include/asm-sparc64/mdesc.h

   1 #ifndef _SPARC64_MDESC_H
   2 #define _SPARC64_MDESC_H
   3
   4 #include <linux/types.h>
   5 #include <asm/prom.h>
   6
   7 struct mdesc_handle;
   8
   9 /* Machine description operations are to be surrounded by grab and
  10  * release calls.  The mdesc_handle returned from the grab is
  11  * the first argument to all of the operational calls that work
  12  * on mdescs.
  13  */
  14 extern struct mdesc_handle *mdesc_grab(void);
  15 extern void mdesc_release(struct mdesc_handle *);
  16
  17 #define MDESC_NODE_NULL         (~(u64)0)
  18
  19 extern u64 mdesc_node_by_name(struct mdesc_handle *handle,
  20                               u64 from_node, const char *name);
  21 #define mdesc_for_each_node_by_name(__hdl, __node, __name) \
  22         for (__node = mdesc_node_by_name(__hdl, MDESC_NODE_NULL, __name); \
  23              (__node) != MDESC_NODE_NULL; \
  24              __node = mdesc_node_by_name(__hdl, __node, __name))
  25
  26 extern const void *mdesc_get_property(struct mdesc_handle *handle,
  27                                       u64 node, const char *name, int *lenp);
  28
  29 #define MDESC_ARC_TYPE_FWD      "fwd"
  30 #define MDESC_ARC_TYPE_BACK     "back"
  31
  32 extern u64 mdesc_next_arc(struct mdesc_handle *handle, u64 from,
  33                           const char *arc_type);
  34 #define mdesc_for_each_arc(__arc, __hdl, __node, __type) \
  35         for (__arc = mdesc_next_arc(__hdl, __node, __type); \
  36              (__arc) != MDESC_NODE_NULL; \
  37              __arc = mdesc_next_arc(__hdl, __arc, __type))
  38
  39 extern u64 mdesc_arc_target(struct mdesc_handle *hp, u64 arc);
  40
  41 extern const char *mdesc_node_name(struct mdesc_handle *hp, u64 node);
  42
  43 extern void mdesc_update(void);
  44
  45 extern void sun4v_mdesc_init(void);
  46
  47 #endif