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 <linux/of.h>
23 #include <linux/of_address.h>
24 #include <linux/rpmsg.h>
25 #include <linux/soc/qcom/smem_state.h>
26 #include <linux/soc/qcom/wcnss_ctrl.h>
27 #include <net/ipv6.h>
28 #include "wcn36xx.h"
29 #include "testmode.h"
30 #include "firmware.h"
31
32 unsigned int wcn36xx_dbg_mask;
33 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
34 MODULE_PARM_DESC(debug_mask, "Debugging mask");
35
36 #define CHAN2G(_freq, _idx) { \
37 .band = NL80211_BAND_2GHZ, \
38 .center_freq = (_freq), \
39 .hw_value = (_idx), \
40 .max_power = 25, \
41 }
42
43 #define CHAN5G(_freq, _idx, _phy_val) { \
44 .band = NL80211_BAND_5GHZ, \
45 .center_freq = (_freq), \
46 .hw_value = (_phy_val) << HW_VALUE_PHY_SHIFT | HW_VALUE_CHANNEL(_idx), \
47 .max_power = 25, \
48 }
49
50 /* The wcn firmware expects channel values to matching
51 * their mnemonic values. So use these for .hw_value. */
52 static struct ieee80211_channel wcn_2ghz_channels[] = {
53 CHAN2G(2412, 1), /* Channel 1 */
54 CHAN2G(2417, 2), /* Channel 2 */
55 CHAN2G(2422, 3), /* Channel 3 */
56 CHAN2G(2427, 4), /* Channel 4 */
57 CHAN2G(2432, 5), /* Channel 5 */
58 CHAN2G(2437, 6), /* Channel 6 */
59 CHAN2G(2442, 7), /* Channel 7 */
60 CHAN2G(2447, 8), /* Channel 8 */
61 CHAN2G(2452, 9), /* Channel 9 */
62 CHAN2G(2457, 10), /* Channel 10 */
63 CHAN2G(2462, 11), /* Channel 11 */
64 CHAN2G(2467, 12), /* Channel 12 */
65 CHAN2G(2472, 13), /* Channel 13 */
66 CHAN2G(2484, 14) /* Channel 14 */
67
68 };
69
70 static struct ieee80211_channel wcn_5ghz_channels[] = {
71 CHAN5G(5180, 36, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
72 CHAN5G(5200, 40, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
73 CHAN5G(5220, 44, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
74 CHAN5G(5240, 48, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
75 CHAN5G(5260, 52, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
76 CHAN5G(5280, 56, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
77 CHAN5G(5300, 60, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
78 CHAN5G(5320, 64, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
79 CHAN5G(5500, 100, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
80 CHAN5G(5520, 104, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
81 CHAN5G(5540, 108, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
82 CHAN5G(5560, 112, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
83 CHAN5G(5580, 116, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
84 CHAN5G(5600, 120, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
85 CHAN5G(5620, 124, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
86 CHAN5G(5640, 128, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
87 CHAN5G(5660, 132, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
88 CHAN5G(5680, 136, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
89 CHAN5G(5700, 140, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
90 CHAN5G(5720, 144, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
91 CHAN5G(5745, 149, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
92 CHAN5G(5765, 153, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
93 CHAN5G(5785, 157, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
94 CHAN5G(5805, 161, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
95 CHAN5G(5825, 165, 0)
96 };
97
98 #define RATE(_bitrate, _hw_rate, _flags) { \
99 .bitrate = (_bitrate), \
100 .flags = (_flags), \
101 .hw_value = (_hw_rate), \
102 .hw_value_short = (_hw_rate) \
103 }
104
105 static struct ieee80211_rate wcn_2ghz_rates[] = {
106 RATE(10, HW_RATE_INDEX_1MBPS, 0),
107 RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
108 RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
109 RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
110 RATE(60, HW_RATE_INDEX_6MBPS, 0),
111 RATE(90, HW_RATE_INDEX_9MBPS, 0),
112 RATE(120, HW_RATE_INDEX_12MBPS, 0),
113 RATE(180, HW_RATE_INDEX_18MBPS, 0),
114 RATE(240, HW_RATE_INDEX_24MBPS, 0),
115 RATE(360, HW_RATE_INDEX_36MBPS, 0),
116 RATE(480, HW_RATE_INDEX_48MBPS, 0),
117 RATE(540, HW_RATE_INDEX_54MBPS, 0)
118 };
119
120 static struct ieee80211_rate wcn_5ghz_rates[] = {
121 RATE(60, HW_RATE_INDEX_6MBPS, 0),
122 RATE(90, HW_RATE_INDEX_9MBPS, 0),
123 RATE(120, HW_RATE_INDEX_12MBPS, 0),
124 RATE(180, HW_RATE_INDEX_18MBPS, 0),
125 RATE(240, HW_RATE_INDEX_24MBPS, 0),
126 RATE(360, HW_RATE_INDEX_36MBPS, 0),
127 RATE(480, HW_RATE_INDEX_48MBPS, 0),
128 RATE(540, HW_RATE_INDEX_54MBPS, 0)
129 };
130
131 static struct ieee80211_supported_band wcn_band_2ghz = {
132 .channels = wcn_2ghz_channels,
133 .n_channels = ARRAY_SIZE(wcn_2ghz_channels),
134 .bitrates = wcn_2ghz_rates,
135 .n_bitrates = ARRAY_SIZE(wcn_2ghz_rates),
136 .ht_cap = {
137 .cap = IEEE80211_HT_CAP_GRN_FLD |
138 IEEE80211_HT_CAP_SGI_20 |
139 IEEE80211_HT_CAP_DSSSCCK40 |
140 IEEE80211_HT_CAP_LSIG_TXOP_PROT |
141 IEEE80211_HT_CAP_SGI_40 |
142 IEEE80211_HT_CAP_SUP_WIDTH_20_40,
143 .ht_supported = true,
144 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
145 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
146 .mcs = {
147 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
148 .rx_highest = cpu_to_le16(72),
149 .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
150 }
151 }
152 };
153
154 static struct ieee80211_supported_band wcn_band_5ghz = {
155 .channels = wcn_5ghz_channels,
156 .n_channels = ARRAY_SIZE(wcn_5ghz_channels),
157 .bitrates = wcn_5ghz_rates,
158 .n_bitrates = ARRAY_SIZE(wcn_5ghz_rates),
159 .ht_cap = {
160 .cap = IEEE80211_HT_CAP_GRN_FLD |
161 IEEE80211_HT_CAP_SGI_20 |
162 IEEE80211_HT_CAP_DSSSCCK40 |
163 IEEE80211_HT_CAP_LSIG_TXOP_PROT |
164 IEEE80211_HT_CAP_SGI_40 |
165 IEEE80211_HT_CAP_SUP_WIDTH_20_40,
166 .ht_supported = true,
167 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
168 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
169 .mcs = {
170 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
171 .rx_highest = cpu_to_le16(150),
172 .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
173 }
174 }
175 };
176
177 #ifdef CONFIG_PM
178
179 static const struct wiphy_wowlan_support wowlan_support = {
180 .flags = WIPHY_WOWLAN_ANY |
181 WIPHY_WOWLAN_MAGIC_PKT |
182 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY
183 };
184
185 #endif
186
get_sta_index(struct ieee80211_vif * vif,struct wcn36xx_sta * sta_priv)187 static inline u8 get_sta_index(struct ieee80211_vif *vif,
188 struct wcn36xx_sta *sta_priv)
189 {
190 return NL80211_IFTYPE_STATION == vif->type ?
