diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_cper.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_cper.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cper.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cper.c new file mode 100644 index 000000000000..8ce5dc6efcf9 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cper.c @@ -0,0 +1,281 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2025 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ +#include "amdgpu.h" + +static const guid_t MCE = CPER_NOTIFY_MCE; +static const guid_t CMC = CPER_NOTIFY_CMC; +static const guid_t BOOT = BOOT_TYPE; + +static const guid_t CRASHDUMP = AMD_CRASHDUMP; +static const guid_t RUNTIME = AMD_GPU_NONSTANDARD_ERROR; + +static void __inc_entry_length(struct cper_hdr *hdr, uint32_t size) +{ + hdr->record_length += size; +} + +void amdgpu_cper_entry_fill_hdr(struct amdgpu_device *adev, + struct cper_hdr *hdr, + enum amdgpu_cper_type type, + enum cper_error_severity sev) +{ + hdr->signature[0] = 'C'; + hdr->signature[1] = 'P'; + hdr->signature[2] = 'E'; + hdr->signature[3] = 'R'; + hdr->revision = CPER_HDR_REV_1; + hdr->signature_end = 0xFFFFFFFF; + hdr->error_severity = sev; + + hdr->valid_bits.platform_id = 1; + hdr->valid_bits.partition_id = 1; + hdr->valid_bits.timestamp = 1; + /*TODO need to initialize hdr->timestamp */ + + snprintf(hdr->record_id, 8, "%d", atomic_inc_return(&adev->cper.unique_id)); + snprintf(hdr->platform_id, 16, "0x%04X:0x%04X", + adev->pdev->vendor, adev->pdev->device); + /* pmfw version should be part of creator_id according to CPER spec */ + snprintf(hdr->creator_id, 16, "%s", CPER_CREATOR_ID_AMDGPU); + + switch (type) { + case AMDGPU_CPER_TYPE_BOOT: + hdr->notify_type = BOOT; + break; + case AMDGPU_CPER_TYPE_FATAL: + case AMDGPU_CPER_TYPE_BP_THRESHOLD: + hdr->notify_type = MCE; + break; + case AMDGPU_CPER_TYPE_RUNTIME: + if (sev == CPER_SEV_NON_FATAL_CORRECTED) + hdr->notify_type = CMC; + else + hdr->notify_type = MCE; + break; + default: + dev_err(adev->dev, "Unknown CPER Type\n"); + break; + } + + __inc_entry_length(hdr, HDR_LEN); +} + +static int amdgpu_cper_entry_fill_section_desc(struct amdgpu_device *adev, + struct cper_sec_desc *section_desc, + bool bp_threshold, + bool poison, + enum cper_error_severity sev, + guid_t sec_type, + uint32_t section_length, + uint32_t section_offset) +{ + section_desc->revision_minor = CPER_SEC_MINOR_REV_1; + section_desc->revision_major = CPER_SEC_MAJOR_REV_22; + section_desc->sec_offset = section_offset; + section_desc->sec_length = section_length; + section_desc->valid_bits.fru_id = 1; + section_desc->valid_bits.fru_text = 1; + section_desc->flag_bits.primary = 1; + section_desc->severity = sev; + section_desc->sec_type = sec_type; + + if (adev->smuio.funcs && + adev->smuio.funcs->get_socket_id) + snprintf(section_desc->fru_text, 20, "OAM%d", + adev->smuio.funcs->get_socket_id(adev)); + /* TODO: fru_id is 16 bytes in CPER spec, but driver defines it as 20 bytes */ + snprintf(section_desc->fru_id, 16, "%llx", adev->unique_id); + + if (bp_threshold) + section_desc->flag_bits.exceed_err_threshold = 1; + if (poison) + section_desc->flag_bits.latent_err = 1; + + return 0; +} + +int amdgpu_cper_entry_fill_fatal_section(struct amdgpu_device *adev, + struct cper_hdr *hdr, + uint32_t idx, + struct cper_sec_crashdump_reg_data reg_data) +{ + struct cper_sec_desc *section_desc; + struct cper_sec_crashdump_fatal *section; + + section_desc = (struct cper_sec_desc *)((uint8_t *)hdr + SEC_DESC_OFFSET(idx)); + section = (struct cper_sec_crashdump_fatal *)((uint8_t *)hdr + + FATAL_SEC_OFFSET(hdr->sec_cnt, idx)); + + amdgpu_cper_entry_fill_section_desc(adev, section_desc, false, false, + CPER_SEV_FATAL, CRASHDUMP, FATAL_SEC_LEN, + FATAL_SEC_OFFSET(hdr->sec_cnt, idx)); + + section->body.reg_ctx_type = CPER_CTX_TYPE_CRASH; + section->body.reg_arr_size = sizeof(reg_data); + section->body.data = reg_data; + + __inc_entry_length(hdr, SEC_DESC_LEN + FATAL_SEC_LEN); + + return 0; +} + +int amdgpu_cper_entry_fill_runtime_section(struct