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: 10395071 X-Patchwork-Delegate: bhelgaas@google.com 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 1FDC660153 for ; Fri, 11 May 2018 19:11:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 11F1928F8B for ; Fri, 11 May 2018 19:11:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0479B28F95; Fri, 11 May 2018 19:11:02 +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=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E954128F8B for ; Fri, 11 May 2018 19:11:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752129AbeEKTKx (ORCPT ); Fri, 11 May 2018 15:10:53 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:47426 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752384AbeEKTKv (ORCPT ); Fri, 11 May 2018 15:10:51 -0400 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 Cc: joro@8bytes.org, will.deacon@arm.com, robin.murphy@arm.com, alex.williamson@redhat.com, tn@semihalf.com, liubo95@huawei.com, thunder.leizhen@huawei.com, xieyisheng1@huawei.com, xuzaibo@huawei.com, ilias.apalodimas@linaro.org, jonathan.cameron@huawei.com, liudongdong3@huawei.com, shunyong.yang@hxt-semitech.com, nwatters@codeaurora.org, okaya@codeaurora.org, jcrouse@codeaurora.org, rfranz@cavium.com, dwmw2@infradead.org, jacob.jun.pan@linux.intel.com, yi.l.liu@intel.com, ashok.raj@intel.com, kevin.tian@intel.com, baolu.lu@linux.intel.com, robdclark@gmail.com, christian.koenig@amd.com, bharatku@xilinx.com, rgummal@xilinx.com 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> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.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 */ }