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 | |
35 | static bool is_fru_eeprom_supported(struct amdgpu_device *adev, u32 *fru_addr) |
36 | { |
37 | /* Only server cards have the FRU EEPROM |
38 | * TODO: See if we can figure this out dynamically instead of |
39 | * having to parse VBIOS versions. |
40 | */ |
41 | struct atom_context *atom_ctx = adev->mode_info.atom_context; |
42 | |
43 | /* The i2c access is blocked on VF |
44 | * TODO: Need other way to get the info |
45 | * Also, FRU not valid for APU devices. |
46 | */ |
47 | if (amdgpu_sriov_vf(adev) || (adev->flags & AMD_IS_APU)) |
48 | return false; |
49 | |
50 | /* The default I2C EEPROM address of the FRU. |
51 | */ |
52 | if (fru_addr) |
53 | *fru_addr = FRU_EEPROM_MADDR_8; |
54 | |
55 | /* VBIOS is of the format ###-DXXXYYYY-##. For SKU identification, |
56 | * we can use just the "DXXX" portion. If there were more models, we |
57 | * could convert the 3 characters to a hex integer and use a switch |
58 | * for ease/speed/readability. For now, 2 string comparisons are |
59 | * reasonable and not too expensive |
60 | */ |
61 | switch (amdgpu_ip_version(adev, ip: MP1_HWIP, inst: 0)) { |
62 | case IP_VERSION(11, 0, 2): |
63 | switch (adev->asic_type) { |
64 | case CHIP_VEGA20: |
65 | /* D161 and D163 are the VG20 server SKUs */ |
66 | if (strnstr(atom_ctx->vbios_pn, "D161" , |
67 | sizeof(atom_ctx->vbios_pn)) || |
68 | strnstr(atom_ctx->vbios_pn, "D163" , |
69 | sizeof(atom_ctx->vbios_pn))) { |
70 | if (fru_addr) |
71 | *fru_addr = FRU_EEPROM_MADDR_6; |
72 | return true; |
73 | } else { |
74 | return false; |
75 | } |
76 | case CHIP_ARCTURUS: |
77 | default: |
78 | return false; |
79 | } |
80 | case IP_VERSION(11, 0, 7): |
81 | if (strnstr(atom_ctx->vbios_pn, "D603" , |
82 | sizeof(atom_ctx->vbios_pn))) { |
83 | if (strnstr(atom_ctx->vbios_pn, "D603GLXE" , |
84 | sizeof(atom_ctx->vbios_pn))) { |
85 | return false; |
86 | } |
87 | |
88 | if (fru_addr) |
89 | *fru_addr = FRU_EEPROM_MADDR_6; |
90 | return true; |
91 | |
92 | } else { |
93 | return false; |
94 | } |
95 | case IP_VERSION(13, 0, 2): |
96 | /* All Aldebaran SKUs have an FRU */ |
97 | if (!strnstr(atom_ctx->vbios_pn, "D673" , |
98 | sizeof(atom_ctx->vbios_pn))) |
99 | if (fru_addr) |
100 | *fru_addr = FRU_EEPROM_MADDR_6; |
101 | return true; |
102 | case IP_VERSION(13, 0, 6): |
103 | if (fru_addr) |
104 | *fru_addr = FRU_EEPROM_MADDR_8; |
105 | return true; |
106 | default: |
107 | return false; |
108 | } |
109 | } |
110 | |
111 | int amdgpu_fru_get_product_info(struct amdgpu_device *adev) |
112 | { |
113 | struct amdgpu_fru_info *fru_info; |
114 | unsigned char buf[8], *pia; |
115 | u32 addr, fru_addr; |
116 | int size, len; |
117 | u8 csum; |
118 | |
119 | if (!is_fru_eeprom_supported(adev, fru_addr: &fru_addr)) |
120 | return 0; |
121 | |
122 | if (!adev->fru_info) { |
123 | adev->fru_info = kzalloc(size: sizeof(*adev->fru_info), GFP_KERNEL); |
124 | if (!adev->fru_info) |
125 | return -ENOMEM; |
126 | } |
127 | |
128 | fru_info = adev->fru_info; |
129 | /* For Arcturus-and-later, default value of serial_number is unique_id |
