xserver-multidpi/hw/xfree86/os-support/shared/posix_tty.c
Paulo Cesar Pereira de Andrade 49f77fff14 Rework symbol visibility for easier maintenance
Save in a few special cases, _X_EXPORT should not be used in C source
files. Instead, it should be used in headers, and the proper C source
include that header. Some special cases are symbols that need to be
shared between modules, but not expected to be used by external drivers,
and symbols that are accessible via LoaderSymbol/dlopen.

  This patch also adds conditionally some new sdk header files, depending
on extensions enabled. These files were added to match pattern for
other extensions/modules, that is, have the headers "deciding" symbol
visibility in the sdk. These headers are:
o Xext/panoramiXsrv.h, Xext/panoramiX.h
o fbpict.h (unconditionally)
o vidmodeproc.h
o mioverlay.h (unconditionally, used only by xaa)
o xfixes.h (unconditionally, symbols required by dri2)

  LoaderSymbol and similar functions now don't have different prototypes,
in loaderProcs.h and xf86Module.h, so that both headers can be included,
without the need of defining IN_LOADER.

  xf86NewInputDevice() device prototype readded to xf86Xinput.h, but
not exported (and with a comment about it).
2008-12-03 05:43:34 -02:00

678 lines
13 KiB
C

/*
* Copyright 1993-2003 by The XFree86 Project, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of the XFree86 Project shall
* not be used in advertising or otherwise to promote the sale, use or other
* dealings in this Software without prior written authorization from the
* XFree86 Project.
*/
/*
*
* Copyright (c) 1997 Metro Link Incorporated
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of the Metro Link shall not be
* used in advertising or otherwise to promote the sale, use or other dealings
* in this Software without prior written authorization from Metro Link.
*
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <X11/X.h>
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
static int
GetBaud (int baudrate)
{
#ifdef B300
if (baudrate == 300)
return B300;
#endif
#ifdef B1200
if (baudrate == 1200)
return B1200;
#endif
#ifdef B2400
if (baudrate == 2400)
return B2400;
#endif
#ifdef B4800
if (baudrate == 4800)
return B4800;
#endif
#ifdef B9600
if (baudrate == 9600)
return B9600;
#endif
#ifdef B19200
if (baudrate == 19200)
return B19200;
#endif
#ifdef B38400
if (baudrate == 38400)
return B38400;
#endif
#ifdef B57600
if (baudrate == 57600)
return B57600;
#endif
#ifdef B115200
if (baudrate == 115200)
return B115200;
#endif
#ifdef B230400
if (baudrate == 230400)
return B230400;
#endif
#ifdef B460800
if (baudrate == 460800)
return B460800;
#endif
return (0);
}
int
xf86OpenSerial (pointer options)
{
struct termios t;
int fd, i;
char *dev;
dev = xf86SetStrOption (options, "Device", NULL);
if (!dev)
{
xf86Msg (X_ERROR, "xf86OpenSerial: No Device specified.\n");
return (-1);
}
SYSCALL (fd = open (dev, O_RDWR | O_NONBLOCK));
if (fd == -1)
{
xf86Msg (X_ERROR,
"xf86OpenSerial: Cannot open device %s\n\t%s.\n",
dev, strerror (errno));
xfree(dev);
return (-1);
}
if (!isatty (fd))
{
#if 1
/* Allow non-tty devices to be opened. */
xfree(dev);
return (fd);
#else
xf86Msg (X_WARNING,
"xf86OpenSerial: Specified device %s is not a tty\n",
dev);
SYSCALL (close (fd));
errno = EINVAL;
xfree(dev);
return (-1);
#endif
}
/* set up default port parameters */
SYSCALL (tcgetattr (fd, &t));
t.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR\
|IGNCR|ICRNL|IXON);
t.c_oflag &= ~OPOST;
t.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
t.c_cflag &= ~(CSIZE|PARENB);
t.c_cflag |= CS8|CLOCAL;
cfsetispeed (&t, B9600);
cfsetospeed (&t, B9600);
t.c_cc[VMIN] = 1;
t.c_cc[VTIME] = 0;
SYSCALL (tcsetattr (fd, TCSANOW, &t));
if (xf86SetSerial (fd, options) == -1)
{
SYSCALL (close (fd));
xfree(dev);
return (-1);
}
SYSCALL (i = fcntl (fd, F_GETFL, 0));
if (i == -1)
{
SYSCALL (close (fd));
xfree(dev);
return (-1);
}
i &= ~O_NONBLOCK;
SYSCALL (i = fcntl (fd, F_SETFL, i));
if (i == -1)
{
SYSCALL (close (fd));
xfree(dev);
return (-1);
}
xfree(dev);
return (fd);
}
int
xf86SetSerial (int fd, pointer options)
{
struct termios t;
int val;
const char *s;
int baud, r;
if (fd < 0)
return -1;
/* Don't try to set parameters for non-tty devices. */
if (!isatty(fd))
return 0;
SYSCALL (tcgetattr (fd, &t));
if ((val = xf86SetIntOption (options, "BaudRate", 0)))
{
if ((baud = GetBaud (val)))
{
cfsetispeed (&t, baud);
cfsetospeed (&t, baud);
}
else
{
xf86Msg (X_ERROR,
"Invalid Option BaudRate value: %d\n", val);
return (-1);
}
}
if ((val = xf86SetIntOption (options, "StopBits", 0)))
{
switch (val)
{
case 1:
t.c_cflag &= ~(CSTOPB);
break;
case 2:
t.c_cflag |= CSTOPB;
break;
default:
xf86Msg (X_ERROR,
"Invalid Option StopBits value: %d\n", val);
return (-1);
break;
}
}
if ((val = xf86SetIntOption (options, "DataBits", 0)))
{
switch (val)
{
case 5:
t.c_cflag &= ~(CSIZE);
t.c_cflag |= CS5;
break;
case 6:
t.c_cflag &= ~(CSIZE);
t.c_cflag |= CS6;
break;
case 7:
t.c_cflag &= ~(CSIZE);
t.c_cflag |= CS7;
break;
case 8:
t.c_cflag &= ~(CSIZE);
t.c_cflag |= CS8;
break;
default:
xf86Msg (X_ERROR,
"Invalid Option DataBits value: %d\n", val);
return (-1);
break;
}
}
if ((s = xf86SetStrOption (options, "Parity", NULL)))
{
if (xf86NameCmp (s, "Odd") == 0)
{
t.c_cflag |= PARENB | PARODD;
}
else if (xf86NameCmp (s, "Even") == 0)
{
t.c_cflag |= PARENB;
t.c_cflag &= ~(PARODD);
}
else if (xf86NameCmp (s, "None") == 0)
{
t.c_cflag &= ~(PARENB);
}
else
{
xf86Msg (X_ERROR, "Invalid Option Parity value: %s\n",
s);
return (-1);
}
}
if ((val = xf86SetIntOption (options, "Vmin", -1)) != -1)
{
t.c_cc[VMIN] = val;
}
if ((val = xf86SetIntOption (options, "Vtime", -1)) != -1)
{
t.c_cc[VTIME] = val;
}
