/** @file
    Macros and declarations for terminal oriented ioctls and
    I/O discipline.

    Copyright (c) 2016, Daryl McDaniel. All rights reserved.<BR>
    Copyright (c) 2012 - 2014, Intel Corporation. All rights reserved.<BR>
    This program and the accompanying materials are licensed and made available under
    the terms and conditions of the BSD License that accompanies this distribution.
    The full text of the license may be found at
    http://opensource.org/licenses/bsd-license.

    THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
    WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

 * Copyright (c) 1988, 1989, 1993, 1994
 *  The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *  @(#)termios.h 8.3 (Berkeley) 3/28/94
    NetBSD: termios.h,v 1.29 2005/12/11 12:25:21 christos Exp
**/
#ifndef _SYS_TERMIOS_H_
#define _SYS_TERMIOS_H_

#include <sys/ansi.h>
#include <sys/featuretest.h>

/*  Special Control Characters
 *
 * Index into c_cc[] character array.
 */
typedef enum {
/* Name     Enabled by */
  VTABLEN,  /* OXTABS - Length between TAB stops. */
  VEOF,     /* ICANON */
  VEOL,     /* ICANON */
  VERASE,   /* ICANON */
  VKILL,    /* ICANON */
  VINTR,    /* ISIG */
  VQUIT,    /* ISIG */
  VMIN,     /* !ICANON */
  VTIME,    /* !ICANON */

  /* Extensions from BSD and POSIX -- Not yet implemented for UEFI */
  VWERASE,   /* IEXTEN, ICANON -- Erase the WORD to the left of the cursor */
  VREPRINT,  /* IEXTEN, ICANON -- Re-draw the current line (input buffer) */
  VLNEXT,    /* IEXTEN, ICANON -- Input the next character literally */
  VDISCARD,  /* IEXTEN -- Toggle.  Discards output display until toggled. */

  /* NCCS must always be the last member of this enum. */
  NCCS      /* Number of control characters in c_cc[]  */
} CCC_INDEX;

#define _POSIX_VDISABLE ((unsigned char)'\377')

#define CCEQ(val, c)  (c == val ? val != _POSIX_VDISABLE : 0)

/*
 * Input flags - software input processing
  c_iflag
*/
#define   INLCR     0x0001  /* map NL into CR */
#define   IGNCR     0x0002  /* ignore CR */
#define   ICRNL     0x0004  /* map CR to NL (ala CRMOD) */
#define   IGNSPEC   0x0008  /* Ignore function, control, and other non-printing special keys. */
#ifdef  HAVE_DA_SERIAL
  #define ISTRIP    0x0010  /* strip 8th bit off chars */
  #define IGNBRK    0x0020  /* ignore BREAK condition */
  #define BRKINT    0x0040  /* map BREAK to SIGINTR */
  #define IRESRV1   0x0080
  #define IGNPAR    0x0100  /* ignore (discard) parity errors */
  #define PARMRK    0x0200  /* mark parity and framing errors */
  #define INPCK     0x0400  /* enable checking of parity errors */
  #define IXON      0x0800  /* enable output flow control */
  #define IXOFF     0x1000  /* enable input flow control */
  #define IXANY     0x2000  /* any char will restart after stop */
#endif  /* HAVE_DA_SERIAL */

/*
 * Output flags - software output processing
  c_oflag
 */
#define OPOST     0x0001  /* enable following output processing */
#define ONLCR     0x0002  /* map NL to CR-NL (ala CRMOD) */
#define OXTABS    0x0004  /* expand tabs to spaces */
#define ONOEOT    0x0008  /* discard EOT's (^D) on output */
#define OCRNL     0x0010  /* map CR to NL */
#define ONOCR     0x0020  /* discard CR's when on column 0 */
#define ONLRET    0x0040  /* move to column 0 on CR */
#define OCTRL     0x0080  /* Map control characters to the sequence ^C */

