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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 2B27CC433EF for ; Tue, 7 Jun 2022 01:53:57 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id CDA1A83396; Tue, 7 Jun 2022 01:53:56 +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 MjI0TTtr-xiP; Tue, 7 Jun 2022 01:53:56 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp1.osuosl.org (Postfix) with ESMTPS id B34258308D; Tue, 7 Jun 2022 01:53:55 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 89D79C0032; Tue, 7 Jun 2022 01:53:55 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 69B26C002D for ; Tue, 7 Jun 2022 01:53:54 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 593B58329E for ; Tue, 7 Jun 2022 01:53:54 +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 jKiJ4YyAP49Q for ; Tue, 7 Jun 2022 01:53:53 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by smtp1.osuosl.org (Postfix) with ESMTPS id C15E98308D for ; Tue, 7 Jun 2022 01:53:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1654566833; x=1686102833; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=JitaNQYBTqoqThY+bFQS/3C5o+LGSQo3V4PMTcsFT1U=; b=C6QnbNh5IZM45o0KeYKvjsbSCCt9MrFZTXjkYOu+IPqjD24c8O0ndAuA J/xwSPxcZ+EaS0uVQRJH85i3OalMJKwWtOpCf6pnc76l4SfnsDc5aW2kq X2vUCc/OYn8GEw3pyol5P7FmFTA/lF0FMkI6zhbSqjBgOALd0b9hYOz05 CXbbyiK4tGutnhQlOLQKL0fvnqwXYWgespkslhn++PVFfNs2JC/hyW53L QcMofFj7Y9aKHivTkSXk8oOiQ+TLaxJBxbmJXjYUHK8qff8agpnQ0wfqg dbxacX2MSiI6okf4qpumxWem1KSWD8u6owvpxbU34iUXzHNImMdrTsTYa g==; X-IronPort-AV: E=McAfee;i="6400,9594,10370"; a="275478200" X-IronPort-AV: E=Sophos;i="5.91,282,1647327600"; d="scan'208";a="275478200" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jun 2022 18:53:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,282,1647327600"; d="scan'208";a="635886230" Received: from allen-box.sh.intel.com ([10.239.159.48]) by fmsmga008.fm.intel.com with ESMTP; 06 Jun 2022 18:53:49 -0700 From: Lu Baolu To: Joerg Roedel , Jason Gunthorpe , Christoph Hellwig , Kevin Tian , Ashok Raj , Will Deacon , Robin Murphy , Jean-Philippe Brucker , Dave Jiang , Vinod Koul Subject: [PATCH v8 05/11] iommu/vt-d: Add SVA domain support Date: Tue, 7 Jun 2022 09:49:36 +0800 Message-Id: <20220607014942.3954894-6-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220607014942.3954894-1-baolu.lu@linux.intel.com> References: <20220607014942.3954894-1-baolu.lu@linux.intel.com> MIME-Version: 1.0 Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Jacob jun Pan 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Add support for SVA domain allocation and provide an SVA-specific iommu_domain_ops. Signed-off-by: Lu Baolu --- include/linux/intel-iommu.h | 5 ++++ drivers/iommu/intel/iommu.c | 2 ++ drivers/iommu/intel/svm.c | 49 +++++++++++++++++++++++++++++++++++++ 3 files changed, 56 insertions(+) diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 31e3edc0fc7e..9007428a68f1 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -743,6 +743,7 @@ 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); +struct iommu_domain *intel_svm_domain_alloc(void); struct intel_svm_dev { struct list_head list; @@ -768,6 +769,10 @@ struct intel_svm { }; #else static inline void intel_svm_check(struct intel_iommu *iommu) {} +static inline struct iommu_domain *intel_svm_domain_alloc(void) +{ + return NULL; +} #endif #ifdef CONFIG_INTEL_IOMMU_DEBUGFS diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 44016594831d..993a1ce509a8 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4298,6 +4298,8 @@ static struct iommu_domain *intel_iommu_domain_alloc(unsigned type) return domain; case IOMMU_DOMAIN_IDENTITY: return &si_domain->domain; + case IOMMU_DOMAIN_SVA: + return intel_svm_domain_alloc(); default: return NULL; } diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c index d04880a291c3..6def2fdcc862 100644 --- a/drivers/iommu/intel/svm.c +++ b/drivers/iommu/intel/svm.c @@ -931,3 +931,52 @@ 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 intel_iommu *iommu = info->iommu; + struct mm_struct *mm = domain->mm; + 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)); +} + +static const struct iommu_domain_ops intel_svm_domain_ops = { + .set_dev_pasid = intel_svm_attach_dev_pasid, + .block_dev_pasid = intel_svm_detach_dev_pasid, + .free = intel_svm_domain_free, +}; + +struct iommu_domain *intel_svm_domain_alloc(void) +{ + struct dmar_domain *domain; + + domain = kzalloc(sizeof(*domain), GFP_KERNEL); + if (!domain) + return NULL; + domain->domain.ops = &intel_svm_domain_ops; + + return &domain->domain; +} -- 2.25.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu