1 #ifndef _LINUX_VMALLOC_H
2 #define _LINUX_VMALLOC_H
4 #include <linux/spinlock.h>
5 #include <asm/page.h> /* pgprot_t */
9 /* bits in vm_struct->flags */
10 #define VM_IOREMAP 0x00000001 /* ioremap() and friends */
11 #define VM_ALLOC 0x00000002 /* vmalloc() */
12 #define VM_MAP 0x00000004 /* vmap()ed pages */
13 #define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */
14 #define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */
15 /* bits [20..32] reserved for arch specific ioremap internals */
18 * Maximum alignment for ioremap() regions.
19 * Can be overriden by arch-specific value.
21 #ifndef IOREMAP_MAX_ORDER
22 #define IOREMAP_MAX_ORDER (7 + PAGE_SHIFT) /* 128 pages */
26 /* keep next,addr,size together to speedup lookups */
27 struct vm_struct
*next
;
32 unsigned int nr_pages
;
33 unsigned long phys_addr
;
37 * Highlevel APIs for driver use
39 extern void *vmalloc(unsigned long size
);
40 extern void *vmalloc_user(unsigned long size
);
41 extern void *vmalloc_node(unsigned long size
, int node
);
42 extern void *vmalloc_exec(unsigned long size
);
43 extern void *vmalloc_32(unsigned long size
);
44 extern void *vmalloc_32_user(unsigned long size
);
45 extern void *__vmalloc(unsigned long size
, gfp_t gfp_mask
, pgprot_t prot
);
46 extern void *__vmalloc_area(struct vm_struct
*area
, gfp_t gfp_mask
,
48 extern void vfree(void *addr
);
50 extern void *vmap(struct page
**pages
, unsigned int count
,
51 unsigned long flags
, pgprot_t prot
);
52 extern void vunmap(void *addr
);
54 extern int remap_vmalloc_range(struct vm_area_struct
*vma
, void *addr
,
58 * Lowlevel-APIs (not for driver use!)
60 extern struct vm_struct
*get_vm_area(unsigned long size
, unsigned long flags
);
61 extern struct vm_struct
*__get_vm_area(unsigned long size
, unsigned long flags
,
62 unsigned long start
, unsigned long end
);
63 extern struct vm_struct
*get_vm_area_node(unsigned long size
,
64 unsigned long flags
, int node
,
66 extern struct vm_struct
*remove_vm_area(void *addr
);
67 extern int map_vm_area(struct vm_struct
*area
, pgprot_t prot
,
68 struct page
***pages
);
69 extern void unmap_vm_area(struct vm_struct
*area
);
72 * Internals. Dont't use..
74 extern rwlock_t vmlist_lock
;
75 extern struct vm_struct
*vmlist
;
77 #endif /* _LINUX_VMALLOC_H */
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