[mirror_ubuntu-zesty-kernel.git] / drivers / staging / winbond / mto.c

/*
 * ============================================================================
 * MTO.C -
 *
 * Description:
 * MAC Throughput Optimization for W89C33 802.11g WLAN STA.
 *
 * The following MIB attributes or internal variables will be affected
 * while the MTO is being executed:
 *	dot11FragmentationThreshold,
 *	dot11RTSThreshold,
 *	transmission rate and PLCP preamble type,
 *	CCA mode,
 *	antenna diversity.
 *
 * Copyright (c) 2003 Winbond Electronics Corp. All rights reserved.
 * ============================================================================
 */

#include "sme_api.h"
#include "wbhal.h"
#include "wb35reg_f.h"
#include "core.h"

/* Declare SQ3 to rate and fragmentation threshold table */
/* Declare fragmentation threshold table */
#define MTO_MAX_FRAG_TH_LEVELS		5
#define MTO_MAX_DATA_RATE_LEVELS	12

u16 MTO_Frag_Th_Tbl[MTO_MAX_FRAG_TH_LEVELS] = {
	256, 384, 512, 768, 1536
};

/*
 * Declare data rate table:
 * The following table will be changed at anytime if the operation rate
 * supported by AP don't match the table
 */
static u8 MTO_Data_Rate_Tbl[MTO_MAX_DATA_RATE_LEVELS] = {
	2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108
};

/* this record the retry rate at different data rate */
static int retryrate_rec[MTO_MAX_DATA_RATE_LEVELS];

static u8 boSparseTxTraffic;

void MTO_Init(struct wbsoft_priv *adapter);
void TxRateReductionCtrl(struct wbsoft_priv *adapter);
void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 t0, u8 index);
void MTO_TxFailed(struct wbsoft_priv *adapter);
void hal_get_dto_para(struct wbsoft_priv *adapter, char *buffer);

/*
 * ===========================================================================
 * MTO_Init --
 *
 *  Description:
 *    Initialize MTO parameters.
 *
 *    This function should be invoked during system initialization.
 *
 *  Arguments:
 *    adapter      - The pointer to the Miniport adapter Context
 * ===========================================================================
 */
void MTO_Init(struct wbsoft_priv *adapter)
{
	int i;

	MTO_PREAMBLE_TYPE() = MTO_PREAMBLE_SHORT;   /* for test */

	MTO_CNT_ANT(0)			= 0;
	MTO_CNT_ANT(1)			= 0;
	MTO_SQ_ANT(0)			= 0;
	MTO_SQ_ANT(1)			= 0;

	MTO_AGING_TIMEOUT()		= 0;

	/* The following parameters should be initialized to the values set by user */
	MTO_RATE_LEVEL()		= 0;
	MTO_FRAG_TH_LEVEL()		= 4;
	MTO_RTS_THRESHOLD()		= MTO_FRAG_TH() + 1;
	MTO_RTS_THRESHOLD_SETUP()	= MTO_FRAG_TH() + 1;
	MTO_RATE_CHANGE_ENABLE()	= 1;
	MTO_FRAG_CHANGE_ENABLE()	= 0;
	MTO_POWER_CHANGE_ENABLE()	= 1;
	MTO_PREAMBLE_CHANGE_ENABLE()	= 1;
	MTO_RTS_CHANGE_ENABLE()		= 0;

	for (i = 0; i < MTO_MAX_DATA_RATE_LEVELS; i++)
		retryrate_rec[i] = 5;

