diff options
Diffstat (limited to 'drivers/block')
-rw-r--r-- | drivers/block/ataflop.c | 83 |
1 files changed, 81 insertions, 2 deletions
diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c index dfb2c2622e5a..17df631c5d85 100644 --- a/drivers/block/ataflop.c +++ b/drivers/block/ataflop.c @@ -71,8 +71,6 @@ #include <linux/completion.h> #include <linux/wait.h> -#include <asm/atafd.h> -#include <asm/atafdreg.h> #include <asm/atariints.h> #include <asm/atari_stdma.h> #include <asm/atari_stram.h> @@ -85,6 +83,87 @@ static DEFINE_MUTEX(ataflop_mutex); static struct request *fd_request; static int fdc_queue; +/* + * WD1772 stuff + */ + +/* register codes */ + +#define FDCSELREG_STP (0x80) /* command/status register */ +#define FDCSELREG_TRA (0x82) /* track register */ +#define FDCSELREG_SEC (0x84) /* sector register */ +#define FDCSELREG_DTA (0x86) /* data register */ + +/* register names for FDC_READ/WRITE macros */ + +#define FDCREG_CMD 0 +#define FDCREG_STATUS 0 +#define FDCREG_TRACK 2 +#define FDCREG_SECTOR 4 +#define FDCREG_DATA 6 + +/* command opcodes */ + +#define FDCCMD_RESTORE (0x00) /* - */ +#define FDCCMD_SEEK (0x10) /* | */ +#define FDCCMD_STEP (0x20) /* | TYP 1 Commands */ +#define FDCCMD_STIN (0x40) /* | */ +#define FDCCMD_STOT (0x60) /* - */ +#define FDCCMD_RDSEC (0x80) /* - TYP 2 Commands */ +#define FDCCMD_WRSEC (0xa0) /* - " */ +#define FDCCMD_RDADR (0xc0) /* - */ +#define FDCCMD_RDTRA (0xe0) /* | TYP 3 Commands */ +#define FDCCMD_WRTRA (0xf0) /* - */ +#define FDCCMD_FORCI (0xd0) /* - TYP 4 Command */ + +/* command modifier bits */ + +#define FDCCMDADD_SR6 (0x00) /* step rate settings */ +#define FDCCMDADD_SR12 (0x01) +#define FDCCMDADD_SR2 (0x02) +#define FDCCMDADD_SR3 (0x03) +#define FDCCMDADD_V (0x04) /* verify */ +#define FDCCMDADD_H (0x08) /* wait for spin-up */ +#define FDCCMDADD_U (0x10) /* update track register */ +#define FDCCMDADD_M (0x10) /* multiple sector access */ +#define FDCCMDADD_E (0x04) /* head settling flag */ +#define FDCCMDADD_P (0x02) /* precompensation off */ +#define FDCCMDADD_A0 (0x01) /* DAM flag */ + +/* status register bits */ + +#define FDCSTAT_MOTORON (0x80) /* motor on */ +#define FDCSTAT_WPROT (0x40) /* write protected (FDCCMD_WR*) */ +#define FDCSTAT_SPINUP (0x20) /* motor speed stable (Type I) */ +#define FDCSTAT_DELDAM (0x20) /* sector has deleted DAM (Type II+III) */ +#define FDCSTAT_RECNF (0x10) /* record not found */ +#define FDCSTAT_CRC (0x08) /* CRC error */ +#define FDCSTAT_TR00 (0x04) /* Track 00 flag (Type I) */ +#define FDCSTAT_LOST (0x04) /* Lost Data (Type II+III) */ +#define FDCSTAT_IDX (0x02) /* Index status (Type I) */ +#define FDCSTAT_DRQ (0x02) /* DRQ status (Type II+III) */ +#define FDCSTAT_BUSY (0x01) /* FDC 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 FDCSTEP_6 0x00 +#define FDCSTEP_12 0x01 +#define FDCSTEP_2 0x02 +#define FDCSTEP_3 0x03 + +struct atari_format_descr { + int track; /* to be formatted */ + int head; /* "" "" */ + int sect_offset; /* offset of first sector */ +}; + /* Disk types: DD, HD, ED */ static struct atari_disk_type { const char *name; |