From: Rob Herring <robh@kernel.org>
To: Yong Wu <yong.wu@mediatek.com>
Cc: Joerg Roedel <joro@8bytes.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Robin Murphy <robin.murphy@arm.com>,
Will Deacon <will@kernel.org>, Evan Green <evgreen@chromium.org>,
Tomasz Figa <tfiga@google.com>,
linux-mediatek@lists.infradead.org, srv_heupstream@mediatek.com,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
iommu@lists.linux-foundation.org, youlin.pei@mediatek.com,
Nicolas Boichat <drinkcat@chromium.org>,
anan.sun@mediatek.com, cui.zhang@mediatek.com,
chao.hao@mediatek.com, ming-fan.chen@mediatek.com
Subject: Re: [PATCH 18/21] iommu/mediatek: Add support for multi domain
Date: Thu, 23 Jul 2020 14:47:29 -0600 [thread overview]
Message-ID: <20200723204729.GA823856@bogus> (raw)
In-Reply-To: <20200711064846.16007-19-yong.wu@mediatek.com>
On Sat, Jul 11, 2020 at 02:48:43PM +0800, Yong Wu wrote:
> Some HW IP(ex: CCU) require the special iova range. That means the
> iova got from dma_alloc_attrs for that devices must locate in his
> special range. In this patch, we allocate a special iova_range for
> each a special requirement and create each a iommu domain for each
> a iova_range.
>
> meanwhile we still use one pagetable which support 16GB iova.
>
> After this patch, If the iova range of a master is over 4G, the master
> should:
> a) Declare its special dma_ranges in its dtsi node. For example, If we
> preassign the iova 4G-8G for vcodec, then the vcodec dtsi node should:
> dma-ranges = <0x1 0x0 0x1 0x0 0x1 0x0>; /* 4G ~ 8G */
BTW, dma-ranges should be in the parent node of the vcodec.
> b) Update the dma_mask:
> dma_set_mask_and_coherent(dev, DMA_BIT_MASK(33));
This should happen for you automatically. The DMA PFN offset
should also be 4GB here.
>
> Signed-off-by: Yong Wu <yong.wu@mediatek.com>
> ---
> drivers/iommu/mtk_iommu.c | 49 ++++++++++++++++++++++++++++++++-------
> drivers/iommu/mtk_iommu.h | 3 ++-
> 2 files changed, 42 insertions(+), 10 deletions(-)
next prev parent reply other threads:[~2020-07-23 20:47 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-11 6:48 [PATCH 00/21] MT8192 IOMMU support Yong Wu
2020-07-11 6:48 ` [PATCH 01/21] dt-binding: memory: mediatek: Add a common larb-port header file Yong Wu
2020-07-12 18:06 ` Matthias Brugger
2020-07-13 5:43 ` Pi-Hsun Shih
2020-07-13 6:28 ` Yong Wu
2020-07-20 22:58 ` Rob Herring
2020-07-11 6:48 ` [PATCH 02/21] dt-binding: memory: mediatek: Extend LARB_NR_MAX to 32 Yong Wu
2020-07-20 22:59 ` Rob Herring
2020-07-11 6:48 ` [PATCH 03/21] dt-binding: memory: mediatek: Add domain definition Yong Wu
2020-07-11 6:48 ` [PATCH 04/21] dt-binding: mediatek: Add binding for mt8192 IOMMU and SMI Yong Wu
2020-07-13 5:36 ` Pi-Hsun Shih
2020-07-13 6:54 ` Yong Wu
2020-07-20 23:16 ` Rob Herring
2020-07-21 3:27 ` Yong Wu
2020-07-11 6:48 ` [PATCH 05/21] iommu/mediatek: Use the common mtk-smi-larb-port.h Yong Wu
2020-07-11 6:48 ` [PATCH 06/21] iommu/io-pgtable-arm-v7s: Use ias to check the valid iova in unmap Yong Wu
2020-07-13 0:38 ` Nicolas Boichat
2020-07-13 6:52 ` Yong Wu
2020-07-11 6:48 ` [PATCH 07/21] iommu/io-pgtable-arm-v7s: Extend PA34 for MediaTek Yong Wu
2020-07-11 6:48 ` [PATCH 08/21] iommu/io-pgtable-arm-v7s: Add cfg as a param in some macros Yong Wu
2020-07-11 6:48 ` [PATCH 09/21] iommu/io-pgtable-arm-v7s: Quad lvl1 pgtable for MediaTek Yong Wu
2020-07-11 6:48 ` [PATCH 10/21] iommu/mediatek: Add device link for smi-common and m4u Yong Wu
2020-07-11 6:48 ` [PATCH 11/21] iommu/mediatek: Add power-domain operation Yong Wu
2020-07-13 7:03 ` Pi-Hsun Shih
2020-07-14 9:33 ` Yong Wu
2020-07-27 8:49 ` chao hao
2020-08-07 2:13 ` Yong Wu
2020-07-11 6:48 ` [PATCH 12/21] iommu/mediatek: Add iova reserved function Yong Wu
2020-07-13 7:33 ` Pi-Hsun Shih
2020-07-14 9:32 ` Yong Wu
2020-07-11 6:48 ` [PATCH 13/21] iommu/mediatek: Make MTK_IOMMU depend on ARM64 Yong Wu
2020-07-11 6:48 ` [PATCH 14/21] iommu/mediatek: Add single domain Yong Wu
2020-07-11 6:48 ` [PATCH 15/21] iommu/mediatek: Support master use iova over 32bit Yong Wu
2020-07-11 6:48 ` [PATCH 16/21] iommu/mediatek: Support up to 34bit iova in tlb invalid Yong Wu
2020-07-11 6:48 ` [PATCH 17/21] iommu/mediatek: Support report iova 34bit translation fault in ISR Yong Wu
2020-07-11 6:48 ` [PATCH 18/21] iommu/mediatek: Add support for multi domain Yong Wu
2020-07-23 20:47 ` Rob Herring [this message]
2020-07-27 6:41 ` Yong Wu
2020-07-11 6:48 ` [PATCH 19/21] iommu/mediatek: Adjust the structure Yong Wu
2020-07-11 6:48 ` [PATCH 20/21] iommu/mediatek: Add mt8192 support Yong Wu
2020-07-11 6:48 ` [PATCH 21/21] memory: mtk-smi: " Yong Wu
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