linux/drivers/net/wireless/st/cw1200/bh.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Device handling thread implementation for mac80211 ST-Ericsson CW1200 drivers
 *
 * Copyright (c) 2010, ST-Ericsson
 * Author: Dmitry Tarnyagin <[email protected]>
 *
 * Based on:
 * ST-Ericsson UMAC CW1200 driver, which is
 * Copyright (c) 2010, ST-Ericsson
 * Author: Ajitpal Singh <[email protected]>
 */

#include <linux/module.h>
#include <net/mac80211.h>
#include <linux/kthread.h>
#include <linux/timer.h>

#include "cw1200.h"
#include "bh.h"
#include "hwio.h"
#include "wsm.h"
#include "hwbus.h"
#include "debug.h"
#include "fwio.h"

static int cw1200_bh(void *arg);

#define DOWNLOAD_BLOCK_SIZE_WR …
/* an SPI message cannot be bigger than (2"12-1)*2 bytes
 * "*2" to cvt to bytes
 */
#define MAX_SZ_RD_WR_BUFFERS …
#define PIGGYBACK_CTRL_REG …
#define EFFECTIVE_BUF_SIZE …

/* Suspend state privates */
enum cw1200_bh_pm_state { … };

static void cw1200_bh_work(struct work_struct *work)
{ … }

int cw1200_register_bh(struct cw1200_common *priv)
{ … }

void cw1200_unregister_bh(struct cw1200_common *priv)
{ … }

void cw1200_irq_handler(struct cw1200_common *priv)
{ … }
EXPORT_SYMBOL_GPL(…);

void cw1200_bh_wakeup(struct cw1200_common *priv)
{ … }

int cw1200_bh_suspend(struct cw1200_common *priv)
{ … }

int cw1200_bh_resume(struct cw1200_common *priv)
{ … }

static inline void wsm_alloc_tx_buffer(struct cw1200_common *priv)
{ … }

int wsm_release_tx_buffer(struct cw1200_common *priv, int count)
{ … }

static int cw1200_bh_read_ctrl_reg(struct cw1200_common *priv,
					  u16 *ctrl_reg)
{ … }

static int cw1200_device_wakeup(struct cw1200_common *priv)
{ … }

/* Must be called from BH thraed. */
void cw1200_enable_powersave(struct cw1200_common *priv,
			     bool enable)
{ … }

static int cw1200_bh_rx_helper(struct cw1200_common *priv,
			       uint16_t *ctrl_reg,
			       int *tx)
{ … }

static int cw1200_bh_tx_helper(struct cw1200_common *priv,
			       int *pending_tx,
			       int *tx_burst)
{ … }

static int cw1200_bh(void *arg)
{ … }