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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
25int 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 end_buff_addr = WL18XX_LOGGER_SDIO_BUFF_ADDR +
33 WL18XX_LOGGER_BUFF_OFFSET;
34 u32 available_len;
35 u32 actual_len;
36 u32 clear_addr;
37 size_t len;
38 u32 start_loc;
39
40 buffer = kzalloc(WL18XX_LOGGER_SDIO_BUFF_MAX, GFP_KERNEL);
41 if (!buffer) {
42 wl1271_error("Fail to allocate fw logger memory");
43 fw_log.actual_buff_size = cpu_to_le32(0);
44 goto out;
45 }
46
47 ret = wlcore_read(wl, addr, buffer, WL18XX_LOGGER_SDIO_BUFF_MAX,
48 false);
49 if (ret < 0) {
50 wl1271_error("Fail to read logger buffer, error_id = %d",
51 ret);
52 fw_log.actual_buff_size = cpu_to_le32(0);
53 goto free_out;
54 }
55
56 memcpy(&fw_log, buffer, sizeof(fw_log));
57
58 if (le32_to_cpu(fw_log.actual_buff_size) == 0)
59 goto free_out;
60
61 actual_len = le32_to_cpu(fw_log.actual_buff_size);
62 start_loc = (le32_to_cpu(fw_log.buff_read_ptr) -
63 internal_fw_addrbase) - addr;
64 end_buff_addr += le32_to_cpu(fw_log.max_buff_size);
65 available_len = end_buff_addr -
66 (le32_to_cpu(fw_log.buff_read_ptr) -
67 internal_fw_addrbase);
68 actual_len = min(actual_len, available_len);
69 len = actual_len;
70
71 wl12xx_copy_fwlog(wl, &buffer[start_loc], len);
72 clear_addr = addr + start_loc + le32_to_cpu(fw_log.actual_buff_size) +
73 internal_fw_addrbase;
74
75 len = le32_to_cpu(fw_log.actual_buff_size) - len;
76 if (len) {
77 wl12xx_copy_fwlog(wl,
78 &buffer[WL18XX_LOGGER_BUFF_OFFSET],
79 len);
80 clear_addr = addr + WL18XX_LOGGER_BUFF_OFFSET + len +
81 internal_fw_addrbase;
82 }
83
84 /* double check that clear address and write pointer are the same */
85 if (clear_addr != le32_to_cpu(fw_log.buff_write_ptr)) {
86 wl1271_error("Calculate of clear addr Clear = %x, write = %x",
87 clear_addr, le32_to_cpu(fw_log.buff_write_ptr));
88 }
89
90 /* indicate FW about Clear buffer */
91 ret = wlcore_write32(wl, addr + WL18XX_LOGGER_READ_POINT_OFFSET,
92 fw_log.buff_write_ptr);
93free_out:
94 kfree(buffer);
95out:
96 return le32_to_cpu(fw_log.actual_buff_size);
97}
98EXPORT_SYMBOL_GPL(wlcore_event_fw_logger);
99
100void wlcore_event_rssi_trigger(struct wl1271 *wl, s8 *metric_arr)
101{
102 struct wl12xx_vif *wlvif;
103 struct ieee80211_vif *vif;
104 enum nl80211_cqm_rssi_threshold_event event;
105 s8 metric = metric_arr[0];
106
107 wl1271_debug(DEBUG_EVENT, "RSSI trigger metric: %d", metric);
108
109 /* TODO: check actual multi-role support */
110 wl12xx_for_each_wlvif_sta(wl, wlvif) {
111 if (metric <= wlvif->rssi_thold)
112 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
113 else
114 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
115
116 vif = wl12xx_wlvif_to_vif(wlvif);
117 if (event != wlvif->last_rssi_event)
118 ieee80211_cqm_rssi_notify(vif, event, metric,
119 GFP_KERNEL);
120 wlvif->last_rssi_event = event;
121 }
122}
123EXPORT_SYMBOL_GPL(wlcore_event_rssi_trigger);
124
125static void wl1271_stop_ba_event(struct wl1271 *wl, struct wl12xx_vif *wlvif)
126{
127 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
128
129 if (wlvif->bss_type != BSS_TYPE_AP_BSS) {
130 u8 hlid = wlvif->sta.hlid;
131 if (!wl->links[hlid].ba_bitmap)
132 return;
133 ieee80211_stop_rx_ba_session(vif, wl->links[hlid].ba_bitmap,
134 vif->bss_conf.bssid);
135 } else {
136 u8 hlid;
137 struct wl1271_link *lnk;
138 for_each_set_bit(hlid, wlvif->ap.sta_hlid_map,
139 wl->num_links) {
140 lnk = &wl->links[hlid];
141 if (!lnk->ba_bitmap)
142 continue;
143
144 ieee80211_stop_rx_ba_session(vif,
145 lnk->ba_bitmap,
146 lnk->addr);
147 }
148 }
149}
150
151void wlcore_event_soft_gemini_sense(struct wl1271 *wl, u8 enable)
152{
153 struct wl12xx_vif *wlvif;
154
155 if (enable) {
156 set_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags);
157 } else {
158 clear_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags);
159 wl12xx_for_each_wlvif_sta(wl, wlvif) {
160 wl1271_recalc_rx_streaming(wl, wlvif);
161 }
162 }
163}
164EXPORT_SYMBOL_GPL(wlcore_event_soft_gemini_sense);
165
166void wlcore_event_sched_scan_completed(struct wl1271 *wl,
167 u8 status)
168{
169 wl1271_debug(DEBUG_EVENT, "PERIODIC_SCAN_COMPLETE_EVENT (status 0x%0x)",
170 status);
171
172 if (wl->sched_vif) {
173 ieee80211_sched_scan_stopped(wl->hw);
174 wl->sched_vif = NULL;
175 }
176}
177EXPORT_SYMBOL_GPL(wlcore_event_sched_scan_completed);
178
179void wlcore_event_ba_rx_constraint(struct wl1271 *wl,
180 unsigned long roles_bitmap,
181 unsigned long allowed_bitmap)
182{
183 struct wl12xx_vif *wlvif;
184
185 wl1271_debug(DEBUG_EVENT, "%s: roles=0x%lx allowed=0x%lx",
186 __func__, roles_bitmap, allowed_bitmap);
187
188 wl12xx_for_each_wlvif(wl, wlvif) {
189 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID ||
190 !test_bit(wlvif->role_id , &roles_bitmap))
191 continue;
192
193 wlvif->ba_allowed = !!test_bit(wlvif->role_id,
194 &allowed_bitmap);
195 if (!wlvif->ba_allowed)
196 wl1271_stop_ba_event(wl, wlvif);
197 }
198}
199EXPORT_SYMBOL_GPL(wlcore_event_ba_rx_constraint);
200
201void wlcore_event_channel_switch(struct wl1271 *wl,
202 unsigned long roles_bitmap,
203 bool success)
204{
205 struct wl12xx_vif *wlvif;
206 struct ieee80211_vif *vif;
207
208 wl1271_debug(DEBUG_EVENT, "%s: roles=0x%lx success=%d",
209 __func__, roles_bitmap, success);
210
211 wl12xx_for_each_wlvif(wl, wlvif) {
212 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID ||
213 !test_bit(wlvif->role_id , &roles_bitmap))
214 continue;
215
216 if (!test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS,
217 &wlvif->flags))
218 continue;
219
220 vif = wl12xx_wlvif_to_vif(wlvif);
221
222 if (wlvif->bss_type == BSS_TYPE_STA_BSS) {
223 ieee80211_chswitch_done(vif, success);
224 cancel_delayed_work(&wlvif->channel_switch_work);
225 } else {
226 set_bit(WLVIF_FLAG_BEACON_DISABLED, &wlvif->flags);
227 ieee80211_csa_finish(vif);
228 }
229 }
230}
231EXPORT_SYMBOL_GPL(wlcore_event_channel_switch);
232
233void wlcore_event_dummy_packet(struct wl1271 *wl)
234{
235 if (wl->plt) {
236 wl1271_info("Got DUMMY_PACKET event in PLT mode. FW bug, ignoring.");
237 return;
238 }
239
240 wl1271_debug(DEBUG_EVENT, "DUMMY_PACKET_ID_EVENT_ID");
241 wl1271_tx_dummy_packet(wl);
242}
243EXPORT_SYMBOL_GPL(wlcore_event_dummy_packet);
244
245static void wlcore_disconnect_sta(struct wl1271 *wl, unsigned long sta_bitmap)
246{
247 u32 num_packets = wl->conf.tx.max_tx_retries;
248 struct wl12xx_vif *wlvif;
249 struct ieee80211_vif *vif;
250 struct ieee80211_sta *sta;
251 const u8 *addr;
252 int h;
253
254 for_each_set_bit(h, &sta_bitmap, wl->num_links) {
255 bool found = false;
256 /* find the ap vif connected to this sta */
257 wl12xx_for_each_wlvif_ap(wl, wlvif) {
258 if (!test_bit(h, wlvif->ap.sta_hlid_map))
259 continue;
260 found = true;
261 break;
262 }
263 if (!found)
264 continue;
265
266 vif = wl12xx_wlvif_to_vif(wlvif);
267 addr = wl->links[h].addr;
268
269 rcu_read_lock();
270 sta = ieee80211_find_sta(vif, addr);
271 if (sta) {
272 wl1271_debug(DEBUG_EVENT, "remove sta %d", h);
273 ieee80211_report_low_ack(sta, num_packets);
274 }
275 rcu_read_unlock();
276 }
277}
278
279void wlcore_event_max_tx_failure(struct wl1271 *wl, unsigned long sta_bitmap)
280{
281 wl1271_debug(DEBUG_EVENT, "MAX_TX_FAILURE_EVENT_ID");
282 wlcore_disconnect_sta(wl, sta_bitmap);
283}
284EXPORT_SYMBOL_GPL(wlcore_event_max_tx_failure);
285
286void wlcore_event_inactive_sta(struct wl1271 *wl, unsigned long sta_bitmap)
287{
288 wl1271_debug(DEBUG_EVENT, "INACTIVE_STA_EVENT_ID");
289 wlcore_disconnect_sta(wl, sta_bitmap);
290}
291EXPORT_SYMBOL_GPL(wlcore_event_inactive_sta);
292
293void wlcore_event_roc_complete(struct wl1271 *wl)
294{
295 wl1271_debug(DEBUG_EVENT, "REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID");
296 if (wl->roc_vif)
297 ieee80211_ready_on_channel(wl->hw);
298}
299EXPORT_SYMBOL_GPL(wlcore_event_roc_complete);
300
301void wlcore_event_beacon_loss(struct wl1271 *wl, unsigned long roles_bitmap)
302{
303 /*
304 * We are HW_MONITOR device. On beacon loss - queue
305 * connection loss work. Cancel it on REGAINED event.
306 */
307 struct wl12xx_vif *wlvif;
308 struct ieee80211_vif *vif;
309 int delay = wl->conf.conn.synch_fail_thold *
310 wl->conf.conn.bss_lose_timeout;
311
312 wl1271_info("Beacon loss detected. roles:0x%lx", roles_bitmap);
313
314 wl12xx_for_each_wlvif_sta(wl, wlvif) {
315 if (wlvif->role_id == WL12XX_INVALID_ROLE_ID ||
316 !test_bit(wlvif->role_id , &roles_bitmap))
317 continue;
318
319 vif = wl12xx_wlvif_to_vif(wlvif);
320
321 /* don't attempt roaming in case of p2p */
322 if (wlvif->p2p) {
323 ieee80211_connection_loss(vif);
324 continue;
325 }
326
327 /*
328 * if the work is already queued, it should take place.
329 * We don't want to delay the connection loss
330 * indication any more.
331 */
332 ieee80211_queue_delayed_work(wl->hw,
333 &wlvif->connection_loss_work,
334 msecs_to_jiffies(delay));
335
336 ieee80211_cqm_beacon_loss_notify(vif, GFP_KERNEL);
337 }
338}
339EXPORT_SYMBOL_GPL(wlcore_event_beacon_loss);
340
341int wl1271_event_unmask(struct wl1271 *wl)
342{
343 int ret;
344
345 wl1271_debug(DEBUG_EVENT, "unmasking event_mask 0x%x", wl->event_mask);
346 ret = wl1271_acx_event_mbox_mask(wl, ~(wl->event_mask));
347 if (ret < 0)
348 return ret;
349
350 return 0;
351}
352
353int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num)
354{
355 int ret;
356
357 wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
358
359 if (mbox_num > 1)
360 return -EINVAL;
361
362 /* first we read the mbox descriptor */
363 ret = wlcore_read(wl, wl->mbox_ptr[mbox_num], wl->mbox,
364 wl->mbox_size, false);
365 if (ret < 0)
366 return ret;
367
368 /* process the descriptor */
369 ret = wl->ops->process_mailbox_events(wl);
370 if (ret < 0)
371 return ret;
372
373 /*
374 * TODO: we just need this because one bit is in a different
375 * place. Is there any better way?
376 */
377 ret = wl->ops->ack_event(wl);
378
379 return ret;
380}