/* SPDX-License-Identifier: GPL-2.0+ */

  #ifndef _LINUX_LMB_H
  #define _LINUX_LMB_H
  #ifdef __KERNEL__
  
  #include <asm/types.h>

  #include <asm/u-boot.h>

  /*
   * Logical memory blocks.
   *
   * Copyright (C) 2001 Peter Bergner, IBM Corp.

   */
  
  #define MAX_LMB_REGIONS 8
  
  struct lmb_property {

  	phys_addr_t base;
  	phys_size_t size;

  };
  
  struct lmb_region {
  	unsigned long cnt;

  	phys_size_t size;

  	struct lmb_property region[MAX_LMB_REGIONS+1];
  };
  
  struct lmb {
  	struct lmb_region memory;
  	struct lmb_region reserved;
  };

  extern void lmb_init(struct lmb *lmb);

  extern void lmb_init_and_reserve(struct lmb *lmb, bd_t *bd, void *fdt_blob);
  extern void lmb_init_and_reserve_range(struct lmb *lmb, phys_addr_t base,
  				       phys_size_t size, void *fdt_blob);

  extern long lmb_add(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  extern long lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size);
  extern phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align);
  extern phys_addr_t lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
  			    phys_addr_t max_addr);
  extern phys_addr_t __lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
  			      phys_addr_t max_addr);

  extern phys_addr_t lmb_alloc_addr(struct lmb *lmb, phys_addr_t base,
  				  phys_size_t size);

  extern phys_size_t lmb_get_free_size(struct lmb *lmb, phys_addr_t addr);

  extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr);

  extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size);

  
  extern void lmb_dump_all(struct lmb *lmb);

  static inline phys_size_t

  lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
  {
  	return type->region[region_nr].size;
  }

  
  void board_lmb_reserve(struct lmb *lmb);
  void arch_lmb_reserve(struct lmb *lmb);

  #endif /* __KERNEL__ */
  
  #endif /* _LINUX_LMB_H */