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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef _LINUX_VMALLOC_H |
| 2 | #define _LINUX_VMALLOC_H |
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| 3 | |||
| 4 | #include <linux/spinlock.h> |
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| 5 | #include <asm/page.h> /* pgprot_t */ |
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| 6 | |||
| 7 | /* bits in vm_struct->flags */ |
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| 8 | #define VM_IOREMAP 0x00000001 /* ioremap() and friends */ |
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| 9 | #define VM_ALLOC 0x00000002 /* vmalloc() */ |
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| 10 | #define VM_MAP 0x00000004 /* vmap()ed pages */ |
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| 11 | |||
| 12 | struct vm_struct { |
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| 13 | void *addr; |
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| 14 | unsigned long size; |
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| 15 | unsigned long flags; |
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| 16 | struct page **pages; |
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| 17 | unsigned int nr_pages; |
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| 18 | unsigned long phys_addr; |
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| 19 | struct vm_struct *next; |
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| 20 | }; |
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| 21 | |||
| 22 | /* |
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| 23 | * Highlevel APIs for driver use |
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| 24 | */ |
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| 25 | extern void *vmalloc(unsigned long size); |
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| 26 | extern void *vmalloc_32(unsigned long size); |
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| 27 | extern void *__vmalloc(unsigned long size, int gfp_mask, pgprot_t prot); |
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| 28 | extern void vfree(void *addr); |
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| 29 | |||
| 30 | extern void *vmap(struct page **pages, unsigned int count, |
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| 31 | unsigned long flags, pgprot_t prot); |
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| 32 | extern void vunmap(void *addr); |
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| 33 | |||
| 34 | /* |
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| 35 | * Lowlevel-APIs (not for driver use!) |
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| 36 | */ |
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| 37 | extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags); |
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| 38 | extern struct vm_struct *remove_vm_area(void *addr); |
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| 39 | extern int map_vm_area(struct vm_struct *area, pgprot_t prot, |
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| 40 | struct page ***pages); |
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| 41 | extern void unmap_vm_area(struct vm_struct *area); |
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| 42 | |||
| 43 | /* |
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| 44 | * Internals. Dont't use.. |
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| 45 | */ |
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| 46 | extern rwlock_t vmlist_lock; |
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| 47 | extern struct vm_struct *vmlist; |
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| 48 | |||
| 49 | #endif /* _LINUX_VMALLOC_H */ |