From 8dad4d36e5ee4f3bd2b0997a5d140d56148133fb Mon Sep 17 00:00:00 2001
From: Alex Sierra <alex.sierra@amd.com>
Date: Thu, 15 Jun 2023 10:37:21 -0500
Subject: drm/amdkfd: set coherent host access capability flag
Git-commit: 03d400e7605e3d36abd3f949b25ba806cccff0cb
Patch-mainline: v6.5-rc1
References: jsc#PED-3527 jsc#PED-5475 jsc#PED-6068 jsc#PED-6070 jsc#PED-6116 jsc#PED-6120 jsc#PED-5065 jsc#PED-5477 jsc#PED-5511 jsc#PED-6041 jsc#PED-6069 jsc#PED-6071

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>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index 90b86a6ac7bd..61fc62f3e003 100644
--- 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);
-- 
2.42.0