diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c | 261 |
1 files changed, 247 insertions, 14 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c index c2c2a7718613..c2e8f6491ac6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c @@ -68,11 +68,24 @@ /* Table hdr is 'AMDR' */ #define RAS_TABLE_HDR_VAL 0x414d4452 -#define RAS_TABLE_VER 0x00010000 /* Bad GPU tag ‘BADG’ */ #define RAS_TABLE_HDR_BAD 0x42414447 +/** + * EEPROM Table structure v1 + * --------------------------------- + * | | + * | EEPROM TABLE HEADER | + * | ( size 20 Bytes ) | + * | | + * --------------------------------- + * | | + * | BAD PAGE RECORD AREA | + * | | + * --------------------------------- + */ + /* Assume 2-Mbit size EEPROM and take up the whole space. */ #define RAS_TBL_SIZE_BYTES (256 * 1024) #define RAS_TABLE_START 0 @@ -81,6 +94,35 @@ #define RAS_MAX_RECORD_COUNT ((RAS_TBL_SIZE_BYTES - RAS_TABLE_HEADER_SIZE) \ / RAS_TABLE_RECORD_SIZE) +/** + * EEPROM Table structrue v2.1 + * --------------------------------- + * | | + * | EEPROM TABLE HEADER | + * | ( size 20 Bytes ) | + * | | + * --------------------------------- + * | | + * | EEPROM TABLE RAS INFO | + * | (available info size 4 Bytes) | + * | ( reserved size 252 Bytes ) | + * | | + * --------------------------------- + * | | + * | BAD PAGE RECORD AREA | + * | | + * --------------------------------- + */ + +/* EEPROM Table V2_1 */ +#define RAS_TABLE_V2_1_INFO_SIZE 256 +#define RAS_TABLE_V2_1_INFO_START RAS_TABLE_HEADER_SIZE +#define RAS_RECORD_START_V2_1 (RAS_HDR_START + RAS_TABLE_HEADER_SIZE + \ + RAS_TABLE_V2_1_INFO_SIZE) +#define RAS_MAX_RECORD_COUNT_V2_1 ((RAS_TBL_SIZE_BYTES - RAS_TABLE_HEADER_SIZE - \ + RAS_TABLE_V2_1_INFO_SIZE) \ + / RAS_TABLE_RECORD_SIZE) + /* Given a zero-based index of an EEPROM RAS record, yields the EEPROM * offset off of RAS_TABLE_START. That is, this is something you can * add to control->i2c_address, and then tell I2C layer to read @@ -103,6 +145,10 @@ #define RAS_NUM_RECS(_tbl_hdr) (((_tbl_hdr)->tbl_size - \ RAS_TABLE_HEADER_SIZE) / RAS_TABLE_RECORD_SIZE) +#define RAS_NUM_RECS_V2_1(_tbl_hdr) (((_tbl_hdr)->tbl_size - \ + RAS_TABLE_HEADER_SIZE - \ + RAS_TABLE_V2_1_INFO_SIZE) / RAS_TABLE_RECORD_SIZE) + #define to_amdgpu_device(x) (container_of(x, struct amdgpu_ras, eeprom_control))->adev static bool __is_ras_eeprom_supported(struct amdgpu_device *adev) @@ -230,6 +276,69 @@ static int __write_table_header(struct amdgpu_ras_eeprom_control *control) return res; } +static void +__encode_table_ras_info_to_buf(struct amdgpu_ras_eeprom_table_ras_info *rai, + unsigned char *buf) +{ + u32 *pp = (uint32_t *)buf; + u32 tmp; + + tmp = ((uint32_t)(rai->rma_status) & 0xFF) | + (((uint32_t)(rai->health_percent) << 8) & 0xFF00) | + (((uint32_t)(rai->ecc_page_threshold) << 16) & 0xFFFF0000); + pp[0] = cpu_to_le32(tmp); +} + +static void +__decode_table_ras_info_from_buf(struct amdgpu_ras_eeprom_table_ras_info *rai, + unsigned char *buf) +{ + u32 *pp = (uint32_t *)buf; + u32 tmp; + + tmp = le32_to_cpu(pp[0]); + rai->rma_status = tmp & 0xFF; + rai->health_percent = (tmp >> 8) & 0xFF; + rai->ecc_page_threshold = (tmp >> 16) & 0xFFFF; +} + +static int __write_table_ras_info(struct amdgpu_ras_eeprom_control *control) +{ + struct amdgpu_device *adev = to_amdgpu_device(control); + u8 *buf; + int res; + + buf = kzalloc(RAS_TABLE_V2_1_INFO_SIZE, GFP_KERNEL); + if (!buf) { + DRM_ERROR("Failed to alloc buf to write table ras info\n"); + return -ENOMEM; + } + + __encode_table_ras_info_to_buf(&control->tbl_rai, buf); + + /* i2c may be unstable in gpu reset */ + down_read(&adev->reset_domain->sem); + res = amdgpu_eeprom_write(adev->pm.ras_eeprom_i2c_bus, + control->i2c_address + + control->ras_info_offset, + buf, RAS_TABLE_V2_1_INFO_SIZE); + up_read(&adev->reset_domain->sem); + + if (res < 0) { + DRM_ERROR("Failed to write EEPROM table ras info:%d", res); + } else if (res < RAS_TABLE_V2_1_INFO_SIZE) { + DRM_ERROR("Short write:%d out of %d\n", + res, RAS_TABLE_V2_1_INFO_SIZE); + res = -EIO; + } else { + res = 0; + } + + kfree(buf); + + return res; +} + static u8 __calc_hdr_byte_sum(const struct amdgpu_ras_eeprom_control *control) { int ii; @@ -246,6 +355,21 @@ static u8 __calc_hdr_byte_sum(const struct amdgpu_ras_eeprom_control *control) return csum; } +static u8 __calc_ras_info_byte_sum(const struct amdgpu_ras_eeprom_control *control) +{ + int ii; + u8 *pp, csum; + size_t sz; + + sz = sizeof(control->tbl_rai); + pp = (u8 *) &control->tbl_rai; + csum = 0; + for (ii = 0; ii < sz; ii++, pp++) + csum += *pp; + + return csum; +} + static int amdgpu_ras_eeprom_correct_header_tag( struct amdgpu_ras_eeprom_control *control, uint32_t header) @@ -282,6 +406,7 @@ int amdgpu_ras_eeprom_reset_table(struct amdgpu_ras_eeprom_control *control) { struct amdgpu_device *adev = to_amdgpu_device(control); struct amdgpu_ras_eeprom_table_header *hdr = &control->tbl_hdr; + struct amdgpu_ras_eeprom_table_ras_info *rai = &control->tbl_rai; struct amdgpu_ras *con = amdgpu_ras_get_context(adev); u8 csum; int res; @@ -289,14 +414,37 @@ int amdgpu_ras_eeprom_reset_table(struct amdgpu_ras_eeprom_control *control) mutex_lock(&control->ras_tbl_mutex); hdr->header = RAS_TABLE_HDR_VAL; - hdr->version = RAS_TABLE_VER; - hdr->first_rec_offset = RAS_RECORD_START; - hdr->tbl_size = RAS_TABLE_HEADER_SIZE; + if (adev->umc.ras && + adev->umc.ras->set_eeprom_table_version) + adev->umc.ras->set_eeprom_table_version(hdr); + else + hdr->version = RAS_TABLE_VER_V1; + + if (hdr->version == RAS_TABLE_VER_V2_1) { + hdr->first_rec_offset = RAS_RECORD_START_V2_1; + hdr->tbl_size = RAS_TABLE_HEADER_SIZE + + RAS_TABLE_V2_1_INFO_SIZE; + rai->rma_status = GPU_HEALTH_USABLE; + /** + * GPU health represented as a percentage. + * 0 means worst health, 100 means fully health. + */ + rai->health_percent = 100; + /* ecc_page_threshold = 0 means disable bad page retirement */ + rai->ecc_page_threshold = con->bad_page_cnt_threshold; + } else { + hdr->first_rec_offset = RAS_RECORD_START; + hdr->tbl_size = RAS_TABLE_HEADER_SIZE; + } csum = __calc_hdr_byte_sum(control); + if (hdr->version == RAS_TABLE_VER_V2_1) + csum += __calc_ras_info_byte_sum(control); csum = -csum; hdr->checksum = csum; res = __write_table_header(control); + if (!res && hdr->version > RAS_TABLE_VER_V1) + res = __write_table_ras_info(control); control->ras_num_recs = 0; control->ras_fri = 0; @@ -573,11 +721,19 @@ amdgpu_ras_eeprom_update_header(struct amdgpu_ras_eeprom_control *control) "Saved bad pages %d reaches threshold value %d\n", control->ras_num_recs, ras->bad_page_cnt_threshold); control->tbl_hdr.header = RAS_TABLE_HDR_BAD; + if (control->tbl_hdr.version == RAS_TABLE_VER_V2_1) { + control->tbl_rai.rma_status = GPU_RETIRED__ECC_REACH_THRESHOLD; + control->tbl_rai.health_percent = 0; + } } - control->tbl_hdr.version = RAS_TABLE_VER; - control->tbl_hdr.first_rec_offset = RAS_INDEX_TO_OFFSET(control, control->ras_fri); - control->tbl_hdr.tbl_size = RAS_TABLE_HEADER_SIZE + control->ras_num_recs * RAS_TABLE_RECORD_SIZE; + if (control->tbl_hdr.version == RAS_TABLE_VER_V2_1) + control->tbl_hdr.tbl_size = RAS_TABLE_HEADER_SIZE + + RAS_TABLE_V2_1_INFO_SIZE + + control->ras_num_recs * RAS_TABLE_RECORD_SIZE; + else + control->tbl_hdr.tbl_size = RAS_TABLE_HEADER_SIZE + + control->ras_num_recs * RAS_TABLE_RECORD_SIZE; control->tbl_hdr.checksum = 0; buf_size = control->ras_num_recs * RAS_TABLE_RECORD_SIZE; @@ -606,6 +762,17 @@ amdgpu_ras_eeprom_update_header(struct amdgpu_ras_eeprom_control *control) goto Out; } + /** + * bad page records have been stored in eeprom, + * now calculate gpu health percent + */ + if (amdgpu_bad_page_threshold != 0 && + control->tbl_hdr.version == RAS_TABLE_VER_V2_1 && + control->ras_num_recs < ras->bad_page_cnt_threshold) + control->tbl_rai.health_percent = ((ras->bad_page_cnt_threshold - + control->ras_num_recs) * 100) / + ras->bad_page_cnt_threshold; + /* Recalc the checksum. */ csum = 0; @@ -613,10 +780,14 @@ amdgpu_ras_eeprom_update_header(struct amdgpu_ras_eeprom_control *control) csum += *pp; csum += __calc_hdr_byte_sum(control); + if (control->tbl_hdr.version == RAS_TABLE_VER_V2_1) + csum += __calc_ras_info_byte_sum(control); /* avoid sign extension when assigning to "checksum" */ csum = -csum; control->tbl_hdr.checksum = csum; res = __write_table_header(control); + if (!res && control->tbl_hdr.version > RAS_TABLE_VER_V1) + res = __write_table_ras_info(control); Out: kfree(buf); return res; @@ -807,9 +978,12 @@ Out: return res; } -uint32_t amdgpu_ras_eeprom_max_record_count(void) +uint32_t amdgpu_ras_eeprom_max_record_count(struct amdgpu_ras_eeprom_control *control) { - return RAS_MAX_RECORD_COUNT; + if (control->tbl_hdr.version == RAS_TABLE_VER_V2_1) + return RAS_MAX_RECORD_COUNT_V2_1; + else + return RAS_MAX_RECORD_COUNT; } static ssize_t @@ -1051,8 +1225,14 @@ static int __verify_ras_table_checksum(struct amdgpu_ras_eeprom_control *control int buf_size, res; u8 csum, *buf, *pp; - buf_size = RAS_TABLE_HEADER_SIZE + - control->ras_num_recs * RAS_TABLE_RECORD_SIZE; + if (control->tbl_hdr.version == RAS_TABLE_VER_V2_1) + buf_size = RAS_TABLE_HEADER_SIZE + + RAS_TABLE_V2_1_INFO_SIZE + + control->ras_num_recs * RAS_TABLE_RECORD_SIZE; + else + buf_size = RAS_TABLE_HEADER_SIZE + + control->ras_num_recs * RAS_TABLE_RECORD_SIZE; + buf = kzalloc(buf_size, GFP_KERNEL); if (!buf) { DRM_ERROR("Out of memory checking RAS table checksum.