1 /*
2 * Copyright (c) 2010 Broadcom Corporation
3 * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de>
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
12 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
14 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
15 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #define __UNDEF_NO_VERSION__
19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
21 #include <linux/etherdevice.h>
22 #include <linux/sched.h>
23 #include <linux/firmware.h>
24 #include <linux/interrupt.h>
25 #include <linux/module.h>
26 #include <linux/bcma/bcma.h>
27 #include <net/mac80211.h>
28 #include <defs.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 #include "debug.h"
38 #include "led.h"
39
40 #define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */
41 #define BRCMS_FLUSH_TIMEOUT 500 /* msec */
42
43 /* Flags we support */
44 #define MAC_FILTERS (FIF_ALLMULTI | \
45 FIF_FCSFAIL | \
46 FIF_CONTROL | \
47 FIF_OTHER_BSS | \
48 FIF_BCN_PRBRESP_PROMISC | \
49 FIF_PSPOLL)
50
51 #define CHAN2GHZ(channel, freqency, chflags) { \
52 .band = IEEE80211_BAND_2GHZ, \
53 .center_freq = (freqency), \
54 .hw_value = (channel), \
55 .flags = chflags, \
56 .max_antenna_gain = 0, \
57 .max_power = 19, \
58 }
59
60 #define CHAN5GHZ(channel, chflags) { \
61 .band = IEEE80211_BAND_5GHZ, \
62 .center_freq = 5000 + 5*(channel), \
63 .hw_value = (channel), \
64 .flags = chflags, \
65 .max_antenna_gain = 0, \
66 .max_power = 21, \
67 }
68
69 #define RATE(rate100m, _flags) { \
70 .bitrate = (rate100m), \
71 .flags = (_flags), \
72 .hw_value = (rate100m / 5), \
73 }
74
75 struct firmware_hdr {
76 __le32 offset;
77 __le32 len;
78 __le32 idx;
79 };
80
81 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
82 "brcm/bcm43xx",
83 NULL
84 };
85
86 static int n_adapters_found;
87
88 MODULE_AUTHOR("Broadcom Corporation");
89 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
90 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
91 MODULE_LICENSE("Dual BSD/GPL");
92 /* This needs to be adjusted when brcms_firmwares changes */
93 MODULE_FIRMWARE("brcm/bcm43xx-0.fw");
94 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw");
95
96 /* recognized BCMA Core IDs */
97 static struct bcma_device_id brcms_coreid_table[] = {
98 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS),
99 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
100 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
101 {},
102 };
103 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
104
105 #if defined(CONFIG_BRCMDBG)
106 /*
107 * Module parameter for setting the debug message level. Available
108 * flags are specified by the BRCM_DL_* macros in
109 * drivers/net/wireless/brcm80211/include/defs.h.
110 */
111 module_param_named(debug, brcm_msg_level, uint, S_IRUGO | S_IWUSR);
112 #endif
113
114 static struct ieee80211_channel brcms_2ghz_chantable[] = {
115 CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
116 CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
117 CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
118 CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
119 CHAN2GHZ(5, 2432, 0),
120 CHAN2GHZ(6, 2437, 0),
121 CHAN2GHZ(7, 2442, 0),
122 CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
123 CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
124 CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
125 CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
126 CHAN2GHZ(12, 2467,
127 IEEE80211_CHAN_NO_IR |
128 IEEE80211_CHAN_NO_HT40PLUS),
129 CHAN2GHZ(13, 2472,
130 IEEE80211_CHAN_NO_IR |
131 IEEE80211_CHAN_NO_HT40PLUS),
132 CHAN2GHZ(14, 2484,
133 IEEE80211_CHAN_NO_IR |
134 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
135 IEEE80211_CHAN_NO_OFDM)
136 };
137
138 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
139 /* UNII-1 */
140 CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
141 CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
142 CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
143 CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
144 /* UNII-2 */
145 CHAN5GHZ(52,
146 IEEE80211_CHAN_RADAR |
147 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
148 CHAN5GHZ(56,
149 IEEE80211_CHAN_RADAR |
150 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
151 CHAN5GHZ(60,
152 IEEE80211_CHAN_RADAR |
153 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
154 CHAN5GHZ(64,
155 IEEE80211_CHAN_RADAR |
156 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
157 /* MID */
158 CHAN5GHZ(100,
159 IEEE80211_CHAN_RADAR |
160 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
161 CHAN5GHZ(104,
162 IEEE80211_CHAN_RADAR |
163 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
164 CHAN5GHZ(108,
165 IEEE80211_CHAN_RADAR |
166 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
167 CHAN5GHZ(112,
168 IEEE80211_CHAN_RADAR |
169 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
170 CHAN5GHZ(116,
171 IEEE80211_CHAN_RADAR |
172 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
173 CHAN5GHZ(120,
174 IEEE80211_CHAN_RADAR |
175 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
176 CHAN5GHZ(124,
177 IEEE80211_CHAN_RADAR |
178 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
179 CHAN5GHZ(128,
180 IEEE80211_CHAN_RADAR |
181 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
182 CHAN5GHZ(132,
183 IEEE80211_CHAN_RADAR |
184 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
185 CHAN5GHZ(136,
186 IEEE80211_CHAN_RADAR |
187 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
188 CHAN5GHZ(140,
189 IEEE80211_CHAN_RADAR |
190 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS |
191 IEEE80211_CHAN_NO_HT40MINUS),
192 /* UNII-3 */
193 CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
194 CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
195 CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
196 CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
197 CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
198 };
199
200 /*
201 * The rate table is used for both 2.4G and 5G rates. The
202 * latter being a subset as it does not support CCK rates.
203 */
204 static struct ieee80211_rate legacy_ratetable[] = {
205 RATE(10, 0),
206 RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
207 RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
208 RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
209 RATE(60, 0),
210 RATE(90, 0),
211 RATE(120, 0),
212 RATE(180, 0),
213 RATE(240, 0),
214 RATE(360, 0),
215 RATE(480, 0),
216 RATE(540, 0),
217 };
218
219 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
220 .band = IEEE80211_BAND_2GHZ,
221 .channels = brcms_2ghz_chantable,
222 .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
223 .bitrates = legacy_ratetable,
224 .n_bitrates = ARRAY_SIZE(legacy_ratetable),
225 .ht_cap = {
226 /* from include/linux/ieee80211.h */
227 .cap = IEEE80211_HT_CAP_GRN_FLD |
228 IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
229 .ht_supported = true,
230 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
231 .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
232 .mcs = {
233 /* placeholders for now */
234 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
235 .rx_highest = cpu_to_le16(500),
236 .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
237 }
238 };
239
240 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
241 .band = IEEE80211_BAND_5GHZ,
242 .channels = brcms_5ghz_nphy_chantable,
243 .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
244 .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
245 .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
246 BRCMS_LEGACY_5G_RATE_OFFSET,
247 .ht_cap = {
248 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
249 IEEE80211_HT_CAP_SGI_40,
250 .ht_supported = true,
251 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
252 .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
253 .mcs = {
254 /* placeholders for now */
255 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
256 .rx_highest = cpu_to_le16(500),
257 .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
258 }
259 };
260
261 /* flags the given rate in rateset as requested */
brcms_set_basic_rate(struct brcm_rateset * rs,u16 rate,bool is_br)262 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
263 {
264 u32 i;
265
266 for (i = 0; i < rs->count; i++) {
267 if (rate != (rs->rates[i] & 0x7f))
268 continue;
269
270 if (is_br)
271 rs->rates[i] |= BRCMS_RATE_FLAG;
272 else
273 rs->rates[i] &= BRCMS_RATE_MASK;
274 return;
275 }
276 }
277
278 /**
279 * This function frees the WL per-device resources.
