Date: Sun, 3 Nov 2013 18:14:46 +0000 (UTC) From: Marcel Moolenaar <marcel@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r257581 - projects/altix2/sys/ia64/sgisn Message-ID: <201311031814.rA3IEkBE080696@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: marcel Date: Sun Nov 3 18:14:46 2013 New Revision: 257581 URL: http://svnweb.freebsd.org/changeset/base/257581 Log: o Update copyright o Add a comment explaining what's happening with the PCI bridge discovery and in particular the conditional involving the NASID. Modified: projects/altix2/sys/ia64/sgisn/sgisn_shub.c Modified: projects/altix2/sys/ia64/sgisn/sgisn_shub.c ============================================================================== --- projects/altix2/sys/ia64/sgisn/sgisn_shub.c Sun Nov 3 17:19:17 2013 (r257580) +++ projects/altix2/sys/ia64/sgisn/sgisn_shub.c Sun Nov 3 18:14:46 2013 (r257581) @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2011 Marcel Moolenaar + * Copyright (c) 2011-2013 Marcel Moolenaar * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -474,6 +474,14 @@ sgisn_shub_attach(device_t dev) if (r.sal_status != 0 || addr == 0) continue; + /* + * Filter PCI bridges not connected to the SHub + * instance in question. We use the NASID to match + * bridges to SHubs. + * Note that the TIOCP bridge has bit 0 of the + * NASID set, which is why we want to ignore bit 0. + * Subtracting 1 from the mask does the trick. + */ fwbus = (void *)IA64_PHYS_TO_RR7(addr); if (((fwbus->bus_base >> sc->sc_nasid_shft) & (sc->sc_nasid_mask - 1)) != sc->sc_nasid)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201311031814.rA3IEkBE080696>