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
20 #include "sme_api.h"
21 #include "wbhal.h"
22 #include "wb35reg_f.h"
23 #include "core.h"
24
25 /* Declare SQ3 to rate and fragmentation threshold table */
26 /* Declare fragmentation thresholds table */
27 #define MTO_MAX_FRAG_TH_LEVELS 5
28 #define MTO_MAX_DATA_RATE_LEVELS 12
29
30 u16 MTO_Frag_Th_Tbl[MTO_MAX_FRAG_TH_LEVELS] = {
31 256, 384, 512, 768, 1536
32 };
33
34 /*
35 * Declare data rate table:
36 * The following table will be changed at anytime if the opration rate
37 * supported by AP don't match the table
38 */
39 static u8 MTO_Data_Rate_Tbl[MTO_MAX_DATA_RATE_LEVELS] = {
40 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108
41 };
42
43 /* this record the retry rate at different data rate */
44 static int retryrate_rec[MTO_MAX_DATA_RATE_LEVELS];
45
46 static u8 boSparseTxTraffic;
47
48 void MTO_Init(struct wbsoft_priv *adapter);
49 void TxRateReductionCtrl(struct wbsoft_priv *adapter);
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);
53
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 */
MTO_Init(struct wbsoft_priv * adapter)67 void MTO_Init(struct wbsoft_priv *adapter)
68 {
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;
93
94 MTO_TXFLOWCOUNT() = 0;
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;
119 }
120 } else { /* follow the setting from EEPROM */
121 MTOPARA_TXPOWER_INDEX() = MTO_TXPOWER_FROM_EEPROM;
122 }
123 RFSynthesizer_SetPowerIndex(MTO_HAL(), (u8) MTOPARA_TXPOWER_INDEX());
124 /* ------------------------------------------------ */
125
126 /* For RSSI turning -- Cancel load from EEPROM */
127 MTO_DATA().RSSI_high = -41;
128 MTO_DATA().RSSI_low = -60;
129 }
130
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
MTO_SetTxCount(struct wbsoft_priv * adapter,u8 tx_rate,u8 index)138 void MTO_SetTxCount(struct wbsoft_priv *adapter, u8 tx_rate, u8 index)
139 {
140 MTO_TXFLOWCOUNT()++;
141 if ((MTO_ENABLE == 1) && (MTO_RATE_CHANGE_ENABLE() == 1)) {
142 if (tx_rate == MTO_DATA_RATE()) {
143 if (index == 0) {
144 if (boSparseTxTraffic)
145 MTO_HAL()->dto_tx_frag_count += MTOPARA_PERIODIC_CHECK_CYCLE();
146 else
147 MTO_HAL()->dto_tx_frag_count += 1;
148 } else {
149 if (index < 8) {
150 MTO_HAL()->dto_tx_retry_count += index;
151 MTO_HAL()->dto_tx_frag_count += (index + 1);
152 } else {
153 MTO_HAL()->dto_tx_retry_count += 7;
154 MTO_HAL()->dto_tx_frag_count += 7;
155 }
156 }
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) {
160 MTO_HAL()->dto_tx_retry_count += index;
161 MTO_HAL()->dto_tx_frag_count += (index + 1);
162 } else {
163 MTO_HAL()->dto_tx_retry_count += 3;
164 MTO_HAL()->dto_tx_frag_count += 3;
165 }
166
167 }
168 } else {
169 MTO_HAL()->dto_tx_retry_count += index;
170 MTO_HAL()->dto_tx_frag_count += (index + 1);
171 }
172 }
173