[PATCH 11/11] drm/amdgpu: disable IH ring 1 & 2 WPTR overflow on Vega10

[Alex Deucher]

On Fri, Nov 30, 2018 at 7:36 AM Christian König
<ckoenig.leichtzumerken at gmail.com> wrote:
>
> That should add back pressure on the client.
>
> Signed-off-by: Christian König <christian.koenig at amd.com>

Acked-by: Alex Deucher <alexander.deucher 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 f5c5ea628fdf..dd7f52f08fd7 100644
> --- a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
> +++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
> @@ -193,6 +193,8 @@ 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_RING2,
> +                                  WPTR_OVERFLOW_ENABLE, 0);
>         WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
>
>         /* set rptr, wptr to 0 */
> @@ -207,6 +209,8 @@ 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_RING2,
> +                                  WPTR_OVERFLOW_ENABLE, 0);
>         WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
>
>         /* set rptr, wptr to 0 */
> --
> 2.17.1
>
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