On Mon, Jan 16, 2012 at 04:02:31PM -0800, Linus Torvalds wrote: > On Mon, Jan 16, 2012 at 3:54 PM, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote: > >> Part of the problem with force-enable is that the MMIO BAR may need a > >> value, and not have it. That, and an expectations mismatch between BIOS > > > > That's fine - we can happily assign one at boot time. > > Actually, I think the reason that Matthews patch doesn't work for me > is that on my device, BAR #5 really is a _port_ BAR. > > I didn't play with it much - busy merging and looking at various other > issues - but I'm starting to wonder whether maybe that 8086:1c01 chip > doesn't support AHCI at all. Or maybe it does something differently. > > Other reports of this have BAR#5 either clear, or an MMIO BAR. That > > Region 5: I/O ports at ffe0 [size=16] > > looks really odd. Matthew's patch uses > > pci_assign_resource(pdev, 5); > > but if it is a PIO region, that won't help anything.. More recent ICHs may need different setup here. The datasheet should have enough to figure it out, but I can take a look once I get back from LCA. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
