61 lines
2.3 KiB
C
61 lines
2.3 KiB
C
/*
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* Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999
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*/
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#ifndef _LINUX_BOOTMEM_H
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#define _LINUX_BOOTMEM_H
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#include <asm/pgtable.h>
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#include <asm/dma.h>
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#include <linux/cache.h>
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#include <linux/init.h>
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#include <linux/mmzone.h>
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/*
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* simple boot-time physical memory area allocator.
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*/
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extern unsigned long max_low_pfn;
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extern unsigned long min_low_pfn;
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extern unsigned long max_pfn;
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/*
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* node_bootmem_map is a map pointer - the bits represent all physical
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* memory pages (including holes) on the node.
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*/
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typedef struct bootmem_data {
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unsigned long node_boot_start;
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unsigned long node_low_pfn;
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void *node_bootmem_map;
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unsigned long last_offset;
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unsigned long last_pos;
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} bootmem_data_t;
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extern unsigned long __init bootmem_bootmap_pages (unsigned long);
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extern unsigned long __init init_bootmem (unsigned long addr, unsigned long memend);
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extern void __init reserve_bootmem (unsigned long addr, unsigned long size);
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extern void __init free_bootmem (unsigned long addr, unsigned long size);
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extern void * __init __alloc_bootmem (unsigned long size, unsigned long align, unsigned long goal);
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#define alloc_bootmem(x) \
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__alloc_bootmem((x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
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#define alloc_bootmem_low(x) \
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__alloc_bootmem((x), SMP_CACHE_BYTES, 0)
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#define alloc_bootmem_pages(x) \
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__alloc_bootmem((x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
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#define alloc_bootmem_low_pages(x) \
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__alloc_bootmem((x), PAGE_SIZE, 0)
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extern unsigned long __init free_all_bootmem (void);
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extern unsigned long __init init_bootmem_node (pg_data_t *pgdat, unsigned long freepfn, unsigned long startpfn, unsigned long endpfn);
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extern void __init reserve_bootmem_node (pg_data_t *pgdat, unsigned long physaddr, unsigned long size);
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extern void __init free_bootmem_node (pg_data_t *pgdat, unsigned long addr, unsigned long size);
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extern unsigned long __init free_all_bootmem_node (pg_data_t *pgdat);
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extern void * __init __alloc_bootmem_node (pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal);
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#define alloc_bootmem_node(pgdat, x) \
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__alloc_bootmem_node((pgdat), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
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#define alloc_bootmem_pages_node(pgdat, x) \
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__alloc_bootmem_node((pgdat), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
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#define alloc_bootmem_low_pages_node(pgdat, x) \
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__alloc_bootmem_node((pgdat), (x), PAGE_SIZE, 0)
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#endif /* _LINUX_BOOTMEM_H */
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