/**
* This file contains the initialization for FW and HW
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/vmalloc.h>
#include <linux/firmware.h>
#include <linux/version.h>
#include "host.h"
#include "sbi.h"
#include "defs.h"
#include "decl.h"
#include "dev.h"
#include "fw.h"
#include "wext.h"
#include "if_usb.h"
char *libertas_fw_name = NULL;
module_param_named(fw_name, libertas_fw_name, charp, 0644);
unsigned int libertas_debug = 0;
module_param(libertas_debug, int, 0);
/**
* @brief This function checks the validity of Boot2/FW image.
*
* @param data pointer to image
* len image length
* @return 0 or -1
*/
static int check_fwfile_format(u8 *data, u32 totlen)
{
u8 bincmd, exit;
u32 blksize, offset, len;
int ret;
ret = 1;
exit = len = 0;
do {
bincmd = *data;
blksize = *(u32*)(data + offsetof(struct fwheader, datalength));
switch (bincmd) {
case FW_HAS_DATA_TO_RECV:
offset = sizeof(struct fwheader) + blksize;
data += offset;
len += offset;
if (len >= totlen)
exit = 1;
break;
case FW_HAS_LAST_BLOCK:
exit = 1;
ret = 0;
break;
default:
exit = 1;
break;
}
} while (!exit);
if (ret)
lbs_pr_err("bin file format check FAIL...\n");
else
lbs_pr_debug(1, "bin file format check PASS...\n");
return ret;
}
/**
* @brief This function downloads firmware image, gets
* HW spec from firmware and set basic parameters to
* firmware.
*
* @param priv A pointer to wlan_private structure
* @return 0 or -1
*/
static int wlan_setup_station_hw(wlan_private * priv)
{
int ret = -1;
wlan_adapter *adapter = priv->adapter;
ENTER();
if ((ret = request_firmware(&priv->firmware, libertas_fw_name,
priv->hotplug_device)) < 0) {
lbs_pr_err("request_firmware() failed, error code = %#x\n",
ret);
lbs_pr_err("%s not found in /lib/firmware\n", libertas_fw_name);
goto done;
}
if(check_fwfile_format(priv->firmware->data, priv->firmware->size)) {
release_firmware(priv->firmware);
goto done;
}
ret = libertas_sbi_prog_firmware(priv);
release_firmware(priv->firmware);
if (ret) {
lbs_pr_debug(1, "Bootloader in invalid state!\n");
ret = -1;
goto done;
}
/*
* Read MAC address from HW
*/
memset(adapter->current_addr, 0xff, ETH_ALEN);
ret = libertas_prepare_and_send_command(priv, cmd_get_hw_spec,
0, cmd_option_waitforrsp, 0, NULL);
if (ret) {
ret = -1;
goto done;
}
libertas_set_mac_packet_filter(priv);
/* Get the supported Data rates */
ret = libertas_prepare_and_send_command(priv, cmd_802_11_data_rate,
cmd_act_get_tx_rate,
cmd_option_waitforrsp, 0, NULL);
if (ret) {
ret = -1;
goto done;
}
ret = 0;
done:
LEAVE();
return (ret);
}
static int wlan_allocate_adapter(wlan_private * priv)
{
u32 ulbufsize;
wlan_adapter *adapter = priv->adapter;
struct bss_descriptor *ptempscantable;
/* Allocate buffer to store the BSSID list */
ulbufsize = sizeof(struct bss_descriptor) * MRVDRV_MAX_BSSID_LIST;
if (!(ptempscantable = kmalloc(ulbufsize, GFP_KERNEL))) {
libertas_free_adapter(priv);
return -1;
}
adapter->scantable = ptempscantable;
memset(adapter->scantable, 0, ulbufsize);
/* Allocate the command buffers */
libertas_allocate_cmd_buffer(priv);
memset(&adapter->libertas_ps_confirm_sleep, 0, sizeof(struct PS_CMD_ConfirmSleep));
adapter->libertas_ps_confirm_sleep.seqnum = cpu_to_le16(++adapter->seqnum);
adapter->libertas_ps_confirm_sleep.command =
cpu_to_le16(cmd_802_11_ps_mode);
adapter->libertas_ps_confirm_sleep.size =
cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
adapter->libertas_ps_confirm_sleep.result = 0;
adapter->libertas_ps_confirm_sleep.action =
cpu_to_le16(cmd_subcmd_sleep_confirmed);
return 0;
}
static void wlan_init_adapter(wlan_private * priv)
{
wlan_adapter *adapter = priv->adapter;
int i;
adapter->scanprobes = 0;
adapter->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR;
adapter->data_avg_factor = DEFAULT_DATA_AVG_FACTOR;
/* ATIM params */
adapter->atimwindow = 0;
adapter->connect_status = libertas_disconnected;
memset(adapter->current_addr, 0xff, ETH_ALEN);
/* scan type */
adapter->scantype = cmd_scan_type_active;
/* scan mode */
adapter->scanmode = cmd_bss_type_any;
/* 802.11 specific */
adapter->secinfo.WEPstatus = wlan802_11WEPdisabled;
for (i = 0; i < sizeof(adapter->wep_keys) / sizeof(adapter->wep_keys[0]);
i++)
memset(&adapter->wep_keys[i], 0, sizeof(struct WLAN_802_11_KEY));
adapter->wep_tx_keyidx = 0;
adapter->secinfo.WEPstatus = wlan802_11WEPdisabled;
adapter->secinfo.authmode = wlan802_11authmodeopen;
adapter->secinfo.auth1xalg = WLAN_1X_AUTH_ALG_NONE;
adapter->secinfo.Encryptionmode = CIPHER_NONE;
adapter->inframode = wlan802_11infrastructure;
adapter->assoc_req = NULL;
adapter->numinscantable = 0;
adapter->pattemptedbssdesc = NULL;
mutex_init(&adapter->lock);
adapter->prescan = 1;
memset(&adapter->curbssparams, 0, sizeof(adapter->curbssparams));
/* PnP and power profile */
adapter->surpriseremoved = 0;
adapter->currentpacketfilter =
cmd_act_mac_rx_on | cmd_act_mac_tx_on;
adapter->radioon = RADIO_ON;
adapter->txantenna = RF_ANTENNA_2;
adapter->rxantenna = RF_ANTENNA_AUTO;
adapter->is_datarate_auto = 1;
adapter->beaconperiod = MRVDRV_BEACON_INTERVAL;
// set default value of capinfo.
