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=-16.7 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 0C3A6C43461 for ; Fri, 23 Apr 2021 09:52:22 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 9D73C613E4 for ; Fri, 23 Apr 2021 09:52:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9D73C613E4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id DFB2E843E9; Fri, 23 Apr 2021 09:52:20 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id t_0lm2siVOhp; Fri, 23 Apr 2021 09:52:20 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp1.osuosl.org (Postfix) with ESMTP id CF102843D4; Fri, 23 Apr 2021 09:52:19 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id BB724C000F; Fri, 23 Apr 2021 09:52:19 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 86100C000B; Fri, 23 Apr 2021 09:52:18 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 6703040617; Fri, 23 Apr 2021 09:52:18 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6pmswuDqk9tH; Fri, 23 Apr 2021 09:52:17 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp2.osuosl.org (Postfix) with ESMTP id CF09F40610; Fri, 23 Apr 2021 09:52:17 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 542591596; Fri, 23 Apr 2021 02:52:17 -0700 (PDT) Received: from usa.arm.com (a074945.blr.arm.com [10.162.16.71]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 2C41B3F774; Fri, 23 Apr 2021 02:52:12 -0700 (PDT) From: Vivek Gautam To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, virtualization@lists.linux-foundation.org Subject: [PATCH RFC v1 04/11] iommu/virtio: Add a io page fault queue Date: Fri, 23 Apr 2021 15:21:40 +0530 Message-Id: <20210423095147.27922-5-vivek.gautam@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210423095147.27922-1-vivek.gautam@arm.com> References: <20210423095147.27922-1-vivek.gautam@arm.com> Cc: jean-philippe@linaro.org, kevin.tian@intel.com, mst@redhat.com, will.deacon@arm.com, Vivek Gautam , robin.murphy@arm.com X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Add a io page fault queue to the driver so that it can be used to redirect faults to the handler. Signed-off-by: Vivek Gautam --- drivers/iommu/virtio-iommu.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c index fd237cad1ce5..3da5f0807711 100644 --- a/drivers/iommu/virtio-iommu.c +++ b/drivers/iommu/virtio-iommu.c @@ -58,6 +58,7 @@ struct viommu_dev { struct list_head endpoints; struct workqueue_struct *pri_wq; struct viommu_dev_pri_work *pri_work; + struct iopf_queue *iopf_pri; /* Device configuration */ struct iommu_domain_geometry geometry; @@ -581,6 +582,15 @@ static int viommu_add_pstf(struct viommu_endpoint *vdev, void *pstf, size_t len) return 0; } +static int viommu_init_queues(struct viommu_dev *viommu) +{ + viommu->iopf_pri = iopf_queue_alloc(dev_name(viommu->dev)); + if (!viommu->iopf_pri) + return -ENOMEM; + + return 0; +} + static int viommu_probe_endpoint(struct viommu_dev *viommu, struct device *dev) { int ret; @@ -670,6 +680,15 @@ static int viommu_probe_endpoint(struct viommu_dev *viommu, struct device *dev) list_add(&ep->list, &viommu->endpoints); + ret = viommu_init_queues(viommu); + if (ret) + goto out_free_eps; + + kfree(probe); + return 0; + +out_free_eps: + kfree(ep); out_free: kfree(probe); return ret; -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu