1 /******************************************************************************
2 *
3 * Copyright(c) 2007 - 2011 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
49 /* Highest firmware API version supported */
50 #define IWL5000_UCODE_API_MAX 5
51 #define IWL5150_UCODE_API_MAX 2
52
53 /* Lowest firmware API version supported */
54 #define IWL5000_UCODE_API_MIN 1
55 #define IWL5150_UCODE_API_MIN 1
56
57 #define IWL5000_FW_PRE "iwlwifi-5000-"
58 #define IWL5000_MODULE_FIRMWARE(api) IWL5000_FW_PRE __stringify(api) ".ucode"
59
60 #define IWL5150_FW_PRE "iwlwifi-5150-"
61 #define IWL5150_MODULE_FIRMWARE(api) IWL5150_FW_PRE __stringify(api) ".ucode"
62
63 /* NIC configuration for 5000 series */
iwl5000_nic_config(struct iwl_priv * priv)64 static void iwl5000_nic_config(struct iwl_priv *priv)
65 {
66 unsigned long flags;
67
68 iwl_rf_config(priv);
69
70 spin_lock_irqsave(&priv->shrd->lock, flags);
71
72 /* W/A : NIC is stuck in a reset state after Early PCIe power off
73 * (PCIe power is lost before PERST# is asserted),
74 * causing ME FW to lose ownership and not being able to obtain it back.
75 */
76 iwl_set_bits_mask_prph(bus(priv), APMG_PS_CTRL_REG,
77 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
78 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
79
80
81 spin_unlock_irqrestore(&priv->shrd->lock, flags);
82 }
83
84 static struct iwl_sensitivity_ranges iwl5000_sensitivity = {
85 .min_nrg_cck = 100,
86 .max_nrg_cck = 0, /* not used, set to 0 */
87 .auto_corr_min_ofdm = 90,
88 .auto_corr_min_ofdm_mrc = 170,
89 .auto_corr_min_ofdm_x1 = 105,
90 .auto_corr_min_ofdm_mrc_x1 = 220,
91
92 .auto_corr_max_ofdm = 120,
93 .auto_corr_max_ofdm_mrc = 210,
94 .auto_corr_max_ofdm_x1 = 120,
95 .auto_corr_max_ofdm_mrc_x1 = 240,
96
97 .auto_corr_min_cck = 125,
98 .auto_corr_max_cck = 200,
99 .auto_corr_min_cck_mrc = 200,
100 .auto_corr_max_cck_mrc = 400,
101 .nrg_th_cck = 100,
102 .nrg_th_ofdm = 100,
103
104 .barker_corr_th_min = 190,
105 .barker_corr_th_min_mrc = 390,
106 .nrg_th_cca = 62,
107 };
108
109 static struct iwl_sensitivity_ranges iwl5150_sensitivity = {
110 .min_nrg_cck = 95,
111 .max_nrg_cck = 0, /* not used, set to 0 */
112 .auto_corr_min_ofdm = 90,
113 .auto_corr_min_ofdm_mrc = 170,
114 .auto_corr_min_ofdm_x1 = 105,
115 .auto_corr_min_ofdm_mrc_x1 = 220,
116
117 .auto_corr_max_ofdm = 120,
118 .auto_corr_max_ofdm_mrc = 210,
119 /* max = min for performance bug in 5150 DSP */
120 .auto_corr_max_ofdm_x1 = 105,
121 .auto_corr_max_ofdm_mrc_x1 = 220,
122
123 .auto_corr_min_cck = 125,
124 .auto_corr_max_cck = 200,
125 .auto_corr_min_cck_mrc = 170,
126 .auto_corr_max_cck_mrc = 400,
127 .nrg_th_cck = 95,
128 .nrg_th_ofdm = 95,
129
130 .barker_corr_th_min = 190,
131 .barker_corr_th_min_mrc = 390,
132 .nrg_th_cca = 62,
133 };
134
135 #define IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF (-5)
136
iwl_temp_calib_to_offset(struct iwl_shared * shrd)137 static s32 iwl_temp_calib_to_offset(struct iwl_shared *shrd)
138 {
139 u16 temperature, voltage;
140 __le16 *temp_calib = (__le16 *)iwl_eeprom_query_addr(shrd,
141 EEPROM_KELVIN_TEMPERATURE);
142
143 temperature = le16_to_cpu(temp_calib[0]);
144 voltage = le16_to_cpu(temp_calib[1]);
145
146 /* offset = temp - volt / coeff */
147 return (s32)(temperature - voltage / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF);
148 }
149
iwl5150_set_ct_threshold(struct iwl_priv * priv)150 static void iwl5150_set_ct_threshold(struct iwl_priv *priv)
151 {
152 const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF;
153 s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) -
154 iwl_temp_calib_to_offset(priv->shrd);
155
156 hw_params(priv).ct_kill_threshold = threshold * volt2temp_coef;
157 }
158
iwl5000_set_ct_threshold(struct iwl_priv * priv)159 static void iwl5000_set_ct_threshold(struct iwl_priv *priv)
160 {
161 /* want Celsius */
162 hw_params(priv).ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
163 }
164
iwl5000_hw_set_hw_params(struct iwl_priv * priv)165 static int iwl5000_hw_set_hw_params(struct iwl_priv *priv)
166 {
167 if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
168 iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
169 cfg(priv)->base_params->num_of_queues =
170 iwlagn_mod_params.num_of_queues;
171
172 hw_params(priv).max_txq_num = cfg(priv)->base_params->num_of_queues;
173 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
174
175 hw_params(priv).max_data_size = IWLAGN_RTC_DATA_SIZE;
176 hw_params(priv).max_inst_size = IWLAGN_RTC_INST_SIZE;
177
178 hw_params(priv).ht40_channel = BIT(IEEE80211_BAND_2GHZ) |
179 BIT(IEEE80211_BAND_5GHZ);
180
181 hw_params(priv).tx_chains_num = num_of_ant(cfg(priv)->valid_tx_ant);
182 hw_params(priv).rx_chains_num = num_of_ant(cfg(priv)->valid_rx_ant);
183 hw_params(priv).valid_tx_ant = cfg(priv)->valid_tx_ant;
184 hw_params(priv).valid_rx_ant = cfg(priv)->valid_rx_ant;
185
186 iwl5000_set_ct_threshold(priv);
187
188 /* Set initial sensitivity parameters */
189 hw_params(priv).sens = &iwl5000_sensitivity;
190
191 return 0;
192 }
193
iwl5150_hw_set_hw_params(struct iwl_priv * priv)194 static int iwl5150_hw_set_hw_params(struct iwl_priv *priv)
195 {
196 if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
197 iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
198 cfg(priv)->base_params->num_of_queues =
199 iwlagn_mod_params.num_of_queues;
200
201 hw_params(priv).max_txq_num = cfg(priv)->base_params->num_of_queues;
202 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
203
204 hw_params(priv).max_data_size = IWLAGN_RTC_DATA_SIZE;
205 hw_params(priv).max_inst_size = IWLAGN_RTC_INST_SIZE;
206
207 hw_params(priv).ht40_channel = BIT(IEEE80211_BAND_2GHZ) |
208 BIT(IEEE80211_BAND_5GHZ);
209
210 hw_params(priv).tx_chains_num = num_of_ant(cfg(priv)->valid_tx_ant);
211 hw_params(priv).rx_chains_num = num_of_ant(cfg(priv)->valid_rx_ant);
212 hw_params(priv).valid_tx_ant = cfg(priv)->valid_tx_ant;
213 hw_params(priv).valid_rx_ant = cfg(priv)->valid_rx_ant;
214
215 iwl5150_set_ct_threshold(priv);
216
217 /* Set initial sensitivity parameters */
218 hw_params(priv).sens = &iwl5150_sensitivity;
219
220 return 0;
221 }
222
iwl5150_temperature(struct iwl_priv * priv)223 static void iwl5150_temperature(struct iwl_priv *priv)
224 {
225 u32 vt = 0;
226 s32 offset = iwl_temp_calib_to_offset(priv->shrd);
227
228 vt = le32_to_cpu(priv->statistics.common.temperature);
229 vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
230 /* now vt hold the temperature in Kelvin */
231 priv->temperature = KELVIN_TO_CELSIUS(vt);
232 iwl_tt_handler(priv);
233 }
234
iwl5000_hw_channel_switch(struct iwl_priv * priv,struct ieee80211_channel_switch * ch_switch)235 static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
236 struct ieee80211_channel_switch *ch_switch)
237 {
238 /*
239 * MULTI-FIXME
240 * See iwlagn_mac_channel_switch.
241 */
242 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
243 struct iwl5000_channel_switch_cmd cmd;
244 const struct iwl_channel_info *ch_info;
245 u32 switch_time_in_usec, ucode_switch_time;
246 u16 ch;
247 u32 tsf_low;
248 u8 switch_count;
249 u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
250 struct ieee80211_vif *vif = ctx->vif;
251 struct iwl_host_cmd hcmd = {
252 .id = REPLY_CHANNEL_SWITCH,
253 .len = { sizeof(cmd), },
254 .flags = CMD_SYNC,
255 .data = { &cmd, },
256 };
257
258 cmd.band = priv->band == IEEE80211_BAND_2GHZ;
259 ch = ch_switch->channel->hw_value;
260 IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
261 ctx->active.channel, ch);
262 cmd.channel = cpu_to_le16(ch);
263 cmd.rxon_flags = ctx->staging.flags;
264 cmd.rxon_filter_flags = ctx->staging.filter_flags;
265 switch_count = ch_switch->count;
266 tsf_low = ch_switch->timestamp & 0x0ffffffff;
267 /*
268 * calculate the ucode channel switch time
269 * adding TSF as one of the factor for when to switch
270 */
271 if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
272 if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
273 beacon_interval)) {
274 switch_count -= (priv->ucode_beacon_time -
275 tsf_low) / beacon_interval;
276 } else
277 switch_count = 0;
278 }
279 if (switch_count <= 1)
280 cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
281 else {
282 switch_time_in_usec =
283 vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
284 ucode_switch_time = iwl_usecs_to_beacons(priv,
285 switch_time_in_usec,
286 beacon_interval);
287 cmd.switch_time = iwl_add_beacon_time(priv,
288 priv->ucode_beacon_time,
289 ucode_switch_time,
290 beacon_interval);
291 }
292 IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
293 cmd.switch_time);
294 ch_info = iwl_get_channel_info(priv, priv->band, ch);
295 if (ch_info)
296 cmd.expect_beacon = is_channel_radar(ch_info);
297 else {
298 IWL_ERR(priv, "invalid channel switch from %u to %u\n",
299 ctx->active.channel, ch);
300 return -EFAULT;
301 }
302
303 return iwl_trans_send_cmd(trans(priv), &hcmd);
304 }
305
306 static struct iwl_lib_ops iwl5000_lib = {
307 .set_hw_params = iwl5000_hw_set_hw_params,
308 .set_channel_switch = iwl5000_hw_channel_switch,
309 .nic_config = iwl5000_nic_config,
310 .eeprom_ops = {
311 .regulatory_bands = {
312 EEPROM_REG_BAND_1_CHANNELS,
313 EEPROM_REG_BAND_2_CHANNELS,
314 EEPROM_REG_BAND_3_CHANNELS,
315 EEPROM_REG_BAND_4_CHANNELS,
316 EEPROM_REG_BAND_5_CHANNELS,
317 EEPROM_REG_BAND_24_HT40_CHANNELS,
318 EEPROM_REG_BAND_52_HT40_CHANNELS
319 },
320 },
321 .temperature = iwlagn_temperature,
322 };
323
324 static struct iwl_lib_ops iwl5150_lib = {
325 .set_hw_params = iwl5150_hw_set_hw_params,
326 .set_channel_switch = iwl5000_hw_channel_switch,
327 .nic_config = iwl5000_nic_config,
328 .eeprom_ops = {
329 .regulatory_bands = {
330 EEPROM_REG_BAND_1_CHANNELS,
331 EEPROM_REG_BAND_2_CHANNELS,
332 EEPROM_REG_BAND_3_CHANNELS,
333 EEPROM_REG_BAND_4_CHANNELS,
334 EEPROM_REG_BAND_5_CHANNELS,
335 EEPROM_REG_BAND_24_HT40_CHANNELS,
336 EEPROM_REG_BAND_52_HT40_CHANNELS
337 },
338 },
339 .temperature = iwl5150_temperature,
340 };
341
342 static struct iwl_base_params iwl5000_base_params = {
343 .eeprom_size = IWLAGN_EEPROM_IMG_SIZE,
