2 * This file is part of wl1251
4 * Copyright (C) 2008-2009 Nokia Corporation
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.
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.
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
22 #include <linux/module.h>
23 #include <linux/interrupt.h>
24 #include <linux/firmware.h>
25 #include <linux/delay.h>
26 #include <linux/irq.h>
27 #include <linux/crc32.h>
28 #include <linux/etherdevice.h>
29 #include <linux/vmalloc.h>
30 #include <linux/slab.h>
33 #include "wl12xx_80211.h"
45 void wl1251_enable_interrupts(struct wl1251 *wl)
47 wl->if_ops->enable_irq(wl);
50 void wl1251_disable_interrupts(struct wl1251 *wl)
52 wl->if_ops->disable_irq(wl);
55 static int wl1251_power_off(struct wl1251 *wl)
57 return wl->if_ops->power(wl, false);
60 static int wl1251_power_on(struct wl1251 *wl)
62 return wl->if_ops->power(wl, true);
65 static int wl1251_fetch_firmware(struct wl1251 *wl)
67 const struct firmware *fw;
68 struct device *dev = wiphy_dev(wl->hw->wiphy);
71 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
74 wl1251_error("could not get firmware: %d", ret);
79 wl1251_error("firmware size is not multiple of 32 bits: %zu",
85 wl->fw_len = fw->size;
86 wl->fw = vmalloc(wl->fw_len);
89 wl1251_error("could not allocate memory for the firmware");
94 memcpy(wl->fw, fw->data, wl->fw_len);
104 static int wl1251_fetch_nvs(struct wl1251 *wl)
106 const struct firmware *fw;
107 struct device *dev = wiphy_dev(wl->hw->wiphy);
110 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
113 wl1251_error("could not get nvs file: %d", ret);
118 wl1251_error("nvs size is not multiple of 32 bits: %zu",
124 wl->nvs_len = fw->size;
125 wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
128 wl1251_error("could not allocate memory for the nvs file");
136 release_firmware(fw);
141 static void wl1251_fw_wakeup(struct wl1251 *wl)
145 elp_reg = ELPCTRL_WAKE_UP;
146 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
147 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
149 if (!(elp_reg & ELPCTRL_WLAN_READY))
150 wl1251_warning("WLAN not ready");
153 static int wl1251_chip_wakeup(struct wl1251 *wl)
157 ret = wl1251_power_on(wl);
161 msleep(WL1251_POWER_ON_SLEEP);
162 wl->if_ops->reset(wl);
164 /* We don't need a real memory partition here, because we only want
165 * to use the registers at this point. */
166 wl1251_set_partition(wl,
170 REGISTERS_DOWN_SIZE);
172 /* ELP module wake up */
173 wl1251_fw_wakeup(wl);
175 /* whal_FwCtrl_BootSm() */
177 /* 0. read chip id from CHIP_ID */
178 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
180 /* 1. check if chip id is valid */
182 switch (wl->chip_id) {
183 case CHIP_ID_1251_PG12:
184 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
187 case CHIP_ID_1251_PG11:
188 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
191 case CHIP_ID_1251_PG10:
193 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
198 if (wl->fw == NULL) {
199 ret = wl1251_fetch_firmware(wl);
204 if (wl->nvs == NULL && !wl->use_eeprom) {
205 /* No NVS from netlink, try to get it from the filesystem */
206 ret = wl1251_fetch_nvs(wl);
215 #define WL1251_IRQ_LOOP_COUNT 100
216 irqreturn_t wl1251_irq(int irq, void *cookie)
218 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
219 struct wl1251 *wl = cookie;
222 mutex_lock(&wl->mutex);
224 wl1251_debug(DEBUG_IRQ, "IRQ work");
