Commit | Line | Data |
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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 | ||
48 | static 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 | ||
63 | static void wl1271_disable_interrupts(struct wl1271 *wl) | |
64 | { | |
65 | disable_irq(wl->irq); | |
66 | } | |
67 | ||
68 | static void wl1271_power_off(struct wl1271 *wl) | |
69 | { | |
70 | wl->set_power(false); | |
71 | } | |
72 | ||
73 | static void wl1271_power_on(struct wl1271 *wl) | |
74 | { | |
75 | wl->set_power(true); | |
76 | } | |
77 | ||
78 | static 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 | |
117 | static 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 | ||
183 | out_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 | ||
188 | out: | |
189 | mutex_unlock(&wl->mutex); | |
190 | } | |
191 | ||
192 | static 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 | ||
214 | static 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 | ||
246 | out: | |
247 | release_firmware(fw); | |
248 | ||
249 | return ret; | |
250 | } | |
251 | ||
252 | static 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 | ||
284 | out: | |
285 | release_firmware(fw); | |
286 | ||
287 | return ret; | |
288 | } | |
289 | ||
290 | static 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 | ||
298 | static 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 | ||
315 | static 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 | ||
378 | out: | |
379 | return ret; | |
380 | } | |
381 | ||
382 | static 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 | ||
402 | out_sleep: | |
403 | wl1271_ps_elp_sleep(wl); | |
404 | ||
405 | out: | |
406 | mutex_unlock(&wl->mutex); | |
407 | } | |
408 | ||
409 | int 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 | ||
440 | out: | |
441 | mutex_unlock(&wl->mutex); | |
442 | ||
443 | return ret; | |
444 | } | |
445 | ||
446 | int 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 | ||
466 | out: | |
467 | mutex_unlock(&wl->mutex); | |
468 | ||
469 | return ret; | |
470 | } | |
471 | ||
472 | ||
473 | static 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 | ||
504 | static 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 | ||
536 | out: | |
537 | if (ret < 0) | |
538 | wl1271_power_off(wl); | |
539 | ||
540 | mutex_unlock(&wl->mutex); | |
541 | ||
542 | return ret; | |
543 | } | |
544 | ||
545 | static 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 | ||
607 | static 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 | ||
632 | out: | |
633 | mutex_unlock(&wl->mutex); | |
634 | return ret; | |
635 | } | |
636 | ||
637 | static 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 | |
644 | static 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 | ||
705 | out_sleep: | |
706 | wl1271_ps_elp_sleep(wl); | |
707 | ||
708 | out: | |
709 | mutex_unlock(&wl->mutex); | |
710 | ||
711 | return ret; | |
712 | } | |
713 | #endif | |
714 | ||
715 | static 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 | ||
779 | out_sleep: | |
780 | wl1271_ps_elp_sleep(wl); | |
781 | ||
782 | out: | |
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 | ||
795 | static 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 | ||
821 | static 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 | ||
917 | out_sleep: | |
918 | wl1271_ps_elp_sleep(wl); | |
919 | ||
920 | out_unlock: | |
921 | mutex_unlock(&wl->mutex); | |
922 | ||
923 | out: | |
924 | return ret; | |
925 | } | |
926 | ||
927 | static 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 | ||
952 | out: | |
953 | mutex_unlock(&wl->mutex); | |
954 | ||
955 | return ret; | |
956 | } | |
957 | ||
958 | static 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 | ||
975 | out: | |
976 | mutex_unlock(&wl->mutex); | |
977 | ||
978 | return ret; | |
979 | } | |
980 | ||
981 | static 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 | ||
1048 | out_sleep: | |
1049 | wl1271_ps_elp_sleep(wl); | |
1050 | ||
1051 | out: | |
1052 | mutex_unlock(&wl->mutex); | |
1053 | } | |
1054 | ||
1055 | ||
1056 | /* can't be const, mac80211 writes to this */ | |
1057 | static 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 */ | |
1100 | static 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 */ | |
1117 | static 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 | ||
1124 | static 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 | ||
1139 | static 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 | ||
1161 | static 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 | ||
1183 | static void wl1271_device_release(struct device *dev) | |
1184 | { | |
1185 | ||
1186 | } | |
1187 | ||
1188 | static 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 | |
1199 | static 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); | |
37b70a81 | 1229 | INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work); |
f5fc0f86 LC |
1230 | wl->channel = WL1271_DEFAULT_CHANNEL; |
1231 | wl->scanning = false; | |
1232 | wl->default_key = 0; | |
1233 | wl->listen_int = 1; | |
1234 | wl->rx_counter = 0; | |
1235 | wl->rx_config = WL1271_DEFAULT_RX_CONFIG; | |
1236 | wl->rx_filter = WL1271_DEFAULT_RX_FILTER; | |
1237 | wl->elp = false; | |
1238 | wl->psm = 0; | |
1239 | wl->psm_requested = false; | |
1240 | wl->tx_queue_stopped = false; | |
1241 | wl->power_level = WL1271_DEFAULT_POWER_LEVEL; | |
1242 | ||
1243 | /* We use the default power on sleep time until we know which chip | |
1244 | * we're using */ | |
1245 | for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) | |
1246 | wl->tx_frames[i] = NULL; | |
1247 | ||
1248 | spin_lock_init(&wl->wl_lock); | |
1249 | ||
1250 | /* | |
1251 | * In case our MAC address is not correctly set, | |
1252 | * we use a random but Nokia MAC. | |
1253 | */ | |
1254 | memcpy(wl->mac_addr, nokia_oui, 3); | |
1255 | get_random_bytes(wl->mac_addr + 3, 3); | |
1256 | ||
1257 | wl->state = WL1271_STATE_OFF; | |
1258 | mutex_init(&wl->mutex); | |
1259 | ||
1260 | wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); | |
1261 | if (!wl->rx_descriptor) { | |
1262 | wl1271_error("could not allocate memory for rx descriptor"); | |
1263 | ret = -ENOMEM; | |
1264 | goto out_free; | |
1265 | } | |
1266 | ||
1267 | /* This is the only SPI value that we need to set here, the rest | |
1268 | * comes from the board-peripherals file */ | |
1269 | spi->bits_per_word = 32; | |
1270 | ||
1271 | ret = spi_setup(spi); | |
1272 | if (ret < 0) { | |
1273 | wl1271_error("spi_setup failed"); | |
1274 | goto out_free; | |
1275 | } | |
1276 | ||
1277 | wl->set_power = pdata->set_power; | |
1278 | if (!wl->set_power) { | |
1279 | wl1271_error("set power function missing in platform data"); | |
1280 | ret = -ENODEV; | |
1281 | goto out_free; | |
1282 | } | |
1283 | ||
1284 | wl->irq = spi->irq; | |
1285 | if (wl->irq < 0) { | |
1286 | wl1271_error("irq missing in platform data"); | |
1287 | ret = -ENODEV; | |
1288 | goto out_free; | |
1289 | } | |
1290 | ||
1291 | ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl); | |
1292 | if (ret < 0) { | |
1293 | wl1271_error("request_irq() failed: %d", ret); | |
1294 | goto out_free; | |
1295 | } | |
1296 | ||
1297 | set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING); | |
1298 | ||
1299 | disable_irq(wl->irq); | |
1300 | ||
1301 | ret = platform_device_register(&wl1271_device); | |
1302 | if (ret) { | |
1303 | wl1271_error("couldn't register platform device"); | |
1304 | goto out_irq; | |
1305 | } | |
1306 | dev_set_drvdata(&wl1271_device.dev, wl); | |
1307 | ||
1308 | ret = wl1271_init_ieee80211(wl); | |
1309 | if (ret) | |
1310 | goto out_platform; | |
1311 | ||
1312 | ret = wl1271_register_hw(wl); | |
1313 | if (ret) | |
1314 | goto out_platform; | |
1315 | ||
1316 | wl1271_debugfs_init(wl); | |
1317 | ||
1318 | wl1271_notice("initialized"); | |
1319 | ||
1320 | return 0; | |
1321 | ||
1322 | out_platform: | |
1323 | platform_device_unregister(&wl1271_device); | |
1324 | ||
1325 | out_irq: | |
1326 | free_irq(wl->irq, wl); | |
1327 | ||
1328 | out_free: | |
1329 | kfree(wl->rx_descriptor); | |
1330 | wl->rx_descriptor = NULL; | |
1331 | ||
1332 | ieee80211_free_hw(hw); | |
1333 | ||
1334 | return ret; | |
1335 | } | |
1336 | ||
1337 | static int __devexit wl1271_remove(struct spi_device *spi) | |
1338 | { | |
1339 | struct wl1271 *wl = dev_get_drvdata(&spi->dev); | |
1340 | ||
1341 | ieee80211_unregister_hw(wl->hw); | |
1342 | ||
1343 | wl1271_debugfs_exit(wl); | |
1344 | platform_device_unregister(&wl1271_device); | |
1345 | free_irq(wl->irq, wl); | |
1346 | kfree(wl->target_mem_map); | |
1347 | kfree(wl->fw); | |
1348 | wl->fw = NULL; | |
1349 | kfree(wl->nvs); | |
1350 | wl->nvs = NULL; | |
1351 | ||
1352 | kfree(wl->rx_descriptor); | |
1353 | wl->rx_descriptor = NULL; | |
1354 | ||
1355 | kfree(wl->fw_status); | |
1356 | kfree(wl->tx_res_if); | |
1357 | ||
1358 | ieee80211_free_hw(wl->hw); | |
1359 | ||
1360 | return 0; | |
1361 | } | |
1362 | ||
1363 | ||
1364 | static struct spi_driver wl1271_spi_driver = { | |
1365 | .driver = { | |
1366 | .name = "wl1271", | |
1367 | .bus = &spi_bus_type, | |
1368 | .owner = THIS_MODULE, | |
1369 | }, | |
1370 | ||
1371 | .probe = wl1271_probe, | |
1372 | .remove = __devexit_p(wl1271_remove), | |
1373 | }; | |
1374 | ||
1375 | static int __init wl1271_init(void) | |
1376 | { | |
1377 | int ret; | |
1378 | ||
1379 | ret = spi_register_driver(&wl1271_spi_driver); | |
1380 | if (ret < 0) { | |
1381 | wl1271_error("failed to register spi driver: %d", ret); | |
1382 | goto out; | |
1383 | } | |
1384 | ||
1385 | out: | |
1386 | return ret; | |
1387 | } | |
1388 | ||
1389 | static void __exit wl1271_exit(void) | |
1390 | { | |
1391 | spi_unregister_driver(&wl1271_spi_driver); | |
1392 | ||
1393 | wl1271_notice("unloaded"); | |
1394 | } | |
1395 | ||
1396 | module_init(wl1271_init); | |
1397 | module_exit(wl1271_exit); | |
1398 | ||
1399 | MODULE_LICENSE("GPL"); | |
1400 | MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>"); |