path: root/drivers/net/wireless/mwifiex/main.c

/*
 * Marvell Wireless LAN device driver: major functions
 *
 * Copyright (C) 2011, Marvell International Ltd.
 *
 * This software file (the "File") is distributed by Marvell International
 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
 * (the "License").  You may use, redistribute and/or modify this File in
 * accordance with the terms and conditions of the License, a copy of which
 * is available by writing to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 * this warranty disclaimer.
 */

#include "main.h"
#include "wmm.h"
#include "cfg80211.h"
#include "11n.h"

#define VERSION	"1.0"

const char driver_version[] = "mwifiex " VERSION " (%s) ";

static struct mwifiex_bss_attr mwifiex_bss_sta[] = {
	{MWIFIEX_BSS_TYPE_STA, MWIFIEX_DATA_FRAME_TYPE_ETH_II, true, 0, 0},
};

static int drv_mode = DRV_MODE_STA;

/* Supported drv_mode table */
static struct mwifiex_drv_mode mwifiex_drv_mode_tbl[] = {
	{
		.drv_mode = DRV_MODE_STA,
		.intf_num = ARRAY_SIZE(mwifiex_bss_sta),
		.bss_attr = mwifiex_bss_sta,
	},
};

/*
 * This function registers the device and performs all the necessary
 * initializations.
 *
 * The following initialization operations are performed -
 *      - Allocate adapter structure
 *      - Save interface specific operations table in adapter
 *      - Call interface specific initialization routine
 *      - Allocate private structures
 *      - Set default adapter structure parameters
 *      - Initialize locks
 *
 * In case of any errors during inittialization, this function also ensures
 * proper cleanup before exiting.
 */
static int mwifiex_register(void *card, struct mwifiex_if_ops *if_ops,
			    struct mwifiex_drv_mode *drv_mode_ptr,
			    void **padapter)
{
	struct mwifiex_adapter *adapter;
	int i;

	adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
	if (!adapter)
		return -ENOMEM;

	*padapter = adapter;
	adapter->card = card;

	/* Save interface specific operations in adapter */
	memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));

	/* card specific initialization has been deferred until now .. */
	if (adapter->if_ops.init_if(adapter))
		goto error;

	adapter->priv_num = 0;
	for (i = 0; i < drv_mode_ptr->intf_num; i++) {
		adapter->priv[i] = NULL;

		if (!drv_mode_ptr->bss_attr[i].active)
			continue;

		/* Allocate memory for private structure */
		adapter->priv[i] = kzalloc(sizeof(struct mwifiex_private),
				GFP_KERNEL);
		if (!adapter->priv[i]) {
			dev_err(adapter->dev, "%s: failed to alloc priv[%d]\n",
			       __func__, i);
			goto error;
		}

		adapter->priv_num++;
		adapter->priv[i]->adapter = adapter;
		/* Save bss_type, frame_type & bss_priority */
		adapter->priv[i]->bss_type = drv_mode_ptr->bss_attr[i].bss_type;
		adapter->priv[i]->frame_type =
					drv_mode_ptr->bss_attr[i].frame_type;
		adapter->priv[i]->bss_priority =
					drv_mode_ptr->bss_attr[i].bss_priority;

		if (drv_mode_ptr->bss_attr[i].bss_type == MWIFIEX_BSS_TYPE_STA)
			adapter->priv[i]->bss_role = MWIFIEX_BSS_ROLE_STA;
		else if (drv_mode_ptr->bss_attr[i].bss_type ==
							MWIFIEX_BSS_TYPE_UAP)
			adapter->priv[i]->bss_role = MWIFIEX_BSS_ROLE_UAP;

		/* Save bss_index & bss_num */
		adapter->priv[i]->bss_index = i;
		adapter->priv[i]->bss_num = drv_mode_ptr->bss_attr[i].bss_num;
	}
	adapter->drv_mode = drv_mode_ptr;

	if (mwifiex_init_lock_list(adapter))
		goto error;

	init_timer(&adapter->cmd_timer);
	adapter->cmd_timer.function = mwifiex_cmd_timeout_func;
	adapter->cmd_timer.data = (unsigned long) adapter;

	return 0;

error:
	dev_dbg(adapter->dev, "info: leave mwifiex_register with error\n");

	mwifiex_free_lock_list(adapter);
	for (i = 0; i < drv_mode_ptr->intf_num; i++)
		kfree(adapter->priv[i]);
	kfree(adapter);

	return -1;
}

/*
 * This function unregisters the device and performs all the necessary
 * cleanups.
 *
 * The following cleanup operations are performed -
 *      - Free the timers
 *      - Free beacon buffers
 *      - Free private structures
 *      - Free adapter structure
 */
static int mwifiex_unregister(struct mwifiex_adapter *