main.c 32 KB

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  1. /*
  2. * This file is part of wl1251
  3. *
  4. * Copyright (C) 2008-2009 Nokia Corporation
  5. *
  6. * This program is free software; you can redistribute it and/or
  7. * modify it under the terms of the GNU General Public License
  8. * version 2 as published by the Free Software Foundation.
  9. *
  10. * This program is distributed in the hope that it will be useful, but
  11. * WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13. * General Public License for more details.
  14. *
  15. * You should have received a copy of the GNU General Public License
  16. * along with this program; if not, write to the Free Software
  17. * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18. * 02110-1301 USA
  19. *
  20. */
  21. #include <linux/module.h>
  22. #include <linux/interrupt.h>
  23. #include <linux/firmware.h>
  24. #include <linux/delay.h>
  25. #include <linux/irq.h>
  26. #include <linux/crc32.h>
  27. #include <linux/etherdevice.h>
  28. #include <linux/vmalloc.h>
  29. #include <linux/slab.h>
  30. #include "wl1251.h"
  31. #include "wl12xx_80211.h"
  32. #include "reg.h"
  33. #include "io.h"
  34. #include "cmd.h"
  35. #include "event.h"
  36. #include "tx.h"
  37. #include "rx.h"
  38. #include "ps.h"
  39. #include "init.h"
  40. #include "debugfs.h"
  41. #include "boot.h"
  42. void wl1251_enable_interrupts(struct wl1251 *wl)
  43. {
  44. wl->if_ops->enable_irq(wl);
  45. }
  46. void wl1251_disable_interrupts(struct wl1251 *wl)
  47. {
  48. wl->if_ops->disable_irq(wl);
  49. }
  50. static int wl1251_power_off(struct wl1251 *wl)
  51. {
  52. return wl->if_ops->power(wl, false);
  53. }
  54. static int wl1251_power_on(struct wl1251 *wl)
  55. {
  56. return wl->if_ops->power(wl, true);
  57. }
  58. static int wl1251_fetch_firmware(struct wl1251 *wl)
  59. {
  60. const struct firmware *fw;
  61. struct device *dev = wiphy_dev(wl->hw->wiphy);
  62. int ret;
  63. ret = request_firmware(&fw, WL1251_FW_NAME, dev);
  64. if (ret < 0) {
  65. wl1251_error("could not get firmware: %d", ret);
  66. return ret;
  67. }
  68. if (fw->size % 4) {
  69. wl1251_error("firmware size is not multiple of 32 bits: %zu",
  70. fw->size);
  71. ret = -EILSEQ;
  72. goto out;
  73. }
  74. wl->fw_len = fw->size;
  75. wl->fw = vmalloc(wl->fw_len);
  76. if (!wl->fw) {
  77. wl1251_error("could not allocate memory for the firmware");
  78. ret = -ENOMEM;
  79. goto out;
  80. }
  81. memcpy(wl->fw, fw->data, wl->fw_len);
  82. ret = 0;
  83. out:
  84. release_firmware(fw);
  85. return ret;
  86. }
  87. static int wl1251_fetch_nvs(struct wl1251 *wl)
  88. {
  89. const struct firmware *fw;
  90. struct device *dev = wiphy_dev(wl->hw->wiphy);
  91. int ret;
  92. ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
  93. if (ret < 0) {
  94. wl1251_error("could not get nvs file: %d", ret);
  95. return ret;
  96. }
  97. if (fw->size % 4) {
  98. wl1251_error("nvs size is not multiple of 32 bits: %zu",
  99. fw->size);
  100. ret = -EILSEQ;
  101. goto out;
  102. }
  103. wl->nvs_len = fw->size;
  104. wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
  105. if (!wl->nvs) {
  106. wl1251_error("could not allocate memory for the nvs file");
  107. ret = -ENOMEM;
  108. goto out;
  109. }
  110. ret = 0;
  111. out:
  112. release_firmware(fw);
  113. return ret;
  114. }
  115. static void wl1251_fw_wakeup(struct wl1251 *wl)
  116. {
  117. u32 elp_reg;
  118. elp_reg = ELPCTRL_WAKE_UP;
  119. wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
  120. elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
  121. if (!(elp_reg & ELPCTRL_WLAN_READY))
  122. wl1251_warning("WLAN not ready");
  123. }
  124. static int wl1251_chip_wakeup(struct wl1251 *wl)
  125. {
  126. int ret;
  127. ret = wl1251_power_on(wl);
  128. if (ret < 0)
  129. return ret;
  130. msleep(WL1251_POWER_ON_SLEEP);
  131. wl->if_ops->reset(wl);
  132. /* We don't need a real memory partition here, because we only want
  133. * to use the registers at this point. */
  134. wl1251_set_partition(wl,
  135. 0x00000000,
  136. 0x00000000,
  137. REGISTERS_BASE,
  138. REGISTERS_DOWN_SIZE);
  139. /* ELP module wake up */
  140. wl1251_fw_wakeup(wl);
  141. /* whal_FwCtrl_BootSm() */
  142. /* 0. read chip id from CHIP_ID */
  143. wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
  144. /* 1. check if chip id is valid */
  145. switch (wl->chip_id) {
  146. case CHIP_ID_1251_PG12:
  147. wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
  148. wl->chip_id);
  149. break;
  150. case CHIP_ID_1251_PG11:
  151. wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
  152. wl->chip_id);
  153. break;
  154. case CHIP_ID_1251_PG10:
  155. default:
