1 /* $OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $ */
4 * Copyright (c) 2014 genua mbh <info@genua.de>
5 * Copyright (c) 2014 Fixup Software Ltd.
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.
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.
21 * Based on BSD-licensed source modules in the Linux iwlwifi driver,
22 * which were used as the reference documentation for this implementation.
24 * Driver version we are currently based off of is
25 * Linux 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd)
27 ***********************************************************************
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.
34 * Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
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.
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.
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,
50 * The full GNU General Public License is included in this distribution
51 * in the file called COPYING.
53 * Contact Information:
54 * Intel Linux Wireless <ilw@linux.intel.com>
55 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
60 * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
61 * All rights reserved.
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
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
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.
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.
91 * Copyright (c) 2007-2010 Damien Bergamini <damien.bergamini@free.fr>
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.
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.
105 #include <sys/cdefs.h>
106 __FBSDID("$FreeBSD$");
108 #include "opt_wlan.h"
110 #include <sys/param.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>
127 #include <machine/bus.h>
128 #include <machine/endian.h>
129 #include <machine/resource.h>
131 #include <dev/pci/pcivar.h>
132 #include <dev/pci/pcireg.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>
143 #include <netinet/in.h>
144 #include <netinet/in_systm.h>
145 #include <netinet/if_ether.h>
146 #include <netinet/ip.h>
148 #include <net80211/ieee80211_var.h>
149 #include <net80211/ieee80211_regdomain.h>
150 #include <net80211/ieee80211_ratectl.h>
151 #include <net80211/ieee80211_radiotap.h>
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>
164 #define IWM_DENSE_EBS_SCAN_RATIO 5
165 #define IWM_SPARSE_EBS_SCAN_RATIO 1
168 iwm_mvm_scan_rx_chain(struct iwm_softc *sc)
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);
182 iwm_mvm_scan_rate_n_flags(struct iwm_softc *sc, int flags, int no_cck)
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;
195 tx_ant = (1 << sc->sc_scan_last_antenna) << IWM_RATE_MCS_ANT_POS;
197 if ((flags & IEEE80211_CHAN_2GHZ) && !no_cck)
198 return htole32(IWM_RATE_1M_PLCP | IWM_RATE_MCS_CCK_MSK |
201 return htole32(IWM_RATE_6M_PLCP | tx_ant);
206 iwm_mvm_ebs_status_str(enum iwm_scan_ebs_status status)
209 case IWM_SCAN_EBS_SUCCESS:
211 case IWM_SCAN_EBS_INACTIVE:
213 case IWM_SCAN_EBS_FAILED:
214 case IWM_SCAN_EBS_CHAN_NOT_FOUND:
221 iwm_mvm_offload_status_str(enum iwm_scan_offload_complete_status status)
223 return (status == IWM_SCAN_OFFLOAD_ABORTED) ? "aborted" : "completed";
228 iwm_mvm_rx_lmac_scan_complete_notif(struct iwm_softc *sc,
229 struct iwm_rx_packet *pkt)
231 struct iwm_periodic_scan_complete *scan_notif = (void *)pkt->data;
233 /* If this happens, the firmware has mistakenly sent an LMAC
234 * notification during UMAC scans -- warn and ignore it.
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",
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));
247 sc->last_ebs_successful =
248 scan_notif->ebs_status == IWM_SCAN_EBS_SUCCESS ||
249 scan_notif->ebs_status == IWM_SCAN_EBS_INACTIVE;
254 iwm_mvm_rx_umac_scan_complete_notif(struct iwm_softc *sc,
255 struct iwm_rx_packet *pkt)
257 struct iwm_umac_scan_complete *notif = (void *)pkt->data;
259 IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
260 "Scan completed, uid %u, status %s, EBS status %s\n",
262 iwm_mvm_offload_status_str(notif->status),
263 iwm_mvm_ebs_status_str(notif->ebs_status));
265 if (notif->ebs_status != IWM_SCAN_EBS_SUCCESS &&
266 notif->ebs_status != IWM_SCAN_EBS_INACTIVE)
267 sc->last_ebs_successful = FALSE;
271 iwm_mvm_scan_skip_channel(struct ieee80211_channel *c)
273 if (IEEE80211_IS_CHAN_2GHZ(c) && IEEE80211_IS_CHAN_B(c))
275 else if (IEEE80211_IS_CHAN_5GHZ(c) && IEEE80211_IS_CHAN_A(c))
282 iwm_mvm_lmac_scan_fill_channels(struct iwm_softc *sc,
283 struct iwm_scan_channel_cfg_lmac *chan, int n_ssids)
285 struct ieee80211com *ic = &sc->sc_ic;
286 struct ieee80211_scan_state *ss = ic->ic_scan;
287 struct ieee80211_channel *c;
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 */
297 * Catch other channels, in case we have 900MHz channels or
298 * something in the chanlist.
