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_address.h>
23 #include <linux/of_device.h>
24 #include <linux/of_irq.h>
25 #include <linux/rpmsg.h>
26 #include <linux/soc/qcom/smem_state.h>
27 #include <linux/soc/qcom/wcnss_ctrl.h>
28 #include "wcn36xx.h"
29 #include "testmode.h"
30
31 unsigned int wcn36xx_dbg_mask;
32 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
33 MODULE_PARM_DESC(debug_mask, "Debugging mask");
34
35 #define CHAN2G(_freq, _idx) { \
36 .band = NL80211_BAND_2GHZ, \
37 .center_freq = (_freq), \
38 .hw_value = (_idx), \
39 .max_power = 25, \
40 }
41
42 #define CHAN5G(_freq, _idx, _phy_val) { \
43 .band = NL80211_BAND_5GHZ, \
44 .center_freq = (_freq), \
45 .hw_value = (_phy_val) << HW_VALUE_PHY_SHIFT | HW_VALUE_CHANNEL(_idx), \
46 .max_power = 25, \
47 }
48
49 /* The wcn firmware expects channel values to matching
50 * their mnemonic values. So use these for .hw_value. */
51 static struct ieee80211_channel wcn_2ghz_channels[] = {
52 CHAN2G(2412, 1), /* Channel 1 */
53 CHAN2G(2417, 2), /* Channel 2 */
54 CHAN2G(2422, 3), /* Channel 3 */
55 CHAN2G(2427, 4), /* Channel 4 */
56 CHAN2G(2432, 5), /* Channel 5 */
57 CHAN2G(2437, 6), /* Channel 6 */
58 CHAN2G(2442, 7), /* Channel 7 */
59 CHAN2G(2447, 8), /* Channel 8 */
60 CHAN2G(2452, 9), /* Channel 9 */
61 CHAN2G(2457, 10), /* Channel 10 */
62 CHAN2G(2462, 11), /* Channel 11 */
63 CHAN2G(2467, 12), /* Channel 12 */
64 CHAN2G(2472, 13), /* Channel 13 */
65 CHAN2G(2484, 14) /* Channel 14 */
66
67 };
68
69 static struct ieee80211_channel wcn_5ghz_channels[] = {
70 CHAN5G(5180, 36, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
71 CHAN5G(5200, 40, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
72 CHAN5G(5220, 44, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
73 CHAN5G(5240, 48, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
74 CHAN5G(5260, 52, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
75 CHAN5G(5280, 56, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
76 CHAN5G(5300, 60, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
77 CHAN5G(5320, 64, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
78 CHAN5G(5500, 100, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
79 CHAN5G(5520, 104, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
80 CHAN5G(5540, 108, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
81 CHAN5G(5560, 112, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
82 CHAN5G(5580, 116, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
83 CHAN5G(5600, 120, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
84 CHAN5G(5620, 124, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
85 CHAN5G(5640, 128, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
86 CHAN5G(5660, 132, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
87 CHAN5G(5700, 140, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
88 CHAN5G(5745, 149, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
89 CHAN5G(5765, 153, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
90 CHAN5G(5785, 157, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
91 CHAN5G(5805, 161, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
92 CHAN5G(5825, 165, 0)
93 };
94
95 #define RATE(_bitrate, _hw_rate, _flags) { \
96 .bitrate = (_bitrate), \
97 .flags = (_flags), \
98 .hw_value = (_hw_rate), \
99 .hw_value_short = (_hw_rate) \
100 }
101
102 static struct ieee80211_rate wcn_2ghz_rates[] = {
103 RATE(10, HW_RATE_INDEX_1MBPS, 0),
104 RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
105 RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
106 RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
107 RATE(60, HW_RATE_INDEX_6MBPS, 0),
108 RATE(90, HW_RATE_INDEX_9MBPS, 0),
109 RATE(120, HW_RATE_INDEX_12MBPS, 0),
110 RATE(180, HW_RATE_INDEX_18MBPS, 0),
111 RATE(240, HW_RATE_INDEX_24MBPS, 0),
112 RATE(360, HW_RATE_INDEX_36MBPS, 0),
113 RATE(480, HW_RATE_INDEX_48MBPS, 0),
114 RATE(540, HW_RATE_INDEX_54MBPS, 0)
115 };
116
117 static struct ieee80211_rate wcn_5ghz_rates[] = {
118 RATE(60, HW_RATE_INDEX_6MBPS, 0),
119 RATE(90, HW_RATE_INDEX_9MBPS, 0),
120 RATE(120, HW_RATE_INDEX_12MBPS, 0),
121 RATE(180, HW_RATE_INDEX_18MBPS, 0),
122 RATE(240, HW_RATE_INDEX_24MBPS, 0),
123 RATE(360, HW_RATE_INDEX_36MBPS, 0),
124 RATE(480, HW_RATE_INDEX_48MBPS, 0),
125 RATE(540, HW_RATE_INDEX_54MBPS, 0)
126 };
127
128 static struct ieee80211_supported_band wcn_band_2ghz = {
129 .channels = wcn_2ghz_channels,
130 .n_channels = ARRAY_SIZE(wcn_2ghz_channels),
131 .bitrates = wcn_2ghz_rates,
132 .n_bitrates = ARRAY_SIZE(wcn_2ghz_rates),
133 .ht_cap = {
134 .cap = IEEE80211_HT_CAP_GRN_FLD |
135 IEEE80211_HT_CAP_SGI_20 |
136 IEEE80211_HT_CAP_DSSSCCK40 |
137 IEEE80211_HT_CAP_LSIG_TXOP_PROT,
138 .ht_supported = true,
139 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
140 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
141 .mcs = {
142 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
143 .rx_highest = cpu_to_le16(72),
144 .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
145 }
146 }
147 };
148
149 static struct ieee80211_supported_band wcn_band_5ghz = {
150 .channels = wcn_5ghz_channels,
151 .n_channels = ARRAY_SIZE(wcn_5ghz_channels),
152 .bitrates = wcn_5ghz_rates,
153 .n_bitrates = ARRAY_SIZE(wcn_5ghz_rates),
154 .ht_cap = {
155 .cap = IEEE80211_HT_CAP_GRN_FLD |
156 IEEE80211_HT_CAP_SGI_20 |
157 IEEE80211_HT_CAP_DSSSCCK40 |
158 IEEE80211_HT_CAP_LSIG_TXOP_PROT |
159 IEEE80211_HT_CAP_SGI_40 |
160 IEEE80211_HT_CAP_SUP_WIDTH_20_40,
161 .ht_supported = true,
162 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
163 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
164 .mcs = {
165 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
166 .rx_highest = cpu_to_le16(150),
167 .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
168 }
169 }
170 };
171
172 #ifdef CONFIG_PM
173
174 static const struct wiphy_wowlan_support wowlan_support = {
175 .flags = WIPHY_WOWLAN_ANY
176 };
177
178 #endif
179
get_sta_index(struct ieee80211_vif * vif,struct wcn36xx_sta * sta_priv)180 static inline u8 get_sta_index(struct ieee80211_vif *vif,
181 struct wcn36xx_sta *sta_priv)
182 {
183 return NL80211_IFTYPE_STATION == vif->type ?
184 sta_priv->bss_sta_index :
185 sta_priv->sta_index;
186 }
187
188 static const char * const wcn36xx_caps_names[] = {
189 "MCC", /* 0 */
190 "P2P", /* 1 */
191 "DOT11AC", /* 2 */
192 "SLM_SESSIONIZATION", /* 3 */
193 "DOT11AC_OPMODE", /* 4 */
194 "SAP32STA", /* 5 */
195 "TDLS", /* 6 */
196 "P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */
197 "WLANACTIVE_OFFLOAD", /* 8 */
198 "BEACON_OFFLOAD", /* 9 */
199 "SCAN_OFFLOAD", /* 10 */
200 "ROAM_OFFLOAD", /* 11 */
201 "BCN_MISS_OFFLOAD", /* 12 */
202 "STA_POWERSAVE", /* 13 */
203 "STA_ADVANCED_PWRSAVE", /* 14 */
204 "AP_UAPSD", /* 15 */
205 "AP_DFS", /* 16 */
206 "BLOCKACK", /* 17 */
207 "PHY_ERR", /* 18 */
208 "BCN_FILTER", /* 19 */
209 "RTT", /* 20 */
210 "RATECTRL", /* 21 */
211 "WOW", /* 22 */
212 "WLAN_ROAM_SCAN_OFFLOAD", /* 23 */
213 "SPECULATIVE_PS_POLL", /* 24 */
214 "SCAN_SCH", /* 25 */
215 "IBSS_HEARTBEAT_OFFLOAD", /* 26 */
216 "WLAN_SCAN_OFFLOAD", /* 27 */
217 "WLAN_PERIODIC_TX_PTRN", /* 28 */
218 "ADVANCE_TDLS", /* 29 */
219 "BATCH_SCAN", /* 30 */
220 "FW_IN_TX_PATH", /* 31 */
221 "EXTENDED_NSOFFLOAD_SLOT", /* 32 */
222 "CH_SWITCH_V1", /* 33 */
223 "HT40_OBSS_SCAN", /* 34 */
224 "UPDATE_CHANNEL_LIST", /* 35 */
225 "WLAN_MCADDR_FLT", /* 36 */
226 "WLAN_CH144", /* 37 */
227 "NAN", /* 38 */
228 "TDLS_SCAN_COEXISTENCE", /* 39 */
229 "LINK_LAYER_STATS_MEAS", /* 40 */
230 "MU_MIMO", /* 41 */
231 "EXTENDED_SCAN", /* 42 */
232 "DYNAMIC_WMM_PS", /* 43 */
233 "MAC_SPOOFED_SCAN", /* 44 */
234 "BMU_ERROR_GENERIC_RECOVERY", /* 45 */
235 "DISA", /* 46 */
236 "FW_STATS", /* 47 */
237 "WPS_PRBRSP_TMPL", /* 48 */
238 "BCN_IE_FLT_DELTA", /* 49 */
239 "TDLS_OFF_CHANNEL", /* 51 */
240 "RTT3", /* 52 */
241 "MGMT_FRAME_LOGGING", /* 53 */
242 "ENHANCED_TXBD_COMPLETION", /* 54 */
243 "LOGGING_ENHANCEMENT", /* 55 */
244 "EXT_SCAN_ENHANCED", /* 56 */
245 "MEMORY_DUMP_SUPPORTED", /* 57 */
246 "PER_PKT_STATS_SUPPORTED", /* 58 */
247 "EXT_LL_STAT", /* 60 */
248 "WIFI_CONFIG", /* 61 */
249 "ANTENNA_DIVERSITY_SELECTION", /* 62 */
250 };
251
wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)252 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)
253 {
254 if (x >= ARRAY_SIZE(wcn36xx_caps_names))
255 return "UNKNOWN";
256 return wcn36xx_caps_names[x];
257 }
258
wcn36xx_feat_caps_info(struct wcn36xx * wcn)259 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
260 {
261 int i;
262
263 for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
264 if (get_feat_caps(wcn->fw_feat_caps, i))
265 wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n", wcn36xx_get_cap_name(i));
266 }
267 }
268
wcn36xx_start(struct ieee80211_hw * hw)269 static int wcn36xx_start(struct ieee80211_hw *hw)
270 {
271 struct wcn36xx *wcn = hw->priv;
272 int ret;
273
274 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
275
276 /* SMD initialization */
277 ret = wcn36xx_smd_open(wcn);
278 if (ret) {
279 wcn36xx_err("Failed to open smd channel: %d\n", ret);
280 goto out_err;
281 }
282
283 /* Allocate memory pools for Mgmt BD headers and Data BD headers */
284 ret = wcn36xx_dxe_allocate_mem_pools(wcn);
285 if (ret) {
286 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
287 goto out_smd_close;
288 }
289
290 ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
291 if (ret) {
292 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
293 goto out_free_dxe_pool;
294 }
295
296 wcn->hal_buf = kmalloc(WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
297 if (!wcn->hal_buf) {
298 wcn36xx_err("Failed to allocate smd buf\n");
299 ret = -ENOMEM;
300 goto out_free_dxe_ctl;
301 }
302
303 ret = wcn36xx_smd_load_nv(wcn);
304 if (ret) {
305 wcn36xx_err("Failed to push NV to chip\n");
306 goto out_free_smd_buf;
307 }
308
309 ret = wcn36xx_smd_start(wcn);
310 if (ret) {
311 wcn36xx_err("Failed to start chip\n");
312 goto out_free_smd_buf;
313 }
314
315 if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
316 ret = wcn36xx_smd_feature_caps_exchange(wcn);
317 if (ret)
318 wcn36xx_warn("Exchange feature caps failed\n");
319 else
320 wcn36xx_feat_caps_info(wcn);
321 }
322
323 /* DMA channel initialization */
324 ret = wcn36xx_dxe_init(wcn);
325 if (ret) {
326 wcn36xx_err("DXE init failed\n");
327 goto out_smd_stop;
328 }
329
330 wcn36xx_debugfs_init(wcn);
331
332 INIT_LIST_HEAD(&wcn->vif_list);
333 spin_lock_init(&wcn->dxe_lock);
334
335 return 0;
336
337 out_smd_stop:
338 wcn36xx_smd_stop(wcn);
339 out_free_smd_buf:
340 kfree(wcn->hal_buf);
341 out_free_dxe_ctl:
342 wcn36xx_dxe_free_ctl_blks(wcn);
343 out_free_dxe_pool:
344 wcn36xx_dxe_free_mem_pools(wcn);
345 out_smd_close:
346 wcn36xx_smd_close(wcn);
347 out_err:
348 return ret;
349 }
350
wcn36xx_stop(struct ieee80211_hw * hw)351 static void wcn36xx_stop(struct ieee80211_hw *hw)
352 {
353 struct wcn36xx *wcn = hw->priv;
