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 *      - xen start info if CONFIG_XEN
  22 *
  23 * More could be added if necessary
  24 */
  25#define IA64_MAX_RSVD_REGIONS 9
  26
  27struct rsvd_region {
  28        u64 start;      /* virtual address of beginning of element */
  29        u64 end;        /* virtual address of end of element + 1 */
  30};
  31
  32extern struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1];
  33extern int num_rsvd_regions;
  34
  35extern void find_memory (void);
  36extern void reserve_memory (void);
  37extern void find_initrd (void);
  38extern int filter_rsvd_memory (u64 start, u64 end, void *arg);
  39extern int filter_memory (u64 start, u64 end, void *arg);
  40extern unsigned long efi_memmap_init(u64 *s, u64 *e);
  41extern int find_max_min_low_pfn (u64, u64, void *);
  42
  43extern unsigned long vmcore_find_descriptor_size(unsigned long address);
  44extern int reserve_elfcorehdr(u64 *start, u64 *end);
  45
  46/*
  47 * For rounding an address to the next IA64_GRANULE_SIZE or order
  48 */
  49#define GRANULEROUNDDOWN(n)     ((n) & ~(IA64_GRANULE_SIZE-1))
  50#define GRANULEROUNDUP(n)       (((n)+IA64_GRANULE_SIZE-1) & ~(IA64_GRANULE_SIZE-1))
  51
  52#ifdef CONFIG_NUMA
  53  extern void call_pernode_memory (unsigned long start, unsigned long len, void *func);
  54#else
  55# define call_pernode_memory(start, len, func)  (*func)(start, len, 0)
  56#endif
  57
  58#define IGNORE_PFN0     1       /* XXX fix me: ignore pfn 0 until TLB miss handler is updated... */
  59
  60extern int register_active_ranges(u64 start, u64 len, int nid);
  61
  62#ifdef CONFIG_VIRTUAL_MEM_MAP
  63# define LARGE_GAP      0x40000000 /* Use virtual mem map if hole is > than this */
  64  extern unsigned long VMALLOC_END;
  65  extern struct page *vmem_map;
  66  extern int find_largest_hole(u64 start, u64 end, void *arg);
  67  extern int create_mem_map_page_table(u64 start, u64 end, void *arg);
  68  extern int vmemmap_find_next_valid_pfn(int, int);
  69#else
  70static inline int vmemmap_find_next_valid_pfn(int node, int i)
  71{
  72        return i + 1;
  73}
  74#endif
  75#endif /* meminit_h */
  76