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drm/amdgpu: Set atomics to true for xgmi

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xgmi support atomics between links. Set them to true. This only set for
GFX12 onwards to avoid regression on older generations

v2: Use correct xgmi flag that indicates CPU connection

Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Harish Kasiviswanathan
2026-02-12 12:13:26 -05:00
committed by Alex Deucher
parent 09da66f139
commit 23c098b5fc
1 changed files with 4 additions and 3 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@@ -4615,9 +4615,10 @@ int amdgpu_device_init(struct amdgpu_device *adev,
/* APUs w/ gfx9 onwards doesn't reply on PCIe atomics, rather it is a
* internal path natively support atomics, set have_atomics_support to true.
*/
} else if ((adev->flags & AMD_IS_APU) &&
(amdgpu_ip_version(adev, GC_HWIP, 0) >
IP_VERSION(9, 0, 0))) {
} else if ((adev->flags & AMD_IS_APU &&
amdgpu_ip_version(adev, GC_HWIP, 0) > IP_VERSION(9, 0, 0)) ||
(adev->gmc.xgmi.connected_to_cpu &&
amdgpu_ip_version(adev, GC_HWIP, 0) >= IP_VERSION(12, 1, 0))) {
adev->have_atomics_support = true;
} else {
adev->have_atomics_support =