linux/drivers/net/wireless/marvell/mwifiex/init.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * NXP Wireless LAN device driver: HW/FW Initialization
 *
 * Copyright 2011-2020 NXP
 */

#include "decl.h"
#include "ioctl.h"
#include "util.h"
#include "fw.h"
#include "main.h"
#include "wmm.h"
#include "11n.h"

/*
 * This function adds a BSS priority table to the table list.
 *
 * The function allocates a new BSS priority table node and adds it to
 * the end of BSS priority table list, kept in driver memory.
 */
static int mwifiex_add_bss_prio_tbl(struct mwifiex_private *priv)
{ … }

static void wakeup_timer_fn(struct timer_list *t)
{ … }

static void fw_dump_work(struct work_struct *work)
{ … }

/*
 * This function initializes the private structure and sets default
 * values to the members.
 *
 * Additionally, it also initializes all the locks and sets up all the
 * lists.
 */
int mwifiex_init_priv(struct mwifiex_private *priv)
{ … }

/*
 * This function allocates buffers for members of the adapter
 * structure.
 *
 * The memory allocated includes scan table, command buffers, and
 * sleep confirm command buffer. In addition, the queues are
 * also initialized.
 */
static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
{ … }

/*
 * This function initializes the adapter structure and sets default
 * values to the members of adapter.
 *
 * This also initializes the WMM related parameters in the driver private
 * structures.
 */
static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
{ … }

/*
 * This function sets trans_start per tx_queue
 */
void mwifiex_set_trans_start(struct net_device *dev)
{ … }

/*
 * This function wakes up all queues in net_device
 */
void mwifiex_wake_up_net_dev_queue(struct net_device *netdev,
					struct mwifiex_adapter *adapter)
{ … }

/*
 * This function stops all queues in net_device
 */
void mwifiex_stop_net_dev_queue(struct net_device *netdev,
					struct mwifiex_adapter *adapter)
{ … }

/*
 * This function invalidates the list heads.
 */
static void mwifiex_invalidate_lists(struct mwifiex_adapter *adapter)
{ … }

/*
 * This function performs cleanup for adapter structure.
 *
 * The cleanup is done recursively, by canceling all pending
 * commands, freeing the member buffers previously allocated
 * (command buffers, scan table buffer, sleep confirm command
 * buffer), stopping the timers and calling the cleanup routines
 * for every interface.
 */
static void
mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter)
{ … }

void mwifiex_free_cmd_buffers(struct mwifiex_adapter *adapter)
{ … }

/*
 *  This function intializes the lock variables and
 *  the list heads.
 */
int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
{ … }

/*
 * This function initializes the firmware.
 *
 * The following operations are performed sequentially -
 *      - Allocate adapter structure
 *      - Initialize the adapter structure
 *      - Initialize the private structure
 *      - Add BSS priority tables to the adapter structure
 *      - For each interface, send the init commands to firmware
 *      - Send the first command in command pending queue, if available
 */
int mwifiex_init_fw(struct mwifiex_adapter *adapter)
{ … }

/*
 * This function deletes the BSS priority tables.
 *
 * The function traverses through all the allocated BSS priority nodes
 * in every BSS priority table and frees them.
 */
static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv)
{ … }

/*
 * This function frees the private structure, including cleans
 * up the TX and RX queues and frees the BSS priority tables.
 */
void mwifiex_free_priv(struct mwifiex_private *priv)
{ … }

/*
 * This function is used to shutdown the driver.
 *
 * The following operations are performed sequentially -
 *      - Check if already shut down
 *      - Make sure the main process has stopped
 *      - Clean up the Tx and Rx queues
 *      - Delete BSS priority tables
 *      - Free the adapter
 *      - Notify completion
 */
void
mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
{ … }

/*
 * This function downloads the firmware to the card.
 *
 * The actual download is preceded by two sanity checks -
 *      - Check if firmware is already running
 *      - Check if the interface is the winner to download the firmware
 *
 * ...and followed by another -
 *      - Check if the firmware is downloaded successfully
 *
 * After download is successfully completed, the host interrupts are enabled.
 */
int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
		    struct mwifiex_fw_image *pmfw)
{ … }
EXPORT_SYMBOL_GPL(…);