1 /*- 2 * Based on BSD-licensed source modules in the Linux iwlwifi driver, 3 * which were used as the reference documentation for this implementation. 4 * 5 * Driver version we are currently based off of is 6 * Linux 4.7.3 (tag id d7f6728f57e3ecbb7ef34eb7d9f564d514775d75) 7 * 8 *********************************************************************** 9 * 10 * This file is provided under a dual BSD/GPLv2 license. When using or 11 * redistributing this file, you may do so under either license. 12 * 13 * GPL LICENSE SUMMARY 14 * 15 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. 16 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 17 * Copyright(c) 2016 Intel Deutschland GmbH 18 * 19 * This program is free software; you can redistribute it and/or modify 20 * it under the terms of version 2 of the GNU General Public License as 21 * published by the Free Software Foundation. 22 * 23 * This program is distributed in the hope that it will be useful, but 24 * WITHOUT ANY WARRANTY; without even the implied warranty of 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 26 * General Public License for more details. 27 * 28 * You should have received a copy of the GNU General Public License 29 * along with this program; if not, write to the Free Software 30 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 31 * USA 32 * 33 * The full GNU General Public License is included in this distribution 34 * in the file called COPYING. 35 * 36 * Contact Information: 37 * Intel Linux Wireless <linuxwifi@intel.com> 38 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 39 * 40 * BSD LICENSE 41 * 42 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. 43 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 44 * Copyright(c) 2016 Intel Deutschland GmbH 45 * All rights reserved. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 51 * * Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * * Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in 55 * the documentation and/or other materials provided with the 56 * distribution. 57 * * Neither the name Intel Corporation nor the names of its 58 * contributors may be used to endorse or promote products derived 59 * from this software without specific prior written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 62 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 63 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 64 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 65 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 66 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 67 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 68 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 69 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 70 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 71 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 72 * 73 *****************************************************************************/ 74 75 #include <sys/cdefs.h> 76 __FBSDID("$FreeBSD$"); 77 78 #include "opt_wlan.h" 79 #include "opt_iwm.h" 80 81 #include <sys/param.h> 82 #include <sys/bus.h> 83 #include <sys/conf.h> 84 #include <sys/endian.h> 85 #include <sys/firmware.h> 86 #include <sys/kernel.h> 87 #include <sys/malloc.h> 88 #include <sys/mbuf.h> 89 #include <sys/mutex.h> 90 #include <sys/module.h> 91 #include <sys/proc.h> 92 #include <sys/rman.h> 93 #include <sys/socket.h> 94 #include <sys/sockio.h> 95 #include <sys/sysctl.h> 96 #include <sys/linker.h> 97 98 #include <machine/bus.h> 99 #include <machine/endian.h> 100 #include <machine/resource.h> 101 102 #include <dev/pci/pcivar.h> 103 #include <dev/pci/pcireg.h> 104 105 #include <net/bpf.h> 106 107 #include <net/if.h> 