Re: Query about SIS963 Bridges

John M Collins
2003-03-24T06:43:45Z

Alan Cox wrote:

>On Sun, 2003-03-23 at 23:31, John M Collins wrote:
>
>
>>I've just got a new machine (2.5 GHz pentium lots of RAM and disk space)
>>which has one of these SIS963 Southbridge creatures and I get the
>>message on booting a 2.4.19ish sort of kernel.
>>
>>
>
>The SiS963 is currently a winputer.
>
>
>
>>Alas it's very clear that it isn't transparent and I can't get to half
>>of the PCI stuff - worst of all the built-in Ethernet and any Ethernet
>>card I plug in. It would seem that it isn't too transparent as the
>>reported IRQ and IOMEM assignments for the devices are all scrambled.
>>
>>
>
>One possibility is the system expects ACPI to untangle that mess and set
>up the bridge. You could certainly stuff realistic looking ranges into
>it, set IO/MEM and master and see what happens then
>
>What would be a useful starting point would be to see what
>lspci -vxx and lspci -vxx -H1 think
>
>
>
Here are the relevant bits out of "lspci -vxx"

00:00.0 Host bridge: Silicon Integrated Systems [SiS]: Unknown device
0648 (rev 02)
Subsystem: Asustek Computer, Inc.: Unknown device 8086
Flags: bus master, medium devsel, latency 32
Memory at d0000000 (32-bit, non-prefetchable) [size=256M]
Capabilities: [c0] AGP version 3.0
00: 39 10 48 06 07 00 10 22 02 00 00 06 00 20 80 00
10: 00 00 00 d0 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 86 80
30: 00 00 00 00 c0 00 00 00 00 00 00 00 00 00 00 00

00:01.0 PCI bridge: Silicon Integrated Systems [SiS] 5591/5592 AGP
(prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Memory behind bridge: cf000000-cfffffff
Prefetchable memory behind bridge: eff00000-febfffff
00: 39 10 01 00 07 00 00 00 00 00 04 06 00 00 01 00
10: 00 00 00 00 00 00 00 00 00 01 01 00 e0 d0 00 20
20: 00 cf f0 cf f0 ef b0 fe 00 00 00 00 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08 00

00:02.0 ISA bridge: Silicon Integrated Systems [SiS]: Unknown device
0963 (rev 04)
Flags: bus master, medium devsel, latency 0
00: 39 10 63 09 0f 00 00 02 04 00 01 06 00 00 80 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

and "lspci -vxx -H1"

00:00.0 Host bridge: Silicon Integrated Systems [SiS]: Unknown device
0648 (rev 02)
Subsystem: Asustek Computer, Inc.: Unknown device 8086
Flags: bus master, medium devsel, latency 32
Memory at d0000000 (32-bit, non-prefetchable) {Only difference here}
Capabilities: [c0] AGP version 3.0
00: 39 10 48 06 07 00 10 22 02 00 00 06 00 20 80 00
10: 00 00 00 d0 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 86 80
30: 00 00 00 00 c0 00 00 00 00 00 00 00 00 00 00 00

00:01.0 PCI bridge: Silicon Integrated Systems [SiS] 5591/5592 AGP
(prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Memory behind bridge: cf000000-cfffffff
Prefetchable memory behind bridge: eff00000-febfffff
00: 39 10 01 00 07 00 00 00 00 00 04 06 00 00 01 00
10: 00 00 00 00 00 00 00 00 00 01 01 00 e0 d0 00 20
20: 00 cf f0 cf f0 ef b0 fe 00 00 00 00 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08 00

00:02.0 ISA bridge: Silicon Integrated Systems [SiS]: Unknown device
0963 (rev 04)
Flags: bus master, medium devsel, latency 0
00: 39 10 63 09 0f 00 00 02 04 00 01 06 00 00 80 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

(There's no difference in the output for the SIS963)

I'll have a look at APCI later today.

--
John Collins Xi Software Ltd www.xisl.com