wl12xx: add driver
wl12xx is a driver for TI wl1251 802.11 chipset designed for embedded
devices, supporting both SDIO and SPI busses. Currently the driver
supports only SPI. Adding support 1253 (the 5 GHz version) should be
relatively easy. More information here:
http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?contentId=4711&navigationId=12494&templateId=6123
(Collapsed original sequence of pre-merge patches into single commit for
initial merge. -- JWL)
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
new file mode 100644
index 0000000..744f4ce
--- /dev/null
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -0,0 +1,1358 @@
+/*
+ * This file is part of wl12xx
+ *
+ * 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/spi/spi.h>
+#include <linux/crc32.h>
+#include <linux/etherdevice.h>
+#include <linux/spi/wl12xx.h>
+
+#include "wl12xx.h"
+#include "wl12xx_80211.h"
+#include "reg.h"
+#include "wl1251.h"
+#include "spi.h"
+#include "event.h"
+#include "tx.h"
+#include "rx.h"
+#include "ps.h"
+#include "init.h"
+#include "debugfs.h"
+
+static void wl12xx_disable_interrupts(struct wl12xx *wl)
+{
+ disable_irq(wl->irq);
+}
+
+static void wl12xx_power_off(struct wl12xx *wl)
+{
+ wl->set_power(false);
+}
+
+static void wl12xx_power_on(struct wl12xx *wl)
+{
+ wl->set_power(true);
+}
+
+static irqreturn_t wl12xx_irq(int irq, void *cookie)
+{
+ struct wl12xx *wl;
+
+ wl12xx_debug(DEBUG_IRQ, "IRQ");
+
+ wl = cookie;
+
+ schedule_work(&wl->irq_work);
+
+ return IRQ_HANDLED;
+}
+
+static int wl12xx_fetch_firmware(struct wl12xx *wl)
+{
+ const struct firmware *fw;
+ int ret;
+
+ ret = request_firmware(&fw, wl->chip.fw_filename, &wl->spi->dev);
+
+ if (ret < 0) {
+ wl12xx_error("could not get firmware: %d", ret);
+ return ret;
+ }
+
+ if (fw->size % 4) {
+ wl12xx_error("firmware size is not multiple of 32 bits: %d",
+ fw->size);
+ ret = -EILSEQ;
+ goto out;
+ }
+
+ wl->fw_len = fw->size;
+ wl->fw = kmalloc(wl->fw_len, GFP_KERNEL);
+
+ if (!wl->fw) {
+ wl12xx_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 wl12xx_fetch_nvs(struct wl12xx *wl)
+{
+ const struct firmware *fw;
+ int ret;
+
+ ret = request_firmware(&fw, wl->chip.nvs_filename, &wl->spi->dev);
+
+ if (ret < 0) {
+ wl12xx_error("could not get nvs file: %d", ret);
+ return ret;
+ }
+
+ if (fw->size % 4) {
+ wl12xx_error("nvs size is not multiple of 32 bits: %d",
+ fw->size);
+ ret = -EILSEQ;
+ goto out;
+ }
+
+ wl->nvs_len = fw->size;
+ wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
+
+ if (!wl->nvs) {
+ wl12xx_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 wl12xx_fw_wakeup(struct wl12xx *wl)
+{
+ u32 elp_reg;
+
+ elp_reg = ELPCTRL_WAKE_UP;
+ wl12xx_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
+ elp_reg = wl12xx_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
+
+ if (!(elp_reg & ELPCTRL_WLAN_READY)) {
+ wl12xx_warning("WLAN not ready");
+ elp_reg = ELPCTRL_WAKE_UP_WLAN_READY;
+ wl12xx_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
+ }
+}
+
+static int wl12xx_chip_wakeup(struct wl12xx *wl)
+{
+ int ret = 0;
+
+ wl12xx_power_on(wl);
