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TTYINIT

Structure for a tty device

Synopsis:

typedef struct ttyinit_entry {
    _Paddr64t               port;
    unsigned                port_shift;
    unsigned                intr;
    int                     baud;
    int                     isize;
    int                     osize;
    int                     csize;
    int                     c_cflag;
    int                     c_iflag;
    int                     c_lflag;
    int                     c_oflag;
    int                     fifo;
    int                     clk;
    int                     div;
    char                    name[TTY_NAME_MAX];
 {  TTYINIT;

Description:

A character driver shares the TTYINIT with the io=char library. This structure is used to initialize baud rate, input, output, canonical buffer sizes, termios flags, interrupts, etc.

The members include:

port

Contains addresses of device registers.

port_shift

Used to provide spacing between registers. For example:

• 0 — is for 8-bit registers
• 1 — is for 16-bit registers
• 2 — is for 32-bit registers

intr

The interrupt number associated with the device.

baud

The device's baud rate.

isize

The input buffer size.

osize

The output buffer size.

csize

The canonical buffer size.

c_cflag

See TTYDEV.

c_iflag

See TTYDEV.

c_lflag

See TTYDEV.

c_oflag

See TTYDEV.

fifo

See TTYDEV.

clk

The clock frequency is used with baud rate and divisor in stty.

div

The divisor is used with baud rate and clock in stty.

name

The name of the device.

Classification:

QNX Neutrino

See also:

TTYDEV