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1156 lines
28 KiB
1156 lines
28 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
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* This file contains the major functions in WLAN |
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* driver. It includes init, exit, open, close and main |
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* thread etc.. |
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*/ |
|
|
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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|
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#include <linux/module.h> |
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#include <linux/delay.h> |
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#include <linux/etherdevice.h> |
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#include <linux/hardirq.h> |
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#include <linux/netdevice.h> |
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#include <linux/if_arp.h> |
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#include <linux/kthread.h> |
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#include <linux/kfifo.h> |
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#include <linux/slab.h> |
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#include <net/cfg80211.h> |
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|
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#include "host.h" |
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#include "decl.h" |
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#include "dev.h" |
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#include "cfg.h" |
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#include "debugfs.h" |
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#include "cmd.h" |
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#include "mesh.h" |
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|
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#define DRIVER_RELEASE_VERSION "323.p0" |
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const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION |
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#ifdef DEBUG |
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"-dbg" |
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#endif |
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""; |
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|
|
|
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/* Module parameters */ |
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unsigned int lbs_debug; |
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EXPORT_SYMBOL_GPL(lbs_debug); |
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module_param_named(libertas_debug, lbs_debug, int, 0644); |
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|
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unsigned int lbs_disablemesh; |
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EXPORT_SYMBOL_GPL(lbs_disablemesh); |
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module_param_named(libertas_disablemesh, lbs_disablemesh, int, 0644); |
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|
|
|
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/* |
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* This global structure is used to send the confirm_sleep command as |
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* fast as possible down to the firmware. |
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*/ |
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struct cmd_confirm_sleep confirm_sleep; |
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|
|
|
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/* |
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* the table to keep region code |
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*/ |
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u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] = |
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{ 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 }; |
|
|
|
/* |
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* FW rate table. FW refers to rates by their index in this table, not by the |
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* rate value itself. Values of 0x00 are |
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* reserved positions. |
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*/ |
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static u8 fw_data_rates[MAX_RATES] = |
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{ 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12, |
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0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00 |
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}; |
|
|
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/** |
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* lbs_fw_index_to_data_rate - use index to get the data rate |
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* |
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* @idx: The index of data rate |
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* returns: data rate or 0 |
|
*/ |
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u32 lbs_fw_index_to_data_rate(u8 idx) |
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{ |
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if (idx >= sizeof(fw_data_rates)) |
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idx = 0; |
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return fw_data_rates[idx]; |
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} |
|
|
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/** |
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* lbs_data_rate_to_fw_index - use rate to get the index |
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* |
