From b2109d8ed6976569ba20da4db6eb64392ec7879d Mon Sep 17 00:00:00 2001 From: Jack Xiao Date: Fri, 24 May 2019 00:13:14 +0800 Subject: [PATCH] drm/amdgpu: enable PCIE atomics ops support 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 Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher --- 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 ea79763577c6..802809aa801d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -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) -- 2.20.1