diff options
Diffstat (limited to 'package/libertas/src/main.c')
| -rw-r--r-- | package/libertas/src/main.c | 1474 |
1 files changed, 1474 insertions, 0 deletions
diff --git a/package/libertas/src/main.c b/package/libertas/src/main.c new file mode 100644 index 0000000..406d874 --- /dev/null +++ b/package/libertas/src/main.c @@ -0,0 +1,1474 @@ +/** + * This file contains the major functions in WLAN + * driver. It includes init, exit, open, close and main + * thread etc.. + */ + +#include <linux/moduleparam.h> +#include <linux/delay.h> +#include <linux/freezer.h> +#include <linux/etherdevice.h> +#include <linux/netdevice.h> +#include <linux/if_arp.h> +#include <linux/kthread.h> + +#include <net/iw_handler.h> +#include <net/ieee80211.h> + +#include "host.h" +#include "decl.h" +#include "dev.h" +#include "wext.h" +#include "debugfs.h" +#include "assoc.h" +#include "join.h" +#include "cmd.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); + + +#define LBS_TX_PWR_DEFAULT 20 /*100mW */ +#define LBS_TX_PWR_US_DEFAULT 20 /*100mW */ +#define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */ +#define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */ +#define LBS_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, LBS_TX_PWR_US_DEFAULT}, + {2, 2417, LBS_TX_PWR_US_DEFAULT}, + {3, 2422, LBS_TX_PWR_US_DEFAULT}, + {4, 2427, LBS_TX_PWR_US_DEFAULT}, + {5, 2432, LBS_TX_PWR_US_DEFAULT}, + {6, 2437, LBS_TX_PWR_US_DEFAULT}, + {7, 2442, LBS_TX_PWR_US_DEFAULT}, + {8, 2447, LBS_TX_PWR_US_DEFAULT}, + {9, 2452, LBS_TX_PWR_US_DEFAULT}, + {10, 2457, LBS_TX_PWR_US_DEFAULT}, + {11, 2462, LBS_TX_PWR_US_DEFAULT} +}; + +/* band: 'B/G', region: Europe ETSI */ +static struct chan_freq_power channel_freq_power_EU_BG[] = { + {1, 2412, LBS_TX_PWR_EMEA_DEFAULT}, + {2, 2417, LBS_TX_PWR_EMEA_DEFAULT}, + {3, 2422, LBS_TX_PWR_EMEA_DEFAULT}, + {4, 2427, LBS_TX_PWR_EMEA_DEFAULT}, + {5, 2432, LBS_TX_PWR_EMEA_DEFAULT}, + {6, 2437, LBS_TX_PWR_EMEA_DEFAULT}, + {7, 2442, LBS_TX_PWR_EMEA_DEFAULT}, + {8, 2447, LBS_TX_PWR_EMEA_DEFAULT}, + {9, 2452, LBS_TX_PWR_EMEA_DEFAULT}, + {10, 2457, LBS_TX_PWR_EMEA_DEFAULT}, + {11, 2462, LBS_TX_PWR_EMEA_DEFAULT}, + {12, 2467, LBS_TX_PWR_EMEA_DEFAULT}, + {13, 2472, LBS_TX_PWR_EMEA_DEFAULT} +}; + +/* band: 'B/G', region: Spain */ +static struct chan_freq_power channel_freq_power_SPN_BG[] = { + {10, 2457, LBS_TX_PWR_DEFAULT}, + {11, 2462, LBS_TX_PWR_DEFAULT} +}; + +/* band: 'B/G', region: France */ +static struct chan_freq_power channel_freq_power_FR_BG[] = { + {10, 2457, LBS_TX_PWR_FR_DEFAULT}, + {11, 2462, LBS_TX_PWR_FR_DEFAULT}, + {12, 2467, LBS_TX_PWR_FR_DEFAULT}, + {13, 2472, LBS_TX_PWR_FR_DEFAULT} +}; + +/* band: 'B/G', region: Japan */ +static struct chan_freq_power channel_freq_power_JPN_BG[] = { + {1, 2412, LBS_TX_PWR_JP_DEFAULT}, + {2, 2417, LBS_TX_PWR_JP_DEFAULT}, + {3, 2422, LBS_TX_PWR_JP_DEFAULT}, + {4, 2427, LBS_TX_PWR_JP_DEFAULT}, + {5, 2432, LBS_TX_PWR_JP_DEFAULT}, + {6, 2437, LBS_TX_PWR_JP_DEFAULT}, + {7, 2442, LBS_TX_PWR_JP_DEFAULT}, + {8, 2447, LBS_TX_PWR_JP_DEFAULT}, + {9, 2452, LBS_TX_PWR_JP_DEFAULT}, + {10, 2457, LBS_TX_PWR_JP_DEFAULT}, + {11, 2462, LBS_TX_PWR_JP_DEFAULT}, + {12, 2467, LBS_TX_PWR_JP_DEFAULT}, + {13, 2472, LBS_TX_PWR_JP_DEFAULT}, + {14, 2484, LBS_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, + ARRAY_SIZE(channel_freq_power_US_BG), + } + , + {0x20, /*CANADA IC */ + channel_freq_power_US_BG, + ARRAY_SIZE(channel_freq_power_US_BG), + } + , + {0x30, /*EU*/ channel_freq_power_EU_BG, + ARRAY_SIZE(channel_freq_power_EU_BG), + } + , + {0x31, /*SPAIN*/ channel_freq_power_SPN_BG, + ARRAY_SIZE(channel_freq_power_SPN_BG), + } + , + {0x32, /*FRANCE*/ channel_freq_power_FR_BG, + ARRAY_SIZE(channel_freq_power_FR_BG), + } + , + {0x40, /*JAPAN*/ channel_freq_power_JPN_BG, + ARRAY_SIZE(channel_freq_power_JPN_BG), + } + , +/*Add new region here */ +}; + +/** + * the table to keep region code + */ +u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] = + { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 }; + +/** + * 802.11b/g supported bitrates (in 500Kb/s units) + */ +u8 lbs_bg_rates[MAX_RATES] = + { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c, +0x00, 