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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" MT8173 is different from other SoCs for MMU_CTRL register. For mt8173, its bit9 is in_order_write_en and doesn't use its default 1'b1. For other SoCs, bit[12] represents victim_tlb_en feature and victim_tlb is enable defaultly(bit[12]=1), if we use "regval = F_MMU_TF_PROT_TO_PROGRAM_ADDR", victim_tlb will be disabled, it will drop iommu performace. So we need to deal with the setting of MMU_CTRL separately for mt8173 and others. Suggested-by: Matthias Brugger Suggested-by: Yong Wu Signed-off-by: Chao Hao --- drivers/iommu/mtk_iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 8299a3299090..e46e2deee3fd 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -543,11 +543,12 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data) return ret; } + regval = readl_relaxed(data->base + REG_MMU_CTRL_REG); if (data->plat_data->m4u_plat == M4U_MT8173) regval = F_MMU_PREFETCH_RT_REPLACE_MOD | F_MMU_TF_PROT_TO_PROGRAM_ADDR_MT8173; else - regval = F_MMU_TF_PROT_TO_PROGRAM_ADDR; + regval |= F_MMU_TF_PROT_TO_PROGRAM_ADDR; writel_relaxed(regval, data->base + REG_MMU_CTRL_REG); regval = F_L2_MULIT_HIT_EN | -- 2.18.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu 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 X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 36CC0C433DF for ; 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Mon, 29 Jun 2020 15:14:25 +0800 Received: from localhost.localdomain (10.15.20.246) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 29 Jun 2020 15:14:25 +0800 From: Chao Hao To: Joerg Roedel , Rob Herring , "Matthias Brugger" Subject: [PATCH v5 09/10] iommu/mediatek: Modify MMU_CTRL register setting Date: Mon, 29 Jun 2020 15:13:09 +0800 Message-ID: <20200629071310.1557-10-chao.hao@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200629071310.1557-1-chao.hao@mediatek.com> References: <20200629071310.1557-1-chao.hao@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 94EA8165AB7894DBAD429B8D4FCAE17010456A72ED24CC60934A89053D6A48F62000:8 X-MTK: N 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: devicetree@vger.kernel.org, FY Yang , wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, Evan Green , Chao Hao , iommu@lists.linux-foundation.org, 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 MT8173 is different from other SoCs for MMU_CTRL register. For mt8173, its bit9 is in_order_write_en and doesn't use its default 1'b1. For other SoCs, bit[12] represents victim_tlb_en feature and victim_tlb is enable defaultly(bit[12]=1), if we use "regval = F_MMU_TF_PROT_TO_PROGRAM_ADDR", victim_tlb will be disabled, it will drop iommu performace. So we need to deal with the setting of MMU_CTRL separately for mt8173 and others. Suggested-by: Matthias Brugger Suggested-by: Yong Wu Signed-off-by: Chao Hao --- drivers/iommu/mtk_iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 8299a3299090..e46e2deee3fd 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -543,11 +543,12 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data) return ret; } + regval = readl_relaxed(data->base + REG_MMU_CTRL_REG); if (data->plat_data->m4u_plat == M4U_MT8173) regval = F_MMU_PREFETCH_RT_REPLACE_MOD | F_MMU_TF_PROT_TO_PROGRAM_ADDR_MT8173; else - regval = F_MMU_TF_PROT_TO_PROGRAM_ADDR; + regval |= F_MMU_TF_PROT_TO_PROGRAM_ADDR; writel_relaxed(regval, data->base + REG_MMU_CTRL_REG); regval = F_L2_MULIT_HIT_EN | -- 2.18.0 _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek 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 X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4D7E2C433E0 for ; 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Mon, 29 Jun 2020 15:14:25 +0800 Received: from localhost.localdomain (10.15.20.246) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 29 Jun 2020 15:14:25 +0800 From: Chao Hao To: Joerg Roedel , Rob Herring , "Matthias Brugger" Subject: [PATCH v5 09/10] iommu/mediatek: Modify MMU_CTRL register setting Date: Mon, 29 Jun 2020 15:13:09 +0800 Message-ID: <20200629071310.1557-10-chao.hao@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200629071310.1557-1-chao.hao@mediatek.com> References: <20200629071310.1557-1-chao.hao@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 94EA8165AB7894DBAD429B8D4FCAE17010456A72ED24CC60934A89053D6A48F62000:8 X-MTK: N X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, FY Yang , wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, Evan Green , Chao Hao , iommu@lists.linux-foundation.org, 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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org MT8173 is different from other SoCs for MMU_CTRL register. For mt8173, its bit9 is in_order_write_en and doesn't use its default 1'b1. For other SoCs, bit[12] represents victim_tlb_en feature and victim_tlb is enable defaultly(bit[12]=1), if we use "regval = F_MMU_TF_PROT_TO_PROGRAM_ADDR", victim_tlb will be disabled, it will drop iommu performace. So we need to deal with the setting of MMU_CTRL separately for mt8173 and others. Suggested-by: Matthias Brugger Suggested-by: Yong Wu Signed-off-by: Chao Hao --- drivers/iommu/mtk_iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 8299a3299090..e46e2deee3fd 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -543,11 +543,12 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data) return ret; } + regval = readl_relaxed(data->base + REG_MMU_CTRL_REG); if (data->plat_data->m4u_plat == M4U_MT8173) regval = F_MMU_PREFETCH_RT_REPLACE_MOD | F_MMU_TF_PROT_TO_PROGRAM_ADDR_MT8173; else - regval = F_MMU_TF_PROT_TO_PROGRAM_ADDR; + regval |= F_MMU_TF_PROT_TO_PROGRAM_ADDR; writel_relaxed(regval, data->base + REG_MMU_CTRL_REG); regval = F_L2_MULIT_HIT_EN | -- 2.18.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel