Release 4.16 include/linux/amifdreg.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_AMIFDREG_H
#define _LINUX_AMIFDREG_H
/*
** 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 */
#endif /* _LINUX_AMIFDREG_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 206 | 99.52% | 1 | 50.00% |
| Greg Kroah-Hartman | 1 | 0.48% | 1 | 50.00% |
| Total | 207 | 100.00% | 2 | 100.00% |
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