sys/sys/serial.h

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