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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/asm-sparc64/mdesc.h
1 #ifndef _SPARC64_MDESC_H
2 #define _SPARC64_MDESC_H
4 #include <linux/types.h>
5 #include <linux/cpumask.h>
10 /* Machine description operations are to be surrounded by grab and
11 * release calls. The mdesc_handle returned from the grab is
12 * the first argument to all of the operational calls that work
15 extern struct mdesc_handle
*mdesc_grab(void);
16 extern void mdesc_release(struct mdesc_handle
*);
18 #define MDESC_NODE_NULL (~(u64)0)
20 extern u64
mdesc_node_by_name(struct mdesc_handle
*handle
,
21 u64 from_node
, const char *name
);
22 #define mdesc_for_each_node_by_name(__hdl, __node, __name) \
23 for (__node = mdesc_node_by_name(__hdl, MDESC_NODE_NULL, __name); \
24 (__node) != MDESC_NODE_NULL; \
25 __node = mdesc_node_by_name(__hdl, __node, __name))
27 /* Access to property values returned from mdesc_get_property() are
28 * only valid inside of a mdesc_grab()/mdesc_release() sequence.
29 * Once mdesc_release() is called, the memory backed up by these
30 * pointers may reference freed up memory.
32 * Therefore callers must make copies of any property values
35 * These same rules apply to mdesc_node_name().
37 extern const void *mdesc_get_property(struct mdesc_handle
*handle
,
38 u64 node
, const char *name
, int *lenp
);
39 extern const char *mdesc_node_name(struct mdesc_handle
*hp
, u64 node
);
41 /* MD arc iteration, the standard sequence is:
44 * mdesc_for_each_arc(arc, handle, node, MDESC_ARC_TYPE_{FWD,BACK}) {
45 * unsigned long target = mdesc_arc_target(handle, arc);
50 #define MDESC_ARC_TYPE_FWD "fwd"
51 #define MDESC_ARC_TYPE_BACK "back"
53 extern u64
mdesc_next_arc(struct mdesc_handle
*handle
, u64 from
,
54 const char *arc_type
);
55 #define mdesc_for_each_arc(__arc, __hdl, __node, __type) \
56 for (__arc = mdesc_next_arc(__hdl, __node, __type); \
57 (__arc) != MDESC_NODE_NULL; \
58 __arc = mdesc_next_arc(__hdl, __arc, __type))
60 extern u64
mdesc_arc_target(struct mdesc_handle
*hp
, u64 arc
);
62 extern void mdesc_update(void);
64 struct mdesc_notifier_client
{
65 void (*add
)(struct mdesc_handle
*handle
, u64 node
);
66 void (*remove
)(struct mdesc_handle
*handle
, u64 node
);
68 const char *node_name
;
69 struct mdesc_notifier_client
*next
;
72 extern void mdesc_register_notifier(struct mdesc_notifier_client
*client
);
74 extern void mdesc_fill_in_cpu_data(cpumask_t mask
);
76 extern void sun4v_mdesc_init(void);