2 * This file is part of wl1251
4 * Copyright (C) 2008-2009 Nokia Corporation
6 * Contact: Kalle Valo <kalle.valo@nokia.com>
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.
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.
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
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>
29 #if (LINUX_VERSION_CODE == KERNEL_VERSION(2,6,28))
30 #include <linux/device.h>
32 #include <linux/crc32.h>
33 #include <linux/etherdevice.h>
34 #include <linux/vmalloc.h>
37 #include "wl12xx_80211.h"
38 #include "wl1251_reg.h"
39 #include "wl1251_io.h"
40 #include "wl1251_cmd.h"
41 #include "wl1251_event.h"
42 #include "wl1251_tx.h"
43 #include "wl1251_rx.h"
44 #include "wl1251_ps.h"
45 #include "wl1251_init.h"
46 #include "wl1251_debugfs.h"
47 #include "wl1251_boot.h"
51 #define FIF_PROBE_REQ 0
54 void wl1251_enable_interrupts(struct wl1251 *wl)
56 wl->if_ops->enable_irq(wl);
59 void wl1251_disable_interrupts(struct wl1251 *wl)
61 wl->if_ops->disable_irq(wl);
64 static void wl1251_power_off(struct wl1251 *wl)
69 static void wl1251_power_on(struct wl1251 *wl)
74 static int wl1251_fetch_firmware(struct wl1251 *wl)
76 const struct firmware *fw;
77 struct device *dev = wiphy_dev(wl->hw->wiphy);
80 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
83 wl1251_error("could not get firmware: %d", ret);
88 wl1251_error("firmware size is not multiple of 32 bits: %zu",
94 wl->fw_len = fw->size;
95 wl->fw = vmalloc(wl->fw_len);
98 wl1251_error("could not allocate memory for the firmware");
103 memcpy(wl->fw, fw->data, wl->fw_len);
108 release_firmware(fw);
113 static int wl1251_fetch_nvs(struct wl1251 *wl)
115 const struct firmware *fw;
116 struct device *dev = wiphy_dev(wl->hw->wiphy);
119 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
122 wl1251_error("could not get nvs file: %d", ret);
127 wl1251_error("nvs size is not multiple of 32 bits: %zu",
133 wl->nvs_len = fw->size;
134 wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
137 wl1251_error("could not allocate memory for the nvs file");
145 release_firmware(fw);
150 static void wl1251_fw_wakeup(struct wl1251 *wl)
154 elp_reg = ELPCTRL_WAKE_UP;
155 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
156 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
158 if (!(elp_reg & ELPCTRL_WLAN_READY))
159 wl1251_warning("WLAN not ready");
162 static int wl1251_chip_wakeup(struct wl1251 *wl)
167 msleep(WL1251_POWER_ON_SLEEP);
168 wl->if_ops->reset(wl);
170 /* We don't need a real memory partition here, because we only want
171 * to use the registers at this point. */
172 wl1251_set_partition(wl,
176 REGISTERS_DOWN_SIZE);
178 /* ELP module wake up */
179 wl1251_fw_wakeup(wl);
181 /* whal_FwCtrl_BootSm() */
183 /* 0. read chip id from CHIP_ID */
184 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
186 /* 1. check if chip id is valid */
188 switch (wl->chip_id) {
189 case CHIP_ID_1251_PG12:
190 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
193 case CHIP_ID_1251_PG11:
194 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
197 case CHIP_ID_1251_PG10:
199 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
204 if (wl->fw == NULL) {
205 ret = wl1251_fetch_firmware(wl);
210 if (wl->nvs == NULL && !wl->use_eeprom) {
211 /* No NVS from netlink, try to get it from the filesystem */
212 ret = wl1251_fetch_nvs(wl);
221 #define WL1251_IRQ_LOOP_COUNT 10
222 static void wl1251_irq_work(struct work_struct *work)
224 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
226 container_of(work, struct wl1251, irq_work);
229 mutex_lock(&wl->mutex);
231 wl1251_debug(DEBUG_IRQ, "IRQ work");
233 if (wl->state == WL1251_STATE_OFF)
236 ret = wl1251_ps_elp_wakeup(wl);
240 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
242 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
243 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
247 wl->rx_counter = wl1251_mem_read32(
248 wl, wl->data_path->rx_control_addr);
250 /* We handle a frmware bug here */
