/** * This file contains the major functions in WLAN * driver. It includes init, exit, open, close and main * thread etc.. */ #include #include #include #include #include #include #include "host.h" #include "sbi.h" #include "decl.h" #include "dev.h" #include "fw.h" #include "wext.h" #include "debugfs.h" #include "assoc.h" #ifdef ENABLE_PM static struct pm_dev *wlan_pm_dev = NULL; #endif #define WLAN_TX_PWR_DEFAULT 20 /*100mW */ #define WLAN_TX_PWR_US_DEFAULT 20 /*100mW */ #define WLAN_TX_PWR_JP_DEFAULT 16 /*50mW */ #define WLAN_TX_PWR_FR_DEFAULT 20 /*100mW */ #define WLAN_TX_PWR_EMEA_DEFAULT 20 /*100mW */ /* Format { channel, frequency (MHz), maxtxpower } */ /* band: 'B/G', region: USA FCC/Canada IC */ static struct chan_freq_power channel_freq_power_US_BG[] = { {1, 2412, WLAN_TX_PWR_US_DEFAULT}, {2, 2417, WLAN_TX_PWR_US_DEFAULT}, {3, 2422, WLAN_TX_PWR_US_DEFAULT}, {4, 2427, WLAN_TX_PWR_US_DEFAULT}, {5, 2432, WLAN_TX_PWR_US_DEFAULT}, {6, 2437, WLAN_TX_PWR_US_DEFAULT}, {7, 2442, WLAN_TX_PWR_US_DEFAULT}, {8, 2447, WLAN_TX_PWR_US_DEFAULT}, {9, 2452, WLAN_TX_PWR_US_DEFAULT}, {10, 2457, WLAN_TX_PWR_US_DEFAULT}, {11, 2462, WLAN_TX_PWR_US_DEFAULT} }; /* band: 'B/G', region: Europe ETSI */ static struct chan_freq_power channel_freq_power_EU_BG[] = { {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT}, {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT}, {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT}, {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT}, {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT}, {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT}, {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT}, {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT}, {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT}, {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT}, {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT}, {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT}, {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT} }; /* band: 'B/G', region: Spain */ static struct chan_freq_power channel_freq_power_SPN_BG[] = { {10, 2457, WLAN_TX_PWR_DEFAULT}, {11, 2462, WLAN_TX_PWR_DEFAULT} }; /* band: 'B/G', region: France */ static struct chan_freq_power channel_freq_power_FR_BG[] = { {10, 2457, WLAN_TX_PWR_FR_DEFAULT}, {11, 2462, WLAN_TX_PWR_FR_DEFAULT}, {12, 2467, WLAN_TX_PWR_FR_DEFAULT}, {13, 2472, WLAN_TX_PWR_FR_DEFAULT} }; /* band: 'B/G', region: Japan */ static struct chan_freq_power channel_freq_power_JPN_BG[] = { {1, 2412, WLAN_TX_PWR_JP_DEFAULT}, {2, 2417, WLAN_TX_PWR_JP_DEFAULT}, {3, 2422, WLAN_TX_PWR_JP_DEFAULT}, {4, 2427, WLAN_TX_PWR_JP_DEFAULT}, {5, 2432, WLAN_TX_PWR_JP_DEFAULT}, {6, 2437, WLAN_TX_PWR_JP_DEFAULT}, {7, 2442, WLAN_TX_PWR_JP_DEFAULT}, {8, 2447, WLAN_TX_PWR_JP_DEFAULT}, {9, 2452, WLAN_TX_PWR_JP_DEFAULT}, {10, 2457, WLAN_TX_PWR_JP_DEFAULT}, {11, 2462, WLAN_TX_PWR_JP_DEFAULT}, {12, 2467, WLAN_TX_PWR_JP_DEFAULT}, {13, 2472, WLAN_TX_PWR_JP_DEFAULT}, {14, 2484, WLAN_TX_PWR_JP_DEFAULT} }; /** * the structure for channel, frequency and power */ struct region_cfp_table { u8 region; struct chan_freq_power *cfp_BG; int cfp_no_BG; }; /** * the structure for the mapping between region and CFP */ static struct region_cfp_table region_cfp_table[] = { {0x10, /*US FCC */ channel_freq_power_US_BG, sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power), } , {0x20, /*CANADA IC */ channel_freq_power_US_BG, sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power), } , {0x30, /*EU*/ channel_freq_power_EU_BG, sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power), } , {0x31, /*SPAIN*/ channel_freq_power_SPN_BG, sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power), } , {0x32, /*FRANCE*/ channel_freq_power_FR_BG, sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power), } , {0x40, /*JAPAN*/ channel_freq_power_JPN_BG, sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power), } , /*Add new region here */ }; /** * the rates supported by the card */ u8 libertas_wlan_data_rates[WLAN_SUPPORTED_RATES] = { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00 }; /** * the rates supported */ u8 libertas_supported_rates[G_SUPPORTED_RATES] = { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c, 0 }; /** * the rates supported for ad-hoc G mode */ u8 libertas_adhoc_rates_g[G_SUPPORTED_RATES] = { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c, 0 }; /** * the rates supported for ad-hoc B mode */ u8 libertas_adhoc_rates_b[4] = { 0x82, 0x84, 0x8b, 0x96 }; /** * the global variable of a pointer to wlan_private * structure variable */ static wlan_private *wlanpriv = NULL; #define MAX_DEVS 5 static struct net_device *libertas_devs[MAX_DEVS]; static int libertas_found = 0; /** * the table to keep region code */ u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] = { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 }; static u8 *default_fw_name = "usb8388.bin"; /** * Attributes exported through sysfs */ /** * @brief Get function for sysfs attribute libertas_mpp */ static ssize_t libertas_mpp_get(struct device * dev, struct device_attribute *attr, char * buf) { struct cmd_ds_mesh_access mesh_access; memset(&mesh_access, 0, sizeof(mesh_access)); libertas_prepare_and_send_command(to_net_dev(dev)->priv, cmd_mesh_access, cmd_act_mesh_get_mpp, cmd_option_waitforrsp, 0, (void *)&mesh_access); return snprintf(buf, 3, "%d\n", mesh_access.data[0]); } /** * @brief Set function for sysfs attribute libertas_mpp */ static ssize_t libertas_mpp_set(struct device * dev, struct device_attribute *attr, const char * buf, size_t count) { struct cmd_ds_mesh_access mesh_access; memset(&mesh_access, 0, sizeof(mesh_access)); sscanf(buf, "%d", &(mesh_access.data[0])); libertas_prepare_and_send_command((to_net_dev(dev))->priv, cmd_mesh_access, cmd_act_mesh_set_mpp, cmd_option_waitforrsp, 0, (void *)&mesh_access); return strlen(buf); } /** * libertas_mpp attribute to be exported per mshX interface * through sysfs (/sys/class/net/mshX/libertas-mpp) */ static DEVICE_ATTR(libertas_mpp, 0644, libertas_mpp_get, libertas_mpp_set ); /** * @brief Check if the device can be open and wait if necessary. * * @param dev A pointer to net_device structure * @return 0 * * For USB adapter, on some systems the device open handler will be * called before FW ready. Use the following flag check and wait * function to work around the issue. * */ static int pre_open_check(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv; wlan_adapter *adapter = priv->adapter; int i = 0; while (!adapter->fw_ready && i < 20) { i++; msleep_interruptible(100); } if (!adapter->fw_ready) { lbs_pr_info("FW not ready, pre_open_check() return failure\n"); LEAVE(); return -1; } return 0; } /** * @brief This function opens the device * * @param dev A pointer to net_device structure * @return 0 */ static int wlan_dev_open(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv; wlan_adapter *adapter = priv->adapter; ENTER(); priv->open = 1; if (adapter->connect_status == libertas_connected) { netif_carrier_on(priv->wlan_dev.netdev); } else netif_carrier_off(priv->wlan_dev.netdev); LEAVE(); return 0; } /** * @brief This function opens the mshX