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"
111 #include <sys/param.h>
113 #include <sys/conf.h>
114 #include <sys/endian.h>
115 #include <sys/firmware.h>
116 #include <sys/kernel.h>
117 #include <sys/malloc.h>
118 #include <sys/mbuf.h>
119 #include <sys/mutex.h>
120 #include <sys/module.h>
121 #include <sys/proc.h>
122 #include <sys/rman.h>
123 #include <sys/socket.h>
124 #include <sys/sockio.h>
125 #include <sys/sysctl.h>
126 #include <sys/linker.h>
128 #include <machine/bus.h>
129 #include <machine/endian.h>
130 #include <machine/resource.h>
132 #include <dev/pci/pcivar.h>
133 #include <dev/pci/pcireg.h>
138 #include <net/if_var.h>
139 #include <net/if_arp.h>
140 #include <net/if_dl.h>
141 #include <net/if_media.h>
142 #include <net/if_types.h>
144 #include <netinet/in.h>
145 #include <netinet/in_systm.h>
146 #include <netinet/if_ether.h>
147 #include <netinet/ip.h>
149 #include <net80211/ieee80211_var.h>
150 #include <net80211/ieee80211_regdomain.h>
151 #include <net80211/ieee80211_ratectl.h>
152 #include <net80211/ieee80211_radiotap.h>
154 #include <dev/iwm/if_iwmreg.h>
155 #include <dev/iwm/if_iwmvar.h>
156 #include <dev/iwm/if_iwm_debug.h>
157 #include <dev/iwm/if_iwm_notif_wait.h>
158 #include <dev/iwm/if_iwm_util.h>
159 #include <dev/iwm/if_iwm_scan.h>
165 #define IWM_DENSE_EBS_SCAN_RATIO 5
166 #define IWM_SPARSE_EBS_SCAN_RATIO 1
169 iwm_mvm_scan_rx_chain(struct iwm_softc *sc)
174 rx_ant = iwm_mvm_get_valid_rx_ant(sc);
175 rx_chain = rx_ant << IWM_PHY_RX_CHAIN_VALID_POS;
176 rx_chain |= rx_ant << IWM_PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
177 rx_chain |= rx_ant << IWM_PHY_RX_CHAIN_FORCE_SEL_POS;
178 rx_chain |= 0x1 << IWM_PHY_RX_CHAIN_DRIVER_FORCE_POS;
179 return htole16(rx_chain);
183 iwm_mvm_scan_rxon_flags(struct ieee80211_channel *c)
185 if (IEEE80211_IS_CHAN_2GHZ(c))
186 return htole32(IWM_PHY_BAND_24);
188 return htole32(IWM_PHY_BAND_5);
192 iwm_mvm_scan_rate_n_flags(struct iwm_softc *sc, int flags, int no_cck)
197 for (i = 0, ind = sc->sc_scan_last_antenna;
198 i < IWM_RATE_MCS_ANT_NUM; i++) {
199 ind = (ind + 1) % IWM_RATE_MCS_ANT_NUM;
200 if (iwm_mvm_get_valid_tx_ant(sc) & (1 << ind)) {
201 sc->sc_scan_last_antenna = ind;
205 tx_ant = (1 << sc->sc_scan_last_antenna) << IWM_RATE_MCS_ANT_POS;
207 if ((flags & IEEE80211_CHAN_2GHZ) && !no_cck)
208 return htole32(IWM_RATE_1M_PLCP | IWM_RATE_MCS_CCK_MSK |
211 return htole32(IWM_RATE_6M_PLCP | tx_ant);
214 static inline boolean_t
215 iwm_mvm_rrm_scan_needed(struct iwm_softc *sc)
217 /* require rrm scan whenever the fw supports it */
218 return fw_has_capa(&sc->ucode_capa,
219 IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
224 iwm_mvm_ebs_status_str(enum iwm_scan_ebs_status status)
227 case IWM_SCAN_EBS_SUCCESS:
229 case IWM_SCAN_EBS_INACTIVE:
231 case IWM_SCAN_EBS_FAILED:
232 case IWM_SCAN_EBS_CHAN_NOT_FOUND:
239 iwm_mvm_offload_status_str(enum iwm_scan_offload_complete_status status)
241 return (status == IWM_SCAN_OFFLOAD_ABORTED) ? "aborted" : "completed";
246 iwm_mvm_rx_lmac_scan_complete_notif(struct iwm_softc *sc,
247 struct iwm_rx_packet *pkt)
249 struct iwm_periodic_scan_complete *scan_notif = (void *)pkt->data;
251 /* If this happens, the firmware has mistakenly sent an LMAC
252 * notification during UMAC scans -- warn and ignore it.