	MTO_TXFLOWCOUNT() = 0;
	/* --------- DTO threshold parameters ------------- */
	MTOPARA_PERIODIC_CHECK_CYCLE()		= 10;
	MTOPARA_RSSI_TH_FOR_ANTDIV()		= 10;
	MTOPARA_TXCOUNT_TH_FOR_CALC_RATE()	= 50;
	MTOPARA_TXRATE_INC_TH()			= 10;
	MTOPARA_TXRATE_DEC_TH()			= 30;
	MTOPARA_TXRATE_EQ_TH()			= 40;
	MTOPARA_TXRATE_BACKOFF()		= 12;
	MTOPARA_TXRETRYRATE_REDUCE()		= 6;
	if (MTO_TXPOWER_FROM_EEPROM == 0xff) {
		switch (MTO_HAL()->phy_type) {
		case RF_AIROHA_2230:
		case RF_AIROHA_2230S:
			MTOPARA_TXPOWER_INDEX() = 46; /* MAX-8 @@ Only for AL 2230 */
			break;
		case RF_AIROHA_7230:
			MTOPARA_TXPOWER_INDEX() = 49;
			break;
		case RF_WB_242:
			MTOPARA_TXPOWER_INDEX() = 10;
			break;
		case RF_WB_242_1:
			MTOPARA_TXPOWER_INDEX() = 24;
			break;
		}
	} else { /* follow the setting from EEPROM */
		MTOPARA_TXPOWER_INDEX() = MTO_TXPOWER_FROM_EEPROM;
	}
	RFSynthesizer_SetPowerIndex(MTO_HAL(), (u8) MTOPARA_TXPOWER_INDEX());
	/* ------------------------------------------------ */

	/* For RSSI turning -- Cancel load from EEPROM */
	MTO_DATA().RSSI_high = -41;
	MTO_DATA().RSSI_low = -60;
}

/* ===========================================================================
 * Description:
 *	If we enable DTO, we will ignore the tx count with different tx rate
 *	from DTO rate. This is because when we adjust DTO tx rate, there could
 *	be some packets in the tx queue with previous tx rate
 */

void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 tx_rate, u8 index)
{
	MTO_TXFLOWCOUNT()++;
	if ((MTO_ENABLE == 1) && (MTO_RATE_CHANGE_ENABLE() == 1)) {
		if (tx_rate == MTO_DATA_RATE()) {
			if (index == 0) {
				if (boSparseTxTraffic)
					MTO_HAL()->dto_tx_frag_count += MTOPARA_PERIODIC_CHECK_CYCLE();
				else
					MTO_HAL()->dto_tx_frag_count += 1;
			} else {
				if (index < 8) {
					MTO_HAL()->dto_tx_retry_count += index;
					MTO_HAL()->dto_tx_frag_count += (index + 1);
				} else {
					MTO_HAL()->dto_tx_retry_count += 7;
					MTO_HAL()->dto_tx_frag_count += 7;
				}
			}
		} else if (MTO_DATA_RATE() > 48 && tx_rate == 48) {
			/* for reducing data rate scheme, do not calculate different data rate. 3 is the reducing data rate at retry. */
			if (index < 3) {
				MTO_HAL()->dto_tx_retry_count += index;
				MTO_HAL()->dto_tx_frag_count += (index + 1);
			} else {
				MTO_HAL()->dto_tx_retry_count += 3;
				MTO_HAL()->dto_tx_frag_count += 3;
			}

