dol/src/dol/visitor/cell/lib/spu/Fifo.h

   1 #ifndef _FIFO_H_
   2 #define _FIFO_H_
   3
   4 #include <stdio.h>
   5 #include <string.h>
   6
   7 #include "../constant.h"
   8
   9 #include "../lib/malloc_align.h"
  10 #include "../lib/free_align.h"
  11
  12 class Fifo {
  13     public:
  14         Fifo(unsigned size);
  15         virtual ~Fifo();
  16
  17                 // Read / Write
  18         virtual unsigned read(void *destination, unsigned len);
  19         virtual unsigned write(const void *source, unsigned len);
  20
  21                 // Buffer functions
  22                 virtual unsigned used() const;
  23         virtual unsigned unused() const;
  24         virtual unsigned size() const;
  25
  26                 // DMA functions
  27         virtual char *getQueuePointer();
  28         virtual void dmaRead(unsigned len);
  29         virtual unsigned dmaStart();
  30         virtual bool dmaAllowed();
  31
  32             // Global Variables
  33         unsigned _inTail;
  34
  35     protected:
  36         char *_buffer;         // Buffer pointer
  37
  38         unsigned _tail;        // Pointer to the tail
  39
  40                 unsigned _pos;         // Amount used
  41         unsigned _size;        // Size of the buffer
  42
  43                 unsigned _blocked;     // Number of blocking necessary
  44         bool _activeDMA;       // Active DMA?
  45 };
  46
  47 #endif