Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Maciej Lipinski authored 4 years ago and Grzegorz Daniluk committed 4 years ago

In the rx calib FSM, this is needed to over the case when the
calibration is re-started (INIT state entered) during execution
of the FSM (e.g. due to link unplugging, or timeout).

In the tx calib FSM, in theory this is not needed, yet it seems
clean and it might be needed in the future if some sort of
reset is implemented.

Load values from tx_phase_cal.conf file only if MD5 matches. Otherwise,
generate new values.

So far, only LDPC tx calibration was indicated by blinking link led,
now the same behavior was added when LPDC rx calibration is ongoing.

Make sure that the status LED does go green before the LPDC tx
calibration is finished.

Disable the SFP TX before starting the TX calibration and enable it
again when all ports are TX calibrated

- Export HAL generic fsm to libwr (based on Tom work)
- HAL bug fixes and state machines changes

This version of HAL works but need some improvements

- HAL shared memory modified to hide and remove some dependencies not
needed by PPSi
- LPDC structures are now stored in HAL shared memory. They are then
accessible by the share memory dump tool
- Improve the initialization procedure

_hal_port_tx_setup_state_wait_other_ports() was not returning a value.

Maciej Lipinski authored 5 years ago and Jean-Claude BAU committed 5 years ago

The writing must be done by the first LPDC-supporting port after all
the LPDC-supporting ports have been calibrated. Thus, this must be
done in the new state HAL_PORT_TX_SETUP_STATE_WAIT_OTHER_PORTS and
only the first port. Otherwise, we have problem when looping through
all the supporting ports. In particular, the writing must be done for
all LPDC-supporting ports, if we start looping on port N (by ++pointer),
then we will not cover all ports, unless we loop up (++) and (--)
down.

Maciej Lipinski authored 5 years ago and Jean-Claude BAU committed 5 years ago

- point on all ports (with and without LPDC support) to the global
  LPDC structure, this is so that all ports can see whether the LPDC
  ports were all calibrated
- add new state to tx_setup FSM in which ports wait for all the
  LPDC-supported ports to finish calibration

All ports (with and without support) need to wait for LPDC calibartion
to finish because otherwise one of them could become slave and
change the timing_mode while LPDC requires the switch to be in
free-running master mode

Tomasz Wlostowski authored 5 years ago and Jean-Claude BAU committed 5 years ago

- use new version of mini-rpc (less overhead on RT communication polling)
- adjust DMTD averaging interval (shorter for calibration -> speedup)
- make sure the PLL works in freemaster mode before starting calibration
- release control over ports to HAL only after all ports have finished the TX path calibration

Maciej Lipinski authored 5 years ago and Jean-Claude BAU committed 5 years ago

As it is now, once the port with index=0 is calibrated, the
_pll_state is never updated. Also, since the states are called
recursively in case new state is entered, the _pll_state is not
updated unless this is called on port with index=0.

Trying to call it regardless of the port before implementing
complicated mechanism to manage updates once per all ports under
calibration.

Maciej Lipinski authored 5 years ago and Jean-Claude BAU committed 5 years ago

- add timeout for tx calibration to overcome bugs in reading info from SoftPLL
- change initial calibration tolerance
- come changes in prints

Maciej Lipinski authored 5 years ago and Jean-Claude BAU committed 5 years ago

- use the global LPDC structure to know whether the file is
  read/synched (instead of the hack that was used so far)
- rename the variables/function name to be more self-explanatory

Maciej Lipinski authored 5 years ago and Jean-Claude BAU committed 5 years ago

- for tx setup, we need to do some stuff for only one port and
  we need to do other stuff when all ports are calibrated, yet
  we need to know this global information when executing on a
  port.
- Added structure to the hal_ports_t that is pointed to from
  each port that supports LPDC. This structure is then updated
  and checked.
- use this stucture to do the following:
  * execute update of _pll_state only when hal_port_fsm_tx is
    executed on the first port that supports LPDC (it does not
    need to be port with index 0)
  * execute writing configuration file when all LPDC-supporting
    port has finished the tx_setup

Maciej Lipinski authored 5 years ago and Jean-Claude BAU committed 5 years ago

If already exists, the file needs to be read once for all ports and
the structures of the ports need to be updated. this is better done
at the very begining for all ports rather then making a hack and
executing it when port_index=0. Thus, move the thing to the initial
global init.

This is a implementation of the Low Phase Drift Calibration based on
Tom's work (branch tom-v6-determinism-5.0.1)
This commit has not been tested. It just compiles.

New implementation of HAL using sub state machines. The objective is to
facilitate the integration of the new feature "Low Phase Drift
Calibration" which needs two new state machines.
The HAL state machine is available by opening the hal.html file