interface * * @param dev A pointer to net_device structure * @return 0 */ static int mesh_open(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv ; if(pre_open_check(dev) == -1) return -1; priv->mesh_open = 1 ; netif_start_queue(priv->mesh_dev); if (priv->infra_open == 0) return wlan_dev_open(priv->wlan_dev.netdev) ; return 0; } /** * @brief This function opens the ethX interface * * @param dev A pointer to net_device structure * @return 0 */ static int wlan_open(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv ; if(pre_open_check(dev) == -1) return -1; priv->infra_open = 1 ; netif_wake_queue(priv->wlan_dev.netdev); if (priv->open == 0) return wlan_dev_open(priv->wlan_dev.netdev) ; return 0; } static int wlan_dev_close(struct net_device *dev) { wlan_private *priv = dev->priv; ENTER(); netif_carrier_off(priv->wlan_dev.netdev); priv->open = 0; LEAVE(); return 0; } /** * @brief This function closes the mshX interface * * @param dev A pointer to net_device structure * @return 0 */ static int mesh_close(struct net_device *dev) { wlan_private *priv = (wlan_private *) (dev->priv); priv->mesh_open = 0; netif_stop_queue(priv->mesh_dev); if (priv->infra_open == 0) return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ; else return 0; } /** * @brief This function closes the ethX interface * * @param dev A pointer to net_device structure * @return 0 */ static int wlan_close(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv; netif_stop_queue(priv->wlan_dev.netdev); priv->infra_open = 0; if (priv->mesh_open == 0) return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ; else return 0; } #ifdef ENABLE_PM /** * @brief This function is a callback function. it is called by * kernel to enter or exit power saving mode. * * @param pmdev A pointer to pm_dev * @param pmreq pm_request_t * @param pmdata A pointer to pmdata * @return 0 or -1 */ static int wlan_pm_callback(struct pm_dev *pmdev, pm_request_t pmreq, void *pmdata) { wlan_private *priv = wlanpriv; wlan_adapter *adapter = priv->adapter; struct net_device *dev = priv->wlan_dev.netdev; lbs_pr_debug(1, "WPRM_PM_CALLBACK: pmreq = %d.\n", pmreq); switch (pmreq) { case PM_SUSPEND: lbs_pr_debug(1, "WPRM_PM_CALLBACK: enter PM_SUSPEND.\n"); /* in associated mode */ if (adapter->connect_status == libertas_connected) { if ((adapter->psstate != PS_STATE_SLEEP) ) { lbs_pr_debug(1, "wlan_pm_callback: can't enter sleep mode\n"); return -1; } else { /* * Detach the network interface * if the network is running */ if (netif_running(dev)) { netif_device_detach(dev); lbs_pr_debug(1, "netif_device_detach().\n"); } libertas_sbi_suspend(priv); } break; } /* in non associated mode */ /* * Detach the network interface * if the network is running */ if (netif_running(dev)) netif_device_detach(dev); /* * Storing and restoring of the regs be taken care * at the driver rest will be done at wlan driver * this makes driver independent of the card */ libertas_sbi_suspend(priv); break; case PM_RESUME: /* in associated mode */ if (adapter->connect_status == libertas_connected) { { /* * Bring the inteface up first * This case should not happen still ... */ libertas_sbi_resume(priv); /* * Attach the network interface * if the network is running */ if (netif_running(dev)) { netif_device_attach(dev); lbs_pr_debug(1, "after netif_device_attach().\n"); } lbs_pr_debug(1, "After netif attach, in associated mode.\n"); } break; } /* in non associated mode */ /* * Bring the inteface up first * This case should not happen still ... */ libertas_sbi_resume(priv); if (netif_running(dev)) netif_device_attach(dev); lbs_pr_debug(1, "after netif attach, in NON associated mode.