From: GaLi <g_cavelier@yahoo.fr>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] IDE busmaster DMA support
Date: Fri, 30 Sep 2005 12:15:04 +0200 [thread overview]
Message-ID: <433D1028.4080706@yahoo.fr> (raw)
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 reply other threads:[~2005-09-30 10:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-30 10:15 GaLi [this message]
2005-09-30 11:17 ` [Qemu-devel] IDE busmaster DMA support Hetz Ben Hamo
2005-09-30 12:20 ` GaLi
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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