[PATCH 13/33] drm/amd/display: allocate fbc buffer in AMDGPU_GEM_DOMAIN_GTT

[Alex Deucher]

On Mon, Feb 26, 2018 at 3:15 PM, Harry Wentland <harry.wentland at amd.com> wrote:
> From: Shirish S <shirish.s at amd.com>
>
> Currently the FBC buffer is allocated in VRAM, since VRAM usage is
> dedicatedly for scanouts, by allocating FBC back buffer in GTT
> shall help in conserving VRAM for other purposes.

Are there any dGPUs that support FBC?  If so, will this be an issue there?

Alex

>
> Signed-off-by: Shirish S <shirish.s at amd.com>
> Reviewed-by: Charlene Liu <Charlene.Liu at amd.com>
> Acked-by: Harry Wentland <harry.wentland at amd.com>
> ---
>  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index f782518fc424..64a3abed2466 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -374,7 +374,7 @@ static void amdgpu_dm_fbc_init(struct drm_connector *connector)
>
>         if (max_size) {
>                 int r = amdgpu_bo_create_kernel(adev, max_size * 4, PAGE_SIZE,
> -                           AMDGPU_GEM_DOMAIN_VRAM, &compressor->bo_ptr,
> +                           AMDGPU_GEM_DOMAIN_GTT, &compressor->bo_ptr,
>                             &compressor->gpu_addr, &compressor->cpu_addr);
>
>                 if (r)
> --
> 2.14.1
>
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