Messages in this thread | | | From | Bjorn Helgaas <> | Subject | Re: CSB5 IDE does not fully support native mode?? | Date | Thu, 26 May 2005 10:55:38 -0600 |
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On Thursday 26 May 2005 8:24 am, Alan Cox wrote: > In order to keep the legacy world from falling to bits IDE and VGA have > some ugly hacks in the PCI spec. > > In legacy mode an IDE device appears at the "old" standard IDE addresses > and uses an external IRQ pin wired to the ISA IRQ lines (14 or 15). In > native mode it behaves like a PCI device, honouring the PCI bars and > using the PCI INT lines.
This has been niggling in my mind for a while -- in legacy mode, the device should use IRQ 14/15. But I think we still call pci_enable_device(), which sets up IRQ routing according to the usual PCI rules. Should we be using pci_enable_device() at all in legacy mode? - 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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