ISPx entry for invoking an internal shared memory (ISM) Verb (part 1)

Entry:
ISPx
VIT option:
CIA
Event:
Invocation of an internal shared memory (ISM) verb as part of Shared Memory Communications - Direct Memory Access (SMC-D) processing.
VIT processing module:
ISTITCSH
Control is returned to:
The module that issued the INTRACE macroinstruction
This trace record is written when an ISM verb is invoked or when an ISM verb invocation is completed.
The contents of the trace record are described after the figure.
Byte (hex)
Contents
00–03
Record ID:
  • C'ISPI' for ISM parameter list information prior to the ISM verb invocation
  • C'ISPO' for ISM parameter list information after the ISM verb invocation
04
ID is the primary address space ID (ASID). This field is 0 if the ASID is greater than X'FF'.
05
Instance identifier within the module
06–07
Length of the parameter list (PList) that is used for the ISM verb invocation
08–0B
A related control block for this particular ISM verb
0C–0F
0
10–13
Address of the SLNCB control block that represents the ISM interface
14–17
Parameter list address. This is a 64-bit address, but only the lower 32 bits are shown in the trace record.
18–19
Last two characters of the module that issued the ISM verb
1A–1B
Peripheral Component Interconnect Express (PCIe) function ID (PFID) that defines the ISM device that was the target of the ISM verb, in hexadecimal.
1C–1F
Request parameter header (RPH) address