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From: Alexandre Bailon <abailon@baylibre.com>
To: yong.wu@mediatek.com, joro@8bytes.org, will@kernel.org
Cc: robin.murphy@arm.com, matthias.bgg@gmail.com,
	krzysztof.kozlowski@linaro.org, robh+dt@kernel.org,
	iommu@lists.linux.dev, linux-mediatek@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	Alexandre Bailon <abailon@baylibre.com>
Subject: [PATCH 2/3] iommu: mediatek: Add support of unmanaged iommu domain
Date: Mon, 30 Jan 2023 11:27:21 +0100	[thread overview]
Message-ID: <20230130102722.133271-3-abailon@baylibre.com> (raw)
In-Reply-To: <20230130102722.133271-1-abailon@baylibre.com>

Currently, the driver can allocate an unmanaged iommu domain.
But, this only works for SoC having multiple bank or multiple iova region.
This updates the driver to also support unmanaged iommu domain if
MTK_UNMANAGED_DEVICE is set in the iommu id.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
---
 drivers/iommu/mtk_iommu.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 2badd6acfb23d..5884a1ad409a0 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -858,9 +858,15 @@ static int mtk_iommu_get_group_id(struct device *dev, const struct mtk_iommu_pla
 static struct iommu_group *mtk_iommu_device_group(struct device *dev)
 {
 	struct mtk_iommu_data *c_data = dev_iommu_priv_get(dev), *data;
+	struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
 	struct list_head *hw_list = c_data->hw_list;
 	struct iommu_group *group;
 	int groupid;
+	int i;
+
+	for (i = 0; i < fwspec->num_ids; i++)
+		if (MTK_M4U_UNMANAGED(fwspec->ids[i]))
+			return iommu_group_alloc();
 
 	data = mtk_iommu_get_frst_data(hw_list);
 	if (!data)
-- 
2.38.2


WARNING: multiple messages have this Message-ID (diff)
From: Alexandre Bailon <abailon@baylibre.com>
To: yong.wu@mediatek.com, joro@8bytes.org, will@kernel.org
Cc: robin.murphy@arm.com, matthias.bgg@gmail.com,
	krzysztof.kozlowski@linaro.org, robh+dt@kernel.org,
	iommu@lists.linux.dev, linux-mediatek@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	Alexandre Bailon <abailon@baylibre.com>
Subject: [PATCH 2/3] iommu: mediatek: Add support of unmanaged iommu domain
Date: Mon, 30 Jan 2023 11:27:21 +0100	[thread overview]
Message-ID: <20230130102722.133271-3-abailon@baylibre.com> (raw)
In-Reply-To: <20230130102722.133271-1-abailon@baylibre.com>

Currently, the driver can allocate an unmanaged iommu domain.
But, this only works for SoC having multiple bank or multiple iova region.
This updates the driver to also support unmanaged iommu domain if
MTK_UNMANAGED_DEVICE is set in the iommu id.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
---
 drivers/iommu/mtk_iommu.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 2badd6acfb23d..5884a1ad409a0 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -858,9 +858,15 @@ static int mtk_iommu_get_group_id(struct device *dev, const struct mtk_iommu_pla
 static struct iommu_group *mtk_iommu_device_group(struct device *dev)
 {
 	struct mtk_iommu_data *c_data = dev_iommu_priv_get(dev), *data;
+	struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
 	struct list_head *hw_list = c_data->hw_list;
 	struct iommu_group *group;
 	int groupid;
+	int i;
+
+	for (i = 0; i < fwspec->num_ids; i++)
+		if (MTK_M4U_UNMANAGED(fwspec->ids[i]))
+			return iommu_group_alloc();
 
 	data = mtk_iommu_get_frst_data(hw_list);
 	if (!data)
-- 
2.38.2


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  parent reply	other threads:[~2023-01-30 10:26 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-30 10:27 [PATCH 0/3] Add support of unmanaged domain to mediatek IOMMU Alexandre Bailon
2023-01-30 10:27 ` Alexandre Bailon
2023-01-30 10:27 ` [PATCH 1/3] dt-bindings: memory: mediatek: Add support of unmanaged iommu domain Alexandre Bailon
2023-01-30 10:27   ` Alexandre Bailon
2023-01-30 11:57   ` Alexandre Mergnat
2023-01-30 11:57     ` Alexandre Mergnat
2023-01-30 11:58   ` Robin Murphy
2023-01-30 11:58     ` Robin Murphy
2023-01-30 10:27 ` Alexandre Bailon [this message]
2023-01-30 10:27   ` [PATCH 2/3] iommu: " Alexandre Bailon
2023-01-30 12:04   ` Alexandre Mergnat
2023-01-30 12:04     ` Alexandre Mergnat
2023-01-30 12:04   ` Robin Murphy
2023-01-30 12:04     ` Robin Murphy
2023-01-31 13:08     ` Alexandre Bailon
2023-01-31 13:08       ` Alexandre Bailon
2023-01-31 14:15       ` Robin Murphy
2023-01-31 14:15         ` Robin Murphy
2023-01-31 15:31         ` Alexandre Bailon
2023-01-31 15:31           ` Alexandre Bailon
2023-02-14  5:48           ` Yong Wu (吴勇)
2023-02-14  5:48             ` Yong Wu (吴勇)
2023-09-14  8:07             ` Alexandre Bailon
2023-09-14  8:07               ` Alexandre Bailon
2023-09-14 14:19               ` Robin Murphy
2023-09-14 14:19                 ` Robin Murphy
2023-01-30 10:27 ` [PATCH 3/3] dt-bindings: iommu: memory: Use unmanaged iommu domain for the APU Alexandre Bailon
2023-01-30 10:27   ` Alexandre Bailon
2023-01-30 12:04   ` Alexandre Mergnat
2023-01-30 12:04     ` Alexandre Mergnat
2023-01-30 22:50   ` Rob Herring
2023-01-30 22:50     ` Rob Herring

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