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Sun, 05 Jan 2020 02:56:57 -0800 Received: from MTKMBS07N2.mediatek.inc (172.21.101.141) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sun, 5 Jan 2020 02:46:56 -0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sun, 5 Jan 2020 18:46:28 +0800 Received: from localhost.localdomain (10.15.20.246) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Sun, 5 Jan 2020 18:45:20 +0800 From: Chao Hao To: Joerg Roedel , Rob Herring , "Matthias Brugger" Subject: [PATCH v2 08/19] iommu/mediatek: Add mt6779 basic support Date: Sun, 5 Jan 2020 18:45:12 +0800 Message-ID: <20200105104523.31006-9-chao.hao@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200105104523.31006-1-chao.hao@mediatek.com> References: <20200105104523.31006-1-chao.hao@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200105_025701_454541_DD740FC7 X-CRM114-Status: GOOD ( 14.92 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines 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: Anan Sun , devicetree@vger.kernel.org, Jun Yan , wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, Chao Hao , iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, Yong Wu , Cui Zhang , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 1. Add mt6779_data define to support mt6779 IOMMU HW init. 2. For mt6779, there are two IOMMUs, one is MM_IOMMU, the other is VPU_IOMMU. MM_IOMMU is connected smi_larb to support multimedia engine to access DRAM, and VPU_IOMMU is connected to APU_bus to support VPU,MDLA,EDMA to access DRAM. MM_IOMMU and VPU_IOMMU use the same page table to simplify design by "mtk_iommu_get_m4u_data". 3. For smi_larb6, it doesn't use MM_IOMMU, so we can distinguish VPU_IOMMU by it when excutes iommu_probe. 4. For mt6779 APU_IOMMU fault id is irregular, so it was treated specially. Signed-off-by: Chao Hao --- drivers/iommu/mtk_iommu.c | 46 ++++++++++++++++++++++++++++++++++----- drivers/iommu/mtk_iommu.h | 2 ++ 2 files changed, 42 insertions(+), 6 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index ad5690350d6a..7829d1fd08dd 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -43,7 +43,10 @@ #define F_INVLD_EN1 BIT(1) #define REG_MMU_MISC_CTRL 0x048 +#define REG_MMU_STANDARD_AXI_MODE_MT6779 (BIT(3) | BIT(19)) + #define REG_MMU_DCM_DIS 0x050 + #define REG_MMU_WR_LEN 0x054 #define F_MMU_WR_THROT_DIS (BIT(5) | BIT(21)) @@ -95,8 +98,10 @@ #define F_MMU_INT_ID_SUB_COMM_ID(a) (((a) >> 7) & 0x3) #define F_MMU_INT_ID_LARB_ID(a) (((a) >> 7) & 0x7) #define F_MMU_INT_ID_PORT_ID(a) (((a) >> 2) & 0x1f) +#define F_MMU_INT_ID_COMM_APU_ID(a) ((a) & 0x3) +#define F_MMU_INT_ID_SUB_APU_ID(a) (((a) >> 2) & 0x3) -#define MTK_PROTECT_PA_ALIGN 128 +#define MTK_PROTECT_PA_ALIGN 256 /* * Get the local arbiter ID and the portid within the larb arbiter @@ -249,8 +254,15 @@ static irqreturn_t mtk_iommu_isr(int irq, void *dev_id) write = fault_iova & F_MMU_FAULT_VA_WRITE_BIT; fault_port = F_MMU_INT_ID_PORT_ID(regval); if (data->plat_data->has_sub_comm[data->m4u_id]) { - fault_larb = F_MMU_INT_ID_COMM_ID(regval); - sub_comm = F_MMU_INT_ID_SUB_COMM_ID(regval); + /* m4u1 is VPU in mt6779.*/ + if (data->m4u_id && data->plat_data->m4u_plat == M4U_MT6779) { + fault_larb = F_MMU_INT_ID_COMM_APU_ID(regval); + sub_comm = F_MMU_INT_ID_SUB_APU_ID(regval); + fault_port = 0; /* for mt6779 APU ID is irregular */ + } else { + fault_larb = F_MMU_INT_ID_COMM_ID(regval); + sub_comm = F_MMU_INT_ID_SUB_COMM_ID(regval); + } } else { fault_larb = F_MMU_INT_ID_LARB_ID(regval); } @@ -556,11 +568,12 @@ 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 | + 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 | @@ -604,8 +617,16 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data) writel_relaxed(regval, data->base + REG_MMU_WR_LEN); } - if (data->plat_data->reset_axi) + if (data->plat_data->has_misc_ctrl[data->m4u_id]) { + /* special settings for mmu0 (multimedia iommu) */ + regval = readl_relaxed(data->base + REG_MMU_MISC_CTRL); + /* non-standard AXI mode */ + regval &= ~REG_MMU_STANDARD_AXI_MODE_MT6779; + writel_relaxed(regval, data->base + REG_MMU_MISC_CTRL); + } else if (data->plat_data->reset_axi) { + /*disable standard axi when it is REG_MMU_STANDARD_AXI_MODE */ writel_relaxed(0, data->base + REG_MMU_MISC_CTRL); + } if (devm_request_irq(data->dev, data->irq, mtk_iommu_isr, 0, dev_name(data->dev), (void *)data)) { @@ -806,6 +827,18 @@ static const struct mtk_iommu_plat_data mt2712_data = { .inv_sel_reg = REG_MMU_INV_SEL, }; +static const struct mtk_iommu_plat_data mt6779_data = { + .m4u_plat = M4U_MT6779, + .larbid_remap[0] = {0, 1, 2, 3, 5, 7, 10, 9}, + /* vp6a, vp6b, mdla/core2, mdla/edmc*/ + .larbid_remap[1] = {2, 0, 3, 1}, + .has_sub_comm = {true, true}, + .has_wr_len = true, + .has_misc_ctrl = {true, false}, + .inv_sel_reg = REG_MMU_INV_SEL_MT6779, + .m4u1_mask = BIT(6), +}; + static const struct mtk_iommu_plat_data mt8173_data = { .m4u_plat = M4U_MT8173, .has_4gb_mode = true, @@ -824,6 +857,7 @@ static const struct mtk_iommu_plat_data mt8183_data = { static const struct of_device_id mtk_iommu_of_ids[] = { { .compatible = "mediatek,mt2712-m4u", .data = &mt2712_data}, + { .compatible = "mediatek,mt6779-m4u", .data = &mt6779_data}, { .compatible = "mediatek,mt8173-m4u", .data = &mt8173_data}, { .compatible = "mediatek,mt8183-m4u", .data = &mt8183_data}, {} diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h index 0623f199e96f..2b207dcadd06 100644 --- a/drivers/iommu/mtk_iommu.h +++ b/drivers/iommu/mtk_iommu.h @@ -31,6 +31,7 @@ struct mtk_iommu_suspend_reg { enum mtk_iommu_plat { M4U_MT2701, M4U_MT2712, + M4U_MT6779, M4U_MT8173, M4U_MT8183, }; @@ -45,6 +46,7 @@ struct mtk_iommu_plat_data { bool has_vld_pa_rng; bool reset_axi; bool has_wr_len; + bool has_misc_ctrl[2]; u32 m4u1_mask; u32 inv_sel_reg; unsigned char larbid_remap[2][MTK_LARB_NR_MAX];