  156. wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
  157. ret = -ENODEV;
  158. goto out;
  159. }
  160. if (wl->fw == NULL) {
  161. ret = wl1251_fetch_firmware(wl);
  162. if (ret < 0)
  163. goto out;
  164. }
  165. if (wl->nvs == NULL && !wl->use_eeprom) {
  166. /* No NVS from netlink, try to get it from the filesystem */
  167. ret = wl1251_fetch_nvs(wl);
  168. if (ret < 0)
  169. goto out;
  170. }
  171. out:
  172. return ret;
  173. }
  174. #define WL1251_IRQ_LOOP_COUNT 10
  175. static void wl1251_irq_work(struct work_struct *work)
  176. {
  177. u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
  178. struct wl1251 *wl =
  179. container_of(work, struct wl1251, irq_work);
  180. int ret;
  181. mutex_lock(&wl->mutex);
  182. wl1251_debug(DEBUG_IRQ, "IRQ work");
  183. if (wl->state == WL1251_STATE_OFF)
  184. goto out;
  185. ret = wl1251_ps_elp_wakeup(wl);
  186. if (ret < 0)
  187. goto out;
  188. wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
  189. intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
  190. wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
  191. do {
  192. if (wl->data_path) {
  193. wl->rx_counter = wl1251_mem_read32(
  194. wl, wl->data_path->rx_control_addr);
  195. /* We handle a frmware bug here */
  196. switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
  197. case 0:
  198. wl1251_debug(DEBUG_IRQ,
  199. "RX: FW and host in sync");
  200. intr &= ~WL1251_ACX_INTR_RX0_DATA;
  201. intr &= ~WL1251_ACX_INTR_RX1_DATA;
  202. break;
  203. case 1:
  204. wl1251_debug(DEBUG_IRQ, "RX: FW +1");
  205. intr |= WL1251_ACX_INTR_RX0_DATA;
  206. intr &= ~WL1251_ACX_INTR_RX1_DATA;
  207. break;
  208. case 2:
  209. wl1251_debug(DEBUG_IRQ, "RX: FW +2");
  210. intr |= WL1251_ACX_INTR_RX0_DATA;
  211. intr |= WL1251_ACX_INTR_RX1_DATA;
  212. break;
  213. default:
  214. wl1251_warning(
  215. "RX: FW and host out of sync: %d",
  216. wl->rx_counter - wl->rx_handled);
  217. break;
  218. }
  219. wl->rx_handled = wl->rx_counter;
  220. wl1251_debug(DEBUG_IRQ, "RX counter: %d",
  221. wl->rx_counter);
  222. }
  223. intr &= wl->intr_mask;
  224. if (intr == 0) {
  225. wl1251_debug(DEBUG_IRQ, "INTR is 0");
  226. goto out_sleep;
  227. }
  228. if (intr & WL1251_ACX_INTR_RX0_DATA) {
  229. wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
  230. wl1251_rx(wl);
  231. }
  232. if (intr & WL1251_ACX_INTR_RX1_DATA) {
  233. wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
  234. wl1251_rx(wl);
  235. }
  236. if (intr & WL1251_ACX_INTR_TX_RESULT) {
  237. wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
  238. wl1251_tx_complete(wl);
  239. }
  240. if (intr & WL1251_ACX_INTR_EVENT_A) {
  241. wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
  242. wl1251_event_handle(wl, 0);
  243. }
  244. if (intr & WL1251_ACX_INTR_EVENT_B) {
  245. wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
  246. wl1251_event_handle(wl, 1);
  247. }
  248. if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
  249. wl1251_debug(DEBUG_IRQ,
  250. "WL1251_ACX_INTR_INIT_COMPLETE");
  251. if (--ctr == 0)
  252. break;
  253. intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
  254. } while (intr);
  255. out_sleep:
  256. wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
  257. wl1251_ps_elp_sleep(wl);
  258. out:
  259. mutex_unlock(&wl->mutex);
  260. }
  261. static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
  262. u16 beacon_interval, u8 dtim_period)
  263. {
  264. int ret;
  265. ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
  266. DEFAULT_HW_GEN_MODULATION_TYPE,
  267. wl->tx_mgmt_frm_rate,
  268. wl->tx_mgmt_frm_mod);
  269. if (ret < 0)
  270. goto out;
  271. /*
  272. * Join command applies filters, and if we are not associated,
  273. * BSSID filter must be disabled for association to work.
  274. */
  275. if (is_zero_ether_addr(wl->bssid))
  276. wl->rx_config &= ~CFG_BSSID_FILTER_EN;
  277. ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
  278. dtim_period);
  279. if (ret < 0)
  280. goto out;
  281. ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
  282. if (ret < 0)
  283. wl1251_warning("join timeout");
  284. out:
  285. return ret;
  286. }
  287. static void wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
  288. {
  289. struct wl1251 *wl = hw->priv;
  290. unsigned long flags;
  291. skb_queue_tail(&wl->tx_queue, skb);
  292. /*
  293. * The chip specific setup must run before the first TX packet -
  294. * before that, the tx_work will not be initialized!
  295. */
  296. ieee80211_queue_work(wl->hw, &wl->tx_work);
  297. /*
  298. * The workqueue is slow to process the tx_queue and we need stop
  299. * the queue here, otherwise the queue will get too long.
  300. */
  301. if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
  302. wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
  303. spin_lock_irqsave(&wl->wl_lock, flags);
  304. ieee80211_stop_queues(wl->hw);
  305. wl->tx_queue_stopped = true;
  306. spin_unlock_irqrestore(&wl->wl_lock, flags);
  307. }
  308. }
  309. static int wl1251_op_start(struct ieee80211_hw *hw)
  310. {
  311. struct wl1251 *wl = hw->priv;
  312. struct wiphy *wiphy = hw->wiphy;
  313. int ret = 0;
  314. wl1251_debug(DEBUG_MAC80211, "mac80211 start");
  315. mutex_lock(&wl->mutex);
  316. if (wl->state != WL1251_STATE_OFF) {
  317. wl1251_error("cannot start because not in off state: %d",
  318. wl->state);
  319. ret = -EBUSY;
  320. goto out;
  321. }
  322. ret = wl1251_chip_wakeup(wl);
  323. if (ret < 0)
  324. goto out;
  325. ret = wl1251_boot(wl);
  326. if (ret < 0)
  327. goto out;
  328. ret = wl1251_hw_init(wl);
  329. if (ret < 0)
  330. goto out;
  331. ret = wl1251_acx_station_id(wl);
  332. if (ret < 0)
  333. goto out;
  334. wl->state = WL1251_STATE_ON;
  335. wl1251_info("firmware booted (%s)", wl->fw_ver);
  336. /* update hw/fw version info in wiphy struct */
  337. wiphy->hw_version = wl->chip_id;
  338. strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
  339. out:
  340. if (ret < 0)
  341. wl1251_power_off(wl);
  342. mutex_unlock(&wl->mutex);
  343. return ret;
  344. }
  345. static void wl1251_op_stop(struct ieee80211_hw *hw)
  346. {
  347. struct wl1251 *wl = hw->priv;
  348. wl1251_info("down");
  349. wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
  350. mutex_lock(&wl->mutex);
  351. WARN_ON(wl->state != WL1251_STATE_ON);
  352. if (wl->scanning) {
  353. ieee80211_scan_completed(wl->hw, true);
  354. wl->scanning = false;
  355. }
  356. wl->state = WL1251_STATE_OFF;
  357. wl1251_disable_interrupts(wl);
  358. mutex_unlock(&wl->mutex);
  359. cancel_work_sync(&wl->irq_work);
  360. cancel_work_sync(&wl->tx_work);
  361. cancel_delayed_work_sync(&wl->elp_work);
  362. mutex_lock(&wl->mutex);
  363. /* let's notify MAC80211 about the remaining pending TX frames */
  364. wl1251_tx_flush(wl);
  365. wl1251_power_off(wl);
  366. memset(wl->bssid, 0, ETH_ALEN);
  367. wl->listen_int = 1;
  368. wl->bss_type = MAX_BSS_TYPE;
  369. wl->data_in_count = 0;
  370. wl->rx_counter = 0;
  371. wl->rx_handled = 0;
  372. wl->rx_current_buffer = 0;
  373. wl->rx_last_id = 0;
  374. wl->next_tx_complete = 0;
  375. wl->elp = false;
  376. wl->station_mode = STATION_ACTIVE_MODE;
  377. wl->tx_queue_stopped = false;
  378. wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
  379. wl->rssi_thold = 0;
  380. wl->channel = WL1251_DEFAULT_CHANNEL;
  381. wl1251_debugfs_reset(wl);
  382. mutex_unlock(&wl->mutex);
  383. }
  384. static int wl1251_op_add_interface(struct ieee80211_hw *hw,
  385. struct ieee80211_vif *vif)
  386. {
  387. struct wl1251 *wl = hw->priv;
  388. int ret = 0;
  389. vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
  390. IEEE80211_VIF_SUPPORTS_CQM_RSSI;
  391. wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
  392. vif->type, vif->addr);
  393. mutex_lock(&wl->mutex);
  394. if (wl->vif) {
  395. ret = -EBUSY;
  396. goto out;
  397. }
  398. wl->vif = vif;
  399. switch (vif->type) {
  400. case NL80211_IFTYPE_STATION:
  401. wl->bss_type = BSS_TYPE_STA_BSS;
  402. break;
  403. case NL80211_IFTYPE_ADHOC:
  404. wl->bss_type = BSS_TYPE_IBSS;
  405. break;
  406. default:
  407. ret = -EOPNOTSUPP;
  408. goto out;
  409. }
  410. if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
  411. memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
  412. SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
  413. ret = wl1251_acx_station_id(wl);
  414. if (ret < 0)
  415. goto out;
  416. }
  417. out:
  418. mutex_unlock(&wl->mutex);
  419. return ret;
  420. }
  421. static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
  422. struct ieee80211_vif *vif)
  423. {
  424. struct wl1251 *wl = hw->priv;
  425. mutex_lock(&wl->mutex);
  426. wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
  427. wl->vif = NULL;
  428. mutex_unlock(&wl->mutex);
  429. }
  430. static int wl1251_build_qos_null_data(struct wl1251 *wl)
  431. {
  432. struct ieee80211_qos_hdr template;
  433. memset(&template, 0, sizeof(template));
  434. memcpy(template.addr1, wl->bssid, ETH_ALEN);
  435. memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
  436. memcpy(template.addr3, wl->bssid, ETH_ALEN);
  437. template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
  438. IEEE80211_STYPE_QOS_NULLFUNC |
  439. IEEE80211_FCTL_TODS);
  440. /* FIXME: not sure what priority to use here */
  441. template.qos_ctrl = cpu_to_le16(0);
  442. return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
  443. sizeof(template));
  444. }
  445. static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
  446. {
  447. struct wl1251 *wl = hw->priv;
  448. struct ieee80211_conf *conf = &hw->conf;
  449. int channel, ret = 0;
  450. channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
  451. wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
  452. channel,
  453. conf->flags & IEEE80211_CONF_PS ? "on" : "off",
  454. conf->power_level);
  455. mutex_lock(&wl->mutex);
  456. ret = wl1251_ps_elp_wakeup(wl);
  457. if (ret < 0)
  458. goto out;
  459. if (channel != wl->channel) {
  460. wl->channel = channel;
  461. ret = wl1251_join(wl, wl->bss_type, wl->channel,
  462. wl->beacon_int, wl->dtim_period);
  463. if (ret < 0)
  464. goto out_sleep;
  465. }
  466. if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
  467. wl1251_debug(DEBUG_PSM, "psm enabled");
  468. wl->psm_requested = true;
  469. wl->dtim_period = conf->ps_dtim_period;
  470. ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
  471. wl->dtim_period);
  472. /*
  473. * mac80211 enables PSM only if we're already associated.
  474. */
  475. ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
  476. if (ret < 0)
  477. goto out_sleep;
  478. } else if (!(conf->flags & IEEE80211_CONF_PS) &&
  479. wl->psm_requested) {
  480. wl1251_debug(DEBUG_PSM, "psm disabled");
  481. wl->psm_requested = false;
  482. if (wl->station_mode != STATION_ACTIVE_MODE) {
  483. ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
  484. if (ret < 0)
  485. goto out_sleep;
  486. }
  487. }
  488. if (changed & IEEE80211_CONF_CHANGE_IDLE) {
  489. if (conf->flags & IEEE80211_CONF_IDLE) {
  490. ret = wl1251_ps_set_mode(wl, STATION_IDLE);
  491. if (ret < 0)
  492. goto out_sleep;
  493. } else {
  494. ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
  495. if (ret < 0)
  496. goto out_sleep;
  497. ret = wl1251_join(wl, wl->bss_type, wl->channel,
  498. wl->beacon_int, wl->dtim_period);
  499. if (ret < 0)
  500. goto out_sleep;
  501. }
  502. }
  503. if (conf->power_level != wl->power_level) {
  504. ret = wl1251_acx_tx_power(wl, conf->power_level);
  505. if (ret < 0)
  506. goto out_sleep;
  507. wl->power_level = conf->power_level;
  508. }
  509. out_sleep:
  510. wl1251_ps_elp_sleep(wl);
  511. out:
  512. mutex_unlock(&wl->mutex);
  513. return ret;
  514. }
  515. #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
  516. FIF_ALLMULTI | \
  517. FIF_FCSFAIL | \
  518. FIF_BCN_PRBRESP_PROMISC | \
  519. FIF_CONTROL | \
  520. FIF_OTHER_BSS | \
  521. FIF_PROBE_REQ)
  522. static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
  523. unsigned int changed,
  524. unsigned int *total,u64 multicast)
  525. {
  526. struct wl1251 *wl = hw->priv;
  527. int ret;
  528. wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
  529. *total &= WL1251_SUPPORTED_FILTERS;
  530. changed &= WL1251_SUPPORTED_FILTERS;
  531. if (changed == 0)
  532. /* no filters which we support changed */
  533. return;
  534. mutex_lock(&wl->mutex);
  535. wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
  536. wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
  537. if (*total & FIF_PROMISC_IN_BSS) {
  538. wl->rx_config |= CFG_BSSID_FILTER_EN;
  539. wl->rx_config |= CFG_RX_ALL_GOOD;
  540. }
  541. if (*total & FIF_ALLMULTI)
  542. /*
  543. * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
  544. * all multicast frames
  545. */
  546. wl->rx_config &= ~CFG_MC_FILTER_EN;
  547. if (*total & FIF_FCSFAIL)
  548. wl->rx_filter |= CFG_RX_FCS_ERROR;
  549. if (*total & FIF_BCN_PRBRESP_PROMISC) {
  550. wl->rx_config &= ~CFG_BSSID_FILTER_EN;
  551. wl->rx_config &= ~CFG_SSID_FILTER_EN;
  552. }
  553. if (*total & FIF_CONTROL)
  554. wl->rx_filter |= CFG_RX_CTL_EN;
  555. if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid))
  556. wl->rx_config &= ~CFG_BSSID_FILTER_EN;
  557. if (*total & FIF_PROBE_REQ)
  558. wl->rx_filter |= CFG_RX_PREQ_EN;
  559. if (wl->state == WL1251_STATE_OFF)
  560. goto out;
  561. ret = wl1251_ps_elp_wakeup(wl);
  562. if (ret < 0)
  563. goto out;
  564. /* send filters to firmware */
  565. wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
  566. wl1251_ps_elp_sleep(wl);
  567. out:
  568. mutex_unlock(&wl->mutex);
  569. }
  570. /* HW encryption */
  571. static int wl1251_set_key_type(struct wl1251 *wl,
  572. struct wl1251_cmd_set_keys *key,
  573. enum set_key_cmd cmd,
  574. struct ieee80211_key_conf *mac80211_key,
  575. const u8 *addr)
  576. {
  577. switch (mac80211_key->cipher) {
  578. case WLAN_CIPHER_SUITE_WEP40:
  579. case WLAN_CIPHER_SUITE_WEP104:
  580. if (is_broadcast_ether_addr(addr))
  581. key->key_type = KEY_WEP_DEFAULT;
  582. else
  583. key->key_type = KEY_WEP_ADDR;
  584. mac80211_key->hw_key_idx = mac80211_key->keyidx;
  585. break;
  586. case WLAN_CIPHER_SUITE_TKIP:
  587. if (is_broadcast_ether_addr(addr))
  588. key->key_type = KEY_TKIP_MIC_GROUP;
  589. else
  590. key->key_type = KEY_TKIP_MIC_PAIRWISE;
  591. mac80211_key->hw_key_idx = mac80211_key->keyidx;
  592. break;
  593. case WLAN_CIPHER_SUITE_CCMP:
  594. if (is_broadcast_ether_addr(addr))
  595. key->key_type = KEY_AES_GROUP;
  596. else
  597. key->key_type = KEY_AES_PAIRWISE;
  598. mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
  599. break;
  600. default:
  601. wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
  602. return -EOPNOTSUPP;
  603. }
  604. return 0;
  605. }
  606. static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
  607. struct ieee80211_vif *vif,
  608. struct ieee80211_sta *sta,
  609. struct ieee80211_key_conf *key)
  610. {
  611. struct wl1251 *wl = hw->priv;
  612. struct wl1251_cmd_set_keys *wl_cmd;
  613. const u8 *addr;
  614. int ret;
  615. static const u8 bcast_addr[ETH_ALEN] =
  616. { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
  617. wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
  618. wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
  619. if (!wl_cmd) {
  620. ret = -ENOMEM;
  621. goto out;
  622. }
  623. addr = sta ? sta->addr : bcast_addr;
  624. wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
  625. wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
  626. wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
  627. key->cipher, key->keyidx, key->keylen, key->flags);
  628. wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
  629. if (is_zero_ether_addr(addr)) {
  630. /* We dont support TX only encryption */
  631. ret = -EOPNOTSUPP;
  632. goto out;
  633. }
  634. mutex_lock(&wl->mutex);
  635. ret = wl1251_ps_elp_wakeup(wl);
  636. if (ret < 0)
  637. goto out_unlock;
  638. switch (cmd) {
  639. case SET_KEY:
  640. wl_cmd->key_action = KEY_ADD_OR_REPLACE;
  641. break;
  642. case DISABLE_KEY:
  643. wl_cmd->key_action = KEY_REMOVE;
  644. break;
  645. default:
  646. wl1251_error("Unsupported key cmd 0x%x", cmd);
  647. break;
  648. }
  649. ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
  650. if (ret < 0) {
  651. wl1251_error("Set KEY type failed");
  652. goto out_sleep;
  653. }
  654. if (wl_cmd->key_type != KEY_WEP_DEFAULT)
  655. memcpy(wl_cmd->addr, addr, ETH_ALEN);
  656. if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
  657. (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
  658. /*
  659. * We get the key in the following form:
  660. * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
  661. * but the target is expecting:
  662. * TKIP - RX MIC - TX MIC
  663. */
  664. memcpy(wl_cmd->key, key->key, 16);
  665. memcpy(wl_cmd->key + 16, key->key + 24, 8);
  666. memcpy(wl_cmd->key + 24, key->key + 16, 8);
  667. } else {
  668. memcpy(wl_cmd->key, key->key, key->keylen);
  669. }
  670. wl_cmd->key_size = key->keylen;
  671. wl_cmd->id = key->keyidx;
  672. wl_cmd->ssid_profile = 0;
  673. wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
  674. ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
  675. if (ret < 0) {
  676. wl1251_warning("could not set keys");
  677. goto out_sleep;
  678. }
  679. out_sleep:
  680. wl1251_ps_elp_sleep(wl);
  681. out_unlock:
  682. mutex_unlock(&wl->mutex);
  683. out:
  684. kfree(wl_cmd);
  685. return ret;
  686. }
  687. static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
  688. struct ieee80211_vif *vif,
  689. struct cfg80211_scan_request *req)
  690. {
  691. struct wl1251 *wl = hw->priv;
  692. struct sk_buff *skb;
  693. size_t ssid_len = 0;
  694. u8 *ssid = NULL;
  695. int ret;
  696. wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
  697. if (req->n_ssids) {
  698. ssid = req->ssids[0].ssid;
  699. ssid_len = req->ssids[0].ssid_len;
  700. }
  701. mutex_lock(&wl->mutex);
  702. if (wl->scanning) {
  703. wl1251_debug(DEBUG_SCAN, "scan already in progress");
  704. ret = -EINVAL;
  705. goto out;
  706. }
  707. ret = wl1251_ps_elp_wakeup(wl);
  708. if (ret < 0)
  709. goto out;
  710. skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
  711. req->ie, req->ie_len);
  712. if (!skb) {
  713. ret = -ENOMEM;
  714. goto out;
  715. }
  716. ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
  717. skb->len);
  718. dev_kfree_skb(skb);
  719. if (ret < 0)
  720. goto out_sleep;
  721. ret = wl1251_cmd_trigger_scan_to(wl, 0);
  722. if (ret < 0)
  723. goto out_sleep;
  724. wl->scanning = true;
  725. ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
  726. req->n_channels, WL1251_SCAN_NUM_PROBES);
  727. if (ret < 0) {
  728. wl->scanning = false;
  729. goto out_sleep;
  730. }
  731. out_sleep:
  732. wl1251_ps_elp_sleep(wl);
  733. out:
  734. mutex_unlock(&wl->mutex);
  735. return ret;
  736. }
  737. static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
  738. {
  739. struct wl1251 *wl = hw->priv;
  740. int ret;
  741. mutex_lock(&wl->mutex);
  742. ret = wl1251_ps_elp_wakeup(wl);
  743. if (ret < 0)
  744. goto out;
  745. ret = wl1251_acx_rts_threshold(wl, (u16) value);
  746. if (ret < 0)
  747. wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
  748. wl1251_ps_elp_sleep(wl);
  749. out:
  750. mutex_unlock(&wl->mutex);
  751. return ret;
  752. }
  753. static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
  754. struct ieee80211_vif *vif,
  755. struct ieee80211_bss_conf *bss_conf,
  756. u32 changed)
  757. {
  758. struct wl1251 *wl = hw->priv;
