freebsd-dev/sys/i386/isa/ic/i8251.h
Satoshi Asami 0e408c25a1 Another round of merge/update.
(1) Add PC98 support to apm_bios.h and ns16550.h, remove pc98/pc98/ic
(2) Move PC98 specific code out of cpufunc.h (to pc98.h)
(3) Let the boot subtrees look more alike

Submitted by:	The FreeBSD(98) Development Team
		<freebsd98-hackers@jp.freebsd.org>
1996-09-12 11:12:18 +00:00

80 lines
3.3 KiB
C

/*-
* 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.
*
* @(#)ns16550.h 7.1 (Berkeley) 5/9/91
*/
/*
* modified for PC9801 by M.Ishii
* Kyoto University Microcomputer Club (KMC)
*/
/* define command and status code */
#define CMD8251_TxEN 0x01 /* transmit enable */
#define CMD8251_DTR 0x02 /* assert DTR */
#define CMD8251_RxEN 0x04 /* receive enable */
#define CMD8251_SBRK 0x08 /* send break */
#define CMD8251_ER 0x10 /* error reset */
#define CMD8251_RTS 0x20 /* assert RTS */
#define CMD8251_RESET 0x40 /* internal reset */
#define CMD8251_EH 0x80 /* enter hunt mode (only synchronous mode)*/
#define STS8251_TxRDY 0x01 /* transmit READY */
#define STS8251_RxRDY 0x02 /* data exists in receive buffer */
#define STS8251_TxEMP 0x04 /* transmit buffer EMPTY */
#define STS8251_PE 0x08 /* perity error */
#define STS8251_OE 0x10 /* overrun error */
#define STS8251_FE 0x20 /* framing error */
#define STS8251_BD_SD 0x40 /* break detect (async) / sync detect (sync) */
#define STS8251_DSR 0x80 /* DSR is asserted */
#define MOD8251_5BITS 0x00
#define MOD8251_6BITS 0x04
#define MOD8251_7BITS 0x08
#define MOD8251_8BITS 0x0c
#define MOD8251_PDISAB 0x00 /* parity disable */
#define MOD8251_PODD 0x10 /* parity odd */
#define MOD8251_PEVEN 0x30 /* parity even */
#define MOD8251_STOP1 0x40 /* stop bit len = 1bit */
#define MOD8251_STOP2 0xc0 /* stop bit len = 2bit */
#define MOD8251_CLKX16 0x02 /* x16 */
#define MOD8251_CLKX1 0x01 /* x1 */
#define CICSCD_CI 0x80 /* CI */
#define CICSCD_CS 0x40 /* CS */
#define CICSCD_CD 0x20 /* CD */
/* interrupt mask control */
#define IEN_Rx 0x01
#define IEN_TxEMP 0x02
#define IEN_Tx 0x04