251 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
253 wl1251_debug(DEBUG_IRQ,
254 "RX: FW and host in sync");
255 intr &= ~WL1251_ACX_INTR_RX0_DATA;
256 intr &= ~WL1251_ACX_INTR_RX1_DATA;
259 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
260 intr |= WL1251_ACX_INTR_RX0_DATA;
261 intr &= ~WL1251_ACX_INTR_RX1_DATA;
264 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
265 intr |= WL1251_ACX_INTR_RX0_DATA;
266 intr |= WL1251_ACX_INTR_RX1_DATA;
270 "RX: FW and host out of sync: %d",
271 wl->rx_counter - wl->rx_handled);
275 wl->rx_handled = wl->rx_counter;
277 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
281 intr &= wl->intr_mask;
284 wl1251_debug(DEBUG_IRQ, "INTR is 0");
288 if (intr & WL1251_ACX_INTR_RX0_DATA) {
289 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
293 if (intr & WL1251_ACX_INTR_RX1_DATA) {
294 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
298 if (intr & WL1251_ACX_INTR_TX_RESULT) {
299 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
300 wl1251_tx_complete(wl);
303 if (intr & WL1251_ACX_INTR_EVENT_A) {
304 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
305 wl1251_event_handle(wl, 0);
308 if (intr & WL1251_ACX_INTR_EVENT_B) {
309 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
310 wl1251_event_handle(wl, 1);
313 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
314 wl1251_debug(DEBUG_IRQ,
315 "WL1251_ACX_INTR_INIT_COMPLETE");
320 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
324 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
325 wl1251_ps_elp_sleep(wl);
328 mutex_unlock(&wl->mutex);
331 /* Atomic irq handler */
332 void wl1251_irq(struct wl1251 *wl)
336 wl1251_debug(DEBUG_IRQ, "IRQ");
338 /* complete the ELP completion */
339 spin_lock_irqsave(&wl->wl_lock, flags);
341 complete(wl->elp_compl);
342 wl->elp_compl = NULL;
344 spin_unlock_irqrestore(&wl->wl_lock, flags);
346 ieee80211_queue_work(wl->hw, &wl->irq_work);
348 EXPORT_SYMBOL_GPL(wl1251_irq);
350 static void wl1251_convert_filters(struct wl1251 *wl,
351 unsigned int mac80211_filters)
353 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
354 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
356 if (mac80211_filters & FIF_PROMISC_IN_BSS) {
357 wl->rx_config |= CFG_BSSID_FILTER_EN;
358 wl->rx_config &= ~CFG_UNI_FILTER_EN;
360 if (mac80211_filters & FIF_ALLMULTI)
362 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
363 * all multicast frames
365 wl->rx_config &= ~CFG_MC_FILTER_EN;
366 if (mac80211_filters & FIF_FCSFAIL)
367 wl->rx_filter |= CFG_RX_FCS_ERROR;
368 if (mac80211_filters & FIF_BCN_PRBRESP_PROMISC) {
369 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
370 wl->rx_config &= ~CFG_SSID_FILTER_EN;
372 if (mac80211_filters & FIF_CONTROL)
373 wl->rx_filter |= CFG_RX_CTL_EN;
374 if (mac80211_filters & FIF_OTHER_BSS)
375 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
376 if (mac80211_filters & FIF_PROBE_REQ)
377 wl->rx_filter |= CFG_RX_PREQ_EN;
380 * If we have no associated BSSID, the filter must be disabled
381 * or else association will break
383 if (is_zero_ether_addr(wl->bssid))
384 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
386 wl1251_debug(DEBUG_FILTERS, "rx_config %04x, rx_filter %04x",
387 wl->rx_config, wl->rx_filter);
390 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
391 u16 beacon_interval, u8 dtim_period)
395 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
396 DEFAULT_HW_GEN_MODULATION_TYPE,
397 wl->tx_mgmt_frm_rate,
398 wl->tx_mgmt_frm_mod);
402 /* Join uses filters, update them */
403 wl1251_convert_filters(wl, wl->mac80211_filters);
405 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
410 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
412 wl1251_warning("join timeout");
418 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
420 struct wl1251 *wl = hw->priv;
423 skb_queue_tail(&wl->tx_queue, skb);
426 * The chip specific setup must run before the first TX packet -
427 * before that, the tx_work will not be initialized!
