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; Thu, 27 Feb 2025 22:48:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740696523; cv=none; b=YXRtTleZvCX5VshOnBmYZsbT+0nLKKMr5qzL5k/MlBDw6W/LksgY6OXCHgJT7dSmM+Mq3SjGiREO8Y+xblcQezJRbV0m8154UFwRaX65O67HOkh5FjKw/wT49sp7mdetXXV+8YEybVst3fCJEcORJGvaNpYrr9fg5YaLf5WvYmk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740696523; c=relaxed/simple; bh=FIMs4VAiybrc8QrSGXhSrl0CkOILDLgkNgxLuSmq4Yk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JYXzHRUfhjikCtlNL4cmFrWihAY7GgBvtFtUxUTIMzvlG+3ZurvdlGlAoz+Rxx43e2R13+3kOl/Od7ywab9PguGolCTa6ERBJ/FP9JDYWwnB1pBlF80WfzdApMTl5QKuC3wi3kkubtxELHwyU2K6NZYNWHXqoWNK1VK0qd794U0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=PLG5yFrt; arc=none smtp.client-ip=198.175.65.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="PLG5yFrt" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1740696522; x=1772232522; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=FIMs4VAiybrc8QrSGXhSrl0CkOILDLgkNgxLuSmq4Yk=; b=PLG5yFrtKedevXVHDe2199A//yBTB8iZxzgzmNh7EUUu8ZeXg5OwUa8z 2k5d6o+qqpQfJs6220LoZkQxhwT39LRRbUOUxtzOOtpjZhunI3kJ6E26l GCEWNci1+bOKx1LBb/OQ5ajMZ9OpKiI/tfgnb0E/DW1Y1/fOsavn7kIf0 ZOvQD4PTgGg18EeFKG4CL8GAQkQjKalYEUcj/zcnmFwQdkkTvtUkYek+2 LVGW8soS1DIpflAsWajHkkt/IcFY9JawM6q/4+5uRhas9M1tJMnZuV9cT AAFf1MyXLtxQ1OsEupyKVIq6VQzFa12c+nvhcQAoV9EuO1SGSFf5qpuME w==; X-CSE-ConnectionGUID: +GwKNAQXRdac/k9Xs2SiAA== X-CSE-MsgGUID: 0pzID/GJRG2ukyv6VExsgg== X-IronPort-AV: E=McAfee;i="6700,10204,11358"; 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.