diff options
Diffstat (limited to 'sys/isa/fdc.h')
| -rw-r--r-- | sys/isa/fdc.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/sys/isa/fdc.h b/sys/isa/fdc.h new file mode 100644 index 0000000..1542f0e --- /dev/null +++ b/sys/isa/fdc.h @@ -0,0 +1,75 @@ +/*- + * Copyright (c) 1990 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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. + * + * from: @(#)fd.c 7.4 (Berkeley) 5/25/91 + * $Id:$ + * + */ + + +/***********************************************************************\ +* Per controller structure. * +\***********************************************************************/ +struct fdc_data +{ + int fdcu; /* our unit number */ + int baseport; + int dmachan; + int flags; +#define FDC_ATTACHED 0x01 +#define FDC_HASFTAPE 0x02 +#define FDC_TAPE_BUSY 0x04 + struct fd_data *fd; + int fdu; /* the active drive */ + struct buf head; /* Head of buf chain */ + struct buf rhead; /* Raw head of buf chain */ + int state; + int retry; + int status[7]; /* copy of the registers */ +}; + +/***********************************************************************\ +* Throughout this file the following conventions will be used: * +* fd is a pointer to the fd_data struct for the drive in question * +* fdc is a pointer to the fdc_data struct for the controller * +* fdu is the floppy drive unit number * +* fdcu is the floppy controller unit number * +* fdsu is the floppy drive unit number on that controller. (sub-unit) * +\***********************************************************************/ +typedef int fdu_t; +typedef int fdcu_t; +typedef int fdsu_t; +typedef struct fd_data *fd_p; +typedef struct fdc_data *fdc_p; + +#define FDUNIT(s) (((s)>>6)&03) +#define FDTYPE(s) ((s)&077) |
