[PATCH] PCI: add proper MCFG table parsing to ACPI core.

This patch is the first step in properly handling the MCFG PCI table.
It defines the structures properly, and saves off the table so that the
pci mmconfig code can access it.  It moves the parsing of the table a
little later in the boot process, but still before the information is
needed.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 13 insertions, 3 deletions

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index f5bc298707e1..ef8483673aa3 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -342,11 +342,19 @@ struct acpi_table_ecdt {
 
 /* PCI MMCONFIG */
 
+/* Defined in PCI Firmware Specification 3.0 */
+struct acpi_table_mcfg_config {
+        u32                             base_address;
+        u32                             base_reserved;
+        u16                             pci_segment_group_number;
+        u8                              start_bus_number;
+        u8                              end_bus_number;
+        u8                              reserved[4];
+} __attribute__ ((packed));
 struct acpi_table_mcfg {
         struct acpi_table_header        header;
         u8                              reserved[8];
-        u32                             base_address;
-        u32                             base_reserved;
+        struct acpi_table_mcfg_config   config[0];
 } __attribute__ ((packed));
 
 /* Table Handlers */
@@ -391,6 +399,7 @@ int acpi_table_parse (enum acpi_table_id id, acpi_table_handler handler);
 int acpi_get_table_header_early (enum acpi_table_id id, struct acpi_table_header **header);
 int acpi_table_parse_madt (enum acpi_madt_entry_id id, acpi_madt_entry_handler handler, unsigned int max_entries);
 int acpi_table_parse_srat (enum acpi_srat_entry_id id, acpi_madt_entry_handler handler, unsigned int max_entries);
+int acpi_parse_mcfg (unsigned long phys_addr, unsigned long size);
 void acpi_table_print (struct acpi_table_header *header, unsigned long phys_addr);
 void acpi_table_print_madt_entry (acpi_table_entry_header *madt);
 void acpi_table_print_srat_entry (acpi_table_entry_header *srat);
@@ -412,7 +421,8 @@ int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
 
 extern int acpi_mp_config;
 
-extern u32 pci_mmcfg_base_addr;
+extern struct acpi_table_mcfg_config *pci_mmcfg_config;
+extern int pci_mmcfg_config_num;
 
 extern int sbf_port ;