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

   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
  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 */
  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
 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
 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
 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
 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
 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
 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
 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));