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22#include <linux/module.h>
23#include <linux/interrupt.h>
24#include <linux/firmware.h>
25#include <linux/delay.h>
26#include <linux/irq.h>
27#include <linux/crc32.h>
28#include <linux/etherdevice.h>
29#include <linux/vmalloc.h>
30#include <linux/slab.h>
31
32#include "wl1251.h"
33#include "wl12xx_80211.h"
34#include "reg.h"
35#include "io.h"
36#include "cmd.h"
37#include "event.h"
38#include "tx.h"
39#include "rx.h"
40#include "ps.h"
41#include "init.h"
42#include "debugfs.h"
43#include "boot.h"
44
45void wl1251_enable_interrupts(struct wl1251 *wl)
46{
47 wl->if_ops->enable_irq(wl);
48}
49
50void wl1251_disable_interrupts(struct wl1251 *wl)
51{
52 wl->if_ops->disable_irq(wl);
53}
54
55static int wl1251_power_off(struct wl1251 *wl)
56{
57 return wl->if_ops->power(wl, false);
58}
59
60static int wl1251_power_on(struct wl1251 *wl)
61{
62 return wl->if_ops->power(wl, true);
63}
64
65static int wl1251_fetch_firmware(struct wl1251 *wl)
66{
67 const struct firmware *fw;
68 struct device *dev = wiphy_dev(wl->hw->wiphy);
69 int ret;
70
71 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
72
73 if (ret < 0) {
74 wl1251_error("could not get firmware: %d", ret);
75 return ret;
76 }
77
78 if (fw->size % 4) {
79 wl1251_error("firmware size is not multiple of 32 bits: %zu",
80 fw->size);
81 ret = -EILSEQ;
82 goto out;
83 }
84
85 wl->fw_len = fw->size;
86 wl->fw = vmalloc(wl->fw_len);
87
88 if (!wl->fw) {
89 wl1251_error("could not allocate memory for the firmware");
90 ret = -ENOMEM;
91 goto out;
92 }
93
94 memcpy(wl->fw, fw->data, wl->fw_len);
95
96 ret = 0;
97
98out:
99 release_firmware(fw);
100
101 return ret;
102}
103
104static int wl1251_fetch_nvs(struct wl1251 *wl)
105{
106 const struct firmware *fw;
107 struct device *dev = wiphy_dev(wl->hw->wiphy);
108 int ret;
109
110 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
111
112 if (ret < 0) {
113 wl1251_error("could not get nvs file: %d", ret);
114 return ret;
115 }
116
117 if (fw->size % 4) {
118 wl1251_error("nvs size is not multiple of 32 bits: %zu",
119 fw->size);
120 ret = -EILSEQ;
121 goto out;
122 }
123
124 wl->nvs_len = fw->size;
125 wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
126
127 if (!wl->nvs) {
128 wl1251_error("could not allocate memory for the nvs file");
129 ret = -ENOMEM;
130 goto out;
131 }
132
133 ret = 0;
134
135out:
136 release_firmware(fw);
137
138 return ret;
139}
140
141static void wl1251_fw_wakeup(struct wl1251 *wl)
142{
143 u32 elp_reg;
144
145 elp_reg = ELPCTRL_WAKE_UP;
146 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
147 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
148
149 if (!(elp_reg & ELPCTRL_WLAN_READY))
150 wl1251_warning("WLAN not ready");
151}
152
153static int wl1251_chip_wakeup(struct wl1251 *wl)
154{
155 int ret;
156
157 ret = wl1251_power_on(wl);
158 if (ret < 0)
159 return ret;
160
161 msleep(WL1251_POWER_ON_SLEEP);
162 wl->if_ops->reset(wl);
163
164
165
166 wl1251_set_partition(wl,
167 0x00000000,
168 0x00000000,
169 REGISTERS_BASE,
170 REGISTERS_DOWN_SIZE);
171
172
173 wl1251_fw_wakeup(wl);
174
175
176
177
178 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
179
180
181
182 switch (wl->chip_id) {
183 case CHIP_ID_1251_PG12:
184 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
185 wl->chip_id);
186 break;
187 case CHIP_ID_1251_PG11:
188 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
189 wl->chip_id);
190 break;
191 case CHIP_ID_1251_PG10:
192 default:
193 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
194 ret = -ENODEV;
195 goto out;
196 }
197
198 if (wl->fw == NULL) {
199 ret = wl1251_fetch_firmware(wl);
200 if (ret < 0)
201 goto out;
202 }
203
204 if (wl->nvs == NULL && !wl->use_eeprom) {
205
206 ret = wl1251_fetch_nvs(wl);
207 if (ret < 0)
208 goto out;
209 }
210
211out:
212 return ret;
213}
214
215#define WL1251_IRQ_LOOP_COUNT 10
216static void wl1251_irq_work(struct work_struct *work)
217{
218 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
219 struct wl1251 *wl =
220 container_of(work, struct wl1251, irq_work);
221 int ret;
222
223 mutex_lock(&wl->mutex);
224
225 wl1251_debug(DEBUG_IRQ, "IRQ work");
226
227 if (wl->state == WL1251_STATE_OFF)
228 goto out;
229
230 ret = wl1251_ps_elp_wakeup(wl);
231 if (ret < 0)
232 goto out;
233
234 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
235
236 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
237 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
238
239 do {
240 if (wl->data_path) {
241 wl->rx_counter = wl1251_mem_read32(
242 wl, wl->data_path->rx_control_addr);
243
244
245 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
246 case 0:
247 wl1251_debug(DEBUG_IRQ,
248 "RX: FW and host in sync");
249 intr &= ~WL1251_ACX_INTR_RX0_DATA;
250 intr &= ~WL1251_ACX_INTR_RX1_DATA;
251 break;
252 case 1:
253 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
254 intr |= WL1251_ACX_INTR_RX0_DATA;
255 intr &= ~WL1251_ACX_INTR_RX1_DATA;
256 break;
257 case 2:
258 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
259 intr |= WL1251_ACX_INTR_RX0_DATA;
260 intr |= WL1251_ACX_INTR_RX1_DATA;
261 break;
262 default:
263 wl1251_warning(
264 "RX: FW and host out of sync: %d",
265 wl->rx_counter - wl->rx_handled);
266 break;
267 }
268
269 wl->rx_handled = wl->rx_counter;
270
271 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
272 wl->rx_counter);
273 }
274
275 intr &= wl->intr_mask;
276
277 if (intr == 0) {
278 wl1251_debug(DEBUG_IRQ, "INTR is 0");
279 goto out_sleep;
280 }
281
282 if (intr & WL1251_ACX_INTR_RX0_DATA) {
283 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
284 wl1251_rx(wl);
285 }
286
287 if (intr & WL1251_ACX_INTR_RX1_DATA) {
288 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
289 wl1251_rx(wl);
290 }
291
292 if (intr & WL1251_ACX_INTR_TX_RESULT) {
293 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
294 wl1251_tx_complete(wl);
295 }
296
297 if (intr & WL1251_ACX_INTR_EVENT_A) {
298 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
299 wl1251_event_handle(wl, 0);
300 }
301
302 if (intr & WL1251_ACX_INTR_EVENT_B) {
303 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
304 wl1251_event_handle(wl, 1);
305 }
306
307 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
308 wl1251_debug(DEBUG_IRQ,
309 "WL1251_ACX_INTR_INIT_COMPLETE");
310
311 if (--ctr == 0)
312 break;
313
314 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
315 } while (intr);
316
317out_sleep:
318 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
319 wl1251_ps_elp_sleep(wl);
320
321out:
322 mutex_unlock(&wl->mutex);
323}
324
325static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
326 u16 beacon_interval, u8 dtim_period)
327{
328 int ret;
329
330 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
331 DEFAULT_HW_GEN_MODULATION_TYPE,
332 wl->tx_mgmt_frm_rate,
333 wl->tx_mgmt_frm_mod);
334 if (ret < 0)
335 goto out;
336
337
338 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
339 dtim_period);
340 if (ret < 0)
341 goto out;
342
343 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
344 if (ret < 0)
345 wl1251_warning("join timeout");
346
347out:
348 return ret;
349}
350
351static void wl1251_filter_work(struct work_struct *work)
352{
353 struct wl1251 *wl =
354 container_of(work, struct wl1251, filter_work);
355 int ret;
356
357 mutex_lock(&wl->mutex);
358
359 if (wl->state == WL1251_STATE_OFF)
360 goto out;
361
362 ret = wl1251_ps_elp_wakeup(wl);
363 if (ret < 0)
364 goto out;
365
366 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
367 wl->dtim_period);
368 if (ret < 0)
369 goto out_sleep;
370
371out_sleep:
372 wl1251_ps_elp_sleep(wl);
373
374out:
375 mutex_unlock(&wl->mutex);
376}
377
378static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
379{
380 struct wl1251 *wl = hw->priv;
381 unsigned long flags;
382
383 skb_queue_tail(&wl->tx_queue, skb);
384
385
386
387
388
389
390 ieee80211_queue_work(wl->hw, &wl->tx_work);
391
392
393
394
395
396 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
397 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
398
399 spin_lock_irqsave(&wl->wl_lock, flags);
400 ieee80211_stop_queues(wl->hw);
401 wl->tx_queue_stopped = true;
402 spin_unlock_irqrestore(&wl->wl_lock, flags);
403 }
404
405 return NETDEV_TX_OK;
406}
407
408static int wl1251_op_start(struct ieee80211_hw *hw)
409{
410 struct wl1251 *wl = hw->priv;
411 struct wiphy *wiphy = hw->wiphy;
412 int ret = 0;
413
414 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
415
416 mutex_lock(&wl->mutex);
417
418 if (wl->state != WL1251_STATE_OFF) {
419 wl1251_error("cannot start because not in off state: %d",
420 wl->state);
421 ret = -EBUSY;
422 goto out;
423 }
424
425 ret = wl1251_chip_wakeup(wl);
426 if (ret < 0)
427 goto out;
428
429 ret = wl1251_boot(wl);
430 if (ret < 0)
431 goto out;
432
433 ret = wl1251_hw_init(wl);
434 if (ret < 0)
435 goto out;
436
437 ret = wl1251_acx_station_id(wl);
438 if (ret < 0)
439 goto out;
440
441 wl->state = WL1251_STATE_ON;
442
443 wl1251_info("firmware booted (%s)", wl->fw_ver);
444
445
446 wiphy->hw_version = wl->chip_id;
447 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
448
449out:
450 if (ret < 0)
451 wl1251_power_off(wl);
452
453 mutex_unlock(&wl->mutex);
454
455 return ret;
456}
457
458static void wl1251_op_stop(struct ieee80211_hw *hw)
459{
460 struct wl1251 *wl = hw->priv;
461
462 wl1251_info("down");
463
464 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
465
466 mutex_lock(&wl->mutex);
467
468 WARN_ON(wl->state != WL1251_STATE_ON);
469
470 if (wl->scanning) {
471 ieee80211_scan_completed(wl->hw, true);
472 wl->scanning = false;
473 }
474
475 wl->state = WL1251_STATE_OFF;
476
477 wl1251_disable_interrupts(wl);
478
479 mutex_unlock(&wl->mutex);
480
481 cancel_work_sync(&wl->irq_work);
482 cancel_work_sync(&wl->tx_work);
483 cancel_work_sync(&wl->filter_work);
484
485 mutex_lock(&wl->mutex);
486
487
488 wl1251_tx_flush(wl);
489 wl1251_power_off(wl);
490
491 memset(wl->bssid, 0, ETH_ALEN);
492 wl->listen_int = 1;
493 wl->bss_type = MAX_BSS_TYPE;
494
495 wl->data_in_count = 0;
496 wl->rx_counter = 0;
497 wl->rx_handled = 0;
498 wl->rx_current_buffer = 0;
499 wl->rx_last_id = 0;
500 wl->next_tx_complete = 0;
501 wl->elp = false;
502 wl->psm = 0;
503 wl->tx_queue_stopped = false;
504 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
505 wl->channel = WL1251_DEFAULT_CHANNEL;
506
507 wl1251_debugfs_reset(wl);
508
509 mutex_unlock(&wl->mutex);
510}
511
512static int wl1251_op_add_interface(struct ieee80211_hw *hw,
513 struct ieee80211_vif *vif)
514{
515 struct wl1251 *wl = hw->priv;
516 int ret = 0;
517
518 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
519 vif->type, vif->addr);
520
521 mutex_lock(&wl->mutex);
522 if (wl->vif) {
523 ret = -EBUSY;
524 goto out;
525 }
526
527 wl->vif = vif;
528
529 switch (vif->type) {
530 case NL80211_IFTYPE_STATION:
531 wl->bss_type = BSS_TYPE_STA_BSS;
532 break;
533 case NL80211_IFTYPE_ADHOC:
534 wl->bss_type = BSS_TYPE_IBSS;
535 break;
536 default:
537 ret = -EOPNOTSUPP;
538 goto out;
539 }
540
541 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
542 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
543 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
544 ret = wl1251_acx_station_id(wl);
545 if (ret < 0)
546 goto out;
547 }
548
549out:
550 mutex_unlock(&wl->mutex);
551 return ret;
552}
553
554static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
555 struct ieee80211_vif *vif)
556{
557 struct wl1251 *wl = hw->priv;
558
559 mutex_lock(&wl->mutex);
560 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
561 wl->vif = NULL;
562 mutex_unlock(&wl->mutex);
563}
564
565static int wl1251_build_qos_null_data(struct wl1251 *wl)
566{
567 struct ieee80211_qos_hdr template;
568
569 memset(&template, 0, sizeof(template));
570
571 memcpy(template.addr1, wl->bssid, ETH_ALEN);
572 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
573 memcpy(template.addr3, wl->bssid, ETH_ALEN);
574
575 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
576 IEEE80211_STYPE_QOS_NULLFUNC |
577 IEEE80211_FCTL_TODS);
578
579
580 template.qos_ctrl = cpu_to_le16(0);
581
582 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
583 sizeof(template));
584}
585
586static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
587{
588 struct wl1251 *wl = hw->priv;
589 struct ieee80211_conf *conf = &hw->conf;
590 int channel, ret = 0;
591
592 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
593
594 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
595 channel,
596 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
597 conf->power_level);
598
599 mutex_lock(&wl->mutex);
600
601 ret = wl1251_ps_elp_wakeup(wl);
602 if (ret < 0)
603 goto out;
604
605 if (channel != wl->channel) {
606 wl->channel = channel;
607
608 ret = wl1251_join(wl, wl->bss_type, wl->channel,
609 wl->beacon_int, wl->dtim_period);
610 if (ret < 0)
611 goto out_sleep;
612 }
613
614 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
615 wl1251_debug(DEBUG_PSM, "psm enabled");
616
617 wl->psm_requested = true;
618
619 wl->dtim_period = conf->ps_dtim_period;
620
621 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
622 wl->dtim_period);
623
624
625
626
627 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
628 if (ret < 0)
629 goto out_sleep;
630 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
631 wl->psm_requested) {
632 wl1251_debug(DEBUG_PSM, "psm disabled");
633
634 wl->psm_requested = false;
635
636 if (wl->psm) {
637 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
638 if (ret < 0)
639 goto out_sleep;
640 }
641 }
642
643 if (conf->power_level != wl->power_level) {
644 ret = wl1251_acx_tx_power(wl, conf->power_level);
645 if (ret < 0)
646 goto out_sleep;
647
648 wl->power_level = conf->power_level;
649 }
650
651out_sleep:
652 wl1251_ps_elp_sleep(wl);
653
654out:
655 mutex_unlock(&wl->mutex);
656
657 return ret;
658}
659
660#define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
661 FIF_ALLMULTI | \
662 FIF_FCSFAIL | \
663 FIF_BCN_PRBRESP_PROMISC | \
664 FIF_CONTROL | \
665 FIF_OTHER_BSS)
666
667static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
668 unsigned int changed,
669 unsigned int *total,u64 multicast)
670{
671 struct wl1251 *wl = hw->priv;
672
673 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
674
675 *total &= WL1251_SUPPORTED_FILTERS;
676 changed &= WL1251_SUPPORTED_FILTERS;
677
678 if (changed == 0)
679
680 return;
681
682
683
684 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
685 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
686
687 if (*total & FIF_PROMISC_IN_BSS) {
688 wl->rx_config |= CFG_BSSID_FILTER_EN;
689 wl->rx_config |= CFG_RX_ALL_GOOD;
690 }
691 if (*total & FIF_ALLMULTI)
692
693
694
695
696 wl->rx_config &= ~CFG_MC_FILTER_EN;
697 if (*total & FIF_FCSFAIL)
698 wl->rx_filter |= CFG_RX_FCS_ERROR;
699 if (*total & FIF_BCN_PRBRESP_PROMISC) {
700 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
701 wl->rx_config &= ~CFG_SSID_FILTER_EN;
702 }
703 if (*total & FIF_CONTROL)
704 wl->rx_filter |= CFG_RX_CTL_EN;
705 if (*total & FIF_OTHER_BSS)
706 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
707
708
709
710
711
712
713
714}
715
716
717static int wl1251_set_key_type(struct wl1251 *wl,
718 struct wl1251_cmd_set_keys *key,
719 enum set_key_cmd cmd,
720 struct ieee80211_key_conf *mac80211_key,
721 const u8 *addr)
722{
723 switch (mac80211_key->cipher) {
724 case WLAN_CIPHER_SUITE_WEP40:
725 case WLAN_CIPHER_SUITE_WEP104:
726 if (is_broadcast_ether_addr(addr))
727 key->key_type = KEY_WEP_DEFAULT;
728 else
729 key->key_type = KEY_WEP_ADDR;
730
731 mac80211_key->hw_key_idx = mac80211_key->keyidx;
732 break;
733 case WLAN_CIPHER_SUITE_TKIP:
734 if (is_broadcast_ether_addr(addr))
735 key->key_type = KEY_TKIP_MIC_GROUP;
736 else
737 key->key_type = KEY_TKIP_MIC_PAIRWISE;
738
739 mac80211_key->hw_key_idx = mac80211_key->keyidx;
740 break;
741 case WLAN_CIPHER_SUITE_CCMP:
742 if (is_broadcast_ether_addr(addr))
743 key->key_type = KEY_AES_GROUP;
744 else
745 key->key_type = KEY_AES_PAIRWISE;
746 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
747 break;
748 default:
749 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
750 return -EOPNOTSUPP;
751 }
752
753 return 0;
754}
755
756static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
757 struct ieee80211_vif *vif,
758 struct ieee80211_sta *sta,
759 struct ieee80211_key_conf *key)
760{
761 struct wl1251 *wl = hw->priv;
762 struct wl1251_cmd_set_keys *wl_cmd;
763 const u8 *addr;
764 int ret;
765
766 static const u8 bcast_addr[ETH_ALEN] =
767 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
768
769 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
770
771 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
772 if (!wl_cmd) {
773 ret = -ENOMEM;
774 goto out;
775 }
776
777 addr = sta ? sta->addr : bcast_addr;
778
779 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
780 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
781 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
782 key->cipher, key->keyidx, key->keylen, key->flags);
783 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
784
785 if (is_zero_ether_addr(addr)) {
786
787 ret = -EOPNOTSUPP;
788 goto out;
789 }
790
791 mutex_lock(&wl->mutex);
792
793 ret = wl1251_ps_elp_wakeup(wl);
794 if (ret < 0)
795 goto out_unlock;
796
797 switch (cmd) {
798 case SET_KEY:
799 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
800 break;
801 case DISABLE_KEY:
802 wl_cmd->key_action = KEY_REMOVE;
803 break;
804 default:
805 wl1251_error("Unsupported key cmd 0x%x", cmd);
806 break;
807 }
808
809 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
810 if (ret < 0) {
811 wl1251_error("Set KEY type failed");
812 goto out_sleep;
813 }
814
815 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
816 memcpy(wl_cmd->addr, addr, ETH_ALEN);
817
818 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
819 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
820
821
822
823
824
825
826 memcpy(wl_cmd->key, key->key, 16);
827 memcpy(wl_cmd->key + 16, key->key + 24, 8);
828 memcpy(wl_cmd->key + 24, key->key + 16, 8);
829
830 } else {
831 memcpy(wl_cmd->key, key->key, key->keylen);
832 }
833 wl_cmd->key_size = key->keylen;
834
835 wl_cmd->id = key->keyidx;
836 wl_cmd->ssid_profile = 0;
837
838 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
839
840 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
841 if (ret < 0) {
842 wl1251_warning("could not set keys");
843 goto out_sleep;
844 }
845
846out_sleep:
847 wl1251_ps_elp_sleep(wl);
848
849out_unlock:
850 mutex_unlock(&wl->mutex);
851
852out:
853 kfree(wl_cmd);
854
855 return ret;
856}
857
858static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
859 struct ieee80211_vif *vif,
860 struct cfg80211_scan_request *req)
861{
862 struct wl1251 *wl = hw->priv;
863 struct sk_buff *skb;
864 size_t ssid_len = 0;
865 u8 *ssid = NULL;
866 int ret;
867
868 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
869
870 if (req->n_ssids) {
871 ssid = req->ssids[0].ssid;
872 ssid_len = req->ssids[0].ssid_len;
873 }
874
875 mutex_lock(&wl->mutex);
876
877 if (wl->scanning) {
878 wl1251_debug(DEBUG_SCAN, "scan already in progress");
879 ret = -EINVAL;
880 goto out;
881 }
882
883 ret = wl1251_ps_elp_wakeup(wl);
884 if (ret < 0)
885 goto out;
886
887 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
888 req->ie, req->ie_len);
889 if (!skb) {
890 ret = -ENOMEM;
891 goto out;
892 }
893
894 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
895 skb->len);
896 dev_kfree_skb(skb);
897 if (ret < 0)
898 goto out_sleep;
899
900 ret = wl1251_cmd_trigger_scan_to(wl, 0);
901 if (ret < 0)
902 goto out_sleep;
903
904 wl->scanning = true;
905
906 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
907 req->n_channels, WL1251_SCAN_NUM_PROBES);
908 if (ret < 0) {
909 wl->scanning = false;
910 goto out_sleep;
911 }
912
913out_sleep:
914 wl1251_ps_elp_sleep(wl);
915
916out:
917 mutex_unlock(&wl->mutex);
918
919 return ret;
920}
921
922static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
923{
924 struct wl1251 *wl = hw->priv;
925 int ret;
926
927 mutex_lock(&wl->mutex);
928
929 ret = wl1251_ps_elp_wakeup(wl);
930 if (ret < 0)
931 goto out;
932
933 ret = wl1251_acx_rts_threshold(wl, (u16) value);
934 if (ret < 0)
935 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
936
937 wl1251_ps_elp_sleep(wl);
938
939out:
940 mutex_unlock(&wl->mutex);
941
942 return ret;
943}
944
945static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
946 struct ieee80211_vif *vif,
947 struct ieee80211_bss_conf *bss_conf,
948 u32 changed)
949{
950 struct wl1251 *wl = hw->priv;
951 struct sk_buff *beacon, *skb;
952 int ret;
953
954 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
955
956 mutex_lock(&wl->mutex);
957
958 ret = wl1251_ps_elp_wakeup(wl);
959 if (ret < 0)
960 goto out;
961
962 if (changed & BSS_CHANGED_BSSID) {
963 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
964
965 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
966 if (!skb)
967 goto out_sleep;
968
969 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
970 skb->data, skb->len);
971 dev_kfree_skb(skb);
972 if (ret < 0)
973 goto out_sleep;
974
975 ret = wl1251_build_qos_null_data(wl);
976 if (ret < 0)
977 goto out;
978
979 if (wl->bss_type != BSS_TYPE_IBSS) {
980 ret = wl1251_join(wl, wl->bss_type, wl->channel,
981 wl->beacon_int, wl->dtim_period);
982 if (ret < 0)
983 goto out_sleep;
984 }
985 }
986
987 if (changed & BSS_CHANGED_ASSOC) {
988 if (bss_conf->assoc) {
989 wl->beacon_int = bss_conf->beacon_int;
990
991 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
992 if (!skb)
993 goto out_sleep;
994
995 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
996 skb->data,
997 skb->len);
998 dev_kfree_skb(skb);
999 if (ret < 0)
1000 goto out_sleep;
1001
1002 ret = wl1251_acx_aid(wl, bss_conf->aid);
1003 if (ret < 0)
1004 goto out_sleep;
1005 } else {
1006
1007 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1008 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1009 }
1010 }
1011 if (changed & BSS_CHANGED_ERP_SLOT) {
1012 if (bss_conf->use_short_slot)
1013 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1014 else
1015 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1016 if (ret < 0) {
1017 wl1251_warning("Set slot time failed %d", ret);
1018 goto out_sleep;
1019 }
1020 }
1021
1022 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1023 if (bss_conf->use_short_preamble)
1024 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1025 else
1026 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1027 }
1028
1029 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1030 if (bss_conf->use_cts_prot)
1031 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1032 else
1033 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1034 if (ret < 0) {
1035 wl1251_warning("Set ctsprotect failed %d", ret);
1036 goto out_sleep;
1037 }
1038 }
1039
1040 if (changed & BSS_CHANGED_BEACON) {
1041 beacon = ieee80211_beacon_get(hw, vif);
1042 if (!beacon)
1043 goto out_sleep;
1044
1045 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1046 beacon->len);
1047
1048 if (ret < 0) {
1049 dev_kfree_skb(beacon);
1050 goto out_sleep;
1051 }
1052
1053 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1054 beacon->len);
1055
1056 dev_kfree_skb(beacon);
1057
1058 if (ret < 0)
1059 goto out_sleep;
1060
1061 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1062 wl->channel, wl->dtim_period);
1063
1064 if (ret < 0)
1065 goto out_sleep;
1066 }
1067
1068out_sleep:
1069 wl1251_ps_elp_sleep(wl);
1070
1071out:
1072 mutex_unlock(&wl->mutex);
1073}
1074
1075
1076
1077static struct ieee80211_rate wl1251_rates[] = {
1078 { .bitrate = 10,
1079 .hw_value = 0x1,
1080 .hw_value_short = 0x1, },
1081 { .bitrate = 20,
1082 .hw_value = 0x2,
1083 .hw_value_short = 0x2,
1084 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1085 { .bitrate = 55,
1086 .hw_value = 0x4,
1087 .hw_value_short = 0x4,
1088 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1089 { .bitrate = 110,
1090 .hw_value = 0x20,
1091 .hw_value_short = 0x20,
1092 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1093 { .bitrate = 60,
1094 .hw_value = 0x8,
1095 .hw_value_short = 0x8, },
1096 { .bitrate = 90,
1097 .hw_value = 0x10,
1098 .hw_value_short = 0x10, },
1099 { .bitrate = 120,
1100 .hw_value = 0x40,
1101 .hw_value_short = 0x40, },
1102 { .bitrate = 180,
1103 .hw_value = 0x80,
1104 .hw_value_short = 0x80, },
1105 { .bitrate = 240,
1106 .hw_value = 0x200,
1107 .hw_value_short = 0x200, },
1108 { .bitrate = 360,
1109 .hw_value = 0x400,
1110 .hw_value_short = 0x400, },
1111 { .bitrate = 480,
1112 .hw_value = 0x800,
1113 .hw_value_short = 0x800, },
1114 { .bitrate = 540,
1115 .hw_value = 0x1000,
1116 .hw_value_short = 0x1000, },
1117};
1118
1119
1120static struct ieee80211_channel wl1251_channels[] = {
