| /* |
| * This file is part of wl1251 |
| * |
| * Copyright (C) 2008-2009 Nokia Corporation |
| * |
| * Contact: Kalle Valo <kalle.valo@nokia.com> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| * 02110-1301 USA |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/interrupt.h> |
| #include <linux/firmware.h> |
| #include <linux/delay.h> |
| #include <linux/irq.h> |
| #include <linux/crc32.h> |
| #include <linux/etherdevice.h> |
| |
| #include "wl1251.h" |
| #include "wl12xx_80211.h" |
| #include "wl1251_reg.h" |
| #include "wl1251_io.h" |
| #include "wl1251_cmd.h" |
| #include "wl1251_event.h" |
| #include "wl1251_tx.h" |
| #include "wl1251_rx.h" |
| #include "wl1251_ps.h" |
| #include "wl1251_init.h" |
| #include "wl1251_debugfs.h" |
| #include "wl1251_boot.h" |
| |
| void wl1251_enable_interrupts(struct wl1251 *wl) |
| { |
| wl->if_ops->enable_irq(wl); |
| } |
| |
| void wl1251_disable_interrupts(struct wl1251 *wl) |
| { |
| wl->if_ops->disable_irq(wl); |
| } |
| |
| static void wl1251_power_off(struct wl1251 *wl) |
| { |
| wl->set_power(false); |
| } |
| |
| static void wl1251_power_on(struct wl1251 *wl) |
| { |
| wl->set_power(true); |
| } |
| |
| static int wl1251_fetch_firmware(struct wl1251 *wl) |
| { |
| const struct firmware *fw; |
| struct device *dev = wiphy_dev(wl->hw->wiphy); |
| int ret; |
| |
| ret = request_firmware(&fw, WL1251_FW_NAME, dev); |
| |
| if (ret < 0) { |
| wl1251_error("could not get firmware: %d", ret); |
| return ret; |
| } |
| |
| if (fw->size % 4) { |
| wl1251_error("firmware size is not multiple of 32 bits: %zu", |
| fw->size); |
| ret = -EILSEQ; |
| goto out; |
| } |
| |
| wl->fw_len = fw->size; |
| wl->fw = kmalloc(wl->fw_len, GFP_KERNEL); |
| |
| if (!wl->fw) { |
| wl1251_error("could not allocate memory for the firmware"); |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| memcpy(wl->fw, fw->data, wl->fw_len); |
| |
| ret = 0; |
| |
| out: |
| release_firmware(fw); |
| |
| return ret; |
| } |
| |
| static int wl1251_fetch_nvs(struct wl1251 *wl) |
| { |
| const struct firmware *fw; |
| struct device *dev = wiphy_dev(wl->hw->wiphy); |
| int ret; |
| |
| ret = request_firmware(&fw, WL1251_NVS_NAME, dev); |
| |
| if (ret < 0) { |
| wl1251_error("could not get nvs file: %d", ret); |
| return ret; |
| } |
| |
| if (fw->size % 4) { |
| wl1251_error("nvs size is not multiple of 32 bits: %zu", |
| fw->size); |
| ret = -EILSEQ; |
| goto out; |
| } |
| |
| wl->nvs_len = fw->size; |
| wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL); |
| |
| if (!wl->nvs) { |
| wl1251_error("could not allocate memory for the nvs file"); |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| memcpy(wl->nvs, fw->data, wl->nvs_len); |
| |
| ret = 0; |
| |
| out: |
| release_firmware(fw); |
| |
| return ret; |
| } |
| |
| static void wl1251_fw_wakeup(struct wl1251 *wl) |
| { |
| u32 elp_reg; |
| |
| elp_reg = ELPCTRL_WAKE_UP; |
| wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg); |
| elp_reg = wl1251_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR); |
| |
| if (!(elp_reg & ELPCTRL_WLAN_READY)) |
| wl1251_warning("WLAN not ready"); |
| } |
| |
| static int wl1251_chip_wakeup(struct wl1251 *wl) |
| { |
| int ret = 0; |
| |
| wl1251_power_on(wl); |
| msleep(WL1251_POWER_ON_SLEEP); |
| wl->if_ops->reset(wl); |
| |
| /* We don't need a real memory partition here, because we only want |
| * to use the registers at this point. */ |
| wl1251_set_partition(wl, |
| 0x00000000, |
| 0x00000000, |
| REGISTERS_BASE, |
| REGISTERS_DOWN_SIZE); |
| |
| /* ELP module wake up */ |
| wl1251_fw_wakeup(wl); |
| |
| /* whal_FwCtrl_BootSm() */ |
| |
| /* 0. read chip id from CHIP_ID */ |
| wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B); |
| |
| /* 1. check if chip id is valid */ |
| |
| switch (wl->chip_id) { |
| case CHIP_ID_1251_PG12: |
| wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)", |
| wl->chip_id); |
| break; |
| case CHIP_ID_1251_PG11: |
| wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)", |
| wl->chip_id); |
| break; |
| case CHIP_ID_1251_PG10: |
| default: |
| wl1251_error("unsupported chip id: 0x%x", wl->chip_id); |
| ret = -ENODEV; |
| goto out; |
| } |
| |
| if (wl->fw == NULL) { |
| ret = wl1251_fetch_firmware(wl); |
| if (ret < 0) |
| goto out; |
| } |
| |
| /* No NVS from netlink, try to get it from the filesystem */ |
| if (wl->nvs == NULL) { |
| ret = wl1251_fetch_nvs(wl); |
| if (ret < 0) |
| goto out; |
| } |
| |
| out: |
| return ret; |
| } |
| |
