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tegrakernel/kernel/kernel-4.9/drivers/net/wireless/marvell/libertas/main.c

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initial commit tegra kernel 32.6.1
2022-02-16 09:13:02 -06:00
/*
* This file contains the major functions in WLAN
* driver. It includes init, exit, open, close and main
* thread etc..
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/etherdevice.h>
#include <linux/hardirq.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/kthread.h>
#include <linux/kfifo.h>
#include <linux/slab.h>
#include <net/cfg80211.h>
#include "host.h"
#include "decl.h"
#include "dev.h"
#include "cfg.h"
#include "debugfs.h"
#include "cmd.h"
#include "mesh.h"
#define DRIVER_RELEASE_VERSION "323.p0"
const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
#ifdef DEBUG
"-dbg"
#endif
"";
/* Module parameters */
unsigned int lbs_debug;
EXPORT_SYMBOL_GPL(lbs_debug);
module_param_named(libertas_debug, lbs_debug, int, 0644);
unsigned int lbs_disablemesh;
EXPORT_SYMBOL_GPL(lbs_disablemesh);
module_param_named(libertas_disablemesh, lbs_disablemesh, int, 0644);
/*
* This global structure is used to send the confirm_sleep command as
* fast as possible down to the firmware.
*/
struct cmd_confirm_sleep confirm_sleep;
/*
* the table to keep region code
*/
u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
{ 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
/*
* FW rate table. FW refers to rates by their index in this table, not by the
* rate value itself. Values of 0x00 are
* reserved positions.
*/
static u8 fw_data_rates[MAX_RATES] =
{ 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
};
/**
* lbs_fw_index_to_data_rate - use index to get the data rate
*
* @idx: The index of data rate
* returns: data rate or 0
*/
u32 lbs_fw_index_to_data_rate(u8 idx)
{
if (idx >= sizeof(fw_data_rates))
idx = 0;
return fw_data_rates[idx];
}
/**
* lbs_data_rate_to_fw_index - use rate to get the index
*
* @rate: data rate
* returns: index or 0
*/
u8 lbs_data_rate_to_fw_index(u32 rate)
{
u8 i;
if (!rate)
return 0;
for (i = 0; i < sizeof(fw_data_rates); i++) {
if (rate == fw_data_rates[i])
return i;
}
return 0;
}
int lbs_set_iface_type(struct lbs_private *priv, enum nl80211_iftype type)
{
int ret = 0;
switch (type) {
case NL80211_IFTYPE_MONITOR:
ret = lbs_set_monitor_mode(priv, 1);
break;
case NL80211_IFTYPE_STATION:
if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
ret = lbs_set_monitor_mode(priv, 0);
if (!ret)
ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
break;
case NL80211_IFTYPE_ADHOC:
if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
ret = lbs_set_monitor_mode(priv, 0);
if (!ret)
ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
break;
default:
ret = -ENOTSUPP;
}
return ret;
}
int lbs_start_iface(struct lbs_private *priv)
{
struct cmd_ds_802_11_mac_address cmd;
int ret;
if (priv->power_restore) {
ret = priv->power_restore(priv);
if (ret)
return ret;
}
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
memcpy(cmd.macadd, priv->current_addr, ETH_ALEN);
ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
if (ret) {
lbs_deb_net("set MAC address failed\n");
goto err;
}
ret = lbs_set_iface_type(priv, priv->wdev->iftype);
if (ret) {
lbs_deb_net("set iface type failed\n");
