On Wed, May 23, 2007 at 04:15:01PM +0400, Manu Abraham wrote:
> Hi,
>
> Do the PCI Express chipsets also use the same PCI API ?
At the Linux kernel driver level, yes, they do.
> The device
> specifications are thus for the device that i am looking at:
>
> PCI Express interface
>
> * Compliant to PCI Express Base Specification 1.0a
> * The PCI Express circuit supports isochronous data traffic intended
> for uninterrupted transfer of streaming data like video streaming
> o x1 PCI Express endpoint (2.5 Gbit/s)
> o Data and clock recovery from serial stream
> o Low jitter and BER
> * Type 0 configuration space header
> o 64-bit addressing
> o Single BAR; programmable address range of 17 bits, 18 bits,
> 19 bits or 20 bits dependent on application requirements
> * PCI Express capabilities
> o 128 bytes write packet size and 64 bytes read packet size
> o MSI support
> o Software directed power management of four device power
> states (D0 to D3)
> o Active state power management of link states
> o Vendor specific capability for VC1 support; after reset VC1
> isochronous capability is disabled
>
> I have been trying the said card with a normal PCI style driver, but
> while booting the kernel (2.6.21.1) i do get a message like this (an
> Intel DP965LT motherboard with BIOS version:
> MQ96510J.86A.1612.2006.1227.1513)
> Also accessing the interrupt registers causes a hard freeze, for which
> only the RESET button seems to be of any help.
>
> Uncompressing Linux .. Ok, booting the kernel.
> BIOS bug, no explicit IRQ entries, using default mptable. (tell your hw
> vendor)
> PCI: Failed to allocate mem resource #6:20000@30000000 for 0000:01:00.0
>
> Any ideas as to what could be wrong ?
What type of PCI device is this? What driver is controlling it? What
is the output of 'lspci -v' at boot time?
thanks,
greg k-h
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