From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f41.google.com (mail-wr1-f41.google.com [209.85.221.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A8B633C2B for ; Sun, 10 Jul 2022 23:06:13 +0000 (UTC) Received: by mail-wr1-f41.google.com with SMTP id q9so4916049wrd.8 for ; Sun, 10 Jul 2022 16:06:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=2f1MNXFf/eUDAId4C2kxkA1MS+WaHjSg/obA+yddoAY=; b=A6jyZM7p9U0gZAji/VRrl+pDcvLiQfuijwn/6vIn34EzJwd59ehp2ngdh+WyHAtEmE qNo5+ArvxzxcNUU9LF1x/MjgqJxm0NAzDazGeB7ijtTcJNUNFjNnEFm9WeMoq5r8p9+k ODQbNzVAlRHYUpWUv7PKYdr+uX2hY4WmRAoCwYrsOIYBtPTFniOGkzGZD2+hh9dGPm6v YrrQJiDqdWxbHTUiGO6tKRrm5pMHfSNZQ89iJseoQCU8iJLMo5SjEp4qG517p6FuNe1E VCWLCy8KbJhR5KM60/QWaGe5DS3/eMRRMmTFrcBxrGXd4LRmZmrr8PG2+6miSEQTZX1b x1mA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=2f1MNXFf/eUDAId4C2kxkA1MS+WaHjSg/obA+yddoAY=; b=rd4UyF8pJL/ISUw+X8QWA4Lldf3I2pRw9X8KSx6kTb+2OObDpgnNAO0A3EPUzkaRiu Jkx1vQWmD+8jbHCc3sC0vDGpU68MXC2hFnszZ4wkziYb+gob/OURnUmphdgP+JN0OrDD hSGgmCDVgPfxgKsFsgHy7AtK2NGSXxhTdh9sUBvocq6djdqNO+yHhWX7tLZhCvXyxUBw GtEn5Pyo0I4yDxrOLgOWETvg0g8c30WAAP/Ec+o8Ab2Hu4IwU/7VAlTQTMKiu6c8AiX3 J1LIR1/dkB8eZNMBZeD4fRAVQHGSjrjVOIS1gfp/YACFzSb6GVlEY5yFjPJTEDobdYqV DcXA== X-Gm-Message-State: AJIora+/mi8VppbVP/z/y6NabLWbSRCAEmCmLeS1OCy+9a/hPw8eFudl zBtEOrwI+jq7/XAVIx863KGkqw== X-Google-Smtp-Source: AGRyM1uXSy+6O3wOe/skUDOaKGNjZhKBZ5DB1zppE9YnC4UYd9LI3XBpGotBSKS2BFKSQx6GJYIjSg== X-Received: by 2002:a5d:434a:0:b0:21d:aa7e:b1bb with SMTP id u10-20020a5d434a000000b0021daa7eb1bbmr297352wrr.619.1657494371966; Sun, 10 Jul 2022 16:06:11 -0700 (PDT) Received: from localhost ([31.134.121.151]) by smtp.gmail.com with ESMTPSA id z11-20020a05600c0a0b00b0039c747a1e8fsm9713112wmp.7.2022.07.10.16.06.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 10 Jul 2022 16:06:11 -0700 (PDT) From: Sam Protsenko To: Marek Szyprowski , Krzysztof Kozlowski Cc: Joerg Roedel , Will Deacon , Robin Murphy , Janghyuck Kim , Cho KyongHo , Daniel Mentz , David Virag , Sumit Semwal , iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 6/7] iommu/exynos: Add SysMMU v7 register sets Date: Mon, 11 Jul 2022 02:06:02 +0300 Message-Id: <20220710230603.13526-7-semen.protsenko@linaro.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220710230603.13526-1-semen.protsenko@linaro.org> References: <20220710230603.13526-1-semen.protsenko@linaro.org> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit SysMMU v7 might have different register layouts (VM capable or non-VM capable). Check which layout is implemented in current SysMMU module and prepare the corresponding register table for futher usage. Signed-off-by: Sam Protsenko --- Changes in v2: - (none) This patch is new and added in v2 drivers/iommu/exynos-iommu.c | 26 ++++++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 48681189ccf8..64bf3331064f 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -166,6 +166,8 @@ static u32 lv2ent_offset(sysmmu_iova_t iova) enum { REG_SET_V1, REG_SET_V5, + REG_SET_V7_NON_VM, + REG_SET_V7_VM, MAX_REG_SET }; @@ -201,6 +203,16 @@ static const unsigned int sysmmu_regs[MAX_REG_SET][MAX_REG_IDX] = { 0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, 0x18, 0x20, 0x24, 0x60, 0x64, }, + /* SysMMU v7: Default register set (non-VM) */ + { + 0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, 0x18, 0x20, 0x24, + 0x60, 0x64, + }, + /* SysMMU v7: VM capable register set */ + { + 0x00, 0x04, 0x08, 0x800c, 0x8010, 0x8014, 0x8018, 0x8020, + 0x8024, 0x60, 0x64, + }, }; static struct device *dma_dev; @@ -440,12 +452,18 @@ static void sysmmu_get_hw_info(struct sysmmu_drvdata *data) __sysmmu_enable_clocks(data); __sysmmu_get_version(data); - if (MMU_MAJ_VER(data->version) >= 7 && __sysmmu_has_capa1(data)) - __sysmmu_get_vcr(data); - if (MMU_MAJ_VER(data->version) < 5) + if (MMU_MAJ_VER(data->version) < 5) { data->regs = sysmmu_regs[REG_SET_V1]; - else + } else if (MMU_MAJ_VER(data->version) < 7) { data->regs = sysmmu_regs[REG_SET_V5]; + } else { + if (__sysmmu_has_capa1(data)) + __sysmmu_get_vcr(data); + if (data->has_vcr) + data->regs = sysmmu_regs[REG_SET_V7_VM]; + else + data->regs = sysmmu_regs[REG_SET_V7_NON_VM]; + } __sysmmu_disable_clocks(data); } -- 2.30.2