226 if (wl->state == WL1251_STATE_OFF)
229 ret = wl1251_ps_elp_wakeup(wl);
233 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
235 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
236 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
240 wl->rx_counter = wl1251_mem_read32(
241 wl, wl->data_path->rx_control_addr);
243 /* We handle a frmware bug here */
244 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
246 wl1251_debug(DEBUG_IRQ,
247 "RX: FW and host in sync");
248 intr &= ~WL1251_ACX_INTR_RX0_DATA;
249 intr &= ~WL1251_ACX_INTR_RX1_DATA;
252 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
253 intr |= WL1251_ACX_INTR_RX0_DATA;
254 intr &= ~WL1251_ACX_INTR_RX1_DATA;
257 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
258 intr |= WL1251_ACX_INTR_RX0_DATA;
259 intr |= WL1251_ACX_INTR_RX1_DATA;
263 "RX: FW and host out of sync: %d",
264 wl->rx_counter - wl->rx_handled);
268 wl->rx_handled = wl->rx_counter;
270 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
274 intr &= wl->intr_mask;
277 wl1251_debug(DEBUG_IRQ, "INTR is 0");
281 if (intr & WL1251_ACX_INTR_RX0_DATA) {
282 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
286 if (intr & WL1251_ACX_INTR_RX1_DATA) {
287 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
291 if (intr & WL1251_ACX_INTR_TX_RESULT) {
292 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
293 wl1251_tx_complete(wl);
296 if (intr & WL1251_ACX_INTR_EVENT_A) {
297 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
298 wl1251_event_handle(wl, 0);
301 if (intr & WL1251_ACX_INTR_EVENT_B) {
302 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
303 wl1251_event_handle(wl, 1);
306 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
307 wl1251_debug(DEBUG_IRQ,
308 "WL1251_ACX_INTR_INIT_COMPLETE");
310 while (skb_queue_len(&wl->tx_queue) > 0
311 && wl1251_tx_path_status(wl) == 0) {
313 struct sk_buff *skb = skb_dequeue(&wl->tx_queue);
317 ret = wl1251_tx_frame(wl, skb);
319 skb_queue_head(&wl->tx_queue, skb);
321 } else if (ret < 0) {
329 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
333 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
334 wl1251_ps_elp_sleep(wl);
337 mutex_unlock(&wl->mutex);
340 EXPORT_SYMBOL_GPL(wl1251_irq);
342 static void wl1251_irq_work(struct work_struct *work)
345 container_of(work, struct wl1251, irq_work);
350 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
351 u16 beacon_interval, u8 dtim_period)
355 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
356 DEFAULT_HW_GEN_MODULATION_TYPE,
357 wl->tx_mgmt_frm_rate,
358 wl->tx_mgmt_frm_mod);
363 * Join command applies filters, and if we are not associated,
364 * BSSID filter must be disabled for association to work.
366 if (is_zero_ether_addr(wl->bssid))
367 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
369 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
374 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
376 wl1251_warning("join timeout");
382 static void wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
384 struct wl1251 *wl = hw->priv;
387 skb_queue_tail(&wl->tx_queue, skb);
390 * The chip specific setup must run before the first TX packet -
391 * before that, the tx_work will not be initialized!
394 ieee80211_queue_work(wl->hw, &wl->tx_work);
397 * The workqueue is slow to process the tx_queue and we need stop
398 * the queue here, otherwise the queue will get too long.
