/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Common private data for Silicon Labs WFx chips.
 *
 * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
 * Copyright (c) 2010, ST-Ericsson
 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
 * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
 */
#ifndef WFX_H
#define WFX_H

#include <linux/completion.h>
#include <linux/workqueue.h>
#include <linux/mutex.h>
#include <linux/nospec.h>
#include <net/mac80211.h>

#include "bh.h"
#include "data_tx.h"
#include "main.h"
#include "queue.h"
#include "hif_tx.h"

#define USEC_PER_TXOP 32 // see struct ieee80211_tx_queue_params
#define USEC_PER_TU 1024

struct hwbus_ops;

struct wfx_dev {
	struct wfx_platform_data pdata;
	struct device		*dev;
	struct ieee80211_hw	*hw;
	struct ieee80211_vif	*vif[2];
	struct mac_address	addresses[2];
	const struct hwbus_ops	*hwbus_ops;
	void			*hwbus_priv;

	u8			keyset;
	struct completion	firmware_ready;
	struct hif_ind_startup	hw_caps;
	struct wfx_hif		hif;
	struct delayed_work	cooling_timeout_work;
	bool			poll_irq;
	bool			chip_frozen;
	struct mutex		conf_mutex;

	struct wfx_hif_cmd	hif_cmd;
	struct sk_buff_head	tx_pending;
	wait_queue_head_t	tx_dequeue;
	atomic_t		tx_lock;

	atomic_t		packet_id;
	u32			key_map;

	struct hif_rx_stats	rx_stats;
	struct mutex		rx_stats_lock;
	struct hif_tx_power_loop_info tx_power_loop_info;
	struct mutex		tx_power_loop_info_lock;
	int			force_ps_timeout;
};

struct wfx_vif {
	struct wfx_dev		*wdev;
	struct ieee80211_vif	*vif;
	struct ieee80211_channel *channel;
	int			id;

	u32			link_id_map;

	bool			after_dtim_tx_allowed;
	bool			join_in_progress;

	struct delayed_work	beacon_loss_work;

	struct wfx_queue	tx_queue[4];
	struct tx_policy_cache	tx_policy_cache;
	struct work_struct	tx_policy_upload_work;

	struct work_struct	update_tim_work;

	unsigned long		uapsd_mask;

	/* avoid some operations in parallel with scan */
	struct mutex		scan_lock;
	struct work_struct	scan_work;
	struct completion	scan_complete;
	bool			scan_abort;
	struct ieee80211_scan_request *scan_req;

	struct completion	set_pm_mode_complete;
};

static inline struct wfx_vif *wdev_to_wvif(struct wfx_dev *wdev, int vif_id)
{
	if (vif_id >= ARRAY_SIZE(wdev->vif)) {
		dev_dbg(wdev->dev, "requesting non-existent vif: %d\n", vif_id);
		return NULL;
	}
	vif_id = array_index_nospec(vif_id, ARRAY_SIZE(wdev->vif));
	if (!wdev->vif[vif_id]) {
		dev_dbg(wdev->dev, "requesting non-allocated vif: %d\n",
			vif_id);
		return NULL;
	}
	return (struct wfx_vif *) wdev->vif[vif_id]->drv_priv;
}

static inline struct wfx_vif *wvif_iterate(struct wfx_dev *wdev,
					   struct wfx_vif *cur)
{
	int i;
	int mark = 0;
	struct wfx_vif *tmp;

	if (!cur)
		mark = 1;
	for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
		tmp = wdev_to_wvif(wdev, i);
		if (mark && tmp)
			return tmp;
		if (tmp == cur)
			mark = 1;
	}
	return NULL;
}

static inline int wvif_count(struct wfx_dev *wdev)
{
	int i;
	int ret = 0;
	struct wfx_vif *wvif;

	for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
		wvif = wdev_to_wvif(wdev, i);
		if (wvif)
			ret++;
	}
	return ret;
}

static inline void memreverse(u8 *src, u8 length)
{
	u8 *lo = src;
	u8 *hi = src + length - 1;
	u8 swap;

	while (lo < hi) {
		swap = *lo;
		*lo++ = *hi;
		*hi-- = swap;
	}
}

static inline int memzcmp(void *src, unsigned int size)
{
	u8 *buf = src;

	if (!size)
		return 0;
	if (*buf)
		return 1;
	return memcmp(buf, buf + 1, size - 1);
}

#endif /* WFX_H */