1121 { .hw_value = 1, .center_freq = 2412},
1122 { .hw_value = 2, .center_freq = 2417},
1123 { .hw_value = 3, .center_freq = 2422},
1124 { .hw_value = 4, .center_freq = 2427},
1125 { .hw_value = 5, .center_freq = 2432},
1126 { .hw_value = 6, .center_freq = 2437},
1127 { .hw_value = 7, .center_freq = 2442},
1128 { .hw_value = 8, .center_freq = 2447},
1129 { .hw_value = 9, .center_freq = 2452},
1130 { .hw_value = 10, .center_freq = 2457},
1131 { .hw_value = 11, .center_freq = 2462},
1132 { .hw_value = 12, .center_freq = 2467},
1133 { .hw_value = 13, .center_freq = 2472},
1134};
1135
1136static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1137 const struct ieee80211_tx_queue_params *params)
1138{
1139 enum wl1251_acx_ps_scheme ps_scheme;
1140 struct wl1251 *wl = hw->priv;
1141 int ret;
1142
1143 mutex_lock(&wl->mutex);
1144
1145 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1146
1147 ret = wl1251_ps_elp_wakeup(wl);
1148 if (ret < 0)
1149 goto out;
1150
1151
1152 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1153 params->cw_min, params->cw_max,
1154 params->aifs, params->txop * 32);
1155 if (ret < 0)
1156 goto out_sleep;
1157
1158 if (params->uapsd)
1159 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1160 else
1161 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1162
1163 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1164 CHANNEL_TYPE_EDCF,
1165 wl1251_tx_get_queue(queue), ps_scheme,
1166 WL1251_ACX_ACK_POLICY_LEGACY);
1167 if (ret < 0)
1168 goto out_sleep;
1169
1170out_sleep:
1171 wl1251_ps_elp_sleep(wl);
1172
1173out:
1174 mutex_unlock(&wl->mutex);
1175
1176 return ret;
1177}
1178
1179static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1180 struct survey_info *survey)
1181{
1182 struct wl1251 *wl = hw->priv;
1183 struct ieee80211_conf *conf = &hw->conf;
1184
1185 if (idx != 0)
1186 return -ENOENT;
1187
1188 survey->channel = conf->channel;
1189 survey->filled = SURVEY_INFO_NOISE_DBM;
1190 survey->noise = wl->noise;
1191
1192 return 0;
1193}
1194
1195
1196static struct ieee80211_supported_band wl1251_band_2ghz = {
1197 .channels = wl1251_channels,
1198 .n_channels = ARRAY_SIZE(wl1251_channels),
1199 .bitrates = wl1251_rates,
1200 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1201};
1202
1203static const struct ieee80211_ops wl1251_ops = {
1204 .start = wl1251_op_start,
1205 .stop = wl1251_op_stop,
1206 .add_interface = wl1251_op_add_interface,
1207 .remove_interface = wl1251_op_remove_interface,
1208 .config = wl1251_op_config,
1209 .configure_filter = wl1251_op_configure_filter,
1210 .tx = wl1251_op_tx,
1211 .set_key = wl1251_op_set_key,
1212 .hw_scan = wl1251_op_hw_scan,
1213 .bss_info_changed = wl1251_op_bss_info_changed,
1214 .set_rts_threshold = wl1251_op_set_rts_threshold,
1215 .conf_tx = wl1251_op_conf_tx,
1216 .get_survey = wl1251_op_get_survey,
1217};
1218
1219static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1220{
1221 unsigned long timeout;
1222
1223 wl1251_reg_write32(wl, EE_ADDR, offset);
1224 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1225
1226
1227 timeout = jiffies + msecs_to_jiffies(100);
1228 while (1) {
1229 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1230 break;
1231
1232 if (time_after(jiffies, timeout))
1233 return -ETIMEDOUT;
1234
1235 msleep(1);
1236 }
1237
1238 *data = wl1251_reg_read32(wl, EE_DATA);
1239 return 0;
1240}
1241
1242static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1243 u8 *data, size_t len)
1244{
1245 size_t i;
1246 int ret;
1247
1248 wl1251_reg_write32(wl, EE_START, 0);
1249
1250 for (i = 0; i < len; i++) {
1251 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1252 if (ret < 0)
1253 return ret;
1254 }
1255
1256 return 0;
1257}
1258
1259static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1260{
1261 u8 mac[ETH_ALEN];
1262 int i, ret;
1263
1264 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1265
1266 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1267 if (ret < 0) {
1268 wl1251_warning("failed to read MAC address from EEPROM");
1269 return ret;
1270 }
1271
1272
1273 for (i = 0; i < ETH_ALEN; i++)
1274 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1275
1276 return 0;
1277}
1278
1279static int wl1251_register_hw(struct wl1251 *wl)
1280{
1281 int ret;
1282
1283 if (wl->mac80211_registered)
1284 return 0;
1285
1286 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1287
1288 ret = ieee80211_register_hw(wl->hw);
1289 if (ret < 0) {
1290 wl1251_error("unable to register mac80211 hw: %d", ret);
1291 return ret;
1292 }
1293
1294 wl->mac80211_registered = true;
1295
1296 wl1251_notice("loaded");
1297
1298 return 0;
1299}
1300
1301int wl1251_init_ieee80211(struct wl1251 *wl)
1302{
1303 int ret;
1304
1305
1306 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1307 + WL1251_TKIP_IV_SPACE;
1308
1309
1310
1311 wl->hw->channel_change_time = 10000;
1312
1313 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1314 IEEE80211_HW_SUPPORTS_PS |
1315 IEEE80211_HW_BEACON_FILTER |
1316 IEEE80211_HW_SUPPORTS_UAPSD;
1317
1318 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1319 wl->hw->wiphy->max_scan_ssids = 1;
1320 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1321
1322 wl->hw->queues = 4;
1323
1324 if (wl->use_eeprom)
1325 wl1251_read_eeprom_mac(wl);
1326
1327 ret = wl1251_register_hw(wl);
1328 if (ret)
1329 goto out;
1330
1331 wl1251_debugfs_init(wl);
1332 wl1251_notice("initialized");
1333
1334 ret = 0;
1335
1336out:
1337 return ret;
1338}
1339EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1340
1341struct ieee80211_hw *wl1251_alloc_hw(void)
1342{
1343 struct ieee80211_hw *hw;
1344 struct wl1251 *wl;
1345 int i;
1346 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1347
1348 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1349 if (!hw) {
1350 wl1251_error("could not alloc ieee80211_hw");
1351 return ERR_PTR(-ENOMEM);
1352 }
1353
1354 wl = hw->priv;
1355 memset(wl, 0, sizeof(*wl));
1356
1357 wl->hw = hw;
1358
1359 wl->data_in_count = 0;
1360
1361 skb_queue_head_init(&wl->tx_queue);
1362
1363 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1364 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1365 wl->channel = WL1251_DEFAULT_CHANNEL;
1366 wl->scanning = false;
1367 wl->default_key = 0;
1368 wl->listen_int = 1;
1369 wl->rx_counter = 0;
1370 wl->rx_handled = 0;
1371 wl->rx_current_buffer = 0;
1372 wl->rx_last_id = 0;
1373 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1374 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1375 wl->elp = false;
1376 wl->psm = 0;
1377 wl->psm_requested = false;
1378 wl->tx_queue_stopped = false;
1379 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1380 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1381 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1382 wl->vif = NULL;
1383
1384 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1385 wl->tx_frames[i] = NULL;
1386
1387 wl->next_tx_complete = 0;
1388
1389 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1390 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1391
1392
1393
1394
1395
1396 memcpy(wl->mac_addr, nokia_oui, 3);
1397 get_random_bytes(wl->mac_addr + 3, 3);
1398
1399 wl->state = WL1251_STATE_OFF;
1400 mutex_init(&wl->mutex);
1401
1402 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1403 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1404
1405 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1406 if (!wl->rx_descriptor) {
1407 wl1251_error("could not allocate memory for rx descriptor");
1408 ieee80211_free_hw(hw);
1409 return ERR_PTR(-ENOMEM);
1410 }
1411
1412 return hw;
1413}
1414EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1415
1416int wl1251_free_hw(struct wl1251 *wl)
1417{
1418 ieee80211_unregister_hw(wl->hw);
1419
1420 wl1251_debugfs_exit(wl);
1421
1422 kfree(wl->target_mem_map);
1423 kfree(wl->data_path);
1424 vfree(wl->fw);
1425 wl->fw = NULL;
1426 kfree(wl->nvs);
1427 wl->nvs = NULL;
1428
1429 kfree(wl->rx_descriptor);
1430 wl->rx_descriptor = NULL;
1431
1432 ieee80211_free_hw(wl->hw);
1433
1434 return 0;
1435}
1436EXPORT_SYMBOL_GPL(wl1251_free_hw);
1437
1438MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1439MODULE_LICENSE("GPL");
1440MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1441MODULE_FIRMWARE(WL1251_FW_NAME);
1442