400 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
401 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
403 spin_lock_irqsave(&wl->wl_lock, flags);
404 ieee80211_stop_queues(wl->hw);
405 wl->tx_queue_stopped = true;
406 spin_unlock_irqrestore(&wl->wl_lock, flags);
410 static int wl1251_op_start(struct ieee80211_hw *hw)
412 struct wl1251 *wl = hw->priv;
413 struct wiphy *wiphy = hw->wiphy;
416 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
418 mutex_lock(&wl->mutex);
420 if (wl->state != WL1251_STATE_OFF) {
421 wl1251_error("cannot start because not in off state: %d",
427 ret = wl1251_chip_wakeup(wl);
431 ret = wl1251_boot(wl);
435 ret = wl1251_hw_init(wl);
439 ret = wl1251_acx_station_id(wl);
443 wl->state = WL1251_STATE_ON;
445 wl1251_info("firmware booted (%s)", wl->fw_ver);
447 /* update hw/fw version info in wiphy struct */
448 wiphy->hw_version = wl->chip_id;
449 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
453 wl1251_power_off(wl);
455 mutex_unlock(&wl->mutex);
460 static void wl1251_op_stop(struct ieee80211_hw *hw)
462 struct wl1251 *wl = hw->priv;
466 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
468 mutex_lock(&wl->mutex);
470 WARN_ON(wl->state != WL1251_STATE_ON);
473 ieee80211_scan_completed(wl->hw, true);
474 wl->scanning = false;
477 wl->state = WL1251_STATE_OFF;
479 wl1251_disable_interrupts(wl);
481 mutex_unlock(&wl->mutex);
483 cancel_work_sync(&wl->irq_work);
484 cancel_work_sync(&wl->tx_work);
485 cancel_delayed_work_sync(&wl->ps_work);
486 cancel_delayed_work_sync(&wl->elp_work);
488 mutex_lock(&wl->mutex);
490 /* let's notify MAC80211 about the remaining pending TX frames */
492 wl1251_power_off(wl);
494 memset(wl->bssid, 0, ETH_ALEN);
496 wl->bss_type = MAX_BSS_TYPE;
498 wl->data_in_count = 0;
501 wl->rx_current_buffer = 0;
503 wl->next_tx_complete = 0;
505 wl->station_mode = STATION_ACTIVE_MODE;
506 wl->tx_queue_stopped = false;
507 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
509 wl->channel = WL1251_DEFAULT_CHANNEL;
511 wl1251_debugfs_reset(wl);
513 mutex_unlock(&wl->mutex);
516 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
517 struct ieee80211_vif *vif)
519 struct wl1251 *wl = hw->priv;
522 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
523 vif->type, vif->addr);
525 mutex_lock(&wl->mutex);
534 case NL80211_IFTYPE_STATION:
535 wl->bss_type = BSS_TYPE_STA_BSS;
537 case NL80211_IFTYPE_ADHOC:
538 wl->bss_type = BSS_TYPE_IBSS;
545 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
546 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
547 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
548 ret = wl1251_acx_station_id(wl);
554 mutex_unlock(&wl->mutex);
558 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
559 struct ieee80211_vif *vif)
561 struct wl1251 *wl = hw->priv;
563 mutex_lock(&wl->mutex);
564 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
566 mutex_unlock(&wl->mutex);
569 static int wl1251_build_qos_null_data(struct wl1251 *wl)
571 struct ieee80211_qos_hdr template;
573 memset(&template, 0, sizeof(template));
575 memcpy(template.addr1, wl->bssid, ETH_ALEN);
576 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
577 memcpy(template.addr3, wl->bssid, ETH_ALEN);
579 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
580 IEEE80211_STYPE_QOS_NULLFUNC |
581 IEEE80211_FCTL_TODS);
583 /* FIXME: not sure what priority to use here */
584 template.qos_ctrl = cpu_to_le16(0);
586 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
590 static void wl1251_ps_work(struct work_struct *work)
592 struct delayed_work *dwork;
594 unsigned long diff, wait;
600 dwork = container_of(work, struct delayed_work, work);
601 wl = container_of(dwork, struct wl1251, ps_work);
603 mutex_lock(&wl->mutex);
605 /* don't change PS modes while still transitioning, to avoid possbile
606 * fw bugs (it normally takes ~130ms to enable and ~10ms to disable) */
607 if (wl->ps_transitioning) {
608 diff = jiffies - wl->ps_change_jiffies;