/*
 * Control flags - hardware control of terminal
  c_cflag
 */
#ifdef  HAVE_DA_SERIAL
  #define CIGNORE   0x0001      /* ignore control flags */
  #define CSIZE     0x0300      /* character size mask */
  #define     CS5       0x0000      /* 5 bits (pseudo) */
  #define     CS6       0x0100      /* 6 bits */
  #define     CS7       0x0200      /* 7 bits */
  #define     CS8       0x0300      /* 8 bits */
  #define CSTOPB    0x0400      /* send 2 stop bits, else 1 */
  #define CREAD     0x0800      /* enable receiver */
  #define PARENB    0x1000      /* parity enable */
  #define PARODD    0x2000      /* odd parity, else even */
  #define HUPCL     0x4000      /* hang up on last close */
  #define CLOCAL    0x8000      /* ignore modem status lines */
#endif


/*
 * "Local" flags - dumping ground for other state
 *
 * Warning: some flags in this structure begin with
 * the letter "I" and look like they belong in the
 * input flag.
 */
#define ECHO      0x0001    /* enable echoing */
#define ECHOE     0x0002    /* visually erase chars */
#define ECHOK     0x0004    /* echo NL after line kill */
#define ECHONL    0x0008    /* echo NL even if ECHO is off */
#define ISIG      0x0010    /* enable signals INTR, QUIT, [D]SUSP */
#define ICANON    0x0020    /* canonicalize input lines */
#define IEXTEN    0x0040    /* enable Extensions */
#define SKIP_1    0x0100    /* Currently unused */
#define TOSTOP    0x0200    /* stop background jobs on output */
#define PENDIN    0x0400    /* re-echo input buffer at next read */
#define NOFLSH    0x0800    /* don't flush output on signal */
#define FLUSHO    0x1000    /* output being flushed (state) */

typedef UINT8   cc_t;
typedef UINT16  tcflag_t;
typedef UINT32  speed_t;

struct termios {
  INT32     c_ispeed;   /* input speed    - Use a signed type instead of speed_t */
  INT32     c_ospeed;   /* output speed   - to ease integer promotion when used. */
  tcflag_t  c_iflag;    /* input flags */
  tcflag_t  c_oflag;    /* output flags */
  tcflag_t  c_cflag;    /* control flags */
  tcflag_t  c_lflag;    /* local flags */
  cc_t      c_cc[NCCS]; /* control chars */
};

/*
 * Commands passed to tcsetattr() for setting the termios structure.
 */
#define TCSANOW     0       /* make change immediate */
#define TCSADRAIN   1       /* drain output, then change */
#define TCSAFLUSH   2       /* drain output, flush input */
#define TCSASOFT    0x10    /* flag - don't alter h.w. state */

/*
 * Standard speeds
 */
#define B0            0
#define B50          50
#define B75          75
#define B110        110
#define B134        134
#define B150        150
#define B200        200
#define B300        300
#define B600        600
#define B1200      1200
#define B1800      1800
#define B2400      2400
#define B4800      4800
#define B9600      9600
#define B19200    19200
#define B38400    38400

// Extended speed definitions
#define B7200      7200
#define B14400    14400
#define B28800    28800
#define B57600    57600
#define B76800    76800
#define B115200  115200
#define B230400  230400
#define B460800  460800
#define B921600  921600

#define TCIFLUSH  1
#define TCOFLUSH  2
#define TCIOFLUSH 3
#define TCOOFF    1
#define TCOON     2
#define TCIOFF    3
#define TCION     4

#include <sys/EfiCdefs.h>

__BEGIN_DECLS

/** Get input baud rate.

    Extracts the input baud rate from the termios structure pointed to by the
    pTermios argument.

    @param[in]  pTermios  A pointer to the termios structure from which to extract
                          the input baud rate.

    @return The value of the input speed is returned exactly as it is contained
            in the termios structure, without interpretation.
**/
speed_t cfgetispeed (const struct termios *);

/** Get output baud rate.

    Extracts the output baud rate from the termios structure pointed to by the
    pTermios argument.

