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>
32 #include <linux/slab.h>
35 #include "wl12xx_80211.h"
36 #include "wl1251_reg.h"
37 #include "wl1251_io.h"
38 #include "wl1251_cmd.h"
39 #include "wl1251_event.h"
40 #include "wl1251_tx.h"
41 #include "wl1251_rx.h"
42 #include "wl1251_ps.h"
43 #include "wl1251_init.h"
44 #include "wl1251_debugfs.h"
45 #include "wl1251_boot.h"
47 void wl1251_enable_interrupts(struct wl1251 *wl)
49 wl->if_ops->enable_irq(wl);
52 void wl1251_disable_interrupts(struct wl1251 *wl)
54 wl->if_ops->disable_irq(wl);
57 static void wl1251_power_off(struct wl1251 *wl)
62 static void wl1251_power_on(struct wl1251 *wl)
67 static int wl1251_fetch_firmware(struct wl1251 *wl)
69 const struct firmware *fw;
70 struct device *dev = wiphy_dev(wl->hw->wiphy);
73 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
76 wl1251_error("could not get firmware: %d", ret);
81 wl1251_error("firmware size is not multiple of 32 bits: %zu",
87 wl->fw_len = fw->size;
88 wl->fw = vmalloc(wl->fw_len);
91 wl1251_error("could not allocate memory for the firmware");
96 memcpy(wl->fw, fw->data, wl->fw_len);
101 release_firmware(fw);
106 static int wl1251_fetch_nvs(struct wl1251 *wl)
108 const struct firmware *fw;
109 struct device *dev = wiphy_dev(wl->hw->wiphy);
112 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
115 wl1251_error("could not get nvs file: %d", ret);
120 wl1251_error("nvs size is not multiple of 32 bits: %zu",
126 wl->nvs_len = fw->size;
127 wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
130 wl1251_error("could not allocate memory for the nvs file");
135 memcpy(wl->nvs, fw->data, wl->nvs_len);
140 release_firmware(fw);
145 static void wl1251_fw_wakeup(struct wl1251 *wl)
149 elp_reg = ELPCTRL_WAKE_UP;
150 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
151 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
153 if (!(elp_reg & ELPCTRL_WLAN_READY))
154 wl1251_warning("WLAN not ready");
157 static int wl1251_chip_wakeup(struct wl1251 *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 10
217 static void wl1251_irq_work(struct work_struct *work)
219 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
221 container_of(work, struct wl1251, irq_work);
224 mutex_lock(&wl->mutex);
226 wl1251_debug(DEBUG_IRQ, "IRQ work");
228 if (wl->state == WL1251_STATE_OFF)
231 ret = wl1251_ps_elp_wakeup(wl);
235 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
237 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
238 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
242 wl->rx_counter = wl1251_mem_read32(
243 wl, wl->data_path->rx_control_addr);
245 /* We handle a frmware bug here */
246 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
248 wl1251_debug(DEBUG_IRQ,
249 "RX: FW and host in sync");
250 intr &= ~WL1251_ACX_INTR_RX0_DATA;
251 intr &= ~WL1251_ACX_INTR_RX1_DATA;
254 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
255 intr |= WL1251_ACX_INTR_RX0_DATA;
256 intr &= ~WL1251_ACX_INTR_RX1_DATA;
259 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
260 intr |= WL1251_ACX_INTR_RX0_DATA;
261 intr |= WL1251_ACX_INTR_RX1_DATA;
265 "RX: FW and host out of sync: %d",
266 wl->rx_counter - wl->rx_handled);
270 wl->rx_handled = wl->rx_counter;
272 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
276 intr &= wl->intr_mask;
279 wl1251_debug(DEBUG_IRQ, "INTR is 0");
283 if (intr & WL1251_ACX_INTR_RX0_DATA) {
284 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
288 if (intr & WL1251_ACX_INTR_RX1_DATA) {
289 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
293 if (intr & WL1251_ACX_INTR_TX_RESULT) {
294 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
295 wl1251_tx_complete(wl);
298 if (intr & (WL1251_ACX_INTR_EVENT_A |
299 WL1251_ACX_INTR_EVENT_B)) {
300 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)",
302 if (intr & WL1251_ACX_INTR_EVENT_A)
303 wl1251_event_handle(wl, 0);
305 wl1251_event_handle(wl, 1);
308 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
309 wl1251_debug(DEBUG_IRQ,
310 "WL1251_ACX_INTR_INIT_COMPLETE");
315 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
319 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
320 wl1251_ps_elp_sleep(wl);
323 mutex_unlock(&wl->mutex);
326 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
327 u16 beacon_interval, u8 dtim_period)
331 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
332 DEFAULT_HW_GEN_MODULATION_TYPE,
333 wl->tx_mgmt_frm_rate,
334 wl->tx_mgmt_frm_mod);
339 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
345 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
346 * locking we just sleep instead, for now
354 static void wl1251_filter_work(struct work_struct *work)
357 container_of(work, struct wl1251, filter_work);
360 mutex_lock(&wl->mutex);
362 if (wl->state == WL1251_STATE_OFF)
365 ret = wl1251_ps_elp_wakeup(wl);
369 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
375 wl1251_ps_elp_sleep(wl);
378 mutex_unlock(&wl->mutex);
381 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
383 struct wl1251 *wl = hw->priv;
385 skb_queue_tail(&wl->tx_queue, skb);
388 * The chip specific setup must run before the first TX packet -
389 * before that, the tx_work will not be initialized!
392 ieee80211_queue_work(wl->hw, &wl->tx_work);
395 * The workqueue is slow to process the tx_queue and we need stop
396 * the queue here, otherwise the queue will get too long.
398 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
399 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
400 ieee80211_stop_queues(wl->hw);
403 * FIXME: this is racy, the variable is not properly
404 * protected. Maybe fix this by removing the stupid
405 * variable altogether and checking the real queue state?
407 wl->tx_queue_stopped = true;
413 static int wl1251_op_start(struct ieee80211_hw *hw)
415 struct wl1251 *wl = hw->priv;
418 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
420 mutex_lock(&wl->mutex);
422 if (wl->state != WL1251_STATE_OFF) {
423 wl1251_error("cannot start because not in off state: %d",
429 ret = wl1251_chip_wakeup(wl);
433 ret = wl1251_boot(wl);
437 ret = wl1251_hw_init(wl);
441 ret = wl1251_acx_station_id(wl);
445 wl->state = WL1251_STATE_ON;
447 wl1251_info("firmware booted (%s)", wl->fw_ver);
451 wl1251_power_off(wl);
453 mutex_unlock(&wl->mutex);
458 static void wl1251_op_stop(struct ieee80211_hw *hw)
460 struct wl1251 *wl = hw->priv;
464 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
466 mutex_lock(&wl->mutex);
468 WARN_ON(wl->state != WL1251_STATE_ON);
471 mutex_unlock(&wl->mutex);
472 ieee80211_scan_completed(wl->hw, true);
473 mutex_lock(&wl->mutex);
474 wl->scanning = false;
477 wl->state = WL1251_STATE_OFF;
479 wl1251_disable_interrupts(wl);
481 mutex_unlock(&wl->mutex);
483 cancel_work_sync(&wl->irq_work);
484 cancel_work_sync(&wl->tx_work);
485 cancel_work_sync(&wl->filter_work);
487 mutex_lock(&wl->mutex);
489 /* let's notify MAC80211 about the remaining pending TX frames */
491 wl1251_power_off(wl);
493 memset(wl->bssid, 0, ETH_ALEN);
495 wl->bss_type = MAX_BSS_TYPE;
497 wl->data_in_count = 0;
500 wl->rx_current_buffer = 0;
502 wl->next_tx_complete = 0;
505 wl->tx_queue_stopped = false;
506 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
507 wl->channel = WL1251_DEFAULT_CHANNEL;
509 wl1251_debugfs_reset(wl);
511 mutex_unlock(&wl->mutex);
514 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
515 struct ieee80211_vif *vif)
517 struct wl1251 *wl = hw->priv;
520 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
521 vif->type, vif->addr);
523 mutex_lock(&wl->mutex);
532 case NL80211_IFTYPE_STATION:
533 wl->bss_type = BSS_TYPE_STA_BSS;
535 case NL80211_IFTYPE_ADHOC:
536 wl->bss_type = BSS_TYPE_IBSS;
543 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
544 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
545 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
546 ret = wl1251_acx_station_id(wl);
552 mutex_unlock(&wl->mutex);
556 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
557 struct ieee80211_vif *vif)
559 struct wl1251 *wl = hw->priv;
561 mutex_lock(&wl->mutex);
562 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
564 mutex_unlock(&wl->mutex);
567 static int wl1251_build_qos_null_data(struct wl1251 *wl)
569 struct ieee80211_qos_hdr template;
571 memset(&template, 0, sizeof(template));
573 memcpy(template.addr1, wl->bssid, ETH_ALEN);
574 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
575 memcpy(template.addr3, wl->bssid, ETH_ALEN);
577 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
578 IEEE80211_STYPE_QOS_NULLFUNC |
579 IEEE80211_FCTL_TODS);
581 /* FIXME: not sure what priority to use here */
582 template.qos_ctrl = cpu_to_le16(0);
584 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
588 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
590 struct wl1251 *wl = hw->priv;
591 struct ieee80211_conf *conf = &hw->conf;
592 int channel, ret = 0;
594 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
596 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
598 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
601 mutex_lock(&wl->mutex);
603 ret = wl1251_ps_elp_wakeup(wl);
607 if (channel != wl->channel) {
608 wl->channel = channel;
610 ret = wl1251_join(wl, wl->bss_type, wl->channel,
611 wl->beacon_int, wl->dtim_period);
616 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
617 wl1251_debug(DEBUG_PSM, "psm enabled");
619 wl->psm_requested = true;
621 wl->dtim_period = conf->ps_dtim_period;
623 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
627 * mac80211 enables PSM only if we're already associated.
629 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
632 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
634 wl1251_debug(DEBUG_PSM, "psm disabled");
636 wl->psm_requested = false;
639 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
645 if (conf->power_level != wl->power_level) {
646 ret = wl1251_acx_tx_power(wl, conf->power_level);
650 wl->power_level = conf->power_level;
654 wl1251_ps_elp_sleep(wl);
657 mutex_unlock(&wl->mutex);
662 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
665 FIF_BCN_PRBRESP_PROMISC | \
669 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
670 unsigned int changed,
671 unsigned int *total,u64 multicast)
673 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 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
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)
708 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
711 * FIXME: workqueues need to be properly cancelled on stop(), for
712 * now let's just disable changing the filter settings. They will
713 * be updated any on config().