609 if (diff > msecs_to_jiffies(500)) {
610 wl1251_error("PS change taking too long: %lu", diff);
611 wl->ps_transitioning = false;
613 //wl1251_error("PS still transitioning");
614 ieee80211_queue_delayed_work(wl->hw, &wl->ps_work,
615 msecs_to_jiffies(50));
620 need_ps = wl->psm_requested && !wl->bss_lost;
621 have_ps = wl->station_mode == STATION_POWER_SAVE_MODE;
623 if (need_ps == have_ps) {
624 //wl1251_info("ps: already in mode %d", have_ps);
628 /* don't enter PS if there was recent activity */
632 diff = jiffies - wl->last_io_jiffies;
633 if (diff < msecs_to_jiffies(150)) {
634 //wl1251_info("ps: postponed psm, j %ld", diff);
635 wait = msecs_to_jiffies(150) - diff + 1;
638 for (i = 0; i < ARRAY_SIZE(wl->tx_frames); i++) {
639 if (wl->tx_frames[i] != NULL) {
640 //wl1251_error(" frm %d busy", i);
641 if (wait < msecs_to_jiffies(50))
642 wait = msecs_to_jiffies(50);
648 ieee80211_queue_delayed_work(wl->hw, &wl->ps_work, wait);
653 ret = wl1251_ps_elp_wakeup(wl);
658 wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
661 ret = wl1251_ps_set_mode(wl,
662 need_ps ? STATION_POWER_SAVE_MODE : STATION_ACTIVE_MODE);
666 //wl1251_info("psm %d, j %ld, d %ld", need_ps,
667 // jiffies - wl->last_io_jiffies);
670 wl1251_ps_elp_sleep(wl);
673 mutex_unlock(&wl->mutex);
676 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
678 struct wl1251 *wl = hw->priv;
679 struct ieee80211_conf *conf = &hw->conf;
680 int channel, ret = 0;
682 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
684 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
686 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
689 mutex_lock(&wl->mutex);
691 ret = wl1251_ps_elp_wakeup(wl);
695 if (channel != wl->channel) {
696 wl->channel = channel;
698 ret = wl1251_join(wl, wl->bss_type, wl->channel,
699 wl->beacon_int, wl->dtim_period);
704 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
705 wl1251_debug(DEBUG_PSM, "psm enabled");
707 wl->psm_requested = true;
709 wl->dtim_period = conf->ps_dtim_period;
711 ieee80211_queue_delayed_work(wl->hw, &wl->ps_work, 0);
712 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
714 wl1251_debug(DEBUG_PSM, "psm disabled");
716 wl->psm_requested = false;
718 ieee80211_queue_delayed_work(wl->hw, &wl->ps_work, 0);
721 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
722 if (conf->flags & IEEE80211_CONF_IDLE) {
723 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
727 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
731 ret = wl1251_event_wait(wl, PS_REPORT_EVENT_ID, 100);
733 wl1251_error("error waiting for wakeup");
735 ret = wl1251_join(wl, wl->bss_type, wl->channel,
736 wl->beacon_int, wl->dtim_period);
742 if (conf->power_level != wl->power_level) {
743 ret = wl1251_acx_tx_power(wl, conf->power_level);
747 wl->power_level = conf->power_level;
751 wl1251_ps_elp_sleep(wl);
754 mutex_unlock(&wl->mutex);
759 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
762 FIF_BCN_PRBRESP_PROMISC | \
767 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
768 unsigned int changed,
769 unsigned int *total,u64 multicast)
771 struct wl1251 *wl = hw->priv;
774 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
776 *total &= WL1251_SUPPORTED_FILTERS;
777 changed &= WL1251_SUPPORTED_FILTERS;
780 /* no filters which we support changed */
783 mutex_lock(&wl->mutex);
785 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
786 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
788 if (*total & FIF_PROMISC_IN_BSS) {
789 wl->rx_config |= CFG_BSSID_FILTER_EN;
790 wl->rx_config |= CFG_RX_ALL_GOOD;
792 if (*total & FIF_ALLMULTI)
794 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
795 * all multicast frames
797 wl->rx_config &= ~CFG_MC_FILTER_EN;
798 if (*total & FIF_FCSFAIL)
799 wl->rx_filter |= CFG_RX_FCS_ERROR;
800 if (*total & FIF_BCN_PRBRESP_PROMISC) {
801 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
802 wl->rx_config &= ~CFG_SSID_FILTER_EN;
804 if (*total & FIF_CONTROL)
