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/*

 * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999

 */

#ifndef _LINUX_BOOTMEM_H

#define _LINUX_BOOTMEM_H

#include <linux/mmzone.h>

#include <asm/dma.h>

/*

 *  simple boot-time physical memory area allocator.

 */

extern unsigned long max_low_pfn;

extern unsigned long min_low_pfn;

/*

 * highest page

 */

extern unsigned long max_pfn;

#ifdef CONFIG_CRASH_DUMP

extern unsigned long saved_max_pfn;

#endif

/*

 * node_bootmem_map is a map pointer - the bits represent all physical

 * memory pages (including holes) on the node.

 */

typedef struct bootmem_data {

        unsigned long node_boot_start;

        unsigned long node_low_pfn;

        void *node_bootmem_map;

        unsigned long last_offset;

        unsigned long last_pos;

        unsigned long last_success;     /* Previous allocation point.  To speed

                                         * up searching */

        struct list_head list;

} bootmem_data_t;

extern unsigned long bootmem_bootmap_pages(unsigned long);

extern unsigned long init_bootmem(unsigned long addr, unsigned long memend);

extern void free_bootmem(unsigned long addr, unsigned long size);

extern void *__alloc_bootmem(unsigned long size,

                             unsigned long align,

                             unsigned long goal);

extern void *__alloc_bootmem_nopanic(unsigned long size,

                                     unsigned long align,

                                     unsigned long goal);

extern void *__alloc_bootmem_low(unsigned long size,

                                 unsigned long align,

                                 unsigned long goal);

extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,

                                      unsigned long size,

                                      unsigned long align,

                                      unsigned long goal);

extern void *__alloc_bootmem_core(struct bootmem_data *bdata,

                                  unsigned long size,

                                  unsigned long align,

                                  unsigned long goal,

                                  unsigned long limit);

#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE

extern void reserve_bootmem(unsigned long addr, unsigned long size);

#define alloc_bootmem(x) \

        __alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))

#define alloc_bootmem_low(x) \

        __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0)

#define alloc_bootmem_pages(x) \

        __alloc_bootmem(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))

#define alloc_bootmem_low_pages(x) \

        __alloc_bootmem_low(x, PAGE_SIZE, 0)

#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */

extern unsigned long free_all_bootmem(void);

extern unsigned long free_all_bootmem_node(pg_data_t *pgdat);

extern void *__alloc_bootmem_node(pg_data_t *pgdat,

                                  unsigned long size,

                                  unsigned long align,

                                  unsigned long goal);

extern unsigned long init_bootmem_node(pg_data_t *pgdat,

                                       unsigned long freepfn,

                                       unsigned long startpfn,

                                       unsigned long endpfn);

extern void reserve_bootmem_node(pg_data_t *pgdat,

                                 unsigned long physaddr,

                                 unsigned long size);

extern void free_bootmem_node(pg_data_t *pgdat,

                              unsigned long addr,

                              unsigned long size);

#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE

#define alloc_bootmem_node(pgdat, x) \

        __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))

#define alloc_bootmem_pages_node(pgdat, x) \

        __alloc_bootmem_node(pgdat, x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))

#define alloc_bootmem_low_pages_node(pgdat, x) \

        __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0)

#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */

#ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP

extern void *alloc_remap(int nid, unsigned long size);

#else

static inline void *alloc_remap(int nid, unsigned long size)

{

        return NULL;

}

#endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */

extern unsigned long __meminitdata nr_kernel_pages;

extern unsigned long __meminitdata nr_all_pages;

extern void *alloc_large_system_hash(const char *tablename,

                                     unsigned long bucketsize,

                                     unsigned long numentries,

                                     int scale,

                                     int flags,

                                     unsigned int *_hash_shift,

                                     unsigned int *_hash_mask,

                                     unsigned long limit);

#define HASH_EARLY      0x00000001      /* Allocating during early boot? */

/* Only NUMA needs hash distribution.

 * IA64 and x86_64 have sufficient vmalloc space.

 */

#if defined(CONFIG_NUMA) && (defined(CONFIG_IA64) || defined(CONFIG_X86_64))

#define HASHDIST_DEFAULT 1

#else

#define HASHDIST_DEFAULT 0

#endif

extern int hashdist;            /* Distribute hashes across NUMA nodes? */

#endif /* _LINUX_BOOTMEM_H */