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[mirror_ubuntu-zesty-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 "nicpci.h"
29 #include "phy/phy_int.h"
30 #include "d11.h"
31 #include "channel.h"
32 #include "scb.h"
33 #include "pub.h"
34 #include "ucode_loader.h"
35 #include "mac80211_if.h"
36 #include "main.h"
37
38 #define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */
39
40 /* Flags we support */
41 #define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
42 FIF_ALLMULTI | \
43 FIF_FCSFAIL | \
44 FIF_CONTROL | \
45 FIF_OTHER_BSS | \
46 FIF_BCN_PRBRESP_PROMISC | \
47 FIF_PSPOLL)
48
49 #define CHAN2GHZ(channel, freqency, chflags) { \
50 .band = IEEE80211_BAND_2GHZ, \
51 .center_freq = (freqency), \
52 .hw_value = (channel), \
53 .flags = chflags, \
54 .max_antenna_gain = 0, \
55 .max_power = 19, \
56 }
57
58 #define CHAN5GHZ(channel, chflags) { \
59 .band = IEEE80211_BAND_5GHZ, \
60 .center_freq = 5000 + 5*(channel), \
61 .hw_value = (channel), \
62 .flags = chflags, \
63 .max_antenna_gain = 0, \
64 .max_power = 21, \
65 }
66
67 #define RATE(rate100m, _flags) { \
68 .bitrate = (rate100m), \
69 .flags = (_flags), \
70 .hw_value = (rate100m / 5), \
71 }
72
73 struct firmware_hdr {
74 __le32 offset;
75 __le32 len;
76 __le32 idx;
77 };
78
79 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
80 "brcm/bcm43xx",
81 NULL
82 };
83
84 static int n_adapters_found;
85
86 MODULE_AUTHOR("Broadcom Corporation");
87 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
88 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
89 MODULE_LICENSE("Dual BSD/GPL");
90
91
92 /* recognized BCMA Core IDs */
93 static struct bcma_device_id brcms_coreid_table[] = {
94 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
95 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
96 BCMA_CORETABLE_END
97 };
98 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
99
100 #ifdef DEBUG
101 static int msglevel = 0xdeadbeef;
102 module_param(msglevel, int, 0);
103 #endif /* DEBUG */
104
105 static struct ieee80211_channel brcms_2ghz_chantable[] = {
106 CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
107 CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
108 CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
109 CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
110 CHAN2GHZ(5, 2432, 0),
111 CHAN2GHZ(6, 2437, 0),
112 CHAN2GHZ(7, 2442, 0),
113 CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
114 CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
115 CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
116 CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
117 CHAN2GHZ(12, 2467,
118 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
119 IEEE80211_CHAN_NO_HT40PLUS),
120 CHAN2GHZ(13, 2472,
121 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
122 IEEE80211_CHAN_NO_HT40PLUS),
123 CHAN2GHZ(14, 2484,
124 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
125 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
126 };
127
128 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
129 /* UNII-1 */
130 CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
131 CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
132 CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
133 CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
134 /* UNII-2 */
135 CHAN5GHZ(52,
136 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
137 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
138 CHAN5GHZ(56,
139 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
140 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
141 CHAN5GHZ(60,
142 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
143 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
144 CHAN5GHZ(64,
145 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
146 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
147 /* MID */
148 CHAN5GHZ(100,
149 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
150 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
151 CHAN5GHZ(104,
152 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
153 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
154 CHAN5GHZ(108,
155 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
156 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
157 CHAN5GHZ(112,
158 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
159 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
160 CHAN5GHZ(116,
161 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
162 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
163 CHAN5GHZ(120,
164 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
165 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
166 CHAN5GHZ(124,
167 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
168 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
169 CHAN5GHZ(128,
170 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
171 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
172 CHAN5GHZ(132,
173 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
174 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
175 CHAN5GHZ(136,
176 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
177 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
178 CHAN5GHZ(140,
179 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
180 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
181 IEEE80211_CHAN_NO_HT40MINUS),
182 /* UNII-3 */
183 CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
184 CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
185 CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
186 CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
187 CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
188 };
189
190 /*
191 * The rate table is used for both 2.4G and 5G rates. The
192 * latter being a subset as it does not support CCK rates.
