[src/trunk]: src/sys/dev/pci On powerpc, recognize PCI Express RC root bridges.

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/830373e1e5b0
branches:  trunk
changeset: 759500:830373e1e5b0
user:      matt <matt%NetBSD.org@localhost>
date:      Sat Dec 11 18:25:02 2010 +0000

description:
On powerpc, recognize PCI Express RC root bridges.

diffstat:

 sys/dev/pci/ppb.c |  15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

diffs (36 lines):

diff -r af1f6fa03f7f -r 830373e1e5b0 sys/dev/pci/ppb.c
--- a/sys/dev/pci/ppb.c Sat Dec 11 18:22:24 2010 +0000
+++ b/sys/dev/pci/ppb.c Sat Dec 11 18:25:02 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ppb.c,v 1.42 2010/02/24 22:38:01 dyoung Exp $  */
+/*     $NetBSD: ppb.c,v 1.43 2010/12/11 18:25:02 matt Exp $    */
 
 /*
  * Copyright (c) 1996, 1998 Christopher G. Demetriou.  All rights reserved.
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ppb.c,v 1.42 2010/02/24 22:38:01 dyoung Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ppb.c,v 1.43 2010/12/11 18:25:02 matt Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -68,6 +68,17 @@
            PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_PCI)
                return 1;
 
+#ifdef __powerpc__
+       if (PCI_CLASS(pa->pa_class) == PCI_CLASS_PROCESSOR &&
+           PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_PROCESSOR_POWERPC) {
+               pcireg_t bhlc = pci_conf_read(pa->pa_pc, pa->pa_tag,
+                   PCI_BHLC_REG);
+               if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_FREESCALE
+                   && PCI_HDRTYPE(bhlc) == PCI_HDRTYPE_RC)
+               return 1;
+       }
+#endif
+
        return 0;
 }