bcf5fc498a
This is the initial framework to call into the MCI HAL routines and drive the basic state engine. The MCI bluetooth coex model uses a command channel between wlan and bluetooth, rather than a 2-wire or 3-wire signaling protocol to control things. This means the wlan and bluetooth chip exchange a lot more information and signaling, even at the per-packet level. The NICs in question can share the input LNA and output PA on the die, so they absolutely can't stomp on each other in a silly fashion. It also allows for the bluetooth side to signal when profiles come and go, so the driver can take appropriate control. There's also the possibility of dynamic bluetooth/wlan duty cycle control which I haven't yet really played with. It configures things up with a static "wlan wins everything" coexistence, configures up the available 2GHz channel map for bluetooth, sets a static duty cycle for bluetooth/wifi traffic priority and drives the basics needed to keep the MCI HAL code happy. It doesn't do any actual coexistence except to default to "wlan wins everything", which at least demonstrates that things do indeed work. Bluetooth inquiry frames still trump wifi (including beacons), so that demonstrates things really do indeed seem to work. Tested: * AR9462 (WB222), STA mode + bt * QCA9565 (WB335), STA mode + bt TODO: * .. the rest of coexistence. yes, bluetooth, not people. That stuff's hard. * It doesn't do the initial BT side calibration, which requires a WLAN chip reset. I'll fix up the reset path a bit more first before I enable that. * The 1-ant and 2-ant configuration bits aren't being set correctly in if_ath_btcoex.c - I'll dig into that and fix it in a subsequent commit. * It's not enabled by default for WB222/WB225 even though I believe it now can be - I'll chase that up in a subsequent commit. Obtained from: Qualcomm Atheros, Linux ath9k
43 lines
1.9 KiB
C
43 lines
1.9 KiB
C
/*-
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* Copyright (c) 2016 Adrian Chadd <adrian@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*
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* $FreeBSD$
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*/
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#ifndef __IF_ATH_BTCOEX_MCI_H__
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#define __IF_ATH_BTCOEX_MCI_H__
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#define ATH_MCI_NUM_BT_CHANNELS 79
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extern int ath_btcoex_mci_attach(struct ath_softc *sc);
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extern int ath_btcoex_mci_detach(struct ath_softc *sc);
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extern int ath_btcoex_mci_enable(struct ath_softc *sc,
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const struct ieee80211_channel *chan);
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extern void ath_btcoex_mci_intr(struct ath_softc *sc);
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#endif /* __IF_ATH_BTCOEX_MCI_H__ */
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