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- Committer: Bazaar Package Importer
- Author(s): Sam Johnston
- Date: 2004-02-04 17:52:26 UTC
- Revision ID: james.westby@ubuntu.com-20040204175226-87kz4bzs1nimji68
Tags: upstream-1.3.1
Import upstream version 1.3.1
- files added:
- crypto
- doc
- keymaps
added
removed
serial.c
1
#include <unistd.h>
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#include <fcntl.h>
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#include <termios.h>
4
#include "rdesktop.h"
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#define FILE_DEVICE_SERIAL_PORT 0x1b
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#define SERIAL_SET_BAUD_RATE 1
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#define SERIAL_SET_QUEUE_SIZE 2
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#define SERIAL_SET_LINE_CONTROL 3
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#define SERIAL_SET_BREAK_ON 4
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#define SERIAL_SET_BREAK_OFF 5
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#define SERIAL_IMMEDIATE_CHAR 6
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#define SERIAL_SET_TIMEOUTS 7
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#define SERIAL_GET_TIMEOUTS 8
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#define SERIAL_SET_DTR 9
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#define SERIAL_CLR_DTR 10
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#define SERIAL_RESET_DEVICE 11
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#define SERIAL_SET_RTS 12
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#define SERIAL_CLR_RTS 13
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#define SERIAL_SET_XOFF 14
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#define SERIAL_SET_XON 15
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#define SERIAL_GET_WAIT_MASK 16
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#define SERIAL_SET_WAIT_MASK 17
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#define SERIAL_WAIT_ON_MASK 18
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#define SERIAL_PURGE 19
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#define SERIAL_GET_BAUD_RATE 20
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#define SERIAL_GET_LINE_CONTROL 21
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#define SERIAL_GET_CHARS 22
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#define SERIAL_SET_CHARS 23
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#define SERIAL_GET_HANDFLOW 24
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#define SERIAL_SET_HANDFLOW 25
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#define SERIAL_GET_MODEMSTATUS 26
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#define SERIAL_GET_COMMSTATUS 27
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#define SERIAL_XOFF_COUNTER 28
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#define SERIAL_GET_PROPERTIES 29
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#define SERIAL_GET_DTRRTS 30
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#define SERIAL_LSRMST_INSERT 31
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#define SERIAL_CONFIG_SIZE 32
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#define SERIAL_GET_COMMCONFIG 33
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#define SERIAL_SET_COMMCONFIG 34
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#define SERIAL_GET_STATS 35
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#define SERIAL_CLEAR_STATS 36
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#define SERIAL_GET_MODEM_CONTROL 37
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#define SERIAL_SET_MODEM_CONTROL 38
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#define SERIAL_SET_FIFO_CONTROL 39
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#define STOP_BITS_1 0
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#define STOP_BITS_2 2
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#define NO_PARITY 0
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#define ODD_PARITY 1
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#define EVEN_PARITY 2
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int serial_fd;
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struct termios termios;
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int dtr;
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uint32 baud_rate;
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uint32 queue_in_size, queue_out_size;
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uint32 wait_mask;
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uint8 stop_bits, parity, word_length;
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static BOOL
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get_termios(void)
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{
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speed_t speed;
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if (tcgetattr(serial_fd, &termios) == -1)
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return False;
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speed = cfgetispeed(&termios);
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switch (speed)
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{
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#ifdef B75
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case B75:
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baud_rate = 75;
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break;
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#endif
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#ifdef B110
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case B110:
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baud_rate = 110;
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break;
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#endif
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#ifdef B134
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case B134:
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baud_rate = 134;
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break;
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#endif
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#ifdef B150
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case B150:
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baud_rate = 150;
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break;
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#endif
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#ifdef B300
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case B300:
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baud_rate = 300;
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break;
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#endif
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#ifdef B600
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case B600:
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baud_rate = 600;
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break;
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#endif
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#ifdef B1200
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case B1200:
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baud_rate = 1200;
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break;
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#endif
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#ifdef B1800
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case B1800:
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baud_rate = 1800;
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break;
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#endif
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#ifdef B2400
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case B2400:
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baud_rate = 2400;
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break;
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#endif
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#ifdef B4800
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case B4800:
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baud_rate = 4800;
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break;
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#endif
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#ifdef B9600
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case B9600:
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baud_rate = 9600;
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break;
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#endif
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#ifdef B19200
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case B19200:
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baud_rate = 19200;
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break;
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#endif
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#ifdef B38400
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case B38400:
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baud_rate = 38400;
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break;
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#endif
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#ifdef B57600
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case B57600:
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baud_rate = 57600;
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break;
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#endif
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#ifdef B115200
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case B115200:
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baud_rate = 115200;
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break;
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#endif
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default:
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baud_rate = 0;
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break;
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}
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speed = cfgetospeed(&termios);
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dtr = (speed == B0) ? 0 : 1;
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stop_bits = (termios.c_cflag & CSTOPB) ? STOP_BITS_2 : STOP_BITS_1;
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parity = (termios.
