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fdreg.h revision 1.7
      1  1.7   pk /*	$NetBSD: fdreg.h,v 1.7 2000/01/17 16:57:15 pk Exp $	*/
      2  1.1   pk 
      3  1.1   pk /*-
      4  1.1   pk  * Copyright (c) 1991 The Regents of the University of California.
      5  1.1   pk  * All rights reserved.
      6  1.1   pk  *
      7  1.1   pk  * Redistribution and use in source and binary forms, with or without
      8  1.1   pk  * modification, are permitted provided that the following conditions
      9  1.1   pk  * are met:
     10  1.1   pk  * 1. Redistributions of source code must retain the above copyright
     11  1.1   pk  *    notice, this list of conditions and the following disclaimer.
     12  1.1   pk  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.1   pk  *    notice, this list of conditions and the following disclaimer in the
     14  1.1   pk  *    documentation and/or other materials provided with the distribution.
     15  1.1   pk  * 3. All advertising materials mentioning features or use of this software
     16  1.1   pk  *    must display the following acknowledgement:
     17  1.1   pk  *	This product includes software developed by the University of
     18  1.1   pk  *	California, Berkeley and its contributors.
     19  1.1   pk  * 4. Neither the name of the University nor the names of its contributors
     20  1.1   pk  *    may be used to endorse or promote products derived from this software
     21  1.1   pk  *    without specific prior written permission.
     22  1.1   pk  *
     23  1.1   pk  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  1.1   pk  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  1.1   pk  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  1.1   pk  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  1.1   pk  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  1.1   pk  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  1.1   pk  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  1.1   pk  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  1.1   pk  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  1.1   pk  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  1.1   pk  * SUCH DAMAGE.
     34  1.1   pk  *
     35  1.1   pk  *	@(#)fdreg.h	7.1 (Berkeley) 5/9/91
     36  1.1   pk  */
     37  1.1   pk 
     38  1.1   pk /*
     39  1.1   pk  * AT floppy controller registers and bitfields
     40  1.1   pk  */
     41  1.1   pk 
     42  1.1   pk /* uses NEC765 controller */
     43  1.4  cgd #include <dev/ic/nec765reg.h>
     44  1.1   pk 
     45  1.7   pk /*
     46  1.7   pk  * Register offsets for the 82077 controller.
     47  1.7   pk  */
     48  1.7   pk #define FDREG77_STATUSA	0
     49  1.7   pk #define FDREG77_STATUSB	1
     50  1.7   pk #define FDREG77_DOR	2		/* Digital Output Register (R/W) */
     51  1.7   pk #define FDREG77_TDR	3		/* Tape Control Register (R/W) */
     52  1.7   pk #define FDREG77_MSR	4		/* Main Status Register (R) */
     53  1.7   pk #define FDREG77_DRS	4		/* Data Rate Select Register (W) */
     54  1.7   pk #define FDREG77_FIFO	5		/* Data (FIFO) register (R/W) */
     55  1.7   pk #define FDREG77_DIR	7		/* Digital Input Register (R) */
     56  1.7   pk #define FDREG77_CCR	7		/* Configuration Control (W) */
     57  1.7   pk 
     58  1.7   pk /*
     59  1.7   pk  * Register offsets for the 82077 controller.
     60  1.7   pk  */
     61  1.7   pk #define FDREG72_MSR	0		/* Main Status Register (R) */
     62  1.7   pk #define FDREG72_DRS	0		/* Data Rate Select Register (W) */
     63  1.7   pk #define FDREG72_FIFO	1		/* Data (FIFO) register (R/W) */
     64  1.7   pk 
     65  1.1   pk 
     66  1.2   pk /* Data Select Register bits */
     67  1.2   pk #define DRS_RESET	0x80
     68  1.2   pk #define DRS_POWER	0x40
     69  1.2   pk #define DRS_PLL		0x20
     70  1.2   pk #define	FDC_500KBPS	0x00		/*   500KBPS MFM drive transfer rate */
     71  1.2   pk #define	FDC_300KBPS	0x01		/*   300KBPS MFM drive transfer rate */
     72  1.2   pk #define	FDC_250KBPS	0x02		/*   250KBPS MFM drive transfer rate */
     73  1.2   pk #define	FDC_125KBPS	0x03		/*   125KBPS  FM drive transfer rate */
     74  1.2   pk 
     75  1.6   pk /* Digital Output Register bits (modified on suns) */
     76  1.6   pk #define	FDO_DS		0x01		/*  floppy device select (neg) */
     77  1.6   pk #define	FDO_FRST	0x04		/*  floppy controller reset (neg) */
     78  1.1   pk #define	FDO_FDMAEN	0x08		/*  enable floppy DMA and Interrupt */
     79  1.6   pk #define	FDO_MOEN(n)	((1 << n) << 4)	/* motor enable */
     80  1.6   pk #define FDO_DEN		0x40		/* Density select */
     81  1.6   pk #define FDO_EJ		0x80		/* Eject disk */
     82  1.1   pk 
     83  1.1   pk #define	FDI_DCHG	0x80		/*   diskette has been changed */
     84  1.1   pk 
     85  1.1   pk /* XXX - find a place for these... */
     86  1.1   pk #define NE7CMD_CFG		0x13
     87  1.1   pk #define CFG_EIS			0x40
     88  1.1   pk #define CFG_EFIFO		0x20
     89  1.1   pk #define CFG_POLL		0x10
     90  1.2   pk #define CFG_THRHLD_MASK		0x0f
     91  1.1   pk 
     92  1.1   pk #define NE7CMD_LOCK		0x14
     93  1.1   pk #define CFG_LOCK		0x80
     94  1.1   pk 
     95  1.1   pk #define NE7CMD_MOTOR		0x0b
     96  1.1   pk #define MOTOR_ON		0x80
     97  1.1   pk 
     98  1.1   pk #define NE7CMD_DUMPREG		0x0e
     99  1.1   pk #define NE7CMD_VERSION		0x10
    100  1.1   pk 
    101  1.2   pk #define ST1_OVERRUN		0x10
    102  1.2   pk 
    103  1.6   pk #define NE7_SPECIFY_NODMA	0x01
    104