Messages in this thread | ![/](/images/icornerl.gif) | | Date | Tue, 7 Sep 2004 21:12:22 -0700 | From | "David S. Miller" <> | Subject | Re: multi-domain PCI and sysfs |
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On Tue, 7 Sep 2004 23:39:49 -0400 Jon Smirl <jonsmirl@gmail.com> wrote:
> On Tue, 7 Sep 2004 16:11:40 -0700, David S. Miller <davem@davemloft.net> wrote: > > On Tue, 7 Sep 2004 18:58:53 -0400 > > Jon Smirl <jonsmirl@gmail.com> wrote: > > > How many active VGA devices can I have in this system 1 or 4? If the > > > answer is 4, how do I independently address each VGA card? If the > > > answer is one, you can see why I want a pci0000 node to hold the > > > attribute for turning it off and on. > > > > I don't know about the above but for a multi-domain system the > > way it works is that the I/O ports are accessed using a different > > base address for each domain. > > How does this work for IO ports in port space instead of memory mapped IO?
Those are IO ports in port space. IO ports and PCI memory space just live in different physical memory windows, no special instructions for IO port space access as on x86. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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