0x00 }; + +/** + * 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 +}; + +/** + * @brief use index to get the data rate + * + * @param idx The index of data rate + * @return 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]; +} + +/** + * @brief use rate to get the index + * + * @param rate data rate + * @return 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; +} + +/** + * Attributes exported through sysfs + */ + +/** + * @brief Get function for sysfs attribute anycast_mask + */ +static ssize_t lbs_anycast_get(struct device *dev, + struct device_attribute *attr, char * buf) +{ + struct lbs_private *priv = to_net_dev(dev)->priv; + struct cmd_ds_mesh_access mesh_access; + int ret; + + memset(&mesh_access, 0, sizeof(mesh_access)); + + ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access); + if (ret) + return ret; + + return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0])); +} + +/** + * @brief Set function for sysfs attribute anycast_mask + */ +static ssize_t lbs_anycast_set(struct device *dev, + struct device_attribute *attr, const char * buf, size_t count) +{ + struct lbs_private *priv = to_net_dev(dev)->priv; + struct cmd_ds_mesh_access mesh_access; + uint32_t datum; + int ret; + + memset(&mesh_access, 0, sizeof(mesh_access)); + sscanf(buf, "%x", &datum); + mesh_access.data[0] = cpu_to_le32(datum); + + ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access); + if (ret) + return ret; + + return strlen(buf); +} + +static int lbs_add_rtap(struct lbs_private *priv); +static void lbs_remove_rtap(struct lbs_private *priv); +static int lbs_add_mesh(struct lbs_private *priv); +static void lbs_remove_mesh(struct lbs_private *priv); + + +/** + * Get function for sysfs attribute rtap + */ +static ssize_t lbs_rtap_get(struct device *dev, + struct device_attribute *attr, char * buf) +{ + struct lbs_private *priv = to_net_dev(dev)->priv; + return snprintf(buf, 5, "0x%X\n", priv->monitormode); +} + +/** + * Set function for sysfs attribute rtap + */ +static ssize_t lbs_rtap_set(struct device *dev, + struct device_attribute *attr, const char * buf, size_t count) +{ + int monitor_mode; + struct lbs_private *priv = to_net_dev(dev)->priv; + + sscanf(buf, "%x", &monitor_mode); + if (monitor_mode != LBS_MONITOR_OFF) { + if(priv->monitormode == monitor_mode) + return strlen(buf); + if (priv->monitormode == LBS_MONITOR_OFF) { + if (priv->infra_open || priv->mesh_open) + return -EBUSY; + if (priv->mode == IW_MODE_INFRA) + lbs_send_deauthentication(priv); + else if (priv->mode == IW_MODE_ADHOC) + lbs_stop_adhoc_network(priv); + lbs_add_rtap(priv); + } + priv->monitormode = monitor_mode; + } + + else { + if (priv->monitormode == LBS_MONITOR_OFF) + return strlen(buf); + priv->monitormode = LBS_MONITOR_OFF; + lbs_remove_rtap(priv); + + if (priv->currenttxskb) { + dev_kfree_skb_any(priv->currenttxskb); + priv->currenttxskb = NULL; + } + + /* Wake queues, command thread, etc. */ + lbs_host_to_card_done(priv); + } + + lbs_prepare_and_send_command(priv, + CMD_802_11_MONITOR_MODE, CMD_ACT_SET, + CMD_OPTION_WAITFORRSP, 0, &priv->monitormode); + return strlen(buf); +} + +/** + * lbs_rtap attribute to be exported per ethX interface + * through sysfs (/sys/class/net/ethX/lbs_rtap) + */ +static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set ); + +/** + * Get function for sysfs attribute mesh + */ +static ssize_t lbs_mesh_get(struct device *dev, + struct device_attribute *attr, char * buf) +{ + struct lbs_private *priv = to_net_dev(dev)->priv; + return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev); +} + +/** + * Set function for sysfs attribute mesh + */ +static ssize_t lbs_mesh_set(struct device *dev, + struct device_attribute *attr, const char * buf, size_t count) +{ + struct lbs_private *priv = to_net_dev(dev)->priv; + int enable; + int ret; + + sscanf(buf, "%x", &enable); + enable = !!enable; + if (enable == !!priv->mesh_dev) + return count; + + ret = lbs_mesh_config(priv, enable); + if (ret) + return ret; + + if (enable) + lbs_add_mesh(priv); + else + lbs_remove_mesh(priv); + + return count; +} + +/** + * lbs_mesh attribute to be exported per ethX interface + * through sysfs (/sys/class/net/ethX/lbs_mesh) + */ +static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set); + +/** + * anycast_mask attribute to be exported per mshX interface + * through sysfs (/sys/class/net/mshX/anycast_mask) + */ +static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set); + +static struct attribute *lbs_mesh_sysfs_entries[] = { + &dev_attr_anycast_mask.attr, + NULL, +}; + +static struct attribute_group lbs_mesh_attr_group = { + .attrs = lbs_mesh_sysfs_entries, +}; + +/** + * @brief This function opens the ethX or mshX interface + * + * @param dev A pointer to net_device structure + * @return 0 or -EBUSY if monitor mode active + */ +static int lbs_dev_open(struct net_device *dev) +{ + struct lbs_private *priv = (struct lbs_private *) dev->priv ; + int ret = 0; + + spin_lock_irq(&priv->driver_lock); + + if (priv->monitormode != LBS_MONITOR_OFF) { + ret = -EBUSY; + goto out; + } + + if (dev == priv->mesh_dev) { + priv->mesh_open = 1; + priv->mesh_connect_status = LBS_CONNECTED; + netif_carrier_on(dev); + } else { + priv->infra_open = 1; + + if (priv->connect_status == LBS_CONNECTED) + netif_carrier_on(dev); + else + netif_carrier_off(dev); + } + + if (!priv->tx_pending_len) + netif_wake_queue(dev); + out: + + spin_unlock_irq(&priv->driver_lock); + return ret; +} + +/** + * @brief This function closes the mshX interface + * + * @param dev A pointer to net_device structure + * @return 0 + */ +static int lbs_mesh_stop(struct net_device *dev) +{ + struct lbs_private *priv = (struct lbs_private *) (dev->priv); + + spin_lock_irq(&priv->driver_lock); + + priv->mesh_open = 0; + priv->mesh_connect_status = LBS_DISCONNECTED; + + netif_stop_queue(dev); + netif_carrier_off(dev); + + spin_unlock_irq(&priv->driver_lock); + return 0; +} + +/** + * @brief This function closes the ethX interface + * + * @param dev A pointer to net_device structure + * @return 0 + */ +static int lbs_eth_stop(struct net_device *dev) +{ + struct lbs_private *priv = (struct lbs_private *) dev->priv; + + spin_lock_irq(&priv->driver_lock); + + priv->infra_open = 0; + + netif_stop_queue(dev); + + spin_unlock_irq(&priv->driver_lock); + return 0; +} + +static void lbs_tx_timeout(struct net_device *dev) +{ + struct lbs_private *priv = (struct lbs_private *) dev->priv; + + lbs_deb_enter(LBS_DEB_TX); + + lbs_pr_err("tx watch dog timeout\n"); + + dev->trans_start = jiffies; + + if (priv->currenttxskb) { + priv->eventcause = 0x01000000; + lbs_send_tx_feedback(priv); + } + /* XX: Shouldn't we also call into the hw-specific driver + to kick it somehow? */ + lbs_host_to_card_done(priv); + + lbs_deb_leave(LBS_DEB_TX); +} + +void lbs_host_to_card_done(struct lbs_private *priv) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->driver_lock, flags); + + priv->dnld_sent = DNLD_RES_RECEIVED; + + /* Wake main thread if commands are pending */ + if (!priv->cur_cmd) + wake_up_interruptible(&priv->waitq); + + /* Don't wake netif queues if we're in monitor mode and + a TX packet is already pending, or if there are commands + queued to be sent. */ + if (!priv->currenttxskb && list_empty(&priv->cmdpendingq)) { + if (priv->dev && priv->connect_status == LBS_CONNECTED) + netif_wake_queue(priv->dev); + + if (priv->mesh_dev && priv->mesh_connect_status == LBS_CONNECTED) + netif_wake_queue(priv->mesh_dev); + } + spin_unlock_irqrestore(&priv->driver_lock, flags); +} +EXPORT_SYMBOL_GPL(lbs_host_to_card_done); + +/** + * @brief This function returns the network statistics + * + * @param dev A pointer to struct lbs_private structure + * @return A pointer to net_device_stats structure + */ +static struct net_device_stats *lbs_get_stats(struct net_device *dev) +{ + struct lbs_private *priv = (struct lbs_private *) dev->priv; + + return &priv->stats; +} + +static int lbs_set_mac_address(struct net_device *dev, void *addr) +{ + int ret = 0; + struct lbs_private *priv = (struct lbs_private *) dev->priv; + struct sockaddr *phwaddr = addr; + + lbs_deb_enter(LBS_DEB_NET); + + /* In case it was called from the mesh device */ + dev = priv->dev ; + + memset(priv->current_addr, 0, ETH_ALEN); + + /* dev->dev_addr is 8 bytes */ + lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN); + + lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN); + memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN); + + ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS, + CMD_ACT_SET, + CMD_OPTION_WAITFORRSP, 0, NULL); + + if (ret) { + lbs_deb_net("set MAC address failed\n"); + ret = -1; + goto done; + } + + lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN); + memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN); + if (priv->mesh_dev) + memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN); + +done: + lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret); + return ret; +} + +static int lbs_copy_multicast_address(struct lbs_private *priv, + struct net_device *dev) +{ + int i = 0; + struct dev_mc_list *mcptr = dev->mc_list; + + for (i = 0; i < dev->mc_count; i++) { + memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN); + mcptr = mcptr->next; + } + + return i; + +} + +static void lbs_set_multicast_list(struct net_device *dev) +{ + struct lbs_private *priv = dev->priv; + int oldpacketfilter; + DECLARE_MAC_BUF(mac); + + lbs_deb_enter(LBS_DEB_NET); + + oldpacketfilter = priv->currentpacketfilter; + + if (dev->flags & IFF_PROMISC) { + lbs_deb_net("enable promiscuous mode\n"); + priv->currentpacketfilter |= + CMD_ACT_MAC_PROMISCUOUS_ENABLE; + priv->currentpacketfilter &= + ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE | + CMD_ACT_MAC_MULTICAST_ENABLE); + } else { + /* Multicast */ + priv->currentpacketfilter &= + ~CMD_ACT_MAC_PROMISCUOUS_ENABLE; + + if (dev->flags & IFF_ALLMULTI || dev->mc_count > + MRVDRV_MAX_MULTICAST_LIST_SIZE) { + lbs_deb_net( "enabling all multicast\n"); + priv->currentpacketfilter |= + CMD_ACT_MAC_ALL_MULTICAST_ENABLE; + priv->currentpacketfilter &= + ~CMD_ACT_MAC_MULTICAST_ENABLE; + } else { + priv->currentpacketfilter &= + ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE; + + if (!dev->mc_count) { + lbs_deb_net("no multicast addresses, " + "disabling multicast\n"); + priv->currentpacketfilter &= + ~CMD_ACT_MAC_MULTICAST_ENABLE; + } else { + int i; + + priv->currentpacketfilter |= + CMD_ACT_MAC_MULTICAST_ENABLE; + + priv->nr_of_multicastmacaddr = + lbs_copy_multicast_address(priv, dev); + + lbs_deb_net("multicast addresses: %d\n", + dev->mc_count); + + for (i = 0; i < dev->mc_count; i++) { + lbs_deb_net("Multicast address %d:%s\n", + i, print_mac(mac, + priv->multicastlist[i])); + } + /* send multicast addresses to firmware */ + lbs_prepare_and_send_command(priv, + CMD_MAC_MULTICAST_ADR, + CMD_ACT_SET, 0, 0, + NULL); + } + } + } + + if (priv->currentpacketfilter != oldpacketfilter) { + lbs_set_mac_packet_filter(priv); + } + + lbs_deb_leave(LBS_DEB_NET); +} + +/** + * @brief This function 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. + * + * @param data A pointer to lbs_thread structure + * @return 0 + */ +static int lbs_thread(void *data) +{ + struct net_device *dev = data; + struct lbs_private *priv = dev->priv; + wait_queue_t wait; + u8 ireg = 0; + + lbs_deb_enter(LBS_DEB_THREAD); + + init_waitqueue_entry(&wait, current); + + set_freezable(); + + for (;;) { + int shouldsleep; + + lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n", + priv->intcounter, priv->currenttxskb, priv->dnld_sent); + + add_wait_queue(&priv->waitq, &wait); + set_current_state(TASK_INTERRUPTIBLE); + spin_lock_irq(&priv->driver_lock); + + if (priv->surpriseremoved) + shouldsleep = 0; /* Bye */ + else if (priv->psstate == PS_STATE_SLEEP) + shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */ + else if (priv->intcounter) + shouldsleep = 0; /* Interrupt pending. Deal with it now */ + 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->cur_cmd) + shouldsleep = 1; /* Can't send a command; one already running */ + else if (!list_empty(&priv->cmdpendingq)) + shouldsleep = 0; /* We have a command to send */ + else + shouldsleep = 1; /* No command */ + + if (shouldsleep) { + lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n", + priv->connect_status, priv->intcounter, + priv->psmode, priv->psstate); + spin_unlock_irq(&priv->driver_lock); + schedule(); + } else + spin_unlock_irq(&priv->driver_lock); + + lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n", + priv->intcounter, priv->currenttxskb, priv->dnld_sent); + + set_current_state(TASK_RUNNING); + remove_wait_queue(&priv->waitq, &wait); + try_to_freeze(); + + lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n", + priv->intcounter, priv->currenttxskb, priv->dnld_sent); + + if (kthread_should_stop() || priv->surpriseremoved) { + lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n", + priv->surpriseremoved); + break; + } + + + spin_lock_irq(&priv->driver_lock); + + if (priv->intcounter) { + u8 int_status; + + priv->intcounter = 0; + int_status = priv->hw_get_int_status(priv, &ireg); + + if (int_status) { + lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n"); + spin_unlock_irq(&priv->driver_lock); + continue; + } + priv->hisregcpy |= ireg; + } + + lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n", + priv->intcounter, priv->currenttxskb, priv->dnld_sent); + + /* command response? */ + if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) { + lbs_deb_thread("main-thread: cmd response ready\n"); + + priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY; + spin_unlock_irq(&priv->driver_lock); + lbs_process_rx_command(priv); + spin_lock_irq(&priv->driver_lock); + } + + /* Any Card Event */ + if (priv->hisregcpy & MRVDRV_CARDEVENT) { + lbs_deb_thread("main-thread: Card Event Activity\n"); + + priv->hisregcpy &= ~MRVDRV_CARDEVENT; + + if (priv->hw_read_event_cause(priv)) { + lbs_pr_alert("main-thread: hw_read_event_cause failed\n"); + spin_unlock_irq(&priv->driver_lock); + continue; + } + spin_unlock_irq(&priv->driver_lock); + lbs_process_event(priv); + } else + spin_unlock_irq(&priv->driver_lock); + + 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("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n", + priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd); + + lbs_ps_confirm_sleep(priv, (u16) priv->psmode); + } else { + /* workaround for firmware sending + * deauth/linkloss event immediately + * after sleep request; remove this + * after firmware fixes it + */ + priv->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->psstate == PS_STATE_SLEEP) || + (priv->psstate == PS_STATE_PRE_SLEEP)) + continue; + + /* Execute the next command */ + if (!priv->dnld_sent && !priv->cur_cmd) + lbs_execute_next_command(priv); + + /* Wake-up command waiters which can't sleep in + * lbs_prepare_and_send_command + */ + if (!list_empty(&priv->cmdpendingq)) + wake_up_all(&priv->cmd_pending); + + 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; + } + 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 && + priv->mesh_connect_status == LBS_CONNECTED) + netif_wake_queue(priv->mesh_dev); + } + } + spin_unlock_irq(&priv->driver_lock); + } + + del_timer(&priv->command_timer); + wake_up_all(&priv->cmd_pending); + + lbs_deb_leave(LBS_DEB_THREAD); + return 0; +} + +/** + * @brief This function downloads firmware image, gets + * HW spec from firmware and set basic parameters to + * firmware. + * + * @param priv A pointer to struct lbs_private structure + * @return 0 or -1 + */ +static int lbs_setup_firmware(struct lbs_private *priv) +{ + int ret = -1; + + lbs_deb_enter(LBS_DEB_FW); + + /* + * Read MAC address from HW + */ + memset(priv->current_addr, 0xff, ETH_ALEN); + ret = lbs_update_hw_spec(priv); + if (ret) { + ret = -1; + goto done; + } + + lbs_set_mac_packet_filter(priv); + + ret = lbs_get_data_rate(priv); + if (ret < 0) { + ret = -1; + goto done; + } + + ret = 0; +done: + lbs_deb_leave_args(LBS_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 lbs_private *priv = (struct lbs_private *)data; + struct cmd_ctrl_node *node; + unsigned long flags; + + node = priv->cur_cmd; + if (node == NULL) { + lbs_deb_fw("ptempnode empty\n"); + return; + } + + if (!node->cmdbuf) { + lbs_deb_fw("cmd is NULL\n"); + return; + } + + lbs_deb_fw("command_timer_fn fired, cmd %x\n", node->cmdbuf->command); + + if (!priv->fw_ready) + return; + + spin_lock_irqsave(&priv->driver_lock, flags); + priv->cur_cmd = NULL; + spin_unlock_irqrestore(&priv->driver_lock, flags); + + lbs_deb_fw("re-sending same command because of timeout\n"); + lbs_queue_cmd(priv, node, 0); + + wake_up_interruptible(&priv->waitq); + + return; +} + +static int lbs_init_adapter(struct lbs_private *priv) +{ + size_t bufsize; + int i, ret = 0; + + /* Allocate buffer to store the BSSID list */ + bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor); + priv->networks = kzalloc(bufsize, GFP_KERNEL); + if (!priv->networks) { + lbs_pr_err("Out of memory allocating beacons\n"); + ret = -1; + goto out; + } + + /* Initialize scan result lists */ + INIT_LIST_HEAD(&priv->network_free_list); + INIT_LIST_HEAD(&priv->network_list); + for (i = 0; i < MAX_NETWORK_COUNT; i++) { + list_add_tail(&priv->networks[i].list, + &priv->network_free_list); + } + + priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum); + priv->lbs_ps_confirm_sleep.command = + cpu_to_le16(CMD_802_11_PS_MODE); + priv->lbs_ps_confirm_sleep.size = + cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep)); + priv->lbs_ps_confirm_sleep.action = + cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED); + + memset(priv->current_addr, 0xff, ETH_ALEN); + + priv->connect_status = LBS_DISCONNECTED; + priv->mesh_connect_status = LBS_DISCONNECTED; + priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM; + priv->mode = IW_MODE_INFRA; + priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL; + priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON; + priv->radioon = RADIO_ON; + priv->auto_rate = 1; + priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE; + priv->psmode = LBS802_11POWERMODECAM; + priv->psstate = PS_STATE_FULL_POWER; + + mutex_init(&priv->lock); + + 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); + init_waitqueue_head(&priv->cmd_pending); + + /* Allocate the command buffers */ + if (lbs_allocate_cmd_buffer(priv)) { + lbs_pr_err("Out of memory allocating command buffers\n"); + ret = -1; + } + +out: + return ret; +} + +static void lbs_free_adapter(struct lbs_private *priv) +{ + lbs_deb_fw("free command buffer\n"); + lbs_free_cmd_buffer(priv); + + lbs_deb_fw("free command_timer\n"); + del_timer(&priv->command_timer); + + lbs_deb_fw("free scan results table\n"); + kfree(priv->networks); + priv->networks = NULL; +} + +/** + * @brief This function adds the card. it will probe the + * card, allocate the lbs_priv and initialize the device. + * + * @param card A pointer to card + * @return A pointer to struct lbs_private structure + */ +struct lbs_private *lbs_add_card(void *card, struct device *dmdev) +{ + struct net_device *dev = NULL; + struct lbs_private *priv = NULL; + + lbs_deb_enter(LBS_DEB_NET); + + /* Allocate an Ethernet device and register it */ + dev = alloc_etherdev(sizeof(struct lbs_private)); + if (!dev) { + lbs_pr_err("init ethX device failed\n"); + goto done; + } + priv = dev->priv; + + if (lbs_init_adapter(priv)) { + lbs_pr_err("failed to initialize adapter structure.\n"); + goto err_init_adapter; + } + + priv->dev = dev; + priv->card = card; + priv->mesh_open = 0; + priv->infra_open = 0; + + /* Setup the OS Interface to our functions */ + dev->open = lbs_dev_open; + dev->hard_start_xmit = lbs_hard_start_xmit; + dev->stop = lbs_eth_stop; + dev->set_mac_address = lbs_set_mac_address; + dev->tx_timeout = lbs_tx_timeout; + dev->get_stats = lbs_get_stats; + dev->watchdog_timeo = 5 * HZ; + dev->ethtool_ops = &lbs_ethtool_ops; +#ifdef WIRELESS_EXT + dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def; +#endif + dev->flags |= IFF_BROADCAST | IFF_MULTICAST; + dev->set_multicast_list = lbs_set_multicast_list; + + SET_NETDEV_DEV(dev, dmdev); + + priv->rtap_net_dev = NULL; + + 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_init_adapter; + } + + priv->work_thread = create_singlethread_workqueue("lbs_worker"); + INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker); + INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker); + INIT_WORK(&priv->sync_channel, lbs_sync_channel); + + sprintf(priv->mesh_ssid, "mesh"); + priv->mesh_ssid_len = 4; + + goto done; + +err_init_adapter: + lbs_free_adapter(priv); + free_netdev(dev); + priv = NULL; + +done: + lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv); + return priv; +} +EXPORT_SYMBOL_GPL(lbs_add_card); + + +int