LXR linux/arch/ia64/include/asm/meminit.h

   1#ifndef meminit_h
   2#define meminit_h
   3
   4/*
   5 * This file is subject to the terms and conditions of the GNU General Public
   6 * License.  See the file "COPYING" in the main directory of this archive
   7 * for more details.
   8 */
   9
  10
  11/*
  12 * Entries defined so far:
  13 *      - boot param structure itself
  14 *      - memory map
  15 *      - initrd (optional)
  16 *      - command line string
  17 *      - kernel code & data
  18 *      - crash dumping code reserved region
  19 *      - Kernel memory map built from EFI memory map
  20 *      - ELF core header
  21 *
  22 * More could be added if necessary
  23 */
  24#define IA64_MAX_RSVD_REGIONS 9
  25
  26struct rsvd_region {
  27        u64 start;      /* virtual address of beginning of element */
  28        u64 end;        /* virtual address of end of element + 1 */
  29};
  30
  31extern struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1];
  32extern int num_rsvd_regions;
  33
  34extern void find_memory (void);
  35extern void reserve_memory (void);
  36extern void find_initrd (void);
  37extern int filter_rsvd_memory (u64 start, u64 end, void *arg);
  38extern int filter_memory (u64 start, u64 end, void *arg);
  39extern unsigned long efi_memmap_init(u64 *s, u64 *e);
  40extern int find_max_min_low_pfn (u64, u64, void *);
  41
  42extern unsigned long vmcore_find_descriptor_size(unsigned long address);
  43extern int reserve_elfcorehdr(u64 *start, u64 *end);
  44
  45/*
  46 * For rounding an address to the next IA64_GRANULE_SIZE or order
  47 */
  48#define GRANULEROUNDDOWN(n)     ((n) & ~(IA64_GRANULE_SIZE-1))
  49#define GRANULEROUNDUP(n)       (((n)+IA64_GRANULE_SIZE-1) & ~(IA64_GRANULE_SIZE-1))
  50
  51#ifdef CONFIG_NUMA
  52  extern void call_pernode_memory (unsigned long start, unsigned long len, void *func);
  53#else
  54# define call_pernode_memory(start, len, func)  (*func)(start, len, 0)
  55#endif
  56
  57#define IGNORE_PFN0     1       /* XXX fix me: ignore pfn 0 until TLB miss handler is updated... */
  58
  59extern int register_active_ranges(u64 start, u64 len, int nid);
  60
  61#ifdef CONFIG_VIRTUAL_MEM_MAP
  62# define LARGE_GAP      0x40000000 /* Use virtual mem map if hole is > than this */
  63  extern unsigned long VMALLOC_END;
  64  extern struct page *vmem_map;
  65  extern int find_largest_hole(u64 start, u64 end, void *arg);
  66  extern int create_mem_map_page_table(u64 start, u64 end, void *arg);
  67  extern int vmemmap_find_next_valid_pfn(int, int);
  68#else
  69static inline int vmemmap_find_next_valid_pfn(int node, int i)
  70{
  71        return i + 1;
  72}
  73#endif
  74#endif /* meminit_h */
  75