805 wl->rx_filter |= CFG_RX_CTL_EN;
806 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid))
807 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
808 if (*total & FIF_PROBE_REQ)
809 wl->rx_filter |= CFG_RX_PREQ_EN;
811 if (wl->state == WL1251_STATE_OFF)
814 ret = wl1251_ps_elp_wakeup(wl);
818 /* send filters to firmware */
819 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
821 wl1251_ps_elp_sleep(wl);
824 mutex_unlock(&wl->mutex);
828 static int wl1251_set_key_type(struct wl1251 *wl,
829 struct wl1251_cmd_set_keys *key,
830 enum set_key_cmd cmd,
831 struct ieee80211_key_conf *mac80211_key,
834 switch (mac80211_key->cipher) {
835 case WLAN_CIPHER_SUITE_WEP40:
836 case WLAN_CIPHER_SUITE_WEP104:
837 if (is_broadcast_ether_addr(addr))
838 key->key_type = KEY_WEP_DEFAULT;
840 key->key_type = KEY_WEP_ADDR;
842 mac80211_key->hw_key_idx = mac80211_key->keyidx;
844 case WLAN_CIPHER_SUITE_TKIP:
845 if (is_broadcast_ether_addr(addr))
846 key->key_type = KEY_TKIP_MIC_GROUP;
848 key->key_type = KEY_TKIP_MIC_PAIRWISE;
850 mac80211_key->hw_key_idx = mac80211_key->keyidx;
852 case WLAN_CIPHER_SUITE_CCMP:
853 if (is_broadcast_ether_addr(addr))
854 key->key_type = KEY_AES_GROUP;
856 key->key_type = KEY_AES_PAIRWISE;
857 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
860 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
867 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
868 struct ieee80211_vif *vif,
869 struct ieee80211_sta *sta,
870 struct ieee80211_key_conf *key)
872 struct wl1251 *wl = hw->priv;
873 struct wl1251_cmd_set_keys *wl_cmd;
877 static const u8 bcast_addr[ETH_ALEN] =
878 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
880 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
882 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
888 addr = sta ? sta->addr : bcast_addr;
890 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
891 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
892 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
893 key->cipher, key->keyidx, key->keylen, key->flags);
894 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
896 if (is_zero_ether_addr(addr)) {
897 /* We dont support TX only encryption */
902 mutex_lock(&wl->mutex);
904 ret = wl1251_ps_elp_wakeup(wl);
910 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
913 wl_cmd->key_action = KEY_REMOVE;
916 wl1251_error("Unsupported key cmd 0x%x", cmd);
920 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
922 wl1251_error("Set KEY type failed");
926 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
927 memcpy(wl_cmd->addr, addr, ETH_ALEN);
929 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
930 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
932 * We get the key in the following form:
933 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
934 * but the target is expecting:
935 * TKIP - RX MIC - TX MIC
937 memcpy(wl_cmd->key, key->key, 16);
938 memcpy(wl_cmd->key + 16, key->key + 24, 8);
939 memcpy(wl_cmd->key + 24, key->key + 16, 8);
942 memcpy(wl_cmd->key, key->key, key->keylen);
944 wl_cmd->key_size = key->keylen;
946 wl_cmd->id = key->keyidx;
947 wl_cmd->ssid_profile = 0;
949 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
951 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
953 wl1251_warning("could not set keys");
958 wl1251_ps_elp_sleep(wl);
961 mutex_unlock(&wl->mutex);
969 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
970 struct ieee80211_vif *vif,
971 struct cfg80211_scan_request *req)
973 struct wl1251 *wl = hw->priv;
979 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
982 ssid = req->ssids[0].ssid;
983 ssid_len = req->ssids[0].ssid_len;
986 mutex_lock(&wl->mutex);
989 wl1251_debug(DEBUG_SCAN, "scan already in progress");
994 ret = wl1251_ps_elp_wakeup(wl);
998 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
999 req->ie, req->ie_len);
1005 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
