1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 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__
30 struct iwl_rate_info {
31 u8 plcp; /* uCode API: IWL_RATE_6M_PLCP, etc. */
32 u8 plcp_siso; /* uCode API: IWL_RATE_SISO_6M_PLCP, etc. */
33 u8 plcp_mimo2; /* uCode API: IWL_RATE_MIMO2_6M_PLCP, etc. */
34 u8 plcp_mimo3; /* uCode API: IWL_RATE_MIMO3_6M_PLCP, etc. */
35 u8 ieee; /* MAC header: IWL_RATE_6M_IEEE, etc. */
36 u8 prev_ieee; /* previous rate in IEEE speeds */
37 u8 next_ieee; /* next rate in IEEE speeds */
38 u8 prev_rs; /* previous rate used in rs algo */
39 u8 next_rs; /* next rate used in rs algo */
40 u8 prev_rs_tgg; /* previous rate used in TGG rs algo */
41 u8 next_rs_tgg; /* next rate used in TGG rs algo */
44 struct iwl3945_rate_info {
45 u8 plcp; /* uCode API: IWL_RATE_6M_PLCP, etc. */
46 u8 ieee; /* MAC header: IWL_RATE_6M_IEEE, etc. */
47 u8 prev_ieee; /* previous rate in IEEE speeds */
48 u8 next_ieee; /* next rate in IEEE speeds */
49 u8 prev_rs; /* previous rate used in rs algo */
50 u8 next_rs; /* next rate used in rs algo */
51 u8 prev_rs_tgg; /* previous rate used in TGG rs algo */
52 u8 next_rs_tgg; /* next rate used in TGG rs algo */
53 u8 table_rs_index; /* index in rate scale table cmd */
54 u8 prev_table_rs; /* prev in rate table cmd */
58 * These serve as indexes into
59 * struct iwl_rate_info iwl_rates[IWL_RATE_COUNT];
62 IWL_RATE_1M_INDEX = 0,
75 IWL_RATE_COUNT, /*FIXME:RS:change to IWL_RATE_INDEX_COUNT,*/
76 IWL_RATE_COUNT_3945 = IWL_RATE_COUNT - 1,
77 IWL_RATE_INVM_INDEX = IWL_RATE_COUNT,
78 IWL_RATE_INVALID = IWL_RATE_COUNT,
82 IWL_RATE_6M_INDEX_TABLE = 0,
83 IWL_RATE_9M_INDEX_TABLE,
84 IWL_RATE_12M_INDEX_TABLE,
85 IWL_RATE_18M_INDEX_TABLE,
86 IWL_RATE_24M_INDEX_TABLE,
87 IWL_RATE_36M_INDEX_TABLE,
88 IWL_RATE_48M_INDEX_TABLE,
89 IWL_RATE_54M_INDEX_TABLE,
90 IWL_RATE_1M_INDEX_TABLE,
91 IWL_RATE_2M_INDEX_TABLE,
92 IWL_RATE_5M_INDEX_TABLE,
93 IWL_RATE_11M_INDEX_TABLE,
94 IWL_RATE_INVM_INDEX_TABLE = IWL_RATE_INVM_INDEX - 1,
98 IWL_FIRST_OFDM_RATE = IWL_RATE_6M_INDEX,
99 IWL39_LAST_OFDM_RATE = IWL_RATE_54M_INDEX,
100 IWL_LAST_OFDM_RATE = IWL_RATE_60M_INDEX,
101 IWL_FIRST_CCK_RATE = IWL_RATE_1M_INDEX,
102 IWL_LAST_CCK_RATE = IWL_RATE_11M_INDEX,
105 /* #define vs. enum to keep from defaulting to 'large integer' */
106 #define IWL_RATE_6M_MASK (1 << IWL_RATE_6M_INDEX)
107 #define IWL_RATE_9M_MASK (1 << IWL_RATE_9M_INDEX)
108 #define IWL_RATE_12M_MASK (1 << IWL_RATE_12M_INDEX)
109 #define IWL_RATE_18M_MASK (1 << IWL_RATE_18M_INDEX)
110 #define IWL_RATE_24M_MASK (1 << IWL_RATE_24M_INDEX)
111 #define IWL_RATE_36M_MASK (1 << IWL_RATE_36M_INDEX)
112 #define IWL_RATE_48M_MASK (1 << IWL_RATE_48M_INDEX)
113 #define IWL_RATE_54M_MASK (1 << IWL_RATE_54M_INDEX)
114 #define IWL_RATE_60M_MASK (1 << IWL_RATE_60M_INDEX)
115 #define IWL_RATE_1M_MASK (1 << IWL_RATE_1M_INDEX)
116 #define IWL_RATE_2M_MASK (1 << IWL_RATE_2M_INDEX)
117 #define IWL_RATE_5M_MASK (1 << IWL_RATE_5M_INDEX)
118 #define IWL_RATE_11M_MASK (1 << IWL_RATE_11M_INDEX)
120 /* uCode API values for legacy bit rates, both OFDM and CCK */
122 IWL_RATE_6M_PLCP = 13,
123 IWL_RATE_9M_PLCP = 15,
124 IWL_RATE_12M_PLCP = 5,
125 IWL_RATE_18M_PLCP = 7,
126 IWL_RATE_24M_PLCP = 9,
127 IWL_RATE_36M_PLCP = 11,
128 IWL_RATE_48M_PLCP = 1,
129 IWL_RATE_54M_PLCP = 3,
130 IWL_RATE_60M_PLCP = 3,/*FIXME:RS:should be removed*/
131 IWL_RATE_1M_PLCP = 10,
132 IWL_RATE_2M_PLCP = 20,
133 IWL_RATE_5M_PLCP = 55,
134 IWL_RATE_11M_PLCP = 110,
135 /*FIXME:RS:change to IWL_RATE_LEGACY_??M_PLCP */
136 /*FIXME:RS:add IWL_RATE_LEGACY_INVM_PLCP = 0,*/
139 /* uCode API values for OFDM high-throughput (HT) bit rates */
141 IWL_RATE_SISO_6M_PLCP = 0,
142 IWL_RATE_SISO_12M_PLCP = 1,
143 IWL_RATE_SISO_18M_PLCP = 2,
144 IWL_RATE_SISO_24M_PLCP = 3,
145 IWL_RATE_SISO_36M_PLCP = 4,
146 IWL_RATE_SISO_48M_PLCP = 5,
147 IWL_RATE_SISO_54M_PLCP = 6,
148 IWL_RATE_SISO_60M_PLCP = 7,
149 IWL_RATE_MIMO2_6M_PLCP = 0x8,
150 IWL_RATE_MIMO2_12M_PLCP = 0x9,
151 IWL_RATE_MIMO2_18M_PLCP = 0xa,
152 IWL_RATE_MIMO2_24M_PLCP = 0xb,
153 IWL_RATE_MIMO2_36M_PLCP = 0xc,
154 IWL_RATE_MIMO2_48M_PLCP = 0xd,
155 IWL_RATE_MIMO2_54M_PLCP = 0xe,
156 IWL_RATE_MIMO2_60M_PLCP = 0xf,
157 IWL_RATE_MIMO3_6M_PLCP = 0x10,
158 IWL_RATE_MIMO3_12M_PLCP = 0x11,
159 IWL_RATE_MIMO3_18M_PLCP = 0x12,
160 IWL_RATE_MIMO3_24M_PLCP = 0x13,
161 IWL_RATE_MIMO3_36M_PLCP = 0x14,
162 IWL_RATE_MIMO3_48M_PLCP = 0x15,
163 IWL_RATE_MIMO3_54M_PLCP = 0x16,
164 IWL_RATE_MIMO3_60M_PLCP = 0x17,
165 IWL_RATE_SISO_INVM_PLCP,
166 IWL_RATE_MIMO2_INVM_PLCP = IWL_RATE_SISO_INVM_PLCP,
167 IWL_RATE_MIMO3_INVM_PLCP = IWL_RATE_SISO_INVM_PLCP,
170 /* MAC header values for bit rates */
172 IWL_RATE_6M_IEEE = 12,
173 IWL_RATE_9M_IEEE = 18,
174 IWL_RATE_12M_IEEE = 24,
175 IWL_RATE_18M_IEEE = 36,
176 IWL_RATE_24M_IEEE = 48,
177 IWL_RATE_36M_IEEE = 72,
178 IWL_RATE_48M_IEEE = 96,
179 IWL_RATE_54M_IEEE = 108,
180 IWL_RATE_60M_IEEE = 120,
181 IWL_RATE_1M_IEEE = 2,
182 IWL_RATE_2M_IEEE = 4,
183 IWL_RATE_5M_IEEE = 11,
184 IWL_RATE_11M_IEEE = 22,
187 #define IWL_CCK_BASIC_RATES_MASK \
188 (IWL_RATE_1M_MASK | \
191 #define IWL_CCK_RATES_MASK \
192 (IWL_BASIC_RATES_MASK | \
196 #define IWL_OFDM_BASIC_RATES_MASK \
197 (IWL_RATE_6M_MASK | \
198 IWL_RATE_12M_MASK | \
201 #define IWL_OFDM_RATES_MASK \
202 (IWL_OFDM_BASIC_RATES_MASK | \
204 IWL_RATE_18M_MASK | \
205 IWL_RATE_36M_MASK | \
206 IWL_RATE_48M_MASK | \
209 #define IWL_BASIC_RATES_MASK \
210 (IWL_OFDM_BASIC_RATES_MASK | \
211 IWL_CCK_BASIC_RATES_MASK)
213 #define IWL_RATES_MASK ((1 << IWL_RATE_COUNT) - 1)
215 #define IWL_INVALID_VALUE -1
217 #define IWL_MIN_RSSI_VAL -100
218 #define IWL_MAX_RSSI_VAL 0
220 /* These values specify how many Tx frame attempts before
221 * searching for a new modulation mode */
222 #define IWL_LEGACY_FAILURE_LIMIT 160
223 #define IWL_LEGACY_SUCCESS_LIMIT 480
224 #define IWL_LEGACY_TABLE_COUNT 160
226 #define IWL_NONE_LEGACY_FAILURE_LIMIT 400
227 #define IWL_NONE_LEGACY_SUCCESS_LIMIT 4500
228 #define IWL_NONE_LEGACY_TABLE_COUNT 1500
230 /* Success ratio (ACKed / attempted tx frames) values (perfect is 128 * 100) */
231 #define IWL_RS_GOOD_RATIO 12800 /* 100% */
232 #define IWL_RATE_SCALE_SWITCH 10880 /* 85% */
233 #define IWL_RATE_HIGH_TH 10880 /* 85% */
234 #define IWL_RATE_INCREASE_TH 6400 /* 50% */
235 #define IWL_RATE_DECREASE_TH 1920 /* 15% */
237 /* possible actions when in legacy mode */
238 #define IWL_LEGACY_SWITCH_ANTENNA1 0
239 #define IWL_LEGACY_SWITCH_ANTENNA2 1
240 #define IWL_LEGACY_SWITCH_SISO 2
241 #define IWL_LEGACY_SWITCH_MIMO2_AB 3
242 #define IWL_LEGACY_SWITCH_MIMO2_AC 4
243 #define IWL_LEGACY_SWITCH_MIMO2_BC 5
245 /* possible actions when in siso mode */
246 #define IWL_SISO_SWITCH_ANTENNA1 0
247 #define IWL_SISO_SWITCH_ANTENNA2 1
248 #define IWL_SISO_SWITCH_MIMO2_AB 2
249 #define IWL_SISO_SWITCH_MIMO2_AC 3
250 #define IWL_SISO_SWITCH_MIMO2_BC 4
251 #define IWL_SISO_SWITCH_GI 5
253 /* possible actions when in mimo mode */
254 #define IWL_MIMO2_SWITCH_ANTENNA1 0
255 #define IWL_MIMO2_SWITCH_ANTENNA2 1
256 #define IWL_MIMO2_SWITCH_SISO_A 2
257 #define IWL_MIMO2_SWITCH_SISO_B 3
258 #define IWL_MIMO2_SWITCH_SISO_C 4
259 #define IWL_MIMO2_SWITCH_GI 5
261 /*FIXME:RS:add possible actions for MIMO3*/
263 #define IWL_ACTION_LIMIT 3 /* # possible actions */
265 #define LQ_SIZE 2 /* 2 mode tables: "Active" and "Search" */
267 /* load per tid defines for A-MPDU activation */
268 #define IWL_AGG_TPT_THREHOLD 0
269 #define IWL_AGG_LOAD_THRESHOLD 10
270 #define IWL_AGG_ALL_TID 0xff
271 #define TID_QUEUE_CELL_SPACING 50 /*mS */
272 #define TID_QUEUE_MAX_SIZE 20
273 #define TID_ROUND_VALUE 5 /* mS */
274 #define TID_MAX_LOAD_COUNT 8
276 #define TID_MAX_TIME_DIFF ((TID_QUEUE_MAX_SIZE - 1) * TID_QUEUE_CELL_SPACING)
277 #define TIME_WRAP_AROUND(x, y) (((y) > (x)) ? (y) - (x) : (0-(x)) + (y))
279 extern const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT];
280 extern const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945];
282 enum iwl_table_type {
284 LQ_G, /* legacy types */
286 LQ_SISO, /* high-throughput types */
292 #define is_legacy(tbl) (((tbl) == LQ_G) || ((tbl) == LQ_A))
293 #define is_siso(tbl) ((tbl) == LQ_SISO)
294 #define is_mimo2(tbl) ((tbl) == LQ_MIMO2)
295 #define is_mimo3(tbl) ((tbl) == LQ_MIMO3)
296 #define is_mimo(tbl) (is_mimo2(tbl) || is_mimo3(tbl))
297 #define is_Ht(tbl) (is_siso(tbl) || is_mimo(tbl))
298 #define is_a_band(tbl) ((tbl) == LQ_A)
299 #define is_g_and(tbl) ((tbl) == LQ_G)
304 #define ANT_AB (ANT_A | ANT_B)
306 #define ANT_AC (ANT_A | ANT_C)
307 #define ANT_BC (ANT_B | ANT_C)
308 #define ANT_ABC (ANT_AB | ANT_C)
310 static inline u8 num_of_ant(u8 mask)
312 return !!((mask) & ANT_A) +
317 static inline u8 first_antenna(u8 mask)
327 static inline u8 iwl_get_prev_ieee_rate(u8 rate_index)
329 u8 rate = iwl_rates[rate_index].prev_ieee;
331 if (rate == IWL_RATE_INVALID)
336 static inline u8 iwl3945_get_prev_ieee_rate(u8 rate_index)
338 u8 rate = iwl3945_rates[rate_index].prev_ieee;
340 if (rate == IWL_RATE_INVALID)
346 * iwl3945_rate_scale_init - Initialize the rate scale table based on assoc info
348 * The specific throughput table used is based on the type of network
349 * the associated with, including A, B, G, and G w/ TGG protection
351 extern void iwl3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id);
354 * iwl_rate_control_register - Register the rate control algorithm callbacks
356 * Since the rate control algorithm is hardware specific, there is no need
357 * or reason to place it as a stand alone module. The driver can call
358 * iwl_rate_control_register in order to register the rate control callbacks
359 * with the mac80211 subsystem. This should be performed prior to calling
360 * ieee80211_register_hw
363 extern int iwlagn_rate_control_register(void);
364 extern int iwl3945_rate_control_register(void);
367 * iwl_rate_control_unregister - Unregister the rate control callbacks
369 * This should be called after calling ieee80211_unregister_hw, but before
370 * the driver is unloaded.
372 extern void iwlagn_rate_control_unregister(void);
373 extern void iwl3945_rate_control_unregister(void);
375 #endif /* __iwl_agn__rs__ */