| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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 */ |