| /* SPDX-License-Identifier: GPL-2.0+ */ |
| #ifndef _LINUX_LMB_H |
| #define _LINUX_LMB_H |
| #ifdef __KERNEL__ |
| |
| #include <asm/types.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 struct lmb lmb; |
| |
| extern void lmb_init(struct lmb *lmb); |
| extern void lmb_init_and_reserve(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 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); |
| |
| phys_addr_t lmb_alloc_addr(struct lmb *lmb, phys_addr_t base, phys_size_t size); |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif /* _LINUX_LMB_H */ |