/*
 * This is part of rtl8180 OpenSource driver.
 * Copyright (C) Andrea Merello 2004-2005  <andrea.merello@gmail.com>
 * Released under the terms of GPL (General Public Licence)
 *
 * Parts of this driver are based on the GPL part of the official realtek driver
 *
 * Parts of this driver are based on the rtl8180 driver skeleton from Patric
 * Schenke & Andres Salomon
 *
 * Parts of this driver are based on the Intel Pro Wireless 2100 GPL driver
 *
 * We want to thanks the Authors of those projects and the Ndiswrapper project
 * Authors.
 */

#ifndef R8180H
#define R8180H

#include <linux/interrupt.h>

#define RTL8180_MODULE_NAME "r8180"
#define DMESG(x, a...) printk(KERN_INFO RTL8180_MODULE_NAME ": " x "\n", ## a)
#define DMESGW(x, a...) printk(KERN_WARNING RTL8180_MODULE_NAME ": WW:" x "\n", ## a)
#define DMESGE(x, a...) printk(KERN_WARNING RTL8180_MODULE_NAME ": EE:" x "\n", ## a)

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/netdevice.h>
#include <linux/pci.h>
#include <linux/etherdevice.h>
#include <linux/delay.h>
#include <linux/rtnetlink.h> /* for rtnl_lock() */
#include <linux/wireless.h>
#include <linux/timer.h>
#include <linux/proc_fs.h> /* Necessary because we use the proc fs. */
#include <linux/if_arp.h>
#include "ieee80211/ieee80211.h"
#include <asm/io.h>

#define EPROM_93c46 0
#define EPROM_93c56 1

#define RTL_IOCTL_WPA_SUPPLICANT (SIOCIWFIRSTPRIV + 30)

#define DEFAULT_FRAG_THRESHOLD 2342U
#define MIN_FRAG_THRESHOLD 256U
#define DEFAULT_RTS_THRESHOLD 2342U
#define MIN_RTS_THRESHOLD 0U
#define MAX_RTS_THRESHOLD 2342U
#define DEFAULT_BEACONINTERVAL 0x64U

#define DEFAULT_RETRY_RTS 7
#define DEFAULT_RETRY_DATA 7

#define BEACON_QUEUE 6

#define aSifsTime 10

#define sCrcLng 4
#define sAckCtsLng 112 /* bits in ACK and CTS frames. */
/* +by amy 080312. */
#define RATE_ADAPTIVE_TIMER_PERIOD 300

enum wireless_mode {
	WIRELESS_MODE_UNKNOWN = 0x00,
	WIRELESS_MODE_A = 0x01,
	WIRELESS_MODE_B = 0x02,
	WIRELESS_MODE_G = 0x04,
	WIRELESS_MODE_AUTO = 0x08,
};

struct chnl_access_setting {
	u16 sifs_timer;
	u16 difs_timer;
	u16 slot_time_timer;
	u16 eifs_timer;
	u16 cwmin_index;
	u16 cwmax_index;
};

enum nic_t {
	NIC_8185 = 1,
	NIC_8185B
};

typedef u32 AC_CODING;
#define AC0_BE	0 /* ACI: 0x00 */ /* Best Effort. */
#define AC1_BK	1 /* ACI: 0x01 */ /* Background. */
#define AC2_VI	2 /* ACI: 0x10 */ /* Video. */
#define AC3_VO	3 /* ACI: 0x11 */ /* Voice. */
#define AC_MAX	4 /* Max: define total number; Should not to be used as a real
		   * enum.
		   */

/*
 * ECWmin/ECWmax field.
 * Ref: WMM spec 2.2.2: WME Parameter Element, p.13.
 */
typedef union _ECW {
	u8 charData;
	struct {
		u8 ECWmin:4;
		u8 ECWmax:4;
	} f;	/* Field */
} ECW, *PECW;

/*
 * ACI/AIFSN Field. Ref: WMM spec 2.2.2: WME Parameter Element, p.12.
 */
typedef union _ACI_AIFSN {
	u8 charData;

	struct {
		u8 AIFSN:4;
		u8 ACM:1;
		u8 ACI:2;
		u8 Reserved:1;
	} f;	/* Field */
} ACI_AIFSN, *PACI_AIFSN;

/*
 * AC Parameters Record Format.
 * Ref: WMM spec 2.2.2: WME Parameter Element, p.12.
 */
typedef union _AC_PARAM {
	u32 longData;
	u8 charData[4];

	struct {
		ACI_AIFSN AciAifsn;
		ECW Ecw;
		u16 TXOPLimit;
	} f;	/* Field */
} AC_PARAM, *PAC_PARAM;

struct buffer {
	struct buffer *next;
	u32 *buf;
	dma_addr_t dma;
};

/* YJ,modified,080828. */
struct stats {
	unsigned long txrdu;
	unsigned long rxrdu;
	unsigned long rxnolast;
	unsigned long rxnodata;
	unsigned long rxnopointer;
	unsigned long txnperr;
	unsigned long txresumed;
	unsigned long rxerr;
	unsigned long rxoverflow;
	unsigned long rxint;
	unsigned long txbkpokint;
	unsigned long txbepoking;
	unsigned long txbkperr;
	unsigned long txbeperr;
	unsigned long txnpokint;
	unsigned long txhpokint;
	unsigned long txhperr;
	unsigned long ints;
	unsigned long shints;
	unsigned long txoverflow;
	unsigned long rxdmafail;
	unsigned long txbeacon;
	unsigned long txbeaconerr;
	unsigned long txlpokint;
	unsigned long txlperr;
	unsigned long txretry; /* retry number tony 20060601 */
	unsigned long rxcrcerrmin; /* crc error (0-500) */
	unsigned long rxcrcerrmid; /* crc error (500-1000) */
	unsigned long rxcrcerrmax; /* crc error (>1000) */
	unsigned long rxicverr; /* ICV error */
};

#define MAX_LD_SLOT_NUM 10
#define KEEP_ALIVE_INTERVAL 20 /* in seconds. */
#define CHECK_FOR_HANG_PERIOD 2 /* be equal to watchdog check time. */
#define DEFAULT_KEEP_ALIVE_LEVEL 1
#define DEFAULT_SLOT_NUM 2
#define POWER_PROFILE_AC 0
#define POWER_PROFILE_BATTERY 1

struct link_detect_t {
	u32 rx_frame_num[MAX_LD_SLOT_NUM]; /* number of Rx Frame.
					    * CheckForHang_period  to determine
					    * link status.
					    */
	u16 slot_num; /* number of CheckForHang period to determine link status,
		       * default is 2.
		       */
	u16 slot_index;
	u32 num_tx_ok_in_period; /* number of packet transmitted during
				  * CheckForHang.
				  */
	u32 num_rx_ok_in_period; /* number of packet received during
				  * CheckForHang.
				  */
	u8 idle_count; /* (KEEP_ALIVE_INTERVAL / CHECK_FOR_HANG_PERIOD) */
	u32 last_num_tx_unicast;
	u32 last_num_rx_unicast;

	bool b_busy_traffic; /* when it is set to 1, UI cann't scan at will. */
};

/* YJ,modified,080828,end */

/* by amy for led
 * ==========================================================================
 * LED customization.
 * ==========================================================================
 */
enum led_strategy_8185 {
	SW_LED_MODE0,
	SW_LED_MODE1,
	HW_LED, /* HW control 2 LEDs, LED0 and LED1 (there are 4 different
		 * control modes). */
};

enum rt_rf_power_state {
	RF_ON,
	RF_SLEEP,
	RF_OFF
};

enum _ReasonCode {
	unspec_reason = 0x1,
	auth_not_valid = 0x2,
	deauth_lv_ss = 0x3,
	inactivity = 0x4,
	ap_overload = 0x5,
	class2_err = 0x6,
	class3_err = 0x7,
	disas_lv_ss = 0x8,
	asoc_not_auth = 0x9,

	/* ----MIC_CHECK */
	mic_failure = 0xe,
	/* ----END MIC_CHECK */

	/* Reason code defined in 802.11i D10.0 p.28. */
	invalid_IE = 0x0d,
	four_way_tmout = 0x0f,
	two_way_tmout = 0x10,
	IE_dismatch = 0x11,
	invalid_Gcipher	= 0x12,
	invalid_Pcipher	= 0x13,
	invalid_AKMP = 0x14,
	unsup_RSNIEver = 0x15,
	invalid_RSNIE = 0x16,
	auth_802_1x_fail = 0x17,
	ciper_reject = 0x18,

	/* Reason code defined in 7.3.1.7, 802.1e D13.0, p.42. Added by Annie,
	 * 2005-11-15.
	 */
	QoS_unspec = 0x20, /* 32 */
	QAP_bandwidth = 0x21, /* 33 */
	poor_condition = 0x22, /* 34 */
	no_facility = 0x23, /* 35 */
	/* Where is 36??? */
	req_declined = 0x25, /* 37 */
	invalid_param = 0x26, /* 38 */
	req_not_honored = 0x27, /* 39 */
	TS_not_created = 0x2F, /* 47 */
	DL_not_allowed = 0x30, /* 48 */
	dest_not_exist = 0x31, /* 49 */
	dest_not_QSTA = 0x32, /* 50 */
};

enum rt_ps_mode {
	ACTIVE, /* Active/Continuous access. */
	MAX_PS,	/* Max power save mode. */
	FAST_PS /* Fast power save mode. */
};

/* by amy for power save. */
struct r8180_priv {
	struct pci_dev *pdev;

	short epromtype;
	int irq;
	struct ieee80211_device *ieee80211;

	short plcp_preamble_mode; /* 0:auto 1:short 2:long */

	spinlock_t irq_th_lock;
	spinlock_t tx_lock;
	spinlock_t ps_lock;
	spinlock_t rf_ps_lock;

	u16 irq_mask;
	short irq_enabled;
	struct net_device *dev;
	short chan;
	short sens;
	short max_sens;
	u8 chtxpwr[15]; /* channels from 1 to 14, 0 not used. */
	u8 chtxpwr_ofdm[15]; /* channels from 1 to 14, 0 not used. */
	u8 channel_plan;  /* it's the channel plan index. */
	short up;
	short crcmon; /* if 1 allow bad crc frame reception in monitor mode. */

	struct timer_list scan_timer;
	spinlock_t scan_lock;
	u8 active_probe;
	struct semaphore wx_sem;
	short hw_wep;

	short digphy;
	short antb;
	short diversity;
	u32 key0[4];
	short (*rf_set_sens)(struct net_device *dev, short sens);
	void (*rf_set_chan)(struct net_device *dev, short ch);
	void (*rf_close)(struct net_device *dev);
	void (*rf_init)(struct net_device *dev);
	void (*rf_sleep)(struct net_device *dev);
	void (*rf_wakeup)(struct net_device *dev);
	/* short rate; */
	short promisc;
	/* stats */
	struct stats stats;
	struct link_detect_t link_detect; /* YJ,add,080828 */
	struct iw_statistics wstats;

	/* RX stuff. */
	u32 *rxring;
	u32 *rxringtail;
	dma_addr_t rxringdma;
	struct buffer *rxbuffer;
	struct buffer *rxbufferhead;
	int rxringcount;
	u16 rxbuffersize;

	struct sk_buff *rx_skb;

	short rx_skb_complete;

	u32 rx_prevlen;

	u32 *txmapring;
	u32 *txbkpring;
	u32 *txbepring;
	u32 *txvipring;
	u32 *txvopring;
	u32 *txhpring;
	dma_addr_t txmapringdma;
	dma_addr_t txbkpringdma;
	dma_addr_t txbepringdma;
	dma_addr_t txvipringdma;
	dma_addr_t txvopringdma;
	dma_addr_t txhpringdma;
	u32 *txmapringtail;
	u32 *txbkpringtail;
	u32 *txbepringtail;
	u32 *txvipringtail;
	u32 *txvopringtail;
	u32 *txhpringtail;
	u32 *txmapringhead;
	u32 *txbkpringhead;
	u32 *txbepringhead;
	u32 *txvipringhead;
	u32 *txvopringhead;
	u32 *txhpringhead;
	struct buffer *txmapbufs;
	struct buffer *txbkpbufs;
	struct buffer *txbepbufs;
	struct buffer *txvipbufs;
	struct buffer *txvopbufs;
	struct buffer *txhpbufs;
	struct buffer *txmapbufstail;
	struct buffer *txbkpbufstail;
	struct buffer *txbepbufstail;
	struct buffer *txvipbufstail;
	struct buffer *txvopbufstail;
	struct buffer *txhpbufstail;

	int txringcount;
	int txbuffsize;
	struct tasklet_struct irq_rx_tasklet;
	u8 dma_poll_mask;

	/* adhoc/master mode stuff. */
	u32 *txbeaconringtail;
	dma_addr_t txbeaconringdma;
	u32 *txbeaconring;
	int txbeaconcount;
	struct buffer *txbeaconbufs;
	struct buffer *txbeaconbufstail;

	u8 retry_data;
	u8 retry_rts;
	u16 rts;

	/* by amy for led. */
	enum led_strategy_8185 led_strategy;
	/* by amy for led. */

	/* by amy for power save. */
	struct timer_list watch_dog_timer;
	bool bInactivePs;
	bool bSwRfProcessing;
	enum rt_rf_power_state eInactivePowerState;
	enum rt_rf_power_state eRFPowerState;
	u32 RfOffReason;
	bool RFChangeInProgress;
	bool SetRFPowerStateInProgress;
	u8 RFProgType;
	bool bLeisurePs;
	enum rt_ps_mode dot11PowerSaveMode;
	u8 TxPollingTimes;

	bool bApBufOurFrame; /* TRUE if AP buffer our unicast data , we will
			      * keep eAwake until receive data or timeout.
			      */
	u8 WaitBufDataBcnCount;
	u8 WaitBufDataTimeOut;

	/* by amy for power save. */
	/* by amy for antenna. */
	u8 EEPROMSwAntennaDiversity;
	bool EEPROMDefaultAntenna1;
	u8 RegSwAntennaDiversityMechanism;
	bool bSwAntennaDiverity;
	u8 RegDefaultAntenna;
	bool bDefaultAntenna1;
	u8 SignalStrength;
	long Stats_SignalStrength;
	long LastSignalStrengthInPercent; /* In percentage, used for smoothing,
					   * e.g. Moving Average.
					   */
	u8 SignalQuality; /* in 0-100 index. */
	long Stats_SignalQuality;
	long RecvSignalPower; /* in dBm. */
	long Stats_RecvSignalPower;
	u8 LastRxPktAntenna; /* +by amy 080312 Antenna which received the lasted
			      * packet. 0: Aux, 1:Main. Added by Roger,
			      * 2008.01.25.
			      */
	u32 AdRxOkCnt;
	long AdRxSignalStrength;
	u8 CurrAntennaIndex; /* Index to current Antenna (both Tx and Rx). */
	u8 AdTickCount; /* Times of SwAntennaDiversityTimer happened. */
	u8 AdCheckPeriod; /* # of period SwAntennaDiversityTimer to check Rx
			   * signal strength for SW Antenna Diversity.
			   */
	u8 AdMinCheckPeriod; /* Min value of AdCheckPeriod. */
	u8 AdMaxCheckPeriod; /* Max value of AdCheckPeriod. */
	long AdRxSsThreshold; /* Signal strength threshold to switch antenna. */
	long AdMaxRxSsThreshold; /* Max value of AdRxSsThreshold. */
	bool bAdSwitchedChecking; /* TRUE if we shall shall check Rx signal
				   * strength for last time switching antenna.
				   */
	long AdRxSsBeforeSwitched; /* Rx signal strength before we switched
				    * antenna.
				    */
	struct timer_list SwAntennaDiversityTimer;
	/* by amy for antenna {by amy 080312 */

