1 /******************************************************************************
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *****************************************************************************/
27 #ifndef __iwl_agn_rs_h__
28 #define __iwl_agn_rs_h__
32 struct iwl_rate_info
{
33 u8 plcp
; /* uCode API: IWL_RATE_6M_PLCP, etc. */
34 u8 plcp_siso
; /* uCode API: IWL_RATE_SISO_6M_PLCP, etc. */
35 u8 plcp_mimo2
; /* uCode API: IWL_RATE_MIMO2_6M_PLCP, etc. */
36 u8 plcp_mimo3
; /* uCode API: IWL_RATE_MIMO3_6M_PLCP, etc. */
37 u8 ieee
; /* MAC header: IWL_RATE_6M_IEEE, etc. */
38 u8 prev_ieee
; /* previous rate in IEEE speeds */
39 u8 next_ieee
; /* next rate in IEEE speeds */
40 u8 prev_rs
; /* previous rate used in rs algo */
41 u8 next_rs
; /* next rate used in rs algo */
42 u8 prev_rs_tgg
; /* previous rate used in TGG rs algo */
43 u8 next_rs_tgg
; /* next rate used in TGG rs algo */
47 * These serve as indexes into
48 * struct iwl_rate_info iwl_rates[IWL_RATE_COUNT];
51 IWL_RATE_1M_INDEX
= 0,
64 IWL_RATE_COUNT
, /*FIXME:RS:change to IWL_RATE_INDEX_COUNT,*/
65 IWL_RATE_INVM_INDEX
= IWL_RATE_COUNT
,
66 IWL_RATE_INVALID
= IWL_RATE_COUNT
,
70 IWL_FIRST_OFDM_RATE
= IWL_RATE_6M_INDEX
,
71 IWL_LAST_OFDM_RATE
= IWL_RATE_60M_INDEX
,
72 IWL_FIRST_CCK_RATE
= IWL_RATE_1M_INDEX
,
73 IWL_LAST_CCK_RATE
= IWL_RATE_11M_INDEX
,
76 /* #define vs. enum to keep from defaulting to 'large integer' */
77 #define IWL_RATE_6M_MASK (1 << IWL_RATE_6M_INDEX)
78 #define IWL_RATE_9M_MASK (1 << IWL_RATE_9M_INDEX)
79 #define IWL_RATE_12M_MASK (1 << IWL_RATE_12M_INDEX)
80 #define IWL_RATE_18M_MASK (1 << IWL_RATE_18M_INDEX)
81 #define IWL_RATE_24M_MASK (1 << IWL_RATE_24M_INDEX)
82 #define IWL_RATE_36M_MASK (1 << IWL_RATE_36M_INDEX)
83 #define IWL_RATE_48M_MASK (1 << IWL_RATE_48M_INDEX)
84 #define IWL_RATE_54M_MASK (1 << IWL_RATE_54M_INDEX)
85 #define IWL_RATE_60M_MASK (1 << IWL_RATE_60M_INDEX)
86 #define IWL_RATE_1M_MASK (1 << IWL_RATE_1M_INDEX)
87 #define IWL_RATE_2M_MASK (1 << IWL_RATE_2M_INDEX)
88 #define IWL_RATE_5M_MASK (1 << IWL_RATE_5M_INDEX)
89 #define IWL_RATE_11M_MASK (1 << IWL_RATE_11M_INDEX)
91 /* uCode API values for legacy bit rates, both OFDM and CCK */
93 IWL_RATE_6M_PLCP
= 13,
94 IWL_RATE_9M_PLCP
= 15,
95 IWL_RATE_12M_PLCP
= 5,
96 IWL_RATE_18M_PLCP
= 7,
97 IWL_RATE_24M_PLCP
= 9,
98 IWL_RATE_36M_PLCP
= 11,
99 IWL_RATE_48M_PLCP
= 1,
100 IWL_RATE_54M_PLCP
= 3,
101 IWL_RATE_60M_PLCP
= 3,/*FIXME:RS:should be removed*/
102 IWL_RATE_1M_PLCP
= 10,
103 IWL_RATE_2M_PLCP
= 20,
104 IWL_RATE_5M_PLCP
= 55,
105 IWL_RATE_11M_PLCP
= 110,
106 /*FIXME:RS:change to IWL_RATE_LEGACY_??M_PLCP */
107 /*FIXME:RS:add IWL_RATE_LEGACY_INVM_PLCP = 0,*/
110 /* uCode API values for OFDM high-throughput (HT) bit rates */
112 IWL_RATE_SISO_6M_PLCP
= 0,
113 IWL_RATE_SISO_12M_PLCP
= 1,
114 IWL_RATE_SISO_18M_PLCP
= 2,
115 IWL_RATE_SISO_24M_PLCP
= 3,
116 IWL_RATE_SISO_36M_PLCP
= 4,
117 IWL_RATE_SISO_48M_PLCP
= 5,
118 IWL_RATE_SISO_54M_PLCP
= 6,
119 IWL_RATE_SISO_60M_PLCP
= 7,
120 IWL_RATE_MIMO2_6M_PLCP
= 0x8,
121 IWL_RATE_MIMO2_12M_PLCP
= 0x9,
122 IWL_RATE_MIMO2_18M_PLCP
= 0xa,
123 IWL_RATE_MIMO2_24M_PLCP
= 0xb,
124 IWL_RATE_MIMO2_36M_PLCP
= 0xc,
125 IWL_RATE_MIMO2_48M_PLCP
= 0xd,
126 IWL_RATE_MIMO2_54M_PLCP
= 0xe,
127 IWL_RATE_MIMO2_60M_PLCP
= 0xf,
128 IWL_RATE_MIMO3_6M_PLCP
= 0x10,
129 IWL_RATE_MIMO3_12M_PLCP
= 0x11,
130 IWL_RATE_MIMO3_18M_PLCP
= 0x12,
131 IWL_RATE_MIMO3_24M_PLCP
= 0x13,
132 IWL_RATE_MIMO3_36M_PLCP
= 0x14,
133 IWL_RATE_MIMO3_48M_PLCP
= 0x15,
134 IWL_RATE_MIMO3_54M_PLCP
= 0x16,
135 IWL_RATE_MIMO3_60M_PLCP
= 0x17,
136 IWL_RATE_SISO_INVM_PLCP
,
137 IWL_RATE_MIMO2_INVM_PLCP
= IWL_RATE_SISO_INVM_PLCP
,
138 IWL_RATE_MIMO3_INVM_PLCP
= IWL_RATE_SISO_INVM_PLCP
,
141 /* MAC header values for bit rates */
143 IWL_RATE_6M_IEEE
= 12,
144 IWL_RATE_9M_IEEE
= 18,
145 IWL_RATE_12M_IEEE
= 24,
146 IWL_RATE_18M_IEEE
= 36,
147 IWL_RATE_24M_IEEE
= 48,
148 IWL_RATE_36M_IEEE
= 72,
149 IWL_RATE_48M_IEEE
= 96,
150 IWL_RATE_54M_IEEE
= 108,
151 IWL_RATE_60M_IEEE
= 120,
152 IWL_RATE_1M_IEEE
= 2,
153 IWL_RATE_2M_IEEE
= 4,
154 IWL_RATE_5M_IEEE
= 11,
155 IWL_RATE_11M_IEEE
= 22,
158 #define IWL_CCK_BASIC_RATES_MASK \
159 (IWL_RATE_1M_MASK | \
162 #define IWL_CCK_RATES_MASK \
163 (IWL_BASIC_RATES_MASK | \
167 #define IWL_OFDM_BASIC_RATES_MASK \
168 (IWL_RATE_6M_MASK | \
169 IWL_RATE_12M_MASK | \
172 #define IWL_OFDM_RATES_MASK \
173 (IWL_OFDM_BASIC_RATES_MASK | \
175 IWL_RATE_18M_MASK | \
176 IWL_RATE_36M_MASK | \
177 IWL_RATE_48M_MASK | \
180 #define IWL_BASIC_RATES_MASK \
181 (IWL_OFDM_BASIC_RATES_MASK | \
182 IWL_CCK_BASIC_RATES_MASK)
184 #define IWL_RATES_MASK ((1 << IWL_RATE_COUNT) - 1)
186 #define IWL_INVALID_VALUE -1
188 #define IWL_MIN_RSSI_VAL -100
189 #define IWL_MAX_RSSI_VAL 0
191 /* These values specify how many Tx frame attempts before
192 * searching for a new modulation mode */
193 #define IWL_LEGACY_FAILURE_LIMIT 160
194 #define IWL_LEGACY_SUCCESS_LIMIT 480
195 #define IWL_LEGACY_TABLE_COUNT 160
197 #define IWL_NONE_LEGACY_FAILURE_LIMIT 400
198 #define IWL_NONE_LEGACY_SUCCESS_LIMIT 4500
199 #define IWL_NONE_LEGACY_TABLE_COUNT 1500
201 /* Success ratio (ACKed / attempted tx frames) values (perfect is 128 * 100) */
202 #define IWL_RS_GOOD_RATIO 12800 /* 100% */
203 #define IWL_RATE_SCALE_SWITCH 10880 /* 85% */
204 #define IWL_RATE_HIGH_TH 10880 /* 85% */
205 #define IWL_RATE_INCREASE_TH 8960 /* 70% */
206 #define IWL_RATE_DECREASE_TH 1920 /* 15% */
208 /* possible actions when in legacy mode */
209 #define IWL_LEGACY_SWITCH_ANTENNA1 0
210 #define IWL_LEGACY_SWITCH_ANTENNA2 1
211 #define IWL_LEGACY_SWITCH_SISO 2
212 #define IWL_LEGACY_SWITCH_MIMO2_AB 3
213 #define IWL_LEGACY_SWITCH_MIMO2_AC 4
214 #define IWL_LEGACY_SWITCH_MIMO2_BC 5
216 /* possible actions when in siso mode */
217 #define IWL_SISO_SWITCH_ANTENNA1 0
218 #define IWL_SISO_SWITCH_ANTENNA2 1
219 #define IWL_SISO_SWITCH_MIMO2_AB 2
220 #define IWL_SISO_SWITCH_MIMO2_AC 3
221 #define IWL_SISO_SWITCH_MIMO2_BC 4
222 #define IWL_SISO_SWITCH_GI 5
224 /* possible actions when in mimo mode */
225 #define IWL_MIMO2_SWITCH_ANTENNA1 0
226 #define IWL_MIMO2_SWITCH_ANTENNA2 1
227 #define IWL_MIMO2_SWITCH_SISO_A 2
228 #define IWL_MIMO2_SWITCH_SISO_B 3
229 #define IWL_MIMO2_SWITCH_SISO_C 4
230 #define IWL_MIMO2_SWITCH_GI 5
232 /*FIXME:RS:add possible actions for MIMO3*/
234 #define IWL_ACTION_LIMIT 3 /* # possible actions */
236 #define LQ_SIZE 2 /* 2 mode tables: "Active" and "Search" */
238 /* load per tid defines for A-MPDU activation */
239 #define IWL_AGG_TPT_THREHOLD 0
240 #define IWL_AGG_LOAD_THRESHOLD 10
241 #define IWL_AGG_ALL_TID 0xff
242 #define TID_QUEUE_CELL_SPACING 50 /*mS */
243 #define TID_QUEUE_MAX_SIZE 20
244 #define TID_ROUND_VALUE 5 /* mS */
245 #define TID_MAX_LOAD_COUNT 8
247 #define TID_MAX_TIME_DIFF ((TID_QUEUE_MAX_SIZE - 1) * TID_QUEUE_CELL_SPACING)
248 #define TIME_WRAP_AROUND(x, y) (((y) > (x)) ? (y) - (x) : (0-(x)) + (y))
250 extern const struct iwl_rate_info iwl_rates
[IWL_RATE_COUNT
];
252 enum iwl_table_type
{
254 LQ_G
, /* legacy types */
256 LQ_SISO
, /* high-throughput types */
262 #define is_legacy(tbl) (((tbl) == LQ_G) || ((tbl) == LQ_A))
263 #define is_siso(tbl) ((tbl) == LQ_SISO)
264 #define is_mimo2(tbl) ((tbl) == LQ_MIMO2)
265 #define is_mimo3(tbl) ((tbl) == LQ_MIMO3)
266 #define is_mimo(tbl) (is_mimo2(tbl) || is_mimo3(tbl))
267 #define is_Ht(tbl) (is_siso(tbl) || is_mimo(tbl))
268 #define is_a_band(tbl) ((tbl) == LQ_A)
269 #define is_g_and(tbl) ((tbl) == LQ_G)
274 #define ANT_AB (ANT_A | ANT_B)
276 #define ANT_AC (ANT_A | ANT_C)
277 #define ANT_BC (ANT_B | ANT_C)
278 #define ANT_ABC (ANT_AB | ANT_C)
280 static inline u8
num_of_ant(u8 mask
)
282 return !!((mask
) & ANT_A
) +
287 static inline u8
first_antenna(u8 mask
)
297 static inline u8
iwl_get_prev_ieee_rate(u8 rate_index
)
299 u8 rate
= iwl_rates
[rate_index
].prev_ieee
;
301 if (rate
== IWL_RATE_INVALID
)
307 * iwl_rate_control_register - Register the rate control algorithm callbacks
309 * Since the rate control algorithm is hardware specific, there is no need
310 * or reason to place it as a stand alone module. The driver can call
311 * iwl_rate_control_register in order to register the rate control callbacks
312 * with the mac80211 subsystem. This should be performed prior to calling
313 * ieee80211_register_hw
316 extern int iwlagn_rate_control_register(void);
319 * iwl_rate_control_unregister - Unregister the rate control callbacks
321 * This should be called after calling ieee80211_unregister_hw, but before
322 * the driver is unloaded.
324 extern void iwlagn_rate_control_unregister(void);
326 #endif /* __iwl_agn__rs__ */
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