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 7A62ACD6E57 for ; Wed, 3 Jun 2026 15:19:58 +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=MjBO95xDSmLrp4JNHx4KMhFqFrLuEXxwuA67QFALbhc=; b=n+djL653KfVz9AjPA4PiJjDbqL SyBgg9OM4znYGSa/Op+64jWRL7n2I8NUiPe1widR2ThFUgozQiNkRpcqecw4npJUpiFzuCXvvR7k5 nYMlW39t/oEUa2rDB3H6y/KiwN6yVnYl8t6xKBXJ8pqGnn6tis6xGAdALb++fZqPopC/FBHeOEk/O UjkT9AHUixjJhV9uO3AUuVfLHs+OqlCW1/oeF2Q4qBTZQn09Dm3XPhLfFI+xDYvw124xMh4f4AtZw snX7O0XNyC4R8zHpn+jVPfYlleH8TcE4SipmDY5rcTN8KHwFABl5J17Yrmi8ru5vF82cYGUXp4w6S TpOkpXbg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wUnNP-0000000FNGs-1BzC; Wed, 03 Jun 2026 15:19:27 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wUnN9-0000000FMwd-0piT 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=casper.20170209; 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=MjBO95xDSmLrp4JNHx4KMhFqFrLuEXxwuA67QFALbhc=; b=ZFKjELxbOfwncHSdp9gz0c2YN4 7tjSrHz5fpnL7ErTgz8m9F4afk8cgcAfUov1AYxVNajMhKw2b8Sjqc+aODD5LYUDGI1y0VxhVsH1t 2g4SJZ8H4RHqoljxuyEzB+JvEO0So2dSgtYnKqDygZU4p54+QiTElavilPs+C68qILT1OaHI0pE4a ufwWU1QrK67T5K3fNMWZSCLC0PYafNfjBAV0+a4HcG4KfzbL+WFMLB+ROx3QxpmukcZPF5bOzrXB7 xXtZYJMXzbP5ArAfRhqtdeR34aOoqON+tcLbjFoE6JKVuWbSutCnk5Thjk3bTf7cplPqbizGOjR8V XnawGg2w==; Received: from out30-97.freemail.mail.aliyun.com ([115.124.30.97]) by casper.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wUnN5-000000045kG-0mt5 for linux-arm-kernel@lists.infradead.org; Wed, 03 Jun 2026 15:19:10 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1780499939; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=MjBO95xDSmLrp4JNHx4KMhFqFrLuEXxwuA67QFALbhc=; b=R8Owicpc8mgsg/lriAfy1dQYAuR4cA7Z6ZHdp6yfeBXa7edr1kYSWDDAAmYRioNnonc8UM5bVPOjtfIzVaogjBLhPmLbLHz0twlhGWT6YKdpRg0ByFf9a27Phf0DJW34CSaZK8sxcZJ8O47mPbV/2KxxoS+neFLzyFFKAP7gz78= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R721e4;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_---0X47fR5K_1780499937; Received: from VM20241011-104.tbsite.net(mailfrom:guanghuifeng@linux.alibaba.com fp:SMTPD_---0X47fR5K_1780499937 cluster:ay36) by smtp.aliyun-inc.com; Wed, 03 Jun 2026 23:18:57 +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 19/32] iommu/sprd: implement iova_to_phys_length Date: Wed, 3 Jun 2026 23:17:51 +0800 Message-ID: <20260603151804.1963871-20-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_161908_012344_BD0A79E2 X-CRM114-Status: UNSURE ( 8.93 ) 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 Spreadtrum IOMMU driver, returning the actual PTE mapping size. Signed-off-by: Guanghui Feng --- drivers/iommu/sprd-iommu.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/sprd-iommu.c b/drivers/iommu/sprd-iommu.c index c1a34445d244..3c04ec040d96 100644 --- a/drivers/iommu/sprd-iommu.c +++ b/drivers/iommu/sprd-iommu.c @@ -366,8 +366,9 @@ static void sprd_iommu_sync(struct iommu_domain *domain, sprd_iommu_sync_map(domain, 0, 0); } -static phys_addr_t sprd_iommu_iova_to_phys(struct iommu_domain *domain, - dma_addr_t iova) +static phys_addr_t sprd_iommu_iova_to_phys_length(struct iommu_domain *domain, + dma_addr_t iova, + size_t *mapped_length) { struct sprd_iommu_domain *dom = to_sprd_domain(domain); unsigned long flags; @@ -376,13 +377,19 @@ static phys_addr_t sprd_iommu_iova_to_phys(struct iommu_domain *domain, unsigned long end = domain->geometry.aperture_end; if (WARN_ON(iova < start || iova > end)) - return 0; + return PHYS_ADDR_MAX; spin_lock_irqsave(&dom->pgtlock, flags); pa = *(dom->pgt_va + ((iova - start) >> SPRD_IOMMU_PAGE_SHIFT)); - pa = (pa << SPRD_IOMMU_PAGE_SHIFT) + ((iova - start) & (SPRD_IOMMU_PAGE_SIZE - 1)); spin_unlock_irqrestore(&dom->pgtlock, flags); + if (!pa) + return PHYS_ADDR_MAX; + + pa = (pa << SPRD_IOMMU_PAGE_SHIFT) + ((iova - start) & (SPRD_IOMMU_PAGE_SIZE - 1)); + if (mapped_length) + *mapped_length = SPRD_IOMMU_PAGE_SIZE; + return pa; } @@ -420,7 +427,7 @@ static const struct iommu_ops sprd_iommu_ops = { .unmap_pages = sprd_iommu_unmap, .iotlb_sync_map = sprd_iommu_sync_map, .iotlb_sync = sprd_iommu_sync, - .iova_to_phys = sprd_iommu_iova_to_phys, + .iova_to_phys_length = sprd_iommu_iova_to_phys_length, .free = sprd_iommu_domain_free, } }; -- 2.43.7