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Date: Mon, 6 Mar 2000 09:19:42 -0800 (PST)
From: larse@isi.edu
To: freebsd-gnats-submit@FreeBSD.org
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Subject: kern/17224: 4.0-20000214-CURRENT: pcm/csa sound - shared irq problem?
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>Number:         17224
>Category:       kern
>Synopsis:       4.0-20000214-CURRENT: pcm/csa sound - shared irq problem?
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Mar  6 09:20:02 PST 2000
>Closed-Date:
>Last-Modified:
>Originator:     Lars Eggert
>Release:        4.0-20000214-CURRENT
>Organization:
USC Information Sciences Institute
>Environment:
FreeBSD hbo.isi.edu 4.0-20000214-CURRENT FreeBSD 4.0-20000214-CURRENT #4: Thu Feb 24 16:47:59 PST 2000     root@pub.isi.edu:/usr/src/sys/compile/PRECISION  i386

>Description:
I have some trouble with the pcm/csa sound driver under 
4.0-20000214-CURRENT. This is with an onboard CS4614 audio chip. The
board also has an onboard Adaptec aic7899 Ultra160 SCSI adapter that
shares irq5 with the sound chip:

[hbo: ~] dmesg | grep 'pcm\|csa\|ahc'
ahc0: <Adaptec aic7899 Ultra160 SCSI adapter> port 0xec00-0xecff mem 0xfafff000-0xfaffffff irq 5 at device 10.0 on pci3
ahc0: aic7899 Wide Channel A, SCSI Id=7, 16/255 SCBs
ahc1: <Adaptec aic7899 Ultra160 SCSI adapter> port 0xe800-0xe8ff mem 0xfaffe000-0xfaffefff irq 11 at device 10.1 on pci3
ahc1: aic7899 Wide Channel B, SCSI Id=7, 16/255 SCBs
csa0: <Crystal Semiconductor CS4614/4622/4624 Audio accelerator/4280 Audio controller> mem 0xfae00000-0xfaefffff,0xfaffe000-0xfaffefff irq 5 at device 6.0 on pci2
pcm0: <CS461x PCM Audio> on csa0

Sound output works fine after rebooting, but after a few hours of
playback, sound starts to get choppy and hissing. Nothing short of a
reboot seems to fix this.

Also, if I disable the ahc controller in the BIOS (there are no devices
connected to it), I get messed up sound output right from the start. 
I suspect there is some problem with the pcm/csa driver and shared 
interrupts.

Please let me know if you require more information.
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted:


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