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Merge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
[linux-2.6-block.git] / drivers / net / wireless / wl12xx / wl1251_main.c
CommitLineData
2f01a1f5 1/*
80301cdc 2 * This file is part of wl1251
2f01a1f5
KV		 3 *
4 * Copyright (C) 2008-2009 Nokia Corporation
5 *
6 * Contact: Kalle Valo <kalle.valo@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/interrupt.h>
26#include <linux/firmware.h>
27#include <linux/delay.h>
28#include <linux/irq.h>
2f01a1f5
KV		 29#include <linux/crc32.h>
30#include <linux/etherdevice.h>
c74ddfd5 31#include <linux/vmalloc.h>
5a0e3ad6 32#include <linux/slab.h>
2f01a1f5 33
13674118 34#include "wl1251.h"
2f01a1f5 35#include "wl12xx_80211.h"
29d904c4 36#include "wl1251_reg.h"
0764de64 37#include "wl1251_io.h"
8e639c06 38#include "wl1251_cmd.h"
ef2f8d45 39#include "wl1251_event.h"
9f2ad4fb 40#include "wl1251_tx.h"
ef2f8d45
KV		 41#include "wl1251_rx.h"
42#include "wl1251_ps.h"
43#include "wl1251_init.h"
44#include "wl1251_debugfs.h"
0e71bb08 45#include "wl1251_boot.h"
2f01a1f5 46
b5ed9c1b 47void wl1251_enable_interrupts(struct wl1251 *wl)
2f01a1f5 48{
b5ed9c1b
BC		 49 wl->if_ops->enable_irq(wl);
50}
51
52void wl1251_disable_interrupts(struct wl1251 *wl)
53{
54 wl->if_ops->disable_irq(wl);
2f01a1f5
KV		 55}
56
80301cdc 57static void wl1251_power_off(struct wl1251 *wl)
2f01a1f5
KV		 58{
59 wl->set_power(false);
60}
61
80301cdc 62static void wl1251_power_on(struct wl1251 *wl)
2f01a1f5
KV		 63{
64 wl->set_power(true);
65}
66
80301cdc 67static int wl1251_fetch_firmware(struct wl1251 *wl)
2f01a1f5
KV		 68{
69 const struct firmware *fw;
6c766f41 70 struct device *dev = wiphy_dev(wl->hw->wiphy);
2f01a1f5
KV		 71 int ret;
72
0e71bb08 73 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
2f01a1f5
KV		 74
75 if (ret < 0) {
80301cdc 76 wl1251_error("could not get firmware: %d", ret);
2f01a1f5
KV		 77 return ret;
78 }
79
80 if (fw->size % 4) {
80301cdc 81 wl1251_error("firmware size is not multiple of 32 bits: %zu",
2f01a1f5
KV		 82 fw->size);
83 ret = -EILSEQ;
84 goto out;
85 }
86
87 wl->fw_len = fw->size;
c74ddfd5 88 wl->fw = vmalloc(wl->fw_len);
2f01a1f5
KV		 89
90 if (!wl->fw) {
80301cdc 91 wl1251_error("could not allocate memory for the firmware");
2f01a1f5
KV		 92 ret = -ENOMEM;
93 goto out;
94 }
95
96 memcpy(wl->fw, fw->data, wl->fw_len);
97
98 ret = 0;
99
100out:
101 release_firmware(fw);
102
103 return ret;
104}
105
80301cdc 106static int wl1251_fetch_nvs(struct wl1251 *wl)
2f01a1f5
KV		 107{
108 const struct firmware *fw;
6c766f41 109 struct device *dev = wiphy_dev(wl->hw->wiphy);
2f01a1f5
KV		 110 int ret;
111
0e71bb08 112 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
2f01a1f5
KV		 113
114 if (ret < 0) {
80301cdc 115 wl1251_error("could not get nvs file: %d", ret);
2f01a1f5
KV		 116 return ret;
117 }
118
119 if (fw->size % 4) {
80301cdc 120 wl1251_error("nvs size is not multiple of 32 bits: %zu",
2f01a1f5
KV		 121 fw->size);
122 ret = -EILSEQ;
123 goto out;
124 }
125
126 wl->nvs_len = fw->size;
127 wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
128
129 if (!wl->nvs) {
80301cdc 130 wl1251_error("could not allocate memory for the nvs file");
2f01a1f5
KV		 131 ret = -ENOMEM;
132 goto out;
133 }
134
135 memcpy(wl->nvs, fw->data, wl->nvs_len);
136
137 ret = 0;
138
139out:
140 release_firmware(fw);
141
142 return ret;
143}
144
80301cdc 145static void wl1251_fw_wakeup(struct wl1251 *wl)
2f01a1f5
KV		 146{
147 u32 elp_reg;
148
149 elp_reg = ELPCTRL_WAKE_UP;
80301cdc
KV		 150 wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
151 elp_reg = wl1251_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
2f01a1f5 152
05fac682 153 if (!(elp_reg & ELPCTRL_WLAN_READY))
80301cdc 154 wl1251_warning("WLAN not ready");
2f01a1f5
KV		 155}
156
80301cdc 157static int wl1251_chip_wakeup(struct wl1251 *wl)
2f01a1f5
KV		 158{
159 int ret = 0;
160
80301cdc 161 wl1251_power_on(wl);
0e71bb08 162 msleep(WL1251_POWER_ON_SLEEP);
08d9f572 163 wl->if_ops->reset(wl);
2f01a1f5
KV		 164
165 /* We don't need a real memory partition here, because we only want
166 * to use the registers at this point. */
80301cdc 167 wl1251_set_partition(wl,
2f01a1f5
KV		 168 0x00000000,
169 0x00000000,
170 REGISTERS_BASE,
171 REGISTERS_DOWN_SIZE);
172
173 /* ELP module wake up */
80301cdc 174 wl1251_fw_wakeup(wl);
2f01a1f5
KV		 175
176 /* whal_FwCtrl_BootSm() */
177
178 /* 0. read chip id from CHIP_ID */
0e71bb08 179 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
2f01a1f5
KV		 180
181 /* 1. check if chip id is valid */
182
0e71bb08 183 switch (wl->chip_id) {
2f01a1f5 184 case CHIP_ID_1251_PG12:
80301cdc 185 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
0e71bb08 186 wl->chip_id);
2f01a1f5 187 break;
2f01a1f5 188 case CHIP_ID_1251_PG11:
2c759e03
DJW		 189 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
190 wl->chip_id);
191 break;
9a493e8f 192 case CHIP_ID_1251_PG10:
2f01a1f5 193 default:
0e71bb08 194 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
2f01a1f5
KV		 195 ret = -ENODEV;
196 goto out;
197 }
198
