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kIOFireWireBogusDCLProgram
The programmed DMA command sequence is not usable
kIOFireWireBogusDCLProgram indicates that a DCL program supplied for the FireWire controller could not be accepted. In this context, DCL refers to the descriptor command list used to describe work for the controller. The status is about the local command program's structure and ownership, not a response payload returned by a remote FireWire node.
Diagnosis should focus on the list that was submitted: its allocation, alignment, command order, callback references, buffer lifetime, and relationship to the correct controller context. Changing the remote device address or retransmitting application payload cannot make an invalid local DCL program valid.
Inspect the program, not only the final transfer
- Capture DCL command types, list length, allocation provenance, buffer addresses, callback tokens, and the controller instance.
- Verify that all referenced buffers and callbacks remain alive until the documented completion path runs.
- Check reset, sleep, and teardown paths for reuse of a DCL program created for an earlier controller or generation state.
- Do not treat this status as a normal remote-device rejection or retry it unchanged.
References
- Apple: IOFireWireFamilyCommon.h
- Apple: IOFireWireDeviceInterface
- Linux kernel: FireWire driver interface guide
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