x86/PCI: MMCONFIG: use a private structure rather than the ACPI MCFG one

This adds a struct pci_mmcfg_region with a little more information
than the struct acpi_mcfg_allocation used previously.  The acpi_mcfg
structure is defined by the spec, so we can't change it.

To begin with, struct pci_mmcfg_region is basically the same as the
ACPI MCFG version, but future patches will add more information.

Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 8 insertions, 1 deletions

diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h
index 7d94a235ec82..3a2ca5f69521 100644
--- a/arch/x86/include/asm/pci_x86.h
+++ b/arch/x86/include/asm/pci_x86.h
@@ -118,10 +118,17 @@ extern int __init pcibios_init(void);
 
 /* pci-mmconfig.c */
 
+struct pci_mmcfg_region {
+        u64 address;
+        u16 pci_segment;
+        u8 start_bus_number;
+        u8 end_bus_number;
+};
+
 extern int __init pci_mmcfg_arch_init(void);
 extern void __init pci_mmcfg_arch_free(void);
 
-extern struct acpi_mcfg_allocation *pci_mmcfg_config;
+extern struct pci_mmcfg_region *pci_mmcfg_config;
 extern int pci_mmcfg_config_num;
 
 #define PCI_MMCFG_BUS_OFFSET(bus)      ((bus) << 20)