344 .num_of_queues = IWLAGN_NUM_QUEUES,
345 .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
346 .pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
347 .led_compensation = 51,
348 .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
349 .chain_noise_scale = 1000,
350 .wd_timeout = IWL_LONG_WD_TIMEOUT,
351 .max_event_log_size = 512,
352 .no_idle_support = true,
353 .wd_disable = true,
354 };
355 static struct iwl_ht_params iwl5000_ht_params = {
356 .ht_greenfield_support = true,
357 };
358
359 #define IWL_DEVICE_5000 \
360 .fw_name_pre = IWL5000_FW_PRE, \
361 .ucode_api_max = IWL5000_UCODE_API_MAX, \
362 .ucode_api_min = IWL5000_UCODE_API_MIN, \
363 .eeprom_ver = EEPROM_5000_EEPROM_VERSION, \
364 .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION, \
365 .lib = &iwl5000_lib, \
366 .base_params = &iwl5000_base_params, \
367 .led_mode = IWL_LED_BLINK
368
369 struct iwl_cfg iwl5300_agn_cfg = {
370 .name = "Intel(R) Ultimate N WiFi Link 5300 AGN",
371 IWL_DEVICE_5000,
372 /* at least EEPROM 0x11A has wrong info */
373 .valid_tx_ant = ANT_ABC, /* .cfg overwrite */
374 .valid_rx_ant = ANT_ABC, /* .cfg overwrite */
375 .ht_params = &iwl5000_ht_params,
376 };
377
378 struct iwl_cfg iwl5100_bgn_cfg = {
379 .name = "Intel(R) WiFi Link 5100 BGN",
380 IWL_DEVICE_5000,
381 .valid_tx_ant = ANT_B, /* .cfg overwrite */
382 .valid_rx_ant = ANT_AB, /* .cfg overwrite */
383 .ht_params = &iwl5000_ht_params,
384 };
385
386 struct iwl_cfg iwl5100_abg_cfg = {
387 .name = "Intel(R) WiFi Link 5100 ABG",
388 IWL_DEVICE_5000,
389 .valid_tx_ant = ANT_B, /* .cfg overwrite */
390 .valid_rx_ant = ANT_AB, /* .cfg overwrite */
391 };
392
393 struct iwl_cfg iwl5100_agn_cfg = {
394 .name = "Intel(R) WiFi Link 5100 AGN",
395 IWL_DEVICE_5000,
396 .valid_tx_ant = ANT_B, /* .cfg overwrite */
397 .valid_rx_ant = ANT_AB, /* .cfg overwrite */
398 .ht_params = &iwl5000_ht_params,
399 };
400
401 struct iwl_cfg iwl5350_agn_cfg = {
402 .name = "Intel(R) WiMAX/WiFi Link 5350 AGN",
403 .fw_name_pre = IWL5000_FW_PRE,
404 .ucode_api_max = IWL5000_UCODE_API_MAX,
405 .ucode_api_min = IWL5000_UCODE_API_MIN,
406 .eeprom_ver = EEPROM_5050_EEPROM_VERSION,
407 .eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,
408 .lib = &iwl5000_lib,
409 .base_params = &iwl5000_base_params,
410 .ht_params = &iwl5000_ht_params,
411 .led_mode = IWL_LED_BLINK,
412 .internal_wimax_coex = true,
413 };
414
415 #define IWL_DEVICE_5150 \
416 .fw_name_pre = IWL5150_FW_PRE, \
417 .ucode_api_max = IWL5150_UCODE_API_MAX, \
418 .ucode_api_min = IWL5150_UCODE_API_MIN, \
419 .eeprom_ver = EEPROM_5050_EEPROM_VERSION, \
420 .eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION, \
421 .lib = &iwl5150_lib, \
422 .base_params = &iwl5000_base_params, \
423 .no_xtal_calib = true, \
424 .led_mode = IWL_LED_BLINK, \
425 .internal_wimax_coex = true
426
427 struct iwl_cfg iwl5150_agn_cfg = {
428 .name = "Intel(R) WiMAX/WiFi Link 5150 AGN",
429 IWL_DEVICE_5150,
430 .ht_params = &iwl5000_ht_params,
431
432 };
433
434 struct iwl_cfg iwl5150_abg_cfg = {
435 .name = "Intel(R) WiMAX/WiFi Link 5150 ABG",
436 IWL_DEVICE_5150,
437 };
438
439 MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_MAX));
440 MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_MAX));
441