\n"); @@ -1080,6 +1260,39 @@ Out: return res < 0 ? res : csum; } +static int __read_table_ras_info(struct amdgpu_ras_eeprom_control *control) +{ + struct amdgpu_ras_eeprom_table_ras_info *rai = &control->tbl_rai; + struct amdgpu_device *adev = to_amdgpu_device(control); + unsigned char *buf; + int res; + + buf = kzalloc(RAS_TABLE_V2_1_INFO_SIZE, GFP_KERNEL); + if (!buf) { + DRM_ERROR("Failed to alloc buf to read EEPROM table ras info\n"); + return -ENOMEM; + } + + /** + * EEPROM table V2_1 supports ras info, + * read EEPROM table ras info + */ + res = amdgpu_eeprom_read(adev->pm.ras_eeprom_i2c_bus, + control->i2c_address + control->ras_info_offset, + buf, RAS_TABLE_V2_1_INFO_SIZE); + if (res < RAS_TABLE_V2_1_INFO_SIZE) { + DRM_ERROR("Failed to read EEPROM table ras info, res:%d", res); + res = res >= 0 ? -EIO : res; + goto Out; + } + + __decode_table_ras_info_from_buf(rai, buf); + +Out: + kfree(buf); + return res == RAS_TABLE_V2_1_INFO_SIZE ? 0 : res; +} + int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control, bool *exceed_err_limit) { @@ -1102,8 +1315,7 @@ int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control, return -EINVAL; control->ras_header_offset = RAS_HDR_START; - control->ras_record_offset = RAS_RECORD_START; - control->ras_max_record_count = RAS_MAX_RECORD_COUNT; + control->ras_info_offset = RAS_TABLE_V2_1_INFO_START; mutex_init(&control->ras_tbl_mutex); /* Read the table header from EEPROM address */ @@ -1117,12 +1329,27 @@ int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control, __decode_table_header_from_buf(hdr, buf); - control->ras_num_recs = RAS_NUM_RECS(hdr); + if (hdr->version == RAS_TABLE_VER_V2_1) { + control->ras_num_recs = RAS_NUM_RECS_V2_1(hdr); + control->ras_record_offset = RAS_RECORD_START_V2_1; + control->ras_max_record_count = RAS_MAX_RECORD_COUNT_V2_1; + } else { + control->ras_num_recs = RAS_NUM_RECS(hdr); + control->ras_record_offset = RAS_RECORD_START; + control->ras_max_record_count = RAS_MAX_RECORD_COUNT; + } control->ras_fri = RAS_OFFSET_TO_INDEX(control, hdr->first_rec_offset); if (hdr->header == RAS_TABLE_HDR_VAL) { DRM_DEBUG_DRIVER("Found existing EEPROM table with %d records", control->ras_num_recs); + + if (hdr->version == RAS_TABLE_VER_V2_1) { + res = __read_table_ras_info(control); + if (res) + return res; + } + res = __verify_ras_table_checksum(control); if (res) DRM_ERROR("RAS table incorrect checksum or error:%d\n", @@ -1136,6 +1363,12 @@ int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control, ras->bad_page_cnt_threshold); } else if (hdr->header == RAS_TABLE_HDR_BAD && amdgpu_bad_page_threshold != 0) { + if (hdr->version == RAS_TABLE_VER_V2_1) { + res = __read_table_ras_info(control); + if (res) + return res; + } + res = __verify_ras_table_checksum(control); if (res) DRM_ERROR("RAS Table incorrect checksum or error:%d\n", |