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| author | Samuel Li <Samuel.Li@amd.com> | 2018-04-18 16:15:52 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-05-15 13:43:49 -0500 |
| commit | 6c8d74caa2fa33908ecd07fb1cf1b7bc629b367a (patch) | |
| tree | b3e668a051e8b537b919920ae938070dc78f5c31 /drivers/gpu/drm/amd/amdgpu/amdgpu.h | |
| parent | 9e70b539292652d31091568f89e73b54e3a4f79d (diff) | |
| download | op-kernel-dev-6c8d74caa2fa33908ecd07fb1cf1b7bc629b367a.zip op-kernel-dev-6c8d74caa2fa33908ecd07fb1cf1b7bc629b367a.tar.gz | |
drm/amdgpu: Enable scatter gather display support
Enables sg display if vram size <= THRESHOLD(256M); otherwise
still use vram as display buffer.
This patch fixed some potention issues introduced by change
"allow framebuffer in GART memory as well" due to CZ/ST hardware
limitation.
v2: Change default setting to auto.
v3: Move some logic from amdgpu_display_framebuffer_domains()
to pin function, suggested by Christian.
v4: Split into several patches.
v5: Drop module parameter for now.
Signed-off-by: Samuel Li <Samuel.Li@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 7570055..03a2c0be 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -138,6 +138,7 @@ extern int amdgpu_si_support; extern int amdgpu_cik_support; #endif +#define AMDGPU_SG_THRESHOLD (256*1024*1024) #define AMDGPU_DEFAULT_GTT_SIZE_MB 3072ULL /* 3GB by default */ #define AMDGPU_WAIT_IDLE_TIMEOUT_IN_MS 3000 #define AMDGPU_MAX_USEC_TIMEOUT 100000 /* 100 ms */ |
