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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> | |
7 | /* | |
8 | * Logical memory blocks. | |
9 | * | |
10 | * Copyright (C) 2001 Peter Bergner, IBM Corp. | |
4ed6552f KG |
11 | */ |
12 | ||
13 | #define MAX_LMB_REGIONS 8 | |
14 | ||
15 | struct lmb_property { | |
391fd93a BB |
16 | phys_addr_t base; |
17 | phys_size_t size; | |
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18 | }; |
19 | ||
20 | struct lmb_region { | |
21 | unsigned long cnt; | |
391fd93a | 22 | phys_size_t size; |
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23 | struct lmb_property region[MAX_LMB_REGIONS+1]; |
24 | }; | |
25 | ||
26 | struct lmb { | |
27 | struct lmb_region memory; | |
28 | struct lmb_region reserved; | |
29 | }; | |
30 | ||
31 | extern struct lmb lmb; | |
32 | ||
33 | extern void lmb_init(struct lmb *lmb); | |
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34 | extern long lmb_add(struct lmb *lmb, phys_addr_t base, phys_size_t size); |
35 | extern long lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size); | |
36 | extern phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align); | |
37 | extern phys_addr_t lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align, | |
38 | phys_addr_t max_addr); | |
39 | extern phys_addr_t __lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align, | |
40 | phys_addr_t max_addr); | |
41 | extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr); | |
98874ff3 | 42 | extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size); |
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43 | |
44 | extern void lmb_dump_all(struct lmb *lmb); | |
45 | ||
391fd93a | 46 | static inline phys_size_t |
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47 | lmb_size_bytes(struct lmb_region *type, unsigned long region_nr) |
48 | { | |
49 | return type->region[region_nr].size; | |
50 | } | |
a16028da MF |
51 | |
52 | void board_lmb_reserve(struct lmb *lmb); | |
53 | void arch_lmb_reserve(struct lmb *lmb); | |
54 | ||
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55 | #endif /* __KERNEL__ */ |
56 | ||
57 | #endif /* _LINUX_LMB_H */ |