1 /*
2 * Copyright 2019 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 */
23 #include <linux/pci.h>
24
25 #include "amdgpu.h"
26 #include "amdgpu_i2c.h"
27 #include "smu_v11_0_i2c.h"
28 #include "atom.h"
29 #include "amdgpu_fru_eeprom.h"
30 #include "amdgpu_eeprom.h"
31
32 #define FRU_EEPROM_MADDR_6 0x60000
33 #define FRU_EEPROM_MADDR_8 0x80000
34 #define FRU_EEPROM_MADDR_INV 0xFFFFF
35
is_fru_eeprom_supported(struct amdgpu_device * adev,u32 * fru_addr)36 static bool is_fru_eeprom_supported(struct amdgpu_device *adev, u32 *fru_addr)
37 {
38 /* Only server cards have the FRU EEPROM
39 * TODO: See if we can figure this out dynamically instead of
40 * having to parse VBIOS versions.
41 */
42 struct atom_context *atom_ctx = adev->mode_info.atom_context;
43
44 /* The i2c access is blocked on VF
45 * TODO: Need other way to get the info
46 * Also, FRU not valid for APU devices.
47 */
48 if (amdgpu_sriov_vf(adev) || (adev->flags & AMD_IS_APU))
49 return false;
50
51 /* The default I2C EEPROM address of the FRU.
52 */
53 if (fru_addr)
54 *fru_addr = FRU_EEPROM_MADDR_8;
55
56 /* VBIOS is of the format ###-DXXXYYYY-##. For SKU identification,
57 * we can use just the "DXXX" portion. If there were more models, we
58 * could convert the 3 characters to a hex integer and use a switch
59 * for ease/speed/readability. For now, 2 string comparisons are
60 * reasonable and not too expensive
61 */
62 switch (amdgpu_ip_version(adev, MP1_HWIP, 0)) {
63 case IP_VERSION(11, 0, 2):
64 switch (adev->asic_type) {
65 case CHIP_VEGA20:
66 /* D161 and D163 are the VG20 server SKUs */
67 if (atom_ctx && (strnstr(atom_ctx->vbios_pn, "D161",
68 sizeof(atom_ctx->vbios_pn)) ||
69 strnstr(atom_ctx->vbios_pn, "D163",
70 sizeof(atom_ctx->vbios_pn)))) {
71 if (fru_addr)
72 *fru_addr = FRU_EEPROM_MADDR_6;
73 return true;
74 } else {
75 return false;
76 }
77 case CHIP_ARCTURUS:
78 default:
79 return false;
80 }
81 case IP_VERSION(11, 0, 7):
82 if (atom_ctx && strnstr(atom_ctx->vbios_pn, "D603",
83 sizeof(atom_ctx->vbios_pn))) {
84 if (strnstr(atom_ctx->vbios_pn, "D603GLXE",
85 sizeof(atom_ctx->vbios_pn))) {
86 return false;
87 }
88
89 if (fru_addr)
90 *fru_addr = FRU_EEPROM_MADDR_6;
91 return true;
92
93 } else {
94 return false;
95 }
96 case IP_VERSION(13, 0, 2):
97 /* All Aldebaran SKUs have an FRU */
98 if (atom_ctx && !strnstr(atom_ctx->vbios_pn, "D673",
99 sizeof(atom_ctx->vbios_pn)))
100 if (fru_addr)
101 *fru_addr = FRU_EEPROM_MADDR_6;
102 return true;
103 case IP_VERSION(13, 0, 6):
104 case IP_VERSION(13, 0, 14):
105 if (fru_addr)
106 *fru_addr = FRU_EEPROM_MADDR_8;
107 return true;
108 case IP_VERSION(13, 0, 12):
109 if (fru_addr)
110 *fru_addr = FRU_EEPROM_MADDR_INV;
111 return true;
112 default:
113 return false;
114 }
115 }
116
amdgpu_fru_get_product_info(struct amdgpu_device * adev)117 int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
118 {
119 struct amdgpu_fru_info *fru_info;
120 unsigned char buf[8], *pia;
121 u32 addr, fru_addr;
122 int size, len;
123 u8 csum;
124
125 if (!is_fru_eeprom_supported(adev, &fru_addr))
126 return 0;
127
128 /* FRU data avaialble, but no direct EEPROM access */
129 if (fru_addr == FRU_EEPROM_MADDR_INV)
130 return 0;
131
132 if (!adev->fru_info) {
133 adev->fru_info = kzalloc(sizeof(*adev->fru_info), GFP_KERNEL);
134 if (!adev->fru_info)
135 return -ENOMEM;
136 }
137
138 fru_info = adev->fru_info;
139 /* For Arcturus-and-later, default value of serial_number is unique_id
140 * so convert it to a 16-digit HEX string for convenience and
141 * backwards-compatibility.
