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Linux 4.4.145
[linux/fpc-iii.git] / drivers / net / wireless / ath / wcn36xx / main.c
bloba27279c2c6950913c0b1f14fd4cacdd3bc650428
1 /*
2 * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19 #include <linux/module.h>
20 #include <linux/firmware.h>
21 #include <linux/platform_device.h>
22 #include "wcn36xx.h"
23
24 unsigned int wcn36xx_dbg_mask;
25 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
26 MODULE_PARM_DESC(debug_mask, "Debugging mask");
27
28 #define CHAN2G(_freq, _idx) { \
29 .band = IEEE80211_BAND_2GHZ, \
30 .center_freq = (_freq), \
31 .hw_value = (_idx), \
32 .max_power = 25, \
33 }
34
35 #define CHAN5G(_freq, _idx) { \
36 .band = IEEE80211_BAND_5GHZ, \
37 .center_freq = (_freq), \
38 .hw_value = (_idx), \
39 .max_power = 25, \
40 }
41
42 /* The wcn firmware expects channel values to matching
43 * their mnemonic values. So use these for .hw_value. */
44 static struct ieee80211_channel wcn_2ghz_channels[] = {
45 CHAN2G(2412, 1), /* Channel 1 */
46 CHAN2G(2417, 2), /* Channel 2 */
47 CHAN2G(2422, 3), /* Channel 3 */
48 CHAN2G(2427, 4), /* Channel 4 */
49 CHAN2G(2432, 5), /* Channel 5 */
50 CHAN2G(2437, 6), /* Channel 6 */
51 CHAN2G(2442, 7), /* Channel 7 */
52 CHAN2G(2447, 8), /* Channel 8 */
53 CHAN2G(2452, 9), /* Channel 9 */
54 CHAN2G(2457, 10), /* Channel 10 */
55 CHAN2G(2462, 11), /* Channel 11 */
56 CHAN2G(2467, 12), /* Channel 12 */
57 CHAN2G(2472, 13), /* Channel 13 */
58 CHAN2G(2484, 14) /* Channel 14 */
59
60 };
61
62 static struct ieee80211_channel wcn_5ghz_channels[] = {
63 CHAN5G(5180, 36),
64 CHAN5G(5200, 40),
65 CHAN5G(5220, 44),
66 CHAN5G(5240, 48),
67 CHAN5G(5260, 52),
68 CHAN5G(5280, 56),
69 CHAN5G(5300, 60),
70 CHAN5G(5320, 64),
71 CHAN5G(5500, 100),
72 CHAN5G(5520, 104),
73 CHAN5G(5540, 108),
74 CHAN5G(5560, 112),
75 CHAN5G(5580, 116),
76 CHAN5G(5600, 120),
77 CHAN5G(5620, 124),
78 CHAN5G(5640, 128),
79 CHAN5G(5660, 132),
80 CHAN5G(5700, 140),
81 CHAN5G(5745, 149),
82 CHAN5G(5765, 153),
83 CHAN5G(5785, 157),
84 CHAN5G(5805, 161),
85 CHAN5G(5825, 165)
86 };
87
88 #define RATE(_bitrate, _hw_rate, _flags) { \
89 .bitrate = (_bitrate), \
90 .flags = (_flags), \
91 .hw_value = (_hw_rate), \
92 .hw_value_short = (_hw_rate) \
93 }
94
95 static struct ieee80211_rate wcn_2ghz_rates[] = {
96 RATE(10, HW_RATE_INDEX_1MBPS, 0),
97 RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
98 RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
99 RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
100 RATE(60, HW_RATE_INDEX_6MBPS, 0),
101 RATE(90, HW_RATE_INDEX_9MBPS, 0),
102 RATE(120, HW_RATE_INDEX_12MBPS, 0),
103 RATE(180, HW_RATE_INDEX_18MBPS, 0),
104 RATE(240, HW_RATE_INDEX_24MBPS, 0),
105 RATE(360, HW_RATE_INDEX_36MBPS, 0),
106 RATE(480, HW_RATE_INDEX_48MBPS, 0),
107 RATE(540, HW_RATE_INDEX_54MBPS, 0)
108 };
109
110 static struct ieee80211_rate wcn_5ghz_rates[] = {
111 RATE(60, HW_RATE_INDEX_6MBPS, 0),
112 RATE(90, HW_RATE_INDEX_9MBPS, 0),
113 RATE(120, HW_RATE_INDEX_12MBPS, 0),
114 RATE(180, HW_RATE_INDEX_18MBPS, 0),
115 RATE(240, HW_RATE_INDEX_24MBPS, 0),
116 RATE(360, HW_RATE_INDEX_36MBPS, 0),
117 RATE(480, HW_RATE_INDEX_48MBPS, 0),
118 RATE(540, HW_RATE_INDEX_54MBPS, 0)
119 };
120
121 static struct ieee80211_supported_band wcn_band_2ghz = {
122 .channels = wcn_2ghz_channels,
123 .n_channels = ARRAY_SIZE(wcn_2ghz_channels),
124 .bitrates = wcn_2ghz_rates,
125 .n_bitrates = ARRAY_SIZE(wcn_2ghz_rates),
126 .ht_cap = {
127 .cap = IEEE80211_HT_CAP_GRN_FLD |
128 IEEE80211_HT_CAP_SGI_20 |
129 IEEE80211_HT_CAP_DSSSCCK40 |
130 IEEE80211_HT_CAP_LSIG_TXOP_PROT,
131 .ht_supported = true,
132 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
133 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
134 .mcs = {
135 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
136 .rx_highest = cpu_to_le16(72),
137 .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
138 }
139 }
140 };
141
142 static struct ieee80211_supported_band wcn_band_5ghz = {
143 .channels = wcn_5ghz_channels,
144 .n_channels = ARRAY_SIZE(wcn_5ghz_channels),
145 .bitrates = wcn_5ghz_rates,
146 .n_bitrates = ARRAY_SIZE(wcn_5ghz_rates),
147 .ht_cap = {
148 .cap = IEEE80211_HT_CAP_GRN_FLD |
149 IEEE80211_HT_CAP_SGI_20 |
150 IEEE80211_HT_CAP_DSSSCCK40 |
151 IEEE80211_HT_CAP_LSIG_TXOP_PROT |
152 IEEE80211_HT_CAP_SGI_40 |
153 IEEE80211_HT_CAP_SUP_WIDTH_20_40,
154 .ht_supported = true,
155 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
156 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
157 .mcs = {
158 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
159 .rx_highest = cpu_to_le16(72),
160 .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
161 }
162 }
163 };
164
165 #ifdef CONFIG_PM
166
167 static const struct wiphy_wowlan_support wowlan_support = {
168 .flags = WIPHY_WOWLAN_ANY
169 };
170
171 #endif
172
173 static inline u8 get_sta_index(struct ieee80211_vif *vif,
174 struct wcn36xx_sta *sta_priv)
175 {
176 return NL80211_IFTYPE_STATION == vif->type ?
177 sta_priv->bss_sta_index :
178 sta_priv->sta_index;
179 }
180
181 static const char * const wcn36xx_caps_names[] = {
182 "MCC", /* 0 */
183 "P2P", /* 1 */
184 "DOT11AC", /* 2 */
185 "SLM_SESSIONIZATION", /* 3 */
186 "DOT11AC_OPMODE", /* 4 */
187 "SAP32STA", /* 5 */
188 "TDLS", /* 6 */
189 "P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */
190 "WLANACTIVE_OFFLOAD", /* 8 */
191 "BEACON_OFFLOAD", /* 9 */
192 "SCAN_OFFLOAD", /* 10 */
193 "ROAM_OFFLOAD", /* 11 */
194 "BCN_MISS_OFFLOAD", /* 12 */
195 "STA_POWERSAVE", /* 13 */
196 "STA_ADVANCED_PWRSAVE", /* 14 */
197 "AP_UAPSD", /* 15 */
198 "AP_DFS", /* 16 */
199 "BLOCKACK", /* 17 */
200 "PHY_ERR", /* 18 */
201 "BCN_FILTER", /* 19 */
202 "RTT", /* 20 */
203 "RATECTRL", /* 21 */
204 "WOW" /* 22 */
205 };
206
207 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)
208 {
209 if (x >= ARRAY_SIZE(wcn36xx_caps_names))
210 return "UNKNOWN";
211 return wcn36xx_caps_names[x];
212 }
213
214 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
215 {
216 int i;
217
218 for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
219 if (get_feat_caps(wcn->fw_feat_caps, i))
220 wcn36xx_info("FW Cap %s\n", wcn36xx_get_cap_name(i));
221 }
222 }
223
224 static void wcn36xx_detect_chip_version(struct wcn36xx *wcn)
225 {
226 if (get_feat_caps(wcn->fw_feat_caps, DOT11AC)) {
227 wcn36xx_info("Chip is 3680\n");
228 wcn->chip_version = WCN36XX_CHIP_3680;
229 } else {
230 wcn36xx_info("Chip is 3660\n");
231 wcn->chip_version = WCN36XX_CHIP_3660;
232 }
233 }
234
235 static int wcn36xx_start(struct ieee80211_hw *hw)
236 {
237 struct wcn36xx *wcn = hw->priv;
238 int ret;
239
240 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
241
242 /* SMD initialization */
243 ret = wcn36xx_smd_open(wcn);
244 if (ret) {
245 wcn36xx_err("Failed to open smd channel: %d\n", ret);
246 goto out_err;
247 }
248
249 /* Allocate memory pools for Mgmt BD headers and Data BD headers */
250 ret = wcn36xx_dxe_allocate_mem_pools(wcn);
251 if (ret) {
252 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
253 goto out_smd_close;
254 }
255
256 ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
257 if (ret) {
258 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
259 goto out_free_dxe_pool;
260 }
261
262 wcn->hal_buf = kmalloc(WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
263 if (!wcn->hal_buf) {
264 wcn36xx_err("Failed to allocate smd buf\n");
265 ret = -ENOMEM;
266 goto out_free_dxe_ctl;
267 }
268
269 ret = wcn36xx_smd_load_nv(wcn);
