f8cc9b09b0
The RX EDMA support requires a modified approach to the RX descriptor
handling.
Specifically:
* There's now two RX queues - high and low priority;
* The RX queues are implemented as FIFOs; they're now an array of pointers
to buffers;
* .. and the RX buffer and descriptor are in the same "buffer", rather than
being separate.
So to that end, this commit abstracts out most of the RX related functions
from the bulk of the driver. Notably, the RX DMA/buffer allocation isn't
updated, primarily because I haven't yet fleshed out what it should look
like.
Whilst I'm here, create a set of matching but mostly unimplemented EDMA
stubs.
Tested:
* AR9280, station mode
TODO:
* Thorough AP and other mode testing for non-EDMA chips;
* Figure out how to allocate RX buffers suitable for RX EDMA, including
correctly setting the mbuf length to compensate for the RX descriptor
and completion status area.
58 lines
2.3 KiB
C
58 lines
2.3 KiB
C
/*-
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* Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
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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_RX_H__
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#define __IF_ATH_RX_H__
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extern u_int32_t ath_calcrxfilter(struct ath_softc *sc);
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extern void ath_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m,
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int subtype, int rssi, int nf);
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#define ath_stoprecv(_sc, _dodelay) \
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(_sc)->sc_rx.recv_stop((_sc), (_dodelay))
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#define ath_startrecv(_sc) \
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(_sc)->sc_rx.recv_start((_sc))
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#define ath_rx_flush(_sc) \
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(_sc)->sc_rx.recv_flush((_sc))
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#define ath_rxbuf_init(_sc, _bf) \
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(_sc)->sc_rx.recv_rxbuf_init((_sc), (_bf))
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#if 0
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extern int ath_rxbuf_init(struct ath_softc *sc, struct ath_buf *bf);
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extern void ath_rx_tasklet(void *arg, int npending);
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extern void ath_rx_proc(struct ath_softc *sc, int resched);
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extern void ath_stoprecv(struct ath_softc *sc, int dodelay);
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extern int ath_startrecv(struct ath_softc *sc);
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#endif
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extern void ath_recv_setup_legacy(struct ath_softc *sc);
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#endif
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