diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c | 486 |
1 files changed, 486 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c index 8d9ff9e151de..3ca03b5e0f91 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c @@ -27,6 +27,16 @@ #include "umc/umc_6_7_0_offset.h" #include "umc/umc_6_7_0_sh_mask.h" +static bool amdgpu_mca_is_deferred_error(struct amdgpu_device *adev, + uint64_t mc_status) +{ + if (adev->umc.ras->check_ecc_err_status) + return adev->umc.ras->check_ecc_err_status(adev, + AMDGPU_MCA_ERROR_TYPE_DE, &mc_status); + + return false; +} + void amdgpu_mca_query_correctable_error_count(struct amdgpu_device *adev, uint64_t mc_status_addr, unsigned long *error_count) @@ -142,3 +152,479 @@ int amdgpu_mca_mpio_ras_sw_init(struct amdgpu_device *adev) return 0; } + +static void amdgpu_mca_bank_set_init(struct mca_bank_set *mca_set) +{ + if (!mca_set) + return; + + memset(mca_set, 0, sizeof(*mca_set)); + INIT_LIST_HEAD(&mca_set->list); +} + +static int amdgpu_mca_bank_set_add_entry(struct mca_bank_set *mca_set, struct mca_bank_entry *entry) +{ + struct mca_bank_node *node; + + if (!entry) + return -EINVAL; + + node = kvzalloc(sizeof(*node), GFP_KERNEL); + if (!node) + return -ENOMEM; + + memcpy(&node->entry, entry, sizeof(*entry)); + + INIT_LIST_HEAD(&node->node); + list_add_tail(&node->node, &mca_set->list); + + mca_set->nr_entries++; + + return 0; +} + +static int amdgpu_mca_bank_set_merge(struct mca_bank_set *mca_set, struct mca_bank_set *new) +{ + struct mca_bank_node *node; + + list_for_each_entry(node, &new->list, node) + amdgpu_mca_bank_set_add_entry(mca_set, &node->entry); + + return 0; +} + +static void amdgpu_mca_bank_set_remove_node(struct mca_bank_set *mca_set, struct mca_bank_node *node) +{ + if (!node) + return; + + list_del(&node->node); + kvfree(node); + + mca_set->nr_entries--; +} + +static void amdgpu_mca_bank_set_release(struct mca_bank_set *mca_set) +{ + struct mca_bank_node *node, *tmp; + + if (list_empty(&mca_set->list)) + return; + + list_for_each_entry_safe(node, tmp, &mca_set->list, node) + amdgpu_mca_bank_set_remove_node(mca_set, node); +} + +void amdgpu_mca_smu_init_funcs(struct amdgpu_device *adev, const struct amdgpu_mca_smu_funcs *mca_funcs) +{ + struct amdgpu_mca *mca = &adev->mca; + + mca->mca_funcs = mca_funcs; +} + +int amdgpu_mca_init(struct amdgpu_device *adev) +{ + struct amdgpu_mca *mca = &adev->mca; + struct mca_bank_cache *mca_cache; + int i; + + atomic_set(&mca->ue_update_flag, 0); + + for (i = 0; i < ARRAY_SIZE(mca->mca_caches); i++) { + mca_cache = &mca->mca_caches[i]; + mutex_init(&mca_cache->lock); + amdgpu_mca_bank_set_init(&mca_cache->mca_set); + } + + return 0; +} + +void amdgpu_mca_fini(struct amdgpu_device *adev) +{ + struct amdgpu_mca *mca = &adev->mca; + struct mca_bank_cache *mca_cache; + int i; + + atomic_set(&mca->ue_update_flag, 0); + + for (i = 0; i < ARRAY_SIZE(mca->mca_caches); i++) { + mca_cache = &mca->mca_caches[i]; + amdgpu_mca_bank_set_release(&mca_cache->mca_set); + mutex_destroy(&mca_cache->lock); + } +} + +int amdgpu_mca_reset(struct amdgpu_device *adev) +{ + amdgpu_mca_fini(adev); + + return amdgpu_mca_init(adev); +} + +int amdgpu_mca_smu_set_debug_mode(struct amdgpu_device *adev, bool enable) +{ + const struct amdgpu_mca_smu_funcs *mca_funcs = adev->mca.mca_funcs; + + if (mca_funcs && mca_funcs->mca_set_debug_mode) + return mca_funcs->mca_set_debug_mode(adev, enable); + + return -EOPNOTSUPP; +} + +static void amdgpu_mca_smu_mca_bank_dump(struct amdgpu_device *adev, int idx, struct mca_bank_entry *entry, + struct ras_query_context *qctx) +{ + u64 event_id = qctx ? qctx->evid.event_id : RAS_EVENT_INVALID_ID; + + RAS_EVENT_LOG(adev, event_id, HW_ERR "Accelerator Check Architecture events logged\n"); + RAS_EVENT_LOG(adev, event_id, HW_ERR "aca entry[%02d].STATUS=0x%016llx\n", + idx, entry->regs[MCA_REG_IDX_STATUS]); + RAS_EVENT_LOG(adev, event_id, HW_ERR "aca entry[%02d].ADDR=0x%016llx\n", + idx, entry->regs[MCA_REG_IDX_ADDR]); + RAS_EVENT_LOG(adev, event_id, HW_ERR "aca entry[%02d].MISC0=0x%016llx\n", + idx, entry->regs[MCA_REG_IDX_MISC0]); + RAS_EVENT_LOG(adev, event_id, HW_ERR "aca entry[%02d].IPID=0x%016llx\n", + idx, entry->regs[MCA_REG_IDX_IPID]); + RAS_EVENT_LOG(adev, event_id, HW_ERR "aca entry[%02d].SYND=0x%016llx\n", + idx, entry->regs[MCA_REG_IDX_SYND]); +} + +static int amdgpu_mca_smu_get_valid_mca_count(struct amdgpu_device *adev, enum amdgpu_mca_error_type type, uint32_t *count) +{ + const struct amdgpu_mca_smu_funcs *mca_funcs = adev->mca.mca_funcs; + + if (!count) + return -EINVAL; + + if (mca_funcs && mca_funcs->mca_get_valid_mca_count) + return mca_funcs->mca_get_valid_mca_count(adev, type, count); + + return -EOPNOTSUPP; +} + +static int amdgpu_mca_smu_get_mca_entry(struct amdgpu_device *adev, enum amdgpu_mca_error_type type, + int idx, struct mca_bank_entry *entry) +{ + const struct amdgpu_mca_smu_funcs *mca_funcs = adev->mca.mca_funcs; + int count; + + if (!mca_funcs || !mca_funcs->mca_get_mca_entry) + return -EOPNOTSUPP; + + switch (type) { + case AMDGPU_MCA_ERROR_TYPE_UE: + count = mca_funcs->max_ue_count; + break; + case AMDGPU_MCA_ERROR_TYPE_CE: + count = mca_funcs->max_ce_count; + break; + default: + return -EINVAL; + } + + if (idx >= count) + return -EINVAL; + + return mca_funcs->mca_get_mca_entry(adev, type, idx, entry); +} + +static bool amdgpu_mca_bank_should_update(struct amdgpu_device *adev, enum amdgpu_mca_error_type type) +{ + struct amdgpu_mca *mca = &adev->mca; + bool ret = true; + + /* + * Because the UE Valid MCA count will only be cleared after reset, + * in order to avoid repeated counting of the error count, + * the aca bank is only updated once during the gpu recovery stage. + */ + if (type == AMDGPU_MCA_ERROR_TYPE_UE) { + if (amdgpu_ras_intr_triggered()) + ret = atomic_cmpxchg(&mca->ue_update_flag, 0, 1) == 0; + else + atomic_set(&mca->ue_update_flag, 0); + } + + return ret; +} + +static bool amdgpu_mca_bank_should_dump(struct amdgpu_device *adev, enum amdgpu_mca_error_type type, + struct mca_bank_entry *entry) +{ + bool ret; + + switch (type) { + case AMDGPU_MCA_ERROR_TYPE_CE: + ret = amdgpu_mca_is_deferred_error(adev, entry->regs[MCA_REG_IDX_STATUS]); + break; + case AMDGPU_MCA_ERROR_TYPE_UE: + default: + ret = true; + break; + } + + return ret; +} + +static int amdgpu_mca_smu_get_mca_set(struct amdgpu_device *adev, enum amdgpu_mca_error_type type, struct mca_bank_set *mca_set, + struct ras_query_context *qctx) +{ + struct mca_bank_entry entry; + uint32_t count = 0, i; + int ret; + + if (!mca_set) + return -EINVAL; + + if (!amdgpu_mca_bank_should_update(adev, type)) + return 0; + + ret = amdgpu_mca_smu_get_valid_mca_count(adev, type, &count); + if (ret) + return ret; + + for (i = 0; i < count; i++) { + memset(&entry, 