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 #include <linux/crc32.h>
30 #include <linux/etherdevice.h>
31 #include <linux/vmalloc.h>
34 #include "wl12xx_80211.h"
35 #include "wl1251_reg.h"
36 #include "wl1251_io.h"
37 #include "wl1251_cmd.h"
38 #include "wl1251_event.h"
39 #include "wl1251_tx.h"
40 #include "wl1251_rx.h"
41 #include "wl1251_ps.h"
42 #include "wl1251_init.h"
43 #include "wl1251_debugfs.h"
44 #include "wl1251_boot.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 void wl1251_power_off(struct wl1251 *wl)
61 static void wl1251_power_on(struct wl1251 *wl)
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 = kmalloc(wl->nvs_len, GFP_KERNEL);
129 wl1251_error("could not allocate memory for the nvs file");
134 memcpy(wl->nvs, fw->data, wl->nvs_len);
139 release_firmware(fw);
144 static void wl1251_fw_wakeup(struct wl1251 *wl)
148 elp_reg = ELPCTRL_WAKE_UP;
149 wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
150 elp_reg = wl1251_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
152 if (!(elp_reg & ELPCTRL_WLAN_READY))
153 wl1251_warning("WLAN not ready");
156 static int wl1251_chip_wakeup(struct wl1251 *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 /* No NVS from netlink, try to get it from the filesystem */
205 if (wl->nvs == NULL) {
206 ret = wl1251_fetch_nvs(wl);
215 #define WL1251_IRQ_LOOP_COUNT 10
216 static void wl1251_irq_work(struct work_struct *work)
218 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
220 container_of(work, struct wl1251, irq_work);
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_ACX_INTR_EVENT_B)) {
299 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)",
301 if (intr & WL1251_ACX_INTR_EVENT_A)
302 wl1251_event_handle(wl, 0);
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");
314 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
318 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
319 wl1251_ps_elp_sleep(wl);
322 mutex_unlock(&wl->mutex);
325 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
326 u16 beacon_interval, u8 dtim_period)
330 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
331 DEFAULT_HW_GEN_MODULATION_TYPE,
332 wl->tx_mgmt_frm_rate,
333 wl->tx_mgmt_frm_mod);
338 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
344 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
345 * locking we just sleep instead, for now
353 static void wl1251_filter_work(struct work_struct *work)
356 container_of(work, struct wl1251, filter_work);
359 mutex_lock(&wl->mutex);
361 if (wl->state == WL1251_STATE_OFF)
364 ret = wl1251_ps_elp_wakeup(wl);
368 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
374 wl1251_ps_elp_sleep(wl);
377 mutex_unlock(&wl->mutex);
380 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
382 struct wl1251 *wl = hw->priv;
384 skb_queue_tail(&wl->tx_queue, skb);
387 * The chip specific setup must run before the first TX packet -
388 * before that, the tx_work will not be initialized!
391 ieee80211_queue_work(wl->hw, &wl->tx_work);
394 * The workqueue is slow to process the tx_queue and we need stop
395 * the queue here, otherwise the queue will get too long.
397 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
398 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
399 ieee80211_stop_queues(wl->hw);
402 * FIXME: this is racy, the variable is not properly
403 * protected. Maybe fix this by removing the stupid
404 * variable altogether and checking the real queue state?
406 wl->tx_queue_stopped = true;
412 static int wl1251_op_start(struct ieee80211_hw *hw)
414 struct wl1251 *wl = hw->priv;
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);
450 wl1251_power_off(wl);
452 mutex_unlock(&wl->mutex);
457 static void wl1251_op_stop(struct ieee80211_hw *hw)
459 struct wl1251 *wl = hw->priv;
463 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
465 mutex_lock(&wl->mutex);
467 WARN_ON(wl->state != WL1251_STATE_ON);
470 mutex_unlock(&wl->mutex);
471 ieee80211_scan_completed(wl->hw, true);
472 mutex_lock(&wl->mutex);
473 wl->scanning = false;
476 wl->state = WL1251_STATE_OFF;
478 wl1251_disable_interrupts(wl);
480 mutex_unlock(&wl->mutex);
482 cancel_work_sync(&wl->irq_work);
483 cancel_work_sync(&wl->tx_work);
484 cancel_work_sync(&wl->filter_work);
486 mutex_lock(&wl->mutex);
488 /* let's notify MAC80211 about the remaining pending TX frames */
490 wl1251_power_off(wl);
492 memset(wl->bssid, 0, ETH_ALEN);
494 wl->bss_type = MAX_BSS_TYPE;
496 wl->data_in_count = 0;
499 wl->rx_current_buffer = 0;
501 wl->next_tx_complete = 0;
504 wl->tx_queue_stopped = false;
505 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
506 wl->channel = WL1251_DEFAULT_CHANNEL;
508 wl1251_debugfs_reset(wl);
510 mutex_unlock(&wl->mutex);
513 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
514 struct ieee80211_vif *vif)
516 struct wl1251 *wl = hw->priv;
519 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
520 vif->type, vif->addr);
522 mutex_lock(&wl->mutex);
531 case NL80211_IFTYPE_STATION:
532 wl->bss_type = BSS_TYPE_STA_BSS;
534 case NL80211_IFTYPE_ADHOC:
535 wl->bss_type = BSS_TYPE_IBSS;
542 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
543 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
544 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
545 ret = wl1251_acx_station_id(wl);
551 mutex_unlock(&wl->mutex);
555 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
556 struct ieee80211_vif *vif)
558 struct wl1251 *wl = hw->priv;
560 mutex_lock(&wl->mutex);
561 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
563 mutex_unlock(&wl->mutex);
566 static int wl1251_build_qos_null_data(struct wl1251 *wl)
568 struct ieee80211_qos_hdr template;
570 memset(&template, 0, sizeof(template));
572 memcpy(template.addr1, wl->bssid, ETH_ALEN);
573 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
574 memcpy(template.addr3, wl->bssid, ETH_ALEN);
576 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
577 IEEE80211_STYPE_QOS_NULLFUNC |
578 IEEE80211_FCTL_TODS);
580 /* FIXME: not sure what priority to use here */
581 template.qos_ctrl = cpu_to_le16(0);
583 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
587 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
589 struct wl1251 *wl = hw->priv;
590 struct ieee80211_conf *conf = &hw->conf;
591 int channel, ret = 0;
593 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
595 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
597 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
600 mutex_lock(&wl->mutex);
602 ret = wl1251_ps_elp_wakeup(wl);
606 if (channel != wl->channel) {
607 wl->channel = channel;
609 ret = wl1251_join(wl, wl->bss_type, wl->channel,
610 wl->beacon_int, wl->dtim_period);
615 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
616 wl1251_debug(DEBUG_PSM, "psm enabled");
618 wl->psm_requested = true;
621 * We enter PSM only if we're already associated.
622 * If we're not, we'll enter it when joining an SSID,
623 * through the bss_info_changed() hook.
625 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
628 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
630 wl1251_debug(DEBUG_PSM, "psm disabled");
632 wl->psm_requested = false;
635 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
641 if (conf->power_level != wl->power_level) {
642 ret = wl1251_acx_tx_power(wl, conf->power_level);
646 wl->power_level = conf->power_level;
650 wl1251_ps_elp_sleep(wl);
653 mutex_unlock(&wl->mutex);
658 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
661 FIF_BCN_PRBRESP_PROMISC | \
665 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
666 unsigned int changed,
667 unsigned int *total,u64 multicast)
669 struct wl1251 *wl = hw->priv;
671 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
673 *total &= WL1251_SUPPORTED_FILTERS;
674 changed &= WL1251_SUPPORTED_FILTERS;
677 /* no filters which we support changed */
680 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
682 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
683 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
685 if (*total & FIF_PROMISC_IN_BSS) {
686 wl->rx_config |= CFG_BSSID_FILTER_EN;
687 wl->rx_config |= CFG_RX_ALL_GOOD;
689 if (*total & FIF_ALLMULTI)
691 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
692 * all multicast frames
694 wl->rx_config &= ~CFG_MC_FILTER_EN;
695 if (*total & FIF_FCSFAIL)
696 wl->rx_filter |= CFG_RX_FCS_ERROR;
697 if (*total & FIF_BCN_PRBRESP_PROMISC) {
698 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
699 wl->rx_config &= ~CFG_SSID_FILTER_EN;
701 if (*total & FIF_CONTROL)
702 wl->rx_filter |= CFG_RX_CTL_EN;
703 if (*total & FIF_OTHER_BSS)
704 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
707 * FIXME: workqueues need to be properly cancelled on stop(), for
708 * now let's just disable changing the filter settings. They will
709 * be updated any on config().
711 /* schedule_work(&wl->filter_work); */
715 static int wl1251_set_key_type(struct wl1251 *wl,
716 struct wl1251_cmd_set_keys *key,
717 enum set_key_cmd cmd,
718 struct ieee80211_key_conf *mac80211_key,
721 switch (mac80211_key->alg) {
723 if (is_broadcast_ether_addr(addr))
724 key->key_type = KEY_WEP_DEFAULT;
726 key->key_type = KEY_WEP_ADDR;
728 mac80211_key->hw_key_idx = mac80211_key->keyidx;
731 if (is_broadcast_ether_addr(addr))
732 key->key_type = KEY_TKIP_MIC_GROUP;
734 key->key_type = KEY_TKIP_MIC_PAIRWISE;
736 mac80211_key->hw_key_idx = mac80211_key->keyidx;
739 if (is_broadcast_ether_addr(addr))
740 key->key_type = KEY_AES_GROUP;
742 key->key_type = KEY_AES_PAIRWISE;
743 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
746 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
753 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
754 struct ieee80211_vif *vif,
755 struct ieee80211_sta *sta,
756 struct ieee80211_key_conf *key)
758 struct wl1251 *wl = hw->priv;
759 struct wl1251_cmd_set_keys *wl_cmd;
763 static const u8 bcast_addr[ETH_ALEN] =
764 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
766 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
768 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
774 addr = sta ? sta->addr : bcast_addr;
776 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
777 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
778 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
779 key->alg, key->keyidx, key->keylen, key->flags);
780 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
782 if (is_zero_ether_addr(addr)) {
783 /* We dont support TX only encryption */
788 mutex_lock(&wl->mutex);
790 ret = wl1251_ps_elp_wakeup(wl);
796 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
799 wl_cmd->key_action = KEY_REMOVE;
802 wl1251_error("Unsupported key cmd 0x%x", cmd);
806 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
808 wl1251_error("Set KEY type failed");
812 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
813 memcpy(wl_cmd->addr, addr, ETH_ALEN);
815 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
816 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
818 * We get the key in the following form:
819 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
820 * but the target is expecting:
821 * TKIP - RX MIC - TX MIC
823 memcpy(wl_cmd->key, key->key, 16);
824 memcpy(wl_cmd->key + 16, key->key + 24, 8);
825 memcpy(wl_cmd->key + 24, key->key + 16, 8);
828 memcpy(wl_cmd->key, key->key, key->keylen);
830 wl_cmd->key_size = key->keylen;
832 wl_cmd->id = key->keyidx;
833 wl_cmd->ssid_profile = 0;
835 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
837 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
839 wl1251_warning("could not set keys");
844 wl1251_ps_elp_sleep(wl);
847 mutex_unlock(&wl->mutex);
855 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
856 struct cfg80211_scan_request *req)
858 struct wl1251 *wl = hw->priv;
864 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
867 ssid = req->ssids[0].ssid;
868 ssid_len = req->ssids[0].ssid_len;
871 mutex_lock(&wl->mutex);
874 wl1251_debug(DEBUG_SCAN, "scan already in progress");
879 ret = wl1251_ps_elp_wakeup(wl);
883 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
884 req->ie, req->ie_len);
890 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
896 ret = wl1251_cmd_trigger_scan_to(wl, 0);
902 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
903 req->n_channels, WL1251_SCAN_NUM_PROBES);
905 wl->scanning = false;
910 wl1251_ps_elp_sleep(wl);
913 mutex_unlock(&wl->mutex);
918 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
920 struct wl1251 *wl = hw->priv;
923 mutex_lock(&wl->mutex);
925 ret = wl1251_ps_elp_wakeup(wl);
929 ret = wl1251_acx_rts_threshold(wl, (u16) value);
931 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
933 wl1251_ps_elp_sleep(wl);
936 mutex_unlock(&wl->mutex);
941 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
942 struct ieee80211_vif *vif,
943 struct ieee80211_bss_conf *bss_conf,
946 enum wl1251_cmd_ps_mode mode;
947 struct wl1251 *wl = hw->priv;
948 struct sk_buff *beacon, *skb;
951 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
953 mutex_lock(&wl->mutex);
955 ret = wl1251_ps_elp_wakeup(wl);
959 if (changed & BSS_CHANGED_BSSID) {
960 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
962 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
966 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
967 skb->data, skb->len);
972 ret = wl1251_build_qos_null_data(wl);
976 if (wl->bss_type != BSS_TYPE_IBSS) {
977 ret = wl1251_join(wl, wl->bss_type, wl->channel,
978 wl->beacon_int, wl->dtim_period);
984 if (changed & BSS_CHANGED_ASSOC) {
985 if (bss_conf->assoc) {
986 wl->beacon_int = bss_conf->beacon_int;
987 wl->dtim_period = bss_conf->dtim_period;
989 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
991 wl->aid = bss_conf->aid;
993 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
997 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1004 ret = wl1251_acx_aid(wl, wl->aid);
1008 /* If we want to go in PSM but we're not there yet */
1009 if (wl->psm_requested && !wl->psm) {
1010 mode = STATION_POWER_SAVE_MODE;
1011 ret = wl1251_ps_set_mode(wl, mode);
1016 /* use defaults when not associated */
1017 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1018 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1021 if (changed & BSS_CHANGED_ERP_SLOT) {
1022 if (bss_conf->use_short_slot)
1023 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1025 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1027 wl1251_warning("Set slot time failed %d", ret);
1032 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1033 if (bss_conf->use_short_preamble)
1034 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1036 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1039 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1040 if (bss_conf->use_cts_prot)
1041 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1043 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1045 wl1251_warning("Set ctsprotect failed %d", ret);
1050 if (changed & BSS_CHANGED_BEACON) {
1051 beacon = ieee80211_beacon_get(hw, vif);
1052 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1056 dev_kfree_skb(beacon);
1060 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1063 dev_kfree_skb(beacon);
1068 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1069 wl->channel, wl->dtim_period);
1076 wl1251_ps_elp_sleep(wl);
1079 mutex_unlock(&wl->mutex);
1083 /* can't be const, mac80211 writes to this */
1084 static struct ieee80211_rate wl1251_rates[] = {
1087 .hw_value_short = 0x1, },
1090 .hw_value_short = 0x2,
1091 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1094 .hw_value_short = 0x4,
1095 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1098 .hw_value_short = 0x20,
1099 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1102 .hw_value_short = 0x8, },
1105 .hw_value_short = 0x10, },
1108 .hw_value_short = 0x40, },
1111 .hw_value_short = 0x80, },
1114 .hw_value_short = 0x200, },
1117 .hw_value_short = 0x400, },
1120 .hw_value_short = 0x800, },
1123 .hw_value_short = 0x1000, },
1126 /* can't be const, mac80211 writes to this */
1127 static struct ieee80211_channel wl1251_channels[] = {
1128 { .hw_value = 1, .center_freq = 2412},
1129 { .hw_value = 2, .center_freq = 2417},
1130 { .hw_value = 3, .center_freq = 2422},
1131 { .hw_value = 4, .center_freq = 2427},
1132 { .hw_value = 5, .center_freq = 2432},
1133 { .hw_value = 6, .center_freq = 2437},
1134 { .hw_value = 7, .center_freq = 2442},
1135 { .hw_value = 8, .center_freq = 2447},
1136 { .hw_value = 9, .center_freq = 2452},
1137 { .hw_value = 10, .center_freq = 2457},
1138 { .hw_value = 11, .center_freq = 2462},
1139 { .hw_value = 12, .center_freq = 2467},
1140 { .hw_value = 13, .center_freq = 2472},
1143 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1144 const struct ieee80211_tx_queue_params *params)
1146 enum wl1251_acx_ps_scheme ps_scheme;
1147 struct wl1251 *wl = hw->priv;
1150 mutex_lock(&wl->mutex);
1152 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1154 ret = wl1251_ps_elp_wakeup(wl);
1158 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1159 params->cw_min, params->cw_max,
1160 params->aifs, params->txop);
1165 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1167 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1169 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1171 wl1251_tx_get_queue(queue), ps_scheme,
1172 WL1251_ACX_ACK_POLICY_LEGACY);
1177 wl1251_ps_elp_sleep(wl);