  759. struct sk_buff *beacon, *skb;
  760. int ret;
  761. wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
  762. mutex_lock(&wl->mutex);
  763. ret = wl1251_ps_elp_wakeup(wl);
  764. if (ret < 0)
  765. goto out;
  766. if (changed & BSS_CHANGED_CQM) {
  767. ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
  768. WL1251_DEFAULT_LOW_RSSI_WEIGHT,
  769. WL1251_DEFAULT_LOW_RSSI_DEPTH,
  770. WL1251_ACX_LOW_RSSI_TYPE_EDGE);
  771. if (ret < 0)
  772. goto out;
  773. wl->rssi_thold = bss_conf->cqm_rssi_thold;
  774. }
  775. if (changed & BSS_CHANGED_BSSID) {
  776. memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
  777. skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
  778. if (!skb)
  779. goto out_sleep;
  780. ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
  781. skb->data, skb->len);
  782. dev_kfree_skb(skb);
  783. if (ret < 0)
  784. goto out_sleep;
  785. ret = wl1251_build_qos_null_data(wl);
  786. if (ret < 0)
  787. goto out;
  788. if (wl->bss_type != BSS_TYPE_IBSS) {
  789. ret = wl1251_join(wl, wl->bss_type, wl->channel,
  790. wl->beacon_int, wl->dtim_period);
  791. if (ret < 0)
  792. goto out_sleep;
  793. }
  794. }
  795. if (changed & BSS_CHANGED_ASSOC) {
  796. if (bss_conf->assoc) {
  797. wl->beacon_int = bss_conf->beacon_int;
  798. skb = ieee80211_pspoll_get(wl->hw, wl->vif);
  799. if (!skb)
  800. goto out_sleep;
  801. ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
  802. skb->data,
  803. skb->len);
  804. dev_kfree_skb(skb);
  805. if (ret < 0)
  806. goto out_sleep;
  807. ret = wl1251_acx_aid(wl, bss_conf->aid);
  808. if (ret < 0)
  809. goto out_sleep;
  810. } else {
  811. /* use defaults when not associated */
  812. wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
  813. wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
  814. }
  815. }
  816. if (changed & BSS_CHANGED_ERP_SLOT) {
  817. if (bss_conf->use_short_slot)
  818. ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
  819. else
  820. ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
  821. if (ret < 0) {
  822. wl1251_warning("Set slot time failed %d", ret);
  823. goto out_sleep;
  824. }
  825. }
  826. if (changed & BSS_CHANGED_ERP_PREAMBLE) {
  827. if (bss_conf->use_short_preamble)
  828. wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
  829. else
  830. wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
  831. }
  832. if (changed & BSS_CHANGED_ERP_CTS_PROT) {
  833. if (bss_conf->use_cts_prot)
  834. ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
  835. else
  836. ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
  837. if (ret < 0) {
  838. wl1251_warning("Set ctsprotect failed %d", ret);
  839. goto out_sleep;
  840. }
  841. }
  842. if (changed & BSS_CHANGED_BEACON) {
  843. beacon = ieee80211_beacon_get(hw, vif);
  844. if (!beacon)
  845. goto out_sleep;
  846. ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
  847. beacon->len);
  848. if (ret < 0) {
  849. dev_kfree_skb(beacon);
  850. goto out_sleep;
  851. }
  852. ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
  853. beacon->len);
  854. dev_kfree_skb(beacon);
  855. if (ret < 0)
  856. goto out_sleep;
  857. ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
  858. wl->channel, wl->dtim_period);
  859. if (ret < 0)
  860. goto out_sleep;
  861. }
  862. out_sleep:
  863. wl1251_ps_elp_sleep(wl);
  864. out:
  865. mutex_unlock(&wl->mutex);
  866. }
  867. /* can't be const, mac80211 writes to this */
  868. static struct ieee80211_rate wl1251_rates[] = {
  869. { .bitrate = 10,
  870. .hw_value = 0x1,
  871. .hw_value_short = 0x1, },
  872. { .bitrate = 20,
  873. .hw_value = 0x2,
  874. .hw_value_short = 0x2,
  875. .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  876. { .bitrate = 55,
  877. .hw_value = 0x4,
  878. .hw_value_short = 0x4,
  879. .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  880. { .bitrate = 110,
  881. .hw_value = 0x20,
  882. .hw_value_short = 0x20,
  883. .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  884. { .bitrate = 60,
  885. .hw_value = 0x8,
  886. .hw_value_short = 0x8, },
  887. { .bitrate = 90,
  888. .hw_value = 0x10,
  889. .hw_value_short = 0x10, },
  890. { .bitrate = 120,
  891. .hw_value = 0x40,
  892. .hw_value_short = 0x40, },
  893. { .bitrate = 180,
  894. .hw_value = 0x80,
  895. .hw_value_short = 0x80, },
  896. { .bitrate = 240,
  897. .hw_value = 0x200,
  898. .hw_value_short = 0x200, },
  899. { .bitrate = 360,
  900. .hw_value = 0x400,
  901. .hw_value_short = 0x400, },
  902. { .bitrate = 480,
  903. .hw_value = 0x800,
  904. .hw_value_short = 0x800, },
  905. { .bitrate = 540,
  906. .hw_value = 0x1000,
  907. .hw_value_short = 0x1000, },
  908. };
  909. /* can't be const, mac80211 writes to this */
  910. static struct ieee80211_channel wl1251_channels[] = {
  911. { .hw_value = 1, .center_freq = 2412},
  912. { .hw_value = 2, .center_freq = 2417},
  913. { .hw_value = 3, .center_freq = 2422},
  914. { .hw_value = 4, .center_freq = 2427},
  915. { .hw_value = 5, .center_freq = 2432},
  916. { .hw_value = 6, .center_freq = 2437},
  917. { .hw_value = 7, .center_freq = 2442},
  918. { .hw_value = 8, .center_freq = 2447},
  919. { .hw_value = 9, .center_freq = 2452},
  920. { .hw_value = 10, .center_freq = 2457},
  921. { .hw_value = 11, .center_freq = 2462},
  922. { .hw_value = 12, .center_freq = 2467},
  923. { .hw_value = 13, .center_freq = 2472},
  924. };
  925. static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
  926. struct ieee80211_vif *vif, u16 queue,
  927. const struct ieee80211_tx_queue_params *params)
  928. {
  929. enum wl1251_acx_ps_scheme ps_scheme;
  930. struct wl1251 *wl = hw->priv;
  931. int ret;
  932. mutex_lock(&wl->mutex);
  933. wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
  934. ret = wl1251_ps_elp_wakeup(wl);
  935. if (ret < 0)
  936. goto out;
  937. /* mac80211 uses units of 32 usec */
  938. ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
  939. params->cw_min, params->cw_max,
  940. params->aifs, params->txop * 32);
  941. if (ret < 0)
  942. goto out_sleep;
  943. if (params->uapsd)
  944. ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
  945. else
  946. ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
  947. ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
  948. CHANNEL_TYPE_EDCF,
  949. wl1251_tx_get_queue(queue), ps_scheme,
  950. WL1251_ACX_ACK_POLICY_LEGACY);
  951. if (ret < 0)
  952. goto out_sleep;
  953. out_sleep:
  954. wl1251_ps_elp_sleep(wl);
  955. out:
  956. mutex_unlock(&wl->mutex);
  957. return ret;
  958. }
  959. static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
  960. struct survey_info *survey)
  961. {
  962. struct wl1251 *wl = hw->priv;
  963. struct ieee80211_conf *conf = &hw->conf;
  964. if (idx != 0)
  965. return -ENOENT;
  966. survey->channel = conf->channel;
  967. survey->filled = SURVEY_INFO_NOISE_DBM;
  968. survey->noise = wl->noise;
  969. return 0;
  970. }
  971. /* can't be const, mac80211 writes to this */
  972. static struct ieee80211_supported_band wl1251_band_2ghz = {
  973. .channels = wl1251_channels,
  974. .n_channels = ARRAY_SIZE(wl1251_channels),
  975. .bitrates = wl1251_rates,
  976. .n_bitrates = ARRAY_SIZE(wl1251_rates),
  977. };
  978. static const struct ieee80211_ops wl1251_ops = {
  979. .start = wl1251_op_start,
  980. .stop = wl1251_op_stop,
  981. .add_interface = wl1251_op_add_interface,
  982. .remove_interface = wl1251_op_remove_interface,
  983. .config = wl1251_op_config,
  984. .configure_filter = wl1251_op_configure_filter,
  985. .tx = wl1251_op_tx,
  986. .set_key = wl1251_op_set_key,
  987. .hw_scan = wl1251_op_hw_scan,
  988. .bss_info_changed = wl1251_op_bss_info_changed,
  989. .set_rts_threshold = wl1251_op_set_rts_threshold,
  990. .conf_tx = wl1251_op_conf_tx,
  991. .get_survey = wl1251_op_get_survey,
  992. };
  993. static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
  994. {
  995. unsigned long timeout;
  996. wl1251_reg_write32(wl, EE_ADDR, offset);
  997. wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
  998. /* EE_CTL_READ clears when data is ready */
  999. timeout = jiffies + msecs_to_jiffies(100);
  1000. while (1) {
  1001. if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
  1002. break;
  1003. if (time_after(jiffies, timeout))
  1004. return -ETIMEDOUT;
  1005. msleep(1);
  1006. }
  1007. *data = wl1251_reg_read32(wl, EE_DATA);
  1008. return 0;
  1009. }
  1010. static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
  1011. u8 *data, size_t len)
  1012. {
  1013. size_t i;
  1014. int ret;
  1015. wl1251_reg_write32(wl, EE_START, 0);
  1016. for (i = 0; i < len; i++) {
  1017. ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
  1018. if (ret < 0)
  1019. return ret;
  1020. }
  1021. return 0;
  1022. }
  1023. static int wl1251_read_eeprom_mac(struct wl1251 *wl)
  1024. {
  1025. u8 mac[ETH_ALEN];
  1026. int i, ret;
  1027. wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
  1028. ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
  1029. if (ret < 0) {
  1030. wl1251_warning("failed to read MAC address from EEPROM");
  1031. return ret;
  1032. }
  1033. /* MAC is stored in reverse order */
