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Annotation of 3BSD/sys/stand/saio.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * header file for standalone package
                      3:  */
                      4: 
                      5: /*
                      6:  * io block: includes an
                      7:  * inode, cells for the use of seek, etc,
                      8:  * and a buffer.
                      9:  */
                     10: struct iob {
                     11:        char    i_flgs;
                     12:        struct  inode i_ino;
                     13:        int     i_unit;
                     14:        daddr_t i_boff;
                     15:        daddr_t i_cyloff;
                     16:        off_t   i_offset;
                     17:        daddr_t i_bn;
                     18:        char    *i_ma;
                     19:        int     i_cc;
                     20:        char    i_buf[BSIZE];
                     21: };
                     22: 
                     23: #define F_READ 01
                     24: #define F_WRITE        02
                     25: #define F_ALLOC        04
                     26: #define F_FILE 010
                     27: 
                     28: /*
                     29:  * dev switch
                     30:  */
                     31: struct devsw {
                     32:        char    *dv_name;
                     33:        int     (*dv_strategy)();
                     34:        int     (*dv_open)();
                     35:        int     (*dv_close)();
                     36: };
                     37: 
                     38: struct devsw devsw[];
                     39: 
                     40: /*
                     41:  * request codes. Must be the same a F_XXX above
                     42:  */
                     43: #define        READ    1
                     44: #define        WRITE   2
                     45: 
                     46: #define        NBUFS   4
                     47: 
                     48: char   b[NBUFS][BSIZE];
                     49: daddr_t        blknos[NBUFS];
                     50: 
                     51: #define NFILES 4
                     52: struct iob iob[NFILES];
                     53: 
                     54: #define        PHYSUBA0        0x20006000
                     55: #define        PHYSMBA0        0x20010000
                     56: #define        PHYSMBA1        0x20012000
                     57: #define        PHYSUMEM        0x2013e000

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