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-rw-r--r--include/acpi/actbl3.h23
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)