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
12 #define SET_CLK_PKT_TIMEOUT 1000000 /* 1s */
13 #define SET_PWR_PKT_TIMEOUT 1000000 /* 1s */
14
hl_get_frequency(struct hl_device * hdev,u32 pll_index,bool curr)15 long hl_get_frequency(struct hl_device *hdev, u32 pll_index, bool curr)
16 {
17 struct armcp_packet pkt;
18 long result;
19 int rc;
20
21 memset(&pkt, 0, sizeof(pkt));
22
23 if (curr)
24 pkt.ctl = cpu_to_le32(ARMCP_PACKET_FREQUENCY_CURR_GET <<
25 ARMCP_PKT_CTL_OPCODE_SHIFT);
26 else
27 pkt.ctl = cpu_to_le32(ARMCP_PACKET_FREQUENCY_GET <<
28 ARMCP_PKT_CTL_OPCODE_SHIFT);
29 pkt.pll_index = cpu_to_le32(pll_index);
30
31 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
32 SET_CLK_PKT_TIMEOUT, &result);
33
34 if (rc) {
35 dev_err(hdev->dev,
36 "Failed to get frequency of PLL %d, error %d\n",
37 pll_index, rc);
38 result = rc;
39 }
40
41 return result;
42 }
43
hl_set_frequency(struct hl_device * hdev,u32 pll_index,u64 freq)44 void hl_set_frequency(struct hl_device *hdev, u32 pll_index, u64 freq)
45 {
46 struct armcp_packet pkt;
47 int rc;
48
49 memset(&pkt, 0, sizeof(pkt));
50
51 pkt.ctl = cpu_to_le32(ARMCP_PACKET_FREQUENCY_SET <<
52 ARMCP_PKT_CTL_OPCODE_SHIFT);
53 pkt.pll_index = cpu_to_le32(pll_index);
54 pkt.value = cpu_to_le64(freq);
55
56 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
57 SET_CLK_PKT_TIMEOUT, NULL);
58
59 if (rc)
60 dev_err(hdev->dev,
61 "Failed to set frequency to PLL %d, error %d\n",
62 pll_index, rc);
63 }
64
hl_get_max_power(struct hl_device * hdev)65 u64 hl_get_max_power(struct hl_device *hdev)
66 {
67 struct armcp_packet pkt;
68 long result;
69 int rc;
70
71 memset(&pkt, 0, sizeof(pkt));
72
73 pkt.ctl = cpu_to_le32(ARMCP_PACKET_MAX_POWER_GET <<
74 ARMCP_PKT_CTL_OPCODE_SHIFT);
75
76 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
77 SET_PWR_PKT_TIMEOUT, &result);
78
79 if (rc) {
80 dev_err(hdev->dev, "Failed to get max power, error %d\n", rc);
81 result = rc;
82 }
83
84 return result;
85 }
86
hl_set_max_power(struct hl_device * hdev,u64 value)87 void hl_set_max_power(struct hl_device *hdev, u64 value)
88 {
89 struct armcp_packet pkt;
90 int rc;
91
92 memset(&pkt, 0, sizeof(pkt));
93
94 pkt.ctl = cpu_to_le32(ARMCP_PACKET_MAX_POWER_SET <<
95 ARMCP_PKT_CTL_OPCODE_SHIFT);
96 pkt.value = cpu_to_le64(value);
97
98 rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
99 SET_PWR_PKT_TIMEOUT, NULL);
100
101 if (rc)
102 dev_err(hdev->dev, "Failed to set max power, error %d\n", rc);
103 }
104
uboot_ver_show(struct device * dev,struct device_attribute * attr,char * buf)105 static ssize_t uboot_ver_show(struct device *dev, struct device_attribute *attr,
106 char *buf)
107 {
108 struct hl_device *hdev = dev_get_drvdata(dev);
109
110 return sprintf(buf, "%s\n", hdev->asic_prop.uboot_ver);
111 }
112
armcp_kernel_ver_show(struct device * dev,struct device_attribute * attr,char * buf)113 static ssize_t armcp_kernel_ver_show(struct device *dev,
114 struct device_attribute *attr, char *buf)
115 {
116 struct hl_device *hdev = dev_get_drvdata(dev);
