Preparatory patch so the shared mmconfig code can access static functions
in the 32/64bit specific mmconfig implementations.
This is useful for the upcoming implementation of mmconfig based (ECAM) PCI
configuration space access for both the legacy part (0-0xff) and the
extended part (0x100-0xfff). Being able to access the low level mmconfig
read/write functions directly avoids extra indirections.
Signed-off-by: Thomas Gleixner <t...@linutronix.de>
---
arch/x86/pci/Makefile | 2 +-
arch/x86/pci/mmconfig-shared.c | 6 ++++++
arch/x86/pci/mmconfig_32.c | 12 ++----------
arch/x86/pci/mmconfig_64.c | 16 ++++------------
4 files changed, 13 insertions(+), 23 deletions(-)
--- a/arch/x86/pci/Makefile
+++ b/arch/x86/pci/Makefile
@@ -1,7 +1,7 @@
obj-y := i386.o init.o
obj-$(CONFIG_PCI_BIOS) += pcbios.o
-obj-$(CONFIG_PCI_MMCONFIG) += mmconfig_$(BITS).o direct.o mmconfig-shared.o
+obj-$(CONFIG_PCI_MMCONFIG) += direct.o mmconfig-shared.o
obj-$(CONFIG_PCI_DIRECT) += direct.o
obj-$(CONFIG_PCI_OLPC) += olpc.o
obj-$(CONFIG_PCI_XEN) += xen.o
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -24,6 +24,12 @@
#define PREFIX "PCI: "
+#ifdef CONFIG_X86_64
+# include "mmconfig_64.c"
+#else
+# include "mmconfig_32.c"
+#endif
+
/* Indicate if the mmcfg resources have been placed into the resource table. */
static bool pci_mmcfg_running_state;
static bool pci_mmcfg_arch_init_failed;
--- a/arch/x86/pci/mmconfig_32.c
+++ b/arch/x86/pci/mmconfig_32.c
@@ -3,18 +3,10 @@
* Copyright (C) 2004 Intel Corp.
*
* This code is released under the GNU General Public License version 2.
+ *
+ * Low-level direct PCI config space access via MMCONFIG, 32bit version.
*/
-/*
- * mmconfig.c - Low-level direct PCI config space access via MMCONFIG
- */
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/rcupdate.h>
-#include <asm/e820.h>
-#include <asm/pci_x86.h>
-
/* Assume systems with more busses have correct MCFG */
#define mmcfg_virt_addr ((void __iomem *) fix_to_virt(FIX_PCIE_MCFG))
--- a/arch/x86/pci/mmconfig_64.c
+++ b/arch/x86/pci/mmconfig_64.c
@@ -1,20 +1,12 @@
/*
- * mmconfig.c - Low-level direct PCI config space access via MMCONFIG
+ * Low-level direct PCI config space access via MMCONFIG
*
* This is an 64bit optimized version that always keeps the full mmconfig
* space mapped. This allows lockless config space operation.
+ *
+ * This file is included into the 32/64bit shared code so the read/write
+ * accessors are directly reachable there.
*/
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/bitmap.h>
-#include <linux/rcupdate.h>
-#include <asm/e820.h>
-#include <asm/pci_x86.h>
-
-#define PREFIX "PCI: "
-
static char __iomem *pci_dev_base(unsigned int seg, unsigned int bus, unsigned
int devfn)
{
struct pci_mmcfg_region *cfg = pci_mmconfig_lookup(seg, bus);
