1 /******************************************************************************
3 * Copyright(c) 2005 - 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 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *****************************************************************************/
27 #ifndef __iwl_3945_rs_h__
28 #define __iwl_3945_rs_h__
30 struct iwl3945_rate_info
{
31 u8 plcp
; /* uCode API: IWL_RATE_6M_PLCP, etc. */
32 u8 ieee
; /* MAC header: IWL_RATE_6M_IEEE, etc. */
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 u8 table_rs_index
; /* index in rate scale table cmd */
40 u8 prev_table_rs
; /* prev in rate table cmd */
44 * These serve as indexes into
45 * struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT];
48 IWL_RATE_1M_INDEX
= 0,
62 IWL_RATE_INVALID
= IWL_RATE_INVM_INDEX
66 IWL_RATE_6M_INDEX_TABLE
= 0,
67 IWL_RATE_9M_INDEX_TABLE
,
68 IWL_RATE_12M_INDEX_TABLE
,
69 IWL_RATE_18M_INDEX_TABLE
,
70 IWL_RATE_24M_INDEX_TABLE
,
71 IWL_RATE_36M_INDEX_TABLE
,
72 IWL_RATE_48M_INDEX_TABLE
,
73 IWL_RATE_54M_INDEX_TABLE
,
74 IWL_RATE_1M_INDEX_TABLE
,
75 IWL_RATE_2M_INDEX_TABLE
,
76 IWL_RATE_5M_INDEX_TABLE
,
77 IWL_RATE_11M_INDEX_TABLE
,
78 IWL_RATE_INVM_INDEX_TABLE
= IWL_RATE_INVM_INDEX
,
82 IWL_FIRST_OFDM_RATE
= IWL_RATE_6M_INDEX
,
83 IWL_LAST_OFDM_RATE
= IWL_RATE_54M_INDEX
,
84 IWL_FIRST_CCK_RATE
= IWL_RATE_1M_INDEX
,
85 IWL_LAST_CCK_RATE
= IWL_RATE_11M_INDEX
,
88 /* #define vs. enum to keep from defaulting to 'large integer' */
89 #define IWL_RATE_6M_MASK (1 << IWL_RATE_6M_INDEX)
90 #define IWL_RATE_9M_MASK (1 << IWL_RATE_9M_INDEX)
91 #define IWL_RATE_12M_MASK (1 << IWL_RATE_12M_INDEX)
92 #define IWL_RATE_18M_MASK (1 << IWL_RATE_18M_INDEX)
93 #define IWL_RATE_24M_MASK (1 << IWL_RATE_24M_INDEX)
94 #define IWL_RATE_36M_MASK (1 << IWL_RATE_36M_INDEX)
95 #define IWL_RATE_48M_MASK (1 << IWL_RATE_48M_INDEX)
96 #define IWL_RATE_54M_MASK (1 << IWL_RATE_54M_INDEX)
97 #define IWL_RATE_1M_MASK (1 << IWL_RATE_1M_INDEX)
98 #define IWL_RATE_2M_MASK (1 << IWL_RATE_2M_INDEX)
99 #define IWL_RATE_5M_MASK (1 << IWL_RATE_5M_INDEX)
100 #define IWL_RATE_11M_MASK (1 << IWL_RATE_11M_INDEX)
102 /* 3945 uCode API values for (legacy) bit rates, both OFDM and CCK */
104 IWL_RATE_6M_PLCP
= 13,
105 IWL_RATE_9M_PLCP
= 15,
106 IWL_RATE_12M_PLCP
= 5,
107 IWL_RATE_18M_PLCP
= 7,
108 IWL_RATE_24M_PLCP
= 9,
109 IWL_RATE_36M_PLCP
= 11,
110 IWL_RATE_48M_PLCP
= 1,
111 IWL_RATE_54M_PLCP
= 3,
112 IWL_RATE_1M_PLCP
= 10,
113 IWL_RATE_2M_PLCP
= 20,
114 IWL_RATE_5M_PLCP
= 55,
115 IWL_RATE_11M_PLCP
= 110,
118 /* MAC header values for bit rates */
120 IWL_RATE_6M_IEEE
= 12,
121 IWL_RATE_9M_IEEE
= 18,
122 IWL_RATE_12M_IEEE
= 24,
123 IWL_RATE_18M_IEEE
= 36,
124 IWL_RATE_24M_IEEE
= 48,
125 IWL_RATE_36M_IEEE
= 72,
126 IWL_RATE_48M_IEEE
= 96,
127 IWL_RATE_54M_IEEE
= 108,
128 IWL_RATE_1M_IEEE
= 2,
129 IWL_RATE_2M_IEEE
= 4,
130 IWL_RATE_5M_IEEE
= 11,
131 IWL_RATE_11M_IEEE
= 22,
134 #define IWL_CCK_BASIC_RATES_MASK \
135 (IWL_RATE_1M_MASK | \
138 #define IWL_CCK_RATES_MASK \
139 (IWL_BASIC_RATES_MASK | \
143 #define IWL_OFDM_BASIC_RATES_MASK \
144 (IWL_RATE_6M_MASK | \
145 IWL_RATE_12M_MASK | \
148 #define IWL_OFDM_RATES_MASK \
149 (IWL_OFDM_BASIC_RATES_MASK | \
151 IWL_RATE_18M_MASK | \
152 IWL_RATE_36M_MASK | \
153 IWL_RATE_48M_MASK | \
156 #define IWL_BASIC_RATES_MASK \
157 (IWL_OFDM_BASIC_RATES_MASK | \
158 IWL_CCK_BASIC_RATES_MASK)
160 #define IWL_RATES_MASK ((1 << IWL_RATE_COUNT) - 1)
162 #define IWL_INV_TPT -1
164 #define IWL_MIN_RSSI_VAL -100
165 #define IWL_MAX_RSSI_VAL 0
167 extern const struct iwl3945_rate_info iwl3945_rates
[IWL_RATE_COUNT
];
169 static inline u8
iwl3945_get_prev_ieee_rate(u8 rate_index
)
171 u8 rate
= iwl3945_rates
[rate_index
].prev_ieee
;
173 if (rate
== IWL_RATE_INVALID
)
179 * iwl3945_fill_rs_info - Fill an output text buffer with the rate representation
181 * NOTE: This is provided as a quick mechanism for a user to visualize
182 * the performance of the rate control algorithm and is not meant to be
185 extern int iwl3945_fill_rs_info(struct ieee80211_hw
*, char *buf
, u8 sta_id
);
188 * iwl3945_rate_scale_init - Initialize the rate scale table based on assoc info
190 * The specific throughput table used is based on the type of network
191 * the associated with, including A, B, G, and G w/ TGG protection
193 extern void iwl3945_rate_scale_init(struct ieee80211_hw
*hw
, s32 sta_id
);
196 * iwl3945_rate_control_register - Register the rate control algorithm callbacks
198 * Since the rate control algorithm is hardware specific, there is no need
199 * or reason to place it as a stand alone module. The driver can call
200 * iwl3945_rate_control_register in order to register the rate control callbacks
201 * with the mac80211 subsystem. This should be performed prior to calling
202 * ieee80211_register_hw
205 extern int iwl3945_rate_control_register(void);
208 * iwl3945_rate_control_unregister - Unregister the rate control callbacks
210 * This should be called after calling ieee80211_unregister_hw, but before
211 * the driver is unloaded.
213 extern void iwl3945_rate_control_unregister(void);