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
hl_get_frequency(struct hl_device * hdev,u32 pll_index,bool curr)12 long hl_get_frequency(struct hl_device *hdev, u32 pll_index, bool curr)
13 {
14 struct cpucp_packet pkt;
15 long result;
16 int rc;
17
18 memset(&pkt, 0, sizeof(pkt));
19
20 if (curr)
21 pkt.ctl = cpu_to_le32(CPUCP_PACKET_FREQUENCY_CURR_GET <<
22 CPUCP_PKT_CTL_OPCODE_SHIFT);
23 else
24 pkt.ctl = cpu_to_le32(CPUCP_PACKET_FREQUENCY_GET <<
25 CPUCP_PKT_CTL_OPCODE_SHIFT);
26 pkt.pll_index = cpu_to_le32(pll_index);
27
28 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
29 0, &result);
30
31 if (rc) {
32 dev_err(hdev->dev,
33 "Failed to get frequency of PLL %d, error %d\n",
34 pll_index, rc);
35 result = rc;
36 }
37
38 return result;
39 }
40
hl_set_frequency(struct hl_device * hdev,u32 pll_index,u64 freq)41 void hl_set_frequency(struct hl_device *hdev, u32 pll_index, u64 freq)
42 {
43 struct cpucp_packet pkt;
44 int rc;
45
46 memset(&pkt, 0, sizeof(pkt));
47
48 pkt.ctl = cpu_to_le32(CPUCP_PACKET_FREQUENCY_SET <<
49 CPUCP_PKT_CTL_OPCODE_SHIFT);
50 pkt.pll_index = cpu_to_le32(pll_index);
51 pkt.value = cpu_to_le64(freq);
52
53 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
54 0, NULL);
55
56 if (rc)
57 dev_err(hdev->dev,
58 "Failed to set frequency to PLL %d, error %d\n",
59 pll_index, rc);
60 }
61
hl_get_max_power(struct hl_device * hdev)62 u64 hl_get_max_power(struct hl_device *hdev)
63 {
64 struct cpucp_packet pkt;
65 long result;
66 int rc;
67
68 memset(&pkt, 0, sizeof(pkt));
69
70 pkt.ctl = cpu_to_le32(CPUCP_PACKET_MAX_POWER_GET <<
71 CPUCP_PKT_CTL_OPCODE_SHIFT);
72
73 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
74 0, &result);
75
76 if (rc) {
77 dev_err(hdev->dev, "Failed to get max power, error %d\n", rc);
78 result = rc;
79 }
80
81 return result;
82 }
83
hl_set_max_power(struct hl_device * hdev)84 void hl_set_max_power(struct hl_device *hdev)
85 {
86 struct cpucp_packet pkt;
87 int rc;
88
89 memset(&pkt, 0, sizeof(pkt));
90
91 pkt.ctl = cpu_to_le32(CPUCP_PACKET_MAX_POWER_SET <<
92 CPUCP_PKT_CTL_OPCODE_SHIFT);
93 pkt.value = cpu_to_le64(hdev->max_power);
94
95 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
96 0, NULL);
97
98 if (rc)
99 dev_err(hdev->dev, "Failed to set max power, error %d\n", rc);
100 }
101
uboot_ver_show(struct device * dev,struct device_attribute * attr,char * buf)102 static ssize_t uboot_ver_show(struct device *dev, struct device_attribute *attr,
103 char *buf)
104 {
105 struct hl_device *hdev = dev_get_drvdata(dev);
106
107 return sprintf(buf, "%s\n", hdev->asic_prop.uboot_ver);
108 }
109
armcp_kernel_ver_show(struct device * dev,struct device_attribute * attr,char * buf)110 static ssize_t armcp_kernel_ver_show(struct device *dev,
111 struct device_attribute *attr, char *buf)
112 {
113 struct hl_device *hdev = dev_get_drvdata(dev);
114
115 return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.kernel_version);
116 }
117
armcp_ver_show(struct device * dev,struct device_attribute * attr,char * buf)118 static ssize_t armcp_ver_show(struct device *dev, struct device_attribute *attr,
119 char *buf)
120 {
121 struct hl_device *hdev = dev_get_drvdata(dev);
122
123 return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.cpucp_version);
124 }
125
cpld_ver_show(struct device * dev,struct device_attribute * attr,char * buf)126 static ssize_t cpld_ver_show(struct device *dev, struct device_attribute *attr,
127 char *buf)
128 {
129 struct hl_device *hdev = dev_get_drvdata(dev);
130
131 return sprintf(buf, "0x%08x\n",
132 hdev->asic_prop.cpucp_info.cpld_version);
133 }
134
cpucp_kernel_ver_show(struct device * dev,struct device_attribute * attr,char * buf)135 static ssize_t cpucp_kernel_ver_show(struct device *dev,
136 struct device_attribute *attr, char *buf)
137 {
138 struct hl_device *hdev = dev_get_drvdata(dev);
139
140 return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.kernel_version);
141 }
142
cpucp_ver_show(struct device * dev,struct device_attribute * attr,char * buf)143 static ssize_t cpucp_ver_show(struct device *dev, struct device_attribute *attr,
144 char *buf)
145 {
146 struct hl_device *hdev = dev_get_drvdata(dev);
147
148 return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.cpucp_version);
149 }
150
infineon_ver_show(struct device * dev,struct device_attribute * attr,char * buf)151 static ssize_t infineon_ver_show(struct device *dev,
152 struct device_attribute *attr, char *buf)
153 {
154 struct hl_device *hdev = dev_get_drvdata(dev);
155
156 return sprintf(buf, "0x%04x\n",
157 hdev->asic_prop.cpucp_info.infineon_version);
158 }
159
fuse_ver_show(struct device * dev,struct device_attribute * attr,char * buf)160 static ssize_t fuse_ver_show(struct device *dev, struct device_attribute *attr,
161 char *buf)
162 {
163 struct hl_device *hdev = dev_get_drvdata(dev);
164
165 return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.fuse_version);
166 }
167
thermal_ver_show(struct device * dev,struct device_attribute * attr,char * buf)168 static ssize_t thermal_ver_show(struct device *dev,
169 struct device_attribute *attr, char *buf)
170 {
171 struct hl_device *hdev = dev_get_drvdata(dev);
172
173 return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.thermal_version);
174 }
175
preboot_btl_ver_show(struct device * dev,struct device_attribute * attr,char * buf)176 static ssize_t preboot_btl_ver_show(struct device *dev,
177 struct device_attribute *attr, char *buf)
178 {
179 struct hl_device *hdev = dev_get_drvdata(dev);
180
181 return sprintf(buf, "%s\n", hdev->asic_prop.preboot_ver);
182 }
183
soft_reset_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)184 static ssize_t soft_reset_store(struct device *dev,
185 struct device_attribute *attr, const char *buf,
186 size_t count)
187 {
188 struct hl_device *hdev = dev_get_drvdata(dev);
189 long value;
190 int rc;
191
192 rc = kstrtoul(buf, 0, &value);
193
194 if (rc) {
195 count = -EINVAL;
196 goto out;
197 }
198
199 if (!hdev->supports_soft_reset) {
200 dev_err(hdev->dev, "Device does not support soft-reset\n");
201 goto out;
202 }
203
204 dev_warn(hdev->dev, "Soft-Reset requested through sysfs\n");
205
206 hl_device_reset(hdev, false, false);
207
208 out:
209 return count;
210 }
211
hard_reset_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)212 static ssize_t hard_reset_store(struct device *dev,
213 struct device_attribute *attr,
214 const char *buf, size_t count)
215 {
216 struct hl_device *hdev = dev_get_drvdata(dev);
217 long value;
218 int rc;
219
220 rc = kstrtoul(buf, 0, &value);
221
222 if (rc) {
223 count = -EINVAL;
224 goto out;
225 }
226
