arch/ppc/mm/mem_pieces.h

   1 /*
   2  *    Copyright (c) 1996 Paul Mackerras <paulus@cs.anu.edu.au>
   3  *      Changes to accommodate Power Macintoshes.
   4  *    Cort Dougan <cort@cs.nmt.edu>
   5  *      Rewrites.
   6  *    Grant Erickson <grant@lcse.umn.edu>
   7  *      General rework and split from mm/init.c.
   8  *
   9  *    Module name: mem_pieces.h
  10  *
  11  *    Description:
  12  *      Routines and data structures for manipulating and representing
  13  *      phyiscal memory extents (i.e. address/length pairs).
  14  *
  15  */
  16
  17 #ifndef __MEM_PIECES_H__
  18 #define __MEM_PIECES_H__
  19
  20 #include <asm/prom.h>
  21
  22 #ifdef __cplusplus
  23 extern "C" {
  24 #endif
  25
  26
  27 /* Type Definitions */
  28
  29 #define MEM_PIECES_MAX  32
  30
  31 struct mem_pieces {
  32     int n_regions;
  33     struct reg_property regions[MEM_PIECES_MAX];
  34 };
  35
  36 /* Function Prototypes */
  37
  38 extern void     *mem_pieces_find(unsigned int size, unsigned int align);
  39 extern void      mem_pieces_remove(struct mem_pieces *mp, unsigned int start,
  40                                    unsigned int size, int must_exist);
  41 extern void      mem_pieces_coalesce(struct mem_pieces *mp);
  42 extern void      mem_pieces_sort(struct mem_pieces *mp);
  43
  44 #ifdef __cplusplus
  45 }
  46 #endif
  47
  48 #endif /* __MEM_PIECES_H__ */