sh7722gfx.h

Linux操作系统的著名硬件加速绘图API软件。可以利用网卡提供的硬件加速功能完成绘图

#ifndef __SH7722GFX_H__
#define __SH7722GFX_H__

#include <asm/types.h>


#define SH7722GFX_BUFFER_WORDS  0x1f000      /* Number of 32bit words in display list (ring buffer). */
#define SH7722GFX_SHARED_MAGIC  0x77220001   /* Increase if binary compatibility is broken. */


typedef volatile struct {
     __u32          buffer[SH7722GFX_BUFFER_WORDS];


     int            hw_start;
     int            hw_end;

     int            hw_running;


     int            next_start;
     int            next_end;

     int            next_valid;


     unsigned long  buffer_phys;

     unsigned int   num_words;
     unsigned int   num_starts;
     unsigned int   num_done;
     unsigned int   num_interrupts;
     unsigned int   num_wait_idle;
     unsigned int   num_wait_next;
     unsigned int   num_idle;

     __u32          magic;
} SH7722GfxSharedArea;


typedef struct {
     __u32          address;  /* in */
     __u32          value;    /* in/out */
} SH7722Register;


/* Just initialization and synchronization.
 * Hardware is started from user space via MMIO to DMA registers. */
#define SH7722GFX_IOCTL_RESET      _IO ( 'G', 0 )
#define SH7722GFX_IOCTL_WAIT_IDLE  _IO ( 'G', 1 )
#define SH7722GFX_IOCTL_WAIT_NEXT  _IO ( 'G', 2 )


/* Access limited to BEU, LCDC, VOU and JPU. */
#define SH7722GFX_IOCTL_SETREG32   _IOW( 'g', 0, SH7722Register )
#define SH7722GFX_IOCTL_GETREG32   _IOR( 'g', 1, SH7722Register )


#endif