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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 28731C4320E for ; Wed, 11 Aug 2021 11:55:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0D4CC60D07 for ; Wed, 11 Aug 2021 11:55:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237373AbhHKLzl (ORCPT ); Wed, 11 Aug 2021 07:55:41 -0400 Received: from szxga03-in.huawei.com ([45.249.212.189]:13307 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237271AbhHKLze (ORCPT ); Wed, 11 Aug 2021 07:55:34 -0400 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.55]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4Gl7RQ1ypLz857J; Wed, 11 Aug 2021 19:50:10 +0800 (CST) Received: from dggpemm500006.china.huawei.com (7.185.36.236) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 11 Aug 2021 19:55:06 +0800 Received: from thunder-town.china.huawei.com (10.174.179.0) by dggpemm500006.china.huawei.com (7.185.36.236) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 11 Aug 2021 19:55:06 +0800 From: Zhen Lei To: Will Deacon , Robin Murphy , "Joerg Roedel" , linux-arm-kernel , iommu , CC: Zhen Lei Subject: [PATCH 4/4] iommu/arm-smmu-v3: Extract reusable function __arm_smmu_cmdq_skip_err() Date: Wed, 11 Aug 2021 19:48:52 +0800 Message-ID: <20210811114852.2429-5-thunder.leizhen@huawei.com> X-Mailer: git-send-email 2.26.0.windows.1 In-Reply-To: <20210811114852.2429-1-thunder.leizhen@huawei.com> References: <20210811114852.2429-1-thunder.leizhen@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.174.179.0] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpemm500006.china.huawei.com (7.185.36.236) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When SMMU_GERROR.CMDQP_ERR is different to SMMU_GERRORN.CMDQP_ERR, it indicates that one or more errors have been encountered on a command queue control page interface. We need to traverse all ECMDQs in that control page to find all errors. For each ECMDQ error handling, it is much the same as the CMDQ error handling. This common processing part is extracted as a new function __arm_smmu_cmdq_skip_err(). Signed-off-by: Zhen Lei --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index be2df5ad2eb51b8..597cc0ff5ef40f0 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -359,7 +359,8 @@ static void arm_smmu_cmdq_build_sync_cmd(u64 *cmd, struct arm_smmu_device *smmu, arm_smmu_cmdq_build_cmd(cmd, &ent); } -static void arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu) +static void __arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu, + struct arm_smmu_queue *q) { static const char * const cerror_str[] = { [CMDQ_ERR_CERROR_NONE_IDX] = "No error", @@ -370,7 +371,6 @@ static void arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu) int i; u64 cmd[CMDQ_ENT_DWORDS]; - struct arm_smmu_queue *q = &smmu->cmdq.q; u32 cons = readl_relaxed(q->cons_reg); u32 idx = FIELD_GET(CMDQ_CONS_ERR, cons); struct arm_smmu_cmdq_ent cmd_sync = { @@ -417,6 +417,11 @@ static void arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu) queue_write(Q_ENT(q, cons), cmd, q->ent_dwords); } +static void arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu) +{ + __arm_smmu_cmdq_skip_err(smmu, &smmu->cmdq.q); +} + /* * Command queue locking. * This is a form of bastardised rwlock with the following major changes: -- 2.26.0.106.g9fadedd