From: "Steven J. Hill" <sjhill@xxxxxxxx>
Turns on PCI 2.1 compatibility for the Malta platform for the
PIIX4 controller. Change start address to avoid conflicts with
the ACPI and SMB devices.
Signed-off-by: Steven J. Hill <sjhill@xxxxxxxx>
---
arch/mips/mti-malta/malta-pci.c | 5 +++--
arch/mips/mti-malta/malta-setup.c | 14 ++++++++++++++
2 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/arch/mips/mti-malta/malta-pci.c b/arch/mips/mti-malta/malta-pci.c
index bf80921..afeb619 100644
--- a/arch/mips/mti-malta/malta-pci.c
+++ b/arch/mips/mti-malta/malta-pci.c
@@ -241,8 +241,9 @@ void __init mips_pcibios_init(void)
return;
}
- if (controller->io_resource->start < 0x00001000UL) /* FIXME */
- controller->io_resource->start = 0x00001000UL;
+ /* Change start address to avoid conflicts with ACPI and SMB devices */
+ if (controller->io_resource->start < 0x00002000UL) /* FIXME */
+ controller->io_resource->start = 0x00002000UL;
iomem_resource.end &= 0xfffffffffULL; /* 64 GB */
ioport_resource.end = controller->io_resource->end;
diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c
index b7f37d4..b45b343 100644
--- a/arch/mips/mti-malta/malta-setup.c
+++ b/arch/mips/mti-malta/malta-setup.c
@@ -222,3 +222,17 @@ void __init plat_mem_setup(void)
board_be_init = malta_be_init;
board_be_handler = malta_be_handler;
}
+
+/* Enable PCI 2.1 compatibility in PIIX4. */
+static void __init quirk_dlcsetup(struct pci_dev *dev)
+{
+ u8 dlc;
+
+ /* Enable passive releases and delayed transactions. */
+ (void) pci_read_config_byte(dev, 0x82, &dlc);
+ dlc |= 7;
+ (void) pci_write_config_byte(dev, 0x82, dlc);
+}
+
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_0,
+ quirk_dlcsetup);
--
1.7.9.6
