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 = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
130 wl1251_error("could not allocate memory for the nvs file");
138 release_firmware(fw);
143 static void wl1251_fw_wakeup(struct wl1251 *wl)
147 elp_reg = ELPCTRL_WAKE_UP;
148 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
149 elp_reg = wl1251_read_elp(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_PG11:
187 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
190 case CHIP_ID_1251_PG10:
192 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
197 if (wl->fw == NULL) {
198 ret = wl1251_fetch_firmware(wl);
203 if (wl->nvs == NULL && !wl->use_eeprom) {
204 /* No NVS from netlink, try to get it from the filesystem */
205 ret = wl1251_fetch_nvs(wl);
214 #define WL1251_IRQ_LOOP_COUNT 10
215 static void wl1251_irq_work(struct work_struct *work)
217 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
219 container_of(work, struct wl1251, irq_work);
222 mutex_lock(&wl->mutex);
224 wl1251_debug(DEBUG_IRQ, "IRQ work");
226 if (wl->state == WL1251_STATE_OFF)
229 ret = wl1251_ps_elp_wakeup(wl);
233 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
235 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
236 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
240 wl->rx_counter = wl1251_mem_read32(
241 wl, wl->data_path->rx_control_addr);
243 /* We handle a frmware bug here */
244 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
246 wl1251_debug(DEBUG_IRQ,
247 "RX: FW and host in sync");
248 intr &= ~WL1251_ACX_INTR_RX0_DATA;
249 intr &= ~WL1251_ACX_INTR_RX1_DATA;
252 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
253 intr |= WL1251_ACX_INTR_RX0_DATA;
254 intr &= ~WL1251_ACX_INTR_RX1_DATA;
257 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
258 intr |= WL1251_ACX_INTR_RX0_DATA;
259 intr |= WL1251_ACX_INTR_RX1_DATA;
263 "RX: FW and host out of sync: %d",
264 wl->rx_counter - wl->rx_handled);
268 wl->rx_handled = wl->rx_counter;
270 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
274 intr &= wl->intr_mask;
277 wl1251_debug(DEBUG_IRQ, "INTR is 0");
281 if (intr & WL1251_ACX_INTR_RX0_DATA) {
282 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
286 if (intr & WL1251_ACX_INTR_RX1_DATA) {
287 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
291 if (intr & WL1251_ACX_INTR_TX_RESULT) {
292 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
293 wl1251_tx_complete(wl);
296 if (intr & (WL1251_ACX_INTR_EVENT_A |
297 WL1251_ACX_INTR_EVENT_B)) {
298 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)",
300 if (intr & WL1251_ACX_INTR_EVENT_A)
301 wl1251_event_handle(wl, 0);
303 wl1251_event_handle(wl, 1);
306 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
307 wl1251_debug(DEBUG_IRQ,
308 "WL1251_ACX_INTR_INIT_COMPLETE");
313 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
317 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
318 wl1251_ps_elp_sleep(wl);
321 mutex_unlock(&wl->mutex);
324 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
325 u16 beacon_interval, u8 dtim_period)
329 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
330 DEFAULT_HW_GEN_MODULATION_TYPE,
331 wl->tx_mgmt_frm_rate,
332 wl->tx_mgmt_frm_mod);
337 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
343 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
344 * locking we just sleep instead, for now
352 static void wl1251_filter_work(struct work_struct *work)
355 container_of(work, struct wl1251, filter_work);
358 mutex_lock(&wl->mutex);
360 if (wl->state == WL1251_STATE_OFF)
363 ret = wl1251_ps_elp_wakeup(wl);
367 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
373 wl1251_ps_elp_sleep(wl);
376 mutex_unlock(&wl->mutex);
379 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
381 struct wl1251 *wl = hw->priv;
383 skb_queue_tail(&wl->tx_queue, skb);
386 * The chip specific setup must run before the first TX packet -
387 * before that, the tx_work will not be initialized!
390 ieee80211_queue_work(wl->hw, &wl->tx_work);
393 * The workqueue is slow to process the tx_queue and we need stop
394 * the queue here, otherwise the queue will get too long.
396 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
397 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
398 ieee80211_stop_queues(wl->hw);
401 * FIXME: this is racy, the variable is not properly
402 * protected. Maybe fix this by removing the stupid
403 * variable altogether and checking the real queue state?
405 wl->tx_queue_stopped = true;
411 static int wl1251_op_start(struct ieee80211_hw *hw)
413 struct wl1251 *wl = hw->priv;
416 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
418 mutex_lock(&wl->mutex);
420 if (wl->state != WL1251_STATE_OFF) {
421 wl1251_error("cannot start because not in off state: %d",
427 ret = wl1251_chip_wakeup(wl);
431 ret = wl1251_boot(wl);
435 ret = wl1251_hw_init(wl);
439 ret = wl1251_acx_station_id(wl);
443 wl->state = WL1251_STATE_ON;
445 wl1251_info("firmware booted (%s)", wl->fw_ver);
449 wl1251_power_off(wl);
451 mutex_unlock(&wl->mutex);
456 static void wl1251_op_stop(struct ieee80211_hw *hw)
458 struct wl1251 *wl = hw->priv;
462 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
464 mutex_lock(&wl->mutex);
466 WARN_ON(wl->state != WL1251_STATE_ON);
469 mutex_unlock(&wl->mutex);
470 ieee80211_scan_completed(wl->hw, true);
471 mutex_lock(&wl->mutex);
472 wl->scanning = false;
475 wl->state = WL1251_STATE_OFF;
477 wl1251_disable_interrupts(wl);
479 mutex_unlock(&wl->mutex);
481 cancel_work_sync(&wl->irq_work);
482 cancel_work_sync(&wl->tx_work);
483 cancel_work_sync(&wl->filter_work);
485 mutex_lock(&wl->mutex);
487 /* let's notify MAC80211 about the remaining pending TX frames */
489 wl1251_power_off(wl);
491 memset(wl->bssid, 0, ETH_ALEN);
493 wl->bss_type = MAX_BSS_TYPE;
495 wl->data_in_count = 0;
498 wl->rx_current_buffer = 0;
500 wl->next_tx_complete = 0;
503 wl->tx_queue_stopped = false;
504 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
505 wl->channel = WL1251_DEFAULT_CHANNEL;
507 wl1251_debugfs_reset(wl);
509 mutex_unlock(&wl->mutex);
512 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
513 struct ieee80211_vif *vif)
515 struct wl1251 *wl = hw->priv;
518 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
519 vif->type, vif->addr);
521 mutex_lock(&wl->mutex);
530 case NL80211_IFTYPE_STATION:
531 wl->bss_type = BSS_TYPE_STA_BSS;
533 case NL80211_IFTYPE_ADHOC:
534 wl->bss_type = BSS_TYPE_IBSS;
541 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
542 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
543 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
544 ret = wl1251_acx_station_id(wl);
550 mutex_unlock(&wl->mutex);
554 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
555 struct ieee80211_vif *vif)
557 struct wl1251 *wl = hw->priv;
559 mutex_lock(&wl->mutex);
560 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
562 mutex_unlock(&wl->mutex);
565 static int wl1251_build_qos_null_data(struct wl1251 *wl)
567 struct ieee80211_qos_hdr template;
569 memset(&template, 0, sizeof(template));
571 memcpy(template.addr1, wl->bssid, ETH_ALEN);
572 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
573 memcpy(template.addr3, wl->bssid, ETH_ALEN);
575 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
576 IEEE80211_STYPE_QOS_NULLFUNC |
577 IEEE80211_FCTL_TODS);
579 /* FIXME: not sure what priority to use here */
580 template.qos_ctrl = cpu_to_le16(0);
582 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
586 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
588 struct wl1251 *wl = hw->priv;
589 struct ieee80211_conf *conf = &hw->conf;
590 int channel, ret = 0;
592 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
594 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
596 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
599 mutex_lock(&wl->mutex);
601 ret = wl1251_ps_elp_wakeup(wl);
605 if (channel != wl->channel) {
606 wl->channel = channel;
608 ret = wl1251_join(wl, wl->bss_type, wl->channel,
609 wl->beacon_int, wl->dtim_period);
614 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
615 wl1251_debug(DEBUG_PSM, "psm enabled");
617 wl->psm_requested = true;
619 wl->dtim_period = conf->ps_dtim_period;
621 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
625 * mac80211 enables PSM only if we're already associated.
627 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
630 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
632 wl1251_debug(DEBUG_PSM, "psm disabled");
634 wl->psm_requested = false;
637 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
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 | \
667 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
668 unsigned int changed,
669 unsigned int *total,u64 multicast)
671 struct wl1251 *wl = hw->priv;
673 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
675 *total &= WL1251_SUPPORTED_FILTERS;
676 changed &= WL1251_SUPPORTED_FILTERS;
679 /* no filters which we support changed */
682 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
684 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
685 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
687 if (*total & FIF_PROMISC_IN_BSS) {
688 wl->rx_config |= CFG_BSSID_FILTER_EN;
689 wl->rx_config |= CFG_RX_ALL_GOOD;
691 if (*total & FIF_ALLMULTI)
693 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
694 * all multicast frames
696 wl->rx_config &= ~CFG_MC_FILTER_EN;
697 if (*total & FIF_FCSFAIL)
698 wl->rx_filter |= CFG_RX_FCS_ERROR;
699 if (*total & FIF_BCN_PRBRESP_PROMISC) {
700 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
701 wl->rx_config &= ~CFG_SSID_FILTER_EN;
703 if (*total & FIF_CONTROL)
704 wl->rx_filter |= CFG_RX_CTL_EN;
705 if (*total & FIF_OTHER_BSS)
706 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
709 * FIXME: workqueues need to be properly cancelled on stop(), for
710 * now let's just disable changing the filter settings. They will
711 * be updated any on config().
713 /* schedule_work(&wl->filter_work); */
717 static int wl1251_set_key_type(struct wl1251 *wl,
718 struct wl1251_cmd_set_keys *key,
719 enum set_key_cmd cmd,
720 struct ieee80211_key_conf *mac80211_key,
723 switch (mac80211_key->alg) {
725 if (is_broadcast_ether_addr(addr))
726 key->key_type = KEY_WEP_DEFAULT;
728 key->key_type = KEY_WEP_ADDR;
730 mac80211_key->hw_key_idx = mac80211_key->keyidx;
733 if (is_broadcast_ether_addr(addr))
734 key->key_type = KEY_TKIP_MIC_GROUP;
736 key->key_type = KEY_TKIP_MIC_PAIRWISE;
738 mac80211_key->hw_key_idx = mac80211_key->keyidx;
741 if (is_broadcast_ether_addr(addr))
742 key->key_type = KEY_AES_GROUP;
744 key->key_type = KEY_AES_PAIRWISE;
745 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
748 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
755 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
756 struct ieee80211_vif *vif,
757 struct ieee80211_sta *sta,
758 struct ieee80211_key_conf *key)
760 struct wl1251 *wl = hw->priv;
761 struct wl1251_cmd_set_keys *wl_cmd;
765 static const u8 bcast_addr[ETH_ALEN] =
766 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
768 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
770 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
776 addr = sta ? sta->addr : bcast_addr;
778 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
779 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
780 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
781 key->alg, key->keyidx, key->keylen, key->flags);
782 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
784 if (is_zero_ether_addr(addr)) {
785 /* We dont support TX only encryption */
790 mutex_lock(&wl->mutex);
792 ret = wl1251_ps_elp_wakeup(wl);
798 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
801 wl_cmd->key_action = KEY_REMOVE;
804 wl1251_error("Unsupported key cmd 0x%x", cmd);
808 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
810 wl1251_error("Set KEY type failed");
814 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
815 memcpy(wl_cmd->addr, addr, ETH_ALEN);
817 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
818 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
820 * We get the key in the following form:
821 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
822 * but the target is expecting:
823 * TKIP - RX MIC - TX MIC
825 memcpy(wl_cmd->key, key->key, 16);
826 memcpy(wl_cmd->key + 16, key->key + 24, 8);
827 memcpy(wl_cmd->key + 24, key->key + 16, 8);
830 memcpy(wl_cmd->key, key->key, key->keylen);
832 wl_cmd->key_size = key->keylen;
834 wl_cmd->id = key->keyidx;
835 wl_cmd->ssid_profile = 0;
837 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
839 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
841 wl1251_warning("could not set keys");
846 wl1251_ps_elp_sleep(wl);
849 mutex_unlock(&wl->mutex);
857 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
858 struct ieee80211_vif *vif,
859 struct cfg80211_scan_request *req)
861 struct wl1251 *wl = hw->priv;
867 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
870 ssid = req->ssids[0].ssid;
871 ssid_len = req->ssids[0].ssid_len;
874 mutex_lock(&wl->mutex);
877 wl1251_debug(DEBUG_SCAN, "scan already in progress");
882 ret = wl1251_ps_elp_wakeup(wl);
886 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
887 req->ie, req->ie_len);
893 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
899 ret = wl1251_cmd_trigger_scan_to(wl, 0);
