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 "nicpci.h"
29 #include "phy/phy_int.h"
30 #include "d11.h"
31 #include "channel.h"
32 #include "scb.h"
33 #include "pub.h"
34 #include "ucode_loader.h"
35 #include "mac80211_if.h"
36 #include "main.h"
37
38 #define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */
39
40 /* Flags we support */
41 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
42 FIF_ALLMULTI | \
43 FIF_FCSFAIL | \
44 FIF_CONTROL | \
45 FIF_OTHER_BSS | \
46 FIF_BCN_PRBRESP_PROMISC | \
47 FIF_PSPOLL)
48
49 #define CHAN2GHZ(channel, freqency, chflags) { \
50 .band = IEEE80211_BAND_2GHZ, \
51 .center_freq = (freqency), \
52 .hw_value = (channel), \
53 .flags = chflags, \
54 .max_antenna_gain = 0, \
55 .max_power = 19, \
56 }
57
58 #define CHAN5GHZ(channel, chflags) { \
59 .band = IEEE80211_BAND_5GHZ, \
60 .center_freq = 5000 + 5*(channel), \
61 .hw_value = (channel), \
62 .flags = chflags, \
63 .max_antenna_gain = 0, \
64 .max_power = 21, \
65 }
66
67 #define RATE(rate100m, _flags) { \
68 .bitrate = (rate100m), \
69 .flags = (_flags), \
70 .hw_value = (rate100m / 5), \
71 }
72
73 struct firmware_hdr {
74 __le32 offset;
75 __le32 len;
76 __le32 idx;
77 };
78
79 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
80 "brcm/bcm43xx",
81 NULL
82 };
83
84 static int n_adapters_found;
85
86 MODULE_AUTHOR("Broadcom Corporation");
87 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
88 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
89 MODULE_LICENSE("Dual BSD/GPL");
90
91
92 /* recognized BCMA Core IDs */
93 static struct bcma_device_id brcms_coreid_table[] = {
94 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
95 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
96 BCMA_CORETABLE_END
97 };
98 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
99
100 #ifdef DEBUG
101 static int msglevel = 0xdeadbeef;
102 module_param(msglevel, int, 0);
103 #endif /* DEBUG */
104
105 static struct ieee80211_channel brcms_2ghz_chantable[] = {
106 CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
107 CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
108 CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
109 CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
110 CHAN2GHZ(5, 2432, 0),
111 CHAN2GHZ(6, 2437, 0),
112 CHAN2GHZ(7, 2442, 0),
113 CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
114 CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
115 CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
116 CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
117 CHAN2GHZ(12, 2467,
118 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
119 IEEE80211_CHAN_NO_HT40PLUS),
120 CHAN2GHZ(13, 2472,
121 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
122 IEEE80211_CHAN_NO_HT40PLUS),
123 CHAN2GHZ(14, 2484,
124 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
125 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
126 };
127
128 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
129 /* UNII-1 */
130 CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
131 CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
132 CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
133 CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
134 /* UNII-2 */
135 CHAN5GHZ(52,
136 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
137 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
138 CHAN5GHZ(56,
139 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
140 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
141 CHAN5GHZ(60,
142 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
143 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
144 CHAN5GHZ(64,
145 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
146 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
147 /* MID */
148 CHAN5GHZ(100,
149 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
150 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
151 CHAN5GHZ(104,
152 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
153 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
154 CHAN5GHZ(108,
155 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
156 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
157 CHAN5GHZ(112,
158 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
159 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
160 CHAN5GHZ(116,
161 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
162 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
163 CHAN5GHZ(120,
164 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
165 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
166 CHAN5GHZ(124,
167 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
168 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
169 CHAN5GHZ(128,
170 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
171 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
172 CHAN5GHZ(132,
173 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
174 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
175 CHAN5GHZ(136,
176 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
177 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
178 CHAN5GHZ(140,
179 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
180 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
181 IEEE80211_CHAN_NO_HT40MINUS),
182 /* UNII-3 */
183 CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
184 CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
185 CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
186 CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
187 CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
188 };
189
190 /*
191 * The rate table is used for both 2.4G and 5G rates. The
192 * latter being a subset as it does not support CCK rates.
193 */
194 static struct ieee80211_rate legacy_ratetable[] = {
195 RATE(10, 0),
196 RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
197 RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
198 RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
199 RATE(60, 0),
200 RATE(90, 0),
201 RATE(120, 0),
202 RATE(180, 0),
203 RATE(240, 0),
204 RATE(360, 0),
205 RATE(480, 0),
206 RATE(540, 0),
207 };
208
209 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
210 .band = IEEE80211_BAND_2GHZ,
211 .channels = brcms_2ghz_chantable,
212 .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
213 .bitrates = legacy_ratetable,
214 .n_bitrates = ARRAY_SIZE(legacy_ratetable),
215 .ht_cap = {
216 /* from include/linux/ieee80211.h */
217 .cap = IEEE80211_HT_CAP_GRN_FLD |
218 IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
219 .ht_supported = true,
220 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
221 .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
222 .mcs = {
223 /* placeholders for now */
224 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
225 .rx_highest = cpu_to_le16(500),
226 .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
227 }
228 };
229
230 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
231 .band = IEEE80211_BAND_5GHZ,
232 .channels = brcms_5ghz_nphy_chantable,
233 .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
234 .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
235 .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
236 BRCMS_LEGACY_5G_RATE_OFFSET,
237 .ht_cap = {
238 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
239 IEEE80211_HT_CAP_SGI_40,
240 .ht_supported = true,
241 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
242 .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
243 .mcs = {
244 /* placeholders for now */
245 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
246 .rx_highest = cpu_to_le16(500),
247 .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
248 }
249 };
250
251 /* flags the given rate in rateset as requested */
brcms_set_basic_rate(struct brcm_rateset * rs,u16 rate,bool is_br)252 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
253 {
254 u32 i;
255
256 for (i = 0; i < rs->count; i++) {
257 if (rate != (rs->rates[i] & 0x7f))
258 continue;
259
260 if (is_br)
261 rs->rates[i] |= BRCMS_RATE_FLAG;
262 else
263 rs->rates[i] &= BRCMS_RATE_MASK;
264 return;
265 }
266 }
267
brcms_ops_tx(struct ieee80211_hw * hw,struct sk_buff * skb)268 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
269 {
270 struct brcms_info *wl = hw->priv;
271
272 spin_lock_bh(&wl->lock);
273 if (!wl->pub->up) {
274 wiphy_err(wl->wiphy, "ops->tx called while down\n");
275 kfree_skb(skb);
276 goto done;
277 }
278 brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
279 done:
280 spin_unlock_bh(&wl->lock);
281 }
282
brcms_ops_start(struct ieee80211_hw * hw)283 static int brcms_ops_start(struct ieee80211_hw *hw)
284 {
285 struct brcms_info *wl = hw->priv;
286 bool blocked;
287 int err;
288
289 ieee80211_wake_queues(hw);
290 spin_lock_bh(&wl->lock);
291 blocked = brcms_rfkill_set_hw_state(wl);
292 spin_unlock_bh(&wl->lock);
293 if (!blocked)
294 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
295
296 spin_lock_bh(&wl->lock);
297 /* avoid acknowledging frames before a non-monitor device is added */
298 wl->mute_tx = true;
299
300 if (!wl->pub->up)
301 err = brcms_up(wl);
302 else
303 err = -ENODEV;
304 spin_unlock_bh(&wl->lock);
305
306 if (err != 0)
307 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
308 err);
309 return err;
310 }
311
brcms_ops_stop(struct ieee80211_hw * hw)312 static void brcms_ops_stop(struct ieee80211_hw *hw)
313 {
314 struct brcms_info *wl = hw->priv;
315 int status;
316
317 ieee80211_stop_queues(hw);
318
319 if (wl->wlc == NULL)
320 return;
321
322 spin_lock_bh(&wl->lock);
323 status = brcms_c_chipmatch(wl->wlc->hw->vendorid,
324 wl->wlc->hw->deviceid);
325 spin_unlock_bh(&wl->lock);
326 if (!status) {
327 wiphy_err(wl->wiphy,
328 "wl: brcms_ops_stop: chipmatch failed\n");
329 return;
330 }
331
332 /* put driver in down state */
333 spin_lock_bh(&wl->lock);
334 brcms_down(wl);
335 spin_unlock_bh(&wl->lock);
336 }
337
338 static int
brcms_ops_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)339 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
340 {
341 struct brcms_info *wl = hw->priv;
342
343 /* Just STA for now */
344 if (vif->type != NL80211_IFTYPE_STATION) {
345 wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
346 " STA for now\n", __func__, vif->type);
347 return -EOPNOTSUPP;
348 }
349
350 wl->mute_tx = false;
351 brcms_c_mute(wl->wlc, false);
352
353 return 0;
354 }
355
356 static void
brcms_ops_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)357 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
358 {
359 }
360
brcms_ops_config(struct ieee80211_hw * hw,u32 changed)361 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
362 {
363 struct ieee80211_conf *conf = &hw->conf;
364 struct brcms_info *wl = hw->priv;
365 int err = 0;
366 int new_int;
367 struct wiphy *wiphy = hw->wiphy;
368
369 spin_lock_bh(&wl->lock);
370 if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
371 brcms_c_set_beacon_listen_interval(wl->wlc,
372 conf->listen_interval);
373 }
374 if (changed & IEEE80211_CONF_CHANGE_MONITOR)
375 wiphy_dbg(wiphy, "%s: change monitor mode: %s\n",
376 __func__, conf->flags & IEEE80211_CONF_MONITOR ?
377 "true" : "false");
378 if (changed & IEEE80211_CONF_CHANGE_PS)
379 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
380 __func__, conf->flags & IEEE80211_CONF_PS ?
381 "true" : "false");
382
383 if (changed & IEEE80211_CONF_CHANGE_POWER) {
384 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
385 if (err < 0) {
386 wiphy_err(wiphy, "%s: Error setting power_level\n",
387 __func__);
388 goto config_out;
389 }
390 new_int = brcms_c_get_tx_power(wl->wlc);
391 if (new_int != conf->power_level)
392 wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
393 "\n", __func__, conf->power_level,
394 new_int);
395 }
396 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
397 if (conf->channel_type == NL80211_CHAN_HT20 ||
398 conf->channel_type == NL80211_CHAN_NO_HT)
399 err = brcms_c_set_channel(wl->wlc,
400 conf->channel->hw_value);
401 else
402 err = -ENOTSUPP;
403 }
404 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
405 err = brcms_c_set_rate_limit(wl->wlc,
406 conf->short_frame_max_tx_count,
407 conf->long_frame_max_tx_count);
408
409 config_out:
410 spin_unlock_bh(&wl->lock);
411 return err;
412 }
413
414 static void
brcms_ops_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)415 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
416 struct ieee80211_vif *vif,
417 struct ieee80211_bss_conf *info, u32 changed)
418 {
419 struct brcms_info *wl = hw->priv;
420 struct wiphy *wiphy = hw->wiphy;
421
422 if (changed & BSS_CHANGED_ASSOC) {
423 /* association status changed (associated/disassociated)
424 * also implies a change in the AID.
425 */
426 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
427 __func__, info->assoc ? "" : "dis");
428 spin_lock_bh(&wl->lock);
429 brcms_c_associate_upd(wl->wlc, info->assoc);
430 spin_unlock_bh(&wl->lock);
431 }
432 if (changed & BSS_CHANGED_ERP_SLOT) {
433 s8 val;
434
435 /* slot timing changed */
436 if (info->use_short_slot)
437 val = 1;
438 else
439 val = 0;
440 spin_lock_bh(&wl->lock);
441 brcms_c_set_shortslot_override(wl->wlc, val);
442 spin_unlock_bh(&wl->lock);
443 }
444
445 if (changed & BSS_CHANGED_HT) {
446 /* 802.11n parameters changed */
447 u16 mode = info->ht_operation_mode;
448
449 spin_lock_bh(&wl->lock);
450 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
451 mode & IEEE80211_HT_OP_MODE_PROTECTION);
452 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
453 mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
454 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
455 mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
456 spin_unlock_bh(&wl->lock);
457 }
458 if (changed & BSS_CHANGED_BASIC_RATES) {
459 struct ieee80211_supported_band *bi;
460 u32 br_mask, i;
461 u16 rate;
462 struct brcm_rateset rs;
463 int error;
464
465 /* retrieve the current rates */
466 spin_lock_bh(&wl->lock);
467 brcms_c_get_current_rateset(wl->wlc, &rs);
468 spin_unlock_bh(&wl->lock);
469
470 br_mask = info->basic_rates;
471 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
472 for (i = 0; i < bi->n_bitrates; i++) {
473 /* convert to internal rate value */
474 rate = (bi->bitrates[i].bitrate << 1) / 10;
475
476 /* set/clear basic rate flag */
477 brcms_set_basic_rate(&rs, rate, br_mask & 1);
478 br_mask >>= 1;
479 }
480
481 /* update the rate set */
482 spin_lock_bh(&wl->lock);
483 error = brcms_c_set_rateset(wl->wlc, &rs);
484 spin_unlock_bh(&wl->lock);
485 if (error)
486 wiphy_err(wiphy, "changing basic rates failed: %d\n",
487 error);
488 }
489 if (changed & BSS_CHANGED_BEACON_INT) {
490 /* Beacon interval changed */
491 spin_lock_bh(&wl->lock);
492 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
493 spin_unlock_bh(&wl->lock);
494 }
495 if (changed & BSS_CHANGED_BSSID) {
496 /* BSSID changed, for whatever reason (IBSS and managed mode) */
497 spin_lock_bh(&wl->lock);
498 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
499 spin_unlock_bh(&wl->lock);
500 }
501 if (changed & BSS_CHANGED_BEACON)
502 /* Beacon data changed, retrieve new beacon (beaconing modes) */
503 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
504
505 if (changed & BSS_CHANGED_BEACON_ENABLED) {
506 /* Beaconing should be enabled/disabled (beaconing modes) */
507 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
508 info->enable_beacon ? "true" : "false");
509 }
510
511 if (changed & BSS_CHANGED_CQM) {
512 /* Connection quality monitor config changed */
513 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
514 " (implement)\n", __func__, info->cqm_rssi_thold,
515 info->cqm_rssi_hyst);
516 }
517
518 if (changed & BSS_CHANGED_IBSS) {
519 /* IBSS join status changed */
520 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
521 info->ibss_joined ? "true" : "false");
522 }
523
524 if (changed & BSS_CHANGED_ARP_FILTER) {
525 /* Hardware ARP filter address list or state changed */
526 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
527 " (implement)\n", __func__, info->arp_filter_enabled ?
528 "true" : "false", info->arp_addr_cnt);
529 }
530
531 if (changed & BSS_CHANGED_QOS) {
532 /*
533 * QoS for this association was enabled/disabled.
534 * Note that it is only ever disabled for station mode.
535 */
536 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
537 info->qos ? "true" : "false");
538 }
539 return;
540 }
541
542 static void
brcms_ops_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)543 brcms_ops_configure_filter(struct ieee80211_hw *hw,
544 unsigned int changed_flags,
545 unsigned int *total_flags, u64 multicast)
546 {
547 struct brcms_info *wl = hw->priv;
548 struct wiphy *wiphy = hw->wiphy;
549
550 changed_flags &= MAC_FILTERS;
551 *total_flags &= MAC_FILTERS;
552
553 if (changed_flags & FIF_PROMISC_IN_BSS)
554 wiphy_dbg(wiphy, "FIF_PROMISC_IN_BSS\n");
555 if (changed_flags & FIF_ALLMULTI)
556 wiphy_dbg(wiphy, "FIF_ALLMULTI\n");
557 if (changed_flags & FIF_FCSFAIL)
558 wiphy_dbg(wiphy, "FIF_FCSFAIL\n");
559 if (changed_flags & FIF_CONTROL)
560 wiphy_dbg(wiphy, "FIF_CONTROL\n");
561 if (changed_flags & FIF_OTHER_BSS)
562 wiphy_dbg(wiphy, "FIF_OTHER_BSS\n");
563 if (changed_flags & FIF_PSPOLL)
564 wiphy_dbg(wiphy, "FIF_PSPOLL\n");
565 if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
566 wiphy_dbg(wiphy, "FIF_BCN_PRBRESP_PROMISC\n");
567
568 spin_lock_bh(&wl->lock);
569 brcms_c_mac_promisc(wl->wlc, *total_flags);
570 spin_unlock_bh(&wl->lock);
571 return;
572 }
573
brcms_ops_sw_scan_start(struct ieee80211_hw * hw)574 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
575 {
576 struct brcms_info *wl = hw->priv;
577 spin_lock_bh(&wl->lock);
578 brcms_c_scan_start(wl->wlc);
579 spin_unlock_bh(&wl->lock);
580 return;
581 }
582
brcms_ops_sw_scan_complete(struct ieee80211_hw * hw)583 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
584 {
585 struct brcms_info *wl = hw->priv;
586 spin_lock_bh(&wl->lock);
587 brcms_c_scan_stop(wl->wlc);
588 spin_unlock_bh(&wl->lock);
589 return;
590 }
591
592 static int
brcms_ops_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)593 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
594 const struct ieee80211_tx_queue_params *params)
595 {
596 struct brcms_info *wl = hw->priv;
597
598 spin_lock_bh(&wl->lock);
599 brcms_c_wme_setparams(wl->wlc, queue, params, true);
600 spin_unlock_bh(&wl->lock);
601
602 return 0;
603 }
604
605 static int
brcms_ops_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)606 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
607 struct ieee80211_sta *sta)
608 {
609 struct brcms_info *wl = hw->priv;
610 struct scb *scb = &wl->wlc->pri_scb;
611
612 brcms_c_init_scb(scb);
613
614 wl->pub->global_ampdu = &(scb->scb_ampdu);
615 wl->pub->global_ampdu->scb = scb;
616 wl->pub->global_ampdu->max_pdu = 16;
617
618 /*
619 * minstrel_ht initiates addBA on our behalf by calling
620 * ieee80211_start_tx_ba_session()
621 */
622 return 0;
623 }
624
625 static int
brcms_ops_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum ieee80211_ampdu_mlme_action action,struct ieee80211_sta * sta,u16 tid,u16 * ssn,u8 buf_size)626 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
627 struct ieee80211_vif *vif,
628 enum ieee80211_ampdu_mlme_action action,
629 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
630 u8 buf_size)
631 {
632 struct brcms_info *wl = hw->priv;
633 struct scb *scb = &wl->wlc->pri_scb;
634 int status;
635
636 if (WARN_ON(scb->magic != SCB_MAGIC))
637 return -EIDRM;
638 switch (action) {
639 case IEEE80211_AMPDU_RX_START:
640 break;
641 case IEEE80211_AMPDU_RX_STOP:
642 break;
643 case IEEE80211_AMPDU_TX_START:
644 spin_lock_bh(&wl->lock);
645 status = brcms_c_aggregatable(wl->wlc, tid);
646 spin_unlock_bh(&wl->lock);
647 if (!status) {
648 wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
649 tid);
650 return -EINVAL;
651 }
652 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
653 break;
654
655 case IEEE80211_AMPDU_TX_STOP:
656 spin_lock_bh(&wl->lock);
657 brcms_c_ampdu_flush(wl->wlc, sta, tid);
658 spin_unlock_bh(&wl->lock);
659 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
660 break;
661 case IEEE80211_AMPDU_TX_OPERATIONAL:
662 /*
663 * BA window size from ADDBA response ('buf_size') defines how
664 * many outstanding MPDUs are allowed for the BA stream by
665 * recipient and traffic class. 'ampdu_factor' gives maximum
666 * AMPDU size.
667 */
668 spin_lock_bh(&wl->lock);
669 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
670 (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
671 sta->ht_cap.ampdu_factor)) - 1);
672 spin_unlock_bh(&wl->lock);
673 /* Power save wakeup */
674 break;
675 default:
676 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
677 __func__);
678 }
679
680 return 0;
681 }
682
brcms_ops_rfkill_poll(struct ieee80211_hw * hw)683 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
684 {
685 struct brcms_info *wl = hw->priv;
686 bool blocked;
687
688 spin_lock_bh(&wl->lock);
689 blocked = brcms_c_check_radio_disabled(wl->wlc);
690 spin_unlock_bh(&wl->lock);
691
692 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
693 }
694
brcms_ops_flush(struct ieee80211_hw * hw,bool drop)695 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
696 {
697 struct brcms_info *wl = hw->priv;
698
699 no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
700
701 /* wait for packet queue and dma fifos to run empty */
702 spin_lock_bh(&wl->lock);
703 brcms_c_wait_for_tx_completion(wl->wlc, drop);
704 spin_unlock_bh(&wl->lock);
705 }
706
707 static const struct ieee80211_ops brcms_ops = {
708 .tx = brcms_ops_tx,
709 .start = brcms_ops_start,
710 .stop = brcms_ops_stop,
711 .add_interface = brcms_ops_add_interface,
712 .remove_interface = brcms_ops_remove_interface,
713 .config = brcms_ops_config,
714 .bss_info_changed = brcms_ops_bss_info_changed,
715 .configure_filter = brcms_ops_configure_filter,
716 .sw_scan_start = brcms_ops_sw_scan_start,
717 .sw_scan_complete = brcms_ops_sw_scan_complete,
718 .conf_tx = brcms_ops_conf_tx,
719 .sta_add = brcms_ops_sta_add,
720 .ampdu_action = brcms_ops_ampdu_action,
721 .rfkill_poll = brcms_ops_rfkill_poll,
722 .flush = brcms_ops_flush,
723 };
724
725 /*
726 * is called in brcms_bcma_probe() context, therefore no locking required.
727 */
brcms_set_hint(struct brcms_info * wl,char * abbrev)728 static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
729 {
730 return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
731 }
732
brcms_dpc(unsigned long data)733 void brcms_dpc(unsigned long data)
734 {
735 struct brcms_info *wl;
736
737 wl = (struct brcms_info *) data;
738
739 spin_lock_bh(&wl->lock);
740
741 /* call the common second level interrupt handler */
742 if (wl->pub->up) {
743 if (wl->resched) {
744 unsigned long flags;
745
746 spin_lock_irqsave(&wl->isr_lock, flags);
747 brcms_c_intrsupd(wl->wlc);
748 spin_unlock_irqrestore(&wl->isr_lock, flags);
749 }
750
751 wl->resched = brcms_c_dpc(wl->wlc, true);
752 }
753
754 /* brcms_c_dpc() may bring the driver down */
755 if (!wl->pub->up)
756 goto done;
757
758 /* re-schedule dpc */
759 if (wl->resched)
760 tasklet_schedule(&wl->tasklet);
761 else
762 /* re-enable interrupts */
763 brcms_intrson(wl);
764
765 done:
766 spin_unlock_bh(&wl->lock);
767 }
768
769 /*
770 * Precondition: Since this function is called in brcms_pci_probe() context,
771 * no locking is required.
772 */
brcms_request_fw(struct brcms_info * wl,struct pci_dev * pdev)773 static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev)
774 {
775 int status;
776 struct device *device = &pdev->dev;
777 char fw_name[100];
778 int i;
779
780 memset(&wl->fw, 0, sizeof(struct brcms_firmware));
781 for (i = 0; i < MAX_FW_IMAGES; i++) {
782 if (brcms_firmwares[i] == NULL)
783 break;
784 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
785 UCODE_LOADER_API_VER);
786 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
787 if (status) {
788 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
789 KBUILD_MODNAME, fw_name);
790 return status;
791 }
792 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
793 UCODE_LOADER_API_VER);
794 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
795 if (status) {
796 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
797 KBUILD_MODNAME, fw_name);
798 return status;
799 }
800 wl->fw.hdr_num_entries[i] =
801 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
802 }
803 wl->fw.fw_cnt = i;
804 return brcms_ucode_data_init(wl, &wl->ucode);
805 }
806
807 /*
808 * Precondition: Since this function is called in brcms_pci_probe() context,
809 * no locking is required.
810 */
brcms_release_fw(struct brcms_info * wl)811 static void brcms_release_fw(struct brcms_info *wl)
812 {
813 int i;
814 for (i = 0; i < MAX_FW_IMAGES; i++) {
815 release_firmware(wl->fw.fw_bin[i]);
816 release_firmware(wl->fw.fw_hdr[i]);
817 }
818 }
819
820 /**
821 * This function frees the WL per-device resources.
822 *
823 * This function frees resources owned by the WL device pointed to
824 * by the wl parameter.
825 *
826 * precondition: can both be called locked and unlocked
827 *
828 */
brcms_free(struct brcms_info * wl)829 static void brcms_free(struct brcms_info *wl)
830 {
831 struct brcms_timer *t, *next;
832
833 /* free ucode data */
834 if (wl->fw.fw_cnt)
835 brcms_ucode_data_free(&wl->ucode);
836 if (wl->irq)
837 free_irq(wl->irq, wl);
838
839 /* kill dpc */
840 tasklet_kill(&wl->tasklet);
841
842 if (wl->pub)
843 brcms_c_module_unregister(wl->pub, "linux", wl);
844
845 /* free common resources */
846 if (wl->wlc) {
847 brcms_c_detach(wl->wlc);
848 wl->wlc = NULL;
849 wl->pub = NULL;
850 }
851
852 /* virtual interface deletion is deferred so we cannot spinwait */
853
854 /* wait for all pending callbacks to complete */
855 while (atomic_read(&wl->callbacks) > 0)
856 schedule();
857
858 /* free timers */
859 for (t = wl->timers; t; t = next) {
860 next = t->next;
861 #ifdef DEBUG
862 kfree(t->name);
863 #endif
864 kfree(t);
865 }
866 }
867
868 /*
869 * called from both kernel as from this kernel module (error flow on attach)
870 * precondition: perimeter lock is not acquired.
871 */
brcms_remove(struct bcma_device * pdev)872 static void brcms_remove(struct bcma_device *pdev)
873 {
874 struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
875 struct brcms_info *wl = hw->priv;
876
877 if (wl->wlc) {
878 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
879 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
880 ieee80211_unregister_hw(hw);
881 }
882
883 brcms_free(wl);
884
885 bcma_set_drvdata(pdev, NULL);
886 ieee80211_free_hw(hw);
887 }
888
brcms_isr(int irq,void * dev_id)889 static irqreturn_t brcms_isr(int irq, void *dev_id)
890 {
891 struct brcms_info *wl;
892 bool ours, wantdpc;
893
894 wl = (struct brcms_info *) dev_id;
895
896 spin_lock(&wl->isr_lock);
897
898 /* call common first level interrupt handler */
899 ours = brcms_c_isr(wl->wlc, &wantdpc);
900 if (ours) {
901 /* if more to do... */
902 if (wantdpc) {
903
904 /* ...and call the second level interrupt handler */
905 /* schedule dpc */
906 tasklet_schedule(&wl->tasklet);
907 }
908 }
909
910 spin_unlock(&wl->isr_lock);
911
912 return IRQ_RETVAL(ours);
913 }
914
915 /*
916 * is called in brcms_pci_probe() context, therefore no locking required.
917 */
ieee_hw_rate_init(struct ieee80211_hw * hw)918 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
919 {
920 struct brcms_info *wl = hw->priv;
921 struct brcms_c_info *wlc = wl->wlc;
922 struct ieee80211_supported_band *band;
923 int has_5g = 0;
924 u16 phy_type;
925
926 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
927 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
928
929 phy_type = brcms_c_get_phy_type(wl->wlc, 0);
930 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
931 band = &wlc->bandstate[BAND_2G_INDEX]->band;
932 *band = brcms_band_2GHz_nphy_template;
933 if (phy_type == PHY_TYPE_LCN) {
934 /* Single stream */
935 band->ht_cap.mcs.rx_mask[1] = 0;
936 band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
937 }
938 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
939 } else {
940 return -EPERM;
941 }
942
943 /* Assume all bands use the same phy. True for 11n devices. */
944 if (wl->pub->_nbands > 1) {
945 has_5g++;
946 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
947 band = &wlc->bandstate[BAND_5G_INDEX]->band;
948 *band = brcms_band_5GHz_nphy_template;
949 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
950 } else {
951 return -EPERM;
952 }
953 }
954 return 0;
955 }
956
957 /*
958 * is called in brcms_pci_probe() context, therefore no locking required.
959 */
ieee_hw_init(struct ieee80211_hw * hw)960 static int ieee_hw_init(struct ieee80211_hw *hw)
961 {
962 hw->flags = IEEE80211_HW_SIGNAL_DBM
963 /* | IEEE80211_HW_CONNECTION_MONITOR What is this? */
964 | IEEE80211_HW_REPORTS_TX_ACK_STATUS
965 | IEEE80211_HW_AMPDU_AGGREGATION;
966
967 hw->extra_tx_headroom = brcms_c_get_header_len();
968 hw->queues = N_TX_QUEUES;
969 hw->max_rates = 2; /* Primary rate and 1 fallback rate */
970
971 /* channel change time is dependent on chip and band */
972 hw->channel_change_time = 7 * 1000;
973 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
974
975 hw->rate_control_algorithm = "minstrel_ht";
976
977 hw->sta_data_size = 0;
978 return ieee_hw_rate_init(hw);
979 }
980
981 /**
982 * attach to the WL device.
983 *
984 * Attach to the WL device identified by vendor and device parameters.
985 * regs is a host accessible memory address pointing to WL device registers.
986 *
987 * brcms_attach is not defined as static because in the case where no bus
988 * is defined, wl_attach will never be called, and thus, gcc will issue
989 * a warning that this function is defined but not used if we declare
990 * it as static.
991 *
992 *
993 * is called in brcms_bcma_probe() context, therefore no locking required.
994 */
brcms_attach(struct bcma_device * pdev)995 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
996 {
997 struct brcms_info *wl = NULL;
998 int unit, err;
999 struct ieee80211_hw *hw;
1000 u8 perm[ETH_ALEN];
1001
1002 unit = n_adapters_found;
1003 err = 0;
1004
1005 if (unit < 0)
1006 return NULL;
1007
1008 /* allocate private info */
1009 hw = bcma_get_drvdata(pdev);
1010 if (hw != NULL)
1011 wl = hw->priv;
1012 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1013 return NULL;
1014 wl->wiphy = hw->wiphy;
1015
1016 atomic_set(&wl->callbacks, 0);
1017
1018 /* setup the bottom half handler */
1019 tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1020
1021 spin_lock_init(&wl->lock);
1022 spin_lock_init(&wl->isr_lock);
1023
1024 /* prepare ucode */
1025 if (brcms_request_fw(wl, pdev->bus->host_pci) < 0) {
1026 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1027 "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1028 brcms_release_fw(wl);
1029 brcms_remove(pdev);
1030 return NULL;
1031 }
1032
1033 /* common load-time initialization */
1034 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1035 brcms_release_fw(wl);
1036 if (!wl->wlc) {
1037 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1038 KBUILD_MODNAME, err);
1039 goto fail;
1040 }
1041 wl->pub = brcms_c_pub(wl->wlc);
1042
1043 wl->pub->ieee_hw = hw;
1044
1045 /* register our interrupt handler */
1046 if (request_irq(pdev->bus->host_pci->irq, brcms_isr,
1047 IRQF_SHARED, KBUILD_MODNAME, wl)) {
1048 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1049 goto fail;
1050 }
1051 wl->irq = pdev->bus->host_pci->irq;
1052
1053 /* register module */
1054 brcms_c_module_register(wl->pub, "linux", wl, NULL);
1055
1056 if (ieee_hw_init(hw)) {
1057 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1058 __func__);
1059 goto fail;
1060 }
1061
1062 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1063 if (WARN_ON(!is_valid_ether_addr(perm)))
1064 goto fail;
1065 SET_IEEE80211_PERM_ADDR(hw, perm);
1066
1067 err = ieee80211_register_hw(hw);
1068 if (err)
1069 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1070 "%d\n", __func__, err);
1071
1072 if (wl->pub->srom_ccode[0])
1073 err = brcms_set_hint(wl, wl->pub->srom_ccode);
1074 else
1075 err = brcms_set_hint(wl, "US");
1076 if (err)
1077 wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
1078 __func__, err);
1079
1080 n_adapters_found++;
1081 return wl;
1082
1083 fail:
1084 brcms_free(wl);
1085 return NULL;
1086 }
1087
1088
1089
1090 /**
1091 * determines if a device is a WL device, and if so, attaches it.
1092 *
1093 * This function determines if a device pointed to by pdev is a WL device,
1094 * and if so, performs a brcms_attach() on it.
1095 *
1096 * Perimeter lock is initialized in the course of this function.
1097 */
brcms_bcma_probe(struct bcma_device * pdev)1098 static int __devinit brcms_bcma_probe(struct bcma_device *pdev)
1099 {
1100 struct brcms_info *wl;
1101 struct ieee80211_hw *hw;
1102
1103 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1104 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1105 pdev->bus->host_pci->irq);
1106
1107 if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1108 (pdev->id.id != BCMA_CORE_80211))
1109 return -ENODEV;
1110
1111 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1112 if (!hw) {
1113 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1114 return -ENOMEM;
1115 }
1116
1117 SET_IEEE80211_DEV(hw, &pdev->dev);
1118
1119 bcma_set_drvdata(pdev, hw);
1120
1121 memset(hw->priv, 0, sizeof(*wl));
1122
1123 wl = brcms_attach(pdev);
1124 if (!wl) {
1125 pr_err("%s: brcms_attach failed!\n", __func__);
1126 return -ENODEV;
1127 }
1128 return 0;
1129 }
1130
brcms_suspend(struct bcma_device * pdev)1131 static int brcms_suspend(struct bcma_device *pdev)
1132 {
1133 struct brcms_info *wl;
1134 struct ieee80211_hw *hw;
1135
1136 hw = bcma_get_drvdata(pdev);
1137 wl = hw->priv;
1138 if (!wl) {
1139 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1140 __func__);
1141 return -ENODEV;
1142 }
1143
1144 /* only need to flag hw is down for proper resume */
1145 spin_lock_bh(&wl->lock);
1146 wl->pub->hw_up = false;
1147 spin_unlock_bh(&wl->lock);
1148
1149 pr_debug("brcms_suspend ok\n");
1150
1151 return 0;
1152 }
1153
brcms_resume(struct bcma_device * pdev)1154 static int brcms_resume(struct bcma_device *pdev)
1155 {
1156 pr_debug("brcms_resume ok\n");
1157 return 0;
1158 }
1159
1160 static struct bcma_driver brcms_bcma_driver = {
1161 .name = KBUILD_MODNAME,
1162 .probe = brcms_bcma_probe,
1163 .suspend = brcms_suspend,
1164 .resume = brcms_resume,
1165 .remove = __devexit_p(brcms_remove),
1166 .id_table = brcms_coreid_table,
1167 };
1168
1169 /**
1170 * This is the main entry point for the brcmsmac driver.
1171 *
1172 * This function is scheduled upon module initialization and
1173 * does the driver registration, which result in brcms_bcma_probe()
1174 * call resulting in the driver bringup.
1175 */
brcms_driver_init(struct work_struct * work)1176 static void brcms_driver_init(struct work_struct *work)
1177 {
1178 int error;
1179
1180 error = bcma_driver_register(&brcms_bcma_driver);
1181 if (error)
1182 pr_err("%s: register returned %d\n", __func__, error);
1183 }
1184
1185 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1186
brcms_module_init(void)1187 static int __init brcms_module_init(void)
1188 {
1189 #ifdef DEBUG
1190 if (msglevel != 0xdeadbeef)
1191 brcm_msg_level = msglevel;
1192 #endif
1193 if (!schedule_work(&brcms_driver_work))
1194 return -EBUSY;
1195
1196 return 0;
1197 }
1198
1199 /**
1200 * This function unloads the brcmsmac driver from the system.
1201 *
1202 * This function unconditionally unloads the brcmsmac driver module from the
1203 * system.
1204 *
1205 */
brcms_module_exit(void)1206 static void __exit brcms_module_exit(void)
1207 {
1208 cancel_work_sync(&brcms_driver_work);
1209 bcma_driver_unregister(&brcms_bcma_driver);
1210 }
1211
1212 module_init(brcms_module_init);
1213 module_exit(brcms_module_exit);
1214
1215 /*
1216 * precondition: perimeter lock has been acquired
1217 */
brcms_txflowcontrol(struct brcms_info * wl,struct brcms_if * wlif,bool state,int prio)1218 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1219 bool state, int prio)
1220 {
1221 wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1222 }
1223
1224 /*
1225 * precondition: perimeter lock has been acquired
1226 */
brcms_init(struct brcms_info * wl)1227 void brcms_init(struct brcms_info *wl)
1228 {
1229 BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1230 brcms_reset(wl);
1231 brcms_c_init(wl->wlc, wl->mute_tx);
1232 }
1233
1234 /*
1235 * precondition: perimeter lock has been acquired
1236 */
brcms_reset(struct brcms_info * wl)1237 uint brcms_reset(struct brcms_info *wl)
1238 {
1239 BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1240 brcms_c_reset(wl->wlc);
1241
1242 /* dpc will not be rescheduled */
1243 wl->resched = false;
1244
1245 return 0;
1246 }
1247
brcms_fatal_error(struct brcms_info * wl)1248 void brcms_fatal_error(struct brcms_info *wl)
1249 {
1250 wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1251 wl->wlc->pub->unit);
1252 brcms_reset(wl);
1253 ieee80211_restart_hw(wl->pub->ieee_hw);
1254 }
1255
1256 /*
1257 * These are interrupt on/off entry points. Disable interrupts
1258 * during interrupt state transition.
1259 */
brcms_intrson(struct brcms_info * wl)1260 void brcms_intrson(struct brcms_info *wl)
1261 {
1262 unsigned long flags;
1263
1264 spin_lock_irqsave(&wl->isr_lock, flags);
1265 brcms_c_intrson(wl->wlc);
1266 spin_unlock_irqrestore(&wl->isr_lock, flags);
1267 }
1268
brcms_intrsoff(struct brcms_info * wl)1269 u32 brcms_intrsoff(struct brcms_info *wl)
1270 {
1271 unsigned long flags;
1272 u32 status;
1273
1274 spin_lock_irqsave(&wl->isr_lock, flags);
1275 status = brcms_c_intrsoff(wl->wlc);
1276 spin_unlock_irqrestore(&wl->isr_lock, flags);
1277 return status;
1278 }
1279
brcms_intrsrestore(struct brcms_info * wl,u32 macintmask)1280 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1281 {
1282 unsigned long flags;
1283
1284 spin_lock_irqsave(&wl->isr_lock, flags);
1285 brcms_c_intrsrestore(wl->wlc, macintmask);
1286 spin_unlock_irqrestore(&wl->isr_lock, flags);
1287 }
1288
1289 /*
1290 * precondition: perimeter lock has been acquired
1291 */
brcms_up(struct brcms_info * wl)1292 int brcms_up(struct brcms_info *wl)
1293 {
1294 int error = 0;
1295
1296 if (wl->pub->up)
1297 return 0;
1298
1299 error = brcms_c_up(wl->wlc);
1300
1301 return error;
1302 }
1303
1304 /*
1305 * precondition: perimeter lock has been acquired
1306 */
brcms_down(struct brcms_info * wl)1307 void brcms_down(struct brcms_info *wl)
1308 {
1309 uint callbacks, ret_val = 0;
1310
1311 /* call common down function */
1312 ret_val = brcms_c_down(wl->wlc);
1313 callbacks = atomic_read(&wl->callbacks) - ret_val;
1314
1315 /* wait for down callbacks to complete */
1316 spin_unlock_bh(&wl->lock);
1317
1318 /* For HIGH_only driver, it's important to actually schedule other work,
1319 * not just spin wait since everything runs at schedule level
1320 */
1321 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1322
1323 spin_lock_bh(&wl->lock);
1324 }
1325
1326 /*
1327 * precondition: perimeter lock is not acquired
1328 */
_brcms_timer(struct work_struct * work)1329 static void _brcms_timer(struct work_struct *work)
1330 {
1331 struct brcms_timer *t = container_of(work, struct brcms_timer,
1332 dly_wrk.work);
1333
1334 spin_lock_bh(&t->wl->lock);
1335
1336 if (t->set) {
1337 if (t->periodic) {
1338 atomic_inc(&t->wl->callbacks);
1339 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1340 &t->dly_wrk,
1341 msecs_to_jiffies(t->ms));
1342 } else {
1343 t->set = false;
1344 }
1345
1346 t->fn(t->arg);
1347 }
1348
1349 atomic_dec(&t->wl->callbacks);
1350
1351 spin_unlock_bh(&t->wl->lock);
1352 }
1353
1354 /*
1355 * Adds a timer to the list. Caller supplies a timer function.
1356 * Is called from wlc.
1357 *
1358 * precondition: perimeter lock has been acquired
1359 */
brcms_init_timer(struct brcms_info * wl,void (* fn)(void * arg),void * arg,const char * name)1360 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1361 void (*fn) (void *arg),
1362 void *arg, const char *name)
1363 {
1364 struct brcms_timer *t;
1365
1366 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1367 if (!t)
1368 return NULL;
1369
1370 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1371 t->wl = wl;
1372 t->fn = fn;
1373 t->arg = arg;
1374 t->next = wl->timers;
1375 wl->timers = t;
1376
1377 #ifdef DEBUG
1378 t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1379 if (t->name)
1380 strcpy(t->name, name);
1381 #endif
1382
1383 return t;
1384 }
1385
1386 /*
1387 * adds only the kernel timer since it's going to be more accurate
1388 * as well as it's easier to make it periodic
1389 *
1390 * precondition: perimeter lock has been acquired
1391 */
brcms_add_timer(struct brcms_timer * t,uint ms,int periodic)1392 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1393 {
1394 struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1395
1396 #ifdef DEBUG
1397 if (t->set)
1398 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1399 __func__, t->name, periodic);
1400 #endif
1401 t->ms = ms;
1402 t->periodic = (bool) periodic;
1403 if (!t->set) {
1404 t->set = true;
1405 atomic_inc(&t->wl->callbacks);
1406 }
1407
1408 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1409 }
1410
1411 /*
1412 * return true if timer successfully deleted, false if still pending
1413 *
1414 * precondition: perimeter lock has been acquired
1415 */
brcms_del_timer(struct brcms_timer * t)1416 bool brcms_del_timer(struct brcms_timer *t)
1417 {
1418 if (t->set) {
1419 t->set = false;
1420 if (!cancel_delayed_work(&t->dly_wrk))
1421 return false;
1422
1423 atomic_dec(&t->wl->callbacks);
1424 }
1425
1426 return true;
1427 }
1428
1429 /*
1430 * precondition: perimeter lock has been acquired
1431 */
brcms_free_timer(struct brcms_timer * t)1432 void brcms_free_timer(struct brcms_timer *t)
1433 {
1434 struct brcms_info *wl = t->wl;
1435 struct brcms_timer *tmp;
1436
1437 /* delete the timer in case it is active */
1438 brcms_del_timer(t);
1439
1440 if (wl->timers == t) {
1441 wl->timers = wl->timers->next;
1442 #ifdef DEBUG
1443 kfree(t->name);
1444 #endif
1445 kfree(t);
1446 return;
1447
1448 }
1449
1450 tmp = wl->timers;
1451 while (tmp) {
1452 if (tmp->next == t) {
1453 tmp->next = t->next;
1454 #ifdef DEBUG
1455 kfree(t->name);
1456 #endif
1457 kfree(t);
1458 return;
1459 }
1460 tmp = tmp->next;
1461 }
1462
1463 }
1464
1465 /*
1466 * precondition: perimeter lock has been acquired
1467 */
brcms_ucode_init_buf(struct brcms_info * wl,void ** pbuf,u32 idx)1468 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1469 {
1470 int i, entry;
1471 const u8 *pdata;
1472 struct firmware_hdr *hdr;
1473 for (i = 0; i < wl->fw.fw_cnt; i++) {
1474 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1475 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1476 entry++, hdr++) {
1477 u32 len = le32_to_cpu(hdr->len);
1478 if (le32_to_cpu(hdr->idx) == idx) {
1479 pdata = wl->fw.fw_bin[i]->data +
1480 le32_to_cpu(hdr->offset);
1481 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1482 if (*pbuf == NULL)
1483 goto fail;
1484
1485 return 0;
1486 }
1487 }
1488 }
1489 wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1490 idx);
1491 *pbuf = NULL;
1492 fail:
1493 return -ENODATA;
1494 }
1495
1496 /*
1497 * Precondition: Since this function is called in brcms_bcma_probe() context,
1498 * no locking is required.
1499 */
brcms_ucode_init_uint(struct brcms_info * wl,size_t * n_bytes,u32 idx)1500 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1501 {
1502 int i, entry;
1503 const u8 *pdata;
1504 struct firmware_hdr *hdr;
1505 for (i = 0; i < wl->fw.fw_cnt; i++) {
1506 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1507 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1508 entry++, hdr++) {
1509 if (le32_to_cpu(hdr->idx) == idx) {
1510 pdata = wl->fw.fw_bin[i]->data +
1511 le32_to_cpu(hdr->offset);
1512 if (le32_to_cpu(hdr->len) != 4) {
1513 wiphy_err(wl->wiphy,
1514 "ERROR: fw hdr len\n");
1515 return -ENOMSG;
1516 }
1517 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1518 return 0;
1519 }
1520 }
1521 }
1522 wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1523 return -ENOMSG;
1524 }
1525
1526 /*
1527 * precondition: can both be called locked and unlocked
1528 */
brcms_ucode_free_buf(void * p)1529 void brcms_ucode_free_buf(void *p)
1530 {
1531 kfree(p);
1532 }
1533
1534 /*
1535 * checks validity of all firmware images loaded from user space
1536 *
1537 * Precondition: Since this function is called in brcms_bcma_probe() context,
1538 * no locking is required.
1539 */
brcms_check_firmwares(struct brcms_info * wl)1540 int brcms_check_firmwares(struct brcms_info *wl)
1541 {
1542 int i;
1543 int entry;
1544 int rc = 0;
1545 const struct firmware *fw;
1546 const struct firmware *fw_hdr;
1547 struct firmware_hdr *ucode_hdr;
1548 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1549 fw = wl->fw.fw_bin[i];
1550 fw_hdr = wl->fw.fw_hdr[i];
1551 if (fw == NULL && fw_hdr == NULL) {
1552 break;
1553 } else if (fw == NULL || fw_hdr == NULL) {
1554 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1555 __func__);
1556 rc = -EBADF;
1557 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1558 wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1559 "size %zu/%zu\n", __func__, fw_hdr->size,
1560 sizeof(struct firmware_hdr));
1561 rc = -EBADF;
1562 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1563 wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1564 "%zu\n", __func__, fw->size);
1565 rc = -EBADF;
1566 } else {
1567 /* check if ucode section overruns firmware image */
1568 ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1569 for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1570 !rc; entry++, ucode_hdr++) {
1571 if (le32_to_cpu(ucode_hdr->offset) +
1572 le32_to_cpu(ucode_hdr->len) >
1573 fw->size) {
1574 wiphy_err(wl->wiphy,
1575 "%s: conflicting bin/hdr\n",
1576 __func__);
1577 rc = -EBADF;
1578 }
1579 }
1580 }
1581 }
1582 if (rc == 0 && wl->fw.fw_cnt != i) {
1583 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1584 wl->fw.fw_cnt);
1585 rc = -EBADF;
1586 }
1587 return rc;
1588 }
1589
1590 /*
1591 * precondition: perimeter lock has been acquired
1592 */
brcms_rfkill_set_hw_state(struct brcms_info * wl)1593 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1594 {
1595 bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1596
1597 spin_unlock_bh(&wl->lock);
1598 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1599 if (blocked)
1600 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1601 spin_lock_bh(&wl->lock);
1602 return blocked;
1603 }
1604
1605 /*
1606 * precondition: perimeter lock has been acquired
1607 */
brcms_msleep(struct brcms_info * wl,uint ms)1608 void brcms_msleep(struct brcms_info *wl, uint ms)
1609 {
1610 spin_unlock_bh(&wl->lock);
1611 msleep(ms);
1612 spin_lock_bh(&wl->lock);
1613 }
1614