1
2
3
4
5#include "main.h"
6#include "fw.h"
7#include "wow.h"
8#include "reg.h"
9#include "debug.h"
10#include "mac.h"
11#include "ps.h"
12
13static void rtw_wow_show_wakeup_reason(struct rtw_dev *rtwdev)
14{
15 u8 reason;
16
17 reason = rtw_read8(rtwdev, REG_WOWLAN_WAKE_REASON);
18
19 if (reason == RTW_WOW_RSN_RX_DEAUTH)
20 rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx deauth\n");
21 else if (reason == RTW_WOW_RSN_DISCONNECT)
22 rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: AP is off\n");
23 else if (reason == RTW_WOW_RSN_RX_MAGIC_PKT)
24 rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx magic packet\n");
25 else if (reason == RTW_WOW_RSN_RX_GTK_REKEY)
26 rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx gtk rekey\n");
27 else if (reason == RTW_WOW_RSN_RX_PTK_REKEY)
28 rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx ptk rekey\n");
29 else if (reason == RTW_WOW_RSN_RX_PATTERN_MATCH)
30 rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: Rx pattern match packet\n");
31 else if (reason == RTW_WOW_RSN_RX_NLO)
32 rtw_dbg(rtwdev, RTW_DBG_WOW, "Rx NLO\n");
33 else
34 rtw_warn(rtwdev, "Unknown wakeup reason %x\n", reason);
35}
36
37static void rtw_wow_pattern_write_cam(struct rtw_dev *rtwdev, u8 addr,
38 u32 wdata)
39{
40 rtw_write32(rtwdev, REG_WKFMCAM_RWD, wdata);
41 rtw_write32(rtwdev, REG_WKFMCAM_CMD, BIT_WKFCAM_POLLING_V1 |
42 BIT_WKFCAM_WE | BIT_WKFCAM_ADDR_V2(addr));
43
44 if (!check_hw_ready(rtwdev, REG_WKFMCAM_CMD, BIT_WKFCAM_POLLING_V1, 0))
45 rtw_err(rtwdev, "failed to write pattern cam\n");
46}
47
48static void rtw_wow_pattern_write_cam_ent(struct rtw_dev *rtwdev, u8 id,
49 struct rtw_wow_pattern *rtw_pattern)
50{
51 int i;
52 u8 addr;
53 u32 wdata;
54
55 for (i = 0; i < RTW_MAX_PATTERN_MASK_SIZE / 4; i++) {
56 addr = (id << 3) + i;
57 wdata = rtw_pattern->mask[i * 4];
58 wdata |= rtw_pattern->mask[i * 4 + 1] << 8;
59 wdata |= rtw_pattern->mask[i * 4 + 2] << 16;
60 wdata |= rtw_pattern->mask[i * 4 + 3] << 24;
61 rtw_wow_pattern_write_cam(rtwdev, addr, wdata);
62 }
63
64 wdata = rtw_pattern->crc;
65 addr = (id << 3) + RTW_MAX_PATTERN_MASK_SIZE / 4;
66
67 switch (rtw_pattern->type) {
68 case RTW_PATTERN_BROADCAST:
69 wdata |= BIT_WKFMCAM_BC | BIT_WKFMCAM_VALID;
70 break;
71 case RTW_PATTERN_MULTICAST:
72 wdata |= BIT_WKFMCAM_MC | BIT_WKFMCAM_VALID;
73 break;
74 case RTW_PATTERN_UNICAST:
75 wdata |= BIT_WKFMCAM_UC | BIT_WKFMCAM_VALID;
76 break;
77 default:
78 break;
79 }
80 rtw_wow_pattern_write_cam(rtwdev, addr, wdata);
81}
82
83
84static u16 __rtw_cal_crc16(u8 data, u16 crc)
85{
86 u8 shift_in, data_bit;
87 u8 crc_bit4, crc_bit11, crc_bit15;
88 u16 crc_result;
89 int index;
90
91 for (index = 0; index < 8; index++) {
92 crc_bit15 = ((crc & BIT(15)) ? 1 : 0);
93 data_bit = (data & (BIT(0) << index) ? 1 : 0);
94 shift_in = crc_bit15 ^ data_bit;
95
96 crc_result = crc << 1;
97
98 if (shift_in == 0)
99 crc_result &= (~BIT(0));
100 else
101 crc_result |= BIT(0);
102
103 crc_bit11 = ((crc & BIT(11)) ? 1 : 0) ^ shift_in;
104
105 if (crc_bit11 == 0)
106 crc_result &= (~BIT(12));
107 else
108 crc_result |= BIT(12);
109
110 crc_bit4 = ((crc & BIT(4)) ? 1 : 0) ^ shift_in;
111
112 if (crc_bit4 == 0)
113 crc_result &= (~BIT(5));
114 else
115 crc_result |= BIT(5);
116
117 crc = crc_result;
118 }
119 return crc;
120}
121
122static u16 rtw_calc_crc(u8 *pdata, int length)
123{
124 u16 crc = 0xffff;
125 int i;
126
127 for (i = 0; i < length; i++)
128 crc = __rtw_cal_crc16(pdata[i], crc);
129
130
131 return ~crc;
132}
133
134static void rtw_wow_pattern_generate(struct rtw_dev *rtwdev,
135 struct rtw_vif *rtwvif,
136 const struct cfg80211_pkt_pattern *pkt_pattern,
137 struct rtw_wow_pattern *rtw_pattern)
138{
139 const u8 *mask;
140 const u8 *pattern;
141 u8 mask_hw[RTW_MAX_PATTERN_MASK_SIZE] = {0};
142 u8 content[RTW_MAX_PATTERN_SIZE] = {0};
143 u8 mac_addr[ETH_ALEN] = {0};
144 u8 mask_len;
145 u16 count;
146 int len;
147 int i;
148
149 pattern = pkt_pattern->pattern;
150 len = pkt_pattern->pattern_len;
151 mask = pkt_pattern->mask;
152
153 ether_addr_copy(mac_addr, rtwvif->mac_addr);
154 memset(rtw_pattern, 0, sizeof(*rtw_pattern));
155
156 mask_len = DIV_ROUND_UP(len, 8);
157
158 if (is_broadcast_ether_addr(pattern))
159 rtw_pattern->type = RTW_PATTERN_BROADCAST;
160 else if (is_multicast_ether_addr(pattern))
161 rtw_pattern->type = RTW_PATTERN_MULTICAST;
162 else if (ether_addr_equal(pattern, mac_addr))
163 rtw_pattern->type = RTW_PATTERN_UNICAST;
164 else
165 rtw_pattern->type = RTW_PATTERN_INVALID;
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187 for (i = 0; i < mask_len - 1; i++) {
188 mask_hw[i] = u8_get_bits(mask[i], GENMASK(7, 6));
189 mask_hw[i] |= u8_get_bits(mask[i + 1], GENMASK(5, 0)) << 2;
190 }
191 mask_hw[i] = u8_get_bits(mask[i], GENMASK(7, 6));
192
193
194 mask_hw[0] &= (~GENMASK(5, 0));
195
196 memcpy(rtw_pattern->mask, mask_hw, RTW_MAX_PATTERN_MASK_SIZE);
197
198
199
200
201
202 count = 0;
203 for (i = 12; i < len; i++) {
204 if ((mask[i / 8] >> (i % 8)) & 0x01) {
205 content[count] = pattern[i];
206 count++;
207 }
208 }
209
210 rtw_pattern->crc = rtw_calc_crc(content, count);
211}
212
213static void rtw_wow_pattern_clear_cam(struct rtw_dev *rtwdev)
214{
215 bool ret;
216
217 rtw_write32(rtwdev, REG_WKFMCAM_CMD, BIT_WKFCAM_POLLING_V1 |
218 BIT_WKFCAM_CLR_V1);
219
220 ret = check_hw_ready(rtwdev, REG_WKFMCAM_CMD, BIT_WKFCAM_POLLING_V1, 0);
221 if (!ret)
222 rtw_err(rtwdev, "failed to clean pattern cam\n");