    @param[in]  pTermios  A pointer to the termios structure from which to extract
                          the output baud rate.

    @return The value of the output speed is returned exactly as it is contained
            in the termios structure, without interpretation.
**/
speed_t cfgetospeed (const struct termios *);

/** Set input baud rate.

    Replaces the input baud rate, in the termios structure pointed to by the
    pTermios argument, with the value of NewSpeed.

    @param[out]   pTermios  A pointer to the termios structure into which to set
                            the input baud rate.
    @param[in]    NewSpeed  The new input baud rate.

    @retval 0     The operation completed successfully.
    @retval -1    An error occurred and errno is set to indicate the error.
                    * EINVAL - The value of NewSpeed is outside the range of
                      possible speed values as specified in <sys/termios.h>.
**/
int     cfsetispeed (struct termios *, speed_t);

/** Set output baud rate.

    Replaces the output baud rate, in the termios structure pointed to by the
    pTermios argument, with the value of NewSpeed.

    @param[out]   pTermios  A pointer to the termios structure into which to set
                            the output baud rate.
    @param[in]    NewSpeed  The new output baud rate.

    @retval 0     The operation completed successfully.
    @retval -1    An error occurred and errno is set to indicate the error.
                    * EINVAL - The value of NewSpeed is outside the range of
                      possible speed values as specified in <sys/termios.h>.
**/
int     cfsetospeed (struct termios *, speed_t);

/** Get the parameters associated with an interactive IO device.

    Get the parameters associated with the device referred to by
    fd and store them into the termios structure referenced by pTermios.

    @param[in]    fd        The file descriptor for an open interactive IO device.
    @param[out]   pTermios  A pointer to a termios structure into which to store
                            attributes of the interactive IO device.

    @retval 0     The operation completed successfully.
    @retval -1    An error occurred and errno is set to indicate the error.
                    * EBADF - The fd argument is not a valid file descriptor.
                    * ENOTTY - The file associated with fd is not an interactive IO device.
**/
int     tcgetattr   (int fd, struct termios *pTermios);

/** Set the parameters associated with an interactive IO device.

    Set the parameters associated with the device referred to by
    fd to the values in the termios structure referenced by pTermios.

    Behavior is modified by the value of the OptAct parameter:
      * TCSANOW: The change shall occur immediately.
      * TCSADRAIN: The change shall occur after all output written to fd is
        transmitted. This action should be used when changing parameters which
        affect output.
      * TCSAFLUSH: The change shall occur after all output written to fd is
        transmitted, and all input so far received but not read shall be
        discarded before the change is made.

    @param[in]  fd        The file descriptor for an open interactive IO device.
    @param[in]  OptAct    Currently has no effect.
    @param[in]  pTermios  A pointer to a termios structure into which to retrieve
                          attributes to set in the interactive IO device.

    @retval 0     The operation completed successfully.
    @retval -1    An error occurred and errno is set to indicate the error.
                    * EBADF - The fd argument is not a valid file descriptor.
                    * ENOTTY - The file associated with fd is not an interactive IO device.
**/
int     tcsetattr   (int fd, int OptAct, const struct termios *pTermios);

/** Transmit pending output.


    @param[in]  fd        The file descriptor for an open interactive IO device.

    @retval 0     The operation completed successfully.
    @retval -1    An error occurred and errno is set to indicate the error.
                    * EBADF - The fd argument is not a valid file descriptor.
                    * ENOTTY - The file associated with fd is not an interactive IO device.
                    * EINTR - A signal interrupted tcdrain().
                    * ENOTSUP - This function is not supported.
**/
int     tcdrain     (int fd);

/** Suspend or restart the transmission or reception of data.

    This function will suspend or resume transmission or reception of data on
    the file referred to by fd, depending on the value of Action.

    @param[in]  fd        The file descriptor of an open interactive IO device (terminal).
    @param[in]  Action    The action to be performed:
                            * TCOOFF - Suspend output.
                            * TCOON - Resume suspended output.
                            * TCIOFF - If fd refers to an IIO device, transmit a
                                      STOP character, which is intended to cause the
                                      terminal device to stop transmitting data.
                            * TCION - If fd refers to an IIO device, transmit a
                                      START character, which is intended to cause the
                                      terminal device to start transmitting data.

