1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * This file is part of wl1251 |
4 | * |
5 | * Copyright (C) 2008-2009 Nokia Corporation |
6 | */ |
7 | |
8 | #include <linux/module.h> |
9 | #include <linux/interrupt.h> |
10 | #include <linux/firmware.h> |
11 | #include <linux/delay.h> |
12 | #include <linux/irq.h> |
13 | #include <linux/crc32.h> |
14 | #include <linux/etherdevice.h> |
15 | #include <linux/vmalloc.h> |
16 | #include <linux/slab.h> |
17 | #include <linux/netdevice.h> |
18 | |
19 | #include "wl1251.h" |
20 | #include "wl12xx_80211.h" |
21 | #include "reg.h" |
22 | #include "io.h" |
23 | #include "cmd.h" |
24 | #include "event.h" |
25 | #include "tx.h" |
26 | #include "rx.h" |
27 | #include "ps.h" |
28 | #include "init.h" |
29 | #include "debugfs.h" |
30 | #include "boot.h" |
31 | |
32 | void wl1251_enable_interrupts(struct wl1251 *wl) |
33 | { |
34 | wl->if_ops->enable_irq(wl); |
35 | } |
36 | |
37 | void wl1251_disable_interrupts(struct wl1251 *wl) |
38 | { |
39 | wl->if_ops->disable_irq(wl); |
40 | } |
41 | |
42 | static int wl1251_power_off(struct wl1251 *wl) |
43 | { |
44 | return wl->if_ops->power(wl, false); |
45 | } |
46 | |
47 | static int wl1251_power_on(struct wl1251 *wl) |
48 | { |
49 | return wl->if_ops->power(wl, true); |
50 | } |
51 | |
52 | static int wl1251_fetch_firmware(struct wl1251 *wl) |
53 | { |
54 | const struct firmware *fw; |
55 | struct device *dev = wiphy_dev(wiphy: wl->hw->wiphy); |
56 | int ret; |
57 | |
58 | ret = request_firmware(fw: &fw, WL1251_FW_NAME, device: dev); |
59 | |
60 | if (ret < 0) { |
61 | wl1251_error("could not get firmware: %d" , ret); |
62 | return ret; |
63 | } |
64 | |
65 | if (fw->size % 4) { |
66 | wl1251_error("firmware size is not multiple of 32 bits: %zu" , |
67 | fw->size); |
68 | ret = -EILSEQ; |
69 | goto out; |
70 | } |
71 | |
72 | wl->fw_len = fw->size; |
73 | wl->fw = vmalloc(size: wl->fw_len); |
74 | |
75 | if (!wl->fw) { |
76 | wl1251_error("could not allocate memory for the firmware" ); |
77 | ret = -ENOMEM; |
78 | goto out; |
79 | } |
80 | |
81 | memcpy(wl->fw, fw->data, wl->fw_len); |
82 | |
83 | ret = 0; |
84 | |
85 | out: |
86 | release_firmware(fw); |
87 | |
88 | return ret; |
89 | } |
90 | |
91 | static int wl1251_fetch_nvs(struct wl1251 *wl) |
92 | { |
93 | const struct firmware *fw; |
94 | struct device *dev = wiphy_dev(wiphy: wl->hw->wiphy); |
95 | int ret; |
96 | |
97 | ret = request_firmware(fw: &fw, WL1251_NVS_NAME, device: dev); |
98 | |
99 | if (ret < 0) { |
100 | wl1251_error("could not get nvs file: %d" , ret); |
101 | return ret; |
102 | } |
103 | |
104 | if (fw->size % 4) { |
105 | wl1251_error("nvs size is not multiple of 32 bits: %zu" , |
106 | fw->size); |
107 | ret = -EILSEQ; |
108 | goto out; |
109 | } |
110 | |
111 | wl->nvs = kmemdup(p: fw->data, size: fw->size, GFP_KERNEL); |
112 | |
113 | if (!wl->nvs) { |
114 | wl1251_error("could not allocate memory for the nvs file" ); |
115 | ret = -ENOMEM; |
116 | goto out; |
117 | } |
118 | |
119 | wl->nvs_len = fw->size; |
120 | |
121 | ret = 0; |
122 | |
123 | out: |
124 | release_firmware(fw); |
125 | |
126 | return ret; |
127 | } |
128 | |
129 | static void wl1251_fw_wakeup(struct wl1251 *wl) |
130 | { |
131 | u32 elp_reg; |
132 | |
133 | elp_reg = ELPCTRL_WAKE_UP; |
134 | wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, val: elp_reg); |
135 | elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR); |
136 | |
137 | if (!(elp_reg & ELPCTRL_WLAN_READY)) |
138 | wl1251_warning("WLAN not ready" ); |
139 | } |
140 | |
141 | static int wl1251_chip_wakeup(struct wl1251 *wl) |
142 | { |
143 | int ret; |
144 | |
145 | ret = wl1251_power_on(wl); |
146 | if (ret < 0) |
147 | return ret; |
148 | |
149 | msleep(WL1251_POWER_ON_SLEEP); |
150 | wl->if_ops->reset(wl); |
151 | |
152 | /* We don't need a real memory partition here, because we only want |
153 | * to use the registers at this point. */ |
154 | wl1251_set_partition(wl, |
155 | part_start: 0x00000000, |
156 | part_size: 0x00000000, |
157 | REGISTERS_BASE, |
158 | REGISTERS_DOWN_SIZE); |
159 | |
160 | /* ELP module wake up */ |
161 | wl1251_fw_wakeup(wl); |
162 | |
163 | /* whal_FwCtrl_BootSm() */ |
164 | |
165 | /* 0. read chip id from CHIP_ID */ |
166 | wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B); |
167 | |
168 | /* 1. check if chip id is valid */ |
169 | |
170 | switch (wl->chip_id) { |
171 | case CHIP_ID_1251_PG12: |
172 | wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)" , |
173 | wl->chip_id); |
174 | break; |
175 | case CHIP_ID_1251_PG11: |
176 | wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)" , |
177 | wl->chip_id); |
178 | break; |
179 | case CHIP_ID_1251_PG10: |
180 | default: |
181 | wl1251_error("unsupported chip id: 0x%x" , wl->chip_id); |
182 | ret = -ENODEV; |
183 | goto out; |
184 | } |
185 | |
186 | if (wl->fw == NULL) { |
187 | ret = wl1251_fetch_firmware(wl); |
188 | if (ret < 0) |
189 | goto out; |
190 | } |
191 | |
192 | out: |
193 | return ret; |
194 | } |
195 | |
196 | #define WL1251_IRQ_LOOP_COUNT 10 |
197 | static void wl1251_irq_work(struct work_struct *work) |
198 | { |
199 | u32 intr, ctr = WL1251_IRQ_LOOP_COUNT; |
200 | struct wl1251 *wl = |
201 | container_of(work, struct wl1251, irq_work); |
202 | int ret; |
203 | |
204 | mutex_lock(&wl->mutex); |
205 | |
206 | wl1251_debug(DEBUG_IRQ, "IRQ work" ); |
207 | |
208 | if (wl->state == WL1251_STATE_OFF) |
209 | goto out; |
210 | |
211 | ret = wl1251_ps_elp_wakeup(wl); |
212 | if (ret < 0) |
213 | goto out; |
214 | |
215 | wl1251_reg_write32(wl, addr: ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL); |
216 | |
217 | intr = wl1251_reg_read32(wl, addr: ACX_REG_INTERRUPT_CLEAR); |
218 | wl1251_debug(DEBUG_IRQ, "intr: 0x%x" , intr); |
219 | |
220 | do { |
221 | if (wl->data_path) { |
222 | wl->rx_counter = wl1251_mem_read32( |
223 | wl, addr: wl->data_path->rx_control_addr); |
224 | |
225 | /* We handle a frmware bug here */ |
226 | switch ((wl->rx_counter - wl->rx_handled) & 0xf) { |
227 | case 0: |
228 | wl1251_debug(DEBUG_IRQ, |
229 | "RX: FW and host in sync" ); |
230 | intr &= ~WL1251_ACX_INTR_RX0_DATA; |
231 | intr &= ~WL1251_ACX_INTR_RX1_DATA; |
232 | break; |
233 | case 1: |
234 | wl1251_debug(DEBUG_IRQ, "RX: FW +1" ); |
235 | intr |= WL1251_ACX_INTR_RX0_DATA; |
236 | intr &= ~WL1251_ACX_INTR_RX1_DATA; |
237 | break; |
238 | case 2: |
239 | wl1251_debug(DEBUG_IRQ, "RX: FW +2" ); |
240 | intr |= WL1251_ACX_INTR_RX0_DATA; |
241 | intr |= WL1251_ACX_INTR_RX1_DATA; |
242 | break; |
243 | default: |
244 | wl1251_warning( |
245 | "RX: FW and host out of sync: %d" , |
246 | wl->rx_counter - wl->rx_handled); |
247 | break; |
248 | } |
249 | |
250 | wl->rx_handled = wl->rx_counter; |
251 | |
252 | wl1251_debug(DEBUG_IRQ, "RX counter: %d" , |
253 | wl->rx_counter); |
254 | } |
255 | |
256 | intr &= wl->intr_mask; |
257 | |
258 | if (intr == 0) { |
259 | wl1251_debug(DEBUG_IRQ, "INTR is 0" ); |
260 | goto out_sleep; |
261 | } |
262 | |
263 | if (intr & WL1251_ACX_INTR_RX0_DATA) { |
264 | wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA" ); |
265 | wl1251_rx(wl); |
266 | } |
267 | |
268 | if (intr & WL1251_ACX_INTR_RX1_DATA) { |
269 | wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA" ); |
270 | wl1251_rx(wl); |
271 | } |
272 | |
273 | if (intr & WL1251_ACX_INTR_TX_RESULT) { |
274 | wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT" ); |
275 | wl1251_tx_complete(wl); |
276 | } |
277 | |
278 | if (intr & WL1251_ACX_INTR_EVENT_A) { |
279 | wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A" ); |
280 | wl1251_event_handle(wl, mbox: 0); |
281 | } |
282 | |
283 | if (intr & WL1251_ACX_INTR_EVENT_B) { |
284 | wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B" ); |
285 | wl1251_event_handle(wl, mbox: 1); |
286 | } |
287 | |
288 | if (intr & WL1251_ACX_INTR_INIT_COMPLETE) |
289 | wl1251_debug(DEBUG_IRQ, |
290 | "WL1251_ACX_INTR_INIT_COMPLETE" ); |
291 | |
292 | if (--ctr == 0) |
293 | break; |
294 | |
295 | intr = wl1251_reg_read32(wl, addr: ACX_REG_INTERRUPT_CLEAR); |
296 | } while (intr); |
297 | |
298 | out_sleep: |
299 | wl1251_reg_write32(wl, addr: ACX_REG_INTERRUPT_MASK, val: ~(wl->intr_mask)); |
300 | wl1251_ps_elp_sleep(wl); |
301 | |
302 | out: |
303 | mutex_unlock(lock: &wl->mutex); |
304 | } |
305 | |
306 | static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel, |
307 | u16 beacon_interval, u8 dtim_period) |
308 | { |
309 | int ret; |
310 | |
311 | ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE, |
312 | DEFAULT_HW_GEN_MODULATION_TYPE, |
313 | mgt_rate: wl->tx_mgmt_frm_rate, |
314 | mgt_mod: wl->tx_mgmt_frm_mod); |
315 | if (ret < 0) |
316 | goto out; |
317 | |
318 | /* |
319 | * Join command applies filters, and if we are not associated, |
320 | * BSSID filter must be disabled for association to work. |
321 | */ |
322 | if (is_zero_ether_addr(addr: wl->bssid)) |
323 | wl->rx_config &= ~CFG_BSSID_FILTER_EN; |
324 | |
325 | ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval, |
326 | dtim_interval: dtim_period); |
327 | if (ret < 0) |
328 | goto out; |
329 | |
330 | ret = wl1251_event_wait(wl, mask: JOIN_EVENT_COMPLETE_ID, timeout_ms: 100); |
331 | if (ret < 0) |
332 | wl1251_warning("join timeout" ); |
333 | |
334 | out: |
335 | return ret; |
336 | } |
337 | |
338 | static void wl1251_op_tx(struct ieee80211_hw *hw, |
339 | struct ieee80211_tx_control *control, |
340 | struct sk_buff *skb) |
341 | { |
342 | struct wl1251 *wl = hw->priv; |
343 | unsigned long flags; |
344 | |
345 | skb_queue_tail(list: &wl->tx_queue, newsk: skb); |
346 | |
347 | /* |
348 | * The chip specific setup must run before the first TX packet - |
349 | * before that, the tx_work will not be initialized! |
350 | */ |
351 | |
352 | ieee80211_queue_work(hw: wl->hw, work: &wl->tx_work); |
353 | |
354 | /* |
355 | * The workqueue is slow to process the tx_queue and we need stop |
356 | * the queue here, otherwise the queue will get too long. |
357 | */ |
358 | if (skb_queue_len(list_: &wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) { |
359 | wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues" ); |
360 | |
361 | spin_lock_irqsave(&wl->wl_lock, flags); |
362 | ieee80211_stop_queues(hw: wl->hw); |
363 | wl->tx_queue_stopped = true; |
364 | spin_unlock_irqrestore(lock: &wl->wl_lock, flags); |
365 | } |
366 | } |
367 | |
368 | static int wl1251_op_start(struct ieee80211_hw *hw) |
369 | { |
370 | struct wl1251 *wl = hw->priv; |
371 | struct wiphy *wiphy = hw->wiphy; |
372 | int ret = 0; |
373 | |
374 | wl1251_debug(DEBUG_MAC80211, "mac80211 start" ); |
375 | |
376 | mutex_lock(&wl->mutex); |
377 | |
378 | if (wl->state != WL1251_STATE_OFF) { |
379 | wl1251_error("cannot start because not in off state: %d" , |
380 | wl->state); |
381 | ret = -EBUSY; |
382 | goto out; |
383 | } |
384 | |
385 | ret = wl1251_chip_wakeup(wl); |
386 | if (ret < 0) |
387 | goto out; |
388 | |
389 | ret = wl1251_boot(wl); |
390 | if (ret < 0) |
391 | goto out; |
392 | |
393 | ret = wl1251_hw_init(wl); |
394 | if (ret < 0) |
395 | goto out; |
396 | |
397 | ret = wl1251_acx_station_id(wl); |
398 | if (ret < 0) |
399 | goto out; |
400 | |
401 | wl->state = WL1251_STATE_ON; |
402 | |
403 | wl1251_info("firmware booted (%s)" , wl->fw_ver); |
404 | |
405 | /* update hw/fw version info in wiphy struct */ |
406 | wiphy->hw_version = wl->chip_id; |
407 | strscpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version)); |
408 | |
409 | out: |
410 | if (ret < 0) |
411 | wl1251_power_off(wl); |
412 | |
413 | mutex_unlock(lock: &wl->mutex); |
414 | |
415 | return ret; |
416 | } |
417 | |
418 | static void wl1251_op_stop(struct ieee80211_hw *hw) |
419 | { |
420 | struct wl1251 *wl = hw->priv; |
421 | |
422 | wl1251_info("down" ); |
423 | |
424 | wl1251_debug(DEBUG_MAC80211, "mac80211 stop" ); |
425 | |
426 | mutex_lock(&wl->mutex); |
427 | |
428 | WARN_ON(wl->state != WL1251_STATE_ON); |
429 | |
430 | if (wl->scanning) { |
431 | struct cfg80211_scan_info info = { |
432 | .aborted = true, |
433 | }; |
434 | |
435 | ieee80211_scan_completed(hw: wl->hw, info: &info); |
436 | wl->scanning = false; |
437 | } |
438 | |
439 | wl->state = WL1251_STATE_OFF; |
440 | |
441 | wl1251_disable_interrupts(wl); |
442 | |
443 | mutex_unlock(lock: &wl->mutex); |
444 | |
445 | cancel_work_sync(work: &wl->irq_work); |
446 | cancel_work_sync(work: &wl->tx_work); |
447 | cancel_delayed_work_sync(dwork: &wl->elp_work); |
448 | |
449 | mutex_lock(&wl->mutex); |
450 | |
451 | /* let's notify MAC80211 about the remaining pending TX frames */ |
452 | wl1251_tx_flush(wl); |
453 | wl1251_power_off(wl); |
454 | |
455 | eth_zero_addr(addr: wl->bssid); |
456 | wl->listen_int = 1; |
457 | wl->bss_type = MAX_BSS_TYPE; |
458 | |
459 | wl->data_in_count = 0; |
460 | wl->rx_counter = 0; |
461 | wl->rx_handled = 0; |
462 | wl->rx_current_buffer = 0; |
463 | wl->rx_last_id = 0; |
464 | wl->next_tx_complete = 0; |
465 | wl->elp = false; |
466 | wl->station_mode = STATION_ACTIVE_MODE; |
467 | wl->psm_entry_retry = 0; |
468 | wl->tx_queue_stopped = false; |
469 | wl->power_level = WL1251_DEFAULT_POWER_LEVEL; |
470 | wl->rssi_thold = 0; |
471 | wl->channel = WL1251_DEFAULT_CHANNEL; |
472 | wl->monitor_present = false; |
473 | wl->joined = false; |
474 | |
475 | wl1251_debugfs_reset(wl); |
476 | |
477 | mutex_unlock(lock: &wl->mutex); |
478 | } |
479 | |
480 | static int wl1251_op_add_interface(struct ieee80211_hw *hw, |
481 | struct ieee80211_vif *vif) |
482 | { |
483 | struct wl1251 *wl = hw->priv; |
484 | int ret = 0; |
485 | |
486 | vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | |
487 | IEEE80211_VIF_SUPPORTS_UAPSD | |
488 | IEEE80211_VIF_SUPPORTS_CQM_RSSI; |
489 | |
490 | wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM" , |
491 | vif->type, vif->addr); |
492 | |
493 | mutex_lock(&wl->mutex); |
494 | if (wl->vif) { |
495 | ret = -EBUSY; |
496 | goto out; |
497 | } |
498 | |
499 | wl->vif = vif; |
500 | |
501 | switch (vif->type) { |
502 | case NL80211_IFTYPE_STATION: |
503 | wl->bss_type = BSS_TYPE_STA_BSS; |
504 | break; |
505 | case NL80211_IFTYPE_ADHOC: |
506 | wl->bss_type = BSS_TYPE_IBSS; |
507 | break; |
508 | default: |
509 | ret = -EOPNOTSUPP; |
510 | goto out; |
511 | } |
512 | |
513 | if (!ether_addr_equal_unaligned(addr1: wl->mac_addr, addr2: vif->addr)) { |
514 | memcpy(wl->mac_addr, vif->addr, ETH_ALEN); |
515 | SET_IEEE80211_PERM_ADDR(hw: wl->hw, addr: wl->mac_addr); |
516 | ret = wl1251_acx_station_id(wl); |
517 | if (ret < 0) |
518 | goto out; |
519 | } |
520 | |
521 | out: |
522 | mutex_unlock(lock: &wl->mutex); |
523 | return ret; |
524 | } |
525 | |
526 | static void wl1251_op_remove_interface(struct ieee80211_hw *hw, |
527 | struct ieee80211_vif *vif) |
528 | { |
529 | struct wl1251 *wl = hw->priv; |
530 | |
531 | mutex_lock(&wl->mutex); |
532 | wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface" ); |
533 | wl->vif = NULL; |
534 | eth_zero_addr(addr: wl->bssid); |
535 | mutex_unlock(lock: &wl->mutex); |
536 | } |
537 | |
538 | static int wl1251_build_null_data(struct wl1251 *wl) |
539 | { |
540 | struct sk_buff *skb = NULL; |
541 | int size; |
542 | void *ptr; |
543 | int ret = -ENOMEM; |
544 | |
545 | if (wl->bss_type == BSS_TYPE_IBSS) { |
546 | size = sizeof(struct wl12xx_null_data_template); |
547 | ptr = NULL; |
548 | } else { |
549 | skb = ieee80211_nullfunc_get(hw: wl->hw, vif: wl->vif, link_id: -1, qos_ok: false); |
550 | if (!skb) |
551 | goto out; |
552 | size = skb->len; |
553 | ptr = skb->data; |
554 | } |
555 | |
556 | ret = wl1251_cmd_template_set(wl, cmd_id: CMD_NULL_DATA, buf: ptr, buf_len: size); |
557 | |
558 | out: |
559 | dev_kfree_skb(skb); |
560 | if (ret) |
561 | wl1251_warning("cmd build null data failed: %d" , ret); |
562 | |
563 | return ret; |
564 | } |
565 | |
566 | static int wl1251_build_qos_null_data(struct wl1251 *wl) |
567 | { |
568 | struct ieee80211_qos_hdr template; |
569 | |
570 | memset(&template, 0, sizeof(template)); |
571 | |
572 | memcpy(template.addr1, wl->bssid, ETH_ALEN); |
573 | memcpy(template.addr2, wl->mac_addr, ETH_ALEN); |
574 | memcpy(template.addr3, wl->bssid, ETH_ALEN); |
575 | |
576 | template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | |
577 | IEEE80211_STYPE_QOS_NULLFUNC | |
578 | IEEE80211_FCTL_TODS); |
579 | |
580 | /* FIXME: not sure what priority to use here */ |
581 | template.qos_ctrl = cpu_to_le16(0); |
582 | |
583 | return wl1251_cmd_template_set(wl, cmd_id: CMD_QOS_NULL_DATA, buf: &template, |
584 | buf_len: sizeof(template)); |
585 | } |
586 | |
587 | static bool wl1251_can_do_pm(struct ieee80211_conf *conf, struct wl1251 *wl) |
588 | { |
589 | return (conf->flags & IEEE80211_CONF_PS) && !wl->monitor_present; |
590 | } |
591 | |
592 | static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) |
593 | { |
594 | struct wl1251 *wl = hw->priv; |
595 | struct ieee80211_conf *conf = &hw->conf; |
596 | int channel, ret = 0; |
597 | |
598 | channel = ieee80211_frequency_to_channel( |
599 | freq: conf->chandef.chan->center_freq); |
600 | |
601 | wl1251_debug(DEBUG_MAC80211, |
602 | "mac80211 config ch %d monitor %s psm %s power %d" , |
603 | channel, |
604 | conf->flags & IEEE80211_CONF_MONITOR ? "on" : "off" , |
605 | conf->flags & IEEE80211_CONF_PS ? "on" : "off" , |
606 | conf->power_level); |
607 | |
608 | mutex_lock(&wl->mutex); |
609 | |
610 | ret = wl1251_ps_elp_wakeup(wl); |
611 | if (ret < 0) |
612 | goto out; |
613 | |
614 | if (changed & IEEE80211_CONF_CHANGE_MONITOR) { |
615 | u32 mode; |
616 | |
617 | if (conf->flags & IEEE80211_CONF_MONITOR) { |
618 | wl->monitor_present = true; |
619 | mode = DF_SNIFF_MODE_ENABLE | DF_ENCRYPTION_DISABLE; |
620 | } else { |
621 | wl->monitor_present = false; |
622 | mode = 0; |
623 | } |
624 | |
625 | ret = wl1251_acx_feature_cfg(wl, data_flow_options: mode); |
626 | if (ret < 0) |
627 | goto out_sleep; |
628 | } |
629 | |
630 | if (channel != wl->channel) { |
631 | wl->channel = channel; |
632 | |
633 | /* |
634 | * Use ENABLE_RX command for channel switching when no |
635 | * interface is present (monitor mode only). |
636 | * This leaves the tx path disabled in firmware, whereas |
637 | * the usual JOIN command seems to transmit some frames |
638 | * at firmware level. |
639 | */ |
640 | if (wl->vif == NULL) { |
641 | wl->joined = false; |
642 | ret = wl1251_cmd_data_path_rx(wl, channel: wl->channel, enable: 1); |
643 | } else { |
644 | ret = wl1251_join(wl, bss_type: wl->bss_type, channel: wl->channel, |
645 | beacon_interval: wl->beacon_int, dtim_period: wl->dtim_period); |
646 | } |
647 | if (ret < 0) |
648 | goto out_sleep; |
649 | } |
650 | |
651 | if (wl1251_can_do_pm(conf, wl) && !wl->psm_requested) { |
652 | wl1251_debug(DEBUG_PSM, "psm enabled" ); |
653 | |
654 | wl->psm_requested = true; |
655 | |
656 | wl->dtim_period = conf->ps_dtim_period; |
657 | |
658 | ret = wl1251_acx_wr_tbtt_and_dtim(wl, tbtt: wl->beacon_int, |
659 | dtim: wl->dtim_period); |
660 | |
661 | /* |
662 | * mac80211 enables PSM only if we're already associated. |
663 | */ |
664 | ret = wl1251_ps_set_mode(wl, mode: STATION_POWER_SAVE_MODE); |
665 | if (ret < 0) |
666 | goto out_sleep; |
667 | } else if (!wl1251_can_do_pm(conf, wl) && wl->psm_requested) { |
668 | wl1251_debug(DEBUG_PSM, "psm disabled" ); |
669 | |
670 | wl->psm_requested = false; |
671 | |
672 | if (wl->station_mode != STATION_ACTIVE_MODE) { |
673 | ret = wl1251_ps_set_mode(wl, mode: STATION_ACTIVE_MODE); |
674 | if (ret < 0) |
675 | goto out_sleep; |
676 | } |
677 | } |
678 | |
679 | if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) { |
680 | if (conf->flags & IEEE80211_CONF_IDLE) { |
681 | ret = wl1251_ps_set_mode(wl, mode: STATION_IDLE); |
682 | if (ret < 0) |
683 | goto out_sleep; |
684 | } else { |
685 | ret = wl1251_ps_set_mode(wl, mode: STATION_ACTIVE_MODE); |
686 | if (ret < 0) |
687 | goto out_sleep; |
688 | ret = wl1251_join(wl, bss_type: wl->bss_type, channel: wl->channel, |
689 | beacon_interval: wl->beacon_int, dtim_period: wl->dtim_period); |
690 | if (ret < 0) |
691 | goto out_sleep; |
692 | } |
693 | } |
694 | |
695 | if (conf->power_level != wl->power_level) { |
696 | ret = wl1251_acx_tx_power(wl, power: conf->power_level); |
697 | if (ret < 0) |
698 | goto out_sleep; |
699 | |
700 | wl->power_level = conf->power_level; |
701 | } |
702 | |
703 | out_sleep: |
704 | wl1251_ps_elp_sleep(wl); |
705 | |
706 | out: |
707 | mutex_unlock(lock: &wl->mutex); |
708 | |
709 | return ret; |
710 | } |
711 | |
712 | struct wl1251_filter_params { |
713 | bool enabled; |
714 | int mc_list_length; |
715 | u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN]; |
716 | }; |
717 | |
718 | static u64 wl1251_op_prepare_multicast(struct ieee80211_hw *hw, |
719 | struct netdev_hw_addr_list *mc_list) |
720 | { |
721 | struct wl1251_filter_params *fp; |
722 | struct netdev_hw_addr *ha; |
723 | struct wl1251 *wl = hw->priv; |
724 | |
725 | if (unlikely(wl->state == WL1251_STATE_OFF)) |
726 | return 0; |
727 | |
728 | fp = kzalloc(size: sizeof(*fp), GFP_ATOMIC); |
729 | if (!fp) { |
730 | wl1251_error("Out of memory setting filters." ); |
731 | return 0; |
732 | } |
733 | |
734 | /* update multicast filtering parameters */ |
735 | fp->mc_list_length = 0; |
736 | if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) { |
737 | fp->enabled = false; |
738 | } else { |
739 | fp->enabled = true; |
740 | netdev_hw_addr_list_for_each(ha, mc_list) { |
741 | memcpy(fp->mc_list[fp->mc_list_length], |
742 | ha->addr, ETH_ALEN); |
743 | fp->mc_list_length++; |
744 | } |
745 | } |
746 | |
747 | return (u64)(unsigned long)fp; |
748 | } |
749 | |
750 | #define WL1251_SUPPORTED_FILTERS (FIF_ALLMULTI | \ |
751 | FIF_FCSFAIL | \ |
752 | FIF_BCN_PRBRESP_PROMISC | \ |
753 | FIF_CONTROL | \ |
754 | FIF_OTHER_BSS | \ |
755 | FIF_PROBE_REQ) |
756 | |
757 | static void wl1251_op_configure_filter(struct ieee80211_hw *hw, |
758 | unsigned int changed, |
759 | unsigned int *total, u64 multicast) |
760 | { |
761 | struct wl1251_filter_params *fp = (void *)(unsigned long)multicast; |
762 | struct wl1251 *wl = hw->priv; |
763 | int ret; |
764 | |
765 | wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter" ); |
766 | |
767 | *total &= WL1251_SUPPORTED_FILTERS; |
768 | changed &= WL1251_SUPPORTED_FILTERS; |
769 | |
770 | if (changed == 0) { |
771 | /* no filters which we support changed */ |
772 | kfree(objp: fp); |
773 | return; |
774 | } |
775 | |
776 | mutex_lock(&wl->mutex); |
777 | |
778 | wl->rx_config = WL1251_DEFAULT_RX_CONFIG; |
779 | wl->rx_filter = WL1251_DEFAULT_RX_FILTER; |
780 | |
781 | if (*total & FIF_ALLMULTI) |
782 | /* |
783 | * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive |
784 | * all multicast frames |
785 | */ |
786 | wl->rx_config &= ~CFG_MC_FILTER_EN; |
787 | if (*total & FIF_FCSFAIL) |
788 | wl->rx_filter |= CFG_RX_FCS_ERROR; |
789 | if (*total & FIF_BCN_PRBRESP_PROMISC) { |
790 | wl->rx_config &= ~CFG_BSSID_FILTER_EN; |
791 | wl->rx_config &= ~CFG_SSID_FILTER_EN; |
792 | } |
793 | if (*total & FIF_CONTROL) |
794 | wl->rx_filter |= CFG_RX_CTL_EN; |
795 | if (*total & FIF_OTHER_BSS || is_zero_ether_addr(addr: wl->bssid)) |
796 | wl->rx_config &= ~CFG_BSSID_FILTER_EN; |
797 | if (*total & FIF_PROBE_REQ) |
798 | wl->rx_filter |= CFG_RX_PREQ_EN; |
799 | |
800 | if (wl->state == WL1251_STATE_OFF) |
801 | goto out; |
802 | |
803 | ret = wl1251_ps_elp_wakeup(wl); |
804 | if (ret < 0) |
805 | goto out; |
806 | |
807 | if (*total & FIF_ALLMULTI) |
808 | ret = wl1251_acx_group_address_tbl(wl, enable: false, NULL, mc_list_len: 0); |
809 | else if (fp) |
810 | ret = wl1251_acx_group_address_tbl(wl, enable: fp->enabled, |
811 | mc_list: fp->mc_list, |
812 | mc_list_len: fp->mc_list_length); |
813 | if (ret < 0) |
814 | goto out; |
815 | |
816 | /* send filters to firmware */ |
817 | wl1251_acx_rx_config(wl, config: wl->rx_config, filter: wl->rx_filter); |
818 | |
819 | wl1251_ps_elp_sleep(wl); |
820 | |
821 | out: |
822 | mutex_unlock(lock: &wl->mutex); |
823 | kfree(objp: fp); |
824 | } |
825 | |
826 | /* HW encryption */ |
827 | static int wl1251_set_key_type(struct wl1251 *wl, |
828 | struct wl1251_cmd_set_keys *key, |
829 | enum set_key_cmd cmd, |
830 | struct ieee80211_key_conf *mac80211_key, |
831 | const u8 *addr) |
832 | { |
833 | switch (mac80211_key->cipher) { |
834 | case WLAN_CIPHER_SUITE_WEP40: |
835 | case WLAN_CIPHER_SUITE_WEP104: |
836 | if (is_broadcast_ether_addr(addr)) |
837 | key->key_type = KEY_WEP_DEFAULT; |
838 | else |
839 | key->key_type = KEY_WEP_ADDR; |
840 | |
841 | mac80211_key->hw_key_idx = mac80211_key->keyidx; |
842 | break; |
843 | case WLAN_CIPHER_SUITE_TKIP: |
844 | if (is_broadcast_ether_addr(addr)) |
845 | key->key_type = KEY_TKIP_MIC_GROUP; |
846 | else |
847 | key->key_type = KEY_TKIP_MIC_PAIRWISE; |
848 | |
849 | mac80211_key->hw_key_idx = mac80211_key->keyidx; |
850 | break; |
851 | case WLAN_CIPHER_SUITE_CCMP: |
852 | if (is_broadcast_ether_addr(addr)) |
853 | key->key_type = KEY_AES_GROUP; |
854 | else |
855 | key->key_type = KEY_AES_PAIRWISE; |
856 | mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
857 | break; |
858 | default: |
859 | wl1251_error("Unknown key cipher 0x%x" , mac80211_key->cipher); |
860 | return -EOPNOTSUPP; |
861 | } |
862 | |
863 | return 0; |
864 | } |
865 | |
866 | static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
867 | struct ieee80211_vif *vif, |
868 | struct ieee80211_sta *sta, |
869 | struct ieee80211_key_conf *key) |
870 | { |
871 | struct wl1251 *wl = hw->priv; |
872 | struct wl1251_cmd_set_keys *wl_cmd; |
873 | const u8 *addr; |
874 | int ret; |
875 | |
876 | static const u8 bcast_addr[ETH_ALEN] = |
877 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
878 | |
879 | wl1251_debug(DEBUG_MAC80211, "mac80211 set key" ); |
880 | |
881 | wl_cmd = kzalloc(size: sizeof(*wl_cmd), GFP_KERNEL); |
882 | if (!wl_cmd) { |
883 | ret = -ENOMEM; |
884 | goto out; |
885 | } |
886 | |
887 | addr = sta ? sta->addr : bcast_addr; |
888 | |
889 | wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x" , cmd); |
890 | wl1251_dump(DEBUG_CRYPT, "ADDR: " , addr, ETH_ALEN); |
891 | wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x" , |
892 | key->cipher, key->keyidx, key->keylen, key->flags); |
893 | wl1251_dump(DEBUG_CRYPT, "KEY: " , key->key, key->keylen); |
894 | |
895 | if (is_zero_ether_addr(addr)) { |
896 | /* We dont support TX only encryption */ |
897 | ret = -EOPNOTSUPP; |
898 | goto out; |
899 | } |
900 | |
901 | mutex_lock(&wl->mutex); |
902 | |
903 | switch (cmd) { |
904 | case SET_KEY: |
905 | if (wl->monitor_present) { |
906 | ret = -EOPNOTSUPP; |
907 | goto out_unlock; |
908 | } |
909 | wl_cmd->key_action = KEY_ADD_OR_REPLACE; |
910 | break; |
911 | case DISABLE_KEY: |
912 | wl_cmd->key_action = KEY_REMOVE; |
913 | break; |
914 | default: |
915 | wl1251_error("Unsupported key cmd 0x%x" , cmd); |
916 | break; |
917 | } |
918 | |
919 | ret = wl1251_ps_elp_wakeup(wl); |
920 | if (ret < 0) |
921 | goto out_unlock; |
922 | |
923 | ret = wl1251_set_key_type(wl, key: wl_cmd, cmd, mac80211_key: key, addr); |
924 | if (ret < 0) { |
925 | wl1251_error("Set KEY type failed" ); |
926 | goto out_sleep; |
927 | } |
928 | |
929 | if (wl_cmd->key_type != KEY_WEP_DEFAULT) |
930 | memcpy(wl_cmd->addr, addr, ETH_ALEN); |
931 | |
932 | if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || |
933 | (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { |
934 | /* |
935 | * We get the key in the following form: |
936 | * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) |
937 | * but the target is expecting: |
938 | * TKIP - RX MIC - TX MIC |
939 | */ |
940 | memcpy(wl_cmd->key, key->key, 16); |
941 | memcpy(wl_cmd->key + 16, key->key + 24, 8); |
942 | memcpy(wl_cmd->key + 24, key->key + 16, 8); |
943 | |
944 | } else { |
945 | memcpy(wl_cmd->key, key->key, key->keylen); |
946 | } |
947 | wl_cmd->key_size = key->keylen; |
948 | |
949 | wl_cmd->id = key->keyidx; |
950 | wl_cmd->ssid_profile = 0; |
951 | |
952 | wl1251_dump(DEBUG_CRYPT, "TARGET KEY: " , wl_cmd, sizeof(*wl_cmd)); |
953 | |
954 | ret = wl1251_cmd_send(wl, type: CMD_SET_KEYS, buf: wl_cmd, buf_len: sizeof(*wl_cmd)); |
955 | if (ret < 0) { |
956 | wl1251_warning("could not set keys" ); |
957 | goto out_sleep; |
958 | } |
959 | |
960 | out_sleep: |
961 | wl1251_ps_elp_sleep(wl); |
962 | |
963 | out_unlock: |
964 | mutex_unlock(lock: &wl->mutex); |
965 | |
966 | out: |
967 | kfree(objp: wl_cmd); |
968 | |
969 | return ret; |
970 | } |
971 | |
972 | static int wl1251_op_hw_scan(struct ieee80211_hw *hw, |
973 | struct ieee80211_vif *vif, |
974 | struct ieee80211_scan_request *hw_req) |
975 | { |
976 | struct cfg80211_scan_request *req = &hw_req->req; |
977 | struct wl1251 *wl = hw->priv; |
978 | struct sk_buff *skb; |
979 | size_t ssid_len = 0; |
980 | u8 *ssid = NULL; |
981 | int ret; |
982 | |
983 | wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan" ); |
984 | |
985 | if (req->n_ssids) { |
986 | ssid = req->ssids[0].ssid; |
987 | ssid_len = req->ssids[0].ssid_len; |
988 | } |
989 | |
990 | mutex_lock(&wl->mutex); |
991 | |
992 | if (wl->scanning) { |
993 | wl1251_debug(DEBUG_SCAN, "scan already in progress" ); |
994 | ret = -EINVAL; |
995 | goto out; |
996 | } |
997 | |
998 | ret = wl1251_ps_elp_wakeup(wl); |
999 | if (ret < 0) |
1000 | goto out; |
1001 | |
1002 | if (hw->conf.flags & IEEE80211_CONF_IDLE) { |
1003 | ret = wl1251_ps_set_mode(wl, mode: STATION_ACTIVE_MODE); |
1004 | if (ret < 0) |
1005 | goto out_sleep; |
1006 | ret = wl1251_join(wl, bss_type: wl->bss_type, channel: wl->channel, |
1007 | beacon_interval: wl->beacon_int, dtim_period: wl->dtim_period); |
1008 | if (ret < 0) |
1009 | goto out_sleep; |
1010 | } |
1011 | |
1012 | skb = ieee80211_probereq_get(hw: wl->hw, src_addr: wl->vif->addr, ssid, ssid_len, |
1013 | tailroom: req->ie_len); |
1014 | if (!skb) { |
1015 | ret = -ENOMEM; |
1016 | goto out_idle; |
1017 | } |
1018 | if (req->ie_len) |
1019 | skb_put_data(skb, data: req->ie, len: req->ie_len); |
1020 | |
1021 | ret = wl1251_cmd_template_set(wl, cmd_id: CMD_PROBE_REQ, buf: skb->data, |
1022 | buf_len: skb->len); |
1023 | dev_kfree_skb(skb); |
1024 | if (ret < 0) |
1025 | goto out_idle; |
1026 | |
1027 | ret = wl1251_cmd_trigger_scan_to(wl, timeout: 0); |
1028 | if (ret < 0) |
1029 | goto out_idle; |
1030 | |
1031 | wl->scanning = true; |
1032 | |
1033 | ret = wl1251_cmd_scan(wl, ssid, ssid_len, channels: req->channels, |
1034 | n_channels: req->n_channels, WL1251_SCAN_NUM_PROBES); |
1035 | if (ret < 0) { |
1036 | wl1251_debug(DEBUG_SCAN, "scan failed %d" , ret); |
1037 | wl->scanning = false; |
1038 | goto out_idle; |
1039 | } |
1040 | goto out_sleep; |
1041 | |
1042 | out_idle: |
1043 | if (hw->conf.flags & IEEE80211_CONF_IDLE) |
1044 | ret = wl1251_ps_set_mode(wl, mode: STATION_IDLE); |
1045 | out_sleep: |
1046 | wl1251_ps_elp_sleep(wl); |
1047 | |
1048 | out: |
1049 | mutex_unlock(lock: &wl->mutex); |
1050 | |
1051 | return ret; |
1052 | } |
1053 | |
1054 | static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) |
1055 | { |
1056 | struct wl1251 *wl = hw->priv; |
1057 | int ret; |
1058 | |
1059 | mutex_lock(&wl->mutex); |
1060 | |
1061 | ret = wl1251_ps_elp_wakeup(wl); |
1062 | if (ret < 0) |
1063 | goto out; |
1064 | |
1065 | ret = wl1251_acx_rts_threshold(wl, rts_threshold: (u16) value); |
1066 | if (ret < 0) |
1067 | wl1251_warning("wl1251_op_set_rts_threshold failed: %d" , ret); |
1068 | |
1069 | wl1251_ps_elp_sleep(wl); |
1070 | |
1071 | out: |
1072 | mutex_unlock(lock: &wl->mutex); |
1073 | |
1074 | return ret; |
1075 | } |
1076 | |
1077 | static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, |
1078 | struct ieee80211_vif *vif, |
1079 | struct ieee80211_bss_conf *bss_conf, |
1080 | u64 changed) |
1081 | { |
1082 | struct wl1251 *wl = hw->priv; |
1083 | struct sk_buff *beacon, *skb; |
1084 | bool enable; |
1085 | int ret; |
1086 | |
1087 | wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed" ); |
1088 | |
1089 | mutex_lock(&wl->mutex); |
1090 | |
1091 | ret = wl1251_ps_elp_wakeup(wl); |
1092 | if (ret < 0) |
1093 | goto out; |
1094 | |
1095 | if (changed & BSS_CHANGED_CQM) { |
1096 | ret = wl1251_acx_low_rssi(wl, threshold: bss_conf->cqm_rssi_thold, |
1097 | WL1251_DEFAULT_LOW_RSSI_WEIGHT, |
1098 | WL1251_DEFAULT_LOW_RSSI_DEPTH, |
1099 | type: WL1251_ACX_LOW_RSSI_TYPE_EDGE); |
1100 | if (ret < 0) |
1101 | goto out; |
1102 | wl->rssi_thold = bss_conf->cqm_rssi_thold; |
1103 | } |
1104 | |
1105 | if ((changed & BSS_CHANGED_BSSID) && |
1106 | memcmp(p: wl->bssid, q: bss_conf->bssid, ETH_ALEN)) { |
1107 | memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); |
1108 | |
1109 | if (!is_zero_ether_addr(addr: wl->bssid)) { |
1110 | ret = wl1251_build_null_data(wl); |
1111 | if (ret < 0) |
1112 | goto out_sleep; |
1113 | |
1114 | ret = wl1251_build_qos_null_data(wl); |
1115 | if (ret < 0) |
1116 | goto out_sleep; |
1117 | |
1118 | ret = wl1251_join(wl, bss_type: wl->bss_type, channel: wl->channel, |
1119 | beacon_interval: wl->beacon_int, dtim_period: wl->dtim_period); |
1120 | if (ret < 0) |
1121 | goto out_sleep; |
1122 | } |
1123 | } |
1124 | |
1125 | if (changed & BSS_CHANGED_ASSOC) { |
1126 | if (vif->cfg.assoc) { |
1127 | wl->beacon_int = bss_conf->beacon_int; |
1128 | |
1129 | skb = ieee80211_pspoll_get(hw: wl->hw, vif: wl->vif); |
1130 | if (!skb) |
1131 | goto out_sleep; |
1132 | |
1133 | ret = wl1251_cmd_template_set(wl, cmd_id: CMD_PS_POLL, |
1134 | buf: skb->data, |
1135 | buf_len: skb->len); |
1136 | dev_kfree_skb(skb); |
1137 | if (ret < 0) |
1138 | goto out_sleep; |
1139 | |
1140 | ret = wl1251_acx_aid(wl, aid: vif->cfg.aid); |
1141 | if (ret < 0) |
1142 | goto out_sleep; |
1143 | } else { |
1144 | /* use defaults when not associated */ |
1145 | wl->beacon_int = WL1251_DEFAULT_BEACON_INT; |
1146 | wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; |
1147 | } |
1148 | } |
1149 | if (changed & BSS_CHANGED_ERP_SLOT) { |
1150 | if (bss_conf->use_short_slot) |
1151 | ret = wl1251_acx_slot(wl, slot_time: SLOT_TIME_SHORT); |
1152 | else |
1153 | ret = wl1251_acx_slot(wl, slot_time: SLOT_TIME_LONG); |
1154 | if (ret < 0) { |
1155 | wl1251_warning("Set slot time failed %d" , ret); |
1156 | goto out_sleep; |
1157 | } |
1158 | } |
1159 | |
1160 | if (changed & BSS_CHANGED_ERP_PREAMBLE) { |
1161 | if (bss_conf->use_short_preamble) |
1162 | wl1251_acx_set_preamble(wl, preamble: ACX_PREAMBLE_SHORT); |
1163 | else |
1164 | wl1251_acx_set_preamble(wl, preamble: ACX_PREAMBLE_LONG); |
1165 | } |
1166 | |
1167 | if (changed & BSS_CHANGED_ERP_CTS_PROT) { |
1168 | if (bss_conf->use_cts_prot) |
1169 | ret = wl1251_acx_cts_protect(wl, ctsprotect: CTSPROTECT_ENABLE); |
1170 | else |
1171 | ret = wl1251_acx_cts_protect(wl, ctsprotect: CTSPROTECT_DISABLE); |
1172 | if (ret < 0) { |
1173 | wl1251_warning("Set ctsprotect failed %d" , ret); |
1174 | goto out_sleep; |
1175 | } |
1176 | } |
1177 | |
1178 | if (changed & BSS_CHANGED_ARP_FILTER) { |
1179 | __be32 addr = vif->cfg.arp_addr_list[0]; |
1180 | WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS); |
1181 | |
1182 | enable = vif->cfg.arp_addr_cnt == 1 && vif->cfg.assoc; |
1183 | ret = wl1251_acx_arp_ip_filter(wl, enable, address: addr); |
1184 | if (ret < 0) |
1185 | goto out_sleep; |
1186 | } |
1187 | |
1188 | if (changed & BSS_CHANGED_BEACON) { |
1189 | beacon = ieee80211_beacon_get(hw, vif, link_id: 0); |
1190 | if (!beacon) |
1191 | goto out_sleep; |
1192 | |
1193 | ret = wl1251_cmd_template_set(wl, cmd_id: CMD_BEACON, buf: beacon->data, |
1194 | buf_len: beacon->len); |
1195 | |
1196 | if (ret < 0) { |
1197 | dev_kfree_skb(beacon); |
1198 | goto out_sleep; |
1199 | } |
1200 | |
1201 | ret = wl1251_cmd_template_set(wl, cmd_id: CMD_PROBE_RESP, buf: beacon->data, |
1202 | buf_len: beacon->len); |
1203 | |
1204 | dev_kfree_skb(beacon); |
1205 | |
1206 | if (ret < 0) |
1207 | goto out_sleep; |
1208 | |
1209 | ret = wl1251_join(wl, bss_type: wl->bss_type, channel: wl->channel, |
1210 | beacon_interval: wl->beacon_int, dtim_period: wl->dtim_period); |
1211 | |
1212 | if (ret < 0) |
1213 | goto out_sleep; |
1214 | } |
1215 | |
1216 | out_sleep: |
1217 | wl1251_ps_elp_sleep(wl); |
1218 | |
1219 | out: |
1220 | mutex_unlock(lock: &wl->mutex); |
1221 | } |
1222 | |
1223 | |
1224 | /* can't be const, mac80211 writes to this */ |
1225 | static struct ieee80211_rate wl1251_rates[] = { |
1226 | { .bitrate = 10, |
1227 | .hw_value = 0x1, |
1228 | .hw_value_short = 0x1, }, |
1229 | { .bitrate = 20, |
1230 | .hw_value = 0x2, |
1231 | .hw_value_short = 0x2, |
1232 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
1233 | { .bitrate = 55, |
1234 | .hw_value = 0x4, |
1235 | .hw_value_short = 0x4, |
1236 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
1237 | { .bitrate = 110, |
1238 | .hw_value = 0x20, |
1239 | .hw_value_short = 0x20, |
1240 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
1241 | { .bitrate = 60, |
1242 | .hw_value = 0x8, |
1243 | .hw_value_short = 0x8, }, |
1244 | { .bitrate = 90, |
1245 | .hw_value = 0x10, |
1246 | .hw_value_short = 0x10, }, |
1247 | { .bitrate = 120, |
1248 | .hw_value = 0x40, |
1249 | .hw_value_short = 0x40, }, |
1250 | { .bitrate = 180, |
1251 | .hw_value = 0x80, |
1252 | .hw_value_short = 0x80, }, |
1253 | { .bitrate = 240, |
1254 | .hw_value = 0x200, |
1255 | .hw_value_short = 0x200, }, |
1256 | { .bitrate = 360, |
1257 | .hw_value = 0x400, |
1258 | .hw_value_short = 0x400, }, |
1259 | { .bitrate = 480, |
1260 | .hw_value = 0x800, |
1261 | .hw_value_short = 0x800, }, |
1262 | { .bitrate = 540, |
1263 | .hw_value = 0x1000, |
1264 | .hw_value_short = 0x1000, }, |
1265 | }; |
1266 | |
1267 | /* can't be const, mac80211 writes to this */ |
1268 | static struct ieee80211_channel wl1251_channels[] = { |
1269 | { .hw_value = 1, .center_freq = 2412}, |
1270 | { .hw_value = 2, .center_freq = 2417}, |
1271 | { .hw_value = 3, .center_freq = 2422}, |
1272 | { .hw_value = 4, .center_freq = 2427}, |
1273 | { .hw_value = 5, .center_freq = 2432}, |
1274 | { .hw_value = 6, .center_freq = 2437}, |
1275 | { .hw_value = 7, .center_freq = 2442}, |
1276 | { .hw_value = 8, .center_freq = 2447}, |
1277 | { .hw_value = 9, .center_freq = 2452}, |
1278 | { .hw_value = 10, .center_freq = 2457}, |
1279 | { .hw_value = 11, .center_freq = 2462}, |
1280 | { .hw_value = 12, .center_freq = 2467}, |
