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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 <mm/buddy.h> |
41 | #include <mm/buddy.h> |
- | 42 | #include <synch/spinlock.h> |
|
42 | #include <arch/mm/page.h> |
43 | #include <arch/mm/page.h> |
43 | #include <arch/mm/frame.h> |
44 | #include <arch/mm/frame.h> |
44 | 45 | ||
45 | #define ONE_FRAME 0 |
46 | #define ONE_FRAME 0 |
46 | #define TWO_FRAMES 1 |
47 | #define TWO_FRAMES 1 |
47 | #define FOUR_FRAMES 2 |
48 | #define FOUR_FRAMES 2 |
48 | 49 | ||
49 | 50 | ||
50 | #ifdef ARCH_STACK_FRAMES |
51 | #ifdef ARCH_STACK_FRAMES |
51 | #define STACK_FRAMES ARCH_STACK_FRAMES |
52 | #define STACK_FRAMES ARCH_STACK_FRAMES |
52 | #else |
53 | #else |
53 | #define STACK_FRAMES ONE_FRAME |
54 | #define STACK_FRAMES ONE_FRAME |
54 | #endif |
55 | #endif |
55 | 56 | ||
56 | /** Maximum number of zones in the system. */ |
57 | /** Maximum number of zones in the system. */ |
57 | #define ZONES_MAX 32 |
58 | #define ZONES_MAX 32 |
58 | 59 | ||
59 | typedef uint8_t frame_flags_t; |
60 | typedef uint8_t frame_flags_t; |
60 | 61 | ||
61 | /** Convert the frame address to kernel VA. */ |
62 | /** Convert the frame address to kernel VA. */ |
62 | #define FRAME_KA 0x01 |
63 | #define FRAME_KA 0x01 |
63 | /** Do not panic and do not sleep on failure. */ |
64 | /** Do not panic and do not sleep on failure. */ |
64 | #define FRAME_ATOMIC 0x02 |
65 | #define FRAME_ATOMIC 0x02 |
65 | /** Do not start reclaiming when no free memory. */ |
66 | /** Do not start reclaiming when no free memory. */ |
66 | #define FRAME_NO_RECLAIM 0x04 |
67 | #define FRAME_NO_RECLAIM 0x04 |
67 | 68 | ||
68 | typedef uint8_t zone_flags_t; |
69 | typedef uint8_t zone_flags_t; |
69 | 70 | ||
- | 71 | /** Available zone (free for allocation) */ |
|
- | 72 | #define ZONE_AVAILABLE 0x00 |
|
70 | /** Zone is reserved (not available for allocation) */ |
73 | /** Zone is reserved (not available for allocation) */ |
71 | #define ZONE_RESERVED 0x08 |
74 | #define ZONE_RESERVED 0x08 |
72 | /** Zone is used by firmware (not available for allocation) */ |
75 | /** Zone is used by firmware (not available for allocation) */ |
73 | #define ZONE_FIRMWARE 0x10 |
76 | #define ZONE_FIRMWARE 0x10 |
74 | 77 | ||
75 | /** Currently there is no equivalent zone flags |
78 | /** Currently there is no equivalent zone flags |
76 | for frame flags */ |
79 | for frame flags */ |
77 | #define FRAME_TO_ZONE_FLAGS(frame_flags) 0 |
80 | #define FRAME_TO_ZONE_FLAGS(frame_flags) 0 |
78 | 81 | ||
- | 82 | typedef struct { |
|
- | 83 | count_t refcount; /**< Tracking of shared frames */ |
|
- | 84 | uint8_t buddy_order; /**< Buddy system block order */ |
|
- | 85 | link_t buddy_link; /**< Link to the next free block inside |
|
- | 86 | one order */ |
|
- | 87 | void *parent; /**< If allocated by slab, this points there */ |
|
- | 88 | } frame_t; |
|
- | 89 | ||
- | 90 | typedef struct { |
|
- | 91 | pfn_t base; /**< Frame_no of the first frame |
|
- | 92 | in the frames array */ |
|
- | 93 | count_t count; /**< Size of zone */ |
|
- | 94 | count_t free_count; /**< Number of free frame_t |
|
- | 95 | structures */ |
|
- | 96 | count_t busy_count; /**< Number of busy frame_t |
|
- | 97 | structures */ |
|
- | 98 | zone_flags_t flags; /**< Type of the zone */ |
|
- | 99 | ||
- | 100 | frame_t *frames; /**< Array of frame_t structures |
|
- | 101 | in this zone */ |
|
- | 102 | buddy_system_t *buddy_system; /**< Buddy system for the zone */ |
|
- | 103 | } zone_t; |
|
- | 104 | ||
- | 105 | /* |
|
- | 106 | * The zoneinfo.lock must be locked when accessing zoneinfo structure. |
|
- | 107 | * Some of the attributes in zone_t structures are 'read-only' |
|
- | 108 | */ |
|
- | 109 | typedef struct { |
|
- | 110 | SPINLOCK_DECLARE(lock); |
|
- | 111 | count_t count; |
|
- | 112 | zone_t info[ZONES_MAX]; |
|
- | 113 | } zones_t; |
|
- | 114 | ||
- | 115 | extern zones_t zones; |
|
- | 116 | ||
79 | static inline uintptr_t PFN2ADDR(pfn_t frame) |
117 | static inline uintptr_t PFN2ADDR(pfn_t frame) |
80 | { |
118 | { |
81 | return (uintptr_t) (frame << FRAME_WIDTH); |
119 | return (uintptr_t) (frame << FRAME_WIDTH); |
82 | } |
120 | } |
83 | 121 | ||
84 | static inline pfn_t ADDR2PFN(uintptr_t addr) |
122 | static inline pfn_t ADDR2PFN(uintptr_t addr) |
