| 0,0 → 1,109 |
|---|
| /* |
| * 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 |