projects / mirror_ubuntu-artful-kernel.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 | ||
| 83342314 NP |
7 | struct vm_area_struct; |
| 8 | ||
| 1da177e4 LT |
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 */ | |
| 83342314 | 13 | #define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */ |
| 8757d5fa | 14 | #define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */ |
| 1da177e4 LT |
15 | /* bits [20..32] reserved for arch specific ioremap internals */ |
| 16 | ||
| fd195c49 DS |
17 | /* |
| 18 | * Maximum alignment for ioremap() regions. | |
| 19 | * Can be overriden by arch-specific value. | |
| 20 | */ | |
| 21 | #ifndef IOREMAP_MAX_ORDER | |
| 22 | #define IOREMAP_MAX_ORDER (7 + PAGE_SHIFT) /* 128 pages */ | |
| 23 | #endif | |
| 24 | ||
| 1da177e4 LT |
25 | struct vm_struct { |
| 26 | void *addr; | |
| 27 | unsigned long size; | |
| 28 | unsigned long flags; | |
| 29 | struct page **pages; | |
| 30 | unsigned int nr_pages; | |
| 31 | unsigned long phys_addr; | |
| 32 | struct vm_struct *next; | |
| 33 | }; | |
| 34 | ||
| 35 | /* | |
| 36 | * Highlevel APIs for driver use | |
| 37 | */ | |
| 38 | extern void *vmalloc(unsigned long size); | |
| 83342314 | 39 | extern void *vmalloc_user(unsigned long size); |
| 930fc45a | 40 | extern void *vmalloc_node(unsigned long size, int node); |
| 1da177e4 LT |
41 | extern void *vmalloc_exec(unsigned long size); |
| 42 | extern void *vmalloc_32(unsigned long size); | |
| 83342314 | 43 | extern void *vmalloc_32_user(unsigned long size); |
| dd0fc66f | 44 | extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot); |
| 930fc45a CL |
45 | extern void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, |
| 46 | pgprot_t prot); | |
| 1da177e4 LT |
47 | extern void vfree(void *addr); |
| 48 | ||
| 49 | extern void *vmap(struct page **pages, unsigned int count, | |
| 50 | unsigned long flags, pgprot_t prot); | |
| 51 | extern void vunmap(void *addr); | |
| 83342314 NP |
52 | |
| 53 | extern int remap_vmalloc_range(struct vm_area_struct *vma, void *addr, | |
| 54 | unsigned long pgoff); | |
| 1da177e4 LT |
55 | |
| 56 | /* | |
| 57 | * Lowlevel-APIs (not for driver use!) | |
| 58 | */ | |
| 59 | extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags); | |
| 60 | extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags, | |
| 61 | unsigned long start, unsigned long end); | |
| 930fc45a CL |
62 | extern struct vm_struct *get_vm_area_node(unsigned long size, |
| 63 | unsigned long flags, int node); | |
| 1da177e4 LT |
64 | extern struct vm_struct *remove_vm_area(void *addr); |
| 65 | extern int map_vm_area(struct vm_struct *area, pgprot_t prot, | |
| 66 | struct page ***pages); | |
| 67 | extern void unmap_vm_area(struct vm_struct *area); | |
| 68 | ||
| 69 | /* | |
| 70 | * Internals. Dont't use.. | |
| 71 | */ | |
| 72 | extern rwlock_t vmlist_lock; | |
| 73 | extern struct vm_struct *vmlist; | |
| 74 | ||
| 75 | #endif /* _LINUX_VMALLOC_H */ |