85 | { |
123 | { |
86 | return (pfn_t) (addr >> FRAME_WIDTH); |
124 | return (pfn_t) (addr >> FRAME_WIDTH); |
87 | } |
125 | } |
88 | 126 | ||
89 | static inline count_t SIZE2FRAMES(size_t size) |
127 | static inline count_t SIZE2FRAMES(size_t size) |
90 | { |
128 | { |
91 | if (!size) |
129 | if (!size) |
92 | return 0; |
130 | return 0; |
93 | return (count_t) ((size - 1) >> FRAME_WIDTH) + 1; |
131 | return (count_t) ((size - 1) >> FRAME_WIDTH) + 1; |
94 | } |
132 | } |
95 | 133 | ||
96 | static inline size_t FRAMES2SIZE(count_t frames) |
134 | static inline size_t FRAMES2SIZE(count_t frames) |
97 | { |
135 | { |
98 | return (size_t) (frames << FRAME_WIDTH); |
136 | return (size_t) (frames << FRAME_WIDTH); |
99 | } |
137 | } |
100 | 138 | ||
- | 139 | static inline bool zone_flags_available(zone_flags_t flags) |
|
- | 140 | { |
|
- | 141 | return ((flags & (ZONE_RESERVED | ZONE_FIRMWARE)) == 0); |
|
- | 142 | } |
|
- | 143 | ||
101 | #define IS_BUDDY_ORDER_OK(index, order) \ |
144 | #define IS_BUDDY_ORDER_OK(index, order) \ |
102 | ((~(((unative_t) -1) << (order)) & (index)) == 0) |
145 | ((~(((unative_t) -1) << (order)) & (index)) == 0) |
103 | #define IS_BUDDY_LEFT_BLOCK(zone, frame) \ |
146 | #define IS_BUDDY_LEFT_BLOCK(zone, frame) \ |
104 | (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x01) == 0) |
147 | (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x01) == 0) |
105 | #define IS_BUDDY_RIGHT_BLOCK(zone, frame) \ |
148 | #define IS_BUDDY_RIGHT_BLOCK(zone, frame) \ |
106 | (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x01) == 1) |
149 | (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x01) == 1) |
107 | #define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame) \ |
150 | #define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame) \ |
108 | (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x01) == 0) |
151 | (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x01) == 0) |
109 | #define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame) \ |
152 | #define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame) \ |
110 | (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x01) == 1) |
153 | (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x01) == 1) |
111 | 154 | ||
112 | #define frame_alloc(order, flags) \ |
155 | #define frame_alloc(order, flags) \ |
113 | frame_alloc_generic(order, flags, NULL) |
156 | frame_alloc_generic(order, flags, NULL) |
114 | 157 | ||
115 | extern void frame_init(void); |
158 | extern void frame_init(void); |
116 | extern void *frame_alloc_generic(uint8_t, frame_flags_t, count_t *); |
159 | extern void *frame_alloc_generic(uint8_t, frame_flags_t, count_t *); |
117 | extern void frame_free(uintptr_t); |
160 | extern void frame_free(uintptr_t); |
118 | extern void frame_reference_add(pfn_t); |
161 | extern void frame_reference_add(pfn_t); |
119 | 162 | ||
- | 163 | extern count_t find_zone(pfn_t frame, count_t count, count_t hint); |
|
120 | extern count_t zone_create(pfn_t, count_t, pfn_t, zone_flags_t); |
164 | extern count_t zone_create(pfn_t, count_t, pfn_t, zone_flags_t); |
121 | extern void *frame_get_parent(pfn_t, count_t); |
165 | extern void *frame_get_parent(pfn_t, count_t); |
122 | extern void frame_set_parent(pfn_t, void *, count_t); |
166 | extern void frame_set_parent(pfn_t, void *, count_t); |
123 | extern void frame_mark_unavailable(pfn_t, count_t); |
167 | extern void frame_mark_unavailable(pfn_t, count_t); |
124 | extern uintptr_t zone_conf_size(count_t); |
168 | extern uintptr_t zone_conf_size(count_t); |
125 | extern bool zone_merge(count_t, count_t); |
169 | extern bool zone_merge(count_t, count_t); |
126 | extern void zone_merge_all(void); |
170 | extern void zone_merge_all(void); |
127 | extern uint64_t zone_total_size(void); |
171 | extern uint64_t zone_total_size(void); |
128 | 172 | ||
129 | /* |
173 | /* |
130 | * Console functions |
174 | * Console functions |
131 | */ |
175 | */ |
132 | extern void zone_print_list(void); |
176 | extern void zone_print_list(void); |
133 | extern void zone_print_one(count_t); |
177 | extern void zone_print_one(count_t); |
134 | 178 | ||
135 | #endif |
179 | #endif |
136 | 180 | ||
137 | /** @} |
181 | /** @} |
138 | */ |
182 | */ |
139 | 183 |