	device_remove_groups(hdev->dev, hl_dev_inference_attr_groups);
514}