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drm/amdgpu: ensure no PCIe peer access for CPU XGMI iolinks

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[Why] Devices with CPU XGMI iolink do not support PCIe peer access.

Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Sierra 2022-08-25 15:42:08 -05:00 committed by Alex Deucher
parent 2640174f4a
commit b97e914552
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -5524,7 +5524,8 @@ bool amdgpu_device_is_peer_accessible(struct amdgpu_device *adev,
~*peer_adev->dev->dma_mask : ~((1ULL << 32) - 1);
resource_size_t aper_limit =
adev->gmc.aper_base + adev->gmc.aper_size - 1;
bool p2p_access = !(pci_p2pdma_distance_many(adev->pdev,
bool p2p_access = !adev->gmc.xgmi.connected_to_cpu &&
!(pci_p2pdma_distance_many(adev->pdev,
&peer_adev->dev, 1, true) < 0);
return pcie_p2p && p2p_access && (adev->gmc.visible_vram_size &&