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Merge commit '371a00448f95adaa612cf1a0b31a11e7093bc706' of 'git://git.kernel.org...
[mirror_ubuntu-eoan-kernel.git] / drivers / net / wireless / brcm80211 / brcmsmac / mac80211_if.c
1 /*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #define __UNDEF_NO_VERSION__
18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19
20 #include <linux/etherdevice.h>
21 #include <linux/sched.h>
22 #include <linux/firmware.h>
23 #include <linux/interrupt.h>
24 #include <linux/module.h>
25 #include <linux/bcma/bcma.h>
26 #include <net/mac80211.h>
27 #include <defs.h>
28 #include "phy/phy_int.h"
29 #include "d11.h"
30 #include "channel.h"
31 #include "scb.h"
32 #include "pub.h"
33 #include "ucode_loader.h"
34 #include "mac80211_if.h"
35 #include "main.h"
36
37 #define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */
38
39 /* Flags we support */
40 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
41 FIF_ALLMULTI | \
42 FIF_FCSFAIL | \
43 FIF_CONTROL | \
44 FIF_OTHER_BSS | \
45 FIF_BCN_PRBRESP_PROMISC | \
46 FIF_PSPOLL)
47
48 #define CHAN2GHZ(channel, freqency, chflags) { \
49 .band = IEEE80211_BAND_2GHZ, \
50 .center_freq = (freqency), \
51 .hw_value = (channel), \
52 .flags = chflags, \
53 .max_antenna_gain = 0, \
54 .max_power = 19, \
55 }
56
57 #define CHAN5GHZ(channel, chflags) { \
58 .band = IEEE80211_BAND_5GHZ, \
59 .center_freq = 5000 + 5*(channel), \
60 .hw_value = (channel), \
61 .flags = chflags, \
62 .max_antenna_gain = 0, \
63 .max_power = 21, \
64 }
65
66 #define RATE(rate100m, _flags) { \
67 .bitrate = (rate100m), \
68 .flags = (_flags), \
69 .hw_value = (rate100m / 5), \
70 }
71
72 struct firmware_hdr {
73 __le32 offset;
74 __le32 len;
75 __le32 idx;
76 };
77
78 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
79 "brcm/bcm43xx",
80 NULL
81 };
82
83 static int n_adapters_found;
84
85 MODULE_AUTHOR("Broadcom Corporation");
86 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
87 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
88 MODULE_LICENSE("Dual BSD/GPL");
89 /* This needs to be adjusted when brcms_firmwares changes */
90 MODULE_FIRMWARE("brcm/bcm43xx-0.fw");
91 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw");
92
93 /* recognized BCMA Core IDs */
94 static struct bcma_device_id brcms_coreid_table[] = {
95 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
96 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
97 BCMA_CORETABLE_END
98 };
99 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
100
101 #ifdef DEBUG
102 static int msglevel = 0xdeadbeef;
103 module_param(msglevel, int, 0);
104 #endif /* DEBUG */
105
106 static struct ieee80211_channel brcms_2ghz_chantable[] = {
107 CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
108 CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
109 CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
110 CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
111 CHAN2GHZ(5, 2432, 0),
112 CHAN2GHZ(6, 2437, 0),
113 CHAN2GHZ(7, 2442, 0),
114 CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
115 CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
116 CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
117 CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
118 CHAN2GHZ(12, 2467,
119 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
120 IEEE80211_CHAN_NO_HT40PLUS),
121 CHAN2GHZ(13, 2472,
122 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
123 IEEE80211_CHAN_NO_HT40PLUS),
124 CHAN2GHZ(14, 2484,
125 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
126 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
127 IEEE80211_CHAN_NO_OFDM)
128 };
129
130 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
131 /* UNII-1 */
132 CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
133 CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
134 CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
135 CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
136 /* UNII-2 */
137 CHAN5GHZ(52,
138 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
139 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
140 CHAN5GHZ(56,
141 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
142 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
143 CHAN5GHZ(60,
144 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
145 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
146 CHAN5GHZ(64,
147 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
148 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
149 /* MID */
150 CHAN5GHZ(100,
151 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
152 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
153 CHAN5GHZ(104,
154 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
155 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
156 CHAN5GHZ(108,
157 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
158 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
159 CHAN5GHZ(112,
160 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
161 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
162 CHAN5GHZ(116,
163 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
164 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
165 CHAN5GHZ(120,
166 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
167 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
168 CHAN5GHZ(124,
169 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
170 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
171 CHAN5GHZ(128,
172 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
173 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
174 CHAN5GHZ(132,
175 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
176 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
177 CHAN5GHZ(136,
178 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
179 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
180 CHAN5GHZ(140,
181 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
182 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
183 IEEE80211_CHAN_NO_HT40MINUS),
184 /* UNII-3 */
185 CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
186 CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
187 CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
188 CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
189 CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
190 };
191
192 /*
193 * The rate table is used for both 2.4G and 5G rates. The
194 * latter being a subset as it does not support CCK rates.
195 */
196 static struct ieee80211_rate legacy_ratetable[] = {
197 RATE(10, 0),
198 RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
199 RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
200 RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
201 RATE(60, 0),
202 RATE(90, 0),
203 RATE(120, 0),
204 RATE(180, 0),
205 RATE(240, 0),
206 RATE(360, 0),
207 RATE(480, 0),
208 RATE(540, 0),
209 };
210
211 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
212 .band = IEEE80211_BAND_2GHZ,
213 .channels = brcms_2ghz_chantable,
214 .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
215 .bitrates = legacy_ratetable,
216 .n_bitrates = ARRAY_SIZE(legacy_ratetable),
217 .ht_cap = {
218 /* from include/linux/ieee80211.h */
219 .cap = IEEE80211_HT_CAP_GRN_FLD |
220 IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
221 .ht_supported = true,
222 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
223 .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
224 .mcs = {
225 /* placeholders for now */
226 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
227 .rx_highest = cpu_to_le16(500),
228 .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
229 }
230 };
231
232 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
233 .band = IEEE80211_BAND_5GHZ,
234 .channels = brcms_5ghz_nphy_chantable,
235 .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
236 .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
237 .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
238 BRCMS_LEGACY_5G_RATE_OFFSET,
239 .ht_cap = {
240 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
241 IEEE80211_HT_CAP_SGI_40,
242 .ht_supported = true,
243 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
244 .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
245 .mcs = {
246 /* placeholders for now */
247 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
248 .rx_highest = cpu_to_le16(500),
249 .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
250 }
251 };
252
253 /* flags the given rate in rateset as requested */
254 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
255 {
256 u32 i;
257
258 for (i = 0; i < rs->count; i++) {
259 if (rate != (rs->rates[i] & 0x7f))
260 continue;
261
262 if (is_br)
263 rs->rates[i] |= BRCMS_RATE_FLAG;
264 else
265 rs->rates[i] &= BRCMS_RATE_MASK;
266 return;
267 }
268 }
269
270 static void brcms_ops_tx(struct ieee80211_hw *hw,
271 struct ieee80211_tx_control *control,
272 struct sk_buff *skb)
273 {
274 struct brcms_info *wl = hw->priv;
275 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
276
277 spin_lock_bh(&wl->lock);
278 if (!wl->pub->up) {
279 wiphy_err(wl->wiphy, "ops->tx called while down\n");
280 kfree_skb(skb);
281 goto done;
282 }
283 brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
284 tx_info->rate_driver_data[0] = control->sta;
285 done:
286 spin_unlock_bh(&wl->lock);
287 }
288
289 static int brcms_ops_start(struct ieee80211_hw *hw)
290 {
291 struct brcms_info *wl = hw->priv;
292 bool blocked;
293 int err;
294
295 ieee80211_wake_queues(hw);
296 spin_lock_bh(&wl->lock);
297 blocked = brcms_rfkill_set_hw_state(wl);
298 spin_unlock_bh(&wl->lock);
299 if (!blocked)
300 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
301
302 spin_lock_bh(&wl->lock);
303 /* avoid acknowledging frames before a non-monitor device is added */
304 wl->mute_tx = true;
305
306 if (!wl->pub->up)
307 err = brcms_up(wl);
308 else
309 err = -ENODEV;
310 spin_unlock_bh(&wl->lock);
311
312 if (err != 0)
313 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
314 err);
315 return err;
316 }
317
318 static void brcms_ops_stop(struct ieee80211_hw *hw)
319 {
320 struct brcms_info *wl = hw->priv;
321 int status;
322
323 ieee80211_stop_queues(hw);
324
325 if (wl->wlc == NULL)
326 return;
327
328 spin_lock_bh(&wl->lock);
329 status = brcms_c_chipmatch(wl->wlc->hw->d11core);
330 spin_unlock_bh(&wl->lock);
331 if (!status) {
332 wiphy_err(wl->wiphy,
333 "wl: brcms_ops_stop: chipmatch failed\n");
334 return;
335 }
336
337 /* put driver in down state */
338 spin_lock_bh(&wl->lock);
339 brcms_down(wl);
340 spin_unlock_bh(&wl->lock);
341 }
342
343 static int
344 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
345 {
346 struct brcms_info *wl = hw->priv;
347
348 /* Just STA for now */
349 if (vif->type != NL80211_IFTYPE_STATION) {
350 wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
351 " STA for now\n", __func__, vif->type);
352 return -EOPNOTSUPP;
353 }
354
355 wl->mute_tx = false;
356 brcms_c_mute(wl->wlc, false);
357
358 return 0;
359 }
360
361 static void
362 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
363 {
364 }
365
366 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
367 {
368 struct ieee80211_conf *conf = &hw->conf;
369 struct brcms_info *wl = hw->priv;
370 int err = 0;
371 int new_int;
372 struct wiphy *wiphy = hw->wiphy;
373
374 spin_lock_bh(&wl->lock);
375 if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
376 brcms_c_set_beacon_listen_interval(wl->wlc,
377 conf->listen_interval);
378 }
379 if (changed & IEEE80211_CONF_CHANGE_MONITOR)
380 wiphy_dbg(wiphy, "%s: change monitor mode: %s\n",
381 __func__, conf->flags & IEEE80211_CONF_MONITOR ?
382 "true" : "false");
383 if (changed & IEEE80211_CONF_CHANGE_PS)
384 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
385 __func__, conf->flags & IEEE80211_CONF_PS ?
386 "true" : "false");
387
388 if (changed & IEEE80211_CONF_CHANGE_POWER) {
389 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
390 if (err < 0) {
391 wiphy_err(wiphy, "%s: Error setting power_level\n",
392 __func__);
393 goto config_out;
394 }
395 new_int = brcms_c_get_tx_power(wl->wlc);
396 if (new_int != conf->power_level)
397 wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
398 "\n", __func__, conf->power_level,
399 new_int);
400 }
401 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
402 if (conf->channel_type == NL80211_CHAN_HT20 ||
403 conf->channel_type == NL80211_CHAN_NO_HT)
404 err = brcms_c_set_channel(wl->wlc,
405 conf->channel->hw_value);
406 else
407 err = -ENOTSUPP;
408 }
409 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
410 err = brcms_c_set_rate_limit(wl->wlc,
411 conf->short_frame_max_tx_count,
412 conf->long_frame_max_tx_count);
413
414 config_out:
415 spin_unlock_bh(&wl->lock);
416 return err;
417 }
418
419 static void
420 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
421 struct ieee80211_vif *vif,
422 struct ieee80211_bss_conf *info, u32 changed)
423 {
424 struct brcms_info *wl = hw->priv;
425 struct wiphy *wiphy = hw->wiphy;
426
427 if (changed & BSS_CHANGED_ASSOC) {
428 /* association status changed (associated/disassociated)
429 * also implies a change in the AID.
430 */
431 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
432 __func__, info->assoc ? "" : "dis");
433 spin_lock_bh(&wl->lock);
434 brcms_c_associate_upd(wl->wlc, info->assoc);
435 spin_unlock_bh(&wl->lock);
436 }
437 if (changed & BSS_CHANGED_ERP_SLOT) {
438 s8 val;
439
440 /* slot timing changed */
441 if (info->use_short_slot)
442 val = 1;
443 else
444 val = 0;
445 spin_lock_bh(&wl->lock);
446 brcms_c_set_shortslot_override(wl->wlc, val);
447 spin_unlock_bh(&wl->lock);
448 }
449
450 if (changed & BSS_CHANGED_HT) {
451 /* 802.11n parameters changed */
452 u16 mode = info->ht_operation_mode;
453
454 spin_lock_bh(&wl->lock);
455 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
456 mode & IEEE80211_HT_OP_MODE_PROTECTION);
457 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
458 mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
459 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
460 mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
461 spin_unlock_bh(&wl->lock);
462 }
463 if (changed & BSS_CHANGED_BASIC_RATES) {
464 struct ieee80211_supported_band *bi;
465 u32 br_mask, i;
466 u16 rate;
467 struct brcm_rateset rs;
468 int error;
469
470 /* retrieve the current rates */
471 spin_lock_bh(&wl->lock);
472 brcms_c_get_current_rateset(wl->wlc, &rs);
473 spin_unlock_bh(&wl->lock);
474
475 br_mask = info->basic_rates;
476 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
477 for (i = 0; i < bi->n_bitrates; i++) {
478 /* convert to internal rate value */
479 rate = (bi->bitrates[i].bitrate << 1) / 10;
480
481 /* set/clear basic rate flag */
482 brcms_set_basic_rate(&rs, rate, br_mask & 1);
483 br_mask >>= 1;
484 }
485
486 /* update the rate set */
487 spin_lock_bh(&wl->lock);
488 error = brcms_c_set_rateset(wl->wlc, &rs);
489 spin_unlock_bh(&wl->lock);
490 if (error)
491 wiphy_err(wiphy, "changing basic rates failed: %d\n",
492 error);
493 }
494 if (changed & BSS_CHANGED_BEACON_INT) {
495 /* Beacon interval changed */
496 spin_lock_bh(&wl->lock);
497 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
498 spin_unlock_bh(&wl->lock);
499 }
500 if (changed & BSS_CHANGED_BSSID) {
501 /* BSSID changed, for whatever reason (IBSS and managed mode) */
502 spin_lock_bh(&wl->lock);
503 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
504 spin_unlock_bh(&wl->lock);
505 }
506 if (changed & BSS_CHANGED_BEACON)
507 /* Beacon data changed, retrieve new beacon (beaconing modes) */
508 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
509
510 if (changed & BSS_CHANGED_BEACON_ENABLED) {
511 /* Beaconing should be enabled/disabled (beaconing modes) */
512 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
513 info->enable_beacon ? "true" : "false");
514 }
515
516 if (changed & BSS_CHANGED_CQM) {
517 /* Connection quality monitor config changed */
518 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
519 " (implement)\n", __func__, info->cqm_rssi_thold,
520 info->cqm_rssi_hyst);
521 }
522
523 if (changed & BSS_CHANGED_IBSS) {
524 /* IBSS join status changed */
525 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
526 info->ibss_joined ? "true" : "false");
527 }
528
529 if (changed & BSS_CHANGED_ARP_FILTER) {
530 /* Hardware ARP filter address list or state changed */
531 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
532 " (implement)\n", __func__, info->arp_filter_enabled ?
533 "true" : "false", info->arp_addr_cnt);
534 }
535
536 if (changed & BSS_CHANGED_QOS) {
537 /*
538 * QoS for this association was enabled/disabled.
539 * Note that it is only ever disabled for station mode.
540 */
541 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
542 info->qos ? "true" : "false");
543 }
544 return;
545 }
546
547 static void
548 brcms_ops_configure_filter(struct ieee80211_hw *hw,
549 unsigned int changed_flags,
550 unsigned int *total_flags, u64 multicast)
551 {
552 struct brcms_info *wl = hw->priv;
553 struct wiphy *wiphy = hw->wiphy;
554
555 changed_flags &= MAC_FILTERS;
556 *total_flags &= MAC_FILTERS;
557
558 if (changed_flags & FIF_PROMISC_IN_BSS)
559 wiphy_dbg(wiphy, "FIF_PROMISC_IN_BSS\n");
560 if (changed_flags & FIF_ALLMULTI)
561 wiphy_dbg(wiphy, "FIF_ALLMULTI\n");
562 if (changed_flags & FIF_FCSFAIL)
563 wiphy_dbg(wiphy, "FIF_FCSFAIL\n");
564 if (changed_flags & FIF_CONTROL)
565 wiphy_dbg(wiphy, "FIF_CONTROL\n");
566 if (changed_flags & FIF_OTHER_BSS)
567 wiphy_dbg(wiphy, "FIF_OTHER_BSS\n");
568 if (changed_flags & FIF_PSPOLL)
569 wiphy_dbg(wiphy, "FIF_PSPOLL\n");
570 if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
571 wiphy_dbg(wiphy, "FIF_BCN_PRBRESP_PROMISC\n");
572
573 spin_lock_bh(&wl->lock);
574 brcms_c_mac_promisc(wl->wlc, *total_flags);
575 spin_unlock_bh(&wl->lock);
576 return;
577 }
578
579 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
580 {
581 struct brcms_info *wl = hw->priv;
582 spin_lock_bh(&wl->lock);
583 brcms_c_scan_start(wl->wlc);
584 spin_unlock_bh(&wl->lock);
585 return;
586 }
587
588 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
589 {
590 struct brcms_info *wl = hw->priv;
591 spin_lock_bh(&wl->lock);
592 brcms_c_scan_stop(wl->wlc);
593 spin_unlock_bh(&wl->lock);
594 return;
595 }
596
597 static int
598 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
599 const struct ieee80211_tx_queue_params *params)
600 {
601 struct brcms_info *wl = hw->priv;
602
603 spin_lock_bh(&wl->lock);
604 brcms_c_wme_setparams(wl->wlc, queue, params, true);
605 spin_unlock_bh(&wl->lock);
606
607 return 0;
608 }
609
610 static int
611 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
612 struct ieee80211_sta *sta)
613 {
614 struct brcms_info *wl = hw->priv;
615 struct scb *scb = &wl->wlc->pri_scb;
616
617 brcms_c_init_scb(scb);
618
619 wl->pub->global_ampdu = &(scb->scb_ampdu);
620 wl->pub->global_ampdu->scb = scb;
621 wl->pub->global_ampdu->max_pdu = 16;
622
623 /*
624 * minstrel_ht initiates addBA on our behalf by calling
625 * ieee80211_start_tx_ba_session()
626 */
627 return 0;
628 }
629
630 static int
631 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
632 struct ieee80211_vif *vif,
633 enum ieee80211_ampdu_mlme_action action,
634 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
635 u8 buf_size)
636 {
637 struct brcms_info *wl = hw->priv;
638 struct scb *scb = &wl->wlc->pri_scb;
639 int status;
640
641 if (WARN_ON(scb->magic != SCB_MAGIC))
642 return -EIDRM;
643 switch (action) {
644 case IEEE80211_AMPDU_RX_START:
645 break;
646 case IEEE80211_AMPDU_RX_STOP:
647 break;
648 case IEEE80211_AMPDU_TX_START:
649 spin_lock_bh(&wl->lock);
650 status = brcms_c_aggregatable(wl->wlc, tid);
651 spin_unlock_bh(&wl->lock);
652 if (!status) {
653 wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
654 tid);
655 return -EINVAL;
656 }
657 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
658 break;
659
660 case IEEE80211_AMPDU_TX_STOP:
661 spin_lock_bh(&wl->lock);
662 brcms_c_ampdu_flush(wl->wlc, sta, tid);
663 spin_unlock_bh(&wl->lock);
664 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
665 break;
666 case IEEE80211_AMPDU_TX_OPERATIONAL:
667 /*
668 * BA window size from ADDBA response ('buf_size') defines how
669 * many outstanding MPDUs are allowed for the BA stream by
670 * recipient and traffic class. 'ampdu_factor' gives maximum
671 * AMPDU size.
672 */
673 spin_lock_bh(&wl->lock);
674 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
675 (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
676 sta->ht_cap.ampdu_factor)) - 1);
677 spin_unlock_bh(&wl->lock);
678 /* Power save wakeup */
679 break;
680 default:
681 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
682 __func__);
683 }
684
685 return 0;
686 }
687
688 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
689 {
690 struct brcms_info *wl = hw->priv;
691 bool blocked;
692
693 spin_lock_bh(&wl->lock);
694 blocked = brcms_c_check_radio_disabled(wl->wlc);
695 spin_unlock_bh(&wl->lock);
696
697 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
698 }
699
700 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
701 {
702 struct brcms_info *wl = hw->priv;
703
704 no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
705
706 /* wait for packet queue and dma fifos to run empty */
707 spin_lock_bh(&wl->lock);
708 brcms_c_wait_for_tx_completion(wl->wlc, drop);
709 spin_unlock_bh(&wl->lock);
710 }
711
712 static const struct ieee80211_ops brcms_ops = {
713 .tx = brcms_ops_tx,
714 .start = brcms_ops_start,
715 .stop = brcms_ops_stop,
716 .add_interface = brcms_ops_add_interface,
717 .remove_interface = brcms_ops_remove_interface,
718 .config = brcms_ops_config,
719 .bss_info_changed = brcms_ops_bss_info_changed,
720 .configure_filter = brcms_ops_configure_filter,
721 .sw_scan_start = brcms_ops_sw_scan_start,
722 .sw_scan_complete = brcms_ops_sw_scan_complete,
723 .conf_tx = brcms_ops_conf_tx,
724 .sta_add = brcms_ops_sta_add,
725 .ampdu_action = brcms_ops_ampdu_action,
726 .rfkill_poll = brcms_ops_rfkill_poll,
727 .flush = brcms_ops_flush,
728 };
729
730 void brcms_dpc(unsigned long data)
731 {
732 struct brcms_info *wl;
733
734 wl = (struct brcms_info *) data;
735
736 spin_lock_bh(&wl->lock);
737
738 /* call the common second level interrupt handler */
739 if (wl->pub->up) {
740 if (wl->resched) {
741 unsigned long flags;
742
743 spin_lock_irqsave(&wl->isr_lock, flags);
744 brcms_c_intrsupd(wl->wlc);
745 spin_unlock_irqrestore(&wl->isr_lock, flags);
746 }
747
748 wl->resched = brcms_c_dpc(wl->wlc, true);
749 }
750
751 /* brcms_c_dpc() may bring the driver down */
752 if (!wl->pub->up)
753 goto done;
754
755 /* re-schedule dpc */
756 if (wl->resched)
757 tasklet_schedule(&wl->tasklet);
758 else
759 /* re-enable interrupts */
760 brcms_intrson(wl);
761
762 done:
763 spin_unlock_bh(&wl->lock);
764 }
765
766 /*
767 * Precondition: Since this function is called in brcms_pci_probe() context,
768 * no locking is required.
769 */
770 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
771 {
772 int status;
773 struct device *device = &pdev->dev;
774 char fw_name[100];
775 int i;
776
777 memset(&wl->fw, 0, sizeof(struct brcms_firmware));
778 for (i = 0; i < MAX_FW_IMAGES; i++) {
779 if (brcms_firmwares[i] == NULL)
780 break;
781 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
782 UCODE_LOADER_API_VER);
783 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
784 if (status) {
785 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
786 KBUILD_MODNAME, fw_name);
787 return status;
788 }
789 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
790 UCODE_LOADER_API_VER);
791 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
792 if (status) {
793 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
794 KBUILD_MODNAME, fw_name);
795 return status;
796 }
797 wl->fw.hdr_num_entries[i] =
798 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
799 }
800 wl->fw.fw_cnt = i;
801 return brcms_ucode_data_init(wl, &wl->ucode);
802 }
803
804 /*
805 * Precondition: Since this function is called in brcms_pci_probe() context,
806 * no locking is required.
807 */
808 static void brcms_release_fw(struct brcms_info *wl)
809 {
810 int i;
811 for (i = 0; i < MAX_FW_IMAGES; i++) {
812 release_firmware(wl->fw.fw_bin[i]);
813 release_firmware(wl->fw.fw_hdr[i]);
814 }
815 }
816
817 /**
818 * This function frees the WL per-device resources.
819 *
820 * This function frees resources owned by the WL device pointed to
821 * by the wl parameter.
822 *
823 * precondition: can both be called locked and unlocked
824 *
825 */
826 static void brcms_free(struct brcms_info *wl)
827 {
828 struct brcms_timer *t, *next;
829
830 /* free ucode data */
831 if (wl->fw.fw_cnt)
832 brcms_ucode_data_free(&wl->ucode);
833 if (wl->irq)
834 free_irq(wl->irq, wl);
835
836 /* kill dpc */
837 tasklet_kill(&wl->tasklet);
838
839 if (wl->pub)
840 brcms_c_module_unregister(wl->pub, "linux", wl);
841
842 /* free common resources */
843 if (wl->wlc) {
844 brcms_c_detach(wl->wlc);
845 wl->wlc = NULL;
846 wl->pub = NULL;
847 }
848
849 /* virtual interface deletion is deferred so we cannot spinwait */
850
851 /* wait for all pending callbacks to complete */
852 while (atomic_read(&wl->callbacks) > 0)
853 schedule();
854
855 /* free timers */
856 for (t = wl->timers; t; t = next) {
857 next = t->next;
858 #ifdef DEBUG
859 kfree(t->name);
860 #endif
861 kfree(t);
862 }
863 }
864
865 /*
866 * called from both kernel as from this kernel module (error flow on attach)
867 * precondition: perimeter lock is not acquired.
868 */
869 static void brcms_remove(struct bcma_device *pdev)
870 {
871 struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
872 struct brcms_info *wl = hw->priv;
873
874 if (wl->wlc) {
875 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
876 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
877 ieee80211_unregister_hw(hw);
878 }
879
880 brcms_free(wl);
881
882 bcma_set_drvdata(pdev, NULL);
883 ieee80211_free_hw(hw);
884 }
885
886 static irqreturn_t brcms_isr(int irq, void *dev_id)
887 {
888 struct brcms_info *wl;
889 bool ours, wantdpc;
890
891 wl = (struct brcms_info *) dev_id;
892
893 spin_lock(&wl->isr_lock);
894
895 /* call common first level interrupt handler */
896 ours = brcms_c_isr(wl->wlc, &wantdpc);
897 if (ours) {
898 /* if more to do... */
899 if (wantdpc) {
900
901 /* ...and call the second level interrupt handler */
902 /* schedule dpc */
903 tasklet_schedule(&wl->tasklet);
904 }
905 }
906
907 spin_unlock(&wl->isr_lock);
908
909 return IRQ_RETVAL(ours);
910 }
911
912 /*
913 * is called in brcms_pci_probe() context, therefore no locking required.
914 */
915 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
916 {
917 struct brcms_info *wl = hw->priv;
918 struct brcms_c_info *wlc = wl->wlc;
919 struct ieee80211_supported_band *band;
920 int has_5g = 0;
921 u16 phy_type;
922
923 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
924 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
925
926 phy_type = brcms_c_get_phy_type(wl->wlc, 0);
927 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
928 band = &wlc->bandstate[BAND_2G_INDEX]->band;
929 *band = brcms_band_2GHz_nphy_template;
930 if (phy_type == PHY_TYPE_LCN) {
931 /* Single stream */
932 band->ht_cap.mcs.rx_mask[1] = 0;
933 band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
934 }
935 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
936 } else {
937 return -EPERM;
938 }
939
940 /* Assume all bands use the same phy. True for 11n devices. */
941 if (wl->pub->_nbands > 1) {
942 has_5g++;
943 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
944 band = &wlc->bandstate[BAND_5G_INDEX]->band;
945 *band = brcms_band_5GHz_nphy_template;
946 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
947 } else {
948 return -EPERM;
949 }
950 }
951 return 0;
952 }
953
954 /*
955 * is called in brcms_pci_probe() context, therefore no locking required.
956 */
957 static int ieee_hw_init(struct ieee80211_hw *hw)
958 {
959 hw->flags = IEEE80211_HW_SIGNAL_DBM
960 /* | IEEE80211_HW_CONNECTION_MONITOR What is this? */
961 | IEEE80211_HW_REPORTS_TX_ACK_STATUS
962 | IEEE80211_HW_AMPDU_AGGREGATION;
963
964 hw->extra_tx_headroom = brcms_c_get_header_len();
965 hw->queues = N_TX_QUEUES;
966 hw->max_rates = 2; /* Primary rate and 1 fallback rate */
967
968 /* channel change time is dependent on chip and band */
969 hw->channel_change_time = 7 * 1000;
970 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
971
972 hw->rate_control_algorithm = "minstrel_ht";
973
974 hw->sta_data_size = 0;
975 return ieee_hw_rate_init(hw);
976 }
977
978 /**
979 * attach to the WL device.
980 *
981 * Attach to the WL device identified by vendor and device parameters.
982 * regs is a host accessible memory address pointing to WL device registers.
983 *
984 * brcms_attach is not defined as static because in the case where no bus
985 * is defined, wl_attach will never be called, and thus, gcc will issue
986 * a warning that this function is defined but not used if we declare
987 * it as static.
988 *
989 *
990 * is called in brcms_bcma_probe() context, therefore no locking required.
991 */
992 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
993 {
994 struct brcms_info *wl = NULL;
995 int unit, err;
996 struct ieee80211_hw *hw;
997 u8 perm[ETH_ALEN];
998
999 unit = n_adapters_found;
1000 err = 0;
1001
1002 if (unit < 0)
1003 return NULL;
1004
1005 /* allocate private info */
1006 hw = bcma_get_drvdata(pdev);
1007 if (hw != NULL)
1008 wl = hw->priv;
1009 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1010 return NULL;
1011 wl->wiphy = hw->wiphy;
1012
1013 atomic_set(&wl->callbacks, 0);
1014
1015 /* setup the bottom half handler */
1016 tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1017
1018 spin_lock_init(&wl->lock);
1019 spin_lock_init(&wl->isr_lock);
1020
1021 /* prepare ucode */
1022 if (brcms_request_fw(wl, pdev) < 0) {
1023 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1024 "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1025 brcms_release_fw(wl);
1026 brcms_remove(pdev);
1027 return NULL;
1028 }
1029
1030 /* common load-time initialization */
1031 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1032 brcms_release_fw(wl);
1033 if (!wl->wlc) {
1034 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1035 KBUILD_MODNAME, err);
1036 goto fail;
1037 }
1038 wl->pub = brcms_c_pub(wl->wlc);
1039
1040 wl->pub->ieee_hw = hw;
1041
1042 /* register our interrupt handler */
1043 if (request_irq(pdev->irq, brcms_isr,
1044 IRQF_SHARED, KBUILD_MODNAME, wl)) {
1045 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1046 goto fail;
1047 }
1048 wl->irq = pdev->irq;
1049
1050 /* register module */
1051 brcms_c_module_register(wl->pub, "linux", wl, NULL);
1052
1053 if (ieee_hw_init(hw)) {
1054 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1055 __func__);
1056 goto fail;
1057 }
1058
1059 brcms_c_regd_init(wl->wlc);
1060
1061 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1062 if (WARN_ON(!is_valid_ether_addr(perm)))
1063 goto fail;
1064 SET_IEEE80211_PERM_ADDR(hw, perm);
1065
1066 err = ieee80211_register_hw(hw);
1067 if (err)
1068 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1069 "%d\n", __func__, err);
1070
1071 if (wl->pub->srom_ccode[0] &&
1072 regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1073 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1074
1075 n_adapters_found++;
1076 return wl;
1077
1078 fail:
1079 brcms_free(wl);
1080 return NULL;
1081 }
1082
1083
1084
1085 /**
1086 * determines if a device is a WL device, and if so, attaches it.
1087 *
1088 * This function determines if a device pointed to by pdev is a WL device,
1089 * and if so, performs a brcms_attach() on it.
1090 *
1091 * Perimeter lock is initialized in the course of this function.
1092 */
1093 static int __devinit brcms_bcma_probe(struct bcma_device *pdev)
1094 {
1095 struct brcms_info *wl;
1096 struct ieee80211_hw *hw;
1097
1098 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1099 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1100 pdev->irq);
1101
1102 if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1103 (pdev->id.id != BCMA_CORE_80211))
1104 return -ENODEV;
1105
1106 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1107 if (!hw) {
1108 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1109 return -ENOMEM;
1110 }
1111
1112 SET_IEEE80211_DEV(hw, &pdev->dev);
1113
1114 bcma_set_drvdata(pdev, hw);
1115
1116 memset(hw->priv, 0, sizeof(*wl));
1117
1118 wl = brcms_attach(pdev);
1119 if (!wl) {
1120 pr_err("%s: brcms_attach failed!\n", __func__);
1121 return -ENODEV;
1122 }
1123 return 0;
1124 }
1125
1126 static int brcms_suspend(struct bcma_device *pdev)
1127 {
1128 struct brcms_info *wl;
1129 struct ieee80211_hw *hw;
1130
1131 hw = bcma_get_drvdata(pdev);
1132 wl = hw->priv;
1133 if (!wl) {
1134 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1135 __func__);
1136 return -ENODEV;
1137 }
1138
1139 /* only need to flag hw is down for proper resume */
1140 spin_lock_bh(&wl->lock);
1141 wl->pub->hw_up = false;
1142 spin_unlock_bh(&wl->lock);
1143
1144 pr_debug("brcms_suspend ok\n");
1145
1146 return 0;
1147 }
1148
1149 static int brcms_resume(struct bcma_device *pdev)
1150 {
1151 pr_debug("brcms_resume ok\n");
1152 return 0;
1153 }
1154
1155 static struct bcma_driver brcms_bcma_driver = {
1156 .name = KBUILD_MODNAME,
1157 .probe = brcms_bcma_probe,
1158 .suspend = brcms_suspend,
1159 .resume = brcms_resume,
1160 .remove = __devexit_p(brcms_remove),
1161 .id_table = brcms_coreid_table,
1162 };
1163
1164 /**
1165 * This is the main entry point for the brcmsmac driver.
1166 *
1167 * This function is scheduled upon module initialization and
1168 * does the driver registration, which result in brcms_bcma_probe()
1169 * call resulting in the driver bringup.
1170 */
1171 static void brcms_driver_init(struct work_struct *work)
1172 {
1173 int error;
1174
1175 error = bcma_driver_register(&brcms_bcma_driver);
1176 if (error)
1177 pr_err("%s: register returned %d\n", __func__, error);
1178 }
1179
1180 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1181
1182 static int __init brcms_module_init(void)
1183 {
1184 #ifdef DEBUG
1185 if (msglevel != 0xdeadbeef)
1186 brcm_msg_level = msglevel;
1187 #endif
1188 if (!schedule_work(&brcms_driver_work))
1189 return -EBUSY;
1190
1191 return 0;
1192 }
1193
1194 /**
1195 * This function unloads the brcmsmac driver from the system.
1196 *
1197 * This function unconditionally unloads the brcmsmac driver module from the
1198 * system.
1199 *
1200 */
1201 static void __exit brcms_module_exit(void)
1202 {
1203 cancel_work_sync(&brcms_driver_work);
1204 bcma_driver_unregister(&brcms_bcma_driver);
1205 }
1206
1207 module_init(brcms_module_init);
1208 module_exit(brcms_module_exit);
1209
1210 /*
1211 * precondition: perimeter lock has been acquired
1212 */
1213 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1214 bool state, int prio)
1215 {
1216 wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1217 }
1218
1219 /*
1220 * precondition: perimeter lock has been acquired
1221 */
1222 void brcms_init(struct brcms_info *wl)
1223 {
1224 BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1225 brcms_reset(wl);
1226 brcms_c_init(wl->wlc, wl->mute_tx);
1227 }
1228
1229 /*
1230 * precondition: perimeter lock has been acquired
1231 */
1232 uint brcms_reset(struct brcms_info *wl)
1233 {
1234 BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1235 brcms_c_reset(wl->wlc);
1236
1237 /* dpc will not be rescheduled */
1238 wl->resched = false;
1239
1240 return 0;
1241 }
1242
1243 void brcms_fatal_error(struct brcms_info *wl)
1244 {
1245 wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1246 wl->wlc->pub->unit);
1247 brcms_reset(wl);
1248 ieee80211_restart_hw(wl->pub->ieee_hw);
1249 }
1250
1251 /*
1252 * These are interrupt on/off entry points. Disable interrupts
1253 * during interrupt state transition.
1254 */
1255 void brcms_intrson(struct brcms_info *wl)
1256 {
1257 unsigned long flags;
1258
1259 spin_lock_irqsave(&wl->isr_lock, flags);
1260 brcms_c_intrson(wl->wlc);
1261 spin_unlock_irqrestore(&wl->isr_lock, flags);
1262 }
1263
1264 u32 brcms_intrsoff(struct brcms_info *wl)
1265 {
1266 unsigned long flags;
1267 u32 status;
1268
1269 spin_lock_irqsave(&wl->isr_lock, flags);
1270 status = brcms_c_intrsoff(wl->wlc);
1271 spin_unlock_irqrestore(&wl->isr_lock, flags);
1272 return status;
1273 }
1274
1275 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1276 {
1277 unsigned long flags;
1278
1279 spin_lock_irqsave(&wl->isr_lock, flags);
1280 brcms_c_intrsrestore(wl->wlc, macintmask);
1281 spin_unlock_irqrestore(&wl->isr_lock, flags);
1282 }
1283
1284 /*
1285 * precondition: perimeter lock has been acquired
1286 */
1287 int brcms_up(struct brcms_info *wl)
1288 {
1289 int error = 0;
1290
1291 if (wl->pub->up)
1292 return 0;
1293
1294 error = brcms_c_up(wl->wlc);
1295
1296 return error;
1297 }
1298
1299 /*
1300 * precondition: perimeter lock has been acquired
1301 */
1302 void brcms_down(struct brcms_info *wl)
1303 {
1304 uint callbacks, ret_val = 0;
1305
1306 /* call common down function */
1307 ret_val = brcms_c_down(wl->wlc);
1308 callbacks = atomic_read(&wl->callbacks) - ret_val;
1309
1310 /* wait for down callbacks to complete */
1311 spin_unlock_bh(&wl->lock);
1312
1313 /* For HIGH_only driver, it's important to actually schedule other work,
1314 * not just spin wait since everything runs at schedule level
1315 */
1316 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1317
1318 spin_lock_bh(&wl->lock);
1319 }
1320
1321 /*
1322 * precondition: perimeter lock is not acquired
1323 */
1324 static void _brcms_timer(struct work_struct *work)
1325 {
1326 struct brcms_timer *t = container_of(work, struct brcms_timer,
1327 dly_wrk.work);
1328
1329 spin_lock_bh(&t->wl->lock);
1330
1331 if (t->set) {
1332 if (t->periodic) {
1333 atomic_inc(&t->wl->callbacks);
1334 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1335 &t->dly_wrk,
1336 msecs_to_jiffies(t->ms));
1337 } else {
1338 t->set = false;
1339 }
1340
1341 t->fn(t->arg);
1342 }
1343
1344 atomic_dec(&t->wl->callbacks);
1345
1346 spin_unlock_bh(&t->wl->lock);
1347 }
1348
1349 /*
1350 * Adds a timer to the list. Caller supplies a timer function.
1351 * Is called from wlc.
1352 *
1353 * precondition: perimeter lock has been acquired
1354 */
1355 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1356 void (*fn) (void *arg),
1357 void *arg, const char *name)
1358 {
1359 struct brcms_timer *t;
1360
1361 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1362 if (!t)
1363 return NULL;
1364
1365 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1366 t->wl = wl;
1367 t->fn = fn;
1368 t->arg = arg;
1369 t->next = wl->timers;
1370 wl->timers = t;
1371
1372 #ifdef DEBUG
1373 t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1374 if (t->name)
1375 strcpy(t->name, name);
1376 #endif
1377
1378 return t;
1379 }
1380
1381 /*
1382 * adds only the kernel timer since it's going to be more accurate
1383 * as well as it's easier to make it periodic
1384 *
1385 * precondition: perimeter lock has been acquired
1386 */
1387 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1388 {
1389 struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1390
1391 #ifdef DEBUG
1392 if (t->set)
1393 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1394 __func__, t->name, periodic);
1395 #endif
1396 t->ms = ms;
1397 t->periodic = (bool) periodic;
1398 t->set = true;
1399
1400 atomic_inc(&t->wl->callbacks);
1401
1402 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1403 }
1404
1405 /*
1406 * return true if timer successfully deleted, false if still pending
1407 *
1408 * precondition: perimeter lock has been acquired
1409 */
1410 bool brcms_del_timer(struct brcms_timer *t)
1411 {
1412 if (t->set) {
1413 t->set = false;
1414 if (!cancel_delayed_work(&t->dly_wrk))
1415 return false;
1416
1417 atomic_dec(&t->wl->callbacks);
1418 }
1419
1420 return true;
1421 }
1422
1423 /*
1424 * precondition: perimeter lock has been acquired
1425 */
1426 void brcms_free_timer(struct brcms_timer *t)
1427 {
1428 struct brcms_info *wl = t->wl;
1429 struct brcms_timer *tmp;
1430
1431 /* delete the timer in case it is active */
1432 brcms_del_timer(t);
1433
1434 if (wl->timers == t) {
1435 wl->timers = wl->timers->next;
1436 #ifdef DEBUG
1437 kfree(t->name);
1438 #endif
1439 kfree(t);
1440 return;
1441
1442 }
1443
1444 tmp = wl->timers;
1445 while (tmp) {
1446 if (tmp->next == t) {
1447 tmp->next = t->next;
1448 #ifdef DEBUG
1449 kfree(t->name);
1450 #endif
1451 kfree(t);
1452 return;
1453 }
1454 tmp = tmp->next;
1455 }
1456
1457 }
1458
1459 /*
1460 * precondition: perimeter lock has been acquired
1461 */
1462 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1463 {
1464 int i, entry;
1465 const u8 *pdata;
1466 struct firmware_hdr *hdr;
1467 for (i = 0; i < wl->fw.fw_cnt; i++) {
1468 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1469 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1470 entry++, hdr++) {
1471 u32 len = le32_to_cpu(hdr->len);
1472 if (le32_to_cpu(hdr->idx) == idx) {
1473 pdata = wl->fw.fw_bin[i]->data +
1474 le32_to_cpu(hdr->offset);
1475 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1476 if (*pbuf == NULL)
1477 goto fail;
1478
1479 return 0;
1480 }
1481 }
1482 }
1483 wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1484 idx);
1485 *pbuf = NULL;
1486 fail:
1487 return -ENODATA;
1488 }
1489
1490 /*
1491 * Precondition: Since this function is called in brcms_bcma_probe() context,
1492 * no locking is required.
1493 */
1494 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1495 {
1496 int i, entry;
1497 const u8 *pdata;
1498 struct firmware_hdr *hdr;
1499 for (i = 0; i < wl->fw.fw_cnt; i++) {
1500 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1501 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1502 entry++, hdr++) {
1503 if (le32_to_cpu(hdr->idx) == idx) {
1504 pdata = wl->fw.fw_bin[i]->data +
1505 le32_to_cpu(hdr->offset);
1506 if (le32_to_cpu(hdr->len) != 4) {
1507 wiphy_err(wl->wiphy,
1508 "ERROR: fw hdr len\n");
1509 return -ENOMSG;
1510 }
1511 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1512 return 0;
1513 }
1514 }
1515 }
1516 wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1517 return -ENOMSG;
1518 }
1519
1520 /*
1521 * precondition: can both be called locked and unlocked
1522 */
1523 void brcms_ucode_free_buf(void *p)
1524 {
1525 kfree(p);
1526 }
1527
1528 /*
1529 * checks validity of all firmware images loaded from user space
1530 *
1531 * Precondition: Since this function is called in brcms_bcma_probe() context,
1532 * no locking is required.
1533 */
1534 int brcms_check_firmwares(struct brcms_info *wl)
1535 {
1536 int i;
1537 int entry;
1538 int rc = 0;
1539 const struct firmware *fw;
1540 const struct firmware *fw_hdr;
1541 struct firmware_hdr *ucode_hdr;
1542 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1543 fw = wl->fw.fw_bin[i];
1544 fw_hdr = wl->fw.fw_hdr[i];
1545 if (fw == NULL && fw_hdr == NULL) {
1546 break;
1547 } else if (fw == NULL || fw_hdr == NULL) {
1548 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1549 __func__);
1550 rc = -EBADF;
1551 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1552 wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1553 "size %zu/%zu\n", __func__, fw_hdr->size,
1554 sizeof(struct firmware_hdr));
1555 rc = -EBADF;
1556 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1557 wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1558 "%zu\n", __func__, fw->size);
1559 rc = -EBADF;
1560 } else {
1561 /* check if ucode section overruns firmware image */
1562 ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1563 for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1564 !rc; entry++, ucode_hdr++) {
1565 if (le32_to_cpu(ucode_hdr->offset) +
1566 le32_to_cpu(ucode_hdr->len) >
1567 fw->size) {
1568 wiphy_err(wl->wiphy,
1569 "%s: conflicting bin/hdr\n",
1570 __func__);
1571 rc = -EBADF;
1572 }
1573 }
1574 }
1575 }
1576 if (rc == 0 && wl->fw.fw_cnt != i) {
1577 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1578 wl->fw.fw_cnt);
1579 rc = -EBADF;
1580 }
1581 return rc;
1582 }
1583
1584 /*
1585 * precondition: perimeter lock has been acquired
1586 */
1587 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1588 {
1589 bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1590
1591 spin_unlock_bh(&wl->lock);
1592 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1593 if (blocked)
1594 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1595 spin_lock_bh(&wl->lock);
1596 return blocked;
1597 }
1598
1599 /*
1600 * precondition: perimeter lock has been acquired
1601 */
1602 void brcms_msleep(struct brcms_info *wl, uint ms)
1603 {
1604 spin_unlock_bh(&wl->lock);
1605 msleep(ms);
1606 spin_lock_bh(&wl->lock);
1607 }
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