ACPICA: ACPI 6.1: Support for new PCCT subtable

ACPICA commit de3ea7c322b9b6bdb09aa90c2e1d420cd4dce47c

Additional subspace structure was added.

Link: https://github.com/acpica/acpica/commit/de3ea7c3
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 22 insertions, 1 deletions

diff --git a/include/acpi/actbl3.h b/include/acpi/actbl3.h
index f12f4bb1907b..ebc1f4f9fe66 100644
--- a/include/acpi/actbl3.h
+++ b/include/acpi/actbl3.h
@@ -481,7 +481,8 @@ struct acpi_table_pcct {
 enum acpi_pcct_type {
         ACPI_PCCT_TYPE_GENERIC_SUBSPACE = 0,
         ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE = 1,
-        ACPI_PCCT_TYPE_RESERVED = 2     /* 2 and greater are reserved */
+        ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE_TYPE2 = 2,   /* ACPI 6.1 */
+        ACPI_PCCT_TYPE_RESERVED = 3     /* 3 and greater are reserved */
 };
 
 /*
@@ -520,6 +521,26 @@ struct acpi_pcct_hw_reduced {
         u16 min_turnaround_time;
 };
 
+/* 2: HW-reduced Communications Subspace Type 2 (ACPI 6.1) */
+
+struct acpi_pcct_hw_reduced_type2 {
+        struct acpi_subtable_header header;
+        u32 doorbell_interrupt;
+        u8 flags;
+        u8 reserved;
+        u64 base_address;
+        u64 length;
+        struct acpi_generic_address doorbell_register;
+        u64 preserve_mask;
+        u64 write_mask;
+        u32 latency;
+        u32 max_access_rate;
+        u16 min_turnaround_time;
+        struct acpi_generic_address doorbell_ack_register;
+        u64 ack_preserve_mask;
+        u64 ack_write_mask;
+};
+
 /* Values for doorbell flags above */
 
 #define ACPI_PCCT_INTERRUPT_POLARITY    (1)