Mike-
> I should have summarised this by saying: Correct use of the latency
> timer will shorten your DMA bursts for you when necessary, giving you the
> best of both worlds. When it's safe to run a long burst, you will. When
> you need to push a device off the bus, that will happen too.
Af
> > On Sun, 05 Dec 1999, you wrote:
> Conversely, you can achieve the same latency reduction by setting the
> latency timer to 16, without increasing your overheads there. (This isn't
> actually entirely true, as you may run into busmaster ping-pong with more
> than one in the system, but you'll g
> On Sun, 05 Dec 1999, you wrote:
> >
> > > The question: Why doesn't this work... it seem so straight forward...
> >
> > I'm not sure about the code in question, but the basic assumptions you're
> > making about PCI's behaviour are flawed. To achieve the goal you're
> > trying to, you need to
On Sun, 05 Dec 1999, you wrote:
>
> > The question: Why doesn't this work... it seem so straight forward...
>
> I'm not sure about the code in question, but the basic assumptions you're
> making about PCI's behaviour are flawed. To achieve the goal you're
> trying to, you need to reduce the va
4 matches
Mail list logo