715 /* schedule_work(&wl->filter_work); */
719 static int wl1251_set_key_type(struct wl1251 *wl,
720 struct wl1251_cmd_set_keys *key,
721 enum set_key_cmd cmd,
722 struct ieee80211_key_conf *mac80211_key,
725 switch (mac80211_key->alg) {
727 if (is_broadcast_ether_addr(addr))
728 key->key_type = KEY_WEP_DEFAULT;
730 key->key_type = KEY_WEP_ADDR;
732 mac80211_key->hw_key_idx = mac80211_key->keyidx;
735 if (is_broadcast_ether_addr(addr))
736 key->key_type = KEY_TKIP_MIC_GROUP;
738 key->key_type = KEY_TKIP_MIC_PAIRWISE;
740 mac80211_key->hw_key_idx = mac80211_key->keyidx;
743 if (is_broadcast_ether_addr(addr))
744 key->key_type = KEY_AES_GROUP;
746 key->key_type = KEY_AES_PAIRWISE;
747 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
750 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
757 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
758 struct ieee80211_vif *vif,
759 struct ieee80211_sta *sta,
760 struct ieee80211_key_conf *key)
762 struct wl1251 *wl = hw->priv;
763 struct wl1251_cmd_set_keys *wl_cmd;
767 static const u8 bcast_addr[ETH_ALEN] =
768 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
770 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
772 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
778 addr = sta ? sta->addr : bcast_addr;
780 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
781 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
782 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
783 key->alg, key->keyidx, key->keylen, key->flags);
784 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
786 if (is_zero_ether_addr(addr)) {
787 /* We dont support TX only encryption */
792 mutex_lock(&wl->mutex);
794 ret = wl1251_ps_elp_wakeup(wl);
800 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
803 wl_cmd->key_action = KEY_REMOVE;
806 wl1251_error("Unsupported key cmd 0x%x", cmd);
810 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
812 wl1251_error("Set KEY type failed");
816 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
817 memcpy(wl_cmd->addr, addr, ETH_ALEN);
819 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
820 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
822 * We get the key in the following form:
823 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
824 * but the target is expecting:
825 * TKIP - RX MIC - TX MIC
827 memcpy(wl_cmd->key, key->key, 16);
828 memcpy(wl_cmd->key + 16, key->key + 24, 8);
829 memcpy(wl_cmd->key + 24, key->key + 16, 8);
832 memcpy(wl_cmd->key, key->key, key->keylen);
834 wl_cmd->key_size = key->keylen;
836 wl_cmd->id = key->keyidx;
837 wl_cmd->ssid_profile = 0;
839 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
841 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
843 wl1251_warning("could not set keys");
848 wl1251_ps_elp_sleep(wl);
851 mutex_unlock(&wl->mutex);
859 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
860 struct ieee80211_vif *vif,
861 struct cfg80211_scan_request *req)
863 struct wl1251 *wl = hw->priv;
869 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
872 ssid = req->ssids[0].ssid;
873 ssid_len = req->ssids[0].ssid_len;
876 mutex_lock(&wl->mutex);
879 wl1251_debug(DEBUG_SCAN, "scan already in progress");
884 ret = wl1251_ps_elp_wakeup(wl);
888 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
889 req->ie, req->ie_len);
895 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
901 ret = wl1251_cmd_trigger_scan_to(wl, 0);
907 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
908 req->n_channels, WL1251_SCAN_NUM_PROBES);
910 wl->scanning = false;
915 wl1251_ps_elp_sleep(wl);
918 mutex_unlock(&wl->mutex);
923 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
925 struct wl1251 *wl = hw->priv;
928 mutex_lock(&wl->mutex);
930 ret = wl1251_ps_elp_wakeup(wl);
934 ret = wl1251_acx_rts_threshold(wl, (u16) value);
936 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
938 wl1251_ps_elp_sleep(wl);
941 mutex_unlock(&wl->mutex);
946 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
947 struct ieee80211_vif *vif,
948 struct ieee80211_bss_conf *bss_conf,
951 struct wl1251 *wl = hw->priv;
952 struct sk_buff *beacon, *skb;
955 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
957 mutex_lock(&wl->mutex);
959 ret = wl1251_ps_elp_wakeup(wl);
963 if (changed & BSS_CHANGED_BSSID) {
964 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
966 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
970 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
971 skb->data, skb->len);
976 ret = wl1251_build_qos_null_data(wl);
980 if (wl->bss_type != BSS_TYPE_IBSS) {
981 ret = wl1251_join(wl, wl->bss_type, wl->channel,
982 wl->beacon_int, wl->dtim_period);
988 if (changed & BSS_CHANGED_ASSOC) {
989 if (bss_conf->assoc) {
990 wl->beacon_int = bss_conf->beacon_int;
992 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
996 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1003 ret = wl1251_acx_aid(wl, bss_conf->aid);
1007 /* use defaults when not associated */
1008 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1009 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1012 if (changed & BSS_CHANGED_ERP_SLOT) {
1013 if (bss_conf->use_short_slot)
1014 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1016 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1018 wl1251_warning("Set slot time failed %d", ret);
1023 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1024 if (bss_conf->use_short_preamble)
1025 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1027 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1030 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1031 if (bss_conf->use_cts_prot)
1032 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1034 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1036 wl1251_warning("Set ctsprotect failed %d", ret);
1041 if (changed & BSS_CHANGED_BEACON) {
1042 beacon = ieee80211_beacon_get(hw, vif);
1043 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1047 dev_kfree_skb(beacon);
1051 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1054 dev_kfree_skb(beacon);
1059 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1060 wl->channel, wl->dtim_period);
1067 wl1251_ps_elp_sleep(wl);
1070 mutex_unlock(&wl->mutex);
1074 /* can't be const, mac80211 writes to this */
1075 static struct ieee80211_rate wl1251_rates[] = {
1078 .hw_value_short = 0x1, },
1081 .hw_value_short = 0x2,
1082 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1085 .hw_value_short = 0x4,
1086 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1089 .hw_value_short = 0x20,
1090 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1093 .hw_value_short = 0x8, },
1096 .hw_value_short = 0x10, },
1099 .hw_value_short = 0x40, },
1102 .hw_value_short = 0x80, },
1105 .hw_value_short = 0x200, },
1108 .hw_value_short = 0x400, },
1111 .hw_value_short = 0x800, },
1114 .hw_value_short = 0x1000, },
1117 /* can't be const, mac80211 writes to this */
1118 static struct ieee80211_channel wl1251_channels[] = {
1119 { .hw_value = 1, .center_freq = 2412},
1120 { .hw_value = 2, .center_freq = 2417},
1121 { .hw_value = 3, .center_freq = 2422},
1122 { .hw_value = 4, .center_freq = 2427},
1123 { .hw_value = 5, .center_freq = 2432},
1124 { .hw_value = 6, .center_freq = 2437},
1125 { .hw_value = 7, .center_freq = 2442},
1126 { .hw_value = 8, .center_freq = 2447},
1127 { .hw_value = 9, .center_freq = 2452},
1128 { .hw_value = 10, .center_freq = 2457},
1129 { .hw_value = 11, .center_freq = 2462},
1130 { .hw_value = 12, .center_freq = 2467},
1131 { .hw_value = 13, .center_freq = 2472},
1134 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1135 const struct ieee80211_tx_queue_params *params)
1137 enum wl1251_acx_ps_scheme ps_scheme;
1138 struct wl1251 *wl = hw->priv;
1141 mutex_lock(&wl->mutex);
1143 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1145 ret = wl1251_ps_elp_wakeup(wl);
1149 /* mac80211 uses units of 32 usec */
1150 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1151 params->cw_min, params->cw_max,
1152 params->aifs, params->txop * 32);
1157 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1159 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1161 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1163 wl1251_tx_get_queue(queue), ps_scheme,
1164 WL1251_ACX_ACK_POLICY_LEGACY);
1169 wl1251_ps_elp_sleep(wl);
1172 mutex_unlock(&wl->mutex);
1177 /* can't be const, mac80211 writes to this */
1178 static struct ieee80211_supported_band wl1251_band_2ghz = {
1179 .channels = wl1251_channels,
1180 .n_channels = ARRAY_SIZE(wl1251_channels),
1181 .bitrates = wl1251_rates,
1182 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1185 static const struct ieee80211_ops wl1251_ops = {
1186 .start = wl1251_op_start,
1187 .stop = wl1251_op_stop,
1188 .add_interface = wl1251_op_add_interface,
1189 .remove_interface = wl1251_op_remove_interface,
1190 .config = wl1251_op_config,
1191 .configure_filter = wl1251_op_configure_filter,
1193 .set_key = wl1251_op_set_key,
1194 .hw_scan = wl1251_op_hw_scan,
1195 .bss_info_changed = wl1251_op_bss_info_changed,