goto err;
}
ret = lbs_set_11d_domain_info(priv);
if (ret) {
lbs_deb_net("set 11d domain info failed\n");
goto err;
}
lbs_update_channel(priv);
priv->iface_running = true;
return 0;
err:
if (priv->power_save)
priv->power_save(priv);
return ret;
}
/**
* lbs_dev_open - open the ethX interface
*
* @dev: A pointer to &net_device structure
* returns: 0 or -EBUSY if monitor mode active
*/
static int lbs_dev_open(struct net_device *dev)
{
struct lbs_private *priv = dev->ml_priv;
int ret = 0;
lbs_deb_enter(LBS_DEB_NET);
if (!priv->iface_running) {
ret = lbs_start_iface(priv);
if (ret)
goto out;
}
spin_lock_irq(&priv->driver_lock);
netif_carrier_off(dev);
if (!priv->tx_pending_len)
netif_wake_queue(dev);
spin_unlock_irq(&priv->driver_lock);
out:
lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
return ret;
}
static bool lbs_command_queue_empty(struct lbs_private *priv)
{
unsigned long flags;
bool ret;
spin_lock_irqsave(&priv->driver_lock, flags);
ret = priv->cur_cmd == NULL && list_empty(&priv->cmdpendingq);
spin_unlock_irqrestore(&priv->driver_lock, flags);
return ret;
}
int lbs_stop_iface(struct lbs_private *priv)
{
unsigned long flags;
int ret = 0;
lbs_deb_enter(LBS_DEB_MAIN);
spin_lock_irqsave(&priv->driver_lock, flags);
priv->iface_running = false;
kfree_skb(priv->currenttxskb);
priv->currenttxskb = NULL;
priv->tx_pending_len = 0;
spin_unlock_irqrestore(&priv->driver_lock, flags);
cancel_work_sync(&priv->mcast_work);
del_timer_sync(&priv->tx_lockup_timer);
/* Disable command processing, and wait for all commands to complete */
lbs_deb_main("waiting for commands to complete\n");
wait_event(priv->waitq, lbs_command_queue_empty(priv));
lbs_deb_main("all commands completed\n");
if (priv->power_save)
ret = priv->power_save(priv);
lbs_deb_leave(LBS_DEB_MAIN);
return ret;
}
/**
* lbs_eth_stop - close the ethX interface
*
* @dev: A pointer to &net_device structure
* returns: 0
*/
static int lbs_eth_stop(struct net_device *dev)
{
struct lbs_private *priv = dev->ml_priv;
lbs_deb_enter(LBS_DEB_NET);
if (priv->connect_status == LBS_CONNECTED)
lbs_disconnect(priv, WLAN_REASON_DEAUTH_LEAVING);
spin_lock_irq(&priv->driver_lock);
netif_stop_queue(dev);
spin_unlock_irq(&priv->driver_lock);
lbs_update_mcast(priv);
cancel_delayed_work_sync(&priv->scan_work);
if (priv->scan_req)
lbs_scan_done(priv);
netif_carrier_off(priv->dev);
if (!lbs_iface_active(priv))
lbs_stop_iface(priv);
lbs_deb_leave(LBS_DEB_NET);
return 0;
}
void lbs_host_to_card_done(struct lbs_private *priv)
{
unsigned long flags;
lbs_deb_enter(LBS_DEB_THREAD);
spin_lock_irqsave(&priv->driver_lock, flags);
del_timer(&priv->tx_lockup_timer);
priv->dnld_sent = DNLD_RES_RECEIVED;
/* Wake main thread if commands are pending */
if (!priv->cur_cmd || priv->tx_pending_len > 0) {
if (!priv->wakeup_dev_required)
wake_up(&priv->waitq);
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
lbs_deb_leave(LBS_DEB_THREAD);
}
EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
int lbs_set_mac_address(struct net_device *dev, void *addr)
{
int ret = 0;
struct lbs_private *priv = dev->ml_priv;
struct sockaddr *phwaddr = addr;
lbs_deb_enter(LBS_DEB_NET);
/*
* Can only set MAC address when all interfaces are down, to be written
* to the hardware when one of them is brought up.
*/
if (lbs_iface_active(priv))
return -EBUSY;
/* In case it was called from the mesh device */
dev = priv->dev;
memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
if (priv->mesh_dev)
memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
return ret;
}
static inline int mac_in_list(unsigned char *list, int list_len,
unsigned char *mac)
{
while (list_len) {
if (!memcmp(list, mac, ETH_ALEN))
return 1;
list += ETH_ALEN;
list_len--;
}
return 0;
}
static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
struct net_device *dev, int nr_addrs)
{
int i = nr_addrs;
struct netdev_hw_addr *ha;
int cnt;
if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
return nr_addrs;
netif_addr_lock_bh(dev);
cnt = netdev_mc_count(dev);
netdev_for_each_mc_addr(ha, dev) {
if (mac_in_list(cmd->maclist, nr_addrs, ha->addr)) {
lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
ha->addr);
cnt--;
continue;
}
if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
break;
memcpy(&cmd->maclist[6*i], ha->addr, ETH_ALEN);
lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
ha->addr);
i++;
cnt--;
}
netif_addr_unlock_bh(dev);
if (cnt)
return -EOVERFLOW;
return i;
}
void lbs_update_mcast(struct lbs_private *priv)
{
struct cmd_ds_mac_multicast_adr mcast_cmd;
int dev_flags = 0;
int nr_addrs;
int old_mac_control = priv->mac_control;
lbs_deb_enter(LBS_DEB_NET);
if (netif_running(priv->dev))
dev_flags |= priv->dev->flags;
if (priv->mesh_dev && netif_running(priv->mesh_dev))
dev_flags |= priv->mesh_dev->flags;
if (dev_flags & IFF_PROMISC) {
priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
CMD_ACT_MAC_MULTICAST_ENABLE);
goto out_set_mac_control;
} else if (dev_flags & IFF_ALLMULTI) {
do_allmulti:
priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
CMD_ACT_MAC_MULTICAST_ENABLE);
goto out_set_mac_control;
}
/* Once for priv->dev, again for priv->mesh_dev if it exists */
nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
if (nr_addrs >= 0 && priv->mesh_dev)
nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
if (nr_addrs < 0)
goto do_allmulti;
if (nr_addrs) {
int size = offsetof(struct cmd_ds_mac_multicast_adr,
maclist[6*nr_addrs]);
mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
mcast_cmd.hdr.size = cpu_to_le16(size);
mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
} else
priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
out_set_mac_control:
if (priv->mac_control != old_mac_control)
lbs_set_mac_control(priv);
lbs_deb_leave(LBS_DEB_NET);
}
static void lbs_set_mcast_worker(struct work_struct *work)
{
struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
lbs_update_mcast(priv);
}
void lbs_set_multicast_list(struct net_device *dev)
{
struct lbs_private *priv = dev->ml_priv;
schedule_work(&priv->mcast_work);
}
/**
* lbs_thread - handles the major jobs in the LBS driver.
* It handles all events generated by firmware, RX data received
* from firmware and TX data sent from kernel.
*
* @data: A pointer to &lbs_thread structure
* returns: 0
*/
static int lbs_thread(void *data)
{
struct net_device *dev = data;
struct lbs_private *priv = dev->ml_priv;
wait_queue_t wait;
lbs_deb_enter(LBS_DEB_THREAD);
init_waitqueue_entry(&wait, current);
for (;;) {
int shouldsleep;
u8 resp_idx;
lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
priv->currenttxskb, priv->dnld_sent);
add_wait_queue(&priv->waitq, &wait);
set_current_state(TASK_INTERRUPTIBLE);
spin_lock_irq(&priv->driver_lock);
if (kthread_should_stop())
shouldsleep = 0; /* Bye */
else if (priv->surpriseremoved)
shouldsleep = 1; /* We need to wait until we're _told_ to die */
else if (priv->psstate == PS_STATE_SLEEP)
shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
else if (priv->cmd_timed_out)
shouldsleep = 0; /* Command timed out. Recover */
