--- /dev/null
+/*
+ * Copyright (C) 2008, cozybit Inc.
+ * Copyright (C) 2003-2006, Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/hardirq.h>
+#include <linux/slab.h>
+
+#include <linux/etherdevice.h>
+#include <linux/module.h>
+#include "libertas_tf.h"
+
+#define DRIVER_RELEASE_VERSION "004.p0"
+/* thinfirm version: 5.132.X.pX */
+#define LBTF_FW_VER_MIN 0x05840300
+#define LBTF_FW_VER_MAX 0x0584ffff
+#define QOS_CONTROL_LEN 2
+
+/* Module parameters */
+unsigned int lbtf_debug;
+EXPORT_SYMBOL_GPL(lbtf_debug);
+module_param_named(libertas_tf_debug, lbtf_debug, int, 0644);
+
+static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION
+#ifdef DEBUG
+ "-dbg"
+#endif
+ "";
+
+struct workqueue_struct *lbtf_wq;
+
+static const struct ieee80211_channel lbtf_channels[] = {
+ { .center_freq = 2412, .hw_value = 1 },
+ { .center_freq = 2417, .hw_value = 2 },
+ { .center_freq = 2422, .hw_value = 3 },
+ { .center_freq = 2427, .hw_value = 4 },
+ { .center_freq = 2432, .hw_value = 5 },
+ { .center_freq = 2437, .hw_value = 6 },
+ { .center_freq = 2442, .hw_value = 7 },
+ { .center_freq = 2447, .hw_value = 8 },
+ { .center_freq = 2452, .hw_value = 9 },
+ { .center_freq = 2457, .hw_value = 10 },
+ { .center_freq = 2462, .hw_value = 11 },
+ { .center_freq = 2467, .hw_value = 12 },
+ { .center_freq = 2472, .hw_value = 13 },
+ { .center_freq = 2484, .hw_value = 14 },
+};
+
+/* This table contains the hardware specific values for the modulation rates. */
+static const struct ieee80211_rate lbtf_rates[] = {
+ { .bitrate = 10,
+ .hw_value = 0, },
+ { .bitrate = 20,
+ .hw_value = 1,
+ .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 55,
+ .hw_value = 2,
+ .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 110,
+ .hw_value = 3,
+ .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 60,
+ .hw_value = 5,
+ .flags = 0 },
+ { .bitrate = 90,
+ .hw_value = 6,
+ .flags = 0 },
+ { .bitrate = 120,
+ .hw_value = 7,
+ .flags = 0 },
+ { .bitrate = 180,
+ .hw_value = 8,
+ .flags = 0 },
+ { .bitrate = 240,
+ .hw_value = 9,
+ .flags = 0 },
+ { .bitrate = 360,
+ .hw_value = 10,
+ .flags = 0 },
+ { .bitrate = 480,
+ .hw_value = 11,
+ .flags = 0 },
+ { .bitrate = 540,
+ .hw_value = 12,
+ .flags = 0 },
+};
+
+static void lbtf_cmd_work(struct work_struct *work)
+{
+ struct lbtf_private *priv = container_of(work, struct lbtf_private,
+ cmd_work);
+
+ lbtf_deb_enter(LBTF_DEB_CMD);
+
+ spin_lock_irq(&priv->driver_lock);
+ /* command response? */
+ if (priv->cmd_response_rxed) {
+ priv->cmd_response_rxed = 0;
+ spin_unlock_irq(&priv->driver_lock);
+ lbtf_process_rx_command(priv);
+ spin_lock_irq(&priv->driver_lock);
+ }
+
+ if (priv->cmd_timed_out && priv->cur_cmd) {
+ struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
+
+ if (++priv->nr_retries > 10) {
+ lbtf_complete_command(priv, cmdnode,
+ -ETIMEDOUT);
+ priv->nr_retries = 0;
+ } else {
+ priv->cur_cmd = NULL;
+
+ /* Stick it back at the _top_ of the pending
+ * queue for immediate resubmission */
+ list_add(&cmdnode->list, &priv->cmdpendingq);
+ }
+ }
+ priv->cmd_timed_out = 0;
+ spin_unlock_irq(&priv->driver_lock);
+
+ if (!priv->fw_ready) {
+ lbtf_deb_leave_args(LBTF_DEB_CMD, "fw not ready");
+ return;
+ }
+
+ /* Execute the next command */
+ if (!priv->cur_cmd)
+ lbtf_execute_next_command(priv);
+
+ lbtf_deb_leave(LBTF_DEB_CMD);
+}
+
+/**
+ * lbtf_setup_firmware: initialize firmware.
+ *
+ * @priv A pointer to struct lbtf_private structure
+ *
+ * Returns: 0 on success.
+ */
+static int lbtf_setup_firmware(struct lbtf_private *priv)
+{
+ int ret = -1;
+
+ lbtf_deb_enter(LBTF_DEB_FW);
+ /*
+ * Read priv address from HW
+ */
+ eth_broadcast_addr(priv->current_addr);
+ ret = lbtf_update_hw_spec(priv);
+ if (ret) {
+ ret = -1;
+ goto done;
+ }
+
+ lbtf_set_mac_control(priv);
+ lbtf_set_radio_control(priv);
+
+ ret = 0;
+done:
+ lbtf_deb_leave_args(LBTF_DEB_FW, "ret: %d", ret);
+ return ret;
+}
+
+/**
+ * This function handles the timeout of command sending.
+ * It will re-send the same command again.
+ */
+static void command_timer_fn(unsigned long data)
+{
+ struct lbtf_private *priv = (struct lbtf_private *)data;
+ unsigned long flags;
+ lbtf_deb_enter(LBTF_DEB_CMD);
+
+ spin_lock_irqsave(&priv->driver_lock, flags);
+
+ if (!priv->cur_cmd) {
+ printk(KERN_DEBUG "libertastf: command timer expired; "
+ "no pending command\n");
+ goto out;
+ }
+
+ printk(KERN_DEBUG "libertas: command %x timed out\n",
+ le16_to_cpu(priv->cur_cmd->cmdbuf->command));
+
+ priv->cmd_timed_out = 1;
+ queue_work(lbtf_wq, &priv->cmd_work);
+out:
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ lbtf_deb_leave(LBTF_DEB_CMD);
+}
+
+static int lbtf_init_adapter(struct lbtf_private *priv)
+{
+ lbtf_deb_enter(LBTF_DEB_MAIN);
+ eth_broadcast_addr(priv->current_addr);
+ mutex_init(&priv->lock);
+
+ priv->vif = NULL;
+ setup_timer(&priv->command_timer, command_timer_fn,
+ (unsigned long)priv);
+
+ INIT_LIST_HEAD(&priv->cmdfreeq);
+ INIT_LIST_HEAD(&priv->cmdpendingq);
+
+ spin_lock_init(&priv->driver_lock);
+
+ /* Allocate the command buffers */
+ if (lbtf_allocate_cmd_buffer(priv))
+ return -1;
+
+ lbtf_deb_leave(LBTF_DEB_MAIN);
+ return 0;
+}
+
+static void lbtf_free_adapter(struct lbtf_private *priv)
+{
+ lbtf_deb_enter(LBTF_DEB_MAIN);
+ lbtf_free_cmd_buffer(priv);
+ del_timer(&priv->command_timer);
+ lbtf_deb_leave(LBTF_DEB_MAIN);
+}
+
+static void lbtf_op_tx(struct ieee80211_hw *hw,
+ struct ieee80211_tx_control *control,
+ struct sk_buff *skb)
+{
+ struct lbtf_private *priv = hw->priv;
+
+ priv->skb_to_tx = skb;
+ queue_work(lbtf_wq, &priv->tx_work);
+ /*
+ * queue will be restarted when we receive transmission feedback if
+ * there are no buffered multicast frames to send
+ */
+ ieee80211_stop_queues(priv->hw);
+}
+
+static void lbtf_tx_work(struct work_struct *work)
+{
+ struct lbtf_private *priv = container_of(work, struct lbtf_private,
+ tx_work);
+ unsigned int len;
+ struct ieee80211_tx_info *info;
+ struct txpd *txpd;
+ struct sk_buff *skb = NULL;
+ int err;
+
+ lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX);
+
+ if ((priv->vif->type == NL80211_IFTYPE_AP) &&
+ (!skb_queue_empty(&priv->bc_ps_buf)))
+ skb = skb_dequeue(&priv->bc_ps_buf);
+ else if (priv->skb_to_tx) {
+ skb = priv->skb_to_tx;
+ priv->skb_to_tx = NULL;
+ } else {
+ lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
+ return;
+ }
+
+ len = skb->len;
+ info = IEEE80211_SKB_CB(skb);
+ txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd));
+
+ if (priv->surpriseremoved) {
+ dev_kfree_skb_any(skb);
+ lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
+ return;
+ }
+
+ memset(txpd, 0, sizeof(struct txpd));
+ /* Activate per-packet rate selection */
+ txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |
+ ieee80211_get_tx_rate(priv->hw, info)->hw_value);
+
+ /* copy destination address from 802.11 header */
+ memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4,
+ ETH_ALEN);
+ txpd->tx_packet_length = cpu_to_le16(len);
+ txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
+ lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100));
+ BUG_ON(priv->tx_skb);
+ spin_lock_irq(&priv->driver_lock);
+ priv->tx_skb = skb;
+ err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);
+ spin_unlock_irq(&priv->driver_lock);
+ if (err) {
+ dev_kfree_skb_any(skb);
+ priv->tx_skb = NULL;
+ pr_err("TX error: %d", err);
+ }
+ lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
+}
+
+static int lbtf_op_start(struct ieee80211_hw *hw)
+{
+ struct lbtf_private *priv = hw->priv;
+ void *card = priv->card;
+ int ret = -1;
+
+ lbtf_deb_enter(LBTF_DEB_MACOPS);
+
+ if (!priv->fw_ready)
+ /* Upload firmware */
+ if (priv->hw_prog_firmware(card))
+ goto err_prog_firmware;
+
+ /* poke the firmware */
+ priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
+ priv->radioon = RADIO_ON;
+ priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
+ ret = lbtf_setup_firmware(priv);
+ if (ret)
+ goto err_prog_firmware;
+
+ if ((priv->fwrelease < LBTF_FW_VER_MIN) ||
+ (priv->fwrelease > LBTF_FW_VER_MAX)) {
+ ret = -1;
+ goto err_prog_firmware;
+ }
+
+ printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
+ lbtf_deb_leave(LBTF_DEB_MACOPS);
+ return 0;
+
+err_prog_firmware:
+ priv->hw_reset_device(card);
+ lbtf_deb_leave_args(LBTF_DEB_MACOPS, "error programming fw; ret=%d", ret);
+ return ret;
+}
+
+static void lbtf_op_stop(struct ieee80211_hw *hw)
+{
+ struct lbtf_private *priv = hw->priv;
+ unsigned long flags;
+ struct sk_buff *skb;
+
+ struct cmd_ctrl_node *cmdnode;
+
+ lbtf_deb_enter(LBTF_DEB_MACOPS);
+
+ /* Flush pending command nodes */
+ spin_lock_irqsave(&priv->driver_lock, flags);
+ list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
+ cmdnode->result = -ENOENT;
+ cmdnode->cmdwaitqwoken = 1;
+ wake_up_interruptible(&cmdnode->cmdwait_q);
+ }
+
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ cancel_work_sync(&priv->cmd_work);
+ cancel_work_sync(&priv->tx_work);
+ while ((skb = skb_dequeue(&priv->bc_ps_buf)))
+ dev_kfree_skb_any(skb);
+ priv->radioon = RADIO_OFF;
+ lbtf_set_radio_control(priv);
+
+ lbtf_deb_leave(LBTF_DEB_MACOPS);
+}
+
+static int lbtf_op_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct lbtf_private *priv = hw->priv;
+ lbtf_deb_enter(LBTF_DEB_MACOPS);
+ if (priv->vif != NULL)
+ return -EOPNOTSUPP;
+
+ priv->vif = vif;
+ switch (vif->type) {
+ case NL80211_IFTYPE_MESH_POINT:
+ case NL80211_IFTYPE_AP:
+ lbtf_set_mode(priv, LBTF_AP_MODE);
+ break;
+ case NL80211_IFTYPE_STATION:
+ lbtf_set_mode(priv, LBTF_STA_MODE);
+ break;
+ default:
+ priv->vif = NULL;
+ return -EOPNOTSUPP;
+ }
+ lbtf_set_mac_address(priv, (u8 *) vif->addr);
+ lbtf_deb_leave(LBTF_DEB_MACOPS);
+ return 0;
+}
+
+static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct lbtf_private *priv = hw->priv;
+ lbtf_deb_enter(LBTF_DEB_MACOPS);
+
+ if (priv->vif->type == NL80211_IFTYPE_AP ||
+ priv->vif->type == NL80211_IFTYPE_MESH_POINT)
+ lbtf_beacon_ctrl(priv, 0, 0);
+ lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
+ lbtf_set_bssid(priv, 0, NULL);
+ priv->vif = NULL;
+ lbtf_deb_leave(LBTF_DEB_MACOPS);
+}
+
+static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed)
+{
+ struct lbtf_private *priv = hw->priv;
+ struct ieee80211_conf *conf = &hw->conf;
+ lbtf_deb_enter(LBTF_DEB_MACOPS);
+
+ if (conf->chandef.chan->center_freq != priv->cur_freq) {
+ priv->cur_freq = conf->chandef.chan->center_freq;
+ lbtf_set_channel(priv, conf->chandef.chan->hw_value);
+ }
+ lbtf_deb_leave(LBTF_DEB_MACOPS);
+ return 0;
+}
+
+static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw,
+ struct netdev_hw_addr_list *mc_list)
+{
+ struct lbtf_private *priv = hw->priv;
+ int i;
+ struct netdev_hw_addr *ha;
+ int mc_count = netdev_hw_addr_list_count(mc_list);
+
+ if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE)
+ return mc_count;
+
+ priv->nr_of_multicastmacaddr = mc_count;
+ i = 0;
+ netdev_hw_addr_list_for_each(ha, mc_list)
+ memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN);
+
+ return mc_count;
+}
+
+#define SUPPORTED_FIF_FLAGS (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)
+static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed_flags,
+ unsigned int *new_flags,
+ u64 multicast)
+{
+ struct lbtf_private *priv = hw->priv;
+ int old_mac_control = priv->mac_control;
+
+ lbtf_deb_enter(LBTF_DEB_MACOPS);
+
+ changed_flags &= SUPPORTED_FIF_FLAGS;
+ *new_flags &= SUPPORTED_FIF_FLAGS;
+
+ if (!changed_flags) {
+ lbtf_deb_leave(LBTF_DEB_MACOPS);
+ return;
+ }
+
+ if (*new_flags & (FIF_PROMISC_IN_BSS))
+ priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
+ else
+ priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
+ if (*new_flags & (FIF_ALLMULTI) ||
+ multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) {
+ priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
+ priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
+ } else if (multicast) {
+ priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
+ priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
+ lbtf_cmd_set_mac_multicast_addr(priv);
+ } else {
+ priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE |
+ CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
+ if (priv->nr_of_multicastmacaddr) {
+ priv->nr_of_multicastmacaddr = 0;
+ lbtf_cmd_set_mac_multicast_addr(priv);
+ }
+ }
+
+
+ if (priv->mac_control != old_mac_control)
+ lbtf_set_mac_control(priv);
+
+ lbtf_deb_leave(LBTF_DEB_MACOPS);
+}
+
+static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf,
+ u32 changes)
+{
+ struct lbtf_private *priv = hw->priv;
+ struct sk_buff *beacon;
+ lbtf_deb_enter(LBTF_DEB_MACOPS);
+
+ if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) {
+ switch (priv->vif->type) {
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_MESH_POINT:
