Hello
As regards to comment on the trac i am sending you the problem description
and a patch. I am providing the code under GPL v2 (same as VirtualBox OSE).
Problem description:
When a guest opens a port using non-standard baud rate the virtualbox is
falling
back to default 9600 - i think this is not good due there are a programs
which need
to use the non-standard baudrates. In my case a windows application cannot
communicate with device. So i made a modification (which works for me) - and
i hope it could be commited. ps. similar problem was on wine project:
http://www.winehq.org/pipermail/wine-patches/2002-February/001895.html
regards,
Mariusz Bialonczyk
--- VirtualBox-2.1.0/src/VBox/Devices/Serial/DrvHostSerial.cpp.original
2008-12-13 22:59:56.000000000 +0100
+++ VirtualBox-2.1.0/src/VBox/Devices/Serial/DrvHostSerial.cpp 2009-02-13
07:22:43.000000000 +0100
@@ -40,6 +40,7 @@
#if defined(RT_OS_LINUX) || defined(RT_OS_DARWIN)
# include <errno.h>
# include <termios.h>
+# include <linux/serial.h>
# include <sys/types.h>
# include <fcntl.h>
# include <string.h>
@@ -242,6 +243,7 @@
PDRVHOSTSERIAL pThis = PDMICHAR_2_DRVHOSTSERIAL(pInterface);
#if defined(RT_OS_LINUX) || defined(RT_OS_DARWIN)
struct termios *termiosSetup;
+ struct serial_struct *serialStruct;
int baud_rate;
#elif defined(RT_OS_WINDOWS)
LPDCB comSetup;
@@ -308,7 +310,17 @@
baud_rate = B115200;
break;
default:
- baud_rate = B9600;
+ /* non-standard baud rate handling */
+ serialStruct = (struct serial_struct
*)RTMemTmpAllocZ(sizeof(struct serial_struct));
+ ioctl(pThis->DeviceFile, TIOCGSERIAL, serialStruct);
+ serialStruct->custom_divisor = serialStruct->baud_base / Bps;
+ if (!(serialStruct->custom_divisor))
+ serialStruct->custom_divisor = 1;
+ serialStruct->flags &= ~ASYNC_SPD_MASK;
+ serialStruct->flags |= ASYNC_SPD_CUST;
+ ioctl(pThis->DeviceFile, TIOCSSERIAL, serialStruct);
+ RTMemTmpFree(serialStruct);
+ baud_rate = B38400;
}
cfsetispeed(termiosSetup, baud_rate);
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