1 #ifndef _LINUX_VMALLOC_H
2 #define _LINUX_VMALLOC_H
4 #include <linux/spinlock.h>
5 #include <asm/page.h> /* pgprot_t */
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 */
14 * Maximum alignment for ioremap() regions.
15 * Can be overriden by arch-specific value.
17 #ifndef IOREMAP_MAX_ORDER
18 #define IOREMAP_MAX_ORDER (7 + PAGE_SHIFT) /* 128 pages */
26 unsigned int nr_pages;
27 unsigned long phys_addr;
28 struct vm_struct *next;
32 * Highlevel APIs for driver use
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);
41 extern void *vmap(struct page **pages, unsigned int count,
42 unsigned long flags, pgprot_t prot);
43 extern void vunmap(void *addr);
46 * Lowlevel-APIs (not for driver use!)
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);
52 extern struct vm_struct *__remove_vm_area(void *addr);
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);
58 * Internals. Dont't use..
60 extern rwlock_t vmlist_lock;
61 extern struct vm_struct *vmlist;
63 #endif /* _LINUX_VMALLOC_H */