193 */
194 static struct ieee80211_rate legacy_ratetable[] = {
195 RATE(10, 0),
196 RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
197 RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
198 RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
199 RATE(60, 0),
200 RATE(90, 0),
201 RATE(120, 0),
202 RATE(180, 0),
203 RATE(240, 0),
204 RATE(360, 0),
205 RATE(480, 0),
206 RATE(540, 0),
207 };
208
209 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
210 .band = IEEE80211_BAND_2GHZ,
211 .channels = brcms_2ghz_chantable,
212 .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
213 .bitrates = legacy_ratetable,
214 .n_bitrates = ARRAY_SIZE(legacy_ratetable),
215 .ht_cap = {
216 /* from include/linux/ieee80211.h */
217 .cap = IEEE80211_HT_CAP_GRN_FLD |
218 IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
219 .ht_supported = true,
220 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
221 .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
222 .mcs = {
223 /* placeholders for now */
224 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
225 .rx_highest = cpu_to_le16(500),
226 .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
227 }
228 };
229
230 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
231 .band = IEEE80211_BAND_5GHZ,
232 .channels = brcms_5ghz_nphy_chantable,
233 .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
234 .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
235 .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
236 BRCMS_LEGACY_5G_RATE_OFFSET,
237 .ht_cap = {
238 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
239 IEEE80211_HT_CAP_SGI_40,
240 .ht_supported = true,
241 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
242 .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
243 .mcs = {
244 /* placeholders for now */
245 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
246 .rx_highest = cpu_to_le16(500),
247 .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
248 }
249 };
250
251 /* flags the given rate in rateset as requested */
252 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
253 {
254 u32 i;
255
256 for (i = 0; i < rs->count; i++) {
257 if (rate != (rs->rates[i] & 0x7f))
258 continue;
259
260 if (is_br)
261 rs->rates[i] |= BRCMS_RATE_FLAG;
262 else
263 rs->rates[i] &= BRCMS_RATE_MASK;
264 return;
265 }
266 }
267
268 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
269 {
270 struct brcms_info *wl = hw->priv;
271
272 spin_lock_bh(&wl->lock);
273 if (!wl->pub->up) {
274 wiphy_err(wl->wiphy, "ops->tx called while down\n");
275 kfree_skb(skb);
276 goto done;
277 }
278 brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
279 done:
280 spin_unlock_bh(&wl->lock);
281 }
282
283 static int brcms_ops_start(struct ieee80211_hw *hw)
284 {
285 struct brcms_info *wl = hw->priv;
286 bool blocked;
287 int err;
288
289 ieee80211_wake_queues(hw);
290 spin_lock_bh(&wl->lock);
291 blocked = brcms_rfkill_set_hw_state(wl);
292 spin_unlock_bh(&wl->lock);
293 if (!blocked)
294 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
295
296 spin_lock_bh(&wl->lock);
297 /* avoid acknowledging frames before a non-monitor device is added */
298 wl->mute_tx = true;
299
300 if (!wl->pub->up)
301 err = brcms_up(wl);
302 else
303 err = -ENODEV;
304 spin_unlock_bh(&wl->lock);
305
306 if (err != 0)
307 wiphy_err(hw->wiphy, "%s: brcms_up() returned %d\n", __func__,
308 err);
309 return err;
310 }
311
312 static void brcms_ops_stop(struct ieee80211_hw *hw)
313 {
314 struct brcms_info *wl = hw->priv;
315 int status;
316
317 ieee80211_stop_queues(hw);
318
319 if (wl->wlc == NULL)
320 return;
321
322 spin_lock_bh(&wl->lock);
323 status = brcms_c_chipmatch(wl->wlc->hw->vendorid,
324 wl->wlc->hw->deviceid);
325 spin_unlock_bh(&wl->lock);
326 if (!status) {
327 wiphy_err(wl->wiphy,
328 "wl: brcms_ops_stop: chipmatch failed\n");
329 return;
330 }
331
332 /* put driver in down state */
333 spin_lock_bh(&wl->lock);
334 brcms_down(wl);
335 spin_unlock_bh(&wl->lock);
336 }
337
338 static int
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 /*
726 * is called in brcms_bcma_probe() context, therefore no locking required.
727 */
728 static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
729 {
730 return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
731 }
732
733 void brcms_dpc(unsigned long data)
734 {
735 struct brcms_info *wl;
736
737 wl = (struct brcms_info *) data;
738
739 spin_lock_bh(&wl->lock);
740
741 /* call the common second level interrupt handler */
742 if (wl->pub->up) {
743 if (wl->resched) {
744 unsigned long flags;
745
746 spin_lock_irqsave(&wl->isr_lock, flags);
747 brcms_c_intrsupd(wl->wlc);
748 spin_unlock_irqrestore(&wl->isr_lock, flags);
749 }
750
751 wl->resched = brcms_c_dpc(wl->wlc, true);
752 }
753
754 /* brcms_c_dpc() may bring the driver down */
755 if (!wl->pub->up)
756 goto done;
757
758 /* re-schedule dpc */
759 if (wl->resched)
760 tasklet_schedule(&wl->tasklet);
761 else
762 /* re-enable interrupts */
763 brcms_intrson(wl);
764
765 done:
766 spin_unlock_bh(&wl->lock);
767 }
768
769 /*
770 * Precondition: Since this function is called in brcms_pci_probe() context,
771 * no locking is required.
772 */
773 static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev)
774 {
775 int status;
776 struct device *device = &pdev->dev;
777 char fw_name[100];
778 int i;
779
780 memset(&wl->fw, 0, sizeof(struct brcms_firmware));
781 for (i = 0; i < MAX_FW_IMAGES; i++) {
782 if (brcms_firmwares[i] == NULL)
783 break;
784 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
785 UCODE_LOADER_API_VER);
786 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
787 if (status) {
788 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
789 KBUILD_MODNAME, fw_name);
790 return status;
791 }
792 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
793 UCODE_LOADER_API_VER);
794 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
795 if (status) {
796 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
797 KBUILD_MODNAME, fw_name);
798 return status;
799 }
800 wl->fw.hdr_num_entries[i] =
801 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
802 }
803 wl->fw.fw_cnt = i;
804 return brcms_ucode_data_init(wl, &wl->ucode);
805 }
806
807 /*
808 * Precondition: Since this function is called in brcms_pci_probe() context,
809 * no locking is required.
810 */
811 static void brcms_release_fw(struct brcms_info *wl)
812 {
813 int i;
814 for (i = 0; i < MAX_FW_IMAGES; i++) {
815 release_firmware(wl->fw.fw_bin[i]);
816 release_firmware(wl->fw.fw_hdr[i]);
817 }
818 }
819
820 /**
821 * This function frees the WL per-device resources.
822 *
823 * This function frees resources owned by the WL device pointed to
824 * by the wl parameter.
825 *
826 * precondition: can both be called locked and unlocked
827 *
828 */
829 static void brcms_free(struct brcms_info *wl)
830 {
831 struct brcms_timer *t, *next;
832
833 /* free ucode data */
834 if (wl->fw.fw_cnt)
835 brcms_ucode_data_free(&wl->ucode);
836 if (wl->irq)
837 free_irq(wl->irq, wl);
838
839 /* kill dpc */
840 tasklet_kill(&wl->tasklet);
841
842 if (wl->pub)
843 brcms_c_module_unregister(wl->pub, "linux", wl);
844
845 /* free common resources */
846 if (wl->wlc) {
847 brcms_c_detach(wl->wlc);
848 wl->wlc = NULL;
849 wl->pub = NULL;
850 }
851
852 /* virtual interface deletion is deferred so we cannot spinwait */
853
854 /* wait for all pending callbacks to complete */
855 while (atomic_read(&wl->callbacks) > 0)
856 schedule();
857
858 /* free timers */
859 for (t = wl->timers; t; t = next) {
860 next = t->next;
861 #ifdef DEBUG
862 kfree(t->name);
863 #endif
864 kfree(t);
865 }
866 }
867
868 /*
869 * called from both kernel as from this kernel module (error flow on attach)
870 * precondition: perimeter lock is not acquired.
871 */
872 static void brcms_remove(struct bcma_device *pdev)
873 {
874 struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
875 struct brcms_info *wl = hw->priv;
876
877 if (wl->wlc) {
878 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
879 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
880 ieee80211_unregister_hw(hw);
881 }
882
883 brcms_free(wl);
884
885 bcma_set_drvdata(pdev, NULL);
886 ieee80211_free_hw(hw);
887 }
888
889 static irqreturn_t brcms_isr(int irq, void *dev_id)
890 {
891 struct brcms_info *wl;
892 bool ours, wantdpc;
893
894 wl = (struct brcms_info *) dev_id;
895
896 spin_lock(&wl->isr_lock);
897
898 /* call common first level interrupt handler */
899 ours = brcms_c_isr(wl->wlc, &wantdpc);
900 if (ours) {
901 /* if more to do... */
902 if (wantdpc) {
903
904 /* ...and call the second level interrupt handler */
905 /* schedule dpc */
906 tasklet_schedule(&wl->tasklet);
907 }
908 }
909
910 spin_unlock(&wl->isr_lock);
911
912 return IRQ_RETVAL(ours);
913 }
914
915 /*
916 * is called in brcms_pci_probe() context, therefore no locking required.
917 */
918 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
919 {
920 struct brcms_info *wl = hw->priv;
921 struct brcms_c_info *wlc = wl->wlc;
922 struct ieee80211_supported_band *band;
923 int has_5g = 0;
924 u16 phy_type;
925
926 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
927 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
928
929 phy_type = brcms_c_get_phy_type(wl->wlc, 0);
930 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
931 band = &wlc->bandstate[BAND_2G_INDEX]->band;
932 *band = brcms_band_2GHz_nphy_template;
933 if (phy_type == PHY_TYPE_LCN) {
934 /* Single stream */
935 band->ht_cap.mcs.rx_mask[1] = 0;
936 band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
937 }
938 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
939 } else {
940 return -EPERM;
941 }
942
943 /* Assume all bands use the same phy. True for 11n devices. */
944 if (wl->pub->_nbands > 1) {
945 has_5g++;
946 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
947 band = &wlc->bandstate[BAND_5G_INDEX]->band;
948 *band = brcms_band_5GHz_nphy_template;
949 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
950 } else {
951 return -EPERM;
952 }
953 }
954 return 0;
955 }
956
957 /*
958 * is called in brcms_pci_probe() context, therefore no locking required.
959 */
960 static int ieee_hw_init(struct ieee80211_hw *hw)
961 {
962 hw->flags = IEEE80211_HW_SIGNAL_DBM
963 /* | IEEE80211_HW_CONNECTION_MONITOR What is this? */
964 | IEEE80211_HW_REPORTS_TX_ACK_STATUS
965 | IEEE80211_HW_AMPDU_AGGREGATION;
966
967 hw->extra_tx_headroom = brcms_c_get_header_len();
968 hw->queues = N_TX_QUEUES;
969 hw->max_rates = 2; /* Primary rate and 1 fallback rate */
970
971 /* channel change time is dependent on chip and band */
972 hw->channel_change_time = 7 * 1000;
973 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
974
975 hw->rate_control_algorithm = "minstrel_ht";
976
977 hw->sta_data_size = 0;
978 return ieee_hw_rate_init(hw);
979 }
980
981 /**
982 * attach to the WL device.
983 *
984 * Attach to the WL device identified by vendor and device parameters.
985 * regs is a host accessible memory address pointing to WL device registers.
986 *
987 * brcms_attach is not defined as static because in the case where no bus
988 * is defined, wl_attach will never be called, and thus, gcc will issue
989 * a warning that this function is defined but not used if we declare
990 * it as static.
991 *
992 *
993 * is called in brcms_bcma_probe() context, therefore no locking required.
994 */
995 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
996 {
997 struct brcms_info *wl = NULL;
998 int unit, err;
999 struct ieee80211_hw *hw;
1000 u8 perm[ETH_ALEN];
1001
1002 unit = n_adapters_found;
1003 err = 0;
1004
1005 if (unit < 0)
1006 return NULL;
1007
1008 /* allocate private info */
1009 hw = bcma_get_drvdata(pdev);
1010 if (hw != NULL)
1011 wl = hw->priv;
1012 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1013 return NULL;
1014 wl->wiphy = hw->wiphy;
1015
1016 atomic_set(&wl->callbacks, 0);
1017
1018 /* setup the bottom half handler */
1019 tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1020
1021 spin_lock_init(&wl->lock);
1022 spin_lock_init(&wl->isr_lock);
1023
1024 /* prepare ucode */
1025 if (brcms_request_fw(wl, pdev->bus->host_pci) < 0) {
1026 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1027 "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1028 brcms_release_fw(wl);
1029 brcms_remove(pdev);
1030 return NULL;
1031 }
1032
1033 /* common load-time initialization */
1034 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1035 brcms_release_fw(wl);
1036 if (!wl->wlc) {
1037 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1038 KBUILD_MODNAME, err);
1039 goto fail;
1040 }
1041 wl->pub = brcms_c_pub(wl->wlc);
1042
1043 wl->pub->ieee_hw = hw;
1044
1045 /* register our interrupt handler */
1046 if (request_irq(pdev->bus->host_pci->irq, brcms_isr,
1047 IRQF_SHARED, KBUILD_MODNAME, wl)) {
1048 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1049 goto fail;
1050 }
1051 wl->irq = pdev->bus->host_pci->irq;
1052
1053 /* register module */
1054 brcms_c_module_register(wl->pub, "linux", wl, NULL);
1055
1056 if (ieee_hw_init(hw)) {
1057 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1058 __func__);
1059 goto fail;
1060 }
1061
1062 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1063 if (WARN_ON(!is_valid_ether_addr(perm)))
1064 goto fail;
1065 SET_IEEE80211_PERM_ADDR(hw, perm);
1066
1067 err = ieee80211_register_hw(hw);
1068 if (err)
1069 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1070 "%d\n", __func__, err);
1071
1072 if (wl->pub->srom_ccode[0] && brcms_set_hint(wl, wl->pub->srom_ccode))
1073 wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
1074 __func__, err);
1075
1076 n_adapters_found++;
1077 return wl;
1078
1079 fail:
1080 brcms_free(wl);
1081 return NULL;
1082 }
1083
1084
1085
1086 /**
1087 * determines if a device is a WL device, and if so, attaches it.
1088 *
1089 * This function determines if a device pointed to by pdev is a WL device,
1090 * and if so, performs a brcms_attach() on it.
1091 *
1092 * Perimeter lock is initialized in the course of this function.
1093 */
1094 static int __devinit brcms_bcma_probe(struct bcma_device *pdev)
1095 {
1096 struct brcms_info *wl;
1097 struct ieee80211_hw *hw;
1098
1099 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1100 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1101 pdev->bus->host_pci->irq);
1102
1103 if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1104 (pdev->id.id != BCMA_CORE_80211))
1105 return -ENODEV;
1106
1107 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1108 if (!hw) {
1109 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1110 return -ENOMEM;
1111 }
1112
1113 SET_IEEE80211_DEV(hw, &pdev->dev);
1114
1115 bcma_set_drvdata(pdev, hw);
1116
1117 memset(hw->priv, 0, sizeof(*wl));
1118
1119 wl = brcms_attach(pdev);
1120 if (!wl) {
1121 pr_err("%s: brcms_attach failed!\n", __func__);
1122 return -ENODEV;
1123 }
1124 return 0;
1125 }
1126
1127 static int brcms_suspend(struct bcma_device *pdev)
1128 {
1129 struct brcms_info *wl;
1130 struct ieee80211_hw *hw;
1131
1132 hw = bcma_get_drvdata(pdev);
1133 wl = hw->priv;
1134 if (!wl) {
1135 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1136 __func__);
1137 return -ENODEV;
1138 }
1139
1140 /* only need to flag hw is down for proper resume */
1141 spin_lock_bh(&wl->lock);
1142 wl->pub->hw_up = false;
1143 spin_unlock_bh(&wl->lock);
1144
1145 pr_debug("brcms_suspend ok\n");
1146
1147 return 0;
1148 }
1149
1150 static int brcms_resume(struct bcma_device *pdev)
1151 {
1152 pr_debug("brcms_resume ok\n");
1153 return 0;
1154 }
1155
1156 static struct bcma_driver brcms_bcma_driver = {
1157 .name = KBUILD_MODNAME,
1158 .probe = brcms_bcma_probe,
1159 .suspend = brcms_suspend,
1160 .resume = brcms_resume,
1161 .remove = __devexit_p(brcms_remove),
1162 .id_table = brcms_coreid_table,
1163 };
1164
1165 /**
1166 * This is the main entry point for the brcmsmac driver.
1167 *
1168 * This function is scheduled upon module initialization and
1169 * does the driver registration, which result in brcms_bcma_probe()
1170 * call resulting in the driver bringup.
1171 */
1172 static void brcms_driver_init(struct work_struct *work)
1173 {
1174 int error;
1175
1176 error = bcma_driver_register(&brcms_bcma_driver);
1177 if (error)
1178 pr_err("%s: register returned %d\n", __func__, error);
1179 }
1180
1181 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1182
1183 static int __init brcms_module_init(void)
1184 {
1185 #ifdef DEBUG
1186 if (msglevel != 0xdeadbeef)
1187 brcm_msg_level = msglevel;
1188 #endif
1189 if (!schedule_work(&brcms_driver_work))
1190 return -EBUSY;
1191
1192 return 0;
1193 }
1194
1195 /**
1196 * This function unloads the brcmsmac driver from the system.
1197 *
1198 * This function unconditionally unloads the brcmsmac driver module from the
1199 * system.
1200 *
1201 */
1202 static void __exit brcms_module_exit(void)
1203 {
1204 cancel_work_sync(&brcms_driver_work);
1205 bcma_driver_unregister(&brcms_bcma_driver);
1206 }
1207
1208 module_init(brcms_module_init);
1209 module_exit(brcms_module_exit);
1210
1211 /*
1212 * precondition: perimeter lock has been acquired
1213 */
1214 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1215 bool state, int prio)
1216 {
1217 wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1218 }
1219
1220 /*
1221 * precondition: perimeter lock has been acquired
1222 */
1223 void brcms_init(struct brcms_info *wl)
1224 {
1225 BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1226 brcms_reset(wl);
1227 brcms_c_init(wl->wlc, wl->mute_tx);
1228 }
1229
1230 /*
1231 * precondition: perimeter lock has been acquired
1232 */
1233 uint brcms_reset(struct brcms_info *wl)
1234 {
1235 BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1236 brcms_c_reset(wl->wlc);
1237
1238 /* dpc will not be rescheduled */
1239 wl->resched = false;
1240
1241 return 0;
1242 }
1243
1244 void brcms_fatal_error(struct brcms_info *wl)
1245 {
1246 wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1247 wl->wlc->pub->unit);
1248 brcms_reset(wl);
1249 ieee80211_restart_hw(wl->pub->ieee_hw);
1250 }
1251
1252 /*
1253 * These are interrupt on/off entry points. Disable interrupts
1254 * during interrupt state transition.
1255 */
1256 void brcms_intrson(struct brcms_info *wl)
1257 {
1258 unsigned long flags;
1259
1260 spin_lock_irqsave(&wl->isr_lock, flags);
1261 brcms_c_intrson(wl->wlc);
1262 spin_unlock_irqrestore(&wl->isr_lock, flags);
1263 }
1264
1265 u32 brcms_intrsoff(struct brcms_info *wl)
1266 {
1267 unsigned long flags;
1268 u32 status;
1269
1270 spin_lock_irqsave(&wl->isr_lock, flags);
1271 status = brcms_c_intrsoff(wl->wlc);
1272 spin_unlock_irqrestore(&wl->isr_lock, flags);
1273 return status;
1274 }
1275
1276 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1277 {
1278 unsigned long flags;
1279
1280 spin_lock_irqsave(&wl->isr_lock, flags);
1281 brcms_c_intrsrestore(wl->wlc, macintmask);
1282 spin_unlock_irqrestore(&wl->isr_lock, flags);
1283 }
1284
1285 /*
1286 * precondition: perimeter lock has been acquired
1287 */
1288 int brcms_up(struct brcms_info *wl)
1289 {
1290 int error = 0;
1291
1292 if (wl->pub->up)
1293 return 0;
1294
1295 error = brcms_c_up(wl->wlc);
1296
1297 return error;
1298 }
1299
1300 /*
1301 * precondition: perimeter lock has been acquired
1302 */
1303 void brcms_down(struct brcms_info *wl)
1304 {
1305 uint callbacks, ret_val = 0;
1306
1307 /* call common down function */
1308 ret_val = brcms_c_down(wl->wlc);
1309 callbacks = atomic_read(&wl->callbacks) - ret_val;
1310
1311 /* wait for down callbacks to complete */
1312 spin_unlock_bh(&wl->lock);
1313
1314 /* For HIGH_only driver, it's important to actually schedule other work,
1315 * not just spin wait since everything runs at schedule level
1316 */
1317 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1318
1319 spin_lock_bh(&wl->lock);
1320 }
1321
1322 /*
1323 * precondition: perimeter lock is not acquired
1324 */
1325 static void _brcms_timer(struct work_struct *work)
1326 {
1327 struct brcms_timer *t = container_of(work, struct brcms_timer,
1328 dly_wrk.work);
1329
1330 spin_lock_bh(&t->wl->lock);
1331
1332 if (t->set) {
1333 if (t->periodic) {
1334 atomic_inc(&t->wl->callbacks);
1335 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1336 &t->dly_wrk,
1337 msecs_to_jiffies(t->ms));
1338 } else {
1339 t->set = false;
1340 }
1341
1342 t->fn(t->arg);
1343 }
1344
1345 atomic_dec(&t->wl->callbacks);
1346
1347 spin_unlock_bh(&t->wl->lock);
1348 }
1349
1350 /*
1351 * Adds a timer to the list. Caller supplies a timer function.
1352 * Is called from wlc.
1353 *
1354 * precondition: perimeter lock has been acquired
1355 */
1356 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1357 void (*fn) (void *arg),
1358 void *arg, const char *name)
1359 {
1360 struct brcms_timer *t;
1361
1362 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1363 if (!t)
1364 return NULL;
1365
1366 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1367 t->wl = wl;
1368 t->fn = fn;
1369 t->arg = arg;
1370 t->next = wl->timers;
1371 wl->timers = t;
1372
1373 #ifdef DEBUG
1374 t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1375 if (t->name)
1376 strcpy(t->name, name);
1377 #endif
1378
1379 return t;
1380 }
1381
1382 /*
1383 * adds only the kernel timer since it's going to be more accurate
1384 * as well as it's easier to make it periodic
1385 *
1386 * precondition: perimeter lock has been acquired
1387 */
1388 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1389 {
1390 struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1391
1392 #ifdef DEBUG
1393 if (t->set)
1394 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1395 __func__, t->name, periodic);
1396 #endif
1397 t->ms = ms;
1398 t->periodic = (bool) periodic;
1399 t->set = true;
1400
1401 atomic_inc(&t->wl->callbacks);
1402
1403 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1404 }
1405
1406 /*
1407 * return true if timer successfully deleted, false if still pending
1408 *
1409 * precondition: perimeter lock has been acquired
1410 */
1411 bool brcms_del_timer(struct brcms_timer *t)
1412 {
1413 if (t->set) {
1414 t->set = false;
1415 if (!cancel_delayed_work(&t->dly_wrk))
1416 return false;
1417
1418 atomic_dec(&t->wl->callbacks);
1419 }
1420
1421 return true;
1422 }
1423
1424 /*
1425 * precondition: perimeter lock has been acquired
1426 */
1427 void brcms_free_timer(struct brcms_timer *t)
1428 {
1429 struct brcms_info *wl = t->wl;
1430 struct brcms_timer *tmp;
1431
1432 /* delete the timer in case it is active */
1433 brcms_del_timer(t);
1434
1435 if (wl->timers == t) {
1436 wl->timers = wl->timers->next;
1437 #ifdef DEBUG
1438 kfree(t->name);
1439 #endif
1440 kfree(t);
1441 return;
1442
1443 }
1444
1445 tmp = wl->timers;
1446 while (tmp) {
1447 if (tmp->next == t) {
1448 tmp->next = t->next;
1449 #ifdef DEBUG
1450 kfree(t->name);
1451 #endif
1452 kfree(t);
1453 return;
1454 }
1455 tmp = tmp->next;
1456 }
1457
1458 }
1459
1460 /*
1461 * precondition: perimeter lock has been acquired
1462 */
1463 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1464 {
1465 int i, entry;
1466 const u8 *pdata;
1467 struct firmware_hdr *hdr;
1468 for (i = 0; i < wl->fw.fw_cnt; i++) {
1469 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1470 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1471 entry++, hdr++) {
1472 u32 len = le32_to_cpu(hdr->len);
1473 if (le32_to_cpu(hdr->idx) == idx) {
1474 pdata = wl->fw.fw_bin[i]->data +
1475 le32_to_cpu(hdr->offset);
1476 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1477 if (*pbuf == NULL)
1478 goto fail;
1479
1480 return 0;
1481 }
1482 }
1483 }
1484 wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1485 idx);
1486 *pbuf = NULL;
1487 fail:
1488 return -ENODATA;
1489 }
1490
1491 /*
1492 * Precondition: Since this function is called in brcms_bcma_probe() context,
1493 * no locking is required.
