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wl1271: Correct TKIP header space handling in TX path
[net-next-2.6.git] / drivers / net / wireless / wl12xx / wl1271_main.c
CommitLineData
f5fc0f86
LC		 1/*
2 * This file is part of wl1271
3 *
4 * Copyright (C) 2008-2009 Nokia Corporation
5 *
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 */
23
24#include <linux/module.h>
25#include <linux/platform_device.h>
26#include <linux/interrupt.h>
27#include <linux/firmware.h>
28#include <linux/delay.h>
29#include <linux/irq.h>
30#include <linux/spi/spi.h>
31#include <linux/crc32.h>
32#include <linux/etherdevice.h>
33#include <linux/spi/wl12xx.h>
34
35#include "wl1271.h"
36#include "wl12xx_80211.h"
37#include "wl1271_reg.h"
38#include "wl1271_spi.h"
39#include "wl1271_event.h"
40#include "wl1271_tx.h"
41#include "wl1271_rx.h"
42#include "wl1271_ps.h"
43#include "wl1271_init.h"
44#include "wl1271_debugfs.h"
45#include "wl1271_cmd.h"
46#include "wl1271_boot.h"
47
48static int wl1271_plt_init(struct wl1271 *wl)
49{
50 int ret;
51
52 ret = wl1271_acx_init_mem_config(wl);
53 if (ret < 0)
54 return ret;
55
56 ret = wl1271_cmd_data_path(wl, wl->channel, 1);
57 if (ret < 0)
58 return ret;
59
60 return 0;
61}
62
63static void wl1271_disable_interrupts(struct wl1271 *wl)
64{
65 disable_irq(wl->irq);
66}
67
68static void wl1271_power_off(struct wl1271 *wl)
69{
70 wl->set_power(false);
71}
72
73static void wl1271_power_on(struct wl1271 *wl)
74{
75 wl->set_power(true);
76}
77
78static void wl1271_fw_status(struct wl1271 *wl, struct wl1271_fw_status *status)
79{
80 u32 total = 0;
81 int i;
82
83 /*
84 * FIXME: Reading the FW status directly from the registers seems to
85 * be the right thing to do, but it doesn't work. And in the
86 * reference driver, there is a workaround called
87 * USE_SDIO_24M_WORKAROUND, which reads the status from memory
88 * instead, so we do the same here.
89 */
90
91 wl1271_spi_mem_read(wl, STATUS_MEM_ADDRESS, status, sizeof(*status));
92
93 wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
94 "drv_rx_counter = %d, tx_results_counter = %d)",
95 status->intr,
96 status->fw_rx_counter,
97 status->drv_rx_counter,
98 status->tx_results_counter);
99
100 /* update number of available TX blocks */
101 for (i = 0; i < NUM_TX_QUEUES; i++) {
102 u32 cnt = status->tx_released_blks[i] - wl->tx_blocks_freed[i];
103 wl->tx_blocks_freed[i] = status->tx_released_blks[i];
104 wl->tx_blocks_available += cnt;
105 total += cnt;
106 }
107
108 /* if more blocks are available now, schedule some tx work */
109 if (total && !skb_queue_empty(&wl->tx_queue))
110 schedule_work(&wl->tx_work);
111
112 /* update the host-chipset time offset */
113 wl->time_offset = jiffies_to_usecs(jiffies) - status->fw_localtime;
114}
115
116#define WL1271_IRQ_MAX_LOOPS 10
117static void wl1271_irq_work(struct work_struct *work)
118{
119 u32 intr, ctr = WL1271_IRQ_MAX_LOOPS;
120 int ret;
121 struct wl1271 *wl =
122 container_of(work, struct wl1271, irq_work);
123
124 mutex_lock(&wl->mutex);
125
126 wl1271_debug(DEBUG_IRQ, "IRQ work");
127
128 if (wl->state == WL1271_STATE_OFF)
129 goto out;
130
131 ret = wl1271_ps_elp_wakeup(wl, true);
132 if (ret < 0)
133 goto out;
134
135 wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1271_ACX_INTR_ALL);
136
137 intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
138 if (!intr) {
139 wl1271_debug(DEBUG_IRQ, "Zero interrupt received.");
140 goto out_sleep;
141 }
142
143 intr &= WL1271_INTR_MASK;
144
145 do {
146 wl1271_fw_status(wl, wl->fw_status);
147
148
149 if (intr & (WL1271_ACX_INTR_EVENT_A |
150 WL1271_ACX_INTR_EVENT_B)) {
151 wl1271_debug(DEBUG_IRQ,
152 "WL1271_ACX_INTR_EVENT (0x%x)", intr);
153 if (intr & WL1271_ACX_INTR_EVENT_A)
154 wl1271_event_handle(wl, 0);
155 else
156 wl1271_event_handle(wl, 1);
157 }
158
159 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
160 wl1271_debug(DEBUG_IRQ,
161 "WL1271_ACX_INTR_INIT_COMPLETE");
162
163 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
164 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
165
166 if (intr & WL1271_ACX_INTR_DATA) {
167 u8 tx_res_cnt = wl->fw_status->tx_results_counter -
168 wl->tx_results_count;
169
170 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
171
172 /* check for tx results */
173 if (tx_res_cnt)
174 wl1271_tx_complete(wl, tx_res_cnt);
175
176 wl1271_rx(wl, wl->fw_status);
177 }
178
179 intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
180 intr &= WL1271_INTR_MASK;
181 } while (intr && --ctr);
182
183out_sleep:
73d0a13c
LC		 184 wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK,
185 WL1271_ACX_INTR_ALL & ~(WL1271_INTR_MASK));
f5fc0f86
LC		 186 wl1271_ps_elp_sleep(wl);
187
188out:
189 mutex_unlock(&wl->mutex);
190}
191
192static irqreturn_t wl1271_irq(int irq, void *cookie)
193{
194 struct wl1271 *wl;
195 unsigned long flags;
196
197 wl1271_debug(DEBUG_IRQ, "IRQ");
198
199 wl = cookie;
200
201 /* complete the ELP completion */
202 spin_lock_irqsave(&wl->wl_lock, flags);
203 if (wl->elp_compl) {
204 complete(wl->elp_compl);
205 wl->elp_compl = NULL;
206 }
207
208 schedule_work(&wl->irq_work);
209 spin_unlock_irqrestore(&wl->wl_lock, flags);
210
211 return IRQ_HANDLED;
212}
213
214static int wl1271_fetch_firmware(struct wl1271 *wl)
215{
216 const struct firmware *fw;
217 int ret;
218
219 ret = request_firmware(&fw, WL1271_FW_NAME, &wl->spi->dev);
220
221 if (ret < 0) {
222 wl1271_error("could not get firmware: %d", ret);
223 return ret;
224 }
225
226 if (fw->size % 4) {
227 wl1271_error("firmware size is not multiple of 32 bits: %zu",
228 fw->size);
229 ret = -EILSEQ;
230 goto out;
231 }
232
233 wl->fw_len = fw->size;
234 wl->fw = kmalloc(wl->fw_len, GFP_KERNEL);
235
236 if (!wl->fw) {
237 wl1271_error("could not allocate memory for the firmware");
238 ret = -ENOMEM;
239 goto out;
240 }
241
242 memcpy(wl->fw, fw->data, wl->fw_len);
243
244 ret = 0;
245
246out:
247 release_firmware(fw);
248
249 return ret;
250}
251
252static int wl1271_fetch_nvs(struct wl1271 *wl)
253{
254 const struct firmware *fw;
255 int ret;
256
257 ret = request_firmware(&fw, WL1271_NVS_NAME, &wl->spi->dev);
258
259 if (ret < 0) {
260 wl1271_error("could not get nvs file: %d", ret);
261 return ret;
262 }
263
264 if (fw->size % 4) {
265 wl1271_error("nvs size is not multiple of 32 bits: %zu",
266 fw->size);
267 ret = -EILSEQ;
268 goto out;
269 }
270
271 wl->nvs_len = fw->size;
272 wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
273
274 if (!wl->nvs) {
275 wl1271_error("could not allocate memory for the nvs file");
276 ret = -ENOMEM;
277 goto out;
278 }
279
280 memcpy(wl->nvs, fw->data, wl->nvs_len);
281
282 ret = 0;
283
284out:
285 release_firmware(fw);
286
287 return ret;
288}
289
290static void wl1271_fw_wakeup(struct wl1271 *wl)
291{
292 u32 elp_reg;
293
294 elp_reg = ELPCTRL_WAKE_UP;
295 wl1271_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
296}
297
298static int wl1271_setup(struct wl1271 *wl)
299{
300 wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
301 if (!wl->fw_status)
302 return -ENOMEM;
303
304 wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
305 if (!wl->tx_res_if) {
306 kfree(wl->fw_status);
307 return -ENOMEM;
308 }
309
310 INIT_WORK(&wl->irq_work, wl1271_irq_work);
311 INIT_WORK(&wl->tx_work, wl1271_tx_work);
312 return 0;
313}
314
315static int wl1271_chip_wakeup(struct wl1271 *wl)
316{
317 int ret = 0;
318
319 wl1271_power_on(wl);
320 msleep(WL1271_POWER_ON_SLEEP);
321 wl1271_spi_reset(wl);
322 wl1271_spi_init(wl);
323
324 /* We don't need a real memory partition here, because we only want
325 * to use the registers at this point. */
326 wl1271_set_partition(wl,
327 0x00000000,
328 0x00000000,
329 REGISTERS_BASE,
330 REGISTERS_DOWN_SIZE);
331
332 /* ELP module wake up */
333 wl1271_fw_wakeup(wl);
334
335 /* whal_FwCtrl_BootSm() */
336
337 /* 0. read chip id from CHIP_ID */
338 wl->chip.id = wl1271_reg_read32(wl, CHIP_ID_B);
339
340 /* 1. check if chip id is valid */
341
342 switch (wl->chip.id) {
343 case CHIP_ID_1271_PG10:
344 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
345 wl->chip.id);
346
347 ret = wl1271_setup(wl);
348 if (ret < 0)
349 goto out;
350 break;
351 case CHIP_ID_1271_PG20:
352 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
353 wl->chip.id);
354
355 ret = wl1271_setup(wl);
356 if (ret < 0)
357 goto out;
358 break;
359 default:
360 wl1271_error("unsupported chip id: 0x%x", wl->chip.id);
361 ret = -ENODEV;
362 goto out;
363 }
364
365 if (wl->fw == NULL) {
366 ret = wl1271_fetch_firmware(wl);
367 if (ret < 0)
368 goto out;
369 }
370
371 /* No NVS from netlink, try to get it from the filesystem */
372 if (wl->nvs == NULL) {
373 ret = wl1271_fetch_nvs(wl);
374 if (ret < 0)
375 goto out;
376 }
377
378out:
379 return ret;
380}
381
382static void wl1271_filter_work(struct work_struct *work)
383{
384 struct wl1271 *wl =
385 container_of(work, struct wl1271, filter_work);
386 int ret;
387
388 mutex_lock(&wl->mutex);
389
390 if (wl->state == WL1271_STATE_OFF)
391 goto out;
392
393 ret = wl1271_ps_elp_wakeup(wl, false);
394 if (ret < 0)
395 goto out;
396
397 /* FIXME: replace the magic numbers with proper definitions */
398 ret = wl1271_cmd_join(wl, wl->bss_type, 1, 100, 0);
399 if (ret < 0)
400 goto out_sleep;
401
402out_sleep:
403 wl1271_ps_elp_sleep(wl);
404
405out:
406 mutex_unlock(&wl->mutex);
407}
408
409int wl1271_plt_start(struct wl1271 *wl)
410{
411 int ret;
412
413 mutex_lock(&wl->mutex);
414
415 wl1271_notice("power up");
416
417 if (wl->state != WL1271_STATE_OFF) {
418 wl1271_error("cannot go into PLT state because not "
419 "in off state: %d", wl->state);
420 ret = -EBUSY;
421 goto out;
422 }
423
424 wl->state = WL1271_STATE_PLT;
425
426 ret = wl1271_chip_wakeup(wl);
427 if (ret < 0)
428 goto out;
429
430 ret = wl1271_boot(wl);
431 if (ret < 0)
432 goto out;
433
434 wl1271_notice("firmware booted in PLT mode (%s)", wl->chip.fw_ver);
435
436 ret = wl1271_plt_init(wl);
437 if (ret < 0)
438 goto out;
439
440out:
441 mutex_unlock(&wl->mutex);
442
443 return ret;
444}
445
446int wl1271_plt_stop(struct wl1271 *wl)
447{
448 int ret = 0;
449
450 mutex_lock(&wl->mutex);
451
452 wl1271_notice("power down");
453
454 if (wl->state != WL1271_STATE_PLT) {
455 wl1271_error("cannot power down because not in PLT "
456 "state: %d", wl->state);
457 ret = -EBUSY;
458 goto out;
459 }
460
461 wl1271_disable_interrupts(wl);
462 wl1271_power_off(wl);
463
464 wl->state = WL1271_STATE_OFF;
465
466out:
467 mutex_unlock(&wl->mutex);
468
469 return ret;
470}
471
472
473static int wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
474{
475 struct wl1271 *wl = hw->priv;
476
477 skb_queue_tail(&wl->tx_queue, skb);
478
479 /*
480 * The chip specific setup must run before the first TX packet -
481 * before that, the tx_work will not be initialized!
482 */
483
484 schedule_work(&wl->tx_work);
485
486 /*
487 * The workqueue is slow to process the tx_queue and we need stop
488 * the queue here, otherwise the queue will get too long.
489 */
490 if (skb_queue_len(&wl->tx_queue) >= WL1271_TX_QUEUE_MAX_LENGTH) {
491 ieee80211_stop_queues(wl->hw);
492
493 /*
494 * FIXME: this is racy, the variable is not properly
495 * protected. Maybe fix this by removing the stupid
496 * variable altogether and checking the real queue state?
497 */
498 wl->tx_queue_stopped = true;
499 }
500
501 return NETDEV_TX_OK;
502}
503
504static int wl1271_op_start(struct ieee80211_hw *hw)
505{
506 struct wl1271 *wl = hw->priv;
507 int ret = 0;
508
509 wl1271_debug(DEBUG_MAC80211, "mac80211 start");
510
511 mutex_lock(&wl->mutex);
512
513 if (wl->state != WL1271_STATE_OFF) {
514 wl1271_error("cannot start because not in off state: %d",
515 wl->state);
516 ret = -EBUSY;
517 goto out;
518 }
519
520 ret = wl1271_chip_wakeup(wl);
521 if (ret < 0)
522 goto out;
523
524 ret = wl1271_boot(wl);
525 if (ret < 0)
526 goto out;
527
528 ret = wl1271_hw_init(wl);
529 if (ret < 0)
530 goto out;
531
532 wl->state = WL1271_STATE_ON;
533
534 wl1271_info("firmware booted (%s)", wl->chip.fw_ver);
535
536out:
537 if (ret < 0)
538 wl1271_power_off(wl);
539
540 mutex_unlock(&wl->mutex);
541
542 return ret;
543}
544
545static void wl1271_op_stop(struct ieee80211_hw *hw)
546{
547 struct wl1271 *wl = hw->priv;
548 int i;
549
550 wl1271_info("down");
551
552 wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
553
554 mutex_lock(&wl->mutex);
555
556 WARN_ON(wl->state != WL1271_STATE_ON);
557
558 if (wl->scanning) {
559 mutex_unlock(&wl->mutex);
560 ieee80211_scan_completed(wl->hw, true);
561 mutex_lock(&wl->mutex);
562 wl->scanning = false;
563 }
564
565 wl->state = WL1271_STATE_OFF;
566
567 wl1271_disable_interrupts(wl);
568
569 mutex_unlock(&wl->mutex);
570
571 cancel_work_sync(&wl->irq_work);
572 cancel_work_sync(&wl->tx_work);
573 cancel_work_sync(&wl->filter_work);
574
575 mutex_lock(&wl->mutex);
576
577 /* let's notify MAC80211 about the remaining pending TX frames */
578 wl1271_tx_flush(wl);
579 wl1271_power_off(wl);
580
581 memset(wl->bssid, 0, ETH_ALEN);
582 memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
583 wl->ssid_len = 0;
584 wl->listen_int = 1;
585 wl->bss_type = MAX_BSS_TYPE;
586
587 wl->rx_counter = 0;
588 wl->elp = false;
589 wl->psm = 0;
590 wl->tx_queue_stopped = false;
591 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
592 wl->tx_blocks_available = 0;
593 wl->tx_results_count = 0;
594 wl->tx_packets_count = 0;
ac4e4ce5
JO		 595 wl->tx_security_last_seq = 0;
596 wl->tx_security_seq_16 = 0;
597 wl->tx_security_seq_32 = 0;
f5fc0f86
LC		 598 wl->time_offset = 0;
599 wl->session_counter = 0;
600 for (i = 0; i < NUM_TX_QUEUES; i++)
601 wl->tx_blocks_freed[i] = 0;
602
603 wl1271_debugfs_reset(wl);
604 mutex_unlock(&wl->mutex);
605}
606
607static int wl1271_op_add_interface(struct ieee80211_hw *hw,
608 struct ieee80211_if_init_conf *conf)
609{
610 struct wl1271 *wl = hw->priv;
f5fc0f86
LC		 611 int ret = 0;
612
e5539bcb
JL		 613 wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
614 conf->type, conf->mac_addr);
f5fc0f86
LC		 615
616 mutex_lock(&wl->mutex);
617
618 switch (conf->type) {
619 case NL80211_IFTYPE_STATION:
620 wl->bss_type = BSS_TYPE_STA_BSS;
621 break;
622 case NL80211_IFTYPE_ADHOC:
623 wl->bss_type = BSS_TYPE_IBSS;
624 break;
625 default:
626 ret = -EOPNOTSUPP;
627 goto out;
628 }
629
630 /* FIXME: what if conf->mac_addr changes? */
631
632out:
633 mutex_unlock(&wl->mutex);
634 return ret;
635}
636
637static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
638 struct ieee80211_if_init_conf *conf)
639{
640 wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
641}
642
643#if 0
644static int wl1271_op_config_interface(struct ieee80211_hw *hw,
645 struct ieee80211_vif *vif,
646 struct ieee80211_if_conf *conf)
647{
648 struct wl1271 *wl = hw->priv;
649 struct sk_buff *beacon;
f5fc0f86
LC		 650 int ret;
651
3264690b
DM		 652 wl1271_debug(DEBUG_MAC80211, "mac80211 config_interface bssid %pM",
653 conf->bssid);
f5fc0f86
LC		 654 wl1271_dump_ascii(DEBUG_MAC80211, "ssid: ", conf->ssid,
655 conf->ssid_len);
656
657 mutex_lock(&wl->mutex);
658
659 ret = wl1271_ps_elp_wakeup(wl, false);
660 if (ret < 0)
661 goto out;
662
663 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
664
665 ret = wl1271_cmd_build_null_data(wl);
666 if (ret < 0)
667 goto out_sleep;
668
669 wl->ssid_len = conf->ssid_len;
670 if (wl->ssid_len)
671 memcpy(wl->ssid, conf->ssid, wl->ssid_len);
672
673 if (wl->bss_type != BSS_TYPE_IBSS) {
674 /* FIXME: replace the magic numbers with proper definitions */
675 ret = wl1271_cmd_join(wl, wl->bss_type, 5, 100, 1);
676 if (ret < 0)
677 goto out_sleep;
678 }
679
680 if (conf->changed & IEEE80211_IFCC_BEACON) {
681 beacon = ieee80211_beacon_get(hw, vif);
682 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON,
683 beacon->data, beacon->len);
684
685 if (ret < 0) {
686 dev_kfree_skb(beacon);
687 goto out_sleep;
688 }
689
690 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PROBE_RESPONSE,
691 beacon->data, beacon->len);
692
693 dev_kfree_skb(beacon);
694
695 if (ret < 0)
696 goto out_sleep;
697
698 /* FIXME: replace the magic numbers with proper definitions */
699 ret = wl1271_cmd_join(wl, wl->bss_type, 1, 100, 0);
700
701 if (ret < 0)
702 goto out_sleep;
703 }
704
705out_sleep:
706 wl1271_ps_elp_sleep(wl);
707
708out:
709 mutex_unlock(&wl->mutex);
710
711 return ret;
712}
713#endif
714
715static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
716{
717 struct wl1271 *wl = hw->priv;
718 struct ieee80211_conf *conf = &hw->conf;
719 int channel, ret = 0;
720
721 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
722
723 wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
724 channel,
725 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
726 conf->power_level);
727
728 mutex_lock(&wl->mutex);
729
730 ret = wl1271_ps_elp_wakeup(wl, false);
731 if (ret < 0)
732 goto out;
733
734 if (channel != wl->channel) {
735 u8 old_channel = wl->channel;
736 wl->channel = channel;
737
738 /* FIXME: use beacon interval provided by mac80211 */
739 ret = wl1271_cmd_join(wl, wl->bss_type, 1, 100, 0);
740 if (ret < 0) {
741 wl->channel = old_channel;
742 goto out_sleep;
743 }
744 }
745
746 ret = wl1271_cmd_build_null_data(wl);
747 if (ret < 0)
748 goto out_sleep;
749
750 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
751 wl1271_info("psm enabled");
752
753 wl->psm_requested = true;
754
755 /*
756 * We enter PSM only if we're already associated.
757 * If we're not, we'll enter it when joining an SSID,
758 * through the bss_info_changed() hook.
759 */
760 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
761 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
762 wl->psm_requested) {
763 wl1271_info("psm disabled");
764
765 wl->psm_requested = false;
766
767 if (wl->psm)
768 ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE);
769 }
770
771 if (conf->power_level != wl->power_level) {
772 ret = wl1271_acx_tx_power(wl, conf->power_level);
773 if (ret < 0)
774 goto out;
775
776 wl->power_level = conf->power_level;
777 }
778
779out_sleep:
780 wl1271_ps_elp_sleep(wl);
781
782out:
783 mutex_unlock(&wl->mutex);
784
785 return ret;
786}
787
788#define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
789 FIF_ALLMULTI | \
790 FIF_FCSFAIL | \
791 FIF_BCN_PRBRESP_PROMISC | \
792 FIF_CONTROL | \
793 FIF_OTHER_BSS)
794
795static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
796 unsigned int changed,
3ac64bee 797 unsigned int *total,u64 multicast)
f5fc0f86
LC		 798{
799 struct wl1271 *wl = hw->priv;
800
801 wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter");
802
803 *total &= WL1271_SUPPORTED_FILTERS;
804 changed &= WL1271_SUPPORTED_FILTERS;
805
806 if (changed == 0)
807 return;
808
809 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
810 wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
811 wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
812
813 /*
814 * FIXME: workqueues need to be properly cancelled on stop(), for
815 * now let's just disable changing the filter settings. They will
816 * be updated any on config().
817 */
818 /* schedule_work(&wl->filter_work); */
819}
820
821static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
822 struct ieee80211_vif *vif,
823 struct ieee80211_sta *sta,
824 struct ieee80211_key_conf *key_conf)
825{
826 struct wl1271 *wl = hw->priv;
827 const u8 *addr;
828 int ret;
ac4e4ce5
JO		 829 u32 tx_seq_32 = 0;
830 u16 tx_seq_16 = 0;
f5fc0f86
LC		 831 u8 key_type;
832
833 static const u8 bcast_addr[ETH_ALEN] =
834 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
835
836 wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
837
838 addr = sta ? sta->addr : bcast_addr;
839
840 wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
841 wl1271_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
842 wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
843 key_conf->alg, key_conf->keyidx,
844 key_conf->keylen, key_conf->flags);
845 wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
846
847 if (is_zero_ether_addr(addr)) {
848 /* We dont support TX only encryption */
849 ret = -EOPNOTSUPP;
850 goto out;
851 }
852
853 mutex_lock(&wl->mutex);
854
855 ret = wl1271_ps_elp_wakeup(wl, false);
856 if (ret < 0)
857 goto out_unlock;
858
859 switch (key_conf->alg) {
860 case ALG_WEP:
861 key_type = KEY_WEP;
862
863 key_conf->hw_key_idx = key_conf->keyidx;
864 break;
865 case ALG_TKIP:
866 key_type = KEY_TKIP;
867
868 key_conf->hw_key_idx = key_conf->keyidx;
ac4e4ce5
JO		 869 tx_seq_32 = wl->tx_security_seq_32;
870 tx_seq_16 = wl->tx_security_seq_16;
f5fc0f86
LC		 871 break;
872 case ALG_CCMP:
873 key_type = KEY_AES;
874
875 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
ac4e4ce5
JO		 876 tx_seq_32 = wl->tx_security_seq_32;
877 tx_seq_16 = wl->tx_security_seq_16;
f5fc0f86
LC		 878 break;
879 default:
880 wl1271_error("Unknown key algo 0x%x", key_conf->alg);
881
882 ret = -EOPNOTSUPP;
883 goto out_sleep;
884 }
885
886 switch (cmd) {
887 case SET_KEY:
888 ret = wl1271_cmd_set_key(wl, KEY_ADD_OR_REPLACE,
889 key_conf->keyidx, key_type,
890 key_conf->keylen, key_conf->key,
ac4e4ce5 891 addr, tx_seq_32, tx_seq_16);
f5fc0f86
LC		 892 if (ret < 0) {
893 wl1271_error("Could not add or replace key");
894 goto out_sleep;
895 }
896 break;
897
898 case DISABLE_KEY:
899 ret = wl1271_cmd_set_key(wl, KEY_REMOVE,
900 key_conf->keyidx, key_type,
901 key_conf->keylen, key_conf->key,
ac4e4ce5 902 addr, 0, 0);
f5fc0f86
LC		 903 if (ret < 0) {
904 wl1271_error("Could not remove key");
905 goto out_sleep;
906 }
907 break;
908
909 default:
910 wl1271_error("Unsupported key cmd 0x%x", cmd);
911 ret = -EOPNOTSUPP;
912 goto out_sleep;
913
914 break;
915 }
916
917out_sleep:
918 wl1271_ps_elp_sleep(wl);
919
920out_unlock:
921 mutex_unlock(&wl->mutex);
922
923out:
924 return ret;
925}
926
927static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
928 struct cfg80211_scan_request *req)
929{
930 struct wl1271 *wl = hw->priv;
931 int ret;
932 u8 *ssid = NULL;
933 size_t ssid_len = 0;
934
935 wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
936
937 if (req->n_ssids) {
938 ssid = req->ssids[0].ssid;
939 ssid_len = req->ssids[0].ssid_len;
940 }
941
942 mutex_lock(&wl->mutex);
943
944 ret = wl1271_ps_elp_wakeup(wl, false);
945 if (ret < 0)
946 goto out;
947
948 ret = wl1271_cmd_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
949
950 wl1271_ps_elp_sleep(wl);
951
952out:
953 mutex_unlock(&wl->mutex);
954
955 return ret;
956}
957
958static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
959{
960 struct wl1271 *wl = hw->priv;
961 int ret;
962
963 mutex_lock(&wl->mutex);
964
965 ret = wl1271_ps_elp_wakeup(wl, false);
966 if (ret < 0)
967 goto out;
968
969 ret = wl1271_acx_rts_threshold(wl, (u16) value);
970 if (ret < 0)
971 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
972
973 wl1271_ps_elp_sleep(wl);
974
975out:
976 mutex_unlock(&wl->mutex);
977
978 return ret;
979}
980
981static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
982 struct ieee80211_vif *vif,
983 struct ieee80211_bss_conf *bss_conf,
984 u32 changed)
985{
986 enum wl1271_cmd_ps_mode mode;
987 struct wl1271 *wl = hw->priv;
988 int ret;
989
990 wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed");
991
992 mutex_lock(&wl->mutex);
993
994 ret = wl1271_ps_elp_wakeup(wl, false);
995 if (ret < 0)
996 goto out;
997
998 if (changed & BSS_CHANGED_ASSOC) {
999 if (bss_conf->assoc) {
1000 wl->aid = bss_conf->aid;
1001
1002 ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
1003 if (ret < 0)
1004 goto out_sleep;
1005
1006 ret = wl1271_acx_aid(wl, wl->aid);
1007 if (ret < 0)
1008 goto out_sleep;
1009
1010 /* If we want to go in PSM but we're not there yet */
1011 if (wl->psm_requested && !wl->psm) {
1012 mode = STATION_POWER_SAVE_MODE;
1013 ret = wl1271_ps_set_mode(wl, mode);
1014 if (ret < 0)
1015 goto out_sleep;
1016 }
1017 }
1018 }
1019 if (changed & BSS_CHANGED_ERP_SLOT) {
1020 if (bss_conf->use_short_slot)
1021 ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
1022 else
1023 ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
1024 if (ret < 0) {
1025 wl1271_warning("Set slot time failed %d", ret);
1026 goto out_sleep;
1027 }
1028 }
1029
1030 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1031 if (bss_conf->use_short_preamble)
1032 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1033 else
1034 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1035 }
1036
1037 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1038 if (bss_conf->use_cts_prot)
1039 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1040 else
1041 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1042 if (ret < 0) {
1043 wl1271_warning("Set ctsprotect failed %d", ret);
1044 goto out_sleep;
1045 }
1046 }
1047
1048out_sleep:
1049 wl1271_ps_elp_sleep(wl);
1050
1051out:
1052 mutex_unlock(&wl->mutex);
1053}
1054
1055
1056/* can't be const, mac80211 writes to this */
1057static struct ieee80211_rate wl1271_rates[] = {
1058 { .bitrate = 10,
1059 .hw_value = 0x1,
1060 .hw_value_short = 0x1, },
1061 { .bitrate = 20,
1062 .hw_value = 0x2,
1063 .hw_value_short = 0x2,
1064 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1065 { .bitrate = 55,
1066 .hw_value = 0x4,
1067 .hw_value_short = 0x4,
1068 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1069 { .bitrate = 110,
1070 .hw_value = 0x20,
1071 .hw_value_short = 0x20,
1072 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1073 { .bitrate = 60,
1074 .hw_value = 0x8,
1075 .hw_value_short = 0x8, },
1076 { .bitrate = 90,
1077 .hw_value = 0x10,
1078 .hw_value_short = 0x10, },
1079 { .bitrate = 120,
1080 .hw_value = 0x40,
1081 .hw_value_short = 0x40, },
1082 { .bitrate = 180,
1083 .hw_value = 0x80,
1084 .hw_value_short = 0x80, },
1085 { .bitrate = 240,
1086 .hw_value = 0x200,
1087 .hw_value_short = 0x200, },
1088 { .bitrate = 360,
1089 .hw_value = 0x400,
1090 .hw_value_short = 0x400, },
1091 { .bitrate = 480,
1092 .hw_value = 0x800,
1093 .hw_value_short = 0x800, },
1094 { .bitrate = 540,
1095 .hw_value = 0x1000,
1096 .hw_value_short = 0x1000, },
1097};
1098
1099/* can't be const, mac80211 writes to this */
1100static struct ieee80211_channel wl1271_channels[] = {
1101 { .hw_value = 1, .center_freq = 2412},
1102 { .hw_value = 2, .center_freq = 2417},
1103 { .hw_value = 3, .center_freq = 2422},
1104 { .hw_value = 4, .center_freq = 2427},
1105 { .hw_value = 5, .center_freq = 2432},
1106 { .hw_value = 6, .center_freq = 2437},
1107 { .hw_value = 7, .center_freq = 2442},
1108 { .hw_value = 8, .center_freq = 2447},
1109 { .hw_value = 9, .center_freq = 2452},
1110 { .hw_value = 10, .center_freq = 2457},
1111 { .hw_value = 11, .center_freq = 2462},
1112 { .hw_value = 12, .center_freq = 2467},
1113 { .hw_value = 13, .center_freq = 2472},
1114};
1115
1116/* can't be const, mac80211 writes to this */
1117static struct ieee80211_supported_band wl1271_band_2ghz = {
1118 .channels = wl1271_channels,
1119 .n_channels = ARRAY_SIZE(wl1271_channels),
1120 .bitrates = wl1271_rates,
1121 .n_bitrates = ARRAY_SIZE(wl1271_rates),
1122};
1123
1124static const struct ieee80211_ops wl1271_ops = {
1125 .start = wl1271_op_start,
1126 .stop = wl1271_op_stop,
1127 .add_interface = wl1271_op_add_interface,
1128 .remove_interface = wl1271_op_remove_interface,
1129 .config = wl1271_op_config,
1130/* .config_interface = wl1271_op_config_interface, */
1131 .configure_filter = wl1271_op_configure_filter,
1132 .tx = wl1271_op_tx,
1133 .set_key = wl1271_op_set_key,
1134 .hw_scan = wl1271_op_hw_scan,
1135 .bss_info_changed = wl1271_op_bss_info_changed,
1136 .set_rts_threshold = wl1271_op_set_rts_threshold,
1137};
1138
1139static int wl1271_register_hw(struct wl1271 *wl)
1140{
1141 int ret;
1142
1143 if (wl->mac80211_registered)
1144 return 0;
1145
1146 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1147
1148 ret = ieee80211_register_hw(wl->hw);
1149 if (ret < 0) {
1150 wl1271_error("unable to register mac80211 hw: %d", ret);
1151 return ret;
1152 }
1153
1154 wl->mac80211_registered = true;
1155
1156 wl1271_notice("loaded");
1157
1158 return 0;
1159}
1160
1161static int wl1271_init_ieee80211(struct wl1271 *wl)
1162{
1e2b7976
JO		 1163 /* The tx descriptor buffer and the TKIP space. */
1164 wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
1165 sizeof(struct wl1271_tx_hw_descr);
f5fc0f86
LC		 1166
1167 /* unit us */
1168 /* FIXME: find a proper value */
1169 wl->hw->channel_change_time = 10000;
1170
1171 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1172 IEEE80211_HW_NOISE_DBM;
1173
1174 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1175 wl->hw->wiphy->max_scan_ssids = 1;
1176 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz;
1177
1178 SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
1179
1180 return 0;
1181}
1182
1183static void wl1271_device_release(struct device *dev)
1184{
1185
1186}
1187
1188static struct platform_device wl1271_device = {
1189 .name = "wl1271",
1190 .id = -1,
1191
1192 /* device model insists to have a release function */
1193 .dev = {
1194 .release = wl1271_device_release,
1195 },
1196};
1197
1198#define WL1271_DEFAULT_CHANNEL 0
1199static int __devinit wl1271_probe(struct spi_device *spi)
1200{
1201 struct wl12xx_platform_data *pdata;
1202 struct ieee80211_hw *hw;
1203 struct wl1271 *wl;
1204 int ret, i;
1205 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1206
1207 pdata = spi->dev.platform_data;
1208 if (!pdata) {
1209 wl1271_error("no platform data");
1210 return -ENODEV;
1211 }
1212
1213 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
1214 if (!hw) {
1215 wl1271_error("could not alloc ieee80211_hw");
1216 return -ENOMEM;
1217 }
1218
1219 wl = hw->priv;
1220 memset(wl, 0, sizeof(*wl));
1221
1222 wl->hw = hw;
1223 dev_set_drvdata(&spi->dev, wl);
1224 wl->spi = spi;
1225
1226 skb_queue_head_init(&wl->tx_queue);
1227
1228 INIT_WORK(&wl->filter_work, wl1271_filter_work);
1229 wl->channel = WL1271_DEFAULT_CHANNEL;
1230 wl->scanning = false;
1231 wl->default_key = 0;
1232 wl->listen_int = 1;
1233 wl->rx_counter = 0;
1234 wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
1235 wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
1236 wl->elp = false;
1237 wl->psm = 0;
1238 wl->psm_requested = false;
1239 wl->tx_queue_stopped = false;
1240 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1241
1242 /* We use the default power on sleep time until we know which chip
1243 * we're using */
1244 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1245 wl->tx_frames[i] = NULL;
1246
1247 spin_lock_init(&wl->wl_lock);
1248
1249 /*
1250 * In case our MAC address is not correctly set,
1251 * we use a random but Nokia MAC.
