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1. (WO2018089176) HARDWARE AUTOMATED LINK CONTROL OF DAISY-CHAINED STORAGE DEVICE

Pub. No.:    WO/2018/089176    International Application No.:    PCT/US2017/056850
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Wed Oct 18 01:59:59 CEST 2017
IPC: G06F 13/10
G06F 13/42
Applicants: QUALCOMM INCORPORATED
Inventors: SHIN, Hyunsuk
TEB, David
VUONG, Hung
GOPALAKRISHNAN, Venkatakrishnan
Title: HARDWARE AUTOMATED LINK CONTROL OF DAISY-CHAINED STORAGE DEVICE
Abstract:
In conventional systems with a plurality of UFS devices daisy-chained to a UFS host, a UFS device driver must be able to differentiate among the links, and send either link control messages or data/management (D/M) messages to a UFS host controller. This can make force the UFS device driver to be complicated and error prone. To address this issue, a host controller can provide a uniform view of a plurality of daisy-chained devices to a device driver of a host. For example, the host controller can be such that from the perspective of the device driver, each device can appear to be a point-to-point connected device. This can allow the device driver to use a same set of link control messages to control the links. In this way, the device driver can be simplified and thus less error prone.