#ifndef _SPARC64_MDESC_H #define _SPARC64_MDESC_H #include <linux/types.h> #include <linux/cpumask.h> #include <asm/prom.h> struct mdesc_handle; /* Machine description operations are to be surrounded by grab and * release calls. The mdesc_handle returned from the grab is * the first argument to all of the operational calls that work * on mdescs. */ extern struct mdesc_handle *mdesc_grab(void); extern void mdesc_release(struct mdesc_handle *); #define MDESC_NODE_NULL (~(u64)0) extern u64 mdesc_node_by_name(struct mdesc_handle *handle, u64 from_node, const char *name); #define mdesc_for_each_node_by_name(__hdl, __node, __name) \ for (__node = mdesc_node_by_name(__hdl, MDESC_NODE_NULL, __name); \ (__node) != MDESC_NODE_NULL; \ __node = mdesc_node_by_name(__hdl, __node, __name)) /* Access to property values returned from mdesc_get_property() are * only valid inside of a mdesc_grab()/mdesc_release() sequence. * Once mdesc_release() is called, the memory backed up by these * pointers may reference freed up memory. * * Therefore callers must make copies of any property values * they need. * * These same rules apply to mdesc_node_name(). */ extern const void *mdesc_get_property(struct mdesc_handle *handle, u64 node, const char *name, int *lenp); extern const char *mdesc_node_name(struct mdesc_handle *hp, u64 node); /* MD arc iteration, the standard sequence is: * * unsigned long arc; * mdesc_for_each_arc(arc, handle, node, MDESC_ARC_TYPE_{FWD,BACK}) { * unsigned long target = mdesc_arc_target(handle, arc); * ... * } */ #define MDESC_ARC_TYPE_FWD "fwd" #define MDESC_ARC_TYPE_BACK "back" extern u64 mdesc_next_arc(struct mdesc_handle *handle, u64 from, const char *arc_type); #define mdesc_for_each_arc(__arc, __hdl, __node, __type) \ for (__arc = mdesc_next_arc(__hdl, __node, __type); \ (__arc) != MDESC_NODE_NULL; \ __arc = mdesc_next_arc(__hdl, __arc, __type)) extern u64 mdesc_arc_target(struct mdesc_handle *hp, u64 arc); extern void mdesc_update(void); struct mdesc_notifier_client { void (*add)(struct mdesc_handle *handle, u64 node); void (*remove)(struct mdesc_handle *handle, u64 node); const char *node_name; struct mdesc_notifier_client *next; }; extern void mdesc_register_notifier(struct mdesc_notifier_client *client); extern void mdesc_fill_in_cpu_data(cpumask_t *mask); extern void mdesc_populate_present_mask(cpumask_t *mask); extern void sun4v_mdesc_init(void); #endif