108 #include <net/if_var.h> 109 #include <net/if_arp.h> 110 #include <net/if_dl.h> 111 #include <net/if_media.h> 112 #include <net/if_types.h> 113 114 #include <netinet/in.h> 115 #include <netinet/in_systm.h> 116 #include <netinet/if_ether.h> 117 #include <netinet/ip.h> 118 119 #include <net80211/ieee80211_var.h> 120 #include <net80211/ieee80211_regdomain.h> 121 #include <net80211/ieee80211_ratectl.h> 122 #include <net80211/ieee80211_radiotap.h> 123 124 #include <dev/iwm/if_iwmreg.h> 125 #include <dev/iwm/if_iwmvar.h> 126 #include <dev/iwm/if_iwm_config.h> 127 #include <dev/iwm/if_iwm_debug.h> 128 #include <dev/iwm/if_iwm_constants.h> 129 #include <dev/iwm/if_iwm_util.h> 130 #include <dev/iwm/if_iwm_mac_ctxt.h> 131 #include <dev/iwm/if_iwm_sta.h> 132 133 /* 134 * New version of ADD_STA_sta command added new fields at the end of the 135 * structure, so sending the size of the relevant API's structure is enough to 136 * support both API versions. 137 */ 138 static inline int 139 iwm_add_sta_cmd_size(struct iwm_softc *sc) 140 { 141 return sc->cfg->mqrx_supported ? sizeof(struct iwm_add_sta_cmd) : 142 sizeof(struct iwm_add_sta_cmd_v7); 143 } 144 145 /* send station add/update command to firmware */ 146 int 147 iwm_sta_send_to_fw(struct iwm_softc *sc, struct iwm_node *in, 148 boolean_t update) 149 { 150 struct iwm_vap *ivp = IWM_VAP(in->in_ni.ni_vap); 151 struct iwm_add_sta_cmd add_sta_cmd = { 152 .sta_id = IWM_STATION_ID, 153 .mac_id_n_color = 154 htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id, ivp->color)), 155 .add_modify = update ? 1 : 0, 156 .station_flags_msk = htole32(IWM_STA_FLG_FAT_EN_MSK | 157 IWM_STA_FLG_MIMO_EN_MSK), 158 .tid_disable_tx = htole16(0xffff), 159 }; 160 int ret; 161 uint32_t status; 162 uint32_t agg_size = 0, mpdu_dens = 0; 163 164 if (!update) { 165 int ac; 166 for (ac = 0; ac < WME_NUM_AC; ac++) { 167 add_sta_cmd.tfd_queue_msk |= 168 htole32(1 << iwm_ac_to_tx_fifo[ac]); 169 } 170 IEEE80211_ADDR_COPY(&add_sta_cmd.addr, in->in_ni.ni_bssid); 171 } 172 173 add_sta_cmd.station_flags |= 174 htole32(agg_size << IWM_STA_FLG_MAX_AGG_SIZE_SHIFT); 175 add_sta_cmd.station_flags |= 176 htole32(mpdu_dens << IWM_STA_FLG_AGG_MPDU_DENS_SHIFT); 177 178 status = IWM_ADD_STA_SUCCESS; 179 ret = iwm_send_cmd_pdu_status(sc, IWM_ADD_STA, 180 iwm_add_sta_cmd_size(sc), 181 &add_sta_cmd, &status); 182 if (ret) 183 return ret; 184 185 switch (status & IWM_ADD_STA_STATUS_MASK) { 186 case IWM_ADD_STA_SUCCESS: 187 IWM_DPRINTF(sc, IWM_DEBUG_NODE, "IWM_ADD_STA PASSED\n"); 188 break; 189 default: 190 ret = EIO; 191 device_printf(sc->sc_dev, "IWM_ADD_STA failed\n"); 192 break; 193 } 194 195 return ret; 196 } 197 198 int 199 iwm_add_sta(struct iwm_softc *sc, struct iwm_node *in) 200 { 201 return iwm_sta_send_to_fw(sc, in, FALSE); 202 } 203 204 int 205 iwm_update_sta(struct iwm_softc *sc, struct iwm_node *in) 206 { 207 return iwm_sta_send_to_fw(sc, in, TRUE); 208 } 209 210 int 211 iwm_drain_sta(struct iwm_softc *sc, struct iwm_vap *ivp, boolean_t drain) 212 { 213 struct iwm_add_sta_cmd cmd = {}; 214 int ret; 215 uint32_t status; 216 217 cmd.mac_id_n_color = 218 htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id, ivp->color)); 219 cmd.sta_id = IWM_STATION_ID; 220 cmd.add_modify = IWM_STA_MODE_MODIFY; 221 cmd.station_flags = drain ? htole32(IWM_STA_FLG_DRAIN_FLOW) : 0; 222 cmd.station_flags_msk = htole32(IWM_STA_FLG_DRAIN_FLOW); 223 224 status = IWM_ADD_STA_SUCCESS; 225 ret = iwm_send_cmd_pdu_status(sc, IWM_ADD_STA, 226 iwm_add_sta_cmd_size(sc), 227 &cmd, &status); 228 if (ret) 229 return ret; 230 231 switch (status & IWM_ADD_STA_STATUS_MASK) { 232 case IWM_ADD_STA_SUCCESS: 233 IWM_DPRINTF(sc, IWM_DEBUG_NODE, 234 "Frames for staid %d will drained in fw\n", IWM_STATION_ID); 235 break; 236 default: 237 ret = EIO; 238 device_printf(sc->sc_dev, 239 "Couldn't drain frames for staid %d\n", IWM_STATION_ID); 240 break; 241 } 242 243 return ret; 244 } 245 246 /* 247 * Remove a station from the FW table. Before sending the command to remove 248 * the station validate that the station is indeed known to the driver (sanity 249 * only). 250 */ 251 static int 252 iwm_rm_sta_common(struct iwm_softc *sc) 253 { 254 struct iwm_rm_sta_cmd rm_sta_cmd = { 255 .sta_id = IWM_STATION_ID, 256 }; 257 int ret; 258 259 ret = iwm_send_cmd_pdu(sc, IWM_REMOVE_STA, 0, 260 sizeof(rm_sta_cmd), &rm_sta_cmd); 261 if (ret) { 262 device_printf(sc->sc_dev, 263 "Failed to remove station. Id=%d\n", IWM_STATION_ID); 264 return ret; 265 } 266 267 return 0; 268 } 269 270 int 271 iwm_rm_sta(struct iwm_softc *sc, struct ieee80211vap *vap, 272 boolean_t is_assoc) 273 { 274 uint32_t tfd_queue_msk = 0; 275 int ret; 276 int ac; 277 278 ret = iwm_drain_sta(sc, IWM_VAP(vap), TRUE); 279 if (ret) 280 return ret; 281 for (ac = 0; ac < WME_NUM_AC; ac++) { 282 tfd_queue_msk |= htole32(1 << iwm_ac_to_tx_fifo[ac]); 283 } 284 ret = iwm_flush_tx_path(sc, tfd_queue_msk, IWM_CMD_SYNC); 285 if (ret) 286 return ret; 287 #ifdef notyet /* function not yet implemented */ 288 ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 289 mvm_sta->tfd_queue_msk); 290 if (ret) 291 return ret; 292 #endif 293 ret = iwm_drain_sta(sc, IWM_VAP(vap), FALSE); 294 295 /* if we are associated - we can't remove the AP STA now */ 296 if (is_assoc) 297 return ret; 298 299 /* XXX wait until STA is drained */ 300 301 ret = iwm_rm_sta_common(sc); 302 303 return ret; 304 } 305 306 int 307 iwm_rm_sta_id(struct iwm_softc *sc, struct ieee80211vap *vap) 308 { 309 /* XXX wait until STA is drained */ 310 311 return iwm_rm_sta_common(sc); 312 } 313 314 static int 315 iwm_add_int_sta_common(struct iwm_softc *sc, struct iwm_int_sta *sta, 316 const uint8_t *addr, uint16_t mac_id, uint16_t color) 317 { 318 struct iwm_add_sta_cmd cmd; 319 int ret; 320 uint32_t status; 321 322 memset(&cmd, 0, sizeof(cmd)); 323 cmd.sta_id = sta->sta_id; 324 cmd.mac_id_n_color = htole32(IWM_FW_CMD_ID_AND_COLOR(mac_id, color)); 325 if (sta->sta_id == IWM_AUX_STA_ID && sc->cfg->mqrx_supported) 326 cmd.station_type = IWM_STA_AUX_ACTIVITY; 327 328 cmd.tfd_queue_msk = htole32(sta->tfd_queue_msk); 329 cmd.tid_disable_tx = htole16(0xffff); 330 331 if (addr) 332 IEEE80211_ADDR_COPY(cmd.addr, addr); 333 334 ret = iwm_send_cmd_pdu_status(sc, IWM_ADD_STA, 335 iwm_add_sta_cmd_size(sc), 336 &cmd, &status); 337 if (ret) 338 return ret; 339 340 switch (status & IWM_ADD_STA_STATUS_MASK) { 341 case IWM_ADD_STA_SUCCESS: 342 IWM_DPRINTF(sc, IWM_DEBUG_NODE, "Internal station added.\n"); 343 return 0; 344 default: 345 ret = EIO; 346 device_printf(sc->sc_dev, 347 "Add internal station failed, status=0x%x\n", status); 348 break; 349 } 350 return ret; 351 } 352 353 int 354 iwm_add_aux_sta(struct iwm_softc *sc) 355 { 356 int ret; 357 358 sc->sc_aux_sta.sta_id = IWM_AUX_STA_ID; 359 sc->sc_aux_sta.tfd_queue_msk = (1 << IWM_AUX_QUEUE); 360 361 /* Map Aux queue to fifo - needs to happen before adding Aux station */ 362 ret = iwm_enable_txq(sc, IWM_AUX_STA_ID, IWM_AUX_QUEUE, 363 IWM_TX_FIFO_MCAST); 364 if (ret) 365 return ret; 366 367 ret = iwm_add_int_sta_common(sc, &sc->sc_aux_sta, NULL, 368 IWM_MAC_INDEX_AUX, 0); 369 370 if (ret) { 371 memset(&sc->sc_aux_sta, 0, sizeof(sc->sc_aux_sta)); 372 sc->sc_aux_sta.sta_id = IWM_STATION_COUNT; 373 } 374 return ret; 375 } 376 377 void iwm_del_aux_sta(struct iwm_softc *sc) 378 { 379 memset(&sc->sc_aux_sta, 0, sizeof(sc->sc_aux_sta)); 380 sc->sc_aux_sta.sta_id = IWM_STATION_COUNT; 381 } 382