From: GaLi <g_cavelier@yahoo.fr>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] IDE busmaster DMA support
Date: Fri, 30 Sep 2005 14:20:03 +0200 [thread overview]
Message-ID: <433D2D73.60404@yahoo.fr> (raw)
In-Reply-To: <41e41e7a0509300417j4eb7daf5je30b164b30b35596@mail.gmail.com>
It's an IDE driver for my own OS.
I don't think it comes from qemu because linux get it right. I tried to
read linux source code but it's way too complicated.
I'll try in bochs and VMWare and tell you the results
Hetz Ben Hamo wrote:
> 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 ?
next prev parent reply other threads:[~2005-09-30 12:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-30 10:15 [Qemu-devel] IDE busmaster DMA support GaLi
2005-09-30 11:17 ` Hetz Ben Hamo
2005-09-30 12:20 ` GaLi [this message]
2005-09-30 15:16 ` Lennert Buytenhek
-- strict thread matches above, loose matches on Subject: below --
2005-09-30 12:04 Juergen Keil
2005-09-30 13:00 ` GaLi
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