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| Rev | Author | Line No. | Line |
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| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2005 Jakub Jermar |
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| 480 | bondari | 3 | * Copyright (C) 2005 Sergey Bondari |
| 1 | jermar | 4 | * All rights reserved. |
| 5 | * |
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| 6 | * Redistribution and use in source and binary forms, with or without |
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| 7 | * modification, are permitted provided that the following conditions |
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| 8 | * are met: |
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| 9 | * |
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| 10 | * - Redistributions of source code must retain the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer. |
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| 12 | * - Redistributions in binary form must reproduce the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer in the |
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| 14 | * documentation and/or other materials provided with the distribution. |
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| 15 | * - The name of the author may not be used to endorse or promote products |
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| 16 | * derived from this software without specific prior written permission. |
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| 17 | * |
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 28 | */ |
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| 29 | |||
| 30 | #ifndef __FRAME_H__ |
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| 31 | #define __FRAME_H__ |
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| 32 | |||
| 33 | #include <arch/types.h> |
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| 102 | jermar | 34 | #include <typedefs.h> |
| 788 | jermar | 35 | #include <adt/list.h> |
| 354 | jermar | 36 | #include <synch/spinlock.h> |
| 479 | bondari | 37 | #include <mm/buddy.h> |
| 814 | palkovsky | 38 | #include <arch/mm/page.h> |
| 1 | jermar | 39 | |
| 548 | jermar | 40 | #define ONE_FRAME 0 |
| 41 | |||
| 814 | palkovsky | 42 | #define ZONES_MAX 16 /**< Maximum number of zones in system */ |
| 43 | |||
| 44 | #define ZONE_JOIN 0x1 /**< If possible, merge with neighberhood zones */ |
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| 45 | |||
| 46 | |||
| 762 | palkovsky | 47 | #define FRAME_KA 0x1 /* skip frames conflicting with user address space */ |
| 48 | #define FRAME_PANIC 0x2 /* panic on failure */ |
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| 49 | #define FRAME_ATOMIC 0x4 /* do not panic and do not sleep on failure */ |
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| 50 | #define FRAME_NO_RECLAIM 0x8 /* Do not start reclaiming when no free memory */ |
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| 1 | jermar | 51 | |
| 689 | bondari | 52 | #define FRAME_OK 0 /* frame_alloc return status */ |
| 53 | #define FRAME_NO_MEMORY 1 /* frame_alloc return status */ |
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| 54 | #define FRAME_ERROR 2 /* frame_alloc return status */ |
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| 55 | |||
| 814 | palkovsky | 56 | /* Return true if the interlvals overlap */ |
| 57 | static inline int overlaps(__address s1,__address e1, __address s2, __address e2) |
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| 58 | { |
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| 59 | if (s1 >= s2 && s1 < e2) |
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| 60 | return 1; |
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| 61 | if (e1 >= s2 && e1 < e2) |
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| 62 | return 1; |
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| 63 | if ((s1 < s2) && (e1 >= e2)) |
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| 64 | return 1; |
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| 65 | return 0; |
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| 66 | } |
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| 67 | |||
| 68 | static inline __address PFN2ADDR(pfn_t frame) |
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| 69 | { |
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| 70 | return (__address)(frame << PAGE_WIDTH); |
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| 71 | } |
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| 72 | |||
| 73 | static inline pfn_t ADDR2PFN(__address addr) |
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| 74 | { |
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| 75 | return (pfn_t)(addr >> PAGE_WIDTH); |
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| 76 | } |
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| 77 | |||
| 78 | static inline pfn_t SIZE2PFN(__address size) |
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| 79 | { |
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| 80 | if (!size) |
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| 81 | return 0; |
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| 82 | return (pfn_t)((size-1) >> PAGE_WIDTH)+1; |
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| 83 | } |
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| 84 | |||
| 564 | jermar | 85 | #define IS_BUDDY_ORDER_OK(index, order) ((~(((__native) -1) << (order)) & (index)) == 0) |
| 814 | palkovsky | 86 | #define IS_BUDDY_LEFT_BLOCK(zone, frame) (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0) |
| 87 | #define IS_BUDDY_RIGHT_BLOCK(zone, frame) (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1) |
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| 88 | #define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame) (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0) |
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| 89 | #define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame) (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1) |
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| 479 | bondari | 90 | |
| 480 | bondari | 91 | |
| 786 | bondari | 92 | #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) |
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| 94 | #define frame_alloc_rc_zone(order, flags, status, zone) frame_alloc_generic(order, flags, status, zone) |
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| 95 | |||
| 1 | jermar | 96 | extern void frame_init(void); |
| 814 | palkovsky | 97 | __address frame_alloc_generic(__u8 order, int flags, int * status, int *pzone); |
| 1 | jermar | 98 | extern void frame_free(__address addr); |
| 689 | bondari | 99 | |
| 814 | palkovsky | 100 | extern void zone_create(pfn_t start, pfn_t count, pfn_t confframe, int flags); |
| 1 | jermar | 101 | |
| 814 | palkovsky | 102 | void * frame_get_parent(pfn_t frame, int hint); |
| 103 | void frame_set_parent(pfn_t frame, void *data, int hint); |
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| 104 | void frame_mark_unavailable(pfn_t start, pfn_t count); |
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| 105 | __address zone_conf_size(pfn_t start, pfn_t count); |
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| 479 | bondari | 106 | |
| 107 | /* |
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| 676 | bondari | 108 | * Console functions |
| 109 | */ |
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| 110 | extern void zone_print_list(void); |
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| 814 | palkovsky | 111 | void zone_print_one(int znum); |
| 676 | bondari | 112 | |
| 1 | jermar | 113 | #endif |