Commit afb50906 authored by Horace Chen's avatar Horace Chen Committed by Alex Deucher
Browse files

drm/amdgpu: enable WPTR_POLL_ENABLE for sriov on sdma_v6_0 



[Why]
Under SR-IOV, if VF is switched out then its doorbell will be disabled,
SDMA rely on WPTR_POLL to get doorbells which was sent during VF
switched-out time.

[How]
For SR-IOV, set SDMA WPTR_POLL_ENABLE to 1.

Acked-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarHorace Chen <horace.chen@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent ca4ba339

drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c

+4 −1
Original line number Diff line number Diff line
@@ -594,6 +594,9 @@ static int sdma_v6_0_gfx_resume(struct amdgpu_device *adev) 
		       lower_32_bits(ring->rptr_gpu_addr) & 0xFFFFFFFC);



		rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_QUEUE0_RB_CNTL, RPTR_WRITEBACK_ENABLE, 1);

		if (amdgpu_sriov_vf(adev))

			rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_QUEUE0_RB_CNTL, WPTR_POLL_ENABLE, 1);

		else

			rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_QUEUE0_RB_CNTL, WPTR_POLL_ENABLE, 0);

		rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_QUEUE0_RB_CNTL, F32_WPTR_POLL_ENABLE, 1);