WebSVN – HelenOS – Diff – /trunk/kernel/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.
 */
 
/** @addtogroup genericmm
 * @{
 */
/** @file
 */
 
#ifndef KERN_FRAME_H_
#define KERN_FRAME_H_
 
#include <arch/types.h>
#include <adt/list.h>
#include <synch/spinlock.h>
#include <mm/buddy.h>
#include <arch/mm/page.h>
#include <arch/mm/frame.h>
 
#define ONE_FRAME   0
#define TWO_FRAMES  1
#define FOUR_FRAMES 2
 
 
#ifdef ARCH_STACK_FRAMES
#define STACK_FRAMES ARCH_STACK_FRAMES
#else
#define STACK_FRAMES ONE_FRAME
#endif
 
/** Maximum number of zones in system. */
#define ZONES_MAX           16
 
/** If possible, merge with neighbouring zones. */
#define ZONE_JOIN           0x1
 
/** Convert the frame address to kernel va. */
#define FRAME_KA        0x1
/** Do not panic and do not sleep on failure. */
#define FRAME_ATOMIC            0x2
/** Do not start reclaiming when no free memory. */
#define FRAME_NO_RECLAIM        0x4
 
static inline uintptr_t PFN2ADDR(pfn_t frame)
{
    return (uintptr_t) (frame << FRAME_WIDTH);
}
 
static inline pfn_t ADDR2PFN(uintptr_t 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)     \
    ((~(((unative_t) -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)
 
extern void frame_init(void);
extern void *frame_alloc_generic(uint8_t order, int flags, unsigned int *pzone);
extern void frame_free(uintptr_t frame);
extern void frame_reference_add(pfn_t pfn);
 
extern int zone_create(pfn_t start, count_t count, pfn_t confframe, int flags);
void *frame_get_parent(pfn_t frame, unsigned int hint);
void frame_set_parent(pfn_t frame, void *data, unsigned int hint);
void frame_mark_unavailable(pfn_t start, count_t count);
uintptr_t zone_conf_size(count_t count);
void zone_merge(unsigned int z1, unsigned int z2);
void zone_merge_all(void);
 
/*
 * Console functions
 */
extern void zone_print_list(void);
void zone_print_one(unsigned int znum);
 
#endif
 
/** @}
 */
 

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/include/mm/frame.h – Rev 2122 → 2465

Rev 2122		Rev 2465
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	/** @addtogroup genericmm	30	/** @addtogroup genericmm
31	* @{	31	* @{
32	*/	32	*/
33	/** @file	33	/** @file
34	*/	34	*/
35		35
36	#ifndef KERN_FRAME_H_	36	#ifndef KERN_FRAME_H_
37	#define KERN_FRAME_H_	37	#define KERN_FRAME_H_
38		38
39	#include <arch/types.h>	39	#include <arch/types.h>
40	#include <adt/list.h>	40	#include <adt/list.h>
41	#include <synch/spinlock.h>	41	#include <synch/spinlock.h>
42	#include <mm/buddy.h>	42	#include <mm/buddy.h>
43	#include <arch/mm/page.h>	43	#include <arch/mm/page.h>
44	#include <arch/mm/frame.h>	44	#include <arch/mm/frame.h>
45		45
46	#define ONE_FRAME 0	46	#define ONE_FRAME 0
47	#define TWO_FRAMES 1	47	#define TWO_FRAMES 1
-		48	#define FOUR_FRAMES 2
-		49
48		50
49	#ifdef ARCH_STACK_FRAMES	51	#ifdef ARCH_STACK_FRAMES
50	#define STACK_FRAMES ARCH_STACK_FRAMES	52	#define STACK_FRAMES ARCH_STACK_FRAMES
51	#else	53	#else
52	#define STACK_FRAMES ONE_FRAME	54	#define STACK_FRAMES ONE_FRAME
53	#endif	55	#endif
54		56
55	/** Maximum number of zones in system. */	57	/** Maximum number of zones in system. */
56	#define ZONES_MAX 16	58	#define ZONES_MAX 16
57		59
58	/** If possible, merge with neighbouring zones. */	60	/** If possible, merge with neighbouring zones. */
59	#define ZONE_JOIN 0x1	61	#define ZONE_JOIN 0x1
60		62
61	/** Convert the frame address to kernel va. */	63	/** Convert the frame address to kernel va. */
62	#define FRAME_KA 0x1	64	#define FRAME_KA 0x1
63	/** Do not panic and do not sleep on failure. */	65	/** Do not panic and do not sleep on failure. */
64	#define FRAME_ATOMIC 0x2	66	#define FRAME_ATOMIC 0x2
65	/** Do not start reclaiming when no free memory. */	67	/** Do not start reclaiming when no free memory. */
66	#define FRAME_NO_RECLAIM 0x4	68	#define FRAME_NO_RECLAIM 0x4
67		69
68	static inline uintptr_t PFN2ADDR(pfn_t frame)	70	static inline uintptr_t PFN2ADDR(pfn_t frame)
69	{	71	{
70	return (uintptr_t) (frame << FRAME_WIDTH);	72	return (uintptr_t) (frame << FRAME_WIDTH);
71	}	73	}
72		74
73	static inline pfn_t ADDR2PFN(uintptr_t addr)	75	static inline pfn_t ADDR2PFN(uintptr_t addr)
74	{	76	{
75	return (pfn_t) (addr >> FRAME_WIDTH);	77	return (pfn_t) (addr >> FRAME_WIDTH);
76	}	78	}
77		79
78	static inline count_t SIZE2FRAMES(size_t size)	80	static inline count_t SIZE2FRAMES(size_t size)
79	{	81	{
80	if (!size)	82	if (!size)
81	return 0;	83	return 0;
82	return (count_t) ((size - 1) >> FRAME_WIDTH) + 1;	84	return (count_t) ((size - 1) >> FRAME_WIDTH) + 1;
83	}	85	}
84		86
85	#define IS_BUDDY_ORDER_OK(index, order) \	87	#define IS_BUDDY_ORDER_OK(index, order) \
86	((~(((unative_t) -1) << (order)) & (index)) == 0)	88	((~(((unative_t) -1) << (order)) & (index)) == 0)
87	#define IS_BUDDY_LEFT_BLOCK(zone, frame) \	89	#define IS_BUDDY_LEFT_BLOCK(zone, frame) \
88	(((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)	90	(((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)
89	#define IS_BUDDY_RIGHT_BLOCK(zone, frame) \	91	#define IS_BUDDY_RIGHT_BLOCK(zone, frame) \
90	(((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)	92	(((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)
91	#define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame) \	93	#define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame) \
92	(((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)	94	(((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)
93	#define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame) \	95	#define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame) \
94	(((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)	96	(((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)
95		97
96	#define frame_alloc(order, flags) \	98	#define frame_alloc(order, flags) \
97	frame_alloc_generic(order, flags, NULL)	99	frame_alloc_generic(order, flags, NULL)
98		100
99	extern void frame_init(void);	101	extern void frame_init(void);
100	extern void frame_alloc_generic(uint8_t order, int flags, unsigned int pzone);	102	extern void frame_alloc_generic(uint8_t order, int flags, unsigned int pzone);
101	extern void frame_free(uintptr_t frame);	103	extern void frame_free(uintptr_t frame);
102	extern void frame_reference_add(pfn_t pfn);	104	extern void frame_reference_add(pfn_t pfn);
103		105
104	extern int zone_create(pfn_t start, count_t count, pfn_t confframe, int flags);	106	extern int zone_create(pfn_t start, count_t count, pfn_t confframe, int flags);
105	void *frame_get_parent(pfn_t frame, unsigned int hint);	107	void *frame_get_parent(pfn_t frame, unsigned int hint);
106	void frame_set_parent(pfn_t frame, void *data, unsigned int hint);	108	void frame_set_parent(pfn_t frame, void *data, unsigned int hint);
107	void frame_mark_unavailable(pfn_t start, count_t count);	109	void frame_mark_unavailable(pfn_t start, count_t count);
108	uintptr_t zone_conf_size(count_t count);	110	uintptr_t zone_conf_size(count_t count);
109	void zone_merge(unsigned int z1, unsigned int z2);	111	void zone_merge(unsigned int z1, unsigned int z2);
110	void zone_merge_all(void);	112	void zone_merge_all(void);
111		113
112	/*	114	/*
113	* Console functions	115	* Console functions
114	*/	116	*/
115	extern void zone_print_list(void);	117	extern void zone_print_list(void);
116	void zone_print_one(unsigned int znum);	118	void zone_print_one(unsigned int znum);
117		119
118	#endif	120	#endif
119		121
120	/** @}	122	/** @}
121	*/	123	*/
122		124