/*
 * Definitions for RTL8187 hardware
 *
 * Copyright 2007 Michael Wu <flamingice@sourmilk.net>
 * Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
 *
 * Based on the r8187 driver, which is:
 * Copyright 2005 Andrea Merello <andreamrl@tiscali.it>, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef RTL8187_H
#define RTL8187_H

#include "rtl818x.h"
#include "leds.h"

#define RTL8187_EEPROM_TXPWR_BASE       0x05
#define RTL8187_EEPROM_MAC_ADDR         0x07
#define RTL8187_EEPROM_TXPWR_CHAN_1     0x16    /* 3 channels */
#define RTL8187_EEPROM_TXPWR_CHAN_6     0x1B    /* 2 channels */
#define RTL8187_EEPROM_TXPWR_CHAN_4     0x3D    /* 2 channels */
#define RTL8187_EEPROM_SELECT_GPIO      0x3B

#define RTL8187_REQT_READ       0xC0
#define RTL8187_REQT_WRITE      0x40
#define RTL8187_REQ_GET_REG     0x05
#define RTL8187_REQ_SET_REG     0x05

#define RTL8187_MAX_RX          0x9C4

#define RFKILL_MASK_8187_89_97  0x2
#define RFKILL_MASK_8198        0x4

#define RETRY_COUNT             7

struct rtl8187_rx_info {
        struct urb *urb;
        struct ieee80211_hw *dev;
};

struct rtl8187_rx_hdr {
        __le32 flags;
        u8 noise;
        u8 signal;
        u8 agc;
        u8 reserved;
        __le64 mac_time;
} __packed;

struct rtl8187b_rx_hdr {
        __le32 flags;
        __le64 mac_time;
        u8 sq;
        u8 rssi;
        u8 agc;
        u8 flags2;
        __le16 snr_long2end;
        s8 pwdb_g12;
        u8 fot;
} __packed;

/* {rtl8187,rtl8187b}_tx_info is in skb */

struct rtl8187_tx_hdr {
        __le32 flags;
        __le16 rts_duration;
        __le16 len;
        __le32 retry;
} __packed;

struct rtl8187b_tx_hdr {
        __le32 flags;
        __le16 rts_duration;
        __le16 len;
        __le32 unused_1;
        __le16 unused_2;
        __le16 tx_duration;
        __le32 unused_3;
        __le32 retry;
        __le32 unused_4[2];
} __packed;

enum {
        DEVICE_RTL8187,
        DEVICE_RTL8187B
};

struct rtl8187_priv {
        /* common between rtl818x drivers */
        struct rtl818x_csr *map;
        const struct rtl818x_rf_ops *rf;
        struct ieee80211_vif *vif;

        /* The mutex protects the TX loopback state.
         * Any attempt to set channels concurrently locks the device.
         */
        struct mutex conf_mutex;

        /* rtl8187 specific */
        struct ieee80211_channel channels[14];
        struct ieee80211_rate rates[12];
        struct ieee80211_supported_band band;
        struct usb_device *udev;
        u32 rx_conf;
        struct usb_anchor anchored;
        struct delayed_work work;
        struct ieee80211_hw *dev;
#ifdef CONFIG_RTL8187_LEDS
        struct rtl8187_led led_radio;
        struct rtl8187_led led_tx;
        struct rtl8187_led led_rx;
        struct delayed_work led_on;
        struct delayed_work led_off;
#endif
        u16 txpwr_base;
        u8 asic_rev;
        u8 is_rtl8187b;
        enum {
                RTL8187BvB,
                RTL8187BvD,
                RTL8187BvE
        } hw_rev;
        struct sk_buff_head rx_queue;
        u8 signal;
        u8 noise;
        u8 slot_time;
        u8 aifsn[4];
        u8 rfkill_mask;
        struct {
                __le64 buf;
                struct sk_buff_head queue;
        } b_tx_status; /* This queue is used by both -b and non-b devices */
        struct mutex io_mutex;
        union {
                u8 bits8;
                __le16 bits16;
                __le32 bits32;
        } *io_dmabuf;
        bool rfkill_off;
};

void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data);

static inline u8 rtl818x_ioread8_idx(struct rtl8187_priv *priv,
                                     u8 *addr, u8 idx)
{
        u8 val;

        mutex_lock(&priv->io_mutex);
        usb_control_msg(priv->udev, usb_rcvctrlpipe(priv->udev, 0),
                        RTL8187_REQ_GET_REG, RTL8187_REQT_READ,
                        (unsigned long)addr, idx & 0x03,
                        &priv->io_dmabuf->bits8, sizeof(val), HZ / 2);

