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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
[mirror_ubuntu-bionic-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
19 #include <linux/etherdevice.h>
20 #include <linux/pci.h>
21 #include <linux/sched.h>
22 #include <linux/firmware.h>
23 #include <linux/interrupt.h>
24 #include <linux/module.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_PLCPFAIL | \
44 FIF_CONTROL | \
45 FIF_OTHER_BSS | \
46 FIF_BCN_PRBRESP_PROMISC)
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 /* recognized PCI IDs */
91 static DEFINE_PCI_DEVICE_TABLE(brcms_pci_id_table) = {
92 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4357) }, /* 43225 2G */
93 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4353) }, /* 43224 DUAL */
94 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4727) }, /* 4313 DUAL */
95 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x0576) }, /* 43224 Ven */
96 {0}
97 };
98
99 MODULE_DEVICE_TABLE(pci, brcms_pci_id_table);
100
101 #ifdef BCMDBG
102 static int msglevel = 0xdeadbeef;
103 module_param(msglevel, int, 0);
104 #endif /* BCMDBG */
105
106 static struct ieee80211_channel brcms_2ghz_chantable[] = {
107 CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
108 CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
109 CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
110 CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
111 CHAN2GHZ(5, 2432, 0),
112 CHAN2GHZ(6, 2437, 0),
113 CHAN2GHZ(7, 2442, 0),
114 CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
115 CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
116 CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
117 CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
118 CHAN2GHZ(12, 2467,
119 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
120 IEEE80211_CHAN_NO_HT40PLUS),
121 CHAN2GHZ(13, 2472,
122 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
123 IEEE80211_CHAN_NO_HT40PLUS),
124 CHAN2GHZ(14, 2484,
125 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
126 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
127 };
128
129 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
130 /* UNII-1 */
131 CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
132 CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
133 CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
134 CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
135 /* UNII-2 */
136 CHAN5GHZ(52,
137 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
138 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
139 CHAN5GHZ(56,
140 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
141 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
142 CHAN5GHZ(60,
143 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
144 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
145 CHAN5GHZ(64,
146 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
147 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
148 /* MID */
149 CHAN5GHZ(100,
150 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
151 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
152 CHAN5GHZ(104,
153 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
154 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
155 CHAN5GHZ(108,
156 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
157 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
158 CHAN5GHZ(112,
159 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
160 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
161 CHAN5GHZ(116,
162 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
163 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
164 CHAN5GHZ(120,
165 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
166 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
167 CHAN5GHZ(124,
168 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
169 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
170 CHAN5GHZ(128,
171 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
172 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
173 CHAN5GHZ(132,
174 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
175 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
176 CHAN5GHZ(136,
177 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
178 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
179 CHAN5GHZ(140,
180 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
181 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS |
182 IEEE80211_CHAN_NO_HT40MINUS),
183 /* UNII-3 */
184 CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
185 CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
186 CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
187 CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
188 CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
189 };
190
191 /*
192 * The rate table is used for both 2.4G and 5G rates. The
193 * latter being a subset as it does not support CCK rates.
194 */
195 static struct ieee80211_rate legacy_ratetable[] = {
196 RATE(10, 0),
197 RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
198 RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
199 RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
200 RATE(60, 0),
201 RATE(90, 0),
202 RATE(120, 0),
203 RATE(180, 0),
204 RATE(240, 0),
205 RATE(360, 0),
206 RATE(480, 0),
207 RATE(540, 0),
208 };
209
210 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
211 .band = IEEE80211_BAND_2GHZ,
212 .channels = brcms_2ghz_chantable,
213 .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
214 .bitrates = legacy_ratetable,
215 .n_bitrates = ARRAY_SIZE(legacy_ratetable),
216 .ht_cap = {
217 /* from include/linux/ieee80211.h */
218 .cap = IEEE80211_HT_CAP_GRN_FLD |
219 IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
220 .ht_supported = true,
221 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
222 .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
223 .mcs = {
224 /* placeholders for now */
225 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
226 .rx_highest = cpu_to_le16(500),
227 .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
228 }
229 };
230
231 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
232 .band = IEEE80211_BAND_5GHZ,
233 .channels = brcms_5ghz_nphy_chantable,
234 .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
235 .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
236 .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
237 BRCMS_LEGACY_5G_RATE_OFFSET,
238 .ht_cap = {
239 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
240 IEEE80211_HT_CAP_SGI_40,
241 .ht_supported = true,
242 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
243 .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
244 .mcs = {
245 /* placeholders for now */
246 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
247 .rx_highest = cpu_to_le16(500),
248 .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
249 }
250 };
251
252 /* flags the given rate in rateset as requested */
253 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
254 {
255 u32 i;
256
257 for (i = 0; i < rs->count; i++) {
258 if (rate != (rs->rates[i] & 0x7f))
259 continue;
260
261 if (is_br)
262 rs->rates[i] |= BRCMS_RATE_FLAG;
263 else
264 rs->rates[i] &= BRCMS_RATE_MASK;
265 return;
266 }
267 }
268
269 static void brcms_ops_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
270 {
271 struct brcms_info *wl = hw->priv;
272
273 spin_lock_bh(&wl->lock);
274 if (!wl->pub->up) {
275 wiphy_err(wl->wiphy, "ops->tx called while down\n");
276 kfree_skb(skb);
277 goto done;
278 }
279 brcms_c_sendpkt_mac80211(wl->wlc, skb, hw);
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->vendorid,
325 wl->wlc->hw->deviceid);
326 spin_unlock_bh(&wl->lock);
327 if (!status) {
328 wiphy_err(wl->wiphy,
329 "wl: brcms_ops_stop: chipmatch failed\n");
330 return;
331 }
332
333 /* put driver in down state */
334 spin_lock_bh(&wl->lock);
335 brcms_down(wl);
336 spin_unlock_bh(&wl->lock);
337 }
338
339 static int
340 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
341 {
342 struct brcms_info *wl = hw->priv;
343
344 /* Just STA for now */
345 if (vif->type != NL80211_IFTYPE_STATION) {
346 wiphy_err(hw->wiphy, "%s: Attempt to add type %d, only"
347 " STA for now\n", __func__, vif->type);
348 return -EOPNOTSUPP;
349 }
350
351 wl->mute_tx = false;
352 brcms_c_mute(wl->wlc, false);
353
354 return 0;
355 }
356
357 static void
358 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
359 {
360 }
361
362 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
363 {
364 struct ieee80211_conf *conf = &hw->conf;
365 struct brcms_info *wl = hw->priv;
366 int err = 0;
367 int new_int;
368 struct wiphy *wiphy = hw->wiphy;
369
370 spin_lock_bh(&wl->lock);
371 if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
372 brcms_c_set_beacon_listen_interval(wl->wlc,
373 conf->listen_interval);
374 }
375 if (changed & IEEE80211_CONF_CHANGE_MONITOR)
376 wiphy_err(wiphy, "%s: change monitor mode: %s (implement)\n",
377 __func__, conf->flags & IEEE80211_CONF_MONITOR ?
378 "true" : "false");
379 if (changed & IEEE80211_CONF_CHANGE_PS)
380 wiphy_err(wiphy, "%s: change power-save mode: %s (implement)\n",
381 __func__, conf->flags & IEEE80211_CONF_PS ?
382 "true" : "false");
383
384 if (changed & IEEE80211_CONF_CHANGE_POWER) {
385 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
386 if (err < 0) {
387 wiphy_err(wiphy, "%s: Error setting power_level\n",
388 __func__);
389 goto config_out;
390 }
391 new_int = brcms_c_get_tx_power(wl->wlc);
392 if (new_int != conf->power_level)
393 wiphy_err(wiphy, "%s: Power level req != actual, %d %d"
394 "\n", __func__, conf->power_level,
395 new_int);
396 }
397 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
398 if (conf->channel_type == NL80211_CHAN_HT20 ||
399 conf->channel_type == NL80211_CHAN_NO_HT)
400 err = brcms_c_set_channel(wl->wlc,
401 conf->channel->hw_value);
402 else
403 err = -ENOTSUPP;
404 }
405 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
406 err = brcms_c_set_rate_limit(wl->wlc,
407 conf->short_frame_max_tx_count,
408 conf->long_frame_max_tx_count);
409
410 config_out:
411 spin_unlock_bh(&wl->lock);
412 return err;
413 }
414
415 static void
416 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
417 struct ieee80211_vif *vif,
418 struct ieee80211_bss_conf *info, u32 changed)
419 {
420 struct brcms_info *wl = hw->priv;
421 struct wiphy *wiphy = hw->wiphy;
422
423 if (changed & BSS_CHANGED_ASSOC) {
424 /* association status changed (associated/disassociated)
425 * also implies a change in the AID.
426 */
427 wiphy_err(wiphy, "%s: %s: %sassociated\n", KBUILD_MODNAME,
428 __func__, info->assoc ? "" : "dis");
429 spin_lock_bh(&wl->lock);
430 brcms_c_associate_upd(wl->wlc, info->assoc);
431 spin_unlock_bh(&wl->lock);
432 }
433 if (changed & BSS_CHANGED_ERP_SLOT) {
434 s8 val;
435
436 /* slot timing changed */
437 if (info->use_short_slot)
438 val = 1;
439 else
440 val = 0;
441 spin_lock_bh(&wl->lock);
442 brcms_c_set_shortslot_override(wl->wlc, val);
443 spin_unlock_bh(&wl->lock);
444 }
445
446 if (changed & BSS_CHANGED_HT) {
447 /* 802.11n parameters changed */
448 u16 mode = info->ht_operation_mode;
449
450 spin_lock_bh(&wl->lock);
451 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
452 mode & IEEE80211_HT_OP_MODE_PROTECTION);
453 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
454 mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
455 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
456 mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
457 spin_unlock_bh(&wl->lock);
458 }
459 if (changed & BSS_CHANGED_BASIC_RATES) {
460 struct ieee80211_supported_band *bi;
461 u32 br_mask, i;
462 u16 rate;
463 struct brcm_rateset rs;
464 int error;
465
466 /* retrieve the current rates */
467 spin_lock_bh(&wl->lock);
468 brcms_c_get_current_rateset(wl->wlc, &rs);
469 spin_unlock_bh(&wl->lock);
470
471 br_mask = info->basic_rates;
472 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
473 for (i = 0; i < bi->n_bitrates; i++) {
474 /* convert to internal rate value */
475 rate = (bi->bitrates[i].bitrate << 1) / 10;
476
477 /* set/clear basic rate flag */
478 brcms_set_basic_rate(&rs, rate, br_mask & 1);
479 br_mask >>= 1;
480 }
481
482 /* update the rate set */
483 spin_lock_bh(&wl->lock);
484 error = brcms_c_set_rateset(wl->wlc, &rs);
485 spin_unlock_bh(&wl->lock);
486 if (error)
487 wiphy_err(wiphy, "changing basic rates failed: %d\n",
488 error);
489 }
490 if (changed & BSS_CHANGED_BEACON_INT) {
491 /* Beacon interval changed */
492 spin_lock_bh(&wl->lock);
493 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
494 spin_unlock_bh(&wl->lock);
495 }
496 if (changed & BSS_CHANGED_BSSID) {
497 /* BSSID changed, for whatever reason (IBSS and managed mode) */
498 spin_lock_bh(&wl->lock);
499 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
500 spin_unlock_bh(&wl->lock);
501 }
502 if (changed & BSS_CHANGED_BEACON)
503 /* Beacon data changed, retrieve new beacon (beaconing modes) */
504 wiphy_err(wiphy, "%s: beacon changed\n", __func__);
505
506 if (changed & BSS_CHANGED_BEACON_ENABLED) {
507 /* Beaconing should be enabled/disabled (beaconing modes) */
508 wiphy_err(wiphy, "%s: Beacon enabled: %s\n", __func__,
509 info->enable_beacon ? "true" : "false");
510 }
511
512 if (changed & BSS_CHANGED_CQM) {
513 /* Connection quality monitor config changed */
514 wiphy_err(wiphy, "%s: cqm change: threshold %d, hys %d "
515 " (implement)\n", __func__, info->cqm_rssi_thold,
516 info->cqm_rssi_hyst);
517 }
518
519 if (changed & BSS_CHANGED_IBSS) {
520 /* IBSS join status changed */
521 wiphy_err(wiphy, "%s: IBSS joined: %s (implement)\n", __func__,
522 info->ibss_joined ? "true" : "false");
523 }
524
525 if (changed & BSS_CHANGED_ARP_FILTER) {
526 /* Hardware ARP filter address list or state changed */
527 wiphy_err(wiphy, "%s: arp filtering: enabled %s, count %d"
528 " (implement)\n", __func__, info->arp_filter_enabled ?
529 "true" : "false", info->arp_addr_cnt);
530 }
531
532 if (changed & BSS_CHANGED_QOS) {
533 /*
534 * QoS for this association was enabled/disabled.
535 * Note that it is only ever disabled for station mode.
536 */
537 wiphy_err(wiphy, "%s: qos enabled: %s (implement)\n", __func__,
538 info->qos ? "true" : "false");
539 }
540 return;
541 }
542
543 static void
544 brcms_ops_configure_filter(struct ieee80211_hw *hw,
545 unsigned int changed_flags,
546 unsigned int *total_flags, u64 multicast)
547 {
548 struct brcms_info *wl = hw->priv;
549 struct wiphy *wiphy = hw->wiphy;
550
551 changed_flags &= MAC_FILTERS;
552 *total_flags &= MAC_FILTERS;
553 if (changed_flags & FIF_PROMISC_IN_BSS)
554 wiphy_err(wiphy, "FIF_PROMISC_IN_BSS\n");
555 if (changed_flags & FIF_ALLMULTI)
556 wiphy_err(wiphy, "FIF_ALLMULTI\n");
557 if (changed_flags & FIF_FCSFAIL)
558 wiphy_err(wiphy, "FIF_FCSFAIL\n");
559 if (changed_flags & FIF_PLCPFAIL)
560 wiphy_err(wiphy, "FIF_PLCPFAIL\n");
561 if (changed_flags & FIF_CONTROL)
562 wiphy_err(wiphy, "FIF_CONTROL\n");
563 if (changed_flags & FIF_OTHER_BSS)
564 wiphy_err(wiphy, "FIF_OTHER_BSS\n");
565 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
566 spin_lock_bh(&wl->lock);
567 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
568 wl->pub->mac80211_state |= MAC80211_PROMISC_BCNS;
569 brcms_c_mac_bcn_promisc_change(wl->wlc, 1);
570 } else {
571 brcms_c_mac_bcn_promisc_change(wl->wlc, 0);
572 wl->pub->mac80211_state &= ~MAC80211_PROMISC_BCNS;
573 }
574 spin_unlock_bh(&wl->lock);
575 }
576 return;
577 }
578
579 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
580 {
581 struct brcms_info *wl = hw->priv;
582 spin_lock_bh(&wl->lock);
583 brcms_c_scan_start(wl->wlc);
584 spin_unlock_bh(&wl->lock);
585 return;
586 }
587
588 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
589 {
590 struct brcms_info *wl = hw->priv;
591 spin_lock_bh(&wl->lock);
592 brcms_c_scan_stop(wl->wlc);
593 spin_unlock_bh(&wl->lock);
594 return;
595 }
596
597 static int
598 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
599 const struct ieee80211_tx_queue_params *params)
600 {
601 struct brcms_info *wl = hw->priv;
602
603 spin_lock_bh(&wl->lock);
604 brcms_c_wme_setparams(wl->wlc, queue, params, true);
605 spin_unlock_bh(&wl->lock);
606
607 return 0;
608 }
609
610 static int
611 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
612 struct ieee80211_sta *sta)
613 {
614 struct brcms_info *wl = hw->priv;
615 struct scb *scb = &wl->wlc->pri_scb;
616
617 brcms_c_init_scb(scb);
618
619 wl->pub->global_ampdu = &(scb->scb_ampdu);
620 wl->pub->global_ampdu->scb = scb;
621 wl->pub->global_ampdu->max_pdu = 16;
622
623 /*
624 * minstrel_ht initiates addBA on our behalf by calling
625 * ieee80211_start_tx_ba_session()
626 */
627 return 0;
628 }
629
630 static int
631 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
632 struct ieee80211_vif *vif,
633 enum ieee80211_ampdu_mlme_action action,
634 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
635 u8 buf_size)
636 {
637 struct brcms_info *wl = hw->priv;
638 struct scb *scb = &wl->wlc->pri_scb;
639 int status;
640
641 if (WARN_ON(scb->magic != SCB_MAGIC))
642 return -EIDRM;
643 switch (action) {
644 case IEEE80211_AMPDU_RX_START:
645 break;
646 case IEEE80211_AMPDU_RX_STOP:
647 break;
648 case IEEE80211_AMPDU_TX_START:
649 spin_lock_bh(&wl->lock);
650 status = brcms_c_aggregatable(wl->wlc, tid);
651 spin_unlock_bh(&wl->lock);
652 if (!status) {
653 wiphy_err(wl->wiphy, "START: tid %d is not agg\'able\n",
654 tid);
655 return -EINVAL;
656 }
657 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
658 break;
659
660 case IEEE80211_AMPDU_TX_STOP:
661 spin_lock_bh(&wl->lock);
662 brcms_c_ampdu_flush(wl->wlc, sta, tid);
663 spin_unlock_bh(&wl->lock);
664 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
665 break;
666 case IEEE80211_AMPDU_TX_OPERATIONAL:
667 /*
668 * BA window size from ADDBA response ('buf_size') defines how
669 * many outstanding MPDUs are allowed for the BA stream by
670 * recipient and traffic class. 'ampdu_factor' gives maximum
671 * AMPDU size.