223}
224
225static void rtw_wow_pattern_write(struct rtw_dev *rtwdev)
226{
227 struct rtw_wow_param *rtw_wow = &rtwdev->wow;
228 struct rtw_wow_pattern *rtw_pattern = rtw_wow->patterns;
229 int i = 0;
230
231 for (i = 0; i < rtw_wow->pattern_cnt; i++)
232 rtw_wow_pattern_write_cam_ent(rtwdev, i, rtw_pattern + i);
233}
234
235static void rtw_wow_pattern_clear(struct rtw_dev *rtwdev)
236{
237 struct rtw_wow_param *rtw_wow = &rtwdev->wow;
238
239 rtw_wow_pattern_clear_cam(rtwdev);
240
241 rtw_wow->pattern_cnt = 0;
242 memset(rtw_wow->patterns, 0, sizeof(rtw_wow->patterns));
243}
244
245static void rtw_wow_bb_stop(struct rtw_dev *rtwdev)
246{
247 struct rtw_wow_param *rtw_wow = &rtwdev->wow;
248
249
250 msleep(100);
251
252 if (!rtw_read32_mask(rtwdev, REG_BCNQ_INFO, BIT_MGQ_CPU_EMPTY))
253 rtw_warn(rtwdev, "Wrong status of MGQ_CPU empty!\n");
254
255 rtw_wow->txpause = rtw_read8(rtwdev, REG_TXPAUSE);
256 rtw_write8(rtwdev, REG_TXPAUSE, 0xff);
257 rtw_write8_clr(rtwdev, REG_SYS_FUNC_EN, BIT_FEN_BB_RSTB);
258}
259
260static void rtw_wow_bb_start(struct rtw_dev *rtwdev)
261{
262 struct rtw_wow_param *rtw_wow = &rtwdev->wow;
263
264 rtw_write8_set(rtwdev, REG_SYS_FUNC_EN, BIT_FEN_BB_RSTB);
265 rtw_write8(rtwdev, REG_TXPAUSE, rtw_wow->txpause);
266}
267
268static void rtw_wow_rx_dma_stop(struct rtw_dev *rtwdev)
269{
270
271 msleep(100);
272
273 rtw_write32_set(rtwdev, REG_RXPKT_NUM, BIT_RW_RELEASE);
274
275 if (!check_hw_ready(rtwdev, REG_RXPKT_NUM, BIT_RXDMA_IDLE, 1))
276 rtw_err(rtwdev, "failed to stop rx dma\n");
277}
278
279static void rtw_wow_rx_dma_start(struct rtw_dev *rtwdev)
280{
281 rtw_write32_clr(rtwdev, REG_RXPKT_NUM, BIT_RW_RELEASE);
282}
283
284static int rtw_wow_check_fw_status(struct rtw_dev *rtwdev, bool wow_enable)
285{
286
287 msleep(100);
288
289 if (wow_enable) {
290 if (rtw_read8(rtwdev, REG_WOWLAN_WAKE_REASON))
291 goto wow_fail;
292 } else {
293 if (rtw_read32_mask(rtwdev, REG_FE1IMR, BIT_FS_RXDONE) ||
294 rtw_read32_mask(rtwdev, REG_RXPKT_NUM, BIT_RW_RELEASE))
295 goto wow_fail;
296 }
297
298 return 0;
299
300wow_fail:
301 rtw_err(rtwdev, "failed to check wow status %s\n",
302 wow_enable ? "enabled" : "disabled");
303 return -EBUSY;
304}
305
306static void rtw_wow_fw_security_type_iter(struct ieee80211_hw *hw,
307 struct ieee80211_vif *vif,
308 struct ieee80211_sta *sta,
309 struct ieee80211_key_conf *key,
310 void *data)
311{
312 struct rtw_fw_key_type_iter_data *iter_data = data;
313 struct rtw_dev *rtwdev = hw->priv;
314 u8 hw_key_type;
315
316 if (vif != rtwdev->wow.wow_vif)
317 return;
318
319 switch (key->cipher) {
320 case WLAN_CIPHER_SUITE_WEP40:
321 hw_key_type = RTW_CAM_WEP40;
322 break;
323 case WLAN_CIPHER_SUITE_WEP104:
324 hw_key_type = RTW_CAM_WEP104;
325 break;
326 case WLAN_CIPHER_SUITE_TKIP:
327 hw_key_type = RTW_CAM_TKIP;
328 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
329 break;
330 case WLAN_CIPHER_SUITE_CCMP:
331 hw_key_type = RTW_CAM_AES;
332 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
333 break;
334 default:
335 rtw_err(rtwdev, "Unsupported key type for wowlan mode\n");
336 hw_key_type = 0;
337 break;
338 }
339
340 if (sta)
341 iter_data->pairwise_key_type = hw_key_type;
342 else
343 iter_data->group_key_type = hw_key_type;
344}
345
346static void rtw_wow_fw_security_type(struct rtw_dev *rtwdev)
347{
348 struct rtw_fw_key_type_iter_data data = {};
349 struct ieee80211_vif *wow_vif = rtwdev->wow.wow_vif;
350
351 data.rtwdev = rtwdev;
352 rtw_iterate_keys(rtwdev, wow_vif,
353 rtw_wow_fw_security_type_iter, &data);
354 rtw_fw_set_aoac_global_info_cmd(rtwdev, data.pairwise_key_type,
355 data.group_key_type);
356}
357
358static int rtw_wow_fw_start(struct rtw_dev *rtwdev)
359{
360 if (rtw_wow_mgd_linked(rtwdev)) {
361 rtw_send_rsvd_page_h2c(rtwdev);
362 rtw_wow_pattern_write(rtwdev);
363 rtw_wow_fw_security_type(rtwdev);
364 rtw_fw_set_disconnect_decision_cmd(rtwdev, true);
365 rtw_fw_set_keep_alive_cmd(rtwdev, true);
366 } else if (rtw_wow_no_link(rtwdev)) {
367 rtw_fw_set_nlo_info(rtwdev, true);
368 rtw_fw_update_pkt_probe_req(rtwdev, NULL);
369 rtw_fw_channel_switch(rtwdev, true);
370 }
371
372 rtw_fw_set_wowlan_ctrl_cmd(rtwdev, true);
373 rtw_fw_set_remote_wake_ctrl_cmd(rtwdev, true);
374
375 return rtw_wow_check_fw_status(rtwdev, true);
376}
377
378static int rtw_wow_fw_stop(struct rtw_dev *rtwdev)
379{
380 if (rtw_wow_mgd_linked(rtwdev)) {
381 rtw_fw_set_disconnect_decision_cmd(rtwdev, false);
382 rtw_fw_set_keep_alive_cmd(rtwdev, false);
383 rtw_wow_pattern_clear(rtwdev);
384 } else if (rtw_wow_no_link(rtwdev)) {
385 rtw_fw_channel_switch(rtwdev, false);
386 rtw_fw_set_nlo_info(rtwdev, false);
387 }
388
389 rtw_fw_set_wowlan_ctrl_cmd(rtwdev, false);
390 rtw_fw_set_remote_wake_ctrl_cmd(rtwdev, false);
391
392 return rtw_wow_check_fw_status(rtwdev, false);
393}
394
395static void rtw_wow_avoid_reset_mac(struct rtw_dev *rtwdev)
396{
397
398
399
400
401
402 switch (rtw_hci_type(rtwdev)) {
403 case RTW_HCI_TYPE_PCIE:
404 case RTW_HCI_TYPE_USB:
405 rtw_write8(rtwdev, REG_RSV_CTRL, BIT_WLOCK_1C_B6);
406 rtw_write8(rtwdev, REG_RSV_CTRL,
407 BIT_WLOCK_1C_B6 | BIT_R_DIS_PRST);
408 break;
409 default:
410 rtw_warn(rtwdev, "Unsupported hci type to disable reset MAC\n");
411 break;
412 }
413}
414
415static void rtw_wow_fw_media_status_iter(void *data, struct ieee80211_sta *sta)
416{
417 struct rtw_sta_info *si = (struct rtw_sta_info *)sta->drv_priv;
418 struct rtw_fw_media_status_iter_data *iter_data = data;
419 struct rtw_dev *rtwdev = iter_data->rtwdev;
420
421 rtw_fw_media_status_report(rtwdev, si->mac_id, iter_data->connect);
422}
423
424static void rtw_wow_fw_media_status(struct rtw_dev *rtwdev, bool connect)
425{
426 struct rtw_fw_media_status_iter_data data;
427
428 data.rtwdev = rtwdev;
429 data.connect = connect;
430
431 rtw_iterate_stas_atomic(rtwdev, rtw_wow_fw_media_status_iter, &data);
432}
433
434static void rtw_wow_config_pno_rsvd_page(struct rtw_dev *rtwdev,
435 struct rtw_vif *rtwvif)
436{
437 rtw_add_rsvd_page_pno(rtwdev, rtwvif);
438}
439
440static void rtw_wow_config_linked_rsvd_page(struct rtw_dev *rtwdev,
441 struct rtw_vif *rtwvif)
442{
443 rtw_add_rsvd_page_sta(rtwdev, rtwvif);
444}
445
446static void rtw_wow_config_rsvd_page(struct rtw_dev *rtwdev,
447 struct rtw_vif *rtwvif)
448{
449 rtw_remove_rsvd_page(rtwdev, rtwvif);
450
451 if (rtw_wow_mgd_linked(rtwdev)) {
452 rtw_wow_config_linked_rsvd_page(rtwdev, rtwvif);
453 } else if (test_bit(RTW_FLAG_WOWLAN, rtwdev->flags) &&
454 rtw_wow_no_link(rtwdev)) {
455 rtw_wow_config_pno_rsvd_page(rtwdev, rtwvif);
456 }
457}
458
459static int rtw_wow_dl_fw_rsvd_page(struct rtw_dev *rtwdev)
460{
461 struct ieee80211_vif *wow_vif = rtwdev->wow.wow_vif;
462 struct rtw_vif *rtwvif = (struct rtw_vif *)wow_vif->drv_priv;
463
464 rtw_wow_config_rsvd_page(rtwdev, rtwvif);
465
466 return rtw_fw_download_rsvd_page(rtwdev);
467}
468
469static int rtw_wow_swap_fw(struct rtw_dev *rtwdev, enum rtw_fw_type type)
470{
471 struct rtw_fw_state *fw;
472 int ret;
473
474 switch (type) {
475 case RTW_WOWLAN_FW:
476 fw = &rtwdev->wow_fw;
477 break;
478
479 case RTW_NORMAL_FW:
480 fw = &rtwdev->fw;
481 break;
482
483 default:
484 rtw_warn(rtwdev, "unsupported firmware type to swap\n");
485 return -ENOENT;
486 }
487
488 ret = rtw_download_firmware(rtwdev, fw);
489 if (ret)
490 goto out;
491
492 rtw_fw_send_general_info(rtwdev);
493 rtw_fw_send_phydm_info(rtwdev);
494 rtw_wow_fw_media_status(rtwdev, true);
495
496out:
497 return ret;
498}
499
500static void rtw_wow_check_pno(struct rtw_dev *rtwdev,
501 struct cfg80211_sched_scan_request *nd_config)
502{
503 struct rtw_wow_param *rtw_wow = &rtwdev->wow;
504 struct rtw_pno_request *pno_req = &rtw_wow->pno_req;
505 struct ieee80211_channel *channel;
506 int i, size;
507
508 if (!nd_config->n_match_sets || !nd_config->n_channels)
509 goto err;
510
511 pno_req->match_set_cnt = nd_config->n_match_sets;
512 size = sizeof(*pno_req->match_sets) * pno_req->match_set_cnt;
513 pno_req->match_sets = kmemdup(nd_config->match_sets, size, GFP_KERNEL);
514 if (!pno_req->match_sets)
515 goto err;
516
517 pno_req->channel_cnt = nd_config->n_channels;
518 size = sizeof(*nd_config->channels[0]) * nd_config->n_channels;
519 pno_req->channels = kmalloc(size, GFP_KERNEL);
520 if (!pno_req->channels)
521 goto channel_err;
522
523 for (i = 0 ; i < pno_req->channel_cnt; i++) {
524 channel = pno_req->channels + i;
525 memcpy(channel, nd_config->channels[i], sizeof(*channel));
526 }
527
528 pno_req->scan_plan = *nd_config->scan_plans;
529 pno_req->inited = true;
530
531 rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: net-detect is enabled\n");
532
533 return;
534
535channel_err:
536 kfree(pno_req->match_sets);
537
538err:
539 rtw_dbg(rtwdev, RTW_DBG_WOW, "WOW: net-detect is disabled\n");
540}
541
542static int rtw_wow_leave_linked_ps(struct rtw_dev *rtwdev)
543{
544 if (!test_bit(RTW_FLAG_WOWLAN, rtwdev->flags))
545 cancel_delayed_work_sync(&rtwdev->watch_dog_work);
546
547 rtw_leave_lps(rtwdev);
548
549 return 0;
550}
551
552static int rtw_wow_leave_no_link_ps(struct rtw_dev *rtwdev)
553{
554 struct rtw_wow_param *rtw_wow = &rtwdev->wow;
555 int ret = 0;
556
557 if (test_bit(RTW_FLAG_WOWLAN, rtwdev->flags)) {
558 if (rtw_fw_lps_deep_mode)
559 rtw_leave_lps_deep(rtwdev);
560 } else {
561 if (test_bit(RTW_FLAG_INACTIVE_PS, rtwdev->flags)) {
562 rtw_wow->ips_enabled = true;
563 ret = rtw_leave_ips(rtwdev);
564 if (ret)
565 return ret;
566 }
567 }
568
569 return 0;
570}
571
572static int rtw_wow_leave_ps(struct rtw_dev *rtwdev)
573{
574 int ret = 0;
575
576 if (rtw_wow_mgd_linked(rtwdev))
577 ret = rtw_wow_leave_linked_ps(rtwdev);
578 else if (rtw_wow_no_link(rtwdev))
579 ret = rtw_wow_leave_no_link_ps(rtwdev);
580
581 return ret;
582}
583
584static int rtw_wow_restore_ps(struct rtw_dev *rtwdev)
585{
586 int ret = 0;
587
588 if (rtw_wow_no_link(rtwdev) && rtwdev->wow.ips_enabled)
589 ret = rtw_enter_ips(rtwdev);
590
591 return ret;
592}
593
594static int rtw_wow_enter_linked_ps(struct rtw_dev *rtwdev)
595{
596 struct rtw_wow_param *rtw_wow = &rtwdev->wow;
597 struct ieee80211_vif *wow_vif = rtw_wow->wow_vif;
598 struct rtw_vif *rtwvif = (struct rtw_vif *)wow_vif->drv_priv;
599
600 rtw_enter_lps(rtwdev, rtwvif->port);
601
602 return 0;
603}
604
605static int rtw_wow_enter_no_link_ps(struct rtw_dev *rtwdev)
606{
607
608 set_bit(RTW_FLAG_LEISURE_PS_DEEP, rtwdev->flags);
609
610 return 0;
611}
612
613static int rtw_wow_enter_ps(struct rtw_dev *rtwdev)
614{
615 int ret = 0;
616
617 if (rtw_wow_mgd_linked(rtwdev))
618 ret = rtw_wow_enter_linked_ps(rtwdev);
619 else if (rtw_wow_no_link(rtwdev) && rtw_fw_lps_deep_mode)
620 ret = rtw_wow_enter_no_link_ps(rtwdev);
621
622 return ret;
623}
624
625static void rtw_wow_stop_trx(struct rtw_dev *rtwdev)
626{
627 rtw_wow_bb_stop(rtwdev);
628 rtw_wow_rx_dma_stop(rtwdev);
629}
630
631static int rtw_wow_start(struct rtw_dev *rtwdev)
632{
633 int ret;
634
635 ret = rtw_wow_fw_start(rtwdev);
636 if (ret)
637 goto out;
638
639 rtw_hci_stop(rtwdev);
640 rtw_wow_bb_start(rtwdev);
641 rtw_wow_avoid_reset_mac(rtwdev);
642
643out:
644 return ret;
645}
646
647static int rtw_wow_enable(struct rtw_dev *rtwdev)
648{
649 int ret = 0;
650
651 rtw_wow_stop_trx(rtwdev);
652
653 ret = rtw_wow_swap_fw(rtwdev, RTW_WOWLAN_FW);
654 if (ret) {
655 rtw_err(rtwdev, "failed to swap wow fw\n");
656 goto error;
657 }
658
659 set_bit(RTW_FLAG_WOWLAN, rtwdev->flags);
660
661 ret = rtw_wow_dl_fw_rsvd_page(rtwdev);
662 if (ret) {
663 rtw_err(rtwdev, "failed to download wowlan rsvd page\n");
664 goto error;
665 }
666
667 ret = rtw_wow_start(rtwdev);
668 if (ret) {
669 rtw_err(rtwdev, "failed to start wow\n");
670 goto error;
671 }
672
673 return ret;
674
675error:
676 clear_bit(RTW_FLAG_WOWLAN, rtwdev->flags);
677 return ret;
678}
679
680static int rtw_wow_stop(struct rtw_dev *rtwdev)
681{
682 int ret;
683
684
685
686
687 ret = rtw_hci_setup(rtwdev);
688 if (ret) {
689 rtw_err(rtwdev, "failed to setup hci\n");
690 return ret;
691 }
692
693 ret = rtw_hci_start(rtwdev);
694 if (ret) {
695 rtw_err(rtwdev, "failed to start hci\n");
696 return ret;
697 }
698
699 ret = rtw_wow_fw_stop(rtwdev);
700 if (ret)
701 rtw_err(rtwdev, "failed to stop wowlan fw\n");
702
703 rtw_wow_bb_stop(rtwdev);
704
705 return ret;
706}
707
708static void rtw_wow_resume_trx(struct rtw_dev *rtwdev)
709{
710 rtw_wow_rx_dma_start(rtwdev);
711 rtw_wow_bb_start(rtwdev);
712 ieee80211_queue_delayed_work(rtwdev->hw, &rtwdev->watch_dog_work,
713 RTW_WATCH_DOG_DELAY_TIME);
714}
715
716static int rtw_wow_disable(struct rtw_dev *rtwdev)
717{
718 int ret;
719
720 clear_bit(RTW_FLAG_WOWLAN, rtwdev->flags);
721
722 ret = rtw_wow_stop(rtwdev);
723 if (ret) {
724 rtw_err(rtwdev, "failed to stop wow\n");
725 goto out;
726 }
727
728 ret = rtw_wow_swap_fw(rtwdev, RTW_NORMAL_FW);
729 if (ret) {
730 rtw_err(rtwdev, "failed to swap normal fw\n");
731 goto out;
732 }
733
734 ret = rtw_wow_dl_fw_rsvd_page(rtwdev);
735 if (ret)
736 rtw_err(rtwdev, "failed to download normal rsvd page\n");
737
738out:
739 rtw_wow_resume_trx(rtwdev);
740 return ret;
741}
742
743static void rtw_wow_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
744{
745 struct rtw_dev *rtwdev = data;
746 struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv;
747 struct rtw_wow_param *rtw_wow = &rtwdev->wow;
748
749
750
751
752 if (rtw_wow->wow_vif || vif->type != NL80211_IFTYPE_STATION)
753 return;
754
755 switch (rtwvif->net_type) {
756 case RTW_NET_MGD_LINKED:
757 rtw_wow->wow_vif = vif;
758 break;
759 case RTW_NET_NO_LINK:
760 if (rtw_wow->pno_req.inited)
761 rtwdev->wow.wow_vif = vif;
762 break;
763 default:
764 break;
765 }
766}
767
