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x86/xen: resume timer irqs early
[linux/fpc-iii.git] / drivers / net / wireless / brcm80211 / brcmsmac / mac80211_if.c
blob03a56dfba2dbc144c2ab26f8fb829e9fa406be17
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_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
129 IEEE80211_CHAN_NO_HT40PLUS),
130 CHAN2GHZ(13, 2472,
131 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
132 IEEE80211_CHAN_NO_HT40PLUS),
133 CHAN2GHZ(14, 2484,
134 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_IBSS |
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 | IEEE80211_CHAN_NO_IBSS |
148 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
149 CHAN5GHZ(56,
150 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
151 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
152 CHAN5GHZ(60,
153 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
154 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
155 CHAN5GHZ(64,
156 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
157 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
158 /* MID */
159 CHAN5GHZ(100,
160 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
161 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
162 CHAN5GHZ(104,
163 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
164 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
165 CHAN5GHZ(108,
166 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
167 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
168 CHAN5GHZ(112,
169 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
170 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
171 CHAN5GHZ(116,
172 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
173 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
174 CHAN5GHZ(120,
175 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
176 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
177 CHAN5GHZ(124,
178 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
179 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
180 CHAN5GHZ(128,
181 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
182 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
183 CHAN5GHZ(132,
184 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
185 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40MINUS),
186 CHAN5GHZ(136,
187 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
188 IEEE80211_CHAN_PASSIVE_SCAN | IEEE80211_CHAN_NO_HT40PLUS),
189 CHAN5GHZ(140,
190 IEEE80211_CHAN_RADAR | IEEE80211_CHAN_NO_IBSS |
191 IEEE80211_CHAN_PASSIVE_SCAN | 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 */
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 */
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 */
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 */
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 */
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
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
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
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
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
521 brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
522 {
523 }
524
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
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
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
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
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
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
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
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
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
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
900 static void brcms_ops_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
901 {
902 struct brcms_info *wl = hw->priv;
903 int ret;
904
905 no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
906
907 ret = wait_event_timeout(wl->tx_flush_wq,
908 brcms_tx_flush_completed(wl),
909 msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
910
911 brcms_dbg_mac80211(wl->wlc->hw->d11core,
912 "ret=%d\n", jiffies_to_msecs(ret));
913 }
914
915 static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
916 {
917 struct brcms_info *wl = hw->priv;
918 u64 tsf;
919
920 spin_lock_bh(&wl->lock);
921 tsf = brcms_c_tsf_get(wl->wlc);
922 spin_unlock_bh(&wl->lock);
923
924 return tsf;
925 }
926
927 static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
928 struct ieee80211_vif *vif, u64 tsf)
929 {
930 struct brcms_info *wl = hw->priv;
931
932 spin_lock_bh(&wl->lock);
933 brcms_c_tsf_set(wl->wlc, tsf);
934 spin_unlock_bh(&wl->lock);
935 }
936
937 static const struct ieee80211_ops brcms_ops = {
938 .tx = brcms_ops_tx,
939 .start = brcms_ops_start,
940 .stop = brcms_ops_stop,
941 .add_interface = brcms_ops_add_interface,
942 .remove_interface = brcms_ops_remove_interface,
943 .config = brcms_ops_config,
944 .bss_info_changed = brcms_ops_bss_info_changed,
945 .configure_filter = brcms_ops_configure_filter,
946 .sw_scan_start = brcms_ops_sw_scan_start,
947 .sw_scan_complete = brcms_ops_sw_scan_complete,
948 .conf_tx = brcms_ops_conf_tx,
949 .sta_add = brcms_ops_sta_add,
950 .ampdu_action = brcms_ops_ampdu_action,
951 .rfkill_poll = brcms_ops_rfkill_poll,
952 .flush = brcms_ops_flush,
953 .get_tsf = brcms_ops_get_tsf,
954 .set_tsf = brcms_ops_set_tsf,
955 };
956
957 void brcms_dpc(unsigned long data)
958 {
959 struct brcms_info *wl;
960
961 wl = (struct brcms_info *) data;
962
963 spin_lock_bh(&wl->lock);
964
965 /* call the common second level interrupt handler */
966 if (wl->pub->up) {
967 if (wl->resched) {
968 unsigned long flags;
969
970 spin_lock_irqsave(&wl->isr_lock, flags);
971 brcms_c_intrsupd(wl->wlc);
972 spin_unlock_irqrestore(&wl->isr_lock, flags);
973 }
974
975 wl->resched = brcms_c_dpc(wl->wlc, true);
976 }
977
978 /* brcms_c_dpc() may bring the driver down */
979 if (!wl->pub->up)
980 goto done;
981
982 /* re-schedule dpc */
983 if (wl->resched)
984 tasklet_schedule(&wl->tasklet);
985 else
986 /* re-enable interrupts */
987 brcms_intrson(wl);
988
989 done:
990 spin_unlock_bh(&wl->lock);
991 wake_up(&wl->tx_flush_wq);
992 }
993
994 static irqreturn_t brcms_isr(int irq, void *dev_id)
995 {
996 struct brcms_info *wl;
997 irqreturn_t ret = IRQ_NONE;
998
999 wl = (struct brcms_info *) dev_id;
1000
1001 spin_lock(&wl->isr_lock);
1002
1003 /* call common first level interrupt handler */
1004 if (brcms_c_isr(wl->wlc)) {
1005 /* schedule second level handler */
1006 tasklet_schedule(&wl->tasklet);
1007 ret = IRQ_HANDLED;
1008 }
1009
1010 spin_unlock(&wl->isr_lock);
1011
1012 return ret;
1013 }
1014
1015 /*
1016 * is called in brcms_pci_probe() context, therefore no locking required.
1017 */
1018 static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1019 {
1020 struct brcms_info *wl = hw->priv;
1021 struct brcms_c_info *wlc = wl->wlc;
1022 struct ieee80211_supported_band *band;
1023 int has_5g = 0;
1024 u16 phy_type;
1025
1026 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
1027 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1028
1029 phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1030 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1031 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1032 *band = brcms_band_2GHz_nphy_template;
1033 if (phy_type == PHY_TYPE_LCN) {
1034 /* Single stream */
1035 band->ht_cap.mcs.rx_mask[1] = 0;
1036 band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
1037 }
1038 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
1039 } else {
1040 return -EPERM;
1041 }
1042
1043 /* Assume all bands use the same phy. True for 11n devices. */
1044 if (wl->pub->_nbands > 1) {
1045 has_5g++;
1046 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1047 band = &wlc->bandstate[BAND_5G_INDEX]->band;
1048 *band = brcms_band_5GHz_nphy_template;
1049 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
1050 } else {
1051 return -EPERM;
1052 }
1053 }
1054 return 0;
1055 }
1056
1057 /*
1058 * is called in brcms_pci_probe() context, therefore no locking required.
1059 */
1060 static int ieee_hw_init(struct ieee80211_hw *hw)
1061 {
1062 hw->flags = IEEE80211_HW_SIGNAL_DBM
1063 /* | IEEE80211_HW_CONNECTION_MONITOR What is this? */
1064 | IEEE80211_HW_REPORTS_TX_ACK_STATUS
1065 | IEEE80211_HW_AMPDU_AGGREGATION;
1066
1067 hw->extra_tx_headroom = brcms_c_get_header_len();
1068 hw->queues = N_TX_QUEUES;
1069 hw->max_rates = 2; /* Primary rate and 1 fallback rate */
1070
1071 /* channel change time is dependent on chip and band */
1072 hw->channel_change_time = 7 * 1000;
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 * brcms_attach is not defined as static because in the case where no bus
1097 * is defined, wl_attach will never be called, and thus, gcc will issue
1098 * a warning that this function is defined but not used if we declare
1099 * it as static.
1100 *
1101 *
1102 * is called in brcms_bcma_probe() context, therefore no locking required.
1103 */
1104 static struct brcms_info *brcms_attach(struct bcma_device *pdev)
1105 {
1106 struct brcms_info *wl = NULL;
1107 int unit, err;
1108 struct ieee80211_hw *hw;
1109 u8 perm[ETH_ALEN];
1110
1111 unit = n_adapters_found;
1112 err = 0;
1113
1114 if (unit < 0)
1115 return NULL;
1116
1117 /* allocate private info */
1118 hw = bcma_get_drvdata(pdev);
1119 if (hw != NULL)
1120 wl = hw->priv;
1121 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1122 return NULL;
1123 wl->wiphy = hw->wiphy;
1124
1125 atomic_set(&wl->callbacks, 0);
1126
1127 init_waitqueue_head(&wl->tx_flush_wq);
1128
1129 /* setup the bottom half handler */
1130 tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1131
1132 spin_lock_init(&wl->lock);
1133 spin_lock_init(&wl->isr_lock);
1134
1135 /* common load-time initialization */
1136 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
1137 if (!wl->wlc) {
1138 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1139 KBUILD_MODNAME, err);
1140 goto fail;
1141 }
1142 wl->pub = brcms_c_pub(wl->wlc);
1143
1144 wl->pub->ieee_hw = hw;
1145
1146 /* register our interrupt handler */
1147 if (request_irq(pdev->irq, brcms_isr,
1148 IRQF_SHARED, KBUILD_MODNAME, wl)) {
1149 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1150 goto fail;
1151 }
1152 wl->irq = pdev->irq;
1153
1154 /* register module */
1155 brcms_c_module_register(wl->pub, "linux", wl, NULL);
1156
1157 if (ieee_hw_init(hw)) {
1158 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1159 __func__);
1160 goto fail;
1161 }
1162
1163 brcms_c_regd_init(wl->wlc);
1164
1165 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1166 if (WARN_ON(!is_valid_ether_addr(perm)))
1167 goto fail;
1168 SET_IEEE80211_PERM_ADDR(hw, perm);
1169
1170 err = ieee80211_register_hw(hw);
1171 if (err)
1172 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1173 "%d\n", __func__, err);
1174
1175 if (wl->pub->srom_ccode[0] &&
1176 regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1177 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
1178
1179 brcms_debugfs_attach(wl->pub);
1180 brcms_debugfs_create_files(wl->pub);
1181 n_adapters_found++;
1182 return wl;
1183
1184 fail:
1185 brcms_free(wl);
1186 return NULL;
1187 }
1188
1189
1190
1191 /**
1192 * determines if a device is a WL device, and if so, attaches it.
1193 *
1194 * This function determines if a device pointed to by pdev is a WL device,
1195 * and if so, performs a brcms_attach() on it.
1196 *
1197 * Perimeter lock is initialized in the course of this function.
1198 */
1199 static int brcms_bcma_probe(struct bcma_device *pdev)
1200 {
1201 struct brcms_info *wl;
1202 struct ieee80211_hw *hw;
1203
1204 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1205 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
1206 pdev->irq);
1207
1208 if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1209 (pdev->id.id != BCMA_CORE_80211))
1210 return -ENODEV;
1211
1212 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1213 if (!hw) {
1214 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1215 return -ENOMEM;
1216 }
1217
1218 SET_IEEE80211_DEV(hw, &pdev->dev);
1219
1220 bcma_set_drvdata(pdev, hw);
1221
1222 memset(hw->priv, 0, sizeof(*wl));
1223
1224 wl = brcms_attach(pdev);
1225 if (!wl) {
1226 pr_err("%s: brcms_attach failed!\n", __func__);
1227 return -ENODEV;
1228 }
1229 brcms_led_register(wl);
1230
1231 return 0;
1232 }
1233
1234 static int brcms_suspend(struct bcma_device *pdev)
1235 {
1236 struct brcms_info *wl;
1237 struct ieee80211_hw *hw;
1238
1239 hw = bcma_get_drvdata(pdev);
1240 wl = hw->priv;
1241 if (!wl) {
1242 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1243 __func__);
1244 return -ENODEV;
1245 }
1246
1247 /* only need to flag hw is down for proper resume */
1248 spin_lock_bh(&wl->lock);
1249 wl->pub->hw_up = false;
1250 spin_unlock_bh(&wl->lock);
1251
1252 brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
1253
1254 return 0;
1255 }
1256
1257 static int brcms_resume(struct bcma_device *pdev)
1258 {
1259 return 0;
1260 }
1261
1262 static struct bcma_driver brcms_bcma_driver = {
1263 .name = KBUILD_MODNAME,
1264 .probe = brcms_bcma_probe,
1265 .suspend = brcms_suspend,
1266 .resume = brcms_resume,
1267 .remove = brcms_remove,
1268 .id_table = brcms_coreid_table,
1269 };
1270
1271 /**
1272 * This is the main entry point for the brcmsmac driver.
1273 *
1274 * This function is scheduled upon module initialization and
1275 * does the driver registration, which result in brcms_bcma_probe()
1276 * call resulting in the driver bringup.
1277 */
1278 static void brcms_driver_init(struct work_struct *work)
1279 {
1280 int error;
1281
1282 error = bcma_driver_register(&brcms_bcma_driver);
1283 if (error)
1284 pr_err("%s: register returned %d\n", __func__, error);
1285 }
1286
1287 static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
1288
1289 static int __init brcms_module_init(void)
1290 {
1291 brcms_debugfs_init();
1292 if (!schedule_work(&brcms_driver_work))
1293 return -EBUSY;
1294
1295 return 0;
1296 }
1297
1298 /**
1299 * This function unloads the brcmsmac driver from the system.
1300 *
1301 * This function unconditionally unloads the brcmsmac driver module from the
1302 * system.
1303 *
1304 */
1305 static void __exit brcms_module_exit(void)
1306 {
1307 cancel_work_sync(&brcms_driver_work);
1308 bcma_driver_unregister(&brcms_bcma_driver);
1309 brcms_debugfs_exit();
1310 }
1311
1312 module_init(brcms_module_init);
1313 module_exit(brcms_module_exit);
1314
1315 /*
1316 * precondition: perimeter lock has been acquired
1317 */
1318 void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1319 bool state, int prio)
1320 {
1321 brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
1322 }
1323
1324 /*
1325 * precondition: perimeter lock has been acquired
1326 */
1327 void brcms_init(struct brcms_info *wl)
1328 {
1329 brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1330 wl->pub->unit);
1331 brcms_reset(wl);
1332 brcms_c_init(wl->wlc, wl->mute_tx);
1333 }
1334
1335 /*
1336 * precondition: perimeter lock has been acquired
1337 */
1338 uint brcms_reset(struct brcms_info *wl)
1339 {
1340 brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
1341 brcms_c_reset(wl->wlc);
1342
1343 /* dpc will not be rescheduled */
1344 wl->resched = false;
1345
1346 /* inform publicly that interface is down */
1347 wl->pub->up = false;
1348
1349 return 0;
1350 }
1351
1352 void brcms_fatal_error(struct brcms_info *wl)
1353 {
1354 brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
1355 wl->wlc->pub->unit);
1356 brcms_reset(wl);
1357 ieee80211_restart_hw(wl->pub->ieee_hw);
1358 }
1359
1360 /*
1361 * These are interrupt on/off entry points. Disable interrupts
1362 * during interrupt state transition.
1363 */
1364 void brcms_intrson(struct brcms_info *wl)
1365 {
1366 unsigned long flags;
1367
1368 spin_lock_irqsave(&wl->isr_lock, flags);
1369 brcms_c_intrson(wl->wlc);
1370 spin_unlock_irqrestore(&wl->isr_lock, flags);
1371 }
1372
1373 u32 brcms_intrsoff(struct brcms_info *wl)
1374 {
1375 unsigned long flags;
1376 u32 status;
1377
1378 spin_lock_irqsave(&wl->isr_lock, flags);
1379 status = brcms_c_intrsoff(wl->wlc);
1380 spin_unlock_irqrestore(&wl->isr_lock, flags);
1381 return status;
1382 }
1383
1384 void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1385 {
1386 unsigned long flags;
1387
1388 spin_lock_irqsave(&wl->isr_lock, flags);
1389 brcms_c_intrsrestore(wl->wlc, macintmask);
1390 spin_unlock_irqrestore(&wl->isr_lock, flags);
1391 }
1392
1393 /*
1394 * precondition: perimeter lock has been acquired
1395 */
1396 int brcms_up(struct brcms_info *wl)
1397 {
1398 int error = 0;
1399
1400 if (wl->pub->up)
1401 return 0;
1402
1403 error = brcms_c_up(wl->wlc);
1404
1405 return error;
1406 }
1407
1408 /*
1409 * precondition: perimeter lock has been acquired
1410 */
1411 void brcms_down(struct brcms_info *wl)
1412 {
1413 uint callbacks, ret_val = 0;
1414
1415 /* call common down function */
1416 ret_val = brcms_c_down(wl->wlc);
1417 callbacks = atomic_read(&wl->callbacks) - ret_val;
1418
1419 /* wait for down callbacks to complete */
1420 spin_unlock_bh(&wl->lock);
1421
1422 /* For HIGH_only driver, it's important to actually schedule other work,
1423 * not just spin wait since everything runs at schedule level
1424 */
1425 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1426
1427 spin_lock_bh(&wl->lock);
1428 }
1429
1430 /*
1431 * precondition: perimeter lock is not acquired
1432 */
1433 static void _brcms_timer(struct work_struct *work)
1434 {
1435 struct brcms_timer *t = container_of(work, struct brcms_timer,
1436 dly_wrk.work);
1437
1438 spin_lock_bh(&t->wl->lock);
1439
1440 if (t->set) {
1441 if (t->periodic) {
1442 atomic_inc(&t->wl->callbacks);
1443 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1444 &t->dly_wrk,
1445 msecs_to_jiffies(t->ms));
1446 } else {
1447 t->set = false;
1448 }
1449
1450 t->fn(t->arg);
1451 }
1452
1453 atomic_dec(&t->wl->callbacks);
1454
1455 spin_unlock_bh(&t->wl->lock);
1456 }
1457
1458 /*
1459 * Adds a timer to the list. Caller supplies a timer function.
1460 * Is called from wlc.
1461 *
1462 * precondition: perimeter lock has been acquired
1463 */
1464 struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1465 void (*fn) (void *arg),
1466 void *arg, const char *name)
1467 {
1468 struct brcms_timer *t;
1469
1470 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1471 if (!t)
1472 return NULL;
1473
1474 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
1475 t->wl = wl;
1476 t->fn = fn;
1477 t->arg = arg;
1478 t->next = wl->timers;
1479 wl->timers = t;
1480
1481 #ifdef DEBUG
1482 t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1483 if (t->name)
1484 strcpy(t->name, name);
1485 #endif
1486
1487 return t;
1488 }
1489
1490 /*
1491 * adds only the kernel timer since it's going to be more accurate
1492 * as well as it's easier to make it periodic
1493 *
1494 * precondition: perimeter lock has been acquired
1495 */
1496 void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
1497 {
1498 struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1499
1500 #ifdef DEBUG
1501 if (t->set)
1502 brcms_dbg_info(t->wl->wlc->hw->d11core,
1503 "%s: Already set. Name: %s, per %d\n",
1504 __func__, t->name, periodic);
1505 #endif
1506 t->ms = ms;
1507 t->periodic = (bool) periodic;
1508 if (!t->set) {
1509 t->set = true;
1510 atomic_inc(&t->wl->callbacks);
1511 }
1512
1513 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
1514 }
1515
1516 /*
1517 * return true if timer successfully deleted, false if still pending
1518 *
1519 * precondition: perimeter lock has been acquired
1520 */
1521 bool brcms_del_timer(struct brcms_timer *t)
1522 {
1523 if (t->set) {
1524 t->set = false;
1525 if (!cancel_delayed_work(&t->dly_wrk))
1526 return false;
1527
1528 atomic_dec(&t->wl->callbacks);
1529 }
1530
1531 return true;
1532 }
1533
1534 /*
1535 * precondition: perimeter lock has been acquired
1536 */
1537 void brcms_free_timer(struct brcms_timer *t)
1538 {
1539 struct brcms_info *wl = t->wl;
1540 struct brcms_timer *tmp;
1541
1542 /* delete the timer in case it is active */
1543 brcms_del_timer(t);
1544
1545 if (wl->timers == t) {
1546 wl->timers = wl->timers->next;
1547 #ifdef DEBUG
1548 kfree(t->name);
1549 #endif
1550 kfree(t);
1551 return;
1552
1553 }
1554
1555 tmp = wl->timers;
1556 while (tmp) {
1557 if (tmp->next == t) {
1558 tmp->next = t->next;
1559 #ifdef DEBUG
1560 kfree(t->name);
1561 #endif
1562 kfree(t);
1563 return;
1564 }
1565 tmp = tmp->next;
1566 }
1567
1568 }
1569
1570 /*
1571 * precondition: perimeter lock has been acquired
1572 */
1573 int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1574 {
1575 int i, entry;
1576 const u8 *pdata;
1577 struct firmware_hdr *hdr;
1578 for (i = 0; i < wl->fw.fw_cnt; i++) {
1579 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1580 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1581 entry++, hdr++) {
1582 u32 len = le32_to_cpu(hdr->len);
1583 if (le32_to_cpu(hdr->idx) == idx) {
1584 pdata = wl->fw.fw_bin[i]->data +
1585 le32_to_cpu(hdr->offset);
1586 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
1587 if (*pbuf == NULL)
1588 goto fail;
1589
1590 return 0;
1591 }
1592 }
1593 }
1594 brcms_err(wl->wlc->hw->d11core,
1595 "ERROR: ucode buf tag:%d can not be found!\n", idx);
1596 *pbuf = NULL;
1597 fail:
1598 return -ENODATA;
1599 }
1600
1601 /*
1602 * Precondition: Since this function is called in brcms_bcma_probe() context,
1603 * no locking is required.
1604 */
1605 int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1606 {
1607 int i, entry;
1608 const u8 *pdata;
1609 struct firmware_hdr *hdr;
1610 for (i = 0; i < wl->fw.fw_cnt; i++) {
1611 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1612 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1613 entry++, hdr++) {
1614 if (le32_to_cpu(hdr->idx) == idx) {
1615 pdata = wl->fw.fw_bin[i]->data +
1616 le32_to_cpu(hdr->offset);
1617 if (le32_to_cpu(hdr->len) != 4) {
1618 brcms_err(wl->wlc->hw->d11core,
1619 "ERROR: fw hdr len\n");
1620 return -ENOMSG;
1621 }
1622 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1623 return 0;
1624 }
1625 }
1626 }
1627 brcms_err(wl->wlc->hw->d11core,
1628 "ERROR: ucode tag:%d can not be found!\n", idx);
1629 return -ENOMSG;
1630 }
1631
1632 /*
1633 * precondition: can both be called locked and unlocked
1634 */
1635 void brcms_ucode_free_buf(void *p)
1636 {
1637 kfree(p);
1638 }
1639
1640 /*
1641 * checks validity of all firmware images loaded from user space
1642 *
1643 * Precondition: Since this function is called in brcms_bcma_probe() context,
1644 * no locking is required.
1645 */
1646 int brcms_check_firmwares(struct brcms_info *wl)
1647 {
1648 int i;
1649 int entry;
1650 int rc = 0;
1651 const struct firmware *fw;
1652 const struct firmware *fw_hdr;
1653 struct firmware_hdr *ucode_hdr;
1654 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1655 fw = wl->fw.fw_bin[i];
1656 fw_hdr = wl->fw.fw_hdr[i];
1657 if (fw == NULL && fw_hdr == NULL) {
1658 break;
1659 } else if (fw == NULL || fw_hdr == NULL) {
1660 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1661 __func__);
1662 rc = -EBADF;
1663 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1664 wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1665 "size %zu/%zu\n", __func__, fw_hdr->size,
1666 sizeof(struct firmware_hdr));
1667 rc = -EBADF;
1668 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
1669 wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1670 __func__, fw->size);
1671 rc = -EBADF;
1672 } else {
1673 /* check if ucode section overruns firmware image */
1674 ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1675 for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1676 !rc; entry++, ucode_hdr++) {
1677 if (le32_to_cpu(ucode_hdr->offset) +
1678 le32_to_cpu(ucode_hdr->len) >
1679 fw->size) {
1680 wiphy_err(wl->wiphy,
1681 "%s: conflicting bin/hdr\n",
1682 __func__);
1683 rc = -EBADF;
1684 }
1685 }
1686 }
1687 }
1688 if (rc == 0 && wl->fw.fw_cnt != i) {
1689 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1690 wl->fw.fw_cnt);
1691 rc = -EBADF;
1692 }
1693 return rc;
1694 }
1695
1696 /*
1697 * precondition: perimeter lock has been acquired
1698 */
1699 bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1700 {
1701 bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1702
1703 spin_unlock_bh(&wl->lock);
1704 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1705 if (blocked)
1706 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1707 spin_lock_bh(&wl->lock);
1708 return blocked;
1709 }
Linux with added FPC-III support