From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from BN8PR05CU002.outbound.protection.outlook.com (mail-eastus2azon11011023.outbound.protection.outlook.com [52.101.57.23]) (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 039D43E2771; Tue, 13 Oct 2026 07:02:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.57.23 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791874937; cv=fail; b=QVyjr5WQRJFLVfppOVDBlajRHW8J8/tChKvMDZCU9v7C1j/qhDpuefSko8sphKIivQZ6k0JXm6P+k7IwzvWWFBEktsAtHABaDTfXtFlmC1ff1IoylI2KQ5quy42WTXv6AZItpkS971dsDbwrhExJi6L1chUjp6/y/pDDXztLsA8= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791874937; c=relaxed/simple; bh=iHTseLMBPMRV4EwgtyFvu4EIIfO8Ct57/dbaYUznjog=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=UCkq464njZZ2Y3g7dlV0uXuuOOxo6LWptm365wYPGiXKs7kIvTMKqkqQHkYbyXfmYHloolIktsUkCHTdJltD4acNGHbJzIoOjZGQQZBy4EdpVyQHH9HomhZXEWSOyo14gb8CA5KVByfD9lteSPXp3m8dgtFLBB6fTMyBWmfKlyk= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=g8eYOUIT; arc=fail smtp.client-ip=52.101.57.23 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="g8eYOUIT" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=HEAXM28LHlu+l29lcbD2y19iS7Gfw1EdxxRTo/ywpCFqy6Cqxuecu1Sq+dfRPnRaljPuZ7azSZ13QqOfYBGKNNKDkeFtLWuPthCWW9KGEESMQGjz1/ExuXxUPIf1YTV+7SC+z2OqTBKpXCmiggAfTjqwp41vJSrVyZwqp9/SXcQ7VevyLx4YGKWBa52BwrT0sIOp1rVsW/gTz07DsFx1sxQR1q1AEBsRLZ/liAsPoKMqthXLnNcZ0lpRb9Zf6UX0fiWhiLDDSqQrzVa2KAO0kXksU2Y0S5IJ9JQcCbF1nyx+Uk+oW9b7G9xAQhxy6qKSWnSlmiuRsIimFHJ4uvI7/g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=tBu4ItKJRdLhP8EHHQKo4CfxK9EKZa1Hm3KHTYQMOGg=; b=EEsRExR42WLnexyKeKzZurmifWWU7/OgtU2KhSPoZplJu6/tvlUWSV1FtImUuTy0xhNUf1E7ea/3wED2tc1LmXTCIaAcfCBpsgKBoQu6DZKZSTal+9cIzYALsWalb+S/r8I1mHq/0GgYaAip1YVg2xUuiz2Y3ZEmpVhKIRolCWONqdXQIn5UOmuCSdgFpH6wRcxxhHMrtS/OPCGAiWF0aQAVPju8PCK4qBEYG/2Kk33JhtKd5roPXq4LCjNZd4MOkzpzl0lnHTb3JP3dUtuo9KWSEj1lR9DDIqP/92GeeaEXFgmEhO2kz4kH0h06uDK2QqJFE7STqvlDIsNedNEwtQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=tBu4ItKJRdLhP8EHHQKo4CfxK9EKZa1Hm3KHTYQMOGg=; b=g8eYOUITU7/GXLgTQI1+7Bgp8BpjJ0/pEUT0dqwLmfgcikZb85kyzyu3qeZbIuntXvoxbV/tVz1xdrwJGJAREtrlQ59A4R12A1Sn9te+b5zaul4+N7ByfBS+nypmCKoPr43ztXILRYP1n3n65pHRzkhjhl1CjFPifiD8sdtx5NzUJhYPoj1WBeYZPC2OTKyJPMIQMVU850NmOUZqgl6JnGqiMp7s5W+nkNHvoSWaygNsUWG8hPQdh/UbzYlKJ3coG5ZJYpLe+3opmFbYzjkSmomnwJDhdU9xI8Lujv9Oq6jJlZYFLTA8DWZgK/+7vcHXeyCzPJJEbTVp3+/U5qDsig== Authentication-Results: mx.microsoft.com 1; dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from LY0PR12MB727857.namprd12.prod.outlook.com (2603:10b6:408:3ba::5) by CY8PR12MB7416.namprd12.prod.outlook.com (2603:10b6:930:5c::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.496.23; Tue, 13 Oct 2026 07:02:12 +0000 Received: from LY0PR12MB727857.namprd12.prod.outlook.com ([fe80::843e:82cd:41ca:f522]) by LY0PR12MB727857.namprd12.prod.outlook.com ([fe80::843e:82cd:41ca:f522%5]) with mapi id 15.21.0496.021; Tue, 13 Oct 2026 07:02:12 +0000 From: Srirangan Madhavan To: mark.rutland@arm.com, lpieralisi@kernel.org, sudeep.holla@kernel.org, conor@kernel.org, jic23@kernel.org