1 /*- 2 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13 * redistribution must be conditioned upon including a substantially 14 * similar Disclaimer requirement for further binary redistribution. 15 * 16 * NO WARRANTY 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTABILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGES. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 /* 34 * Driver for the Atheros Wireless LAN controller. 35 * 36 * This software is derived from work of Atsushi Onoe; his contribution 37 * is greatly appreciated. 38 */ 39 40 #include "opt_inet.h" 41 #include "opt_ath.h" 42 /* 43 * This is needed for register operations which are performed 44 * by the driver - eg, calls to ath_hal_gettsf32(). 45 * 46 * It's also required for any AH_DEBUG checks in here, eg the 47 * module dependencies. 48 */ 49 #include "opt_ah.h" 50 #include "opt_wlan.h" 51 52 #include <sys/param.h> 53 #include <sys/systm.h> 54 #include <sys/sysctl.h> 55 #include <sys/mbuf.h> 56 #include <sys/malloc.h> 57 #include <sys/lock.h> 58 #include <sys/kernel.h> 59 #include <sys/socket.h> 60 #include <sys/sockio.h> 61 #include <sys/errno.h> 62 #include <sys/callout.h> 63 #include <sys/bus.h> 64 #include <sys/endian.h> 65 #include <sys/kthread.h> 66 #include <sys/taskqueue.h> 67 #include <sys/priv.h> 68 #include <sys/module.h> 69 #include <sys/ktr.h> 70 71 #if !defined(__DragonFly__) 72 #include <sys/smp.h> /* for mp_ncpus */ 73 #include <machine/bus.h> 74 #endif 75 76 #include <net/if.h> 77 #include <net/if_var.h> 78 #include <net/if_dl.h> 79 #include <net/if_media.h> 80 #include <net/if_types.h> 81 #include <net/if_arp.h> 82 #include <net/ethernet.h> 83 #include <net/if_llc.h> 84 85 #include <netproto/802_11/ieee80211_var.h> 86 #include <netproto/802_11/ieee80211_regdomain.h> 87 #ifdef IEEE80211_SUPPORT_SUPERG 88 #include <netproto/802_11/ieee80211_superg.h> 89 #endif 90 #ifdef IEEE80211_SUPPORT_TDMA 91 #include <netproto/802_11/ieee80211_tdma.h> 92 #endif 93 94 #include <net/bpf.h> 95 96 #ifdef INET 97 #include <netinet/in.h> 98 #include <netinet/if_ether.h> 99 #endif 100 101 #include <dev/netif/ath/ath/if_athvar.h> 102 #include <dev/netif/ath/ath_hal/ah_devid.h> /* XXX for softled */ 103 #include <dev/netif/ath/ath_hal/ah_diagcodes.h> 104 105 #include <dev/netif/ath/ath/if_ath_debug.h> 106 #include <dev/netif/ath/ath/if_ath_misc.h> 107 #include <dev/netif/ath/ath/if_ath_btcoex.h> 108 #include <dev/netif/ath/ath/if_ath_spectral.h> 109 #include <dev/netif/ath/ath/if_ath_lna_div.h> 110 #include <dev/netif/ath/ath/if_athdfs.h> 111 112 #ifdef IEEE80211_SUPPORT_TDMA 113 #include <dev/netif/ath/ath/if_ath_tdma.h> 114 #endif 115 116 #include <dev/netif/ath/ath/if_ath_ioctl.h> 117 118 /* 119 * ioctl() related pieces. 120 * 121 * Some subsystems (eg spectral, dfs) have their own ioctl method which 122 * we call. 123 */ 124 125 /* 126 * Fetch the rate control statistics for the given node. 127 */ 128 static int 129 ath_ioctl_ratestats(struct ath_softc *sc, struct ath_rateioctl *rs) 130 { 131 struct ath_node *an; 132 struct ieee80211com *ic = &sc->sc_ic; 133 struct ieee80211_node *ni; 134 int error = 0; 135 136 /* Perform a lookup on the given node */ 137 ni = ieee80211_find_node(&ic->ic_sta, rs->is_u.macaddr); 138 if (ni == NULL) { 139 error = EINVAL; 140 goto bad; 141 } 142 143 /* Lock the ath_node */ 144 an = ATH_NODE(ni); 145 ATH_NODE_LOCK(an); 146 147 /* Fetch the rate control stats for this node */ 148 error = ath_rate_fetch_node_stats(sc, an, rs); 149 150 /* No matter what happens here, just drop through */ 151 152 /* Unlock the ath_node */ 153 ATH_NODE_UNLOCK(an); 154 155 /* Unref the node */ 156 ieee80211_node_decref(ni); 157 158 bad: 159 return (error); 160 } 161 162 #ifdef ATH_DIAGAPI 163 /* 164 * Diagnostic interface to the HAL. This is used by various 165 * tools to do things like retrieve register contents for 166 * debugging. The mechanism is intentionally opaque so that 167 * it can change frequently w/o concern for compatibility. 