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iommu/arm-smmu-v3: Add acpi_smmu_iort_probe_model for impl

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For model-specific implementation, repurpose the acpi_smmu_get_options()
to a wider acpi_smmu_acpi_probe_model(). A new model can add to the list
in this new function.

Suggested-by: Will Deacon <will@kernel.org>
Change-Id: I6a9912f55cde32a78da1203f1abffc50e59c1438
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Link: https://lore.kernel.org/r/79716299829aeab2e55b8c7932f2634b209bb4d5.1724970714.git.nicolinc@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Ashish Mhetre <amhetre@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/3rdparty/canonical/linux-noble/+/3435433
Reviewed-by: Pritesh Raithatha <praithatha@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Ashish Mhetre
2025-07-02 09:15:30 +00:00
parent 5903705a33
commit 3f925f4d6b
1 changed files with 10 additions and 5 deletions
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drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+10 -5
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@@ -3713,18 +3713,25 @@ static int arm_smmu_device_hw_probe(struct arm_smmu_device *smmu)
}
#ifdef CONFIG_ACPI
static void acpi_smmu_get_options(u32 model, struct arm_smmu_device *smmu)
static int acpi_smmu_iort_probe_model(struct acpi_iort_node *node,
struct arm_smmu_device *smmu)
{
switch (model) {
struct acpi_iort_smmu_v3 *iort_smmu =
(struct acpi_iort_smmu_v3 *)node->node_data;
switch (iort_smmu->model) {
case ACPI_IORT_SMMU_V3_CAVIUM_CN99XX:
smmu->options |= ARM_SMMU_OPT_PAGE0_REGS_ONLY;
break;
case ACPI_IORT_SMMU_V3_HISILICON_HI161X:
smmu->options |= ARM_SMMU_OPT_SKIP_PREFETCH;
break;
case ACPI_IORT_SMMU_V3_GENERIC:
break;
}
dev_notice(smmu->dev, "option mask 0x%x\n", smmu->options);
return 0;
}
static int arm_smmu_device_acpi_probe(struct platform_device *pdev,
@@ -3739,12 +3746,10 @@ static int arm_smmu_device_acpi_probe(struct platform_device *pdev,
/* Retrieve SMMUv3 specific data */
iort_smmu = (struct acpi_iort_smmu_v3 *)node->node_data;
acpi_smmu_get_options(iort_smmu->model, smmu);
if (iort_smmu->flags & ACPI_IORT_SMMU_V3_COHACC_OVERRIDE)
smmu->features |= ARM_SMMU_FEAT_COHERENCY;
return 0;
return acpi_smmu_iort_probe_model(node, smmu);
}
#else
static inline int arm_smmu_device_acpi_probe(struct platform_device *pdev,