leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
fe3361507a
linux/drivers/net/wireless/libertas/main.c
Dan Williams fe3361507a [PATCH] libertas: remove thread.h and make kthread usage clearer 
Remove the thread.h abstractions and opencode kthread stuff
to make it clearer.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10 16:49:44 -07:00

1183 lines
29 KiB
C
Raw Blame History

/**
* 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"
#define DRIVER_RELEASE_VERSION "322.p0"
const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
#ifdef DEBUG
"-dbg"
#endif
"";
/* Module parameters */
unsigned int libertas_debug = 0;
module_param(libertas_debug, int, 0644);
EXPORT_SYMBOL_GPL(libertas_debug);
#define WLAN_TX_PWR_DEFAULT 20 /*100mW */
#define WLAN_TX_PWR_US_DEFAULT 20 /*100mW */
#define WLAN_TX_PWR_JP_DEFAULT 16 /*50mW */
#define WLAN_TX_PWR_FR_DEFAULT 20 /*100mW */
#define WLAN_TX_PWR_EMEA_DEFAULT 20 /*100mW */
/* Format { channel, frequency (MHz), maxtxpower } */
/* band: 'B/G', region: USA FCC/Canada IC */
static struct chan_freq_power channel_freq_power_US_BG[] = {
{1, 2412, WLAN_TX_PWR_US_DEFAULT},
{2, 2417, WLAN_TX_PWR_US_DEFAULT},
{3, 2422, WLAN_TX_PWR_US_DEFAULT},
{4, 2427, WLAN_TX_PWR_US_DEFAULT},
{5, 2432, WLAN_TX_PWR_US_DEFAULT},
{6, 2437, WLAN_TX_PWR_US_DEFAULT},
{7, 2442, WLAN_TX_PWR_US_DEFAULT},
{8, 2447, WLAN_TX_PWR_US_DEFAULT},
{9, 2452, WLAN_TX_PWR_US_DEFAULT},
{10, 2457, WLAN_TX_PWR_US_DEFAULT},
{11, 2462, WLAN_TX_PWR_US_DEFAULT}
};
/* band: 'B/G', region: Europe ETSI */
static struct chan_freq_power channel_freq_power_EU_BG[] = {
{1, 2412, WLAN_TX_PWR_EMEA_DEFAULT},
{2, 2417, WLAN_TX_PWR_EMEA_DEFAULT},
{3, 2422, WLAN_TX_PWR_EMEA_DEFAULT},
{4, 2427, WLAN_TX_PWR_EMEA_DEFAULT},
{5, 2432, WLAN_TX_PWR_EMEA_DEFAULT},
{6, 2437, WLAN_TX_PWR_EMEA_DEFAULT},
{7, 2442, WLAN_TX_PWR_EMEA_DEFAULT},
{8, 2447, WLAN_TX_PWR_EMEA_DEFAULT},
{9, 2452, WLAN_TX_PWR_EMEA_DEFAULT},
{10, 2457, WLAN_TX_PWR_EMEA_DEFAULT},
{11, 2462, WLAN_TX_PWR_EMEA_DEFAULT},
{12, 2467, WLAN_TX_PWR_EMEA_DEFAULT},
{13, 2472, WLAN_TX_PWR_EMEA_DEFAULT}
};
/* band: 'B/G', region: Spain */
static struct chan_freq_power channel_freq_power_SPN_BG[] = {
{10, 2457, WLAN_TX_PWR_DEFAULT},
{11, 2462, WLAN_TX_PWR_DEFAULT}
};
/* band: 'B/G', region: France */
static struct chan_freq_power channel_freq_power_FR_BG[] = {
{10, 2457, WLAN_TX_PWR_FR_DEFAULT},
{11, 2462, WLAN_TX_PWR_FR_DEFAULT},
{12, 2467, WLAN_TX_PWR_FR_DEFAULT},
{13, 2472, WLAN_TX_PWR_FR_DEFAULT}
};
/* band: 'B/G', region: Japan */
static struct chan_freq_power channel_freq_power_JPN_BG[] = {
{1, 2412, WLAN_TX_PWR_JP_DEFAULT},
{2, 2417, WLAN_TX_PWR_JP_DEFAULT},
{3, 2422, WLAN_TX_PWR_JP_DEFAULT},
{4, 2427, WLAN_TX_PWR_JP_DEFAULT},
{5, 2432, WLAN_TX_PWR_JP_DEFAULT},
{6, 2437, WLAN_TX_PWR_JP_DEFAULT},
{7, 2442, WLAN_TX_PWR_JP_DEFAULT},
{8, 2447, WLAN_TX_PWR_JP_DEFAULT},
