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83d290c5 | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
4ed6552f KG |
2 | #ifndef _LINUX_LMB_H |
3 | #define _LINUX_LMB_H | |
4 | #ifdef __KERNEL__ | |
5 | ||
6 | #include <asm/types.h> | |
9cc2323f SG |
7 | #include <asm/u-boot.h> |
8 | ||
4ed6552f KG |
9 | /* |
10 | * Logical memory blocks. | |
11 | * | |
12 | * Copyright (C) 2001 Peter Bergner, IBM Corp. | |
4ed6552f KG |
13 | */ |
14 | ||
15 | #define MAX_LMB_REGIONS 8 | |
16 | ||
17 | struct lmb_property { | |
391fd93a BB |
18 | phys_addr_t base; |
19 | phys_size_t size; | |
4ed6552f KG |
20 | }; |
21 | ||
22 | struct lmb_region { | |
23 | unsigned long cnt; | |
391fd93a | 24 | phys_size_t size; |
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25 | struct lmb_property region[MAX_LMB_REGIONS+1]; |
26 | }; | |
27 | ||
28 | struct lmb { | |
29 | struct lmb_region memory; | |
30 | struct lmb_region reserved; | |
31 | }; | |
32 | ||
4ed6552f | 33 | extern void lmb_init(struct lmb *lmb); |
9cc2323f SG |
34 | extern void lmb_init_and_reserve(struct lmb *lmb, bd_t *bd, void *fdt_blob); |
35 | extern void lmb_init_and_reserve_range(struct lmb *lmb, phys_addr_t base, | |
36 | phys_size_t size, void *fdt_blob); | |
391fd93a BB |
37 | extern long lmb_add(struct lmb *lmb, phys_addr_t base, phys_size_t size); |
38 | extern long lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size); | |
39 | extern phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align); | |
40 | extern phys_addr_t lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align, | |
41 | phys_addr_t max_addr); | |
42 | extern phys_addr_t __lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align, | |
43 | phys_addr_t max_addr); | |
4cc8af80 SG |
44 | extern phys_addr_t lmb_alloc_addr(struct lmb *lmb, phys_addr_t base, |
45 | phys_size_t size); | |
65304aad | 46 | extern phys_size_t lmb_get_free_size(struct lmb *lmb, phys_addr_t addr); |
391fd93a | 47 | extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr); |
98874ff3 | 48 | extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size); |
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49 | |
50 | extern void lmb_dump_all(struct lmb *lmb); | |
51 | ||
391fd93a | 52 | static inline phys_size_t |
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53 | lmb_size_bytes(struct lmb_region *type, unsigned long region_nr) |
54 | { | |
55 | return type->region[region_nr].size; | |
56 | } | |
a16028da MF |
57 | |
58 | void board_lmb_reserve(struct lmb *lmb); | |
59 | void arch_lmb_reserve(struct lmb *lmb); | |
60 | ||
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61 | #endif /* __KERNEL__ */ |
62 | ||
63 | #endif /* _LINUX_LMB_H */ |