280 *
281 * This function frees resources owned by the WL device pointed to
282 * by the wl parameter.
283 *
284 * precondition: can both be called locked and unlocked
285 *
286 */
brcms_free(struct brcms_info * wl)287 static void brcms_free(struct brcms_info *wl)
288 {
289 struct brcms_timer *t, *next;
290
291 /* free ucode data */
292 if (wl->fw.fw_cnt)
293 brcms_ucode_data_free(&wl->ucode);
294 if (wl->irq)
295 free_irq(wl->irq, wl);
296
297 /* kill dpc */
298 tasklet_kill(&wl->tasklet);
299
300 if (wl->pub) {
301 brcms_debugfs_detach(wl->pub);
302 brcms_c_module_unregister(wl->pub, "linux", wl);
303 }
304
305 /* free common resources */
306 if (wl->wlc) {
307 brcms_c_detach(wl->wlc);
308 wl->wlc = NULL;
309 wl->pub = NULL;
310 }
311
312 /* virtual interface deletion is deferred so we cannot spinwait */
313
314 /* wait for all pending callbacks to complete */
315 while (atomic_read(&wl->callbacks) > 0)
316 schedule();
317
318 /* free timers */
319 for (t = wl->timers; t; t = next) {
320 next = t->next;
321 #ifdef DEBUG
322 kfree(t->name);
323 #endif
324 kfree(t);
325 }
326 }
327
328 /*
329 * called from both kernel as from this kernel module (error flow on attach)
330 * precondition: perimeter lock is not acquired.
331 */
brcms_remove(struct bcma_device * pdev)332 static void brcms_remove(struct bcma_device *pdev)
333 {
334 struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
335 struct brcms_info *wl = hw->priv;
336
337 if (wl->wlc) {
338 brcms_led_unregister(wl);
339 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
340 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
341 ieee80211_unregister_hw(hw);
342 }
343
344 brcms_free(wl);
345
346 bcma_set_drvdata(pdev, NULL);
347 ieee80211_free_hw(hw);
348 }
349
350 /*
351 * Precondition: Since this function is called in brcms_pci_probe() context,
352 * no locking is required.
353 */
brcms_release_fw(struct brcms_info * wl)354 static void brcms_release_fw(struct brcms_info *wl)
355 {
356 int i;
357 for (i = 0; i < MAX_FW_IMAGES; i++) {
358 release_firmware(wl->fw.fw_bin[i]);
359 release_firmware(wl->fw.fw_hdr[i]);
360 }
361 }
362
363 /*
364 * Precondition: Since this function is called in brcms_pci_probe() context,
365 * no locking is required.
366 */
brcms_request_fw(struct brcms_info * wl,struct bcma_device * pdev)367 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
368 {
369 int status;
370 struct device *device = &pdev->dev;
371 char fw_name[100];
372 int i;
373
374 memset(&wl->fw, 0, sizeof(struct brcms_firmware));
375 for (i = 0; i < MAX_FW_IMAGES; i++) {
376 if (brcms_firmwares[i] == NULL)
377 break;
378 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
379 UCODE_LOADER_API_VER);
380 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
381 if (status) {
382 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
383 KBUILD_MODNAME, fw_name);
384 return status;
385 }
386 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
387 UCODE_LOADER_API_VER);
388 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
389 if (status) {
390 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
391 KBUILD_MODNAME, fw_name);
392 return status;
393 }
394 wl->fw.hdr_num_entries[i] =
395 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
396 }
397 wl->fw.fw_cnt = i;
398 status = brcms_ucode_data_init(wl, &wl->ucode);
399 brcms_release_fw(wl);
400 return status;
401 }
402
brcms_ops_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)403 static void brcms_ops_tx(struct ieee80211_hw *hw,
404 struct ieee80211_tx_control *control,
405 struct sk_buff *skb)
406 {
407 struct brcms_info *wl = hw->priv;
408 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
409
410 spin_lock_bh(&wl->lock);
411 if (!wl->pub->up) {
412 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
413 kfree_skb(skb);
414 goto done;
415 }
416 if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
417 tx_info->rate_driver_data[0] = control->sta;
418 done:
419 spin_unlock_bh(&wl->lock);
420 }
421
brcms_ops_start(struct ieee80211_hw * hw)422 static int brcms_ops_start(struct ieee80211_hw *hw)
423 {
424 struct brcms_info *wl = hw->priv;
425 bool blocked;
426 int err;
427
428 if (!wl->ucode.bcm43xx_bomminor) {
429 err = brcms_request_fw(wl, wl->wlc->hw->d11core);
430 if (err)
431 return -ENOENT;
432 }
433
434 ieee80211_wake_queues(hw);
435 spin_lock_bh(&wl->lock);
436 blocked = brcms_rfkill_set_hw_state(wl);
437 spin_unlock_bh(&wl->lock);
438 if (!blocked)
439 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
440
441 spin_lock_bh(&wl->lock);
442 /* avoid acknowledging frames before a non-monitor device is added */
443 wl->mute_tx = true;
444
445 if (!wl->pub->up)
446 if (!blocked)
447 err = brcms_up(wl);
448 else
449 err = -ERFKILL;
450 else
451 err = -ENODEV;
452 spin_unlock_bh(&wl->lock);
453
454 if (err != 0)
455 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
456 __func__, err);
457
458 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true);
459 return err;
460 }
461
brcms_ops_stop(struct ieee80211_hw * hw)462 static void brcms_ops_stop(struct ieee80211_hw *hw)
463 {
464 struct brcms_info *wl = hw->priv;
465 int status;
466
467 ieee80211_stop_queues(hw);
468
469 if (wl->wlc == NULL)
470 return;
471
472 spin_lock_bh(&wl->lock);
473 status = brcms_c_chipmatch(wl->wlc->hw->d11core);
474 spin_unlock_bh(&wl->lock);
475 if (!status) {
476 brcms_err(wl->wlc->hw->d11core,
477 "wl: brcms_ops_stop: chipmatch failed\n");
478 return;
479 }
480
481 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false);
482
483 /* put driver in down state */
484 spin_lock_bh(&wl->lock);
485 brcms_down(wl);
486 spin_unlock_bh(&wl->lock);
487 }
488
489 static int
brcms_ops_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)490 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
491 {
492 struct brcms_info *wl = hw->priv;
493
494 /* Just STA, AP and ADHOC for now */
495 if (vif->type != NL80211_IFTYPE_STATION &&
496 vif->type != NL80211_IFTYPE_AP &&
497 vif->type != NL80211_IFTYPE_ADHOC) {
498 brcms_err(wl->wlc->hw->d11core,
499 "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
500 __func__, vif->type);
501 return -EOPNOTSUPP;
502 }
503
504 spin_lock_bh(&wl->lock);
505 wl->wlc->vif = vif;
506 wl->mute_tx = false;
507 brcms_c_mute(wl->wlc, false);
508 if (vif->type == NL80211_IFTYPE_STATION)
509 brcms_c_start_station(wl->wlc, vif->addr);
510 else if (vif->type == NL80211_IFTYPE_AP)
511 brcms_c_start_ap(wl->wlc, vif->addr, vif->bss_conf.bssid,
512 vif->bss_conf.ssid, vif->bss_conf.ssid_len);
513 else if (vif->type == NL80211_IFTYPE_ADHOC)
514 brcms_c_start_adhoc(wl->wlc, vif->addr);
515 spin_unlock_bh(&wl->lock);
516
517 return 0;
518 }
519
520 static void
brcms_ops_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)521 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
522 {
523 struct brcms_info *wl = hw->priv;
524
525 spin_lock_bh(&wl->lock);
526 wl->wlc->vif = NULL;
527 spin_unlock_bh(&wl->lock);
528 }
529
brcms_ops_config(struct ieee80211_hw * hw,u32 changed)530 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
531 {
532 struct ieee80211_conf *conf = &hw->conf;
533 struct brcms_info *wl = hw->priv;
534 struct bcma_device *core = wl->wlc->hw->d11core;
535 int err = 0;
536 int new_int;
537
538 spin_lock_bh(&wl->lock);
539 if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
540 brcms_c_set_beacon_listen_interval(wl->wlc,
541 conf->listen_interval);
542 }
543 if (changed & IEEE80211_CONF_CHANGE_MONITOR)
544 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
545 __func__, conf->flags & IEEE80211_CONF_MONITOR ?
546 "true" : "false");
547 if (changed & IEEE80211_CONF_CHANGE_PS)
548 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
549 __func__, conf->flags & IEEE80211_CONF_PS ?
550 "true" : "false");
551
552 if (changed & IEEE80211_CONF_CHANGE_POWER) {
553 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
554 if (err < 0) {
555 brcms_err(core, "%s: Error setting power_level\n",
556 __func__);
557 goto config_out;
558 }
559 new_int = brcms_c_get_tx_power(wl->wlc);
560 if (new_int != conf->power_level)
561 brcms_err(core,
562 "%s: Power level req != actual, %d %d\n",
563 __func__, conf->power_level,
564 new_int);
565 }
566 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
567 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
568 conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
569 err = brcms_c_set_channel(wl->wlc,
570 conf->chandef.chan->hw_value);
571 else
572 err = -ENOTSUPP;
573 }
574 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
575 err = brcms_c_set_rate_limit(wl->wlc,
576 conf->short_frame_max_tx_count,
577 conf->long_frame_max_tx_count);
578
579 config_out:
580 spin_unlock_bh(&wl->lock);
581 return err;
582 }
583
584 static void
brcms_ops_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)585 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
586 struct ieee80211_vif *vif,
587 struct ieee80211_bss_conf *info, u32 changed)
588 {
589 struct brcms_info *wl = hw->priv;
590 struct bcma_device *core = wl->wlc->hw->d11core;
591
592 if (changed & BSS_CHANGED_ASSOC) {
593 /* association status changed (associated/disassociated)
594 * also implies a change in the AID.
595 */
596 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
597 __func__, info->assoc ? "" : "dis");
598 spin_lock_bh(&wl->lock);
599 brcms_c_associate_upd(wl->wlc, info->assoc);
600 spin_unlock_bh(&wl->lock);
601 }
602 if (changed & BSS_CHANGED_ERP_SLOT) {
603 s8 val;
604
605 /* slot timing changed */
606 if (info->use_short_slot)
607 val = 1;
608 else
609 val = 0;
610 spin_lock_bh(&wl->lock);
611 brcms_c_set_shortslot_override(wl->wlc, val);
612 spin_unlock_bh(&wl->lock);
613 }
614
615 if (changed & BSS_CHANGED_HT) {
616 /* 802.11n parameters changed */
617 u16 mode = info->ht_operation_mode;
618
619 spin_lock_bh(&wl->lock);
620 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
621 mode & IEEE80211_HT_OP_MODE_PROTECTION);
622 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
623 mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
624 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
625 mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
626 spin_unlock_bh(&wl->lock);
627 }
628 if (changed & BSS_CHANGED_BASIC_RATES) {
629 struct ieee80211_supported_band *bi;
630 u32 br_mask, i;
631 u16 rate;
632 struct brcm_rateset rs;
633 int error;
634
635 /* retrieve the current rates */
636 spin_lock_bh(&wl->lock);
637 brcms_c_get_current_rateset(wl->wlc, &rs);
638 spin_unlock_bh(&wl->lock);
639
640 br_mask = info->basic_rates;
641 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
642 for (i = 0; i < bi->n_bitrates; i++) {
643 /* convert to internal rate value */
644 rate = (bi->bitrates[i].bitrate << 1) / 10;
645
646 /* set/clear basic rate flag */
647 brcms_set_basic_rate(&rs, rate, br_mask & 1);
648 br_mask >>= 1;
649 }
650
651 /* update the rate set */
652 spin_lock_bh(&wl->lock);
653 error = brcms_c_set_rateset(wl->wlc, &rs);
654 spin_unlock_bh(&wl->lock);
655 if (error)
656 brcms_err(core, "changing basic rates failed: %d\n",
657 error);
658 }
659 if (changed & BSS_CHANGED_BEACON_INT) {
660 /* Beacon interval changed */
661 spin_lock_bh(&wl->lock);
662 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
663 spin_unlock_bh(&wl->lock);
664 }
665 if (changed & BSS_CHANGED_BSSID) {
666 /* BSSID changed, for whatever reason (IBSS and managed mode) */
667 spin_lock_bh(&wl->lock);
668 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
669 spin_unlock_bh(&wl->lock);
670 }
671 if (changed & BSS_CHANGED_SSID) {
672 /* BSSID changed, for whatever reason (IBSS and managed mode) */
673 spin_lock_bh(&wl->lock);
674 brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len);
675 spin_unlock_bh(&wl->lock);
676 }
677 if (changed & BSS_CHANGED_BEACON) {
678 /* Beacon data changed, retrieve new beacon (beaconing modes) */
679 struct sk_buff *beacon;
680 u16 tim_offset = 0;
681
682 spin_lock_bh(&wl->lock);
683 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL);
684 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
685 info->dtim_period);
686 spin_unlock_bh(&wl->lock);
687 }
688
689 if (changed & BSS_CHANGED_AP_PROBE_RESP) {
690 struct sk_buff *probe_resp;
691
692 spin_lock_bh(&wl->lock);
693 probe_resp = ieee80211_proberesp_get(hw, vif);
694 brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
695 spin_unlock_bh(&wl->lock);
696 }
697
698 if (changed & BSS_CHANGED_BEACON_ENABLED) {
699 /* Beaconing should be enabled/disabled (beaconing modes) */
700 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
701 info->enable_beacon ? "true" : "false");
702 if (info->enable_beacon &&
703 hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
704 brcms_c_enable_probe_resp(wl->wlc, true);
705 } else {
706 brcms_c_enable_probe_resp(wl->wlc, false);
707 }
708 }
709
710 if (changed & BSS_CHANGED_CQM) {
711 /* Connection quality monitor config changed */
712 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
713 " (implement)\n", __func__, info->cqm_rssi_thold,
714 info->cqm_rssi_hyst);
715 }
716
717 if (changed & BSS_CHANGED_IBSS) {
718 /* IBSS join status changed */
719 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
720 __func__, info->ibss_joined ? "true" : "false");
721 }
722
723 if (changed & BSS_CHANGED_ARP_FILTER) {
724 /* Hardware ARP filter address list or state changed */
725 brcms_err(core, "%s: arp filtering: %d addresses"
726 " (implement)\n", __func__, info->arp_addr_cnt);
727 }
728
729 if (changed & BSS_CHANGED_QOS) {
730 /*
731 * QoS for this association was enabled/disabled.
732 * Note that it is only ever disabled for station mode.
733 */
734 brcms_err(core, "%s: qos enabled: %s (implement)\n",
735 __func__, info->qos ? "true" : "false");
736 }
737 return;
738 }
739
740 static void
brcms_ops_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)741 brcms_ops_configure_filter(struct ieee80211_hw *hw,
742 unsigned int changed_flags,
743 unsigned int *total_flags, u64 multicast)
744 {
745 struct brcms_info *wl = hw->priv;
746 struct bcma_device *core = wl->wlc->hw->d11core;
747
748 changed_flags &= MAC_FILTERS;
749 *total_flags &= MAC_FILTERS;
750
751 if (changed_flags & FIF_ALLMULTI)
752 brcms_dbg_info(core, "FIF_ALLMULTI\n");
753 if (changed_flags & FIF_FCSFAIL)
754 brcms_dbg_info(core, "FIF_FCSFAIL\n");
755 if (changed_flags & FIF_CONTROL)
756 brcms_dbg_info(core, "FIF_CONTROL\n");
757 if (changed_flags & FIF_OTHER_BSS)
758 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
759 if (changed_flags & FIF_PSPOLL)
760 brcms_dbg_info(core, "FIF_PSPOLL\n");
761 if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
762 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
763
764 spin_lock_bh(&wl->lock);
765 brcms_c_mac_promisc(wl->wlc, *total_flags);
766 spin_unlock_bh(&wl->lock);
767 return;
768 }
769
brcms_ops_sw_scan_start(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const u8 * mac_addr)770 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw,
771 struct ieee80211_vif *vif,
772 const u8 *mac_addr)
773 {
774 struct brcms_info *wl = hw->priv;
775 spin_lock_bh(&wl->lock);
776 brcms_c_scan_start(wl->wlc);
777 spin_unlock_bh(&wl->lock);
778 return;
779 }
780
brcms_ops_sw_scan_complete(struct ieee80211_hw * hw,struct ieee80211_vif * vif)781 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
782 struct ieee80211_vif *vif)
783 {
784 struct brcms_info *wl = hw->priv;
785 spin_lock_bh(&wl->lock);
786 brcms_c_scan_stop(wl->wlc);
787 spin_unlock_bh(&wl->lock);
788 return;
789 }
790
791 static int
brcms_ops_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)792 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
793 const struct ieee80211_tx_queue_params *params)
794 {
795 struct brcms_info *wl = hw->priv;
796
797 spin_lock_bh(&wl->lock);
798 brcms_c_wme_setparams(wl->wlc, queue, params, true);
799 spin_unlock_bh(&wl->lock);
800
801 return 0;
802 }
803
804 static int
brcms_ops_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)805 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
806 struct ieee80211_sta *sta)
807 {
808 struct brcms_info *wl = hw->priv;
809 struct scb *scb = &wl->wlc->pri_scb;
810
811 brcms_c_init_scb(scb);
812
813 wl->pub->global_ampdu = &(scb->scb_ampdu);
814 wl->pub->global_ampdu->scb = scb;
815 wl->pub->global_ampdu->max_pdu = 16;
816
817 /*
818 * minstrel_ht initiates addBA on our behalf by calling
819 * ieee80211_start_tx_ba_session()
820 */
821 return 0;
822 }
823
824 static int
brcms_ops_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)825 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
826 struct ieee80211_vif *vif,
827 struct ieee80211_ampdu_params *params)
828 {
829 struct brcms_info *wl = hw->priv;
830 struct scb *scb = &wl->wlc->pri_scb;
831 int status;
832 struct ieee80211_sta *sta = params->sta;
833 enum ieee80211_ampdu_mlme_action action = params->action;
834 u16 tid = params->tid;
835 u8 buf_size = params->buf_size;
836
837 if (WARN_ON(scb->magic != SCB_MAGIC))
838 return -EIDRM;
839 switch (action) {
840 case IEEE80211_AMPDU_RX_START:
841 break;
842 case IEEE80211_AMPDU_RX_STOP:
843 break;
844 case IEEE80211_AMPDU_TX_START:
845 spin_lock_bh(&wl->lock);
846 status = brcms_c_aggregatable(wl->wlc, tid);
847 spin_unlock_bh(&wl->lock);
848 if (!status) {
849 brcms_dbg_ht(wl->wlc->hw->d11core,
850 "START: tid %d is not agg\'able\n", tid);
851 return -EINVAL;
852 }
853 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
854 break;
855
856 case IEEE80211_AMPDU_TX_STOP_CONT:
857 case IEEE80211_AMPDU_TX_STOP_FLUSH:
858 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
859 spin_lock_bh(&wl->lock);
860 brcms_c_ampdu_flush(wl->wlc, sta, tid);
861 spin_unlock_bh(&wl->lock);
862 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
863 break;
864 case IEEE80211_AMPDU_TX_OPERATIONAL:
865 /*
866 * BA window size from ADDBA response ('buf_size') defines how
867 * many outstanding MPDUs are allowed for the BA stream by
868 * recipient and traffic class. 'ampdu_factor' gives maximum
869 * AMPDU size.
870 */
871 spin_lock_bh(&wl->lock);
872 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
873 (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
874 sta->ht_cap.ampdu_factor)) - 1);
875 spin_unlock_bh(&wl->lock);
876 /* Power save wakeup */
877 break;
878 default:
879 brcms_err(wl->wlc->hw->d11core,
880 "%s: Invalid command, ignoring\n", __func__);
881 }
882
883 return 0;
884 }
885
brcms_ops_rfkill_poll(struct ieee80211_hw * hw)886 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
887 {
888 struct brcms_info *wl = hw->priv;
889 bool blocked;
890
891 spin_lock_bh(&wl->lock);
892 blocked = brcms_c_check_radio_disabled(wl->wlc);
893 spin_unlock_bh(&wl->lock);
894
895 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
896 }
897
brcms_tx_flush_completed(struct brcms_info * wl)898 static bool brcms_tx_flush_completed(struct brcms_info *wl)
899 {
900 bool result;
901
902 spin_lock_bh(&wl->lock);
903 result = brcms_c_tx_flush_completed(wl->wlc);
904 spin_unlock_bh(&wl->lock);
905 return result;
906 }
907
brcms_ops_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)908 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
909 u32 queues, bool drop)
910 {
911 struct brcms_info *wl = hw->priv;
912 int ret;
913
914 no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
915
916 ret = wait_event_timeout(wl->tx_flush_wq,
917 brcms_tx_flush_completed(wl),
918 msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
919
920 brcms_dbg_mac80211(wl->wlc->hw->d11core,
921 "ret=%d\n", jiffies_to_msecs(ret));
922 }
923
brcms_ops_get_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)924 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
925 {
926 struct brcms_info *wl = hw->priv;
927 u64 tsf;
928
929 spin_lock_bh(&wl->lock);
930 tsf = brcms_c_tsf_get(wl->wlc);
931 spin_unlock_bh(&wl->lock);
932
933 return tsf;
934 }
935
brcms_ops_set_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u64 tsf)936 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
937 struct ieee80211_vif *vif, u64 tsf)
938 {
939 struct brcms_info *wl = hw->priv;
940
941 spin_lock_bh(&wl->lock);
942 brcms_c_tsf_set(wl->wlc, tsf);
943 spin_unlock_bh(&wl->lock);
944 }
945
brcms_ops_beacon_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)946 static int brcms_ops_beacon_set_tim(struct ieee80211_hw *hw,
947 struct ieee80211_sta *sta, bool set)
948 {
949 struct brcms_info *wl = hw->priv;
950 struct sk_buff *beacon = NULL;
951 u16 tim_offset = 0;
952
953 spin_lock_bh(&wl->lock);
954 if (wl->wlc->vif)
955 beacon = ieee80211_beacon_get_tim(hw, wl->wlc->vif,
956 &tim_offset, NULL);
957 if (beacon)
958 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
959 wl->wlc->vif->bss_conf.dtim_period);
960 spin_unlock_bh(&wl->lock);
961
962 return 0;
963 }
964
965 static const struct ieee80211_ops brcms_ops = {
966 .tx = brcms_ops_tx,
967 .start = brcms_ops_start,
968 .stop = brcms_ops_stop,
969 .add_interface = brcms_ops_add_interface,
970 .remove_interface = brcms_ops_remove_interface,
971 .config = brcms_ops_config,
972 .bss_info_changed = brcms_ops_bss_info_changed,
973 .configure_filter = brcms_ops_configure_filter,
974 .sw_scan_start = brcms_ops_sw_scan_start,
975 .sw_scan_complete = brcms_ops_sw_scan_complete,
976 .conf_tx = brcms_ops_conf_tx,
977 .sta_add = brcms_ops_sta_add,
978 .ampdu_action = brcms_ops_ampdu_action,
979 .rfkill_poll = brcms_ops_rfkill_poll,
980 .flush = brcms_ops_flush,
981 .get_tsf = brcms_ops_get_tsf,
982 .set_tsf = brcms_ops_set_tsf,
983 .set_tim = brcms_ops_beacon_set_tim,
984 };
985
brcms_dpc(unsigned long data)986 void brcms_dpc(unsigned long data)
987 {
988 struct brcms_info *wl;
989
990 wl = (struct brcms_info *) data;
991
992 spin_lock_bh(&wl->lock);
993
994 /* call the common second level interrupt handler */
995 if (wl->pub->up) {
996 if (wl->resched) {
997 unsigned long flags;
998
999 spin_lock_irqsave(&wl->isr_lock, flags);
1000 brcms_c_intrsupd(wl->wlc);
1001 spin_unlock_irqrestore(&wl->isr_lock, flags);
1002 }
1003
1004 wl->resched = brcms_c_dpc(wl->wlc, true);
1005 }
1006
1007 /* brcms_c_dpc() may bring the driver down */
1008 if (!wl->pub->up)
1009 goto done;
1010
1011 /* re-schedule dpc */
1012 if (wl->resched)
1013 tasklet_schedule(&wl->tasklet);
1014 else
1015 /* re-enable interrupts */
1016 brcms_intrson(wl);
1017
1018 done:
1019 spin_unlock_bh(&wl->lock);
1020 wake_up(&wl->tx_flush_wq);
1021 }
1022
brcms_isr(int irq,void * dev_id)1023 static irqreturn_t brcms_isr(int irq, void *dev_id)
1024 {
1025 struct brcms_info *wl;
1026 irqreturn_t ret = IRQ_NONE;
1027
1028 wl = (struct brcms_info *) dev_id;
1029
1030 spin_lock(&wl->isr_lock);
1031
1032 /* call common first level interrupt handler */
1033 if (brcms_c_isr(wl->wlc)) {
1034 /* schedule second level handler */
1035 tasklet_schedule(&wl->tasklet);
1036 ret = IRQ_HANDLED;
1037 }
1038
1039 spin_unlock(&wl->isr_lock);
1040
1041 return ret;
1042 }
1043
1044 /*
1045 * is called in brcms_pci_probe() context, therefore no locking required.
1046 */
ieee_hw_rate_init(struct ieee80211_hw * hw)1047 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1048 {
1049 struct brcms_info *wl = hw->priv;
1050 struct brcms_c_info *wlc = wl->wlc;
1051 struct ieee80211_supported_band *band;
1052 int has_5g = 0;
1053 u16 phy_type;
1054
1055 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
1056 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1057
1058 phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1059 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1060 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1061 *band = brcms_band_2GHz_nphy_template;
1062 if (phy_type == PHY_TYPE_LCN) {
1063 /* Single stream */
1064 band->ht_cap.mcs.rx_mask[1] = 0;
1065 band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1066 }
1067 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
1068 } else {
1069 return -EPERM;
1070 }
1071
1072 /* Assume all bands use the same phy. True for 11n devices. */
1073 if (wl->pub->_nbands > 1) {
1074 has_5g++;
1075 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1076 band = &wlc->bandstate[BAND_5G_INDEX]->band;
1077 *band = brcms_band_5GHz_nphy_template;
1078 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
1079 } else {
1080 return -EPERM;
1081 }
1082 }
1083 return 0;
1084 }
1085
1086 /*
1087 * is called in brcms_pci_probe() context, therefore no locking required.
