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path: root/drivers/pci/quirks.c
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Diffstat (limited to 'drivers/pci/quirks.c')
-rw-r--r--drivers/pci/quirks.c31
1 files changed, 30 insertions, 1 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index f28ebdd3958..dda6099903c 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1142,6 +1142,9 @@ static void __devinit quirk_intel_ide_combined(struct pci_dev *pdev)
case 0x27c4:
ich = 7;
break;
+ case 0x2828: /* ICH8M */
+ ich = 8;
+ break;
default:
/* we do not handle this PCI device */
return;
@@ -1161,7 +1164,7 @@ static void __devinit quirk_intel_ide_combined(struct pci_dev *pdev)
else
return; /* not in combined mode */
} else {
- WARN_ON((ich != 6) && (ich != 7));
+ WARN_ON((ich != 6) && (ich != 7) && (ich != 8));
tmp &= 0x3; /* interesting bits 1:0 */
if (tmp & (1 << 0))
comb = (1 << 2); /* PATA port 0, SATA port 1 */
@@ -1342,6 +1345,32 @@ void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
pci_do_fixups(dev, start, end);
}
+/* Enable 1k I/O space granularity on the Intel P64H2 */
+static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev)
+{
+ u16 en1k;
+ u8 io_base_lo, io_limit_lo;
+ unsigned long base, limit;
+ struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
+
+ pci_read_config_word(dev, 0x40, &en1k);
+
+ if (en1k & 0x200) {
+ printk(KERN_INFO "PCI: Enable I/O Space to 1 KB Granularity\n");
+
+ pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
+ pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
+ base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
+ limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
+
+ if (base <= limit) {
+ res->start = base;
+ res->end = limit + 0x3ff;
+ }
+ }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
+
EXPORT_SYMBOL(pcie_mch_quirk);
#ifdef CONFIG_HOTPLUG
EXPORT_SYMBOL(pci_fixup_device);