drivers/net/wireless/iwlwifi/iwl-5000.c

   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 /* Oldest version we won't warn about */
  54 #define IWL5000_UCODE_API_OK 5
  55 #define IWL5150_UCODE_API_OK 2
  56
  57 /* Lowest firmware API version supported */
  58 #define IWL5000_UCODE_API_MIN 1
  59 #define IWL5150_UCODE_API_MIN 1
  60
  61 #define IWL5000_FW_PRE "iwlwifi-5000-"
  62 #define IWL5000_MODULE_FIRMWARE(api) IWL5000_FW_PRE __stringify(api) ".ucode"
  63
  64 #define IWL5150_FW_PRE "iwlwifi-5150-"
  65 #define IWL5150_MODULE_FIRMWARE(api) IWL5150_FW_PRE __stringify(api) ".ucode"
  66
  67 /* NIC configuration for 5000 series */
  68 static void iwl5000_nic_config(struct iwl_priv *priv)
  69 {
  70         unsigned long flags;
  71
  72         iwl_rf_config(priv);
  73
  74         spin_lock_irqsave(&priv->shrd->lock, flags);
  75
  76         /* W/A : NIC is stuck in a reset state after Early PCIe power off
  77          * (PCIe power is lost before PERST# is asserted),
  78          * causing ME FW to lose ownership and not being able to obtain it back.
  79          */
  80         iwl_set_bits_mask_prph(bus(priv), APMG_PS_CTRL_REG,
  81                                 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
  82                                 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
  83
  84
  85         spin_unlock_irqrestore(&priv->shrd->lock, flags);
  86 }
  87
  88 static struct iwl_sensitivity_ranges iwl5000_sensitivity = {
  89         .min_nrg_cck = 100,
  90         .max_nrg_cck = 0, /* not used, set to 0 */
  91         .auto_corr_min_ofdm = 90,
  92         .auto_corr_min_ofdm_mrc = 170,
  93         .auto_corr_min_ofdm_x1 = 105,
  94         .auto_corr_min_ofdm_mrc_x1 = 220,
  95
  96         .auto_corr_max_ofdm = 120,
  97         .auto_corr_max_ofdm_mrc = 210,
  98         .auto_corr_max_ofdm_x1 = 120,
  99         .auto_corr_max_ofdm_mrc_x1 = 240,
 100
 101         .auto_corr_min_cck = 125,
 102         .auto_corr_max_cck = 200,
 103         .auto_corr_min_cck_mrc = 200,
 104         .auto_corr_max_cck_mrc = 400,
 105         .nrg_th_cck = 100,
 106         .nrg_th_ofdm = 100,
 107
 108         .barker_corr_th_min = 190,
 109         .barker_corr_th_min_mrc = 390,
 110         .nrg_th_cca = 62,
 111 };
 112
 113 static struct iwl_sensitivity_ranges iwl5150_sensitivity = {
 114         .min_nrg_cck = 95,
 115         .max_nrg_cck = 0, /* not used, set to 0 */
 116         .auto_corr_min_ofdm = 90,
 117         .auto_corr_min_ofdm_mrc = 170,
 118         .auto_corr_min_ofdm_x1 = 105,
 119         .auto_corr_min_ofdm_mrc_x1 = 220,
 120
 121         .auto_corr_max_ofdm = 120,
 122         .auto_corr_max_ofdm_mrc = 210,
 123         /* max = min for performance bug in 5150 DSP */
 124         .auto_corr_max_ofdm_x1 = 105,
 125         .auto_corr_max_ofdm_mrc_x1 = 220,
 126
 127         .auto_corr_min_cck = 125,
 128         .auto_corr_max_cck = 200,
 129         .auto_corr_min_cck_mrc = 170,
 130         .auto_corr_max_cck_mrc = 400,
 131         .nrg_th_cck = 95,
 132         .nrg_th_ofdm = 95,
 133
 134         .barker_corr_th_min = 190,
 135         .barker_corr_th_min_mrc = 390,
 136         .nrg_th_cca = 62,
 137 };
 138
 139 #define IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF   (-5)
 140
 141 static s32 iwl_temp_calib_to_offset(struct iwl_shared *shrd)
 142 {
 143         u16 temperature, voltage;
 144         __le16 *temp_calib = (__le16 *)iwl_eeprom_query_addr(shrd,
 145                                 EEPROM_KELVIN_TEMPERATURE);
 146
 147         temperature = le16_to_cpu(temp_calib[0]);
 148         voltage = le16_to_cpu(temp_calib[1]);
 149
 150         /* offset = temp - volt / coeff */
 151         return (s32)(temperature - voltage / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF);
 152 }
 153
