From patchwork Wed Jun 2 16:52:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 12295389 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=-13.7 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,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 C548BC4708F for ; Wed, 2 Jun 2021 17:06:14 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 8C86A61C8F for ; Wed, 2 Jun 2021 17:06:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8C86A61C8F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=PtjKubn3h6JiIe8NEH4tTReuM9zNDAQcpgl5ReNQrg8=; b=z4DOdR61nGZv6k JpmtfLXN0aGzW7zOZkddhP5slIv26vvIEhqX+yuxQWYxowEiEEiTbLvISWqJNkfctcJXUvk5lYbhL HC8MrQmpBnltSfeHwavoP0PkupMv6MJhUZbKu9N/Dxjkg38BjzGSQVcwVAAFO5FC6fPEfZ73M81jc lRt5eBNXsCZNBeC/l7JQqAtWfwlpgKeyUl1s9MPcILuVMIiDaDojF+L0eoaUDunUg3SNKTSc3qule kEYeBGlQlNW3myJOubOd+JqM+nQvbqyRY7iGicnUBsKXVwewqP/QYWuFgAzwAwVIk/O+dVbZdzbD6 LUAJS91yxwzShe/hcqvQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1loUHo-005M38-Ij; Wed, 02 Jun 2021 17:04:09 +0000 Received: from mail-pj1-x102e.google.com ([2607:f8b0:4864:20::102e]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1loU3d-005Fw1-6Z for linux-arm-kernel@lists.infradead.org; Wed, 02 Jun 2021 16:49:32 +0000 Received: by mail-pj1-x102e.google.com with SMTP id l23-20020a17090a0717b029016ae774f973so1495908pjl.1 for ; Wed, 02 Jun 2021 09:49:28 -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=9ttH2lB2Q3iQhWxz0MO6TSPDv0IHfj1scw5R0SMtBJU=; b=nvCYD3LtO/CuojD7wCnU+c6O+R2pp2pb1KXMOskVgNnkGQajATVAekeuE6ORBh0Ejc R+rirwTVetIxLdBoJvcWUyV/gTioLE6JphhTZET6wlb79RKHV9XvZeWHYR6je6dKHZhF V9BbncwWr9HZVyJY1PRwvutwmxgKkuv8CpK/MGzO/FlSs4oHWlD92lTft0nt3i7IDq7o rYIzeDd6rqGScVllo4n47EJUGx0wKYSvfhhA9Z3pyjsJXJZMYyVf1+exgCwiMrudG5CO 0qy3xgJ8A/YEyVDXLulIRaX6UkQU9K3uybFEK4T83wm52schJGyQx/lKR2yp0XXccXP1 PthA== 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=9ttH2lB2Q3iQhWxz0MO6TSPDv0IHfj1scw5R0SMtBJU=; b=r2PNmVRqC02fuTll+Sr+3DCNRMNfixOWrewBiBWaORgcCfkncdd+3hBdAPV4yOnc6K c0Eb16D0TGuy1HXz1OZCUu2owB64CYxsSopKZWXuWjsTczx5sGIL0Rgi3v+36/vfyx6r ciR8hVqI6v4wVoa7OADfrngOhpffJ8BuEleqUuXTVfjyBR9aJDfKo8fHiVBVgeNcDOxj SL3X2tv3wagMQGI9PYetBBK2HE7tWqrNxY7vZcgGeDmotwhvea325fwaP7uIIdQZdeyD W33MjsiGT2CGsZzLBnVLtU9T23KM276T9P1DlKebqY/oK21tycq5HsD5Ly5H1hfyjM2O FCbQ== X-Gm-Message-State: AOAM530ovk91ERAilLPl/+gSm2YOnY+mbFUtHSfrEP/fJAbwml8urKJS CJ0hiQFYRgoc5BuDbA2R8gc= X-Google-Smtp-Source: ABdhPJyNuM1C0B/N7VSYw14UuHjXqYthGnVv3VSYDW7n4ueLVcZgKCAnAlLqEclUOMb0/oghQizYeA== X-Received: by 2002:a17:90a:de0c:: with SMTP id m12mr32297535pjv.54.1622652568268; Wed, 02 Jun 2021 09:49:28 -0700 (PDT) Received: from localhost (c-73-25-156-94.hsd1.or.comcast.net. [73.25.156.94]) by smtp.gmail.com with ESMTPSA id z5sm155302pfa.172.2021.06.02.09.49.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Jun 2021 09:49:27 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org Subject: [RESEND PATCH v4 1/6] iommu/arm-smmu: Add support for driver IOMMU fault handlers Date: Wed, 2 Jun 2021 09:52:44 -0700 Message-Id: <20210602165313.553291-2-robdclark@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210602165313.553291-1-robdclark@gmail.com> References: <20210602165313.553291-1-robdclark@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210602_094929_279468_A8837F5B X-CRM114-Status: GOOD ( 12.93 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: 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 , "open list:IOMMU DRIVERS" , Jordan Crouse , Jordan Crouse , freedreno@lists.freedesktop.org, "moderated list:ARM SMMU DRIVERS" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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);