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drm/amdgpu/vce1: Check if VRAM address is lower than GART.

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Previously, I had assumed this was not possible
so it was OK to not handle it, but now we got a report
from a user who has a board that is configured this way.

When the VCPU BO is already located in a low 32-bit address
in VRAM (eg. when VRAM is mapped to the low address space),
don't do the workaround.

Fixes: 71aec08f80 ("amdgpu/vce: use amdgpu_gtt_mgr_alloc_entries")
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Timur Kristóf
2026-05-13 22:04:11 +02:00
committed by Alex Deucher
parent c1dc555e76
commit f370ec9b16
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/vce_v1_0.c
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@@ -542,6 +542,9 @@ static int vce_v1_0_ensure_vcpu_bo_32bit_addr(struct amdgpu_device *adev)
u64 vce_gart_start_offs;
int r;
if (adev->gmc.vram_start < adev->gmc.gart_start)
return amdgpu_bo_gpu_offset(adev->vce.vcpu_bo) <= max_vcpu_bo_addr ? 0 : -EINVAL;
r = amdgpu_gtt_mgr_alloc_entries(&adev->mman.gtt_mgr,
&adev->vce.gart_node, num_pages,
DRM_MM_INSERT_LOW);