1 files changed, 21 insertions, 2 deletions

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index 1b2b356486d1..ef9dae12bd83 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -261,9 +261,28 @@ struct acpi_csrt_group {
         u16 subdevice_id;
         u16 revision;
         u16 reserved;
-        u32 info_length;
+        u32 shared_info_length;
 
-        /* Shared data (length = info_length) immediately follows */
+        /* Shared data immediately follows (Length = shared_info_length) */
+};
+
+/* Shared Info subtable */
+
+struct acpi_csrt_shared_info {
+        u16 major_version;
+        u16 minor_version;
+        u32 mmio_base_low;
+        u32 mmio_base_high;
+        u32 gsi_interrupt;
+        u8 interrupt_polarity;
+        u8 interrupt_mode;
+        u8 num_channels;
+        u8 dma_address_width;
+        u16 base_request_line;
+        u16 num_handshake_signals;
+        u32 max_block_size;
+
+        /* Resource descriptors immediately follow (Length = Group length - shared_info_length) */
 };
 
 /* Resource Descriptor subtable */