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 #ifdef IWM_DEBUG 205 static const char * 206 iwm_mvm_ebs_status_str(enum iwm_scan_ebs_status status) 207 { 208 switch (status) { 209 case IWM_SCAN_EBS_SUCCESS: 210 return "successful"; 211 case IWM_SCAN_EBS_INACTIVE: 212 return "inactive"; 213 case IWM_SCAN_EBS_FAILED: 214 case IWM_SCAN_EBS_CHAN_NOT_FOUND: 215 default: 216 return "failed"; 217 } 218 } 219 220 static const char * 221 iwm_mvm_offload_status_str(enum iwm_scan_offload_complete_status status) 222 { 223 return (status == IWM_SCAN_OFFLOAD_ABORTED) ? "aborted" : "completed"; 224 } 225 #endif 226 227 void 228 iwm_mvm_rx_lmac_scan_complete_notif(struct iwm_softc *sc, 229 struct iwm_rx_packet *pkt) 230 { 231 struct iwm_periodic_scan_complete *scan_notif = (void *)pkt->data; 232 233 /* If this happens, the firmware has mistakenly sent an LMAC 234 * notification during UMAC scans -- warn and ignore it. 235 */ 236 if (fw_has_capa(&sc->ucode_capa, IWM_UCODE_TLV_CAPA_UMAC_SCAN)) { 237 device_printf(sc->sc_dev, 238 "%s: Mistakenly got LMAC notification during UMAC scan\n", 239 __func__); 240 return; 241 } 242 243 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Regular scan %s, EBS status %s (FW)\n", 244 iwm_mvm_offload_status_str(scan_notif->status), 245 iwm_mvm_ebs_status_str(scan_notif->ebs_status)); 246 247 sc->last_ebs_successful = 248 scan_notif->ebs_status == IWM_SCAN_EBS_SUCCESS || 249 scan_notif->ebs_status == IWM_SCAN_EBS_INACTIVE; 250 251 } 252 253 void 254 iwm_mvm_rx_umac_scan_complete_notif(struct iwm_softc *sc, 255 struct iwm_rx_packet *pkt) 256 { 257 struct iwm_umac_scan_complete *notif = (void *)pkt->data; 258 259 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 260 "Scan completed, uid %u, status %s, EBS status %s\n", 261 le32toh(notif->uid), 262 iwm_mvm_offload_status_str(notif->status), 263 iwm_mvm_ebs_status_str(notif->ebs_status)); 264 265 if (notif->ebs_status != IWM_SCAN_EBS_SUCCESS && 266 notif->ebs_status != IWM_SCAN_EBS_INACTIVE) 267 sc->last_ebs_successful = FALSE; 268 } 269 270 static int 271 iwm_mvm_scan_skip_channel(struct ieee80211_channel *c) 272 { 273 if (IEEE80211_IS_CHAN_2GHZ(c) && IEEE80211_IS_CHAN_B(c)) 274 return 0; 275 else if (IEEE80211_IS_CHAN_5GHZ(c) && IEEE80211_IS_CHAN_A(c)) 276 return 0; 277 else 278 return 1; 279 } 280 281 static uint8_t 282 iwm_mvm_lmac_scan_fill_channels(struct iwm_softc *sc, 283 struct iwm_scan_channel_cfg_lmac *chan, int n_ssids) 284 { 285 struct ieee80211com *ic = &sc->sc_ic; 286 struct ieee80211_scan_state *ss = ic->ic_scan; 287 struct ieee80211_channel *c; 288 uint8_t nchan; 289 int j; 290 291 for (nchan = j = 0; 292 j < ic->ic_nchans && nchan < sc->ucode_capa.n_scan_channels; j++) { 293 c = &ic->ic_channels[j]; 294 /* For 2GHz, only populate 11b channels */ 295 /* For 5GHz, only populate 11a channels */ 296 /* 297 * Catch other channels, in case we have 900MHz channels or 298 * something in the chanlist. 