Date: Fri, 21 Jul 2000 18:54:57 -0700 From: Lars Eggert <larse@ISI.EDU> To: freebsd-gnats-submit@FreeBSD.org, stable@freebsd.org Subject: Re: kern/17224: 4.0-20000214-CURRENT: pcm/csa sound - shared irq problem? Message-ID: <3978FEF1.9D053EA8@isi.edu>
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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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