Messages in this thread | | | Date | Thu, 25 Jul 2002 10:28:56 +0200 | From | Marcin Dalecki <> | Subject | Re: [RFC/CFT] cmd640 irqlocking fixes |
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Vojtech Pavlik wrote:
> > The kernel functions are OK. The problem is that the kernel can use > PCIBIOS calls to set the registers. And certain old buggy BIOSes which > violate the PCI spec can use wrong size data transfers to set the > registers, which the CMD640 doesn't like. > > IMHO the best workaround here would be either to disable PCIBIOS calls > and revert to conf1 or conf2 in the PCI code if a CMD640 is present, or > just panic() in the CMD640 code and suggest to the user to use > "pci=nobios" on the kernel command line. I'd actually prefer the later. >
From a long long time ago during the first days of this driver I remember that those chips could be wired to both PCI and VLB(ISA) bus. And this is the main reaons why the functions is question exist in first place -> "emulating" PCI configuration space access on VLB.
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