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| Rev 689 | Rev 724 | ||
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| Line 47... | Line 47... | ||
| 47 | #define FRAME_ERROR 2 /* frame_alloc return status */ |
47 | #define FRAME_ERROR 2 /* frame_alloc return status */ |
| 48 | 48 | ||
| 49 | #define FRAME2ADDR(zone, frame) ((zone)->base + ((frame) - (zone)->frames) * FRAME_SIZE) |
49 | #define FRAME2ADDR(zone, frame) ((zone)->base + ((frame) - (zone)->frames) * FRAME_SIZE) |
| 50 | #define ADDR2FRAME(zone, addr) (&((zone)->frames[((addr) - (zone)->base) / FRAME_SIZE])) |
50 | #define ADDR2FRAME(zone, addr) (&((zone)->frames[((addr) - (zone)->base) / FRAME_SIZE])) |
| 51 | #define FRAME_INDEX(zone, frame) ((index_t)((frame) - (zone)->frames)) |
51 | #define FRAME_INDEX(zone, frame) ((index_t)((frame) - (zone)->frames)) |
| - | 52 | #define FRAME_INDEX_ABS(zone, frame) (((index_t)((frame) - (zone)->frames)) + (zone)->base_index) |
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| 52 | #define FRAME_INDEX_VALID(zone, index) (((index) >= 0) && ((index) < ((zone)->free_count + (zone)->busy_count))) |
53 | #define FRAME_INDEX_VALID(zone, index) (((index) >= 0) && ((index) < ((zone)->free_count + (zone)->busy_count))) |
| 53 | #define IS_BUDDY_ORDER_OK(index, order) ((~(((__native) -1) << (order)) & (index)) == 0) |
54 | #define IS_BUDDY_ORDER_OK(index, order) ((~(((__native) -1) << (order)) & (index)) == 0) |
| 54 | #define IS_BUDDY_LEFT_BLOCK(zone, frame) (((FRAME_INDEX((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0) |
55 | #define IS_BUDDY_LEFT_BLOCK(zone, frame) (((FRAME_INDEX((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0) |
| 55 | #define IS_BUDDY_RIGHT_BLOCK(zone, frame) (((FRAME_INDEX((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1) |
56 | #define IS_BUDDY_RIGHT_BLOCK(zone, frame) (((FRAME_INDEX((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1) |
| - | 57 | #define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame) (((FRAME_INDEX_ABS((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0) |
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| - | 58 | #define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame) (((FRAME_INDEX_ABS((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1) |
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| 56 | 59 | ||
| 57 | #define ZONE_BLACKLIST_SIZE 4 |
60 | #define ZONE_BLACKLIST_SIZE 4 |
| 58 | 61 | ||
| 59 | struct zone { |
62 | struct zone { |
| 60 | link_t link; /**< link to previous and next zone */ |
63 | link_t link; /**< link to previous and next zone */ |
| 61 | 64 | ||
| 62 | SPINLOCK_DECLARE(lock); /**< this lock protects everything below */ |
65 | SPINLOCK_DECLARE(lock); /**< this lock protects everything below */ |
| 63 | __address base; /**< physical address of the first frame in the frames array */ |
66 | __address base; /**< physical address of the first frame in the frames array */ |
| - | 67 | index_t base_index; /**< frame index offset of the zone base */ |
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| 64 | frame_t *frames; /**< array of frame_t structures in this zone */ |
68 | frame_t *frames; /**< array of frame_t structures in this zone */ |
| 65 | count_t free_count; /**< number of free frame_t structures */ |
69 | count_t free_count; /**< number of free frame_t structures */ |
| 66 | count_t busy_count; /**< number of busy frame_t structures */ |
70 | count_t busy_count; /**< number of busy frame_t structures */ |
| 67 | 71 | ||
| 68 | buddy_system_t * buddy_system; /**< buddy system for the zone */ |
72 | buddy_system_t * buddy_system; /**< buddy system for the zone */ |