142 */
143 sprintf(fru_info->serial, "%llx", adev->unique_id);
144
145 /* If algo exists, it means that the i2c_adapter's initialized */
146 if (!adev->pm.fru_eeprom_i2c_bus || !adev->pm.fru_eeprom_i2c_bus->algo) {
147 DRM_WARN("Cannot access FRU, EEPROM accessor not initialized");
148 return -ENODEV;
149 }
150
151 /* Read the IPMI Common header */
152 len = amdgpu_eeprom_read(adev->pm.fru_eeprom_i2c_bus, fru_addr, buf,
153 sizeof(buf));
154 if (len != 8) {
155 DRM_ERROR("Couldn't read the IPMI Common Header: %d", len);
156 return len < 0 ? len : -EIO;
157 }
158
159 if (buf[0] != 1) {
160 DRM_ERROR("Bad IPMI Common Header version: 0x%02x", buf[0]);
161 return -EIO;
162 }
163
164 for (csum = 0; len > 0; len--)
165 csum += buf[len - 1];
166 if (csum) {
167 DRM_ERROR("Bad IPMI Common Header checksum: 0x%02x", csum);
168 return -EIO;
169 }
170
171 /* Get the offset to the Product Info Area (PIA). */
172 addr = buf[4] * 8;
173 if (!addr)
174 return 0;
175
176 /* Get the absolute address to the PIA. */
177 addr += fru_addr;
178
179 /* Read the header of the PIA. */
180 len = amdgpu_eeprom_read(adev->pm.fru_eeprom_i2c_bus, addr, buf, 3);
181 if (len != 3) {
182 DRM_ERROR("Couldn't read the Product Info Area header: %d", len);
183 return len < 0 ? len : -EIO;
184 }
185
186 if (buf[0] != 1) {
187 DRM_ERROR("Bad IPMI Product Info Area version: 0x%02x", buf[0]);
188 return -EIO;
189 }
190
191 size = buf[1] * 8;
192 pia = kzalloc(size, GFP_KERNEL);
193 if (!pia)
194 return -ENOMEM;
195
196 /* Read the whole PIA. */
197 len = amdgpu_eeprom_read(adev->pm.fru_eeprom_i2c_bus, addr, pia, size);
198 if (len != size) {
199 kfree(pia);
200 DRM_ERROR("Couldn't read the Product Info Area: %d", len);
201 return len < 0 ? len : -EIO;
202 }
203
204 for (csum = 0; size > 0; size--)
205 csum += pia[size - 1];
206 if (csum) {
207 DRM_ERROR("Bad Product Info Area checksum: 0x%02x", csum);
208 kfree(pia);
209 return -EIO;
210 }
211
212 /* Now extract useful information from the PIA.
213 *
214 * Read Manufacturer Name field whose length is [3].