299 */ 300 if (iwm_mvm_scan_skip_channel(c)) { 301 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, 302 "%s: skipping channel (freq=%d, ieee=%d, flags=0x%08x)\n", 303 __func__, c->ic_freq, c->ic_ieee, c->ic_flags); 304 continue; 305 } 306 307 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, 308 "Adding channel %d (%d Mhz) to the list\n", 309 nchan, c->ic_freq); 310 chan->channel_num = htole16(ieee80211_mhz2ieee(c->ic_freq, 0)); 311 chan->iter_count = htole16(1); 312 chan->iter_interval = htole32(0); 313 chan->flags = htole32(IWM_UNIFIED_SCAN_CHANNEL_PARTIAL); 314 chan->flags |= htole32(IWM_SCAN_CHANNEL_NSSIDS(n_ssids)); 315 /* XXX IEEE80211_SCAN_NOBCAST flag is never set. */ 316 if (!IEEE80211_IS_CHAN_PASSIVE(c) && 317 (!(ss->ss_flags & IEEE80211_SCAN_NOBCAST) || n_ssids != 0)) 318 chan->flags |= htole32(IWM_SCAN_CHANNEL_TYPE_ACTIVE); 319 chan++; 320 nchan++; 321 } 322 323 return nchan; 324 } 325 326 static uint8_t 327 iwm_mvm_umac_scan_fill_channels(struct iwm_softc *sc, 328 struct iwm_scan_channel_cfg_umac *chan, int n_ssids) 329 { 330 struct ieee80211com *ic = &sc->sc_ic; 331 struct ieee80211_channel *c; 332 uint8_t nchan; 333 int j; 334 335 for (nchan = j = 0; 336 j < ic->ic_nchans && nchan < sc->ucode_capa.n_scan_channels; j++) { 337 c = &ic->ic_channels[j]; 338 /* For 2GHz, only populate 11b channels */ 339 /* For 5GHz, only populate 11a channels */ 340 /* 341 * Catch other channels, in case we have 900MHz channels or 342 * something in the chanlist. 343 */ 344 if (iwm_mvm_scan_skip_channel(c)) { 345 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, 346 "%s: skipping channel (freq=%d, ieee=%d, flags=0x%08x)\n", 347 __func__, c->ic_freq, c->ic_ieee, c->ic_flags); 348 continue; 349 } 350 351 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, 352 "Adding channel %d (%d Mhz) to the list\n", 353 nchan, c->ic_freq); 354 chan->channel_num = ieee80211_mhz2ieee(c->ic_freq, 0); 355 chan->iter_count = 1; 356 chan->iter_interval = htole16(0); 357 chan->flags = htole32(IWM_SCAN_CHANNEL_UMAC_NSSIDS(n_ssids)); 358 chan++; 359 nchan++; 360 } 361 362 return nchan; 363 } 364 365 static int 366 iwm_mvm_fill_probe_req(struct iwm_softc *sc, struct iwm_scan_probe_req *preq) 367 { 368 struct ieee80211com *ic = &sc->sc_ic; 369 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 370 struct ieee80211_frame *wh = (struct ieee80211_frame *)preq->buf; 371 struct ieee80211_rateset *rs; 372 size_t remain = sizeof(preq->buf); 373 uint8_t *frm, *pos; 374 375 memset(preq, 0, sizeof(*preq)); 376 377 /* Ensure enough space for header and SSID IE. */ 378 if (remain < sizeof(*wh) + 2) 379 return ENOBUFS; 380 381 /* 382 * Build a probe request frame. Most of the following code is a 383 * copy & paste of what is done in net80211. 384 */ 385 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 386 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 387 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 388 IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr); 389 IEEE80211_ADDR_COPY(wh->i_addr2, vap ? vap->iv_myaddr : ic->ic_macaddr); 390 IEEE80211_ADDR_COPY(wh->i_addr3, ieee80211broadcastaddr); 391 *(uint16_t *)&wh->i_dur[0] = 0; /* filled by HW */ 392 *(uint16_t *)&wh->i_seq[0] = 0; /* filled by HW */ 393 394 frm = (uint8_t *)(wh + 1); 395 frm = ieee80211_add_ssid(frm, NULL, 0); 396 397 /* Tell the firmware where the MAC header is. */ 398 preq->mac_header.offset = 0; 399 preq->mac_header.len = htole16(frm - (uint8_t *)wh); 400 remain -= frm - (uint8_t *)wh; 401 402 /* Fill in 2GHz IEs and tell firmware where they are. */ 403 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 404 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 405 if (remain < 4 + rs->rs_nrates) 406 return ENOBUFS; 407 } else if (remain < 2 + rs->rs_nrates) { 408 return ENOBUFS; 409 } 410 preq->band_data[0].offset = htole16(frm - (uint8_t *)wh); 411 pos = frm; 412 frm = ieee80211_add_rates(frm, rs); 413 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 414 frm = ieee80211_add_xrates(frm, rs); 415 preq->band_data[0].len = htole16(frm - pos); 416 remain -= frm - pos; 417 418 if (fw_has_capa(&sc->ucode_capa, 419 IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) { 420 if (remain < 3) 421 return ENOBUFS; 422 *frm++ = IEEE80211_ELEMID_DSPARMS; 423 *frm++ = 1; 424 *frm++ = 0; 425 remain -= 3; 426 } 427 428 if (sc->nvm_data->sku_cap_band_52GHz_enable) { 429 /* Fill in 5GHz IEs. */ 430 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 431 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 432 if (remain < 4 + rs->rs_nrates) 433 return ENOBUFS; 434 } else if (remain < 2 + rs->rs_nrates) { 435 return ENOBUFS; 436 } 437 preq->band_data[1].offset = htole16(frm - (uint8_t *)wh); 438 pos = frm; 439 frm = ieee80211_add_rates(frm, rs); 440 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 441 frm = ieee80211_add_xrates(frm, rs); 442 preq->band_data[1].len = htole16(frm - pos); 443 remain -= frm - pos; 444 } 445 446 /* Send 11n IEs on both 2GHz and 5GHz bands. */ 447 preq->common_data.offset = htole16(frm - (uint8_t *)wh); 448 pos = frm; 449 #if 0 450 if (ic->ic_flags & IEEE80211_F_HTON) { 451 if (remain < 28) 452 return ENOBUFS; 453 frm = ieee80211_add_htcaps(frm, ic); 454 /* XXX add WME info? */ 455 } 456 #endif 457 preq->common_data.len = htole16(frm - pos); 458 459 return 0; 460 } 461 462 int 463 iwm_mvm_config_umac_scan(struct iwm_softc *sc) 464 { 465 struct ieee80211com *ic = &sc->sc_ic; 466 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 467 468 struct iwm_scan_config *scan_config; 469 int ret, j, nchan; 470 size_t cmd_size; 471 struct ieee80211_channel *c; 472 struct iwm_host_cmd hcmd = { 473 .id = iwm_cmd_id(IWM_SCAN_CFG_CMD, IWM_ALWAYS_LONG_GROUP, 0), 474 .flags = IWM_CMD_SYNC, 475 }; 476 static const uint32_t rates = (IWM_SCAN_CONFIG_RATE_1M | 477 IWM_SCAN_CONFIG_RATE_2M | IWM_SCAN_CONFIG_RATE_5M | 478 IWM_SCAN_CONFIG_RATE_11M | IWM_SCAN_CONFIG_RATE_6M | 479 IWM_SCAN_CONFIG_RATE_9M | IWM_SCAN_CONFIG_RATE_12M | 480 IWM_SCAN_CONFIG_RATE_18M | IWM_SCAN_CONFIG_RATE_24M | 481 IWM_SCAN_CONFIG_RATE_36M | IWM_SCAN_CONFIG_RATE_48M | 482 IWM_SCAN_CONFIG_RATE_54M); 483 484 cmd_size = sizeof(*scan_config) + sc->ucode_capa.n_scan_channels; 485 486 scan_config = malloc(cmd_size, M_DEVBUF, M_NOWAIT | M_ZERO); 487 if (scan_config == NULL) 488 return ENOMEM; 489 490 scan_config->tx_chains = htole32(iwm_mvm_get_valid_tx_ant(sc)); 491 scan_config->rx_chains = htole32(iwm_mvm_get_valid_rx_ant(sc)); 492 scan_config->legacy_rates = htole32(rates | 493 IWM_SCAN_CONFIG_SUPPORTED_RATE(rates)); 494 495 /* These timings correspond to iwlwifi's UNASSOC scan. */ 496 scan_config->dwell_active = 10; 497 scan_config->dwell_passive = 110; 498 scan_config->dwell_fragmented = 44; 499 scan_config->dwell_extended = 90; 500 scan_config->out_of_channel_time = htole32(0); 501 scan_config->suspend_time = htole32(0); 502 503 IEEE80211_ADDR_COPY(scan_config->mac_addr, 504 vap ? vap->iv_myaddr : ic->ic_macaddr); 505 506 scan_config->bcast_sta_id = sc->sc_aux_sta.sta_id; 507 scan_config->channel_flags = IWM_CHANNEL_FLAG_EBS | 508 IWM_CHANNEL_FLAG_ACCURATE_EBS | IWM_CHANNEL_FLAG_EBS_ADD | 509 IWM_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 510 511 for (nchan = j = 0; 512 j < ic->ic_nchans && nchan < sc->ucode_capa.n_scan_channels; j++) { 513 c = &ic->ic_channels[j]; 514 /* For 2GHz, only populate 11b channels */ 515 /* For 5GHz, only populate 11a channels */ 516 /* 517 * Catch other channels, in case we have 900MHz channels or 518 * something in the chanlist. 519 */ 520 if (iwm_mvm_scan_skip_channel(c)) 521 continue; 522 scan_config->channel_array[nchan++] = 523 ieee80211_mhz2ieee(c->ic_freq, 0); 524 } 525 526 scan_config->flags = htole32(IWM_SCAN_CONFIG_FLAG_ACTIVATE | 527 IWM_SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 528 IWM_SCAN_CONFIG_FLAG_SET_TX_CHAINS | 529 IWM_SCAN_CONFIG_FLAG_SET_RX_CHAINS | 530 IWM_SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 531 IWM_SCAN_CONFIG_FLAG_SET_ALL_TIMES | 532 IWM_SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 533 IWM_SCAN_CONFIG_FLAG_SET_MAC_ADDR | 534 IWM_SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS| 535 IWM_SCAN_CONFIG_N_CHANNELS(nchan) | 536 IWM_SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 537 538 hcmd.data[0] = scan_config; 539 hcmd.len[0] = cmd_size; 540 541 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Sending UMAC scan config\n"); 542 543 ret = iwm_send_cmd(sc, &hcmd); 544 if (!ret) 545 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 546 "UMAC scan config was sent successfully\n"); 547 548 free(scan_config, M_DEVBUF); 549 return ret; 550 } 551 552 static boolean_t 553 iwm_mvm_scan_use_ebs(struct iwm_softc *sc) 554 { 555 const struct iwm_ucode_capabilities *capa = &sc->ucode_capa; 556 557 /* We can only use EBS if: 558 * 1. the feature is supported; 559 * 2. the last EBS was successful; 560 * 3. if only single scan, the single scan EBS API is supported; 561 * 4. it's not a p2p find operation. 562 */ 563 return ((capa->flags & IWM_UCODE_TLV_FLAGS_EBS_SUPPORT) && 564 sc->last_ebs_successful); 565 } 566 567 int 568 iwm_mvm_umac_scan(struct iwm_softc *sc) 569 { 570 struct iwm_host_cmd hcmd = { 571 .id = iwm_cmd_id(IWM_SCAN_REQ_UMAC, IWM_ALWAYS_LONG_GROUP, 0), 572 .len = { 0, }, 573 .data = { NULL, }, 574 .flags = IWM_CMD_SYNC, 575 }; 576 struct ieee80211_scan_state *ss = sc->sc_ic.ic_scan; 577 struct iwm_scan_req_umac *req; 578 struct iwm_scan_req_umac_tail *tail; 579 size_t req_len; 580 uint8_t i, nssid; 581 int ret; 582 583 req_len = sizeof(struct iwm_scan_req_umac) + 584 (sizeof(struct iwm_scan_channel_cfg_umac) * 585 sc->ucode_capa.n_scan_channels) + 586 sizeof(struct iwm_scan_req_umac_tail); 587 if (req_len > IWM_MAX_CMD_PAYLOAD_SIZE) 588 return ENOMEM; 589 req = malloc(req_len, M_DEVBUF, M_NOWAIT | M_ZERO); 590 if (req == NULL) 591 return ENOMEM; 592 593 hcmd.len[0] = (uint16_t)req_len; 594 hcmd.data[0] = (void *)req; 595 596 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Handling ieee80211 scan request\n"); 597 598 /* These timings correspond to iwlwifi's UNASSOC scan. */ 599 req->active_dwell = 10; 600 req->passive_dwell = 110; 601 req->fragmented_dwell = 44; 602 req->extended_dwell = 90; 603 req->max_out_time = 0; 604 req->suspend_time = 0; 605 606 req->scan_priority = htole32(IWM_SCAN_PRIORITY_HIGH); 607 req->ooc_priority = htole32(IWM_SCAN_PRIORITY_HIGH); 608 609 nssid = MIN(ss->ss_nssid, IWM_PROBE_OPTION_MAX); 610 req->n_channels = iwm_mvm_umac_scan_fill_channels(sc, 611 (struct iwm_scan_channel_cfg_umac *)req->data, nssid); 612 613 req->general_flags = htole32(IWM_UMAC_SCAN_GEN_FLAGS_PASS_ALL | 614 IWM_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE | 615 IWM_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL); 616 617 tail = (void *)((char *)&req->data + 618 sizeof(struct iwm_scan_channel_cfg_umac) * 619 sc->ucode_capa.n_scan_channels); 620 621 /* Check if we're doing an active directed scan. */ 622 for (i = 0; i < nssid; i++) { 623 tail->direct_scan[i].id = IEEE80211_ELEMID_SSID; 624 tail->direct_scan[i].len = MIN(ss->ss_ssid[i].len, 625 IEEE80211_NWID_LEN); 626 memcpy(tail->direct_scan[i].ssid, ss->ss_ssid[i].ssid, 627 tail->direct_scan[i].len); 628 /* XXX debug */ 629 } 630 if (nssid != 0) { 631 req->general_flags |= 632 htole32(IWM_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT); 633 } else 634 req->general_flags |= htole32(IWM_UMAC_SCAN_GEN_FLAGS_PASSIVE); 635 636 if (iwm_mvm_scan_use_ebs(sc)) 637 req->channel_flags = IWM_SCAN_CHANNEL_FLAG_EBS | 638 IWM_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 639 IWM_SCAN_CHANNEL_FLAG_CACHE_ADD; 640 641 if (fw_has_capa(&sc->ucode_capa, 642 IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 643 req->general_flags |= 644 htole32(IWM_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED); 645 646 ret = iwm_mvm_fill_probe_req(sc, &tail->preq); 647 if (ret) { 648 free(req, M_DEVBUF); 649 return ret; 650 } 651 652 /* Specify the scan plan: We'll do one iteration. */ 653 tail->schedule[0].interval = 0; 654 tail->schedule[0].iter_count = 1; 655 656 ret = iwm_send_cmd(sc, &hcmd); 657 if (!ret) 658 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 659 "Scan request was sent successfully\n"); 660 free(req, M_DEVBUF); 661 return ret; 662 } 663 664 int 665 iwm_mvm_lmac_scan(struct iwm_softc *sc) 666 { 667 struct iwm_host_cmd hcmd = { 668 .id = IWM_SCAN_OFFLOAD_REQUEST_CMD, 669 .len = { 0, }, 670 .data = { NULL, }, 671 .flags = IWM_CMD_SYNC, 672 }; 673 struct ieee80211_scan_state *ss = sc->sc_ic.ic_scan; 