{9, 2452, WLAN_TX_PWR_JP_DEFAULT},
{10, 2457, WLAN_TX_PWR_JP_DEFAULT},
{11, 2462, WLAN_TX_PWR_JP_DEFAULT},
{12, 2467, WLAN_TX_PWR_JP_DEFAULT},
{13, 2472, WLAN_TX_PWR_JP_DEFAULT},
{14, 2484, WLAN_TX_PWR_JP_DEFAULT}
};
/**
* the structure for channel, frequency and power
*/
struct region_cfp_table {
u8 region;
struct chan_freq_power *cfp_BG;
int cfp_no_BG;
};
/**
* the structure for the mapping between region and CFP
*/
static struct region_cfp_table region_cfp_table[] = {
{0x10, /*US FCC */
channel_freq_power_US_BG,
sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
}
,
{0x20, /*CANADA IC */
channel_freq_power_US_BG,
sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
}
,
{0x30, /*EU*/ channel_freq_power_EU_BG,
sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power),
}
,
{0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power),
}
,
{0x32, /*FRANCE*/ channel_freq_power_FR_BG,
sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power),
}
,
{0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power),
}
,
/*Add new region here */
};
/**
* the rates supported
*/
u8 libertas_supported_rates[G_SUPPORTED_RATES] =
{ 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
0 };
/**
* the rates supported for ad-hoc G mode
*/
u8 libertas_adhoc_rates_g[G_SUPPORTED_RATES] =
{ 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
0 };
/**
* the rates supported for ad-hoc B mode
*/
u8 libertas_adhoc_rates_b[4] = { 0x82, 0x84, 0x8b, 0x96 };
/**
* the table to keep region code
*/
u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
{ 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
/**
* Attributes exported through sysfs
*/
/**
* @brief Get function for sysfs attribute anycast_mask
*/
static ssize_t libertas_anycast_get(struct device * dev,
struct device_attribute *attr, char * buf)
{
struct cmd_ds_mesh_access mesh_access;
memset(&mesh_access, 0, sizeof(mesh_access));
libertas_prepare_and_send_command(to_net_dev(dev)->priv,
CMD_MESH_ACCESS,
CMD_ACT_MESH_GET_ANYCAST,
CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
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 libertas_anycast_set(struct device * dev,
struct device_attribute *attr, const char * buf, size_t count)
{
struct cmd_ds_mesh_access mesh_access;
uint32_t datum;
memset(&mesh_access, 0, sizeof(mesh_access));
sscanf(buf, "%x", &datum);
mesh_access.data[0] = cpu_to_le32(datum);
libertas_prepare_and_send_command((to_net_dev(dev))->priv,
CMD_MESH_ACCESS,
CMD_ACT_MESH_SET_ANYCAST,
CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
return strlen(buf);
}
/**
* anycast_mask attribute to be exported per mshX interface
* through sysfs (/sys/class/net/mshX/anycast_mask)
*/
static DEVICE_ATTR(anycast_mask, 0644, libertas_anycast_get, libertas_anycast_set);
/**
* @brief Check if the device can be open and wait if necessary.
