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>
31 #include <linux/netdevice.h>
34 #include "wl12xx_80211.h"
46 void wl1251_enable_interrupts(struct wl1251 *wl)
48 wl->if_ops->enable_irq(wl);
51 void wl1251_disable_interrupts(struct wl1251 *wl)
53 wl->if_ops->disable_irq(wl);
56 static int wl1251_power_off(struct wl1251 *wl)
58 return wl->if_ops->power(wl, false);
61 static int wl1251_power_on(struct wl1251 *wl)
63 return wl->if_ops->power(wl, true);
66 static int wl1251_fetch_firmware(struct wl1251 *wl)
68 const struct firmware *fw;
69 struct device *dev = wiphy_dev(wl->hw->wiphy);
72 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
75 wl1251_error("could not get firmware: %d", ret);
80 wl1251_error("firmware size is not multiple of 32 bits: %zu",
86 wl->fw_len = fw->size;
87 wl->fw = vmalloc(wl->fw_len);
90 wl1251_error("could not allocate memory for the firmware");
95 memcpy(wl->fw, fw->data, wl->fw_len);
100 release_firmware(fw);
105 static int wl1251_fetch_nvs(struct wl1251 *wl)
107 const struct firmware *fw;
108 struct device *dev = wiphy_dev(wl->hw->wiphy);
111 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
114 wl1251_error("could not get nvs file: %d", ret);
119 wl1251_error("nvs size is not multiple of 32 bits: %zu",
125 wl->nvs_len = fw->size;
126 wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
129 wl1251_error("could not allocate memory for the nvs file");
137 release_firmware(fw);
142 static void wl1251_fw_wakeup(struct wl1251 *wl)
146 elp_reg = ELPCTRL_WAKE_UP;
147 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
148 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
150 if (!(elp_reg & ELPCTRL_WLAN_READY))
151 wl1251_warning("WLAN not ready");
154 static int wl1251_chip_wakeup(struct wl1251 *wl)
158 ret = wl1251_power_on(wl);
162 msleep(WL1251_POWER_ON_SLEEP);
163 wl->if_ops->reset(wl);
165 /* We don't need a real memory partition here, because we only want
166 * to use the registers at this point. */
167 wl1251_set_partition(wl,
171 REGISTERS_DOWN_SIZE);
173 /* ELP module wake up */
174 wl1251_fw_wakeup(wl);
176 /* whal_FwCtrl_BootSm() */
178 /* 0. read chip id from CHIP_ID */
179 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
181 /* 1. check if chip id is valid */
183 switch (wl->chip_id) {
184 case CHIP_ID_1251_PG12:
185 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
188 case CHIP_ID_1251_PG11:
189 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
192 case CHIP_ID_1251_PG10:
194 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
199 if (wl->fw == NULL) {
200 ret = wl1251_fetch_firmware(wl);
205 if (wl->nvs == NULL && !wl->use_eeprom) {
206 /* No NVS from netlink, try to get it from the filesystem */
207 ret = wl1251_fetch_nvs(wl);
216 #define WL1251_IRQ_LOOP_COUNT 100
217 irqreturn_t wl1251_irq(int irq, void *cookie)
219 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
220 struct wl1251 *wl = cookie;
223 mutex_lock(&wl->mutex);
225 wl1251_debug(DEBUG_IRQ, "IRQ work");
227 if (wl->state == WL1251_STATE_OFF)
230 ret = wl1251_ps_elp_wakeup(wl);
234 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
236 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
237 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
241 wl->rx_counter = wl1251_mem_read32(
242 wl, wl->data_path->rx_control_addr);
244 /* We handle a frmware bug here */
245 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
247 wl1251_debug(DEBUG_IRQ,
248 "RX: FW and host in sync");
249 intr &= ~WL1251_ACX_INTR_RX0_DATA;
250 intr &= ~WL1251_ACX_INTR_RX1_DATA;
253 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
254 intr |= WL1251_ACX_INTR_RX0_DATA;
255 intr &= ~WL1251_ACX_INTR_RX1_DATA;
258 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
259 intr |= WL1251_ACX_INTR_RX0_DATA;
260 intr |= WL1251_ACX_INTR_RX1_DATA;
264 "RX: FW and host out of sync: %d",
265 wl->rx_counter - wl->rx_handled);
269 wl->rx_handled = wl->rx_counter;
271 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
275 intr &= wl->intr_mask;
278 wl1251_debug(DEBUG_IRQ, "INTR is 0");
282 if (intr & WL1251_ACX_INTR_RX0_DATA) {
283 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
287 if (intr & WL1251_ACX_INTR_RX1_DATA) {
288 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
292 if (intr & WL1251_ACX_INTR_TX_RESULT) {
293 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
294 wl1251_tx_complete(wl);
297 if (intr & WL1251_ACX_INTR_EVENT_A) {
298 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
299 wl1251_event_handle(wl, 0);
302 if (intr & WL1251_ACX_INTR_EVENT_B) {
303 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
304 wl1251_event_handle(wl, 1);
307 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
308 wl1251_debug(DEBUG_IRQ,
309 "WL1251_ACX_INTR_INIT_COMPLETE");
311 while (skb_queue_len(&wl->tx_queue) > 0
312 && wl1251_tx_path_status(wl) == 0) {
314 struct sk_buff *skb = skb_dequeue(&wl->tx_queue);
318 ret = wl1251_tx_frame(wl, skb);
320 skb_queue_head(&wl->tx_queue, skb);
322 } else if (ret < 0) {
330 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
334 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
335 wl1251_ps_elp_sleep(wl);
338 mutex_unlock(&wl->mutex);
341 EXPORT_SYMBOL_GPL(wl1251_irq);
343 static void wl1251_irq_work(struct work_struct *work)
346 container_of(work, struct wl1251, irq_work);
351 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
352 u16 beacon_interval, u8 dtim_period)
356 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
357 DEFAULT_HW_GEN_MODULATION_TYPE,
358 wl->tx_mgmt_frm_rate,
359 wl->tx_mgmt_frm_mod);
364 * Join command applies filters, and if we are not associated,
365 * BSSID filter must be disabled for association to work.
367 if (is_zero_ether_addr(wl->bssid))
368 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
370 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
375 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
377 wl1251_warning("join timeout");
383 static void wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
385 struct wl1251 *wl = hw->priv;
388 skb_queue_tail(&wl->tx_queue, skb);
391 * The chip specific setup must run before the first TX packet -
392 * before that, the tx_work will not be initialized!
395 ieee80211_queue_work(wl->hw, &wl->tx_work);
398 * The workqueue is slow to process the tx_queue and we need stop
399 * the queue here, otherwise the queue will get too long.
401 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
402 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
404 spin_lock_irqsave(&wl->wl_lock, flags);
405 ieee80211_stop_queues(wl->hw);
406 wl->tx_queue_stopped = true;
407 spin_unlock_irqrestore(&wl->wl_lock, flags);
411 static int wl1251_op_start(struct ieee80211_hw *hw)
413 struct wl1251 *wl = hw->priv;
414 struct wiphy *wiphy = hw->wiphy;
417 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
419 mutex_lock(&wl->mutex);
421 if (wl->state != WL1251_STATE_OFF) {
422 wl1251_error("cannot start because not in off state: %d",
428 ret = wl1251_chip_wakeup(wl);
432 ret = wl1251_boot(wl);
436 ret = wl1251_hw_init(wl);
440 ret = wl1251_acx_station_id(wl);
444 wl->state = WL1251_STATE_ON;
446 wl1251_info("firmware booted (%s)", wl->fw_ver);
448 /* update hw/fw version info in wiphy struct */
449 wiphy->hw_version = wl->chip_id;
450 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
454 wl1251_power_off(wl);
456 mutex_unlock(&wl->mutex);
461 static void wl1251_op_stop(struct ieee80211_hw *hw)
463 struct wl1251 *wl = hw->priv;
467 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
469 mutex_lock(&wl->mutex);
471 WARN_ON(wl->state != WL1251_STATE_ON);
474 ieee80211_scan_completed(wl->hw, true);
475 wl->scanning = false;
478 wl->state = WL1251_STATE_OFF;
480 wl1251_disable_interrupts(wl);
482 mutex_unlock(&wl->mutex);
484 cancel_work_sync(&wl->irq_work);
485 cancel_work_sync(&wl->tx_work);
486 cancel_delayed_work_sync(&wl->ps_work);
487 cancel_delayed_work_sync(&wl->elp_work);
489 mutex_lock(&wl->mutex);
491 /* let's notify MAC80211 about the remaining pending TX frames */
493 wl1251_power_off(wl);
495 memset(wl->bssid, 0, ETH_ALEN);
497 wl->bss_type = MAX_BSS_TYPE;
499 wl->data_in_count = 0;
502 wl->rx_current_buffer = 0;
504 wl->next_tx_complete = 0;
506 wl->station_mode = STATION_ACTIVE_MODE;
507 wl->tx_queue_stopped = false;
508 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
510 wl->channel = WL1251_DEFAULT_CHANNEL;
511 wl->monitor_present = false;
514 wl1251_debugfs_reset(wl);
516 mutex_unlock(&wl->mutex);
519 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
520 struct ieee80211_vif *vif)
522 struct wl1251 *wl = hw->priv;
525 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
526 vif->type, vif->addr);
528 mutex_lock(&wl->mutex);
537 case NL80211_IFTYPE_STATION:
538 wl->bss_type = BSS_TYPE_STA_BSS;
540 case NL80211_IFTYPE_ADHOC:
541 wl->bss_type = BSS_TYPE_IBSS;
548 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
549 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
550 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
551 ret = wl1251_acx_station_id(wl);
557 mutex_unlock(&wl->mutex);
561 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
562 struct ieee80211_vif *vif)
564 struct wl1251 *wl = hw->priv;
566 mutex_lock(&wl->mutex);
567 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
569 memset(wl->bssid, 0, ETH_ALEN);
570 mutex_unlock(&wl->mutex);
573 static int wl1251_build_qos_null_data(struct wl1251 *wl)
575 struct ieee80211_qos_hdr template;
577 memset(&template, 0, sizeof(template));
579 memcpy(template.addr1, wl->bssid, ETH_ALEN);
580 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
581 memcpy(template.addr3, wl->bssid, ETH_ALEN);
583 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
584 IEEE80211_STYPE_QOS_NULLFUNC |
585 IEEE80211_FCTL_TODS);
587 /* FIXME: not sure what priority to use here */
588 template.qos_ctrl = cpu_to_le16(0);
590 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
594 static void wl1251_ps_work(struct work_struct *work)
596 struct delayed_work *dwork;
598 unsigned long diff, wait;
604 dwork = container_of(work, struct delayed_work, work);
605 wl = container_of(dwork, struct wl1251, ps_work);
607 mutex_lock(&wl->mutex);
609 /* don't change PS modes while still transitioning, to avoid possbile
610 * fw bugs (it normally takes ~130ms to enable and ~10ms to disable) */
611 if (wl->ps_transitioning) {
612 diff = jiffies - wl->ps_change_jiffies;
613 if (diff > msecs_to_jiffies(500)) {
614 wl1251_error("PS change taking too long: %lu", diff);
615 wl->ps_transitioning = false;
617 //wl1251_error("PS still transitioning");
618 ieee80211_queue_delayed_work(wl->hw, &wl->ps_work,
619 msecs_to_jiffies(50));
624 need_ps = wl->psm_requested && !wl->bss_lost;
625 have_ps = wl->station_mode == STATION_POWER_SAVE_MODE;
627 if (need_ps == have_ps) {
628 //wl1251_info("ps: already in mode %d", have_ps);
632 /* don't enter PS if there was recent activity */
636 diff = jiffies - wl->last_io_jiffies;
637 if (diff < msecs_to_jiffies(150)) {
638 //wl1251_info("ps: postponed psm, j %ld", diff);
639 wait = msecs_to_jiffies(150) - diff + 1;
642 for (i = 0; i < ARRAY_SIZE(wl->tx_frames); i++) {
643 if (wl->tx_frames[i] != NULL) {
644 //wl1251_error(" frm %d busy", i);
645 if (wait < msecs_to_jiffies(50))
646 wait = msecs_to_jiffies(50);
652 ieee80211_queue_delayed_work(wl->hw, &wl->ps_work, wait);
657 ret = wl1251_ps_elp_wakeup(wl);
662 wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
665 ret = wl1251_ps_set_mode(wl,
666 need_ps ? STATION_POWER_SAVE_MODE : STATION_ACTIVE_MODE);
670 //wl1251_info("psm %d, j %ld, d %ld", need_ps,
671 // jiffies - wl->last_io_jiffies);
674 wl1251_ps_elp_sleep(wl);
677 mutex_unlock(&wl->mutex);
680 static bool wl1251_can_do_pm(struct ieee80211_conf *conf, struct wl1251 *wl)
682 return (conf->flags & IEEE80211_CONF_PS) && !wl->monitor_present;
685 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
687 struct wl1251 *wl = hw->priv;
688 struct ieee80211_conf *conf = &hw->conf;
689 int channel, ret = 0;
691 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
693 wl1251_debug(DEBUG_MAC80211,
694 "mac80211 config ch %d monitor %s psm %s power %d",
696 conf->flags & IEEE80211_CONF_MONITOR ? "on" : "off",
697 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
700 mutex_lock(&wl->mutex);
702 ret = wl1251_ps_elp_wakeup(wl);
706 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
709 if (conf->flags & IEEE80211_CONF_MONITOR) {
710 wl->monitor_present = true;
711 mode = DF_SNIFF_MODE_ENABLE | DF_ENCRYPTION_DISABLE;
713 wl->monitor_present = false;
717 ret = wl1251_acx_feature_cfg(wl, mode);
722 if (channel != wl->channel) {
723 wl->channel = channel;
726 * Use ENABLE_RX command for channel switching when no
727 * interface is present (monitor mode only).