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);
307 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM,
308 "Adding channel %d (%d Mhz) to the list\n",
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);
327 iwm_mvm_umac_scan_fill_channels(struct iwm_softc *sc,
328 struct iwm_scan_channel_cfg_umac *chan, int n_ssids)
330 struct ieee80211com *ic = &sc->sc_ic;
331 struct ieee80211_channel *c;
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 */
341 * Catch other channels, in case we have 900MHz channels or
342 * something in the chanlist.
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);
351 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM,
352 "Adding channel %d (%d Mhz) to the list\n",
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));
366 iwm_mvm_fill_probe_req(struct iwm_softc *sc, struct iwm_scan_probe_req *preq)
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);
375 memset(preq, 0, sizeof(*preq));
377 /* Ensure enough space for header and SSID IE. */
378 if (remain < sizeof(*wh) + 2)
382 * Build a probe request frame. Most of the following code is a
383 * copy & paste of what is done in net80211.
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 */
394 frm = (uint8_t *)(wh + 1);
395 frm = ieee80211_add_ssid(frm, NULL, 0);
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;
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)
407 } else if (remain < 2 + rs->rs_nrates) {
410 preq->band_data[0].offset = htole16(frm - (uint8_t *)wh);
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);
418 if (fw_has_capa(&sc->ucode_capa,
419 IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) {
422 *frm++ = IEEE80211_ELEMID_DSPARMS;
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)
434 } else if (remain < 2 + rs->rs_nrates) {
437 preq->band_data[1].offset = htole16(frm - (uint8_t *)wh);
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);
446 /* Send 11n IEs on both 2GHz and 5GHz bands. */
447 preq->common_data.offset = htole16(frm - (uint8_t *)wh);
450 if (ic->ic_flags & IEEE80211_F_HTON) {
453 frm = ieee80211_add_htcaps(frm, ic);
454 /* XXX add WME info? */
457 preq->common_data.len = htole16(frm - pos);
463 iwm_mvm_config_umac_scan(struct iwm_softc *sc)
465 struct ieee80211com *ic = &sc->sc_ic;
466 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
468 struct iwm_scan_config *scan_config;
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,
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);
484 cmd_size = sizeof(*scan_config) + sc->ucode_capa.n_scan_channels;
486 scan_config = malloc(cmd_size, M_DEVBUF, M_NOWAIT | M_ZERO);
487 if (scan_config == NULL)
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));
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);
503 IEEE80211_ADDR_COPY(scan_config->mac_addr,
504 vap ? vap->iv_myaddr : ic->ic_macaddr);
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;
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 */
517 * Catch other channels, in case we have 900MHz channels or
518 * something in the chanlist.
520 if (iwm_mvm_scan_skip_channel(c))
522 scan_config->channel_array[nchan++] =
523 ieee80211_mhz2ieee(c->ic_freq, 0);
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);
538 hcmd.data[0] = scan_config;
539 hcmd.len[0] = cmd_size;
541 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Sending UMAC scan config\n");
543 ret = iwm_send_cmd(sc, &hcmd);
545 IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
546 "UMAC scan config was sent successfully\n");
548 free(scan_config, M_DEVBUF);
553 iwm_mvm_scan_use_ebs(struct iwm_softc *sc)
555 const struct iwm_ucode_capabilities *capa = &sc->ucode_capa;
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.
