WebSVN – HelenOS-historic – Diff – /kernel/trunk/generic/include/mm/frame.h


/*
 * Copyright (C) 2005 Jakub Jermar
 * Copyright (C) 2005 Sergey Bondari
 * 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.
 */
 
#ifndef __FRAME_H__
#define __FRAME_H__
 
#include <arch/types.h>
#include <typedefs.h>
#include <adt/list.h>
#include <synch/spinlock.h>
#include <mm/buddy.h>
#include <arch/mm/page.h>
 
#define ONE_FRAME   0
 
#define ZONES_MAX       16      /**< Maximum number of zones in system */
 
#define ZONE_JOIN       0x1 /**< If possible, merge with neighberhood zones */
 
#define FRAME_KA        0x1 /* skip frames conflicting with user address space */
#define FRAME_PANIC     0x2 /* panic on failure */
#define FRAME_ATOMIC            0x4 /* do not panic and do not sleep on failure */
#define FRAME_NO_RECLAIM        0x8     /* do not start reclaiming when no free memory */
 
#define FRAME_OK        0   /* frame_alloc return status */
#define FRAME_NO_MEMORY     1   /* frame_alloc return status */
#define FRAME_ERROR     2   /* frame_alloc return status */
 
/* Return true if the interlvals overlap */
static inline int overlaps(__address s1,__address sz1, __address s2, __address sz2)
{
    __address e1 = s1+sz1;
    __address e2 = s2+sz2;
 
 
    return s1 < e2 && s2 < e1;
 
 
 
 
}
 
static inline __address PFN2ADDR(pfn_t frame)
{
    return (__address)(frame << FRAME_WIDTH);
}
 
static inline pfn_t ADDR2PFN(__address addr)
{
    return (pfn_t)(addr >> FRAME_WIDTH);
}
 
static inline count_t SIZE2FRAMES(size_t size)
{
    if (!size)
        return 0;
    return (count_t)((size-1) >> FRAME_WIDTH)+1;
}
 
#define IS_BUDDY_ORDER_OK(index, order)     ((~(((__native) -1) << (order)) & (index)) == 0)
#define IS_BUDDY_LEFT_BLOCK(zone, frame)    (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)
#define IS_BUDDY_RIGHT_BLOCK(zone, frame)   (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)
#define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame)    (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)
#define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame)   (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)
 
#define frame_alloc(order, flags)               frame_alloc_generic(order, flags, NULL, NULL)
#define frame_alloc_rc(order, flags, status)            frame_alloc_generic(order, flags, status, NULL)
#define frame_alloc_rc_zone(order, flags, status, zone)     frame_alloc_generic(order, flags, status, zone)
 
extern void frame_init(void);
__address frame_alloc_generic(__u8 order, int flags, int * status, int *pzone);
extern void frame_free(__address addr);
 
extern int zone_create(pfn_t start, count_t count, pfn_t confframe, int flags);
void * frame_get_parent(pfn_t frame, int hint);
void frame_set_parent(pfn_t frame, void *data, int hint);
void frame_mark_unavailable(pfn_t start, count_t count);
__address zone_conf_size(count_t count);
void zone_merge(int z1, int z2);
void zone_merge_all(void);
 
/*
 * Console functions
 */
extern void zone_print_list(void);
void zone_print_one(int znum);
 
#endif
 

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/include/mm/frame.h @ 936 – Rev 822 → 827