Cc: catalin.marinas@arm.com, will@kernel.org, andre.przywara@arm.com, aneesh.kumar@kernel.org, Souvik.Chakravarty@arm.com, treding@nvidia.com, jonathanh@nvidia.com, bence.csokas@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, Srirangan Madhavan Subject: [PATCH v4 1/2] arm64: smccc: add cache clean/invalidate IDs and return codes Date: Tue, 13 Oct 2026 07:02:04 +0000 Message-ID: <20261013070205.3566865-2-smadhavan@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261013070205.3566865-1-smadhavan@nvidia.com> References: <20261013070205.3566865-1-smadhavan@nvidia.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-ClientProxiedBy: MW4PR03CA0214.namprd03.prod.outlook.com (2603:10b6:303:b9::9) To LY0PR12MB727857.namprd12.prod.outlook.com (2603:10b6:408:3ba::5) Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LY0PR12MB727857:EE_|CY8PR12MB7416:EE_ X-MS-Office365-Filtering-Correlation-Id: 975d38da-4823-4124-3d30-08df28f7e7e0 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|1800799024|7416014|376014|366016|10067099003|261009223027099003|11063799006|6133799003|18002099003|22082099003|56012099006; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:LY0PR12MB727857.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(23010399003)(1800799024)(7416014)(376014)(366016)(10067099003)(261009223027099003)(11063799006)(6133799003)(18002099003)(22082099003)(56012099006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?dmdCaVIrWjFIbWpQNTJObWdPL3hYUUJxdnoyb0hHMzBWNFZyK0xZVXcvYnR4?= =?utf-8?B?ZmI4Qnh0TlpTbTBxQ1lyRkxtOEZWb2JNMGx4ODNNUVhkY0Q3aDNzaGpvY2di?= =?utf-8?B?OG4xTEdVdThSY3lUb3BsVnZwR0kwSEp3dDJURlAwVTRDOUc3RHZrR3lsK09y?= =?utf-8?B?aWREOGRvTzRrVTIvMHdNMHROSkhXVjFOUFpBWm1vOTVHUmM2Q21ScDM0UVlv?= =?utf-8?B?VnZpeTBwTGZHSTRZbWlaUWhCai9ybFRSQmdvMVhGVmdtM051T2dLTjRkVEY5?= =?utf-8?B?aktsdUwza2JnV0VPdktPaVEwZ0VURExqOXgyTmE0aDF4UlBMdkl3aFN5RnpK?= =?utf-8?B?aGtkOTl5dFRpaGNnVjFmejY1M3J4N0tneGZzb3NSNFRhYllWbis1cjR0MlJ6?= =?utf-8?B?WUEwbDUxUGplcVQxcjFsOURiWDBKdlVpQXdoZjJmTmVWNHU3WkE3VVo0bWZS?= =?utf-8?B?V2FPSXF6SzNISDljYUNzTGdDcytYQnlCeHpJcklEZENMUnJjMmVKWGdKOGJK?= =?utf-8?B?NmluM3JMQTJ4MFdXcDRyVnJjZmVnekZ1SUozWUxJdSt6M3ZXQ2N2eFdGa2xr?= =?utf-8?B?cUxpUUJuNFBTY2FrREpMcHJ4QlViVmZBMXR6dk5mTFNodWtZRTE0ZFUxRjc4?= =?utf-8?B?QVR5Slo3cUlmalhESE5vTkZyVm5sek1udHBuLzFXTnppTGFVZ0tpaUlTenJV?= =?utf-8?B?Z1FxNTliRGFtejlmM2l1eUlqNkRZV3F6ZFI3b0RvWVIybDA4a05TWGdKVGVj?= =?utf-8?B?bzhJTm93bGpsWngzb3kzTTJhMDF0amM0MHlxSDY0ODdGWG1oTDRDQm5PeEJL?= =?utf-8?B?Z3R5dXlGaE5NSXNZbGtLa1hnMkd4OGR0Q1V6QW9NVFZzVy9kbGlkekJoSENw?= =?utf-8?B?NU9DVUp3Qm5uM0ZZd3JGSG5xVWdvK0M1Mjlwa1o1UktXYWx0Zi9mOXFWNS9S?= =?utf-8?B?QzAycHdhdkhXOHNlRWZ5T2pzcG9helBNWTQvbjBJcllKWFhlcHZ6WWU0TUVl?= =?utf-8?B?M1IwUWlEWE9USnZ4NUtHODNGRkkwZ2hHK0ZTU09XTExORHJnQ2RiTkdYVTBW?= =?utf-8?B?TFF6RGkzVEdhaUQ0d3h0TXZkYU5RTVZtbDVDZzg2eVNuTnJtdjE3Y2RJakV5?= =?utf-8?B?cFNOMDRPTU9iekgxeS9SSFZwNmlFN3FrbEc5RzZnd3ViaUUrU0U2dlpYR0tU?= =?utf-8?B?SThkSFJld3RiaHgrbXJBWWNydVNsS0VhTHdXYWh5LytZWU5Ibzkyc1llRkRr?= =?utf-8?B?M3c1Ty9sS0x3QU9vRXNwam54QzNVQ0ZBdFlhcnhTcmxmN3JtZW1qTGMzTS91?