227 dev_warn(hdev->dev, "Hard-Reset requested through sysfs\n");
228
229 hl_device_reset(hdev, true, false);
230
231 out:
232 return count;
233 }
234
device_type_show(struct device * dev,struct device_attribute * attr,char * buf)235 static ssize_t device_type_show(struct device *dev,
236 struct device_attribute *attr, char *buf)
237 {
238 struct hl_device *hdev = dev_get_drvdata(dev);
239 char *str;
240
241 switch (hdev->asic_type) {
242 case ASIC_GOYA:
243 str = "GOYA";
244 break;
245 case ASIC_GAUDI:
246 str = "GAUDI";
247 break;
248 default:
249 dev_err(hdev->dev, "Unrecognized ASIC type %d\n",
250 hdev->asic_type);
251 return -EINVAL;
252 }
253
254 return sprintf(buf, "%s\n", str);
255 }
256
pci_addr_show(struct device * dev,struct device_attribute * attr,char * buf)257 static ssize_t pci_addr_show(struct device *dev, struct device_attribute *attr,
258 char *buf)
259 {
260 struct hl_device *hdev = dev_get_drvdata(dev);
261
262 return sprintf(buf, "%04x:%02x:%02x.%x\n",
263 pci_domain_nr(hdev->pdev->bus),
264 hdev->pdev->bus->number,
265 PCI_SLOT(hdev->pdev->devfn),
266 PCI_FUNC(hdev->pdev->devfn));
267 }
268
status_show(struct device * dev,struct device_attribute * attr,char * buf)269 static ssize_t status_show(struct device *dev, struct device_attribute *attr,
270 char *buf)
271 {
272 struct hl_device *hdev = dev_get_drvdata(dev);
273 char *str;
274
275 if (atomic_read(&hdev->in_reset))
276 str = "In reset";
277 else if (hdev->disabled)
278 str = "Malfunction";
279 else
280 str = "Operational";
281
282 return sprintf(buf, "%s\n", str);
283 }
284
soft_reset_cnt_show(struct device * dev,struct device_attribute * attr,char * buf)285 static ssize_t soft_reset_cnt_show(struct device *dev,
286 struct device_attribute *attr, char *buf)
287 {
288 struct hl_device *hdev = dev_get_drvdata(dev);
289
290 return sprintf(buf, "%d\n", hdev->soft_reset_cnt);
291 }
292
hard_reset_cnt_show(struct device * dev,struct device_attribute * attr,char * buf)293 static ssize_t hard_reset_cnt_show(struct device *dev,
294 struct device_attribute *attr, char *buf)
295 {
296 struct hl_device *hdev = dev_get_drvdata(dev);
297
298 return sprintf(buf, "%d\n", hdev->hard_reset_cnt);
299 }
300
max_power_show(struct device * dev,struct device_attribute * attr,char * buf)301 static ssize_t max_power_show(struct device *dev, struct device_attribute *attr,
302 char *buf)
303 {
304 struct hl_device *hdev = dev_get_drvdata(dev);
305 long val;
306
307 if (hl_device_disabled_or_in_reset(hdev))
308 return -ENODEV;
309
310 val = hl_get_max_power(hdev);
311
312 return sprintf(buf, "%lu\n", val);
313 }
314
max_power_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)315 static ssize_t max_power_store(struct device *dev,
316 struct device_attribute *attr, const char *buf, size_t count)
317 {
318 struct hl_device *hdev = dev_get_drvdata(dev);
319 unsigned long value;
320 int rc;
321
322 if (hl_device_disabled_or_in_reset(hdev)) {
323 count = -ENODEV;
324 goto out;
325 }
326
327 rc = kstrtoul(buf, 0, &value);
328
329 if (rc) {
330 count = -EINVAL;
331 goto out;
332 }
333
334 hdev->max_power = value;
335 hl_set_max_power(hdev);
336
337 out:
338 return count;
339 }
340
eeprom_read_handler(struct file * filp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t offset,size_t max_size)341 static ssize_t eeprom_read_handler(struct file *filp, struct kobject *kobj,
