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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
24unsigned int wcn36xx_dbg_mask;
25module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
26MODULE_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. */
44static 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
62static 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
95static 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
110static 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
121static 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
142static 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
167static const struct wiphy_wowlan_support wowlan_support = {
168 .flags = WIPHY_WOWLAN_ANY
169};
170
171#endif
172
173static 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
181static 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
207static 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
214static 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
224static 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
235static 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 return 0;
302
303out_smd_stop:
304 wcn36xx_smd_stop(wcn);
305out_free_smd_buf:
306 kfree(wcn->hal_buf);
307out_free_dxe_pool:
308 wcn36xx_dxe_free_mem_pools(wcn);
309out_free_dxe_ctl:
310 wcn36xx_dxe_free_ctl_blks(wcn);
311out_smd_close:
312 wcn36xx_smd_close(wcn);
313out_err:
314 return ret;
315}
316
317static void wcn36xx_stop(struct ieee80211_hw *hw)
318{
319 struct wcn36xx *wcn = hw->priv;
320
321 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
322
323 wcn36xx_debugfs_exit(wcn);
324 wcn36xx_smd_stop(wcn);
325 wcn36xx_dxe_deinit(wcn);
326 wcn36xx_smd_close(wcn);
327
328 wcn36xx_dxe_free_mem_pools(wcn);
329 wcn36xx_dxe_free_ctl_blks(wcn);
330
331 kfree(wcn->hal_buf);
332}
333
334static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
335{
336 struct wcn36xx *wcn = hw->priv;
337 struct ieee80211_vif *vif = NULL;
338 struct wcn36xx_vif *tmp;
339
340 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
341
342 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
343 int ch = WCN36XX_HW_CHANNEL(wcn);
344 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
345 ch);
346 list_for_each_entry(tmp, &wcn->vif_list, list) {
347 vif = container_of((void *)tmp,
348 struct ieee80211_vif,
349 drv_priv);
350 wcn36xx_smd_switch_channel(wcn, vif, ch);
351 }
352 }
353
354 return 0;
355}
356
357#define WCN36XX_SUPPORTED_FILTERS (0)
358
359static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
360 unsigned int changed,
361 unsigned int *total, u64 multicast)
362{
363 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
364
365 *total &= WCN36XX_SUPPORTED_FILTERS;
366}
367
368static void wcn36xx_tx(struct ieee80211_hw *hw,
369 struct ieee80211_tx_control *control,
370 struct sk_buff *skb)
371{
372 struct wcn36xx *wcn = hw->priv;
373 struct wcn36xx_sta *sta_priv = NULL;
374
375 if (control->sta)
376 sta_priv = (struct wcn36xx_sta *)control->sta->drv_priv;
377
378 if (wcn36xx_start_tx(wcn, sta_priv, skb))
379 ieee80211_free_txskb(wcn->hw, skb);
380}
381
382static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
383 struct ieee80211_vif *vif,
384 struct ieee80211_sta *sta,
385 struct ieee80211_key_conf *key_conf)
386{
387 struct wcn36xx *wcn = hw->priv;
388 struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
389 struct wcn36xx_sta *sta_priv = vif_priv->sta;
390 int ret = 0;
391 u8 key[WLAN_MAX_KEY_LEN];
392
393 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
394 wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
395 cmd, key_conf->cipher, key_conf->keyidx,
396 key_conf->keylen, key_conf->flags);
397 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
398 key_conf->key,
399 key_conf->keylen);
400
401 switch (key_conf->cipher) {
