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drm/amdgpu: reserve umf hole size at vram high end for gfx v12.1

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This region is reserved by firmware thus carve it out in driver.

v2: set reserve size based on aid configuration.

Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Le Ma 2025-11-07 15:23:32 +08:00 • committed by Alex Deucher
parent af26fa751c
commit a26198f122
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
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@ -1835,7 +1835,13 @@ static int amdgpu_ttm_reserve_tmr(struct amdgpu_device *adev)
amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 4) ||
amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 5, 0)))
reserve_size = max(reserve_size, (uint32_t)280 << 20);
else if (!reserve_size)
else if (!adev->bios &&
amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(12, 1, 0)) {
if (hweight32(adev->aid_mask) == 1)
reserve_size = max(reserve_size, (uint32_t)128 << 20);
else
reserve_size = max(reserve_size, (uint32_t)144 << 20);
} else if (!reserve_size)
reserve_size = DISCOVERY_TMR_OFFSET;
if (mem_train_support) {