sparc64: expand MDESC interface
Add the following two APIs to Machine Description (MDESC)
- mdesc_get_node: Searches for a node in the Machine
Description tree based on given information about
that node.
- mdesc_get_node_info: Retrieves information about a
given node.
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/include/asm/mdesc.h b/arch/sparc/include/asm/mdesc.h
index aebeb88..68d1990 100644
--- a/arch/sparc/include/asm/mdesc.h
+++ b/arch/sparc/include/asm/mdesc.h
@@ -16,6 +16,7 @@ struct mdesc_handle *mdesc_grab(void);
void mdesc_release(struct mdesc_handle *);
#define MDESC_NODE_NULL (~(u64)0)
+#define MDESC_MAX_STR_LEN 256
u64 mdesc_node_by_name(struct mdesc_handle *handle,
u64 from_node, const char *name);
@@ -71,6 +72,22 @@ struct mdesc_notifier_client {
void mdesc_register_notifier(struct mdesc_notifier_client *client);
+union md_node_info {
+ struct vdev_port {
+ u64 id; /* id */
+ u64 parent_cfg_hdl; /* parent config handle */
+ const char *name; /* name (property) */
+ } vdev_port;
+ struct ds_port {
+ u64 id; /* id */
+ } ds_port;
+};
+
+u64 mdesc_get_node(struct mdesc_handle *hp, const char *node_name,
+ union md_node_info *node_info);
+int mdesc_get_node_info(struct mdesc_handle *hp, u64 node,
+ const char *node_name, union md_node_info *node_info);
+
void mdesc_fill_in_cpu_data(cpumask_t *mask);
void mdesc_populate_present_mask(cpumask_t *mask);
void mdesc_get_page_sizes(cpumask_t *mask, unsigned long *pgsz_mask);