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greearb / ath10k-ct

Stand-alone ath10k driver based on Candela Technologies Linux kernel.
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ath10k: backport bus and device specific API 1 BDF selection #204

Closed robimarko closed 2 years ago

robimarko commented 2 years ago

Some ath10k IPQ40xx devices like the MikroTik hAP ac2 and ac3 require the BDF-s to be extracted from the device storage instead of shipping packaged API 2 BDF-s.

This is required as MikroTik has started shipping boards that require BDF-s to be updated, as otherwise their WLAN performance really suffers. This is however impossible as the devices that require this are release under the same revision and its not possible to differentiate them from devices using the older BDF-s.

In OpenWrt we are extracting the calibration data during runtime and we are able to extract the BDF-s in the same manner, however we cannot package the BDF-s to API 2 format on the fly and can only use API 1 to provide BDF-s on the fly. This is an issue as the ath10k driver explicitly looks only for the board.bin file and not for something like board-bus-device.bin like it does for pre-cal data. Due to this we have no way of providing correct BDF-s on the fly, so lets extend the ath10k driver to first look for BDF-s in the board-bus-device.bin format, for example: board-ahb-a800000.wifi.bin If that fails, look for the default board file name as defined previously.

So, backport the upstream ath10k commit to solve this. https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/drivers/net/wireless/ath/ath10k?h=ath-qca&id=f2a7064a78b22f2b68b9fcbc8a6f4c5e61c5ba64

Signed-off-by: Robert Marko robimarko@gmail.com

greearb commented 2 years ago

I pushed this to my trees, please make sure latest code works as you expect. Canceling the merge request.

robimarko commented 2 years ago

Thanks, it works fine for me.