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https://github.com/edk2-porting/linux-next.git
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920c3ed741
And add dummy handlers for the VIO device layer. These will be filled in with real code after the vdc, vnet, and ds drivers are reworked to have simpler dependencies on the VIO device tree. Signed-off-by: David S. Miller <davem@davemloft.net>
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
#ifndef _SPARC64_MDESC_H
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#define _SPARC64_MDESC_H
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#include <linux/types.h>
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#include <linux/cpumask.h>
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#include <asm/prom.h>
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struct mdesc_handle;
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/* Machine description operations are to be surrounded by grab and
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* release calls. The mdesc_handle returned from the grab is
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* the first argument to all of the operational calls that work
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* on mdescs.
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*/
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extern struct mdesc_handle *mdesc_grab(void);
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extern void mdesc_release(struct mdesc_handle *);
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#define MDESC_NODE_NULL (~(u64)0)
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extern u64 mdesc_node_by_name(struct mdesc_handle *handle,
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u64 from_node, const char *name);
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#define mdesc_for_each_node_by_name(__hdl, __node, __name) \
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for (__node = mdesc_node_by_name(__hdl, MDESC_NODE_NULL, __name); \
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(__node) != MDESC_NODE_NULL; \
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__node = mdesc_node_by_name(__hdl, __node, __name))
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/* Access to property values returned from mdesc_get_property() are
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* only valid inside of a mdesc_grab()/mdesc_release() sequence.
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* Once mdesc_release() is called, the memory backed up by these
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* pointers may reference freed up memory.
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*
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* Therefore callers must make copies of any property values
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* they need.
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*
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* These same rules apply to mdesc_node_name().
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*/
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extern const void *mdesc_get_property(struct mdesc_handle *handle,
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u64 node, const char *name, int *lenp);
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extern const char *mdesc_node_name(struct mdesc_handle *hp, u64 node);
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/* MD arc iteration, the standard sequence is:
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*
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* unsigned long arc;
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* mdesc_for_each_arc(arc, handle, node, MDESC_ARC_TYPE_{FWD,BACK}) {
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* unsigned long target = mdesc_arc_target(handle, arc);
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* ...
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* }
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*/
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#define MDESC_ARC_TYPE_FWD "fwd"
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#define MDESC_ARC_TYPE_BACK "back"
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extern u64 mdesc_next_arc(struct mdesc_handle *handle, u64 from,
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const char *arc_type);
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#define mdesc_for_each_arc(__arc, __hdl, __node, __type) \
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for (__arc = mdesc_next_arc(__hdl, __node, __type); \
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(__arc) != MDESC_NODE_NULL; \
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__arc = mdesc_next_arc(__hdl, __arc, __type))
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extern u64 mdesc_arc_target(struct mdesc_handle *hp, u64 arc);
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extern void mdesc_update(void);
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struct mdesc_notifier_client {
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void (*add)(struct mdesc_handle *handle, u64 node);
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void (*remove)(struct mdesc_handle *handle, u64 node);
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const char *node_name;
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struct mdesc_notifier_client *next;
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};
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extern void mdesc_register_notifier(struct mdesc_notifier_client *client);
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extern void mdesc_fill_in_cpu_data(cpumask_t mask);
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extern void sun4v_mdesc_init(void);
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#endif
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