From: Bob Moore <robert.mo...@intel.com>
One new subtable.
Signed-off-by: Bob Moore <robert.mo...@intel.com>
Signed-off-by: Lv Zheng <lv.zh...@intel.com>
---
include/acpi/actbl3.h | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/include/acpi/actbl3.h b/include/acpi/actbl3.h
index 41ad964..787bcc8 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)
*/
--
1.7.10
--
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