672 */
673 spin_lock_bh(&wl->lock);
674 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
675 (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
676 sta->ht_cap.ampdu_factor)) - 1);
677 spin_unlock_bh(&wl->lock);
678 /* Power save wakeup */
679 break;
680 default:
681 wiphy_err(wl->wiphy, "%s: Invalid command, ignoring\n",
682 __func__);
683 }
684
685 return 0;
686 }
687
688 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
689 {
690 struct brcms_info *wl = hw->priv;
691 bool blocked;
692
693 spin_lock_bh(&wl->lock);
694 blocked = brcms_c_check_radio_disabled(wl->wlc);
695 spin_unlock_bh(&wl->lock);
696
697 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
698 }
699
700 static void brcms_ops_flush(struct ieee80211_hw *hw, bool drop)
701 {
702 struct brcms_info *wl = hw->priv;
703
704 no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
705
706 /* wait for packet queue and dma fifos to run empty */
707 spin_lock_bh(&wl->lock);
708 brcms_c_wait_for_tx_completion(wl->wlc, drop);
709 spin_unlock_bh(&wl->lock);
710 }
711
712 static const struct ieee80211_ops brcms_ops = {
713 .tx = brcms_ops_tx,
714 .start = brcms_ops_start,
715 .stop = brcms_ops_stop,
716 .add_interface = brcms_ops_add_interface,
717 .remove_interface = brcms_ops_remove_interface,
718 .config = brcms_ops_config,
719 .bss_info_changed = brcms_ops_bss_info_changed,
720 .configure_filter = brcms_ops_configure_filter,
721 .sw_scan_start = brcms_ops_sw_scan_start,
722 .sw_scan_complete = brcms_ops_sw_scan_complete,
723 .conf_tx = brcms_ops_conf_tx,
724 .sta_add = brcms_ops_sta_add,
725 .ampdu_action = brcms_ops_ampdu_action,
726 .rfkill_poll = brcms_ops_rfkill_poll,
727 .flush = brcms_ops_flush,
728 };
729
730 /*
731 * is called in brcms_pci_probe() context, therefore no locking required.
732 */
733 static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
734 {
735 return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
736 }
737
738 void brcms_dpc(unsigned long data)
739 {
740 struct brcms_info *wl;
741
742 wl = (struct brcms_info *) data;
743
744 spin_lock_bh(&wl->lock);
745
746 /* call the common second level interrupt handler */
747 if (wl->pub->up) {
748 if (wl->resched) {
749 unsigned long flags;
750
751 spin_lock_irqsave(&wl->isr_lock, flags);
752 brcms_c_intrsupd(wl->wlc);
753 spin_unlock_irqrestore(&wl->isr_lock, flags);
754 }
755
756 wl->resched = brcms_c_dpc(wl->wlc, true);
757 }
758
759 /* brcms_c_dpc() may bring the driver down */
760 if (!wl->pub->up)
761 goto done;
762
763 /* re-schedule dpc */
764 if (wl->resched)
765 tasklet_schedule(&wl->tasklet);
766 else
767 /* re-enable interrupts */
768 brcms_intrson(wl);
769
770 done:
771 spin_unlock_bh(&wl->lock);
772 }
773
774 /*
775 * Precondition: Since this function is called in brcms_pci_probe() context,
776 * no locking is required.
777 */
778 static int brcms_request_fw(struct brcms_info *wl, struct pci_dev *pdev)
779 {
780 int status;
781 struct device *device = &pdev->dev;
782 char fw_name[100];
783 int i;
784
785 memset(&wl->fw, 0, sizeof(struct brcms_firmware));
786 for (i = 0; i < MAX_FW_IMAGES; i++) {
787 if (brcms_firmwares[i] == NULL)
788 break;
789 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
790 UCODE_LOADER_API_VER);
791 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
792 if (status) {
793 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
794 KBUILD_MODNAME, fw_name);
795 return status;
796 }
797 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
798 UCODE_LOADER_API_VER);
799 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
800 if (status) {
801 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
802 KBUILD_MODNAME, fw_name);
803 return status;
804 }
805 wl->fw.hdr_num_entries[i] =
806 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
807 }
808 wl->fw.fw_cnt = i;
809 return brcms_ucode_data_init(wl, &wl->ucode);
810 }
811
812 /*
813 * Precondition: Since this function is called in brcms_pci_probe() context,
814 * no locking is required.
815 */
816 static void brcms_release_fw(struct brcms_info *wl)
817 {
818 int i;
819 for (i = 0; i < MAX_FW_IMAGES; i++) {
820 release_firmware(wl->fw.fw_bin[i]);
821 release_firmware(wl->fw.fw_hdr[i]);
822 }
823 }
824
825 /**
826 * This function frees the WL per-device resources.
827 *
828 * This function frees resources owned by the WL device pointed to
829 * by the wl parameter.
830 *
831 * precondition: can both be called locked and unlocked
832 *
833 */
834 static void brcms_free(struct brcms_info *wl)
835 {
836 struct brcms_timer *t, *next;
837
838 /* free ucode data */
839 if (wl->fw.fw_cnt)
840 brcms_ucode_data_free(&wl->ucode);
841 if (wl->irq)
842 free_irq(wl->irq, wl);
843
844 /* kill dpc */
845 tasklet_kill(&wl->tasklet);
846
847 if (wl->pub)
848 brcms_c_module_unregister(wl->pub, "linux", wl);
849
850 /* free common resources */
851 if (wl->wlc) {
852 brcms_c_detach(wl->wlc);
853 wl->wlc = NULL;
854 wl->pub = NULL;
855 }
856
857 /* virtual interface deletion is deferred so we cannot spinwait */
858
859 /* wait for all pending callbacks to complete */
860 while (atomic_read(&wl->callbacks) > 0)
861 schedule();
862
863 /* free timers */
864 for (t = wl->timers; t; t = next) {
865 next = t->next;
866 #ifdef BCMDBG
867 kfree(t->name);
868 #endif
869 kfree(t);
870 }
871
872 /*
873 * unregister_netdev() calls get_stats() which may read chip
874 * registers so we cannot unmap the chip registers until
875 * after calling unregister_netdev() .
876 */
877 if (wl->regsva)
878 iounmap(wl->regsva);
879
880 wl->regsva = NULL;
881 }
882
883 /*
884 * called from both kernel as from this kernel module (error flow on attach)
885 * precondition: perimeter lock is not acquired.
886 */
887 static void brcms_remove(struct pci_dev *pdev)
888 {
889 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
890 struct brcms_info *wl = hw->priv;
891
892 if (wl->wlc) {
893 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
894 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
895 ieee80211_unregister_hw(hw);
896 }
897 pci_disable_device(pdev);
898
899 brcms_free(wl);
900
901 pci_set_drvdata(pdev, NULL);
902 ieee80211_free_hw(hw);
903 }
904
905 static irqreturn_t brcms_isr(int irq, void *dev_id)
906 {
907 struct brcms_info *wl;
908 bool ours, wantdpc;
909
910 wl = (struct brcms_info *) dev_id;
911
912 spin_lock(&wl->isr_lock);
913
914 /* call common first level interrupt handler */
915 ours = brcms_c_isr(wl->wlc, &wantdpc);
916 if (ours) {
917 /* if more to do... */
918 if (wantdpc) {
919
920 /* ...and call the second level interrupt handler */
921 /* schedule dpc */
922 tasklet_schedule(&wl->tasklet);
923 }
924 }
925
926 spin_unlock(&wl->isr_lock);
927
928 return IRQ_RETVAL(ours);
929 }
930
931 /*
932 * is called in brcms_pci_probe() context, therefore no locking required.
933 */
934 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
935 {
936 struct brcms_info *wl = hw->priv;
937 struct brcms_c_info *wlc = wl->wlc;
938 struct ieee80211_supported_band *band;
939 int has_5g = 0;
940 u16 phy_type;
941
942 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
943 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
944
945 phy_type = brcms_c_get_phy_type(wl->wlc, 0);
946 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
947 band = &wlc->bandstate[BAND_2G_INDEX]->band;
948 *band = brcms_band_2GHz_nphy_template;
949 if (phy_type == PHY_TYPE_LCN) {
950 /* Single stream */
951 band->ht_cap.mcs.rx_mask[1] = 0;
952 band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
953 }
954 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
955 } else {
956 return -EPERM;
957 }
958
959 /* Assume all bands use the same phy. True for 11n devices. */
960 if (wl->pub->_nbands > 1) {
961 has_5g++;
962 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
963 band = &wlc->bandstate[BAND_5G_INDEX]->band;
964 *band = brcms_band_5GHz_nphy_template;
965 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
966 } else {
967 return -EPERM;
968 }
969 }
970 return 0;
971 }
972
973 /*
974 * is called in brcms_pci_probe() context, therefore no locking required.
975 */
976 static int ieee_hw_init(struct ieee80211_hw *hw)
977 {
978 hw->flags = IEEE80211_HW_SIGNAL_DBM
979 /* | IEEE80211_HW_CONNECTION_MONITOR What is this? */
980 | IEEE80211_HW_REPORTS_TX_ACK_STATUS
981 | IEEE80211_HW_AMPDU_AGGREGATION;
982
983 hw->extra_tx_headroom = brcms_c_get_header_len();
984 hw->queues = N_TX_QUEUES;
985 hw->max_rates = 2; /* Primary rate and 1 fallback rate */
986
987 /* channel change time is dependent on chip and band */
988 hw->channel_change_time = 7 * 1000;
989 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
990
991 hw->rate_control_algorithm = "minstrel_ht";
992
993 hw->sta_data_size = 0;
994 return ieee_hw_rate_init(hw);
995 }
996
997 /**
998 * attach to the WL device.
999 *
1000 * Attach to the WL device identified by vendor and device parameters.
1001 * regs is a host accessible memory address pointing to WL device registers.
1002 *
1003 * brcms_attach is not defined as static because in the case where no bus
1004 * is defined, wl_attach will never be called, and thus, gcc will issue
1005 * a warning that this function is defined but not used if we declare
1006 * it as static.
1007 *
1008 *
1009 * is called in brcms_pci_probe() context, therefore no locking required.
1010 */
1011 static struct brcms_info *brcms_attach(u16 vendor, u16 device,
1012 resource_size_t regs,
1013 struct pci_dev *btparam, uint irq)
1014 {
1015 struct brcms_info *wl = NULL;
1016 int unit, err;
1017 struct ieee80211_hw *hw;
1018 u8 perm[ETH_ALEN];
1019
1020 unit = n_adapters_found;
1021 err = 0;
1022
1023 if (unit < 0)
1024 return NULL;
1025
1026 /* allocate private info */
1027 hw = pci_get_drvdata(btparam); /* btparam == pdev */
1028 if (hw != NULL)
1029 wl = hw->priv;
1030 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1031 return NULL;
1032 wl->wiphy = hw->wiphy;
1033
1034 atomic_set(&wl->callbacks, 0);
1035
1036 /* setup the bottom half handler */
1037 tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1038
1039 wl->regsva = ioremap_nocache(regs, PCI_BAR0_WINSZ);
1040 if (wl->regsva == NULL) {
1041 wiphy_err(wl->wiphy, "wl%d: ioremap() failed\n", unit);
1042 goto fail;
1043 }
1044 spin_lock_init(&wl->lock);
1045 spin_lock_init(&wl->isr_lock);
1046
1047 /* prepare ucode */
1048 if (brcms_request_fw(wl, btparam) < 0) {
1049 wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
1050 "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
1051 brcms_release_fw(wl);
1052 brcms_remove(btparam);
1053 return NULL;
1054 }
1055
1056 /* common load-time initialization */
1057 wl->wlc = brcms_c_attach(wl, vendor, device, unit, false,
1058 wl->regsva, btparam, &err);
1059 brcms_release_fw(wl);
1060 if (!wl->wlc) {
1061 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1062 KBUILD_MODNAME, err);
1063 goto fail;
1064 }
1065 wl->pub = brcms_c_pub(wl->wlc);
1066
1067 wl->pub->ieee_hw = hw;
1068
1069 /* register our interrupt handler */
1070 if (request_irq(irq, brcms_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) {
1071 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1072 goto fail;
1073 }
1074 wl->irq = irq;
1075
1076 /* register module */
1077 brcms_c_module_register(wl->pub, "linux", wl, NULL);
1078
1079 if (ieee_hw_init(hw)) {
1080 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1081 __func__);
1082 goto fail;
1083 }
1084
1085 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1086 if (WARN_ON(!is_valid_ether_addr(perm)))
1087 goto fail;
1088 SET_IEEE80211_PERM_ADDR(hw, perm);
1089
1090 err = ieee80211_register_hw(hw);
1091 if (err)
1092 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1093 "%d\n", __func__, err);
1094
1095 if (wl->pub->srom_ccode[0])
1096 err = brcms_set_hint(wl, wl->pub->srom_ccode);
1097 else
1098 err = brcms_set_hint(wl, "US");
1099 if (err)
1100 wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
1101 __func__, err);
1102
1103 n_adapters_found++;
1104 return wl;
1105
1106 fail:
1107 brcms_free(wl);
1108 return NULL;
1109 }
1110
1111
1112
1113 /**
1114 * determines if a device is a WL device, and if so, attaches it.
1115 *
1116 * This function determines if a device pointed to by pdev is a WL device,
1117 * and if so, performs a brcms_attach() on it.
1118 *
1119 * Perimeter lock is initialized in the course of this function.
1120 */
1121 static int __devinit
1122 brcms_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1123 {
1124 int rc;
1125 struct brcms_info *wl;
1126 struct ieee80211_hw *hw;
1127 u32 val;
1128
1129 dev_info(&pdev->dev, "bus %d slot %d func %d irq %d\n",
1130 pdev->bus->number, PCI_SLOT(pdev->devfn),
1131 PCI_FUNC(pdev->devfn), pdev->irq);
1132
1133 if ((pdev->vendor != PCI_VENDOR_ID_BROADCOM) ||
1134 ((pdev->device != 0x0576) &&
1135 ((pdev->device & 0xff00) != 0x4300) &&
1136 ((pdev->device & 0xff00) != 0x4700) &&
1137 ((pdev->device < 43000) || (pdev->device > 43999))))
1138 return -ENODEV;
1139
1140 rc = pci_enable_device(pdev);
1141 if (rc) {
1142 pr_err("%s: Cannot enable device %d-%d_%d\n",
1143 __func__, pdev->bus->number, PCI_SLOT(pdev->devfn),
1144 PCI_FUNC(pdev->devfn));
1145 return -ENODEV;
1146 }
1147 pci_set_master(pdev);
1148
1149 pci_read_config_dword(pdev, 0x40, &val);
1150 if ((val & 0x0000ff00) != 0)
1151 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1152
1153 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1154 if (!hw) {
1155 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1156 return -ENOMEM;
1157 }
1158
1159 SET_IEEE80211_DEV(hw, &pdev->dev);
1160
1161 pci_set_drvdata(pdev, hw);
1162
1163 memset(hw->priv, 0, sizeof(*wl));
1164
1165 wl = brcms_attach(pdev->vendor, pdev->device,
1166 pci_resource_start(pdev, 0), pdev,
1167 pdev->irq);
1168
1169 if (!wl) {
1170 pr_err("%s: %s: brcms_attach failed!\n", KBUILD_MODNAME,
1171 __func__);
1172 return -ENODEV;
1173 }
1174 return 0;
1175 }
1176
1177 static int brcms_suspend(struct pci_dev *pdev, pm_message_t state)
1178 {
1179 struct brcms_info *wl;
1180 struct ieee80211_hw *hw;
1181
1182 hw = pci_get_drvdata(pdev);
1183 wl = hw->priv;
1184 if (!wl) {
1185 wiphy_err(wl->wiphy,
1186 "brcms_suspend: pci_get_drvdata failed\n");
1187 return -ENODEV;
1188 }
1189
1190 /* only need to flag hw is down for proper resume */
1191 spin_lock_bh(&wl->lock);
1192 wl->pub->hw_up = false;
1193 spin_unlock_bh(&wl->lock);
1194
1195 pci_save_state(pdev);
1196 pci_disable_device(pdev);
1197 return pci_set_power_state(pdev, PCI_D3hot);
1198 }
1199
1200 static int brcms_resume(struct pci_dev *pdev)
1201 {
1202 struct brcms_info *wl;
1203 struct ieee80211_hw *hw;
1204 int err = 0;
1205 u32 val;
1206
1207 hw = pci_get_drvdata(pdev);
1208 wl = hw->priv;
1209 if (!wl) {
1210 wiphy_err(wl->wiphy,
1211 "wl: brcms_resume: pci_get_drvdata failed\n");
1212 return -ENODEV;
1213 }
1214
1215 err = pci_set_power_state(pdev, PCI_D0);
1216 if (err)
1217 return err;
1218
1219 pci_restore_state(pdev);
1220
1221 err = pci_enable_device(pdev);
1222 if (err)
1223 return err;
1224
1225 pci_set_master(pdev);
1226
1227 pci_read_config_dword(pdev, 0x40, &val);
1228 if ((val & 0x0000ff00) != 0)
1229 pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
1230
1231 /*
1232 * done. driver will be put in up state
1233 * in brcms_ops_add_interface() call.
1234 */
1235 return err;
1236 }
1237
1238 static struct pci_driver brcms_pci_driver = {
1239 .name = KBUILD_MODNAME,
1240 .probe = brcms_pci_probe,
1241 .suspend = brcms_suspend,
1242 .resume = brcms_resume,
1243 .remove = __devexit_p(brcms_remove),
1244 .id_table = brcms_pci_id_table,
1245 };
1246
1247 /**
1248 * This is the main entry point for the WL driver.
1249 *
1250 * This function determines if a device pointed to by pdev is a WL device,
1251 * and if so, performs a brcms_attach() on it.
1252 *
1253 */
1254 static int __init brcms_module_init(void)
1255 {
1256 int error = -ENODEV;
1257
1258 #ifdef BCMDBG
1259 if (msglevel != 0xdeadbeef)
1260 brcm_msg_level = msglevel;
1261 #endif /* BCMDBG */
1262
1263 error = pci_register_driver(&brcms_pci_driver);
1264 if (!error)
1265 return 0;
1266
1267
1268
1269 return error;
1270 }
1271
1272 /**
1273 * This function unloads the WL driver from the system.
1274 *
1275 * This function unconditionally unloads the WL driver module from the
1276 * system.
1277 *
1278 */
1279 static void __exit brcms_module_exit(void)
1280 {
1281 pci_unregister_driver(&brcms_pci_driver);
1282
1283 }
1284
1285 module_init(brcms_module_init);
1286 module_exit(brcms_module_exit);
1287
1288 /*
1289 * precondition: perimeter lock has been acquired
1290 */
1291 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1292 bool state, int prio)
1293 {
1294 wiphy_err(wl->wiphy, "Shouldn't be here %s\n", __func__);
1295 }
1296
1297 /*
1298 * precondition: perimeter lock has been acquired
1299 */
1300 void brcms_init(struct brcms_info *wl)
1301 {
1302 BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1303 brcms_reset(wl);
1304 brcms_c_init(wl->wlc, wl->mute_tx);
1305 }
1306
1307 /*
1308 * precondition: perimeter lock has been acquired
1309 */
1310 uint brcms_reset(struct brcms_info *wl)
1311 {
1312 BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
1313 brcms_c_reset(wl->wlc);
1314
1315 /* dpc will not be rescheduled */
1316 wl->resched = 0;
1317
1318 return 0;
1319 }
1320
1321 void brcms_fatal_error(struct brcms_info *wl)
1322 {
1323 wiphy_err(wl->wlc->wiphy, "wl%d: fatal error, reinitializing\n",
1324 wl->wlc->pub->unit);
1325 brcms_reset(wl);
1326 ieee80211_restart_hw(wl->pub->ieee_hw);
1327 }
1328
1329 /*
1330 * These are interrupt on/off entry points. Disable interrupts
1331 * during interrupt state transition.
1332 */
1333 void brcms_intrson(struct brcms_info *wl)
1334 {
1335 unsigned long flags;
1336
1337 spin_lock_irqsave(&wl->isr_lock, flags);
1338 brcms_c_intrson(wl->wlc);
1339 spin_unlock_irqrestore(&wl->isr_lock, flags);
1340 }
1341
1342 u32 brcms_intrsoff(struct brcms_info *wl)
1343 {
1344 unsigned long flags;
1345 u32 status;
1346
1347 spin_lock_irqsave(&wl->isr_lock, flags);
1348 status = brcms_c_intrsoff(wl->wlc);
1349 spin_unlock_irqrestore(&wl->isr_lock, flags);
1350 return status;
1351 }
1352
1353 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1354 {
1355 unsigned long flags;
1356
1357 spin_lock_irqsave(&wl->isr_lock, flags);
1358 brcms_c_intrsrestore(wl->wlc, macintmask);
1359 spin_unlock_irqrestore(&wl->isr_lock, flags);
1360 }
1361
1362 /*
1363 * precondition: perimeter lock has been acquired
1364 */
1365 int brcms_up(struct brcms_info *wl)
1366 {
1367 int error = 0;
1368
1369 if (wl->pub->up)
1370 return 0;
1371
1372 error = brcms_c_up(wl->wlc);
1373
1374 return error;
1375 }
1376
1377 /*
1378 * precondition: perimeter lock has been acquired
1379 */
1380 void brcms_down(struct brcms_info *wl)
1381 {
1382 uint callbacks, ret_val = 0;
1383
1384 /* call common down function */
1385 ret_val = brcms_c_down(wl->wlc);
1386 callbacks = atomic_read(&wl->callbacks) - ret_val;
1387
1388 /* wait for down callbacks to complete */
1389 spin_unlock_bh(&wl->lock);
1390
1391 /* For HIGH_only driver, it's important to actually schedule other work,
1392 * not just spin wait since everything runs at schedule level
1393 */
1394 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1395
1396 spin_lock_bh(&wl->lock);
1397 }
1398
1399 /*
1400 * precondition: perimeter lock is not acquired
1401 */
1402 static void _brcms_timer(struct work_struct *work)
1403 {
1404 struct brcms_timer *t = container_of(work, struct brcms_timer,
1405 dly_wrk.work);
1406
1407 spin_lock_bh(&t->wl->lock);
1408
1409 if (t->set) {
1410 if (t->periodic) {
1411 atomic_inc(&t->wl->callbacks);
1412 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1413 &t->dly_wrk,
1414 msecs_to_jiffies(t->ms));
1415 } else {
1416 t->set = false;
1417 }
1418
1419 t->fn(t->arg);
1420 }
1421
1422 atomic_dec(&t->wl->callbacks);
1423
1424 spin_unlock_bh(&t->wl->lock);
1425 }
1426
1427 /*
1428 * Adds a timer to the list. Caller supplies a timer function.
1429 * Is called from wlc.