354
355 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
356
357 mutex_lock(&wcn->scan_lock);
358 if (wcn->scan_req) {
359 struct cfg80211_scan_info scan_info = {
360 .aborted = true,
361 };
362
363 ieee80211_scan_completed(wcn->hw, &scan_info);
364 }
365 wcn->scan_req = NULL;
366 mutex_unlock(&wcn->scan_lock);
367
368 wcn36xx_debugfs_exit(wcn);
369 wcn36xx_smd_stop(wcn);
370 wcn36xx_dxe_deinit(wcn);
371 wcn36xx_smd_close(wcn);
372
373 wcn36xx_dxe_free_mem_pools(wcn);
374 wcn36xx_dxe_free_ctl_blks(wcn);
375
376 kfree(wcn->hal_buf);
377 }
378
wcn36xx_change_ps(struct wcn36xx * wcn,bool enable)379 static void wcn36xx_change_ps(struct wcn36xx *wcn, bool enable)
380 {
381 struct ieee80211_vif *vif = NULL;
382 struct wcn36xx_vif *tmp;
383
384 list_for_each_entry(tmp, &wcn->vif_list, list) {
385 vif = wcn36xx_priv_to_vif(tmp);
386 if (enable && !wcn->sw_scan) {
387 if (vif->bss_conf.ps) /* ps allowed ? */
388 wcn36xx_pmc_enter_bmps_state(wcn, vif);
389 } else {
390 wcn36xx_pmc_exit_bmps_state(wcn, vif);
391 }
392 }
393 }
394
wcn36xx_change_opchannel(struct wcn36xx * wcn,int ch)395 static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch)
396 {
397 struct ieee80211_vif *vif = NULL;
398 struct wcn36xx_vif *tmp;
399
400 list_for_each_entry(tmp, &wcn->vif_list, list) {
401 vif = wcn36xx_priv_to_vif(tmp);
402 wcn36xx_smd_switch_channel(wcn, vif, ch);
403 }
404 }
405
wcn36xx_config(struct ieee80211_hw * hw,u32 changed)406 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
407 {
408 struct wcn36xx *wcn = hw->priv;
409
410 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
411
412 mutex_lock(&wcn->conf_mutex);
413
414 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
415 int ch = WCN36XX_HW_CHANNEL(wcn);
416 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
417 ch);
418
419 if (wcn->sw_scan_opchannel == ch) {
420 /* If channel is the initial operating channel, we may
421 * want to receive/transmit regular data packets, then
422 * simply stop the scan session and exit PS mode.
423 */
424 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
425 wcn->sw_scan_vif);
426 } else if (wcn->sw_scan) {
427 /* A scan is ongoing, do not change the operating
428 * channel, but start a scan session on the channel.
429 */
430 wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN,
431 wcn->sw_scan_vif);
432 wcn36xx_smd_start_scan(wcn, ch);
433 } else {
434 wcn36xx_change_opchannel(wcn, ch);
435 }
436 }
437
438 if (changed & IEEE80211_CONF_CHANGE_PS)
439 wcn36xx_change_ps(wcn, hw->conf.flags & IEEE80211_CONF_PS);
440
441 mutex_unlock(&wcn->conf_mutex);
442
443 return 0;
444 }
445
wcn36xx_configure_filter(struct ieee80211_hw * hw,unsigned int changed,unsigned int * total,u64 multicast)446 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
447 unsigned int changed,
448 unsigned int *total, u64 multicast)
449 {
450 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
451 struct wcn36xx *wcn = hw->priv;
452 struct wcn36xx_vif *tmp;
453 struct ieee80211_vif *vif = NULL;
454
455 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
456
457 mutex_lock(&wcn->conf_mutex);
458
459 *total &= FIF_ALLMULTI;
460
461 fp = (void *)(unsigned long)multicast;
462 list_for_each_entry(tmp, &wcn->vif_list, list) {
463 vif = wcn36xx_priv_to_vif(tmp);
464
465 /* FW handles MC filtering only when connected as STA */
466 if (*total & FIF_ALLMULTI)
467 wcn36xx_smd_set_mc_list(wcn, vif, NULL);
468 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc)
469 wcn36xx_smd_set_mc_list(wcn, vif, fp);
470 }
471
472 mutex_unlock(&wcn->conf_mutex);
473 kfree(fp);
474 }
475
wcn36xx_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)476 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw,
477 struct netdev_hw_addr_list *mc_list)
478 {
479 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
480 struct netdev_hw_addr *ha;
481
482 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n");
483 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
484 if (!fp) {
485 wcn36xx_err("Out of memory setting filters.\n");
486 return 0;
487 }
488
489 fp->mc_addr_count = 0;
490 /* update multicast filtering parameters */
491 if (netdev_hw_addr_list_count(mc_list) <=
492 WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) {
493 netdev_hw_addr_list_for_each(ha, mc_list) {
494 memcpy(fp->mc_addr[fp->mc_addr_count],
495 ha->addr, ETH_ALEN);
496 fp->mc_addr_count++;
497 }
498 }
499
500 return (u64)(unsigned long)fp;
501 }
502
wcn36xx_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)503 static void wcn36xx_tx(struct ieee80211_hw *hw,
504 struct ieee80211_tx_control *control,
505 struct sk_buff *skb)
506 {
507 struct wcn36xx *wcn = hw->priv;
508 struct wcn36xx_sta *sta_priv = NULL;
509
510 if (control->sta)
511 sta_priv = wcn36xx_sta_to_priv(control->sta);
512
513 if (wcn36xx_start_tx(wcn, sta_priv, skb))
514 ieee80211_free_txskb(wcn->hw, skb);
515 }
516
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)517 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
518 struct ieee80211_vif *vif,
519 struct ieee80211_sta *sta,
520 struct ieee80211_key_conf *key_conf)
521 {
522 struct wcn36xx *wcn = hw->priv;
523 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
524 struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL;
525 int ret = 0;
526 u8 key[WLAN_MAX_KEY_LEN];
527
528 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
529 wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
530 cmd, key_conf->cipher, key_conf->keyidx,
531 key_conf->keylen, key_conf->flags);
532 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
533 key_conf->key,
534 key_conf->keylen);
535
536 mutex_lock(&wcn->conf_mutex);
537
538 switch (key_conf->cipher) {
539 case WLAN_CIPHER_SUITE_WEP40:
540 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
541 break;
542 case WLAN_CIPHER_SUITE_WEP104:
543 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104;
544 break;
545 case WLAN_CIPHER_SUITE_CCMP:
546 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
547 break;
548 case WLAN_CIPHER_SUITE_TKIP:
549 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
550 break;
551 default:
552 wcn36xx_err("Unsupported key type 0x%x\n",
553 key_conf->cipher);
554 ret = -EOPNOTSUPP;
555 goto out;
556 }
557
558 switch (cmd) {
559 case SET_KEY:
560 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
561 /*
562 * Supplicant is sending key in the wrong order:
563 * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
564 * but HW expects it to be in the order as described in
565 * IEEE 802.11 spec (see chapter 11.7) like this:
566 * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
567 */
568 memcpy(key, key_conf->key, 16);
569 memcpy(key + 16, key_conf->key + 24, 8);
570 memcpy(key + 24, key_conf->key + 16, 8);
571 } else {
572 memcpy(key, key_conf->key, key_conf->keylen);
573 }
574
575 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
576 sta_priv->is_data_encrypted = true;
577 /* Reconfigure bss with encrypt_type */
578 if (NL80211_IFTYPE_STATION == vif->type)
579 wcn36xx_smd_config_bss(wcn,
580 vif,
581 sta,
582 sta->addr,
583 true);
584
585 wcn36xx_smd_set_stakey(wcn,
586 vif_priv->encrypt_type,
587 key_conf->keyidx,
588 key_conf->keylen,
589 key,
590 get_sta_index(vif, sta_priv));
591 } else {
592 wcn36xx_smd_set_bsskey(wcn,
593 vif_priv->encrypt_type,
594 vif_priv->bss_index,
595 key_conf->keyidx,
596 key_conf->keylen,
597 key);
598
599 if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
600 (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
601 list_for_each_entry(sta_priv,
602 &vif_priv->sta_list, list) {
603 sta_priv->is_data_encrypted = true;
604 wcn36xx_smd_set_stakey(wcn,
605 vif_priv->encrypt_type,
606 key_conf->keyidx,
607 key_conf->keylen,
608 key,
609 get_sta_index(vif, sta_priv));
610 }
611 }
612 }
613 /* FIXME: Only enable bmps support when encryption is enabled.
614 * For any reasons, when connected to open/no-security BSS,
615 * the wcn36xx controller in bmps mode does not forward
616 * 'wake-up' beacons despite AP sends DTIM with station AID.
617 * It could be due to a firmware issue or to the way driver
618 * configure the station.
619 */
620 if (vif->type == NL80211_IFTYPE_STATION)
621 vif_priv->allow_bmps = true;
622 break;
623 case DISABLE_KEY:
624 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
625 if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX)
626 wcn36xx_smd_remove_bsskey(wcn,
627 vif_priv->encrypt_type,
628 vif_priv->bss_index,
629 key_conf->keyidx);
630
631 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
632 } else {
633 sta_priv->is_data_encrypted = false;
634 /* do not remove key if disassociated */
635 if (sta_priv->aid)
636 wcn36xx_smd_remove_stakey(wcn,
637 vif_priv->encrypt_type,
638 key_conf->keyidx,
639 get_sta_index(vif, sta_priv));
640 }
641 break;
642 default:
643 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
644 ret = -EOPNOTSUPP;
645 goto out;
646 }
647
648 out:
649 mutex_unlock(&wcn->conf_mutex);
650
651 return ret;
652 }
653
wcn36xx_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)654 static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
655 struct ieee80211_vif *vif,
656 struct ieee80211_scan_request *hw_req)
657 {
658 struct wcn36xx *wcn = hw->priv;
659 int i;
660
661 if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
662 /* fallback to mac80211 software scan */
663 return 1;
664 }
665
666 /* For unknown reason, the hardware offloaded scan only works with
667 * 2.4Ghz channels, fallback to software scan in other cases.