117
118 return sprintf(buf, "%s", hdev->asic_prop.armcp_info.kernel_version);
119 }
120
armcp_ver_show(struct device * dev,struct device_attribute * attr,char * buf)121 static ssize_t armcp_ver_show(struct device *dev, struct device_attribute *attr,
122 char *buf)
123 {
124 struct hl_device *hdev = dev_get_drvdata(dev);
125
126 return sprintf(buf, "%s\n", hdev->asic_prop.armcp_info.armcp_version);
127 }
128
cpld_ver_show(struct device * dev,struct device_attribute * attr,char * buf)129 static ssize_t cpld_ver_show(struct device *dev, struct device_attribute *attr,
130 char *buf)
131 {
132 struct hl_device *hdev = dev_get_drvdata(dev);
133
134 return sprintf(buf, "0x%08x\n",
135 hdev->asic_prop.armcp_info.cpld_version);
136 }
137
infineon_ver_show(struct device * dev,struct device_attribute * attr,char * buf)138 static ssize_t infineon_ver_show(struct device *dev,
139 struct device_attribute *attr, char *buf)
140 {
141 struct hl_device *hdev = dev_get_drvdata(dev);
142
143 return sprintf(buf, "0x%04x\n",
144 hdev->asic_prop.armcp_info.infineon_version);
145 }
146
fuse_ver_show(struct device * dev,struct device_attribute * attr,char * buf)147 static ssize_t fuse_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, "%s\n", hdev->asic_prop.armcp_info.fuse_version);
153 }
154
thermal_ver_show(struct device * dev,struct device_attribute * attr,char * buf)155 static ssize_t thermal_ver_show(struct device *dev,
156 struct device_attribute *attr, char *buf)
157 {
158 struct hl_device *hdev = dev_get_drvdata(dev);
159
160 return sprintf(buf, "%s", hdev->asic_prop.armcp_info.thermal_version);
161 }
162
preboot_btl_ver_show(struct device * dev,struct device_attribute * attr,char * buf)163 static ssize_t preboot_btl_ver_show(struct device *dev,
164 struct device_attribute *attr, char *buf)
165 {
166 struct hl_device *hdev = dev_get_drvdata(dev);
167
168 return sprintf(buf, "%s\n", hdev->asic_prop.preboot_ver);
169 }
170
soft_reset_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)171 static ssize_t soft_reset_store(struct device *dev,
172 struct device_attribute *attr, const char *buf,
173 size_t count)
174 {
175 struct hl_device *hdev = dev_get_drvdata(dev);
176 long value;
177 int rc;
178
179 rc = kstrtoul(buf, 0, &value);
180
181 if (rc) {
182 count = -EINVAL;
183 goto out;
184 }
185
186 hl_device_reset(hdev, false, false);
187
188 out:
189 return count;
190 }
191
hard_reset_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)192 static ssize_t hard_reset_store(struct device *dev,
193 struct device_attribute *attr,
194 const char *buf, size_t count)
195 {
196 struct hl_device *hdev = dev_get_drvdata(dev);
197 long value;
198 int rc;
199
200 rc = kstrtoul(buf, 0, &value);
201
202 if (rc) {
203 count = -EINVAL;
204 goto out;
205 }
206
207 hl_device_reset(hdev, true, false);
208
209 out:
210 return count;
211 }
212
device_type_show(struct device * dev,struct device_attribute * attr,char * buf)213 static ssize_t device_type_show(struct device *dev,
