]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
projects / mirror_ubuntu-artful-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'fixes_for-3.6' into fixes
[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / brcm80211 / brcmsmac / mac80211_if.c
1 /*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #define __UNDEF_NO_VERSION__
18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19
20 #include <linux/etherdevice.h>
21 #include <linux/sched.h>
22 #include <linux/firmware.h>
23 #include <linux/interrupt.h>
24 #include <linux/module.h>
25 #include <linux/bcma/bcma.h>
26 #include <net/mac80211.h>
27 #include <defs.h>
28 #include "phy/phy_int.h"
29 #include "d11.h"
30 #include "channel.h"
31 #include "scb.h"
32 #include "pub.h"
33 #include "ucode_loader.h"
34 #include "mac80211_if.h"
35 #include "main.h"
36
37 #define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */
38
39 /* Flags we support */
40 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
41 FIF_ALLMULTI | \
42 FIF_FCSFAIL | \
43 FIF_CONTROL | \
44 FIF_OTHER_BSS | \
45 FIF_BCN_PRBRESP_PROMISC | \
46 FIF_PSPOLL)
47
48 #define CHAN2GHZ(channel, freqency, chflags) { \
49 .band = IEEE80211_BAND_2GHZ, \
50 .center_freq = (freqency), \
51 .hw_value = (channel), \
52 .flags = chflags, \
53 .max_antenna_gain = 0, \
54 .max_power = 19, \
55 }
56
57 #define CHAN5GHZ(channel, chflags) { \
58 .band = IEEE80211_BAND_5GHZ, \
59 .center_freq = 5000 + 5*(channel), \
60 .hw_value = (channel), \
61 .flags = chflags, \
62 .max_antenna_gain = 0, \
63 .max_power = 21, \
64 }
65
66 #define RATE(rate100m, _flags) { \
67 .bitrate = (rate100m), \
68 .flags = (_flags), \
69 .hw_value = (rate100m / 5), \
70 }
71
72 struct firmware_hdr {
73 __le32 offset;
74 __le32 len;
75 __le32 idx;
76 };
77
78 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
79 "brcm/bcm43xx",
80 NULL
81 };
82
83 static int n_adapters_found;
84
85 MODULE_AUTHOR("Broadcom Corporation");
86 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
87 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
88 MODULE_LICENSE("Dual BSD/GPL");
89
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 DEBUG
100 static int msglevel = 0xdeadbeef;
101 module_param(msglevel, int, 0);
102 #endif /* DEBUG */
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 */
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
267 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
268 {
269 struct brcms_info *wl = hw->priv;
270 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
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 tx_info->rate_driver_data[0] = tx_info->control.sta;
280 done:
281 spin_unlock_bh(&wl->lock);
282 }
283
284 static int brcms_ops_start(struct ieee80211_hw *hw)
285 {
286 struct brcms_info *wl = hw->priv;
287 bool blocked;
288 int err;
289
290 ieee80211_wake_queues(hw);
291 spin_lock_bh(&wl->lock);
292 blocked = brcms_rfkill_set_hw_state(wl);
293 spin_unlock_bh(&wl->lock);
294 if (!blocked)
295 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
296
297 spin_lock_bh(&wl->lock);
298 /* avoid acknowledging frames before a non-monitor device is added */
299 wl->mute_tx = true;
300
301 if (!wl->pub->up)
302 err = brcms_up(wl);
303 else
304 err = -ENODEV;
305 spin_unlock_bh(&wl->lock);
306
307 if (err != 0)
308 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
309 err);
310 return err;
311 }
312
313 static void brcms_ops_stop(struct ieee80211_hw *hw)
314 {
315 struct brcms_info *wl = hw->priv;
316 int status;
317
318 ieee80211_stop_queues(hw);
319
320 if (wl->wlc == NULL)
321 return;
322
323 spin_lock_bh(&wl->lock);
324 status = brcms_c_chipmatch(wl->wlc->hw->d11core);
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
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
357 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
358 {
359 }
360
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
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
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
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
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
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
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
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
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
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 void brcms_dpc(unsigned long data)
726 {
727 struct brcms_info *wl;
728
729 wl = (struct brcms_info *) data;
730
731 spin_lock_bh(&wl->lock);
732
733 /* call the common second level interrupt handler */
734 if (wl->pub->up) {
735 if (wl->resched) {
736 unsigned long flags;
737
738 spin_lock_irqsave(&wl->isr_lock, flags);
739 brcms_c_intrsupd(wl->wlc);
740 spin_unlock_irqrestore(&wl->isr_lock, flags);
741 }
742
743 wl->resched = brcms_c_dpc(wl->wlc, true);
744 }
745
746 /* brcms_c_dpc() may bring the driver down */
747 if (!wl->pub->up)
748 goto done;
749
750 /* re-schedule dpc */
751 if (wl->resched)
752 tasklet_schedule(&wl->tasklet);
753 else
754 /* re-enable interrupts */
755 brcms_intrson(wl);
756
757 done:
758 spin_unlock_bh(&wl->lock);
759 }
760
761 /*
762 * Precondition: Since this function is called in brcms_pci_probe() context,
763 * no locking is required.
764 */
765 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
766 {
767 int status;
768 struct device *device = &pdev->dev;
769 char fw_name[100];
770 int i;
771
772 memset(&wl->fw, 0, sizeof(struct brcms_firmware));
773 for (i = 0; i < MAX_FW_IMAGES; i++) {
774 if (brcms_firmwares[i] == NULL)
775 break;
776 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
777 UCODE_LOADER_API_VER);
778 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
779 if (status) {
780 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
781 KBUILD_MODNAME, fw_name);
782 return status;
783 }
784 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
785 UCODE_LOADER_API_VER);
786 status = request_firmware(&wl->fw.fw_hdr[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 wl->fw.hdr_num_entries[i] =
793 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
794 }
795 wl->fw.fw_cnt = i;
796 return brcms_ucode_data_init(wl, &wl->ucode);
797 }
798
799 /*
800 * Precondition: Since this function is called in brcms_pci_probe() context,
801 * no locking is required.
802 */
803 static void brcms_release_fw(struct brcms_info *wl)
804 {
805 int i;
806 for (i = 0; i < MAX_FW_IMAGES; i++) {
807 release_firmware(wl->fw.fw_bin[i]);
808 release_firmware(wl->fw.fw_hdr[i]);
809 }
810 }
811
812 /**
813 * This function frees the WL per-device resources.
814 *
815 * This function frees resources owned by the WL device pointed to
816 * by the wl parameter.
817 *
818 * precondition: can both be called locked and unlocked
819 *
820 */
821 static void brcms_free(struct brcms_info *wl)
822 {
823 struct brcms_timer *t, *next;
824
825 /* free ucode data */
826 if (wl->fw.fw_cnt)
827 brcms_ucode_data_free(&wl->ucode);
828 if (wl->irq)
829 free_irq(wl->irq, wl);
830
831 /* kill dpc */
832 tasklet_kill(&wl->tasklet);
833
834 if (wl->pub)
835 brcms_c_module_unregister(wl->pub, "linux", wl);
836
837 /* free common resources */
838 if (wl->wlc) {
839 brcms_c_detach(wl->wlc);
840 wl->wlc = NULL;
841 wl->pub = NULL;
842 }
843
844 /* virtual interface deletion is deferred so we cannot spinwait */
845
846 /* wait for all pending callbacks to complete */
847 while (atomic_read(&wl->callbacks) > 0)
848 schedule();
849
850 /* free timers */
851 for (t = wl->timers; t; t = next) {
852 next = t->next;
853 #ifdef DEBUG
854 kfree(t->name);
855 #endif
856 kfree(t);
857 }
858 }
859
860 /*
861 * called from both kernel as from this kernel module (error flow on attach)
862 * precondition: perimeter lock is not acquired.
863 */
864 static void brcms_remove(struct bcma_device *pdev)
865 {
866 struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
867 struct brcms_info *wl = hw->priv;
868
869 if (wl->wlc) {
870 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
871 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
872 ieee80211_unregister_hw(hw);
873 }
874
875 brcms_free(wl);
876
877 bcma_set_drvdata(pdev, NULL);
878 ieee80211_free_hw(hw);
879 }
880
881 static irqreturn_t brcms_isr(int irq, void *dev_id)
882 {
883 struct brcms_info *wl;
884 bool ours, wantdpc;
885
886 wl = (struct brcms_info *) dev_id;
887
888 spin_lock(&wl->isr_lock);
889
890 /* call common first level interrupt handler */
891 ours = brcms_c_isr(wl->wlc, &wantdpc);
892 if (ours) {
893 /* if more to do... */
894 if (wantdpc) {
895
896 /* ...and call the second level interrupt handler */
897 /* schedule dpc */
898 tasklet_schedule(&wl->tasklet);
899 }
900 }
901
902 spin_unlock(&wl->isr_lock);
903
904 return IRQ_RETVAL(ours);
905 }
906
907 /*
908 * is called in brcms_pci_probe() context, therefore no locking required.
909 */
910 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
911 {
912 struct brcms_info *wl = hw->priv;
913 struct brcms_c_info *wlc = wl->wlc;
914 struct ieee80211_supported_band *band;
915 int has_5g = 0;
916 u16 phy_type;
917
918 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
919 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
920
921 phy_type = brcms_c_get_phy_type(wl->wlc, 0);
922 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
923 band = &wlc->bandstate[BAND_2G_INDEX]->band;
924 *band = brcms_band_2GHz_nphy_template;
925 if (phy_type == PHY_TYPE_LCN) {
926 /* Single stream */
927 band->ht_cap.mcs.rx_mask[1] = 0;
928 band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
929 }
930 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
931 } else {
932 return -EPERM;
933 }
934
935 /* Assume all bands use the same phy. True for 11n devices. */
936 if (wl->pub->_nbands > 1) {
937 has_5g++;
938 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
939 band = &wlc->bandstate[BAND_5G_INDEX]->band;
940 *band = brcms_band_5GHz_nphy_template;
941 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
942 } else {
943 return -EPERM;
944 }
945 }
946 return 0;
947 }
948
949 /*
950 * is called in brcms_pci_probe() context, therefore no locking required.
951 */
952 static int ieee_hw_init(struct ieee80211_hw *hw)
953 {
954 hw->flags = IEEE80211_HW_SIGNAL_DBM
955 /* | IEEE80211_HW_CONNECTION_MONITOR What is this? */
956 | IEEE80211_HW_REPORTS_TX_ACK_STATUS
957 | IEEE80211_HW_AMPDU_AGGREGATION;
958
959 hw->extra_tx_headroom = brcms_c_get_header_len();
960 hw->queues = N_TX_QUEUES;
961 hw->max_rates = 2; /* Primary rate and 1 fallback rate */
962
963 /* channel change time is dependent on chip and band */
964 hw->channel_change_time = 7 * 1000;
965 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
966
967 hw->rate_control_algorithm = "minstrel_ht";
968
969 hw->sta_data_size = 0;
970 return ieee_hw_rate_init(hw);
971 }
972
973 /**
974 * attach to the WL device.
975 *
976 * Attach to the WL device identified by vendor and device parameters.
977 * regs is a host accessible memory address pointing to WL device registers.
978 *
979 * brcms_attach is not defined as static because in the case where no bus
980 * is defined, wl_attach will never be called, and thus, gcc will issue
981 * a warning that this function is defined but not used if we declare
982 * it as static.
983 *
984 *
985 * is called in brcms_bcma_probe() context, therefore no locking required.
986 */
987 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
988 {
989 struct brcms_info *wl = NULL;
990 int unit, err;
991 struct ieee80211_hw *hw;
992 u8 perm[ETH_ALEN];
993
994 unit = n_adapters_found;
995 err = 0;
996
997 if (unit < 0)
998 return NULL;
999
1000 /* allocate private info */
1001 hw = bcma_get_drvdata(pdev);
1002 if (hw != NULL)
1003 wl = hw->priv;
1004 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1005 return NULL;
1006 wl->wiphy = hw->wiphy;
1007
1008 atomic_set(&wl->callbacks, 0);
1009
1010 /* setup the bottom half handler */
1011 tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1012
1013 spin_lock_init(&wl->lock);
1014 spin_lock_init(&wl->isr_lock);
1015
1016 /* prepare ucode */
1017 if (brcms_request_fw(wl, pdev) < 0) {
1018 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1019 "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1020 brcms_release_fw(wl);
1021 brcms_remove(pdev);
1022 return NULL;
1023 }
1024
1025 /* common load-time initialization */
1026 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1027 brcms_release_fw(wl);
1028 if (!wl->wlc) {
1029 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1030 KBUILD_MODNAME, err);
1031 goto fail;
1032 }
1033 wl->pub = brcms_c_pub(wl->wlc);
1034
1035 wl->pub->ieee_hw = hw;
1036
1037 /* register our interrupt handler */
1038 if (request_irq(pdev->irq, brcms_isr,
1039 IRQF_SHARED, KBUILD_MODNAME, wl)) {
1040 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1041 goto fail;
1042 }
1043 wl->irq = pdev->irq;
1044
1045 /* register module */
1046 brcms_c_module_register(wl->pub, "linux", wl, NULL);
1047
1048 if (ieee_hw_init(hw)) {
1049 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1050 __func__);
1051 goto fail;
1052 }
1053
1054 brcms_c_regd_init(wl->wlc);
1055
1056 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1057 if (WARN_ON(!is_valid_ether_addr(perm)))
1058 goto fail;
1059 SET_IEEE80211_PERM_ADDR(hw, perm);
1060
1061 err = ieee80211_register_hw(hw);
1062 if (err)
1063 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1064 "%d\n", __func__, err);
1065
1066 if (wl->pub->srom_ccode[0] &&
1067 regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1068 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1069
1070 n_adapters_found++;
1071 return wl;
1072
1073 fail:
1074 brcms_free(wl);
1075 return NULL;
1076 }
1077
1078
1079
1080 /**
1081 * determines if a device is a WL device, and if so, attaches it.
1082 *
1083 * This function determines if a device pointed to by pdev is a WL device,
1084 * and if so, performs a brcms_attach() on it.
1085 *
1086 * Perimeter lock is initialized in the course of this function.
1087 */
1088 static int __devinit brcms_bcma_probe(struct bcma_device *pdev)
1089 {
1090 struct brcms_info *wl;
1091 struct ieee80211_hw *hw;
1092
1093 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1094 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1095 pdev->irq);
1096
1097 if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1098 (pdev->id.id != BCMA_CORE_80211))
1099 return -ENODEV;
1100
1101 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1102 if (!hw) {
1103 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1104 return -ENOMEM;
1105 }
1106
1107 SET_IEEE80211_DEV(hw, &pdev->dev);
1108
1109 bcma_set_drvdata(pdev, hw);
1110
1111 memset(hw->priv, 0, sizeof(*wl));
1112
1113 wl = brcms_attach(pdev);
1114 if (!wl) {
1115 pr_err("%s: brcms_attach failed!\n", __func__);
1116 return -ENODEV;
1117 }
1118 return 0;
1119 }
1120
1121 static int brcms_suspend(struct bcma_device *pdev)
1122 {
1123 struct brcms_info *wl;
1124 struct ieee80211_hw *hw;
1125
1126 hw = bcma_get_drvdata(pdev);
1127 wl = hw->priv;
1128 if (!wl) {
1129 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1130 __func__);
1131 return -ENODEV;
1132 }
1133
1134 /* only need to flag hw is down for proper resume */
1135 spin_lock_bh(&wl->lock);
1136 wl->pub->hw_up = false;
1137 spin_unlock_bh(&wl->lock);
1138
1139 pr_debug("brcms_suspend ok\n");
1140
1141 return 0;
1142 }
1143
1144 static int brcms_resume(struct bcma_device *pdev)
1145 {
1146 pr_debug("brcms_resume ok\n");
1147 return 0;
1148 }
1149
1150 static struct bcma_driver brcms_bcma_driver = {
1151 .name = KBUILD_MODNAME,
1152 .probe = brcms_bcma_probe,
1153 .suspend = brcms_suspend,
1154 .resume = brcms_resume,
1155 .remove = __devexit_p(brcms_remove),
1156 .id_table = brcms_coreid_table,
1157 };
1158
1159 /**
1160 * This is the main entry point for the brcmsmac driver.
1161 *
1162 * This function is scheduled upon module initialization and
1163 * does the driver registration, which result in brcms_bcma_probe()
1164 * call resulting in the driver bringup.
1165 */
1166 static void brcms_driver_init(struct work_struct *work)
1167 {
1168 int error;
1169
1170 error = bcma_driver_register(&brcms_bcma_driver);
1171 if (error)
1172 pr_err("%s: register returned %d\n", __func__, error);
1173 }
1174
1175 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1176
1177 static int __init brcms_module_init(void)
1178 {
1179 #ifdef DEBUG
1180 if (msglevel != 0xdeadbeef)
1181 brcm_msg_level = msglevel;
1182 #endif
1183 if (!schedule_work(&brcms_driver_work))
1184 return -EBUSY;
1185
1186 return 0;
1187 }
1188
1189 /**
1190 * This function unloads the brcmsmac driver from the system.
1191 *
1192 * This function unconditionally unloads the brcmsmac driver module from the
1193 * system.
1194 *
1195 */
1196 static void __exit brcms_module_exit(void)
1197 {
1198 cancel_work_sync(&brcms_driver_work);
1199 bcma_driver_unregister(&brcms_bcma_driver);
1200 }
1201
1202 module_init(brcms_module_init);
1203 module_exit(brcms_module_exit);
1204
1205 /*
1206 * precondition: perimeter lock has been acquired
1207 */
1208 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1209 bool state, int prio)
1210 {
1211 wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1212 }
1213
1214 /*
1215 * precondition: perimeter lock has been acquired
1216 */
1217 void brcms_init(struct brcms_info *wl)
1218 {
1219 BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1220 brcms_reset(wl);
1221 brcms_c_init(wl->wlc, wl->mute_tx);
1222 }
1223
1224 /*
1225 * precondition: perimeter lock has been acquired
1226 */
1227 uint brcms_reset(struct brcms_info *wl)
1228 {
1229 BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1230 brcms_c_reset(wl->wlc);
1231
1232 /* dpc will not be rescheduled */
1233 wl->resched = false;
1234
1235 return 0;
1236 }
1237
1238 void brcms_fatal_error(struct brcms_info *wl)
1239 {
1240 wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1241 wl->wlc->pub->unit);
1242 brcms_reset(wl);
1243 ieee80211_restart_hw(wl->pub->ieee_hw);
1244 }
1245
1246 /*
1247 * These are interrupt on/off entry points. Disable interrupts
1248 * during interrupt state transition.
1249 */
1250 void brcms_intrson(struct brcms_info *wl)
1251 {
1252 unsigned long flags;
1253
1254 spin_lock_irqsave(&wl->isr_lock, flags);
1255 brcms_c_intrson(wl->wlc);
1256 spin_unlock_irqrestore(&wl->isr_lock, flags);
1257 }
1258
1259 u32 brcms_intrsoff(struct brcms_info *wl)
1260 {
1261 unsigned long flags;
1262 u32 status;
1263
1264 spin_lock_irqsave(&wl->isr_lock, flags);
1265 status = brcms_c_intrsoff(wl->wlc);
1266 spin_unlock_irqrestore(&wl->isr_lock, flags);
1267 return status;
1268 }
1269
1270 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1271 {
1272 unsigned long flags;
1273
1274 spin_lock_irqsave(&wl->isr_lock, flags);
1275 brcms_c_intrsrestore(wl->wlc, macintmask);
1276 spin_unlock_irqrestore(&wl->isr_lock, flags);
1277 }
1278
1279 /*
1280 * precondition: perimeter lock has been acquired
1281 */
1282 int brcms_up(struct brcms_info *wl)
1283 {
1284 int error = 0;
1285
1286 if (wl->pub->up)
1287 return 0;
1288
1289 error = brcms_c_up(wl->wlc);
1290
1291 return error;
1292 }
1293
1294 /*
1295 * precondition: perimeter lock has been acquired
1296 */
1297 void brcms_down(struct brcms_info *wl)
1298 {
1299 uint callbacks, ret_val = 0;
1300
1301 /* call common down function */
1302 ret_val = brcms_c_down(wl->wlc);
1303 callbacks = atomic_read(&wl->callbacks) - ret_val;
1304
1305 /* wait for down callbacks to complete */
1306 spin_unlock_bh(&wl->lock);
1307
1308 /* For HIGH_only driver, it's important to actually schedule other work,
1309 * not just spin wait since everything runs at schedule level
1310 */
1311 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1312
1313 spin_lock_bh(&wl->lock);
1314 }
1315
1316 /*
1317 * precondition: perimeter lock is not acquired
1318 */
1319 static void _brcms_timer(struct work_struct *work)
1320 {
1321 struct brcms_timer *t = container_of(work, struct brcms_timer,
1322 dly_wrk.work);
1323
1324 spin_lock_bh(&t->wl->lock);
1325
1326 if (t->set) {
1327 if (t->periodic) {
1328 atomic_inc(&t->wl->callbacks);
1329 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1330 &t->dly_wrk,
1331 msecs_to_jiffies(t->ms));
1332 } else {
1333 t->set = false;
1334 }
1335
1336 t->fn(t->arg);
1337 }
1338
1339 atomic_dec(&t->wl->callbacks);
1340
1341 spin_unlock_bh(&t->wl->lock);
1342 }
1343
1344 /*
1345 * Adds a timer to the list. Caller supplies a timer function.
1346 * Is called from wlc.
1347 *
1348 * precondition: perimeter lock has been acquired
1349 */
1350 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1351 void (*fn) (void *arg),
1352 void *arg, const char *name)
1353 {
1354 struct brcms_timer *t;
1355
1356 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1357 if (!t)
1358 return NULL;
1359
1360 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1361 t->wl = wl;
1362 t->fn = fn;
1363 t->arg = arg;
1364 t->next = wl->timers;
1365 wl->timers = t;
1366
1367 #ifdef DEBUG
1368 t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1369 if (t->name)
1370 strcpy(t->name, name);
1371 #endif
1372
1373 return t;
1374 }
1375
1376 /*
1377 * adds only the kernel timer since it's going to be more accurate
1378 * as well as it's easier to make it periodic
1379 *
1380 * precondition: perimeter lock has been acquired
1381 */
1382 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1383 {
1384 struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1385
1386 #ifdef DEBUG
1387 if (t->set)
1388 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1389 __func__, t->name, periodic);
1390 #endif
1391 t->ms = ms;
1392 t->periodic = (bool) periodic;
1393 t->set = true;
1394
1395 atomic_inc(&t->wl->callbacks);
1396
1397 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1398 }
1399
1400 /*
1401 * return true if timer successfully deleted, false if still pending
1402 *
1403 * precondition: perimeter lock has been acquired
1404 */
1405 bool brcms_del_timer(struct brcms_timer *t)
1406 {
1407 if (t->set) {
1408 t->set = false;
1409 if (!cancel_delayed_work(&t->dly_wrk))
1410 return false;
1411
1412 atomic_dec(&t->wl->callbacks);
1413 }
1414
1415 return true;
1416 }
1417
1418 /*
1419 * precondition: perimeter lock has been acquired
1420 */
1421 void brcms_free_timer(struct brcms_timer *t)
1422 {
1423 struct brcms_info *wl = t->wl;
1424 struct brcms_timer *tmp;
1425
1426 /* delete the timer in case it is active */
1427 brcms_del_timer(t);
1428
1429 if (wl->timers == t) {
1430 wl->timers = wl->timers->next;
1431 #ifdef DEBUG
1432 kfree(t->name);
1433 #endif
1434 kfree(t);
1435 return;
1436
1437 }
1438
1439 tmp = wl->timers;
1440 while (tmp) {
1441 if (tmp->next == t) {
1442 tmp->next = t->next;
1443 #ifdef DEBUG
1444 kfree(t->name);
1445 #endif
1446 kfree(t);
1447 return;
1448 }
1449 tmp = tmp->next;
1450 }
1451
1452 }
1453
1454 /*
1455 * precondition: perimeter lock has been acquired
1456 */
1457 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1458 {
1459 int i, entry;
1460 const u8 *pdata;
1461 struct firmware_hdr *hdr;
1462 for (i = 0; i < wl->fw.fw_cnt; i++) {
1463 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1464 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1465 entry++, hdr++) {
1466 u32 len = le32_to_cpu(hdr->len);
1467 if (le32_to_cpu(hdr->idx) == idx) {
1468 pdata = wl->fw.fw_bin[i]->data +
1469 le32_to_cpu(hdr->offset);
1470 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1471 if (*pbuf == NULL)
1472 goto fail;
1473
1474 return 0;
1475 }
1476 }
1477 }
1478 wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1479 idx);
1480 *pbuf = NULL;
1481 fail:
1482 return -ENODATA;
1483 }
1484
1485 /*
1486 * Precondition: Since this function is called in brcms_bcma_probe() context,
1487 * no locking is required.
