Date: Mon, 29 Jul 1996 19:31:53 +0200 (MET DST) From: Mark Huizer <xaa@xaa.stack.urc.tue.nl> To: freebsd-current@freebsd.org Subject: kernel patch for sio.c (fwd) It helped for me... Message-ID: <199607291731.TAA00426@xaa.stack.urc.tue.nl>
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well well, at last I could use UUCP without PPP :-)
Perhaps something to add to the current kernel?
Mark
----- Forwarded message from Mark Huizer -----
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|From: mark@putte.seeware.DIALix.oz.au (Mark Hannon)
|Subject: Re: Strange Taylor UUCP problem on Freebsd 2.1.0
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|References: <4ta4qr$80f@itesec.hsc.fr>
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|Date: Sun, 28 Jul 1996 17:53:50 GMT
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In article <4ta4qr$80f@itesec.hsc.fr>,
archer@hsc.fr (Vincent Archer) writes:
> Got a strange problem using Taylor UUCP 1.06 (coming straight out of the
> FreeBSD 2.1 cdrom). I'm supposed to call from a Solaris 2.4 (HDB UUCP),
> so I'm stuck to protocol "g". The BSD machine reported all kind of checksum
> errors, ending the transfer after 10mn (for a single remote command!).
>
> I tried to recompile UUCP 1.06.1, and ended having two BSD machines, using
> both the same uucico binary, and still gets the checksum errors on each
> "g" protocol packet.
>
Hi,
There is a problem with some 16550a serial controllers. It
manifests itself in a failure to run UUCP whilst PPP/serial
logins etc work fine.
I have been using the following kernel patch for some months
and all works well now. (Prior to that I had resorted to
using and old 16450 ISA card prior to the patch).
*** sio.c.orig Tue Jun 25 21:27:34 1996
--- sio.c Tue Jun 25 21:28:30 1996
***************
*** 211,216 ****
--- 211,220 ----
struct termios lt_in; /* should be in struct tty */
struct termios lt_out;
+ #ifdef BROKEN_UART
+ speed_t current_ospeed;
+ #endif
+
bool_t do_timestamp;
struct timeval timestamp;
***************
*** 626,631 ****
--- 630,639 ----
com->it_in.c_ispeed = com->it_in.c_ospeed = comdefaultrate;
com->it_out = com->it_in;
+ #ifdef BROKEN_UART
+ com->current_ospeed = comdefaultrate;
+ #endif
+
/* attempt to determine UART type */
printf("sio%d: type", unit);
***************
*** 1624,1629 ****
--- 1632,1641 ----
int unit;
int txtimeout;
+ #ifdef BROKEN_UART
+ bool_t setspeed;
+ #endif
+
/* do historical conversions */
if (t->c_ispeed == 0)
t->c_ispeed = t->c_ospeed;
***************
*** 1637,1642 ****
--- 1649,1669 ----
unit = DEV_TO_UNIT(tp->t_dev);
com = com_addr(unit);
iobase = com->iobase;
+
+ #ifdef BROKEN_UART
+ /*
+ * check if the baud rate is different from the currently
+ * selected one, if so then set new rate. If it is the same,
+ * don't touch the speed, it confuses the UMC chip heavily
+ */
+
+ if (com->current_ospeed != t->c_ospeed) {
+ setspeed = TRUE;
+ com->current_ospeed = t->c_ospeed;
+ } else
+ setspeed = FALSE;
+ #endif
+
s = spltty();
if (divisor == 0)
(void)commctl(com, TIOCM_DTR, DMBIC); /* hang up line */
***************
*** 1727,1733 ****
!= (LSR_TSRE | LSR_TXRDY))
goto retry;
! if (divisor != 0) {
outb(iobase + com_cfcr, cfcr | CFCR_DLAB);
outb(iobase + com_dlbl, divisor & 0xFF);
outb(iobase + com_dlbh, (u_int) divisor >> 8);
--- 1754,1764 ----
!= (LSR_TSRE | LSR_TXRDY))
goto retry;
! #ifdef BROKEN_UART
! if (divisor != 0 && setspeed) {
! #else
! if (divisor != 0) {
! #endif
outb(iobase + com_cfcr, cfcr | CFCR_DLAB);
outb(iobase + com_dlbl, divisor & 0xFF);
outb(iobase + com_dlbh, (u_int) divisor >> 8);
Regards, Mark
--
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-+
| Mark Hannon,| FreeBSD - Free Unix for your PC| mark@seeware.DIALix.oz.au|
| Melbourne, | PGP key available by fingering | epamha@epa.ericsson.se |
| Australia | seeware@melbourne.DIALix.oz.au | |
+-=-=-=-=-=-=-+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-+
----- End of forwarded message from Mark Huizer -----
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