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[patch 5/5] x86: Set PCI config space size to extended for AMD Barcelona

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From: Robert Richter <robert.richter@...>
To: Andi Kleen <ak@...>
Cc: <patches@...>, <linux-kernel@...>, Robert Richter <robert.richter@...>
Subject: [patch 5/5] x86: Set PCI config space size to extended for AMD Barcelona
Date: Monday, September 3, 2007 - 4:17 am

This patch sets the config space size for AMD Barcelona PCI devices to
4096.

Signed-off-by: Robert Richter <robert.richter@amd.com>

---
 arch/i386/pci/fixup.c |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

Index: linux-2.6/arch/i386/pci/fixup.c
===================================================================
--- linux-2.6.orig/arch/i386/pci/fixup.c
+++ linux-2.6/arch/i386/pci/fixup.c
@@ -8,6 +8,7 @@
 #include <linux/init.h>
 #include "pci.h"
 
+#define PCI_CFG_SPACE_EXP_SIZE	4096
 
 static void __devinit pci_fixup_i450nx(struct pci_dev *d)
 {
@@ -444,3 +445,16 @@ static void __devinit pci_siemens_interr
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SIEMENS, 0x0015,
 			  pci_siemens_interrupt_controller);
+
+/*
+ * Extend size of PCI configuration space for AMD CPUs
+ */
+static void __devinit pci_ext_cfg_space_access(struct pci_dev *dev)
+{
+	dev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FAM10H_HT,   pci_ext_cfg_space_access);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FAM10H_MAP,  pci_ext_cfg_space_access);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FAM10H_DRAM, pci_ext_cfg_space_access);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FAM10H_MISC, pci_ext_cfg_space_access);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FAM10H_LINK, pci_ext_cfg_space_access);

-- 
AMD Saxony, Dresden, Germany
Operating System Research Center
email: robert.richter@amd.com



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Messages in current thread:
[patch 5/5] x86: Set PCI config space size to extended for A..., Robert Richter, (Mon Sep 3, 4:17 am)
Re: [patch 5/5] x86: Set PCI config space size to extended f..., dean gaudet, (Mon Sep 3, 12:48 pm)
Re: [patch 5/5] x86: Set PCI config space size to extended f..., Martin Mares, (Mon Sep 3, 3:01 pm)
Re: [patch 5/5] x86: Set PCI config space size to extended f..., Robert Richter, (Mon Sep 3, 2:18 pm)