254 if (fw_has_capa(&sc->ucode_capa, IWM_UCODE_TLV_CAPA_UMAC_SCAN)) {
255 device_printf(sc->sc_dev,
256 "%s: Mistakenly got LMAC notification during UMAC scan\n",
261 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Regular scan %s, EBS status %s (FW)\n",
262 iwm_mvm_offload_status_str(scan_notif->status),
263 iwm_mvm_ebs_status_str(scan_notif->ebs_status));
265 sc->last_ebs_successful =
266 scan_notif->ebs_status == IWM_SCAN_EBS_SUCCESS ||
267 scan_notif->ebs_status == IWM_SCAN_EBS_INACTIVE;
272 iwm_mvm_rx_umac_scan_complete_notif(struct iwm_softc *sc,
273 struct iwm_rx_packet *pkt)
275 struct iwm_umac_scan_complete *notif = (void *)pkt->data;
277 IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
278 "Scan completed, uid %u, status %s, EBS status %s\n",
280 iwm_mvm_offload_status_str(notif->status),
281 iwm_mvm_ebs_status_str(notif->ebs_status));
283 if (notif->ebs_status != IWM_SCAN_EBS_SUCCESS &&
284 notif->ebs_status != IWM_SCAN_EBS_INACTIVE)
285 sc->last_ebs_successful = FALSE;
289 iwm_mvm_scan_skip_channel(struct ieee80211_channel *c)
291 if (IEEE80211_IS_CHAN_2GHZ(c) && IEEE80211_IS_CHAN_B(c))
293 else if (IEEE80211_IS_CHAN_5GHZ(c) && IEEE80211_IS_CHAN_A(c))
300 iwm_mvm_lmac_scan_fill_channels(struct iwm_softc *sc,
301 struct iwm_scan_channel_cfg_lmac *chan, int n_ssids)
303 struct ieee80211com *ic = &sc->sc_ic;
304 struct ieee80211_scan_state *ss = ic->ic_scan;
305 struct ieee80211_channel *c;
310 j < ss->ss_last && nchan < sc->ucode_capa.n_scan_channels; j++) {
313 * Catch other channels, in case we have 900MHz channels or
314 * something in the chanlist.
316 if (!IEEE80211_IS_CHAN_2GHZ(c) && !IEEE80211_IS_CHAN_5GHZ(c)) {
317 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM,
318 "%s: skipping channel (freq=%d, ieee=%d, flags=0x%08x)\n",
319 __func__, c->ic_freq, c->ic_ieee, c->ic_flags);
323 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM,
324 "Adding channel %d (%d Mhz) to the list\n",
326 chan->channel_num = htole16(ieee80211_mhz2ieee(c->ic_freq, 0));
327 chan->iter_count = htole16(1);
328 chan->iter_interval = htole32(0);
329 chan->flags = htole32(IWM_UNIFIED_SCAN_CHANNEL_PARTIAL);
330 chan->flags |= htole32(IWM_SCAN_CHANNEL_NSSIDS(n_ssids));
331 /* XXX IEEE80211_SCAN_NOBCAST flag is never set. */
332 if (!IEEE80211_IS_CHAN_PASSIVE(c) &&
333 (!(ss->ss_flags & IEEE80211_SCAN_NOBCAST) || n_ssids != 0))
334 chan->flags |= htole32(IWM_SCAN_CHANNEL_TYPE_ACTIVE);
343 iwm_mvm_umac_scan_fill_channels(struct iwm_softc *sc,
344 struct iwm_scan_channel_cfg_umac *chan, int n_ssids)
346 struct ieee80211com *ic = &sc->sc_ic;
347 struct ieee80211_scan_state *ss = ic->ic_scan;
348 struct ieee80211_channel *c;
353 j < ss->ss_last && nchan < sc->ucode_capa.n_scan_channels; j++) {
356 * Catch other channels, in case we have 900MHz channels or
357 * something in the chanlist.
359 if (!IEEE80211_IS_CHAN_2GHZ(c) && !IEEE80211_IS_CHAN_5GHZ(c)) {
360 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM,
361 "%s: skipping channel (freq=%d, ieee=%d, flags=0x%08x)\n",
362 __func__, c->ic_freq, c->ic_ieee, c->ic_flags);
366 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM,
367 "Adding channel %d (%d Mhz) to the list\n",
369 chan->channel_num = ieee80211_mhz2ieee(c->ic_freq, 0);
370 chan->iter_count = 1;
371 chan->iter_interval = htole16(0);
372 chan->flags = htole32(IWM_SCAN_CHANNEL_UMAC_NSSIDS(n_ssids));
381 iwm_mvm_fill_probe_req(struct iwm_softc *sc, struct iwm_scan_probe_req *preq)
383 struct ieee80211com *ic = &sc->sc_ic;
384 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
385 struct ieee80211_frame *wh = (struct ieee80211_frame *)preq->buf;
386 struct ieee80211_rateset *rs;
387 size_t remain = sizeof(preq->buf);
390 memset(preq, 0, sizeof(*preq));
392 /* Ensure enough space for header and SSID IE. */
393 if (remain < sizeof(*wh) + 2)
397 * Build a probe request frame. Most of the following code is a
398 * copy & paste of what is done in net80211.
400 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
401 IEEE80211_FC0_SUBTYPE_PROBE_REQ;
402 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
403 IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr);
404 IEEE80211_ADDR_COPY(wh->i_addr2, vap ? vap->iv_myaddr : ic->ic_macaddr);
405 IEEE80211_ADDR_COPY(wh->i_addr3, ieee80211broadcastaddr);
406 *(uint16_t *)&wh->i_dur[0] = 0; /* filled by HW */
407 *(uint16_t *)&wh->i_seq[0] = 0; /* filled by HW */
409 frm = (uint8_t *)(wh + 1);
410 frm = ieee80211_add_ssid(frm, NULL, 0);
412 /* Tell the firmware where the MAC header is. */
413 preq->mac_header.offset = 0;
414 preq->mac_header.len = htole16(frm - (uint8_t *)wh);
415 remain -= frm - (uint8_t *)wh;
417 /* Fill in 2GHz IEs and tell firmware where they are. */
418 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G];
419 if (rs->rs_nrates > IEEE80211_RATE_SIZE) {
420 if (remain < 4 + rs->rs_nrates)
422 } else if (remain < 2 + rs->rs_nrates) {
425 preq->band_data[0].offset = htole16(frm - (uint8_t *)wh);
427 frm = ieee80211_add_rates(frm, rs);
428 if (rs->rs_nrates > IEEE80211_RATE_SIZE)
429 frm = ieee80211_add_xrates(frm, rs);
430 preq->band_data[0].len = htole16(frm - pos);
433 if (iwm_mvm_rrm_scan_needed(sc)) {
436 *frm++ = IEEE80211_ELEMID_DSPARMS;
442 if (sc->nvm_data->sku_cap_band_52GHz_enable) {
443 /* Fill in 5GHz IEs. */
444 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A];
445 if (rs->rs_nrates > IEEE80211_RATE_SIZE) {
446 if (remain < 4 + rs->rs_nrates)
448 } else if (remain < 2 + rs->rs_nrates) {
451 preq->band_data[1].offset = htole16(frm - (uint8_t *)wh);
453 frm = ieee80211_add_rates(frm, rs);
454 if (rs->rs_nrates > IEEE80211_RATE_SIZE)
455 frm = ieee80211_add_xrates(frm, rs);
456 preq->band_data[1].len = htole16(frm - pos);
460 /* Send 11n IEs on both 2GHz and 5GHz bands. */
461 preq->common_data.offset = htole16(frm - (uint8_t *)wh);
464 if (ic->ic_flags & IEEE80211_F_HTON) {
467 frm = ieee80211_add_htcaps(frm, ic);
468 /* XXX add WME info? */
471 preq->common_data.len = htole16(frm - pos);
477 iwm_mvm_config_umac_scan(struct iwm_softc *sc)
479 struct ieee80211com *ic = &sc->sc_ic;
480 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
482 struct iwm_scan_config *scan_config;
485 struct ieee80211_channel *c;
486 struct iwm_host_cmd hcmd = {
487 .id = iwm_cmd_id(IWM_SCAN_CFG_CMD, IWM_ALWAYS_LONG_GROUP, 0),
488 .flags = IWM_CMD_SYNC,
490 static const uint32_t rates = (IWM_SCAN_CONFIG_RATE_1M |
491 IWM_SCAN_CONFIG_RATE_2M | IWM_SCAN_CONFIG_RATE_5M |
492 IWM_SCAN_CONFIG_RATE_11M | IWM_SCAN_CONFIG_RATE_6M |
493 IWM_SCAN_CONFIG_RATE_9M | IWM_SCAN_CONFIG_RATE_12M |
494 IWM_SCAN_CONFIG_RATE_18M | IWM_SCAN_CONFIG_RATE_24M |
495 IWM_SCAN_CONFIG_RATE_36M | IWM_SCAN_CONFIG_RATE_48M |
496 IWM_SCAN_CONFIG_RATE_54M);
498 cmd_size = sizeof(*scan_config) + sc->ucode_capa.n_scan_channels;
500 scan_config = malloc(cmd_size, M_DEVBUF, M_NOWAIT | M_ZERO);
501 if (scan_config == NULL)
504 scan_config->tx_chains = htole32(iwm_mvm_get_valid_tx_ant(sc));
505 scan_config->rx_chains = htole32(iwm_mvm_get_valid_rx_ant(sc));
506 scan_config->legacy_rates = htole32(rates |
507 IWM_SCAN_CONFIG_SUPPORTED_RATE(rates));
509 /* These timings correspond to iwlwifi's UNASSOC scan. */
510 scan_config->dwell_active = 10;
511 scan_config->dwell_passive = 110;
512 scan_config->dwell_fragmented = 44;
513 scan_config->dwell_extended = 90;
514 scan_config->out_of_channel_time = htole32(0);
515 scan_config->suspend_time = htole32(0);
517 IEEE80211_ADDR_COPY(scan_config->mac_addr,
518 vap ? vap->iv_myaddr : ic->ic_macaddr);
520 scan_config->bcast_sta_id = sc->sc_aux_sta.sta_id;
521 scan_config->channel_flags = IWM_CHANNEL_FLAG_EBS |
522 IWM_CHANNEL_FLAG_ACCURATE_EBS | IWM_CHANNEL_FLAG_EBS_ADD |
523 IWM_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
526 j < ic->ic_nchans && nchan < sc->ucode_capa.n_scan_channels; j++) {
527 c = &ic->ic_channels[j];
528 /* For 2GHz, only populate 11b channels */
529 /* For 5GHz, only populate 11a channels */
531 * Catch other channels, in case we have 900MHz channels or
532 * something in the chanlist.