1088 */
ieee_hw_init(struct ieee80211_hw * hw)1089 static int ieee_hw_init(struct ieee80211_hw *hw)
1090 {
1091 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
1092 ieee80211_hw_set(hw, SIGNAL_DBM);
1093 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
1094
1095 hw->extra_tx_headroom = brcms_c_get_header_len();
1096 hw->queues = N_TX_QUEUES;
1097 hw->max_rates = 2; /* Primary rate and 1 fallback rate */
1098
1099 /* channel change time is dependent on chip and band */
1100 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1101 BIT(NL80211_IFTYPE_AP) |
1102 BIT(NL80211_IFTYPE_ADHOC);
1103
1104 /*
1105 * deactivate sending probe responses by ucude, because this will
1106 * cause problems when WPS is used.
1107 *
1108 * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1109 */
1110
1111 hw->rate_control_algorithm = "minstrel_ht";
1112
1113 hw->sta_data_size = 0;
1114 return ieee_hw_rate_init(hw);
1115 }
1116
1117 /**
1118 * attach to the WL device.
1119 *
1120 * Attach to the WL device identified by vendor and device parameters.
1121 * regs is a host accessible memory address pointing to WL device registers.
1122 *
1123 * is called in brcms_bcma_probe() context, therefore no locking required.
1124 */
brcms_attach(struct bcma_device * pdev)1125 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1126 {
1127 struct brcms_info *wl = NULL;
1128 int unit, err;
1129 struct ieee80211_hw *hw;
1130 u8 perm[ETH_ALEN];
1131
1132 unit = n_adapters_found;
1133 err = 0;
1134
1135 if (unit < 0)
1136 return NULL;
1137
1138 /* allocate private info */
1139 hw = bcma_get_drvdata(pdev);
1140 if (hw != NULL)
1141 wl = hw->priv;
1142 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1143 return NULL;
1144 wl->wiphy = hw->wiphy;
1145
1146 atomic_set(&wl->callbacks, 0);
1147
1148 init_waitqueue_head(&wl->tx_flush_wq);
1149
1150 /* setup the bottom half handler */
1151 tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1152
1153 spin_lock_init(&wl->lock);
1154 spin_lock_init(&wl->isr_lock);
1155
1156 /* common load-time initialization */
1157 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1158 if (!wl->wlc) {
1159 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1160 KBUILD_MODNAME, err);
1161 goto fail;
1162 }
1163 wl->pub = brcms_c_pub(wl->wlc);
1164
1165 wl->pub->ieee_hw = hw;
1166
1167 /* register our interrupt handler */
1168 if (request_irq(pdev->irq, brcms_isr,
1169 IRQF_SHARED, KBUILD_MODNAME, wl)) {
1170 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1171 goto fail;
1172 }
1173 wl->irq = pdev->irq;
1174
1175 /* register module */
1176 brcms_c_module_register(wl->pub, "linux", wl, NULL);
1177
1178 if (ieee_hw_init(hw)) {
1179 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1180 __func__);
1181 goto fail;
1182 }
1183
1184 brcms_c_regd_init(wl->wlc);
1185
1186 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1187 if (WARN_ON(!is_valid_ether_addr(perm)))
1188 goto fail;
1189 SET_IEEE80211_PERM_ADDR(hw, perm);
1190
1191 err = ieee80211_register_hw(hw);
1192 if (err)
1193 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1194 "%d\n", __func__, err);
1195
1196 if (wl->pub->srom_ccode[0] &&
1197 regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1198 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1199
1200 brcms_debugfs_attach(wl->pub);
1201 brcms_debugfs_create_files(wl->pub);
1202 n_adapters_found++;
1203 return wl;
1204
1205 fail:
1206 brcms_free(wl);
1207 return NULL;
1208 }
1209
1210
1211
1212 /**
1213 * determines if a device is a WL device, and if so, attaches it.
1214 *
1215 * This function determines if a device pointed to by pdev is a WL device,
1216 * and if so, performs a brcms_attach() on it.
1217 *
1218 * Perimeter lock is initialized in the course of this function.
1219 */
brcms_bcma_probe(struct bcma_device * pdev)1220 static int brcms_bcma_probe(struct bcma_device *pdev)
1221 {
1222 struct brcms_info *wl;
1223 struct ieee80211_hw *hw;
1224 int ret;
1225
1226 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1227 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1228 pdev->irq);
1229
1230 if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1231 (pdev->id.id != BCMA_CORE_80211))
1232 return -ENODEV;
1233
1234 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1235 if (!hw) {
1236 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1237 return -ENOMEM;
1238 }
1239
1240 SET_IEEE80211_DEV(hw, &pdev->dev);
1241
1242 bcma_set_drvdata(pdev, hw);
1243
1244 memset(hw->priv, 0, sizeof(*wl));
1245
1246 wl = brcms_attach(pdev);
1247 if (!wl) {
1248 pr_err("%s: brcms_attach failed!\n", __func__);
1249 ret = -ENODEV;
1250 goto err_free_ieee80211;
1251 }
1252 brcms_led_register(wl);
1253
1254 return 0;
1255
1256 err_free_ieee80211:
1257 ieee80211_free_hw(hw);
1258 return ret;
1259 }
1260
brcms_suspend(struct bcma_device * pdev)1261 static int brcms_suspend(struct bcma_device *pdev)
1262 {
1263 struct brcms_info *wl;
1264 struct ieee80211_hw *hw;
1265
1266 hw = bcma_get_drvdata(pdev);
1267 wl = hw->priv;
1268 if (!wl) {
1269 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1270 __func__);
1271 return -ENODEV;
1272 }
1273
1274 /* only need to flag hw is down for proper resume */
1275 spin_lock_bh(&wl->lock);
1276 wl->pub->hw_up = false;
1277 spin_unlock_bh(&wl->lock);
1278
1279 brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1280
1281 return 0;
1282 }
1283
brcms_resume(struct bcma_device * pdev)1284 static int brcms_resume(struct bcma_device *pdev)
1285 {
1286 return 0;
1287 }
1288
1289 static struct bcma_driver brcms_bcma_driver = {
1290 .name = KBUILD_MODNAME,
1291 .probe = brcms_bcma_probe,
1292 .suspend = brcms_suspend,
1293 .resume = brcms_resume,
1294 .remove = brcms_remove,
1295 .id_table = brcms_coreid_table,
1296 };
1297
1298 /**
1299 * This is the main entry point for the brcmsmac driver.
