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_PROMISC_IN_BSS | \
45 FIF_ALLMULTI | \
46 FIF_FCSFAIL | \
47 FIF_CONTROL | \
48 FIF_OTHER_BSS | \
49 FIF_BCN_PRBRESP_PROMISC | \
50 FIF_PSPOLL)
51
52 #define CHAN2GHZ(channel, freqency, chflags) { \
53 .band = IEEE80211_BAND_2GHZ, \
54 .center_freq = (freqency), \
55 .hw_value = (channel), \
56 .flags = chflags, \
57 .max_antenna_gain = 0, \
58 .max_power = 19, \
59 }
60
61 #define CHAN5GHZ(channel, chflags) { \
62 .band = IEEE80211_BAND_5GHZ, \
63 .center_freq = 5000 + 5*(channel), \
64 .hw_value = (channel), \
65 .flags = chflags, \
66 .max_antenna_gain = 0, \
67 .max_power = 21, \
68 }
69
70 #define RATE(rate100m, _flags) { \
71 .bitrate = (rate100m), \
72 .flags = (_flags), \
73 .hw_value = (rate100m / 5), \
74 }
75
76 struct firmware_hdr {
77 __le32 offset;
78 __le32 len;
79 __le32 idx;
80 };
81
82 static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
83 "brcm/bcm43xx",
84 NULL
85 };
86
87 static int n_adapters_found;
88
89 MODULE_AUTHOR("Broadcom Corporation");
90 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
91 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
92 MODULE_LICENSE("Dual BSD/GPL");
93 /* This needs to be adjusted when brcms_firmwares changes */
94 MODULE_FIRMWARE("brcm/bcm43xx-0.fw");
95 MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw");
96
97 /* recognized BCMA Core IDs */
98 static struct bcma_device_id brcms_coreid_table[] = {
99 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS),
100 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 23, BCMA_ANY_CLASS),
101 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 24, BCMA_ANY_CLASS),
102 BCMA_CORETABLE_END
103 };
104 MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
105
106 #if defined(CONFIG_BRCMDBG)
107 /*
108 * Module parameter for setting the debug message level. Available
109 * flags are specified by the BRCM_DL_* macros in
110 * drivers/net/wireless/brcm80211/include/defs.h.
111 */
112 module_param_named(debug, brcm_msg_level, uint, S_IRUGO | S_IWUSR);
113 #endif
114
115 static struct ieee80211_channel brcms_2ghz_chantable[] = {
116 CHAN2GHZ(1, 2412, IEEE80211_CHAN_NO_HT40MINUS),
117 CHAN2GHZ(2, 2417, IEEE80211_CHAN_NO_HT40MINUS),
118 CHAN2GHZ(3, 2422, IEEE80211_CHAN_NO_HT40MINUS),
119 CHAN2GHZ(4, 2427, IEEE80211_CHAN_NO_HT40MINUS),
120 CHAN2GHZ(5, 2432, 0),
121 CHAN2GHZ(6, 2437, 0),
122 CHAN2GHZ(7, 2442, 0),
123 CHAN2GHZ(8, 2447, IEEE80211_CHAN_NO_HT40PLUS),
124 CHAN2GHZ(9, 2452, IEEE80211_CHAN_NO_HT40PLUS),
125 CHAN2GHZ(10, 2457, IEEE80211_CHAN_NO_HT40PLUS),
126 CHAN2GHZ(11, 2462, IEEE80211_CHAN_NO_HT40PLUS),
127 CHAN2GHZ(12, 2467,
128 IEEE80211_CHAN_NO_IR |
129 IEEE80211_CHAN_NO_HT40PLUS),
130 CHAN2GHZ(13, 2472,
131 IEEE80211_CHAN_NO_IR |
132 IEEE80211_CHAN_NO_HT40PLUS),
133 CHAN2GHZ(14, 2484,
134 IEEE80211_CHAN_NO_IR |
135 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
136 IEEE80211_CHAN_NO_OFDM)
137 };
138
139 static struct ieee80211_channel brcms_5ghz_nphy_chantable[] = {
140 /* UNII-1 */
141 CHAN5GHZ(36, IEEE80211_CHAN_NO_HT40MINUS),
142 CHAN5GHZ(40, IEEE80211_CHAN_NO_HT40PLUS),
143 CHAN5GHZ(44, IEEE80211_CHAN_NO_HT40MINUS),
144 CHAN5GHZ(48, IEEE80211_CHAN_NO_HT40PLUS),
145 /* UNII-2 */
146 CHAN5GHZ(52,
147 IEEE80211_CHAN_RADAR |
148 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
149 CHAN5GHZ(56,
150 IEEE80211_CHAN_RADAR |
151 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
152 CHAN5GHZ(60,
153 IEEE80211_CHAN_RADAR |
154 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
155 CHAN5GHZ(64,
156 IEEE80211_CHAN_RADAR |
157 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
158 /* MID */
159 CHAN5GHZ(100,
160 IEEE80211_CHAN_RADAR |
161 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
162 CHAN5GHZ(104,
163 IEEE80211_CHAN_RADAR |
164 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
165 CHAN5GHZ(108,
166 IEEE80211_CHAN_RADAR |
167 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
168 CHAN5GHZ(112,
169 IEEE80211_CHAN_RADAR |
170 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
171 CHAN5GHZ(116,
172 IEEE80211_CHAN_RADAR |
173 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
174 CHAN5GHZ(120,
175 IEEE80211_CHAN_RADAR |
176 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
177 CHAN5GHZ(124,
178 IEEE80211_CHAN_RADAR |
179 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
180 CHAN5GHZ(128,
181 IEEE80211_CHAN_RADAR |
182 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
183 CHAN5GHZ(132,
184 IEEE80211_CHAN_RADAR |
185 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
186 CHAN5GHZ(136,
187 IEEE80211_CHAN_RADAR |
188 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
189 CHAN5GHZ(140,
190 IEEE80211_CHAN_RADAR |
191 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS |
192 IEEE80211_CHAN_NO_HT40MINUS),
193 /* UNII-3 */
194 CHAN5GHZ(149, IEEE80211_CHAN_NO_HT40MINUS),
195 CHAN5GHZ(153, IEEE80211_CHAN_NO_HT40PLUS),
196 CHAN5GHZ(157, IEEE80211_CHAN_NO_HT40MINUS),
197 CHAN5GHZ(161, IEEE80211_CHAN_NO_HT40PLUS),
198 CHAN5GHZ(165, IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
199 };
200
201 /*
202 * The rate table is used for both 2.4G and 5G rates. The
203 * latter being a subset as it does not support CCK rates.
