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 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_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");
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 * Join command applies filters, and if we are not associated,
339 * BSSID filter must be disabled for association to work.
341 if (is_zero_ether_addr(wl->bssid))
342 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
344 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
349 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
351 wl1251_warning("join timeout");
357 static void wl1251_op_tx(struct ieee80211_hw *hw,
358 struct ieee80211_tx_control *control,
361 struct wl1251 *wl = hw->priv;
364 skb_queue_tail(&wl->tx_queue, skb);
367 * The chip specific setup must run before the first TX packet -
368 * before that, the tx_work will not be initialized!
371 ieee80211_queue_work(wl->hw, &wl->tx_work);
374 * The workqueue is slow to process the tx_queue and we need stop
375 * the queue here, otherwise the queue will get too long.
377 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
378 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
380 spin_lock_irqsave(&wl->wl_lock, flags);
381 ieee80211_stop_queues(wl->hw);
382 wl->tx_queue_stopped = true;
383 spin_unlock_irqrestore(&wl->wl_lock, flags);
387 static int wl1251_op_start(struct ieee80211_hw *hw)
389 struct wl1251 *wl = hw->priv;
390 struct wiphy *wiphy = hw->wiphy;
393 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
395 mutex_lock(&wl->mutex);
397 if (wl->state != WL1251_STATE_OFF) {
398 wl1251_error("cannot start because not in off state: %d",
404 ret = wl1251_chip_wakeup(wl);
408 ret = wl1251_boot(wl);
412 ret = wl1251_hw_init(wl);
416 ret = wl1251_acx_station_id(wl);
420 wl->state = WL1251_STATE_ON;
422 wl1251_info("firmware booted (%s)", wl->fw_ver);
424 /* update hw/fw version info in wiphy struct */
425 wiphy->hw_version = wl->chip_id;
426 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
430 wl1251_power_off(wl);
432 mutex_unlock(&wl->mutex);
437 static void wl1251_op_stop(struct ieee80211_hw *hw)
439 struct wl1251 *wl = hw->priv;
443 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
445 mutex_lock(&wl->mutex);
447 WARN_ON(wl->state != WL1251_STATE_ON);
450 ieee80211_scan_completed(wl->hw, true);
451 wl->scanning = false;
454 wl->state = WL1251_STATE_OFF;
456 wl1251_disable_interrupts(wl);
458 mutex_unlock(&wl->mutex);
460 cancel_work_sync(&wl->irq_work);
461 cancel_work_sync(&wl->tx_work);
462 cancel_delayed_work_sync(&wl->elp_work);
464 mutex_lock(&wl->mutex);
466 /* let's notify MAC80211 about the remaining pending TX frames */
468 wl1251_power_off(wl);
470 memset(wl->bssid, 0, ETH_ALEN);
472 wl->bss_type = MAX_BSS_TYPE;
474 wl->data_in_count = 0;
477 wl->rx_current_buffer = 0;
479 wl->next_tx_complete = 0;
481 wl->station_mode = STATION_ACTIVE_MODE;
482 wl->tx_queue_stopped = false;
483 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
485 wl->channel = WL1251_DEFAULT_CHANNEL;
487 wl1251_debugfs_reset(wl);
489 mutex_unlock(&wl->mutex);
492 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
493 struct ieee80211_vif *vif)
495 struct wl1251 *wl = hw->priv;
498 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
499 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
501 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
502 vif->type, vif->addr);
504 mutex_lock(&wl->mutex);
513 case NL80211_IFTYPE_STATION:
514 wl->bss_type = BSS_TYPE_STA_BSS;
516 case NL80211_IFTYPE_ADHOC:
517 wl->bss_type = BSS_TYPE_IBSS;
524 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
525 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
526 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
527 ret = wl1251_acx_station_id(wl);
533 mutex_unlock(&wl->mutex);
537 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
538 struct ieee80211_vif *vif)
540 struct wl1251 *wl = hw->priv;
542 mutex_lock(&wl->mutex);
543 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
545 mutex_unlock(&wl->mutex);
548 static int wl1251_build_qos_null_data(struct wl1251 *wl)
550 struct ieee80211_qos_hdr template;
552 memset(&template, 0, sizeof(template));
554 memcpy(template.addr1, wl->bssid, ETH_ALEN);
555 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
556 memcpy(template.addr3, wl->bssid, ETH_ALEN);
558 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
559 IEEE80211_STYPE_QOS_NULLFUNC |
560 IEEE80211_FCTL_TODS);
562 /* FIXME: not sure what priority to use here */
563 template.qos_ctrl = cpu_to_le16(0);
565 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
569 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
571 struct wl1251 *wl = hw->priv;
572 struct ieee80211_conf *conf = &hw->conf;
573 int channel, ret = 0;
575 channel = ieee80211_frequency_to_channel(
576 conf->chandef.chan->center_freq);
578 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
580 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
583 mutex_lock(&wl->mutex);
585 ret = wl1251_ps_elp_wakeup(wl);
589 if (channel != wl->channel) {
590 wl->channel = channel;
592 ret = wl1251_join(wl, wl->bss_type, wl->channel,
593 wl->beacon_int, wl->dtim_period);
598 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
599 wl1251_debug(DEBUG_PSM, "psm enabled");
601 wl->psm_requested = true;
603 wl->dtim_period = conf->ps_dtim_period;
605 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
609 * mac80211 enables PSM only if we're already associated.
611 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
614 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
616 wl1251_debug(DEBUG_PSM, "psm disabled");
618 wl->psm_requested = false;
620 if (wl->station_mode != STATION_ACTIVE_MODE) {
621 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
627 if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) {
628 if (conf->flags & IEEE80211_CONF_IDLE) {
629 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
633 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
636 ret = wl1251_join(wl, wl->bss_type, wl->channel,
637 wl->beacon_int, wl->dtim_period);
643 if (conf->power_level != wl->power_level) {
644 ret = wl1251_acx_tx_power(wl, conf->power_level);
648 wl->power_level = conf->power_level;
652 wl1251_ps_elp_sleep(wl);
655 mutex_unlock(&wl->mutex);
660 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
663 FIF_BCN_PRBRESP_PROMISC | \
668 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
669 unsigned int changed,
670 unsigned int *total,u64 multicast)
672 struct wl1251 *wl = hw->priv;
675 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
677 *total &= WL1251_SUPPORTED_FILTERS;
678 changed &= WL1251_SUPPORTED_FILTERS;
681 /* no filters which we support changed */
684 mutex_lock(&wl->mutex);
686 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
687 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
689 if (*total & FIF_PROMISC_IN_BSS) {
690 wl->rx_config |= CFG_BSSID_FILTER_EN;
691 wl->rx_config |= CFG_RX_ALL_GOOD;
693 if (*total & FIF_ALLMULTI)
695 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
696 * all multicast frames
698 wl->rx_config &= ~CFG_MC_FILTER_EN;
699 if (*total & FIF_FCSFAIL)
700 wl->rx_filter |= CFG_RX_FCS_ERROR;
701 if (*total & FIF_BCN_PRBRESP_PROMISC) {
702 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
703 wl->rx_config &= ~CFG_SSID_FILTER_EN;
705 if (*total & FIF_CONTROL)
706 wl->rx_filter |= CFG_RX_CTL_EN;
707 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid))
708 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
709 if (*total & FIF_PROBE_REQ)
710 wl->rx_filter |= CFG_RX_PREQ_EN;
712 if (wl->state == WL1251_STATE_OFF)
715 ret = wl1251_ps_elp_wakeup(wl);
719 /* send filters to firmware */
720 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
722 wl1251_ps_elp_sleep(wl);
725 mutex_unlock(&wl->mutex);
729 static int wl1251_set_key_type(struct wl1251 *wl,
730 struct wl1251_cmd_set_keys *key,
731 enum set_key_cmd cmd,
732 struct ieee80211_key_conf *mac80211_key,
735 switch (mac80211_key->cipher) {
736 case WLAN_CIPHER_SUITE_WEP40:
737 case WLAN_CIPHER_SUITE_WEP104:
738 if (is_broadcast_ether_addr(addr))
739 key->key_type = KEY_WEP_DEFAULT;
741 key->key_type = KEY_WEP_ADDR;
743 mac80211_key->hw_key_idx = mac80211_key->keyidx;
745 case WLAN_CIPHER_SUITE_TKIP:
746 if (is_broadcast_ether_addr(addr))
747 key->key_type = KEY_TKIP_MIC_GROUP;
749 key->key_type = KEY_TKIP_MIC_PAIRWISE;
751 mac80211_key->hw_key_idx = mac80211_key->keyidx;
753 case WLAN_CIPHER_SUITE_CCMP:
754 if (is_broadcast_ether_addr(addr))
755 key->key_type = KEY_AES_GROUP;
757 key->key_type = KEY_AES_PAIRWISE;
758 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
761 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
768 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
769 struct ieee80211_vif *vif,
770 struct ieee80211_sta *sta,
771 struct ieee80211_key_conf *key)
773 struct wl1251 *wl = hw->priv;
774 struct wl1251_cmd_set_keys *wl_cmd;
778 static const u8 bcast_addr[ETH_ALEN] =
779 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
781 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
783 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
789 addr = sta ? sta->addr : bcast_addr;
791 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
792 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
793 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
794 key->cipher, key->keyidx, key->keylen, key->flags);
795 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
797 if (is_zero_ether_addr(addr)) {
798 /* We dont support TX only encryption */
803 mutex_lock(&wl->mutex);
805 ret = wl1251_ps_elp_wakeup(wl);
811 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
814 wl_cmd->key_action = KEY_REMOVE;
817 wl1251_error("Unsupported key cmd 0x%x", cmd);
821 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
823 wl1251_error("Set KEY type failed");
827 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
828 memcpy(wl_cmd->addr, addr, ETH_ALEN);
830 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
831 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
833 * We get the key in the following form:
834 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
835 * but the target is expecting:
836 * TKIP - RX MIC - TX MIC
838 memcpy(wl_cmd->key, key->key, 16);
839 memcpy(wl_cmd->key + 16, key->key + 24, 8);
840 memcpy(wl_cmd->key + 24, key->key + 16, 8);
843 memcpy(wl_cmd->key, key->key, key->keylen);
845 wl_cmd->key_size = key->keylen;
847 wl_cmd->id = key->keyidx;
848 wl_cmd->ssid_profile = 0;
850 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
852 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
854 wl1251_warning("could not set keys");
859 wl1251_ps_elp_sleep(wl);
862 mutex_unlock(&wl->mutex);
870 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
871 struct ieee80211_vif *vif,
872 struct cfg80211_scan_request *req)
874 struct wl1251 *wl = hw->priv;
880 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
883 ssid = req->ssids[0].ssid;
884 ssid_len = req->ssids[0].ssid_len;
887 mutex_lock(&wl->mutex);
890 wl1251_debug(DEBUG_SCAN, "scan already in progress");
895 ret = wl1251_ps_elp_wakeup(wl);
899 if (hw->conf.flags & IEEE80211_CONF_IDLE) {
900 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
903 ret = wl1251_join(wl, wl->bss_type, wl->channel,
904 wl->beacon_int, wl->dtim_period);
909 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
916 memcpy(skb_put(skb, req->ie_len), req->ie, req->ie_len);
918 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
924 ret = wl1251_cmd_trigger_scan_to(wl, 0);
930 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
931 req->n_channels, WL1251_SCAN_NUM_PROBES);
933 wl->scanning = false;
939 if (hw->conf.flags & IEEE80211_CONF_IDLE)
940 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
942 wl1251_ps_elp_sleep(wl);
945 mutex_unlock(&wl->mutex);
950 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
952 struct wl1251 *wl = hw->priv;
955 mutex_lock(&wl->mutex);
957 ret = wl1251_ps_elp_wakeup(wl);
961 ret = wl1251_acx_rts_threshold(wl, (u16) value);
963 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
965 wl1251_ps_elp_sleep(wl);
968 mutex_unlock(&wl->mutex);
973 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
974 struct ieee80211_vif *vif,
975 struct ieee80211_bss_conf *bss_conf,
978 struct wl1251 *wl = hw->priv;
979 struct sk_buff *beacon, *skb;
982 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
984 mutex_lock(&wl->mutex);
986 ret = wl1251_ps_elp_wakeup(wl);
990 if (changed & BSS_CHANGED_CQM) {
991 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
992 WL1251_DEFAULT_LOW_RSSI_WEIGHT,
993 WL1251_DEFAULT_LOW_RSSI_DEPTH,
994 WL1251_ACX_LOW_RSSI_TYPE_EDGE);
997 wl->rssi_thold = bss_conf->cqm_rssi_thold;
1000 if (changed & BSS_CHANGED_BSSID) {
1001 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1003 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
1007 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
1008 skb->data, skb->len);
1013 ret = wl1251_build_qos_null_data(wl);
1017 if (wl->bss_type != BSS_TYPE_IBSS) {
1018 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1019 wl->beacon_int, wl->dtim_period);
1025 if (changed & BSS_CHANGED_ASSOC) {
1026 if (bss_conf->assoc) {
1027 wl->beacon_int = bss_conf->beacon_int;
1029 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1033 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1040 ret = wl1251_acx_aid(wl, bss_conf->aid);
1044 /* use defaults when not associated */
1045 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1046 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1049 if (changed & BSS_CHANGED_ERP_SLOT) {
1050 if (bss_conf->use_short_slot)
1051 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1053 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1055 wl1251_warning("Set slot time failed %d", ret);
1060 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1061 if (bss_conf->use_short_preamble)
1062 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1064 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1067 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1068 if (bss_conf->use_cts_prot)
1069 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1071 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1073 wl1251_warning("Set ctsprotect failed %d", ret);
1078 if (changed & BSS_CHANGED_BEACON) {
1079 beacon = ieee80211_beacon_get(hw, vif);
1083 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1087 dev_kfree_skb(beacon);
1091 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1094 dev_kfree_skb(beacon);
1099 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1100 wl->channel, wl->dtim_period);
1107 wl1251_ps_elp_sleep(wl);
1110 mutex_unlock(&wl->mutex);
1114 /* can't be const, mac80211 writes to this */
1115 static struct ieee80211_rate wl1251_rates[] = {
1118 .hw_value_short = 0x1, },
1121 .hw_value_short = 0x2,
1122 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1125 .hw_value_short = 0x4,
1126 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1129 .hw_value_short = 0x20,
1130 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1133 .hw_value_short = 0x8, },
1136 .hw_value_short = 0x10, },
1139 .hw_value_short = 0x40, },
1142 .hw_value_short = 0x80, },
1145 .hw_value_short = 0x200, },
1148 .hw_value_short = 0x400, },
1151 .hw_value_short = 0x800, },
1154 .hw_value_short = 0x1000, },
1157 /* can't be const, mac80211 writes to this */
1158 static struct ieee80211_channel wl1251_channels[] = {
1159 { .hw_value = 1, .center_freq = 2412},
1160 { .hw_value = 2, .center_freq = 2417},
1161 { .hw_value = 3, .center_freq = 2422},
1162 { .hw_value = 4, .center_freq = 2427},
1163 { .hw_value = 5, .center_freq = 2432},
1164 { .hw_value = 6, .center_freq = 2437},
1165 { .hw_value = 7, .center_freq = 2442},
1166 { .hw_value = 8, .center_freq = 2447},
1167 { .hw_value = 9, .center_freq = 2452},
1168 { .hw_value = 10, .center_freq = 2457},
1169 { .hw_value = 11, .center_freq = 2462},
1170 { .hw_value = 12, .center_freq = 2467},
1171 { .hw_value = 13, .center_freq = 2472},
1174 static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
1175 struct ieee80211_vif *vif, u16 queue,
1176 const struct ieee80211_tx_queue_params *params)
1178 enum wl1251_acx_ps_scheme ps_scheme;
1179 struct wl1251 *wl = hw->priv;
1182 mutex_lock(&wl->mutex);
1184 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1186 ret = wl1251_ps_elp_wakeup(wl);
1190 /* mac80211 uses units of 32 usec */
1191 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1192 params->cw_min, params->cw_max,
1193 params->aifs, params->txop * 32);
1198 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1200 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1202 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1204 wl1251_tx_get_queue(queue), ps_scheme,
1205 WL1251_ACX_ACK_POLICY_LEGACY);
1210 wl1251_ps_elp_sleep(wl);
1213 mutex_unlock(&wl->mutex);
1218 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1219 struct survey_info *survey)
1221 struct wl1251 *wl = hw->priv;
1222 struct ieee80211_conf *conf = &hw->conf;
1227 survey->channel = conf->chandef.chan;
1228 survey->filled = SURVEY_INFO_NOISE_DBM;
1229 survey->noise = wl->noise;
1234 /* can't be const, mac80211 writes to this */
1235 static struct ieee80211_supported_band wl1251_band_2ghz = {
1236 .channels = wl1251_channels,
1237 .n_channels = ARRAY_SIZE(wl1251_channels),
1238 .bitrates = wl1251_rates,
1239 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1242 static const struct ieee80211_ops wl1251_ops = {
1243 .start = wl1251_op_start,
1244 .stop = wl1251_op_stop,
1245 .add_interface = wl1251_op_add_interface,
1246 .remove_interface = wl1251_op_remove_interface,
1247 .config = wl1251_op_config,
1248 .configure_filter = wl1251_op_configure_filter,
1250 .set_key = wl1251_op_set_key,
1251 .hw_scan = wl1251_op_hw_scan,
1252 .bss_info_changed = wl1251_op_bss_info_changed,
1253 .set_rts_threshold = wl1251_op_set_rts_threshold,
1254 .conf_tx = wl1251_op_conf_tx,
1255 .get_survey = wl1251_op_get_survey,
1258 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1260 unsigned long timeout;
1262 wl1251_reg_write32(wl, EE_ADDR, offset);
1263 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1265 /* EE_CTL_READ clears when data is ready */
1266 timeout = jiffies + msecs_to_jiffies(100);
1268 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1271 if (time_after(jiffies, timeout))
1277 *data = wl1251_reg_read32(wl, EE_DATA);
1281 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1282 u8 *data, size_t len)
1287 wl1251_reg_write32(wl, EE_START, 0);
1289 for (i = 0; i < len; i++) {
1290 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1298 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1303 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1305 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1307 wl1251_warning("failed to read MAC address from EEPROM");
1311 /* MAC is stored in reverse order */
1312 for (i = 0; i < ETH_ALEN; i++)
1313 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1318 static int wl1251_register_hw(struct wl1251 *wl)
1322 if (wl->mac80211_registered)
1325 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1327 ret = ieee80211_register_hw(wl->hw);
1329 wl1251_error("unable to register mac80211 hw: %d", ret);
1333 wl->mac80211_registered = true;
1335 wl1251_notice("loaded");
1340 int wl1251_init_ieee80211(struct wl1251 *wl)
1344 /* The tx descriptor buffer and the TKIP space */
1345 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1346 + WL1251_TKIP_IV_SPACE;
1349 /* FIXME: find a proper value */
1350 wl->hw->channel_change_time = 10000;
1352 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1353 IEEE80211_HW_SUPPORTS_PS |
1354 IEEE80211_HW_SUPPORTS_UAPSD;
1356 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1357 BIT(NL80211_IFTYPE_ADHOC);
1358 wl->hw->wiphy->max_scan_ssids = 1;
1359 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1364 wl1251_read_eeprom_mac(wl);
1366 ret = wl1251_register_hw(wl);
1370 wl1251_debugfs_init(wl);
1371 wl1251_notice("initialized");
1378 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1380 struct ieee80211_hw *wl1251_alloc_hw(void)
1382 struct ieee80211_hw *hw;
1385 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1387 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1389 wl1251_error("could not alloc ieee80211_hw");
1390 return ERR_PTR(-ENOMEM);
1394 memset(wl, 0, sizeof(*wl));
1398 wl->data_in_count = 0;
1400 skb_queue_head_init(&wl->tx_queue);
1402 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1403 wl->channel = WL1251_DEFAULT_CHANNEL;
1404 wl->scanning = false;
1405 wl->default_key = 0;
1409 wl->rx_current_buffer = 0;
1411 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1412 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1414 wl->station_mode = STATION_ACTIVE_MODE;
1415 wl->psm_requested = false;
1416 wl->tx_queue_stopped = false;
1417 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1419 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1420 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1423 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1424 wl->tx_frames[i] = NULL;
1426 wl->next_tx_complete = 0;
1428 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1429 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1432 * In case our MAC address is not correctly set,
1433 * we use a random but Nokia MAC.
1435 memcpy(wl->mac_addr, nokia_oui, 3);
1436 get_random_bytes(wl->mac_addr + 3, 3);
1438 wl->state = WL1251_STATE_OFF;
1439 mutex_init(&wl->mutex);
1441 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1442 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1444 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1445 if (!wl->rx_descriptor) {
1446 wl1251_error("could not allocate memory for rx descriptor");
1447 ieee80211_free_hw(hw);
1448 return ERR_PTR(-ENOMEM);
1453 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1455 int wl1251_free_hw(struct wl1251 *wl)
1457 ieee80211_unregister_hw(wl->hw);
1459 wl1251_debugfs_exit(wl);
1461 kfree(wl->target_mem_map);
1462 kfree(wl->data_path);
1468 kfree(wl->rx_descriptor);
1469 wl->rx_descriptor = NULL;
1471 ieee80211_free_hw(wl->hw);
1475 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1477 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1478 MODULE_LICENSE("GPL");
1479 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1480 MODULE_FIRMWARE(WL1251_FW_NAME);