[ixp1200] I have a DMA question.

1 Dec 2003

      Hello.

Have anyone use IXP1200's DMA operation?

I want to use DMA for transferring data from host computer's memory

to IXP1200 evaluation board. 

Sure, my IXP1200 EB is attached to host computer through PCI slot.

And I write Microengine program like below

1. Make DMA descriptor.

2. point tmp1 to DMA descritptor's address 

3.  And use pci_dma instruction like below

pci_dma[tmp1, 0, any_queue], ctx_swap

But, after pci_dma instruction, nothing is done more.

Do I mistake? Or do you have similar situation?

Please give me any advice.

Thanks

Cho, joon-woo