On Mon, Jun 23, 2008 at 05:48:07AM -0700, jumpingProgrammer wrote:
> i am working with a board of mpc8313 using default mpc8313erdb.dts.
> But i do not know how can i correctly use DMA to transport data from memory
> to a PCI device.
> i tryed this
> {
> .....
> request_irq(IRQ,....);
> request_dma(.....);
> ....
> }
>
> In request_irq() , i do not know what is the parameter IRQ.
Use pci_dev->irq.
> And , i did not find any words about DMA in mpc8313erdb.dts .
PCI devices can do bus-mastering DMA themselves; request_dma() is for ISA
devices.
-Scott
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