1488 */
1489 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1490 {
1491 int i, entry;
1492 const u8 *pdata;
1493 struct firmware_hdr *hdr;
1494 for (i = 0; i < wl->fw.fw_cnt; i++) {
1495 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1496 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1497 entry++, hdr++) {
1498 if (le32_to_cpu(hdr->idx) == idx) {
1499 pdata = wl->fw.fw_bin[i]->data +
1500 le32_to_cpu(hdr->offset);
1501 if (le32_to_cpu(hdr->len) != 4) {
1502 wiphy_err(wl->wiphy,
1503 "ERROR: fw hdr len\n");
1504 return -ENOMSG;
1505 }
1506 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1507 return 0;
1508 }
1509 }
1510 }
1511 wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1512 return -ENOMSG;
1513 }
1514
1515 /*
1516 * precondition: can both be called locked and unlocked
1517 */
1518 void brcms_ucode_free_buf(void *p)
1519 {
1520 kfree(p);
1521 }
1522
1523 /*
1524 * checks validity of all firmware images loaded from user space
1525 *
1526 * Precondition: Since this function is called in brcms_bcma_probe() context,
1527 * no locking is required.
1528 */
1529 int brcms_check_firmwares(struct brcms_info *wl)
1530 {
1531 int i;
1532 int entry;
1533 int rc = 0;
1534 const struct firmware *fw;
1535 const struct firmware *fw_hdr;
1536 struct firmware_hdr *ucode_hdr;
1537 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1538 fw = wl->fw.fw_bin[i];
1539 fw_hdr = wl->fw.fw_hdr[i];
1540 if (fw == NULL && fw_hdr == NULL) {
1541 break;
1542 } else if (fw == NULL || fw_hdr == NULL) {
1543 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1544 __func__);
1545 rc = -EBADF;
1546 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1547 wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1548 "size %zu/%zu\n", __func__, fw_hdr->size,
1549 sizeof(struct firmware_hdr));
1550 rc = -EBADF;
1551 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1552 wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1553 "%zu\n", __func__, fw->size);
1554 rc = -EBADF;
1555 } else {
1556 /* check if ucode section overruns firmware image */
1557 ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1558 for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1559 !rc; entry++, ucode_hdr++) {
1560 if (le32_to_cpu(ucode_hdr->offset) +
1561 le32_to_cpu(ucode_hdr->len) >
1562 fw->size) {
1563 wiphy_err(wl->wiphy,
1564 "%s: conflicting bin/hdr\n",
1565 __func__);
1566 rc = -EBADF;
1567 }
1568 }
1569 }
1570 }
1571 if (rc == 0 && wl->fw.fw_cnt != i) {
1572 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1573 wl->fw.fw_cnt);
1574 rc = -EBADF;
1575 }
1576 return rc;
1577 }
1578
1579 /*
1580 * precondition: perimeter lock has been acquired
1581 */
1582 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1583 {
1584 bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1585
1586 spin_unlock_bh(&wl->lock);
1587 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1588 if (blocked)
1589 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1590 spin_lock_bh(&wl->lock);
1591 return blocked;
1592 }
1593
1594 /*
1595 * precondition: perimeter lock has been acquired
1596 */
1597 void brcms_msleep(struct brcms_info *wl, uint ms)
1598 {
1599 spin_unlock_bh(&wl->lock);
1600 msleep(ms);
1601 spin_lock_bh(&wl->lock);
1602 }
Ubuntu Artful kernel mirror