linux-kernel - [PATCH] PCI: avoid boot interrupt quirk for AMD 813x B1 devices

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Message-ID: <4AB76CC4.4070802@redhat.com>
Date:	Mon, 21 Sep 2009 14:08:36 +0200
From:	Stefan Assmann <sassmann@...hat.com>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
CC:	Bjorn Helgaas <bjorn.helgaas@...com>, g.giorgetti@...msystem.com,
	Olaf Dabrunz <Olaf.Dabrunz@....net>
Subject: [PATCH] PCI: avoid boot interrupt quirk for AMD 813x B1 devices

From: Stefan Assmann <sassmann@...hat.com>

AMD 813x rev. B1 (like rev. B2) devices generate no interrupts if
quirk_disable_amd_813x_boot_interrupt is executed, add an exception.
http://bugzilla.kernel.org/show_bug.cgi?id=14159

Patch also adds missing cases for DECLARE_PCI_FIXUP_RESUME and
DECLARE_PCI_FIXUP_FINAL calls to quirk_disable_amd_813x_boot_interrupt.

Signed-off-by: Stefan Assmann <sassmann@...hat.com>
Tested-by: Gabriele Giorgetti <g.giorgetti@...msystem.com>
---
 drivers/pci/quirks.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 06b9656..7d809b8 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1661,6 +1661,7 @@ DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS,   PCI_DEVICE_ID_SERVERWORKS_
  */
 #define AMD_813X_MISC			0x40
 #define AMD_813X_NOIOAMODE		(1<<0)
+#define AMD_813X_REV_B1			0x12
 #define AMD_813X_REV_B2			0x13

 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
@@ -1669,7 +1670,8 @@ static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)

 	if (noioapicquirk)
 		return;
-	if (dev->revision == AMD_813X_REV_B2)
+	if ((dev->revision == AMD_813X_REV_B1) ||
+	    (dev->revision == AMD_813X_REV_B2))
 		return;

 	pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
@@ -1679,8 +1681,10 @@ static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
 	printk(KERN_INFO "disabled boot interrupts on PCI device "
 			"0x%04x:0x%04x\n", dev->vendor, dev->device);
 }
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,   PCI_DEVICE_ID_AMD_8131_BRIDGE, 	quirk_disable_amd_813x_boot_interrupt);
-DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD,   PCI_DEVICE_ID_AMD_8132_BRIDGE, 	quirk_disable_amd_813x_boot_interrupt);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8131_BRIDGE,	quirk_disable_amd_813x_boot_interrupt);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8131_BRIDGE,	quirk_disable_amd_813x_boot_interrupt);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8132_BRIDGE,	quirk_disable_amd_813x_boot_interrupt);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8132_BRIDGE,	quirk_disable_amd_813x_boot_interrupt);

 #define AMD_8111_PCI_IRQ_ROUTING	0x56


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