534 if (iwm_mvm_scan_skip_channel(c))
536 scan_config->channel_array[nchan++] =
537 ieee80211_mhz2ieee(c->ic_freq, 0);
540 scan_config->flags = htole32(IWM_SCAN_CONFIG_FLAG_ACTIVATE |
541 IWM_SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
542 IWM_SCAN_CONFIG_FLAG_SET_TX_CHAINS |
543 IWM_SCAN_CONFIG_FLAG_SET_RX_CHAINS |
544 IWM_SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
545 IWM_SCAN_CONFIG_FLAG_SET_ALL_TIMES |
546 IWM_SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
547 IWM_SCAN_CONFIG_FLAG_SET_MAC_ADDR |
548 IWM_SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS|
549 IWM_SCAN_CONFIG_N_CHANNELS(nchan) |
550 IWM_SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
552 hcmd.data[0] = scan_config;
553 hcmd.len[0] = cmd_size;
555 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Sending UMAC scan config\n");
557 ret = iwm_send_cmd(sc, &hcmd);
559 IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
560 "UMAC scan config was sent successfully\n");
562 free(scan_config, M_DEVBUF);
567 iwm_mvm_scan_use_ebs(struct iwm_softc *sc)
569 const struct iwm_ucode_capabilities *capa = &sc->ucode_capa;
571 /* We can only use EBS if:
572 * 1. the feature is supported;
573 * 2. the last EBS was successful;
574 * 3. if only single scan, the single scan EBS API is supported;
575 * 4. it's not a p2p find operation.
577 return ((capa->flags & IWM_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
578 sc->last_ebs_successful);
582 iwm_mvm_umac_scan(struct iwm_softc *sc)
584 struct iwm_host_cmd hcmd = {
585 .id = iwm_cmd_id(IWM_SCAN_REQ_UMAC, IWM_ALWAYS_LONG_GROUP, 0),
588 .flags = IWM_CMD_SYNC,
590 struct ieee80211_scan_state *ss = sc->sc_ic.ic_scan;
591 struct iwm_scan_req_umac *req;
592 struct iwm_scan_req_umac_tail *tail;
597 req_len = sizeof(struct iwm_scan_req_umac) +
598 (sizeof(struct iwm_scan_channel_cfg_umac) *
599 sc->ucode_capa.n_scan_channels) +
600 sizeof(struct iwm_scan_req_umac_tail);
601 if (req_len > IWM_MAX_CMD_PAYLOAD_SIZE)
603 req = malloc(req_len, M_DEVBUF, M_NOWAIT | M_ZERO);
607 hcmd.len[0] = (uint16_t)req_len;
608 hcmd.data[0] = (void *)req;
610 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Handling ieee80211 scan request\n");
612 /* These timings correspond to iwlwifi's UNASSOC scan. */
613 req->active_dwell = 10;
614 req->passive_dwell = 110;
615 req->fragmented_dwell = 44;
616 req->extended_dwell = 90;
617 req->max_out_time = 0;
618 req->suspend_time = 0;
620 req->scan_priority = htole32(IWM_SCAN_PRIORITY_HIGH);
621 req->ooc_priority = htole32(IWM_SCAN_PRIORITY_HIGH);
623 nssid = MIN(ss->ss_nssid, IWM_PROBE_OPTION_MAX);
624 req->n_channels = iwm_mvm_umac_scan_fill_channels(sc,
625 (struct iwm_scan_channel_cfg_umac *)req->data, nssid);
627 req->general_flags = htole32(IWM_UMAC_SCAN_GEN_FLAGS_PASS_ALL |
628 IWM_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE |
629 IWM_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL);
631 tail = (void *)((char *)&req->data +
632 sizeof(struct iwm_scan_channel_cfg_umac) *
633 sc->ucode_capa.n_scan_channels);
635 /* Check if we're doing an active directed scan. */
636 for (i = 0; i < nssid; i++) {
