[PATCH 2/2] drm/amdgpu: ih doorbell size of range changed for nbio v7.4

[Alex Deucher]

On Wed, Mar 18, 2020 at 7:38 PM Alex Sierra <alex.sierra at amd.com> wrote:
>
> [Why]
> nbio v7.4 size of ih doorbell range is 64 bit. This requires 2 DWords per register.
>
> [How]
> Change ih doorbell size from 2 to 4. This means two Dwords per ring.
> Current configuration uses two ih rings.
>
> Change-Id: Iae28c22dd6e650f56286bfa0d9e002a8562fa855
> Signed-off-by: Alex Sierra <alex.sierra at amd.com>

Series is:
Acked-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> index 149d386590df..263dbb1f92ee 100644
> --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> @@ -185,7 +185,7 @@ static void nbio_v7_4_ih_doorbell_range(struct amdgpu_device *adev,
>
>         if (use_doorbell) {
>                 ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, OFFSET, doorbell_index);
> -               ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 2);
> +               ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 4);
>         } else
>                 ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 0);
>
> --
> 2.17.1
>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx