Intel E5-2600 RdIAMSR Response Definition, RdIAMSR Capabilities, RdIAMSR Services Summary Sheet 1

2.5.2.7.3Supported 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.

Table 2-10. RdIAMSR() Response Definition

Response	Meaning
Bad FCS	Electrical error
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.

2.5.2.7.4RdIAMSR() Capabilities

The processor PECI client allows PECI RdIAMSR() access to the registers listed in Table 2-11. These registers pertain to the processor core and uncore error banks (machine check banks 0 through 19). Information on the exact number of accessible banks for the processor device may be obtained by reading the IA32_MCG_CAP[7:0] MSR (0x0179). This register may be alternatively read using a RDMSR BIOS instruction. Please consult the Intel® 64 and IA-32 Architectures Software Developer’s Manual (SDM) Volumes 1, 2, and 3 for more information on the exact number of cores supported by a particular processor SKU. Any attempt to read processor MSRs that are not accessible over PECI or simply not implemented will result in a completion code of 0x90.

PECI access to these registers is expected only when in-band access mechanisms are not available.

Table 2-11. RdIAMSR() Services Summary (Sheet 1 of 2)

Process	MSR	Meaning	Process	MSR	Meaning	Proces	MSR	Meaning
or ID	Address		or ID	Address		sor ID	Address
(byte)	(dword)		(byte)	(dword)		(byte)	(dword)
0x0-0xF	0x0400	IA32_MC0_CTL	0x0-0xF	0x041B	IA32_MC6_MISC	0x0-0xF	0x0436	IA32_MC13_ADDR
0x0-0xF	0x0280	IA32_MC0_CTL2	0x0-0xF	0x041C	IA32_MC7_CTL	0x0-0xF	0x0437	IA32_MC13_MISC
0x0-0xF	0x0401	IA32_MC0_STATUS	0x0-0xF	0x0287	IA32_MC7_CTL2	0x0-0xF	0x0438	IA32_MC14_CTL
0x0-0xF	0x0402	IA32_MC0_ADDR	0x0-0xF	0x041D	IA32_MC7_STATUS	0x0-0xF	0x028E	IA32_MC14_CTL2
0x0-0xF	0x0403	IA32_MC0_MISC1	0x0-0xF	0x041E	IA32_MC7_ADDR	0x0-0xF	0x0439	IA32_MC14_STATUS
0x0-0xF	0x0404	IA32_MC1_CTL	0x0-0xF	0x041F	IA32_MC7_MISC	0x0-0xF	0x043A	IA32_MC14_ADDR
0x0-0xF	0x0281	IA32_MC1_CTL2	0x0-0xF	0x0420	IA32_MC8_CTL	0x0-0xF	0x043B	IA32_MC14_MISC
0x0-0xF	0x0405	IA32_MC1_STATUS	0x0-0xF	0x0288	IA32_MC8_CTL2	0x0-0xF	0x043C	IA32_MC15_CTL
0x0-0xF	0x0406	IA32_MC1_ADDR	0x0-0xF	0x0421	IA32_MC8_STATUS	0x0-0xF	0x028F	IA32_MC15_CTL2
0x0-0xF	0x0407	IA32_MC1_MISC	0x0-0xF	0x0422	IA32_MC8_ADDR	0x0-0xF	0x043D	IA32_MC15_STATUS
0x0-0xF	0x0408	IA32_MC2_CTL2	0x0-0xF	0x0423	IA32_MC8_MISC	0x0-0xF	0x043E	IA32_MC15_ADDR
62				Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families
							Datasheet Volume One