[PATCH 1/3] drm/amdgpu: change Vega IH ring 1 config

[Christian König]

Ping? Can anybody review this?

Thanks,
Christian.

Am 04.03.19 um 20:10 schrieb Christian König:
> Disable overflow and enable full drain. This makes fault handling on ring 1
> much more reliable since we don't generate back pressure any more.
>
> Signed-off-by: Christian König <christian.koenig at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/vega10_ih.c | 4 ++++
>   1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
> index 6d1f804277f8..d4a3cc413af8 100644
> --- a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
> +++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
> @@ -203,6 +203,10 @@ static int vega10_ih_irq_init(struct amdgpu_device *adev)
>   
>   		ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
>   		ih_rb_cntl = vega10_ih_rb_cntl(ih, ih_rb_cntl);
> +		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
> +					   WPTR_OVERFLOW_ENABLE, 0);
> +		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
> +					   RB_FULL_DRAIN_ENABLE, 1);
>   		WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
>   
>   		/* set rptr, wptr to 0 */