430 ieee80211_queue_work(wl->hw, &wl->tx_work);
433 * The workqueue is slow to process the tx_queue and we need stop
434 * the queue here, otherwise the queue will get too long.
436 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
437 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
439 spin_lock_irqsave(&wl->wl_lock, flags);
440 ieee80211_stop_queues(wl->hw);
441 wl->tx_queue_stopped = true;
442 spin_unlock_irqrestore(&wl->wl_lock, flags);
448 static int wl1251_op_start(struct ieee80211_hw *hw)
450 struct wl1251 *wl = hw->priv;
451 struct wiphy *wiphy = hw->wiphy;
454 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
456 mutex_lock(&wl->mutex);
458 if (wl->state != WL1251_STATE_OFF) {
459 wl1251_error("cannot start because not in off state: %d",
465 ret = wl1251_chip_wakeup(wl);
469 ret = wl1251_boot(wl);
473 ret = wl1251_hw_init(wl);
477 ret = wl1251_acx_station_id(wl);
481 wl->state = WL1251_STATE_ON;
483 wl1251_info("firmware booted (%s)", wl->fw_ver);
485 /* update hw/fw version info in wiphy struct */
486 wiphy->hw_version = wl->chip_id;
487 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
491 wl1251_power_off(wl);
493 mutex_unlock(&wl->mutex);
498 static void wl1251_op_stop(struct ieee80211_hw *hw)
500 struct wl1251 *wl = hw->priv;
504 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
506 mutex_lock(&wl->mutex);
508 WARN_ON(wl->state != WL1251_STATE_ON);
511 mutex_unlock(&wl->mutex);
512 ieee80211_scan_completed(wl->hw, true);
513 mutex_lock(&wl->mutex);
514 wl->scanning = false;
517 wl->state = WL1251_STATE_OFF;
519 wl1251_disable_interrupts(wl);
521 mutex_unlock(&wl->mutex);
523 cancel_work_sync(&wl->irq_work);
524 cancel_work_sync(&wl->tx_work);
526 mutex_lock(&wl->mutex);
528 /* let's notify MAC80211 about the remaining pending TX frames */
530 wl1251_power_off(wl);
532 memset(wl->bssid, 0, ETH_ALEN);
534 wl->bss_type = MAX_BSS_TYPE;
536 wl->data_in_count = 0;
539 wl->rx_current_buffer = 0;
541 wl->next_tx_complete = 0;
544 wl->tx_queue_stopped = false;
545 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
546 wl->channel = WL1251_DEFAULT_CHANNEL;
548 wl1251_debugfs_reset(wl);
550 mutex_unlock(&wl->mutex);
553 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
554 struct ieee80211_vif *vif)
556 struct wl1251 *wl = hw->priv;
559 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
560 vif->type, vif->addr);
562 mutex_lock(&wl->mutex);
571 case NL80211_IFTYPE_STATION:
572 wl->bss_type = BSS_TYPE_STA_BSS;
574 case NL80211_IFTYPE_ADHOC:
575 wl->bss_type = BSS_TYPE_IBSS;
582 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
583 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
584 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
585 ret = wl1251_acx_station_id(wl);
591 mutex_unlock(&wl->mutex);
595 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
596 struct ieee80211_vif *vif)
598 struct wl1251 *wl = hw->priv;
600 mutex_lock(&wl->mutex);
601 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
603 mutex_unlock(&wl->mutex);
606 static int wl1251_build_qos_null_data(struct wl1251 *wl)
608 struct ieee80211_qos_hdr template;
610 memset(&template, 0, sizeof(template));
612 memcpy(template.addr1, wl->bssid, ETH_ALEN);
613 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
614 memcpy(template.addr3, wl->bssid, ETH_ALEN);
616 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
617 IEEE80211_STYPE_QOS_NULLFUNC |
618 IEEE80211_FCTL_TODS);
620 /* FIXME: not sure what priority to use here */
621 template.qos_ctrl = cpu_to_le16(0);
623 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
627 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
629 struct wl1251 *wl = hw->priv;
630 struct ieee80211_conf *conf = &hw->conf;
631 int channel, ret = 0;
633 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
635 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
637 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
640 mutex_lock(&wl->mutex);
642 ret = wl1251_ps_elp_wakeup(wl);
646 if (channel != wl->channel) {
647 wl->channel = channel;
650 * Use ENABLE_RX command for channel switching when no
651 * interface is present (monitor mode only).
