--- /dev/null
+/*
+ * This file contains the major functions in WLAN
+ * driver. It includes init, exit, open, close and main
+ * thread etc..
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/etherdevice.h>
+#include <linux/hardirq.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <linux/kthread.h>
+#include <linux/kfifo.h>
+#include <linux/slab.h>
+#include <net/cfg80211.h>
+
+#include "host.h"
+#include "decl.h"
+#include "dev.h"
+#include "cfg.h"
+#include "debugfs.h"
+#include "cmd.h"
+#include "mesh.h"
+
+#define DRIVER_RELEASE_VERSION "323.p0"
+const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
+#ifdef DEBUG
+ "-dbg"
+#endif
+ "";
+
+
+/* Module parameters */
+unsigned int lbs_debug;
+EXPORT_SYMBOL_GPL(lbs_debug);
+module_param_named(libertas_debug, lbs_debug, int, 0644);
+
+unsigned int lbs_disablemesh;
+EXPORT_SYMBOL_GPL(lbs_disablemesh);
+module_param_named(libertas_disablemesh, lbs_disablemesh, int, 0644);
+
+
+/*
+ * This global structure is used to send the confirm_sleep command as
+ * fast as possible down to the firmware.
+ */
+struct cmd_confirm_sleep confirm_sleep;
+
+
+/*
+ * the table to keep region code
+ */
+u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
+ { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
+
+/*
+ * FW rate table. FW refers to rates by their index in this table, not by the
+ * rate value itself. Values of 0x00 are
+ * reserved positions.
+ */
+static u8 fw_data_rates[MAX_RATES] =
+ { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
+ 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
+};
+
+/**
+ * lbs_fw_index_to_data_rate - use index to get the data rate
+ *
+ * @idx: The index of data rate
+ * returns: data rate or 0
+ */
+u32 lbs_fw_index_to_data_rate(u8 idx)
+{
+ if (idx >= sizeof(fw_data_rates))
+ idx = 0;
+ return fw_data_rates[idx];
+}
+
+/**
+ * lbs_data_rate_to_fw_index - use rate to get the index
+ *
+ * @rate: data rate
+ * returns: index or 0
+ */
+u8 lbs_data_rate_to_fw_index(u32 rate)
+{
+ u8 i;
+
+ if (!rate)
+ return 0;
+
+ for (i = 0; i < sizeof(fw_data_rates); i++) {
+ if (rate == fw_data_rates[i])
+ return i;
+ }
+ return 0;
+}
+
+int lbs_set_iface_type(struct lbs_private *priv, enum nl80211_iftype type)
+{
+ int ret = 0;
+
+ switch (type) {
+ case NL80211_IFTYPE_MONITOR:
+ ret = lbs_set_monitor_mode(priv, 1);
+ break;
+ case NL80211_IFTYPE_STATION:
+ if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
+ ret = lbs_set_monitor_mode(priv, 0);
+ if (!ret)
+ ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
+ ret = lbs_set_monitor_mode(priv, 0);
+ if (!ret)
+ ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
+ break;
+ default:
+ ret = -ENOTSUPP;
+ }
+ return ret;
+}
+
+int lbs_start_iface(struct lbs_private *priv)
+{
+ struct cmd_ds_802_11_mac_address cmd;
+ int ret;
+
+ if (priv->power_restore) {
+ ret = priv->power_restore(priv);
+ if (ret)
+ return ret;
+ }
+
+ cmd.hdr.size = cpu_to_le16(sizeof(cmd));
+ cmd.action = cpu_to_le16(CMD_ACT_SET);
+ memcpy(cmd.macadd, priv->current_addr, ETH_ALEN);
+
+ ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
+ if (ret) {
+ lbs_deb_net("set MAC address failed\n");
+ goto err;
+ }
+
+ ret = lbs_set_iface_type(priv, priv->wdev->iftype);
+ if (ret) {
+ lbs_deb_net("set iface type failed\n");
+ goto err;
+ }
+
+ ret = lbs_set_11d_domain_info(priv);
+ if (ret) {
+ lbs_deb_net("set 11d domain info failed\n");
+ goto err;