Rev 822		Rev 827
1	/*	1	/*
2	* Copyright (C) 2005 Jakub Jermar	2	* Copyright (C) 2005 Jakub Jermar
3	* Copyright (C) 2005 Sergey Bondari	3	* Copyright (C) 2005 Sergey Bondari
4	* All rights reserved.	4	* All rights reserved.
5	*	5	*
6	* Redistribution and use in source and binary forms, with or without	6	* Redistribution and use in source and binary forms, with or without
7	* modification, are permitted provided that the following conditions	7	* modification, are permitted provided that the following conditions
8	* are met:	8	* are met:
9	*	9	*
10	* - Redistributions of source code must retain the above copyright	10	* - Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.	11	* notice, this list of conditions and the following disclaimer.
12	* - Redistributions in binary form must reproduce the above copyright	12	* - Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the	13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.	14	* documentation and/or other materials provided with the distribution.
15	* - The name of the author may not be used to endorse or promote products	15	* - The name of the author may not be used to endorse or promote products
16	* derived from this software without specific prior written permission.	16	* derived from this software without specific prior written permission.
17	*	17	*
18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	28	*/
29		29
30	#ifndef __FRAME_H__	30	#ifndef __FRAME_H__
31	#define __FRAME_H__	31	#define __FRAME_H__
32		32
33	#include <arch/types.h>	33	#include <arch/types.h>
34	#include <typedefs.h>	34	#include <typedefs.h>
35	#include <adt/list.h>	35	#include <adt/list.h>
36	#include <synch/spinlock.h>	36	#include <synch/spinlock.h>
37	#include <mm/buddy.h>	37	#include <mm/buddy.h>
38	#include <arch/mm/page.h>	38	#include <arch/mm/page.h>
39		39
40	#define ONE_FRAME 0	40	#define ONE_FRAME 0
41		41
42	#define ZONES_MAX 16 /*< Maximum number of zones in system /	42	#define ZONES_MAX 16 /*< Maximum number of zones in system /
43		43
44	#define ZONE_JOIN 0x1 /*< If possible, merge with neighberhood zones /	44	#define ZONE_JOIN 0x1 /*< If possible, merge with neighberhood zones /
45		45
46	#define FRAME_KA 0x1 /* skip frames conflicting with user address space */	46	#define FRAME_KA 0x1 /* skip frames conflicting with user address space */
47	#define FRAME_PANIC 0x2 /* panic on failure */	47	#define FRAME_PANIC 0x2 /* panic on failure */
48	#define FRAME_ATOMIC 0x4 /* do not panic and do not sleep on failure */	48	#define FRAME_ATOMIC 0x4 /* do not panic and do not sleep on failure */
49	#define FRAME_NO_RECLAIM 0x8 /* do not start reclaiming when no free memory */	49	#define FRAME_NO_RECLAIM 0x8 /* do not start reclaiming when no free memory */
50		50
51	#define FRAME_OK 0 /* frame_alloc return status */	51	#define FRAME_OK 0 /* frame_alloc return status */
52	#define FRAME_NO_MEMORY 1 /* frame_alloc return status */	52	#define FRAME_NO_MEMORY 1 /* frame_alloc return status */
53	#define FRAME_ERROR 2 /* frame_alloc return status */	53	#define FRAME_ERROR 2 /* frame_alloc return status */
54		54
55	/* Return true if the interlvals overlap */	55	/* Return true if the interlvals overlap */
56	static inline int overlaps(__address s1,__address sz1, __address s2, __address sz2)	56	static inline int overlaps(__address s1,__address sz1, __address s2, __address sz2)
57	{	57	{
58	__address e1 = s1+sz1;	58	__address e1 = s1+sz1;
59	__address e2 = s2+sz2;	59	__address e2 = s2+sz2;
60	if (s1 >= s2 && s1 < e2)	-
61	return 1;	60
62	if (e1 >= s2 && e1 < e2)	61	return s1 < e2 && s2 < e1;
63	return 1;	-
64	if ((s1 < s2) && (e1 >= e2))	-
65	return 1;	-
66	return 0;	-
67	}	62	}
68		63
69	static inline __address PFN2ADDR(pfn_t frame)	64	static inline __address PFN2ADDR(pfn_t frame)
70	{	65	{
71	return (__address)(frame << FRAME_WIDTH);	66	return (__address)(frame << FRAME_WIDTH);
72	}	67	}
73		68
74	static inline pfn_t ADDR2PFN(__address addr)	69	static inline pfn_t ADDR2PFN(__address addr)
75	{	70	{
76	return (pfn_t)(addr >> FRAME_WIDTH);	71	return (pfn_t)(addr >> FRAME_WIDTH);
77	}	72	}
78		73
79	static inline count_t SIZE2FRAMES(size_t size)	74	static inline count_t SIZE2FRAMES(size_t size)
80	{	75	{
81	if (!size)	76	if (!size)
82	return 0;	77	return 0;
83	return (count_t)((size-1) >> FRAME_WIDTH)+1;	78	return (count_t)((size-1) >> FRAME_WIDTH)+1;
84	}	79	}
85		80
86	#define IS_BUDDY_ORDER_OK(index, order) ((~(((__native) -1) << (order)) & (index)) == 0)	81	#define IS_BUDDY_ORDER_OK(index, order) ((~(((__native) -1) << (order)) & (index)) == 0)
87	#define IS_BUDDY_LEFT_BLOCK(zone, frame) (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)	82	#define IS_BUDDY_LEFT_BLOCK(zone, frame) (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)
88	#define IS_BUDDY_RIGHT_BLOCK(zone, frame) (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)	83	#define IS_BUDDY_RIGHT_BLOCK(zone, frame) (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)
89	#define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame) (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)	84	#define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame) (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)
90	#define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame) (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)	85	#define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame) (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)
91		86
92	#define frame_alloc(order, flags) frame_alloc_generic(order, flags, NULL, NULL)	87	#define frame_alloc(order, flags) frame_alloc_generic(order, flags, NULL, NULL)
93	#define frame_alloc_rc(order, flags, status) frame_alloc_generic(order, flags, status, NULL)	88	#define frame_alloc_rc(order, flags, status) frame_alloc_generic(order, flags, status, NULL)
94	#define frame_alloc_rc_zone(order, flags, status, zone) frame_alloc_generic(order, flags, status, zone)	89	#define frame_alloc_rc_zone(order, flags, status, zone) frame_alloc_generic(order, flags, status, zone)
95		90
96	extern void frame_init(void);	91	extern void frame_init(void);
97	__address frame_alloc_generic(__u8 order, int flags, int * status, int *pzone);	92	__address frame_alloc_generic(__u8 order, int flags, int * status, int *pzone);
98	extern void frame_free(__address addr);	93	extern void frame_free(__address addr);
99		94
100	extern int zone_create(pfn_t start, count_t count, pfn_t confframe, int flags);	95	extern int zone_create(pfn_t start, count_t count, pfn_t confframe, int flags);
101	void * frame_get_parent(pfn_t frame, int hint);	96	void * frame_get_parent(pfn_t frame, int hint);
102	void frame_set_parent(pfn_t frame, void *data, int hint);	97	void frame_set_parent(pfn_t frame, void *data, int hint);
103	void frame_mark_unavailable(pfn_t start, count_t count);	98	void frame_mark_unavailable(pfn_t start, count_t count);
104	__address zone_conf_size(count_t count);	99	__address zone_conf_size(count_t count);
105	void zone_merge(int z1, int z2);	100	void zone_merge(int z1, int z2);
106	void zone_merge_all(void);	101	void zone_merge_all(void);
107		102
108	/*	103	/*
109	* Console functions	104	* Console functions
110	*/	105	*/
111	extern void zone_print_list(void);	106	extern void zone_print_list(void);
112	void zone_print_one(int znum);	107	void zone_print_one(int znum);
113		108
114	#endif	109	#endif
115		110