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treewide: Remove unnecessary BCMA_CORETABLE_END macro
[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / brcm80211 / brcmsmac / mac80211_if.c
CommitLineData
5b435de0
AS		 1/*
2 * Copyright (c) 2010 Broadcom Corporation
af44e258 3 * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de>
5b435de0
AS		 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__
02f77195 19#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
5b435de0
AS		 20
21#include <linux/etherdevice.h>
5b435de0
AS		 22#include <linux/sched.h>
23#include <linux/firmware.h>
24#include <linux/interrupt.h>
45296236 25#include <linux/module.h>
2e756560 26#include <linux/bcma/bcma.h>
5b435de0
AS		 27#include <net/mac80211.h>
28#include <defs.h>
5b435de0
AS		 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"
b353dda4 37#include "debug.h"
cd864522 38#include "led.h"
5b435de0
AS		 39
40#define N_TX_QUEUES 4 /* #tx queues on mac80211<->driver interface */
7b2385b9 41#define BRCMS_FLUSH_TIMEOUT 500 /* msec */
5b435de0
AS		 42
43/* Flags we support */
44#define MAC_FILTERS (FIF_PROMISC_IN_BSS | \
45 FIF_ALLMULTI | \
46 FIF_FCSFAIL | \
5b435de0
AS		 47 FIF_CONTROL | \
48 FIF_OTHER_BSS | \
be667669
AB		 49 FIF_BCN_PRBRESP_PROMISC | \
50 FIF_PSPOLL)
5b435de0
AS		 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
76struct firmware_hdr {
77 __le32 offset;
78 __le32 len;
79 __le32 idx;
80};
81
82static const char * const brcms_firmwares[MAX_FW_IMAGES] = {
83 "brcm/bcm43xx",
84 NULL
85};
86
87static int n_adapters_found;
88
89MODULE_AUTHOR("Broadcom Corporation");
90MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver.");
91MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN cards");
92MODULE_LICENSE("Dual BSD/GPL");
faa97bd4
JM		 93/* This needs to be adjusted when brcms_firmwares changes */
94MODULE_FIRMWARE("brcm/bcm43xx-0.fw");
95MODULE_FIRMWARE("brcm/bcm43xx_hdr-0.fw");
5b435de0 96
2e756560
AS		 97/* recognized BCMA Core IDs */
98static struct bcma_device_id brcms_coreid_table[] = {
6f80f014 99 BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, 17, BCMA_ANY_CLASS),
eb032f03
AS		 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),
f7219b52 102 {},
2e756560
AS		 103};
104MODULE_DEVICE_TABLE(bcma, brcms_coreid_table);
5b435de0 105
b0341744
SF		 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 */
112module_param_named(debug, brcm_msg_level, uint, S_IRUGO | S_IWUSR);
113#endif
5b435de0
AS		 114
115static 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,
8fe02e16 128 IEEE80211_CHAN_NO_IR |
5b435de0
AS		 129 IEEE80211_CHAN_NO_HT40PLUS),
130 CHAN2GHZ(13, 2472,
8fe02e16 131 IEEE80211_CHAN_NO_IR |
5b435de0
AS		 132 IEEE80211_CHAN_NO_HT40PLUS),
133 CHAN2GHZ(14, 2484,
8fe02e16 134 IEEE80211_CHAN_NO_IR |
7f38e5bc
SF		 135 IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS |
136 IEEE80211_CHAN_NO_OFDM)
5b435de0
AS		 137};
138
139static 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,
8fe02e16
LR		 147 IEEE80211_CHAN_RADAR |
148 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
5b435de0 149 CHAN5GHZ(56,
8fe02e16
LR		 150 IEEE80211_CHAN_RADAR |
151 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
5b435de0 152 CHAN5GHZ(60,
8fe02e16
LR		 153 IEEE80211_CHAN_RADAR |
154 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
5b435de0 155 CHAN5GHZ(64,
8fe02e16
LR		 156 IEEE80211_CHAN_RADAR |
157 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
5b435de0
AS		 158 /* MID */
159 CHAN5GHZ(100,
8fe02e16
LR		 160 IEEE80211_CHAN_RADAR |
161 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
5b435de0 162 CHAN5GHZ(104,
8fe02e16
LR		 163 IEEE80211_CHAN_RADAR |
164 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
5b435de0 165 CHAN5GHZ(108,
8fe02e16
LR		 166 IEEE80211_CHAN_RADAR |
167 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
5b435de0 168 CHAN5GHZ(112,
8fe02e16
LR		 169 IEEE80211_CHAN_RADAR |
170 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
5b435de0 171 CHAN5GHZ(116,
8fe02e16
LR		 172 IEEE80211_CHAN_RADAR |
173 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
5b435de0 174 CHAN5GHZ(120,
8fe02e16
LR		 175 IEEE80211_CHAN_RADAR |
176 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
5b435de0 177 CHAN5GHZ(124,
8fe02e16
LR		 178 IEEE80211_CHAN_RADAR |
179 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
5b435de0 180 CHAN5GHZ(128,
8fe02e16
LR		 181 IEEE80211_CHAN_RADAR |
182 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
5b435de0 183 CHAN5GHZ(132,
8fe02e16
LR		 184 IEEE80211_CHAN_RADAR |
185 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40MINUS),
5b435de0 186 CHAN5GHZ(136,
8fe02e16
LR		 187 IEEE80211_CHAN_RADAR |
188 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS),
5b435de0 189 CHAN5GHZ(140,
8fe02e16
LR		 190 IEEE80211_CHAN_RADAR |
191 IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_HT40PLUS |
5b435de0
AS		 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 */
205static 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
220static 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 |
6b1a89af 229 IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40,
5b435de0
AS		 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
241static 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 |
6b1a89af 250 IEEE80211_HT_CAP_SGI_40,
5b435de0
AS		 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 */
263static 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
25b5632f
AS		 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 */
288static 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*/
333static 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) {
d1497f21 339 brcms_led_unregister(wl);
25b5632f
AS		 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 */
355static 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 */
368static 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
36323f81
TH		 404static void brcms_ops_tx(struct ieee80211_hw *hw,
405 struct ieee80211_tx_control *control,
406 struct sk_buff *skb)
5b435de0
AS		 407{
408 struct brcms_info *wl = hw->priv;
644e8c07 409 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
5b435de0
AS		 410
411 spin_lock_bh(&wl->lock);
412 if (!wl->pub->up) {
b353dda4 413 brcms_err(wl->wlc->hw->d11core, "ops->tx called while down\n");
5b435de0
AS		 414 kfree_skb(skb);
415 goto done;
416 }
c4dea35e
PH		 417 if (brcms_c_sendpkt_mac80211(wl->wlc, skb, hw))
418 tx_info->rate_driver_data[0] = control->sta;
5b435de0
AS		 419 done:
420 spin_unlock_bh(&wl->lock);
421}
422
423static int brcms_ops_start(struct ieee80211_hw *hw)
424{
425 struct brcms_info *wl = hw->priv;
426 bool blocked;
2646c46d 427 int err;
5b435de0 428
8fc1e8c2
EG		 429 if (!wl->ucode.bcm43xx_bomminor) {
430 err = brcms_request_fw(wl, wl->wlc->hw->d11core);
431 if (err)
432 return -ENOENT;
433 }
434
5b435de0
AS		 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
2646c46d 442 spin_lock_bh(&wl->lock);
dc460127
RV		 443 /* avoid acknowledging frames before a non-monitor device is added */
444 wl->mute_tx = true;
445
2646c46d 446 if (!wl->pub->up)
82d8eba3
PH		 447 if (!blocked)
448 err = brcms_up(wl);
449 else
450 err = -ERFKILL;
2646c46d
RV		 451 else
452 err = -ENODEV;
453 spin_unlock_bh(&wl->lock);
454
455 if (err != 0)
b353dda4
SF		 456 brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n",
457 __func__, err);
c7515d23
AS		 458
459 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true);
2646c46d 460 return err;
5b435de0
AS		 461}
462
463static void brcms_ops_stop(struct ieee80211_hw *hw)
464{
2646c46d
RV		 465 struct brcms_info *wl = hw->priv;
466 int status;
467
5b435de0 468 ieee80211_stop_queues(hw);
2646c46d
RV		 469
470 if (wl->wlc == NULL)
471 return;
472
473 spin_lock_bh(&wl->lock);
cacaa64b 474 status = brcms_c_chipmatch(wl->wlc->hw->d11core);
2646c46d
RV		 475 spin_unlock_bh(&wl->lock);
476 if (!status) {
b353dda4 477 brcms_err(wl->wlc->hw->d11core,
2646c46d
RV		 478 "wl: brcms_ops_stop: chipmatch failed\n");
479 return;
480 }
481
c7515d23
AS		 482 bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false);
483
2646c46d
RV		 484 /* put driver in down state */
485 spin_lock_bh(&wl->lock);
486 brcms_down(wl);
487 spin_unlock_bh(&wl->lock);
5b435de0
AS		 488}
489
490static int
491brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
492{
dc460127
RV		 493 struct brcms_info *wl = hw->priv;
494
c55b3766 495 /* Just STA, AP and ADHOC for now */
492b71e8 496 if (vif->type != NL80211_IFTYPE_STATION &&
c55b3766
HM		 497 vif->type != NL80211_IFTYPE_AP &&
498 vif->type != NL80211_IFTYPE_ADHOC) {
b353dda4 499 brcms_err(wl->wlc->hw->d11core,
c55b3766 500 "%s: Attempt to add type %d, only STA, AP and AdHoc for now\n",
b353dda4 501 __func__, vif->type);
5b435de0
AS		 502 return -EOPNOTSUPP;
503 }
504
66578c0a 505 spin_lock_bh(&wl->lock);
dc460127
RV		 506 wl->mute_tx = false;
507 brcms_c_mute(wl->wlc, false);
70268ce2
HM		 508 if (vif->type == NL80211_IFTYPE_STATION)
509 brcms_c_start_station(wl->wlc, vif->addr);
492b71e8
HM		 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);
c55b3766
HM		 513 else if (vif->type == NL80211_IFTYPE_ADHOC)
514 brcms_c_start_adhoc(wl->wlc, vif->addr);
66578c0a 515 spin_unlock_bh(&wl->lock);
dc460127 516
2646c46d 517 return 0;
5b435de0
AS		 518}
519
520static void
521brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
522{
5b435de0
AS		 523}
524
525static 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;
b353dda4 529 struct bcma_device *core = wl->wlc->hw->d11core;
5b435de0
AS		 530 int err = 0;
531 int new_int;
5b435de0
AS		 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)
b353dda4
SF		 539 brcms_dbg_info(core, "%s: change monitor mode: %s\n",
540 __func__, conf->flags & IEEE80211_CONF_MONITOR ?
541 "true" : "false");
5b435de0 542 if (changed & IEEE80211_CONF_CHANGE_PS)
b353dda4 543 brcms_err(core, "%s: change power-save mode: %s (implement)\n",
5b435de0
AS		 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) {
b353dda4 550 brcms_err(core, "%s: Error setting power_level\n",
5b435de0
AS		 551 __func__);
552 goto config_out;
553 }
554 new_int = brcms_c_get_tx_power(wl->wlc);
555 if (new_int != conf->power_level)
b353dda4
SF		 556 brcms_err(core,
557 "%s: Power level req != actual, %d %d\n",
558 __func__, conf->power_level,
5b435de0
AS		 559 new_int);
560 }
561 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
675a0b04
KB		 562 if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
563 conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
5b435de0 564 err = brcms_c_set_channel(wl->wlc,
675a0b04 565 conf->chandef.chan->hw_value);
5b435de0
AS		 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
579static void
580brcms_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;
b353dda4 585 struct bcma_device *core = wl->wlc->hw->d11core;
5b435de0
AS		 586
587 if (changed & BSS_CHANGED_ASSOC) {
588 /* association status changed (associated/disassociated)
589 * also implies a change in the AID.
590 */
b353dda4 591 brcms_err(core, "%s: %s: %sassociated\n", KBUILD_MODNAME,
5b435de0
AS		 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)
b353dda4 651 brcms_err(core, "changing basic rates failed: %d\n",
5b435de0
AS		 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 }
c031df31
HM		 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 }
af44e258 672 if (changed & BSS_CHANGED_BEACON) {
5b435de0 673 /* Beacon data changed, retrieve new beacon (beaconing modes) */
af44e258
HM		 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 }
5b435de0 683
5f1e59e5
HM		 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
5b435de0
AS		 693 if (changed & BSS_CHANGED_BEACON_ENABLED) {
694 /* Beaconing should be enabled/disabled (beaconing modes) */
b353dda4 695 brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
5b435de0 696 info->enable_beacon ? "true" : "false");
04d2e422
HM		 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 }
5b435de0
AS		 703 }
704
705 if (changed & BSS_CHANGED_CQM) {
706 /* Connection quality monitor config changed */
b353dda4 707 brcms_err(core, "%s: cqm change: threshold %d, hys %d "
5b435de0
AS		 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 */
b353dda4
SF		 714 brcms_err(core, "%s: IBSS joined: %s (implement)\n",
715 __func__, info->ibss_joined ? "true" : "false");
5b435de0
AS		 716 }
717
718 if (changed & BSS_CHANGED_ARP_FILTER) {
719 /* Hardware ARP filter address list or state changed */
0f19b41e
JB		 720 brcms_err(core, "%s: arp filtering: %d addresses"
721 " (implement)\n", __func__, info->arp_addr_cnt);
5b435de0
AS		 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 */
b353dda4
SF		 729 brcms_err(core, "%s: qos enabled: %s (implement)\n",
730 __func__, info->qos ? "true" : "false");
5b435de0
AS		 731 }
732 return;
733}
734
735static void
736brcms_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;
b353dda4 741 struct bcma_device *core = wl->wlc->hw->d11core;
5b435de0
AS		 742
743 changed_flags &= MAC_FILTERS;
744 *total_flags &= MAC_FILTERS;
be667669 745
5b435de0 746 if (changed_flags & FIF_PROMISC_IN_BSS)
b353dda4 747 brcms_dbg_info(core, "FIF_PROMISC_IN_BSS\n");
5b435de0 748 if (changed_flags & FIF_ALLMULTI)
b353dda4 749 brcms_dbg_info(core, "FIF_ALLMULTI\n");
5b435de0 750 if (changed_flags & FIF_FCSFAIL)
ad667867 751 brcms_dbg_info(core, "FIF_FCSFAIL\n");
5b435de0 752 if (changed_flags & FIF_CONTROL)
b353dda4 753 brcms_dbg_info(core, "FIF_CONTROL\n");
5b435de0 754 if (changed_flags & FIF_OTHER_BSS)
b353dda4 755 brcms_dbg_info(core, "FIF_OTHER_BSS\n");
be667669 756 if (changed_flags & FIF_PSPOLL)
b353dda4 757 brcms_dbg_info(core, "FIF_PSPOLL\n");
be667669 758 if (changed_flags & FIF_BCN_PRBRESP_PROMISC)
b353dda4 759 brcms_dbg_info(core, "FIF_BCN_PRBRESP_PROMISC\n");
be667669
AB		 760
761 spin_lock_bh(&wl->lock);
762 brcms_c_mac_promisc(wl->wlc, *total_flags);
763 spin_unlock_bh(&wl->lock);
5b435de0
AS		 764 return;
765}
766
a344d677
JB		 767static void brcms_ops_sw_scan_start(struct ieee80211_hw *hw,
768 struct ieee80211_vif *vif,
769 const u8 *mac_addr)
5b435de0
AS		 770{
771 struct brcms_info *wl = hw->priv;
772 spin_lock_bh(&wl->lock);
773 brcms_c_scan_start(wl->wlc);
774 spin_unlock_bh(&wl->lock);
775 return;
776}
777
a344d677
JB		 778static void brcms_ops_sw_scan_complete(struct ieee80211_hw *hw,
779 struct ieee80211_vif *vif)
5b435de0
AS		 780{
781 struct brcms_info *wl = hw->priv;
782 spin_lock_bh(&wl->lock);
783 brcms_c_scan_stop(wl->wlc);
784 spin_unlock_bh(&wl->lock);
785 return;
786}
787
788static int
789brcms_ops_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
790 const struct ieee80211_tx_queue_params *params)
791{
792 struct brcms_info *wl = hw->priv;
793
794 spin_lock_bh(&wl->lock);
795 brcms_c_wme_setparams(wl->wlc, queue, params, true);
796 spin_unlock_bh(&wl->lock);
797
798 return 0;
799}
800
801static int
802brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
803 struct ieee80211_sta *sta)
804{
805 struct brcms_info *wl = hw->priv;
806 struct scb *scb = &wl->wlc->pri_scb;
807
808 brcms_c_init_scb(scb);
809
810 wl->pub->global_ampdu = &(scb->scb_ampdu);
811 wl->pub->global_ampdu->scb = scb;
812 wl->pub->global_ampdu->max_pdu = 16;
813
5b435de0
AS		 814 /*
815 * minstrel_ht initiates addBA on our behalf by calling
816 * ieee80211_start_tx_ba_session()
817 */
818 return 0;
819}
820
821static int
822brcms_ops_ampdu_action(struct ieee80211_hw *hw,
823 struct ieee80211_vif *vif,
824 enum ieee80211_ampdu_mlme_action action,
825 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
826 u8 buf_size)
827{
828 struct brcms_info *wl = hw->priv;
829 struct scb *scb = &wl->wlc->pri_scb;
830 int status;
831
832 if (WARN_ON(scb->magic != SCB_MAGIC))
833 return -EIDRM;
834 switch (action) {
835 case IEEE80211_AMPDU_RX_START:
836 break;
837 case IEEE80211_AMPDU_RX_STOP:
838 break;
839 case IEEE80211_AMPDU_TX_START:
840 spin_lock_bh(&wl->lock);
841 status = brcms_c_aggregatable(wl->wlc, tid);
842 spin_unlock_bh(&wl->lock);
843 if (!status) {
b353dda4
SF		 844 brcms_err(wl->wlc->hw->d11core,
845 "START: tid %d is not agg\'able\n", tid);
5b435de0
AS		 846 return -EINVAL;
847 }
848 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
849 break;
850
18b559d5
JB		 851 case IEEE80211_AMPDU_TX_STOP_CONT:
852 case IEEE80211_AMPDU_TX_STOP_FLUSH:
853 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5b435de0
AS		 854 spin_lock_bh(&wl->lock);
855 brcms_c_ampdu_flush(wl->wlc, sta, tid);
856 spin_unlock_bh(&wl->lock);
857 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
858 break;
859 case IEEE80211_AMPDU_TX_OPERATIONAL:
860 /*
861 * BA window size from ADDBA response ('buf_size') defines how
862 * many outstanding MPDUs are allowed for the BA stream by
863 * recipient and traffic class. 'ampdu_factor' gives maximum
864 * AMPDU size.
865 */
866 spin_lock_bh(&wl->lock);
867 brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size,
868 (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
869 sta->ht_cap.ampdu_factor)) - 1);
870 spin_unlock_bh(&wl->lock);
871 /* Power save wakeup */
872 break;
873 default:
b353dda4
SF		 874 brcms_err(wl->wlc->hw->d11core,
875 "%s: Invalid command, ignoring\n", __func__);
5b435de0
AS		 876 }
877
878 return 0;
879}
880
881static void brcms_ops_rfkill_poll(struct ieee80211_hw *hw)
882{
883 struct brcms_info *wl = hw->priv;
884 bool blocked;
885
886 spin_lock_bh(&wl->lock);
887 blocked = brcms_c_check_radio_disabled(wl->wlc);
888 spin_unlock_bh(&wl->lock);
889
890 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
891}
892
7b2385b9
AS		 893static bool brcms_tx_flush_completed(struct brcms_info *wl)
894{
895 bool result;
896
897 spin_lock_bh(&wl->lock);
898 result = brcms_c_tx_flush_completed(wl->wlc);
899 spin_unlock_bh(&wl->lock);
900 return result;
901}
902
77be2c54
EG		 903static void brcms_ops_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
904 u32 queues, bool drop)
5b435de0
AS		 905{
906 struct brcms_info *wl = hw->priv;
7b2385b9 907 int ret;
5b435de0
AS		 908
909 no_printk("%s: drop = %s\n", __func__, drop ? "true" : "false");
910
7b2385b9
AS		 911 ret = wait_event_timeout(wl->tx_flush_wq,
912 brcms_tx_flush_completed(wl),
913 msecs_to_jiffies(BRCMS_FLUSH_TIMEOUT));
914
915 brcms_dbg_mac80211(wl->wlc->hw->d11core,
916 "ret=%d\n", jiffies_to_msecs(ret));
5b435de0
AS		 917}
918
39b2d36c
HM		 919static u64 brcms_ops_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
920{
921 struct brcms_info *wl = hw->priv;
922 u64 tsf;
923
924 spin_lock_bh(&wl->lock);
925 tsf = brcms_c_tsf_get(wl->wlc);
926 spin_unlock_bh(&wl->lock);
927
928 return tsf;
929}
930
931static void brcms_ops_set_tsf(struct ieee80211_hw *hw,
932 struct ieee80211_vif *vif, u64 tsf)
933{
934 struct brcms_info *wl = hw->priv;
935
936 spin_lock_bh(&wl->lock);
937 brcms_c_tsf_set(wl->wlc, tsf);
938 spin_unlock_bh(&wl->lock);
939}
940
5b435de0
AS		 941static const struct ieee80211_ops brcms_ops = {
942 .tx = brcms_ops_tx,
943 .start = brcms_ops_start,
944 .stop = brcms_ops_stop,
945 .add_interface = brcms_ops_add_interface,
946 .remove_interface = brcms_ops_remove_interface,
947 .config = brcms_ops_config,
948 .bss_info_changed = brcms_ops_bss_info_changed,
949 .configure_filter = brcms_ops_configure_filter,
950 .sw_scan_start = brcms_ops_sw_scan_start,
951 .sw_scan_complete = brcms_ops_sw_scan_complete,
952 .conf_tx = brcms_ops_conf_tx,
953 .sta_add = brcms_ops_sta_add,
954 .ampdu_action = brcms_ops_ampdu_action,
955 .rfkill_poll = brcms_ops_rfkill_poll,
956 .flush = brcms_ops_flush,
39b2d36c
HM		 957 .get_tsf = brcms_ops_get_tsf,
958 .set_tsf = brcms_ops_set_tsf,
5b435de0
AS		 959};
960
5b435de0
AS		 961void brcms_dpc(unsigned long data)
962{
963 struct brcms_info *wl;
964
965 wl = (struct brcms_info *) data;
966
967 spin_lock_bh(&wl->lock);
968
969 /* call the common second level interrupt handler */
970 if (wl->pub->up) {
971 if (wl->resched) {
972 unsigned long flags;
973
974 spin_lock_irqsave(&wl->isr_lock, flags);
975 brcms_c_intrsupd(wl->wlc);
976 spin_unlock_irqrestore(&wl->isr_lock, flags);
977 }
978
979 wl->resched = brcms_c_dpc(wl->wlc, true);
980 }
981
982 /* brcms_c_dpc() may bring the driver down */
983 if (!wl->pub->up)
984 goto done;
985
986 /* re-schedule dpc */
987 if (wl->resched)
988 tasklet_schedule(&wl->tasklet);
989 else
990 /* re-enable interrupts */
991 brcms_intrson(wl);
992
993 done:
994 spin_unlock_bh(&wl->lock);
7b2385b9 995 wake_up(&wl->tx_flush_wq);
5b435de0
AS		 996}
997
5b435de0
AS		 998static irqreturn_t brcms_isr(int irq, void *dev_id)
999{
1000 struct brcms_info *wl;
94d9902d 1001 irqreturn_t ret = IRQ_NONE;
5b435de0
AS		 1002
1003 wl = (struct brcms_info *) dev_id;
1004
1005 spin_lock(&wl->isr_lock);
1006
1007 /* call common first level interrupt handler */
94d9902d
PH		 1008 if (brcms_c_isr(wl->wlc)) {
1009 /* schedule second level handler */
1010 tasklet_schedule(&wl->tasklet);
1011 ret = IRQ_HANDLED;
5b435de0
AS		 1012 }
1013
1014 spin_unlock(&wl->isr_lock);
1015
94d9902d 1016 return ret;
5b435de0
AS		 1017}
1018
1019/*
1020 * is called in brcms_pci_probe() context, therefore no locking required.
1021 */
1022static int ieee_hw_rate_init(struct ieee80211_hw *hw)
1023{
1024 struct brcms_info *wl = hw->priv;
1025 struct brcms_c_info *wlc = wl->wlc;
1026 struct ieee80211_supported_band *band;
1027 int has_5g = 0;
1028 u16 phy_type;
1029
1030 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
1031 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1032
1033 phy_type = brcms_c_get_phy_type(wl->wlc, 0);
1034 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1035 band = &wlc->bandstate[BAND_2G_INDEX]->band;
1036 *band = brcms_band_2GHz_nphy_template;
1037 if (phy_type == PHY_TYPE_LCN) {
1038 /* Single stream */
1039 band->ht_cap.mcs.rx_mask[1] = 0;
df4492f8 1040 band->ht_cap.mcs.rx_highest = cpu_to_le16(72);
5b435de0
AS		 1041 }
1042 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
1043 } else {
1044 return -EPERM;
1045 }
1046
1047 /* Assume all bands use the same phy. True for 11n devices. */
1048 if (wl->pub->_nbands > 1) {
1049 has_5g++;
1050 if (phy_type == PHY_TYPE_N || phy_type == PHY_TYPE_LCN) {
1051 band = &wlc->bandstate[BAND_5G_INDEX]->band;
1052 *band = brcms_band_5GHz_nphy_template;
1053 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
1054 } else {
1055 return -EPERM;
1056 }
1057 }
1058 return 0;
1059}
1060
1061/*
1062 * is called in brcms_pci_probe() context, therefore no locking required.
1063 */
1064static int ieee_hw_init(struct ieee80211_hw *hw)
1065{
1066 hw->flags = IEEE80211_HW_SIGNAL_DBM
1067 /* | IEEE80211_HW_CONNECTION_MONITOR What is this? */
1068 | IEEE80211_HW_REPORTS_TX_ACK_STATUS
1069 | IEEE80211_HW_AMPDU_AGGREGATION;
1070
1071 hw->extra_tx_headroom = brcms_c_get_header_len();
1072 hw->queues = N_TX_QUEUES;
1073 hw->max_rates = 2; /* Primary rate and 1 fallback rate */
1074
1075 /* channel change time is dependent on chip and band */
492b71e8 1076 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
c55b3766
HM		 1077 BIT(NL80211_IFTYPE_AP) |
1078 BIT(NL80211_IFTYPE_ADHOC);
5b435de0 1079
04d2e422
HM		 1080 /*
1081 * deactivate sending probe responses by ucude, because this will
1082 * cause problems when WPS is used.
1083 *
1084 * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1085 */
5f1e59e5 1086
5b435de0
AS		 1087 hw->rate_control_algorithm = "minstrel_ht";
1088
1089 hw->sta_data_size = 0;
1090 return ieee_hw_rate_init(hw);
1091}
1092
1093/**
1094 * attach to the WL device.
1095 *
1096 * Attach to the WL device identified by vendor and device parameters.
1097 * regs is a host accessible memory address pointing to WL device registers.
1098 *
2e756560 1099 * is called in brcms_bcma_probe() context, therefore no locking required.
5b435de0 1100 */
2e756560 1101static struct brcms_info *brcms_attach(struct bcma_device *pdev)
5b435de0
AS		 1102{
1103 struct brcms_info *wl = NULL;
1104 int unit, err;
1105 struct ieee80211_hw *hw;
1106 u8 perm[ETH_ALEN];
1107
1108 unit = n_adapters_found;
1109 err = 0;
1110
1111 if (unit < 0)
1112 return NULL;
1113
1114 /* allocate private info */
2e756560 1115 hw = bcma_get_drvdata(pdev);
5b435de0
AS		 1116 if (hw != NULL)
1117 wl = hw->priv;
1118 if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
1119 return NULL;
1120 wl->wiphy = hw->wiphy;
1121
1122 atomic_set(&wl->callbacks, 0);
1123
7b2385b9
AS		 1124 init_waitqueue_head(&wl->tx_flush_wq);
1125
5b435de0
AS		 1126 /* setup the bottom half handler */
1127 tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);
1128
5b435de0
AS		 1129 spin_lock_init(&wl->lock);
1130 spin_lock_init(&wl->isr_lock);
1131
5b435de0 1132 /* common load-time initialization */
b63337a0 1133 wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
5b435de0
AS		 1134 if (!wl->wlc) {
1135 wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
1136 KBUILD_MODNAME, err);
1137 goto fail;
1138 }
1139 wl->pub = brcms_c_pub(wl->wlc);
1140
1141 wl->pub->ieee_hw = hw;
1142
5b435de0 1143 /* register our interrupt handler */
00bcda40 1144 if (request_irq(pdev->irq, brcms_isr,
2e756560 1145 IRQF_SHARED, KBUILD_MODNAME, wl)) {
5b435de0
AS		 1146 wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
1147 goto fail;
1148 }
00bcda40 1149 wl->irq = pdev->irq;
5b435de0
AS		 1150
1151 /* register module */
1152 brcms_c_module_register(wl->pub, "linux", wl, NULL);
1153
1154 if (ieee_hw_init(hw)) {
1155 wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
1156 __func__);
1157 goto fail;
1158 }
1159
cf03c5da
SF		 1160 brcms_c_regd_init(wl->wlc);
1161
5b435de0
AS		 1162 memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
1163 if (WARN_ON(!is_valid_ether_addr(perm)))
1164 goto fail;
1165 SET_IEEE80211_PERM_ADDR(hw, perm);
1166
1167 err = ieee80211_register_hw(hw);
1168 if (err)
1169 wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
1170 "%d\n", __func__, err);
1171
d597ee7e
AS		 1172 if (wl->pub->srom_ccode[0] &&
1173 regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
1174 wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);
5b435de0 1175
8e21df23
PH		 1176 brcms_debugfs_attach(wl->pub);
1177 brcms_debugfs_create_files(wl->pub);
5b435de0
AS		 1178 n_adapters_found++;
1179 return wl;
1180
1181fail:
1182 brcms_free(wl);
1183 return NULL;
1184}
1185
1186
1187
1188/**
1189 * determines if a device is a WL device, and if so, attaches it.
1190 *
1191 * This function determines if a device pointed to by pdev is a WL device,
1192 * and if so, performs a brcms_attach() on it.
1193 *
1194 * Perimeter lock is initialized in the course of this function.
1195 */
fcff0c08 1196static int brcms_bcma_probe(struct bcma_device *pdev)
5b435de0 1197{
5b435de0
AS		 1198 struct brcms_info *wl;
1199 struct ieee80211_hw *hw;
5b435de0 1200
2e756560
AS		 1201 dev_info(&pdev->dev, "mfg %x core %x rev %d class %d irq %d\n",
1202 pdev->id.manuf, pdev->id.id, pdev->id.rev, pdev->id.class,
00bcda40 1203 pdev->irq);
5b435de0 1204
2e756560
AS		 1205 if ((pdev->id.manuf != BCMA_MANUF_BCM) ||
1206 (pdev->id.id != BCMA_CORE_80211))
5b435de0 1207 return -ENODEV;
5b435de0
AS		 1208
1209 hw = ieee80211_alloc_hw(sizeof(struct brcms_info), &brcms_ops);
1210 if (!hw) {
1211 pr_err("%s: ieee80211_alloc_hw failed\n", __func__);
1212 return -ENOMEM;
1213 }
1214
1215 SET_IEEE80211_DEV(hw, &pdev->dev);
1216
2e756560 1217 bcma_set_drvdata(pdev, hw);
5b435de0
AS		 1218
1219 memset(hw->priv, 0, sizeof(*wl));
1220
2e756560 1221 wl = brcms_attach(pdev);
5b435de0 1222 if (!wl) {
02f77195 1223 pr_err("%s: brcms_attach failed!\n", __func__);
5b435de0
AS		 1224 return -ENODEV;
1225 }
cd864522
PH		 1226 brcms_led_register(wl);
1227
5b435de0
AS		 1228 return 0;
1229}
1230
7d5869e7 1231static int brcms_suspend(struct bcma_device *pdev)
5b435de0
AS		 1232{
1233 struct brcms_info *wl;
1234 struct ieee80211_hw *hw;
1235
2e756560 1236 hw = bcma_get_drvdata(pdev);
5b435de0
AS		 1237 wl = hw->priv;
1238 if (!wl) {
137dabed
AS		 1239 pr_err("%s: %s: no driver private struct!\n", KBUILD_MODNAME,
1240 __func__);
5b435de0
AS		 1241 return -ENODEV;
1242 }
1243
1244 /* only need to flag hw is down for proper resume */
1245 spin_lock_bh(&wl->lock);
1246 wl->pub->hw_up = false;
1247 spin_unlock_bh(&wl->lock);
1248
b353dda4 1249 brcms_dbg_info(wl->wlc->hw->d11core, "brcms_suspend ok\n");
5b435de0 1250
2e756560
AS		 1251 return 0;
1252}
1253
1254static int brcms_resume(struct bcma_device *pdev)
1255{
7e9e7fa4 1256 return 0;
5b435de0
AS		 1257}
1258
2e756560 1259static struct bcma_driver brcms_bcma_driver = {
5b435de0 1260 .name = KBUILD_MODNAME,
2e756560 1261 .probe = brcms_bcma_probe,
5b435de0
AS		 1262 .suspend = brcms_suspend,
1263 .resume = brcms_resume,
fcff0c08 1264 .remove = brcms_remove,
2e756560 1265 .id_table = brcms_coreid_table,
5b435de0
AS		 1266};
1267
1268/**
2e756560 1269 * This is the main entry point for the brcmsmac driver.
5b435de0 1270 *
b0c359b2
AS		 1271 * This function is scheduled upon module initialization and
1272 * does the driver registration, which result in brcms_bcma_probe()
1273 * call resulting in the driver bringup.
5b435de0 1274 */
b0c359b2 1275static void brcms_driver_init(struct work_struct *work)
5b435de0 1276{
b0c359b2
AS		 1277 int error;
1278
1279 error = bcma_driver_register(&brcms_bcma_driver);
1280 if (error)
1281 pr_err("%s: register returned %d\n", __func__, error);
1282}
1283
1284static DECLARE_WORK(brcms_driver_work, brcms_driver_init);
5b435de0 1285
b0c359b2
AS		 1286static int __init brcms_module_init(void)
1287{
8e21df23 1288 brcms_debugfs_init();
b0c359b2
AS		 1289 if (!schedule_work(&brcms_driver_work))
1290 return -EBUSY;
5b435de0 1291
b0c359b2 1292 return 0;
5b435de0
AS		 1293}
1294
1295/**
2e756560 1296 * This function unloads the brcmsmac driver from the system.
5b435de0 1297 *
2e756560 1298 * This function unconditionally unloads the brcmsmac driver module from the
5b435de0
AS		 1299 * system.
1300 *
1301 */
1302static void __exit brcms_module_exit(void)
1303{
b0c359b2 1304 cancel_work_sync(&brcms_driver_work);
2e756560 1305 bcma_driver_unregister(&brcms_bcma_driver);
8e21df23 1306 brcms_debugfs_exit();
5b435de0
AS		 1307}
1308
1309module_init(brcms_module_init);
1310module_exit(brcms_module_exit);
1311
1312/*
1313 * precondition: perimeter lock has been acquired
1314 */
1315void brcms_txflowcontrol(struct brcms_info *wl, struct brcms_if *wlif,
1316 bool state, int prio)
1317{
b353dda4 1318 brcms_err(wl->wlc->hw->d11core, "Shouldn't be here %s\n", __func__);
5b435de0
AS		 1319}
1320
1321/*
1322 * precondition: perimeter lock has been acquired
1323 */
1324void brcms_init(struct brcms_info *wl)
1325{
b353dda4
SF		 1326 brcms_dbg_info(wl->wlc->hw->d11core, "Initializing wl%d\n",
1327 wl->pub->unit);
5b435de0 1328 brcms_reset(wl);
dc460127 1329 brcms_c_init(wl->wlc, wl->mute_tx);
5b435de0
AS		 1330}
1331
1332/*
1333 * precondition: perimeter lock has been acquired
1334 */
1335uint brcms_reset(struct brcms_info *wl)
1336{
b353dda4 1337 brcms_dbg_info(wl->wlc->hw->d11core, "Resetting wl%d\n", wl->pub->unit);
5b435de0
AS		 1338 brcms_c_reset(wl->wlc);
1339
1340 /* dpc will not be rescheduled */
3db1cd5c 1341 wl->resched = false;
5b435de0 1342
ea2d2183
VZ		 1343 /* inform publicly that interface is down */
1344 wl->pub->up = false;
1345
5b435de0
AS		 1346 return 0;
1347}
1348
c261bdf8
RV		 1349void brcms_fatal_error(struct brcms_info *wl)
1350{
b353dda4 1351 brcms_err(wl->wlc->hw->d11core, "wl%d: fatal error, reinitializing\n",
c261bdf8
RV		 1352 wl->wlc->pub->unit);
1353 brcms_reset(wl);
1354 ieee80211_restart_hw(wl->pub->ieee_hw);
1355}
1356
5b435de0
AS		 1357/*
1358 * These are interrupt on/off entry points. Disable interrupts
1359 * during interrupt state transition.
1360 */
1361void brcms_intrson(struct brcms_info *wl)
1362{
1363 unsigned long flags;
1364
1365 spin_lock_irqsave(&wl->isr_lock, flags);
1366 brcms_c_intrson(wl->wlc);
1367 spin_unlock_irqrestore(&wl->isr_lock, flags);
1368}
1369
1370u32 brcms_intrsoff(struct brcms_info *wl)
1371{
1372 unsigned long flags;
1373 u32 status;
1374
1375 spin_lock_irqsave(&wl->isr_lock, flags);
1376 status = brcms_c_intrsoff(wl->wlc);
1377 spin_unlock_irqrestore(&wl->isr_lock, flags);
1378 return status;
1379}
1380
1381void brcms_intrsrestore(struct brcms_info *wl, u32 macintmask)
1382{
1383 unsigned long flags;
1384
1385 spin_lock_irqsave(&wl->isr_lock, flags);
1386 brcms_c_intrsrestore(wl->wlc, macintmask);
1387 spin_unlock_irqrestore(&wl->isr_lock, flags);
1388}
1389
1390/*
1391 * precondition: perimeter lock has been acquired
1392 */
1393int brcms_up(struct brcms_info *wl)
1394{
1395 int error = 0;
1396
1397 if (wl->pub->up)
1398 return 0;
1399
1400 error = brcms_c_up(wl->wlc);
1401
1402 return error;
1403}
1404
1405/*
1406 * precondition: perimeter lock has been acquired
1407 */
1408void brcms_down(struct brcms_info *wl)
1409{
1410 uint callbacks, ret_val = 0;
1411
1412 /* call common down function */
1413 ret_val = brcms_c_down(wl->wlc);
1414 callbacks = atomic_read(&wl->callbacks) - ret_val;
1415
1416 /* wait for down callbacks to complete */
1417 spin_unlock_bh(&wl->lock);
1418
1419 /* For HIGH_only driver, it's important to actually schedule other work,
1420 * not just spin wait since everything runs at schedule level
1421 */
1422 SPINWAIT((atomic_read(&wl->callbacks) > callbacks), 100 * 1000);
1423
1424 spin_lock_bh(&wl->lock);
1425}
1426
1427/*
1428* precondition: perimeter lock is not acquired
1429 */
2a7fc5b1 1430static void _brcms_timer(struct work_struct *work)
5b435de0 1431{
2a7fc5b1
RV		 1432 struct brcms_timer *t = container_of(work, struct brcms_timer,
1433 dly_wrk.work);
1434
5b435de0
AS		 1435 spin_lock_bh(&t->wl->lock);
1436
1437 if (t->set) {
1438 if (t->periodic) {
5b435de0 1439 atomic_inc(&t->wl->callbacks);
2a7fc5b1
RV		 1440 ieee80211_queue_delayed_work(t->wl->pub->ieee_hw,
1441 &t->dly_wrk,
1442 msecs_to_jiffies(t->ms));
1443 } else {
5b435de0 1444 t->set = false;
2a7fc5b1 1445 }
5b435de0
AS		 1446
1447 t->fn(t->arg);
1448 }
1449
1450 atomic_dec(&t->wl->callbacks);
1451
1452 spin_unlock_bh(&t->wl->lock);
1453}
1454
5b435de0
AS		 1455/*
1456 * Adds a timer to the list. Caller supplies a timer function.
1457 * Is called from wlc.
1458 *
1459 * precondition: perimeter lock has been acquired
1460 */
1461struct brcms_timer *brcms_init_timer(struct brcms_info *wl,
1462 void (*fn) (void *arg),
1463 void *arg, const char *name)
1464{
1465 struct brcms_timer *t;
1466
1467 t = kzalloc(sizeof(struct brcms_timer), GFP_ATOMIC);
1468 if (!t)
1469 return NULL;
1470
2a7fc5b1 1471 INIT_DELAYED_WORK(&t->dly_wrk, _brcms_timer);
5b435de0
AS		 1472 t->wl = wl;
1473 t->fn = fn;
1474 t->arg = arg;
1475 t->next = wl->timers;
1476 wl->timers = t;
1477
8ae74654 1478#ifdef DEBUG
5b435de0
AS		 1479 t->name = kmalloc(strlen(name) + 1, GFP_ATOMIC);
1480 if (t->name)
1481 strcpy(t->name, name);
1482#endif
1483
1484 return t;
1485}
1486
1487/*
1488 * adds only the kernel timer since it's going to be more accurate
1489 * as well as it's easier to make it periodic
1490 *
1491 * precondition: perimeter lock has been acquired
1492 */
2a7fc5b1 1493void brcms_add_timer(struct brcms_timer *t, uint ms, int periodic)
5b435de0 1494{
2a7fc5b1
RV		 1495 struct ieee80211_hw *hw = t->wl->pub->ieee_hw;
1496
8ae74654 1497#ifdef DEBUG
5b435de0 1498 if (t->set)
b353dda4
SF		 1499 brcms_dbg_info(t->wl->wlc->hw->d11core,
1500 "%s: Already set. Name: %s, per %d\n",
1501 __func__, t->name, periodic);
5b435de0
AS		 1502#endif
1503 t->ms = ms;
1504 t->periodic = (bool) periodic;
01486c5a
PH		 1505 if (!t->set) {
1506 t->set = true;
1507 atomic_inc(&t->wl->callbacks);
1508 }
2a7fc5b1
RV		 1509
1510 ieee80211_queue_delayed_work(hw, &t->dly_wrk, msecs_to_jiffies(ms));
5b435de0
AS		 1511}
1512
1513/*
1514 * return true if timer successfully deleted, false if still pending
1515 *
1516 * precondition: perimeter lock has been acquired
1517 */
be69c4ef 1518bool brcms_del_timer(struct brcms_timer *t)
5b435de0
AS		 1519{
1520 if (t->set) {
1521 t->set = false;
2a7fc5b1 1522 if (!cancel_delayed_work(&t->dly_wrk))
5b435de0
AS		 1523 return false;
1524
be69c4ef 1525 atomic_dec(&t->wl->callbacks);
5b435de0
AS		 1526 }
1527
1528 return true;
1529}
1530
1531/*
1532 * precondition: perimeter lock has been acquired
1533 */
be69c4ef 1534void brcms_free_timer(struct brcms_timer *t)
5b435de0 1535{
be69c4ef 1536 struct brcms_info *wl = t->wl;
5b435de0
AS		 1537 struct brcms_timer *tmp;
1538
1539 /* delete the timer in case it is active */
be69c4ef 1540 brcms_del_timer(t);
5b435de0
AS		 1541
1542 if (wl->timers == t) {
1543 wl->timers = wl->timers->next;
8ae74654 1544#ifdef DEBUG
5b435de0
AS		 1545 kfree(t->name);
1546#endif
1547 kfree(t);
1548 return;
1549
1550 }
1551
1552 tmp = wl->timers;
1553 while (tmp) {
1554 if (tmp->next == t) {
1555 tmp->next = t->next;
8ae74654 1556#ifdef DEBUG
5b435de0
AS		 1557 kfree(t->name);
1558#endif
1559 kfree(t);
1560 return;
1561 }
1562 tmp = tmp->next;
1563 }
1564
1565}
1566
1567/*
1568 * precondition: perimeter lock has been acquired
1569 */
1570int brcms_ucode_init_buf(struct brcms_info *wl, void **pbuf, u32 idx)
1571{
1572 int i, entry;
1573 const u8 *pdata;
1574 struct firmware_hdr *hdr;
1575 for (i = 0; i < wl->fw.fw_cnt; i++) {
1576 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1577 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1578 entry++, hdr++) {
1579 u32 len = le32_to_cpu(hdr->len);
1580 if (le32_to_cpu(hdr->idx) == idx) {
1581 pdata = wl->fw.fw_bin[i]->data +
1582 le32_to_cpu(hdr->offset);
1f1d5289 1583 *pbuf = kmemdup(pdata, len, GFP_ATOMIC);
5b435de0
AS		 1584 if (*pbuf == NULL)
1585 goto fail;
1586
5b435de0
AS		 1587 return 0;
1588 }
1589 }
1590 }
b353dda4
SF		 1591 brcms_err(wl->wlc->hw->d11core,
1592 "ERROR: ucode buf tag:%d can not be found!\n", idx);
5b435de0
AS		 1593 *pbuf = NULL;
1594fail:
1595 return -ENODATA;
1596}
1597
1598/*
2e756560 1599 * Precondition: Since this function is called in brcms_bcma_probe() context,
5b435de0
AS		 1600 * no locking is required.