1300 *
1301 * This function is scheduled upon module initialization and
1302 * does the driver registration, which result in brcms_bcma_probe()
1303 * call resulting in the driver bringup.
1304 */
brcms_driver_init(struct work_struct * work)1305 static void brcms_driver_init(struct work_struct *work)
1306 {
1307 int error;
1308
1309 error = bcma_driver_register(&brcms_bcma_driver);
1310 if (error)
1311 pr_err("%s: register returned %d\n", __func__, error);
1312 }
1313
1314 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1315
brcms_module_init(void)1316 static int __init brcms_module_init(void)
1317 {
1318 brcms_debugfs_init();
1319 if (!schedule_work(&brcms_driver_work))
1320 return -EBUSY;
1321
1322 return 0;
1323 }
1324
1325 /**
1326 * This function unloads the brcmsmac driver from the system.
1327 *
1328 * This function unconditionally unloads the brcmsmac driver module from the
1329 * system.
1330 *
1331 */
brcms_module_exit(void)1332 static void __exit brcms_module_exit(void)
1333 {
1334 cancel_work_sync(&brcms_driver_work);
1335 bcma_driver_unregister(&brcms_bcma_driver);
1336 brcms_debugfs_exit();
1337 }
1338
1339 module_init(brcms_module_init);
1340 module_exit(brcms_module_exit);
1341
1342 /*
1343 * precondition: perimeter lock has been acquired
1344 */
brcms_txflowcontrol(struct brcms_info * wl,struct brcms_if * wlif,bool state,int prio)1345 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1346 bool state, int prio)
1347 {
1348 brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1349 }
1350
1351 /*
1352 * precondition: perimeter lock has been acquired
1353 */
brcms_init(struct brcms_info * wl)1354 void brcms_init(struct brcms_info *wl)
1355 {
1356 brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1357 wl->pub->unit);
1358 brcms_reset(wl);
1359 brcms_c_init(wl->wlc, wl->mute_tx);
1360 }
1361
1362 /*
1363 * precondition: perimeter lock has been acquired
1364 */
brcms_reset(struct brcms_info * wl)1365 uint brcms_reset(struct brcms_info *wl)
1366 {
1367 brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1368 brcms_c_reset(wl->wlc);
1369
1370 /* dpc will not be rescheduled */
1371 wl->resched = false;
1372
1373 /* inform publicly that interface is down */
1374 wl->pub->up = false;
1375
1376 return 0;
1377 }
1378
brcms_fatal_error(struct brcms_info * wl)1379 void brcms_fatal_error(struct brcms_info *wl)
1380 {
1381 brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1382 wl->wlc->pub->unit);
1383 brcms_reset(wl);
1384 ieee80211_restart_hw(wl->pub->ieee_hw);
1385 }
1386
1387 /*
1388 * These are interrupt on/off entry points. Disable interrupts
1389 * during interrupt state transition.
1390 */
brcms_intrson(struct brcms_info * wl)1391 void brcms_intrson(struct brcms_info *wl)
1392 {
1393 unsigned long flags;
1394
1395 spin_lock_irqsave(&wl->isr_lock, flags);
1396 brcms_c_intrson(wl->wlc);
1397 spin_unlock_irqrestore(&wl->isr_lock, flags);
1398 }
1399
brcms_intrsoff(struct brcms_info * wl)1400 u32 brcms_intrsoff(struct brcms_info *wl)
1401 {
1402 unsigned long flags;
1403 u32 status;
1404
1405 spin_lock_irqsave(&wl->isr_lock, flags);
1406 status = brcms_c_intrsoff(wl->wlc);
1407 spin_unlock_irqrestore(&wl->isr_lock, flags);
1408 return status;
1409 }
1410
brcms_intrsrestore(struct brcms_info * wl,u32 macintmask)1411 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1412 {
1413 unsigned long flags;
1414
1415 spin_lock_irqsave(&wl->isr_lock, flags);
1416 brcms_c_intrsrestore(wl->wlc, macintmask);
1417 spin_unlock_irqrestore(&wl->isr_lock, flags);
1418 }
1419
1420 /*
1421 * precondition: perimeter lock has been acquired
1422 */
brcms_up(struct brcms_info * wl)1423 int brcms_up(struct brcms_info *wl)
1424 {
1425 int error = 0;
1426
1427 if (wl->pub->up)
1428 return 0;
1429
1430 error = brcms_c_up(wl->wlc);
1431
1432 return error;
1433 }
1434
1435 /*
1436 * precondition: perimeter lock has been acquired
1437 */
brcms_down(struct brcms_info * wl)1438 void brcms_down(struct brcms_info *wl)
1439 {
1440 uint callbacks, ret_val = 0;
1441
1442 /* call common down function */
1443 ret_val = brcms_c_down(wl->wlc);
1444 callbacks = atomic_read(&wl->callbacks) - ret_val;
1445
1446 /* wait for down callbacks to complete */
1447 spin_unlock_bh(&wl->lock);
1448
1449 /* For HIGH_only driver, it's important to actually schedule other work,
1450 * not just spin wait since everything runs at schedule level
1451 */
1452 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1453
1454 spin_lock_bh(&wl->lock);
1455 }
1456
1457 /*
1458 * precondition: perimeter lock is not acquired
1459 */
_brcms_timer(struct work_struct * work)1460 static void _brcms_timer(struct work_struct *work)
1461 {
1462 struct brcms_timer *t = container_of(work, struct brcms_timer,
1463 dly_wrk.work);
1464
1465 spin_lock_bh(&t->wl->lock);
1466
1467 if (t->set) {
1468 if (t->periodic) {
1469 atomic_inc(&t->wl->callbacks);
1470 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1471 &t->dly_wrk,
1472 msecs_to_jiffies(t->ms));
1473 } else {
1474 t->set = false;
1475 }
1476
1477 t->fn(t->arg);
1478 }
1479
1480 atomic_dec(&t->wl->callbacks);
1481
1482 spin_unlock_bh(&t->wl->lock);
1483 }
1484
1485 /*
1486 * Adds a timer to the list. Caller supplies a timer function.
1487 * Is called from wlc.
