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-rw-r--r--sys/dev/pci/pci_pci.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/sys/dev/pci/pci_pci.c b/sys/dev/pci/pci_pci.c
index 29a82e1f5909..e8be83589dcf 100644
--- a/sys/dev/pci/pci_pci.c
+++ b/sys/dev/pci/pci_pci.c
@@ -186,6 +186,32 @@ pcib_attach_common(device_t dev)
case 0x060513d7: /* Toshiba ???? */
sc->flags |= PCIB_SUBTRACTIVE;
break;
+
+ /* Compaq R3000 BIOS sets wrong subordinate bus number. */
+ case 0x00dd10de:
+ {
+ char *cp;
+
+ if ((cp = getenv("smbios.planar.maker")) == NULL)
+ break;
+ if (strncmp(cp, "Compal", 6) != 0) {
+ freeenv(cp);
+ break;
+ }
+ freeenv(cp);
+ if ((cp = getenv("smbios.planar.product")) == NULL)
+ break;
+ if (strncmp(cp, "08A0", 4) != 0) {
+ freeenv(cp);
+ break;
+ }
+ freeenv(cp);
+ if (sc->subbus < 0xa) {
+ pci_write_config(dev, PCIR_SUBBUS_1, 0xa, 1);
+ sc->subbus = pci_read_config(dev, PCIR_SUBBUS_1, 1);
+ }
+ break;
+ }
}
/*