668 */
669 for (i = 0; i < hw_req->req.n_channels; i++) {
670 if (hw_req->req.channels[i]->band != NL80211_BAND_2GHZ)
671 return 1;
672 }
673
674 mutex_lock(&wcn->scan_lock);
675 if (wcn->scan_req) {
676 mutex_unlock(&wcn->scan_lock);
677 return -EBUSY;
678 }
679
680 wcn->scan_aborted = false;
681 wcn->scan_req = &hw_req->req;
682
683 mutex_unlock(&wcn->scan_lock);
684
685 return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req);
686 }
687
wcn36xx_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)688 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
689 struct ieee80211_vif *vif)
690 {
691 struct wcn36xx *wcn = hw->priv;
692
693 mutex_lock(&wcn->scan_lock);
694 wcn->scan_aborted = true;
695 mutex_unlock(&wcn->scan_lock);
696
697 if (get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
698 /* ieee80211_scan_completed will be called on FW scan
699 * indication */
700 wcn36xx_smd_stop_hw_scan(wcn);
701 }
702 }
703
wcn36xx_sw_scan_start(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const u8 * mac_addr)704 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
705 struct ieee80211_vif *vif,
706 const u8 *mac_addr)
707 {
708 struct wcn36xx *wcn = hw->priv;
709 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
710
711 wcn->sw_scan = true;
712 wcn->sw_scan_vif = vif;
713 if (vif_priv->sta_assoc)
714 wcn->sw_scan_opchannel = WCN36XX_HW_CHANNEL(wcn);
715 else
716 wcn->sw_scan_opchannel = 0;
717 }
718
wcn36xx_sw_scan_complete(struct ieee80211_hw * hw,struct ieee80211_vif * vif)719 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
720 struct ieee80211_vif *vif)
721 {
722 struct wcn36xx *wcn = hw->priv;
723
724 /* ensure that any scan session is finished */
725 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN, wcn->sw_scan_vif);
726 wcn->sw_scan = false;
727 wcn->sw_scan_opchannel = 0;
728 }
729
wcn36xx_update_allowed_rates(struct ieee80211_sta * sta,enum nl80211_band band)730 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
731 enum nl80211_band band)
732 {
733 int i, size;
734 u16 *rates_table;
735 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
736 u32 rates = sta->supp_rates[band];
737
738 memset(&sta_priv->supported_rates, 0,
739 sizeof(sta_priv->supported_rates));
740 sta_priv->supported_rates.op_rate_mode = STA_11n;
741
742 size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
743 rates_table = sta_priv->supported_rates.dsss_rates;
744 if (band == NL80211_BAND_2GHZ) {
745 for (i = 0; i < size; i++) {
746 if (rates & 0x01) {
747 rates_table[i] = wcn_2ghz_rates[i].hw_value;
748 rates = rates >> 1;
749 }
750 }
751 }
752
753 size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
754 rates_table = sta_priv->supported_rates.ofdm_rates;
755 for (i = 0; i < size; i++) {
756 if (rates & 0x01) {
757 rates_table[i] = wcn_5ghz_rates[i].hw_value;
758 rates = rates >> 1;
759 }
760 }
761
762 if (sta->ht_cap.ht_supported) {
763 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
764 sizeof(sta_priv->supported_rates.supported_mcs_set));
765 memcpy(sta_priv->supported_rates.supported_mcs_set,
766 sta->ht_cap.mcs.rx_mask,
767 sizeof(sta->ht_cap.mcs.rx_mask));
768 }
769
770 if (sta->vht_cap.vht_supported) {
771 sta_priv->supported_rates.op_rate_mode = STA_11ac;
772 sta_priv->supported_rates.vht_rx_mcs_map =
773 sta->vht_cap.vht_mcs.rx_mcs_map;
774 sta_priv->supported_rates.vht_tx_mcs_map =
775 sta->vht_cap.vht_mcs.tx_mcs_map;
776 }
777 }
778
wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates * rates)779 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
780 {
781 u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
782 HW_RATE_INDEX_6MBPS,
783 HW_RATE_INDEX_9MBPS,
784 HW_RATE_INDEX_12MBPS,
785 HW_RATE_INDEX_18MBPS,
786 HW_RATE_INDEX_24MBPS,
787 HW_RATE_INDEX_36MBPS,
788 HW_RATE_INDEX_48MBPS,
789 HW_RATE_INDEX_54MBPS
790 };
791 u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
792 HW_RATE_INDEX_1MBPS,
793 HW_RATE_INDEX_2MBPS,
794 HW_RATE_INDEX_5_5MBPS,
795 HW_RATE_INDEX_11MBPS
796 };
797
798 rates->op_rate_mode = STA_11n;
799 memcpy(rates->dsss_rates, dsss_rates,
800 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
801 memcpy(rates->ofdm_rates, ofdm_rates,
802 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
803 rates->supported_mcs_set[0] = 0xFF;
804 }
805
wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 * rates)806 void wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 *rates)
807 {
808 rates->op_rate_mode = STA_11ac;
809 rates->vht_rx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
810 rates->vht_tx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
811 }
812
wcn36xx_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u32 changed)813 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
814 struct ieee80211_vif *vif,
815 struct ieee80211_bss_conf *bss_conf,
816 u32 changed)
817 {
818 struct wcn36xx *wcn = hw->priv;
819 struct sk_buff *skb = NULL;
820 u16 tim_off, tim_len;
821 enum wcn36xx_hal_link_state link_state;
822 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
823
824 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
825 vif, changed);
826
827 mutex_lock(&wcn->conf_mutex);
828
829 if (changed & BSS_CHANGED_BEACON_INFO) {
830 wcn36xx_dbg(WCN36XX_DBG_MAC,
831 "mac bss changed dtim period %d\n",
832 bss_conf->dtim_period);
833
834 vif_priv->dtim_period = bss_conf->dtim_period;
835 }
836
837 if (changed & BSS_CHANGED_BSSID) {
838 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
839 bss_conf->bssid);
840
841 if (!is_zero_ether_addr(bss_conf->bssid)) {
842 vif_priv->is_joining = true;
843 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
844 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
845 WCN36XX_HAL_LINK_PREASSOC_STATE);
846 wcn36xx_smd_join(wcn, bss_conf->bssid,
847 vif->addr, WCN36XX_HW_CHANNEL(wcn));
848 wcn36xx_smd_config_bss(wcn, vif, NULL,
849 bss_conf->bssid, false);
850 } else {
851 vif_priv->is_joining = false;
852 wcn36xx_smd_delete_bss(wcn, vif);
853 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
854 WCN36XX_HAL_LINK_IDLE_STATE);
855 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
856 }
857 }
858
859 if (changed & BSS_CHANGED_SSID) {
860 wcn36xx_dbg(WCN36XX_DBG_MAC,
861 "mac bss changed ssid\n");
862 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
863 bss_conf->ssid, bss_conf->ssid_len);
864
865 vif_priv->ssid.length = bss_conf->ssid_len;
866 memcpy(&vif_priv->ssid.ssid,
867 bss_conf->ssid,
868 bss_conf->ssid_len);
869 }
870
871 if (changed & BSS_CHANGED_ASSOC) {
872 vif_priv->is_joining = false;
873 if (bss_conf->assoc) {
874 struct ieee80211_sta *sta;
875 struct wcn36xx_sta *sta_priv;
876
877 wcn36xx_dbg(WCN36XX_DBG_MAC,
878 "mac assoc bss %pM vif %pM AID=%d\n",
879 bss_conf->bssid,
880 vif->addr,
881 bss_conf->aid);
882
883 vif_priv->sta_assoc = true;
884
885 /*
886 * Holding conf_mutex ensures mutal exclusion with
887 * wcn36xx_sta_remove() and as such ensures that sta
888 * won't be freed while we're operating on it. As such
889 * we do not need to hold the rcu_read_lock().
890 */
891 sta = ieee80211_find_sta(vif, bss_conf->bssid);
892 if (!sta) {
893 wcn36xx_err("sta %pM is not found\n",
894 bss_conf->bssid);
895 goto out;
896 }
897 sta_priv = wcn36xx_sta_to_priv(sta);
898
899 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
900
901 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
902 vif->addr,
903 WCN36XX_HAL_LINK_POSTASSOC_STATE);
904 wcn36xx_smd_config_bss(wcn, vif, sta,
905 bss_conf->bssid,
906 true);
907 sta_priv->aid = bss_conf->aid;
908 /*
909 * config_sta must be called from because this is the
910 * place where AID is available.
911 */
912 wcn36xx_smd_config_sta(wcn, vif, sta);
913 } else {
914 wcn36xx_dbg(WCN36XX_DBG_MAC,
915 "disassociated bss %pM vif %pM AID=%d\n",
916 bss_conf->bssid,
917 vif->addr,
918 bss_conf->aid);
919 vif_priv->sta_assoc = false;
920 vif_priv->allow_bmps = false;
921 wcn36xx_smd_set_link_st(wcn,
922 bss_conf->bssid,
923 vif->addr,
924 WCN36XX_HAL_LINK_IDLE_STATE);
925 }
926 }
927
928 if (changed & BSS_CHANGED_AP_PROBE_RESP) {
929 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
930 skb = ieee80211_proberesp_get(hw, vif);
931 if (!skb) {
932 wcn36xx_err("failed to alloc probereq skb\n");
933 goto out;
934 }
935
936 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
937 dev_kfree_skb(skb);
938 }
939
940 if (changed & BSS_CHANGED_BEACON_ENABLED ||
941 changed & BSS_CHANGED_BEACON) {
942 wcn36xx_dbg(WCN36XX_DBG_MAC,
943 "mac bss changed beacon enabled %d\n",
944 bss_conf->enable_beacon);
945
946 if (bss_conf->enable_beacon) {
947 vif_priv->dtim_period = bss_conf->dtim_period;
948 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
949 wcn36xx_smd_config_bss(wcn, vif, NULL,
950 vif->addr, false);
951 skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
952 &tim_len);
953 if (!skb) {
954 wcn36xx_err("failed to alloc beacon skb\n");
955 goto out;
956 }
957 wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
958 dev_kfree_skb(skb);
959
960 if (vif->type == NL80211_IFTYPE_ADHOC ||
961 vif->type == NL80211_IFTYPE_MESH_POINT)
962 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
963 else
964 link_state = WCN36XX_HAL_LINK_AP_STATE;
965
966 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
967 link_state);
968 } else {
969 wcn36xx_smd_delete_bss(wcn, vif);
970 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
971 WCN36XX_HAL_LINK_IDLE_STATE);
972 }
973 }
974 out:
975
976 mutex_unlock(&wcn->conf_mutex);
977 }
978
979 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
wcn36xx_set_rts_threshold(struct ieee80211_hw * hw,u32 value)980 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
981 {
982 struct wcn36xx *wcn = hw->priv;
983 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
984
985 mutex_lock(&wcn->conf_mutex);
986 wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
987 mutex_unlock(&wcn->conf_mutex);
988
989 return 0;
990 }
991
wcn36xx_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)992 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
993 struct ieee80211_vif *vif)
994 {
995 struct wcn36xx *wcn = hw->priv;
996 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
997 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
998
999 mutex_lock(&wcn->conf_mutex);
1000
1001 list_del(&vif_priv->list);
1002 wcn36xx_smd_delete_sta_self(wcn, vif->addr);
1003
1004 mutex_unlock(&wcn->conf_mutex);
1005 }
1006
wcn36xx_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1007 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
1008 struct ieee80211_vif *vif)
1009 {
1010 struct wcn36xx *wcn = hw->priv;
1011 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1012
1013 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
1014 vif, vif->type);
1015
1016 if (!(NL80211_IFTYPE_STATION == vif->type ||
1017 NL80211_IFTYPE_AP == vif->type ||
1018 NL80211_IFTYPE_ADHOC == vif->type ||
1019 NL80211_IFTYPE_MESH_POINT == vif->type)) {
1020 wcn36xx_warn("Unsupported interface type requested: %d\n",
1021 vif->type);
1022 return -EOPNOTSUPP;
1023 }
1024
1025 mutex_lock(&wcn->conf_mutex);
1026
1027 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
1028 INIT_LIST_HEAD(&vif_priv->sta_list);
1029 list_add(&vif_priv->list, &wcn->vif_list);
1030 wcn36xx_smd_add_sta_self(wcn, vif);
1031
1032 mutex_unlock(&wcn->conf_mutex);
1033
1034 return 0;
1035 }
1036
wcn36xx_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1037 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1038 struct ieee80211_sta *sta)
1039 {
1040 struct wcn36xx *wcn = hw->priv;
1041 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1042 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1043 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
1044 vif, sta->addr);
1045
1046 mutex_lock(&wcn->conf_mutex);
1047
1048 spin_lock_init(&sta_priv->ampdu_lock);
1049 sta_priv->vif = vif_priv;
1050 list_add(&sta_priv->list, &vif_priv->sta_list);
1051
1052 /*
1053 * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
1054 * at this stage AID is not available yet.