342 struct bin_attribute *attr, char *buf, loff_t offset,
343 size_t max_size)
344 {
345 struct device *dev = container_of(kobj, struct device, kobj);
346 struct hl_device *hdev = dev_get_drvdata(dev);
347 char *data;
348 int rc;
349
350 if (hl_device_disabled_or_in_reset(hdev))
351 return -ENODEV;
352
353 if (!max_size)
354 return -EINVAL;
355
356 data = kzalloc(max_size, GFP_KERNEL);
357 if (!data)
358 return -ENOMEM;
359
360 rc = hdev->asic_funcs->get_eeprom_data(hdev, data, max_size);
361 if (rc)
362 goto out;
363
364 memcpy(buf, data, max_size);
365
366 out:
367 kfree(data);
368
369 return max_size;
370 }
371
372 static DEVICE_ATTR_RO(armcp_kernel_ver);
373 static DEVICE_ATTR_RO(armcp_ver);
374 static DEVICE_ATTR_RO(cpld_ver);
375 static DEVICE_ATTR_RO(cpucp_kernel_ver);
376 static DEVICE_ATTR_RO(cpucp_ver);
377 static DEVICE_ATTR_RO(device_type);
378 static DEVICE_ATTR_RO(fuse_ver);
379 static DEVICE_ATTR_WO(hard_reset);
380 static DEVICE_ATTR_RO(hard_reset_cnt);
381 static DEVICE_ATTR_RO(infineon_ver);
382 static DEVICE_ATTR_RW(max_power);
383 static DEVICE_ATTR_RO(pci_addr);
384 static DEVICE_ATTR_RO(preboot_btl_ver);
385 static DEVICE_ATTR_WO(soft_reset);
386 static DEVICE_ATTR_RO(soft_reset_cnt);
387 static DEVICE_ATTR_RO(status);
388 static DEVICE_ATTR_RO(thermal_ver);
389 static DEVICE_ATTR_RO(uboot_ver);
390
391 static struct bin_attribute bin_attr_eeprom = {
392 .attr = {.name = "eeprom", .mode = (0444)},
393 .size = PAGE_SIZE,
394 .read = eeprom_read_handler
395 };
396
397 static struct attribute *hl_dev_attrs[] = {
398 &dev_attr_armcp_kernel_ver.attr,
399 &dev_attr_armcp_ver.attr,
400 &dev_attr_cpld_ver.attr,
401 &dev_attr_cpucp_kernel_ver.attr,
402 &dev_attr_cpucp_ver.attr,
403 &dev_attr_device_type.attr,
404 &dev_attr_fuse_ver.attr,
405 &dev_attr_hard_reset.attr,
406 &dev_attr_hard_reset_cnt.attr,
407 &dev_attr_infineon_ver.attr,
408 &dev_attr_max_power.attr,
409 &dev_attr_pci_addr.attr,
410 &dev_attr_preboot_btl_ver.attr,
411 &dev_attr_soft_reset.attr,
412 &dev_attr_soft_reset_cnt.attr,
413 &dev_attr_status.attr,
414 &dev_attr_thermal_ver.attr,
415 &dev_attr_uboot_ver.attr,
416 NULL,
417 };
418
419 static struct bin_attribute *hl_dev_bin_attrs[] = {
420 &bin_attr_eeprom,
421 NULL
422 };
423
424 static struct attribute_group hl_dev_attr_group = {
425 .attrs = hl_dev_attrs,
426 .bin_attrs = hl_dev_bin_attrs,
427 };
428
429 static struct attribute_group hl_dev_clks_attr_group;
430
431 static const struct attribute_group *hl_dev_attr_groups[] = {
432 &hl_dev_attr_group,
433 &hl_dev_clks_attr_group,
434 NULL,
435 };
436
hl_sysfs_init(struct hl_device * hdev)437 int hl_sysfs_init(struct hl_device *hdev)
438 {
439 int rc;
440
441 if (hdev->asic_type == ASIC_GOYA)
442 hdev->pm_mng_profile = PM_AUTO;
443 else
444 hdev->pm_mng_profile = PM_MANUAL;
445
446 hdev->max_power = hdev->asic_prop.max_power_default;
447
448 hdev->asic_funcs->add_device_attr(hdev, &hl_dev_clks_attr_group);
449
450 rc = device_add_groups(hdev->dev, hl_dev_attr_groups);
451 if (rc) {
452 dev_err(hdev->dev,
453 "Failed to add groups to device, error %d\n", rc);
454 return rc;
455 }
456
457 return 0;
458 }
459
hl_sysfs_fini(struct hl_device * hdev)460 void hl_sysfs_fini(struct hl_device *hdev)
461 {
462 device_remove_groups(hdev->dev, hl_dev_attr_groups);
463 }
464
