Re: [Qemu-devel] [PATCH 01/10] Add stub functions for PCI device models to do PCI DMA

[Avi Kivity]

On 09/01/2011 07:05 PM, Anthony Liguori wrote:
> The challenge is what you do about something like ne2k where the core 
> chipset can either be a PCI device or an ISA device.  You would have 
> to implement a wrapper around pci_dma_rw() in order to turn it into 
> cpu_physical_memory_rw when doing ISA.

btw, ISA DMA is very different, no?  You program a dma controller to 
copy memory from the device to RAM (or vice versa); the device never 
initiates a transaction IIRC.

--
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