Регистры H616: IOMMU TLB Invalidation Address Register

IOMMU_TLB_IVLD_ADDR_REG

3.12.5. IOMMU TLB Invalidation Address Register - адрес: 0x30f0090 (смещение: 0x0090)

Модуль управления памятью ввода-вывода IOMMU: список регистров

31 |•|•|•|•|•|•|•|•|•|•|•|•|•|•|•|•| 16
15 |•|•|•|•|•|•|•|•|•|•|•|•|•|•|•|•| 00

TLB_IVLD_ADDR

Bits 31 : 12
R/W
0x0

TLB invalid address, 4KB aligned.

Operation:
1) Set the virtual address which needs to be operated in IOMMU_TLB_IVLD_ADDR_REG.
2) Set the mask of virtual address which needs to be operated in IOMMU_TLB_IVLD_ADDR_MASK_REG.
3) Write 1 to IOMMU_TLB_IVLD_ENABLE_REG[0].
4) Read IOMMU_TLB_IVLD_ENABLE_REG[0], when it is ‘0’, it indicates that invalidation behavior is finished.

Note
When performing invalidation operation, TLB/Cache operation has not affected.
After or Before invalidation starts, there is no absolute relationship between same address switch operation and Invalidation operation.

Unused

Bits 11 : 0

Bit fields structure

typedef union iommu_tlb_ivld_addr_reg { struct { unsigned unused0 : 12; unsigned tlb_ivld_addr : 20; } b; unsigned long w; } IOMMU_TLB_IVLD_ADDR_REG