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drm/amdgpu: enable PCIE atomics ops support

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GPU atomics operation depends on PCIE atomics support.
Always enable PCIE atomics ops support in case that
it hasn't been enabled.

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jack Xiao 2019-05-24 00:13:14 +08:00 committed by Alex Deucher
parent bae17d2a1b
commit b2109d8ed6
1 changed files with 11 additions and 0 deletions
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11
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -2596,6 +2596,17 @@ int amdgpu_device_init(struct amdgpu_device *adev,
if (adev->rio_mem == NULL)
DRM_INFO("PCI I/O BAR is not found.\n");
/* enable PCIE atomic ops */
r = pci_enable_atomic_ops_to_root(adev->pdev,
PCI_EXP_DEVCAP2_ATOMIC_COMP32 |
PCI_EXP_DEVCAP2_ATOMIC_COMP64);
if (r) {
adev->have_atomics_support = false;
DRM_INFO("PCIE atomic ops is not supported\n");
} else {
adev->have_atomics_support = true;
}
amdgpu_device_get_pcie_info(adev);
if (amdgpu_mcbp)