+ }
+
+ lbs_update_channel(priv);
+
+ priv->iface_running = true;
+ return 0;
+
+err:
+ if (priv->power_save)
+ priv->power_save(priv);
+ return ret;
+}
+
+/**
+ * lbs_dev_open - open the ethX interface
+ *
+ * @dev: A pointer to &net_device structure
+ * returns: 0 or -EBUSY if monitor mode active
+ */
+static int lbs_dev_open(struct net_device *dev)
+{
+ struct lbs_private *priv = dev->ml_priv;
+ int ret = 0;
+
+ lbs_deb_enter(LBS_DEB_NET);
+ if (!priv->iface_running) {
+ ret = lbs_start_iface(priv);
+ if (ret)
+ goto out;
+ }
+
+ spin_lock_irq(&priv->driver_lock);
+
+ netif_carrier_off(dev);
+
+ if (!priv->tx_pending_len)
+ netif_wake_queue(dev);
+
+ spin_unlock_irq(&priv->driver_lock);
+
+out:
+ lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
+ return ret;
+}
+
+static bool lbs_command_queue_empty(struct lbs_private *priv)
+{
+ unsigned long flags;
+ bool ret;
+ spin_lock_irqsave(&priv->driver_lock, flags);
+ ret = priv->cur_cmd == NULL && list_empty(&priv->cmdpendingq);
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ return ret;
+}
+
+int lbs_stop_iface(struct lbs_private *priv)
+{
+ unsigned long flags;
+ int ret = 0;
+
+ lbs_deb_enter(LBS_DEB_MAIN);
+
+ spin_lock_irqsave(&priv->driver_lock, flags);
+ priv->iface_running = false;
+ kfree_skb(priv->currenttxskb);
+ priv->currenttxskb = NULL;
+ priv->tx_pending_len = 0;
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+
+ cancel_work_sync(&priv->mcast_work);
+ del_timer_sync(&priv->tx_lockup_timer);
+
+ /* Disable command processing, and wait for all commands to complete */
+ lbs_deb_main("waiting for commands to complete\n");
+ wait_event(priv->waitq, lbs_command_queue_empty(priv));
+ lbs_deb_main("all commands completed\n");
+
+ if (priv->power_save)
+ ret = priv->power_save(priv);
+
+ lbs_deb_leave(LBS_DEB_MAIN);
+ return ret;
+}
+
+/**
+ * lbs_eth_stop - close the ethX interface
+ *
+ * @dev: A pointer to &net_device structure
+ * returns: 0
+ */
+static int lbs_eth_stop(struct net_device *dev)
+{
+ struct lbs_private *priv = dev->ml_priv;
+
+ lbs_deb_enter(LBS_DEB_NET);
+
+ if (priv->connect_status == LBS_CONNECTED)
+ lbs_disconnect(priv, WLAN_REASON_DEAUTH_LEAVING);
+
+ spin_lock_irq(&priv->driver_lock);
+ netif_stop_queue(dev);
+ spin_unlock_irq(&priv->driver_lock);
+
+ lbs_update_mcast(priv);
+ cancel_delayed_work_sync(&priv->scan_work);
+ if (priv->scan_req)
+ lbs_scan_done(priv);
+
+ netif_carrier_off(priv->dev);
+
+ if (!lbs_iface_active(priv))
+ lbs_stop_iface(priv);
+
+ lbs_deb_leave(LBS_DEB_NET);
+ return 0;
+}
+
+void lbs_host_to_card_done(struct lbs_private *priv)
+{
+ unsigned long flags;
+
+ lbs_deb_enter(LBS_DEB_THREAD);
+
+ spin_lock_irqsave(&priv->driver_lock, flags);
+ del_timer(&priv->tx_lockup_timer);
+
+ priv->dnld_sent = DNLD_RES_RECEIVED;
+
+ /* Wake main thread if commands are pending */
+ if (!priv->cur_cmd || priv->tx_pending_len > 0) {
+ if (!priv->wakeup_dev_required)
+ wake_up(&priv->waitq);
+ }
+
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ lbs_deb_leave(LBS_DEB_THREAD);
+}
+EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
+
+int lbs_set_mac_address(struct net_device *dev, void *addr)
+{
+ int ret = 0;
+ struct lbs_private *priv = dev->ml_priv;
+ struct sockaddr *phwaddr = addr;
+
+ lbs_deb_enter(LBS_DEB_NET);
+
+ /*
+ * Can only set MAC address when all interfaces are down, to be written
+ * to the hardware when one of them is brought up.
+ */
+ if (lbs_iface_active(priv))
+ return -EBUSY;
+
+ /* In case it was called from the mesh device */
+ dev = priv->dev;
+
+ memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
+ memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
+ if (priv->mesh_dev)
+ memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
+
+ lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
+ return ret;
+}
+
+
+static inline int mac_in_list(unsigned char *list, int list_len,
+ unsigned char *mac)
+{
+ while (list_len) {
+ if (!memcmp(list, mac, ETH_ALEN))
+ return 1;
+ list += ETH_ALEN;
+ list_len--;
+ }
+ return 0;
+}
+
+
+static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
+ struct net_device *dev, int nr_addrs)
+{
+ int i = nr_addrs;
+ struct netdev_hw_addr *ha;
+ int cnt;
+
+ if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
+ return nr_addrs;
+
+ netif_addr_lock_bh(dev);
+ cnt = netdev_mc_count(dev);
+ netdev_for_each_mc_addr(ha, dev) {
+ if (mac_in_list(cmd->maclist, nr_addrs, ha->addr)) {
+ lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
+ ha->addr);
+ cnt--;
+ continue;
+ }
+
+ if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
+ break;
+ memcpy(&cmd->maclist[6*i], ha->addr, ETH_ALEN);
+ lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
+ ha->addr);
+ i++;
+ cnt--;
+ }
+ netif_addr_unlock_bh(dev);
+ if (cnt)
+ return -EOVERFLOW;
+
+ return i;
+}
+
+void lbs_update_mcast(struct lbs_private *priv)
+{
+ struct cmd_ds_mac_multicast_adr mcast_cmd;
+ int dev_flags = 0;
+ int nr_addrs;
+ int old_mac_control = priv->mac_control;
+
+ lbs_deb_enter(LBS_DEB_NET);
+
+ if (netif_running(priv->dev))
+ dev_flags |= priv->dev->flags;
+ if (priv->mesh_dev && netif_running(priv->mesh_dev))
+ dev_flags |= priv->mesh_dev->flags;
+
+ if (dev_flags & IFF_PROMISC) {
+ priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
+ priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
+ CMD_ACT_MAC_MULTICAST_ENABLE);
+ goto out_set_mac_control;
+ } else if (dev_flags & IFF_ALLMULTI) {
+ do_allmulti:
+ priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
+ priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
+ CMD_ACT_MAC_MULTICAST_ENABLE);
+ goto out_set_mac_control;
+ }
+
+ /* Once for priv->dev, again for priv->mesh_dev if it exists */
+ nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
+ if (nr_addrs >= 0 && priv->mesh_dev)
+ nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
+ if (nr_addrs < 0)
+ goto do_allmulti;
+
+ if (nr_addrs) {
+ int size = offsetof(struct cmd_ds_mac_multicast_adr,
+ maclist[6*nr_addrs]);
+
+ mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
+ mcast_cmd.hdr.size = cpu_to_le16(size);
+ mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
+
+ lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
+
+ priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
+ } else
+ priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
+
+ priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
+ CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
+ out_set_mac_control:
+ if (priv->mac_control != old_mac_control)
+ lbs_set_mac_control(priv);
+
+ lbs_deb_leave(LBS_DEB_NET);
+}
+
+static void lbs_set_mcast_worker(struct work_struct *work)
+{
+ struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
+ lbs_update_mcast(priv);
+}
+
+void lbs_set_multicast_list(struct net_device *dev)
+{
+ struct lbs_private *priv = dev->ml_priv;
+
+ schedule_work(&priv->mcast_work);
+}
+
+/**
+ * lbs_thread - handles the major jobs in the LBS driver.
+ * It handles all events generated by firmware, RX data received
+ * from firmware and TX data sent from kernel.
+ *
+ * @data: A pointer to &lbs_thread structure
+ * returns: 0
+ */
+static int lbs_thread(void *data)
+{
+ struct net_device *dev = data;
+ struct lbs_private *priv = dev->ml_priv;
+ wait_queue_t wait;
+
+ lbs_deb_enter(LBS_DEB_THREAD);
+
+ init_waitqueue_entry(&wait, current);
+
+ for (;;) {
+ int shouldsleep;
+ u8 resp_idx;
+
+ lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
+ priv->currenttxskb, priv->dnld_sent);
+
+ add_wait_queue(&priv->waitq, &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
+ spin_lock_irq(&priv->driver_lock);
+