1488 *
1489 * precondition: perimeter lock has been acquired
1490 */
brcms_init_timer(struct brcms_info * wl,void (* fn)(void * arg),void * arg,const char * name)1491 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1492 void (*fn) (void *arg),
1493 void *arg, const char *name)
1494 {
1495 struct brcms_timer *t;
1496
1497 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1498 if (!t)
1499 return NULL;
1500
1501 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1502 t->wl = wl;
1503 t->fn = fn;
1504 t->arg = arg;
1505 t->next = wl->timers;
1506 wl->timers = t;
1507
1508 #ifdef DEBUG
1509 t->name = kstrdup(name, GFP_ATOMIC);
1510 #endif
1511
1512 return t;
1513 }
1514
1515 /*
1516 * adds only the kernel timer since it's going to be more accurate
1517 * as well as it's easier to make it periodic
1518 *
1519 * precondition: perimeter lock has been acquired
1520 */
brcms_add_timer(struct brcms_timer * t,uint ms,int periodic)1521 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1522 {
1523 struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1524
1525 #ifdef DEBUG
1526 if (t->set)
1527 brcms_dbg_info(t->wl->wlc->hw->d11core,
1528 "%s: Already set. Name: %s, per %d\n",
1529 __func__, t->name, periodic);
1530 #endif
1531 t->ms = ms;
1532 t->periodic = (bool) periodic;
1533 if (!t->set) {
1534 t->set = true;
1535 atomic_inc(&t->wl->callbacks);
1536 }
1537
1538 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1539 }
1540
1541 /*
1542 * return true if timer successfully deleted, false if still pending
1543 *
1544 * precondition: perimeter lock has been acquired
1545 */
brcms_del_timer(struct brcms_timer * t)1546 bool brcms_del_timer(struct brcms_timer *t)
1547 {
1548 if (t->set) {
1549 t->set = false;
1550 if (!cancel_delayed_work(&t->dly_wrk))
1551 return false;
1552
1553 atomic_dec(&t->wl->callbacks);
1554 }
1555
1556 return true;
1557 }
1558
1559 /*
1560 * precondition: perimeter lock has been acquired
1561 */
brcms_free_timer(struct brcms_timer * t)1562 void brcms_free_timer(struct brcms_timer *t)
1563 {
1564 struct brcms_info *wl = t->wl;
1565 struct brcms_timer *tmp;
1566
1567 /* delete the timer in case it is active */
1568 brcms_del_timer(t);
1569
1570 if (wl->timers == t) {
1571 wl->timers = wl->timers->next;
1572 #ifdef DEBUG
1573 kfree(t->name);
1574 #endif
1575 kfree(t);
1576 return;
1577
1578 }
1579
1580 tmp = wl->timers;
1581 while (tmp) {
1582 if (tmp->next == t) {
1583 tmp->next = t->next;
1584 #ifdef DEBUG
1585 kfree(t->name);
1586 #endif
1587 kfree(t);
1588 return;
1589 }
1590 tmp = tmp->next;
1591 }
1592
1593 }
1594
1595 /*
1596 * precondition: perimeter lock has been acquired
1597 */
brcms_ucode_init_buf(struct brcms_info * wl,void ** pbuf,u32 idx)1598 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1599 {
1600 int i, entry;
1601 const u8 *pdata;
1602 struct firmware_hdr *hdr;
1603 for (i = 0; i < wl->fw.fw_cnt; i++) {
1604 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1605 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1606 entry++, hdr++) {
1607 u32 len = le32_to_cpu(hdr->len);
1608 if (le32_to_cpu(hdr->idx) == idx) {
1609 pdata = wl->fw.fw_bin[i]->data +
1610 le32_to_cpu(hdr->offset);
1611 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1612 if (*pbuf == NULL)
1613 goto fail;
1614
1615 return 0;
1616 }
1617 }
1618 }
1619 brcms_err(wl->wlc->hw->d11core,
1620 "ERROR: ucode buf tag:%d can not be found!\n", idx);
1621 *pbuf = NULL;
1622 fail:
1623 return -ENODATA;
1624 }
1625
1626 /*
1627 * Precondition: Since this function is called in brcms_bcma_probe() context,
1628 * no locking is required.
1629 */
brcms_ucode_init_uint(struct brcms_info * wl,size_t * n_bytes,u32 idx)1630 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1631 {
1632 int i, entry;
1633 const u8 *pdata;
1634 struct firmware_hdr *hdr;
1635 for (i = 0; i < wl->fw.fw_cnt; i++) {
1636 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1637 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1638 entry++, hdr++) {
1639 if (le32_to_cpu(hdr->idx) == idx) {
1640 pdata = wl->fw.fw_bin[i]->data +
1641 le32_to_cpu(hdr->offset);
1642 if (le32_to_cpu(hdr->len) != 4) {
1643 brcms_err(wl->wlc->hw->d11core,
1644 "ERROR: fw hdr len\n");
1645 return -ENOMSG;
1646 }
1647 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1648 return 0;
1649 }
1650 }
1651 }
1652 brcms_err(wl->wlc->hw->d11core,
1653 "ERROR: ucode tag:%d can not be found!\n", idx);
1654 return -ENOMSG;
1655 }
1656
1657 /*
1658 * precondition: can both be called locked and unlocked
1659 */
brcms_ucode_free_buf(void * p)1660 void brcms_ucode_free_buf(void *p)
1661 {
1662 kfree(p);
1663 }
1664
1665 /*
1666 * checks validity of all firmware images loaded from user space
1667 *
1668 * Precondition: Since this function is called in brcms_bcma_probe() context,
1669 * no locking is required.
1670 */
brcms_check_firmwares(struct brcms_info * wl)1671 int brcms_check_firmwares(struct brcms_info *wl)
1672 {
1673 int i;
1674 int entry;
1675 int rc = 0;
1676 const struct firmware *fw;
1677 const struct firmware *fw_hdr;
1678 struct firmware_hdr *ucode_hdr;
1679 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1680 fw = wl->fw.fw_bin[i];
1681 fw_hdr = wl->fw.fw_hdr[i];
1682 if (fw == NULL && fw_hdr == NULL) {
1683 break;
1684 } else if (fw == NULL || fw_hdr == NULL) {
1685 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1686 __func__);
1687 rc = -EBADF;
1688 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1689 wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1690 "size %zu/%zu\n", __func__, fw_hdr->size,
1691 sizeof(struct firmware_hdr));
1692 rc = -EBADF;
1693 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1694 wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1695 __func__, fw->size);
1696 rc = -EBADF;
1697 } else {
1698 /* check if ucode section overruns firmware image */
1699 ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1700 for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1701 !rc; entry++, ucode_hdr++) {
1702 if (le32_to_cpu(ucode_hdr->offset) +
1703 le32_to_cpu(ucode_hdr->len) >
1704 fw->size) {
1705 wiphy_err(wl->wiphy,
1706 "%s: conflicting bin/hdr\n",
1707 __func__);
1708 rc = -EBADF;
1709 }
1710 }
1711 }
1712 }
1713 if (rc == 0 && wl->fw.fw_cnt != i) {
1714 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1715 wl->fw.fw_cnt);
1716 rc = -EBADF;
1717 }
1718 return rc;
1719 }
1720
1721 /*
1722 * precondition: perimeter lock has been acquired
1723 */
brcms_rfkill_set_hw_state(struct brcms_info * wl)1724 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1725 {
1726 bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1727
1728 spin_unlock_bh(&wl->lock);
1729 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1730 if (blocked)
1731 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1732 spin_lock_bh(&wl->lock);
1733 return blocked;
1734 }
1735