drivers/net/wireless/libertas/fw.c - maze/linux - Git at Google

 /**
   * 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;
 }
	/**
	* 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_QUEUEsizeof(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;
	}