Hi Arjan,
once the system boots up, memory and IO regions will be allocated to PCI card. PCI card doesn't have bus master feature.
If I want to read data from memory or IO regions, memcopy() only be used. Or can i use motherboard dma to transfer the data ?
memcpy_from_io() is just reading from io region and copying to memory using normal transfer method. Pls help me to resolve this.
Thanks & Regards,
Munees.
Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote:
On Wed, 2006-02-22 at 09:11 -0800, munees waran wrote:
> Is PCI standard telling that all PCI cards should have DMA engine
> itself. Or it is optional.
it is optional
>
> If my PCI card doesn't support dma process itself, can i use external
> dma controller to take care of dma memory-to-memory transfer.
there is no external dma controller usually....
>
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