mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-17 10:26:15 +00:00
a60eff2770
Date: Mon, 14 Feb 94 15:57:14 CST This adds a copyright to the fdc.h file and fixes a bug in re-tries during writes on a heavily loaded system.
76 lines
3.1 KiB
C
76 lines
3.1 KiB
C
/*-
|
|
* 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)
|