[13] Flow Control Protocol Error Status (Optional) 接收端一段时间未收到更新Credit的报文或更新Credit超过限制。 [14] Completion Timeout Status 一个经常碰到的错误。请求端发出的Non-post请求(cfg read与memory read)在规定时间内未收到完成报文。可通过修改请求端的Device Capabilities 2 Register寄存器来调整...
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。 1.15Malformed ...
这会导致过渡到 DL_Init 子状态,该子状态包含两个处理Flow Control初始化的阶段:FC_INIT1和FC_INIT2。 6.4.3 FC_Init1详细信息 在FC_INIT1 状态下,设备会连续发送 3 个 InitFC1 Flow Control DLLP 序列,通告其Receiver Buffer Buffer大小(参见图 6-5)。根据规范,Data包必须按以下顺序发送:Posted、Non-po...
· 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...
For more details, please refer to Specifications section 2.6.1 Flow Control (FC) Rules. Summary In summary, PCIe 6.0 is a complex protocol with many verification challenges. You must understand many new Spec changes and think about the robust verification plan for the new features and backward...
NET: Registered protocol family 16 omap_voltage_domain_lookup: Voltage driver init not yet happened.Faulting! omap_voltage_add_dev: VDD specified does not exist! OMAP GPIO hardware version 0.1 OMAP GPIO hardware version 0.1 omap_mux_init: Add partition: #1: core, flags: 0 ...
· 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...
Advanced error reporting (AER) to assist in fault isolation and root cause analysis Transaction Layer Tag Scaling, Interrupts (MSI, MSI-X, INTx) Data Link Layer Virtual Channel, Flow Control Credit (FCC), Ack\Nak Physical Layer · Equalization procedure support, error injection, and checks ·...
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 prot...
Flow Control机制对于不同 VC 不保序,但是对同一VC是保序的,MRd 在Flow Control NPR Buffer中按照先入先出的顺序发出。 2022.02.19 - Logic Idle Symbol 与 Idle Symbol (IDL) 是一样的吗?与 EIOS 有何关系? 不一样。 Logic Idle Symbol ,逻辑闲符号数据是 0x00,与 EIOS 没啥特定关系,当链路上临时...