Rev 102 | Rev 355 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 102 | Rev 354 | ||
|---|---|---|---|
| 1 | /* |
1 | /* |
| 2 | * Copyright (C) 2005 Jakub Jermar |
2 | * Copyright (C) 2005 Jakub Jermar |
| 3 | * All rights reserved. |
3 | * All rights reserved. |
| 4 | * |
4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
7 | * are met: |
| 8 | * |
8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
| 14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
| 15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
| 16 | * |
16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | #ifndef __FRAME_H__ |
29 | #ifndef __FRAME_H__ |
| 30 | #define __FRAME_H__ |
30 | #define __FRAME_H__ |
| 31 | 31 | ||
| 32 | #include <arch/types.h> |
32 | #include <arch/types.h> |
| 33 | #include <typedefs.h> |
33 | #include <typedefs.h> |
| - | 34 | #include <list.h> |
|
| - | 35 | #include <synch/spinlock.h> |
|
| 34 | 36 | ||
| 35 | #define FRAME_KA 1 /* skip frames conflicting with user address space */ |
37 | #define FRAME_KA 1 /* skip frames conflicting with user address space */ |
| 36 | #define FRAME_PANIC 2 /* panic on failure */ |
38 | #define FRAME_PANIC 2 /* panic on failure */ |
| 37 | 39 | ||
| - | 40 | struct frame_zone { |
|
| - | 41 | link_t fz_link; /**< link to previous and next frame_zone */ |
|
| - | 42 | ||
| - | 43 | spinlock_t lock; /**< this lock protexts everything below */ |
|
| - | 44 | link_t free_head; /**< list of free frames */ |
|
| - | 45 | link_t busy_head; /**< list of busy frames */ |
|
| - | 46 | count_t free_count; /**< frames in free list */ |
|
| - | 47 | count_t busy_count; /**< frames in busy list */ |
|
| - | 48 | frame_t *frames; /**< array of frames in this zone */ |
|
| - | 49 | int flags; |
|
| - | 50 | }; |
|
| - | 51 | ||
| - | 52 | struct frame { |
|
| - | 53 | count_t refcount; /**< when > 0, the frame is in busy list, otherwise the frame is in free list */ |
|
| - | 54 | link_t link; /**< link either to frame_zone free or busy list */ |
|
| - | 55 | }; |
|
| - | 56 | ||
| - | 57 | extern spinlock_t frame_zone_head_lock; /**< this lock protects frame_zone_head list */ |
|
| - | 58 | extern link_t frame_zone_head; /**< list of all frame_zone's in the system */ |
|
| - | 59 | ||
| 38 | extern count_t frames; |
60 | extern count_t frames; |
| 39 | extern count_t frames_free; |
61 | extern count_t frames_free; |
| 40 | 62 | ||
| 41 | extern count_t kernel_frames; |
63 | extern count_t kernel_frames; |
| 42 | extern count_t kernel_frames_free; |
64 | extern count_t kernel_frames_free; |
| 43 | 65 | ||
| 44 | extern __u8 *frame_bitmap; |
66 | extern __u8 *frame_bitmap; |
| 45 | extern count_t frame_bitmap_octets; |
67 | extern count_t frame_bitmap_octets; |
| 46 | 68 | ||
| 47 | extern __u8 *frame_kernel_bitmap; |
69 | extern __u8 *frame_kernel_bitmap; |
| 48 | 70 | ||
| 49 | extern void frame_init(void); |
71 | extern void frame_init(void); |
| 50 | 72 | ||
| 51 | __address frame_alloc(int flags); |
73 | __address frame_alloc(int flags); |
| 52 | extern void frame_free(__address addr); |
74 | extern void frame_free(__address addr); |
| 53 | extern void frame_not_free(__address addr); |
75 | extern void frame_not_free(__address addr); |
| 54 | extern void frame_region_not_free(__address start, __address stop); |
76 | extern void frame_region_not_free(__address start, __address stop); |
| 55 | 77 | ||
| 56 | #endif |
78 | #endif |
| 57 | 79 | ||