[Qemu-devel] IDE busmaster DMA support

[GaLi]

Hi,

I'm trying to write an IDE driver with busmaster DMA support.
My problem is that I can't get the right controller registers addresses.

In the IDE BusMaster DMA specification :

"The control registers for the controller are allocated via the
devices Base Address register at offset 0x20 in PCI configuration
space."

If I read the word at offset 0x20 in the PCI configuration space, I get 
0xc001. But if I boot qemu with a linux live-cd, it tells me that BM-DMA 
is at 0xc000

Do I have to init the PCI IDE controller or something ?