Return to fdreg.h CVS log

Up to [local] / sys / dev / isa

Annotation of sys/dev/isa/fdreg.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: fdreg.h,v 1.12 2006/08/13 03:36:24 krw Exp $  */
                      2: /*     $NetBSD: fdreg.h,v 1.8 1995/06/28 04:30:57 cgd Exp $    */
                      3:
                      4: /*-
                      5:  * Copyright (c) 1991 The Regents of the University of California.
                      6:  * All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. Neither the name of the University nor the names of its contributors
                     17:  *    may be used to endorse or promote products derived from this software
                     18:  *    without specific prior written permission.
                     19:  *
                     20:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     30:  * SUCH DAMAGE.
                     31:  *
                     32:  *     @(#)fdreg.h     7.1 (Berkeley) 5/9/91
                     33:  */
                     34:
                     35: /*
                     36:  * AT floppy controller registers and bitfields
                     37:  */
                     38:
                     39: /* uses NEC765 controller */
                     40: #include <dev/ic/nec765reg.h>
                     41:
                     42: /* registers */
                     43: #define        fdout   2       /* Digital Output Register (W) */
                     44: #define        FDO_FDSEL       0x03    /*  floppy device select */
                     45: #define        FDO_FRST        0x04    /*  floppy controller reset */
                     46: #define        FDO_FDMAEN      0x08    /*  enable floppy DMA and Interrupt */
                     47: #define        FDO_MOEN(n)     ((1 << n) * 0x10)       /* motor enable */
                     48:
                     49: #define        fdsts   4       /* NEC 765 Main Status Register (R) */
                     50: #define        fddata  5       /* NEC 765 Data Register (R/W) */
                     51:
                     52: #define FDCTL_OFFSET   7       /* Offset from the other registers. */
                     53: #define        fdctl   0       /* Control Register (W) */
                     54: #define        FDC_500KBPS     0x00    /* 500KBPS MFM drive transfer rate */
                     55: #define        FDC_300KBPS     0x01    /* 300KBPS MFM drive transfer rate */
                     56: #define        FDC_250KBPS     0x02    /* 250KBPS MFM drive transfer rate */
                     57: #define        FDC_125KBPS     0x03    /* 125KBPS FM drive transfer rate */
                     58:
                     59: #define        fdin    0       /* Digital Input Register (R) */
                     60: #define        FDI_DCHG        0x80    /* diskette has been changed */
                     61:
                     62: #define        FDC_NPORT       6
                     63: #define FDCTL_NPORT    1
                     64: #define        FDC_MAXIOSIZE   NBPG    /* XXX should be MAXBSIZE */
                     65: #define        FD_BSIZE(fd)    (128 << fd->sc_type->secsize)
                     66:
                     67: #define FDUNIT(dev)    ((dev & 0x80) >> 7)     /* XXX two drives max, sorry */
                     68: #define FDTYPE(dev)    ((minor(dev) & 0x70) >> 4)
                     69: #define FDPART(dev)    (minor(dev) & 0x0f)