 154 static void iwl5150_set_ct_threshold(struct iwl_priv *priv)
 155 {
 156         const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF;
 157         s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) -
 158                         iwl_temp_calib_to_offset(priv->shrd);
 159
 160         hw_params(priv).ct_kill_threshold = threshold * volt2temp_coef;
 161 }
 162
 163 static void iwl5000_set_ct_threshold(struct iwl_priv *priv)
 164 {
 165         /* want Celsius */
 166         hw_params(priv).ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
 167 }
 168
 169 static int iwl5000_hw_set_hw_params(struct iwl_priv *priv)
 170 {
 171         if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
 172             iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
 173                 cfg(priv)->base_params->num_of_queues =
 174                         iwlagn_mod_params.num_of_queues;
 175
 176         hw_params(priv).max_txq_num = cfg(priv)->base_params->num_of_queues;
 177         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 178
 179         hw_params(priv).max_data_size = IWLAGN_RTC_DATA_SIZE;
 180         hw_params(priv).max_inst_size = IWLAGN_RTC_INST_SIZE;
 181
 182         hw_params(priv).ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 183                                         BIT(IEEE80211_BAND_5GHZ);
 184
 185         hw_params(priv).tx_chains_num = num_of_ant(cfg(priv)->valid_tx_ant);
 186         hw_params(priv).rx_chains_num = num_of_ant(cfg(priv)->valid_rx_ant);
 187         hw_params(priv).valid_tx_ant = cfg(priv)->valid_tx_ant;
 188         hw_params(priv).valid_rx_ant = cfg(priv)->valid_rx_ant;
 189
 190         iwl5000_set_ct_threshold(priv);
 191
 192         /* Set initial sensitivity parameters */
 193         hw_params(priv).sens = &iwl5000_sensitivity;
 194
 195         return 0;
 196 }
 197
 198 static int iwl5150_hw_set_hw_params(struct iwl_priv *priv)
 199 {
 200         if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
 201             iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
 202                 cfg(priv)->base_params->num_of_queues =
 203                         iwlagn_mod_params.num_of_queues;
 204
 205         hw_params(priv).max_txq_num = cfg(priv)->base_params->num_of_queues;
 206         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 207
 208         hw_params(priv).max_data_size = IWLAGN_RTC_DATA_SIZE;
 209         hw_params(priv).max_inst_size = IWLAGN_RTC_INST_SIZE;
 210
 211         hw_params(priv).ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 212                                         BIT(IEEE80211_BAND_5GHZ);
 213
 214         hw_params(priv).tx_chains_num = num_of_ant(cfg(priv)->valid_tx_ant);
 215         hw_params(priv).rx_chains_num = num_of_ant(cfg(priv)->valid_rx_ant);
 216         hw_params(priv).valid_tx_ant = cfg(priv)->valid_tx_ant;
 217         hw_params(priv).valid_rx_ant = cfg(priv)->valid_rx_ant;
 218
 219         iwl5150_set_ct_threshold(priv);
 220
 221         /* Set initial sensitivity parameters */
 222         hw_params(priv).sens = &iwl5150_sensitivity;
 223
 224         return 0;
 225 }
 226
 227 static void iwl5150_temperature(struct iwl_priv *priv)
 228 {
 229         u32 vt = 0;
 230         s32 offset =  iwl_temp_calib_to_offset(priv->shrd);
 231
 232         vt = le32_to_cpu(priv->statistics.common.temperature);
 233         vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
 234         /* now vt hold the temperature in Kelvin */
 235         priv->temperature = KELVIN_TO_CELSIUS(vt);
 236         iwl_tt_handler(priv);
 237 }
 238
 239 static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
 240                                      struct ieee80211_channel_switch *ch_switch)
 241 {
 242         /*
 243          * MULTI-FIXME
 244          * See iwlagn_mac_channel_switch.
 245          */
 246         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 247         struct iwl5000_channel_switch_cmd cmd;
 248         const struct iwl_channel_info *ch_info;
 249         u32 switch_time_in_usec, ucode_switch_time;
 250         u16 ch;
 251         u32 tsf_low;
 252         u8 switch_count;
 253         u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
 254         struct ieee80211_vif *vif = ctx->vif;
 255         struct iwl_host_cmd hcmd = {
 256                 .id = REPLY_CHANNEL_SWITCH,
 257                 .len = { sizeof(cmd), },
 258                 .flags = CMD_SYNC,
 259                 .data = { &cmd, },
 260         };
 261
 262         cmd.band = priv->band == IEEE80211_BAND_2GHZ;
 263         ch = ch_switch->channel->hw_value;
 264         IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
 265                       ctx->active.channel, ch);
 266         cmd.channel = cpu_to_le16(ch);
 267         cmd.rxon_flags = ctx->staging.flags;
 268         cmd.rxon_filter_flags = ctx->staging.filter_flags;
 269         switch_count = ch_switch->count;
 270         tsf_low = ch_switch->timestamp & 0x0ffffffff;
 271         /*
 272          * calculate the ucode channel switch time
 273          * adding TSF as one of the factor for when to switch
 274          */
 275         if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
 276                 if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
 277                     beacon_interval)) {
 278                         switch_count -= (priv->ucode_beacon_time -
 279                                 tsf_low) / beacon_interval;
 280                 } else
 281                         switch_count = 0;
 282         }
 283         if (switch_count <= 1)
 284                 cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
 285         else {
 286                 switch_time_in_usec =
 287                         vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
 288                 ucode_switch_time = iwl_usecs_to_beacons(priv,
 289                                                          switch_time_in_usec,
 290                                                          beacon_interval);
 291                 cmd.switch_time = iwl_add_beacon_time(priv,
 292                                                       priv->ucode_beacon_time,
 293                                                       ucode_switch_time,
 294                                                       beacon_interval);
 295         }
 296         IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
 297                       cmd.switch_time);
 298         ch_info = iwl_get_channel_info(priv, priv->band, ch);
 299         if (ch_info)
 300                 cmd.expect_beacon = is_channel_radar(ch_info);
 301         else {
 302                 IWL_ERR(priv, "invalid channel switch from %u to %u\n",
 303                         ctx->active.channel, ch);
 304                 return -EFAULT;
 305         }
 306
 307         return iwl_trans_send_cmd(trans(priv), &hcmd);
 308 }
 309
 310 static struct iwl_lib_ops iwl5000_lib = {
 311         .set_hw_params = iwl5000_hw_set_hw_params,
 312         .set_channel_switch = iwl5000_hw_channel_switch,
 313         .nic_config = iwl5000_nic_config,
 314         .eeprom_ops = {
 315                 .regulatory_bands = {
 316                         EEPROM_REG_BAND_1_CHANNELS,
 317                         EEPROM_REG_BAND_2_CHANNELS,
 318                         EEPROM_REG_BAND_3_CHANNELS,
 319                         EEPROM_REG_BAND_4_CHANNELS,
 320                         EEPROM_REG_BAND_5_CHANNELS,
 321                         EEPROM_REG_BAND_24_HT40_CHANNELS,
 322                         EEPROM_REG_BAND_52_HT40_CHANNELS
 323                 },
 324         },
 325         .temperature = iwlagn_temperature,
 326 };
 327
 328 static struct iwl_lib_ops iwl5150_lib = {
 329         .set_hw_params = iwl5150_hw_set_hw_params,
 330         .set_channel_switch = iwl5000_hw_channel_switch,
 331         .nic_config = iwl5000_nic_config,
 332         .eeprom_ops = {
 333                 .regulatory_bands = {
 334                         EEPROM_REG_BAND_1_CHANNELS,
 335                         EEPROM_REG_BAND_2_CHANNELS,
 336                         EEPROM_REG_BAND_3_CHANNELS,
 337                         EEPROM_REG_BAND_4_CHANNELS,
 338                         EEPROM_REG_BAND_5_CHANNELS,
 339                         EEPROM_REG_BAND_24_HT40_CHANNELS,
 340                         EEPROM_REG_BAND_52_HT40_CHANNELS
 341                 },
 342         },
 343         .temperature = iwl5150_temperature,
