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- #ifndef _LINUX_VMALLOC_H
- #define _LINUX_VMALLOC_H
- #include <linux/spinlock.h>
- #include <asm/page.h> /* pgprot_t */
- struct vm_area_struct;
- /* bits in vm_struct->flags */
- #define VM_IOREMAP 0x00000001 /* ioremap() and friends */
- #define VM_ALLOC 0x00000002 /* vmalloc() */
- #define VM_MAP 0x00000004 /* vmap()ed pages */
- #define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */
- #define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */
- /* 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 {
- /* keep next,addr,size together to speedup lookups */
- struct vm_struct *next;
- void *addr;
- unsigned long size;
- unsigned long flags;
- struct page **pages;
- unsigned int nr_pages;
- unsigned long phys_addr;
- };
- /*
- * Highlevel APIs for driver use
- */
- extern void *vmalloc(unsigned long size);
- extern void *vmalloc_user(unsigned long size);
- extern void *vmalloc_node(unsigned long size, int node);
- extern void *vmalloc_exec(unsigned long size);
- extern void *vmalloc_32(unsigned long size);
- extern void *vmalloc_32_user(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);
- extern int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
- unsigned long pgoff);
-
- /*
- * 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 *get_vm_area_node(unsigned long size,
- unsigned long flags, int node,
- gfp_t gfp_mask);
- 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 */
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