User Manual

SCSI Commands Reference Manual, Rev. J 370
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5.2.22 Supported Log Pages and Subpages log page (00h/FFh)
For the LOG SENSE command, the Supported Log Pages and Subpages log page (see table 349) returns the list of log pages and subpages
implemented by the logical unit. If log subpages are supported this page shall be supported. This log page is not defined for the LOG SELECT
command.
DS bit, SPF bit, PAGE CODE field, SUBPAGE CODE field, and PAGE LENGTH field
The DS bit, SPF bit, PAGE CODE field, SUBPAGE CODE field, and PAGE LENGTH field are described in 5.2.2. The DS bit, SPF bit, PAGE CODE field,
and SUBPAGE CODE field shall be set as shown in table 350 for the Supported Log Pages and Subpages log page.
The supported page/subpage descriptors (see table 350) shall be in ascending order sorted by page code then subpage code and shall include
a descriptor with subpage code 00h for any implemented log page in which the SPF bit is set to zero.
PAGE CODE field
The PAGE CODE field indicates the number of a supported log page.
SUBPAGE CODE field
The SUBPAGE CODE field indicates the subpage number of a supported log page.
Table 349 Supported Log Pages and Subpages log page (00h/ FFh)
Bit
Byte
7 6 5 4 3 2 1 0
0 DS SPF (1b) PAGE CODE (00h)
1 SUBPAGE CODE (FFh)
2 (MSB)
PAGE LENGTH (n - 3)
3 (LSB)
SUPPORTED PAGE/SUBPAGE DESCRIPTORS
4
FIRST SUPPORTED PAGE/SUBPAGE DESCRIPTOR (see table 350)
5
. . . . . .
n - 1
LAST SUPPORTED PAGE/SUBPAGE DESCRIPTOR (see table 350)
n
Table 350 Supported page/subpage descriptor
Bit
Byte
7 6 5 4 3 2 1 0
0 Reserved PAGE CODE
1 SUBPAGE CODE