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
  27 struct rsvd_region {
  28         u64 start;      /* virtual address of beginning of element */
  29         u64 end;        /* virtual address of end of element + 1 */
  30 };
  31
  32 extern struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1];
  33 extern int num_rsvd_regions;
  34
  35 extern void find_memory (void);
  36 extern void reserve_memory (void);
  37 extern void find_initrd (void);
  38 extern int filter_rsvd_memory (u64 start, u64 end, void *arg);
  39 extern int filter_memory (u64 start, u64 end, void *arg);
  40 extern unsigned long efi_memmap_init(u64 *s, u64 *e);
  41 extern int find_max_min_low_pfn (u64, u64, void *);
  42
  43 extern unsigned long vmcore_find_descriptor_size(unsigned long address);
  44 extern 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
  60 extern 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
  70 static inline int vmemmap_find_next_valid_pfn(int node, int i)
  71 {
  72         return i + 1;
  73 }
  74 #endif
  75 #endif /* meminit_h */