| /* |
| * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999 |
| */ |
| #ifndef _LINUX_BOOTMEM_H |
| #define _LINUX_BOOTMEM_H |
| |
| #include <asm/pgtable.h> |
| #include <asm/dma.h> |
| #include <linux/cache.h> |
| #include <linux/init.h> |
| #include <linux/mmzone.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; |
| |
| /* |
| * 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; |
| } bootmem_data_t; |
| |
| extern unsigned long __init bootmem_bootmap_pages (unsigned long); |
| extern unsigned long __init init_bootmem (unsigned long addr, unsigned long memend); |
| extern void __init reserve_bootmem (unsigned long addr, unsigned long size); |
| extern void __init free_bootmem (unsigned long addr, unsigned long size); |
| extern void * __init __alloc_bootmem (unsigned long size, unsigned long align, unsigned long goal); |
| #define alloc_bootmem(x) \ |
| __alloc_bootmem((x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) |
| #define alloc_bootmem_low(x) \ |
| __alloc_bootmem((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((x), PAGE_SIZE, 0) |
| extern unsigned long __init free_all_bootmem (void); |
| |
| extern unsigned long __init init_bootmem_node (pg_data_t *pgdat, unsigned long freepfn, unsigned long startpfn, unsigned long endpfn); |
| extern void __init reserve_bootmem_node (pg_data_t *pgdat, unsigned long physaddr, unsigned long size); |
| extern void __init free_bootmem_node (pg_data_t *pgdat, unsigned long addr, unsigned long size); |
| extern unsigned long __init free_all_bootmem_node (pg_data_t *pgdat); |
| extern void * __init __alloc_bootmem_node (pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal); |
| #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_node((pgdat), (x), PAGE_SIZE, 0) |
| |
| #endif /* _LINUX_BOOTMEM_H */ |