0, sizeof(entry)); + ret = amdgpu_mca_smu_get_mca_entry(adev, type, i, &entry); + if (ret) + return ret; + + amdgpu_mca_bank_set_add_entry(mca_set, &entry); + + if (amdgpu_mca_bank_should_dump(adev, type, &entry)) + amdgpu_mca_smu_mca_bank_dump(adev, i, &entry, qctx); + } + + return 0; +} + +static int amdgpu_mca_smu_parse_mca_error_count(struct amdgpu_device *adev, enum amdgpu_ras_block blk, + enum amdgpu_mca_error_type type, struct mca_bank_entry *entry, uint32_t *count) +{ + const struct amdgpu_mca_smu_funcs *mca_funcs = adev->mca.mca_funcs; + + if (!count || !entry) + return -EINVAL; + + if (!mca_funcs || !mca_funcs->mca_parse_mca_error_count) + return -EOPNOTSUPP; + + return mca_funcs->mca_parse_mca_error_count(adev, blk, type, entry, count); +} + +static int amdgpu_mca_dispatch_mca_set(struct amdgpu_device *adev, enum amdgpu_ras_block blk, enum amdgpu_mca_error_type type, + struct mca_bank_set *mca_set, struct ras_err_data *err_data) +{ + struct amdgpu_smuio_mcm_config_info mcm_info; + struct mca_bank_node *node, *tmp; + struct mca_bank_entry *entry; + uint32_t count; + int ret; + + if (!mca_set) + return -EINVAL; + + if (!mca_set->nr_entries) + return 0; + + list_for_each_entry_safe(node, tmp, &mca_set->list, node) { + entry = &node->entry; + + count = 0; + ret = amdgpu_mca_smu_parse_mca_error_count(adev, blk, type, entry, &count); + if (ret && ret != -EOPNOTSUPP) + return ret; + + if (!count) + continue; + + memset(&mcm_info, 0, sizeof(mcm_info)); + + mcm_info.socket_id = entry->info.socket_id; + mcm_info.die_id = entry->info.aid; + + if (type == AMDGPU_MCA_ERROR_TYPE_UE) { + amdgpu_ras_error_statistic_ue_count(err_data, + &mcm_info, (uint64_t)count); + } else { + if (amdgpu_mca_is_deferred_error(adev, entry->regs[MCA_REG_IDX_STATUS])) + amdgpu_ras_error_statistic_de_count(err_data, + &mcm_info, (uint64_t)count); + else + amdgpu_ras_error_statistic_ce_count(err_data, + &mcm_info, (uint64_t)count); + } + + amdgpu_mca_bank_set_remove_node(mca_set, node); + } + + return 0; +} + +static int amdgpu_mca_add_mca_set_to_cache(struct amdgpu_device *adev, enum amdgpu_mca_error_type type, struct mca_bank_set *new) +{ + struct mca_bank_cache *mca_cache = &adev->mca.mca_caches[type]; + int ret; + + mutex_lock(&mca_cache->lock); + ret = amdgpu_mca_bank_set_merge(&mca_cache->mca_set, new); + mutex_unlock(&mca_cache->lock); + + return ret; +} + +int amdgpu_mca_smu_log_ras_error(struct amdgpu_device *adev, enum amdgpu_ras_block blk, enum amdgpu_mca_error_type type, + struct ras_err_data *err_data, struct ras_query_context *qctx) +{ + struct mca_bank_set mca_set; + struct mca_bank_cache *mca_cache = &adev->mca.mca_caches[type]; + int ret; + + amdgpu_mca_bank_set_init(&mca_set); + + ret = amdgpu_mca_smu_get_mca_set(adev, type, &mca_set, qctx); + if (ret) + goto out_mca_release; + + ret = amdgpu_mca_dispatch_mca_set(adev, blk, type, &mca_set, err_data); + if (ret) + goto out_mca_release; + + /* add remain mca bank to mca cache */ + if (mca_set.nr_entries) { + ret = amdgpu_mca_add_mca_set_to_cache(adev, type, &mca_set); + if (ret) + goto out_mca_release; + } + + /* dispatch mca set again if mca cache has valid data */ + mutex_lock(&mca_cache->lock); + if (mca_cache->mca_set.nr_entries) + ret = amdgpu_mca_dispatch_mca_set(adev, blk, type, &mca_cache->mca_set, err_data); + mutex_unlock(&mca_cache->lock); + +out_mca_release: + amdgpu_mca_bank_set_release(&mca_set); + + return