From: Yong Wu <yong.wu@mediatek.com>
To: Joerg Roedel <joro@8bytes.org>, Rob Herring <robh+dt@kernel.org>,
"Matthias Brugger" <matthias.bgg@gmail.com>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>
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
Subject: [PATCH v6 29/33] iommu/mediatek: Add iova reserved function
Date: Mon, 11 Jan 2021 19:19:10 +0800 [thread overview]
Message-ID: <20210111111914.22211-30-yong.wu@mediatek.com> (raw)
In-Reply-To: <20210111111914.22211-1-yong.wu@mediatek.com>
For multiple iommu_domains, we need to reserve some iova regions. Take a
example, If the default iova region is 0 ~ 4G, but the 0x4000_0000 ~
0x43ff_ffff is only for the special CCU0 domain. Thus we should exclude
this region for the default iova region.
Signed-off-by: Anan sun <anan.sun@mediatek.com>
Signed-off-by: Chao Hao <chao.hao@mediatek.com>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
drivers/iommu/mtk_iommu.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index b42fd2535b77..764dc0b93477 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -626,6 +626,35 @@ static int mtk_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
return iommu_fwspec_add_ids(dev, args->args, 1);
}
+static void mtk_iommu_get_resv_regions(struct device *dev,
+ struct list_head *head)
+{
+ struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
+ unsigned int domid = mtk_iommu_get_domain_id(dev, data->plat_data), i;
+ const struct mtk_iommu_iova_region *resv, *curdom;
+ struct iommu_resv_region *region;
+ int prot = IOMMU_WRITE | IOMMU_READ;
+
+ if (domid < 0)
+ return;
+ curdom = data->plat_data->iova_region + domid;
+ for (i = 0; i < data->plat_data->iova_region_nr; i++) {
+ resv = data->plat_data->iova_region + i;
+
+ /* Only reserve when the region is inside the current domain */
+ if (resv->iova_base <= curdom->iova_base ||
+ resv->iova_base + resv->size >= curdom->iova_base + curdom->size)
+ continue;
+
+ region = iommu_alloc_resv_region(resv->iova_base, resv->size,
+ prot, IOMMU_RESV_RESERVED);
+ if (!region)
+ return;
+
+ list_add_tail(®ion->list, head);
+ }
+}
+
static const struct iommu_ops mtk_iommu_ops = {
.domain_alloc = mtk_iommu_domain_alloc,
.domain_free = mtk_iommu_domain_free,
@@ -641,6 +670,8 @@ static const struct iommu_ops mtk_iommu_ops = {
.release_device = mtk_iommu_release_device,
.device_group = mtk_iommu_device_group,
.of_xlate = mtk_iommu_of_xlate,
+ .get_resv_regions = mtk_iommu_get_resv_regions,
+ .put_resv_regions = generic_iommu_put_resv_regions,
.pgsize_bitmap = SZ_4K | SZ_64K | SZ_1M | SZ_16M,
};
--
2.18.0
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next prev parent reply other threads:[~2021-01-11 11:33 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-11 11:18 [PATCH v6 00/33] MT8192 IOMMU support Yong Wu
2021-01-11 11:18 ` [PATCH v6 01/33] dt-bindings: iommu: mediatek: Convert IOMMU to DT schema Yong Wu
2021-01-11 11:18 ` [PATCH v6 02/33] dt-bindings: memory: mediatek: Add a common memory header file Yong Wu
2021-01-11 11:18 ` [PATCH v6 03/33] dt-bindings: memory: mediatek: Extend LARB_NR_MAX to 32 Yong Wu
2021-01-11 11:18 ` [PATCH v6 04/33] dt-bindings: memory: mediatek: Rename header guard for SMI header file Yong Wu
2021-01-11 11:18 ` [PATCH v6 05/33] dt-bindings: mediatek: Add binding for mt8192 IOMMU Yong Wu
