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 480AACD6E6F 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=QjZ8f27cqLiBL9quajEXvEuD5izxdrCDst1w3hORFvo=; b=jAEe1Ivrv6HE+UFcQfMxHEMmu7 WL2fOPYrMXffuNDDHCnol7isYOwFPGtHGNc6o5a3wH/pj9kI2EMsa/Z9w+u2ljmOr5WmueF+JvKNX jOAPSR3VwmdbgCfN3e9QL9ZB/s0gsKqkoA2th6b0mDgLRnKIH39eAKJPbeBqWGWz/iWDHalHIydB/ T2MCKL0E+EDjEDVI1ijJ1teZm3R2eefFfBJSOcug4JaLCrY3mt6ki4lCYLeZ3xZSzb86Rq7MGjWVE CRyJTcVoT8z2Yt2+U4mUQf5biaTgC8GoPjrtpPj1dARA9qMplJIykWKC09BDYcWEqFn1Y2susXdPg nqu1km1w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wUnNK-0000000FNAC-38MF; Wed, 03 Jun 2026 15:19:22 +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 1wUnN8-0000000FMwI-41vf 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=QjZ8f27cqLiBL9quajEXvEuD5izxdrCDst1w3hORFvo=; b=XJ2bfgGZVEyLYYgEpKM8mRE539 I4kEIbcaVzCfcOuhrIhRebvPm4bkjS7hYKw2sbQJEIfmkwwpd83PV7lBSgMbo8URhTR3HObjb9get 8AvDD+dxA66mY8KWvuIJWPQuZ/kBo5uY7E9b+lMFxEVIZvoon71LRRxlc+IFN3Oqotiw1RR9pcHj6 FrdmNghJx2ugvVO59F+ifs2LOkInJPEY5YRAN9zvnBSLv+NryGvZjhzoHWR8e7KxjO7/CO6Gzby2l XqxMMhVlduv8J2ZEBxCucm1wZ+h+o/mB5kA60HZeLrZwHJwMKI1M7l40O80GASMyR8bx3I7BZzngY W8pyiaZA==; Received: from out199-5.us.a.mail.aliyun.com ([47.90.199.5]) by desiato.infradead.org with esmtps (Exim 4.99.2 #2 (Red Hat Linux)) id 1wUnN4-0000000CXip-1dpQ for linux-arm-kernel@lists.infradead.org; Wed, 03 Jun 2026 15:19:09 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1780499940; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=QjZ8f27cqLiBL9quajEXvEuD5izxdrCDst1w3hORFvo=; b=hV9Koh2cxRoTfjnu9bgWdNIEROapxFIrFH7s2DA6Wf5GwVom6NfWlhUMgWczfQQpvgMpZgqXbYLbfEQrJVp3eZtJHPlkteFXfw3Jt8NqJ96sXRMgmPjQGRZn7LsLPcC3t4OE8LRXsw1luzi9R7wak5RZocgaNyzzbzoa+OtUJd8= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R531e4;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_---0X47fR5b_1780499938; Received: from VM20241011-104.tbsite.net(mailfrom:guanghuifeng@linux.alibaba.com fp:SMTPD_---0X47fR5b_1780499938 cluster:ay36) by smtp.aliyun-inc.com; Wed, 03 Jun 2026 23:18:58 +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 20/32] iommu/sun50i: implement iova_to_phys_length Date: Wed, 3 Jun 2026 23:17:52 +0800 Message-ID: <20260603151804.1963871-21-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_161906_771503_4FE5CC9A X-CRM114-Status: UNSURE ( 9.31 ) 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 sun50i IOMMU driver, returning the actual PTE mapping size. Signed-off-by: Guanghui Feng --- drivers/iommu/sun50i-iommu.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c index be3f1ce696ba..9f39fe4a9d4f 100644 --- a/drivers/iommu/sun50i-iommu.c +++ b/drivers/iommu/sun50i-iommu.c @@ -659,8 +659,9 @@ static size_t sun50i_iommu_unmap(struct iommu_domain *domain, unsigned long iova return SZ_4K; } -static phys_addr_t sun50i_iommu_iova_to_phys(struct iommu_domain *domain, - dma_addr_t iova) +static phys_addr_t sun50i_iommu_iova_to_phys_length(struct iommu_domain *domain, + dma_addr_t iova, + size_t *mapped_length) { struct sun50i_iommu_domain *sun50i_domain = to_sun50i_domain(domain); phys_addr_t pt_phys; @@ -669,13 +670,16 @@ static phys_addr_t sun50i_iommu_iova_to_phys(struct iommu_domain *domain, dte = sun50i_domain->dt[sun50i_iova_get_dte_index(iova)]; if (!sun50i_dte_is_pt_valid(dte)) - return 0; + return PHYS_ADDR_MAX; pt_phys = sun50i_dte_get_pt_address(dte); page_table = (u32 *)phys_to_virt(pt_phys); pte = page_table[sun50i_iova_get_pte_index(iova)]; if (!sun50i_pte_is_page_valid(pte)) - return 0; + return PHYS_ADDR_MAX; + + if (mapped_length) + *mapped_length = SZ_4K; return sun50i_pte_get_page_address(pte) + sun50i_iova_get_page_offset(iova); @@ -857,7 +861,7 @@ static const struct iommu_ops sun50i_iommu_ops = { .flush_iotlb_all = sun50i_iommu_flush_iotlb_all, .iotlb_sync_map = sun50i_iommu_iotlb_sync_map, .iotlb_sync = sun50i_iommu_iotlb_sync, - .iova_to_phys = sun50i_iommu_iova_to_phys, + .iova_to_phys_length = sun50i_iommu_iova_to_phys_length, .map_pages = sun50i_iommu_map, .unmap_pages = sun50i_iommu_unmap, .free = sun50i_iommu_domain_free, -- 2.43.7