From patchwork Wed Sep 27 16:26:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep Holla X-Patchwork-Id: 13401352 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 55212499A6 for ; Wed, 27 Sep 2023 16:26:44 +0000 (UTC) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E1CCD91; Wed, 27 Sep 2023 09:26:42 -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 CFEF5DA7; Wed, 27 Sep 2023 09:27:20 -0700 (PDT) Received: from e103737-lin.cambridge.arm.com (e103737-lin.cambridge.arm.com [10.1.197.49]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 7C3BD3F59C; Wed, 27 Sep 2023 09:26:41 -0700 (PDT) From: Sudeep Holla Date: Wed, 27 Sep 2023 17:26:10 +0100 Subject: [PATCH v2 1/4] ACPI: PCC: Add PCC shared memory region command and status bitfields Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20230927-pcc_defines-v2-1-0b8ffeaef2e5@arm.com> References: <20230927-pcc_defines-v2-0-0b8ffeaef2e5@arm.com> In-Reply-To: <20230927-pcc_defines-v2-0-0b8ffeaef2e5@arm.com> To: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-acpi@vger.kernel.org Cc: Sudeep Holla , "Rafael J. Wysocki" , Andi Shyti , Jean Delvare , Guenter Roeck , Huisong Li X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1393; i=sudeep.holla@arm.com; h=from:subject:message-id; bh=9gga6E/NnFW9yCBghSYbPIOChbwQimJQ3QU3cLoDpm0=; b=owEBbQKS/ZANAwAIAQBBurwxfuKYAcsmYgBlFFe/Me9jLT2XV71r3uVNlo9aPALmZxxlCrgOw X8MaCVxgRiJAjMEAAEIAB0WIQS6ceUSBvMeskPdk+EAQbq8MX7imAUCZRRXvwAKCRAAQbq8MX7i mCA0EACf+1nskGS7DbkO6Bb+xst1fMMtA6+zGRPIS1A70mWfBaih2si4tLQQW3e8g+W3MZPuHwu z21Frb3/hUz7AUY63gcpZS4RcRAP/SSKDsbko3MC2zY0W0maIg2S+hJ03RJ0Eed3aei3/d1515+ AejrTrWhbrNyiRKfPYljB395pUZ+ggYzvrrfDVj46iF/uq4A6KiBLbw0T+Qy5v+Dnyb8Ex4gWl6 FqfkQc2BakOeQrSyxYwjuQQvnWzr155gSsioREoHQv91Lo2xlOJeA1mFCXKiszxAa5xFkaicTxJ rohZFAAgkEKuAI+fpVG9327S3M6QKzUUKZ2bNtzKJHGUCBrjM0k1odWnjadskRJ+UjdK5HOnBK5 noZZe/jjNNKJKBCeL7FFajsSMDbmgMPnnAcdh27KeRFxTmLhPXw+BY8WmmTjE7Iof5boNynuiRB OSKVg5SfX4sZocpU8KJvIS8S0LKULh3pu5alVJ6P5mEjYdLdiXrlehxdtlFsXyZdxPKfLeNNZin I92/l6ZawK/eQ/qvTt28UeZkA0wkDe/8kiD+wOhOpE42kCAgu8st1EAOyWgXgFIMOjNOigPIg4D X225AnPHli9OB9WtyzAf6dRHkr4PYVZyRgPWrwbwQRuaVlmUs30QSwqlucMPWyXwhbFylFNr3Vh sqf0M2/eP9PZlIQ== X-Developer-Key: i=sudeep.holla@arm.com; a=openpgp; fpr=7360A21742ADF5A11767C1C139CFD4755FE2D5B4 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Define the common macros to use when referring to various bitfields in the PCC generic communications channel command and status fields. Currently different drivers that need to use these bitfields have defined these locally. This common macro is intended to consolidate and replace those. Cc: Rafael J. Wysocki Signed-off-by: Sudeep Holla --- include/acpi/pcc.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/include/acpi/pcc.h b/include/acpi/pcc.h index 73e806fe7ce7..021891a7434f 100644 --- a/include/acpi/pcc.h +++ b/include/acpi/pcc.h @@ -18,7 +18,20 @@ struct pcc_mbox_chan { u16 min_turnaround_time; }; +/* Generic Communications Channel Shared Memory Region */ +#define PCC_SIGNATURE 0x50424300 +/* Generic Communications Channel Command Field */ +#define PCC_CMD_GENERATE_DB_INTR BIT(15) +/* Generic Communications Channel Status Field */ +#define PCC_STATUS_CMD_COMPLETE BIT(0) +#define PCC_STATUS_SCI_DOORBELL BIT(1) +#define PCC_STATUS_ERROR BIT(2) +#define PCC_STATUS_PLATFORM_NOTIFY BIT(3) +/* Initiator Responder Communications Channel Flags */ +#define PCC_CMD_COMPLETION_NOTIFY BIT(0) + #define MAX_PCC_SUBSPACES 256 + #ifdef CONFIG_PCC extern struct pcc_mbox_chan * pcc_mbox_request_channel(struct mbox_client *cl, int subspace_id);