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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7EE9DC433F5 for ; Sun, 10 Apr 2022 10:28:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236965AbiDJKaP (ORCPT ); Sun, 10 Apr 2022 06:30:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38700 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236753AbiDJK3l (ORCPT ); Sun, 10 Apr 2022 06:29:41 -0400 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6CCB0673CA for ; Sun, 10 Apr 2022 03:27:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1649586451; x=1681122451; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Kq4s1NHCuryhOFKECsJ3c8j/56TsU8RAVcNQNz5E+OY=; b=cx4GrEBsx+y23vK4Z/BqxLBBahQjovRfPMhsuF4ztw3p6Q+hsV+7jVvr VtVGaor/PT8wWF2VV7Z81JEuhOIsHG9t3EdqFkFcv3M/EOwbPuM1QcsUq 0ZGDloQ9X+jQnIK8Zmg+rMjF0XYi/vLbNnu3MzDNV3hz4ZaSFd85we+hY MXgHu1imM7IXAghz7cjHy4nwvIA9oQaWRhXbcVjGYfSDtdrUDGBBxh2O6 /C4z7xlkkyrw5jPdlJfwITLTaiUTPLDObxE6fp/pjuUF2El0KMLDQn12B GdP1ojDr27NPQDpiJtdKLAqJ4aw6+AX66ofEd9D9XLYtY1E3qVhuXiymL Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10312"; a="286962902" X-IronPort-AV: E=Sophos;i="5.90,249,1643702400"; d="scan'208";a="286962902" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Apr 2022 03:27:31 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,249,1643702400"; d="scan'208";a="699019615" Received: from allen-box.sh.intel.com ([10.239.159.48]) by fmsmga001.fm.intel.com with ESMTP; 10 Apr 2022 03:27:27 -0700 From: Lu Baolu To: Joerg Roedel , Jason Gunthorpe , Christoph Hellwig , Kevin Tian , Ashok Raj , Will Deacon , Robin Murphy , Jean-Philippe Brucker Cc: Eric Auger , Liu Yi L , Jacob jun Pan , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Lu Baolu Subject: [PATCH RFC v3 06/12] iommu/vt-d: Add SVA domain support Date: Sun, 10 Apr 2022 18:24:37 +0800 Message-Id: <20220410102443.294128-7-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220410102443.294128-1-baolu.lu@linux.intel.com> References: <20220410102443.294128-1-baolu.lu@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support for SVA domain allocation and provide an SVA-specific iommu_domain_ops. Signed-off-by: Lu Baolu --- include/linux/intel-iommu.h | 1 + drivers/iommu/intel/iommu.c | 10 ++++++++++ drivers/iommu/intel/svm.c | 37 +++++++++++++++++++++++++++++++++++++ 3 files changed, 48 insertions(+) diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 2f9891cb3d00..c14283137fb5 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -744,6 +744,7 @@ void intel_svm_unbind(struct iommu_sva *handle); u32 intel_svm_get_pasid(struct iommu_sva *handle); int intel_svm_page_response(struct device *dev, struct iommu_fault_event *evt, struct iommu_page_response *msg); +extern const struct iommu_domain_ops intel_svm_domain_ops; struct intel_svm_dev { struct list_head list; diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index ffad7f8f2d73..9c2714ba04ff 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4324,6 +4324,16 @@ static struct iommu_domain *intel_iommu_domain_alloc(unsigned type) return domain; case IOMMU_DOMAIN_IDENTITY: return &si_domain->domain; +#ifdef CONFIG_INTEL_IOMMU_SVM + case IOMMU_DOMAIN_SVA: + dmar_domain = alloc_domain(type); + if (!dmar_domain) + return NULL; + domain = &dmar_domain->domain; + domain->ops = &intel_svm_domain_ops; + + return domain; +#endif /* CONFIG_INTEL_IOMMU_SVM */ default: return NULL; } diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c index 4c283a250541..251a3a65d77f 100644 --- a/drivers/iommu/intel/svm.c +++ b/drivers/iommu/intel/svm.c @@ -927,3 +927,40 @@ int intel_svm_page_response(struct device *dev, mutex_unlock(&pasid_mutex); return ret; } + +static int intel_svm_attach_dev_pasid(struct iommu_domain *domain, + struct device *dev, ioasid_t pasid) +{ + struct device_domain_info *info = dev_iommu_priv_get(dev); + struct mm_struct *mm = iommu_sva_domain_mm(domain); + struct intel_iommu *iommu = info->iommu; + struct iommu_sva *sva; + int ret = 0; + + mutex_lock(&pasid_mutex); + sva = intel_svm_bind_mm(iommu, dev, mm); + if (IS_ERR(sva)) + ret = PTR_ERR(sva); + mutex_unlock(&pasid_mutex); + + return ret; +} + +static void intel_svm_detach_dev_pasid(struct iommu_domain *domain, + struct device *dev, ioasid_t pasid) +{ + mutex_lock(&pasid_mutex); + intel_svm_unbind_mm(dev, pasid); + mutex_unlock(&pasid_mutex); +} + +static void intel_svm_domain_free(struct iommu_domain *domain) +{ + kfree(to_dmar_domain(domain)); +} + +const struct iommu_domain_ops intel_svm_domain_ops = { + .attach_dev_pasid = intel_svm_attach_dev_pasid, + .detach_dev_pasid = intel_svm_detach_dev_pasid, + .free = intel_svm_domain_free, +}; -- 2.25.1