usr/src/sys/vax/uba/rxreg.h

/*      rxreg.h 4.3     83/02/21        */

/*
 * RX02 registers
 */
struct rxdevice {
        short   rxcs;           /* control/status register */
        short   rxdb;           /* data buffer register */
};

/*
 * RX211 Command and Status Register (RX2CS)
 */
#define RX_DRV0         0x0000  /* select drive 0 */
#define RX_DRV1         0x0010  /* select drive 1 */
#define RX_DONE         0x0020  /* function complete */
#define RX_INTR         0x0040  /* interrupt enable */
#define RX_TREQ         0x0080  /* transfer request (data only) */
#define RX_SDEN         0x0000  /* single density */
#define RX_DDEN         0x0100  /* double density */
#define RX_EXT          0x3000  /* extended address bits */
#define RX_INIT         0x4000  /* initialize RX211 interface */
#define RX_ERR          0x8000  /* general error bit */

/*
 * RX211 control function bits (0-3 of RX2CS)
 */
#define RX_FILL         0x0001  /* fill the buffer */
#define RX_EMPTY        0x0003  /* empty the buffer */
#define RX_WRITE        0x0005  /* write the buffer to disk */
#define RX_READ         0x0007  /* read a disk sector to the buffer */
#define RX_FORMAT       0x0009  /* set the media density (format) */
#define RX_RDSTAT       0x000b  /* read the disk status */
#define RX_WDDS         0x000d  /* write a deleted-data sector */
#define RX_RDERR        0x000f  /* read the error registers */

#define RXCS_BITS \
"\20\20RX_ERR\17RX_INIT\11RX_DDEN\10RX_TREQ\7RX_IE\6RX_DONE\5RX_DRV1"

/*
 * RX211 Error and Status Register (RX2ES) --
 * information is located in RX2DB after completion of function.
 * The READY bit's value is available only after a "read status".
 */
#define RXES_CRCERR     0x0001  /* CRC error (data read error) */
#define RXES_IDONE      0x0004  /* reinitialization complete */
#define RXES_DENERR     0x0010  /* density error (mismatch) */
#define RXES_DDMARK     0x0040  /* deleted-data mark */
#define RXES_READY      0x0080  /* drive is ready */

#define RXES_BITS \
"\20\14RXES_NXM\13RXES_WCOF\11RXES_DRV1\10RXES_RDY\7RXES_DDMK\6RXES_DDEN\5\
RXES_DNER\4RXES_ACLO\3RXES_ID\1RXES_CRC"

/*
 * Ioctl commands, move to dkio.h later
 */
#define RXIOC_FORMAT    (('d'<<8)|1)    /* format the disk */
#define RXIOC_WDDS      (('d'<<8)|2)    /* write `deleted data' mark */
                                        /* on next sector */
#define RXIOC_RDDSMK    (('d'<<8)|3)    /* did last read sector contain */
                                        /* `deleted data'?*/

#ifdef RXDEFERR
/*
 * Table of values for definitive error code (rxxt[0] & 0xff)
 */
struct rxdeferr {
        short   errval;
        char    *errmsg;
} rxdeferr[] = {
        { 0010, "Can't find home on drive 0" },
        { 0020, "Can't find home on drive 1" },
        { 0040, "Bad track number requested" },
        { 0050, "Home found too soon" },
        { 0070, "Can't find desired sector" },
        { 0110, "No SEP clock seen" },
        { 0120, "No preamble found" },
        { 0130, "Preamble, but no ID mark" },
        { 0140, "Header CRC error"},
        { 0150, "Track addr wrong in header" },
        { 0160, "Too many tries for ID AM" },
        { 0170, "No data AM found" },
        { 0200, "Data CRC error" },
        { 0220, "Maintenance test failure" },
        { 0230, "Word count overflow" },
        { 0240, "Density error" },
        { 0250, "Set-density protocol bad" },
        { 0,    "Undefined error code" }
};
#endif