1281 | { .hw_value = 13, .center_freq = 2472}, |
1282 | }; |
1283 | |
1284 | static int wl1251_op_conf_tx(struct ieee80211_hw *hw, |
1285 | struct ieee80211_vif *vif, |
1286 | unsigned int link_id, u16 queue, |
1287 | const struct ieee80211_tx_queue_params *params) |
1288 | { |
1289 | enum wl1251_acx_ps_scheme ps_scheme; |
1290 | struct wl1251 *wl = hw->priv; |
1291 | int ret; |
1292 | |
1293 | mutex_lock(&wl->mutex); |
1294 | |
1295 | wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d" , queue); |
1296 | |
1297 | ret = wl1251_ps_elp_wakeup(wl); |
1298 | if (ret < 0) |
1299 | goto out; |
1300 | |
1301 | /* mac80211 uses units of 32 usec */ |
1302 | ret = wl1251_acx_ac_cfg(wl, ac: wl1251_tx_get_queue(queue), |
1303 | cw_min: params->cw_min, cw_max: params->cw_max, |
1304 | aifs: params->aifs, txop: params->txop * 32); |
1305 | if (ret < 0) |
1306 | goto out_sleep; |
1307 | |
1308 | if (params->uapsd) |
1309 | ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER; |
1310 | else |
1311 | ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY; |
1312 | |
1313 | ret = wl1251_acx_tid_cfg(wl, queue: wl1251_tx_get_queue(queue), |
1314 | type: CHANNEL_TYPE_EDCF, |
1315 | tsid: wl1251_tx_get_queue(queue), ps_scheme, |
1316 | ack_policy: WL1251_ACX_ACK_POLICY_LEGACY); |
1317 | if (ret < 0) |
1318 | goto out_sleep; |
1319 | |
1320 | out_sleep: |
1321 | wl1251_ps_elp_sleep(wl); |
1322 | |
1323 | out: |
1324 | mutex_unlock(lock: &wl->mutex); |
1325 | |
1326 | return ret; |
1327 | } |
1328 | |
1329 | static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx, |
1330 | struct survey_info *survey) |
1331 | { |
1332 | struct wl1251 *wl = hw->priv; |
1333 | struct ieee80211_conf *conf = &hw->conf; |
1334 | |
1335 | if (idx != 0) |
1336 | return -ENOENT; |
1337 | |
1338 | survey->channel = conf->chandef.chan; |
1339 | survey->filled = SURVEY_INFO_NOISE_DBM; |
1340 | survey->noise = wl->noise; |
1341 | |
1342 | return 0; |
1343 | } |
1344 | |
1345 | /* can't be const, mac80211 writes to this */ |
1346 | static struct ieee80211_supported_band wl1251_band_2ghz = { |
1347 | .channels = wl1251_channels, |
1348 | .n_channels = ARRAY_SIZE(wl1251_channels), |
1349 | .bitrates = wl1251_rates, |
1350 | .n_bitrates = ARRAY_SIZE(wl1251_rates), |
1351 | }; |
1352 | |
1353 | static const struct ieee80211_ops wl1251_ops = { |
1354 | .add_chanctx = ieee80211_emulate_add_chanctx, |
1355 | .remove_chanctx = ieee80211_emulate_remove_chanctx, |
1356 | .change_chanctx = ieee80211_emulate_change_chanctx, |
1357 | .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, |
1358 | .start = wl1251_op_start, |
1359 | .stop = wl1251_op_stop, |
1360 | .add_interface = wl1251_op_add_interface, |
1361 | .remove_interface = wl1251_op_remove_interface, |
1362 | .config = wl1251_op_config, |
1363 | .prepare_multicast = wl1251_op_prepare_multicast, |
1364 | .configure_filter = wl1251_op_configure_filter, |
1365 | .tx = wl1251_op_tx, |
1366 | .wake_tx_queue = ieee80211_handle_wake_tx_queue, |
1367 | .set_key = wl1251_op_set_key, |
1368 | .hw_scan = wl1251_op_hw_scan, |
1369 | .bss_info_changed = wl1251_op_bss_info_changed, |
1370 | .set_rts_threshold = wl1251_op_set_rts_threshold, |
1371 | .conf_tx = wl1251_op_conf_tx, |
1372 | .get_survey = wl1251_op_get_survey, |
1373 | }; |
1374 | |
1375 | static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) |
1376 | { |
1377 | unsigned long timeout; |
1378 | |
1379 | wl1251_reg_write32(wl, EE_ADDR, val: offset); |
1380 | wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ); |
1381 | |
1382 | /* EE_CTL_READ clears when data is ready */ |
1383 | timeout = jiffies + msecs_to_jiffies(m: 100); |
1384 | while (1) { |
1385 | if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ)) |
1386 | break; |
1387 | |
1388 | if (time_after(jiffies, timeout)) |
1389 | return -ETIMEDOUT; |
1390 | |
1391 | msleep(msecs: 1); |
1392 | } |
1393 | |
1394 | *data = wl1251_reg_read32(wl, EE_DATA); |
1395 | return 0; |
1396 | } |
1397 | |
1398 | static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset, |
1399 | u8 *data, size_t len) |
1400 | { |
1401 | size_t i; |
1402 | int ret; |
1403 | |
1404 | wl1251_reg_write32(wl, EE_START, val: 0); |
1405 | |
1406 | for (i = 0; i < len; i++) { |
1407 | ret = wl1251_read_eeprom_byte(wl, offset: offset + i, data: &data[i]); |
1408 | if (ret < 0) |
1409 | return ret; |
1410 | } |
1411 | |
1412 | return 0; |
1413 | } |
1414 | |
1415 | static int wl1251_read_eeprom_mac(struct wl1251 *wl) |
1416 | { |
1417 | u8 mac[ETH_ALEN]; |
1418 | int i, ret; |
1419 | |
1420 | wl1251_set_partition(wl, part_start: 0, part_size: 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE); |
1421 | |
1422 | ret = wl1251_read_eeprom(wl, offset: 0x1c, data: mac, len: sizeof(mac)); |
1423 | if (ret < 0) { |
1424 | wl1251_warning("failed to read MAC address from EEPROM" ); |
1425 | return ret; |
1426 | } |
1427 | |
1428 | /* MAC is stored in reverse order */ |
1429 | for (i = 0; i < ETH_ALEN; i++) |
1430 | wl->mac_addr[i] = mac[ETH_ALEN - i - 1]; |
1431 | |
1432 | return 0; |
1433 | } |
1434 | |
1435 | #define NVS_OFF_MAC_LEN 0x19 |
1436 | #define NVS_OFF_MAC_ADDR_LO 0x1a |
1437 | #define NVS_OFF_MAC_ADDR_HI 0x1b |
1438 | #define NVS_OFF_MAC_DATA 0x1c |
1439 | |
1440 | static int wl1251_check_nvs_mac(struct wl1251 *wl) |
1441 | { |
1442 | if (wl->nvs_len < 0x24) |
1443 | return -ENODATA; |
1444 | |
1445 | /* length is 2 and data address is 0x546c (ANDed with 0xfffe) */ |
1446 | if (wl->nvs[NVS_OFF_MAC_LEN] != 2 || |
1447 | wl->nvs[NVS_OFF_MAC_ADDR_LO] != 0x6d || |
1448 | wl->nvs[NVS_OFF_MAC_ADDR_HI] != 0x54) |
1449 | return -EINVAL; |
1450 | |
1451 | return 0; |
1452 | } |
1453 | |
1454 | static int wl1251_read_nvs_mac(struct wl1251 *wl) |
1455 | { |
1456 | u8 mac[ETH_ALEN]; |
1457 | int i, ret; |
1458 | |
1459 | ret = wl1251_check_nvs_mac(wl); |
1460 | if (ret) |
1461 | return ret; |
1462 | |
1463 | /* MAC is stored in reverse order */ |
1464 | for (i = 0; i < ETH_ALEN; i++) |
1465 | mac[i] = wl->nvs[NVS_OFF_MAC_DATA + ETH_ALEN - i - 1]; |
1466 | |
1467 | /* 00:00:20:07:03:09 is in example file wl1251-nvs.bin, so invalid */ |
1468 | if (ether_addr_equal_unaligned(addr1: mac, addr2: "\x00\x00\x20\x07\x03\x09" )) |
1469 | return -EINVAL; |
1470 | |
1471 | memcpy(wl->mac_addr, mac, ETH_ALEN); |
1472 | return 0; |
1473 | } |
1474 | |
1475 | static int wl1251_write_nvs_mac(struct wl1251 *wl) |
1476 | { |
1477 | int i, ret; |
1478 | |
1479 | ret = wl1251_check_nvs_mac(wl); |
1480 | if (ret) |
1481 | return ret; |
1482 | |
1483 | /* MAC is stored in reverse order */ |
1484 | for (i = 0; i < ETH_ALEN; i++) |
1485 | wl->nvs[NVS_OFF_MAC_DATA + i] = wl->mac_addr[ETH_ALEN - i - 1]; |
1486 | |
1487 | return 0; |
1488 | } |
1489 | |
1490 | static int wl1251_register_hw(struct wl1251 *wl) |
1491 | { |
1492 | int ret; |
1493 | |
1494 | if (wl->mac80211_registered) |
1495 | return 0; |
1496 | |
1497 | SET_IEEE80211_PERM_ADDR(hw: wl->hw, addr: wl->mac_addr); |
1498 | |
1499 | ret = ieee80211_register_hw(hw: wl->hw); |
1500 | if (ret < 0) { |
1501 | wl1251_error("unable to register mac80211 hw: %d" , ret); |
1502 | return ret; |
1503 | } |
1504 | |
1505 | wl->mac80211_registered = true; |
1506 | |
1507 | wl1251_notice("loaded" ); |
1508 | |
1509 | return 0; |
1510 | } |
1511 | |
1512 | int wl1251_init_ieee80211(struct wl1251 *wl) |
1513 | { |
1514 | int ret; |
1515 | |
1516 | /* The tx descriptor buffer and the TKIP space */ |
1517 | wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) |
1518 | + WL1251_TKIP_IV_SPACE; |
1519 | |
1520 | /* unit us */ |
1521 | /* FIXME: find a proper value */ |
1522 | |
1523 | ieee80211_hw_set(wl->hw, SIGNAL_DBM); |
1524 | ieee80211_hw_set(wl->hw, SUPPORTS_PS); |
1525 | |
1526 | wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | |
1527 | BIT(NL80211_IFTYPE_ADHOC); |
1528 | wl->hw->wiphy->max_scan_ssids = 1; |
1529 | |
1530 | /* We set max_scan_ie_len to a random value to make wpa_supplicant scans not |
1531 | * fail, as the driver will the ignore the extra passed IEs anyway |
1532 | */ |
1533 | wl->hw->wiphy->max_scan_ie_len = 512; |
1534 | |
1535 | wl->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wl1251_band_2ghz; |
1536 | |
1537 | wl->hw->queues = 4; |
1538 | |
1539 | if (wl->nvs == NULL && !wl->use_eeprom) { |
1540 | ret = wl1251_fetch_nvs(wl); |
1541 | if (ret < 0) |
1542 | goto out; |
1543 | } |
1544 | |
1545 | if (wl->use_eeprom) |
1546 | ret = wl1251_read_eeprom_mac(wl); |
1547 | else |
1548 | ret = wl1251_read_nvs_mac(wl); |
1549 | |
1550 | if (ret == 0 && !is_valid_ether_addr(addr: wl->mac_addr)) |
1551 | ret = -EINVAL; |
1552 | |
1553 | if (ret < 0) { |
1554 | /* |
1555 | * In case our MAC address is not correctly set, |
1556 | * we use a random but Nokia MAC. |
1557 | */ |
1558 | static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; |
1559 | memcpy(wl->mac_addr, nokia_oui, 3); |
1560 | get_random_bytes(buf: wl->mac_addr + 3, len: 3); |
1561 | if (!wl->use_eeprom) |
1562 | wl1251_write_nvs_mac(wl); |
1563 | wl1251_warning("MAC address in eeprom or nvs data is not valid" ); |
1564 | wl1251_warning("Setting random MAC address: %pM" , wl->mac_addr); |
1565 | } |
1566 | |
1567 | ret = wl1251_register_hw(wl); |
1568 | if (ret) |
1569 | goto out; |
1570 | |
1571 | wl1251_debugfs_init(wl); |
1572 | wl1251_notice("initialized" ); |
1573 | |
1574 | ret = 0; |
1575 | |
1576 | out: |
1577 | return ret; |
1578 | } |
1579 | EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); |
1580 | |
1581 | struct ieee80211_hw *wl1251_alloc_hw(void) |
1582 | { |
1583 | struct ieee80211_hw *hw; |
1584 | struct wl1251 *wl; |
1585 | int i; |
1586 | |
1587 | hw = ieee80211_alloc_hw(priv_data_len: sizeof(*wl), ops: &wl1251_ops); |
1588 | if (!hw) { |
1589 | wl1251_error("could not alloc ieee80211_hw" ); |
1590 | return ERR_PTR(error: -ENOMEM); |
1591 | } |
1592 | |
1593 | wl = hw->priv; |
1594 | memset(wl, 0, sizeof(*wl)); |
1595 | |
1596 | wl->hw = hw; |
1597 | |
1598 | wl->data_in_count = 0; |
1599 | |
1600 | skb_queue_head_init(list: &wl->tx_queue); |
1601 | |
1602 | INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work); |
1603 | wl->channel = WL1251_DEFAULT_CHANNEL; |
1604 | wl->monitor_present = false; |
1605 | wl->joined = false; |
1606 | wl->scanning = false; |
1607 | wl->bss_type = MAX_BSS_TYPE; |
1608 | wl->default_key = 0; |
1609 | wl->listen_int = 1; |
1610 | wl->rx_counter = 0; |
1611 | wl->rx_handled = 0; |
1612 | wl->rx_current_buffer = 0; |
1613 | wl->rx_last_id = 0; |
1614 | wl->rx_config = WL1251_DEFAULT_RX_CONFIG; |
1615 | wl->rx_filter = WL1251_DEFAULT_RX_FILTER; |
1616 | wl->elp = false; |
1617 | wl->station_mode = STATION_ACTIVE_MODE; |
1618 | wl->psm_requested = false; |
1619 | wl->psm_entry_retry = 0; |
1620 | wl->tx_queue_stopped = false; |
1621 | wl->power_level = WL1251_DEFAULT_POWER_LEVEL; |
1622 | wl->rssi_thold = 0; |
1623 | wl->beacon_int = WL1251_DEFAULT_BEACON_INT; |
1624 | wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; |
1625 | wl->vif = NULL; |
1626 | |
1627 | for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) |
1628 | wl->tx_frames[i] = NULL; |
1629 | |
1630 | wl->next_tx_complete = 0; |
1631 | |
1632 | INIT_WORK(&wl->irq_work, wl1251_irq_work); |
1633 | INIT_WORK(&wl->tx_work, wl1251_tx_work); |
1634 | |
1635 | wl->state = WL1251_STATE_OFF; |
1636 | mutex_init(&wl->mutex); |
1637 | spin_lock_init(&wl->wl_lock); |
1638 | |
1639 | wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE; |
1640 | wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE; |
1641 | |
1642 | wl->rx_descriptor = kmalloc(size: sizeof(*wl->rx_descriptor), GFP_KERNEL); |
1643 | if (!wl->rx_descriptor) { |
1644 | wl1251_error("could not allocate memory for rx descriptor" ); |
1645 | ieee80211_free_hw(hw); |
1646 | return ERR_PTR(error: -ENOMEM); |
1647 | } |
1648 | |
1649 | return hw; |
1650 | } |
1651 | EXPORT_SYMBOL_GPL(wl1251_alloc_hw); |
1652 | |
1653 | int wl1251_free_hw(struct wl1251 *wl) |
1654 | { |
1655 | ieee80211_unregister_hw(hw: wl->hw); |
1656 | |
1657 | wl1251_debugfs_exit(wl); |
1658 | |
1659 | kfree(objp: wl->target_mem_map); |
1660 | kfree(objp: wl->data_path); |
1661 | vfree(addr: wl->fw); |
1662 | wl->fw = NULL; |
1663 | kfree(objp: wl->nvs); |
1664 | wl->nvs = NULL; |
1665 | |
1666 | kfree(objp: wl->rx_descriptor); |
1667 | wl->rx_descriptor = NULL; |
1668 | |
1669 | ieee80211_free_hw(hw: wl->hw); |
1670 | |
1671 | return 0; |
1672 | } |
1673 | EXPORT_SYMBOL_GPL(wl1251_free_hw); |
1674 | |
1675 | MODULE_DESCRIPTION("TI wl1251 Wireless LAN Driver Core" ); |
1676 | MODULE_LICENSE("GPL" ); |
1677 | MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>" ); |
1678 | MODULE_FIRMWARE(WL1251_FW_NAME); |
1679 | MODULE_FIRMWARE(WL1251_NVS_NAME); |
1680 | |