termbits.h

《嵌入式系统设计与实例开发实验教材二源码》Linux内核移植与编译实验

/*
 * termbits stuff for Linux/MIPS.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1995, 1996, 2001 Ralf Baechle
 * Copyright (C) 2001  MIPS Technologies, Inc.
 */
#ifndef _ASM_TERMBITS_H
#define _ASM_TERMBITS_H

#include <linux/posix_types.h>

typedef unsigned char cc_t;
typedef unsigned long speed_t;
typedef unsigned long tcflag_t;

/*
 * The ABI says nothing about NCC but seems to use NCCS as
 * replacement for it in struct termio
 */
#define NCCS	23
struct termios {
	tcflag_t c_iflag;		/* input mode flags */
	tcflag_t c_oflag;		/* output mode flags */
	tcflag_t c_cflag;		/* control mode flags */
	tcflag_t c_lflag;		/* local mode flags */
	/*
	 * Seems nonexistent in the ABI, but Linux assumes existence ...
	 */
	cc_t c_line;			/* line discipline */
	cc_t c_cc[NCCS];		/* control characters */
};

/* c_cc characters */
#define VINTR		 0		/* Interrupt character [ISIG].  */
#define VQUIT		 1		/* Quit character [ISIG].  */
#define VERASE		 2		/* Erase character [ICANON].  */
#define VKILL		 3		/* Kill-line character [ICANON].  */
#define VMIN		 4		/* Minimum number of bytes read at once [!ICANON].  */
#define VTIME		 5		/* Time-out value (tenths of a second) [!ICANON].  */
#define VEOL2		 6		/* Second EOL character [ICANON].  */
#define VSWTC		 7		/* ??? */
#define VSWTCH		VSWTC
#define VSTART		 8		/* Start (X-ON) character [IXON, IXOFF].  */
#define VSTOP		 9		/* Stop (X-OFF) character [IXON, IXOFF].  */
#define VSUSP		10		/* Suspend character [ISIG].  */
#if 0
/*
 * VDSUSP is not supported
 */
#define VDSUSP		11		/* Delayed suspend character [ISIG].  */
#endif
#define VREPRINT	12		/* Reprint-line character [ICANON].  */
#define VDISCARD	13		/* Discard character [IEXTEN].  */
#define VWERASE		14		/* Word-erase character [ICANON].  */
#define VLNEXT		15		/* Literal-next character [IEXTEN].  */
#define VEOF		16		/* End-of-file character [ICANON].  */
#define VEOL		17		/* End-of-line character [ICANON].  */

/* c_iflag bits */
#define IGNBRK	0000001		/* Ignore break condition.  */
#define BRKINT	0000002		/* Signal interrupt on break.  */
#define IGNPAR	0000004		/* Ignore characters with parity errors.  */
#define PARMRK	0000010		/* Mark parity and framing errors.  */
#define INPCK	0000020		/* Enable input parity check.  */
#define ISTRIP	0000040		/* Strip 8th bit off characters.  */
#define INLCR	0000100		/* Map NL to CR on input.  */
#define IGNCR	0000200		/* Ignore CR.  */
#define ICRNL	0000400		/* Map CR to NL on input.  */
#define IUCLC	0001000		/* Map upper case to lower case on input.  */
#define IXON	0002000		/* Enable start/stop output control.  */
#define IXANY	0004000		/* Any character will restart after stop.  */
#define IXOFF	0010000		/* Enable start/stop input control.  */
#define IMAXBEL	0020000		/* Ring bell when input queue is full.  */

/* c_oflag bits */
#define OPOST	0000001		/* Perform output processing.  */
#define OLCUC	0000002		/* Map lower case to upper case on output.  */
#define ONLCR	0000004		/* Map NL to CR-NL on output.  */
#define OCRNL	0000010
#define ONOCR	0000020
#define ONLRET	0000040
#define OFILL	0000100
#define OFDEL	0000200
#define NLDLY	0000400
#define   NL0	0000000
#define   NL1	0000400
#define CRDLY	0003000
#define   CR0	0000000
#define   CR1	0001000
#define   CR2	0002000
#define   CR3	0003000
#define TABDLY	0014000
#define   TAB0	0000000
#define   TAB1	0004000
#define   TAB2	0010000
#define   TAB3	0014000
#define   XTABS	0014000
#define BSDLY	0020000
#define   BS0	0000000
#define   BS1	0020000
#define VTDLY	0040000
#define   VT0	0000000
#define   VT1	0040000
#define FFDLY	0100000
#define   FF0	0000000
#define   FF1	0100000
/*
#define PAGEOUT ???
#define WRAP    ???
 */

