Commit | Line | Data |
---|---|---|
7dc77dba WYG |
1 | /****************************************************************************** |
2 | * | |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
5 | * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of version 2 of the GNU General Public License as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
19 | * USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution | |
22 | * in the file called LICENSE.GPL. | |
23 | * | |
24 | * Contact Information: | |
25 | * Intel Linux Wireless <ilw@linux.intel.com> | |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
27 | * | |
28 | *****************************************************************************/ | |
29 | ||
30 | #include <linux/kernel.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/sched.h> | |
34 | ||
35 | #include "iwl-dev.h" | |
36 | #include "iwl-core.h" | |
37 | #include "iwl-io.h" | |
510cb791 | 38 | #include "iwl-agn.h" |
7dc77dba | 39 | |
1808972f | 40 | int iwlagn_send_rxon_assoc(struct iwl_priv *priv) |
7dc77dba WYG |
41 | { |
42 | int ret = 0; | |
43 | struct iwl5000_rxon_assoc_cmd rxon_assoc; | |
44 | const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon; | |
45 | const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon; | |
46 | ||
47 | if ((rxon1->flags == rxon2->flags) && | |
48 | (rxon1->filter_flags == rxon2->filter_flags) && | |
49 | (rxon1->cck_basic_rates == rxon2->cck_basic_rates) && | |
50 | (rxon1->ofdm_ht_single_stream_basic_rates == | |
51 | rxon2->ofdm_ht_single_stream_basic_rates) && | |
52 | (rxon1->ofdm_ht_dual_stream_basic_rates == | |
53 | rxon2->ofdm_ht_dual_stream_basic_rates) && | |
54 | (rxon1->ofdm_ht_triple_stream_basic_rates == | |
55 | rxon2->ofdm_ht_triple_stream_basic_rates) && | |
56 | (rxon1->acquisition_data == rxon2->acquisition_data) && | |
57 | (rxon1->rx_chain == rxon2->rx_chain) && | |
58 | (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) { | |
59 | IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n"); | |
60 | return 0; | |
61 | } | |
62 | ||
63 | rxon_assoc.flags = priv->staging_rxon.flags; | |
64 | rxon_assoc.filter_flags = priv->staging_rxon.filter_flags; | |
65 | rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates; | |
66 | rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates; | |
67 | rxon_assoc.reserved1 = 0; | |
68 | rxon_assoc.reserved2 = 0; | |
69 | rxon_assoc.reserved3 = 0; | |
70 | rxon_assoc.ofdm_ht_single_stream_basic_rates = | |
71 | priv->staging_rxon.ofdm_ht_single_stream_basic_rates; | |
72 | rxon_assoc.ofdm_ht_dual_stream_basic_rates = | |
73 | priv->staging_rxon.ofdm_ht_dual_stream_basic_rates; | |
74 | rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain; | |
75 | rxon_assoc.ofdm_ht_triple_stream_basic_rates = | |
76 | priv->staging_rxon.ofdm_ht_triple_stream_basic_rates; | |
77 | rxon_assoc.acquisition_data = priv->staging_rxon.acquisition_data; | |
78 | ||
79 | ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC, | |
80 | sizeof(rxon_assoc), &rxon_assoc, NULL); | |
81 | if (ret) | |
82 | return ret; | |
83 | ||
84 | return ret; | |
85 | } | |
86 | ||
1808972f | 87 | int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant) |
7dc77dba WYG |
88 | { |
89 | struct iwl_tx_ant_config_cmd tx_ant_cmd = { | |
90 | .valid = cpu_to_le32(valid_tx_ant), | |
91 | }; | |
92 | ||
93 | if (IWL_UCODE_API(priv->ucode_ver) > 1) { | |
94 | IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant); | |
95 | return iwl_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, | |
96 | sizeof(struct iwl_tx_ant_config_cmd), | |
