WebSVN – HelenOS – Diff – /trunk/kernel/generic/include/mm/page.h


/*
 * Copyright (c) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup genericmm
 * @{
 */
/** @file
 */
 
#ifndef KERN_PAGE_H_
#define KERN_PAGE_H_
 
#include <arch/mm/asid.h>
#include <arch/types.h>
#include <typedefs.h>
#include <memstr.h>
 
#define PAGE_CACHEABLE_SHIFT        0
#define PAGE_NOT_CACHEABLE_SHIFT    PAGE_CACHEABLE_SHIFT
#define PAGE_PRESENT_SHIFT      1
#define PAGE_NOT_PRESENT_SHIFT      PAGE_PRESENT_SHIFT
#define PAGE_USER_SHIFT         2
#define PAGE_KERNEL_SHIFT       PAGE_USER_SHIFT
#define PAGE_READ_SHIFT         3
#define PAGE_WRITE_SHIFT        4
#define PAGE_EXEC_SHIFT         5
#define PAGE_GLOBAL_SHIFT       6
 
#define PAGE_NOT_CACHEABLE  (0<<PAGE_CACHEABLE_SHIFT)
#define PAGE_CACHEABLE      (1<<PAGE_CACHEABLE_SHIFT)
 
#define PAGE_PRESENT        (0<<PAGE_PRESENT_SHIFT)
#define PAGE_NOT_PRESENT    (1<<PAGE_PRESENT_SHIFT)
 
#define PAGE_USER       (1<<PAGE_USER_SHIFT)
#define PAGE_KERNEL     (0<<PAGE_USER_SHIFT)
 
#define PAGE_READ       (1<<PAGE_READ_SHIFT)
#define PAGE_WRITE      (1<<PAGE_WRITE_SHIFT)
#define PAGE_EXEC       (1<<PAGE_EXEC_SHIFT)
 
#define PAGE_GLOBAL     (1<<PAGE_GLOBAL_SHIFT)
 
 
/**
 * Macro for computing page color.
 */
#define PAGE_COLOR(va)  (((va) >> PAGE_WIDTH) & ((1 << PAGE_COLOR_BITS) - 1))
 
/** Page fault access type. */
enum pf_access {
    PF_ACCESS_READ,
    PF_ACCESS_WRITE,
    PF_ACCESS_EXEC
};
typedef enum pf_access pf_access_t;
 
/** Operations to manipulate page mappings. */
struct page_mapping_operations {
    void (* mapping_insert)(as_t *as, uintptr_t page, uintptr_t frame, int
        flags);
    void (* mapping_remove)(as_t *as, uintptr_t page);
    pte_t *(* mapping_find)(as_t *as, uintptr_t page);
};
typedef struct page_mapping_operations page_mapping_operations_t;
 
extern page_mapping_operations_t *page_mapping_operations;
 
extern void page_init(void);
extern void page_table_lock(as_t *as, bool lock);
extern void page_table_unlock(as_t *as, bool unlock);
extern void page_mapping_insert(as_t *as, uintptr_t page, uintptr_t frame, int
    flags);
extern void page_mapping_remove(as_t *as, uintptr_t page);
extern pte_t *page_mapping_find(as_t *as, uintptr_t page);
extern pte_t *page_table_create(int flags);
extern void page_table_destroy(pte_t *page_table);
extern void map_structure(uintptr_t s, size_t size);
extern uintptr_t hw_map(uintptr_t physaddr, size_t size);
 
#endif
 
/** @}
 */
 

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/include/mm/page.h – Rev 2015 → 2071

