From nobody Sat Feb 8 08:16:58 1997 Received: (from nobody@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id IAA18384; Sat, 8 Feb 1997 08:16:58 -0800 (PST) Message-Id: <199702081616.IAA18384@freefall.freebsd.org> Date: Sat, 8 Feb 1997 08:16:58 -0800 (PST) From: garman@phs.k12.ar.us To: freebsd-gnats-submit@freebsd.org Subject: sio1 (16540 serial port) is not recognized by GENERIC boot kernel X-Send-Pr-Version: www-1.0 >Number: 2695 >Category: kern >Synopsis: sio1 (16540 serial port) is not recognized by GENERIC boot kernel >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: closed >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Feb 8 08:20:01 PST 1997 >Closed-Date: Fri Aug 18 03:10:36 PDT 2000 >Last-Modified: Fri Aug 18 03:12:50 PDT 2000 >Originator: Jason Garman >Release: 2.2-GAMMA as of yesterday >Organization: individual >Environment: (could not install, so this can't be determined) >Description: The internal modem on my machine (on sio1) is recognized fine by 2.1.x kernels, but when booting 2.2 (any version i've tried) the boot messages report that it can't be found. I turned on verbose probe using flags 0x80 and it tells me: sio1: probe test 5 failed sio1: probe test 6 failed sio1 not found at 0x2f8 My working 2.1.6.1-RELEASE kernel reports: sio1 at 0x2f8-0x2ff irq 3 on isa sio1: type 16450 >How-To-Repeat: boot a 2.2-gamma kernel with my modem installed on com2 :-) >Fix: not enough delay to allow the modem to respond to probes, perhaps? >Release-Note: >Audit-Trail: From: Bruce Evans To: freebsd-gnats-submit@freebsd.org, garman@phs.k12.ar.us Cc: Subject: Re: kern/2695: sio1 (16540 serial port) is not recognized by GENERIC boot kernel Date: Sun, 9 Feb 1997 09:06:46 +1100 >I turned on verbose probe using flags 0x80 and it tells me: > >sio1: probe test 5 failed >sio1: probe test 6 failed >sio1 not found at 0x2f8 > >My working 2.1.6.1-RELEASE kernel reports: > >sio1 at 0x2f8-0x2ff irq 3 on isa >sio1: type 16450 >>How-To-Repeat: >boot a 2.2-gamma kernel with my modem installed on com2 :-) >>Fix: >not enough delay to allow the modem to respond to probes, perhaps? 2.2 delays 1000 usec longer than 2.1.6 between test4 and test 5. I have seen failures for test 3 and test 4 on a UMC8669F (16550 incompatible). I guess this is caused by fifo mode and possibly some other things not being cleared after a crash, and bugs in UMC's control registers. I recently found that the UMC's fifo control register doesn't work either - if it is written to while input is arriving, then the fifo trigger level is not changed until input stops arriving. There are also problems with writing to the divisor latch registers while input is arriving. So initialization of the divisor latch and the fifo in the probe can't be trusted to work (the fifo isn't initialized now). Bruce From: Johan Karlsson To: freebsd-gnats-submit@freebsd.org, garman@phs.k12.ar.us Cc: Subject: Re: kern/2695: sio1 (16540 serial port) is not recognized by GENERIC boot kernel Date: Sun, 06 Aug 2000 10:58:47 +0200 Hi Jason Can you tell us if this problem still exists in more recent Releases of FreeBSD, eg FreeBSD 4.1. Thanks Johan K State-Changed-From-To: open->feedback State-Changed-By: sheldonh State-Changed-When: Mon Aug 7 04:56:14 PDT 2000 State-Changed-Why: waiting for feedback on a more recent release. http://www.freebsd.org/cgi/query-pr.cgi?pr=2695 State-Changed-From-To: feedback->closed State-Changed-By: johan State-Changed-When: Fri Aug 18 03:10:36 PDT 2000 State-Changed-Why: I received this from Jason: Date: Thu, 17 Aug 2000 18:11:49 -0400 (Fri 00:11 CEST) From: Jason Garman To: Johan Karlsson Subject: Re: kern/2695: sio1 (16540 serial port) is not recognized by GENERIC boot kernel On Sun, Aug 06, 2000 at 10:58:47AM +0200, Johan Karlsson wrote: > Hi Jason > > Can you tell us if this problem still exists in more recent > Releases of FreeBSD, eg FreeBSD 4.1. > i would suggest closing that pr :) its been way too long, i don't even have that hardware anymore. thanks -- Jason Garman http://web.wedgie.org/ Student, University of Maryland jgarman@wedgie.org And this was in the 2.2-gamma days and alot has happened since then. If someone else experience this problem please submit a new PR for a newer release. http://www.freebsd.org/cgi/query-pr.cgi?pr=2695 >Unformatted: