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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999 |
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| 3 | */ |
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| 4 | #ifndef _LINUX_BOOTMEM_H |
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| 5 | #define _LINUX_BOOTMEM_H |
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| 6 | |||
| 7 | #include <asm/pgtable.h> |
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| 8 | #include <asm/dma.h> |
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| 9 | #include <linux/cache.h> |
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| 10 | #include <linux/init.h> |
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| 11 | #include <linux/mmzone.h> |
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| 12 | |||
| 13 | /* |
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| 14 | * simple boot-time physical memory area allocator. |
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| 15 | */ |
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| 16 | |||
| 17 | extern unsigned long max_low_pfn; |
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| 18 | extern unsigned long min_low_pfn; |
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| 19 | |||
| 20 | /* |
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| 21 | * highest page |
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| 22 | */ |
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| 23 | extern unsigned long max_pfn; |
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| 24 | |||
| 25 | /* |
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| 26 | * node_bootmem_map is a map pointer - the bits represent all physical |
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| 27 | * memory pages (including holes) on the node. |
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| 28 | */ |
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| 29 | typedef struct bootmem_data { |
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| 30 | unsigned long node_boot_start; |
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| 31 | unsigned long node_low_pfn; |
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| 32 | void *node_bootmem_map; |
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| 33 | unsigned long last_offset; |
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| 34 | unsigned long last_pos; |
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| 35 | unsigned long last_success; /* Previous allocation point. To speed |
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| 36 | * up searching */ |
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| 37 | } bootmem_data_t; |
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| 38 | |||
| 39 | extern unsigned long __init bootmem_bootmap_pages (unsigned long); |
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| 40 | extern unsigned long __init init_bootmem (unsigned long addr, unsigned long memend); |
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| 41 | extern void __init free_bootmem (unsigned long addr, unsigned long size); |
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| 42 | extern void * __init __alloc_bootmem (unsigned long size, unsigned long align, unsigned long goal); |
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| 43 | #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE |
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| 44 | extern void __init reserve_bootmem (unsigned long addr, unsigned long size); |
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| 45 | #define alloc_bootmem(x) \ |
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| 46 | __alloc_bootmem((x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) |
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| 47 | #define alloc_bootmem_low(x) \ |
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| 48 | __alloc_bootmem((x), SMP_CACHE_BYTES, 0) |
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| 49 | #define alloc_bootmem_pages(x) \ |
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| 50 | __alloc_bootmem((x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) |
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| 51 | #define alloc_bootmem_low_pages(x) \ |
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| 52 | __alloc_bootmem((x), PAGE_SIZE, 0) |
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| 53 | #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */ |
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| 54 | extern unsigned long __init free_all_bootmem (void); |
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| 55 | |||
| 56 | extern unsigned long __init init_bootmem_node (pg_data_t *pgdat, unsigned long freepfn, unsigned long startpfn, unsigned long endpfn); |
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| 57 | extern void __init reserve_bootmem_node (pg_data_t *pgdat, unsigned long physaddr, unsigned long size); |
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| 58 | extern void __init free_bootmem_node (pg_data_t *pgdat, unsigned long addr, unsigned long size); |
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| 59 | extern unsigned long __init free_all_bootmem_node (pg_data_t *pgdat); |
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| 60 | extern void * __init __alloc_bootmem_node (pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal); |
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| 61 | #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE |
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| 62 | #define alloc_bootmem_node(pgdat, x) \ |
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| 63 | __alloc_bootmem_node((pgdat), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) |
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| 64 | #define alloc_bootmem_pages_node(pgdat, x) \ |
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| 65 | __alloc_bootmem_node((pgdat), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) |
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| 66 | #define alloc_bootmem_low_pages_node(pgdat, x) \ |
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| 67 | __alloc_bootmem_node((pgdat), (x), PAGE_SIZE, 0) |
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| 68 | #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */ |
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| 69 | |||
| 70 | #endif /* _LINUX_BOOTMEM_H */ |