[deliverable/linux.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"
#include "mto.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;

/*
 * ===========================================================================
 * 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"
46234cc5	24	#include "mto.h"
66101de1	25
f9a4191c	26	/* Declare SQ3 to rate and fragmentation threshold table */
a31f7f5f	27	/* Declare fragmentation threshold table */
f9a4191c LL	28	#define MTO_MAX_FRAG_TH_LEVELS 5
f9a4191c LL	29	#define MTO_MAX_DATA_RATE_LEVELS 12
66101de1	30
f9a4191c LL	31	u16 MTO_Frag_Th_Tbl[MTO_MAX_FRAG_TH_LEVELS] = {
f9a4191c LL	32	256, 384, 512, 768, 1536
66101de1 PM	33	};
66101de1 PM	34
f9a4191c LL	35	/*
f9a4191c LL	36	* Declare data rate table:
60ebf60b	37	* The following table will be changed at anytime if the operation rate
f9a4191c LL	38	* supported by AP don't match the table
f9a4191c LL	39	*/
a22517fe	40	static u8 MTO_Data_Rate_Tbl[MTO_MAX_DATA_RATE_LEVELS] = {
f9a4191c	41	2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108
66101de1 PM	42	};
66101de1 PM	43
f9a4191c LL	44	/* this record the retry rate at different data rate */
f9a4191c LL	45	static int retryrate_rec[MTO_MAX_DATA_RATE_LEVELS];
66101de1	46
f9a4191c	47	static u8 boSparseTxTraffic;
66101de1	48
f9a4191c LL	49	/*
	50	* ===========================================================================
	51	* MTO_Init --
	52	*
	53	* Description:
	54	* Initialize MTO parameters.
	55	*
	56	* This function should be invoked during system initialization.
	57	*
	58	* Arguments:
	59	* adapter - The pointer to the Miniport adapter Context
	60	* ===========================================================================
	61	*/
57a94443	62	void MTO_Init(struct wbsoft_priv *adapter)
66101de1	63	{
f9a4191c LL	64	int i;
	65
	66	MTO_PREAMBLE_TYPE() = MTO_PREAMBLE_SHORT; /* for test */
	67
	68	MTO_CNT_ANT(0) = 0;
	69	MTO_CNT_ANT(1) = 0;
	70	MTO_SQ_ANT(0) = 0;
	71	MTO_SQ_ANT(1) = 0;
	72
	73	MTO_AGING_TIMEOUT() = 0;
	74
	75	/* The following parameters should be initialized to the values set by user */
	76	MTO_RATE_LEVEL() = 0;
	77	MTO_FRAG_TH_LEVEL() = 4;
	78	MTO_RTS_THRESHOLD() = MTO_FRAG_TH() + 1;
	79	MTO_RTS_THRESHOLD_SETUP() = MTO_FRAG_TH() + 1;
	80	MTO_RATE_CHANGE_ENABLE() = 1;
	81	MTO_FRAG_CHANGE_ENABLE() = 0;
	82	MTO_POWER_CHANGE_ENABLE() = 1;
	83	MTO_PREAMBLE_CHANGE_ENABLE() = 1;
	84	MTO_RTS_CHANGE_ENABLE() = 0;
	85
	86	for (i = 0; i < MTO_MAX_DATA_RATE_LEVELS; i++)
	87	retryrate_rec[i] = 5;
66101de1 PM	88
66101de1 PM	89	MTO_TXFLOWCOUNT() = 0;
f9a4191c LL	90	/* --------- DTO threshold parameters ------------- */
	91	MTOPARA_PERIODIC_CHECK_CYCLE() = 10;
	92	MTOPARA_RSSI_TH_FOR_ANTDIV() = 10;
	93	MTOPARA_TXCOUNT_TH_FOR_CALC_RATE() = 50;
