drm/amdkfd: Enable atomic support for GFX12

Enable flag in KFD and set the atomic support bit in MQD.
Signed-off-by: David Belanger <david.belanger@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_device.c

@@ -232,6 +232,8 @@ static void kfd_device_info_init(struct kfd_dev *kfd,
 			 */
 			kfd->device_info.needs_pci_atomics = true;
 			kfd->device_info.no_atomic_fw_version = kfd->adev->gfx.rs64_enable ? 509 : 0;
+		} else {
+			kfd->device_info.needs_pci_atomics = true;
 		}
 	} else {
 		kfd->device_info.doorbell_size = 4;

drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v12.c

@@ -135,6 +135,9 @@ static void init_mqd(struct mqd_manager *mm, void **mqd,
 	 */
 	m->cp_hqd_hq_status0 = 1 << 14;
 
+	if (amdgpu_amdkfd_have_atomics_support(mm->dev->adev))
+		m->cp_hqd_hq_status0 |= 1 << 29;
+
 	if (q->format == KFD_QUEUE_FORMAT_AQL) {
 		m->cp_hqd_aql_control =
 			1 << CP_HQD_AQL_CONTROL__CONTROL0__SHIFT;