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Direct Cache Access: Difference between revisions
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I've got a list of [[Hardware detritus#NICs|DCA-enabled NICs]]. | I've got a list of [[Hardware detritus#NICs|DCA-enabled NICs]]. | ||
DCA requires both hardware and software support. Its successor, [[DDIO]], does not. | |||
==See Also== | ==See Also== | ||
*[http://www.stanford.edu/group/comparch/papers/huggahalli05.pdf "Direct Cache Access for High Bandwidth Network I/O"] | *[http://www.stanford.edu/group/comparch/papers/huggahalli05.pdf "Direct Cache Access for High Bandwidth Network I/O"] | ||
Latest revision as of 01:06, 22 January 2023
From Intel Application Note 485, "Intel Processor Identification and the CPUID Instruction", section 3.1.10:
When EAX is initialized to a value of 9, the CPUID instruction returns DCA information in the EAX, EBX, ECX and EDX registers:
- EAX: Value of PLATFORM_DCA_CAP MSR Bits [31:0] (Offset 1F8h)
- EBX: Reserved
- ECX: Reserved
- EDX: Reserved
I've got a list of DCA-enabled NICs.
DCA requires both hardware and software support. Its successor, DDIO, does not.
