Path: utzoo!utgpu!watmath!att!rutgers!ucsd!swrinde!cs.utexas.edu!uunet!ibmpa!dolphin.tcspa.ibm.com!mlewis
From: mlewis@dolphin.tcspa.ibm.com (Mark S. Lewis)
Newsgroups: comp.sys.ibm.pc.rt
Subject: Fix for 6152 token-ring DOS Lan Support (part 1) IBM/4.3
Keywords: V1.19_kit.1 token-ring lan support 6152 IBM/4.3
Message-ID: <2929@ibmpa.UUCP>
Date: 15 Nov 89 19:16:44 GMT
Sender: news@ibmpa.UUCP
Reply-To: mlewis@ibmsupt.UUCP ()
Organization: IBM AWD, Palo Alto
Lines: 57

Subject: Fix for 6152 token-ring DOS Lan Support (part 1) IBM/4.3
Index: sys/ca_atr/if_lan.c IBM/4.3

Description:	
         After using the DOS Lan facilities, the token-ring adapter
         is not closed.  When Unix boots, it gets interrupts prior
         to completing the token-ring probe, attach, and open
         sequence.  This results in Unix hanging during boot, which
         persists until the power is cycled.

         After suspending Unix and using the DOS Lan, the token-ring
         adapter is not reset properly during restart.  This results
         in a failure of the open routine and leaves the network
         unreachable.  This persists until Unix is rebooted.
 
         part 1   patch to the file /sys/ca_atr/if_lan.c
         part 2   uuencoded DOS executable shutlan.exe
         part 3   shar file containing read.me, and shutlan sources

Fix:	
         This patch fixes the restart problem.

         Apply patch V1.18, if you have not already done so.  Then
         apply the following patch to the Unix token-ring driver.
 
         Proceed to the next part of the kit.

*** if_lan.c	Tue Nov 14 16:18:22 1989
--- if_lan.c.fix	Wed Nov 15 09:45:28 1989
***************
*** 318,323 ****
--- 318,327 ----
  	register struct tr_softc *trs = &tr_softc[unit];
  	register struct ifnet *ifp = &trs->trs_if;
  
+ 	/* get pointer to device I/O space */
+ 	register struct trdevice *addr = (struct trdevice *)((unsigned int)iod->
+ 					 iod_addr & 0xffffff);
+ 
  	if (how == SUSPEND_START) {
  		trs->trs_flags = ifp->if_flags;	/* save flag state */
  		if (ifp->if_flags & IFF_RUNNING)
***************
*** 331,336 ****
--- 335,341 ----
  		if (trs->trs_flags & IFF_RUNNING) {
  			MM_OUT(&trs->aca->set.isrp_h, INT_ENABLE); /*allow pc ints. */
  			ifp->if_flags &= ~IFF_RUNNING;	/* pretend not running */
+ 			trprobe(addr);	/* hard reset */
  			trinit(unit);
  		restore_window(old_window);
  		}


=====-----     Mark S. Lewis, IBM AWD Palo Alto    -----======
inet: mlewis%ibmsupt@uunet.uu.net		(415) 855-4486
uucp: uunet!ibmsupt!mlewis              IBM Tie Line: 465-4486