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c_cflag & PARENB) ? ((termios.
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c_cflag & PARODD) ? ODD_PARITY : EVEN_PARITY) : NO_PARITY;
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switch (termios.c_cflag & CSIZE)
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{
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case CS5:
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word_length = 5;
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break;
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case CS6:
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word_length = 6;
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break;
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case CS7:
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word_length = 7;
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break;
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default:
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word_length = 8;
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break;
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}
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return True;
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}
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static void
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set_termios(void)
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{
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speed_t speed;
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switch (baud_rate)
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{
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#ifdef B75
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case 75:
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speed = B75;
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break;
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#endif
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#ifdef B110
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case 110:
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speed = B110;
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break;
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#endif
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#ifdef B134
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case 134:
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speed = B134;
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break;
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#endif
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#ifdef B150
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case 150:
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speed = B150;
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break;
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#endif
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#ifdef B300
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case 300:
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speed = B300;
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break;
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#endif
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#ifdef B600
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case 600:
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speed = B600;
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break;
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#endif
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#ifdef B1200
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case 1200:
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speed = B1200;
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break;
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#endif
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#ifdef B1800
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case 1800:
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speed = B1800;
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break;
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#endif
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#ifdef B2400
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case 2400:
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speed = B2400;
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break;
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#endif
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#ifdef B4800
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case 4800:
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speed = B4800;
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break;
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#endif
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#ifdef B9600
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case 9600:
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speed = B9600;
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break;
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#endif
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#ifdef B19200
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case 19200:
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speed = B19200;
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break;
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#endif
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#ifdef B38400
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case 38400:
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speed = B38400;
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break;
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#endif
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#ifdef B57600
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case 57600:
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speed = B57600;
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break;
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#endif
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#ifdef B115200
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case 115200:
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speed = B115200;
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break;
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#endif
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default:
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speed = B0;
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break;
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}
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/* on systems with separate ispeed and ospeed, we can remember the speed
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in ispeed while changing DTR with ospeed */
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cfsetispeed(&termios, speed);
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cfsetospeed(&termios, dtr ? speed : 0);
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termios.c_cflag &= ~(CSTOPB | PARENB | PARODD | CSIZE);
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switch (stop_bits)
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{
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case STOP_BITS_2:
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termios.c_cflag |= CSTOPB;
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break;
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}
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switch (parity)
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{
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case EVEN_PARITY:
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termios.c_cflag |= PARENB;
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break;
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case ODD_PARITY:
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termios.c_cflag |= PARENB | PARODD;
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break;
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}
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switch (word_length)
