Re: [Qemu-devel] enabling bus-master IDE driver

[James Boddington <boddingt@optusnet.com.au>]

Johannes Schindelin wrote:
> Hi,
> 
> On Fri, 5 Nov 2004, Jason Brittain wrote:
> 
> 
>>/dev/hda:
>>  setting using_dma to 1 (on)
>>  HDIO_SET_DMA failed: Operation not permitted
>>  using_dma    =  0 (off)
> 
> 
> Are you sure you did as guest root? This error could happen if you try to
> use hdparm as a plain user. I would expect a different error if the drive
> is not capable of doing DMA.
> 

I am getting the same error with the latest from cvs and with 0.6.0. 
Tired both with and without the busmaster patch. Definately logged in as 
root.

This is what I get during boot.

PIIX3: IDE controller at PCI slot 0000:00:01.1
PIIX3: chipset revision 0
PIIX3: not 100% native mode: will probe irqs later
PCI: Setting latency timer of device 0000:00:01.1 to 64
     ide0: BM-DMA at 0xc000-0xc007, BIOS settings: hda:pio, hdb:pio
     ide1: BM-DMA at 0xc008-0xc00f, BIOS settings: hdc:pio, hdd:pio

I found 2000 is using pio as well.

-- 
    James