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 <net/ipv6.h>
29 #include "wcn36xx.h"
30 #include "testmode.h"
31
32 unsigned int wcn36xx_dbg_mask;
33 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
34 MODULE_PARM_DESC(debug_mask, "Debugging mask");
35
36 #define CHAN2G(_freq, _idx) { \
37 .band = NL80211_BAND_2GHZ, \
38 .center_freq = (_freq), \
39 .hw_value = (_idx), \
40 .max_power = 25, \
41 }
42
43 #define CHAN5G(_freq, _idx, _phy_val) { \
44 .band = NL80211_BAND_5GHZ, \
45 .center_freq = (_freq), \
46 .hw_value = (_phy_val) << HW_VALUE_PHY_SHIFT | HW_VALUE_CHANNEL(_idx), \
47 .max_power = 25, \
48 }
49
50 /* The wcn firmware expects channel values to matching
51 * their mnemonic values. So use these for .hw_value. */
52 static struct ieee80211_channel wcn_2ghz_channels[] = {
53 CHAN2G(2412, 1), /* Channel 1 */
54 CHAN2G(2417, 2), /* Channel 2 */
55 CHAN2G(2422, 3), /* Channel 3 */
56 CHAN2G(2427, 4), /* Channel 4 */
57 CHAN2G(2432, 5), /* Channel 5 */
58 CHAN2G(2437, 6), /* Channel 6 */
59 CHAN2G(2442, 7), /* Channel 7 */
60 CHAN2G(2447, 8), /* Channel 8 */
61 CHAN2G(2452, 9), /* Channel 9 */
62 CHAN2G(2457, 10), /* Channel 10 */
63 CHAN2G(2462, 11), /* Channel 11 */
64 CHAN2G(2467, 12), /* Channel 12 */
65 CHAN2G(2472, 13), /* Channel 13 */
66 CHAN2G(2484, 14) /* Channel 14 */
67
68 };
69
70 static struct ieee80211_channel wcn_5ghz_channels[] = {
71 CHAN5G(5180, 36, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
72 CHAN5G(5200, 40, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
73 CHAN5G(5220, 44, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
74 CHAN5G(5240, 48, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
75 CHAN5G(5260, 52, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
76 CHAN5G(5280, 56, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
77 CHAN5G(5300, 60, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
78 CHAN5G(5320, 64, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
79 CHAN5G(5500, 100, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
80 CHAN5G(5520, 104, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
81 CHAN5G(5540, 108, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
82 CHAN5G(5560, 112, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
83 CHAN5G(5580, 116, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
84 CHAN5G(5600, 120, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
85 CHAN5G(5620, 124, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
86 CHAN5G(5640, 128, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
87 CHAN5G(5660, 132, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
88 CHAN5G(5700, 140, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
89 CHAN5G(5745, 149, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
90 CHAN5G(5765, 153, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
91 CHAN5G(5785, 157, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
92 CHAN5G(5805, 161, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
93 CHAN5G(5825, 165, 0)
94 };
95
96 #define RATE(_bitrate, _hw_rate, _flags) { \
97 .bitrate = (_bitrate), \
98 .flags = (_flags), \
99 .hw_value = (_hw_rate), \
100 .hw_value_short = (_hw_rate) \
101 }
102
103 static struct ieee80211_rate wcn_2ghz_rates[] = {
104 RATE(10, HW_RATE_INDEX_1MBPS, 0),
105 RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
106 RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
107 RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
108 RATE(60, HW_RATE_INDEX_6MBPS, 0),
109 RATE(90, HW_RATE_INDEX_9MBPS, 0),
110 RATE(120, HW_RATE_INDEX_12MBPS, 0),
111 RATE(180, HW_RATE_INDEX_18MBPS, 0),
112 RATE(240, HW_RATE_INDEX_24MBPS, 0),
113 RATE(360, HW_RATE_INDEX_36MBPS, 0),
114 RATE(480, HW_RATE_INDEX_48MBPS, 0),
115 RATE(540, HW_RATE_INDEX_54MBPS, 0)
116 };
117
118 static struct ieee80211_rate wcn_5ghz_rates[] = {
119 RATE(60, HW_RATE_INDEX_6MBPS, 0),
120 RATE(90, HW_RATE_INDEX_9MBPS, 0),
121 RATE(120, HW_RATE_INDEX_12MBPS, 0),
122 RATE(180, HW_RATE_INDEX_18MBPS, 0),
123 RATE(240, HW_RATE_INDEX_24MBPS, 0),
124 RATE(360, HW_RATE_INDEX_36MBPS, 0),
125 RATE(480, HW_RATE_INDEX_48MBPS, 0),
126 RATE(540, HW_RATE_INDEX_54MBPS, 0)
127 };
128
129 static struct ieee80211_supported_band wcn_band_2ghz = {
130 .channels = wcn_2ghz_channels,
131 .n_channels = ARRAY_SIZE(wcn_2ghz_channels),
132 .bitrates = wcn_2ghz_rates,
133 .n_bitrates = ARRAY_SIZE(wcn_2ghz_rates),
134 .ht_cap = {
135 .cap = IEEE80211_HT_CAP_GRN_FLD |
136 IEEE80211_HT_CAP_SGI_20 |
137 IEEE80211_HT_CAP_DSSSCCK40 |
138 IEEE80211_HT_CAP_LSIG_TXOP_PROT |
139 IEEE80211_HT_CAP_SGI_40 |
140 IEEE80211_HT_CAP_SUP_WIDTH_20_40,
141 .ht_supported = true,
142 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
143 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
144 .mcs = {
145 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
146 .rx_highest = cpu_to_le16(72),
147 .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
148 }
149 }
150 };
151
152 static struct ieee80211_supported_band wcn_band_5ghz = {
153 .channels = wcn_5ghz_channels,
154 .n_channels = ARRAY_SIZE(wcn_5ghz_channels),
155 .bitrates = wcn_5ghz_rates,
156 .n_bitrates = ARRAY_SIZE(wcn_5ghz_rates),
157 .ht_cap = {
158 .cap = IEEE80211_HT_CAP_GRN_FLD |
159 IEEE80211_HT_CAP_SGI_20 |
160 IEEE80211_HT_CAP_DSSSCCK40 |
161 IEEE80211_HT_CAP_LSIG_TXOP_PROT |
162 IEEE80211_HT_CAP_SGI_40 |
163 IEEE80211_HT_CAP_SUP_WIDTH_20_40,
164 .ht_supported = true,
165 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
166 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
167 .mcs = {
168 .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
169 .rx_highest = cpu_to_le16(150),
170 .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
171 }
172 }
173 };
174
175 #ifdef CONFIG_PM
176
177 static const struct wiphy_wowlan_support wowlan_support = {
178 .flags = WIPHY_WOWLAN_ANY |
179 WIPHY_WOWLAN_MAGIC_PKT |
180 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY
181 };
182
183 #endif
184
get_sta_index(struct ieee80211_vif * vif,struct wcn36xx_sta * sta_priv)185 static inline u8 get_sta_index(struct ieee80211_vif *vif,
186 struct wcn36xx_sta *sta_priv)
187 {
188 return NL80211_IFTYPE_STATION == vif->type ?
189 sta_priv->bss_sta_index :
190 sta_priv->sta_index;
191 }
192
193 static const char * const wcn36xx_caps_names[] = {
194 "MCC", /* 0 */
195 "P2P", /* 1 */
196 "DOT11AC", /* 2 */
197 "SLM_SESSIONIZATION", /* 3 */
198 "DOT11AC_OPMODE", /* 4 */
199 "SAP32STA", /* 5 */
200 "TDLS", /* 6 */
201 "P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */
202 "WLANACTIVE_OFFLOAD", /* 8 */
203 "BEACON_OFFLOAD", /* 9 */
204 "SCAN_OFFLOAD", /* 10 */
205 "ROAM_OFFLOAD", /* 11 */
206 "BCN_MISS_OFFLOAD", /* 12 */
207 "STA_POWERSAVE", /* 13 */
208 "STA_ADVANCED_PWRSAVE", /* 14 */
209 "AP_UAPSD", /* 15 */
210 "AP_DFS", /* 16 */
211 "BLOCKACK", /* 17 */
212 "PHY_ERR", /* 18 */
213 "BCN_FILTER", /* 19 */
214 "RTT", /* 20 */
215 "RATECTRL", /* 21 */
216 "WOW", /* 22 */
217 "WLAN_ROAM_SCAN_OFFLOAD", /* 23 */
218 "SPECULATIVE_PS_POLL", /* 24 */
219 "SCAN_SCH", /* 25 */
220 "IBSS_HEARTBEAT_OFFLOAD", /* 26 */
221 "WLAN_SCAN_OFFLOAD", /* 27 */
222 "WLAN_PERIODIC_TX_PTRN", /* 28 */
223 "ADVANCE_TDLS", /* 29 */
224 "BATCH_SCAN", /* 30 */
225 "FW_IN_TX_PATH", /* 31 */
226 "EXTENDED_NSOFFLOAD_SLOT", /* 32 */
227 "CH_SWITCH_V1", /* 33 */
228 "HT40_OBSS_SCAN", /* 34 */
229 "UPDATE_CHANNEL_LIST", /* 35 */
230 "WLAN_MCADDR_FLT", /* 36 */
231 "WLAN_CH144", /* 37 */
232 "NAN", /* 38 */
233 "TDLS_SCAN_COEXISTENCE", /* 39 */
234 "LINK_LAYER_STATS_MEAS", /* 40 */
235 "MU_MIMO", /* 41 */
236 "EXTENDED_SCAN", /* 42 */
237 "DYNAMIC_WMM_PS", /* 43 */
238 "MAC_SPOOFED_SCAN", /* 44 */
239 "BMU_ERROR_GENERIC_RECOVERY", /* 45 */
240 "DISA", /* 46 */
241 "FW_STATS", /* 47 */
242 "WPS_PRBRSP_TMPL", /* 48 */
243 "BCN_IE_FLT_DELTA", /* 49 */
244 "TDLS_OFF_CHANNEL", /* 51 */
245 "RTT3", /* 52 */
246 "MGMT_FRAME_LOGGING", /* 53 */
247 "ENHANCED_TXBD_COMPLETION", /* 54 */
248 "LOGGING_ENHANCEMENT", /* 55 */
249 "EXT_SCAN_ENHANCED", /* 56 */
250 "MEMORY_DUMP_SUPPORTED", /* 57 */
251 "PER_PKT_STATS_SUPPORTED", /* 58 */
252 "EXT_LL_STAT", /* 60 */
253 "WIFI_CONFIG", /* 61 */
254 "ANTENNA_DIVERSITY_SELECTION", /* 62 */
255 };
256
wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)257 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)
258 {
259 if (x >= ARRAY_SIZE(wcn36xx_caps_names))
260 return "UNKNOWN";
261 return wcn36xx_caps_names[x];
262 }
263
wcn36xx_feat_caps_info(struct wcn36xx * wcn)264 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
265 {
266 int i;
267
268 for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
269 if (get_feat_caps(wcn->fw_feat_caps, i))
270 wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n", wcn36xx_get_cap_name(i));
271 }
272 }
273
wcn36xx_start(struct ieee80211_hw * hw)274 static int wcn36xx_start(struct ieee80211_hw *hw)
275 {
276 struct wcn36xx *wcn = hw->priv;
277 int ret;
278
279 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
280
281 /* SMD initialization */
282 ret = wcn36xx_smd_open(wcn);
283 if (ret) {
284 wcn36xx_err("Failed to open smd channel: %d\n", ret);
285 goto out_err;
286 }
287
288 /* Allocate memory pools for Mgmt BD headers and Data BD headers */
289 ret = wcn36xx_dxe_allocate_mem_pools(wcn);
290 if (ret) {
291 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
292 goto out_smd_close;
293 }
294
295 ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
296 if (ret) {
297 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
298 goto out_free_dxe_pool;
299 }
300
301 ret = wcn36xx_smd_load_nv(wcn);
302 if (ret) {
303 wcn36xx_err("Failed to push NV to chip\n");
304 goto out_free_dxe_ctl;
305 }
306
307 ret = wcn36xx_smd_start(wcn);
308 if (ret) {
309 wcn36xx_err("Failed to start chip\n");
310 goto out_free_dxe_ctl;
311 }
312
313 if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
314 ret = wcn36xx_smd_feature_caps_exchange(wcn);
315 if (ret)
316 wcn36xx_warn("Exchange feature caps failed\n");
317 else
318 wcn36xx_feat_caps_info(wcn);
319 }
320
321 /* DMA channel initialization */
322 ret = wcn36xx_dxe_init(wcn);
323 if (ret) {
324 wcn36xx_err("DXE init failed\n");
325 goto out_smd_stop;
326 }
327
328 wcn36xx_debugfs_init(wcn);
329
330 INIT_LIST_HEAD(&wcn->vif_list);
331 spin_lock_init(&wcn->dxe_lock);
332
333 return 0;
334
335 out_smd_stop:
336 wcn36xx_smd_stop(wcn);
337 out_free_dxe_ctl:
338 wcn36xx_dxe_free_ctl_blks(wcn);
339 out_free_dxe_pool:
340 wcn36xx_dxe_free_mem_pools(wcn);
341 out_smd_close:
342 wcn36xx_smd_close(wcn);
343 out_err:
344 return ret;
345 }
346
wcn36xx_stop(struct ieee80211_hw * hw)347 static void wcn36xx_stop(struct ieee80211_hw *hw)
348 {
349 struct wcn36xx *wcn = hw->priv;
350
351 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
352
353 mutex_lock(&wcn->scan_lock);
354 if (wcn->scan_req) {
355 struct cfg80211_scan_info scan_info = {
356 .aborted = true,
357 };
358
359 ieee80211_scan_completed(wcn->hw, &scan_info);
360 }
361 wcn->scan_req = NULL;
362 mutex_unlock(&wcn->scan_lock);
363
364 wcn36xx_debugfs_exit(wcn);
365 wcn36xx_smd_stop(wcn);
366 wcn36xx_dxe_deinit(wcn);
367 wcn36xx_smd_close(wcn);
368
369 wcn36xx_dxe_free_mem_pools(wcn);
370 wcn36xx_dxe_free_ctl_blks(wcn);
371 }
372
wcn36xx_change_ps(struct wcn36xx * wcn,bool enable)373 static void wcn36xx_change_ps(struct wcn36xx *wcn, bool enable)
374 {
375 struct ieee80211_vif *vif = NULL;
376 struct wcn36xx_vif *tmp;
377
378 list_for_each_entry(tmp, &wcn->vif_list, list) {
379 vif = wcn36xx_priv_to_vif(tmp);
380 if (enable && !wcn->sw_scan) {
381 if (vif->bss_conf.ps) /* ps allowed ? */
382 wcn36xx_pmc_enter_bmps_state(wcn, vif);
383 } else {
384 wcn36xx_pmc_exit_bmps_state(wcn, vif);
385 }
386 }
387 }
388
wcn36xx_change_opchannel(struct wcn36xx * wcn,int ch)389 static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch)
390 {
391 struct ieee80211_vif *vif = NULL;
392 struct wcn36xx_vif *tmp;
393
394 list_for_each_entry(tmp, &wcn->vif_list, list) {
395 vif = wcn36xx_priv_to_vif(tmp);
396 wcn36xx_smd_switch_channel(wcn, vif, ch);
397 }
398 }
399
wcn36xx_config(struct ieee80211_hw * hw,u32 changed)400 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
401 {
402 struct wcn36xx *wcn = hw->priv;
403 int ret;
404
405 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
406
407 mutex_lock(&wcn->conf_mutex);
408
409 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
410 int ch = WCN36XX_HW_CHANNEL(wcn);
411 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
412 ch);
413
414 if (wcn->sw_scan_opchannel == ch && wcn->sw_scan_channel) {
415 /* If channel is the initial operating channel, we may
416 * want to receive/transmit regular data packets, then
417 * simply stop the scan session and exit PS mode.
