[Xen-devel] PCI quirks with via82xx soundcard / sysfs paths

[Mario Manno <m.manno@xxxxxxx>]

Hi,

I'm trying to get a via82xx onboard soundcard working in a domU.
So far it only works, if I enable permissive mode with:
echo "Y" > /sys/module/pciback/parameters/permissive
I still can't hear any sound, but the modules load fine and i can use
the alsamixer. (which most likely is unrelated to xen)


I tried to use xend-pci-quirks.sxp, but the python script fails, because
there is no /sys/bus/pci/drivers/pciback/quirks.

Adding the card to /sys/bus/pci/drivers/pciback/permissive fails with:
Error: pci: failed to open/write/close permissive sysfs node: [Errno 13]
Permission denied: '/sys/bus/pci/drivers/pciback/permissive'

The part of the documentation dealing with pci quirks and permissive
seems to be outdated. See user.pdf page 29/30.
The section about binding works perfectly, though.

I'm running debian amd64 with xen hypervisor and utils at version
3.0-unstable+hg11561-1. Two nic ports (dlink 4-port nic) are reassigned
to the domU and work fine.

lspci -n gives the following output (11.5 is the soundcard):
00:00.0 0600: 1106:0204
00:00.1 0600: 1106:1204
00:00.2 0600: 1106:2204
00:00.3 0600: 1106:3204
00:00.4 0600: 1106:4204
00:00.7 0600: 1106:7204
00:01.0 0604: 1106:b188
00:07.0 0c00: 1106:3044 (rev 80)
00:0b.0 0604: 8086:b152
00:0c.0 0280: 1397:2bd0 (rev 02)
00:0d.0 0280: 1397:2bd0 (rev 02)
00:0f.0 0101: 1106:3149 (rev 80)
00:0f.1 0101: 1106:0571 (rev 06)
00:10.0 0c03: 1106:3038 (rev 81)
00:10.1 0c03: 1106:3038 (rev 81)
00:10.2 0c03: 1106:3038 (rev 81)
00:10.3 0c03: 1106:3038 (rev 81)
00:10.4 0c03: 1106:3104 (rev 86)
00:11.0 0601: 1106:3227
00:11.5 0401: 1106:3059 (rev 60)
00:11.6 0780: 1106:3068 (rev 80)
00:12.0 0200: 1106:3065 (rev 78)
00:18.0 0600: 1022:1100
00:18.1 0600: 1022:1101
00:18.2 0600: 1022:1102
00:18.3 0600: 1022:1103
01:00.0 0300: 1106:3108 (rev 01)
02:04.0 0200: 1186:1002 (rev 15)
02:05.0 0200: 1186:1002 (rev 15)
02:06.0 0200: 1186:1002 (rev 15)
02:07.0 0200: 1186:1002 (rev 15)

thanks.
mfg
-- 
Mario Manno <m.manno@xxxxxxx>


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