191 sta_priv->bss_sta_index :
192 sta_priv->sta_index;
193 }
194
wcn36xx_feat_caps_info(struct wcn36xx * wcn)195 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
196 {
197 int i;
198
199 for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
200 if (wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, i)) {
201 wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n",
202 wcn36xx_firmware_get_cap_name(i));
203 }
204 }
205 }
206
wcn36xx_start(struct ieee80211_hw * hw)207 static int wcn36xx_start(struct ieee80211_hw *hw)
208 {
209 struct wcn36xx *wcn = hw->priv;
210 int ret;
211
212 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
213
214 /* SMD initialization */
215 ret = wcn36xx_smd_open(wcn);
216 if (ret) {
217 wcn36xx_err("Failed to open smd channel: %d\n", ret);
218 goto out_err;
219 }
220
221 /* Allocate memory pools for Mgmt BD headers and Data BD headers */
222 ret = wcn36xx_dxe_allocate_mem_pools(wcn);
223 if (ret) {
224 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
225 goto out_smd_close;
226 }
227
228 ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
229 if (ret) {
230 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
231 goto out_free_dxe_pool;
232 }
233
234 ret = wcn36xx_smd_load_nv(wcn);
235 if (ret) {
236 wcn36xx_err("Failed to push NV to chip\n");
237 goto out_free_dxe_ctl;
238 }
239
240 ret = wcn36xx_smd_start(wcn);
241 if (ret) {
242 wcn36xx_err("Failed to start chip\n");
243 goto out_free_dxe_ctl;
244 }
245
246 if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
247 ret = wcn36xx_smd_feature_caps_exchange(wcn);
248 if (ret)
249 wcn36xx_warn("Exchange feature caps failed\n");
250 else
251 wcn36xx_feat_caps_info(wcn);
252 }
253
254 /* DMA channel initialization */
255 ret = wcn36xx_dxe_init(wcn);
256 if (ret) {
257 wcn36xx_err("DXE init failed\n");
258 goto out_smd_stop;
259 }
260
261 wcn36xx_debugfs_init(wcn);
262
263 INIT_LIST_HEAD(&wcn->vif_list);
264 spin_lock_init(&wcn->dxe_lock);
265 spin_lock_init(&wcn->survey_lock);
266
267 return 0;
268
269 out_smd_stop:
270 wcn36xx_smd_stop(wcn);
271 out_free_dxe_ctl:
272 wcn36xx_dxe_free_ctl_blks(wcn);
273 out_free_dxe_pool:
274 wcn36xx_dxe_free_mem_pools(wcn);
275 out_smd_close:
276 wcn36xx_smd_close(wcn);
277 out_err:
278 return ret;
279 }
280
wcn36xx_stop(struct ieee80211_hw * hw)281 static void wcn36xx_stop(struct ieee80211_hw *hw)
282 {
283 struct wcn36xx *wcn = hw->priv;
284
285 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
286
287 mutex_lock(&wcn->scan_lock);
288 if (wcn->scan_req) {
289 struct cfg80211_scan_info scan_info = {
290 .aborted = true,
291 };
292
293 ieee80211_scan_completed(wcn->hw, &scan_info);
294 }
295 wcn->scan_req = NULL;
296 mutex_unlock(&wcn->scan_lock);
297
298 wcn36xx_debugfs_exit(wcn);
299 wcn36xx_smd_stop(wcn);
300 wcn36xx_dxe_deinit(wcn);
301 wcn36xx_smd_close(wcn);
302
303 wcn36xx_dxe_free_mem_pools(wcn);
304 wcn36xx_dxe_free_ctl_blks(wcn);
305 }
306
wcn36xx_change_ps(struct wcn36xx * wcn,bool enable)307 static void wcn36xx_change_ps(struct wcn36xx *wcn, bool enable)
308 {
309 struct ieee80211_vif *vif = NULL;
310 struct wcn36xx_vif *tmp;
311
312 list_for_each_entry(tmp, &wcn->vif_list, list) {
313 vif = wcn36xx_priv_to_vif(tmp);
314 if (enable && !wcn->sw_scan) {
315 if (vif->cfg.ps) /* ps allowed ? */
316 wcn36xx_pmc_enter_bmps_state(wcn, vif);
317 } else {
318 wcn36xx_pmc_exit_bmps_state(wcn, vif);
319 }
320 }
321 }
322
wcn36xx_change_opchannel(struct wcn36xx * wcn,int ch)323 static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch)
324 {
325 struct ieee80211_vif *vif = NULL;
326 struct wcn36xx_vif *tmp;
327 struct ieee80211_supported_band *band;
328 struct ieee80211_channel *channel = NULL;
329 unsigned long flags;
330 int i, j;
331
332 for (i = 0; i < ARRAY_SIZE(wcn->hw->wiphy->bands); i++) {
333 band = wcn->hw->wiphy->bands[i];
334 if (!band)
335 break;
336 for (j = 0; j < band->n_channels; j++) {
337 if (HW_VALUE_CHANNEL(band->channels[j].hw_value) == ch) {
338 channel = &band->channels[j];
339 break;
340 }
341 }
342 if (channel)
343 break;
344 }
345
346 if (!channel) {
347 wcn36xx_err("Cannot tune to channel %d\n", ch);
348 return;
349 }
350
351 spin_lock_irqsave(&wcn->survey_lock, flags);
352 wcn->band = band;
353 wcn->channel = channel;
354 spin_unlock_irqrestore(&wcn->survey_lock, flags);
355
356 list_for_each_entry(tmp, &wcn->vif_list, list) {
357 vif = wcn36xx_priv_to_vif(tmp);
358 wcn36xx_smd_switch_channel(wcn, vif, ch);
359 }
360
361 return;
362 }
363
wcn36xx_config(struct ieee80211_hw * hw,u32 changed)364 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
365 {
366 struct wcn36xx *wcn = hw->priv;
367 int ret;
368
369 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
370
371 mutex_lock(&wcn->conf_mutex);
372
373 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
374 int ch = WCN36XX_HW_CHANNEL(wcn);
375 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
376 ch);
377
378 if (wcn->sw_scan_opchannel == ch && wcn->sw_scan_channel) {
379 /* If channel is the initial operating channel, we may
380 * want to receive/transmit regular data packets, then
381 * simply stop the scan session and exit PS mode.
382 */
383 if (wcn->sw_scan_channel)
384 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
385 if (wcn->sw_scan_init) {
386 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
387 wcn->sw_scan_vif);
388 }
389 } else if (wcn->sw_scan) {
390 /* A scan is ongoing, do not change the operating
391 * channel, but start a scan session on the channel.
392 */
393 if (wcn->sw_scan_channel)
394 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
395 if (!wcn->sw_scan_init) {
396 /* This can fail if we are unable to notify the
397 * operating channel.
