From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CEC7FC43381 for ; Wed, 27 Mar 2019 13:21:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 906EC21734 for ; Wed, 27 Mar 2019 13:21:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="lQHbIAXL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730490AbfC0NVl (ORCPT ); Wed, 27 Mar 2019 09:21:41 -0400 Received: from mail-eopbgr150048.outbound.protection.outlook.com ([40.107.15.48]:27108 "EHLO EUR01-DB5-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729924AbfC0NVT (ORCPT ); Wed, 27 Mar 2019 09:21:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=6F10FU/nMBELMll6buxzdkIXlVxK85wRW3zUgJupC9Y=; b=lQHbIAXLjwEsMbk898r0shYoxQxw/1LaXT08YGpOonMAk2yb0yjmuS/q/zRE5GtlmTkjfRiJzXvM9bq2j/kOuHBgUd0nog7NZbkFsIXY+Yx4x8tpjQtkE2lGa/0GQqJXAHmTzy0pbpM4Plqam0EmOILTQddnX1dM75kgtkUyKnA= Received: from AM0PR04MB5779.eurprd04.prod.outlook.com (20.178.202.151) by AM0PR04MB5907.eurprd04.prod.outlook.com (20.178.202.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1730.18; Wed, 27 Mar 2019 13:21:13 +0000 Received: from AM0PR04MB5779.eurprd04.prod.outlook.com ([fe80::9579:32ab:898e:6769]) by AM0PR04MB5779.eurprd04.prod.outlook.com ([fe80::9579:32ab:898e:6769%2]) with mapi id 15.20.1730.019; Wed, 27 Mar 2019 13:21:13 +0000 From: Abel Vesa To: Sudeep Holla , Marc Zyngier , Rob Herring , Mark Rutland , Shawn Guo , Sascha Hauer , "catalin.marinas@arm.com" , Will Deacon , "Rafael J. Wysocki" , Lorenzo Pieralisi , Fabio Estevam , Lucas Stach , Aisheng Dong CC: dl-linux-imx , "linux-arm-kernel@lists.infradead.org" , Linux Kernel Mailing List , "linux-pm@vger.kernel.org" , Abel Vesa Subject: [RFC 4/7] psci: Add cpu_poke ops to support core poking Thread-Topic: [RFC 4/7] psci: Add cpu_poke ops to support core poking Thread-Index: AQHU5J/zprrbGAWi1k63FnonWZEQSg== Date: Wed, 27 Mar 2019 13:21:13 +0000 Message-ID: <1553692845-20983-5-git-send-email-abel.vesa@nxp.com> References: <1553692845-20983-1-git-send-email-abel.vesa@nxp.com> In-Reply-To: <1553692845-20983-1-git-send-email-abel.vesa@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: VI1PR0701CA0038.eurprd07.prod.outlook.com (2603:10a6:800:90::24) To AM0PR04MB5779.eurprd04.prod.outlook.com (2603:10a6:208:131::23) x-originating-ip: [212.146.100.6] x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.7.4 x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: dd29c57d-4a49-40a1-b67c-08d6b2b71594 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(5600127)(711020)(4605104)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB5907; x-ms-traffictypediagnostic: AM0PR04MB5907: x-microsoft-antispam-prvs: x-forefront-prvs: 0989A7979C x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(136003)(366004)(376002)(346002)(39860400002)(396003)(199004)(189003)(25786009)(2906002)(26005)(386003)(54906003)(8676002)(68736007)(102836004)(6512007)(71200400001)(7416002)(71190400001)(446003)(5660300002)(8936002)(50226002)(4326008)(81166006)(2616005)(476003)(81156014)(44832011)(97736004)(11346002)(6116002)(3846002)(36756003)(105586002)(86362001)(106356001)(2501003)(6486002)(76176011)(6636002)(14454004)(478600001)(6506007)(316002)(52116002)(7736002)(186003)(53936002)(110136005)(6346003)(66066001)(99286004)(14444005)(256004)(486006)(6436002)(305945005)(921003)(1121003);DIR:OUT;SFP:1101;SCL:1;SRVR:AM0PR04MB5907;H:AM0PR04MB5779.