Table A-7
PRP1
Bit
Description
63:00
PRP Entry 1 (PRP1):
indicates the data buffer. This buffer cannot
have more than one physical discontinuity. The minimum unit is 4 KB.
Table A-8
PRP2
Bit
Description
63:00
PRP Entry 2 (PRP2)
: indicates the second PRP entry. If PRP Entry 1
specifies enough space for the data structure, this field is reserved. If
the data structure requires two PRP entries, this field represents the
second PRP entry address. If data of more than two PRP entries is
transferred, this field points to a PRP list.
Table A-9
Command Dword 10
Bit
Description
31:00
Data_Len
: This field indicates the data length in
unit of Dword. If data transfer is not needed, the
value is
0h
.
Table A-10
Command Dword 12
Bit
Description
31:00
Sub_OpCode:
subcommand number
A.6.1.1.1 Obtaining Logs and Statistical Information
This command is used to obtain vendor logs from the SSD. Each command sent from the host
can obtain a maximum of 4KB of logs. The host obtains the total log size through the vendor
log length query command and then sends commands repeatedly to obtain all logs. Besides
the total data size, the commands must also specify an offset value, where 1 indicates 4 KB.
This command uses the PRP1, PRP2, Dword10, Dword12, and Dword13 fields. Enter
reserved value 0 for other fields that are not involved.
This command distinguishes the type of a returned log by Sub_OpCode, as shown in the
following table:
ES3000 V5 NVMe PCIe SSD
User Guide
A Supported NVMe Commands
Issue 07 (2019-03-19)
Copyright © Huawei Technologies Co., Ltd.
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