+ beacon = ieee80211_beacon_get(hw, vif);
+ if (beacon) {
+ lbtf_beacon_set(priv, beacon);
+ kfree_skb(beacon);
+ lbtf_beacon_ctrl(priv, 1,
+ bss_conf->beacon_int);
+ }
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (changes & BSS_CHANGED_BSSID) {
+ bool activate = !is_zero_ether_addr(bss_conf->bssid);
+ lbtf_set_bssid(priv, activate, bss_conf->bssid);
+ }
+
+ if (changes & BSS_CHANGED_ERP_PREAMBLE) {
+ if (bss_conf->use_short_preamble)
+ priv->preamble = CMD_TYPE_SHORT_PREAMBLE;
+ else
+ priv->preamble = CMD_TYPE_LONG_PREAMBLE;
+ lbtf_set_radio_control(priv);
+ }
+
+ lbtf_deb_leave(LBTF_DEB_MACOPS);
+}
+
+static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx,
+ struct survey_info *survey)
+{
+ struct lbtf_private *priv = hw->priv;
+ struct ieee80211_conf *conf = &hw->conf;
+
+ if (idx != 0)
+ return -ENOENT;
+
+ survey->channel = conf->chandef.chan;
+ survey->filled = SURVEY_INFO_NOISE_DBM;
+ survey->noise = priv->noise;
+
+ return 0;
+}
+
+static const struct ieee80211_ops lbtf_ops = {
+ .tx = lbtf_op_tx,
+ .start = lbtf_op_start,
+ .stop = lbtf_op_stop,
+ .add_interface = lbtf_op_add_interface,
+ .remove_interface = lbtf_op_remove_interface,
+ .config = lbtf_op_config,
+ .prepare_multicast = lbtf_op_prepare_multicast,
+ .configure_filter = lbtf_op_configure_filter,
+ .bss_info_changed = lbtf_op_bss_info_changed,
+ .get_survey = lbtf_op_get_survey,
+};
+
+int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
+{
+ struct ieee80211_rx_status stats;
+ struct rxpd *prxpd;
+ int need_padding;
+ unsigned int flags;
+ struct ieee80211_hdr *hdr;
+
+ lbtf_deb_enter(LBTF_DEB_RX);
+
+ prxpd = (struct rxpd *) skb->data;
+
+ memset(&stats, 0, sizeof(stats));
+ if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))
+ stats.flag |= RX_FLAG_FAILED_FCS_CRC;
+ stats.freq = priv->cur_freq;
+ stats.band = IEEE80211_BAND_2GHZ;
+ stats.signal = prxpd->snr;
+ priv->noise = prxpd->nf;
+ /* Marvell rate index has a hole at value 4 */
+ if (prxpd->rx_rate > 4)
+ --prxpd->rx_rate;
+ stats.rate_idx = prxpd->rx_rate;
+ skb_pull(skb, sizeof(struct rxpd));
+
+ hdr = (struct ieee80211_hdr *)skb->data;
+ flags = le32_to_cpu(*(__le32 *)(skb->data + 4));
+
+ need_padding = ieee80211_is_data_qos(hdr->frame_control);
+ need_padding ^= ieee80211_has_a4(hdr->frame_control);
+ need_padding ^= ieee80211_is_data_qos(hdr->frame_control) &&
+ (*ieee80211_get_qos_ctl(hdr) &
+ IEEE80211_QOS_CTL_A_MSDU_PRESENT);
+
+ if (need_padding) {
+ memmove(skb->data + 2, skb->data, skb->len);
+ skb_reserve(skb, 2);
+ }
+
+ memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
+
+ lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n",
+ skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd));
+ lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data,
+ min_t(unsigned int, skb->len, 100));
+
+ ieee80211_rx_irqsafe(priv->hw, skb);
+
+ lbtf_deb_leave(LBTF_DEB_RX);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(lbtf_rx);
+
+/**
+ * lbtf_add_card: Add and initialize the card, no fw upload yet.
+ *
+ * @card A pointer to card
+ *
+ * Returns: pointer to struct lbtf_priv.
+ */
+struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev)
+{
+ struct ieee80211_hw *hw;
+ struct lbtf_private *priv = NULL;
+
+ lbtf_deb_enter(LBTF_DEB_MAIN);
+
+ hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);
+ if (!hw)
+ goto done;
+
+ priv = hw->priv;
+ if (lbtf_init_adapter(priv))
+ goto err_init_adapter;
+
+ priv->hw = hw;
+ priv->card = card;
+ priv->tx_skb = NULL;
+
+ hw->queues = 1;
+ hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
+ hw->extra_tx_headroom = sizeof(struct txpd);
+ memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels));
+ memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates));
+ priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates);
+ priv->band.bitrates = priv->rates;
+ priv->band.n_channels = ARRAY_SIZE(lbtf_channels);
+ priv->band.channels = priv->channels;
+ hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
+ hw->wiphy->interface_modes =
+ BIT(NL80211_IFTYPE_STATION) |
+ BIT(NL80211_IFTYPE_ADHOC);
+ skb_queue_head_init(&priv->bc_ps_buf);
+
+ SET_IEEE80211_DEV(hw, dmdev);
+
+ INIT_WORK(&priv->cmd_work, lbtf_cmd_work);
+ INIT_WORK(&priv->tx_work, lbtf_tx_work);
+ if (ieee80211_register_hw(hw))
+ goto err_init_adapter;
+
+ goto done;
+
+err_init_adapter:
+ lbtf_free_adapter(priv);
+ ieee80211_free_hw(hw);
+ priv = NULL;
+
+done:
+ lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv);
+ return priv;
+}
+EXPORT_SYMBOL_GPL(lbtf_add_card);
+
+
+int lbtf_remove_card(struct lbtf_private *priv)
+{
+ struct ieee80211_hw *hw = priv->hw;
+
+ lbtf_deb_enter(LBTF_DEB_MAIN);
+
+ priv->surpriseremoved = 1;
+ del_timer(&priv->command_timer);
+ lbtf_free_adapter(priv);
+ priv->hw = NULL;
+ ieee80211_unregister_hw(hw);
+ ieee80211_free_hw(hw);
+
+ lbtf_deb_leave(LBTF_DEB_MAIN);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(lbtf_remove_card);
+
+void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
+
+ ieee80211_tx_info_clear_status(info);
+ /*
+ * Commented out, otherwise we never go beyond 1Mbit/s using mac80211
+ * default pid rc algorithm.
+ *
+ * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt;
+ */
+ if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)
+ info->flags |= IEEE80211_TX_STAT_ACK;
+ skb_pull(priv->tx_skb, sizeof(struct txpd));
+ ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
+ priv->tx_skb = NULL;
+ if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))
+ ieee80211_wake_queues(priv->hw);
+ else
+ queue_work(lbtf_wq, &priv->tx_work);
+}
+EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);
+
+void lbtf_bcn_sent(struct lbtf_private *priv)
+{
+ struct sk_buff *skb = NULL;
+
+ if (priv->vif->type != NL80211_IFTYPE_AP)
+ return;
+
+ if (skb_queue_empty(&priv->bc_ps_buf)) {
+ bool tx_buff_bc = false;
+
+ while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) {
+ skb_queue_tail(&priv->bc_ps_buf, skb);
+ tx_buff_bc = true;
+ }
+ if (tx_buff_bc) {
+ ieee80211_stop_queues(priv->hw);
+ queue_work(lbtf_wq, &priv->tx_work);
+ }
+ }
+
+ skb = ieee80211_beacon_get(priv->hw, priv->vif);
+
+ if (skb) {
+ lbtf_beacon_set(priv, skb);
+ kfree_skb(skb);
+ }
+}
+EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
+
+static int __init lbtf_init_module(void)
+{
+ lbtf_deb_enter(LBTF_DEB_MAIN);
+ lbtf_wq = create_workqueue("libertastf");
+ if (lbtf_wq == NULL) {
+ printk(KERN_ERR "libertastf: couldn't create workqueue\n");
+ return -ENOMEM;
+ }
+ lbtf_deb_leave(LBTF_DEB_MAIN);
+ return 0;
+}
+
+static void __exit lbtf_exit_module(void)
+{
+ lbtf_deb_enter(LBTF_DEB_MAIN);
+ destroy_workqueue(lbtf_wq);
+ lbtf_deb_leave(LBTF_DEB_MAIN);
+}
+
+module_init(lbtf_init_module);
+module_exit(lbtf_exit_module);
+
+MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library");
+MODULE_AUTHOR("Cozybit Inc.");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff