include/lmb.h

   1 #ifndef _LINUX_LMB_H
   2 #define _LINUX_LMB_H
   3 #ifdef __KERNEL__
   4
   5 #include <asm/types.h>
   6 /*
   7  * Logical memory blocks.
   8  *
   9  * Copyright (C) 2001 Peter Bergner, IBM Corp.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version
  14  * 2 of the License, or (at your option) any later version.
  15  */
  16
  17 #define MAX_LMB_REGIONS 8
  18
  19 struct lmb_property {
  20         ulong base;
  21         ulong size;
  22 };
  23
  24 struct lmb_region {
  25         unsigned long cnt;
  26         ulong size;
  27         struct lmb_property region[MAX_LMB_REGIONS+1];
  28 };
  29
  30 struct lmb {
  31         struct lmb_region memory;
  32         struct lmb_region reserved;
  33 };
  34
  35 extern struct lmb lmb;
  36
  37 extern void lmb_init(struct lmb *lmb);
  38 extern long lmb_add(struct lmb *lmb, ulong base, ulong size);
  39 extern long lmb_reserve(struct lmb *lmb, ulong base, ulong size);
  40 extern ulong lmb_alloc(struct lmb *lmb, ulong size, ulong align);
  41 extern ulong lmb_alloc_base(struct lmb *lmb, ulong size, ulong align, ulong max_addr);
  42 extern ulong __lmb_alloc_base(struct lmb *lmb, ulong size, ulong align, ulong max_addr);
  43 extern int lmb_is_reserved(struct lmb *lmb, ulong addr);
  44
  45 extern void lmb_dump_all(struct lmb *lmb);
  46
  47 static inline ulong
  48 lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
  49 {
  50         return type->region[region_nr].size;
  51 }
  52 #endif /* __KERNEL__ */
  53
  54 #endif /* _LINUX_LMB_H */