DPRAM is memory mapped with PCI card. If i want to do data transfer from dpram to local memory, what is the procedure?.
I will get the base address of DPRAM using pci_resource_start() and pci_resource_end() API calls. I will enable the bus master capability using pci_set_master() API call. Then how do initiate the transfer. you mean PCI card will have specific registers for configuration like source address, enable/disable dma operations. Is my understanding correct ?
Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote:
On Wed, 2006-02-22 at 08:25 -0800, munees waran wrote:
> You mean PCI card should have the hardware connection with DMA
> engine(controller). So that i can use it.
no I mean that the PCI card should itself contain a DMA engine.
Eg it needs to be a PCI Bus Master
> What is the latest dma controller used in pentium 4 ?
> how do i find that ?
You seem to not understand the PCI model!
The PCI model is that PCI Bus Masters *themselves* have a DMA engine.
There is no generic DMA engine on the cpu or motherboard.
(again experimental motherboards excluded)
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