/* c_cflag bit meaning */
#define CBAUD	0010017
#define  B0	0000000		/* hang up */
#define  B50	0000001
#define  B75	0000002
#define  B110	0000003
#define  B134	0000004
#define  B150	0000005
#define  B200	0000006
#define  B300	0000007
#define  B600	0000010
#define  B1200	0000011
#define  B1800	0000012
#define  B2400	0000013
#define  B4800	0000014
#define  B9600	0000015
#define  B19200	0000016
#define  B38400	0000017
#define EXTA B19200
#define EXTB B38400
#define CSIZE	0000060		/* Number of bits per byte (mask).  */
#define   CS5	0000000		/* 5 bits per byte.  */
#define   CS6	0000020		/* 6 bits per byte.  */
#define   CS7	0000040		/* 7 bits per byte.  */
#define   CS8	0000060		/* 8 bits per byte.  */
#define CSTOPB	0000100		/* Two stop bits instead of one.  */
#define CREAD	0000200		/* Enable receiver.  */
#define PARENB	0000400		/* Parity enable.  */
#define PARODD	0001000		/* Odd parity instead of even.  */
#define HUPCL	0002000		/* Hang up on last close.  */
#define CLOCAL	0004000		/* Ignore modem status lines.  */
#define CBAUDEX 0010000
#define    B57600 0010001
#define   B115200 0010002
#define   B230400 0010003
#define   B460800 0010004
#define   B500000 0010005
#define   B576000 0010006
#define   B921600 0010007
#define  B1000000 0010010
#define  B1152000 0010011
#define  B1500000 0010012
#define  B2000000 0010013
#define  B2500000 0010014
#define  B3000000 0010015
#define  B3500000 0010016
#define  B4000000 0010017
#define CIBAUD	  002003600000	/* input baud rate (not used) */
#define CMSPAR    010000000000	/* mark or space (stick) parity */
#define CRTSCTS	  020000000000		/* flow control */

/* c_lflag bits */
#define ISIG	0000001		/* Enable signals.  */
#define ICANON	0000002		/* Do erase and kill processing.  */
#define XCASE	0000004
#define ECHO	0000010		/* Enable echo.  */
#define ECHOE	0000020		/* Visual erase for ERASE.  */
#define ECHOK	0000040		/* Echo NL after KILL.  */
#define ECHONL	0000100		/* Echo NL even if ECHO is off.  */
#define NOFLSH	0000200		/* Disable flush after interrupt.  */
#define IEXTEN	0000400		/* Enable DISCARD and LNEXT.  */
#define ECHOCTL	0001000		/* Echo control characters as ^X.  */
#define ECHOPRT	0002000		/* Hardcopy visual erase.  */
#define ECHOKE	0004000		/* Visual erase for KILL.  */
#define FLUSHO	0020000
#define PENDIN	0040000		/* Retype pending input (state).  */
#define TOSTOP	0100000		/* Send SIGTTOU for background output.  */
#define ITOSTOP	TOSTOP

/* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
#define TIOCSER_TEMT    0x01	/* Transmitter physically empty */

/* tcflow() and TCXONC use these */
#define	TCOOFF		0	/* Suspend output.  */
#define	TCOON		1	/* Restart suspended output.  */
#define	TCIOFF		2	/* Send a STOP character.  */
#define	TCION		3	/* Send a START character.  */

/* tcflush() and TCFLSH use these */
#define	TCIFLUSH	0	/* Discard data received but not yet read.  */
#define	TCOFLUSH	1	/* Discard data written but not yet sent.  */
#define	TCIOFLUSH	2	/* Discard all pending data.  */

/* tcsetattr uses these */
#define	TCSANOW		TCSETS	/* Change immediately.  */
#define	TCSADRAIN	TCSETSW	/* Change when pending output is written.  */
#define	TCSAFLUSH	TCSETSF	/* Flush pending input before changing.  */

#endif /* _ASM_TERMBITS_H */