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root/sys/include/vm.h/* [<][>][^][v][top][bottom][index][help] */INCLUDED FROM1 /*- 2 * Copyright (c) 2005-2009, Kohsuke Ohtani 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef _VM_H 31 #define _VM_H 32 33 #include <types.h> 34 #include <sys/cdefs.h> 35 #include <sys/sysinfo.h> 36 #include <sys/bootinfo.h> 37 38 /* 39 * One structure per allocated segment. 40 */ 41 struct seg { 42 struct seg *prev; /* segment list sorted by address */ 43 struct seg *next; 44 struct seg *sh_prev; /* link for all shared segments */ 45 struct seg *sh_next; 46 vaddr_t addr; /* base address */ 47 size_t size; /* size */ 48 int flags; /* SEG_* flag */ 49 paddr_t phys; /* physical address */ 50 }; 51 52 /* Flags for segment */ 53 #define SEG_READ 0x00000001 54 #define SEG_WRITE 0x00000002 55 #define SEG_EXEC 0x00000004 56 #define SEG_SHARED 0x00000008 57 #define SEG_MAPPED 0x00000010 58 #define SEG_FREE 0x00000080 59 60 /* Attribute for vm_attribute() */ 61 #define PROT_NONE 0x0 /* pages cannot be accessed */ 62 #define PROT_READ 0x1 /* pages can be read */ 63 #define PROT_WRITE 0x2 /* pages can be written */ 64 #define PROT_EXEC 0x4 /* pages can be executed */ 65 66 /* 67 * VM mapping per one task. 68 */ 69 struct vm_map { 70 struct seg head; /* list head of segements */ 71 int refcnt; /* reference count */ 72 pgd_t pgd; /* page directory */ 73 size_t total; /* total used size */ 74 }; 75 76 __BEGIN_DECLS 77 int vm_allocate(task_t, void **, size_t, int); 78 int vm_free(task_t, void *); 79 int vm_attribute(task_t, void *, int); 80 int vm_map(task_t, void *, size_t, void **); 81 vm_map_t vm_dup(vm_map_t); 82 vm_map_t vm_create(void); 83 int vm_reference(vm_map_t); 84 void vm_terminate(vm_map_t); 85 void vm_switch(vm_map_t); 86 int vm_load(vm_map_t, struct module *, void **); 87 paddr_t vm_translate(vaddr_t, size_t); 88 int vm_info(struct vminfo *); 89 void vm_init(void); 90 __END_DECLS 91 92 #endif /* !_VM_H */ /* [<][>][^][v][top][bottom][index][help] */ | |||
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Copyright© 2005-2009 Kohsuke Ohtani |
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