214 struct device_attribute *attr, char *buf)
215 {
216 struct hl_device *hdev = dev_get_drvdata(dev);
217 char *str;
218
219 switch (hdev->asic_type) {
220 case ASIC_GOYA:
221 str = "GOYA";
222 break;
223 default:
224 dev_err(hdev->dev, "Unrecognized ASIC type %d\n",
225 hdev->asic_type);
226 return -EINVAL;
227 }
228
229 return sprintf(buf, "%s\n", str);
230 }
231
pci_addr_show(struct device * dev,struct device_attribute * attr,char * buf)232 static ssize_t pci_addr_show(struct device *dev, struct device_attribute *attr,
233 char *buf)
234 {
235 struct hl_device *hdev = dev_get_drvdata(dev);
236
237 return sprintf(buf, "%04x:%02x:%02x.%x\n",
238 pci_domain_nr(hdev->pdev->bus),
239 hdev->pdev->bus->number,
240 PCI_SLOT(hdev->pdev->devfn),
241 PCI_FUNC(hdev->pdev->devfn));
242 }
243
status_show(struct device * dev,struct device_attribute * attr,char * buf)244 static ssize_t status_show(struct device *dev, struct device_attribute *attr,
245 char *buf)
246 {
247 struct hl_device *hdev = dev_get_drvdata(dev);
248 char *str;
249
250 if (atomic_read(&hdev->in_reset))
251 str = "In reset";
252 else if (hdev->disabled)
253 str = "Malfunction";
254 else
255 str = "Operational";
256
257 return sprintf(buf, "%s\n", str);
258 }
259
soft_reset_cnt_show(struct device * dev,struct device_attribute * attr,char * buf)260 static ssize_t soft_reset_cnt_show(struct device *dev,
261 struct device_attribute *attr, char *buf)
262 {
263 struct hl_device *hdev = dev_get_drvdata(dev);
264
265 return sprintf(buf, "%d\n", hdev->soft_reset_cnt);
266 }
267
hard_reset_cnt_show(struct device * dev,struct device_attribute * attr,char * buf)268 static ssize_t hard_reset_cnt_show(struct device *dev,
269 struct device_attribute *attr, char *buf)
270 {
271 struct hl_device *hdev = dev_get_drvdata(dev);
272
273 return sprintf(buf, "%d\n", hdev->hard_reset_cnt);
274 }
275
max_power_show(struct device * dev,struct device_attribute * attr,char * buf)276 static ssize_t max_power_show(struct device *dev, struct device_attribute *attr,
277 char *buf)
278 {
279 struct hl_device *hdev = dev_get_drvdata(dev);
280 long val;
281
282 if (hl_device_disabled_or_in_reset(hdev))
283 return -ENODEV;
284
285 val = hl_get_max_power(hdev);
286
287 return sprintf(buf, "%lu\n", val);
288 }
289
max_power_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)290 static ssize_t max_power_store(struct device *dev,
291 struct device_attribute *attr, const char *buf, size_t count)
292 {
293 struct hl_device *hdev = dev_get_drvdata(dev);
294 unsigned long value;
295 int rc;
296
297 if (hl_device_disabled_or_in_reset(hdev)) {
298 count = -ENODEV;
299 goto out;
300 }
301
302 rc = kstrtoul(buf, 0, &value);
303
304 if (rc) {
305 count = -EINVAL;
306 goto out;
307 }
308
309 hdev->max_power = value;
310 hl_set_max_power(hdev, value);
311
312 out:
313 return count;
314 }
315
eeprom_read_handler(struct file * filp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t offset,size_t max_size)316 static ssize_t eeprom_read_handler(struct file *filp, struct kobject *kobj,
317 struct bin_attribute *attr, char *buf, loff_t offset,
318 size_t max_size)
319 {
320 struct device *dev = container_of(kobj, struct device, kobj);
321 struct hl_device *hdev = dev_get_drvdata(dev);
322 char *data;
323 int rc;
324
325 if (!max_size)
326 return -EINVAL;
327
328 data = kzalloc(max_size, GFP_KERNEL);
329 if (!data)
330 return -ENOMEM;
331
332 rc = hdev->asic_funcs->get_eeprom_data(hdev, data, max_size);
333 if (rc)
334 goto out;
335
336 memcpy(buf, data, max_size);
337
338 out:
339 kfree(data);
340
341 return max_size;
342 }
343
344 static DEVICE_ATTR_RO(armcp_kernel_ver);
345 static DEVICE_ATTR_RO(armcp_ver);
346 static DEVICE_ATTR_RO(cpld_ver);
347 static DEVICE_ATTR_RO(device_type);
348 static DEVICE_ATTR_RO(fuse_ver);
349 static DEVICE_ATTR_WO(hard_reset);
350 static DEVICE_ATTR_RO(hard_reset_cnt);
351 static DEVICE_ATTR_RO(infineon_ver);
352 static DEVICE_ATTR_RW(max_power);
353 static DEVICE_ATTR_RO(pci_addr);
354 static DEVICE_ATTR_RO(preboot_btl_ver);
355 static DEVICE_ATTR_WO(soft_reset);
356 static DEVICE_ATTR_RO(soft_reset_cnt);
357 static DEVICE_ATTR_RO(status);
358 static DEVICE_ATTR_RO(thermal_ver);
359 static DEVICE_ATTR_RO(uboot_ver);
360
361 static struct bin_attribute bin_attr_eeprom = {
362 .attr = {.name = "eeprom", .mode = (0444)},
363 .size = PAGE_SIZE,
364 .read = eeprom_read_handler
365 };
366
367 static struct attribute *hl_dev_attrs[] = {
368 &dev_attr_armcp_kernel_ver.attr,
369 &dev_attr_armcp_ver.attr,
370 &dev_attr_cpld_ver.attr,
371 &dev_attr_device_type.attr,
372 &dev_attr_fuse_ver.attr,
373 &dev_attr_hard_reset.attr,
374 &dev_attr_hard_reset_cnt.attr,
375 &dev_attr_infineon_ver.attr,
376 &dev_attr_max_power.attr,
377 &dev_attr_pci_addr.attr,
378 &dev_attr_preboot_btl_ver.attr,
379 &dev_attr_soft_reset.attr,
380 &dev_attr_soft_reset_cnt.attr,
381 &dev_attr_status.attr,
382 &dev_attr_thermal_ver.attr,
383 &dev_attr_uboot_ver.attr,
384 NULL,
385 };
386
387 static struct bin_attribute *hl_dev_bin_attrs[] = {
388 &bin_attr_eeprom,
389 NULL
390 };
391
392 static struct attribute_group hl_dev_attr_group = {
393 .attrs = hl_dev_attrs,
394 .bin_attrs = hl_dev_bin_attrs,
395 };
396
397 static struct attribute_group hl_dev_clks_attr_group;
398
399 static const struct attribute_group *hl_dev_attr_groups[] = {
400 &hl_dev_attr_group,
401 &hl_dev_clks_attr_group,
402 NULL,
403 };
404
hl_sysfs_init(struct hl_device * hdev)405 int hl_sysfs_init(struct hl_device *hdev)
406 {
407 int rc;
408
409 hdev->pm_mng_profile = PM_AUTO;
410 hdev->max_power = hdev->asic_prop.max_power_default;
411
412 hdev->asic_funcs->add_device_attr(hdev, &hl_dev_clks_attr_group);
413
414 rc = device_add_groups(hdev->dev, hl_dev_attr_groups);
415 if (rc) {
416 dev_err(hdev->dev,
417 "Failed to add groups to device, error %d\n", rc);
418 return rc;
419 }
420
421 return 0;
422 }
423
hl_sysfs_fini(struct hl_device * hdev)424 void hl_sysfs_fini(struct hl_device *hdev)
425 {
426 device_remove_groups(hdev->dev, hl_dev_attr_groups);
427 }
428