lmb.h
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#ifndef _LINUX_LMB_H
#define _LINUX_LMB_H
#ifdef __KERNEL__
#include <asm/types.h>
/*
* Logical memory blocks.
*
* Copyright (C) 2001 Peter Bergner, IBM Corp.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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 struct lmb lmb;
extern void lmb_init(struct lmb *lmb);
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 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 */