ret; +} + +#if defined(CONFIG_DEBUG_FS) +static int amdgpu_mca_smu_debug_mode_set(void *data, u64 val) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)data; + int ret; + + ret = amdgpu_ras_set_mca_debug_mode(adev, val ? true : false); + if (ret) + return ret; + + dev_info(adev->dev, "amdgpu set smu mca debug mode %s success\n", val ? "on" : "off"); + + return 0; +} + +static void mca_dump_entry(struct seq_file *m, struct mca_bank_entry *entry) +{ + int i, idx = entry->idx; + int reg_idx_array[] = { + MCA_REG_IDX_STATUS, + MCA_REG_IDX_ADDR, + MCA_REG_IDX_MISC0, + MCA_REG_IDX_IPID, + MCA_REG_IDX_SYND, + }; + + seq_printf(m, "mca entry[%d].type: %s\n", idx, entry->type == AMDGPU_MCA_ERROR_TYPE_UE ? "UE" : "CE"); + seq_printf(m, "mca entry[%d].ip: %d\n", idx, entry->ip); + seq_printf(m, "mca entry[%d].info: socketid:%d aid:%d hwid:0x%03x mcatype:0x%04x\n", + idx, entry->info.socket_id, entry->info.aid, entry->info.hwid, entry->info.mcatype); + + for (i = 0; i < ARRAY_SIZE(reg_idx_array); i++) + seq_printf(m, "mca entry[%d].regs[%d]: 0x%016llx\n", idx, reg_idx_array[i], entry->regs[reg_idx_array[i]]); +} + +static int mca_dump_show(struct seq_file *m, enum amdgpu_mca_error_type type) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)m->private; + struct mca_bank_node *node; + struct mca_bank_set mca_set; + struct ras_query_context qctx; + int ret; + + amdgpu_mca_bank_set_init(&mca_set); + + qctx.evid.event_id = RAS_EVENT_INVALID_ID; + ret = amdgpu_mca_smu_get_mca_set(adev, type, &mca_set, &qctx); + if (ret) + goto err_free_mca_set; + + seq_printf(m, "amdgpu smu %s valid mca count: %d\n", + type == AMDGPU_MCA_ERROR_TYPE_UE ? "UE" : "CE", mca_set.nr_entries); + + if (!mca_set.nr_entries) + goto err_free_mca_set; + + list_for_each_entry(node, &mca_set.list, node) + mca_dump_entry(m, &node->entry); + + /* add mca bank to mca bank cache */ + ret = amdgpu_mca_add_mca_set_to_cache(adev, type, &mca_set); + +err_free_mca_set: + amdgpu_mca_bank_set_release(&mca_set); + + return ret; +} + +static int mca_dump_ce_show(struct seq_file *m, void *unused) +{ + return mca_dump_show(m, AMDGPU_MCA_ERROR_TYPE_CE); +} + +static int mca_dump_ce_open(struct inode *inode, struct file *file) +{ + return single_open(file, mca_dump_ce_show, inode->i_private); +} + +static const struct file_operations mca_ce_dump_debug_fops = { + .owner = THIS_MODULE, + .open = mca_dump_ce_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int mca_dump_ue_show(struct seq_file *m, void *unused) +{ + return mca_dump_show(m, AMDGPU_MCA_ERROR_TYPE_UE); +} + +static int mca_dump_ue_open(struct inode *inode, struct file *file) +{ + return single_open(file, mca_dump_ue_show, inode->i_private); +} + +static const struct file_operations mca_ue_dump_debug_fops = { + .owner = THIS_MODULE, + .open = mca_dump_ue_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +DEFINE_DEBUGFS_ATTRIBUTE(mca_debug_mode_fops, NULL, amdgpu_mca_smu_debug_mode_set, "%llu\n"); +#endif + +void amdgpu_mca_smu_debugfs_init(struct amdgpu_device *adev, struct dentry *root) +{ +#if defined(CONFIG_DEBUG_FS) + if (!root) + return; + + debugfs_create_file("mca_debug_mode", 0200, root, adev, &mca_debug_mode_fops); + debugfs_create_file("mca_ue_dump", 0400, root, adev, &mca_ue_dump_debug_fops); + debugfs_create_file("mca_ce_dump", 0400, root, adev, &mca_ce_dump_debug_fops); +#endif +} + |