User Manual

Interfacing With the Open SCSI I/O Process (IOP)
Open SCSI for Fibre Channel Controller Integrator’s Manual for HP Integrity NonStop NS-Series Servers—
3-12
The CAM Control Block (CCB)
Basic CCB Structure
Table 3-3 shows the basic CCB structure, which is used for these CAM operations:
•
No Operation
•
Release SIM Queue
•
Reset SCSI Device
•
Set I/O Characteristics
See also Table 3-1 on page 3-9.
Table 3-3. Basic CCB Structure
Size of Field
(in bytes) Description
Supported by
Open SCSI IOP?
4 Address of this CCB: the 32-bit address of this
field
Yes
2 CCB length: length in bytes of this CCB structure;
must be 16 for basic CCB
Yes
1 CAM operation code (See Table 3-1
on page 3-9.) Yes
1 CAM status (See Table 3-8
on page 3-20.) Yes
Connect ID, which consists of these fields:
1(Reserved) -
1Path ID No
1 Target ID No
1 LUN No
4 CAM flags (See Table 3-2
on page 3-10.) Yes