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=-13.5 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,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 A4E9AC48BD1 for ; Thu, 10 Jun 2021 21:44:07 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7334F613CA for ; Thu, 10 Jun 2021 21:44:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7334F613CA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4356D6E4EC; Thu, 10 Jun 2021 21:44:06 +0000 (UTC) Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) by gabe.freedesktop.org (Postfix) with ESMTPS id A415F6E4EC; Thu, 10 Jun 2021 21:44:05 +0000 (UTC) Received: by mail-pj1-x1029.google.com with SMTP id k5so4480585pjj.1; Thu, 10 Jun 2021 14:44:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=BFeq080l4pyungY1s5smdqe1RkTm59ggcZkYab3uzaA=; b=od6K+JZZ2Ya1vmUSFUzEt823il+QDfWsVXULz6C3V7pvOQe/OzfOO55BSEJzkpc8V/ 5JOvD07BvVRg/OUQJGhdt3WhNAMlxvZRHKw4Tom3lj+u254y+rqPNS7CiyfzFeZWay14 QkHfcnTFWk3raQFcGjmXdXzCYZMGKeZkSW5nAnVFeL5+GKtd58AmcFt7hgF2x+oN5Mdk scz1q9J5xs3hherxMHktgpvuV/RTVG57XvRS98Lz1/enDmR2B62RVDrD80/v5vWPJlmt x5eEyI8CcqhqyEIkxvEwrjmZtexHTnAI/ORQNhFawNle8sCr38KIui2WPmSlV2mbDGXy DUsg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=BFeq080l4pyungY1s5smdqe1RkTm59ggcZkYab3uzaA=; b=pTEQ1h/7hlMahnmJty4diYQE/uiEUU3K7lSauHFlYnzlN70a+v0ZkZirqvdrhkPU/F ynDTnVrHnzeq1vCc3ZLq0LRKZCkFVk19+8aeBvvPPfut+hbaCpC6FX7JAt8P99dD0lmv ulcBw+Qg4bGTqlBN4r7+ZE4kZEQXwbe+b1PG2z/6BqYckSqOdLpqPoGfU5AE/YHapuk/ VrCebrhU5Koo/mBXqFhacBPjU81xZn4CCW985UpLe1cqDWdd0YAsRmEI48ju5p9t0W0V VWFlY6vVm1f+ZaQAtuNFK5bSZ+oTFLciltJn8O5fPZPfDYUMIDQRPs/U4vPYN0wCX9Ws 0w1A== X-Gm-Message-State: AOAM532BTPTtJkcdaEnXJQ8ZWjNHHT20EGjwkDNvrZf/efnGGZtWcHLr N2jCIVxo54D1A19Civ8X+/ofjMDoGRTXyw== X-Google-Smtp-Source: ABdhPJwTXFRr4e/p/Dd+f4YZhg9ockexXtaUtSitnB/HmG6Ps8HeqoEC32RQ+nVKhHQlYKvHIoRK8g== X-Received: by 2002:a17:90a:ad47:: with SMTP id w7mr901700pjv.51.1623361444589; Thu, 10 Jun 2021 14:44:04 -0700 (PDT) Received: from localhost ([2601:1c0:5200:a6:307:a401:7b76:c6e5]) by smtp.gmail.com with ESMTPSA id h18sm3415629pgl.87.2021.06.10.14.44.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Jun 2021 14:44:03 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org, iommu@lists.linux-foundation.org Subject: [PATCH v5 1/5] iommu/arm-smmu: Add support for driver IOMMU fault handlers Date: Thu, 10 Jun 2021 14:44:09 -0700 Message-Id: <20210610214431.539029-2-robdclark@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210610214431.539029-1-robdclark@gmail.com> References: <20210610214431.539029-1-robdclark@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rob Clark , Sai Prakash Ranjan , open list , Will Deacon , linux-arm-msm@vger.kernel.org, Joerg Roedel , Robin Murphy , Jordan Crouse , Jordan Crouse , Krishna Reddy , freedreno@lists.freedesktop.org, "moderated list:ARM SMMU DRIVERS" Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Jordan Crouse Call report_iommu_fault() to allow upper-level drivers to register their own fault handlers. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark Acked-by: Will Deacon --- drivers/iommu/arm/arm-smmu/arm-smmu.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index 6f72c4d208ca..b4b32d31fc06 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -408,6 +408,7 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev) struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_device *smmu = smmu_domain->smmu; int idx = smmu_domain->cfg.cbndx; + int ret; fsr = arm_smmu_cb_read(smmu, idx, ARM_SMMU_CB_FSR); if (!(fsr & ARM_SMMU_FSR_FAULT)) @@ -417,8 +418,12 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev) iova = arm_smmu_cb_readq(smmu, idx, ARM_SMMU_CB_FAR); cbfrsynra = arm_smmu_gr1_read(smmu, ARM_SMMU_GR1_CBFRSYNRA(idx)); - dev_err_ratelimited(smmu->dev, - "Unhandled context fault: fsr=0x%x, iova=0x%08lx, fsynr=0x%x, cbfrsynra=0x%x, cb=%d\n", + ret = report_iommu_fault(domain, NULL, iova, + fsynr & ARM_SMMU_FSYNR0_WNR ? IOMMU_FAULT_WRITE : IOMMU_FAULT_READ); + + if (ret == -ENOSYS) + dev_err_ratelimited(smmu->dev, + "Unhandled context fault: fsr=0x%x, iova=0x%08lx, fsynr=0x%x, cbfrsynra=0x%x, cb=%d\n", fsr, iova, fsynr, cbfrsynra, idx); arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_FSR, fsr); -- 2.31.1