1011 ret = wl1251_cmd_trigger_scan_to(wl, 0);
1015 wl->scanning = true;
1017 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
1018 req->n_channels, WL1251_SCAN_NUM_PROBES);
1020 wl->scanning = false;
1025 wl1251_ps_elp_sleep(wl);
1028 mutex_unlock(&wl->mutex);
1033 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1035 struct wl1251 *wl = hw->priv;
1038 mutex_lock(&wl->mutex);
1040 ret = wl1251_ps_elp_wakeup(wl);
1044 ret = wl1251_acx_rts_threshold(wl, (u16) value);
1046 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1048 wl1251_ps_elp_sleep(wl);
1051 mutex_unlock(&wl->mutex);
1056 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1057 struct ieee80211_vif *vif,
1058 struct ieee80211_bss_conf *bss_conf,
1061 struct wl1251 *wl = hw->priv;
1062 struct sk_buff *beacon, *skb;
1066 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1068 mutex_lock(&wl->mutex);
1070 ret = wl1251_ps_elp_wakeup(wl);
1074 if (changed & BSS_CHANGED_CQM) {
1075 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
1076 WL1251_DEFAULT_LOW_RSSI_WEIGHT,
1077 WL1251_DEFAULT_LOW_RSSI_DEPTH,
1078 WL1251_ACX_LOW_RSSI_TYPE_EDGE);
1081 wl->rssi_thold = bss_conf->cqm_rssi_thold;
1084 if (changed & BSS_CHANGED_BSSID) {
1085 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1087 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
1091 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
1092 skb->data, skb->len);
1097 ret = wl1251_build_qos_null_data(wl);
1101 if (wl->bss_type != BSS_TYPE_IBSS) {
1102 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1103 wl->beacon_int, wl->dtim_period);
1109 if (changed & BSS_CHANGED_ASSOC) {
1110 if (bss_conf->assoc) {
1111 wl->beacon_int = bss_conf->beacon_int;
1113 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1117 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1124 ret = wl1251_acx_aid(wl, bss_conf->aid);
1128 /* use defaults when not associated */
1129 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1130 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1133 if (changed & BSS_CHANGED_ERP_SLOT) {
1134 if (bss_conf->use_short_slot)
1135 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1137 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1139 wl1251_warning("Set slot time failed %d", ret);
1144 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1145 if (bss_conf->use_short_preamble)
1146 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1148 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1151 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1152 if (bss_conf->use_cts_prot)
1153 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1155 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1157 wl1251_warning("Set ctsprotect failed %d", ret);
1162 if (changed & BSS_CHANGED_ARP_FILTER) {
1163 __be32 addr = bss_conf->arp_addr_list[0];
1164 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
1166 enable = bss_conf->arp_addr_cnt == 1 && bss_conf->assoc;
1167 wl1251_acx_arp_ip_filter(wl, enable, addr);
1173 if (changed & BSS_CHANGED_BEACON) {
1174 beacon = ieee80211_beacon_get(hw, vif);
1178 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1182 dev_kfree_skb(beacon);
1186 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1189 dev_kfree_skb(beacon);
1194 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1195 wl->channel, wl->dtim_period);
1202 wl1251_ps_elp_sleep(wl);
1205 mutex_unlock(&wl->mutex);
1209 /* can't be const, mac80211 writes to this */
1210 static struct ieee80211_rate wl1251_rates[] = {
1213 .hw_value_short = 0x1, },
1216 .hw_value_short = 0x2,
1217 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1220 .hw_value_short = 0x4,
1221 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1224 .hw_value_short = 0x20,
1225 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1228 .hw_value_short = 0x8, },
1231 .hw_value_short = 0x10, },
1234 .hw_value_short = 0x40, },
1237 .hw_value_short = 0x80, },
1240 .hw_value_short = 0x200, },