1055 */
1056 if (NL80211_IFTYPE_STATION != vif->type) {
1057 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
1058 sta_priv->aid = sta->aid;
1059 wcn36xx_smd_config_sta(wcn, vif, sta);
1060 }
1061
1062 mutex_unlock(&wcn->conf_mutex);
1063
1064 return 0;
1065 }
1066
wcn36xx_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1067 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
1068 struct ieee80211_vif *vif,
1069 struct ieee80211_sta *sta)
1070 {
1071 struct wcn36xx *wcn = hw->priv;
1072 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1073
1074 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
1075 vif, sta->addr, sta_priv->sta_index);
1076
1077 mutex_lock(&wcn->conf_mutex);
1078
1079 list_del(&sta_priv->list);
1080 wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
1081 sta_priv->vif = NULL;
1082
1083 mutex_unlock(&wcn->conf_mutex);
1084
1085 return 0;
1086 }
1087
1088 #ifdef CONFIG_PM
1089
wcn36xx_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wow)1090 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
1091 {
1092 struct wcn36xx *wcn = hw->priv;
1093
1094 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
1095
1096 flush_workqueue(wcn->hal_ind_wq);
1097 wcn36xx_smd_set_power_params(wcn, true);
1098 return 0;
1099 }
1100
wcn36xx_resume(struct ieee80211_hw * hw)1101 static int wcn36xx_resume(struct ieee80211_hw *hw)
1102 {
1103 struct wcn36xx *wcn = hw->priv;
1104
1105 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
1106
1107 flush_workqueue(wcn->hal_ind_wq);
1108 wcn36xx_smd_set_power_params(wcn, false);
1109 return 0;
1110 }
1111
1112 #endif
1113
wcn36xx_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)1114 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
1115 struct ieee80211_vif *vif,
1116 struct ieee80211_ampdu_params *params)
1117 {
1118 struct wcn36xx *wcn = hw->priv;
1119 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta);
1120 struct ieee80211_sta *sta = params->sta;
1121 enum ieee80211_ampdu_mlme_action action = params->action;
1122 u16 tid = params->tid;
1123 u16 *ssn = ¶ms->ssn;
1124 int ret = 0;
1125 u8 session;
1126
1127 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
1128 action, tid);
1129
1130 mutex_lock(&wcn->conf_mutex);
1131
1132 switch (action) {
1133 case IEEE80211_AMPDU_RX_START:
1134 sta_priv->tid = tid;
1135 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
1136 get_sta_index(vif, sta_priv));
1137 wcn36xx_smd_add_ba(wcn, session);
1138 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv), tid,
1139 session);
1140 break;
1141 case IEEE80211_AMPDU_RX_STOP:
1142 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
1143 break;
1144 case IEEE80211_AMPDU_TX_START:
1145 spin_lock_bh(&sta_priv->ampdu_lock);
1146 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
1147 spin_unlock_bh(&sta_priv->ampdu_lock);
1148
1149 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
1150 break;
1151 case IEEE80211_AMPDU_TX_OPERATIONAL:
1152 spin_lock_bh(&sta_priv->ampdu_lock);
1153 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
1154 spin_unlock_bh(&sta_priv->ampdu_lock);
1155
1156 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
1157 get_sta_index(vif, sta_priv));
1158 break;
1159 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1160 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1161 case IEEE80211_AMPDU_TX_STOP_CONT:
1162 spin_lock_bh(&sta_priv->ampdu_lock);
1163 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
1164 spin_unlock_bh(&sta_priv->ampdu_lock);
1165
1166 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1167 break;
1168 default:
1169 wcn36xx_err("Unknown AMPDU action\n");
1170 }
1171
1172 mutex_unlock(&wcn->conf_mutex);
1173
1174 return ret;
1175 }
1176
1177 static const struct ieee80211_ops wcn36xx_ops = {
1178 .start = wcn36xx_start,
1179 .stop = wcn36xx_stop,
1180 .add_interface = wcn36xx_add_interface,
1181 .remove_interface = wcn36xx_remove_interface,
1182 #ifdef CONFIG_PM
1183 .suspend = wcn36xx_suspend,
1184 .resume = wcn36xx_resume,
1185 #endif
1186 .config = wcn36xx_config,
1187 .prepare_multicast = wcn36xx_prepare_multicast,
1188 .configure_filter = wcn36xx_configure_filter,
1189 .tx = wcn36xx_tx,
1190 .set_key = wcn36xx_set_key,
1191 .hw_scan = wcn36xx_hw_scan,
1192 .cancel_hw_scan = wcn36xx_cancel_hw_scan,
1193 .sw_scan_start = wcn36xx_sw_scan_start,
1194 .sw_scan_complete = wcn36xx_sw_scan_complete,
1195 .bss_info_changed = wcn36xx_bss_info_changed,
1196 .set_rts_threshold = wcn36xx_set_rts_threshold,
1197 .sta_add = wcn36xx_sta_add,
1198 .sta_remove = wcn36xx_sta_remove,
1199 .ampdu_action = wcn36xx_ampdu_action,
1200
1201 CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)
1202 };
1203
1204 static void
wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap * vht_cap)1205 wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap *vht_cap)
1206 {
1207 vht_cap->vht_supported = true;
1208
1209 vht_cap->cap = (IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 |
1210 IEEE80211_VHT_CAP_SHORT_GI_80 |
1211 IEEE80211_VHT_CAP_RXSTBC_1 |
1212 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
1213 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
1214 3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT |
1215 7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
1216
1217 vht_cap->vht_mcs.rx_mcs_map =
1218 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 |
1219 IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 |
1220 IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 |
1221 IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 |
1222 IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 |
1223 IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 |
1224 IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 |
1225 IEEE80211_VHT_MCS_NOT_SUPPORTED << 14);
1226
1227 vht_cap->vht_mcs.rx_highest = cpu_to_le16(433);
1228 vht_cap->vht_mcs.tx_highest = vht_cap->vht_mcs.rx_highest;
1229
1230 vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map;
1231 }
1232
wcn36xx_init_ieee80211(struct wcn36xx * wcn)1233 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
1234 {
1235 static const u32 cipher_suites[] = {
1236 WLAN_CIPHER_SUITE_WEP40,
1237 WLAN_CIPHER_SUITE_WEP104,
1238 WLAN_CIPHER_SUITE_TKIP,
1239 WLAN_CIPHER_SUITE_CCMP,
1240 };
1241
1242 ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
1243 ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
1244 ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
1245 ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
1246 ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
1247 ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
1248 ieee80211_hw_set(wcn->hw, REPORTS_TX_ACK_STATUS);
1249
1250 wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1251 BIT(NL80211_IFTYPE_AP) |
1252 BIT(NL80211_IFTYPE_ADHOC) |
1253 BIT(NL80211_IFTYPE_MESH_POINT);
