blob: b926738e0ea1b8725356e875d4a90f4c4972d44a [file] [log] [blame]
Zhu Yib481de92007-09-25 17:54:57 -07001/******************************************************************************
2 *
3 * Copyright(c) 2005 - 2007 Intel Corporation. All rights reserved.
4 *
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.
8 *
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
12 * more details.
13 *
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
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
22 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 *****************************************************************************/
26
27#ifndef __iwl_3945_rs_h__
28#define __iwl_3945_rs_h__
29
30struct iwl_rate_info {
31 u8 plcp;
32 u8 ieee;
33 u8 prev_ieee; /* previous rate in IEEE speeds */
34 u8 next_ieee; /* next rate in IEEE speeds */
35 u8 prev_rs; /* previous rate used in rs algo */
36 u8 next_rs; /* next rate used in rs algo */
37 u8 prev_rs_tgg; /* previous rate used in TGG rs algo */
38 u8 next_rs_tgg; /* next rate used in TGG rs algo */
39};
40
41enum {
42 IWL_RATE_6M_INDEX = 0,
43 IWL_RATE_9M_INDEX,
44 IWL_RATE_12M_INDEX,
45 IWL_RATE_18M_INDEX,
46 IWL_RATE_24M_INDEX,
47 IWL_RATE_36M_INDEX,
48 IWL_RATE_48M_INDEX,
49 IWL_RATE_54M_INDEX,
50 IWL_RATE_1M_INDEX,
51 IWL_RATE_2M_INDEX,
52 IWL_RATE_5M_INDEX,
53 IWL_RATE_11M_INDEX,
54 IWL_RATE_COUNT,
55 IWL_RATE_INVM_INDEX,
56 IWL_RATE_INVALID = IWL_RATE_INVM_INDEX
57};
58
59enum {
60 IWL_FIRST_OFDM_RATE = IWL_RATE_6M_INDEX,
61 IWL_LAST_OFDM_RATE = IWL_RATE_54M_INDEX,
62 IWL_FIRST_CCK_RATE = IWL_RATE_1M_INDEX,
63 IWL_LAST_CCK_RATE = IWL_RATE_11M_INDEX,
64};
65
66/* #define vs. enum to keep from defaulting to 'large integer' */
67#define IWL_RATE_6M_MASK (1<<IWL_RATE_6M_INDEX)
68#define IWL_RATE_9M_MASK (1<<IWL_RATE_9M_INDEX)
69#define IWL_RATE_12M_MASK (1<<IWL_RATE_12M_INDEX)
70#define IWL_RATE_18M_MASK (1<<IWL_RATE_18M_INDEX)
71#define IWL_RATE_24M_MASK (1<<IWL_RATE_24M_INDEX)
72#define IWL_RATE_36M_MASK (1<<IWL_RATE_36M_INDEX)
73#define IWL_RATE_48M_MASK (1<<IWL_RATE_48M_INDEX)
74#define IWL_RATE_54M_MASK (1<<IWL_RATE_54M_INDEX)
75#define IWL_RATE_1M_MASK (1<<IWL_RATE_1M_INDEX)
76#define IWL_RATE_2M_MASK (1<<IWL_RATE_2M_INDEX)
77#define IWL_RATE_5M_MASK (1<<IWL_RATE_5M_INDEX)
78#define IWL_RATE_11M_MASK (1<<IWL_RATE_11M_INDEX)
79
80enum {
81 IWL_RATE_6M_PLCP = 13,
82 IWL_RATE_9M_PLCP = 15,
83 IWL_RATE_12M_PLCP = 5,
84 IWL_RATE_18M_PLCP = 7,
85 IWL_RATE_24M_PLCP = 9,
86 IWL_RATE_36M_PLCP = 11,
87 IWL_RATE_48M_PLCP = 1,
88 IWL_RATE_54M_PLCP = 3,
89 IWL_RATE_1M_PLCP = 10,
90 IWL_RATE_2M_PLCP = 20,
91 IWL_RATE_5M_PLCP = 55,
92 IWL_RATE_11M_PLCP = 110,
93};
94
95enum {
96 IWL_RATE_6M_IEEE = 12,
97 IWL_RATE_9M_IEEE = 18,
98 IWL_RATE_12M_IEEE = 24,
99 IWL_RATE_18M_IEEE = 36,