    @retval 0     The operation completed successfully.
    @retval -1    An error occurred and errno is set to indicate the error.
                    * EBADF - The fd argument is not a valid file descriptor.
                    * ENOTTY - The file associated with fd is not an interactive IO device.
                    * EINVAL - The Action argument is not a supported value.
                    * ENOTSUP - This function is not supported.
**/
int     tcflow      (int fd, int Action);

/** Discard non-transmitted output data, non-read input data, or both.


    @param[in]  fd              The file descriptor for an open interactive IO device.
    @param[in]  QueueSelector   The IO queue to be affected:
                                  * TCIFLUSH - If fd refers to a device open for input, flush
                                    pending input.  Otherwise error EINVAL.
                                  * TCOFLUSH - If fd refers to a device open for output,
                                    flush pending output.  Otherwise error EINVAL.
                                  * TCIOFLUSH - If fd refers to a device open for both
                                    input and output, flush pending input and output.
                                    Otherwise error EINVAL.

    @retval 0     The operation completed successfully.
    @retval -1    An error occurred and errno is set to indicate the error.
                    * EBADF - The fd argument is not a valid file descriptor.
                    * ENOTTY - The file associated with fd is not an interactive IO device.
                    * EINVAL - The QueueSelector argument is not a supported value.
                    * ENOTSUP - This function is not supported.
**/
int     tcflush     (int fd, int QueueSelector);

//int     tcsendbreak (int, int);
//pid_t   tcgetsid    (int);

//void    cfmakeraw   (struct termios *);
//int     cfsetspeed  (struct termios *, speed_t);
__END_DECLS

/*  Input values for UEFI Keyboard Scan Codes.

    The UEFI Keyboard Scan Codes are mapped into the upper range of the Unicode
    Private Use Area so that the characters can be inserted into the input stream
    and treated the same as any other character.

    These values are only used for input.  If these codes are output to the
    console, or another interactive I/O device, the behavior will depend upon
    the current locale and UEFI character set loaded.
*/
typedef enum {
  TtySpecKeyMin = 0xF7F0,
  /* This area is reserved for use by internal I/O software.
      At least 4 values must exist between TtySpecKeyMin and TtyFunKeyMin.
  */
  TtyFunKeyMin  = 0xF7FA,
  TtyKeyEject   = 0xF7FA,
  TtyRecovery,         TtyToggleDisplay,    TtyHibernate,
  TtySuspend,          TtyBrightnessDown,   TtyBrightnessUp,
  TtyVolumeDown = 0xF87F,
  TtyVolumeUp,         TtyMute,
  TtyF24        = 0xF88D,
  TtyF23,              TtyF22,              TtyF21,              TtyF20,
  TtyF19,              TtyF18,              TtyF17,              TtyF16,
  TtyF15,              TtyF14,              TtyF13,
  TtyEscape     = 0xF8E9,
  TtyF12,              TtyF11,              TtyF10,              TtyF9,
  TtyF8,               TtyF7,               TtyF6,               TtyF5,
  TtyF4,               TtyF3,               TtyF2,               TtyF1,
  TtyPageDown,         TtyPageUp,           TtyDelete,           TtyInsert,
  TtyEnd,              TtyHome,             TtyLeftArrow,        TtyRightArrow,
  TtyDownArrow,
  TtyUpArrow    = 0xF8FF,
  TtyFunKeyMax  = 0xF900
} TtyFunKey;

// Non-UEFI character definitions
#define CHAR_EOT    0x0004        /* End of Text (EOT) character -- Unix End-of-File character */
#define CHAR_SUB    0x001a        /* MSDOS End-of-File character */
#define CHAR_ESC    0x001b        /* Escape (ESC) character */

#endif /* !_SYS_TERMIOS_H_ */
