Author: jhb
Date: Wed Jun 13 15:04:50 2012
New Revision: 237008
URL: http://svn.freebsd.org/changeset/base/237008
Log:
Fix a couple of bugs that prevented windows in PCI-PCI bridges from
growing "downward" (moving the start address down). First, an off by
one error caused the end address to be moved down an extra alignment
chunk unnecessarily. Second, when aligning the new candidate starting
address, the wrong bits were masked off.
Tested by: Andrey Zonov andrey zonov org
MFC after: 3 days
Modified:
head/sys/dev/pci/pci_pci.c
Modified: head/sys/dev/pci/pci_pci.c
==============================================================================
--- head/sys/dev/pci/pci_pci.c Wed Jun 13 14:47:03 2012 (r237007)
+++ head/sys/dev/pci/pci_pci.c Wed Jun 13 15:04:50 2012 (r237008)
@@ -893,9 +893,9 @@ pcib_grow_window(struct pcib_softc *sc,
if (start < rman_get_start(w->res)) {
if (rman_first_free_region(&w->rman, &start_free, &end_free) !=
0 || start_free != rman_get_start(w->res))
- end_free = rman_get_start(w->res) - 1;
+ end_free = rman_get_start(w->res);
if (end_free > end)
- end_free = end;
+ end_free = end + 1;
/* Move end_free down until it is properly aligned. */
end_free &= ~(align - 1);
@@ -913,7 +913,7 @@ pcib_grow_window(struct pcib_softc *sc,
if (bootverbose)
printf("\tfront candidate range: %#lx-%#lx\n",
front, end_free);
- front &= (1ul << w->step) - 1;
+ front &= ~(1ul << w->step) - 1;
front = rman_get_start(w->res) - front;
} else
front = 0;
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