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path: root/drivers/pci/probe.c
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-rw-r--r--drivers/pci/probe.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index e159d660449..0eeac60042b 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -679,6 +679,33 @@ static int pci_setup_device(struct pci_dev * dev)
pci_read_bases(dev, 6, PCI_ROM_ADDRESS);
pci_read_config_word(dev, PCI_SUBSYSTEM_VENDOR_ID, &dev->subsystem_vendor);
pci_read_config_word(dev, PCI_SUBSYSTEM_ID, &dev->subsystem_device);
+
+ /*
+ * Do the ugly legacy mode stuff here rather than broken chip
+ * quirk code. Legacy mode ATA controllers have fixed
+ * addresses. These are not always echoed in BAR0-3, and
+ * BAR0-3 in a few cases contain junk!
+ */
+ if (class == PCI_CLASS_STORAGE_IDE) {
+ u8 progif;
+ pci_read_config_byte(dev, PCI_CLASS_PROG, &progif);
+ if ((progif & 1) == 0) {
+ dev->resource[0].start = 0x1F0;
+ dev->resource[0].end = 0x1F7;
+ dev->resource[0].flags = IORESOURCE_IO;
+ dev->resource[1].start = 0x3F6;
+ dev->resource[1].end = 0x3F6;
+ dev->resource[1].flags = IORESOURCE_IO;
+ }
+ if ((progif & 4) == 0) {
+ dev->resource[2].start = 0x170;
+ dev->resource[2].end = 0x177;
+ dev->resource[2].flags = IORESOURCE_IO;
+ dev->resource[3].start = 0x376;
+ dev->resource[3].end = 0x376;
+ dev->resource[3].flags = IORESOURCE_IO;
+ }
+ }
break;
case PCI_HEADER_TYPE_BRIDGE: /* bridge header */