1601 */
1602int brcms_ucode_init_uint(struct brcms_info *wl, size_t *n_bytes, u32 idx)
1603{
1604 int i, entry;
1605 const u8 *pdata;
1606 struct firmware_hdr *hdr;
1607 for (i = 0; i < wl->fw.fw_cnt; i++) {
1608 hdr = (struct firmware_hdr *)wl->fw.fw_hdr[i]->data;
1609 for (entry = 0; entry < wl->fw.hdr_num_entries[i];
1610 entry++, hdr++) {
1611 if (le32_to_cpu(hdr->idx) == idx) {
1612 pdata = wl->fw.fw_bin[i]->data +
1613 le32_to_cpu(hdr->offset);
1614 if (le32_to_cpu(hdr->len) != 4) {
b353dda4 1615 brcms_err(wl->wlc->hw->d11core,
5b435de0
AS		 1616 "ERROR: fw hdr len\n");
1617 return -ENOMSG;
1618 }
1619 *n_bytes = le32_to_cpu(*((__le32 *) pdata));
1620 return 0;
1621 }
1622 }
1623 }
b353dda4
SF		 1624 brcms_err(wl->wlc->hw->d11core,
1625 "ERROR: ucode tag:%d can not be found!\n", idx);
5b435de0
AS		 1626 return -ENOMSG;
1627}
1628
1629/*
1630 * precondition: can both be called locked and unlocked
1631 */
1632void brcms_ucode_free_buf(void *p)
1633{
1634 kfree(p);
1635}
1636
1637/*
1638 * checks validity of all firmware images loaded from user space
1639 *
2e756560 1640 * Precondition: Since this function is called in brcms_bcma_probe() context,
5b435de0
AS		 1641 * no locking is required.
1642 */
1643int brcms_check_firmwares(struct brcms_info *wl)
1644{
1645 int i;
1646 int entry;
1647 int rc = 0;
1648 const struct firmware *fw;
1649 const struct firmware *fw_hdr;
1650 struct firmware_hdr *ucode_hdr;
1651 for (i = 0; i < MAX_FW_IMAGES && rc == 0; i++) {
1652 fw = wl->fw.fw_bin[i];
1653 fw_hdr = wl->fw.fw_hdr[i];
1654 if (fw == NULL && fw_hdr == NULL) {
1655 break;
1656 } else if (fw == NULL || fw_hdr == NULL) {
1657 wiphy_err(wl->wiphy, "%s: invalid bin/hdr fw\n",
1658 __func__);
1659 rc = -EBADF;
1660 } else if (fw_hdr->size % sizeof(struct firmware_hdr)) {
1661 wiphy_err(wl->wiphy, "%s: non integral fw hdr file "
1662 "size %zu/%zu\n", __func__, fw_hdr->size,
1663 sizeof(struct firmware_hdr));
1664 rc = -EBADF;
1665 } else if (fw->size < MIN_FW_SIZE || fw->size > MAX_FW_SIZE) {
b353dda4
SF		 1666 wiphy_err(wl->wiphy, "%s: out of bounds fw file size %zu\n",
1667 __func__, fw->size);
5b435de0
AS		 1668 rc = -EBADF;
1669 } else {
1670 /* check if ucode section overruns firmware image */
1671 ucode_hdr = (struct firmware_hdr *)fw_hdr->data;
1672 for (entry = 0; entry < wl->fw.hdr_num_entries[i] &&
1673 !rc; entry++, ucode_hdr++) {
1674 if (le32_to_cpu(ucode_hdr->offset) +
1675 le32_to_cpu(ucode_hdr->len) >
1676 fw->size) {
1677 wiphy_err(wl->wiphy,
1678 "%s: conflicting bin/hdr\n",
1679 __func__);
1680 rc = -EBADF;
1681 }
1682 }
1683 }
1684 }
1685 if (rc == 0 && wl->fw.fw_cnt != i) {
1686 wiphy_err(wl->wiphy, "%s: invalid fw_cnt=%d\n", __func__,
1687 wl->fw.fw_cnt);
1688 rc = -EBADF;
1689 }
1690 return rc;
1691}
1692
1693/*
1694 * precondition: perimeter lock has been acquired
1695 */
1696bool brcms_rfkill_set_hw_state(struct brcms_info *wl)
1697{
1698 bool blocked = brcms_c_check_radio_disabled(wl->wlc);
1699
1700 spin_unlock_bh(&wl->lock);
1701 wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, blocked);
1702 if (blocked)
1703 wiphy_rfkill_start_polling(wl->pub->ieee_hw->wiphy);
1704 spin_lock_bh(&wl->lock);
1705 return blocked;
1706}
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