1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2004 Poul-Henning Kamp 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * This file contains definitions which pertain to serial ports as such, 29 * (both async and sync), but which do not necessarily have anything to 30 * do with tty processing. 31 * 32 * $FreeBSD$ 33 */ 34 35 #ifndef _SYS_SERIAL_H_ 36 #define _SYS_SERIAL_H_ 37 38 39 /* 40 * Indentification of modem control signals. These definitions match 41 * the TIOCMGET definitions in <sys/ttycom.h> shifted a bit down, and 42 * that identity is enforced with CTASSERT at the bottom of kern/tty.c 43 * Both the modem bits and delta bits must fit in 16 bit. 44 */ 45 #define SER_DTR 0x0001 /* data terminal ready */ 46 #define SER_RTS 0x0002 /* request to send */ 47 #define SER_STX 0x0004 /* secondary transmit */ 48 #define SER_SRX 0x0008 /* secondary receive */ 49 #define SER_CTS 0x0010 /* clear to send */ 50 #define SER_DCD 0x0020 /* data carrier detect */ 51 #define SER_RI 0x0040 /* ring indicate */ 52 #define SER_DSR 0x0080 /* data set ready */ 53 54 #define SER_MASK_STATE 0x00ff 55 56 /* Delta bits, used to indicate which signals should/was affected */ 57 #define SER_DELTA(x) ((x) << 8) 58 59 #define SER_DDTR SER_DELTA(SER_DTR) 60 #define SER_DRTS SER_DELTA(SER_RTS) 61 #define SER_DSTX SER_DELTA(SER_STX) 62 #define SER_DSRX SER_DELTA(SER_SRX) 63 #define SER_DCTS SER_DELTA(SER_CTS) 64 #define SER_DDCD SER_DELTA(SER_DCD) 65 #define SER_DRI SER_DELTA(SER_RI) 66 #define SER_DDSR SER_DELTA(SER_DSR) 67 68 #define SER_MASK_DELTA SER_DELTA(SER_MASK_STATE) 69 70 #ifdef _KERNEL 71 /* 72 * Specification of interrupt sources typical for serial ports. These are 73 * useful when some umbrella driver like scc(4) has enough knowledge of 74 * the hardware to obtain the set of pending interrupts but does not itself 75 * handle the interrupt. Each interrupt source can be given an interrupt 76 * resource for which inferior drivers can install handlers. The lower 16 77 * bits are kept free for the signals above. 78 */ 79 #define SER_INT_OVERRUN 0x010000 80 #define SER_INT_BREAK 0x020000 81 #define SER_INT_RXREADY 0x040000 82 #define SER_INT_SIGCHG 0x080000 83 #define SER_INT_TXIDLE 0x100000 84 85 #define SER_INT_MASK 0xff0000 86 #define SER_INT_SIGMASK (SER_MASK_DELTA | SER_MASK_STATE) 87 88 #ifndef LOCORE 89 typedef int serdev_intr_t(void*); 90 #endif 91 92 #endif /* _KERNEL */ 93 94 #endif /* !_SYS_SERIAL_H_ */ 95