else if (!priv->fw_ready)
shouldsleep = 1; /* Firmware not ready. We're waiting for it */
else if (priv->dnld_sent)
shouldsleep = 1; /* Something is en route to the device already */
else if (priv->tx_pending_len > 0)
shouldsleep = 0; /* We've a packet to send */
else if (priv->resp_len[priv->resp_idx])
shouldsleep = 0; /* We have a command response */
else if (priv->cur_cmd)
shouldsleep = 1; /* Can't send a command; one already running */
else if (!list_empty(&priv->cmdpendingq) &&
!(priv->wakeup_dev_required))
shouldsleep = 0; /* We have a command to send */
else if (kfifo_len(&priv->event_fifo))
shouldsleep = 0; /* We have an event to process */
else
shouldsleep = 1; /* No command */
if (shouldsleep) {
lbs_deb_thread("sleeping, connect_status %d, "
"psmode %d, psstate %d\n",
priv->connect_status,
priv->psmode, priv->psstate);
spin_unlock_irq(&priv->driver_lock);
schedule();
} else
spin_unlock_irq(&priv->driver_lock);
lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
priv->currenttxskb, priv->dnld_sent);
set_current_state(TASK_RUNNING);
remove_wait_queue(&priv->waitq, &wait);
lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
priv->currenttxskb, priv->dnld_sent);
if (kthread_should_stop()) {
lbs_deb_thread("break from main thread\n");
break;
}
if (priv->surpriseremoved) {
lbs_deb_thread("adapter removed; waiting to die...\n");
continue;
}
lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
priv->currenttxskb, priv->dnld_sent);
/* Process any pending command response */
spin_lock_irq(&priv->driver_lock);
resp_idx = priv->resp_idx;
if (priv->resp_len[resp_idx]) {
spin_unlock_irq(&priv->driver_lock);
lbs_process_command_response(priv,
priv->resp_buf[resp_idx],
priv->resp_len[resp_idx]);
spin_lock_irq(&priv->driver_lock);
priv->resp_len[resp_idx] = 0;
}
spin_unlock_irq(&priv->driver_lock);
/* Process hardware events, e.g. card removed, link lost */
spin_lock_irq(&priv->driver_lock);
while (kfifo_len(&priv->event_fifo)) {
u32 event;
if (kfifo_out(&priv->event_fifo,
(unsigned char *) &event, sizeof(event)) !=
sizeof(event))
break;
spin_unlock_irq(&priv->driver_lock);
lbs_process_event(priv, event);
spin_lock_irq(&priv->driver_lock);
}
spin_unlock_irq(&priv->driver_lock);
if (priv->wakeup_dev_required) {
lbs_deb_thread("Waking up device...\n");
/* Wake up device */
if (priv->exit_deep_sleep(priv))
lbs_deb_thread("Wakeup device failed\n");
continue;
}
/* command timeout stuff */
if (priv->cmd_timed_out && priv->cur_cmd) {
struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
netdev_info(dev, "Timeout submitting command 0x%04x\n",
le16_to_cpu(cmdnode->cmdbuf->command));
lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
/* Reset card, but only when it isn't in the process
* of being shutdown anyway. */
if (!dev->dismantle && priv->reset_card)
priv->reset_card(priv);
}
priv->cmd_timed_out = 0;
if (!priv->fw_ready)
continue;
/* Check if we need to confirm Sleep Request received previously */
if (priv->psstate == PS_STATE_PRE_SLEEP &&
!priv->dnld_sent && !priv->cur_cmd) {
if (priv->connect_status == LBS_CONNECTED) {
lbs_deb_thread("pre-sleep, currenttxskb %p, "
"dnld_sent %d, cur_cmd %p\n",
priv->currenttxskb, priv->dnld_sent,
priv->cur_cmd);
lbs_ps_confirm_sleep(priv);
} else {
/* workaround for firmware sending
* deauth/linkloss event immediately
* after sleep request; remove this
* after firmware fixes it
*/
priv->psstate = PS_STATE_AWAKE;
netdev_alert(dev,
"ignore PS_SleepConfirm in non-connected state\n");
}
}
/* The PS state is changed during processing of Sleep Request
* event above
*/
if ((priv->psstate == PS_STATE_SLEEP) ||
(priv->psstate == PS_STATE_PRE_SLEEP))
continue;
if (priv->is_deep_sleep)
continue;
/* Execute the next command */
if (!priv->dnld_sent && !priv->cur_cmd)
