acpi_os_map_generic_address
if (!acpi_os_map_generic_address(reg))
acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1a_event_block);
acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1b_event_block);
(unsigned long)acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe0_block);
(unsigned long)acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe1_block);
rv = acpi_os_map_generic_address(&acpi_gbl_FADT.reset_register);
EXPORT_SYMBOL(acpi_os_map_generic_address);
void __iomem *acpi_os_map_generic_address(struct acpi_generic_address *addr);