| 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> |
| |
| 67,15 → 68,52 |
|---|
| |
| typedef uint8_t zone_flags_t; |
| |
| /** 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 |
| |
| 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; |
| |
| 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; |
| |
| /* |
| * 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; |
| |
| static inline uintptr_t PFN2ADDR(pfn_t frame) |
| { |
| return (uintptr_t) (frame << FRAME_WIDTH); |
| 98,6 → 136,11 |
|---|
| return (size_t) (frames << FRAME_WIDTH); |
| } |
| |
| static inline bool zone_flags_available(zone_flags_t flags) |
| { |
| return ((flags & (ZONE_RESERVED | ZONE_FIRMWARE)) == 0); |
| } |
| |
| #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); |
| |
| 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); |