公开(公告)号：US20210303208A1

公开(公告)日：2021-09-30

申请号：US16836679

申请日：2020-03-31

Applicant: Western Digital Technologies, Inc.

Inventor： David C. BRIEF ,  Rotem SELA ,  Opher LIEBER

IPC: G06F3/06 ,  G06F12/1009

Abstract: Data may be read from a data storage device using host performance booster (HPB). An encoded HPB entry in a read command provides the PBA (Physical Block Address) as well as the run length. The LBA (Logical Block Address), PBA, and run length are placed in an HPB read buffer table. The HPB read buffer table is located in the host device. When the read command is received by the data storage device, the data storage device reads the LBA, transfer length, and HPB entry from the read command. The HPB entry contains the PBA for the LBA as well as the run length for the data to be read. For non-sequential reads, the HPB contains the LBA, transfer length, and reference to a write buffer table that is stored in the data storage device.

公开(公告)号：US20190391761A1

公开(公告)日：2019-12-26

申请号：US16370280

申请日：2019-03-29

Applicant: Western Digital Technologies, Inc.

Inventor： David C. BRIEF ,  Rotem SELA ,  Yoav MARKUS

IPC: G06F3/06 ,  G06F9/4401

Abstract: A method of sending a command from a slave storage device to a master host includes receiving an initial command from the master host. A callback response containing a requested command triggered by the initial command is sent by the slave storage device. In one embodiment, the master host is a Universal Flash Storage (UFS) host and the slave storage device is a UFS storage device. In one embodiment, the initial command is a start stop unit (SSU) command with a power condition field of sleep or powerdown and the requested command is a read buffer command. In another embodiment, the initial command is a start stop unit (SSU) command with a power condition field of active and the requested command is a write buffer command.