Marcin Wojtas 1f4f67f524 ena-com: restructure the ENA logging system
Introduce a new logging system, which replaces the old logging method.

All logs are now displayed in `device_printf` format, requiring
`adapter->pdev` to be passed down to `ena_log`. Whenever that's
impossible, a `printf` wrapped `ena_log_raw` is provided.

For netmap logs, `ena_log_nm` is available, prepending "[nm] " to
an `ena_log` formatted message.

Tx/Rx data path logs are now printed via `ena_log_io`. This allows them
to be conditionally compiled out, depending on the presence of
ENA_LOG_IO_ENABLE compilation flag. By default this flag is disabled.

All `ena_trc_*` ena_com level messages are now also wrapped around
`ena_log` and require `ena_dev->dmadev` to be present.

There are four log levels:
* 0 - ENA_ERR  - enable driver error messages and ena_com error logs,
* 1 - ENA_WARN - enable logs for non-critical errors,
* 2 - ENA_INFO - make the driver more verbose about its actions,
* 3 - ENA_DBG  - enable debug logs

Please see `ena_fbsd_log.h` for implementation details.

Submitted by: Artur Rojek <ar@semihalf.com>
Obtained from: Semihalf
MFC after: 2 weeks
Sponsored by: Amazon, Inc.
2021-06-24 15:48:26 +02:00
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