82598EB Datasheet, PDF (283/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - DCA
The software device driver selects one of these modes through the DCA_mode register.
Both modes are described in the sections that follow.
3.5.6.2 PCIe Message Format for DCA (MWr Mode)
Figure 3-41 shows the format of the PCIe message for DCA.
Figure 3-41. PCIe Message Format for DCA
The DCA preferences field has the following formats.
For FSB chipset:
Bits
0
4:1
Name
DCA indication
DCA Target ID
For CSI chipset:
Bits
4:0
DCA target ID
Name
Description
0b = DCA disabled
1b = DCA enabled
The DCA Target ID specifies the target cache for
the data.
Description
11111b: DCA is disabled
Other: Target Core ID derived from APIC ID.
The method for this is described in the DCA
Platform Architecture Specification.
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