root/include/uapi/linux/tty_flags.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _LINUX_TTY_FLAGS_H
   3 #define _LINUX_TTY_FLAGS_H
   4 
   5 /*
   6  * Definitions for async_struct (and serial_struct) flags field also
   7  * shared by the tty_port flags structures.
   8  *
   9  * Define ASYNCB_* for convenient use with {test,set,clear}_bit.
  10  *
  11  * Bits [0..ASYNCB_LAST_USER] are userspace defined/visible/changeable
  12  * [x] in the bit comments indicates the flag is defunct and no longer used.
  13  */
  14 #define ASYNCB_HUP_NOTIFY        0 /* Notify getty on hangups and closes
  15                                     * on the callout port */
  16 #define ASYNCB_FOURPORT          1 /* Set OUT1, OUT2 per AST Fourport settings */
  17 #define ASYNCB_SAK               2 /* Secure Attention Key (Orange book) */
  18 #define ASYNCB_SPLIT_TERMIOS     3 /* [x] Separate termios for dialin/callout */
  19 #define ASYNCB_SPD_HI            4 /* Use 57600 instead of 38400 bps */
  20 #define ASYNCB_SPD_VHI           5 /* Use 115200 instead of 38400 bps */
  21 #define ASYNCB_SKIP_TEST         6 /* Skip UART test during autoconfiguration */
  22 #define ASYNCB_AUTO_IRQ          7 /* Do automatic IRQ during
  23                                     * autoconfiguration */
  24 #define ASYNCB_SESSION_LOCKOUT   8 /* [x] Lock out cua opens based on session */
  25 #define ASYNCB_PGRP_LOCKOUT      9 /* [x] Lock out cua opens based on pgrp */
  26 #define ASYNCB_CALLOUT_NOHUP    10 /* [x] Don't do hangups for cua device */
  27 #define ASYNCB_HARDPPS_CD       11 /* Call hardpps when CD goes high  */
  28 #define ASYNCB_SPD_SHI          12 /* Use 230400 instead of 38400 bps */
  29 #define ASYNCB_LOW_LATENCY      13 /* Request low latency behaviour */
  30 #define ASYNCB_BUGGY_UART       14 /* This is a buggy UART, skip some safety
  31                                     * checks.  Note: can be dangerous! */
  32 #define ASYNCB_AUTOPROBE        15 /* [x] Port was autoprobed by PCI/PNP code */
  33 #define ASYNCB_MAGIC_MULTIPLIER 16 /* Use special CLK or divisor */
  34 #define ASYNCB_LAST_USER        16
  35 
  36 /*
  37  * Internal flags used only by kernel (read-only)
  38  *
  39  * WARNING: These flags are no longer used and have been superceded by the
  40  *          TTY_PORT_ flags in the iflags field (and not userspace-visible)
  41  */
  42 #ifndef _KERNEL_
  43 #define ASYNCB_INITIALIZED      31 /* Serial port was initialized */
  44 #define ASYNCB_SUSPENDED        30 /* Serial port is suspended */
  45 #define ASYNCB_NORMAL_ACTIVE    29 /* Normal device is active */
  46 #define ASYNCB_BOOT_AUTOCONF    28 /* Autoconfigure port on bootup */
  47 #define ASYNCB_CLOSING          27 /* Serial port is closing */
  48 #define ASYNCB_CTS_FLOW         26 /* Do CTS flow control */
  49 #define ASYNCB_CHECK_CD         25 /* i.e., CLOCAL */
  50 #define ASYNCB_SHARE_IRQ        24 /* for multifunction cards, no longer used */
  51 #define ASYNCB_CONS_FLOW        23 /* flow control for console  */
  52 #define ASYNCB_FIRST_KERNEL     22
  53 #endif
  54 
  55 /* Masks */
  56 #define ASYNC_HUP_NOTIFY        (1U << ASYNCB_HUP_NOTIFY)
  57 #define ASYNC_SUSPENDED         (1U << ASYNCB_SUSPENDED)
  58 #define ASYNC_FOURPORT          (1U << ASYNCB_FOURPORT)
  59 #define ASYNC_SAK               (1U << ASYNCB_SAK)
  60 #define ASYNC_SPLIT_TERMIOS     (1U << ASYNCB_SPLIT_TERMIOS)
  61 #define ASYNC_SPD_HI            (1U << ASYNCB_SPD_HI)
  62 #define ASYNC_SPD_VHI           (1U << ASYNCB_SPD_VHI)
  63 #define ASYNC_SKIP_TEST         (1U << ASYNCB_SKIP_TEST)
  64 #define ASYNC_AUTO_IRQ          (1U << ASYNCB_AUTO_IRQ)
  65 #define ASYNC_SESSION_LOCKOUT   (1U << ASYNCB_SESSION_LOCKOUT)
  66 #define ASYNC_PGRP_LOCKOUT      (1U << ASYNCB_PGRP_LOCKOUT)
  67 #define ASYNC_CALLOUT_NOHUP     (1U << ASYNCB_CALLOUT_NOHUP)
  68 #define ASYNC_HARDPPS_CD        (1U << ASYNCB_HARDPPS_CD)
  69 #define ASYNC_SPD_SHI           (1U << ASYNCB_SPD_SHI)
  70 #define ASYNC_LOW_LATENCY       (1U << ASYNCB_LOW_LATENCY)
  71 #define ASYNC_BUGGY_UART        (1U << ASYNCB_BUGGY_UART)
  72 #define ASYNC_AUTOPROBE         (1U << ASYNCB_AUTOPROBE)
  73 #define ASYNC_MAGIC_MULTIPLIER  (1U << ASYNCB_MAGIC_MULTIPLIER)
  74 
  75 #define ASYNC_FLAGS             ((1U << (ASYNCB_LAST_USER + 1)) - 1)
  76 #define ASYNC_DEPRECATED        (ASYNC_SESSION_LOCKOUT | ASYNC_PGRP_LOCKOUT | \
  77                 ASYNC_CALLOUT_NOHUP | ASYNC_AUTOPROBE)
  78 #define ASYNC_USR_MASK          (ASYNC_SPD_MASK|ASYNC_CALLOUT_NOHUP| \
  79                 ASYNC_LOW_LATENCY)
  80 #define ASYNC_SPD_CUST          (ASYNC_SPD_HI|ASYNC_SPD_VHI)
  81 #define ASYNC_SPD_WARP          (ASYNC_SPD_HI|ASYNC_SPD_SHI)
  82 #define ASYNC_SPD_MASK          (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI)
  83 
  84 #ifndef _KERNEL_
  85 /* These flags are no longer used (and were always masked from userspace) */
  86 #define ASYNC_INITIALIZED       (1U << ASYNCB_INITIALIZED)
  87 #define ASYNC_NORMAL_ACTIVE     (1U << ASYNCB_NORMAL_ACTIVE)
  88 #define ASYNC_BOOT_AUTOCONF     (1U << ASYNCB_BOOT_AUTOCONF)
  89 #define ASYNC_CLOSING           (1U << ASYNCB_CLOSING)
  90 #define ASYNC_CTS_FLOW          (1U << ASYNCB_CTS_FLOW)
  91 #define ASYNC_CHECK_CD          (1U << ASYNCB_CHECK_CD)
  92 #define ASYNC_SHARE_IRQ         (1U << ASYNCB_SHARE_IRQ)
  93 #define ASYNC_CONS_FLOW         (1U << ASYNCB_CONS_FLOW)
  94 #define ASYNC_INTERNAL_FLAGS    (~((1U << ASYNCB_FIRST_KERNEL) - 1))
  95 #endif
  96 
  97 #endif