lbs_execute_next_command(priv);
spin_lock_irq(&priv->driver_lock);
if (!priv->dnld_sent && priv->tx_pending_len > 0) {
int ret = priv->hw_host_to_card(priv, MVMS_DAT,
priv->tx_pending_buf,
priv->tx_pending_len);
if (ret) {
lbs_deb_tx("host_to_card failed %d\n", ret);
priv->dnld_sent = DNLD_RES_RECEIVED;
} else {
mod_timer(&priv->tx_lockup_timer,
jiffies + (HZ * 5));
}
priv->tx_pending_len = 0;
if (!priv->currenttxskb) {
/* We can wake the queues immediately if we aren't
waiting for TX feedback */
if (priv->connect_status == LBS_CONNECTED)
netif_wake_queue(priv->dev);
if (priv->mesh_dev &&
netif_running(priv->mesh_dev))
netif_wake_queue(priv->mesh_dev);
}
}
spin_unlock_irq(&priv->driver_lock);
}
del_timer(&priv->command_timer);
del_timer(&priv->tx_lockup_timer);
del_timer(&priv->auto_deepsleep_timer);
lbs_deb_leave(LBS_DEB_THREAD);
return 0;
}
/**
* lbs_setup_firmware - gets the HW spec from the firmware and sets
* some basic parameters
*
* @priv: A pointer to &struct lbs_private structure
* returns: 0 or -1
*/
static int lbs_setup_firmware(struct lbs_private *priv)
{
int ret = -1;
s16 curlevel = 0, minlevel = 0, maxlevel = 0;
lbs_deb_enter(LBS_DEB_FW);
/* Read MAC address from firmware */
eth_broadcast_addr(priv->current_addr);
ret = lbs_update_hw_spec(priv);
if (ret)
goto done;
/* Read power levels if available */
ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
if (ret == 0) {
priv->txpower_cur = curlevel;
priv->txpower_min = minlevel;
priv->txpower_max = maxlevel;
}
/* Send cmd to FW to enable 11D function */
ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_11D_ENABLE, 1);
if (ret)
goto done;
ret = lbs_set_mac_control_sync(priv);
done:
lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
return ret;
}
int lbs_suspend(struct lbs_private *priv)
{
int ret;
lbs_deb_enter(LBS_DEB_FW);
if (priv->is_deep_sleep) {
ret = lbs_set_deep_sleep(priv, 0);
if (ret) {
netdev_err(priv->dev,
"deep sleep cancellation failed: %d\n", ret);
return ret;
}
priv->deep_sleep_required = 1;
}
ret = lbs_set_host_sleep(priv, 1);
netif_device_detach(priv->dev);
if (priv->mesh_dev)
netif_device_detach(priv->mesh_dev);
lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(lbs_suspend);
int lbs_resume(struct lbs_private *priv)
{
int ret;
lbs_deb_enter(LBS_DEB_FW);
ret = lbs_set_host_sleep(priv, 0);
netif_device_attach(priv->dev);
if (priv->mesh_dev)
netif_device_attach(priv->mesh_dev);
if (priv->deep_sleep_required) {
priv->deep_sleep_required = 0;
ret = lbs_set_deep_sleep(priv, 1);
if (ret)
netdev_err(priv->dev,
"deep sleep activation failed: %d\n", ret);
}
if (priv->setup_fw_on_resume)
ret = lbs_setup_firmware(priv);
lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(lbs_resume);
/**
* lbs_cmd_timeout_handler - handles the timeout of command sending.
* It will re-send the same command again.
*
* @data: &struct lbs_private pointer
*/
static void lbs_cmd_timeout_handler(unsigned long data)
{
struct lbs_private *priv = (struct lbs_private *)data;
unsigned long flags;
lbs_deb_enter(LBS_DEB_CMD);
spin_lock_irqsave(&priv->driver_lock, flags);
if (!priv->cur_cmd)
goto out;
netdev_info(priv->dev, "command 0x%04x timed out\n",
le16_to_cpu(priv->cur_cmd->cmdbuf->command));
priv->cmd_timed_out = 1;
/*
* If the device didn't even acknowledge the command, reset the state
* so that we don't block all future commands due to this one timeout.
*/
if (priv->dnld_sent == DNLD_CMD_SENT)
priv->dnld_sent = DNLD_RES_RECEIVED;
wake_up(&priv->waitq);
out:
spin_unlock_irqrestore(&priv->driver_lock, flags);
lbs_deb_leave(LBS_DEB_CMD);
}
/**
* lbs_tx_lockup_handler - handles the timeout of the passing of TX frames
* to the hardware. This is known to frequently happen with SD8686 when
* waking up after a Wake-on-WLAN-triggered resume.
