1 /******************************************************************************
2 *
3 * Copyright(c) 2007 - 2012 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 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 *****************************************************************************/
26
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/delay.h>
31 #include <linux/sched.h>
32 #include <linux/skbuff.h>
33 #include <linux/netdevice.h>
34 #include <net/mac80211.h>
35 #include <linux/etherdevice.h>
36 #include <asm/unaligned.h>
37 #include <linux/stringify.h>
38
39 #include "iwl-eeprom.h"
40 #include "iwl-dev.h"
41 #include "iwl-core.h"
42 #include "iwl-io.h"
43 #include "iwl-agn.h"
44 #include "iwl-agn-hw.h"
45 #include "iwl-trans.h"
46 #include "iwl-shared.h"
47 #include "iwl-cfg.h"
48 #include "iwl-prph.h"
49
50 /* Highest firmware API version supported */
51 #define IWL5000_UCODE_API_MAX 5
52 #define IWL5150_UCODE_API_MAX 2
53
54 /* Oldest version we won't warn about */
55 #define IWL5000_UCODE_API_OK 5
56 #define IWL5150_UCODE_API_OK 2
57
58 /* Lowest firmware API version supported */
59 #define IWL5000_UCODE_API_MIN 1
60 #define IWL5150_UCODE_API_MIN 1
61
62 #define IWL5000_FW_PRE "iwlwifi-5000-"
63 #define IWL5000_MODULE_FIRMWARE(api) IWL5000_FW_PRE __stringify(api) ".ucode"
64
65 #define IWL5150_FW_PRE "iwlwifi-5150-"
66 #define IWL5150_MODULE_FIRMWARE(api) IWL5150_FW_PRE __stringify(api) ".ucode"
67
68 /* NIC configuration for 5000 series */
iwl5000_nic_config(struct iwl_priv * priv)69 static void iwl5000_nic_config(struct iwl_priv *priv)
70 {
71 iwl_rf_config(priv);
72
73 /* W/A : NIC is stuck in a reset state after Early PCIe power off
74 * (PCIe power is lost before PERST# is asserted),
75 * causing ME FW to lose ownership and not being able to obtain it back.
76 */
77 iwl_set_bits_mask_prph(trans(priv), APMG_PS_CTRL_REG,
78 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
79 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
80 }
81
82 static const struct iwl_sensitivity_ranges iwl5000_sensitivity = {
83 .min_nrg_cck = 100,
84 .auto_corr_min_ofdm = 90,
85 .auto_corr_min_ofdm_mrc = 170,
86 .auto_corr_min_ofdm_x1 = 105,
87 .auto_corr_min_ofdm_mrc_x1 = 220,
88
89 .auto_corr_max_ofdm = 120,
90 .auto_corr_max_ofdm_mrc = 210,
91 .auto_corr_max_ofdm_x1 = 120,
92 .auto_corr_max_ofdm_mrc_x1 = 240,
93
94 .auto_corr_min_cck = 125,
95 .auto_corr_max_cck = 200,
96 .auto_corr_min_cck_mrc = 200,
97 .auto_corr_max_cck_mrc = 400,
98 .nrg_th_cck = 100,
99 .nrg_th_ofdm = 100,
100
101 .barker_corr_th_min = 190,
102 .barker_corr_th_min_mrc = 390,
103 .nrg_th_cca = 62,
104 };
105
106 static struct iwl_sensitivity_ranges iwl5150_sensitivity = {
107 .min_nrg_cck = 95,
108 .auto_corr_min_ofdm = 90,
109 .auto_corr_min_ofdm_mrc = 170,
110 .auto_corr_min_ofdm_x1 = 105,
111 .auto_corr_min_ofdm_mrc_x1 = 220,
112
113 .auto_corr_max_ofdm = 120,
114 .auto_corr_max_ofdm_mrc = 210,
115 /* max = min for performance bug in 5150 DSP */
116 .auto_corr_max_ofdm_x1 = 105,
117 .auto_corr_max_ofdm_mrc_x1 = 220,
118
119 .auto_corr_min_cck = 125,
120 .auto_corr_max_cck = 200,
