linux-kernel - [PATCH 3/3] Add NumaChip quirk

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Message-Id: <1318926156-25504-3-git-send-email-daniel@numascale-asia.com>
Date:	Tue, 18 Oct 2011 16:22:36 +0800
From:	Daniel J Blueman <daniel@...ascale-asia.com>
To:	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	H Peter Anvin <hpa@...or.com>
Cc:	Steffen Persvold <sp@...ascale.com>, linux-kernel@...r.kernel.org,
	x86@...nel.org, Daniel J Blueman <daniel@...ascale-asia.com>
Subject: [PATCH 3/3] Add NumaChip quirk

Add quirk for Numascale's NumaChip to prevent resource conflicts.

v2:
 - [Daniel] rediffed and validated against 3.1-rc10

Signed-off-by: Steffen Persvold <sp@...ascale.com>
Signed-off-by: Daniel J Blueman <daniel@...ascale-asia.com>
---
 drivers/pci/quirks.c    |   14 ++++++++++++++
 include/linux/pci_ids.h |    4 ++++
 2 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 1196f61..051b793 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -2679,6 +2679,20 @@ static void __devinit quirk_hotplug_bridge(struct pci_dev *dev)
 
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
 
+/* Clear all resources on NumaChip to avoid conflicts */
+static void __devinit numachip_resource_fixup(struct pci_dev *pdev)
+{
+	int i;
+
+	for (i = PCI_STD_RESOURCES; i <= PCI_ROM_RESOURCE; i++)
+		memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
+
+	dev_notice(&pdev->dev, "Disabled all PCI resources for NumaChip\n");
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NUMASCALE,
+	PCI_DEVICE_ID_NUMASCALE_NUMACHIP0, numachip_resource_fixup);
+
 /*
  * This is a quirk for the Ricoh MMC controller found as a part of
  * some mulifunction chips.
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index ae96bbe..02e0959 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2400,6 +2400,10 @@
 
 #define PCI_VENDOR_ID_AZWAVE		0x1a3b
 
+#define PCI_VENDOR_ID_NUMASCALE		0x1b47
+#define PCI_DEVICE_ID_NUMASCALE_NUMACHIP0 0x0601
+#define PCI_DEVICE_ID_NUMASCALE_NUMACHIP1 0x0602
+
 #define PCI_VENDOR_ID_TEKRAM		0x1de1
 #define PCI_DEVICE_ID_TEKRAM_DC290	0xdc29
 
-- 
1.7.5.4

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