294 lines
7.1 KiB
C
294 lines
7.1 KiB
C
/*-
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* Copyright (c) 2011 Adrian Chadd, Xenion Pty Ltd
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* This implements an empty DFS module.
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*/
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#include "opt_ath.h"
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#include "opt_inet.h"
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#include "opt_wlan.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sysctl.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/errno.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/bus.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/if_arp.h>
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#include <net/ethernet.h> /* XXX for ether_sprintf */
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#include <net80211/ieee80211_var.h>
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#include <net/bpf.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#endif
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#include <dev/ath/if_athvar.h>
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#include <dev/ath/if_athdfs.h>
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#include <dev/ath/ath_hal/ah_desc.h>
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/*
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* Methods which are required
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*/
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/*
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* Attach DFS to the given interface
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*/
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int
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ath_dfs_attach(struct ath_softc *sc)
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{
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return (1);
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}
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/*
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* Detach DFS from the given interface
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*/
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int
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ath_dfs_detach(struct ath_softc *sc)
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{
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return (1);
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}
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/*
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* Enable radar check. Return 1 if the driver should
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* enable radar PHY errors, or 0 if not.
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*/
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int
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ath_dfs_radar_enable(struct ath_softc *sc, struct ieee80211_channel *chan)
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{
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#if 0
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HAL_PHYERR_PARAM pe;
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/* Check if the hardware supports radar reporting */
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/* XXX TODO: migrate HAL_CAP_RADAR/HAL_CAP_AR to somewhere public! */
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if (ath_hal_getcapability(sc->sc_ah,
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HAL_CAP_PHYDIAG, 0, NULL) != HAL_OK)
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return (0);
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/* Check if the current channel is radar-enabled */
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if (! IEEE80211_IS_CHAN_DFS(chan))
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return (0);
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/* Fetch the default parameters */
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memset(&pe, '\0', sizeof(pe));
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if (! ath_hal_getdfsdefaultthresh(sc->sc_ah, &pe))
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return (0);
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/* Enable radar PHY error reporting */
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sc->sc_dodfs = 1;
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/* Tell the hardware to enable radar reporting */
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pe.pe_enabled = 1;
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/* Flip on extension channel events only if doing HT40 */
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if (IEEE80211_IS_CHAN_HT40(chan))
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pe.pe_extchannel = 1;
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else
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pe.pe_extchannel = 0;
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ath_hal_enabledfs(sc->sc_ah, &pe);
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/*
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* Disable strong signal fast diversity - needed for
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* AR5212 and similar PHYs for reliable short pulse
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* duration.
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*/
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(void) ath_hal_setcapability(sc->sc_ah, HAL_CAP_DIVERSITY, 2, 0, NULL);
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return (1);
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#else
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return (0);
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#endif
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}
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/*
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* Explicity disable radar reporting.
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*
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* Return 0 if it was disabled, < 0 on error.
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*/
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int
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ath_dfs_radar_disable(struct ath_softc *sc)
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{
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#if 0
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HAL_PHYERR_PARAM pe;
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(void) ath_hal_getdfsthresh(sc->sc_ah, &pe);
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pe.pe_enabled = 0;
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(void) ath_hal_enabledfs(sc->sc_ah, &pe);
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return (0);
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#else
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return (0);
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#endif
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}
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/*
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* Process DFS related PHY errors
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*
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* The mbuf is not "ours" and if we want a copy, we have
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* to take a copy. It'll be freed after this function returns.
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*/
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void
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ath_dfs_process_phy_err(struct ath_softc *sc, struct mbuf *m,
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uint64_t tsf, struct ath_rx_status *rxstat)
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{
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}
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/*
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* Process the radar events and determine whether a DFS event has occured.
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*
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* This is designed to run outside of the RX processing path.
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* The RX path will call ath_dfs_tasklet_needed() to see whether
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* the task/callback running this routine needs to be called.
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*/
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int
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ath_dfs_process_radar_event(struct ath_softc *sc,
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struct ieee80211_channel *chan)
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{
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return (0);
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}
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/*
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* Determine whether the DFS check task needs to be queued.
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*
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* This is called in the RX task when the current batch of packets
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* have been received. It will return whether there are any radar
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* events for ath_dfs_process_radar_event() to handle.
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*/
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int
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ath_dfs_tasklet_needed(struct ath_softc *sc, struct ieee80211_channel *chan)
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{
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return (0);
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}
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/*
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* Handle ioctl requests from the diagnostic interface.
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*
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* The initial part of this code resembles ath_ioctl_diag();
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* it's likely a good idea to reduce duplication between
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* these two routines.
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*/
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int
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ath_ioctl_phyerr(struct ath_softc *sc, struct ath_diag *ad)
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{
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unsigned int id = ad->ad_id & ATH_DIAG_ID;
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void *indata = NULL;
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void *outdata = NULL;
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u_int32_t insize = ad->ad_in_size;
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u_int32_t outsize = ad->ad_out_size;
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int error = 0;
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HAL_PHYERR_PARAM peout;
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HAL_PHYERR_PARAM *pe;
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if (ad->ad_id & ATH_DIAG_IN) {
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/*
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* Copy in data.
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*/
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indata = malloc(insize, M_TEMP, M_NOWAIT);
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if (indata == NULL) {
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error = ENOMEM;
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goto bad;
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}
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error = copyin(ad->ad_in_data, indata, insize);
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if (error)
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goto bad;
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}
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if (ad->ad_id & ATH_DIAG_DYN) {
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/*
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* Allocate a buffer for the results (otherwise the HAL
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* returns a pointer to a buffer where we can read the
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* results). Note that we depend on the HAL leaving this
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* pointer for us to use below in reclaiming the buffer;
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* may want to be more defensive.
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*/
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outdata = malloc(outsize, M_TEMP, M_NOWAIT);
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if (outdata == NULL) {
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error = ENOMEM;
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goto bad;
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}
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}
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switch (id) {
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case DFS_SET_THRESH:
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if (insize < sizeof(HAL_PHYERR_PARAM)) {
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error = EINVAL;
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break;
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}
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pe = (HAL_PHYERR_PARAM *) indata;
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ath_hal_enabledfs(sc->sc_ah, pe);
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break;
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case DFS_GET_THRESH:
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memset(&peout, 0, sizeof(peout));
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outsize = sizeof(HAL_PHYERR_PARAM);
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ath_hal_getdfsthresh(sc->sc_ah, &peout);
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pe = (HAL_PHYERR_PARAM *) outdata;
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memcpy(pe, &peout, sizeof(*pe));
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break;
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default:
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error = EINVAL;
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}
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if (outsize < ad->ad_out_size)
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ad->ad_out_size = outsize;
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if (outdata && copyout(outdata, ad->ad_out_data, ad->ad_out_size))
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error = EFAULT;
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bad:
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if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL)
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free(indata, M_TEMP);
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if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL)
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free(outdata, M_TEMP);
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return (error);
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}
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/*
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* Get the current DFS thresholds from the HAL
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*/
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int
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ath_dfs_get_thresholds(struct ath_softc *sc, HAL_PHYERR_PARAM *param)
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{
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ath_hal_getdfsthresh(sc->sc_ah, param);
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return (1);
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}
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