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drm/amdgpu: enable pdb0 for hibernation on SRIOV

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When switching to new GPU index after hibernation and then resume,
VRAM offset of each VRAM BO will be changed, and the cached gpu
addresses needed to updated.

This is to enable pdb0 and switch to use pdb0-based virtual gpu
address by default in amdgpu_bo_create_reserved(). since the virtual
addresses do not change, this can avoid the need to update all
cached gpu addresses all over the codebase.

Signed-off-by: Emily Deng <Emily.Deng@amd.com>
Signed-off-by: Samuel Zhang <guoqing.zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Samuel Zhang
2025-04-11 16:19:09 +08:00
committed by Alex Deucher
parent 18b66a6c2a
commit 2f405eb45c
5 changed files with 40 additions and 16 deletions
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8
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
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@@ -1722,7 +1722,7 @@ static void gmc_v9_0_vram_gtt_location(struct amdgpu_device *adev,
/* add the xgmi offset of the physical node */
base += adev->gmc.xgmi.physical_node_id * adev->gmc.xgmi.node_segment_size;
if (adev->gmc.xgmi.connected_to_cpu) {
if (amdgpu_gmc_is_pdb0_enabled(adev)) {
amdgpu_gmc_sysvm_location(adev, mc);
} else {
amdgpu_gmc_vram_location(adev, mc, base);
@@ -1837,7 +1837,7 @@ static int gmc_v9_0_gart_init(struct amdgpu_device *adev)
return 0;
}
if (adev->gmc.xgmi.connected_to_cpu) {
if (amdgpu_gmc_is_pdb0_enabled(adev)) {
adev->gmc.vmid0_page_table_depth = 1;
adev->gmc.vmid0_page_table_block_size = 12;
} else {
@@ -1863,7 +1863,7 @@ static int gmc_v9_0_gart_init(struct amdgpu_device *adev)
if (r)
return r;
if (adev->gmc.xgmi.connected_to_cpu)
if (amdgpu_gmc_is_pdb0_enabled(adev))
r = amdgpu_gmc_pdb0_alloc(adev);
}
@@ -2363,7 +2363,7 @@ static int gmc_v9_0_gart_enable(struct amdgpu_device *adev)
{
int r;
if (adev->gmc.xgmi.connected_to_cpu)
if (amdgpu_gmc_is_pdb0_enabled(adev))
amdgpu_gmc_init_pdb0(adev);
if (adev->gart.bo == NULL) {