| /* |
| * 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; |
| } |
| |
| 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); |
| if (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 */ |
| memset(priv->current_addr, 0xff, ETH_ALEN); |
| 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); |
| |
| lbs_set_mac_control(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); |
| |
| memset(priv->current_addr, 0xff, ETH_ALEN); |
| |
| 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", 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"); |