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drm/amdgpu: skip reservation of discovery tmr region in pre-Navi 

IP discovery is only supported in Navi series and onwards.
There is no need to reserve a portion of vram as discovery
tmr region for pre-Navi adapters.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Hawking Zhang 2020-01-17 01:10:52 +08:00 committed by Alex Deucher
parent e0c116c190
commit 942a0dd2d6
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
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@ -1961,14 +1961,16 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
* reserve TMR memory at the top of VRAM which holds
* IP Discovery data and is protected by PSP.
*/
r = amdgpu_bo_create_kernel_at(adev,
if (adev->discovery_tmr_size > 0) {
r = amdgpu_bo_create_kernel_at(adev,
adev->gmc.real_vram_size - adev->discovery_tmr_size,
adev->discovery_tmr_size,
AMDGPU_GEM_DOMAIN_VRAM,
&adev->discovery_memory,
NULL);
if (r)
return r;
if (r)
return r;
}
DRM_INFO("amdgpu: %uM of VRAM memory ready\n",
(unsigned) (adev->gmc.real_vram_size / (1024 * 1024)));