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Tue, 04 Apr 2023 11:21:07 -0700 (PDT) Received: from localhost.localdomain ([106.51.184.50]) by smtp.gmail.com with ESMTPSA id o12-20020a056a001bcc00b0062dcf5c01f9sm9018524pfw.36.2023.04.04.11.21.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Apr 2023 11:21:07 -0700 (PDT) From: Sunil V L To: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-acpi@vger.kernel.org, linux-crypto@vger.kernel.org, platform-driver-x86@vger.kernel.org, llvm@lists.linux.dev Subject: [PATCH V4 03/23] ACPICA: Add structure definitions for RISC-V RHCT Date: Tue, 4 Apr 2023 23:50:17 +0530 Message-Id: <20230404182037.863533-4-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230404182037.863533-1-sunilvl@ventanamicro.com> References: <20230404182037.863533-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230404_112109_576628_77549A8E X-CRM114-Status: GOOD ( 11.72 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Weili Qian , Albert Ou , Herbert Xu , Tom Rix , Jonathan Corbet , Marc Zyngier , Daniel Lezcano , Nick Desaulniers , Mark Gross , Hans de Goede , Zhou Wang , Palmer Dabbelt , Paul Walmsley , "Rafael J . Wysocki" , Nathan Chancellor , Thomas Gleixner , Maximilian Luz , "David S . Miller" , Len Brown Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org 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 --- 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