Method and apparatus for signaling an error condition to an agent not expecting a completion
First Claim
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1. An apparatus, comprising:
- a data path input unit to receive a packet from a transmitting device for a request transaction that does not expect a completion; and
a data path output unit to transmit a message to the transmitting device if the request transaction is unsuccessful.
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Abstract
A transmitting device and a receiving device are coupled via a high-speed serial interface within a computer system. The transmitting device transmits a packet for a request transaction to a receiving device. The receiving device checks for error conditions. If an error condition exists and if the packet for the request transaction indicates that a completion is not expected by the transmitting device, an error message is delivered by the receiving device to the transmitting device.
39 Citations
17 Claims
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1. An apparatus, comprising:
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a data path input unit to receive a packet from a transmitting device for a request transaction that does not expect a completion; and
a data path output unit to transmit a message to the transmitting device if the request transaction is unsuccessful. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system, comprising:
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a transmitting device to transmit a packet for a request transaction that does not expect a completion; and
a receiving device to receive the packet and to return a message to the transmitting device if the request transaction is unsuccessful. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method, comprising:
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receiving a request packet from a transmitting device;
determining whether an error condition exists; and
if an error condition exists and the request packet indicates that a completion is not expected, delivering an error message to the transmitting device. - View Dependent Claims (14, 15, 16, 17)
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Specification