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 9A688CD6E68 for ; Tue, 2 Jun 2026 10:47:27 +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=i4l5Y0trE0yKZKVwzh0g8Q2sXJKWMQOzssN47hgN7EY=; b=nn7/Sxv/cGsBnpERsfQZcZYPc+ XGoNH6q3ugYH6IEd+qnb7UDUUmJcG/h4275olHzQ6KUKAXAm0Q+UxcWHSmiXV02aVGxqUJscLCAtY jj9umJQR17CRIqQVE7d+SuzO8Nwyd4J1VLYfX+aimi0jpzsJ73fd5F78oZLxujYUolOgKRyHEhW2x 5HSg3UCLuShrQ5vQu86BkKfWX5nhaPZf5+8ArKGHo+jCpIesPF1XbVtmcw5g6g65zjieXPzc56Dbu 4oGcrUnw5A4nzw+FLfVK8UkIWhuUxdqNiNEjfxuDnWrVja2MQP+SyS52TMjEnxum1KzOfZ9W4D/3p BMV0OLaQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wUMeV-0000000CoQU-3m3b; Tue, 02 Jun 2026 10:47:19 +0000 Received: from out30-98.freemail.mail.aliyun.com ([115.124.30.98]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wUMeO-0000000Co5C-10vD for linux-arm-kernel@lists.infradead.org; Tue, 02 Jun 2026 10:47:16 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1780397230; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=i4l5Y0trE0yKZKVwzh0g8Q2sXJKWMQOzssN47hgN7EY=; b=luRRR9q1uOBbZ5Kdku++wEQ99Zx6VVvL8obWvaJYfL2yDUfTEUqI0uokgfdNT+KFWWB3HMR7ylXfS7yumFvA3cUiL/cwq8ErRRBtQ9b7pNNpYUJxv9LT3IkMOWuUjUEavUETI70JV4H6yimOSQk3ARUI65VTnjY47BTq7Rkp7L4= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R871e4;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_---0X44E97Y_1780397227; Received: from VM20241011-104.tbsite.net(mailfrom:guanghuifeng@linux.alibaba.com fp:SMTPD_---0X44E97Y_1780397227 cluster:ay36) by smtp.aliyun-inc.com; Tue, 02 Jun 2026 18:47:08 +0800 From: Guanghui Feng To: adrian.larumbe@collabora.com, airlied@gmail.com, alex@shazbot.org, baolu.lu@linux.intel.com, boris.brezillon@collabora.com, dri-devel@lists.freedesktop.org, dwmw2@infradead.org, iommu@lists.linux.dev, jgg@ziepe.ca, 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 Cc: alikernel-developer@linux.alibaba.com Subject: [PATCH v2 20/30] iommu/sun50i: implement iova_to_phys_length Date: Tue, 2 Jun 2026 18:46:27 +0800 Message-ID: <20260602104637.1219810-21-guanghuifeng@linux.alibaba.com> X-Mailer: git-send-email 2.43.7 In-Reply-To: <20260602104637.1219810-1-guanghuifeng@linux.alibaba.com> References: <20260531093637.3893199-1-guanghuifeng@linux.alibaba.com> <20260602104637.1219810-1-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-20260602_034712_690416_738B0E39 X-CRM114-Status: UNSURE ( 9.44 ) 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 | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c index be3f1ce696ba..dcd7d926886a 100644 --- a/drivers/iommu/sun50i-iommu.c +++ b/drivers/iommu/sun50i-iommu.c @@ -659,23 +659,30 @@ 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; u32 *page_table; u32 dte, pte; + if (mapped_length) + *mapped_length = 0; + 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 +864,7 @@ 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