728 * This leaves the tx path disabled in firmware, whereas
729 * the usual JOIN command seems to transmit some frames
732 if (wl->vif == NULL) {
734 ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1);
736 ret = wl1251_join(wl, wl->bss_type, wl->channel,
737 wl->beacon_int, wl->dtim_period);
743 if (wl1251_can_do_pm(conf, wl) && !wl->psm_requested) {
744 wl1251_debug(DEBUG_PSM, "psm enabled");
746 wl->psm_requested = true;
748 wl->dtim_period = conf->ps_dtim_period;
750 ieee80211_queue_delayed_work(wl->hw, &wl->ps_work, 0);
751 } else if (!wl1251_can_do_pm(conf, wl) && wl->psm_requested) {
752 wl1251_debug(DEBUG_PSM, "psm disabled");
754 wl->psm_requested = false;
756 ieee80211_queue_delayed_work(wl->hw, &wl->ps_work, 0);
759 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
760 if (conf->flags & IEEE80211_CONF_IDLE) {
761 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
765 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
769 ret = wl1251_event_wait(wl, PS_REPORT_EVENT_ID, 100);
771 wl1251_error("error waiting for wakeup");
773 ret = wl1251_join(wl, wl->bss_type, wl->channel,
774 wl->beacon_int, wl->dtim_period);
780 if (conf->power_level != wl->power_level) {
781 ret = wl1251_acx_tx_power(wl, conf->power_level);
785 wl->power_level = conf->power_level;
789 wl1251_ps_elp_sleep(wl);
792 mutex_unlock(&wl->mutex);
797 struct wl1251_filter_params {
800 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
803 static u64 wl1251_op_prepare_multicast(struct ieee80211_hw *hw,
804 struct netdev_hw_addr_list *mc_list)
806 struct wl1251_filter_params *fp;
807 struct netdev_hw_addr *ha;
808 struct wl1251 *wl = hw->priv;
810 if (unlikely(wl->state == WL1251_STATE_OFF))
813 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
815 wl1251_error("Out of memory setting filters.");
819 /* update multicast filtering parameters */
820 fp->mc_list_length = 0;
821 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
825 netdev_hw_addr_list_for_each(ha, mc_list) {
826 memcpy(fp->mc_list[fp->mc_list_length],
828 fp->mc_list_length++;
832 return (u64)(unsigned long)fp;
835 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
838 FIF_BCN_PRBRESP_PROMISC | \
843 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
844 unsigned int changed,
845 unsigned int *total, u64 multicast)
847 struct wl1251_filter_params *fp = (void *)(unsigned long)multicast;
848 struct wl1251 *wl = hw->priv;
851 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
853 *total &= WL1251_SUPPORTED_FILTERS;
854 changed &= WL1251_SUPPORTED_FILTERS;
857 /* no filters which we support changed */
862 mutex_lock(&wl->mutex);
864 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
865 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
867 if (*total & FIF_PROMISC_IN_BSS) {
868 wl->rx_config |= CFG_BSSID_FILTER_EN;
869 wl->rx_config |= CFG_RX_ALL_GOOD;
871 if (*total & FIF_ALLMULTI)
873 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
874 * all multicast frames
876 wl->rx_config &= ~CFG_MC_FILTER_EN;
877 if (*total & FIF_FCSFAIL)
878 wl->rx_filter |= CFG_RX_FCS_ERROR;
879 if (*total & FIF_BCN_PRBRESP_PROMISC) {
880 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
881 wl->rx_config &= ~CFG_SSID_FILTER_EN;
883 if (*total & FIF_CONTROL)
884 wl->rx_filter |= CFG_RX_CTL_EN;
885 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid))
886 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
887 if (*total & FIF_PROBE_REQ)
888 wl->rx_filter |= CFG_RX_PREQ_EN;
890 if (wl->state == WL1251_STATE_OFF)
893 ret = wl1251_ps_elp_wakeup(wl);
897 if (*total & FIF_ALLMULTI || *total & FIF_PROMISC_IN_BSS)
898 ret = wl1251_acx_group_address_tbl(wl, false, NULL, 0);
900 ret = wl1251_acx_group_address_tbl(wl, fp->enabled,
906 /* send filters to firmware */
907 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
909 wl1251_ps_elp_sleep(wl);
912 mutex_unlock(&wl->mutex);
917 static int wl1251_set_key_type(struct wl1251 *wl,
918 struct wl1251_cmd_set_keys *key,
919 enum set_key_cmd cmd,
920 struct ieee80211_key_conf *mac80211_key,
923 switch (mac80211_key->cipher) {
924 case WLAN_CIPHER_SUITE_WEP40:
925 case WLAN_CIPHER_SUITE_WEP104:
926 if (is_broadcast_ether_addr(addr))
927 key->key_type = KEY_WEP_DEFAULT;
929 key->key_type = KEY_WEP_ADDR;
931 mac80211_key->hw_key_idx = mac80211_key->keyidx;
933 case WLAN_CIPHER_SUITE_TKIP:
934 if (is_broadcast_ether_addr(addr))
935 key->key_type = KEY_TKIP_MIC_GROUP;
937 key->key_type = KEY_TKIP_MIC_PAIRWISE;
939 mac80211_key->hw_key_idx = mac80211_key->keyidx;
941 case WLAN_CIPHER_SUITE_CCMP:
942 if (is_broadcast_ether_addr(addr))
943 key->key_type = KEY_AES_GROUP;
945 key->key_type = KEY_AES_PAIRWISE;
946 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
949 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
956 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
957 struct ieee80211_vif *vif,
958 struct ieee80211_sta *sta,
959 struct ieee80211_key_conf *key)
961 struct wl1251 *wl = hw->priv;
962 struct wl1251_cmd_set_keys *wl_cmd;
966 static const u8 bcast_addr[ETH_ALEN] =
967 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
969 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
971 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
977 addr = sta ? sta->addr : bcast_addr;
979 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
980 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
981 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
982 key->cipher, key->keyidx, key->keylen, key->flags);
983 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
985 if (is_zero_ether_addr(addr)) {
986 /* We dont support TX only encryption */
991 mutex_lock(&wl->mutex);
995 if (wl->monitor_present) {
999 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
1002 wl_cmd->key_action = KEY_REMOVE;
1005 wl1251_error("Unsupported key cmd 0x%x", cmd);
1009 ret = wl1251_ps_elp_wakeup(wl);
1013 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
1015 wl1251_error("Set KEY type failed");
1019 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
1020 memcpy(wl_cmd->addr, addr, ETH_ALEN);
1022 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
1023 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
1025 * We get the key in the following form:
1026 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1027 * but the target is expecting:
1028 * TKIP - RX MIC - TX MIC
1030 memcpy(wl_cmd->key, key->key, 16);
1031 memcpy(wl_cmd->key + 16, key->key + 24, 8);
1032 memcpy(wl_cmd->key + 24, key->key + 16, 8);
1035 memcpy(wl_cmd->key, key->key, key->keylen);
1037 wl_cmd->key_size = key->keylen;
1039 wl_cmd->id = key->keyidx;
1040 wl_cmd->ssid_profile = 0;
1042 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
1044 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
1046 wl1251_warning("could not set keys");
1051 wl1251_ps_elp_sleep(wl);
1054 mutex_unlock(&wl->mutex);
1062 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
1063 struct ieee80211_vif *vif,
1064 struct cfg80211_scan_request *req)
1066 struct wl1251 *wl = hw->priv;
1067 struct sk_buff *skb;
1068 size_t ssid_len = 0;
1072 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
1075 ssid = req->ssids[0].ssid;
1076 ssid_len = req->ssids[0].ssid_len;
1079 mutex_lock(&wl->mutex);
1082 wl1251_debug(DEBUG_SCAN, "scan already in progress");
1087 ret = wl1251_ps_elp_wakeup(wl);
1091 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
1092 req->ie, req->ie_len);
1098 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
1104 ret = wl1251_cmd_trigger_scan_to(wl, 0);
1108 wl->scanning = true;
1110 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
1111 req->n_channels, WL1251_SCAN_NUM_PROBES);
1113 wl->scanning = false;
1118 wl1251_ps_elp_sleep(wl);
1121 mutex_unlock(&wl->mutex);
1126 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1128 struct wl1251 *wl = hw->priv;
1131 mutex_lock(&wl->mutex);
1133 ret = wl1251_ps_elp_wakeup(wl);
1137 ret = wl1251_acx_rts_threshold(wl, (u16) value);
1139 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1141 wl1251_ps_elp_sleep(wl);
1144 mutex_unlock(&wl->mutex);
1149 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1150 struct ieee80211_vif *vif,
1151 struct ieee80211_bss_conf *bss_conf,
1154 struct wl1251 *wl = hw->priv;
1155 struct sk_buff *beacon, *skb;
1159 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1161 mutex_lock(&wl->mutex);
1163 ret = wl1251_ps_elp_wakeup(wl);
1167 if (changed & BSS_CHANGED_CQM) {
1168 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
1169 WL1251_DEFAULT_LOW_RSSI_WEIGHT,
1170 WL1251_DEFAULT_LOW_RSSI_DEPTH,
1171 WL1251_ACX_LOW_RSSI_TYPE_EDGE);
1174 wl->rssi_thold = bss_conf->cqm_rssi_thold;
1177 if (changed & BSS_CHANGED_BSSID) {
1178 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1180 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
1184 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
1185 skb->data, skb->len);
1190 ret = wl1251_build_qos_null_data(wl);
1194 if (wl->bss_type != BSS_TYPE_IBSS) {
1195 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1196 wl->beacon_int, wl->dtim_period);
1202 if (changed & BSS_CHANGED_ASSOC) {
1203 if (bss_conf->assoc) {
1204 wl->beacon_int = bss_conf->beacon_int;
1206 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1210 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1217 ret = wl1251_acx_aid(wl, bss_conf->aid);
1221 /* use defaults when not associated */
1222 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1223 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1226 if (changed & BSS_CHANGED_ERP_SLOT) {
1227 if (bss_conf->use_short_slot)
1228 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1230 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1232 wl1251_warning("Set slot time failed %d", ret);
1237 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1238 if (bss_conf->use_short_preamble)
1239 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1241 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1244 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1245 if (bss_conf->use_cts_prot)
1246 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1248 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1250 wl1251_warning("Set ctsprotect failed %d", ret);
1255 if (changed & BSS_CHANGED_ARP_FILTER) {
1256 __be32 addr = bss_conf->arp_addr_list[0];
1257 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
1259 enable = bss_conf->arp_addr_cnt == 1 && bss_conf->assoc;
1260 wl1251_acx_arp_ip_filter(wl, enable, addr);
1266 if (changed & BSS_CHANGED_BEACON) {
1267 beacon = ieee80211_beacon_get(hw, vif);
1271 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1275 dev_kfree_skb(beacon);
1279 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1282 dev_kfree_skb(beacon);
1287 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1288 wl->channel, wl->dtim_period);
1295 wl1251_ps_elp_sleep(wl);
1298 mutex_unlock(&wl->mutex);
1302 /* can't be const, mac80211 writes to this */
1303 static struct ieee80211_rate wl1251_rates[] = {
1306 .hw_value_short = 0x1, },
1309 .hw_value_short = 0x2,
1310 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1313 .hw_value_short = 0x4,
1314 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1317 .hw_value_short = 0x20,
1318 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1321 .hw_value_short = 0x8, },
1324 .hw_value_short = 0x10, },
1327 .hw_value_short = 0x40, },
1330 .hw_value_short = 0x80, },
1333 .hw_value_short = 0x200, },
1336 .hw_value_short = 0x400, },
1339 .hw_value_short = 0x800, },
1342 .hw_value_short = 0x1000, },
1345 /* can't be const, mac80211 writes to this */
1346 static struct ieee80211_channel wl1251_channels[] = {
1347 { .hw_value = 1, .center_freq = 2412},
