ACPICA: Tables: Allow FADT to be customized with virtual address

ACPICA commit d98de9ca14891130efc5dcdc871b97eb27b4b0f5

FADT parsing code requires FADT to be installed as
ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL, using new
acpi_tb_get_table()/acpi_tb_put_table(), other address types can also be allowed,
thus facilitates FADT customization with virtual address. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/d98de9ca
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index 5fb838e..81473a4 100644 (file)
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -311,6 +311,8 @@ void acpi_tb_parse_fadt(void)
 {
        u32 length;
        struct acpi_table_header *table;
+       struct acpi_table_desc *fadt_desc;
+       acpi_status status;
 
        /*
         * The FADT has multiple versions with different lengths,
@@ -319,14 +321,12 @@ void acpi_tb_parse_fadt(void)
         * Get a local copy of the FADT and convert it to a common format
         * Map entire FADT, assumed to be smaller than one page.
         */
-       length = acpi_gbl_root_table_list.tables[acpi_gbl_fadt_index].length;
-
-       table =
-           acpi_os_map_memory(acpi_gbl_root_table_list.
-                              tables[acpi_gbl_fadt_index].address, length);
-       if (!table) {
+       fadt_desc = &acpi_gbl_root_table_list.tables[acpi_gbl_fadt_index];
+       status = acpi_tb_get_table(fadt_desc, &table);
+       if (ACPI_FAILURE(status)) {
                return;
        }
+       length = fadt_desc->length;
 
        /*
         * Validate the FADT checksum before we copy the table. Ignore
@@ -340,7 +340,7 @@ void acpi_tb_parse_fadt(void)
 
        /* All done with the real FADT, unmap it */
 
-       acpi_os_unmap_memory(table, length);
+       acpi_tb_put_table(fadt_desc);
 
        /* Obtain the DSDT and FACS tables via their addresses within the FADT */