204 */
205 static struct ieee80211_rate legacy_ratetable[] = {
206 RATE(10, 0),
207 RATE(20, IEEE80211_RATE_SHORT_PREAMBLE),
208 RATE(55, IEEE80211_RATE_SHORT_PREAMBLE),
209 RATE(110, IEEE80211_RATE_SHORT_PREAMBLE),
210 RATE(60, 0),
211 RATE(90, 0),
212 RATE(120, 0),
213 RATE(180, 0),
214 RATE(240, 0),
215 RATE(360, 0),
216 RATE(480, 0),
217 RATE(540, 0),
218 };
219
220 static const struct ieee80211_supported_band brcms_band_2GHz_nphy_template = {
221 .band = IEEE80211_BAND_2GHZ,
222 .channels = brcms_2ghz_chantable,
223 .n_channels = ARRAY_SIZE(brcms_2ghz_chantable),
224 .bitrates = legacy_ratetable,
225 .n_bitrates = ARRAY_SIZE(legacy_ratetable),
226 .ht_cap = {
227 /* from include/linux/ieee80211.h */
228 .cap = IEEE80211_HT_CAP_GRN_FLD |
229 IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
230 .ht_supported = true,
231 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
232 .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
233 .mcs = {
234 /* placeholders for now */
235 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
236 .rx_highest = cpu_to_le16(500),
237 .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
238 }
239 };
240
241 static const struct ieee80211_supported_band brcms_band_5GHz_nphy_template = {
242 .band = IEEE80211_BAND_5GHZ,
243 .channels = brcms_5ghz_nphy_chantable,
244 .n_channels = ARRAY_SIZE(brcms_5ghz_nphy_chantable),
245 .bitrates = legacy_ratetable + BRCMS_LEGACY_5G_RATE_OFFSET,
246 .n_bitrates = ARRAY_SIZE(legacy_ratetable) -
247 BRCMS_LEGACY_5G_RATE_OFFSET,
248 .ht_cap = {
249 .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
250 IEEE80211_HT_CAP_SGI_40,
251 .ht_supported = true,
252 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
253 .ampdu_density = AMPDU_DEF_MPDU_DENSITY,
254 .mcs = {
255 /* placeholders for now */
256 .rx_mask = {0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
257 .rx_highest = cpu_to_le16(500),
258 .tx_params = IEEE80211_HT_MCS_TX_DEFINED}
259 }
260 };
261
262 /* flags the given rate in rateset as requested */
brcms_set_basic_rate(struct brcm_rateset * rs,u16 rate,bool is_br)263 static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
264 {
265 u32 i;
266
267 for (i = 0; i < rs->count; i++) {
268 if (rate != (rs->rates[i] & 0x7f))
269 continue;
270
271 if (is_br)
272 rs->rates[i] |= BRCMS_RATE_FLAG;
273 else
274 rs->rates[i] &= BRCMS_RATE_MASK;
275 return;
276 }
277 }
278
279 /**
280 * This function frees the WL per-device resources.
281 *
282 * This function frees resources owned by the WL device pointed to
283 * by the wl parameter.
284 *
285 * precondition: can both be called locked and unlocked
286 *
287 */
brcms_free(struct brcms_info * wl)288 static void brcms_free(struct brcms_info *wl)
289 {
290 struct brcms_timer *t, *next;
291
292 /* free ucode data */
293 if (wl->fw.fw_cnt)
294 brcms_ucode_data_free(&wl->ucode);
295 if (wl->irq)
296 free_irq(wl->irq, wl);
297
298 /* kill dpc */
299 tasklet_kill(&wl->tasklet);
300
301 if (wl->pub) {
302 brcms_debugfs_detach(wl->pub);
303 brcms_c_module_unregister(wl->pub, "linux", wl);
304 }
305
306 /* free common resources */
307 if (wl->wlc) {
308 brcms_c_detach(wl->wlc);
309 wl->wlc = NULL;
310 wl->pub = NULL;
311 }
312
313 /* virtual interface deletion is deferred so we cannot spinwait */
314
315 /* wait for all pending callbacks to complete */
316 while (atomic_read(&wl->callbacks) > 0)
317 schedule();
318
319 /* free timers */
320 for (t = wl->timers; t; t = next) {
321 next = t->next;
322 #ifdef DEBUG
323 kfree(t->name);
324 #endif
325 kfree(t);
326 }
327 }
328
329 /*
330 * called from both kernel as from this kernel module (error flow on attach)
331 * precondition: perimeter lock is not acquired.
332 */
brcms_remove(struct bcma_device * pdev)333 static void brcms_remove(struct bcma_device *pdev)
334 {
335 struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
336 struct brcms_info *wl = hw->priv;
337
338 if (wl->wlc) {
339 brcms_led_unregister(wl);
340 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
341 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
342 ieee80211_unregister_hw(hw);
343 }
344
345 brcms_free(wl);
346
347 bcma_set_drvdata(pdev, NULL);
348 ieee80211_free_hw(hw);
349 }
350
351 /*
352 * Precondition: Since this function is called in brcms_pci_probe() context,
353 * no locking is required.
354 */
brcms_release_fw(struct brcms_info * wl)355 static void brcms_release_fw(struct brcms_info *wl)
356 {
357 int i;
358 for (i = 0; i < MAX_FW_IMAGES; i++) {
359 release_firmware(wl->fw.fw_bin[i]);
360 release_firmware(wl->fw.fw_hdr[i]);
361 }
362 }
363
364 /*
365 * Precondition: Since this function is called in brcms_pci_probe() context,
366 * no locking is required.