637 tail->direct_scan[i].id = IEEE80211_ELEMID_SSID;
638 tail->direct_scan[i].len = MIN(ss->ss_ssid[i].len,
640 memcpy(tail->direct_scan[i].ssid, ss->ss_ssid[i].ssid,
641 tail->direct_scan[i].len);
645 req->general_flags |=
646 htole32(IWM_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT);
648 req->general_flags |= htole32(IWM_UMAC_SCAN_GEN_FLAGS_PASSIVE);
650 if (iwm_mvm_scan_use_ebs(sc))
651 req->channel_flags = IWM_SCAN_CHANNEL_FLAG_EBS |
652 IWM_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
653 IWM_SCAN_CHANNEL_FLAG_CACHE_ADD;
655 if (iwm_mvm_rrm_scan_needed(sc))
656 req->general_flags |=
657 htole32(IWM_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED);
659 ret = iwm_mvm_fill_probe_req(sc, &tail->preq);
665 /* Specify the scan plan: We'll do one iteration. */
666 tail->schedule[0].interval = 0;
667 tail->schedule[0].iter_count = 1;
669 ret = iwm_send_cmd(sc, &hcmd);
671 IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
672 "Scan request was sent successfully\n");
678 iwm_mvm_lmac_scan(struct iwm_softc *sc)
680 struct iwm_host_cmd hcmd = {
681 .id = IWM_SCAN_OFFLOAD_REQUEST_CMD,
684 .flags = IWM_CMD_SYNC,
686 struct ieee80211_scan_state *ss = sc->sc_ic.ic_scan;
687 struct iwm_scan_req_lmac *req;
692 IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
693 "Handling ieee80211 scan request\n");
695 req_len = sizeof(struct iwm_scan_req_lmac) +
696 (sizeof(struct iwm_scan_channel_cfg_lmac) *
697 sc->ucode_capa.n_scan_channels) + sizeof(struct iwm_scan_probe_req);
698 if (req_len > IWM_MAX_CMD_PAYLOAD_SIZE)
700 req = malloc(req_len, M_DEVBUF, M_NOWAIT | M_ZERO);
704 hcmd.len[0] = (uint16_t)req_len;
705 hcmd.data[0] = (void *)req;
707 /* These timings correspond to iwlwifi's UNASSOC scan. */
708 req->active_dwell = 10;
709 req->passive_dwell = 110;
710 req->fragmented_dwell = 44;
711 req->extended_dwell = 90;
712 req->max_out_time = 0;
713 req->suspend_time = 0;
715 req->scan_prio = htole32(IWM_SCAN_PRIORITY_HIGH);
716 req->rx_chain_select = iwm_mvm_scan_rx_chain(sc);
717 req->iter_num = htole32(1);
720 req->scan_flags = htole32(IWM_MVM_LMAC_SCAN_FLAG_PASS_ALL |
721 IWM_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE |
722 IWM_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL);
723 if (iwm_mvm_rrm_scan_needed(sc))
724 req->scan_flags |= htole32(IWM_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED);
726 req->flags = iwm_mvm_scan_rxon_flags(sc->sc_ic.ic_scan->ss_chans[0]);
729 htole32(IWM_MAC_FILTER_ACCEPT_GRP | IWM_MAC_FILTER_IN_BEACON);
731 /* Tx flags 2 GHz. */
732 req->tx_cmd[0].tx_flags = htole32(IWM_TX_CMD_FLG_SEQ_CTL |
733 IWM_TX_CMD_FLG_BT_DIS);
734 req->tx_cmd[0].rate_n_flags =
735 iwm_mvm_scan_rate_n_flags(sc, IEEE80211_CHAN_2GHZ, 1/*XXX*/);
736 req->tx_cmd[0].sta_id = sc->sc_aux_sta.sta_id;
738 /* Tx flags 5 GHz. */
739 req->tx_cmd[1].tx_flags = htole32(IWM_TX_CMD_FLG_SEQ_CTL |
740 IWM_TX_CMD_FLG_BT_DIS);
741 req->tx_cmd[1].rate_n_flags =
742 iwm_mvm_scan_rate_n_flags(sc, IEEE80211_CHAN_5GHZ, 1/*XXX*/);
743 req->tx_cmd[1].sta_id = sc->sc_aux_sta.sta_id;
745 /* Check if we're doing an active directed scan. */
746 nssid = MIN(ss->ss_nssid, IWM_PROBE_OPTION_MAX);
747 for (i = 0; i < nssid; i++) {