402 case WLAN_CIPHER_SUITE_WEP40:
403 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
404 break;
405 case WLAN_CIPHER_SUITE_WEP104:
406 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
407 break;
408 case WLAN_CIPHER_SUITE_CCMP:
409 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
410 break;
411 case WLAN_CIPHER_SUITE_TKIP:
412 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
413 break;
414 default:
415 wcn36xx_err("Unsupported key type 0x%x\n",
416 key_conf->cipher);
417 ret = -EOPNOTSUPP;
418 goto out;
419 }
420
421 switch (cmd) {
422 case SET_KEY:
423 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
424 /*
425 * Supplicant is sending key in the wrong order:
426 * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
427 * but HW expects it to be in the order as described in
428 * IEEE 802.11 spec (see chapter 11.7) like this:
429 * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
430 */
431 memcpy(key, key_conf->key, 16);
432 memcpy(key + 16, key_conf->key + 24, 8);
433 memcpy(key + 24, key_conf->key + 16, 8);
434 } else {
435 memcpy(key, key_conf->key, key_conf->keylen);
436 }
437
438 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
439 sta_priv->is_data_encrypted = true;
440 /* Reconfigure bss with encrypt_type */
441 if (NL80211_IFTYPE_STATION == vif->type)
442 wcn36xx_smd_config_bss(wcn,
443 vif,
444 sta,
445 sta->addr,
446 true);
447
448 wcn36xx_smd_set_stakey(wcn,
449 vif_priv->encrypt_type,
450 key_conf->keyidx,
451 key_conf->keylen,
452 key,
453 get_sta_index(vif, sta_priv));
454 } else {
455 wcn36xx_smd_set_bsskey(wcn,
456 vif_priv->encrypt_type,
457 key_conf->keyidx,
458 key_conf->keylen,
459 key);
460 if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
461 (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
462 sta_priv->is_data_encrypted = true;
463 wcn36xx_smd_set_stakey(wcn,
464 vif_priv->encrypt_type,
465 key_conf->keyidx,
466 key_conf->keylen,
467 key,
468 get_sta_index(vif, sta_priv));
469 }
470 }
471 break;
472 case DISABLE_KEY:
473 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
474 wcn36xx_smd_remove_bsskey(wcn,
475 vif_priv->encrypt_type,
476 key_conf->keyidx);
477 } else {
478 sta_priv->is_data_encrypted = false;
479 /* do not remove key if disassociated */
480 if (sta_priv->aid)
481 wcn36xx_smd_remove_stakey(wcn,
482 vif_priv->encrypt_type,
483 key_conf->keyidx,
484 get_sta_index(vif, sta_priv));
485 }
486 break;
487 default:
488 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
489 ret = -EOPNOTSUPP;
490 goto out;
491 break;
492 }
493
494out:
495 return ret;
496}
497
498static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw)
499{
500 struct wcn36xx *wcn = hw->priv;
501
502 wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
503 wcn36xx_smd_start_scan(wcn);
504}
505
506static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw)
507{
508 struct wcn36xx *wcn = hw->priv;
509
510 wcn36xx_smd_end_scan(wcn);
511 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
512}
513
514static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
515 enum ieee80211_band band)
516{
517 int i, size;
518 u16 *rates_table;
519 struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
520 u32 rates = sta->supp_rates[band];
521
522 memset(&sta_priv->supported_rates, 0,
523 sizeof(sta_priv->supported_rates));
524 sta_priv->supported_rates.op_rate_mode = STA_11n;
525
526 size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
527 rates_table = sta_priv->supported_rates.dsss_rates;
528 if (band == IEEE80211_BAND_2GHZ) {
529 for (i = 0; i < size; i++) {
530 if (rates & 0x01) {
531 rates_table[i] = wcn_2ghz_rates[i].hw_value;
532 rates = rates >> 1;
533 }
534 }
535 }
536
537 size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
538 rates_table = sta_priv->supported_rates.ofdm_rates;
539 for (i = 0; i < size; i++) {
540 if (rates & 0x01) {
541 rates_table[i] = wcn_5ghz_rates[i].hw_value;
542 rates = rates >> 1;
543 }
544 }
545
546 if (sta->ht_cap.ht_supported) {
547 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
548 sizeof(sta_priv->supported_rates.supported_mcs_set));
549 memcpy(sta_priv->supported_rates.supported_mcs_set,
550 sta->ht_cap.mcs.rx_mask,
551 sizeof(sta->ht_cap.mcs.rx_mask));
552 }
553}
554void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
555{
556 u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
557 HW_RATE_INDEX_6MBPS,
558 HW_RATE_INDEX_9MBPS,
559 HW_RATE_INDEX_12MBPS,
560 HW_RATE_INDEX_18MBPS,
561 HW_RATE_INDEX_24MBPS,
562 HW_RATE_INDEX_36MBPS,
563 HW_RATE_INDEX_48MBPS,
564 HW_RATE_INDEX_54MBPS
565 };
566 u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
567 HW_RATE_INDEX_1MBPS,
568 HW_RATE_INDEX_2MBPS,
569 HW_RATE_INDEX_5_5MBPS,
570 HW_RATE_INDEX_11MBPS
571 };
572
573 rates->op_rate_mode = STA_11n;
574 memcpy(rates->dsss_rates, dsss_rates,
575 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
576 memcpy(rates->ofdm_rates, ofdm_rates,
577 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
578 rates->supported_mcs_set[0] = 0xFF;
579}
580static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
581 struct ieee80211_vif *vif,
582 struct ieee80211_bss_conf *bss_conf,
583 u32 changed)
584{
585 struct wcn36xx *wcn = hw->priv;
586 struct sk_buff *skb = NULL;
587 u16 tim_off, tim_len;
588 enum wcn36xx_hal_link_state link_state;
589 struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
590
591 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
592 vif, changed);
593
594 if (changed & BSS_CHANGED_BEACON_INFO) {
595 wcn36xx_dbg(WCN36XX_DBG_MAC,
596 "mac bss changed dtim period %d\n",
597 bss_conf->dtim_period);
598
599 vif_priv->dtim_period = bss_conf->dtim_period;
600 }
601
602 if (changed & BSS_CHANGED_PS) {
603 wcn36xx_dbg(WCN36XX_DBG_MAC,
604 "mac bss PS set %d\n",
605 bss_conf->ps);
606 if (bss_conf->ps) {
607 wcn36xx_pmc_enter_bmps_state(wcn, vif);
608 } else {
609 wcn36xx_pmc_exit_bmps_state(wcn, vif);
610 }
611 }
612
613 if (changed & BSS_CHANGED_BSSID) {
614 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
615 bss_conf->bssid);
616
617 if (!is_zero_ether_addr(bss_conf->bssid)) {
618 vif_priv->is_joining = true;
619 vif_priv->bss_index = 0xff;
620 wcn36xx_smd_join(wcn, bss_conf->bssid,
621 vif->addr, WCN36XX_HW_CHANNEL(wcn));
622 wcn36xx_smd_config_bss(wcn, vif, NULL,
623 bss_conf->bssid, false);
624 } else {
625 vif_priv->is_joining = false;
626 wcn36xx_smd_delete_bss(wcn, vif);
627 }
628 }
629
630 if (changed & BSS_CHANGED_SSID) {
631 wcn36xx_dbg(WCN36XX_DBG_MAC,
632 "mac bss changed ssid\n");
633 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
634 bss_conf->ssid, bss_conf->ssid_len);
635
636 vif_priv->ssid.length = bss_conf->ssid_len;
637 memcpy(&vif_priv->ssid.ssid,
638 bss_conf->ssid,
639 bss_conf->ssid_len);
640 }
641
642 if (changed & BSS_CHANGED_ASSOC) {
643 vif_priv->is_joining = false;
644 if (bss_conf->assoc) {
645 struct ieee80211_sta *sta;
646 struct wcn36xx_sta *sta_priv;
647
648 wcn36xx_dbg(WCN36XX_DBG_MAC,
649 "mac assoc bss %pM vif %pM AID=%d\n",
650 bss_conf->bssid,
651 vif->addr,
652 bss_conf->aid);
653
654 rcu_read_lock();
655 sta = ieee80211_find_sta(vif, bss_conf->bssid);
656 if (!sta) {
657 wcn36xx_err("sta %pM is not found\n",
658 bss_conf->bssid);
659 rcu_read_unlock();
660 goto out;
661 }
662 sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
663
664 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
665
666 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
667 vif->addr,
668 WCN36XX_HAL_LINK_POSTASSOC_STATE);
669 wcn36xx_smd_config_bss(wcn, vif, sta,
670 bss_conf->bssid,
671 true);
672 sta_priv->aid = bss_conf->aid;
673 /*
674 * config_sta must be called from because this is the
675 * place where AID is available.
676 */
677 wcn36xx_smd_config_sta(wcn, vif, sta);
678 rcu_read_unlock();
679 } else {
680 wcn36xx_dbg(WCN36XX_DBG_MAC,
681 "disassociated bss %pM vif %pM AID=%d\n",
682 bss_conf->bssid,
683 vif->addr,
684 bss_conf->aid);
685 wcn36xx_smd_set_link_st(wcn,
686 bss_conf->bssid,
687 vif->addr,
688 WCN36XX_HAL_LINK_IDLE_STATE);
689 }
690 }
691
692 if (changed & BSS_CHANGED_AP_PROBE_RESP) {
693 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
694 skb = ieee80211_proberesp_get(hw, vif);
695 if (!skb) {
696 wcn36xx_err("failed to alloc probereq skb\n");
697 goto out;
698 }
699
700 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
701 dev_kfree_skb(skb);
702 }
703
704 if (changed & BSS_CHANGED_BEACON_ENABLED ||
705 changed & BSS_CHANGED_BEACON) {
706 wcn36xx_dbg(WCN36XX_DBG_MAC,
707 "mac bss changed beacon enabled %d\n",
708 bss_conf->enable_beacon);
709
710 if (bss_conf->enable_beacon) {
711 vif_priv->dtim_period = bss_conf->dtim_period;
712 vif_priv->bss_index = 0xff;
713 wcn36xx_smd_config_bss(wcn, vif, NULL,
714 vif->addr, false);
715 skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
716 &tim_len);
717 if (!skb) {
718 wcn36xx_err("failed to alloc beacon skb\n");
719 goto out;
720 }
721 wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
722 dev_kfree_skb(skb);
723
724 if (vif->type == NL80211_IFTYPE_ADHOC ||
725 vif->type == NL80211_IFTYPE_MESH_POINT)
726 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
727 else
728 link_state = WCN36XX_HAL_LINK_AP_STATE;
729
730 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
731 link_state);
732 } else {
733 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
734 WCN36XX_HAL_LINK_IDLE_STATE);
735 wcn36xx_smd_delete_bss(wcn, vif);
736 }
737 }
738out:
739 return;
740}
741
742/* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
743static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
744{
745 struct wcn36xx *wcn = hw->priv;
746 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
747
748 wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
749 return 0;
750}
751
752static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
753 struct ieee80211_vif *vif)
754{
755 struct wcn36xx *wcn = hw->priv;
756 struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
757 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
758
759 list_del(&vif_priv->list);
760 wcn36xx_smd_delete_sta_self(wcn, vif->addr);
761}
762
763static int wcn36xx_add_interface(struct ieee80211_hw *hw,
764 struct ieee80211_vif *vif)
765{
766 struct wcn36xx *wcn = hw->priv;
767 struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
768
769 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
770 vif, vif->type);
771
772 if (!(NL80211_IFTYPE_STATION == vif->type ||
773 NL80211_IFTYPE_AP == vif->type ||
774 NL80211_IFTYPE_ADHOC == vif->type ||
775 NL80211_IFTYPE_MESH_POINT == vif->type)) {
776 wcn36xx_warn("Unsupported interface type requested: %d\n",
777 vif->type);
778 return -EOPNOTSUPP;
779 }
780
781 list_add(&vif_priv->list, &wcn->vif_list);
782 wcn36xx_smd_add_sta_self(wcn, vif);
783
784 return 0;
785}
786
787static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
788 struct ieee80211_sta *sta)
789{
790 struct wcn36xx *wcn = hw->priv;
791 struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
792 struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
793 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
794 vif, sta->addr);
795
796 vif_priv->sta = sta_priv;
797 sta_priv->vif = vif_priv;
798 /*
799 * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
800 * at this stage AID is not available yet.
801 */
802 if (NL80211_IFTYPE_STATION != vif->type) {
803 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
804 sta_priv->aid = sta->aid;
805 wcn36xx_smd_config_sta(wcn, vif, sta);
806 }
807 return 0;
808}
809
810static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
811 struct ieee80211_vif *vif,
812 struct ieee80211_sta *sta)
813{
814 struct wcn36xx *wcn = hw->priv;
815 struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
816 struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
817
818 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
819 vif, sta->addr, sta_priv->sta_index);
820
821 wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
822 vif_priv->sta = NULL;
823 sta_priv->vif = NULL;
824 return 0;
825}
826
827#ifdef CONFIG_PM
828
829static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
830{
831 struct wcn36xx *wcn = hw->priv;
832
833 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
834
835 flush_workqueue(wcn->hal_ind_wq);
836 wcn36xx_smd_set_power_params(wcn, true);
837 return 0;
838}
839
840static int wcn36xx_resume(struct ieee80211_hw *hw)
841{
842 struct wcn36xx *wcn = hw->priv;
843
844 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
845
846 flush_workqueue(wcn->hal_ind_wq);
847 wcn36xx_smd_set_power_params(wcn, false);
848 return 0;
849}
850
851#endif
852
853static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
854 struct ieee80211_vif *vif,
855 enum ieee80211_ampdu_mlme_action action,
856 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
857 u8 buf_size)
858{
859 struct wcn36xx *wcn = hw->priv;
860 struct wcn36xx_sta *sta_priv = NULL;
861
862 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
863 action, tid);
864
865 sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
866
867 switch (action) {
868 case IEEE80211_AMPDU_RX_START:
869 sta_priv->tid = tid;
870 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
871 get_sta_index(vif, sta_priv));
872 wcn36xx_smd_add_ba(wcn);
873 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
874 ieee80211_start_tx_ba_session(sta, tid, 0);
875 break;
876 case IEEE80211_AMPDU_RX_STOP:
877 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
878 break;
879 case IEEE80211_AMPDU_TX_START:
880 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
881 break;
882 case IEEE80211_AMPDU_TX_OPERATIONAL:
883 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
884 get_sta_index(vif, sta_priv));
885 break;
886 case IEEE80211_AMPDU_TX_STOP_FLUSH:
887 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
888 case IEEE80211_AMPDU_TX_STOP_CONT:
889 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
890 break;
891 default:
892 wcn36xx_err("Unknown AMPDU action\n");
893 }
894
895 return 0;
896}
897
898static const struct ieee80211_ops wcn36xx_ops = {
899 .start = wcn36xx_start,
900 .stop = wcn36xx_stop,
901 .add_interface = wcn36xx_add_interface,
902 .remove_interface = wcn36xx_remove_interface,
903#ifdef CONFIG_PM
904 .suspend = wcn36xx_suspend,
905 .resume = wcn36xx_resume,
906#endif
907 .config = wcn36xx_config,
908 .configure_filter = wcn36xx_configure_filter,
909 .tx = wcn36xx_tx,
910 .set_key = wcn36xx_set_key,
911 .sw_scan_start = wcn36xx_sw_scan_start,
912 .sw_scan_complete = wcn36xx_sw_scan_complete,
913 .bss_info_changed = wcn36xx_bss_info_changed,
914 .set_rts_threshold = wcn36xx_set_rts_threshold,
915 .sta_add = wcn36xx_sta_add,
916 .sta_remove = wcn36xx_sta_remove,
917 .ampdu_action = wcn36xx_ampdu_action,
918};
919
920static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
921{
922 int ret = 0;
923
924 static const u32 cipher_suites[] = {
925 WLAN_CIPHER_SUITE_WEP40,
926 WLAN_CIPHER_SUITE_WEP104,
927 WLAN_CIPHER_SUITE_TKIP,
928 WLAN_CIPHER_SUITE_CCMP,
929 };
930
931 wcn->hw->flags = IEEE80211_HW_SIGNAL_DBM |
932 IEEE80211_HW_HAS_RATE_CONTROL |
933 IEEE80211_HW_SUPPORTS_PS |
934 IEEE80211_HW_CONNECTION_MONITOR |
935 IEEE80211_HW_AMPDU_AGGREGATION |
936 IEEE80211_HW_TIMING_BEACON_ONLY;
937
938 wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
939 BIT(NL80211_IFTYPE_AP) |