367 */
brcms_request_fw(struct brcms_info * wl,struct bcma_device * pdev)368 static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
369 {
370 int status;
371 struct device *device = &pdev->dev;
372 char fw_name[100];
373 int i;
374
375 memset(&wl->fw, 0, sizeof(struct brcms_firmware));
376 for (i = 0; i < MAX_FW_IMAGES; i++) {
377 if (brcms_firmwares[i] == NULL)
378 break;
379 sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
380 UCODE_LOADER_API_VER);
381 status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
382 if (status) {
383 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
384 KBUILD_MODNAME, fw_name);
385 return status;
386 }
387 sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
388 UCODE_LOADER_API_VER);
389 status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
390 if (status) {
391 wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
392 KBUILD_MODNAME, fw_name);
393 return status;
394 }
395 wl->fw.hdr_num_entries[i] =
396 wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
397 }
398 wl->fw.fw_cnt = i;
399 status = brcms_ucode_data_init(wl, &wl->ucode);
400 brcms_release_fw(wl);
401 return status;
402 }
403
brcms_ops_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)404 static void brcms_ops_tx(struct ieee80211_hw *hw,
405 struct ieee80211_tx_control *control,
406 struct sk_buff *skb)
407 {
408 struct brcms_info *wl = hw->priv;
409 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
410
411 spin_lock_bh(&wl->lock);
412 if (!wl->pub->up) {
413 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
414 kfree_skb(skb);
415 goto done;
416 }
417 if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
418 tx_info->rate_driver_data[0] = control->sta;
419 done:
420 spin_unlock_bh(&wl->lock);
421 }
422
brcms_ops_start(struct ieee80211_hw * hw)423 static int brcms_ops_start(struct ieee80211_hw *hw)
424 {
425 struct brcms_info *wl = hw->priv;
426 bool blocked;
427 int err;
428
429 if (!wl->ucode.bcm43xx_bomminor) {
430 err = brcms_request_fw(wl, wl->wlc->hw->d11core);
431 if (err)
432 return -ENOENT;
433 }
434
435 ieee80211_wake_queues(hw);
436 spin_lock_bh(&wl->lock);
437 blocked = brcms_rfkill_set_hw_state(wl);
438 spin_unlock_bh(&wl->lock);
439 if (!blocked)
440 wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
441
442 spin_lock_bh(&wl->lock);
443 /* avoid acknowledging frames before a non-monitor device is added */
444 wl->mute_tx = true;
445
446 if (!wl->pub->up)
447 if (!blocked)
448 err = brcms_up(wl);
449 else
450 err = -ERFKILL;
451 else
452 err = -ENODEV;
453 spin_unlock_bh(&wl->lock);
454
455 if (err != 0)
456 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
457 __func__, err);
458
459 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true);
460 return err;
461 }
462
brcms_ops_stop(struct ieee80211_hw * hw)463 static void brcms_ops_stop(struct ieee80211_hw *hw)
464 {
465 struct brcms_info *wl = hw->priv;
466 int status;
467
468 ieee80211_stop_queues(hw);
469
470 if (wl->wlc == NULL)
471 return;
472
473 spin_lock_bh(&wl->lock);
474 status = brcms_c_chipmatch(wl->wlc->hw->d11core);
475 spin_unlock_bh(&wl->lock);
476 if (!status) {
477 brcms_err(wl->wlc->hw->d11core,
478 "wl: brcms_ops_stop: chipmatch failed\n");
479 return;
480 }
481
482 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false);
483
484 /* put driver in down state */
485 spin_lock_bh(&wl->lock);
486 brcms_down(wl);
487 spin_unlock_bh(&wl->lock);
488 }
489
490 static int
brcms_ops_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)491 brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
492 {
493 struct brcms_info *wl = hw->priv;
494
495 /* Just STA, AP and ADHOC for now */
496 if (vif->type != NL80211_IFTYPE_STATION &&
497 vif->type != NL80211_IFTYPE_AP &&
498 vif->type != NL80211_IFTYPE_ADHOC) {
499 brcms_err(wl->wlc->hw->d11core,
500 "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
501 __func__, vif->type);
502 return -EOPNOTSUPP;
503 }
504
505 spin_lock_bh(&wl->lock);
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 }
524
brcms_ops_config(struct ieee80211_hw * hw,u32 changed)525 static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
526 {
527 struct ieee80211_conf *conf = &hw->conf;
528 struct brcms_info *wl = hw->priv;
529 struct bcma_device *core = wl->wlc->hw->d11core;
530 int err = 0;
531 int new_int;
532
533 spin_lock_bh(&wl->lock);
534 if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
535 brcms_c_set_beacon_listen_interval(wl->wlc,
536 conf->listen_interval);
537 }
538 if (changed & IEEE80211_CONF_CHANGE_MONITOR)
539 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
540 __func__, conf->flags & IEEE80211_CONF_MONITOR ?
541 "true" : "false");
542 if (changed & IEEE80211_CONF_CHANGE_PS)
543 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
544 __func__, conf->flags & IEEE80211_CONF_PS ?
545 "true" : "false");
546
547 if (changed & IEEE80211_CONF_CHANGE_POWER) {
548 err = brcms_c_set_tx_power(wl->wlc, conf->power_level);
549 if (err < 0) {
550 brcms_err(core, "%s: Error setting power_level\n",
551 __func__);
552 goto config_out;
553 }
554 new_int = brcms_c_get_tx_power(wl->wlc);
555 if (new_int != conf->power_level)
556 brcms_err(core,
557 "%s: Power level req != actual, %d %d\n",
558 __func__, conf->power_level,
559 new_int);
560 }
561 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
562 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
563 conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
564 err = brcms_c_set_channel(wl->wlc,
565 conf->chandef.chan->hw_value);
566 else
567 err = -ENOTSUPP;
568 }
569 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
570 err = brcms_c_set_rate_limit(wl->wlc,
571 conf->short_frame_max_tx_count,
572 conf->long_frame_max_tx_count);
573
574 config_out:
575 spin_unlock_bh(&wl->lock);
576 return err;
577 }
578
579 static void
brcms_ops_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)580 brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
581 struct ieee80211_vif *vif,
582 struct ieee80211_bss_conf *info, u32 changed)
583 {
584 struct brcms_info *wl = hw->priv;
585 struct bcma_device *core = wl->wlc->hw->d11core;
586
587 if (changed & BSS_CHANGED_ASSOC) {
588 /* association status changed (associated/disassociated)
589 * also implies a change in the AID.
590 */
591 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
592 __func__, info->assoc ? "" : "dis");
593 spin_lock_bh(&wl->lock);
594 brcms_c_associate_upd(wl->wlc, info->assoc);
595 spin_unlock_bh(&wl->lock);
596 }
597 if (changed & BSS_CHANGED_ERP_SLOT) {
598 s8 val;
599
600 /* slot timing changed */
601 if (info->use_short_slot)
602 val = 1;
603 else
604 val = 0;
605 spin_lock_bh(&wl->lock);
606 brcms_c_set_shortslot_override(wl->wlc, val);
607 spin_unlock_bh(&wl->lock);
608 }
609
610 if (changed & BSS_CHANGED_HT) {
611 /* 802.11n parameters changed */
612 u16 mode = info->ht_operation_mode;
613
614 spin_lock_bh(&wl->lock);
615 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_CFG,
616 mode & IEEE80211_HT_OP_MODE_PROTECTION);
617 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_NONGF,
618 mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
619 brcms_c_protection_upd(wl->wlc, BRCMS_PROT_N_OBSS,
620 mode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT);
621 spin_unlock_bh(&wl->lock);
622 }
623 if (changed & BSS_CHANGED_BASIC_RATES) {
624 struct ieee80211_supported_band *bi;
625 u32 br_mask, i;
626 u16 rate;
627 struct brcm_rateset rs;
628 int error;
629
630 /* retrieve the current rates */
631 spin_lock_bh(&wl->lock);
632 brcms_c_get_current_rateset(wl->wlc, &rs);
633 spin_unlock_bh(&wl->lock);
634
635 br_mask = info->basic_rates;
636 bi = hw->wiphy->bands[brcms_c_get_curband(wl->wlc)];
637 for (i = 0; i < bi->n_bitrates; i++) {
638 /* convert to internal rate value */
639 rate = (bi->bitrates[i].bitrate << 1) / 10;
640
641 /* set/clear basic rate flag */
642 brcms_set_basic_rate(&rs, rate, br_mask & 1);
643 br_mask >>= 1;
644 }
645
646 /* update the rate set */
647 spin_lock_bh(&wl->lock);
648 error = brcms_c_set_rateset(wl->wlc, &rs);
649 spin_unlock_bh(&wl->lock);
650 if (error)
651 brcms_err(core, "changing basic rates failed: %d\n",
652 error);
653 }
654 if (changed & BSS_CHANGED_BEACON_INT) {
655 /* Beacon interval changed */
656 spin_lock_bh(&wl->lock);
657 brcms_c_set_beacon_period(wl->wlc, info->beacon_int);
658 spin_unlock_bh(&wl->lock);
659 }
660 if (changed & BSS_CHANGED_BSSID) {
661 /* BSSID changed, for whatever reason (IBSS and managed mode) */
662 spin_lock_bh(&wl->lock);
663 brcms_c_set_addrmatch(wl->wlc, RCM_BSSID_OFFSET, info->bssid);
664 spin_unlock_bh(&wl->lock);
665 }
666 if (changed & BSS_CHANGED_SSID) {
667 /* BSSID changed, for whatever reason (IBSS and managed mode) */
668 spin_lock_bh(&wl->lock);
669 brcms_c_set_ssid(wl->wlc, info->ssid, info->ssid_len);
670 spin_unlock_bh(&wl->lock);
671 }
672 if (changed & BSS_CHANGED_BEACON) {
673 /* Beacon data changed, retrieve new beacon (beaconing modes) */
674 struct sk_buff *beacon;
675 u16 tim_offset = 0;
676
677 spin_lock_bh(&wl->lock);
678 beacon = ieee80211_beacon_get_tim(hw, vif, &tim_offset, NULL);
679 brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset,
680 info->dtim_period);
681 spin_unlock_bh(&wl->lock);
682 }
683
684 if (changed & BSS_CHANGED_AP_PROBE_RESP) {
685 struct sk_buff *probe_resp;
686
687 spin_lock_bh(&wl->lock);
688 probe_resp = ieee80211_proberesp_get(hw, vif);
689 brcms_c_set_new_probe_resp(wl->wlc, probe_resp);
690 spin_unlock_bh(&wl->lock);
691 }
692
693 if (changed & BSS_CHANGED_BEACON_ENABLED) {
694 /* Beaconing should be enabled/disabled (beaconing modes) */
695 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
696 info->enable_beacon ? "true" : "false");
697 if (info->enable_beacon &&
698 hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
699 brcms_c_enable_probe_resp(wl->wlc, true);
700 } else {
701 brcms_c_enable_probe_resp(wl->wlc, false);
702 }
703 }
704
705 if (changed & BSS_CHANGED_CQM) {
706 /* Connection quality monitor config changed */
707 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
708 " (implement)\n", __func__, info->cqm_rssi_thold,
709 info->cqm_rssi_hyst);
710 }
711
712 if (changed & BSS_CHANGED_IBSS) {
713 /* IBSS join status changed */
714 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
715 __func__, info->ibss_joined ? "true" : "false");
716 }
717
718 if (changed & BSS_CHANGED_ARP_FILTER) {
719 /* Hardware ARP filter address list or state changed */
720 brcms_err(core, "%s: arp filtering: %d addresses"
721 " (implement)\n", __func__, info->arp_addr_cnt);
722 }
723
724 if (changed & BSS_CHANGED_QOS) {
725 /*
726 * QoS for this association was enabled/disabled.
727 * Note that it is only ever disabled for station mode.
728 */
729 brcms_err(core, "%s: qos enabled: %s (implement)\n",
730 __func__, info->qos ? "true" : "false");
731 }
732 return;
733 }
734
735 static void
brcms_ops_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)736 brcms_ops_configure_filter(struct ieee80211_hw *hw,
737 unsigned int changed_flags,
738 unsigned int *total_flags, u64 multicast)
739 {
740 struct brcms_info *wl = hw->priv;
741 struct bcma_device *core = wl->wlc->hw->d11core;
742
743 changed_flags &= MAC_FILTERS;
744 *total_flags &= MAC_FILTERS;
745
746 if (changed_flags & FIF_PROMISC_IN_BSS)
747 brcms_dbg_info(core, "FIF_PROMISC_IN_BSS\n");
748 if (changed_flags & FIF_ALLMULTI)
749 brcms_dbg_info(core, "FIF_ALLMULTI\n");
750 if (changed_flags & FIF_FCSFAIL)
751 brcms_dbg_info(core, "FIF_FCSFAIL\n");
752 if (changed_flags & FIF_CONTROL)
753 brcms_dbg_info(core, "FIF_CONTROL\n");
754 if (changed_flags & FIF_OTHER_BSS)
755 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
756 if (changed_flags & FIF_PSPOLL)
757 brcms_dbg_info(core, "FIF_PSPOLL\n");
758 if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
759 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
760
761 spin_lock_bh(&wl->lock);
762 brcms_c_mac_promisc(wl->wlc, *total_flags);
763 spin_unlock_bh(&wl->lock);
764 return;
765 }
766
brcms_ops_sw_scan_start(struct ieee80211_hw * hw)767 static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw)
768 {
769 struct brcms_info *wl = hw->priv;
770 spin_lock_bh(&wl->lock);
771 brcms_c_scan_start(wl->wlc);
772 spin_unlock_bh(&wl->lock);
773 return;
774 }
775
brcms_ops_sw_scan_complete(struct ieee80211_hw * hw)776 static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw)
777 {
778 struct brcms_info *wl = hw->priv;
779 spin_lock_bh(&wl->lock);
780 brcms_c_scan_stop(wl->wlc);
781 spin_unlock_bh(&wl->lock);
782 return;
783 }
784
785 static int
brcms_ops_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)786 brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
787 const struct ieee80211_tx_queue_params *params)
788 {
789 struct brcms_info *wl = hw->priv;
790
791 spin_lock_bh(&wl->lock);
792 brcms_c_wme_setparams(wl->wlc, queue, params, true);
793 spin_unlock_bh(&wl->lock);
794
795 return 0;
796 }
797
798 static int
brcms_ops_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)799 brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
800 struct ieee80211_sta *sta)
801 {
802 struct brcms_info *wl = hw->priv;
803 struct scb *scb = &wl->wlc->pri_scb;
804
805 brcms_c_init_scb(scb);
806
807 wl->pub->global_ampdu = &(scb->scb_ampdu);
808 wl->pub->global_ampdu->scb = scb;
809 wl->pub->global_ampdu->max_pdu = 16;
810
811 /*
812 * minstrel_ht initiates addBA on our behalf by calling
813 * ieee80211_start_tx_ba_session()
814 */
815 return 0;
816 }
817
818 static int
brcms_ops_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum ieee80211_ampdu_mlme_action action,struct ieee80211_sta * sta,u16 tid,u16 * ssn,u8 buf_size)819 brcms_ops_ampdu_action(struct ieee80211_hw *hw,
820 struct ieee80211_vif *vif,
821 enum ieee80211_ampdu_mlme_action action,
822 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
823 u8 buf_size)
824 {
825 struct brcms_info *wl = hw->priv;
826 struct scb *scb = &wl->wlc->pri_scb;
827 int status;
828
829 if (WARN_ON(scb->magic != SCB_MAGIC))
830 return -EIDRM;
831 switch (action) {
832 case IEEE80211_AMPDU_RX_START:
833 break;
834 case IEEE80211_AMPDU_RX_STOP:
835 break;
836 case IEEE80211_AMPDU_TX_START:
837 spin_lock_bh(&wl->lock);
838 status = brcms_c_aggregatable(wl->wlc, tid);
839 spin_unlock_bh(&wl->lock);
840 if (!status) {
841 brcms_err(wl->wlc->hw->d11core,
842 "START: tid %d is not agg\'able\n", tid);
843 return -EINVAL;
844 }
845 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
846 break;
847
848 case IEEE80211_AMPDU_TX_STOP_CONT:
849 case IEEE80211_AMPDU_TX_STOP_FLUSH:
850 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
851 spin_lock_bh(&wl->lock);
852 brcms_c_ampdu_flush(wl->wlc, sta, tid);
853 spin_unlock_bh(&wl->lock);
854 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
855 break;
856 case IEEE80211_AMPDU_TX_OPERATIONAL:
857 /*
858 * BA window size from ADDBA response ('buf_size') defines how
859 * many outstanding MPDUs are allowed for the BA stream by
860 * recipient and traffic class. 'ampdu_factor' gives maximum
861 * AMPDU size.
862 */
863 spin_lock_bh(&wl->lock);
864 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
865 (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
866 sta->ht_cap.ampdu_factor)) - 1);
867 spin_unlock_bh(&wl->lock);
868 /* Power save wakeup */
869 break;
870 default:
871 brcms_err(wl->wlc->hw->d11core,
872 "%s: Invalid command, ignoring\n", __func__);
873 }
874
875 return 0;
876 }
877
brcms_ops_rfkill_poll(struct ieee80211_hw * hw)878 static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
879 {
880 struct brcms_info *wl = hw->priv;
881 bool blocked;
882
883 spin_lock_bh(&wl->lock);
884 blocked = brcms_c_check_radio_disabled(wl->wlc);
885 spin_unlock_bh(&wl->lock);
886
887 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
888 }
889
brcms_tx_flush_completed(struct brcms_info * wl)890 static bool brcms_tx_flush_completed(struct brcms_info *wl)
891 {
892 bool result;
893
894 spin_lock_bh(&wl->lock);
895 result = brcms_c_tx_flush_completed(wl->wlc);
896 spin_unlock_bh(&wl->lock);
897 return result;
898 }
899
brcms_ops_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)900 static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
901 u32 queues, bool drop)
902 {
903 struct brcms_info *wl = hw->priv;
904 int ret;
905
906 no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
907
908 ret = wait_event_timeout(wl->tx_flush_wq,
909 brcms_tx_flush_completed(wl),
910 msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
911
912 brcms_dbg_mac80211(wl->wlc->hw->d11core,
913 "ret=%d\n", jiffies_to_msecs(ret));
914 }
915
brcms_ops_get_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)916 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
917 {
918 struct brcms_info *wl = hw->priv;
919 u64 tsf;
920
921 spin_lock_bh(&wl->lock);
922 tsf = brcms_c_tsf_get(wl->wlc);
923 spin_unlock_bh(&wl->lock);
924
925 return tsf;
926 }
927
brcms_ops_set_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u64 tsf)928 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
929 struct ieee80211_vif *vif, u64 tsf)
930 {
931 struct brcms_info *wl = hw->priv;
932
933 spin_lock_bh(&wl->lock);
934 brcms_c_tsf_set(wl->wlc, tsf);
935 spin_unlock_bh(&wl->lock);
936 }
937
938 static const struct ieee80211_ops brcms_ops = {
939 .tx = brcms_ops_tx,
940 .start = brcms_ops_start,
941 .stop = brcms_ops_stop,
942 .add_interface = brcms_ops_add_interface,
943 .remove_interface = brcms_ops_remove_interface,
944 .config = brcms_ops_config,
945 .bss_info_changed = brcms_ops_bss_info_changed,
946 .configure_filter = brcms_ops_configure_filter,
947 .sw_scan_start = brcms_ops_sw_scan_start,
948 .sw_scan_complete = brcms_ops_sw_scan_complete,
949 .conf_tx = brcms_ops_conf_tx,
950 .sta_add = brcms_ops_sta_add,
951 .ampdu_action = brcms_ops_ampdu_action,
952 .rfkill_poll = brcms_ops_rfkill_poll,
953 .flush = brcms_ops_flush,
954 .get_tsf = brcms_ops_get_tsf,
955 .set_tsf = brcms_ops_set_tsf,
956 };
957
brcms_dpc(unsigned long data)958 void brcms_dpc(unsigned long data)
959 {
960 struct brcms_info *wl;
961
962 wl = (struct brcms_info *) data;
963
964 spin_lock_bh(&wl->lock);
965
966 /* call the common second level interrupt handler */
967 if (wl->pub->up) {
968 if (wl->resched) {
969 unsigned long flags;
970
971 spin_lock_irqsave(&wl->isr_lock, flags);
972 brcms_c_intrsupd(wl->wlc);
973 spin_unlock_irqrestore(&wl->isr_lock, flags);
974 }
975
976 wl->resched = brcms_c_dpc(wl->wlc, true);
977 }
978
979 /* brcms_c_dpc() may bring the driver down */
980 if (!wl->pub->up)
981 goto done;
982
983 /* re-schedule dpc */
984 if (wl->resched)
985 tasklet_schedule(&wl->tasklet);
986 else
987 /* re-enable interrupts */
988 brcms_intrson(wl);
989
990 done:
991 spin_unlock_bh(&wl->lock);
992 wake_up(&wl->tx_flush_wq);
993 }
994
brcms_isr(int irq,void * dev_id)995 static irqreturn_t brcms_isr(int irq, void *dev_id)
996 {
997 struct brcms_info *wl;
998 irqreturn_t ret = IRQ_NONE;
999
1000 wl = (struct brcms_info *) dev_id;
1001
1002 spin_lock(&wl->isr_lock);
1003
1004 /* call common first level interrupt handler */
1005 if (brcms_c_isr(wl->wlc)) {
1006 /* schedule second level handler */
1007 tasklet_schedule(&wl->tasklet);
1008 ret = IRQ_HANDLED;
1009 }
1010
1011 spin_unlock(&wl->isr_lock);
1012
1013 return ret;
1014 }
1015
1016 /*
1017 * is called in brcms_pci_probe() context, therefore no locking required.
1018 */
ieee_hw_rate_init(struct ieee80211_hw * hw)1019 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1020 {
1021 struct brcms_info *wl = hw->priv;
1022 struct brcms_c_info *wlc = wl->wlc;
1023 struct ieee80211_supported_band *band;
1024 int has_5g = 0;
1025 u16 phy_type;
1026
1027 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
1028 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1029
1030 phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1031 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1032 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1033 *band = brcms_band_2GHz_nphy_template;
1034 if (phy_type == PHY_TYPE_LCN) {
1035 /* Single stream */
1036 band->ht_cap.mcs.rx_mask[1] = 0;
1037 band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1038 }
1039 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
1040 } else {
1041 return -EPERM;
1042 }
1043
1044 /* Assume all bands use the same phy. True for 11n devices. */
1045 if (wl->pub->_nbands > 1) {
1046 has_5g++;
1047 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1048 band = &wlc->bandstate[BAND_5G_INDEX]->band;
1049 *band = brcms_band_5GHz_nphy_template;
1050 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
1051 } else {
1052 return -EPERM;
1053 }
1054 }
1055 return 0;
1056 }
1057
1058 /*
1059 * is called in brcms_pci_probe() context, therefore no locking required.
1060 */
ieee_hw_init(struct ieee80211_hw * hw)1061 static int ieee_hw_init(struct ieee80211_hw *hw)
1062 {
1063 hw->flags = IEEE80211_HW_SIGNAL_DBM
1064 /* | IEEE80211_HW_CONNECTION_MONITOR What is this? */
1065 | IEEE80211_HW_REPORTS_TX_ACK_STATUS
1066 | IEEE80211_HW_AMPDU_AGGREGATION;
1067
1068 hw->extra_tx_headroom = brcms_c_get_header_len();
1069 hw->queues = N_TX_QUEUES;
1070 hw->max_rates = 2; /* Primary rate and 1 fallback rate */
1071
1072 /* channel change time is dependent on chip and band */
1073 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1074 BIT(NL80211_IFTYPE_AP) |
1075 BIT(NL80211_IFTYPE_ADHOC);
1076
1077 /*
1078 * deactivate sending probe responses by ucude, because this will
1079 * cause problems when WPS is used.
1080 *
1081 * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1082 */
1083
1084 hw->rate_control_algorithm = "minstrel_ht";
1085
1086 hw->sta_data_size = 0;
1087 return ieee_hw_rate_init(hw);
1088 }
1089
1090 /**
1091 * attach to the WL device.
1092 *
1093 * Attach to the WL device identified by vendor and device parameters.
1094 * regs is a host accessible memory address pointing to WL device registers.
1095 *
1096 * is called in brcms_bcma_probe() context, therefore no locking required.
1097 */
brcms_attach(struct bcma_device * pdev)1098 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1099 {
1100 struct brcms_info *wl = NULL;
1101 int unit, err;
1102 struct ieee80211_hw *hw;
1103 u8 perm[ETH_ALEN];
1104
1105 unit = n_adapters_found;
1106 err = 0;
1107
1108 if (unit < 0)
1109 return NULL;
1110
1111 /* allocate private info */
1112 hw = bcma_get_drvdata(pdev);
1113 if (hw != NULL)
1114 wl = hw->priv;
1115 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1116 return NULL;
1117 wl->wiphy = hw->wiphy;
1118
1119 atomic_set(&wl->callbacks, 0);
1120
1121 init_waitqueue_head(&wl->tx_flush_wq);
1122
1123 /* setup the bottom half handler */
1124 tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1125
1126 spin_lock_init(&wl->lock);
1127 spin_lock_init(&wl->isr_lock);
1128
1129 /* common load-time initialization */
1130 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1131 if (!wl->wlc) {
1132 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1133 KBUILD_MODNAME, err);
1134 goto fail;
1135 }
1136 wl->pub = brcms_c_pub(wl->wlc);
1137
1138 wl->pub->ieee_hw = hw;
1139
1140 /* register our interrupt handler */
1141 if (request_irq(pdev->irq, brcms_isr,
1142 IRQF_SHARED, KBUILD_MODNAME, wl)) {
1143 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1144 goto fail;
1145 }
1146 wl->irq = pdev->irq;
1147
1148 /* register module */
1149 brcms_c_module_register(wl->pub, "linux", wl, NULL);
1150
1151 if (ieee_hw_init(hw)) {
1152 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1153 __func__);
1154 goto fail;
1155 }
1156
1157 brcms_c_regd_init(wl->wlc);
1158
1159 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1160 if (WARN_ON(!is_valid_ether_addr(perm)))
1161 goto fail;
1162 SET_IEEE80211_PERM_ADDR(hw, perm);
1163
1164 err = ieee80211_register_hw(hw);
1165 if (err)
1166 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1167 "%d\n", __func__, err);
1168
1169 if (wl->pub->srom_ccode[0] &&
1170 regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1171 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1172
1173 brcms_debugfs_attach(wl->pub);
1174 brcms_debugfs_create_files(wl->pub);
1175 n_adapters_found++;
1176 return wl;
1177
1178 fail:
1179 brcms_free(wl);
1180 return NULL;
1181 }
1182
1183
1184
1185 /**
1186 * determines if a device is a WL device, and if so, attaches it.
1187 *
1188 * This function determines if a device pointed to by pdev is a WL device,
1189 * and if so, performs a brcms_attach() on it.
1190 *
1191 * Perimeter lock is initialized in the course of this function.
1192 */
brcms_bcma_probe(struct bcma_device * pdev)1193 static int brcms_bcma_probe(struct bcma_device *pdev)
1194 {
1195 struct brcms_info *wl;
1196 struct ieee80211_hw *hw;
1197
1198 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1199 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1200 pdev->irq);
1201
1202 if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1203 (pdev->id.id != BCMA_CORE_80211))
1204 return -ENODEV;
1205
1206 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1207 if (!hw) {
1208 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1209 return -ENOMEM;
1210 }
1211
1212 SET_IEEE80211_DEV(hw, &pdev->dev);
1213
1214 bcma_set_drvdata(pdev, hw);
1215
1216 memset(hw->priv, 0, sizeof(*wl));
1217
1218 wl = brcms_attach(pdev);
1219 if (!wl) {
1220 pr_err("%s: brcms_attach failed!\n", __func__);
1221 return -ENODEV;
1222 }
1223 brcms_led_register(wl);
1224
1225 return 0;
1226 }
1227
brcms_suspend(struct bcma_device * pdev)1228 static int brcms_suspend(struct bcma_device *pdev)
1229 {
1230 struct brcms_info *wl;
1231 struct ieee80211_hw *hw;
1232
1233 hw = bcma_get_drvdata(pdev);
1234 wl = hw->priv;
1235 if (!wl) {
1236 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1237 __func__);
1238 return -ENODEV;
1239 }
1240
1241 /* only need to flag hw is down for proper resume */
1242 spin_lock_bh(&wl->lock);
1243 wl->pub->hw_up = false;
1244 spin_unlock_bh(&wl->lock);
1245
1246 brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1247
1248 return 0;
1249 }
1250
brcms_resume(struct bcma_device * pdev)1251 static int brcms_resume(struct bcma_device *pdev)
1252 {
1253 return 0;
1254 }
1255
1256 static struct bcma_driver brcms_bcma_driver = {
1257 .name = KBUILD_MODNAME,
1258 .probe = brcms_bcma_probe,
1259 .suspend = brcms_suspend,
1260 .resume = brcms_resume,
1261 .remove = brcms_remove,
1262 .id_table = brcms_coreid_table,
1263 };
1264
1265 /**
1266 * This is the main entry point for the brcmsmac driver.
1267 *
1268 * This function is scheduled upon module initialization and
1269 * does the driver registration, which result in brcms_bcma_probe()
1270 * call resulting in the driver bringup.
1271 */
brcms_driver_init(struct work_struct * work)1272 static void brcms_driver_init(struct work_struct *work)
1273 {
1274 int error;
1275
1276 error = bcma_driver_register(&brcms_bcma_driver);
1277 if (error)
1278 pr_err("%s: register returned %d\n", __func__, error);
1279 }
1280
1281 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1282
brcms_module_init(void)1283 static int __init brcms_module_init(void)
1284 {
1285 brcms_debugfs_init();
1286 if (!schedule_work(&brcms_driver_work))
1287 return -EBUSY;
1288
1289 return 0;
1290 }
1291
1292 /**
1293 * This function unloads the brcmsmac driver from the system.
1294 *
1295 * This function unconditionally unloads the brcmsmac driver module from the
1296 * system.
1297 *
1298 */
brcms_module_exit(void)1299 static void __exit brcms_module_exit(void)
1300 {
1301 cancel_work_sync(&brcms_driver_work);
1302 bcma_driver_unregister(&brcms_bcma_driver);
1303 brcms_debugfs_exit();
1304 }
1305
1306 module_init(brcms_module_init);
1307 module_exit(brcms_module_exit);
1308
1309 /*
1310 * precondition: perimeter lock has been acquired
1311 */
brcms_txflowcontrol(struct brcms_info * wl,struct brcms_if * wlif,bool state,int prio)1312 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1313 bool state, int prio)
1314 {
1315 brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1316 }
1317
1318 /*
1319 * precondition: perimeter lock has been acquired
1320 */
brcms_init(struct brcms_info * wl)1321 void brcms_init(struct brcms_info *wl)
1322 {
1323 brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1324 wl->pub->unit);
1325 brcms_reset(wl);
1326 brcms_c_init(wl->wlc, wl->mute_tx);
1327 }
1328
1329 /*
1330 * precondition: perimeter lock has been acquired
1331 */
brcms_reset(struct brcms_info * wl)1332 uint brcms_reset(struct brcms_info *wl)
1333 {
1334 brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1335 brcms_c_reset(wl->wlc);
1336
1337 /* dpc will not be rescheduled */
1338 wl->resched = false;
1339
1340 /* inform publicly that interface is down */
1341 wl->pub->up = false;
1342
1343 return 0;
1344 }
1345
brcms_fatal_error(struct brcms_info * wl)1346 void brcms_fatal_error(struct brcms_info *wl)
1347 {
1348 brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1349 wl->wlc->pub->unit);
1350 brcms_reset(wl);
1351 ieee80211_restart_hw(wl->pub->ieee_hw);
1352 }
1353
1354 /*
1355 * These are interrupt on/off entry points. Disable interrupts
1356 * during interrupt state transition.
1357 */
brcms_intrson(struct brcms_info * wl)1358 void brcms_intrson(struct brcms_info *wl)
1359 {
1360 unsigned long flags;
1361
1362 spin_lock_irqsave(&wl->isr_lock, flags);
1363 brcms_c_intrson(wl->wlc);
1364 spin_unlock_irqrestore(&wl->isr_lock, flags);
1365 }
1366
brcms_intrsoff(struct brcms_info * wl)1367 u32 brcms_intrsoff(struct brcms_info *wl)
1368 {
1369 unsigned long flags;
1370 u32 status;
1371
1372 spin_lock_irqsave(&wl->isr_lock, flags);
1373 status = brcms_c_intrsoff(wl->wlc);
1374 spin_unlock_irqrestore(&wl->isr_lock, flags);
1375 return status;
1376 }
1377
brcms_intrsrestore(struct brcms_info * wl,u32 macintmask)1378 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1379 {
1380 unsigned long flags;
1381
1382 spin_lock_irqsave(&wl->isr_lock, flags);
1383 brcms_c_intrsrestore(wl->wlc, macintmask);
1384 spin_unlock_irqrestore(&wl->isr_lock, flags);
1385 }
1386
1387 /*
1388 * precondition: perimeter lock has been acquired
1389 */
brcms_up(struct brcms_info * wl)1390 int brcms_up(struct brcms_info *wl)
1391 {
1392 int error = 0;
1393
1394 if (wl->pub->up)
1395 return 0;
1396
1397 error = brcms_c_up(wl->wlc);
1398
1399 return error;
1400 }
1401
1402 /*
1403 * precondition: perimeter lock has been acquired
1404 */
brcms_down(struct brcms_info * wl)1405 void brcms_down(struct brcms_info *wl)
1406 {
1407 uint callbacks, ret_val = 0;
1408
1409 /* call common down function */
1410 ret_val = brcms_c_down(wl->wlc);
1411 callbacks = atomic_read(&wl->callbacks) - ret_val;
1412
1413 /* wait for down callbacks to complete */
1414 spin_unlock_bh(&wl->lock);
1415
1416 /* For HIGH_only driver, it's important to actually schedule other work,
1417 * not just spin wait since everything runs at schedule level
1418 */
1419 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1420
1421 spin_lock_bh(&wl->lock);
1422 }
1423
1424 /*
1425 * precondition: perimeter lock is not acquired
1426 */
_brcms_timer(struct work_struct * work)1427 static void _brcms_timer(struct work_struct *work)
1428 {
1429 struct brcms_timer *t = container_of(work, struct brcms_timer,
1430 dly_wrk.work);
1431
1432 spin_lock_bh(&t->wl->lock);
1433
1434 if (t->set) {
1435 if (t->periodic) {
1436 atomic_inc(&t->wl->callbacks);
1437 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1438 &t->dly_wrk,
1439 msecs_to_jiffies(t->ms));
1440 } else {
1441 t->set = false;
1442 }
1443
1444 t->fn(t->arg);
1445 }
1446
1447 atomic_dec(&t->wl->callbacks);
1448
1449 spin_unlock_bh(&t->wl->lock);
1450 }
1451
1452 /*
1453 * Adds a timer to the list. Caller supplies a timer function.
1454 * Is called from wlc.
