From patchwork Thu Jun 10 07:51:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Philippe Brucker X-Patchwork-Id: 12312163 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=-16.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 03103C47094 for ; Thu, 10 Jun 2021 08:07:47 +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 BBE4F613D9 for ; Thu, 10 Jun 2021 08:07:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BBE4F613D9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org 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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=uUaSmpJMjhs4QiQvJMk6+9Apdsr+5xhle5yqVM4AaYI=; b=meDdwGQXeinU4d jxnAJl+8QLnz+Dj1xTZCQfvics8X0fAKLjl5+UHMuaUU/PXUgVyDdtx//4K4WpNxUPXyirxe66Y15 zXw2EbeH3IcR+awD4rVdL3IOzYHzpM90xwDoU7sIFDT5WQSovGcQPS2QVxwEela2pIWZSCXitK40I xOXJsrI2phwwgfrsDF46urhVjI5X4tU9V9u8jXQqk+rDBzdyIFzWt7l7e+hUq2vdGMKlzoMroTWCB xy1Y3fJHu0sVIVZqIdsEd5nn4TuzOsUZj/3DHZ7bvobllshbKHhxcI1MGa1f1MUlsfSpaho4XC8jq SqWtT0dSNGhgbVnb/7/w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lrFgv-00HNwJ-9R; Thu, 10 Jun 2021 08:05:31 +0000 Received: from mail-wm1-f41.google.com ([209.85.128.41]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lrFfQ-00HNNg-Hf for linux-arm-kernel@lists.infradead.org; Thu, 10 Jun 2021 08:03:58 +0000 Received: by mail-wm1-f41.google.com with SMTP id u5-20020a7bc0450000b02901480e40338bso4279638wmc.1 for ; Thu, 10 Jun 2021 01:03:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=o4eUQK2AFEVDf4pa1XuHff+3rIiA7+oIVY3xnoGa6wY=; b=XTDav+B8gT/1ifsCDS1Li2uacTSbnexp8r5J77P2gZpxWe7w8Ei6kIXPG7R8nvM+1S FuJ/ArwesV+mdX7IpHAratIh5TtjH1HcJPDnOzi14+7a1Krcc9R6t2hcpTOTM6M6ePRN xdrMr4Gqee3y9QyRiImYc7hTw03FrGXOz+8WpuUX/801y4iyuOk9wNyb6066qpPe3NVx MH/A8Kv/qBFaAm7chmPfrTohNNkMF4attVGnn72WPRHXJVHe2WlzBIi9keOFH/VvSyh2 4Z/PTWZVP/LEHned/8zaNrORkp4OLYt1wXV7wV0fWBM3mHIPZPNd1pW3ipYsrQ3Wt6fa yrOA== 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=o4eUQK2AFEVDf4pa1XuHff+3rIiA7+oIVY3xnoGa6wY=; b=cK2qPeJjLu85fp95diUbcyj4yg5oyf66bapGHV6wvWmzGaR3/LhReMRcgr4vZb1JQL TpfYE1MtxCUahFOtLB1d1mct+mRXs+1s3NgbbIJZdu4w3evefB2jhrL01W8TyphVdmIZ iaIrO5+Bdjft1NWaYsxIAMENjTpm/Pnk+6KSqkdWM6UWB4Xx5vzj0VCU1FO4Lum7BdG4 XnJVzfGLv5bKXXoS9G5DlFunodx4fZpX+t0lfoP4qvcu+la0zKPw3lYCvjCiIGrwL4U1 dIVDECZ4zD0lwTpPSEgQNaQg1tmtfGBkpKL5oeTJZcwapO8Z2pdopyKuTTwnQ83EXuEO u/IQ== X-Gm-Message-State: AOAM533TF2ateqMOZnxsK4tpkPMDTXf9Mpx9um0E3Nmxgy+Yv1fMhrXp 6fStjDV+XU18kVIhKJ4N+7hDeA== X-Google-Smtp-Source: ABdhPJx2koDYeA+siqnGagD7qMuftNsXW3jO8Xh3lYQXDR5aJEtWgMgDDbbclFK3Zh/WfkpajxAnjA== X-Received: by 2002:a05:600c:3647:: with SMTP id y7mr13935102wmq.149.1623312173963; Thu, 10 Jun 2021 01:02:53 -0700 (PDT) Received: from localhost.localdomain (adsl-84-226-111-173.adslplus.ch. [84.226.111.173]) by smtp.gmail.com with ESMTPSA id o3sm2715059wrm.78.2021.06.10.01.02.