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/* $OpenBSD: z8530tty.h,v 1.3 2003/06/02 23:27:49 millert Exp $ */
/* $NetBSD: z8530tty.h,v 1.1 1996/05/18 18:54:35 briggs Exp $ */
/*
* Copyright (c) 1994 Gordon W. Ross
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratory.
*
* 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. 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.
*
* @(#)zs.c 8.1 (Berkeley) 7/19/93
*/
/*
* Zilog Z8530 Dual UART driver (tty interface)
*
* This is the "slave" driver that will be attached to
* the "zsc" driver for plain "tty" async. serial lines.
*/
/*
* Allow the MD var.h to override the default CFLAG so that
* console messages during boot come out with correct parity.
*/
#ifndef ZSTTY_DEF_CFLAG
#define ZSTTY_DEF_CFLAG TTYDEF_CFLAG
#endif
/*
* How many input characters we can buffer.
* The port-specific var.h may override this.
* Note: must be a power of two!
*/
#ifndef ZSTTY_RING_SIZE
#define ZSTTY_RING_SIZE 2048
#endif
struct zstty_stats {
int ring_block;
int ring_unblock;
int tty_block;
int tty_unblock;
};
struct zstty_softc {
struct device zst_dev; /* required first: base device */
struct tty *zst_tty;
struct zs_chanstate *zst_cs;
int zst_hwflags; /* see z8530var.h */
int zst_swflags; /* TIOCFLAG_SOFTCAR, ... <ttycom.h> */
/*
* Printing an overrun error message often takes long enough to
* cause another overrun, so we only print one per second.
*/
long zst_rotime; /* time of last ring overrun */
long zst_fotime; /* time of last fifo overrun */
long zst_intotime; /* time of last interrupt overrun */
/*
* The receive ring buffer.
*/
int zst_rbget; /* ring buffer `get' index */
volatile int zst_rbput; /* ring buffer `put' index */
int zst_ringmask;
int zst_rbhiwat;
u_short *zst_rbuf; /* rr1, data pairs */
/*
* The transmit byte count and address are used for pseudo-DMA
* output in the hardware interrupt code. PDMA can be suspended
* to get pending changes done; heldtbc is used for this. It can
* also be stopped for ^S; this sets TS_TTSTOP in tp->t_state.
*/
int zst_tbc; /* transmit byte count */
caddr_t zst_tba; /* transmit buffer address */
int zst_heldtbc; /* held tbc while xmission stopped */
/* Flags to communicate with zstty_softint() */
volatile char zst_rx_blocked;
volatile char zst_rx_overrun;
volatile char zst_tx_stopped;
volatile char zst_tx_empty;
volatile char zst_st_check;
char pad[3];
struct termios zst_termios; /* default values for tty flags */
#define zst_cflag zst_termios.c_cflag
#define zst_iflag zst_termios.c_iflag
#define zst_lflag zst_termios.c_lflag
#define zst_oflag zst_termios.c_oflag
#define zst_cc zst_termios.c_cc
#define zst_ispeed zst_termios.c_ispeed
#define zst_ospeed zst_termios.c_ospeed
char zst_resetdef; /* !=0 means reset tty defs. on open */
char zst_hwimask; /* bits to keep low for hwiflow */
char zst_hwimasks[4]; /* masks for hwiflow for HFC modes */
};
#define ZSTTY_RAW_CFLAG (CS8 | CREAD | HUPCL )
#define ZSTTY_RAW_IFLAG (IXANY | IMAXBEL)
#define ZSTTY_RAW_LFLAG (ECHOE|ECHOKE|ECHOCTL)
#define ZSTTY_RAW_OFLAG (ONLCR | OXTABS)
/* Above taken from looking at a tty after a stty raw */
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