if ((s = xf86SetStrOption (options, "FlowControl", NULL)))
{
xf86MarkOptionUsedByName (options, "FlowControl");
if (xf86NameCmp (s, "Xoff") == 0)
{
t.c_iflag |= IXOFF;
}
else if (xf86NameCmp (s, "Xon") == 0)
{
t.c_iflag |= IXON;
}
else if (xf86NameCmp (s, "XonXoff") == 0)
{
t.c_iflag |= IXON|IXOFF;
}
else if (xf86NameCmp (s, "None") == 0)
{
t.c_iflag &= ~(IXON | IXOFF);
}
else
{
xf86Msg (X_ERROR,
"Invalid Option FlowControl value: %s\n", s);
return (-1);
}
}
if ((xf86SetBoolOption (options, "ClearDTR", FALSE)))
{
#ifdef CLEARDTR_SUPPORT
# if defined(TIOCMBIC)
val = TIOCM_DTR;
SYSCALL (ioctl(fd, TIOCMBIC, &val));
# else
SYSCALL (ioctl(fd, TIOCCDTR, NULL));
# endif
#else
xf86Msg (X_WARNING,
"Option ClearDTR not supported on this OS\n");
return (-1);
#endif
xf86MarkOptionUsedByName (options, "ClearDTR");
}
if ((xf86SetBoolOption (options, "ClearRTS", FALSE)))
{
#ifdef CLEARRTS_SUPPORT
val = TIOCM_RTS;
SYSCALL (ioctl(fd, TIOCMBIC, &val));
#else
xf86Msg (X_WARNING,
"Option ClearRTS not supported on this OS\n");
return (-1);
#endif
xf86MarkOptionUsedByName (options, "ClearRTS");
}
SYSCALL (r = tcsetattr (fd, TCSANOW, &t));
return (r);
}
int
xf86SetSerialSpeed (int fd, int speed)
{
struct termios t;
int baud, r;
if (fd < 0)
return -1;
/* Don't try to set parameters for non-tty devices. */
if (!isatty(fd))
return 0;
SYSCALL (tcgetattr (fd, &t));
if ((baud = GetBaud (speed)))
{
cfsetispeed (&t, baud);
cfsetospeed (&t, baud);
}
else
{
xf86Msg (X_ERROR,
"Invalid Option BaudRate value: %d\n", speed);
return (-1);
}
SYSCALL (r = tcsetattr (fd, TCSANOW, &t));
return (r);
}
int
xf86ReadSerial (int fd, void *buf, int count)
{
int r;
#ifdef DEBUG
int i;
#endif
SYSCALL (r = read (fd, buf, count));
#ifdef DEBUG
ErrorF("ReadingSerial: 0x%x",
(unsigned char)*(((unsigned char *)buf)));
for (i = 1; i < r; i++)
ErrorF(", 0x%x",(unsigned char)*(((unsigned char *)buf) + i));
ErrorF("\n");
#endif
return (r);
}
int
xf86WriteSerial (int fd, const void *buf, int count)
{
int r;
#ifdef DEBUG
int i;
ErrorF("WritingSerial: 0x%x",(unsigned char)*(((unsigned char *)buf)));
for (i = 1; i < count; i++)
ErrorF(", 0x%x",(unsigned char)*(((unsigned char *)buf) + i));
ErrorF("\n");
#endif
SYSCALL (r = write (fd, buf, count));
return (r);
}
int
xf86CloseSerial (int fd)
{
int r;
SYSCALL (r = close (fd));
return (r);
}
int
xf86WaitForInput (int fd, int timeout)
{
fd_set readfds;
struct timeval to;
int r;
FD_ZERO(&readfds);
if (fd >= 0) {
FD_SET(fd, &readfds);
}
to.tv_sec = timeout / 1000000;
to.tv_usec = timeout % 1000000;
if (fd >= 0) {
SYSCALL (r = select (FD_SETSIZE, &readfds, NULL, NULL, &to));
}
else {
SYSCALL (r = select (FD_SETSIZE, NULL, NULL, NULL, &to));
}
xf86ErrorFVerb (9,"select returned %d\n", r);
return (r);
}
int
xf86SerialSendBreak (int fd, int duration)
{
int r;
SYSCALL (r = tcsendbreak (fd, duration));
return (r);
}
int
xf86FlushInput(int fd)
