Commit 942a0dd2 authored by Hawking Zhang's avatar Hawking Zhang Committed by Alex Deucher
Browse files

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: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: default avatarLikun Gao <Likun.Gao@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent e0c116c1

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

+5 −3
Original line number Diff line number Diff line
@@ -1961,6 +1961,7 @@ 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.

	 */

	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,
@@ -1969,6 +1970,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev) 
			NULL);

		if (r)

			return r;

	}



	DRM_INFO("amdgpu: %uM of VRAM memory ready\n",

		 (unsigned) (adev->gmc.real_vram_size / (1024 * 1024)));

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