1196 .set_rts_threshold = wl1251_op_set_rts_threshold,
1197 .conf_tx = wl1251_op_conf_tx,
1200 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1202 unsigned long timeout;
1204 wl1251_reg_write32(wl, EE_ADDR, offset);
1205 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1207 /* EE_CTL_READ clears when data is ready */
1208 timeout = jiffies + msecs_to_jiffies(100);
1210 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1213 if (time_after(jiffies, timeout))
1219 *data = wl1251_reg_read32(wl, EE_DATA);
1223 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1224 u8 *data, size_t len)
1229 wl1251_reg_write32(wl, EE_START, 0);
1231 for (i = 0; i < len; i++) {
1232 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1240 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1245 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1247 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1249 wl1251_warning("failed to read MAC address from EEPROM");
1253 /* MAC is stored in reverse order */
1254 for (i = 0; i < ETH_ALEN; i++)
1255 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1260 static int wl1251_register_hw(struct wl1251 *wl)
1264 if (wl->mac80211_registered)
1267 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1269 ret = ieee80211_register_hw(wl->hw);
1271 wl1251_error("unable to register mac80211 hw: %d", ret);
1275 wl->mac80211_registered = true;
1277 wl1251_notice("loaded");
1282 int wl1251_init_ieee80211(struct wl1251 *wl)
1286 /* The tx descriptor buffer and the TKIP space */
1287 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1288 + WL1251_TKIP_IV_SPACE;
1291 /* FIXME: find a proper value */
1292 wl->hw->channel_change_time = 10000;
1294 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1295 IEEE80211_HW_SUPPORTS_PS |
1296 IEEE80211_HW_BEACON_FILTER |
1297 IEEE80211_HW_SUPPORTS_UAPSD;
1299 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1300 wl->hw->wiphy->max_scan_ssids = 1;
1301 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1306 wl1251_read_eeprom_mac(wl);
1308 ret = wl1251_register_hw(wl);
1312 wl1251_debugfs_init(wl);
1313 wl1251_notice("initialized");
1320 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1322 struct ieee80211_hw *wl1251_alloc_hw(void)
1324 struct ieee80211_hw *hw;
1327 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1329 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1331 wl1251_error("could not alloc ieee80211_hw");
1332 return ERR_PTR(-ENOMEM);
1336 memset(wl, 0, sizeof(*wl));
1340 wl->data_in_count = 0;
1342 skb_queue_head_init(&wl->tx_queue);
1344 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1345 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1346 wl->channel = WL1251_DEFAULT_CHANNEL;
1347 wl->scanning = false;
1348 wl->default_key = 0;
1352 wl->rx_current_buffer = 0;
1354 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1355 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1358 wl->psm_requested = false;
1359 wl->tx_queue_stopped = false;
1360 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1361 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1362 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1365 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1366 wl->tx_frames[i] = NULL;
1368 wl->next_tx_complete = 0;
1370 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1371 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1374 * In case our MAC address is not correctly set,
1375 * we use a random but Nokia MAC.
1377 memcpy(wl->mac_addr, nokia_oui, 3);
1378 get_random_bytes(wl->mac_addr + 3, 3);
1380 wl->state = WL1251_STATE_OFF;
1381 mutex_init(&wl->mutex);
1383 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1384 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1386 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1387 if (!wl->rx_descriptor) {
1388 wl1251_error("could not allocate memory for rx descriptor");
1389 ieee80211_free_hw(hw);
1390 return ERR_PTR(-ENOMEM);
1395 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1397 int wl1251_free_hw(struct wl1251 *wl)
1399 ieee80211_unregister_hw(wl->hw);
1401 wl1251_debugfs_exit(wl);
1403 kfree(wl->target_mem_map);
1404 kfree(wl->data_path);
1410 kfree(wl->rx_descriptor);
1411 wl->rx_descriptor = NULL;
1413 ieee80211_free_hw(wl->hw);
1417 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1419 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1420 MODULE_LICENSE("GPL");
1421 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1422 MODULE_ALIAS("spi:wl1251");
1423 MODULE_FIRMWARE(WL1251_FW_NAME);