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) authentication-results: spf=none (sender IP is ) smtp.mailfrom=abel.vesa@nxp.com; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: gh5VASb52UD4ucQoargW+Pj/M13yvK8y5tsNhjebMg1lP3FXxSLA8rfN3zoOV7LXV4d36KwR0oOSI3g2G5BsZwkouZ/+mIN/m6FzTaFJrLEMvzL79r9lFRAzwiP9ytO2lMqf6SntFsgsbBK4CWJXGIktpoOrQVigR2xm/i2AlM7An1z/1HRU91zG6t9aEoRB6lpW7lb6JkD3EE35xYuqtNUDldyh1y0/ABa/x7qhwJSDiV77QUNgS3X1+0/SzGsZeCtacqFy90YDXBWvBLt3PsJiIpHdUSMrAerqvMPjy3ZoczCsnnAS00MLV858kMP15IwpEMtM4GPtZWIJAyvv5sHzv9dkC6etHDPSMpxOuniHFpmvkMjpAIgvqwnldGBVfflkbmv9JOwprS2iPghzjOxIV2ohG2VVv8KcBlgPk0k= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: dd29c57d-4a49-40a1-b67c-08d6b2b71594 X-MS-Exchange-CrossTenant-originalarrivaltime: 27 Mar 2019 13:21:13.2882 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB5907 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There can be platforms that need a dedicated work to be done in TF-A before the specified core can be woken up through an IPI. Allow those platforms to call into the TF-A to do that work by making use of the cpu_poke operation. Signed-off-by: Abel Vesa --- arch/arm64/include/asm/cpu_ops.h | 1 + arch/arm64/kernel/psci.c | 1 + drivers/firmware/psci.c | 6 ++++++ include/linux/psci.h | 1 + include/uapi/linux/psci.h | 2 ++ 5 files changed, 11 insertions(+) diff --git a/arch/arm64/include/asm/cpu_ops.h b/arch/arm64/include/asm/cpu_= ops.h index 8f03446..913afef 100644 --- a/arch/arm64/include/asm/cpu_ops.h +++ b/arch/arm64/include/asm/cpu_ops.h @@ -60,6 +60,7 @@ struct cpu_operations { #ifdef CONFIG_CPU_IDLE int (*cpu_init_idle)(unsigned int); int (*cpu_suspend)(unsigned long); + int (*cpu_poke)(unsigned int); #endif }; =20 diff --git a/arch/arm64/kernel/psci.c b/arch/arm64/kernel/psci.c index 8cdaf25..53227eb 100644 --- a/arch/arm64/kernel/psci.c +++ b/arch/arm64/kernel/psci.c @@ -115,6 +115,7 @@ const struct cpu_operations cpu_psci_ops =3D { #ifdef CONFIG_CPU_IDLE .cpu_init_idle =3D psci_cpu_init_idle, .cpu_suspend =3D psci_cpu_suspend_enter, + .cpu_poke =3D psci_cpu_suspend_exit, #endif .cpu_init =3D cpu_psci_cpu_init, .cpu_prepare =3D cpu_psci_cpu_prepare, diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c index c80ec1d..282bc47 100644 --- a/drivers/firmware/psci.c +++ b/drivers/firmware/psci.c @@ -73,6 +73,7 @@ enum psci_function { PSCI_FN_CPU_ON, PSCI_FN_CPU_OFF, PSCI_FN_MIGRATE, + PSCI_FN_CPU_POKE, PSCI_FN_MAX, }; =20 @@ -424,6 +425,11 @@ int psci_cpu_suspend_enter(unsigned long index) return ret; } =20 +int psci_cpu_suspend_exit(unsigned int index) +{ + return invoke_psci_fn(PSCI_0_2_FN_CPU_POKE, index, 0, 0); +} + /* ARM specific CPU idle operations */ #ifdef CONFIG_ARM static const struct cpuidle_ops psci_cpuidle_ops __initconst =3D { diff --git a/include/linux/psci.h b/include/linux/psci.h index 8b1b3b5..d863733 100644 --- a/include/linux/psci.h +++ b/include/linux/psci.h @@ -24,6 +24,7 @@ bool psci_tos_resident_on(int cpu); =20 int psci_cpu_init_idle(unsigned int cpu); int psci_cpu_suspend_enter(unsigned long index); +int psci_cpu_suspend_exit(unsigned int index); =20 enum psci_conduit { PSCI_CONDUIT_NONE, diff --git a/include/uapi/linux/psci.h b/include/uapi/linux/psci.h index b3bcabe..19e7481 100644 --- a/include/uapi/linux/psci.h +++ b/include/uapi/linux/psci.h @@ -40,8 +40,10 @@ #define PSCI_0_2_FN_MIGRATE_INFO_UP_CPU PSCI_0_2_FN(7) #define PSCI_0_2_FN_SYSTEM_OFF PSCI_0_2_FN(8) #define PSCI_0_2_FN_SYSTEM_RESET PSCI_0_2_FN(9) +#define PSCI_0_2_FN_CPU_POKE PSCI_0_2_FN(11) =20 #define PSCI_0_2_FN64_CPU_SUSPEND PSCI_0_2_FN64(1) +#define PSCI_0_2_FN64_CPU_POKE PSCI_0_2_FN64(11) #define PSCI_0_2_FN64_CPU_ON PSCI_0_2_FN64(3) #define PSCI_0_2_FN64_AFFINITY_INFO PSCI_0_2_FN64(4) #define PSCI_0_2_FN64_MIGRATE PSCI_0_2_FN64(5) --=20 2.7.4