1348 { .hw_value = 2, .center_freq = 2417},
1349 { .hw_value = 3, .center_freq = 2422},
1350 { .hw_value = 4, .center_freq = 2427},
1351 { .hw_value = 5, .center_freq = 2432},
1352 { .hw_value = 6, .center_freq = 2437},
1353 { .hw_value = 7, .center_freq = 2442},
1354 { .hw_value = 8, .center_freq = 2447},
1355 { .hw_value = 9, .center_freq = 2452},
1356 { .hw_value = 10, .center_freq = 2457},
1357 { .hw_value = 11, .center_freq = 2462},
1358 { .hw_value = 12, .center_freq = 2467},
1359 { .hw_value = 13, .center_freq = 2472},
1362 static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
1363 struct ieee80211_vif *vif, u16 queue,
1364 const struct ieee80211_tx_queue_params *params)
1366 enum wl1251_acx_ps_scheme ps_scheme;
1367 struct wl1251 *wl = hw->priv;
1370 mutex_lock(&wl->mutex);
1372 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1374 ret = wl1251_ps_elp_wakeup(wl);
1378 /* mac80211 uses units of 32 usec */
1379 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1380 params->cw_min, params->cw_max,
1381 params->aifs, params->txop * 32);
1386 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1388 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1390 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1392 wl1251_tx_get_queue(queue), ps_scheme,
1393 WL1251_ACX_ACK_POLICY_LEGACY);
1398 wl1251_ps_elp_sleep(wl);
1401 mutex_unlock(&wl->mutex);
1406 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1407 struct survey_info *survey)
1409 struct wl1251 *wl = hw->priv;
1410 struct ieee80211_conf *conf = &hw->conf;
1415 survey->channel = conf->channel;
1416 survey->filled = SURVEY_INFO_NOISE_DBM;
1417 survey->noise = wl->noise;
1422 /* can't be const, mac80211 writes to this */
1423 static struct ieee80211_supported_band wl1251_band_2ghz = {
1424 .channels = wl1251_channels,
1425 .n_channels = ARRAY_SIZE(wl1251_channels),
1426 .bitrates = wl1251_rates,
1427 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1430 static const struct ieee80211_ops wl1251_ops = {
1431 .start = wl1251_op_start,
1432 .stop = wl1251_op_stop,
1433 .add_interface = wl1251_op_add_interface,
1434 .remove_interface = wl1251_op_remove_interface,
1435 .config = wl1251_op_config,
1436 .prepare_multicast = wl1251_op_prepare_multicast,
1437 .configure_filter = wl1251_op_configure_filter,
1439 .set_key = wl1251_op_set_key,
1440 .hw_scan = wl1251_op_hw_scan,
1441 .bss_info_changed = wl1251_op_bss_info_changed,
1442 .set_rts_threshold = wl1251_op_set_rts_threshold,
1443 .conf_tx = wl1251_op_conf_tx,
1444 .get_survey = wl1251_op_get_survey,
1447 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1449 unsigned long timeout;
1451 wl1251_reg_write32(wl, EE_ADDR, offset);
1452 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1454 /* EE_CTL_READ clears when data is ready */
1455 timeout = jiffies + msecs_to_jiffies(100);
1457 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1460 if (time_after(jiffies, timeout))
1466 *data = wl1251_reg_read32(wl, EE_DATA);
1470 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1471 u8 *data, size_t len)
1476 wl1251_reg_write32(wl, EE_START, 0);
1478 for (i = 0; i < len; i++) {
1479 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1487 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1492 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1494 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1496 wl1251_warning("failed to read MAC address from EEPROM");
1500 /* MAC is stored in reverse order */
1501 for (i = 0; i < ETH_ALEN; i++)
1502 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1507 /* temporary (?) hack for EEPROM dumping
1508 * (it seems this can only be done before fw is running) */
1509 static int wl1251_dump_eeprom(struct wl1251 *wl)
1513 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1515 wl->eeprom_dump = kzalloc(1024, GFP_KERNEL);
1516 if (wl->eeprom_dump == NULL) {
1521 ret = wl1251_read_eeprom(wl, 0, wl->eeprom_dump, 1024);
1523 wl1251_error("eeprom dump failed: %d", ret);
1524 kfree(wl->eeprom_dump);
1525 wl->eeprom_dump = NULL;
1529 wl1251_info("eeprom dumped.");
1535 static int wl1251_register_hw(struct wl1251 *wl)
1539 if (wl->mac80211_registered)
1542 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1544 ret = ieee80211_register_hw(wl->hw);
1546 wl1251_error("unable to register mac80211 hw: %d", ret);
1550 wl->mac80211_registered = true;
1552 wl1251_notice("loaded");
1557 int wl1251_init_ieee80211(struct wl1251 *wl)
1561 /* The tx descriptor buffer and the TKIP space */
1562 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1563 + WL1251_TKIP_IV_SPACE;
1566 /* FIXME: find a proper value */
1567 wl->hw->channel_change_time = 10000;
1569 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1570 IEEE80211_HW_SUPPORTS_PS |
1571 IEEE80211_HW_BEACON_FILTER |
1572 IEEE80211_HW_SUPPORTS_UAPSD |
1573 IEEE80211_HW_SUPPORTS_CQM_RSSI;
1575 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1576 BIT(NL80211_IFTYPE_ADHOC);
1577 wl->hw->wiphy->max_scan_ssids = 1;
1578 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1583 wl1251_read_eeprom_mac(wl);
1584 if (wl->dump_eeprom)
1585 wl1251_dump_eeprom(wl);
1587 ret = wl1251_register_hw(wl);
1591 wl1251_debugfs_init(wl);
1592 wl1251_notice("initialized");
1599 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1601 struct ieee80211_hw *wl1251_alloc_hw(void)
1603 struct ieee80211_hw *hw;
1606 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1608 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1610 wl1251_error("could not alloc ieee80211_hw");
1611 return ERR_PTR(-ENOMEM);
1615 memset(wl, 0, sizeof(*wl));
1619 wl->data_in_count = 0;
1621 skb_queue_head_init(&wl->tx_queue);
1623 INIT_DELAYED_WORK(&wl->ps_work, wl1251_ps_work);
1624 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1625 wl->channel = WL1251_DEFAULT_CHANNEL;
1626 wl->monitor_present = false;
1628 wl->scanning = false;
1629 wl->bss_type = MAX_BSS_TYPE;
1630 wl->default_key = 0;
1634 wl->rx_current_buffer = 0;
1636 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1637 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1639 wl->station_mode = STATION_ACTIVE_MODE;
1640 wl->psm_requested = false;
1641 wl->tx_queue_stopped = false;
1642 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1644 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1645 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1648 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1649 wl->tx_frames[i] = NULL;
1651 wl->next_tx_complete = 0;
1653 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1654 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1657 * In case our MAC address is not correctly set,
1658 * we use a random but Nokia MAC.
1660 memcpy(wl->mac_addr, nokia_oui, 3);
1661 get_random_bytes(wl->mac_addr + 3, 3);
1663 wl->state = WL1251_STATE_OFF;
1664 mutex_init(&wl->mutex);
1666 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1667 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1669 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1670 if (!wl->rx_descriptor) {
1671 wl1251_error("could not allocate memory for rx descriptor");
1672 ieee80211_free_hw(hw);
1673 return ERR_PTR(-ENOMEM);
1678 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1680 int wl1251_free_hw(struct wl1251 *wl)
1682 ieee80211_unregister_hw(wl->hw);
1684 wl1251_debugfs_exit(wl);
1686 kfree(wl->target_mem_map);
1687 kfree(wl->data_path);
1693 kfree(wl->rx_descriptor);
1694 wl->rx_descriptor = NULL;
1696 ieee80211_free_hw(wl->hw);
1698 if (wl->eeprom_dump != NULL)
1699 kfree(wl->eeprom_dump);
1703 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1705 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1706 MODULE_LICENSE("GPL");
1707 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1708 MODULE_FIRMWARE(WL1251_FW_NAME);