130 | * so convert it to a 16-digit HEX string for convenience and |
131 | * backwards-compatibility. |
132 | */ |
133 | sprintf(buf: fru_info->serial, fmt: "%llx" , adev->unique_id); |
134 | |
135 | /* If algo exists, it means that the i2c_adapter's initialized */ |
136 | if (!adev->pm.fru_eeprom_i2c_bus || !adev->pm.fru_eeprom_i2c_bus->algo) { |
137 | DRM_WARN("Cannot access FRU, EEPROM accessor not initialized" ); |
138 | return -ENODEV; |
139 | } |
140 | |
141 | /* Read the IPMI Common header */ |
142 | len = amdgpu_eeprom_read(i2c_adap: adev->pm.fru_eeprom_i2c_bus, eeprom_addr: fru_addr, eeprom_buf: buf, |
143 | bytes: sizeof(buf)); |
144 | if (len != 8) { |
145 | DRM_ERROR("Couldn't read the IPMI Common Header: %d" , len); |
146 | return len < 0 ? len : -EIO; |
147 | } |
148 | |
149 | if (buf[0] != 1) { |
150 | DRM_ERROR("Bad IPMI Common Header version: 0x%02x" , buf[0]); |
151 | return -EIO; |
152 | } |
153 | |
154 | for (csum = 0; len > 0; len--) |
155 | csum += buf[len - 1]; |
156 | if (csum) { |
157 | DRM_ERROR("Bad IPMI Common Header checksum: 0x%02x" , csum); |
158 | return -EIO; |
159 | } |
160 | |
161 | /* Get the offset to the Product Info Area (PIA). */ |
162 | addr = buf[4] * 8; |
163 | if (!addr) |
164 | return 0; |
165 | |
166 | /* Get the absolute address to the PIA. */ |
167 | addr += fru_addr; |
168 | |
169 | /* Read the header of the PIA. */ |
170 | len = amdgpu_eeprom_read(i2c_adap: adev->pm.fru_eeprom_i2c_bus, eeprom_addr: addr, eeprom_buf: buf, bytes: 3); |
171 | if (len != 3) { |
172 | DRM_ERROR("Couldn't read the Product Info Area header: %d" , len); |
173 | return len < 0 ? len : -EIO; |
174 | } |
175 | |
176 | if (buf[0] != 1) { |
177 | DRM_ERROR("Bad IPMI Product Info Area version: 0x%02x" , buf[0]); |
178 | return -EIO; |
179 | } |
180 | |
181 | size = buf[1] * 8; |
182 | pia = kzalloc(size, GFP_KERNEL); |
183 | if (!pia) |
184 | return -ENOMEM; |
185 | |
186 | /* Read the whole PIA. */ |
187 | len = amdgpu_eeprom_read(i2c_adap: adev->pm.fru_eeprom_i2c_bus, eeprom_addr: addr, eeprom_buf: pia, bytes: size); |
188 | if (len != size) { |
189 | kfree(objp: pia); |
190 | DRM_ERROR("Couldn't read the Product Info Area: %d" , len); |
191 | return len < 0 ? len : -EIO; |
192 | } |
193 | |
194 | for (csum = 0; size > 0; size--) |
195 | csum += pia[size - 1]; |
196 | if (csum) { |
197 | DRM_ERROR("Bad Product Info Area checksum: 0x%02x" , csum); |
198 | kfree(objp: pia); |
199 | return -EIO; |
200 | } |
201 | |
202 | /* Now extract useful information from the PIA. |
203 | * |
204 | * Read Manufacturer Name field whose length is [3]. |
205 | */ |
206 | addr = 3; |
207 | if (addr + 1 >= len) |
208 | goto Out; |
209 | memcpy(fru_info->manufacturer_name, pia + addr + 1, |
210 | min_t(size_t, sizeof(fru_info->manufacturer_name), |
211 | pia[addr] & 0x3F)); |
212 | fru_info->manufacturer_name[sizeof(fru_info->manufacturer_name) - 1] = |
213 | '\0'; |
214 | |
215 | /* Read Product Name field. */ |
216 | addr += 1 + (pia[addr] & 0x3F); |
217 | if (addr + 1 >= len) |
218 | goto Out; |
219 | memcpy(fru_info->product_name, pia + addr + 1, |