*
* @param dev A pointer to net_device structure
* @return 0
*
* For USB adapter, on some systems the device open handler will be
* called before FW ready. Use the following flag check and wait
* function to work around the issue.
*
*/
static int pre_open_check(struct net_device *dev)
{
wlan_private *priv = (wlan_private *) dev->priv;
wlan_adapter *adapter = priv->adapter;
int i = 0;
while (!adapter->fw_ready && i < 20) {
i++;
msleep_interruptible(100);
}
if (!adapter->fw_ready) {
lbs_pr_err("firmware not ready\n");
return -1;
}
return 0;
}
/**
* @brief This function opens the device
*
* @param dev A pointer to net_device structure
* @return 0
*/
static int wlan_dev_open(struct net_device *dev)
{
wlan_private *priv = (wlan_private *) dev->priv;
wlan_adapter *adapter = priv->adapter;
lbs_deb_enter(LBS_DEB_NET);
priv->open = 1;
if (adapter->connect_status == LIBERTAS_CONNECTED) {
netif_carrier_on(priv->dev);
netif_carrier_on(priv->mesh_dev);
} else {
netif_carrier_off(priv->dev);
netif_carrier_off(priv->mesh_dev);
}
lbs_deb_leave(LBS_DEB_NET);
return 0;
}
/**
* @brief This function opens the mshX interface
*
* @param dev A pointer to net_device structure
* @return 0
*/
static int mesh_open(struct net_device *dev)
{
wlan_private *priv = (wlan_private *) dev->priv ;
if (pre_open_check(dev) == -1)
return -1;
priv->mesh_open = 1 ;
netif_wake_queue(priv->mesh_dev);
if (priv->infra_open == 0)
return wlan_dev_open(priv->dev) ;
return 0;
}
/**
* @brief This function opens the ethX interface
*
* @param dev A pointer to net_device structure
* @return 0
*/
static int wlan_open(struct net_device *dev)
{
wlan_private *priv = (wlan_private *) dev->priv ;
if(pre_open_check(dev) == -1)
return -1;
priv->infra_open = 1 ;
netif_wake_queue(priv->dev);
if (priv->open == 0)
return wlan_dev_open(priv->dev) ;
return 0;
}
static int wlan_dev_close(struct net_device *dev)
{
wlan_private *priv = dev->priv;
lbs_deb_enter(LBS_DEB_NET);
netif_carrier_off(priv->dev);
priv->open = 0;
lbs_deb_leave(LBS_DEB_NET);
return 0;
}
/**
* @brief This function closes the mshX interface
*
* @param dev A pointer to net_device structure
* @return 0
*/
static int mesh_close(struct net_device *dev)
{
wlan_private *priv = (wlan_private *) (dev->priv);
priv->mesh_open = 0;
netif_stop_queue(priv->mesh_dev);
if (priv->infra_open == 0)
return wlan_dev_close(dev);
else
return 0;
}
/**
* @brief This function closes the ethX interface
*
* @param dev A pointer to net_device structure
* @return 0
*/
static int wlan_close(struct net_device *dev)
{
wlan_private *priv = (wlan_private *) dev->priv;
netif_stop_queue(dev);
priv->infra_open = 0;
if (priv->mesh_open == 0)
return wlan_dev_close(dev);
else
return 0;
}
static int wlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
int ret = 0;
wlan_private *priv = dev->priv;
lbs_deb_enter(LBS_DEB_NET);
if (priv->dnld_sent || priv->adapter->TxLockFlag) {
priv->stats.tx_dropped++;
goto done;
}
netif_stop_queue(priv->dev);
netif_stop_queue(priv->mesh_dev);
if (libertas_process_tx(priv, skb) == 0)
dev->trans_start = jiffies;
done:
lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
return ret;
}
/**
* @brief Mark mesh packets and handover them to wlan_hard_start_xmit
*
*/
static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
wlan_private *priv = dev->priv;
int ret;
lbs_deb_enter(LBS_DEB_MESH);
SET_MESH_FRAME(skb);
ret = wlan_hard_start_xmit(skb, priv->dev);
lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
return ret;
}
/**
* @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
*
*/
static int wlan_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
int ret;
lbs_deb_enter(LBS_DEB_NET);
UNSET_MESH_FRAME(skb);
ret = wlan_hard_start_xmit(skb, dev);
lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
return ret;
}
static void wlan_tx_timeout(struct net_device *dev)
{
wlan_private *priv = (wlan_private *) dev->priv;
lbs_deb_enter(LBS_DEB_TX);
lbs_pr_err("tx watch dog timeout\n");
priv->dnld_sent = DNLD_RES_RECEIVED;
dev->trans_start = jiffies;
if (priv->adapter->currenttxskb) {
if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) {
/* If we are here, we have not received feedback from
the previous packet. Assume TX_FAIL and move on. */
priv->adapter->eventcause = 0x01000000;
libertas_send_tx_feedback(priv);
} else
wake_up_interruptible(&priv->waitq);
} else if (priv->adapter->connect_status == LIBERTAS_CONNECTED) {
netif_wake_queue(priv->dev);
netif_wake_queue(priv->mesh_dev);
}
lbs_deb_leave(LBS_DEB_TX);
}
/**
* @brief This function returns the network statistics
*
* @param dev A pointer to wlan_private structure
* @return A pointer to net_device_stats structure
*/
static struct net_device_stats *wlan_get_stats(struct net_device *dev)
{
wlan_private *priv = (wlan_private *) dev->priv;
return &priv->stats;
}
static int wlan_set_mac_address(struct net_device *dev, void *addr)
{
int ret = 0;
wlan_private *priv = (wlan_private *) dev->priv;
wlan_adapter *adapter = priv->adapter;
struct sockaddr *phwaddr = addr;
lbs_deb_enter(LBS_DEB_NET);
/* In case it was called from the mesh device */
dev = priv->dev ;
memset(adapter->current_addr, 0, ETH_ALEN);
/* dev->dev_addr is 8 bytes */
lbs_dbg_hex("dev->dev_addr:", dev->dev_addr, ETH_ALEN);
lbs_dbg_hex("addr:", phwaddr->sa_data, ETH_ALEN);
memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
ret = libertas_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
CMD_ACT_SET,
CMD_OPTION_WAITFORRSP, 0, NULL);
if (ret) {
lbs_deb_net("set MAC address failed\n");
ret = -1;
goto done;
}
lbs_dbg_hex("adapter->macaddr:", adapter->current_addr, ETH_ALEN);
memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
if (priv->mesh_dev)
memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
done:
lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
return ret;
}
static int wlan_copy_multicast_address(wlan_adapter * adapter,
struct net_device *dev)
{
int i = 0;
struct dev_mc_list *mcptr = dev->mc_list;
for (i = 0; i < dev->mc_count; i++) {
memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
mcptr = mcptr->next;
}
return i;
}
static void wlan_set_multicast_list(struct net_device *dev)
{
wlan_private *priv = dev->priv;
wlan_adapter *adapter = priv->adapter;
int oldpacketfilter;
lbs_deb_enter(LBS_DEB_NET);
oldpacketfilter = adapter->currentpacketfilter;
if (dev->flags & IFF_PROMISC) {
lbs_deb_net("enable promiscuous mode\n");
adapter->currentpacketfilter |=
CMD_ACT_MAC_PROMISCUOUS_ENABLE;
adapter->currentpacketfilter &=
~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
CMD_ACT_MAC_MULTICAST_ENABLE);
} else {
/* Multicast */
adapter->currentpacketfilter &=
~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
