ACPICA: ACPI 5.1: Update for PCCT table changes.

One new subtable.

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, 24 insertions, 1 deletions

diff --git a/include/acpi/actbl3.h b/include/acpi/actbl3.h
index 41ad9648ca52..787bcc814463 100644
--- a/include/acpi/actbl3.h
+++ b/include/acpi/actbl3.h
@@ -448,7 +448,8 @@ struct acpi_table_pcct {
 
 enum acpi_pcct_type {
         ACPI_PCCT_TYPE_GENERIC_SUBSPACE = 0,
-        ACPI_PCCT_TYPE_RESERVED = 1     /* 1 and greater are reserved */
+        ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE = 1,
+        ACPI_PCCT_TYPE_RESERVED = 2     /* 2 and greater are reserved */
 };
 
 /*
@@ -470,6 +471,28 @@ struct acpi_pcct_subspace {
         u16 min_turnaround_time;
 };
 
+/* 1: HW-reduced Communications Subspace (ACPI 5.1) */
+
+struct acpi_pcct_hw_reduced {
+        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;
+};
+
+/* Values for doorbell flags above */
+
+#define ACPI_PCCT_INTERRUPT_POLARITY    (1)
+#define ACPI_PCCT_INTERRUPT_MODE        (1<<1)
+
 /*
  * PCC memory structures (not part of the ACPI table)
  */