| static void wl1251_irq_work(struct work_struct *work) |
| { |
| u32 intr; |
| struct wl1251 *wl = |
| container_of(work, struct wl1251, irq_work); |
| int ret; |
| |
| mutex_lock(&wl->mutex); |
| |
| wl1251_debug(DEBUG_IRQ, "IRQ work"); |
| |
| if (wl->state == WL1251_STATE_OFF) |
| goto out; |
| |
| ret = wl1251_ps_elp_wakeup(wl); |
| if (ret < 0) |
| goto out; |
| |
| wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL); |
| |
| intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); |
| wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr); |
| |
| if (wl->data_path) { |
| wl->rx_counter = |
| wl1251_mem_read32(wl, wl->data_path->rx_control_addr); |
| |
| /* We handle a frmware bug here */ |
| switch ((wl->rx_counter - wl->rx_handled) & 0xf) { |
| case 0: |
| wl1251_debug(DEBUG_IRQ, "RX: FW and host in sync"); |
| intr &= ~WL1251_ACX_INTR_RX0_DATA; |
| intr &= ~WL1251_ACX_INTR_RX1_DATA; |
| break; |
| case 1: |
| wl1251_debug(DEBUG_IRQ, "RX: FW +1"); |
| intr |= WL1251_ACX_INTR_RX0_DATA; |
| intr &= ~WL1251_ACX_INTR_RX1_DATA; |
| break; |
| case 2: |
| wl1251_debug(DEBUG_IRQ, "RX: FW +2"); |
| intr |= WL1251_ACX_INTR_RX0_DATA; |
| intr |= WL1251_ACX_INTR_RX1_DATA; |
| break; |
| default: |
| wl1251_warning("RX: FW and host out of sync: %d", |
| wl->rx_counter - wl->rx_handled); |
| break; |
| } |
| |
| wl->rx_handled = wl->rx_counter; |
| |
| |
| wl1251_debug(DEBUG_IRQ, "RX counter: %d", wl->rx_counter); |
| } |
| |
| intr &= wl->intr_mask; |
| |
| if (intr == 0) { |
| wl1251_debug(DEBUG_IRQ, "INTR is 0"); |
| wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, |
| ~(wl->intr_mask)); |
| |
| goto out_sleep; |
| } |
| |
| if (intr & WL1251_ACX_INTR_RX0_DATA) { |
| wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA"); |
| wl1251_rx(wl); |
| } |
| |
| if (intr & WL1251_ACX_INTR_RX1_DATA) { |
| wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA"); |
| wl1251_rx(wl); |
| } |
| |
| if (intr & WL1251_ACX_INTR_TX_RESULT) { |
| wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT"); |
| wl1251_tx_complete(wl); |
| } |
| |
| if (intr & (WL1251_ACX_INTR_EVENT_A | WL1251_ACX_INTR_EVENT_B)) { |
| wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)", intr); |
| if (intr & WL1251_ACX_INTR_EVENT_A) |
| wl1251_event_handle(wl, 0); |
| else |
| wl1251_event_handle(wl, 1); |
| } |
| |
| if (intr & WL1251_ACX_INTR_INIT_COMPLETE) |
| wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_INIT_COMPLETE"); |
| |
| wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask)); |
| |
| out_sleep: |
| wl1251_ps_elp_sleep(wl); |
| |
| out: |
| mutex_unlock(&wl->mutex); |
| } |
| |
| static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel, |
| u16 beacon_interval, u8 dtim_period) |
| { |
| int ret; |
| |
| ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE, |
| DEFAULT_HW_GEN_MODULATION_TYPE, |
| wl->tx_mgmt_frm_rate, |
| wl->tx_mgmt_frm_mod); |
| if (ret < 0) |
| goto out; |
| |
| |
| ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval, |
| dtim_period); |
| if (ret < 0) |
| goto out; |
| |
| /* |
| * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify |
| * locking we just sleep instead, for now |
| */ |
| msleep(10); |
| |
| out: |
| return ret; |
| } |
| |
| static void wl1251_filter_work(struct work_struct *work) |
| { |
| struct wl1251 *wl = |
| container_of(work, struct wl1251, filter_work); |
| int ret; |
| |
| mutex_lock(&wl->mutex); |
| |
| if (wl->state == WL1251_STATE_OFF) |
| goto out; |
| |
| ret = wl1251_ps_elp_wakeup(wl); |
| if (ret < 0) |
| goto out; |
| |
| ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int, |
| wl->dtim_period); |
| if (ret < 0) |
| goto out_sleep; |
| |
| out_sleep: |
| wl1251_ps_elp_sleep(wl); |
| |
| out: |
| mutex_unlock(&wl->mutex); |
| } |
| |
| static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
| { |
| struct wl1251 *wl = hw->priv; |
| |
| skb_queue_tail(&wl->tx_queue, skb); |
| |
| /* |
| * The chip specific setup must run before the first TX packet - |
| * before that, the tx_work will not be initialized! |
| */ |
| |
| ieee80211_queue_work(wl->hw, &wl->tx_work); |
| |
| /* |
| * The workqueue is slow to process the tx_queue and we need stop |
| * the queue here, otherwise the queue will get too long. |
| */ |
| if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) { |
| ieee80211_stop_queues(wl->hw); |
| |
| /* |
| * FIXME: this is racy, the variable is not properly |
| * protected. Maybe fix this by removing the stupid |
| * variable altogether and checking the real queue state? |
| */ |
| wl->tx_queue_stopped = true; |
| } |
| |
| return NETDEV_TX_OK; |
| } |
| |
| static int wl1251_op_start(struct ieee80211_hw *hw) |
| { |
| struct wl1251 *wl = hw->priv; |
| int ret = 0; |
| |
| wl1251_debug(DEBUG_MAC80211, "mac80211 start"); |
| |
| mutex_lock(&wl->mutex); |
| |
| if (wl->state != WL1251_STATE_OFF) { |
| wl1251_error("cannot start because not in off state: %d", |
| wl->state); |
| ret = -EBUSY; |
| goto out; |
| } |
| |
| ret = wl1251_chip_wakeup(wl); |
| if (ret < 0) |
| goto out; |
| |
| ret = wl1251_boot(wl); |
| if (ret < 0) |
| goto out; |
| |
| ret = wl1251_hw_init(wl); |
| if (ret < 0) |
| goto out; |
| |
| ret = wl1251_acx_station_id(wl); |
| if (ret < 0) |
| goto out; |
| |
| wl->state = WL1251_STATE_ON; |
| |
| wl1251_info("firmware booted (%s)", wl->fw_ver); |
| |
| out: |
| if (ret < 0) |
| wl1251_power_off(wl); |
| |
| mutex_unlock(&wl->mutex); |
| |
| return ret; |
| } |
| |
| static void wl1251_op_stop(struct ieee80211_hw *hw) |
| { |
| struct wl1251 *wl = hw->priv; |
| |
| wl1251_info("down"); |
| |
| wl1251_debug(DEBUG_MAC80211, "mac80211 stop"); |
| |
| mutex_lock(&wl->mutex); |
| |
| WARN_ON(wl->state != WL1251_STATE_ON); |
| |
| if (wl->scanning) { |
| mutex_unlock(&wl->mutex); |
| ieee80211_scan_completed(wl->hw, true); |
| mutex_lock(&wl->mutex); |
| wl->scanning = false; |
| } |
| |
| wl->state = WL1251_STATE_OFF; |
| |
| wl1251_disable_interrupts(wl); |
| |
| mutex_unlock(&wl->mutex); |
| |
| cancel_work_sync(&wl->irq_work); |
| cancel_work_sync(&wl->tx_work); |
| cancel_work_sync(&wl->filter_work); |
| |
| mutex_lock(&wl->mutex); |
| |
| /* let's notify MAC80211 about the remaining pending TX frames */ |
| wl1251_tx_flush(wl); |
| wl1251_power_off(wl); |
| |
| memset(wl->bssid, 0, ETH_ALEN); |
| wl->listen_int = 1; |
| wl->bss_type = MAX_BSS_TYPE; |
| |
| wl->data_in_count = 0; |
| wl->rx_counter = 0; |
| wl->rx_handled = 0; |
| wl->rx_current_buffer = 0; |
| wl->rx_last_id = 0; |
| wl->next_tx_complete = 0; |
| wl->elp = false; |
| wl->psm = 0; |
| wl->tx_queue_stopped = false; |
| wl->power_level = WL1251_DEFAULT_POWER_LEVEL; |
| wl->channel = WL1251_DEFAULT_CHANNEL; |
| |
| wl1251_debugfs_reset(wl); |
| |
| mutex_unlock(&wl->mutex); |
| } |
| |
| static int wl1251_op_add_interface(struct ieee80211_hw *hw, |
| struct ieee80211_if_init_conf *conf) |
| { |
| struct wl1251 *wl = hw->priv; |
| int ret = 0; |
| |
| wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", |
| conf->type, conf->mac_addr); |
| |
| mutex_lock(&wl->mutex); |
| |
| switch (conf->type) { |
| case NL80211_IFTYPE_STATION: |
| wl->bss_type = BSS_TYPE_STA_BSS; |
| break; |
| case NL80211_IFTYPE_ADHOC: |
| wl->bss_type = BSS_TYPE_IBSS; |
| break; |
| default: |
| ret = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) { |
| memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN); |
| SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); |
| ret = wl1251_acx_station_id(wl); |
| if (ret < 0) |
| goto out; |
| } |
| |
| out: |
| mutex_unlock(&wl->mutex); |
| return ret; |
| } |
| |
| static void wl1251_op_remove_interface(struct ieee80211_hw *hw, |
| struct ieee80211_if_init_conf *conf) |
| { |
| wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface"); |
| } |
| |
| static int wl1251_build_null_data(struct wl1251 *wl) |
| { |
| struct wl12xx_null_data_template template; |
| |
| if (!is_zero_ether_addr(wl->bssid)) { |
| memcpy(template.header.da, wl->bssid, ETH_ALEN); |
| memcpy(template.header.bssid, wl->bssid, ETH_ALEN); |
| } else { |
| memset(template.header.da, 0xff, ETH_ALEN); |
| memset(template.header.bssid, 0xff, ETH_ALEN); |
| } |
| |
| memcpy(template.header.sa, wl->mac_addr, ETH_ALEN); |
| template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA | |
| IEEE80211_STYPE_NULLFUNC); |
| |
| return wl1251_cmd_template_set(wl, CMD_NULL_DATA, &template, |
| sizeof(template)); |
| |
| } |
| |
| static int wl1251_build_ps_poll(struct wl1251 *wl, u16 aid) |
| { |
| struct wl12xx_ps_poll_template template; |
| |
| memcpy(template.bssid, wl->bssid, ETH_ALEN); |
| memcpy(template.ta, wl->mac_addr, ETH_ALEN); |
| template.aid = aid; |
| template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL); |
| |
| return wl1251_cmd_template_set(wl, CMD_PS_POLL, &template, |
| sizeof(template)); |
| |
| } |
| |
| static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) |
| { |
| struct wl1251 *wl = hw->priv; |
| struct ieee80211_conf *conf = &hw->conf; |
| int channel, ret = 0; |
| |