	94	MTOPARA_TXRATE_INC_TH() = 10;
	95	MTOPARA_TXRATE_DEC_TH() = 30;
	96	MTOPARA_TXRATE_EQ_TH() = 40;
	97	MTOPARA_TXRATE_BACKOFF() = 12;
	98	MTOPARA_TXRETRYRATE_REDUCE() = 6;
	99	if (MTO_TXPOWER_FROM_EEPROM == 0xff) {
	100	switch (MTO_HAL()->phy_type) {
	101	case RF_AIROHA_2230:
	102	case RF_AIROHA_2230S:
	103	MTOPARA_TXPOWER_INDEX() = 46; /* MAX-8 @@ Only for AL 2230 */
	104	break;
	105	case RF_AIROHA_7230:
	106	MTOPARA_TXPOWER_INDEX() = 49;
	107	break;
	108	case RF_WB_242:
	109	MTOPARA_TXPOWER_INDEX() = 10;
	110	break;
	111	case RF_WB_242_1:
	112	MTOPARA_TXPOWER_INDEX() = 24;
	113	break;
66101de1	114	}
f9a4191c	115	} else { /* follow the setting from EEPROM */
66101de1	116	MTOPARA_TXPOWER_INDEX() = MTO_TXPOWER_FROM_EEPROM;
f9a4191c LL	117	}
	118	RFSynthesizer_SetPowerIndex(MTO_HAL(), (u8) MTOPARA_TXPOWER_INDEX());
	119	/* ------------------------------------------------ */
66101de1	120
f9a4191c	121	/* For RSSI turning -- Cancel load from EEPROM */
66101de1 PM	122	MTO_DATA().RSSI_high = -41;
	123	MTO_DATA().RSSI_low = -60;
	124	}
	125
f9a4191c LL	126	/* ===========================================================================
	127	* Description:
	128	* If we enable DTO, we will ignore the tx count with different tx rate
	129	* from DTO rate. This is because when we adjust DTO tx rate, there could
	130	* be some packets in the tx queue with previous tx rate
	131	*/
	132
57a94443	133	void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 tx_rate, u8 index)
66101de1 PM	134	{
66101de1 PM	135	MTO_TXFLOWCOUNT()++;
f9a4191c LL	136	if ((MTO_ENABLE == 1) && (MTO_RATE_CHANGE_ENABLE() == 1)) {
	137	if (tx_rate == MTO_DATA_RATE()) {
	138	if (index == 0) {
66101de1 PM	139	if (boSparseTxTraffic)
	140	MTO_HAL()->dto_tx_frag_count += MTOPARA_PERIODIC_CHECK_CYCLE();
	141	else
	142	MTO_HAL()->dto_tx_frag_count += 1;
f9a4191c LL	143	} else {
f9a4191c LL	144	if (index < 8) {
66101de1	145	MTO_HAL()->dto_tx_retry_count += index;
f9a4191c LL	146	MTO_HAL()->dto_tx_frag_count += (index + 1);
f9a4191c LL	147	} else {
66101de1 PM	148	MTO_HAL()->dto_tx_retry_count += 7;
	149	MTO_HAL()->dto_tx_frag_count += 7;
	150	}
	151	}
f9a4191c LL	152	} else if (MTO_DATA_RATE() > 48 && tx_rate == 48) {
	153	/* for reducing data rate scheme, do not calculate different data rate. 3 is the reducing data rate at retry. */
	154	if (index < 3) {
66101de1	155	MTO_HAL()->dto_tx_retry_count += index;
f9a4191c LL	156	MTO_HAL()->dto_tx_frag_count += (index + 1);
f9a4191c LL	157	} else {
66101de1 PM	158	MTO_HAL()->dto_tx_retry_count += 3;
	159	MTO_HAL()->dto_tx_frag_count += 3;
	160	}
	161
	162	}
f9a4191c	163	} else {
66101de1	164	MTO_HAL()->dto_tx_retry_count += index;
f9a4191c	165	MTO_HAL()->dto_tx_frag_count += (index + 1);
66101de1	166	}
66101de1	167	}