215 */
216 addr = 3;
217 if (addr + 1 >= len)
218 goto Out;
219 memcpy(fru_info->manufacturer_name, pia + addr + 1,
220 min_t(size_t, sizeof(fru_info->manufacturer_name),
221 pia[addr] & 0x3F));
222 fru_info->manufacturer_name[sizeof(fru_info->manufacturer_name) - 1] =
223 '\0';
224
225 /* Read Product Name field. */
226 addr += 1 + (pia[addr] & 0x3F);
227 if (addr + 1 >= len)
228 goto Out;
229 memcpy(fru_info->product_name, pia + addr + 1,
230 min_t(size_t, sizeof(fru_info->product_name), pia[addr] & 0x3F));
231 fru_info->product_name[sizeof(fru_info->product_name) - 1] = '\0';
232
233 /* Go to the Product Part/Model Number field. */
234 addr += 1 + (pia[addr] & 0x3F);
235 if (addr + 1 >= len)
236 goto Out;
237 memcpy(fru_info->product_number, pia + addr + 1,
238 min_t(size_t, sizeof(fru_info->product_number),
239 pia[addr] & 0x3F));
240 fru_info->product_number[sizeof(fru_info->product_number) - 1] = '\0';
241
242 /* Go to the Product Version field. */
243 addr += 1 + (pia[addr] & 0x3F);
244
245 /* Go to the Product Serial Number field. */
246 addr += 1 + (pia[addr] & 0x3F);
247 if (addr + 1 >= len)
248 goto Out;
249 memcpy(fru_info->serial, pia + addr + 1,
250 min_t(size_t, sizeof(fru_info->serial), pia[addr] & 0x3F));
251 fru_info->serial[sizeof(fru_info->serial) - 1] = '\0';
252
253 /* Asset Tag field */
254 addr += 1 + (pia[addr] & 0x3F);
255
256 /* FRU File Id field. This could be 'null'. */
257 addr += 1 + (pia[addr] & 0x3F);
258 if ((addr + 1 >= len) || !(pia[addr] & 0x3F))
259 goto Out;
260 memcpy(fru_info->fru_id, pia + addr + 1,
261 min_t(size_t, sizeof(fru_info->fru_id), pia[addr] & 0x3F));
262 fru_info->fru_id[sizeof(fru_info->fru_id) - 1] = '\0';
263
264 Out:
265 kfree(pia);
266 return 0;
267 }
268
269 /**
270 * DOC: product_name
271 *
272 * The amdgpu driver provides a sysfs API for reporting the product name
273 * for the device
274 * The file product_name is used for this and returns the product name
275 * as returned from the FRU.
276 * NOTE: This is only available for certain server cards
277 */
278
amdgpu_fru_product_name_show(struct device * dev,struct device_attribute * attr,char * buf)279 static ssize_t amdgpu_fru_product_name_show(struct device *dev,
280 struct device_attribute *attr,
281 char *buf)
282 {
283 struct drm_device *ddev = dev_get_drvdata(dev);
284 struct amdgpu_device *adev = drm_to_adev(ddev);
285
286 return sysfs_emit(buf, "%s\n", adev->fru_info->product_name);
287 }
288
289 static DEVICE_ATTR(product_name, 0444, amdgpu_fru_product_name_show, NULL);
290
291 /**
292 * DOC: product_number
293 *
294 * The amdgpu driver provides a sysfs API for reporting the part number
295 * for the device
296 * The file product_number is used for this and returns the part number
297 * as returned from the FRU.
298 * NOTE: This is only available for certain server cards
299 */
300
amdgpu_fru_product_number_show(struct device * dev,struct device_attribute * attr,char * buf)301 static ssize_t amdgpu_fru_product_number_show(struct device *dev,
302 struct device_attribute *attr,
303 char *buf)
304 {
305 struct drm_device *ddev = dev_get_drvdata(dev);
306 struct amdgpu_device *adev = drm_to_adev(ddev);
307
308 return sysfs_emit(buf, "%s\n", adev->fru_info->product_number);
309 }
310
311 static DEVICE_ATTR(product_number, 0444, amdgpu_fru_product_number_show, NULL);
312
313 /**
314 * DOC: serial_number
315 *
316 * The amdgpu driver provides a sysfs API for reporting the serial number
317 * for the device
318 * The file serial_number is used for this and returns the serial number
319 * as returned from the FRU.
320 * NOTE: This is only available for certain server cards
321 */
322
amdgpu_fru_serial_number_show(struct device * dev,struct device_attribute * attr,char * buf)323 static ssize_t amdgpu_fru_serial_number_show(struct device *dev,
324 struct device_attribute *attr,
325 char *buf)
326 {
327 struct drm_device *ddev = dev_get_drvdata(dev);
328 struct amdgpu_device *adev = drm_to_adev(ddev);
329
330 return sysfs_emit(buf, "%s\n", adev->fru_info->serial);
331 }
332
333 static DEVICE_ATTR(serial_number, 0444, amdgpu_fru_serial_number_show, NULL);
334
335 /**
336 * DOC: fru_id
337 *
338 * The amdgpu driver provides a sysfs API for reporting FRU File Id
339 * for the device.
340 * The file fru_id is used for this and returns the File Id value
341 * as returned from the FRU.
342 * NOTE: This is only available for certain server cards
343 */
344
amdgpu_fru_id_show(struct device * dev,struct device_attribute * attr,char * buf)345 static ssize_t amdgpu_fru_id_show(struct device *dev,
346 struct device_attribute *attr, char *buf)
347 {
348 struct drm_device *ddev = dev_get_drvdata(dev);
349 struct amdgpu_device *adev = drm_to_adev(ddev);
350
351 return sysfs_emit(buf, "%s\n", adev->fru_info->fru_id);
352 }
353
354 static DEVICE_ATTR(fru_id, 0444, amdgpu_fru_id_show, NULL);
355
356 /**
357 * DOC: manufacturer
358 *
359 * The amdgpu driver provides a sysfs API for reporting manufacturer name from
360 * FRU information.
361 * The file manufacturer returns the value as returned from the FRU.
362 * NOTE: This is only available for certain server cards
363 */
364
amdgpu_fru_manufacturer_name_show(struct device * dev,struct device_attribute * attr,char * buf)365 static ssize_t amdgpu_fru_manufacturer_name_show(struct device *dev,
366 struct device_attribute *attr,
367 char *buf)
368 {
369 struct drm_device *ddev = dev_get_drvdata(dev);
370 struct amdgpu_device *adev = drm_to_adev(ddev);
371
372 return sysfs_emit(buf, "%s\n", adev->fru_info->manufacturer_name);
373 }
374
375 static DEVICE_ATTR(manufacturer, 0444, amdgpu_fru_manufacturer_name_show, NULL);
376
377 static const struct attribute *amdgpu_fru_attributes[] = {
378 &dev_attr_product_name.attr,
379 &dev_attr_product_number.attr,
380 &dev_attr_serial_number.attr,
381 &dev_attr_fru_id.attr,
382 &dev_attr_manufacturer.attr,
383 NULL
384 };
385
amdgpu_fru_sysfs_init(struct amdgpu_device * adev)386 int amdgpu_fru_sysfs_init(struct amdgpu_device *adev)
387 {
388 if (!is_fru_eeprom_supported(adev, NULL) || !adev->fru_info)
389 return 0;
390
391 return sysfs_create_files(&adev->dev->kobj, amdgpu_fru_attributes);
392 }
393
amdgpu_fru_sysfs_fini(struct amdgpu_device * adev)394 void amdgpu_fru_sysfs_fini(struct amdgpu_device *adev)
395 {
396 if (!adev->fru_info)
397 return;
398
399 sysfs_remove_files(&adev->dev->kobj, amdgpu_fru_attributes);
400 }
401