Rev 2015		Rev 2071
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (c) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup genericmm	29	/** @addtogroup genericmm
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#ifndef KERN_PAGE_H_	35	#ifndef KERN_PAGE_H_
36	#define KERN_PAGE_H_	36	#define KERN_PAGE_H_
37		37
38	#include <arch/mm/asid.h>	38	#include <arch/mm/asid.h>
39	#include <arch/types.h>	39	#include <arch/types.h>
40	#include <typedefs.h>	40	#include <typedefs.h>
41	#include <memstr.h>	41	#include <memstr.h>
42		42
43	#define PAGE_CACHEABLE_SHIFT 0	43	#define PAGE_CACHEABLE_SHIFT 0
44	#define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT	44	#define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT
45	#define PAGE_PRESENT_SHIFT 1	45	#define PAGE_PRESENT_SHIFT 1
46	#define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT	46	#define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT
47	#define PAGE_USER_SHIFT 2	47	#define PAGE_USER_SHIFT 2
48	#define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT	48	#define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT
49	#define PAGE_READ_SHIFT 3	49	#define PAGE_READ_SHIFT 3
50	#define PAGE_WRITE_SHIFT 4	50	#define PAGE_WRITE_SHIFT 4
51	#define PAGE_EXEC_SHIFT 5	51	#define PAGE_EXEC_SHIFT 5
52	#define PAGE_GLOBAL_SHIFT 6	52	#define PAGE_GLOBAL_SHIFT 6
53		53
54	#define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT)	54	#define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT)
55	#define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT)	55	#define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT)
56		56
57	#define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT)	57	#define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT)
58	#define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT)	58	#define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT)
59		59
60	#define PAGE_USER (1<<PAGE_USER_SHIFT)	60	#define PAGE_USER (1<<PAGE_USER_SHIFT)
61	#define PAGE_KERNEL (0<<PAGE_USER_SHIFT)	61	#define PAGE_KERNEL (0<<PAGE_USER_SHIFT)
62		62
63	#define PAGE_READ (1<<PAGE_READ_SHIFT)	63	#define PAGE_READ (1<<PAGE_READ_SHIFT)
64	#define PAGE_WRITE (1<<PAGE_WRITE_SHIFT)	64	#define PAGE_WRITE (1<<PAGE_WRITE_SHIFT)
65	#define PAGE_EXEC (1<<PAGE_EXEC_SHIFT)	65	#define PAGE_EXEC (1<<PAGE_EXEC_SHIFT)
66		66
67	#define PAGE_GLOBAL (1<<PAGE_GLOBAL_SHIFT)	67	#define PAGE_GLOBAL (1<<PAGE_GLOBAL_SHIFT)
68		68
69		69
70	/**	70	/**
71	* Macro for computing page color.	71	* Macro for computing page color.
72	*/	72	*/
73	#define PAGE_COLOR(va) (((va) >> PAGE_WIDTH) & ((1 << PAGE_COLOR_BITS) - 1))	73	#define PAGE_COLOR(va) (((va) >> PAGE_WIDTH) & ((1 << PAGE_COLOR_BITS) - 1))
74		74
75	/** Page fault access type. */	75	/** Page fault access type. */
76	enum pf_access {	76	enum pf_access {
77	PF_ACCESS_READ,	77	PF_ACCESS_READ,
78	PF_ACCESS_WRITE,	78	PF_ACCESS_WRITE,
79	PF_ACCESS_EXEC	79	PF_ACCESS_EXEC
80	};	80	};
81	typedef enum pf_access pf_access_t;	81	typedef enum pf_access pf_access_t;
82		82
83	/** Operations to manipulate page mappings. */	83	/** Operations to manipulate page mappings. */
84	struct page_mapping_operations {	84	struct page_mapping_operations {
85	void (* mapping_insert)(as_t *as, uintptr_t page, uintptr_t frame, int	85	void (* mapping_insert)(as_t *as, uintptr_t page, uintptr_t frame, int
86	flags);	86	flags);
87	void (* mapping_remove)(as_t *as, uintptr_t page);	87	void (* mapping_remove)(as_t *as, uintptr_t page);
88	pte_t ( mapping_find)(as_t *as, uintptr_t page);	88	pte_t ( mapping_find)(as_t *as, uintptr_t page);
89	};	89	};
90	typedef struct page_mapping_operations page_mapping_operations_t;	90	typedef struct page_mapping_operations page_mapping_operations_t;
91		91
92	extern page_mapping_operations_t *page_mapping_operations;	92	extern page_mapping_operations_t *page_mapping_operations;
93		93
94	extern void page_init(void);	94	extern void page_init(void);
95	extern void page_table_lock(as_t *as, bool lock);	95	extern void page_table_lock(as_t *as, bool lock);
96	extern void page_table_unlock(as_t *as, bool unlock);	96	extern void page_table_unlock(as_t *as, bool unlock);
97	extern void page_mapping_insert(as_t *as, uintptr_t page, uintptr_t frame, int	97	extern void page_mapping_insert(as_t *as, uintptr_t page, uintptr_t frame, int
98	flags);	98	flags);
99	extern void page_mapping_remove(as_t *as, uintptr_t page);	99	extern void page_mapping_remove(as_t *as, uintptr_t page);
100	extern pte_t page_mapping_find(as_t as, uintptr_t page);	100	extern pte_t page_mapping_find(as_t as, uintptr_t page);
101	extern pte_t *page_table_create(int flags);	101	extern pte_t *page_table_create(int flags);
102	extern void page_table_destroy(pte_t *page_table);	102	extern void page_table_destroy(pte_t *page_table);
103	extern void map_structure(uintptr_t s, size_t size);	103	extern void map_structure(uintptr_t s, size_t size);
104	extern uintptr_t hw_map(uintptr_t physaddr, size_t size);	104	extern uintptr_t hw_map(uintptr_t physaddr, size_t size);
105		105
106	#endif	106	#endif
107		107
108	/** @}	108	/** @}
109	*/	109	*/
110		110