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Commit bda31a24 authored by Deepak Sharma's avatar Deepak Sharma Committed by Alex Deucher
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drm/amdgpu: Use GTT for dumb buffer if sg display enabled (v2) 



When vram size <= THRESHOLD(256M) lets use GTT for dumb buffer
allocation. As SG will be enabled with vram size <= 256M
scan out will not be an issue.

v2: Use amdgpu_display_supported_domains to get supported domain.

Signed-off-by: default avatarDeepak Sharma <Deepak.Sharma@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 7bee0572

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

+8 −2
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 
#include <drm/drmP.h>

#include <drm/amdgpu_drm.h>

#include "amdgpu.h"

#include "amdgpu_display.h"



void amdgpu_gem_object_free(struct drm_gem_object *gobj)

{
@@ -749,15 +750,20 @@ int amdgpu_mode_dumb_create(struct drm_file *file_priv, 
	struct amdgpu_device *adev = dev->dev_private;

	struct drm_gem_object *gobj;

	uint32_t handle;

	u32 domain = amdgpu_display_supported_domains(adev);

	int r;



	args->pitch = amdgpu_align_pitch(adev, args->width,

					 DIV_ROUND_UP(args->bpp, 8), 0);

	args->size = (u64)args->pitch * args->height;

	args->size = ALIGN(args->size, PAGE_SIZE);

	if (domain == (AMDGPU_GEM_DOMAIN_VRAM | AMDGPU_GEM_DOMAIN_GTT)) {

		domain = AMDGPU_GEM_DOMAIN_VRAM;

		if (adev->gmc.real_vram_size <= AMDGPU_SG_THRESHOLD)

			domain = AMDGPU_GEM_DOMAIN_GTT;

	}



	r = amdgpu_gem_object_create(adev, args->size, 0,

				     AMDGPU_GEM_DOMAIN_VRAM,

	r = amdgpu_gem_object_create(adev, args->size, 0, domain,

				     AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,

				     false, NULL, &gobj);

	if (r)