398 */
399 ret = wcn36xx_smd_init_scan(wcn,
400 HAL_SYS_MODE_SCAN,
401 wcn->sw_scan_vif);
402 if (ret) {
403 mutex_unlock(&wcn->conf_mutex);
404 return -EIO;
405 }
406 }
407 wcn36xx_smd_start_scan(wcn, ch);
408 } else {
409 wcn36xx_change_opchannel(wcn, ch);
410 }
411 }
412
413 if (changed & IEEE80211_CONF_CHANGE_PS)
414 wcn36xx_change_ps(wcn, hw->conf.flags & IEEE80211_CONF_PS);
415
416 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
417 if (hw->conf.flags & IEEE80211_CONF_IDLE)
418 wcn36xx_smd_enter_imps(wcn);
419 else
420 wcn36xx_smd_exit_imps(wcn);
421 }
422
423 mutex_unlock(&wcn->conf_mutex);
424
425 return 0;
426 }
427
wcn36xx_configure_filter(struct ieee80211_hw * hw,unsigned int changed,unsigned int * total,u64 multicast)428 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
429 unsigned int changed,
430 unsigned int *total, u64 multicast)
431 {
432 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
433 struct wcn36xx *wcn = hw->priv;
434 struct wcn36xx_vif *tmp;
435 struct ieee80211_vif *vif = NULL;
436
437 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
438
439 mutex_lock(&wcn->conf_mutex);
440
441 *total &= FIF_ALLMULTI;
442
443 fp = (void *)(unsigned long)multicast;
444 list_for_each_entry(tmp, &wcn->vif_list, list) {
445 vif = wcn36xx_priv_to_vif(tmp);
446
447 /* FW handles MC filtering only when connected as STA */
448 if (*total & FIF_ALLMULTI)
449 wcn36xx_smd_set_mc_list(wcn, vif, NULL);
450 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc)
451 wcn36xx_smd_set_mc_list(wcn, vif, fp);
452 }
453
454 mutex_unlock(&wcn->conf_mutex);
455 kfree(fp);
456 }
457
wcn36xx_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)458 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw,
459 struct netdev_hw_addr_list *mc_list)
460 {
461 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
462 struct netdev_hw_addr *ha;
463
464 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n");
465 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
466 if (!fp) {
467 wcn36xx_err("Out of memory setting filters.\n");
468 return 0;
469 }
470
471 fp->mc_addr_count = 0;
472 /* update multicast filtering parameters */
473 if (netdev_hw_addr_list_count(mc_list) <=
474 WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) {
475 netdev_hw_addr_list_for_each(ha, mc_list) {
476 memcpy(fp->mc_addr[fp->mc_addr_count],
477 ha->addr, ETH_ALEN);
478 fp->mc_addr_count++;
479 }
480 }
481
482 return (u64)(unsigned long)fp;
483 }
484
wcn36xx_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)485 static void wcn36xx_tx(struct ieee80211_hw *hw,
486 struct ieee80211_tx_control *control,
487 struct sk_buff *skb)
488 {
489 struct wcn36xx *wcn = hw->priv;
490 struct wcn36xx_sta *sta_priv = NULL;
491
492 if (control->sta)
493 sta_priv = wcn36xx_sta_to_priv(control->sta);
494
495 if (wcn36xx_start_tx(wcn, sta_priv, skb))
496 ieee80211_free_txskb(wcn->hw, skb);
497 }
498
wcn36xx_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key_conf)499 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
500 struct ieee80211_vif *vif,
501 struct ieee80211_sta *sta,
502 struct ieee80211_key_conf *key_conf)
503 {
504 struct wcn36xx *wcn = hw->priv;
505 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
506 struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL;
507 int ret = 0;
508 u8 key[WLAN_MAX_KEY_LEN];
509
510 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
511 wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
512 cmd, key_conf->cipher, key_conf->keyidx,
513 key_conf->keylen, key_conf->flags);
514 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
515 key_conf->key,
516 key_conf->keylen);
517
518 mutex_lock(&wcn->conf_mutex);
519
520 switch (key_conf->cipher) {
521 case WLAN_CIPHER_SUITE_WEP40:
522 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
523 break;
524 case WLAN_CIPHER_SUITE_WEP104:
525 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104;
526 break;
527 case WLAN_CIPHER_SUITE_CCMP:
528 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
529 break;
530 case WLAN_CIPHER_SUITE_TKIP:
531 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
532 break;
533 default:
534 wcn36xx_err("Unsupported key type 0x%x\n",
535 key_conf->cipher);
536 ret = -EOPNOTSUPP;
537 goto out;
538 }
539
540 switch (cmd) {
541 case SET_KEY:
542 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
543 /*
544 * Supplicant is sending key in the wrong order:
545 * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
546 * but HW expects it to be in the order as described in
547 * IEEE 802.11 spec (see chapter 11.7) like this:
548 * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
549 */
550 memcpy(key, key_conf->key, 16);
551 memcpy(key + 16, key_conf->key + 24, 8);
552 memcpy(key + 24, key_conf->key + 16, 8);
553 } else {
554 memcpy(key, key_conf->key, key_conf->keylen);
555 }
556
557 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
558 sta_priv->is_data_encrypted = true;
559 /* Reconfigure bss with encrypt_type */
560 if (NL80211_IFTYPE_STATION == vif->type) {
561 wcn36xx_smd_config_bss(wcn,
562 vif,
563 sta,
564 sta->addr,
565 true);
566 wcn36xx_smd_config_sta(wcn, vif, sta);
567 }
568
569 wcn36xx_smd_set_stakey(wcn,
570 vif_priv->encrypt_type,
571 key_conf->keyidx,
572 key_conf->keylen,
573 key,
574 get_sta_index(vif, sta_priv));
575 } else {
576 wcn36xx_smd_set_bsskey(wcn,
577 vif_priv->encrypt_type,
578 vif_priv->bss_index,
579 key_conf->keyidx,
580 key_conf->keylen,
581 key);
582
583 if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
584 (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
585 list_for_each_entry(sta_priv,
586 &vif_priv->sta_list, list) {
587 sta_priv->is_data_encrypted = true;
588 wcn36xx_smd_set_stakey(wcn,
589 vif_priv->encrypt_type,
590 key_conf->keyidx,
591 key_conf->keylen,
592 key,
593 get_sta_index(vif, sta_priv));
594 }
595 }
596 }
597 break;
598 case DISABLE_KEY:
599 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
600 if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX)
601 wcn36xx_smd_remove_bsskey(wcn,
602 vif_priv->encrypt_type,
603 vif_priv->bss_index,
604 key_conf->keyidx);
605
606 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
607 } else {
608 sta_priv->is_data_encrypted = false;
609 /* do not remove key if disassociated */
610 if (sta_priv->aid)
611 wcn36xx_smd_remove_stakey(wcn,
612 vif_priv->encrypt_type,
613 key_conf->keyidx,
614 get_sta_index(vif, sta_priv));
615 }
616 break;
617 default:
618 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
619 ret = -EOPNOTSUPP;
620 goto out;
621 }
622
623 out:
624 mutex_unlock(&wcn->conf_mutex);
625
626 return ret;
627 }
628
wcn36xx_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)629 static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
630 struct ieee80211_vif *vif,
631 struct ieee80211_scan_request *hw_req)
632 {
633 struct wcn36xx *wcn = hw->priv;
634
635 if (!wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
636 /* fallback to mac80211 software scan */
637 return 1;
638 }
639
640 /* Firmware scan offload is limited to 48 channels, fallback to
641 * software driven scanning otherwise.
642 */
643 if (hw_req->req.n_channels > 48) {
644 wcn36xx_warn("Offload scan aborted, n_channels=%u",
645 hw_req->req.n_channels);
646 return 1;
647 }
648
649 mutex_lock(&wcn->scan_lock);
650 if (wcn->scan_req) {
651 mutex_unlock(&wcn->scan_lock);
652 return -EBUSY;
653 }
654
655 wcn->scan_aborted = false;
656 wcn->scan_req = &hw_req->req;
657
658 mutex_unlock(&wcn->scan_lock);
659
660 wcn36xx_smd_update_channel_list(wcn, &hw_req->req);
661 return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req);
662 }
663
wcn36xx_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)664 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
665 struct ieee80211_vif *vif)
666 {
667 struct wcn36xx *wcn = hw->priv;
668
669 mutex_lock(&wcn->scan_lock);
670 wcn->scan_aborted = true;
671 mutex_unlock(&wcn->scan_lock);
672
673 if (wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
674 /* ieee80211_scan_completed will be called on FW scan
675 * indication */
676 wcn36xx_smd_stop_hw_scan(wcn);
677 }
678 }
679
wcn36xx_sw_scan_start(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const u8 * mac_addr)680 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
681 struct ieee80211_vif *vif,
682 const u8 *mac_addr)
683 {
684 struct wcn36xx *wcn = hw->priv;
685 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
686
687 wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_start");
688
689 wcn->sw_scan = true;
690 wcn->sw_scan_vif = vif;
691 wcn->sw_scan_channel = 0;
692 if (vif_priv->sta_assoc)
693 wcn->sw_scan_opchannel = WCN36XX_HW_CHANNEL(wcn);
694 else
695 wcn->sw_scan_opchannel = 0;
696 }
697
wcn36xx_sw_scan_complete(struct ieee80211_hw * hw,struct ieee80211_vif * vif)698 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
699 struct ieee80211_vif *vif)
700 {
701 struct wcn36xx *wcn = hw->priv;
702
703 wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_complete");
704
705 /* ensure that any scan session is finished */
706 if (wcn->sw_scan_channel)
707 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
708 if (wcn->sw_scan_init) {
709 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
710 wcn->sw_scan_vif);
711 }
712 wcn->sw_scan = false;
713 wcn->sw_scan_opchannel = 0;
714 }
715
wcn36xx_update_allowed_rates(struct ieee80211_sta * sta,enum nl80211_band band)716 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
717 enum nl80211_band band)
718 {
719 int i, size;
720 u16 *rates_table;
721 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
722 u32 rates = sta->deflink.supp_rates[band];
723
724 memset(&sta_priv->supported_rates, 0,
725 sizeof(sta_priv->supported_rates));
726 sta_priv->supported_rates.op_rate_mode = STA_11n;
727
728 size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
729 rates_table = sta_priv->supported_rates.dsss_rates;
730 if (band == NL80211_BAND_2GHZ) {
731 for (i = 0; i < size; i++) {
732 if (rates & 0x01) {
733 rates_table[i] = wcn_2ghz_rates[i].hw_value;
734 rates = rates >> 1;
735 }
736 }
737 }
738
739 size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
740 rates_table = sta_priv->supported_rates.ofdm_rates;
741 for (i = 0; i < size; i++) {
742 if (rates & 0x01) {
743 rates_table[i] = wcn_5ghz_rates[i].hw_value;
744 rates = rates >> 1;
745 }
746 }
747
748 if (sta->deflink.ht_cap.ht_supported) {
749 BUILD_BUG_ON(sizeof(sta->deflink.ht_cap.mcs.rx_mask) >
750 sizeof(sta_priv->supported_rates.supported_mcs_set));
751 memcpy(sta_priv->supported_rates.supported_mcs_set,
752 sta->deflink.ht_cap.mcs.rx_mask,
753 sizeof(sta->deflink.ht_cap.mcs.rx_mask));
754 }
755
756 if (sta->deflink.vht_cap.vht_supported) {
757 sta_priv->supported_rates.op_rate_mode = STA_11ac;
758 sta_priv->supported_rates.vht_rx_mcs_map =
759 sta->deflink.vht_cap.vht_mcs.rx_mcs_map;
760 sta_priv->supported_rates.vht_tx_mcs_map =
761 sta->deflink.vht_cap.vht_mcs.tx_mcs_map;
762 }
763 }
764
wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates * rates)765 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
766 {
767 u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
768 HW_RATE_INDEX_6MBPS,
769 HW_RATE_INDEX_9MBPS,
770 HW_RATE_INDEX_12MBPS,
771 HW_RATE_INDEX_18MBPS,
772 HW_RATE_INDEX_24MBPS,
773 HW_RATE_INDEX_36MBPS,
774 HW_RATE_INDEX_48MBPS,
775 HW_RATE_INDEX_54MBPS
776 };
777 u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
778 HW_RATE_INDEX_1MBPS,
779 HW_RATE_INDEX_2MBPS,
780 HW_RATE_INDEX_5_5MBPS,
781 HW_RATE_INDEX_11MBPS
782 };
783
784 rates->op_rate_mode = STA_11n;
785 memcpy(rates->dsss_rates, dsss_rates,
786 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
787 memcpy(rates->ofdm_rates, ofdm_rates,
788 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
789 rates->supported_mcs_set[0] = 0xFF;
790 }
791
wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 * rates)792 void wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 *rates)
793 {
794 rates->op_rate_mode = STA_11ac;
795 rates->vht_rx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
796 rates->vht_tx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
797 }
798
wcn36xx_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u64 changed)799 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
800 struct ieee80211_vif *vif,
801 struct ieee80211_bss_conf *bss_conf,
802 u64 changed)
803 {
804 struct wcn36xx *wcn = hw->priv;
805 struct sk_buff *skb = NULL;
806 u16 tim_off, tim_len;
807 enum wcn36xx_hal_link_state link_state;
808 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
809
810 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%llx\n",
811 vif, changed);
812
813 mutex_lock(&wcn->conf_mutex);
814
815 if (changed & BSS_CHANGED_BEACON_INFO) {
816 wcn36xx_dbg(WCN36XX_DBG_MAC,
817 "mac bss changed dtim period %d\n",
818 bss_conf->dtim_period);
819
820 vif_priv->dtim_period = bss_conf->dtim_period;
821 }
822
823 if (changed & BSS_CHANGED_BSSID) {
824 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
825 bss_conf->bssid);
826
827 if (!is_zero_ether_addr(bss_conf->bssid)) {
828 vif_priv->is_joining = true;
829 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
830 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
831 WCN36XX_HAL_LINK_PREASSOC_STATE);
832 wcn36xx_smd_join(wcn, bss_conf->bssid,
833 vif->addr, WCN36XX_HW_CHANNEL(wcn));
834 wcn36xx_smd_config_bss(wcn, vif, NULL,
835 bss_conf->bssid, false);
836 } else {
837 vif_priv->is_joining = false;
838 wcn36xx_smd_delete_bss(wcn, vif);
839 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
840 WCN36XX_HAL_LINK_IDLE_STATE);
841 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
842 }
843 }
844
845 if (changed & BSS_CHANGED_SSID) {
846 wcn36xx_dbg(WCN36XX_DBG_MAC,
847 "mac bss changed ssid\n");
848 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
849 vif->cfg.ssid, vif->cfg.ssid_len);
850
851 vif_priv->ssid.length = vif->cfg.ssid_len;
852 memcpy(&vif_priv->ssid.ssid,
853 vif->cfg.ssid,
854 vif->cfg.ssid_len);
855 }
856
857 if (changed & BSS_CHANGED_ASSOC) {
858 vif_priv->is_joining = false;
859 if (vif->cfg.assoc) {
860 struct ieee80211_sta *sta;
861 struct wcn36xx_sta *sta_priv;
862
863 wcn36xx_dbg(WCN36XX_DBG_MAC,
864 "mac assoc bss %pM vif %pM AID=%d\n",
865 bss_conf->bssid,
866 vif->addr,
867 vif->cfg.aid);
868
869 vif_priv->sta_assoc = true;
870
871 /*
872 * Holding conf_mutex ensures mutal exclusion with
873 * wcn36xx_sta_remove() and as such ensures that sta
874 * won't be freed while we're operating on it. As such
875 * we do not need to hold the rcu_read_lock().
876 */
877 sta = ieee80211_find_sta(vif, bss_conf->bssid);
878 if (!sta) {
879 wcn36xx_err("sta %pM is not found\n",
880 bss_conf->bssid);
881 goto out;
882 }
883 sta_priv = wcn36xx_sta_to_priv(sta);
884
885 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
886
887 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
888 vif->addr,
889 WCN36XX_HAL_LINK_POSTASSOC_STATE);
890 wcn36xx_smd_config_bss(wcn, vif, sta,
891 bss_conf->bssid,
892 true);
893 sta_priv->aid = vif->cfg.aid;
894 /*
895 * config_sta must be called from because this is the
896 * place where AID is available.
897 */
898 wcn36xx_smd_config_sta(wcn, vif, sta);
899 if (vif->type == NL80211_IFTYPE_STATION)
900 wcn36xx_smd_add_beacon_filter(wcn, vif);
901 wcn36xx_enable_keep_alive_null_packet(wcn, vif);
902 } else {
903 wcn36xx_dbg(WCN36XX_DBG_MAC,
904 "disassociated bss %pM vif %pM AID=%d\n",
905 bss_conf->bssid,
906 vif->addr,
907 vif->cfg.aid);
908 vif_priv->sta_assoc = false;
909 wcn36xx_smd_set_link_st(wcn,
910 bss_conf->bssid,
911 vif->addr,
912 WCN36XX_HAL_LINK_IDLE_STATE);
913 }
914 }
915
916 if (changed & BSS_CHANGED_AP_PROBE_RESP) {
917 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
918 skb = ieee80211_proberesp_get(hw, vif);
919 if (!skb) {
920 wcn36xx_err("failed to alloc probereq skb\n");
921 goto out;
922 }
923
924 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
925 dev_kfree_skb(skb);
926 }
927
928 if (changed & BSS_CHANGED_BEACON_ENABLED ||
929 changed & BSS_CHANGED_BEACON) {
930 wcn36xx_dbg(WCN36XX_DBG_MAC,
931 "mac bss changed beacon enabled %d\n",
932 bss_conf->enable_beacon);
933
934 if (bss_conf->enable_beacon) {
935 vif_priv->dtim_period = bss_conf->dtim_period;
936 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
937 wcn36xx_smd_config_bss(wcn, vif, NULL,
938 vif->addr, false);
939 skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
940 &tim_len, 0);
941 if (!skb) {
942 wcn36xx_err("failed to alloc beacon skb\n");
943 goto out;
944 }
945 wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
946 dev_kfree_skb(skb);
947
948 if (vif->type == NL80211_IFTYPE_ADHOC ||
949 vif->type == NL80211_IFTYPE_MESH_POINT)
950 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
951 else
952 link_state = WCN36XX_HAL_LINK_AP_STATE;
953
954 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
955 link_state);
956 } else {
957 wcn36xx_smd_delete_bss(wcn, vif);
958 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
959 WCN36XX_HAL_LINK_IDLE_STATE);
960 }
961 }
962 out:
963
964 mutex_unlock(&wcn->conf_mutex);
965 }
966
967 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
wcn36xx_set_rts_threshold(struct ieee80211_hw * hw,u32 value)968 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
969 {
970 struct wcn36xx *wcn = hw->priv;
971 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
972
973 mutex_lock(&wcn->conf_mutex);
974 wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
975 mutex_unlock(&wcn->conf_mutex);
976
977 return 0;
978 }
979
wcn36xx_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)980 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
981 struct ieee80211_vif *vif)
982 {
983 struct wcn36xx *wcn = hw->priv;
984 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
985 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
986
987 mutex_lock(&wcn->conf_mutex);
988
989 list_del(&vif_priv->list);
990 wcn36xx_smd_delete_sta_self(wcn, vif->addr);
991
992 mutex_unlock(&wcn->conf_mutex);
993 }
994
wcn36xx_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)995 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
996 struct ieee80211_vif *vif)
997 {
998 struct wcn36xx *wcn = hw->priv;
999 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1000
1001 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
1002 vif, vif->type);
1003
1004 if (!(NL80211_IFTYPE_STATION == vif->type ||
1005 NL80211_IFTYPE_AP == vif->type ||
1006 NL80211_IFTYPE_ADHOC == vif->type ||
1007 NL80211_IFTYPE_MESH_POINT == vif->type)) {
1008 wcn36xx_warn("Unsupported interface type requested: %d\n",
1009 vif->type);
1010 return -EOPNOTSUPP;
1011 }
1012
1013 mutex_lock(&wcn->conf_mutex);
1014
1015 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
1016 INIT_LIST_HEAD(&vif_priv->sta_list);
1017 list_add(&vif_priv->list, &wcn->vif_list);
1018 wcn36xx_smd_add_sta_self(wcn, vif);
1019
1020 mutex_unlock(&wcn->conf_mutex);
1021
1022 return 0;
1023 }
1024
wcn36xx_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1025 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1026 struct ieee80211_sta *sta)
1027 {
1028 struct wcn36xx *wcn = hw->priv;
1029 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1030 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1031 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
1032 vif, sta->addr);
1033
1034 mutex_lock(&wcn->conf_mutex);
1035
1036 spin_lock_init(&sta_priv->ampdu_lock);
1037 sta_priv->vif = vif_priv;
1038 list_add(&sta_priv->list, &vif_priv->sta_list);
1039
1040 /*
1041 * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
1042 * at this stage AID is not available yet.
1043 */
1044 if (NL80211_IFTYPE_STATION != vif->type) {
1045 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
1046 sta_priv->aid = sta->aid;
1047 wcn36xx_smd_config_sta(wcn, vif, sta);
1048 }
1049
1050 mutex_unlock(&wcn->conf_mutex);
1051
1052 return 0;
1053 }
1054
wcn36xx_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1055 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
1056 struct ieee80211_vif *vif,
1057 struct ieee80211_sta *sta)
1058 {
1059 struct wcn36xx *wcn = hw->priv;
1060 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1061
1062 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
1063 vif, sta->addr, sta_priv->sta_index);
1064
1065 mutex_lock(&wcn->conf_mutex);
1066
1067 list_del(&sta_priv->list);
1068 wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
1069 sta_priv->vif = NULL;
1070
1071 mutex_unlock(&wcn->conf_mutex);
1072
1073 return 0;
1074 }
1075
1076 #ifdef CONFIG_PM
1077
wcn36xx_get_first_assoc_vif(struct wcn36xx * wcn)1078 static struct ieee80211_vif *wcn36xx_get_first_assoc_vif(struct wcn36xx *wcn)
1079 {
1080 struct wcn36xx_vif *vif_priv = NULL;
1081 struct ieee80211_vif *vif = NULL;
1082
1083 list_for_each_entry(vif_priv, &wcn->vif_list, list) {
1084 if (vif_priv->sta_assoc) {
1085 vif = wcn36xx_priv_to_vif(vif_priv);
1086 break;
1087 }
1088 }
1089 return vif;
1090 }
1091
wcn36xx_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wow)1092 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
1093 {
1094 struct wcn36xx *wcn = hw->priv;
1095 struct ieee80211_vif *vif = NULL;
1096 int ret = 0;
1097
1098 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
1099
1100 mutex_lock(&wcn->conf_mutex);
1101
1102 vif = wcn36xx_get_first_assoc_vif(wcn);
1103 if (vif) {
1104 ret = wcn36xx_smd_arp_offload(wcn, vif, true);
1105 if (ret)
1106 goto out;
1107 ret = wcn36xx_smd_ipv6_ns_offload(wcn, vif, true);
1108 if (ret)
1109 goto out;
1110 ret = wcn36xx_smd_gtk_offload(wcn, vif, true);
1111 if (ret)
1112 goto out;
1113 ret = wcn36xx_smd_set_power_params(wcn, true);
1114 if (ret)
1115 goto out;
1116 ret = wcn36xx_smd_wlan_host_suspend_ind(wcn);
1117 }
1118
1119 /* Disable IRQ, we don't want to handle any packet before mac80211 is
1120 * resumed and ready to receive packets.
1121 */
1122 disable_irq(wcn->tx_irq);
1123 disable_irq(wcn->rx_irq);
1124
1125 out:
1126 mutex_unlock(&wcn->conf_mutex);
1127 return ret;
1128 }
1129
wcn36xx_resume(struct ieee80211_hw * hw)1130 static int wcn36xx_resume(struct ieee80211_hw *hw)
1131 {
1132 struct wcn36xx *wcn = hw->priv;
1133 struct ieee80211_vif *vif = NULL;
1134
1135 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
1136
1137 mutex_lock(&wcn->conf_mutex);
1138 vif = wcn36xx_get_first_assoc_vif(wcn);
1139 if (vif) {
1140 wcn36xx_smd_host_resume(wcn);
1141 wcn36xx_smd_set_power_params(wcn, false);
1142 wcn36xx_smd_gtk_offload_get_info(wcn, vif);
1143 wcn36xx_smd_gtk_offload(wcn, vif, false);
1144 wcn36xx_smd_ipv6_ns_offload(wcn, vif, false);
1145 wcn36xx_smd_arp_offload(wcn, vif, false);
1146 }
1147
1148 enable_irq(wcn->tx_irq);
1149 enable_irq(wcn->rx_irq);
1150
1151 mutex_unlock(&wcn->conf_mutex);
1152
1153 return 0;
1154 }
1155
wcn36xx_set_rekey_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_gtk_rekey_data * data)1156 static void wcn36xx_set_rekey_data(struct ieee80211_hw *hw,
1157 struct ieee80211_vif *vif,
1158 struct cfg80211_gtk_rekey_data *data)
1159 {
1160 struct wcn36xx *wcn = hw->priv;
1161 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1162
1163 mutex_lock(&wcn->conf_mutex);
1164
1165 memcpy(vif_priv->rekey_data.kek, data->kek, NL80211_KEK_LEN);
1166 memcpy(vif_priv->rekey_data.kck, data->kck, NL80211_KCK_LEN);
1167 vif_priv->rekey_data.replay_ctr =
1168 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr));
1169 vif_priv->rekey_data.valid = true;
1170
1171 mutex_unlock(&wcn->conf_mutex);
1172 }
1173
1174 #endif
1175
wcn36xx_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)1176 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
1177 struct ieee80211_vif *vif,
1178 struct ieee80211_ampdu_params *params)
1179 {
1180 struct wcn36xx *wcn = hw->priv;
1181 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta);
1182 struct ieee80211_sta *sta = params->sta;
1183 enum ieee80211_ampdu_mlme_action action = params->action;
1184 u16 tid = params->tid;
1185 u16 *ssn = ¶ms->ssn;
1186 int ret = 0;
1187 int session;
1188
1189 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
1190 action, tid);
1191
1192 mutex_lock(&wcn->conf_mutex);
1193
1194 switch (action) {
1195 case IEEE80211_AMPDU_RX_START:
1196 sta_priv->tid = tid;
1197 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
1198 get_sta_index(vif, sta_priv));
1199 if (session < 0) {
1200 ret = session;
1201 goto out;
1202 }
1203 wcn36xx_smd_add_ba(wcn, session);
1204 break;
1205 case IEEE80211_AMPDU_RX_STOP:
1206 wcn36xx_smd_del_ba(wcn, tid, 0, get_sta_index(vif, sta_priv));
1207 break;
1208 case IEEE80211_AMPDU_TX_START:
1209 spin_lock_bh(&sta_priv->ampdu_lock);
1210 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
1211 spin_unlock_bh(&sta_priv->ampdu_lock);
1212
1213 /* Replace the mac80211 ssn with the firmware one */
1214 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu ssn = %u\n", *ssn);
1215 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv), tid, ssn);
1216 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu fw-ssn = %u\n", *ssn);
1217
1218 /* Start BA session */
1219 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
1220 get_sta_index(vif, sta_priv));
1221 if (session < 0) {
1222 ret = session;
1223 goto out;
1224 }
1225 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
1226 break;
1227 case IEEE80211_AMPDU_TX_OPERATIONAL:
1228 spin_lock_bh(&sta_priv->ampdu_lock);
1229 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
1230 spin_unlock_bh(&sta_priv->ampdu_lock);
1231
1232 break;
1233 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1234 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1235 case IEEE80211_AMPDU_TX_STOP_CONT:
1236 spin_lock_bh(&sta_priv->ampdu_lock);
1237 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
1238 spin_unlock_bh(&sta_priv->ampdu_lock);
1239
1240 wcn36xx_smd_del_ba(wcn, tid, 1, get_sta_index(vif, sta_priv));
1241 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1242 break;
1243 default:
1244 wcn36xx_err("Unknown AMPDU action\n");
1245 }
1246
1247 out:
1248 mutex_unlock(&wcn->conf_mutex);
1249
1250 return ret;
1251 }
1252
1253 #if IS_ENABLED(CONFIG_IPV6)
wcn36xx_ipv6_addr_change(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct inet6_dev * idev)1254 static void wcn36xx_ipv6_addr_change(struct ieee80211_hw *hw,
1255 struct ieee80211_vif *vif,
1256 struct inet6_dev *idev)
1257 {
1258 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1259 struct inet6_ifaddr *ifa;
1260 int idx = 0;
1261
1262 memset(vif_priv->tentative_addrs, 0, sizeof(vif_priv->tentative_addrs));
1263
1264 read_lock_bh(&idev->lock);
1265 list_for_each_entry(ifa, &idev->addr_list, if_list) {
1266 vif_priv->target_ipv6_addrs[idx] = ifa->addr;
1267 if (ifa->flags & IFA_F_TENTATIVE)
1268 __set_bit(idx, vif_priv->tentative_addrs);
1269 idx++;
1270 if (idx >= WCN36XX_HAL_IPV6_OFFLOAD_ADDR_MAX)
1271 break;
1272 wcn36xx_dbg(WCN36XX_DBG_MAC, "%pI6 %s\n", &ifa->addr,
1273 (ifa->flags & IFA_F_TENTATIVE) ? "tentative" : NULL);
1274 }
1275 read_unlock_bh(&idev->lock);
1276
1277 vif_priv->num_target_ipv6_addrs = idx;
1278 }
1279 #endif
1280
wcn36xx_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)1281 static void wcn36xx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1282 u32 queues, bool drop)
1283 {
1284 struct wcn36xx *wcn = hw->priv;
1285
1286 if (wcn36xx_dxe_tx_flush(wcn)) {
1287 wcn36xx_err("Failed to flush hardware tx queues\n");
1288 }
1289 }
1290
wcn36xx_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)1291 static int wcn36xx_get_survey(struct ieee80211_hw *hw, int idx,
1292 struct survey_info *survey)
1293 {
1294 struct wcn36xx *wcn = hw->priv;
1295 struct ieee80211_supported_band *sband;
1296 struct wcn36xx_chan_survey *chan_survey;
1297 int band_idx;
1298 unsigned long flags;
1299
1300 sband = wcn->hw->wiphy->bands[NL80211_BAND_2GHZ];
1301 band_idx = idx;
1302 if (band_idx >= sband->n_channels) {
1303 band_idx -= sband->n_channels;
1304 sband = wcn->hw->wiphy->bands[NL80211_BAND_5GHZ];
1305 }
1306
1307 if (!sband || band_idx >= sband->n_channels)
1308 return -ENOENT;
1309
1310 spin_lock_irqsave(&wcn->survey_lock, flags);
1311
1312 chan_survey = &wcn->chan_survey[idx];
1313 survey->channel = &sband->channels[band_idx];
1314 survey->noise = chan_survey->rssi - chan_survey->snr;
1315 survey->filled = 0;
1316
1317 if (chan_survey->rssi > -100 && chan_survey->rssi < 0)
1318 survey->filled |= SURVEY_INFO_NOISE_DBM;
1319
1320 if (survey->channel == wcn->channel)
1321 survey->filled |= SURVEY_INFO_IN_USE;
1322
1323 spin_unlock_irqrestore(&wcn->survey_lock, flags);
1324
1325 wcn36xx_dbg(WCN36XX_DBG_MAC,
1326 "ch %d rssi %d snr %d noise %d filled %x freq %d\n",
1327 HW_VALUE_CHANNEL(survey->channel->hw_value),
1328 chan_survey->rssi, chan_survey->snr, survey->noise,
1329 survey->filled, survey->channel->center_freq);
1330
1331 return 0;
1332 }
1333
wcn36xx_sta_statistics(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct station_info * sinfo)1334 static void wcn36xx_sta_statistics(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1335 struct ieee80211_sta *sta, struct station_info *sinfo)
1336 {
1337 struct wcn36xx *wcn;
1338 u8 sta_index;
1339 int status;
1340
1341 wcn = hw->priv;
1342 sta_index = get_sta_index(vif, wcn36xx_sta_to_priv(sta));
1343 status = wcn36xx_smd_get_stats(wcn, sta_index, HAL_GLOBAL_CLASS_A_STATS_INFO, sinfo);
1344
1345 if (status)
1346 wcn36xx_err("wcn36xx_smd_get_stats failed\n");
1347 }
1348
1349 static const struct ieee80211_ops wcn36xx_ops = {
1350 .start = wcn36xx_start,
1351 .stop = wcn36xx_stop,
1352 .add_interface = wcn36xx_add_interface,
1353 .remove_interface = wcn36xx_remove_interface,
1354 #ifdef CONFIG_PM
1355 .suspend = wcn36xx_suspend,
1356 .resume = wcn36xx_resume,
1357 .set_rekey_data = wcn36xx_set_rekey_data,
1358 #endif
1359 .config = wcn36xx_config,
1360 .prepare_multicast = wcn36xx_prepare_multicast,
1361 .configure_filter = wcn36xx_configure_filter,
1362 .tx = wcn36xx_tx,
1363 .wake_tx_queue = ieee80211_handle_wake_tx_queue,
1364 .set_key = wcn36xx_set_key,
1365 .hw_scan = wcn36xx_hw_scan,
1366 .cancel_hw_scan = wcn36xx_cancel_hw_scan,
1367 .sw_scan_start = wcn36xx_sw_scan_start,
1368 .sw_scan_complete = wcn36xx_sw_scan_complete,
1369 .bss_info_changed = wcn36xx_bss_info_changed,
1370 .set_rts_threshold = wcn36xx_set_rts_threshold,
1371 .sta_add = wcn36xx_sta_add,
1372 .sta_remove = wcn36xx_sta_remove,
1373 .sta_statistics = wcn36xx_sta_statistics,
1374 .ampdu_action = wcn36xx_ampdu_action,
1375 #if IS_ENABLED(CONFIG_IPV6)
1376 .ipv6_addr_change = wcn36xx_ipv6_addr_change,
1377 #endif
1378 .flush = wcn36xx_flush,
1379 .get_survey = wcn36xx_get_survey,
1380
1381 CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)
1382 };
1383
1384 static void
wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap * vht_cap)1385 wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap *vht_cap)
1386 {
1387 vht_cap->vht_supported = true;
1388
1389 vht_cap->cap = (IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 |
1390 IEEE80211_VHT_CAP_SHORT_GI_80 |
1391 IEEE80211_VHT_CAP_RXSTBC_1 |
1392 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
1393 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
1394 3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT |
1395 7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
1396
1397 vht_cap->vht_mcs.rx_mcs_map =
1398 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 |
1399 IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 |
1400 IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 |
1401 IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 |
1402 IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 |
1403 IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 |
1404 IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 |
1405 IEEE80211_VHT_MCS_NOT_SUPPORTED << 14);
1406
1407 vht_cap->vht_mcs.rx_highest = cpu_to_le16(433);
1408 vht_cap->vht_mcs.tx_highest = vht_cap->vht_mcs.rx_highest;
1409
1410 vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map;
1411 }
1412
wcn36xx_init_ieee80211(struct wcn36xx * wcn)1413 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
1414 {
1415 static const u32 cipher_suites[] = {
1416 WLAN_CIPHER_SUITE_WEP40,
1417 WLAN_CIPHER_SUITE_WEP104,
1418 WLAN_CIPHER_SUITE_TKIP,
1419 WLAN_CIPHER_SUITE_CCMP,
1420 };
1421
1422 ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
1423 ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
1424 ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
1425 ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
1426 ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
1427 ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
1428 ieee80211_hw_set(wcn->hw, REPORTS_TX_ACK_STATUS);
1429
1430 wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1431 BIT(NL80211_IFTYPE_AP) |
1432 BIT(NL80211_IFTYPE_ADHOC) |
1433 BIT(NL80211_IFTYPE_MESH_POINT);
1434
1435 wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
1436 if (wcn->rf_id != RF_IRIS_WCN3620)
1437 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
1438
1439 if (wcn->rf_id == RF_IRIS_WCN3680)
1440 wcn36xx_set_ieee80211_vht_caps(&wcn_band_5ghz.vht_cap);
1441
1442 wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
1443 wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
1444
1445 wcn->hw->wiphy->cipher_suites = cipher_suites;
1446 wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1447
1448 #ifdef CONFIG_PM
1449 wcn->hw->wiphy->wowlan = &wowlan_support;
1450 #endif
1451
1452 wcn->hw->max_listen_interval = 200;
1453
1454 wcn->hw->queues = 4;
1455
1456 SET_IEEE80211_DEV(wcn->hw, wcn->dev);
1457
1458 wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
1459 wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
1460
1461 wiphy_ext_feature_set(wcn->hw->wiphy,
1462 NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1463
1464 return 0;
1465 }
1466
wcn36xx_platform_get_resources(struct wcn36xx * wcn,struct platform_device * pdev)1467 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
1468 struct platform_device *pdev)
1469 {
1470 struct device_node *mmio_node;
1471 struct device_node *iris_node;
1472 int index;
1473 int ret;
1474
1475 /* Set TX IRQ */
1476 ret = platform_get_irq_byname(pdev, "tx");
1477 if (ret < 0)
1478 return ret;
1479 wcn->tx_irq = ret;
1480
1481 /* Set RX IRQ */
1482 ret = platform_get_irq_byname(pdev, "rx");
1483 if (ret < 0)
1484 return ret;
1485 wcn->rx_irq = ret;
1486
1487 /* Acquire SMSM tx enable handle */
1488 wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev,
1489 "tx-enable", &wcn->tx_enable_state_bit);
1490 if (IS_ERR(wcn->tx_enable_state)) {
1491 wcn36xx_err("failed to get tx-enable state\n");
1492 return PTR_ERR(wcn->tx_enable_state);
1493 }
1494
1495 /* Acquire SMSM tx rings empty handle */
1496 wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev,
1497 "tx-rings-empty", &wcn->tx_rings_empty_state_bit);
1498 if (IS_ERR(wcn->tx_rings_empty_state)) {
1499 wcn36xx_err("failed to get tx-rings-empty state\n");
1500 return PTR_ERR(wcn->tx_rings_empty_state);
1501 }
1502
1503 mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0);
1504 if (!mmio_node) {
1505 wcn36xx_err("failed to acquire qcom,mmio reference\n");
1506 return -EINVAL;
1507 }
1508
1509 wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto");
1510 wcn->is_pronto_v3 = !!of_device_is_compatible(mmio_node, "qcom,pronto-v3-pil");
1511
1512 /* Map the CCU memory */
1513 index = of_property_match_string(mmio_node, "reg-names", "ccu");
1514 wcn->ccu_base = of_iomap(mmio_node, index);
1515 if (!wcn->ccu_base) {
1516 wcn36xx_err("failed to map ccu memory\n");
1517 ret = -ENOMEM;
1518 goto put_mmio_node;
1519 }
1520
1521 /* Map the DXE memory */
1522 index = of_property_match_string(mmio_node, "reg-names", "dxe");
1523 wcn->dxe_base = of_iomap(mmio_node, index);
1524 if (!wcn->dxe_base) {
1525 wcn36xx_err("failed to map dxe memory\n");
1526 ret = -ENOMEM;
1527 goto unmap_ccu;
1528 }
1529
1530 /* External RF module */
1531 iris_node = of_get_child_by_name(mmio_node, "iris");
1532 if (iris_node) {
1533 if (of_device_is_compatible(iris_node, "qcom,wcn3620"))
1534 wcn->rf_id = RF_IRIS_WCN3620;
1535 if (of_device_is_compatible(iris_node, "qcom,wcn3660") ||
1536 of_device_is_compatible(iris_node, "qcom,wcn3660b"))
1537 wcn->rf_id = RF_IRIS_WCN3660;
1538 if (of_device_is_compatible(iris_node, "qcom,wcn3680"))
1539 wcn->rf_id = RF_IRIS_WCN3680;
1540 of_node_put(iris_node);
1541 }
1542
1543 of_node_put(mmio_node);
1544 return 0;
1545
1546 unmap_ccu:
1547 iounmap(wcn->ccu_base);
1548 put_mmio_node:
1549 of_node_put(mmio_node);
1550 return ret;
1551 }
1552
wcn36xx_probe(struct platform_device * pdev)1553 static int wcn36xx_probe(struct platform_device *pdev)
1554 {
1555 struct ieee80211_hw *hw;
1556 struct wcn36xx *wcn;
1557 void *wcnss;
1558 int ret;
1559 const u8 *addr;
1560 int n_channels;
1561
1562 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1563
1564 wcnss = dev_get_drvdata(pdev->dev.parent);
1565
1566 hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1567 if (!hw) {
1568 wcn36xx_err("failed to alloc hw\n");
1569 ret = -ENOMEM;
1570 goto out_err;
1571 }
1572 platform_set_drvdata(pdev, hw);
1573 wcn = hw->priv;
1574 wcn->hw = hw;
1575 wcn->dev = &pdev->dev;
1576 wcn->first_boot = true;
1577 mutex_init(&wcn->conf_mutex);
1578 mutex_init(&wcn->hal_mutex);
1579 mutex_init(&wcn->scan_lock);
1580 __skb_queue_head_init(&wcn->amsdu);
1581
1582 wcn->hal_buf = devm_kmalloc(wcn->dev, WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
1583 if (!wcn->hal_buf) {
1584 ret = -ENOMEM;
1585 goto out_wq;
1586 }
1587
1588 n_channels = wcn_band_2ghz.n_channels + wcn_band_5ghz.n_channels;
1589 wcn->chan_survey = devm_kmalloc(wcn->dev, n_channels, GFP_KERNEL);
1590 if (!wcn->chan_survey) {
1591 ret = -ENOMEM;
1592 goto out_wq;
1593 }
1594
1595 ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32));
1596 if (ret < 0) {
1597 wcn36xx_err("failed to set DMA mask: %d\n", ret);
1598 goto out_wq;
1599 }
1600
1601 wcn->nv_file = WLAN_NV_FILE;
1602 ret = of_property_read_string(wcn->dev->parent->of_node, "firmware-name", &wcn->nv_file);
1603 if (ret < 0 && ret != -EINVAL) {
1604 wcn36xx_err("failed to read \"firmware-name\" property: %d\n", ret);
1605 goto out_wq;
1606 }
1607
1608 wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
1609 if (IS_ERR(wcn->smd_channel)) {
1610 wcn36xx_err("failed to open WLAN_CTRL channel\n");
1611 ret = PTR_ERR(wcn->smd_channel);
1612 goto out_wq;
1613 }
1614
1615 addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret);
1616 if (addr && ret != ETH_ALEN) {
1617 wcn36xx_err("invalid local-mac-address\n");
1618 ret = -EINVAL;
1619 goto out_destroy_ept;
1620 } else if (addr) {
1621 wcn36xx_info("mac address: %pM\n", addr);
1622 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1623 }
1624
1625 ret = wcn36xx_platform_get_resources(wcn, pdev);
1626 if (ret)
1627 goto out_destroy_ept;
1628
1629 wcn36xx_init_ieee80211(wcn);
1630 ret = ieee80211_register_hw(wcn->hw);
1631 if (ret)
1632 goto out_unmap;
1633
1634 return 0;
1635
1636 out_unmap:
1637 iounmap(wcn->ccu_base);
1638 iounmap(wcn->dxe_base);
1639 out_destroy_ept:
1640 rpmsg_destroy_ept(wcn->smd_channel);
1641 out_wq:
1642 ieee80211_free_hw(hw);
1643 out_err:
1644 return ret;
1645 }
1646
wcn36xx_remove(struct platform_device * pdev)1647 static int wcn36xx_remove(struct platform_device *pdev)
1648 {
1649 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1650 struct wcn36xx *wcn = hw->priv;
1651 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1652
1653 release_firmware(wcn->nv);
1654
1655 ieee80211_unregister_hw(hw);
1656
1657 qcom_smem_state_put(wcn->tx_enable_state);
1658 qcom_smem_state_put(wcn->tx_rings_empty_state);
1659
1660 rpmsg_destroy_ept(wcn->smd_channel);
1661
1662 iounmap(wcn->dxe_base);
1663 iounmap(wcn->ccu_base);
1664
1665 __skb_queue_purge(&wcn->amsdu);
1666
1667 mutex_destroy(&wcn->hal_mutex);
1668 ieee80211_free_hw(hw);
1669
1670 return 0;
1671 }
1672
1673 static const struct of_device_id wcn36xx_of_match[] = {
1674 { .compatible = "qcom,wcnss-wlan" },
1675 {}
1676 };
1677 MODULE_DEVICE_TABLE(of, wcn36xx_of_match);
1678
1679 static struct platform_driver wcn36xx_driver = {
1680 .probe = wcn36xx_probe,
1681 .remove = wcn36xx_remove,
1682 .driver = {
1683 .name = "wcn36xx",
1684 .of_match_table = wcn36xx_of_match,
1685 },
1686 };
1687
1688 module_platform_driver(wcn36xx_driver);
1689
1690 MODULE_LICENSE("Dual BSD/GPL");
1691 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1692 MODULE_FIRMWARE(WLAN_NV_FILE);
1693