270 if (ret) {
271 wcn36xx_err("Failed to push NV to chip\n");
272 goto out_free_smd_buf;
273 }
274
275 ret = wcn36xx_smd_start(wcn);
276 if (ret) {
277 wcn36xx_err("Failed to start chip\n");
278 goto out_free_smd_buf;
279 }
280
281 if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
282 ret = wcn36xx_smd_feature_caps_exchange(wcn);
283 if (ret)
284 wcn36xx_warn("Exchange feature caps failed\n");
285 else
286 wcn36xx_feat_caps_info(wcn);
287 }
288
289 wcn36xx_detect_chip_version(wcn);
290
291 /* DMA channel initialization */
292 ret = wcn36xx_dxe_init(wcn);
293 if (ret) {
294 wcn36xx_err("DXE init failed\n");
295 goto out_smd_stop;
296 }
297
298 wcn36xx_debugfs_init(wcn);
299
300 INIT_LIST_HEAD(&wcn->vif_list);
301 spin_lock_init(&wcn->dxe_lock);
302
303 return 0;
304
305 out_smd_stop:
306 wcn36xx_smd_stop(wcn);
307 out_free_smd_buf:
308 kfree(wcn->hal_buf);
309 out_free_dxe_pool:
310 wcn36xx_dxe_free_mem_pools(wcn);
311 out_free_dxe_ctl:
312 wcn36xx_dxe_free_ctl_blks(wcn);
313 out_smd_close:
314 wcn36xx_smd_close(wcn);
315 out_err:
316 return ret;
317 }
318
319 static void wcn36xx_stop(struct ieee80211_hw *hw)
320 {
321 struct wcn36xx *wcn = hw->priv;
322
323 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
324
325 wcn36xx_debugfs_exit(wcn);
326 wcn36xx_smd_stop(wcn);
327 wcn36xx_dxe_deinit(wcn);
328 wcn36xx_smd_close(wcn);
329
330 wcn36xx_dxe_free_mem_pools(wcn);
331 wcn36xx_dxe_free_ctl_blks(wcn);
332
333 kfree(wcn->hal_buf);
334 }
335
336 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
337 {
338 struct wcn36xx *wcn = hw->priv;
339 struct ieee80211_vif *vif = NULL;
340 struct wcn36xx_vif *tmp;
341
342 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
343
344 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
345 int ch = WCN36XX_HW_CHANNEL(wcn);
346 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
347 ch);
348 list_for_each_entry(tmp, &wcn->vif_list, list) {
349 vif = container_of((void *)tmp,
350 struct ieee80211_vif,
351 drv_priv);
352 wcn36xx_smd_switch_channel(wcn, vif, ch);
353 }
354 }
355
356 return 0;
357 }
358
359 #define WCN36XX_SUPPORTED_FILTERS (0)
360
361 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
362 unsigned int changed,
363 unsigned int *total, u64 multicast)
364 {
365 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
366
367 *total &= WCN36XX_SUPPORTED_FILTERS;
368 }
369
370 static void wcn36xx_tx(struct ieee80211_hw *hw,
371 struct ieee80211_tx_control *control,
372 struct sk_buff *skb)
373 {
374 struct wcn36xx *wcn = hw->priv;
375 struct wcn36xx_sta *sta_priv = NULL;
376
377 if (control->sta)
378 sta_priv = (struct wcn36xx_sta *)control->sta->drv_priv;
379
380 if (wcn36xx_start_tx(wcn, sta_priv, skb))
381 ieee80211_free_txskb(wcn->hw, skb);
382 }
383
384 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
385 struct ieee80211_vif *vif,
386 struct ieee80211_sta *sta,
387 struct ieee80211_key_conf *key_conf)
388 {
389 struct wcn36xx *wcn = hw->priv;
390 struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
391 struct wcn36xx_sta *sta_priv = vif_priv->sta;
392 int ret = 0;
393 u8 key[WLAN_MAX_KEY_LEN];
394
395 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
396 wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
397 cmd, key_conf->cipher, key_conf->keyidx,
398 key_conf->keylen, key_conf->flags);
399 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
400 key_conf->key,
401 key_conf->keylen);
402
403 switch (key_conf->cipher) {
404 case WLAN_CIPHER_SUITE_WEP40:
405 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
406 break;
407 case WLAN_CIPHER_SUITE_WEP104:
408 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
409 break;
410 case WLAN_CIPHER_SUITE_CCMP:
411 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
412 break;
413 case WLAN_CIPHER_SUITE_TKIP:
414 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
415 break;
416 default:
417 wcn36xx_err("Unsupported key type 0x%x\n",
418 key_conf->cipher);
419 ret = -EOPNOTSUPP;
420 goto out;
421 }
422
423 switch (cmd) {
424 case SET_KEY:
425 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
426 /*
427 * Supplicant is sending key in the wrong order:
428 * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
429 * but HW expects it to be in the order as described in
430 * IEEE 802.11 spec (see chapter 11.7) like this:
431 * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
432 */
433 memcpy(key, key_conf->key, 16);
434 memcpy(key + 16, key_conf->key + 24, 8);
435 memcpy(key + 24, key_conf->key + 16, 8);
436 } else {
437 memcpy(key, key_conf->key, key_conf->keylen);
438 }
439
440 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
441 sta_priv->is_data_encrypted = true;
442 /* Reconfigure bss with encrypt_type */
443 if (NL80211_IFTYPE_STATION == vif->type)
444 wcn36xx_smd_config_bss(wcn,
445 vif,
446 sta,
447 sta->addr,
448 true);
449
450 wcn36xx_smd_set_stakey(wcn,
451 vif_priv->encrypt_type,
452 key_conf->keyidx,
453 key_conf->keylen,
454 key,
455 get_sta_index(vif, sta_priv));
456 } else {
457 wcn36xx_smd_set_bsskey(wcn,
458 vif_priv->encrypt_type,
459 key_conf->keyidx,
460 key_conf->keylen,
461 key);
462 if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
463 (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
464 sta_priv->is_data_encrypted = true;
465 wcn36xx_smd_set_stakey(wcn,
466 vif_priv->encrypt_type,
467 key_conf->keyidx,
468 key_conf->keylen,
469 key,
470 get_sta_index(vif, sta_priv));
471 }
472 }
473 break;
474 case DISABLE_KEY:
475 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
476 wcn36xx_smd_remove_bsskey(wcn,
477 vif_priv->encrypt_type,
478 key_conf->keyidx);
479 } else {
480 sta_priv->is_data_encrypted = false;
481 /* do not remove key if disassociated */
482 if (sta_priv->aid)
483 wcn36xx_smd_remove_stakey(wcn,
484 vif_priv->encrypt_type,
485 key_conf->keyidx,
486 get_sta_index(vif, sta_priv));
487 }
488 break;
489 default:
490 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
491 ret = -EOPNOTSUPP;
492 goto out;
493 }
494
495 out:
496 return ret;
497 }
498
499 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
500 struct ieee80211_vif *vif,
501 const u8 *mac_addr)
502 {
503 struct wcn36xx *wcn = hw->priv;
504
505 wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
506 wcn36xx_smd_start_scan(wcn);
507 }
508
509 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
510 struct ieee80211_vif *vif)
511 {
512 struct wcn36xx *wcn = hw->priv;
513
514 wcn36xx_smd_end_scan(wcn);
515 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
516 }
517
518 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
519 enum ieee80211_band band)
520 {
521 int i, size;
522 u16 *rates_table;
523 struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
524 u32 rates = sta->supp_rates[band];
525
526 memset(&sta_priv->supported_rates, 0,
527 sizeof(sta_priv->supported_rates));
528 sta_priv->supported_rates.op_rate_mode = STA_11n;
529
530 size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
531 rates_table = sta_priv->supported_rates.dsss_rates;
532 if (band == IEEE80211_BAND_2GHZ) {
533 for (i = 0; i < size; i++) {
534 if (rates & 0x01) {
535 rates_table[i] = wcn_2ghz_rates[i].hw_value;
536 rates = rates >> 1;
537 }
538 }
539 }
540
541 size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
542 rates_table = sta_priv->supported_rates.ofdm_rates;
543 for (i = 0; i < size; i++) {
544 if (rates & 0x01) {
545 rates_table[i] = wcn_5ghz_rates[i].hw_value;
546 rates = rates >> 1;
547 }
548 }
549