652 * This leaves the tx path disabled in firmware, whereas
653 * the usual JOIN command seems to transmit some frames
656 if (wl->vif == NULL) {
657 ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1);
659 ret = wl1251_join(wl, wl->bss_type, wl->channel,
660 wl->beacon_int, wl->dtim_period);
666 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
667 wl1251_debug(DEBUG_PSM, "psm enabled");
669 wl->psm_requested = true;
671 wl->dtim_period = conf->ps_dtim_period;
673 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
677 * mac80211 enables PSM only if we're already associated.
679 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
682 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
684 wl1251_debug(DEBUG_PSM, "psm disabled");
686 wl->psm_requested = false;
689 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
695 if (conf->power_level != wl->power_level) {
696 ret = wl1251_acx_tx_power(wl, conf->power_level);
700 wl->power_level = conf->power_level;
704 wl1251_ps_elp_sleep(wl);
707 mutex_unlock(&wl->mutex);
712 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
715 FIF_BCN_PRBRESP_PROMISC | \
720 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
721 unsigned int changed,
722 unsigned int *total,u64 multicast)
724 struct wl1251 *wl = hw->priv;
727 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
728 wl1251_debug(DEBUG_FILTERS, "configure filter %x %x", *total, changed);
730 *total &= WL1251_SUPPORTED_FILTERS;
731 changed &= WL1251_SUPPORTED_FILTERS;
734 /* no filters which we support changed */
737 mutex_lock(&wl->mutex);
739 wl->mac80211_filters = *total;
740 wl1251_convert_filters(wl, *total);
742 if (wl->state == WL1251_STATE_OFF)
745 ret = wl1251_ps_elp_wakeup(wl);
749 /* apply configured filters */
750 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
752 wl1251_ps_elp_sleep(wl);
755 mutex_unlock(&wl->mutex);
759 static int wl1251_set_key_type(struct wl1251 *wl,
760 struct wl1251_cmd_set_keys *key,
761 enum set_key_cmd cmd,
762 struct ieee80211_key_conf *mac80211_key,
765 switch (mac80211_key->alg) {
767 if (is_broadcast_ether_addr(addr))
768 key->key_type = KEY_WEP_DEFAULT;
770 key->key_type = KEY_WEP_ADDR;
772 mac80211_key->hw_key_idx = mac80211_key->keyidx;
775 if (is_broadcast_ether_addr(addr))
776 key->key_type = KEY_TKIP_MIC_GROUP;
778 key->key_type = KEY_TKIP_MIC_PAIRWISE;
780 mac80211_key->hw_key_idx = mac80211_key->keyidx;
783 if (is_broadcast_ether_addr(addr))
784 key->key_type = KEY_AES_GROUP;
786 key->key_type = KEY_AES_PAIRWISE;
787 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
790 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
797 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
798 struct ieee80211_vif *vif,
799 struct ieee80211_sta *sta,
800 struct ieee80211_key_conf *key)
802 struct wl1251 *wl = hw->priv;
803 struct wl1251_cmd_set_keys *wl_cmd;
807 static const u8 bcast_addr[ETH_ALEN] =
808 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
810 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
812 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
818 addr = sta ? sta->addr : bcast_addr;
820 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
821 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
822 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
823 key->alg, key->keyidx, key->keylen, key->flags);
824 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
826 if (is_zero_ether_addr(addr)) {
827 /* We dont support TX only encryption */
832 mutex_lock(&wl->mutex);
834 ret = wl1251_ps_elp_wakeup(wl);
840 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
843 wl_cmd->key_action = KEY_REMOVE;
846 wl1251_error("Unsupported key cmd 0x%x", cmd);
850 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
852 wl1251_error("Set KEY type failed");
856 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