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* @rate: data rate |
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* returns: index or 0 |
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*/ |
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u8 lbs_data_rate_to_fw_index(u32 rate) |
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{ |
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u8 i; |
|
|
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if (!rate) |
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return 0; |
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|
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for (i = 0; i < sizeof(fw_data_rates); i++) { |
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if (rate == fw_data_rates[i]) |
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return i; |
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} |
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return 0; |
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} |
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|
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int lbs_set_iface_type(struct lbs_private *priv, enum nl80211_iftype type) |
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{ |
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int ret = 0; |
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|
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switch (type) { |
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case NL80211_IFTYPE_MONITOR: |
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ret = lbs_set_monitor_mode(priv, 1); |
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break; |
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case NL80211_IFTYPE_STATION: |
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if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR) |
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ret = lbs_set_monitor_mode(priv, 0); |
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if (!ret) |
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ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1); |
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break; |
|
case NL80211_IFTYPE_ADHOC: |
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if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR) |
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ret = lbs_set_monitor_mode(priv, 0); |
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if (!ret) |
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ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2); |
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break; |
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default: |
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ret = -ENOTSUPP; |
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} |
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return ret; |
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} |
|
|
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int lbs_start_iface(struct lbs_private *priv) |
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{ |
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struct cmd_ds_802_11_mac_address cmd; |
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int ret; |
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|
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if (priv->power_restore) { |
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ret = priv->power_restore(priv); |
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if (ret) |
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return ret; |
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} |
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|
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cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
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cmd.action = cpu_to_le16(CMD_ACT_SET); |
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memcpy(cmd.macadd, priv->current_addr, ETH_ALEN); |
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|
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ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd); |
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if (ret) { |
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lbs_deb_net("set MAC address failed\n"); |
|
goto err; |
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} |
|
|
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ret = lbs_set_iface_type(priv, priv->wdev->iftype); |
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if (ret) { |
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lbs_deb_net("set iface type failed\n"); |
|
goto err; |
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} |
|
|
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ret = lbs_set_11d_domain_info(priv); |
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if (ret) { |
|
lbs_deb_net("set 11d domain info failed\n"); |
|
goto err; |
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} |
|
|
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lbs_update_channel(priv); |
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|
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priv->iface_running = true; |
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return 0; |
|
|
|
err: |
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if (priv->power_save) |
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priv->power_save(priv); |
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return ret; |
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} |
|
|
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/** |
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* lbs_dev_open - open the ethX interface |
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* |
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* @dev: A pointer to &net_device structure |
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* returns: 0 or -EBUSY if monitor mode active |
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*/ |
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static int lbs_dev_open(struct net_device *dev) |
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{ |
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struct lbs_private *priv = dev->ml_priv; |
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int ret = 0; |
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|
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if (!priv->iface_running) { |
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ret = lbs_start_iface(priv); |
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if (ret) |
|
goto out; |
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} |
|
|
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spin_lock_irq(&priv->driver_lock); |
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|
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netif_carrier_off(dev); |
|
|
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if (!priv->tx_pending_len) |
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netif_wake_queue(dev); |
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|
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spin_unlock_irq(&priv->driver_lock); |
|
|
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out: |
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return ret; |
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} |
|
|
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static bool lbs_command_queue_empty(struct lbs_private *priv) |
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{ |
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unsigned long flags; |
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bool ret; |
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spin_lock_irqsave(&priv->driver_lock, flags); |
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ret = priv->cur_cmd == NULL && list_empty(&priv->cmdpendingq); |
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spin_unlock_irqrestore(&priv->driver_lock, flags); |
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return ret; |
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} |
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|
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int lbs_stop_iface(struct lbs_private *priv) |
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{ |
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unsigned long flags; |
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int ret = 0; |
|
|
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spin_lock_irqsave(&priv->driver_lock, flags); |
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priv->iface_running = false; |
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kfree_skb(priv->currenttxskb); |
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priv->currenttxskb = NULL; |
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priv->tx_pending_len = 0; |
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spin_unlock_irqrestore(&priv->driver_lock, flags); |
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|
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cancel_work_sync(&priv->mcast_work); |
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del_timer_sync(&priv->tx_lockup_timer); |
|
|
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/* Disable command processing, and wait for all commands to complete */ |
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lbs_deb_main("waiting for commands to complete\n"); |
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wait_event(priv->waitq, lbs_command_queue_empty(priv)); |
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lbs_deb_main("all commands completed\n"); |
|
|
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if (priv->power_save) |
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ret = priv->power_save(priv); |
|
|
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return ret; |
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} |
|
|
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/** |
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* lbs_eth_stop - close the ethX interface |
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* |
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* @dev: A pointer to &net_device structure |
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* returns: 0 |
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*/ |
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static int lbs_eth_stop(struct net_device *dev) |
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{ |
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struct lbs_private *priv = dev->ml_priv; |
|
|
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if (priv->connect_status == LBS_CONNECTED) |
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lbs_disconnect(priv, WLAN_REASON_DEAUTH_LEAVING); |
|
|
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spin_lock_irq(&priv->driver_lock); |
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netif_stop_queue(dev); |
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spin_unlock_irq(&priv->driver_lock); |
|
|
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lbs_update_mcast(priv); |
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cancel_delayed_work_sync(&priv->scan_work); |
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if (priv->scan_req) |
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lbs_scan_done(priv); |
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|
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netif_carrier_off(priv->dev); |
|
|
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if (!lbs_iface_active(priv)) |
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lbs_stop_iface(priv); |
|
|
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return 0; |
