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 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 } 116 117 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 */ 278 279 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 */ 300 301 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 */ 322 323 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 */ 344 345 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 */ 364 365 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 }; 385 386 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 } 393 394 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