lbs_remove_card(struct lbs_private *priv) +{ + struct net_device *dev = priv->dev; + union iwreq_data wrqu; + + lbs_deb_enter(LBS_DEB_MAIN); + + lbs_remove_mesh(priv); + lbs_remove_rtap(priv); + + dev = priv->dev; + + cancel_delayed_work(&priv->scan_work); + cancel_delayed_work(&priv->assoc_work); + destroy_workqueue(priv->work_thread); + + if (priv->psmode == LBS802_11POWERMODEMAX_PSP) { + priv->psmode = LBS802_11POWERMODECAM; + lbs_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->dev, SIOCGIWAP, &wrqu, NULL); + + /* Stop the thread servicing the interrupts */ + priv->surpriseremoved = 1; + kthread_stop(priv->main_thread); + + lbs_free_adapter(priv); + + priv->dev = NULL; + free_netdev(dev); + + lbs_deb_leave(LBS_DEB_MAIN); + return 0; +} +EXPORT_SYMBOL_GPL(lbs_remove_card); + + +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; + + /* init 802.11d */ + lbs_init_11d(priv); + + if (register_netdev(dev)) { + lbs_pr_err("cannot register ethX device\n"); + goto done; + } + if (device_create_file(&dev->dev, &dev_attr_lbs_rtap)) + lbs_pr_err("cannot register lbs_rtap attribute\n"); + if (device_create_file(&dev->dev, &dev_attr_lbs_mesh)) + lbs_pr_err("cannot register lbs_mesh attribute\n"); + + lbs_debugfs_init_one(priv, dev); + + lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name); + + ret = 0; + +done: + lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret); + return ret; +} +EXPORT_SYMBOL_GPL(lbs_start_card); + + +int lbs_stop_card(struct lbs_private *priv) +{ + struct net_device *dev = priv->dev; + int ret = -1; + struct cmd_ctrl_node *cmdnode; + unsigned long flags; + + lbs_deb_enter(LBS_DEB_MAIN); + + netif_stop_queue(priv->dev); + netif_carrier_off(priv->dev); + + lbs_debugfs_remove_one(priv); + device_remove_file(&dev->dev, &dev_attr_lbs_rtap); + device_remove_file(&dev->dev, &dev_attr_lbs_mesh); + + /* Flush pending command nodes */ + spin_lock_irqsave(&priv->driver_lock, flags); + list_for_each_entry(cmdnode, &priv->cmdpendingq, list) { + cmdnode->cmdwaitqwoken = 1; + wake_up_interruptible(&cmdnode->cmdwait_q); + } + spin_unlock_irqrestore(&priv->driver_lock, flags); + + unregister_netdev(dev); + + lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret); + return ret; +} +EXPORT_SYMBOL_GPL(lbs_stop_card); + + +/** + * @brief This function adds mshX interface + * + * @param priv A pointer to the struct lbs_private structure + * @return 0 if successful, -X otherwise + */ +static int lbs_add_mesh(struct lbs_private *priv) +{ + struct net_device *mesh_dev = NULL; + int ret = 0; + + lbs_deb_enter(LBS_DEB_MESH); + + /* Allocate a virtual mesh device */ + if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) { + lbs_deb_mesh("init mshX device failed\n"); + ret = -ENOMEM; + goto done; + } + mesh_dev->priv = priv; + priv->mesh_dev = mesh_dev; + + mesh_dev->open = lbs_dev_open; + mesh_dev->hard_start_xmit = lbs_hard_start_xmit; + mesh_dev->stop = lbs_mesh_stop; + mesh_dev->get_stats = lbs_get_stats; + mesh_dev->set_mac_address = lbs_set_mac_address; + mesh_dev->ethtool_ops = &lbs_ethtool_ops; + memcpy(mesh_dev->dev_addr, priv->dev->dev_addr, + sizeof(priv->dev->dev_addr)); + + SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent); + +#ifdef WIRELESS_EXT + mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def; +#endif + /* Register virtual mesh interface */ + ret = register_netdev(mesh_dev); + if (ret) { + lbs_pr_err("cannot register mshX virtual interface\n"); + goto err_free; + } + + ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group); + if (ret) + goto err_unregister; + + /* Everything successful */ + ret = 0; + goto done; + +err_unregister: + unregister_netdev(mesh_dev); + +err_free: + free_netdev(mesh_dev); + +done: + lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret); + return ret; +} +EXPORT_SYMBOL_GPL(lbs_add_mesh); + + +static void lbs_remove_mesh(struct lbs_private *priv) +{ + struct net_device *mesh_dev; + + lbs_deb_enter(LBS_DEB_MAIN); + + if (!priv) + goto out; + + mesh_dev = priv->mesh_dev; + if (!mesh_dev) + goto out; + + netif_stop_queue(mesh_dev); + netif_carrier_off(priv->mesh_dev); + + sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group); + unregister_netdev(mesh_dev); + + priv->mesh_dev = NULL; + free_netdev(mesh_dev); + +out: + lbs_deb_leave(LBS_DEB_MAIN); +} +EXPORT_SYMBOL_GPL(lbs_remove_mesh); + +/** + * @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 *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no) +{ + int i, end; + + lbs_deb_enter(LBS_DEB_MAIN); + + end = ARRAY_SIZE(region_cfp_table); + + for (i = 0; i < end ; i++) { + lbs_deb_main("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; + lbs_deb_leave(LBS_DEB_MAIN); + return region_cfp_table[i].cfp_BG; + } + } + + lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL"); + return NULL; +} + +int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band) +{ + int ret = 0; + int i = 0; + + struct chan_freq_power *cfp; + int cfp_no; + + lbs_deb_enter(LBS_DEB_MAIN); + + memset(priv->region_channel, 0, sizeof(priv->region_channel)); + + { + cfp = lbs_get_region_cfp_table(region, band, &cfp_no); + if (cfp != NULL) { + priv->region_channel[i].nrcfp = cfp_no; + priv->region_channel[i].CFP = cfp; + } else { + lbs_deb_main("wrong region code %#x in band B/G\n", + region); + ret = -1; + goto out; + } + priv->region_channel[i].valid = 1; + priv->region_channel[i].region = region; + priv->region_channel[i].band = band; + i++; + } +out: + lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret); + return ret; +} + +/** + * @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 lbs_interrupt(struct lbs_private *priv) +{ + lbs_deb_enter(LBS_DEB_THREAD); + + lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter); + + if (!spin_trylock(&priv->driver_lock)) { + spin_unlock(&priv->driver_lock); + printk(KERN_CRIT "%s called without driver_lock held\n", __func__); + WARN_ON(1); + } + + priv->intcounter++; + + if (priv->psstate == PS_STATE_SLEEP) + priv->psstate = PS_STATE_AWAKE; + + wake_up_interruptible(&priv->waitq); + + lbs_deb_leave(LBS_DEB_THREAD); +} +EXPORT_SYMBOL_GPL(lbs_interrupt); + +int lbs_reset_device(struct lbs_private *priv) +{ + int ret; + + lbs_deb_enter(LBS_DEB_MAIN); + ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET, + CMD_ACT_HALT, 0, 0, NULL); + msleep_interruptible(10); + + lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret); + return ret; +} +EXPORT_SYMBOL_GPL(lbs_reset_device); + +static int __init lbs_init_module(void) +{ + lbs_deb_enter(LBS_DEB_MAIN); + 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); +} + +/* + * rtap interface support fuctions + */ + +static int lbs_rtap_open(struct net_device *dev) +{ + /* Yes, _stop_ the queue. Because we don't support injection */ + netif_carrier_off(dev); + netif_stop_queue(dev); + return 0; +} + +static int lbs_rtap_stop(struct net_device *dev) +{ + return 0; +} + +static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + netif_stop_queue(dev); + return NETDEV_TX_BUSY; +} + +static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev) +{ + struct lbs_private *priv = dev->priv; + return &priv->stats; +} + + +static void lbs_remove_rtap(struct lbs_private *priv) +{ + if (priv->rtap_net_dev == NULL) + return; + unregister_netdev(priv->rtap_net_dev); + free_netdev(priv->rtap_net_dev); + priv->rtap_net_dev = NULL; +} + +static int lbs_add_rtap(struct lbs_private *priv) +{ + int rc = 0; + struct net_device *rtap_dev; + + if (priv->rtap_net_dev) + return -EPERM; + + rtap_dev = alloc_netdev(0, "rtap%d", ether_setup); + if (rtap_dev == NULL) + return -ENOMEM; + + memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN); + rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP; + rtap_dev->open = lbs_rtap_open; + rtap_dev->stop = lbs_rtap_stop; + rtap_dev->get_stats = lbs_rtap_get_stats; + rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit; + rtap_dev->set_multicast_list = lbs_set_multicast_list; + rtap_dev->priv = priv; + + rc = register_netdev(rtap_dev); + if (rc) { + free_netdev(rtap_dev); + return rc; + } + priv->rtap_net_dev = rtap_dev; + + return 0; +} + + +module_init(lbs_init_module); +module_exit(lbs_exit_module); + +MODULE_DESCRIPTION("Libertas WLAN Driver Library"); +MODULE_AUTHOR("Marvell International Ltd."); +MODULE_LICENSE("GPL"); |