projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 4af7e30c NW |
1 | /*- |
| 2 | * Copyright (c) 1990 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 32 | * | |
| 33 | * from: @(#)fd.c 7.4 (Berkeley) 5/25/91 | |
| 34 | * $Id:$ | |
| 35 | * | |
| 36 | */ | |
| 37 | ||
| c2ab4ad1 AM |
38 | |
| 39 | /***********************************************************************\ | |
| 40 | * Per controller structure. * | |
| 41 | \***********************************************************************/ | |
| 42 | struct fdc_data | |
| 43 | { | |
| 44 | int fdcu; /* our unit number */ | |
| 45 | int baseport; | |
| 46 | int dmachan; | |
| 47 | int flags; | |
| 48 | #define FDC_ATTACHED 0x01 | |
| 49 | #define FDC_HASFTAPE 0x02 | |
| 50 | #define FDC_TAPE_BUSY 0x04 | |
| 51 | struct fd_data *fd; | |
| 52 | int fdu; /* the active drive */ | |
| 53 | struct buf head; /* Head of buf chain */ | |
| 54 | struct buf rhead; /* Raw head of buf chain */ | |
| 55 | int state; | |
| 56 | int retry; | |
| 57 | int status[7]; /* copy of the registers */ | |
| 58 | }; | |
| 59 | ||
| 60 | /***********************************************************************\ | |
| 61 | * Throughout this file the following conventions will be used: * | |
| 62 | * fd is a pointer to the fd_data struct for the drive in question * | |
| 63 | * fdc is a pointer to the fdc_data struct for the controller * | |
| 64 | * fdu is the floppy drive unit number * | |
| 65 | * fdcu is the floppy controller unit number * | |
| 66 | * fdsu is the floppy drive unit number on that controller. (sub-unit) * | |
| 67 | \***********************************************************************/ | |
| 68 | typedef int fdu_t; | |
| 69 | typedef int fdcu_t; | |
| 70 | typedef int fdsu_t; | |
| 71 | typedef struct fd_data *fd_p; | |
| 72 | typedef struct fdc_data *fdc_p; | |
| 73 | ||
| 74 | #define FDUNIT(s) (((s)>>6)&03) | |
| 75 | #define FDTYPE(s) ((s)&077) |