Commit 15fd09a0 authored by Somalapuram Amaranath's avatar Somalapuram Amaranath Committed by Alex Deucher
Browse files

drm/amdgpu: add reset register dump trace on GPU 



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

Signed-off-by: default avatarSomalapuram Amaranath <Amaranath.Somalapuram@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarAndrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5ce5a584

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

+17 −0
Original line number Diff line number Diff line
@@ -4638,6 +4638,22 @@ int amdgpu_device_pre_asic_reset(struct amdgpu_device *adev, 
	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,

			 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 */

	tmp_adev = list_first_entry(device_list_handle, struct amdgpu_device,

				    reset_list);

	amdgpu_reset_reg_dumps(tmp_adev);

	r = amdgpu_reset_perform_reset(tmp_adev, reset_context);

	/* If reset handler not implemented, continue; otherwise return */

	if (r == -ENOSYS)

drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h

+16 −0
Original line number Diff line number Diff line
@@ -536,6 +536,22 @@ TRACE_EVENT(amdgpu_ib_pipe_sync, 
		      __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

#endif