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 | |
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, buf: buffer, WL18XX_LOGGER_SDIO_BUFF_MAX, |
50 | fixed: 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, memblock: &buffer[start_loc], maxlen: len); |
86 | clear_ptr = addr_ptr + start_loc + actual_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 | memblock: &buffer[WL18XX_LOGGER_BUFF_OFFSET], |
95 | maxlen: len); |
96 | clear_ptr = addr_ptr + WL18XX_LOGGER_BUFF_OFFSET + len; |
97 | } |
98 | |
99 | /* Update the read pointer */ |
100 | ret = wlcore_write32(wl, addr: addr + WL18XX_LOGGER_READ_POINT_OFFSET, |
101 | val: clear_ptr); |
102 | free_out: |
103 | kfree(objp: buffer); |
104 | out: |
105 | return actual_len; |
106 | } |
107 | EXPORT_SYMBOL_GPL(wlcore_event_fw_logger); |
108 | |
109 | void (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, rssi_event: event, rssi_level: metric, |
128 | GFP_KERNEL); |
129 | wlvif->last_rssi_event = event; |
130 | } |
131 | } |
132 | EXPORT_SYMBOL_GPL(wlcore_event_rssi_trigger); |
133 | |
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, ba_rx_bitmap: wl->links[hlid].ba_bitmap, |
143 | addr: 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 | ba_rx_bitmap: lnk->ba_bitmap, |
155 | addr: lnk->addr); |
156 | } |
157 | } |
158 | } |
159 | |
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(nr: WL1271_FLAG_SOFT_GEMINI, addr: &wl->flags); |
166 | } else { |
167 | clear_bit(nr: WL1271_FLAG_SOFT_GEMINI, addr: &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 | |
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(hw: wl->hw); |
183 | wl->sched_vif = NULL; |
184 | } |
185 | } |
186 | EXPORT_SYMBOL_GPL(wlcore_event_sched_scan_completed); |
187 | |
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 | |
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(nr: WLVIF_FLAG_CS_PROGRESS, |
226 | addr: &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, link_id: 0); |
233 | cancel_delayed_work(dwork: &wlvif->channel_switch_work); |
234 | } else { |
235 | set_bit(nr: WLVIF_FLAG_BEACON_DISABLED, addr: &wlvif->flags); |
236 | ieee80211_csa_finish(vif, link_id: 0); |
237 | } |
238 | } |
239 | } |
240 | EXPORT_SYMBOL_GPL(wlcore_event_channel_switch); |
241 | |
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 | |
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 | |
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 | |
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 | |
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(hw: wl->hw); |
307 | } |
308 | EXPORT_SYMBOL_GPL(wlcore_event_roc_complete); |
309 | |
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(hw: wl->hw, |
342 | dwork: &wlvif->connection_loss_work, |
343 | delay: msecs_to_jiffies(m: delay)); |
344 | |
345 | ieee80211_cqm_beacon_loss_notify(vif, GFP_KERNEL); |
346 | } |
347 | } |
348 | EXPORT_SYMBOL_GPL(wlcore_event_beacon_loss); |
349 | |
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, event_mask: ~(wl->event_mask)); |
356 | if (ret < 0) |
357 | return ret; |
358 | |
359 | return 0; |
360 | } |
361 | |
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, addr: wl->mbox_ptr[mbox_num], buf: wl->mbox, |
373 | len: wl->mbox_size, fixed: 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 | |