Huawei ES3000 V5 User Manual page 211

ES3000 V5 NVMe PCIe SSD
User Guide
Command
Code
Issue 07 (2019-03-19)
Offset Description
(Byte)
01 Status Flags (SFLGS): This field indicates the status of
the NVM subsystem.
SMBus Arbitration: Bit 7 is set 1 after a SMBus block
read is complete all the way to the stop bit without bus
contention and cleared to 0 if a SMBus Send Byte FFh is
received on this SMBus slave address.
Drive Not Ready: Bit 6 is set to 1 when the subsystem
cannot process NVMe management commands, and the
rest of the transmission may be invalid. If cleared to 0, then
the NVM subsystem is fully powered and ready to respond
to management commands. This logic level intentionally
identifies and prioritizes powered up and ready drives over
their powered off neighbors on the same SMBus segment.
Drive Functional: Bit 5 is set to 1 to indicate an NVM
subsystem is functional. If cleared to 0, then there is an
unrecoverable failure in the NVM subsystem and the rest
of the transmission may be invalid.
Reset Not Required: Bit 4 is set to 1 to indicate the NVM
subsystem does not need a reset to resume normal
operation. If cleared to 0 then the NVM subsystem has
experienced an error that prevents continued normal
operation. A controller reset is required to resume normal
operation.
Port 0 PCIe Link Active: Bit 3 is set to 1 to indicate the
first port's PCIe link is up (i.e., the Data Link Control and
Management State Machine is in the DL_Active state). If
cleared to 0, then the PCIe link is down.
Port 1 PCIe Link Active: Bit 2 is set to 1 to indicate the
second port's PCIe link is up. If cleared to 0, then the
second port's PCIe link is down or not present.
Bits 1 and 0 must be set to 1.
02 SMART Warnings: This field shall contain the Critical
Warning field (byte 0) of the NVMe SMART / Health
Information log. Each bit in this field shall be inverted
from the NVMe definition (i.e., the management interface
shall indicate a 0 value while the corresponding bit is 1 in
the log page). Refer to the NVMe specification for bit
definitions.
If there are multiple controllers in the NVM subsystem, the
management endpoint shall combine the Critical Warning
field from every controller such that a bit in this field is:
l Cleared to 0 if any controller in the subsystem indicates
a critical warning for that corresponding bit.
l Set to 1 if all controllers in the NVM subsystem do not
indicate a critical warning for the corresponding bit.
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B Out-of-Band Management
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