Re: serial port not working correctly (you better read it if you want PPP)

[Diego Roversi]

On Wed, Jan 02, 2002 at 10:58:18PM +0100, Marcus Brinkmann wrote:

> Hi,
> 
> we are having a problem with the serial device driver.  Neal and I think we
> tracked it down to the interrupt handling.
> 

Some month ago, I'd also a problem with the serial line, and I post some
patch for gnumach. Some of them was never included in the gnumach afaik... It 
solved
the problem for me, I hope the same were for you...

diff -ur gnumach-20010918/device/chario.c gnumach-20010918.new/device/chario.c
--- gnumach-20010918/device/chario.c    Sun Apr 29 22:26:01 2001
+++ gnumach-20010918.new/device/chario.c        Tue Oct  9 22:45:58 2001
@@ -122,8 +122,8 @@
   pdma_timeouts[B2400] = _PR(240);
   pdma_timeouts[B4800] = _PR(480);
   pdma_timeouts[B9600] = _PR(960);
-  pdma_timeouts[EXTA]  = _PR(1440); /* >14400 baud */
-  pdma_timeouts[EXTB]  = _PR(1920); /* >19200 baud */
+  pdma_timeouts[B19200]  = _PR(1920); /* >14400 baud */
+  pdma_timeouts[B38400]  = _PR(3840); /* >19200 baud */
   pdma_timeouts[B57600] = _PR(5760);
   pdma_timeouts[B115200] = _PR(11520);
 
@@ -143,13 +143,23 @@
   pdma_water_mark[B1800] = _PR(180);
   pdma_water_mark[B2400] = _PR(240);
   pdma_water_mark[B4800] = _PR(480);
+  pdma_water_mark[B9600] = _PR(960);
+  pdma_water_mark[B19200] = _PR(1920);
+#undef _PR
+#define _PR(X) (0.10 * X)   
+  pdma_water_mark[B38400] = 192;
+  pdma_water_mark[B57600] = 96;
+  pdma_water_mark[B115200] = 64;
+   
+#if 0   
   i = tty_inq_size/2;
   pdma_water_mark[B9600] = i;
   pdma_water_mark[EXTA]  = i; /* >14400 baud */
   pdma_water_mark[EXTB]  = i; /* >19200 baud */
   pdma_water_mark[B57600] = i;
   pdma_water_mark[B115200] = i;
-
+#endif
+   
   return;
 }



-- 
Saluti / Regards

Diego Roversi | diegor at maganet.net
              | diegor at tiscalinet.it