| 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 | |