如果Port口将AmicOp Egress Blocking使能,则在其收到待转发的AtomicOp Request请求时,将提前结束这个请求,并给请求者回复UR completion。 [25] TLP Prefix Blocked Error Status (Optional) 如果Port口将End-End TLP Prefix Blocking使能,则在其收到带Prefix的TLP时,将提前结束这个请求,并给请求者回复UR completion(...
implicit routing: is used only with Message request. completion timeout机制: 所有的需要completion的request都有completion timeout机制,除了configuration request. completion timeout limit由Device Control 2寄存器中的Completion Timeout Value设置。 TLP digest指的是TLP中的ECRC,当TD=1,表明该TLP包含ECRC,否则没...
1.6Completion Timeout 如果设备发送的报文需要对端返回completion,比如memory read,且在completion timeout limit时间内没有收到对应的completion,需要上报Completion Timeout error。 1.7Completer Abort(CA) 如果设备收到的请求和device function的programming model(programming model应该是function一些配置,包括page size和fu...
1. Completer Sending a Completion with UR/CA Status 2. Intermediate Receive 3. Ultimate PCIExpress Receiver of a Poisoned TLP 4. Requester with completion timeout 5. Receiver of an unexpected completion 3.3错误转发(Data poisoning) 一旦出现这种情况TLP的EP位被置1,TLP整个路由流程中的接收者都将报告...
While the PCIe Hard IP is supportive to the application in discarding completions with »a tag that does not match an outstanding request« (PCIe UG 9.1 SP1, Table 4–36, ‘Unexpected Completion’), the application has to maintain completion timeout on its own (same table, ‘Completion ...
2022.02.10 - Completion timeout 机制是什么? PCIe设备发出的请求中有些请求需要Completer反馈Completion,此时Requester会等待Completion再进行下一步操作。在某些异常情况下,比如配置不当、系统故障等,Requeser无法收到Completion。为了不影响进一步使用,需要一种超时退出机制让Requester从这种等待状态恢复过来,这就是超时退出...
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR-, OBFF Not Supported ARIFwd- DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled ARIFwd- LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis- ...
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR-, OBFF Not Supported ARIFwd- DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled ARIFwd- LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis- ...
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR+, OBFF Not Supported DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis- Transmit Margin: Normal Operating Range, EnterModifiedCompliance- Comp...
Polling Device Status Register [5] – Transactions Pending bit直到被Clear – 代表没有未完成的CplD,或者等待到Completion Timeout 的时间,如果Completion Timeout没有被Enable,等100ms 初始化FLR然后等100ms 重新配置Function并Enable 在FLR过程中: 这个Function对外不能被使用 ...