On Mon, Oct 01, 2007 at 06:37:44PM -0400, Jeff Garzik wrote: > Olof Johansson wrote: >> Hardware config in my case: >> Highpoint 2310 controller >> PPC (big endian) >> WD Raptor disk >> Works fine with the other controller I've been using (SIL24), and works >> fine if I revert the driver. >> It also works fine if I disable the IOMMU. This would point towards >> either a stale dma mapping, or a missing setup of one. >> Not being much at home in the SATA drivers I could keep digging but I >> figured I'd bring it up first in case it rings a bell for someone. > > The IOMMU data point is certainly interesting. Nothing jumps out on a > re-review of the patch, so keep digging and let us know ;-) Looks like it's caused by enabling vmerge (which tends to be on for the common PPC defconfigs). If I disable it, things look OK. Perhaps the Marvell controller doesn't like requests larger than 64K, or wrapping some boundary. Do you have access to erratas/docs? I have verified it on a powermac now as well (had a quick scare that it might have been some problem with the PA Semi IOMMU, but no). -Olof - 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