121 .auto_corr_min_cck_mrc = 170,
122 .auto_corr_max_cck_mrc = 400,
123 .nrg_th_cck = 95,
124 .nrg_th_ofdm = 95,
125
126 .barker_corr_th_min = 190,
127 .barker_corr_th_min_mrc = 390,
128 .nrg_th_cca = 62,
129 };
130
131 #define IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF (-5)
132
iwl_temp_calib_to_offset(struct iwl_shared * shrd)133 static s32 iwl_temp_calib_to_offset(struct iwl_shared *shrd)
134 {
135 u16 temperature, voltage;
136 __le16 *temp_calib = (__le16 *)iwl_eeprom_query_addr(shrd,
137 EEPROM_KELVIN_TEMPERATURE);
138
139 temperature = le16_to_cpu(temp_calib[0]);
140 voltage = le16_to_cpu(temp_calib[1]);
141
142 /* offset = temp - volt / coeff */
143 return (s32)(temperature - voltage / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF);
144 }
145
iwl5150_set_ct_threshold(struct iwl_priv * priv)146 static void iwl5150_set_ct_threshold(struct iwl_priv *priv)
147 {
148 const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF;
149 s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) -
150 iwl_temp_calib_to_offset(priv->shrd);
151
152 hw_params(priv).ct_kill_threshold = threshold * volt2temp_coef;
153 }
154
iwl5000_set_ct_threshold(struct iwl_priv * priv)155 static void iwl5000_set_ct_threshold(struct iwl_priv *priv)
156 {
157 /* want Celsius */
158 hw_params(priv).ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
159 }
160
iwl5000_hw_set_hw_params(struct iwl_priv * priv)161 static void iwl5000_hw_set_hw_params(struct iwl_priv *priv)
162 {
163 hw_params(priv).ht40_channel = BIT(IEEE80211_BAND_2GHZ) |
164 BIT(IEEE80211_BAND_5GHZ);
165
166 hw_params(priv).tx_chains_num =
167 num_of_ant(hw_params(priv).valid_tx_ant);
168 hw_params(priv).rx_chains_num =
169 num_of_ant(hw_params(priv).valid_rx_ant);
170
171 iwl5000_set_ct_threshold(priv);
172
173 /* Set initial sensitivity parameters */
174 hw_params(priv).sens = &iwl5000_sensitivity;
175 }
176
iwl5150_hw_set_hw_params(struct iwl_priv * priv)177 static void iwl5150_hw_set_hw_params(struct iwl_priv *priv)
178 {
179 hw_params(priv).ht40_channel = BIT(IEEE80211_BAND_2GHZ) |
180 BIT(IEEE80211_BAND_5GHZ);
181
182 hw_params(priv).tx_chains_num =
183 num_of_ant(hw_params(priv).valid_tx_ant);
184 hw_params(priv).rx_chains_num =
185 num_of_ant(hw_params(priv).valid_rx_ant);
186
187 iwl5150_set_ct_threshold(priv);
188
189 /* Set initial sensitivity parameters */
190 hw_params(priv).sens = &iwl5150_sensitivity;
191 }
192
iwl5150_temperature(struct iwl_priv * priv)193 static void iwl5150_temperature(struct iwl_priv *priv)
194 {
195 u32 vt = 0;
196 s32 offset = iwl_temp_calib_to_offset(priv->shrd);
197
198 vt = le32_to_cpu(priv->statistics.common.temperature);
199 vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
200 /* now vt hold the temperature in Kelvin */
201 priv->temperature = KELVIN_TO_CELSIUS(vt);
202 iwl_tt_handler(priv);
203 }
204
iwl5000_hw_channel_switch(struct iwl_priv * priv,struct ieee80211_channel_switch * ch_switch)205 static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
206 struct ieee80211_channel_switch *ch_switch)
207 {
208 /*
209 * MULTI-FIXME
210 * See iwlagn_mac_channel_switch.
