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Thu, 04 Jun 2020 00:02:06 -0800 Received: from MTKMBS06N2.mediatek.inc (172.21.101.130) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 4 Jun 2020 01:01:23 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs06n2.mediatek.inc (172.21.101.130) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 4 Jun 2020 16:01:21 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 4 Jun 2020 16:01:18 +0800 From: Miles Chen To: Joerg Roedel , Matthias Brugger Subject: [PATCH] iommu/mediatek: Use totalram_pages to setup enable_4GB Date: Thu, 4 Jun 2020 16:01:20 +0800 Message-ID: <20200604080120.2628-1-miles.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-TM-SNTS-SMTP: 302719ED3089E2DF6B542E554C0642AB15FA15964EDC318E0CE26D1C0920F5F82000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200604_010214_444249_A38476F4 X-CRM114-Status: GOOD ( 10.19 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wsd_upstream@mediatek.com, David Hildenbrand , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Chao Hao , Miles Chen , linux-mediatek@lists.infradead.org, Yong Wu , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org To build this driver as a kernel module, we cannot use the unexported symbol "max_pfn" to setup enable_4GB. Use totalram_pages() instead to setup enable_4GB. Suggested-by: Mike Rapoport Signed-off-by: Miles Chen Cc: David Hildenbrand Cc: Yong Wu Cc: Chao Hao --- drivers/iommu/mtk_iommu.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 5f4d6df59cf6..c2798a6e0e38 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -3,7 +3,6 @@ * Copyright (c) 2015-2016 MediaTek Inc. * Author: Yong Wu */ -#include #include #include #include @@ -626,8 +625,8 @@ static int mtk_iommu_probe(struct platform_device *pdev) return -ENOMEM; data->protect_base = ALIGN(virt_to_phys(protect), MTK_PROTECT_PA_ALIGN); - /* Whether the current dram is over 4GB */ - data->enable_4GB = !!(max_pfn > (BIT_ULL(32) >> PAGE_SHIFT)); + /* Whether the current dram is over 4GB, note: DRAM start at 1GB */ + data->enable_4GB = !!(totalram_pages() > ((SZ_2G + SZ_1G) >> PAGE_SHIFT)); if (!data->plat_data->has_4gb_mode) data->enable_4GB = false; -- 2.18.0 _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek