The Modem Host Interface is a proprietary Qualcomm protocol designed over PCIe.
Modem generates an event entry in the Event Ring.
Manages power transitions including M0, M1, M2, and M3 states. Architecture of MHI Support in QCUDE
I can provide more technical details on this architecture if you tell me:
Aligning TRE ring structures to 64-byte boundaries prevents cacheline bouncing.
Utilizing MHI's event ring capabilities, the Qcude driver configures interrupt coalescing timers. Instead of generating an interrupt for every packet, the modem waits for a timeout or a packet count threshold, reducing context switching overhead during high-load conditions.