+ if (kthread_should_stop())
+ shouldsleep = 0; /* Bye */
+ else if (priv->surpriseremoved)
+ shouldsleep = 1; /* We need to wait until we're _told_ to die */
+ else if (priv->psstate == PS_STATE_SLEEP)
+ shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
+ else if (priv->cmd_timed_out)
+ shouldsleep = 0; /* Command timed out. Recover */
+ else if (!priv->fw_ready)
+ shouldsleep = 1; /* Firmware not ready. We're waiting for it */
+ else if (priv->dnld_sent)
+ shouldsleep = 1; /* Something is en route to the device already */
+ else if (priv->tx_pending_len > 0)
+ shouldsleep = 0; /* We've a packet to send */
+ else if (priv->resp_len[priv->resp_idx])
+ shouldsleep = 0; /* We have a command response */
+ else if (priv->cur_cmd)
+ shouldsleep = 1; /* Can't send a command; one already running */
+ else if (!list_empty(&priv->cmdpendingq) &&
+ !(priv->wakeup_dev_required))
+ shouldsleep = 0; /* We have a command to send */
+ else if (kfifo_len(&priv->event_fifo))
+ shouldsleep = 0; /* We have an event to process */
+ else
+ shouldsleep = 1; /* No command */
+
+ if (shouldsleep) {
+ lbs_deb_thread("sleeping, connect_status %d, "
+ "psmode %d, psstate %d\n",
+ priv->connect_status,
+ priv->psmode, priv->psstate);
+ spin_unlock_irq(&priv->driver_lock);
+ schedule();
+ } else
+ spin_unlock_irq(&priv->driver_lock);
+
+ lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
+ priv->currenttxskb, priv->dnld_sent);
+
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&priv->waitq, &wait);
+
+ lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
+ priv->currenttxskb, priv->dnld_sent);
+
+ if (kthread_should_stop()) {
+ lbs_deb_thread("break from main thread\n");
+ break;
+ }
+
+ if (priv->surpriseremoved) {
+ lbs_deb_thread("adapter removed; waiting to die...\n");
+ continue;
+ }
+
+ lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
+ priv->currenttxskb, priv->dnld_sent);
+
+ /* Process any pending command response */
+ spin_lock_irq(&priv->driver_lock);
+ resp_idx = priv->resp_idx;
+ if (priv->resp_len[resp_idx]) {
+ spin_unlock_irq(&priv->driver_lock);
+ lbs_process_command_response(priv,
+ priv->resp_buf[resp_idx],
+ priv->resp_len[resp_idx]);
+ spin_lock_irq(&priv->driver_lock);
+ priv->resp_len[resp_idx] = 0;
+ }
+ spin_unlock_irq(&priv->driver_lock);
+
+ /* Process hardware events, e.g. card removed, link lost */
+ spin_lock_irq(&priv->driver_lock);
+ while (kfifo_len(&priv->event_fifo)) {
+ u32 event;
+
+ if (kfifo_out(&priv->event_fifo,
+ (unsigned char *) &event, sizeof(event)) !=
+ sizeof(event))
+ break;
+ spin_unlock_irq(&priv->driver_lock);
+ lbs_process_event(priv, event);
+ spin_lock_irq(&priv->driver_lock);
+ }
+ spin_unlock_irq(&priv->driver_lock);
+
+ if (priv->wakeup_dev_required) {
+ lbs_deb_thread("Waking up device...\n");
+ /* Wake up device */
+ if (priv->exit_deep_sleep(priv))
+ lbs_deb_thread("Wakeup device failed\n");
+ continue;
+ }
+
+ /* command timeout stuff */
+ if (priv->cmd_timed_out && priv->cur_cmd) {
+ struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
+
+ netdev_info(dev, "Timeout submitting command 0x%04x\n",
+ le16_to_cpu(cmdnode->cmdbuf->command));
+ lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
+
+ /* Reset card, but only when it isn't in the process
+ * of being shutdown anyway. */
+ if (!dev->dismantle && priv->reset_card)
+ priv->reset_card(priv);
+ }
+ priv->cmd_timed_out = 0;
+
+ if (!priv->fw_ready)
+ continue;
+
+ /* Check if we need to confirm Sleep Request received previously */
+ if (priv->psstate == PS_STATE_PRE_SLEEP &&
+ !priv->dnld_sent && !priv->cur_cmd) {
+ if (priv->connect_status == LBS_CONNECTED) {
+ lbs_deb_thread("pre-sleep, currenttxskb %p, "
+ "dnld_sent %d, cur_cmd %p\n",
+ priv->currenttxskb, priv->dnld_sent,
+ priv->cur_cmd);
+
+ lbs_ps_confirm_sleep(priv);
+ } else {
+ /* workaround for firmware sending
+ * deauth/linkloss event immediately
+ * after sleep request; remove this
+ * after firmware fixes it
+ */
+ priv->psstate = PS_STATE_AWAKE;
+ netdev_alert(dev,
+ "ignore PS_SleepConfirm in non-connected state\n");
+ }
+ }
+
+ /* The PS state is changed during processing of Sleep Request
+ * event above
+ */
+ if ((priv->psstate == PS_STATE_SLEEP) ||
+ (priv->psstate == PS_STATE_PRE_SLEEP))
