linux-kernel - [PATCH 11/12] SFI, PCI: Hook MMCONFIG

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Message-id: <24fe646fcbbd9049850de4ac57cf6a67846b38c4.1247025117.git.len.brown@intel.com>
Date:	Wed, 08 Jul 2009 00:13:57 -0400
From:	Len Brown <lenb@...nel.org>
To:	x86@...nel.org, sfi-devel@...plefirmware.org,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Cc:	Feng Tang <feng.tang@...el.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Len Brown <len.brown@...el.com>
Subject: [PATCH 11/12] SFI, PCI: Hook MMCONFIG

From: Feng Tang <feng.tang@...el.com>

First check ACPI, and if that fails, ask SFI to find the MCFG.

Cc: Jesse Barnes <jbarnes@...tuousgeek.org>
Signed-off-by: Feng Tang <feng.tang@...el.com>
Signed-off-by: Len Brown <len.brown@...el.com>
---
 arch/x86/Kconfig               |    2 +-
 arch/x86/pci/mmconfig-shared.c |    5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8e864c0..8e20a0e 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1880,7 +1880,7 @@ config PCI_DIRECT
 
 config PCI_MMCONFIG
 	def_bool y
-	depends on X86_32 && PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY)
+	depends on X86_32 && PCI && (ACPI || SFI) && (PCI_GOMMCONFIG || PCI_GOANY)
 
 config PCI_OLPC
 	def_bool y
diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index 712443e..373780b 100644
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -13,6 +13,7 @@
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/acpi.h>
+#include <linux/sfi_acpi.h>
 #include <linux/bitmap.h>
 #include <linux/sort.h>
 #include <asm/e820.h>
@@ -606,7 +607,9 @@ static void __init __pci_mmcfg_init(int early)
 	}
 
 	if (!known_bridge)
-		acpi_table_parse(ACPI_SIG_MCFG, pci_parse_mcfg);
+		if (acpi_table_parse(ACPI_SIG_MCFG, pci_parse_mcfg))
+			sfi_acpi_table_parse(ACPI_SIG_MCFG, NULL, NULL, 0,
+				pci_parse_mcfg);
 
 	pci_mmcfg_reject_broken(early);
 
-- 
1.6.0.6

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