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Jun 2021 01:02:53 -0700 (PDT) From: Jean-Philippe Brucker To: rjw@rjwysocki.net, lenb@kernel.org, joro@8bytes.org, mst@redhat.com Cc: will@kernel.org, catalin.marinas@arm.com, baolu.lu@linux.intel.com, dwmw2@infradead.org, linux-acpi@vger.kernel.org, iommu@lists.linux-foundation.org, virtualization@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, eric.auger@redhat.com, sebastien.boeuf@intel.com, robin.murphy@arm.com, kevin.tian@intel.com, lorenzo.pieralisi@arm.com, guohanjun@huawei.com, sudeep.holla@arm.com, jean-philippe@linaro.org Subject: [PATCH v4 6/6] iommu/virtio: Enable x86 support Date: Thu, 10 Jun 2021 09:51:33 +0200 Message-Id: <20210610075130.67517-7-jean-philippe@linaro.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210610075130.67517-1-jean-philippe@linaro.org> References: <20210610075130.67517-1-jean-philippe@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210610_010356_624923_36D67321 X-CRM114-Status: GOOD ( 15.80 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org With the VIOT support in place, x86 platforms can now use the virtio-iommu. Because the other x86 IOMMU drivers aren't yet ready to use the acpi_dma_setup() path, x86 doesn't implement arch_setup_dma_ops() at the moment. Similarly to Vt-d and AMD IOMMU, call iommu_setup_dma_ops() from probe_finalize(). Acked-by: Joerg Roedel Acked-by: Michael S. Tsirkin Signed-off-by: Jean-Philippe Brucker Reviewed-by: Eric Auger --- drivers/iommu/Kconfig | 3 ++- drivers/iommu/dma-iommu.c | 1 + drivers/iommu/virtio-iommu.c | 8 ++++++++ 3 files changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index aff8a4830dd1..07b7c25cbed8 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -400,8 +400,9 @@ config HYPERV_IOMMU config VIRTIO_IOMMU tristate "Virtio IOMMU driver" depends on VIRTIO - depends on ARM64 + depends on (ARM64 || X86) select IOMMU_API + select IOMMU_DMA select INTERVAL_TREE select ACPI_VIOT if ACPI help diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index 175f8eaeb5b3..46ed43c400cf 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -1332,6 +1332,7 @@ void iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 dma_limit) pr_warn("Failed to set up IOMMU for device %s; retaining platform DMA ops\n", dev_name(dev)); } +EXPORT_SYMBOL_GPL(iommu_setup_dma_ops); static struct iommu_dma_msi_page *iommu_dma_get_msi_page(struct device *dev, phys_addr_t msi_addr, struct iommu_domain *domain) diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c index 218fe8560e8d..77aee1207ced 100644 --- a/drivers/iommu/virtio-iommu.c +++ b/drivers/iommu/virtio-iommu.c @@ -1026,6 +1026,13 @@ static struct iommu_device *viommu_probe_device(struct device *dev) return ERR_PTR(ret); } +static void viommu_probe_finalize(struct device *dev) +{ +#ifndef CONFIG_ARCH_HAS_SETUP_DMA_OPS + iommu_setup_dma_ops(dev, 0, U64_MAX); +#endif +} + static void viommu_release_device(struct device *dev) { struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); @@ -1062,6 +1069,7 @@ static struct iommu_ops viommu_ops = { .iova_to_phys = viommu_iova_to_phys, .iotlb_sync = viommu_iotlb_sync, .probe_device = viommu_probe_device, + .probe_finalize = viommu_probe_finalize, .release_device = viommu_release_device, .device_group = viommu_device_group, .get_resv_regions = viommu_get_resv_regions,