On Tue, Apr 05, 2016 at 12:02:07PM +0200, Clemens Ladisch wrote:
> Joerg Roedel wrote:
> > I have seen that before, can you please boot with 'amd_iommu_dump' on
> > the kernel command line and send me dmesg after boot?
>
> Full dmesg: <https://bugzilla.kernel.org/attachment.cgi?id=211771>:
> ...
> [ 0.179504] pci 0000:04:00.0: [10b5:8112] type 01 class 0x060400
> [ 0.179681] pci 0000:04:00.0: disabling ASPM on pre-1.1 PCIe device. You
> can enable it with 'pcie_aspm=force'
> [ 0.179966] pci 0000:00:15.0: PCI bridge to [bus 04-05]
> [ 0.180128] pci 0000:00:15.0: bridge window [io 0xc000-0xcfff]
> [ 0.180216] pci 0000:05:04.0: [13f6:8788] type 00 class 0x040100
> [ 0.180245] pci 0000:05:04.0: reg 0x10: [io 0xc000-0xc0ff]
> [ 0.180390] pci 0000:05:04.0: supports D1 D2
> [ 0.180478] pci 0000:04:00.0: PCI bridge to [bus 05]
> [ 0.180641] pci 0000:04:00.0: bridge window [io 0xc000-0xcfff]
> ...
> [ 0.459076] AMD-Vi: device: 00:00.2 cap: 0040 seg: 0 flags: fe info 1300
> [ 0.459238] AMD-Vi: mmio-addr: 00000000feb80000
> [ 0.459430] AMD-Vi: DEV_SELECT_RANGE_START devid: 00:01.0 flags:
> 00
> [ 0.459592] AMD-Vi: DEV_RANGE_END devid: ff:1f.6
> [ 0.460268] AMD-Vi: DEV_ALIAS_RANGE devid: 03:00.0 flags:
> 00 devid_to: 00:14.4
> [ 0.460555] AMD-Vi: DEV_RANGE_END devid: 03:1f.7
> [ 0.460717] AMD-Vi: DEV_SPECIAL(HPET[0]) devid: 00:14.0
> [ 0.460876] AMD-Vi: DEV_SPECIAL(IOAPIC[5]) devid: 00:14.0
> [ 0.542806] iommu: Adding device 0000:00:02.0 to group 0
> ...
> [ 0.547889] iommu: Adding device 0000:00:15.0 to group 9
> ...
> [ 0.549907] iommu: Adding device 0000:04:00.0 to group 9
> [ 0.550071] iommu: Adding device 0000:05:04.0 to group 9
> [ 0.550229] AMD-Vi: Found IOMMU at 0000:00:00.2 cap 0x40
> [ 0.550387] AMD-Vi: Extended features: PreF PPR GT IA
> [ 0.550804] AMD-Vi: Lazy IO/TLB flushing enabled
> ...
> [ 124.474883] AMD-Vi: Event logged [IO_PAGE_FAULT device=05:00.0
> domain=0x0000 address=0x0000000000100000 flags=0x0050]
Hmm, with this IVRS table it should've never worked. For it to work
there needs to be an alias defined from device 05:04.0 to device
05:00.0. Otherwise the iommu driver doesn't know about the real
requestor-id it could expect from the sound card.
Did you do a BIOS update in-between? Or maybe some change to the sound
driver makes it misbehave and use a wrong pci request-id?
Joerg
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