	/* Crystal calibration. Added by Roger, 2007.12.11. */

	bool bXtalCalibration; /* Crystal calibration.*/
	u8 XtalCal_Xin; /* Crystal calibration for Xin. 0~7.5pF */
	u8 XtalCal_Xout; /* Crystal calibration for Xout. 0~7.5pF */

	/* Tx power tracking with thermal meter indication.
	 * Added by Roger, 2007.12.11.
	 */

	bool bTxPowerTrack; /* Tx Power tracking. */
	u8 ThermalMeter; /* Thermal meter reference indication. */

	/* Dynamic Initial Gain Adjustment Mechanism. Added by Bruce,
	 * 2007-02-14.
	 */
	bool bDigMechanism; /* TRUE if DIG is enabled, FALSE ow. */
	bool bRegHighPowerMechanism; /* For High Power Mechanism. 061010,
				      * by rcnjko.
				      */
	u32 FalseAlarmRegValue;
	u8 RegDigOfdmFaUpTh; /* Upper threshold of OFDM false alarm, which is
			      * used in DIG.
			      */
	u8 DIG_NumberFallbackVote;
	u8 DIG_NumberUpgradeVote;
	/* For HW antenna diversity, added by Roger, 2008.01.30. */
	u32 AdMainAntennaRxOkCnt; /* Main antenna Rx OK count. */
	u32 AdAuxAntennaRxOkCnt; /* Aux antenna Rx OK count. */
	bool bHWAdSwitched; /* TRUE if we has switched default antenna by HW
			     * evaluation.
			     */
	/* RF High Power upper/lower threshold. */
	u8 RegHiPwrUpperTh;
	u8 RegHiPwrLowerTh;
	/* RF RSSI High Power upper/lower Threshold. */
	u8 RegRSSIHiPwrUpperTh;
	u8 RegRSSIHiPwrLowerTh;
	/* Current CCK RSSI value to determine CCK high power, asked by SD3 DZ,
	 * by Bruce, 2007-04-12.
	 */
	u8 CurCCKRSSI;
	bool bCurCCKPkt;
	/* High Power Mechanism. Added by amy, 080312. */
	bool bToUpdateTxPwr;
	long UndecoratedSmoothedSS;
	long UndecoratedSmoothedRxPower;
	u8 RSSI;
	char RxPower;
	u8 InitialGain;
	/* For adjust Dig Threshold during Legacy/Leisure Power Save Mode. */
	u32 DozePeriodInPast2Sec;
	/* Don't access BB/RF under disable PLL situation. */
	u8 InitialGainBackUp;
	u8 RegBModeGainStage;
	/* by amy for rate adaptive */
	struct timer_list rateadapter_timer;
	u32 RateAdaptivePeriod;
	bool bEnhanceTxPwr;
	bool bUpdateARFR;
	int ForcedDataRate; /* Force Data Rate. 0: Auto, 0x02: 1M ~ 0x6C: 54M.)
			     */
	u32 NumTxUnicast; /* YJ,add,080828,for keep alive. */
	u8 keepAliveLevel; /*YJ,add,080828,for KeepAlive. */
	unsigned long NumTxOkTotal;
	u16 LastRetryCnt;
	u16 LastRetryRate;
	unsigned long LastTxokCnt;
	unsigned long LastRxokCnt;
	u16 CurrRetryCnt;
	unsigned long LastTxOKBytes;
	unsigned long NumTxOkBytesTotal;
	u8 LastFailTxRate;
	long LastFailTxRateSS;
	u8 FailTxRateCount;
	u32 LastTxThroughput;
	/* for up rate. */
	unsigned short bTryuping;
	u8 CurrTxRate; /* the rate before up. */
	u16 CurrRetryRate;
	u16 TryupingCount;
	u8 TryDownCountLowData;
	u8 TryupingCountNoData;

	u8 CurrentOperaRate;
	struct work_struct reset_wq;
	struct work_struct watch_dog_wq;
	short ack_tx_to_ieee;

	u8 dma_poll_stop_mask;

	u16 ShortRetryLimit;
	u16 LongRetryLimit;
	u16 EarlyRxThreshold;
	u32 TransmitConfig;
	u32 ReceiveConfig;
	u32 IntrMask;

	struct chnl_access_setting ChannelAccessSetting;
};

