if_ath_spectral.c revision 244951
1244951Sadrian/*- 2244951Sadrian * Copyright (c) 2013 Adrian Chadd <adrian@FreeBSD.org> 3244951Sadrian * All rights reserved. 4244951Sadrian * 5244951Sadrian * Redistribution and use in source and binary forms, with or without 6244951Sadrian * modification, are permitted provided that the following conditions 7244951Sadrian * are met: 8244951Sadrian * 1. Redistributions of source code must retain the above copyright 9244951Sadrian * notice, this list of conditions and the following disclaimer, 10244951Sadrian * without modification. 11244951Sadrian * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12244951Sadrian * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13244951Sadrian * redistribution must be conditioned upon including a substantially 14244951Sadrian * similar Disclaimer requirement for further binary redistribution. 15244951Sadrian * 16244951Sadrian * NO WARRANTY 17244951Sadrian * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18244951Sadrian * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19244951Sadrian * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20244951Sadrian * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21244951Sadrian * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22244951Sadrian * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23244951Sadrian * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24244951Sadrian * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25244951Sadrian * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26244951Sadrian * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27244951Sadrian * THE POSSIBILITY OF SUCH DAMAGES. 28244951Sadrian * 29244951Sadrian * $FreeBSD: head/sys/dev/ath/if_ath_spectral.c 244951 2013-01-02 03:59:02Z adrian $ 30244951Sadrian */ 31244951Sadrian#include <sys/cdefs.h> 32244951Sadrian__FBSDID("$FreeBSD: head/sys/dev/ath/if_ath_spectral.c 244951 2013-01-02 03:59:02Z adrian $"); 33244951Sadrian 34244951Sadrian/* 35244951Sadrian * Implement some basic spectral scan control logic. 36244951Sadrian */ 37244951Sadrian#include "opt_ath.h" 38244951Sadrian#include "opt_inet.h" 39244951Sadrian#include "opt_wlan.h" 40244951Sadrian 41244951Sadrian#include <sys/param.h> 42244951Sadrian#include <sys/systm.h> 43244951Sadrian#include <sys/sysctl.h> 44244951Sadrian#include <sys/kernel.h> 45244951Sadrian#include <sys/lock.h> 46244951Sadrian#include <sys/mutex.h> 47244951Sadrian#include <sys/errno.h> 48244951Sadrian 49244951Sadrian#include <machine/bus.h> 50244951Sadrian#include <machine/resource.h> 51244951Sadrian#include <sys/bus.h> 52244951Sadrian 53244951Sadrian#include <sys/socket.h> 54244951Sadrian 55244951Sadrian#include <net/if.h> 56244951Sadrian#include <net/if_media.h> 57244951Sadrian#include <net/if_arp.h> 58244951Sadrian#include <net/ethernet.h> /* XXX for ether_sprintf */ 59244951Sadrian 60244951Sadrian#include <net80211/ieee80211_var.h> 61244951Sadrian 62244951Sadrian#include <net/bpf.h> 63244951Sadrian 64244951Sadrian#ifdef INET 65244951Sadrian#include <netinet/in.h> 66244951Sadrian#include <netinet/if_ether.h> 67244951Sadrian#endif 68244951Sadrian 69244951Sadrian#include <dev/ath/if_athvar.h> 70244951Sadrian#include <dev/ath/if_ath_spectral.h> 71244951Sadrian 72244951Sadrian#include <dev/ath/ath_hal/ah_desc.h> 73244951Sadrian 74244951Sadrianstruct ath_spectral_state { 75244951Sadrian HAL_SPECTRAL_PARAM spectral_state; 76244951Sadrian int spectral_active; 77244951Sadrian int spectral_enabled; 78244951Sadrian}; 79244951Sadrian 80244951Sadrian/* 81244951Sadrian * Methods which are required 82244951Sadrian */ 83244951Sadrian 84244951Sadrian/* 85244951Sadrian * Attach DFS to the given interface 86244951Sadrian */ 87244951Sadrianint 88244951Sadrianath_spectral_attach(struct ath_softc *sc) 89244951Sadrian{ 90244951Sadrian struct ath_spectral_state *ss; 91244951Sadrian 92244951Sadrian ss = malloc(sizeof(struct ath_spectral_state), 93244951Sadrian M_TEMP, M_WAITOK | M_ZERO); 94244951Sadrian 95244951Sadrian if (ss == NULL) { 96244951Sadrian device_printf(sc->sc_dev, "%s: failed to alloc memory\n", 97244951Sadrian __func__); 98244951Sadrian return (-ENOMEM); 99244951Sadrian } 100244951Sadrian 101244951Sadrian sc->sc_spectral = ss; 102244951Sadrian 103244951Sadrian (void) ath_hal_spectral_get_config(sc->sc_ah, &ss->spectral_state); 104244951Sadrian 105244951Sadrian return (0); 106244951Sadrian} 107244951Sadrian 108244951Sadrian/* 109244951Sadrian * Detach DFS from the given interface 110244951Sadrian */ 111244951Sadrianint 112244951Sadrianath_spectral_detach(struct ath_softc *sc) 113244951Sadrian{ 114244951Sadrian if (sc->sc_spectral != NULL) { 115244951Sadrian free(sc->sc_spectral, M_TEMP); 116244951Sadrian } 117244951Sadrian return (0); 118244951Sadrian} 119244951Sadrian 120244951Sadrian/* 121244951Sadrian * Check whether spectral needs enabling and if so, 122244951Sadrian * flip it on. 123244951Sadrian */ 124244951Sadrianint 125244951Sadrianath_spectral_enable(struct ath_softc *sc, struct ieee80211_channel *ch) 126244951Sadrian{ 127244951Sadrian 128244951Sadrian return (0); 129244951Sadrian} 130244951Sadrian 131244951Sadrian/* 132244951Sadrian * Handle ioctl requests from the diagnostic interface. 133244951Sadrian * 134244951Sadrian * The initial part of this code resembles ath_ioctl_diag(); 135244951Sadrian * it's likely a good idea to reduce duplication between 136244951Sadrian * these two routines. 137244951Sadrian */ 138244951Sadrianint 139244951Sadrianath_ioctl_spectral(struct ath_softc *sc, struct ath_diag *ad) 140244951Sadrian{ 141244951Sadrian unsigned int id = ad->ad_id & ATH_DIAG_ID; 142244951Sadrian void *indata = NULL; 143244951Sadrian void *outdata = NULL; 144244951Sadrian u_int32_t insize = ad->ad_in_size; 145244951Sadrian u_int32_t outsize = ad->ad_out_size; 146244951Sadrian int error = 0; 147244951Sadrian HAL_SPECTRAL_PARAM peout; 148244951Sadrian HAL_SPECTRAL_PARAM *pe; 149244951Sadrian struct ath_spectral_state *ss = sc->sc_spectral; 150244951Sadrian 151244951Sadrian if (ad->ad_id & ATH_DIAG_IN) { 152244951Sadrian /* 153244951Sadrian * Copy in data. 154244951Sadrian */ 155244951Sadrian indata = malloc(insize, M_TEMP, M_NOWAIT); 156244951Sadrian if (indata == NULL) { 157244951Sadrian error = ENOMEM; 158244951Sadrian goto bad; 159244951Sadrian } 160244951Sadrian error = copyin(ad->ad_in_data, indata, insize); 161244951Sadrian if (error) 162244951Sadrian goto bad; 163244951Sadrian } 164244951Sadrian if (ad->ad_id & ATH_DIAG_DYN) { 165244951Sadrian /* 166244951Sadrian * Allocate a buffer for the results (otherwise the HAL 167244951Sadrian * returns a pointer to a buffer where we can read the 168244951Sadrian * results). Note that we depend on the HAL leaving this 169244951Sadrian * pointer for us to use below in reclaiming the buffer; 170244951Sadrian * may want to be more defensive. 171244951Sadrian */ 172244951Sadrian outdata = malloc(outsize, M_TEMP, M_NOWAIT); 173244951Sadrian if (outdata == NULL) { 174244951Sadrian error = ENOMEM; 175244951Sadrian goto bad; 176244951Sadrian } 177244951Sadrian } 178244951Sadrian switch (id) { 179244951Sadrian case SPECTRAL_CONTROL_GET_PARAMS: 180244951Sadrian memset(&peout, 0, sizeof(peout)); 181244951Sadrian outsize = sizeof(HAL_SPECTRAL_PARAM); 182244951Sadrian ath_hal_spectral_get_config(sc->sc_ah, &peout); 183244951Sadrian pe = (HAL_SPECTRAL_PARAM *) outdata; 184244951Sadrian memcpy(pe, &peout, sizeof(*pe)); 185244951Sadrian break; 186244951Sadrian case SPECTRAL_CONTROL_SET_PARAMS: 187244951Sadrian if (insize < sizeof(HAL_SPECTRAL_PARAM)) { 188244951Sadrian error = EINVAL; 189244951Sadrian break; 190244951Sadrian } 191244951Sadrian pe = (HAL_SPECTRAL_PARAM *) indata; 192244951Sadrian ath_hal_spectral_configure(sc->sc_ah, pe); 193244951Sadrian /* Save a local copy of the updated parameters */ 194244951Sadrian ath_hal_spectral_get_config(sc->sc_ah, 195244951Sadrian &ss->spectral_state); 196244951Sadrian break; 197244951Sadrian case SPECTRAL_CONTROL_START: 198244951Sadrian ath_hal_spectral_configure(sc->sc_ah, 199244951Sadrian &ss->spectral_state); 200244951Sadrian (void) ath_hal_spectral_start(sc->sc_ah); 201244951Sadrian break; 202244951Sadrian case SPECTRAL_CONTROL_STOP: 203244951Sadrian (void) ath_hal_spectral_stop(sc->sc_ah); 204244951Sadrian break; 205244951Sadrian case SPECTRAL_CONTROL_ENABLE: 206244951Sadrian /* XXX TODO */ 207244951Sadrian case SPECTRAL_CONTROL_DISABLE: 208244951Sadrian /* XXX TODO */ 209244951Sadrian break; 210244951Sadrian default: 211244951Sadrian error = EINVAL; 212244951Sadrian } 213244951Sadrian if (outsize < ad->ad_out_size) 214244951Sadrian ad->ad_out_size = outsize; 215244951Sadrian if (outdata && copyout(outdata, ad->ad_out_data, ad->ad_out_size)) 216244951Sadrian error = EFAULT; 217244951Sadrianbad: 218244951Sadrian if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL) 219244951Sadrian free(indata, M_TEMP); 220244951Sadrian if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL) 221244951Sadrian free(outdata, M_TEMP); 222244951Sadrian return (error); 223244951Sadrian} 224244951Sadrian 225