if_ath_spectral.c revision 245185
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 245185 2013-01-08 22:15:13Z adrian $ 30244951Sadrian */ 31244951Sadrian#include <sys/cdefs.h> 32244951Sadrian__FBSDID("$FreeBSD: head/sys/dev/ath/if_ath_spectral.c 245185 2013-01-08 22:15:13Z 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; 76245185Sadrian 77245185Sadrian /* 78245185Sadrian * Should we enable spectral scan upon 79245185Sadrian * each network interface reset/change? 80245185Sadrian * 81245185Sadrian * This is intended to allow spectral scan 82245185Sadrian * frame reporting during channel scans. 83245185Sadrian * 84245185Sadrian * Later on it can morph into a larger 85245185Sadrian * scale config method where it pushes 86245185Sadrian * a "channel scan" config into the hardware 87245185Sadrian * rather than just the spectral_state 88245185Sadrian * config. 89245185Sadrian */ 90245185Sadrian int spectral_enable_after_reset; 91244951Sadrian}; 92244951Sadrian 93244951Sadrian/* 94244951Sadrian * Methods which are required 95244951Sadrian */ 96244951Sadrian 97244951Sadrian/* 98245002Sadrian * Attach spectral to the given interface 99244951Sadrian */ 100244951Sadrianint 101244951Sadrianath_spectral_attach(struct ath_softc *sc) 102244951Sadrian{ 103244951Sadrian struct ath_spectral_state *ss; 104244951Sadrian 105245002Sadrian /* 106245002Sadrian * If spectral isn't supported, don't error - just 107245002Sadrian * quietly complete. 108245002Sadrian */ 109245002Sadrian if (! ath_hal_spectral_supported(sc->sc_ah)) 110245002Sadrian return (0); 111245002Sadrian 112244951Sadrian ss = malloc(sizeof(struct ath_spectral_state), 113244951Sadrian M_TEMP, M_WAITOK | M_ZERO); 114244951Sadrian 115244951Sadrian if (ss == NULL) { 116244951Sadrian device_printf(sc->sc_dev, "%s: failed to alloc memory\n", 117244951Sadrian __func__); 118244951Sadrian return (-ENOMEM); 119244951Sadrian } 120244951Sadrian 121244951Sadrian sc->sc_spectral = ss; 122244951Sadrian 123244951Sadrian (void) ath_hal_spectral_get_config(sc->sc_ah, &ss->spectral_state); 124244951Sadrian 125244951Sadrian return (0); 126244951Sadrian} 127244951Sadrian 128244951Sadrian/* 129245002Sadrian * Detach spectral from the given interface 130244951Sadrian */ 131244951Sadrianint 132244951Sadrianath_spectral_detach(struct ath_softc *sc) 133244951Sadrian{ 134245002Sadrian 135245002Sadrian if (! ath_hal_spectral_supported(sc->sc_ah)) 136245002Sadrian return (0); 137245002Sadrian 138244951Sadrian if (sc->sc_spectral != NULL) { 139244951Sadrian free(sc->sc_spectral, M_TEMP); 140244951Sadrian } 141244951Sadrian return (0); 142244951Sadrian} 143244951Sadrian 144244951Sadrian/* 145244951Sadrian * Check whether spectral needs enabling and if so, 146244951Sadrian * flip it on. 147244951Sadrian */ 148244951Sadrianint 149244951Sadrianath_spectral_enable(struct ath_softc *sc, struct ieee80211_channel *ch) 150244951Sadrian{ 151245185Sadrian struct ath_spectral_state *ss = sc->sc_spectral; 152244951Sadrian 153245185Sadrian /* Default to disable spectral PHY reporting */ 154245185Sadrian sc->sc_dospectral = 0; 155245185Sadrian 156245185Sadrian if (ss == NULL) 157245185Sadrian return (0); 158245185Sadrian 159245185Sadrian if (ss->spectral_enable_after_reset) { 160245185Sadrian ath_hal_spectral_configure(sc->sc_ah, 161245185Sadrian &ss->spectral_state); 162245185Sadrian (void) ath_hal_spectral_start(sc->sc_ah); 163245185Sadrian sc->sc_dospectral = 1; 164245185Sadrian } 165244951Sadrian return (0); 166244951Sadrian} 167244951Sadrian 168244951Sadrian/* 169244951Sadrian * Handle ioctl requests from the diagnostic interface. 170244951Sadrian * 171244951Sadrian * The initial part of this code resembles ath_ioctl_diag(); 172244951Sadrian * it's likely a good idea to reduce duplication between 173244951Sadrian * these two routines. 