Intel CM8062101038606, E5-4600 WrPCIConfigLocal Response Definition, Cmd Code, 0xe5, Completion

Figure 2-48. WrPCIConfigLocal()

Byte #	0				1		2		3
Byte	Client Address			Write Length			Read Length		Cmd Code
				{0x07, 0x08, 0x0a}				0x01		0xe5
Definition
			4			5	6				7
		Host ID[7:1] &				LSB	PCI Configuration Address				MSB
			Retry[0]
			8			9	10				11
		LSB				Data (1, 2 or 4 bytes)						MSB
			12			13	14				15
			AW FCS			FCS		Completion			FCS
								Code

Note: The 3-byte PCI configuration address and write data field defined in Figure 2-48are sent in standard PECI ordering with LSB first and MSB last.

2.5.2.10.2Supported Responses

The typical client response is a passing FCS, a passing Completion Code and valid data. Under some conditions, the client’s response will indicate a failure.

The PECI client response can also vary depending on the address and data. It will respond with a passing completion code if it successfully submits the request to the appropriate location and gets a response.

Table 2-14. WrPCIConfigLocal() Response Definition

Response	Meaning
Bad FCS	Electrical error or AW FCS failure
Abort FCS	Illegal command formatting (mismatched RL/WL/Command Code)
CC: 0x40	Command passed, data is valid.
CC: 0x80	Response timeout. The processor was not able to generate the required response in a timely
	fashion. Retry is appropriate.
CC: 0x81	Response timeout. The processor is not able to allocate resources for servicing this command
	at this time. Retry is appropriate.
CC: 0x82	The processor hardware resources required to service this command are in a low power
	state. Retry may be appropriate after modification of PECI wake mode behavior if
	appropriate.
CC: 0x90	Unknown/Invalid/Illegal Request
CC: 0x91	PECI control hardware, firmware or associated logic error. The processor is unable to process
	the request.

68	Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families
	Datasheet Volume One