199 if (wl->fw == NULL) {
80301cdc 200 ret = wl1251_fetch_firmware(wl);
2f01a1f5
KV		 201 if (ret < 0)
202 goto out;
203 }
204
205 /* No NVS from netlink, try to get it from the filesystem */
206 if (wl->nvs == NULL) {
80301cdc 207 ret = wl1251_fetch_nvs(wl);
2f01a1f5
KV		 208 if (ret < 0)
209 goto out;
210 }
211
212out:
213 return ret;
214}
215
dcea4dbe 216#define WL1251_IRQ_LOOP_COUNT 10
0e71bb08
KV		 217static void wl1251_irq_work(struct work_struct *work)
218{
dcea4dbe 219 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
0e71bb08
KV		 220 struct wl1251 *wl =
221 container_of(work, struct wl1251, irq_work);
222 int ret;
223
224 mutex_lock(&wl->mutex);
225
226 wl1251_debug(DEBUG_IRQ, "IRQ work");
227
228 if (wl->state == WL1251_STATE_OFF)
229 goto out;
230
231 ret = wl1251_ps_elp_wakeup(wl);
232 if (ret < 0)
233 goto out;
234
235 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
236
237 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
238 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
239
dcea4dbe
JY		 240 do {
241 if (wl->data_path) {
242 wl->rx_counter = wl1251_mem_read32(
243 wl, wl->data_path->rx_control_addr);
244
245 /* We handle a frmware bug here */
246 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
247 case 0:
248 wl1251_debug(DEBUG_IRQ,
249 "RX: FW and host in sync");
250 intr &= ~WL1251_ACX_INTR_RX0_DATA;
251 intr &= ~WL1251_ACX_INTR_RX1_DATA;
252 break;
253 case 1:
254 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
255 intr |= WL1251_ACX_INTR_RX0_DATA;
256 intr &= ~WL1251_ACX_INTR_RX1_DATA;
257 break;
258 case 2:
259 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
260 intr |= WL1251_ACX_INTR_RX0_DATA;
261 intr |= WL1251_ACX_INTR_RX1_DATA;
262 break;
263 default:
264 wl1251_warning(
265 "RX: FW and host out of sync: %d",
266 wl->rx_counter - wl->rx_handled);
267 break;
268 }
269
270 wl->rx_handled = wl->rx_counter;
271
272 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
273 wl->rx_counter);
0e71bb08
KV		 274 }
275
dcea4dbe 276 intr &= wl->intr_mask;
0e71bb08 277
dcea4dbe
JY		 278 if (intr == 0) {
279 wl1251_debug(DEBUG_IRQ, "INTR is 0");
280 goto out_sleep;
281 }
0e71bb08 282
dcea4dbe
JY		 283 if (intr & WL1251_ACX_INTR_RX0_DATA) {
284 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
285 wl1251_rx(wl);
286 }
0e71bb08 287
dcea4dbe
JY		 288 if (intr & WL1251_ACX_INTR_RX1_DATA) {
289 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
290 wl1251_rx(wl);
291 }
0e71bb08 292
dcea4dbe
JY		 293 if (intr & WL1251_ACX_INTR_TX_RESULT) {
294 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
295 wl1251_tx_complete(wl);
296 }
0e71bb08 297
dcea4dbe
JY		 298 if (intr & (WL1251_ACX_INTR_EVENT_A |
299 WL1251_ACX_INTR_EVENT_B)) {
300 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)",
301 intr);
302 if (intr & WL1251_ACX_INTR_EVENT_A)
303 wl1251_event_handle(wl, 0);
304 else
305 wl1251_event_handle(wl, 1);
306 }
0e71bb08 307
dcea4dbe
JY		 308 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
309 wl1251_debug(DEBUG_IRQ,
310 "WL1251_ACX_INTR_INIT_COMPLETE");
0e71bb08 311
79553f82
JO		 312 if (--ctr == 0)
313 break;
0e71bb08 314
79553f82
JO		 315 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
316 } while (intr);
0e71bb08
KV		 317
318out_sleep:
dcea4dbe 319 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
0e71bb08
KV		 320 wl1251_ps_elp_sleep(wl);
321
322out:
323 mutex_unlock(&wl->mutex);
324}
325
ae46ae17
KV		 326static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
327 u16 beacon_interval, u8 dtim_period)
328{
329 int ret;
330
331 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
332 DEFAULT_HW_GEN_MODULATION_TYPE,
333 wl->tx_mgmt_frm_rate,
334 wl->tx_mgmt_frm_mod);
335 if (ret < 0)
336 goto out;
337
338
339 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
340 dtim_period);
341 if (ret < 0)
342 goto out;
343
344 /*
345 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
346 * locking we just sleep instead, for now
347 */
348 msleep(10);
349
350out:
351 return ret;
352}
353
80301cdc 354static void wl1251_filter_work(struct work_struct *work)
2f01a1f5 355{
80301cdc
KV		 356 struct wl1251 *wl =
357 container_of(work, struct wl1251, filter_work);
2f01a1f5
KV		 358 int ret;
359
360 mutex_lock(&wl->mutex);
361
80301cdc 362 if (wl->state == WL1251_STATE_OFF)
2f01a1f5
KV		 363 goto out;
364
80301cdc 365 ret = wl1251_ps_elp_wakeup(wl);
c5483b71
KV		 366 if (ret < 0)
367 goto out;
01d9cfbd 368
ae46ae17
KV		 369 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
370 wl->dtim_period);
2f01a1f5 371 if (ret < 0)
c5483b71 372 goto out_sleep;
2f01a1f5 373
c5483b71 374out_sleep:
80301cdc 375 wl1251_ps_elp_sleep(wl);
c5483b71
KV		 376
377out:
2f01a1f5
KV		 378 mutex_unlock(&wl->mutex);
379}
380
80301cdc 381static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2f01a1f5 382{
80301cdc 383 struct wl1251 *wl = hw->priv;
2f01a1f5
KV		 384
385 skb_queue_tail(&wl->tx_queue, skb);
386
9f2ad4fb
JO		 387 /*
388 * The chip specific setup must run before the first TX packet -
389 * before that, the tx_work will not be initialized!
390 */
391
16e711f9 392 ieee80211_queue_work(wl->hw, &wl->tx_work);
2f01a1f5
KV		 393
394 /*
395 * The workqueue is slow to process the tx_queue and we need stop
396 * the queue here, otherwise the queue will get too long.
397 */
80301cdc 398 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
d67e2618 399 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
2f01a1f5
KV		 400 ieee80211_stop_queues(wl->hw);
401
402 /*
403 * FIXME: this is racy, the variable is not properly
404 * protected. Maybe fix this by removing the stupid
405 * variable altogether and checking the real queue state?
406 */
407 wl->tx_queue_stopped = true;
408 }
409
410 return NETDEV_TX_OK;
411}
412
80301cdc 413static int wl1251_op_start(struct ieee80211_hw *hw)
2f01a1f5 414{
80301cdc 415 struct wl1251 *wl = hw->priv;
2f01a1f5
KV		 416 int ret = 0;
417
80301cdc 418 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
2f01a1f5
KV		 419
420 mutex_lock(&wl->mutex);
421
80301cdc
KV		 422 if (wl->state != WL1251_STATE_OFF) {
423 wl1251_error("cannot start because not in off state: %d",
2f01a1f5
KV		 424 wl->state);
425 ret = -EBUSY;
426 goto out;
427 }
428
80301cdc 429 ret = wl1251_chip_wakeup(wl);
2f01a1f5 430 if (ret < 0)
fe643414 431 goto out;
2f01a1f5 432
0e71bb08 433 ret = wl1251_boot(wl);
2f01a1f5
KV		 434 if (ret < 0)
435 goto out;
436
0e71bb08 437 ret = wl1251_hw_init(wl);
2f01a1f5
KV		 438 if (ret < 0)
439 goto out;
440
80301cdc 441 ret = wl1251_acx_station_id(wl);
2f01a1f5
KV		 442 if (ret < 0)
443 goto out;
444
80301cdc 445 wl->state = WL1251_STATE_ON;
2f01a1f5 446
0e71bb08 447 wl1251_info("firmware booted (%s)", wl->fw_ver);
2f01a1f5
KV		 448
449out:
450 if (ret < 0)
80301cdc 451 wl1251_power_off(wl);
2f01a1f5
KV		 452
453 mutex_unlock(&wl->mutex);
454
455 return ret;
456}
457
80301cdc 458static void wl1251_op_stop(struct ieee80211_hw *hw)
2f01a1f5 459{
80301cdc 460 struct wl1251 *wl = hw->priv;
2f01a1f5 461
80301cdc 462 wl1251_info("down");
2f01a1f5 463
80301cdc 464 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
2f01a1f5
KV		 465
466 mutex_lock(&wl->mutex);
467
80301cdc 468 WARN_ON(wl->state != WL1251_STATE_ON);
2f01a1f5
KV		 469
470 if (wl->scanning) {
471 mutex_unlock(&wl->mutex);
472 ieee80211_scan_completed(wl->hw, true);
473 mutex_lock(&wl->mutex);
474 wl->scanning = false;
475 }
476
80301cdc 477 wl->state = WL1251_STATE_OFF;
2f01a1f5 478
80301cdc 479 wl1251_disable_interrupts(wl);
2f01a1f5
KV		 480
481 mutex_unlock(&wl->mutex);
482
483 cancel_work_sync(&wl->irq_work);
484 cancel_work_sync(&wl->tx_work);
485 cancel_work_sync(&wl->filter_work);
486
487 mutex_lock(&wl->mutex);
488
489 /* let's notify MAC80211 about the remaining pending TX frames */
0e71bb08 490 wl1251_tx_flush(wl);
80301cdc 491 wl1251_power_off(wl);
2f01a1f5
KV		 492
493 memset(wl->bssid, 0, ETH_ALEN);
494 wl->listen_int = 1;
495 wl->bss_type = MAX_BSS_TYPE;
496
497 wl->data_in_count = 0;
498 wl->rx_counter = 0;
499 wl->rx_handled = 0;
500 wl->rx_current_buffer = 0;
501 wl->rx_last_id = 0;
502 wl->next_tx_complete = 0;
503 wl->elp = false;
504 wl->psm = 0;
505 wl->tx_queue_stopped = false;
80301cdc 506 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
9780279c 507 wl->channel = WL1251_DEFAULT_CHANNEL;
2f01a1f5 508
80301cdc 509 wl1251_debugfs_reset(wl);
2f01a1f5
KV		 510
511 mutex_unlock(&wl->mutex);
512}
513
80301cdc 514static int wl1251_op_add_interface(struct ieee80211_hw *hw,
1ed32e4f 515 struct ieee80211_vif *vif)
2f01a1f5 516{
80301cdc 517 struct wl1251 *wl = hw->priv;
2f01a1f5
KV		 518 int ret = 0;
519
e91d8334 520 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
1ed32e4f 521 vif->type, vif->addr);
2f01a1f5
KV		 522
523 mutex_lock(&wl->mutex);
287f6f96
JO		 524 if (wl->vif) {
525 ret = -EBUSY;
526 goto out;
527 }
528
1ed32e4f 529 wl->vif = vif;
2f01a1f5 530
1ed32e4f 531 switch (vif->type) {
2f01a1f5
KV		 532 case NL80211_IFTYPE_STATION:
533 wl->bss_type = BSS_TYPE_STA_BSS;
534 break;
535 case NL80211_IFTYPE_ADHOC:
536 wl->bss_type = BSS_TYPE_IBSS;
537 break;
538 default:
539 ret = -EOPNOTSUPP;
540 goto out;
541 }
542
1ed32e4f
JB		 543 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
544 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
2f01a1f5 545 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
80301cdc 546 ret = wl1251_acx_station_id(wl);
2f01a1f5
KV		 547 if (ret < 0)
548 goto out;
549 }
550
551out:
552 mutex_unlock(&wl->mutex);
553 return ret;
554}
555
80301cdc 556static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
1ed32e4f 557 struct ieee80211_vif *vif)
2f01a1f5 558{
287f6f96
JO		 559 struct wl1251 *wl = hw->priv;
560
561 mutex_lock(&wl->mutex);
80301cdc 562 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
287f6f96
JO		 563 wl->vif = NULL;
564 mutex_unlock(&wl->mutex);
2f01a1f5
KV		 565}
566
8f8ff916
KV		 567static int wl1251_build_qos_null_data(struct wl1251 *wl)
568{
569 struct ieee80211_qos_hdr template;
570
571 memset(&template, 0, sizeof(template));
572
573 memcpy(template.addr1, wl->bssid, ETH_ALEN);
574 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
575 memcpy(template.addr3, wl->bssid, ETH_ALEN);
576
577 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
578 IEEE80211_STYPE_QOS_NULLFUNC |
579 IEEE80211_FCTL_TODS);
580
581 /* FIXME: not sure what priority to use here */
582 template.qos_ctrl = cpu_to_le16(0);
583
584 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
585 sizeof(template));
586}
587
80301cdc 588static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
2f01a1f5 589{
80301cdc 590 struct wl1251 *wl = hw->priv;
2f01a1f5
KV		 591 struct ieee80211_conf *conf = &hw->conf;
592 int channel, ret = 0;
593
594 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
595
80301cdc 596 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
2f01a1f5
KV		 597 channel,
598 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
599 conf->power_level);
600
601 mutex_lock(&wl->mutex);
602
80301cdc 603 ret = wl1251_ps_elp_wakeup(wl);
c5483b71
KV		 604 if (ret < 0)
605 goto out;
01d9cfbd 606
2f01a1f5 607 if (channel != wl->channel) {
fe9a9846
KV		 608 wl->channel = channel;
609
ae46ae17
KV		 610 ret = wl1251_join(wl, wl->bss_type, wl->channel,
611 wl->beacon_int, wl->dtim_period);
2f01a1f5 612 if (ret < 0)
c5483b71 613 goto out_sleep;
2f01a1f5
KV		 614 }
615
2f01a1f5 616 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
47af3fe3 617 wl1251_debug(DEBUG_PSM, "psm enabled");
2f01a1f5
KV		 618
619 wl->psm_requested = true;
620
56007a02
JB		 621 wl->dtim_period = conf->ps_dtim_period;
622
623 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
624 wl->dtim_period);
625
2f01a1f5 626 /*
56007a02 627 * mac80211 enables PSM only if we're already associated.
2f01a1f5 628 */
80301cdc 629 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
478fdf2b
KV		 630 if (ret < 0)
631 goto out_sleep;
2f01a1f5
KV		 632 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
633 wl->psm_requested) {
47af3fe3 634 wl1251_debug(DEBUG_PSM, "psm disabled");
2f01a1f5
KV		 635
636 wl->psm_requested = false;
637
478fdf2b 638 if (wl->psm) {
80301cdc 639 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
478fdf2b
KV		 640 if (ret < 0)
641 goto out_sleep;
642 }
2f01a1f5
KV		 643 }
644
645 if (conf->power_level != wl->power_level) {
80301cdc 646 ret = wl1251_acx_tx_power(wl, conf->power_level);
2f01a1f5 647 if (ret < 0)
478fdf2b 648 goto out_sleep;
2f01a1f5
KV		 649
650 wl->power_level = conf->power_level;
651 }
652
c5483b71 653out_sleep:
80301cdc 654 wl1251_ps_elp_sleep(wl);
c5483b71
KV		 655
656out:
2f01a1f5 657 mutex_unlock(&wl->mutex);
c5483b71 658
2f01a1f5
KV		 659 return ret;
660}
661
80301cdc 662#define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
2f01a1f5
KV		 663 FIF_ALLMULTI | \
664 FIF_FCSFAIL | \
665 FIF_BCN_PRBRESP_PROMISC | \
666 FIF_CONTROL | \
667 FIF_OTHER_BSS)
668
80301cdc 669static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
2f01a1f5 670 unsigned int changed,
3ac64bee 671 unsigned int *total,u64 multicast)
2f01a1f5 672{
80301cdc 673 struct wl1251 *wl = hw->priv;
2f01a1f5 674
80301cdc 675 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
2f01a1f5 676
80301cdc
KV		 677 *total &= WL1251_SUPPORTED_FILTERS;
678 changed &= WL1251_SUPPORTED_FILTERS;
2f01a1f5
KV		 679
680 if (changed == 0)
681 /* no filters which we support changed */
682 return;
683
684 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
685
80301cdc
KV		 686 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
687 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
2f01a1f5
KV		 688
689 if (*total & FIF_PROMISC_IN_BSS) {
690 wl->rx_config |= CFG_BSSID_FILTER_EN;
691 wl->rx_config |= CFG_RX_ALL_GOOD;
692 }
693 if (*total & FIF_ALLMULTI)
694 /*
695 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
696 * all multicast frames
697 */
698 wl->rx_config &= ~CFG_MC_FILTER_EN;
699 if (*total & FIF_FCSFAIL)
700 wl->rx_filter |= CFG_RX_FCS_ERROR;
701 if (*total & FIF_BCN_PRBRESP_PROMISC) {
702 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
703 wl->rx_config &= ~CFG_SSID_FILTER_EN;
704 }
705 if (*total & FIF_CONTROL)
706 wl->rx_filter |= CFG_RX_CTL_EN;
707 if (*total & FIF_OTHER_BSS)
708 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
709
710 /*
711 * FIXME: workqueues need to be properly cancelled on stop(), for
712 * now let's just disable changing the filter settings. They will
713 * be updated any on config().
714 */
715 /* schedule_work(&wl->filter_work); */
716}
717
718/* HW encryption */
80301cdc
KV		 719static int wl1251_set_key_type(struct wl1251 *wl,
720 struct wl1251_cmd_set_keys *key,
2f01a1f5
KV		 721 enum set_key_cmd cmd,
722 struct ieee80211_key_conf *mac80211_key,
723 const u8 *addr)
724{
725 switch (mac80211_key->alg) {
726 case ALG_WEP:
727 if (is_broadcast_ether_addr(addr))
728 key->key_type = KEY_WEP_DEFAULT;
729 else
730 key->key_type = KEY_WEP_ADDR;
731
732 mac80211_key->hw_key_idx = mac80211_key->keyidx;
733 break;
734 case ALG_TKIP:
735 if (is_broadcast_ether_addr(addr))
736 key->key_type = KEY_TKIP_MIC_GROUP;
737 else
738 key->key_type = KEY_TKIP_MIC_PAIRWISE;
739
740 mac80211_key->hw_key_idx = mac80211_key->keyidx;
741 break;
742 case ALG_CCMP:
743 if (is_broadcast_ether_addr(addr))
744 key->key_type = KEY_AES_GROUP;
745 else
746 key->key_type = KEY_AES_PAIRWISE;
747 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
748 break;
749 default:
80301cdc 750 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
2f01a1f5
KV		 751 return -EOPNOTSUPP;
752 }
753
754 return 0;
755}
756
80301cdc 757static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2f01a1f5
KV		 758 struct ieee80211_vif *vif,
759 struct ieee80211_sta *sta,
760 struct ieee80211_key_conf *key)
761{
80301cdc
KV		 762 struct wl1251 *wl = hw->priv;
763 struct wl1251_cmd_set_keys *wl_cmd;
2f01a1f5
KV		 764 const u8 *addr;
765 int ret;
766
767 static const u8 bcast_addr[ETH_ALEN] =
768 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
769
80301cdc 770 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
2f01a1f5 771
ff25839b
KV		 772 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
773 if (!wl_cmd) {
774 ret = -ENOMEM;
775 goto out;
776 }
2f01a1f5
KV		 777
778 addr = sta ? sta->addr : bcast_addr;
779
80301cdc
KV		 780 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
781 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
782 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
2f01a1f5 783 key->alg, key->keyidx, key->keylen, key->flags);
80301cdc 784 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
2f01a1f5 785
ff25839b
KV		 786 if (is_zero_ether_addr(addr)) {
787 /* We dont support TX only encryption */
788 ret = -EOPNOTSUPP;
789 goto out;
790 }
791
2f01a1f5
KV		 792 mutex_lock(&wl->mutex);
793
80301cdc 794 ret = wl1251_ps_elp_wakeup(wl);
c5483b71
KV		 795 if (ret < 0)
796 goto out_unlock;
01d9cfbd 797
2f01a1f5
KV		 798 switch (cmd) {
799 case SET_KEY:
ff25839b 800 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
2f01a1f5
KV		 801 break;
802 case DISABLE_KEY:
ff25839b 803 wl_cmd->key_action = KEY_REMOVE;
2f01a1f5
KV		 804 break;
805 default:
80301cdc 806 wl1251_error("Unsupported key cmd 0x%x", cmd);
2f01a1f5
KV		 807 break;
808 }
809
80301cdc 810 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
2f01a1f5 811 if (ret < 0) {
80301cdc 812 wl1251_error("Set KEY type failed");
c5483b71 813 goto out_sleep;
2f01a1f5
KV		 814 }
815
ff25839b
KV		 816 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
817 memcpy(wl_cmd->addr, addr, ETH_ALEN);
2f01a1f5 818
ff25839b
KV		 819 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
820 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
2f01a1f5
KV		 821 /*
822 * We get the key in the following form:
823 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
824 * but the target is expecting:
825 * TKIP - RX MIC - TX MIC
826 */
ff25839b
KV		 827 memcpy(wl_cmd->key, key->key, 16);
828 memcpy(wl_cmd->key + 16, key->key + 24, 8);
829 memcpy(wl_cmd->key + 24, key->key + 16, 8);
2f01a1f5
KV		 830
831 } else {
ff25839b 832 memcpy(wl_cmd->key, key->key, key->keylen);
2f01a1f5 833 }
ff25839b 834 wl_cmd->key_size = key->keylen;
2f01a1f5 835
ff25839b
KV		 836 wl_cmd->id = key->keyidx;
837 wl_cmd->ssid_profile = 0;
2f01a1f5 838
80301cdc 839 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
2f01a1f5 840
80301cdc 841 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
ff25839b 842 if (ret < 0) {
80301cdc 843 wl1251_warning("could not set keys");
c5483b71 844 goto out_sleep;
2f01a1f5
KV		 845 }
846
c5483b71 847out_sleep:
80301cdc 848 wl1251_ps_elp_sleep(wl);
c5483b71
KV		 849
850out_unlock:
2f01a1f5 851 mutex_unlock(&wl->mutex);
ff25839b
KV		 852
853out:
854 kfree(wl_cmd);
855
2f01a1f5
KV		 856 return ret;
857}
858
80301cdc 859static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
2f01a1f5
KV		 860 struct cfg80211_scan_request *req)
861{
80301cdc 862 struct wl1251 *wl = hw->priv;
e477c56e 863 struct sk_buff *skb;
2f01a1f5 864 size_t ssid_len = 0;
3a98c30f
KV		 865 u8 *ssid = NULL;
866 int ret;
2f01a1f5 867
80301cdc 868 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
2f01a1f5
KV		 869
870 if (req->n_ssids) {
871 ssid = req->ssids[0].ssid;
872 ssid_len = req->ssids[0].ssid_len;
873 }
874
875 mutex_lock(&wl->mutex);
c5483b71 876
3a98c30f
KV		 877 if (wl->scanning) {
878 wl1251_debug(DEBUG_SCAN, "scan already in progress");
