Date: Sun, 18 Oct 2009 17:11:16 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r198211 - head/sys/dev/gem Message-ID: <200910181711.n9IHBG6W074471@svn.freebsd.org>
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Author: nwhitehorn Date: Sun Oct 18 17:11:16 2009 New Revision: 198211 URL: http://svn.freebsd.org/changeset/base/198211 Log: Work around a quirk with the G5 Xserve, which has a fake GMAC controller with an all-zero MAC address. In this case, don't attach. Discussed with: marius Modified: head/sys/dev/gem/if_gem_pci.c Modified: head/sys/dev/gem/if_gem_pci.c ============================================================================== --- head/sys/dev/gem/if_gem_pci.c Sun Oct 18 17:10:39 2009 (r198210) +++ head/sys/dev/gem/if_gem_pci.c Sun Oct 18 17:11:16 2009 (r198211) @@ -295,6 +295,16 @@ gem_pci_attach(device_t dev) GEM_PCI_ROM_OFFSET + j + PCI_VPDRES_LARGE_SIZE + PCI_VPD_SIZE, sc->sc_enaddr, ETHER_ADDR_LEN); #endif + /* + * The Xserve G5 has a fake GMAC with an all-zero MAC address. + * Check for this, and don't attach in this case. + */ + + for (i = 0; i < ETHER_ADDR_LEN && sc->sc_enaddr[i] == 0; i++) {} + if (i == ETHER_ADDR_LEN) { + device_printf(dev, "invalid MAC address\n"); + goto fail; + } if (gem_attach(sc) != 0) { device_printf(dev, "could not be attached\n");
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