NVMe初始化代码研究---队列清空
1. Set the targeted Function ID to QARB_FUNC_ID (R15014030h [7:0]).
2. Set the corresponding arbitration configuration, which is indicated by the Set Feature
command, to QARB_ARB_INFO (R15014034h [31:0]).
3. Wait for QARB_ARB_INFO_DONE (R15014038h [0]).