879 ret = -EINVAL;
880 goto out;
881 }
882
80301cdc 883 ret = wl1251_ps_elp_wakeup(wl);
c5483b71
KV		 884 if (ret < 0)
885 goto out;
01d9cfbd 886
e477c56e
KV		 887 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
888 req->ie, req->ie_len);
889 if (!skb) {
890 ret = -ENOMEM;
891 goto out;
892 }
893
894 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
895 skb->len);
896 dev_kfree_skb(skb);
3a98c30f 897 if (ret < 0)
e477c56e 898 goto out_sleep;
3a98c30f
KV		 899
900 ret = wl1251_cmd_trigger_scan_to(wl, 0);
901 if (ret < 0)
902 goto out_sleep;
903
904 wl->scanning = true;
01d9cfbd 905
dc52f0a8
KV		 906 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
907 req->n_channels, WL1251_SCAN_NUM_PROBES);
3a98c30f
KV		 908 if (ret < 0) {
909 wl->scanning = false;
910 goto out_sleep;
911 }
912
913out_sleep:
80301cdc 914 wl1251_ps_elp_sleep(wl);
c5483b71
KV		 915
916out:
2f01a1f5
KV		 917 mutex_unlock(&wl->mutex);
918
919 return ret;
920}
921
80301cdc 922static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2f01a1f5 923{
80301cdc 924 struct wl1251 *wl = hw->priv;
2f01a1f5
KV		 925 int ret;
926
cee4fd27
KV		 927 mutex_lock(&wl->mutex);
928
80301cdc 929 ret = wl1251_ps_elp_wakeup(wl);
c5483b71
KV		 930 if (ret < 0)
931 goto out;
01d9cfbd 932
80301cdc 933 ret = wl1251_acx_rts_threshold(wl, (u16) value);
2f01a1f5 934 if (ret < 0)
80301cdc 935 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
2f01a1f5 936
80301cdc 937 wl1251_ps_elp_sleep(wl);
01d9cfbd 938
c5483b71 939out:
cee4fd27
KV		 940 mutex_unlock(&wl->mutex);
941
2f01a1f5
KV		 942 return ret;
943}
944
80301cdc 945static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
2f01a1f5
KV		 946 struct ieee80211_vif *vif,
947 struct ieee80211_bss_conf *bss_conf,
948 u32 changed)
949{
80301cdc 950 struct wl1251 *wl = hw->priv;
f7f70579 951 struct sk_buff *beacon, *skb;
2f01a1f5
KV		 952 int ret;
953
80301cdc 954 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
2f01a1f5
KV		 955
956 mutex_lock(&wl->mutex);
957
80301cdc 958 ret = wl1251_ps_elp_wakeup(wl);
c5483b71
KV		 959 if (ret < 0)
960 goto out;
01d9cfbd 961
de8df1ea
KV		 962 if (changed & BSS_CHANGED_BSSID) {
963 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
964
f7f70579
KV		 965 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
966 if (!skb)
967 goto out_sleep;
968
969 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
970 skb->data, skb->len);
971 dev_kfree_skb(skb);
de8df1ea 972 if (ret < 0)
80a112ff 973 goto out_sleep;
de8df1ea 974
8f8ff916
KV		 975 ret = wl1251_build_qos_null_data(wl);
976 if (ret < 0)
977 goto out;
978
de8df1ea
KV		 979 if (wl->bss_type != BSS_TYPE_IBSS) {
980 ret = wl1251_join(wl, wl->bss_type, wl->channel,
981 wl->beacon_int, wl->dtim_period);
982 if (ret < 0)
983 goto out_sleep;
984 }
985 }
986
2f01a1f5
KV		 987 if (changed & BSS_CHANGED_ASSOC) {
988 if (bss_conf->assoc) {
e2fd4611 989 wl->beacon_int = bss_conf->beacon_int;
2f01a1f5 990
f7f70579
KV		 991 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
992 if (!skb)
993 goto out_sleep;
994
995 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
996 skb->data,
997 skb->len);
998 dev_kfree_skb(skb);
2f01a1f5 999 if (ret < 0)
c5483b71 1000 goto out_sleep;
2f01a1f5 1001
56007a02 1002 ret = wl1251_acx_aid(wl, bss_conf->aid);
2f01a1f5 1003 if (ret < 0)
c5483b71 1004 goto out_sleep;
e2fd4611
KV		 1005 } else {
1006 /* use defaults when not associated */
1007 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1008 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
2f01a1f5
KV		 1009 }
1010 }
1011 if (changed & BSS_CHANGED_ERP_SLOT) {
1012 if (bss_conf->use_short_slot)
80301cdc 1013 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
2f01a1f5 1014 else
80301cdc 1015 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
2f01a1f5 1016 if (ret < 0) {
80301cdc 1017 wl1251_warning("Set slot time failed %d", ret);
c5483b71 1018 goto out_sleep;
2f01a1f5
KV		 1019 }
1020 }
1021
1022 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1023 if (bss_conf->use_short_preamble)
80301cdc 1024 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
2f01a1f5 1025 else
80301cdc 1026 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
2f01a1f5
KV		 1027 }
1028
1029 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1030 if (bss_conf->use_cts_prot)
80301cdc 1031 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
2f01a1f5 1032 else
80301cdc 1033 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
2f01a1f5 1034 if (ret < 0) {
80301cdc 1035 wl1251_warning("Set ctsprotect failed %d", ret);
80a112ff 1036 goto out_sleep;
2f01a1f5
KV		 1037 }
1038 }
1039
2f01a1f5
KV		 1040 if (changed & BSS_CHANGED_BEACON) {
1041 beacon = ieee80211_beacon_get(hw, vif);
80301cdc 1042 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
2f01a1f5
KV		 1043 beacon->len);
1044
1045 if (ret < 0) {
1046 dev_kfree_skb(beacon);
80a112ff 1047 goto out_sleep;
2f01a1f5
KV		 1048 }
1049
80301cdc 1050 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
2f01a1f5
KV		 1051 beacon->len);
1052
1053 dev_kfree_skb(beacon);
1054
1055 if (ret < 0)
80a112ff 1056 goto out_sleep;
2f01a1f5 1057
ae46ae17
KV		 1058 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1059 wl->channel, wl->dtim_period);
2f01a1f5
KV		 1060
1061 if (ret < 0)
80a112ff 1062 goto out_sleep;
2f01a1f5
KV		 1063 }
1064
c5483b71 1065out_sleep:
80301cdc 1066 wl1251_ps_elp_sleep(wl);
c5483b71
KV		 1067
1068out:
2f01a1f5
KV		 1069 mutex_unlock(&wl->mutex);
1070}
1071
1072
1073/* can't be const, mac80211 writes to this */
80301cdc 1074static struct ieee80211_rate wl1251_rates[] = {
2f01a1f5
KV		 1075 { .bitrate = 10,
1076 .hw_value = 0x1,
1077 .hw_value_short = 0x1, },
1078 { .bitrate = 20,
1079 .hw_value = 0x2,
1080 .hw_value_short = 0x2,
1081 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1082 { .bitrate = 55,
1083 .hw_value = 0x4,
1084 .hw_value_short = 0x4,
1085 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1086 { .bitrate = 110,
1087 .hw_value = 0x20,
1088 .hw_value_short = 0x20,
1089 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1090 { .bitrate = 60,
1091 .hw_value = 0x8,
1092 .hw_value_short = 0x8, },
1093 { .bitrate = 90,
1094 .hw_value = 0x10,
1095 .hw_value_short = 0x10, },
1096 { .bitrate = 120,
1097 .hw_value = 0x40,
1098 .hw_value_short = 0x40, },
1099 { .bitrate = 180,
1100 .hw_value = 0x80,
1101 .hw_value_short = 0x80, },
1102 { .bitrate = 240,
1103 .hw_value = 0x200,
1104 .hw_value_short = 0x200, },
1105 { .bitrate = 360,
1106 .hw_value = 0x400,
1107 .hw_value_short = 0x400, },
1108 { .bitrate = 480,
1109 .hw_value = 0x800,
1110 .hw_value_short = 0x800, },
1111 { .bitrate = 540,
1112 .hw_value = 0x1000,
1113 .hw_value_short = 0x1000, },
1114};
1115
1116/* can't be const, mac80211 writes to this */
80301cdc 1117static struct ieee80211_channel wl1251_channels[] = {
2f01a1f5
KV		 1118 { .hw_value = 1, .center_freq = 2412},
1119 { .hw_value = 2, .center_freq = 2417},
1120 { .hw_value = 3, .center_freq = 2422},
1121 { .hw_value = 4, .center_freq = 2427},
1122 { .hw_value = 5, .center_freq = 2432},
1123 { .hw_value = 6, .center_freq = 2437},
1124 { .hw_value = 7, .center_freq = 2442},
1125 { .hw_value = 8, .center_freq = 2447},
1126 { .hw_value = 9, .center_freq = 2452},
1127 { .hw_value = 10, .center_freq = 2457},
1128 { .hw_value = 11, .center_freq = 2462},
1129 { .hw_value = 12, .center_freq = 2467},
1130 { .hw_value = 13, .center_freq = 2472},
1131};
1132
86dff7a7
KV		 1133static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1134 const struct ieee80211_tx_queue_params *params)
1135{
4ff6ffa1 1136 enum wl1251_acx_ps_scheme ps_scheme;
86dff7a7
KV		 1137 struct wl1251 *wl = hw->priv;
1138 int ret;
1139
1140 mutex_lock(&wl->mutex);
1141
1142 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1143
1144 ret = wl1251_ps_elp_wakeup(wl);
1145 if (ret < 0)
1146 goto out;
1147
85359499 1148 /* mac80211 uses units of 32 usec */
86dff7a7
KV		 1149 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1150 params->cw_min, params->cw_max,
85359499 1151 params->aifs, params->txop * 32);
27336f1c
KV		 1152 if (ret < 0)
1153 goto out_sleep;
1154
4ff6ffa1
KV		 1155 if (params->uapsd)
1156 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1157 else
1158 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1159
27336f1c 1160 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
49e1b9fa 1161 CHANNEL_TYPE_EDCF,
4ff6ffa1 1162 wl1251_tx_get_queue(queue), ps_scheme,
27336f1c
KV		 1163 WL1251_ACX_ACK_POLICY_LEGACY);
1164 if (ret < 0)
1165 goto out_sleep;
86dff7a7 1166
27336f1c 1167out_sleep:
86dff7a7
KV		 1168 wl1251_ps_elp_sleep(wl);
1169
1170out:
1171 mutex_unlock(&wl->mutex);
1172
1173 return ret;
1174}
1175
2f01a1f5 1176/* can't be const, mac80211 writes to this */
80301cdc
KV		 1177static struct ieee80211_supported_band wl1251_band_2ghz = {
1178 .channels = wl1251_channels,
1179 .n_channels = ARRAY_SIZE(wl1251_channels),
1180 .bitrates = wl1251_rates,
1181 .n_bitrates = ARRAY_SIZE(wl1251_rates),
2f01a1f5
KV		 1182};
1183
80301cdc
KV		 1184static const struct ieee80211_ops wl1251_ops = {
1185 .start = wl1251_op_start,
1186 .stop = wl1251_op_stop,
1187 .add_interface = wl1251_op_add_interface,
1188 .remove_interface = wl1251_op_remove_interface,
1189 .config = wl1251_op_config,
1190 .configure_filter = wl1251_op_configure_filter,
1191 .tx = wl1251_op_tx,
1192 .set_key = wl1251_op_set_key,
1193 .hw_scan = wl1251_op_hw_scan,
1194 .bss_info_changed = wl1251_op_bss_info_changed,
1195 .set_rts_threshold = wl1251_op_set_rts_threshold,
86dff7a7 1196 .conf_tx = wl1251_op_conf_tx,
2f01a1f5
KV		 1197};
1198
80301cdc 1199static int wl1251_register_hw(struct wl1251 *wl)
2f01a1f5
KV		 1200{
1201 int ret;
1202
1203 if (wl->mac80211_registered)
1204 return 0;
1205
1206 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1207
1208 ret = ieee80211_register_hw(wl->hw);
1209 if (ret < 0) {
80301cdc 1210 wl1251_error("unable to register mac80211 hw: %d", ret);
2f01a1f5
KV		 1211 return ret;
1212 }
1213
1214 wl->mac80211_registered = true;
1215
80301cdc 1216 wl1251_notice("loaded");
2f01a1f5
KV		 1217
1218 return 0;
1219}
1220
8e639c06 1221int wl1251_init_ieee80211(struct wl1251 *wl)
2f01a1f5 1222{
8e639c06
BC		 1223 int ret;
1224
2f01a1f5
KV		 1225 /* The tx descriptor buffer and the TKIP space */
1226 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
9f2ad4fb 1227 + WL1251_TKIP_IV_SPACE;
2f01a1f5
KV		 1228
1229 /* unit us */
1230 /* FIXME: find a proper value */
1231 wl->hw->channel_change_time = 10000;
1232
1233 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
8c8746f9 1234 IEEE80211_HW_NOISE_DBM |
6b21a2cd 1235 IEEE80211_HW_SUPPORTS_PS |
4ff6ffa1
KV		 1236 IEEE80211_HW_BEACON_FILTER |
1237 IEEE80211_HW_SUPPORTS_UAPSD;
2f01a1f5
KV		 1238
1239 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1240 wl->hw->wiphy->max_scan_ssids = 1;
80301cdc 1241 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
2f01a1f5 1242
da2fb4e9
KV		 1243 wl->hw->queues = 4;
1244
8e639c06
BC		 1245 ret = wl1251_register_hw(wl);
1246 if (ret)
1247 goto out;
2f01a1f5 1248
8e639c06
BC		 1249 wl1251_debugfs_init(wl);
1250 wl1251_notice("initialized");
2f01a1f5 1251
8e639c06
BC		 1252 ret = 0;
1253
1254out:
1255 return ret;
1256}
af8c78eb 1257EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
08d9f572 1258
8e639c06 1259struct ieee80211_hw *wl1251_alloc_hw(void)
2f01a1f5 1260{
2f01a1f5 1261 struct ieee80211_hw *hw;
80301cdc 1262 struct wl1251 *wl;
8e639c06 1263 int i;
2f01a1f5
KV		 1264 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1265
80301cdc 1266 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
2f01a1f5 1267 if (!hw) {
80301cdc 1268 wl1251_error("could not alloc ieee80211_hw");
8e639c06 1269 return ERR_PTR(-ENOMEM);
2f01a1f5
KV		 1270 }
1271
1272 wl = hw->priv;
1273 memset(wl, 0, sizeof(*wl));
1274
1275 wl->hw = hw;
2f01a1f5
KV		 1276
1277 wl->data_in_count = 0;
1278
1279 skb_queue_head_init(&wl->tx_queue);
1280
80301cdc 1281 INIT_WORK(&wl->filter_work, wl1251_filter_work);
d5da79ac 1282 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
80301cdc 1283 wl->channel = WL1251_DEFAULT_CHANNEL;
2f01a1f5
KV		 1284 wl->scanning = false;
1285 wl->default_key = 0;
1286 wl->listen_int = 1;
1287 wl->rx_counter = 0;
1288 wl->rx_handled = 0;
1289 wl->rx_current_buffer = 0;
1290 wl->rx_last_id = 0;
80301cdc
KV		 1291 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1292 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
2f01a1f5
KV		 1293 wl->elp = false;
1294 wl->psm = 0;
1295 wl->psm_requested = false;
1296 wl->tx_queue_stopped = false;
80301cdc 1297 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
e2fd4611
KV		 1298 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1299 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
287f6f96 1300 wl->vif = NULL;
2f01a1f5 1301
2f01a1f5
KV		 1302 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1303 wl->tx_frames[i] = NULL;
1304
1305 wl->next_tx_complete = 0;
1306
0e71bb08
KV		 1307 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1308 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1309
2f01a1f5
KV		 1310 /*
1311 * In case our MAC address is not correctly set,
1312 * we use a random but Nokia MAC.
1313 */
1314 memcpy(wl->mac_addr, nokia_oui, 3);
1315 get_random_bytes(wl->mac_addr + 3, 3);
1316
80301cdc 1317 wl->state = WL1251_STATE_OFF;
2f01a1f5
KV		 1318 mutex_init(&wl->mutex);
1319
1320 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1321 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1322
4721213f
KV		 1323 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1324 if (!wl->rx_descriptor) {
80301cdc 1325 wl1251_error("could not allocate memory for rx descriptor");
8e639c06
BC		 1326 ieee80211_free_hw(hw);
1327 return ERR_PTR(-ENOMEM);
4721213f
KV		 1328 }
1329
8e639c06 1330 return hw;
2f01a1f5 1331}
af8c78eb 1332EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
2f01a1f5 1333
8e639c06 1334int wl1251_free_hw(struct wl1251 *wl)
2f01a1f5 1335{
2f01a1f5
KV		 1336 ieee80211_unregister_hw(wl->hw);
1337
80301cdc 1338 wl1251_debugfs_exit(wl);
2f01a1f5 1339
2f01a1f5
KV		 1340 kfree(wl->target_mem_map);
1341 kfree(wl->data_path);
c74ddfd5 1342 vfree(wl->fw);
2f01a1f5
KV		 1343 wl->fw = NULL;
1344 kfree(wl->nvs);
1345 wl->nvs = NULL;
4721213f
KV		 1346
1347 kfree(wl->rx_descriptor);
1348 wl->rx_descriptor = NULL;
1349
2f01a1f5
KV		 1350 ieee80211_free_hw(wl->hw);
1351
1352 return 0;
1353}
af8c78eb
BC		 1354EXPORT_SYMBOL_GPL(wl1251_free_hw);
1355
1356MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1357MODULE_LICENSE("GPL");
b1b0a2b8 1358MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
40f54242 1359MODULE_ALIAS("spi:wl1251");
49f146de 1360MODULE_FIRMWARE(WL1251_FW_NAME);
Linux 6.x block layer and io_uring tree(s)