550 if (sta->ht_cap.ht_supported) {
551 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
552 sizeof(sta_priv->supported_rates.supported_mcs_set));
553 memcpy(sta_priv->supported_rates.supported_mcs_set,
554 sta->ht_cap.mcs.rx_mask,
555 sizeof(sta->ht_cap.mcs.rx_mask));
556 }
557 }
558 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
559 {
560 u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
561 HW_RATE_INDEX_6MBPS,
562 HW_RATE_INDEX_9MBPS,
563 HW_RATE_INDEX_12MBPS,
564 HW_RATE_INDEX_18MBPS,
565 HW_RATE_INDEX_24MBPS,
566 HW_RATE_INDEX_36MBPS,
567 HW_RATE_INDEX_48MBPS,
568 HW_RATE_INDEX_54MBPS
569 };
570 u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
571 HW_RATE_INDEX_1MBPS,
572 HW_RATE_INDEX_2MBPS,
573 HW_RATE_INDEX_5_5MBPS,
574 HW_RATE_INDEX_11MBPS
575 };
576
577 rates->op_rate_mode = STA_11n;
578 memcpy(rates->dsss_rates, dsss_rates,
579 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
580 memcpy(rates->ofdm_rates, ofdm_rates,
581 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
582 rates->supported_mcs_set[0] = 0xFF;
583 }
584 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
585 struct ieee80211_vif *vif,
586 struct ieee80211_bss_conf *bss_conf,
587 u32 changed)
588 {
589 struct wcn36xx *wcn = hw->priv;
590 struct sk_buff *skb = NULL;
591 u16 tim_off, tim_len;
592 enum wcn36xx_hal_link_state link_state;
593 struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
594
595 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
596 vif, changed);
597
598 if (changed & BSS_CHANGED_BEACON_INFO) {
599 wcn36xx_dbg(WCN36XX_DBG_MAC,
600 "mac bss changed dtim period %d\n",
601 bss_conf->dtim_period);
602
603 vif_priv->dtim_period = bss_conf->dtim_period;
604 }
605
606 if (changed & BSS_CHANGED_PS) {
607 wcn36xx_dbg(WCN36XX_DBG_MAC,
608 "mac bss PS set %d\n",
609 bss_conf->ps);
610 if (bss_conf->ps) {
611 wcn36xx_pmc_enter_bmps_state(wcn, vif);
612 } else {
613 wcn36xx_pmc_exit_bmps_state(wcn, vif);
614 }
615 }
616
617 if (changed & BSS_CHANGED_BSSID) {
618 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
619 bss_conf->bssid);
620
621 if (!is_zero_ether_addr(bss_conf->bssid)) {
622 vif_priv->is_joining = true;
623 vif_priv->bss_index = 0xff;
624 wcn36xx_smd_join(wcn, bss_conf->bssid,
625 vif->addr, WCN36XX_HW_CHANNEL(wcn));
626 wcn36xx_smd_config_bss(wcn, vif, NULL,
627 bss_conf->bssid, false);
628 } else {
629 vif_priv->is_joining = false;
630 wcn36xx_smd_delete_bss(wcn, vif);
631 }
632 }
633
634 if (changed & BSS_CHANGED_SSID) {
635 wcn36xx_dbg(WCN36XX_DBG_MAC,
636 "mac bss changed ssid\n");
637 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
638 bss_conf->ssid, bss_conf->ssid_len);
639
640 vif_priv->ssid.length = bss_conf->ssid_len;
641 memcpy(&vif_priv->ssid.ssid,
642 bss_conf->ssid,
643 bss_conf->ssid_len);
644 }
645
646 if (changed & BSS_CHANGED_ASSOC) {
647 vif_priv->is_joining = false;
648 if (bss_conf->assoc) {
649 struct ieee80211_sta *sta;
650 struct wcn36xx_sta *sta_priv;
651
652 wcn36xx_dbg(WCN36XX_DBG_MAC,
653 "mac assoc bss %pM vif %pM AID=%d\n",
654 bss_conf->bssid,
655 vif->addr,
656 bss_conf->aid);
657
658 rcu_read_lock();
659 sta = ieee80211_find_sta(vif, bss_conf->bssid);
660 if (!sta) {
661 wcn36xx_err("sta %pM is not found\n",
662 bss_conf->bssid);
663 rcu_read_unlock();
664 goto out;
665 }
666 sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
667
668 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
669
670 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
671 vif->addr,
672 WCN36XX_HAL_LINK_POSTASSOC_STATE);
673 wcn36xx_smd_config_bss(wcn, vif, sta,
674 bss_conf->bssid,
675 true);
676 sta_priv->aid = bss_conf->aid;
677 /*
678 * config_sta must be called from because this is the
679 * place where AID is available.
680 */
681 wcn36xx_smd_config_sta(wcn, vif, sta);
682 rcu_read_unlock();
683 } else {
684 wcn36xx_dbg(WCN36XX_DBG_MAC,
685 "disassociated bss %pM vif %pM AID=%d\n",
686 bss_conf->bssid,
687 vif->addr,
688 bss_conf->aid);
689 wcn36xx_smd_set_link_st(wcn,
690 bss_conf->bssid,
691 vif->addr,
692 WCN36XX_HAL_LINK_IDLE_STATE);
693 }
694 }
695
696 if (changed & BSS_CHANGED_AP_PROBE_RESP) {
697 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
698 skb = ieee80211_proberesp_get(hw, vif);
699 if (!skb) {
700 wcn36xx_err("failed to alloc probereq skb\n");
701 goto out;
702 }
703
704 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
705 dev_kfree_skb(skb);
706 }
707
708 if (changed & BSS_CHANGED_BEACON_ENABLED ||
709 changed & BSS_CHANGED_BEACON) {
710 wcn36xx_dbg(WCN36XX_DBG_MAC,
711 "mac bss changed beacon enabled %d\n",
712 bss_conf->enable_beacon);
713
714 if (bss_conf->enable_beacon) {
715 vif_priv->dtim_period = bss_conf->dtim_period;
716 vif_priv->bss_index = 0xff;
717 wcn36xx_smd_config_bss(wcn, vif, NULL,
718 vif->addr, false);
719 skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
720 &tim_len);
721 if (!skb) {
722 wcn36xx_err("failed to alloc beacon skb\n");
723 goto out;
724 }
725 wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
726 dev_kfree_skb(skb);
727
728 if (vif->type == NL80211_IFTYPE_ADHOC ||
729 vif->type == NL80211_IFTYPE_MESH_POINT)
730 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
731 else
732 link_state = WCN36XX_HAL_LINK_AP_STATE;
733
734 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
735 link_state);
736 } else {
737 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
738 WCN36XX_HAL_LINK_IDLE_STATE);
739 wcn36xx_smd_delete_bss(wcn, vif);
740 }
741 }
742 out:
743 return;
744 }
745
746 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
747 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
748 {
749 struct wcn36xx *wcn = hw->priv;
750 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
751
752 wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
753 return 0;
754 }
755
756 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
757 struct ieee80211_vif *vif)
758 {
759 struct wcn36xx *wcn = hw->priv;
760 struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
761 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
762
763 list_del(&vif_priv->list);
764 wcn36xx_smd_delete_sta_self(wcn, vif->addr);
765 }
766
767 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
768 struct ieee80211_vif *vif)
769 {
770 struct wcn36xx *wcn = hw->priv;
771 struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
772
773 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
774 vif, vif->type);
775
776 if (!(NL80211_IFTYPE_STATION == vif->type ||
777 NL80211_IFTYPE_AP == vif->type ||
778 NL80211_IFTYPE_ADHOC == vif->type ||
779 NL80211_IFTYPE_MESH_POINT == vif->type)) {
780 wcn36xx_warn("Unsupported interface type requested: %d\n",
781 vif->type);
782 return -EOPNOTSUPP;
783 }
784
785 list_add(&vif_priv->list, &wcn->vif_list);
786 wcn36xx_smd_add_sta_self(wcn, vif);
787
788 return 0;
789 }
790
791 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
792 struct ieee80211_sta *sta)
793 {
794 struct wcn36xx *wcn = hw->priv;
795 struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
796 struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
797 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
798 vif, sta->addr);
799
800 spin_lock_init(&sta_priv->ampdu_lock);
801 vif_priv->sta = sta_priv;
802 sta_priv->vif = vif_priv;
803 /*
804 * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
805 * at this stage AID is not available yet.
806 */
807 if (NL80211_IFTYPE_STATION != vif->type) {
808 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
809 sta_priv->aid = sta->aid;
810 wcn36xx_smd_config_sta(wcn, vif, sta);
811 }
812 return 0;
813 }
814
815 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
816 struct ieee80211_vif *vif,
817 struct ieee80211_sta *sta)
818 {
819 struct wcn36xx *wcn = hw->priv;
820 struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
821 struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
822
823 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
824 vif, sta->addr, sta_priv->sta_index);
825
826 wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
827 vif_priv->sta = NULL;
828 sta_priv->vif = NULL;
829 return 0;
830 }
831
832 #ifdef CONFIG_PM
833
834 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
835 {
836 struct wcn36xx *wcn = hw->priv;
837
838 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
839
840 flush_workqueue(wcn->hal_ind_wq);
841 wcn36xx_smd_set_power_params(wcn, true);
842 return 0;
843 }
844
845 static int wcn36xx_resume(struct ieee80211_hw *hw)
846 {
847 struct wcn36xx *wcn = hw->priv;
848
849 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
850
851 flush_workqueue(wcn->hal_ind_wq);
852 wcn36xx_smd_set_power_params(wcn, false);
853 return 0;
854 }
855
856 #endif
857
858 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
859 struct ieee80211_vif *vif,
860 struct ieee80211_ampdu_params *params)
861 {
862 struct wcn36xx *wcn = hw->priv;
863 struct wcn36xx_sta *sta_priv = NULL;
864 struct ieee80211_sta *sta = params->sta;
865 enum ieee80211_ampdu_mlme_action action = params->action;
866 u16 tid = params->tid;
867 u16 *ssn = &params->ssn;
868
869 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
870 action, tid);
871
872 sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
873
874 switch (action) {
875 case IEEE80211_AMPDU_RX_START:
876 sta_priv->tid = tid;
877 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
878 get_sta_index(vif, sta_priv));
879 wcn36xx_smd_add_ba(wcn);
880 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
881 break;
882 case IEEE80211_AMPDU_RX_STOP:
883 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
884 break;
885 case IEEE80211_AMPDU_TX_START:
886 spin_lock_bh(&sta_priv->ampdu_lock);
887 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
888 spin_unlock_bh(&sta_priv->ampdu_lock);
889
890 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
891 break;
892 case IEEE80211_AMPDU_TX_OPERATIONAL:
893 spin_lock_bh(&sta_priv->ampdu_lock);
894 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
895 spin_unlock_bh(&sta_priv->ampdu_lock);
896
897 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
898 get_sta_index(vif, sta_priv));
899 break;
900 case IEEE80211_AMPDU_TX_STOP_FLUSH:
901 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
902 case IEEE80211_AMPDU_TX_STOP_CONT:
903 spin_lock_bh(&sta_priv->ampdu_lock);
904 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
905 spin_unlock_bh(&sta_priv->ampdu_lock);
906
907 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
908 break;
909 default:
910 wcn36xx_err("Unknown AMPDU action\n");
911 }
912
913 return 0;
914 }
915
916 static const struct ieee80211_ops wcn36xx_ops = {
917 .start = wcn36xx_start,
918 .stop = wcn36xx_stop,
919 .add_interface = wcn36xx_add_interface,
920 .remove_interface = wcn36xx_remove_interface,
921 #ifdef CONFIG_PM
922 .suspend = wcn36xx_suspend,
923 .resume = wcn36xx_resume,
924 #endif
925 .config = wcn36xx_config,
926 .configure_filter = wcn36xx_configure_filter,
927 .tx = wcn36xx_tx,
928 .set_key = wcn36xx_set_key,
929 .sw_scan_start = wcn36xx_sw_scan_start,
930 .sw_scan_complete = wcn36xx_sw_scan_complete,
931 .bss_info_changed = wcn36xx_bss_info_changed,
932 .set_rts_threshold = wcn36xx_set_rts_threshold,
933 .sta_add = wcn36xx_sta_add,
934 .sta_remove = wcn36xx_sta_remove,
935 .ampdu_action = wcn36xx_ampdu_action,
936 };
937
938 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
939 {
940 int ret = 0;
941
942 static const u32 cipher_suites[] = {
943 WLAN_CIPHER_SUITE_WEP40,
944 WLAN_CIPHER_SUITE_WEP104,
945 WLAN_CIPHER_SUITE_TKIP,
946 WLAN_CIPHER_SUITE_CCMP,
947 };
948
949 ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
950 ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
951 ieee80211_hw_set(wcn->hw, CONNECTION_MONITOR);
952 ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
953 ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
954 ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
955
956 wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
957 BIT(NL80211_IFTYPE_AP) |
958 BIT(NL80211_IFTYPE_ADHOC) |
959 BIT(NL80211_IFTYPE_MESH_POINT);
960
961 wcn->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wcn_band_2ghz;
962 wcn->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wcn_band_5ghz;
963
964 wcn->hw->wiphy->cipher_suites = cipher_suites;
965 wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
966
967 wcn->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
968
969 #ifdef CONFIG_PM
970 wcn->hw->wiphy->wowlan = &wowlan_support;
971 #endif
972
973 wcn->hw->max_listen_interval = 200;
974
975 wcn->hw->queues = 4;
976
977 SET_IEEE80211_DEV(wcn->hw, wcn->dev);
978
979 wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
980 wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
981
982 return ret;
983 }
984
985 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
986 struct platform_device *pdev)
987 {
988 struct resource *res;
989 /* Set TX IRQ */
990 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
991 "wcnss_wlantx_irq");
992 if (!res) {
993 wcn36xx_err("failed to get tx_irq\n");
994 return -ENOENT;
995 }
996 wcn->tx_irq = res->start;
997
998 /* Set RX IRQ */
999 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
1000 "wcnss_wlanrx_irq");
1001 if (!res) {
1002 wcn36xx_err("failed to get rx_irq\n");
1003 return -ENOENT;
1004 }
1005 wcn->rx_irq = res->start;
1006
1007 /* Map the memory */
1008 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
1009 "wcnss_mmio");
1010 if (!res) {
1011 wcn36xx_err("failed to get mmio\n");
1012 return -ENOENT;
1013 }
1014 wcn->mmio = ioremap(res->start, resource_size(res));
1015 if (!wcn->mmio) {
1016 wcn36xx_err("failed to map io memory\n");
1017 return -ENOMEM;
1018 }
1019 return 0;
1020 }
1021
1022 static int wcn36xx_probe(struct platform_device *pdev)
1023 {
1024 struct ieee80211_hw *hw;
1025 struct wcn36xx *wcn;
1026 int ret;
1027 u8 addr[ETH_ALEN];
1028
1029 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1030
1031 hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1032 if (!hw) {
1033 wcn36xx_err("failed to alloc hw\n");
1034 ret = -ENOMEM;
1035 goto out_err;
1036 }
1037 platform_set_drvdata(pdev, hw);
1038 wcn = hw->priv;
1039 wcn->hw = hw;
1040 wcn->dev = &pdev->dev;
1041 wcn->ctrl_ops = pdev->dev.platform_data;
1042
1043 mutex_init(&wcn->hal_mutex);
1044
1045 if (!wcn->ctrl_ops->get_hw_mac(addr)) {
1046 wcn36xx_info("mac address: %pM\n", addr);
1047 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1048 }
1049
1050 ret = wcn36xx_platform_get_resources(wcn, pdev);
1051 if (ret)
1052 goto out_wq;
1053
1054 wcn36xx_init_ieee80211(wcn);
1055 ret = ieee80211_register_hw(wcn->hw);
1056 if (ret)
1057 goto out_unmap;
1058
1059 return 0;
1060
1061 out_unmap:
1062 iounmap(wcn->mmio);
1063 out_wq:
1064 ieee80211_free_hw(hw);
1065 out_err:
1066 return ret;
1067 }
1068 static int wcn36xx_remove(struct platform_device *pdev)
1069 {
1070 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1071 struct wcn36xx *wcn = hw->priv;
1072 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1073
1074 release_firmware(wcn->nv);
1075 mutex_destroy(&wcn->hal_mutex);
1076
1077 ieee80211_unregister_hw(hw);
1078 iounmap(wcn->mmio);
1079 ieee80211_free_hw(hw);
1080
1081 return 0;
1082 }
1083 static const struct platform_device_id wcn36xx_platform_id_table[] = {
1084 {
1085 .name = "wcn36xx",
1086 .driver_data = 0
1087 },
1088 {}
1089 };
1090 MODULE_DEVICE_TABLE(platform, wcn36xx_platform_id_table);
1091
1092 static struct platform_driver wcn36xx_driver = {
1093 .probe = wcn36xx_probe,
1094 .remove = wcn36xx_remove,
1095 .driver = {
1096 .name = "wcn36xx",
1097 },
1098 .id_table = wcn36xx_platform_id_table,
1099 };
1100
1101 static int __init wcn36xx_init(void)
1102 {
1103 platform_driver_register(&wcn36xx_driver);
1104 return 0;
1105 }
1106 module_init(wcn36xx_init);
1107
1108 static void __exit wcn36xx_exit(void)
1109 {
1110 platform_driver_unregister(&wcn36xx_driver);
1111 }
1112 module_exit(wcn36xx_exit);
1113
1114 MODULE_LICENSE("Dual BSD/GPL");
1115 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1116 MODULE_FIRMWARE(WLAN_NV_FILE);
Linux with added FPC-III support