From patchwork Thu Jun 16 09:01:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep Holla X-Patchwork-Id: 12883608 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A3558C43334 for ; Thu, 16 Jun 2022 09:01:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231805AbiFPJBV (ORCPT ); Thu, 16 Jun 2022 05:01:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56584 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231732AbiFPJBT (ORCPT ); Thu, 16 Jun 2022 05:01:19 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 780E92D1E0 for ; Thu, 16 Jun 2022 02:01:18 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 60E3712FC; Thu, 16 Jun 2022 02:01:18 -0700 (PDT) Received: from usa.arm.com (e103737-lin.cambridge.arm.com [10.1.197.49]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 3B9D03F7F5; Thu, 16 Jun 2022 02:01:17 -0700 (PDT) From: Sudeep Holla To: linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Sudeep Holla , "Rafael J . Wysocki" , Lorenzo Pieralisi , Catalin Marinas , Will Deacon Subject: [PATCH 0/3] ACPI: Implement FFH OpRegion support Date: Thu, 16 Jun 2022 10:01:03 +0100 Message-Id: <20220616090106.2154906-1-sudeep.holla@arm.com> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Hi, This short series adds supports for ACPI Fixed Function Hardware(FFH) based Opregion that is being added(via Code First approach[1]) to ACPI v6.5 The first patch added ACPICA support for the same and must be routed via ACPICA project into the kernel and is part of the series just for the reference. The pull request is already sent there[2]. The second patch added a generic FFH OpRegion handler. Since handling of FFH OpRegion is very platform and the generic handlers just call the platform/ architecture specific callbacks for all the work. The last patch added the ARM64 specific callback which handles FFH OpRegion using arch specific SMC/HVC instructions using SMCCC. The specification can be found at [3]. [1] https://bugzilla.tianocore.org/show_bug.cgi?id=3598 [2] https://github.com/acpica/acpica/pull/782 [3] https://developer.arm.com/docs/den0048/latest Cc: Catalin Marinas Cc: Will Deacon Sudeep Holla (3): ACPICA: Add support for FFH Opregion special context data ACPI: Implement a generic FFH Opregion handler arm64: Add architecture specific ACPI FFH Opregion callbacks arch/arm64/kernel/acpi.c | 104 +++++++++++++++++++++++++++++++++ drivers/acpi/Kconfig | 10 ++++ drivers/acpi/Makefile | 1 + drivers/acpi/acpi_ffh.c | 55 +++++++++++++++++ drivers/acpi/acpica/evregion.c | 8 +++ drivers/acpi/acpica/exfield.c | 8 ++- drivers/acpi/acpica/exserial.c | 6 ++ drivers/acpi/bus.c | 6 ++ include/acpi/acconfig.h | 2 + include/acpi/actypes.h | 7 +++ include/linux/acpi.h | 7 +++ 11 files changed, 212 insertions(+), 2 deletions(-) create mode 100644 drivers/acpi/acpi_ffh.c --- 2.36.1