211 */
212 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
213 struct iwl5000_channel_switch_cmd cmd;
214 const struct iwl_channel_info *ch_info;
215 u32 switch_time_in_usec, ucode_switch_time;
216 u16 ch;
217 u32 tsf_low;
218 u8 switch_count;
219 u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
220 struct ieee80211_vif *vif = ctx->vif;
221 struct iwl_host_cmd hcmd = {
222 .id = REPLY_CHANNEL_SWITCH,
223 .len = { sizeof(cmd), },
224 .flags = CMD_SYNC,
225 .data = { &cmd, },
226 };
227
228 cmd.band = priv->band == IEEE80211_BAND_2GHZ;
229 ch = ch_switch->channel->hw_value;
230 IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
231 ctx->active.channel, ch);
232 cmd.channel = cpu_to_le16(ch);
233 cmd.rxon_flags = ctx->staging.flags;
234 cmd.rxon_filter_flags = ctx->staging.filter_flags;
235 switch_count = ch_switch->count;
236 tsf_low = ch_switch->timestamp & 0x0ffffffff;
237 /*
238 * calculate the ucode channel switch time
239 * adding TSF as one of the factor for when to switch
240 */
241 if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
242 if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
243 beacon_interval)) {
244 switch_count -= (priv->ucode_beacon_time -
245 tsf_low) / beacon_interval;
246 } else
247 switch_count = 0;
248 }
249 if (switch_count <= 1)
250 cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
251 else {
252 switch_time_in_usec =
253 vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
254 ucode_switch_time = iwl_usecs_to_beacons(priv,
255 switch_time_in_usec,
256 beacon_interval);
257 cmd.switch_time = iwl_add_beacon_time(priv,
258 priv->ucode_beacon_time,
259 ucode_switch_time,
260 beacon_interval);
261 }
262 IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
263 cmd.switch_time);
264 ch_info = iwl_get_channel_info(priv, priv->band, ch);
265 if (ch_info)
266 cmd.expect_beacon = is_channel_radar(ch_info);
267 else {
268 IWL_ERR(priv, "invalid channel switch from %u to %u\n",
269 ctx->active.channel, ch);
270 return -EFAULT;
271 }
272
273 return iwl_dvm_send_cmd(priv, &hcmd);
274 }
275
276 static struct iwl_lib_ops iwl5000_lib = {
277 .set_hw_params = iwl5000_hw_set_hw_params,
278 .set_channel_switch = iwl5000_hw_channel_switch,
279 .nic_config = iwl5000_nic_config,
280 .eeprom_ops = {
281 .regulatory_bands = {
282 EEPROM_REG_BAND_1_CHANNELS,
283 EEPROM_REG_BAND_2_CHANNELS,
284 EEPROM_REG_BAND_3_CHANNELS,
285 EEPROM_REG_BAND_4_CHANNELS,
286 EEPROM_REG_BAND_5_CHANNELS,
287 EEPROM_REG_BAND_24_HT40_CHANNELS,
288 EEPROM_REG_BAND_52_HT40_CHANNELS
289 },
290 },
291 .temperature = iwlagn_temperature,
292 };
293
294 static struct iwl_lib_ops iwl5150_lib = {
295 .set_hw_params = iwl5150_hw_set_hw_params,
296 .set_channel_switch = iwl5000_hw_channel_switch,
297 .nic_config = iwl5000_nic_config,
298 .eeprom_ops = {
299 .regulatory_bands = {
300 EEPROM_REG_BAND_1_CHANNELS,
301 EEPROM_REG_BAND_2_CHANNELS,
302 EEPROM_REG_BAND_3_CHANNELS,
303 EEPROM_REG_BAND_4_CHANNELS,
304 EEPROM_REG_BAND_5_CHANNELS,
305 EEPROM_REG_BAND_24_HT40_CHANNELS,
306 EEPROM_REG_BAND_52_HT40_CHANNELS
307 },
308 },
309 .temperature = iwl5150_temperature,
310 };
311
312 static const struct iwl_base_params iwl5000_base_params = {
313 .eeprom_size = IWLAGN_EEPROM_IMG_SIZE,
314 .num_of_queues = IWLAGN_NUM_QUEUES,
315 .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
316 .pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
317 .led_compensation = 51,
318 .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
