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Filename :
tty_flags.h
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _LINUX_TTY_FLAGS_H #define _LINUX_TTY_FLAGS_H /* * Definitions for async_struct (and serial_struct) flags field also * shared by the tty_port flags structures. * * Define ASYNCB_* for convenient use with {test,set,clear}_bit. * * Bits [0..ASYNCB_LAST_USER] are userspace defined/visible/changeable * [x] in the bit comments indicates the flag is defunct and no longer used. */ #define ASYNCB_HUP_NOTIFY 0 /* Notify getty on hangups and closes * on the callout port */ #define ASYNCB_FOURPORT 1 /* Set OUT1, OUT2 per AST Fourport settings */ #define ASYNCB_SAK 2 /* Secure Attention Key (Orange book) */ #define ASYNCB_SPLIT_TERMIOS 3 /* [x] Separate termios for dialin/callout */ #define ASYNCB_SPD_HI 4 /* Use 57600 instead of 38400 bps */ #define ASYNCB_SPD_VHI 5 /* Use 115200 instead of 38400 bps */ #define ASYNCB_SKIP_TEST 6 /* Skip UART test during autoconfiguration */ #define ASYNCB_AUTO_IRQ 7 /* Do automatic IRQ during * autoconfiguration */ #define ASYNCB_SESSION_LOCKOUT 8 /* [x] Lock out cua opens based on session */ #define ASYNCB_PGRP_LOCKOUT 9 /* [x] Lock out cua opens based on pgrp */ #define ASYNCB_CALLOUT_NOHUP 10 /* [x] Don't do hangups for cua device */ #define ASYNCB_HARDPPS_CD 11 /* Call hardpps when CD goes high */ #define ASYNCB_SPD_SHI 12 /* Use 230400 instead of 38400 bps */ #define ASYNCB_LOW_LATENCY 13 /* Request low latency behaviour */ #define ASYNCB_BUGGY_UART 14 /* This is a buggy UART, skip some safety * checks. Note: can be dangerous! */ #define ASYNCB_AUTOPROBE 15 /* [x] Port was autoprobed by PCI/PNP code */ #define ASYNCB_MAGIC_MULTIPLIER 16 /* Use special CLK or divisor */ #define ASYNCB_LAST_USER 16 /* * Internal flags used only by kernel (read-only) * * WARNING: These flags are no longer used and have been superceded by the * TTY_PORT_ flags in the iflags field (and not userspace-visible) */ #ifndef _KERNEL_ #define ASYNCB_INITIALIZED 31 /* Serial port was initialized */ #define ASYNCB_SUSPENDED 30 /* Serial port is suspended */ #define ASYNCB_NORMAL_ACTIVE 29 /* Normal device is active */ #define ASYNCB_BOOT_AUTOCONF 28 /* Autoconfigure port on bootup */ #define ASYNCB_CLOSING 27 /* Serial port is closing */ #define ASYNCB_CTS_FLOW 26 /* Do CTS flow control */ #define ASYNCB_CHECK_CD 25 /* i.e., CLOCAL */ #define ASYNCB_SHARE_IRQ 24 /* for multifunction cards, no longer used */ #define ASYNCB_CONS_FLOW 23 /* flow control for console */ #define ASYNCB_FIRST_KERNEL 22 #endif /* Masks */ #define ASYNC_HUP_NOTIFY (1U << ASYNCB_HUP_NOTIFY) #define ASYNC_SUSPENDED (1U << ASYNCB_SUSPENDED) #define ASYNC_FOURPORT (1U << ASYNCB_FOURPORT) #define ASYNC_SAK (1U << ASYNCB_SAK) #define ASYNC_SPLIT_TERMIOS (1U << ASYNCB_SPLIT_TERMIOS) #define ASYNC_SPD_HI (1U << ASYNCB_SPD_HI) #define ASYNC_SPD_VHI (1U << ASYNCB_SPD_VHI) #define ASYNC_SKIP_TEST (1U << ASYNCB_SKIP_TEST) #define ASYNC_AUTO_IRQ (1U << ASYNCB_AUTO_IRQ) #define ASYNC_SESSION_LOCKOUT (1U << ASYNCB_SESSION_LOCKOUT) #define ASYNC_PGRP_LOCKOUT (1U << ASYNCB_PGRP_LOCKOUT) #define ASYNC_CALLOUT_NOHUP (1U << ASYNCB_CALLOUT_NOHUP) #define ASYNC_HARDPPS_CD (1U << ASYNCB_HARDPPS_CD) #define ASYNC_SPD_SHI (1U << ASYNCB_SPD_SHI) #define ASYNC_LOW_LATENCY (1U << ASYNCB_LOW_LATENCY) #define ASYNC_BUGGY_UART (1U << ASYNCB_BUGGY_UART) #define ASYNC_AUTOPROBE (1U << ASYNCB_AUTOPROBE) #define ASYNC_MAGIC_MULTIPLIER (1U << ASYNCB_MAGIC_MULTIPLIER) #define ASYNC_FLAGS ((1U << (ASYNCB_LAST_USER + 1)) - 1) #define ASYNC_DEPRECATED (ASYNC_SESSION_LOCKOUT | ASYNC_PGRP_LOCKOUT | \ ASYNC_CALLOUT_NOHUP | ASYNC_AUTOPROBE) #define ASYNC_USR_MASK (ASYNC_SPD_MASK|ASYNC_CALLOUT_NOHUP| \ ASYNC_LOW_LATENCY) #define ASYNC_SPD_CUST (ASYNC_SPD_HI|ASYNC_SPD_VHI) #define ASYNC_SPD_WARP (ASYNC_SPD_HI|ASYNC_SPD_SHI) #define ASYNC_SPD_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI) #ifndef _KERNEL_ /* These flags are no longer used (and were always masked from userspace) */ #define ASYNC_INITIALIZED (1U << ASYNCB_INITIALIZED) #define ASYNC_NORMAL_ACTIVE (1U << ASYNCB_NORMAL_ACTIVE) #define ASYNC_BOOT_AUTOCONF (1U << ASYNCB_BOOT_AUTOCONF) #define ASYNC_CLOSING (1U << ASYNCB_CLOSING) #define ASYNC_CTS_FLOW (1U << ASYNCB_CTS_FLOW) #define ASYNC_CHECK_CD (1U << ASYNCB_CHECK_CD) #define ASYNC_SHARE_IRQ (1U << ASYNCB_SHARE_IRQ) #define ASYNC_CONS_FLOW (1U << ASYNCB_CONS_FLOW) #define ASYNC_INTERNAL_FLAGS (~((1U << ASYNCB_FIRST_KERNEL) - 1)) #endif #endif