From patchwork Sat Sep 26 08:07:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolin Chen X-Patchwork-Id: 1371717 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=TsMf55c7; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Bz1jg64nlz9sSG for ; Sat, 26 Sep 2020 18:12:39 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729283AbgIZIMi (ORCPT ); Sat, 26 Sep 2020 04:12:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729225AbgIZIMd (ORCPT ); Sat, 26 Sep 2020 04:12:33 -0400 Received: from mail-pl1-x644.google.com (mail-pl1-x644.google.com [IPv6:2607:f8b0:4864:20::644]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EEBD6C0613CE; Sat, 26 Sep 2020 01:12:32 -0700 (PDT) Received: by mail-pl1-x644.google.com with SMTP id d19so550478pld.0; Sat, 26 Sep 2020 01:12:32 -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; bh=4N2RU9Ug7heB8a6NcMVwTlvvnh89jdIRun82jXeq3G8=; b=TsMf55c7ja55kZb8XRYBn19eKpbGNQUAiN6GDEdfxyh/MeijTAdLF1J82dBA5m+kik j0KlgcvcvtfminbRImgiomnQaQKZDrqPqt5m+v/axnh1cIW7z44+B3vVWBURr+91G/v5 OvRfulPc5r/km0NLdYrJMNktEnDA63LI7fZEdrC/Xg5KsnNsjwvKxztlSDLxy21ChhZI pBt1yvaiT3rB0xwl5P7eCiul5FhvPKe96fBisMwe63KtwFCC3452B7ibydP9GE5xM96d t1D3/epKaiORAwbUG/cu2fMlXbOdk8ypg5RLmcyOx3HVXQ/wY8Iz44RPO/qj2qA1gwp3 njAw== 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; bh=4N2RU9Ug7heB8a6NcMVwTlvvnh89jdIRun82jXeq3G8=; b=P1RHMjJShWfw7rCGLLe8mWPYuY2ol1F0CNoP1OyQX6UGpBYSbzdw+JyvPBi5r0fdWo enYLL0f+quYH9f/yQCX4tODrbw5k7JVAbrUJUgicDD5L2Xq5TbgJY1x/MyyWXXqGFxE1 BPSRGP1ukNSjeqiOFizYFkcegDKsUOWkJ+4mhrzegPOS0vJ4Mi6Pk+heIfAECneBYalP I6qKWhlksnbHre6f5bvMaYPQiqcJJoYx1EG3Zhsux927Oq0X2RfZKBr7hFxzeTLofEQx bpSZM/a/EmRoLwnpv7luisvAfluDJiIg1vBAtcoIRZ8/hGZjCBKd94cAeI5ZRnUEHlSX 3iMQ== X-Gm-Message-State: AOAM532nUZQZXOTBPm907p6s+N9gA9TNaQRadPQyZGItnN5hPxYZWpbb yINd2SRvirYlJO4Lsxi6COk= X-Google-Smtp-Source: ABdhPJwEPdNila3vp3a63sOLkMJAbK9eU0IlCNDn4Y5WBmWj6jjkznuUsugSZPjO284NVlXgV/QGww== X-Received: by 2002:a17:90a:d512:: with SMTP id t18mr1205484pju.106.1601107952502; Sat, 26 Sep 2020 01:12:32 -0700 (PDT) Received: from Asurada-Nvidia.nvidia.com (thunderhill.nvidia.com. [216.228.112.22]) by smtp.gmail.com with ESMTPSA id i1sm4833497pfk.21.2020.09.26.01.12.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 26 Sep 2020 01:12:32 -0700 (PDT) From: Nicolin Chen To: thierry.reding@gmail.com, joro@8bytes.org, krzk@kernel.org Cc: vdumpa@nvidia.com, jonathanh@nvidia.com, linux-tegra@vger.kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/5] iommu/tegra-smmu: Add PCI support Date: Sat, 26 Sep 2020 01:07:18 -0700 Message-Id: <20200926080719.6822-5-nicoleotsuka@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200926080719.6822-1-nicoleotsuka@gmail.com> References: <20200926080719.6822-1-nicoleotsuka@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org This patch simply adds support for PCI devices. Signed-off-by: Nicolin Chen --- drivers/iommu/tegra-smmu.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 97a7185b4578..9dbc5d7183cc 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -935,6 +936,7 @@ static struct iommu_group *tegra_smmu_device_group(struct device *dev) const struct tegra_smmu_group_soc *soc; struct tegra_smmu_group *group; int swgroup = fwspec->ids[0]; + bool pci = dev_is_pci(dev); struct iommu_group *grp; /* Find group_soc associating with swgroup */ @@ -961,7 +963,7 @@ static struct iommu_group *tegra_smmu_device_group(struct device *dev) group->smmu = smmu; group->soc = soc; - group->group = iommu_group_alloc(); + group->group = pci ? pci_device_group(dev) : iommu_group_alloc(); if (IS_ERR(group->group)) { devm_kfree(smmu->dev, group); mutex_unlock(&smmu->lock); @@ -1180,6 +1182,19 @@ struct tegra_smmu *tegra_smmu_probe(struct device *dev, return ERR_PTR(err); } +#ifdef CONFIG_PCI + if (!iommu_present(&pci_bus_type)) { + pci_request_acs(); + err = bus_set_iommu(&pci_bus_type, &tegra_smmu_ops); + if (err < 0) { + bus_set_iommu(&platform_bus_type, NULL); + iommu_device_unregister(&smmu->iommu); + iommu_device_sysfs_remove(&smmu->iommu); + return ERR_PTR(err); + } + } +#endif + if (IS_ENABLED(CONFIG_DEBUG_FS)) tegra_smmu_debugfs_init(smmu);