|
|
|
|
#ifndef _LINUX_VMALLOC_H
|
|
|
|
|
#define _LINUX_VMALLOC_H
|
|
|
|
|
|
|
|
|
|
#include <linux/spinlock.h>
|
|
|
|
|
#include <asm/page.h> /* pgprot_t */
|
|
|
|
|
|
|
|
|
|
/* bits in vm_struct->flags */
|
|
|
|
|
#define VM_IOREMAP 0x00000001 /* ioremap() and friends */
|
|
|
|
|
#define VM_ALLOC 0x00000002 /* vmalloc() */
|
|
|
|
|
#define VM_MAP 0x00000004 /* vmap()ed pages */
|
|
|
|
|
/* bits [20..32] reserved for arch specific ioremap internals */
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Maximum alignment for ioremap() regions.
|
|
|
|
|
* Can be overriden by arch-specific value.
|
|
|
|
|
*/
|
|
|
|
|
#ifndef IOREMAP_MAX_ORDER
|
|
|
|
|
#define IOREMAP_MAX_ORDER (7 + PAGE_SHIFT) /* 128 pages */
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
struct vm_struct {
|
|
|
|
|
void *addr;
|
|
|
|
|
unsigned long size;
|
|
|
|
|
unsigned long flags;
|
|
|
|
|
struct page **pages;
|
|
|
|
|
unsigned int nr_pages;
|
|
|
|
|
unsigned long phys_addr;
|
|
|
|
|
struct vm_struct *next;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Highlevel APIs for driver use
|
|
|
|
|
*/
|
|
|
|
|
extern void *vmalloc(unsigned long size);
|
|
|
|
|
extern void *vmalloc_exec(unsigned long size);
|
|
|
|
|
extern void *vmalloc_32(unsigned long size);
|
|
|
|
|
extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
|
|
|
|
|
extern void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, pgprot_t prot);
|
|
|
|
|
extern void vfree(void *addr);
|
|
|
|
|
|
|
|
|
|
extern void *vmap(struct page **pages, unsigned int count,
|
|
|
|
|
unsigned long flags, pgprot_t prot);
|
|
|
|
|
extern void vunmap(void *addr);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Lowlevel-APIs (not for driver use!)
|
|
|
|
|
*/
|
|
|
|
|
extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
|
|
|
|
|
extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
|
|
|
|
|
unsigned long start, unsigned long end);
|
|
|
|
|
extern struct vm_struct *remove_vm_area(void *addr);
|
|
|
|
|
extern struct vm_struct *__remove_vm_area(void *addr);
|
|
|
|
|
extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
|
|
|
|
|
struct page ***pages);
|
|
|
|
|
extern void unmap_vm_area(struct vm_struct *area);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Internals. Dont't use..
|
|
|
|
|
*/
|
|
|
|
|
extern rwlock_t vmlist_lock;
|
|
|
|
|
extern struct vm_struct *vmlist;
|
|
|
|
|
|
|
|
|
|
#endif /* _LINUX_VMALLOC_H */
|
