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#include <asm/u-boot.h>
   8
   9/*
  10 * Logical memory blocks.
  11 *
  12 * Copyright (C) 2001 Peter Bergner, IBM Corp.
  13 */
  14
  15#define MAX_LMB_REGIONS 8
  16
  17struct lmb_property {
  18        phys_addr_t base;
  19        phys_size_t size;
  20};
  21
  22struct lmb_region {
  23        unsigned long cnt;
  24        phys_size_t size;
  25        struct lmb_property region[MAX_LMB_REGIONS+1];
  26};
  27
  28struct lmb {
  29        struct lmb_region memory;
  30        struct lmb_region reserved;
  31};
  32
  33extern void lmb_init(struct lmb *lmb);
  34extern void lmb_init_and_reserve(struct lmb *lmb, bd_t *bd, void *fdt_blob);
  35extern void lmb_init_and_reserve_range(struct lmb *lmb, phys_addr_t base,
  36                                       phys_size_t size, void *fdt_blob);
  37extern long lmb_add(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  38extern long lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  39extern phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align);
  40extern phys_addr_t lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
  41                            phys_addr_t max_addr);
  42extern phys_addr_t __lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
  43                              phys_addr_t max_addr);
  44extern phys_addr_t lmb_alloc_addr(struct lmb *lmb, phys_addr_t base,
  45                                  phys_size_t size);
  46extern phys_size_t lmb_get_free_size(struct lmb *lmb, phys_addr_t addr);
  47extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr);
  48extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  49
  50extern void lmb_dump_all(struct lmb *lmb);
  51
  52static inline phys_size_t
  53lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
  54{
  55        return type->region[region_nr].size;
  56}
  57
  58void board_lmb_reserve(struct lmb *lmb);
  59void arch_lmb_reserve(struct lmb *lmb);
  60
  61#endif /* __KERNEL__ */
  62
  63#endif /* _LINUX_LMB_H */
  64