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 291CFCD6E57 for ; Wed, 3 Jun 2026 15:19:31 +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=iWO0sMJG8r4J7LKnC484yIJn4WyUtK7EGFantGfMt+4=; b=tGroqopMiJ1A34V7onp6hdGH/r /KVmzEY7KMxjNsh/W/9JWRPSS8Up/Drd/somPMrZDc46ZD7vKSphUlJ3T1JgiokgkJWQNzwjaxxEs Jpz9zJWrde5UsCWt2mwfPl6SuJ/XxsI3YCB0hZm+O7pqV7JNYc/BRWKAZnXhKmBaQI0IDkEDmFku+ 6IwanKf0i2UdqTMwhvkoufupAp4t3xz1Cv90mn7FJI0QdmwzZROgpfXmE9REPhCxwHiDakc7u9Mqc BQDpXPvQoRPafP1QV7/tuFzfbG2CPWr8Lul2xOfipo08ulPEgjbfvZjzTmk+gNCZ1gKsbZLQRbHkE gX9fFZKw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wUnNL-0000000FNBU-1gCU; Wed, 03 Jun 2026 15:19:23 +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 1wUnNA-0000000FMxL-2DFI 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=iWO0sMJG8r4J7LKnC484yIJn4WyUtK7EGFantGfMt+4=; b=UK/eyF8J3u0YVs2H0Fmp6tMGoB 7IaGaEWvFqyCnML+tu84JXcpCky+Qkq8Ls3GOcQvW6sdOU2SU4HNPKkzQrB1I4wLlEMi7itLr/5kC ihYNyni8TOJvMQIcCDXuWMVZ+hhccnjBLz1eIl78xunvC3/rSRl2jgmvjMGAoHjuLm7TDD8/EORwv gEI/1iWWQwOvDxPRYcOFJ4L3INh9QSrcs+mD5aN8cSkBblRl0QhU2JfZlnF30Ex/TWxpmSwH+jIJi MfJU7coSdGEiTcHEpDPfWBMyo/pOjx61JUtI79rTP1CtgA3bY8AkKYJPxyskDdgEIryN0oW97zSZM QgLVKRdg==; Received: from out30-113.freemail.mail.aliyun.com ([115.124.30.113]) by casper.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wUnN5-000000045gQ-41Ih for linux-arm-kernel@lists.infradead.org; Wed, 03 Jun 2026 15:19:11 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1780499933; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=iWO0sMJG8r4J7LKnC484yIJn4WyUtK7EGFantGfMt+4=; b=mgnOawTmohCMp1wPATKwzqF7HiGzpzYONgwlQTYAiJigmHcg/LnN5RL+luPimvQSeqmLIZ4xRyWNAjViMIIecFK/UewRfbINL2z15SlKRAghNmtWUMIQc+8tMBL9/GTcjYCPyOHBdATbxR43+jPyxf2gNL7lrYuPg84RA9bUtnQ= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R581e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033037026112;MF=guanghuifeng@linux.alibaba.com;NM=1;PH=DS;RN=28;SR=0;TI=SMTPD_---0X47fR3Q_1780499930; Received: from VM20241011-104.tbsite.net(mailfrom:guanghuifeng@linux.alibaba.com fp:SMTPD_---0X47fR3Q_1780499930 cluster:ay36) by smtp.aliyun-inc.com; Wed, 03 Jun 2026 23:18:50 +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 12/32] iommu/exynos: implement iova_to_phys_length Date: Wed, 3 Jun 2026 23:17:44 +0800 Message-ID: <20260603151804.1963871-13-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_770120_0A8AC81F X-CRM114-Status: UNSURE ( 9.82 ) 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 Exynos IOMMU driver, returning the actual PTE mapping size. Signed-off-by: Guanghui Feng --- drivers/iommu/exynos-iommu.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 874d05f4b396..17d77b9114c4 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -1372,13 +1372,14 @@ static size_t exynos_iommu_unmap(struct iommu_domain *iommu_domain, return 0; } -static phys_addr_t exynos_iommu_iova_to_phys(struct iommu_domain *iommu_domain, - dma_addr_t iova) +static phys_addr_t exynos_iommu_iova_to_phys_length(struct iommu_domain *iommu_domain, + dma_addr_t iova, + size_t *mapped_length) { struct exynos_iommu_domain *domain = to_exynos_domain(iommu_domain); sysmmu_pte_t *entry; unsigned long flags; - phys_addr_t phys = 0; + phys_addr_t phys = PHYS_ADDR_MAX; spin_lock_irqsave(&domain->pgtablelock, flags); @@ -1386,13 +1387,20 @@ static phys_addr_t exynos_iommu_iova_to_phys(struct iommu_domain *iommu_domain, if (lv1ent_section(entry)) { phys = section_phys(entry) + section_offs(iova); + if (mapped_length) + *mapped_length = SECT_SIZE; } else if (lv1ent_page(entry)) { entry = page_entry(entry, iova); - if (lv2ent_large(entry)) + if (lv2ent_large(entry)) { phys = lpage_phys(entry) + lpage_offs(iova); - else if (lv2ent_small(entry)) + if (mapped_length) + *mapped_length = LPAGE_SIZE; + } else if (lv2ent_small(entry)) { phys = spage_phys(entry) + spage_offs(iova); + if (mapped_length) + *mapped_length = SPAGE_SIZE; + } } spin_unlock_irqrestore(&domain->pgtablelock, flags); @@ -1484,7 +1492,7 @@ static const struct iommu_ops exynos_iommu_ops = { .attach_dev = exynos_iommu_attach_device, .map_pages = exynos_iommu_map, .unmap_pages = exynos_iommu_unmap, - .iova_to_phys = exynos_iommu_iova_to_phys, + .iova_to_phys_length = exynos_iommu_iova_to_phys_length, .free = exynos_iommu_domain_free, } }; -- 2.43.7