Open SCSI Integrator's Manual for NonStop S-Series Servers

The Open SCSI I/O Process (IOP)
Open SCSI Integrator’s Manual for NonStop Servers—422988-002
4-12
The CAM Control Block (CCB)
•
For compatibility with future implementation, the application or peripheral driver
should place into this field the address of the CCB in its own address space.
Basic CCB Structure
Table 4-3
shows the basic CCB structure, which is used for the following CAM
operations (see also Table 4-1
on page 4-9).
•
No Operation
•
Release SIM Queue
•
Reset SCSI Device
•
Set I/O Characteristics
Table 4-3. 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 4-1 on page 4-9) Yes
1 CAM status (see Table 4-8 on page 4-20) Yes
Connect ID, which consists of the following fields:
1(Reserved) -
1Path ID No
1Target ID No
1 LUN No
4 CAM flags (see Table 4-2 on page 4-10) Yes