1.14 Flow Control Protocol Error 根据协议,receiver可以在两种场景下检查并置起Flow Control Protocol Error(FCPE): 1. 收到的update FC的credits超过了不同scaled flow control下定义的max credits,max credits如下表所示: 2. 收到的update FC的HdrScale和DataScale域段,和Init FC时的值不相同。 1.15 Malformed...
· DLLP中的16-bit CRC校检失败 · 链路层协议错误(Link Layer Protocol Errors) 事务层错误(Transaction Layer Errors)主要有: · ERCR校检失败(可选的) · 异常的TLP(Malformed TLP)(即TLP的格式异常) · 流量控制协议异常(Flow Control Protocol Violation) · 不支持的请求 · 数据损坏(Data Corruption,又...
· DLLP中的16-bit CRC校检失败 · 链路层协议错误(Link Layer Protocol Errors) 事务层错误(Transaction Layer Errors)主要有: · ERCR校检失败(可选的) · 异常的TLP(Malformed TLP)(即TLP的格式异常) · 流量控制协议异常(Flow Control Protocol Violation) · 不支持的请求 · 数据损坏(Data Corruption,又...
· DLLP中的16-bit CRC校检失败 · 链路层协议错误(Link Layer Protocol Errors) 事务层错误(Transaction Layer Errors)主要有: · ERCR校检失败(可选的) · 异常的TLP(Malformed TLP)(即TLP的格式异常) · 流量控制协议异常(Flow Control Protocol Violation) · 不支持的请求 · 数据损坏(Data Corruption,又...
本章讨论 Flow Control Protocol 的用途和详细操作。FC旨在确保Transmitters永远不会发送Receiver Buffer无法接受的传输层Data包 (TLP)。这可以防止rx Buffer溢出,并消除对 PCI 式低效率(如 disconnects、重试和等待状态)的需求。 6.1流控概念 每个PCIe Link 两端的端口都必须实现 Flow Control。在传输Data包之前,Flow...
· 流量控制协议异常(Flow Control Protocol Violation) · 不支持的请求 · 数据损坏(Data Corruption,又称为Poisoned Packet) · Completer Abort(可选的) · 接收端溢出(Receiver Overflow)(可选的) · 返回包超时(Completion Timeout) · 不对应的返回包(Unexpected Completion,即Completion与发出的Request不一致...
%1 PCIe Switch %2 occurs uncorrectable error :%3 %3 example values Bit X Description 4 Data Link Protocol Error 5 Surprise Down Error 13 Flow control Protocol Error 17 Receiver Overflow 18 Malformed TLP 22 Uncorrectable Internal Error 23 MC Blocked TLP 24 Atomic Ope...
%1 PCIe Switch %2 occurs uncorrectable error :%3 %3 example values Bit X Description 4 Data Link Protocol Error 5 Surprise Down Error 13 Flow control Protocol Error 17 Receiver Overflow 18 Malformed TLP 22 Uncorrectable Internal Error 23 ...
write to set bit LTSSM_EN, this should force link to re-training again. Read to the Debug 0 register, did indicate the link came up, but again, was not able do configuration read/write the PCI EP device, the PCIE_UNCERR register has FCP_ERR_ST bit set, flow control pro...
• The timeout flow control mechanism must be disabled if an Infinite Credit advertisement has been made during initialization for P, NP and Cpl flow control classes. • InitFC1 and InitFC2 DLLPs must be transmitted in the order InitFC for P, NP, then Cpl. ...