418 */
419 if (wcn->sw_scan_channel)
420 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
421 if (wcn->sw_scan_init) {
422 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
423 wcn->sw_scan_vif);
424 }
425 } else if (wcn->sw_scan) {
426 /* A scan is ongoing, do not change the operating
427 * channel, but start a scan session on the channel.
428 */
429 if (wcn->sw_scan_channel)
430 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
431 if (!wcn->sw_scan_init) {
432 /* This can fail if we are unable to notify the
433 * operating channel.
434 */
435 ret = wcn36xx_smd_init_scan(wcn,
436 HAL_SYS_MODE_SCAN,
437 wcn->sw_scan_vif);
438 if (ret) {
439 mutex_unlock(&wcn->conf_mutex);
440 return -EIO;
441 }
442 }
443 wcn36xx_smd_start_scan(wcn, ch);
444 } else {
445 wcn36xx_change_opchannel(wcn, ch);
446 }
447 }
448
449 if (changed & IEEE80211_CONF_CHANGE_PS)
450 wcn36xx_change_ps(wcn, hw->conf.flags & IEEE80211_CONF_PS);
451
452 mutex_unlock(&wcn->conf_mutex);
453
454 return 0;
455 }
456
wcn36xx_configure_filter(struct ieee80211_hw * hw,unsigned int changed,unsigned int * total,u64 multicast)457 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
458 unsigned int changed,
459 unsigned int *total, u64 multicast)
460 {
461 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
462 struct wcn36xx *wcn = hw->priv;
463 struct wcn36xx_vif *tmp;
464 struct ieee80211_vif *vif = NULL;
465
466 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
467
468 mutex_lock(&wcn->conf_mutex);
469
470 *total &= FIF_ALLMULTI;
471
472 fp = (void *)(unsigned long)multicast;
473 list_for_each_entry(tmp, &wcn->vif_list, list) {
474 vif = wcn36xx_priv_to_vif(tmp);
475
476 /* FW handles MC filtering only when connected as STA */
477 if (*total & FIF_ALLMULTI)
478 wcn36xx_smd_set_mc_list(wcn, vif, NULL);
479 else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc)
480 wcn36xx_smd_set_mc_list(wcn, vif, fp);
481 }
482
483 mutex_unlock(&wcn->conf_mutex);
484 kfree(fp);
485 }
486
wcn36xx_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)487 static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw,
488 struct netdev_hw_addr_list *mc_list)
489 {
490 struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
491 struct netdev_hw_addr *ha;
492
493 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n");
494 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
495 if (!fp) {
496 wcn36xx_err("Out of memory setting filters.\n");
497 return 0;
498 }
499
500 fp->mc_addr_count = 0;
501 /* update multicast filtering parameters */
502 if (netdev_hw_addr_list_count(mc_list) <=
503 WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) {
504 netdev_hw_addr_list_for_each(ha, mc_list) {
505 memcpy(fp->mc_addr[fp->mc_addr_count],
506 ha->addr, ETH_ALEN);
507 fp->mc_addr_count++;
508 }
509 }
510
511 return (u64)(unsigned long)fp;
512 }
513
wcn36xx_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)514 static void wcn36xx_tx(struct ieee80211_hw *hw,
515 struct ieee80211_tx_control *control,
516 struct sk_buff *skb)
517 {
518 struct wcn36xx *wcn = hw->priv;
519 struct wcn36xx_sta *sta_priv = NULL;
520
521 if (control->sta)
522 sta_priv = wcn36xx_sta_to_priv(control->sta);
523
524 if (wcn36xx_start_tx(wcn, sta_priv, skb))
525 ieee80211_free_txskb(wcn->hw, skb);
526 }
527
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)528 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
529 struct ieee80211_vif *vif,
530 struct ieee80211_sta *sta,
531 struct ieee80211_key_conf *key_conf)
532 {
533 struct wcn36xx *wcn = hw->priv;
534 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
535 struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL;
536 int ret = 0;
537 u8 key[WLAN_MAX_KEY_LEN];
538
539 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
540 wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
541 cmd, key_conf->cipher, key_conf->keyidx,
542 key_conf->keylen, key_conf->flags);
543 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
544 key_conf->key,
545 key_conf->keylen);
546
547 mutex_lock(&wcn->conf_mutex);
548
549 switch (key_conf->cipher) {
550 case WLAN_CIPHER_SUITE_WEP40:
551 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
552 break;
553 case WLAN_CIPHER_SUITE_WEP104:
554 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104;
555 break;
556 case WLAN_CIPHER_SUITE_CCMP:
557 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
558 break;
559 case WLAN_CIPHER_SUITE_TKIP:
560 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
561 break;
562 default:
563 wcn36xx_err("Unsupported key type 0x%x\n",
564 key_conf->cipher);
565 ret = -EOPNOTSUPP;
566 goto out;
567 }
568
569 switch (cmd) {
570 case SET_KEY:
571 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
572 /*
573 * Supplicant is sending key in the wrong order:
574 * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
575 * but HW expects it to be in the order as described in
576 * IEEE 802.11 spec (see chapter 11.7) like this:
577 * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
578 */
579 memcpy(key, key_conf->key, 16);
580 memcpy(key + 16, key_conf->key + 24, 8);
581 memcpy(key + 24, key_conf->key + 16, 8);
582 } else {
583 memcpy(key, key_conf->key, key_conf->keylen);
584 }
585
586 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
587 sta_priv->is_data_encrypted = true;
588 /* Reconfigure bss with encrypt_type */
589 if (NL80211_IFTYPE_STATION == vif->type) {
590 wcn36xx_smd_config_bss(wcn,
591 vif,
592 sta,
593 sta->addr,
594 true);
595 wcn36xx_smd_config_sta(wcn, vif, sta);
596 }
597
598 wcn36xx_smd_set_stakey(wcn,
599 vif_priv->encrypt_type,
600 key_conf->keyidx,
601 key_conf->keylen,
602 key,
603 get_sta_index(vif, sta_priv));
604 } else {
605 wcn36xx_smd_set_bsskey(wcn,
606 vif_priv->encrypt_type,
607 vif_priv->bss_index,
608 key_conf->keyidx,
609 key_conf->keylen,
610 key);
611
612 if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
613 (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
614 list_for_each_entry(sta_priv,
615 &vif_priv->sta_list, list) {
616 sta_priv->is_data_encrypted = true;
617 wcn36xx_smd_set_stakey(wcn,
618 vif_priv->encrypt_type,
619 key_conf->keyidx,
620 key_conf->keylen,
621 key,
622 get_sta_index(vif, sta_priv));
623 }
624 }
625 }
626 break;
627 case DISABLE_KEY:
628 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
629 if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX)
630 wcn36xx_smd_remove_bsskey(wcn,
631 vif_priv->encrypt_type,
632 vif_priv->bss_index,
633 key_conf->keyidx);
634
635 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
636 } else {
637 sta_priv->is_data_encrypted = false;
638 /* do not remove key if disassociated */
639 if (sta_priv->aid)
640 wcn36xx_smd_remove_stakey(wcn,
641 vif_priv->encrypt_type,
642 key_conf->keyidx,
643 get_sta_index(vif, sta_priv));
644 }
645 break;
646 default:
647 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
648 ret = -EOPNOTSUPP;
649 goto out;
650 }
651
652 out:
653 mutex_unlock(&wcn->conf_mutex);
654
655 return ret;
656 }
657
wcn36xx_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)658 static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
659 struct ieee80211_vif *vif,
660 struct ieee80211_scan_request *hw_req)
661 {
662 struct wcn36xx *wcn = hw->priv;
663 int i;
664
665 if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
666 /* fallback to mac80211 software scan */
667 return 1;
668 }
669
670 /* For unknown reason, the hardware offloaded scan only works with
671 * 2.4Ghz channels, fallback to software scan in other cases.
672 */
673 for (i = 0; i < hw_req->req.n_channels; i++) {
674 if (hw_req->req.channels[i]->band != NL80211_BAND_2GHZ)
675 return 1;
676 }
677
678 mutex_lock(&wcn->scan_lock);
679 if (wcn->scan_req) {
680 mutex_unlock(&wcn->scan_lock);
681 return -EBUSY;
682 }
683
684 wcn->scan_aborted = false;
685 wcn->scan_req = &hw_req->req;
686
687 mutex_unlock(&wcn->scan_lock);
688
689 wcn36xx_smd_update_channel_list(wcn, &hw_req->req);
690 return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req);
691 }
692
wcn36xx_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)693 static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
694 struct ieee80211_vif *vif)
695 {
696 struct wcn36xx *wcn = hw->priv;
697
698 mutex_lock(&wcn->scan_lock);
699 wcn->scan_aborted = true;
700 mutex_unlock(&wcn->scan_lock);
701
702 if (get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
703 /* ieee80211_scan_completed will be called on FW scan
704 * indication */
705 wcn36xx_smd_stop_hw_scan(wcn);
706 }
707 }
708
wcn36xx_sw_scan_start(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const u8 * mac_addr)709 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
710 struct ieee80211_vif *vif,
711 const u8 *mac_addr)
712 {
713 struct wcn36xx *wcn = hw->priv;
714 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
715
716 wcn->sw_scan = true;
717 wcn->sw_scan_vif = vif;
718 wcn->sw_scan_channel = 0;
719 if (vif_priv->sta_assoc)
720 wcn->sw_scan_opchannel = WCN36XX_HW_CHANNEL(wcn);
721 else
722 wcn->sw_scan_opchannel = 0;
723 }
724
wcn36xx_sw_scan_complete(struct ieee80211_hw * hw,struct ieee80211_vif * vif)725 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
726 struct ieee80211_vif *vif)
727 {
728 struct wcn36xx *wcn = hw->priv;
729
730 /* ensure that any scan session is finished */
731 if (wcn->sw_scan_channel)
732 wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
733 if (wcn->sw_scan_init) {
734 wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
735 wcn->sw_scan_vif);
736 }
737 wcn->sw_scan = false;
738 wcn->sw_scan_opchannel = 0;
739 }
740
wcn36xx_update_allowed_rates(struct ieee80211_sta * sta,enum nl80211_band band)741 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
742 enum nl80211_band band)
743 {
744 int i, size;
745 u16 *rates_table;
746 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
747 u32 rates = sta->supp_rates[band];
748
749 memset(&sta_priv->supported_rates, 0,
750 sizeof(sta_priv->supported_rates));
751 sta_priv->supported_rates.op_rate_mode = STA_11n;
752
753 size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
754 rates_table = sta_priv->supported_rates.dsss_rates;
755 if (band == NL80211_BAND_2GHZ) {
756 for (i = 0; i < size; i++) {
757 if (rates & 0x01) {
758 rates_table[i] = wcn_2ghz_rates[i].hw_value;
759 rates = rates >> 1;
760 }
761 }
762 }
763
764 size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
765 rates_table = sta_priv->supported_rates.ofdm_rates;
766 for (i = 0; i < size; i++) {
767 if (rates & 0x01) {
768 rates_table[i] = wcn_5ghz_rates[i].hw_value;
769 rates = rates >> 1;
770 }
771 }
772
773 if (sta->ht_cap.ht_supported) {
774 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
775 sizeof(sta_priv->supported_rates.supported_mcs_set));
776 memcpy(sta_priv->supported_rates.supported_mcs_set,
777 sta->ht_cap.mcs.rx_mask,
778 sizeof(sta->ht_cap.mcs.rx_mask));
779 }
780
781 if (sta->vht_cap.vht_supported) {
782 sta_priv->supported_rates.op_rate_mode = STA_11ac;
783 sta_priv->supported_rates.vht_rx_mcs_map =
784 sta->vht_cap.vht_mcs.rx_mcs_map;
785 sta_priv->supported_rates.vht_tx_mcs_map =
786 sta->vht_cap.vht_mcs.tx_mcs_map;
787 }
788 }
789
wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates * rates)790 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
791 {
792 u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
793 HW_RATE_INDEX_6MBPS,
794 HW_RATE_INDEX_9MBPS,
795 HW_RATE_INDEX_12MBPS,
796 HW_RATE_INDEX_18MBPS,
797 HW_RATE_INDEX_24MBPS,
798 HW_RATE_INDEX_36MBPS,
799 HW_RATE_INDEX_48MBPS,
800 HW_RATE_INDEX_54MBPS
801 };
802 u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
803 HW_RATE_INDEX_1MBPS,
804 HW_RATE_INDEX_2MBPS,
805 HW_RATE_INDEX_5_5MBPS,
806 HW_RATE_INDEX_11MBPS
807 };
808
809 rates->op_rate_mode = STA_11n;
810 memcpy(rates->dsss_rates, dsss_rates,
811 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
812 memcpy(rates->ofdm_rates, ofdm_rates,
813 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
814 rates->supported_mcs_set[0] = 0xFF;
815 }
816
wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 * rates)817 void wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 *rates)
818 {
819 rates->op_rate_mode = STA_11ac;
820 rates->vht_rx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
821 rates->vht_tx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
822 }
823
wcn36xx_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u32 changed)824 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
825 struct ieee80211_vif *vif,
826 struct ieee80211_bss_conf *bss_conf,
827 u32 changed)
828 {
829 struct wcn36xx *wcn = hw->priv;
830 struct sk_buff *skb = NULL;
831 u16 tim_off, tim_len;
832 enum wcn36xx_hal_link_state link_state;
833 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
834
835 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
836 vif, changed);
837
838 mutex_lock(&wcn->conf_mutex);
839
840 if (changed & BSS_CHANGED_BEACON_INFO) {
841 wcn36xx_dbg(WCN36XX_DBG_MAC,
842 "mac bss changed dtim period %d\n",
843 bss_conf->dtim_period);
844
845 vif_priv->dtim_period = bss_conf->dtim_period;
846 }
847
848 if (changed & BSS_CHANGED_BSSID) {
849 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
850 bss_conf->bssid);
851
852 if (!is_zero_ether_addr(bss_conf->bssid)) {
853 vif_priv->is_joining = true;
854 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
855 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
856 WCN36XX_HAL_LINK_PREASSOC_STATE);
857 wcn36xx_smd_join(wcn, bss_conf->bssid,
858 vif->addr, WCN36XX_HW_CHANNEL(wcn));
859 wcn36xx_smd_config_bss(wcn, vif, NULL,
860 bss_conf->bssid, false);
861 } else {
862 vif_priv->is_joining = false;
