diff options
Diffstat (limited to 'include/linux/fd1772.h')
| -rw-r--r-- | include/linux/fd1772.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/include/linux/fd1772.h b/include/linux/fd1772.h new file mode 100644 index 000000000000..871d6e4c677e --- /dev/null +++ b/include/linux/fd1772.h @@ -0,0 +1,80 @@ +#ifndef _LINUX_FD1772REG_H +#define _LINUX_FD1772REG_H + +/* +** WD1772 stuff - originally from the M68K Linux + * Modified for Archimedes by Dave Gilbert (gilbertd@cs.man.ac.uk) + */ + +/* register codes */ + +#define FDC1772SELREG_STP (0x80) /* command/status register */ +#define FDC1772SELREG_TRA (0x82) /* track register */ +#define FDC1772SELREG_SEC (0x84) /* sector register */ +#define FDC1772SELREG_DTA (0x86) /* data register */ + +/* register names for FDC1772_READ/WRITE macros */ + +#define FDC1772REG_CMD 0 +#define FDC1772REG_STATUS 0 +#define FDC1772REG_TRACK 2 +#define FDC1772REG_SECTOR 4 +#define FDC1772REG_DATA 6 + +/* command opcodes */ + +#define FDC1772CMD_RESTORE (0x00) /* - */ +#define FDC1772CMD_SEEK (0x10) /* | */ +#define FDC1772CMD_STEP (0x20) /* | TYP 1 Commands */ +#define FDC1772CMD_STIN (0x40) /* | */ +#define FDC1772CMD_STOT (0x60) /* - */ +#define FDC1772CMD_RDSEC (0x80) /* - TYP 2 Commands */ +#define FDC1772CMD_WRSEC (0xa0) /* - " */ +#define FDC1772CMD_RDADR (0xc0) /* - */ +#define FDC1772CMD_RDTRA (0xe0) /* | TYP 3 Commands */ +#define FDC1772CMD_WRTRA (0xf0) /* - */ +#define FDC1772CMD_FORCI (0xd0) /* - TYP 4 Command */ + +/* command modifier bits */ + +#define FDC1772CMDADD_SR6 (0x00) /* step rate settings */ +#define FDC1772CMDADD_SR12 (0x01) +#define FDC1772CMDADD_SR2 (0x02) +#define FDC1772CMDADD_SR3 (0x03) +#define FDC1772CMDADD_V (0x04) /* verify */ +#define FDC1772CMDADD_H (0x08) /* wait for spin-up */ +#define FDC1772CMDADD_U (0x10) /* update track register */ +#define FDC1772CMDADD_M (0x10) /* multiple sector access */ +#define FDC1772CMDADD_E (0x04) /* head settling flag */ +#define FDC1772CMDADD_P (0x02) /* precompensation */ +#define FDC1772CMDADD_A0 (0x01) /* DAM flag */ + +/* status register bits */ + +#define FDC1772STAT_MOTORON (0x80) /* motor on */ +#define FDC1772STAT_WPROT (0x40) /* write protected (FDC1772CMD_WR*) */ +#define FDC1772STAT_SPINUP (0x20) /* motor speed stable (Type I) */ +#define FDC1772STAT_DELDAM (0x20) /* sector has deleted DAM (Type II+III) */ +#define FDC1772STAT_RECNF (0x10) /* record not found */ +#define FDC1772STAT_CRC (0x08) /* CRC error */ +#define FDC1772STAT_TR00 (0x04) /* Track 00 flag (Type I) */ +#define FDC1772STAT_LOST (0x04) /* Lost Data (Type II+III) */ +#define FDC1772STAT_IDX (0x02) /* Index status (Type I) */ +#define FDC1772STAT_DRQ (0x02) /* DRQ status (Type II+III) */ +#define FDC1772STAT_BUSY (0x01) /* FDC1772 is busy */ + + +/* PSG Port A Bit Nr 0 .. Side Sel .. 0 -> Side 1 1 -> Side 2 */ +#define DSKSIDE (0x01) + +#define DSKDRVNONE (0x06) +#define DSKDRV0 (0x02) +#define DSKDRV1 (0x04) + +/* step rates */ +#define FDC1772STEP_6 0x00 +#define FDC1772STEP_12 0x01 +#define FDC1772STEP_2 0x02 +#define FDC1772STEP_3 0x03 + +#endif |