768static int rtw_wow_set_wakeups(struct rtw_dev *rtwdev,
769 struct cfg80211_wowlan *wowlan)
770{
771 struct rtw_wow_param *rtw_wow = &rtwdev->wow;
772 struct rtw_wow_pattern *rtw_patterns = rtw_wow->patterns;
773 struct rtw_vif *rtwvif;
774 int i;
775
776 if (wowlan->disconnect)
777 set_bit(RTW_WOW_FLAG_EN_DISCONNECT, rtw_wow->flags);
778 if (wowlan->magic_pkt)
779 set_bit(RTW_WOW_FLAG_EN_MAGIC_PKT, rtw_wow->flags);
780 if (wowlan->gtk_rekey_failure)
781 set_bit(RTW_WOW_FLAG_EN_REKEY_PKT, rtw_wow->flags);
782
783 if (wowlan->nd_config)
784 rtw_wow_check_pno(rtwdev, wowlan->nd_config);
785
786 rtw_iterate_vifs_atomic(rtwdev, rtw_wow_vif_iter, rtwdev);
787 if (!rtw_wow->wow_vif)
788 return -EPERM;
789
790 rtwvif = (struct rtw_vif *)rtw_wow->wow_vif->drv_priv;
791 if (wowlan->n_patterns && wowlan->patterns) {
792 rtw_wow->pattern_cnt = wowlan->n_patterns;
793 for (i = 0; i < wowlan->n_patterns; i++)
794 rtw_wow_pattern_generate(rtwdev, rtwvif,
795 wowlan->patterns + i,
796 rtw_patterns + i);
797 }
798
799 return 0;
800}
801
802static void rtw_wow_clear_wakeups(struct rtw_dev *rtwdev)
803{
804 struct rtw_wow_param *rtw_wow = &rtwdev->wow;
805 struct rtw_pno_request *pno_req = &rtw_wow->pno_req;
806
807 if (pno_req->inited) {
808 kfree(pno_req->channels);
809 kfree(pno_req->match_sets);
810 }
811
812 memset(rtw_wow, 0, sizeof(rtwdev->wow));
813}
814
815int rtw_wow_suspend(struct rtw_dev *rtwdev, struct cfg80211_wowlan *wowlan)
816{
817 int ret = 0;
818
819 ret = rtw_wow_set_wakeups(rtwdev, wowlan);
820 if (ret) {
821 rtw_err(rtwdev, "failed to set wakeup event\n");
822 goto out;
823 }
824
825 ret = rtw_wow_leave_ps(rtwdev);
826 if (ret) {
827 rtw_err(rtwdev, "failed to leave ps from normal mode\n");
828 goto out;
829 }
830
831 ret = rtw_wow_enable(rtwdev);
832 if (ret) {
833 rtw_err(rtwdev, "failed to enable wow\n");
834 rtw_wow_restore_ps(rtwdev);
835 goto out;
836 }
837
838 ret = rtw_wow_enter_ps(rtwdev);
839 if (ret)
840 rtw_err(rtwdev, "failed to enter ps for wow\n");
841
842out:
843 return ret;
844}
845
846int rtw_wow_resume(struct rtw_dev *rtwdev)
847{
848 int ret;
849
850
851 if (!test_bit(RTW_FLAG_WOWLAN, rtwdev->flags)) {
852 rtw_err(rtwdev, "wow is not enabled\n");
853 ret = -EPERM;
854 goto out;
855 }
856
857 ret = rtw_wow_leave_ps(rtwdev);
858 if (ret) {
859 rtw_err(rtwdev, "failed to leave ps from wowlan mode\n");
860 goto out;
861 }
862
863 rtw_wow_show_wakeup_reason(rtwdev);
864
865 ret = rtw_wow_disable(rtwdev);
866 if (ret) {
867 rtw_err(rtwdev, "failed to disable wow\n");
868 goto out;
869 }
870
871 ret = rtw_wow_restore_ps(rtwdev);
872 if (ret)
873 rtw_err(rtwdev, "failed to restore ps to normal mode\n");
874
875out:
876 rtw_wow_clear_wakeups(rtwdev);
877 return ret;
878}
879