319 .chain_noise_scale = 1000,
320 .wd_timeout = IWL_LONG_WD_TIMEOUT,
321 .max_event_log_size = 512,
322 .no_idle_support = true,
323 .wd_disable = true,
324 };
325
326 static const struct iwl_ht_params iwl5000_ht_params = {
327 .ht_greenfield_support = true,
328 };
329
330 #define IWL_DEVICE_5000 \
331 .fw_name_pre = IWL5000_FW_PRE, \
332 .ucode_api_max = IWL5000_UCODE_API_MAX, \
333 .ucode_api_ok = IWL5000_UCODE_API_OK, \
334 .ucode_api_min = IWL5000_UCODE_API_MIN, \
335 .max_inst_size = IWLAGN_RTC_INST_SIZE, \
336 .max_data_size = IWLAGN_RTC_DATA_SIZE, \
337 .eeprom_ver = EEPROM_5000_EEPROM_VERSION, \
338 .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION, \
339 .lib = &iwl5000_lib, \
340 .base_params = &iwl5000_base_params, \
341 .led_mode = IWL_LED_BLINK
342
343 const struct iwl_cfg iwl5300_agn_cfg = {
344 .name = "Intel(R) Ultimate N WiFi Link 5300 AGN",
345 IWL_DEVICE_5000,
346 /* at least EEPROM 0x11A has wrong info */
347 .valid_tx_ant = ANT_ABC, /* .cfg overwrite */
348 .valid_rx_ant = ANT_ABC, /* .cfg overwrite */
349 .ht_params = &iwl5000_ht_params,
350 };
351
352 const struct iwl_cfg iwl5100_bgn_cfg = {
353 .name = "Intel(R) WiFi Link 5100 BGN",
354 IWL_DEVICE_5000,
355 .valid_tx_ant = ANT_B, /* .cfg overwrite */
356 .valid_rx_ant = ANT_AB, /* .cfg overwrite */
357 .ht_params = &iwl5000_ht_params,
358 };
359
360 const struct iwl_cfg iwl5100_abg_cfg = {
361 .name = "Intel(R) WiFi Link 5100 ABG",
362 IWL_DEVICE_5000,
363 .valid_tx_ant = ANT_B, /* .cfg overwrite */
364 .valid_rx_ant = ANT_AB, /* .cfg overwrite */
365 };
366
367 const struct iwl_cfg iwl5100_agn_cfg = {
368 .name = "Intel(R) WiFi Link 5100 AGN",
369 IWL_DEVICE_5000,
370 .valid_tx_ant = ANT_B, /* .cfg overwrite */
371 .valid_rx_ant = ANT_AB, /* .cfg overwrite */
372 .ht_params = &iwl5000_ht_params,
373 };
374
375 const struct iwl_cfg iwl5350_agn_cfg = {
376 .name = "Intel(R) WiMAX/WiFi Link 5350 AGN",
377 .fw_name_pre = IWL5000_FW_PRE,
378 .ucode_api_max = IWL5000_UCODE_API_MAX,
379 .ucode_api_ok = IWL5000_UCODE_API_OK,
380 .ucode_api_min = IWL5000_UCODE_API_MIN,
381 .max_inst_size = IWLAGN_RTC_INST_SIZE,
382 .max_data_size = IWLAGN_RTC_DATA_SIZE,
383 .eeprom_ver = EEPROM_5050_EEPROM_VERSION,
384 .eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,
385 .lib = &iwl5000_lib,
386 .base_params = &iwl5000_base_params,
387 .ht_params = &iwl5000_ht_params,
388 .led_mode = IWL_LED_BLINK,
389 .internal_wimax_coex = true,
390 };
391
392 #define IWL_DEVICE_5150 \
393 .fw_name_pre = IWL5150_FW_PRE, \
394 .ucode_api_max = IWL5150_UCODE_API_MAX, \
395 .ucode_api_ok = IWL5150_UCODE_API_OK, \
396 .ucode_api_min = IWL5150_UCODE_API_MIN, \
397 .max_inst_size = IWLAGN_RTC_INST_SIZE, \
398 .max_data_size = IWLAGN_RTC_DATA_SIZE, \
399 .eeprom_ver = EEPROM_5050_EEPROM_VERSION, \
400 .eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION, \
401 .lib = &iwl5150_lib, \
402 .base_params = &iwl5000_base_params, \
403 .no_xtal_calib = true, \
404 .led_mode = IWL_LED_BLINK, \
405 .internal_wimax_coex = true
406
407 const struct iwl_cfg iwl5150_agn_cfg = {
408 .name = "Intel(R) WiMAX/WiFi Link 5150 AGN",
409 IWL_DEVICE_5150,
410 .ht_params = &iwl5000_ht_params,
411
412 };
413
414 const struct iwl_cfg iwl5150_abg_cfg = {
415 .name = "Intel(R) WiMAX/WiFi Link 5150 ABG",
416 IWL_DEVICE_5150,
417 };
418
419 MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_OK));
420 MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_OK));
421