ata: libata-scsi: support the all command format for reporting supported commands

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Add support to ata_scsi_report_supported_opcodes() for the all command
format indicated with a reporting option of 0. The function
ata_scsi_report_all_supported_opcodes() is introduced to implement this
support. This function operates by testing all commands of the
ata_supported_cmds array and testing them using
ata_scsi_cmd_is_supported(), filling rbuf as it loops through all the
commands that libata can emulate or translate.

With this change, sg_opcodes /dev/sdX is able to list all commands
supported by libata and a device. An example below is shown for a SATA
disk also supporting CDL:

  # sg_opcodes /dev/sda
    ATA       WDC  WUH722626AL  WZ41
    Peripheral device type: disk

  Opcode  Service    CDB  RWCDLP,  Name
  (hex)   action(h)  size   CDLP
  -----------------------------------------------
   00                  6    0,0    Test Unit Ready
   01                  6    0,0    Rezero Unit
   03                  6    0,0    Request Sense
   08                  6    0,0    Read(6)
   0a                  6    0,0    Write(6)
   0b                  6    0,0    Seek(6)
   12                  6    0,0    Inquiry
   15                  6    0,0    Mode select(6)
   1a                  6    0,0    Mode sense(6)
   1b                  6    0,0    Start stop unit
   1d                  6    0,0    Send diagnostic
   25                 10    0,0    Read capacity(10)
   28                 10    0,0    Read(10)
   2a                 10    0,0    Write(10)
   2b                 10    0,0    Seek(10)
   2f                 10    0,0    Verify(10)
   35                 10    0,0    Synchronize cache(10)
   55                 10    0,0    Mode select(10)
   5a                 10    0,0    Mode sense(10)
   7f     1ff0        32    0,0    ATA pass-through(32)
   85                 16    0,0    ATA pass-through(16)
   88                 16    1,1    Read(16)
   8a                 16    1,2    Write(16)
   8f                 16    0,0    Verify(16)
   91                 16    0,0    Synchronize cache(16)
   9e       10        16    0,0    Read capacity(16)
   a0                 12    0,0    Report luns
   a1                 12    0,0    ATA pass-through(12)
   a3        c        12    0,0    Report supported operation codes

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@kernel.org>

...

This commit is contained in:

Damien Le Moal 2026-06-20 18:26:44 +09:00

parent bff44d253f

commit 81ab2321c1

1 changed files with 39 additions and 0 deletions

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drivers/ata/libata-scsi.c

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