LXR uboot/include/lmb.h

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2#ifndef _LINUX_LMB_H
   3#define _LINUX_LMB_H
   4#ifdef __KERNEL__
   5
   6#include <asm/types.h>
   7/*
   8 * Logical memory blocks.
   9 *
  10 * Copyright (C) 2001 Peter Bergner, IBM Corp.
  11 */
  12
  13#define MAX_LMB_REGIONS 8
  14
  15struct lmb_property {
  16        phys_addr_t base;
  17        phys_size_t size;
  18};
  19
  20struct lmb_region {
  21        unsigned long cnt;
  22        phys_size_t size;
  23        struct lmb_property region[MAX_LMB_REGIONS+1];
  24};
  25
  26struct lmb {
  27        struct lmb_region memory;
  28        struct lmb_region reserved;
  29};
  30
  31extern struct lmb lmb;
  32
  33extern void lmb_init(struct lmb *lmb);
  34extern long lmb_add(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  35extern long lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  36extern phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align);
  37extern phys_addr_t lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
  38                            phys_addr_t max_addr);
  39extern phys_addr_t __lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
  40                              phys_addr_t max_addr);
  41extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr);
  42extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  43
  44extern void lmb_dump_all(struct lmb *lmb);
  45
  46static inline phys_size_t
  47lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
  48{
  49        return type->region[region_nr].size;
  50}
  51
  52void board_lmb_reserve(struct lmb *lmb);
  53void arch_lmb_reserve(struct lmb *lmb);
  54
  55#endif /* __KERNEL__ */
  56
  57#endif /* _LINUX_LMB_H */
  58