ACPICA: Add structure definitions for RISC-V RHCT

ACPICA commit 82afd0434e79f74b96a6be88115ddc8343a1ba40

RISC-V Hart Capabilities Table (RHCT) is a new static table.
The ECR to add RHCT is approved by the UEFI forum and will be
available in the next version of the ACPI spec.

Link: https://github.com/acpica/acpica/commit/82afd043
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index 9af17cb..db292f3 100644 (file)
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -48,6 +48,7 @@
 #define ACPI_SIG_PRMT           "PRMT" /* Platform Runtime Mechanism Table */
 #define ACPI_SIG_RASF           "RASF" /* RAS Feature table */
 #define ACPI_SIG_RGRT           "RGRT" /* Regulatory Graphics Resource Table */
+#define ACPI_SIG_RHCT           "RHCT" /* RISC-V Hart Capabilities Table */
 #define ACPI_SIG_SBST           "SBST" /* Smart Battery Specification Table */
 #define ACPI_SIG_SDEI           "SDEI" /* Software Delegated Exception Interface Table */
 #define ACPI_SIG_SDEV           "SDEV" /* Secure Devices table */
@@ -2722,6 +2723,53 @@ enum acpi_rgrt_image_type {
 
 /*******************************************************************************
  *
+ * RHCT - RISC-V Hart Capabilities Table
+ *        Version 1
+ *
+ ******************************************************************************/
+
+struct acpi_table_rhct {
+       struct acpi_table_header header;        /* Common ACPI table header */
+       u32 reserved;
+       u64 time_base_freq;
+       u32 node_count;
+       u32 node_offset;
+};
+
+/*
+ * RHCT subtables
+ */
+struct acpi_rhct_node_header {
+       u16 type;
+       u16 length;
+       u16 revision;
+};
+
+/* Values for RHCT subtable Type above */
+
+enum acpi_rhct_node_type {
+       ACPI_RHCT_NODE_TYPE_ISA_STRING = 0x0000,
+       ACPI_RHCT_NODE_TYPE_HART_INFO = 0xFFFF,
+};
+
+/*
+ * RHCT node specific subtables
+ */
+
+/* ISA string node structure */
+struct acpi_rhct_isa_string {
+       u16 isa_length;
+       char isa[];
+};
+
+/* Hart Info node structure */
+struct acpi_rhct_hart_info {
+       u16 num_offsets;
+       u32 uid;                /* ACPI processor UID */
+};
+
+/*******************************************************************************
+ *
  * SBST - Smart Battery Specification Table
  *        Version 1
  *