*
* @data: &struct lbs_private pointer
*/
static void lbs_tx_lockup_handler(unsigned long data)
{
struct lbs_private *priv = (struct lbs_private *)data;
unsigned long flags;
lbs_deb_enter(LBS_DEB_TX);
spin_lock_irqsave(&priv->driver_lock, flags);
netdev_info(priv->dev, "TX lockup detected\n");
if (priv->reset_card)
priv->reset_card(priv);
priv->dnld_sent = DNLD_RES_RECEIVED;
wake_up_interruptible(&priv->waitq);
spin_unlock_irqrestore(&priv->driver_lock, flags);
lbs_deb_leave(LBS_DEB_TX);
}
/**
* auto_deepsleep_timer_fn - put the device back to deep sleep mode when
* timer expires and no activity (command, event, data etc.) is detected.
* @data: &struct lbs_private pointer
* returns: N/A
*/
static void auto_deepsleep_timer_fn(unsigned long data)
{
struct lbs_private *priv = (struct lbs_private *)data;
lbs_deb_enter(LBS_DEB_CMD);
if (priv->is_activity_detected) {
priv->is_activity_detected = 0;
} else {
if (priv->is_auto_deep_sleep_enabled &&
(!priv->wakeup_dev_required) &&
(priv->connect_status != LBS_CONNECTED)) {
struct cmd_header cmd;
lbs_deb_main("Entering auto deep sleep mode...\n");
memset(&cmd, 0, sizeof(cmd));
cmd.size = cpu_to_le16(sizeof(cmd));
lbs_cmd_async(priv, CMD_802_11_DEEP_SLEEP, &cmd,
sizeof(cmd));
}
}
mod_timer(&priv->auto_deepsleep_timer , jiffies +
(priv->auto_deep_sleep_timeout * HZ)/1000);
lbs_deb_leave(LBS_DEB_CMD);
}
int lbs_enter_auto_deep_sleep(struct lbs_private *priv)
{
lbs_deb_enter(LBS_DEB_SDIO);
priv->is_auto_deep_sleep_enabled = 1;
if (priv->is_deep_sleep)
priv->wakeup_dev_required = 1;
mod_timer(&priv->auto_deepsleep_timer ,
jiffies + (priv->auto_deep_sleep_timeout * HZ)/1000);
lbs_deb_leave(LBS_DEB_SDIO);
return 0;
}
int lbs_exit_auto_deep_sleep(struct lbs_private *priv)
{
lbs_deb_enter(LBS_DEB_SDIO);
priv->is_auto_deep_sleep_enabled = 0;
priv->auto_deep_sleep_timeout = 0;
del_timer(&priv->auto_deepsleep_timer);
lbs_deb_leave(LBS_DEB_SDIO);
return 0;
}
static int lbs_init_adapter(struct lbs_private *priv)
{
int ret;
lbs_deb_enter(LBS_DEB_MAIN);
eth_broadcast_addr(priv->current_addr);
priv->connect_status = LBS_DISCONNECTED;
priv->channel = DEFAULT_AD_HOC_CHANNEL;
priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
priv->radio_on = 1;
priv->psmode = LBS802_11POWERMODECAM;
priv->psstate = PS_STATE_FULL_POWER;
priv->is_deep_sleep = 0;
priv->is_auto_deep_sleep_enabled = 0;
priv->deep_sleep_required = 0;
priv->wakeup_dev_required = 0;
init_waitqueue_head(&priv->ds_awake_q);
init_waitqueue_head(&priv->scan_q);
priv->authtype_auto = 1;
priv->is_host_sleep_configured = 0;
priv->is_host_sleep_activated = 0;
init_waitqueue_head(&priv->host_sleep_q);
init_waitqueue_head(&priv->fw_waitq);
mutex_init(&priv->lock);
setup_timer(&priv->command_timer, lbs_cmd_timeout_handler,
(unsigned long)priv);
setup_timer(&priv->tx_lockup_timer, lbs_tx_lockup_handler,
(unsigned long)priv);
setup_timer(&priv->auto_deepsleep_timer, auto_deepsleep_timer_fn,
(unsigned long)priv);
INIT_LIST_HEAD(&priv->cmdfreeq);
INIT_LIST_HEAD(&priv->cmdpendingq);
spin_lock_init(&priv->driver_lock);
/* Allocate the command buffers */
if (lbs_allocate_cmd_buffer(priv)) {
pr_err("Out of memory allocating command buffers\n");
ret = -ENOMEM;
goto out;
}
priv->resp_idx = 0;
priv->resp_len[0] = priv->resp_len[1] = 0;
/* Create the event FIFO */
ret = kfifo_alloc(&priv->event_fifo, sizeof(u32) * 16, GFP_KERNEL);
if (ret) {
pr_err("Out of memory allocating event FIFO buffer\n");
goto out;
}
out:
lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
return ret;
}
static void lbs_free_adapter(struct lbs_private *priv)
{
lbs_deb_enter(LBS_DEB_MAIN);
lbs_free_cmd_buffer(priv);
kfifo_free(&priv->event_fifo);
del_timer(&priv->command_timer);
del_timer(&priv->tx_lockup_timer);
del_timer(&priv->auto_deepsleep_timer);
lbs_deb_leave(LBS_DEB_MAIN);
}
static const struct net_device_ops lbs_netdev_ops = {
.ndo_open = lbs_dev_open,
.ndo_stop = lbs_eth_stop,
.ndo_start_xmit = lbs_hard_start_xmit,
.ndo_set_mac_address = lbs_set_mac_address,
.ndo_set_rx_mode = lbs_set_multicast_list,
.ndo_change_mtu = eth_change_mtu,
.ndo_validate_addr = eth_validate_addr,
};
/**
* lbs_add_card - adds the card. It will probe the
* card, allocate the lbs_priv and initialize the device.
*
* @card: A pointer to card
* @dmdev: A pointer to &struct device
* returns: A pointer to &struct lbs_private structure
*/
struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
{
struct net_device *dev;
struct wireless_dev *wdev;
struct lbs_private *priv = NULL;
lbs_deb_enter(LBS_DEB_MAIN);
/* Allocate an Ethernet device and register it */
wdev = lbs_cfg_alloc(dmdev);
if (IS_ERR(wdev)) {
pr_err("cfg80211 init failed\n");
goto done;
}
wdev->iftype = NL80211_IFTYPE_STATION;
priv = wdev_priv(wdev);
priv->wdev = wdev;
if (lbs_init_adapter(priv)) {
pr_err("failed to initialize adapter structure\n");
goto err_wdev;
}
dev = alloc_netdev(0, "wlan%d", NET_NAME_UNKNOWN, ether_setup);
if (!dev) {
dev_err(dmdev, "no memory for network device instance\n");
goto err_adapter;
}
dev->ieee80211_ptr = wdev;
dev->ml_priv = priv;
SET_NETDEV_DEV(dev, dmdev);
wdev->netdev = dev;
priv->dev = dev;
dev->netdev_ops = &lbs_netdev_ops;
dev->watchdog_timeo = 5 * HZ;
dev->ethtool_ops = &lbs_ethtool_ops;
dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
priv->card = card;
strcpy(dev->name, "wlan%d");
lbs_deb_thread("Starting main thread...\n");
init_waitqueue_head(&priv->waitq);
priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
if (IS_ERR(priv->main_thread)) {
lbs_deb_thread("Error creating main thread.\n");
goto err_ndev;
}
priv->work_thread = create_singlethread_workqueue("lbs_worker");
INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
priv->wol_criteria = EHS_REMOVE_WAKEUP;
priv->wol_gpio = 0xff;
priv->wol_gap = 20;
priv->ehs_remove_supported = true;
goto done;
err_ndev:
free_netdev(dev);
err_adapter:
lbs_free_adapter(priv);
err_wdev:
lbs_cfg_free(priv);
priv = NULL;
done:
lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
return priv;
}
EXPORT_SYMBOL_GPL(lbs_add_card);
void lbs_remove_card(struct lbs_private *priv)
{
struct net_device *dev = priv->dev;
lbs_deb_enter(LBS_DEB_MAIN);
lbs_remove_mesh(priv);
if (priv->wiphy_registered)
lbs_scan_deinit(priv);
lbs_wait_for_firmware_load(priv);
/* worker thread destruction blocks on the in-flight command which
* should have been cleared already in lbs_stop_card().
*/
lbs_deb_main("destroying worker thread\n");
destroy_workqueue(priv->work_thread);
lbs_deb_main("done destroying worker thread\n");
if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
priv->psmode = LBS802_11POWERMODECAM;
/* 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);
lbs_deb_leave(LBS_DEB_MAIN);
}
EXPORT_SYMBOL_GPL(lbs_remove_card);
int lbs_rtap_supported(struct lbs_private *priv)
{
if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5)
return 1;
/* newer firmware use a capability mask */
return ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
(priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK));
}
int lbs_start_card(struct lbs_private *priv)
{
struct net_device *dev = priv->dev;
int ret = -1;
lbs_deb_enter(LBS_DEB_MAIN);
/* poke the firmware */
ret = lbs_setup_firmware(priv);
if (ret)
goto done;
if (!lbs_disablemesh)
lbs_init_mesh(priv);
else
pr_info("%s: mesh disabled\n", dev->name);
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:
lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(lbs_start_card);
void lbs_stop_card(struct lbs_private *priv)
{
struct net_device *dev;
lbs_deb_enter(LBS_DEB_MAIN);
if (!priv)
goto out;
dev = priv->dev;
/* If the netdev isn't registered, it means that lbs_start_card() was
* never called so we have nothing to do here. */
if (dev->reg_state != NETREG_REGISTERED)
goto out;
netif_stop_queue(dev);
netif_carrier_off(dev);
lbs_debugfs_remove_one(priv);
lbs_deinit_mesh(priv);
unregister_netdev(dev);
out:
lbs_deb_leave(LBS_DEB_MAIN);
}
EXPORT_SYMBOL_GPL(lbs_stop_card);
void lbs_queue_event(struct lbs_private *priv, u32 event)
{
unsigned long flags;
lbs_deb_enter(LBS_DEB_THREAD);
spin_lock_irqsave(&priv->driver_lock, flags);
if (priv->psstate == PS_STATE_SLEEP)
priv->psstate = PS_STATE_AWAKE;
kfifo_in(&priv->event_fifo, (unsigned char *) &event, sizeof(u32));
wake_up(&priv->waitq);
spin_unlock_irqrestore(&priv->driver_lock, flags);
lbs_deb_leave(LBS_DEB_THREAD);
}
EXPORT_SYMBOL_GPL(lbs_queue_event);
void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
{
lbs_deb_enter(LBS_DEB_THREAD);
if (priv->psstate == PS_STATE_SLEEP)
priv->psstate = PS_STATE_AWAKE;
/* Swap buffers by flipping the response index */
BUG_ON(resp_idx > 1);
priv->resp_idx = resp_idx;
wake_up(&priv->waitq);
lbs_deb_leave(LBS_DEB_THREAD);
}
EXPORT_SYMBOL_GPL(lbs_notify_command_response);
static int __init lbs_init_module(void)
{
lbs_deb_enter(LBS_DEB_MAIN);
memset(&confirm_sleep, 0, sizeof(confirm_sleep));
confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
confirm_sleep.action = cpu_to_le16(PS_MODE_ACTION_SLEEP_CONFIRMED);
lbs_debugfs_init();
lbs_deb_leave(LBS_DEB_MAIN);
return 0;
}
static void __exit lbs_exit_module(void)
{
lbs_deb_enter(LBS_DEB_MAIN);
lbs_debugfs_remove();
lbs_deb_leave(LBS_DEB_MAIN);
}
module_init(lbs_init_module);
module_exit(lbs_exit_module);
MODULE_DESCRIPTION("Libertas WLAN Driver Library");
MODULE_AUTHOR("Marvell International Ltd.");
MODULE_LICENSE("GPL");