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lx800 pci-isa bridge ite8888 driver

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lx800 pci-isa bridge ite8888 driver

Postby Rodney Stevens » Mon Oct 29, 2007 12:48 am

dear All

We are trying to use a SBC with a Geode lx800 processor with a ite8888
pci-isa (pc104) bridge.
Computer works fine we can see serial ports, nic etc, but we cannot access
the pc-104 bus and have been told that we need a driver for this chip.

Is there a driver available for this chip for 6.3.2 or is there already some
support in the pci driver that we need to enable for this to work.

Or am I just lacking knowledge and should read the manual and if so what
section would be a help.

Thanks

Rod Stevens
CSIRO Minerals
Rodney Stevens
 

RE: lx800 pci-isa bridge ite8888 driver

Postby maschoen » Mon Oct 29, 2007 7:32 pm

My memory is a little dim on this, but I thought that the pc-104 bus is just an ISA bus in a stackable architecture. As such, what would accessing the bus mean other than being able to see serial ports, nic etc?
maschoen
QNX Master
 
Posts: 2640
Joined: Wed Jun 25, 2003 5:18 pm

Re: lx800 pci-isa bridge ite8888 driver

Postby Rodney Stevens » Wed Oct 31, 2007 12:57 am

Maschoen

Yes you are right the pc-104 bus is just a repackaged isa bus, but it seams
that this particular mother board does not support isa/pc-104 directly, the
isa bus is addressed through a pci-isa bus bridging chip that I am told
needs a driver to support this functionality.

The mother board is very new and comes with a cd with a windows driver, but
no qnx drivers as one would expect.

Yes I have access to the serial ports and network via the pci bus, but I
cannot access any of my pc-104 cards.

Rod

"maschoen" <maschoen@pobox-dot-com.no-spam.invalid> wrote in message
news:fg5e0h$nmk$1@inn.qnx.com...
My memory is a little dim on this, but I thought that the pc-104 bus
is just an ISA bus in a stackable architecture. As such, what would
accessing the bus mean other than being able to see serial ports, nic
etc?
Rodney Stevens
 

Re: lx800 pci-isa bridge ite8888 driver

Postby Armin » Wed Oct 31, 2007 8:06 am

Rodney Stevens wrote:
Maschoen

Yes you are right the pc-104 bus is just a repackaged isa bus, but it seams
that this particular mother board does not support isa/pc-104 directly, the
isa bus is addressed through a pci-isa bus bridging chip that I am told
needs a driver to support this functionality.

The ISA-to-PCI bridge must be initialized at start-up of the system.
(start-up code / BSP ) The bridge works then completely transparent as a
piece of hardware.

I have never seen a driver for an ISA-to_PCI bridge ...

--Armin


The mother board is very new and comes with a cd with a windows driver, but
no qnx drivers as one would expect.

Yes I have access to the serial ports and network via the pci bus, but I
cannot access any of my pc-104 cards.

Rod

"maschoen" <maschoen@pobox-dot-com.no-spam.invalid> wrote in message
news:fg5e0h$nmk$1@inn.qnx.com...
My memory is a little dim on this, but I thought that the pc-104 bus
is just an ISA bus in a stackable architecture. As such, what would
accessing the bus mean other than being able to see serial ports, nic
etc?


Armin
 

RE: Re: lx800 pci-isa bridge ite8888 driver

Postby maschoen » Wed Oct 31, 2007 8:16 am

Too bad you don't have bios that just sets this up for you. Rather than an active driver, it sounds like you might just need a sequence instructions to configure the chip at boot time. You might want to ask the mother board manufactorer whether the you can get the source for the windows driver.
maschoen
QNX Master
 
Posts: 2640
Joined: Wed Jun 25, 2003 5:18 pm

Re: lx800 pci-isa bridge ite8888 driver

Postby Igor Kovalenko » Wed Oct 31, 2007 8:40 am

Is it (the bridge) reported as 'Other' subclass? QNX used to simply ignore
such bridges, even though they don't require much of a driver. I think they
added an option to the PCI server at some point to try to initialize them in
a 'generic' way.

In the worst case, get a copy of the PCI architecture book, datasheet for
the bridge and source for the PCI server. It should not be much work to get
it supported.

"Rodney Stevens" <rod.stevens@csiro.au> wrote in message
news:fg8jpi$1rh$1@inn.qnx.com...
Maschoen

Yes you are right the pc-104 bus is just a repackaged isa bus, but it
seams that this particular mother board does not support isa/pc-104
directly, the isa bus is addressed through a pci-isa bus bridging chip
that I am told needs a driver to support this functionality.

The mother board is very new and comes with a cd with a windows driver,
but no qnx drivers as one would expect.

Yes I have access to the serial ports and network via the pci bus, but I
cannot access any of my pc-104 cards.

Rod

"maschoen" <maschoen@pobox-dot-com.no-spam.invalid> wrote in message
news:fg5e0h$nmk$1@inn.qnx.com...
My memory is a little dim on this, but I thought that the pc-104 bus
is just an ISA bus in a stackable architecture. As such, what would
accessing the bus mean other than being able to see serial ports, nic
etc?


Igor Kovalenko
 


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