168 */ 169 static int 170 ath_ioctl_diag(struct ath_softc *sc, struct ath_diag *ad) 171 { 172 struct ath_hal *ah = sc->sc_ah; 173 u_int id = ad->ad_id & ATH_DIAG_ID; 174 void *indata = NULL; 175 void *outdata = NULL; 176 u_int32_t insize = ad->ad_in_size; 177 u_int32_t outsize = ad->ad_out_size; 178 int error = 0; 179 180 if (ad->ad_id & ATH_DIAG_IN) { 181 /* 182 * Copy in data. 183 */ 184 indata = kmalloc(insize, M_TEMP, M_NOWAIT); 185 if (indata == NULL) { 186 error = ENOMEM; 187 goto bad; 188 } 189 error = copyin(ad->ad_in_data, indata, insize); 190 if (error) 191 goto bad; 192 } 193 if (ad->ad_id & ATH_DIAG_DYN) { 194 /* 195 * Allocate a buffer for the results (otherwise the HAL 196 * returns a pointer to a buffer where we can read the 197 * results). Note that we depend on the HAL leaving this 198 * pointer for us to use below in reclaiming the buffer; 199 * may want to be more defensive. 200 */ 201 outdata = kmalloc(outsize, M_TEMP, M_NOWAIT); 202 if (outdata == NULL) { 203 error = ENOMEM; 204 goto bad; 205 } 206 } 207 208 209 ATH_LOCK(sc); 210 if (id != HAL_DIAG_REGS) 211 ath_power_set_power_state(sc, HAL_PM_AWAKE); 212 ATH_UNLOCK(sc); 213 214 if (ath_hal_getdiagstate(ah, id, indata, insize, &outdata, &outsize)) { 215 if (outsize < ad->ad_out_size) 216 ad->ad_out_size = outsize; 217 if (outdata != NULL) 218 error = copyout(outdata, ad->ad_out_data, 219 ad->ad_out_size); 220 } else { 221 error = EINVAL; 222 } 223 224 ATH_LOCK(sc); 225 if (id != HAL_DIAG_REGS) 226 ath_power_restore_power_state(sc); 227 ATH_UNLOCK(sc); 228 229 bad: 230 if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL) 231 kfree(indata, M_TEMP); 232 if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL) 233 kfree(outdata, M_TEMP); 234 return error; 235 } 236 #endif /* ATH_DIAGAPI */ 237 238 int 239 ath_ioctl(struct ieee80211com *ic, u_long cmd, void *data) 240 { 241 struct ifreq *ifr = data; 242 struct ath_softc *sc = ic->ic_softc; 243 244 switch (cmd) { 245 case SIOCGATHSTATS: { 246 struct ieee80211vap *vap; 247 struct ifnet *ifp; 248 const HAL_RATE_TABLE *rt; 249 250 /* NB: embed these numbers to get a consistent view */ 251 sc->sc_stats.ast_tx_packets = 0; 252 sc->sc_stats.ast_rx_packets = 0; 253 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { 254 ifp = vap->iv_ifp; 255 #if defined(__DragonFly__) 256 uint64_t v; 257 IFNET_STAT_GET(ifp, opackets, v); 258 sc->sc_stats.ast_tx_packets += v; 259 IFNET_STAT_GET(ifp, ipackets, v); 260 sc->sc_stats.ast_rx_packets += v; 261 #else 262 sc->sc_stats.ast_tx_packets += ifp->if_get_counter(ifp, 263 IFCOUNTER_OPACKETS); 264 sc->sc_stats.ast_rx_packets += ifp->if_get_counter(ifp, 265 IFCOUNTER_IPACKETS); 266 #endif 267 } 268 sc->sc_stats.ast_tx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgtxrssi); 269 sc->sc_stats.ast_rx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgrssi); 270 #ifdef IEEE80211_SUPPORT_TDMA 271 sc->sc_stats.ast_tdma_tsfadjp = TDMA_AVG(sc->sc_avgtsfdeltap); 272 sc->sc_stats.ast_tdma_tsfadjm = TDMA_AVG(sc->sc_avgtsfdeltam); 273 #endif 274 rt = sc->sc_currates; 275 sc->sc_stats.ast_tx_rate = 276 rt->info[sc->sc_txrix].dot11Rate &~ IEEE80211_RATE_BASIC; 277 if (rt->info[sc->sc_txrix].phy & IEEE80211_T_HT) 278 sc->sc_stats.ast_tx_rate |= IEEE80211_RATE_MCS; 279 return copyout(&sc->sc_stats, 280 ifr->ifr_data, sizeof (sc->sc_stats)); 281 } 282 case SIOCGATHAGSTATS: 283 return copyout(&sc->sc_aggr_stats, 284 ifr->ifr_data, sizeof (sc->sc_aggr_stats)); 285 case SIOCZATHSTATS: { 286 int error; 287 288 error = priv_check(curthread, PRIV_DRIVER); 289 if (error == 0) { 290 memset(&sc->sc_stats, 0, sizeof(sc->sc_stats)); 291 memset(&sc->sc_aggr_stats, 0, 292 sizeof(sc->sc_aggr_stats)); 293 memset(&sc->sc_intr_stats, 0, 294 sizeof(sc->sc_intr_stats)); 295 } 296 return (error); 297 } 298 #ifdef ATH_DIAGAPI 299 case SIOCGATHDIAG: 300 return (ath_ioctl_diag(sc, data)); 301 case SIOCGATHPHYERR: 302 return (ath_ioctl_phyerr(sc, data)); 303 #endif 304 case SIOCGATHSPECTRAL: 305 return (ath_ioctl_spectral(sc, data)); 306 case SIOCGATHNODERATESTATS: 307 return (ath_ioctl_ratestats(sc, data)); 308 default: 309 /* 310 * This signals the net80211 layer that we didn't handle this 311 * ioctl. 312 */ 313 return (ENOTTY); 314 } 315 } 316 317