BSD 4 release

[unix-history] / usr / src / sys / stand / saio.h

/*      saio.h  4.1     11/9/80 */

/*
* header file for standalone package
*/

/*
* io block: includes an
* inode, cells for the use of seek, etc,
* and a buffer.
*/
struct  iob {
       char    i_flgs;
       struct  inode i_ino;
       int     i_unit;
       daddr_t i_boff;
       daddr_t i_cyloff;
       off_t   i_offset;
       daddr_t i_bn;
       char    *i_ma;
       int     i_cc;
       char    i_buf[BSIZE];
};

#define F_READ  01
#define F_WRITE 02
#define F_ALLOC 04
#define F_FILE  010

/*
* dev switch
*/
struct devsw {
       char    *dv_name;
       int     (*dv_strategy)();
       int     (*dv_open)();
       int     (*dv_close)();
};

struct devsw devsw[];

/*
* request codes. Must be the same a F_XXX above
*/
#define READ    1
#define WRITE   2

#define NBUFS   4

char    b[NBUFS][BSIZE];
daddr_t blknos[NBUFS];

#define NFILES  4
struct  iob iob[NFILES];

#define PHYSUBA0        0x20006000
#define PHYSUMEM        0x2013e000

int     mbaact;

struct mba_info
{
       struct  mba_regs *mi_phys;      /* physical address of mba */
};