if (dev->flags & IFF_ALLMULTI || dev->mc_count >
MRVDRV_MAX_MULTICAST_LIST_SIZE) {
lbs_deb_net( "enabling all multicast\n");
adapter->currentpacketfilter |=
CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
adapter->currentpacketfilter &=
~CMD_ACT_MAC_MULTICAST_ENABLE;
} else {
adapter->currentpacketfilter &=
~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
if (!dev->mc_count) {
lbs_deb_net("no multicast addresses, "
"disabling multicast\n");
adapter->currentpacketfilter &=
~CMD_ACT_MAC_MULTICAST_ENABLE;
} else {
int i;
adapter->currentpacketfilter |=
CMD_ACT_MAC_MULTICAST_ENABLE;
adapter->nr_of_multicastmacaddr =
wlan_copy_multicast_address(adapter, dev);
lbs_deb_net("multicast addresses: %d\n",
dev->mc_count);
for (i = 0; i < dev->mc_count; i++) {
lbs_deb_net("Multicast address %d:"
MAC_FMT "\n", i,
adapter->multicastlist[i][0],
adapter->multicastlist[i][1],
adapter->multicastlist[i][2],
adapter->multicastlist[i][3],
adapter->multicastlist[i][4],
adapter->multicastlist[i][5]);
}
/* send multicast addresses to firmware */
libertas_prepare_and_send_command(priv,
CMD_MAC_MULTICAST_ADR,
CMD_ACT_SET, 0, 0,
NULL);
}
}
}
if (adapter->currentpacketfilter != oldpacketfilter) {
libertas_set_mac_packet_filter(priv);
}
lbs_deb_leave(LBS_DEB_NET);
}
/**
* @brief This function handles the major jobs in the WLAN driver.
* It handles all events generated by firmware, RX data received
* from firmware and TX data sent from kernel.
*
* @param data A pointer to wlan_thread structure
* @return 0
*/
static int libertas_thread(void *data)
{
struct net_device *dev = data;
wlan_private *priv = dev->priv;
wlan_adapter *adapter = priv->adapter;
wait_queue_t wait;
u8 ireg = 0;
lbs_deb_enter(LBS_DEB_THREAD);
init_waitqueue_entry(&wait, current);
for (;;) {
lbs_deb_thread( "main-thread 111: intcounter=%d "
"currenttxskb=%p dnld_sent=%d\n",
adapter->intcounter,
adapter->currenttxskb, priv->dnld_sent);
add_wait_queue(&priv->waitq, &wait);
set_current_state(TASK_INTERRUPTIBLE);
spin_lock_irq(&adapter->driver_lock);
if ((adapter->psstate == PS_STATE_SLEEP) ||
(!adapter->intcounter
&& (priv->dnld_sent || adapter->cur_cmd ||
list_empty(&adapter->cmdpendingq)))) {
lbs_deb_thread(
"main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
adapter->connect_status, adapter->intcounter,
adapter->psmode, adapter->psstate);
spin_unlock_irq(&adapter->driver_lock);
schedule();
} else
spin_unlock_irq(&adapter->driver_lock);
lbs_deb_thread(
"main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
"dnld_sent=%d\n", adapter->intcounter,
adapter->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",
adapter->intcounter,
adapter->currenttxskb, priv->dnld_sent);
if (kthread_should_stop()
|| adapter->surpriseremoved) {
lbs_deb_thread(
"main-thread: break from main thread: surpriseremoved=0x%x\n",
adapter->surpriseremoved);
break;
}
spin_lock_irq(&adapter->driver_lock);
if (adapter->intcounter) {
u8 int_status;
adapter->intcounter = 0;
int_status = 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(&adapter->driver_lock);
continue;
}
adapter->hisregcpy |= ireg;
}
lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
"dnld_sent=%d\n",
adapter->intcounter,
adapter->currenttxskb, priv->dnld_sent);
/* command response? */
if (adapter->hisregcpy & his_cmdupldrdy) {
lbs_deb_thread("main-thread: cmd response ready\n");
