Re: [ECOS] PCI Ethernet card (DHCP issue)

["Michael Anburaj" <embeddedeng at hotmail dot com>]

Hi,

Thanks to Andrew & Eric.

The problem was with the atlas pci definitions.

HAL_PCI_TRANSLATE_INTERRUPT() macro of plf_io.h was not complete. I fixed it 
& the eth interface works fine now. I will send the patch for it soon.


Questions:
1. The ethereal debug info showed the following:
	From MIPS board: DHCP discover
	From MIPS board: DHCP discover
	From MIPS board: DHCP discover
	From MIPS board: DHCP discover
	From RH9 host: DHCP Offer
	From RH9 host: DHCP Offer
	From RH9 host: DHCP Offer
	From RH9 host: DHCP Offer


This got me confused. It looked like the host was not responding for some 
reason. But, actually the MIPS board was dropping packets, because of the 
PCI INT vector setting. The above ethereal info does not make sense to me.

I feel it must have been like this,

	From MIPS board: DHCP discover
	From RH9 host: DHCP Offer <dropped by MIPS board due to INT vector issue>
	From MIPS board: DHCP discover
	From RH9 host: DHCP Offer <dropped by MIPS board due to INT vector issue>
	From MIPS board: DHCP discover
	From RH9 host: DHCP Offer <dropped by MIPS board due to INT vector issue>
	From MIPS board: DHCP discover
	From RH9 host: DHCP Offer <dropped by MIPS board due to INT vector issue>

Did ethereal mislead me with wrong info.? or did I interpret it wrongly?

2. The PCI interrupts seems to be mapped in the following manner <My 
assumption>:

PCI device number		Interrupt controller PIN
0,4,8...				INTC
1,5,9...				INTD
2,6,10...				INTA
3,7,11...				INTB

Is this right? Let me know how to know this & is there any material 
regarding this?

3. If I need to send a atlas hal patch, let me know how to generate change 
list. Please point me to a document for the same.

Thanks a lot & cheers,
-Mike.

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