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.
- 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