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} |
|
|
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void lbs_host_to_card_done(struct lbs_private *priv) |
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{ |
|
unsigned long flags; |
|
|
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spin_lock_irqsave(&priv->driver_lock, flags); |
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del_timer(&priv->tx_lockup_timer); |
|
|
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priv->dnld_sent = DNLD_RES_RECEIVED; |
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|
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/* Wake main thread if commands are pending */ |
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if (!priv->cur_cmd || priv->tx_pending_len > 0) { |
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if (!priv->wakeup_dev_required) |
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wake_up(&priv->waitq); |
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} |
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|
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spin_unlock_irqrestore(&priv->driver_lock, flags); |
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} |
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EXPORT_SYMBOL_GPL(lbs_host_to_card_done); |
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|
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int lbs_set_mac_address(struct net_device *dev, void *addr) |
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{ |
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int ret = 0; |
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struct lbs_private *priv = dev->ml_priv; |
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struct sockaddr *phwaddr = addr; |
|
|
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/* |
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* Can only set MAC address when all interfaces are down, to be written |
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* to the hardware when one of them is brought up. |
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*/ |
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if (lbs_iface_active(priv)) |
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return -EBUSY; |
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|
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/* In case it was called from the mesh device */ |
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dev = priv->dev; |
|
|
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memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN); |
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memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN); |
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if (priv->mesh_dev) |
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memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN); |
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|
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return ret; |
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} |
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|
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|
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static inline int mac_in_list(unsigned char *list, int list_len, |
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unsigned char *mac) |
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{ |
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while (list_len) { |
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if (!memcmp(list, mac, ETH_ALEN)) |
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return 1; |
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list += ETH_ALEN; |
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list_len--; |
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} |
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return 0; |
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} |
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|
|
|
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static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd, |
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struct net_device *dev, int nr_addrs) |
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{ |
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int i = nr_addrs; |
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struct netdev_hw_addr *ha; |
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int cnt; |
|
|
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if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST)) |
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return nr_addrs; |
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|
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netif_addr_lock_bh(dev); |
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cnt = netdev_mc_count(dev); |
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netdev_for_each_mc_addr(ha, dev) { |
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if (mac_in_list(cmd->maclist, nr_addrs, ha->addr)) { |
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lbs_deb_net("mcast address %s:%pM skipped\n", dev->name, |
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ha->addr); |
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cnt--; |
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continue; |
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} |
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|
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if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE) |
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break; |
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memcpy(&cmd->maclist[6*i], ha->addr, ETH_ALEN); |
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lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name, |
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ha->addr); |
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i++; |
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cnt--; |
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} |
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netif_addr_unlock_bh(dev); |
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if (cnt) |
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return -EOVERFLOW; |
|
|
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return i; |
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} |
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|
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void lbs_update_mcast(struct lbs_private *priv) |
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{ |
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struct cmd_ds_mac_multicast_adr mcast_cmd; |
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int dev_flags = 0; |
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int nr_addrs; |
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int old_mac_control = priv->mac_control; |
|
|
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if (netif_running(priv->dev)) |
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dev_flags |= priv->dev->flags; |
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if (priv->mesh_dev && netif_running(priv->mesh_dev)) |
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dev_flags |= priv->mesh_dev->flags; |
|
|
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if (dev_flags & IFF_PROMISC) { |
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priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE; |
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priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE | |
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CMD_ACT_MAC_MULTICAST_ENABLE); |
|
goto out_set_mac_control; |
|
} else if (dev_flags & IFF_ALLMULTI) { |
|
do_allmulti: |
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priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE; |
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priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE | |
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CMD_ACT_MAC_MULTICAST_ENABLE); |
|
goto out_set_mac_control; |
|
} |
|
|
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/* Once for priv->dev, again for priv->mesh_dev if it exists */ |
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nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0); |
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if (nr_addrs >= 0 && priv->mesh_dev) |
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nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs); |
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if (nr_addrs < 0) |
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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); |
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mcast_cmd.hdr.size = cpu_to_le16(size); |
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mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs); |
|
|
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lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size); |
|
|
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priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE; |
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} else |
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priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE; |
|
|
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priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE | |
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CMD_ACT_MAC_ALL_MULTICAST_ENABLE); |
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out_set_mac_control: |
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if (priv->mac_control != old_mac_control) |
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lbs_set_mac_control(priv); |
|
} |
|
|
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static void lbs_set_mcast_worker(struct work_struct *work) |
|
{ |
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struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work); |
|
lbs_update_mcast(priv); |
|
} |
|
|
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void lbs_set_multicast_list(struct net_device *dev) |
|
{ |
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struct lbs_private *priv = dev->ml_priv; |
|
|
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schedule_work(&priv->mcast_work); |
|
} |
|
|
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/** |
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* 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. |
|
* |
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* @data: A pointer to &lbs_thread structure |
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* returns: 0 |
|
*/ |
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static int lbs_thread(void *data) |
|
{ |
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struct net_device *dev = data; |
|
struct lbs_private *priv = dev->ml_priv; |
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wait_queue_entry_t wait; |
|
|
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init_waitqueue_entry(&wait, current); |
|
|
|
for (;;) { |
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int shouldsleep; |
|
u8 resp_idx; |
|
|
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lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n", |
|
priv->currenttxskb, priv->dnld_sent); |
|
|
|
add_wait_queue(&priv->waitq, &wait); |
|
set_current_state(TASK_INTERRUPTIBLE); |
|
spin_lock_irq(&priv->driver_lock); |
|
|
|
if (kthread_should_stop()) |
|
shouldsleep = 0; /* Bye */ |
|
else if (priv->surpriseremoved) |
|
shouldsleep = 1; /* We need to wait until we're _told_ to die */ |
|
else if (priv->psstate == PS_STATE_SLEEP) |
|
shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */ |
|
else if (priv->cmd_timed_out) |
|
shouldsleep = 0; /* Command timed out. Recover */ |
|
else if (!priv->fw_ready) |
|
shouldsleep = 1; /* Firmware not ready. We're waiting for it */ |
|
else if (priv->dnld_sent) |
|
shouldsleep = 1; /* Something is en route to the device already */ |
|
else if (priv->tx_pending_len > 0) |
|
shouldsleep = 0; /* We've a packet to send */ |
|
else if (priv->resp_len[priv->resp_idx]) |
|
shouldsleep = 0; /* We have a command response */ |
|
else if (priv->cur_cmd) |
|
shouldsleep = 1; /* Can't send a command; one already running */ |
|
else if (!list_empty(&priv->cmdpendingq) && |
|
!(priv->wakeup_dev_required)) |
|
shouldsleep = 0; /* We have a command to send */ |
|
else if (kfifo_len(&priv->event_fifo)) |
|
shouldsleep = 0; /* We have an event to process */ |
|
else |
|
shouldsleep = 1; /* No command */ |
|
|
|
if (shouldsleep) { |
|
lbs_deb_thread("sleeping, connect_status %d, " |
|
"psmode %d, psstate %d\n", |
|
priv->connect_status, |
|
priv->psmode, priv->psstate); |
|
spin_unlock_irq(&priv->driver_lock); |
|
schedule(); |
|
} else |
|
spin_unlock_irq(&priv->driver_lock); |
|
|
|
lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n", |
|
priv->currenttxskb, priv->dnld_sent); |
|
|
|
set_current_state(TASK_RUNNING); |
|
remove_wait_queue(&priv->waitq, &wait); |
|
|
|
lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n", |
|
priv->currenttxskb, priv->dnld_sent); |
|
|
|
if (kthread_should_stop()) { |
|
lbs_deb_thread("break from main thread\n"); |
|
break; |
|
} |
|
|
|
if (priv->surpriseremoved) { |
|
lbs_deb_thread("adapter removed; waiting to die...\n"); |
|
continue; |
|
} |
|
|
|
lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n", |
|
priv->currenttxskb, priv->dnld_sent); |
|
|
|
/* Process any pending command response */ |
|
spin_lock_irq(&priv->driver_lock); |
|
resp_idx = priv->resp_idx; |
|
if (priv->resp_len[resp_idx]) { |
|
spin_unlock_irq(&priv->driver_lock); |
|
lbs_process_command_response(priv, |
|
priv->resp_buf[resp_idx], |
|
priv->resp_len[resp_idx]); |
|
spin_lock_irq(&priv->driver_lock); |
|
priv->resp_len[resp_idx] = 0; |
|
} |
|
spin_unlock_irq(&priv->driver_lock); |
|
|
|
/* Process hardware events, e.g. card removed, link lost */ |
|
spin_lock_irq(&priv->driver_lock); |
|
while (kfifo_len(&priv->event_fifo)) { |
|
u32 event; |
|
|
|
if (kfifo_out(&priv->event_fifo, |
|
(unsigned char *) &event, sizeof(event)) != |
|
sizeof(event)) |
|
break; |
|
spin_unlock_irq(&priv->driver_lock); |
|
lbs_process_event(priv, event); |
|
spin_lock_irq(&priv->driver_lock); |
|
} |
|
spin_unlock_irq(&priv->driver_lock); |
|
|
|
if (priv->wakeup_dev_required) { |
|
lbs_deb_thread("Waking up device...\n"); |
|
/* Wake up device */ |
|
if (priv->exit_deep_sleep(priv)) |
|
lbs_deb_thread("Wakeup device failed\n"); |
|
continue; |
|
} |
|
|
|
/* command timeout stuff */ |
|
if (priv->cmd_timed_out && priv->cur_cmd) { |
|
struct cmd_ctrl_node *cmdnode = priv->cur_cmd; |
|
|
|
netdev_info(dev, "Timeout submitting command 0x%04x\n", |
|
le16_to_cpu(cmdnode->cmdbuf->command)); |
|
lbs_complete_command(priv, cmdnode, -ETIMEDOUT); |
|
|
|
/* Reset card, but only when it isn't in the process |
|
* of being shutdown anyway. */ |
|
if (!dev->dismantle && priv->reset_card) |
|
priv->reset_card(priv); |
|
} |
|
priv->cmd_timed_out = 0; |
|
|
|
if (!priv->fw_ready) |
|
continue; |
|
|
|
/* Check if we need to confirm Sleep Request received previously */ |
|
if (priv->psstate == PS_STATE_PRE_SLEEP && |
|
!priv->dnld_sent && !priv->cur_cmd) { |
|
if (priv->connect_status == LBS_CONNECTED) { |
|
lbs_deb_thread("pre-sleep, currenttxskb %p, " |
|
"dnld_sent %d, cur_cmd %p\n", |
|
priv->currenttxskb, priv->dnld_sent, |
|
priv->cur_cmd); |
|
|
|
lbs_ps_confirm_sleep(priv); |
|
} else { |
|
/* workaround for firmware sending |
|
* deauth/linkloss event immediately |
|
* after sleep request; remove this |
|
* after firmware fixes it |
|
*/ |
|
priv->psstate = PS_STATE_AWAKE; |
|
netdev_alert(dev, |
|
"ignore PS_SleepConfirm in non-connected state\n"); |
|
} |
|
} |
|
|
|
/* The PS state is changed during processing of Sleep Request |
|
* event above |
|
*/ |
|
if ((priv->psstate == PS_STATE_SLEEP) || |
|
(priv->psstate == PS_STATE_PRE_SLEEP)) |
|
continue; |
|
|
|
if (priv->is_deep_sleep) |
|
continue; |
|
|
|
/* Execute the next command */ |
|
if (!priv->dnld_sent && !priv->cur_cmd) |
|
lbs_execute_next_command(priv); |
|
|
|
spin_lock_irq(&priv->driver_lock); |
|
if (!priv->dnld_sent && priv->tx_pending_len > 0) { |
|
int ret = priv->hw_host_to_card(priv, MVMS_DAT, |
|
priv->tx_pending_buf, |
|
priv->tx_pending_len); |
|
if (ret) { |
|
lbs_deb_tx("host_to_card failed %d\n", ret); |
|
priv->dnld_sent = DNLD_RES_RECEIVED; |
|
} else { |
|
mod_timer(&priv->tx_lockup_timer, |
|
jiffies + (HZ * 5)); |
|
} |
|
priv->tx_pending_len = 0; |
|
if (!priv->currenttxskb) { |
|
/* We can wake the queues immediately if we aren't |
|
waiting for TX feedback */ |
|
if (priv->connect_status == LBS_CONNECTED) |
|
netif_wake_queue(priv->dev); |
|
if (priv->mesh_dev && |
|
netif_running(priv->mesh_dev)) |
|
netif_wake_queue(priv->mesh_dev); |
|
} |
|
} |
|
spin_unlock_irq(&priv->driver_lock); |
|
} |
|
|
|
del_timer(&priv->command_timer); |
|
del_timer(&priv->tx_lockup_timer); |
|
del_timer(&priv->auto_deepsleep_timer); |
|
|
|
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; |
|
|
|
/* Read MAC address from firmware */ |
|
eth_broadcast_addr(priv->current_addr); |
|
ret = lbs_update_hw_spec(priv); |
|
if (ret) |
|
goto done; |
|
|
|
/* Read power levels if available */ |
|
ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel); |
|
if (ret == 0) { |
|
priv->txpower_cur = curlevel; |
|
priv->txpower_min = minlevel; |
|
priv->txpower_max = maxlevel; |
|
} |
|
|
|
/* Send cmd to FW to enable 11D function */ |
|
ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_11D_ENABLE, 1); |
|
if (ret) |
|
goto done; |
|
|
|
ret = lbs_set_mac_control_sync(priv); |
|
done: |
|
return ret; |
|
} |
|
|
|
int lbs_suspend(struct lbs_private *priv) |
|
{ |
|
int ret; |
|
|
|
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); |
|
|
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(lbs_suspend); |
|
|
|
int lbs_resume(struct lbs_private *priv) |
|
{ |
|
int ret; |
|
|
|
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); |
|
|
|
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. |
|
* |
|
* @t: Context from which to retrieve a &struct lbs_private pointer |
|
*/ |
|
static void lbs_cmd_timeout_handler(struct timer_list *t) |
|
{ |
|
struct lbs_private *priv = from_timer(priv, t, command_timer); |
|
unsigned long flags; |
|
|
|
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_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. |
|
* |
|
* @t: Context from which to retrieve a &struct lbs_private pointer |
|
*/ |
|
static void lbs_tx_lockup_handler(struct timer_list *t) |
|
{ |
|
struct lbs_private *priv = from_timer(priv, t, tx_lockup_timer); |
|
unsigned long flags; |
|
|
|
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); |
|
} |
|
|
|
/** |
|
* auto_deepsleep_timer_fn - put the device back to deep sleep mode when |
|
* timer expires and no activity (command, event, data etc.) is detected. |
|
* @t: Context from which to retrieve a &struct lbs_private pointer |
|
* returns: N/A |
|
*/ |
|
static void auto_deepsleep_timer_fn(struct timer_list *t) |
|
{ |
|
struct lbs_private *priv = from_timer(priv, t, auto_deepsleep_timer); |
|
|
|
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); |
|
} |
|
|
|
int lbs_enter_auto_deep_sleep(struct lbs_private *priv) |
|
{ |
|
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); |
|
|
|
return 0; |
|
} |
|
|
|
int lbs_exit_auto_deep_sleep(struct lbs_private *priv) |
|
{ |
|
priv->is_auto_deep_sleep_enabled = 0; |
|
priv->auto_deep_sleep_timeout = 0; |
|
del_timer(&priv->auto_deepsleep_timer); |
|
|
|
return 0; |
|
} |
|
|
|
static int lbs_init_adapter(struct lbs_private *priv) |
|
{ |
|
int ret; |
|
|
|
eth_broadcast_addr(priv->current_addr); |
|
|
|
priv->connect_status = LBS_DISCONNECTED; |
|
priv->channel = DEFAULT_AD_HOC_CHANNEL; |
|
priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON; |
|
priv->radio_on = 1; |
|
priv->psmode = LBS802_11POWERMODECAM; |
|
priv->psstate = PS_STATE_FULL_POWER; |
|
priv->is_deep_sleep = 0; |
|
priv->is_auto_deep_sleep_enabled = 0; |
|
priv->deep_sleep_required = 0; |
|
priv->wakeup_dev_required = 0; |
|
init_waitqueue_head(&priv->ds_awake_q); |
|
init_waitqueue_head(&priv->scan_q); |
|
priv->authtype_auto = 1; |
|
priv->is_host_sleep_configured = 0; |
|
priv->is_host_sleep_activated = 0; |
|
init_waitqueue_head(&priv->host_sleep_q); |
|
init_waitqueue_head(&priv->fw_waitq); |
|
mutex_init(&priv->lock); |
|
|
|
timer_setup(&priv->command_timer, lbs_cmd_timeout_handler, 0); |
|
timer_setup(&priv->tx_lockup_timer, lbs_tx_lockup_handler, 0); |
|
timer_setup(&priv->auto_deepsleep_timer, auto_deepsleep_timer_fn, 0); |
|
|
|
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: |
|
return ret; |
|
} |
|
|
|
static void lbs_free_adapter(struct lbs_private *priv) |
|
{ |
|
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); |
|
} |
|
|
|
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_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; |
|
int err; |
|
|
|
/* Allocate an Ethernet device and register it */ |
|
wdev = lbs_cfg_alloc(dmdev); |
|
if (IS_ERR(wdev)) { |
|
err = PTR_ERR(wdev); |
|
pr_err("cfg80211 init failed\n"); |
|
goto err_cfg; |
|
} |
|
|
|
wdev->iftype = NL80211_IFTYPE_STATION; |
|
priv = wdev_priv(wdev); |
|
priv->wdev = wdev; |
|
|
|
err = lbs_init_adapter(priv); |
|
if (err) { |
|
pr_err("failed to initialize adapter structure\n"); |
|
goto err_wdev; |
|
} |
|
|
|
dev = alloc_netdev(0, "wlan%d", NET_NAME_UNKNOWN, ether_setup); |
|
if (!dev) { |
|
err = -ENOMEM; |
|
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)) { |
|
err = PTR_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; |
|
|
|
return priv; |
|
|
|
err_ndev: |
|
free_netdev(dev); |
|
|
|
err_adapter: |
|
lbs_free_adapter(priv); |
|
|
|
err_wdev: |
|
lbs_cfg_free(priv); |
|
|
|
err_cfg: |
|
return ERR_PTR(err); |
|
} |
|
EXPORT_SYMBOL_GPL(lbs_add_card); |
|
|
|
|
|
void lbs_remove_card(struct lbs_private *priv) |
|
{ |
|
struct net_device *dev = priv->dev; |
|
|
|
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; |
|
/* no need to wakeup if already woken up, |
|
* on suspend, this exit ps command is not processed |
|
* the driver hangs |
|
*/ |
|
if (priv->psstate != PS_STATE_FULL_POWER) |
|
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); |
|
} |
|
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; |
|
|
|
/* 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); |
|
|
|
ret = lbs_cfg_register(priv); |
|
if (ret) { |
|
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: |
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(lbs_start_card); |
|
|
|
|
|
void lbs_stop_card(struct lbs_private *priv) |
|
{ |
|
struct net_device *dev; |
|
|
|
if (!priv) |
|
return; |
|
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) |
|
return; |
|
|
|
netif_stop_queue(dev); |
|
netif_carrier_off(dev); |
|
|
|
lbs_debugfs_remove_one(priv); |
|
lbs_deinit_mesh(priv); |
|
unregister_netdev(dev); |
|
} |
|
EXPORT_SYMBOL_GPL(lbs_stop_card); |
|
|
|
|
|
void lbs_queue_event(struct lbs_private *priv, u32 event) |
|
{ |
|
unsigned long flags; |
|
|
|
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); |
|
} |
|
EXPORT_SYMBOL_GPL(lbs_queue_event); |
|
|
|
void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx) |
|
{ |
|
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); |
|
} |
|
EXPORT_SYMBOL_GPL(lbs_notify_command_response); |
|
|
|
static int __init lbs_init_module(void) |
|
{ |
|
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(); |
|
|
|
return 0; |
|
} |
|
|
|
static void __exit lbs_exit_module(void) |
|
{ |
|
lbs_debugfs_remove(); |
|
} |
|
|
|
module_init(lbs_init_module); |
|
module_exit(lbs_exit_module); |
|
|
|
MODULE_DESCRIPTION("Libertas WLAN Driver Library"); |
|
MODULE_AUTHOR("Marvell International Ltd."); |
|
MODULE_LICENSE("GPL");
|
|
|