= =?utf-8?B?d2lvQ0NIYUxhcTlxY0tmbldDcmo2VjFsZFNTYXgwVlBzNjVxK2I2RjBXUHVa?= =?utf-8?B?SVg1UGZPL1Y3eklMQ0ZYeHpPbE5uMHRuWjQvSi9BRCtoZGlzWFR0TlBDYnhy?= =?utf-8?B?SEZrTzNFdWhYMGdGc09vVDl2MTFZVlE2WjZHUXFWS1Z6K3QwdlBxNTJyTVVM?= =?utf-8?B?bDRJb092eWVSdEl5WGRNMmNCWFAwVUlvR3ZTQmlURThPdlo5UGx3bzI3SEVw?= =?utf-8?B?YnFYUm96cGpNNzhyb0laaGg2R0IvV2w5dnRWUUxWQXdadTU3MS9LYU9aak02?= =?utf-8?B?UExuOWdZZFpxUmNLWnNKVksrS1FOL2g0YmlvL2lYODVuMkd5ZUZ4S1Y5eEF2?= =?utf-8?B?bHNUbC8wODVobHlvVnFnc0NGazFjRk5TVzMxTTllL1BJdjFQUTA1ckdlRkh3?= =?utf-8?B?SlRJZFhqUitQQ0JVS0RBbVVJZkhjbnBNVEY2R041MmNxa2lZaXphT3J4aEk2?= =?utf-8?B?czV3ZWlLbkNSRVhBd1BUWGtmb2xZTHg1ZmVLMnBjQ1RHWDV2bjJqbExyMG1i?= =?utf-8?B?VmQ3L1Q5SjZYdm9MNW03ZXR3U254RXJ2d09ONDZSd2N1MGtjQWxZTWpMZWFK?= =?utf-8?B?bitJMXFCMTJOOEcwYTlXYUlZVzBpRGZjL3MwQkFEdUxYcjlma3FiWUdtbm92?= =?utf-8?B?YWwyY1lKNWk0TDFvRUg5WlIyejM0eC9ZaWdGMTBsR0NsWGZlMjE0N0JVMzlx?= =?utf-8?B?S3BJRCsrdFRERXk5WXlJUGVBQTQyemFiS25Zd2kyV01ndE9kdlBYL3Nnc1l1?= =?utf-8?B?N1Q3bGJ4ZkFaQS9iTm8rczZNTXpESHRqcmpFTHV4Sjc3c3ZzK095bXlRb3VD?= =?utf-8?B?dndhb0UyclVLelJXYXpWc3BCV1hmMlQxT2hTNFVpZCtLS1dpODhMMnBOWmZL?= =?utf-8?B?N3J6bHpjZlNDQ21XUTdRQkd2LzFOMlZBNkx0WTJ3MnZWeFRLeE5VWGtad2Jt?= =?utf-8?B?Ky9OVDh1QTFaNUlSUGhwbzVzUUdoRVZzVTVDNUtMdUViV0k0OEhzdz09?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 975d38da-4823-4124-3d30-08df28f7e7e0 X-MS-Exchange-CrossTenant-AuthSource: LY0PR12MB727857.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Oct 2026 07:02:12.2685 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: gVip0UqxhYyJhuX9czwE1nvBhTDYgbq62S7eoMjJO/i/VPuWeRIdl0Z2qtOBX1wngJUoV2X5JMOSfYYNer8TQA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB7416 Define SMCCC Arch function IDs for CLEAN_INV_MEMREGION and its ATTRIBUTES call, and add RATE_LIMITED/BUSY return codes from DEN0028 for callers that need transient error handling. Signed-off-by: Srirangan Madhavan Reviewed-by: Jonathan Cameron Reviewed-by: Bence Csókás Reviewed-by: Andre Przywara --- include/linux/arm-smccc.h | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index 4de81848fe2e..2e205320d88a 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -116,6 +116,22 @@ ARM_SMCCC_SMC_32, \ ARM_SMCCC_OWNER_CPU, 0x10) +/* + * DEN0028 v1.7 defines these cache maintenance functions as SMC64 + * because they carry 64-bit memory range arguments. + */ +#define ARM_SMCCC_ARCH_CLEAN_INV_MEMREGION \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_ARCH, \ + 0x5) + +#define ARM_SMCCC_ARCH_CLEAN_INV_MEMREGION_ATTRIBUTES \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_ARCH, \ + 0x6) + #define ARM_SMCCC_VENDOR_HYP_CALL_UID_FUNC_ID \ ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ ARM_SMCCC_SMC_32, \ @@ -305,13 +321,14 @@ 0x53) /* - * Return codes defined in ARM DEN 0070A - * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C + * Return codes defined by Arm SMCCC (DEN0028 v1.7). */ #define SMCCC_RET_SUCCESS 0 #define SMCCC_RET_NOT_SUPPORTED -1 #define SMCCC_RET_NOT_REQUIRED -2 #define SMCCC_RET_INVALID_PARAMETER -3 +#define SMCCC_RET_RATE_LIMITED -4 +#define SMCCC_RET_BUSY -5 #ifndef __ASSEMBLY__ -- 2.43.0