1252 */
1253 memcpy(wl->mac_addr, nokia_oui, 3);
1254 get_random_bytes(wl->mac_addr + 3, 3);
1255
1256 wl->state = WL1271_STATE_OFF;
1257 mutex_init(&wl->mutex);
1258
1259 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1260 if (!wl->rx_descriptor) {
1261 wl1271_error("could not allocate memory for rx descriptor");
1262 ret = -ENOMEM;
1263 goto out_free;
1264 }
1265
1266 /* This is the only SPI value that we need to set here, the rest
1267 * comes from the board-peripherals file */
1268 spi->bits_per_word = 32;
1269
1270 ret = spi_setup(spi);
1271 if (ret < 0) {
1272 wl1271_error("spi_setup failed");
1273 goto out_free;
1274 }
1275
1276 wl->set_power = pdata->set_power;
1277 if (!wl->set_power) {
1278 wl1271_error("set power function missing in platform data");
1279 ret = -ENODEV;
1280 goto out_free;
1281 }
1282
1283 wl->irq = spi->irq;
1284 if (wl->irq < 0) {
1285 wl1271_error("irq missing in platform data");
1286 ret = -ENODEV;
1287 goto out_free;
1288 }
1289
1290 ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
1291 if (ret < 0) {
1292 wl1271_error("request_irq() failed: %d", ret);
1293 goto out_free;
1294 }
1295
1296 set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
1297
1298 disable_irq(wl->irq);
1299
1300 ret = platform_device_register(&wl1271_device);
1301 if (ret) {
1302 wl1271_error("couldn't register platform device");
1303 goto out_irq;
1304 }
1305 dev_set_drvdata(&wl1271_device.dev, wl);
1306
1307 ret = wl1271_init_ieee80211(wl);
1308 if (ret)
1309 goto out_platform;
1310
1311 ret = wl1271_register_hw(wl);
1312 if (ret)
1313 goto out_platform;
1314
1315 wl1271_debugfs_init(wl);
1316
1317 wl1271_notice("initialized");
1318
1319 return 0;
1320
1321 out_platform:
1322 platform_device_unregister(&wl1271_device);
1323
1324 out_irq:
1325 free_irq(wl->irq, wl);
1326
1327 out_free:
1328 kfree(wl->rx_descriptor);
1329 wl->rx_descriptor = NULL;
1330
1331 ieee80211_free_hw(hw);
1332
1333 return ret;
1334}
1335
1336static int __devexit wl1271_remove(struct spi_device *spi)
1337{
1338 struct wl1271 *wl = dev_get_drvdata(&spi->dev);
1339
1340 ieee80211_unregister_hw(wl->hw);
1341
1342 wl1271_debugfs_exit(wl);
1343 platform_device_unregister(&wl1271_device);
1344 free_irq(wl->irq, wl);
1345 kfree(wl->target_mem_map);
1346 kfree(wl->fw);
1347 wl->fw = NULL;
1348 kfree(wl->nvs);
1349 wl->nvs = NULL;
1350
1351 kfree(wl->rx_descriptor);
1352 wl->rx_descriptor = NULL;
1353
1354 kfree(wl->fw_status);
1355 kfree(wl->tx_res_if);
1356
1357 ieee80211_free_hw(wl->hw);
1358
1359 return 0;
1360}
1361
1362
1363static struct spi_driver wl1271_spi_driver = {
1364 .driver = {
1365 .name = "wl1271",
1366 .bus = &spi_bus_type,
1367 .owner = THIS_MODULE,
1368 },
1369
1370 .probe = wl1271_probe,
1371 .remove = __devexit_p(wl1271_remove),
1372};
1373
1374static int __init wl1271_init(void)
1375{
1376 int ret;
1377
1378 ret = spi_register_driver(&wl1271_spi_driver);
1379 if (ret < 0) {
1380 wl1271_error("failed to register spi driver: %d", ret);
1381 goto out;
1382 }
1383
1384out:
1385 return ret;
1386}
1387
1388static void __exit wl1271_exit(void)
1389{
1390 spi_unregister_driver(&wl1271_spi_driver);
1391
1392 wl1271_notice("unloaded");
1393}
1394
1395module_init(wl1271_init);
1396module_exit(wl1271_exit);
1397
1398MODULE_LICENSE("GPL");
1399MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
Clone of davem's net-next-2.6 tree