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 IEEE80211_HT_CAP_SGI_40 |
139 IEEE80211_HT_CAP_SUP_WIDTH_20_40,
140 .ht_supported = true,
141 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
142 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
143 .mcs = {
144 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
145 .rx_highest = cpu_to_le16(72),
146 .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
147 }
148 }
149 };
150
151 static struct ieee80211_supported_band wcn_band_5ghz = {
152 .channels = wcn_5ghz_channels,
153 .n_channels = ARRAY_SIZE(wcn_5ghz_channels),
154 .bitrates = wcn_5ghz_rates,
155 .n_bitrates = ARRAY_SIZE(wcn_5ghz_rates),
156 .ht_cap = {
157 .cap = IEEE80211_HT_CAP_GRN_FLD |
158 IEEE80211_HT_CAP_SGI_20 |
159 IEEE80211_HT_CAP_DSSSCCK40 |
160 IEEE80211_HT_CAP_LSIG_TXOP_PROT |
161 IEEE80211_HT_CAP_SGI_40 |
162 IEEE80211_HT_CAP_SUP_WIDTH_20_40,
163 .ht_supported = true,
164 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
165 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
166 .mcs = {
167 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
168 .rx_highest = cpu_to_le16(150),
169 .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
170 }
171 }
172 };
173
174 #ifdef CONFIG_PM
175
176 static const struct wiphy_wowlan_support wowlan_support = {
177 .flags = WIPHY_WOWLAN_ANY
178 };
179
180 #endif
181
get_sta_index(struct ieee80211_vif * vif,struct wcn36xx_sta * sta_priv)182 static inline u8 get_sta_index(struct ieee80211_vif *vif,
183 struct wcn36xx_sta *sta_priv)
184 {
185 return NL80211_IFTYPE_STATION == vif->type ?
186 sta_priv->bss_sta_index :
187 sta_priv->sta_index;
188 }
189
190 static const char * const wcn36xx_caps_names[] = {
191 "MCC", /* 0 */
192 "P2P", /* 1 */
193 "DOT11AC", /* 2 */
194 "SLM_SESSIONIZATION", /* 3 */
195 "DOT11AC_OPMODE", /* 4 */
196 "SAP32STA", /* 5 */
197 "TDLS", /* 6 */
198 "P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */
199 "WLANACTIVE_OFFLOAD", /* 8 */
200 "BEACON_OFFLOAD", /* 9 */
201 "SCAN_OFFLOAD", /* 10 */
202 "ROAM_OFFLOAD", /* 11 */
203 "BCN_MISS_OFFLOAD", /* 12 */
204 "STA_POWERSAVE", /* 13 */
205 "STA_ADVANCED_PWRSAVE", /* 14 */
206 "AP_UAPSD", /* 15 */
207 "AP_DFS", /* 16 */
208 "BLOCKACK", /* 17 */
209 "PHY_ERR", /* 18 */
210 "BCN_FILTER", /* 19 */
211 "RTT", /* 20 */
212 "RATECTRL", /* 21 */
213 "WOW", /* 22 */
214 "WLAN_ROAM_SCAN_OFFLOAD", /* 23 */
215 "SPECULATIVE_PS_POLL", /* 24 */
216 "SCAN_SCH", /* 25 */
217 "IBSS_HEARTBEAT_OFFLOAD", /* 26 */
218 "WLAN_SCAN_OFFLOAD", /* 27 */
219 "WLAN_PERIODIC_TX_PTRN", /* 28 */
220 "ADVANCE_TDLS", /* 29 */
221 "BATCH_SCAN", /* 30 */
222 "FW_IN_TX_PATH", /* 31 */
223 "EXTENDED_NSOFFLOAD_SLOT", /* 32 */
224 "CH_SWITCH_V1", /* 33 */
225 "HT40_OBSS_SCAN", /* 34 */
226 "UPDATE_CHANNEL_LIST", /* 35 */
227 "WLAN_MCADDR_FLT", /* 36 */
228 "WLAN_CH144", /* 37 */
229 "NAN", /* 38 */
230 "TDLS_SCAN_COEXISTENCE", /* 39 */
231 "LINK_LAYER_STATS_MEAS", /* 40 */
232 "MU_MIMO", /* 41 */
233 "EXTENDED_SCAN", /* 42 */
234 "DYNAMIC_WMM_PS", /* 43 */
235 "MAC_SPOOFED_SCAN", /* 44 */
236 "BMU_ERROR_GENERIC_RECOVERY", /* 45 */
237 "DISA", /* 46 */
238 "FW_STATS", /* 47 */
239 "WPS_PRBRSP_TMPL", /* 48 */
240 "BCN_IE_FLT_DELTA", /* 49 */
241 "TDLS_OFF_CHANNEL", /* 51 */
242 "RTT3", /* 52 */
243 "MGMT_FRAME_LOGGING", /* 53 */
244 "ENHANCED_TXBD_COMPLETION", /* 54 */
245 "LOGGING_ENHANCEMENT", /* 55 */
246 "EXT_SCAN_ENHANCED", /* 56 */
247 "MEMORY_DUMP_SUPPORTED", /* 57 */
248 "PER_PKT_STATS_SUPPORTED", /* 58 */
249 "EXT_LL_STAT", /* 60 */
250 "WIFI_CONFIG", /* 61 */
251 "ANTENNA_DIVERSITY_SELECTION", /* 62 */
252 };
253
wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)254 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)
255 {
256 if (x >= ARRAY_SIZE(wcn36xx_caps_names))
257 return "UNKNOWN";
258 return wcn36xx_caps_names[x];
259 }
260
wcn36xx_feat_caps_info(struct wcn36xx * wcn)261 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
262 {
263 int i;
264
265 for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
266 if (get_feat_caps(wcn->fw_feat_caps, i))
267 wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n", wcn36xx_get_cap_name(i));
268 }
269 }
270
wcn36xx_start(struct ieee80211_hw * hw)271 static int wcn36xx_start(struct ieee80211_hw *hw)
272 {
273 struct wcn36xx *wcn = hw->priv;
274 int ret;
275
276 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
277
278 /* SMD initialization */
279 ret = wcn36xx_smd_open(wcn);
280 if (ret) {
281 wcn36xx_err("Failed to open smd channel: %d\n", ret);
282 goto out_err;
283 }
284
285 /* Allocate memory pools for Mgmt BD headers and Data BD headers */
286 ret = wcn36xx_dxe_allocate_mem_pools(wcn);
287 if (ret) {
288 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
289 goto out_smd_close;
290 }
291
292 ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
293 if (ret) {
294 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
295 goto out_free_dxe_pool;
296 }
297
298 ret = wcn36xx_smd_load_nv(wcn);
299 if (ret) {
300 wcn36xx_err("Failed to push NV to chip\n");
301 goto out_free_dxe_ctl;
302 }
303
304 ret = wcn36xx_smd_start(wcn);
305 if (ret) {
306 wcn36xx_err("Failed to start chip\n");
307 goto out_free_dxe_ctl;
308 }
309
310 if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
311 ret = wcn36xx_smd_feature_caps_exchange(wcn);
312 if (ret)
313 wcn36xx_warn("Exchange feature caps failed\n");
314 else
315 wcn36xx_feat_caps_info(wcn);
316 }
317
318 /* DMA channel initialization */
319 ret = wcn36xx_dxe_init(wcn);
320 if (ret) {
321 wcn36xx_err("DXE init failed\n");
322 goto out_smd_stop;
323 }
324
325 wcn36xx_debugfs_init(wcn);
326
327 INIT_LIST_HEAD(&wcn->vif_list);
328 spin_lock_init(&wcn->dxe_lock);
329
330 return 0;
331
332 out_smd_stop:
333 wcn36xx_smd_stop(wcn);
334 out_free_dxe_ctl:
335 wcn36xx_dxe_free_ctl_blks(wcn);
336 out_free_dxe_pool:
337 wcn36xx_dxe_free_mem_pools(wcn);
338 out_smd_close:
339 wcn36xx_smd_close(wcn);
340 out_err:
341 return ret;
342 }
343
wcn36xx_stop(struct ieee80211_hw * hw)344 static void wcn36xx_stop(struct ieee80211_hw *hw)
345 {
346 struct wcn36xx *wcn = hw->priv;
347
348 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
349
350 mutex_lock(&wcn->scan_lock);
351 if (wcn->scan_req) {
352 struct cfg80211_scan_info scan_info = {
353 .aborted = true,
354 };
355
356 ieee80211_scan_completed(wcn->hw, &scan_info);
357 }
358 wcn->scan_req = NULL;
359 mutex_unlock(&wcn->scan_lock);
360
361 wcn36xx_debugfs_exit(wcn);
362 wcn36xx_smd_stop(wcn);
363 wcn36xx_dxe_deinit(wcn);
364 wcn36xx_smd_close(wcn);
365
366 wcn36xx_dxe_free_mem_pools(wcn);
367 wcn36xx_dxe_free_ctl_blks(wcn);
368 }
369
wcn36xx_change_ps(struct wcn36xx * wcn,bool enable)370 static void wcn36xx_change_ps(struct wcn36xx *wcn, bool enable)
371 {
372 struct ieee80211_vif *vif = NULL;
373 struct wcn36xx_vif *tmp;
374
375 list_for_each_entry(tmp, &wcn->vif_list, list) {
376 vif = wcn36xx_priv_to_vif(tmp);
377 if (enable && !wcn->sw_scan) {
378 if (vif->bss_conf.ps) /* ps allowed ? */
379 wcn36xx_pmc_enter_bmps_state(wcn, vif);
380 } else {
381 wcn36xx_pmc_exit_bmps_state(wcn, vif);
382 }
383 }
384 }
385
wcn36xx_change_opchannel(struct wcn36xx * wcn,int ch)386 static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch)
387 {
388 struct ieee80211_vif *vif = NULL;
389 struct wcn36xx_vif *tmp;
390
391 list_for_each_entry(tmp, &wcn->vif_list, list) {
392 vif = wcn36xx_priv_to_vif(tmp);
393 wcn36xx_smd_switch_channel(wcn, vif, ch);
394 }
395 }
396
wcn36xx_config(struct ieee80211_hw * hw,u32 changed)397 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
398 {
399 struct wcn36xx *wcn = hw->priv;
400 int ret;
401
402 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
403
404 mutex_lock(&wcn->conf_mutex);
405
406 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
407 int ch = WCN36XX_HW_CHANNEL(wcn);
408 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
409 ch);
410
411 if (wcn->sw_scan_opchannel == ch && wcn->sw_scan_channel) {
412 /* If channel is the initial operating channel, we may
413 * want to receive/transmit regular data packets, then
414 * simply stop the scan session and exit PS mode.
415 */
416 if (wcn->sw_scan_channel)
417 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
418 if (wcn->sw_scan_init) {
419 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
420 wcn->sw_scan_vif);
421 }
422 } else if (wcn->sw_scan) {
423 /* A scan is ongoing, do not change the operating
424 * channel, but start a scan session on the channel.
425 */
426 if (wcn->sw_scan_channel)
427 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
428 if (!wcn->sw_scan_init) {
429 /* This can fail if we are unable to notify the
430 * operating channel.
