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