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12.21.9.6 Supports the Deadline Handling subcommand
If Supports the Deadline Handling subcommand is set to one, then the device supports the Deadline Handling
command. If the Supports the Deadline Handling subcommand is cleared to zero, then the device does not support
the Deadline Handling command.
12.21.9.7 Supports WDNC
If Supports WDNC is set to one, then the device supports the WDNC bit of the DEADLINE HANDLING command. If
Supports WDNC is cleared to zero, then the device does not support the WDNC bit of the DEADLINE HANDLING
command.
12.21.9.8 Supports RDNC
If Supports RDNC is set to one, then the device supports the RDNC bit of the Deadline Handling command. If Supports
RDNC is cleared to zero, then the device does not support the WDNC bit of the Deadline Handling command.
12.21.9.9 Supports Set Features
If Supports Set Features is set to one, then the device supports the value of Set Features for the SET FEATURES
subcommand of the NCQ Non-Data command. If the Set Features bit is cleared to zero, then the device does not
support the SET FEATURES subcommand of the NCQ NONDATA command.
12.21.10
NCQ Send and Receive log (log page 13h)
If the SEND AND RECEIVE QUEUED COMMANDS SUPPORTED bit is set to one, the supported Send FPDMA
Queued (64h) subcommands, Receive FPDMA Queued (65h) subcommands, and their respective features, the host
reads log address 13h. If the NCQ FEATURE SET SUPPORTED bit is cleared to zero, then the SEND AND RECEIVE
QUEUED COMMANDS SUPPORTED bit shall be cleared to zero. The IDENTIFY DEVICE data contains a copy of
the SEND AND RECEIVE QUEUED COMMANDS SUPPORTED bit (see IDENTIFY DEVICE data Word 77).
Table 148 defines the 512 bytes that make up the SATA NCQ Send and Receive log
Table 148 SATA NCQ Send and Receive log (log page 00h)
Offset
Type
Description
0..3
DWord
Subcommands supported
Bit Description
31:0 Reserved
4..7
DWord
Data Set Management features supported
Bit Description
31:0 Reserved
8..11
DWord
Supports Read Log
Bit
Description
31:3 Reserved
2 QUEUED READ LOG DMA EXT FEATURE FIELD SUPPORTED bit (see
Section 12.21.10.1)
1 Reserved
0 QUEUED READ LOG DMA EXT SUPPORTED bit
(see Section 12.21.10.2)
12..15
DWord
Supports Write Log
Bit Description
31:1 Reserved
0 QUEUED WRITE LOG DMA EXT SUPPORTED bit (see Section 12.21.10.3)
16..511
Reserved
215
Hard Disk Drive Specification