Bug 17224

Summary: 4.0-20000214-CURRENT: pcm/csa sound - shared irq problem?
Product: Base System Reporter: larse <larse>
Component: kernAssignee: freebsd-bugs (Nobody) <bugs>
Status: Closed FIXED    
Severity: Affects Only Me    
Priority: Normal    
Version: Unspecified   
Hardware: Any   
OS: Any   
Attachments:
Description Flags
smime.p7s none

Description larse 2000-03-06 17:20:02 UTC 
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.
Comment 1 larse 2000-03-27 16:06:04 UTC 
Just a quick followup on how things are with 4.0-STABLE: 

- the sound corruption problem after a long continous playback is gone
- however, disabling the SCSI controller on the shared irq will still
  mess up sound output immediatly

Lars
________________________________________________________________________
Lars Eggert <larse@isi.edu>               Information Sciences Institute
http://www.isi.edu/~larse/             University of Southern California
Comment 2 larse 2000-07-22 02:54:57 UTC 
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
Comment 3 iedowse freebsd_committer freebsd_triage 2001-08-27 21:47:41 UTC 
State Changed
From-To: open->feedback


Is this still a problem with more recent releases?
Comment 4 larse 2001-08-27 23:48:08 UTC 
Sorry, I can no longer test this. The hardware of the machine in question
has changed too much (new BIOS, sound card, 2nd CPU).
--
Lars Eggert <larse@isi.edu>               Information Sciences Institute
http://www.isi.edu/larse/              University of Southern California
Comment 5 Sheldon Hearn freebsd_committer freebsd_triage 2002-01-30 09:20:33 UTC 
State Changed
From-To: feedback->closed

Automatic feedback timeout.  This PR remained unchanged in the feedback 
state for more than 4 months. 

If additional feedback that warrants the re-opening of this PR is 
available but not included in the audit trail, please include the 
feedback in a reply to this message (preserving the Subject line) and 
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