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[93.23.105.122]) by smtp.gmail.com with ESMTPSA id j7sm28728689wrw.35.2020.09.07.03.16.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Sep 2020 03:16:58 -0700 (PDT) From: Fabien Parent To: iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH v4 2/3] iommu/mediatek: add flag for legacy ivrp paddr Date: Mon, 7 Sep 2020 12:16:48 +0200 Message-Id: <20200907101649.1573134-2-fparent@baylibre.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200907101649.1573134-1-fparent@baylibre.com> References: <20200907101649.1573134-1-fparent@baylibre.com> MIME-Version: 1.0 Cc: Fabien Parent , miles.chen@mediatek.com, robh+dt@kernel.org, matthias.bgg@gmail.com X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Add a new flag in order to select which IVRP_PADDR format is used by an SoC. Signed-off-by: Fabien Parent Reviewed-by: Yong Wu --- v4: no change v3: set LEGACY_IVRP_PADDR as a flag instead of platform data v2: new patch --- drivers/iommu/mtk_iommu.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 785b228d39a6..b1f85a7e9346 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -116,6 +116,7 @@ #define OUT_ORDER_WR_EN BIT(4) #define HAS_SUB_COMM BIT(5) #define WR_THROT_EN BIT(6) +#define HAS_LEGACY_IVRP_PADDR BIT(7) #define MTK_IOMMU_HAS_FLAG(pdata, _x) \ ((((pdata)->flags) & (_x)) == (_x)) @@ -582,7 +583,7 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data) F_INT_PRETETCH_TRANSATION_FIFO_FAULT; writel_relaxed(regval, data->base + REG_MMU_INT_MAIN_CONTROL); - if (data->plat_data->m4u_plat == M4U_MT8173) + if (MTK_IOMMU_HAS_FLAG(data->plat_data, HAS_LEGACY_IVRP_PADDR)) regval = (data->protect_base >> 1) | (data->enable_4GB << 31); else regval = lower_32_bits(data->protect_base) | @@ -818,7 +819,8 @@ static const struct mtk_iommu_plat_data mt6779_data = { static const struct mtk_iommu_plat_data mt8173_data = { .m4u_plat = M4U_MT8173, - .flags = HAS_4GB_MODE | HAS_BCLK | RESET_AXI, + .flags = HAS_4GB_MODE | HAS_BCLK | RESET_AXI | + HAS_LEGACY_IVRP_PADDR, .inv_sel_reg = REG_MMU_INV_SEL_GEN1, .larbid_remap = {{0}, {1}, {2}, {3}, {4}, {5}}, /* Linear mapping. */ }; -- 2.28.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu