1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
|
/******************************************************************************
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-io.h"
#include "iwl-agn.h"
int iwlagn_send_rxon_assoc(struct iwl_priv *priv)
{
int ret = 0;
struct iwl5000_rxon_assoc_cmd rxon_assoc;
const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
if ((rxon1->flags == rxon2->flags) &&
(rxon1->filter_flags == rxon2->filter_flags) &&
(rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
(rxon1->ofdm_ht_single_stream_basic_rates ==
rxon2->ofdm_ht_single_stream_basic_rates) &&
(rxon1->ofdm_ht_dual_stream_basic_rates ==
rxon2->ofdm_ht_dual_stream_basic_rates) &&
(rxon1->ofdm_ht_triple_stream_basic_rates ==
rxon2->ofdm_ht_triple_stream_basic_rates) &&
(rxon1->acquisition_data == rxon2->acquisition_data) &&
(rxon1->rx_chain == rxon2->rx_chain) &&
(rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n");
return 0;
}
rxon_assoc.flags = priv->staging_rxon.flags;
rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
rxon_assoc.reserved1 = 0;
rxon_assoc.reserved2 = 0;
rxon_assoc.reserved3 = 0;
rxon_assoc.ofdm_ht_single_stream_basic_rates =
priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
rxon_assoc.ofdm_ht_dual_stream_basic_rates =
priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
rxon_assoc.ofdm_ht_triple_stream_basic_rates =
priv->staging_rxon.ofdm_ht_triple_stream_basic_rates;
rxon_assoc.acquisition_data = priv->staging_rxon.acquisition_data;
ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC,
sizeof(rxon_assoc), &rxon_assoc, NULL);
if (ret)
return ret;
return ret;
}
int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
{
struct iwl_tx_ant_config_cmd tx_ant_cmd = {
.valid = cpu_to_le32(valid_tx_ant),
};
if (IWL_UCODE_API(priv->ucode_ver) > 1) {
IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
return iwl_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD,
sizeof(struct iwl_tx_ant_config_cmd),
&tx_ant_cmd);
} else {
IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
return -EOPNOTSUPP;
}
}
/* Currently this is the superset of everything */
static u16 iwlagn_get_hcmd_size(u8 cmd_id, u16 len)
{
return len;
}
static u16 iwlagn_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
{
u16 size = (u16)sizeof(struct iwl_addsta_cmd);
struct iwl_addsta_cmd *addsta = (struct iwl_addsta_cmd *)data;
memcpy(addsta, cmd, size);
/* resrved in 5000 */
addsta->rate_n_flags = cpu_to_le16(0);
return size;
}
static void iwlagn_gain_computation(struct iwl_priv *priv,
u32 average_noise[NUM_RX_CHAINS],
u16 min_average_noise_antenna_i,
u32 min_average_noise,
u8 default_chain)
{
int i;
s32 delta_g;
struct iwl_chain_noise_data *data = &priv->chain_noise_data;
/*
* Find Gain Code for the chains based on "default chain"
*/
for (i = default_chain + 1; i < NUM_RX_CHAINS; i++) {
if ((data->disconn_array[i])) {
data->delta_gain_code[i] = 0;
continue;
}
delta_g = (priv->cfg->chain_noise_scale *
((s32)average_noise[default_chain] -
(s32)average_noise[i])) / 1500;
/* bound gain by 2 bits value max, 3rd bit is sign */
data->delta_gain_code[i] =
min(abs(delta_g), (long) CHAIN_NOISE_MAX_DELTA_GAIN_CODE);
if (delta_g < 0)
/*
* set negative sign ...
* note to Intel developers: This is uCode API format,
* not the format of any internal device registers.
* Do not change this format for e.g. 6050 or similar
* devices. Change format only if more resolution
* (i.e. more than 2 bits magnitude) is needed.
*/
data->delta_gain_code[i] |= (1 << 2);
}
IWL_DEBUG_CALIB(priv, "Delta gains: ANT_B = %d ANT_C = %d\n",
data->delta_gain_code[1], data->delta_gain_code[2]);
if (!data->radio_write) {
struct iwl_calib_chain_noise_gain_cmd cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.op_code = priv->_agn.phy_calib_chain_noise_gain_cmd;
cmd.hdr.first_group = 0;
cmd.hdr.groups_num = 1;
cmd.hdr.data_valid = 1;
cmd.delta_gain_1 = data->delta_gain_code[1];
cmd.delta_gain_2 = data->delta_gain_code[2];
iwl_send_cmd_pdu_async(priv, REPLY_PHY_CALIBRATION_CMD,
sizeof(cmd), &cmd, NULL);
data->radio_write = 1;
data->state = IWL_CHAIN_NOISE_CALIBRATED;
}
}
static void iwlagn_chain_noise_reset(struct iwl_priv *priv)
{
struct iwl_chain_noise_data *data = &priv->chain_noise_data;
int ret;
if ((data->state == IWL_CHAIN_NOISE_ALIVE) &&
iwl_is_associated(priv)) {
struct iwl_calib_chain_noise_reset_cmd cmd;
/* clear data for chain noise calibration algorithm */
data->chain_noise_a = 0;
data->chain_noise_b = 0;
data->chain_noise_c = 0;
data->chain_signal_a = 0;
data->chain_signal_b = 0;
data->chain_signal_c = 0;
data->beacon_count = 0;
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.op_code = priv->_agn.phy_calib_chain_noise_reset_cmd;
cmd.hdr.first_group = 0;
cmd.hdr.groups_num = 1;
cmd.hdr.data_valid = 1;
ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
sizeof(cmd), &cmd);
if (ret)
IWL_ERR(priv,
"Could not send REPLY_PHY_CALIBRATION_CMD\n");
data->state = IWL_CHAIN_NOISE_ACCUMULATE;
IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n");
}
}
static void iwlagn_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
__le32 *tx_flags)
{
*tx_flags |= TX_CMD_FLG_PROT_REQUIRE_MSK;
}
/* Calc max signal level (dBm) among 3 possible receivers */
static int iwlagn_calc_rssi(struct iwl_priv *priv,
struct iwl_rx_phy_res *rx_resp)
{
/* data from PHY/DSP regarding signal strength, etc.,
* contents are always there, not configurable by host
*/
struct iwl5000_non_cfg_phy *ncphy =
(struct iwl5000_non_cfg_phy *)rx_resp->non_cfg_phy_buf;
u32 val, rssi_a, rssi_b, rssi_c, max_rssi;
u8 agc;
val = le32_to_cpu(ncphy->non_cfg_phy[IWL50_RX_RES_AGC_IDX]);
agc = (val & IWL50_OFDM_AGC_MSK) >> IWL50_OFDM_AGC_BIT_POS;
/* Find max rssi among 3 possible receivers.
* These values are measured by the digital signal processor (DSP).
* They should stay fairly constant even as the signal strength varies,
* if the radio's automatic gain control (AGC) is working right.
* AGC value (see below) will provide the "interesting" info.
*/
val = le32_to_cpu(ncphy->non_cfg_phy[IWL50_RX_RES_RSSI_AB_IDX]);
rssi_a = (val & IWL50_OFDM_RSSI_A_MSK) >> IWL50_OFDM_RSSI_A_BIT_POS;
rssi_b = (val & IWL50_OFDM_RSSI_B_MSK) >> IWL50_OFDM_RSSI_B_BIT_POS;
val = le32_to_cpu(ncphy->non_cfg_phy[IWL50_RX_RES_RSSI_C_IDX]);
rssi_c = (val & IWL50_OFDM_RSSI_C_MSK) >> IWL50_OFDM_RSSI_C_BIT_POS;
max_rssi = max_t(u32, rssi_a, rssi_b);
max_rssi = max_t(u32, max_rssi, rssi_c);
IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n",
rssi_a, rssi_b, rssi_c, max_rssi, agc);
/* dBm = max_rssi dB - agc dB - constant.
* Higher AGC (higher radio gain) means lower signal. */
return max_rssi - agc - IWLAGN_RSSI_OFFSET;
}
struct iwl_hcmd_ops iwlagn_hcmd = {
.rxon_assoc = iwlagn_send_rxon_assoc,
.commit_rxon = iwl_commit_rxon,
.set_rxon_chain = iwl_set_rxon_chain,
.set_tx_ant = iwlagn_send_tx_ant_config,
.send_bt_config = iwl_send_bt_config,
};
struct iwl_hcmd_utils_ops iwlagn_hcmd_utils = {
.get_hcmd_size = iwlagn_get_hcmd_size,
.build_addsta_hcmd = iwlagn_build_addsta_hcmd,
.gain_computation = iwlagn_gain_computation,
.chain_noise_reset = iwlagn_chain_noise_reset,
.rts_tx_cmd_flag = iwlagn_rts_tx_cmd_flag,
.calc_rssi = iwlagn_calc_rssi,
.request_scan = iwlagn_request_scan,
};
|
