include/asm-ia64/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 8
  25
  26 struct rsvd_region {
  27         unsigned long start;    /* virtual address of beginning of element */
  28         unsigned long end;      /* virtual address of end of element + 1 */
  29 };
  30
  31 extern struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1];
  32 extern int num_rsvd_regions;
  33
  34 extern void find_memory (void);
  35 extern void reserve_memory (void);
  36 extern void find_initrd (void);
  37 extern int filter_rsvd_memory (unsigned long start, unsigned long end, void *arg);
  38 extern void efi_memmap_init(unsigned long *, unsigned long *);
  39 extern int find_max_min_low_pfn (unsigned long , unsigned long, void *);
  40
  41 extern unsigned long vmcore_find_descriptor_size(unsigned long address);
  42 extern int reserve_elfcorehdr(unsigned long *start, unsigned long *end);
  43
  44 /*
  45  * For rounding an address to the next IA64_GRANULE_SIZE or order
  46  */
  47 #define GRANULEROUNDDOWN(n)     ((n) & ~(IA64_GRANULE_SIZE-1))
  48 #define GRANULEROUNDUP(n)       (((n)+IA64_GRANULE_SIZE-1) & ~(IA64_GRANULE_SIZE-1))
  49 #define ORDERROUNDDOWN(n)       ((n) & ~((PAGE_SIZE<<MAX_ORDER)-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
  59 extern int register_active_ranges(u64 start, u64 end, void *arg);
  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
  69 static inline int vmemmap_find_next_valid_pfn(int node, int i)
  70 {
  71         return i + 1;
  72 }
  73 #endif
  74 #endif /* meminit_h */