Method and system maintaining quality of service (QoS) of host commands in multi-port, multi-function peripheral component interconnect express (PCIe) devices
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United States of America Patent
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Jan 30, 2018
Grant Date -
Feb 4, 2016
app pub date -
Jul 16, 2015
filing date -
Jul 31, 2014
priority date (Note) -
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Abstract
A method maintaining a fixed QoS for a PCIe device accessed by multiple hosts includes; receiving commands from the hosts in PCIe function queues of the PCIe device, fetching the commands from the PCIe function command queues, queuing the commands according to a command arbitration policy established for the PCIe device, storing the queued commands in an internal memory of the PCIe device, retrieving the queued commands from the internal memory in a sequence determined by applying a calculated QoS to at least one of the queued commands, and allocating PCIe device resources based on payload information corresponding to each one of the retrieved commands.
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