adapter->hisregcpy &= ~his_cmdupldrdy;
spin_unlock_irq(&adapter->driver_lock);
libertas_process_rx_command(priv);
spin_lock_irq(&adapter->driver_lock);
}
/* Any Card Event */
if (adapter->hisregcpy & his_cardevent) {
lbs_deb_thread("main-thread: Card Event Activity\n");
adapter->hisregcpy &= ~his_cardevent;
if (priv->hw_read_event_cause(priv)) {
lbs_pr_alert(
"main-thread: hw_read_event_cause failed\n");
spin_unlock_irq(&adapter->driver_lock);
continue;
}
spin_unlock_irq(&adapter->driver_lock);
libertas_process_event(priv);
} else
spin_unlock_irq(&adapter->driver_lock);
/* Check if we need to confirm Sleep Request received previously */
if (adapter->psstate == PS_STATE_PRE_SLEEP) {
if (!priv->dnld_sent && !adapter->cur_cmd) {
if (adapter->connect_status ==
LIBERTAS_CONNECTED) {
lbs_deb_thread(
"main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
"dnld_sent=%d cur_cmd=%p, confirm now\n",
adapter->intcounter,
adapter->currenttxskb,
priv->dnld_sent,
adapter->cur_cmd);
libertas_ps_confirm_sleep(priv,
(u16) adapter->psmode);
} else {
/* workaround for firmware sending
* deauth/linkloss event immediately
* after sleep request, remove this
* after firmware fixes it
*/
adapter->psstate = PS_STATE_AWAKE;
lbs_pr_alert(
"main-thread: ignore PS_SleepConfirm in non-connected state\n");
}
}
}
/* The PS state is changed during processing of Sleep Request
* event above
*/
if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
(priv->adapter->psstate == PS_STATE_PRE_SLEEP))
continue;
/* Execute the next command */
if (!priv->dnld_sent && !priv->adapter->cur_cmd)
libertas_execute_next_command(priv);
/* Wake-up command waiters which can't sleep in
* libertas_prepare_and_send_command
*/
if (!adapter->nr_cmd_pending)
wake_up_all(&adapter->cmd_pending);
libertas_tx_runqueue(priv);
}
del_timer(&adapter->command_timer);
adapter->nr_cmd_pending = 0;
wake_up_all(&adapter->cmd_pending);
lbs_deb_leave(LBS_DEB_THREAD);
return 0;
}
/**
* @brief This function adds the card. it will probe the
* card, allocate the wlan_priv and initialize the device.
*
* @param card A pointer to card
* @return A pointer to wlan_private structure
*/
wlan_private *libertas_add_card(void *card, struct device *dmdev)
{
struct net_device *dev = NULL;
wlan_private *priv = NULL;
lbs_deb_enter(LBS_DEB_NET);
/* Allocate an Ethernet device and register it */
if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
lbs_pr_err("init ethX device failed\n");
return NULL;
}
priv = dev->priv;
/* allocate buffer for wlan_adapter */
if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
lbs_pr_err("allocate buffer for wlan_adapter failed\n");
goto err_kzalloc;
}
priv->dev = dev;
priv->card = card;
priv->mesh_open = 0;
priv->infra_open = 0;
SET_MODULE_OWNER(dev);
/* Setup the OS Interface to our functions */
dev->open = wlan_open;
dev->hard_start_xmit = wlan_pre_start_xmit;
dev->stop = wlan_close;
dev->set_mac_address = wlan_set_mac_address;
dev->tx_timeout = wlan_tx_timeout;
dev->get_stats = wlan_get_stats;
dev->watchdog_timeo = 5 * HZ;
dev->ethtool_ops = &libertas_ethtool_ops;
#ifdef WIRELESS_EXT
dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
#endif
#define NETIF_F_DYNALLOC 16
dev->features |= NETIF_F_DYNALLOC;
dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
dev->set_multicast_list = wlan_set_multicast_list;
