Messages in this thread | | | Date | Wed, 6 Feb 2002 13:22:55 +0100 | From | Pavel Machek <> | Subject | Re: driverfs support for motherboard devices |
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Hi!
> > > On Tue, Feb 05, 2002 at 10:43:14AM -0800, Patrick Mochel wrote: > > > > I think that ide should get its own bus, as a child of the ide controller. > > > > I haven't looked at ide yet at all. But, on most modern systems, the ide > > > > controller is a function of the southbridge, so ide devices should go > > > > under that. Like what the usb stuff does now... > > > > > > What about, say, a Promise PCI IDE card? You really need to reference > > > the parent PCI device when the is one. > > > > LOL, how about ones that are quad-channel with a DEC-Bridge to slip the > > local BUSS? > > LOL? I don't understand... > > I don't see how any of those cases are necessarily hard to visualize. > > Case 1: Typical PC with IDE as function of southbridge. > > pci0 > | > -- 07.2 (IDE controller) > | > --- disk0 > | > --- disk1 > > Case 2: Promise IDE Controller with 2 channels > > > pci0 > | > --- 03.0 (Promise IDE Controller) > | > --- channel0 > | > ---- disk0 > | > ---- disk1 >
These are easy ones, but what about
Case 4: 386 with no PCI
and what's worse
Case 5: 486 with both PCI and VLB, where ide is on the VLB?
cases 4 and 5 are IMO hard, because it is difficult to know where it really is... and I'm not sure current kernel knows it. Pavel -- (about SSSCA) "I don't say this lightly. However, I really think that the U.S. no longer is classifiable as a democracy, but rather as a plutocracy." --hpa - 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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