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1da177e4 LT |
1 | #ifndef _LINUX_VMALLOC_H |
2 | #define _LINUX_VMALLOC_H | |
3 | ||
4 | #include <linux/spinlock.h> | |
5 | #include <asm/page.h> /* pgprot_t */ | |
6 | ||
7 | /* bits in vm_struct->flags */ | |
8 | #define VM_IOREMAP 0x00000001 /* ioremap() and friends */ | |
9 | #define VM_ALLOC 0x00000002 /* vmalloc() */ | |
10 | #define VM_MAP 0x00000004 /* vmap()ed pages */ | |
11 | /* bits [20..32] reserved for arch specific ioremap internals */ | |
12 | ||
13 | struct vm_struct { | |
14 | void *addr; | |
15 | unsigned long size; | |
16 | unsigned long flags; | |
17 | struct page **pages; | |
18 | unsigned int nr_pages; | |
19 | unsigned long phys_addr; | |
20 | struct vm_struct *next; | |
21 | }; | |
22 | ||
23 | /* | |
24 | * Highlevel APIs for driver use | |
25 | */ | |
26 | extern void *vmalloc(unsigned long size); | |
27 | extern void *vmalloc_exec(unsigned long size); | |
28 | extern void *vmalloc_32(unsigned long size); | |
29 | extern void *__vmalloc(unsigned long size, unsigned int __nocast gfp_mask, pgprot_t prot); | |
30 | extern void *__vmalloc_area(struct vm_struct *area, unsigned int __nocast gfp_mask, pgprot_t prot); | |
31 | extern void vfree(void *addr); | |
32 | ||
33 | extern void *vmap(struct page **pages, unsigned int count, | |
34 | unsigned long flags, pgprot_t prot); | |
35 | extern void vunmap(void *addr); | |
36 | ||
37 | /* | |
38 | * Lowlevel-APIs (not for driver use!) | |
39 | */ | |
40 | extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags); | |
41 | extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags, | |
42 | unsigned long start, unsigned long end); | |
43 | extern struct vm_struct *remove_vm_area(void *addr); | |
44 | extern int map_vm_area(struct vm_struct *area, pgprot_t prot, | |
45 | struct page ***pages); | |
46 | extern void unmap_vm_area(struct vm_struct *area); | |
47 | ||
48 | /* | |
49 | * Internals. Dont't use.. | |
50 | */ | |
51 | extern rwlock_t vmlist_lock; | |
52 | extern struct vm_struct *vmlist; | |
53 | ||
54 | #endif /* _LINUX_VMALLOC_H */ |