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1 | #ifndef _LINUX_LMB_H |
2 | #define _LINUX_LMB_H | |
3 | #ifdef __KERNEL__ | |
4 | ||
5 | #include <asm/types.h> | |
6 | /* | |
7 | * Logical memory blocks. | |
8 | * | |
9 | * Copyright (C) 2001 Peter Bergner, IBM Corp. | |
10 | * | |
1a459660 | 11 | * SPDX-License-Identifier: GPL-2.0+ |
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12 | */ |
13 | ||
14 | #define MAX_LMB_REGIONS 8 | |
15 | ||
16 | struct lmb_property { | |
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17 | phys_addr_t base; |
18 | phys_size_t size; | |
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19 | }; |
20 | ||
21 | struct lmb_region { | |
22 | unsigned long cnt; | |
391fd93a | 23 | phys_size_t size; |
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24 | struct lmb_property region[MAX_LMB_REGIONS+1]; |
25 | }; | |
26 | ||
27 | struct lmb { | |
28 | struct lmb_region memory; | |
29 | struct lmb_region reserved; | |
30 | }; | |
31 | ||
32 | extern struct lmb lmb; | |
33 | ||
34 | extern void lmb_init(struct lmb *lmb); | |
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35 | extern long lmb_add(struct lmb *lmb, phys_addr_t base, phys_size_t size); |
36 | extern long lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size); | |
37 | extern phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align); | |
38 | extern phys_addr_t lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align, | |
39 | phys_addr_t max_addr); | |
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 int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr); | |
98874ff3 | 43 | extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size); |
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44 | |
45 | extern void lmb_dump_all(struct lmb *lmb); | |
46 | ||
391fd93a | 47 | static inline phys_size_t |
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48 | lmb_size_bytes(struct lmb_region *type, unsigned long region_nr) |
49 | { | |
50 | return type->region[region_nr].size; | |
51 | } | |
a16028da MF |
52 | |
53 | void board_lmb_reserve(struct lmb *lmb); | |
54 | void arch_lmb_reserve(struct lmb *lmb); | |
55 | ||
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56 | #endif /* __KERNEL__ */ |
57 | ||
58 | #endif /* _LINUX_LMB_H */ |