On Thu, Jul 24, 2008 at 03:33:38PM +0100, Alan Cox wrote: > > Ok, so this controller is not performing to the IRQ portion of the PCI > > IDE specification, but is this any reason to force it back into legacy > > mode? > > Well the obvious reason to do that is that is what the BIOS guide says > and what the standards expect. Given that legacy mode has no performance > impact at all as it just changes the IRQ interpretation and the port > mapping rules it seems silly not to do that I've changed drivers/ata/pata_ali.c to change the mode back to compatibility mode, but libata-sff.c is still trying to use the pci configuration BARs to map the control registers. If the copy of the "PCI IDE Controller Specification, Revision 1.0" [1] is to be belived, the values in the PCI BARs should be ignored. [1] http://suif.stanford.edu/~csapuntz/specs/pciide.ps > Alan > -- > 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 -- -- Ben Q: What's a light-year? A: One-third less calories than a regular year. -- 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
