From: Evan Green <evgreen@chromium.org>
To: Yong Wu <yong.wu@mediatek.com>
Cc: youlin.pei@mediatek.com,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
Nicolas Boichat <drinkcat@chromium.org>,
Arnd Bergmann <arnd@arndb.de>,
srv_heupstream@mediatek.com, Joerg Roedel <joro@8bytes.org>,
Will Deacon <will.deacon@arm.com>,
LKML <linux-kernel@vger.kernel.org>,
Tomasz Figa <tfiga@google.com>,
iommu@lists.linux-foundation.org,
Rob Herring <robh+dt@kernel.org>,
linux-mediatek@lists.infradead.org,
Matthias Brugger <matthias.bgg@gmail.com>,
yingjoe.chen@mediatek.com, Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v5 13/20] iommu/mediatek: Add mt8183 IOMMU support
Date: Wed, 30 Jan 2019 10:31:09 -0800 [thread overview]
Message-ID: <CAE=gft6nQ4uv5kqYO876sQaKo71F0RkMj4d-dKDvxi8pEy-WgQ@mail.gmail.com> (raw)
In-Reply-To: <1546314952-15990-14-git-send-email-yong.wu@mediatek.com>
On Mon, Dec 31, 2018 at 7:59 PM Yong Wu <yong.wu@mediatek.com> wrote:
>
> The M4U IP blocks in mt8183 is MediaTek's generation2 M4U which use
> the ARM Short-descriptor like mt8173, and most of the HW registers
> are the same.
>
> Here list main differences between mt8183 and mt8173/mt2712:
> 1) mt8183 has only one M4U HW like mt8173 while mt2712 has two.
> 2) mt8183 don't have the "bclk" clock, it use the EMI clock instead.
> 3) mt8183 can support the dram over 4GB, but it doesn't call this "4GB
> mode".
> 4) mt8183 pgtable base register(0x0) extend bit[1:0] which represent
> the bit[33:32] in the physical address of the pgtable base, But the
> standard ttbr0[1] means the S bit which is enabled defaultly, Hence,
> we add a mask.
> 5) mt8183 HW has a GALS modules, SMI should enable "has_gals" support.
> 6) mt8183 need reset_axi like mt8173.
> 7) the larb-id in smi-common is remapped. M4U should add its larbid_remap.
>
> Signed-off-by: Yong Wu <yong.wu@mediatek.com>
> ---
> drivers/iommu/mtk_iommu.c | 15 ++++++++++++---
> drivers/iommu/mtk_iommu.h | 1 +
> drivers/memory/mtk-smi.c | 20 ++++++++++++++++++++
> 3 files changed, 33 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
> index 2913ddb..66e3615 100644
> --- a/drivers/iommu/mtk_iommu.c
> +++ b/drivers/iommu/mtk_iommu.c
> @@ -36,6 +36,7 @@
> #include "mtk_iommu.h"
>
> #define REG_MMU_PT_BASE_ADDR 0x000
> +#define MMU_PT_ADDR_MASK GENMASK(31, 7)
>
> #define REG_MMU_INVALIDATE 0x020
> #define F_ALL_INVLD 0x2
> @@ -342,7 +343,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
> /* Update the pgtable base address register of the M4U HW */
> if (!data->m4u_dom) {
> data->m4u_dom = dom;
> - writel(dom->cfg.arm_v7s_cfg.ttbr[0],
> + writel(dom->cfg.arm_v7s_cfg.ttbr[0] & MMU_PT_ADDR_MASK,
So there aren't any other bits down below 7 that you need, like the
shareable bits?