| channel = ieee80211_frequency_to_channel(conf->channel->center_freq); |
| |
| wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d", |
| channel, |
| conf->flags & IEEE80211_CONF_PS ? "on" : "off", |
| conf->power_level); |
| |
| mutex_lock(&wl->mutex); |
| |
| ret = wl1251_ps_elp_wakeup(wl); |
| if (ret < 0) |
| goto out; |
| |
| if (channel != wl->channel) { |
| wl->channel = channel; |
| |
| ret = wl1251_join(wl, wl->bss_type, wl->channel, |
| wl->beacon_int, wl->dtim_period); |
| if (ret < 0) |
| goto out_sleep; |
| } |
| |
| ret = wl1251_build_null_data(wl); |
| if (ret < 0) |
| goto out_sleep; |
| |
| if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) { |
| wl1251_debug(DEBUG_PSM, "psm enabled"); |
| |
| wl->psm_requested = true; |
| |
| /* |
| * We enter PSM only if we're already associated. |
| * If we're not, we'll enter it when joining an SSID, |
| * through the bss_info_changed() hook. |
| */ |
| ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); |
| } else if (!(conf->flags & IEEE80211_CONF_PS) && |
| wl->psm_requested) { |
| wl1251_debug(DEBUG_PSM, "psm disabled"); |
| |
| wl->psm_requested = false; |
| |
| if (wl->psm) |
| ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); |
| } |
| |
| if (conf->power_level != wl->power_level) { |
| ret = wl1251_acx_tx_power(wl, conf->power_level); |
| if (ret < 0) |
| goto out; |
| |
| wl->power_level = conf->power_level; |
| } |
| |
| out_sleep: |
| wl1251_ps_elp_sleep(wl); |
| |
| out: |
| mutex_unlock(&wl->mutex); |
| |
| return ret; |
| } |
| |
| #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ |
| FIF_ALLMULTI | \ |
| FIF_FCSFAIL | \ |
| FIF_BCN_PRBRESP_PROMISC | \ |
| FIF_CONTROL | \ |
| FIF_OTHER_BSS) |
| |
| static void wl1251_op_configure_filter(struct ieee80211_hw *hw, |
| unsigned int changed, |
| unsigned int *total,u64 multicast) |
| { |
| struct wl1251 *wl = hw->priv; |
| |
| wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter"); |
| |
| *total &= WL1251_SUPPORTED_FILTERS; |
| changed &= WL1251_SUPPORTED_FILTERS; |
| |
| if (changed == 0) |
| /* no filters which we support changed */ |
| return; |
| |
| /* FIXME: wl->rx_config and wl->rx_filter are not protected */ |
| |
| wl->rx_config = WL1251_DEFAULT_RX_CONFIG; |
| wl->rx_filter = WL1251_DEFAULT_RX_FILTER; |
| |
| if (*total & FIF_PROMISC_IN_BSS) { |
| wl->rx_config |= CFG_BSSID_FILTER_EN; |
| wl->rx_config |= CFG_RX_ALL_GOOD; |
| } |
| if (*total & FIF_ALLMULTI) |
| /* |
| * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive |
| * all multicast frames |
| */ |
| wl->rx_config &= ~CFG_MC_FILTER_EN; |
| if (*total & FIF_FCSFAIL) |
| wl->rx_filter |= CFG_RX_FCS_ERROR; |
| if (*total & FIF_BCN_PRBRESP_PROMISC) { |
| wl->rx_config &= ~CFG_BSSID_FILTER_EN; |
| wl->rx_config &= ~CFG_SSID_FILTER_EN; |
| } |
| if (*total & FIF_CONTROL) |
| wl->rx_filter |= CFG_RX_CTL_EN; |
| if (*total & FIF_OTHER_BSS) |
| wl->rx_filter &= ~CFG_BSSID_FILTER_EN; |
| |
| /* |
| * FIXME: workqueues need to be properly cancelled on stop(), for |
| * now let's just disable changing the filter settings. They will |
| * be updated any on config(). |
| */ |
| /* schedule_work(&wl->filter_work); */ |
| } |
| |
| /* HW encryption */ |
| static int wl1251_set_key_type(struct wl1251 *wl, |
| struct wl1251_cmd_set_keys *key, |
| enum set_key_cmd cmd, |
| struct ieee80211_key_conf *mac80211_key, |
| const u8 *addr) |
| { |
| switch (mac80211_key->alg) { |
| case ALG_WEP: |
| if (is_broadcast_ether_addr(addr)) |
| key->key_type = KEY_WEP_DEFAULT; |
| else |
| key->key_type = KEY_WEP_ADDR; |
| |
| mac80211_key->hw_key_idx = mac80211_key->keyidx; |
| break; |
| case ALG_TKIP: |
| if (is_broadcast_ether_addr(addr)) |
| key->key_type = KEY_TKIP_MIC_GROUP; |
| else |
| key->key_type = KEY_TKIP_MIC_PAIRWISE; |
| |
| mac80211_key->hw_key_idx = mac80211_key->keyidx; |
| break; |
| case ALG_CCMP: |
| if (is_broadcast_ether_addr(addr)) |
| key->key_type = KEY_AES_GROUP; |
| else |
| key->key_type = KEY_AES_PAIRWISE; |
| mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| break; |
| default: |
| wl1251_error("Unknown key algo 0x%x", mac80211_key->alg); |
| return -EOPNOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
| struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta, |
| struct ieee80211_key_conf *key) |
| { |
| struct wl1251 *wl = hw->priv; |
| struct wl1251_cmd_set_keys *wl_cmd; |
| const u8 *addr; |
| int ret; |
| |
| static const u8 bcast_addr[ETH_ALEN] = |
| { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
| |
| wl1251_debug(DEBUG_MAC80211, "mac80211 set key"); |
| |
| wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL); |
| if (!wl_cmd) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| addr = sta ? sta->addr : bcast_addr; |
| |
| wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); |
| wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); |
| wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", |
| key->alg, key->keyidx, key->keylen, key->flags); |
| wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen); |
| |
| if (is_zero_ether_addr(addr)) { |
| /* We dont support TX only encryption */ |
| ret = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| mutex_lock(&wl->mutex); |
| |
| ret = wl1251_ps_elp_wakeup(wl); |
| if (ret < 0) |
| goto out_unlock; |
| |
| switch (cmd) { |
| case SET_KEY: |
| wl_cmd->key_action = KEY_ADD_OR_REPLACE; |
| break; |
| case DISABLE_KEY: |
| wl_cmd->key_action = KEY_REMOVE; |
| break; |
| default: |
| wl1251_error("Unsupported key cmd 0x%x", cmd); |
| break; |
| } |
| |
| ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr); |
| if (ret < 0) { |
| wl1251_error("Set KEY type failed"); |
| goto out_sleep; |
| } |
| |
| if (wl_cmd->key_type != KEY_WEP_DEFAULT) |
| memcpy(wl_cmd->addr, addr, ETH_ALEN); |
| |
| if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || |
| (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { |
| /* |
| * We get the key in the following form: |
| * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) |
| * but the target is expecting: |
| * TKIP - RX MIC - TX MIC |
| */ |
| memcpy(wl_cmd->key, key->key, 16); |
| memcpy(wl_cmd->key + 16, key->key + 24, 8); |
| memcpy(wl_cmd->key + 24, key->key + 16, 8); |
| |
| } else { |
| memcpy(wl_cmd->key, key->key, key->keylen); |
| } |
| wl_cmd->key_size = key->keylen; |
| |
| wl_cmd->id = key->keyidx; |
| wl_cmd->ssid_profile = 0; |
| |
| wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd)); |
| |
| ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd)); |
| if (ret < 0) { |
| wl1251_warning("could not set keys"); |
| goto out_sleep; |
| } |
| |
| out_sleep: |
| wl1251_ps_elp_sleep(wl); |
| |
| out_unlock: |
| mutex_unlock(&wl->mutex); |
| |
| out: |
| kfree(wl_cmd); |
| |
| return ret; |
| } |
| |
| static int wl1251_build_basic_rates(char *rates) |
| { |
| u8 index = 0; |
| |
| rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB; |
| rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB; |
| rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB; |
| rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB; |
| |
| return index; |
| } |
| |
| static int wl1251_build_extended_rates(char *rates) |
| { |
| u8 index = 0; |
| |
| rates[index++] = IEEE80211_OFDM_RATE_6MB; |
| rates[index++] = IEEE80211_OFDM_RATE_9MB; |
| rates[index++] = IEEE80211_OFDM_RATE_12MB; |
| rates[index++] = IEEE80211_OFDM_RATE_18MB; |
| rates[index++] = IEEE80211_OFDM_RATE_24MB; |
| rates[index++] = IEEE80211_OFDM_RATE_36MB; |
| rates[index++] = IEEE80211_OFDM_RATE_48MB; |
| rates[index++] = IEEE80211_OFDM_RATE_54MB; |
| |
| return index; |
| } |
| |
| |
| static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len) |
| { |
| struct wl12xx_probe_req_template template; |
| struct wl12xx_ie_rates *rates; |
| char *ptr; |
| u16 size; |
| |
| ptr = (char *)&template; |
| size = sizeof(struct ieee80211_header); |
| |
| memset(template.header.da, 0xff, ETH_ALEN); |
| memset(template.header.bssid, 0xff, ETH_ALEN); |
| memcpy(template.header.sa, wl->mac_addr, ETH_ALEN); |
| template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); |
| |
| /* IEs */ |
| /* SSID */ |
| template.ssid.header.id = WLAN_EID_SSID; |
| template.ssid.header.len = ssid_len; |
| if (ssid_len && ssid) |
| memcpy(template.ssid.ssid, ssid, ssid_len); |
| size += sizeof(struct wl12xx_ie_header) + ssid_len; |
| ptr += size; |
| |
| /* Basic Rates */ |
| rates = (struct wl12xx_ie_rates *)ptr; |
| rates->header.id = WLAN_EID_SUPP_RATES; |
| rates->header.len = wl1251_build_basic_rates(rates->rates); |
| size += sizeof(struct wl12xx_ie_header) + rates->header.len; |
| ptr += sizeof(struct wl12xx_ie_header) + rates->header.len; |
| |
| /* Extended rates */ |
| rates = (struct wl12xx_ie_rates *)ptr; |
| rates->header.id = WLAN_EID_EXT_SUPP_RATES; |
| rates->header.len = wl1251_build_extended_rates(rates->rates); |
| size += sizeof(struct wl12xx_ie_header) + rates->header.len; |
| |
| wl1251_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size); |
| |
| return wl1251_cmd_template_set(wl, CMD_PROBE_REQ, &template, |
| size); |
| } |
| |
| static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len, |
| u8 active_scan, u8 high_prio, u8 num_channels, |
| u8 probe_requests) |
| { |
| struct wl1251_cmd_trigger_scan_to *trigger = NULL; |
| struct cmd_scan *params = NULL; |
| int i, ret; |
| u16 scan_options = 0; |
| |
| if (wl->scanning) |
| return -EINVAL; |
| |
| params = kzalloc(sizeof(*params), GFP_KERNEL); |
| if (!params) |
| return -ENOMEM; |
| |
| params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD); |
| params->params.rx_filter_options = |
| cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN); |
| |
| /* High priority scan */ |
| if (!active_scan) |
| scan_options |= SCAN_PASSIVE; |
| if (high_prio) |
| scan_options |= SCAN_PRIORITY_HIGH; |
| params->params.scan_options = scan_options; |
| |
| params->params.num_channels = num_channels; |
| params->params.num_probe_requests = probe_requests; |
| params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */ |
| params->params.tid_trigger = 0; |
| |
| for (i = 0; i < num_channels; i++) { |
| params->channels[i].min_duration = cpu_to_le32(30000); |
| params->channels[i].max_duration = cpu_to_le32(60000); |
| memset(¶ms->channels[i].bssid_lsb, 0xff, 4); |
| memset(¶ms->channels[i].bssid_msb, 0xff, 2); |
| params->channels[i].early_termination = 0; |
| params->channels[i].tx_power_att = 0; |
| params->channels[i].channel = i + 1; |
| memset(params->channels[i].pad, 0, 3); |
| } |
| |
| for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++) |
| memset(¶ms->channels[i], 0, |
| sizeof(struct basic_scan_channel_parameters)); |
| |
| if (len && ssid) { |
| params->params.ssid_len = len; |
| memcpy(params->params.ssid, ssid, len); |
| } else { |
| params->params.ssid_len = 0; |
| memset(params->params.ssid, 0, 32); |
| } |
| |
| ret = wl1251_build_probe_req(wl, ssid, len); |
| if (ret < 0) { |
| wl1251_error("PROBE request template failed"); |
| goto out; |
| } |
| |
| trigger = kzalloc(sizeof(*trigger), GFP_KERNEL); |
| if (!trigger) |
| goto out; |
| |
| trigger->timeout = 0; |
| |
| ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger, |
| sizeof(*trigger)); |
| if (ret < 0) { |
| wl1251_error("trigger scan to failed for hw scan"); |
| goto out; |
| } |
| |
| wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params)); |
| |
| wl->scanning = true; |
| |
| ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params)); |
| if (ret < 0) |
| wl1251_error("SCAN failed"); |
| |
| wl1251_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params)); |
| |
| if (params->header.status != CMD_STATUS_SUCCESS) { |
| wl1251_error("TEST command answer error: %d", |
| params->header.status); |
| wl->scanning = false; |
| ret = -EIO; |
| goto out; |
| } |
| |
| out: |
| kfree(params); |
| return ret; |
| |
| } |
| |
| static int wl1251_op_hw_scan(struct ieee80211_hw *hw, |
| struct cfg80211_scan_request *req) |
| { |
| struct wl1251 *wl = hw->priv; |
| int ret; |
| u8 *ssid = NULL; |
| size_t ssid_len = 0; |
| |
| wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan"); |
| |
| if (req->n_ssids) { |
| ssid = req->ssids[0].ssid; |
| ssid_len = req->ssids[0].ssid_len; |
| } |
| |
| mutex_lock(&wl->mutex); |
| |
| ret = wl1251_ps_elp_wakeup(wl); |
| if (ret < 0) |
| goto out; |
| |
| ret = wl1251_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3); |
| |
| wl1251_ps_elp_sleep(wl); |
| |
| out: |
| mutex_unlock(&wl->mutex); |
| |
| return ret; |
| } |
| |
| static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) |
| { |
| struct wl1251 *wl = hw->priv; |
| int ret; |
| |
| mutex_lock(&wl->mutex); |
| |
| ret = wl1251_ps_elp_wakeup(wl); |
| if (ret < 0) |
| goto out; |
| |
| ret = wl1251_acx_rts_threshold(wl, (u16) value); |
| if (ret < 0) |
| wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret); |
| |
| wl1251_ps_elp_sleep(wl); |
| |
| out: |
| mutex_unlock(&wl->mutex); |
| |
| return ret; |
| } |
| |
| static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *bss_conf, |
| u32 changed) |
| { |
| enum wl1251_cmd_ps_mode mode; |
| struct wl1251 *wl = hw->priv; |
| struct sk_buff *beacon; |
| int ret; |
| |
| wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed"); |
| |
| mutex_lock(&wl->mutex); |
| |
| ret = wl1251_ps_elp_wakeup(wl); |
| if (ret < 0) |
| goto out; |
| |
| if (changed & BSS_CHANGED_ASSOC) { |
| if (bss_conf->assoc) { |
| wl->beacon_int = bss_conf->beacon_int; |
| wl->dtim_period = bss_conf->dtim_period; |
