Environmental requirements for CQS

Environmental requirements depend on the CQS interface assigned to the client for CQS requests other than CQSREG and CQSDEREG requests.

The following table shows the environment for clients using the authorized CQS interface:

Table 1. Environment for CQS requests (excluding CQSREG and CQSDEREG) using the authorized interface
Environment	State
Authorization	Supervisor state and PSW key 0-7 (PSW key must match the PSW key when the CQSREG request was issued)
Dispatchable unit mode	Task
Cross memory mode	Any, however, PASN must equal the primary address space in which the CQSREG request was issued
AMODE	31
ASC Mode	Primary
Home address space	Any
Locks	No locks held
Interrupt status	Enabled for interrupts
Control parameters	In primary address space

The following table shows the environment for clients using the non-authorized CQS interface:

Table 2. Environment for CQS requests (excluding CQSREG and CQSDEREG) using the non-authorized interface
Environment aspect	State
Authorization	Problem state or PSW key 8 (PSW key must match the PSW key when the CQSREG request was issued)
Dispatchable unit mode	Task
Cross memory mode	None (PASN=SASN=HASN)
AMODE	31
ASC Mode	Primary
Home address space	Address space in which CQSREG was issued
Locks	No locks held
Interrupt status	Enabled for interrupts
Control parameters	In primary address space

The environmental requirements for the CQS register and deregister requests (CQSREG and CQSDEREG) are different from all of the other CQS requests. Authorized clients must issue CQSREG and CQSDEREG requests in the environment shown in the following table.

Table 3. Environment for CQSREG and CQSDEREG requests using the authorized interface
Environment aspect	State
Authorization	Supervisor state and PSW key 0-7
Dispatchable unit mode	Task
Cross memory mode	None (PASN=SASN=HASN)
AMODE	31
ASC Mode	Primary
Locks	No locks held
Interrupt status	Enabled for interrupts
Control parameters	In primary address space

Non-authorized clients must issue CQSREG and CQSDEREG requests in the environment shown in the following table.

Table 4. Environment for CQSREG and CQSDEREG requests using the non-authorized interface
Environment aspect	State
Authorization	Problem state or PSW key 8
Dispatchable unit mode	Task
Cross memory mode	None (PASN=SASN=HASN)
AMODE	31
ASC Mode	Primary
Locks	No locks held
Interrupt status	Enabled for interrupts
Control parameters	In primary address space