+ continue;
+
+ if (priv->is_deep_sleep)
+ continue;
+
+ /* Execute the next command */
+ if (!priv->dnld_sent && !priv->cur_cmd)
+ lbs_execute_next_command(priv);
+
+ spin_lock_irq(&priv->driver_lock);
+ if (!priv->dnld_sent && priv->tx_pending_len > 0) {
+ int ret = priv->hw_host_to_card(priv, MVMS_DAT,
+ priv->tx_pending_buf,
+ priv->tx_pending_len);
+ if (ret) {
+ lbs_deb_tx("host_to_card failed %d\n", ret);
+ priv->dnld_sent = DNLD_RES_RECEIVED;
+ } else {
+ mod_timer(&priv->tx_lockup_timer,
+ jiffies + (HZ * 5));
+ }
+ priv->tx_pending_len = 0;
+ if (!priv->currenttxskb) {
+ /* We can wake the queues immediately if we aren't
+ waiting for TX feedback */
+ if (priv->connect_status == LBS_CONNECTED)
+ netif_wake_queue(priv->dev);
+ if (priv->mesh_dev &&
+ netif_running(priv->mesh_dev))
+ netif_wake_queue(priv->mesh_dev);
+ }
+ }
+ spin_unlock_irq(&priv->driver_lock);
+ }
+
+ del_timer(&priv->command_timer);
+ del_timer(&priv->tx_lockup_timer);
+ del_timer(&priv->auto_deepsleep_timer);
+
+ lbs_deb_leave(LBS_DEB_THREAD);
+ return 0;
+}
+
+/**
+ * lbs_setup_firmware - gets the HW spec from the firmware and sets
+ * some basic parameters
+ *
+ * @priv: A pointer to &struct lbs_private structure
+ * returns: 0 or -1
+ */
+static int lbs_setup_firmware(struct lbs_private *priv)
+{
+ int ret = -1;
+ s16 curlevel = 0, minlevel = 0, maxlevel = 0;
+
+ lbs_deb_enter(LBS_DEB_FW);
+
+ /* Read MAC address from firmware */
+ eth_broadcast_addr(priv->current_addr);
+ ret = lbs_update_hw_spec(priv);
+ if (ret)
+ goto done;
+
+ /* Read power levels if available */
+ ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
+ if (ret == 0) {
+ priv->txpower_cur = curlevel;
+ priv->txpower_min = minlevel;
+ priv->txpower_max = maxlevel;
+ }
+
+ /* Send cmd to FW to enable 11D function */
+ ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_11D_ENABLE, 1);
+ if (ret)
+ goto done;
+
+ ret = lbs_set_mac_control_sync(priv);
+done:
+ lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
+ return ret;
+}
+
+int lbs_suspend(struct lbs_private *priv)
+{
+ int ret;
+
+ lbs_deb_enter(LBS_DEB_FW);
+
+ if (priv->is_deep_sleep) {
+ ret = lbs_set_deep_sleep(priv, 0);
+ if (ret) {
+ netdev_err(priv->dev,
+ "deep sleep cancellation failed: %d\n", ret);
+ return ret;
+ }
+ priv->deep_sleep_required = 1;
+ }
+
+ ret = lbs_set_host_sleep(priv, 1);
+
+ netif_device_detach(priv->dev);
+ if (priv->mesh_dev)
+ netif_device_detach(priv->mesh_dev);
+
+ lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(lbs_suspend);
+
+int lbs_resume(struct lbs_private *priv)
+{
+ int ret;
+
+ lbs_deb_enter(LBS_DEB_FW);
+
+ ret = lbs_set_host_sleep(priv, 0);
+
+ netif_device_attach(priv->dev);
+ if (priv->mesh_dev)
+ netif_device_attach(priv->mesh_dev);
+
+ if (priv->deep_sleep_required) {
+ priv->deep_sleep_required = 0;
+ ret = lbs_set_deep_sleep(priv, 1);
+ if (ret)
+ netdev_err(priv->dev,
+ "deep sleep activation failed: %d\n", ret);
+ }
+
+ if (priv->setup_fw_on_resume)
+ ret = lbs_setup_firmware(priv);
+
+ lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(lbs_resume);
+
+/**
+ * lbs_cmd_timeout_handler - handles the timeout of command sending.
+ * It will re-send the same command again.
+ *
+ * @data: &struct lbs_private pointer
+ */
+static void lbs_cmd_timeout_handler(unsigned long data)
+{
+ struct lbs_private *priv = (struct lbs_private *)data;
+ unsigned long flags;
+
+ lbs_deb_enter(LBS_DEB_CMD);
+ spin_lock_irqsave(&priv->driver_lock, flags);
+
+ if (!priv->cur_cmd)
+ goto out;
+
+ netdev_info(priv->dev, "command 0x%04x timed out\n",
+ le16_to_cpu(priv->cur_cmd->cmdbuf->command));
+
+ priv->cmd_timed_out = 1;
+
+ /*
+ * If the device didn't even acknowledge the command, reset the state
+ * so that we don't block all future commands due to this one timeout.
+ */
+ if (priv->dnld_sent == DNLD_CMD_SENT)
+ priv->dnld_sent = DNLD_RES_RECEIVED;
+
+ wake_up(&priv->waitq);
+out:
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ lbs_deb_leave(LBS_DEB_CMD);
+}
+
+/**
+ * lbs_tx_lockup_handler - handles the timeout of the passing of TX frames
+ * to the hardware. This is known to frequently happen with SD8686 when
+ * waking up after a Wake-on-WLAN-triggered resume.
+ *
+ * @data: &struct lbs_private pointer
+ */
+static void lbs_tx_lockup_handler(unsigned long data)
+{
+ struct lbs_private *priv = (struct lbs_private *)data;
+ unsigned long flags;
+
+ lbs_deb_enter(LBS_DEB_TX);
+ spin_lock_irqsave(&priv->driver_lock, flags);
+
+ netdev_info(priv->dev, "TX lockup detected\n");
+ if (priv->reset_card)
+ priv->reset_card(priv);
+
+ priv->dnld_sent = DNLD_RES_RECEIVED;
+ wake_up_interruptible(&priv->waitq);
+
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ lbs_deb_leave(LBS_DEB_TX);
+}
+
+/**
+ * auto_deepsleep_timer_fn - put the device back to deep sleep mode when
+ * timer expires and no activity (command, event, data etc.) is detected.
+ * @data: &struct lbs_private pointer
+ * returns: N/A
+ */
+static void auto_deepsleep_timer_fn(unsigned long data)
+{
+ struct lbs_private *priv = (struct lbs_private *)data;
+
+ lbs_deb_enter(LBS_DEB_CMD);
+
+ if (priv->is_activity_detected) {
+ priv->is_activity_detected = 0;
+ } else {
+ if (priv->is_auto_deep_sleep_enabled &&
+ (!priv->wakeup_dev_required) &&
+ (priv->connect_status != LBS_CONNECTED)) {
+ struct cmd_header cmd;
+
+ lbs_deb_main("Entering auto deep sleep mode...\n");
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.size = cpu_to_le16(sizeof(cmd));
+ lbs_cmd_async(priv, CMD_802_11_DEEP_SLEEP, &cmd,
+ sizeof(cmd));
+ }
+ }
+ mod_timer(&priv->auto_deepsleep_timer , jiffies +
+ (priv->auto_deep_sleep_timeout * HZ)/1000);
+ lbs_deb_leave(LBS_DEB_CMD);
+}
+
+int lbs_enter_auto_deep_sleep(struct lbs_private *priv)
+{
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ priv->is_auto_deep_sleep_enabled = 1;
+ if (priv->is_deep_sleep)
+ priv->wakeup_dev_required = 1;
+ mod_timer(&priv->auto_deepsleep_timer ,
+ jiffies + (priv->auto_deep_sleep_timeout * HZ)/1000);
+
+ lbs_deb_leave(LBS_DEB_SDIO);
+ return 0;
+}
+
+int lbs_exit_auto_deep_sleep(struct lbs_private *priv)
+{
+ lbs_deb_enter(LBS_DEB_SDIO);
+
+ priv->is_auto_deep_sleep_enabled = 0;
+ priv->auto_deep_sleep_timeout = 0;
+ del_timer(&priv->auto_deepsleep_timer);
+
+ lbs_deb_leave(LBS_DEB_SDIO);
+ return 0;
+}
+
+static int lbs_init_adapter(struct lbs_private *priv)
+{
+ int ret;
+
+ lbs_deb_enter(LBS_DEB_MAIN);
+
+ eth_broadcast_addr(priv->current_addr);
+
+ priv->connect_status = LBS_DISCONNECTED;
+ priv->channel = DEFAULT_AD_HOC_CHANNEL;
+ priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
+ priv->radio_on = 1;
+ priv->psmode = LBS802_11POWERMODECAM;
+ priv->psstate = PS_STATE_FULL_POWER;
+ priv->is_deep_sleep = 0;
+ priv->is_auto_deep_sleep_enabled = 0;
+ priv->deep_sleep_required = 0;
+ priv->wakeup_dev_required = 0;
+ init_waitqueue_head(&priv->ds_awake_q);
+ init_waitqueue_head(&priv->scan_q);
+ priv->authtype_auto = 1;
+ priv->is_host_sleep_configured = 0;
+ priv->is_host_sleep_activated = 0;
+ init_waitqueue_head(&priv->host_sleep_q);
+ init_waitqueue_head(&priv->fw_waitq);
+ mutex_init(&priv->lock);
+
+ setup_timer(&priv->command_timer, lbs_cmd_timeout_handler,
+ (unsigned long)priv);
+ setup_timer(&priv->tx_lockup_timer, lbs_tx_lockup_handler,
+ (unsigned long)priv);
+ setup_timer(&priv->auto_deepsleep_timer, auto_deepsleep_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 (lbs_allocate_cmd_buffer(priv)) {
+ pr_err("Out of memory allocating command buffers\n");
+ ret = -ENOMEM;
+ goto out;
+ }
+ priv->resp_idx = 0;
+ priv->resp_len[0] = priv->resp_len[1] = 0;
+
+ /* Create the event FIFO */
+ ret = kfifo_alloc(&priv->event_fifo, sizeof(u32) * 16, GFP_KERNEL);
+ if (ret) {
+ pr_err("Out of memory allocating event FIFO buffer\n");
+ goto out;
+ }
+
+out:
+ lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
+
+ return ret;
+}
+
+static void lbs_free_adapter(struct lbs_private *priv)
+{
+ lbs_deb_enter(LBS_DEB_MAIN);
+
+ lbs_free_cmd_buffer(priv);
+ kfifo_free(&priv->event_fifo);
+ del_timer(&priv->command_timer);
+ del_timer(&priv->tx_lockup_timer);
+ del_timer(&priv->auto_deepsleep_timer);
+
+ lbs_deb_leave(LBS_DEB_MAIN);
+}
+
+static const struct net_device_ops lbs_netdev_ops = {
+ .ndo_open = lbs_dev_open,
+ .ndo_stop = lbs_eth_stop,
+ .ndo_start_xmit = lbs_hard_start_xmit,
+ .ndo_set_mac_address = lbs_set_mac_address,
+ .ndo_set_rx_mode = lbs_set_multicast_list,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+/**
+ * lbs_add_card - adds the card. It will probe the
+ * card, allocate the lbs_priv and initialize the device.
+ *
+ * @card: A pointer to card
+ * @dmdev: A pointer to &struct device
+ * returns: A pointer to &struct lbs_private structure
+ */
+struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
+{
+ struct net_device *dev;
+ struct wireless_dev *wdev;
+ struct lbs_private *priv = NULL;
+
+ lbs_deb_enter(LBS_DEB_MAIN);
+
+ /* Allocate an Ethernet device and register it */
+ wdev = lbs_cfg_alloc(dmdev);
+ if (IS_ERR(wdev)) {
+ pr_err("cfg80211 init failed\n");
+ goto done;
+ }
+
+ wdev->iftype = NL80211_IFTYPE_STATION;
+ priv = wdev_priv(wdev);
+ priv->wdev = wdev;
+
+ if (lbs_init_adapter(priv)) {
+ pr_err("failed to initialize adapter structure\n");
+ goto err_wdev;
+ }
+
+ dev = alloc_netdev(0, "wlan%d", NET_NAME_UNKNOWN, ether_setup);
+ if (!dev) {
+ dev_err(dmdev, "no memory for network device instance\n");
+ goto err_adapter;
+ }
+
+ dev->ieee80211_ptr = wdev;
+ dev->ml_priv = priv;
+ SET_NETDEV_DEV(dev, dmdev);
+ wdev->netdev = dev;
+ priv->dev = dev;
+
+ dev->netdev_ops = &lbs_netdev_ops;
+ dev->watchdog_timeo = 5 * HZ;
+ dev->ethtool_ops = &lbs_ethtool_ops;
+ dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
+
+ priv->card = card;
+
+ strcpy(dev->name, "wlan%d");
+
+ lbs_deb_thread("Starting main thread...\n");
+ init_waitqueue_head(&priv->waitq);
+ priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
+ if (IS_ERR(priv->main_thread)) {
+ lbs_deb_thread("Error creating main thread.\n");
+ goto err_ndev;
+ }
+
+ priv->work_thread = create_singlethread_workqueue("lbs_worker");
+ INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
+
+ priv->wol_criteria = EHS_REMOVE_WAKEUP;
+ priv->wol_gpio = 0xff;
+ priv->wol_gap = 20;
+ priv->ehs_remove_supported = true;
+
+ goto done;
+
+ err_ndev:
+ free_netdev(dev);
+
+ err_adapter:
+ lbs_free_adapter(priv);
+
+ err_wdev:
+ lbs_cfg_free(priv);
+
+ priv = NULL;
+
+done:
+ lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
+ return priv;
+}
+EXPORT_SYMBOL_GPL(lbs_add_card);
+
+
+void lbs_remove_card(struct lbs_private *priv)
+{
+ struct net_device *dev = priv->dev;
+
+ lbs_deb_enter(LBS_DEB_MAIN);
+
+ lbs_remove_mesh(priv);
+
+ if (priv->wiphy_registered)
+ lbs_scan_deinit(priv);
+
+ lbs_wait_for_firmware_load(priv);
+
+ /* worker thread destruction blocks on the in-flight command which
+ * should have been cleared already in lbs_stop_card().
