drm/amdkfd: kfd expose the hive_id of the device through its node properties

Thunk will generate the XGMI topology information when necessary with the hive_id
for each specified device

Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -476,6 +476,9 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
 		goto kfd_doorbell_error;
 	}
 
+	if (kfd->kfd2kgd->get_hive_id)
+		kfd->hive_id = kfd->kfd2kgd->get_hive_id(kfd->kgd);
+
 	if (kfd_topology_add_device(kfd)) {
 		dev_err(kfd_device, "Error adding device to topology\n");
 		goto kfd_topology_add_device_error;

drivers/gpu/drm/amd/amdkfd/kfd_priv.h

@@ -254,6 +254,9 @@ struct kfd_dev {
 	bool cwsr_enabled;
 	const void *cwsr_isa;
 	unsigned int cwsr_isa_size;
+
+	/* xGMI */
+	uint64_t hive_id;
 };
 
 /* KGD2KFD callbacks */

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

@@ -443,6 +443,8 @@ static ssize_t node_show(struct kobject *kobj, struct attribute *attr,
 			dev->node_props.location_id);
 	sysfs_show_32bit_prop(buffer, "drm_render_minor",
 			dev->node_props.drm_render_minor);
+	sysfs_show_64bit_prop(buffer, "hive_id",
+			dev->node_props.hive_id);
 
 	if (dev->gpu) {
 		log_max_watch_addr =
@@ -1219,6 +1221,8 @@ int kfd_topology_add_device(struct kfd_dev *gpu)
 	dev->node_props.drm_render_minor =
 		gpu->shared_resources.drm_render_minor;
 
+	dev->node_props.hive_id = gpu->hive_id;
+
 	kfd_fill_mem_clk_max_info(dev);
 	kfd_fill_iolink_non_crat_info(dev);
 

drivers/gpu/drm/amd/amdkfd/kfd_topology.h

@@ -49,6 +49,7 @@
 #define HSA_CAP_AQL_QUEUE_DOUBLE_MAP		0x00004000
 
 struct kfd_node_properties {
+	uint64_t hive_id;
 	uint32_t cpu_cores_count;
 	uint32_t simd_count;
 	uint32_t mem_banks_count;