748 req->direct_scan[i].id = IEEE80211_ELEMID_SSID;
749 req->direct_scan[i].len = MIN(ss->ss_ssid[i].len,
751 memcpy(req->direct_scan[i].ssid, ss->ss_ssid[i].ssid,
752 req->direct_scan[i].len);
757 htole32(IWM_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION);
759 req->scan_flags |= htole32(IWM_MVM_LMAC_SCAN_FLAG_PASSIVE);
761 req->n_channels = iwm_mvm_lmac_scan_fill_channels(sc,
762 (struct iwm_scan_channel_cfg_lmac *)req->data, nssid);
764 ret = iwm_mvm_fill_probe_req(sc,
765 (struct iwm_scan_probe_req *)(req->data +
766 (sizeof(struct iwm_scan_channel_cfg_lmac) *
767 sc->ucode_capa.n_scan_channels)));
773 /* Specify the scan plan: We'll do one iteration. */
774 req->schedule[0].iterations = 1;
775 req->schedule[0].full_scan_mul = 1;
777 if (iwm_mvm_scan_use_ebs(sc)) {
778 req->channel_opt[0].flags =
779 htole16(IWM_SCAN_CHANNEL_FLAG_EBS |
780 IWM_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
781 IWM_SCAN_CHANNEL_FLAG_CACHE_ADD);
782 req->channel_opt[0].non_ebs_ratio =
783 htole16(IWM_DENSE_EBS_SCAN_RATIO);
784 req->channel_opt[1].flags =
785 htole16(IWM_SCAN_CHANNEL_FLAG_EBS |
786 IWM_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
787 IWM_SCAN_CHANNEL_FLAG_CACHE_ADD);
788 req->channel_opt[1].non_ebs_ratio =
789 htole16(IWM_SPARSE_EBS_SCAN_RATIO);
792 ret = iwm_send_cmd(sc, &hcmd);
794 IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
795 "Scan request was sent successfully\n");
802 iwm_mvm_lmac_scan_abort(struct iwm_softc *sc)
805 struct iwm_host_cmd hcmd = {
806 .id = IWM_SCAN_OFFLOAD_ABORT_CMD,
809 .flags = IWM_CMD_SYNC,
813 ret = iwm_mvm_send_cmd_status(sc, &hcmd, &status);
817 if (status != IWM_CAN_ABORT_STATUS) {
819 * The scan abort will return 1 for success or
820 * 2 for "failure". A failure condition can be
821 * due to simply not being in an active scan which
822 * can occur if we send the scan abort before the
823 * microcode has notified us that a scan is completed.
825 IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
826 "SCAN OFFLOAD ABORT ret %d.\n", status);
834 iwm_mvm_umac_scan_abort(struct iwm_softc *sc)
836 struct iwm_umac_scan_abort cmd = {};
840 cmd.uid = htole32(uid);
842 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Sending scan abort, uid %u\n", uid);
844 ret = iwm_mvm_send_cmd_pdu(sc,
845 iwm_cmd_id(IWM_SCAN_ABORT_UMAC,
846 IWM_ALWAYS_LONG_GROUP, 0),
847 0, sizeof(cmd), &cmd);
853 iwm_mvm_scan_stop_wait(struct iwm_softc *sc)
855 struct iwm_notification_wait wait_scan_done;
856 static const uint16_t scan_done_notif[] = { IWM_SCAN_COMPLETE_UMAC,
857 IWM_SCAN_OFFLOAD_COMPLETE, };
860 iwm_init_notification_wait(sc->sc_notif_wait, &wait_scan_done,
861 scan_done_notif, nitems(scan_done_notif),
864 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Preparing to stop scan\n");
866 if (fw_has_capa(&sc->ucode_capa, IWM_UCODE_TLV_CAPA_UMAC_SCAN))
867 ret = iwm_mvm_umac_scan_abort(sc);
869 ret = iwm_mvm_lmac_scan_abort(sc);
872 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "couldn't stop scan\n");
873 iwm_remove_notification(sc->sc_notif_wait, &wait_scan_done);
878 ret = iwm_wait_notification(sc->sc_notif_wait, &wait_scan_done, hz);