From 25062ba061871945759b3baa833fe64969383e40 Mon Sep 17 00:00:00 2001 From: rgrimes Date: Sat, 12 Jun 1993 14:58:17 +0000 Subject: Initial import, 0.1 + pk 0.2.4-B1 --- sys/dev/ic/ns16550.h | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 sys/dev/ic/ns16550.h (limited to 'sys/dev/ic/ns16550.h') diff --git a/sys/dev/ic/ns16550.h b/sys/dev/ic/ns16550.h new file mode 100644 index 0000000..e20e9aa --- /dev/null +++ b/sys/dev/ic/ns16550.h @@ -0,0 +1,50 @@ +/*- + * 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 + */ + +/* + * NS16550 UART registers + */ + +#define com_data 0 /* data register (R/W) */ +#define com_dlbl 0 /* divisor latch low (W) */ +#define com_dlbh 1 /* divisor latch high (W) */ +#define com_ier 1 /* interrupt enable (W) */ +#define com_iir 2 /* interrupt identification (R) */ +#define com_fifo 2 /* FIFO control (W) */ +#define com_lctl 3 /* line control register (R/W) */ +#define com_cfcr 3 /* line control register (R/W) */ +#define com_mcr 4 /* modem control register (R/W) */ +#define com_lsr 5 /* line status register (R/W) */ +#define com_msr 6 /* modem status register (R/W) */ -- cgit v1.1