[LinuxBIOS] another question for cs5536

Songmao Tian tiansm at lemote.com
Fri Jul 6 02:37:20 CEST 2007


Marc Jones wrote:
> Peter Stuge wrote:
>   
>> On Thu, Jul 05, 2007 at 10:34:53PM +0800, Songmao Tian wrote:
>>     
>>> with regard to interrupt signal, I am still puzzled with the
>>> PCI_INTA#, it is said that it's a input io. Shouldn't it output
>>> the interrupt signal to cpu?
>>>       
>> I suspect it is the signal facing PCI devices.
>>
>> The signal facing the CPU is probably inside the GeodeLink somewhere.
>>
>>
>> //Peter
>>
>>     
>
> Peter is correct. The PCI_INTA# from the CPU(northbridge) to the cs5536 
> is for graphics and/or AES egine interrupts. The interrupt signal(INTR#) 
> from the cs5536 to the CPU is in the sideband serial packet.  Look for 
> "CPU Interface Serial (CIS)" in the 5536 databook for more information.
>
> Marc
>
>
>   

I got it:), I suspect that, but I haven't notice the that there's pci 
devices in northbridge.
thanks Marc, thanks Peter.






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