431 */
432 ret = wcn36xx_smd_init_scan(wcn,
433 HAL_SYS_MODE_SCAN,
434 wcn->sw_scan_vif);
435 if (ret) {
436 mutex_unlock(&wcn->conf_mutex);
437 return -EIO;
438 }
439 }
440 wcn36xx_smd_start_scan(wcn, ch);
441 } else {
442 wcn36xx_change_opchannel(wcn, ch);
443 }
444 }
445
446 if (changed & IEEE80211_CONF_CHANGE_PS)
447 wcn36xx_change_ps(wcn, hw->conf.flags & IEEE80211_CONF_PS);
448
449 mutex_unlock(&wcn->conf_mutex);
450
451 return 0;
452 }
453
wcn36xx_configure_filter(struct ieee80211_hw * hw,unsigned int changed,unsigned int * total,u64 multicast)454 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
455 unsigned int changed,
456 unsigned int *total, u64 multicast)
457 {
458 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
459 struct wcn36xx *wcn = hw->priv;
460 struct wcn36xx_vif *tmp;
461 struct ieee80211_vif *vif = NULL;
462
463 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
464
465 mutex_lock(&wcn->conf_mutex);
466
467 *total &= FIF_ALLMULTI;
468
469 fp = (void *)(unsigned long)multicast;
470 list_for_each_entry(tmp, &wcn->vif_list, list) {
471 vif = wcn36xx_priv_to_vif(tmp);
472
473 /* FW handles MC filtering only when connected as STA */
474 if (*total & FIF_ALLMULTI)
475 wcn36xx_smd_set_mc_list(wcn, vif, NULL);
476 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc)
477 wcn36xx_smd_set_mc_list(wcn, vif, fp);
478 }
479
480 mutex_unlock(&wcn->conf_mutex);
481 kfree(fp);
482 }
483
wcn36xx_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)484 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw,
485 struct netdev_hw_addr_list *mc_list)
486 {
487 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
488 struct netdev_hw_addr *ha;
489
490 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n");
491 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
492 if (!fp) {
493 wcn36xx_err("Out of memory setting filters.\n");
494 return 0;
495 }
496
497 fp->mc_addr_count = 0;
498 /* update multicast filtering parameters */
499 if (netdev_hw_addr_list_count(mc_list) <=
500 WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) {
501 netdev_hw_addr_list_for_each(ha, mc_list) {
502 memcpy(fp->mc_addr[fp->mc_addr_count],
503 ha->addr, ETH_ALEN);
504 fp->mc_addr_count++;
505 }
506 }
507
508 return (u64)(unsigned long)fp;
509 }
510
wcn36xx_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)511 static void wcn36xx_tx(struct ieee80211_hw *hw,
512 struct ieee80211_tx_control *control,
513 struct sk_buff *skb)
514 {
515 struct wcn36xx *wcn = hw->priv;
516 struct wcn36xx_sta *sta_priv = NULL;
517
518 if (control->sta)
519 sta_priv = wcn36xx_sta_to_priv(control->sta);
520
521 if (wcn36xx_start_tx(wcn, sta_priv, skb))
522 ieee80211_free_txskb(wcn->hw, skb);
523 }
524
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)525 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
526 struct ieee80211_vif *vif,
527 struct ieee80211_sta *sta,
528 struct ieee80211_key_conf *key_conf)
529 {
530 struct wcn36xx *wcn = hw->priv;
531 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
532 struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL;
533 int ret = 0;
534 u8 key[WLAN_MAX_KEY_LEN];
535
536 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
537 wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
538 cmd, key_conf->cipher, key_conf->keyidx,
539 key_conf->keylen, key_conf->flags);
540 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
541 key_conf->key,
542 key_conf->keylen);
543
544 mutex_lock(&wcn->conf_mutex);
545
546 switch (key_conf->cipher) {
547 case WLAN_CIPHER_SUITE_WEP40:
548 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
549 break;
550 case WLAN_CIPHER_SUITE_WEP104:
551 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104;
552 break;
553 case WLAN_CIPHER_SUITE_CCMP:
554 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
555 break;
556 case WLAN_CIPHER_SUITE_TKIP:
557 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
558 break;
559 default:
560 wcn36xx_err("Unsupported key type 0x%x\n",
561 key_conf->cipher);
562 ret = -EOPNOTSUPP;
563 goto out;
564 }
565
566 switch (cmd) {
567 case SET_KEY:
568 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
569 /*
570 * Supplicant is sending key in the wrong order:
571 * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
572 * but HW expects it to be in the order as described in
573 * IEEE 802.11 spec (see chapter 11.7) like this:
574 * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
575 */
576 memcpy(key, key_conf->key, 16);
577 memcpy(key + 16, key_conf->key + 24, 8);
578 memcpy(key + 24, key_conf->key + 16, 8);
579 } else {
580 memcpy(key, key_conf->key, key_conf->keylen);
581 }
582
583 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
584 sta_priv->is_data_encrypted = true;
585 /* Reconfigure bss with encrypt_type */
586 if (NL80211_IFTYPE_STATION == vif->type) {
587 wcn36xx_smd_config_bss(wcn,
588 vif,
589 sta,
590 sta->addr,
591 true);
592 wcn36xx_smd_config_sta(wcn, vif, sta);
593 }
594
595 wcn36xx_smd_set_stakey(wcn,
596 vif_priv->encrypt_type,
597 key_conf->keyidx,
598 key_conf->keylen,
599 key,
600 get_sta_index(vif, sta_priv));
601 } else {
602 wcn36xx_smd_set_bsskey(wcn,
603 vif_priv->encrypt_type,
604 vif_priv->bss_index,
605 key_conf->keyidx,
606 key_conf->keylen,
607 key);
608
609 if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
610 (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
611 list_for_each_entry(sta_priv,
612 &vif_priv->sta_list, list) {
613 sta_priv->is_data_encrypted = true;
614 wcn36xx_smd_set_stakey(wcn,
615 vif_priv->encrypt_type,
616 key_conf->keyidx,
617 key_conf->keylen,
618 key,
619 get_sta_index(vif, sta_priv));
620 }
621 }
622 }
623 break;
624 case DISABLE_KEY:
625 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
626 if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX)
627 wcn36xx_smd_remove_bsskey(wcn,
628 vif_priv->encrypt_type,
629 vif_priv->bss_index,
630 key_conf->keyidx);
631
632 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
633 } else {
634 sta_priv->is_data_encrypted = false;
635 /* do not remove key if disassociated */
636 if (sta_priv->aid)
637 wcn36xx_smd_remove_stakey(wcn,
638 vif_priv->encrypt_type,
639 key_conf->keyidx,
640 get_sta_index(vif, sta_priv));
641 }
642 break;
643 default:
644 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
645 ret = -EOPNOTSUPP;
646 goto out;
647 }
648
649 out:
650 mutex_unlock(&wcn->conf_mutex);
651
652 return ret;
653 }
654
wcn36xx_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)655 static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
656 struct ieee80211_vif *vif,
657 struct ieee80211_scan_request *hw_req)
658 {
659 struct wcn36xx *wcn = hw->priv;
660 int i;
661
662 if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
663 /* fallback to mac80211 software scan */
664 return 1;
665 }
666
667 /* For unknown reason, the hardware offloaded scan only works with
668 * 2.4Ghz channels, fallback to software scan in other cases.