174244951Sadrian */ 175244951Sadrianint 176244951Sadrianath_ioctl_spectral(struct ath_softc *sc, struct ath_diag *ad) 177244951Sadrian{ 178244951Sadrian unsigned int id = ad->ad_id & ATH_DIAG_ID; 179244951Sadrian void *indata = NULL; 180244951Sadrian void *outdata = NULL; 181244951Sadrian u_int32_t insize = ad->ad_in_size; 182244951Sadrian u_int32_t outsize = ad->ad_out_size; 183244951Sadrian int error = 0; 184244951Sadrian HAL_SPECTRAL_PARAM peout; 185244951Sadrian HAL_SPECTRAL_PARAM *pe; 186244951Sadrian struct ath_spectral_state *ss = sc->sc_spectral; 187245185Sadrian int val; 188244951Sadrian 189245002Sadrian if (! ath_hal_spectral_supported(sc->sc_ah)) 190245002Sadrian return (EINVAL); 191245002Sadrian 192244951Sadrian if (ad->ad_id & ATH_DIAG_IN) { 193244951Sadrian /* 194244951Sadrian * Copy in data. 195244951Sadrian */ 196244951Sadrian indata = malloc(insize, M_TEMP, M_NOWAIT); 197244951Sadrian if (indata == NULL) { 198244951Sadrian error = ENOMEM; 199244951Sadrian goto bad; 200244951Sadrian } 201244951Sadrian error = copyin(ad->ad_in_data, indata, insize); 202244951Sadrian if (error) 203244951Sadrian goto bad; 204244951Sadrian } 205244951Sadrian if (ad->ad_id & ATH_DIAG_DYN) { 206244951Sadrian /* 207244951Sadrian * Allocate a buffer for the results (otherwise the HAL 208244951Sadrian * returns a pointer to a buffer where we can read the 209244951Sadrian * results). Note that we depend on the HAL leaving this 210244951Sadrian * pointer for us to use below in reclaiming the buffer; 211244951Sadrian * may want to be more defensive. 212244951Sadrian */ 213244951Sadrian outdata = malloc(outsize, M_TEMP, M_NOWAIT); 214244951Sadrian if (outdata == NULL) { 215244951Sadrian error = ENOMEM; 216244951Sadrian goto bad; 217244951Sadrian } 218244951Sadrian } 219244951Sadrian switch (id) { 220244951Sadrian case SPECTRAL_CONTROL_GET_PARAMS: 221244951Sadrian memset(&peout, 0, sizeof(peout)); 222244951Sadrian outsize = sizeof(HAL_SPECTRAL_PARAM); 223244951Sadrian ath_hal_spectral_get_config(sc->sc_ah, &peout); 224244951Sadrian pe = (HAL_SPECTRAL_PARAM *) outdata; 225244951Sadrian memcpy(pe, &peout, sizeof(*pe)); 226244951Sadrian break; 227244951Sadrian case SPECTRAL_CONTROL_SET_PARAMS: 228244951Sadrian if (insize < sizeof(HAL_SPECTRAL_PARAM)) { 229244951Sadrian error = EINVAL; 230244951Sadrian break; 231244951Sadrian } 232244951Sadrian pe = (HAL_SPECTRAL_PARAM *) indata; 233244951Sadrian ath_hal_spectral_configure(sc->sc_ah, pe); 234244951Sadrian /* Save a local copy of the updated parameters */ 235244951Sadrian ath_hal_spectral_get_config(sc->sc_ah, 236244951Sadrian &ss->spectral_state); 237244951Sadrian break; 238244951Sadrian case SPECTRAL_CONTROL_START: 239244951Sadrian ath_hal_spectral_configure(sc->sc_ah, 240244951Sadrian &ss->spectral_state); 241244951Sadrian (void) ath_hal_spectral_start(sc->sc_ah); 242245185Sadrian sc->sc_dospectral = 1; 243245185Sadrian /* XXX need to update the PHY mask in the driver */ 244244951Sadrian break; 245244951Sadrian case SPECTRAL_CONTROL_STOP: 246244951Sadrian (void) ath_hal_spectral_stop(sc->sc_ah); 247245185Sadrian sc->sc_dospectral = 0; 248245185Sadrian /* XXX need to update the PHY mask in the driver */ 249244951Sadrian break; 250245185Sadrian case SPECTRAL_CONTROL_ENABLE_AT_RESET: 251245185Sadrian if (insize < sizeof(int)) { 252245185Sadrian device_printf(sc->sc_dev, "%d != %d\n", 253245185Sadrian insize, 254245185Sadrian sizeof(int)); 255245185Sadrian error = EINVAL; 256245185Sadrian break; 257245185Sadrian } 258245185Sadrian if (indata == NULL) { 259245185Sadrian device_printf(sc->sc_dev, "indata=NULL\n"); 260245185Sadrian error = EINVAL; 261245185Sadrian break; 262245185Sadrian } 263245185Sadrian val = * ((int *) indata); 264245185Sadrian if (val == 0) 265245185Sadrian ss->spectral_enable_after_reset = 0; 266245185Sadrian else 267245185Sadrian ss->spectral_enable_after_reset = 1; 268245185Sadrian break; 269244951Sadrian case SPECTRAL_CONTROL_ENABLE: 270244951Sadrian /* XXX TODO */ 271244951Sadrian case SPECTRAL_CONTROL_DISABLE: 272244951Sadrian /* XXX TODO */ 273244951Sadrian break; 274244951Sadrian default: 275244951Sadrian error = EINVAL; 276244951Sadrian } 277244951Sadrian if (outsize < ad->ad_out_size) 278244951Sadrian ad->ad_out_size = outsize; 279244951Sadrian if (outdata && copyout(outdata, ad->ad_out_data, ad->ad_out_size)) 280244951Sadrian error = EFAULT; 281244951Sadrianbad: 282244951Sadrian if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL) 283244951Sadrian free(indata, M_TEMP); 284244951Sadrian if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL) 285244951Sadrian free(outdata, M_TEMP); 286244951Sadrian return (error); 287244951Sadrian} 288244951Sadrian 289