		}
	} else {
		MTO_HAL()->dto_tx_retry_count += index;
		MTO_HAL()->dto_tx_frag_count += (index + 1);
	}
}
Commit	Line	Data
f9a4191c LL	1	/*
	2	* ============================================================================
	3	* MTO.C -
	4	*
	5	* Description:
	6	* MAC Throughput Optimization for W89C33 802.11g WLAN STA.
	7	*
	8	* The following MIB attributes or internal variables will be affected
	9	* while the MTO is being executed:
	10	* dot11FragmentationThreshold,
	11	* dot11RTSThreshold,
	12	* transmission rate and PLCP preamble type,
	13	* CCA mode,
	14	* antenna diversity.
	15	*
	16	* Copyright (c) 2003 Winbond Electronics Corp. All rights reserved.
	17	* ============================================================================
	18	*/
	19
80aba536	20	#include "sme_api.h"
b5ef0761	21	#include "wbhal.h"
72ca8819 PE	22	#include "wb35reg_f.h"
72ca8819 PE	23	#include "core.h"
66101de1	24
f9a4191c	25	/* Declare SQ3 to rate and fragmentation threshold table */
a31f7f5f	26	/* Declare fragmentation threshold table */
f9a4191c LL	27	#define MTO_MAX_FRAG_TH_LEVELS 5
f9a4191c LL	28	#define MTO_MAX_DATA_RATE_LEVELS 12
66101de1	29
f9a4191c LL	30	u16 MTO_Frag_Th_Tbl[MTO_MAX_FRAG_TH_LEVELS] = {
f9a4191c LL	31	256, 384, 512, 768, 1536
66101de1 PM	32	};
66101de1 PM	33
f9a4191c LL	34	/*
f9a4191c LL	35	* Declare data rate table:
60ebf60b	36	* The following table will be changed at anytime if the operation rate
f9a4191c LL	37	* supported by AP don't match the table
f9a4191c LL	38	*/
a22517fe	39	static u8 MTO_Data_Rate_Tbl[MTO_MAX_DATA_RATE_LEVELS] = {
f9a4191c	40	2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108
66101de1 PM	41	};
66101de1 PM	42
f9a4191c LL	43	/* this record the retry rate at different data rate */
f9a4191c LL	44	static int retryrate_rec[MTO_MAX_DATA_RATE_LEVELS];
66101de1	45
f9a4191c	46	static u8 boSparseTxTraffic;
66101de1	47
57a94443 PE	48	void MTO_Init(struct wbsoft_priv *adapter);
57a94443 PE	49	void TxRateReductionCtrl(struct wbsoft_priv *adapter);
57a94443 PE	50	void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 t0, u8 index);
	51	void MTO_TxFailed(struct wbsoft_priv *adapter);
	52	void hal_get_dto_para(struct wbsoft_priv adapter, char buffer);
66101de1	53
f9a4191c LL	54	/*
	55	* ===========================================================================
	56	* MTO_Init --
	57	*
	58	* Description:
	59	* Initialize MTO parameters.
	60	*
	61	* This function should be invoked during system initialization.
	62	*
	63	* Arguments:
	64	* adapter - The pointer to the Miniport adapter Context
	65	* ===========================================================================
	66	*/
57a94443	67	void MTO_Init(struct wbsoft_priv *adapter)
66101de1	68	{
f9a4191c LL	69	int i;
	70
	71	MTO_PREAMBLE_TYPE() = MTO_PREAMBLE_SHORT; /* for test */
	72
	73	MTO_CNT_ANT(0) = 0;
	74	MTO_CNT_ANT(1) = 0;
	75	MTO_SQ_ANT(0) = 0;
	76	MTO_SQ_ANT(1) = 0;
	77
	78	MTO_AGING_TIMEOUT() = 0;
	79
	80	/* The following parameters should be initialized to the values set by user */
	81	MTO_RATE_LEVEL() = 0;
	82	MTO_FRAG_TH_LEVEL() = 4;
	83	MTO_RTS_THRESHOLD() = MTO_FRAG_TH() + 1;
	84	MTO_RTS_THRESHOLD_SETUP() = MTO_FRAG_TH() + 1;
	85	MTO_RATE_CHANGE_ENABLE() = 1;
	86	MTO_FRAG_CHANGE_ENABLE() = 0;
	87	MTO_POWER_CHANGE_ENABLE() = 1;
	88	MTO_PREAMBLE_CHANGE_ENABLE() = 1;
	89	MTO_RTS_CHANGE_ENABLE() = 0;
	90
	91	for (i = 0; i < MTO_MAX_DATA_RATE_LEVELS; i++)
	92	retryrate_rec[i] = 5;
66101de1 PM	93
66101de1 PM	94	MTO_TXFLOWCOUNT() = 0;
f9a4191c LL	95	/* --------- DTO threshold parameters ------------- */
	96	MTOPARA_PERIODIC_CHECK_CYCLE() = 10;
	97	MTOPARA_RSSI_TH_FOR_ANTDIV() = 10;
	98	MTOPARA_TXCOUNT_TH_FOR_CALC_RATE() = 50;
	99	MTOPARA_TXRATE_INC_TH() = 10;
	100	MTOPARA_TXRATE_DEC_TH() = 30;
	101	MTOPARA_TXRATE_EQ_TH() = 40;
	102	MTOPARA_TXRATE_BACKOFF() = 12;
	103	MTOPARA_TXRETRYRATE_REDUCE() = 6;
	104	if (MTO_TXPOWER_FROM_EEPROM == 0xff) {
	105	switch (MTO_HAL()->phy_type) {
	106	case RF_AIROHA_2230:
	107	case RF_AIROHA_2230S:
	108	MTOPARA_TXPOWER_INDEX() = 46; /* MAX-8 @@ Only for AL 2230 */
	109	break;
	110	case RF_AIROHA_7230:
	111	MTOPARA_TXPOWER_INDEX() = 49;
	112	break;
	113	case RF_WB_242:
	114	MTOPARA_TXPOWER_INDEX() = 10;
	115	break;
	116	case RF_WB_242_1:
	117	MTOPARA_TXPOWER_INDEX() = 24;
	118	break;
66101de1	119	}
f9a4191c	120	} else { /* follow the setting from EEPROM */
66101de1	121	MTOPARA_TXPOWER_INDEX() = MTO_TXPOWER_FROM_EEPROM;
f9a4191c LL	122	}
	123	RFSynthesizer_SetPowerIndex(MTO_HAL(), (u8) MTOPARA_TXPOWER_INDEX());
	124	/* ------------------------------------------------ */
66101de1	125
f9a4191c	126	/* For RSSI turning -- Cancel load from EEPROM */
66101de1 PM	127	MTO_DATA().RSSI_high = -41;
	128	MTO_DATA().RSSI_low = -60;
	129	}
	130
f9a4191c LL	131	/* ===========================================================================
	132	* Description:
	133	* If we enable DTO, we will ignore the tx count with different tx rate
	134	* from DTO rate. This is because when we adjust DTO tx rate, there could
	135	* be some packets in the tx queue with previous tx rate
	136	*/
	137
57a94443	138	void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 tx_rate, u8 index)
66101de1 PM	139	{
66101de1 PM	140	MTO_TXFLOWCOUNT()++;
f9a4191c LL	141	if ((MTO_ENABLE == 1) && (MTO_RATE_CHANGE_ENABLE() == 1)) {
	142	if (tx_rate == MTO_DATA_RATE()) {
	143	if (index == 0) {
66101de1 PM	144	if (boSparseTxTraffic)
	145	MTO_HAL()->dto_tx_frag_count += MTOPARA_PERIODIC_CHECK_CYCLE();
	146	else
	147	MTO_HAL()->dto_tx_frag_count += 1;
f9a4191c LL	148	} else {
f9a4191c LL	149	if (index < 8) {
66101de1	150	MTO_HAL()->dto_tx_retry_count += index;
f9a4191c LL	151	MTO_HAL()->dto_tx_frag_count += (index + 1);
f9a4191c LL	152	} else {
66101de1 PM	153	MTO_HAL()->dto_tx_retry_count += 7;
	154	MTO_HAL()->dto_tx_frag_count += 7;
	155	}
	156	}
f9a4191c LL	157	} else if (MTO_DATA_RATE() > 48 && tx_rate == 48) {
	158	/* for reducing data rate scheme, do not calculate different data rate. 3 is the reducing data rate at retry. */
	159	if (index < 3) {
66101de1	160	MTO_HAL()->dto_tx_retry_count += index;
f9a4191c LL	161	MTO_HAL()->dto_tx_frag_count += (index + 1);
f9a4191c LL	162	} else {
66101de1 PM	163	MTO_HAL()->dto_tx_retry_count += 3;
	164	MTO_HAL()->dto_tx_frag_count += 3;
	165	}
	166
	167	}
f9a4191c	168	} else {
66101de1	169	MTO_HAL()->dto_tx_retry_count += index;
f9a4191c	170	MTO_HAL()->dto_tx_frag_count += (index + 1);
66101de1	171	}
66101de1	172	}