+ msleep(wl->chip.power_on_sleep);
+ wl12xx_spi_reset(wl);
+ wl12xx_spi_init(wl);
+
+ /* We don't need a real memory partition here, because we only want
+ * to use the registers at this point. */
+ wl12xx_set_partition(wl,
+ 0x00000000,
+ 0x00000000,
+ REGISTERS_BASE,
+ REGISTERS_DOWN_SIZE);
+
+ /* ELP module wake up */
+ wl12xx_fw_wakeup(wl);
+
+ /* whal_FwCtrl_BootSm() */
+
+ /* 0. read chip id from CHIP_ID */
+ wl->chip.id = wl12xx_reg_read32(wl, CHIP_ID_B);
+
+ /* 1. check if chip id is valid */
+
+ switch (wl->chip.id) {
+ case CHIP_ID_1251_PG12:
+ wl12xx_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
+ wl->chip.id);
+
+ wl1251_setup(wl);
+
+ break;
+ case CHIP_ID_1271_PG10:
+ case CHIP_ID_1251_PG10:
+ case CHIP_ID_1251_PG11:
+ default:
+ wl12xx_error("unsupported chip id: 0x%x", wl->chip.id);
+ ret = -ENODEV;
+ goto out;
+ }
+
+ if (wl->fw == NULL) {
+ ret = wl12xx_fetch_firmware(wl);
+ if (ret < 0)
+ goto out;
+ }
+
+ /* No NVS from netlink, try to get it from the filesystem */
+ if (wl->nvs == NULL) {
+ ret = wl12xx_fetch_nvs(wl);
+ if (ret < 0)
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+static void wl12xx_filter_work(struct work_struct *work)
+{
+ struct wl12xx *wl =
+ container_of(work, struct wl12xx, filter_work);
+ int ret;
+
+ mutex_lock(&wl->mutex);
+
+ if (wl->state == WL12XX_STATE_OFF)
+ goto out;
+
+ ret = wl12xx_cmd_join(wl, wl->bss_type, 1, 100, 0);
+ if (ret < 0)
+ goto out;
+
+out:
+ mutex_unlock(&wl->mutex);
+}
+
+int wl12xx_plt_start(struct wl12xx *wl)
+{
+ int ret;
+
+ wl12xx_notice("power up");
+
+ if (wl->state != WL12XX_STATE_OFF) {
+ wl12xx_error("cannot go into PLT state because not "
+ "in off state: %d", wl->state);
+ return -EBUSY;
+ }
+
+ wl->state = WL12XX_STATE_PLT;
+
+ ret = wl12xx_chip_wakeup(wl);
+ if (ret < 0)
+ return ret;
+
+ ret = wl->chip.op_boot(wl);
+ if (ret < 0)
+ return ret;
+
+ wl12xx_notice("firmware booted in PLT mode (%s)", wl->chip.fw_ver);
+
+ ret = wl->chip.op_plt_init(wl);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+int wl12xx_plt_stop(struct wl12xx *wl)
+{
+ wl12xx_notice("power down");
+
+ if (wl->state != WL12XX_STATE_PLT) {
+ wl12xx_error("cannot power down because not in PLT "
+ "state: %d", wl->state);
+ return -EBUSY;
+ }
+
+ wl12xx_disable_interrupts(wl);
+ wl12xx_power_off(wl);
+
+ wl->state = WL12XX_STATE_OFF;
+
+ return 0;
+}
+
+
+static int wl12xx_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+ struct wl12xx *wl = hw->priv;
+
+ skb_queue_tail(&wl->tx_queue, skb);
+
+ schedule_work(&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) >= WL12XX_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 wl12xx_op_start(struct ieee80211_hw *hw)
+{
+ struct wl12xx *wl = hw->priv;
+ int ret = 0;
+
+ wl12xx_debug(DEBUG_MAC80211, "mac80211 start");
+
+ mutex_lock(&wl->mutex);
+
+ if (wl->state != WL12XX_STATE_OFF) {
+ wl12xx_error("cannot start because not in off state: %d",
+ wl->state);
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ret = wl12xx_chip_wakeup(wl);
+ if (ret < 0)
+ return ret;
+
+ ret = wl->chip.op_boot(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl->chip.op_hw_init(wl);
+ if (ret < 0)
+ goto out;
+
+ ret = wl12xx_acx_station_id(wl);
+ if (ret < 0)
+ goto out;
+
+ wl->state = WL12XX_STATE_ON;
+
+ wl12xx_info("firmware booted (%s)", wl->chip.fw_ver);
+
+out:
+ if (ret < 0)
+ wl12xx_power_off(wl);
+
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+}
+
+static void wl12xx_op_stop(struct ieee80211_hw *hw)
+{
+ struct wl12xx *wl = hw->priv;
+
+ wl12xx_info("down");
+
+ wl12xx_debug(DEBUG_MAC80211, "mac80211 stop");
+
+ mutex_lock(&wl->mutex);
+
+ WARN_ON(wl->state != WL12XX_STATE_ON);
+
+ if (wl->scanning) {
+ mutex_unlock(&wl->mutex);
+ ieee80211_scan_completed(wl->hw, true);
+ mutex_lock(&wl->mutex);
+ wl->scanning = false;
+ }
+
+ wl->state = WL12XX_STATE_OFF;
+
+ wl12xx_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 */
+ wl12xx_tx_flush(wl);
+
+ wl12xx_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 = WL12XX_DEFAULT_POWER_LEVEL;
+
+ wl12xx_debugfs_reset(wl);
+
+ mutex_unlock(&wl->mutex);
+}
+
+static int wl12xx_op_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_if_init_conf *conf)
+{
+ struct wl12xx *wl = hw->priv;
+ DECLARE_MAC_BUF(mac);
+ int ret = 0;
+
+ wl12xx_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %s",
+ conf->type, print_mac(mac, 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 = wl12xx_acx_station_id(wl);
+ if (ret < 0)
+ goto out;
+ }
+
+out:
+ mutex_unlock(&wl->mutex);
+ return ret;
+}
+
+static void wl12xx_op_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_if_init_conf *conf)
+{
+ wl12xx_debug(DEBUG_MAC80211, "mac80211 remove interface");
+}
+
+static int wl12xx_build_null_data(struct wl12xx *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 wl12xx_cmd_template_set(wl, CMD_NULL_DATA, &template,
+ sizeof(template));
+
+}
+
+static int wl12xx_build_ps_poll(struct wl12xx *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 wl12xx_cmd_template_set(wl, CMD_PS_POLL, &template,
+ sizeof(template));
+
+}
+
+static int wl12xx_op_config(struct ieee80211_hw *hw, u32 changed)
+{
+ struct wl12xx *wl = hw->priv;
+ struct ieee80211_conf *conf = &hw->conf;
+ int channel, ret = 0;
+
+ channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
+
+ wl12xx_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);
+
+ if (channel != wl->channel) {
+ /* FIXME: use beacon interval provided by mac80211 */
+ ret = wl12xx_cmd_join(wl, wl->bss_type, 1, 100, 0);
+ if (ret < 0)
+ goto out;
+
+ wl->channel = channel;
+ }
+
+ ret = wl12xx_build_null_data(wl);
+ if (ret < 0)
+ goto out;
+
+ if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
+ wl12xx_info("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 = wl12xx_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
+ } else if (!(conf->flags & IEEE80211_CONF_PS) &&
+ wl->psm_requested) {
+ wl12xx_info("psm disabled");
+
+ wl->psm_requested = false;
+
+ if (wl->psm)
+ ret = wl12xx_ps_set_mode(wl, STATION_ACTIVE_MODE);
+ }
+
+ if (conf->power_level != wl->power_level) {
+ ret = wl12xx_acx_tx_power(wl, conf->power_level);
+ if (ret < 0)
+ goto out;
+
+ wl->power_level = conf->power_level;
+ }
+
+out:
+ mutex_unlock(&wl->mutex);
+ return ret;
+}
+
+#define WL12XX_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
+ FIF_ALLMULTI | \
+ FIF_FCSFAIL | \
+ FIF_BCN_PRBRESP_PROMISC | \
+ FIF_CONTROL | \
+ FIF_OTHER_BSS)
+
+static void wl12xx_op_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed,
+ unsigned int *total,
+ int mc_count,
+ struct dev_addr_list *mc_list)
+{
+ struct wl12xx *wl = hw->priv;
+
+ wl12xx_debug(DEBUG_MAC80211, "mac80211 configure filter");
+
+ *total &= WL12XX_SUPPORTED_FILTERS;
+ changed &= WL12XX_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 = WL12XX_DEFAULT_RX_CONFIG;
+ wl->rx_filter = WL12XX_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 wl12xx_set_key_type(struct wl12xx *wl, struct acx_set_key *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:
+ wl12xx_error("Unknown key algo 0x%x", mac80211_key->alg);
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int wl12xx_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 wl12xx *wl = hw->priv;
+ struct acx_set_key wl_key;
+ const u8 *addr;
+ int ret;
+
+ static const u8 bcast_addr[ETH_ALEN] =
+ { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+
+ wl12xx_debug(DEBUG_MAC80211, "mac80211 set key");
+
+ memset(&wl_key, 0, sizeof(wl_key));
+
+ addr = sta ? sta->addr : bcast_addr;
+
+ wl12xx_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
+ wl12xx_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
+ wl12xx_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
+ key->alg, key->keyidx, key->keylen, key->flags);
+ wl12xx_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
+
+ mutex_lock(&wl->mutex);
+
+ switch (cmd) {
+ case SET_KEY:
+ wl_key.key_action = KEY_ADD_OR_REPLACE;
+ break;
+ case DISABLE_KEY:
+ wl_key.key_action = KEY_REMOVE;
+ break;
+ default:
+ wl12xx_error("Unsupported key cmd 0x%x", cmd);
+ break;
+ }
+
+ ret = wl12xx_set_key_type(wl, &wl_key, cmd, key, addr);
+ if (ret < 0) {
+ wl12xx_error("Set KEY type failed");
+ goto out;
+ }
+
+ if (wl_key.key_type != KEY_WEP_DEFAULT)
+ memcpy(wl_key.addr, addr, ETH_ALEN);
+
+ if ((wl_key.key_type == KEY_TKIP_MIC_GROUP) ||
+ (wl_key.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_key.key, key->key, 16);
+ memcpy(wl_key.key + 16, key->key + 24, 8);
+ memcpy(wl_key.key + 24, key->key + 16, 8);
+
+ } else {
+ memcpy(wl_key.key, key->key, key->keylen);
+ }
+ wl_key.key_size = key->keylen;
+
+ wl_key.id = key->keyidx;
+ wl_key.ssid_profile = 0;
+
+ wl12xx_dump(DEBUG_CRYPT, "TARGET KEY: ", &wl_key, sizeof(wl_key));
+
+ if (wl12xx_cmd_send(wl, CMD_SET_KEYS, &wl_key, sizeof(wl_key)) < 0) {
+ wl12xx_error("Set KEY failed");
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+out:
+ mutex_unlock(&wl->mutex);
+ return ret;
+}
+
+static int wl12xx_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 wl12xx_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 wl12xx_build_probe_req(struct wl12xx *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 = wl12xx_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 = wl12xx_build_extended_rates(rates->rates);
+ size += sizeof(struct wl12xx_ie_header) + rates->header.len;
+
+ wl12xx_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
+
+ return wl12xx_cmd_template_set(wl, CMD_PROBE_REQ, &template,
+ size);
+}
+
+static int wl12xx_hw_scan(struct wl12xx *wl, u8 *ssid, size_t len,
+ u8 active_scan, u8 high_prio, u8 num_channels,
+ u8 probe_requests)
+{
+ int i, ret;
+ u32 split_scan = 0;
+ u16 scan_options = 0;
+ struct cmd_scan *params;
+ struct wl12xx_command *cmd_answer;
+
+ 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 = wl12xx_build_probe_req(wl, ssid, len);
+ if (ret < 0) {
+ wl12xx_error("PROBE request template failed");
+ goto out;
+ }
+
+ ret = wl12xx_cmd_send(wl, CMD_TRIGGER_SCAN_TO, &split_scan,
+ sizeof(u32));
+ if (ret < 0) {
+ wl12xx_error("Split SCAN failed");
+ goto out;
+ }
+
+ wl12xx_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
+
+ wl->scanning = true;
+
+ ret = wl12xx_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
+ if (ret < 0)
+ wl12xx_error("SCAN failed");
+
+ wl12xx_spi_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
+
+ cmd_answer = (struct wl12xx_command *) params;
+ if (cmd_answer->status != CMD_STATUS_SUCCESS) {
+ wl12xx_error("TEST command answer error: %d",
+ cmd_answer->status);
+ wl->scanning = false;
+ ret = -EIO;
+ goto out;
+ }
+
+out:
+ kfree(params);
+ return ret;
+
+}
+
+static int wl12xx_op_hw_scan(struct ieee80211_hw *hw,
+ struct cfg80211_scan_request *req)
+{
+ struct wl12xx *wl = hw->priv;
+ int ret;
+ u8 *ssid = NULL;
+ size_t ssid_len = 0;
+
+ wl12xx_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 = wl12xx_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+}
+
+static int wl12xx_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+{
+ struct wl12xx *wl = hw->priv;
+ int ret;
+
+ ret = wl12xx_acx_rts_threshold(wl, (u16) value);
+
+ if (ret < 0)
+ wl12xx_warning("wl12xx_op_set_rts_threshold failed: %d", ret);
+
+ return ret;
+}
+
+static void wl12xx_op_bss_info_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf,
+ u32 changed)
+{
+ enum acx_ps_mode mode;
+ struct wl12xx *wl = hw->priv;
+ struct sk_buff *beacon;
+ int ret;
+
+ wl12xx_debug(DEBUG_MAC80211, "mac80211 bss info changed");
+
+ mutex_lock(&wl->mutex);
+
+ if (changed & BSS_CHANGED_ASSOC) {
+ if (bss_conf->assoc) {
+ wl->aid = bss_conf->aid;
+
+ ret = wl12xx_build_ps_poll(wl, wl->aid);
+ if (ret < 0)
+ goto out;
+
+ ret = wl12xx_acx_aid(wl, wl->aid);
+ if (ret < 0)
+ goto out;
+
+ /* 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 = wl12xx_ps_set_mode(wl, mode);
+ if (ret < 0)
+ goto out;
+ }
+ }
+ }
+ if (changed & BSS_CHANGED_ERP_SLOT) {
+ if (bss_conf->use_short_slot)
+ ret = wl12xx_acx_slot(wl, SLOT_TIME_SHORT);
+ else
+ ret = wl12xx_acx_slot(wl, SLOT_TIME_LONG);
+ if (ret < 0) {
+ wl12xx_warning("Set slot time failed %d", ret);
+ goto out;
+ }
+ }
+
+ if (changed & BSS_CHANGED_ERP_PREAMBLE) {
+ if (bss_conf->use_short_preamble)
+ wl12xx_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
+ else
+ wl12xx_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
+ }
+
+ if (changed & BSS_CHANGED_ERP_CTS_PROT) {
+ if (bss_conf->use_cts_prot)
+ ret = wl12xx_acx_cts_protect(wl, CTSPROTECT_ENABLE);
+ else
+ ret = wl12xx_acx_cts_protect(wl, CTSPROTECT_DISABLE);
+ if (ret < 0) {
+ wl12xx_warning("Set ctsprotect failed %d", ret);
+ goto out;
+ }
+ }
+
+ if (changed & BSS_CHANGED_BSSID) {
+ memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
+
+ ret = wl12xx_build_null_data(wl);
+ if (ret < 0)
+ goto out;
+
+ if (wl->bss_type != BSS_TYPE_IBSS) {
+ ret = wl12xx_cmd_join(wl, wl->bss_type, 5, 100, 1);
+ if (ret < 0)
+ goto out;
+ }
+ }
+
+ if (changed & BSS_CHANGED_BEACON) {
+ beacon = ieee80211_beacon_get(hw, vif);
+ ret = wl12xx_cmd_template_set(wl, CMD_BEACON, beacon->data,
+ beacon->len);
+
+ if (ret < 0) {
+ dev_kfree_skb(beacon);
+ goto out;
+ }
+
+ ret = wl12xx_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
+ beacon->len);
+
+ dev_kfree_skb(beacon);
+
+ if (ret < 0)
+ goto out;
+
+ ret = wl12xx_cmd_join(wl, wl->bss_type, 1, 100, 0);
+
+ if (ret < 0)
+ goto out;
+ }
+
+out:
+ mutex_unlock(&wl->mutex);
+}
+
+
+/* can't be const, mac80211 writes to this */
+static struct ieee80211_rate wl12xx_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 wl12xx_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 wl12xx_band_2ghz = {
+ .channels = wl12xx_channels,
+ .n_channels = ARRAY_SIZE(wl12xx_channels),
+ .bitrates = wl12xx_rates,
+ .n_bitrates = ARRAY_SIZE(wl12xx_rates),
+};
+
+static const struct ieee80211_ops wl12xx_ops = {
+ .start = wl12xx_op_start,
+ .stop = wl12xx_op_stop,
+ .add_interface = wl12xx_op_add_interface,
+ .remove_interface = wl12xx_op_remove_interface,
+ .config = wl12xx_op_config,
+ .configure_filter = wl12xx_op_configure_filter,
+ .tx = wl12xx_op_tx,
+ .set_key = wl12xx_op_set_key,
+ .hw_scan = wl12xx_op_hw_scan,
+ .bss_info_changed = wl12xx_op_bss_info_changed,
+ .set_rts_threshold = wl12xx_op_set_rts_threshold,
+};
+
+static int wl12xx_register_hw(struct wl12xx *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) {
+ wl12xx_error("unable to register mac80211 hw: %d", ret);
+ return ret;
+ }
+
+ wl->mac80211_registered = true;
+
+ wl12xx_notice("loaded");
+
+ return 0;
+}
+
+static int wl12xx_init_ieee80211(struct wl12xx *wl)
+{
+ /* The tx descriptor buffer and the TKIP space */
+ wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
+ + WL12XX_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;
+
+ wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
+ wl->hw->wiphy->max_scan_ssids = 1;
+ wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl12xx_band_2ghz;
+
+ SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
+
+ return 0;
+}
+
+#define WL12XX_DEFAULT_CHANNEL 1
+static int __devinit wl12xx_probe(struct spi_device *spi)
+{
+ struct wl12xx_platform_data *pdata;
+ struct ieee80211_hw *hw;
+ struct wl12xx *wl;
+ int ret, i;
+ static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
+
+ pdata = spi->dev.platform_data;
+ if (!pdata) {
+ wl12xx_error("no platform data");
+ return -ENODEV;
+ }
+
+ hw = ieee80211_alloc_hw(sizeof(*wl), &wl12xx_ops);
+ if (!hw) {
+ wl12xx_error("could not alloc ieee80211_hw");
+ return -ENOMEM;
+ }
+
+ wl = hw->priv;
