Supporting runtime D3 and buffer flush and fill for a peripheral component interconnect device
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United States of America Patent
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Aug 29, 2017
Grant Date -
May 19, 2016
app pub date -
Jan 25, 2016
filing date -
Dec 26, 2012
priority date (Note) -
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Abstract
Particular embodiments described herein provide for an apparatus that includes a means for determining a power state for a device connected to a system, a means for determining that the device should change power states, and means for sending a signal to the device to put the device in a D3-cold state while the system is a GO/SO state. In an embodiment, the device is a peripheral component interconnect (PCI) device. Also, the particular example implementation can include means for sending a PCIRST# signal from the device to a controller to cause the device to exit the D3-cold state, wherein the PCIRST# signal is received at a pin on the controller that is different than a designated PCIRST# signal pin.
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