1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * This file is part of wl1271
4 *
5 * Copyright (C) 2008-2009 Nokia Corporation
6 *
7 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8 */
9
10 #include "wlcore.h"
11 #include "debug.h"
12 #include "io.h"
13 #include "event.h"
14 #include "ps.h"
15 #include "scan.h"
16 #include "wl12xx_80211.h"
17 #include "hw_ops.h"
18
19 #define WL18XX_LOGGER_SDIO_BUFF_MAX (0x1020)
20 #define WL18XX_DATA_RAM_BASE_ADDRESS (0x20000000)
21 #define WL18XX_LOGGER_SDIO_BUFF_ADDR (0x40159c)
22 #define WL18XX_LOGGER_BUFF_OFFSET (sizeof(struct fw_logger_information))
23 #define WL18XX_LOGGER_READ_POINT_OFFSET (12)
24
wlcore_event_fw_logger(struct wl1271 * wl)25 int wlcore_event_fw_logger(struct wl1271 *wl)
26 {
27 int ret;
28 struct fw_logger_information fw_log;
29 u8 *buffer;
30 u32 internal_fw_addrbase = WL18XX_DATA_RAM_BASE_ADDRESS;
31 u32 addr = WL18XX_LOGGER_SDIO_BUFF_ADDR;
32 u32 addr_ptr;
33 u32 buff_start_ptr;
34 u32 buff_read_ptr;
35 u32 buff_end_ptr;
36 u32 available_len;
37 u32 actual_len;
38 u32 clear_ptr;
39 size_t len;
40 u32 start_loc;
41
42 buffer = kzalloc(WL18XX_LOGGER_SDIO_BUFF_MAX, GFP_KERNEL);
43 if (!buffer) {
44 wl1271_error("Fail to allocate fw logger memory");
45 actual_len = 0;
46 goto out;
47 }
48
49 ret = wlcore_read(wl, addr, buffer, WL18XX_LOGGER_SDIO_BUFF_MAX,
50 false);
51 if (ret < 0) {
52 wl1271_error("Fail to read logger buffer, error_id = %d",
53 ret);
54 actual_len = 0;
55 goto free_out;
56 }
57
58 memcpy(&fw_log, buffer, sizeof(fw_log));
59
60 actual_len = le32_to_cpu(fw_log.actual_buff_size);
61 if (actual_len == 0)
62 goto free_out;
63
64 /* Calculate the internal pointer to the fwlog structure */
65 addr_ptr = internal_fw_addrbase + addr;
66
67 /* Calculate the internal pointers to the start and end of log buffer */
68 buff_start_ptr = addr_ptr + WL18XX_LOGGER_BUFF_OFFSET;
69 buff_end_ptr = buff_start_ptr + le32_to_cpu(fw_log.max_buff_size);
70
71 /* Read the read pointer and validate it */
72 buff_read_ptr = le32_to_cpu(fw_log.buff_read_ptr);
73 if (buff_read_ptr < buff_start_ptr ||
74 buff_read_ptr >= buff_end_ptr) {
75 wl1271_error("buffer read pointer out of bounds: %x not in (%x-%x)\n",
76 buff_read_ptr, buff_start_ptr, buff_end_ptr);
77 goto free_out;
78 }
79
80 start_loc = buff_read_ptr - addr_ptr;
81 available_len = buff_end_ptr - buff_read_ptr;
82
83 /* Copy initial part up to the end of ring buffer */
84 len = min(actual_len, available_len);
85 wl12xx_copy_fwlog(wl, &buffer[start_loc], len);
86 clear_ptr = addr_ptr + start_loc + len;
87 if (clear_ptr == buff_end_ptr)
88 clear_ptr = buff_start_ptr;
89
90 /* Copy any remaining part from beginning of ring buffer */
91 len = actual_len - len;
92 if (len) {
93 wl12xx_copy_fwlog(wl,
94 &buffer[WL18XX_LOGGER_BUFF_OFFSET],
95 len);
96 clear_ptr = addr_ptr + WL18XX_LOGGER_BUFF_OFFSET + len;
97 }
98
99 /* Update the read pointer */
100 ret = wlcore_write32(wl, addr + WL18XX_LOGGER_READ_POINT_OFFSET,
101 clear_ptr);
102 free_out:
103 kfree(buffer);
104 out:
105 return actual_len;
106 }
107 EXPORT_SYMBOL_GPL(wlcore_event_fw_logger);
108
wlcore_event_rssi_trigger(struct wl1271 * wl,s8 * metric_arr)109 void wlcore_event_rssi_trigger(struct wl1271 *wl, s8 *metric_arr)
110 {
111 struct wl12xx_vif *wlvif;
112 struct ieee80211_vif *vif;
113 enum nl80211_cqm_rssi_threshold_event event;
114 s8 metric = metric_arr[0];
115
116 wl1271_debug(DEBUG_EVENT, "RSSI trigger metric: %d", metric);
117
118 /* TODO: check actual multi-role support */
119 wl12xx_for_each_wlvif_sta(wl, wlvif) {
120 if (metric <= wlvif->rssi_thold)
121 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
122 else
123 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
124
125 vif = wl12xx_wlvif_to_vif(wlvif);
126 if (event != wlvif->last_rssi_event)
127 ieee80211_cqm_rssi_notify(vif, event, metric,
128 GFP_KERNEL);
129 wlvif->last_rssi_event = event;
130 }
131 }
132 EXPORT_SYMBOL_GPL(wlcore_event_rssi_trigger);
133
wl1271_stop_ba_event(struct wl1271 * wl,struct wl12xx_vif * wlvif)134 static void wl1271_stop_ba_event(struct wl1271 *wl, struct wl12xx_vif *wlvif)
135 {
136 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
137
138 if (wlvif->bss_type != BSS_TYPE_AP_BSS) {
139 u8 hlid = wlvif->sta.hlid;
140 if (!wl->links[hlid].ba_bitmap)
141 return;
142 ieee80211_stop_rx_ba_session(vif, wl->links[hlid].ba_bitmap,
143 vif->bss_conf.bssid);
144 } else {
145 u8 hlid;
146 struct wl1271_link *lnk;
147 for_each_set_bit(hlid, wlvif->ap.sta_hlid_map,
148 wl->num_links) {
149 lnk = &wl->links[hlid];
150 if (!lnk->ba_bitmap)
151 continue;
152
153 ieee80211_stop_rx_ba_session(vif,
154 lnk->ba_bitmap,
155 lnk->addr);
156 }
157 }
158 }
159
wlcore_event_soft_gemini_sense(struct wl1271 * wl,u8 enable)160 void wlcore_event_soft_gemini_sense(struct wl1271 *wl, u8 enable)
161 {
162 struct wl12xx_vif *wlvif;
163
164 if (enable) {
165 set_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags);
166 } else {
167 clear_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags);
168 wl12xx_for_each_wlvif_sta(wl, wlvif) {
169 wl1271_recalc_rx_streaming(wl, wlvif);
170 }
171 }
172 }
173 EXPORT_SYMBOL_GPL(wlcore_event_soft_gemini_sense);
174
wlcore_event_sched_scan_completed(struct wl1271 * wl,u8 status)175 void wlcore_event_sched_scan_completed(struct wl1271 *wl,
176 u8 status)
177 {
178 wl1271_debug(DEBUG_EVENT, "PERIODIC_SCAN_COMPLETE_EVENT (status 0x%0x)",
179 status);
180
181 if (wl->sched_vif) {
182 ieee80211_sched_scan_stopped(wl->hw);
183 wl->sched_vif = NULL;
184 }
185 }
186 EXPORT_SYMBOL_GPL(wlcore_event_sched_scan_completed);
187
wlcore_event_ba_rx_constraint(struct wl1271 * wl,unsigned long roles_bitmap,unsigned long allowed_bitmap)188 void wlcore_event_ba_rx_constraint(struct wl1271 *wl,
189 unsigned long roles_bitmap,
190 unsigned long allowed_bitmap)
191 {
192 struct wl12xx_vif *wlvif;
193
194 wl1271_debug(DEBUG_EVENT, "%s: roles=0x%lx allowed=0x%lx",
195 __func__, roles_bitmap, allowed_bitmap);
196
197 wl12xx_for_each_wlvif(wl, wlvif) {
198 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID ||
199 !test_bit(wlvif->role_id , &roles_bitmap))
200 continue;
201
202 wlvif->ba_allowed = !!test_bit(wlvif->role_id,
203 &allowed_bitmap);
204 if (!wlvif->ba_allowed)
205 wl1271_stop_ba_event(wl, wlvif);
206 }
207 }
208 EXPORT_SYMBOL_GPL(wlcore_event_ba_rx_constraint);
209
wlcore_event_channel_switch(struct wl1271 * wl,unsigned long roles_bitmap,bool success)210 void wlcore_event_channel_switch(struct wl1271 *wl,
211 unsigned long roles_bitmap,
212 bool success)
213 {
214 struct wl12xx_vif *wlvif;
215 struct ieee80211_vif *vif;
216
217 wl1271_debug(DEBUG_EVENT, "%s: roles=0x%lx success=%d",
218 __func__, roles_bitmap, success);
219
220 wl12xx_for_each_wlvif(wl, wlvif) {
221 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID ||
222 !test_bit(wlvif->role_id , &roles_bitmap))
223 continue;
224
225 if (!test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS,
226 &wlvif->flags))
227 continue;
228
229 vif = wl12xx_wlvif_to_vif(wlvif);
230
231 if (wlvif->bss_type == BSS_TYPE_STA_BSS) {
232 ieee80211_chswitch_done(vif, success, 0);
233 cancel_delayed_work(&wlvif->channel_switch_work);
234 } else {
235 set_bit(WLVIF_FLAG_BEACON_DISABLED, &wlvif->flags);
236 ieee80211_csa_finish(vif, 0);
237 }
238 }
239 }
240 EXPORT_SYMBOL_GPL(wlcore_event_channel_switch);
241
wlcore_event_dummy_packet(struct wl1271 * wl)242 void wlcore_event_dummy_packet(struct wl1271 *wl)
243 {
244 if (wl->plt) {
245 wl1271_info("Got DUMMY_PACKET event in PLT mode. FW bug, ignoring.");
246 return;
247 }
248
249 wl1271_debug(DEBUG_EVENT, "DUMMY_PACKET_ID_EVENT_ID");
250 wl1271_tx_dummy_packet(wl);
251 }
252 EXPORT_SYMBOL_GPL(wlcore_event_dummy_packet);
253
wlcore_disconnect_sta(struct wl1271 * wl,unsigned long sta_bitmap)254 static void wlcore_disconnect_sta(struct wl1271 *wl, unsigned long sta_bitmap)
255 {
256 u32 num_packets = wl->conf.tx.max_tx_retries;
257 struct wl12xx_vif *wlvif;
258 struct ieee80211_vif *vif;
259 struct ieee80211_sta *sta;
260 const u8 *addr;
261 int h;
262
263 for_each_set_bit(h, &sta_bitmap, wl->num_links) {
264 bool found = false;
265 /* find the ap vif connected to this sta */
266 wl12xx_for_each_wlvif_ap(wl, wlvif) {
267 if (!test_bit(h, wlvif->ap.sta_hlid_map))
268 continue;
269 found = true;
270 break;
271 }
272 if (!found)
273 continue;
274
275 vif = wl12xx_wlvif_to_vif(wlvif);
276 addr = wl->links[h].addr;
277
278 rcu_read_lock();
279 sta = ieee80211_find_sta(vif, addr);
280 if (sta) {
281 wl1271_debug(DEBUG_EVENT, "remove sta %d", h);
282 ieee80211_report_low_ack(sta, num_packets);
283 }
284 rcu_read_unlock();
285 }
286 }
287
wlcore_event_max_tx_failure(struct wl1271 * wl,unsigned long sta_bitmap)288 void wlcore_event_max_tx_failure(struct wl1271 *wl, unsigned long sta_bitmap)
289 {
290 wl1271_debug(DEBUG_EVENT, "MAX_TX_FAILURE_EVENT_ID");
291 wlcore_disconnect_sta(wl, sta_bitmap);
292 }
293 EXPORT_SYMBOL_GPL(wlcore_event_max_tx_failure);
294
wlcore_event_inactive_sta(struct wl1271 * wl,unsigned long sta_bitmap)295 void wlcore_event_inactive_sta(struct wl1271 *wl, unsigned long sta_bitmap)
296 {
297 wl1271_debug(DEBUG_EVENT, "INACTIVE_STA_EVENT_ID");
298 wlcore_disconnect_sta(wl, sta_bitmap);
299 }
300 EXPORT_SYMBOL_GPL(wlcore_event_inactive_sta);
301
wlcore_event_roc_complete(struct wl1271 * wl)302 void wlcore_event_roc_complete(struct wl1271 *wl)
303 {
304 wl1271_debug(DEBUG_EVENT, "REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID");
305 if (wl->roc_vif)
306 ieee80211_ready_on_channel(wl->hw);
307 }
308 EXPORT_SYMBOL_GPL(wlcore_event_roc_complete);
309
wlcore_event_beacon_loss(struct wl1271 * wl,unsigned long roles_bitmap)310 void wlcore_event_beacon_loss(struct wl1271 *wl, unsigned long roles_bitmap)
311 {
312 /*
313 * We are HW_MONITOR device. On beacon loss - queue
314 * connection loss work. Cancel it on REGAINED event.
315 */
316 struct wl12xx_vif *wlvif;
317 struct ieee80211_vif *vif;
318 int delay = wl->conf.conn.synch_fail_thold *
319 wl->conf.conn.bss_lose_timeout;
320
321 wl1271_info("Beacon loss detected. roles:0x%lx", roles_bitmap);
322
323 wl12xx_for_each_wlvif_sta(wl, wlvif) {
324 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID ||
325 !test_bit(wlvif->role_id , &roles_bitmap))
326 continue;
327
328 vif = wl12xx_wlvif_to_vif(wlvif);
329
330 /* don't attempt roaming in case of p2p */
331 if (wlvif->p2p) {
332 ieee80211_connection_loss(vif);
333 continue;
334 }
335
336 /*
337 * if the work is already queued, it should take place.
338 * We don't want to delay the connection loss
339 * indication any more.
340 */
341 ieee80211_queue_delayed_work(wl->hw,
342 &wlvif->connection_loss_work,
343 msecs_to_jiffies(delay));
344
345 ieee80211_cqm_beacon_loss_notify(vif, GFP_KERNEL);
346 }
347 }
348 EXPORT_SYMBOL_GPL(wlcore_event_beacon_loss);
349
wl1271_event_unmask(struct wl1271 * wl)350 int wl1271_event_unmask(struct wl1271 *wl)
351 {
352 int ret;
353
354 wl1271_debug(DEBUG_EVENT, "unmasking event_mask 0x%x", wl->event_mask);
355 ret = wl1271_acx_event_mbox_mask(wl, ~(wl->event_mask));
356 if (ret < 0)
357 return ret;
358
359 return 0;
360 }
361
wl1271_event_handle(struct wl1271 * wl,u8 mbox_num)362 int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num)
363 {
364 int ret;
365
366 wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
367
368 if (mbox_num > 1)
369 return -EINVAL;
370
371 /* first we read the mbox descriptor */
372 ret = wlcore_read(wl, wl->mbox_ptr[mbox_num], wl->mbox,
373 wl->mbox_size, false);
374 if (ret < 0)
375 return ret;
376
377 /* process the descriptor */
378 ret = wl->ops->process_mailbox_events(wl);
379 if (ret < 0)
380 return ret;
381
382 /*
383 * TODO: we just need this because one bit is in a different
384 * place. Is there any better way?
385 */
386 ret = wl->ops->ack_event(wl);
387
388 return ret;
389 }
390