97 | &tx_ant_cmd); | |
98 | } else { | |
99 | IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n"); | |
100 | return -EOPNOTSUPP; | |
101 | } | |
102 | } | |
103 | ||
104 | /* Currently this is the superset of everything */ | |
105 | static u16 iwlagn_get_hcmd_size(u8 cmd_id, u16 len) | |
106 | { | |
107 | return len; | |
108 | } | |
109 | ||
110 | static u16 iwlagn_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data) | |
111 | { | |
112 | u16 size = (u16)sizeof(struct iwl_addsta_cmd); | |
113 | struct iwl_addsta_cmd *addsta = (struct iwl_addsta_cmd *)data; | |
114 | memcpy(addsta, cmd, size); | |
115 | /* resrved in 5000 */ | |
116 | addsta->rate_n_flags = cpu_to_le16(0); | |
117 | return size; | |
118 | } | |
119 | ||
120 | static void iwlagn_gain_computation(struct iwl_priv *priv, | |
121 | u32 average_noise[NUM_RX_CHAINS], | |
122 | u16 min_average_noise_antenna_i, | |
123 | u32 min_average_noise, | |
124 | u8 default_chain) | |
125 | { | |
126 | int i; | |
127 | s32 delta_g; | |
128 | struct iwl_chain_noise_data *data = &priv->chain_noise_data; | |
129 | ||
130 | /* | |
131 | * Find Gain Code for the chains based on "default chain" | |
132 | */ | |
133 | for (i = default_chain + 1; i < NUM_RX_CHAINS; i++) { | |
134 | if ((data->disconn_array[i])) { | |
135 | data->delta_gain_code[i] = 0; | |
136 | continue; | |
137 | } | |
138 | ||
139 | delta_g = (priv->cfg->chain_noise_scale * | |
140 | ((s32)average_noise[default_chain] - | |
141 | (s32)average_noise[i])) / 1500; | |
142 | ||
143 | /* bound gain by 2 bits value max, 3rd bit is sign */ | |
144 | data->delta_gain_code[i] = | |
145 | min(abs(delta_g), (long) CHAIN_NOISE_MAX_DELTA_GAIN_CODE); | |
146 | ||
147 | if (delta_g < 0) | |
148 | /* | |
149 | * set negative sign ... | |
150 | * note to Intel developers: This is uCode API format, | |
151 | * not the format of any internal device registers. | |
152 | * Do not change this format for e.g. 6050 or similar | |
153 | * devices. Change format only if more resolution | |
154 | * (i.e. more than 2 bits magnitude) is needed. | |
155 | */ | |
156 | data->delta_gain_code[i] |= (1 << 2); | |
157 | } | |
158 | ||
159 | IWL_DEBUG_CALIB(priv, "Delta gains: ANT_B = %d ANT_C = %d\n", | |
160 | data->delta_gain_code[1], data->delta_gain_code[2]); | |
161 | ||
162 | if (!data->radio_write) { | |
163 | struct iwl_calib_chain_noise_gain_cmd cmd; | |
164 | ||
165 | memset(&cmd, 0, sizeof(cmd)); | |
166 | ||
6a822d06 | 167 | cmd.hdr.op_code = priv->_agn.phy_calib_chain_noise_gain_cmd; |
7dc77dba WYG |
168 | cmd.hdr.first_group = 0; |
169 | cmd.hdr.groups_num = 1; | |
170 | cmd.hdr.data_valid = 1; | |
171 | cmd.delta_gain_1 = data->delta_gain_code[1]; | |
172 | cmd.delta_gain_2 = data->delta_gain_code[2]; | |
173 | iwl_send_cmd_pdu_async(priv, REPLY_PHY_CALIBRATION_CMD, | |
174 | sizeof(cmd), &cmd, NULL); | |
175 | ||
176 | data->radio_write = 1; | |
177 | data->state = IWL_CHAIN_NOISE_CALIBRATED; | |
178 | } | |
7dc77dba WYG |
179 | } |
180 | ||
181 | static void iwlagn_chain_noise_reset(struct iwl_priv *priv) | |
182 | { | |
183 | struct iwl_chain_noise_data *data = &priv->chain_noise_data; | |
184 | int ret; | |
185 | ||
f4308449 SZ |
186 | if ((data->state == IWL_CHAIN_NOISE_ALIVE) && |
187 | iwl_is_associated(priv)) { | |
7dc77dba | 188 | struct iwl_calib_chain_noise_reset_cmd cmd; |
7dc77dba | 189 | |
f4308449 SZ |
190 | /* clear data for chain noise calibration algorithm */ |
191 | data->chain_noise_a = 0; | |
192 | data->chain_noise_b = 0; | |
193 | data->chain_noise_c = 0; | |
194 | data->chain_signal_a = 0; | |
195 | data->chain_signal_b = 0; | |
196 | data->chain_signal_c = 0; | |
197 | data->beacon_count = 0; | |
198 | ||
199 | memset(&cmd, 0, sizeof(cmd)); | |
6a822d06 | 200 | cmd.hdr.op_code = priv->_agn.phy_calib_chain_noise_reset_cmd; |
7dc77dba WYG |
201 | cmd.hdr.first_group = 0; |
202 | cmd.hdr.groups_num = 1; | |
203 | cmd.hdr.data_valid = 1; | |
204 | ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, | |
205 | sizeof(cmd), &cmd); | |
206 | if (ret) | |
207 | IWL_ERR(priv, | |
208 | "Could not send REPLY_PHY_CALIBRATION_CMD\n"); | |
209 | data->state = IWL_CHAIN_NOISE_ACCUMULATE; | |
210 | IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n"); | |
211 | } | |
212 | } | |
213 | ||
214 | static void iwlagn_rts_tx_cmd_flag(struct ieee80211_tx_info *info, | |
215 | __le32 *tx_flags) | |
216 | { | |
4e3243f5 | 217 | *tx_flags |= TX_CMD_FLG_PROT_REQUIRE_MSK; |
7dc77dba WYG |
218 | } |
219 | ||
220 | /* Calc max signal level (dBm) among 3 possible receivers */ | |
221 | static int iwlagn_calc_rssi(struct iwl_priv *priv, | |
222 | struct iwl_rx_phy_res *rx_resp) | |
223 | { | |
224 | /* data from PHY/DSP regarding signal strength, etc., | |
225 | * contents are always there, not configurable by host | |
226 | */ | |
227 | struct iwl5000_non_cfg_phy *ncphy = | |
228 | (struct iwl5000_non_cfg_phy *)rx_resp->non_cfg_phy_buf; | |
229 | u32 val, rssi_a, rssi_b, rssi_c, max_rssi; | |
230 | u8 agc; | |
231 | ||
232 | val = le32_to_cpu(ncphy->non_cfg_phy[IWL50_RX_RES_AGC_IDX]); | |
233 | agc = (val & IWL50_OFDM_AGC_MSK) >> IWL50_OFDM_AGC_BIT_POS; | |
234 | ||
235 | /* Find max rssi among 3 possible receivers. | |
236 | * These values are measured by the digital signal processor (DSP). | |
237 | * They should stay fairly constant even as the signal strength varies, | |
238 | * if the radio's automatic gain control (AGC) is working right. | |
239 | * AGC value (see below) will provide the "interesting" info. | |
240 | */ | |
241 | val = le32_to_cpu(ncphy->non_cfg_phy[IWL50_RX_RES_RSSI_AB_IDX]); | |
242 | rssi_a = (val & IWL50_OFDM_RSSI_A_MSK) >> IWL50_OFDM_RSSI_A_BIT_POS; | |
243 | rssi_b = (val & IWL50_OFDM_RSSI_B_MSK) >> IWL50_OFDM_RSSI_B_BIT_POS; | |
244 | val = le32_to_cpu(ncphy->non_cfg_phy[IWL50_RX_RES_RSSI_C_IDX]); | |
245 | rssi_c = (val & IWL50_OFDM_RSSI_C_MSK) >> IWL50_OFDM_RSSI_C_BIT_POS; | |
246 | ||
247 | max_rssi = max_t(u32, rssi_a, rssi_b); | |
248 | max_rssi = max_t(u32, max_rssi, rssi_c); | |
249 | ||
250 | IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n", | |
251 | rssi_a, rssi_b, rssi_c, max_rssi, agc); | |
252 | ||
253 | /* dBm = max_rssi dB - agc dB - constant. | |
254 | * Higher AGC (higher radio gain) means lower signal. */ | |
b744cb79 | 255 | return max_rssi - agc - IWLAGN_RSSI_OFFSET; |
7dc77dba WYG |
256 | } |
257 | ||
258 | struct iwl_hcmd_ops iwlagn_hcmd = { | |
259 | .rxon_assoc = iwlagn_send_rxon_assoc, | |
260 | .commit_rxon = iwl_commit_rxon, | |
261 | .set_rxon_chain = iwl_set_rxon_chain, | |
262 | .set_tx_ant = iwlagn_send_tx_ant_config, | |
65b52bde | 263 | .send_bt_config = iwl_send_bt_config, |
7dc77dba WYG |
264 | }; |
265 | ||
266 | struct iwl_hcmd_utils_ops iwlagn_hcmd_utils = { | |
267 | .get_hcmd_size = iwlagn_get_hcmd_size, | |
268 | .build_addsta_hcmd = iwlagn_build_addsta_hcmd, | |
269 | .gain_computation = iwlagn_gain_computation, | |
270 | .chain_noise_reset = iwlagn_chain_noise_reset, | |
271 | .rts_tx_cmd_flag = iwlagn_rts_tx_cmd_flag, | |
272 | .calc_rssi = iwlagn_calc_rssi, | |
b6e4c55a | 273 | .request_scan = iwlagn_request_scan, |
7dc77dba | 274 | }; |