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EtherCAT master TODO
$Id$
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Version 1.5.0:
* Remove ecrt_domain_state().
* Segmented SDO downloads.
* Clear slave list on link down.
* Check force_config flag before error.
* Remove allow_scanning flag.
* Test File access over EtherCAT (FoE) reading.
* Improve application-triggered SDO transfers by moving the statemachine into
the SDO handlers.
* External memory for SDO transfers.
* Bus information via userspace library (slaves, sync managers, PDOs, entries).
* C++ implementation of the library.
* Distributed clocks.
* Bus simulator interface.
* Implement ecrt_master_slave() in kernel space.
* Rename phy-commands to register commands.
Future issues:
* Move master threads, slave handlers and state machines into a user
space daemon.
* Allow master requesting when in ORPHANED phase
* Mailbox protocol handlers.
* Mailbox state machine using toggle bits.
* Mailbox gateway.
* Separate CoE debugging.
* Evaluate EEPROM contents after writing.
* Optimize alignment of process data.
* Redundancy with 2 network adapters.
* Interface/buffers for asynchronous domain IO.
* Make scanning and configuration run parallel (each).
* ethercat tool:
- Data type abbreviations.
- Add a -n (numeric) switch.
- Check for unwanted options.
* Simplify master fsm by introducing a common request state to handle external
requests (replace write_sii, sdo_request, etc).
Smaller issues:
* Stop master thread at ecrt_master_request() to get rid of allow_* flags?
* Clear sync managers in INIT.
* Read out CRC counters.
* Configure slave ports to automatically open on link detection.
* Only execute one EoE handler per EoE cycle.
* Fix datagram errors on application loading/unloading.
Less important issues:
* Allow VLAN tagging.
* Determine number of frames, the NIC can handle.
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