[PATCH V4 03/23] ACPICA: Add structure definitions for RISC-V RHCT

Sunil V L
2023-04-04T18:21:29Z

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
Reference: Mantis: 2349
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
---
include/acpi/actbl2.h | 48 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index c432fd15db65..86bb79fdfa62 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -47,6 +47,7 @@
#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 */
@@ -2604,6 +2605,53 @@ enum acpi_rgrt_image_type {
ACPI_RGRT_TYPE_RESERVED = 2 /* 2 and greater are reserved */
};

+/*******************************************************************************
+ *
+ * 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
--
2.34.1