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[PATCH 06/15] [MTI] Enable PIIX4 PCI2.1 compliancy on Malta

To: linux-mips@linux-mips.org
Subject: [PATCH 06/15] [MTI] Enable PIIX4 PCI2.1 compliancy on Malta
From: Raghu Gandham <raghu@mips.com>
Date: Wed, 01 Jul 2009 19:41:12 -0700
Cc: chris@mips.com
In-reply-to: <20090702023938.23268.65453.stgit@linux-raghu>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20090702023938.23268.65453.stgit@linux-raghu>
Sender: linux-mips-bounce@linux-mips.org
User-agent: StGIT/0.14.3
From: Chris Dearman <chris@mips.com>

Signed-off-by: Chris Dearman <chris@mips.com>
---

 arch/mips/mti-malta/malta-setup.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/arch/mips/mti-malta/malta-setup.c 
b/arch/mips/mti-malta/malta-setup.c
index dc78b89..69f5f9c 100644
--- a/arch/mips/mti-malta/malta-setup.c
+++ b/arch/mips/mti-malta/malta-setup.c
@@ -223,3 +223,14 @@ 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 odlc, ndlc;
+       (void) pci_read_config_byte(dev, 0x82, &odlc);
+       /* Enable passive releases and delayed transaction */
+       ndlc = odlc | 7;
+       (void) pci_write_config_byte(dev, 0x82, ndlc);
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_0,
+               quirk_dlcsetup);


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