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- /* $OpenBSD: fdreg.h,v 1.12 2006/08/13 03:36:24 krw Exp $ */
- /* $NetBSD: fdreg.h,v 1.8 1995/06/28 04:30:57 cgd Exp $ */
- /*-
- * Copyright (c) 1991 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)fdreg.h 7.1 (Berkeley) 5/9/91
- */
- /*
- * AT floppy controller registers and bitfields
- */
- /* uses NEC765 controller */
- #include <dev/ic/nec765reg.h>
- /* registers */
- #define fdout 2 /* Digital Output Register (W) */
- #define FDO_FDSEL 0x03 /* floppy device select */
- #define FDO_FRST 0x04 /* floppy controller reset */
- #define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */
- #define FDO_MOEN(n) ((1 << n) * 0x10) /* motor enable */
- #define fdsts 4 /* NEC 765 Main Status Register (R) */
- #define fddata 5 /* NEC 765 Data Register (R/W) */
- #define FDCTL_OFFSET 7 /* Offset from the other registers. */
- #define fdctl 0 /* Control Register (W) */
- #define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */
- #define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */
- #define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */
- #define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */
- #define fdin 0 /* Digital Input Register (R) */
- #define FDI_DCHG 0x80 /* diskette has been changed */
- #define FDC_NPORT 6
- #define FDCTL_NPORT 1
- #define FDC_MAXIOSIZE NBPG /* XXX should be MAXBSIZE */
- #define FD_BSIZE(fd) (128 << fd->sc_type->secsize)
- #define FDUNIT(dev) ((dev & 0x80) >> 7) /* XXX two drives max, sorry */
- #define FDTYPE(dev) ((minor(dev) & 0x70) >> 4)
- #define FDPART(dev) (minor(dev) & 0x0f)
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