+ memset(wl, 0, sizeof(*wl));
+
+ wl->hw = hw;
+ dev_set_drvdata(&spi->dev, wl);
+ wl->spi = spi;
+
+ wl->data_in_count = 0;
+
+ skb_queue_head_init(&wl->tx_queue);
+
+ INIT_WORK(&wl->tx_work, wl12xx_tx_work);
+ INIT_WORK(&wl->filter_work, wl12xx_filter_work);
+ wl->channel = WL12XX_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 = WL12XX_DEFAULT_RX_CONFIG;
+ wl->rx_filter = WL12XX_DEFAULT_RX_FILTER;
+ wl->elp = false;
+ wl->psm = 0;
+ wl->psm_requested = false;
+ wl->tx_queue_stopped = false;
+ wl->power_level = WL12XX_DEFAULT_POWER_LEVEL;
+
+ /* We use the default power on sleep time until we know which chip
+ * we're using */
+ wl->chip.power_on_sleep = WL12XX_DEFAULT_POWER_ON_SLEEP;
+
+ for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
+ wl->tx_frames[i] = NULL;
+
+ wl->next_tx_complete = 0;
+
+ /*
+ * 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 = WL12XX_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;
+
+ /* This is the only SPI value that we need to set here, the rest
+ * comes from the board-peripherals file */
+ spi->bits_per_word = 32;
+
+ ret = spi_setup(spi);
+ if (ret < 0) {
+ wl12xx_error("spi_setup failed");
+ goto out_free;
+ }
+
+ wl->set_power = pdata->set_power;
+ if (!wl->set_power) {
+ wl12xx_error("set power function missing in platform data");
+ return -ENODEV;
+ }
+
+ wl->irq = spi->irq;
+ if (wl->irq < 0) {
+ wl12xx_error("irq missing in platform data");
+ return -ENODEV;
+ }
+
+ ret = request_irq(wl->irq, wl12xx_irq, 0, DRIVER_NAME, wl);
+ if (ret < 0) {
+ wl12xx_error("request_irq() failed: %d", ret);
+ goto out_free;
+ }
+
+ set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
+
+ disable_irq(wl->irq);
+
+ ret = wl12xx_init_ieee80211(wl);
+ if (ret)
+ goto out_irq;
+
+ ret = wl12xx_register_hw(wl);
+ if (ret)
+ goto out_irq;
+
+ wl12xx_debugfs_init(wl);
+
+ wl12xx_notice("initialized");
+
+ return 0;
+
+ out_irq:
+ free_irq(wl->irq, wl);
+
+ out_free:
+ ieee80211_free_hw(hw);
+
+ return ret;
+}
+
+static int __devexit wl12xx_remove(struct spi_device *spi)
+{
+ struct wl12xx *wl = dev_get_drvdata(&spi->dev);
+
+ ieee80211_unregister_hw(wl->hw);
+
+ wl12xx_debugfs_exit(wl);
+
+ free_irq(wl->irq, wl);
+ kfree(wl->target_mem_map);
+ kfree(wl->data_path);
+ kfree(wl->fw);
+ wl->fw = NULL;
+ kfree(wl->nvs);
+ wl->nvs = NULL;
+ ieee80211_free_hw(wl->hw);
+
+ return 0;
+}
+
+
+static struct spi_driver wl12xx_spi_driver = {
+ .driver = {
+ .name = "wl12xx",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = wl12xx_probe,
+ .remove = __devexit_p(wl12xx_remove),
+};
+
+static int __init wl12xx_init(void)
+{
+ int ret;
+
+ ret = spi_register_driver(&wl12xx_spi_driver);
+ if (ret < 0) {
+ wl12xx_error("failed to register spi driver: %d", ret);
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+static void __exit wl12xx_exit(void)
+{
+ spi_unregister_driver(&wl12xx_spi_driver);
+
+ wl12xx_notice("unloaded");
+}
+
+module_init(wl12xx_init);
+module_exit(wl12xx_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kalle Valo <Kalle.Valo@nokia.com>, "
+ "Luciano Coelho <luciano.coelho@nokia.com>");