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  • kernel/generic/include/mm/frame.h

    r9d58539 rf72906c  
    3939#include <typedefs.h>
    4040#include <trace.h>
     41#include <adt/bitmap.h>
    4142#include <adt/list.h>
    42 #include <mm/buddy.h>
    4343#include <synch/spinlock.h>
    4444#include <arch/mm/page.h>
     
    5050typedef uint8_t frame_flags_t;
    5151
    52 #define FRAME_NONE        0x0
    53 /** Convert the frame address to kernel VA. */
    54 #define FRAME_KA          0x1
     52#define FRAME_NONE        0x00
    5553/** Do not panic and do not sleep on failure. */
    56 #define FRAME_ATOMIC      0x2
     54#define FRAME_ATOMIC      0x01
    5755/** Do not start reclaiming when no free memory. */
    58 #define FRAME_NO_RECLAIM  0x4
     56#define FRAME_NO_RECLAIM  0x02
    5957/** Do not reserve / unreserve memory. */
    60 #define FRAME_NO_RESERVE  0x8
     58#define FRAME_NO_RESERVE  0x04
    6159/** Allocate a frame which can be identity-mapped. */
    62 #define FRAME_LOWMEM      0x10
     60#define FRAME_LOWMEM      0x08
    6361/** Allocate a frame which cannot be identity-mapped. */
    64 #define FRAME_HIGHMEM     0x20
     62#define FRAME_HIGHMEM     0x10
    6563
    6664typedef uint8_t zone_flags_t;
    6765
    68 #define ZONE_NONE       0x0
     66#define ZONE_NONE       0x00
    6967/** Available zone (free for allocation) */
    70 #define ZONE_AVAILABLE  0x1
     68#define ZONE_AVAILABLE  0x01
    7169/** Zone is reserved (not available for allocation) */
    72 #define ZONE_RESERVED   0x2
     70#define ZONE_RESERVED   0x02
    7371/** Zone is used by firmware (not available for allocation) */
    74 #define ZONE_FIRMWARE   0x4
     72#define ZONE_FIRMWARE   0x04
    7573/** Zone contains memory that can be identity-mapped */
    76 #define ZONE_LOWMEM     0x8
     74#define ZONE_LOWMEM     0x08
    7775/** Zone contains memory that cannot be identity-mapped */
    78 #define ZONE_HIGHMEM    0x10
     76#define ZONE_HIGHMEM    0x10
    7977
    8078/** Mask of zone bits that must be matched exactly. */
    81 #define ZONE_EF_MASK    0x7
     79#define ZONE_EF_MASK  0x07
    8280
    83 #define FRAME_TO_ZONE_FLAGS(ff) \
     81#define FRAME_TO_ZONE_FLAGS(ff) \
    8482        ((((ff) & FRAME_LOWMEM) ? ZONE_LOWMEM : \
    8583            (((ff) & FRAME_HIGHMEM) ? ZONE_HIGHMEM : \
    8684            ZONE_LOWMEM /* | ZONE_HIGHMEM */)) | \
    87             ZONE_AVAILABLE) 
     85            ZONE_AVAILABLE)
    8886
    8987#define ZONE_FLAGS_MATCH(zf, f) \
     
    9290
    9391typedef struct {
    94         size_t refcount;      /**< Tracking of shared frames */
    95         link_t buddy_link;    /**< Link to the next free block inside
    96                                    one order */
    97         void *parent;         /**< If allocated by slab, this points there */
    98         uint8_t buddy_order;  /**< Buddy system block order */
     92        size_t refcount;  /**< Tracking of shared frames */
     93        void *parent;     /**< If allocated by slab, this points there */
    9994} frame_t;
    10095
    10196typedef struct {
    102         pfn_t base;                    /**< Frame_no of the first frame
    103                                             in the frames array */
    104         size_t count;                  /**< Size of zone */
    105         size_t free_count;             /**< Number of free frame_t
    106                                             structures */
    107         size_t busy_count;             /**< Number of busy frame_t
    108                                             structures */
    109         zone_flags_t flags;            /**< Type of the zone */
     97        /** Frame_no of the first frame in the frames array */
     98        pfn_t base;
    11099       
    111         frame_t *frames;               /**< Array of frame_t structures
    112                                             in this zone */
    113         buddy_system_t *buddy_system;  /**< Buddy system for the zone */
     100        /** Size of zone */
     101        size_t count;
     102       
     103        /** Number of free frame_t structures */
     104        size_t free_count;
     105       
     106        /** Number of busy frame_t structures */
     107        size_t busy_count;
     108       
     109        /** Type of the zone */
     110        zone_flags_t flags;
     111       
     112        /** Frame bitmap */
     113        bitmap_t bitmap;
     114       
     115        /** Array of frame_t structures in this zone */
     116        frame_t *frames;
    114117} zone_t;
    115118
     
    126129extern zones_t zones;
    127130
    128 NO_TRACE static inline uintptr_t PFN2ADDR(pfn_t frame)
    129 {
    130         return (uintptr_t) (frame << FRAME_WIDTH);
    131 }
    132 
    133 NO_TRACE static inline pfn_t ADDR2PFN(uintptr_t addr)
    134 {
    135         return (pfn_t) (addr >> FRAME_WIDTH);
    136 }
    137 
    138 NO_TRACE static inline size_t SIZE2FRAMES(size_t size)
    139 {
    140         if (!size)
    141                 return 0;
    142         return (size_t) ((size - 1) >> FRAME_WIDTH) + 1;
    143 }
    144 
    145 NO_TRACE static inline size_t FRAMES2SIZE(size_t frames)
    146 {
    147         return (size_t) (frames << FRAME_WIDTH);
    148 }
    149 
    150 #define IS_BUDDY_ORDER_OK(index, order) \
    151     ((~(((sysarg_t) -1) << (order)) & (index)) == 0)
    152 #define IS_BUDDY_LEFT_BLOCK(zone, frame) \
    153     (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)
    154 #define IS_BUDDY_RIGHT_BLOCK(zone, frame) \
    155     (((frame_index((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)
    156 #define IS_BUDDY_LEFT_BLOCK_ABS(zone, frame) \
    157     (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 0)
    158 #define IS_BUDDY_RIGHT_BLOCK_ABS(zone, frame) \
    159     (((frame_index_abs((zone), (frame)) >> (frame)->buddy_order) & 0x1) == 1)
    160 
    161131extern void frame_init(void);
    162132extern bool frame_adjust_zone_bounds(bool, uintptr_t *, size_t *);
    163 extern void *frame_alloc_generic(uint8_t, frame_flags_t, size_t *);
    164 extern void *frame_alloc(uint8_t, frame_flags_t);
    165 extern void *frame_alloc_noreserve(uint8_t, frame_flags_t);
    166 extern void frame_free_generic(uintptr_t, frame_flags_t);
    167 extern void frame_free(uintptr_t);
    168 extern void frame_free_noreserve(uintptr_t);
     133extern uintptr_t frame_alloc_generic(size_t, frame_flags_t, uintptr_t,
     134    size_t *);
     135extern uintptr_t frame_alloc(size_t, frame_flags_t, uintptr_t);
     136extern void frame_free_generic(uintptr_t, size_t, frame_flags_t);
     137extern void frame_free(uintptr_t, size_t);
     138extern void frame_free_noreserve(uintptr_t, size_t);
    169139extern void frame_reference_add(pfn_t);
    170140extern size_t frame_total_free_get(void);
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