  1034. for (i = 0; i < ETH_ALEN; i++)
  1035. wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
  1036. return 0;
  1037. }
  1038. static int wl1251_register_hw(struct wl1251 *wl)
  1039. {
  1040. int ret;
  1041. if (wl->mac80211_registered)
  1042. return 0;
  1043. SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
  1044. ret = ieee80211_register_hw(wl->hw);
  1045. if (ret < 0) {
  1046. wl1251_error("unable to register mac80211 hw: %d", ret);
  1047. return ret;
  1048. }
  1049. wl->mac80211_registered = true;
  1050. wl1251_notice("loaded");
  1051. return 0;
  1052. }
  1053. int wl1251_init_ieee80211(struct wl1251 *wl)
  1054. {
  1055. int ret;
  1056. /* The tx descriptor buffer and the TKIP space */
  1057. wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
  1058. + WL1251_TKIP_IV_SPACE;
  1059. /* unit us */
  1060. /* FIXME: find a proper value */
  1061. wl->hw->channel_change_time = 10000;
  1062. wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
  1063. IEEE80211_HW_SUPPORTS_PS |
  1064. IEEE80211_HW_SUPPORTS_UAPSD;
  1065. wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
  1066. BIT(NL80211_IFTYPE_ADHOC);
  1067. wl->hw->wiphy->max_scan_ssids = 1;
  1068. wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
  1069. wl->hw->queues = 4;
  1070. if (wl->use_eeprom)
  1071. wl1251_read_eeprom_mac(wl);
  1072. ret = wl1251_register_hw(wl);
  1073. if (ret)
  1074. goto out;
  1075. wl1251_debugfs_init(wl);
  1076. wl1251_notice("initialized");
  1077. ret = 0;
  1078. out:
  1079. return ret;
  1080. }
  1081. EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
  1082. struct ieee80211_hw *wl1251_alloc_hw(void)
  1083. {
  1084. struct ieee80211_hw *hw;
  1085. struct wl1251 *wl;
  1086. int i;
  1087. static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
  1088. hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
  1089. if (!hw) {
  1090. wl1251_error("could not alloc ieee80211_hw");
  1091. return ERR_PTR(-ENOMEM);
  1092. }
  1093. wl = hw->priv;
  1094. memset(wl, 0, sizeof(*wl));
  1095. wl->hw = hw;
  1096. wl->data_in_count = 0;
  1097. skb_queue_head_init(&wl->tx_queue);
  1098. INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
  1099. wl->channel = WL1251_DEFAULT_CHANNEL;
  1100. wl->scanning = false;
  1101. wl->default_key = 0;
  1102. wl->listen_int = 1;
  1103. wl->rx_counter = 0;
  1104. wl->rx_handled = 0;
  1105. wl->rx_current_buffer = 0;
  1106. wl->rx_last_id = 0;
  1107. wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
  1108. wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
  1109. wl->elp = false;
  1110. wl->station_mode = STATION_ACTIVE_MODE;
  1111. wl->psm_requested = false;
  1112. wl->tx_queue_stopped = false;
  1113. wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
  1114. wl->rssi_thold = 0;
  1115. wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
  1116. wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
  1117. wl->vif = NULL;
  1118. for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
  1119. wl->tx_frames[i] = NULL;
  1120. wl->next_tx_complete = 0;
  1121. INIT_WORK(&wl->irq_work, wl1251_irq_work);
  1122. INIT_WORK(&wl->tx_work, wl1251_tx_work);
  1123. /*
  1124. * In case our MAC address is not correctly set,
  1125. * we use a random but Nokia MAC.
  1126. */
  1127. memcpy(wl->mac_addr, nokia_oui, 3);
  1128. get_random_bytes(wl->mac_addr + 3, 3);
  1129. wl->state = WL1251_STATE_OFF;
  1130. mutex_init(&wl->mutex);
  1131. wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
  1132. wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
  1133. wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
  1134. if (!wl->rx_descriptor) {
  1135. wl1251_error("could not allocate memory for rx descriptor");
  1136. ieee80211_free_hw(hw);
  1137. return ERR_PTR(-ENOMEM);
  1138. }
  1139. return hw;
  1140. }
  1141. EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
  1142. int wl1251_free_hw(struct wl1251 *wl)
  1143. {
  1144. ieee80211_unregister_hw(wl->hw);
  1145. wl1251_debugfs_exit(wl);
  1146. kfree(wl->target_mem_map);
  1147. kfree(wl->data_path);
  1148. vfree(wl->fw);
  1149. wl->fw = NULL;
  1150. kfree(wl->nvs);
  1151. wl->nvs = NULL;
  1152. kfree(wl->rx_descriptor);
  1153. wl->rx_descriptor = NULL;
  1154. ieee80211_free_hw(wl->hw);
  1155. return 0;
  1156. }
  1157. EXPORT_SYMBOL_GPL(wl1251_free_hw);
  1158. MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
  1159. MODULE_LICENSE("GPL");
  1160. MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
  1161. MODULE_FIRMWARE(WL1251_FW_NAME);