Commit 8736595b authored Jul 02, 2008 by Thomas Bogendoerfer Committed by Ralf Baechle Jul 15, 2008

[MIPS] Enable FAST-20 for onboard scsi



Both onboard controller of the O2 support FAST-20 transfer speeds,
but the bit, which signals that to the aic driver, isn't set. Instead
of adding detection code to the scsi driver, we just fake the missing
bit in the PCI config space of the scsi chips.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent f2bc713f

arch/mips/pci/ops-mace.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -61,6 +61,13 @@ mace_pci_read_config(struct pci_bus *bus, unsigned int devfn,
		/* ack possible master abort */
		mace->pci.error &= ~MACEPCI_ERROR_MASTER_ABORT;
		mace->pci.control = control;
		/*
		* someone forgot to set the ultra bit for the onboard
		* scsi chips; we fake it here
		*/
		if (bus->number == 0 && reg == 0x40 && size == 4 &&
		(devfn == (1 << 3) \|\| devfn == (2 << 3)))
		*val \|= 0x1000;

		DPRINTK("read%d: reg=%08x,val=%02x\n", size * 8, reg, *val);

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