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{
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case 5:
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termios.c_cflag |= CS5;
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break;
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case 6:
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termios.c_cflag |= CS6;
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break;
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case 7:
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termios.c_cflag |= CS7;
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break;
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default:
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termios.c_cflag |= CS8;
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break;
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}
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tcsetattr(serial_fd, TCSANOW, &termios);
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}
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static NTSTATUS
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serial_create(HANDLE * handle)
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{
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/* XXX do we have to handle concurrent open attempts? */
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serial_fd = open("/dev/ttyS0", O_RDWR);
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if (serial_fd == -1)
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return STATUS_ACCESS_DENIED;
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if (!get_termios())
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return STATUS_ACCESS_DENIED;
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*handle = 0;
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return STATUS_SUCCESS;
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}
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static NTSTATUS
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serial_close(HANDLE handle)
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{
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close(serial_fd);
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return STATUS_SUCCESS;
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}
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static NTSTATUS
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serial_read(HANDLE handle, uint8 * data, uint32 length, uint32 * result)
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{
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*result = read(serial_fd, data, length);
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return STATUS_SUCCESS;
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}
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static NTSTATUS
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serial_write(HANDLE handle, uint8 * data, uint32 length, uint32 * result)
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{
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*result = write(serial_fd, data, length);
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return STATUS_SUCCESS;
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}
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static NTSTATUS
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serial_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out)
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{
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uint32 result;
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uint8 immediate;
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if ((request >> 16) != FILE_DEVICE_SERIAL_PORT)
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return STATUS_INVALID_PARAMETER;
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/* extract operation */
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request >>= 2;
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request &= 0xfff;
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printf("SERIAL IOCTL %d\n", request);
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switch (request)
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{
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case SERIAL_SET_BAUD_RATE:
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in_uint32_le(in, baud_rate);
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set_termios();
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break;
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case SERIAL_GET_BAUD_RATE:
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out_uint32_le(out, baud_rate);
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break;
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case SERIAL_SET_QUEUE_SIZE:
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in_uint32_le(in, queue_in_size);
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in_uint32_le(in, queue_out_size);
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break;
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case SERIAL_SET_LINE_CONTROL:
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in_uint8(in, stop_bits);
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in_uint8(in, parity);
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in_uint8(in, word_length);
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set_termios();
377
break;
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case SERIAL_GET_LINE_CONTROL:
379
out_uint8(out, stop_bits);
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out_uint8(out, parity);
381
out_uint8(out, word_length);
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break;
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case SERIAL_IMMEDIATE_CHAR:
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in_uint8(in, immediate);
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serial_write(handle, &immediate, 1, &result);
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break;
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case SERIAL_CONFIG_SIZE:
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out_uint32_le(out, 0);
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break;
390
case SERIAL_GET_CHARS:
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out_uint8s(out, 6);
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break;
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case SERIAL_SET_CHARS:
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in_uint8s(in, 6);
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break;
396
case SERIAL_GET_HANDFLOW:
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out_uint32_le(out, 0);
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out_uint32_le(out, 3); /* Xon/Xoff */
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out_uint32_le(out, 0);
400
out_uint32_le(out, 0);
401
break;
402
case SERIAL_SET_HANDFLOW:
403
in_uint8s(in, 16);
404
break;
405
case SERIAL_SET_TIMEOUTS:
406
in_uint8s(in, 20);
407
break;
408
case SERIAL_GET_TIMEOUTS:
409
out_uint8s(out, 20);
410
break;
411
case SERIAL_GET_WAIT_MASK:
412
out_uint32(out, wait_mask);
413
break;
414
case SERIAL_SET_WAIT_MASK:
415
in_uint32(in, wait_mask);
416
break;
417
case SERIAL_SET_DTR:
418
dtr = 1;
419
set_termios();
420
break;
421
case SERIAL_CLR_DTR:
422
dtr = 0;
423
set_termios();
424
break;
425
#if 0
426
case SERIAL_WAIT_ON_MASK:
427
/* XXX implement me */
428
break;
429
case SERIAL_SET_BREAK_ON:
430
tcsendbreak(serial_fd, 0);
431
break;
432
case SERIAL_PURGE:
433
in_uint32(purge_mask);
434
/* tcflush */
435
break;
436
case SERIAL_RESET_DEVICE:
437
case SERIAL_SET_BREAK_OFF:
438
case SERIAL_SET_RTS:
439
case SERIAL_CLR_RTS:
440
case SERIAL_SET_XOFF:
441
case SERIAL_SET_XON:
442
/* ignore */
443
break;
444
#endif
445
446
default:
447
unimpl("SERIAL IOCTL %d\n", request);
448
return STATUS_INVALID_PARAMETER;
449
}
450
451
return STATUS_SUCCESS;
452
}
453
454
DEVICE_FNS serial_fns = {
455
serial_create,
456
serial_close,
457
serial_read,
458
serial_write,
459
serial_device_control
460
};
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