发明名称 |
Mechanism to guarantee forward progress for incoming coherent input/output (I/O) transactions for caching I/O agent on address conflict with processor transactions |
摘要 |
A forwarding device compares a first address from a first coherent input/output (I/O) transaction with an address from at least one processor-issued transaction to determine if an address conflict exists. The forwarding device completes a first processor-issued transaction of the at least one processor-issued transaction if the address conflict exists and rejects the first coherent I/O transaction. The forwarding device holds remaining processor transactions of the at least one processor-issued transaction that have an address conflict with the first address of the first coherent I/O transaction. The forwarding device transmits the first coherent I/O transaction to an external I/O device, waits for the first coherent I/O transaction to return from the external I/O device, and completes the first coherent I/O transaction. The forwarding device releases the remaining processor transactions once the first coherent I/O transaction has been completed.
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申请公布号 |
US2005060502(A1) |
申请公布日期 |
2005.03.17 |
申请号 |
US20040970015 |
申请日期 |
2004.10.21 |
申请人 |
TAN SIN S.;KULICK STANLEY S.;PAMUJULA RAJESH S. |
发明人 |
TAN SIN S.;KULICK STANLEY S.;PAMUJULA RAJESH S. |
分类号 |
G06F3/00;G06F12/00;G06F12/08;(IPC1-7):G06F12/00 |
主分类号 |
G06F3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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