+ */
+ lbs_deb_main("destroying worker thread\n");
+ destroy_workqueue(priv->work_thread);
+ lbs_deb_main("done destroying worker thread\n");
+
+ if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
+ priv->psmode = LBS802_11POWERMODECAM;
+ lbs_set_ps_mode(priv, PS_MODE_ACTION_EXIT_PS, true);
+ }
+
+ if (priv->is_deep_sleep) {
+ priv->is_deep_sleep = 0;
+ wake_up_interruptible(&priv->ds_awake_q);
+ }
+
+ priv->is_host_sleep_configured = 0;
+ priv->is_host_sleep_activated = 0;
+ wake_up_interruptible(&priv->host_sleep_q);
+
+ /* Stop the thread servicing the interrupts */
+ priv->surpriseremoved = 1;
+ kthread_stop(priv->main_thread);
+
+ lbs_free_adapter(priv);
+ lbs_cfg_free(priv);
+ free_netdev(dev);
+
+ lbs_deb_leave(LBS_DEB_MAIN);
+}
+EXPORT_SYMBOL_GPL(lbs_remove_card);
+
+
+int lbs_rtap_supported(struct lbs_private *priv)
+{
+ if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5)
+ return 1;
+
+ /* newer firmware use a capability mask */
+ return ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
+ (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK));
+}
+
+
+int lbs_start_card(struct lbs_private *priv)
+{
+ struct net_device *dev = priv->dev;
+ int ret = -1;
+
+ lbs_deb_enter(LBS_DEB_MAIN);
+
+ /* poke the firmware */
+ ret = lbs_setup_firmware(priv);
+ if (ret)
+ goto done;
+
+ if (!lbs_disablemesh)
+ lbs_init_mesh(priv);
+ else
+ pr_info("%s: mesh disabled\n", dev->name);
+
+ if (lbs_cfg_register(priv)) {
+ pr_err("cannot register device\n");
+ goto done;
+ }
+
+ if (lbs_mesh_activated(priv))
+ lbs_start_mesh(priv);
+
+ lbs_debugfs_init_one(priv, dev);
+
+ netdev_info(dev, "Marvell WLAN 802.11 adapter\n");
+
+ ret = 0;
+
+done:
+ lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(lbs_start_card);
+
+
+void lbs_stop_card(struct lbs_private *priv)
+{
+ struct net_device *dev;
+
+ lbs_deb_enter(LBS_DEB_MAIN);
+
+ if (!priv)
+ goto out;
+ dev = priv->dev;
+
+ /* If the netdev isn't registered, it means that lbs_start_card() was
+ * never called so we have nothing to do here. */
+ if (dev->reg_state != NETREG_REGISTERED)
+ goto out;
+
+ netif_stop_queue(dev);
+ netif_carrier_off(dev);
+
+ lbs_debugfs_remove_one(priv);
+ lbs_deinit_mesh(priv);
+ unregister_netdev(dev);
+
+out:
+ lbs_deb_leave(LBS_DEB_MAIN);
+}
+EXPORT_SYMBOL_GPL(lbs_stop_card);
+
+
+void lbs_queue_event(struct lbs_private *priv, u32 event)
+{
+ unsigned long flags;
+
+ lbs_deb_enter(LBS_DEB_THREAD);
+ spin_lock_irqsave(&priv->driver_lock, flags);
+
+ if (priv->psstate == PS_STATE_SLEEP)
+ priv->psstate = PS_STATE_AWAKE;
+
+ kfifo_in(&priv->event_fifo, (unsigned char *) &event, sizeof(u32));
+
+ wake_up(&priv->waitq);
+
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ lbs_deb_leave(LBS_DEB_THREAD);
+}
+EXPORT_SYMBOL_GPL(lbs_queue_event);
+
+void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
+{
+ lbs_deb_enter(LBS_DEB_THREAD);
+
+ if (priv->psstate == PS_STATE_SLEEP)
+ priv->psstate = PS_STATE_AWAKE;
+
+ /* Swap buffers by flipping the response index */
+ BUG_ON(resp_idx > 1);
+ priv->resp_idx = resp_idx;
+
+ wake_up(&priv->waitq);
+
+ lbs_deb_leave(LBS_DEB_THREAD);
+}
+EXPORT_SYMBOL_GPL(lbs_notify_command_response);
+
+static int __init lbs_init_module(void)
+{
+ lbs_deb_enter(LBS_DEB_MAIN);
+ memset(&confirm_sleep, 0, sizeof(confirm_sleep));
+ confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
+ confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
+ confirm_sleep.action = cpu_to_le16(PS_MODE_ACTION_SLEEP_CONFIRMED);
+ lbs_debugfs_init();
+ lbs_deb_leave(LBS_DEB_MAIN);
+ return 0;
+}
+
+static void __exit lbs_exit_module(void)
+{
+ lbs_deb_enter(LBS_DEB_MAIN);
+ lbs_debugfs_remove();
+ lbs_deb_leave(LBS_DEB_MAIN);
+}
+
+module_init(lbs_init_module);
+module_exit(lbs_exit_module);
+
+MODULE_DESCRIPTION("Libertas WLAN Driver Library");
+MODULE_AUTHOR("Marvell International Ltd.");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff