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memobj: add lookup_page method

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NAKAMURA Gou
2016-03-14 18:35:03 +09:00
parent d6c51ff997
commit fbd9dc878b
1 changed files with 11 additions and 0 deletions
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11
kernel/include/memobj.h
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@ -47,6 +47,7 @@ typedef int memobj_get_page_func_t(struct memobj *obj, off_t off, int p2align, u
typedef uintptr_t memobj_copy_page_func_t(struct memobj *obj, uintptr_t orgphys, int p2align);
typedef int memobj_flush_page_func_t(struct memobj *obj, uintptr_t phys, size_t pgsize);
typedef int memobj_invalidate_page_func_t(struct memobj *obj, uintptr_t phys, size_t pgsize);
typedef int memobj_lookup_page_func_t(struct memobj *obj, off_t off, int p2align, uintptr_t *physp, unsigned long *flag);
struct memobj_ops {
memobj_release_func_t * release;
@ -55,6 +56,7 @@ struct memobj_ops {
memobj_copy_page_func_t * copy_page;
memobj_flush_page_func_t * flush_page;
memobj_invalidate_page_func_t * invalidate_page;
memobj_lookup_page_func_t * lookup_page;
};
static inline void memobj_release(struct memobj *obj)
@ -106,6 +108,15 @@ static inline int memobj_invalidate_page(struct memobj *obj, uintptr_t phys,
return 0;
}
static inline int memobj_lookup_page(struct memobj *obj, off_t off,
int p2align, uintptr_t *physp, unsigned long *pflag)
{
if (obj->ops->lookup_page) {
return (*obj->ops->lookup_page)(obj, off, p2align, physp, pflag);
}
return -ENXIO;
}
static inline void memobj_lock(struct memobj *obj)
{
ihk_mc_spinlock_lock_noirq(&obj->lock);