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Annotation of 42BSD/sys/vaxuba/rlreg.h, revision 1.1.1.1

1.1       root        1: /*     rlreg.h 6.1     83/07/29        */
                      2: 
                      3: struct rldevice {
                      4:        short   rlcs;           /* control status */
                      5:        u_short rlba;           /* bus address */
                      6:        union {                 /* disk address */
                      7:                u_short seek;           /* disk seek address */
                      8:                u_short rw;             /* disk read/write address */
                      9:                u_short getstat;        /* get disk status command */
                     10:        } rlda;
                     11:        union {                 /* multi-purpose register */
                     12:                u_short getstat;        /* get status */
                     13:                u_short readhdr;        /* read header */
                     14:                u_short rw;             /* read/write word count */
                     15:        } rlmp;
                     16: };
                     17: 
                     18: #define        NRLCYLN         512     /* number of cylinders per disk */
                     19: #define NRLTRKS                2       /* number of tracks per cylinder */
                     20: #define NRLSECT                40      /* number of sectors per track */
                     21: #define NRLBPSC                256     /* bytes per sector */
                     22: 
                     23: /* rlcs */
                     24: /* commands */
                     25: #define RL_NOOP                0000000         /* no-operation */
                     26: #define RL_WCHECK      0000002         /* write check */
                     27: #define RL_GETSTAT     0000004         /* get status */
                     28: #define        RL_SEEK         0000006         /* seek */
                     29: #define        RL_RHDR         0000010         /* read header */
                     30: #define        RL_WRITE        0000012         /* write data */
                     31: #define        RL_READ         0000014         /* read data */
                     32: #define        RL_RDNCK        0000016         /* read data without hdr check */
                     33: 
                     34: #define RL_DRDY                0000001         /* When set indicates drive ready */
                     35: #define RL_BAE         0000060         /* UNIBUS address bits 16 & 17 */
                     36: #define        RL_IE           0000100         /* interrupt enable */
                     37: #define        RL_CRDY         0000200         /* controller ready */
                     38: #define RL_DS0         0000400         /* drive select 0 */
                     39: #define RL_DS1         0001000         /* drive select 1 */
                     40: #define        RL_OPI          0002000         /* operation incomplete */
                     41: #define        RL_DCRC         0004000         /* CRC error occurred */
                     42: #define        RL_DLT          0010000         /* data late or header not found */
                     43: #define        RL_NXM          0020000         /* non-existant memory */
                     44: #define        RL_DE           0040000         /* selected drive flagged an error */
                     45: #define        RL_ERR          0100000         /* composite error */
                     46: 
                     47: #define        RL_DCRDY        (RL_DRDY | RL_CRDY)
                     48: 
                     49: #define        RLCS_BITS \
                     50: "\10\20ERR\17DE\16NXM\15DLT\14DCRC\13OPI\1DRDY"
                     51: 
                     52: /* da_seek */
                     53: #define        RLDA_LOW        0000001         /* lower cylinder seek */
                     54: #define        RLDA_HGH        0000005         /* higher cylinder seek */
                     55: #define        RLDA_HSU        0000000         /* upper head select */
                     56: #define        RLDA_HSL        0000020         /* lower head select */
                     57: #define        RLDA_CA         0177600         /* cylinder address */
                     58: 
                     59: /* da_rw */
                     60: #define        RLDA_SA         0000077         /* sector address */
                     61: #define RLDA_HST       0000000         /* upper head select */
                     62: #define        RLDA_HSB        0000100         /* lower head select */
                     63: 
                     64: /* da_getstat */
                     65: 
                     66: #define        RL_GSTAT        0000003         /* Get status */
                     67: #define        RL_RESET        0000013         /* get status with reset */
                     68: 
                     69: /* mp_getstat */
                     70: #define        RLMP_STA        0000001         /* drive state: load cartridge */
                     71: #define        RLMP_STB        0000002         /* drive state: brush cycle */
                     72: #define        RLMP_STC        0000004         /* drive state: seek */
                     73: #define        RLMP_BH         0000010         /* set when brushes are home */
                     74: #define        RLMP_HO         0000020         /* set when brushes over the disk */
                     75: #define        RLMP_CO         0000040         /* set when cover open */
                     76: #define        RLMP_HS         0000100         /* indicates selected head:
                     77:                                                0 upper head
                     78:                                                1 lower head */
                     79: #define        RLMP_DT         0000200         /* indicates drive type:
                     80:                                                0 RL01
                     81:                                                1 RL02 */
                     82: #define        RLMP_DSE        0000400         /* set on multiple drive selection */
                     83: #define        RLMP_VC         0001000         /* set on pack mounted and spining */
                     84: #define        RLMP_WGE        0002000         /* write gate error */
                     85: #define        RLMP_SPE        0004000         /* spin speed error */
                     86: #define        RLMP_SKTO       0010000         /*\* seek time out error */
                     87: #define RLMP_WL                0020000         /* set on protected drive */
                     88: #define RLMP_CHE       0040000         /* current head error */
                     89: #define RLMP_WDE       0100000         /* write data error */
                     90: 
                     91: /* mp_rhc */
                     92: #define        RLMP_SA         0000077         /* sector address */
                     93: #define        RLMP_CA         0177600         /* cylinder address */
                     94: 
                     95: /* check these bits after a get status and reset */
                     96: #define RLMP_STATUS (RLMP_WDE|RLMP_CHE|RLMP_SKTO|RLMP_SPE|RLMP_WGE \
                     97:        |RLMP_VC|RLMP_DSE|RLMP_CO|RLMP_HO|RLMP_BH|RLMP_STC|RLMP_STB|RLMP_STA)
                     98: 
                     99: /* these are the bits that should be on in the above check */
                    100: #define RLMP_STATOK (RLMP_HO|RLMP_BH|RLMP_STC|RLMP_STA)
                    101: 
                    102: /* mp_rw */
                    103: #define        RLMP_WC         0017777         /* word count 2's complement */
                    104: 
                    105: #define        RLER_BITS \
                    106: "\10\20WDE\17CHE\16WL\15SKTO\14SPE\13WGE\12VC\11DSE\
                    107: \10DT\7HS\6CO\5HO\4BH\3STC\2STB\1STA"

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