940 BIT(NL80211_IFTYPE_ADHOC) |
941 BIT(NL80211_IFTYPE_MESH_POINT);
942
943 wcn->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wcn_band_2ghz;
944 wcn->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wcn_band_5ghz;
945
946 wcn->hw->wiphy->cipher_suites = cipher_suites;
947 wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
948
949 wcn->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
950
951#ifdef CONFIG_PM
952 wcn->hw->wiphy->wowlan = &wowlan_support;
953#endif
954
955 wcn->hw->max_listen_interval = 200;
956
957 wcn->hw->queues = 4;
958
959 SET_IEEE80211_DEV(wcn->hw, wcn->dev);
960
961 wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
962 wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
963
964 return ret;
965}
966
967static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
968 struct platform_device *pdev)
969{
970 struct resource *res;
971 /* Set TX IRQ */
972 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
973 "wcnss_wlantx_irq");
974 if (!res) {
975 wcn36xx_err("failed to get tx_irq\n");
976 return -ENOENT;
977 }
978 wcn->tx_irq = res->start;
979
980 /* Set RX IRQ */
981 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
982 "wcnss_wlanrx_irq");
983 if (!res) {
984 wcn36xx_err("failed to get rx_irq\n");
985 return -ENOENT;
986 }
987 wcn->rx_irq = res->start;
988
989 /* Map the memory */
990 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
991 "wcnss_mmio");
992 if (!res) {
993 wcn36xx_err("failed to get mmio\n");
994 return -ENOENT;
995 }
996 wcn->mmio = ioremap(res->start, resource_size(res));
997 if (!wcn->mmio) {
998 wcn36xx_err("failed to map io memory\n");
999 return -ENOMEM;
1000 }
1001 return 0;
1002}
1003
1004static int wcn36xx_probe(struct platform_device *pdev)
1005{
1006 struct ieee80211_hw *hw;
1007 struct wcn36xx *wcn;
1008 int ret;
1009 u8 addr[ETH_ALEN];
1010
1011 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1012
1013 hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1014 if (!hw) {
1015 wcn36xx_err("failed to alloc hw\n");
1016 ret = -ENOMEM;
1017 goto out_err;
1018 }
1019 platform_set_drvdata(pdev, hw);
1020 wcn = hw->priv;
1021 wcn->hw = hw;
1022 wcn->dev = &pdev->dev;
1023 wcn->ctrl_ops = pdev->dev.platform_data;
1024
1025 mutex_init(&wcn->hal_mutex);
1026
1027 if (!wcn->ctrl_ops->get_hw_mac(addr)) {
1028 wcn36xx_info("mac address: %pM\n", addr);
1029 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1030 }
1031
1032 ret = wcn36xx_platform_get_resources(wcn, pdev);
1033 if (ret)
1034 goto out_wq;
1035
1036 wcn36xx_init_ieee80211(wcn);
1037 ret = ieee80211_register_hw(wcn->hw);
1038 if (ret)
1039 goto out_unmap;
1040
1041 return 0;
1042
1043out_unmap:
1044 iounmap(wcn->mmio);
1045out_wq:
1046 ieee80211_free_hw(hw);
1047out_err:
1048 return ret;
1049}
1050static int wcn36xx_remove(struct platform_device *pdev)
1051{
1052 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1053 struct wcn36xx *wcn = hw->priv;
1054 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1055
1056 release_firmware(wcn->nv);
1057 mutex_destroy(&wcn->hal_mutex);
1058
1059 ieee80211_unregister_hw(hw);
1060 iounmap(wcn->mmio);
1061 ieee80211_free_hw(hw);
1062
1063 return 0;
1064}
1065static const struct platform_device_id wcn36xx_platform_id_table[] = {
1066 {
1067 .name = "wcn36xx",
1068 .driver_data = 0
1069 },
1070 {}
1071};
1072MODULE_DEVICE_TABLE(platform, wcn36xx_platform_id_table);
1073
1074static struct platform_driver wcn36xx_driver = {
1075 .probe = wcn36xx_probe,
1076 .remove = wcn36xx_remove,
1077 .driver = {
1078 .name = "wcn36xx",
1079 .owner = THIS_MODULE,
1080 },
1081 .id_table = wcn36xx_platform_id_table,
1082};
1083
1084static int __init wcn36xx_init(void)
1085{
1086 platform_driver_register(&wcn36xx_driver);
1087 return 0;
1088}
1089module_init(wcn36xx_init);
1090
1091static void __exit wcn36xx_exit(void)
1092{
1093 platform_driver_unregister(&wcn36xx_driver);
1094}
1095module_exit(wcn36xx_exit);
1096
1097MODULE_LICENSE("Dual BSD/GPL");
1098MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1099MODULE_FIRMWARE(WLAN_NV_FILE);