On Thu, Jan 28, 2016 at 06:33:32PM +0900, Tetsuya Mukawa wrote:
> This patch addss function pointers to abstract pci access method.
> This abstraction layer will be used when virtio-net PMD supports
> container extension.
>
> The below functions abstract how to access to pci configuration space.
>
> struct virtio_pci_cfg_ops {
> int (*map)(...);
> void (*unmap)(...);
> void *(*get_mapped_addr)(...);
> int (*read)(...);
> };
>
> The pci configuration space has information how to access to virtio
> device registers. Basically, there are 2 ways to acccess to the
> registers. One is using portio and the other is using mapped memory.
> The below functions abstract this access method.
One question: is there a way to map PCI memory with Qtest? I'm thinking
if we can keep the io_read/write() for Qtest as well, if so, code could
be simplified, a lot, IMO.
--yliu
