iommu: Print default domain type on boot
Introduce a subsys_initcall for IOMMU code and use it to print the default domain type at boot. Signed-off-by: Joerg Roedel <jroedel@suse.de>
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@ -93,12 +93,40 @@ struct iommu_group_attribute iommu_group_attr_##_name = \
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static LIST_HEAD(iommu_device_list);
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static DEFINE_SPINLOCK(iommu_device_lock);
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/*
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* Use a function instead of an array here because the domain-type is a
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* bit-field, so an array would waste memory.
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*/
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static const char *iommu_domain_type_str(unsigned int t)
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{
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switch (t) {
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case IOMMU_DOMAIN_BLOCKED:
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return "Blocked";
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case IOMMU_DOMAIN_IDENTITY:
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return "Passthrough";
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case IOMMU_DOMAIN_UNMANAGED:
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return "Unmanaged";
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case IOMMU_DOMAIN_DMA:
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return "Translated";
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default:
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return "Unknown";
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}
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}
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static int __init iommu_subsys_init(void)
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{
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pr_info("Default domain type: %s\n",
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iommu_domain_type_str(iommu_def_domain_type));
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return 0;
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}
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subsys_initcall(iommu_subsys_init);
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int iommu_device_register(struct iommu_device *iommu)
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{
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spin_lock(&iommu_device_lock);
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list_add_tail(&iommu->list, &iommu_device_list);
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spin_unlock(&iommu_device_lock);
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return 0;
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}
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