718cf2ccb9
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
298 lines
7.2 KiB
C
298 lines
7.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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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/malloc.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_var.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 1
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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 1
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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 occurred.
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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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