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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 5EE7DCD6E6E for ; Wed, 3 Jun 2026 15:19:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=YhFCJ0OCDdDnQ9GsEesCvbAqOo6Zg3iFvNCzM+hu5ak=; b=cGrrlm6LvgA8rWW0ZJwYeZYylM eYNkQaXUoMyPIs1cLNyIxkECHyg5E6nU3nGmmWR6tev0he2NHf4EwyFZA43ocgpOnVWYFYs70hZWY DudhUxklsbSaCsQTwPMdZjzBforMgX0IdP7lEouFi8ZO8iCtfq6H6ZW8mP0w/XW9NFWQcIOB+CgFI 6rEHNcnFYF704xZrsq+DuMNTO7hfhdIK+/N6hTMe9z54OEJD/9riZKKTHVoit7yCsDw9WGZB7EDvP cuwoeyi+E3eO4UFqEOJH81v8RA4p1Zn/C3O8LGBVS0PBLbqpHOVZZbMRwUynQhlQq/0omtDzLlZ9T qOhEEO2A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wUnNM-0000000FNDF-16gX; Wed, 03 Jun 2026 15:19:24 +0000 Received: from desiato.infradead.org ([90.155.92.199]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wUnNB-0000000FMxR-1Oml for linux-arm-kernel@bombadil.infradead.org; Wed, 03 Jun 2026 15:19:13 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=YhFCJ0OCDdDnQ9GsEesCvbAqOo6Zg3iFvNCzM+hu5ak=; b=NYpmRNZQ4pdM+/BQTnOukj1S+k v89dSmr/n4F5h4aEIgLfKBuyJE5XWuO9yLcvM+9Q8D/Mmu5oJJLsUQPQXvCkSasg/uONrCUNh63mk fT+0QAvNCVqYDnT4U2lx6sExAO5pvGW5SvTliWWgqUBjljHyof7dsQy5iLc6SwAsdPK418PtZhwzW HggbmpmUcXnSbleC55C0HgvyankwVlArckD24VVUMOnhLAXCJYXl5QYHVKNkaBhqTDCMIbYjhhwa6 prFSslmsAqRHhfVkzqLM2NX7goMFyeKSiBdIe9lgmEqaAvVaakSbptCDh3A/EYAlC450qX2Zh7wsI PgOjqMQg==; Received: from out30-130.freemail.mail.aliyun.com ([115.124.30.130]) by desiato.infradead.org with esmtps (Exim 4.99.2 #2 (Red Hat Linux)) id 1wUnN7-0000000CXiq-115J for linux-arm-kernel@lists.infradead.org; Wed, 03 Jun 2026 15:19:12 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1780499941; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=YhFCJ0OCDdDnQ9GsEesCvbAqOo6Zg3iFvNCzM+hu5ak=; b=kB8lIvHgB7Mf8hAADuyKaxGMB64JMCqGbupJuIST/2yOWLtvhgJiuJb5A0/i2eEs4KG+CoC/ScqH1h7Sb8haCOEFeLkjEm6LnbRbGgdcIGqAfopBc8xFWldM2jw2gp369UaTiuEVI/oDuA6KW2+YI917ysgnH0VMCkhJsev/L/o= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R231e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam011083073210;MF=guanghuifeng@linux.alibaba.com;NM=1;PH=DS;RN=28;SR=0;TI=SMTPD_---0X47fR6-_1780499939; Received: from VM20241011-104.tbsite.net(mailfrom:guanghuifeng@linux.alibaba.com fp:SMTPD_---0X47fR6-_1780499939 cluster:ay36) by smtp.aliyun-inc.com; Wed, 03 Jun 2026 23:18:59 +0800 From: Guanghui Feng To: jgg@ziepe.ca Cc: adrian.larumbe@collabora.com, airlied@gmail.com, alex@shazbot.org, alikernel-developer@linux.alibaba.com, baolu.lu@linux.intel.com, boris.brezillon@collabora.com, dri-devel@lists.freedesktop.org, dwmw2@infradead.org, iommu@lists.linux.dev, joro@8bytes.org, kevin.tian@intel.com, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, liviu.dudau@arm.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, oliver.yang@linux.alibaba.com, robh@kernel.org, robin.murphy@arm.com, shiyu.zsq@linux.alibaba.com, steven.price@arm.com, suravee.suthikulpanit@amd.com, tzimmermann@suse.de, wei.guo.simon@linux.alibaba.com, will@kernel.org, xlpang@linux.alibaba.com Subject: [PATCH v3 21/32] iommu/tegra-smmu: implement iova_to_phys_length Date: Wed, 3 Jun 2026 23:17:53 +0800 Message-ID: <20260603151804.1963871-22-guanghuifeng@linux.alibaba.com> X-Mailer: git-send-email 2.43.7 In-Reply-To: <20260603151804.1963871-1-guanghuifeng@linux.alibaba.com> References: <20260602104637.1219810-1-guanghuifeng@linux.alibaba.com> <20260603151804.1963871-1-guanghuifeng@linux.alibaba.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260603_161909_685427_7A8E501F X-CRM114-Status: UNSURE ( 8.97 ) X-CRM114-Notice: Please train this message. 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 Implement iova_to_phys_length for Tegra SMMU IOMMU driver, returning the actual PTE mapping size. Signed-off-by: Guanghui Feng --- drivers/iommu/tegra-smmu.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 67e7a7b925f0..12f9bb623d87 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -803,8 +803,8 @@ static size_t tegra_smmu_unmap(struct iommu_domain *domain, unsigned long iova, return size; } -static phys_addr_t tegra_smmu_iova_to_phys(struct iommu_domain *domain, - dma_addr_t iova) +static phys_addr_t tegra_smmu_iova_to_phys_length(struct iommu_domain *domain, + dma_addr_t iova, size_t *mapped_length) { struct tegra_smmu_as *as = to_smmu_as(domain); unsigned long pfn; @@ -813,10 +813,13 @@ static phys_addr_t tegra_smmu_iova_to_phys(struct iommu_domain *domain, pte = tegra_smmu_pte_lookup(as, iova, &pte_dma); if (!pte || !*pte) - return 0; + return PHYS_ADDR_MAX; pfn = *pte & as->smmu->pfn_mask; + if (mapped_length) + *mapped_length = SZ_4K; + return SMMU_PFN_PHYS(pfn) + SMMU_OFFSET_IN_PAGE(iova); } @@ -1007,7 +1010,7 @@ static const struct iommu_ops tegra_smmu_ops = { .attach_dev = tegra_smmu_attach_dev, .map_pages = tegra_smmu_map, .unmap_pages = tegra_smmu_unmap, - .iova_to_phys = tegra_smmu_iova_to_phys, + .iova_to_phys_length = tegra_smmu_iova_to_phys_length, .free = tegra_smmu_domain_free, } }; -- 2.43.7