857 memcpy(wl_cmd->addr, addr, ETH_ALEN);
859 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
860 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
862 * We get the key in the following form:
863 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
864 * but the target is expecting:
865 * TKIP - RX MIC - TX MIC
867 memcpy(wl_cmd->key, key->key, 16);
868 memcpy(wl_cmd->key + 16, key->key + 24, 8);
869 memcpy(wl_cmd->key + 24, key->key + 16, 8);
872 memcpy(wl_cmd->key, key->key, key->keylen);
874 wl_cmd->key_size = key->keylen;
876 wl_cmd->id = key->keyidx;
877 wl_cmd->ssid_profile = 0;
879 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
881 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
883 wl1251_warning("could not set keys");
888 wl1251_ps_elp_sleep(wl);
891 mutex_unlock(&wl->mutex);
899 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
900 struct cfg80211_scan_request *req)
902 struct wl1251 *wl = hw->priv;
908 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
911 ssid = req->ssids[0].ssid;
912 ssid_len = req->ssids[0].ssid_len;
915 mutex_lock(&wl->mutex);
918 wl1251_debug(DEBUG_SCAN, "scan already in progress");
923 ret = wl1251_ps_elp_wakeup(wl);
927 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
928 req->ie, req->ie_len);
934 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
940 ret = wl1251_cmd_trigger_scan_to(wl, 0);
946 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
947 req->n_channels, WL1251_SCAN_NUM_PROBES);
949 wl1251_debug(DEBUG_SCAN, "scan failed %d", ret);
950 wl->scanning = false;
955 wl1251_ps_elp_sleep(wl);
958 mutex_unlock(&wl->mutex);
963 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
965 struct wl1251 *wl = hw->priv;
968 mutex_lock(&wl->mutex);
970 ret = wl1251_ps_elp_wakeup(wl);
974 ret = wl1251_acx_rts_threshold(wl, (u16) value);
976 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
978 wl1251_ps_elp_sleep(wl);
981 mutex_unlock(&wl->mutex);
986 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
987 struct ieee80211_vif *vif,
988 struct ieee80211_bss_conf *bss_conf,
991 struct wl1251 *wl = hw->priv;
992 struct sk_buff *beacon, *skb;
995 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
997 mutex_lock(&wl->mutex);
999 ret = wl1251_ps_elp_wakeup(wl);
1003 if (changed & BSS_CHANGED_BSSID) {
1004 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1006 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
1010 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
1011 skb->data, skb->len);
1016 ret = wl1251_build_qos_null_data(wl);
1020 if (wl->bss_type != BSS_TYPE_IBSS) {
1021 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1022 wl->beacon_int, wl->dtim_period);
1028 if (changed & BSS_CHANGED_ASSOC) {
1029 if (bss_conf->assoc) {
1030 wl->beacon_int = bss_conf->beacon_int;
1032 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1036 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1043 ret = wl1251_acx_aid(wl, bss_conf->aid);
1047 /* use defaults when not associated */
1048 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1049 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1052 if (changed & BSS_CHANGED_ERP_SLOT) {
1053 if (bss_conf->use_short_slot)
1054 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1056 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1058 wl1251_warning("Set slot time failed %d", ret);
1063 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1064 if (bss_conf->use_short_preamble)
1065 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1067 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1070 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1071 if (bss_conf->use_cts_prot)
1072 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1074 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1076 wl1251_warning("Set ctsprotect failed %d", ret);
1081 if (changed & BSS_CHANGED_BEACON) {
1082 beacon = ieee80211_beacon_get(hw, vif);
1086 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1090 dev_kfree_skb(beacon);
1094 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1097 dev_kfree_skb(beacon);
1102 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1103 wl->channel, wl->dtim_period);
1110 wl1251_ps_elp_sleep(wl);
1113 mutex_unlock(&wl->mutex);
1117 /* can't be const, mac80211 writes to this */
1118 static struct ieee80211_rate wl1251_rates[] = {
1121 .hw_value_short = 0x1, },
1124 .hw_value_short = 0x2,
1125 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1128 .hw_value_short = 0x4,
1129 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1132 .hw_value_short = 0x20,
1133 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1136 .hw_value_short = 0x8, },
1139 .hw_value_short = 0x10, },
1142 .hw_value_short = 0x40, },
1145 .hw_value_short = 0x80, },
1148 .hw_value_short = 0x200, },
1151 .hw_value_short = 0x400, },
1154 .hw_value_short = 0x800, },
1157 .hw_value_short = 0x1000, },
1160 /* can't be const, mac80211 writes to this */
1161 static struct ieee80211_channel wl1251_channels[] = {
1162 { .hw_value = 1, .center_freq = 2412},
1163 { .hw_value = 2, .center_freq = 2417},
1164 { .hw_value = 3, .center_freq = 2422},
1165 { .hw_value = 4, .center_freq = 2427},
1166 { .hw_value = 5, .center_freq = 2432},
1167 { .hw_value = 6, .center_freq = 2437},
1168 { .hw_value = 7, .center_freq = 2442},
1169 { .hw_value = 8, .center_freq = 2447},
1170 { .hw_value = 9, .center_freq = 2452},
1171 { .hw_value = 10, .center_freq = 2457},
1172 { .hw_value = 11, .center_freq = 2462},
1173 { .hw_value = 12, .center_freq = 2467},
1174 { .hw_value = 13, .center_freq = 2472},
1177 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1178 const struct ieee80211_tx_queue_params *params)
1180 enum wl1251_acx_ps_scheme ps_scheme;
1181 struct wl1251 *wl = hw->priv;
1184 mutex_lock(&wl->mutex);
1186 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1188 ret = wl1251_ps_elp_wakeup(wl);
1192 /* mac80211 uses units of 32 usec */
1193 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1194 params->cw_min, params->cw_max,
1195 params->aifs, params->txop * 32);
1200 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1202 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1204 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1206 wl1251_tx_get_queue(queue), ps_scheme,
1207 WL1251_ACX_ACK_POLICY_LEGACY);
1212 wl1251_ps_elp_sleep(wl);
1215 mutex_unlock(&wl->mutex);
1220 /* can't be const, mac80211 writes to this */
1221 static struct ieee80211_supported_band wl1251_band_2ghz = {
1222 .channels = wl1251_channels,
1223 .n_channels = ARRAY_SIZE(wl1251_channels),
1224 .bitrates = wl1251_rates,
1225 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1228 static const struct ieee80211_ops wl1251_ops = {
1229 .start = wl1251_op_start,
1230 .stop = wl1251_op_stop,
1231 .add_interface = wl1251_op_add_interface,
1232 .remove_interface = wl1251_op_remove_interface,
1233 .config = wl1251_op_config,
1234 .configure_filter = wl1251_op_configure_filter,
1236 .set_key = wl1251_op_set_key,
1237 .hw_scan = wl1251_op_hw_scan,
1238 .bss_info_changed = wl1251_op_bss_info_changed,
1239 .set_rts_threshold = wl1251_op_set_rts_threshold,
1240 .conf_tx = wl1251_op_conf_tx,
1243 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1245 unsigned long timeout;
1247 wl1251_reg_write32(wl, EE_ADDR, offset);
1248 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1250 /* EE_CTL_READ clears when data is ready */
1251 timeout = jiffies + msecs_to_jiffies(100);
1253 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1256 if (time_after(jiffies, timeout))
1262 *data = wl1251_reg_read32(wl, EE_DATA);
1266 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1267 u8 *data, size_t len)
1272 wl1251_reg_write32(wl, EE_START, 0);
1274 for (i = 0; i < len; i++) {
