LXR uboot/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 * SPDX-License-Identifier:     GPL-2.0+
  12 */
  13
  14#define MAX_LMB_REGIONS 8
  15
  16struct lmb_property {
  17        phys_addr_t base;
  18        phys_size_t size;
  19};
  20
  21struct lmb_region {
  22        unsigned long cnt;
  23        phys_size_t size;
  24        struct lmb_property region[MAX_LMB_REGIONS+1];
  25};
  26
  27struct lmb {
  28        struct lmb_region memory;
  29        struct lmb_region reserved;
  30};
  31
  32extern struct lmb lmb;
  33
  34extern void lmb_init(struct lmb *lmb);
  35extern long lmb_add(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  36extern long lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  37extern phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align);
  38extern phys_addr_t lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
  39                            phys_addr_t max_addr);
  40extern phys_addr_t __lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
  41                              phys_addr_t max_addr);
  42extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr);
  43extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  44
  45extern void lmb_dump_all(struct lmb *lmb);
  46
  47static inline phys_size_t
  48lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
  49{
  50        return type->region[region_nr].size;
  51}
  52
  53void board_lmb_reserve(struct lmb *lmb);
  54void arch_lmb_reserve(struct lmb *lmb);
  55
  56#endif /* __KERNEL__ */
  57
  58#endif /* _LINUX_LMB_H */
  59