220 | min_t(size_t, sizeof(fru_info->product_name), pia[addr] & 0x3F)); |
221 | fru_info->product_name[sizeof(fru_info->product_name) - 1] = '\0'; |
222 | |
223 | /* Go to the Product Part/Model Number field. */ |
224 | addr += 1 + (pia[addr] & 0x3F); |
225 | if (addr + 1 >= len) |
226 | goto Out; |
227 | memcpy(fru_info->product_number, pia + addr + 1, |
228 | min_t(size_t, sizeof(fru_info->product_number), |
229 | pia[addr] & 0x3F)); |
230 | fru_info->product_number[sizeof(fru_info->product_number) - 1] = '\0'; |
231 | |
232 | /* Go to the Product Version field. */ |
233 | addr += 1 + (pia[addr] & 0x3F); |
234 | |
235 | /* Go to the Product Serial Number field. */ |
236 | addr += 1 + (pia[addr] & 0x3F); |
237 | if (addr + 1 >= len) |
238 | goto Out; |
239 | memcpy(fru_info->serial, pia + addr + 1, |
240 | min_t(size_t, sizeof(fru_info->serial), pia[addr] & 0x3F)); |
241 | fru_info->serial[sizeof(fru_info->serial) - 1] = '\0'; |
242 | |
243 | /* Asset Tag field */ |
244 | addr += 1 + (pia[addr] & 0x3F); |
245 | |
246 | /* FRU File Id field. This could be 'null'. */ |
247 | addr += 1 + (pia[addr] & 0x3F); |
248 | if ((addr + 1 >= len) || !(pia[addr] & 0x3F)) |
249 | goto Out; |
250 | memcpy(fru_info->fru_id, pia + addr + 1, |
251 | min_t(size_t, sizeof(fru_info->fru_id), pia[addr] & 0x3F)); |
252 | fru_info->fru_id[sizeof(fru_info->fru_id) - 1] = '\0'; |
253 | |
254 | Out: |
255 | kfree(objp: pia); |
256 | return 0; |
257 | } |
258 | |
259 | /** |
260 | * DOC: product_name |
261 | * |
262 | * The amdgpu driver provides a sysfs API for reporting the product name |
263 | * for the device |
264 | * The file product_name is used for this and returns the product name |
265 | * as returned from the FRU. |
266 | * NOTE: This is only available for certain server cards |
267 | */ |
268 | |
269 | static ssize_t amdgpu_fru_product_name_show(struct device *dev, |
270 | struct device_attribute *attr, |
271 | char *buf) |
272 | { |
273 | struct drm_device *ddev = dev_get_drvdata(dev); |
274 | struct amdgpu_device *adev = drm_to_adev(ddev); |
275 | |
276 | return sysfs_emit(buf, fmt: "%s\n" , adev->fru_info->product_name); |
277 | } |
278 | |
279 | static DEVICE_ATTR(product_name, 0444, amdgpu_fru_product_name_show, NULL); |
280 | |
281 | /** |
282 | * DOC: product_number |
283 | * |
284 | * The amdgpu driver provides a sysfs API for reporting the part number |
285 | * for the device |
286 | * The file product_number is used for this and returns the part number |
287 | * as returned from the FRU. |
288 | * NOTE: This is only available for certain server cards |
289 | */ |
290 | |
291 | static ssize_t amdgpu_fru_product_number_show(struct device *dev, |
292 | struct device_attribute *attr, |
293 | char *buf) |
294 | { |
295 | struct drm_device *ddev = dev_get_drvdata(dev); |
296 | struct amdgpu_device *adev = drm_to_adev(ddev); |
297 | |
298 | return sysfs_emit(buf, fmt: "%s\n" , adev->fru_info->product_number); |
299 | } |
300 | |
301 | static DEVICE_ATTR(product_number, 0444, amdgpu_fru_product_number_show, NULL); |
302 | |
303 | /** |
304 | * DOC: serial_number |
