linux/include/uapi/linux/tty_flags.h
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   1#ifndef _LINUX_TTY_FLAGS_H
   2#define _LINUX_TTY_FLAGS_H
   3
   4/*
   5 * Definitions for async_struct (and serial_struct) flags field also
   6 * shared by the tty_port flags structures.
   7 *
   8 * Define ASYNCB_* for convenient use with {test,set,clear}_bit.
   9 *
  10 * Bits [0..ASYNCB_LAST_USER] are userspace defined/visible/changeable
  11 * [x] in the bit comments indicates the flag is defunct and no longer used.
  12 */
  13#define ASYNCB_HUP_NOTIFY        0 /* Notify getty on hangups and closes
  14                                    * on the callout port */
  15#define ASYNCB_FOURPORT          1 /* Set OU1, OUT2 per AST Fourport settings */
  16#define ASYNCB_SAK               2 /* Secure Attention Key (Orange book) */
  17#define ASYNCB_SPLIT_TERMIOS     3 /* [x] Separate termios for dialin/callout */
  18#define ASYNCB_SPD_HI            4 /* Use 56000 instead of 38400 bps */
  19#define ASYNCB_SPD_VHI           5 /* Use 115200 instead of 38400 bps */
  20#define ASYNCB_SKIP_TEST         6 /* Skip UART test during autoconfiguration */
  21#define ASYNCB_AUTO_IRQ          7 /* Do automatic IRQ during
  22                                    * autoconfiguration */
  23#define ASYNCB_SESSION_LOCKOUT   8 /* [x] Lock out cua opens based on session */
  24#define ASYNCB_PGRP_LOCKOUT      9 /* [x] Lock out cua opens based on pgrp */
  25#define ASYNCB_CALLOUT_NOHUP    10 /* [x] Don't do hangups for cua device */
  26#define ASYNCB_HARDPPS_CD       11 /* Call hardpps when CD goes high  */
  27#define ASYNCB_SPD_SHI          12 /* Use 230400 instead of 38400 bps */
  28#define ASYNCB_LOW_LATENCY      13 /* Request low latency behaviour */
  29#define ASYNCB_BUGGY_UART       14 /* This is a buggy UART, skip some safety
  30                                    * checks.  Note: can be dangerous! */
  31#define ASYNCB_AUTOPROBE        15 /* [x] Port was autoprobed by PCI/PNP code */
  32#define ASYNCB_MAGIC_MULTIPLIER 16 /* Use special CLK or divisor */
  33#define ASYNCB_LAST_USER        16
  34
  35/* Internal flags used only by kernel */
  36#define ASYNCB_INITIALIZED      31 /* Serial port was initialized */
  37#define ASYNCB_SUSPENDED        30 /* Serial port is suspended */
  38#define ASYNCB_NORMAL_ACTIVE    29 /* Normal device is active */
  39#define ASYNCB_BOOT_AUTOCONF    28 /* Autoconfigure port on bootup */
  40#define ASYNCB_CLOSING          27 /* Serial port is closing */
  41#define ASYNCB_CTS_FLOW         26 /* Do CTS flow control */
  42#define ASYNCB_CHECK_CD         25 /* i.e., CLOCAL */
  43#define ASYNCB_SHARE_IRQ        24 /* for multifunction cards, no longer used */
  44#define ASYNCB_CONS_FLOW        23 /* flow control for console  */
  45#define ASYNCB_FIRST_KERNEL     22
  46
  47#define ASYNC_HUP_NOTIFY        (1U << ASYNCB_HUP_NOTIFY)
  48#define ASYNC_SUSPENDED         (1U << ASYNCB_SUSPENDED)
  49#define ASYNC_FOURPORT          (1U << ASYNCB_FOURPORT)
  50#define ASYNC_SAK               (1U << ASYNCB_SAK)
  51#define ASYNC_SPLIT_TERMIOS     (1U << ASYNCB_SPLIT_TERMIOS)
  52#define ASYNC_SPD_HI            (1U << ASYNCB_SPD_HI)
  53#define ASYNC_SPD_VHI           (1U << ASYNCB_SPD_VHI)
  54#define ASYNC_SKIP_TEST         (1U << ASYNCB_SKIP_TEST)
  55#define ASYNC_AUTO_IRQ          (1U << ASYNCB_AUTO_IRQ)
  56#define ASYNC_SESSION_LOCKOUT   (1U << ASYNCB_SESSION_LOCKOUT)
  57#define ASYNC_PGRP_LOCKOUT      (1U << ASYNCB_PGRP_LOCKOUT)
  58#define ASYNC_CALLOUT_NOHUP     (1U << ASYNCB_CALLOUT_NOHUP)
  59#define ASYNC_HARDPPS_CD        (1U << ASYNCB_HARDPPS_CD)
  60#define ASYNC_SPD_SHI           (1U << ASYNCB_SPD_SHI)
  61#define ASYNC_LOW_LATENCY       (1U << ASYNCB_LOW_LATENCY)
  62#define ASYNC_BUGGY_UART        (1U << ASYNCB_BUGGY_UART)
  63#define ASYNC_AUTOPROBE         (1U << ASYNCB_AUTOPROBE)
  64#define ASYNC_MAGIC_MULTIPLIER  (1U << ASYNCB_MAGIC_MULTIPLIER)
  65
  66#define ASYNC_FLAGS             ((1U << (ASYNCB_LAST_USER + 1)) - 1)
  67#define ASYNC_DEPRECATED        (ASYNC_SESSION_LOCKOUT | ASYNC_PGRP_LOCKOUT | \
  68                ASYNC_CALLOUT_NOHUP | ASYNC_AUTOPROBE)
  69#define ASYNC_USR_MASK          (ASYNC_SPD_MASK|ASYNC_CALLOUT_NOHUP| \
  70                ASYNC_LOW_LATENCY)
  71#define ASYNC_SPD_CUST          (ASYNC_SPD_HI|ASYNC_SPD_VHI)
  72#define ASYNC_SPD_WARP          (ASYNC_SPD_HI|ASYNC_SPD_SHI)
  73#define ASYNC_SPD_MASK          (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI)
  74
  75#define ASYNC_INITIALIZED       (1U << ASYNCB_INITIALIZED)
  76#define ASYNC_NORMAL_ACTIVE     (1U << ASYNCB_NORMAL_ACTIVE)
  77#define ASYNC_BOOT_AUTOCONF     (1U << ASYNCB_BOOT_AUTOCONF)
  78#define ASYNC_CLOSING           (1U << ASYNCB_CLOSING)
  79#define ASYNC_CTS_FLOW          (1U << ASYNCB_CTS_FLOW)
  80#define ASYNC_CHECK_CD          (1U << ASYNCB_CHECK_CD)
  81#define ASYNC_SHARE_IRQ         (1U << ASYNCB_SHARE_IRQ)
  82#define ASYNC_CONS_FLOW         (1U << ASYNCB_CONS_FLOW)
  83#define ASYNC_INTERNAL_FLAGS    (~((1U << ASYNCB_FIRST_KERNEL) - 1))
  84
  85#endif
  86