 344 };
 345
 346 static struct iwl_base_params iwl5000_base_params = {
 347         .eeprom_size = IWLAGN_EEPROM_IMG_SIZE,
 348         .num_of_queues = IWLAGN_NUM_QUEUES,
 349         .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
 350         .pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
 351         .led_compensation = 51,
 352         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
 353         .chain_noise_scale = 1000,
 354         .wd_timeout = IWL_LONG_WD_TIMEOUT,
 355         .max_event_log_size = 512,
 356         .no_idle_support = true,
 357         .wd_disable = true,
 358 };
 359 static struct iwl_ht_params iwl5000_ht_params = {
 360         .ht_greenfield_support = true,
 361 };
 362
 363 #define IWL_DEVICE_5000                                         \
 364         .fw_name_pre = IWL5000_FW_PRE,                          \
 365         .ucode_api_max = IWL5000_UCODE_API_MAX,                 \
 366         .ucode_api_ok = IWL5000_UCODE_API_OK,                   \
 367         .ucode_api_min = IWL5000_UCODE_API_MIN,                 \
 368         .eeprom_ver = EEPROM_5000_EEPROM_VERSION,               \
 369         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,       \
 370         .lib = &iwl5000_lib,                                    \
 371         .base_params = &iwl5000_base_params,                    \
 372         .led_mode = IWL_LED_BLINK
 373
 374 struct iwl_cfg iwl5300_agn_cfg = {
 375         .name = "Intel(R) Ultimate N WiFi Link 5300 AGN",
 376         IWL_DEVICE_5000,
 377         /* at least EEPROM 0x11A has wrong info */
 378         .valid_tx_ant = ANT_ABC,        /* .cfg overwrite */
 379         .valid_rx_ant = ANT_ABC,        /* .cfg overwrite */
 380         .ht_params = &iwl5000_ht_params,
 381 };
 382
 383 struct iwl_cfg iwl5100_bgn_cfg = {
 384         .name = "Intel(R) WiFi Link 5100 BGN",
 385         IWL_DEVICE_5000,
 386         .valid_tx_ant = ANT_B,          /* .cfg overwrite */
 387         .valid_rx_ant = ANT_AB,         /* .cfg overwrite */
 388         .ht_params = &iwl5000_ht_params,
 389 };
 390
 391 struct iwl_cfg iwl5100_abg_cfg = {
 392         .name = "Intel(R) WiFi Link 5100 ABG",
 393         IWL_DEVICE_5000,
 394         .valid_tx_ant = ANT_B,          /* .cfg overwrite */
 395         .valid_rx_ant = ANT_AB,         /* .cfg overwrite */
 396 };
 397
 398 struct iwl_cfg iwl5100_agn_cfg = {
 399         .name = "Intel(R) WiFi Link 5100 AGN",
 400         IWL_DEVICE_5000,
 401         .valid_tx_ant = ANT_B,          /* .cfg overwrite */
 402         .valid_rx_ant = ANT_AB,         /* .cfg overwrite */
 403         .ht_params = &iwl5000_ht_params,
 404 };
 405
 406 struct iwl_cfg iwl5350_agn_cfg = {
 407         .name = "Intel(R) WiMAX/WiFi Link 5350 AGN",
 408         .fw_name_pre = IWL5000_FW_PRE,
 409         .ucode_api_max = IWL5000_UCODE_API_MAX,
 410         .ucode_api_ok = IWL5000_UCODE_API_OK,
 411         .ucode_api_min = IWL5000_UCODE_API_MIN,
 412         .eeprom_ver = EEPROM_5050_EEPROM_VERSION,
 413         .eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,
 414         .lib = &iwl5000_lib,
 415         .base_params = &iwl5000_base_params,
 416         .ht_params = &iwl5000_ht_params,
 417         .led_mode = IWL_LED_BLINK,
 418         .internal_wimax_coex = true,
 419 };
 420
 421 #define IWL_DEVICE_5150                                         \
 422         .fw_name_pre = IWL5150_FW_PRE,                          \
 423         .ucode_api_max = IWL5150_UCODE_API_MAX,                 \
 424         .ucode_api_ok = IWL5150_UCODE_API_OK,                   \
 425         .ucode_api_min = IWL5150_UCODE_API_MIN,                 \
 426         .eeprom_ver = EEPROM_5050_EEPROM_VERSION,               \
 427         .eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,       \
 428         .lib = &iwl5150_lib,                                    \
 429         .base_params = &iwl5000_base_params,                    \
 430         .no_xtal_calib = true,                                  \
 431         .led_mode = IWL_LED_BLINK,                              \
 432         .internal_wimax_coex = true
 433
 434 struct iwl_cfg iwl5150_agn_cfg = {
 435         .name = "Intel(R) WiMAX/WiFi Link 5150 AGN",
 436         IWL_DEVICE_5150,
 437         .ht_params = &iwl5000_ht_params,
 438
 439 };
 440
 441 struct iwl_cfg iwl5150_abg_cfg = {
 442         .name = "Intel(R) WiMAX/WiFi Link 5150 ABG",
 443         IWL_DEVICE_5150,
 444 };
 445
 446 MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_OK));
 447 MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_OK));