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Date: Fri, 30 Sep 2005 13:17:55 +0200
From: Hetz Ben Hamo <hetzbh@gmail.com>
Subject: Re: [Qemu-devel] IDE busmaster DMA support
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To: qemu-devel@nongnu.org

Hi,

Which IDE driver do u try to write? for QEMU? or for a guest OS?

The IDE implementation of QEMU has few bugs (notice how the hack win2k
installation needs), so I would suggest to you to either try it with
BOCHS or with a trial version of VMWare.

Thanks,
Hetz

On 9/30/05, GaLi <g_cavelier@yahoo.fr> wrote:
>
> 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 ?
>
>
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