100 IWL_RATE_24M_IEEE = 48,
101 IWL_RATE_36M_IEEE = 72,
102 IWL_RATE_48M_IEEE = 96,
103 IWL_RATE_54M_IEEE = 108,
104 IWL_RATE_1M_IEEE = 2,
105 IWL_RATE_2M_IEEE = 4,
106 IWL_RATE_5M_IEEE = 11,
107 IWL_RATE_11M_IEEE = 22,
108};
109
110#define IWL_CCK_BASIC_RATES_MASK \
111 (IWL_RATE_1M_MASK | \
112 IWL_RATE_2M_MASK)
113
114#define IWL_CCK_RATES_MASK \
115 (IWL_BASIC_RATES_MASK | \
116 IWL_RATE_5M_MASK | \
117 IWL_RATE_11M_MASK)
118
119#define IWL_OFDM_BASIC_RATES_MASK \
120 (IWL_RATE_6M_MASK | \
121 IWL_RATE_12M_MASK | \
122 IWL_RATE_24M_MASK)
123
124#define IWL_OFDM_RATES_MASK \
125 (IWL_OFDM_BASIC_RATES_MASK | \
126 IWL_RATE_9M_MASK | \
127 IWL_RATE_18M_MASK | \
128 IWL_RATE_36M_MASK | \
129 IWL_RATE_48M_MASK | \
130 IWL_RATE_54M_MASK)
131
132#define IWL_BASIC_RATES_MASK \
133 (IWL_OFDM_BASIC_RATES_MASK | \
134 IWL_CCK_BASIC_RATES_MASK)
135
136#define IWL_RATES_MASK ((1<<IWL_RATE_COUNT)-1)
137
138#define IWL_INVALID_VALUE -1
139
140#define IWL_MIN_RSSI_VAL -100
141#define IWL_MAX_RSSI_VAL 0
142
143extern const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT];
144
145static inline u8 iwl_get_prev_ieee_rate(u8 rate_index)
146{
147 u8 rate = iwl_rates[rate_index].prev_ieee;
148
149 if (rate == IWL_RATE_INVALID)
150 rate = rate_index;
151 return rate;
152}
153
154/**
155 * iwl_fill_rs_info - Fill an output text buffer with the rate representation
156 *
157 * NOTE: This is provided as a quick mechanism for a user to visualize
158 * the performance of the rate control alogirthm and is not meant to be
159 * parsed software.
160 */
161extern int iwl_fill_rs_info(struct ieee80211_hw *, char *buf, u8 sta_id);
162
163/**
164 * iwl_rate_scale_init - Initialize the rate scale table based on assoc info
165 *
166 * The specific througput table used is based on the type of network
167 * the associated with, including A, B, G, and G w/ TGG protection
168 */
169extern void iwl_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id);
170
171/**
172 * iwl_rate_control_register - Register the rate control algorithm callbacks
173 *
174 * Since the rate control algorithm is hardware specific, there is no need
175 * or reason to place it as a stand alone module. The driver can call
176 * iwl_rate_control_register in order to register the rate control callbacks
177 * with the mac80211 subsystem. This should be performed prior to calling
178 * ieee80211_register_hw
179 *
180 */
181extern void iwl_rate_control_register(struct ieee80211_hw *hw);
182
183/**
184 * iwl_rate_control_unregister - Unregister the rate control callbacks
185 *
186 * This should be called after calling ieee80211_unregister_hw, but before
187 * the driver is unloaded.
188 */
189extern void iwl_rate_control_unregister(struct ieee80211_hw *hw);
190
191#endif