Solaris DDI specific (Solaris DDI).

cdbp

Pointer to command descriptor block.

cmd

The first byte of the SCSI group 0, 1, 2, 4, or 5 CDB.

addr

Pointer to the location of the data.

cnt

Data transfer length in units defined by the SCSI device type. For sequential devices cnt is the number of bytes. For block devices, cnt is the number of blocks.

othr_cdb_data

Additional CDB data.

scsi_setup_cdb() function initializes a group 0, 1, 2, 4, or 5 type of command descriptor block pointed to by cdbp using cmd, addr, cnt, othr_cdb_data.

addr should be set to 0 for commands having no addressing information (for example, group 0 READ command for sequential access devices). othr_cdb_data should be additional CDB data for Group 4 commands; otherwise, it should be set to 0.

scsi_setup_cdb() function does not set the LUN bits in CDB[1] as the makecom(9F) functions do. Also, the fixed bit for sequential access device commands is not set.

scsi_setup_cdb() returns:

1

Upon success.

0

Upon failure.

These functions can be called from a user or interrupt context.

makecom(9F), scsi_pkt(9S)

Writing Device Drivers

American National Standard Small Computer System Interface-2 (SCSI-2)

American National Standard SCSI-3 Primary Commands (SPC)