1455 *
1456 * precondition: perimeter lock has been acquired
1457 */
brcms_init_timer(struct brcms_info * wl,void (* fn)(void * arg),void * arg,const char * name)1458 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1459 void (*fn) (void *arg),
1460 void *arg, const char *name)
1461 {
1462 struct brcms_timer *t;
1463
1464 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1465 if (!t)
1466 return NULL;
1467
1468 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1469 t->wl = wl;
1470 t->fn = fn;
1471 t->arg = arg;
1472 t->next = wl->timers;
1473 wl->timers = t;
1474
1475 #ifdef DEBUG
1476 t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1477 if (t->name)
1478 strcpy(t->name, name);
1479 #endif
1480
1481 return t;
1482 }
1483
1484 /*
1485 * adds only the kernel timer since it's going to be more accurate
1486 * as well as it's easier to make it periodic
1487 *
1488 * precondition: perimeter lock has been acquired
1489 */
brcms_add_timer(struct brcms_timer * t,uint ms,int periodic)1490 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1491 {
1492 struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1493
1494 #ifdef DEBUG
1495 if (t->set)
1496 brcms_dbg_info(t->wl->wlc->hw->d11core,
1497 "%s: Already set. Name: %s, per %d\n",
1498 __func__, t->name, periodic);
1499 #endif
1500 t->ms = ms;
1501 t->periodic = (bool) periodic;
1502 if (!t->set) {
1503 t->set = true;
1504 atomic_inc(&t->wl->callbacks);
1505 }
1506
1507 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1508 }
1509
1510 /*
1511 * return true if timer successfully deleted, false if still pending
1512 *
1513 * precondition: perimeter lock has been acquired
1514 */
brcms_del_timer(struct brcms_timer * t)1515 bool brcms_del_timer(struct brcms_timer *t)
1516 {
1517 if (t->set) {
1518 t->set = false;
1519 if (!cancel_delayed_work(&t->dly_wrk))
1520 return false;
1521
1522 atomic_dec(&t->wl->callbacks);
1523 }
1524
1525 return true;
1526 }
1527
1528 /*
1529 * precondition: perimeter lock has been acquired
1530 */
brcms_free_timer(struct brcms_timer * t)1531 void brcms_free_timer(struct brcms_timer *t)
1532 {
1533 struct brcms_info *wl = t->wl;
1534 struct brcms_timer *tmp;
1535
1536 /* delete the timer in case it is active */
1537 brcms_del_timer(t);
1538
1539 if (wl->timers == t) {
1540 wl->timers = wl->timers->next;
1541 #ifdef DEBUG
1542 kfree(t->name);
1543 #endif
1544 kfree(t);
1545 return;
1546
1547 }
1548
1549 tmp = wl->timers;
1550 while (tmp) {
1551 if (tmp->next == t) {
1552 tmp->next = t->next;
1553 #ifdef DEBUG
1554 kfree(t->name);
1555 #endif
1556 kfree(t);
1557 return;
1558 }
1559 tmp = tmp->next;
1560 }
1561
1562 }
1563
1564 /*
1565 * precondition: perimeter lock has been acquired
1566 */
brcms_ucode_init_buf(struct brcms_info * wl,void ** pbuf,u32 idx)1567 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1568 {
1569 int i, entry;
1570 const u8 *pdata;
1571 struct firmware_hdr *hdr;
1572 for (i = 0; i < wl->fw.fw_cnt; i++) {
1573 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1574 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1575 entry++, hdr++) {
1576 u32 len = le32_to_cpu(hdr->len);
1577 if (le32_to_cpu(hdr->idx) == idx) {
1578 pdata = wl->fw.fw_bin[i]->data +
1579 le32_to_cpu(hdr->offset);
1580 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1581 if (*pbuf == NULL)
1582 goto fail;
1583
1584 return 0;
1585 }
1586 }
1587 }
1588 brcms_err(wl->wlc->hw->d11core,
1589 "ERROR: ucode buf tag:%d can not be found!\n", idx);
1590 *pbuf = NULL;
1591 fail:
1592 return -ENODATA;
1593 }
1594
1595 /*
1596 * Precondition: Since this function is called in brcms_bcma_probe() context,
1597 * no locking is required.
1598 */
brcms_ucode_init_uint(struct brcms_info * wl,size_t * n_bytes,u32 idx)1599 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1600 {
1601 int i, entry;
1602 const u8 *pdata;
1603 struct firmware_hdr *hdr;
1604 for (i = 0; i < wl->fw.fw_cnt; i++) {
1605 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1606 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1607 entry++, hdr++) {
1608 if (le32_to_cpu(hdr->idx) == idx) {
1609 pdata = wl->fw.fw_bin[i]->data +
1610 le32_to_cpu(hdr->offset);
1611 if (le32_to_cpu(hdr->len) != 4) {
1612 brcms_err(wl->wlc->hw->d11core,
1613 "ERROR: fw hdr len\n");
1614 return -ENOMSG;
1615 }
1616 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1617 return 0;
1618 }
1619 }
1620 }
1621 brcms_err(wl->wlc->hw->d11core,
1622 "ERROR: ucode tag:%d can not be found!\n", idx);
1623 return -ENOMSG;
1624 }
1625
1626 /*
1627 * precondition: can both be called locked and unlocked
1628 */
brcms_ucode_free_buf(void * p)1629 void brcms_ucode_free_buf(void *p)
1630 {
1631 kfree(p);
1632 }
1633
1634 /*
1635 * checks validity of all firmware images loaded from user space
1636 *
1637 * Precondition: Since this function is called in brcms_bcma_probe() context,
1638 * no locking is required.
1639 */
brcms_check_firmwares(struct brcms_info * wl)1640 int brcms_check_firmwares(struct brcms_info *wl)
1641 {
1642 int i;
1643 int entry;
1644 int rc = 0;
1645 const struct firmware *fw;
1646 const struct firmware *fw_hdr;
1647 struct firmware_hdr *ucode_hdr;
1648 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1649 fw = wl->fw.fw_bin[i];
1650 fw_hdr = wl->fw.fw_hdr[i];
1651 if (fw == NULL && fw_hdr == NULL) {
1652 break;
1653 } else if (fw == NULL || fw_hdr == NULL) {
1654 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1655 __func__);
1656 rc = -EBADF;
1657 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1658 wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1659 "size %zu/%zu\n", __func__, fw_hdr->size,
1660 sizeof(struct firmware_hdr));
1661 rc = -EBADF;
1662 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1663 wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1664 __func__, fw->size);
1665 rc = -EBADF;
1666 } else {
1667 /* check if ucode section overruns firmware image */
1668 ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1669 for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1670 !rc; entry++, ucode_hdr++) {
1671 if (le32_to_cpu(ucode_hdr->offset) +
1672 le32_to_cpu(ucode_hdr->len) >
1673 fw->size) {
1674 wiphy_err(wl->wiphy,
1675 "%s: conflicting bin/hdr\n",
1676 __func__);
1677 rc = -EBADF;
1678 }
1679 }
1680 }
1681 }
1682 if (rc == 0 && wl->fw.fw_cnt != i) {
1683 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1684 wl->fw.fw_cnt);
1685 rc = -EBADF;
1686 }
1687 return rc;
1688 }
1689
1690 /*
1691 * precondition: perimeter lock has been acquired
1692 */
brcms_rfkill_set_hw_state(struct brcms_info * wl)1693 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1694 {
1695 bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1696
1697 spin_unlock_bh(&wl->lock);
1698 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1699 if (blocked)
1700 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1701 spin_lock_bh(&wl->lock);
1702 return blocked;
1703 }
1704