ACPICA: Tables: Cleanup to reduce FACS globals

ACPICA commit 3f42ba76e2a0453976d3108296d5f656fdf2bd6e

In this patch, FACS table mapping is also tuned a bit so that only the
selected FACS table will be mapped by the OSPM (mapped on demand) and the
FACS related global variables can be reduced. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/3f42ba76
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>

drivers/acpi/acpica/acglobal.h

@@ -64,8 +64,6 @@ ACPI_INIT_GLOBAL(u32, acpi_gbl_xfacs_index, ACPI_INVALID_TABLE_INDEX);
 
 #if (!ACPI_REDUCED_HARDWARE)
 ACPI_GLOBAL(struct acpi_table_facs *, acpi_gbl_FACS);
-ACPI_GLOBAL(struct acpi_table_facs *, acpi_gbl_facs32);
-ACPI_GLOBAL(struct acpi_table_facs *, acpi_gbl_facs64);
 
 #endif				/* !ACPI_REDUCED_HARDWARE */
 

drivers/acpi/acpica/hwxfsleep.c

@@ -160,19 +160,8 @@ acpi_set_firmware_waking_vectors(acpi_physical_address physical_address,
 
 	ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vectors);
 
-	/* If Hardware Reduced flag is set, there is no FACS */
-
-	if (acpi_gbl_reduced_hardware) {
-		return_ACPI_STATUS (AE_OK);
-	}
-
-	if (acpi_gbl_facs32) {
-		(void)acpi_hw_set_firmware_waking_vectors(acpi_gbl_facs32,
-							  physical_address,
-							  physical_address64);
-	}
-	if (acpi_gbl_facs64) {
-		(void)acpi_hw_set_firmware_waking_vectors(acpi_gbl_facs64,
+	if (acpi_gbl_FACS) {
+		(void)acpi_hw_set_firmware_waking_vectors(acpi_gbl_FACS,
 							  physical_address,
 							  physical_address64);
 	}

drivers/acpi/acpica/tbutils.c

@@ -68,6 +68,7 @@ acpi_tb_get_root_table_entry(u8 *table_entry, u32 table_entry_size);
 
 acpi_status acpi_tb_initialize_facs(void)
 {
+	struct acpi_table_facs *facs;
 
 	/* If Hardware Reduced flag is set, there is no FACS */
 
@@ -80,14 +81,14 @@ acpi_status acpi_tb_initialize_facs(void)
 		(void)acpi_get_table_by_index(acpi_gbl_xfacs_index,
 					      ACPI_CAST_INDIRECT_PTR(struct
 								     acpi_table_header,
-								     &acpi_gbl_facs32));
-		acpi_gbl_FACS = acpi_gbl_facs32;
+								     &facs));
+		acpi_gbl_FACS = facs;
 	} else if (acpi_gbl_FADT.facs) {
 		(void)acpi_get_table_by_index(acpi_gbl_facs_index,
 					      ACPI_CAST_INDIRECT_PTR(struct
 								     acpi_table_header,
-								     &acpi_gbl_facs64));
-		acpi_gbl_FACS = acpi_gbl_facs64;
+								     &facs));
+		acpi_gbl_FACS = facs;
 	}
 
 	/* If there is no FACS, just continue. There was already an error msg */