drivers/gpu/drm/amd/amdgpu/umc_v8_14.c
Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/amdgpu/umc_v8_14.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/gpu/drm/amd/amdgpu/umc_v8_14.c- Extension
.c- Size
- 5147 bytes
- Lines
- 161
- Domain
- Driver Families
- Bucket
- drivers/gpu
- Inferred role
- Driver Families: implementation source
- Status
- source implementation candidate
Why This File Exists
Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
umc_v8_14.hamdgpu_ras.hamdgpu_umc.hamdgpu.humc/umc_8_14_0_offset.humc/umc_8_14_0_sh_mask.h
Detected Declarations
function filesfunction umc_v8_14_clear_error_count_per_channelfunction umc_v8_14_clear_error_countfunction umc_v8_14_query_correctable_error_countfunction umc_v8_14_query_uncorrectable_error_countfunction umc_v8_14_query_error_count_per_channelfunction umc_v8_14_query_ras_error_countfunction umc_v8_14_err_cnt_init_per_channelfunction umc_v8_14_err_cnt_init
Annotated Snippet
#include "umc_v8_14.h"
#include "amdgpu_ras.h"
#include "amdgpu_umc.h"
#include "amdgpu.h"
#include "umc/umc_8_14_0_offset.h"
#include "umc/umc_8_14_0_sh_mask.h"
static inline uint32_t get_umc_v8_14_reg_offset(struct amdgpu_device *adev,
uint32_t umc_inst,
uint32_t ch_inst)
{
return adev->umc.channel_offs * ch_inst + UMC_V8_14_INST_DIST * umc_inst;
}
static int umc_v8_14_clear_error_count_per_channel(struct amdgpu_device *adev,
uint32_t node_inst, uint32_t umc_inst,
uint32_t ch_inst, void *data)
{
uint32_t ecc_err_cnt_addr;
uint32_t umc_reg_offset =
get_umc_v8_14_reg_offset(adev, umc_inst, ch_inst);
ecc_err_cnt_addr =
SOC15_REG_OFFSET(UMC, 0, regUMCCH0_GeccErrCnt);
/* clear error count */
WREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4,
UMC_V8_14_CE_CNT_INIT);
return 0;
}
static void umc_v8_14_clear_error_count(struct amdgpu_device *adev)
{
amdgpu_umc_loop_channels(adev,
umc_v8_14_clear_error_count_per_channel, NULL);
}
static void umc_v8_14_query_correctable_error_count(struct amdgpu_device *adev,
uint32_t umc_reg_offset,
unsigned long *error_count)
{
uint32_t ecc_err_cnt, ecc_err_cnt_addr;
/* UMC 8_14 registers */
ecc_err_cnt_addr =
SOC15_REG_OFFSET(UMC, 0, regUMCCH0_GeccErrCnt);
ecc_err_cnt = RREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4);
*error_count +=
(REG_GET_FIELD(ecc_err_cnt, UMCCH0_GeccErrCnt, GeccErrCnt) -
UMC_V8_14_CE_CNT_INIT);
}
static void umc_v8_14_query_uncorrectable_error_count(struct amdgpu_device *adev,
uint32_t umc_reg_offset,
unsigned long *error_count)
{
uint32_t ecc_err_cnt, ecc_err_cnt_addr;
/* UMC 8_14 registers */
ecc_err_cnt_addr =
SOC15_REG_OFFSET(UMC, 0, regUMCCH0_GeccErrCnt);
ecc_err_cnt = RREG32_PCIE((ecc_err_cnt_addr + umc_reg_offset) * 4);
*error_count +=
(REG_GET_FIELD(ecc_err_cnt, UMCCH0_GeccErrCnt, GeccUnCorrErrCnt) -
UMC_V8_14_CE_CNT_INIT);
}
static int umc_v8_14_query_error_count_per_channel(struct amdgpu_device *adev,
uint32_t node_inst, uint32_t umc_inst,
uint32_t ch_inst, void *data)
{
struct ras_err_data *err_data = (struct ras_err_data *)data;
uint32_t umc_reg_offset =
get_umc_v8_14_reg_offset(adev, umc_inst, ch_inst);
umc_v8_14_query_correctable_error_count(adev,
umc_reg_offset,
&(err_data->ce_count));
umc_v8_14_query_uncorrectable_error_count(adev,
umc_reg_offset,
&(err_data->ue_count));
return 0;
}
static void umc_v8_14_query_ras_error_count(struct amdgpu_device *adev,
void *ras_error_status)
{
Annotation
- Immediate include surface: `umc_v8_14.h`, `amdgpu_ras.h`, `amdgpu_umc.h`, `amdgpu.h`, `umc/umc_8_14_0_offset.h`, `umc/umc_8_14_0_sh_mask.h`.
- Detected declarations: `function files`, `function umc_v8_14_clear_error_count_per_channel`, `function umc_v8_14_clear_error_count`, `function umc_v8_14_query_correctable_error_count`, `function umc_v8_14_query_uncorrectable_error_count`, `function umc_v8_14_query_error_count_per_channel`, `function umc_v8_14_query_ras_error_count`, `function umc_v8_14_err_cnt_init_per_channel`, `function umc_v8_14_err_cnt_init`.
- Atlas domain: Driver Families / drivers/gpu.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.