#define MANAGE_PRIORITY 0
#define BK_PRIORITY 1
#define BE_PRIORITY 2
#define VI_PRIORITY 3
#define VO_PRIORITY 4
#define HI_PRIORITY 5
#define BEACON_PRIORITY 6

#define LOW_PRIORITY VI_PRIORITY
#define NORM_PRIORITY VO_PRIORITY
/* AC2Queue mapping. */
#define AC2Q(_ac) (((_ac) == WME_AC_VO) ? VO_PRIORITY : \
		((_ac) == WME_AC_VI) ? VI_PRIORITY : \
		((_ac) == WME_AC_BK) ? BK_PRIORITY : \
		BE_PRIORITY)

short rtl8180_tx(struct net_device *dev, u8 *skbuf, int len, int priority,
		 bool morefrag, short fragdesc, int rate);

u8 read_nic_byte(struct net_device *dev, int x);
u32 read_nic_dword(struct net_device *dev, int x);
u16 read_nic_word(struct net_device *dev, int x);
void write_nic_byte(struct net_device *dev, int x, u8 y);
void write_nic_word(struct net_device *dev, int x, u16 y);
void write_nic_dword(struct net_device *dev, int x, u32 y);
void force_pci_posting(struct net_device *dev);

void rtl8180_rtx_disable(struct net_device *);
void rtl8180_set_anaparam(struct net_device *dev, u32 a);
void rtl8185_set_anaparam2(struct net_device *dev, u32 a);
void rtl8180_set_hw_wep(struct net_device *dev);
void rtl8180_no_hw_wep(struct net_device *dev);
void rtl8180_update_msr(struct net_device *dev);
void rtl8180_beacon_tx_disable(struct net_device *dev);
void rtl8180_beacon_rx_disable(struct net_device *dev);
int rtl8180_down(struct net_device *dev);
int rtl8180_up(struct net_device *dev);
void rtl8180_commit(struct net_device *dev);
void rtl8180_set_chan(struct net_device *dev, short ch);
void write_phy(struct net_device *dev, u8 adr, u8 data);
void write_phy_cck(struct net_device *dev, u8 adr, u32 data);
void write_phy_ofdm(struct net_device *dev, u8 adr, u32 data);
void rtl8185_tx_antenna(struct net_device *dev, u8 ant);
void rtl8185_rf_pins_enable(struct net_device *dev);
void IPSEnter(struct net_device *dev);
void IPSLeave(struct net_device *dev);
int get_curr_tx_free_desc(struct net_device *dev, int priority);
void UpdateInitialGain(struct net_device *dev);
bool SetAntennaConfig87SE(struct net_device *dev, u8 DefaultAnt,
			  bool bAntDiversity);

void rtl8185b_adapter_start(struct net_device *dev);
void rtl8185b_rx_enable(struct net_device *dev);
void rtl8185b_tx_enable(struct net_device *dev);
void rtl8180_reset(struct net_device *dev);
void rtl8185b_irq_enable(struct net_device *dev);
void fix_rx_fifo(struct net_device *dev);
void fix_tx_fifo(struct net_device *dev);
void rtl8225z2_SetTXPowerLevel(struct net_device *dev, short ch);
void rtl8180_rate_adapter(struct work_struct *work);
bool MgntActSet_RF_State(struct net_device *dev, enum rt_rf_power_state StateToSet,
			 u32 ChangeSource);

#endif

/* fun with the built-in ieee80211 stack... */
extern int ieee80211_crypto_init(void);
extern void ieee80211_crypto_deinit(void);
extern int ieee80211_crypto_tkip_init(void);
extern void ieee80211_crypto_tkip_exit(void);
extern int ieee80211_crypto_ccmp_init(void);
extern void ieee80211_crypto_ccmp_exit(void);
extern int ieee80211_crypto_wep_init(void);
extern void ieee80211_crypto_wep_exit(void);