--- /dev/null
+/*
+ * This file is part of wl1251
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * 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 <linux/vmalloc.h>
+#include <linux/slab.h>
+
+#include "wl1251.h"
+#include "wl12xx_80211.h"
+#include "reg.h"
+#include "io.h"
+#include "cmd.h"
+#include "event.h"
+#include "tx.h"
+#include "rx.h"
+#include "ps.h"
+#include "init.h"
+#include "debugfs.h"
+#include "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 = vmalloc(wl->fw_len);
+
+ 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 = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
+
+ if (!wl->nvs) {
+ wl1251_error("could not allocate memory for the nvs file");
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ 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_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
+ elp_reg = wl1251_read_elp(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;
+ }
+
+ if (wl->nvs == NULL && !wl->use_eeprom) {
+ /* No NVS from netlink, try to get it from the filesystem */
+ ret = wl1251_fetch_nvs(wl);
+ if (ret < 0)
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+#define WL1251_IRQ_LOOP_COUNT 10
+static void wl1251_irq_work(struct work_struct *work)
+{
+ u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
+ 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);
+
+ do {
+ 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");
+ 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_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
+ wl1251_event_handle(wl, 0);
+ }
+
+ if (intr & WL1251_ACX_INTR_EVENT_B) {
+ wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
+ wl1251_event_handle(wl, 1);
+ }
+
+ if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
+ wl1251_debug(DEBUG_IRQ,
+ "WL1251_ACX_INTR_INIT_COMPLETE");
+
+ if (--ctr == 0)
+ break;
+
+ intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
+ } while (intr);
+
+out_sleep:
+ wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
+ 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;
+
+ ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
+ if (ret < 0)
+ wl1251_warning("join timeout");
+
+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;
+ unsigned long flags;
+
+ 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_HIGH_WATERMARK) {
+ wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
+
+ spin_lock_irqsave(&wl->wl_lock, flags);
+ ieee80211_stop_queues(wl->hw);
+ wl->tx_queue_stopped = true;
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+ }
+
+ return NETDEV_TX_OK;
+}
+
+static int wl1251_op_start(struct ieee80211_hw *hw)
+{
+ struct wl1251 *wl = hw->priv;
+ struct wiphy *wiphy = hw->wiphy;
+ 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);
+
+ /* update hw/fw version info in wiphy struct */
+ wiphy->hw_version = wl->chip_id;
+ strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
+
+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) {
+ ieee80211_scan_completed(wl->hw, true);
+ 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_vif *vif)
+{
+ struct wl1251 *wl = hw->priv;
+ int ret = 0;
+
+ wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
+ vif->type, vif->addr);
+
+ mutex_lock(&wl->mutex);
+ if (wl->vif) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ wl->vif = vif;
+
+ switch (vif->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, vif->addr, ETH_ALEN)) {
+ memcpy(wl->mac_addr, vif->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_vif *vif)
+{
+ struct wl1251 *wl = hw->priv;
+
+ mutex_lock(&wl->mutex);
+ wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
+ wl->vif = NULL;
+ mutex_unlock(&wl->mutex);
+}
+
+static int wl1251_build_qos_null_data(struct wl1251 *wl)
+{
+ struct ieee80211_qos_hdr template;
+
+ memset(&template, 0, sizeof(template));
+
+ memcpy(template.addr1, wl->bssid, ETH_ALEN);
+ memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
+ memcpy(template.addr3, wl->bssid, ETH_ALEN);
+
+ template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
+ IEEE80211_STYPE_QOS_NULLFUNC |
+ IEEE80211_FCTL_TODS);
+
+ /* FIXME: not sure what priority to use here */
+ template.qos_ctrl = cpu_to_le16(0);
+
+ return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &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;
+ }
+
+ if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
+ wl1251_debug(DEBUG_PSM, "psm enabled");
+
+ wl->psm_requested = true;
+
+ wl->dtim_period = conf->ps_dtim_period;
+
+ ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
+ wl->dtim_period);
+
+ /*
+ * mac80211 enables PSM only if we're already associated.
+ */
+ ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
+ if (ret < 0)
+ goto out_sleep;
+ } 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 (ret < 0)
+ goto out_sleep;
+ }
+ }
+
+ if (conf->power_level != wl->power_level) {
+ ret = wl1251_acx_tx_power(wl, conf->power_level);
+ if (ret < 0)
+ goto out_sleep;
+
+ 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->cipher) {
+ case WLAN_CIPHER_SUITE_WEP40:
+ case WLAN_CIPHER_SUITE_WEP104:
+ 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 WLAN_CIPHER_SUITE_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 WLAN_CIPHER_SUITE_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 cipher 0x%x", mac80211_key->cipher);
+ 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->cipher, 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_op_hw_scan(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct cfg80211_scan_request *req)
+{
+ struct wl1251 *wl = hw->priv;
+ struct sk_buff *skb;
+ size_t ssid_len = 0;
+ u8 *ssid = NULL;
+ int ret;
+
+ 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);
+
+ if (wl->scanning) {
+ wl1251_debug(DEBUG_SCAN, "scan already in progress");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
+ req->ie, req->ie_len);
+ if (!skb) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
+ skb->len);
+ dev_kfree_skb(skb);
+ if (ret < 0)
+ goto out_sleep;
+
+ ret = wl1251_cmd_trigger_scan_to(wl, 0);
+ if (ret < 0)
+ goto out_sleep;
+
+ wl->scanning = true;
+
+ ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
+ req->n_channels, WL1251_SCAN_NUM_PROBES);
+ if (ret < 0) {
+ wl->scanning = false;
+ goto out_sleep;
+ }
+
+out_sleep:
+ 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)
+{
+ struct wl1251 *wl = hw->priv;
+ struct sk_buff *beacon, *skb;
+ 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_BSSID) {
+ memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
+
+ skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
+ if (!skb)
+ goto out_sleep;
+
+ ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
+ skb->data, skb->len);
+ dev_kfree_skb(skb);
+ if (ret < 0)
+ goto out_sleep;
+
+ ret = wl1251_build_qos_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;
+ }
+ }
+
+ if (changed & BSS_CHANGED_ASSOC) {
+ if (bss_conf->assoc) {
+ wl->beacon_int = bss_conf->beacon_int;
+
+ skb = ieee80211_pspoll_get(wl->hw, wl->vif);
+ if (!skb)
+ goto out_sleep;
+
+ ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
+ skb->data,
+ skb->len);
+ dev_kfree_skb(skb);
+ if (ret < 0)
+ goto out_sleep;
+
+ ret = wl1251_acx_aid(wl, bss_conf->aid);
+ 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_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_sleep;
+ }
+
+ ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
+ beacon->len);
+
+ dev_kfree_skb(beacon);
+
+ if (ret < 0)
+ goto out_sleep;
+
+ ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
+ wl->channel, wl->dtim_period);
+
+ if (ret < 0)
+ goto out_sleep;
+ }
+
+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},
+};
+
+static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
+ const struct ieee80211_tx_queue_params *params)
+{
+ enum wl1251_acx_ps_scheme ps_scheme;
+ struct wl1251 *wl = hw->priv;
+ int ret;
+
+ mutex_lock(&wl->mutex);
+
+ wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
+
+ ret = wl1251_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ /* mac80211 uses units of 32 usec */
+ ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
+ params->cw_min, params->cw_max,
+ params->aifs, params->txop * 32);
+ if (ret < 0)
+ goto out_sleep;
+
+ if (params->uapsd)
+ ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
+ else
+ ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
+
+ ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
+ CHANNEL_TYPE_EDCF,
+ wl1251_tx_get_queue(queue), ps_scheme,
+ WL1251_ACX_ACK_POLICY_LEGACY);
+ if (ret < 0)
+ goto out_sleep;
+
+out_sleep:
+ wl1251_ps_elp_sleep(wl);
+
+out:
+ mutex_unlock(&wl->mutex);
+
+ return ret;
+}
+
+static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
+ struct survey_info *survey)
+{
+ struct wl1251 *wl = hw->priv;
+ struct ieee80211_conf *conf = &hw->conf;
+
+ if (idx != 0)
+ return -ENOENT;
+
+ survey->channel = conf->channel;
+ survey->filled = SURVEY_INFO_NOISE_DBM;
+ survey->noise = wl->noise;
+
+ return 0;
+}
+
+/* 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,
+ .conf_tx = wl1251_op_conf_tx,
+ .get_survey = wl1251_op_get_survey,
+};
+
+static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
+{
+ unsigned long timeout;
+
+ wl1251_reg_write32(wl, EE_ADDR, offset);
+ wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
+
+ /* EE_CTL_READ clears when data is ready */
+ timeout = jiffies + msecs_to_jiffies(100);
+ while (1) {
+ if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
+ break;
+
+ if (time_after(jiffies, timeout))
+ return -ETIMEDOUT;
+
+ msleep(1);
+ }
+
+ *data = wl1251_reg_read32(wl, EE_DATA);
+ return 0;
+}
+
+static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
+ u8 *data, size_t len)
+{
+ size_t i;
+ int ret;
+
+ wl1251_reg_write32(wl, EE_START, 0);
+
+ for (i = 0; i < len; i++) {
+ ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int wl1251_read_eeprom_mac(struct wl1251 *wl)
+{
+ u8 mac[ETH_ALEN];
+ int i, ret;
+
+ wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
+
+ ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
+ if (ret < 0) {
+ wl1251_warning("failed to read MAC address from EEPROM");
+ return ret;
+ }
+
+ /* MAC is stored in reverse order */
+ for (i = 0; i < ETH_ALEN; i++)
+ wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
+
+ return 0;
+}
+
+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_SUPPORTS_PS |
+ IEEE80211_HW_BEACON_FILTER |
+ IEEE80211_HW_SUPPORTS_UAPSD;
+
+ 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;
+
+ wl->hw->queues = 4;
+
+ if (wl->use_eeprom)
+ wl1251_read_eeprom_mac(wl);
+
+ 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);
+ INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_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;
+ wl->vif = NULL;
+
+ 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);
+ vfree(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 <kvalo@adurom.com>");
+MODULE_FIRMWARE(WL1251_FW_NAME);
projects / mv-sheeva.git / blobdiff