\n"); break; } return 0; } #endif /* ENABLE_PM */ static int wlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { int ret = 0; wlan_private *priv = dev->priv; ENTER(); if (priv->wlan_dev.dnld_sent || priv->adapter->TxLockFlag) { priv->stats.tx_dropped++; goto done; } netif_stop_queue(priv->wlan_dev.netdev); if (libertas_process_tx(priv, skb) == 0) dev->trans_start = jiffies; done: LEAVE(); return ret; } /** * @brief Mark mesh packets and handover them to wlan_hard_start_xmit * */ static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev) { wlan_private *priv = dev->priv; ENTER(); SET_MESH_FRAME(skb); LEAVE(); return wlan_hard_start_xmit(skb, priv->wlan_dev.netdev); } /** * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit * */ static int wlan_pre_start_xmit(struct sk_buff *skb, struct net_device *dev) { ENTER(); UNSET_MESH_FRAME(skb); LEAVE(); return wlan_hard_start_xmit(skb, dev); } static void wlan_tx_timeout(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv; ENTER(); lbs_pr_err("tx watch dog timeout!\n"); priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED; dev->trans_start = jiffies; if (priv->adapter->currenttxskb) { if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) { /* If we are here, we have not received feedback from the previous packet. Assume TX_FAIL and move on. */ priv->adapter->eventcause = 0x01000000; libertas_send_tx_feedback(priv); } else wake_up_interruptible(&priv->mainthread.waitq); } else if (priv->adapter->connect_status == libertas_connected) netif_wake_queue(priv->wlan_dev.netdev); LEAVE(); } /** * @brief This function returns the network statistics * * @param dev A pointer to wlan_private structure * @return A pointer to net_device_stats structure */ static struct net_device_stats *wlan_get_stats(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv; return &priv->stats; } static int wlan_set_mac_address(struct net_device *dev, void *addr) { int ret = 0; wlan_private *priv = (wlan_private *) dev->priv; wlan_adapter *adapter = priv->adapter; struct sockaddr *phwaddr = addr; ENTER(); memset(adapter->current_addr, 0, ETH_ALEN); /* dev->dev_addr is 8 bytes */ lbs_dbg_hex("dev->dev_addr:", dev->dev_addr, ETH_ALEN); lbs_dbg_hex("addr:", phwaddr->sa_data, ETH_ALEN); memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN); ret = libertas_prepare_and_send_command(priv, cmd_802_11_mac_address, cmd_act_set, cmd_option_waitforrsp, 0, NULL); if (ret) { lbs_pr_debug(1, "set mac address failed.\n"); ret = -1; goto done; } lbs_dbg_hex("adapter->macaddr:", adapter->current_addr, ETH_ALEN); memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN); memcpy(((wlan_private *) dev->priv)->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN); done: LEAVE(); return ret; } static int wlan_copy_multicast_address(wlan_adapter * adapter, struct net_device *dev) { int i = 0; struct dev_mc_list *mcptr = dev->mc_list; for (i = 0; i < dev->mc_count; i++) { memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN); mcptr = mcptr->next; } return i; } static void wlan_set_multicast_list(struct net_device *dev) { wlan_private *priv = dev->priv; wlan_adapter *adapter = priv->adapter; int oldpacketfilter; ENTER(); oldpacketfilter = adapter->currentpacketfilter; if (dev->flags & IFF_PROMISC) { lbs_pr_debug(1, "enable Promiscuous mode\n"); adapter->currentpacketfilter |= cmd_act_mac_promiscuous_enable; adapter->currentpacketfilter &= ~(cmd_act_mac_all_multicast_enable | cmd_act_mac_multicast_enable); } else { /* Multicast */ adapter->currentpacketfilter &= ~cmd_act_mac_promiscuous_enable; if (dev->flags & IFF_ALLMULTI || dev->mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) { lbs_pr_debug(1, "Enabling All Multicast!\n"); adapter->currentpacketfilter |= cmd_act_mac_all_multicast_enable; adapter->currentpacketfilter &= ~cmd_act_mac_multicast_enable; } else { adapter->currentpacketfilter &= ~cmd_act_mac_all_multicast_enable; if (!dev->mc_count) { lbs_pr_debug(1, "No multicast addresses - " "disabling multicast!\n"); adapter->currentpacketfilter &= ~cmd_act_mac_multicast_enable; } else { int i; adapter->currentpacketfilter |= cmd_act_mac_multicast_enable; adapter->nr_of_multicastmacaddr = wlan_copy_multicast_address(adapter, dev); lbs_pr_debug(1, "Multicast addresses: %d\n", dev->mc_count); for (i = 0; i < dev->mc_count; i++) { lbs_pr_debug(1, "Multicast address %d:" "%x %x %x %x %x %x\n", i, adapter->multicastlist[i][0], adapter->multicastlist[i][1], adapter->multicastlist[i][2], adapter->multicastlist[i][3], adapter->multicastlist[i][4], adapter->multicastlist[i][5]); } /* set multicast addresses to firmware */ libertas_prepare_and_send_command(priv, cmd_mac_multicast_adr, cmd_act_set, 0, 0, NULL); } } } if (adapter->currentpacketfilter != oldpacketfilter) { libertas_set_mac_packet_filter(priv); } LEAVE(); } /** * @brief This function hanldes the major job in WLAN driver. * it handles the event generated by firmware, rx data received * from firmware and tx data sent from kernel. * * @param data A pointer to wlan_thread structure * @return 0 */ static int wlan_service_main_thread(void *data) { struct wlan_thread *thread = data; wlan_private *priv = thread->priv; wlan_adapter *adapter = priv->adapter; wait_queue_t wait; u8 ireg = 0; ENTER(); wlan_activate_thread(thread); init_waitqueue_entry(&wait, current); for (;;) { lbs_pr_debug(1, "main-thread 111: intcounter=%d " "currenttxskb=%p dnld_sent=%d\n", adapter->intcounter, adapter->currenttxskb, priv->wlan_dev.dnld_sent); add_wait_queue(&thread->waitq, &wait); set_current_state(TASK_INTERRUPTIBLE); spin_lock_irq(&adapter->driver_lock); if ((adapter->psstate == PS_STATE_SLEEP) || (!adapter->intcounter && (priv->wlan_dev.dnld_sent || adapter->cur_cmd || list_empty(&adapter->cmdpendingq)))) { lbs_pr_debug(1, "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n", adapter->connect_status, adapter->intcounter, adapter->psmode, adapter->psstate); spin_unlock_irq(&adapter->driver_lock); schedule(); } else spin_unlock_irq(&adapter->driver_lock); lbs_pr_debug(1, "main-thread 222 (waking up): intcounter=%d currenttxskb=%p " "dnld_sent=%d\n", adapter->intcounter, adapter->currenttxskb, priv->wlan_dev.dnld_sent); set_current_state(TASK_RUNNING); remove_wait_queue(&thread->waitq, &wait); try_to_freeze(); lbs_pr_debug(1, "main-thread 333: intcounter=%d currenttxskb=%p " "dnld_sent=%d\n", adapter->intcounter, adapter->currenttxskb, priv->wlan_dev.dnld_sent); if (kthread_should_stop() || adapter->surpriseremoved) { lbs_pr_debug(1, "main-thread: break from main thread: surpriseremoved=0x%x\n", adapter->surpriseremoved); break; } spin_lock_irq(&adapter->driver_lock); if (adapter->intcounter) { u8 int_status; adapter->intcounter = 0; int_status = libertas_sbi_get_int_status(priv, &ireg); if (int_status) { lbs_pr_debug(1, "main-thread: reading HOST_INT_STATUS_REG failed\n"); spin_unlock_irq(&adapter->driver_lock); continue; } adapter->hisregcpy |= ireg; } lbs_pr_debug(1, "main-thread 444: intcounter=%d currenttxskb=%p " "dnld_sent=%d\n", adapter->intcounter, adapter->currenttxskb, priv->wlan_dev.dnld_sent); /* command response? */ if (adapter->hisregcpy & his_cmdupldrdy) { lbs_pr_debug(1, "main-thread: cmd response ready.\n"); adapter->hisregcpy &= ~his_cmdupldrdy; spin_unlock_irq(&adapter->driver_lock); libertas_process_rx_command(priv); spin_lock_irq(&adapter->driver_lock); } /* Any Card Event */ if (adapter->hisregcpy & his_cardevent) { lbs_pr_debug(1, "main-thread: Card Event Activity.\n"); adapter->hisregcpy &= ~his_cardevent; if (libertas_sbi_read_event_cause(priv)) { lbs_pr_alert( "main-thread: libertas_sbi_read_event_cause failed.\n"); spin_unlock_irq(&adapter->driver_lock); continue; } spin_unlock_irq(&adapter->driver_lock); libertas_process_event(priv); } else spin_unlock_irq(&adapter->driver_lock); /* Check if we need to confirm Sleep Request received previously */ if (adapter->psstate == PS_STATE_PRE_SLEEP) { if (!priv->wlan_dev.dnld_sent && !adapter->cur_cmd) { if (adapter->connect_status == libertas_connected) { lbs_pr_debug(1, "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p " "dnld_sent=%d cur_cmd=%p, confirm now\n", adapter->intcounter, adapter->currenttxskb, priv->wlan_dev.dnld_sent, adapter->cur_cmd); libertas_ps_confirm_sleep(priv, (u16) adapter->psmode); } else { /* workaround for firmware sending * deauth/linkloss event immediately * after sleep request, remove this * after firmware fixes it */ adapter->psstate = PS_STATE_AWAKE; lbs_pr_alert( "main-thread: ignore PS_SleepConfirm in non-connected state\n"); } } } /* The PS state is changed during processing of Sleep Request * event above */ if ((priv->adapter->psstate == PS_STATE_SLEEP) || (priv->adapter->psstate == PS_STATE_PRE_SLEEP)) continue; /* Execute the next command */ if (!priv->wlan_dev.dnld_sent && !priv->adapter->cur_cmd) libertas_execute_next_command(priv); /* Wake-up command waiters which can't sleep in * libertas_prepare_and_send_command */ if (!adapter->nr_cmd_pending) wake_up_all(&adapter->cmd_pending); libertas_tx_runqueue(priv); } del_timer(&adapter->command_timer); adapter->nr_cmd_pending = 0; wake_up_all(&adapter->cmd_pending); wlan_deactivate_thread(thread); LEAVE(); return 0; } /** * @brief This function adds the card. it will probe the * card, allocate the wlan_priv and initialize the device. * * @param card A pointer to card * @return A pointer to wlan_private structure */ wlan_private *wlan_add_card(void *card) { struct net_device *dev = NULL; struct net_device *mesh_dev = NULL; wlan_private *priv = NULL; ENTER(); /* Allocate an Ethernet device and register it */ if (!(dev = alloc_etherdev(sizeof(wlan_private)))) { lbs_pr_alert( "Init ethernet device failed!\n"); return NULL; } priv = dev->priv; /* allocate buffer for wlan_adapter */ if (!(priv->adapter = kmalloc(sizeof(wlan_adapter), GFP_KERNEL))) { lbs_pr_alert( "Allocate buffer for wlan_adapter failed!\n"); goto err_kmalloc; } /* Allocate a virtual mesh device */ if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) { lbs_pr_debug(1, "Init ethernet device failed!\n"); return NULL; } /* Both intervaces share the priv structure */ mesh_dev->priv = priv; /* init wlan_adapter */ memset(priv->adapter, 0, sizeof(wlan_adapter)); priv->wlan_dev.netdev = dev; priv->wlan_dev.card = card; priv->mesh_open = 0; priv->infra_open = 0; priv->mesh_dev = mesh_dev; wlanpriv = priv; SET_MODULE_OWNER(dev); SET_MODULE_OWNER(mesh_dev); /* Setup the OS Interface to our functions */ dev->open = wlan_open; dev->hard_start_xmit = wlan_pre_start_xmit; dev->stop = wlan_close; dev->do_ioctl = libertas_do_ioctl; dev->set_mac_address = wlan_set_mac_address; mesh_dev->open = mesh_open; mesh_dev->hard_start_xmit = mesh_pre_start_xmit; mesh_dev->stop = mesh_close; mesh_dev->do_ioctl = libertas_do_ioctl; memcpy(mesh_dev->dev_addr, wlanpriv->wlan_dev.netdev->dev_addr, sizeof(wlanpriv->wlan_dev.netdev->dev_addr)); #define WLAN_WATCHDOG_TIMEOUT (5 * HZ) dev->tx_timeout = wlan_tx_timeout; dev->get_stats = wlan_get_stats; dev->watchdog_timeo = WLAN_WATCHDOG_TIMEOUT; dev->ethtool_ops = &libertas_ethtool_ops; mesh_dev->get_stats = wlan_get_stats; mesh_dev->ethtool_ops = &libertas_ethtool_ops; #ifdef WIRELESS_EXT dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def; mesh_dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def; #endif #define NETIF_F_DYNALLOC 16 dev->features |= NETIF_F_DYNALLOC; dev->flags |= IFF_BROADCAST | IFF_MULTICAST; dev->set_multicast_list = wlan_set_multicast_list; INIT_LIST_HEAD(&priv->adapter->cmdfreeq); INIT_LIST_HEAD(&priv->adapter->cmdpendingq); spin_lock_init(&priv->adapter->driver_lock); init_waitqueue_head(&priv->adapter->cmd_pending); priv->adapter->nr_cmd_pending = 0; lbs_pr_debug(1, "Starting kthread...\n"); priv->mainthread.priv = priv; wlan_create_thread(wlan_service_main_thread, &priv->mainthread, "wlan_main_service"); priv->assoc_thread = create_singlethread_workqueue("libertas_assoc"); INIT_DELAYED_WORK(&priv->assoc_work, wlan_association_worker); /* * Register the device. Fillup the private data structure with * relevant information from the card and request for the required * IRQ. */ if (libertas_sbi_register_dev(priv) < 0) { lbs_pr_info("failed to register wlan device!\n"); goto err_registerdev; } /* init FW and HW */ if (libertas_init_fw(priv)) { lbs_pr_debug(1, "Firmware Init failed\n"); goto err_registerdev; } if (register_netdev(dev)) { lbs_pr_err("Cannot register network device!\n"); goto err_init_fw; } /* Register virtual mesh interface */ if (register_netdev(mesh_dev)) { lbs_pr_info("Cannot register mesh virtual interface!\n"); goto err_init_fw; } lbs_pr_info("%s: Marvell Wlan 802.11 adapter ", dev->name); libertas_debugfs_init_one(priv, dev); if (libertas_found == MAX_DEVS) goto err_init_fw; libertas_devs[libertas_found] = dev; libertas_found++; #ifdef ENABLE_PM if (!(wlan_pm_dev = pm_register(PM_UNKNOWN_DEV, 0, wlan_pm_callback))) lbs_pr_alert( "failed to register PM callback\n"); #endif if (device_create_file(&(mesh_dev->dev), &dev_attr_libertas_mpp)) goto err_create_file; LEAVE(); return priv; err_create_file: device_remove_file(&(mesh_dev->dev), &dev_attr_libertas_mpp); err_init_fw: libertas_sbi_unregister_dev(priv); err_registerdev: destroy_workqueue(priv->assoc_thread); /* Stop the thread servicing the interrupts */ wake_up_interruptible(&priv->mainthread.waitq); wlan_terminate_thread(&priv->mainthread); kfree(priv->adapter); err_kmalloc: free_netdev(dev); free_netdev(mesh_dev); wlanpriv = NULL; LEAVE(); return NULL; } static void wake_pending_cmdnodes(wlan_private *priv) { struct cmd_ctrl_node *cmdnode; unsigned long flags; spin_lock_irqsave(&priv->adapter->driver_lock, flags); list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) { cmdnode->cmdwaitqwoken = 1; wake_up_interruptible(&cmdnode->cmdwait_q); } spin_unlock_irqrestore(&priv->adapter->driver_lock, flags); } int wlan_remove_card(void *card) { wlan_private *priv = libertas_sbi_get_priv(card); wlan_adapter *adapter; struct net_device *dev; struct net_device *mesh_dev; union iwreq_data wrqu; int i; ENTER(); if (!priv) { LEAVE(); return 0; } adapter = priv->adapter; if (!adapter) { LEAVE(); return 0; } dev = priv->wlan_dev.netdev; mesh_dev = priv->mesh_dev; netif_stop_queue(mesh_dev); netif_stop_queue(priv->wlan_dev.netdev); netif_carrier_off(priv->wlan_dev.netdev); wake_pending_cmdnodes(priv); device_remove_file(&(mesh_dev->dev), &dev_attr_libertas_mpp); unregister_netdev(mesh_dev); unregister_netdev(dev); cancel_delayed_work(&priv->assoc_work); destroy_workqueue(priv->assoc_thread); if (adapter->psmode == wlan802_11powermodemax_psp) { adapter->psmode = wlan802_11powermodecam; libertas_ps_wakeup(priv, cmd_option_waitforrsp); } memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN); wrqu.ap_addr.sa_family = ARPHRD_ETHER; wireless_send_event(priv->wlan_dev.netdev, SIOCGIWAP, &wrqu, NULL); #ifdef ENABLE_PM pm_unregister(wlan_pm_dev); #endif adapter->surpriseremoved = 1; /* Stop the thread servicing the interrupts */ wlan_terminate_thread(&priv->mainthread); libertas_debugfs_remove_one(priv); lbs_pr_debug(1, "Free adapter\n"); libertas_free_adapter(priv); for (i = 0; iwlan_dev.netdev) { libertas_devs[i] = libertas_devs[--libertas_found]; libertas_devs[libertas_found] = NULL ; break ; } } lbs_pr_debug(1, "Unregister finish\n"); priv->wlan_dev.netdev = NULL; priv->mesh_dev = NULL ; free_netdev(mesh_dev); free_netdev(dev); wlanpriv = NULL; LEAVE(); return 0; } /** * @brief This function finds the CFP in * region_cfp_table based on region and band parameter. * * @param region The region code * @param band The band * @param cfp_no A pointer to CFP number * @return A pointer to CFP */ struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no) { int i, end; ENTER(); end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table); for (i = 0; i < end ; i++) { lbs_pr_debug(1, "region_cfp_table[i].region=%d\n", region_cfp_table[i].region); if (region_cfp_table[i].region == region) { *cfp_no = region_cfp_table[i].cfp_no_BG; LEAVE(); return region_cfp_table[i].cfp_BG; } } LEAVE(); return NULL; } int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band) { wlan_adapter *adapter = priv->adapter; int i = 0; struct chan_freq_power *cfp; int cfp_no; ENTER(); memset(adapter->region_channel, 0, sizeof(adapter->region_channel)); { cfp = libertas_get_region_cfp_table(region, band, &cfp_no); if (cfp != NULL) { adapter->region_channel[i].nrcfp = cfp_no; adapter->region_channel[i].CFP = cfp; } else { lbs_pr_debug(1, "wrong region code %#x in band B-G\n", region); return -1; } adapter->region_channel[i].valid = 1; adapter->region_channel[i].region = region; adapter->region_channel[i].band = band; i++; } LEAVE(); return 0; } /** * @brief This function handles the interrupt. it will change PS * state if applicable. it will wake up main_thread to handle * the interrupt event as well. * * @param dev A pointer to net_device structure * @return n/a */ void libertas_interrupt(struct net_device *dev) { wlan_private *priv = dev->priv; ENTER(); lbs_pr_debug(1, "libertas_interrupt: intcounter=%d\n", priv->adapter->intcounter); priv->adapter->intcounter++; if (priv->adapter->psstate == PS_STATE_SLEEP) { priv->adapter->psstate = PS_STATE_AWAKE; netif_wake_queue(dev); } wake_up_interruptible(&priv->mainthread.waitq); LEAVE(); } static int wlan_init_module(void) { int ret = 0; ENTER(); if (libertas_fw_name == NULL) { libertas_fw_name = default_fw_name; } libertas_debugfs_init(); if (libertas_sbi_register()) { ret = -1; libertas_debugfs_remove(); goto done; } done: LEAVE(); return ret; } static void wlan_cleanup_module(void) { int i; ENTER(); for (i = 0; ipriv; reset_device(priv); } libertas_sbi_unregister(); libertas_debugfs_remove(); LEAVE(); } module_init(wlan_init_module); module_exit(wlan_cleanup_module); MODULE_DESCRIPTION("M-WLAN Driver"); MODULE_AUTHOR("Marvell International Ltd."); MODULE_LICENSE("GPL");