1430 *
1431 * precondition: perimeter lock has been acquired
1432 */
1433 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1434 void (*fn) (void *arg),
1435 void *arg, const char *name)
1436 {
1437 struct brcms_timer *t;
1438
1439 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1440 if (!t)
1441 return NULL;
1442
1443 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1444 t->wl = wl;
1445 t->fn = fn;
1446 t->arg = arg;
1447 t->next = wl->timers;
1448 wl->timers = t;
1449
1450 #ifdef BCMDBG
1451 t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1452 if (t->name)
1453 strcpy(t->name, name);
1454 #endif
1455
1456 return t;
1457 }
1458
1459 /*
1460 * adds only the kernel timer since it's going to be more accurate
1461 * as well as it's easier to make it periodic
1462 *
1463 * precondition: perimeter lock has been acquired
1464 */
1465 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1466 {
1467 struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1468
1469 #ifdef BCMDBG
1470 if (t->set)
1471 wiphy_err(hw->wiphy, "%s: Already set. Name: %s, per %d\n",
1472 __func__, t->name, periodic);
1473 #endif
1474 t->ms = ms;
1475 t->periodic = (bool) periodic;
1476 t->set = true;
1477
1478 atomic_inc(&t->wl->callbacks);
1479
1480 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1481 }
1482
1483 /*
1484 * return true if timer successfully deleted, false if still pending
1485 *
1486 * precondition: perimeter lock has been acquired
1487 */
1488 bool brcms_del_timer(struct brcms_timer *t)
1489 {
1490 if (t->set) {
1491 t->set = false;
1492 if (!cancel_delayed_work(&t->dly_wrk))
1493 return false;
1494
1495 atomic_dec(&t->wl->callbacks);
1496 }
1497
1498 return true;
1499 }
1500
1501 /*
1502 * precondition: perimeter lock has been acquired
1503 */
1504 void brcms_free_timer(struct brcms_timer *t)
1505 {
1506 struct brcms_info *wl = t->wl;
1507 struct brcms_timer *tmp;
1508
1509 /* delete the timer in case it is active */
1510 brcms_del_timer(t);
1511
1512 if (wl->timers == t) {
1513 wl->timers = wl->timers->next;
1514 #ifdef BCMDBG
1515 kfree(t->name);
1516 #endif
1517 kfree(t);
1518 return;
1519
1520 }
1521
1522 tmp = wl->timers;
1523 while (tmp) {
1524 if (tmp->next == t) {
1525 tmp->next = t->next;
1526 #ifdef BCMDBG
1527 kfree(t->name);
1528 #endif
1529 kfree(t);
1530 return;
1531 }
1532 tmp = tmp->next;
1533 }
1534
1535 }
1536
1537 /*
1538 * precondition: perimeter lock has been acquired
1539 */
1540 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1541 {
1542 int i, entry;
1543 const u8 *pdata;
1544 struct firmware_hdr *hdr;
1545 for (i = 0; i < wl->fw.fw_cnt; i++) {
1546 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1547 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1548 entry++, hdr++) {
1549 u32 len = le32_to_cpu(hdr->len);
1550 if (le32_to_cpu(hdr->idx) == idx) {
1551 pdata = wl->fw.fw_bin[i]->data +
1552 le32_to_cpu(hdr->offset);
1553 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1554 if (*pbuf == NULL)
1555 goto fail;
1556
1557 return 0;
1558 }
1559 }
1560 }
1561 wiphy_err(wl->wiphy, "ERROR: ucode buf tag:%d can not be found!\n",
1562 idx);
1563 *pbuf = NULL;
1564 fail:
1565 return -ENODATA;
1566 }
1567
1568 /*
1569 * Precondition: Since this function is called in brcms_pci_probe() context,
1570 * no locking is required.
1571 */
1572 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1573 {
1574 int i, entry;
1575 const u8 *pdata;
1576 struct firmware_hdr *hdr;
1577 for (i = 0; i < wl->fw.fw_cnt; i++) {
1578 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1579 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1580 entry++, hdr++) {
1581 if (le32_to_cpu(hdr->idx) == idx) {
1582 pdata = wl->fw.fw_bin[i]->data +
1583 le32_to_cpu(hdr->offset);
1584 if (le32_to_cpu(hdr->len) != 4) {
1585 wiphy_err(wl->wiphy,
1586 "ERROR: fw hdr len\n");
1587 return -ENOMSG;
1588 }
1589 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1590 return 0;
1591 }
1592 }
1593 }
1594 wiphy_err(wl->wiphy, "ERROR: ucode tag:%d can not be found!\n", idx);
1595 return -ENOMSG;
1596 }
1597
1598 /*
1599 * precondition: can both be called locked and unlocked
1600 */
1601 void brcms_ucode_free_buf(void *p)
1602 {
1603 kfree(p);
1604 }
1605
1606 /*
1607 * checks validity of all firmware images loaded from user space
1608 *
1609 * Precondition: Since this function is called in brcms_pci_probe() context,
1610 * no locking is required.
1611 */
1612 int brcms_check_firmwares(struct brcms_info *wl)
1613 {
1614 int i;
1615 int entry;
1616 int rc = 0;
1617 const struct firmware *fw;
1618 const struct firmware *fw_hdr;
1619 struct firmware_hdr *ucode_hdr;
1620 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1621 fw = wl->fw.fw_bin[i];
1622 fw_hdr = wl->fw.fw_hdr[i];
1623 if (fw == NULL && fw_hdr == NULL) {
1624 break;
1625 } else if (fw == NULL || fw_hdr == NULL) {
1626 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1627 __func__);
1628 rc = -EBADF;
1629 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1630 wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1631 "size %zu/%zu\n", __func__, fw_hdr->size,
1632 sizeof(struct firmware_hdr));
1633 rc = -EBADF;
1634 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1635 wiphy_err(wl->wiphy, "%s: out of bounds fw file size "
1636 "%zu\n", __func__, fw->size);
1637 rc = -EBADF;
1638 } else {
1639 /* check if ucode section overruns firmware image */
1640 ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1641 for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1642 !rc; entry++, ucode_hdr++) {
1643 if (le32_to_cpu(ucode_hdr->offset) +
1644 le32_to_cpu(ucode_hdr->len) >
1645 fw->size) {
1646 wiphy_err(wl->wiphy,
1647 "%s: conflicting bin/hdr\n",
1648 __func__);
1649 rc = -EBADF;
1650 }
1651 }
1652 }
1653 }
1654 if (rc == 0 && wl->fw.fw_cnt != i) {
1655 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1656 wl->fw.fw_cnt);
1657 rc = -EBADF;
1658 }
1659 return rc;
1660 }
1661
1662 /*
1663 * precondition: perimeter lock has been acquired
1664 */
1665 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1666 {
1667 bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1668
1669 spin_unlock_bh(&wl->lock);
1670 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1671 if (blocked)
1672 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1673 spin_lock_bh(&wl->lock);
1674 return blocked;
1675 }
1676
1677 /*
1678 * precondition: perimeter lock has been acquired
1679 */
1680 void brcms_msleep(struct brcms_info *wl, uint ms)
1681 {
1682 spin_unlock_bh(&wl->lock);
1683 msleep(ms);
1684 spin_lock_bh(&wl->lock);
1685 }
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