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[Qemu-devel] IDE busmaster DMA support
From: |
GaLi |
Subject: |
[Qemu-devel] IDE busmaster DMA support |
Date: |
Fri, 30 Sep 2005 12:15:04 +0200 |
User-agent: |
Mozilla Thunderbird 1.0.6 (X11/20050716) |
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 ?
- [Qemu-devel] IDE busmaster DMA support,
GaLi <=