1254
1255 wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
1256 if (wcn->rf_id != RF_IRIS_WCN3620)
1257 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
1258
1259 if (wcn->rf_id == RF_IRIS_WCN3680)
1260 wcn36xx_set_ieee80211_vht_caps(&wcn_band_5ghz.vht_cap);
1261
1262 wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
1263 wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
1264
1265 wcn->hw->wiphy->cipher_suites = cipher_suites;
1266 wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1267
1268 #ifdef CONFIG_PM
1269 wcn->hw->wiphy->wowlan = &wowlan_support;
1270 #endif
1271
1272 wcn->hw->max_listen_interval = 200;
1273
1274 wcn->hw->queues = 4;
1275
1276 SET_IEEE80211_DEV(wcn->hw, wcn->dev);
1277
1278 wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
1279 wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
1280
1281 wiphy_ext_feature_set(wcn->hw->wiphy,
1282 NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1283
1284 return 0;
1285 }
1286
wcn36xx_platform_get_resources(struct wcn36xx * wcn,struct platform_device * pdev)1287 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
1288 struct platform_device *pdev)
1289 {
1290 struct device_node *mmio_node;
1291 struct device_node *iris_node;
1292 struct resource *res;
1293 int index;
1294 int ret;
1295
1296 /* Set TX IRQ */
1297 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "tx");
1298 if (!res) {
1299 wcn36xx_err("failed to get tx_irq\n");
1300 return -ENOENT;
1301 }
1302 wcn->tx_irq = res->start;
1303
1304 /* Set RX IRQ */
1305 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "rx");
1306 if (!res) {
1307 wcn36xx_err("failed to get rx_irq\n");
1308 return -ENOENT;
1309 }
1310 wcn->rx_irq = res->start;
1311
1312 /* Acquire SMSM tx enable handle */
1313 wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev,
1314 "tx-enable", &wcn->tx_enable_state_bit);
1315 if (IS_ERR(wcn->tx_enable_state)) {
1316 wcn36xx_err("failed to get tx-enable state\n");
1317 return PTR_ERR(wcn->tx_enable_state);
1318 }
1319
1320 /* Acquire SMSM tx rings empty handle */
1321 wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev,
1322 "tx-rings-empty", &wcn->tx_rings_empty_state_bit);
1323 if (IS_ERR(wcn->tx_rings_empty_state)) {
1324 wcn36xx_err("failed to get tx-rings-empty state\n");
1325 return PTR_ERR(wcn->tx_rings_empty_state);
1326 }
1327
1328 mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0);
1329 if (!mmio_node) {
1330 wcn36xx_err("failed to acquire qcom,mmio reference\n");
1331 return -EINVAL;
1332 }
1333
1334 wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto");
1335
1336 /* Map the CCU memory */
1337 index = of_property_match_string(mmio_node, "reg-names", "ccu");
1338 wcn->ccu_base = of_iomap(mmio_node, index);
1339 if (!wcn->ccu_base) {
1340 wcn36xx_err("failed to map ccu memory\n");
1341 ret = -ENOMEM;
1342 goto put_mmio_node;
1343 }
1344
1345 /* Map the DXE memory */
1346 index = of_property_match_string(mmio_node, "reg-names", "dxe");
1347 wcn->dxe_base = of_iomap(mmio_node, index);
1348 if (!wcn->dxe_base) {
1349 wcn36xx_err("failed to map dxe memory\n");
1350 ret = -ENOMEM;
1351 goto unmap_ccu;
1352 }
1353
1354 /* External RF module */
1355 iris_node = of_get_child_by_name(mmio_node, "iris");
1356 if (iris_node) {
1357 if (of_device_is_compatible(iris_node, "qcom,wcn3620"))
1358 wcn->rf_id = RF_IRIS_WCN3620;
1359 if (of_device_is_compatible(iris_node, "qcom,wcn3680"))
1360 wcn->rf_id = RF_IRIS_WCN3680;
1361 of_node_put(iris_node);
1362 }
1363
1364 of_node_put(mmio_node);
1365 return 0;
1366
1367 unmap_ccu:
1368 iounmap(wcn->ccu_base);
1369 put_mmio_node:
1370 of_node_put(mmio_node);
1371 return ret;
1372 }
1373
wcn36xx_probe(struct platform_device * pdev)1374 static int wcn36xx_probe(struct platform_device *pdev)
1375 {
1376 struct ieee80211_hw *hw;
1377 struct wcn36xx *wcn;
1378 void *wcnss;
1379 int ret;
1380 const u8 *addr;
1381
1382 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1383
1384 wcnss = dev_get_drvdata(pdev->dev.parent);
1385
1386 hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1387 if (!hw) {
1388 wcn36xx_err("failed to alloc hw\n");
1389 ret = -ENOMEM;
1390 goto out_err;
1391 }
1392 platform_set_drvdata(pdev, hw);
1393 wcn = hw->priv;
1394 wcn->hw = hw;
1395 wcn->dev = &pdev->dev;
1396 wcn->first_boot = true;
1397 mutex_init(&wcn->conf_mutex);
1398 mutex_init(&wcn->hal_mutex);
1399 mutex_init(&wcn->scan_lock);
1400
1401 ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32));
1402 if (ret < 0) {
1403 wcn36xx_err("failed to set DMA mask: %d\n", ret);
1404 goto out_wq;
1405 }
1406
1407 wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
1408 if (IS_ERR(wcn->smd_channel)) {
1409 wcn36xx_err("failed to open WLAN_CTRL channel\n");
1410 ret = PTR_ERR(wcn->smd_channel);
1411 goto out_wq;
1412 }
1413
1414 addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret);
1415 if (addr && ret != ETH_ALEN) {
1416 wcn36xx_err("invalid local-mac-address\n");
1417 ret = -EINVAL;
1418 goto out_destroy_ept;
1419 } else if (addr) {
1420 wcn36xx_info("mac address: %pM\n", addr);
1421 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1422 }
1423
1424 ret = wcn36xx_platform_get_resources(wcn, pdev);
1425 if (ret)
1426 goto out_destroy_ept;
1427
1428 wcn36xx_init_ieee80211(wcn);
1429 ret = ieee80211_register_hw(wcn->hw);
1430 if (ret)
1431 goto out_unmap;
1432
1433 return 0;
1434
1435 out_unmap:
1436 iounmap(wcn->ccu_base);
1437 iounmap(wcn->dxe_base);
1438 out_destroy_ept:
1439 rpmsg_destroy_ept(wcn->smd_channel);
1440 out_wq:
1441 ieee80211_free_hw(hw);
1442 out_err:
1443 return ret;
1444 }
1445
wcn36xx_remove(struct platform_device * pdev)1446 static int wcn36xx_remove(struct platform_device *pdev)
1447 {
1448 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1449 struct wcn36xx *wcn = hw->priv;
1450 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1451
1452 release_firmware(wcn->nv);
1453
1454 ieee80211_unregister_hw(hw);
1455
1456 qcom_smem_state_put(wcn->tx_enable_state);
1457 qcom_smem_state_put(wcn->tx_rings_empty_state);
1458
1459 rpmsg_destroy_ept(wcn->smd_channel);
1460
1461 iounmap(wcn->dxe_base);
1462 iounmap(wcn->ccu_base);
1463
1464 mutex_destroy(&wcn->hal_mutex);
1465 ieee80211_free_hw(hw);
1466
1467 return 0;
1468 }
1469
1470 static const struct of_device_id wcn36xx_of_match[] = {
1471 { .compatible = "qcom,wcnss-wlan" },
1472 {}
1473 };
1474 MODULE_DEVICE_TABLE(of, wcn36xx_of_match);
1475
1476 static struct platform_driver wcn36xx_driver = {
1477 .probe = wcn36xx_probe,
1478 .remove = wcn36xx_remove,
1479 .driver = {
1480 .name = "wcn36xx",
1481 .of_match_table = wcn36xx_of_match,
1482 },
1483 };
1484
1485 module_platform_driver(wcn36xx_driver);
1486
1487 MODULE_LICENSE("Dual BSD/GPL");
1488 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1489 MODULE_FIRMWARE(WLAN_NV_FILE);
1490
