From: Robin Murphy <robin.murphy@xxxxxxx>
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@xxxxxxx>
Signed-off-by: Erik Schmauss <erik.schmauss@xxxxxxxxx>
---
include/acpi/actbl2.h | 15 ++++++++++-----
1 file 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)
/*******************************************************************************
--
2.14.3
--
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