SET_NETDEV_DEV(dev, dmdev);
INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
spin_lock_init(&priv->adapter->driver_lock);
init_waitqueue_head(&priv->adapter->cmd_pending);
priv->adapter->nr_cmd_pending = 0;
goto done;
err_kzalloc:
free_netdev(dev);
priv = NULL;
done:
lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
return priv;
}
EXPORT_SYMBOL_GPL(libertas_add_card);
int libertas_activate_card(wlan_private *priv, char *fw_name)
{
struct net_device *dev = priv->dev;
int ret = -1;
lbs_deb_enter(LBS_DEB_MAIN);
lbs_deb_thread("Starting main thread...\n");
init_waitqueue_head(&priv->waitq);
priv->main_thread = kthread_run(libertas_thread, dev, "libertas_main");
if (IS_ERR(priv->main_thread)) {
lbs_deb_thread("Error creating main thread.\n");
goto done;
}
priv->assoc_thread =
create_singlethread_workqueue("libertas_assoc");
INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
INIT_WORK(&priv->sync_channel, libertas_sync_channel);
/*
* Register the device. Fillup the private data structure with
* relevant information from the card and request for the required
* IRQ.
*/
if (priv->hw_register_dev(priv) < 0) {
lbs_pr_err("failed to register WLAN device\n");
goto err_registerdev;
}
/* init FW and HW */
if (fw_name && libertas_init_fw(priv, fw_name)) {
lbs_pr_err("firmware init failed\n");
goto err_registerdev;
}
if (register_netdev(dev)) {
lbs_pr_err("cannot register ethX device\n");
goto err_init_fw;
}
lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
libertas_debugfs_init_one(priv, dev);
ret = 0;
goto done;
err_init_fw:
priv->hw_unregister_dev(priv);
err_registerdev:
destroy_workqueue(priv->assoc_thread);
/* Stop the thread servicing the interrupts */
wake_up_interruptible(&priv->waitq);
kthread_stop(priv->main_thread);
done:
lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(libertas_activate_card);
/**
* @brief This function adds mshX interface
*
* @param priv A pointer to the wlan_private structure
* @return 0 if successful, -X otherwise
*/
int libertas_add_mesh(wlan_private *priv, struct device *dev)
{
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;
SET_MODULE_OWNER(mesh_dev);
mesh_dev->open = mesh_open;
mesh_dev->hard_start_xmit = mesh_pre_start_xmit;
mesh_dev->stop = mesh_close;
mesh_dev->get_stats = wlan_get_stats;
mesh_dev->set_mac_address = wlan_set_mac_address;
mesh_dev->ethtool_ops = &libertas_ethtool_ops;
memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
sizeof(priv->dev->dev_addr));
SET_NETDEV_DEV(priv->mesh_dev, dev);
#ifdef WIRELESS_EXT
mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
#endif
#define NETIF_F_DYNALLOC 16
/* Register virtual mesh interface */
ret = register_netdev(mesh_dev);
if (ret) {
lbs_pr_err("cannot register mshX virtual interface\n");
goto err_free;
}
ret = device_create_file(&(mesh_dev->dev), &dev_attr_anycast_mask);
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(libertas_add_mesh);
static void wake_pending_cmdnodes(wlan_private *priv)
{
struct cmd_ctrl_node *cmdnode;
unsigned long flags;
lbs_deb_enter(LBS_DEB_CMD);
spin_lock_irqsave(&priv->adapter->driver_lock, flags);
list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
cmdnode->cmdwaitqwoken = 1;
wake_up_interruptible(&cmdnode->cmdwait_q);
}
spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
}
int libertas_remove_card(wlan_private *priv)
{
wlan_adapter *adapter;
struct net_device *dev;
union iwreq_data wrqu;
lbs_deb_enter(LBS_DEB_NET);
if (!priv)
goto out;
adapter = priv->adapter;
if (!adapter)
goto out;
dev = priv->dev;
netif_stop_queue(priv->dev);
netif_carrier_off(priv->dev);
wake_pending_cmdnodes(priv);
unregister_netdev(dev);
cancel_delayed_work(&priv->assoc_work);
destroy_workqueue(priv->assoc_thread);
if (adapter->psmode == WLAN802_11POWERMODEMAX_PSP) {
adapter->psmode = WLAN802_11POWERMODECAM;
libertas_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
}
memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
wrqu.ap_addr.sa_family = ARPHRD_ETHER;
wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
adapter->surpriseremoved = 1;
/* Stop the thread servicing the interrupts */
kthread_stop(priv->main_thread);
libertas_debugfs_remove_one(priv);
lbs_deb_net("free adapter\n");
libertas_free_adapter(priv);
lbs_deb_net("unregister finish\n");
priv->dev = NULL;
free_netdev(dev);
out:
lbs_deb_leave(LBS_DEB_NET);
return 0;
}
EXPORT_SYMBOL_GPL(libertas_remove_card);
void libertas_remove_mesh(wlan_private *priv)
{
struct net_device *mesh_dev;
lbs_deb_enter(LBS_DEB_NET);
if (!priv)
goto out;
mesh_dev = priv->mesh_dev;
netif_stop_queue(mesh_dev);
netif_carrier_off(priv->mesh_dev);
device_remove_file(&(mesh_dev->dev), &dev_attr_anycast_mask);
unregister_netdev(mesh_dev);
priv->mesh_dev = NULL ;
free_netdev(mesh_dev);
out:
lbs_deb_leave(LBS_DEB_NET);
}
EXPORT_SYMBOL_GPL(libertas_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 *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
{
int i, end;
lbs_deb_enter(LBS_DEB_MAIN);
end = sizeof(region_cfp_table)/sizeof(struct 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 libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
{
wlan_adapter *adapter = priv->adapter;
int ret = 0;
int i = 0;
struct chan_freq_power *cfp;
int cfp_no;
lbs_deb_enter(LBS_DEB_MAIN);
memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
{
cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
if (cfp != NULL) {
adapter->region_channel[i].nrcfp = cfp_no;
adapter->region_channel[i].CFP = cfp;
} else {
lbs_deb_main("wrong region code %#x in band B/G\n",
region);
ret = -1;
goto out;
}
adapter->region_channel[i].valid = 1;
adapter->region_channel[i].region = region;
adapter->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 libertas_interrupt(struct net_device *dev)
{
wlan_private *priv = dev->priv;
lbs_deb_enter(LBS_DEB_THREAD);
lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
priv->adapter->intcounter);
priv->adapter->intcounter++;
if (priv->adapter->psstate == PS_STATE_SLEEP) {
priv->adapter->psstate = PS_STATE_AWAKE;
netif_wake_queue(dev);
netif_wake_queue(priv->mesh_dev);
}
wake_up_interruptible(&priv->waitq);
lbs_deb_leave(LBS_DEB_THREAD);
}
EXPORT_SYMBOL_GPL(libertas_interrupt);
static int libertas_init_module(void)
{
lbs_deb_enter(LBS_DEB_MAIN);
libertas_debugfs_init();
lbs_deb_leave(LBS_DEB_MAIN);
return 0;
}
static void libertas_exit_module(void)
{
lbs_deb_enter(LBS_DEB_MAIN);
libertas_debugfs_remove();
lbs_deb_leave(LBS_DEB_MAIN);
}
module_init(libertas_init_module);
module_exit(libertas_exit_module);
MODULE_DESCRIPTION("Libertas WLAN Driver Library");
MODULE_AUTHOR("Marvell International Ltd.");
MODULE_LICENSE("GPL");
Reference in New Issue View Git Blame Copy Permalink