From patchwork Fri May 11 19:06:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Philippe Brucker X-Patchwork-Id: 10395231 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 841F660153 for ; Fri, 11 May 2018 19:36:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8A18B28F4E for ; Fri, 11 May 2018 19:36:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7B05228F98; Fri, 11 May 2018 19:36:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C667528F4E for ; Fri, 11 May 2018 19:36:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: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=jlZ0jOWa9t7rHyxV3GX4g80NM6KXCk6OLDPD1+gd1N4=; b=XFnjM1sE0wY3z0ZPPlX4Y9pjxO KcH4REXUjgGzg2qAavueC4I9bjDmsayHxAtPyszF6y/7hKg1GnZakN7q88AO3ZyllJxn3f14EKwbJ G2DscEgljGtwt8Enpnvod/TdTiJi3+4eviJWHGem/TWmALG/iAe8Oex1sQHn7wy8vvuiu0jXUyXKj bPV65yq/kY+oTSoNzsZCW3VTNIpmuoPaeL1JUqGabzCUE/Syr1tfdE68qpl9FhnGMbxXsRNoa8646 yN/uesc3ulkSdBFvDc1GdAf5k05tLKH0ifPahbNA2fa5i5wmmOjTfZ7+cnkUh8xoyjBrAZlLuqTNT rHKx24ew==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fHDqQ-00080u-Hl; Fri, 11 May 2018 19:36:46 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fHDRV-0007hE-Qo for linux-arm-kernel@lists.infradead.org; Fri, 11 May 2018 19:11:08 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 854871993; Fri, 11 May 2018 12:10:51 -0700 (PDT) Received: from ostrya.cambridge.arm.com (ostrya.cambridge.arm.com [10.1.210.33]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 484D43F23C; Fri, 11 May 2018 12:10:46 -0700 (PDT) From: Jean-Philippe Brucker To: linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v2 36/40] iommu/arm-smmu-v3: Hook up ATC invalidation to mm ops Date: Fri, 11 May 2018 20:06:37 +0100 Message-Id: <20180511190641.23008-37-jean-philippe.brucker@arm.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180511190641.23008-1-jean-philippe.brucker@arm.com> References: <20180511190641.23008-1-jean-philippe.brucker@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180511_121101_917727_B49FDB72 X-CRM114-Status: GOOD ( 10.91 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: xieyisheng1@huawei.com, liubo95@huawei.com, xuzaibo@huawei.com, thunder.leizhen@huawei.com, will.deacon@arm.com, okaya@codeaurora.org, yi.l.liu@intel.com, ashok.raj@intel.com, tn@semihalf.com, joro@8bytes.org, bharatku@xilinx.com, liudongdong3@huawei.com, rfranz@cavium.com, kevin.tian@intel.com, jacob.jun.pan@linux.intel.com, jcrouse@codeaurora.org, rgummal@xilinx.com, jonathan.cameron@huawei.com, shunyong.yang@hxt-semitech.com, robin.murphy@arm.com, ilias.apalodimas@linaro.org, alex.williamson@redhat.com, robdclark@gmail.com, dwmw2@infradead.org, christian.koenig@amd.com, nwatters@codeaurora.org, baolu.lu@linux.intel.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The core calls us when an mm is modified. Perform the required ATC invalidations. Signed-off-by: Jean-Philippe Brucker --- drivers/iommu/arm-smmu-v3.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 7034b0bdcbdf..6cb69ace371b 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1735,6 +1735,15 @@ static int arm_smmu_atc_inv_master_all(struct arm_smmu_master_data *master, return arm_smmu_atc_inv_master(master, &cmd); } +static int arm_smmu_atc_inv_master_range(struct arm_smmu_master_data *master, + int ssid, unsigned long iova, size_t size) +{ + struct arm_smmu_cmdq_ent cmd; + + arm_smmu_atc_inv_to_cmd(ssid, iova, size, &cmd); + return arm_smmu_atc_inv_master(master, &cmd); +} + static size_t arm_smmu_atc_inv_domain(struct arm_smmu_domain *smmu_domain, int ssid, unsigned long iova, size_t size) @@ -2389,11 +2398,12 @@ static void arm_smmu_mm_detach(struct iommu_domain *domain, struct device *dev, struct arm_smmu_mm *smmu_mm = to_smmu_mm(io_mm); struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct iommu_pasid_table_ops *ops = smmu_domain->s1_cfg.ops; + struct arm_smmu_master_data *master = dev->iommu_fwspec->iommu_priv; if (detach_domain) ops->clear_entry(ops, io_mm->pasid, smmu_mm->cd); - /* TODO: Invalidate ATC. */ + arm_smmu_atc_inv_master_all(master, io_mm->pasid); /* TODO: Invalidate all mappings if last and not DVM. */ } @@ -2401,8 +2411,10 @@ static void arm_smmu_mm_invalidate(struct iommu_domain *domain, struct device *dev, struct io_mm *io_mm, unsigned long iova, size_t size) { + struct arm_smmu_master_data *master = dev->iommu_fwspec->iommu_priv; + + arm_smmu_atc_inv_master_range(master, io_mm->pasid, iova, size); /* - * TODO: Invalidate ATC. * TODO: Invalidate mapping if not DVM */ }