1275 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1283 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1288 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1290 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1292 wl1251_warning("failed to read MAC address from EEPROM");
1296 /* MAC is stored in reverse order */
1297 for (i = 0; i < ETH_ALEN; i++)
1298 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1303 static int wl1251_register_hw(struct wl1251 *wl)
1307 if (wl->mac80211_registered)
1310 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1312 ret = ieee80211_register_hw(wl->hw);
1314 wl1251_error("unable to register mac80211 hw: %d", ret);
1318 wl->mac80211_registered = true;
1320 wl1251_notice("loaded");
1325 int wl1251_init_ieee80211(struct wl1251 *wl)
1329 /* The tx descriptor buffer and the TKIP space */
1330 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1331 + WL1251_TKIP_IV_SPACE;
1334 /* FIXME: find a proper value */
1335 wl->hw->channel_change_time = 10000;
1337 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1338 IEEE80211_HW_NOISE_DBM |
1339 IEEE80211_HW_SUPPORTS_PS |
1340 IEEE80211_HW_BEACON_FILTER |
1341 IEEE80211_HW_SUPPORTS_UAPSD;
1343 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1344 BIT(NL80211_IFTYPE_ADHOC);
1345 wl->hw->wiphy->max_scan_ssids = 1;
1346 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1351 wl1251_read_eeprom_mac(wl);
1353 ret = wl1251_register_hw(wl);
1357 wl1251_debugfs_init(wl);
1358 wl1251_notice("initialized");
1365 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1367 struct ieee80211_hw *wl1251_alloc_hw(void)
1369 struct ieee80211_hw *hw;
1372 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1374 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1376 wl1251_error("could not alloc ieee80211_hw");
1377 return ERR_PTR(-ENOMEM);
1381 memset(wl, 0, sizeof(*wl));
1385 wl->data_in_count = 0;
1387 skb_queue_head_init(&wl->tx_queue);
1389 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1390 wl->channel = WL1251_DEFAULT_CHANNEL;
1391 wl->scanning = false;
1392 wl->default_key = 0;
1396 wl->rx_current_buffer = 0;
1398 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1399 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1402 wl->psm_requested = false;
1403 wl->tx_queue_stopped = false;
1404 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1405 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1406 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1409 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1410 wl->tx_frames[i] = NULL;
1412 wl->next_tx_complete = 0;
1414 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1415 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1418 * In case our MAC address is not correctly set,
1419 * we use a random but Nokia MAC.
1421 memcpy(wl->mac_addr, nokia_oui, 3);
1422 get_random_bytes(wl->mac_addr + 3, 3);
1424 wl->state = WL1251_STATE_OFF;
1425 mutex_init(&wl->mutex);
1427 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1428 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1430 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1431 if (!wl->rx_descriptor) {
1432 wl1251_error("could not allocate memory for rx descriptor");
1433 ieee80211_free_hw(hw);
1434 return ERR_PTR(-ENOMEM);
1439 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1441 int wl1251_free_hw(struct wl1251 *wl)
1443 ieee80211_unregister_hw(wl->hw);
1445 wl1251_debugfs_exit(wl);
1447 kfree(wl->target_mem_map);
1448 kfree(wl->data_path);
1454 kfree(wl->rx_descriptor);
1455 wl->rx_descriptor = NULL;
1457 ieee80211_free_hw(wl->hw);
1461 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1463 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1464 MODULE_LICENSE("GPL");
1465 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1466 MODULE_FIRMWARE(WL1251_FW_NAME);