projects / people / ms / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| fd195c49 DS |
13 | /* |
| 14 | * Maximum alignment for ioremap() regions. | |
| 15 | * Can be overriden by arch-specific value. | |
| 16 | */ | |
| 17 | #ifndef IOREMAP_MAX_ORDER | |
| 18 | #define IOREMAP_MAX_ORDER (7 + PAGE_SHIFT) /* 128 pages */ | |
| 19 | #endif | |
| 20 | ||
| 1da177e4 LT |
21 | struct vm_struct { |
| 22 | void *addr; | |
| 23 | unsigned long size; | |
| 24 | unsigned long flags; | |
| 25 | struct page **pages; | |
| 26 | unsigned int nr_pages; | |
| 27 | unsigned long phys_addr; | |
| 28 | struct vm_struct *next; | |
| 29 | }; | |
| 30 | ||
| 31 | /* | |
| 32 | * Highlevel APIs for driver use | |
| 33 | */ | |
| 34 | extern void *vmalloc(unsigned long size); | |
| 35 | extern void *vmalloc_exec(unsigned long size); | |
| 36 | extern void *vmalloc_32(unsigned long size); | |
| 37 | extern void *__vmalloc(unsigned long size, unsigned int __nocast gfp_mask, pgprot_t prot); | |
| 38 | extern void *__vmalloc_area(struct vm_struct *area, unsigned int __nocast gfp_mask, pgprot_t prot); | |
| 39 | extern void vfree(void *addr); | |
| 40 | ||
| 41 | extern void *vmap(struct page **pages, unsigned int count, | |
| 42 | unsigned long flags, pgprot_t prot); | |
| 43 | extern void vunmap(void *addr); | |
| 44 | ||
| 45 | /* | |
| 46 | * Lowlevel-APIs (not for driver use!) | |
| 47 | */ | |
| 48 | extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags); | |
| 49 | extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags, | |
| 50 | unsigned long start, unsigned long end); | |
| 51 | extern struct vm_struct *remove_vm_area(void *addr); | |
| 7856dfeb | 52 | extern struct vm_struct *__remove_vm_area(void *addr); |
| 1da177e4 LT |
53 | extern int map_vm_area(struct vm_struct *area, pgprot_t prot, |
| 54 | struct page ***pages); | |
| 55 | extern void unmap_vm_area(struct vm_struct *area); | |
| 56 | ||
| 57 | /* | |
| 58 | * Internals. Dont't use.. | |
| 59 | */ | |
| 60 | extern rwlock_t vmlist_lock; | |
| 61 | extern struct vm_struct *vmlist; | |
| 62 | ||
| 63 | #endif /* _LINUX_VMALLOC_H */ |