RISCV_IOMMU_QUEUE_BUSY
#define RISCV_IOMMU_CQCSR_BUSY RISCV_IOMMU_QUEUE_BUSY
#define RISCV_IOMMU_FQCSR_BUSY RISCV_IOMMU_QUEUE_BUSY
#define RISCV_IOMMU_PQCSR_BUSY RISCV_IOMMU_QUEUE_BUSY
csr, !(csr & RISCV_IOMMU_QUEUE_BUSY),
RISCV_IOMMU_QUEUE_BUSY |
csr, !(csr & RISCV_IOMMU_QUEUE_BUSY),
if (csr & (RISCV_IOMMU_QUEUE_ACTIVE | RISCV_IOMMU_QUEUE_BUSY))