2021-01-11 11:18 ` [PATCH v6 06/33] of/device: Move dma_range_map before of_iommu_configure Yong Wu
2021-01-14 19:27 ` Rob Herring
2021-01-15 5:30 ` Yong Wu
2021-01-18 15:49 ` Robin Murphy
2021-01-19 9:13 ` Paul Kocialkowski
2021-01-19 9:20 ` Yong Wu
2021-01-19 9:37 ` Paul Kocialkowski
2021-01-11 11:18 ` [PATCH v6 07/33] iommu: Avoid reallocate default domain for a group Yong Wu
2021-01-26 22:23 ` Will Deacon
2021-01-27 9:39 ` Yong Wu
2021-01-28 21:10 ` Will Deacon
2021-01-28 21:14 ` Will Deacon
2021-01-29 0:03 ` Robin Murphy
2021-01-29 1:52 ` Yong Wu
2021-01-29 8:47 ` Will Deacon
2021-01-11 11:18 ` [PATCH v6 08/33] iommu/mediatek: Use the common mtk-memory-port.h Yong Wu
2021-01-11 11:18 ` [PATCH v6 09/33] iommu/io-pgtable-arm-v7s: Use ias to check the valid iova in unmap Yong Wu
2021-01-11 11:18 ` [PATCH v6 10/33] iommu/io-pgtable-arm-v7s: Extend PA34 for MediaTek Yong Wu
2021-01-11 11:18 ` [PATCH v6 11/33] iommu/io-pgtable-arm-v7s: Clarify LVL_SHIFT/BITS macro Yong Wu
2021-01-11 11:18 ` [PATCH v6 12/33] iommu/io-pgtable-arm-v7s: Add cfg as a param in some macros Yong Wu
2021-01-11 11:18 ` [PATCH v6 13/33] iommu/io-pgtable-arm-v7s: Quad lvl1 pgtable for MediaTek Yong Wu
2021-01-11 11:18 ` [PATCH v6 14/33] iommu/mediatek: Add a flag for iova 34bits case Yong Wu
2021-01-11 11:18 ` [PATCH v6 15/33] iommu/mediatek: Update oas for v7s Yong Wu
2021-01-11 11:18 ` [PATCH v6 16/33] iommu/mediatek: Move hw_init into attach_device Yong Wu
2021-01-11 11:18 ` [PATCH v6 17/33] iommu/mediatek: Add error handle for mtk_iommu_probe Yong Wu
2021-01-11 11:18 ` [PATCH v6 18/33] iommu/mediatek: Add device link for smi-common and m4u Yong Wu
2021-01-11 11:19 ` [PATCH v6 19/33] iommu/mediatek: Add pm runtime callback Yong Wu
2021-01-11 11:19 ` [PATCH v6 20/33] iommu/mediatek: Add power-domain operation Yong Wu
2021-01-11 11:19 ` [PATCH v6 21/33] iommu/mediatek: Support up to 34bit iova in tlb flush Yong Wu
2021-01-11 11:19 ` [PATCH v6 22/33] iommu/mediatek: Support report iova 34bit translation fault in ISR Yong Wu
2021-01-11 11:19 ` [PATCH v6 23/33] iommu/mediatek: Adjust the structure Yong Wu
2021-01-11 11:19 ` [PATCH v6 24/33] iommu/mediatek: Move domain_finalise into attach_device Yong Wu
2021-01-11 11:19 ` [PATCH v6 25/33] iommu/mediatek: Move geometry.aperture updating into domain_finalise Yong Wu
2021-01-11 11:19 ` [PATCH v6 26/33] iommu/mediatek: Add iova_region structure Yong Wu
2021-01-11 11:19 ` [PATCH v6 27/33] iommu/mediatek: Add get_domain_id from dev->dma_range_map Yong Wu
2021-01-11 11:19 ` [PATCH v6 28/33] iommu/mediatek: Support for multi domains Yong Wu
2021-01-11 11:19 ` Yong Wu [this message]
2021-01-11 11:19 ` [PATCH v6 30/33] iommu/mediatek: Support master use iova over 32bit Yong Wu
2021-01-11 11:19 ` [PATCH v6 31/33] iommu/mediatek: Remove unnecessary check in attach_device Yong Wu
2021-01-11 11:19 ` [PATCH v6 32/33] iommu/mediatek: Add mt8192 support Yong Wu
2021-01-11 11:19 ` [PATCH v6 33/33] MAINTAINERS: Add entry for MediaTek IOMMU Yong Wu
2021-01-26 22:25 ` [PATCH v6 00/33] MT8192 IOMMU support Will Deacon
2021-01-29 11:27 ` Tomasz Figa
2021-02-01 14:54 ` Will Deacon
2021-02-02 2:03 ` Yong Wu
2021-02-02 13:33 ` Will Deacon
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