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drm/amdgpu: add reset register dump trace on GPU

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Dump the list of register values to trace event on GPU reset.

Signed-off-by: Somalapuram Amaranath <Amaranath.Somalapuram@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Somalapuram Amaranath
2022-02-23 14:27:43 +05:30
committed by Alex Deucher
parent 5ce5a584cb
commit 15fd09a05a
2 changed files with 33 additions and 0 deletions
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17
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@@ -4638,6 +4638,22 @@ int amdgpu_device_pre_asic_reset(struct amdgpu_device *adev,
return r; return r;
} }
static int amdgpu_reset_reg_dumps(struct amdgpu_device *adev)
{
uint32_t reg_value;
int i;
lockdep_assert_held(&adev->reset_sem);
dump_stack();
for (i = 0; i < adev->num_regs; i++) {
reg_value = RREG32(adev->reset_dump_reg_list[i]);
trace_amdgpu_reset_reg_dumps(adev->reset_dump_reg_list[i], reg_value);
}
return 0;
}
int amdgpu_do_asic_reset(struct list_head *device_list_handle, int amdgpu_do_asic_reset(struct list_head *device_list_handle,
struct amdgpu_reset_context *reset_context) struct amdgpu_reset_context *reset_context)
{ {
@@ -4648,6 +4664,7 @@ int amdgpu_do_asic_reset(struct list_head *device_list_handle,
/* Try reset handler method first */ /* Try reset handler method first */
tmp_adev = list_first_entry(device_list_handle, struct amdgpu_device, tmp_adev = list_first_entry(device_list_handle, struct amdgpu_device,
reset_list); reset_list);
amdgpu_reset_reg_dumps(tmp_adev);
r = amdgpu_reset_perform_reset(tmp_adev, reset_context); r = amdgpu_reset_perform_reset(tmp_adev, reset_context);
/* If reset handler not implemented, continue; otherwise return */ /* If reset handler not implemented, continue; otherwise return */
if (r == -ENOSYS) if (r == -ENOSYS)

16
drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
View File

@@ -536,6 +536,22 @@ TRACE_EVENT(amdgpu_ib_pipe_sync,
__entry->seqno) __entry->seqno)
); );
TRACE_EVENT(amdgpu_reset_reg_dumps,
TP_PROTO(uint32_t address, uint32_t value),
TP_ARGS(address, value),
TP_STRUCT__entry(
__field(uint32_t, address)
__field(uint32_t, value)
),
TP_fast_assign(
__entry->address = address;
__entry->value = value;
),
TP_printk("amdgpu register dump 0x%x: 0x%x",
__entry->address,
__entry->value)
);
#undef AMDGPU_JOB_GET_TIMELINE_NAME #undef AMDGPU_JOB_GET_TIMELINE_NAME
#endif #endif