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 #if (LINUX_VERSION_CODE == KERNEL_VERSION(2,6,28))
30 #include <linux/device.h>
32 #include <linux/crc32.h>
33 #include <linux/etherdevice.h>
34 #include <linux/vmalloc.h>
37 #include "wl12xx_80211.h"
38 #include "wl1251_reg.h"
39 #include "wl1251_io.h"
40 #include "wl1251_cmd.h"
41 #include "wl1251_event.h"
42 #include "wl1251_tx.h"
43 #include "wl1251_rx.h"
44 #include "wl1251_ps.h"
45 #include "wl1251_init.h"
46 #include "wl1251_debugfs.h"
47 #include "wl1251_boot.h"
49 void wl1251_enable_interrupts(struct wl1251 *wl)
51 wl->if_ops->enable_irq(wl);
54 void wl1251_disable_interrupts(struct wl1251 *wl)
56 wl->if_ops->disable_irq(wl);
59 static void wl1251_power_off(struct wl1251 *wl)
64 static void wl1251_power_on(struct wl1251 *wl)
69 static int wl1251_fetch_firmware(struct wl1251 *wl)
71 const struct firmware *fw;
72 struct device *dev = wiphy_dev(wl->hw->wiphy);
75 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
78 wl1251_error("could not get firmware: %d", ret);
83 wl1251_error("firmware size is not multiple of 32 bits: %zu",
89 wl->fw_len = fw->size;
90 wl->fw = vmalloc(wl->fw_len);
93 wl1251_error("could not allocate memory for the firmware");
98 memcpy(wl->fw, fw->data, wl->fw_len);
103 release_firmware(fw);
108 static int wl1251_fetch_nvs(struct wl1251 *wl)
110 const struct firmware *fw;
111 struct device *dev = wiphy_dev(wl->hw->wiphy);
114 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
117 wl1251_error("could not get nvs file: %d", ret);
122 wl1251_error("nvs size is not multiple of 32 bits: %zu",
128 wl->nvs_len = fw->size;
129 wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
132 wl1251_error("could not allocate memory for the nvs file");
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_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
300 wl1251_event_handle(wl, 0);
303 if (intr & WL1251_ACX_INTR_EVENT_B) {
304 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
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,
344 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
346 wl1251_warning("join timeout");
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;
384 skb_queue_tail(&wl->tx_queue, skb);
387 * The chip specific setup must run before the first TX packet -
388 * before that, the tx_work will not be initialized!
391 ieee80211_queue_work(wl->hw, &wl->tx_work);
394 * The workqueue is slow to process the tx_queue and we need stop
395 * the queue here, otherwise the queue will get too long.
397 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
398 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
400 spin_lock_irqsave(&wl->wl_lock, flags);
401 ieee80211_stop_queues(wl->hw);
402 wl->tx_queue_stopped = true;
403 spin_unlock_irqrestore(&wl->wl_lock, flags);
409 static int wl1251_op_start(struct ieee80211_hw *hw)
411 struct wl1251 *wl = hw->priv;
412 struct wiphy *wiphy = hw->wiphy;
415 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
417 mutex_lock(&wl->mutex);
419 if (wl->state != WL1251_STATE_OFF) {
420 wl1251_error("cannot start because not in off state: %d",
426 ret = wl1251_chip_wakeup(wl);
430 ret = wl1251_boot(wl);
434 ret = wl1251_hw_init(wl);
438 ret = wl1251_acx_station_id(wl);
442 wl->state = WL1251_STATE_ON;
444 wl1251_info("firmware booted (%s)", wl->fw_ver);
446 /* update hw/fw version info in wiphy struct */
447 wiphy->hw_version = wl->chip_id;
448 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
452 wl1251_power_off(wl);
454 mutex_unlock(&wl->mutex);
459 static void wl1251_op_stop(struct ieee80211_hw *hw)
461 struct wl1251 *wl = hw->priv;
465 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
467 mutex_lock(&wl->mutex);
469 WARN_ON(wl->state != WL1251_STATE_ON);
472 mutex_unlock(&wl->mutex);
473 ieee80211_scan_completed(wl->hw, true);
474 mutex_lock(&wl->mutex);
475 wl->scanning = false;
478 wl->state = WL1251_STATE_OFF;
480 wl1251_disable_interrupts(wl);
482 mutex_unlock(&wl->mutex);
484 cancel_work_sync(&wl->irq_work);
485 cancel_work_sync(&wl->tx_work);
486 cancel_work_sync(&wl->filter_work);
488 mutex_lock(&wl->mutex);
490 /* let's notify MAC80211 about the remaining pending TX frames */
492 wl1251_power_off(wl);
494 memset(wl->bssid, 0, ETH_ALEN);
496 wl->bss_type = MAX_BSS_TYPE;
498 wl->data_in_count = 0;
501 wl->rx_current_buffer = 0;
503 wl->next_tx_complete = 0;
506 wl->tx_queue_stopped = false;
507 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
508 wl->channel = WL1251_DEFAULT_CHANNEL;
510 wl1251_debugfs_reset(wl);
512 mutex_unlock(&wl->mutex);
515 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
516 struct ieee80211_vif *vif)
518 struct wl1251 *wl = hw->priv;
521 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
522 vif->type, vif->addr);
524 mutex_lock(&wl->mutex);
533 case NL80211_IFTYPE_STATION:
534 wl->bss_type = BSS_TYPE_STA_BSS;
536 case NL80211_IFTYPE_ADHOC:
537 wl->bss_type = BSS_TYPE_IBSS;
544 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
545 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
546 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
547 ret = wl1251_acx_station_id(wl);
553 mutex_unlock(&wl->mutex);
557 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
558 struct ieee80211_vif *vif)
560 struct wl1251 *wl = hw->priv;
562 mutex_lock(&wl->mutex);
563 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
565 mutex_unlock(&wl->mutex);
568 static int wl1251_build_qos_null_data(struct wl1251 *wl)
570 struct ieee80211_qos_hdr template;
572 memset(&template, 0, sizeof(template));
574 memcpy(template.addr1, wl->bssid, ETH_ALEN);
575 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
576 memcpy(template.addr3, wl->bssid, ETH_ALEN);
578 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
579 IEEE80211_STYPE_QOS_NULLFUNC |
580 IEEE80211_FCTL_TODS);
582 /* FIXME: not sure what priority to use here */
583 template.qos_ctrl = cpu_to_le16(0);
585 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
589 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
591 struct wl1251 *wl = hw->priv;
592 struct ieee80211_conf *conf = &hw->conf;
593 int channel, ret = 0;
595 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
597 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
599 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
602 mutex_lock(&wl->mutex);
604 ret = wl1251_ps_elp_wakeup(wl);
608 if (channel != wl->channel) {
609 wl->channel = channel;
611 ret = wl1251_join(wl, wl->bss_type, wl->channel,
612 wl->beacon_int, wl->dtim_period);
617 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
618 wl1251_debug(DEBUG_PSM, "psm enabled");
620 wl->psm_requested = true;
622 wl->dtim_period = conf->ps_dtim_period;
624 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
628 * mac80211 enables PSM only if we're already associated.
630 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
633 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
635 wl1251_debug(DEBUG_PSM, "psm disabled");
637 wl->psm_requested = false;
640 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
646 if (conf->power_level != wl->power_level) {
647 ret = wl1251_acx_tx_power(wl, conf->power_level);
651 wl->power_level = conf->power_level;
655 wl1251_ps_elp_sleep(wl);
658 mutex_unlock(&wl->mutex);
663 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
666 FIF_BCN_PRBRESP_PROMISC | \
670 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
671 unsigned int changed,
672 unsigned int *total,u64 multicast)
674 struct wl1251 *wl = hw->priv;
676 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
678 *total &= WL1251_SUPPORTED_FILTERS;
679 changed &= WL1251_SUPPORTED_FILTERS;
682 /* no filters which we support changed */
685 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
687 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
688 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
690 if (*total & FIF_PROMISC_IN_BSS) {
691 wl->rx_config |= CFG_BSSID_FILTER_EN;
692 wl->rx_config |= CFG_RX_ALL_GOOD;
694 if (*total & FIF_ALLMULTI)
696 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
697 * all multicast frames
699 wl->rx_config &= ~CFG_MC_FILTER_EN;
700 if (*total & FIF_FCSFAIL)
701 wl->rx_filter |= CFG_RX_FCS_ERROR;
702 if (*total & FIF_BCN_PRBRESP_PROMISC) {
703 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
704 wl->rx_config &= ~CFG_SSID_FILTER_EN;
706 if (*total & FIF_CONTROL)
707 wl->rx_filter |= CFG_RX_CTL_EN;
708 if (*total & FIF_OTHER_BSS)
709 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
712 * FIXME: workqueues need to be properly cancelled on stop(), for
713 * now let's just disable changing the filter settings. They will
714 * be updated any on config().
716 /* schedule_work(&wl->filter_work); */
720 static int wl1251_set_key_type(struct wl1251 *wl,
721 struct wl1251_cmd_set_keys *key,
722 enum set_key_cmd cmd,
723 struct ieee80211_key_conf *mac80211_key,
726 switch (mac80211_key->alg) {
728 if (is_broadcast_ether_addr(addr))
729 key->key_type = KEY_WEP_DEFAULT;
731 key->key_type = KEY_WEP_ADDR;
733 mac80211_key->hw_key_idx = mac80211_key->keyidx;
736 if (is_broadcast_ether_addr(addr))
737 key->key_type = KEY_TKIP_MIC_GROUP;
739 key->key_type = KEY_TKIP_MIC_PAIRWISE;
741 mac80211_key->hw_key_idx = mac80211_key->keyidx;
744 if (is_broadcast_ether_addr(addr))
745 key->key_type = KEY_AES_GROUP;
747 key->key_type = KEY_AES_PAIRWISE;
748 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
751 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
758 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
759 struct ieee80211_vif *vif,
760 struct ieee80211_sta *sta,
761 struct ieee80211_key_conf *key)
763 struct wl1251 *wl = hw->priv;
764 struct wl1251_cmd_set_keys *wl_cmd;
768 static const u8 bcast_addr[ETH_ALEN] =
769 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
771 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
773 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
779 addr = sta ? sta->addr : bcast_addr;
781 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
782 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
783 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
784 key->alg, key->keyidx, key->keylen, key->flags);
785 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
787 if (is_zero_ether_addr(addr)) {
788 /* We dont support TX only encryption */
793 mutex_lock(&wl->mutex);
795 ret = wl1251_ps_elp_wakeup(wl);
801 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
804 wl_cmd->key_action = KEY_REMOVE;
807 wl1251_error("Unsupported key cmd 0x%x", cmd);
811 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
813 wl1251_error("Set KEY type failed");
817 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
818 memcpy(wl_cmd->addr, addr, ETH_ALEN);
820 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
821 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
823 * We get the key in the following form:
824 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
825 * but the target is expecting:
826 * TKIP - RX MIC - TX MIC
828 memcpy(wl_cmd->key, key->key, 16);
829 memcpy(wl_cmd->key + 16, key->key + 24, 8);
830 memcpy(wl_cmd->key + 24, key->key + 16, 8);
833 memcpy(wl_cmd->key, key->key, key->keylen);
835 wl_cmd->key_size = key->keylen;
837 wl_cmd->id = key->keyidx;
838 wl_cmd->ssid_profile = 0;
840 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
842 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
844 wl1251_warning("could not set keys");
849 wl1251_ps_elp_sleep(wl);
852 mutex_unlock(&wl->mutex);
860 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
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 wl1251_debug(DEBUG_SCAN, "scan failed %d", ret);
911 wl->scanning = false;
916 wl1251_ps_elp_sleep(wl);
919 mutex_unlock(&wl->mutex);
924 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
926 struct wl1251 *wl = hw->priv;
929 mutex_lock(&wl->mutex);
931 ret = wl1251_ps_elp_wakeup(wl);
935 ret = wl1251_acx_rts_threshold(wl, (u16) value);
937 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
939 wl1251_ps_elp_sleep(wl);
942 mutex_unlock(&wl->mutex);
947 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
948 struct ieee80211_vif *vif,
949 struct ieee80211_bss_conf *bss_conf,
952 struct wl1251 *wl = hw->priv;
953 struct sk_buff *beacon, *skb;
956 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
958 mutex_lock(&wl->mutex);
960 ret = wl1251_ps_elp_wakeup(wl);
964 if (changed & BSS_CHANGED_BSSID) {
965 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
967 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
971 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
972 skb->data, skb->len);
977 ret = wl1251_build_qos_null_data(wl);
981 if (wl->bss_type != BSS_TYPE_IBSS) {
982 ret = wl1251_join(wl, wl->bss_type, wl->channel,
983 wl->beacon_int, wl->dtim_period);
989 if (changed & BSS_CHANGED_ASSOC) {
990 if (bss_conf->assoc) {
991 wl->beacon_int = bss_conf->beacon_int;
993 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
997 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1004 ret = wl1251_acx_aid(wl, bss_conf->aid);
1008 /* use defaults when not associated */
1009 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1010 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1013 if (changed & BSS_CHANGED_ERP_SLOT) {
1014 if (bss_conf->use_short_slot)
1015 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1017 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1019 wl1251_warning("Set slot time failed %d", ret);
1024 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1025 if (bss_conf->use_short_preamble)
1026 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1028 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1031 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1032 if (bss_conf->use_cts_prot)
1033 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1035 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1037 wl1251_warning("Set ctsprotect failed %d", ret);
1042 if (changed & BSS_CHANGED_BEACON) {
1043 beacon = ieee80211_beacon_get(hw, vif);
1047 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1051 dev_kfree_skb(beacon);
1055 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1058 dev_kfree_skb(beacon);
1063 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1064 wl->channel, wl->dtim_period);
1071 wl1251_ps_elp_sleep(wl);
1074 mutex_unlock(&wl->mutex);
1078 /* can't be const, mac80211 writes to this */
1079 static struct ieee80211_rate wl1251_rates[] = {
1082 .hw_value_short = 0x1, },
1085 .hw_value_short = 0x2,
1086 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1089 .hw_value_short = 0x4,
1090 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1093 .hw_value_short = 0x20,
1094 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1097 .hw_value_short = 0x8, },
1100 .hw_value_short = 0x10, },
1103 .hw_value_short = 0x40, },
1106 .hw_value_short = 0x80, },
1109 .hw_value_short = 0x200, },
1112 .hw_value_short = 0x400, },
1115 .hw_value_short = 0x800, },
1118 .hw_value_short = 0x1000, },
1121 /* can't be const, mac80211 writes to this */
1122 static struct ieee80211_channel wl1251_channels[] = {
1123 { .hw_value = 1, .center_freq = 2412},
1124 { .hw_value = 2, .center_freq = 2417},
1125 { .hw_value = 3, .center_freq = 2422},
1126 { .hw_value = 4, .center_freq = 2427},
1127 { .hw_value = 5, .center_freq = 2432},
1128 { .hw_value = 6, .center_freq = 2437},
1129 { .hw_value = 7, .center_freq = 2442},
1130 { .hw_value = 8, .center_freq = 2447},
1131 { .hw_value = 9, .center_freq = 2452},
1132 { .hw_value = 10, .center_freq = 2457},
1133 { .hw_value = 11, .center_freq = 2462},
1134 { .hw_value = 12, .center_freq = 2467},
1135 { .hw_value = 13, .center_freq = 2472},
1138 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1139 const struct ieee80211_tx_queue_params *params)
1141 enum wl1251_acx_ps_scheme ps_scheme;
1142 struct wl1251 *wl = hw->priv;
1145 mutex_lock(&wl->mutex);
1147 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1149 ret = wl1251_ps_elp_wakeup(wl);
1153 /* mac80211 uses units of 32 usec */
1154 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1155 params->cw_min, params->cw_max,
1156 params->aifs, params->txop * 32);
1161 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1163 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1165 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1167 wl1251_tx_get_queue(queue), ps_scheme,
1168 WL1251_ACX_ACK_POLICY_LEGACY);
1173 wl1251_ps_elp_sleep(wl);
1176 mutex_unlock(&wl->mutex);
1181 /* can't be const, mac80211 writes to this */
1182 static struct ieee80211_supported_band wl1251_band_2ghz = {
1183 .channels = wl1251_channels,
1184 .n_channels = ARRAY_SIZE(wl1251_channels),
1185 .bitrates = wl1251_rates,
1186 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1189 static const struct ieee80211_ops wl1251_ops = {
1190 .start = wl1251_op_start,
1191 .stop = wl1251_op_stop,
1192 .add_interface = wl1251_op_add_interface,
1193 .remove_interface = wl1251_op_remove_interface,
1194 .config = wl1251_op_config,
1195 .configure_filter = wl1251_op_configure_filter,
1197 .set_key = wl1251_op_set_key,
1198 .hw_scan = wl1251_op_hw_scan,
1199 .bss_info_changed = wl1251_op_bss_info_changed,
1200 .set_rts_threshold = wl1251_op_set_rts_threshold,
1201 .conf_tx = wl1251_op_conf_tx,
1204 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1206 unsigned long timeout;
1208 wl1251_reg_write32(wl, EE_ADDR, offset);
1209 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1211 /* EE_CTL_READ clears when data is ready */
1212 timeout = jiffies + msecs_to_jiffies(100);
1214 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1217 if (time_after(jiffies, timeout))
1223 *data = wl1251_reg_read32(wl, EE_DATA);
1227 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1228 u8 *data, size_t len)
1233 wl1251_reg_write32(wl, EE_START, 0);
1235 for (i = 0; i < len; i++) {
1236 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1244 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1249 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1251 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1253 wl1251_warning("failed to read MAC address from EEPROM");
1257 /* MAC is stored in reverse order */
1258 for (i = 0; i < ETH_ALEN; i++)
1259 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1264 static int wl1251_register_hw(struct wl1251 *wl)
1268 if (wl->mac80211_registered)
1271 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1273 ret = ieee80211_register_hw(wl->hw);
1275 wl1251_error("unable to register mac80211 hw: %d", ret);
1279 wl->mac80211_registered = true;
1281 wl1251_notice("loaded");
1286 int wl1251_init_ieee80211(struct wl1251 *wl)
1290 /* The tx descriptor buffer and the TKIP space */
1291 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1292 + WL1251_TKIP_IV_SPACE;
1295 /* FIXME: find a proper value */
1296 wl->hw->channel_change_time = 10000;
1298 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1299 IEEE80211_HW_NOISE_DBM |
1300 IEEE80211_HW_SUPPORTS_PS |
1301 IEEE80211_HW_BEACON_FILTER |
1302 IEEE80211_HW_SUPPORTS_UAPSD;
1304 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1305 BIT(NL80211_IFTYPE_ADHOC);
1306 wl->hw->wiphy->max_scan_ssids = 1;
1307 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1312 wl1251_read_eeprom_mac(wl);
1314 ret = wl1251_register_hw(wl);
1318 wl1251_debugfs_init(wl);
1319 wl1251_notice("initialized");
1326 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1328 struct ieee80211_hw *wl1251_alloc_hw(void)
1330 struct ieee80211_hw *hw;
1333 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1335 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1337 wl1251_error("could not alloc ieee80211_hw");
1338 return ERR_PTR(-ENOMEM);
1342 memset(wl, 0, sizeof(*wl));
1346 wl->data_in_count = 0;
1348 skb_queue_head_init(&wl->tx_queue);
1350 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1351 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1352 wl->channel = WL1251_DEFAULT_CHANNEL;
1353 wl->scanning = false;
1354 wl->default_key = 0;
1358 wl->rx_current_buffer = 0;
1360 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1361 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1364 wl->psm_requested = false;
1365 wl->tx_queue_stopped = false;
1366 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1367 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1368 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1371 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1372 wl->tx_frames[i] = NULL;
1374 wl->next_tx_complete = 0;
1376 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1377 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1380 * In case our MAC address is not correctly set,
1381 * we use a random but Nokia MAC.
1383 memcpy(wl->mac_addr, nokia_oui, 3);
1384 get_random_bytes(wl->mac_addr + 3, 3);
1386 wl->state = WL1251_STATE_OFF;
1387 mutex_init(&wl->mutex);
1389 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1390 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1392 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1393 if (!wl->rx_descriptor) {
1394 wl1251_error("could not allocate memory for rx descriptor");
1395 ieee80211_free_hw(hw);
1396 return ERR_PTR(-ENOMEM);
1401 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1403 int wl1251_free_hw(struct wl1251 *wl)
1405 ieee80211_unregister_hw(wl->hw);
1407 wl1251_debugfs_exit(wl);
1409 kfree(wl->target_mem_map);
1410 kfree(wl->data_path);
1416 kfree(wl->rx_descriptor);
1417 wl->rx_descriptor = NULL;
1419 ieee80211_free_hw(wl->hw);
1423 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1425 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1426 MODULE_LICENSE("GPL");
1427 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1428 MODULE_FIRMWARE(WL1251_FW_NAME);