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Tue, 3 Mar 2020 02:13:09 +0000 From: peng.fan@nxp.com To: sudeep.holla@arm.com, robh+dt@kernel.org Cc: viresh.kumar@linaro.org, f.fainelli@gmail.com, linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Peng Fan Subject: [PATCH V4 0/2] firmware: arm_scmi: add smc/hvc transports support Date: Tue, 3 Mar 2020 10:06:57 +0800 Message-Id: <1583201219-15839-1-git-send-email-peng.fan@nxp.com> X-Mailer: git-send-email 2.7.4 X-ClientProxiedBy: SG2PR06CA0125.apcprd06.prod.outlook.com (2603:1096:1:1d::27) To AM0PR04MB4481.eurprd04.prod.outlook.com (2603:10a6:208:70::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (119.31.174.66) by SG2PR06CA0125.apcprd06.prod.outlook.com (2603:1096:1:1d::27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.2772.15 via Frontend Transport; Tue, 3 Mar 2020 02:13:06 +0000 X-Mailer: git-send-email 2.7.4 X-Originating-IP: [119.31.174.66] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 605d27bc-e824-409e-aaf9-08d7bf186b04 X-MS-TrafficTypeDiagnostic: AM0PR04MB6946:|AM0PR04MB6946: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5516; 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V3: Add back arm,scmi-smc compatible string Change smc-id to arm,smc-id Directly use arm_smccc_1_1_invoke Add prot_id in scmi_chan_info for per protocol shmem usage. V2: patch 1/2: only add smc-id property patch 2/2: Parse smc/hvc from psci node Use prot_id as 2nd arg when issue smc/hvc Differentiate tranports using mboxes or smc-id property https://lore.kernel.org/patchwork/cover/1193435/ This is to add smc/hvc transports support, based on Viresh's v6. SCMI firmware could be implemented in EL3, S-EL1, NS-EL2 or other A core exception level. Then smc/hvc could be used. And for vendor specific firmware, a wrapper layer could added in EL3, S-EL1, NS-EL2 and etc to translate SCMI calls to vendor specific firmware calls. A new compatible string arm,scmi-smc is added. arm,scmi is still for mailbox transports. Per smc/hvc, only Tx supported. Peng Fan (2): dt-bindings: arm: arm,scmi: add smc/hvc transport firmware: arm_scmi: add smc/hvc transport Documentation/devicetree/bindings/arm/arm,scmi.txt | 3 +- drivers/firmware/arm_scmi/Makefile | 2 +- drivers/firmware/arm_scmi/common.h | 1 + drivers/firmware/arm_scmi/driver.c | 1 + drivers/firmware/arm_scmi/smc.c | 145 +++++++++++++++++++++ 5 files changed, 150 insertions(+), 2 deletions(-) create mode 100644 drivers/firmware/arm_scmi/smc.c