305 | * |
306 | * The amdgpu driver provides a sysfs API for reporting the serial number |
307 | * for the device |
308 | * The file serial_number is used for this and returns the serial number |
309 | * as returned from the FRU. |
310 | * NOTE: This is only available for certain server cards |
311 | */ |
312 | |
313 | static ssize_t amdgpu_fru_serial_number_show(struct device *dev, |
314 | struct device_attribute *attr, |
315 | char *buf) |
316 | { |
317 | struct drm_device *ddev = dev_get_drvdata(dev); |
318 | struct amdgpu_device *adev = drm_to_adev(ddev); |
319 | |
320 | return sysfs_emit(buf, fmt: "%s\n" , adev->fru_info->serial); |
321 | } |
322 | |
323 | static DEVICE_ATTR(serial_number, 0444, amdgpu_fru_serial_number_show, NULL); |
324 | |
325 | /** |
326 | * DOC: fru_id |
327 | * |
328 | * The amdgpu driver provides a sysfs API for reporting FRU File Id |
329 | * for the device. |
330 | * The file fru_id is used for this and returns the File Id value |
331 | * as returned from the FRU. |
332 | * NOTE: This is only available for certain server cards |
333 | */ |
334 | |
335 | static ssize_t amdgpu_fru_id_show(struct device *dev, |
336 | struct device_attribute *attr, char *buf) |
337 | { |
338 | struct drm_device *ddev = dev_get_drvdata(dev); |
339 | struct amdgpu_device *adev = drm_to_adev(ddev); |
340 | |
341 | return sysfs_emit(buf, fmt: "%s\n" , adev->fru_info->fru_id); |
342 | } |
343 | |
344 | static DEVICE_ATTR(fru_id, 0444, amdgpu_fru_id_show, NULL); |
345 | |
346 | /** |
347 | * DOC: manufacturer |
348 | * |
349 | * The amdgpu driver provides a sysfs API for reporting manufacturer name from |
350 | * FRU information. |
351 | * The file manufacturer returns the value as returned from the FRU. |
352 | * NOTE: This is only available for certain server cards |
353 | */ |
354 | |
355 | static ssize_t amdgpu_fru_manufacturer_name_show(struct device *dev, |
356 | struct device_attribute *attr, |
357 | char *buf) |
358 | { |
359 | struct drm_device *ddev = dev_get_drvdata(dev); |
360 | struct amdgpu_device *adev = drm_to_adev(ddev); |
361 | |
362 | return sysfs_emit(buf, fmt: "%s\n" , adev->fru_info->manufacturer_name); |
363 | } |
364 | |
365 | static DEVICE_ATTR(manufacturer, 0444, amdgpu_fru_manufacturer_name_show, NULL); |
366 | |
367 | static const struct attribute *amdgpu_fru_attributes[] = { |
368 | &dev_attr_product_name.attr, |
369 | &dev_attr_product_number.attr, |
370 | &dev_attr_serial_number.attr, |
371 | &dev_attr_fru_id.attr, |
372 | &dev_attr_manufacturer.attr, |
373 | NULL |
374 | }; |
375 | |
376 | int amdgpu_fru_sysfs_init(struct amdgpu_device *adev) |
377 | { |
378 | if (!is_fru_eeprom_supported(adev, NULL) || !adev->fru_info) |
379 | return 0; |
380 | |
381 | return sysfs_create_files(kobj: &adev->dev->kobj, attr: amdgpu_fru_attributes); |
382 | } |
383 | |
384 | void amdgpu_fru_sysfs_fini(struct amdgpu_device *adev) |
385 | { |
386 | if (!is_fru_eeprom_supported(adev, NULL) || !adev->fru_info) |
387 | return; |
388 | |
389 | sysfs_remove_files(kobj: &adev->dev->kobj, attr: amdgpu_fru_attributes); |
390 | } |
391 | |