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Wysocki" , Len Brown Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, patches@lists.linux.dev, Tony Luck Subject: [PATCH v2 1/4] ACPICA: Define MRRM ACPI table Date: Thu, 27 Feb 2025 14:48:25 -0800 Message-ID: <20250227224828.306537-2-tony.luck@intel.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250227224828.306537-1-tony.luck@intel.com> References: <20250227224828.306537-1-tony.luck@intel.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Patch for reference, this has already been applied to https://github.com/acpica/acpica and will in due course make its way into Linux when the next ACPICA release is ported over. Signed-off-by: Tony Luck --- include/acpi/actbl1.h | 7 +++++++ include/acpi/actbl2.h | 42 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 49 insertions(+) diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h index 387fc821703a..07cb62541884 100644 --- a/include/acpi/actbl1.h +++ b/include/acpi/actbl1.h @@ -110,6 +110,13 @@ struct acpi_whea_header { u64 mask; /* Bitmask required for this register instruction */ }; +/* Larger subtable header (when Length can exceed 255) */ + +struct acpi_subtable_header_16 { + u16 type; + u16 length; +}; + /* https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/acpitabl/ns-acpitabl-aspt_table */ #define ASPT_REVISION_ID 0x01 struct acpi_table_aspt { diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h index 2e917a8f8bca..662a1bc927ea 100644 --- a/include/acpi/actbl2.h +++ b/include/acpi/actbl2.h @@ -37,6 +37,7 @@ #define ACPI_SIG_MCHI "MCHI" /* Management Controller Host Interface table */ #define ACPI_SIG_MPAM "MPAM" /* Memory System Resource Partitioning and Monitoring Table */ #define ACPI_SIG_MPST "MPST" /* Memory Power State Table */ +#define ACPI_SIG_MRRM "MRRM" /* Memory Range and Region Mapping table */ #define ACPI_SIG_MSDM "MSDM" /* Microsoft Data Management Table */ #define ACPI_SIG_NFIT "NFIT" /* NVDIMM Firmware Interface Table */ #define ACPI_SIG_NHLT "NHLT" /* Non HD Audio Link Table */ @@ -1736,6 +1737,47 @@ struct acpi_msct_proximity { u64 memory_capacity; /* In bytes */ }; +/******************************************************************************* + * + * MRRM - Memory Range and Region Mapping (MRRM) table + * Conforms to "Intel Resource Director Technology Architecture Specification" + * Version 1.1, January 2025 + * + ******************************************************************************/ + +struct acpi_table_mrrm { + struct acpi_table_header header; /* Common ACPI table header */ + u8 max_mem_region; /* Max Memory Regions supported */ + u8 flags; /* Region assignment type */ + u8 reserved[26]; + u8 memory_range_entry[]; +}; + +/* Flags */ +#define ACPI_MRRM_FLAGS_REGION_ASSIGNMENT_OS (1<<0) + +/******************************************************************************* + * + * Memory Range entry - Memory Range entry in MRRM table + * + ******************************************************************************/ + +struct acpi_mrrm_mem_range_entry { + struct acpi_subtable_header_16 header; + u32 reserved0; /* Reserved */ + u64 addr_base; /* Base addr of the mem range */ + u64 addr_len; /* Length of the mem range */ + u16 region_id_flags; /* Valid local or remote Region-ID */ + u8 local_region_id; /* Platform-assigned static local Region-ID */ + u8 remote_region_id; /* Platform-assigned static remote Region-ID */ + u32 reserved1; /* Reserved */ + /* Region-ID Programming Registers[] */ +}; + +/* Values for region_id_flags above */ +#define ACPI_MRRM_VALID_REGION_ID_FLAGS_LOCAL (1<<0) +#define ACPI_MRRM_VALID_REGION_ID_FLAGS_REMOTE (1<<1) + /******************************************************************************* * * MSDM - Microsoft Data Management table From patchwork Thu Feb 27 22:48:27 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Luck X-Patchwork-Id: 868988 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E6F5623E339; 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a="64077567" X-IronPort-AV: E=Sophos;i="6.13,320,1732608000"; d="scan'208";a="64077567" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Feb 2025 14:48:39 -0800 X-CSE-ConnectionGUID: 6LcY9jrsR2+ZW8ferErEPg== X-CSE-MsgGUID: doWqpQjJRhSO4HnPgdFhJQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,320,1732608000"; d="scan'208";a="117187053" Received: from agluck-desk3.sc.intel.com ([172.25.222.70]) by orviesa006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Feb 2025 14:48:39 -0800 From: Tony Luck To: "Rafael J. Wysocki" , Len Brown Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, patches@lists.linux.dev, Tony Luck Subject: [PATCH v2 3/4] ACPI: Add documentation for exposing MRRM data Date: Thu, 27 Feb 2025 14:48:27 -0800 Message-ID: <20250227224828.306537-4-tony.luck@intel.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250227224828.306537-1-tony.luck@intel.com> References: <20250227224828.306537-1-tony.luck@intel.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Initial implementation provides enumeration of the address ranges and BIOS assigned region IDs for each range. Signed-off-by: Tony Luck --- Documentation/ABI/testing/sysfs-firmware-acpi | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi index 5249ad5a96d9..a3369cf95546 100644 --- a/Documentation/ABI/testing/sysfs-firmware-acpi +++ b/Documentation/ABI/testing/sysfs-firmware-acpi @@ -248,3 +248,19 @@ Description: # cat ff_pwr_btn 7 enabled +What: /sys/firmware/acpi/memory_ranges/rangeX +Date: February 2025 +Contact: Tony Luck +Description: + On systems with the ACPI MRRM table reports the + parameters for each range. + + base: Starting system physical address. + + length: Length of this range in bytes. + + local_region_id: ID associated with access by agents + local to this range of addresses. + + remote_region_id: ID associated with access by agents + non-local to this range of addresses.