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@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index bdd1fe73..55772eb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2562,6 +2562,17 @@ 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);
/* early init functions */
--
1.9.1
_______________________________________________
amd-gfx mailing list
amd-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
