On 03/18/11 07:13, John Baldwin wrote:
Author: jhb Date: Fri Mar 18 12:13:04 2011 New Revision: 219737 URL: http://svn.freebsd.org/changeset/base/219737Log: Fix a few issues with HyperTransport devices and MSI interrupts: - Always enable the HyperTransport MSI mapping window for HyperTransport to PCI bridges (these show up as HyperTransport slave devices). The mapping windows in PCI-PCI bridges are enabled by existing code in the PCI-PCI bridge driver as MSI requests propagate up the device tree, but Host-PCI bridges don't really show up in that tree. - If the PCI device at domain 0 bus 0 slot 0 function 0 is not a HyperTransport device, then blacklist MSI on any other HT devices in the system. Linux has a similar quirk.
I think this last change only works on x86 systems. My powerpc desktop has hypertransport and MSI, but PCI bus 0 (the PCI-E bus with the graphics card in it) is not connected over hypertransport and has nothing to do with it. Also, the root host->HT bridge doesn't show up in PCI space at all.
-Nathan _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "[email protected]"
