32 lines
1.4 KiB
Plaintext
32 lines
1.4 KiB
Plaintext
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config MTK_IOMMU_MISC
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bool "misc iommu driver for secondary feature"
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depends on MTK_IOMMU_V2
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help
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Choose this option to enable mediatek misc iommu driver.
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For common kernel, misc iommu includes the secondary feature
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about m4u hardware. For example, it can implement m4u secure
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driver for secure feature or debug feature.
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config MTK_IOMMU_MISC_SEC
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bool "Enable Mediatek secure M4U"
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depends on MTK_IOMMU_MISC
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depends on TRUSTONIC_TEE_SUPPORT || MICROTRUST_TEE_SUPPORT
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help
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Choose this option to enable mediatek secure iommu driver.
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For SVP or secure camera feature, user only can access
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continuous secure memory, and the number of secure memory's
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bit no more than 32. So the secure memory need to map to mva
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by m4u. Secure m4u driver can map non-physical continuous
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secure memory to continuous modified virtual address.
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config MTK_IOMMU_MISC_DBG
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bool "Enable Mediatek M4U debug feature"
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depends on MTK_IOMMU_MISC
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help
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Choose this option to enable mediatek iommu debug driver.
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According to the characteristic of hardware, we need to add
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some debug information. For example translation fault, hardware
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dump information and so on. In addition, for ion buffer, we can
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use dma_buf information to monitor iova, but if user use
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"dma_alloc_attrs" to allocate buffer, we can not monitor iova.
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So we can use list to save all iova node and dump it.
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