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