From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out30-110.freemail.mail.aliyun.com (out30-110.freemail.mail.aliyun.com [115.124.30.110]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B743B3E1718; Tue, 2 Jun 2026 10:47:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.110 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780397231; cv=none; b=f3b7ZY0xabrhHJ/OhBTv1yxPDpMeDLOvmbDgJIZACZJSI/5jEhU3cwoYZR0n15wxKMKgXnTYMra5bPJaO/MhJe6K50xlDiQQIu05X7xs87P2BN+rHYRb09B+6An6U4QAEcRRNhk8JH8xgcRgXzzJss3/eOqmIvQD9clTB0S0F4Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780397231; c=relaxed/simple; bh=TD9rxeGZm0DOZNpwQ3c09uwLrXwwMws9hNV238491D8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ek3nGFgr3YD1xGOBgwh/IW4xw6mZY1k62ykEeoYzyBZhe8KMGyp2CJwrJxR2K3HdN8zuaop6SL85MWMlxupp8FbrFAp1d1dG2zDkGds6ZmQsH0byMsUeYk37IHzqjf81cbvMLbRKUFEmGYstP3w+DI+XDZCqFr0vBx+uJGIL0Dg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=R4sTV9Gy; arc=none smtp.client-ip=115.124.30.110 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="R4sTV9Gy" DKIM-Signature:v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1780397224; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=U2FkFXQRJe1ip/Bfwjl6wzc4k8wooDcGScTFrXf8jIU=; b=R4sTV9GyUbUBKBBHLtVN3dZK2qR/lN5NwgKGofU2SrOczhneET2K3VoD8AUVhnGLWiZOSeQZSXLPk5b6tYBrKcjyCThp/m7nhjVxbsI5+M0tV6UVE2IKnh6YxHX04YK3luY2eO7osNM5GB9RYB2r4eHECtLwOGnxUTtRoQB/NTI= X-Alimail-AntiSpam:AC=PASS;BC=-1|-1;BR=01201311R111e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033045133197;MF=guanghuifeng@linux.alibaba.com;NM=1;PH=DS;RN=28;SR=0;TI=SMTPD_---0X44E94h_1780397218; Received: from VM20241011-104.tbsite.net(mailfrom:guanghuifeng@linux.alibaba.com fp:SMTPD_---0X44E94h_1780397218 cluster:ay36) by smtp.aliyun-inc.com; Tue, 02 Jun 2026 18:46:58 +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 11/30] iommu/mtk_iommu: implement iova_to_phys_length Date: Tue, 2 Jun 2026 18:46:18 +0800 Message-ID: <20260602104637.1219810-12-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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Migrate MediaTek IOMMU to implement iova_to_phys_length, passing through mapped_length from io-pgtable. Signed-off-by: Guanghui Feng --- drivers/iommu/mtk_iommu.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 2be990c108de..58125f029214 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -858,13 +858,19 @@ static int mtk_iommu_sync_map(struct iommu_domain *domain, unsigned long iova, return 0; } -static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain, - dma_addr_t iova) +static phys_addr_t mtk_iommu_iova_to_phys_length(struct iommu_domain *domain, + dma_addr_t iova, size_t *mapped_length) { struct mtk_iommu_domain *dom = to_mtk_domain(domain); phys_addr_t pa; - pa = dom->iop->iova_to_phys(dom->iop, iova); + if (mapped_length) + *mapped_length = 0; + + pa = dom->iop->iova_to_phys_length(dom->iop, iova, mapped_length); + if (pa == PHYS_ADDR_MAX) + return PHYS_ADDR_MAX; + if (IS_ENABLED(CONFIG_PHYS_ADDR_T_64BIT) && dom->bank->parent_data->enable_4GB && pa >= MTK_IOMMU_4GB_MODE_REMAP_BASE) @@ -1070,7 +1076,7 @@ static const struct iommu_ops mtk_iommu_ops = { .flush_iotlb_all = mtk_iommu_flush_iotlb_all, .iotlb_sync = mtk_iommu_iotlb_sync, .iotlb_sync_map = mtk_iommu_sync_map, - .iova_to_phys = mtk_iommu_iova_to_phys, + .iova_to_phys_length = mtk_iommu_iova_to_phys_length, .free = mtk_iommu_domain_free, } }; -- 2.43.7