[LinuxBIOS] badly initialized (?) pci bridge on the M57SLI (with irq table and mptable)

[echelon at free.fr]

Hi,
Just one remark:
 - these findings apply to the SPI revision of the board too; Ive noticed
exactly the same behaviour with LB and with proprietary (award) bios.
BR, Florentin

Quoting Ward Vandewege <ward at gnu.org>:

> Hi there,
>
> We've had a bit of a chat on the IRC channel today about the M57SLI and how
> the pci bridge does not seem to be initialized properly under LinuxBIOS. The
> pci-e bridge is initialized ok - pci-e vga cards work fine; pci vga cards
> do not.
>
> Here's an lspci of the pci bridge (device 06.0), booted from the
> proprietary bios:
>
> 0000:00:06.0 0604: 10de:0370 (rev a2) (prog-if 01)
>   Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B-
>   Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
> <MAbort- >SERR- <PERR-
>   Latency: 0
>   Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
>   I/O behind bridge: 0000f000-00000fff
>   Memory behind bridge: fb000000-fb0fffff
>   Prefetchable memory behind bridge: fff00000-000fffff
>   BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
>   Capabilities: [b8] #0d [0000]
>   Capabilities: [8c] #08 [a800]
> 00: de 10 70 03 07 00 b0 00 a2 01 04 06 00 00 81 00
> 10: 00 00 00 00 00 00 00 00 00 01 01 20 f0 00 80 02
> 20: 00 fb 00 fb f0 ff 00 00 00 00 00 00 00 00 00 00
> 30: 00 00 00 00 b8 00 00 00 00 00 00 00 00 00 00 0a
>
> and from linuxbios:
>
> 0000:00:06.0 0604: 10de:0370 (rev a2)
>   Control: I/O- Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR+ FastB2B-
>   Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
> <MAbort- >SERR- <PERR-
>   Latency: 0
>   Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
>   I/O behind bridge: 0000f000-00000fff
>   Memory behind bridge: fff00000-000fffff
>   Prefetchable memory behind bridge: fff00000-000fffff
>   BridgeCtl: Parity+ SERR+ NoISA- VGA- MAbort- >Reset- FastB2B-
>   Capabilities: [b8] #0d [0000]
>   Capabilities: [8c] #08 [a800]
> 00: de 10 70 03 04 01 b0 00 a2 00 04 06 00 00 81 00
> 10: 00 00 00 00 00 00 00 00 00 01 01 00 f0 00 80 02
> 20: f0 ff 00 00 f0 ff 00 00 00 00 00 00 00 00 00 00
> 30: 00 00 00 00 b8 00 00 00 00 00 00 00 00 00 03 0a
>
> Uwe thought that perhaps there was an issue with the IRQ or MP table. I've
> run getpir and mptable while running the proprietary BIOS, and here's the
> output:
>
>   http://ward.vandewege.net/m57sli_mptable.output
>   http://ward.vandewege.net/m57sli_irq_tables.c
>
> I've also saved a proprietary and linuxbios dmesg output, since there seems
> to be something funny going on with the PCI bridge detection - under
> LinuxBIOS no less than 7 devices show up as PCI bridges, rather than the 2
> that show up under the proprietary BIOS.
>
>   http://ward.vandewege.net/m57sli_dmesg_linuxbios.txt
>   http://ward.vandewege.net/m57sli_dmesg_proprietary.txt
>
> Suggestions? Things to try?
>
> Thanks,
> Ward.
>
> --
> Ward Vandewege <ward at fsf.org>
> Free Software Foundation - Senior System Administrator
>