Message ID | 20201209080102.26626-14-yong.wu@mediatek.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Wed, 09 Dec 2020 00:12:46 -0800 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 9 Dec 2020 00:03:26 -0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 9 Dec 2020 16:03:21 +0800 Received: from localhost.localdomain (10.17.3.153) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 9 Dec 2020 16:03:24 +0800 From: Yong Wu <yong.wu@mediatek.com> To: Joerg Roedel <joro@8bytes.org>, Matthias Brugger <matthias.bgg@gmail.com>, Rob Herring <robh+dt@kernel.org>, Will Deacon <will@kernel.org>, Robin Murphy <robin.murphy@arm.com> Subject: [PATCH v5 13/27] iommu/mediatek: Add a flag for iova_34 bit case Date: Wed, 9 Dec 2020 16:00:48 +0800 Message-ID: <20201209080102.26626-14-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20201209080102.26626-1-yong.wu@mediatek.com> References: <20201209080102.26626-1-yong.wu@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-20201209_031253_299805_05D78033 X-CRM114-Status: GOOD ( 15.81 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: <linux-mediatek.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-mediatek>, <mailto:linux-mediatek-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-mediatek/> List-Post: <mailto:linux-mediatek@lists.infradead.org> List-Help: <mailto:linux-mediatek-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-mediatek>, <mailto:linux-mediatek-request@lists.infradead.org?subject=subscribe> Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, Nicolas Boichat <drinkcat@chromium.org>, srv_heupstream@mediatek.com, chao.hao@mediatek.com, linux-kernel@vger.kernel.org, Evan Green <evgreen@chromium.org>, yong.wu@mediatek.com, Tomasz Figa <tfiga@google.com>, iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, Krzysztof Kozlowski <krzk@kernel.org>, anan.sun@mediatek.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" <linux-mediatek-bounces@lists.infradead.org> Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org |
Series |
MT8192 IOMMU support
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expand
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diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index ec3c87d4b172..1bc5e881951c 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -112,6 +112,7 @@ #define HAS_SUB_COMM BIT(5) #define WR_THROT_EN BIT(6) #define HAS_LEGACY_IVRP_PADDR BIT(7) +#define IOVA_34_EN BIT(8) #define MTK_IOMMU_HAS_FLAG(pdata, _x) \ ((((pdata)->flags) & (_x)) == (_x)) @@ -319,7 +320,7 @@ static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom) IO_PGTABLE_QUIRK_TLBI_ON_MAP | IO_PGTABLE_QUIRK_ARM_MTK_EXT, .pgsize_bitmap = mtk_iommu_ops.pgsize_bitmap, - .ias = 32, + .ias = MTK_IOMMU_HAS_FLAG(data->plat_data, IOVA_34_EN) ? 34 : 32, .oas = 35, .tlb = &mtk_iommu_flush_ops, .iommu_dev = data->dev,
Add a HW flag for if the HW support 34bit IOVA. the previous SoC still use 32bit. normally the lvl1 pgtable size is 16KB when ias == 32. if ias == 34, lvl1 pgtable size is 16KB * 4. The purpose of this patch is to save 16KB*3 continuous memory for the previous SoC. Signed-off-by: Yong Wu <yong.wu@mediatek.com> --- drivers/iommu/mtk_iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)