563 return ((capa->flags & IWM_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
564 sc->last_ebs_successful);
568 iwm_mvm_umac_scan(struct iwm_softc *sc)
570 struct iwm_host_cmd hcmd = {
571 .id = iwm_cmd_id(IWM_SCAN_REQ_UMAC, IWM_ALWAYS_LONG_GROUP, 0),
574 .flags = IWM_CMD_SYNC,
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;
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)
589 req = malloc(req_len, M_DEVBUF, M_NOWAIT | M_ZERO);
593 hcmd.len[0] = (uint16_t)req_len;
594 hcmd.data[0] = (void *)req;
596 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Handling ieee80211 scan request\n");
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;
606 req->scan_priority = htole32(IWM_SCAN_PRIORITY_HIGH);
607 req->ooc_priority = htole32(IWM_SCAN_PRIORITY_HIGH);
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);
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);
617 tail = (void *)((char *)&req->data +
618 sizeof(struct iwm_scan_channel_cfg_umac) *
619 sc->ucode_capa.n_scan_channels);
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,
626 memcpy(tail->direct_scan[i].ssid, ss->ss_ssid[i].ssid,
627 tail->direct_scan[i].len);
631 req->general_flags |=
632 htole32(IWM_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT);
634 req->general_flags |= htole32(IWM_UMAC_SCAN_GEN_FLAGS_PASSIVE);
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;
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);
646 ret = iwm_mvm_fill_probe_req(sc, &tail->preq);
652 /* Specify the scan plan: We'll do one iteration. */
653 tail->schedule[0].interval = 0;
654 tail->schedule[0].iter_count = 1;
656 ret = iwm_send_cmd(sc, &hcmd);
658 IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
659 "Scan request was sent successfully\n");
665 iwm_mvm_lmac_scan(struct iwm_softc *sc)
667 struct iwm_host_cmd hcmd = {
668 .id = IWM_SCAN_OFFLOAD_REQUEST_CMD,
671 .flags = IWM_CMD_SYNC,
673 struct ieee80211_scan_state *ss = sc->sc_ic.ic_scan;
674 struct iwm_scan_req_lmac *req;
679 IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
680 "Handling ieee80211 scan request\n");
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)
687 req = malloc(req_len, M_DEVBUF, M_NOWAIT | M_ZERO);
691 hcmd.len[0] = (uint16_t)req_len;
692 hcmd.data[0] = (void *)req;
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;
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);
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);
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);
718 htole32(IWM_MAC_FILTER_ACCEPT_GRP | IWM_MAC_FILTER_IN_BEACON);
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;
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;
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,
740 memcpy(req->direct_scan[i].ssid, ss->ss_ssid[i].ssid,
741 req->direct_scan[i].len);
746 htole32(IWM_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION);
748 req->scan_flags |= htole32(IWM_MVM_LMAC_SCAN_FLAG_PASSIVE);
750 req->n_channels = iwm_mvm_lmac_scan_fill_channels(sc,
751 (struct iwm_scan_channel_cfg_lmac *)req->data, nssid);
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)));
762 /* Specify the scan plan: We'll do one iteration. */
763 req->schedule[0].iterations = 1;
764 req->schedule[0].full_scan_mul = 1;
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);
781 ret = iwm_send_cmd(sc, &hcmd);
783 IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
784 "Scan request was sent successfully\n");
791 iwm_mvm_lmac_scan_abort(struct iwm_softc *sc)
794 struct iwm_host_cmd hcmd = {
795 .id = IWM_SCAN_OFFLOAD_ABORT_CMD,
798 .flags = IWM_CMD_SYNC,
802 ret = iwm_mvm_send_cmd_status(sc, &hcmd, &status);
806 if (status != IWM_CAN_ABORT_STATUS) {
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.
814 IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
815 "SCAN OFFLOAD ABORT ret %d.\n", status);
823 iwm_mvm_umac_scan_abort(struct iwm_softc *sc)
825 struct iwm_umac_scan_abort cmd = {};
829 cmd.uid = htole32(uid);
831 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Sending scan abort, uid %u\n", uid);
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);
842 iwm_mvm_scan_stop_wait(struct iwm_softc *sc)
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, };
849 iwm_init_notification_wait(sc->sc_notif_wait, &wait_scan_done,
850 scan_done_notif, nitems(scan_done_notif),
853 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Preparing to stop scan\n");
855 if (fw_has_capa(&sc->ucode_capa, IWM_UCODE_TLV_CAPA_UMAC_SCAN))
856 ret = iwm_mvm_umac_scan_abort(sc);
858 ret = iwm_mvm_lmac_scan_abort(sc);
861 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "couldn't stop scan\n");
862 iwm_remove_notification(sc->sc_notif_wait, &wait_scan_done);
867 ret = iwm_wait_notification(sc->sc_notif_wait, &wait_scan_done, hz);