| |
| /* FIXME: call join */ |
| |
| wl->aid = bss_conf->aid; |
| |
| ret = wl1251_build_ps_poll(wl, wl->aid); |
| if (ret < 0) |
| goto out_sleep; |
| |
| ret = wl1251_acx_aid(wl, wl->aid); |
| if (ret < 0) |
| goto out_sleep; |
| |
| /* If we want to go in PSM but we're not there yet */ |
| if (wl->psm_requested && !wl->psm) { |
| mode = STATION_POWER_SAVE_MODE; |
| ret = wl1251_ps_set_mode(wl, mode); |
| if (ret < 0) |
| goto out_sleep; |
| } |
| } else { |
| /* use defaults when not associated */ |
| wl->beacon_int = WL1251_DEFAULT_BEACON_INT; |
| wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; |
| } |
| } |
| if (changed & BSS_CHANGED_ERP_SLOT) { |
| if (bss_conf->use_short_slot) |
| ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT); |
| else |
| ret = wl1251_acx_slot(wl, SLOT_TIME_LONG); |
| if (ret < 0) { |
| wl1251_warning("Set slot time failed %d", ret); |
| goto out_sleep; |
| } |
| } |
| |
| if (changed & BSS_CHANGED_ERP_PREAMBLE) { |
| if (bss_conf->use_short_preamble) |
| wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); |
| else |
| wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG); |
| } |
| |
| if (changed & BSS_CHANGED_ERP_CTS_PROT) { |
| if (bss_conf->use_cts_prot) |
| ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE); |
| else |
| ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE); |
| if (ret < 0) { |
| wl1251_warning("Set ctsprotect failed %d", ret); |
| goto out; |
| } |
| } |
| |
| if (changed & BSS_CHANGED_BSSID) { |
| memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); |
| |
| ret = wl1251_build_null_data(wl); |
| if (ret < 0) |
| goto out; |
| |
| if (wl->bss_type != BSS_TYPE_IBSS) { |
| ret = wl1251_join(wl, wl->bss_type, wl->channel, |
| wl->beacon_int, wl->dtim_period); |
| if (ret < 0) |
| goto out_sleep; |
| wl1251_warning("Set ctsprotect failed %d", ret); |
| goto out_sleep; |
| } |
| } |
| |
| if (changed & BSS_CHANGED_BEACON) { |
| beacon = ieee80211_beacon_get(hw, vif); |
| ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, |
| beacon->len); |
| |
| if (ret < 0) { |
| dev_kfree_skb(beacon); |
| goto out; |
| } |
| |
| ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data, |
| beacon->len); |
| |
| dev_kfree_skb(beacon); |
| |
| if (ret < 0) |
| goto out; |
| |
| ret = wl1251_join(wl, wl->bss_type, wl->beacon_int, |
| wl->channel, wl->dtim_period); |
| |
| if (ret < 0) |
| goto out; |
| } |
| |
| out_sleep: |
| wl1251_ps_elp_sleep(wl); |
| |
| out: |
| mutex_unlock(&wl->mutex); |
| } |
| |
| |
| /* can't be const, mac80211 writes to this */ |
| static struct ieee80211_rate wl1251_rates[] = { |
| { .bitrate = 10, |
| .hw_value = 0x1, |
| .hw_value_short = 0x1, }, |
| { .bitrate = 20, |
| .hw_value = 0x2, |
| .hw_value_short = 0x2, |
| .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| { .bitrate = 55, |
| .hw_value = 0x4, |
| .hw_value_short = 0x4, |
| .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| { .bitrate = 110, |
| .hw_value = 0x20, |
| .hw_value_short = 0x20, |
| .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| { .bitrate = 60, |
| .hw_value = 0x8, |
| .hw_value_short = 0x8, }, |
| { .bitrate = 90, |
| .hw_value = 0x10, |
| .hw_value_short = 0x10, }, |
| { .bitrate = 120, |
| .hw_value = 0x40, |
| .hw_value_short = 0x40, }, |
| { .bitrate = 180, |
| .hw_value = 0x80, |
| .hw_value_short = 0x80, }, |
| { .bitrate = 240, |
| .hw_value = 0x200, |
| .hw_value_short = 0x200, }, |
| { .bitrate = 360, |
| .hw_value = 0x400, |
| .hw_value_short = 0x400, }, |
| { .bitrate = 480, |
| .hw_value = 0x800, |
| .hw_value_short = 0x800, }, |
| { .bitrate = 540, |
| .hw_value = 0x1000, |
| .hw_value_short = 0x1000, }, |
| }; |
| |
| /* can't be const, mac80211 writes to this */ |
| static struct ieee80211_channel wl1251_channels[] = { |
| { .hw_value = 1, .center_freq = 2412}, |
| { .hw_value = 2, .center_freq = 2417}, |
| { .hw_value = 3, .center_freq = 2422}, |
| { .hw_value = 4, .center_freq = 2427}, |
| { .hw_value = 5, .center_freq = 2432}, |
| { .hw_value = 6, .center_freq = 2437}, |
| { .hw_value = 7, .center_freq = 2442}, |
| { .hw_value = 8, .center_freq = 2447}, |
| { .hw_value = 9, .center_freq = 2452}, |
| { .hw_value = 10, .center_freq = 2457}, |
| { .hw_value = 11, .center_freq = 2462}, |
| { .hw_value = 12, .center_freq = 2467}, |
| { .hw_value = 13, .center_freq = 2472}, |
| }; |
| |
| /* can't be const, mac80211 writes to this */ |
| static struct ieee80211_supported_band wl1251_band_2ghz = { |
| .channels = wl1251_channels, |
| .n_channels = ARRAY_SIZE(wl1251_channels), |
| .bitrates = wl1251_rates, |
| .n_bitrates = ARRAY_SIZE(wl1251_rates), |
| }; |
| |
| static const struct ieee80211_ops wl1251_ops = { |
| .start = wl1251_op_start, |
| .stop = wl1251_op_stop, |
| .add_interface = wl1251_op_add_interface, |
| .remove_interface = wl1251_op_remove_interface, |
| .config = wl1251_op_config, |
| .configure_filter = wl1251_op_configure_filter, |
| .tx = wl1251_op_tx, |
| .set_key = wl1251_op_set_key, |
| .hw_scan = wl1251_op_hw_scan, |
| .bss_info_changed = wl1251_op_bss_info_changed, |
| .set_rts_threshold = wl1251_op_set_rts_threshold, |
| }; |
| |
| static int wl1251_register_hw(struct wl1251 *wl) |
| { |
| int ret; |
| |
| if (wl->mac80211_registered) |
| return 0; |
| |
| SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); |
| |
| ret = ieee80211_register_hw(wl->hw); |
| if (ret < 0) { |
| wl1251_error("unable to register mac80211 hw: %d", ret); |
| return ret; |
| } |
| |
| wl->mac80211_registered = true; |
| |
| wl1251_notice("loaded"); |
| |
| return 0; |
| } |
| |
| int wl1251_init_ieee80211(struct wl1251 *wl) |
| { |
| int ret; |
| |
| /* The tx descriptor buffer and the TKIP space */ |
| wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) |
| + WL1251_TKIP_IV_SPACE; |
| |
| /* unit us */ |
| /* FIXME: find a proper value */ |
| wl->hw->channel_change_time = 10000; |
| |
| wl->hw->flags = IEEE80211_HW_SIGNAL_DBM | |
| IEEE80211_HW_NOISE_DBM | |
| IEEE80211_HW_SUPPORTS_PS; |
| |
| wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); |
| wl->hw->wiphy->max_scan_ssids = 1; |
| wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz; |
| |
| ret = wl1251_register_hw(wl); |
| if (ret) |
| goto out; |
| |
| wl1251_debugfs_init(wl); |
| wl1251_notice("initialized"); |
| |
| ret = 0; |
| |
| out: |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); |
| |
| struct ieee80211_hw *wl1251_alloc_hw(void) |
| { |
| struct ieee80211_hw *hw; |
| struct wl1251 *wl; |
| int i; |
| static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; |
| |
| hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops); |
| if (!hw) { |
| wl1251_error("could not alloc ieee80211_hw"); |
| return ERR_PTR(-ENOMEM); |
| } |
| |
| wl = hw->priv; |
| memset(wl, 0, sizeof(*wl)); |
| |
| wl->hw = hw; |
| |
| wl->data_in_count = 0; |
| |
| skb_queue_head_init(&wl->tx_queue); |
| |
| INIT_WORK(&wl->filter_work, wl1251_filter_work); |
| wl->channel = WL1251_DEFAULT_CHANNEL; |
| wl->scanning = false; |
| wl->default_key = 0; |
| wl->listen_int = 1; |
| wl->rx_counter = 0; |
| wl->rx_handled = 0; |
| wl->rx_current_buffer = 0; |
| wl->rx_last_id = 0; |
| wl->rx_config = WL1251_DEFAULT_RX_CONFIG; |
| wl->rx_filter = WL1251_DEFAULT_RX_FILTER; |
| wl->elp = false; |
| wl->psm = 0; |
| wl->psm_requested = false; |
| wl->tx_queue_stopped = false; |
| wl->power_level = WL1251_DEFAULT_POWER_LEVEL; |
| wl->beacon_int = WL1251_DEFAULT_BEACON_INT; |
| wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; |
| |
| for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) |
| wl->tx_frames[i] = NULL; |
| |
| wl->next_tx_complete = 0; |
| |
| INIT_WORK(&wl->irq_work, wl1251_irq_work); |
| INIT_WORK(&wl->tx_work, wl1251_tx_work); |
| |
| /* |
| * In case our MAC address is not correctly set, |
| * we use a random but Nokia MAC. |
| */ |
| memcpy(wl->mac_addr, nokia_oui, 3); |
| get_random_bytes(wl->mac_addr + 3, 3); |
| |
| wl->state = WL1251_STATE_OFF; |
| mutex_init(&wl->mutex); |
| |
| wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE; |
| wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE; |
| |
| wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); |
| if (!wl->rx_descriptor) { |
| wl1251_error("could not allocate memory for rx descriptor"); |
| ieee80211_free_hw(hw); |
| return ERR_PTR(-ENOMEM); |
| } |
| |
| return hw; |
| } |
| EXPORT_SYMBOL_GPL(wl1251_alloc_hw); |
| |
| int wl1251_free_hw(struct wl1251 *wl) |
| { |
| ieee80211_unregister_hw(wl->hw); |
| |
| wl1251_debugfs_exit(wl); |
| |
| kfree(wl->target_mem_map); |
| kfree(wl->data_path); |
| kfree(wl->fw); |
| wl->fw = NULL; |
| kfree(wl->nvs); |
| wl->nvs = NULL; |
| |
| kfree(wl->rx_descriptor); |
| wl->rx_descriptor = NULL; |
| |
| ieee80211_free_hw(wl->hw); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(wl1251_free_hw); |
| |
| MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core"); |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>"); |
| MODULE_ALIAS("spi:wl1251"); |