1243 .hw_value_short = 0x400, },
1246 .hw_value_short = 0x800, },
1249 .hw_value_short = 0x1000, },
1252 /* can't be const, mac80211 writes to this */
1253 static struct ieee80211_channel wl1251_channels[] = {
1254 { .hw_value = 1, .center_freq = 2412},
1255 { .hw_value = 2, .center_freq = 2417},
1256 { .hw_value = 3, .center_freq = 2422},
1257 { .hw_value = 4, .center_freq = 2427},
1258 { .hw_value = 5, .center_freq = 2432},
1259 { .hw_value = 6, .center_freq = 2437},
1260 { .hw_value = 7, .center_freq = 2442},
1261 { .hw_value = 8, .center_freq = 2447},
1262 { .hw_value = 9, .center_freq = 2452},
1263 { .hw_value = 10, .center_freq = 2457},
1264 { .hw_value = 11, .center_freq = 2462},
1265 { .hw_value = 12, .center_freq = 2467},
1266 { .hw_value = 13, .center_freq = 2472},
1269 static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
1270 struct ieee80211_vif *vif, u16 queue,
1271 const struct ieee80211_tx_queue_params *params)
1273 enum wl1251_acx_ps_scheme ps_scheme;
1274 struct wl1251 *wl = hw->priv;
1277 mutex_lock(&wl->mutex);
1279 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1281 ret = wl1251_ps_elp_wakeup(wl);
1285 /* mac80211 uses units of 32 usec */
1286 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1287 params->cw_min, params->cw_max,
1288 params->aifs, params->txop * 32);
1293 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1295 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1297 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1299 wl1251_tx_get_queue(queue), ps_scheme,
1300 WL1251_ACX_ACK_POLICY_LEGACY);
1305 wl1251_ps_elp_sleep(wl);
1308 mutex_unlock(&wl->mutex);
1313 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1314 struct survey_info *survey)
1316 struct wl1251 *wl = hw->priv;
1317 struct ieee80211_conf *conf = &hw->conf;
1322 survey->channel = conf->channel;
1323 survey->filled = SURVEY_INFO_NOISE_DBM;
1324 survey->noise = wl->noise;
1329 /* can't be const, mac80211 writes to this */
1330 static struct ieee80211_supported_band wl1251_band_2ghz = {
1331 .channels = wl1251_channels,
1332 .n_channels = ARRAY_SIZE(wl1251_channels),
1333 .bitrates = wl1251_rates,
1334 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1337 static const struct ieee80211_ops wl1251_ops = {
1338 .start = wl1251_op_start,
1339 .stop = wl1251_op_stop,
1340 .add_interface = wl1251_op_add_interface,
1341 .remove_interface = wl1251_op_remove_interface,
1342 .config = wl1251_op_config,
1343 .configure_filter = wl1251_op_configure_filter,
1345 .set_key = wl1251_op_set_key,
1346 .hw_scan = wl1251_op_hw_scan,
1347 .bss_info_changed = wl1251_op_bss_info_changed,
1348 .set_rts_threshold = wl1251_op_set_rts_threshold,
1349 .conf_tx = wl1251_op_conf_tx,
1350 .get_survey = wl1251_op_get_survey,
1353 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1355 unsigned long timeout;
1357 wl1251_reg_write32(wl, EE_ADDR, offset);
1358 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1360 /* EE_CTL_READ clears when data is ready */
1361 timeout = jiffies + msecs_to_jiffies(100);
1363 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1366 if (time_after(jiffies, timeout))
1372 *data = wl1251_reg_read32(wl, EE_DATA);
1376 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1377 u8 *data, size_t len)
1382 wl1251_reg_write32(wl, EE_START, 0);
1384 for (i = 0; i < len; i++) {
1385 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1393 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1398 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1400 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1402 wl1251_warning("failed to read MAC address from EEPROM");
1406 /* MAC is stored in reverse order */
1407 for (i = 0; i < ETH_ALEN; i++)
1408 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1413 /* temporary (?) hack for EEPROM dumping
1414 * (it seems this can only be done before fw is running) */
1415 static int wl1251_dump_eeprom(struct wl1251 *wl)
1419 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1421 wl->eeprom_dump = kzalloc(1024, GFP_KERNEL);
1422 if (wl->eeprom_dump == NULL) {
1427 ret = wl1251_read_eeprom(wl, 0, wl->eeprom_dump, 1024);
1429 wl1251_error("eeprom dump failed: %d", ret);
1430 kfree(wl->eeprom_dump);
1431 wl->eeprom_dump = NULL;
1435 wl1251_info("eeprom dumped.");
1441 static int wl1251_register_hw(struct wl1251 *wl)
1445 if (wl->mac80211_registered)
1448 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1450 ret = ieee80211_register_hw(wl->hw);
1452 wl1251_error("unable to register mac80211 hw: %d", ret);
1456 wl->mac80211_registered = true;
1458 wl1251_notice("loaded");
1463 int wl1251_init_ieee80211(struct wl1251 *wl)
1467 /* The tx descriptor buffer and the TKIP space */
1468 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1469 + WL1251_TKIP_IV_SPACE;
1472 /* FIXME: find a proper value */
1473 wl->hw->channel_change_time = 10000;
1475 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1476 IEEE80211_HW_SUPPORTS_PS |
1477 IEEE80211_HW_BEACON_FILTER |
1478 IEEE80211_HW_SUPPORTS_UAPSD |
1479 IEEE80211_HW_SUPPORTS_CQM_RSSI;
1481 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1482 BIT(NL80211_IFTYPE_ADHOC);
1483 wl->hw->wiphy->max_scan_ssids = 1;
1484 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1489 wl1251_read_eeprom_mac(wl);
1490 if (wl->dump_eeprom)
1491 wl1251_dump_eeprom(wl);
1493 ret = wl1251_register_hw(wl);
1497 wl1251_debugfs_init(wl);
1498 wl1251_notice("initialized");
1505 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1507 struct ieee80211_hw *wl1251_alloc_hw(void)
1509 struct ieee80211_hw *hw;
1512 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1514 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1516 wl1251_error("could not alloc ieee80211_hw");
1517 return ERR_PTR(-ENOMEM);
1521 memset(wl, 0, sizeof(*wl));
1525 wl->data_in_count = 0;
1527 skb_queue_head_init(&wl->tx_queue);
1529 INIT_DELAYED_WORK(&wl->ps_work, wl1251_ps_work);
1530 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1531 wl->channel = WL1251_DEFAULT_CHANNEL;
1532 wl->scanning = false;
1533 wl->default_key = 0;
1537 wl->rx_current_buffer = 0;
1539 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1540 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1542 wl->station_mode = STATION_ACTIVE_MODE;
1543 wl->psm_requested = false;
1544 wl->tx_queue_stopped = false;
1545 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1547 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1548 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1551 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1552 wl->tx_frames[i] = NULL;
1554 wl->next_tx_complete = 0;
1556 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1557 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1560 * In case our MAC address is not correctly set,
1561 * we use a random but Nokia MAC.
1563 memcpy(wl->mac_addr, nokia_oui, 3);
1564 get_random_bytes(wl->mac_addr + 3, 3);
1566 wl->state = WL1251_STATE_OFF;
1567 mutex_init(&wl->mutex);
1569 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1570 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1572 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1573 if (!wl->rx_descriptor) {
1574 wl1251_error("could not allocate memory for rx descriptor");
1575 ieee80211_free_hw(hw);
1576 return ERR_PTR(-ENOMEM);
1581 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1583 int wl1251_free_hw(struct wl1251 *wl)
1585 ieee80211_unregister_hw(wl->hw);
1587 wl1251_debugfs_exit(wl);
1589 kfree(wl->target_mem_map);
1590 kfree(wl->data_path);
1596 kfree(wl->rx_descriptor);
1597 wl->rx_descriptor = NULL;
1599 ieee80211_free_hw(wl->hw);
1601 if (wl->eeprom_dump != NULL)
1602 kfree(wl->eeprom_dump);
1606 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1608 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1609 MODULE_LICENSE("GPL");
1610 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1611 MODULE_FIRMWARE(WL1251_FW_NAME);