| config MTK_IOMMU_MISC |
| tristate "misc iommu driver for enhanced feature" |
| depends on DEVICE_MODULES_MTK_IOMMU |
| help |
| Choose this option to enable mediatek misc iommu driver. |
| Misc iommu includes the enhanced features about iommu hardware. |
| For example, it can implement iommu secure driver for secure |
| feature or debug feature. |
| |
| config MTK_IOMMU_MISC_DBG |
| tristate "Enable Mediatek IOMMU debug feature" |
| depends on MTK_IOMMU_MISC |
| help |
| Choose this option to enable mediatek iommu debug driver. |
| According to the characteristic of hardware, we need to add |
| some debug information. For example translation fault, hardware |
| dump information and so on. In addition, for ion buffer, we can |
| use dma_buf information to monitor iova, but if user use |
| "dma_alloc_attrs" to allocate buffer, we can not monitor iova. |
| So we can use list to save all iova node and dump it. |
| |
| config MTK_IOMMU_MISC_SECURE |
| tristate "Enable Mediatek IOMMU secure feature" |
| depends on MTK_IOMMU_MISC |
| help |
| Choose this option to enable mediatek iommu secure driver. IOMMU |
| also can support transaction besides supporting normal transaction. |
| In iommu secure driver, we can implement IOMMU secure driver |
| initialization for MTEE and other requirements for secure mapping. |
| In addition, we also run iommu protected banks(bank1~bank3) probe |
| and link with mtk_iommu. |
| |
| config MTK_IOMMU_MISC_TEST |
| tristate "Enable Mediatek IOMMU test feature" |
| depends on MTK_IOMMU_MISC |
| help |
| Choose this option to enable mediatek iommu test driver. |
| The feature tests mtk iommu driver software flow whether it is |
| normal work. For example, reserve iova region test, create page |
| table test, allocation iova by iommu framework test, allocation |
| iova by dma-buf framework test and so on. We can need to ensure |
| MTK iommu driver is available before iommu's masters use it by |
| iommu test. |
| |
| config MTK_IOMMU_DEBUG |
| bool "Debugging log for Mediatek IOMMU" |
| help |
| Select this to see the detailed log message that shows what |
| happens in the IOMMU driver. |
| If unsure, say N. |
