1 | /* $NetBSD: vmem.h,v 1.20 2013/01/29 21:26:24 para Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c)2006 YAMAMOTO Takashi, |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * |
16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
26 | * SUCH DAMAGE. |
27 | */ |
28 | |
29 | #ifndef _SYS_VMEM_H_ |
30 | #define _SYS_VMEM_H_ |
31 | |
32 | #include <sys/types.h> |
33 | |
34 | #if defined(_KERNEL) |
35 | #else /* defined(_KERNEL) */ |
36 | #include <stdbool.h> |
37 | #endif /* defined(_KERNEL) */ |
38 | |
39 | typedef struct vmem vmem_t; |
40 | |
41 | typedef unsigned int vm_flag_t; |
42 | |
43 | typedef uintptr_t vmem_addr_t; |
44 | typedef size_t vmem_size_t; |
45 | #define VMEM_ADDR_MIN 0 |
46 | #define VMEM_ADDR_MAX (~(vmem_addr_t)0) |
47 | |
48 | typedef int (vmem_import_t)(vmem_t *, vmem_size_t, vm_flag_t, vmem_addr_t *); |
49 | typedef void (vmem_release_t)(vmem_t *, vmem_addr_t, vmem_size_t); |
50 | |
51 | typedef int (vmem_ximport_t)(vmem_t *, vmem_size_t, vmem_size_t *, |
52 | vm_flag_t, vmem_addr_t *); |
53 | |
54 | extern vmem_t *kmem_arena; |
55 | extern vmem_t *kmem_meta_arena; |
56 | extern vmem_t *kmem_va_arena; |
57 | |
58 | void vmem_subsystem_init(vmem_t *vm); |
59 | |
60 | vmem_t *vmem_create(const char *, vmem_addr_t, vmem_size_t, vmem_size_t, |
61 | vmem_import_t *, vmem_release_t *, vmem_t *, vmem_size_t, |
62 | vm_flag_t, int); |
63 | vmem_t *vmem_xcreate(const char *, vmem_addr_t, vmem_size_t, vmem_size_t, |
64 | vmem_ximport_t *, vmem_release_t *, vmem_t *, vmem_size_t, |
65 | vm_flag_t, int); |
66 | vmem_t *vmem_init(vmem_t *, const char *, vmem_addr_t, vmem_size_t, vmem_size_t, |
67 | vmem_import_t *, vmem_release_t *, vmem_t *, vmem_size_t, |
68 | vm_flag_t, int); |
69 | void vmem_destroy(vmem_t *); |
70 | int vmem_alloc(vmem_t *, vmem_size_t, vm_flag_t, vmem_addr_t *); |
71 | void vmem_free(vmem_t *, vmem_addr_t, vmem_size_t); |
72 | int vmem_xalloc(vmem_t *, vmem_size_t, vmem_size_t, vmem_size_t, |
73 | vmem_size_t, vmem_addr_t, vmem_addr_t, vm_flag_t, vmem_addr_t *); |
74 | void vmem_xfree(vmem_t *, vmem_addr_t, vmem_size_t); |
75 | int vmem_add(vmem_t *, vmem_addr_t, vmem_size_t, vm_flag_t); |
76 | vmem_size_t vmem_roundup_size(vmem_t *, vmem_size_t); |
77 | vmem_size_t vmem_size(vmem_t *, int typemask); |
78 | void vmem_rehash_start(void); |
79 | void vmem_whatis(uintptr_t, void (*)(const char *, ...) __printflike(1, 2)); |
80 | void vmem_print(uintptr_t, const char *, void (*)(const char *, ...) |
81 | __printflike(1, 2)); |
82 | void vmem_printall(const char *, void (*)(const char *, ...) |
83 | __printflike(1, 2)); |
84 | |
85 | /* vm_flag_t */ |
86 | #define VM_SLEEP 0x00000001 |
87 | #define VM_NOSLEEP 0x00000002 |
88 | #define VM_INSTANTFIT 0x00001000 |
89 | #define VM_BESTFIT 0x00002000 |
90 | #define VM_BOOTSTRAP 0x00010000 |
91 | #define VM_POPULATING 0x00040000 |
92 | #define VM_LARGEIMPORT 0x00080000 |
93 | #define VM_XIMPORT 0x00100000 |
94 | |
95 | /* vmem_size typemask */ |
96 | #define VMEM_ALLOC 0x01 |
97 | #define VMEM_FREE 0x02 |
98 | |
99 | #endif /* !_SYS_VMEM_H_ */ |
100 | |