Hi all,
I think I've noticed a general linux-BIOS problem: Some PCI devices are not
being enabled for bus mastery! Let me more clearly explain the context:
1) According to my handy PCI book: All bus master capable PCI devices must
implement bit 2 of the command register.
2) Most devices that i
On Tue, 2003-01-14 at 09:32, Kevin Hester wrote:
> Hi all,
>
> I think I've noticed a general linux-BIOS problem: Some PCI devices are not
> being enabled for bus mastery! Let me more clearly explain the context:
>
> 1) According to my handy PCI book: All bus master capable PCI devices must
>
we don't turn on bus master as that could be very hazardous to your health
-- imagine an unitialized PCI device coming up with bus master enabled. It
is at that point allowed to do DMA cycles to RAM without having been
initialized by a driver. OUCH.
In my opinion if the driver is not turning o
"Ronald G. Minnich" <[EMAIL PROTECTED]> writes:
> we don't turn on bus master as that could be very hazardous to your health
> -- imagine an unitialized PCI device coming up with bus master enabled. It
> is at that point allowed to do DMA cycles to RAM without having been
> initialized by a dri
On 14 Jan 2003, Eric W. Biederman wrote:
> I am not totally certain that it is buggy. There are places this
> can be reasonable behavior. Experience with etherboot shows that
> normally boot devices at least have bus master set by the BIOS.
I can see how they would do this, but I still find it
Smart. I'll fix the driver rather than doing the Award work around. Ollie,
thanks for checking the spec.
On Tuesday 14 January 2003 06:54, Ronald G. Minnich wrote:
> we don't turn on bus master as that could be very hazardous to your health
> -- imagine an unitialized PCI device coming up with
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