39,6 → 39,7 |
#include <arch/types.h> |
#include <adt/list.h> |
#include <mm/buddy.h> |
#include <synch/spinlock.h> |
#include <arch/mm/page.h> |
#include <arch/mm/frame.h> |
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67,15 → 68,52 |
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typedef uint8_t zone_flags_t; |
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/** Available zone (free for allocation) */ |
#define ZONE_AVAILABLE 0x00 |
/** Zone is reserved (not available for allocation) */ |
#define ZONE_RESERVED 0x08 |
#define ZONE_RESERVED 0x08 |
/** Zone is used by firmware (not available for allocation) */ |
#define ZONE_FIRMWARE 0x10 |
#define ZONE_FIRMWARE 0x10 |
|
/** Currently there is no equivalent zone flags |
for frame flags */ |
#define FRAME_TO_ZONE_FLAGS(frame_flags) 0 |
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typedef struct { |
count_t refcount; /**< Tracking of shared frames */ |
uint8_t buddy_order; /**< Buddy system block order */ |
link_t buddy_link; /**< Link to the next free block inside |
one order */ |
void *parent; /**< If allocated by slab, this points there */ |
} frame_t; |
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typedef struct { |
pfn_t base; /**< Frame_no of the first frame |
in the frames array */ |
count_t count; /**< Size of zone */ |
count_t free_count; /**< Number of free frame_t |
structures */ |
count_t busy_count; /**< Number of busy frame_t |
structures */ |
zone_flags_t flags; /**< Type of the zone */ |
|
frame_t *frames; /**< Array of frame_t structures |
in this zone */ |
buddy_system_t *buddy_system; /**< Buddy system for the zone */ |
} zone_t; |
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/* |
* The zoneinfo.lock must be locked when accessing zoneinfo structure. |
* Some of the attributes in zone_t structures are 'read-only' |
*/ |
typedef struct { |
SPINLOCK_DECLARE(lock); |
count_t count; |
zone_t info[ZONES_MAX]; |
} zones_t; |
|
extern zones_t zones; |
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static inline uintptr_t PFN2ADDR(pfn_t frame) |
{ |
return (uintptr_t) (frame << FRAME_WIDTH); |
98,6 → 136,11 |
return (size_t) (frames << FRAME_WIDTH); |
} |
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static inline bool zone_flags_available(zone_flags_t flags) |
{ |
return ((flags & (ZONE_RESERVED | ZONE_FIRMWARE)) == 0); |
} |
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#define IS_BUDDY_ORDER_OK(index, order) \ |
((~(((unative_t) -1) << (order)) & (index)) == 0) |
#define IS_BUDDY_LEFT_BLOCK(zone, frame) \ |
117,6 → 160,7 |
extern void frame_free(uintptr_t); |
extern void frame_reference_add(pfn_t); |
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extern count_t find_zone(pfn_t frame, count_t count, count_t hint); |
extern count_t zone_create(pfn_t, count_t, pfn_t, zone_flags_t); |
extern void *frame_get_parent(pfn_t, count_t); |
extern void frame_set_parent(pfn_t, void *, count_t); |