February 2003
Intermediate to advanced
592 pages
11h 47m
English
Content preview from HyperTransport™ System ArchitectureBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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The Ordering Rules
HyperTransport packet ordering rules are divided into groups: general rules, rules for upstream I/O ordering, and rules for downstream ordering. Even the peer-to-peer example in Figure 6-1 on page 121 can be broken into two parts: the request moving to the bridge (covered by upstream ordering rules) and the reflection of the request downstream to the peer-to-peer target (covered by downstream I/O ordering rules). Refer to Chapter 20, entitled "I/O Compatibility," on page 457 for a discussion of ordering when packets move between HyperTransport and another protocol (PCI, PCI-X, or AGP).
General I/O Ordering Limits
Ordering Covers Targets At Same Hierarchy Level
Ordering rules only apply to the order in which operations are detected ...
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