[PATCH] drm/amdgpu: update the domain flags for dumb buffer creation

[Chen, Guchun]

[Public]

Reviewed-by: Guchun Chen <guchun.chen at amd.com>

Regards,
Guchun

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Evan Quan
Sent: Thursday, November 18, 2021 4:27 PM
To: amd-gfx at lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>; Quan, Evan <Evan.Quan at amd.com>; Koenig, Christian <Christian.Koenig at amd.com>
Subject: [PATCH] drm/amdgpu: update the domain flags for dumb buffer creation

After switching to generic framebuffer framework, we rely on the
->dumb_create routine for frame buffer creation. However, the
different domain flags used are not optimal. Add the contiguous flag to directly allocate the scanout BO as one linear buffer.

Fixes: 844612e1149d ("drm/amdgpu: use generic fb helpers instead of setting up AMD own's.")

Signed-off-by: Evan Quan <evan.quan at amd.com>
Reviewed-by: Christian König <christian.koenig at amd.com>
Change-Id: I403bf7a0b265c564b5f3a3343999670e5eb87ca6
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index d07b6aebc449..189e32ee7a6e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -883,7 +883,8 @@ int amdgpu_mode_dumb_create(struct drm_file *file_priv,
 	struct drm_gem_object *gobj;
 	uint32_t handle;
 	u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
-		    AMDGPU_GEM_CREATE_CPU_GTT_USWC;
+		    AMDGPU_GEM_CREATE_CPU_GTT_USWC |
+		    AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
 	u32 domain;
 	int r;
 
--
2.29.0