From owner-freebsd-bugs  Fri Jul 21 19: 0: 5 2000
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Date: Fri, 21 Jul 2000 19:00:01 -0700 (PDT)
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From: Lars Eggert <larse@ISI.EDU>
Subject: Re: kern/17224: 4.0-20000214-CURRENT: pcm/csa sound - shared irq 
 problem?
Reply-To: Lars Eggert <larse@ISI.EDU>
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The following reply was made to PR kern/17224; it has been noted by GNATS.

From: Lars Eggert <larse@ISI.EDU>
To: freebsd-gnats-submit@FreeBSD.org, stable@freebsd.org
Cc:  
Subject: Re: kern/17224: 4.0-20000214-CURRENT: pcm/csa sound - shared irq 
 problem?
Date: Fri, 21 Jul 2000 18:54:57 -0700

 kern/17224 is still an issue with 4.1-RC, just verified it again: 
 
 Disabling an Adaptec aic7899 Ultra160 SCSI adapter that shares IRQ 5 with
 an onboard Crystal Semiconductor CS4614/4622/4624/4280 Audio controller in
 the BIOS produces choppy sound. (If the Adaptec is left enabled, the sound
 output is fine.)
 
 (The dump below was taken when the Adaptec controller was enabled.)
 
 [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
 -- 
 Lars Eggert <larse@isi.edu>                 Information Sciences Institute
 http://www.isi.edu/larse/                University of Southern California
 


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