863 wcn36xx_smd_delete_bss(wcn, vif);
864 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
865 WCN36XX_HAL_LINK_IDLE_STATE);
866 vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
867 }
868 }
869
870 if (changed & BSS_CHANGED_SSID) {
871 wcn36xx_dbg(WCN36XX_DBG_MAC,
872 "mac bss changed ssid\n");
873 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
874 bss_conf->ssid, bss_conf->ssid_len);
875
876 vif_priv->ssid.length = bss_conf->ssid_len;
877 memcpy(&vif_priv->ssid.ssid,
878 bss_conf->ssid,
879 bss_conf->ssid_len);
880 }
881
882 if (changed & BSS_CHANGED_ASSOC) {
883 vif_priv->is_joining = false;
884 if (bss_conf->assoc) {
885 struct ieee80211_sta *sta;
886 struct wcn36xx_sta *sta_priv;
887
888 wcn36xx_dbg(WCN36XX_DBG_MAC,
889 "mac assoc bss %pM vif %pM AID=%d\n",
890 bss_conf->bssid,
891 vif->addr,
892 bss_conf->aid);
893
894 vif_priv->sta_assoc = true;
895
896 /*
897 * Holding conf_mutex ensures mutal exclusion with
898 * wcn36xx_sta_remove() and as such ensures that sta
899 * won't be freed while we're operating on it. As such
900 * we do not need to hold the rcu_read_lock().
901 */
902 sta = ieee80211_find_sta(vif, bss_conf->bssid);
903 if (!sta) {
904 wcn36xx_err("sta %pM is not found\n",
905 bss_conf->bssid);
906 goto out;
907 }
908 sta_priv = wcn36xx_sta_to_priv(sta);
909
910 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
911
912 wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
913 vif->addr,
914 WCN36XX_HAL_LINK_POSTASSOC_STATE);
915 wcn36xx_smd_config_bss(wcn, vif, sta,
916 bss_conf->bssid,
917 true);
918 sta_priv->aid = bss_conf->aid;
919 /*
920 * config_sta must be called from because this is the
921 * place where AID is available.
922 */
923 wcn36xx_smd_config_sta(wcn, vif, sta);
924 wcn36xx_enable_keep_alive_null_packet(wcn, vif);
925 } else {
926 wcn36xx_dbg(WCN36XX_DBG_MAC,
927 "disassociated bss %pM vif %pM AID=%d\n",
928 bss_conf->bssid,
929 vif->addr,
930 bss_conf->aid);
931 vif_priv->sta_assoc = false;
932 wcn36xx_smd_set_link_st(wcn,
933 bss_conf->bssid,
934 vif->addr,
935 WCN36XX_HAL_LINK_IDLE_STATE);
936 }
937 }
938
939 if (changed & BSS_CHANGED_AP_PROBE_RESP) {
940 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
941 skb = ieee80211_proberesp_get(hw, vif);
942 if (!skb) {
943 wcn36xx_err("failed to alloc probereq skb\n");
944 goto out;
945 }
946
947 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
948 dev_kfree_skb(skb);
949 }
950
951 if (changed & BSS_CHANGED_BEACON_ENABLED ||
952 changed & BSS_CHANGED_BEACON) {
953 wcn36xx_dbg(WCN36XX_DBG_MAC,
954 "mac bss changed beacon enabled %d\n",
955 bss_conf->enable_beacon);
956
957 if (bss_conf->enable_beacon) {
958 vif_priv->dtim_period = bss_conf->dtim_period;
959 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
960 wcn36xx_smd_config_bss(wcn, vif, NULL,
961 vif->addr, false);
962 skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
963 &tim_len);
964 if (!skb) {
965 wcn36xx_err("failed to alloc beacon skb\n");
966 goto out;
967 }
968 wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
969 dev_kfree_skb(skb);
970
971 if (vif->type == NL80211_IFTYPE_ADHOC ||
972 vif->type == NL80211_IFTYPE_MESH_POINT)
973 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
974 else
975 link_state = WCN36XX_HAL_LINK_AP_STATE;
976
977 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
978 link_state);
979 } else {
980 wcn36xx_smd_delete_bss(wcn, vif);
981 wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
982 WCN36XX_HAL_LINK_IDLE_STATE);
983 }
984 }
985 out:
986
987 mutex_unlock(&wcn->conf_mutex);
988 }
989
990 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
wcn36xx_set_rts_threshold(struct ieee80211_hw * hw,u32 value)991 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
992 {
993 struct wcn36xx *wcn = hw->priv;
994 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
995
996 mutex_lock(&wcn->conf_mutex);
997 wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
998 mutex_unlock(&wcn->conf_mutex);
999
1000 return 0;
1001 }
1002
wcn36xx_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1003 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
1004 struct ieee80211_vif *vif)
1005 {
1006 struct wcn36xx *wcn = hw->priv;
1007 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1008 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
1009
1010 mutex_lock(&wcn->conf_mutex);
1011
1012 list_del(&vif_priv->list);
1013 wcn36xx_smd_delete_sta_self(wcn, vif->addr);
1014
1015 mutex_unlock(&wcn->conf_mutex);
1016 }
1017
wcn36xx_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1018 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
1019 struct ieee80211_vif *vif)
1020 {
1021 struct wcn36xx *wcn = hw->priv;
1022 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1023
1024 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
1025 vif, vif->type);
1026
1027 if (!(NL80211_IFTYPE_STATION == vif->type ||
1028 NL80211_IFTYPE_AP == vif->type ||
1029 NL80211_IFTYPE_ADHOC == vif->type ||
1030 NL80211_IFTYPE_MESH_POINT == vif->type)) {
1031 wcn36xx_warn("Unsupported interface type requested: %d\n",
1032 vif->type);
1033 return -EOPNOTSUPP;
1034 }
1035
1036 mutex_lock(&wcn->conf_mutex);
1037
1038 vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
1039 INIT_LIST_HEAD(&vif_priv->sta_list);
1040 list_add(&vif_priv->list, &wcn->vif_list);
1041 wcn36xx_smd_add_sta_self(wcn, vif);
1042
1043 mutex_unlock(&wcn->conf_mutex);
1044
1045 return 0;
1046 }
1047
wcn36xx_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1048 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1049 struct ieee80211_sta *sta)
1050 {
1051 struct wcn36xx *wcn = hw->priv;
1052 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1053 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1054 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
1055 vif, sta->addr);
1056
1057 mutex_lock(&wcn->conf_mutex);
1058
1059 spin_lock_init(&sta_priv->ampdu_lock);
1060 sta_priv->vif = vif_priv;
1061 list_add(&sta_priv->list, &vif_priv->sta_list);
1062
1063 /*
1064 * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
1065 * at this stage AID is not available yet.
1066 */
1067 if (NL80211_IFTYPE_STATION != vif->type) {
1068 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
1069 sta_priv->aid = sta->aid;
1070 wcn36xx_smd_config_sta(wcn, vif, sta);
1071 }
1072
1073 mutex_unlock(&wcn->conf_mutex);
1074
1075 return 0;
1076 }
1077
wcn36xx_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1078 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
1079 struct ieee80211_vif *vif,
1080 struct ieee80211_sta *sta)
1081 {
1082 struct wcn36xx *wcn = hw->priv;
1083 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1084
1085 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
1086 vif, sta->addr, sta_priv->sta_index);
1087
1088 mutex_lock(&wcn->conf_mutex);
1089
1090 list_del(&sta_priv->list);
1091 wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
1092 sta_priv->vif = NULL;
1093
1094 mutex_unlock(&wcn->conf_mutex);
1095
1096 return 0;
1097 }
1098
1099 #ifdef CONFIG_PM
1100
wcn36xx_get_first_assoc_vif(struct wcn36xx * wcn)1101 static struct ieee80211_vif *wcn36xx_get_first_assoc_vif(struct wcn36xx *wcn)
1102 {
1103 struct wcn36xx_vif *vif_priv = NULL;
1104 struct ieee80211_vif *vif = NULL;
1105
1106 list_for_each_entry(vif_priv, &wcn->vif_list, list) {
1107 if (vif_priv->sta_assoc) {
1108 vif = wcn36xx_priv_to_vif(vif_priv);
1109 break;
1110 }
1111 }
1112 return vif;
1113 }
1114
wcn36xx_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wow)1115 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
1116 {
1117 struct wcn36xx *wcn = hw->priv;
1118 struct ieee80211_vif *vif = NULL;
1119 int ret = 0;
1120
1121 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
1122
1123 mutex_lock(&wcn->conf_mutex);
1124
1125 vif = wcn36xx_get_first_assoc_vif(wcn);
1126 if (vif) {
1127 ret = wcn36xx_smd_arp_offload(wcn, vif, true);
1128 if (ret)
1129 goto out;
1130 ret = wcn36xx_smd_ipv6_ns_offload(wcn, vif, true);
1131 if (ret)
1132 goto out;
1133 ret = wcn36xx_smd_gtk_offload(wcn, vif, true);
1134 if (ret)
1135 goto out;
1136 ret = wcn36xx_smd_set_power_params(wcn, true);
1137 if (ret)
1138 goto out;
1139 ret = wcn36xx_smd_wlan_host_suspend_ind(wcn);
1140 }
1141
1142 /* Disable IRQ, we don't want to handle any packet before mac80211 is
1143 * resumed and ready to receive packets.
1144 */
1145 disable_irq(wcn->tx_irq);
1146 disable_irq(wcn->rx_irq);
1147
1148 out:
1149 mutex_unlock(&wcn->conf_mutex);
1150 return ret;
1151 }
1152
wcn36xx_resume(struct ieee80211_hw * hw)1153 static int wcn36xx_resume(struct ieee80211_hw *hw)
1154 {
1155 struct wcn36xx *wcn = hw->priv;
1156 struct ieee80211_vif *vif = NULL;
1157
1158 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
1159
1160 mutex_lock(&wcn->conf_mutex);
1161 vif = wcn36xx_get_first_assoc_vif(wcn);
1162 if (vif) {
1163 wcn36xx_smd_host_resume(wcn);
1164 wcn36xx_smd_set_power_params(wcn, false);
1165 wcn36xx_smd_gtk_offload_get_info(wcn, vif);
1166 wcn36xx_smd_gtk_offload(wcn, vif, false);
1167 wcn36xx_smd_ipv6_ns_offload(wcn, vif, false);
1168 wcn36xx_smd_arp_offload(wcn, vif, false);
1169 }
1170
1171 enable_irq(wcn->tx_irq);
1172 enable_irq(wcn->rx_irq);
1173
1174 mutex_unlock(&wcn->conf_mutex);
1175
1176 return 0;
1177 }
1178
wcn36xx_set_rekey_data(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_gtk_rekey_data * data)1179 static void wcn36xx_set_rekey_data(struct ieee80211_hw *hw,
1180 struct ieee80211_vif *vif,
1181 struct cfg80211_gtk_rekey_data *data)
1182 {
1183 struct wcn36xx *wcn = hw->priv;
1184 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1185
1186 mutex_lock(&wcn->conf_mutex);
1187
1188 memcpy(vif_priv->rekey_data.kek, data->kek, NL80211_KEK_LEN);
1189 memcpy(vif_priv->rekey_data.kck, data->kck, NL80211_KCK_LEN);
1190 vif_priv->rekey_data.replay_ctr =
1191 cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr));
1192 vif_priv->rekey_data.valid = true;
1193
1194 mutex_unlock(&wcn->conf_mutex);
1195 }
1196
1197 #endif
1198
wcn36xx_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)1199 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
1200 struct ieee80211_vif *vif,
1201 struct ieee80211_ampdu_params *params)
1202 {
1203 struct wcn36xx *wcn = hw->priv;
1204 struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta);
1205 struct ieee80211_sta *sta = params->sta;
1206 enum ieee80211_ampdu_mlme_action action = params->action;
1207 u16 tid = params->tid;
1208 u16 *ssn = ¶ms->ssn;
1209 int ret = 0;
1210 u8 session;
1211
1212 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
1213 action, tid);
1214
1215 mutex_lock(&wcn->conf_mutex);
1216
1217 switch (action) {
1218 case IEEE80211_AMPDU_RX_START:
1219 sta_priv->tid = tid;
1220 session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
1221 get_sta_index(vif, sta_priv));
1222 wcn36xx_smd_add_ba(wcn, session);
1223 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv), tid,
1224 session);
1225 break;
1226 case IEEE80211_AMPDU_RX_STOP:
1227 wcn36xx_smd_del_ba(wcn, tid, 0, get_sta_index(vif, sta_priv));
1228 break;
1229 case IEEE80211_AMPDU_TX_START:
1230 spin_lock_bh(&sta_priv->ampdu_lock);
1231 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
1232 spin_unlock_bh(&sta_priv->ampdu_lock);
1233
1234 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
1235 break;
1236 case IEEE80211_AMPDU_TX_OPERATIONAL:
1237 spin_lock_bh(&sta_priv->ampdu_lock);
1238 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
1239 spin_unlock_bh(&sta_priv->ampdu_lock);
1240
1241 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
1242 get_sta_index(vif, sta_priv));
1243 break;
1244 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1245 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1246 case IEEE80211_AMPDU_TX_STOP_CONT:
1247 spin_lock_bh(&sta_priv->ampdu_lock);
1248 sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
1249 spin_unlock_bh(&sta_priv->ampdu_lock);
1250
1251 wcn36xx_smd_del_ba(wcn, tid, 1, get_sta_index(vif, sta_priv));
1252 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1253 break;
1254 default:
1255 wcn36xx_err("Unknown AMPDU action\n");
1256 }
1257
1258 mutex_unlock(&wcn->conf_mutex);
1259
1260 return ret;
1261 }
1262
1263 #if IS_ENABLED(CONFIG_IPV6)
wcn36xx_ipv6_addr_change(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct inet6_dev * idev)1264 static void wcn36xx_ipv6_addr_change(struct ieee80211_hw *hw,
1265 struct ieee80211_vif *vif,
1266 struct inet6_dev *idev)
1267 {
1268 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1269 struct inet6_ifaddr *ifa;
1270 int idx = 0;
1271
1272 memset(vif_priv->tentative_addrs, 0, sizeof(vif_priv->tentative_addrs));
1273
1274 read_lock_bh(&idev->lock);
1275 list_for_each_entry(ifa, &idev->addr_list, if_list) {
1276 vif_priv->target_ipv6_addrs[idx] = ifa->addr;
1277 if (ifa->flags & IFA_F_TENTATIVE)
1278 __set_bit(idx, vif_priv->tentative_addrs);
1279 idx++;
1280 if (idx >= WCN36XX_HAL_IPV6_OFFLOAD_ADDR_MAX)
1281 break;
1282 wcn36xx_dbg(WCN36XX_DBG_MAC, "%pI6 %s\n", &ifa->addr,
1283 (ifa->flags & IFA_F_TENTATIVE) ? "tentative" : NULL);
1284 }
1285 read_unlock_bh(&idev->lock);
1286
1287 vif_priv->num_target_ipv6_addrs = idx;
1288 }
1289 #endif
1290
1291 static const struct ieee80211_ops wcn36xx_ops = {
1292 .start = wcn36xx_start,
1293 .stop = wcn36xx_stop,
1294 .add_interface = wcn36xx_add_interface,
1295 .remove_interface = wcn36xx_remove_interface,
1296 #ifdef CONFIG_PM
1297 .suspend = wcn36xx_suspend,
1298 .resume = wcn36xx_resume,
1299 .set_rekey_data = wcn36xx_set_rekey_data,
1300 #endif
1301 .config = wcn36xx_config,
1302 .prepare_multicast = wcn36xx_prepare_multicast,
1303 .configure_filter = wcn36xx_configure_filter,
1304 .tx = wcn36xx_tx,
1305 .set_key = wcn36xx_set_key,
1306 .hw_scan = wcn36xx_hw_scan,
1307 .cancel_hw_scan = wcn36xx_cancel_hw_scan,
1308 .sw_scan_start = wcn36xx_sw_scan_start,
1309 .sw_scan_complete = wcn36xx_sw_scan_complete,
1310 .bss_info_changed = wcn36xx_bss_info_changed,
1311 .set_rts_threshold = wcn36xx_set_rts_threshold,
1312 .sta_add = wcn36xx_sta_add,
1313 .sta_remove = wcn36xx_sta_remove,
1314 .ampdu_action = wcn36xx_ampdu_action,
1315 #if IS_ENABLED(CONFIG_IPV6)
1316 .ipv6_addr_change = wcn36xx_ipv6_addr_change,
1317 #endif
1318
1319 CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)
1320 };
1321
1322 static void
wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap * vht_cap)1323 wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap *vht_cap)
1324 {
1325 vht_cap->vht_supported = true;
1326
1327 vht_cap->cap = (IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 |
1328 IEEE80211_VHT_CAP_SHORT_GI_80 |
1329 IEEE80211_VHT_CAP_RXSTBC_1 |
1330 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
1331 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
1332 3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT |
1333 7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
1334
1335 vht_cap->vht_mcs.rx_mcs_map =
1336 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 |
1337 IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 |
1338 IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 |
1339 IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 |
1340 IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 |
1341 IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 |
1342 IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 |
1343 IEEE80211_VHT_MCS_NOT_SUPPORTED << 14);
1344
1345 vht_cap->vht_mcs.rx_highest = cpu_to_le16(433);
1346 vht_cap->vht_mcs.tx_highest = vht_cap->vht_mcs.rx_highest;
1347
1348 vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map;
1349 }
1350
wcn36xx_init_ieee80211(struct wcn36xx * wcn)1351 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
1352 {
1353 static const u32 cipher_suites[] = {
1354 WLAN_CIPHER_SUITE_WEP40,
1355 WLAN_CIPHER_SUITE_WEP104,
1356 WLAN_CIPHER_SUITE_TKIP,
1357 WLAN_CIPHER_SUITE_CCMP,
1358 };
1359
1360 ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
1361 ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
1362 ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
1363 ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
1364 ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
1365 ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
1366 ieee80211_hw_set(wcn->hw, REPORTS_TX_ACK_STATUS);
1367
1368 wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1369 BIT(NL80211_IFTYPE_AP) |
1370 BIT(NL80211_IFTYPE_ADHOC) |
1371 BIT(NL80211_IFTYPE_MESH_POINT);
1372
1373 wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
1374 if (wcn->rf_id != RF_IRIS_WCN3620)
1375 wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
1376
1377 if (wcn->rf_id == RF_IRIS_WCN3680)
1378 wcn36xx_set_ieee80211_vht_caps(&wcn_band_5ghz.vht_cap);
1379
1380 wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
1381 wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
1382
1383 wcn->hw->wiphy->cipher_suites = cipher_suites;
1384 wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1385
1386 #ifdef CONFIG_PM
1387 wcn->hw->wiphy->wowlan = &wowlan_support;
1388 #endif
1389
1390 wcn->hw->max_listen_interval = 200;
1391
1392 wcn->hw->queues = 4;
1393
1394 SET_IEEE80211_DEV(wcn->hw, wcn->dev);
1395
1396 wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
1397 wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
1398
1399 wiphy_ext_feature_set(wcn->hw->wiphy,
1400 NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1401
1402 return 0;
1403 }
1404
wcn36xx_platform_get_resources(struct wcn36xx * wcn,struct platform_device * pdev)1405 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
1406 struct platform_device *pdev)
1407 {
1408 struct device_node *mmio_node;
1409 struct device_node *iris_node;
1410 struct resource *res;
1411 int index;
1412 int ret;
1413
1414 /* Set TX IRQ */
1415 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "tx");
1416 if (!res) {
1417 wcn36xx_err("failed to get tx_irq\n");
1418 return -ENOENT;
1419 }
1420 wcn->tx_irq = res->start;
1421
1422 /* Set RX IRQ */
1423 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "rx");
1424 if (!res) {
1425 wcn36xx_err("failed to get rx_irq\n");
1426 return -ENOENT;
1427 }
1428 wcn->rx_irq = res->start;
1429
1430 /* Acquire SMSM tx enable handle */
1431 wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev,
1432 "tx-enable", &wcn->tx_enable_state_bit);
1433 if (IS_ERR(wcn->tx_enable_state)) {
1434 wcn36xx_err("failed to get tx-enable state\n");
1435 return PTR_ERR(wcn->tx_enable_state);
1436 }
1437
1438 /* Acquire SMSM tx rings empty handle */
1439 wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev,
1440 "tx-rings-empty", &wcn->tx_rings_empty_state_bit);
1441 if (IS_ERR(wcn->tx_rings_empty_state)) {
1442 wcn36xx_err("failed to get tx-rings-empty state\n");
1443 return PTR_ERR(wcn->tx_rings_empty_state);
1444 }
1445
1446 mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0);
1447 if (!mmio_node) {
1448 wcn36xx_err("failed to acquire qcom,mmio reference\n");
1449 return -EINVAL;
1450 }
1451
1452 wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto");
1453
1454 /* Map the CCU memory */
1455 index = of_property_match_string(mmio_node, "reg-names", "ccu");
1456 wcn->ccu_base = of_iomap(mmio_node, index);
1457 if (!wcn->ccu_base) {
1458 wcn36xx_err("failed to map ccu memory\n");
1459 ret = -ENOMEM;
1460 goto put_mmio_node;
1461 }
1462
1463 /* Map the DXE memory */
1464 index = of_property_match_string(mmio_node, "reg-names", "dxe");
1465 wcn->dxe_base = of_iomap(mmio_node, index);
1466 if (!wcn->dxe_base) {
1467 wcn36xx_err("failed to map dxe memory\n");
1468 ret = -ENOMEM;
1469 goto unmap_ccu;
1470 }
1471
1472 /* External RF module */
1473 iris_node = of_get_child_by_name(mmio_node, "iris");
1474 if (iris_node) {
1475 if (of_device_is_compatible(iris_node, "qcom,wcn3620"))
1476 wcn->rf_id = RF_IRIS_WCN3620;
1477 if (of_device_is_compatible(iris_node, "qcom,wcn3660") ||
1478 of_device_is_compatible(iris_node, "qcom,wcn3660b"))
1479 wcn->rf_id = RF_IRIS_WCN3660;
1480 if (of_device_is_compatible(iris_node, "qcom,wcn3680"))
1481 wcn->rf_id = RF_IRIS_WCN3680;
1482 of_node_put(iris_node);
1483 }
1484
1485 of_node_put(mmio_node);
1486 return 0;
1487
1488 unmap_ccu:
1489 iounmap(wcn->ccu_base);
1490 put_mmio_node:
1491 of_node_put(mmio_node);
1492 return ret;
1493 }
1494
wcn36xx_probe(struct platform_device * pdev)1495 static int wcn36xx_probe(struct platform_device *pdev)
1496 {
1497 struct ieee80211_hw *hw;
1498 struct wcn36xx *wcn;
1499 void *wcnss;
1500 int ret;
1501 const u8 *addr;
1502
1503 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1504
1505 wcnss = dev_get_drvdata(pdev->dev.parent);
1506
1507 hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1508 if (!hw) {
1509 wcn36xx_err("failed to alloc hw\n");
1510 ret = -ENOMEM;
1511 goto out_err;
1512 }
1513 platform_set_drvdata(pdev, hw);
1514 wcn = hw->priv;
1515 wcn->hw = hw;
1516 wcn->dev = &pdev->dev;
1517 wcn->first_boot = true;
1518 mutex_init(&wcn->conf_mutex);
1519 mutex_init(&wcn->hal_mutex);
1520 mutex_init(&wcn->scan_lock);
1521
1522 wcn->hal_buf = devm_kmalloc(wcn->dev, WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
1523 if (!wcn->hal_buf) {
1524 ret = -ENOMEM;
1525 goto out_wq;
1526 }
1527
1528 ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32));
1529 if (ret < 0) {
1530 wcn36xx_err("failed to set DMA mask: %d\n", ret);
1531 goto out_wq;
1532 }
1533
1534 wcn->nv_file = WLAN_NV_FILE;
1535 ret = of_property_read_string(wcn->dev->parent->of_node, "firmware-name", &wcn->nv_file);
1536 if (ret < 0 && ret != -EINVAL) {
1537 wcn36xx_err("failed to read \"firmware-name\" property: %d\n", ret);
1538 goto out_wq;
1539 }
1540
1541 wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
1542 if (IS_ERR(wcn->smd_channel)) {
1543 wcn36xx_err("failed to open WLAN_CTRL channel\n");
1544 ret = PTR_ERR(wcn->smd_channel);
1545 goto out_wq;
1546 }
1547
1548 addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret);
1549 if (addr && ret != ETH_ALEN) {
1550 wcn36xx_err("invalid local-mac-address\n");
1551 ret = -EINVAL;
1552 goto out_destroy_ept;
1553 } else if (addr) {
1554 wcn36xx_info("mac address: %pM\n", addr);
1555 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1556 }
1557
1558 ret = wcn36xx_platform_get_resources(wcn, pdev);
1559 if (ret)
1560 goto out_destroy_ept;
1561
1562 wcn36xx_init_ieee80211(wcn);
1563 ret = ieee80211_register_hw(wcn->hw);
1564 if (ret)
1565 goto out_unmap;
1566
1567 return 0;
1568
1569 out_unmap:
1570 iounmap(wcn->ccu_base);
1571 iounmap(wcn->dxe_base);
1572 out_destroy_ept:
1573 rpmsg_destroy_ept(wcn->smd_channel);
1574 out_wq:
1575 ieee80211_free_hw(hw);
1576 out_err:
1577 return ret;
1578 }
1579
wcn36xx_remove(struct platform_device * pdev)1580 static int wcn36xx_remove(struct platform_device *pdev)
1581 {
1582 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1583 struct wcn36xx *wcn = hw->priv;
1584 wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1585
1586 release_firmware(wcn->nv);
1587
1588 ieee80211_unregister_hw(hw);
1589
1590 qcom_smem_state_put(wcn->tx_enable_state);
1591 qcom_smem_state_put(wcn->tx_rings_empty_state);
1592
1593 rpmsg_destroy_ept(wcn->smd_channel);
1594
1595 iounmap(wcn->dxe_base);
1596 iounmap(wcn->ccu_base);
1597
1598 mutex_destroy(&wcn->hal_mutex);
1599 ieee80211_free_hw(hw);
1600
1601 return 0;
1602 }
1603
1604 static const struct of_device_id wcn36xx_of_match[] = {
1605 { .compatible = "qcom,wcnss-wlan" },
1606 {}
1607 };
1608 MODULE_DEVICE_TABLE(of, wcn36xx_of_match);
1609
1610 static struct platform_driver wcn36xx_driver = {
1611 .probe = wcn36xx_probe,
1612 .remove = wcn36xx_remove,
1613 .driver = {
1614 .name = "wcn36xx",
1615 .of_match_table = wcn36xx_of_match,
1616 },
1617 };
1618
1619 module_platform_driver(wcn36xx_driver);
1620
1621 MODULE_LICENSE("Dual BSD/GPL");
1622 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1623 MODULE_FIRMWARE(WLAN_NV_FILE);
1624