ACPICA: IORT: Update for revision D

IORT revision D contains a few additions and fixes to
currently-supported tables:

- SMMUv3 proximity domain field is enlarged to 4 bytes for consistency
  with SRAT
- Root complex nodes gain an address size limit field equivalent to that
  of named components
- Named component nodes gain a way to describe PASID (substream_ID)
  support, encoded in their flags

Additionally, we fix a couple of outstanding points in passing:
- Add the stall support flag for named components defined in revision C
- Fix SMMUv3 HTTU override mask, which should always have been 2 bits

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 10 insertions, 5 deletions

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index 876012da8e6e..46dbc1018b2d 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -67,7 +67,7 @@
  * IORT - IO Remapping Table
  *
  * Conforms to "IO Remapping Table System Software on ARM Platforms",
- * Document number: ARM DEN 0049C, May 2017
+ * Document number: ARM DEN 0049D, March 2018
  *
  ******************************************************************************/
 
@@ -152,10 +152,17 @@ struct acpi_iort_named_component {
         char device_name[1];    /* Path of namespace object */
 };
 
+/* Masks for Flags field above */
+
+#define ACPI_IORT_NC_STALL_SUPPORTED    (1)
+#define ACPI_IORT_NC_PASID_BITS         (31<<1)
+
 struct acpi_iort_root_complex {
         u64 memory_properties;  /* Memory access properties */
         u32 ats_attribute;
         u32 pci_segment_number;
+        u8 memory_address_limit;        /* Memory address size limit */
+        u8 reserved[3];         /* Reserved, must be zero */
 };
 
 /* Values for ats_attribute field above */
@@ -209,9 +216,7 @@ struct acpi_iort_smmu_v3 {
         u32 pri_gsiv;
         u32 gerr_gsiv;
         u32 sync_gsiv;
-        u8 pxm;
-        u8 reserved1;
-        u16 reserved2;
+        u32 pxm;
         u32 id_mapping_index;
 };
 
@@ -224,7 +229,7 @@ struct acpi_iort_smmu_v3 {
 /* Masks for Flags field above */
 
 #define ACPI_IORT_SMMU_V3_COHACC_OVERRIDE   (1)
-#define ACPI_IORT_SMMU_V3_HTTU_OVERRIDE     (1<<1)
+#define ACPI_IORT_SMMU_V3_HTTU_OVERRIDE     (3<<1)
 #define ACPI_IORT_SMMU_V3_PXM_VALID         (1<<3)
 
 /*******************************************************************************