diff options
Diffstat (limited to 'drivers/block/amiflop.c')
| -rw-r--r-- | drivers/block/amiflop.c | 123 |
1 files changed, 120 insertions, 3 deletions
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c index 3aaf6af3ec23..a7d6e6a9b12f 100644 --- a/drivers/block/amiflop.c +++ b/drivers/block/amiflop.c @@ -61,10 +61,8 @@ #include <linux/delay.h> #include <linux/init.h> #include <linux/mutex.h> -#include <linux/amifdreg.h> -#include <linux/amifd.h> #include <linux/fs.h> -#include <linux/blkdev.h> +#include <linux/blk-mq.h> #include <linux/elevator.h> #include <linux/interrupt.h> #include <linux/platform_device.h> @@ -87,6 +85,125 @@ */ /* + * CIAAPRA bits (read only) + */ + +#define DSKRDY (0x1<<5) /* disk ready when low */ +#define DSKTRACK0 (0x1<<4) /* head at track zero when low */ +#define DSKPROT (0x1<<3) /* disk protected when low */ +#define DSKCHANGE (0x1<<2) /* low when disk removed */ + +/* + * CIAAPRB bits (read/write) + */ + +#define DSKMOTOR (0x1<<7) /* motor on when low */ +#define DSKSEL3 (0x1<<6) /* select drive 3 when low */ +#define DSKSEL2 (0x1<<5) /* select drive 2 when low */ +#define DSKSEL1 (0x1<<4) /* select drive 1 when low */ +#define DSKSEL0 (0x1<<3) /* select drive 0 when low */ +#define DSKSIDE (0x1<<2) /* side selection: 0 = upper, 1 = lower */ +#define DSKDIREC (0x1<<1) /* step direction: 0=in, 1=out (to trk 0) */ +#define DSKSTEP (0x1) /* pulse low to step head 1 track */ + +/* + * DSKBYTR bits (read only) + */ + +#define DSKBYT (1<<15) /* register contains valid byte when set */ +#define DMAON (1<<14) /* disk DMA enabled */ +#define DISKWRITE (1<<13) /* disk write bit in DSKLEN enabled */ +#define WORDEQUAL (1<<12) /* DSKSYNC register match when true */ +/* bits 7-0 are data */ + +/* + * ADKCON/ADKCONR bits + */ + +#ifndef SETCLR +#define ADK_SETCLR (1<<15) /* control bit */ +#endif +#define ADK_PRECOMP1 (1<<14) /* precompensation selection */ +#define ADK_PRECOMP0 (1<<13) /* 00=none, 01=140ns, 10=280ns, 11=500ns */ +#define ADK_MFMPREC (1<<12) /* 0=GCR precomp., 1=MFM precomp. */ +#define ADK_WORDSYNC (1<<10) /* enable DSKSYNC auto DMA */ +#define ADK_MSBSYNC (1<<9) /* when 1, enable sync on MSbit (for GCR) */ +#define ADK_FAST (1<<8) /* bit cell: 0=2us (GCR), 1=1us (MFM) */ + +/* + * DSKLEN bits + */ + +#define DSKLEN_DMAEN (1<<15) +#define DSKLEN_WRITE (1<<14) + +/* + * INTENA/INTREQ bits + */ + +#define DSKINDEX (0x1<<4) /* DSKINDEX bit */ + +/* + * Misc + */ + +#define MFM_SYNC 0x4489 /* standard MFM sync value */ + +/* Values for FD_COMMAND */ +#define FD_RECALIBRATE 0x07 /* move to track 0 */ +#define FD_SEEK 0x0F /* seek track */ +#define FD_READ 0xE6 /* read with MT, MFM, SKip deleted */ +#define FD_WRITE 0xC5 /* write with MT, MFM */ +#define FD_SENSEI 0x08 /* Sense Interrupt Status */ +#define FD_SPECIFY 0x03 /* specify HUT etc */ +#define FD_FORMAT 0x4D /* format one track */ +#define FD_VERSION 0x10 /* get version code */ +#define FD_CONFIGURE 0x13 /* configure FIFO operation */ +#define FD_PERPENDICULAR 0x12 /* perpendicular r/w mode */ + +#define FD_MAX_UNITS 4 /* Max. Number of drives */ +#define FLOPPY_MAX_SECTORS 22 /* Max. Number of sectors per track */ + +struct fd_data_type { + char *name; /* description of data type */ + int sects; /* sectors per track */ + int (*read_fkt)(int); /* read whole track */ + void (*write_fkt)(int); /* write whole track */ +}; + +struct fd_drive_type { + unsigned long code; /* code returned from drive */ + char *name; /* description of drive */ + unsigned int tracks; /* number of tracks */ + unsigned int heads; /* number of heads */ + unsigned int read_size; /* raw read size for one track */ + unsigned int write_size; /* raw write size for one track */ + unsigned int sect_mult; /* sectors and gap multiplier (HD = 2) */ + unsigned int precomp1; /* start track for precomp 1 */ + unsigned int precomp2; /* start track for precomp 2 */ + unsigned int step_delay; /* time (in ms) for delay after step */ + unsigned int settle_time; /* time to settle after dir change */ + unsigned int side_time; /* time needed to change sides */ +}; + +struct amiga_floppy_struct { + struct fd_drive_type *type; /* type of floppy for this unit */ + struct fd_data_type *dtype; /* type of floppy for this unit */ + int track; /* current track (-1 == unknown) */ + unsigned char *trackbuf; /* current track (kmaloc()'d */ + + int blocks; /* total # blocks on disk */ + + int changed; /* true when not known */ + int disk; /* disk in drive (-1 == unknown) */ + int motor; /* true when motor is at speed */ + int busy; /* true when drive is active */ + int dirty; /* true when trackbuf is not on disk */ + int status; /* current error code for unit */ + struct gendisk *gendisk; +}; + +/* * Error codes */ #define FD_OK 0 /* operation succeeded */ |