1494 */
1495 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1496 {
1497 int i, entry;
1498 const u8 *pdata;
1499 struct firmware_hdr *hdr;
1500 for (i = 0; i < wl->fw.fw_cnt; i++) {
1501 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1502 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1503 entry++, hdr++) {
1504 if (le32_to_cpu(hdr->idx) == idx) {
1505 pdata = wl->fw.fw_bin[i]->data +
1506 le32_to_cpu(hdr->offset);
1507 if (le32_to_cpu(hdr->len) != 4) {
1508 wiphy_err(wl->wiphy,
1509 "ERROR: fw hdr len\n");
1510 return -ENOMSG;
1511 }
1512 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1513 return 0;
1514 }
1515 }
1516 }
1517 wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1518 return -ENOMSG;
1519 }
1520
1521 /*
1522 * precondition: can both be called locked and unlocked
1523 */
1524 void brcms_ucode_free_buf(void *p)
1525 {
1526 kfree(p);
1527 }
1528
1529 /*
1530 * checks validity of all firmware images loaded from user space
1531 *
1532 * Precondition: Since this function is called in brcms_bcma_probe() context,
1533 * no locking is required.
1534 */
1535 int brcms_check_firmwares(struct brcms_info *wl)
1536 {
1537 int i;
1538 int entry;
1539 int rc = 0;
1540 const struct firmware *fw;
1541 const struct firmware *fw_hdr;
1542 struct firmware_hdr *ucode_hdr;
1543 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1544 fw = wl->fw.fw_bin[i];
1545 fw_hdr = wl->fw.fw_hdr[i];
1546 if (fw == NULL && fw_hdr == NULL) {
1547 break;
1548 } else if (fw == NULL || fw_hdr == NULL) {
1549 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1550 __func__);
1551 rc = -EBADF;
1552 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1553 wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1554 "size %zu/%zu\n", __func__, fw_hdr->size,
1555 sizeof(struct firmware_hdr));
1556 rc = -EBADF;
1557 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1558 wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1559 "%zu\n", __func__, fw->size);
1560 rc = -EBADF;
1561 } else {
1562 /* check if ucode section overruns firmware image */
1563 ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1564 for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1565 !rc; entry++, ucode_hdr++) {
1566 if (le32_to_cpu(ucode_hdr->offset) +
1567 le32_to_cpu(ucode_hdr->len) >
1568 fw->size) {
1569 wiphy_err(wl->wiphy,
1570 "%s: conflicting bin/hdr\n",
1571 __func__);
1572 rc = -EBADF;
1573 }
1574 }
1575 }
1576 }
1577 if (rc == 0 && wl->fw.fw_cnt != i) {
1578 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1579 wl->fw.fw_cnt);
1580 rc = -EBADF;
1581 }
1582 return rc;
1583 }
1584
1585 /*
1586 * precondition: perimeter lock has been acquired
1587 */
1588 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1589 {
1590 bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1591
1592 spin_unlock_bh(&wl->lock);
1593 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1594 if (blocked)
1595 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1596 spin_lock_bh(&wl->lock);
1597 return blocked;
1598 }
1599
1600 /*
1601 * precondition: perimeter lock has been acquired
1602 */
1603 void brcms_msleep(struct brcms_info *wl, uint ms)
1604 {
1605 spin_unlock_bh(&wl->lock);
1606 msleep(ms);
1607 spin_lock_bh(&wl->lock);
1608 }