905 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
906 req->n_channels, WL1251_SCAN_NUM_PROBES);
908 wl->scanning = false;
913 wl1251_ps_elp_sleep(wl);
916 mutex_unlock(&wl->mutex);
921 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
923 struct wl1251 *wl = hw->priv;
926 mutex_lock(&wl->mutex);
928 ret = wl1251_ps_elp_wakeup(wl);
932 ret = wl1251_acx_rts_threshold(wl, (u16) value);
934 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
936 wl1251_ps_elp_sleep(wl);
939 mutex_unlock(&wl->mutex);
944 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
945 struct ieee80211_vif *vif,
946 struct ieee80211_bss_conf *bss_conf,
949 struct wl1251 *wl = hw->priv;
950 struct sk_buff *beacon, *skb;
953 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
955 mutex_lock(&wl->mutex);
957 ret = wl1251_ps_elp_wakeup(wl);
961 if (changed & BSS_CHANGED_BSSID) {
962 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
964 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
968 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
969 skb->data, skb->len);
974 ret = wl1251_build_qos_null_data(wl);
978 if (wl->bss_type != BSS_TYPE_IBSS) {
979 ret = wl1251_join(wl, wl->bss_type, wl->channel,
980 wl->beacon_int, wl->dtim_period);
986 if (changed & BSS_CHANGED_ASSOC) {
987 if (bss_conf->assoc) {
988 wl->beacon_int = bss_conf->beacon_int;
990 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
994 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1001 ret = wl1251_acx_aid(wl, bss_conf->aid);
1005 /* use defaults when not associated */
1006 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1007 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1010 if (changed & BSS_CHANGED_ERP_SLOT) {
1011 if (bss_conf->use_short_slot)
1012 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1014 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1016 wl1251_warning("Set slot time failed %d", ret);
1021 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1022 if (bss_conf->use_short_preamble)
1023 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1025 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1028 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1029 if (bss_conf->use_cts_prot)
1030 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1032 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1034 wl1251_warning("Set ctsprotect failed %d", ret);
1039 if (changed & BSS_CHANGED_BEACON) {
1040 beacon = ieee80211_beacon_get(hw, vif);
1041 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1045 dev_kfree_skb(beacon);
1049 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1052 dev_kfree_skb(beacon);
1057 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1058 wl->channel, wl->dtim_period);
1065 wl1251_ps_elp_sleep(wl);
1068 mutex_unlock(&wl->mutex);
1072 /* can't be const, mac80211 writes to this */
1073 static struct ieee80211_rate wl1251_rates[] = {
1076 .hw_value_short = 0x1, },
1079 .hw_value_short = 0x2,
1080 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1083 .hw_value_short = 0x4,
1084 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1087 .hw_value_short = 0x20,
1088 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1091 .hw_value_short = 0x8, },
1094 .hw_value_short = 0x10, },
1097 .hw_value_short = 0x40, },
1100 .hw_value_short = 0x80, },
1103 .hw_value_short = 0x200, },
1106 .hw_value_short = 0x400, },
1109 .hw_value_short = 0x800, },
1112 .hw_value_short = 0x1000, },
1115 /* can't be const, mac80211 writes to this */
1116 static struct ieee80211_channel wl1251_channels[] = {
1117 { .hw_value = 1, .center_freq = 2412},
1118 { .hw_value = 2, .center_freq = 2417},
1119 { .hw_value = 3, .center_freq = 2422},
1120 { .hw_value = 4, .center_freq = 2427},
1121 { .hw_value = 5, .center_freq = 2432},
1122 { .hw_value = 6, .center_freq = 2437},
1123 { .hw_value = 7, .center_freq = 2442},
1124 { .hw_value = 8, .center_freq = 2447},
1125 { .hw_value = 9, .center_freq = 2452},
1126 { .hw_value = 10, .center_freq = 2457},
1127 { .hw_value = 11, .center_freq = 2462},
1128 { .hw_value = 12, .center_freq = 2467},
1129 { .hw_value = 13, .center_freq = 2472},
1132 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1133 const struct ieee80211_tx_queue_params *params)
1135 enum wl1251_acx_ps_scheme ps_scheme;
1136 struct wl1251 *wl = hw->priv;
1139 mutex_lock(&wl->mutex);
1141 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1143 ret = wl1251_ps_elp_wakeup(wl);
1147 /* mac80211 uses units of 32 usec */
1148 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1149 params->cw_min, params->cw_max,
1150 params->aifs, params->txop * 32);
1155 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1157 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1159 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1161 wl1251_tx_get_queue(queue), ps_scheme,
1162 WL1251_ACX_ACK_POLICY_LEGACY);
1167 wl1251_ps_elp_sleep(wl);
1170 mutex_unlock(&wl->mutex);
1175 /* can't be const, mac80211 writes to this */
1176 static struct ieee80211_supported_band wl1251_band_2ghz = {
1177 .channels = wl1251_channels,
1178 .n_channels = ARRAY_SIZE(wl1251_channels),