674 struct iwm_scan_req_lmac *req; 675 size_t req_len; 676 uint8_t i, nssid; 677 int ret; 678 679 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 680 "Handling ieee80211 scan request\n"); 681 682 req_len = sizeof(struct iwm_scan_req_lmac) + 683 (sizeof(struct iwm_scan_channel_cfg_lmac) * 684 sc->ucode_capa.n_scan_channels) + sizeof(struct iwm_scan_probe_req); 685 if (req_len > IWM_MAX_CMD_PAYLOAD_SIZE) 686 return ENOMEM; 687 req = malloc(req_len, M_DEVBUF, M_NOWAIT | M_ZERO); 688 if (req == NULL) 689 return ENOMEM; 690 691 hcmd.len[0] = (uint16_t)req_len; 692 hcmd.data[0] = (void *)req; 693 694 /* These timings correspond to iwlwifi's UNASSOC scan. */ 695 req->active_dwell = 10; 696 req->passive_dwell = 110; 697 req->fragmented_dwell = 44; 698 req->extended_dwell = 90; 699 req->max_out_time = 0; 700 req->suspend_time = 0; 701 702 req->scan_prio = htole32(IWM_SCAN_PRIORITY_HIGH); 703 req->rx_chain_select = iwm_mvm_scan_rx_chain(sc); 704 req->iter_num = htole32(1); 705 req->delay = 0; 706 707 req->scan_flags = htole32(IWM_MVM_LMAC_SCAN_FLAG_PASS_ALL | 708 IWM_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE | 709 IWM_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL); 710 if (fw_has_capa(&sc->ucode_capa, 711 IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 712 req->scan_flags |= htole32(IWM_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED); 713 714 req->flags = htole32(IWM_PHY_BAND_24); 715 if (sc->nvm_data->sku_cap_band_52GHz_enable) 716 req->flags |= htole32(IWM_PHY_BAND_5); 717 req->filter_flags = 718 htole32(IWM_MAC_FILTER_ACCEPT_GRP | IWM_MAC_FILTER_IN_BEACON); 719 720 /* Tx flags 2 GHz. */ 721 req->tx_cmd[0].tx_flags = htole32(IWM_TX_CMD_FLG_SEQ_CTL | 722 IWM_TX_CMD_FLG_BT_DIS); 723 req->tx_cmd[0].rate_n_flags = 724 iwm_mvm_scan_rate_n_flags(sc, IEEE80211_CHAN_2GHZ, 1/*XXX*/); 725 req->tx_cmd[0].sta_id = sc->sc_aux_sta.sta_id; 726 727 /* Tx flags 5 GHz. */ 728 req->tx_cmd[1].tx_flags = htole32(IWM_TX_CMD_FLG_SEQ_CTL | 729 IWM_TX_CMD_FLG_BT_DIS); 730 req->tx_cmd[1].rate_n_flags = 731 iwm_mvm_scan_rate_n_flags(sc, IEEE80211_CHAN_5GHZ, 1/*XXX*/); 732 req->tx_cmd[1].sta_id = sc->sc_aux_sta.sta_id; 733 734 /* Check if we're doing an active directed scan. */ 735 nssid = MIN(ss->ss_nssid, IWM_PROBE_OPTION_MAX); 736 for (i = 0; i < nssid; i++) { 737 req->direct_scan[i].id = IEEE80211_ELEMID_SSID; 738 req->direct_scan[i].len = MIN(ss->ss_ssid[i].len, 739 IEEE80211_NWID_LEN); 740 memcpy(req->direct_scan[i].ssid, ss->ss_ssid[i].ssid, 741 req->direct_scan[i].len); 742 /* XXX debug */ 743 } 744 if (nssid != 0) { 745 req->scan_flags |= 746 htole32(IWM_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION); 747 } else 748 req->scan_flags |= htole32(IWM_MVM_LMAC_SCAN_FLAG_PASSIVE); 749 750 req->n_channels = iwm_mvm_lmac_scan_fill_channels(sc, 751 (struct iwm_scan_channel_cfg_lmac *)req->data, nssid); 752 753 ret = iwm_mvm_fill_probe_req(sc, 754 (struct iwm_scan_probe_req *)(req->data + 755 (sizeof(struct iwm_scan_channel_cfg_lmac) * 756 sc->ucode_capa.n_scan_channels))); 757 if (ret) { 758 free(req, M_DEVBUF); 759 return ret; 760 } 761 762 /* Specify the scan plan: We'll do one iteration. */ 763 req->schedule[0].iterations = 1; 764 req->schedule[0].full_scan_mul = 1; 765 766 if (iwm_mvm_scan_use_ebs(sc)) { 767 req->channel_opt[0].flags = 768 htole16(IWM_SCAN_CHANNEL_FLAG_EBS | 769 IWM_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 770 IWM_SCAN_CHANNEL_FLAG_CACHE_ADD); 771 req->channel_opt[0].non_ebs_ratio = 772 htole16(IWM_DENSE_EBS_SCAN_RATIO); 773 req->channel_opt[1].flags = 774 htole16(IWM_SCAN_CHANNEL_FLAG_EBS | 775 IWM_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 776 IWM_SCAN_CHANNEL_FLAG_CACHE_ADD); 777 req->channel_opt[1].non_ebs_ratio = 778 htole16(IWM_SPARSE_EBS_SCAN_RATIO); 779 } 780 781 ret = iwm_send_cmd(sc, &hcmd); 782 if (!ret) { 783 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 784 "Scan request was sent successfully\n"); 785 } 786 free(req, M_DEVBUF); 787 return ret; 788 } 789 790 static int 791 iwm_mvm_lmac_scan_abort(struct iwm_softc *sc) 792 { 793 int ret; 794 struct iwm_host_cmd hcmd = { 795 .id = IWM_SCAN_OFFLOAD_ABORT_CMD, 796 .len = { 0, }, 797 .data = { NULL, }, 798 .flags = IWM_CMD_SYNC, 799 }; 800 uint32_t status; 801 802 ret = iwm_mvm_send_cmd_status(sc, &hcmd, &status); 803 if (ret) 804 return ret; 805 806 if (status != IWM_CAN_ABORT_STATUS) { 807 /* 808 * The scan abort will return 1 for success or 809 * 2 for "failure". A failure condition can be 810 * due to simply not being in an active scan which 811 * can occur if we send the scan abort before the 812 * microcode has notified us that a scan is completed. 813 */ 814 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 815 "SCAN OFFLOAD ABORT ret %d.\n", status); 816 ret = ENOENT; 817 } 818 819 return ret; 820 } 821 822 static int 823 iwm_mvm_umac_scan_abort(struct iwm_softc *sc) 824 { 825 struct iwm_umac_scan_abort cmd = {}; 826 int uid, ret; 827 828 uid = 0; 829 cmd.uid = htole32(uid); 830 831 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Sending scan abort, uid %u\n", uid); 832 833 ret = iwm_mvm_send_cmd_pdu(sc, 834 iwm_cmd_id(IWM_SCAN_ABORT_UMAC, 835 IWM_ALWAYS_LONG_GROUP, 0), 836 0, sizeof(cmd), &cmd); 837 838 return ret; 839 } 840 841 int 842 iwm_mvm_scan_stop_wait(struct iwm_softc *sc) 843 { 844 struct iwm_notification_wait wait_scan_done; 845 static const uint16_t scan_done_notif[] = { IWM_SCAN_COMPLETE_UMAC, 846 IWM_SCAN_OFFLOAD_COMPLETE, }; 847 int ret; 848 849 iwm_init_notification_wait(sc->sc_notif_wait, &wait_scan_done, 850 scan_done_notif, nitems(scan_done_notif), 851 NULL, NULL); 852 853 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Preparing to stop scan\n"); 854 855 if (fw_has_capa(&sc->ucode_capa, IWM_UCODE_TLV_CAPA_UMAC_SCAN)) 856 ret = iwm_mvm_umac_scan_abort(sc); 857 else 858 ret = iwm_mvm_lmac_scan_abort(sc); 859 860 if (ret) { 861 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "couldn't stop scan\n"); 862 iwm_remove_notification(sc->sc_notif_wait, &wait_scan_done); 863 return ret; 864 } 865 866 IWM_UNLOCK(sc); 867 ret = iwm_wait_notification(sc->sc_notif_wait, &wait_scan_done, hz); 868 IWM_LOCK(sc); 869 870 return ret; 871 } 872