include/uapi/linux/tty_flags.h

   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 57600 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 /*
  36  * Internal flags used only by kernel (read-only)
  37  *
  38  * WARNING: These flags are no longer used and have been superceded by the
  39  *          TTY_PORT_ flags in the iflags field (and not userspace-visible)
  40  */
  41 #ifndef _KERNEL_
  42 #define ASYNCB_INITIALIZED      31 /* Serial port was initialized */
  43 #define ASYNCB_SUSPENDED        30 /* Serial port is suspended */
  44 #define ASYNCB_NORMAL_ACTIVE    29 /* Normal device is active */
  45 #define ASYNCB_BOOT_AUTOCONF    28 /* Autoconfigure port on bootup */
  46 #define ASYNCB_CLOSING          27 /* Serial port is closing */
  47 #define ASYNCB_CTS_FLOW         26 /* Do CTS flow control */
  48 #define ASYNCB_CHECK_CD         25 /* i.e., CLOCAL */
  49 #define ASYNCB_SHARE_IRQ        24 /* for multifunction cards, no longer used */
  50 #define ASYNCB_CONS_FLOW        23 /* flow control for console  */
  51 #define ASYNCB_FIRST_KERNEL     22
  52 #endif
  53
  54 /* Masks */
  55 #define ASYNC_HUP_NOTIFY        (1U << ASYNCB_HUP_NOTIFY)
  56 #define ASYNC_SUSPENDED         (1U << ASYNCB_SUSPENDED)
  57 #define ASYNC_FOURPORT          (1U << ASYNCB_FOURPORT)
  58 #define ASYNC_SAK               (1U << ASYNCB_SAK)
  59 #define ASYNC_SPLIT_TERMIOS     (1U << ASYNCB_SPLIT_TERMIOS)
  60 #define ASYNC_SPD_HI            (1U << ASYNCB_SPD_HI)
  61 #define ASYNC_SPD_VHI           (1U << ASYNCB_SPD_VHI)
  62 #define ASYNC_SKIP_TEST         (1U << ASYNCB_SKIP_TEST)
  63 #define ASYNC_AUTO_IRQ          (1U << ASYNCB_AUTO_IRQ)
  64 #define ASYNC_SESSION_LOCKOUT   (1U << ASYNCB_SESSION_LOCKOUT)
  65 #define ASYNC_PGRP_LOCKOUT      (1U << ASYNCB_PGRP_LOCKOUT)
  66 #define ASYNC_CALLOUT_NOHUP     (1U << ASYNCB_CALLOUT_NOHUP)
  67 #define ASYNC_HARDPPS_CD        (1U << ASYNCB_HARDPPS_CD)
  68 #define ASYNC_SPD_SHI           (1U << ASYNCB_SPD_SHI)
  69 #define ASYNC_LOW_LATENCY       (1U << ASYNCB_LOW_LATENCY)
  70 #define ASYNC_BUGGY_UART        (1U << ASYNCB_BUGGY_UART)
  71 #define ASYNC_AUTOPROBE         (1U << ASYNCB_AUTOPROBE)
  72 #define ASYNC_MAGIC_MULTIPLIER  (1U << ASYNCB_MAGIC_MULTIPLIER)
  73
  74 #define ASYNC_FLAGS             ((1U << (ASYNCB_LAST_USER + 1)) - 1)
  75 #define ASYNC_DEPRECATED        (ASYNC_SESSION_LOCKOUT | ASYNC_PGRP_LOCKOUT | \
  76                 ASYNC_CALLOUT_NOHUP | ASYNC_AUTOPROBE)
  77 #define ASYNC_USR_MASK          (ASYNC_SPD_MASK|ASYNC_CALLOUT_NOHUP| \
  78                 ASYNC_LOW_LATENCY)
  79 #define ASYNC_SPD_CUST          (ASYNC_SPD_HI|ASYNC_SPD_VHI)
  80 #define ASYNC_SPD_WARP          (ASYNC_SPD_HI|ASYNC_SPD_SHI)
  81 #define ASYNC_SPD_MASK          (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI)
  82
  83 #ifndef _KERNEL_
  84 /* These flags are no longer used (and were always masked from userspace) */
  85 #define ASYNC_INITIALIZED       (1U << ASYNCB_INITIALIZED)
  86 #define ASYNC_NORMAL_ACTIVE     (1U << ASYNCB_NORMAL_ACTIVE)
  87 #define ASYNC_BOOT_AUTOCONF     (1U << ASYNCB_BOOT_AUTOCONF)
  88 #define ASYNC_CLOSING           (1U << ASYNCB_CLOSING)
  89 #define ASYNC_CTS_FLOW          (1U << ASYNCB_CTS_FLOW)
  90 #define ASYNC_CHECK_CD          (1U << ASYNCB_CHECK_CD)
  91 #define ASYNC_SHARE_IRQ         (1U << ASYNCB_SHARE_IRQ)
  92 #define ASYNC_CONS_FLOW         (1U << ASYNCB_CONS_FLOW)
  93 #define ASYNC_INTERNAL_FLAGS    (~((1U << ASYNCB_FIRST_KERNEL) - 1))
  94 #endif
  95
  96 #endif