        val = priv->io_dmabuf->bits8;
        mutex_unlock(&priv->io_mutex);

        return val;
}

static inline u8 rtl818x_ioread8(struct rtl8187_priv *priv, u8 *addr)
{
        return rtl818x_ioread8_idx(priv, addr, 0);
}

static inline u16 rtl818x_ioread16_idx(struct rtl8187_priv *priv,
                                       __le16 *addr, u8 idx)
{
        __le16 val;

        mutex_lock(&priv->io_mutex);
        usb_control_msg(priv->udev, usb_rcvctrlpipe(priv->udev, 0),
                        RTL8187_REQ_GET_REG, RTL8187_REQT_READ,
                        (unsigned long)addr, idx & 0x03,
                        &priv->io_dmabuf->bits16, sizeof(val), HZ / 2);

        val = priv->io_dmabuf->bits16;
        mutex_unlock(&priv->io_mutex);

        return le16_to_cpu(val);
}

static inline u16 rtl818x_ioread16(struct rtl8187_priv *priv, __le16 *addr)
{
        return rtl818x_ioread16_idx(priv, addr, 0);
}

static inline u32 rtl818x_ioread32_idx(struct rtl8187_priv *priv,
                                       __le32 *addr, u8 idx)
{
        __le32 val;

        mutex_lock(&priv->io_mutex);
        usb_control_msg(priv->udev, usb_rcvctrlpipe(priv->udev, 0),
                        RTL8187_REQ_GET_REG, RTL8187_REQT_READ,
                        (unsigned long)addr, idx & 0x03,
                        &priv->io_dmabuf->bits32, sizeof(val), HZ / 2);

        val = priv->io_dmabuf->bits32;
        mutex_unlock(&priv->io_mutex);

        return le32_to_cpu(val);
}

static inline u32 rtl818x_ioread32(struct rtl8187_priv *priv, __le32 *addr)
{
        return rtl818x_ioread32_idx(priv, addr, 0);
}

static inline void rtl818x_iowrite8_idx(struct rtl8187_priv *priv,
                                        u8 *addr, u8 val, u8 idx)
{
        mutex_lock(&priv->io_mutex);

        priv->io_dmabuf->bits8 = val;
        usb_control_msg(priv->udev, usb_sndctrlpipe(priv->udev, 0),
                        RTL8187_REQ_SET_REG, RTL8187_REQT_WRITE,
                        (unsigned long)addr, idx & 0x03,
                        &priv->io_dmabuf->bits8, sizeof(val), HZ / 2);

        mutex_unlock(&priv->io_mutex);
}

static inline void rtl818x_iowrite8(struct rtl8187_priv *priv, u8 *addr, u8 val)
{
        rtl818x_iowrite8_idx(priv, addr, val, 0);
}

static inline void rtl818x_iowrite16_idx(struct rtl8187_priv *priv,
                                         __le16 *addr, u16 val, u8 idx)
{
        mutex_lock(&priv->io_mutex);

        priv->io_dmabuf->bits16 = cpu_to_le16(val);
        usb_control_msg(priv->udev, usb_sndctrlpipe(priv->udev, 0),
                        RTL8187_REQ_SET_REG, RTL8187_REQT_WRITE,
                        (unsigned long)addr, idx & 0x03,
                        &priv->io_dmabuf->bits16, sizeof(val), HZ / 2);

        mutex_unlock(&priv->io_mutex);
}

static inline void rtl818x_iowrite16(struct rtl8187_priv *priv, __le16 *addr,
                                     u16 val)
{
        rtl818x_iowrite16_idx(priv, addr, val, 0);
}

static inline void rtl818x_iowrite32_idx(struct rtl8187_priv *priv,
                                         __le32 *addr, u32 val, u8 idx)
{
        mutex_lock(&priv->io_mutex);

        priv->io_dmabuf->bits32 = cpu_to_le32(val);
        usb_control_msg(priv->udev, usb_sndctrlpipe(priv->udev, 0),
                        RTL8187_REQ_SET_REG, RTL8187_REQT_WRITE,
                        (unsigned long)addr, idx & 0x03,
                        &priv->io_dmabuf->bits32, sizeof(val), HZ / 2);

        mutex_unlock(&priv->io_mutex);
}

static inline void rtl818x_iowrite32(struct rtl8187_priv *priv, __le32 *addr,
                                     u32 val)
{
        rtl818x_iowrite32_idx(priv, addr, val, 0);
}

#endif /* RTL8187_H */