/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Common private data.
 *
 * 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 wfx_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 wfx_hwbus_ops *hwbus_ops;
        void                       *hwbus_priv;

        u8                         keyset;
        struct completion          firmware_ready;
        struct wfx_hif_ind_startup hw_caps;
        struct wfx_hif             hif;
        struct delayed_work        cooling_timeout_work;
        bool                       poll_irq;
        bool                       chip_frozen;
        struct mutex               scan_lock;
        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 wfx_hif_rx_stats    rx_stats;
        struct mutex               rx_stats_lock;
        struct wfx_hif_tx_power_loop_info tx_power_loop_info;
        struct mutex               tx_power_loop_info_lock;
        struct workqueue_struct    *bh_wq;
};

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

        u32                        link_id_map;

        bool                       after_dtim_tx_allowed;
        bool                       join_in_progress;
        struct completion          set_pm_mode_complete;

        struct delayed_work        beacon_loss_work;

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

        struct work_struct         update_tim_work;

        unsigned long              uapsd_mask;

        struct work_struct         scan_work;
        struct completion          scan_complete;
        int                        scan_nb_chan_done;
        bool                       scan_abort;
        struct ieee80211_scan_request *scan_req;

        struct ieee80211_channel   *remain_on_channel_chan;
        int                        remain_on_channel_duration;
        struct work_struct         remain_on_channel_work;
};

static inline struct ieee80211_vif *wvif_to_vif(struct wfx_vif *wvif)
{
        return container_of((void *)wvif, struct ieee80211_vif, drv_priv);
}

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])
                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