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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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d0ffb805b7
Alpha has had c_ispeed and c_ospeed, but still set speeds in c_cflags using arbitrary flags. Because BOTHER is not defined, the general Linux code doesn't allow setting arbitrary baud rates, and because CBAUDEX == 0, we can have an array overrun of the baud_rate[] table in drivers/tty/tty_baudrate.c if (c_cflags & CBAUD) == 037. Resolve both problems by #defining BOTHER to 037 on Alpha. However, userspace still needs to know if setting BOTHER is actually safe given legacy kernels (does anyone actually care about that on Alpha anymore?), so enable the TCGETS2/TCSETS*2 ioctls on Alpha, even though they use the same structure. Define struct termios2 just for compatibility; it is the exact same structure as struct termios. In a future patchset, this will be cleaned up so the uapi headers are usable from libc. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com> Cc: Jiri Slaby <jslaby@suse.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Eugene Syromiatnikov <esyr@redhat.com> Cc: <linux-alpha@vger.kernel.org> Cc: <linux-serial@vger.kernel.org> Cc: Johan Hovold <johan@kernel.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
224 lines
5.2 KiB
C
224 lines
5.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _ALPHA_TERMBITS_H
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#define _ALPHA_TERMBITS_H
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#include <linux/posix_types.h>
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typedef unsigned char cc_t;
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typedef unsigned int speed_t;
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typedef unsigned int tcflag_t;
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/*
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* termios type and macro definitions. Be careful about adding stuff
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* to this file since it's used in GNU libc and there are strict rules
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* concerning namespace pollution.
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*/
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#define NCCS 19
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struct termios {
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tcflag_t c_iflag; /* input mode flags */
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tcflag_t c_oflag; /* output mode flags */
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tcflag_t c_cflag; /* control mode flags */
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tcflag_t c_lflag; /* local mode flags */
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cc_t c_cc[NCCS]; /* control characters */
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cc_t c_line; /* line discipline (== c_cc[19]) */
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speed_t c_ispeed; /* input speed */
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speed_t c_ospeed; /* output speed */
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};
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/* Alpha has identical termios and termios2 */
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struct termios2 {
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tcflag_t c_iflag; /* input mode flags */
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tcflag_t c_oflag; /* output mode flags */
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tcflag_t c_cflag; /* control mode flags */
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tcflag_t c_lflag; /* local mode flags */
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cc_t c_cc[NCCS]; /* control characters */
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cc_t c_line; /* line discipline (== c_cc[19]) */
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speed_t c_ispeed; /* input speed */
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speed_t c_ospeed; /* output speed */
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};
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/* Alpha has matching termios and ktermios */
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struct ktermios {
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tcflag_t c_iflag; /* input mode flags */
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tcflag_t c_oflag; /* output mode flags */
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tcflag_t c_cflag; /* control mode flags */
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tcflag_t c_lflag; /* local mode flags */
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cc_t c_cc[NCCS]; /* control characters */
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cc_t c_line; /* line discipline (== c_cc[19]) */
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speed_t c_ispeed; /* input speed */
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speed_t c_ospeed; /* output speed */
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};
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/* c_cc characters */
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#define VEOF 0
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#define VEOL 1
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#define VEOL2 2
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#define VERASE 3
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#define VWERASE 4
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#define VKILL 5
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#define VREPRINT 6
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#define VSWTC 7
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#define VINTR 8
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#define VQUIT 9
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#define VSUSP 10
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#define VSTART 12
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#define VSTOP 13
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#define VLNEXT 14
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#define VDISCARD 15
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#define VMIN 16
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#define VTIME 17
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/* c_iflag bits */
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#define IGNBRK 0000001
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#define BRKINT 0000002
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#define IGNPAR 0000004
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#define PARMRK 0000010
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#define INPCK 0000020
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#define ISTRIP 0000040
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#define INLCR 0000100
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#define IGNCR 0000200
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#define ICRNL 0000400
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#define IXON 0001000
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#define IXOFF 0002000
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#define IXANY 0004000
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#define IUCLC 0010000
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#define IMAXBEL 0020000
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#define IUTF8 0040000
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/* c_oflag bits */
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#define OPOST 0000001
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#define ONLCR 0000002
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#define OLCUC 0000004
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#define OCRNL 0000010
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#define ONOCR 0000020
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#define ONLRET 0000040
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#define OFILL 00000100
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#define OFDEL 00000200
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#define NLDLY 00001400
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#define NL0 00000000
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#define NL1 00000400
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#define NL2 00001000
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#define NL3 00001400
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#define TABDLY 00006000
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#define TAB0 00000000
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#define TAB1 00002000
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#define TAB2 00004000
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#define TAB3 00006000
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#define CRDLY 00030000
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#define CR0 00000000
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#define CR1 00010000
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#define CR2 00020000
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#define CR3 00030000
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#define FFDLY 00040000
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#define FF0 00000000
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#define FF1 00040000
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#define BSDLY 00100000
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#define BS0 00000000
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#define BS1 00100000
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#define VTDLY 00200000
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#define VT0 00000000
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#define VT1 00200000
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/*
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* Should be equivalent to TAB3, see description of TAB3 in
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* POSIX.1-2008, Ch. 11.2.3 "Output Modes"
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*/
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#define XTABS TAB3
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/* c_cflag bit meaning */
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#define CBAUD 0000037
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#define B0 0000000 /* hang up */
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#define B50 0000001
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#define B75 0000002
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#define B110 0000003
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#define B134 0000004
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#define B150 0000005
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#define B200 0000006
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#define B300 0000007
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#define B600 0000010
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#define B1200 0000011
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#define B1800 0000012
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#define B2400 0000013
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#define B4800 0000014
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#define B9600 0000015
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#define B19200 0000016
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#define B38400 0000017
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#define EXTA B19200
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#define EXTB B38400
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#define CBAUDEX 0000000
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#define B57600 00020
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#define B115200 00021
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#define B230400 00022
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#define B460800 00023
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#define B500000 00024
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#define B576000 00025
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#define B921600 00026
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#define B1000000 00027
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#define B1152000 00030
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#define B1500000 00031
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#define B2000000 00032
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#define B2500000 00033
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#define B3000000 00034
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#define B3500000 00035
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#define B4000000 00036
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#define BOTHER 00037
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#define CSIZE 00001400
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#define CS5 00000000
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#define CS6 00000400
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#define CS7 00001000
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#define CS8 00001400
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#define CSTOPB 00002000
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#define CREAD 00004000
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#define PARENB 00010000
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#define PARODD 00020000
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#define HUPCL 00040000
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#define CLOCAL 00100000
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#define CMSPAR 010000000000 /* mark or space (stick) parity */
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#define CRTSCTS 020000000000 /* flow control */
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#define CIBAUD 07600000
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#define IBSHIFT 16
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/* c_lflag bits */
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#define ISIG 0x00000080
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#define ICANON 0x00000100
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#define XCASE 0x00004000
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#define ECHO 0x00000008
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#define ECHOE 0x00000002
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#define ECHOK 0x00000004
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#define ECHONL 0x00000010
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#define NOFLSH 0x80000000
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#define TOSTOP 0x00400000
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#define ECHOCTL 0x00000040
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#define ECHOPRT 0x00000020
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#define ECHOKE 0x00000001
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#define FLUSHO 0x00800000
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#define PENDIN 0x20000000
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#define IEXTEN 0x00000400
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#define EXTPROC 0x10000000
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/* Values for the ACTION argument to `tcflow'. */
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#define TCOOFF 0
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#define TCOON 1
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#define TCIOFF 2
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#define TCION 3
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/* Values for the QUEUE_SELECTOR argument to `tcflush'. */
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#define TCIFLUSH 0
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#define TCOFLUSH 1
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#define TCIOFLUSH 2
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/* Values for the OPTIONAL_ACTIONS argument to `tcsetattr'. */
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#define TCSANOW 0
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#define TCSADRAIN 1
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#define TCSAFLUSH 2
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#endif /* _ALPHA_TERMBITS_H */
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