1180 mutex_unlock(&wl->mutex);
1185 /* can't be const, mac80211 writes to this */
1186 static struct ieee80211_supported_band wl1251_band_2ghz = {
1187 .channels = wl1251_channels,
1188 .n_channels = ARRAY_SIZE(wl1251_channels),
1189 .bitrates = wl1251_rates,
1190 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1193 static const struct ieee80211_ops wl1251_ops = {
1194 .start = wl1251_op_start,
1195 .stop = wl1251_op_stop,
1196 .add_interface = wl1251_op_add_interface,
1197 .remove_interface = wl1251_op_remove_interface,
1198 .config = wl1251_op_config,
1199 .configure_filter = wl1251_op_configure_filter,
1201 .set_key = wl1251_op_set_key,
1202 .hw_scan = wl1251_op_hw_scan,
1203 .bss_info_changed = wl1251_op_bss_info_changed,
1204 .set_rts_threshold = wl1251_op_set_rts_threshold,
1205 .conf_tx = wl1251_op_conf_tx,
1208 static int wl1251_register_hw(struct wl1251 *wl)
1212 if (wl->mac80211_registered)
1215 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1217 ret = ieee80211_register_hw(wl->hw);
1219 wl1251_error("unable to register mac80211 hw: %d", ret);
1223 wl->mac80211_registered = true;
1225 wl1251_notice("loaded");
1230 int wl1251_init_ieee80211(struct wl1251 *wl)
1234 /* The tx descriptor buffer and the TKIP space */
1235 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1236 + WL1251_TKIP_IV_SPACE;
1239 /* FIXME: find a proper value */
1240 wl->hw->channel_change_time = 10000;
1242 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1243 IEEE80211_HW_NOISE_DBM |
1244 IEEE80211_HW_SUPPORTS_PS |
1245 IEEE80211_HW_BEACON_FILTER |
1246 IEEE80211_HW_SUPPORTS_UAPSD;
1248 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1249 wl->hw->wiphy->max_scan_ssids = 1;
1250 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1254 ret = wl1251_register_hw(wl);
1258 wl1251_debugfs_init(wl);
1259 wl1251_notice("initialized");
1266 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1268 struct ieee80211_hw *wl1251_alloc_hw(void)
1270 struct ieee80211_hw *hw;
1273 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1275 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1277 wl1251_error("could not alloc ieee80211_hw");
1278 return ERR_PTR(-ENOMEM);
1282 memset(wl, 0, sizeof(*wl));
1286 wl->data_in_count = 0;
1288 skb_queue_head_init(&wl->tx_queue);
1290 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1291 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1292 wl->channel = WL1251_DEFAULT_CHANNEL;
1293 wl->scanning = false;
1294 wl->default_key = 0;
1298 wl->rx_current_buffer = 0;
1300 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1301 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1304 wl->psm_requested = false;
1305 wl->tx_queue_stopped = false;
1306 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1307 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1308 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1311 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1312 wl->tx_frames[i] = NULL;
1314 wl->next_tx_complete = 0;
1316 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1317 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1320 * In case our MAC address is not correctly set,
1321 * we use a random but Nokia MAC.
1323 memcpy(wl->mac_addr, nokia_oui, 3);
1324 get_random_bytes(wl->mac_addr + 3, 3);
1326 wl->state = WL1251_STATE_OFF;
1327 mutex_init(&wl->mutex);
1329 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1330 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1332 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1333 if (!wl->rx_descriptor) {
1334 wl1251_error("could not allocate memory for rx descriptor");
1335 ieee80211_free_hw(hw);
1336 return ERR_PTR(-ENOMEM);
1341 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1343 int wl1251_free_hw(struct wl1251 *wl)
1345 ieee80211_unregister_hw(wl->hw);
1347 wl1251_debugfs_exit(wl);
1349 kfree(wl->target_mem_map);
1350 kfree(wl->data_path);
1356 kfree(wl->rx_descriptor);
1357 wl->rx_descriptor = NULL;
1359 ieee80211_free_hw(wl->hw);
1363 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1365 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1366 MODULE_LICENSE("GPL");
1367 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1368 MODULE_ALIAS("spi:wl1251");
1369 MODULE_FIRMWARE(WL1251_FW_NAME);