1179 .bitrates = wl1251_rates,
1180 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1183 static const struct ieee80211_ops wl1251_ops = {
1184 .start = wl1251_op_start,
1185 .stop = wl1251_op_stop,
1186 .add_interface = wl1251_op_add_interface,
1187 .remove_interface = wl1251_op_remove_interface,
1188 .config = wl1251_op_config,
1189 .configure_filter = wl1251_op_configure_filter,
1191 .set_key = wl1251_op_set_key,
1192 .hw_scan = wl1251_op_hw_scan,
1193 .bss_info_changed = wl1251_op_bss_info_changed,
1194 .set_rts_threshold = wl1251_op_set_rts_threshold,
1195 .conf_tx = wl1251_op_conf_tx,
1198 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1200 unsigned long timeout;
1202 wl1251_reg_write32(wl, EE_ADDR, offset);
1203 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1205 /* EE_CTL_READ clears when data is ready */
1206 timeout = jiffies + msecs_to_jiffies(100);
1208 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1211 if (time_after(jiffies, timeout))
1217 *data = wl1251_reg_read32(wl, EE_DATA);
1221 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1222 u8 *data, size_t len)
1227 wl1251_reg_write32(wl, EE_START, 0);
1229 for (i = 0; i < len; i++) {
1230 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1238 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1243 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1245 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1247 wl1251_warning("failed to read MAC address from EEPROM");
1251 /* MAC is stored in reverse order */
1252 for (i = 0; i < ETH_ALEN; i++)
1253 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1258 static int wl1251_register_hw(struct wl1251 *wl)
1262 if (wl->mac80211_registered)
1265 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1267 ret = ieee80211_register_hw(wl->hw);
1269 wl1251_error("unable to register mac80211 hw: %d", ret);
1273 wl->mac80211_registered = true;
1275 wl1251_notice("loaded");
1280 int wl1251_init_ieee80211(struct wl1251 *wl)
1284 /* The tx descriptor buffer and the TKIP space */
1285 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1286 + WL1251_TKIP_IV_SPACE;
1289 /* FIXME: find a proper value */
1290 wl->hw->channel_change_time = 10000;
1292 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1293 IEEE80211_HW_SUPPORTS_PS |
1294 IEEE80211_HW_BEACON_FILTER |
1295 IEEE80211_HW_SUPPORTS_UAPSD;
1297 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1298 wl->hw->wiphy->max_scan_ssids = 1;
1299 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1304 wl1251_read_eeprom_mac(wl);
1306 ret = wl1251_register_hw(wl);
1310 wl1251_debugfs_init(wl);
1311 wl1251_notice("initialized");
1318 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1320 struct ieee80211_hw *wl1251_alloc_hw(void)
1322 struct ieee80211_hw *hw;
1325 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1327 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1329 wl1251_error("could not alloc ieee80211_hw");
1330 return ERR_PTR(-ENOMEM);
1334 memset(wl, 0, sizeof(*wl));
1338 wl->data_in_count = 0;
1340 skb_queue_head_init(&wl->tx_queue);
1342 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1343 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1344 wl->channel = WL1251_DEFAULT_CHANNEL;
1345 wl->scanning = false;
1346 wl->default_key = 0;
1350 wl->rx_current_buffer = 0;
1352 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1353 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1356 wl->psm_requested = false;
1357 wl->tx_queue_stopped = false;
1358 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1359 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1360 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1363 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1364 wl->tx_frames[i] = NULL;
1366 wl->next_tx_complete = 0;
1368 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1369 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1372 * In case our MAC address is not correctly set,
1373 * we use a random but Nokia MAC.
1375 memcpy(wl->mac_addr, nokia_oui, 3);
1376 get_random_bytes(wl->mac_addr + 3, 3);
1378 wl->state = WL1251_STATE_OFF;
1379 mutex_init(&wl->mutex);
1381 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1382 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1384 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1385 if (!wl->rx_descriptor) {
1386 wl1251_error("could not allocate memory for rx descriptor");
1387 ieee80211_free_hw(hw);
1388 return ERR_PTR(-ENOMEM);
1393 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1395 int wl1251_free_hw(struct wl1251 *wl)
1397 ieee80211_unregister_hw(wl->hw);
1399 wl1251_debugfs_exit(wl);
1401 kfree(wl->target_mem_map);
1402 kfree(wl->data_path);
1408 kfree(wl->rx_descriptor);
1409 wl->rx_descriptor = NULL;
1411 ieee80211_free_hw(wl->hw);
1415 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1417 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1418 MODULE_LICENSE("GPL");
1419 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1420 MODULE_ALIAS("spi:wl1251");
1421 MODULE_FIRMWARE(WL1251_FW_NAME);