{
fd_set fds;
struct timeval timeout;
char c[4];
#ifdef DEBUG
ErrorF("FlushingSerial\n");
#endif
if (tcflush(fd, TCIFLUSH) == 0)
return 0;
timeout.tv_sec = 0;
timeout.tv_usec = 0;
FD_ZERO(&fds);
FD_SET(fd, &fds);
while (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
if (read(fd, &c, sizeof(c)) < 1)
return 0;
FD_ZERO(&fds);
FD_SET(fd, &fds);
}
return 0;
}
static struct states {
int xf;
int os;
} modemStates[] = {
#ifdef TIOCM_LE
{ XF86_M_LE, TIOCM_LE },
#endif
#ifdef TIOCM_DTR
{ XF86_M_DTR, TIOCM_DTR },
#endif
#ifdef TIOCM_RTS
{ XF86_M_RTS, TIOCM_RTS },
#endif
#ifdef TIOCM_ST
{ XF86_M_ST, TIOCM_ST },
#endif
#ifdef TIOCM_SR
{ XF86_M_SR, TIOCM_SR },
#endif
#ifdef TIOCM_CTS
{ XF86_M_CTS, TIOCM_CTS },
#endif
#ifdef TIOCM_CAR
{ XF86_M_CAR, TIOCM_CAR },
#elif defined(TIOCM_CD)
{ XF86_M_CAR, TIOCM_CD },
#endif
#ifdef TIOCM_RNG
{ XF86_M_RNG, TIOCM_RNG },
#elif defined(TIOCM_RI)
{ XF86_M_CAR, TIOCM_RI },
#endif
#ifdef TIOCM_DSR
{ XF86_M_DSR, TIOCM_DSR },
#endif
};
static int numStates = sizeof(modemStates) / sizeof(modemStates[0]);
static int
xf2osState(int state)
{
int i;
int ret = 0;
for (i = 0; i < numStates; i++)
if (state & modemStates[i].xf)
ret |= modemStates[i].os;
return ret;
}
static int
os2xfState(int state)
{
int i;
int ret = 0;
for (i = 0; i < numStates; i++)
if (state & modemStates[i].os)
ret |= modemStates[i].xf;
return ret;
}
static int
getOsStateMask(void)
{
int i;
int ret = 0;
for (i = 0; i < numStates; i++)
ret |= modemStates[i].os;
return ret;
}
static int osStateMask = 0;
int
xf86SetSerialModemState(int fd, int state)
{
int ret;
int s;
if (fd < 0)
return -1;
/* Don't try to set parameters for non-tty devices. */
if (!isatty(fd))
return 0;
#ifndef TIOCMGET
return -1;
#else
if (!osStateMask)
osStateMask = getOsStateMask();
state = xf2osState(state);
SYSCALL((ret = ioctl(fd, TIOCMGET, &s)));
if (ret < 0)
return -1;
s &= ~osStateMask;
s |= state;
SYSCALL((ret = ioctl(fd, TIOCMSET, &s)));
if (ret < 0)
return -1;
else
return 0;
#endif
}
int
xf86GetSerialModemState(int fd)
{
int ret;
int s;
if (fd < 0)
return -1;
/* Don't try to set parameters for non-tty devices. */
if (!isatty(fd))
return 0;
#ifndef TIOCMGET
return -1;
#else
SYSCALL((ret = ioctl(fd, TIOCMGET, &s)));
if (ret < 0)
return -1;
return os2xfState(s);
#endif
}
int
xf86SerialModemSetBits(int fd, int bits)
{
int ret;
int s;
if (fd < 0)
return -1;
/* Don't try to set parameters for non-tty devices. */
if (!isatty(fd))
return 0;
#ifndef TIOCMGET
return -1;
#else
s = xf2osState(bits);
SYSCALL((ret = ioctl(fd, TIOCMBIS, &s)));
return ret;
#endif
}
int
xf86SerialModemClearBits(int fd, int bits)
{
int ret;
int s;
if (fd < 0)
return -1;
/* Don't try to set parameters for non-tty devices. */
if (!isatty(fd))
return 0;
#ifndef TIOCMGET
return -1;
#else
s = xf2osState(bits);
SYSCALL((ret = ioctl(fd, TIOCMBIC, &s)));
return ret;
#endif
}