#define SHORT_PREAMBLE_ALLOWED 1
memset(&adapter->capinfo, 0, sizeof(adapter->capinfo));
adapter->capinfo.shortpreamble = SHORT_PREAMBLE_ALLOWED;
adapter->adhocchannel = DEFAULT_AD_HOC_CHANNEL;
adapter->psmode = wlan802_11powermodecam;
adapter->multipledtim = MRVDRV_DEFAULT_MULTIPLE_DTIM;
adapter->listeninterval = MRVDRV_DEFAULT_LISTEN_INTERVAL;
adapter->psstate = PS_STATE_FULL_POWER;
adapter->needtowakeup = 0;
adapter->locallisteninterval = 0; /* default value in firmware will be used */
adapter->datarate = 0; // Initially indicate the rate as auto
adapter->adhoc_grate_enabled = 0;
adapter->intcounter = 0;
adapter->currenttxskb = NULL;
adapter->pkttxctrl = 0;
memset(&adapter->tx_queue_ps, 0, NR_TX_QUEUE*sizeof(struct sk_buff*));
adapter->tx_queue_idx = 0;
spin_lock_init(&adapter->txqueue_lock);
return;
}
static void command_timer_fn(unsigned long data);
int libertas_init_fw(wlan_private * priv)
{
int ret = -1;
wlan_adapter *adapter = priv->adapter;
ENTER();
/* Allocate adapter structure */
if ((ret = wlan_allocate_adapter(priv)) != 0)
goto done;
/* init adapter structure */
wlan_init_adapter(priv);
/* init timer etc. */
setup_timer(&adapter->command_timer, command_timer_fn,
(unsigned long)priv);
/* download fimrware etc. */
if ((ret = wlan_setup_station_hw(priv)) != 0) {
del_timer_sync(&adapter->command_timer);
goto done;
}
/* init 802.11d */
libertas_init_11d(priv);
ret = 0;
done:
LEAVE();
return ret;
}
void libertas_free_adapter(wlan_private * priv)
{
wlan_adapter *adapter = priv->adapter;
if (!adapter) {
lbs_pr_debug(1, "Why double free adapter?:)\n");
return;
}
lbs_pr_debug(1, "Free command buffer\n");
libertas_free_cmd_buffer(priv);
lbs_pr_debug(1, "Free commandTimer\n");
del_timer(&adapter->command_timer);
lbs_pr_debug(1, "Free scantable\n");
if (adapter->scantable) {
kfree(adapter->scantable);
adapter->scantable = NULL;
}
lbs_pr_debug(1, "Free adapter\n");
/* Free the adapter object itself */
kfree(adapter);
priv->adapter = NULL;
}
/**
* This function handles the timeout of command sending.
* It will re-send the same command again.
*/
static void command_timer_fn(unsigned long data)
{
wlan_private *priv = (wlan_private *)data;
wlan_adapter *adapter = priv->adapter;
struct cmd_ctrl_node *ptempnode;
struct cmd_ds_command *cmd;
unsigned long flags;
ptempnode = adapter->cur_cmd;
cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
lbs_pr_info("command_timer_fn fired (%x)\n", cmd->command);
if (!adapter->fw_ready)
return;
if (ptempnode == NULL) {
lbs_pr_debug(1, "PTempnode Empty\n");
return;
}
spin_lock_irqsave(&adapter->driver_lock, flags);
adapter->cur_cmd = NULL;
spin_unlock_irqrestore(&adapter->driver_lock, flags);
lbs_pr_debug(1, "Re-sending same command as it timeout...!\n");
libertas_queue_cmd(adapter, ptempnode, 0);
wake_up_interruptible(&priv->mainthread.waitq);
return;
}
