111 lines
3.9 KiB
C
111 lines
3.9 KiB
C
|
/* $NetBSD: fdreg.h,v 1.1.1.1 1998/06/20 04:58:51 eeh 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. 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.
|
||
|
|
*
|
||
|
|
* @(#)fdreg.h 7.1 (Berkeley) 5/9/91
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* AT floppy controller registers and bitfields
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* uses NEC765 controller */
|
||
|
|
#include <dev/ic/nec765reg.h>
|
||
|
|
|
||
|
|
#ifndef _LOCORE
|
||
|
|
struct fdreg_77 {
|
||
|
|
u_int8_t fd_statusA;
|
||
|
|
u_int8_t fd_statusB;
|
||
|
|
u_int8_t fd_dor; /* Digital Output Register (R/W) */
|
||
|
|
u_int8_t fd_tdr; /* Tape Control Register (R/W) */
|
||
|
|
u_int8_t fd_msr; /* Main Status Register (R) */
|
||
|
|
#define fd_drs fd_msr /* Data Rate Select Register (W) */
|
||
|
|
u_int8_t fd_fifo; /* Data (FIFO) register (R/W) */
|
||
|
|
u_int8_t fd_reserved;
|
||
|
|
u_int8_t fd_dir; /* Digital Input Register (R) */
|
||
|
|
#define fd_ccr fd_dir /* Configuration Control (W) */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct fdreg_72 {
|
||
|
|
u_int8_t fd_msr; /* Main Status Register (R) */
|
||
|
|
#if already_a_define
|
||
|
|
#define fd_drs fd_msr /* Data Rate Select Register (W) */
|
||
|
|
#endif
|
||
|
|
u_int8_t fd_fifo; /* Data (FIFO) register (R/W) */
|
||
|
|
};
|
||
|
|
|
||
|
|
union fdreg {
|
||
|
|
struct fdreg_72 fun72;
|
||
|
|
struct fdreg_77 fun77;
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Data Select Register bits */
|
||
|
|
#define DRS_RESET 0x80
|
||
|
|
#define DRS_POWER 0x40
|
||
|
|
#define DRS_PLL 0x20
|
||
|
|
#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 */
|
||
|
|
|
||
|
|
/* Digital Output Register bits (modified on suns) */
|
||
|
|
#define FDO_DS 0x01 /* floppy device select (neg) */
|
||
|
|
#define FDO_FRST 0x04 /* floppy controller reset (neg) */
|
||
|
|
#define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */
|
||
|
|
#define FDO_MOEN(n) ((1 << n) << 4) /* motor enable */
|
||
|
|
#define FDO_DEN 0x40 /* Density select */
|
||
|
|
#define FDO_EJ 0x80 /* Eject disk */
|
||
|
|
|
||
|
|
#define FDI_DCHG 0x80 /* diskette has been changed */
|
||
|
|
|
||
|
|
/* XXX - find a place for these... */
|
||
|
|
#define NE7CMD_CFG 0x13
|
||
|
|
#define CFG_EIS 0x40
|
||
|
|
#define CFG_EFIFO 0x20
|
||
|
|
#define CFG_POLL 0x10
|
||
|
|
#define CFG_THRHLD_MASK 0x0f
|
||
|
|
|
||
|
|
#define NE7CMD_LOCK 0x14
|
||
|
|
#define CFG_LOCK 0x80
|
||
|
|
|
||
|
|
#define NE7CMD_MOTOR 0x0b
|
||
|
|
#define MOTOR_ON 0x80
|
||
|
|
|
||
|
|
#define NE7CMD_DUMPREG 0x0e
|
||
|
|
#define NE7CMD_VERSION 0x10
|
||
|
|
|
||
|
|
#define ST1_OVERRUN 0x10
|
||
|
|
|
||
|
|
#define NE7_SPECIFY_NODMA 0x01
|