Desktop/xinu_mips-1.0.2.tar/xinu_mips-1.0.2/include/device.h

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/* Embedded XINU, Copyright (C) 2007.  All rights reserved. */

/* Device table declarations */
#ifndef _DEVICE_H_
#define _DEVICE_H_

#include <kernel.h>

/* Device table entry */
typedef struct dentry
{
        ushort   num;                             
        char    *name;                            
        devcall (*init)   (struct dentry *, ...); 
        devcall (*open)   (struct dentry *, ...); 
        devcall (*close)  (struct dentry *, ...); 
        devcall (*read)   (struct dentry *, ...); 
        devcall (*write)  (struct dentry *, ...); 
        devcall (*seek)   (struct dentry *, ...); 
        devcall (*getc)   (struct dentry *, ...); 
        devcall (*putc)   (struct dentry *, ...); 
        devcall (*control)(struct dentry *, ...); 
        void    *csr;                             
        uchar   inmask;                           
        uchar   outmask;                          
        void    (*inintr)(void);                  
        void    (*outintr)(void);                 
        void    *controlblk;                      
        ushort  minor;                            
} device;

extern struct dentry devtab[];                /* one entry per device     */

/* Device name definitions */
#define SERIAL0  0                 
#define SERIAL1  1                 
#define CONSOLE  2                 
#define TTY0     2                 
#define TTY1     3                 
/* Control block sizes */
#define NUART    2                 
#define NTTY     2                 
#define NWIN     0                 
#define NFRAMBUF 0                 
/* Number of devices */
#define NDEVS ( NUART + NTTY + NFRAMBUF + NWIN )

#define isbaddev(f)  ( (ushort)(f)>=NDEVS )

/* Standard driver functions */
devcall close(ushort);
devcall control(ushort, ushort, long, long);
devcall getc(ushort);
devcall open(ushort, ...);
devcall putc(ushort, char);
devcall read(ushort, void *, long);
devcall write(ushort, void *, long);
devcall seek(ushort, long);

#endif /* _DEVICE_H_ */

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