ALSA: usb-audio: add support for Akai MPD16

[safe/jmp/linux-2.6] / include / linux / vmalloc.h

diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 6409d9c..227c2a5 100644 (file)
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -2,54 +2,123 @@
 #define _LINUX_VMALLOC_H
 
 #include <linux/spinlock.h>
+#include <linux/init.h>
 #include <asm/page.h>          /* pgprot_t */
 
-/* bits in vm_struct->flags */
+struct vm_area_struct;         /* vma defining user mapping in mm_types.h */
+
+/* bits in flags of vmalloc's vm_struct below */
 #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 {
+       struct vm_struct        *next;
        void                    *addr;
        unsigned long           size;
        unsigned long           flags;
        struct page             **pages;
        unsigned int            nr_pages;
        unsigned long           phys_addr;
-       struct vm_struct        *next;
+       void                    *caller;
 };
 
 /*
  *     Highlevel APIs for driver use
  */
+extern void vm_unmap_ram(const void *mem, unsigned int count);
+extern void *vm_map_ram(struct page **pages, unsigned int count,
+                               int node, pgprot_t prot);
+extern void vm_unmap_aliases(void);
+
+#ifdef CONFIG_MMU
+extern void __init vmalloc_init(void);
+#else
+static inline void vmalloc_init(void)
+{
+}
+#endif
+
 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(unsigned long size, unsigned int __nocast gfp_mask, pgprot_t prot);
-extern void *__vmalloc_area(struct vm_struct *area, unsigned int __nocast gfp_mask, pgprot_t prot);
-extern void vfree(void *addr);
+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(const void *addr);
 
 extern void *vmap(struct page **pages, unsigned int count,
                        unsigned long flags, pgprot_t prot);
-extern void vunmap(void *addr);
+extern void vunmap(const void *addr);
+
+extern int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
+                                                       unsigned long pgoff);
+void vmalloc_sync_all(void);
  
 /*
  *     Lowlevel-APIs (not for driver use!)
  */
+
+static inline size_t get_vm_area_size(const struct vm_struct *area)
+{
+       /* return actual size without guard page */
+       return area->size - PAGE_SIZE;
+}
+
 extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
+extern struct vm_struct *get_vm_area_caller(unsigned long size,
+                                       unsigned long flags, void *caller);
 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 struct vm_struct *__get_vm_area_caller(unsigned long size,
+                                       unsigned long flags,
+                                       unsigned long start, unsigned long end,
+                                       void *caller);
+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(const 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);
+extern int map_kernel_range_noflush(unsigned long start, unsigned long size,
+                                   pgprot_t prot, struct page **pages);
+extern void unmap_kernel_range_noflush(unsigned long addr, unsigned long size);
+extern void unmap_kernel_range(unsigned long addr, unsigned long size);
+
+/* Allocate/destroy a 'vmalloc' VM area. */
+extern struct vm_struct *alloc_vm_area(size_t size);
+extern void free_vm_area(struct vm_struct *area);
+
+/* for /dev/kmem */
+extern long vread(char *buf, char *addr, unsigned long count);
+extern long vwrite(char *buf, char *addr, unsigned long count);
 
 /*
  *     Internals.  Dont't use..
  */
 extern rwlock_t vmlist_lock;
 extern struct vm_struct *vmlist;
+extern __init void vm_area_register_early(struct vm_struct *vm, size_t align);
+
+struct vm_struct **pcpu_get_vm_areas(const unsigned long *offsets,
+                                    const size_t *sizes, int nr_vms,
+                                    size_t align, gfp_t gfp_mask);
+
+void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms);
 
 #endif /* _LINUX_VMALLOC_H */