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>
33 #include "wl12xx_80211.h"
34 #include "wl1251_reg.h"
35 #include "wl1251_io.h"
36 #include "wl1251_cmd.h"
37 #include "wl1251_event.h"
38 #include "wl1251_tx.h"
39 #include "wl1251_rx.h"
40 #include "wl1251_ps.h"
41 #include "wl1251_init.h"
42 #include "wl1251_debugfs.h"
43 #include "wl1251_boot.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 void wl1251_power_off(struct wl1251 *wl)
60 static void wl1251_power_on(struct wl1251 *wl)
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 = kmalloc(wl->fw_len, GFP_KERNEL);
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 = kmalloc(wl->nvs_len, GFP_KERNEL);
128 wl1251_error("could not allocate memory for the nvs file");
133 memcpy(wl->nvs, fw->data, wl->nvs_len);
138 release_firmware(fw);
143 static void wl1251_fw_wakeup(struct wl1251 *wl)
147 elp_reg = ELPCTRL_WAKE_UP;
148 wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
149 elp_reg = wl1251_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
151 if (!(elp_reg & ELPCTRL_WLAN_READY))
152 wl1251_warning("WLAN not ready");
155 static int wl1251_chip_wakeup(struct wl1251 *wl)
160 msleep(WL1251_POWER_ON_SLEEP);
161 wl->if_ops->reset(wl);
163 /* We don't need a real memory partition here, because we only want
164 * to use the registers at this point. */
165 wl1251_set_partition(wl,
169 REGISTERS_DOWN_SIZE);
171 /* ELP module wake up */
172 wl1251_fw_wakeup(wl);
174 /* whal_FwCtrl_BootSm() */
176 /* 0. read chip id from CHIP_ID */
177 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
179 /* 1. check if chip id is valid */
181 switch (wl->chip_id) {
182 case CHIP_ID_1251_PG12:
183 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
186 case CHIP_ID_1251_PG10:
187 case CHIP_ID_1251_PG11:
189 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
194 if (wl->fw == NULL) {
195 ret = wl1251_fetch_firmware(wl);
200 /* No NVS from netlink, try to get it from the filesystem */
201 if (wl->nvs == NULL) {
202 ret = wl1251_fetch_nvs(wl);
211 static void wl1251_irq_work(struct work_struct *work)
215 container_of(work, struct wl1251, irq_work);
218 mutex_lock(&wl->mutex);
220 wl1251_debug(DEBUG_IRQ, "IRQ work");
222 if (wl->state == WL1251_STATE_OFF)
225 ret = wl1251_ps_elp_wakeup(wl);
229 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
231 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
232 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
236 wl1251_mem_read32(wl, wl->data_path->rx_control_addr);
238 /* We handle a frmware bug here */
239 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
241 wl1251_debug(DEBUG_IRQ, "RX: FW and host in sync");
242 intr &= ~WL1251_ACX_INTR_RX0_DATA;
243 intr &= ~WL1251_ACX_INTR_RX1_DATA;
246 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
247 intr |= WL1251_ACX_INTR_RX0_DATA;
248 intr &= ~WL1251_ACX_INTR_RX1_DATA;
251 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
252 intr |= WL1251_ACX_INTR_RX0_DATA;
253 intr |= WL1251_ACX_INTR_RX1_DATA;
256 wl1251_warning("RX: FW and host out of sync: %d",
257 wl->rx_counter - wl->rx_handled);
261 wl->rx_handled = wl->rx_counter;
264 wl1251_debug(DEBUG_IRQ, "RX counter: %d", wl->rx_counter);
267 intr &= wl->intr_mask;
270 wl1251_debug(DEBUG_IRQ, "INTR is 0");
271 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK,
277 if (intr & WL1251_ACX_INTR_RX0_DATA) {
278 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
282 if (intr & WL1251_ACX_INTR_RX1_DATA) {
283 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
287 if (intr & WL1251_ACX_INTR_TX_RESULT) {
288 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
289 wl1251_tx_complete(wl);
292 if (intr & (WL1251_ACX_INTR_EVENT_A | WL1251_ACX_INTR_EVENT_B)) {
293 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)", intr);
294 if (intr & WL1251_ACX_INTR_EVENT_A)
295 wl1251_event_handle(wl, 0);
297 wl1251_event_handle(wl, 1);
300 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
301 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_INIT_COMPLETE");
303 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
306 wl1251_ps_elp_sleep(wl);
309 mutex_unlock(&wl->mutex);
312 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
313 u16 beacon_interval, u8 dtim_period)
317 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
318 DEFAULT_HW_GEN_MODULATION_TYPE,
319 wl->tx_mgmt_frm_rate,
320 wl->tx_mgmt_frm_mod);
325 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
331 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
332 * locking we just sleep instead, for now
340 static void wl1251_filter_work(struct work_struct *work)
343 container_of(work, struct wl1251, filter_work);
346 mutex_lock(&wl->mutex);
348 if (wl->state == WL1251_STATE_OFF)
351 ret = wl1251_ps_elp_wakeup(wl);
355 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
361 wl1251_ps_elp_sleep(wl);
364 mutex_unlock(&wl->mutex);
367 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
369 struct wl1251 *wl = hw->priv;
371 skb_queue_tail(&wl->tx_queue, skb);
374 * The chip specific setup must run before the first TX packet -
375 * before that, the tx_work will not be initialized!
378 ieee80211_queue_work(wl->hw, &wl->tx_work);
381 * The workqueue is slow to process the tx_queue and we need stop
382 * the queue here, otherwise the queue will get too long.
384 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
385 ieee80211_stop_queues(wl->hw);
388 * FIXME: this is racy, the variable is not properly
389 * protected. Maybe fix this by removing the stupid
390 * variable altogether and checking the real queue state?
392 wl->tx_queue_stopped = true;
398 static int wl1251_op_start(struct ieee80211_hw *hw)
400 struct wl1251 *wl = hw->priv;
403 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
405 mutex_lock(&wl->mutex);
407 if (wl->state != WL1251_STATE_OFF) {
408 wl1251_error("cannot start because not in off state: %d",
414 ret = wl1251_chip_wakeup(wl);
418 ret = wl1251_boot(wl);
422 ret = wl1251_hw_init(wl);
426 ret = wl1251_acx_station_id(wl);
430 wl->state = WL1251_STATE_ON;
432 wl1251_info("firmware booted (%s)", wl->fw_ver);
436 wl1251_power_off(wl);
438 mutex_unlock(&wl->mutex);
443 static void wl1251_op_stop(struct ieee80211_hw *hw)
445 struct wl1251 *wl = hw->priv;
449 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
451 mutex_lock(&wl->mutex);
453 WARN_ON(wl->state != WL1251_STATE_ON);
456 mutex_unlock(&wl->mutex);
457 ieee80211_scan_completed(wl->hw, true);
458 mutex_lock(&wl->mutex);
459 wl->scanning = false;
462 wl->state = WL1251_STATE_OFF;
464 wl1251_disable_interrupts(wl);
466 mutex_unlock(&wl->mutex);
468 cancel_work_sync(&wl->irq_work);
469 cancel_work_sync(&wl->tx_work);
470 cancel_work_sync(&wl->filter_work);
472 mutex_lock(&wl->mutex);
474 /* let's notify MAC80211 about the remaining pending TX frames */
476 wl1251_power_off(wl);
478 memset(wl->bssid, 0, ETH_ALEN);
480 wl->bss_type = MAX_BSS_TYPE;
482 wl->data_in_count = 0;
485 wl->rx_current_buffer = 0;
487 wl->next_tx_complete = 0;
490 wl->tx_queue_stopped = false;
491 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
492 wl->channel = WL1251_DEFAULT_CHANNEL;
494 wl1251_debugfs_reset(wl);
496 mutex_unlock(&wl->mutex);
499 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
500 struct ieee80211_if_init_conf *conf)
502 struct wl1251 *wl = hw->priv;
505 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
506 conf->type, conf->mac_addr);
508 mutex_lock(&wl->mutex);
510 switch (conf->type) {
511 case NL80211_IFTYPE_STATION:
512 wl->bss_type = BSS_TYPE_STA_BSS;
514 case NL80211_IFTYPE_ADHOC:
515 wl->bss_type = BSS_TYPE_IBSS;
522 if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) {
523 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
524 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
525 ret = wl1251_acx_station_id(wl);
531 mutex_unlock(&wl->mutex);
535 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
536 struct ieee80211_if_init_conf *conf)
538 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
541 static int wl1251_build_null_data(struct wl1251 *wl)
543 struct wl12xx_null_data_template template;
545 if (!is_zero_ether_addr(wl->bssid)) {
546 memcpy(template.header.da, wl->bssid, ETH_ALEN);
547 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
549 memset(template.header.da, 0xff, ETH_ALEN);
550 memset(template.header.bssid, 0xff, ETH_ALEN);
553 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
554 template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
555 IEEE80211_STYPE_NULLFUNC);
557 return wl1251_cmd_template_set(wl, CMD_NULL_DATA, &template,
562 static int wl1251_build_ps_poll(struct wl1251 *wl, u16 aid)
564 struct wl12xx_ps_poll_template template;
566 memcpy(template.bssid, wl->bssid, ETH_ALEN);
567 memcpy(template.ta, wl->mac_addr, ETH_ALEN);
569 template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
571 return wl1251_cmd_template_set(wl, CMD_PS_POLL, &template,
576 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
578 struct wl1251 *wl = hw->priv;
579 struct ieee80211_conf *conf = &hw->conf;
580 int channel, ret = 0;
582 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
584 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
586 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
589 mutex_lock(&wl->mutex);
591 ret = wl1251_ps_elp_wakeup(wl);
595 if (channel != wl->channel) {
596 wl->channel = channel;
598 ret = wl1251_join(wl, wl->bss_type, wl->channel,
599 wl->beacon_int, wl->dtim_period);
604 ret = wl1251_build_null_data(wl);
608 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
609 wl1251_debug(DEBUG_PSM, "psm enabled");
611 wl->psm_requested = true;
614 * We enter PSM only if we're already associated.
615 * If we're not, we'll enter it when joining an SSID,
616 * through the bss_info_changed() hook.
618 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
619 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
621 wl1251_debug(DEBUG_PSM, "psm disabled");
623 wl->psm_requested = false;
626 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
629 if (conf->power_level != wl->power_level) {
630 ret = wl1251_acx_tx_power(wl, conf->power_level);
634 wl->power_level = conf->power_level;
638 wl1251_ps_elp_sleep(wl);
641 mutex_unlock(&wl->mutex);
646 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
649 FIF_BCN_PRBRESP_PROMISC | \
653 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
654 unsigned int changed,
655 unsigned int *total,u64 multicast)
657 struct wl1251 *wl = hw->priv;
659 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
661 *total &= WL1251_SUPPORTED_FILTERS;
662 changed &= WL1251_SUPPORTED_FILTERS;
665 /* no filters which we support changed */
668 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
670 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
671 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
673 if (*total & FIF_PROMISC_IN_BSS) {
674 wl->rx_config |= CFG_BSSID_FILTER_EN;
675 wl->rx_config |= CFG_RX_ALL_GOOD;
677 if (*total & FIF_ALLMULTI)
679 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
680 * all multicast frames
682 wl->rx_config &= ~CFG_MC_FILTER_EN;
683 if (*total & FIF_FCSFAIL)
684 wl->rx_filter |= CFG_RX_FCS_ERROR;
685 if (*total & FIF_BCN_PRBRESP_PROMISC) {
686 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
687 wl->rx_config &= ~CFG_SSID_FILTER_EN;
689 if (*total & FIF_CONTROL)
690 wl->rx_filter |= CFG_RX_CTL_EN;
691 if (*total & FIF_OTHER_BSS)
692 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
695 * FIXME: workqueues need to be properly cancelled on stop(), for
696 * now let's just disable changing the filter settings. They will
697 * be updated any on config().
699 /* schedule_work(&wl->filter_work); */
703 static int wl1251_set_key_type(struct wl1251 *wl,
704 struct wl1251_cmd_set_keys *key,
705 enum set_key_cmd cmd,
706 struct ieee80211_key_conf *mac80211_key,
709 switch (mac80211_key->alg) {
711 if (is_broadcast_ether_addr(addr))
712 key->key_type = KEY_WEP_DEFAULT;
714 key->key_type = KEY_WEP_ADDR;
716 mac80211_key->hw_key_idx = mac80211_key->keyidx;
719 if (is_broadcast_ether_addr(addr))
720 key->key_type = KEY_TKIP_MIC_GROUP;
722 key->key_type = KEY_TKIP_MIC_PAIRWISE;
724 mac80211_key->hw_key_idx = mac80211_key->keyidx;
727 if (is_broadcast_ether_addr(addr))
728 key->key_type = KEY_AES_GROUP;
730 key->key_type = KEY_AES_PAIRWISE;
731 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
734 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
741 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
742 struct ieee80211_vif *vif,
743 struct ieee80211_sta *sta,
744 struct ieee80211_key_conf *key)
746 struct wl1251 *wl = hw->priv;
747 struct wl1251_cmd_set_keys *wl_cmd;
751 static const u8 bcast_addr[ETH_ALEN] =
752 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
754 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
756 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
762 addr = sta ? sta->addr : bcast_addr;
764 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
765 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
766 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
767 key->alg, key->keyidx, key->keylen, key->flags);
768 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
770 if (is_zero_ether_addr(addr)) {
771 /* We dont support TX only encryption */
776 mutex_lock(&wl->mutex);
778 ret = wl1251_ps_elp_wakeup(wl);
784 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
787 wl_cmd->key_action = KEY_REMOVE;
790 wl1251_error("Unsupported key cmd 0x%x", cmd);
794 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
796 wl1251_error("Set KEY type failed");
800 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
801 memcpy(wl_cmd->addr, addr, ETH_ALEN);
803 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
804 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
806 * We get the key in the following form:
807 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
808 * but the target is expecting:
809 * TKIP - RX MIC - TX MIC
811 memcpy(wl_cmd->key, key->key, 16);
812 memcpy(wl_cmd->key + 16, key->key + 24, 8);
813 memcpy(wl_cmd->key + 24, key->key + 16, 8);
816 memcpy(wl_cmd->key, key->key, key->keylen);
818 wl_cmd->key_size = key->keylen;
820 wl_cmd->id = key->keyidx;
821 wl_cmd->ssid_profile = 0;
823 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
825 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
827 wl1251_warning("could not set keys");
832 wl1251_ps_elp_sleep(wl);
835 mutex_unlock(&wl->mutex);
843 static int wl1251_build_basic_rates(char *rates)
847 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
848 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
849 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
850 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
855 static int wl1251_build_extended_rates(char *rates)
859 rates[index++] = IEEE80211_OFDM_RATE_6MB;
860 rates[index++] = IEEE80211_OFDM_RATE_9MB;
861 rates[index++] = IEEE80211_OFDM_RATE_12MB;
862 rates[index++] = IEEE80211_OFDM_RATE_18MB;
863 rates[index++] = IEEE80211_OFDM_RATE_24MB;
864 rates[index++] = IEEE80211_OFDM_RATE_36MB;
865 rates[index++] = IEEE80211_OFDM_RATE_48MB;
866 rates[index++] = IEEE80211_OFDM_RATE_54MB;
872 static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
874 struct wl12xx_probe_req_template template;
875 struct wl12xx_ie_rates *rates;
879 ptr = (char *)&template;
880 size = sizeof(struct ieee80211_header);
882 memset(template.header.da, 0xff, ETH_ALEN);
883 memset(template.header.bssid, 0xff, ETH_ALEN);
884 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
885 template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
889 template.ssid.header.id = WLAN_EID_SSID;
890 template.ssid.header.len = ssid_len;
891 if (ssid_len && ssid)
892 memcpy(template.ssid.ssid, ssid, ssid_len);
893 size += sizeof(struct wl12xx_ie_header) + ssid_len;
897 rates = (struct wl12xx_ie_rates *)ptr;
898 rates->header.id = WLAN_EID_SUPP_RATES;
899 rates->header.len = wl1251_build_basic_rates(rates->rates);
900 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
901 ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
904 rates = (struct wl12xx_ie_rates *)ptr;
905 rates->header.id = WLAN_EID_EXT_SUPP_RATES;
906 rates->header.len = wl1251_build_extended_rates(rates->rates);
907 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
909 wl1251_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
911 return wl1251_cmd_template_set(wl, CMD_PROBE_REQ, &template,
915 static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len,
916 u8 active_scan, u8 high_prio, u8 num_channels,
919 struct wl1251_cmd_trigger_scan_to *trigger = NULL;
920 struct cmd_scan *params = NULL;
922 u16 scan_options = 0;
927 params = kzalloc(sizeof(*params), GFP_KERNEL);
931 params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
932 params->params.rx_filter_options =
933 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
935 /* High priority scan */
937 scan_options |= SCAN_PASSIVE;
939 scan_options |= SCAN_PRIORITY_HIGH;
940 params->params.scan_options = scan_options;
942 params->params.num_channels = num_channels;
943 params->params.num_probe_requests = probe_requests;
944 params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
945 params->params.tid_trigger = 0;
947 for (i = 0; i < num_channels; i++) {
948 params->channels[i].min_duration = cpu_to_le32(30000);
949 params->channels[i].max_duration = cpu_to_le32(60000);
950 memset(¶ms->channels[i].bssid_lsb, 0xff, 4);
951 memset(¶ms->channels[i].bssid_msb, 0xff, 2);
952 params->channels[i].early_termination = 0;
953 params->channels[i].tx_power_att = 0;
954 params->channels[i].channel = i + 1;
955 memset(params->channels[i].pad, 0, 3);
958 for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
959 memset(¶ms->channels[i], 0,
960 sizeof(struct basic_scan_channel_parameters));
963 params->params.ssid_len = len;
964 memcpy(params->params.ssid, ssid, len);
966 params->params.ssid_len = 0;
967 memset(params->params.ssid, 0, 32);
970 ret = wl1251_build_probe_req(wl, ssid, len);
972 wl1251_error("PROBE request template failed");
976 trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
980 trigger->timeout = 0;
982 ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
985 wl1251_error("trigger scan to failed for hw scan");
989 wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
993 ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
995 wl1251_error("SCAN failed");
997 wl1251_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
999 if (params->header.status != CMD_STATUS_SUCCESS) {
1000 wl1251_error("TEST command answer error: %d",
1001 params->header.status);
1002 wl->scanning = false;
1013 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
1014 struct cfg80211_scan_request *req)
1016 struct wl1251 *wl = hw->priv;
1019 size_t ssid_len = 0;
1021 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
1024 ssid = req->ssids[0].ssid;
1025 ssid_len = req->ssids[0].ssid_len;
1028 mutex_lock(&wl->mutex);
1030 ret = wl1251_ps_elp_wakeup(wl);
1034 ret = wl1251_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
1036 wl1251_ps_elp_sleep(wl);
1039 mutex_unlock(&wl->mutex);
1044 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1046 struct wl1251 *wl = hw->priv;
1049 mutex_lock(&wl->mutex);
1051 ret = wl1251_ps_elp_wakeup(wl);
1055 ret = wl1251_acx_rts_threshold(wl, (u16) value);
1057 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1059 wl1251_ps_elp_sleep(wl);
1062 mutex_unlock(&wl->mutex);
1067 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1068 struct ieee80211_vif *vif,
1069 struct ieee80211_bss_conf *bss_conf,
1072 enum wl1251_cmd_ps_mode mode;
1073 struct wl1251 *wl = hw->priv;
1074 struct sk_buff *beacon;
1077 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1079 mutex_lock(&wl->mutex);
1081 ret = wl1251_ps_elp_wakeup(wl);
1085 if (changed & BSS_CHANGED_ASSOC) {
1086 if (bss_conf->assoc) {
1087 wl->beacon_int = bss_conf->beacon_int;
1088 wl->dtim_period = bss_conf->dtim_period;
1090 /* FIXME: call join */
1092 wl->aid = bss_conf->aid;
1094 ret = wl1251_build_ps_poll(wl, wl->aid);
1098 ret = wl1251_acx_aid(wl, wl->aid);
1102 /* If we want to go in PSM but we're not there yet */
1103 if (wl->psm_requested && !wl->psm) {
1104 mode = STATION_POWER_SAVE_MODE;
1105 ret = wl1251_ps_set_mode(wl, mode);
1110 /* use defaults when not associated */
1111 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1112 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1115 if (changed & BSS_CHANGED_ERP_SLOT) {
1116 if (bss_conf->use_short_slot)
1117 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1119 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1121 wl1251_warning("Set slot time failed %d", ret);
1126 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1127 if (bss_conf->use_short_preamble)
1128 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1130 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1133 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1134 if (bss_conf->use_cts_prot)
1135 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1137 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1139 wl1251_warning("Set ctsprotect failed %d", ret);
1144 if (changed & BSS_CHANGED_BSSID) {
1145 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1147 ret = wl1251_build_null_data(wl);
1151 if (wl->bss_type != BSS_TYPE_IBSS) {
1152 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1153 wl->beacon_int, wl->dtim_period);
1156 wl1251_warning("Set ctsprotect failed %d", ret);
1161 if (changed & BSS_CHANGED_BEACON) {
1162 beacon = ieee80211_beacon_get(hw, vif);
1163 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1167 dev_kfree_skb(beacon);
1171 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1174 dev_kfree_skb(beacon);
1179 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1180 wl->channel, wl->dtim_period);
1187 wl1251_ps_elp_sleep(wl);
1190 mutex_unlock(&wl->mutex);
1194 /* can't be const, mac80211 writes to this */
1195 static struct ieee80211_rate wl1251_rates[] = {
1198 .hw_value_short = 0x1, },
1201 .hw_value_short = 0x2,
1202 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1205 .hw_value_short = 0x4,
1206 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1209 .hw_value_short = 0x20,
1210 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1213 .hw_value_short = 0x8, },
1216 .hw_value_short = 0x10, },
1219 .hw_value_short = 0x40, },
1222 .hw_value_short = 0x80, },
1225 .hw_value_short = 0x200, },
1228 .hw_value_short = 0x400, },
1231 .hw_value_short = 0x800, },
1234 .hw_value_short = 0x1000, },
1237 /* can't be const, mac80211 writes to this */
1238 static struct ieee80211_channel wl1251_channels[] = {
1239 { .hw_value = 1, .center_freq = 2412},
1240 { .hw_value = 2, .center_freq = 2417},
1241 { .hw_value = 3, .center_freq = 2422},
1242 { .hw_value = 4, .center_freq = 2427},
1243 { .hw_value = 5, .center_freq = 2432},
1244 { .hw_value = 6, .center_freq = 2437},
1245 { .hw_value = 7, .center_freq = 2442},
1246 { .hw_value = 8, .center_freq = 2447},
1247 { .hw_value = 9, .center_freq = 2452},
1248 { .hw_value = 10, .center_freq = 2457},
1249 { .hw_value = 11, .center_freq = 2462},
1250 { .hw_value = 12, .center_freq = 2467},
1251 { .hw_value = 13, .center_freq = 2472},
1254 /* can't be const, mac80211 writes to this */
1255 static struct ieee80211_supported_band wl1251_band_2ghz = {
1256 .channels = wl1251_channels,
1257 .n_channels = ARRAY_SIZE(wl1251_channels),
1258 .bitrates = wl1251_rates,
1259 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1262 static const struct ieee80211_ops wl1251_ops = {
1263 .start = wl1251_op_start,
1264 .stop = wl1251_op_stop,
1265 .add_interface = wl1251_op_add_interface,
1266 .remove_interface = wl1251_op_remove_interface,
1267 .config = wl1251_op_config,
1268 .configure_filter = wl1251_op_configure_filter,
1270 .set_key = wl1251_op_set_key,
1271 .hw_scan = wl1251_op_hw_scan,
1272 .bss_info_changed = wl1251_op_bss_info_changed,
1273 .set_rts_threshold = wl1251_op_set_rts_threshold,
1276 static int wl1251_register_hw(struct wl1251 *wl)
1280 if (wl->mac80211_registered)
1283 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1285 ret = ieee80211_register_hw(wl->hw);
1287 wl1251_error("unable to register mac80211 hw: %d", ret);
1291 wl->mac80211_registered = true;
1293 wl1251_notice("loaded");
1298 int wl1251_init_ieee80211(struct wl1251 *wl)
1302 /* The tx descriptor buffer and the TKIP space */
1303 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1304 + WL1251_TKIP_IV_SPACE;
1307 /* FIXME: find a proper value */
1308 wl->hw->channel_change_time = 10000;
1310 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1311 IEEE80211_HW_NOISE_DBM;
1313 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1314 wl->hw->wiphy->max_scan_ssids = 1;
1315 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1317 ret = wl1251_register_hw(wl);
1321 wl1251_debugfs_init(wl);
1322 wl1251_notice("initialized");
1329 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1331 struct ieee80211_hw *wl1251_alloc_hw(void)
1333 struct ieee80211_hw *hw;
1336 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1338 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1340 wl1251_error("could not alloc ieee80211_hw");
1341 return ERR_PTR(-ENOMEM);
1345 memset(wl, 0, sizeof(*wl));
1349 wl->data_in_count = 0;
1351 skb_queue_head_init(&wl->tx_queue);
1353 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1354 wl->channel = WL1251_DEFAULT_CHANNEL;
1355 wl->scanning = false;
1356 wl->default_key = 0;
1360 wl->rx_current_buffer = 0;
1362 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1363 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1366 wl->psm_requested = false;
1367 wl->tx_queue_stopped = false;
1368 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1369 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1370 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1372 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1373 wl->tx_frames[i] = NULL;
1375 wl->next_tx_complete = 0;
1377 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1378 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1381 * In case our MAC address is not correctly set,
1382 * we use a random but Nokia MAC.
1384 memcpy(wl->mac_addr, nokia_oui, 3);
1385 get_random_bytes(wl->mac_addr + 3, 3);
1387 wl->state = WL1251_STATE_OFF;
1388 mutex_init(&wl->mutex);
1390 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1391 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1393 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1394 if (!wl->rx_descriptor) {
1395 wl1251_error("could not allocate memory for rx descriptor");
1396 ieee80211_free_hw(hw);
1397 return ERR_PTR(-ENOMEM);
1402 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1404 int wl1251_free_hw(struct wl1251 *wl)
1406 ieee80211_unregister_hw(wl->hw);
1408 wl1251_debugfs_exit(wl);
1410 kfree(wl->target_mem_map);
1411 kfree(wl->data_path);
1417 kfree(wl->rx_descriptor);
1418 wl->rx_descriptor = NULL;
1420 ieee80211_free_hw(wl->hw);
1424 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1426 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1427 MODULE_LICENSE("GPL");
1428 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1429 MODULE_ALIAS("spi:wl12xx");