669 */
670 for (i = 0; i < hw_req->req.n_channels; i++) {
671 if (hw_req->req.channels[i]->band != NL80211_BAND_2GHZ)
672 return 1;
673 }
674
675 mutex_lock(&wcn->scan_lock);
676 if (wcn->scan_req) {
677 mutex_unlock(&wcn->scan_lock);
678 return -EBUSY;
679 }
680
681 wcn->scan_aborted = false;
682 wcn->scan_req = &hw_req->req;
683
684 mutex_unlock(&wcn->scan_lock);
685
686 return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req);
687 }
688
wcn36xx_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)689 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
690 struct ieee80211_vif *vif)
691 {
692 struct wcn36xx *wcn = hw->priv;
693
694 mutex_lock(&wcn->scan_lock);
695 wcn->scan_aborted = true;
696 mutex_unlock(&wcn->scan_lock);
697
698 if (get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
699 /* ieee80211_scan_completed will be called on FW scan
700 * indication */
701 wcn36xx_smd_stop_hw_scan(wcn);
702 }
703 }
704
wcn36xx_sw_scan_start(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const u8 * mac_addr)705 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
706 struct ieee80211_vif *vif,
707 const u8 *mac_addr)
708 {
709 struct wcn36xx *wcn = hw->priv;
710 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
711
712 wcn->sw_scan = true;
713 wcn->sw_scan_vif = vif;
714 wcn->sw_scan_channel = 0;
715 if (vif_priv->sta_assoc)
716 wcn->sw_scan_opchannel = WCN36XX_HW_CHANNEL(wcn);
717 else
718 wcn->sw_scan_opchannel = 0;
719 }
720
wcn36xx_sw_scan_complete(struct ieee80211_hw * hw,struct ieee80211_vif * vif)721 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
722 struct ieee80211_vif *vif)
723 {
724 struct wcn36xx *wcn = hw->priv;
725
726 /* ensure that any scan session is finished */
727 if (wcn->sw_scan_channel)
728 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
729 if (wcn->sw_scan_init) {
730 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
731 wcn->sw_scan_vif);
732 }
733 wcn->sw_scan = false;
734 wcn->sw_scan_opchannel = 0;
735 }
736
wcn36xx_update_allowed_rates(struct ieee80211_sta * sta,enum nl80211_band band)737 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
738 enum nl80211_band band)
739 {
740 int i, size;
741 u16 *rates_table;
742 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
743 u32 rates = sta->supp_rates[band];
744
745 memset(&sta_priv->supported_rates, 0,
746 sizeof(sta_priv->supported_rates));
747 sta_priv->supported_rates.op_rate_mode = STA_11n;
748
749 size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
750 rates_table = sta_priv->supported_rates.dsss_rates;
751 if (band == NL80211_BAND_2GHZ) {
752 for (i = 0; i < size; i++) {
753 if (rates & 0x01) {
754 rates_table[i] = wcn_2ghz_rates[i].hw_value;
755 rates = rates >> 1;
756 }
757 }
758 }
759
760 size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
761 rates_table = sta_priv->supported_rates.ofdm_rates;
762 for (i = 0; i < size; i++) {
763 if (rates & 0x01) {
764 rates_table[i] = wcn_5ghz_rates[i].hw_value;
765 rates = rates >> 1;
766 }
767 }
768
769 if (sta->ht_cap.ht_supported) {
770 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
771 sizeof(sta_priv->supported_rates.supported_mcs_set));
772 memcpy(sta_priv->supported_rates.supported_mcs_set,
773 sta->ht_cap.mcs.rx_mask,
774 sizeof(sta->ht_cap.mcs.rx_mask));
775 }
776
777 if (sta->vht_cap.vht_supported) {
778 sta_priv->supported_rates.op_rate_mode = STA_11ac;
779 sta_priv->supported_rates.vht_rx_mcs_map =
780 sta->vht_cap.vht_mcs.rx_mcs_map;
781 sta_priv->supported_rates.vht_tx_mcs_map =
782 sta->vht_cap.vht_mcs.tx_mcs_map;
783 }
784 }
785
wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates * rates)786 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
787 {
788 u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
789 HW_RATE_INDEX_6MBPS,
790 HW_RATE_INDEX_9MBPS,
791 HW_RATE_INDEX_12MBPS,
792 HW_RATE_INDEX_18MBPS,
793 HW_RATE_INDEX_24MBPS,
794 HW_RATE_INDEX_36MBPS,
795 HW_RATE_INDEX_48MBPS,
796 HW_RATE_INDEX_54MBPS
797 };
798 u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
799 HW_RATE_INDEX_1MBPS,
800 HW_RATE_INDEX_2MBPS,
801 HW_RATE_INDEX_5_5MBPS,
802 HW_RATE_INDEX_11MBPS
803 };
804
805 rates->op_rate_mode = STA_11n;
806 memcpy(rates->dsss_rates, dsss_rates,
807 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
808 memcpy(rates->ofdm_rates, ofdm_rates,
809 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
810 rates->supported_mcs_set[0] = 0xFF;
811 }
812
wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 * rates)813 void wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 *rates)
814 {
815 rates->op_rate_mode = STA_11ac;
816 rates->vht_rx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
817 rates->vht_tx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
818 }
819
wcn36xx_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u32 changed)820 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
821 struct ieee80211_vif *vif,
822 struct ieee80211_bss_conf *bss_conf,
823 u32 changed)
824 {
825 struct wcn36xx *wcn = hw->priv;
826 struct sk_buff *skb = NULL;
827 u16 tim_off, tim_len;
828 enum wcn36xx_hal_link_state link_state;
829 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
830
831 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
832 vif, changed);
833
834 mutex_lock(&wcn->conf_mutex);
835
836 if (changed & BSS_CHANGED_BEACON_INFO) {
837 wcn36xx_dbg(WCN36XX_DBG_MAC,
838 "mac bss changed dtim period %d\n",
839 bss_conf->dtim_period);
840
841 vif_priv->dtim_period = bss_conf->dtim_period;
842 }
843
844 if (changed & BSS_CHANGED_BSSID) {
845 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
846 bss_conf->bssid);
847
848 if (!is_zero_ether_addr(bss_conf->bssid)) {
849 vif_priv->is_joining = true;
850 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
851 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
852 WCN36XX_HAL_LINK_PREASSOC_STATE);
853 wcn36xx_smd_join(wcn, bss_conf->bssid,
854 vif->addr, WCN36XX_HW_CHANNEL(wcn));
855 wcn36xx_smd_config_bss(wcn, vif, NULL,
856 bss_conf->bssid, false);
857 } else {
858 vif_priv->is_joining = false;
859 wcn36xx_smd_delete_bss(wcn, vif);
860 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
861 WCN36XX_HAL_LINK_IDLE_STATE);
862 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
863 }
864 }
865
866 if (changed & BSS_CHANGED_SSID) {
867 wcn36xx_dbg(WCN36XX_DBG_MAC,
868 "mac bss changed ssid\n");
869 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
870 bss_conf->ssid, bss_conf->ssid_len);
871
872 vif_priv->ssid.length = bss_conf->ssid_len;
873 memcpy(&vif_priv->ssid.ssid,
874 bss_conf->ssid,
875 bss_conf->ssid_len);
876 }
877
878 if (changed & BSS_CHANGED_ASSOC) {
879 vif_priv->is_joining = false;
880 if (bss_conf->assoc) {
881 struct ieee80211_sta *sta;
882 struct wcn36xx_sta *sta_priv;
883
884 wcn36xx_dbg(WCN36XX_DBG_MAC,
885 "mac assoc bss %pM vif %pM AID=%d\n",
886 bss_conf->bssid,
887 vif->addr,
888 bss_conf->aid);
889
890 vif_priv->sta_assoc = true;
891
892 /*
893 * Holding conf_mutex ensures mutal exclusion with
894 * wcn36xx_sta_remove() and as such ensures that sta
895 * won't be freed while we're operating on it. As such
896 * we do not need to hold the rcu_read_lock().
897 */
898 sta = ieee80211_find_sta(vif, bss_conf->bssid);
899 if (!sta) {
900 wcn36xx_err("sta %pM is not found\n",
901 bss_conf->bssid);
902 goto out;
903 }
904 sta_priv = wcn36xx_sta_to_priv(sta);
905
906 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
907
908 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
909 vif->addr,
910 WCN36XX_HAL_LINK_POSTASSOC_STATE);
911 wcn36xx_smd_config_bss(wcn, vif, sta,
912 bss_conf->bssid,
913 true);
914 sta_priv->aid = bss_conf->aid;
915 /*
916 * config_sta must be called from because this is the
917 * place where AID is available.
918 */
919 wcn36xx_smd_config_sta(wcn, vif, sta);
920 } else {
921 wcn36xx_dbg(WCN36XX_DBG_MAC,
922 "disassociated bss %pM vif %pM AID=%d\n",
923 bss_conf->bssid,
924 vif->addr,
925 bss_conf->aid);
926 vif_priv->sta_assoc = false;
927 wcn36xx_smd_set_link_st(wcn,
928 bss_conf->bssid,
929 vif->addr,
930 WCN36XX_HAL_LINK_IDLE_STATE);
931 }
932 }
933
934 if (changed & BSS_CHANGED_AP_PROBE_RESP) {
935 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
936 skb = ieee80211_proberesp_get(hw, vif);
937 if (!skb) {
938 wcn36xx_err("failed to alloc probereq skb\n");
939 goto out;
940 }
941
942 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
943 dev_kfree_skb(skb);
944 }
945
946 if (changed & BSS_CHANGED_BEACON_ENABLED ||
947 changed & BSS_CHANGED_BEACON) {
948 wcn36xx_dbg(WCN36XX_DBG_MAC,
949 "mac bss changed beacon enabled %d\n",
950 bss_conf->enable_beacon);
951
952 if (bss_conf->enable_beacon) {
953 vif_priv->dtim_period = bss_conf->dtim_period;
954 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
955 wcn36xx_smd_config_bss(wcn, vif, NULL,
956 vif->addr, false);
957 skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
958 &tim_len);
959 if (!skb) {
960 wcn36xx_err("failed to alloc beacon skb\n");
961 goto out;
962 }
963 wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
964 dev_kfree_skb(skb);
965
966 if (vif->type == NL80211_IFTYPE_ADHOC ||
967 vif->type == NL80211_IFTYPE_MESH_POINT)
968 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
969 else
970 link_state = WCN36XX_HAL_LINK_AP_STATE;
971
972 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
973 link_state);
974 } else {
975 wcn36xx_smd_delete_bss(wcn, vif);
976 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
977 WCN36XX_HAL_LINK_IDLE_STATE);
978 }
979 }
980 out:
981
982 mutex_unlock(&wcn->conf_mutex);
983 }
984
985 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
wcn36xx_set_rts_threshold(struct ieee80211_hw * hw,u32 value)986 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
987 {
988 struct wcn36xx *wcn = hw->priv;
989 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
990
991 mutex_lock(&wcn->conf_mutex);
992 wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
993 mutex_unlock(&wcn->conf_mutex);
994
995 return 0;
996 }
997
wcn36xx_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)998 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
999 struct ieee80211_vif *vif)
1000 {
1001 struct wcn36xx *wcn = hw->priv;
1002 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1003 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
1004
1005 mutex_lock(&wcn->conf_mutex);
1006
1007 list_del(&vif_priv->list);
1008 wcn36xx_smd_delete_sta_self(wcn, vif->addr);
1009
1010 mutex_unlock(&wcn->conf_mutex);
1011 }
1012
wcn36xx_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1013 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
1014 struct ieee80211_vif *vif)
1015 {
1016 struct wcn36xx *wcn = hw->priv;
1017 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1018
1019 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
1020 vif, vif->type);
1021
1022 if (!(NL80211_IFTYPE_STATION == vif->type ||
1023 NL80211_IFTYPE_AP == vif->type ||
1024 NL80211_IFTYPE_ADHOC == vif->type ||
1025 NL80211_IFTYPE_MESH_POINT == vif->type)) {
1026 wcn36xx_warn("Unsupported interface type requested: %d\n",
1027 vif->type);
1028 return -EOPNOTSUPP;
1029 }
1030
1031 mutex_lock(&wcn->conf_mutex);
1032
1033 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
1034 INIT_LIST_HEAD(&vif_priv->sta_list);
1035 list_add(&vif_priv->list, &wcn->vif_list);
1036 wcn36xx_smd_add_sta_self(wcn, vif);
1037
1038 mutex_unlock(&wcn->conf_mutex);
1039
1040 return 0;
1041 }
1042
wcn36xx_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1043 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1044 struct ieee80211_sta *sta)
1045 {
1046 struct wcn36xx *wcn = hw->priv;
1047 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1048 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1049 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
1050 vif, sta->addr);
1051
1052 mutex_lock(&wcn->conf_mutex);
1053
1054 spin_lock_init(&sta_priv->ampdu_lock);
1055 sta_priv->vif = vif_priv;
1056 list_add(&sta_priv->list, &vif_priv->sta_list);
1057
1058 /*
1059 * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
1060 * at this stage AID is not available yet.
1061 */
1062 if (NL80211_IFTYPE_STATION != vif->type) {
1063 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
1064 sta_priv->aid = sta->aid;
1065 wcn36xx_smd_config_sta(wcn, vif, sta);
1066 }
1067
1068 mutex_unlock(&wcn->conf_mutex);
1069
1070 return 0;
1071 }
1072
wcn36xx_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1073 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
1074 struct ieee80211_vif *vif,
1075 struct ieee80211_sta *sta)
1076 {
1077 struct wcn36xx *wcn = hw->priv;
1078 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1079
1080 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
1081 vif, sta->addr, sta_priv->sta_index);
1082
1083 mutex_lock(&wcn->conf_mutex);
1084
1085 list_del(&sta_priv->list);
1086 wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
1087 sta_priv->vif = NULL;
1088
1089 mutex_unlock(&wcn->conf_mutex);
1090
1091 return 0;
1092 }
1093
1094 #ifdef CONFIG_PM
1095
wcn36xx_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wow)1096 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
1097 {
1098 struct wcn36xx *wcn = hw->priv;
1099
1100 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
1101
1102 flush_workqueue(wcn->hal_ind_wq);
1103 wcn36xx_smd_set_power_params(wcn, true);
1104 return 0;
1105 }
1106
wcn36xx_resume(struct ieee80211_hw * hw)1107 static int wcn36xx_resume(struct ieee80211_hw *hw)
1108 {
1109 struct wcn36xx *wcn = hw->priv;
1110
1111 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
1112
1113 flush_workqueue(wcn->hal_ind_wq);
1114 wcn36xx_smd_set_power_params(wcn, false);
1115 return 0;
1116 }
1117
1118 #endif
1119
wcn36xx_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)1120 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
1121 struct ieee80211_vif *vif,
1122 struct ieee80211_ampdu_params *params)
1123 {
1124 struct wcn36xx *wcn = hw->priv;
1125 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta);
1126 struct ieee80211_sta *sta = params->sta;
1127 enum ieee80211_ampdu_mlme_action action = params->action;
1128 u16 tid = params->tid;
1129 u16 *ssn = ¶ms->ssn;
1130 int ret = 0;
1131 u8 session;
1132
1133 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
1134 action, tid);
1135
1136 mutex_lock(&wcn->conf_mutex);
1137
1138 switch (action) {
1139 case IEEE80211_AMPDU_RX_START:
1140 sta_priv->tid = tid;
1141 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
1142 get_sta_index(vif, sta_priv));
1143 wcn36xx_smd_add_ba(wcn, session);
1144 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv), tid,
1145 session);
1146 break;
1147 case IEEE80211_AMPDU_RX_STOP:
1148 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
1149 break;
1150 case IEEE80211_AMPDU_TX_START:
1151 spin_lock_bh(&sta_priv->ampdu_lock);
1152 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
1153 spin_unlock_bh(&sta_priv->ampdu_lock);
1154
1155 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
1156 break;
1157 case IEEE80211_AMPDU_TX_OPERATIONAL:
1158 spin_lock_bh(&sta_priv->ampdu_lock);
1159 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
1160 spin_unlock_bh(&sta_priv->ampdu_lock);
1161
1162 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
1163 get_sta_index(vif, sta_priv));
1164 break;
1165 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1166 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1167 case IEEE80211_AMPDU_TX_STOP_CONT:
1168 spin_lock_bh(&sta_priv->ampdu_lock);
1169 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
1170 spin_unlock_bh(&sta_priv->ampdu_lock);
1171
1172 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1173 break;
1174 default:
1175 wcn36xx_err("Unknown AMPDU action\n");
1176 }
1177
1178 mutex_unlock(&wcn->conf_mutex);
1179
1180 return ret;
1181 }
1182
1183 static const struct ieee80211_ops wcn36xx_ops = {
1184 .start = wcn36xx_start,
1185 .stop = wcn36xx_stop,
1186 .add_interface = wcn36xx_add_interface,
1187 .remove_interface = wcn36xx_remove_interface,
1188 #ifdef CONFIG_PM
1189 .suspend = wcn36xx_suspend,
1190 .resume = wcn36xx_resume,
1191 #endif
1192 .config = wcn36xx_config,
1193 .prepare_multicast = wcn36xx_prepare_multicast,
1194 .configure_filter = wcn36xx_configure_filter,
1195 .tx = wcn36xx_tx,
1196 .set_key = wcn36xx_set_key,
1197 .hw_scan = wcn36xx_hw_scan,
1198 .cancel_hw_scan = wcn36xx_cancel_hw_scan,
1199 .sw_scan_start = wcn36xx_sw_scan_start,
1200 .sw_scan_complete = wcn36xx_sw_scan_complete,
1201 .bss_info_changed = wcn36xx_bss_info_changed,
1202 .set_rts_threshold = wcn36xx_set_rts_threshold,
1203 .sta_add = wcn36xx_sta_add,
1204 .sta_remove = wcn36xx_sta_remove,
1205 .ampdu_action = wcn36xx_ampdu_action,
1206
1207 CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)
1208 };
1209
1210 static void
wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap * vht_cap)1211 wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap *vht_cap)
1212 {
1213 vht_cap->vht_supported = true;
1214
1215 vht_cap->cap = (IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 |
1216 IEEE80211_VHT_CAP_SHORT_GI_80 |
1217 IEEE80211_VHT_CAP_RXSTBC_1 |
1218 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
1219 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
1220 3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT |
1221 7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
1222
1223 vht_cap->vht_mcs.rx_mcs_map =
1224 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 |
1225 IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 |
1226 IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 |
1227 IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 |
1228 IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 |
1229 IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 |
1230 IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 |
1231 IEEE80211_VHT_MCS_NOT_SUPPORTED << 14);
1232
1233 vht_cap->vht_mcs.rx_highest = cpu_to_le16(433);
1234 vht_cap->vht_mcs.tx_highest = vht_cap->vht_mcs.rx_highest;
1235
1236 vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map;
1237 }
1238
wcn36xx_init_ieee80211(struct wcn36xx * wcn)1239 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
1240 {
1241 static const u32 cipher_suites[] = {
1242 WLAN_CIPHER_SUITE_WEP40,
1243 WLAN_CIPHER_SUITE_WEP104,
1244 WLAN_CIPHER_SUITE_TKIP,
1245 WLAN_CIPHER_SUITE_CCMP,
1246 };
1247
1248 ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
1249 ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
1250 ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
1251 ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
1252 ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
1253 ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
1254 ieee80211_hw_set(wcn->hw, REPORTS_TX_ACK_STATUS);
1255
1256 wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1257 BIT(NL80211_IFTYPE_AP) |
1258 BIT(NL80211_IFTYPE_ADHOC) |
1259 BIT(NL80211_IFTYPE_MESH_POINT);
1260
1261 wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
1262 if (wcn->rf_id != RF_IRIS_WCN3620)
1263 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
1264
1265 if (wcn->rf_id == RF_IRIS_WCN3680)
1266 wcn36xx_set_ieee80211_vht_caps(&wcn_band_5ghz.vht_cap);
1267
1268 wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
1269 wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
1270
1271 wcn->hw->wiphy->cipher_suites = cipher_suites;
1272 wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1273
1274 #ifdef CONFIG_PM
1275 wcn->hw->wiphy->wowlan = &wowlan_support;
1276 #endif
1277
1278 wcn->hw->max_listen_interval = 200;
1279
1280 wcn->hw->queues = 4;
1281
1282 SET_IEEE80211_DEV(wcn->hw, wcn->dev);
1283
1284 wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
1285 wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
1286
1287 wiphy_ext_feature_set(wcn->hw->wiphy,
1288 NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1289
1290 return 0;
1291 }
1292
wcn36xx_platform_get_resources(struct wcn36xx * wcn,struct platform_device * pdev)1293 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
1294 struct platform_device *pdev)
1295 {
1296 struct device_node *mmio_node;
1297 struct device_node *iris_node;
1298 struct resource *res;
1299 int index;
1300 int ret;
1301
1302 /* Set TX IRQ */
1303 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "tx");
1304 if (!res) {
1305 wcn36xx_err("failed to get tx_irq\n");
1306 return -ENOENT;
1307 }
1308 wcn->tx_irq = res->start;
1309
1310 /* Set RX IRQ */
1311 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "rx");
1312 if (!res) {
1313 wcn36xx_err("failed to get rx_irq\n");
1314 return -ENOENT;
1315 }
1316 wcn->rx_irq = res->start;
1317
1318 /* Acquire SMSM tx enable handle */
1319 wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev,
1320 "tx-enable", &wcn->tx_enable_state_bit);
1321 if (IS_ERR(wcn->tx_enable_state)) {
1322 wcn36xx_err("failed to get tx-enable state\n");
1323 return PTR_ERR(wcn->tx_enable_state);
1324 }
1325
1326 /* Acquire SMSM tx rings empty handle */
1327 wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev,
1328 "tx-rings-empty", &wcn->tx_rings_empty_state_bit);
1329 if (IS_ERR(wcn->tx_rings_empty_state)) {
1330 wcn36xx_err("failed to get tx-rings-empty state\n");
1331 return PTR_ERR(wcn->tx_rings_empty_state);
1332 }
1333
1334 mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0);
1335 if (!mmio_node) {
1336 wcn36xx_err("failed to acquire qcom,mmio reference\n");
1337 return -EINVAL;
1338 }
1339
1340 wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto");
1341
1342 /* Map the CCU memory */
1343 index = of_property_match_string(mmio_node, "reg-names", "ccu");
1344 wcn->ccu_base = of_iomap(mmio_node, index);
1345 if (!wcn->ccu_base) {
1346 wcn36xx_err("failed to map ccu memory\n");
1347 ret = -ENOMEM;
1348 goto put_mmio_node;
1349 }
1350
1351 /* Map the DXE memory */
1352 index = of_property_match_string(mmio_node, "reg-names", "dxe");
1353 wcn->dxe_base = of_iomap(mmio_node, index);
1354 if (!wcn->dxe_base) {
1355 wcn36xx_err("failed to map dxe memory\n");
1356 ret = -ENOMEM;
1357 goto unmap_ccu;
1358 }
1359
1360 /* External RF module */
1361 iris_node = of_get_child_by_name(mmio_node, "iris");
1362 if (iris_node) {
1363 if (of_device_is_compatible(iris_node, "qcom,wcn3620"))
1364 wcn->rf_id = RF_IRIS_WCN3620;
1365 if (of_device_is_compatible(iris_node, "qcom,wcn3680"))
1366 wcn->rf_id = RF_IRIS_WCN3680;
1367 of_node_put(iris_node);
1368 }
1369
1370 of_node_put(mmio_node);
1371 return 0;
1372
1373 unmap_ccu:
1374 iounmap(wcn->ccu_base);
1375 put_mmio_node:
1376 of_node_put(mmio_node);
1377 return ret;
1378 }
1379
wcn36xx_probe(struct platform_device * pdev)1380 static int wcn36xx_probe(struct platform_device *pdev)
1381 {
1382 struct ieee80211_hw *hw;
1383 struct wcn36xx *wcn;
1384 void *wcnss;
1385 int ret;
1386 const u8 *addr;
1387
1388 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1389
1390 wcnss = dev_get_drvdata(pdev->dev.parent);
1391
1392 hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1393 if (!hw) {
1394 wcn36xx_err("failed to alloc hw\n");
1395 ret = -ENOMEM;
1396 goto out_err;
1397 }
1398 platform_set_drvdata(pdev, hw);
1399 wcn = hw->priv;
1400 wcn->hw = hw;
1401 wcn->dev = &pdev->dev;
1402 wcn->first_boot = true;
1403 mutex_init(&wcn->conf_mutex);
1404 mutex_init(&wcn->hal_mutex);
1405 mutex_init(&wcn->scan_lock);
1406
1407 wcn->hal_buf = devm_kmalloc(wcn->dev, WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
1408 if (!wcn->hal_buf) {
1409 ret = -ENOMEM;
1410 goto out_wq;
1411 }
1412
1413 ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32));
1414 if (ret < 0) {
1415 wcn36xx_err("failed to set DMA mask: %d\n", ret);
1416 goto out_wq;
1417 }
1418
1419 wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
1420 if (IS_ERR(wcn->smd_channel)) {
1421 wcn36xx_err("failed to open WLAN_CTRL channel\n");
1422 ret = PTR_ERR(wcn->smd_channel);
1423 goto out_wq;
1424 }
1425
1426 addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret);
1427 if (addr && ret != ETH_ALEN) {
1428 wcn36xx_err("invalid local-mac-address\n");
1429 ret = -EINVAL;
1430 goto out_destroy_ept;
1431 } else if (addr) {
1432 wcn36xx_info("mac address: %pM\n", addr);
1433 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1434 }
1435
1436 ret = wcn36xx_platform_get_resources(wcn, pdev);
1437 if (ret)
1438 goto out_destroy_ept;
1439
1440 wcn36xx_init_ieee80211(wcn);
1441 ret = ieee80211_register_hw(wcn->hw);
1442 if (ret)
1443 goto out_unmap;
1444
1445 return 0;
1446
1447 out_unmap:
1448 iounmap(wcn->ccu_base);
1449 iounmap(wcn->dxe_base);
1450 out_destroy_ept:
1451 rpmsg_destroy_ept(wcn->smd_channel);
1452 out_wq:
1453 ieee80211_free_hw(hw);
1454 out_err:
1455 return ret;
1456 }
1457
wcn36xx_remove(struct platform_device * pdev)1458 static int wcn36xx_remove(struct platform_device *pdev)
1459 {
1460 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1461 struct wcn36xx *wcn = hw->priv;
1462 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1463
1464 release_firmware(wcn->nv);
1465
1466 ieee80211_unregister_hw(hw);
1467
1468 qcom_smem_state_put(wcn->tx_enable_state);
1469 qcom_smem_state_put(wcn->tx_rings_empty_state);
1470
1471 rpmsg_destroy_ept(wcn->smd_channel);
1472
1473 iounmap(wcn->dxe_base);
1474 iounmap(wcn->ccu_base);
1475
1476 mutex_destroy(&wcn->hal_mutex);
1477 ieee80211_free_hw(hw);
1478
1479 return 0;
1480 }
1481
1482 static const struct of_device_id wcn36xx_of_match[] = {
1483 { .compatible = "qcom,wcnss-wlan" },
1484 {}
1485 };
1486 MODULE_DEVICE_TABLE(of, wcn36xx_of_match);
1487
1488 static struct platform_driver wcn36xx_driver = {
1489 .probe = wcn36xx_probe,
1490 .remove = wcn36xx_remove,
1491 .driver = {
1492 .name = "wcn36xx",
1493 .of_match_table = wcn36xx_of_match,
1494 },
1495 };
1496
1497 module_platform_driver(wcn36xx_driver);
1498
1499 MODULE_LICENSE("Dual BSD/GPL");
1500 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1501 MODULE_FIRMWARE(WLAN_NV_FILE);
1502