Engineering:SCSI mode page
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Revision as of 05:47, 13 April 2022 by imported>BotanyGa (correction)
SCSI target devices provide a number of SCSI mode pages. These can be interrogated by a MODE SENSE command and set by a MODE SELECT command. The MODE SENSE commands and the mode page formats include a 6-bit page code field, allowing for 64 possible mode pages. When the number of pages approached this limit, an eight-bit subpage code field was added. A description of many of these page codes is included below. Note that any given SCSI device type will only support a subset of the possible page codes, and some page codes may have different meanings for different devices.
List of SCSI mode page codes
Page/Subpage Code | Description |
---|---|
00h/xxh | Vendor specific |
01h/00h | Read-Write Error Recovery |
02h/00h | Disconnect-Reconnect - allows the initiator to tune SCSI bus performance |
03h/00h | Format Device (disk devices) |
04h/00h | Rigid Disk Geometry |
05h/00h | Flexible Disk |
06h/00h | Optical Memory |
06h/00h | RBC Device Parameters |
07h/00h | Verify Error Recovery |
08h/00h | Caching |
0Ah/00h | Control - tagged queuing, extended contingent allegiance, asynchronous event notification, and error logging |
0Ah/01h | Control Extension - timestamp, asymmetric logical unit access, initial command priority, maximum sense data length |
0Bh/00h | Medium Types Supported |
0Ch/00h | Notch and Partition |
0Dh/00h | CD Device Parameters |
0Eh/00h | CDROM Audio Control |
0Eh/01h | Target Device (Automation/Drive Interface) |
0Eh/02h | DT Device Primary Port parameters (Automation/Drive Interface devices) |
0Eh/03h | Logical Unit parameters (Automation/Drive Interface devices) |
0Eh/04h | Target Device Serial Number (Automation/Drive Interface devices) |
10h/00h | Device Configuration |
11h/00h | Medium Partition (1) |
14h/00h | Enclosure Services Management |
15h/00h | Extended |
16h/00h | Extended Device-Type Specific |
18h/00h | Protocol-Specific Logical Unit |
19h/00h | Protocol-Specific Port |
1Ah/00h | Power Conditions |
1Ah/01h | Power Control |
1Bh/00h | LUN Mapping |
1Ch/00h | Informational Exceptions Control |
1Ch/01h | Background Control |
1Ch/02h | Logical Block Provisioning |
1Dh/00h | Element Address Assignment (media changer devices) |
1Eh/00h | Transport Geometry Parameters (media changer devices) |
1Fh/00h | Device Capabilities (media changer devices) |
20h-29h | Vendor specific |
2Ah/xxh | Device-type specific |
2Ah/00h | CD Capabilities and Mechanical Status |
3Fh/xxh | return all pages and/or subpages (valid only for a MODE SENSE command) |
xxh/FFh | return all subpages (valid only for a MODE SENSE command) |
References
- ↑ "SCSI Primary Commands - 4 (SPC-4)" (PDF). https://raw.githubusercontent.com/ch3ach/GCS-BIOS/master/Doc/spc4r36e.pdf. Retrieved 2021-12-07.
![]() | Original source: https://en.wikipedia.org/wiki/SCSI mode page.
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