next prev parent reply other threads:[~2019-01-30 18:31 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-01 3:55 [PATCH v5 00/18] MT8183 IOMMU SUPPORT Yong Wu
[not found] ` <1546314952-15990-1-git-send-email-yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-01-01 3:55 ` [PATCH v5 01/20] dt-bindings: mediatek: Add binding for mt8183 IOMMU and SMI Yong Wu
[not found] ` <1546314952-15990-2-git-send-email-yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-01-30 18:27 ` Evan Green
2019-01-31 3:19 ` Yong Wu
2019-01-01 3:55 ` [PATCH v5 02/20] iommu/mediatek: Use a struct as the platform data Yong Wu
2019-01-30 18:27 ` Evan Green
2019-01-01 3:55 ` [PATCH v5 03/20] memory: mtk-smi: Use a general config_port interface Yong Wu
2019-01-30 18:27 ` Evan Green
2019-01-01 3:55 ` [PATCH v5 04/20] memory: mtk-smi: Use a struct for the platform data for smi-common Yong Wu
2019-01-30 18:28 ` Evan Green
2019-01-01 3:55 ` [PATCH v5 05/20] iommu/io-pgtable-arm-v7s: Add paddr_to_iopte and iopte_to_paddr helpers Yong Wu
2019-01-30 18:28 ` Evan Green
2019-01-01 3:55 ` [PATCH v6 06/20] iommu/io-pgtable-arm-v7s: Extend MediaTek 4GB Mode Yong Wu
2019-01-30 18:28 ` Evan Green
2019-01-31 6:58 ` Yong Wu
2019-01-31 19:23 ` Evan Green
2019-02-01 9:42 ` Yong Wu
2019-02-05 23:11 ` Evan Green
[not found] ` <CAE=gft4YBvbq5fSuu-RzY9jF8ea8eLKHgOrZ46wPcgdSAWKkVQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-17 10:01 ` Yong Wu
2019-01-01 3:55 ` [PATCH v5 08/20] iommu/mediatek: Add larb-id remapped support Yong Wu
[not found] ` <1546314952-15990-9-git-send-email-yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-01-02 6:15 ` Nicolas Boichat
2019-01-30 18:29 ` Evan Green
2019-01-01 3:55 ` [PATCH v5 09/20] iommu/mediatek: Refine protect memory definition Yong Wu
[not found] ` <1546314952-15990-10-git-send-email-yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-01-02 6:23 ` Nicolas Boichat
[not found] ` <CANMq1KC0zciUAtvcYoxfBOOMbGFu_Un031QemtuDopjWvwk3cw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-01-02 9:33 ` Yong Wu
2019-01-30 18:30 ` Evan Green
2019-01-01 3:55 ` [PATCH v5 10/20] iommu/mediatek: Move reset_axi into plat_data Yong Wu
[not found] ` <1546314952-15990-11-git-send-email-yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-01-02 6:43 ` Nicolas Boichat
2019-01-30 18:30 ` Evan Green
2019-01-31 3:22 ` Yong Wu
2019-01-01 3:55 ` [PATCH v5 11/20] iommu/mediatek: Move vld_pa_rng " Yong Wu
[not found] ` <1546314952-15990-12-git-send-email-yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-01-02 6:45 ` Nicolas Boichat
[not found] ` <CANMq1KAZumH0=iLFgi7=P2mCE4B=7nw_FW9ir4Dwp4M3f8Ukjg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-01-02 9:32 ` Yong Wu
2019-01-30 18:30 ` Evan Green
2019-01-31 3:20 ` Yong Wu
2019-01-31 16:36 ` Evan Green
2019-01-01 3:55 ` [PATCH v5 13/20] iommu/mediatek: Add mt8183 IOMMU support Yong Wu
2019-01-30 18:31 ` Evan Green [this message]
2019-01-31 3:19 ` Yong Wu
2019-01-01 3:55 ` [PATCH v5 14/20] iommu/mediatek: Add mmu1 support Yong Wu
2019-01-30 18:55 ` Evan Green
2019-01-31 3:22 ` Yong Wu
2019-01-01 3:55 ` [PATCH v5 17/20] memory: mtk-smi: Get rid of need_larbid Yong Wu
[not found] ` <1546314952-15990-18-git-send-email-yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-01-30 19:11 ` Evan Green
2019-01-31 3:22 ` Yong Wu
2019-01-31 17:45 ` Evan Green
2019-02-01 9:42 ` Yong Wu
2019-01-01 3:55 ` [PATCH v5 18/20] iommu/mediatek: Fix VLD_PA_RANGE register backup when suspend Yong Wu
[not found] ` <1546314952-15990-19-git-send-email-yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-01-02 6:54 ` Nicolas Boichat
2019-01-02 9:31 ` Yong Wu
2019-01-30 19:11 ` Evan Green
2019-01-01 3:55 ` [PATCH v5 19/20] iommu/mediatek: Add shutdown callback Yong Wu
2019-01-30 19:12 ` Evan Green
2019-01-31 3:21 ` Yong Wu
2019-01-01 3:55 ` [PATCH v5 20/20] iommu/mediatek: Switch to SPDX license identifier Yong Wu
2019-01-30 19:13 ` Evan Green
2019-01-01 3:55 ` [PATCH v5 07/20] iommu/mediatek: Add bclk can be supported optionally Yong Wu
2019-01-30 18:29 ` Evan Green
2019-01-01 3:55 ` [PATCH v5 12/20] memory: mtk-smi: Add gals support Yong Wu
2019-01-14 6:57 ` Yong Wu
[not found] ` <1546314952-15990-13-git-send-email-yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-01-30 18:30 ` Evan Green
2019-01-01 3:55 ` [PATCH v5 15/20] memory: mtk-smi: Invoke pm runtime_callback to enable clocks Yong Wu
2019-01-30 19:05 ` Evan Green
2019-01-31 3:42 ` Yong Wu
2019-01-01 3:55 ` [PATCH v5 16/20] memory: mtk-smi: Add bus_sel for mt8183 Yong Wu
2019-01-30 19:07 ` Evan Green
2019-01-31 3:20 ` Yong Wu
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