amdgpu_device *adev, + struct cper_hdr *hdr, + uint32_t idx, + enum cper_error_severity sev, + uint32_t *reg_dump, + uint32_t reg_count) +{ + struct cper_sec_desc *section_desc; + struct cper_sec_nonstd_err *section; + bool poison; + + poison = (sev == CPER_SEV_NON_FATAL_CORRECTED) ? false : true; + section_desc = (struct cper_sec_desc *)((uint8_t *)hdr + SEC_DESC_OFFSET(idx)); + section = (struct cper_sec_nonstd_err *)((uint8_t *)hdr + + NONSTD_SEC_OFFSET(hdr->sec_cnt, idx)); + + amdgpu_cper_entry_fill_section_desc(adev, section_desc, false, poison, + sev, RUNTIME, NONSTD_SEC_LEN, + NONSTD_SEC_OFFSET(hdr->sec_cnt, idx)); + + reg_count = min(reg_count, CPER_ACA_REG_COUNT); + + section->hdr.valid_bits.err_info_cnt = 1; + section->hdr.valid_bits.err_context_cnt = 1; + + section->info.error_type = RUNTIME; + section->info.ms_chk_bits.err_type_valid = 1; + section->ctx.reg_ctx_type = CPER_CTX_TYPE_CRASH; + section->ctx.reg_arr_size = sizeof(section->ctx.reg_dump); + + memcpy(section->ctx.reg_dump, reg_dump, reg_count * sizeof(uint32_t)); + + __inc_entry_length(hdr, SEC_DESC_LEN + NONSTD_SEC_LEN); + + return 0; +} + +int amdgpu_cper_entry_fill_bad_page_threshold_section(struct amdgpu_device *adev, + struct cper_hdr *hdr, + uint32_t idx) +{ + struct cper_sec_desc *section_desc; + struct cper_sec_nonstd_err *section; + + section_desc = (struct cper_sec_desc *)((uint8_t *)hdr + SEC_DESC_OFFSET(idx)); + section = (struct cper_sec_nonstd_err *)((uint8_t *)hdr + + NONSTD_SEC_OFFSET(hdr->sec_cnt, idx)); + + amdgpu_cper_entry_fill_section_desc(adev, section_desc, true, false, + CPER_SEV_FATAL, RUNTIME, NONSTD_SEC_LEN, + NONSTD_SEC_OFFSET(hdr->sec_cnt, idx)); + + section->hdr.valid_bits.err_info_cnt = 1; + section->hdr.valid_bits.err_context_cnt = 1; + + section->info.error_type = RUNTIME; + section->info.ms_chk_bits.err_type_valid = 1; + section->ctx.reg_ctx_type = CPER_CTX_TYPE_CRASH; + section->ctx.reg_arr_size = sizeof(section->ctx.reg_dump); + + /* Hardcoded Reg dump for bad page threshold CPER */ + section->ctx.reg_dump[CPER_ACA_REG_CTL_LO] = 0x1; + section->ctx.reg_dump[CPER_ACA_REG_CTL_HI] = 0x0; + section->ctx.reg_dump[CPER_ACA_REG_STATUS_LO] = 0x137; + section->ctx.reg_dump[CPER_ACA_REG_STATUS_HI] = 0xB0000000; + section->ctx.reg_dump[CPER_ACA_REG_ADDR_LO] = 0x0; + section->ctx.reg_dump[CPER_ACA_REG_ADDR_HI] = 0x0; + section->ctx.reg_dump[CPER_ACA_REG_MISC0_LO] = 0x0; + section->ctx.reg_dump[CPER_ACA_REG_MISC0_HI] = 0x0; + section->ctx.reg_dump[CPER_ACA_REG_CONFIG_LO] = 0x2; + section->ctx.reg_dump[CPER_ACA_REG_CONFIG_HI] = 0x1ff; + section->ctx.reg_dump[CPER_ACA_REG_IPID_LO] = 0x0; + section->ctx.reg_dump[CPER_ACA_REG_IPID_HI] = 0x96; + section->ctx.reg_dump[CPER_ACA_REG_SYND_LO] = 0x0; + section->ctx.reg_dump[CPER_ACA_REG_SYND_HI] = 0x0; + + __inc_entry_length(hdr, SEC_DESC_LEN + NONSTD_SEC_LEN); + + return 0; +} + +struct cper_hdr *amdgpu_cper_alloc_entry(struct amdgpu_device *adev, + enum amdgpu_cper_type type, + uint16_t section_count) +{ + struct cper_hdr *hdr; + uint32_t size = 0; + + size += HDR_LEN; + size += (SEC_DESC_LEN * section_count); + + switch (type) { + case AMDGPU_CPER_TYPE_RUNTIME: + case AMDGPU_CPER_TYPE_BP_THRESHOLD: + size += (NONSTD_SEC_LEN * section_count); + break; + case AMDGPU_CPER_TYPE_FATAL: + size += (FATAL_SEC_LEN * section_count); + break; + case AMDGPU_CPER_TYPE_BOOT: + size += (BOOT_SEC_LEN * section_count); + break; + default: + dev_err(adev->dev, "Unknown CPER Type!\n"); + return NULL; + } + + hdr = kzalloc(size, GFP_KERNEL); + if (!hdr) + return NULL; + + /* Save this early */ + hdr->sec_cnt = section_count; + + return hdr; +} + +int amdgpu_cper_init(struct amdgpu_device *adev) +{ + mutex_init(&adev->cper.cper_lock); + + adev->cper.enabled = true; + adev->cper.max_count = CPER_MAX_ALLOWED_COUNT; + + /*TODO: initialize cper ring*/ + + return 0; +} + +int amdgpu_cper_fini(struct amdgpu_device *adev) +{ + adev->cper.enabled = false; + + /*TODO: free cper ring */ + adev->cper.count = 0; + adev->cper.wptr = 0; + + return 0; +} |