1 /* $OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $ */ 2 3 /* 4 * Copyright (c) 2014 genua mbh <info@genua.de> 5 * Copyright (c) 2014 Fixup Software Ltd. 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /*- 21 * Based on BSD-licensed source modules in the Linux iwlwifi driver, 22 * which were used as the reference documentation for this implementation. 23 * 24 * Driver version we are currently based off of is 25 * Linux 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd) 26 * 27 *********************************************************************** 28 * 29 * This file is provided under a dual BSD/GPLv2 license. When using or 30 * redistributing this file, you may do so under either license. 31 * 32 * GPL LICENSE SUMMARY 33 * 34 * Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved. 35 * 36 * This program is free software; you can redistribute it and/or modify 37 * it under the terms of version 2 of the GNU General Public License as 38 * published by the Free Software Foundation. 39 * 40 * This program is distributed in the hope that it will be useful, but 41 * WITHOUT ANY WARRANTY; without even the implied warranty of 42 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 43 * General Public License for more details. 44 * 45 * You should have received a copy of the GNU General Public License 46 * along with this program; if not, write to the Free Software 47 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 48 * USA 49 * 50 * The full GNU General Public License is included in this distribution 51 * in the file called COPYING. 52 * 53 * Contact Information: 54 * Intel Linux Wireless <ilw@linux.intel.com> 55 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 56 * 57 * 58 * BSD LICENSE 59 * 60 * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved. 61 * All rights reserved. 62 * 63 * Redistribution and use in source and binary forms, with or without 64 * modification, are permitted provided that the following conditions 65 * are met: 66 * 67 * * Redistributions of source code must retain the above copyright 68 * notice, this list of conditions and the following disclaimer. 69 * * Redistributions in binary form must reproduce the above copyright 70 * notice, this list of conditions and the following disclaimer in 71 * the documentation and/or other materials provided with the 72 * distribution. 73 * * Neither the name Intel Corporation nor the names of its 74 * contributors may be used to endorse or promote products derived 75 * from this software without specific prior written permission. 76 * 77 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 78 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 79 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 80 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 81 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 82 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 83 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 84 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 85 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 86 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 87 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 88 */ 89 90 /*- 91 * Copyright (c) 2007-2010 Damien Bergamini <damien.bergamini@free.fr> 92 * 93 * Permission to use, copy, modify, and distribute this software for any 94 * purpose with or without fee is hereby granted, provided that the above 95 * copyright notice and this permission notice appear in all copies. 96 * 97 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 98 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 99 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 100 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 101 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 102 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 103 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 104 */ 105 #include <sys/cdefs.h> 106 __FBSDID("$FreeBSD$"); 107 108 #include "opt_wlan.h" 109 110 #include <sys/param.h> 111 #include <sys/bus.h> 112 #include <sys/conf.h> 113 #include <sys/endian.h> 114 #include <sys/firmware.h> 115 #include <sys/kernel.h> 116 #include <sys/malloc.h> 117 #include <sys/mbuf.h> 118 #include <sys/mutex.h> 119 #include <sys/module.h> 120 #include <sys/proc.h> 121 #include <sys/rman.h> 122 #include <sys/socket.h> 123 #include <sys/sockio.h> 124 #include <sys/sysctl.h> 125 #include <sys/linker.h> 126 127 #include <machine/bus.h> 128 #include <machine/endian.h> 129 #include <machine/resource.h> 130 131 #include <dev/pci/pcivar.h> 132 #include <dev/pci/pcireg.h> 133 134 #include <net/bpf.h> 135 136 #include <net/if.h> 137 #include <net/if_var.h> 138 #include <net/if_arp.h> 139 #include <net/if_dl.h> 140 #include <net/if_media.h> 141 #include <net/if_types.h> 142 143 #include <netinet/in.h> 144 #include <netinet/in_systm.h> 145 #include <netinet/if_ether.h> 146 #include <netinet/ip.h> 147 148 #include <net80211/ieee80211_var.h> 149 #include <net80211/ieee80211_regdomain.h> 150 #include <net80211/ieee80211_ratectl.h> 151 #include <net80211/ieee80211_radiotap.h> 152 153 #include <dev/iwm/if_iwmreg.h> 154 #include <dev/iwm/if_iwmvar.h> 155 #include <dev/iwm/if_iwm_debug.h> 156 #include <dev/iwm/if_iwm_notif_wait.h> 157 #include <dev/iwm/if_iwm_util.h> 158 #include <dev/iwm/if_iwm_scan.h> 159 160 /* 161 * BEGIN mvm/scan.c 162 */ 163 164 #define IWM_DENSE_EBS_SCAN_RATIO 5 165 #define IWM_SPARSE_EBS_SCAN_RATIO 1 166 167 static uint16_t 168 iwm_mvm_scan_rx_chain(struct iwm_softc *sc) 169 { 170 uint16_t rx_chain; 171 uint8_t rx_ant; 172 173 rx_ant = iwm_mvm_get_valid_rx_ant(sc); 174 rx_chain = rx_ant << IWM_PHY_RX_CHAIN_VALID_POS; 175 rx_chain |= rx_ant << IWM_PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 176 rx_chain |= rx_ant << IWM_PHY_RX_CHAIN_FORCE_SEL_POS; 177 rx_chain |= 0x1 << IWM_PHY_RX_CHAIN_DRIVER_FORCE_POS; 178 return htole16(rx_chain); 179 } 180 181 static uint32_t 182 iwm_mvm_scan_rate_n_flags(struct iwm_softc *sc, int flags, int no_cck) 183 { 184 uint32_t tx_ant; 185 int i, ind; 186 187 for (i = 0, ind = sc->sc_scan_last_antenna; 188 i < IWM_RATE_MCS_ANT_NUM; i++) { 189 ind = (ind + 1) % IWM_RATE_MCS_ANT_NUM; 190 if (iwm_mvm_get_valid_tx_ant(sc) & (1 << ind)) { 191 sc->sc_scan_last_antenna = ind; 192 break; 193 } 194 } 195 tx_ant = (1 << sc->sc_scan_last_antenna) << IWM_RATE_MCS_ANT_POS; 196 197 if ((flags & IEEE80211_CHAN_2GHZ) && !no_cck) 198 return htole32(IWM_RATE_1M_PLCP | IWM_RATE_MCS_CCK_MSK | 199 tx_ant); 200 else 201 return htole32(IWM_RATE_6M_PLCP | tx_ant); 202 } 203 204 static const char * 205 iwm_mvm_ebs_status_str(enum iwm_scan_ebs_status status) 206 { 207 switch (status) { 208 case IWM_SCAN_EBS_SUCCESS: 209 return "successful"; 210 case IWM_SCAN_EBS_INACTIVE: 211 return "inactive"; 212 case IWM_SCAN_EBS_FAILED: 213 case IWM_SCAN_EBS_CHAN_NOT_FOUND: 214 default: 215 return "failed"; 216 } 217 } 218 219 void 220 iwm_mvm_rx_lmac_scan_complete_notif(struct iwm_softc *sc, 221 struct iwm_rx_packet *pkt) 222 { 223 struct iwm_periodic_scan_complete *scan_notif = (void *)pkt->data; 224 boolean_t aborted = (scan_notif->status == IWM_SCAN_OFFLOAD_ABORTED); 225 226 /* If this happens, the firmware has mistakenly sent an LMAC 227 * notification during UMAC scans -- warn and ignore it. 228 */ 229 if (fw_has_capa(&sc->ucode_capa, IWM_UCODE_TLV_CAPA_UMAC_SCAN)) { 230 device_printf(sc->sc_dev, 231 "%s: Mistakenly got LMAC notification during UMAC scan\n", 232 __func__); 233 return; 234 } 235 236 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Regular scan %s, EBS status %s (FW)\n", 237 aborted ? "aborted" : "completed", 238 iwm_mvm_ebs_status_str(scan_notif->ebs_status)); 239 240 sc->last_ebs_successful = 241 scan_notif->ebs_status == IWM_SCAN_EBS_SUCCESS || 242 scan_notif->ebs_status == IWM_SCAN_EBS_INACTIVE; 243 244 } 245 246 void 247 iwm_mvm_rx_umac_scan_complete_notif(struct iwm_softc *sc, 248 struct iwm_rx_packet *pkt) 249 { 250 struct iwm_umac_scan_complete *notif = (void *)pkt->data; 251 uint32_t uid = le32toh(notif->uid); 252 boolean_t aborted = (notif->status == IWM_SCAN_OFFLOAD_ABORTED); 253 254 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 255 "Scan completed, uid %u, status %s, EBS status %s\n", 256 uid, 257 aborted ? "aborted" : "completed", 258 iwm_mvm_ebs_status_str(notif->ebs_status)); 259 260 if (notif->ebs_status != IWM_SCAN_EBS_SUCCESS && 261 notif->ebs_status != IWM_SCAN_EBS_INACTIVE) 262 sc->last_ebs_successful = FALSE; 263 } 264 265 static int 266 iwm_mvm_scan_skip_channel(struct ieee80211_channel *c) 267 { 268 if (IEEE80211_IS_CHAN_2GHZ(c) && IEEE80211_IS_CHAN_B(c)) 269 return 0; 270 else if (IEEE80211_IS_CHAN_5GHZ(c) && IEEE80211_IS_CHAN_A(c)) 271 return 0; 272 else 273 return 1; 274 } 275 276 static uint8_t 277 iwm_mvm_lmac_scan_fill_channels(struct iwm_softc *sc, 278 struct iwm_scan_channel_cfg_lmac *chan, int n_ssids) 279 { 280 struct ieee80211com *ic = &sc->sc_ic; 281 struct ieee80211_scan_state *ss = ic->ic_scan; 282 struct ieee80211_channel *c; 283 uint8_t nchan; 284 int j; 285 286 for (nchan = j = 0; 287 j < ic->ic_nchans && nchan < sc->ucode_capa.n_scan_channels; j++) { 288 c = &ic->ic_channels[j]; 289 /* For 2GHz, only populate 11b channels */ 290 /* For 5GHz, only populate 11a channels */ 291 /* 292 * Catch other channels, in case we have 900MHz channels or 293 * something in the chanlist. 294 */ 295 if (iwm_mvm_scan_skip_channel(c)) { 296 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, 297 "%s: skipping channel (freq=%d, ieee=%d, flags=0x%08x)\n", 298 __func__, c->ic_freq, c->ic_ieee, c->ic_flags); 299 continue; 300 } 301 302 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, 303 "Adding channel %d (%d Mhz) to the list\n", 304 nchan, c->ic_freq); 305 chan->channel_num = htole16(ieee80211_mhz2ieee(c->ic_freq, 0)); 306 chan->iter_count = htole16(1); 307 chan->iter_interval = htole32(0); 308 chan->flags = htole32(IWM_UNIFIED_SCAN_CHANNEL_PARTIAL); 309 chan->flags |= htole32(IWM_SCAN_CHANNEL_NSSIDS(n_ssids)); 310 /* XXX IEEE80211_SCAN_NOBCAST flag is never set. */ 311 if (!IEEE80211_IS_CHAN_PASSIVE(c) && 312 (!(ss->ss_flags & IEEE80211_SCAN_NOBCAST) || n_ssids != 0)) 313 chan->flags |= htole32(IWM_SCAN_CHANNEL_TYPE_ACTIVE); 314 chan++; 315 nchan++; 316 } 317 318 return nchan; 319 } 320 321 static uint8_t 322 iwm_mvm_umac_scan_fill_channels(struct iwm_softc *sc, 323 struct iwm_scan_channel_cfg_umac *chan, int n_ssids) 324 { 325 struct ieee80211com *ic = &sc->sc_ic; 326 struct ieee80211_channel *c; 327 uint8_t nchan; 328 int j; 329 330 for (nchan = j = 0; 331 j < ic->ic_nchans && nchan < sc->ucode_capa.n_scan_channels; j++) { 332 c = &ic->ic_channels[j]; 333 /* For 2GHz, only populate 11b channels */ 334 /* For 5GHz, only populate 11a channels */ 335 /* 336 * Catch other channels, in case we have 900MHz channels or 337 * something in the chanlist. 338 */ 339 if (iwm_mvm_scan_skip_channel(c)) { 340 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, 341 "%s: skipping channel (freq=%d, ieee=%d, flags=0x%08x)\n", 342 __func__, c->ic_freq, c->ic_ieee, c->ic_flags); 343 continue; 344 } 345 346 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, 347 "Adding channel %d (%d Mhz) to the list\n", 348 nchan, c->ic_freq); 349 chan->channel_num = ieee80211_mhz2ieee(c->ic_freq, 0); 350 chan->iter_count = 1; 351 chan->iter_interval = htole16(0); 352 chan->flags = htole32(IWM_SCAN_CHANNEL_UMAC_NSSIDS(n_ssids)); 353 chan++; 354 nchan++; 355 } 356 357 return nchan; 358 } 359 360 static int 361 iwm_mvm_fill_probe_req(struct iwm_softc *sc, struct iwm_scan_probe_req *preq) 362 { 363 struct ieee80211com *ic = &sc->sc_ic; 364 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 365 struct ieee80211_frame *wh = (struct ieee80211_frame *)preq->buf; 366 struct ieee80211_rateset *rs; 367 size_t remain = sizeof(preq->buf); 368 uint8_t *frm, *pos; 369 370 memset(preq, 0, sizeof(*preq)); 371 372 /* Ensure enough space for header and SSID IE. */ 373 if (remain < sizeof(*wh) + 2) 374 return ENOBUFS; 375 376 /* 377 * Build a probe request frame. Most of the following code is a 378 * copy & paste of what is done in net80211. 379 */ 380 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 381 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 382 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 383 IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr); 384 IEEE80211_ADDR_COPY(wh->i_addr2, vap ? vap->iv_myaddr : ic->ic_macaddr); 385 IEEE80211_ADDR_COPY(wh->i_addr3, ieee80211broadcastaddr); 386 *(uint16_t *)&wh->i_dur[0] = 0; /* filled by HW */ 387 *(uint16_t *)&wh->i_seq[0] = 0; /* filled by HW */ 388 389 frm = (uint8_t *)(wh + 1); 390 frm = ieee80211_add_ssid(frm, NULL, 0); 391 392 /* Tell the firmware where the MAC header is. */ 393 preq->mac_header.offset = 0; 394 preq->mac_header.len = htole16(frm - (uint8_t *)wh); 395 remain -= frm - (uint8_t *)wh; 396 397 /* Fill in 2GHz IEs and tell firmware where they are. */ 398 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 399 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 400 if (remain < 4 + rs->rs_nrates) 401 return ENOBUFS; 402 } else if (remain < 2 + rs->rs_nrates) { 403 return ENOBUFS; 404 } 405 preq->band_data[0].offset = htole16(frm - (uint8_t *)wh); 406 pos = frm; 407 frm = ieee80211_add_rates(frm, rs); 408 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 409 frm = ieee80211_add_xrates(frm, rs); 410 preq->band_data[0].len = htole16(frm - pos); 411 remain -= frm - pos; 412 413 if (fw_has_capa(&sc->ucode_capa, 414 IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) { 415 if (remain < 3) 416 return ENOBUFS; 417 *frm++ = IEEE80211_ELEMID_DSPARMS; 418 *frm++ = 1; 419 *frm++ = 0; 420 remain -= 3; 421 } 422 423 if (sc->nvm_data->sku_cap_band_52GHz_enable) { 424 /* Fill in 5GHz IEs. */ 425 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 426 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 427 if (remain < 4 + rs->rs_nrates) 428 return ENOBUFS; 429 } else if (remain < 2 + rs->rs_nrates) { 430 return ENOBUFS; 431 } 432 preq->band_data[1].offset = htole16(frm - (uint8_t *)wh); 433 pos = frm; 434 frm = ieee80211_add_rates(frm, rs); 435 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 436 frm = ieee80211_add_xrates(frm, rs); 437 preq->band_data[1].len = htole16(frm - pos); 438 remain -= frm - pos; 439 } 440 441 /* Send 11n IEs on both 2GHz and 5GHz bands. */ 442 preq->common_data.offset = htole16(frm - (uint8_t *)wh); 443 pos = frm; 444 #if 0 445 if (ic->ic_flags & IEEE80211_F_HTON) { 446 if (remain < 28) 447 return ENOBUFS; 448 frm = ieee80211_add_htcaps(frm, ic); 449 /* XXX add WME info? */ 450 } 451 #endif 452 preq->common_data.len = htole16(frm - pos); 453 454 return 0; 455 } 456 457 int 458 iwm_mvm_config_umac_scan(struct iwm_softc *sc) 459 { 460 struct ieee80211com *ic = &sc->sc_ic; 461 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 462 463 struct iwm_scan_config *scan_config; 464 int ret, j, nchan; 465 size_t cmd_size; 466 struct ieee80211_channel *c; 467 struct iwm_host_cmd hcmd = { 468 .id = iwm_cmd_id(IWM_SCAN_CFG_CMD, IWM_ALWAYS_LONG_GROUP, 0), 469 .flags = IWM_CMD_SYNC, 470 }; 471 static const uint32_t rates = (IWM_SCAN_CONFIG_RATE_1M | 472 IWM_SCAN_CONFIG_RATE_2M | IWM_SCAN_CONFIG_RATE_5M | 473 IWM_SCAN_CONFIG_RATE_11M | IWM_SCAN_CONFIG_RATE_6M | 474 IWM_SCAN_CONFIG_RATE_9M | IWM_SCAN_CONFIG_RATE_12M | 475 IWM_SCAN_CONFIG_RATE_18M | IWM_SCAN_CONFIG_RATE_24M | 476 IWM_SCAN_CONFIG_RATE_36M | IWM_SCAN_CONFIG_RATE_48M | 477 IWM_SCAN_CONFIG_RATE_54M); 478 479 cmd_size = sizeof(*scan_config) + sc->ucode_capa.n_scan_channels; 480 481 scan_config = malloc(cmd_size, M_DEVBUF, M_NOWAIT | M_ZERO); 482 if (scan_config == NULL) 483 return ENOMEM; 484 485 scan_config->tx_chains = htole32(iwm_mvm_get_valid_tx_ant(sc)); 486 scan_config->rx_chains = htole32(iwm_mvm_get_valid_rx_ant(sc)); 487 scan_config->legacy_rates = htole32(rates | 488 IWM_SCAN_CONFIG_SUPPORTED_RATE(rates)); 489 490 /* These timings correspond to iwlwifi's UNASSOC scan. */ 491 scan_config->dwell_active = 10; 492 scan_config->dwell_passive = 110; 493 scan_config->dwell_fragmented = 44; 494 scan_config->dwell_extended = 90; 495 scan_config->out_of_channel_time = htole32(0); 496 scan_config->suspend_time = htole32(0); 497 498 IEEE80211_ADDR_COPY(scan_config->mac_addr, 499 vap ? vap->iv_myaddr : ic->ic_macaddr); 500 501 scan_config->bcast_sta_id = sc->sc_aux_sta.sta_id; 502 scan_config->channel_flags = IWM_CHANNEL_FLAG_EBS | 503 IWM_CHANNEL_FLAG_ACCURATE_EBS | IWM_CHANNEL_FLAG_EBS_ADD | 504 IWM_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 505 506 for (nchan = j = 0; 507 j < ic->ic_nchans && nchan < sc->ucode_capa.n_scan_channels; j++) { 508 c = &ic->ic_channels[j]; 509 /* For 2GHz, only populate 11b channels */ 510 /* For 5GHz, only populate 11a channels */ 511 /* 512 * Catch other channels, in case we have 900MHz channels or 513 * something in the chanlist. 514 */ 515 if (iwm_mvm_scan_skip_channel(c)) 516 continue; 517 scan_config->channel_array[nchan++] = 518 ieee80211_mhz2ieee(c->ic_freq, 0); 519 } 520 521 scan_config->flags = htole32(IWM_SCAN_CONFIG_FLAG_ACTIVATE | 522 IWM_SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 523 IWM_SCAN_CONFIG_FLAG_SET_TX_CHAINS | 524 IWM_SCAN_CONFIG_FLAG_SET_RX_CHAINS | 525 IWM_SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 526 IWM_SCAN_CONFIG_FLAG_SET_ALL_TIMES | 527 IWM_SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 528 IWM_SCAN_CONFIG_FLAG_SET_MAC_ADDR | 529 IWM_SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS| 530 IWM_SCAN_CONFIG_N_CHANNELS(nchan) | 531 IWM_SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 532 533 hcmd.data[0] = scan_config; 534 hcmd.len[0] = cmd_size; 535 536 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Sending UMAC scan config\n"); 537 538 ret = iwm_send_cmd(sc, &hcmd); 539 if (!ret) 540 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 541 "UMAC scan config was sent successfully\n"); 542 543 free(scan_config, M_DEVBUF); 544 return ret; 545 } 546 547 static boolean_t 548 iwm_mvm_scan_use_ebs(struct iwm_softc *sc) 549 { 550 const struct iwm_ucode_capabilities *capa = &sc->ucode_capa; 551 552 /* We can only use EBS if: 553 * 1. the feature is supported; 554 * 2. the last EBS was successful; 555 * 3. if only single scan, the single scan EBS API is supported; 556 * 4. it's not a p2p find operation. 557 */ 558 return ((capa->flags & IWM_UCODE_TLV_FLAGS_EBS_SUPPORT) && 559 sc->last_ebs_successful); 560 } 561 562 int 563 iwm_mvm_umac_scan(struct iwm_softc *sc) 564 { 565 struct iwm_host_cmd hcmd = { 566 .id = iwm_cmd_id(IWM_SCAN_REQ_UMAC, IWM_ALWAYS_LONG_GROUP, 0), 567 .len = { 0, }, 568 .data = { NULL, }, 569 .flags = IWM_CMD_SYNC, 570 }; 571 struct ieee80211_scan_state *ss = sc->sc_ic.ic_scan; 572 struct iwm_scan_req_umac *req; 573 struct iwm_scan_req_umac_tail *tail; 574 size_t req_len; 575 uint8_t i, nssid; 576 int ret; 577 578 req_len = sizeof(struct iwm_scan_req_umac) + 579 (sizeof(struct iwm_scan_channel_cfg_umac) * 580 sc->ucode_capa.n_scan_channels) + 581 sizeof(struct iwm_scan_req_umac_tail); 582 if (req_len > IWM_MAX_CMD_PAYLOAD_SIZE) 583 return ENOMEM; 584 req = malloc(req_len, M_DEVBUF, M_NOWAIT | M_ZERO); 585 if (req == NULL) 586 return ENOMEM; 587 588 hcmd.len[0] = (uint16_t)req_len; 589 hcmd.data[0] = (void *)req; 590 591 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Handling ieee80211 scan request\n"); 592 593 /* These timings correspond to iwlwifi's UNASSOC scan. */ 594 req->active_dwell = 10; 595 req->passive_dwell = 110; 596 req->fragmented_dwell = 44; 597 req->extended_dwell = 90; 598 req->max_out_time = 0; 599 req->suspend_time = 0; 600 601 req->scan_priority = htole32(IWM_SCAN_PRIORITY_HIGH); 602 req->ooc_priority = htole32(IWM_SCAN_PRIORITY_HIGH); 603 604 nssid = MIN(ss->ss_nssid, IWM_PROBE_OPTION_MAX); 605 req->n_channels = iwm_mvm_umac_scan_fill_channels(sc, 606 (struct iwm_scan_channel_cfg_umac *)req->data, nssid); 607 608 req->general_flags = htole32(IWM_UMAC_SCAN_GEN_FLAGS_PASS_ALL | 609 IWM_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE | 610 IWM_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL); 611 612 tail = (void *)((char *)&req->data + 613 sizeof(struct iwm_scan_channel_cfg_umac) * 614 sc->ucode_capa.n_scan_channels); 615 616 /* Check if we're doing an active directed scan. */ 617 for (i = 0; i < nssid; i++) { 618 tail->direct_scan[i].id = IEEE80211_ELEMID_SSID; 619 tail->direct_scan[i].len = MIN(ss->ss_ssid[i].len, 620 IEEE80211_NWID_LEN); 621 memcpy(tail->direct_scan[i].ssid, ss->ss_ssid[i].ssid, 622 tail->direct_scan[i].len); 623 /* XXX debug */ 624 } 625 if (nssid != 0) { 626 req->general_flags |= 627 htole32(IWM_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT); 628 } else 629 req->general_flags |= htole32(IWM_UMAC_SCAN_GEN_FLAGS_PASSIVE); 630 631 if (iwm_mvm_scan_use_ebs(sc)) 632 req->channel_flags = IWM_SCAN_CHANNEL_FLAG_EBS | 633 IWM_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 634 IWM_SCAN_CHANNEL_FLAG_CACHE_ADD; 635 636 if (fw_has_capa(&sc->ucode_capa, 637 IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 638 req->general_flags |= 639 htole32(IWM_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED); 640 641 ret = iwm_mvm_fill_probe_req(sc, &tail->preq); 642 if (ret) { 643 free(req, M_DEVBUF); 644 return ret; 645 } 646 647 /* Specify the scan plan: We'll do one iteration. */ 648 tail->schedule[0].interval = 0; 649 tail->schedule[0].iter_count = 1; 650 651 ret = iwm_send_cmd(sc, &hcmd); 652 if (!ret) 653 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 654 "Scan request was sent successfully\n"); 655 free(req, M_DEVBUF); 656 return ret; 657 } 658 659 int 660 iwm_mvm_lmac_scan(struct iwm_softc *sc) 661 { 662 struct iwm_host_cmd hcmd = { 663 .id = IWM_SCAN_OFFLOAD_REQUEST_CMD, 664 .len = { 0, }, 665 .data = { NULL, }, 666 .flags = IWM_CMD_SYNC, 667 }; 668 struct ieee80211_scan_state *ss = sc->sc_ic.ic_scan; 669 struct iwm_scan_req_lmac *req; 670 size_t req_len; 671 uint8_t i, nssid; 672 int ret; 673 674 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 675 "Handling ieee80211 scan request\n"); 676 677 req_len = sizeof(struct iwm_scan_req_lmac) + 678 (sizeof(struct iwm_scan_channel_cfg_lmac) * 679 sc->ucode_capa.n_scan_channels) + sizeof(struct iwm_scan_probe_req); 680 if (req_len > IWM_MAX_CMD_PAYLOAD_SIZE) 681 return ENOMEM; 682 req = malloc(req_len, M_DEVBUF, M_NOWAIT | M_ZERO); 683 if (req == NULL) 684 return ENOMEM; 685 686 hcmd.len[0] = (uint16_t)req_len; 687 hcmd.data[0] = (void *)req; 688 689 /* These timings correspond to iwlwifi's UNASSOC scan. */ 690 req->active_dwell = 10; 691 req->passive_dwell = 110; 692 req->fragmented_dwell = 44; 693 req->extended_dwell = 90; 694 req->max_out_time = 0; 695 req->suspend_time = 0; 696 697 req->scan_prio = htole32(IWM_SCAN_PRIORITY_HIGH); 698 req->rx_chain_select = iwm_mvm_scan_rx_chain(sc); 699 req->iter_num = htole32(1); 700 req->delay = 0; 701 702 req->scan_flags = htole32(IWM_MVM_LMAC_SCAN_FLAG_PASS_ALL | 703 IWM_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE | 704 IWM_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL); 705 if (fw_has_capa(&sc->ucode_capa, 706 IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 707 req->scan_flags |= htole32(IWM_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED); 708 709 req->flags = htole32(IWM_PHY_BAND_24); 710 if (sc->nvm_data->sku_cap_band_52GHz_enable) 711 req->flags |= htole32(IWM_PHY_BAND_5); 712 req->filter_flags = 713 htole32(IWM_MAC_FILTER_ACCEPT_GRP | IWM_MAC_FILTER_IN_BEACON); 714 715 /* Tx flags 2 GHz. */ 716 req->tx_cmd[0].tx_flags = htole32(IWM_TX_CMD_FLG_SEQ_CTL | 717 IWM_TX_CMD_FLG_BT_DIS); 718 req->tx_cmd[0].rate_n_flags = 719 iwm_mvm_scan_rate_n_flags(sc, IEEE80211_CHAN_2GHZ, 1/*XXX*/); 720 req->tx_cmd[0].sta_id = sc->sc_aux_sta.sta_id; 721 722 /* Tx flags 5 GHz. */ 723 req->tx_cmd[1].tx_flags = htole32(IWM_TX_CMD_FLG_SEQ_CTL | 724 IWM_TX_CMD_FLG_BT_DIS); 725 req->tx_cmd[1].rate_n_flags = 726 iwm_mvm_scan_rate_n_flags(sc, IEEE80211_CHAN_5GHZ, 1/*XXX*/); 727 req->tx_cmd[1].sta_id = sc->sc_aux_sta.sta_id; 728 729 /* Check if we're doing an active directed scan. */ 730 nssid = MIN(ss->ss_nssid, IWM_PROBE_OPTION_MAX); 731 for (i = 0; i < nssid; i++) { 732 req->direct_scan[i].id = IEEE80211_ELEMID_SSID; 733 req->direct_scan[i].len = MIN(ss->ss_ssid[i].len, 734 IEEE80211_NWID_LEN); 735 memcpy(req->direct_scan[i].ssid, ss->ss_ssid[i].ssid, 736 req->direct_scan[i].len); 737 /* XXX debug */ 738 } 739 if (nssid != 0) { 740 req->scan_flags |= 741 htole32(IWM_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION); 742 } else 743 req->scan_flags |= htole32(IWM_MVM_LMAC_SCAN_FLAG_PASSIVE); 744 745 req->n_channels = iwm_mvm_lmac_scan_fill_channels(sc, 746 (struct iwm_scan_channel_cfg_lmac *)req->data, nssid); 747 748 ret = iwm_mvm_fill_probe_req(sc, 749 (struct iwm_scan_probe_req *)(req->data + 750 (sizeof(struct iwm_scan_channel_cfg_lmac) * 751 sc->ucode_capa.n_scan_channels))); 752 if (ret) { 753 free(req, M_DEVBUF); 754 return ret; 755 } 756 757 /* Specify the scan plan: We'll do one iteration. */ 758 req->schedule[0].iterations = 1; 759 req->schedule[0].full_scan_mul = 1; 760 761 if (iwm_mvm_scan_use_ebs(sc)) { 762 req->channel_opt[0].flags = 763 htole16(IWM_SCAN_CHANNEL_FLAG_EBS | 764 IWM_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 765 IWM_SCAN_CHANNEL_FLAG_CACHE_ADD); 766 req->channel_opt[0].non_ebs_ratio = 767 htole16(IWM_DENSE_EBS_SCAN_RATIO); 768 req->channel_opt[1].flags = 769 htole16(IWM_SCAN_CHANNEL_FLAG_EBS | 770 IWM_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 771 IWM_SCAN_CHANNEL_FLAG_CACHE_ADD); 772 req->channel_opt[1].non_ebs_ratio = 773 htole16(IWM_SPARSE_EBS_SCAN_RATIO); 774 } 775 776 ret = iwm_send_cmd(sc, &hcmd); 777 if (!ret) { 778 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 779 "Scan request was sent successfully\n"); 780 } 781 free(req, M_DEVBUF); 782 return ret; 783 } 784 785 static int 786 iwm_mvm_lmac_scan_abort(struct iwm_softc *sc) 787 { 788 int ret; 789 struct iwm_host_cmd hcmd = { 790 .id = IWM_SCAN_OFFLOAD_ABORT_CMD, 791 .len = { 0, }, 792 .data = { NULL, }, 793 .flags = IWM_CMD_SYNC, 794 }; 795 uint32_t status; 796 797 ret = iwm_mvm_send_cmd_status(sc, &hcmd, &status); 798 if (ret) 799 return ret; 800 801 if (status != IWM_CAN_ABORT_STATUS) { 802 /* 803 * The scan abort will return 1 for success or 804 * 2 for "failure". A failure condition can be 805 * due to simply not being in an active scan which 806 * can occur if we send the scan abort before the 807 * microcode has notified us that a scan is completed. 808 */ 809 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 810 "SCAN OFFLOAD ABORT ret %d.\n", status); 811 ret = ENOENT; 812 } 813 814 return ret; 815 } 816 817 static int 818 iwm_mvm_umac_scan_abort(struct iwm_softc *sc) 819 { 820 struct iwm_umac_scan_abort cmd = {}; 821 int uid, ret; 822 823 uid = 0; 824 cmd.uid = htole32(uid); 825 826 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Sending scan abort, uid %u\n", uid); 827 828 ret = iwm_mvm_send_cmd_pdu(sc, 829 iwm_cmd_id(IWM_SCAN_ABORT_UMAC, 830 IWM_ALWAYS_LONG_GROUP, 0), 831 0, sizeof(cmd), &cmd); 832 833 return ret; 834 } 835 836 int 837 iwm_mvm_scan_stop_wait(struct iwm_softc *sc) 838 { 839 struct iwm_notification_wait wait_scan_done; 840 static const uint16_t scan_done_notif[] = { IWM_SCAN_COMPLETE_UMAC, 841 IWM_SCAN_OFFLOAD_COMPLETE, }; 842 int ret; 843 844 iwm_init_notification_wait(sc->sc_notif_wait, &wait_scan_done, 845 scan_done_notif, nitems(scan_done_notif), 846 NULL, NULL); 847 848 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Preparing to stop scan\n"); 849 850 if (fw_has_capa(&sc->ucode_capa, IWM_UCODE_TLV_CAPA_UMAC_SCAN)) 851 ret = iwm_mvm_umac_scan_abort(sc); 852 else 853 ret = iwm_mvm_lmac_scan_abort(sc); 854 855 if (ret) { 856 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "couldn't stop scan\n"); 857 iwm_remove_notification(sc->sc_notif_wait, &wait_scan_done); 858 return ret; 859 } 860 861 IWM_UNLOCK(sc); 862 ret = iwm_wait_notification(sc->sc_notif_wait, &wait_scan_done, hz); 863 IWM_LOCK(sc); 864 865 return ret; 866 } 867