summaryrefslogtreecommitdiff
path: root/drivers/staging/winbond/mto.c
blob: 560c0ab617d1e2b981555a9aa811857e32e65e33 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
/*
 * ============================================================================
 * 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);
	}
}