/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2011 Adrian Chadd, Xenion Pty Ltd * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any * redistribution must be conditioned upon including a substantially * similar Disclaimer requirement for further binary redistribution. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGES. */ #include <sys/cdefs.h> /* * This implements an empty DFS module. */ #include "opt_ath.h" #include "opt_inet.h" #include "opt_wlan.h" #include <sys/param.h> #include <sys/systm.h> #include <sys/sysctl.h> #include <sys/kernel.h> #include <sys/lock.h> #include <sys/malloc.h> #include <sys/mutex.h> #include <sys/errno.h> #include <machine/bus.h> #include <machine/resource.h> #include <sys/bus.h> #include <sys/socket.h> #include <net/if.h> #include <net/if_var.h> #include <net/if_media.h> #include <net/if_arp.h> #include <net/ethernet.h> /* XXX for ether_sprintf */ #include <net80211/ieee80211_var.h> #include <net/bpf.h> #ifdef INET #include <netinet/in.h> #include <netinet/if_ether.h> #endif #include <dev/ath/if_athvar.h> #include <dev/ath/if_athdfs.h> #include <dev/ath/ath_hal/ah_desc.h> /* * Methods which are required */ /* * Attach DFS to the given interface */ int ath_dfs_attach(struct ath_softc *sc) { return (1); } /* * Detach DFS from the given interface */ int ath_dfs_detach(struct ath_softc *sc) { return (1); } /* * Enable radar check. Return 1 if the driver should * enable radar PHY errors, or 0 if not. */ int ath_dfs_radar_enable(struct ath_softc *sc, struct ieee80211_channel *chan) { #if 1 HAL_PHYERR_PARAM pe; /* Check if the hardware supports radar reporting */ /* XXX TODO: migrate HAL_CAP_RADAR/HAL_CAP_AR to somewhere public! */ if (ath_hal_getcapability(sc->sc_ah, HAL_CAP_PHYDIAG, 0, NULL) != HAL_OK) return (0); /* Check if the current channel is radar-enabled */ if (! IEEE80211_IS_CHAN_DFS(chan)) return (0); /* Fetch the default parameters */ memset(&pe, '\0', sizeof(pe)); if (! ath_hal_getdfsdefaultthresh(sc->sc_ah, &pe)) return (0); /* Enable radar PHY error reporting */ sc->sc_dodfs = 1; /* Tell the hardware to enable radar reporting */ pe.pe_enabled = 1; /* Flip on extension channel events only if doing HT40 */ if (IEEE80211_IS_CHAN_HT40(chan)) pe.pe_extchannel = 1; else pe.pe_extchannel = 0; ath_hal_enabledfs(sc->sc_ah, &pe); /* * Disable strong signal fast diversity - needed for * AR5212 and similar PHYs for reliable short pulse * duration. */ (void) ath_hal_setcapability(sc->sc_ah, HAL_CAP_DIVERSITY, 2, 0, NULL); return (1); #else return (0); #endif } /* * Explicity disable radar reporting. * * Return 0 if it was disabled, < 0 on error. */ int ath_dfs_radar_disable(struct ath_softc *sc) { #if 1 HAL_PHYERR_PARAM pe; (void) ath_hal_getdfsthresh(sc->sc_ah, &pe); pe.pe_enabled = 0; (void) ath_hal_enabledfs(sc->sc_ah, &pe); return (0); #else return (0); #endif } /* * Process DFS related PHY errors * * The mbuf is not "ours" and if we want a copy, we have * to take a copy. It'll be freed after this function returns. */ void ath_dfs_process_phy_err(struct ath_softc *sc, struct mbuf *m, uint64_t tsf, struct ath_rx_status *rxstat) { } /* * Process the radar events and determine whether a DFS event has occurred. * * This is designed to run outside of the RX processing path. * The RX path will call ath_dfs_tasklet_needed() to see whether * the task/callback running this routine needs to be called. */ int ath_dfs_process_radar_event(struct ath_softc *sc, struct ieee80211_channel *chan) { return (0); } /* * Determine whether the DFS check task needs to be queued. * * This is called in the RX task when the current batch of packets * have been received. It will return whether there are any radar * events for ath_dfs_process_radar_event() to handle. */ int ath_dfs_tasklet_needed(struct ath_softc *sc, struct ieee80211_channel *chan) { return (0); } /* * Handle ioctl requests from the diagnostic interface. * * The initial part of this code resembles ath_ioctl_diag(); * it's likely a good idea to reduce duplication between * these two routines. */ int ath_ioctl_phyerr(struct ath_softc *sc, struct ath_diag *ad) { unsigned int id = ad->ad_id & ATH_DIAG_ID; void *indata = NULL; void *outdata = NULL; u_int32_t insize = ad->ad_in_size; u_int32_t outsize = ad->ad_out_size; int error = 0; HAL_PHYERR_PARAM peout; HAL_PHYERR_PARAM *pe; if (ad->ad_id & ATH_DIAG_IN) { /* * Copy in data. */ indata = malloc(insize, M_TEMP, M_NOWAIT); if (indata == NULL) { error = ENOMEM; goto bad; } error = copyin(ad->ad_in_data, indata, insize); if (error) goto bad; } if (ad->ad_id & ATH_DIAG_DYN) { /* * Allocate a buffer for the results (otherwise the HAL * returns a pointer to a buffer where we can read the * results). Note that we depend on the HAL leaving this * pointer for us to use below in reclaiming the buffer; * may want to be more defensive. */ outdata = malloc(outsize, M_TEMP, M_NOWAIT); if (outdata == NULL) { error = ENOMEM; goto bad; } } switch (id) { case DFS_SET_THRESH: if (insize < sizeof(HAL_PHYERR_PARAM)) { error = EINVAL; break; } pe = (HAL_PHYERR_PARAM *) indata; ath_hal_enabledfs(sc->sc_ah, pe); break; case DFS_GET_THRESH: memset(&peout, 0, sizeof(peout)); outsize = sizeof(HAL_PHYERR_PARAM); ath_hal_getdfsthresh(sc->sc_ah, &peout); pe = (HAL_PHYERR_PARAM *) outdata; memcpy(pe, &peout, sizeof(*pe)); break; default: error = EINVAL; } if (outsize < ad->ad_out_size) ad->ad_out_size = outsize; if (outdata && copyout(outdata, ad->ad_out_data, ad->ad_out_size)) error = EFAULT; bad: if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL) free(indata, M_TEMP); if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL) free(outdata, M_TEMP); return (error); } /* * Get the current DFS thresholds from the HAL */ int ath_dfs_get_thresholds(struct ath_softc *sc, HAL_PHYERR_PARAM *param) { ath_hal_getdfsthresh(sc->sc_ah, param); return (1); }
