From: Thierry Reding <thierry.reding@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Joerg Roedel <joro@8bytes.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Cc: iommu@lists.linux-foundation.org,
Jon Hunter <jonathanh@nvidia.com>,
Nicolin Chen <nicolinc@nvidia.com>,
linux-tegra@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 03/10] iommu/arm-smmu: Implement ->probe_finalize()
Date: Tue, 20 Apr 2021 19:26:12 +0200 [thread overview]
Message-ID: <20210420172619.3782831-4-thierry.reding@gmail.com> (raw)
In-Reply-To: <20210420172619.3782831-1-thierry.reding@gmail.com>
From: Thierry Reding <treding@nvidia.com>
Implement a ->probe_finalize() callback that can be used by vendor
implementations to perform extra programming necessary after devices
have been attached to the SMMU.
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
Changes in v2:
-remove unnecessarily paranoid check
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 13 +++++++++++++
drivers/iommu/arm/arm-smmu/arm-smmu.h | 1 +
2 files changed, 14 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index 6f72c4d208ca..d20ce4d57df2 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c
@@ -1450,6 +1450,18 @@ static void arm_smmu_release_device(struct device *dev)
iommu_fwspec_free(dev);
}
+static void arm_smmu_probe_finalize(struct device *dev)
+{
+ struct arm_smmu_master_cfg *cfg;
+ struct arm_smmu_device *smmu;
+
+ cfg = dev_iommu_priv_get(dev);
+ smmu = cfg->smmu;
+
+ if (smmu->impl->probe_finalize)
+ smmu->impl->probe_finalize(smmu, dev);
+}
+
static struct iommu_group *arm_smmu_device_group(struct device *dev)
{
struct arm_smmu_master_cfg *cfg = dev_iommu_priv_get(dev);
@@ -1569,6 +1581,7 @@ static struct iommu_ops arm_smmu_ops = {
.iova_to_phys = arm_smmu_iova_to_phys,
.probe_device = arm_smmu_probe_device,
.release_device = arm_smmu_release_device,
+ .probe_finalize = arm_smmu_probe_finalize,
.device_group = arm_smmu_device_group,
.enable_nesting = arm_smmu_enable_nesting,
.set_pgtable_quirks = arm_smmu_set_pgtable_quirks,
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.h b/drivers/iommu/arm/arm-smmu/arm-smmu.h
index c31a59d35c64..147c95e7c59c 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.h
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.h
@@ -439,6 +439,7 @@ struct arm_smmu_impl {
struct device *dev, int start);
void (*write_s2cr)(struct arm_smmu_device *smmu, int idx);
void (*write_sctlr)(struct arm_smmu_device *smmu, int idx, u32 reg);
+ void (*probe_finalize)(struct arm_smmu_device *smmu, struct device *dev);
};
#define INVALID_SMENDX -1
--
2.30.2
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next prev parent reply other threads:[~2021-04-20 17:29 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-20 17:26 [PATCH v2 00/10] arm64: tegra: Prevent early SMMU faults Thierry Reding
2021-04-20 17:26 ` [PATCH v2 01/10] memory: tegra: Implement SID override programming Thierry Reding
2021-04-26 8:28 ` Krzysztof Kozlowski
2021-04-26 12:13 ` Thierry Reding
2021-04-26 14:10 ` Krzysztof Kozlowski
2021-04-20 17:26 ` [PATCH v2 02/10] dt-bindings: arm-smmu: Add Tegra186 compatible string Thierry Reding
2021-04-20 17:26 ` Thierry Reding [this message]
2021-04-20 17:26 ` [PATCH v2 04/10] iommu/arm-smmu: tegra: Detect number of instances at runtime Thierry Reding
2021-04-20 22:06 ` Krishna Reddy
2021-04-20 17:26 ` [PATCH v2 05/10] iommu/arm-smmu: tegra: Implement SID override programming Thierry Reding
2021-04-20 17:26 ` [PATCH v2 06/10] iommu/arm-smmu: Use Tegra implementation on Tegra186 Thierry Reding
2021-04-20 17:26 ` [PATCH v2 07/10] arm64: tegra: Use correct compatible string for Tegra186 SMMU Thierry Reding
2021-04-20 17:26 ` [PATCH v2 08/10] arm64: tegra: Hook up memory controller to SMMU on Tegra186 Thierry Reding
2021-04-20 17:26 ` [PATCH v2 09/10] arm64: tegra: Enable SMMU support on Tegra194 Thierry Reding
2021-04-20 17:26 ` [PATCH v2 10/10] arm64: tegra: Enable SMMU support for display " Thierry Reding
2021-05-28 17:05 ` [PATCH v2 00/10] arm64: tegra: Prevent early SMMU faults Thierry Reding
2021-06-01 12:26 ` Will Deacon
2021-06-01 18:08 ` Thierry Reding
2021-06-02 7:33 ` Krzysztof Kozlowski
2021-06-02 7:35 ` Krzysztof Kozlowski
2021-06-02 8:52 ` Thierry Reding
2021-06-02 10:44 ` Krzysztof Kozlowski
2021-06-02 11:40 ` Will Deacon
2021-06-02 14:58 ` Thierry Reding
2021-06-02 14:58 ` Krzysztof Kozlowski
2021-06-02 14:53 ` Thierry Reding
2021-06-02 14:57 ` Krzysztof Kozlowski
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