Date: Mon, 24 Aug 1998 06:16:13 +0200 (MET DST) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: Jos.Backus@nl.origin-it.com (Jos Backus) Cc: freebsd-multimedia@FreeBSD.ORG Subject: Re: AudioTrix Pro detected but produces no sound :-( Message-ID: <199808240416.GAA00675@labinfo.iet.unipi.it> In-Reply-To: <19980823212807.A28324@hal.mpn.cp.philips.com> from "Jos Backus" at Aug 23, 98 09:27:48 pm
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> On Sun, Aug 23, 1998 at 10:11:08AM -0700, Bernie Doehner wrote:
> > What OS version are you running?
...
> Thanks, I applied this patch but I still see the ``FIOASYNC'' message, and
obviously, since the patch was only trying to fix a problem when the
user presses ctrl-C while doing audio I/O ...
> ``cat some.wav > /dev/audio'' hanging in dspwr. I'm also seeing this:
> Aug 23 20:22:16 jos /kernel: timeout flushing dbuf_out.chan, cnt 0xff00 flags
> 0x00000041
>
> This suggests to me that the problem is DMA-related...
right... either a software problem, or a DMA misconfiguration
problem. cnt 0xff00 means the output buffer is full yet there are
no DMA requests coming.
I am seeing the following recent change in /sys/i386/isa/isa.c
which might be related. Try to remove the two lines below and see
if things work better.
cheers
luigi
RCS file: /usr/CVS-luigi/src/sys/i386/isa/isa.c,v
retrieving revision 1.112
retrieving revision 1.113
diff -u -r1.112 -r1.113
--- src/sys/i386/isa/isa.c 1998/04/17 22:36:36 1.112
+++ src/sys/i386/isa/isa.c 1998/07/19 04:22:55 1.113
@@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)isa.c 7.2 (Berkeley) 5/13/91
- * $Id: isa.c,v 1.112 1998/04/17 22:36:36 des Exp $
+ * $Id: isa.c,v 1.113 1998/07/19 04:22:55 bde Exp $
*/
/*
@@ -868,6 +868,8 @@
(dma_auto_mode & (1 << chan)) == 0 )
printf("isa_dmadone: channel %d not busy\n", chan);
+ if ((dma_auto_mode & (1 << chan)) == 0)
+ outb(chan & 4 ? DMA2_SMSK : DMA1_SMSK, (chan & 3) | 4);
if (dma_bounced & (1 << chan)) {
/* copy bounce buffer on read */
-----------------------------+--------------------------------------
Luigi Rizzo | Dip. di Ingegneria dell'Informazione
email: luigi@iet.unipi.it | Universita' di Pisa
tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy)
fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/
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