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