drm/amdkfd: set coherent host access capability flag

This flag determines whether the host possesses coherent access to
the memory of the device.

Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index 90b86a6ac7bd63f030a1ccef73fa0e582cb19ea3..61fc62f3e0034a1b129ddb4ad298cb2667fa556d 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -2107,6 +2107,10 @@ int kfd_topology_add_device(struct kfd_node *gpu)
        if (KFD_IS_SVM_API_SUPPORTED(dev->gpu->adev))
                dev->node_props.capability |= HSA_CAP_SVMAPI_SUPPORTED;
 
+       if (dev->gpu->adev->gmc.is_app_apu ||
+               dev->gpu->adev->gmc.xgmi.connected_to_cpu)
+               dev->node_props.capability |= HSA_CAP_FLAGS_COHERENTHOSTACCESS;
+
        kfd_debug_print_topology();
 
        kfd_notify_gpu_change(gpu_id, 1);