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 35static 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, MP1_HWIP, 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 111int 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)) 120 return 0; 121 122 if (!adev->fru_info) { 123 adev->fru_info = kzalloc(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(fru_info->serial, "%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(adev->pm.fru_eeprom_i2c_bus, fru_addr, buf, 143 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(adev->pm.fru_eeprom_i2c_bus, addr, buf, 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(adev->pm.fru_eeprom_i2c_bus, addr, pia, size); 188 if (len != size) { 189 kfree(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(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 254Out: 255 kfree(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 269static 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, "%s\n", adev->fru_info->product_name); 277} 278 279static 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 291static 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, "%s\n", adev->fru_info->product_number); 299} 300 301static 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 313static 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, "%s\n", adev->fru_info->serial); 321} 322 323static 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 335static 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, "%s\n", adev->fru_info->fru_id); 342} 343 344static 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 355static 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, "%s\n", adev->fru_info->manufacturer_name); 363} 364 365static DEVICE_ATTR(manufacturer, 0444, amdgpu_fru_manufacturer_name_show, NULL); 366 367static 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 376int 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(&adev->dev->kobj, amdgpu_fru_attributes); 382} 383 384void 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(&adev->dev->kobj, amdgpu_fru_attributes); 390} 391