[PATCH] shpchp: fix improper mmio mapping

[powerpc.git] / drivers / pci / quirks.c

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 3a4f49f..f28ebdd 100644 (file)
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1098,6 +1098,23 @@ static void __init quirk_alder_ioapic(struct pci_dev *pdev)
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,  PCI_DEVICE_ID_INTEL_EESSC,      quirk_alder_ioapic );
 #endif
 
+enum ide_combined_type { COMBINED = 0, IDE = 1, LIBATA = 2 };
+/* Defaults to combined */
+static enum ide_combined_type combined_mode;
+
+static int __init combined_setup(char *str)
+{
+       if (!strncmp(str, "ide", 3))
+               combined_mode = IDE;
+       else if (!strncmp(str, "libata", 6))
+               combined_mode = LIBATA;
+       else /* "combined" or anything else defaults to old behavior */
+               combined_mode = COMBINED;
+
+       return 1;
+}
+__setup("combined_mode=", combined_setup);
+
 #ifdef CONFIG_SCSI_SATA_INTEL_COMBINED
 static void __devinit quirk_intel_ide_combined(struct pci_dev *pdev)
 {
@@ -1164,6 +1181,19 @@ static void __devinit quirk_intel_ide_combined(struct pci_dev *pdev)
        if (prog & comb)
                return;
 
+       /* Don't reserve any so the IDE driver can get them (but only if
+        * combined_mode=ide).
+        */
+       if (combined_mode == IDE)
+               return;
+
+       /* Grab them both for libata if combined_mode=libata. */
+       if (combined_mode == LIBATA) {
+               request_region(0x1f0, 8, "libata");     /* port 0 */
+               request_region(0x170, 8, "libata");     /* port 1 */
+               return;
+       }
+
        /* SATA port is in legacy mode.  Reserve port so that
         * IDE driver does not attempt to use it.  If request_region
         * fails, it will be obvious at boot time, so we don't bother